| File: | src/gnu/usr.bin/binutils/bfd/elflink.c |
| Warning: | line 6444, column 9 Access to field 'output_section' results in a dereference of a null pointer (loaded from variable 'isec') |
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| 1 | /* ELF linking support for BFD. | ||||
| 2 | Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 | ||||
| 3 | Free Software Foundation, Inc. | ||||
| 4 | |||||
| 5 | This file is part of BFD, the Binary File Descriptor library. | ||||
| 6 | |||||
| 7 | This program is free software; you can redistribute it and/or modify | ||||
| 8 | it under the terms of the GNU General Public License as published by | ||||
| 9 | the Free Software Foundation; either version 2 of the License, or | ||||
| 10 | (at your option) any later version. | ||||
| 11 | |||||
| 12 | This program is distributed in the hope that it will be useful, | ||||
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||||
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||||
| 15 | GNU General Public License for more details. | ||||
| 16 | |||||
| 17 | You should have received a copy of the GNU General Public License | ||||
| 18 | along with this program; if not, write to the Free Software | ||||
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | ||||
| 20 | |||||
| 21 | #include "bfd.h" | ||||
| 22 | #include "sysdep.h" | ||||
| 23 | #include "bfdlink.h" | ||||
| 24 | #include "libbfd.h" | ||||
| 25 | #define ARCH_SIZE0 0 | ||||
| 26 | #include "elf-bfd.h" | ||||
| 27 | #include "safe-ctype.h" | ||||
| 28 | #include "libiberty.h" | ||||
| 29 | |||||
| 30 | bfd_boolean | ||||
| 31 | _bfd_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) | ||||
| 32 | { | ||||
| 33 | flagword flags; | ||||
| 34 | asection *s; | ||||
| 35 | struct elf_link_hash_entry *h; | ||||
| 36 | struct bfd_link_hash_entry *bh; | ||||
| 37 | const struct elf_backend_data *bed = get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data ); | ||||
| 38 | int ptralign; | ||||
| 39 | |||||
| 40 | /* This function may be called more than once. */ | ||||
| 41 | s = bfd_get_section_by_name (abfd, ".got"); | ||||
| 42 | if (s != NULL((void*)0) && (s->flags & SEC_LINKER_CREATED0x800000) != 0) | ||||
| 43 | return TRUE1; | ||||
| 44 | |||||
| 45 | switch (bed->s->arch_size) | ||||
| 46 | { | ||||
| 47 | case 32: | ||||
| 48 | ptralign = 2; | ||||
| 49 | break; | ||||
| 50 | |||||
| 51 | case 64: | ||||
| 52 | ptralign = 3; | ||||
| 53 | break; | ||||
| 54 | |||||
| 55 | default: | ||||
| 56 | bfd_set_error (bfd_error_bad_value); | ||||
| 57 | return FALSE0; | ||||
| 58 | } | ||||
| 59 | |||||
| 60 | flags = (SEC_ALLOC0x001 | SEC_LOAD0x002 | SEC_HAS_CONTENTS0x200 | SEC_IN_MEMORY0x20000 | ||||
| 61 | | SEC_LINKER_CREATED0x800000); | ||||
| 62 | |||||
| 63 | s = bfd_make_section (abfd, ".got"); | ||||
| 64 | if (s == NULL((void*)0) | ||||
| 65 | || !bfd_set_section_flags (abfd, s, flags) | ||||
| 66 | || !bfd_set_section_alignment (abfd, s, ptralign)(((s)->alignment_power = (ptralign)),1)) | ||||
| 67 | return FALSE0; | ||||
| 68 | |||||
| 69 | if (bed->want_got_plt) | ||||
| 70 | { | ||||
| 71 | s = bfd_make_section (abfd, ".got.plt"); | ||||
| 72 | if (s == NULL((void*)0) | ||||
| 73 | || !bfd_set_section_flags (abfd, s, flags) | ||||
| 74 | || !bfd_set_section_alignment (abfd, s, ptralign)(((s)->alignment_power = (ptralign)),1)) | ||||
| 75 | return FALSE0; | ||||
| 76 | } | ||||
| 77 | |||||
| 78 | if (bed->want_got_sym) | ||||
| 79 | { | ||||
| 80 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | ||||
| 81 | (or .got.plt) section. We don't do this in the linker script | ||||
| 82 | because we don't want to define the symbol if we are not creating | ||||
| 83 | a global offset table. */ | ||||
| 84 | bh = NULL((void*)0); | ||||
| 85 | if (!(_bfd_generic_link_add_one_symbol | ||||
| 86 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL0x02, s, | ||||
| 87 | bed->got_symbol_offset, NULL((void*)0), FALSE0, bed->collect, &bh))) | ||||
| 88 | return FALSE0; | ||||
| 89 | h = (struct elf_link_hash_entry *) bh; | ||||
| 90 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR02; | ||||
| 91 | h->type = STT_OBJECT1; | ||||
| 92 | if (ELF_ST_VISIBILITY (h->other)((h->other) & 0x3) != STV_INTERNAL1) | ||||
| 93 | h->other = (h->other & ~ELF_ST_VISIBILITY (-1)((-1) & 0x3)) | STV_HIDDEN2; | ||||
| 94 | (*bed->elf_backend_hide_symbol) (info, h, TRUE1); | ||||
| 95 | |||||
| 96 | if (! info->executable | ||||
| 97 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | ||||
| 98 | return FALSE0; | ||||
| 99 | |||||
| 100 | elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->hgot = h; | ||||
| 101 | } | ||||
| 102 | |||||
| 103 | /* The first bit of the global offset table is the header. */ | ||||
| 104 | s->_raw_size += bed->got_header_size + bed->got_symbol_offset; | ||||
| 105 | |||||
| 106 | return TRUE1; | ||||
| 107 | } | ||||
| 108 | |||||
| 109 | /* Create some sections which will be filled in with dynamic linking | ||||
| 110 | information. ABFD is an input file which requires dynamic sections | ||||
| 111 | to be created. The dynamic sections take up virtual memory space | ||||
| 112 | when the final executable is run, so we need to create them before | ||||
| 113 | addresses are assigned to the output sections. We work out the | ||||
| 114 | actual contents and size of these sections later. */ | ||||
| 115 | |||||
| 116 | bfd_boolean | ||||
| 117 | _bfd_elf_link_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | ||||
| 118 | { | ||||
| 119 | flagword flags; | ||||
| 120 | register asection *s; | ||||
| 121 | struct elf_link_hash_entry *h; | ||||
| 122 | struct bfd_link_hash_entry *bh; | ||||
| 123 | const struct elf_backend_data *bed; | ||||
| 124 | |||||
| 125 | if (! is_elf_hash_table (info->hash)(((struct bfd_link_hash_table *) (info->hash))->type == bfd_link_elf_hash_table)) | ||||
| 126 | return FALSE0; | ||||
| 127 | |||||
| 128 | if (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynamic_sections_created) | ||||
| 129 | return TRUE1; | ||||
| 130 | |||||
| 131 | /* Make sure that all dynamic sections use the same input BFD. */ | ||||
| 132 | if (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynobj == NULL((void*)0)) | ||||
| 133 | elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynobj = abfd; | ||||
| 134 | else | ||||
| 135 | abfd = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynobj; | ||||
| 136 | |||||
| 137 | /* Note that we set the SEC_IN_MEMORY flag for all of these | ||||
| 138 | sections. */ | ||||
| 139 | flags = (SEC_ALLOC0x001 | SEC_LOAD0x002 | SEC_HAS_CONTENTS0x200 | ||||
| 140 | | SEC_IN_MEMORY0x20000 | SEC_LINKER_CREATED0x800000); | ||||
| 141 | |||||
| 142 | /* A dynamically linked executable has a .interp section, but a | ||||
| 143 | shared library does not. */ | ||||
| 144 | if (info->executable && !info->static_link) | ||||
| 145 | { | ||||
| 146 | s = bfd_make_section (abfd, ".interp"); | ||||
| 147 | if (s == NULL((void*)0) | ||||
| 148 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY0x010)) | ||||
| 149 | return FALSE0; | ||||
| 150 | } | ||||
| 151 | |||||
| 152 | if (! info->traditional_format) | ||||
| 153 | { | ||||
| 154 | s = bfd_make_section (abfd, ".eh_frame_hdr"); | ||||
| 155 | if (s == NULL((void*)0) | ||||
| 156 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY0x010) | ||||
| 157 | || ! bfd_set_section_alignment (abfd, s, 2)(((s)->alignment_power = (2)),1)) | ||||
| 158 | return FALSE0; | ||||
| 159 | elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->eh_info.hdr_sec = s; | ||||
| 160 | } | ||||
| 161 | |||||
| 162 | bed = get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data ); | ||||
| 163 | |||||
| 164 | /* Create sections to hold version informations. These are removed | ||||
| 165 | if they are not needed. */ | ||||
| 166 | s = bfd_make_section (abfd, ".gnu.version_d"); | ||||
| 167 | if (s == NULL((void*)0) | ||||
| 168 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY0x010) | ||||
| 169 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)(((s)->alignment_power = (bed->s->log_file_align)),1 )) | ||||
| 170 | return FALSE0; | ||||
| 171 | |||||
| 172 | s = bfd_make_section (abfd, ".gnu.version"); | ||||
| 173 | if (s == NULL((void*)0) | ||||
| 174 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY0x010) | ||||
| 175 | || ! bfd_set_section_alignment (abfd, s, 1)(((s)->alignment_power = (1)),1)) | ||||
| 176 | return FALSE0; | ||||
| 177 | |||||
| 178 | s = bfd_make_section (abfd, ".gnu.version_r"); | ||||
| 179 | if (s == NULL((void*)0) | ||||
| 180 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY0x010) | ||||
| 181 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)(((s)->alignment_power = (bed->s->log_file_align)),1 )) | ||||
| 182 | return FALSE0; | ||||
| 183 | |||||
| 184 | s = bfd_make_section (abfd, ".dynsym"); | ||||
| 185 | if (s == NULL((void*)0) | ||||
| 186 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY0x010) | ||||
| 187 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)(((s)->alignment_power = (bed->s->log_file_align)),1 )) | ||||
| 188 | return FALSE0; | ||||
| 189 | |||||
| 190 | s = bfd_make_section (abfd, ".dynstr"); | ||||
| 191 | if (s == NULL((void*)0) | ||||
| 192 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY0x010)) | ||||
| 193 | return FALSE0; | ||||
| 194 | |||||
| 195 | /* Create a strtab to hold the dynamic symbol names. */ | ||||
| 196 | if (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynstr == NULL((void*)0)) | ||||
| 197 | { | ||||
| 198 | elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynstr = _bfd_elf_strtab_init (); | ||||
| 199 | if (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynstr == NULL((void*)0)) | ||||
| 200 | return FALSE0; | ||||
| 201 | } | ||||
| 202 | |||||
| 203 | s = bfd_make_section (abfd, ".dynamic"); | ||||
| 204 | if (s == NULL((void*)0) | ||||
| 205 | || ! bfd_set_section_flags (abfd, s, flags) | ||||
| 206 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)(((s)->alignment_power = (bed->s->log_file_align)),1 )) | ||||
| 207 | return FALSE0; | ||||
| 208 | |||||
| 209 | /* The special symbol _DYNAMIC is always set to the start of the | ||||
| 210 | .dynamic section. This call occurs before we have processed the | ||||
| 211 | symbols for any dynamic object, so we don't have to worry about | ||||
| 212 | overriding a dynamic definition. We could set _DYNAMIC in a | ||||
| 213 | linker script, but we only want to define it if we are, in fact, | ||||
| 214 | creating a .dynamic section. We don't want to define it if there | ||||
| 215 | is no .dynamic section, since on some ELF platforms the start up | ||||
| 216 | code examines it to decide how to initialize the process. */ | ||||
| 217 | bh = NULL((void*)0); | ||||
| 218 | if (! (_bfd_generic_link_add_one_symbol | ||||
| 219 | (info, abfd, "_DYNAMIC", BSF_GLOBAL0x02, s, 0, NULL((void*)0), FALSE0, | ||||
| 220 | get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data )->collect, &bh))) | ||||
| 221 | return FALSE0; | ||||
| 222 | h = (struct elf_link_hash_entry *) bh; | ||||
| 223 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR02; | ||||
| 224 | h->type = STT_OBJECT1; | ||||
| 225 | if (ELF_ST_VISIBILITY (h->other)((h->other) & 0x3) != STV_INTERNAL1) | ||||
| 226 | h->other = (h->other & ~ELF_ST_VISIBILITY (-1)((-1) & 0x3)) | STV_HIDDEN2; | ||||
| 227 | (*bed->elf_backend_hide_symbol) (info, h, TRUE1); | ||||
| 228 | |||||
| 229 | if (! info->executable | ||||
| 230 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | ||||
| 231 | return FALSE0; | ||||
| 232 | |||||
| 233 | s = bfd_make_section (abfd, ".hash"); | ||||
| 234 | if (s == NULL((void*)0) | ||||
| 235 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY0x010) | ||||
| 236 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)(((s)->alignment_power = (bed->s->log_file_align)),1 )) | ||||
| 237 | return FALSE0; | ||||
| 238 | elf_section_data (s)((struct bfd_elf_section_data*)s->used_by_bfd)->this_hdr.sh_entsize = bed->s->sizeof_hash_entry; | ||||
| 239 | |||||
| 240 | /* Let the backend create the rest of the sections. This lets the | ||||
| 241 | backend set the right flags. The backend will normally create | ||||
| 242 | the .got and .plt sections. */ | ||||
| 243 | if (! (*bed->elf_backend_create_dynamic_sections) (abfd, info)) | ||||
| 244 | return FALSE0; | ||||
| 245 | |||||
| 246 | elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynamic_sections_created = TRUE1; | ||||
| 247 | |||||
| 248 | return TRUE1; | ||||
| 249 | } | ||||
| 250 | |||||
| 251 | /* Create dynamic sections when linking against a dynamic object. */ | ||||
| 252 | |||||
| 253 | bfd_boolean | ||||
| 254 | _bfd_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | ||||
| 255 | { | ||||
| 256 | flagword flags, pltflags; | ||||
| 257 | asection *s; | ||||
| 258 | const struct elf_backend_data *bed = get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data ); | ||||
| 259 | |||||
| 260 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and | ||||
| 261 | .rel[a].bss sections. */ | ||||
| 262 | |||||
| 263 | flags = (SEC_ALLOC0x001 | SEC_LOAD0x002 | SEC_HAS_CONTENTS0x200 | SEC_IN_MEMORY0x20000 | ||||
| 264 | | SEC_LINKER_CREATED0x800000); | ||||
| 265 | |||||
| 266 | pltflags = flags; | ||||
| 267 | pltflags |= SEC_CODE0x020; | ||||
| 268 | if (bed->plt_not_loaded) | ||||
| 269 | pltflags &= ~ (SEC_CODE0x020 | SEC_LOAD0x002 | SEC_HAS_CONTENTS0x200); | ||||
| 270 | if (bed->plt_readonly) | ||||
| 271 | pltflags |= SEC_READONLY0x010; | ||||
| 272 | |||||
| 273 | s = bfd_make_section (abfd, ".plt"); | ||||
| 274 | if (s == NULL((void*)0) | ||||
| 275 | || ! bfd_set_section_flags (abfd, s, pltflags) | ||||
| 276 | || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)(((s)->alignment_power = (bed->plt_alignment)),1)) | ||||
| 277 | return FALSE0; | ||||
| 278 | |||||
| 279 | if (bed->want_plt_sym) | ||||
| 280 | { | ||||
| 281 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the | ||||
| 282 | .plt section. */ | ||||
| 283 | struct elf_link_hash_entry *h; | ||||
| 284 | struct bfd_link_hash_entry *bh = NULL((void*)0); | ||||
| 285 | |||||
| 286 | if (! (_bfd_generic_link_add_one_symbol | ||||
| 287 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL0x02, s, 0, NULL((void*)0), | ||||
| 288 | FALSE0, get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data )->collect, &bh))) | ||||
| 289 | return FALSE0; | ||||
| 290 | h = (struct elf_link_hash_entry *) bh; | ||||
| 291 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR02; | ||||
| 292 | h->type = STT_OBJECT1; | ||||
| 293 | if (ELF_ST_VISIBILITY (h->other)((h->other) & 0x3) != STV_INTERNAL1) | ||||
| 294 | h->other = (h->other & ~ELF_ST_VISIBILITY (-1)((-1) & 0x3)) | STV_HIDDEN2; | ||||
| 295 | (*bed->elf_backend_hide_symbol) (info, h, TRUE1); | ||||
| 296 | |||||
| 297 | if (! info->executable | ||||
| 298 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | ||||
| 299 | return FALSE0; | ||||
| 300 | } | ||||
| 301 | |||||
| 302 | s = bfd_make_section (abfd, | ||||
| 303 | bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"); | ||||
| 304 | if (s == NULL((void*)0) | ||||
| 305 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY0x010) | ||||
| 306 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)(((s)->alignment_power = (bed->s->log_file_align)),1 )) | ||||
| 307 | return FALSE0; | ||||
| 308 | |||||
| 309 | if (! _bfd_elf_create_got_section (abfd, info)) | ||||
| 310 | return FALSE0; | ||||
| 311 | |||||
| 312 | if (bed->want_dynbss) | ||||
| 313 | { | ||||
| 314 | /* The .dynbss section is a place to put symbols which are defined | ||||
| 315 | by dynamic objects, are referenced by regular objects, and are | ||||
| 316 | not functions. We must allocate space for them in the process | ||||
| 317 | image and use a R_*_COPY reloc to tell the dynamic linker to | ||||
| 318 | initialize them at run time. The linker script puts the .dynbss | ||||
| 319 | section into the .bss section of the final image. */ | ||||
| 320 | s = bfd_make_section (abfd, ".dynbss"); | ||||
| 321 | if (s == NULL((void*)0) | ||||
| 322 | || ! bfd_set_section_flags (abfd, s, SEC_ALLOC0x001 | SEC_LINKER_CREATED0x800000)) | ||||
| 323 | return FALSE0; | ||||
| 324 | |||||
| 325 | /* The .rel[a].bss section holds copy relocs. This section is not | ||||
| 326 | normally needed. We need to create it here, though, so that the | ||||
| 327 | linker will map it to an output section. We can't just create it | ||||
| 328 | only if we need it, because we will not know whether we need it | ||||
| 329 | until we have seen all the input files, and the first time the | ||||
| 330 | main linker code calls BFD after examining all the input files | ||||
| 331 | (size_dynamic_sections) the input sections have already been | ||||
| 332 | mapped to the output sections. If the section turns out not to | ||||
| 333 | be needed, we can discard it later. We will never need this | ||||
| 334 | section when generating a shared object, since they do not use | ||||
| 335 | copy relocs. */ | ||||
| 336 | if (! info->shared) | ||||
| 337 | { | ||||
| 338 | s = bfd_make_section (abfd, | ||||
| 339 | (bed->default_use_rela_p | ||||
| 340 | ? ".rela.bss" : ".rel.bss")); | ||||
| 341 | if (s == NULL((void*)0) | ||||
| 342 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY0x010) | ||||
| 343 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)(((s)->alignment_power = (bed->s->log_file_align)),1 )) | ||||
| 344 | return FALSE0; | ||||
| 345 | } | ||||
| 346 | } | ||||
| 347 | |||||
| 348 | return TRUE1; | ||||
| 349 | } | ||||
| 350 | |||||
| 351 | /* Record a new dynamic symbol. We record the dynamic symbols as we | ||||
| 352 | read the input files, since we need to have a list of all of them | ||||
| 353 | before we can determine the final sizes of the output sections. | ||||
| 354 | Note that we may actually call this function even though we are not | ||||
| 355 | going to output any dynamic symbols; in some cases we know that a | ||||
| 356 | symbol should be in the dynamic symbol table, but only if there is | ||||
| 357 | one. */ | ||||
| 358 | |||||
| 359 | bfd_boolean | ||||
| 360 | bfd_elf_link_record_dynamic_symbol (struct bfd_link_info *info, | ||||
| 361 | struct elf_link_hash_entry *h) | ||||
| 362 | { | ||||
| 363 | if (h->dynindx == -1) | ||||
| 364 | { | ||||
| 365 | struct elf_strtab_hash *dynstr; | ||||
| 366 | char *p; | ||||
| 367 | const char *name; | ||||
| 368 | bfd_size_type indx; | ||||
| 369 | |||||
| 370 | /* XXX: The ABI draft says the linker must turn hidden and | ||||
| 371 | internal symbols into STB_LOCAL symbols when producing the | ||||
| 372 | DSO. However, if ld.so honors st_other in the dynamic table, | ||||
| 373 | this would not be necessary. */ | ||||
| 374 | switch (ELF_ST_VISIBILITY (h->other)((h->other) & 0x3)) | ||||
| 375 | { | ||||
| 376 | case STV_INTERNAL1: | ||||
| 377 | case STV_HIDDEN2: | ||||
| 378 | if (h->root.type != bfd_link_hash_undefined | ||||
| 379 | && h->root.type != bfd_link_hash_undefweak) | ||||
| 380 | { | ||||
| 381 | h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL02000; | ||||
| 382 | return TRUE1; | ||||
| 383 | } | ||||
| 384 | |||||
| 385 | default: | ||||
| 386 | break; | ||||
| 387 | } | ||||
| 388 | |||||
| 389 | h->dynindx = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynsymcount; | ||||
| 390 | ++elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynsymcount; | ||||
| 391 | |||||
| 392 | dynstr = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynstr; | ||||
| 393 | if (dynstr == NULL((void*)0)) | ||||
| 394 | { | ||||
| 395 | /* Create a strtab to hold the dynamic symbol names. */ | ||||
| 396 | elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynstr = dynstr = _bfd_elf_strtab_init (); | ||||
| 397 | if (dynstr == NULL((void*)0)) | ||||
| 398 | return FALSE0; | ||||
| 399 | } | ||||
| 400 | |||||
| 401 | /* We don't put any version information in the dynamic string | ||||
| 402 | table. */ | ||||
| 403 | name = h->root.root.string; | ||||
| 404 | p = strchr (name, ELF_VER_CHR'@'); | ||||
| 405 | if (p != NULL((void*)0)) | ||||
| 406 | /* We know that the p points into writable memory. In fact, | ||||
| 407 | there are only a few symbols that have read-only names, being | ||||
| 408 | those like _GLOBAL_OFFSET_TABLE_ that are created specially | ||||
| 409 | by the backends. Most symbols will have names pointing into | ||||
| 410 | an ELF string table read from a file, or to objalloc memory. */ | ||||
| 411 | *p = 0; | ||||
| 412 | |||||
| 413 | indx = _bfd_elf_strtab_add (dynstr, name, p != NULL((void*)0)); | ||||
| 414 | |||||
| 415 | if (p != NULL((void*)0)) | ||||
| 416 | *p = ELF_VER_CHR'@'; | ||||
| 417 | |||||
| 418 | if (indx == (bfd_size_type) -1) | ||||
| 419 | return FALSE0; | ||||
| 420 | h->dynstr_index = indx; | ||||
| 421 | } | ||||
| 422 | |||||
| 423 | return TRUE1; | ||||
| 424 | } | ||||
| 425 | |||||
| 426 | /* Record an assignment to a symbol made by a linker script. We need | ||||
| 427 | this in case some dynamic object refers to this symbol. */ | ||||
| 428 | |||||
| 429 | bfd_boolean | ||||
| 430 | bfd_elf_record_link_assignment (bfd *output_bfd ATTRIBUTE_UNUSED__attribute__ ((__unused__)), | ||||
| 431 | struct bfd_link_info *info, | ||||
| 432 | const char *name, | ||||
| 433 | bfd_boolean provide) | ||||
| 434 | { | ||||
| 435 | struct elf_link_hash_entry *h; | ||||
| 436 | |||||
| 437 | if (!is_elf_hash_table (info->hash)(((struct bfd_link_hash_table *) (info->hash))->type == bfd_link_elf_hash_table)) | ||||
| 438 | return TRUE1; | ||||
| 439 | |||||
| 440 | h = elf_link_hash_lookup (elf_hash_table (info), name, TRUE, TRUE, FALSE)((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( name), (1), (1), (0))); | ||||
| 441 | if (h == NULL((void*)0)) | ||||
| 442 | return FALSE0; | ||||
| 443 | |||||
| 444 | /* Since we're defining the symbol, don't let it seem to have not | ||||
| 445 | been defined. record_dynamic_symbol and size_dynamic_sections | ||||
| 446 | may depend on this. */ | ||||
| 447 | if (h->root.type == bfd_link_hash_undefweak | ||||
| 448 | || h->root.type == bfd_link_hash_undefined) | ||||
| 449 | h->root.type = bfd_link_hash_new; | ||||
| 450 | |||||
| 451 | if (h->root.type == bfd_link_hash_new) | ||||
| 452 | h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF0400; | ||||
| 453 | |||||
| 454 | /* If this symbol is being provided by the linker script, and it is | ||||
| 455 | currently defined by a dynamic object, but not by a regular | ||||
| 456 | object, then mark it as undefined so that the generic linker will | ||||
| 457 | force the correct value. */ | ||||
| 458 | if (provide | ||||
| 459 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC010) != 0 | ||||
| 460 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR02) == 0) | ||||
| 461 | h->root.type = bfd_link_hash_undefined; | ||||
| 462 | |||||
| 463 | /* If this symbol is not being provided by the linker script, and it is | ||||
| 464 | currently defined by a dynamic object, but not by a regular object, | ||||
| 465 | then clear out any version information because the symbol will not be | ||||
| 466 | associated with the dynamic object any more. */ | ||||
| 467 | if (!provide | ||||
| 468 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC010) != 0 | ||||
| 469 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR02) == 0) | ||||
| 470 | h->verinfo.verdef = NULL((void*)0); | ||||
| 471 | |||||
| 472 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR02; | ||||
| 473 | |||||
| 474 | if (((h->elf_link_hash_flags & (ELF_LINK_HASH_DEF_DYNAMIC010 | ||||
| 475 | | ELF_LINK_HASH_REF_DYNAMIC04)) != 0 | ||||
| 476 | || info->shared) | ||||
| 477 | && h->dynindx == -1) | ||||
| 478 | { | ||||
| 479 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | ||||
| 480 | return FALSE0; | ||||
| 481 | |||||
| 482 | /* If this is a weak defined symbol, and we know a corresponding | ||||
| 483 | real symbol from the same dynamic object, make sure the real | ||||
| 484 | symbol is also made into a dynamic symbol. */ | ||||
| 485 | if (h->weakdef != NULL((void*)0) | ||||
| 486 | && h->weakdef->dynindx == -1) | ||||
| 487 | { | ||||
| 488 | if (! bfd_elf_link_record_dynamic_symbol (info, h->weakdef)) | ||||
| 489 | return FALSE0; | ||||
| 490 | } | ||||
| 491 | } | ||||
| 492 | |||||
| 493 | return TRUE1; | ||||
| 494 | } | ||||
| 495 | |||||
| 496 | /* Record a new local dynamic symbol. Returns 0 on failure, 1 on | ||||
| 497 | success, and 2 on a failure caused by attempting to record a symbol | ||||
| 498 | in a discarded section, eg. a discarded link-once section symbol. */ | ||||
| 499 | |||||
| 500 | int | ||||
| 501 | bfd_elf_link_record_local_dynamic_symbol (struct bfd_link_info *info, | ||||
| 502 | bfd *input_bfd, | ||||
| 503 | long input_indx) | ||||
| 504 | { | ||||
| 505 | bfd_size_type amt; | ||||
| 506 | struct elf_link_local_dynamic_entry *entry; | ||||
| 507 | struct elf_link_hash_table *eht; | ||||
| 508 | struct elf_strtab_hash *dynstr; | ||||
| 509 | unsigned long dynstr_index; | ||||
| 510 | char *name; | ||||
| 511 | Elf_External_Sym_Shndx eshndx; | ||||
| 512 | char esym[sizeof (Elf64_External_Sym)]; | ||||
| 513 | |||||
| 514 | if (! is_elf_hash_table (info->hash)(((struct bfd_link_hash_table *) (info->hash))->type == bfd_link_elf_hash_table)) | ||||
| 515 | return 0; | ||||
| 516 | |||||
| 517 | /* See if the entry exists already. */ | ||||
| 518 | for (entry = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynlocal; entry ; entry = entry->next) | ||||
| 519 | if (entry->input_bfd == input_bfd && entry->input_indx == input_indx) | ||||
| 520 | return 1; | ||||
| 521 | |||||
| 522 | amt = sizeof (*entry); | ||||
| 523 | entry = bfd_alloc (input_bfd, amt); | ||||
| 524 | if (entry == NULL((void*)0)) | ||||
| 525 | return 0; | ||||
| 526 | |||||
| 527 | /* Go find the symbol, so that we can find it's name. */ | ||||
| 528 | if (!bfd_elf_get_elf_syms (input_bfd, &elf_tdata (input_bfd)((input_bfd) -> tdata.elf_obj_data)->symtab_hdr, | ||||
| 529 | 1, input_indx, &entry->isym, esym, &eshndx)) | ||||
| 530 | { | ||||
| 531 | bfd_release (input_bfd, entry); | ||||
| 532 | return 0; | ||||
| 533 | } | ||||
| 534 | |||||
| 535 | if (entry->isym.st_shndx != SHN_UNDEF0 | ||||
| 536 | && (entry->isym.st_shndx < SHN_LORESERVE0xFF00 | ||||
| 537 | || entry->isym.st_shndx > SHN_HIRESERVE0xFFFF)) | ||||
| 538 | { | ||||
| 539 | asection *s; | ||||
| 540 | |||||
| 541 | s = bfd_section_from_elf_index (input_bfd, entry->isym.st_shndx); | ||||
| 542 | if (s == NULL((void*)0) || bfd_is_abs_section (s->output_section)((s->output_section) == ((asection *) &bfd_abs_section ))) | ||||
| 543 | { | ||||
| 544 | /* We can still bfd_release here as nothing has done another | ||||
| 545 | bfd_alloc. We can't do this later in this function. */ | ||||
| 546 | bfd_release (input_bfd, entry); | ||||
| 547 | return 2; | ||||
| 548 | } | ||||
| 549 | } | ||||
| 550 | |||||
| 551 | name = (bfd_elf_string_from_elf_section | ||||
| 552 | (input_bfd, elf_tdata (input_bfd)((input_bfd) -> tdata.elf_obj_data)->symtab_hdr.sh_link, | ||||
| 553 | entry->isym.st_name)); | ||||
| 554 | |||||
| 555 | dynstr = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynstr; | ||||
| 556 | if (dynstr == NULL((void*)0)) | ||||
| 557 | { | ||||
| 558 | /* Create a strtab to hold the dynamic symbol names. */ | ||||
| 559 | elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynstr = dynstr = _bfd_elf_strtab_init (); | ||||
| 560 | if (dynstr == NULL((void*)0)) | ||||
| 561 | return 0; | ||||
| 562 | } | ||||
| 563 | |||||
| 564 | dynstr_index = _bfd_elf_strtab_add (dynstr, name, FALSE0); | ||||
| 565 | if (dynstr_index == (unsigned long) -1) | ||||
| 566 | return 0; | ||||
| 567 | entry->isym.st_name = dynstr_index; | ||||
| 568 | |||||
| 569 | eht = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash)); | ||||
| 570 | |||||
| 571 | entry->next = eht->dynlocal; | ||||
| 572 | eht->dynlocal = entry; | ||||
| 573 | entry->input_bfd = input_bfd; | ||||
| 574 | entry->input_indx = input_indx; | ||||
| 575 | eht->dynsymcount++; | ||||
| 576 | |||||
| 577 | /* Whatever binding the symbol had before, it's now local. */ | ||||
| 578 | entry->isym.st_info | ||||
| 579 | = ELF_ST_INFO (STB_LOCAL, ELF_ST_TYPE (entry->isym.st_info))(((0) << 4) + ((((entry->isym.st_info) & 0xF)) & 0xF)); | ||||
| 580 | |||||
| 581 | /* The dynindx will be set at the end of size_dynamic_sections. */ | ||||
| 582 | |||||
| 583 | return 1; | ||||
| 584 | } | ||||
| 585 | |||||
| 586 | /* Return the dynindex of a local dynamic symbol. */ | ||||
| 587 | |||||
| 588 | long | ||||
| 589 | _bfd_elf_link_lookup_local_dynindx (struct bfd_link_info *info, | ||||
| 590 | bfd *input_bfd, | ||||
| 591 | long input_indx) | ||||
| 592 | { | ||||
| 593 | struct elf_link_local_dynamic_entry *e; | ||||
| 594 | |||||
| 595 | for (e = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynlocal; e ; e = e->next) | ||||
| 596 | if (e->input_bfd == input_bfd && e->input_indx == input_indx) | ||||
| 597 | return e->dynindx; | ||||
| 598 | return -1; | ||||
| 599 | } | ||||
| 600 | |||||
| 601 | /* This function is used to renumber the dynamic symbols, if some of | ||||
| 602 | them are removed because they are marked as local. This is called | ||||
| 603 | via elf_link_hash_traverse. */ | ||||
| 604 | |||||
| 605 | static bfd_boolean | ||||
| 606 | elf_link_renumber_hash_table_dynsyms (struct elf_link_hash_entry *h, | ||||
| 607 | void *data) | ||||
| 608 | { | ||||
| 609 | size_t *count = data; | ||||
| 610 | |||||
| 611 | if (h->root.type == bfd_link_hash_warning) | ||||
| 612 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | ||||
| 613 | |||||
| 614 | if (h->dynindx != -1) | ||||
| 615 | h->dynindx = ++(*count); | ||||
| 616 | |||||
| 617 | return TRUE1; | ||||
| 618 | } | ||||
| 619 | |||||
| 620 | /* Assign dynsym indices. In a shared library we generate a section | ||||
| 621 | symbol for each output section, which come first. Next come all of | ||||
| 622 | the back-end allocated local dynamic syms, followed by the rest of | ||||
| 623 | the global symbols. */ | ||||
| 624 | |||||
| 625 | unsigned long | ||||
| 626 | _bfd_elf_link_renumber_dynsyms (bfd *output_bfd, struct bfd_link_info *info) | ||||
| 627 | { | ||||
| 628 | unsigned long dynsymcount = 0; | ||||
| 629 | |||||
| 630 | if (info->shared) | ||||
| 631 | { | ||||
| 632 | asection *p; | ||||
| 633 | for (p = output_bfd->sections; p ; p = p->next) | ||||
| 634 | if ((p->flags & SEC_EXCLUDE0x40000) == 0) | ||||
| 635 | elf_section_data (p)((struct bfd_elf_section_data*)p->used_by_bfd)->dynindx = ++dynsymcount; | ||||
| 636 | } | ||||
| 637 | |||||
| 638 | if (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynlocal) | ||||
| 639 | { | ||||
| 640 | struct elf_link_local_dynamic_entry *p; | ||||
| 641 | for (p = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynlocal; p ; p = p->next) | ||||
| 642 | p->dynindx = ++dynsymcount; | ||||
| 643 | } | ||||
| 644 | |||||
| 645 | elf_link_hash_traverse (elf_hash_table (info),(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (elf_link_renumber_hash_table_dynsyms), (&dynsymcount ))) | ||||
| 646 | elf_link_renumber_hash_table_dynsyms,(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (elf_link_renumber_hash_table_dynsyms), (&dynsymcount ))) | ||||
| 647 | &dynsymcount)(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (elf_link_renumber_hash_table_dynsyms), (&dynsymcount ))); | ||||
| 648 | |||||
| 649 | /* There is an unused NULL entry at the head of the table which | ||||
| 650 | we must account for in our count. Unless there weren't any | ||||
| 651 | symbols, which means we'll have no table at all. */ | ||||
| 652 | if (dynsymcount != 0) | ||||
| 653 | ++dynsymcount; | ||||
| 654 | |||||
| 655 | return elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynsymcount = dynsymcount; | ||||
| 656 | } | ||||
| 657 | |||||
| 658 | /* This function is called when we want to define a new symbol. It | ||||
| 659 | handles the various cases which arise when we find a definition in | ||||
| 660 | a dynamic object, or when there is already a definition in a | ||||
| 661 | dynamic object. The new symbol is described by NAME, SYM, PSEC, | ||||
| 662 | and PVALUE. We set SYM_HASH to the hash table entry. We set | ||||
| 663 | OVERRIDE if the old symbol is overriding a new definition. We set | ||||
| 664 | TYPE_CHANGE_OK if it is OK for the type to change. We set | ||||
| 665 | SIZE_CHANGE_OK if it is OK for the size to change. By OK to | ||||
| 666 | change, we mean that we shouldn't warn if the type or size does | ||||
| 667 | change. */ | ||||
| 668 | |||||
| 669 | bfd_boolean | ||||
| 670 | _bfd_elf_merge_symbol (bfd *abfd, | ||||
| 671 | struct bfd_link_info *info, | ||||
| 672 | const char *name, | ||||
| 673 | Elf_Internal_Sym *sym, | ||||
| 674 | asection **psec, | ||||
| 675 | bfd_vma *pvalue, | ||||
| 676 | struct elf_link_hash_entry **sym_hash, | ||||
| 677 | bfd_boolean *skip, | ||||
| 678 | bfd_boolean *override, | ||||
| 679 | bfd_boolean *type_change_ok, | ||||
| 680 | bfd_boolean *size_change_ok) | ||||
| 681 | { | ||||
| 682 | asection *sec; | ||||
| 683 | struct elf_link_hash_entry *h; | ||||
| 684 | struct elf_link_hash_entry *flip; | ||||
| 685 | int bind; | ||||
| 686 | bfd *oldbfd; | ||||
| 687 | bfd_boolean newdyn, olddyn, olddef, newdef, newdyncommon, olddyncommon; | ||||
| 688 | bfd_boolean newweak, oldweak; | ||||
| 689 | |||||
| 690 | *skip = FALSE0; | ||||
| 691 | *override = FALSE0; | ||||
| 692 | |||||
| 693 | sec = *psec; | ||||
| 694 | bind = ELF_ST_BIND (sym->st_info)(((unsigned int)(sym->st_info)) >> 4); | ||||
| 695 | |||||
| 696 | if (! bfd_is_und_section (sec)((sec) == ((asection *) &bfd_und_section))) | ||||
| 697 | h = elf_link_hash_lookup (elf_hash_table (info), name, TRUE, FALSE, FALSE)((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( name), (1), (0), (0))); | ||||
| 698 | else | ||||
| 699 | h = ((struct elf_link_hash_entry *) | ||||
| 700 | bfd_wrapped_link_hash_lookup (abfd, info, name, TRUE1, FALSE0, FALSE0)); | ||||
| 701 | if (h == NULL((void*)0)) | ||||
| 702 | return FALSE0; | ||||
| 703 | *sym_hash = h; | ||||
| 704 | |||||
| 705 | /* This code is for coping with dynamic objects, and is only useful | ||||
| 706 | if we are doing an ELF link. */ | ||||
| 707 | if (info->hash->creator != abfd->xvec) | ||||
| 708 | return TRUE1; | ||||
| 709 | |||||
| 710 | /* For merging, we only care about real symbols. */ | ||||
| 711 | |||||
| 712 | while (h->root.type == bfd_link_hash_indirect | ||||
| 713 | || h->root.type == bfd_link_hash_warning) | ||||
| 714 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | ||||
| 715 | |||||
| 716 | /* If we just created the symbol, mark it as being an ELF symbol. | ||||
| 717 | Other than that, there is nothing to do--there is no merge issue | ||||
| 718 | with a newly defined symbol--so we just return. */ | ||||
| 719 | |||||
| 720 | if (h->root.type == bfd_link_hash_new) | ||||
| 721 | { | ||||
| 722 | h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF0400; | ||||
| 723 | return TRUE1; | ||||
| 724 | } | ||||
| 725 | |||||
| 726 | /* OLDBFD is a BFD associated with the existing symbol. */ | ||||
| 727 | |||||
| 728 | switch (h->root.type) | ||||
| 729 | { | ||||
| 730 | default: | ||||
| 731 | oldbfd = NULL((void*)0); | ||||
| 732 | break; | ||||
| 733 | |||||
| 734 | case bfd_link_hash_undefined: | ||||
| 735 | case bfd_link_hash_undefweak: | ||||
| 736 | oldbfd = h->root.u.undef.abfd; | ||||
| 737 | break; | ||||
| 738 | |||||
| 739 | case bfd_link_hash_defined: | ||||
| 740 | case bfd_link_hash_defweak: | ||||
| 741 | oldbfd = h->root.u.def.section->owner; | ||||
| 742 | break; | ||||
| 743 | |||||
| 744 | case bfd_link_hash_common: | ||||
| 745 | oldbfd = h->root.u.c.p->section->owner; | ||||
| 746 | break; | ||||
| 747 | } | ||||
| 748 | |||||
| 749 | /* In cases involving weak versioned symbols, we may wind up trying | ||||
| 750 | to merge a symbol with itself. Catch that here, to avoid the | ||||
| 751 | confusion that results if we try to override a symbol with | ||||
| 752 | itself. The additional tests catch cases like | ||||
| 753 | _GLOBAL_OFFSET_TABLE_, which are regular symbols defined in a | ||||
| 754 | dynamic object, which we do want to handle here. */ | ||||
| 755 | if (abfd == oldbfd | ||||
| 756 | && ((abfd->flags & DYNAMIC0x40) == 0 | ||||
| 757 | || (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR02) == 0)) | ||||
| 758 | return TRUE1; | ||||
| 759 | |||||
| 760 | /* NEWDYN and OLDDYN indicate whether the new or old symbol, | ||||
| 761 | respectively, is from a dynamic object. */ | ||||
| 762 | |||||
| 763 | if ((abfd->flags & DYNAMIC0x40) != 0) | ||||
| 764 | newdyn = TRUE1; | ||||
| 765 | else | ||||
| 766 | newdyn = FALSE0; | ||||
| 767 | |||||
| 768 | if (oldbfd != NULL((void*)0)) | ||||
| 769 | olddyn = (oldbfd->flags & DYNAMIC0x40) != 0; | ||||
| 770 | else | ||||
| 771 | { | ||||
| 772 | asection *hsec; | ||||
| 773 | |||||
| 774 | /* This code handles the special SHN_MIPS_{TEXT,DATA} section | ||||
| 775 | indices used by MIPS ELF. */ | ||||
| 776 | switch (h->root.type) | ||||
| 777 | { | ||||
| 778 | default: | ||||
| 779 | hsec = NULL((void*)0); | ||||
| 780 | break; | ||||
| 781 | |||||
| 782 | case bfd_link_hash_defined: | ||||
| 783 | case bfd_link_hash_defweak: | ||||
| 784 | hsec = h->root.u.def.section; | ||||
| 785 | break; | ||||
| 786 | |||||
| 787 | case bfd_link_hash_common: | ||||
| 788 | hsec = h->root.u.c.p->section; | ||||
| 789 | break; | ||||
| 790 | } | ||||
| 791 | |||||
| 792 | if (hsec == NULL((void*)0)) | ||||
| 793 | olddyn = FALSE0; | ||||
| 794 | else | ||||
| 795 | olddyn = (hsec->symbol->flags & BSF_DYNAMIC0x8000) != 0; | ||||
| 796 | } | ||||
| 797 | |||||
| 798 | /* NEWDEF and OLDDEF indicate whether the new or old symbol, | ||||
| 799 | respectively, appear to be a definition rather than reference. */ | ||||
| 800 | |||||
| 801 | if (bfd_is_und_section (sec)((sec) == ((asection *) &bfd_und_section)) || bfd_is_com_section (sec)(((sec)->flags & 0x8000) != 0)) | ||||
| 802 | newdef = FALSE0; | ||||
| 803 | else | ||||
| 804 | newdef = TRUE1; | ||||
| 805 | |||||
| 806 | if (h->root.type == bfd_link_hash_undefined | ||||
| 807 | || h->root.type == bfd_link_hash_undefweak | ||||
| 808 | || h->root.type == bfd_link_hash_common) | ||||
| 809 | olddef = FALSE0; | ||||
| 810 | else | ||||
| 811 | olddef = TRUE1; | ||||
| 812 | |||||
| 813 | /* We need to remember if a symbol has a definition in a dynamic | ||||
| 814 | object or is weak in all dynamic objects. Internal and hidden | ||||
| 815 | visibility will make it unavailable to dynamic objects. */ | ||||
| 816 | if (newdyn && (h->elf_link_hash_flags & ELF_LINK_DYNAMIC_DEF020000) == 0) | ||||
| 817 | { | ||||
| 818 | if (!bfd_is_und_section (sec)((sec) == ((asection *) &bfd_und_section))) | ||||
| 819 | h->elf_link_hash_flags |= ELF_LINK_DYNAMIC_DEF020000; | ||||
| 820 | else | ||||
| 821 | { | ||||
| 822 | /* Check if this symbol is weak in all dynamic objects. If it | ||||
| 823 | is the first time we see it in a dynamic object, we mark | ||||
| 824 | if it is weak. Otherwise, we clear it. */ | ||||
| 825 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC04) == 0) | ||||
| 826 | { | ||||
| 827 | if (bind == STB_WEAK2) | ||||
| 828 | h->elf_link_hash_flags |= ELF_LINK_DYNAMIC_WEAK040000; | ||||
| 829 | } | ||||
| 830 | else if (bind != STB_WEAK2) | ||||
| 831 | h->elf_link_hash_flags &= ~ELF_LINK_DYNAMIC_WEAK040000; | ||||
| 832 | } | ||||
| 833 | } | ||||
| 834 | |||||
| 835 | /* If the old symbol has non-default visibility, we ignore the new | ||||
| 836 | definition from a dynamic object. */ | ||||
| 837 | if (newdyn | ||||
| 838 | && ELF_ST_VISIBILITY (h->other)((h->other) & 0x3) != STV_DEFAULT0 | ||||
| 839 | && !bfd_is_und_section (sec)((sec) == ((asection *) &bfd_und_section))) | ||||
| 840 | { | ||||
| 841 | *skip = TRUE1; | ||||
| 842 | /* Make sure this symbol is dynamic. */ | ||||
| 843 | h->elf_link_hash_flags |= ELF_LINK_HASH_REF_DYNAMIC04; | ||||
| 844 | /* A protected symbol has external availability. Make sure it is | ||||
| 845 | recorded as dynamic. | ||||
| 846 | |||||
| 847 | FIXME: Should we check type and size for protected symbol? */ | ||||
| 848 | if (ELF_ST_VISIBILITY (h->other)((h->other) & 0x3) == STV_PROTECTED3) | ||||
| 849 | return bfd_elf_link_record_dynamic_symbol (info, h); | ||||
| 850 | else | ||||
| 851 | return TRUE1; | ||||
| 852 | } | ||||
| 853 | else if (!newdyn | ||||
| 854 | && ELF_ST_VISIBILITY (sym->st_other)((sym->st_other) & 0x3) != STV_DEFAULT0 | ||||
| 855 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC010) != 0) | ||||
| 856 | { | ||||
| 857 | /* If the new symbol with non-default visibility comes from a | ||||
| 858 | relocatable file and the old definition comes from a dynamic | ||||
| 859 | object, we remove the old definition. */ | ||||
| 860 | if ((*sym_hash)->root.type == bfd_link_hash_indirect) | ||||
| 861 | h = *sym_hash; | ||||
| 862 | |||||
| 863 | if ((h->root.und_next || info->hash->undefs_tail == &h->root) | ||||
| 864 | && bfd_is_und_section (sec)((sec) == ((asection *) &bfd_und_section))) | ||||
| 865 | { | ||||
| 866 | /* If the new symbol is undefined and the old symbol was | ||||
| 867 | also undefined before, we need to make sure | ||||
| 868 | _bfd_generic_link_add_one_symbol doesn't mess | ||||
| 869 | up the linker hash table undefs list. Since the old | ||||
| 870 | definition came from a dynamic object, it is still on the | ||||
| 871 | undefs list. */ | ||||
| 872 | h->root.type = bfd_link_hash_undefined; | ||||
| 873 | /* FIXME: What if the new symbol is weak undefined? */ | ||||
| 874 | h->root.u.undef.abfd = abfd; | ||||
| 875 | } | ||||
| 876 | else | ||||
| 877 | { | ||||
| 878 | h->root.type = bfd_link_hash_new; | ||||
| 879 | h->root.u.undef.abfd = NULL((void*)0); | ||||
| 880 | } | ||||
| 881 | |||||
| 882 | if (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC010) | ||||
| 883 | { | ||||
| 884 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_DEF_DYNAMIC010; | ||||
| 885 | h->elf_link_hash_flags |= (ELF_LINK_HASH_REF_DYNAMIC04 | ||||
| 886 | | ELF_LINK_DYNAMIC_DEF020000); | ||||
| 887 | } | ||||
| 888 | /* FIXME: Should we check type and size for protected symbol? */ | ||||
| 889 | h->size = 0; | ||||
| 890 | h->type = 0; | ||||
| 891 | return TRUE1; | ||||
| 892 | } | ||||
| 893 | |||||
| 894 | /* Differentiate strong and weak symbols. */ | ||||
| 895 | newweak = bind == STB_WEAK2; | ||||
| 896 | oldweak = (h->root.type == bfd_link_hash_defweak | ||||
| 897 | || h->root.type == bfd_link_hash_undefweak); | ||||
| 898 | |||||
| 899 | /* If a new weak symbol definition comes from a regular file and the | ||||
| 900 | old symbol comes from a dynamic library, we treat the new one as | ||||
| 901 | strong. Similarly, an old weak symbol definition from a regular | ||||
| 902 | file is treated as strong when the new symbol comes from a dynamic | ||||
| 903 | library. Further, an old weak symbol from a dynamic library is | ||||
| 904 | treated as strong if the new symbol is from a dynamic library. | ||||
| 905 | This reflects the way glibc's ld.so works. | ||||
| 906 | |||||
| 907 | Do this before setting *type_change_ok or *size_change_ok so that | ||||
| 908 | we warn properly when dynamic library symbols are overridden. */ | ||||
| 909 | |||||
| 910 | if (newdef && !newdyn && olddyn) | ||||
| 911 | newweak = FALSE0; | ||||
| 912 | if (olddef && newdyn) | ||||
| 913 | oldweak = FALSE0; | ||||
| 914 | |||||
| 915 | /* It's OK to change the type if either the existing symbol or the | ||||
| 916 | new symbol is weak. A type change is also OK if the old symbol | ||||
| 917 | is undefined and the new symbol is defined. */ | ||||
| 918 | |||||
| 919 | if (oldweak | ||||
| 920 | || newweak | ||||
| 921 | || (newdef | ||||
| 922 | && h->root.type == bfd_link_hash_undefined)) | ||||
| 923 | *type_change_ok = TRUE1; | ||||
| 924 | |||||
| 925 | /* It's OK to change the size if either the existing symbol or the | ||||
| 926 | new symbol is weak, or if the old symbol is undefined. */ | ||||
| 927 | |||||
| 928 | if (*type_change_ok | ||||
| 929 | || h->root.type == bfd_link_hash_undefined) | ||||
| 930 | *size_change_ok = TRUE1; | ||||
| 931 | |||||
| 932 | /* NEWDYNCOMMON and OLDDYNCOMMON indicate whether the new or old | ||||
| 933 | symbol, respectively, appears to be a common symbol in a dynamic | ||||
| 934 | object. If a symbol appears in an uninitialized section, and is | ||||
| 935 | not weak, and is not a function, then it may be a common symbol | ||||
| 936 | which was resolved when the dynamic object was created. We want | ||||
| 937 | to treat such symbols specially, because they raise special | ||||
| 938 | considerations when setting the symbol size: if the symbol | ||||
| 939 | appears as a common symbol in a regular object, and the size in | ||||
| 940 | the regular object is larger, we must make sure that we use the | ||||
| 941 | larger size. This problematic case can always be avoided in C, | ||||
| 942 | but it must be handled correctly when using Fortran shared | ||||
| 943 | libraries. | ||||
| 944 | |||||
| 945 | Note that if NEWDYNCOMMON is set, NEWDEF will be set, and | ||||
| 946 | likewise for OLDDYNCOMMON and OLDDEF. | ||||
| 947 | |||||
| 948 | Note that this test is just a heuristic, and that it is quite | ||||
| 949 | possible to have an uninitialized symbol in a shared object which | ||||
| 950 | is really a definition, rather than a common symbol. This could | ||||
| 951 | lead to some minor confusion when the symbol really is a common | ||||
| 952 | symbol in some regular object. However, I think it will be | ||||
| 953 | harmless. */ | ||||
| 954 | |||||
| 955 | if (newdyn | ||||
| 956 | && newdef | ||||
| 957 | && !newweak | ||||
| 958 | && (sec->flags & SEC_ALLOC0x001) != 0 | ||||
| 959 | && (sec->flags & SEC_LOAD0x002) == 0 | ||||
| 960 | && sym->st_size > 0 | ||||
| 961 | && ELF_ST_TYPE (sym->st_info)((sym->st_info) & 0xF) != STT_FUNC2) | ||||
| 962 | newdyncommon = TRUE1; | ||||
| 963 | else | ||||
| 964 | newdyncommon = FALSE0; | ||||
| 965 | |||||
| 966 | if (olddyn | ||||
| 967 | && olddef | ||||
| 968 | && h->root.type == bfd_link_hash_defined | ||||
| 969 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC010) != 0 | ||||
| 970 | && (h->root.u.def.section->flags & SEC_ALLOC0x001) != 0 | ||||
| 971 | && (h->root.u.def.section->flags & SEC_LOAD0x002) == 0 | ||||
| 972 | && h->size > 0 | ||||
| 973 | && h->type != STT_FUNC2) | ||||
| 974 | olddyncommon = TRUE1; | ||||
| 975 | else | ||||
| 976 | olddyncommon = FALSE0; | ||||
| 977 | |||||
| 978 | /* If both the old and the new symbols look like common symbols in a | ||||
| 979 | dynamic object, set the size of the symbol to the larger of the | ||||
| 980 | two. */ | ||||
| 981 | |||||
| 982 | if (olddyncommon | ||||
| 983 | && newdyncommon | ||||
| 984 | && sym->st_size != h->size) | ||||
| 985 | { | ||||
| 986 | /* Since we think we have two common symbols, issue a multiple | ||||
| 987 | common warning if desired. Note that we only warn if the | ||||
| 988 | size is different. If the size is the same, we simply let | ||||
| 989 | the old symbol override the new one as normally happens with | ||||
| 990 | symbols defined in dynamic objects. */ | ||||
| 991 | |||||
| 992 | if (! ((*info->callbacks->multiple_common) | ||||
| 993 | (info, h->root.root.string, oldbfd, bfd_link_hash_common, | ||||
| 994 | h->size, abfd, bfd_link_hash_common, sym->st_size))) | ||||
| 995 | return FALSE0; | ||||
| 996 | |||||
| 997 | if (sym->st_size > h->size) | ||||
| 998 | h->size = sym->st_size; | ||||
| 999 | |||||
| 1000 | *size_change_ok = TRUE1; | ||||
| 1001 | } | ||||
| 1002 | |||||
| 1003 | /* If we are looking at a dynamic object, and we have found a | ||||
| 1004 | definition, we need to see if the symbol was already defined by | ||||
| 1005 | some other object. If so, we want to use the existing | ||||
| 1006 | definition, and we do not want to report a multiple symbol | ||||
| 1007 | definition error; we do this by clobbering *PSEC to be | ||||
| 1008 | bfd_und_section_ptr. | ||||
| 1009 | |||||
| 1010 | We treat a common symbol as a definition if the symbol in the | ||||
| 1011 | shared library is a function, since common symbols always | ||||
| 1012 | represent variables; this can cause confusion in principle, but | ||||
| 1013 | any such confusion would seem to indicate an erroneous program or | ||||
| 1014 | shared library. We also permit a common symbol in a regular | ||||
| 1015 | object to override a weak symbol in a shared object. */ | ||||
| 1016 | |||||
| 1017 | if (newdyn | ||||
| 1018 | && newdef | ||||
| 1019 | && (olddef | ||||
| 1020 | || (h->root.type == bfd_link_hash_common | ||||
| 1021 | && (newweak | ||||
| 1022 | || ELF_ST_TYPE (sym->st_info)((sym->st_info) & 0xF) == STT_FUNC2)))) | ||||
| 1023 | { | ||||
| 1024 | *override = TRUE1; | ||||
| 1025 | newdef = FALSE0; | ||||
| 1026 | newdyncommon = FALSE0; | ||||
| 1027 | |||||
| 1028 | *psec = sec = bfd_und_section_ptr((asection *) &bfd_und_section); | ||||
| 1029 | *size_change_ok = TRUE1; | ||||
| 1030 | |||||
| 1031 | /* If we get here when the old symbol is a common symbol, then | ||||
| 1032 | we are explicitly letting it override a weak symbol or | ||||
| 1033 | function in a dynamic object, and we don't want to warn about | ||||
| 1034 | a type change. If the old symbol is a defined symbol, a type | ||||
| 1035 | change warning may still be appropriate. */ | ||||
| 1036 | |||||
| 1037 | if (h->root.type == bfd_link_hash_common) | ||||
| 1038 | *type_change_ok = TRUE1; | ||||
| 1039 | } | ||||
| 1040 | |||||
| 1041 | /* Handle the special case of an old common symbol merging with a | ||||
| 1042 | new symbol which looks like a common symbol in a shared object. | ||||
| 1043 | We change *PSEC and *PVALUE to make the new symbol look like a | ||||
| 1044 | common symbol, and let _bfd_generic_link_add_one_symbol will do | ||||
| 1045 | the right thing. */ | ||||
| 1046 | |||||
| 1047 | if (newdyncommon | ||||
| 1048 | && h->root.type == bfd_link_hash_common) | ||||
| 1049 | { | ||||
| 1050 | *override = TRUE1; | ||||
| 1051 | newdef = FALSE0; | ||||
| 1052 | newdyncommon = FALSE0; | ||||
| 1053 | *pvalue = sym->st_size; | ||||
| 1054 | *psec = sec = bfd_com_section_ptr((asection *) &bfd_com_section); | ||||
| 1055 | *size_change_ok = TRUE1; | ||||
| 1056 | } | ||||
| 1057 | |||||
| 1058 | /* If the old symbol is from a dynamic object, and the new symbol is | ||||
| 1059 | a definition which is not from a dynamic object, then the new | ||||
| 1060 | symbol overrides the old symbol. Symbols from regular files | ||||
| 1061 | always take precedence over symbols from dynamic objects, even if | ||||
| 1062 | they are defined after the dynamic object in the link. | ||||
| 1063 | |||||
| 1064 | As above, we again permit a common symbol in a regular object to | ||||
| 1065 | override a definition in a shared object if the shared object | ||||
| 1066 | symbol is a function or is weak. */ | ||||
| 1067 | |||||
| 1068 | flip = NULL((void*)0); | ||||
| 1069 | if (! newdyn | ||||
| 1070 | && (newdef | ||||
| 1071 | || (bfd_is_com_section (sec)(((sec)->flags & 0x8000) != 0) | ||||
| 1072 | && (oldweak | ||||
| 1073 | || h->type == STT_FUNC2))) | ||||
| 1074 | && olddyn | ||||
| 1075 | && olddef | ||||
| 1076 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC010) != 0) | ||||
| 1077 | { | ||||
| 1078 | /* Change the hash table entry to undefined, and let | ||||
| 1079 | _bfd_generic_link_add_one_symbol do the right thing with the | ||||
| 1080 | new definition. */ | ||||
| 1081 | |||||
| 1082 | h->root.type = bfd_link_hash_undefined; | ||||
| 1083 | h->root.u.undef.abfd = h->root.u.def.section->owner; | ||||
| 1084 | *size_change_ok = TRUE1; | ||||
| 1085 | |||||
| 1086 | olddef = FALSE0; | ||||
| 1087 | olddyncommon = FALSE0; | ||||
| 1088 | |||||
| 1089 | /* We again permit a type change when a common symbol may be | ||||
| 1090 | overriding a function. */ | ||||
| 1091 | |||||
| 1092 | if (bfd_is_com_section (sec)(((sec)->flags & 0x8000) != 0)) | ||||
| 1093 | *type_change_ok = TRUE1; | ||||
| 1094 | |||||
| 1095 | if ((*sym_hash)->root.type == bfd_link_hash_indirect) | ||||
