| 1 | /* BFD backend for SunOS binaries. |
| 2 | Copyright 1990, 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
| 3 | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
| 4 | Free Software Foundation, Inc. |
| 5 | Written by Cygnus Support. |
| 6 | |
| 7 | This file is part of BFD, the Binary File Descriptor library. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 3 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program; if not, write to the Free Software |
| 21 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 22 | MA 02110-1301, USA. */ |
| 23 | |
| 24 | #define TARGETNAME "a.out-sunos-big" |
| 25 | |
| 26 | /* Do not "beautify" the CONCAT* macro args. Traditional C will not |
| 27 | remove whitespace added here, and thus will fail to concatenate |
| 28 | the tokens. */ |
| 29 | #define MY(OP) CONCAT2 (sunos_big_,OP) |
| 30 | |
| 31 | #include "bfd.h" |
| 32 | #include "bfdlink.h" |
| 33 | #include "libaout.h" |
| 34 | |
| 35 | /* ??? Where should this go? */ |
| 36 | #define MACHTYPE_OK(mtype) \ |
| 37 | (((mtype) == M_SPARC && bfd_lookup_arch (bfd_arch_sparc, 0) != NULL) \ |
| 38 | || ((mtype) == M_SPARCLET \ |
| 39 | && bfd_lookup_arch (bfd_arch_sparc, bfd_mach_sparc_sparclet) != NULL) \ |
| 40 | || ((mtype) == M_SPARCLITE_LE \ |
| 41 | && bfd_lookup_arch (bfd_arch_sparc, bfd_mach_sparc_sparclet) != NULL) \ |
| 42 | || (((mtype) == M_UNKNOWN || (mtype) == M_68010 || (mtype) == M_68020) \ |
| 43 | && bfd_lookup_arch (bfd_arch_m68k, 0) != NULL)) |
| 44 | |
| 45 | #define MY_get_dynamic_symtab_upper_bound sunos_get_dynamic_symtab_upper_bound |
| 46 | #define MY_canonicalize_dynamic_symtab sunos_canonicalize_dynamic_symtab |
| 47 | #define MY_get_synthetic_symtab _bfd_nodynamic_get_synthetic_symtab |
| 48 | #define MY_get_dynamic_reloc_upper_bound sunos_get_dynamic_reloc_upper_bound |
| 49 