| 1096 | flip = *sym_hash; | ||||
| 1097 | else | ||||
| 1098 | /* This union may have been set to be non-NULL when this symbol | ||||
| 1099 | was seen in a dynamic object. We must force the union to be | ||||
| 1100 | NULL, so that it is correct for a regular symbol. */ | ||||
| 1101 | h->verinfo.vertree = NULL((void*)0); | ||||
| 1102 | } | ||||
| 1103 | |||||
| 1104 | /* Handle the special case of a new common symbol merging with an | ||||
| 1105 | old symbol that looks like it might be a common symbol defined in | ||||
| 1106 | a shared object. Note that we have already handled the case in | ||||
| 1107 | which a new common symbol should simply override the definition | ||||
| 1108 | in the shared library. */ | ||||
| 1109 | |||||
| 1110 | if (! newdyn | ||||
| 1111 | && bfd_is_com_section (sec)(((sec)->flags & 0x8000) != 0) | ||||
| 1112 | && olddyncommon) | ||||
| 1113 | { | ||||
| 1114 | /* It would be best if we could set the hash table entry to a | ||||
| 1115 | common symbol, but we don't know what to use for the section | ||||
| 1116 | or the alignment. */ | ||||
| 1117 | if (! ((*info->callbacks->multiple_common) | ||||
| 1118 | (info, h->root.root.string, oldbfd, bfd_link_hash_common, | ||||
| 1119 | h->size, abfd, bfd_link_hash_common, sym->st_size))) | ||||
| 1120 | return FALSE0; | ||||
| 1121 | |||||
| 1122 | /* If the presumed common symbol in the dynamic object is | ||||
| 1123 | larger, pretend that the new symbol has its size. */ | ||||
| 1124 | |||||
| 1125 | if (h->size > *pvalue) | ||||
| 1126 | *pvalue = h->size; | ||||
| 1127 | |||||
| 1128 | /* FIXME: We no longer know the alignment required by the symbol | ||||
| 1129 | in the dynamic object, so we just wind up using the one from | ||||
| 1130 | the regular object. */ | ||||
| 1131 | |||||
| 1132 | olddef = FALSE0; | ||||
| 1133 | olddyncommon = FALSE0; | ||||
| 1134 | |||||
| 1135 | h->root.type = bfd_link_hash_undefined; | ||||
| 1136 | h->root.u.undef.abfd = h->root.u.def.section->owner; | ||||
| 1137 | |||||
| 1138 | *size_change_ok = TRUE1; | ||||
| 1139 | *type_change_ok = TRUE1; | ||||
| 1140 | |||||
| 1141 | if ((*sym_hash)->root.type == bfd_link_hash_indirect) | ||||
| 1142 | flip = *sym_hash; | ||||
| 1143 | else | ||||
| 1144 | h->verinfo.vertree = NULL((void*)0); | ||||
| 1145 | } | ||||
| 1146 | |||||
| 1147 | if (flip != NULL((void*)0)) | ||||
| 1148 | { | ||||
| 1149 | /* Handle the case where we had a versioned symbol in a dynamic | ||||
| 1150 | library and now find a definition in a normal object. In this | ||||
| 1151 | case, we make the versioned symbol point to the normal one. */ | ||||
| 1152 | const struct elf_backend_data *bed = get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data ); | ||||
| 1153 | flip->root.type = h->root.type; | ||||
| 1154 | h->root.type = bfd_link_hash_indirect; | ||||
| 1155 | h->root.u.i.link = (struct bfd_link_hash_entry *) flip; | ||||
| 1156 | (*bed->elf_backend_copy_indirect_symbol) (bed, flip, h); | ||||
| 1157 | flip->root.u.undef.abfd = h->root.u.undef.abfd; | ||||
| 1158 | if (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC010) | ||||
| 1159 | { | ||||
| 1160 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_DEF_DYNAMIC010; | ||||
| 1161 | flip->elf_link_hash_flags |= ELF_LINK_HASH_REF_DYNAMIC04; | ||||
| 1162 | } | ||||
| 1163 | } | ||||
| 1164 | |||||
| 1165 | return TRUE1; | ||||
| 1166 | } | ||||
| 1167 | |||||
| 1168 | /* This function is called to create an indirect symbol from the | ||||
| 1169 | default for the symbol with the default version if needed. The | ||||
| 1170 | symbol is described by H, NAME, SYM, PSEC, VALUE, and OVERRIDE. We | ||||
| 1171 | set DYNSYM if the new indirect symbol is dynamic. */ | ||||
| 1172 | |||||
| 1173 | bfd_boolean | ||||
| 1174 | _bfd_elf_add_default_symbol (bfd *abfd, | ||||
| 1175 | struct bfd_link_info *info, | ||||
| 1176 | struct elf_link_hash_entry *h, | ||||
| 1177 | const char *name, | ||||
| 1178 | Elf_Internal_Sym *sym, | ||||
| 1179 | asection **psec, | ||||
| 1180 | bfd_vma *value, | ||||
| 1181 | bfd_boolean *dynsym, | ||||
| 1182 | bfd_boolean override) | ||||
| 1183 | { | ||||
| 1184 | bfd_boolean type_change_ok; | ||||
| 1185 | bfd_boolean size_change_ok; | ||||
| 1186 | bfd_boolean skip; | ||||
| 1187 | char *shortname; | ||||
| 1188 | struct elf_link_hash_entry *hi; | ||||
| 1189 | struct bfd_link_hash_entry *bh; | ||||
| 1190 | const struct elf_backend_data *bed; | ||||
| 1191 | bfd_boolean collect; | ||||
| 1192 | bfd_boolean dynamic; | ||||
| 1193 | char *p; | ||||
| 1194 | size_t len, shortlen; | ||||
| 1195 | asection *sec; | ||||
| 1196 | |||||
| 1197 | /* If this symbol has a version, and it is the default version, we | ||||
| 1198 | create an indirect symbol from the default name to the fully | ||||
| 1199 | decorated name. This will cause external references which do not | ||||
| 1200 | specify a version to be bound to this version of the symbol. */ | ||||
| 1201 | p = strchr (name, ELF_VER_CHR'@'); | ||||
| 1202 | if (p == NULL((void*)0) || p[1] != ELF_VER_CHR'@') | ||||
| 1203 | return TRUE1; | ||||
| 1204 | |||||
| 1205 | if (override) | ||||
| 1206 | { | ||||
| 1207 | /* We are overridden by an old definition. We need to check if we | ||||
| 1208 | need to create the indirect symbol from the default name. */ | ||||
| 1209 | hi = elf_link_hash_lookup (elf_hash_table (info), name, TRUE,((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( name), (1), (0), (0))) | ||||
| 1210 | FALSE, FALSE)((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( name), (1), (0), (0))); | ||||
| 1211 | BFD_ASSERT (hi != NULL){ if (!(hi != ((void*)0))) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,1211); }; | ||||
| 1212 | if (hi == h) | ||||
| 1213 | return TRUE1; | ||||
| 1214 | while (hi->root.type == bfd_link_hash_indirect | ||||
| 1215 | || hi->root.type == bfd_link_hash_warning) | ||||
| 1216 | { | ||||
| 1217 | hi = (struct elf_link_hash_entry *) hi->root.u.i.link; | ||||
| 1218 | if (hi == h) | ||||
| 1219 | return TRUE1; | ||||
| 1220 | } | ||||
| 1221 | } | ||||
| 1222 | |||||
| 1223 | bed = get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data ); | ||||
| 1224 | collect = bed->collect; | ||||
| 1225 | dynamic = (abfd->flags & DYNAMIC0x40) != 0; | ||||
| 1226 | |||||
| 1227 | shortlen = p - name; | ||||
| 1228 | shortname = bfd_hash_allocate (&info->hash->table, shortlen + 1); | ||||
| 1229 | if (shortname == NULL((void*)0)) | ||||
| 1230 | return FALSE0; | ||||
| 1231 | memcpy (shortname, name, shortlen); | ||||
| 1232 | shortname[shortlen] = '\0'; | ||||
| 1233 | |||||
| 1234 | /* We are going to create a new symbol. Merge it with any existing | ||||
| 1235 | symbol with this name. For the purposes of the merge, act as | ||||
| 1236 | though we were defining the symbol we just defined, although we | ||||
| 1237 | actually going to define an indirect symbol. */ | ||||
| 1238 | type_change_ok = FALSE0; | ||||
| 1239 | size_change_ok = FALSE0; | ||||
| 1240 | sec = *psec; | ||||
| 1241 | if (!_bfd_elf_merge_symbol (abfd, info, shortname, sym, &sec, value, | ||||
| 1242 | &hi, &skip, &override, &type_change_ok, | ||||
| 1243 | &size_change_ok)) | ||||
| 1244 | return FALSE0; | ||||
| 1245 | |||||
| 1246 | if (skip) | ||||
| 1247 | goto nondefault; | ||||
| 1248 | |||||
| 1249 | if (! override) | ||||
| 1250 | { | ||||
| 1251 | bh = &hi->root; | ||||
| 1252 | if (! (_bfd_generic_link_add_one_symbol | ||||
| 1253 | (info, abfd, shortname, BSF_INDIRECT0x2000, bfd_ind_section_ptr((asection *) &bfd_ind_section), | ||||
| 1254 | 0, name, FALSE0, collect, &bh))) | ||||
| 1255 | return FALSE0; | ||||
| 1256 | hi = (struct elf_link_hash_entry *) bh; | ||||
| 1257 | } | ||||
| 1258 | else | ||||
| 1259 | { | ||||
| 1260 | /* In this case the symbol named SHORTNAME is overriding the | ||||
| 1261 | indirect symbol we want to add. We were planning on making | ||||
| 1262 | SHORTNAME an indirect symbol referring to NAME. SHORTNAME | ||||
| 1263 | is the name without a version. NAME is the fully versioned | ||||
| 1264 | name, and it is the default version. | ||||
| 1265 | |||||
| 1266 | Overriding means that we already saw a definition for the | ||||
| 1267 | symbol SHORTNAME in a regular object, and it is overriding | ||||
| 1268 | the symbol defined in the dynamic object. | ||||
| 1269 | |||||
| 1270 | When this happens, we actually want to change NAME, the | ||||
| 1271 | symbol we just added, to refer to SHORTNAME. This will cause | ||||
| 1272 | references to NAME in the shared object to become references | ||||
| 1273 | to SHORTNAME in the regular object. This is what we expect | ||||
| 1274 | when we override a function in a shared object: that the | ||||
| 1275 | references in the shared object will be mapped to the | ||||
| 1276 | definition in the regular object. */ | ||||
| 1277 | |||||
| 1278 | while (hi->root.type == bfd_link_hash_indirect | ||||
| 1279 | || hi->root.type == bfd_link_hash_warning) | ||||
| 1280 | hi = (struct elf_link_hash_entry *) hi->root.u.i.link; | ||||
| 1281 | |||||
| 1282 | h->root.type = bfd_link_hash_indirect; | ||||
| 1283 | h->root.u.i.link = (struct bfd_link_hash_entry *) hi; | ||||
| 1284 | if (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC010) | ||||
| 1285 | { | ||||
| 1286 | h->elf_link_hash_flags &=~ ELF_LINK_HASH_DEF_DYNAMIC010; | ||||
| 1287 | hi->elf_link_hash_flags |= ELF_LINK_HASH_REF_DYNAMIC04; | ||||
| 1288 | if (hi->elf_link_hash_flags | ||||
| 1289 | & (ELF_LINK_HASH_REF_REGULAR01 | ||||
| 1290 | | ELF_LINK_HASH_DEF_REGULAR02)) | ||||
| 1291 | { | ||||
| 1292 | if (! bfd_elf_link_record_dynamic_symbol (info, hi)) | ||||
| 1293 | return FALSE0; | ||||
| 1294 | } | ||||
| 1295 | } | ||||
| 1296 | |||||
| 1297 | /* Now set HI to H, so that the following code will set the | ||||
| 1298 | other fields correctly. */ | ||||
| 1299 | hi = h; | ||||
| 1300 | } | ||||
| 1301 | |||||
| 1302 | /* If there is a duplicate definition somewhere, then HI may not | ||||
| 1303 | point to an indirect symbol. We will have reported an error to | ||||
| 1304 | the user in that case. */ | ||||
| 1305 | |||||
| 1306 | if (hi->root.type == bfd_link_hash_indirect) | ||||
| 1307 | { | ||||
| 1308 | struct elf_link_hash_entry *ht; | ||||
| 1309 | |||||
| 1310 | ht = (struct elf_link_hash_entry *) hi->root.u.i.link; | ||||
| 1311 | (*bed->elf_backend_copy_indirect_symbol) (bed, ht, hi); | ||||
| 1312 | |||||
| 1313 | /* See if the new flags lead us to realize that the symbol must | ||||
| 1314 | be dynamic. */ | ||||
| 1315 | if (! *dynsym) | ||||
| 1316 | { | ||||
| 1317 | if (! dynamic) | ||||
| 1318 | { | ||||
| 1319 | if (info->shared | ||||
| 1320 | || ((hi->elf_link_hash_flags | ||||
| 1321 | & ELF_LINK_HASH_REF_DYNAMIC04) != 0)) | ||||
| 1322 | *dynsym = TRUE1; | ||||
| 1323 | } | ||||
| 1324 | else | ||||
| 1325 | { | ||||
| 1326 | if ((hi->elf_link_hash_flags | ||||
| 1327 | & ELF_LINK_HASH_REF_REGULAR01) != 0) | ||||
| 1328 | *dynsym = TRUE1; | ||||
| 1329 | } | ||||
| 1330 | } | ||||
| 1331 | } | ||||
| 1332 | |||||
| 1333 | /* We also need to define an indirection from the nondefault version | ||||
| 1334 | of the symbol. */ | ||||
| 1335 | |||||
| 1336 | nondefault: | ||||
| 1337 | len = strlen (name); | ||||
| 1338 | shortname = bfd_hash_allocate (&info->hash->table, len); | ||||
| 1339 | if (shortname == NULL((void*)0)) | ||||
| 1340 | return FALSE0; | ||||
| 1341 | memcpy (shortname, name, shortlen); | ||||
| 1342 | memcpy (shortname + shortlen, p + 1, len - shortlen); | ||||
| 1343 | |||||
| 1344 | /* Once again, merge with any existing symbol. */ | ||||
| 1345 | type_change_ok = FALSE0; | ||||
| 1346 | size_change_ok = FALSE0; | ||||
| 1347 | sec = *psec; | ||||
| 1348 | if (!_bfd_elf_merge_symbol (abfd, info, shortname, sym, &sec, value, | ||||
| 1349 | &hi, &skip, &override, &type_change_ok, | ||||
| 1350 | &size_change_ok)) | ||||
| 1351 | return FALSE0; | ||||
| 1352 | |||||
| 1353 | if (skip) | ||||
| 1354 | return TRUE1; | ||||
| 1355 | |||||
| 1356 | if (override) | ||||
| 1357 | { | ||||
| 1358 | /* Here SHORTNAME is a versioned name, so we don't expect to see | ||||
| 1359 | the type of override we do in the case above unless it is | ||||
| 1360 | overridden by a versioned definition. */ | ||||
| 1361 | if (hi->root.type != bfd_link_hash_defined | ||||
| 1362 | && hi->root.type != bfd_link_hash_defweak) | ||||
| 1363 | (*_bfd_error_handler) | ||||
| 1364 | (_("%s: warning: unexpected redefinition of indirect versioned symbol `%s'")("%s: warning: unexpected redefinition of indirect versioned symbol `%s'" ), | ||||
| 1365 | bfd_archive_filename (abfd), shortname); | ||||
| 1366 | } | ||||
| 1367 | else | ||||
| 1368 | { | ||||
| 1369 | bh = &hi->root; | ||||
| 1370 | if (! (_bfd_generic_link_add_one_symbol | ||||
| 1371 | (info, abfd, shortname, BSF_INDIRECT0x2000, | ||||
| 1372 | bfd_ind_section_ptr((asection *) &bfd_ind_section), 0, name, FALSE0, collect, &bh))) | ||||
| 1373 | return FALSE0; | ||||
| 1374 | hi = (struct elf_link_hash_entry *) bh; | ||||
| 1375 | |||||
| 1376 | /* If there is a duplicate definition somewhere, then HI may not | ||||
| 1377 | point to an indirect symbol. We will have reported an error | ||||
| 1378 | to the user in that case. */ | ||||
| 1379 | |||||
| 1380 | if (hi->root.type == bfd_link_hash_indirect) | ||||
| 1381 | { | ||||
| 1382 | (*bed->elf_backend_copy_indirect_symbol) (bed, h, hi); | ||||
| 1383 | |||||
| 1384 | /* See if the new flags lead us to realize that the symbol | ||||
| 1385 | must be dynamic. */ | ||||
| 1386 | if (! *dynsym) | ||||
| 1387 | { | ||||
| 1388 | if (! dynamic) | ||||
| 1389 | { | ||||
| 1390 | if (info->shared | ||||
| 1391 | || ((hi->elf_link_hash_flags | ||||
| 1392 | & ELF_LINK_HASH_REF_DYNAMIC04) != 0)) | ||||
| 1393 | *dynsym = TRUE1; | ||||
| 1394 | } | ||||
| 1395 | else | ||||
| 1396 | { | ||||
| 1397 | if ((hi->elf_link_hash_flags | ||||
| 1398 | & ELF_LINK_HASH_REF_REGULAR01) != 0) | ||||
| 1399 | *dynsym = TRUE1; | ||||
| 1400 | } | ||||
| 1401 | } | ||||
| 1402 | } | ||||
| 1403 | } | ||||
| 1404 | |||||
| 1405 | return TRUE1; | ||||
| 1406 | } | ||||
| 1407 | |||||
| 1408 | /* This routine is used to export all defined symbols into the dynamic | ||||
| 1409 | symbol table. It is called via elf_link_hash_traverse. */ | ||||
| 1410 | |||||
| 1411 | bfd_boolean | ||||
| 1412 | _bfd_elf_export_symbol (struct elf_link_hash_entry *h, void *data) | ||||
| 1413 | { | ||||
| 1414 | struct elf_info_failed *eif = data; | ||||
| 1415 | |||||
| 1416 | /* Ignore indirect symbols. These are added by the versioning code. */ | ||||
| 1417 | if (h->root.type == bfd_link_hash_indirect) | ||||
| 1418 | return TRUE1; | ||||
| 1419 | |||||
| 1420 | if (h->root.type == bfd_link_hash_warning) | ||||
| 1421 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | ||||
| 1422 | |||||
| 1423 | if (h->dynindx == -1 | ||||
| 1424 | && (h->elf_link_hash_flags | ||||
| 1425 | & (ELF_LINK_HASH_DEF_REGULAR02 | ELF_LINK_HASH_REF_REGULAR01)) != 0) | ||||
| 1426 | { | ||||
| 1427 | struct bfd_elf_version_tree *t; | ||||
| 1428 | struct bfd_elf_version_expr *d; | ||||
| 1429 | |||||
| 1430 | for (t = eif->verdefs; t != NULL((void*)0); t = t->next) | ||||
| 1431 | { | ||||
| 1432 | if (t->globals.list != NULL((void*)0)) | ||||
| 1433 | { | ||||
| 1434 | d = (*t->match) (&t->globals, NULL((void*)0), h->root.root.string); | ||||
| 1435 | if (d != NULL((void*)0)) | ||||
| 1436 | goto doit; | ||||
| 1437 | } | ||||
| 1438 | |||||
| 1439 | if (t->locals.list != NULL((void*)0)) | ||||
| 1440 | { | ||||
| 1441 | d = (*t->match) (&t->locals, NULL((void*)0), h->root.root.string); | ||||
| 1442 | if (d != NULL((void*)0)) | ||||
| 1443 | return TRUE1; | ||||
| 1444 | } | ||||
| 1445 | } | ||||
| 1446 | |||||
| 1447 | if (!eif->verdefs) | ||||
| 1448 | { | ||||
| 1449 | doit: | ||||
| 1450 | if (! bfd_elf_link_record_dynamic_symbol (eif->info, h)) | ||||
| 1451 | { | ||||
| 1452 | eif->failed = TRUE1; | ||||
| 1453 | return FALSE0; | ||||
| 1454 | } | ||||
| 1455 | } | ||||
| 1456 | } | ||||
| 1457 | |||||
| 1458 | return TRUE1; | ||||
| 1459 | } | ||||
| 1460 | |||||
| 1461 | /* Look through the symbols which are defined in other shared | ||||
| 1462 | libraries and referenced here. Update the list of version | ||||
| 1463 | dependencies. This will be put into the .gnu.version_r section. | ||||
| 1464 | This function is called via elf_link_hash_traverse. */ | ||||
| 1465 | |||||
| 1466 | bfd_boolean | ||||
| 1467 | _bfd_elf_link_find_version_dependencies (struct elf_link_hash_entry *h, | ||||
| 1468 | void *data) | ||||
| 1469 | { | ||||
| 1470 | struct elf_find_verdep_info *rinfo = data; | ||||
| 1471 | Elf_Internal_Verneed *t; | ||||
| 1472 | Elf_Internal_Vernaux *a; | ||||
| 1473 | bfd_size_type amt; | ||||
| 1474 | |||||
| 1475 | if (h->root.type == bfd_link_hash_warning) | ||||
| 1476 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | ||||
| 1477 | |||||
| 1478 | /* We only care about symbols defined in shared objects with version | ||||
| 1479 | information. */ | ||||
| 1480 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC010) == 0 | ||||
| 1481 | || (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR02) != 0 | ||||
| 1482 | || h->dynindx == -1 | ||||
| 1483 | || h->verinfo.verdef == NULL((void*)0)) | ||||
| 1484 | return TRUE1; | ||||
| 1485 | |||||
| 1486 | /* See if we already know about this version. */ | ||||
| 1487 | for (t = elf_tdata (rinfo->output_bfd)((rinfo->output_bfd) -> tdata.elf_obj_data)->verref; t != NULL((void*)0); t = t->vn_nextref) | ||||
| 1488 | { | ||||
| 1489 | if (t->vn_bfd != h->verinfo.verdef->vd_bfd) | ||||
| 1490 | continue; | ||||
| 1491 | |||||
| 1492 | for (a = t->vn_auxptr; a != NULL((void*)0); a = a->vna_nextptr) | ||||
| 1493 | if (a->vna_nodename == h->verinfo.verdef->vd_nodename) | ||||
| 1494 | return TRUE1; | ||||
| 1495 | |||||
| 1496 | break; | ||||
| 1497 | } | ||||
| 1498 | |||||
| 1499 | /* This is a new version. Add it to tree we are building. */ | ||||
| 1500 | |||||
| 1501 | if (t == NULL((void*)0)) | ||||
| 1502 | { | ||||
| 1503 | amt = sizeof *t; | ||||
| 1504 | t = bfd_zalloc (rinfo->output_bfd, amt); | ||||
| 1505 | if (t == NULL((void*)0)) | ||||
| 1506 | { | ||||
| 1507 | rinfo->failed = TRUE1; | ||||
| 1508 | return FALSE0; | ||||
| 1509 | } | ||||
| 1510 | |||||
| 1511 | t->vn_bfd = h->verinfo.verdef->vd_bfd; | ||||
| 1512 | t->vn_nextref = elf_tdata (rinfo->output_bfd)((rinfo->output_bfd) -> tdata.elf_obj_data)->verref; | ||||
| 1513 | elf_tdata (rinfo->output_bfd)((rinfo->output_bfd) -> tdata.elf_obj_data)->verref = t; | ||||
| 1514 | } | ||||
| 1515 | |||||
| 1516 | amt = sizeof *a; | ||||
| 1517 | a = bfd_zalloc (rinfo->output_bfd, amt); | ||||
| 1518 | |||||
| 1519 | /* Note that we are copying a string pointer here, and testing it | ||||
| 1520 | above. If bfd_elf_string_from_elf_section is ever changed to | ||||
| 1521 | discard the string data when low in memory, this will have to be | ||||
| 1522 | fixed. */ | ||||
| 1523 | a->vna_nodename = h->verinfo.verdef->vd_nodename; | ||||
| 1524 | |||||
| 1525 | a->vna_flags = h->verinfo.verdef->vd_flags; | ||||
| 1526 | a->vna_nextptr = t->vn_auxptr; | ||||
| 1527 | |||||
| 1528 | h->verinfo.verdef->vd_exp_refno = rinfo->vers; | ||||
| 1529 | ++rinfo->vers; | ||||
| 1530 | |||||
| 1531 | a->vna_other = h->verinfo.verdef->vd_exp_refno + 1; | ||||
| 1532 | |||||
| 1533 | t->vn_auxptr = a; | ||||
| 1534 | |||||
| 1535 | return TRUE1; | ||||
| 1536 | } | ||||
| 1537 | |||||
| 1538 | /* Figure out appropriate versions for all the symbols. We may not | ||||
| 1539 | have the version number script until we have read all of the input | ||||
| 1540 | files, so until that point we don't know which symbols should be | ||||
| 1541 | local. This function is called via elf_link_hash_traverse. */ | ||||
| 1542 | |||||
| 1543 | bfd_boolean | ||||
| 1544 | _bfd_elf_link_assign_sym_version (struct elf_link_hash_entry *h, void *data) | ||||
| 1545 | { | ||||
| 1546 | struct elf_assign_sym_version_info *sinfo; | ||||
| 1547 | struct bfd_link_info *info; | ||||
| 1548 | const struct elf_backend_data *bed; | ||||
| 1549 | struct elf_info_failed eif; | ||||
| 1550 | char *p; | ||||
| 1551 | bfd_size_type amt; | ||||
| 1552 | |||||
| 1553 | sinfo = data; | ||||
| 1554 | info = sinfo->info; | ||||
| 1555 | |||||
| 1556 | if (h->root.type == bfd_link_hash_warning) | ||||
| 1557 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | ||||
| 1558 | |||||
| 1559 | /* Fix the symbol flags. */ | ||||
| 1560 | eif.failed = FALSE0; | ||||
| 1561 | eif.info = info; | ||||
| 1562 | if (! _bfd_elf_fix_symbol_flags (h, &eif)) | ||||
| 1563 | { | ||||
| 1564 | if (eif.failed) | ||||
| 1565 | sinfo->failed = TRUE1; | ||||
| 1566 | return FALSE0; | ||||
| 1567 | } | ||||
| 1568 | |||||
| 1569 | /* We only need version numbers for symbols defined in regular | ||||
| 1570 | objects. */ | ||||
| 1571 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR02) == 0) | ||||
| 1572 | return TRUE1; | ||||
| 1573 | |||||
| 1574 | bed = get_elf_backend_data (sinfo->output_bfd)((const struct elf_backend_data *) (sinfo->output_bfd)-> xvec->backend_data); | ||||
| 1575 | p = strchr (h->root.root.string, ELF_VER_CHR'@'); | ||||
| 1576 | if (p != NULL((void*)0) && h->verinfo.vertree == NULL((void*)0)) | ||||
| 1577 | { | ||||
| 1578 | struct bfd_elf_version_tree *t; | ||||
| 1579 | bfd_boolean hidden; | ||||
| 1580 | |||||
| 1581 | hidden = TRUE1; | ||||
| 1582 | |||||
| 1583 | /* There are two consecutive ELF_VER_CHR characters if this is | ||||
| 1584 | not a hidden symbol. */ | ||||
| 1585 | ++p; | ||||
| 1586 | if (*p == ELF_VER_CHR'@') | ||||
| 1587 | { | ||||
| 1588 | hidden = FALSE0; | ||||
| 1589 | ++p; | ||||
| 1590 | } | ||||
| 1591 | |||||
| 1592 | /* If there is no version string, we can just return out. */ | ||||
| 1593 | if (*p == '\0') | ||||
| 1594 | { | ||||
| 1595 | if (hidden) | ||||
| 1596 | h->elf_link_hash_flags |= ELF_LINK_HIDDEN01000; | ||||
| 1597 | return TRUE1; | ||||
| 1598 | } | ||||
| 1599 | |||||
| 1600 | /* Look for the version. If we find it, it is no longer weak. */ | ||||
| 1601 | for (t = sinfo->verdefs; t != NULL((void*)0); t = t->next) | ||||
| 1602 | { | ||||
| 1603 | if (strcmp (t->name, p) == 0) | ||||
| 1604 | { | ||||
| 1605 | size_t len; | ||||
| 1606 | char *alc; | ||||
| 1607 | struct bfd_elf_version_expr *d; | ||||
| 1608 | |||||
| 1609 | len = p - h->root.root.string; | ||||
| 1610 | alc = bfd_malloc (len); | ||||
| 1611 | if (alc == NULL((void*)0)) | ||||
| 1612 | return FALSE0; | ||||
| 1613 | memcpy (alc, h->root.root.string, len - 1); | ||||
| 1614 | alc[len - 1] = '\0'; | ||||
| 1615 | if (alc[len - 2] == ELF_VER_CHR'@') | ||||
| 1616 | alc[len - 2] = '\0'; | ||||
| 1617 | |||||
| 1618 | h->verinfo.vertree = t; | ||||
| 1619 | t->used = TRUE1; | ||||
| 1620 | d = NULL((void*)0); | ||||
| 1621 | |||||
| 1622 | if (t->globals.list != NULL((void*)0)) | ||||
| 1623 | d = (*t->match) (&t->globals, NULL((void*)0), alc); | ||||
| 1624 | |||||
| 1625 | /* See if there is anything to force this symbol to | ||||
| 1626 | local scope. */ | ||||
| 1627 | if (d == NULL((void*)0) && t->locals.list != NULL((void*)0)) | ||||
| 1628 | { | ||||
| 1629 | d = (*t->match) (&t->locals, NULL((void*)0), alc); | ||||
| 1630 | if (d != NULL((void*)0) | ||||
| 1631 | && h->dynindx != -1 | ||||
| 1632 | && info->shared | ||||
| 1633 | && ! info->export_dynamic) | ||||
| 1634 | (*bed->elf_backend_hide_symbol) (info, h, TRUE1); | ||||
| 1635 | } | ||||
| 1636 | |||||
| 1637 | free (alc); | ||||
| 1638 | break; | ||||
| 1639 | } | ||||
| 1640 | } | ||||
| 1641 | |||||
| 1642 | /* If we are building an application, we need to create a | ||||
| 1643 | version node for this version. */ | ||||
| 1644 | if (t == NULL((void*)0) && info->executable) | ||||
| 1645 | { | ||||
| 1646 | struct bfd_elf_version_tree **pp; | ||||
| 1647 | int version_index; | ||||
| 1648 | |||||
| 1649 | /* If we aren't going to export this symbol, we don't need | ||||
| 1650 | to worry about it. */ | ||||
| 1651 | if (h->dynindx == -1) | ||||
| 1652 | return TRUE1; | ||||
| 1653 | |||||
| 1654 | amt = sizeof *t; | ||||
| 1655 | t = bfd_zalloc (sinfo->output_bfd, amt); | ||||
| 1656 | if (t == NULL((void*)0)) | ||||
| 1657 | { | ||||
| 1658 | sinfo->failed = TRUE1; | ||||
| 1659 | return FALSE0; | ||||
| 1660 | } | ||||
| 1661 | |||||
| 1662 | t->name = p; | ||||
| 1663 | t->name_indx = (unsigned int) -1; | ||||
| 1664 | t->used = TRUE1; | ||||
| 1665 | |||||
| 1666 | version_index = 1; | ||||
| 1667 | /* Don't count anonymous version tag. */ | ||||
| 1668 | if (sinfo->verdefs != NULL((void*)0) && sinfo->verdefs->vernum == 0) | ||||
| 1669 | version_index = 0; | ||||
| 1670 | for (pp = &sinfo->verdefs; *pp != NULL((void*)0); pp = &(*pp)->next) | ||||
| 1671 | ++version_index; | ||||
| 1672 | t->vernum = version_index; | ||||
| 1673 | |||||
| 1674 | *pp = t; | ||||
| 1675 | |||||
| 1676 | h->verinfo.vertree = t; | ||||
| 1677 | } | ||||
| 1678 | else if (t == NULL((void*)0)) | ||||
| 1679 | { | ||||
| 1680 | /* We could not find the version for a symbol when | ||||
| 1681 | generating a shared archive. Return an error. */ | ||||
| 1682 | (*_bfd_error_handler) | ||||
| 1683 | (_("%s: undefined versioned symbol name %s")("%s: undefined versioned symbol name %s"), | ||||
| 1684 | bfd_get_filename (sinfo->output_bfd)((char *) (sinfo->output_bfd)->filename), h->root.root.string); | ||||
| 1685 | bfd_set_error (bfd_error_bad_value); | ||||
| 1686 | sinfo->failed = TRUE1; | ||||
| 1687 | return FALSE0; | ||||
| 1688 | } | ||||
| 1689 | |||||
| 1690 | if (hidden) | ||||
| 1691 | h->elf_link_hash_flags |= ELF_LINK_HIDDEN01000; | ||||
| 1692 | } | ||||
| 1693 | |||||
| 1694 | /* If we don't have a version for this symbol, see if we can find | ||||
| 1695 | something. */ | ||||
| 1696 | if (h->verinfo.vertree == NULL((void*)0) && sinfo->verdefs != NULL((void*)0)) | ||||
| 1697 | { | ||||
| 1698 | struct bfd_elf_version_tree *t; | ||||
| 1699 | struct bfd_elf_version_tree *local_ver; | ||||
| 1700 | struct bfd_elf_version_expr *d; | ||||
| 1701 | |||||
| 1702 | /* See if can find what version this symbol is in. If the | ||||
| 1703 | symbol is supposed to be local, then don't actually register | ||||
| 1704 | it. */ | ||||
| 1705 | local_ver = NULL((void*)0); | ||||
| 1706 | for (t = sinfo->verdefs; t != NULL((void*)0); t = t->next) | ||||
| 1707 | { | ||||
| 1708 | if (t->globals.list != NULL((void*)0)) | ||||
| 1709 | { | ||||
| 1710 | bfd_boolean matched; | ||||
| 1711 | |||||
| 1712 | matched = FALSE0; | ||||
| 1713 | d = NULL((void*)0); | ||||
| 1714 | while ((d = (*t->match) (&t->globals, d, | ||||
| 1715 | h->root.root.string)) != NULL((void*)0)) | ||||
| 1716 | if (d->symver) | ||||
| 1717 | matched = TRUE1; | ||||
| 1718 | else | ||||
| 1719 | { | ||||
| 1720 | /* There is a version without definition. Make | ||||
| 1721 | the symbol the default definition for this | ||||
| 1722 | version. */ | ||||
| 1723 | h->verinfo.vertree = t; | ||||
| 1724 | local_ver = NULL((void*)0); | ||||
| 1725 | d->script = 1; | ||||
| 1726 | break; | ||||
| 1727 | } | ||||
| 1728 | if (d != NULL((void*)0)) | ||||
| 1729 | break; | ||||
| 1730 | else if (matched) | ||||
| 1731 | /* There is no undefined version for this symbol. Hide the | ||||
| 1732 | default one. */ | ||||
| 1733 | (*bed->elf_backend_hide_symbol) (info, h, TRUE1); | ||||
| 1734 | } | ||||
| 1735 | |||||
| 1736 | if (t->locals.list != NULL((void*)0)) | ||||
| 1737 | { | ||||
| 1738 | d = NULL((void*)0); | ||||
| 1739 | while ((d = (*t->match) (&t->locals, d, | ||||
| 1740 | h->root.root.string)) != NULL((void*)0)) | ||||
| 1741 | { | ||||
| 1742 | local_ver = t; | ||||
| 1743 | /* If the match is "*", keep looking for a more | ||||
| 1744 | explicit, perhaps even global, match. | ||||
| 1745 | XXX: Shouldn't this be !d->wildcard instead? */ | ||||
| 1746 | if (d->pattern[0] != '*' || d->pattern[1] != '\0') | ||||
| 1747 | break; | ||||
| 1748 | } | ||||
| 1749 | |||||
| 1750 | if (d != NULL((void*)0)) | ||||
| 1751 | break; | ||||
| 1752 | } | ||||
| 1753 | } | ||||
| 1754 | |||||
| 1755 | if (local_ver != NULL((void*)0)) | ||||
| 1756 | { | ||||
| 1757 | h->verinfo.vertree = local_ver; | ||||
| 1758 | if (h->dynindx != -1 | ||||
| 1759 | && info->shared | ||||
| 1760 | && ! info->export_dynamic) | ||||
| 1761 | { | ||||
| 1762 | (*bed->elf_backend_hide_symbol) (info, h, TRUE1); | ||||
| 1763 | } | ||||
| 1764 | } | ||||
| 1765 | } | ||||
| 1766 | |||||
| 1767 | return TRUE1; | ||||
| 1768 | } | ||||
| 1769 | |||||
| 1770 | /* Read and swap the relocs from the section indicated by SHDR. This | ||||
| 1771 | may be either a REL or a RELA section. The relocations are | ||||
| 1772 | translated into RELA relocations and stored in INTERNAL_RELOCS, | ||||
| 1773 | which should have already been allocated to contain enough space. | ||||
| 1774 | The EXTERNAL_RELOCS are a buffer where the external form of the | ||||
| 1775 | relocations should be stored. | ||||
| 1776 | |||||
| 1777 | Returns FALSE if something goes wrong. */ | ||||
| 1778 | |||||
| 1779 | static bfd_boolean | ||||
| 1780 | elf_link_read_relocs_from_section (bfd *abfd, | ||||
| 1781 | asection *sec, | ||||
| 1782 | Elf_Internal_Shdr *shdr, | ||||
| 1783 | void *external_relocs, | ||||
| 1784 | Elf_Internal_Rela *internal_relocs) | ||||
| 1785 | { | ||||
| 1786 | const struct elf_backend_data *bed; | ||||
| 1787 | void (*swap_in) (bfd *, const bfd_byte *, Elf_Internal_Rela *); | ||||
| 1788 | const bfd_byte *erela; | ||||
| 1789 | const bfd_byte *erelaend; | ||||
| 1790 | Elf_Internal_Rela *irela; | ||||
| 1791 | Elf_Internal_Shdr *symtab_hdr; | ||||
| 1792 | size_t nsyms; | ||||
| 1793 | |||||
| 1794 | /* Position ourselves at the start of the section. */ | ||||
| 1795 | if (bfd_seek (abfd, shdr->sh_offset, SEEK_SET0) != 0) | ||||
| 1796 | return FALSE0; | ||||
| 1797 | |||||
| 1798 | /* Read the relocations. */ | ||||
| 1799 | if (bfd_bread (external_relocs, shdr->sh_size, abfd) != shdr->sh_size) | ||||
| 1800 | return FALSE0; | ||||
| 1801 | |||||
| 1802 | symtab_hdr = &elf_tdata (abfd)((abfd) -> tdata.elf_obj_data)->symtab_hdr; | ||||
| 1803 | nsyms = symtab_hdr->sh_size / symtab_hdr->sh_entsize; | ||||
| 1804 | |||||
| 1805 | bed = get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data ); | ||||
| 1806 | |||||
| 1807 | /* Convert the external relocations to the internal format. */ | ||||
| 1808 | if (shdr->sh_entsize == bed->s->sizeof_rel) | ||||
| 1809 | swap_in = bed->s->swap_reloc_in; | ||||
| 1810 | else if (shdr->sh_entsize == bed->s->sizeof_rela) | ||||
| 1811 | swap_in = bed->s->swap_reloca_in; | ||||
| 1812 | else | ||||
| 1813 | { | ||||
| 1814 | bfd_set_error (bfd_error_wrong_format); | ||||
| 1815 | return FALSE0; | ||||
| 1816 | } | ||||
| 1817 | |||||
| 1818 | erela = external_relocs; | ||||
| 1819 | erelaend = erela + shdr->sh_size; | ||||
| 1820 | irela = internal_relocs; | ||||
| 1821 | while (erela < erelaend) | ||||
| 1822 | { | ||||
| 1823 | bfd_vma r_symndx; | ||||
| 1824 | |||||
| 1825 | (*swap_in) (abfd, erela, irela); | ||||
| 1826 | r_symndx = ELF32_R_SYM (irela->r_info)((irela->r_info) >> 8); | ||||
| 1827 | if (bed->s->arch_size == 64) | ||||
| 1828 | r_symndx >>= 24; | ||||
| 1829 | if ((size_t) r_symndx >= nsyms) | ||||
| 1830 | { | ||||
| 1831 | (*_bfd_error_handler) | ||||
| 1832 | (_("%s: bad reloc symbol index (0x%lx >= 0x%lx) for offset 0x%lx in section `%s'")("%s: bad reloc symbol index (0x%lx >= 0x%lx) for offset 0x%lx in section `%s'" ), | ||||
| 1833 | bfd_archive_filename (abfd), (unsigned long) r_symndx, | ||||
| 1834 | (unsigned long) nsyms, irela->r_offset, sec->name); | ||||
| 1835 | bfd_set_error (bfd_error_bad_value); | ||||
| 1836 | return FALSE0; | ||||
| 1837 | } | ||||
| 1838 | irela += bed->s->int_rels_per_ext_rel; | ||||
| 1839 | erela += shdr->sh_entsize; | ||||
| 1840 | } | ||||
| 1841 | |||||
| 1842 | return TRUE1; | ||||
| 1843 | } | ||||
| 1844 | |||||
| 1845 | /* Read and swap the relocs for a section O. They may have been | ||||
| 1846 | cached. If the EXTERNAL_RELOCS and INTERNAL_RELOCS arguments are | ||||
| 1847 | not NULL, they are used as buffers to read into. They are known to | ||||
| 1848 | be large enough. If the INTERNAL_RELOCS relocs argument is NULL, | ||||
| 1849 | the return value is allocated using either malloc or bfd_alloc, | ||||
| 1850 | according to the KEEP_MEMORY argument. If O has two relocation | ||||
| 1851 | sections (both REL and RELA relocations), then the REL_HDR | ||||
| 1852 | relocations will appear first in INTERNAL_RELOCS, followed by the | ||||
| 1853 | REL_HDR2 relocations. */ | ||||
| 1854 | |||||
| 1855 | Elf_Internal_Rela * | ||||
| 1856 | _bfd_elf_link_read_relocs (bfd *abfd, | ||||
| 1857 | asection *o, | ||||
| 1858 | void *external_relocs, | ||||
| 1859 | Elf_Internal_Rela *internal_relocs, | ||||
| 1860 | bfd_boolean keep_memory) | ||||
| 1861 | { | ||||
| 1862 | Elf_Internal_Shdr *rel_hdr; | ||||
| 1863 | void *alloc1 = NULL((void*)0); | ||||
| 1864 | Elf_Internal_Rela *alloc2 = NULL((void*)0); | ||||
| 1865 | const struct elf_backend_data *bed = get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data ); | ||||
| 1866 | |||||
| 1867 | if (elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->relocs != NULL((void*)0)) | ||||
| 1868 | return elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->relocs; | ||||
| 1869 | |||||
| 1870 | if (o->reloc_count == 0) | ||||
| 1871 | return NULL((void*)0); | ||||
| 1872 | |||||
| 1873 | rel_hdr = &elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hdr; | ||||
| 1874 | |||||
| 1875 | if (internal_relocs == NULL((void*)0)) | ||||
| 1876 | { | ||||
| 1877 | bfd_size_type size; | ||||
| 1878 | |||||
| 1879 | size = o->reloc_count; | ||||
| 1880 | size *= bed->s->int_rels_per_ext_rel * sizeof (Elf_Internal_Rela); | ||||
| 1881 | if (keep_memory) | ||||
| 1882 | internal_relocs = bfd_alloc (abfd, size); | ||||
| 1883 | else | ||||
| 1884 | internal_relocs = alloc2 = bfd_malloc (size); | ||||
| 1885 | if (internal_relocs == NULL((void*)0)) | ||||
| 1886 | goto error_return; | ||||
| 1887 | } | ||||
| 1888 | |||||
| 1889 | if (external_relocs == NULL((void*)0)) | ||||
| 1890 | { | ||||
| 1891 | bfd_size_type size = rel_hdr->sh_size; | ||||
| 1892 | |||||
| 1893 | if (elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hdr2) | ||||
| 1894 | size += elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hdr2->sh_size; | ||||
| 1895 | alloc1 = bfd_malloc (size); | ||||
| 1896 | if (alloc1 == NULL((void*)0)) | ||||
| 1897 | goto error_return; | ||||
| 1898 | external_relocs = alloc1; | ||||
| 1899 | } | ||||
| 1900 | |||||
| 1901 | if (!elf_link_read_relocs_from_section (abfd, o, rel_hdr, | ||||
| 1902 | external_relocs, | ||||
| 1903 | internal_relocs)) | ||||
| 1904 | goto error_return; | ||||
| 1905 | if (elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hdr2 | ||||
| 1906 | && (!elf_link_read_relocs_from_section | ||||
| 1907 | (abfd, o, | ||||
| 1908 | elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hdr2, | ||||
| 1909 | ((bfd_byte *) external_relocs) + rel_hdr->sh_size, | ||||
| 1910 | internal_relocs + (NUM_SHDR_ENTRIES (rel_hdr)((rel_hdr)->sh_size / (rel_hdr)->sh_entsize) | ||||
| 1911 | * bed->s->int_rels_per_ext_rel)))) | ||||
| 1912 | goto error_return; | ||||
| 1913 | |||||
| 1914 | /* Cache the results for next time, if we can. */ | ||||
| 1915 | if (keep_memory) | ||||
| 1916 | elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->relocs = internal_relocs; | ||||
| 1917 | |||||
| 1918 | if (alloc1 != NULL((void*)0)) | ||||
| 1919 | free (alloc1); | ||||
| 1920 | |||||
| 1921 | /* Don't free alloc2, since if it was allocated we are passing it | ||||
| 1922 | back (under the name of internal_relocs). */ | ||||
| 1923 | |||||
| 1924 | return internal_relocs; | ||||
| 1925 | |||||
| 1926 | error_return: | ||||
| 1927 | if (alloc1 != NULL((void*)0)) | ||||
| 1928 | free (alloc1); | ||||
| 1929 | if (alloc2 != NULL((void*)0)) | ||||
| 1930 | free (alloc2); | ||||
| 1931 | return NULL((void*)0); | ||||
| 1932 | } | ||||
| 1933 | |||||
| 1934 | /* Compute the size of, and allocate space for, REL_HDR which is the | ||||
| 1935 | section header for a section containing relocations for O. */ | ||||
| 1936 | |||||
| 1937 | bfd_boolean | ||||
| 1938 | _bfd_elf_link_size_reloc_section (bfd *abfd, | ||||
| 1939 | Elf_Internal_Shdr *rel_hdr, | ||||
| 1940 | asection *o) | ||||
| 1941 | { | ||||
| 1942 | bfd_size_type reloc_count; | ||||
| 1943 | bfd_size_type num_rel_hashes; | ||||
| 1944 | |||||
| 1945 | /* Figure out how many relocations there will be. */ | ||||
| 1946 | if (rel_hdr == &elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hdr) | ||||
| 1947 | reloc_count = elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_count; | ||||
| 1948 | else | ||||
| 1949 | reloc_count = elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_count2; | ||||
| 1950 | |||||
| 1951 | num_rel_hashes = o->reloc_count; | ||||
| 1952 | if (num_rel_hashes < reloc_count) | ||||
| 1953 | num_rel_hashes = reloc_count; | ||||
| 1954 | |||||
| 1955 | /* That allows us to calculate the size of the section. */ | ||||
| 1956 | rel_hdr->sh_size = rel_hdr->sh_entsize * reloc_count; | ||||
| 1957 | |||||
| 1958 | /* The contents field must last into write_object_contents, so we | ||||
| 1959 | allocate it with bfd_alloc rather than malloc. Also since we | ||||
| 1960 | cannot be sure that the contents will actually be filled in, | ||||
| 1961 | we zero the allocated space. */ | ||||
| 1962 | rel_hdr->contents = bfd_zalloc (abfd, rel_hdr->sh_size); | ||||
| 1963 | if (rel_hdr->contents == NULL((void*)0) && rel_hdr->sh_size != 0) | ||||
| 1964 | return FALSE0; | ||||
| 1965 | |||||
| 1966 | /* We only allocate one set of hash entries, so we only do it the | ||||
| 1967 | first time we are called. */ | ||||
| 1968 | if (elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hashes == NULL((void*)0) | ||||
| 1969 | && num_rel_hashes) | ||||
| 1970 | { | ||||
| 1971 | struct elf_link_hash_entry **p; | ||||
| 1972 | |||||
| 1973 | p = bfd_zmalloc (num_rel_hashes * sizeof (struct elf_link_hash_entry *)); | ||||
| 1974 | if (p == NULL((void*)0)) | ||||
| 1975 | return FALSE0; | ||||
| 1976 | |||||
| 1977 | elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hashes = p; | ||||
| 1978 | } | ||||
| 1979 | |||||
| 1980 | return TRUE1; | ||||
| 1981 | } | ||||
| 1982 | |||||
| 1983 | /* Copy the relocations indicated by the INTERNAL_RELOCS (which | ||||
| 1984 | originated from the section given by INPUT_REL_HDR) to the | ||||
| 1985 | OUTPUT_BFD. */ | ||||
| 1986 | |||||
| 1987 | bfd_boolean | ||||
| 1988 | _bfd_elf_link_output_relocs (bfd *output_bfd, | ||||
| 1989 | asection *input_section, | ||||
| 1990 | Elf_Internal_Shdr *input_rel_hdr, | ||||
| 1991 | Elf_Internal_Rela *internal_relocs) | ||||
| 1992 | { | ||||
| 1993 | Elf_Internal_Rela *irela; | ||||
| 1994 | Elf_Internal_Rela *irelaend; | ||||
| 1995 | bfd_byte *erel; | ||||
| 1996 | Elf_Internal_Shdr *output_rel_hdr; | ||||
| 1997 | asection *output_section; | ||||
| 1998 | unsigned int *rel_countp = NULL((void*)0); | ||||
| 1999 | const struct elf_backend_data *bed; | ||||
| 2000 | void (*swap_out) (bfd *, const Elf_Internal_Rela *, bfd_byte *); | ||||
| 2001 | |||||
| 2002 | output_section = input_section->output_section; | ||||
| 2003 | output_rel_hdr = NULL((void*)0); | ||||
| 2004 | |||||
| 2005 | if (elf_section_data (output_section)((struct bfd_elf_section_data*)output_section->used_by_bfd )->rel_hdr.sh_entsize | ||||
| 2006 | == input_rel_hdr->sh_entsize) | ||||
| 2007 | { | ||||
| 2008 | output_rel_hdr = &elf_section_data (output_section)((struct bfd_elf_section_data*)output_section->used_by_bfd )->rel_hdr; | ||||
| 2009 | rel_countp = &elf_section_data (output_section)((struct bfd_elf_section_data*)output_section->used_by_bfd )->rel_count; | ||||
| 2010 | } | ||||
| 2011 | else if (elf_section_data (output_section)((struct bfd_elf_section_data*)output_section->used_by_bfd )->rel_hdr2 | ||||
| 2012 | && (elf_section_data (output_section)((struct bfd_elf_section_data*)output_section->used_by_bfd )->rel_hdr2->sh_entsize | ||||
| 2013 | == input_rel_hdr->sh_entsize)) | ||||
| 2014 | { | ||||
| 2015 | output_rel_hdr = elf_section_data (output_section)((struct bfd_elf_section_data*)output_section->used_by_bfd )->rel_hdr2; | ||||
| 2016 | rel_countp = &elf_section_data (output_section)((struct bfd_elf_section_data*)output_section->used_by_bfd )->rel_count2; | ||||
| 2017 | } | ||||
| 2018 | else | ||||
| 2019 | { | ||||
| 2020 | (*_bfd_error_handler) | ||||
| 2021 | (_("%s: relocation size mismatch in %s section %s")("%s: relocation size mismatch in %s section %s"), | ||||
| 2022 | bfd_get_filename (output_bfd)((char *) (output_bfd)->filename), | ||||
| 2023 | bfd_archive_filename (input_section->owner), | ||||
| 2024 | input_section->name); | ||||
| 2025 | bfd_set_error (bfd_error_wrong_object_format); | ||||
| 2026 | return FALSE0; | ||||
| 2027 | } | ||||
| 2028 | |||||
| 2029 | bed = get_elf_backend_data (output_bfd)((const struct elf_backend_data *) (output_bfd)->xvec-> backend_data); | ||||
| 2030 | if (input_rel_hdr->sh_entsize == bed->s->sizeof_rel) | ||||
| 2031 | swap_out = bed->s->swap_reloc_out; | ||||
| 2032 | else if (input_rel_hdr->sh_entsize == bed->s->sizeof_rela) | ||||
| 2033 | swap_out = bed->s->swap_reloca_out; | ||||
| 2034 | else | ||||
| 2035 | abort ()_bfd_abort ("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c", 2035 , __PRETTY_FUNCTION__); | ||||
| 2036 | |||||
| 2037 | erel = output_rel_hdr->contents; | ||||
| 2038 | erel += *rel_countp * input_rel_hdr->sh_entsize; | ||||
| 2039 | irela = internal_relocs; | ||||
| 2040 | irelaend = irela + (NUM_SHDR_ENTRIES (input_rel_hdr)((input_rel_hdr)->sh_size / (input_rel_hdr)->sh_entsize ) | ||||
| 2041 | * bed->s->int_rels_per_ext_rel); | ||||
| 2042 | while (irela < irelaend) | ||||
| 2043 | { | ||||
| 2044 | (*swap_out) (output_bfd, irela, erel); | ||||
| 2045 | irela += bed->s->int_rels_per_ext_rel; | ||||
| 2046 | erel += input_rel_hdr->sh_entsize; | ||||
| 2047 | } | ||||
| 2048 | |||||
| 2049 | /* Bump the counter, so that we know where to add the next set of | ||||
| 2050 | relocations. */ | ||||
| 2051 | *rel_countp += NUM_SHDR_ENTRIES (input_rel_hdr)((input_rel_hdr)->sh_size / (input_rel_hdr)->sh_entsize ); | ||||
| 2052 | |||||
| 2053 | return TRUE1; | ||||
| 2054 | } | ||||
| 2055 | |||||
| 2056 | /* Fix up the flags for a symbol. This handles various cases which | ||||
| 2057 | can only be fixed after all the input files are seen. This is | ||||
| 2058 | currently called by both adjust_dynamic_symbol and | ||||
| 2059 | assign_sym_version, which is unnecessary but perhaps more robust in | ||||
| 2060 | the face of future changes. */ | ||||
| 2061 | |||||
| 2062 | bfd_boolean | ||||
| 2063 | _bfd_elf_fix_symbol_flags (struct elf_link_hash_entry *h, | ||||
| 2064 | struct elf_info_failed *eif) | ||||
| 2065 | { | ||||
| 2066 | /* If this symbol was mentioned in a non-ELF file, try to set | ||||
| 2067 | DEF_REGULAR and REF_REGULAR correctly. This is the only way to | ||||
| 2068 | permit a non-ELF file to correctly refer to a symbol defined in | ||||
| 2069 | an ELF dynamic object. */ | ||||
| 2070 | if ((h->elf_link_hash_flags & ELF_LINK_NON_ELF0400) != 0) | ||||
| 2071 | { | ||||
| 2072 | while (h->root.type == bfd_link_hash_indirect) | ||||
| 2073 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | ||||
| 2074 | |||||
| 2075 | if (h->root.type != bfd_link_hash_defined | ||||
| 2076 | && h->root.type != bfd_link_hash_defweak) | ||||
| 2077 | h->elf_link_hash_flags |= (ELF_LINK_HASH_REF_REGULAR01 | ||||
| 2078 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK020); | ||||
| 2079 | else | ||||
| 2080 | { | ||||
| 2081 | if (h->root.u.def.section->owner != NULL((void*)0) | ||||
| 2082 | && (bfd_get_flavour (h->root.u.def.section->owner)((h->root.u.def.section->owner)->xvec->flavour) | ||||
| 2083 | == bfd_target_elf_flavour)) | ||||
| 2084 | h->elf_link_hash_flags |= (ELF_LINK_HASH_REF_REGULAR01 | ||||
| 2085 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK020); | ||||
| 2086 | else | ||||
| 2087 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR02; | ||||
| 2088 | } | ||||
| 2089 | |||||
| 2090 | if (h->dynindx == -1 | ||||
| 2091 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC010) != 0 | ||||
| 2092 | || (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC04) != 0)) | ||||
| 2093 | { | ||||
| 2094 | if (! bfd_elf_link_record_dynamic_symbol (eif->info, h)) | ||||
| 2095 | { | ||||
| 2096 | eif->failed = TRUE1; | ||||
| 2097 | return FALSE0; | ||||
| 2098 | } | ||||
| 2099 | } | ||||
| 2100 | } | ||||
| 2101 | else | ||||
| 2102 | { | ||||
| 2103 | /* Unfortunately, ELF_LINK_NON_ELF is only correct if the symbol | ||||
| 2104 | was first seen in a non-ELF file. Fortunately, if the symbol | ||||
| 2105 | was first seen in an ELF file, we're probably OK unless the | ||||
| 2106 | symbol was defined in a non-ELF file. Catch that case here. | ||||
| 2107 | FIXME: We're still in trouble if the symbol was first seen in | ||||
| 2108 | a dynamic object, and then later in a non-ELF regular object. */ | ||||
| 2109 | if ((h->root.type == bfd_link_hash_defined | ||||
| 2110 | || h->root.type == bfd_link_hash_defweak) | ||||
| 2111 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR02) == 0 | ||||
| 2112 | && (h->root.u.def.section->owner != NULL((void*)0) | ||||
| 2113 | ? (bfd_get_flavour (h->root.u.def.section->owner)((h->root.u.def.section->owner)->xvec->flavour) | ||||
| 2114 | != bfd_target_elf_flavour) | ||||
| 2115 | : (bfd_is_abs_section (h->root.u.def.section)((h->root.u.def.section) == ((asection *) &bfd_abs_section )) | ||||
| 2116 | && (h->elf_link_hash_flags | ||||
| 2117 | & ELF_LINK_HASH_DEF_DYNAMIC010) == 0))) | ||||
| 2118 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR02; | ||||
| 2119 | } | ||||
| 2120 | |||||
| 2121 | /* If this is a final link, and the symbol was defined as a common | ||||
| 2122 | symbol in a regular object file, and there was no definition in | ||||
| 2123 | any dynamic object, then the linker will have allocated space for | ||||
| 2124 | the symbol in a common section but the ELF_LINK_HASH_DEF_REGULAR | ||||
| 2125 | flag will not have been set. */ | ||||
| 2126 | if (h->root.type == bfd_link_hash_defined | ||||
| 2127 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR02) == 0 | ||||
| 2128 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR01) != 0 | ||||
| 2129 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC010) == 0 | ||||
| 2130 | && (h->root.u.def.section->owner->flags & DYNAMIC0x40) == 0) | ||||
| 2131 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR02; | ||||
| 2132 | |||||
| 2133 | /* If -Bsymbolic was used (which means to bind references to global | ||||
| 2134 | symbols to the definition within the shared object), and this | ||||
| 2135 | symbol was defined in a regular object, then it actually doesn't | ||||
| 2136 | need a PLT entry. Likewise, if the symbol has non-default | ||||
| 2137 | visibility. If the symbol has hidden or internal visibility, we | ||||
| 2138 | will force it local. */ | ||||
| 2139 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT0200) != 0 | ||||
| 2140 | && eif->info->shared | ||||
| 2141 | && is_elf_hash_table (eif->info->hash)(((struct bfd_link_hash_table *) (eif->info->hash))-> type == bfd_link_elf_hash_table) | ||||
| 2142 | && (eif->info->symbolic || eif->info->static_link | ||||
| 2143 | || ELF_ST_VISIBILITY (h->other)((h->other) & 0x3) != STV_DEFAULT0) | ||||
| 2144 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR02) != 0) | ||||
| 2145 | { | ||||
| 2146 | const struct elf_backend_data *bed; | ||||
| 2147 | bfd_boolean force_local; | ||||
| 2148 | |||||
| 2149 | bed = get_elf_backend_data (elf_hash_table (eif->info)->dynobj)((const struct elf_backend_data *) (((struct elf_link_hash_table *) ((eif->info)->hash))->dynobj)->xvec->backend_data ); | ||||
| 2150 | |||||
| 2151 | force_local = (ELF_ST_VISIBILITY (h->other)((h->other) & 0x3) == STV_INTERNAL1 | ||||
| 2152 | || ELF_ST_VISIBILITY (h->other)((h->other) & 0x3) == STV_HIDDEN2); | ||||
| 2153 | (*bed->elf_backend_hide_symbol) (eif->info, h, force_local); | ||||
| 2154 | } | ||||
| 2155 | |||||
| 2156 | /* If a weak undefined symbol has non-default visibility, we also | ||||
| 2157 | hide it from the dynamic linker. */ | ||||
| 2158 | if (ELF_ST_VISIBILITY (h->other)((h->other) & 0x3) != STV_DEFAULT0 | ||||
| 2159 | && h->root.type == bfd_link_hash_undefweak) | ||||
| 2160 | { | ||||
| 2161 | const struct elf_backend_data *bed; | ||||
| 2162 | bed = get_elf_backend_data (elf_hash_table (eif->info)->dynobj)((const struct elf_backend_data *) (((struct elf_link_hash_table *) ((eif->info)->hash))->dynobj)->xvec->backend_data ); | ||||
| 2163 | (*bed->elf_backend_hide_symbol) (eif->info, h, TRUE1); | ||||
| 2164 | } | ||||
| 2165 | |||||
| 2166 | /* If this is a weak defined symbol in a dynamic object, and we know | ||||
| 2167 | the real definition in the dynamic object, copy interesting flags | ||||
| 2168 | over to the real definition. */ | ||||
| 2169 | if (h->weakdef != NULL((void*)0)) | ||||
| 2170 | { | ||||
| 2171 | struct elf_link_hash_entry *weakdef; | ||||
| 2172 | |||||
| 2173 | weakdef = h->weakdef; | ||||
| 2174 | if (h->root.type == bfd_link_hash_indirect) | ||||
| 2175 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | ||||
| 2176 | |||||
| 2177 | BFD_ASSERT (h->root.type == bfd_link_hash_defined{ if (!(h->root.type == bfd_link_hash_defined || h->root .type == bfd_link_hash_defweak)) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,2178); } | ||||
| 2178 | || h->root.type == bfd_link_hash_defweak){ if (!(h->root.type == bfd_link_hash_defined || h->root .type == bfd_link_hash_defweak)) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,2178); }; | ||||
| 2179 | BFD_ASSERT (weakdef->root.type == bfd_link_hash_defined{ if (!(weakdef->root.type == bfd_link_hash_defined || weakdef ->root.type == bfd_link_hash_defweak)) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,2180); } | ||||
| 2180 | || weakdef->root.type == bfd_link_hash_defweak){ if (!(weakdef->root.type == bfd_link_hash_defined || weakdef ->root.type == bfd_link_hash_defweak)) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,2180); }; | ||||
| 2181 | BFD_ASSERT (weakdef->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC){ if (!(weakdef->elf_link_hash_flags & 010)) bfd_assert ("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c",2181); }; | ||||
| 2182 | |||||
| 2183 | /* If the real definition is defined by a regular object file, | ||||
| 2184 | don't do anything special. See the longer description in | ||||
| 2185 | _bfd_elf_adjust_dynamic_symbol, below. */ | ||||
| 2186 | if ((weakdef->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR02) != 0) | ||||
| 2187 | h->weakdef = NULL((void*)0); | ||||
| 2188 | else | ||||
| 2189 | { | ||||
| 2190 | const struct elf_backend_data *bed; | ||||
| 2191 | |||||
| 2192 | bed = get_elf_backend_data (elf_hash_table (eif->info)->dynobj)((const struct elf_backend_data *) (((struct elf_link_hash_table *) ((eif->info)->hash))->dynobj)->xvec->backend_data ); | ||||
| 2193 | (*bed->elf_backend_copy_indirect_symbol) (bed, weakdef, h); | ||||
| 2194 | } | ||||
| 2195 | } | ||||
| 2196 | |||||
| 2197 | return TRUE1; | ||||
| 2198 | } | ||||
| 2199 | |||||
| 2200 | /* Make the backend pick a good value for a dynamic symbol. This is | ||||
| 2201 | called via elf_link_hash_traverse, and also calls itself | ||||
| 2202 | recursively. */ | ||||
| 2203 | |||||
| 2204 | bfd_boolean | ||||
| 2205 | _bfd_elf_adjust_dynamic_symbol (struct elf_link_hash_entry *h, void *data) | ||||
| 2206 | { | ||||
| 2207 | struct elf_info_failed *eif = data; | ||||
| 2208 | bfd *dynobj; | ||||
| 2209 | const struct elf_backend_data *bed; | ||||
| 2210 | |||||
| 2211 | if (! is_elf_hash_table (eif->info->hash)(((struct bfd_link_hash_table *) (eif->info->hash))-> type == bfd_link_elf_hash_table)) | ||||
| 2212 | return FALSE0; | ||||
| 2213 | |||||
| 2214 | if (h->root.type == bfd_link_hash_warning) | ||||
| 2215 | { | ||||
| 2216 | h->plt = elf_hash_table (eif->info)((struct elf_link_hash_table *) ((eif->info)->hash))->init_offset; | ||||
| 2217 | h->got = elf_hash_table (eif->info)((struct elf_link_hash_table *) ((eif->info)->hash))->init_offset; | ||||
| 2218 | |||||
| 2219 | /* When warning symbols are created, they **replace** the "real" | ||||
| 2220 | entry in the hash table, thus we never get to see the real | ||||
| 2221 | symbol in a hash traversal. So look at it now. */ | ||||
| 2222 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | ||||
| 2223 | } | ||||
| 2224 | |||||
| 2225 | /* Ignore indirect symbols. These are added by the versioning code. */ | ||||
| 2226 | if (h->root.type == bfd_link_hash_indirect) | ||||
| 2227 | return TRUE1; | ||||
| 2228 | |||||
| 2229 | /* Fix the symbol flags. */ | ||||
| 2230 | if (! _bfd_elf_fix_symbol_flags (h, eif)) | ||||
| 2231 | return FALSE0; | ||||
| 2232 | |||||
| 2233 | /* If this symbol does not require a PLT entry, and it is not | ||||
| 2234 | defined by a dynamic object, or is not referenced by a regular | ||||
| 2235 | object, ignore it. We do have to handle a weak defined symbol, | ||||
| 2236 | even if no regular object refers to it, if we decided to add it | ||||
| 2237 | to the dynamic symbol table. FIXME: Do we normally need to worry | ||||
| 2238 | about symbols which are defined by one dynamic object and | ||||
| 2239 | referenced by another one? */ | ||||
| 2240 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT0200) == 0 | ||||
| 2241 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR02) != 0 | ||||
| 2242 | || (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC010) == 0 | ||||
| 2243 | || ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR01) == 0 | ||||
| 2244 | && (h->weakdef == NULL((void*)0) || h->weakdef->dynindx == -1)))) | ||||
| 2245 | { | ||||
| 2246 | h->plt = elf_hash_table (eif->info)((struct elf_link_hash_table *) ((eif->info)->hash))->init_offset; | ||||
| 2247 | return TRUE1; | ||||
| 2248 | } | ||||
| 2249 | |||||
| 2250 | /* If we've already adjusted this symbol, don't do it again. This | ||||
| 2251 | can happen via a recursive call. */ | ||||
| 2252 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED040) != 0) | ||||
| 2253 | return TRUE1; | ||||
| 2254 | |||||
| 2255 | /* Don't look at this symbol again. Note that we must set this | ||||
| 2256 | after checking the above conditions, because we may look at a | ||||
| 2257 | symbol once, decide not to do anything, and then get called | ||||
| 2258 | recursively later after REF_REGULAR is set below. */ | ||||
| 2259 | h->elf_link_hash_flags |= ELF_LINK_HASH_DYNAMIC_ADJUSTED040; | ||||
| 2260 | |||||
| 2261 | /* If this is a weak definition, and we know a real definition, and | ||||
| 2262 | the real symbol is not itself defined by a regular object file, | ||||
| 2263 | then get a good value for the real definition. We handle the | ||||
| 2264 | real symbol first, for the convenience of the backend routine. | ||||
| 2265 | |||||
| 2266 | Note that there is a confusing case here. If the real definition | ||||
| 2267 | is defined by a regular object file, we don't get the real symbol | ||||
| 2268 | from the dynamic object, but we do get the weak symbol. If the | ||||
| 2269 | processor backend uses a COPY reloc, then if some routine in the | ||||
| 2270 | dynamic object changes the real symbol, we will not see that | ||||
| 2271 | change in the corresponding weak symbol. This is the way other | ||||
| 2272 | ELF linkers work as well, and seems to be a result of the shared | ||||
| 2273 | library model. | ||||
| 2274 | |||||
| 2275 | I will clarify this issue. Most SVR4 shared libraries define the | ||||
| 2276 | variable _timezone and define timezone as a weak synonym. The | ||||
| 2277 | tzset call changes _timezone. If you write | ||||
| 2278 | extern int timezone; | ||||
| 2279 | int _timezone = 5; | ||||
| 2280 | int main () { tzset (); printf ("%d %d\n", timezone, _timezone); } | ||||
| 2281 | you might expect that, since timezone is a synonym for _timezone, | ||||
| 2282 | the same number will print both times. However, if the processor | ||||
| 2283 | backend uses a COPY reloc, then actually timezone will be copied | ||||
| 2284 | into your process image, and, since you define _timezone | ||||
| 2285 | yourself, _timezone will not. Thus timezone and _timezone will | ||||
| 2286 | wind up at different memory locations. The tzset call will set | ||||
| 2287 | _timezone, leaving timezone unchanged. */ | ||||
| 2288 | |||||
| 2289 | if (h->weakdef != NULL((void*)0)) | ||||
| 2290 | { | ||||
| 2291 | /* If we get to this point, we know there is an implicit | ||||
| 2292 | reference by a regular object file via the weak symbol H. | ||||
| 2293 | FIXME: Is this really true? What if the traversal finds | ||||
| 2294 | H->WEAKDEF before it finds H? */ | ||||
| 2295 | h->weakdef->elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR01; | ||||
| 2296 | |||||
| 2297 | if (! _bfd_elf_adjust_dynamic_symbol (h->weakdef, eif)) | ||||
| 2298 | return FALSE0; | ||||
| 2299 | } | ||||
| 2300 | |||||
| 2301 | /* If a symbol has no type and no size and does not require a PLT | ||||
| 2302 | entry, then we are probably about to do the wrong thing here: we | ||||
| 2303 | are probably going to create a COPY reloc for an empty object. | ||||
| 2304 | This case can arise when a shared object is built with assembly | ||||
| 2305 | code, and the assembly code fails to set the symbol type. */ | ||||
| 2306 | if (h->size == 0 | ||||
| 2307 | && h->type == STT_NOTYPE0 | ||||
| 2308 | && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT0200) == 0) | ||||
| 2309 | (*_bfd_error_handler) | ||||
| 2310 | (_("warning: type and size of dynamic symbol `%s' are not defined")("warning: type and size of dynamic symbol `%s' are not defined" ), | ||||
| 2311 | h->root.root.string); | ||||
| 2312 | |||||
| 2313 | dynobj = elf_hash_table (eif->info)((struct elf_link_hash_table *) ((eif->info)->hash))->dynobj; | ||||
| 2314 | bed = get_elf_backend_data (dynobj)((const struct elf_backend_data *) (dynobj)->xvec->backend_data ); | ||||
| 2315 | if (! (*bed->elf_backend_adjust_dynamic_symbol) (eif->info, h)) | ||||
| 2316 | { | ||||
| 2317 | eif->failed = TRUE1; | ||||
| 2318 | return FALSE0; | ||||
| 2319 | } | ||||
| 2320 | |||||
| 2321 | return TRUE1; | ||||
| 2322 | } | ||||
| 2323 | |||||
| 2324 | /* Adjust all external symbols pointing into SEC_MERGE sections | ||||
| 2325 | to reflect the object merging within the sections. */ | ||||
| 2326 | |||||
| 2327 | bfd_boolean | ||||
| 2328 | _bfd_elf_link_sec_merge_syms (struct elf_link_hash_entry *h, void *data) | ||||
| 2329 | { | ||||
| 2330 | asection *sec; | ||||
| 2331 | |||||
| 2332 | if (h->root.type == bfd_link_hash_warning) | ||||
| 2333 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | ||||
| 2334 | |||||
| 2335 | if ((h->root.type == bfd_link_hash_defined | ||||
| 2336 | || h->root.type == bfd_link_hash_defweak) | ||||
| 2337 | && ((sec = h->root.u.def.section)->flags & SEC_MERGE0x20000000) | ||||
| 2338 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE2) | ||||
| 2339 | { | ||||
| 2340 | bfd *output_bfd = data; | ||||
| 2341 | |||||
| 2342 | h->root.u.def.value = | ||||
| 2343 | _bfd_merged_section_offset (output_bfd, | ||||
| 2344 | &h->root.u.def.section, | ||||
| 2345 | elf_section_data (sec)((struct bfd_elf_section_data*)sec->used_by_bfd)->sec_info, | ||||
| 2346 | h->root.u.def.value, 0); | ||||
| 2347 | } | ||||
| 2348 | |||||
| 2349 | return TRUE1; | ||||
| 2350 | } | ||||
| 2351 | |||||
| 2352 | /* Returns false if the symbol referred to by H should be considered | ||||
| 2353 | to resolve local to the current module, and true if it should be | ||||
| 2354 | considered to bind dynamically. */ | ||||
| 2355 | |||||
| 2356 | bfd_boolean | ||||
| 2357 | _bfd_elf_dynamic_symbol_p (struct elf_link_hash_entry *h, | ||||
| 2358 | struct bfd_link_info *info, | ||||
| 2359 | bfd_boolean ignore_protected) | ||||
| 2360 | { | ||||
| 2361 | bfd_boolean binding_stays_local_p; | ||||
| 2362 | |||||
| 2363 | if (h == NULL((void*)0)) | ||||
| 2364 | return FALSE0; | ||||
| 2365 | |||||
| 2366 | while (h->root.type == bfd_link_hash_indirect | ||||
| 2367 | || h->root.type == bfd_link_hash_warning) | ||||
| 2368 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | ||||
| 2369 | |||||
| 2370 | /* If it was forced local, then clearly it's not dynamic. */ | ||||
| 2371 | if (h->dynindx == -1) | ||||
| 2372 | return FALSE0; | ||||
| 2373 | if (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL02000) | ||||
| 2374 | return FALSE0; | ||||
| 2375 | |||||
| 2376 | /* Identify the cases where name binding rules say that a | ||||
| 2377 | visible symbol resolves locally. */ | ||||
| 2378 | binding_stays_local_p = info->executable || info->symbolic; | ||||
| 2379 | |||||
| 2380 | switch (ELF_ST_VISIBILITY (h->other)((h->other) & 0x3)) | ||||
| 2381 | { | ||||
| 2382 | case STV_INTERNAL1: | ||||
| 2383 | case STV_HIDDEN2: | ||||
| 2384 | return FALSE0; | ||||
| 2385 | |||||
| 2386 | case STV_PROTECTED3: | ||||
| 2387 | /* Proper resolution for function pointer equality may require | ||||
| 2388 | that these symbols perhaps be resolved dynamically, even though | ||||
| 2389 | we should be resolving them to the current module. */ | ||||
| 2390 | if (!ignore_protected) | ||||
| 2391 | binding_stays_local_p = TRUE1; | ||||
| 2392 | break; | ||||
| 2393 | |||||
| 2394 | default: | ||||
| 2395 | break; | ||||
| 2396 | } | ||||
| 2397 | |||||
| 2398 | /* If it isn't defined locally, then clearly it's dynamic. */ | ||||
| 2399 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR02) == 0) | ||||
| 2400 | return TRUE1; | ||||
| 2401 | |||||
| 2402 | /* Otherwise, the symbol is dynamic if binding rules don't tell | ||||
| 2403 | us that it remains local. */ | ||||
| 2404 | return !binding_stays_local_p; | ||||
| 2405 | } | ||||
| 2406 | |||||
| 2407 | /* Return true if the symbol referred to by H should be considered | ||||
| 2408 | to resolve local to the current module, and false otherwise. Differs | ||||
| 2409 | from (the inverse of) _bfd_elf_dynamic_symbol_p in the treatment of | ||||
| 2410 | undefined symbols and weak symbols. */ | ||||
| 2411 | |||||
| 2412 | bfd_boolean | ||||
| 2413 | _bfd_elf_symbol_refs_local_p (struct elf_link_hash_entry *h, | ||||
| 2414 | struct bfd_link_info *info, | ||||
| 2415 | bfd_boolean local_protected) | ||||
| 2416 | { | ||||
| 2417 | /* If it's a local sym, of course we resolve locally. */ | ||||
| 2418 | if (h == NULL((void*)0)) | ||||
| 2419 | return TRUE1; | ||||
| 2420 | |||||
| 2421 | /* If we don't have a definition in a regular file, then we can't | ||||
| 2422 | resolve locally. The sym is either undefined or dynamic. */ | ||||
| 2423 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR02) == 0) | ||||
| 2424 | return FALSE0; | ||||
| 2425 | |||||
| 2426 | /* Forced local symbols resolve locally. */ | ||||
| 2427 | if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL02000) != 0) | ||||
| 2428 | return TRUE1; | ||||
| 2429 | |||||
| 2430 | /* As do non-dynamic symbols. */ | ||||
| 2431 | if (h->dynindx == -1) | ||||
| 2432 | return TRUE1; | ||||
| 2433 | |||||
| 2434 | /* At this point, we know the symbol is defined and dynamic. In an | ||||
| 2435 | executable it must resolve locally, likewise when building symbolic | ||||
| 2436 | shared libraries. */ | ||||
| 2437 | if (info->executable || info->symbolic) | ||||
| 2438 | return TRUE1; | ||||
| 2439 | |||||
| 2440 | /* Now deal with defined dynamic symbols in shared libraries. Ones | ||||
| 2441 | with default visibility might not resolve locally. */ | ||||
| 2442 | if (ELF_ST_VISIBILITY (h->other)((h->other) & 0x3) == STV_DEFAULT0) | ||||
| 2443 | return FALSE0; | ||||
| 2444 | |||||
| 2445 | /* However, STV_HIDDEN or STV_INTERNAL ones must be local. */ | ||||
| 2446 | if (ELF_ST_VISIBILITY (h->other)((h->other) & 0x3) != STV_PROTECTED3) | ||||
| 2447 | return TRUE1; | ||||
| 2448 | |||||
| 2449 | /* Function pointer equality tests may require that STV_PROTECTED | ||||
| 2450 | symbols be treated as dynamic symbols, even when we know that the | ||||
| 2451 | dynamic linker will resolve them locally. */ | ||||
| 2452 | return local_protected; | ||||
| 2453 | } | ||||
| 2454 | |||||
| 2455 | /* Caches some TLS segment info, and ensures that the TLS segment vma is | ||||
| 2456 | aligned. Returns the first TLS output section. */ | ||||
| 2457 | |||||
| 2458 | struct bfd_section * | ||||
| 2459 | _bfd_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) | ||||
| 2460 | { | ||||
| 2461 | struct bfd_section *sec, *tls; | ||||
| 2462 | unsigned int align = 0; | ||||
| 2463 | |||||
| 2464 | for (sec = obfd->sections; sec != NULL((void*)0); sec = sec->next) | ||||
| 2465 | if ((sec->flags & SEC_THREAD_LOCAL0x1000) != 0) | ||||
| 2466 | break; | ||||
| 2467 | tls = sec; | ||||
| 2468 | |||||
| 2469 | for (; sec != NULL((void*)0) && (sec->flags & SEC_THREAD_LOCAL0x1000) != 0; sec = sec->next) | ||||
| 2470 | if (sec->alignment_power > align) | ||||
| 2471 | align = sec->alignment_power; | ||||
| 2472 | |||||
| 2473 | elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->tls_sec = tls; | ||||
| 2474 | |||||
| 2475 | /* Ensure the alignment of the first section is the largest alignment, | ||||
| 2476 | so that the tls segment starts aligned. */ | ||||
| 2477 | if (tls != NULL((void*)0)) | ||||
| 2478 | tls->alignment_power = align; | ||||
| 2479 | |||||
| 2480 | return tls; | ||||
| 2481 | } | ||||
| 2482 | |||||
| 2483 | /* Return TRUE iff this is a non-common, definition of a non-function symbol. */ | ||||
| 2484 | static bfd_boolean | ||||
| 2485 | is_global_data_symbol_definition (bfd *abfd ATTRIBUTE_UNUSED__attribute__ ((__unused__)), | ||||
| 2486 | Elf_Internal_Sym *sym) | ||||
| 2487 | { | ||||
| 2488 | /* Local symbols do not count, but target specific ones might. */ | ||||
| 2489 | if (ELF_ST_BIND (sym->st_info)(((unsigned int)(sym->st_info)) >> 4) != STB_GLOBAL1 | ||||
| 2490 | && ELF_ST_BIND (sym->st_info)(((unsigned int)(sym->st_info)) >> 4) < STB_LOOS10) | ||||
| 2491 | return FALSE0; | ||||
| 2492 | |||||
| 2493 | /* Function symbols do not count. */ | ||||
| 2494 | if (ELF_ST_TYPE (sym->st_info)((sym->st_info) & 0xF) == STT_FUNC2) | ||||
| 2495 | return FALSE0; | ||||
| 2496 | |||||
| 2497 | /* If the section is undefined, then so is the symbol. */ | ||||
| 2498 | if (sym->st_shndx == SHN_UNDEF0) | ||||
| 2499 | return FALSE0; | ||||
| 2500 | |||||
| 2501 | /* If the symbol is defined in the common section, then | ||||
| 2502 | it is a common definition and so does not count. */ | ||||
| 2503 | if (sym->st_shndx == SHN_COMMON0xFFF2) | ||||
| 2504 | return FALSE0; | ||||
| 2505 | |||||
| 2506 | /* If the symbol is in a target specific section then we | ||||
| 2507 | must rely upon the backend to tell us what it is. */ | ||||
| 2508 | if (sym->st_shndx >= SHN_LORESERVE0xFF00 && sym->st_shndx < SHN_ABS0xFFF1) | ||||
| 2509 | /* FIXME - this function is not coded yet: | ||||
| 2510 | |||||
| 2511 | return _bfd_is_global_symbol_definition (abfd, sym); | ||||
| 2512 | |||||
| 2513 | Instead for now assume that the definition is not global, | ||||
| 2514 | Even if this is wrong, at least the linker will behave | ||||
| 2515 | in the same way that it used to do. */ | ||||
| 2516 | return FALSE0; | ||||
| 2517 | |||||
| 2518 | return TRUE1; | ||||
| 2519 | } | ||||
| 2520 | |||||
| 2521 | /* Search the symbol table of the archive element of the archive ABFD | ||||
| 2522 | whose archive map contains a mention of SYMDEF, and determine if | ||||
| 2523 | the symbol is defined in this element. */ | ||||
| 2524 | static bfd_boolean | ||||
| 2525 | elf_link_is_defined_archive_symbol (bfd * abfd, carsym * symdef) | ||||
| 2526 | { | ||||
| 2527 | Elf_Internal_Shdr * hdr; | ||||
| 2528 | bfd_size_type symcount; | ||||
| 2529 | bfd_size_type extsymcount; | ||||
| 2530 | bfd_size_type extsymoff; | ||||
| 2531 | Elf_Internal_Sym *isymbuf; | ||||
| 2532 | Elf_Internal_Sym *isym; | ||||
| 2533 | Elf_Internal_Sym *isymend; | ||||
| 2534 | bfd_boolean result; | ||||
| 2535 | |||||
| 2536 | abfd = _bfd_get_elt_at_filepos (abfd, symdef->file_offset); | ||||
| 2537 | if (abfd == NULL((void*)0)) | ||||
| 2538 | return FALSE0; | ||||
| 2539 | |||||
| 2540 | if (! bfd_check_format (abfd, bfd_object)) | ||||
| 2541 | return FALSE0; | ||||
| 2542 | |||||
| 2543 | /* If we have already included the element containing this symbol in the | ||||
| 2544 | link then we do not need to include it again. Just claim that any symbol | ||||
| 2545 | it contains is not a definition, so that our caller will not decide to | ||||
| 2546 | (re)include this element. */ | ||||
| 2547 | if (abfd->archive_pass) | ||||
| 2548 | return FALSE0; | ||||
| 2549 | |||||
| 2550 | /* Select the appropriate symbol table. */ | ||||
| 2551 | if ((abfd->flags & DYNAMIC0x40) == 0 || elf_dynsymtab (abfd)(((abfd) -> tdata.elf_obj_data) -> dynsymtab_section) == 0) | ||||
| 2552 | hdr = &elf_tdata (abfd)((abfd) -> tdata.elf_obj_data)->symtab_hdr; | ||||
| 2553 | else | ||||
| 2554 | hdr = &elf_tdata (abfd)((abfd) -> tdata.elf_obj_data)->dynsymtab_hdr; | ||||
| 2555 | |||||
| 2556 | symcount = hdr->sh_size / get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data )->s->sizeof_sym; | ||||
| 2557 | |||||
| 2558 | /* The sh_info field of the symtab header tells us where the | ||||
| 2559 | external symbols start. We don't care about the local symbols. */ | ||||
| 2560 | if (elf_bad_symtab (abfd)(((abfd) -> tdata.elf_obj_data) -> bad_symtab)) | ||||
| 2561 | { | ||||
| 2562 | extsymcount = symcount; | ||||
| 2563 | extsymoff = 0; | ||||
| 2564 | } | ||||
| 2565 | else | ||||
| 2566 | { | ||||
| 2567 | extsymcount = symcount - hdr->sh_info; | ||||
| 2568 | extsymoff = hdr->sh_info; | ||||
| 2569 | } | ||||
| 2570 | |||||
| 2571 | if (extsymcount == 0) | ||||
| 2572 | return FALSE0; | ||||
| 2573 | |||||
| 2574 | /* Read in the symbol table. */ | ||||
| 2575 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, extsymcount, extsymoff, | ||||
| 2576 | NULL((void*)0), NULL((void*)0), NULL((void*)0)); | ||||
| 2577 | if (isymbuf == NULL((void*)0)) | ||||
| 2578 | return FALSE0; | ||||
| 2579 | |||||
| 2580 | /* Scan the symbol table looking for SYMDEF. */ | ||||
| 2581 | result = FALSE0; | ||||
| 2582 | for (isym = isymbuf, isymend = isymbuf + extsymcount; isym < isymend; isym++) | ||||
| 2583 | { | ||||
| 2584 | const char *name; | ||||
| 2585 | |||||
| 2586 | name = bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | ||||
| 2587 | isym->st_name); | ||||
| 2588 | if (name == NULL((void*)0)) | ||||
| 2589 | break; | ||||
| 2590 | |||||
| 2591 | if (strcmp (name, symdef->name) == 0) | ||||
| 2592 | { | ||||
| 2593 | result = is_global_data_symbol_definition (abfd, isym); | ||||
| 2594 | break; | ||||
| 2595 | } | ||||
| 2596 | } | ||||
| 2597 | |||||
| 2598 | free (isymbuf); | ||||
| 2599 | |||||
| 2600 | return result; | ||||
| 2601 | } | ||||
| 2602 | |||||
| 2603 | /* Add an entry to the .dynamic table. */ | ||||
| 2604 | |||||
| 2605 | bfd_boolean | ||||
| 2606 | _bfd_elf_add_dynamic_entry (struct bfd_link_info *info, | ||||
| 2607 | bfd_vma tag, | ||||
| 2608 | bfd_vma val) | ||||
| 2609 | { | ||||
| 2610 | struct elf_link_hash_table *hash_table; | ||||
| 2611 | const struct elf_backend_data *bed; | ||||
| 2612 | asection *s; | ||||
| 2613 | bfd_size_type newsize; | ||||
| 2614 | bfd_byte *newcontents; | ||||
| 2615 | Elf_Internal_Dyn dyn; | ||||
| 2616 | |||||
| 2617 | hash_table = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash)); | ||||
| 2618 | if (! is_elf_hash_table (hash_table)(((struct bfd_link_hash_table *) (hash_table))->type == bfd_link_elf_hash_table )) | ||||
| 2619 | return FALSE0; | ||||
| 2620 | |||||
| 2621 | bed = get_elf_backend_data (hash_table->dynobj)((const struct elf_backend_data *) (hash_table->dynobj)-> xvec->backend_data); | ||||
| 2622 | s = bfd_get_section_by_name (hash_table->dynobj, ".dynamic"); | ||||
| 2623 | BFD_ASSERT (s != NULL){ if (!(s != ((void*)0))) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,2623); }; | ||||
| 2624 | |||||
| 2625 | newsize = s->_raw_size + bed->s->sizeof_dyn; | ||||
| 2626 | newcontents = bfd_realloc (s->contents, newsize); | ||||
| 2627 | if (newcontents == NULL((void*)0)) | ||||
| 2628 | return FALSE0; | ||||
| 2629 | |||||
| 2630 | dyn.d_tag = tag; | ||||
| 2631 | dyn.d_un.d_val = val; | ||||
| 2632 | bed->s->swap_dyn_out (hash_table->dynobj, &dyn, newcontents + s->_raw_size); | ||||
| 2633 | |||||
| 2634 | s->_raw_size = newsize; | ||||
| 2635 | s->contents = newcontents; | ||||
| 2636 | |||||
| 2637 | return TRUE1; | ||||
| 2638 | } | ||||
| 2639 | |||||
| 2640 | /* Add a DT_NEEDED entry for this dynamic object if DO_IT is true, | ||||
| 2641 | otherwise just check whether one already exists. Returns -1 on error, | ||||
| 2642 | 1 if a DT_NEEDED tag already exists, and 0 on success. */ | ||||
| 2643 | |||||
| 2644 | static int | ||||
| 2645 | elf_add_dt_needed_tag (struct bfd_link_info *info, | ||||
| 2646 | const char *soname, | ||||
| 2647 | bfd_boolean do_it) | ||||
| 2648 | { | ||||
| 2649 | struct elf_link_hash_table *hash_table; | ||||
| 2650 | bfd_size_type oldsize; | ||||
| 2651 | bfd_size_type strindex; | ||||
| 2652 | |||||
| 2653 | hash_table = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash)); | ||||
| 2654 | oldsize = _bfd_elf_strtab_size (hash_table->dynstr); | ||||
| 2655 | strindex = _bfd_elf_strtab_add (hash_table->dynstr, soname, FALSE0); | ||||
| 2656 | if (strindex == (bfd_size_type) -1) | ||||
| 2657 | return -1; | ||||
| 2658 | |||||
| 2659 | if (oldsize == _bfd_elf_strtab_size (hash_table->dynstr)) | ||||
| 2660 | { | ||||
| 2661 | asection *sdyn; | ||||
| 2662 | const struct elf_backend_data *bed; | ||||
| 2663 | bfd_byte *extdyn; | ||||
| 2664 | |||||
| 2665 | bed = get_elf_backend_data (hash_table->dynobj)((const struct elf_backend_data *) (hash_table->dynobj)-> xvec->backend_data); | ||||
| 2666 | sdyn = bfd_get_section_by_name (hash_table->dynobj, ".dynamic"); | ||||
| 2667 | BFD_ASSERT (sdyn != NULL){ if (!(sdyn != ((void*)0))) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,2667); }; | ||||
| 2668 | |||||
| 2669 | for (extdyn = sdyn->contents; | ||||
| 2670 | extdyn < sdyn->contents + sdyn->_raw_size; | ||||
| 2671 | extdyn += bed->s->sizeof_dyn) | ||||
| 2672 | { | ||||
| 2673 | Elf_Internal_Dyn dyn; | ||||
| 2674 | |||||
| 2675 | bed->s->swap_dyn_in (hash_table->dynobj, extdyn, &dyn); | ||||
| 2676 | if (dyn.d_tag == DT_NEEDED1 | ||||
| 2677 | && dyn.d_un.d_val == strindex) | ||||
| 2678 | { | ||||
| 2679 | _bfd_elf_strtab_delref (hash_table->dynstr, strindex); | ||||
| 2680 | return 1; | ||||
| 2681 | } | ||||
| 2682 | } | ||||
| 2683 | } | ||||
| 2684 | |||||
| 2685 | if (do_it) | ||||
| 2686 | { | ||||
| 2687 | if (!_bfd_elf_add_dynamic_entry (info, DT_NEEDED1, strindex)) | ||||
| 2688 | return -1; | ||||
| 2689 | } | ||||
| 2690 | else | ||||
| 2691 | /* We were just checking for existence of the tag. */ | ||||
| 2692 | _bfd_elf_strtab_delref (hash_table->dynstr, strindex); | ||||
| 2693 | |||||
| 2694 | return 0; | ||||
| 2695 | } | ||||
| 2696 | |||||
| 2697 | /* Sort symbol by value and section. */ | ||||
| 2698 | static int | ||||
| 2699 | elf_sort_symbol (const void *arg1, const void *arg2) | ||||
| 2700 | { | ||||
| 2701 | const struct elf_link_hash_entry *h1; | ||||
| 2702 | const struct elf_link_hash_entry *h2; | ||||
| 2703 | bfd_signed_vma vdiff; | ||||
| 2704 | |||||
| 2705 | h1 = *(const struct elf_link_hash_entry **) arg1; | ||||
| 2706 | h2 = *(const struct elf_link_hash_entry **) arg2; | ||||
| 2707 | vdiff = h1->root.u.def.value - h2->root.u.def.value; | ||||
| 2708 | if (vdiff != 0) | ||||
| 2709 | return vdiff > 0 ? 1 : -1; | ||||
| 2710 | else | ||||
| 2711 | { | ||||
| 2712 | long sdiff = h1->root.u.def.section - h2->root.u.def.section; | ||||
| 2713 | if (sdiff != 0) | ||||
| 2714 | return sdiff > 0 ? 1 : -1; | ||||
| 2715 | } | ||||
| 2716 | return 0; | ||||
| 2717 | } | ||||
| 2718 | |||||
| 2719 | /* This function is used to adjust offsets into .dynstr for | ||||
| 2720 | dynamic symbols. This is called via elf_link_hash_traverse. */ | ||||
| 2721 | |||||
| 2722 | static bfd_boolean | ||||
| 2723 | elf_adjust_dynstr_offsets (struct elf_link_hash_entry *h, void *data) | ||||
| 2724 | { | ||||
| 2725 | struct elf_strtab_hash *dynstr = data; | ||||
| 2726 | |||||
| 2727 | if (h->root.type == bfd_link_hash_warning) | ||||
| 2728 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | ||||
| 2729 | |||||
| 2730 | if (h->dynindx != -1) | ||||
| 2731 | h->dynstr_index = _bfd_elf_strtab_offset (dynstr, h->dynstr_index); | ||||
| 2732 | return TRUE1; | ||||
| 2733 | } | ||||
| 2734 | |||||
| 2735 | /* Assign string offsets in .dynstr, update all structures referencing | ||||
| 2736 | them. */ | ||||
| 2737 | |||||
| 2738 | static bfd_boolean | ||||
| 2739 | elf_finalize_dynstr (bfd *output_bfd, struct bfd_link_info *info) | ||||
| 2740 | { | ||||
| 2741 | struct elf_link_hash_table *hash_table = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash)); | ||||
| 2742 | struct elf_link_local_dynamic_entry *entry; | ||||
| 2743 | struct elf_strtab_hash *dynstr = hash_table->dynstr; | ||||
| 2744 | bfd *dynobj = hash_table->dynobj; | ||||
| 2745 | asection *sdyn; | ||||
| 2746 | bfd_size_type size; | ||||
| 2747 | const struct elf_backend_data *bed; | ||||
| 2748 | bfd_byte *extdyn; | ||||
| 2749 | |||||
| 2750 | _bfd_elf_strtab_finalize (dynstr); | ||||
| 2751 | size = _bfd_elf_strtab_size (dynstr); | ||||
| 2752 | |||||
| 2753 | bed = get_elf_backend_data (dynobj)((const struct elf_backend_data *) (dynobj)->xvec->backend_data ); | ||||
| 2754 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | ||||
| 2755 | BFD_ASSERT (sdyn != NULL){ if (!(sdyn != ((void*)0))) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,2755); }; | ||||
| 2756 | |||||
| 2757 | /* Update all .dynamic entries referencing .dynstr strings. */ | ||||
| 2758 | for (extdyn = sdyn->contents; | ||||
| 2759 | extdyn < sdyn->contents + sdyn->_raw_size; | ||||
| 2760 | extdyn += bed->s->sizeof_dyn) | ||||
| 2761 | { | ||||
| 2762 | Elf_Internal_Dyn dyn; | ||||
| 2763 | |||||
| 2764 | bed->s->swap_dyn_in (dynobj, extdyn, &dyn); | ||||
| 2765 | switch (dyn.d_tag) | ||||
| 2766 | { | ||||
| 2767 | case DT_STRSZ10: | ||||
| 2768 | dyn.d_un.d_val = size; | ||||
| 2769 | break; | ||||
| 2770 | case DT_NEEDED1: | ||||
| 2771 | case DT_SONAME14: | ||||
| 2772 | case DT_RPATH15: | ||||
| 2773 | case DT_RUNPATH29: | ||||
| 2774 | case DT_FILTER0x7fffffff: | ||||
| 2775 | case DT_AUXILIARY0x7ffffffd: | ||||
| 2776 | dyn.d_un.d_val = _bfd_elf_strtab_offset (dynstr, dyn.d_un.d_val); | ||||
| 2777 | break; | ||||
| 2778 | default: | ||||
| 2779 | continue; | ||||
| 2780 | } | ||||
| 2781 | bed->s->swap_dyn_out (dynobj, &dyn, extdyn); | ||||
| 2782 | } | ||||
| 2783 | |||||
| 2784 | /* Now update local dynamic symbols. */ | ||||
| 2785 | for (entry = hash_table->dynlocal; entry ; entry = entry->next) | ||||
| 2786 | entry->isym.st_name = _bfd_elf_strtab_offset (dynstr, | ||||
| 2787 | entry->isym.st_name); | ||||
| 2788 | |||||
| 2789 | /* And the rest of dynamic symbols. */ | ||||
| 2790 | elf_link_hash_traverse (hash_table, elf_adjust_dynstr_offsets, dynstr)(bfd_link_hash_traverse (&(hash_table)->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (elf_adjust_dynstr_offsets ), (dynstr))); | ||||
| 2791 | |||||
| 2792 | /* Adjust version definitions. */ | ||||
| 2793 | if (elf_tdata (output_bfd)((output_bfd) -> tdata.elf_obj_data)->cverdefs) | ||||
| 2794 | { | ||||
| 2795 | asection *s; | ||||
| 2796 | bfd_byte *p; | ||||
| 2797 | bfd_size_type i; | ||||
| 2798 | Elf_Internal_Verdef def; | ||||
| 2799 | Elf_Internal_Verdaux defaux; | ||||
| 2800 | |||||
| 2801 | s = bfd_get_section_by_name (dynobj, ".gnu.version_d"); | ||||
| 2802 | p = s->contents; | ||||
| 2803 | do | ||||
| 2804 | { | ||||
| 2805 | _bfd_elf_swap_verdef_in (output_bfd, (Elf_External_Verdef *) p, | ||||
| 2806 | &def); | ||||
| 2807 | p += sizeof (Elf_External_Verdef); | ||||
| 2808 | for (i = 0; i < def.vd_cnt; ++i) | ||||
| 2809 | { | ||||
| 2810 | _bfd_elf_swap_verdaux_in (output_bfd, | ||||
| 2811 | (Elf_External_Verdaux *) p, &defaux); | ||||
| 2812 | defaux.vda_name = _bfd_elf_strtab_offset (dynstr, | ||||
| 2813 | defaux.vda_name); | ||||
| 2814 | _bfd_elf_swap_verdaux_out (output_bfd, | ||||
| 2815 | &defaux, (Elf_External_Verdaux *) p); | ||||
| 2816 | p += sizeof (Elf_External_Verdaux); | ||||
| 2817 | } | ||||
| 2818 | } | ||||
| 2819 | while (def.vd_next); | ||||
| 2820 | } | ||||
| 2821 | |||||
| 2822 | /* Adjust version references. */ | ||||
| 2823 | if (elf_tdata (output_bfd)((output_bfd) -> tdata.elf_obj_data)->verref) | ||||
| 2824 | { | ||||
| 2825 | asection *s; | ||||
| 2826 | bfd_byte *p; | ||||
| 2827 | bfd_size_type i; | ||||
| 2828 | Elf_Internal_Verneed need; | ||||
| 2829 | Elf_Internal_Vernaux needaux; | ||||
| 2830 | |||||
| 2831 | s = bfd_get_section_by_name (dynobj, ".gnu.version_r"); | ||||
| 2832 | p = s->contents; | ||||
| 2833 | do | ||||
| 2834 | { | ||||
| 2835 | _bfd_elf_swap_verneed_in (output_bfd, (Elf_External_Verneed *) p, | ||||
| 2836 | &need); | ||||
| 2837 | need.vn_file = _bfd_elf_strtab_offset (dynstr, need.vn_file); | ||||
| 2838 | _bfd_elf_swap_verneed_out (output_bfd, &need, | ||||
| 2839 | (Elf_External_Verneed *) p); | ||||
| 2840 | p += sizeof (Elf_External_Verneed); | ||||
| 2841 | for (i = 0; i < need.vn_cnt; ++i) | ||||
| 2842 | { | ||||
| 2843 | _bfd_elf_swap_vernaux_in (output_bfd, | ||||
| 2844 | (Elf_External_Vernaux *) p, &needaux); | ||||
| 2845 | needaux.vna_name = _bfd_elf_strtab_offset (dynstr, | ||||
| 2846 | needaux.vna_name); | ||||
| 2847 | _bfd_elf_swap_vernaux_out (output_bfd, | ||||
| 2848 | &needaux, | ||||
| 2849 | (Elf_External_Vernaux *) p); | ||||
| 2850 | p += sizeof (Elf_External_Vernaux); | ||||
| 2851 | } | ||||
| 2852 | } | ||||
| 2853 | while (need.vn_next); | ||||
| 2854 | } | ||||
| 2855 | |||||
| 2856 | return TRUE1; | ||||
| 2857 | } | ||||
| 2858 | |||||
| 2859 | /* Add symbols from an ELF object file to the linker hash table. */ | ||||
| 2860 | |||||
| 2861 | static bfd_boolean | ||||
| 2862 | elf_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) | ||||
| 2863 | { | ||||
| 2864 | bfd_boolean (*add_symbol_hook) | ||||
| 2865 | (bfd *, struct bfd_link_info *, Elf_Internal_Sym *, | ||||
| 2866 | const char **, flagword *, asection **, bfd_vma *); | ||||
| 2867 | bfd_boolean (*check_relocs) | ||||
| 2868 | (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *); | ||||
| 2869 | bfd_boolean collect; | ||||
| 2870 | Elf_Internal_Shdr *hdr; | ||||
| 2871 | bfd_size_type symcount; | ||||
| 2872 | bfd_size_type extsymcount; | ||||
| 2873 | bfd_size_type extsymoff; | ||||
| 2874 | struct elf_link_hash_entry **sym_hash; | ||||
| 2875 | bfd_boolean dynamic; | ||||
| 2876 | Elf_External_Versym *extversym = NULL((void*)0); | ||||
| 2877 | Elf_External_Versym *ever; | ||||
| 2878 | struct elf_link_hash_entry *weaks; | ||||
| 2879 | struct elf_link_hash_entry **nondeflt_vers = NULL((void*)0); | ||||
| 2880 | bfd_size_type nondeflt_vers_cnt = 0; | ||||
| 2881 | Elf_Internal_Sym *isymbuf = NULL((void*)0); | ||||
| 2882 | Elf_Internal_Sym *isym; | ||||
| 2883 | Elf_Internal_Sym *isymend; | ||||
| 2884 | const struct elf_backend_data *bed; | ||||
| 2885 | bfd_boolean add_needed; | ||||
| 2886 | struct elf_link_hash_table * hash_table; | ||||
| 2887 | bfd_size_type amt; | ||||
| 2888 | |||||
| 2889 | hash_table = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash)); | ||||
| 2890 | |||||
| 2891 | bed = get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data ); | ||||
| 2892 | add_symbol_hook = bed->elf_add_symbol_hook; | ||||
| 2893 | collect = bed->collect; | ||||
| 2894 | |||||
| 2895 | if ((abfd->flags & DYNAMIC0x40) == 0) | ||||
| 2896 | dynamic = FALSE0; | ||||
| 2897 | else | ||||
| 2898 | { | ||||
| 2899 | dynamic = TRUE1; | ||||
| 2900 | |||||
| 2901 | /* You can't use -r against a dynamic object. Also, there's no | ||||
| 2902 | hope of using a dynamic object which does not exactly match | ||||
| 2903 | the format of the output file. */ | ||||
| 2904 | if (info->relocatable | ||||
| 2905 | || !is_elf_hash_table (hash_table)(((struct bfd_link_hash_table *) (hash_table))->type == bfd_link_elf_hash_table ) | ||||
| 2906 | || hash_table->root.creator != abfd->xvec) | ||||
| 2907 | { | ||||
| 2908 | bfd_set_error (bfd_error_invalid_operation); | ||||
| 2909 | goto error_return; | ||||
| 2910 | } | ||||
| 2911 | } | ||||
| 2912 | |||||
| 2913 | /* As a GNU extension, any input sections which are named | ||||
| 2914 | .gnu.warning.SYMBOL are treated as warning symbols for the given | ||||
| 2915 | symbol. This differs from .gnu.warning sections, which generate | ||||
| 2916 | warnings when they are included in an output file. */ | ||||
| 2917 | if (info->executable) | ||||
| 2918 | { | ||||
| 2919 | asection *s; | ||||
| 2920 | |||||
| 2921 | for (s = abfd->sections; s != NULL((void*)0); s = s->next) | ||||
| 2922 | { | ||||
| 2923 | const char *name; | ||||
| 2924 | |||||
| 2925 | name = bfd_get_section_name (abfd, s)((s)->name + 0); | ||||
| 2926 | if (strncmp (name, ".gnu.warning.", sizeof ".gnu.warning." - 1) == 0) | ||||
| 2927 | { | ||||
| 2928 | char *msg; | ||||
| 2929 | bfd_size_type sz; | ||||
| 2930 | |||||
| 2931 | name += sizeof ".gnu.warning." - 1; | ||||
| 2932 | |||||
| 2933 | /* If this is a shared object, then look up the symbol | ||||
| 2934 | in the hash table. If it is there, and it is already | ||||
| 2935 | been defined, then we will not be using the entry | ||||
| 2936 | from this shared object, so we don't need to warn. | ||||
| 2937 | FIXME: If we see the definition in a regular object | ||||
| 2938 | later on, we will warn, but we shouldn't. The only | ||||
| 2939 | fix is to keep track of what warnings we are supposed | ||||
| 2940 | to emit, and then handle them all at the end of the | ||||
| 2941 | link. */ | ||||
| 2942 | if (dynamic) | ||||
| 2943 | { | ||||
| 2944 | struct elf_link_hash_entry *h; | ||||
| 2945 | |||||
| 2946 | h = elf_link_hash_lookup (hash_table, name,((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(hash_table )->root, (name), (0), (0), (1))) | ||||
| 2947 | FALSE, FALSE, TRUE)((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(hash_table )->root, (name), (0), (0), (1))); | ||||
| 2948 | |||||
| 2949 | /* FIXME: What about bfd_link_hash_common? */ | ||||
| 2950 | if (h != NULL((void*)0) | ||||
| 2951 | && (h->root.type == bfd_link_hash_defined | ||||
| 2952 | || h->root.type == bfd_link_hash_defweak)) | ||||
| 2953 | { | ||||
| 2954 | /* We don't want to issue this warning. Clobber | ||||
| 2955 | the section size so that the warning does not | ||||
| 2956 | get copied into the output file. */ | ||||
| 2957 | s->_raw_size = 0; | ||||
| 2958 | continue; | ||||
| 2959 | } | ||||
| 2960 | } | ||||
| 2961 | |||||
| 2962 | sz = bfd_section_size (abfd, s)((s)->_raw_size); | ||||
| 2963 | msg = bfd_alloc (abfd, sz + 1); | ||||
| 2964 | if (msg == NULL((void*)0)) | ||||
| 2965 | goto error_return; | ||||
| 2966 | |||||
| 2967 | if (! bfd_get_section_contents (abfd, s, msg, 0, sz)) | ||||
| 2968 | goto error_return; | ||||
| 2969 | |||||
| 2970 | msg[sz] = '\0'; | ||||
| 2971 | |||||
| 2972 | if (! (_bfd_generic_link_add_one_symbol | ||||
| 2973 | (info, abfd, name, BSF_WARNING0x1000, s, 0, msg, | ||||
| 2974 | FALSE0, collect, NULL((void*)0)))) | ||||
| 2975 | goto error_return; | ||||
| 2976 | |||||
| 2977 | if (! info->relocatable) | ||||
| 2978 | { | ||||
| 2979 | /* Clobber the section size so that the warning does | ||||
| 2980 | not get copied into the output file. */ | ||||
| 2981 | s->_raw_size = 0; | ||||
| 2982 | } | ||||
| 2983 | } | ||||
| 2984 | } | ||||
| 2985 | } | ||||
| 2986 | |||||
| 2987 | add_needed = TRUE1; | ||||
| 2988 | if (! dynamic) | ||||
| 2989 | { | ||||
| 2990 | /* If we are creating a shared library, create all the dynamic | ||||
| 2991 | sections immediately. We need to attach them to something, | ||||
| 2992 | so we attach them to this BFD, provided it is the right | ||||
| 2993 | format. FIXME: If there are no input BFD's of the same | ||||
| 2994 | format as the output, we can't make a shared library. */ | ||||
| 2995 | if (info->shared | ||||
| 2996 | && is_elf_hash_table (hash_table)(((struct bfd_link_hash_table *) (hash_table))->type == bfd_link_elf_hash_table ) | ||||
| 2997 | && hash_table->root.creator == abfd->xvec | ||||
| 2998 | && ! hash_table->dynamic_sections_created) | ||||
| 2999 | { | ||||
| 3000 | if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) | ||||
| 3001 | goto error_return; | ||||
| 3002 | } | ||||
| 3003 | } | ||||
| 3004 | else if (!is_elf_hash_table (hash_table)(((struct bfd_link_hash_table *) (hash_table))->type == bfd_link_elf_hash_table )) | ||||
| 3005 | goto error_return; | ||||
| 3006 | else | ||||
| 3007 | { | ||||
| 3008 | asection *s; | ||||
| 3009 | const char *soname = NULL((void*)0); | ||||
| 3010 | struct bfd_link_needed_list *rpath = NULL((void*)0), *runpath = NULL((void*)0); | ||||
| 3011 | int ret; | ||||
| 3012 | |||||
| 3013 | /* ld --just-symbols and dynamic objects don't mix very well. | ||||
| 3014 | Test for --just-symbols by looking at info set up by | ||||
| 3015 | _bfd_elf_link_just_syms. */ | ||||
| 3016 | if ((s = abfd->sections) != NULL((void*)0) | ||||
| 3017 | && s->sec_info_type == ELF_INFO_TYPE_JUST_SYMS4) | ||||
| 3018 | goto error_return; | ||||
| 3019 | |||||
| 3020 | /* If this dynamic lib was specified on the command line with | ||||
| 3021 | --as-needed in effect, then we don't want to add a DT_NEEDED | ||||
| 3022 | tag unless the lib is actually used. Similary for libs brought | ||||
| 3023 | in by another lib's DT_NEEDED. */ | ||||
| 3024 | add_needed = elf_dyn_lib_class (abfd)(((abfd) -> tdata.elf_obj_data) -> dyn_lib_class) == DYN_NORMAL; | ||||
| 3025 | |||||
| 3026 | s = bfd_get_section_by_name (abfd, ".dynamic"); | ||||
| 3027 | if (s != NULL((void*)0)) | ||||
| 3028 | { | ||||
| 3029 | bfd_byte *dynbuf; | ||||
| 3030 | bfd_byte *extdyn; | ||||
| 3031 | int elfsec; | ||||
| 3032 | unsigned long shlink; | ||||
| 3033 | |||||
| 3034 | dynbuf = bfd_malloc (s->_raw_size); | ||||
| 3035 | if (dynbuf == NULL((void*)0)) | ||||
| 3036 | goto error_return; | ||||
| 3037 | |||||
| 3038 | if (! bfd_get_section_contents (abfd, s, dynbuf, 0, s->_raw_size)) | ||||
| 3039 | goto error_free_dyn; | ||||
| 3040 | |||||
| 3041 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | ||||
| 3042 | if (elfsec == -1) | ||||
| 3043 | goto error_free_dyn; | ||||
| 3044 | shlink = elf_elfsections (abfd)(((abfd) -> tdata.elf_obj_data) -> elf_sect_ptr)[elfsec]->sh_link; | ||||
| 3045 | |||||
| 3046 | for (extdyn = dynbuf; | ||||
| 3047 | extdyn < dynbuf + s->_raw_size; | ||||
| 3048 | extdyn += bed->s->sizeof_dyn) | ||||
| 3049 | { | ||||
| 3050 | Elf_Internal_Dyn dyn; | ||||
| 3051 | |||||
| 3052 | bed->s->swap_dyn_in (abfd, extdyn, &dyn); | ||||
| 3053 | if (dyn.d_tag == DT_SONAME14) | ||||
| 3054 | { | ||||
| 3055 | unsigned int tagv = dyn.d_un.d_val; | ||||
| 3056 | soname = bfd_elf_string_from_elf_section (abfd, shlink, tagv); | ||||
| 3057 | if (soname == NULL((void*)0)) | ||||
| 3058 | goto error_free_dyn; | ||||
| 3059 | } | ||||
| 3060 | if (dyn.d_tag == DT_NEEDED1) | ||||
| 3061 | { | ||||
| 3062 | struct bfd_link_needed_list *n, **pn; | ||||
| 3063 | char *fnm, *anm; | ||||
| 3064 | unsigned int tagv = dyn.d_un.d_val; | ||||
| 3065 | |||||
| 3066 | amt = sizeof (struct bfd_link_needed_list); | ||||
| 3067 | n = bfd_alloc (abfd, amt); | ||||
| 3068 | fnm = bfd_elf_string_from_elf_section (abfd, shlink, tagv); | ||||
| 3069 | if (n == NULL((void*)0) || fnm == NULL((void*)0)) | ||||
| 3070 | goto error_free_dyn; | ||||
| 3071 | amt = strlen (fnm) + 1; | ||||
| 3072 | anm = bfd_alloc (abfd, amt); | ||||
| 3073 | if (anm == NULL((void*)0)) | ||||
| 3074 | goto error_free_dyn; | ||||
| 3075 | memcpy (anm, fnm, amt); | ||||
| 3076 | n->name = anm; | ||||
| 3077 | n->by = abfd; | ||||
| 3078 | n->next = NULL((void*)0); | ||||
| 3079 | for (pn = & hash_table->needed; | ||||
| 3080 | *pn != NULL((void*)0); | ||||
| 3081 | pn = &(*pn)->next) | ||||
| 3082 | ; | ||||
| 3083 | *pn = n; | ||||
| 3084 | } | ||||
| 3085 | if (dyn.d_tag == DT_RUNPATH29) | ||||
| 3086 | { | ||||
| 3087 | struct bfd_link_needed_list *n, **pn; | ||||
| 3088 | char *fnm, *anm; | ||||
| 3089 | unsigned int tagv = dyn.d_un.d_val; | ||||
| 3090 | |||||
| 3091 | amt = sizeof (struct bfd_link_needed_list); | ||||
| 3092 | n = bfd_alloc (abfd, amt); | ||||
| 3093 | fnm = bfd_elf_string_from_elf_section (abfd, shlink, tagv); | ||||
| 3094 | if (n == NULL((void*)0) || fnm == NULL((void*)0)) | ||||
| 3095 | goto error_free_dyn; | ||||
| 3096 | amt = strlen (fnm) + 1; | ||||
| 3097 | anm = bfd_alloc (abfd, amt); | ||||
| 3098 | if (anm == NULL((void*)0)) | ||||
| 3099 | goto error_free_dyn; | ||||
| 3100 | memcpy (anm, fnm, amt); | ||||
| 3101 | n->name = anm; | ||||
| 3102 | n->by = abfd; | ||||
| 3103 | n->next = NULL((void*)0); | ||||
| 3104 | for (pn = & runpath; | ||||
| 3105 | *pn != NULL((void*)0); | ||||
| 3106 | pn = &(*pn)->next) | ||||
| 3107 | ; | ||||
| 3108 | *pn = n; | ||||
| 3109 | } | ||||
| 3110 | /* Ignore DT_RPATH if we have seen DT_RUNPATH. */ | ||||
| 3111 | if (!runpath && dyn.d_tag == DT_RPATH15) | ||||
| 3112 | { | ||||
| 3113 | struct bfd_link_needed_list *n, **pn; | ||||
| 3114 | char *fnm, *anm; | ||||
| 3115 | unsigned int tagv = dyn.d_un.d_val; | ||||
| 3116 | |||||
| 3117 | amt = sizeof (struct bfd_link_needed_list); | ||||
| 3118 | n = bfd_alloc (abfd, amt); | ||||
| 3119 | fnm = bfd_elf_string_from_elf_section (abfd, shlink, tagv); | ||||
| 3120 | if (n == NULL((void*)0) || fnm == NULL((void*)0)) | ||||
| 3121 | goto error_free_dyn; | ||||
| 3122 | amt = strlen (fnm) + 1; | ||||
| 3123 | anm = bfd_alloc (abfd, amt); | ||||
| 3124 | if (anm == NULL((void*)0)) | ||||
| 3125 | { | ||||
| 3126 | error_free_dyn: | ||||
| 3127 | free (dynbuf); | ||||
| 3128 | goto error_return; | ||||
| 3129 | } | ||||
| 3130 | memcpy (anm, fnm, amt); | ||||
| 3131 | n->name = anm; | ||||
| 3132 | n->by = abfd; | ||||
| 3133 | n->next = NULL((void*)0); | ||||
| 3134 | for (pn = & rpath; | ||||
| 3135 | *pn != NULL((void*)0); | ||||
| 3136 | pn = &(*pn)->next) | ||||
| 3137 | ; | ||||
| 3138 | *pn = n; | ||||
| 3139 | } | ||||
| 3140 | } | ||||
| 3141 | |||||
| 3142 | free (dynbuf); | ||||
| 3143 | } | ||||
| 3144 | |||||
| 3145 | /* DT_RUNPATH overrides DT_RPATH. Do _NOT_ bfd_release, as that | ||||
| 3146 | frees all more recently bfd_alloc'd blocks as well. */ | ||||
| 3147 | if (runpath) | ||||
| 3148 | rpath = runpath; | ||||
| 3149 | |||||
| 3150 | if (rpath) | ||||
| 3151 | { | ||||
| 3152 | struct bfd_link_needed_list **pn; | ||||
| 3153 | for (pn = & hash_table->runpath; | ||||
| 3154 | *pn != NULL((void*)0); | ||||
| 3155 | pn = &(*pn)->next) | ||||
| 3156 | ; | ||||
| 3157 | *pn = rpath; | ||||
| 3158 | } | ||||
| 3159 | |||||
| 3160 | /* We do not want to include any of the sections in a dynamic | ||||
| 3161 | object in the output file. We hack by simply clobbering the | ||||
| 3162 | list of sections in the BFD. This could be handled more | ||||
| 3163 | cleanly by, say, a new section flag; the existing | ||||
| 3164 | SEC_NEVER_LOAD flag is not the one we want, because that one | ||||
| 3165 | still implies that the section takes up space in the output | ||||
| 3166 | file. */ | ||||
| 3167 | bfd_section_list_clear (abfd); | ||||
| 3168 | |||||
| 3169 | /* If this is the first dynamic object found in the link, create | ||||
| 3170 | the special sections required for dynamic linking. */ | ||||
| 3171 | if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) | ||||
| 3172 | goto error_return; | ||||
| 3173 | |||||
| 3174 | /* Find the name to use in a DT_NEEDED entry that refers to this | ||||
| 3175 | object. If the object has a DT_SONAME entry, we use it. | ||||
| 3176 | Otherwise, if the generic linker stuck something in | ||||
| 3177 | elf_dt_name, we use that. Otherwise, we just use the file | ||||
| 3178 | name. */ | ||||
| 3179 | if (soname == NULL((void*)0) || *soname == '\0') | ||||
| 3180 | { | ||||
| 3181 | soname = elf_dt_name (abfd)(((abfd) -> tdata.elf_obj_data) -> dt_name); | ||||
| 3182 | if (soname == NULL((void*)0) || *soname == '\0') | ||||
| 3183 | soname = bfd_get_filename (abfd)((char *) (abfd)->filename); | ||||
| 3184 | } | ||||
| 3185 | |||||
| 3186 | /* Save the SONAME because sometimes the linker emulation code | ||||
| 3187 | will need to know it. */ | ||||
| 3188 | elf_dt_name (abfd)(((abfd) -> tdata.elf_obj_data) -> dt_name) = soname; | ||||
| 3189 | |||||
| 3190 | ret = elf_add_dt_needed_tag (info, soname, add_needed); | ||||
| 3191 | if (ret < 0) | ||||
| 3192 | goto error_return; | ||||
| 3193 | |||||
| 3194 | /* If we have already included this dynamic object in the | ||||
| 3195 | link, just ignore it. There is no reason to include a | ||||
| 3196 | particular dynamic object more than once. */ | ||||
| 3197 | if (ret > 0) | ||||
| 3198 | return TRUE1; | ||||
| 3199 | } | ||||
| 3200 | |||||
| 3201 | /* If this is a dynamic object, we always link against the .dynsym | ||||
| 3202 | symbol table, not the .symtab symbol table. The dynamic linker | ||||
| 3203 | will only see the .dynsym symbol table, so there is no reason to | ||||
| 3204 | look at .symtab for a dynamic object. */ | ||||
| 3205 | |||||
| 3206 | if (! dynamic || elf_dynsymtab (abfd)(((abfd) -> tdata.elf_obj_data) -> dynsymtab_section) == 0) | ||||
| 3207 | hdr = &elf_tdata (abfd)((abfd) -> tdata.elf_obj_data)->symtab_hdr; | ||||
| 3208 | else | ||||
| 3209 | hdr = &elf_tdata (abfd)((abfd) -> tdata.elf_obj_data)->dynsymtab_hdr; | ||||
| 3210 | |||||
| 3211 | symcount = hdr->sh_size / bed->s->sizeof_sym; | ||||
| 3212 | |||||
| 3213 | /* The sh_info field of the symtab header tells us where the | ||||
| 3214 | external symbols start. We don't care about the local symbols at | ||||
| 3215 | this point. */ | ||||
| 3216 | if (elf_bad_symtab (abfd)(((abfd) -> tdata.elf_obj_data) -> bad_symtab)) | ||||
| 3217 | { | ||||
| 3218 | extsymcount = symcount; | ||||
| 3219 | extsymoff = 0; | ||||
| 3220 | } | ||||
| 3221 | else | ||||
| 3222 | { | ||||
| 3223 | extsymcount = symcount - hdr->sh_info; | ||||
| 3224 | extsymoff = hdr->sh_info; | ||||
| 3225 | } | ||||
| 3226 | |||||
| 3227 | sym_hash = NULL((void*)0); | ||||
| 3228 | if (extsymcount != 0) | ||||
| 3229 | { | ||||
| 3230 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, extsymcount, extsymoff, | ||||
| 3231 | NULL((void*)0), NULL((void*)0), NULL((void*)0)); | ||||
| 3232 | if (isymbuf == NULL((void*)0)) | ||||
| 3233 | goto error_return; | ||||
| 3234 | |||||
| 3235 | /* We store a pointer to the hash table entry for each external | ||||
| 3236 | symbol. */ | ||||
| 3237 | amt = extsymcount * sizeof (struct elf_link_hash_entry *); | ||||
| 3238 | sym_hash = bfd_alloc (abfd, amt); | ||||
| 3239 | if (sym_hash == NULL((void*)0)) | ||||
| 3240 | goto error_free_sym; | ||||
| 3241 | elf_sym_hashes (abfd)(((abfd) -> tdata.elf_obj_data) -> sym_hashes) = sym_hash; | ||||
| 3242 | } | ||||
| 3243 | |||||
| 3244 | if (dynamic) | ||||
| 3245 | { | ||||
| 3246 | /* Read in any version definitions. */ | ||||
| 3247 | if (! _bfd_elf_slurp_version_tables (abfd)) | ||||
| 3248 | goto error_free_sym; | ||||
| 3249 | |||||
| 3250 | /* Read in the symbol versions, but don't bother to convert them | ||||
| 3251 | to internal format. */ | ||||
| 3252 | if (elf_dynversym (abfd)(((abfd) -> tdata.elf_obj_data) -> dynversym_section) != 0) | ||||
| 3253 | { | ||||
| 3254 | Elf_Internal_Shdr *versymhdr; | ||||
| 3255 | |||||
| 3256 | versymhdr = &elf_tdata (abfd)((abfd) -> tdata.elf_obj_data)->dynversym_hdr; | ||||
| 3257 | extversym = bfd_malloc (versymhdr->sh_size); | ||||
| 3258 | if (extversym == NULL((void*)0)) | ||||
| 3259 | goto error_free_sym; | ||||
| 3260 | amt = versymhdr->sh_size; | ||||
| 3261 | if (bfd_seek (abfd, versymhdr->sh_offset, SEEK_SET0) != 0 | ||||
| 3262 | || bfd_bread (extversym, amt, abfd) != amt) | ||||
| 3263 | goto error_free_vers; | ||||
| 3264 | } | ||||
| 3265 | } | ||||
| 3266 | |||||
| 3267 | weaks = NULL((void*)0); | ||||
| 3268 | |||||
| 3269 | ever = extversym != NULL((void*)0) ? extversym + extsymoff : NULL((void*)0); | ||||
| 3270 | for (isym = isymbuf, isymend = isymbuf + extsymcount; | ||||
| 3271 | isym < isymend; | ||||
| 3272 | isym++, sym_hash++, ever = (ever != NULL((void*)0) ? ever + 1 : NULL((void*)0))) | ||||
| 3273 | { | ||||
| 3274 | int bind; | ||||
| 3275 | bfd_vma value; | ||||
| 3276 | asection *sec; | ||||
| 3277 | flagword flags; | ||||
| 3278 | const char *name; | ||||
| 3279 | struct elf_link_hash_entry *h; | ||||
| 3280 | bfd_boolean definition; | ||||
| 3281 | bfd_boolean size_change_ok; | ||||
| 3282 | bfd_boolean type_change_ok; | ||||
| 3283 | bfd_boolean new_weakdef; | ||||
| 3284 | bfd_boolean override; | ||||
| 3285 | unsigned int old_alignment; | ||||
| 3286 | bfd *old_bfd; | ||||
| 3287 | |||||
| 3288 | override = FALSE0; | ||||
| 3289 | |||||
| 3290 | flags = BSF_NO_FLAGS0x00; | ||||
| 3291 | sec = NULL((void*)0); | ||||
| 3292 | value = isym->st_value; | ||||
| 3293 | *sym_hash = NULL((void*)0); | ||||
| 3294 | |||||
| 3295 | bind = ELF_ST_BIND (isym->st_info)(((unsigned int)(isym->st_info)) >> 4); | ||||
| 3296 | if (bind == STB_LOCAL0) | ||||
| 3297 | { | ||||
| 3298 | /* This should be impossible, since ELF requires that all | ||||
| 3299 | global symbols follow all local symbols, and that sh_info | ||||
| 3300 | point to the first global symbol. Unfortunately, Irix 5 | ||||
| 3301 | screws this up. */ | ||||
| 3302 | continue; | ||||
| 3303 | } | ||||
| 3304 | else if (bind == STB_GLOBAL1) | ||||
| 3305 | { | ||||
| 3306 | if (isym->st_shndx != SHN_UNDEF0 | ||||
| 3307 | && isym->st_shndx != SHN_COMMON0xFFF2) | ||||
| 3308 | flags = BSF_GLOBAL0x02; | ||||
| 3309 | } | ||||
| 3310 | else if (bind == STB_WEAK2) | ||||
| 3311 | flags = BSF_WEAK0x80; | ||||
| 3312 | else | ||||
| 3313 | { | ||||
| 3314 | /* Leave it up to the processor backend. */ | ||||
| 3315 | } | ||||
| 3316 | |||||
| 3317 | if (isym->st_shndx == SHN_UNDEF0) | ||||
| 3318 | sec = bfd_und_section_ptr((asection *) &bfd_und_section); | ||||
| 3319 | else if (isym->st_shndx < SHN_LORESERVE0xFF00 || isym->st_shndx > SHN_HIRESERVE0xFFFF) | ||||
| 3320 | { | ||||
| 3321 | sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | ||||
| 3322 | if (sec == NULL((void*)0)) | ||||
| 3323 | sec = bfd_abs_section_ptr((asection *) &bfd_abs_section); | ||||
| 3324 | else if ((abfd->flags & (EXEC_P0x02 | DYNAMIC0x40)) != 0) | ||||
| 3325 | value -= sec->vma; | ||||
| 3326 | } | ||||
| 3327 | else if (isym->st_shndx == SHN_ABS0xFFF1) | ||||
| 3328 | sec = bfd_abs_section_ptr((asection *) &bfd_abs_section); | ||||
| 3329 | else if (isym->st_shndx == SHN_COMMON0xFFF2) | ||||
| 3330 | { | ||||
| 3331 | sec = bfd_com_section_ptr((asection *) &bfd_com_section); | ||||
| 3332 | /* What ELF calls the size we call the value. What ELF | ||||
| 3333 | calls the value we call the alignment. */ | ||||
| 3334 | value = isym->st_size; | ||||
| 3335 | } | ||||
| 3336 | else | ||||
| 3337 | { | ||||
| 3338 | /* Leave it up to the processor backend. */ | ||||
| 3339 | } | ||||
| 3340 | |||||
| 3341 | name = bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | ||||
| 3342 | isym->st_name); | ||||
| 3343 | if (name == NULL((void*)0)) | ||||
| 3344 | goto error_free_vers; | ||||
| 3345 | |||||
| 3346 | if (isym->st_shndx == SHN_COMMON0xFFF2 | ||||
| 3347 | && ELF_ST_TYPE (isym->st_info)((isym->st_info) & 0xF) == STT_TLS6) | ||||
| 3348 | { | ||||
| 3349 | asection *tcomm = bfd_get_section_by_name (abfd, ".tcommon"); | ||||
| 3350 | |||||
| 3351 | if (tcomm == NULL((void*)0)) | ||||
| 3352 | { | ||||
| 3353 | tcomm = bfd_make_section (abfd, ".tcommon"); | ||||
| 3354 | if (tcomm == NULL((void*)0) | ||||
| 3355 | || !bfd_set_section_flags (abfd, tcomm, (SEC_ALLOC0x001 | ||||
| 3356 | | SEC_IS_COMMON0x8000 | ||||
| 3357 | | SEC_LINKER_CREATED0x800000 | ||||
| 3358 | | SEC_THREAD_LOCAL0x1000))) | ||||
| 3359 | goto error_free_vers; | ||||
| 3360 | } | ||||
| 3361 | sec = tcomm; | ||||
| 3362 | } | ||||
| 3363 | else if (add_symbol_hook) | ||||
| 3364 | { | ||||
| 3365 | if (! (*add_symbol_hook) (abfd, info, isym, &name, &flags, &sec, | ||||
| 3366 | &value)) | ||||
| 3367 | goto error_free_vers; | ||||
| 3368 | |||||
| 3369 | /* The hook function sets the name to NULL if this symbol | ||||
| 3370 | should be skipped for some reason. */ | ||||
| 3371 | if (name == NULL((void*)0)) | ||||
| 3372 | continue; | ||||
| 3373 | } | ||||
| 3374 | |||||
| 3375 | /* Sanity check that all possibilities were handled. */ | ||||
| 3376 | if (sec == NULL((void*)0)) | ||||
| 3377 | { | ||||
| 3378 | bfd_set_error (bfd_error_bad_value); | ||||
| 3379 | goto error_free_vers; | ||||
| 3380 | } | ||||
| 3381 | |||||
| 3382 | if (bfd_is_und_section (sec)((sec) == ((asection *) &bfd_und_section)) | ||||
| 3383 | || bfd_is_com_section (sec)(((sec)->flags & 0x8000) != 0)) | ||||
| 3384 | definition = FALSE0; | ||||
| 3385 | else | ||||
| 3386 | definition = TRUE1; | ||||
| 3387 | |||||
| 3388 | size_change_ok = FALSE0; | ||||
| 3389 | type_change_ok = get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data )->type_change_ok; | ||||
| 3390 | old_alignment = 0; | ||||
| 3391 | old_bfd = NULL((void*)0); | ||||
| 3392 | |||||
| 3393 | if (is_elf_hash_table (hash_table)(((struct bfd_link_hash_table *) (hash_table))->type == bfd_link_elf_hash_table )) | ||||
| 3394 | { | ||||
| 3395 | Elf_Internal_Versym iver; | ||||
| 3396 | unsigned int vernum = 0; | ||||
| 3397 | bfd_boolean skip; | ||||
| 3398 | |||||
| 3399 | if (ever != NULL((void*)0)) | ||||
| 3400 | { | ||||
| 3401 | _bfd_elf_swap_versym_in (abfd, ever, &iver); | ||||
| 3402 | vernum = iver.vs_vers & VERSYM_VERSION0x7fff; | ||||
| 3403 | |||||
| 3404 | /* If this is a hidden symbol, or if it is not version | ||||
| 3405 | 1, we append the version name to the symbol name. | ||||
| 3406 | However, we do not modify a non-hidden absolute | ||||
| 3407 | symbol, because it might be the version symbol | ||||
| 3408 | itself. FIXME: What if it isn't? */ | ||||
| 3409 | if ((iver.vs_vers & VERSYM_HIDDEN0x8000) != 0 | ||||
| 3410 | || (vernum > 1 && ! bfd_is_abs_section (sec)((sec) == ((asection *) &bfd_abs_section)))) | ||||
| 3411 | { | ||||
| 3412 | const char *verstr; | ||||
| 3413 | size_t namelen, verlen, newlen; | ||||
| 3414 | char *newname, *p; | ||||
| 3415 | |||||
| 3416 | if (isym->st_shndx != SHN_UNDEF0) | ||||
| 3417 | { | ||||
| 3418 | if (vernum > elf_tdata (abfd)((abfd) -> tdata.elf_obj_data)->dynverdef_hdr.sh_info) | ||||
| 3419 | { | ||||
| 3420 | (*_bfd_error_handler) | ||||
| 3421 | (_("%s: %s: invalid version %u (max %d)")("%s: %s: invalid version %u (max %d)"), | ||||
| 3422 | bfd_archive_filename (abfd), name, vernum, | ||||
| 3423 | elf_tdata (abfd)((abfd) -> tdata.elf_obj_data)->dynverdef_hdr.sh_info); | ||||
| 3424 | bfd_set_error (bfd_error_bad_value); | ||||
| 3425 | goto error_free_vers; | ||||
| 3426 | } | ||||
| 3427 | else if (vernum > 1) | ||||
| 3428 | verstr = | ||||
| 3429 | elf_tdata (abfd)((abfd) -> tdata.elf_obj_data)->verdef[vernum - 1].vd_nodename; | ||||
| 3430 | else | ||||
| 3431 | verstr = ""; | ||||
| 3432 | } | ||||
| 3433 | else | ||||
| 3434 | { | ||||
| 3435 | /* We cannot simply test for the number of | ||||
| 3436 | entries in the VERNEED section since the | ||||
| 3437 | numbers for the needed versions do not start | ||||
| 3438 | at 0. */ | ||||
| 3439 | Elf_Internal_Verneed *t; | ||||
| 3440 | |||||
| 3441 | verstr = NULL((void*)0); | ||||
| 3442 | for (t = elf_tdata (abfd)((abfd) -> tdata.elf_obj_data)->verref; | ||||
| 3443 | t != NULL((void*)0); | ||||
| 3444 | t = t->vn_nextref) | ||||
| 3445 | { | ||||
| 3446 | Elf_Internal_Vernaux *a; | ||||
| 3447 | |||||
| 3448 | for (a = t->vn_auxptr; a != NULL((void*)0); a = a->vna_nextptr) | ||||
| 3449 | { | ||||
| 3450 | if (a->vna_other == vernum) | ||||
| 3451 | { | ||||
| 3452 | verstr = a->vna_nodename; | ||||
| 3453 | break; | ||||
| 3454 | } | ||||
| 3455 | } | ||||
| 3456 | if (a != NULL((void*)0)) | ||||
| 3457 | break; | ||||
| 3458 | } | ||||
| 3459 | if (verstr == NULL((void*)0)) | ||||
| 3460 | { | ||||
| 3461 | (*_bfd_error_handler) | ||||
| 3462 | (_("%s: %s: invalid needed version %d")("%s: %s: invalid needed version %d"), | ||||
| 3463 | bfd_archive_filename (abfd), name, vernum); | ||||
| 3464 | bfd_set_error (bfd_error_bad_value); | ||||
| 3465 | goto error_free_vers; | ||||
| 3466 | } | ||||
| 3467 | } | ||||
| 3468 | |||||
| 3469 | namelen = strlen (name); | ||||
| 3470 | verlen = strlen (verstr); | ||||
| 3471 | newlen = namelen + verlen + 2; | ||||
| 3472 | if ((iver.vs_vers & VERSYM_HIDDEN0x8000) == 0 | ||||
| 3473 | && isym->st_shndx != SHN_UNDEF0) | ||||
| 3474 | ++newlen; | ||||
| 3475 | |||||
| 3476 | newname = bfd_alloc (abfd, newlen); | ||||
| 3477 | if (newname == NULL((void*)0)) | ||||
| 3478 | goto error_free_vers; | ||||
| 3479 | memcpy (newname, name, namelen); | ||||
| 3480 | p = newname + namelen; | ||||
| 3481 | *p++ = ELF_VER_CHR'@'; | ||||
| 3482 | /* If this is a defined non-hidden version symbol, | ||||
| 3483 | we add another @ to the name. This indicates the | ||||
| 3484 | default version of the symbol. */ | ||||
| 3485 | if ((iver.vs_vers & VERSYM_HIDDEN0x8000) == 0 | ||||
| 3486 | && isym->st_shndx != SHN_UNDEF0) | ||||
| 3487 | *p++ = ELF_VER_CHR'@'; | ||||
| 3488 | memcpy (p, verstr, verlen + 1); | ||||
| 3489 | |||||
| 3490 | name = newname; | ||||
| 3491 | } | ||||
| 3492 | } | ||||
| 3493 | |||||
| 3494 | if (!_bfd_elf_merge_symbol (abfd, info, name, isym, &sec, &value, | ||||
| 3495 | sym_hash, &skip, &override, | ||||
| 3496 | &type_change_ok, &size_change_ok)) | ||||
| 3497 | goto error_free_vers; | ||||
| 3498 | |||||
| 3499 | if (skip) | ||||
| 3500 | continue; | ||||
| 3501 | |||||
| 3502 | if (override) | ||||
| 3503 | definition = FALSE0; | ||||
| 3504 | |||||
| 3505 | h = *sym_hash; | ||||
| 3506 | while (h->root.type == bfd_link_hash_indirect | ||||
| 3507 | || h->root.type == bfd_link_hash_warning) | ||||
| 3508 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | ||||
| 3509 | |||||
| 3510 | /* Remember the old alignment if this is a common symbol, so | ||||
| 3511 | that we don't reduce the alignment later on. We can't | ||||
| 3512 | check later, because _bfd_generic_link_add_one_symbol | ||||
| 3513 | will set a default for the alignment which we want to | ||||
| 3514 | override. We also remember the old bfd where the existing | ||||
| 3515 | definition comes from. */ | ||||
| 3516 | switch (h->root.type) | ||||
| 3517 | { | ||||
| 3518 | default: | ||||
| 3519 | break; | ||||
| 3520 | |||||
| 3521 | case bfd_link_hash_defined: | ||||
| 3522 | case bfd_link_hash_defweak: | ||||
| 3523 | old_bfd = h->root.u.def.section->owner; | ||||
| 3524 | break; | ||||
| 3525 | |||||
| 3526 | case bfd_link_hash_common: | ||||
| 3527 | old_bfd = h->root.u.c.p->section->owner; | ||||
| 3528 | old_alignment = h->root.u.c.p->alignment_power; | ||||
| 3529 | break; | ||||
| 3530 | } | ||||
| 3531 | |||||
| 3532 | if (elf_tdata (abfd)((abfd) -> tdata.elf_obj_data)->verdef != NULL((void*)0) | ||||
| 3533 | && ! override | ||||
| 3534 | && vernum > 1 | ||||
| 3535 | && definition) | ||||
| 3536 | h->verinfo.verdef = &elf_tdata (abfd)((abfd) -> tdata.elf_obj_data)->verdef[vernum - 1]; | ||||
| 3537 | } | ||||
| 3538 | |||||
| 3539 | if (! (_bfd_generic_link_add_one_symbol | ||||
| 3540 | (info, abfd, name, flags, sec, value, NULL((void*)0), FALSE0, collect, | ||||
| 3541 | (struct bfd_link_hash_entry **) sym_hash))) | ||||
| 3542 | goto error_free_vers; | ||||
| 3543 | |||||
| 3544 | h = *sym_hash; | ||||
| 3545 | while (h->root.type == bfd_link_hash_indirect | ||||
| 3546 | || h->root.type == bfd_link_hash_warning) | ||||
| 3547 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | ||||
| 3548 | *sym_hash = h; | ||||
| 3549 | |||||
| 3550 | new_weakdef = FALSE0; | ||||
| 3551 | if (dynamic | ||||
| 3552 | && definition | ||||
| 3553 | && (flags & BSF_WEAK0x80) != 0 | ||||
| 3554 | && ELF_ST_TYPE (isym->st_info)((isym->st_info) & 0xF) != STT_FUNC2 | ||||
| 3555 | && is_elf_hash_table (hash_table)(((struct bfd_link_hash_table *) (hash_table))->type == bfd_link_elf_hash_table ) | ||||
| 3556 | && h->weakdef == NULL((void*)0)) | ||||
| 3557 | { | ||||
| 3558 | /* Keep a list of all weak defined non function symbols from | ||||
| 3559 | a dynamic object, using the weakdef field. Later in this | ||||
| 3560 | function we will set the weakdef field to the correct | ||||
| 3561 | value. We only put non-function symbols from dynamic | ||||
| 3562 | objects on this list, because that happens to be the only | ||||
| 3563 | time we need to know the normal symbol corresponding to a | ||||
| 3564 | weak symbol, and the information is time consuming to | ||||
| 3565 | figure out. If the weakdef field is not already NULL, | ||||
| 3566 | then this symbol was already defined by some previous | ||||
| 3567 | dynamic object, and we will be using that previous | ||||
| 3568 | definition anyhow. */ | ||||
| 3569 | |||||
| 3570 | h->weakdef = weaks; | ||||
| 3571 | weaks = h; | ||||
| 3572 | new_weakdef = TRUE1; | ||||
| 3573 | } | ||||
| 3574 | |||||
| 3575 | /* Set the alignment of a common symbol. */ | ||||
| 3576 | if (isym->st_shndx == SHN_COMMON0xFFF2 | ||||
| 3577 | && h->root.type == bfd_link_hash_common) | ||||
| 3578 | { | ||||
| 3579 | unsigned int align; | ||||
| 3580 | |||||
| 3581 | align = bfd_log2 (isym->st_value); | ||||
| 3582 | if (align > old_alignment | ||||
| 3583 | /* Permit an alignment power of zero if an alignment of one | ||||
| 3584 | is specified and no other alignments have been specified. */ | ||||
| 3585 | || (isym->st_value == 1 && old_alignment == 0)) | ||||
| 3586 | h->root.u.c.p->alignment_power = align; | ||||
| 3587 | else | ||||
| 3588 | h->root.u.c.p->alignment_power = old_alignment; | ||||
| 3589 | } | ||||
| 3590 | |||||
| 3591 | if (is_elf_hash_table (hash_table)(((struct bfd_link_hash_table *) (hash_table))->type == bfd_link_elf_hash_table )) | ||||
| 3592 | { | ||||
| 3593 | int old_flags; | ||||
| 3594 | bfd_boolean dynsym; | ||||
| 3595 | int new_flag; | ||||
| 3596 | |||||
| 3597 | /* Check the alignment when a common symbol is involved. This | ||||
| 3598 | can change when a common symbol is overridden by a normal | ||||
| 3599 | definition or a common symbol is ignored due to the old | ||||
| 3600 | normal definition. We need to make sure the maximum | ||||
| 3601 | alignment is maintained. */ | ||||
| 3602 | if ((old_alignment || isym->st_shndx == SHN_COMMON0xFFF2) | ||||
| 3603 | && h->root.type != bfd_link_hash_common) | ||||
| 3604 | { | ||||
| 3605 | unsigned int common_align; | ||||
| 3606 | unsigned int normal_align; | ||||
| 3607 | unsigned int symbol_align; | ||||
| 3608 | bfd *normal_bfd; | ||||
| 3609 | bfd *common_bfd; | ||||
| 3610 | |||||
| 3611 | symbol_align = ffs (h->root.u.def.value) - 1; | ||||
| 3612 | if (h->root.u.def.section->owner != NULL((void*)0) | ||||
| 3613 | && (h->root.u.def.section->owner->flags & DYNAMIC0x40) == 0) | ||||
| 3614 | { | ||||
| 3615 | normal_align = h->root.u.def.section->alignment_power; | ||||
| 3616 | if (normal_align > symbol_align) | ||||
| 3617 | normal_align = symbol_align; | ||||
| 3618 | } | ||||
| 3619 | else | ||||
| 3620 | normal_align = symbol_align; | ||||
| 3621 | |||||
| 3622 | if (old_alignment) | ||||
| 3623 | { | ||||
| 3624 | common_align = old_alignment; | ||||
| 3625 | common_bfd = old_bfd; | ||||
| 3626 | normal_bfd = abfd; | ||||
| 3627 | } | ||||
| 3628 | else | ||||
| 3629 | { | ||||
| 3630 | common_align = bfd_log2 (isym->st_value); | ||||
| 3631 | common_bfd = abfd; | ||||
| 3632 | normal_bfd = old_bfd; | ||||
| 3633 | } | ||||
| 3634 | |||||
| 3635 | if (normal_align < common_align) | ||||
| 3636 | (*_bfd_error_handler) | ||||
| 3637 | (_("Warning: alignment %u of symbol `%s' in %s is smaller than %u in %s")("Warning: alignment %u of symbol `%s' in %s is smaller than %u in %s" ), | ||||
| 3638 | 1 << normal_align, | ||||
| 3639 | name, | ||||
| 3640 | bfd_archive_filename (normal_bfd), | ||||
| 3641 | 1 << common_align, | ||||
| 3642 | bfd_archive_filename (common_bfd)); | ||||
| 3643 | } | ||||
| 3644 | |||||
| 3645 | /* Remember the symbol size and type. */ | ||||
| 3646 | if (isym->st_size != 0 | ||||
| 3647 | && (definition || h->size == 0)) | ||||
| 3648 | { | ||||
| 3649 | if (h->size != 0 && h->size != isym->st_size && ! size_change_ok) | ||||
| 3650 | (*_bfd_error_handler) | ||||
| 3651 | (_("Warning: size of symbol `%s' changed from %lu in %s to %lu in %s")("Warning: size of symbol `%s' changed from %lu in %s to %lu in %s" ), | ||||
| 3652 | name, (unsigned long) h->size, | ||||
| 3653 | bfd_archive_filename (old_bfd), | ||||
| 3654 | (unsigned long) isym->st_size, | ||||
| 3655 | bfd_archive_filename (abfd)); | ||||
| 3656 | |||||
| 3657 | h->size = isym->st_size; | ||||
| 3658 | } | ||||
| 3659 | |||||
| 3660 | /* If this is a common symbol, then we always want H->SIZE | ||||
| 3661 | to be the size of the common symbol. The code just above | ||||
| 3662 | won't fix the size if a common symbol becomes larger. We | ||||
| 3663 | don't warn about a size change here, because that is | ||||
| 3664 | covered by --warn-common. */ | ||||
| 3665 | if (h->root.type == bfd_link_hash_common) | ||||
| 3666 | h->size = h->root.u.c.size; | ||||
| 3667 | |||||
| 3668 | if (ELF_ST_TYPE (isym->st_info)((isym->st_info) & 0xF) != STT_NOTYPE0 | ||||
| 3669 | && (definition || h->type == STT_NOTYPE0)) | ||||
| 3670 | { | ||||
| 3671 | if (h->type != STT_NOTYPE0 | ||||
| 3672 | && h->type != ELF_ST_TYPE (isym->st_info)((isym->st_info) & 0xF) | ||||
| 3673 | && ! type_change_ok) | ||||
| 3674 | (*_bfd_error_handler) | ||||
| 3675 | (_("Warning: type of symbol `%s' changed from %d to %d in %s")("Warning: type of symbol `%s' changed from %d to %d in %s"), | ||||
| 3676 | name, h->type, ELF_ST_TYPE (isym->st_info)((isym->st_info) & 0xF), | ||||
| 3677 | bfd_archive_filename (abfd)); | ||||
| 3678 | |||||
| 3679 | h->type = ELF_ST_TYPE (isym->st_info)((isym->st_info) & 0xF); | ||||
| 3680 | } | ||||
| 3681 | |||||
| 3682 | /* If st_other has a processor-specific meaning, specific | ||||
| 3683 | code might be needed here. We never merge the visibility | ||||
| 3684 | attribute with the one from a dynamic object. */ | ||||
| 3685 | if (bed->elf_backend_merge_symbol_attribute) | ||||
| 3686 | (*bed->elf_backend_merge_symbol_attribute) (h, isym, definition, | ||||
| 3687 | dynamic); | ||||
| 3688 | |||||
| 3689 | if (isym->st_other != 0 && !dynamic) | ||||
| 3690 | { | ||||
| 3691 | unsigned char hvis, symvis, other, nvis; | ||||
| 3692 | |||||
| 3693 | /* Take the balance of OTHER from the definition. */ | ||||
| 3694 | other = (definition ? isym->st_other : h->other); | ||||
| 3695 | other &= ~ ELF_ST_VISIBILITY (-1)((-1) & 0x3); | ||||
| 3696 | |||||
| 3697 | /* Combine visibilities, using the most constraining one. */ | ||||
| 3698 | hvis = ELF_ST_VISIBILITY (h->other)((h->other) & 0x3); | ||||
| 3699 | symvis = ELF_ST_VISIBILITY (isym->st_other)((isym->st_other) & 0x3); | ||||
| 3700 | if (! hvis) | ||||
| 3701 | nvis = symvis; | ||||
| 3702 | else if (! symvis) | ||||
| 3703 | nvis = hvis; | ||||
| 3704 | else | ||||
| 3705 | nvis = hvis < symvis ? hvis : symvis; | ||||
| 3706 | |||||
| 3707 | h->other = other | nvis; | ||||
| 3708 | } | ||||
| 3709 | |||||
| 3710 | /* Set a flag in the hash table entry indicating the type of | ||||
| 3711 | reference or definition we just found. Keep a count of | ||||
| 3712 | the number of dynamic symbols we find. A dynamic symbol | ||||
| 3713 | is one which is referenced or defined by both a regular | ||||
| 3714 | object and a shared object. */ | ||||
| 3715 | old_flags = h->elf_link_hash_flags; | ||||
| 3716 | dynsym = FALSE0; | ||||
| 3717 | if (! dynamic) | ||||
| 3718 | { | ||||
| 3719 | if (! definition) | ||||
| 3720 | { | ||||
| 3721 | new_flag = ELF_LINK_HASH_REF_REGULAR01; | ||||
| 3722 | if (bind != STB_WEAK2) | ||||
| 3723 | new_flag |= ELF_LINK_HASH_REF_REGULAR_NONWEAK020; | ||||
| 3724 | } | ||||
| 3725 | else | ||||
| 3726 | new_flag = ELF_LINK_HASH_DEF_REGULAR02; | ||||
| 3727 | if (! info->executable | ||||
| 3728 | || (old_flags & (ELF_LINK_HASH_DEF_DYNAMIC010 | ||||
| 3729 | | ELF_LINK_HASH_REF_DYNAMIC04)) != 0) | ||||
| 3730 | dynsym = TRUE1; | ||||
| 3731 | } | ||||
| 3732 | else | ||||
| 3733 | { | ||||
| 3734 | if (! definition) | ||||
| 3735 | new_flag = ELF_LINK_HASH_REF_DYNAMIC04; | ||||
| 3736 | else | ||||
| 3737 | new_flag = ELF_LINK_HASH_DEF_DYNAMIC010; | ||||
| 3738 | if ((old_flags & (ELF_LINK_HASH_DEF_REGULAR02 | ||||
| 3739 | | ELF_LINK_HASH_REF_REGULAR01)) != 0 | ||||
| 3740 | || (h->weakdef != NULL((void*)0) | ||||
| 3741 | && ! new_weakdef | ||||
| 3742 | && h->weakdef->dynindx != -1)) | ||||
| 3743 | dynsym = TRUE1; | ||||
| 3744 | } | ||||
| 3745 | |||||
| 3746 | h->elf_link_hash_flags |= new_flag; | ||||
| 3747 | |||||
| 3748 | /* Check to see if we need to add an indirect symbol for | ||||
| 3749 | the default name. */ | ||||
| 3750 | if (definition || h->root.type == bfd_link_hash_common) | ||||
| 3751 | if (!_bfd_elf_add_default_symbol (abfd, info, h, name, isym, | ||||
| 3752 | &sec, &value, &dynsym, | ||||
| 3753 | override)) | ||||
| 3754 | goto error_free_vers; | ||||
| 3755 | |||||
| 3756 | if (definition && !dynamic) | ||||
| 3757 | { | ||||
| 3758 | char *p = strchr (name, ELF_VER_CHR'@'); | ||||
| 3759 | if (p != NULL((void*)0) && p[1] != ELF_VER_CHR'@') | ||||
| 3760 | { | ||||
| 3761 | /* Queue non-default versions so that .symver x, x@FOO | ||||
| 3762 | aliases can be checked. */ | ||||
| 3763 | if (! nondeflt_vers) | ||||
| 3764 | { | ||||
| 3765 | amt = (isymend - isym + 1) | ||||
| 3766 | * sizeof (struct elf_link_hash_entry *); | ||||
| 3767 | nondeflt_vers = bfd_malloc (amt); | ||||
| 3768 | } | ||||
| 3769 | nondeflt_vers [nondeflt_vers_cnt++] = h; | ||||
| 3770 | } | ||||
| 3771 | } | ||||
| 3772 | |||||
| 3773 | if (dynsym && h->dynindx == -1) | ||||
| 3774 | { | ||||
| 3775 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | ||||
| 3776 | goto error_free_vers; | ||||
| 3777 | if (h->weakdef != NULL((void*)0) | ||||
| 3778 | && ! new_weakdef | ||||
| 3779 | && h->weakdef->dynindx == -1) | ||||
| 3780 | { | ||||
| 3781 | if (! bfd_elf_link_record_dynamic_symbol (info, h->weakdef)) | ||||
| 3782 | goto error_free_vers; | ||||
| 3783 | } | ||||
| 3784 | } | ||||
| 3785 | else if (dynsym && h->dynindx != -1) | ||||
| 3786 | /* If the symbol already has a dynamic index, but | ||||
| 3787 | visibility says it should not be visible, turn it into | ||||
| 3788 | a local symbol. */ | ||||
| 3789 | switch (ELF_ST_VISIBILITY (h->other)((h->other) & 0x3)) | ||||
| 3790 | { | ||||
| 3791 | case STV_INTERNAL1: | ||||
| 3792 | case STV_HIDDEN2: | ||||
| 3793 | (*bed->elf_backend_hide_symbol) (info, h, TRUE1); | ||||
| 3794 | dynsym = FALSE0; | ||||
| 3795 | break; | ||||
| 3796 | } | ||||
| 3797 | |||||
| 3798 | if (!add_needed | ||||
| 3799 | && definition | ||||
| 3800 | && dynsym | ||||
| 3801 | && (h->elf_link_hash_flags | ||||
| 3802 | & ELF_LINK_HASH_REF_REGULAR01) != 0) | ||||
| 3803 | { | ||||
| 3804 | int ret; | ||||
| 3805 | const char *soname = elf_dt_name (abfd)(((abfd) -> tdata.elf_obj_data) -> dt_name); | ||||
| 3806 | |||||
| 3807 | /* A symbol from a library loaded via DT_NEEDED of some | ||||
| 3808 | other library is referenced by a regular object. | ||||
| 3809 | Add a DT_NEEDED entry for it. */ | ||||
| 3810 | add_needed = TRUE1; | ||||
| 3811 | ret = elf_add_dt_needed_tag (info, soname, add_needed); | ||||
| 3812 | if (ret < 0) | ||||
| 3813 | goto error_free_vers; | ||||
| 3814 | |||||
| 3815 | BFD_ASSERT (ret == 0){ if (!(ret == 0)) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,3815); }; | ||||
| 3816 | } | ||||
| 3817 | } | ||||
| 3818 | } | ||||
| 3819 | |||||
| 3820 | /* Now that all the symbols from this input file are created, handle | ||||
| 3821 | .symver foo, foo@BAR such that any relocs against foo become foo@BAR. */ | ||||
| 3822 | if (nondeflt_vers != NULL((void*)0)) | ||||
| 3823 | { | ||||
| 3824 | bfd_size_type cnt, symidx; | ||||
| 3825 | |||||
| 3826 | for (cnt = 0; cnt < nondeflt_vers_cnt; ++cnt) | ||||
| 3827 | { | ||||
| 3828 | struct elf_link_hash_entry *h = nondeflt_vers[cnt], *hi; | ||||
| 3829 | char *shortname, *p; | ||||
| 3830 | |||||
| 3831 | p = strchr (h->root.root.string, ELF_VER_CHR'@'); | ||||
| 3832 | if (p == NULL((void*)0) | ||||
| 3833 | || (h->root.type != bfd_link_hash_defined | ||||
| 3834 | && h->root.type != bfd_link_hash_defweak)) | ||||
| 3835 | continue; | ||||
| 3836 | |||||
| 3837 | amt = p - h->root.root.string; | ||||
| 3838 | shortname = bfd_malloc (amt + 1); | ||||
| 3839 | memcpy (shortname, h->root.root.string, amt); | ||||
| 3840 | shortname[amt] = '\0'; | ||||
| 3841 | |||||
| 3842 | hi = (struct elf_link_hash_entry *) | ||||
| 3843 | bfd_link_hash_lookup (&hash_table->root, shortname, | ||||
| 3844 | FALSE0, FALSE0, FALSE0); | ||||
| 3845 | if (hi != NULL((void*)0) | ||||
| 3846 | && hi->root.type == h->root.type | ||||
| 3847 | && hi->root.u.def.value == h->root.u.def.value | ||||
| 3848 | && hi->root.u.def.section == h->root.u.def.section) | ||||
| 3849 | { | ||||
| 3850 | (*bed->elf_backend_hide_symbol) (info, hi, TRUE1); | ||||
| 3851 | hi->root.type = bfd_link_hash_indirect; | ||||
| 3852 | hi->root.u.i.link = (struct bfd_link_hash_entry *) h; | ||||
| 3853 | (*bed->elf_backend_copy_indirect_symbol) (bed, h, hi); | ||||
| 3854 | sym_hash = elf_sym_hashes (abfd)(((abfd) -> tdata.elf_obj_data) -> sym_hashes); | ||||
| 3855 | if (sym_hash) | ||||
| 3856 | for (symidx = 0; symidx < extsymcount; ++symidx) | ||||
| 3857 | if (sym_hash[symidx] == hi) | ||||
| 3858 | { | ||||
| 3859 | sym_hash[symidx] = h; | ||||
| 3860 | break; | ||||
| 3861 | } | ||||
| 3862 | } | ||||
| 3863 | free (shortname); | ||||
| 3864 | } | ||||
| 3865 | free (nondeflt_vers); | ||||
| 3866 | nondeflt_vers = NULL((void*)0); | ||||
| 3867 | } | ||||
| 3868 | |||||
| 3869 | if (extversym != NULL((void*)0)) | ||||
| 3870 | { | ||||
| 3871 | free (extversym); | ||||
| 3872 | extversym = NULL((void*)0); | ||||
| 3873 | } | ||||
| 3874 | |||||
| 3875 | if (isymbuf != NULL((void*)0)) | ||||
| 3876 | free (isymbuf); | ||||
| 3877 | isymbuf = NULL((void*)0); | ||||
| 3878 | |||||
| 3879 | /* Now set the weakdefs field correctly for all the weak defined | ||||
| 3880 | symbols we found. The only way to do this is to search all the | ||||
| 3881 | symbols. Since we only need the information for non functions in | ||||
| 3882 | dynamic objects, that's the only time we actually put anything on | ||||
| 3883 | the list WEAKS. We need this information so that if a regular | ||||
| 3884 | object refers to a symbol defined weakly in a dynamic object, the | ||||
| 3885 | real symbol in the dynamic object is also put in the dynamic | ||||
| 3886 | symbols; we also must arrange for both symbols to point to the | ||||
| 3887 | same memory location. We could handle the general case of symbol | ||||
| 3888 | aliasing, but a general symbol alias can only be generated in | ||||
| 3889 | assembler code, handling it correctly would be very time | ||||
| 3890 | consuming, and other ELF linkers don't handle general aliasing | ||||
| 3891 | either. */ | ||||
| 3892 | if (weaks != NULL((void*)0)) | ||||
| 3893 | { | ||||
| 3894 | struct elf_link_hash_entry **hpp; | ||||
| 3895 | struct elf_link_hash_entry **hppend; | ||||
| 3896 | struct elf_link_hash_entry **sorted_sym_hash; | ||||
| 3897 | struct elf_link_hash_entry *h; | ||||
| 3898 | size_t sym_count; | ||||
| 3899 | |||||
| 3900 | /* Since we have to search the whole symbol list for each weak | ||||
| 3901 | defined symbol, search time for N weak defined symbols will be | ||||
| 3902 | O(N^2). Binary search will cut it down to O(NlogN). */ | ||||
| 3903 | amt = extsymcount * sizeof (struct elf_link_hash_entry *); | ||||
| 3904 | sorted_sym_hash = bfd_malloc (amt); | ||||
| 3905 | if (sorted_sym_hash == NULL((void*)0)) | ||||
| 3906 | goto error_return; | ||||
| 3907 | sym_hash = sorted_sym_hash; | ||||
| 3908 | hpp = elf_sym_hashes (abfd)(((abfd) -> tdata.elf_obj_data) -> sym_hashes); | ||||
| 3909 | hppend = hpp + extsymcount; | ||||
| 3910 | sym_count = 0; | ||||
| 3911 | for (; hpp < hppend; hpp++) | ||||
| 3912 | { | ||||
| 3913 | h = *hpp; | ||||
| 3914 | if (h != NULL((void*)0) | ||||
| 3915 | && h->root.type == bfd_link_hash_defined | ||||
| 3916 | && h->type != STT_FUNC2) | ||||
| 3917 | { | ||||
| 3918 | *sym_hash = h; | ||||
| 3919 | sym_hash++; | ||||
| 3920 | sym_count++; | ||||
| 3921 | } | ||||
| 3922 | } | ||||
| 3923 | |||||
| 3924 | qsort (sorted_sym_hash, sym_count, | ||||
| 3925 | sizeof (struct elf_link_hash_entry *), | ||||
| 3926 | elf_sort_symbol); | ||||
| 3927 | |||||
| 3928 | while (weaks != NULL((void*)0)) | ||||
| 3929 | { | ||||
| 3930 | struct elf_link_hash_entry *hlook; | ||||
| 3931 | asection *slook; | ||||
| 3932 | bfd_vma vlook; | ||||
| 3933 | long ilook; | ||||
| 3934 | size_t i, j, idx; | ||||
| 3935 | |||||
| 3936 | hlook = weaks; | ||||
| 3937 | weaks = hlook->weakdef; | ||||
| 3938 | hlook->weakdef = NULL((void*)0); | ||||
| 3939 | |||||
| 3940 | BFD_ASSERT (hlook->root.type == bfd_link_hash_defined{ if (!(hlook->root.type == bfd_link_hash_defined || hlook ->root.type == bfd_link_hash_defweak || hlook->root.type == bfd_link_hash_common || hlook->root.type == bfd_link_hash_indirect )) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c",3943 ); } | ||||
| 3941 | || hlook->root.type == bfd_link_hash_defweak{ if (!(hlook->root.type == bfd_link_hash_defined || hlook ->root.type == bfd_link_hash_defweak || hlook->root.type == bfd_link_hash_common || hlook->root.type == bfd_link_hash_indirect )) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c",3943 ); } | ||||
| 3942 | || hlook->root.type == bfd_link_hash_common{ if (!(hlook->root.type == bfd_link_hash_defined || hlook ->root.type == bfd_link_hash_defweak || hlook->root.type == bfd_link_hash_common || hlook->root.type == bfd_link_hash_indirect )) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c",3943 ); } | ||||
| 3943 | || hlook->root.type == bfd_link_hash_indirect){ if (!(hlook->root.type == bfd_link_hash_defined || hlook ->root.type == bfd_link_hash_defweak || hlook->root.type == bfd_link_hash_common || hlook->root.type == bfd_link_hash_indirect )) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c",3943 ); }; | ||||
| 3944 | slook = hlook->root.u.def.section; | ||||
| 3945 | vlook = hlook->root.u.def.value; | ||||
| 3946 | |||||
| 3947 | ilook = -1; | ||||
| 3948 | i = 0; | ||||
| 3949 | j = sym_count; | ||||
| 3950 | while (i < j) | ||||
| 3951 | { | ||||
| 3952 | bfd_signed_vma vdiff; | ||||
| 3953 | idx = (i + j) / 2; | ||||
| 3954 | h = sorted_sym_hash [idx]; | ||||
| 3955 | vdiff = vlook - h->root.u.def.value; | ||||
| 3956 | if (vdiff < 0) | ||||
| 3957 | j = idx; | ||||
| 3958 | else if (vdiff > 0) | ||||
| 3959 | i = idx + 1; | ||||
| 3960 | else | ||||
| 3961 | { | ||||
| 3962 | long sdiff = slook - h->root.u.def.section; | ||||
| 3963 | if (sdiff < 0) | ||||
| 3964 | j = idx; | ||||
| 3965 | else if (sdiff > 0) | ||||
| 3966 | i = idx + 1; | ||||
| 3967 | else | ||||
| 3968 | { | ||||
| 3969 | ilook = idx; | ||||
| 3970 | break; | ||||
| 3971 | } | ||||
| 3972 | } | ||||
| 3973 | } | ||||
| 3974 | |||||
| 3975 | /* We didn't find a value/section match. */ | ||||
| 3976 | if (ilook == -1) | ||||
| 3977 | continue; | ||||
| 3978 | |||||
| 3979 | for (i = ilook; i < sym_count; i++) | ||||
| 3980 | { | ||||
| 3981 | h = sorted_sym_hash [i]; | ||||
| 3982 | |||||
| 3983 | /* Stop if value or section doesn't match. */ | ||||
| 3984 | if (h->root.u.def.value != vlook | ||||
| 3985 | || h->root.u.def.section != slook) | ||||
| 3986 | break; | ||||
| 3987 | else if (h != hlook) | ||||
| 3988 | { | ||||
| 3989 | hlook->weakdef = h; | ||||
| 3990 | |||||
| 3991 | /* If the weak definition is in the list of dynamic | ||||
| 3992 | symbols, make sure the real definition is put | ||||
| 3993 | there as well. */ | ||||
| 3994 | if (hlook->dynindx != -1 && h->dynindx == -1) | ||||
| 3995 | { | ||||
| 3996 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | ||||
| 3997 | goto error_return; | ||||
| 3998 | } | ||||
| 3999 | |||||
| 4000 | /* If the real definition is in the list of dynamic | ||||
| 4001 | symbols, make sure the weak definition is put | ||||
| 4002 | there as well. If we don't do this, then the | ||||
| 4003 | dynamic loader might not merge the entries for the | ||||
| 4004 | real definition and the weak definition. */ | ||||
| 4005 | if (h->dynindx != -1 && hlook->dynindx == -1) | ||||
| 4006 | { | ||||
| 4007 | if (! bfd_elf_link_record_dynamic_symbol (info, hlook)) | ||||
| 4008 | goto error_return; | ||||
| 4009 | } | ||||
| 4010 | break; | ||||
| 4011 | } | ||||
| 4012 | } | ||||
| 4013 | } | ||||
| 4014 | |||||
| 4015 | free (sorted_sym_hash); | ||||
| 4016 | } | ||||
| 4017 | |||||
| 4018 | /* If this object is the same format as the output object, and it is | ||||
| 4019 | not a shared library, then let the backend look through the | ||||
| 4020 | relocs. | ||||
| 4021 | |||||
| 4022 | This is required to build global offset table entries and to | ||||
| 4023 | arrange for dynamic relocs. It is not required for the | ||||
| 4024 | particular common case of linking non PIC code, even when linking | ||||
| 4025 | against shared libraries, but unfortunately there is no way of | ||||
| 4026 | knowing whether an object file has been compiled PIC or not. | ||||
| 4027 | Looking through the relocs is not particularly time consuming. | ||||
| 4028 | The problem is that we must either (1) keep the relocs in memory, | ||||
| 4029 | which causes the linker to require additional runtime memory or | ||||
| 4030 | (2) read the relocs twice from the input file, which wastes time. | ||||
| 4031 | This would be a good case for using mmap. | ||||
| 4032 | |||||
| 4033 | I have no idea how to handle linking PIC code into a file of a | ||||
| 4034 | different format. It probably can't be done. */ | ||||
| 4035 | check_relocs = get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data )->check_relocs; | ||||
| 4036 | if (! dynamic | ||||
| 4037 | && is_elf_hash_table (hash_table)(((struct bfd_link_hash_table *) (hash_table))->type == bfd_link_elf_hash_table ) | ||||
| 4038 | && hash_table->root.creator == abfd->xvec | ||||
| 4039 | && check_relocs != NULL((void*)0)) | ||||
| 4040 | { | ||||
| 4041 | asection *o; | ||||
| 4042 | |||||
| 4043 | for (o = abfd->sections; o != NULL((void*)0); o = o->next) | ||||
| 4044 | { | ||||
| 4045 | Elf_Internal_Rela *internal_relocs; | ||||
| 4046 | bfd_boolean ok; | ||||
| 4047 | |||||
| 4048 | if ((o->flags & SEC_RELOC0x004) == 0 | ||||
| 4049 | || o->reloc_count == 0 | ||||
| 4050 | || ((info->strip == strip_all || info->strip == strip_debugger) | ||||
| 4051 | && (o->flags & SEC_DEBUGGING0x10000) != 0) | ||||
| 4052 | || bfd_is_abs_section (o->output_section)((o->output_section) == ((asection *) &bfd_abs_section ))) | ||||
| 4053 | continue; | ||||
| 4054 | |||||
| 4055 | internal_relocs = _bfd_elf_link_read_relocs (abfd, o, NULL((void*)0), NULL((void*)0), | ||||
| 4056 | info->keep_memory); | ||||
| 4057 | if (internal_relocs == NULL((void*)0)) | ||||
| 4058 | goto error_return; | ||||
| 4059 | |||||
| 4060 | ok = (*check_relocs) (abfd, info, o, internal_relocs); | ||||
| 4061 | |||||
| 4062 | if (elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->relocs != internal_relocs) | ||||
| 4063 | free (internal_relocs); | ||||
| 4064 | |||||
| 4065 | if (! ok) | ||||
| 4066 | goto error_return; | ||||
| 4067 | } | ||||
| 4068 | } | ||||
| 4069 | |||||
| 4070 | /* If this is a non-traditional link, try to optimize the handling | ||||
| 4071 | of the .stab/.stabstr sections. */ | ||||
| 4072 | if (! dynamic | ||||
| 4073 | && ! info->traditional_format | ||||
| 4074 | && is_elf_hash_table (hash_table)(((struct bfd_link_hash_table *) (hash_table))->type == bfd_link_elf_hash_table ) | ||||
| 4075 | && (info->strip != strip_all && info->strip != strip_debugger)) | ||||
| 4076 | { | ||||
| 4077 | asection *stabstr; | ||||
| 4078 | |||||
| 4079 | stabstr = bfd_get_section_by_name (abfd, ".stabstr"); | ||||
| 4080 | if (stabstr != NULL((void*)0)) | ||||
| 4081 | { | ||||
| 4082 | bfd_size_type string_offset = 0; | ||||
| 4083 | asection *stab; | ||||
| 4084 | |||||
| 4085 | for (stab = abfd->sections; stab; stab = stab->next) | ||||
| 4086 | if (strncmp (".stab", stab->name, 5) == 0 | ||||
| 4087 | && (!stab->name[5] || | ||||
| 4088 | (stab->name[5] == '.' && ISDIGIT (stab->name[6])(_sch_istable[(stab->name[6]) & 0xff] & (unsigned short )(_sch_isdigit)))) | ||||
| 4089 | && (stab->flags & SEC_MERGE0x20000000) == 0 | ||||
| 4090 | && !bfd_is_abs_section (stab->output_section)((stab->output_section) == ((asection *) &bfd_abs_section ))) | ||||
| 4091 | { | ||||
| 4092 | struct bfd_elf_section_data *secdata; | ||||
| 4093 | |||||
| 4094 | secdata = elf_section_data (stab)((struct bfd_elf_section_data*)stab->used_by_bfd); | ||||
| 4095 | if (! _bfd_link_section_stabs (abfd, | ||||
| 4096 | & hash_table->stab_info, | ||||
| 4097 | stab, stabstr, | ||||
| 4098 | &secdata->sec_info, | ||||
| 4099 | &string_offset)) | ||||
| 4100 | goto error_return; | ||||
| 4101 | if (secdata->sec_info) | ||||
| 4102 | stab->sec_info_type = ELF_INFO_TYPE_STABS1; | ||||
| 4103 | } | ||||
| 4104 | } | ||||
| 4105 | } | ||||
| 4106 | |||||
| 4107 | if (! info->relocatable | ||||
| 4108 | && ! dynamic | ||||
| 4109 | && is_elf_hash_table (hash_table)(((struct bfd_link_hash_table *) (hash_table))->type == bfd_link_elf_hash_table )) | ||||
| 4110 | { | ||||
| 4111 | asection *s; | ||||
| 4112 | |||||
| 4113 | for (s = abfd->sections; s != NULL((void*)0); s = s->next) | ||||
| 4114 | if ((s->flags & SEC_MERGE0x20000000) != 0 | ||||
| 4115 | && !bfd_is_abs_section (s->output_section)((s->output_section) == ((asection *) &bfd_abs_section ))) | ||||
| 4116 | { | ||||
| 4117 | struct bfd_elf_section_data *secdata; | ||||
| 4118 | |||||
| 4119 | secdata = elf_section_data (s)((struct bfd_elf_section_data*)s->used_by_bfd); | ||||
| 4120 | if (! _bfd_merge_section (abfd, | ||||
| 4121 | & hash_table->merge_info, | ||||
| 4122 | s, &secdata->sec_info)) | ||||
| 4123 | goto error_return; | ||||
| 4124 | else if (secdata->sec_info) | ||||
| 4125 | s->sec_info_type = ELF_INFO_TYPE_MERGE2; | ||||
| 4126 | } | ||||
| 4127 | } | ||||
| 4128 | |||||
| 4129 | if (is_elf_hash_table (hash_table)(((struct bfd_link_hash_table *) (hash_table))->type == bfd_link_elf_hash_table )) | ||||
| 4130 | { | ||||
| 4131 | /* Add this bfd to the loaded list. */ | ||||
| 4132 | struct elf_link_loaded_list *n; | ||||
| 4133 | |||||
| 4134 | n = bfd_alloc (abfd, sizeof (struct elf_link_loaded_list)); | ||||
| 4135 | if (n == NULL((void*)0)) | ||||
| 4136 | goto error_return; | ||||
| 4137 | n->abfd = abfd; | ||||
| 4138 | n->next = hash_table->loaded; | ||||
| 4139 | hash_table->loaded = n; | ||||
| 4140 | } | ||||
| 4141 | |||||
| 4142 | return TRUE1; | ||||
| 4143 | |||||
| 4144 | error_free_vers: | ||||
| 4145 | if (nondeflt_vers != NULL((void*)0)) | ||||
| 4146 | free (nondeflt_vers); | ||||
| 4147 | if (extversym != NULL((void*)0)) | ||||
| 4148 | free (extversym); | ||||
| 4149 | error_free_sym: | ||||
| 4150 | if (isymbuf != NULL((void*)0)) | ||||
| 4151 | free (isymbuf); | ||||
| 4152 | error_return: | ||||
| 4153 | return FALSE0; | ||||
| 4154 | } | ||||
| 4155 | |||||
| 4156 | /* Add symbols from an ELF archive file to the linker hash table. We | ||||
| 4157 | don't use _bfd_generic_link_add_archive_symbols because of a | ||||
| 4158 | problem which arises on UnixWare. The UnixWare libc.so is an | ||||
| 4159 | archive which includes an entry libc.so.1 which defines a bunch of | ||||
| 4160 | symbols. The libc.so archive also includes a number of other | ||||
| 4161 | object files, which also define symbols, some of which are the same | ||||
| 4162 | as those defined in libc.so.1. Correct linking requires that we | ||||
| 4163 | consider each object file in turn, and include it if it defines any | ||||
| 4164 | symbols we need. _bfd_generic_link_add_archive_symbols does not do | ||||
| 4165 | this; it looks through the list of undefined symbols, and includes | ||||
| 4166 | any object file which defines them. When this algorithm is used on | ||||
| 4167 | UnixWare, it winds up pulling in libc.so.1 early and defining a | ||||
| 4168 | bunch of symbols. This means that some of the other objects in the | ||||
| 4169 | archive are not included in the link, which is incorrect since they | ||||
| 4170 | precede libc.so.1 in the archive. | ||||
| 4171 | |||||
| 4172 | Fortunately, ELF archive handling is simpler than that done by | ||||
| 4173 | _bfd_generic_link_add_archive_symbols, which has to allow for a.out | ||||
| 4174 | oddities. In ELF, if we find a symbol in the archive map, and the | ||||
| 4175 | symbol is currently undefined, we know that we must pull in that | ||||
| 4176 | object file. | ||||
| 4177 | |||||
| 4178 | Unfortunately, we do have to make multiple passes over the symbol | ||||
| 4179 | table until nothing further is resolved. */ | ||||
| 4180 | |||||
| 4181 | static bfd_boolean | ||||
| 4182 | elf_link_add_archive_symbols (bfd *abfd, struct bfd_link_info *info) | ||||
| 4183 | { | ||||
| 4184 | symindex c; | ||||
| 4185 | bfd_boolean *defined = NULL((void*)0); | ||||
| 4186 | bfd_boolean *included = NULL((void*)0); | ||||
| 4187 | carsym *symdefs; | ||||
| 4188 | bfd_boolean loop; | ||||
| 4189 | bfd_size_type amt; | ||||
| 4190 | |||||
| 4191 | if (! bfd_has_map (abfd)((abfd)->has_armap)) | ||||
| 4192 | { | ||||
| 4193 | /* An empty archive is a special case. */ | ||||
| 4194 | if (bfd_openr_next_archived_file (abfd, NULL((void*)0)) == NULL((void*)0)) | ||||
| 4195 | return TRUE1; | ||||
| 4196 | bfd_set_error (bfd_error_no_armap); | ||||
| 4197 | return FALSE0; | ||||
| 4198 | } | ||||
| 4199 | |||||
| 4200 | /* Keep track of all symbols we know to be already defined, and all | ||||
| 4201 | files we know to be already included. This is to speed up the | ||||
| 4202 | second and subsequent passes. */ | ||||
| 4203 | c = bfd_ardata (abfd)((abfd)->tdata.aout_ar_data)->symdef_count; | ||||
| 4204 | if (c == 0) | ||||
| 4205 | return TRUE1; | ||||
| 4206 | amt = c; | ||||
| 4207 | amt *= sizeof (bfd_boolean); | ||||
| 4208 | defined = bfd_zmalloc (amt); | ||||
| 4209 | included = bfd_zmalloc (amt); | ||||
| 4210 | if (defined == NULL((void*)0) || included == NULL((void*)0)) | ||||
| 4211 | goto error_return; | ||||
| 4212 | |||||
| 4213 | symdefs = bfd_ardata (abfd)((abfd)->tdata.aout_ar_data)->symdefs; | ||||
| 4214 | |||||
| 4215 | do | ||||
| 4216 | { | ||||
| 4217 | file_ptr last; | ||||
| 4218 | symindex i; | ||||
| 4219 | carsym *symdef; | ||||
| 4220 | carsym *symdefend; | ||||
| 4221 | |||||
| 4222 | loop = FALSE0; | ||||
| 4223 | last = -1; | ||||
| 4224 | |||||
| 4225 | symdef = symdefs; | ||||
| 4226 | symdefend = symdef + c; | ||||
| 4227 | for (i = 0; symdef < symdefend; symdef++, i++) | ||||
| 4228 | { | ||||
| 4229 | struct elf_link_hash_entry *h; | ||||
| 4230 | bfd *element; | ||||
| 4231 | struct bfd_link_hash_entry *undefs_tail; | ||||
| 4232 | symindex mark; | ||||
| 4233 | |||||
| 4234 | if (defined[i] || included[i]) | ||||
| 4235 | continue; | ||||
| 4236 | if (symdef->file_offset == last) | ||||
| 4237 | { | ||||
| 4238 | included[i] = TRUE1; | ||||
| 4239 | continue; | ||||
| 4240 | } | ||||
| 4241 | |||||
| 4242 | h = elf_link_hash_lookup (elf_hash_table (info), symdef->name,((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( symdef->name), (0), (0), (0))) | ||||
| 4243 | FALSE, FALSE, FALSE)((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( symdef->name), (0), (0), (0))); | ||||
| 4244 | |||||
| 4245 | if (h == NULL((void*)0)) | ||||
| 4246 | { | ||||
| 4247 | char *p, *copy; | ||||
| 4248 | size_t len, first; | ||||
| 4249 | |||||
| 4250 | /* If this is a default version (the name contains @@), | ||||
| 4251 | look up the symbol again with only one `@' as well | ||||
| 4252 | as without the version. The effect is that references | ||||
| 4253 | to the symbol with and without the version will be | ||||
| 4254 | matched by the default symbol in the archive. */ | ||||
| 4255 | |||||
| 4256 | p = strchr (symdef->name, ELF_VER_CHR'@'); | ||||
| 4257 | if (p == NULL((void*)0) || p[1] != ELF_VER_CHR'@') | ||||
| 4258 | continue; | ||||
| 4259 | |||||
| 4260 | /* First check with only one `@'. */ | ||||
| 4261 | len = strlen (symdef->name); | ||||
| 4262 | copy = bfd_alloc (abfd, len); | ||||
| 4263 | if (copy == NULL((void*)0)) | ||||
| 4264 | goto error_return; | ||||
| 4265 | first = p - symdef->name + 1; | ||||
| 4266 | memcpy (copy, symdef->name, first); | ||||
| 4267 | memcpy (copy + first, symdef->name + first + 1, len - first); | ||||
| 4268 | |||||
| 4269 | h = elf_link_hash_lookup (elf_hash_table (info), copy,((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( copy), (0), (0), (0))) | ||||
| 4270 | FALSE, FALSE, FALSE)((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( copy), (0), (0), (0))); | ||||
| 4271 | |||||
| 4272 | if (h == NULL((void*)0)) | ||||
| 4273 | { | ||||
| 4274 | /* We also need to check references to the symbol | ||||
| 4275 | without the version. */ | ||||
| 4276 | |||||
| 4277 | copy[first - 1] = '\0'; | ||||
| 4278 | h = elf_link_hash_lookup (elf_hash_table (info),((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( copy), (0), (0), (0))) | ||||
| 4279 | copy, FALSE, FALSE, FALSE)((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( copy), (0), (0), (0))); | ||||
| 4280 | } | ||||
| 4281 | |||||
| 4282 | bfd_release (abfd, copy); | ||||
| 4283 | } | ||||
| 4284 | |||||
| 4285 | if (h == NULL((void*)0)) | ||||
| 4286 | continue; | ||||
| 4287 | |||||
| 4288 | if (h->root.type == bfd_link_hash_common) | ||||
| 4289 | { | ||||
| 4290 | /* We currently have a common symbol. The archive map contains | ||||
| 4291 | a reference to this symbol, so we may want to include it. We | ||||
| 4292 | only want to include it however, if this archive element | ||||
| 4293 | contains a definition of the symbol, not just another common | ||||
| 4294 | declaration of it. | ||||
| 4295 | |||||
| 4296 | Unfortunately some archivers (including GNU ar) will put | ||||
| 4297 | declarations of common symbols into their archive maps, as | ||||
| 4298 | well as real definitions, so we cannot just go by the archive | ||||
| 4299 | map alone. Instead we must read in the element's symbol | ||||
| 4300 | table and check that to see what kind of symbol definition | ||||
| 4301 | this is. */ | ||||
| 4302 | if (! elf_link_is_defined_archive_symbol (abfd, symdef)) | ||||
| 4303 | continue; | ||||
| 4304 | } | ||||
| 4305 | else if (h->root.type != bfd_link_hash_undefined) | ||||
| 4306 | { | ||||
| 4307 | if (h->root.type != bfd_link_hash_undefweak) | ||||
| 4308 | defined[i] = TRUE1; | ||||
| 4309 | continue; | ||||
| 4310 | } | ||||
| 4311 | |||||
| 4312 | /* We need to include this archive member. */ | ||||
| 4313 | element = _bfd_get_elt_at_filepos (abfd, symdef->file_offset); | ||||
| 4314 | if (element == NULL((void*)0)) | ||||
| 4315 | goto error_return; | ||||
| 4316 | |||||
| 4317 | if (! bfd_check_format (element, bfd_object)) | ||||
| 4318 | goto error_return; | ||||
| 4319 | |||||
| 4320 | /* Doublecheck that we have not included this object | ||||
| 4321 | already--it should be impossible, but there may be | ||||
| 4322 | something wrong with the archive. */ | ||||
| 4323 | if (element->archive_pass != 0) | ||||
| 4324 | { | ||||
| 4325 | bfd_set_error (bfd_error_bad_value); | ||||
| 4326 | goto error_return; | ||||
| 4327 | } | ||||
| 4328 | element->archive_pass = 1; | ||||
| 4329 | |||||
| 4330 | undefs_tail = info->hash->undefs_tail; | ||||
| 4331 | |||||
| 4332 | if (! (*info->callbacks->add_archive_element) (info, element, | ||||
| 4333 | symdef->name)) | ||||
| 4334 | goto error_return; | ||||
| 4335 | if (! bfd_link_add_symbols (element, info)((*((element)->xvec->_bfd_link_add_symbols)) (element, info ))) | ||||
| 4336 | goto error_return; | ||||
| 4337 | |||||
| 4338 | /* If there are any new undefined symbols, we need to make | ||||
| 4339 | another pass through the archive in order to see whether | ||||
| 4340 | they can be defined. FIXME: This isn't perfect, because | ||||
| 4341 | common symbols wind up on undefs_tail and because an | ||||
| 4342 | undefined symbol which is defined later on in this pass | ||||
| 4343 | does not require another pass. This isn't a bug, but it | ||||
| 4344 | does make the code less efficient than it could be. */ | ||||
| 4345 | if (undefs_tail != info->hash->undefs_tail) | ||||
| 4346 | loop = TRUE1; | ||||
| 4347 | |||||
| 4348 | /* Look backward to mark all symbols from this object file | ||||
| 4349 | which we have already seen in this pass. */ | ||||
| 4350 | mark = i; | ||||
| 4351 | do | ||||
| 4352 | { | ||||
| 4353 | included[mark] = TRUE1; | ||||
| 4354 | if (mark == 0) | ||||
| 4355 | break; | ||||
| 4356 | --mark; | ||||
| 4357 | } | ||||
| 4358 | while (symdefs[mark].file_offset == symdef->file_offset); | ||||
| 4359 | |||||
| 4360 | /* We mark subsequent symbols from this object file as we go | ||||
| 4361 | on through the loop. */ | ||||
| 4362 | last = symdef->file_offset; | ||||
| 4363 | } | ||||
| 4364 | } | ||||
| 4365 | while (loop); | ||||
| 4366 | |||||
| 4367 | free (defined); | ||||
| 4368 | free (included); | ||||
| 4369 | |||||
| 4370 | return TRUE1; | ||||
| 4371 | |||||
| 4372 | error_return: | ||||
| 4373 | if (defined != NULL((void*)0)) | ||||
| 4374 | free (defined); | ||||
| 4375 | if (included != NULL((void*)0)) | ||||
| 4376 | free (included); | ||||
| 4377 | return FALSE0; | ||||
| 4378 | } | ||||
| 4379 | |||||
| 4380 | /* Given an ELF BFD, add symbols to the global hash table as | ||||
| 4381 | appropriate. */ | ||||
| 4382 | |||||
| 4383 | bfd_boolean | ||||
| 4384 | bfd_elf_link_add_symbols (bfd *abfd, struct bfd_link_info *info) | ||||
| 4385 | { | ||||
| 4386 | switch (bfd_get_format (abfd)((abfd)->format)) | ||||
| 4387 | { | ||||
| 4388 | case bfd_object: | ||||
| 4389 | return elf_link_add_object_symbols (abfd, info); | ||||
| 4390 | case bfd_archive: | ||||
| 4391 | return elf_link_add_archive_symbols (abfd, info); | ||||
| 4392 | default: | ||||
| 4393 | bfd_set_error (bfd_error_wrong_format); | ||||
| 4394 | return FALSE0; | ||||
| 4395 | } | ||||
| 4396 | } | ||||
| 4397 | |||||
| 4398 | /* This function will be called though elf_link_hash_traverse to store | ||||
| 4399 | all hash value of the exported symbols in an array. */ | ||||
| 4400 | |||||
| 4401 | static bfd_boolean | ||||
| 4402 | elf_collect_hash_codes (struct elf_link_hash_entry *h, void *data) | ||||
| 4403 | { | ||||
| 4404 | unsigned long **valuep = data; | ||||
| 4405 | const char *name; | ||||
| 4406 | char *p; | ||||
| 4407 | unsigned long ha; | ||||
| 4408 | char *alc = NULL((void*)0); | ||||
| 4409 | |||||
| 4410 | if (h->root.type == bfd_link_hash_warning) | ||||
| 4411 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | ||||
| 4412 | |||||
| 4413 | /* Ignore indirect symbols. These are added by the versioning code. */ | ||||
| 4414 | if (h->dynindx == -1) | ||||
| 4415 | return TRUE1; | ||||
| 4416 | |||||
| 4417 | name = h->root.root.string; | ||||
| 4418 | p = strchr (name, ELF_VER_CHR'@'); | ||||
| 4419 | if (p != NULL((void*)0)) | ||||
| 4420 | { | ||||
| 4421 | alc = bfd_malloc (p - name + 1); | ||||
| 4422 | memcpy (alc, name, p - name); | ||||
| 4423 | alc[p - name] = '\0'; | ||||
| 4424 | name = alc; | ||||
| 4425 | } | ||||
| 4426 | |||||
| 4427 | /* Compute the hash value. */ | ||||
| 4428 | ha = bfd_elf_hash (name); | ||||
| 4429 | |||||
| 4430 | /* Store the found hash value in the array given as the argument. */ | ||||
| 4431 | *(*valuep)++ = ha; | ||||
| 4432 | |||||
| 4433 | /* And store it in the struct so that we can put it in the hash table | ||||
| 4434 | later. */ | ||||
| 4435 | h->elf_hash_value = ha; | ||||
| 4436 | |||||
| 4437 | if (alc != NULL((void*)0)) | ||||
| 4438 | free (alc); | ||||
| 4439 | |||||
| 4440 | return TRUE1; | ||||
| 4441 | } | ||||
| 4442 | |||||
| 4443 | /* Array used to determine the number of hash table buckets to use | ||||
| 4444 | based on the number of symbols there are. If there are fewer than | ||||
| 4445 | 3 symbols we use 1 bucket, fewer than 17 symbols we use 3 buckets, | ||||
| 4446 | fewer than 37 we use 17 buckets, and so forth. We never use more | ||||
| 4447 | than 32771 buckets. */ | ||||
| 4448 | |||||
| 4449 | static const size_t elf_buckets[] = | ||||
| 4450 | { | ||||
| 4451 | 1, 3, 17, 37, 67, 97, 131, 197, 263, 521, 1031, 2053, 4099, 8209, | ||||
| 4452 | 16411, 32771, 0 | ||||
| 4453 | }; | ||||
| 4454 | |||||
| 4455 | /* Compute bucket count for hashing table. We do not use a static set | ||||
| 4456 | of possible tables sizes anymore. Instead we determine for all | ||||
| 4457 | possible reasonable sizes of the table the outcome (i.e., the | ||||
| 4458 | number of collisions etc) and choose the best solution. The | ||||
| 4459 | weighting functions are not too simple to allow the table to grow | ||||
| 4460 | without bounds. Instead one of the weighting factors is the size. | ||||
| 4461 | Therefore the result is always a good payoff between few collisions | ||||
| 4462 | (= short chain lengths) and table size. */ | ||||
| 4463 | static size_t | ||||
| 4464 | compute_bucket_count (struct bfd_link_info *info) | ||||
| 4465 | { | ||||
| 4466 | size_t dynsymcount = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynsymcount; | ||||
| 4467 | size_t best_size = 0; | ||||
| 4468 | unsigned long int *hashcodes; | ||||
| 4469 | unsigned long int *hashcodesp; | ||||
| 4470 | unsigned long int i; | ||||
| 4471 | bfd_size_type amt; | ||||
| 4472 | |||||
| 4473 | /* Compute the hash values for all exported symbols. At the same | ||||
| 4474 | time store the values in an array so that we could use them for | ||||
| 4475 | optimizations. */ | ||||
| 4476 | amt = dynsymcount; | ||||
| 4477 | amt *= sizeof (unsigned long int); | ||||
| 4478 | hashcodes = bfd_malloc (amt); | ||||
| 4479 | if (hashcodes == NULL((void*)0)) | ||||
| 4480 | return 0; | ||||
| 4481 | hashcodesp = hashcodes; | ||||
| 4482 | |||||
| 4483 | /* Put all hash values in HASHCODES. */ | ||||
| 4484 | elf_link_hash_traverse (elf_hash_table (info),(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (elf_collect_hash_codes), (&hashcodesp))) | ||||
| 4485 | elf_collect_hash_codes, &hashcodesp)(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (elf_collect_hash_codes), (&hashcodesp))); | ||||
| 4486 | |||||
| 4487 | /* We have a problem here. The following code to optimize the table | ||||
| 4488 | size requires an integer type with more the 32 bits. If | ||||
| 4489 | BFD_HOST_U_64_BIT is set we know about such a type. */ | ||||
| 4490 | #ifdef BFD_HOST_U_64_BITunsigned long | ||||
| 4491 | if (info->optimize) | ||||
| 4492 | { | ||||
| 4493 | unsigned long int nsyms = hashcodesp - hashcodes; | ||||
| 4494 | size_t minsize; | ||||
| 4495 | size_t maxsize; | ||||
| 4496 | BFD_HOST_U_64_BITunsigned long best_chlen = ~((BFD_HOST_U_64_BITunsigned long) 0); | ||||
| 4497 | unsigned long int *counts ; | ||||
| 4498 | bfd *dynobj = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynobj; | ||||
| 4499 | const struct elf_backend_data *bed = get_elf_backend_data (dynobj)((const struct elf_backend_data *) (dynobj)->xvec->backend_data ); | ||||
| 4500 | |||||
| 4501 | /* Possible optimization parameters: if we have NSYMS symbols we say | ||||
| 4502 | that the hashing table must at least have NSYMS/4 and at most | ||||
| 4503 | 2*NSYMS buckets. */ | ||||
| 4504 | minsize = nsyms / 4; | ||||
| 4505 | if (minsize == 0) | ||||
| 4506 | minsize = 1; | ||||
| 4507 | best_size = maxsize = nsyms * 2; | ||||
| 4508 | |||||
| 4509 | /* Create array where we count the collisions in. We must use bfd_malloc | ||||
| 4510 | since the size could be large. */ | ||||
| 4511 | amt = maxsize; | ||||
| 4512 | amt *= sizeof (unsigned long int); | ||||
| 4513 | counts = bfd_malloc (amt); | ||||
| 4514 | if (counts == NULL((void*)0)) | ||||
| 4515 | { | ||||
| 4516 | free (hashcodes); | ||||
| 4517 | return 0; | ||||
| 4518 | } | ||||
| 4519 | |||||
| 4520 | /* Compute the "optimal" size for the hash table. The criteria is a | ||||
| 4521 | minimal chain length. The minor criteria is (of course) the size | ||||
| 4522 | of the table. */ | ||||
| 4523 | for (i = minsize; i < maxsize; ++i) | ||||
| 4524 | { | ||||
| 4525 | /* Walk through the array of hashcodes and count the collisions. */ | ||||
| 4526 | BFD_HOST_U_64_BITunsigned long max; | ||||
| 4527 | unsigned long int j; | ||||
| 4528 | unsigned long int fact; | ||||
| 4529 | |||||
| 4530 | memset (counts, '\0', i * sizeof (unsigned long int)); | ||||
| 4531 | |||||
| 4532 | /* Determine how often each hash bucket is used. */ | ||||
| 4533 | for (j = 0; j < nsyms; ++j) | ||||
| 4534 | ++counts[hashcodes[j] % i]; | ||||
| 4535 | |||||
| 4536 | /* For the weight function we need some information about the | ||||
| 4537 | pagesize on the target. This is information need not be 100% | ||||
| 4538 | accurate. Since this information is not available (so far) we | ||||
| 4539 | define it here to a reasonable default value. If it is crucial | ||||
| 4540 | to have a better value some day simply define this value. */ | ||||
| 4541 | # ifndef BFD_TARGET_PAGESIZE(4096) | ||||
| 4542 | # define BFD_TARGET_PAGESIZE(4096) (4096) | ||||
| 4543 | # endif | ||||
| 4544 | |||||
| 4545 | /* We in any case need 2 + NSYMS entries for the size values and | ||||
| 4546 | the chains. */ | ||||
| 4547 | max = (2 + nsyms) * (bed->s->arch_size / 8); | ||||
| 4548 | |||||
| 4549 | # if 1 | ||||
| 4550 | /* Variant 1: optimize for short chains. We add the squares | ||||
| 4551 | of all the chain lengths (which favors many small chain | ||||
| 4552 | over a few long chains). */ | ||||
| 4553 | for (j = 0; j < i; ++j) | ||||
| 4554 | max += counts[j] * counts[j]; | ||||
| 4555 | |||||
| 4556 | /* This adds penalties for the overall size of the table. */ | ||||
| 4557 | fact = i / (BFD_TARGET_PAGESIZE(4096) / (bed->s->arch_size / 8)) + 1; | ||||
| 4558 | max *= fact * fact; | ||||
| 4559 | # else | ||||
| 4560 | /* Variant 2: Optimize a lot more for small table. Here we | ||||
| 4561 | also add squares of the size but we also add penalties for | ||||
| 4562 | empty slots (the +1 term). */ | ||||
| 4563 | for (j = 0; j < i; ++j) | ||||
| 4564 | max += (1 + counts[j]) * (1 + counts[j]); | ||||
| 4565 | |||||
| 4566 | /* The overall size of the table is considered, but not as | ||||
| 4567 | strong as in variant 1, where it is squared. */ | ||||
| 4568 | fact = i / (BFD_TARGET_PAGESIZE(4096) / (bed->s->arch_size / 8)) + 1; | ||||
| 4569 | max *= fact; | ||||
| 4570 | # endif | ||||
| 4571 | |||||
| 4572 | /* Compare with current best results. */ | ||||
| 4573 | if (max < best_chlen) | ||||
| 4574 | { | ||||
| 4575 | best_chlen = max; | ||||
| 4576 | best_size = i; | ||||
| 4577 | } | ||||
| 4578 | } | ||||
| 4579 | |||||
| 4580 | free (counts); | ||||
| 4581 | } | ||||
| 4582 | else | ||||
| 4583 | #endif /* defined (BFD_HOST_U_64_BIT) */ | ||||
| 4584 | { | ||||
| 4585 | /* This is the fallback solution if no 64bit type is available or if we | ||||
| 4586 | are not supposed to spend much time on optimizations. We select the | ||||
| 4587 | bucket count using a fixed set of numbers. */ | ||||
| 4588 | for (i = 0; elf_buckets[i] != 0; i++) | ||||
| 4589 | { | ||||
| 4590 | best_size = elf_buckets[i]; | ||||
| 4591 | if (dynsymcount < elf_buckets[i + 1]) | ||||
| 4592 | break; | ||||
| 4593 | } | ||||
| 4594 | } | ||||
| 4595 | |||||
| 4596 | /* Free the arrays we needed. */ | ||||
| 4597 | free (hashcodes); | ||||
| 4598 | |||||
| 4599 | return best_size; | ||||
| 4600 | } | ||||
| 4601 | |||||
| 4602 | /* Set up the sizes and contents of the ELF dynamic sections. This is | ||||
| 4603 | called by the ELF linker emulation before_allocation routine. We | ||||
| 4604 | must set the sizes of the sections before the linker sets the | ||||
| 4605 | addresses of the various sections. */ | ||||
| 4606 | |||||
| 4607 | bfd_boolean | ||||
| 4608 | bfd_elf_size_dynamic_sections (bfd *output_bfd, | ||||
| 4609 | const char *soname, | ||||
| 4610 | const char *rpath, | ||||
| 4611 | const char *filter_shlib, | ||||
| 4612 | const char * const *auxiliary_filters, | ||||
| 4613 | struct bfd_link_info *info, | ||||
| 4614 | asection **sinterpptr, | ||||
| 4615 | struct bfd_elf_version_tree *verdefs) | ||||
| 4616 | { | ||||
| 4617 | bfd_size_type soname_indx; | ||||
| 4618 | bfd *dynobj; | ||||
| 4619 | const struct elf_backend_data *bed; | ||||
| 4620 | struct elf_assign_sym_version_info asvinfo; | ||||
| 4621 | |||||
| 4622 | *sinterpptr = NULL((void*)0); | ||||
| 4623 | |||||
| 4624 | soname_indx = (bfd_size_type) -1; | ||||
| 4625 | |||||
| 4626 | if (!is_elf_hash_table (info->hash)(((struct bfd_link_hash_table *) (info->hash))->type == bfd_link_elf_hash_table)) | ||||
| 4627 | return TRUE1; | ||||
| 4628 | |||||
| 4629 | elf_tdata (output_bfd)((output_bfd) -> tdata.elf_obj_data)->executable = info->executable; | ||||
| 4630 | if (info->execstack) | ||||
| 4631 | elf_tdata (output_bfd)((output_bfd) -> tdata.elf_obj_data)->stack_flags = PF_R(1 << 2) | PF_W(1 << 1) | PF_X(1 << 0); | ||||
| 4632 | else if (info->noexecstack) | ||||
| 4633 | elf_tdata (output_bfd)((output_bfd) -> tdata.elf_obj_data)->stack_flags = PF_R(1 << 2) | PF_W(1 << 1); | ||||
| 4634 | else | ||||
| 4635 | { | ||||
| 4636 | bfd *inputobj; | ||||
| 4637 | asection *notesec = NULL((void*)0); | ||||
| 4638 | int exec = 0; | ||||
| 4639 | |||||
| 4640 | for (inputobj = info->input_bfds; | ||||
| 4641 | inputobj; | ||||
| 4642 | inputobj = inputobj->link_next) | ||||
| 4643 | { | ||||
| 4644 | asection *s; | ||||
| 4645 | |||||
| 4646 | if (inputobj->flags & DYNAMIC0x40) | ||||
| 4647 | continue; | ||||
| 4648 | s = bfd_get_section_by_name (inputobj, ".note.GNU-stack"); | ||||
| 4649 | if (s) | ||||
| 4650 | { | ||||
| 4651 | if (s->flags & SEC_CODE0x020) | ||||
| 4652 | exec = PF_X(1 << 0); | ||||
| 4653 | notesec = s; | ||||
| 4654 | } | ||||
| 4655 | else | ||||
| 4656 | exec = PF_X(1 << 0); | ||||
| 4657 | } | ||||
| 4658 | if (notesec) | ||||
| 4659 | { | ||||
| 4660 | elf_tdata (output_bfd)((output_bfd) -> tdata.elf_obj_data)->stack_flags = PF_R(1 << 2) | PF_W(1 << 1) | exec; | ||||
| 4661 | if (exec && info->relocatable | ||||
| 4662 | && notesec->output_section != bfd_abs_section_ptr((asection *) &bfd_abs_section)) | ||||
| 4663 | notesec->output_section->flags |= SEC_CODE0x020; | ||||
| 4664 | } | ||||
| 4665 | } | ||||
| 4666 | |||||
| 4667 | /* Any syms created from now on start with -1 in | ||||
| 4668 | got.refcount/offset and plt.refcount/offset. */ | ||||
| 4669 | elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->init_refcount = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->init_offset; | ||||
| 4670 | |||||
| 4671 | /* The backend may have to create some sections regardless of whether | ||||
| 4672 | we're dynamic or not. */ | ||||
| 4673 | bed = get_elf_backend_data (output_bfd)((const struct elf_backend_data *) (output_bfd)->xvec-> backend_data); | ||||
| 4674 | if (bed->elf_backend_always_size_sections | ||||
| 4675 | && ! (*bed->elf_backend_always_size_sections) (output_bfd, info)) | ||||
| 4676 | return FALSE0; | ||||
| 4677 | |||||
| 4678 | dynobj = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynobj; | ||||
| 4679 | |||||
| 4680 | /* If there were no dynamic objects in the link, there is nothing to | ||||
| 4681 | do here. */ | ||||
| 4682 | if (dynobj == NULL((void*)0)) | ||||
| 4683 | return TRUE1; | ||||
| 4684 | |||||
| 4685 | if (! _bfd_elf_maybe_strip_eh_frame_hdr (info)) | ||||
| 4686 | return FALSE0; | ||||
| 4687 | |||||
| 4688 | if (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynamic_sections_created) | ||||
| 4689 | { | ||||
| 4690 | struct elf_info_failed eif; | ||||
| 4691 | struct elf_link_hash_entry *h; | ||||
| 4692 | asection *dynstr; | ||||
| 4693 | struct bfd_elf_version_tree *t; | ||||
| 4694 | struct bfd_elf_version_expr *d; | ||||
| 4695 | bfd_boolean all_defined; | ||||
| 4696 | |||||
| 4697 | *sinterpptr = bfd_get_section_by_name (dynobj, ".interp"); | ||||
| 4698 | |||||
| 4699 | if (soname != NULL((void*)0)) | ||||
| 4700 | { | ||||
| 4701 | soname_indx = _bfd_elf_strtab_add (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynstr, | ||||
| 4702 | soname, TRUE1); | ||||
| 4703 | if (soname_indx == (bfd_size_type) -1 | ||||
| 4704 | || !_bfd_elf_add_dynamic_entry (info, DT_SONAME14, soname_indx)) | ||||
| 4705 | return FALSE0; | ||||
| 4706 | } | ||||
| 4707 | |||||
| 4708 | if (info->symbolic) | ||||
| 4709 | { | ||||
| 4710 | if (!_bfd_elf_add_dynamic_entry (info, DT_SYMBOLIC16, 0)) | ||||
| 4711 | return FALSE0; | ||||
| 4712 | info->flags |= DF_SYMBOLIC(1 << 1); | ||||
| 4713 | } | ||||
| 4714 | |||||
| 4715 | if (rpath != NULL((void*)0)) | ||||
| 4716 | { | ||||
| 4717 | bfd_size_type indx; | ||||
| 4718 | |||||
| 4719 | indx = _bfd_elf_strtab_add (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynstr, rpath, | ||||
| 4720 | TRUE1); | ||||
| 4721 | if (indx == (bfd_size_type) -1 | ||||
| 4722 | || !_bfd_elf_add_dynamic_entry (info, DT_RPATH15, indx)) | ||||
| 4723 | return FALSE0; | ||||
| 4724 | |||||
| 4725 | if (info->new_dtags) | ||||
| 4726 | { | ||||
| 4727 | _bfd_elf_strtab_addref (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynstr, indx); | ||||
| 4728 | if (!_bfd_elf_add_dynamic_entry (info, DT_RUNPATH29, indx)) | ||||
| 4729 | return FALSE0; | ||||
| 4730 | } | ||||
| 4731 | } | ||||
| 4732 | |||||
| 4733 | if (filter_shlib != NULL((void*)0)) | ||||
| 4734 | { | ||||
| 4735 | bfd_size_type indx; | ||||
| 4736 | |||||
| 4737 | indx = _bfd_elf_strtab_add (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynstr, | ||||
| 4738 | filter_shlib, TRUE1); | ||||
| 4739 | if (indx == (bfd_size_type) -1 | ||||
| 4740 | || !_bfd_elf_add_dynamic_entry (info, DT_FILTER0x7fffffff, indx)) | ||||
| 4741 | return FALSE0; | ||||
| 4742 | } | ||||
| 4743 | |||||
| 4744 | if (auxiliary_filters != NULL((void*)0)) | ||||
| 4745 | { | ||||
| 4746 | const char * const *p; | ||||
| 4747 | |||||
| 4748 | for (p = auxiliary_filters; *p != NULL((void*)0); p++) | ||||
| 4749 | { | ||||
| 4750 | bfd_size_type indx; | ||||
| 4751 | |||||
| 4752 | indx = _bfd_elf_strtab_add (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynstr, | ||||
| 4753 | *p, TRUE1); | ||||
| 4754 | if (indx == (bfd_size_type) -1 | ||||
| 4755 | || !_bfd_elf_add_dynamic_entry (info, DT_AUXILIARY0x7ffffffd, indx)) | ||||
| 4756 | return FALSE0; | ||||
| 4757 | } | ||||
| 4758 | } | ||||
| 4759 | |||||
| 4760 | eif.info = info; | ||||
| 4761 | eif.verdefs = verdefs; | ||||
| 4762 | eif.failed = FALSE0; | ||||
| 4763 | |||||
| 4764 | /* If we are supposed to export all symbols into the dynamic symbol | ||||
| 4765 | table (this is not the normal case), then do so. */ | ||||
| 4766 | if (info->export_dynamic) | ||||
| 4767 | { | ||||
| 4768 | elf_link_hash_traverse (elf_hash_table (info),(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (_bfd_elf_export_symbol), (&eif))) | ||||
| 4769 | _bfd_elf_export_symbol,(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (_bfd_elf_export_symbol), (&eif))) | ||||
| 4770 | &eif)(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (_bfd_elf_export_symbol), (&eif))); | ||||
| 4771 | if (eif.failed) | ||||
| 4772 | return FALSE0; | ||||
| 4773 | } | ||||
| 4774 | |||||
| 4775 | /* Make all global versions with definition. */ | ||||
| 4776 | for (t = verdefs; t != NULL((void*)0); t = t->next) | ||||
| 4777 | for (d = t->globals.list; d != NULL((void*)0); d = d->next) | ||||
| 4778 | if (!d->symver && d->symbol) | ||||
| 4779 | { | ||||
| 4780 | const char *verstr, *name; | ||||
| 4781 | size_t namelen, verlen, newlen; | ||||
| 4782 | char *newname, *p; | ||||
| 4783 | struct elf_link_hash_entry *newh; | ||||
| 4784 | |||||
| 4785 | name = d->symbol; | ||||
| 4786 | namelen = strlen (name); | ||||
| 4787 | verstr = t->name; | ||||
| 4788 | verlen = strlen (verstr); | ||||
| 4789 | newlen = namelen + verlen + 3; | ||||
| 4790 | |||||
| 4791 | newname = bfd_malloc (newlen); | ||||
| 4792 | if (newname == NULL((void*)0)) | ||||
| 4793 | return FALSE0; | ||||
| 4794 | memcpy (newname, name, namelen); | ||||
| 4795 | |||||
| 4796 | /* Check the hidden versioned definition. */ | ||||
| 4797 | p = newname + namelen; | ||||
| 4798 | *p++ = ELF_VER_CHR'@'; | ||||
| 4799 | memcpy (p, verstr, verlen + 1); | ||||
| 4800 | newh = elf_link_hash_lookup (elf_hash_table (info),((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( newname), (0), (0), (0))) | ||||
| 4801 | newname, FALSE, FALSE,((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( newname), (0), (0), (0))) | ||||
| 4802 | FALSE)((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( newname), (0), (0), (0))); | ||||
| 4803 | if (newh == NULL((void*)0) | ||||
| 4804 | || (newh->root.type != bfd_link_hash_defined | ||||
| 4805 | && newh->root.type != bfd_link_hash_defweak)) | ||||
| 4806 | { | ||||
| 4807 | /* Check the default versioned definition. */ | ||||
| 4808 | *p++ = ELF_VER_CHR'@'; | ||||
| 4809 | memcpy (p, verstr, verlen + 1); | ||||
| 4810 | newh = elf_link_hash_lookup (elf_hash_table (info),((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( newname), (0), (0), (0))) | ||||
| 4811 | newname, FALSE, FALSE,((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( newname), (0), (0), (0))) | ||||
| 4812 | FALSE)((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( newname), (0), (0), (0))); | ||||
| 4813 | } | ||||
| 4814 | free (newname); | ||||
| 4815 | |||||
| 4816 | /* Mark this version if there is a definition and it is | ||||
| 4817 | not defined in a shared object. */ | ||||
| 4818 | if (newh != NULL((void*)0) | ||||
| 4819 | && ((newh->elf_link_hash_flags | ||||
| 4820 | & ELF_LINK_HASH_DEF_DYNAMIC010) == 0) | ||||
| 4821 | && (newh->root.type == bfd_link_hash_defined | ||||
| 4822 | || newh->root.type == bfd_link_hash_defweak)) | ||||
| 4823 | d->symver = 1; | ||||
| 4824 | } | ||||
| 4825 | |||||
| 4826 | /* Attach all the symbols to their version information. */ | ||||
| 4827 | asvinfo.output_bfd = output_bfd; | ||||
| 4828 | asvinfo.info = info; | ||||
| 4829 | asvinfo.verdefs = verdefs; | ||||
| 4830 | asvinfo.failed = FALSE0; | ||||
| 4831 | |||||
| 4832 | elf_link_hash_traverse (elf_hash_table (info),(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (_bfd_elf_link_assign_sym_version), (&asvinfo ))) | ||||
| 4833 | _bfd_elf_link_assign_sym_version,(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (_bfd_elf_link_assign_sym_version), (&asvinfo ))) | ||||
| 4834 | &asvinfo)(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (_bfd_elf_link_assign_sym_version), (&asvinfo ))); | ||||
| 4835 | if (asvinfo.failed) | ||||
| 4836 | return FALSE0; | ||||
| 4837 | |||||
| 4838 | if (!info->allow_undefined_version) | ||||
| 4839 | { | ||||
| 4840 | /* Check if all global versions have a definition. */ | ||||
| 4841 | all_defined = TRUE1; | ||||
| 4842 | for (t = verdefs; t != NULL((void*)0); t = t->next) | ||||
| 4843 | for (d = t->globals.list; d != NULL((void*)0); d = d->next) | ||||
| 4844 | if (!d->symver && !d->script) | ||||
| 4845 | { | ||||
| 4846 | (*_bfd_error_handler) | ||||
| 4847 | (_("%s: undefined version: %s")("%s: undefined version: %s"), | ||||
| 4848 | d->pattern, t->name); | ||||
| 4849 | all_defined = FALSE0; | ||||
| 4850 | } | ||||
| 4851 | |||||
| 4852 | if (!all_defined) | ||||
| 4853 | { | ||||
| 4854 | bfd_set_error (bfd_error_bad_value); | ||||
| 4855 | return FALSE0; | ||||
| 4856 | } | ||||
| 4857 | } | ||||
| 4858 | |||||
| 4859 | /* Find all symbols which were defined in a dynamic object and make | ||||
| 4860 | the backend pick a reasonable value for them. */ | ||||
| 4861 | elf_link_hash_traverse (elf_hash_table (info),(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (_bfd_elf_adjust_dynamic_symbol), (&eif))) | ||||
| 4862 | _bfd_elf_adjust_dynamic_symbol,(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (_bfd_elf_adjust_dynamic_symbol), (&eif))) | ||||
| 4863 | &eif)(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (_bfd_elf_adjust_dynamic_symbol), (&eif))); | ||||
| 4864 | if (eif.failed) | ||||
| 4865 | return FALSE0; | ||||
| 4866 | |||||
| 4867 | /* Add some entries to the .dynamic section. We fill in some of the | ||||
| 4868 | values later, in elf_bfd_final_link, but we must add the entries | ||||
| 4869 | now so that we know the final size of the .dynamic section. */ | ||||
| 4870 | |||||
| 4871 | /* If there are initialization and/or finalization functions to | ||||
| 4872 | call then add the corresponding DT_INIT/DT_FINI entries. */ | ||||
| 4873 | h = (info->init_function | ||||
| 4874 | ? elf_link_hash_lookup (elf_hash_table (info),((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( info->init_function), (0), (0), (0))) | ||||
| 4875 | info->init_function, FALSE,((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( info->init_function), (0), (0), (0))) | ||||
| 4876 | FALSE, FALSE)((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( info->init_function), (0), (0), (0))) | ||||
| 4877 | : NULL((void*)0)); | ||||
| 4878 | if (h != NULL((void*)0) | ||||
| 4879 | && (h->elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR01 | ||||
| 4880 | | ELF_LINK_HASH_DEF_REGULAR02)) != 0) | ||||
| 4881 | { | ||||
| 4882 | if (!_bfd_elf_add_dynamic_entry (info, DT_INIT12, 0)) | ||||
| 4883 | return FALSE0; | ||||
| 4884 | } | ||||
| 4885 | h = (info->fini_function | ||||
| 4886 | ? elf_link_hash_lookup (elf_hash_table (info),((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( info->fini_function), (0), (0), (0))) | ||||
| 4887 | info->fini_function, FALSE,((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( info->fini_function), (0), (0), (0))) | ||||
| 4888 | FALSE, FALSE)((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( info->fini_function), (0), (0), (0))) | ||||
| 4889 | : NULL((void*)0)); | ||||
| 4890 | if (h != NULL((void*)0) | ||||
| 4891 | && (h->elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR01 | ||||
| 4892 | | ELF_LINK_HASH_DEF_REGULAR02)) != 0) | ||||
| 4893 | { | ||||
| 4894 | if (!_bfd_elf_add_dynamic_entry (info, DT_FINI13, 0)) | ||||
| 4895 | return FALSE0; | ||||
| 4896 | } | ||||
| 4897 | |||||
| 4898 | if (bfd_get_section_by_name (output_bfd, ".preinit_array") != NULL((void*)0)) | ||||
| 4899 | { | ||||
| 4900 | /* DT_PREINIT_ARRAY is not allowed in shared library. */ | ||||
| 4901 | if (! info->executable) | ||||
| 4902 | { | ||||
| 4903 | bfd *sub; | ||||
| 4904 | asection *o; | ||||
| 4905 | |||||
| 4906 | for (sub = info->input_bfds; sub != NULL((void*)0); | ||||
| 4907 | sub = sub->link_next) | ||||
| 4908 | for (o = sub->sections; o != NULL((void*)0); o = o->next) | ||||
| 4909 | if (elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->this_hdr.sh_type | ||||
| 4910 | == SHT_PREINIT_ARRAY16) | ||||
| 4911 | { | ||||
| 4912 | (*_bfd_error_handler) | ||||
| 4913 | (_("%s: .preinit_array section is not allowed in DSO")("%s: .preinit_array section is not allowed in DSO"), | ||||
| 4914 | bfd_archive_filename (sub)); | ||||
| 4915 | break; | ||||
| 4916 | } | ||||
| 4917 | |||||
| 4918 | bfd_set_error (bfd_error_nonrepresentable_section); | ||||
| 4919 | return FALSE0; | ||||
| 4920 | } | ||||
| 4921 | |||||
| 4922 | if (!_bfd_elf_add_dynamic_entry (info, DT_PREINIT_ARRAY32, 0) | ||||
| 4923 | || !_bfd_elf_add_dynamic_entry (info, DT_PREINIT_ARRAYSZ33, 0)) | ||||
| 4924 | return FALSE0; | ||||
| 4925 | } | ||||
| 4926 | if (bfd_get_section_by_name (output_bfd, ".init_array") != NULL((void*)0)) | ||||
| 4927 | { | ||||
| 4928 | if (!_bfd_elf_add_dynamic_entry (info, DT_INIT_ARRAY25, 0) | ||||
| 4929 | || !_bfd_elf_add_dynamic_entry (info, DT_INIT_ARRAYSZ27, 0)) | ||||
| 4930 | return FALSE0; | ||||
| 4931 | } | ||||
| 4932 | if (bfd_get_section_by_name (output_bfd, ".fini_array") != NULL((void*)0)) | ||||
| 4933 | { | ||||
| 4934 | if (!_bfd_elf_add_dynamic_entry (info, DT_FINI_ARRAY26, 0) | ||||
| 4935 | || !_bfd_elf_add_dynamic_entry (info, DT_FINI_ARRAYSZ28, 0)) | ||||
| 4936 | return FALSE0; | ||||
| 4937 | } | ||||
| 4938 | |||||
| 4939 | dynstr = bfd_get_section_by_name (dynobj, ".dynstr"); | ||||
| 4940 | /* If .dynstr is excluded from the link, we don't want any of | ||||
| 4941 | these tags. Strictly, we should be checking each section | ||||
| 4942 | individually; This quick check covers for the case where | ||||
| 4943 | someone does a /DISCARD/ : { *(*) }. */ | ||||
| 4944 | if (dynstr != NULL((void*)0) && dynstr->output_section != bfd_abs_section_ptr((asection *) &bfd_abs_section)) | ||||
| 4945 | { | ||||
| 4946 | bfd_size_type strsize; | ||||
| 4947 | |||||
| 4948 | strsize = _bfd_elf_strtab_size (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynstr); | ||||
| 4949 | if (!_bfd_elf_add_dynamic_entry (info, DT_HASH4, 0) | ||||
| 4950 | || !_bfd_elf_add_dynamic_entry (info, DT_STRTAB5, 0) | ||||
| 4951 | || !_bfd_elf_add_dynamic_entry (info, DT_SYMTAB6, 0) | ||||
| 4952 | || !_bfd_elf_add_dynamic_entry (info, DT_STRSZ10, strsize) | ||||
| 4953 | || !_bfd_elf_add_dynamic_entry (info, DT_SYMENT11, | ||||
| 4954 | bed->s->sizeof_sym)) | ||||
| 4955 | return FALSE0; | ||||
| 4956 | } | ||||
| 4957 | } | ||||
| 4958 | |||||
| 4959 | /* The backend must work out the sizes of all the other dynamic | ||||
| 4960 | sections. */ | ||||
| 4961 | if (bed->elf_backend_size_dynamic_sections | ||||
| 4962 | && ! (*bed->elf_backend_size_dynamic_sections) (output_bfd, info)) | ||||
| 4963 | return FALSE0; | ||||
| 4964 | |||||
| 4965 | if (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynamic_sections_created) | ||||
| 4966 | { | ||||
| 4967 | bfd_size_type dynsymcount; | ||||
| 4968 | asection *s; | ||||
| 4969 | size_t bucketcount = 0; | ||||
| 4970 | size_t hash_entry_size; | ||||
| 4971 | unsigned int dtagcount; | ||||
| 4972 | |||||
| 4973 | /* Set up the version definition section. */ | ||||
| 4974 | s = bfd_get_section_by_name (dynobj, ".gnu.version_d"); | ||||
| 4975 | BFD_ASSERT (s != NULL){ if (!(s != ((void*)0))) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,4975); }; | ||||
| 4976 | |||||
| 4977 | /* We may have created additional version definitions if we are | ||||
| 4978 | just linking a regular application. */ | ||||
| 4979 | verdefs = asvinfo.verdefs; | ||||
| 4980 | |||||
| 4981 | /* Skip anonymous version tag. */ | ||||
| 4982 | if (verdefs != NULL((void*)0) && verdefs->vernum == 0) | ||||
| 4983 | verdefs = verdefs->next; | ||||
| 4984 | |||||
| 4985 | if (verdefs == NULL((void*)0)) | ||||
| 4986 | _bfd_strip_section_from_output (info, s); | ||||
| 4987 | else | ||||
| 4988 | { | ||||
| 4989 | unsigned int cdefs; | ||||
| 4990 | bfd_size_type size; | ||||
| 4991 | struct bfd_elf_version_tree *t; | ||||
| 4992 | bfd_byte *p; | ||||
| 4993 | Elf_Internal_Verdef def; | ||||
| 4994 | Elf_Internal_Verdaux defaux; | ||||
| 4995 | |||||
| 4996 | cdefs = 0; | ||||
| 4997 | size = 0; | ||||
| 4998 | |||||
| 4999 | /* Make space for the base version. */ | ||||
| 5000 | size += sizeof (Elf_External_Verdef); | ||||
| 5001 | size += sizeof (Elf_External_Verdaux); | ||||
| 5002 | ++cdefs; | ||||
| 5003 | |||||
| 5004 | for (t = verdefs; t != NULL((void*)0); t = t->next) | ||||
| 5005 | { | ||||
| 5006 | struct bfd_elf_version_deps *n; | ||||
| 5007 | |||||
| 5008 | size += sizeof (Elf_External_Verdef); | ||||
| 5009 | size += sizeof (Elf_External_Verdaux); | ||||
| 5010 | ++cdefs; | ||||
| 5011 | |||||
| 5012 | for (n = t->deps; n != NULL((void*)0); n = n->next) | ||||
| 5013 | size += sizeof (Elf_External_Verdaux); | ||||
| 5014 | } | ||||
| 5015 | |||||
| 5016 | s->_raw_size = size; | ||||
| 5017 | s->contents = bfd_alloc (output_bfd, s->_raw_size); | ||||
| 5018 | if (s->contents == NULL((void*)0) && s->_raw_size != 0) | ||||
| 5019 | return FALSE0; | ||||
| 5020 | |||||
| 5021 | /* Fill in the version definition section. */ | ||||
| 5022 | |||||
| 5023 | p = s->contents; | ||||
| 5024 | |||||
| 5025 | def.vd_version = VER_DEF_CURRENT1; | ||||
| 5026 | def.vd_flags = VER_FLG_BASE0x1; | ||||
| 5027 | def.vd_ndx = 1; | ||||
| 5028 | def.vd_cnt = 1; | ||||
| 5029 | def.vd_aux = sizeof (Elf_External_Verdef); | ||||
| 5030 | def.vd_next = (sizeof (Elf_External_Verdef) | ||||
| 5031 | + sizeof (Elf_External_Verdaux)); | ||||
| 5032 | |||||
| 5033 | if (soname_indx != (bfd_size_type) -1) | ||||
| 5034 | { | ||||
| 5035 | _bfd_elf_strtab_addref (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynstr, | ||||
| 5036 | soname_indx); | ||||
| 5037 | def.vd_hash = bfd_elf_hash (soname); | ||||
| 5038 | defaux.vda_name = soname_indx; | ||||
| 5039 | } | ||||
| 5040 | else | ||||
| 5041 | { | ||||
| 5042 | const char *name; | ||||
| 5043 | bfd_size_type indx; | ||||
| 5044 | |||||
| 5045 | name = basename (output_bfd->filename); | ||||
| 5046 | def.vd_hash = bfd_elf_hash (name); | ||||
| 5047 | indx = _bfd_elf_strtab_add (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynstr, | ||||
| 5048 | name, FALSE0); | ||||
| 5049 | if (indx == (bfd_size_type) -1) | ||||
| 5050 | return FALSE0; | ||||
| 5051 | defaux.vda_name = indx; | ||||
| 5052 | } | ||||
| 5053 | defaux.vda_next = 0; | ||||
| 5054 | |||||
| 5055 | _bfd_elf_swap_verdef_out (output_bfd, &def, | ||||
| 5056 | (Elf_External_Verdef *) p); | ||||
| 5057 | p += sizeof (Elf_External_Verdef); | ||||
| 5058 | _bfd_elf_swap_verdaux_out (output_bfd, &defaux, | ||||
| 5059 | (Elf_External_Verdaux *) p); | ||||
| 5060 | p += sizeof (Elf_External_Verdaux); | ||||
| 5061 | |||||
| 5062 | for (t = verdefs; t != NULL((void*)0); t = t->next) | ||||
| 5063 | { | ||||
| 5064 | unsigned int cdeps; | ||||
| 5065 | struct bfd_elf_version_deps *n; | ||||
| 5066 | struct elf_link_hash_entry *h; | ||||
| 5067 | struct bfd_link_hash_entry *bh; | ||||
| 5068 | |||||
| 5069 | cdeps = 0; | ||||
| 5070 | for (n = t->deps; n != NULL((void*)0); n = n->next) | ||||
| 5071 | ++cdeps; | ||||
| 5072 | |||||
| 5073 | /* Add a symbol representing this version. */ | ||||
| 5074 | bh = NULL((void*)0); | ||||
| 5075 | if (! (_bfd_generic_link_add_one_symbol | ||||
| 5076 | (info, dynobj, t->name, BSF_GLOBAL0x02, bfd_abs_section_ptr((asection *) &bfd_abs_section), | ||||
| 5077 | 0, NULL((void*)0), FALSE0, | ||||
| 5078 | get_elf_backend_data (dynobj)((const struct elf_backend_data *) (dynobj)->xvec->backend_data )->collect, &bh))) | ||||
| 5079 | return FALSE0; | ||||
| 5080 | h = (struct elf_link_hash_entry *) bh; | ||||
| 5081 | h->elf_link_hash_flags &= ~ ELF_LINK_NON_ELF0400; | ||||
| 5082 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR02; | ||||
| 5083 | h->type = STT_OBJECT1; | ||||
| 5084 | h->verinfo.vertree = t; | ||||
| 5085 | |||||
| 5086 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | ||||
| 5087 | return FALSE0; | ||||
| 5088 | |||||
| 5089 | def.vd_version = VER_DEF_CURRENT1; | ||||
| 5090 | def.vd_flags = 0; | ||||
| 5091 | if (t->globals.list == NULL((void*)0) | ||||
| 5092 | && t->locals.list == NULL((void*)0) | ||||
| 5093 | && ! t->used) | ||||
| 5094 | def.vd_flags |= VER_FLG_WEAK0x2; | ||||
| 5095 | def.vd_ndx = t->vernum + 1; | ||||
| 5096 | def.vd_cnt = cdeps + 1; | ||||
| 5097 | def.vd_hash = bfd_elf_hash (t->name); | ||||
| 5098 | def.vd_aux = sizeof (Elf_External_Verdef); | ||||
| 5099 | def.vd_next = 0; | ||||
| 5100 | if (t->next != NULL((void*)0)) | ||||
| 5101 | def.vd_next = (sizeof (Elf_External_Verdef) | ||||
| 5102 | + (cdeps + 1) * sizeof (Elf_External_Verdaux)); | ||||
| 5103 | |||||
| 5104 | _bfd_elf_swap_verdef_out (output_bfd, &def, | ||||
| 5105 | (Elf_External_Verdef *) p); | ||||
| 5106 | p += sizeof (Elf_External_Verdef); | ||||
| 5107 | |||||
| 5108 | defaux.vda_name = h->dynstr_index; | ||||
| 5109 | _bfd_elf_strtab_addref (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynstr, | ||||
| 5110 | h->dynstr_index); | ||||
| 5111 | defaux.vda_next = 0; | ||||
| 5112 | if (t->deps != NULL((void*)0)) | ||||
| 5113 | defaux.vda_next = sizeof (Elf_External_Verdaux); | ||||
| 5114 | t->name_indx = defaux.vda_name; | ||||
| 5115 | |||||
| 5116 | _bfd_elf_swap_verdaux_out (output_bfd, &defaux, | ||||
| 5117 | (Elf_External_Verdaux *) p); | ||||
| 5118 | p += sizeof (Elf_External_Verdaux); | ||||
| 5119 | |||||
| 5120 | for (n = t->deps; n != NULL((void*)0); n = n->next) | ||||
| 5121 | { | ||||
| 5122 | if (n->version_needed == NULL((void*)0)) | ||||
| 5123 | { | ||||
| 5124 | /* This can happen if there was an error in the | ||||
| 5125 | version script. */ | ||||
| 5126 | defaux.vda_name = 0; | ||||
| 5127 | } | ||||
| 5128 | else | ||||
| 5129 | { | ||||
| 5130 | defaux.vda_name = n->version_needed->name_indx; | ||||
| 5131 | _bfd_elf_strtab_addref (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynstr, | ||||
| 5132 | defaux.vda_name); | ||||
| 5133 | } | ||||
| 5134 | if (n->next == NULL((void*)0)) | ||||
| 5135 | defaux.vda_next = 0; | ||||
| 5136 | else | ||||
| 5137 | defaux.vda_next = sizeof (Elf_External_Verdaux); | ||||
| 5138 | |||||
| 5139 | _bfd_elf_swap_verdaux_out (output_bfd, &defaux, | ||||
| 5140 | (Elf_External_Verdaux *) p); | ||||
| 5141 | p += sizeof (Elf_External_Verdaux); | ||||
| 5142 | } | ||||
| 5143 | } | ||||
| 5144 | |||||
| 5145 | if (!_bfd_elf_add_dynamic_entry (info, DT_VERDEF0x6ffffffc, 0) | ||||
| 5146 | || !_bfd_elf_add_dynamic_entry (info, DT_VERDEFNUM0x6ffffffd, cdefs)) | ||||
| 5147 | return FALSE0; | ||||
| 5148 | |||||
| 5149 | elf_tdata (output_bfd)((output_bfd) -> tdata.elf_obj_data)->cverdefs = cdefs; | ||||
| 5150 | } | ||||
| 5151 | |||||
| 5152 | if ((info->new_dtags && info->flags) || (info->flags & DF_STATIC_TLS(1 << 4))) | ||||
| 5153 | { | ||||
| 5154 | if (!_bfd_elf_add_dynamic_entry (info, DT_FLAGS30, info->flags)) | ||||
| 5155 | return FALSE0; | ||||
| 5156 | } | ||||
| 5157 | else if (info->flags & DF_BIND_NOW(1 << 3)) | ||||
| 5158 | { | ||||
| 5159 | if (!_bfd_elf_add_dynamic_entry (info, DT_BIND_NOW24, 0)) | ||||
| 5160 | return FALSE0; | ||||
| 5161 | } | ||||
| 5162 | |||||
| 5163 | if (info->flags_1) | ||||
| 5164 | { | ||||
| 5165 | if (info->executable) | ||||
| 5166 | info->flags_1 &= ~ (DF_1_INITFIRST0x00000020 | ||||
| 5167 | | DF_1_NODELETE0x00000008 | ||||
| 5168 | | DF_1_NOOPEN0x00000040); | ||||
| 5169 | if (!_bfd_elf_add_dynamic_entry (info, DT_FLAGS_10x6ffffffb, info->flags_1)) | ||||
| 5170 | return FALSE0; | ||||
| 5171 | } | ||||
| 5172 | |||||
| 5173 | /* Work out the size of the version reference section. */ | ||||
| 5174 | |||||
| 5175 | s = bfd_get_section_by_name (dynobj, ".gnu.version_r"); | ||||
| 5176 | BFD_ASSERT (s != NULL){ if (!(s != ((void*)0))) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,5176); }; | ||||
| 5177 | { | ||||
| 5178 | struct elf_find_verdep_info sinfo; | ||||
| 5179 | |||||
| 5180 | sinfo.output_bfd = output_bfd; | ||||
| 5181 | sinfo.info = info; | ||||
| 5182 | sinfo.vers = elf_tdata (output_bfd)((output_bfd) -> tdata.elf_obj_data)->cverdefs; | ||||
| 5183 | if (sinfo.vers == 0) | ||||
| 5184 | sinfo.vers = 1; | ||||
| 5185 | sinfo.failed = FALSE0; | ||||
| 5186 | |||||
| 5187 | elf_link_hash_traverse (elf_hash_table (info),(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (_bfd_elf_link_find_version_dependencies), (& sinfo))) | ||||
| 5188 | _bfd_elf_link_find_version_dependencies,(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (_bfd_elf_link_find_version_dependencies), (& sinfo))) | ||||
| 5189 | &sinfo)(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (_bfd_elf_link_find_version_dependencies), (& sinfo))); | ||||
| 5190 | |||||
| 5191 | if (elf_tdata (output_bfd)((output_bfd) -> tdata.elf_obj_data)->verref == NULL((void*)0)) | ||||
| 5192 | _bfd_strip_section_from_output (info, s); | ||||
| 5193 | else | ||||
| 5194 | { | ||||
| 5195 | Elf_Internal_Verneed *t; | ||||
| 5196 | unsigned int size; | ||||
| 5197 | unsigned int crefs; | ||||
| 5198 | bfd_byte *p; | ||||
| 5199 | |||||
| 5200 | /* Build the version definition section. */ | ||||
| 5201 | size = 0; | ||||
| 5202 | crefs = 0; | ||||
| 5203 | for (t = elf_tdata (output_bfd)((output_bfd) -> tdata.elf_obj_data)->verref; | ||||
| 5204 | t != NULL((void*)0); | ||||
| 5205 | t = t->vn_nextref) | ||||
| 5206 | { | ||||
| 5207 | Elf_Internal_Vernaux *a; | ||||
| 5208 | |||||
| 5209 | size += sizeof (Elf_External_Verneed); | ||||
| 5210 | ++crefs; | ||||
| 5211 | for (a = t->vn_auxptr; a != NULL((void*)0); a = a->vna_nextptr) | ||||
| 5212 | size += sizeof (Elf_External_Vernaux); | ||||
| 5213 | } | ||||
| 5214 | |||||
| 5215 | s->_raw_size = size; | ||||
| 5216 | s->contents = bfd_alloc (output_bfd, s->_raw_size); | ||||
| 5217 | if (s->contents == NULL((void*)0)) | ||||
| 5218 | return FALSE0; | ||||
| 5219 | |||||
| 5220 | p = s->contents; | ||||
| 5221 | for (t = elf_tdata (output_bfd)((output_bfd) -> tdata.elf_obj_data)->verref; | ||||
| 5222 | t != NULL((void*)0); | ||||
| 5223 | t = t->vn_nextref) | ||||
| 5224 | { | ||||
| 5225 | unsigned int caux; | ||||
| 5226 | Elf_Internal_Vernaux *a; | ||||
| 5227 | bfd_size_type indx; | ||||
| 5228 | |||||
| 5229 | caux = 0; | ||||
| 5230 | for (a = t->vn_auxptr; a != NULL((void*)0); a = a->vna_nextptr) | ||||
| 5231 | ++caux; | ||||
| 5232 | |||||
| 5233 | t->vn_version = VER_NEED_CURRENT1; | ||||
| 5234 | t->vn_cnt = caux; | ||||
| 5235 | indx = _bfd_elf_strtab_add (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynstr, | ||||
| 5236 | elf_dt_name (t->vn_bfd)(((t->vn_bfd) -> tdata.elf_obj_data) -> dt_name) != NULL((void*)0) | ||||
| 5237 | ? elf_dt_name (t->vn_bfd)(((t->vn_bfd) -> tdata.elf_obj_data) -> dt_name) | ||||
| 5238 | : basename (t->vn_bfd->filename), | ||||
| 5239 | FALSE0); | ||||
| 5240 | if (indx == (bfd_size_type) -1) | ||||
| 5241 | return FALSE0; | ||||
| 5242 | t->vn_file = indx; | ||||
| 5243 | t->vn_aux = sizeof (Elf_External_Verneed); | ||||
| 5244 | if (t->vn_nextref == NULL((void*)0)) | ||||
| 5245 | t->vn_next = 0; | ||||
| 5246 | else | ||||
| 5247 | t->vn_next = (sizeof (Elf_External_Verneed) | ||||
| 5248 | + caux * sizeof (Elf_External_Vernaux)); | ||||
| 5249 | |||||
| 5250 | _bfd_elf_swap_verneed_out (output_bfd, t, | ||||
| 5251 | (Elf_External_Verneed *) p); | ||||
| 5252 | p += sizeof (Elf_External_Verneed); | ||||
| 5253 | |||||
| 5254 | for (a = t->vn_auxptr; a != NULL((void*)0); a = a->vna_nextptr) | ||||
| 5255 | { | ||||
| 5256 | a->vna_hash = bfd_elf_hash (a->vna_nodename); | ||||
| 5257 | indx = _bfd_elf_strtab_add (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynstr, | ||||
| 5258 | a->vna_nodename, FALSE0); | ||||
| 5259 | if (indx == (bfd_size_type) -1) | ||||
| 5260 | return FALSE0; | ||||
| 5261 | a->vna_name = indx; | ||||
| 5262 | if (a->vna_nextptr == NULL((void*)0)) | ||||
| 5263 | a->vna_next = 0; | ||||
| 5264 | else | ||||
| 5265 | a->vna_next = sizeof (Elf_External_Vernaux); | ||||
| 5266 | |||||
| 5267 | _bfd_elf_swap_vernaux_out (output_bfd, a, | ||||
| 5268 | (Elf_External_Vernaux *) p); | ||||
| 5269 | p += sizeof (Elf_External_Vernaux); | ||||
| 5270 | } | ||||
| 5271 | } | ||||
| 5272 | |||||
| 5273 | if (!_bfd_elf_add_dynamic_entry (info, DT_VERNEED0x6ffffffe, 0) | ||||
| 5274 | || !_bfd_elf_add_dynamic_entry (info, DT_VERNEEDNUM0x6fffffff, crefs)) | ||||
| 5275 | return FALSE0; | ||||
| 5276 | |||||
| 5277 | elf_tdata (output_bfd)((output_bfd) -> tdata.elf_obj_data)->cverrefs = crefs; | ||||
| 5278 | } | ||||
| 5279 | } | ||||
| 5280 | |||||
| 5281 | /* Assign dynsym indicies. In a shared library we generate a | ||||
| 5282 | section symbol for each output section, which come first. | ||||
| 5283 | Next come all of the back-end allocated local dynamic syms, | ||||
| 5284 | followed by the rest of the global symbols. */ | ||||
| 5285 | |||||
| 5286 | dynsymcount = _bfd_elf_link_renumber_dynsyms (output_bfd, info); | ||||
| 5287 | |||||
| 5288 | /* Work out the size of the symbol version section. */ | ||||
| 5289 | s = bfd_get_section_by_name (dynobj, ".gnu.version"); | ||||
| 5290 | BFD_ASSERT (s != NULL){ if (!(s != ((void*)0))) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,5290); }; | ||||
| 5291 | if (dynsymcount == 0 | ||||
| 5292 | || (verdefs == NULL((void*)0) && elf_tdata (output_bfd)((output_bfd) -> tdata.elf_obj_data)->verref == NULL((void*)0))) | ||||
| 5293 | { | ||||
| 5294 | _bfd_strip_section_from_output (info, s); | ||||
| 5295 | /* The DYNSYMCOUNT might have changed if we were going to | ||||
| 5296 | output a dynamic symbol table entry for S. */ | ||||
| 5297 | dynsymcount = _bfd_elf_link_renumber_dynsyms (output_bfd, info); | ||||
| 5298 | } | ||||
| 5299 | else | ||||
| 5300 | { | ||||
| 5301 | s->_raw_size = dynsymcount * sizeof (Elf_External_Versym); | ||||
| 5302 | s->contents = bfd_zalloc (output_bfd, s->_raw_size); | ||||
| 5303 | if (s->contents == NULL((void*)0)) | ||||
| 5304 | return FALSE0; | ||||
| 5305 | |||||
| 5306 | if (!_bfd_elf_add_dynamic_entry (info, DT_VERSYM0x6ffffff0, 0)) | ||||
| 5307 | return FALSE0; | ||||
| 5308 | } | ||||
| 5309 | |||||
| 5310 | /* Set the size of the .dynsym and .hash sections. We counted | ||||
| 5311 | the number of dynamic symbols in elf_link_add_object_symbols. | ||||
| 5312 | We will build the contents of .dynsym and .hash when we build | ||||
| 5313 | the final symbol table, because until then we do not know the | ||||
| 5314 | correct value to give the symbols. We built the .dynstr | ||||
| 5315 | section as we went along in elf_link_add_object_symbols. */ | ||||
| 5316 | s = bfd_get_section_by_name (dynobj, ".dynsym"); | ||||
| 5317 | BFD_ASSERT (s != NULL){ if (!(s != ((void*)0))) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,5317); }; | ||||
| 5318 | s->_raw_size = dynsymcount * bed->s->sizeof_sym; | ||||
| 5319 | s->contents = bfd_alloc (output_bfd, s->_raw_size); | ||||
| 5320 | if (s->contents == NULL((void*)0) && s->_raw_size != 0) | ||||
| 5321 | return FALSE0; | ||||
| 5322 | |||||
| 5323 | if (dynsymcount != 0) | ||||
| 5324 | { | ||||
| 5325 | Elf_Internal_Sym isym; | ||||
| 5326 | |||||
| 5327 | /* The first entry in .dynsym is a dummy symbol. */ | ||||
| 5328 | isym.st_value = 0; | ||||
| 5329 | isym.st_size = 0; | ||||
| 5330 | isym.st_name = 0; | ||||
| 5331 | isym.st_info = 0; | ||||
| 5332 | isym.st_other = 0; | ||||
| 5333 | isym.st_shndx = 0; | ||||
| 5334 | bed->s->swap_symbol_out (output_bfd, &isym, s->contents, 0); | ||||
| 5335 | } | ||||
| 5336 | |||||
| 5337 | /* Compute the size of the hashing table. As a side effect this | ||||
| 5338 | computes the hash values for all the names we export. */ | ||||
| 5339 | bucketcount = compute_bucket_count (info); | ||||
| 5340 | |||||
| 5341 | s = bfd_get_section_by_name (dynobj, ".hash"); | ||||
| 5342 | BFD_ASSERT (s != NULL){ if (!(s != ((void*)0))) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,5342); }; | ||||
| 5343 | hash_entry_size = elf_section_data (s)((struct bfd_elf_section_data*)s->used_by_bfd)->this_hdr.sh_entsize; | ||||
| 5344 | s->_raw_size = ((2 + bucketcount + dynsymcount) * hash_entry_size); | ||||
| 5345 | s->contents = bfd_zalloc (output_bfd, s->_raw_size); | ||||
| 5346 | if (s->contents == NULL((void*)0)) | ||||
| 5347 | return FALSE0; | ||||
| 5348 | |||||
| 5349 | bfd_put (8 * hash_entry_size, output_bfd, bucketcount, s->contents)((8 * hash_entry_size) == 8 ? ((void) (*((unsigned char *) (s ->contents)) = (bucketcount) & 0xff)) : (8 * hash_entry_size ) == 16 ? ((*((output_bfd)->xvec->bfd_putx16)) ((bucketcount ),(s->contents))) : (8 * hash_entry_size) == 32 ? ((*((output_bfd )->xvec->bfd_putx32)) ((bucketcount),(s->contents))) : (8 * hash_entry_size) == 64 ? ((*((output_bfd)->xvec-> bfd_putx64)) ((bucketcount), (s->contents))) : (_bfd_abort ("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c", 5349, __PRETTY_FUNCTION__ ), (void) 0)); | ||||
| 5350 | bfd_put (8 * hash_entry_size, output_bfd, dynsymcount,((8 * hash_entry_size) == 8 ? ((void) (*((unsigned char *) (s ->contents + hash_entry_size)) = (dynsymcount) & 0xff) ) : (8 * hash_entry_size) == 16 ? ((*((output_bfd)->xvec-> bfd_putx16)) ((dynsymcount),(s->contents + hash_entry_size ))) : (8 * hash_entry_size) == 32 ? ((*((output_bfd)->xvec ->bfd_putx32)) ((dynsymcount),(s->contents + hash_entry_size ))) : (8 * hash_entry_size) == 64 ? ((*((output_bfd)->xvec ->bfd_putx64)) ((dynsymcount), (s->contents + hash_entry_size ))) : (_bfd_abort ("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" , 5351, __PRETTY_FUNCTION__), (void) 0)) | ||||
| 5351 | s->contents + hash_entry_size)((8 * hash_entry_size) == 8 ? ((void) (*((unsigned char *) (s ->contents + hash_entry_size)) = (dynsymcount) & 0xff) ) : (8 * hash_entry_size) == 16 ? ((*((output_bfd)->xvec-> bfd_putx16)) ((dynsymcount),(s->contents + hash_entry_size ))) : (8 * hash_entry_size) == 32 ? ((*((output_bfd)->xvec ->bfd_putx32)) ((dynsymcount),(s->contents + hash_entry_size ))) : (8 * hash_entry_size) == 64 ? ((*((output_bfd)->xvec ->bfd_putx64)) ((dynsymcount), (s->contents + hash_entry_size ))) : (_bfd_abort ("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" , 5351, __PRETTY_FUNCTION__), (void) 0)); | ||||
| 5352 | |||||
| 5353 | elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->bucketcount = bucketcount; | ||||
| 5354 | |||||
| 5355 | s = bfd_get_section_by_name (dynobj, ".dynstr"); | ||||
| 5356 | BFD_ASSERT (s != NULL){ if (!(s != ((void*)0))) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,5356); }; | ||||
| 5357 | |||||
| 5358 | elf_finalize_dynstr (output_bfd, info); | ||||
| 5359 | |||||
| 5360 | s->_raw_size = _bfd_elf_strtab_size (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynstr); | ||||
| 5361 | |||||
| 5362 | for (dtagcount = 0; dtagcount <= info->spare_dynamic_tags; ++dtagcount) | ||||
| 5363 | if (!_bfd_elf_add_dynamic_entry (info, DT_NULL0, 0)) | ||||
| 5364 | return FALSE0; | ||||
| 5365 | } | ||||
| 5366 | |||||
| 5367 | return TRUE1; | ||||
| 5368 | } | ||||
| 5369 | |||||
| 5370 | /* Final phase of ELF linker. */ | ||||
| 5371 | |||||
| 5372 | /* A structure we use to avoid passing large numbers of arguments. */ | ||||
| 5373 | |||||
| 5374 | struct elf_final_link_info | ||||
| 5375 | { | ||||
| 5376 | /* General link information. */ | ||||
| 5377 | struct bfd_link_info *info; | ||||
| 5378 | /* Output BFD. */ | ||||
| 5379 | bfd *output_bfd; | ||||
| 5380 | /* Symbol string table. */ | ||||
| 5381 | struct bfd_strtab_hash *symstrtab; | ||||
| 5382 | /* .dynsym section. */ | ||||
| 5383 | asection *dynsym_sec; | ||||
| 5384 | /* .hash section. */ | ||||
| 5385 | asection *hash_sec; | ||||
| 5386 | /* symbol version section (.gnu.version). */ | ||||
| 5387 | asection *symver_sec; | ||||
| 5388 | /* Buffer large enough to hold contents of any section. */ | ||||
| 5389 | bfd_byte *contents; | ||||
| 5390 | /* Buffer large enough to hold external relocs of any section. */ | ||||
| 5391 | void *external_relocs; | ||||
| 5392 | /* Buffer large enough to hold internal relocs of any section. */ | ||||
| 5393 | Elf_Internal_Rela *internal_relocs; | ||||
| 5394 | /* Buffer large enough to hold external local symbols of any input | ||||
| 5395 | BFD. */ | ||||
| 5396 | bfd_byte *external_syms; | ||||
| 5397 | /* And a buffer for symbol section indices. */ | ||||
| 5398 | Elf_External_Sym_Shndx *locsym_shndx; | ||||
| 5399 | /* Buffer large enough to hold internal local symbols of any input | ||||
| 5400 | BFD. */ | ||||
| 5401 | Elf_Internal_Sym *internal_syms; | ||||
| 5402 | /* Array large enough to hold a symbol index for each local symbol | ||||
| 5403 | of any input BFD. */ | ||||
| 5404 | long *indices; | ||||
| 5405 | /* Array large enough to hold a section pointer for each local | ||||
| 5406 | symbol of any input BFD. */ | ||||
| 5407 | asection **sections; | ||||
| 5408 | /* Buffer to hold swapped out symbols. */ | ||||
| 5409 | bfd_byte *symbuf; | ||||
| 5410 | /* And one for symbol section indices. */ | ||||
| 5411 | Elf_External_Sym_Shndx *symshndxbuf; | ||||
| 5412 | /* Number of swapped out symbols in buffer. */ | ||||
| 5413 | size_t symbuf_count; | ||||
| 5414 | /* Number of symbols which fit in symbuf. */ | ||||
| 5415 | size_t symbuf_size; | ||||
| 5416 | /* And same for symshndxbuf. */ | ||||
| 5417 | size_t shndxbuf_size; | ||||
| 5418 | }; | ||||
| 5419 | |||||
| 5420 | /* This struct is used to pass information to elf_link_output_extsym. */ | ||||
| 5421 | |||||
| 5422 | struct elf_outext_info | ||||
| 5423 | { | ||||
| 5424 | bfd_boolean failed; | ||||
| 5425 | bfd_boolean localsyms; | ||||
| 5426 | struct elf_final_link_info *finfo; | ||||
| 5427 | }; | ||||
| 5428 | |||||
| 5429 | /* When performing a relocatable link, the input relocations are | ||||
| 5430 | preserved. But, if they reference global symbols, the indices | ||||
| 5431 | referenced must be updated. Update all the relocations in | ||||
| 5432 | REL_HDR (there are COUNT of them), using the data in REL_HASH. */ | ||||
| 5433 | |||||
| 5434 | static void | ||||
| 5435 | elf_link_adjust_relocs (bfd *abfd, | ||||
| 5436 | Elf_Internal_Shdr *rel_hdr, | ||||
| 5437 | unsigned int count, | ||||
| 5438 | struct elf_link_hash_entry **rel_hash) | ||||
| 5439 | { | ||||
| 5440 | unsigned int i; | ||||
| 5441 | const struct elf_backend_data *bed = get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data ); | ||||
| 5442 | bfd_byte *erela; | ||||
| 5443 | void (*swap_in) (bfd *, const bfd_byte *, Elf_Internal_Rela *); | ||||
| 5444 | void (*swap_out) (bfd *, const Elf_Internal_Rela *, bfd_byte *); | ||||
| 5445 | bfd_vma r_type_mask; | ||||
| 5446 | int r_sym_shift; | ||||
| 5447 | |||||
| 5448 | if (rel_hdr->sh_entsize == bed->s->sizeof_rel) | ||||
| 5449 | { | ||||
| 5450 | swap_in = bed->s->swap_reloc_in; | ||||
| 5451 | swap_out = bed->s->swap_reloc_out; | ||||
| 5452 | } | ||||
| 5453 | else if (rel_hdr->sh_entsize == bed->s->sizeof_rela) | ||||
| 5454 | { | ||||
| 5455 | swap_in = bed->s->swap_reloca_in; | ||||
| 5456 | swap_out = bed->s->swap_reloca_out; | ||||
| 5457 | } | ||||
| 5458 | else | ||||
| 5459 | abort ()_bfd_abort ("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c", 5459 , __PRETTY_FUNCTION__); | ||||
| 5460 | |||||
| 5461 | if (bed->s->int_rels_per_ext_rel > MAX_INT_RELS_PER_EXT_REL3) | ||||
| 5462 | abort ()_bfd_abort ("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c", 5462 , __PRETTY_FUNCTION__); | ||||
| 5463 | |||||
| 5464 | if (bed->s->arch_size == 32) | ||||
| 5465 | { | ||||
| 5466 | r_type_mask = 0xff; | ||||
| 5467 | r_sym_shift = 8; | ||||
| 5468 | } | ||||
| 5469 | else | ||||
| 5470 | { | ||||
| 5471 | r_type_mask = 0xffffffff; | ||||
| 5472 | r_sym_shift = 32; | ||||
| 5473 | } | ||||
| 5474 | |||||
| 5475 | erela = rel_hdr->contents; | ||||
| 5476 | for (i = 0; i < count; i++, rel_hash++, erela += rel_hdr->sh_entsize) | ||||
| 5477 | { | ||||
| 5478 | Elf_Internal_Rela irela[MAX_INT_RELS_PER_EXT_REL3]; | ||||
| 5479 | unsigned int j; | ||||
| 5480 | |||||
| 5481 | if (*rel_hash == NULL((void*)0)) | ||||
| 5482 | continue; | ||||
| 5483 | |||||
| 5484 | BFD_ASSERT ((*rel_hash)->indx >= 0){ if (!((*rel_hash)->indx >= 0)) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,5484); }; | ||||
| 5485 | |||||
| 5486 | (*swap_in) (abfd, erela, irela); | ||||
| 5487 | for (j = 0; j < bed->s->int_rels_per_ext_rel; j++) | ||||
| 5488 | irela[j].r_info = ((bfd_vma) (*rel_hash)->indx << r_sym_shift | ||||
| 5489 | | (irela[j].r_info & r_type_mask)); | ||||
| 5490 | (*swap_out) (abfd, irela, erela); | ||||
| 5491 | } | ||||
| 5492 | } | ||||
| 5493 | |||||
| 5494 | struct elf_link_sort_rela | ||||
| 5495 | { | ||||
| 5496 | union { | ||||
| 5497 | bfd_vma offset; | ||||
| 5498 | bfd_vma sym_mask; | ||||
| 5499 | } u; | ||||
| 5500 | enum elf_reloc_type_class type; | ||||
| 5501 | /* We use this as an array of size int_rels_per_ext_rel. */ | ||||
| 5502 | Elf_Internal_Rela rela[1]; | ||||
| 5503 | }; | ||||
| 5504 | |||||
| 5505 | static int | ||||
| 5506 | elf_link_sort_cmp1 (const void *A, const void *B) | ||||
| 5507 | { | ||||
| 5508 | const struct elf_link_sort_rela *a = A; | ||||
| 5509 | const struct elf_link_sort_rela *b = B; | ||||
| 5510 | int relativea, relativeb; | ||||
| 5511 | |||||
| 5512 | relativea = a->type == reloc_class_relative; | ||||
| 5513 | relativeb = b->type == reloc_class_relative; | ||||
| 5514 | |||||
| 5515 | if (relativea < relativeb) | ||||
| 5516 | return 1; | ||||
| 5517 | if (relativea > relativeb) | ||||
| 5518 | return -1; | ||||
| 5519 | if ((a->rela->r_info & a->u.sym_mask) < (b->rela->r_info & b->u.sym_mask)) | ||||
| 5520 | return -1; | ||||
| 5521 | if ((a->rela->r_info & a->u.sym_mask) > (b->rela->r_info & b->u.sym_mask)) | ||||
| 5522 | return 1; | ||||
| 5523 | if (a->rela->r_offset < b->rela->r_offset) | ||||
| 5524 | return -1; | ||||
| 5525 | if (a->rela->r_offset > b->rela->r_offset) | ||||
| 5526 | return 1; | ||||
| 5527 | return 0; | ||||
| 5528 | } | ||||
| 5529 | |||||
| 5530 | static int | ||||
| 5531 | elf_link_sort_cmp2 (const void *A, const void *B) | ||||
| 5532 | { | ||||
| 5533 | const struct elf_link_sort_rela *a = A; | ||||
| 5534 | const struct elf_link_sort_rela *b = B; | ||||
| 5535 | int copya, copyb; | ||||
| 5536 | |||||
| 5537 | if (a->u.offset < b->u.offset) | ||||
| 5538 | return -1; | ||||
| 5539 | if (a->u.offset > b->u.offset) | ||||
| 5540 | return 1; | ||||
| 5541 | copya = (a->type == reloc_class_copy) * 2 + (a->type == reloc_class_plt); | ||||
| 5542 | copyb = (b->type == reloc_class_copy) * 2 + (b->type == reloc_class_plt); | ||||
| 5543 | if (copya < copyb) | ||||
| 5544 | return -1; | ||||
| 5545 | if (copya > copyb) | ||||
| 5546 | return 1; | ||||
| 5547 | if (a->rela->r_offset < b->rela->r_offset) | ||||
| 5548 | return -1; | ||||
| 5549 | if (a->rela->r_offset > b->rela->r_offset) | ||||
| 5550 | return 1; | ||||
| 5551 | return 0; | ||||
| 5552 | } | ||||
| 5553 | |||||
| 5554 | static size_t | ||||
| 5555 | elf_link_sort_relocs (bfd *abfd, struct bfd_link_info *info, asection **psec) | ||||
| 5556 | { | ||||
| 5557 | asection *reldyn; | ||||
| 5558 | bfd_size_type count, size; | ||||
| 5559 | size_t i, ret, sort_elt, ext_size; | ||||
| 5560 | bfd_byte *sort, *s_non_relative, *p; | ||||
| 5561 | struct elf_link_sort_rela *sq; | ||||
| 5562 | const struct elf_backend_data *bed = get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data ); | ||||
| 5563 | int i2e = bed->s->int_rels_per_ext_rel; | ||||
| 5564 | void (*swap_in) (bfd *, const bfd_byte *, Elf_Internal_Rela *); | ||||
| 5565 | void (*swap_out) (bfd *, const Elf_Internal_Rela *, bfd_byte *); | ||||
| 5566 | struct bfd_link_order *lo; | ||||
| 5567 | bfd_vma r_sym_mask; | ||||
| 5568 | |||||
| 5569 | reldyn = bfd_get_section_by_name (abfd, ".rela.dyn"); | ||||
| 5570 | if (reldyn == NULL((void*)0) || reldyn->_raw_size == 0) | ||||
| 5571 | { | ||||
| 5572 | reldyn = bfd_get_section_by_name (abfd, ".rel.dyn"); | ||||
| 5573 | if (reldyn == NULL((void*)0) || reldyn->_raw_size == 0) | ||||
| 5574 | return 0; | ||||
| 5575 | ext_size = bed->s->sizeof_rel; | ||||
| 5576 | swap_in = bed->s->swap_reloc_in; | ||||
| 5577 | swap_out = bed->s->swap_reloc_out; | ||||
| 5578 | } | ||||
| 5579 | else | ||||
| 5580 | { | ||||
| 5581 | ext_size = bed->s->sizeof_rela; | ||||
| 5582 | swap_in = bed->s->swap_reloca_in; | ||||
| 5583 | swap_out = bed->s->swap_reloca_out; | ||||
| 5584 | } | ||||
| 5585 | count = reldyn->_raw_size / ext_size; | ||||
| 5586 | |||||
| 5587 | size = 0; | ||||
| 5588 | for (lo = reldyn->link_order_head; lo != NULL((void*)0); lo = lo->next) | ||||
| 5589 | if (lo->type == bfd_indirect_link_order) | ||||
| 5590 | { | ||||
| 5591 | asection *o = lo->u.indirect.section; | ||||
| 5592 | size += o->_raw_size; | ||||
| 5593 | } | ||||
| 5594 | |||||
| 5595 | if (size != reldyn->_raw_size) | ||||
| 5596 | return 0; | ||||
| 5597 | |||||
| 5598 | sort_elt = (sizeof (struct elf_link_sort_rela) | ||||
| 5599 | + (i2e - 1) * sizeof (Elf_Internal_Rela)); | ||||
| 5600 | sort = bfd_zmalloc (sort_elt * count); | ||||
| 5601 | if (sort == NULL((void*)0)) | ||||
| 5602 | { | ||||
| 5603 | (*info->callbacks->warning) | ||||
| 5604 | (info, _("Not enough memory to sort relocations")("Not enough memory to sort relocations"), 0, abfd, 0, 0); | ||||
| 5605 | return 0; | ||||
| 5606 | } | ||||
| 5607 | |||||
| 5608 | if (bed->s->arch_size == 32) | ||||
| 5609 | r_sym_mask = ~(bfd_vma) 0xff; | ||||
| 5610 | else | ||||
| 5611 | r_sym_mask = ~(bfd_vma) 0xffffffff; | ||||
| 5612 | |||||
| 5613 | for (lo = reldyn->link_order_head; lo != NULL((void*)0); lo = lo->next) | ||||
| 5614 | if (lo->type == bfd_indirect_link_order) | ||||
| 5615 | { | ||||
| 5616 | bfd_byte *erel, *erelend; | ||||
| 5617 | asection *o = lo->u.indirect.section; | ||||
| 5618 | |||||
| 5619 | erel = o->contents; | ||||
| 5620 | erelend = o->contents + o->_raw_size; | ||||
| 5621 | p = sort + o->output_offset / ext_size * sort_elt; | ||||
| 5622 | while (erel < erelend) | ||||
| 5623 | { | ||||
| 5624 | struct elf_link_sort_rela *s = (struct elf_link_sort_rela *) p; | ||||
| 5625 | (*swap_in) (abfd, erel, s->rela); | ||||
| 5626 | s->type = (*bed->elf_backend_reloc_type_class) (s->rela); | ||||
| 5627 | s->u.sym_mask = r_sym_mask; | ||||
| 5628 | p += sort_elt; | ||||
| 5629 | erel += ext_size; | ||||
| 5630 | } | ||||
| 5631 | } | ||||
| 5632 | |||||
| 5633 | qsort (sort, count, sort_elt, elf_link_sort_cmp1); | ||||
| 5634 | |||||
| 5635 | for (i = 0, p = sort; i < count; i++, p += sort_elt) | ||||
| 5636 | { | ||||
| 5637 | struct elf_link_sort_rela *s = (struct elf_link_sort_rela *) p; | ||||
| 5638 | if (s->type != reloc_class_relative) | ||||
| 5639 | break; | ||||
| 5640 | } | ||||
| 5641 | ret = i; | ||||
| 5642 | s_non_relative = p; | ||||
| 5643 | |||||
| 5644 | sq = (struct elf_link_sort_rela *) s_non_relative; | ||||
| 5645 | for (; i < count; i++, p += sort_elt) | ||||
| 5646 | { | ||||
| 5647 | struct elf_link_sort_rela *sp = (struct elf_link_sort_rela *) p; | ||||
| 5648 | if (((sp->rela->r_info ^ sq->rela->r_info) & r_sym_mask) != 0) | ||||
| 5649 | sq = sp; | ||||
| 5650 | sp->u.offset = sq->rela->r_offset; | ||||
| 5651 | } | ||||
| 5652 | |||||
| 5653 | qsort (s_non_relative, count - ret, sort_elt, elf_link_sort_cmp2); | ||||
| 5654 | |||||
| 5655 | for (lo = reldyn->link_order_head; lo != NULL((void*)0); lo = lo->next) | ||||
| 5656 | if (lo->type == bfd_indirect_link_order) | ||||
| 5657 | { | ||||
| 5658 | bfd_byte *erel, *erelend; | ||||
| 5659 | asection *o = lo->u.indirect.section; | ||||
| 5660 | |||||
| 5661 | erel = o->contents; | ||||
| 5662 | erelend = o->contents + o->_raw_size; | ||||
| 5663 | p = sort + o->output_offset / ext_size * sort_elt; | ||||
| 5664 | while (erel < erelend) | ||||
| 5665 | { | ||||
| 5666 | struct elf_link_sort_rela *s = (struct elf_link_sort_rela *) p; | ||||
| 5667 | (*swap_out) (abfd, s->rela, erel); | ||||
| 5668 | p += sort_elt; | ||||
| 5669 | erel += ext_size; | ||||
| 5670 | } | ||||
| 5671 | } | ||||
| 5672 | |||||
| 5673 | free (sort); | ||||
| 5674 | *psec = reldyn; | ||||
| 5675 | return ret; | ||||
| 5676 | } | ||||
| 5677 | |||||
| 5678 | /* Flush the output symbols to the file. */ | ||||
| 5679 | |||||
| 5680 | static bfd_boolean | ||||
| 5681 | elf_link_flush_output_syms (struct elf_final_link_info *finfo, | ||||
| 5682 | const struct elf_backend_data *bed) | ||||
| 5683 | { | ||||
| 5684 | if (finfo->symbuf_count > 0) | ||||
| 5685 | { | ||||
| 5686 | Elf_Internal_Shdr *hdr; | ||||
| 5687 | file_ptr pos; | ||||
| 5688 | bfd_size_type amt; | ||||
| 5689 | |||||
| 5690 | hdr = &elf_tdata (finfo->output_bfd)((finfo->output_bfd) -> tdata.elf_obj_data)->symtab_hdr; | ||||
| 5691 | pos = hdr->sh_offset + hdr->sh_size; | ||||
| 5692 | amt = finfo->symbuf_count * bed->s->sizeof_sym; | ||||
| 5693 | if (bfd_seek (finfo->output_bfd, pos, SEEK_SET0) != 0 | ||||
| 5694 | || bfd_bwrite (finfo->symbuf, amt, finfo->output_bfd) != amt) | ||||
| 5695 | return FALSE0; | ||||
| 5696 | |||||
| 5697 | hdr->sh_size += amt; | ||||
| 5698 | finfo->symbuf_count = 0; | ||||
| 5699 | } | ||||
| 5700 | |||||
| 5701 | return TRUE1; | ||||
| 5702 | } | ||||
| 5703 | |||||
| 5704 | /* Add a symbol to the output symbol table. */ | ||||
| 5705 | |||||
| 5706 | static bfd_boolean | ||||
| 5707 | elf_link_output_sym (struct elf_final_link_info *finfo, | ||||
| 5708 | const char *name, | ||||
| 5709 | Elf_Internal_Sym *elfsym, | ||||
| 5710 | asection *input_sec, | ||||
| 5711 | struct elf_link_hash_entry *h) | ||||
| 5712 | { | ||||
| 5713 | bfd_byte *dest; | ||||
| 5714 | Elf_External_Sym_Shndx *destshndx; | ||||
| 5715 | bfd_boolean (*output_symbol_hook) | ||||
| 5716 | (struct bfd_link_info *, const char *, Elf_Internal_Sym *, asection *, | ||||
| 5717 | struct elf_link_hash_entry *); | ||||
| 5718 | const struct elf_backend_data *bed; | ||||
| 5719 | |||||
| 5720 | bed = get_elf_backend_data (finfo->output_bfd)((const struct elf_backend_data *) (finfo->output_bfd)-> xvec->backend_data); | ||||
| 5721 | output_symbol_hook = bed->elf_backend_link_output_symbol_hook; | ||||
| 5722 | if (output_symbol_hook != NULL((void*)0)) | ||||
| 5723 | { | ||||
| 5724 | if (! (*output_symbol_hook) (finfo->info, name, elfsym, input_sec, h)) | ||||
| 5725 | return FALSE0; | ||||
| 5726 | } | ||||
| 5727 | |||||
| 5728 | if (name == NULL((void*)0) || *name == '\0') | ||||
| 5729 | elfsym->st_name = 0; | ||||
| 5730 | else if (input_sec->flags & SEC_EXCLUDE0x40000) | ||||
| 5731 | elfsym->st_name = 0; | ||||
| 5732 | else | ||||
| 5733 | { | ||||
| 5734 | elfsym->st_name = (unsigned long) _bfd_stringtab_add (finfo->symstrtab, | ||||
| 5735 | name, TRUE1, FALSE0); | ||||
| 5736 | if (elfsym->st_name == (unsigned long) -1) | ||||
| 5737 | return FALSE0; | ||||
| 5738 | } | ||||
| 5739 | |||||
| 5740 | if (finfo->symbuf_count >= finfo->symbuf_size) | ||||
| 5741 | { | ||||
| 5742 | if (! elf_link_flush_output_syms (finfo, bed)) | ||||
| 5743 | return FALSE0; | ||||
| 5744 | } | ||||
| 5745 | |||||
| 5746 | dest = finfo->symbuf + finfo->symbuf_count * bed->s->sizeof_sym; | ||||
| 5747 | destshndx = finfo->symshndxbuf; | ||||
| 5748 | if (destshndx != NULL((void*)0)) | ||||
| 5749 | { | ||||
| 5750 | if (bfd_get_symcount (finfo->output_bfd)((finfo->output_bfd)->symcount) >= finfo->shndxbuf_size) | ||||
| 5751 | { | ||||
| 5752 | bfd_size_type amt; | ||||
| 5753 | |||||
| 5754 | amt = finfo->shndxbuf_size * sizeof (Elf_External_Sym_Shndx); | ||||
| 5755 | finfo->symshndxbuf = destshndx = bfd_realloc (destshndx, amt * 2); | ||||
| 5756 | if (destshndx == NULL((void*)0)) | ||||
| 5757 | return FALSE0; | ||||
| 5758 | memset ((char *) destshndx + amt, 0, amt); | ||||
| 5759 | finfo->shndxbuf_size *= 2; | ||||
| 5760 | } | ||||
| 5761 | destshndx += bfd_get_symcount (finfo->output_bfd)((finfo->output_bfd)->symcount); | ||||
| 5762 | } | ||||
| 5763 | |||||
| 5764 | bed->s->swap_symbol_out (finfo->output_bfd, elfsym, dest, destshndx); | ||||
| 5765 | finfo->symbuf_count += 1; | ||||
| 5766 | bfd_get_symcount (finfo->output_bfd)((finfo->output_bfd)->symcount) += 1; | ||||
| 5767 | |||||
| 5768 | return TRUE1; | ||||
| 5769 | } | ||||
| 5770 | |||||
| 5771 | /* For DSOs loaded in via a DT_NEEDED entry, emulate ld.so in | ||||
| 5772 | allowing an unsatisfied unversioned symbol in the DSO to match a | ||||
| 5773 | versioned symbol that would normally require an explicit version. | ||||
| 5774 | We also handle the case that a DSO references a hidden symbol | ||||
| 5775 | which may be satisfied by a versioned symbol in another DSO. */ | ||||
| 5776 | |||||
| 5777 | static bfd_boolean | ||||
| 5778 | elf_link_check_versioned_symbol (struct bfd_link_info *info, | ||||
| 5779 | const struct elf_backend_data *bed, | ||||
| 5780 | struct elf_link_hash_entry *h) | ||||
| 5781 | { | ||||
| 5782 | bfd *abfd; | ||||
| 5783 | struct elf_link_loaded_list *loaded; | ||||
| 5784 | |||||
| 5785 | if (!is_elf_hash_table (info->hash)(((struct bfd_link_hash_table *) (info->hash))->type == bfd_link_elf_hash_table)) | ||||
| 5786 | return FALSE0; | ||||
| 5787 | |||||
| 5788 | switch (h->root.type) | ||||
| 5789 | { | ||||
| 5790 | default: | ||||
| 5791 | abfd = NULL((void*)0); | ||||
| 5792 | break; | ||||
| 5793 | |||||
| 5794 | case bfd_link_hash_undefined: | ||||
| 5795 | case bfd_link_hash_undefweak: | ||||
| 5796 | abfd = h->root.u.undef.abfd; | ||||
| 5797 | if ((abfd->flags & DYNAMIC0x40) == 0 | ||||
| 5798 | || elf_dyn_lib_class (abfd)(((abfd) -> tdata.elf_obj_data) -> dyn_lib_class) != DYN_DT_NEEDED) | ||||
| 5799 | return FALSE0; | ||||
| 5800 | break; | ||||
| 5801 | |||||
| 5802 | case bfd_link_hash_defined: | ||||
| 5803 | case bfd_link_hash_defweak: | ||||
| 5804 | abfd = h->root.u.def.section->owner; | ||||
| 5805 | break; | ||||
| 5806 | |||||
| 5807 | case bfd_link_hash_common: | ||||
| 5808 | abfd = h->root.u.c.p->section->owner; | ||||
| 5809 | break; | ||||
| 5810 | } | ||||
| 5811 | BFD_ASSERT (abfd != NULL){ if (!(abfd != ((void*)0))) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,5811); }; | ||||
| 5812 | |||||
| 5813 | for (loaded = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->loaded; | ||||
| 5814 | loaded != NULL((void*)0); | ||||
| 5815 | loaded = loaded->next) | ||||
| 5816 | { | ||||
| 5817 | bfd *input; | ||||
| 5818 | Elf_Internal_Shdr *hdr; | ||||
| 5819 | bfd_size_type symcount; | ||||
| 5820 | bfd_size_type extsymcount; | ||||
| 5821 | bfd_size_type extsymoff; | ||||
| 5822 | Elf_Internal_Shdr *versymhdr; | ||||
| 5823 | Elf_Internal_Sym *isym; | ||||
| 5824 | Elf_Internal_Sym *isymend; | ||||
| 5825 | Elf_Internal_Sym *isymbuf; | ||||
| 5826 | Elf_External_Versym *ever; | ||||
| 5827 | Elf_External_Versym *extversym; | ||||
| 5828 | |||||
| 5829 | input = loaded->abfd; | ||||
| 5830 | |||||
| 5831 | /* We check each DSO for a possible hidden versioned definition. */ | ||||
| 5832 | if (input == abfd | ||||
| 5833 | || (input->flags & DYNAMIC0x40) == 0 | ||||
| 5834 | || elf_dynversym (input)(((input) -> tdata.elf_obj_data) -> dynversym_section) == 0) | ||||
| 5835 | continue; | ||||
| 5836 | |||||
| 5837 | hdr = &elf_tdata (input)((input) -> tdata.elf_obj_data)->dynsymtab_hdr; | ||||
| 5838 | |||||
| 5839 | symcount = hdr->sh_size / bed->s->sizeof_sym; | ||||
| 5840 | if (elf_bad_symtab (input)(((input) -> tdata.elf_obj_data) -> bad_symtab)) | ||||
| 5841 | { | ||||
| 5842 | extsymcount = symcount; | ||||
| 5843 | extsymoff = 0; | ||||
| 5844 | } | ||||
| 5845 | else | ||||
| 5846 | { | ||||
| 5847 | extsymcount = symcount - hdr->sh_info; | ||||
| 5848 | extsymoff = hdr->sh_info; | ||||
| 5849 | } | ||||
| 5850 | |||||
| 5851 | if (extsymcount == 0) | ||||
| 5852 | continue; | ||||
| 5853 | |||||
| 5854 | isymbuf = bfd_elf_get_elf_syms (input, hdr, extsymcount, extsymoff, | ||||
| 5855 | NULL((void*)0), NULL((void*)0), NULL((void*)0)); | ||||
| 5856 | if (isymbuf == NULL((void*)0)) | ||||
| 5857 | return FALSE0; | ||||
| 5858 | |||||
| 5859 | /* Read in any version definitions. */ | ||||
| 5860 | versymhdr = &elf_tdata (input)((input) -> tdata.elf_obj_data)->dynversym_hdr; | ||||
| 5861 | extversym = bfd_malloc (versymhdr->sh_size); | ||||
| 5862 | if (extversym == NULL((void*)0)) | ||||
| 5863 | goto error_ret; | ||||
| 5864 | |||||
| 5865 | if (bfd_seek (input, versymhdr->sh_offset, SEEK_SET0) != 0 | ||||
| 5866 | || (bfd_bread (extversym, versymhdr->sh_size, input) | ||||
| 5867 | != versymhdr->sh_size)) | ||||
| 5868 | { | ||||
| 5869 | free (extversym); | ||||
| 5870 | error_ret: | ||||
| 5871 | free (isymbuf); | ||||
| 5872 | return FALSE0; | ||||
| 5873 | } | ||||
| 5874 | |||||
| 5875 | ever = extversym + extsymoff; | ||||
| 5876 | isymend = isymbuf + extsymcount; | ||||
| 5877 | for (isym = isymbuf; isym < isymend; isym++, ever++) | ||||
| 5878 | { | ||||
| 5879 | const char *name; | ||||
| 5880 | Elf_Internal_Versym iver; | ||||
| 5881 | unsigned short version_index; | ||||
| 5882 | |||||
| 5883 | if (ELF_ST_BIND (isym->st_info)(((unsigned int)(isym->st_info)) >> 4) == STB_LOCAL0 | ||||
| 5884 | || isym->st_shndx == SHN_UNDEF0) | ||||
| 5885 | continue; | ||||
| 5886 | |||||
| 5887 | name = bfd_elf_string_from_elf_section (input, | ||||
| 5888 | hdr->sh_link, | ||||
| 5889 | isym->st_name); | ||||
| 5890 | if (strcmp (name, h->root.root.string) != 0) | ||||
| 5891 | continue; | ||||
| 5892 | |||||
| 5893 | _bfd_elf_swap_versym_in (input, ever, &iver); | ||||
| 5894 | |||||
| 5895 | if ((iver.vs_vers & VERSYM_HIDDEN0x8000) == 0) | ||||
| 5896 | { | ||||
| 5897 | /* If we have a non-hidden versioned sym, then it should | ||||
| 5898 | have provided a definition for the undefined sym. */ | ||||
| 5899 | abort ()_bfd_abort ("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c", 5899 , __PRETTY_FUNCTION__); | ||||
| 5900 | } | ||||
| 5901 | |||||
| 5902 | version_index = iver.vs_vers & VERSYM_VERSION0x7fff; | ||||
| 5903 | if (version_index == 1 || version_index == 2) | ||||
| 5904 | { | ||||
| 5905 | /* This is the base or first version. We can use it. */ | ||||
| 5906 | free (extversym); | ||||
| 5907 | free (isymbuf); | ||||
| 5908 | return TRUE1; | ||||
| 5909 | } | ||||
| 5910 | } | ||||
| 5911 | |||||
| 5912 | free (extversym); | ||||
| 5913 | free (isymbuf); | ||||
| 5914 | } | ||||
| 5915 | |||||
| 5916 | return FALSE0; | ||||
| 5917 | } | ||||
| 5918 | |||||
| 5919 | /* Add an external symbol to the symbol table. This is called from | ||||
| 5920 | the hash table traversal routine. When generating a shared object, | ||||
| 5921 | we go through the symbol table twice. The first time we output | ||||
| 5922 | anything that might have been forced to local scope in a version | ||||
| 5923 | script. The second time we output the symbols that are still | ||||
| 5924 | global symbols. */ | ||||
| 5925 | |||||
| 5926 | static bfd_boolean | ||||
| 5927 | elf_link_output_extsym (struct elf_link_hash_entry *h, void *data) | ||||
| 5928 | { | ||||
| 5929 | struct elf_outext_info *eoinfo = data; | ||||
| 5930 | struct elf_final_link_info *finfo = eoinfo->finfo; | ||||
| 5931 | bfd_boolean strip; | ||||
| 5932 | Elf_Internal_Sym sym; | ||||
| 5933 | asection *input_sec; | ||||
| 5934 | const struct elf_backend_data *bed; | ||||
| 5935 | |||||
| 5936 | if (h->root.type == bfd_link_hash_warning) | ||||
| 5937 | { | ||||
| 5938 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | ||||
| 5939 | if (h->root.type == bfd_link_hash_new) | ||||
| 5940 | return TRUE1; | ||||
| 5941 | } | ||||
| 5942 | |||||
| 5943 | /* Decide whether to output this symbol in this pass. */ | ||||
| 5944 | if (eoinfo->localsyms) | ||||
| 5945 | { | ||||
| 5946 | if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL02000) == 0) | ||||
| 5947 | return TRUE1; | ||||
| 5948 | } | ||||
| 5949 | else | ||||
| 5950 | { | ||||
| 5951 | if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL02000) != 0) | ||||
| 5952 | return TRUE1; | ||||
| 5953 | } | ||||
| 5954 | |||||
| 5955 | bed = get_elf_backend_data (finfo->output_bfd)((const struct elf_backend_data *) (finfo->output_bfd)-> xvec->backend_data); | ||||
| 5956 | |||||
| 5957 | /* If we have an undefined symbol reference here then it must have | ||||
| 5958 | come from a shared library that is being linked in. (Undefined | ||||
| 5959 | references in regular files have already been handled). If we | ||||
| 5960 | are reporting errors for this situation then do so now. */ | ||||
| 5961 | if (h->root.type == bfd_link_hash_undefined | ||||
| 5962 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC04) != 0 | ||||
| 5963 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR01) == 0 | ||||
| 5964 | && ! elf_link_check_versioned_symbol (finfo->info, bed, h) | ||||
| 5965 | && finfo->info->unresolved_syms_in_shared_libs != RM_IGNORE) | ||||
| 5966 | { | ||||
| 5967 | if (! ((*finfo->info->callbacks->undefined_symbol) | ||||
| 5968 | (finfo->info, h->root.root.string, h->root.u.undef.abfd, | ||||
| 5969 | NULL((void*)0), 0, finfo->info->unresolved_syms_in_shared_libs == RM_GENERATE_ERROR))) | ||||
| 5970 | { | ||||
| 5971 | eoinfo->failed = TRUE1; | ||||
| 5972 | return FALSE0; | ||||
| 5973 | } | ||||
| 5974 | } | ||||
| 5975 | |||||
| 5976 | /* We should also warn if a forced local symbol is referenced from | ||||
| 5977 | shared libraries. */ | ||||
| 5978 | if (! finfo->info->relocatable | ||||
| 5979 | && (! finfo->info->shared) | ||||
| 5980 | && (h->elf_link_hash_flags | ||||
| 5981 | & (ELF_LINK_FORCED_LOCAL02000 | ELF_LINK_HASH_REF_DYNAMIC04 | ELF_LINK_DYNAMIC_DEF020000 | ELF_LINK_DYNAMIC_WEAK040000)) | ||||
| 5982 | == (ELF_LINK_FORCED_LOCAL02000 | ELF_LINK_HASH_REF_DYNAMIC04) | ||||
| 5983 | && ! elf_link_check_versioned_symbol (finfo->info, bed, h)) | ||||
| 5984 | { | ||||
| 5985 | (*_bfd_error_handler) | ||||
| 5986 | (_("%s: %s symbol `%s' in %s is referenced by DSO")("%s: %s symbol `%s' in %s is referenced by DSO"), | ||||
| 5987 | bfd_get_filename (finfo->output_bfd)((char *) (finfo->output_bfd)->filename), | ||||
| 5988 | ELF_ST_VISIBILITY (h->other)((h->other) & 0x3) == STV_INTERNAL1 | ||||
| 5989 | ? "internal" | ||||
| 5990 | : ELF_ST_VISIBILITY (h->other)((h->other) & 0x3) == STV_HIDDEN2 | ||||
| 5991 | ? "hidden" : "local", | ||||
| 5992 | h->root.root.string, | ||||
| 5993 | bfd_archive_filename (h->root.u.def.section->owner)); | ||||
| 5994 | eoinfo->failed = TRUE1; | ||||
| 5995 | return FALSE0; | ||||
| 5996 | } | ||||
| 5997 | |||||
| 5998 | /* We don't want to output symbols that have never been mentioned by | ||||
| 5999 | a regular file, or that we have been told to strip. However, if | ||||
| 6000 | h->indx is set to -2, the symbol is used by a reloc and we must | ||||
| 6001 | output it. */ | ||||
| 6002 | if (h->indx == -2) | ||||
| 6003 | strip = FALSE0; | ||||
| 6004 | else if (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC010) != 0 | ||||
| 6005 | || (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC04) != 0) | ||||
| 6006 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR02) == 0 | ||||
| 6007 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR01) == 0) | ||||
| 6008 | strip = TRUE1; | ||||
| 6009 | else if (finfo->info->strip == strip_all) | ||||
| 6010 | strip = TRUE1; | ||||
| 6011 | else if (finfo->info->strip == strip_some | ||||
| 6012 | && bfd_hash_lookup (finfo->info->keep_hash, | ||||
| 6013 | h->root.root.string, FALSE0, FALSE0) == NULL((void*)0)) | ||||
| 6014 | strip = TRUE1; | ||||
| 6015 | else if (finfo->info->strip_discarded | ||||
| 6016 | && (h->root.type == bfd_link_hash_defined | ||||
| 6017 | || h->root.type == bfd_link_hash_defweak) | ||||
| 6018 | && elf_discarded_section (h->root.u.def.section)(!((h->root.u.def.section) == ((asection *) &bfd_abs_section )) && (((h->root.u.def.section)->output_section ) == ((asection *) &bfd_abs_section)) && h->root .u.def.section->sec_info_type != 2 && h->root.u .def.section->sec_info_type != 4)) | ||||
| 6019 | strip = TRUE1; | ||||
| 6020 | else | ||||
| 6021 | strip = FALSE0; | ||||
| 6022 | |||||
| 6023 | /* If we're stripping it, and it's not a dynamic symbol, there's | ||||
| 6024 | nothing else to do unless it is a forced local symbol. */ | ||||
| 6025 | if (strip | ||||
| 6026 | && h->dynindx == -1 | ||||
| 6027 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL02000) == 0) | ||||
| 6028 | return TRUE1; | ||||
| 6029 | |||||
| 6030 | sym.st_value = 0; | ||||
| 6031 | sym.st_size = h->size; | ||||
| 6032 | sym.st_other = h->other; | ||||
| 6033 | if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL02000) != 0) | ||||
| 6034 | sym.st_info = ELF_ST_INFO (STB_LOCAL, h->type)(((0) << 4) + ((h->type) & 0xF)); | ||||
| 6035 | else if (h->root.type == bfd_link_hash_undefweak | ||||
| 6036 | || h->root.type == bfd_link_hash_defweak) | ||||
| 6037 | sym.st_info = ELF_ST_INFO (STB_WEAK, h->type)(((2) << 4) + ((h->type) & 0xF)); | ||||
| 6038 | else | ||||
| 6039 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, h->type)(((1) << 4) + ((h->type) & 0xF)); | ||||
| 6040 | |||||
| 6041 | switch (h->root.type) | ||||
| 6042 | { | ||||
| 6043 | default: | ||||
| 6044 | case bfd_link_hash_new: | ||||
| 6045 | case bfd_link_hash_warning: | ||||
| 6046 | abort ()_bfd_abort ("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c", 6046 , __PRETTY_FUNCTION__); | ||||
| 6047 | return FALSE0; | ||||
| 6048 | |||||
| 6049 | case bfd_link_hash_undefined: | ||||
| 6050 | case bfd_link_hash_undefweak: | ||||
| 6051 | input_sec = bfd_und_section_ptr((asection *) &bfd_und_section); | ||||
| 6052 | sym.st_shndx = SHN_UNDEF0; | ||||
| 6053 | break; | ||||
| 6054 | |||||
| 6055 | case bfd_link_hash_defined: | ||||
| 6056 | case bfd_link_hash_defweak: | ||||
| 6057 | { | ||||
| 6058 | input_sec = h->root.u.def.section; | ||||
| 6059 | if (input_sec->output_section != NULL((void*)0)) | ||||
| 6060 | { | ||||
| 6061 | sym.st_shndx = | ||||
| 6062 | _bfd_elf_section_from_bfd_section (finfo->output_bfd, | ||||
| 6063 | input_sec->output_section); | ||||
| 6064 | if (sym.st_shndx == SHN_BAD((unsigned) -1)) | ||||
| 6065 | { | ||||
| 6066 | (*_bfd_error_handler) | ||||
| 6067 | (_("%s: could not find output section %s for input section %s")("%s: could not find output section %s for input section %s"), | ||||
| 6068 | bfd_get_filename (finfo->output_bfd)((char *) (finfo->output_bfd)->filename), | ||||
| 6069 | input_sec->output_section->name, | ||||
| 6070 | input_sec->name); | ||||
| 6071 | eoinfo->failed = TRUE1; | ||||
| 6072 | return FALSE0; | ||||
| 6073 | } | ||||
| 6074 | |||||
| 6075 | /* ELF symbols in relocatable files are section relative, | ||||
| 6076 | but in nonrelocatable files they are virtual | ||||
| 6077 | addresses. */ | ||||
| 6078 | sym.st_value = h->root.u.def.value + input_sec->output_offset; | ||||
| 6079 | if (! finfo->info->relocatable) | ||||
| 6080 | { | ||||
| 6081 | sym.st_value += input_sec->output_section->vma; | ||||
| 6082 | if (h->type == STT_TLS6) | ||||
| 6083 | { | ||||
| 6084 | /* STT_TLS symbols are relative to PT_TLS segment | ||||
| 6085 | base. */ | ||||
| 6086 | BFD_ASSERT (elf_hash_table (finfo->info)->tls_sec != NULL){ if (!(((struct elf_link_hash_table *) ((finfo->info)-> hash))->tls_sec != ((void*)0))) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,6086); }; | ||||
| 6087 | sym.st_value -= elf_hash_table (finfo->info)((struct elf_link_hash_table *) ((finfo->info)->hash))->tls_sec->vma; | ||||
| 6088 | } | ||||
| 6089 | } | ||||
| 6090 | } | ||||
| 6091 | else | ||||
| 6092 | { | ||||
| 6093 | BFD_ASSERT (input_sec->owner == NULL{ if (!(input_sec->owner == ((void*)0) || (input_sec->owner ->flags & 0x40) != 0)) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,6094); } | ||||
| 6094 | || (input_sec->owner->flags & DYNAMIC) != 0){ if (!(input_sec->owner == ((void*)0) || (input_sec->owner ->flags & 0x40) != 0)) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,6094); }; | ||||
| 6095 | sym.st_shndx = SHN_UNDEF0; | ||||
| 6096 | input_sec = bfd_und_section_ptr((asection *) &bfd_und_section); | ||||
| 6097 | } | ||||
| 6098 | } | ||||
| 6099 | break; | ||||
| 6100 | |||||
| 6101 | case bfd_link_hash_common: | ||||
| 6102 | input_sec = h->root.u.c.p->section; | ||||
| 6103 | sym.st_shndx = SHN_COMMON0xFFF2; | ||||
| 6104 | sym.st_value = 1 << h->root.u.c.p->alignment_power; | ||||
| 6105 | break; | ||||
| 6106 | |||||
| 6107 | case bfd_link_hash_indirect: | ||||
| 6108 | /* These symbols are created by symbol versioning. They point | ||||
| 6109 | to the decorated version of the name. For example, if the | ||||
| 6110 | symbol foo@@GNU_1.2 is the default, which should be used when | ||||
| 6111 | foo is used with no version, then we add an indirect symbol | ||||
| 6112 | foo which points to foo@@GNU_1.2. We ignore these symbols, | ||||
| 6113 | since the indirected symbol is already in the hash table. */ | ||||
| 6114 | return TRUE1; | ||||
| 6115 | } | ||||
| 6116 | |||||
| 6117 | /* Give the processor backend a chance to tweak the symbol value, | ||||
| 6118 | and also to finish up anything that needs to be done for this | ||||
| 6119 | symbol. FIXME: Not calling elf_backend_finish_dynamic_symbol for | ||||
| 6120 | forced local syms when non-shared is due to a historical quirk. */ | ||||
| 6121 | if ((h->dynindx != -1 | ||||
| 6122 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL02000) != 0) | ||||
| 6123 | && ((finfo->info->shared | ||||
| 6124 | && (ELF_ST_VISIBILITY (h->other)((h->other) & 0x3) == STV_DEFAULT0 | ||||
| 6125 | || h->root.type != bfd_link_hash_undefweak)) | ||||
| 6126 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL02000) == 0) | ||||
| 6127 | && elf_hash_table (finfo->info)((struct elf_link_hash_table *) ((finfo->info)->hash))->dynamic_sections_created) | ||||
| 6128 | { | ||||
| 6129 | if (! ((*bed->elf_backend_finish_dynamic_symbol) | ||||
| 6130 | (finfo->output_bfd, finfo->info, h, &sym))) | ||||
| 6131 | { | ||||
| 6132 | eoinfo->failed = TRUE1; | ||||
| 6133 | return FALSE0; | ||||
| 6134 | } | ||||
| 6135 | } | ||||
| 6136 | |||||
| 6137 | /* If we are marking the symbol as undefined, and there are no | ||||
| 6138 | non-weak references to this symbol from a regular object, then | ||||
| 6139 | mark the symbol as weak undefined; if there are non-weak | ||||
| 6140 | references, mark the symbol as strong. We can't do this earlier, | ||||
| 6141 | because it might not be marked as undefined until the | ||||
| 6142 | finish_dynamic_symbol routine gets through with it. */ | ||||
| 6143 | if (sym.st_shndx == SHN_UNDEF0 | ||||
| 6144 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR01) != 0 | ||||
| 6145 | && (ELF_ST_BIND (sym.st_info)(((unsigned int)(sym.st_info)) >> 4) == STB_GLOBAL1 | ||||
| 6146 | || ELF_ST_BIND (sym.st_info)(((unsigned int)(sym.st_info)) >> 4) == STB_WEAK2)) | ||||
| 6147 | { | ||||
| 6148 | int bindtype; | ||||
| 6149 | |||||
| 6150 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK020) != 0) | ||||
| 6151 | bindtype = STB_GLOBAL1; | ||||
| 6152 | else | ||||
| 6153 | bindtype = STB_WEAK2; | ||||
| 6154 | sym.st_info = ELF_ST_INFO (bindtype, ELF_ST_TYPE (sym.st_info))(((bindtype) << 4) + ((((sym.st_info) & 0xF)) & 0xF)); | ||||
| 6155 | } | ||||
| 6156 | |||||
| 6157 | /* If a non-weak symbol with non-default visibility is not defined | ||||
| 6158 | locally, it is a fatal error. */ | ||||
| 6159 | if (! finfo->info->relocatable | ||||
| 6160 | && ELF_ST_VISIBILITY (sym.st_other)((sym.st_other) & 0x3) != STV_DEFAULT0 | ||||
| 6161 | && ELF_ST_BIND (sym.st_info)(((unsigned int)(sym.st_info)) >> 4) != STB_WEAK2 | ||||
| 6162 | && h->root.type == bfd_link_hash_undefined | ||||
| 6163 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR02) == 0) | ||||
| 6164 | { | ||||
| 6165 | (*_bfd_error_handler) | ||||
| 6166 | (_("%s: %s symbol `%s' isn't defined")("%s: %s symbol `%s' isn't defined"), | ||||
| 6167 | bfd_get_filename (finfo->output_bfd)((char *) (finfo->output_bfd)->filename), | ||||
| 6168 | ELF_ST_VISIBILITY (sym.st_other)((sym.st_other) & 0x3) == STV_PROTECTED3 | ||||
| 6169 | ? "protected" | ||||
| 6170 | : ELF_ST_VISIBILITY (sym.st_other)((sym.st_other) & 0x3) == STV_INTERNAL1 | ||||
| 6171 | ? "internal" : "hidden", | ||||
| 6172 | h->root.root.string); | ||||
| 6173 | eoinfo->failed = TRUE1; | ||||
| 6174 | return FALSE0; | ||||
| 6175 | } | ||||
| 6176 | |||||
| 6177 | /* If this symbol should be put in the .dynsym section, then put it | ||||
| 6178 | there now. We already know the symbol index. We also fill in | ||||
| 6179 | the entry in the .hash section. */ | ||||
| 6180 | if (h->dynindx != -1 | ||||
| 6181 | && elf_hash_table (finfo->info)((struct elf_link_hash_table *) ((finfo->info)->hash))->dynamic_sections_created) | ||||
| 6182 | { | ||||
| 6183 | size_t bucketcount; | ||||
| 6184 | size_t bucket; | ||||
| 6185 | size_t hash_entry_size; | ||||
| 6186 | bfd_byte *bucketpos; | ||||
| 6187 | bfd_vma chain; | ||||
| 6188 | bfd_byte *esym; | ||||
| 6189 | |||||
| 6190 | sym.st_name = h->dynstr_index; | ||||
| 6191 | esym = finfo->dynsym_sec->contents + h->dynindx * bed->s->sizeof_sym; | ||||
| 6192 | bed->s->swap_symbol_out (finfo->output_bfd, &sym, esym, 0); | ||||
| 6193 | |||||
| 6194 | bucketcount = elf_hash_table (finfo->info)((struct elf_link_hash_table *) ((finfo->info)->hash))->bucketcount; | ||||
| 6195 | bucket = h->elf_hash_value % bucketcount; | ||||
| 6196 | hash_entry_size | ||||
| 6197 | = elf_section_data (finfo->hash_sec)((struct bfd_elf_section_data*)finfo->hash_sec->used_by_bfd )->this_hdr.sh_entsize; | ||||
| 6198 | bucketpos = ((bfd_byte *) finfo->hash_sec->contents | ||||
| 6199 | + (bucket + 2) * hash_entry_size); | ||||
| 6200 | chain = bfd_get (8 * hash_entry_size, finfo->output_bfd, bucketpos)((8 * hash_entry_size) == 8 ? (bfd_vma) (*(unsigned char *) ( bucketpos) & 0xff) : (8 * hash_entry_size) == 16 ? ((*((finfo ->output_bfd)->xvec->bfd_getx16)) (bucketpos)) : (8 * hash_entry_size) == 32 ? ((*((finfo->output_bfd)->xvec ->bfd_getx32)) (bucketpos)) : (8 * hash_entry_size) == 64 ? ((*((finfo->output_bfd)->xvec->bfd_getx64)) (bucketpos )) : (_bfd_abort ("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" , 6200, __PRETTY_FUNCTION__), (bfd_vma) - 1)); | ||||
| 6201 | bfd_put (8 * hash_entry_size, finfo->output_bfd, h->dynindx, bucketpos)((8 * hash_entry_size) == 8 ? ((void) (*((unsigned char *) (bucketpos )) = (h->dynindx) & 0xff)) : (8 * hash_entry_size) == 16 ? ((*((finfo->output_bfd)->xvec->bfd_putx16)) ((h-> dynindx),(bucketpos))) : (8 * hash_entry_size) == 32 ? ((*((finfo ->output_bfd)->xvec->bfd_putx32)) ((h->dynindx),( bucketpos))) : (8 * hash_entry_size) == 64 ? ((*((finfo->output_bfd )->xvec->bfd_putx64)) ((h->dynindx), (bucketpos))) : (_bfd_abort ("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c", 6201 , __PRETTY_FUNCTION__), (void) 0)); | ||||
| 6202 | bfd_put (8 * hash_entry_size, finfo->output_bfd, chain,((8 * hash_entry_size) == 8 ? ((void) (*((unsigned char *) (( (bfd_byte *) finfo->hash_sec->contents + (bucketcount + 2 + h->dynindx) * hash_entry_size))) = (chain) & 0xff )) : (8 * hash_entry_size) == 16 ? ((*((finfo->output_bfd) ->xvec->bfd_putx16)) ((chain),(((bfd_byte *) finfo-> hash_sec->contents + (bucketcount + 2 + h->dynindx) * hash_entry_size )))) : (8 * hash_entry_size) == 32 ? ((*((finfo->output_bfd )->xvec->bfd_putx32)) ((chain),(((bfd_byte *) finfo-> hash_sec->contents + (bucketcount + 2 + h->dynindx) * hash_entry_size )))) : (8 * hash_entry_size) == 64 ? ((*((finfo->output_bfd )->xvec->bfd_putx64)) ((chain), (((bfd_byte *) finfo-> hash_sec->contents + (bucketcount + 2 + h->dynindx) * hash_entry_size )))) : (_bfd_abort ("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" , 6204, __PRETTY_FUNCTION__), (void) 0)) | ||||
| 6203 | ((bfd_byte *) finfo->hash_sec->contents((8 * hash_entry_size) == 8 ? ((void) (*((unsigned char *) (( (bfd_byte *) finfo->hash_sec->contents + (bucketcount + 2 + h->dynindx) * hash_entry_size))) = (chain) & 0xff )) : (8 * hash_entry_size) == 16 ? ((*((finfo->output_bfd) ->xvec->bfd_putx16)) ((chain),(((bfd_byte *) finfo-> hash_sec->contents + (bucketcount + 2 + h->dynindx) * hash_entry_size )))) : (8 * hash_entry_size) == 32 ? ((*((finfo->output_bfd )->xvec->bfd_putx32)) ((chain),(((bfd_byte *) finfo-> hash_sec->contents + (bucketcount + 2 + h->dynindx) * hash_entry_size )))) : (8 * hash_entry_size) == 64 ? ((*((finfo->output_bfd )->xvec->bfd_putx64)) ((chain), (((bfd_byte *) finfo-> hash_sec->contents + (bucketcount + 2 + h->dynindx) * hash_entry_size )))) : (_bfd_abort ("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" , 6204, __PRETTY_FUNCTION__), (void) 0)) | ||||
| 6204 | + (bucketcount + 2 + h->dynindx) * hash_entry_size))((8 * hash_entry_size) == 8 ? ((void) (*((unsigned char *) (( (bfd_byte *) finfo->hash_sec->contents + (bucketcount + 2 + h->dynindx) * hash_entry_size))) = (chain) & 0xff )) : (8 * hash_entry_size) == 16 ? ((*((finfo->output_bfd) ->xvec->bfd_putx16)) ((chain),(((bfd_byte *) finfo-> hash_sec->contents + (bucketcount + 2 + h->dynindx) * hash_entry_size )))) : (8 * hash_entry_size) == 32 ? ((*((finfo->output_bfd )->xvec->bfd_putx32)) ((chain),(((bfd_byte *) finfo-> hash_sec->contents + (bucketcount + 2 + h->dynindx) * hash_entry_size )))) : (8 * hash_entry_size) == 64 ? ((*((finfo->output_bfd )->xvec->bfd_putx64)) ((chain), (((bfd_byte *) finfo-> hash_sec->contents + (bucketcount + 2 + h->dynindx) * hash_entry_size )))) : (_bfd_abort ("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" , 6204, __PRETTY_FUNCTION__), (void) 0)); | ||||
| 6205 | |||||
| 6206 | if (finfo->symver_sec != NULL((void*)0) && finfo->symver_sec->contents != NULL((void*)0)) | ||||
| 6207 | { | ||||
| 6208 | Elf_Internal_Versym iversym; | ||||
| 6209 | Elf_External_Versym *eversym; | ||||
| 6210 | |||||
| 6211 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR02) == 0) | ||||
| 6212 | { | ||||
| 6213 | if (h->verinfo.verdef == NULL((void*)0)) | ||||
| 6214 | iversym.vs_vers = 0; | ||||
| 6215 | else | ||||
| 6216 | iversym.vs_vers = h->verinfo.verdef->vd_exp_refno + 1; | ||||
| 6217 | } | ||||
| 6218 | else | ||||
| 6219 | { | ||||
| 6220 | if (h->verinfo.vertree == NULL((void*)0)) | ||||
| 6221 | iversym.vs_vers = 1; | ||||
| 6222 | else | ||||
| 6223 | iversym.vs_vers = h->verinfo.vertree->vernum + 1; | ||||
| 6224 | } | ||||
| 6225 | |||||
| 6226 | if ((h->elf_link_hash_flags & ELF_LINK_HIDDEN01000) != 0) | ||||
| 6227 | iversym.vs_vers |= VERSYM_HIDDEN0x8000; | ||||
| 6228 | |||||
| 6229 | eversym = (Elf_External_Versym *) finfo->symver_sec->contents; | ||||
| 6230 | eversym += h->dynindx; | ||||
| 6231 | _bfd_elf_swap_versym_out (finfo->output_bfd, &iversym, eversym); | ||||
| 6232 | } | ||||
| 6233 | } | ||||
| 6234 | |||||
| 6235 | /* If we're stripping it, then it was just a dynamic symbol, and | ||||
| 6236 | there's nothing else to do. */ | ||||
| 6237 | if (strip || (input_sec->flags & SEC_EXCLUDE0x40000) != 0) | ||||
| 6238 | return TRUE1; | ||||
| 6239 | |||||
| 6240 | h->indx = bfd_get_symcount (finfo->output_bfd)((finfo->output_bfd)->symcount); | ||||
| 6241 | |||||
| 6242 | if (! elf_link_output_sym (finfo, h->root.root.string, &sym, input_sec, h)) | ||||
| 6243 | { | ||||
| 6244 | eoinfo->failed = TRUE1; | ||||
| 6245 | return FALSE0; | ||||
| 6246 | } | ||||
| 6247 | |||||
| 6248 | return TRUE1; | ||||
| 6249 | } | ||||
| 6250 | |||||
| 6251 | static bfd_boolean | ||||
| 6252 | elf_section_ignore_discarded_relocs (asection *sec) | ||||
| 6253 | { | ||||
| 6254 | const struct elf_backend_data *bed; | ||||
| 6255 | |||||
| 6256 | switch (sec->sec_info_type) | ||||
| 6257 | { | ||||
| 6258 | case ELF_INFO_TYPE_STABS1: | ||||
| 6259 | case ELF_INFO_TYPE_EH_FRAME3: | ||||
| 6260 | return TRUE1; | ||||
| 6261 | default: | ||||
| 6262 | break; | ||||
| 6263 | } | ||||
| 6264 | |||||
| 6265 | bed = get_elf_backend_data (sec->owner)((const struct elf_backend_data *) (sec->owner)->xvec-> backend_data); | ||||
| 6266 | if (bed->elf_backend_ignore_discarded_relocs != NULL((void*)0) | ||||
| 6267 | && (*bed->elf_backend_ignore_discarded_relocs) (sec)) | ||||
| 6268 | return TRUE1; | ||||
| 6269 | |||||
| 6270 | return FALSE0; | ||||
| 6271 | } | ||||
| 6272 | |||||
| 6273 | /* Link an input file into the linker output file. This function | ||||
| 6274 | handles all the sections and relocations of the input file at once. | ||||
| 6275 | This is so that we only have to read the local symbols once, and | ||||
| 6276 | don't have to keep them in memory. */ | ||||
| 6277 | |||||
| 6278 | static bfd_boolean | ||||
| 6279 | elf_link_input_bfd (struct elf_final_link_info *finfo, bfd *input_bfd) | ||||
| 6280 | { | ||||
| 6281 | bfd_boolean (*relocate_section) | ||||
| 6282 | (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | ||||
| 6283 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **); | ||||
| 6284 | bfd *output_bfd; | ||||
| 6285 | Elf_Internal_Shdr *symtab_hdr; | ||||
| 6286 | size_t locsymcount; | ||||
| 6287 | size_t extsymoff; | ||||
| 6288 | Elf_Internal_Sym *isymbuf; | ||||
| 6289 | Elf_Internal_Sym *isym; | ||||
| 6290 | Elf_Internal_Sym *isymend; | ||||
| 6291 | long *pindex; | ||||
| 6292 | asection **ppsection; | ||||
| 6293 | asection *o; | ||||
| 6294 | const struct elf_backend_data *bed; | ||||
| 6295 | bfd_boolean emit_relocs; | ||||
| 6296 | struct elf_link_hash_entry **sym_hashes; | ||||
| 6297 | |||||
| 6298 | output_bfd = finfo->output_bfd; | ||||
| 6299 | bed = get_elf_backend_data (output_bfd)((const struct elf_backend_data *) (output_bfd)->xvec-> backend_data); | ||||
| 6300 | relocate_section = bed->elf_backend_relocate_section; | ||||
| 6301 | |||||
| 6302 | /* If this is a dynamic object, we don't want to do anything here: | ||||
| 6303 | we don't want the local symbols, and we don't want the section | ||||
| 6304 | contents. */ | ||||
| 6305 | if ((input_bfd->flags & DYNAMIC0x40) != 0) | ||||
| |||||
| 6306 | return TRUE1; | ||||
| 6307 | |||||
| 6308 | emit_relocs = (finfo->info->relocatable | ||||
| 6309 | || finfo->info->emitrelocations | ||||
| 6310 | || bed->elf_backend_emit_relocs); | ||||
| 6311 | |||||
| 6312 | symtab_hdr = &elf_tdata (input_bfd)((input_bfd) -> tdata.elf_obj_data)->symtab_hdr; | ||||
| 6313 | if (elf_bad_symtab (input_bfd)(((input_bfd) -> tdata.elf_obj_data) -> bad_symtab)) | ||||
| 6314 | { | ||||
| 6315 | locsymcount = symtab_hdr->sh_size / bed->s->sizeof_sym; | ||||
| 6316 | extsymoff = 0; | ||||
| 6317 | } | ||||
| 6318 | else | ||||
| 6319 | { | ||||
| 6320 | locsymcount = symtab_hdr->sh_info; | ||||
| 6321 | extsymoff = symtab_hdr->sh_info; | ||||
| 6322 | } | ||||
| 6323 | |||||
| 6324 | /* Read the local symbols. */ | ||||
| 6325 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | ||||
| 6326 | if (isymbuf == NULL((void*)0) && locsymcount != 0) | ||||
| 6327 | { | ||||
| 6328 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, locsymcount, 0, | ||||
| 6329 | finfo->internal_syms, | ||||
| 6330 | finfo->external_syms, | ||||
| 6331 | finfo->locsym_shndx); | ||||
| 6332 | if (isymbuf == NULL((void*)0)) | ||||
| 6333 | return FALSE0; | ||||
| 6334 | } | ||||
| 6335 | |||||
| 6336 | /* Find local symbol sections and adjust values of symbols in | ||||
| 6337 | SEC_MERGE sections. Write out those local symbols we know are | ||||
| 6338 | going into the output file. */ | ||||
| 6339 | isymend = isymbuf + locsymcount; | ||||
| 6340 | for (isym = isymbuf, pindex = finfo->indices, ppsection = finfo->sections; | ||||
| 6341 | isym < isymend; | ||||
| 6342 | isym++, pindex++, ppsection++) | ||||
| 6343 | { | ||||
| 6344 | asection *isec; | ||||
| 6345 | const char *name; | ||||
| 6346 | Elf_Internal_Sym osym; | ||||
| 6347 | |||||
| 6348 | *pindex = -1; | ||||
| 6349 | |||||
| 6350 | if (elf_bad_symtab (input_bfd)(((input_bfd) -> tdata.elf_obj_data) -> bad_symtab)) | ||||
| 6351 | { | ||||
| 6352 | if (ELF_ST_BIND (isym->st_info)(((unsigned int)(isym->st_info)) >> 4) != STB_LOCAL0) | ||||
| 6353 | { | ||||
| 6354 | *ppsection = NULL((void*)0); | ||||
| 6355 | continue; | ||||
| 6356 | } | ||||
| 6357 | } | ||||
| 6358 | |||||
| 6359 | if (isym->st_shndx == SHN_UNDEF0) | ||||
| 6360 | isec = bfd_und_section_ptr((asection *) &bfd_und_section); | ||||
| 6361 | else if (isym->st_shndx < SHN_LORESERVE0xFF00 | ||||
| 6362 | || isym->st_shndx > SHN_HIRESERVE0xFFFF) | ||||
| 6363 | { | ||||
| 6364 | isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx); | ||||
| 6365 | if (isec | ||||
| 6366 | && isec->sec_info_type == ELF_INFO_TYPE_MERGE2 | ||||
| 6367 | && ELF_ST_TYPE (isym->st_info)((isym->st_info) & 0xF) != STT_SECTION3) | ||||
| 6368 | isym->st_value = | ||||
| 6369 | _bfd_merged_section_offset (output_bfd, &isec, | ||||
| 6370 | elf_section_data (isec)((struct bfd_elf_section_data*)isec->used_by_bfd)->sec_info, | ||||
| 6371 | isym->st_value, 0); | ||||
| 6372 | } | ||||
| 6373 | else if (isym->st_shndx == SHN_ABS0xFFF1) | ||||
| 6374 | isec = bfd_abs_section_ptr((asection *) &bfd_abs_section); | ||||
| 6375 | else if (isym->st_shndx == SHN_COMMON0xFFF2) | ||||
| 6376 | isec = bfd_com_section_ptr((asection *) &bfd_com_section); | ||||
| 6377 | else | ||||
| 6378 | { | ||||
| 6379 | /* Who knows? */ | ||||
| 6380 | isec = NULL((void*)0); | ||||
| 6381 | } | ||||
| 6382 | |||||
| 6383 | *ppsection = isec; | ||||
| 6384 | |||||
| 6385 | /* Don't output the first, undefined, symbol. */ | ||||
| 6386 | if (ppsection
| ||||
| 6387 | continue; | ||||
| 6388 | |||||
| 6389 | if (ELF_ST_TYPE (isym->st_info)((isym->st_info) & 0xF) == STT_SECTION3) | ||||
| 6390 | { | ||||
| 6391 | /* We never output section symbols. Instead, we use the | ||||
| 6392 | section symbol of the corresponding section in the output | ||||
| 6393 | file. */ | ||||
| 6394 | continue; | ||||
| 6395 | } | ||||
| 6396 | |||||
| 6397 | /* If we are stripping all symbols, we don't want to output this | ||||
| 6398 | one. */ | ||||
| 6399 | if (finfo->info->strip == strip_all) | ||||
| 6400 | continue; | ||||
| 6401 | |||||
| 6402 | /* If we are discarding all local symbols, we don't want to | ||||
| 6403 | output this one. If we are generating a relocatable output | ||||
| 6404 | file, then some of the local symbols may be required by | ||||
| 6405 | relocs; we output them below as we discover that they are | ||||
| 6406 | needed. */ | ||||
| 6407 | if (finfo->info->discard == discard_all) | ||||
| 6408 | continue; | ||||
| 6409 | |||||
| 6410 | /* If this symbol is defined in a section which we are | ||||
| 6411 | discarding, we don't need to keep it, but note that | ||||
| 6412 | linker_mark is only reliable for sections that have contents. | ||||
| 6413 | For the benefit of the MIPS ELF linker, we check SEC_EXCLUDE | ||||
| 6414 | as well as linker_mark. */ | ||||
| 6415 | if ((isym->st_shndx
| ||||
| 6416 | && isec
| ||||
| 6417 | && ((! isec->linker_mark && (isec->flags & SEC_HAS_CONTENTS0x200) != 0) | ||||
| 6418 | || (! finfo->info->relocatable | ||||
| 6419 | && (isec->flags & SEC_EXCLUDE0x40000) != 0))) | ||||
| 6420 | continue; | ||||
| 6421 | |||||
| 6422 | /* Get the name of the symbol. */ | ||||
| 6423 | name = bfd_elf_string_from_elf_section (input_bfd, symtab_hdr->sh_link, | ||||
| 6424 | isym->st_name); | ||||
| 6425 | if (name == NULL((void*)0)) | ||||
| 6426 | return FALSE0; | ||||
| 6427 | |||||
| 6428 | /* See if we are discarding symbols with this name. */ | ||||
| 6429 | if ((finfo->info->strip == strip_some | ||||
| 6430 | && (bfd_hash_lookup (finfo->info->keep_hash, name, FALSE0, FALSE0) | ||||
| 6431 | == NULL((void*)0))) | ||||
| 6432 | || (((finfo->info->discard == discard_sec_merge | ||||
| 6433 | && (isec->flags & SEC_MERGE0x20000000) && ! finfo->info->relocatable) | ||||
| 6434 | || finfo->info->discard == discard_l) | ||||
| 6435 | && bfd_is_local_label_name (input_bfd, name)((*((input_bfd)->xvec->_bfd_is_local_label_name)) (input_bfd , name)))) | ||||
| 6436 | continue; | ||||
| 6437 | |||||
| 6438 | /* If we get here, we are going to output this symbol. */ | ||||
| 6439 | |||||
| 6440 | osym = *isym; | ||||
| 6441 | |||||
| 6442 | /* Adjust the section index for the output file. */ | ||||
| 6443 | osym.st_shndx = _bfd_elf_section_from_bfd_section (output_bfd, | ||||
| 6444 | isec->output_section); | ||||
| |||||
| 6445 | if (osym.st_shndx == SHN_BAD((unsigned) -1)) | ||||
| 6446 | return FALSE0; | ||||
| 6447 | |||||
| 6448 | *pindex = bfd_get_symcount (output_bfd)((output_bfd)->symcount); | ||||
| 6449 | |||||
| 6450 | /* ELF symbols in relocatable files are section relative, but | ||||
| 6451 | in executable files they are virtual addresses. Note that | ||||
| 6452 | this code assumes that all ELF sections have an associated | ||||
| 6453 | BFD section with a reasonable value for output_offset; below | ||||
| 6454 | we assume that they also have a reasonable value for | ||||
| 6455 | output_section. Any special sections must be set up to meet | ||||
| 6456 | these requirements. */ | ||||
| 6457 | osym.st_value += isec->output_offset; | ||||
| 6458 | if (! finfo->info->relocatable) | ||||
| 6459 | { | ||||
| 6460 | osym.st_value += isec->output_section->vma; | ||||
| 6461 | if (ELF_ST_TYPE (osym.st_info)((osym.st_info) & 0xF) == STT_TLS6) | ||||
| 6462 | { | ||||
| 6463 | /* STT_TLS symbols are relative to PT_TLS segment base. */ | ||||
| 6464 | BFD_ASSERT (elf_hash_table (finfo->info)->tls_sec != NULL){ if (!(((struct elf_link_hash_table *) ((finfo->info)-> hash))->tls_sec != ((void*)0))) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,6464); }; | ||||
| 6465 | osym.st_value -= elf_hash_table (finfo->info)((struct elf_link_hash_table *) ((finfo->info)->hash))->tls_sec->vma; | ||||
| 6466 | } | ||||
| 6467 | } | ||||
| 6468 | |||||
| 6469 | if (! elf_link_output_sym (finfo, name, &osym, isec, NULL((void*)0))) | ||||
| 6470 | return FALSE0; | ||||
| 6471 | } | ||||
| 6472 | |||||
| 6473 | /* Relocate the contents of each section. */ | ||||
| 6474 | sym_hashes = elf_sym_hashes (input_bfd)(((input_bfd) -> tdata.elf_obj_data) -> sym_hashes); | ||||
| 6475 | for (o = input_bfd->sections; o != NULL((void*)0); o = o->next) | ||||
| 6476 | { | ||||
| 6477 | bfd_byte *contents; | ||||
| 6478 | |||||
| 6479 | if (! o->linker_mark) | ||||
| 6480 | { | ||||
| 6481 | /* This section was omitted from the link. */ | ||||
| 6482 | continue; | ||||
| 6483 | } | ||||
| 6484 | |||||
| 6485 | if ((o->flags & SEC_HAS_CONTENTS0x200) == 0 | ||||
| 6486 | || (o->_raw_size == 0 && (o->flags & SEC_RELOC0x004) == 0)) | ||||
| 6487 | continue; | ||||
| 6488 | |||||
| 6489 | if ((o->flags & SEC_LINKER_CREATED0x800000) != 0) | ||||
| 6490 | { | ||||
| 6491 | /* Section was created by _bfd_elf_link_create_dynamic_sections | ||||
| 6492 | or somesuch. */ | ||||
| 6493 | continue; | ||||
| 6494 | } | ||||
| 6495 | |||||
| 6496 | /* Get the contents of the section. They have been cached by a | ||||
| 6497 | relaxation routine. Note that o is a section in an input | ||||
| 6498 | file, so the contents field will not have been set by any of | ||||
| 6499 | the routines which work on output files. */ | ||||
| 6500 | if (elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->this_hdr.contents != NULL((void*)0)) | ||||
| 6501 | contents = elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->this_hdr.contents; | ||||
| 6502 | else | ||||
| 6503 | { | ||||
| 6504 | contents = finfo->contents; | ||||
| 6505 | if (! bfd_get_section_contents (input_bfd, o, contents, 0, | ||||
| 6506 | o->_raw_size)) | ||||
| 6507 | return FALSE0; | ||||
| 6508 | } | ||||
| 6509 | |||||
| 6510 | if ((o->flags & SEC_RELOC0x004) != 0) | ||||
| 6511 | { | ||||
| 6512 | Elf_Internal_Rela *internal_relocs; | ||||
| 6513 | bfd_vma r_type_mask; | ||||
| 6514 | int r_sym_shift; | ||||
| 6515 | |||||
| 6516 | /* Get the swapped relocs. */ | ||||
| 6517 | internal_relocs | ||||
| 6518 | = _bfd_elf_link_read_relocs (input_bfd, o, finfo->external_relocs, | ||||
| 6519 | finfo->internal_relocs, FALSE0); | ||||
| 6520 | if (internal_relocs == NULL((void*)0) | ||||
| 6521 | && o->reloc_count > 0) | ||||
| 6522 | return FALSE0; | ||||
| 6523 | |||||
| 6524 | if (bed->s->arch_size == 32) | ||||
| 6525 | { | ||||
| 6526 | r_type_mask = 0xff; | ||||
| 6527 | r_sym_shift = 8; | ||||
| 6528 | } | ||||
| 6529 | else | ||||
| 6530 | { | ||||
| 6531 | r_type_mask = 0xffffffff; | ||||
| 6532 | r_sym_shift = 32; | ||||
| 6533 | } | ||||
| 6534 | |||||
| 6535 | /* Run through the relocs looking for any against symbols | ||||
| 6536 | from discarded sections and section symbols from | ||||
| 6537 | removed link-once sections. Complain about relocs | ||||
| 6538 | against discarded sections. Zero relocs against removed | ||||
| 6539 | link-once sections. Preserve debug information as much | ||||
| 6540 | as we can. */ | ||||
| 6541 | if (!elf_section_ignore_discarded_relocs (o)) | ||||
| 6542 | { | ||||
| 6543 | Elf_Internal_Rela *rel, *relend; | ||||
| 6544 | |||||
| 6545 | rel = internal_relocs; | ||||
| 6546 | relend = rel + o->reloc_count * bed->s->int_rels_per_ext_rel; | ||||
| 6547 | for ( ; rel < relend; rel++) | ||||
| 6548 | { | ||||
| 6549 | unsigned long r_symndx = rel->r_info >> r_sym_shift; | ||||
| 6550 | asection *sec; | ||||
| 6551 | |||||
| 6552 | if (r_symndx >= locsymcount | ||||
| 6553 | || (elf_bad_symtab (input_bfd)(((input_bfd) -> tdata.elf_obj_data) -> bad_symtab) | ||||
| 6554 | && finfo->sections[r_symndx] == NULL((void*)0))) | ||||
| 6555 | { | ||||
| 6556 | struct elf_link_hash_entry *h; | ||||
| 6557 | |||||
| 6558 | h = sym_hashes[r_symndx - extsymoff]; | ||||
| 6559 | while (h->root.type == bfd_link_hash_indirect | ||||
| 6560 | || h->root.type == bfd_link_hash_warning) | ||||
| 6561 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | ||||
| 6562 | |||||
| 6563 | /* Complain if the definition comes from a | ||||
| 6564 | discarded section. */ | ||||
| 6565 | sec = h->root.u.def.section; | ||||
| 6566 | if ((h->root.type == bfd_link_hash_defined | ||||
| 6567 | || h->root.type == bfd_link_hash_defweak) | ||||
| 6568 | && elf_discarded_section (sec)(!((sec) == ((asection *) &bfd_abs_section)) && ( ((sec)->output_section) == ((asection *) &bfd_abs_section )) && sec->sec_info_type != 2 && sec->sec_info_type != 4)) | ||||
| 6569 | { | ||||
| 6570 | if ((o->flags & SEC_DEBUGGING0x10000) != 0) | ||||
| 6571 | { | ||||
| 6572 | BFD_ASSERT (r_symndx != 0){ if (!(r_symndx != 0)) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,6572); }; | ||||
| 6573 | /* Try to preserve debug information. */ | ||||
| 6574 | if ((o->flags & SEC_DEBUGGING0x10000) != 0 | ||||
| 6575 | && sec->kept_section != NULL((void*)0) | ||||
| 6576 | && sec->_raw_size == sec->kept_section->_raw_size) | ||||
| 6577 | h->root.u.def.section | ||||
| 6578 | = sec->kept_section; | ||||
| 6579 | else | ||||
| 6580 | memset (rel, 0, sizeof (*rel)); | ||||
| 6581 | } | ||||
| 6582 | else | ||||
| 6583 | finfo->info->callbacks->error_handler | ||||
| 6584 | (LD_DEFINITION_IN_DISCARDED_SECTION1, | ||||
| 6585 | _("%T: discarded in section `%s' from %s\n")("%T: discarded in section `%s' from %s\n"), | ||||
| 6586 | h->root.root.string, | ||||
| 6587 | h->root.root.string, | ||||
| 6588 | h->root.u.def.section->name, | ||||
| 6589 | bfd_archive_filename (h->root.u.def.section->owner)); | ||||
| 6590 | } | ||||
| 6591 | } | ||||
| 6592 | else | ||||
| 6593 | { | ||||
| 6594 | sec = finfo->sections[r_symndx]; | ||||
| 6595 | |||||
| 6596 | if (sec != NULL((void*)0) && elf_discarded_section (sec)(!((sec) == ((asection *) &bfd_abs_section)) && ( ((sec)->output_section) == ((asection *) &bfd_abs_section )) && sec->sec_info_type != 2 && sec->sec_info_type != 4)) | ||||
| 6597 | { | ||||
| 6598 | if ((o->flags & SEC_DEBUGGING0x10000) != 0 | ||||
| 6599 | || (sec->flags & SEC_LINK_ONCE0x100000) != 0) | ||||
| 6600 | { | ||||
| 6601 | BFD_ASSERT (r_symndx != 0){ if (!(r_symndx != 0)) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,6601); }; | ||||
| 6602 | /* Try to preserve debug information. */ | ||||
| 6603 | if ((o->flags & SEC_DEBUGGING0x10000) != 0 | ||||
| 6604 | && sec->kept_section != NULL((void*)0) | ||||
| 6605 | && sec->_raw_size == sec->kept_section->_raw_size) | ||||
| 6606 | finfo->sections[r_symndx] | ||||
| 6607 | = sec->kept_section; | ||||
| 6608 | else | ||||
| 6609 | { | ||||
| 6610 | rel->r_info &= r_type_mask; | ||||
| 6611 | rel->r_addend = 0; | ||||
| 6612 | } | ||||
| 6613 | } | ||||
| 6614 | else | ||||
| 6615 | { | ||||
| 6616 | static int count; | ||||
| 6617 | int ok; | ||||
| 6618 | char *buf; | ||||
| 6619 | |||||
| 6620 | ok = asprintf (&buf, "local symbol %d", | ||||
| 6621 | count++); | ||||
| 6622 | if (ok <= 0) | ||||
| 6623 | buf = (char *) "local symbol"; | ||||
| 6624 | finfo->info->callbacks->error_handler | ||||
| 6625 | (LD_DEFINITION_IN_DISCARDED_SECTION1, | ||||
| 6626 | _("%T: discarded in section `%s' from %s\n")("%T: discarded in section `%s' from %s\n"), | ||||
| 6627 | buf, buf, sec->name, | ||||
| 6628 | bfd_archive_filename (input_bfd)); | ||||
| 6629 | if (ok != -1) | ||||
| 6630 | free (buf); | ||||
| 6631 | } | ||||
| 6632 | } | ||||
| 6633 | } | ||||
| 6634 | } | ||||
| 6635 | } | ||||
| 6636 | |||||
| 6637 | /* Relocate the section by invoking a back end routine. | ||||
| 6638 | |||||
| 6639 | The back end routine is responsible for adjusting the | ||||
| 6640 | section contents as necessary, and (if using Rela relocs | ||||
| 6641 | and generating a relocatable output file) adjusting the | ||||
| 6642 | reloc addend as necessary. | ||||
| 6643 | |||||
| 6644 | The back end routine does not have to worry about setting | ||||
| 6645 | the reloc address or the reloc symbol index. | ||||
| 6646 | |||||
| 6647 | The back end routine is given a pointer to the swapped in | ||||
| 6648 | internal symbols, and can access the hash table entries | ||||
| 6649 | for the external symbols via elf_sym_hashes (input_bfd). | ||||
| 6650 | |||||
| 6651 | When generating relocatable output, the back end routine | ||||
| 6652 | must handle STB_LOCAL/STT_SECTION symbols specially. The | ||||
| 6653 | output symbol is going to be a section symbol | ||||
| 6654 | corresponding to the output section, which will require | ||||
| 6655 | the addend to be adjusted. */ | ||||
| 6656 | |||||
| 6657 | if (! (*relocate_section) (output_bfd, finfo->info, | ||||
| 6658 | input_bfd, o, contents, | ||||
| 6659 | internal_relocs, | ||||
| 6660 | isymbuf, | ||||
| 6661 | finfo->sections)) | ||||
| 6662 | return FALSE0; | ||||
| 6663 | |||||
| 6664 | if (emit_relocs) | ||||
| 6665 | { | ||||
| 6666 | Elf_Internal_Rela *irela; | ||||
| 6667 | Elf_Internal_Rela *irelaend; | ||||
| 6668 | bfd_vma last_offset; | ||||
| 6669 | struct elf_link_hash_entry **rel_hash; | ||||
| 6670 | Elf_Internal_Shdr *input_rel_hdr, *input_rel_hdr2; | ||||
| 6671 | unsigned int next_erel; | ||||
| 6672 | bfd_boolean (*reloc_emitter) | ||||
| 6673 | (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *); | ||||
| 6674 | bfd_boolean rela_normal; | ||||
| 6675 | |||||
| 6676 | input_rel_hdr = &elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hdr; | ||||
| 6677 | rela_normal = (bed->rela_normal | ||||
| 6678 | && (input_rel_hdr->sh_entsize | ||||
| 6679 | == bed->s->sizeof_rela)); | ||||
| 6680 | |||||
| 6681 | /* Adjust the reloc addresses and symbol indices. */ | ||||
| 6682 | |||||
| 6683 | irela = internal_relocs; | ||||
| 6684 | irelaend = irela + o->reloc_count * bed->s->int_rels_per_ext_rel; | ||||
| 6685 | rel_hash = (elf_section_data (o->output_section)((struct bfd_elf_section_data*)o->output_section->used_by_bfd )->rel_hashes | ||||
| 6686 | + elf_section_data (o->output_section)((struct bfd_elf_section_data*)o->output_section->used_by_bfd )->rel_count | ||||
| 6687 | + elf_section_data (o->output_section)((struct bfd_elf_section_data*)o->output_section->used_by_bfd )->rel_count2); | ||||
| 6688 | last_offset = o->output_offset; | ||||
| 6689 | if (!finfo->info->relocatable) | ||||
| 6690 | last_offset += o->output_section->vma; | ||||
| 6691 | for (next_erel = 0; irela < irelaend; irela++, next_erel++) | ||||
| 6692 | { | ||||
| 6693 | unsigned long r_symndx; | ||||
| 6694 | asection *sec; | ||||
| 6695 | Elf_Internal_Sym sym; | ||||
| 6696 | |||||
| 6697 | if (next_erel == bed->s->int_rels_per_ext_rel) | ||||
| 6698 | { | ||||
| 6699 | rel_hash++; | ||||
| 6700 | next_erel = 0; | ||||
| 6701 | } | ||||
| 6702 | |||||
| 6703 | irela->r_offset = _bfd_elf_section_offset (output_bfd, | ||||
| 6704 | finfo->info, o, | ||||
| 6705 | irela->r_offset); | ||||
| 6706 | if (irela->r_offset >= (bfd_vma) -2) | ||||
| 6707 | { | ||||
| 6708 | /* This is a reloc for a deleted entry or somesuch. | ||||
| 6709 | Turn it into an R_*_NONE reloc, at the same | ||||
| 6710 | offset as the last reloc. elf_eh_frame.c and | ||||
| 6711 | elf_bfd_discard_info rely on reloc offsets | ||||
| 6712 | being ordered. */ | ||||
| 6713 | irela->r_offset = last_offset; | ||||
| 6714 | irela->r_info = 0; | ||||
| 6715 | irela->r_addend = 0; | ||||
| 6716 | continue; | ||||
| 6717 | } | ||||
| 6718 | |||||
| 6719 | irela->r_offset += o->output_offset; | ||||
| 6720 | |||||
| 6721 | /* Relocs in an executable have to be virtual addresses. */ | ||||
| 6722 | if (!finfo->info->relocatable) | ||||
| 6723 | irela->r_offset += o->output_section->vma; | ||||
| 6724 | |||||
| 6725 | last_offset = irela->r_offset; | ||||
| 6726 | |||||
| 6727 | r_symndx = irela->r_info >> r_sym_shift; | ||||
| 6728 | if (r_symndx == STN_UNDEF0) | ||||
| 6729 | continue; | ||||
| 6730 | |||||
| 6731 | if (r_symndx >= locsymcount | ||||
| 6732 | || (elf_bad_symtab (input_bfd)(((input_bfd) -> tdata.elf_obj_data) -> bad_symtab) | ||||
| 6733 | && finfo->sections[r_symndx] == NULL((void*)0))) | ||||
| 6734 | { | ||||
| 6735 | struct elf_link_hash_entry *rh; | ||||
| 6736 | unsigned long indx; | ||||
| 6737 | |||||
| 6738 | /* This is a reloc against a global symbol. We | ||||
| 6739 | have not yet output all the local symbols, so | ||||
| 6740 | we do not know the symbol index of any global | ||||
| 6741 | symbol. We set the rel_hash entry for this | ||||
| 6742 | reloc to point to the global hash table entry | ||||
| 6743 | for this symbol. The symbol index is then | ||||
| 6744 | set at the end of elf_bfd_final_link. */ | ||||
| 6745 | indx = r_symndx - extsymoff; | ||||
| 6746 | rh = elf_sym_hashes (input_bfd)(((input_bfd) -> tdata.elf_obj_data) -> sym_hashes)[indx]; | ||||
| 6747 | while (rh->root.type == bfd_link_hash_indirect | ||||
| 6748 | || rh->root.type == bfd_link_hash_warning) | ||||
| 6749 | rh = (struct elf_link_hash_entry *) rh->root.u.i.link; | ||||
| 6750 | |||||
| 6751 | /* Setting the index to -2 tells | ||||
| 6752 | elf_link_output_extsym that this symbol is | ||||
| 6753 | used by a reloc. */ | ||||
| 6754 | BFD_ASSERT (rh->indx < 0){ if (!(rh->indx < 0)) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,6754); }; | ||||
| 6755 | rh->indx = -2; | ||||
| 6756 | |||||
| 6757 | *rel_hash = rh; | ||||
| 6758 | |||||
| 6759 | continue; | ||||
| 6760 | } | ||||
| 6761 | |||||
| 6762 | /* This is a reloc against a local symbol. */ | ||||
| 6763 | |||||
| 6764 | *rel_hash = NULL((void*)0); | ||||
| 6765 | sym = isymbuf[r_symndx]; | ||||
| 6766 | sec = finfo->sections[r_symndx]; | ||||
| 6767 | if (ELF_ST_TYPE (sym.st_info)((sym.st_info) & 0xF) == STT_SECTION3) | ||||
| 6768 | { | ||||
| 6769 | /* I suppose the backend ought to fill in the | ||||
| 6770 | section of any STT_SECTION symbol against a | ||||
| 6771 | processor specific section. If we have | ||||
| 6772 | discarded a section, the output_section will | ||||
| 6773 | be the absolute section. */ | ||||
| 6774 | if (bfd_is_abs_section (sec)((sec) == ((asection *) &bfd_abs_section)) | ||||
| 6775 | || (sec != NULL((void*)0) | ||||
| 6776 | && bfd_is_abs_section (sec->output_section)((sec->output_section) == ((asection *) &bfd_abs_section )))) | ||||
| 6777 | r_symndx = 0; | ||||
| 6778 | else if (sec == NULL((void*)0) || sec->owner == NULL((void*)0)) | ||||
| 6779 | { | ||||
| 6780 | bfd_set_error (bfd_error_bad_value); | ||||
| 6781 | return FALSE0; | ||||
| 6782 | } | ||||
| 6783 | else | ||||
| 6784 | { | ||||
| 6785 | r_symndx = sec->output_section->target_index; | ||||
| 6786 | BFD_ASSERT (r_symndx != 0){ if (!(r_symndx != 0)) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,6786); }; | ||||
| 6787 | } | ||||
| 6788 | |||||
| 6789 | /* Adjust the addend according to where the | ||||
| 6790 | section winds up in the output section. */ | ||||
| 6791 | if (rela_normal) | ||||
| 6792 | irela->r_addend += sec->output_offset; | ||||
| 6793 | } | ||||
| 6794 | else | ||||
| 6795 | { | ||||
| 6796 | if (finfo->indices[r_symndx] == -1) | ||||
| 6797 | { | ||||
| 6798 | unsigned long shlink; | ||||
| 6799 | const char *name; | ||||
| 6800 | asection *osec; | ||||
| 6801 | |||||
| 6802 | if (finfo->info->strip == strip_all) | ||||
| 6803 | { | ||||
| 6804 | /* You can't do ld -r -s. */ | ||||
| 6805 | bfd_set_error (bfd_error_invalid_operation); | ||||
| 6806 | return FALSE0; | ||||
| 6807 | } | ||||
| 6808 | |||||
| 6809 | /* This symbol was skipped earlier, but | ||||
| 6810 | since it is needed by a reloc, we | ||||
| 6811 | must output it now. */ | ||||
| 6812 | shlink = symtab_hdr->sh_link; | ||||
| 6813 | name = (bfd_elf_string_from_elf_section | ||||
| 6814 | (input_bfd, shlink, sym.st_name)); | ||||
| 6815 | if (name == NULL((void*)0)) | ||||
| 6816 | return FALSE0; | ||||
| 6817 | |||||
| 6818 | osec = sec->output_section; | ||||
| 6819 | sym.st_shndx = | ||||
| 6820 | _bfd_elf_section_from_bfd_section (output_bfd, | ||||
| 6821 | osec); | ||||
| 6822 | if (sym.st_shndx == SHN_BAD((unsigned) -1)) | ||||
| 6823 | return FALSE0; | ||||
| 6824 | |||||
| 6825 | sym.st_value += sec->output_offset; | ||||
| 6826 | if (! finfo->info->relocatable) | ||||
| 6827 | { | ||||
| 6828 | sym.st_value += osec->vma; | ||||
| 6829 | if (ELF_ST_TYPE (sym.st_info)((sym.st_info) & 0xF) == STT_TLS6) | ||||
| 6830 | { | ||||
| 6831 | /* STT_TLS symbols are relative to PT_TLS | ||||
| 6832 | segment base. */ | ||||
| 6833 | BFD_ASSERT (elf_hash_table (finfo->info){ if (!(((struct elf_link_hash_table *) ((finfo->info)-> hash)) ->tls_sec != ((void*)0))) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,6834); } | ||||
| 6834 | ->tls_sec != NULL){ if (!(((struct elf_link_hash_table *) ((finfo->info)-> hash)) ->tls_sec != ((void*)0))) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,6834); }; | ||||
| 6835 | sym.st_value -= (elf_hash_table (finfo->info)((struct elf_link_hash_table *) ((finfo->info)->hash)) | ||||
| 6836 | ->tls_sec->vma); | ||||
| 6837 | } | ||||
| 6838 | } | ||||
| 6839 | |||||
| 6840 | finfo->indices[r_symndx] | ||||
| 6841 | = bfd_get_symcount (output_bfd)((output_bfd)->symcount); | ||||
| 6842 | |||||
| 6843 | if (! elf_link_output_sym (finfo, name, &sym, sec, | ||||
| 6844 | NULL((void*)0))) | ||||
| 6845 | return FALSE0; | ||||
| 6846 | } | ||||
| 6847 | |||||
| 6848 | r_symndx = finfo->indices[r_symndx]; | ||||
| 6849 | } | ||||
| 6850 | |||||
| 6851 | irela->r_info = ((bfd_vma) r_symndx << r_sym_shift | ||||
| 6852 | | (irela->r_info & r_type_mask)); | ||||
| 6853 | } | ||||
| 6854 | |||||
| 6855 | /* Swap out the relocs. */ | ||||
| 6856 | if (bed->elf_backend_emit_relocs | ||||
| 6857 | && !(finfo->info->relocatable | ||||
| 6858 | || finfo->info->emitrelocations)) | ||||
| 6859 | reloc_emitter = bed->elf_backend_emit_relocs; | ||||
| 6860 | else | ||||
| 6861 | reloc_emitter = _bfd_elf_link_output_relocs; | ||||
| 6862 | |||||
| 6863 | if (input_rel_hdr->sh_size != 0 | ||||
| 6864 | && ! (*reloc_emitter) (output_bfd, o, input_rel_hdr, | ||||
| 6865 | internal_relocs)) | ||||
| 6866 | return FALSE0; | ||||
| 6867 | |||||
| 6868 | input_rel_hdr2 = elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hdr2; | ||||
| 6869 | if (input_rel_hdr2 && input_rel_hdr2->sh_size != 0) | ||||
| 6870 | { | ||||
| 6871 | internal_relocs += (NUM_SHDR_ENTRIES (input_rel_hdr)((input_rel_hdr)->sh_size / (input_rel_hdr)->sh_entsize ) | ||||
| 6872 | * bed->s->int_rels_per_ext_rel); | ||||
| 6873 | if (! (*reloc_emitter) (output_bfd, o, input_rel_hdr2, | ||||
| 6874 | internal_relocs)) | ||||
| 6875 | return FALSE0; | ||||
| 6876 | } | ||||
| 6877 | } | ||||
| 6878 | } | ||||
| 6879 | |||||
| 6880 | /* Write out the modified section contents. */ | ||||
| 6881 | if (bed->elf_backend_write_section | ||||
| 6882 | && (*bed->elf_backend_write_section) (output_bfd, o, contents)) | ||||
| 6883 | { | ||||
| 6884 | /* Section written out. */ | ||||
| 6885 | } | ||||
| 6886 | else switch (o->sec_info_type) | ||||
| 6887 | { | ||||
| 6888 | case ELF_INFO_TYPE_STABS1: | ||||
| 6889 | if (! (_bfd_write_section_stabs | ||||
| 6890 | (output_bfd, | ||||
| 6891 | &elf_hash_table (finfo->info)((struct elf_link_hash_table *) ((finfo->info)->hash))->stab_info, | ||||
| 6892 | o, &elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->sec_info, contents))) | ||||
| 6893 | return FALSE0; | ||||
| 6894 | break; | ||||
| 6895 | case ELF_INFO_TYPE_MERGE2: | ||||
| 6896 | if (! _bfd_write_merged_section (output_bfd, o, | ||||
| 6897 | elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->sec_info)) | ||||
| 6898 | return FALSE0; | ||||
| 6899 | break; | ||||
| 6900 | case ELF_INFO_TYPE_EH_FRAME3: | ||||
| 6901 | { | ||||
| 6902 | if (! _bfd_elf_write_section_eh_frame (output_bfd, finfo->info, | ||||
| 6903 | o, contents)) | ||||
| 6904 | return FALSE0; | ||||
| 6905 | } | ||||
| 6906 | break; | ||||
| 6907 | default: | ||||
| 6908 | { | ||||
| 6909 | bfd_size_type sec_size; | ||||
| 6910 | |||||
| 6911 | sec_size = (o->_cooked_size != 0 ? o->_cooked_size : o->_raw_size); | ||||
| 6912 | if (! (o->flags & SEC_EXCLUDE0x40000) | ||||
| 6913 | && ! bfd_set_section_contents (output_bfd, o->output_section, | ||||
| 6914 | contents, | ||||
| 6915 | (file_ptr) o->output_offset, | ||||
| 6916 | sec_size)) | ||||
| 6917 | return FALSE0; | ||||
| 6918 | } | ||||
| 6919 | break; | ||||
| 6920 | } | ||||
| 6921 | } | ||||
| 6922 | |||||
| 6923 | return TRUE1; | ||||
| 6924 | } | ||||
| 6925 | |||||
| 6926 | /* Generate a reloc when linking an ELF file. This is a reloc | ||||
| 6927 | requested by the linker, and does come from any input file. This | ||||
| 6928 | is used to build constructor and destructor tables when linking | ||||
| 6929 | with -Ur. */ | ||||
| 6930 | |||||
| 6931 | static bfd_boolean | ||||
| 6932 | elf_reloc_link_order (bfd *output_bfd, | ||||
| 6933 | struct bfd_link_info *info, | ||||
| 6934 | asection *output_section, | ||||
| 6935 | struct bfd_link_order *link_order) | ||||
| 6936 | { | ||||
| 6937 | reloc_howto_type *howto; | ||||
| 6938 | long indx; | ||||
| 6939 | bfd_vma offset; | ||||
| 6940 | bfd_vma addend; | ||||
| 6941 | struct elf_link_hash_entry **rel_hash_ptr; | ||||
| 6942 | Elf_Internal_Shdr *rel_hdr; | ||||
| 6943 | const struct elf_backend_data *bed = get_elf_backend_data (output_bfd)((const struct elf_backend_data *) (output_bfd)->xvec-> backend_data); | ||||
| 6944 | Elf_Internal_Rela irel[MAX_INT_RELS_PER_EXT_REL3]; | ||||
| 6945 | bfd_byte *erel; | ||||
| 6946 | unsigned int i; | ||||
| 6947 | |||||
| 6948 | howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc); | ||||
| 6949 | if (howto == NULL((void*)0)) | ||||
| 6950 | { | ||||
| 6951 | bfd_set_error (bfd_error_bad_value); | ||||
| 6952 | return FALSE0; | ||||
| 6953 | } | ||||
| 6954 | |||||
| 6955 | addend = link_order->u.reloc.p->addend; | ||||
| 6956 | |||||
| 6957 | /* Figure out the symbol index. */ | ||||
| 6958 | rel_hash_ptr = (elf_section_data (output_section)((struct bfd_elf_section_data*)output_section->used_by_bfd )->rel_hashes | ||||
| 6959 | + elf_section_data (output_section)((struct bfd_elf_section_data*)output_section->used_by_bfd )->rel_count | ||||
| 6960 | + elf_section_data (output_section)((struct bfd_elf_section_data*)output_section->used_by_bfd )->rel_count2); | ||||
| 6961 | if (link_order->type == bfd_section_reloc_link_order) | ||||
| 6962 | { | ||||
| 6963 | indx = link_order->u.reloc.p->u.section->target_index; | ||||
| 6964 | BFD_ASSERT (indx != 0){ if (!(indx != 0)) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,6964); }; | ||||
| 6965 | *rel_hash_ptr = NULL((void*)0); | ||||
| 6966 | } | ||||
| 6967 | else | ||||
| 6968 | { | ||||
| 6969 | struct elf_link_hash_entry *h; | ||||
| 6970 | |||||
| 6971 | /* Treat a reloc against a defined symbol as though it were | ||||
| 6972 | actually against the section. */ | ||||
| 6973 | h = ((struct elf_link_hash_entry *) | ||||
| 6974 | bfd_wrapped_link_hash_lookup (output_bfd, info, | ||||
| 6975 | link_order->u.reloc.p->u.name, | ||||
| 6976 | FALSE0, FALSE0, TRUE1)); | ||||
| 6977 | if (h != NULL((void*)0) | ||||
| 6978 | && (h->root.type == bfd_link_hash_defined | ||||
| 6979 | || h->root.type == bfd_link_hash_defweak)) | ||||
| 6980 | { | ||||
| 6981 | asection *section; | ||||
| 6982 | |||||
| 6983 | section = h->root.u.def.section; | ||||
| 6984 | indx = section->output_section->target_index; | ||||
| 6985 | *rel_hash_ptr = NULL((void*)0); | ||||
| 6986 | /* It seems that we ought to add the symbol value to the | ||||
| 6987 | addend here, but in practice it has already been added | ||||
| 6988 | because it was passed to constructor_callback. */ | ||||
| 6989 | addend += section->output_section->vma + section->output_offset; | ||||
| 6990 | } | ||||
| 6991 | else if (h != NULL((void*)0)) | ||||
| 6992 | { | ||||
| 6993 | /* Setting the index to -2 tells elf_link_output_extsym that | ||||
| 6994 | this symbol is used by a reloc. */ | ||||
| 6995 | h->indx = -2; | ||||
| 6996 | *rel_hash_ptr = h; | ||||
| 6997 | indx = 0; | ||||
| 6998 | } | ||||
| 6999 | else | ||||
| 7000 | { | ||||
| 7001 | if (! ((*info->callbacks->unattached_reloc) | ||||
| 7002 | (info, link_order->u.reloc.p->u.name, NULL((void*)0), NULL((void*)0), 0))) | ||||
| 7003 | return FALSE0; | ||||
| 7004 | indx = 0; | ||||
| 7005 | } | ||||
| 7006 | } | ||||
| 7007 | |||||
| 7008 | /* If this is an inplace reloc, we must write the addend into the | ||||
| 7009 | object file. */ | ||||
| 7010 | if (howto->partial_inplace && addend != 0) | ||||
| 7011 | { | ||||
| 7012 | bfd_size_type size; | ||||
| 7013 | bfd_reloc_status_type rstat; | ||||
| 7014 | bfd_byte *buf; | ||||
| 7015 | bfd_boolean ok; | ||||
| 7016 | const char *sym_name; | ||||
| 7017 | |||||
| 7018 | size = bfd_get_reloc_size (howto); | ||||
| 7019 | buf = bfd_zmalloc (size); | ||||
| 7020 | if (buf == NULL((void*)0)) | ||||
| 7021 | return FALSE0; | ||||
| 7022 | rstat = _bfd_relocate_contents (howto, output_bfd, addend, buf); | ||||
| 7023 | switch (rstat) | ||||
| 7024 | { | ||||
| 7025 | case bfd_reloc_ok: | ||||
| 7026 | break; | ||||
| 7027 | |||||
| 7028 | default: | ||||
| 7029 | case bfd_reloc_outofrange: | ||||
| 7030 | abort ()_bfd_abort ("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c", 7030 , __PRETTY_FUNCTION__); | ||||
| 7031 | |||||
| 7032 | case bfd_reloc_overflow: | ||||
| 7033 | if (link_order->type == bfd_section_reloc_link_order) | ||||
| 7034 | sym_name = bfd_section_name (output_bfd,((link_order->u.reloc.p->u.section)->name) | ||||
| 7035 | link_order->u.reloc.p->u.section)((link_order->u.reloc.p->u.section)->name); | ||||
| 7036 | else | ||||
| 7037 | sym_name = link_order->u.reloc.p->u.name; | ||||
| 7038 | if (! ((*info->callbacks->reloc_overflow) | ||||
| 7039 | (info, sym_name, howto->name, addend, NULL((void*)0), NULL((void*)0), 0))) | ||||
| 7040 | { | ||||
| 7041 | free (buf); | ||||
| 7042 | return FALSE0; | ||||
| 7043 | } | ||||
| 7044 | break; | ||||
| 7045 | } | ||||
| 7046 | ok = bfd_set_section_contents (output_bfd, output_section, buf, | ||||
| 7047 | link_order->offset, size); | ||||
| 7048 | free (buf); | ||||
| 7049 | if (! ok) | ||||
| 7050 | return FALSE0; | ||||
| 7051 | } | ||||
| 7052 | |||||
| 7053 | /* The address of a reloc is relative to the section in a | ||||
| 7054 | relocatable file, and is a virtual address in an executable | ||||
| 7055 | file. */ | ||||
| 7056 | offset = link_order->offset; | ||||
| 7057 | if (! info->relocatable) | ||||
| 7058 | offset += output_section->vma; | ||||
| 7059 | |||||
| 7060 | for (i = 0; i < bed->s->int_rels_per_ext_rel; i++) | ||||
| 7061 | { | ||||
| 7062 | irel[i].r_offset = offset; | ||||
| 7063 | irel[i].r_info = 0; | ||||
| 7064 | irel[i].r_addend = 0; | ||||
| 7065 | } | ||||
| 7066 | if (bed->s->arch_size == 32) | ||||
| 7067 | irel[0].r_info = ELF32_R_INFO (indx, howto->type)(((indx) << 8) + ((howto->type) & 0xff)); | ||||
| 7068 | else | ||||
| 7069 | irel[0].r_info = ELF64_R_INFO (indx, howto->type)(((bfd_vma) (indx) << 32) + (bfd_vma) (howto->type)); | ||||
| 7070 | |||||
| 7071 | rel_hdr = &elf_section_data (output_section)((struct bfd_elf_section_data*)output_section->used_by_bfd )->rel_hdr; | ||||
| 7072 | erel = rel_hdr->contents; | ||||
| 7073 | if (rel_hdr->sh_type == SHT_REL9) | ||||
| 7074 | { | ||||
| 7075 | erel += (elf_section_data (output_section)((struct bfd_elf_section_data*)output_section->used_by_bfd )->rel_count | ||||
| 7076 | * bed->s->sizeof_rel); | ||||
| 7077 | (*bed->s->swap_reloc_out) (output_bfd, irel, erel); | ||||
| 7078 | } | ||||
| 7079 | else | ||||
| 7080 | { | ||||
| 7081 | irel[0].r_addend = addend; | ||||
| 7082 | erel += (elf_section_data (output_section)((struct bfd_elf_section_data*)output_section->used_by_bfd )->rel_count | ||||
| 7083 | * bed->s->sizeof_rela); | ||||
| 7084 | (*bed->s->swap_reloca_out) (output_bfd, irel, erel); | ||||
| 7085 | } | ||||
| 7086 | |||||
| 7087 | ++elf_section_data (output_section)((struct bfd_elf_section_data*)output_section->used_by_bfd )->rel_count; | ||||
| 7088 | |||||
| 7089 | return TRUE1; | ||||
| 7090 | } | ||||
| 7091 | |||||
| 7092 | /* Do the final step of an ELF link. */ | ||||
| 7093 | |||||
| 7094 | bfd_boolean | ||||
| 7095 | bfd_elf_final_link (bfd *abfd, struct bfd_link_info *info) | ||||
| 7096 | { | ||||
| 7097 | bfd_boolean dynamic; | ||||
| 7098 | bfd_boolean emit_relocs; | ||||
| 7099 | bfd *dynobj; | ||||
| 7100 | struct elf_final_link_info finfo; | ||||
| 7101 | register asection *o; | ||||
| 7102 | register struct bfd_link_order *p; | ||||
| 7103 | register bfd *sub; | ||||
| 7104 | bfd_size_type max_contents_size; | ||||
| 7105 | bfd_size_type max_external_reloc_size; | ||||
| 7106 | bfd_size_type max_internal_reloc_count; | ||||
| 7107 | bfd_size_type max_sym_count; | ||||
| 7108 | bfd_size_type max_sym_shndx_count; | ||||
| 7109 | file_ptr off; | ||||
| 7110 | Elf_Internal_Sym elfsym; | ||||
| 7111 | unsigned int i; | ||||
| 7112 | Elf_Internal_Shdr *symtab_hdr; | ||||
| 7113 | Elf_Internal_Shdr *symtab_shndx_hdr; | ||||
| 7114 | Elf_Internal_Shdr *symstrtab_hdr; | ||||
| 7115 | const struct elf_backend_data *bed = get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data ); | ||||
| 7116 | struct elf_outext_info eoinfo; | ||||
| 7117 | bfd_boolean merged; | ||||
| 7118 | size_t relativecount = 0; | ||||
| 7119 | asection *reldyn = 0; | ||||
| 7120 | bfd_size_type amt; | ||||
| 7121 | |||||
| 7122 | if (! is_elf_hash_table (info->hash)(((struct bfd_link_hash_table *) (info->hash))->type == bfd_link_elf_hash_table)) | ||||
| 7123 | return FALSE0; | ||||
| 7124 | |||||
| 7125 | if (info->shared) | ||||
| 7126 | abfd->flags |= DYNAMIC0x40; | ||||
| 7127 | |||||
| 7128 | dynamic = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynamic_sections_created; | ||||
| 7129 | dynobj = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynobj; | ||||
| 7130 | |||||
| 7131 | emit_relocs = (info->relocatable | ||||
| 7132 | || info->emitrelocations | ||||
| 7133 | || bed->elf_backend_emit_relocs); | ||||
| 7134 | |||||
| 7135 | finfo.info = info; | ||||
| 7136 | finfo.output_bfd = abfd; | ||||
| 7137 | finfo.symstrtab = _bfd_elf_stringtab_init (); | ||||
| 7138 | if (finfo.symstrtab == NULL((void*)0)) | ||||
| 7139 | return FALSE0; | ||||
| 7140 | |||||
| 7141 | if (! dynamic) | ||||
| 7142 | { | ||||
| 7143 | finfo.dynsym_sec = NULL((void*)0); | ||||
| 7144 | finfo.hash_sec = NULL((void*)0); | ||||
| 7145 | finfo.symver_sec = NULL((void*)0); | ||||
| 7146 | } | ||||
| 7147 | else | ||||
| 7148 | { | ||||
| 7149 | finfo.dynsym_sec = bfd_get_section_by_name (dynobj, ".dynsym"); | ||||
| 7150 | finfo.hash_sec = bfd_get_section_by_name (dynobj, ".hash"); | ||||
| 7151 | BFD_ASSERT (finfo.dynsym_sec != NULL && finfo.hash_sec != NULL){ if (!(finfo.dynsym_sec != ((void*)0) && finfo.hash_sec != ((void*)0))) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,7151); }; | ||||
| 7152 | finfo.symver_sec = bfd_get_section_by_name (dynobj, ".gnu.version"); | ||||
| 7153 | /* Note that it is OK if symver_sec is NULL. */ | ||||
| 7154 | } | ||||
| 7155 | |||||
| 7156 | finfo.contents = NULL((void*)0); | ||||
| 7157 | finfo.external_relocs = NULL((void*)0); | ||||
| 7158 | finfo.internal_relocs = NULL((void*)0); | ||||
| 7159 | finfo.external_syms = NULL((void*)0); | ||||
| 7160 | finfo.locsym_shndx = NULL((void*)0); | ||||
| 7161 | finfo.internal_syms = NULL((void*)0); | ||||
| 7162 | finfo.indices = NULL((void*)0); | ||||
| 7163 | finfo.sections = NULL((void*)0); | ||||
| 7164 | finfo.symbuf = NULL((void*)0); | ||||
| 7165 | finfo.symshndxbuf = NULL((void*)0); | ||||
| 7166 | finfo.symbuf_count = 0; | ||||
| 7167 | finfo.shndxbuf_size = 0; | ||||
| 7168 | |||||
| 7169 | /* Count up the number of relocations we will output for each output | ||||
| 7170 | section, so that we know the sizes of the reloc sections. We | ||||
| 7171 | also figure out some maximum sizes. */ | ||||
| 7172 | max_contents_size = 0; | ||||
| 7173 | max_external_reloc_size = 0; | ||||
| 7174 | max_internal_reloc_count = 0; | ||||
| 7175 | max_sym_count = 0; | ||||
| 7176 | max_sym_shndx_count = 0; | ||||
| 7177 | merged = FALSE0; | ||||
| 7178 | for (o = abfd->sections; o != NULL((void*)0); o = o->next) | ||||
| 7179 | { | ||||
| 7180 | struct bfd_elf_section_data *esdo = elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd); | ||||
| 7181 | o->reloc_count = 0; | ||||
| 7182 | |||||
| 7183 | for (p = o->link_order_head; p != NULL((void*)0); p = p->next) | ||||
| 7184 | { | ||||
| 7185 | unsigned int reloc_count = 0; | ||||
| 7186 | struct bfd_elf_section_data *esdi = NULL((void*)0); | ||||
| 7187 | unsigned int *rel_count1; | ||||
| 7188 | |||||
| 7189 | if (p->type == bfd_section_reloc_link_order | ||||
| 7190 | || p->type == bfd_symbol_reloc_link_order) | ||||
| 7191 | reloc_count = 1; | ||||
| 7192 | else if (p->type == bfd_indirect_link_order) | ||||
| 7193 | { | ||||
| 7194 | asection *sec; | ||||
| 7195 | |||||
| 7196 | sec = p->u.indirect.section; | ||||
| 7197 | esdi = elf_section_data (sec)((struct bfd_elf_section_data*)sec->used_by_bfd); | ||||
| 7198 | |||||
| 7199 | /* Mark all sections which are to be included in the | ||||
| 7200 | link. This will normally be every section. We need | ||||
| 7201 | to do this so that we can identify any sections which | ||||
| 7202 | the linker has decided to not include. */ | ||||
| 7203 | sec->linker_mark = TRUE1; | ||||
| 7204 | |||||
| 7205 | if (sec->flags & SEC_MERGE0x20000000) | ||||
| 7206 | merged = TRUE1; | ||||
| 7207 | |||||
| 7208 | if (info->relocatable || info->emitrelocations) | ||||
| 7209 | reloc_count = sec->reloc_count; | ||||
| 7210 | else if (bed->elf_backend_count_relocs) | ||||
| 7211 | { | ||||
| 7212 | Elf_Internal_Rela * relocs; | ||||
| 7213 | |||||
| 7214 | relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL((void*)0), NULL((void*)0), | ||||
| 7215 | info->keep_memory); | ||||
| 7216 | |||||
| 7217 | reloc_count = (*bed->elf_backend_count_relocs) (sec, relocs); | ||||
| 7218 | |||||
| 7219 | if (elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->relocs != relocs) | ||||
| 7220 | free (relocs); | ||||
| 7221 | } | ||||
| 7222 | |||||
| 7223 | if (sec->_raw_size > max_contents_size) | ||||
| 7224 | max_contents_size = sec->_raw_size; | ||||
| 7225 | if (sec->_cooked_size > max_contents_size) | ||||
| 7226 | max_contents_size = sec->_cooked_size; | ||||
| 7227 | |||||
| 7228 | /* We are interested in just local symbols, not all | ||||
| 7229 | symbols. */ | ||||
| 7230 | if (bfd_get_flavour (sec->owner)((sec->owner)->xvec->flavour) == bfd_target_elf_flavour | ||||
| 7231 | && (sec->owner->flags & DYNAMIC0x40) == 0) | ||||
| 7232 | { | ||||
| 7233 | size_t sym_count; | ||||
| 7234 | |||||
| 7235 | if (elf_bad_symtab (sec->owner)(((sec->owner) -> tdata.elf_obj_data) -> bad_symtab)) | ||||
| 7236 | sym_count = (elf_tdata (sec->owner)((sec->owner) -> tdata.elf_obj_data)->symtab_hdr.sh_size | ||||
| 7237 | / bed->s->sizeof_sym); | ||||
| 7238 | else | ||||
| 7239 | sym_count = elf_tdata (sec->owner)((sec->owner) -> tdata.elf_obj_data)->symtab_hdr.sh_info; | ||||
| 7240 | |||||
| 7241 | if (sym_count > max_sym_count) | ||||
| 7242 | max_sym_count = sym_count; | ||||
| 7243 | |||||
| 7244 | if (sym_count > max_sym_shndx_count | ||||
| 7245 | && elf_symtab_shndx (sec->owner)(((sec->owner) -> tdata.elf_obj_data) -> symtab_shndx_section ) != 0) | ||||
| 7246 | max_sym_shndx_count = sym_count; | ||||
| 7247 | |||||
| 7248 | if ((sec->flags & SEC_RELOC0x004) != 0) | ||||
| 7249 | { | ||||
| 7250 | size_t ext_size; | ||||
| 7251 | |||||
| 7252 | ext_size = elf_section_data (sec)((struct bfd_elf_section_data*)sec->used_by_bfd)->rel_hdr.sh_size; | ||||
| 7253 | if (ext_size > max_external_reloc_size) | ||||
| 7254 | max_external_reloc_size = ext_size; | ||||
| 7255 | if (sec->reloc_count > max_internal_reloc_count) | ||||
| 7256 | max_internal_reloc_count = sec->reloc_count; | ||||
| 7257 | } | ||||
| 7258 | } | ||||
| 7259 | } | ||||
| 7260 | |||||
| 7261 | if (reloc_count == 0) | ||||
| 7262 | continue; | ||||
| 7263 | |||||
| 7264 | o->reloc_count += reloc_count; | ||||
| 7265 | |||||
| 7266 | /* MIPS may have a mix of REL and RELA relocs on sections. | ||||
| 7267 | To support this curious ABI we keep reloc counts in | ||||
| 7268 | elf_section_data too. We must be careful to add the | ||||
| 7269 | relocations from the input section to the right output | ||||
| 7270 | count. FIXME: Get rid of one count. We have | ||||
| 7271 | o->reloc_count == esdo->rel_count + esdo->rel_count2. */ | ||||
| 7272 | rel_count1 = &esdo->rel_count; | ||||
| 7273 | if (esdi != NULL((void*)0)) | ||||
| 7274 | { | ||||
| 7275 | bfd_boolean same_size; | ||||
| 7276 | bfd_size_type entsize1; | ||||
| 7277 | |||||
| 7278 | entsize1 = esdi->rel_hdr.sh_entsize; | ||||
| 7279 | BFD_ASSERT (entsize1 == bed->s->sizeof_rel{ if (!(entsize1 == bed->s->sizeof_rel || entsize1 == bed ->s->sizeof_rela)) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,7280); } | ||||
| 7280 | || entsize1 == bed->s->sizeof_rela){ if (!(entsize1 == bed->s->sizeof_rel || entsize1 == bed ->s->sizeof_rela)) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,7280); }; | ||||
| 7281 | same_size = !o->use_rela_p == (entsize1 == bed->s->sizeof_rel); | ||||
| 7282 | |||||
| 7283 | if (!same_size) | ||||
| 7284 | rel_count1 = &esdo->rel_count2; | ||||
| 7285 | |||||
| 7286 | if (esdi->rel_hdr2 != NULL((void*)0)) | ||||
| 7287 | { | ||||
| 7288 | bfd_size_type entsize2 = esdi->rel_hdr2->sh_entsize; | ||||
| 7289 | unsigned int alt_count; | ||||
| 7290 | unsigned int *rel_count2; | ||||
| 7291 | |||||
| 7292 | BFD_ASSERT (entsize2 != entsize1{ if (!(entsize2 != entsize1 && (entsize2 == bed-> s->sizeof_rel || entsize2 == bed->s->sizeof_rela))) bfd_assert ("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c",7294); } | ||||
| 7293 | && (entsize2 == bed->s->sizeof_rel{ if (!(entsize2 != entsize1 && (entsize2 == bed-> s->sizeof_rel || entsize2 == bed->s->sizeof_rela))) bfd_assert ("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c",7294); } | ||||
| 7294 | || entsize2 == bed->s->sizeof_rela)){ if (!(entsize2 != entsize1 && (entsize2 == bed-> s->sizeof_rel || entsize2 == bed->s->sizeof_rela))) bfd_assert ("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c",7294); }; | ||||
| 7295 | |||||
| 7296 | rel_count2 = &esdo->rel_count2; | ||||
| 7297 | if (!same_size) | ||||
| 7298 | rel_count2 = &esdo->rel_count; | ||||
| 7299 | |||||
| 7300 | /* The following is probably too simplistic if the | ||||
| 7301 | backend counts output relocs unusually. */ | ||||
| 7302 | BFD_ASSERT (bed->elf_backend_count_relocs == NULL){ if (!(bed->elf_backend_count_relocs == ((void*)0))) bfd_assert ("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c",7302); }; | ||||
| 7303 | alt_count = NUM_SHDR_ENTRIES (esdi->rel_hdr2)((esdi->rel_hdr2)->sh_size / (esdi->rel_hdr2)->sh_entsize ); | ||||
| 7304 | *rel_count2 += alt_count; | ||||
| 7305 | reloc_count -= alt_count; | ||||
| 7306 | } | ||||
| 7307 | } | ||||
| 7308 | *rel_count1 += reloc_count; | ||||
| 7309 | } | ||||
| 7310 | |||||
| 7311 | if (o->reloc_count > 0) | ||||
| 7312 | o->flags |= SEC_RELOC0x004; | ||||
| 7313 | else | ||||
| 7314 | { | ||||
| 7315 | /* Explicitly clear the SEC_RELOC flag. The linker tends to | ||||
| 7316 | set it (this is probably a bug) and if it is set | ||||
| 7317 | assign_section_numbers will create a reloc section. */ | ||||
| 7318 | o->flags &=~ SEC_RELOC0x004; | ||||
| 7319 | } | ||||
| 7320 | |||||
| 7321 | /* If the SEC_ALLOC flag is not set, force the section VMA to | ||||
| 7322 | zero. This is done in elf_fake_sections as well, but forcing | ||||
| 7323 | the VMA to 0 here will ensure that relocs against these | ||||
| 7324 | sections are handled correctly. */ | ||||
| 7325 | if ((o->flags & SEC_ALLOC0x001) == 0 | ||||
| 7326 | && ! o->user_set_vma) | ||||
| 7327 | o->vma = 0; | ||||
| 7328 | } | ||||
| 7329 | |||||
| 7330 | if (! info->relocatable && merged) | ||||
| 7331 | elf_link_hash_traverse (elf_hash_table (info),(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (_bfd_elf_link_sec_merge_syms), (abfd))) | ||||
| 7332 | _bfd_elf_link_sec_merge_syms, abfd)(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (_bfd_elf_link_sec_merge_syms), (abfd))); | ||||
| 7333 | |||||
| 7334 | /* Figure out the file positions for everything but the symbol table | ||||
| 7335 | and the relocs. We set symcount to force assign_section_numbers | ||||
| 7336 | to create a symbol table. */ | ||||
| 7337 | bfd_get_symcount (abfd)((abfd)->symcount) = info->strip == strip_all ? 0 : 1; | ||||
| 7338 | BFD_ASSERT (! abfd->output_has_begun){ if (!(! abfd->output_has_begun)) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,7338); }; | ||||
| 7339 | if (! _bfd_elf_compute_section_file_positions (abfd, info)) | ||||
| 7340 | goto error_return; | ||||
| 7341 | |||||
| 7342 | /* That created the reloc sections. Set their sizes, and assign | ||||
| 7343 | them file positions, and allocate some buffers. */ | ||||
| 7344 | for (o = abfd->sections; o != NULL((void*)0); o = o->next) | ||||
| 7345 | { | ||||
| 7346 | if ((o->flags & SEC_RELOC0x004) != 0) | ||||
| 7347 | { | ||||
| 7348 | if (!(_bfd_elf_link_size_reloc_section | ||||
| 7349 | (abfd, &elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hdr, o))) | ||||
| 7350 | goto error_return; | ||||
| 7351 | |||||
| 7352 | if (elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hdr2 | ||||
| 7353 | && !(_bfd_elf_link_size_reloc_section | ||||
| 7354 | (abfd, elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hdr2, o))) | ||||
| 7355 | goto error_return; | ||||
| 7356 | } | ||||
| 7357 | |||||
| 7358 | /* Now, reset REL_COUNT and REL_COUNT2 so that we can use them | ||||
| 7359 | to count upwards while actually outputting the relocations. */ | ||||
| 7360 | elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_count = 0; | ||||
| 7361 | elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_count2 = 0; | ||||
| 7362 | } | ||||
| 7363 | |||||
| 7364 | _bfd_elf_assign_file_positions_for_relocs (abfd); | ||||
| 7365 | |||||
| 7366 | /* We have now assigned file positions for all the sections except | ||||
| 7367 | .symtab and .strtab. We start the .symtab section at the current | ||||
| 7368 | file position, and write directly to it. We build the .strtab | ||||
| 7369 | section in memory. */ | ||||
| 7370 | bfd_get_symcount (abfd)((abfd)->symcount) = 0; | ||||
| 7371 | symtab_hdr = &elf_tdata (abfd)((abfd) -> tdata.elf_obj_data)->symtab_hdr; | ||||
| 7372 | /* sh_name is set in prep_headers. */ | ||||
| 7373 | symtab_hdr->sh_type = SHT_SYMTAB2; | ||||
| 7374 | /* sh_flags, sh_addr and sh_size all start off zero. */ | ||||
| 7375 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | ||||
| 7376 | /* sh_link is set in assign_section_numbers. */ | ||||
| 7377 | /* sh_info is set below. */ | ||||
| 7378 | /* sh_offset is set just below. */ | ||||
| 7379 | symtab_hdr->sh_addralign = 1 << bed->s->log_file_align; | ||||
| 7380 | |||||
| 7381 | off = elf_tdata (abfd)((abfd) -> tdata.elf_obj_data)->next_file_pos; | ||||
| 7382 | off = _bfd_elf_assign_file_position_for_section (symtab_hdr, off, TRUE1); | ||||
| 7383 | |||||
| 7384 | /* Note that at this point elf_tdata (abfd)->next_file_pos is | ||||
| 7385 | incorrect. We do not yet know the size of the .symtab section. | ||||
| 7386 | We correct next_file_pos below, after we do know the size. */ | ||||
| 7387 | |||||
| 7388 | /* Allocate a buffer to hold swapped out symbols. This is to avoid | ||||
| 7389 | continuously seeking to the right position in the file. */ | ||||
| 7390 | if (! info->keep_memory || max_sym_count < 20) | ||||
| 7391 | finfo.symbuf_size = 20; | ||||
| 7392 | else | ||||
| 7393 | finfo.symbuf_size = max_sym_count; | ||||
| 7394 | amt = finfo.symbuf_size; | ||||
| 7395 | amt *= bed->s->sizeof_sym; | ||||
| 7396 | finfo.symbuf = bfd_malloc (amt); | ||||
| 7397 | if (finfo.symbuf == NULL((void*)0)) | ||||
| 7398 | goto error_return; | ||||
| 7399 | if (elf_numsections (abfd)(((abfd) -> tdata.elf_obj_data) -> num_elf_sections) > SHN_LORESERVE0xFF00) | ||||
| 7400 | { | ||||
| 7401 | /* Wild guess at number of output symbols. realloc'd as needed. */ | ||||
| 7402 | amt = 2 * max_sym_count + elf_numsections (abfd)(((abfd) -> tdata.elf_obj_data) -> num_elf_sections) + 1000; | ||||
| 7403 | finfo.shndxbuf_size = amt; | ||||
| 7404 | amt *= sizeof (Elf_External_Sym_Shndx); | ||||
| 7405 | finfo.symshndxbuf = bfd_zmalloc (amt); | ||||
| 7406 | if (finfo.symshndxbuf == NULL((void*)0)) | ||||
| 7407 | goto error_return; | ||||
| 7408 | } | ||||
| 7409 | |||||
| 7410 | /* Start writing out the symbol table. The first symbol is always a | ||||
| 7411 | dummy symbol. */ | ||||
| 7412 | if (info->strip != strip_all | ||||
| 7413 | || emit_relocs) | ||||
| 7414 | { | ||||
| 7415 | elfsym.st_value = 0; | ||||
| 7416 | elfsym.st_size = 0; | ||||
| 7417 | elfsym.st_info = 0; | ||||
| 7418 | elfsym.st_other = 0; | ||||
| 7419 | elfsym.st_shndx = SHN_UNDEF0; | ||||
| 7420 | if (! elf_link_output_sym (&finfo, NULL((void*)0), &elfsym, bfd_und_section_ptr((asection *) &bfd_und_section), | ||||
| 7421 | NULL((void*)0))) | ||||
| 7422 | goto error_return; | ||||
| 7423 | } | ||||
| 7424 | |||||
| 7425 | #if 0 | ||||
| 7426 | /* Some standard ELF linkers do this, but we don't because it causes | ||||
| 7427 | bootstrap comparison failures. */ | ||||
| 7428 | /* Output a file symbol for the output file as the second symbol. | ||||
| 7429 | We output this even if we are discarding local symbols, although | ||||
| 7430 | I'm not sure if this is correct. */ | ||||
| 7431 | elfsym.st_value = 0; | ||||
| 7432 | elfsym.st_size = 0; | ||||
| 7433 | elfsym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE)(((0) << 4) + ((4) & 0xF)); | ||||
| 7434 | elfsym.st_other = 0; | ||||
| 7435 | elfsym.st_shndx = SHN_ABS0xFFF1; | ||||
| 7436 | if (! elf_link_output_sym (&finfo, bfd_get_filename (abfd)((char *) (abfd)->filename), | ||||
| 7437 | &elfsym, bfd_abs_section_ptr((asection *) &bfd_abs_section), NULL((void*)0))) | ||||
| 7438 | goto error_return; | ||||
| 7439 | #endif | ||||
| 7440 | |||||
| 7441 | /* Output a symbol for each section. We output these even if we are | ||||
| 7442 | discarding local symbols, since they are used for relocs. These | ||||
| 7443 | symbols have no names. We store the index of each one in the | ||||
| 7444 | index field of the section, so that we can find it again when | ||||
| 7445 | outputting relocs. */ | ||||
| 7446 | if (info->strip != strip_all | ||||
| 7447 | || emit_relocs) | ||||
| 7448 | { | ||||
| 7449 | elfsym.st_size = 0; | ||||
| 7450 | elfsym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION)(((0) << 4) + ((3) & 0xF)); | ||||
| 7451 | elfsym.st_other = 0; | ||||
| 7452 | for (i = 1; i < elf_numsections (abfd)(((abfd) -> tdata.elf_obj_data) -> num_elf_sections); i++) | ||||
| 7453 | { | ||||
| 7454 | o = bfd_section_from_elf_index (abfd, i); | ||||
| 7455 | if (o != NULL((void*)0)) | ||||
| 7456 | o->target_index = bfd_get_symcount (abfd)((abfd)->symcount); | ||||
| 7457 | elfsym.st_shndx = i; | ||||
| 7458 | if (info->relocatable || o == NULL((void*)0)) | ||||
| 7459 | elfsym.st_value = 0; | ||||
| 7460 | else | ||||
| 7461 | elfsym.st_value = o->vma; | ||||
| 7462 | if (! elf_link_output_sym (&finfo, NULL((void*)0), &elfsym, o, NULL((void*)0))) | ||||
| 7463 | goto error_return; | ||||
| 7464 | if (i == SHN_LORESERVE0xFF00 - 1) | ||||
| 7465 | i += SHN_HIRESERVE0xFFFF + 1 - SHN_LORESERVE0xFF00; | ||||
| 7466 | } | ||||
| 7467 | } | ||||
| 7468 | |||||
| 7469 | /* Allocate some memory to hold information read in from the input | ||||
| 7470 | files. */ | ||||
| 7471 | if (max_contents_size != 0) | ||||
| 7472 | { | ||||
| 7473 | finfo.contents = bfd_malloc (max_contents_size); | ||||
| 7474 | if (finfo.contents == NULL((void*)0)) | ||||
| 7475 | goto error_return; | ||||
| 7476 | } | ||||
| 7477 | |||||
| 7478 | if (max_external_reloc_size != 0) | ||||
| 7479 | { | ||||
| 7480 | finfo.external_relocs = bfd_malloc (max_external_reloc_size); | ||||
| 7481 | if (finfo.external_relocs == NULL((void*)0)) | ||||
| 7482 | goto error_return; | ||||
| 7483 | } | ||||
| 7484 | |||||
| 7485 | if (max_internal_reloc_count != 0) | ||||
| 7486 | { | ||||
| 7487 | amt = max_internal_reloc_count * bed->s->int_rels_per_ext_rel; | ||||
| 7488 | amt *= sizeof (Elf_Internal_Rela); | ||||
| 7489 | finfo.internal_relocs = bfd_malloc (amt); | ||||
| 7490 | if (finfo.internal_relocs == NULL((void*)0)) | ||||
| 7491 | goto error_return; | ||||
| 7492 | } | ||||
| 7493 | |||||
| 7494 | if (max_sym_count != 0) | ||||
| 7495 | { | ||||
| 7496 | amt = max_sym_count * bed->s->sizeof_sym; | ||||
| 7497 | finfo.external_syms = bfd_malloc (amt); | ||||
| 7498 | if (finfo.external_syms == NULL((void*)0)) | ||||
| 7499 | goto error_return; | ||||
| 7500 | |||||
| 7501 | amt = max_sym_count * sizeof (Elf_Internal_Sym); | ||||
| 7502 | finfo.internal_syms = bfd_malloc (amt); | ||||
| 7503 | if (finfo.internal_syms == NULL((void*)0)) | ||||
| 7504 | goto error_return; | ||||
| 7505 | |||||
| 7506 | amt = max_sym_count * sizeof (long); | ||||
| 7507 | finfo.indices = bfd_malloc (amt); | ||||
| 7508 | if (finfo.indices == NULL((void*)0)) | ||||
| 7509 | goto error_return; | ||||
| 7510 | |||||
| 7511 | amt = max_sym_count * sizeof (asection *); | ||||
| 7512 | finfo.sections = bfd_malloc (amt); | ||||
| 7513 | if (finfo.sections == NULL((void*)0)) | ||||
| 7514 | goto error_return; | ||||
| 7515 | } | ||||
| 7516 | |||||
| 7517 | if (max_sym_shndx_count != 0) | ||||
| 7518 | { | ||||
| 7519 | amt = max_sym_shndx_count * sizeof (Elf_External_Sym_Shndx); | ||||
| 7520 | finfo.locsym_shndx = bfd_malloc (amt); | ||||
| 7521 | if (finfo.locsym_shndx == NULL((void*)0)) | ||||
| 7522 | goto error_return; | ||||
| 7523 | } | ||||
| 7524 | |||||
| 7525 | if (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->tls_sec) | ||||
| 7526 | { | ||||
| 7527 | bfd_vma base, end = 0; | ||||
| 7528 | asection *sec; | ||||
| 7529 | |||||
| 7530 | for (sec = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->tls_sec; | ||||
| 7531 | sec && (sec->flags & SEC_THREAD_LOCAL0x1000); | ||||
| 7532 | sec = sec->next) | ||||
| 7533 | { | ||||
| 7534 | bfd_vma size = sec->_raw_size; | ||||
| 7535 | |||||
| 7536 | if (size == 0 && (sec->flags & SEC_HAS_CONTENTS0x200) == 0) | ||||
| 7537 | { | ||||
| 7538 | struct bfd_link_order *o; | ||||
| 7539 | |||||
| 7540 | for (o = sec->link_order_head; o != NULL((void*)0); o = o->next) | ||||
| 7541 | if (size < o->offset + o->size) | ||||
| 7542 | size = o->offset + o->size; | ||||
| 7543 | } | ||||
| 7544 | end = sec->vma + size; | ||||
| 7545 | } | ||||
| 7546 | base = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->tls_sec->vma; | ||||
| 7547 | end = align_power (end, elf_hash_table (info)->tls_sec->alignment_power)(((end) + ((bfd_vma) 1 << (((struct elf_link_hash_table *) ((info)->hash))->tls_sec->alignment_power)) - 1) & ((bfd_vma) -1 << (((struct elf_link_hash_table * ) ((info)->hash))->tls_sec->alignment_power))); | ||||
| 7548 | elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->tls_size = end - base; | ||||
| 7549 | } | ||||
| 7550 | |||||
| 7551 | /* Since ELF permits relocations to be against local symbols, we | ||||
| 7552 | must have the local symbols available when we do the relocations. | ||||
| 7553 | Since we would rather only read the local symbols once, and we | ||||
| 7554 | would rather not keep them in memory, we handle all the | ||||
| 7555 | relocations for a single input file at the same time. | ||||
| 7556 | |||||
| 7557 | Unfortunately, there is no way to know the total number of local | ||||
| 7558 | symbols until we have seen all of them, and the local symbol | ||||
| 7559 | indices precede the global symbol indices. This means that when | ||||
| 7560 | we are generating relocatable output, and we see a reloc against | ||||
| 7561 | a global symbol, we can not know the symbol index until we have | ||||
| 7562 | finished examining all the local symbols to see which ones we are | ||||
| 7563 | going to output. To deal with this, we keep the relocations in | ||||
| 7564 | memory, and don't output them until the end of the link. This is | ||||
| 7565 | an unfortunate waste of memory, but I don't see a good way around | ||||
| 7566 | it. Fortunately, it only happens when performing a relocatable | ||||
| 7567 | link, which is not the common case. FIXME: If keep_memory is set | ||||
| 7568 | we could write the relocs out and then read them again; I don't | ||||
| 7569 | know how bad the memory loss will be. */ | ||||
| 7570 | |||||
| 7571 | for (sub = info->input_bfds; sub != NULL((void*)0); sub = sub->link_next) | ||||
| 7572 | sub->output_has_begun = FALSE0; | ||||
| 7573 | for (o = abfd->sections; o != NULL((void*)0); o = o->next) | ||||
| 7574 | { | ||||
| 7575 | for (p = o->link_order_head; p != NULL((void*)0); p = p->next) | ||||
| 7576 | { | ||||
| 7577 | if (p->type == bfd_indirect_link_order | ||||
| 7578 | && (bfd_get_flavour ((sub = p->u.indirect.section->owner))(((sub = p->u.indirect.section->owner))->xvec->flavour ) | ||||
| 7579 | == bfd_target_elf_flavour) | ||||
| 7580 | && elf_elfheader (sub)(((sub) -> tdata.elf_obj_data) -> elf_header)->e_ident[EI_CLASS4] == bed->s->elfclass) | ||||
| 7581 | { | ||||
| 7582 | if (! sub->output_has_begun) | ||||
| 7583 | { | ||||
| 7584 | if (! elf_link_input_bfd (&finfo, sub)) | ||||
| 7585 | goto error_return; | ||||
| 7586 | sub->output_has_begun = TRUE1; | ||||
| 7587 | } | ||||
| 7588 | } | ||||
| 7589 | else if (p->type == bfd_section_reloc_link_order | ||||
| 7590 | || p->type == bfd_symbol_reloc_link_order) | ||||
| 7591 | { | ||||
| 7592 | if (! elf_reloc_link_order (abfd, info, o, p)) | ||||
| 7593 | goto error_return; | ||||
| 7594 | } | ||||
| 7595 | else | ||||
| 7596 | { | ||||
| 7597 | if (! _bfd_default_link_order (abfd, info, o, p)) | ||||
| 7598 | goto error_return; | ||||
| 7599 | } | ||||
| 7600 | } | ||||
| 7601 | } | ||||
| 7602 | |||||
| 7603 | /* Output any global symbols that got converted to local in a | ||||
| 7604 | version script or due to symbol visibility. We do this in a | ||||
| 7605 | separate step since ELF requires all local symbols to appear | ||||
| 7606 | prior to any global symbols. FIXME: We should only do this if | ||||
| 7607 | some global symbols were, in fact, converted to become local. | ||||
| 7608 | FIXME: Will this work correctly with the Irix 5 linker? */ | ||||
| 7609 | eoinfo.failed = FALSE0; | ||||
| 7610 | eoinfo.finfo = &finfo; | ||||
| 7611 | eoinfo.localsyms = TRUE1; | ||||
| 7612 | elf_link_hash_traverse (elf_hash_table (info), elf_link_output_extsym,(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (elf_link_output_extsym), (&eoinfo))) | ||||
| 7613 | &eoinfo)(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (elf_link_output_extsym), (&eoinfo))); | ||||
| 7614 | if (eoinfo.failed) | ||||
| 7615 | return FALSE0; | ||||
| 7616 | |||||
| 7617 | /* That wrote out all the local symbols. Finish up the symbol table | ||||
| 7618 | with the global symbols. Even if we want to strip everything we | ||||
| 7619 | can, we still need to deal with those global symbols that got | ||||
| 7620 | converted to local in a version script. */ | ||||
| 7621 | |||||
| 7622 | /* The sh_info field records the index of the first non local symbol. */ | ||||
| 7623 | symtab_hdr->sh_info = bfd_get_symcount (abfd)((abfd)->symcount); | ||||
| 7624 | |||||
| 7625 | if (dynamic | ||||
| 7626 | && finfo.dynsym_sec->output_section != bfd_abs_section_ptr((asection *) &bfd_abs_section)) | ||||
| 7627 | { | ||||
| 7628 | Elf_Internal_Sym sym; | ||||
| 7629 | bfd_byte *dynsym = finfo.dynsym_sec->contents; | ||||
| 7630 | long last_local = 0; | ||||
| 7631 | |||||
| 7632 | /* Write out the section symbols for the output sections. */ | ||||
| 7633 | if (info->shared) | ||||
| 7634 | { | ||||
| 7635 | asection *s; | ||||
| 7636 | |||||
| 7637 | sym.st_size = 0; | ||||
| 7638 | sym.st_name = 0; | ||||
| 7639 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION)(((0) << 4) + ((3) & 0xF)); | ||||
| 7640 | sym.st_other = 0; | ||||
| 7641 | |||||
| 7642 | for (s = abfd->sections; s != NULL((void*)0); s = s->next) | ||||
| 7643 | { | ||||
| 7644 | int indx; | ||||
| 7645 | bfd_byte *dest; | ||||
| 7646 | long dynindx; | ||||
| 7647 | |||||
| 7648 | indx = elf_section_data (s)((struct bfd_elf_section_data*)s->used_by_bfd)->this_idx; | ||||
| 7649 | dynindx = elf_section_data (s)((struct bfd_elf_section_data*)s->used_by_bfd)->dynindx; | ||||
| 7650 | BFD_ASSERT (indx > 0){ if (!(indx > 0)) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,7650); }; | ||||
| 7651 | sym.st_shndx = indx; | ||||
| 7652 | sym.st_value = s->vma; | ||||
| 7653 | dest = dynsym + dynindx * bed->s->sizeof_sym; | ||||
| 7654 | bed->s->swap_symbol_out (abfd, &sym, dest, 0); | ||||
| 7655 | } | ||||
| 7656 | |||||
| 7657 | last_local = bfd_count_sections (abfd)((abfd)->section_count); | ||||
| 7658 | } | ||||
| 7659 | |||||
| 7660 | /* Write out the local dynsyms. */ | ||||
| 7661 | if (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynlocal) | ||||
| 7662 | { | ||||
| 7663 | struct elf_link_local_dynamic_entry *e; | ||||
| 7664 | for (e = elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynlocal; e ; e = e->next) | ||||
| 7665 | { | ||||
| 7666 | asection *s; | ||||
| 7667 | bfd_byte *dest; | ||||
| 7668 | |||||
| 7669 | sym.st_size = e->isym.st_size; | ||||
| 7670 | sym.st_other = e->isym.st_other; | ||||
| 7671 | |||||
| 7672 | /* Copy the internal symbol as is. | ||||
| 7673 | Note that we saved a word of storage and overwrote | ||||
| 7674 | the original st_name with the dynstr_index. */ | ||||
| 7675 | sym = e->isym; | ||||
| 7676 | |||||
| 7677 | if (e->isym.st_shndx != SHN_UNDEF0 | ||||
| 7678 | && (e->isym.st_shndx < SHN_LORESERVE0xFF00 | ||||
| 7679 | || e->isym.st_shndx > SHN_HIRESERVE0xFFFF)) | ||||
| 7680 | { | ||||
| 7681 | s = bfd_section_from_elf_index (e->input_bfd, | ||||
| 7682 | e->isym.st_shndx); | ||||
| 7683 | |||||
| 7684 | sym.st_shndx = | ||||
| 7685 | elf_section_data (s->output_section)((struct bfd_elf_section_data*)s->output_section->used_by_bfd )->this_idx; | ||||
| 7686 | sym.st_value = (s->output_section->vma | ||||
| 7687 | + s->output_offset | ||||
| 7688 | + e->isym.st_value); | ||||
| 7689 | } | ||||
| 7690 | |||||
| 7691 | if (last_local < e->dynindx) | ||||
| 7692 | last_local = e->dynindx; | ||||
| 7693 | |||||
| 7694 | dest = dynsym + e->dynindx * bed->s->sizeof_sym; | ||||
| 7695 | bed->s->swap_symbol_out (abfd, &sym, dest, 0); | ||||
| 7696 | } | ||||
| 7697 | } | ||||
| 7698 | |||||
| 7699 | elf_section_data (finfo.dynsym_sec->output_section)((struct bfd_elf_section_data*)finfo.dynsym_sec->output_section ->used_by_bfd)->this_hdr.sh_info = | ||||
| 7700 | last_local + 1; | ||||
| 7701 | } | ||||
| 7702 | |||||
| 7703 | /* We get the global symbols from the hash table. */ | ||||
| 7704 | eoinfo.failed = FALSE0; | ||||
| 7705 | eoinfo.localsyms = FALSE0; | ||||
| 7706 | eoinfo.finfo = &finfo; | ||||
| 7707 | elf_link_hash_traverse (elf_hash_table (info), elf_link_output_extsym,(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (elf_link_output_extsym), (&eoinfo))) | ||||
| 7708 | &eoinfo)(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (elf_link_output_extsym), (&eoinfo))); | ||||
| 7709 | if (eoinfo.failed) | ||||
| 7710 | return FALSE0; | ||||
| 7711 | |||||
| 7712 | /* If backend needs to output some symbols not present in the hash | ||||
| 7713 | table, do it now. */ | ||||
| 7714 | if (bed->elf_backend_output_arch_syms) | ||||
| 7715 | { | ||||
| 7716 | typedef bfd_boolean (*out_sym_func) | ||||
| 7717 | (void *, const char *, Elf_Internal_Sym *, asection *, | ||||
| 7718 | struct elf_link_hash_entry *); | ||||
| 7719 | |||||
| 7720 | if (! ((*bed->elf_backend_output_arch_syms) | ||||
| 7721 | (abfd, info, &finfo, (out_sym_func) elf_link_output_sym))) | ||||
| 7722 | return FALSE0; | ||||
| 7723 | } | ||||
| 7724 | |||||
| 7725 | /* Flush all symbols to the file. */ | ||||
| 7726 | if (! elf_link_flush_output_syms (&finfo, bed)) | ||||
| 7727 | return FALSE0; | ||||
| 7728 | |||||
| 7729 | /* Now we know the size of the symtab section. */ | ||||
| 7730 | off += symtab_hdr->sh_size; | ||||
| 7731 | |||||
| 7732 | symtab_shndx_hdr = &elf_tdata (abfd)((abfd) -> tdata.elf_obj_data)->symtab_shndx_hdr; | ||||
| 7733 | if (symtab_shndx_hdr->sh_name != 0) | ||||
| 7734 | { | ||||
| 7735 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX18; | ||||
| 7736 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | ||||
| 7737 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | ||||
| 7738 | amt = bfd_get_symcount (abfd)((abfd)->symcount) * sizeof (Elf_External_Sym_Shndx); | ||||
| 7739 | symtab_shndx_hdr->sh_size = amt; | ||||
| 7740 | |||||
| 7741 | off = _bfd_elf_assign_file_position_for_section (symtab_shndx_hdr, | ||||
| 7742 | off, TRUE1); | ||||
| 7743 | |||||
| 7744 | if (bfd_seek (abfd, symtab_shndx_hdr->sh_offset, SEEK_SET0) != 0 | ||||
| 7745 | || (bfd_bwrite (finfo.symshndxbuf, amt, abfd) != amt)) | ||||
| 7746 | return FALSE0; | ||||
| 7747 | } | ||||
| 7748 | |||||
| 7749 | |||||
| 7750 | /* Finish up and write out the symbol string table (.strtab) | ||||
| 7751 | section. */ | ||||
| 7752 | symstrtab_hdr = &elf_tdata (abfd)((abfd) -> tdata.elf_obj_data)->strtab_hdr; | ||||
| 7753 | /* sh_name was set in prep_headers. */ | ||||
| 7754 | symstrtab_hdr->sh_type = SHT_STRTAB3; | ||||
| 7755 | symstrtab_hdr->sh_flags = 0; | ||||
| 7756 | symstrtab_hdr->sh_addr = 0; | ||||
| 7757 | symstrtab_hdr->sh_size = _bfd_stringtab_size (finfo.symstrtab); | ||||
| 7758 | symstrtab_hdr->sh_entsize = 0; | ||||
| 7759 | symstrtab_hdr->sh_link = 0; | ||||
| 7760 | symstrtab_hdr->sh_info = 0; | ||||
| 7761 | /* sh_offset is set just below. */ | ||||
| 7762 | symstrtab_hdr->sh_addralign = 1; | ||||
| 7763 | |||||
| 7764 | off = _bfd_elf_assign_file_position_for_section (symstrtab_hdr, off, TRUE1); | ||||
| 7765 | elf_tdata (abfd)((abfd) -> tdata.elf_obj_data)->next_file_pos = off; | ||||
| 7766 | |||||
| 7767 | if (bfd_get_symcount (abfd)((abfd)->symcount) > 0) | ||||
| 7768 | { | ||||
| 7769 | if (bfd_seek (abfd, symstrtab_hdr->sh_offset, SEEK_SET0) != 0 | ||||
| 7770 | || ! _bfd_stringtab_emit (abfd, finfo.symstrtab)) | ||||
| 7771 | return FALSE0; | ||||
| 7772 | } | ||||
| 7773 | |||||
| 7774 | /* Adjust the relocs to have the correct symbol indices. */ | ||||
| 7775 | for (o = abfd->sections; o != NULL((void*)0); o = o->next) | ||||
| 7776 | { | ||||
| 7777 | if ((o->flags & SEC_RELOC0x004) == 0) | ||||
| 7778 | continue; | ||||
| 7779 | |||||
| 7780 | elf_link_adjust_relocs (abfd, &elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hdr, | ||||
| 7781 | elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_count, | ||||
| 7782 | elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hashes); | ||||
| 7783 | if (elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hdr2 != NULL((void*)0)) | ||||
| 7784 | elf_link_adjust_relocs (abfd, elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hdr2, | ||||
| 7785 | elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_count2, | ||||
| 7786 | (elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hashes | ||||
| 7787 | + elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_count)); | ||||
| 7788 | |||||
| 7789 | /* Set the reloc_count field to 0 to prevent write_relocs from | ||||
| 7790 | trying to swap the relocs out itself. */ | ||||
| 7791 | o->reloc_count = 0; | ||||
| 7792 | } | ||||
| 7793 | |||||
| 7794 | if (dynamic && info->combreloc && dynobj != NULL((void*)0)) | ||||
| 7795 | relativecount = elf_link_sort_relocs (abfd, info, &reldyn); | ||||
| 7796 | |||||
| 7797 | /* If we are linking against a dynamic object, or generating a | ||||
| 7798 | shared library, finish up the dynamic linking information. */ | ||||
| 7799 | if (dynamic) | ||||
| 7800 | { | ||||
| 7801 | bfd_byte *dyncon, *dynconend; | ||||
| 7802 | |||||
| 7803 | /* Fix up .dynamic entries. */ | ||||
| 7804 | o = bfd_get_section_by_name (dynobj, ".dynamic"); | ||||
| 7805 | BFD_ASSERT (o != NULL){ if (!(o != ((void*)0))) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,7805); }; | ||||
| 7806 | |||||
| 7807 | dyncon = o->contents; | ||||
| 7808 | dynconend = o->contents + o->_raw_size; | ||||
| 7809 | for (; dyncon < dynconend; dyncon += bed->s->sizeof_dyn) | ||||
| 7810 | { | ||||
| 7811 | Elf_Internal_Dyn dyn; | ||||
| 7812 | const char *name; | ||||
| 7813 | unsigned int type; | ||||
| 7814 | |||||
| 7815 | bed->s->swap_dyn_in (dynobj, dyncon, &dyn); | ||||
| 7816 | |||||
| 7817 | switch (dyn.d_tag) | ||||
| 7818 | { | ||||
| 7819 | default: | ||||
| 7820 | continue; | ||||
| 7821 | case DT_NULL0: | ||||
| 7822 | if (relativecount > 0 && dyncon + bed->s->sizeof_dyn < dynconend) | ||||
| 7823 | { | ||||
| 7824 | switch (elf_section_data (reldyn)((struct bfd_elf_section_data*)reldyn->used_by_bfd)->this_hdr.sh_type) | ||||
| 7825 | { | ||||
| 7826 | case SHT_REL9: dyn.d_tag = DT_RELCOUNT0x6ffffffa; break; | ||||
| 7827 | case SHT_RELA4: dyn.d_tag = DT_RELACOUNT0x6ffffff9; break; | ||||
| 7828 | default: continue; | ||||
| 7829 | } | ||||
| 7830 | dyn.d_un.d_val = relativecount; | ||||
| 7831 | relativecount = 0; | ||||
| 7832 | break; | ||||
| 7833 | } | ||||
| 7834 | continue; | ||||
| 7835 | |||||
| 7836 | case DT_INIT12: | ||||
| 7837 | name = info->init_function; | ||||
| 7838 | goto get_sym; | ||||
| 7839 | case DT_FINI13: | ||||
| 7840 | name = info->fini_function; | ||||
| 7841 | get_sym: | ||||
| 7842 | { | ||||
| 7843 | struct elf_link_hash_entry *h; | ||||
| 7844 | |||||
| 7845 | h = elf_link_hash_lookup (elf_hash_table (info), name,((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( name), (0), (0), (1))) | ||||
| 7846 | FALSE, FALSE, TRUE)((struct elf_link_hash_entry *) bfd_link_hash_lookup (&(( (struct elf_link_hash_table *) ((info)->hash)))->root, ( name), (0), (0), (1))); | ||||
| 7847 | if (h != NULL((void*)0) | ||||
| 7848 | && (h->root.type == bfd_link_hash_defined | ||||
| 7849 | || h->root.type == bfd_link_hash_defweak)) | ||||
| 7850 | { | ||||
| 7851 | dyn.d_un.d_val = h->root.u.def.value; | ||||
| 7852 | o = h->root.u.def.section; | ||||
| 7853 | if (o->output_section != NULL((void*)0)) | ||||
| 7854 | dyn.d_un.d_val += (o->output_section->vma | ||||
| 7855 | + o->output_offset); | ||||
| 7856 | else | ||||
| 7857 | { | ||||
| 7858 | /* The symbol is imported from another shared | ||||
| 7859 | library and does not apply to this one. */ | ||||
| 7860 | dyn.d_un.d_val = 0; | ||||
| 7861 | } | ||||
| 7862 | break; | ||||
| 7863 | } | ||||
| 7864 | } | ||||
| 7865 | continue; | ||||
| 7866 | |||||
| 7867 | case DT_PREINIT_ARRAYSZ33: | ||||
| 7868 | name = ".preinit_array"; | ||||
| 7869 | goto get_size; | ||||
| 7870 | case DT_INIT_ARRAYSZ27: | ||||
| 7871 | name = ".init_array"; | ||||
| 7872 | goto get_size; | ||||
| 7873 | case DT_FINI_ARRAYSZ28: | ||||
| 7874 | name = ".fini_array"; | ||||
| 7875 | get_size: | ||||
| 7876 | o = bfd_get_section_by_name (abfd, name); | ||||
| 7877 | if (o == NULL((void*)0)) | ||||
| 7878 | { | ||||
| 7879 | (*_bfd_error_handler) | ||||
| 7880 | (_("%s: could not find output section %s")("%s: could not find output section %s"), | ||||
| 7881 | bfd_get_filename (abfd)((char *) (abfd)->filename), name); | ||||
| 7882 | goto error_return; | ||||
| 7883 | } | ||||
| 7884 | if (o->_raw_size == 0) | ||||
| 7885 | (*_bfd_error_handler) | ||||
| 7886 | (_("warning: %s section has zero size")("warning: %s section has zero size"), name); | ||||
| 7887 | dyn.d_un.d_val = o->_raw_size; | ||||
| 7888 | break; | ||||
| 7889 | |||||
| 7890 | case DT_PREINIT_ARRAY32: | ||||
| 7891 | name = ".preinit_array"; | ||||
| 7892 | goto get_vma; | ||||
| 7893 | case DT_INIT_ARRAY25: | ||||
| 7894 | name = ".init_array"; | ||||
| 7895 | goto get_vma; | ||||
| 7896 | case DT_FINI_ARRAY26: | ||||
| 7897 | name = ".fini_array"; | ||||
| 7898 | goto get_vma; | ||||
| 7899 | |||||
| 7900 | case DT_HASH4: | ||||
| 7901 | name = ".hash"; | ||||
| 7902 | goto get_vma; | ||||
| 7903 | case DT_STRTAB5: | ||||
| 7904 | name = ".dynstr"; | ||||
| 7905 | goto get_vma; | ||||
| 7906 | case DT_SYMTAB6: | ||||
| 7907 | name = ".dynsym"; | ||||
| 7908 | goto get_vma; | ||||
| 7909 | case DT_VERDEF0x6ffffffc: | ||||
| 7910 | name = ".gnu.version_d"; | ||||
| 7911 | goto get_vma; | ||||
| 7912 | case DT_VERNEED0x6ffffffe: | ||||
| 7913 | name = ".gnu.version_r"; | ||||
| 7914 | goto get_vma; | ||||
| 7915 | case DT_VERSYM0x6ffffff0: | ||||
| 7916 | name = ".gnu.version"; | ||||
| 7917 | get_vma: | ||||
| 7918 | o = bfd_get_section_by_name (abfd, name); | ||||
| 7919 | if (o == NULL((void*)0)) | ||||
| 7920 | { | ||||
| 7921 | (*_bfd_error_handler) | ||||
| 7922 | (_("%s: could not find output section %s")("%s: could not find output section %s"), | ||||
| 7923 | bfd_get_filename (abfd)((char *) (abfd)->filename), name); | ||||
| 7924 | goto error_return; | ||||
| 7925 | } | ||||
| 7926 | dyn.d_un.d_ptr = o->vma; | ||||
| 7927 | break; | ||||
| 7928 | |||||
| 7929 | case DT_REL17: | ||||
| 7930 | case DT_RELA7: | ||||
| 7931 | case DT_RELSZ18: | ||||
| 7932 | case DT_RELASZ8: | ||||
| 7933 | if (dyn.d_tag == DT_REL17 || dyn.d_tag == DT_RELSZ18) | ||||
| 7934 | type = SHT_REL9; | ||||
| 7935 | else | ||||
| 7936 | type = SHT_RELA4; | ||||
| 7937 | dyn.d_un.d_val = 0; | ||||
| 7938 | for (i = 1; i < elf_numsections (abfd)(((abfd) -> tdata.elf_obj_data) -> num_elf_sections); i++) | ||||
| 7939 | { | ||||
| 7940 | Elf_Internal_Shdr *hdr; | ||||
| 7941 | |||||
| 7942 | hdr = elf_elfsections (abfd)(((abfd) -> tdata.elf_obj_data) -> elf_sect_ptr)[i]; | ||||
| 7943 | if (hdr->sh_type == type | ||||
| 7944 | && (hdr->sh_flags & SHF_ALLOC(1 << 1)) != 0) | ||||
| 7945 | { | ||||
| 7946 | if (dyn.d_tag == DT_RELSZ18 || dyn.d_tag == DT_RELASZ8) | ||||
| 7947 | dyn.d_un.d_val += hdr->sh_size; | ||||
| 7948 | else | ||||
| 7949 | { | ||||
| 7950 | if (dyn.d_un.d_val == 0 | ||||
| 7951 | || hdr->sh_addr < dyn.d_un.d_val) | ||||
| 7952 | dyn.d_un.d_val = hdr->sh_addr; | ||||
| 7953 | } | ||||
| 7954 | } | ||||
| 7955 | } | ||||
| 7956 | break; | ||||
| 7957 | } | ||||
| 7958 | bed->s->swap_dyn_out (dynobj, &dyn, dyncon); | ||||
| 7959 | } | ||||
| 7960 | } | ||||
| 7961 | |||||
| 7962 | /* If we have created any dynamic sections, then output them. */ | ||||
| 7963 | if (dynobj != NULL((void*)0)) | ||||
| 7964 | { | ||||
| 7965 | if (! (*bed->elf_backend_finish_dynamic_sections) (abfd, info)) | ||||
| 7966 | goto error_return; | ||||
| 7967 | |||||
| 7968 | for (o = dynobj->sections; o != NULL((void*)0); o = o->next) | ||||
| 7969 | { | ||||
| 7970 | if ((o->flags & SEC_HAS_CONTENTS0x200) == 0 | ||||
| 7971 | || o->_raw_size == 0 | ||||
| 7972 | || o->output_section == bfd_abs_section_ptr((asection *) &bfd_abs_section)) | ||||
| 7973 | continue; | ||||
| 7974 | if ((o->flags & SEC_LINKER_CREATED0x800000) == 0) | ||||
| 7975 | { | ||||
| 7976 | /* At this point, we are only interested in sections | ||||
| 7977 | created by _bfd_elf_link_create_dynamic_sections. */ | ||||
| 7978 | continue; | ||||
| 7979 | } | ||||
| 7980 | if ((elf_section_data (o->output_section)((struct bfd_elf_section_data*)o->output_section->used_by_bfd )->this_hdr.sh_type | ||||
| 7981 | != SHT_STRTAB3) | ||||
| 7982 | || strcmp (bfd_get_section_name (abfd, o)((o)->name + 0), ".dynstr") != 0) | ||||
| 7983 | { | ||||
| 7984 | if (! bfd_set_section_contents (abfd, o->output_section, | ||||
| 7985 | o->contents, | ||||
| 7986 | (file_ptr) o->output_offset, | ||||
| 7987 | o->_raw_size)) | ||||
| 7988 | goto error_return; | ||||
| 7989 | } | ||||
| 7990 | else | ||||
| 7991 | { | ||||
| 7992 | /* The contents of the .dynstr section are actually in a | ||||
| 7993 | stringtab. */ | ||||
| 7994 | off = elf_section_data (o->output_section)((struct bfd_elf_section_data*)o->output_section->used_by_bfd )->this_hdr.sh_offset; | ||||
| 7995 | if (bfd_seek (abfd, off, SEEK_SET0) != 0 | ||||
| 7996 | || ! _bfd_elf_strtab_emit (abfd, | ||||
| 7997 | elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynstr)) | ||||
| 7998 | goto error_return; | ||||
| 7999 | } | ||||
| 8000 | } | ||||
| 8001 | } | ||||
| 8002 | |||||
| 8003 | if (info->relocatable) | ||||
| 8004 | { | ||||
| 8005 | bfd_boolean failed = FALSE0; | ||||
| 8006 | |||||
| 8007 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); | ||||
| 8008 | if (failed) | ||||
| 8009 | goto error_return; | ||||
| 8010 | } | ||||
| 8011 | |||||
| 8012 | /* If we have optimized stabs strings, output them. */ | ||||
| 8013 | if (elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->stab_info != NULL((void*)0)) | ||||
| 8014 | { | ||||
| 8015 | if (! _bfd_write_stab_strings (abfd, &elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->stab_info)) | ||||
| 8016 | goto error_return; | ||||
| 8017 | } | ||||
| 8018 | |||||
| 8019 | if (info->eh_frame_hdr) | ||||
| 8020 | { | ||||
| 8021 | if (! _bfd_elf_write_section_eh_frame_hdr (abfd, info)) | ||||
| 8022 | goto error_return; | ||||
| 8023 | } | ||||
| 8024 | |||||
| 8025 | if (finfo.symstrtab != NULL((void*)0)) | ||||
| 8026 | _bfd_stringtab_free (finfo.symstrtab); | ||||
| 8027 | if (finfo.contents != NULL((void*)0)) | ||||
| 8028 | free (finfo.contents); | ||||
| 8029 | if (finfo.external_relocs != NULL((void*)0)) | ||||
| 8030 | free (finfo.external_relocs); | ||||
| 8031 | if (finfo.internal_relocs != NULL((void*)0)) | ||||
| 8032 | free (finfo.internal_relocs); | ||||
| 8033 | if (finfo.external_syms != NULL((void*)0)) | ||||
| 8034 | free (finfo.external_syms); | ||||
| 8035 | if (finfo.locsym_shndx != NULL((void*)0)) | ||||
| 8036 | free (finfo.locsym_shndx); | ||||
| 8037 | if (finfo.internal_syms != NULL((void*)0)) | ||||
| 8038 | free (finfo.internal_syms); | ||||
| 8039 | if (finfo.indices != NULL((void*)0)) | ||||
| 8040 | free (finfo.indices); | ||||
| 8041 | if (finfo.sections != NULL((void*)0)) | ||||
| 8042 | free (finfo.sections); | ||||
| 8043 | if (finfo.symbuf != NULL((void*)0)) | ||||
| 8044 | free (finfo.symbuf); | ||||
| 8045 | if (finfo.symshndxbuf != NULL((void*)0)) | ||||
| 8046 | free (finfo.symshndxbuf); | ||||
| 8047 | for (o = abfd->sections; o != NULL((void*)0); o = o->next) | ||||
| 8048 | { | ||||
| 8049 | if ((o->flags & SEC_RELOC0x004) != 0 | ||||
| 8050 | && elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hashes != NULL((void*)0)) | ||||
| 8051 | free (elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hashes); | ||||
| 8052 | } | ||||
| 8053 | |||||
| 8054 | elf_tdata (abfd)((abfd) -> tdata.elf_obj_data)->linker = TRUE1; | ||||
| 8055 | |||||
| 8056 | return TRUE1; | ||||
| 8057 | |||||
| 8058 | error_return: | ||||
| 8059 | if (finfo.symstrtab != NULL((void*)0)) | ||||
| 8060 | _bfd_stringtab_free (finfo.symstrtab); | ||||
| 8061 | if (finfo.contents != NULL((void*)0)) | ||||
| 8062 | free (finfo.contents); | ||||
| 8063 | if (finfo.external_relocs != NULL((void*)0)) | ||||
| 8064 | free (finfo.external_relocs); | ||||
| 8065 | if (finfo.internal_relocs != NULL((void*)0)) | ||||
| 8066 | free (finfo.internal_relocs); | ||||
| 8067 | if (finfo.external_syms != NULL((void*)0)) | ||||
| 8068 | free (finfo.external_syms); | ||||
| 8069 | if (finfo.locsym_shndx != NULL((void*)0)) | ||||
| 8070 | free (finfo.locsym_shndx); | ||||
| 8071 | if (finfo.internal_syms != NULL((void*)0)) | ||||
| 8072 | free (finfo.internal_syms); | ||||
| 8073 | if (finfo.indices != NULL((void*)0)) | ||||
| 8074 | free (finfo.indices); | ||||
| 8075 | if (finfo.sections != NULL((void*)0)) | ||||
| 8076 | free (finfo.sections); | ||||
| 8077 | if (finfo.symbuf != NULL((void*)0)) | ||||
| 8078 | free (finfo.symbuf); | ||||
| 8079 | if (finfo.symshndxbuf != NULL((void*)0)) | ||||
| 8080 | free (finfo.symshndxbuf); | ||||
| 8081 | for (o = abfd->sections; o != NULL((void*)0); o = o->next) | ||||
| 8082 | { | ||||
| 8083 | if ((o->flags & SEC_RELOC0x004) != 0 | ||||
| 8084 | && elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hashes != NULL((void*)0)) | ||||
| 8085 | free (elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->rel_hashes); | ||||
| 8086 | } | ||||
| 8087 | |||||
| 8088 | return FALSE0; | ||||
| 8089 | } | ||||
| 8090 | |||||
| 8091 | /* Garbage collect unused sections. */ | ||||
| 8092 | |||||
| 8093 | /* The mark phase of garbage collection. For a given section, mark | ||||
| 8094 | it and any sections in this section's group, and all the sections | ||||
| 8095 | which define symbols to which it refers. */ | ||||
| 8096 | |||||
| 8097 | typedef asection * (*gc_mark_hook_fn) | ||||
| 8098 | (asection *, struct bfd_link_info *, Elf_Internal_Rela *, | ||||
| 8099 | struct elf_link_hash_entry *, Elf_Internal_Sym *); | ||||
| 8100 | |||||
| 8101 | static bfd_boolean | ||||
| 8102 | elf_gc_mark (struct bfd_link_info *info, | ||||
| 8103 | asection *sec, | ||||
| 8104 | gc_mark_hook_fn gc_mark_hook) | ||||
| 8105 | { | ||||
| 8106 | bfd_boolean ret; | ||||
| 8107 | asection *group_sec; | ||||
| 8108 | |||||
| 8109 | sec->gc_mark = 1; | ||||
| 8110 | |||||
| 8111 | /* Mark all the sections in the group. */ | ||||
| 8112 | group_sec = elf_section_data (sec)((struct bfd_elf_section_data*)sec->used_by_bfd)->next_in_group; | ||||
| 8113 | if (group_sec && !group_sec->gc_mark) | ||||
| 8114 | if (!elf_gc_mark (info, group_sec, gc_mark_hook)) | ||||
| 8115 | return FALSE0; | ||||
| 8116 | |||||
| 8117 | /* Look through the section relocs. */ | ||||
| 8118 | ret = TRUE1; | ||||
| 8119 | if ((sec->flags & SEC_RELOC0x004) != 0 && sec->reloc_count > 0) | ||||
| 8120 | { | ||||
| 8121 | Elf_Internal_Rela *relstart, *rel, *relend; | ||||
| 8122 | Elf_Internal_Shdr *symtab_hdr; | ||||
| 8123 | struct elf_link_hash_entry **sym_hashes; | ||||
| 8124 | size_t nlocsyms; | ||||
| 8125 | size_t extsymoff; | ||||
| 8126 | bfd *input_bfd = sec->owner; | ||||
| 8127 | const struct elf_backend_data *bed = get_elf_backend_data (input_bfd)((const struct elf_backend_data *) (input_bfd)->xvec->backend_data ); | ||||
| 8128 | Elf_Internal_Sym *isym = NULL((void*)0); | ||||
| 8129 | int r_sym_shift; | ||||
| 8130 | |||||
| 8131 | symtab_hdr = &elf_tdata (input_bfd)((input_bfd) -> tdata.elf_obj_data)->symtab_hdr; | ||||
| 8132 | sym_hashes = elf_sym_hashes (input_bfd)(((input_bfd) -> tdata.elf_obj_data) -> sym_hashes); | ||||
| 8133 | |||||
| 8134 | /* Read the local symbols. */ | ||||
| 8135 | if (elf_bad_symtab (input_bfd)(((input_bfd) -> tdata.elf_obj_data) -> bad_symtab)) | ||||
| 8136 | { | ||||
| 8137 | nlocsyms = symtab_hdr->sh_size / bed->s->sizeof_sym; | ||||
| 8138 | extsymoff = 0; | ||||
| 8139 | } | ||||
| 8140 | else | ||||
| 8141 | extsymoff = nlocsyms = symtab_hdr->sh_info; | ||||
| 8142 | |||||
| 8143 | isym = (Elf_Internal_Sym *) symtab_hdr->contents; | ||||
| 8144 | if (isym == NULL((void*)0) && nlocsyms != 0) | ||||
| 8145 | { | ||||
| 8146 | isym = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, nlocsyms, 0, | ||||
| 8147 | NULL((void*)0), NULL((void*)0), NULL((void*)0)); | ||||
| 8148 | if (isym == NULL((void*)0)) | ||||
| 8149 | return FALSE0; | ||||
| 8150 | } | ||||
| 8151 | |||||
| 8152 | /* Read the relocations. */ | ||||
| 8153 | relstart = _bfd_elf_link_read_relocs (input_bfd, sec, NULL((void*)0), NULL((void*)0), | ||||
| 8154 | info->keep_memory); | ||||
| 8155 | if (relstart == NULL((void*)0)) | ||||
| 8156 | { | ||||
| 8157 | ret = FALSE0; | ||||
| 8158 | goto out1; | ||||
| 8159 | } | ||||
| 8160 | relend = relstart + sec->reloc_count * bed->s->int_rels_per_ext_rel; | ||||
| 8161 | |||||
| 8162 | if (bed->s->arch_size == 32) | ||||
| 8163 | r_sym_shift = 8; | ||||
| 8164 | else | ||||
| 8165 | r_sym_shift = 32; | ||||
| 8166 | |||||
| 8167 | for (rel = relstart; rel < relend; rel++) | ||||
| 8168 | { | ||||
| 8169 | unsigned long r_symndx; | ||||
| 8170 | asection *rsec; | ||||
| 8171 | struct elf_link_hash_entry *h; | ||||
| 8172 | |||||
| 8173 | r_symndx = rel->r_info >> r_sym_shift; | ||||
| 8174 | if (r_symndx == 0) | ||||
| 8175 | continue; | ||||
| 8176 | |||||
| 8177 | if (r_symndx >= nlocsyms | ||||
| 8178 | || ELF_ST_BIND (isym[r_symndx].st_info)(((unsigned int)(isym[r_symndx].st_info)) >> 4) != STB_LOCAL0) | ||||
| 8179 | { | ||||
| 8180 | h = sym_hashes[r_symndx - extsymoff]; | ||||
| 8181 | rsec = (*gc_mark_hook) (sec, info, rel, h, NULL((void*)0)); | ||||
| 8182 | } | ||||
| 8183 | else | ||||
| 8184 | { | ||||
| 8185 | rsec = (*gc_mark_hook) (sec, info, rel, NULL((void*)0), &isym[r_symndx]); | ||||
| 8186 | } | ||||
| 8187 | |||||
| 8188 | if (rsec && !rsec->gc_mark) | ||||
| 8189 | { | ||||
| 8190 | if (bfd_get_flavour (rsec->owner)((rsec->owner)->xvec->flavour) != bfd_target_elf_flavour) | ||||
| 8191 | rsec->gc_mark = 1; | ||||
| 8192 | else if (!elf_gc_mark (info, rsec, gc_mark_hook)) | ||||
| 8193 | { | ||||
| 8194 | ret = FALSE0; | ||||
| 8195 | goto out2; | ||||
| 8196 | } | ||||
| 8197 | } | ||||
| 8198 | } | ||||
| 8199 | |||||
| 8200 | out2: | ||||
| 8201 | if (elf_section_data (sec)((struct bfd_elf_section_data*)sec->used_by_bfd)->relocs != relstart) | ||||
| 8202 | free (relstart); | ||||
| 8203 | out1: | ||||
| 8204 | if (isym != NULL((void*)0) && symtab_hdr->contents != (unsigned char *) isym) | ||||
| 8205 | { | ||||
| 8206 | if (! info->keep_memory) | ||||
| 8207 | free (isym); | ||||
| 8208 | else | ||||
| 8209 | symtab_hdr->contents = (unsigned char *) isym; | ||||
| 8210 | } | ||||
| 8211 | } | ||||
| 8212 | |||||
| 8213 | return ret; | ||||
| 8214 | } | ||||
| 8215 | |||||
| 8216 | /* Sweep symbols in swept sections. Called via elf_link_hash_traverse. */ | ||||
| 8217 | |||||
| 8218 | static bfd_boolean | ||||
| 8219 | elf_gc_sweep_symbol (struct elf_link_hash_entry *h, void *idxptr) | ||||
| 8220 | { | ||||
| 8221 | int *idx = idxptr; | ||||
| 8222 | |||||
| 8223 | if (h->root.type == bfd_link_hash_warning) | ||||
| 8224 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | ||||
| 8225 | |||||
| 8226 | if (h->dynindx != -1 | ||||
| 8227 | && ((h->root.type != bfd_link_hash_defined | ||||
| 8228 | && h->root.type != bfd_link_hash_defweak) | ||||
| 8229 | || h->root.u.def.section->gc_mark)) | ||||
| 8230 | h->dynindx = (*idx)++; | ||||
| 8231 | |||||
| 8232 | return TRUE1; | ||||
| 8233 | } | ||||
| 8234 | |||||
| 8235 | /* The sweep phase of garbage collection. Remove all garbage sections. */ | ||||
| 8236 | |||||
| 8237 | typedef bfd_boolean (*gc_sweep_hook_fn) | ||||
| 8238 | (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *); | ||||
| 8239 | |||||
| 8240 | static bfd_boolean | ||||
| 8241 | elf_gc_sweep (struct bfd_link_info *info, gc_sweep_hook_fn gc_sweep_hook) | ||||
| 8242 | { | ||||
| 8243 | bfd *sub; | ||||
| 8244 | |||||
| 8245 | for (sub = info->input_bfds; sub != NULL((void*)0); sub = sub->link_next) | ||||
| 8246 | { | ||||
| 8247 | asection *o; | ||||
| 8248 | |||||
| 8249 | if (bfd_get_flavour (sub)((sub)->xvec->flavour) != bfd_target_elf_flavour) | ||||
| 8250 | continue; | ||||
| 8251 | |||||
| 8252 | for (o = sub->sections; o != NULL((void*)0); o = o->next) | ||||
| 8253 | { | ||||
| 8254 | /* Keep special sections. Keep .debug sections. */ | ||||
| 8255 | if ((o->flags & SEC_LINKER_CREATED0x800000) | ||||
| 8256 | || (o->flags & SEC_DEBUGGING0x10000)) | ||||
| 8257 | o->gc_mark = 1; | ||||
| 8258 | |||||
| 8259 | if (o->gc_mark) | ||||
| 8260 | continue; | ||||
| 8261 | |||||
| 8262 | /* Skip sweeping sections already excluded. */ | ||||
| 8263 | if (o->flags & SEC_EXCLUDE0x40000) | ||||
| 8264 | continue; | ||||
| 8265 | |||||
| 8266 | /* Since this is early in the link process, it is simple | ||||
| 8267 | to remove a section from the output. */ | ||||
| 8268 | o->flags |= SEC_EXCLUDE0x40000; | ||||
| 8269 | |||||
| 8270 | /* But we also have to update some of the relocation | ||||
| 8271 | info we collected before. */ | ||||
| 8272 | if (gc_sweep_hook | ||||
| 8273 | && (o->flags & SEC_RELOC0x004) && o->reloc_count > 0) | ||||
| 8274 | { | ||||
| 8275 | Elf_Internal_Rela *internal_relocs; | ||||
| 8276 | bfd_boolean r; | ||||
| 8277 | |||||
| 8278 | internal_relocs | ||||
| 8279 | = _bfd_elf_link_read_relocs (o->owner, o, NULL((void*)0), NULL((void*)0), | ||||
| 8280 | info->keep_memory); | ||||
| 8281 | if (internal_relocs == NULL((void*)0)) | ||||
| 8282 | return FALSE0; | ||||
| 8283 | |||||
| 8284 | r = (*gc_sweep_hook) (o->owner, info, o, internal_relocs); | ||||
| 8285 | |||||
| 8286 | if (elf_section_data (o)((struct bfd_elf_section_data*)o->used_by_bfd)->relocs != internal_relocs) | ||||
| 8287 | free (internal_relocs); | ||||
| 8288 | |||||
| 8289 | if (!r) | ||||
| 8290 | return FALSE0; | ||||
| 8291 | } | ||||
| 8292 | } | ||||
| 8293 | } | ||||
| 8294 | |||||
| 8295 | /* Remove the symbols that were in the swept sections from the dynamic | ||||
| 8296 | symbol table. GCFIXME: Anyone know how to get them out of the | ||||
| 8297 | static symbol table as well? */ | ||||
| 8298 | { | ||||
| 8299 | int i = 0; | ||||
| 8300 | |||||
| 8301 | elf_link_hash_traverse (elf_hash_table (info), elf_gc_sweep_symbol, &i)(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (elf_gc_sweep_symbol), (&i))); | ||||
| 8302 | |||||
| 8303 | elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynsymcount = i; | ||||
| 8304 | } | ||||
| 8305 | |||||
| 8306 | return TRUE1; | ||||
| 8307 | } | ||||
| 8308 | |||||
| 8309 | /* Propagate collected vtable information. This is called through | ||||
| 8310 | elf_link_hash_traverse. */ | ||||
| 8311 | |||||
| 8312 | static bfd_boolean | ||||
| 8313 | elf_gc_propagate_vtable_entries_used (struct elf_link_hash_entry *h, void *okp) | ||||
| 8314 | { | ||||
| 8315 | if (h->root.type == bfd_link_hash_warning) | ||||
| 8316 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | ||||
| 8317 | |||||
| 8318 | /* Those that are not vtables. */ | ||||
| 8319 | if (h->vtable_parent == NULL((void*)0)) | ||||
| 8320 | return TRUE1; | ||||
| 8321 | |||||
| 8322 | /* Those vtables that do not have parents, we cannot merge. */ | ||||
| 8323 | if (h->vtable_parent == (struct elf_link_hash_entry *) -1) | ||||
| 8324 | return TRUE1; | ||||
| 8325 | |||||
| 8326 | /* If we've already been done, exit. */ | ||||
| 8327 | if (h->vtable_entries_used && h->vtable_entries_used[-1]) | ||||
| 8328 | return TRUE1; | ||||
| 8329 | |||||
| 8330 | /* Make sure the parent's table is up to date. */ | ||||
| 8331 | elf_gc_propagate_vtable_entries_used (h->vtable_parent, okp); | ||||
| 8332 | |||||
| 8333 | if (h->vtable_entries_used == NULL((void*)0)) | ||||
| 8334 | { | ||||
| 8335 | /* None of this table's entries were referenced. Re-use the | ||||
| 8336 | parent's table. */ | ||||
| 8337 | h->vtable_entries_used = h->vtable_parent->vtable_entries_used; | ||||
| 8338 | h->vtable_entries_size = h->vtable_parent->vtable_entries_size; | ||||
| 8339 | } | ||||
| 8340 | else | ||||
| 8341 | { | ||||
| 8342 | size_t n; | ||||
| 8343 | bfd_boolean *cu, *pu; | ||||
| 8344 | |||||
| 8345 | /* Or the parent's entries into ours. */ | ||||
| 8346 | cu = h->vtable_entries_used; | ||||
| 8347 | cu[-1] = TRUE1; | ||||
| 8348 | pu = h->vtable_parent->vtable_entries_used; | ||||
| 8349 | if (pu != NULL((void*)0)) | ||||
| 8350 | { | ||||
| 8351 | const struct elf_backend_data *bed; | ||||
| 8352 | unsigned int log_file_align; | ||||
| 8353 | |||||
| 8354 | bed = get_elf_backend_data (h->root.u.def.section->owner)((const struct elf_backend_data *) (h->root.u.def.section-> owner)->xvec->backend_data); | ||||
| 8355 | log_file_align = bed->s->log_file_align; | ||||
| 8356 | n = h->vtable_parent->vtable_entries_size >> log_file_align; | ||||
| 8357 | while (n--) | ||||
| 8358 | { | ||||
| 8359 | if (*pu) | ||||
| 8360 | *cu = TRUE1; | ||||
| 8361 | pu++; | ||||
| 8362 | cu++; | ||||
| 8363 | } | ||||
| 8364 | } | ||||
| 8365 | } | ||||
| 8366 | |||||
| 8367 | return TRUE1; | ||||
| 8368 | } | ||||
| 8369 | |||||
| 8370 | static bfd_boolean | ||||
| 8371 | elf_gc_smash_unused_vtentry_relocs (struct elf_link_hash_entry *h, void *okp) | ||||
| 8372 | { | ||||
| 8373 | asection *sec; | ||||
| 8374 | bfd_vma hstart, hend; | ||||
| 8375 | Elf_Internal_Rela *relstart, *relend, *rel; | ||||
| 8376 | const struct elf_backend_data *bed; | ||||
| 8377 | unsigned int log_file_align; | ||||
| 8378 | |||||
| 8379 | if (h->root.type == bfd_link_hash_warning) | ||||
| 8380 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | ||||
| 8381 | |||||
| 8382 | /* Take care of both those symbols that do not describe vtables as | ||||
| 8383 | well as those that are not loaded. */ | ||||
| 8384 | if (h->vtable_parent == NULL((void*)0)) | ||||
| 8385 | return TRUE1; | ||||
| 8386 | |||||
| 8387 | BFD_ASSERT (h->root.type == bfd_link_hash_defined{ if (!(h->root.type == bfd_link_hash_defined || h->root .type == bfd_link_hash_defweak)) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,8388); } | ||||
| 8388 | || h->root.type == bfd_link_hash_defweak){ if (!(h->root.type == bfd_link_hash_defined || h->root .type == bfd_link_hash_defweak)) bfd_assert("/usr/src/gnu/usr.bin/binutils/bfd/elflink.c" ,8388); }; | ||||
| 8389 | |||||
| 8390 | sec = h->root.u.def.section; | ||||
| 8391 | hstart = h->root.u.def.value; | ||||
| 8392 | hend = hstart + h->size; | ||||
| 8393 | |||||
| 8394 | relstart = _bfd_elf_link_read_relocs (sec->owner, sec, NULL((void*)0), NULL((void*)0), TRUE1); | ||||
| 8395 | if (!relstart) | ||||
| 8396 | return *(bfd_boolean *) okp = FALSE0; | ||||
| 8397 | bed = get_elf_backend_data (sec->owner)((const struct elf_backend_data *) (sec->owner)->xvec-> backend_data); | ||||
| 8398 | log_file_align = bed->s->log_file_align; | ||||
| 8399 | |||||
| 8400 | relend = relstart + sec->reloc_count * bed->s->int_rels_per_ext_rel; | ||||
| 8401 | |||||
| 8402 | for (rel = relstart; rel < relend; ++rel) | ||||
| 8403 | if (rel->r_offset >= hstart && rel->r_offset < hend) | ||||
| 8404 | { | ||||
| 8405 | /* If the entry is in use, do nothing. */ | ||||
| 8406 | if (h->vtable_entries_used | ||||
| 8407 | && (rel->r_offset - hstart) < h->vtable_entries_size) | ||||
| 8408 | { | ||||
| 8409 | bfd_vma entry = (rel->r_offset - hstart) >> log_file_align; | ||||
| 8410 | if (h->vtable_entries_used[entry]) | ||||
| 8411 | continue; | ||||
| 8412 | } | ||||
| 8413 | /* Otherwise, kill it. */ | ||||
| 8414 | rel->r_offset = rel->r_info = rel->r_addend = 0; | ||||
| 8415 | } | ||||
| 8416 | |||||
| 8417 | return TRUE1; | ||||
| 8418 | } | ||||
| 8419 | |||||
| 8420 | /* Do mark and sweep of unused sections. */ | ||||
| 8421 | |||||
| 8422 | bfd_boolean | ||||
| 8423 | bfd_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) | ||||
| 8424 | { | ||||
| 8425 | bfd_boolean ok = TRUE1; | ||||
| 8426 | bfd *sub; | ||||
| 8427 | asection * (*gc_mark_hook) | ||||
| 8428 | (asection *, struct bfd_link_info *, Elf_Internal_Rela *, | ||||
| 8429 | struct elf_link_hash_entry *h, Elf_Internal_Sym *); | ||||
| 8430 | |||||
| 8431 | if (!get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data )->can_gc_sections | ||||
| 8432 | || info->relocatable | ||||
| 8433 | || info->emitrelocations | ||||
| 8434 | || !is_elf_hash_table (info->hash)(((struct bfd_link_hash_table *) (info->hash))->type == bfd_link_elf_hash_table) | ||||
| 8435 | || elf_hash_table (info)((struct elf_link_hash_table *) ((info)->hash))->dynamic_sections_created) | ||||
| 8436 | { | ||||
| 8437 | (*_bfd_error_handler)(_("Warning: gc-sections option ignored")("Warning: gc-sections option ignored")); | ||||
| 8438 | return TRUE1; | ||||
| 8439 | } | ||||
| 8440 | |||||
| 8441 | /* Apply transitive closure to the vtable entry usage info. */ | ||||
| 8442 | elf_link_hash_traverse (elf_hash_table (info),(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (elf_gc_propagate_vtable_entries_used), (&ok ))) | ||||
| 8443 | elf_gc_propagate_vtable_entries_used,(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (elf_gc_propagate_vtable_entries_used), (&ok ))) | ||||
| 8444 | &ok)(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (elf_gc_propagate_vtable_entries_used), (&ok ))); | ||||
| 8445 | if (!ok) | ||||
| 8446 | return FALSE0; | ||||
| 8447 | |||||
| 8448 | /* Kill the vtable relocations that were not used. */ | ||||
| 8449 | elf_link_hash_traverse (elf_hash_table (info),(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (elf_gc_smash_unused_vtentry_relocs), (&ok)) ) | ||||
| 8450 | elf_gc_smash_unused_vtentry_relocs,(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (elf_gc_smash_unused_vtentry_relocs), (&ok)) ) | ||||
| 8451 | &ok)(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (elf_gc_smash_unused_vtentry_relocs), (&ok)) ); | ||||
| 8452 | if (!ok) | ||||
| 8453 | return FALSE0; | ||||
| 8454 | |||||
| 8455 | /* Grovel through relocs to find out who stays ... */ | ||||
| 8456 | |||||
| 8457 | gc_mark_hook = get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data )->gc_mark_hook; | ||||
| 8458 | for (sub = info->input_bfds; sub != NULL((void*)0); sub = sub->link_next) | ||||
| 8459 | { | ||||
| 8460 | asection *o; | ||||
| 8461 | |||||
| 8462 | if (bfd_get_flavour (sub)((sub)->xvec->flavour) != bfd_target_elf_flavour) | ||||
| 8463 | continue; | ||||
| 8464 | |||||
| 8465 | for (o = sub->sections; o != NULL((void*)0); o = o->next) | ||||
| 8466 | { | ||||
| 8467 | if (o->flags & SEC_KEEP0x1000000) | ||||
| 8468 | if (!elf_gc_mark (info, o, gc_mark_hook)) | ||||
| 8469 | return FALSE0; | ||||
| 8470 | } | ||||
| 8471 | } | ||||
| 8472 | |||||
| 8473 | /* ... and mark SEC_EXCLUDE for those that go. */ | ||||
| 8474 | if (!elf_gc_sweep (info, get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data )->gc_sweep_hook)) | ||||
| 8475 | return FALSE0; | ||||
| 8476 | |||||
| 8477 | return TRUE1; | ||||
| 8478 | } | ||||
| 8479 | |||||
| 8480 | /* Called from check_relocs to record the existence of a VTINHERIT reloc. */ | ||||
| 8481 | |||||
| 8482 | bfd_boolean | ||||
| 8483 | bfd_elf_gc_record_vtinherit (bfd *abfd, | ||||
| 8484 | asection *sec, | ||||
| 8485 | struct elf_link_hash_entry *h, | ||||
| 8486 | bfd_vma offset) | ||||
| 8487 | { | ||||
| 8488 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | ||||
| 8489 | struct elf_link_hash_entry **search, *child; | ||||
| 8490 | bfd_size_type extsymcount; | ||||
| 8491 | const struct elf_backend_data *bed = get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data ); | ||||
| 8492 | |||||
| 8493 | /* The sh_info field of the symtab header tells us where the | ||||
| 8494 | external symbols start. We don't care about the local symbols at | ||||
| 8495 | this point. */ | ||||
| 8496 | extsymcount = elf_tdata (abfd)((abfd) -> tdata.elf_obj_data)->symtab_hdr.sh_size / bed->s->sizeof_sym; | ||||
| 8497 | if (!elf_bad_symtab (abfd)(((abfd) -> tdata.elf_obj_data) -> bad_symtab)) | ||||
| 8498 | extsymcount -= elf_tdata (abfd)((abfd) -> tdata.elf_obj_data)->symtab_hdr.sh_info; | ||||
| 8499 | |||||
| 8500 | sym_hashes = elf_sym_hashes (abfd)(((abfd) -> tdata.elf_obj_data) -> sym_hashes); | ||||
| 8501 | sym_hashes_end = sym_hashes + extsymcount; | ||||
| 8502 | |||||
| 8503 | /* Hunt down the child symbol, which is in this section at the same | ||||
| 8504 | offset as the relocation. */ | ||||
| 8505 | for (search = sym_hashes; search != sym_hashes_end; ++search) | ||||
| 8506 | { | ||||
| 8507 | if ((child = *search) != NULL((void*)0) | ||||
| 8508 | && (child->root.type == bfd_link_hash_defined | ||||
| 8509 | || child->root.type == bfd_link_hash_defweak) | ||||
| 8510 | && child->root.u.def.section == sec | ||||
| 8511 | && child->root.u.def.value == offset) | ||||
| 8512 | goto win; | ||||
| 8513 | } | ||||
| 8514 | |||||
| 8515 | (*_bfd_error_handler) ("%s: %s+%lu: No symbol found for INHERIT", | ||||
| 8516 | bfd_archive_filename (abfd), sec->name, | ||||
| 8517 | (unsigned long) offset); | ||||
| 8518 | bfd_set_error (bfd_error_invalid_operation); | ||||
| 8519 | return FALSE0; | ||||
| 8520 | |||||
| 8521 | win: | ||||
| 8522 | if (!h) | ||||
| 8523 | { | ||||
| 8524 | /* This *should* only be the absolute section. It could potentially | ||||
| 8525 | be that someone has defined a non-global vtable though, which | ||||
| 8526 | would be bad. It isn't worth paging in the local symbols to be | ||||
| 8527 | sure though; that case should simply be handled by the assembler. */ | ||||
| 8528 | |||||
| 8529 | child->vtable_parent = (struct elf_link_hash_entry *) -1; | ||||
| 8530 | } | ||||
| 8531 | else | ||||
| 8532 | child->vtable_parent = h; | ||||
| 8533 | |||||
| 8534 | return TRUE1; | ||||
| 8535 | } | ||||
| 8536 | |||||
| 8537 | /* Called from check_relocs to record the existence of a VTENTRY reloc. */ | ||||
| 8538 | |||||
| 8539 | bfd_boolean | ||||
| 8540 | bfd_elf_gc_record_vtentry (bfd *abfd ATTRIBUTE_UNUSED__attribute__ ((__unused__)), | ||||
| 8541 | asection *sec ATTRIBUTE_UNUSED__attribute__ ((__unused__)), | ||||
| 8542 | struct elf_link_hash_entry *h, | ||||
| 8543 | bfd_vma addend) | ||||
| 8544 | { | ||||
| 8545 | const struct elf_backend_data *bed = get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data ); | ||||
| 8546 | unsigned int log_file_align = bed->s->log_file_align; | ||||
| 8547 | |||||
| 8548 | if (addend >= h->vtable_entries_size) | ||||
| 8549 | { | ||||
| 8550 | size_t size, bytes, file_align; | ||||
| 8551 | bfd_boolean *ptr = h->vtable_entries_used; | ||||
| 8552 | |||||
| 8553 | /* While the symbol is undefined, we have to be prepared to handle | ||||
| 8554 | a zero size. */ | ||||
| 8555 | file_align = 1 << log_file_align; | ||||
| 8556 | if (h->root.type == bfd_link_hash_undefined) | ||||
| 8557 | size = addend + file_align; | ||||
| 8558 | else | ||||
| 8559 | { | ||||
| 8560 | size = h->size; | ||||
| 8561 | if (addend >= size) | ||||
| 8562 | { | ||||
| 8563 | /* Oops! We've got a reference past the defined end of | ||||
| 8564 | the table. This is probably a bug -- shall we warn? */ | ||||
| 8565 | size = addend + file_align; | ||||
| 8566 | } | ||||
| 8567 | } | ||||
| 8568 | size = (size + file_align - 1) & -file_align; | ||||
| 8569 | |||||
| 8570 | /* Allocate one extra entry for use as a "done" flag for the | ||||
| 8571 | consolidation pass. */ | ||||
| 8572 | bytes = ((size >> log_file_align) + 1) * sizeof (bfd_boolean); | ||||
| 8573 | |||||
| 8574 | if (ptr) | ||||
| 8575 | { | ||||
| 8576 | ptr = bfd_realloc (ptr - 1, bytes); | ||||
| 8577 | |||||
| 8578 | if (ptr != NULL((void*)0)) | ||||
| 8579 | { | ||||
| 8580 | size_t oldbytes; | ||||
| 8581 | |||||
| 8582 | oldbytes = (((h->vtable_entries_size >> log_file_align) + 1) | ||||
| 8583 | * sizeof (bfd_boolean)); | ||||
| 8584 | memset (((char *) ptr) + oldbytes, 0, bytes - oldbytes); | ||||
| 8585 | } | ||||
| 8586 | } | ||||
| 8587 | else | ||||
| 8588 | ptr = bfd_zmalloc (bytes); | ||||
| 8589 | |||||
| 8590 | if (ptr == NULL((void*)0)) | ||||
| 8591 | return FALSE0; | ||||
| 8592 | |||||
| 8593 | /* And arrange for that done flag to be at index -1. */ | ||||
| 8594 | h->vtable_entries_used = ptr + 1; | ||||
| 8595 | h->vtable_entries_size = size; | ||||
| 8596 | } | ||||
| 8597 | |||||
| 8598 | h->vtable_entries_used[addend >> log_file_align] = TRUE1; | ||||
| 8599 | |||||
| 8600 | return TRUE1; | ||||
| 8601 | } | ||||
| 8602 | |||||
| 8603 | struct alloc_got_off_arg { | ||||
| 8604 | bfd_vma gotoff; | ||||
| 8605 | unsigned int got_elt_size; | ||||
| 8606 | }; | ||||
| 8607 | |||||
| 8608 | /* We need a special top-level link routine to convert got reference counts | ||||
| 8609 | to real got offsets. */ | ||||
| 8610 | |||||
| 8611 | static bfd_boolean | ||||
| 8612 | elf_gc_allocate_got_offsets (struct elf_link_hash_entry *h, void *arg) | ||||
| 8613 | { | ||||
| 8614 | struct alloc_got_off_arg *gofarg = arg; | ||||
| 8615 | |||||
| 8616 | if (h->root.type == bfd_link_hash_warning) | ||||
| 8617 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | ||||
| 8618 | |||||
| 8619 | if (h->got.refcount > 0) | ||||
| 8620 | { | ||||
| 8621 | h->got.offset = gofarg->gotoff; | ||||
| 8622 | gofarg->gotoff += gofarg->got_elt_size; | ||||
| 8623 | } | ||||
| 8624 | else | ||||
| 8625 | h->got.offset = (bfd_vma) -1; | ||||
| 8626 | |||||
| 8627 | return TRUE1; | ||||
| 8628 | } | ||||
| 8629 | |||||
| 8630 | /* And an accompanying bit to work out final got entry offsets once | ||||
| 8631 | we're done. Should be called from final_link. */ | ||||
| 8632 | |||||
| 8633 | bfd_boolean | ||||
| 8634 | bfd_elf_gc_common_finalize_got_offsets (bfd *abfd, | ||||
| 8635 | struct bfd_link_info *info) | ||||
| 8636 | { | ||||
| 8637 | bfd *i; | ||||
| 8638 | const struct elf_backend_data *bed = get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data ); | ||||
| 8639 | bfd_vma gotoff; | ||||
| 8640 | unsigned int got_elt_size = bed->s->arch_size / 8; | ||||
| 8641 | struct alloc_got_off_arg gofarg; | ||||
| 8642 | |||||
| 8643 | if (! is_elf_hash_table (info->hash)(((struct bfd_link_hash_table *) (info->hash))->type == bfd_link_elf_hash_table)) | ||||
| 8644 | return FALSE0; | ||||
| 8645 | |||||
| 8646 | /* The GOT offset is relative to the .got section, but the GOT header is | ||||
| 8647 | put into the .got.plt section, if the backend uses it. */ | ||||
| 8648 | if (bed->want_got_plt) | ||||
| 8649 | gotoff = 0; | ||||
| 8650 | else | ||||
| 8651 | gotoff = bed->got_header_size; | ||||
| 8652 | |||||
| 8653 | /* Do the local .got entries first. */ | ||||
| 8654 | for (i = info->input_bfds; i; i = i->link_next) | ||||
| 8655 | { | ||||
| 8656 | bfd_signed_vma *local_got; | ||||
| 8657 | bfd_size_type j, locsymcount; | ||||
| 8658 | Elf_Internal_Shdr *symtab_hdr; | ||||
| 8659 | |||||
| 8660 | if (bfd_get_flavour (i)((i)->xvec->flavour) != bfd_target_elf_flavour) | ||||
| 8661 | continue; | ||||
| 8662 | |||||
| 8663 | local_got = elf_local_got_refcounts (i)(((i) -> tdata.elf_obj_data) -> local_got.refcounts); | ||||
| 8664 | if (!local_got) | ||||
| 8665 | continue; | ||||
| 8666 | |||||
| 8667 | symtab_hdr = &elf_tdata (i)((i) -> tdata.elf_obj_data)->symtab_hdr; | ||||
| 8668 | if (elf_bad_symtab (i)(((i) -> tdata.elf_obj_data) -> bad_symtab)) | ||||
| 8669 | locsymcount = symtab_hdr->sh_size / bed->s->sizeof_sym; | ||||
| 8670 | else | ||||
| 8671 | locsymcount = symtab_hdr->sh_info; | ||||
| 8672 | |||||
| 8673 | for (j = 0; j < locsymcount; ++j) | ||||
| 8674 | { | ||||
| 8675 | if (local_got[j] > 0) | ||||
| 8676 | { | ||||
| 8677 | local_got[j] = gotoff; | ||||
| 8678 | gotoff += got_elt_size; | ||||
| 8679 | } | ||||
| 8680 | else | ||||
| 8681 | local_got[j] = (bfd_vma) -1; | ||||
| 8682 | } | ||||
| 8683 | } | ||||
| 8684 | |||||
| 8685 | /* Then the global .got entries. .plt refcounts are handled by | ||||
| 8686 | adjust_dynamic_symbol */ | ||||
| 8687 | gofarg.gotoff = gotoff; | ||||
| 8688 | gofarg.got_elt_size = got_elt_size; | ||||
| 8689 | elf_link_hash_traverse (elf_hash_table (info),(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (elf_gc_allocate_got_offsets), (&gofarg))) | ||||
| 8690 | elf_gc_allocate_got_offsets,(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (elf_gc_allocate_got_offsets), (&gofarg))) | ||||
| 8691 | &gofarg)(bfd_link_hash_traverse (&(((struct elf_link_hash_table * ) ((info)->hash)))->root, (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (elf_gc_allocate_got_offsets), (&gofarg))); | ||||
| 8692 | return TRUE1; | ||||
| 8693 | } | ||||
| 8694 | |||||
| 8695 | /* Many folk need no more in the way of final link than this, once | ||||
| 8696 | got entry reference counting is enabled. */ | ||||
| 8697 | |||||
| 8698 | bfd_boolean | ||||
| 8699 | bfd_elf_gc_common_final_link (bfd *abfd, struct bfd_link_info *info) | ||||
| 8700 | { | ||||
| 8701 | if (!bfd_elf_gc_common_finalize_got_offsets (abfd, info)) | ||||
| 8702 | return FALSE0; | ||||
| 8703 | |||||
| 8704 | /* Invoke the regular ELF backend linker to do all the work. */ | ||||
| 8705 | return bfd_elf_final_link (abfd, info); | ||||
| 8706 | } | ||||
| 8707 | |||||
| 8708 | bfd_boolean | ||||
| 8709 | bfd_elf_reloc_symbol_deleted_p (bfd_vma offset, void *cookie) | ||||
| 8710 | { | ||||
| 8711 | struct elf_reloc_cookie *rcookie = cookie; | ||||
| 8712 | |||||
| 8713 | if (rcookie->bad_symtab) | ||||
| 8714 | rcookie->rel = rcookie->rels; | ||||
| 8715 | |||||
| 8716 | for (; rcookie->rel < rcookie->relend; rcookie->rel++) | ||||
| 8717 | { | ||||
| 8718 | unsigned long r_symndx; | ||||
| 8719 | |||||
| 8720 | if (! rcookie->bad_symtab) | ||||
| 8721 | if (rcookie->rel->r_offset > offset) | ||||
| 8722 | return FALSE0; | ||||
| 8723 | if (rcookie->rel->r_offset != offset) | ||||
| 8724 | continue; | ||||
| 8725 | |||||
| 8726 | r_symndx = rcookie->rel->r_info >> rcookie->r_sym_shift; | ||||
| 8727 | if (r_symndx == SHN_UNDEF0) | ||||
| 8728 | return TRUE1; | ||||
| 8729 | |||||
| 8730 | if (r_symndx >= rcookie->locsymcount | ||||
| 8731 | || ELF_ST_BIND (rcookie->locsyms[r_symndx].st_info)(((unsigned int)(rcookie->locsyms[r_symndx].st_info)) >> 4) != STB_LOCAL0) | ||||
| 8732 | { | ||||
| 8733 | struct elf_link_hash_entry *h; | ||||
| 8734 | |||||
| 8735 | h = rcookie->sym_hashes[r_symndx - rcookie->extsymoff]; | ||||
| 8736 | |||||
| 8737 | while (h->root.type == bfd_link_hash_indirect | ||||
| 8738 | || h->root.type == bfd_link_hash_warning) | ||||
| 8739 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | ||||
| 8740 | |||||
| 8741 | if ((h->root.type == bfd_link_hash_defined | ||||
| 8742 | || h->root.type == bfd_link_hash_defweak) | ||||
| 8743 | && elf_discarded_section (h->root.u.def.section)(!((h->root.u.def.section) == ((asection *) &bfd_abs_section )) && (((h->root.u.def.section)->output_section ) == ((asection *) &bfd_abs_section)) && h->root .u.def.section->sec_info_type != 2 && h->root.u .def.section->sec_info_type != 4)) | ||||
| 8744 | return TRUE1; | ||||
| 8745 | else | ||||
| 8746 | return FALSE0; | ||||
| 8747 | } | ||||
| 8748 | else | ||||
| 8749 | { | ||||
| 8750 | /* It's not a relocation against a global symbol, | ||||
| 8751 | but it could be a relocation against a local | ||||
| 8752 | symbol for a discarded section. */ | ||||
| 8753 | asection *isec; | ||||
| 8754 | Elf_Internal_Sym *isym; | ||||
| 8755 | |||||
| 8756 | /* Need to: get the symbol; get the section. */ | ||||
| 8757 | isym = &rcookie->locsyms[r_symndx]; | ||||
| 8758 | if (isym->st_shndx < SHN_LORESERVE0xFF00 || isym->st_shndx > SHN_HIRESERVE0xFFFF) | ||||
| 8759 | { | ||||
| 8760 | isec = bfd_section_from_elf_index (rcookie->abfd, isym->st_shndx); | ||||
| 8761 | if (isec != NULL((void*)0) && elf_discarded_section (isec)(!((isec) == ((asection *) &bfd_abs_section)) && ( ((isec)->output_section) == ((asection *) &bfd_abs_section )) && isec->sec_info_type != 2 && isec-> sec_info_type != 4)) | ||||
| 8762 | return TRUE1; | ||||
| 8763 | } | ||||
| 8764 | } | ||||
| 8765 | return FALSE0; | ||||
| 8766 | } | ||||
| 8767 | return FALSE0; | ||||
| 8768 | } | ||||
| 8769 | |||||
| 8770 | /* Discard unneeded references to discarded sections. | ||||
| 8771 | Returns TRUE if any section's size was changed. */ | ||||
| 8772 | /* This function assumes that the relocations are in sorted order, | ||||
| 8773 | which is true for all known assemblers. */ | ||||
| 8774 | |||||
| 8775 | bfd_boolean | ||||
| 8776 | bfd_elf_discard_info (bfd *output_bfd, struct bfd_link_info *info) | ||||
| 8777 | { | ||||
| 8778 | struct elf_reloc_cookie cookie; | ||||
| 8779 | asection *stab, *eh; | ||||
| 8780 | Elf_Internal_Shdr *symtab_hdr; | ||||
| 8781 | const struct elf_backend_data *bed; | ||||
| 8782 | bfd *abfd; | ||||
| 8783 | unsigned int count; | ||||
| 8784 | bfd_boolean ret = FALSE0; | ||||
| 8785 | |||||
| 8786 | if (info->traditional_format | ||||
| 8787 | || !is_elf_hash_table (info->hash)(((struct bfd_link_hash_table *) (info->hash))->type == bfd_link_elf_hash_table)) | ||||
| 8788 | return FALSE0; | ||||
| 8789 | |||||
| 8790 | for (abfd = info->input_bfds; abfd != NULL((void*)0); abfd = abfd->link_next) | ||||
| 8791 | { | ||||
| 8792 | if (bfd_get_flavour (abfd)((abfd)->xvec->flavour) != bfd_target_elf_flavour) | ||||
| 8793 | continue; | ||||
| 8794 | |||||
| 8795 | bed = get_elf_backend_data (abfd)((const struct elf_backend_data *) (abfd)->xvec->backend_data ); | ||||
| 8796 | |||||
| 8797 | if ((abfd->flags & DYNAMIC0x40) != 0) | ||||
| 8798 | continue; | ||||
| 8799 | |||||
| 8800 | eh = bfd_get_section_by_name (abfd, ".eh_frame"); | ||||
| 8801 | if (info->relocatable | ||||
| 8802 | || (eh != NULL((void*)0) | ||||
| 8803 | && (eh->_raw_size == 0 | ||||
| 8804 | || bfd_is_abs_section (eh->output_section)((eh->output_section) == ((asection *) &bfd_abs_section ))))) | ||||
| 8805 | eh = NULL((void*)0); | ||||
| 8806 | |||||
| 8807 | stab = bfd_get_section_by_name (abfd, ".stab"); | ||||
| 8808 | if (stab != NULL((void*)0) | ||||
| 8809 | && (stab->_raw_size == 0 | ||||
| 8810 | || bfd_is_abs_section (stab->output_section)((stab->output_section) == ((asection *) &bfd_abs_section )) | ||||
| 8811 | || stab->sec_info_type != ELF_INFO_TYPE_STABS1)) | ||||
| 8812 | stab = NULL((void*)0); | ||||
| 8813 | |||||
| 8814 | if (stab == NULL((void*)0) | ||||
| 8815 | && eh == NULL((void*)0) | ||||
| 8816 | && bed->elf_backend_discard_info == NULL((void*)0)) | ||||
| 8817 | continue; | ||||
| 8818 | |||||
| 8819 | symtab_hdr = &elf_tdata (abfd)((abfd) -> tdata.elf_obj_data)->symtab_hdr; | ||||
| 8820 | cookie.abfd = abfd; | ||||
| 8821 | cookie.sym_hashes = elf_sym_hashes (abfd)(((abfd) -> tdata.elf_obj_data) -> sym_hashes); | ||||
| 8822 | cookie.bad_symtab = elf_bad_symtab (abfd)(((abfd) -> tdata.elf_obj_data) -> bad_symtab); | ||||
| 8823 | if (cookie.bad_symtab) | ||||
| 8824 | { | ||||
| 8825 | cookie.locsymcount = symtab_hdr->sh_size / bed->s->sizeof_sym; | ||||
| 8826 | cookie.extsymoff = 0; | ||||
| 8827 | } | ||||
| 8828 | else | ||||
| 8829 | { | ||||
| 8830 | cookie.locsymcount = symtab_hdr->sh_info; | ||||
| 8831 | cookie.extsymoff = symtab_hdr->sh_info; | ||||
| 8832 | } | ||||
| 8833 | |||||
| 8834 | if (bed->s->arch_size == 32) | ||||
| 8835 | cookie.r_sym_shift = 8; | ||||
| 8836 | else | ||||
| 8837 | cookie.r_sym_shift = 32; | ||||
| 8838 | |||||
| 8839 | cookie.locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | ||||
| 8840 | if (cookie.locsyms == NULL((void*)0) && cookie.locsymcount != 0) | ||||
| 8841 | { | ||||
| 8842 | cookie.locsyms = bfd_elf_get_elf_syms (abfd, symtab_hdr, | ||||
| 8843 | cookie.locsymcount, 0, | ||||
| 8844 | NULL((void*)0), NULL((void*)0), NULL((void*)0)); | ||||
| 8845 | if (cookie.locsyms == NULL((void*)0)) | ||||
| 8846 | return FALSE0; | ||||
| 8847 | } | ||||
| 8848 | |||||
| 8849 | if (stab != NULL((void*)0)) | ||||
| 8850 | { | ||||
| 8851 | cookie.rels = NULL((void*)0); | ||||
| 8852 | count = stab->reloc_count; | ||||
| 8853 | if (count != 0) | ||||
| 8854 | cookie.rels = _bfd_elf_link_read_relocs (abfd, stab, NULL((void*)0), NULL((void*)0), | ||||
| 8855 | info->keep_memory); | ||||
| 8856 | if (cookie.rels != NULL((void*)0)) | ||||
| 8857 | { | ||||
| 8858 | cookie.rel = cookie.rels; | ||||
| 8859 | cookie.relend = cookie.rels; | ||||
| 8860 | cookie.relend += count * bed->s->int_rels_per_ext_rel; | ||||
| 8861 | if (_bfd_discard_section_stabs (abfd, stab, | ||||
| 8862 | elf_section_data (stab)((struct bfd_elf_section_data*)stab->used_by_bfd)->sec_info, | ||||
| 8863 | bfd_elf_reloc_symbol_deleted_p, | ||||
| 8864 | &cookie)) | ||||
| 8865 | ret = TRUE1; | ||||
| 8866 | if (elf_section_data (stab)((struct bfd_elf_section_data*)stab->used_by_bfd)->relocs != cookie.rels) | ||||
| 8867 | free (cookie.rels); | ||||
| 8868 | } | ||||
| 8869 | } | ||||
| 8870 | |||||
| 8871 | if (eh != NULL((void*)0)) | ||||
| 8872 | { | ||||
| 8873 | cookie.rels = NULL((void*)0); | ||||
| 8874 | count = eh->reloc_count; | ||||
| 8875 | if (count != 0) | ||||
| 8876 | cookie.rels = _bfd_elf_link_read_relocs (abfd, eh, NULL((void*)0), NULL((void*)0), | ||||
| 8877 | info->keep_memory); | ||||
| 8878 | cookie.rel = cookie.rels; | ||||
| 8879 | cookie.relend = cookie.rels; | ||||
| 8880 | if (cookie.rels != NULL((void*)0)) | ||||
| 8881 | cookie.relend += count * bed->s->int_rels_per_ext_rel; | ||||
| 8882 | |||||
| 8883 | if (_bfd_elf_discard_section_eh_frame (abfd, info, eh, | ||||
| 8884 | bfd_elf_reloc_symbol_deleted_p, | ||||
| 8885 | &cookie)) | ||||
| 8886 | ret = TRUE1; | ||||
| 8887 | |||||
| 8888 | if (cookie.rels != NULL((void*)0) | ||||
| 8889 | && elf_section_data (eh)((struct bfd_elf_section_data*)eh->used_by_bfd)->relocs != cookie.rels) | ||||
| 8890 | free (cookie.rels); | ||||
| 8891 | } | ||||
| 8892 | |||||
| 8893 | if (bed->elf_backend_discard_info != NULL((void*)0) | ||||
| 8894 | && (*bed->elf_backend_discard_info) (abfd, &cookie, info)) | ||||
| 8895 | ret = TRUE1; | ||||
| 8896 | |||||
| 8897 | if (cookie.locsyms != NULL((void*)0) | ||||
| 8898 | && symtab_hdr->contents != (unsigned char *) cookie.locsyms) | ||||
| 8899 | { | ||||
| 8900 | if (! info->keep_memory) | ||||
| 8901 | free (cookie.locsyms); | ||||
| 8902 | else | ||||
| 8903 | symtab_hdr->contents = (unsigned char *) cookie.locsyms; | ||||
| 8904 | } | ||||
| 8905 | } | ||||
| 8906 | |||||
| 8907 | if (info->eh_frame_hdr | ||||
| 8908 | && !info->relocatable | ||||
| 8909 | && _bfd_elf_discard_section_eh_frame_hdr (output_bfd, info)) | ||||
| 8910 | ret = TRUE1; | ||||
| 8911 | |||||
| 8912 | return ret; | ||||
| 8913 | } |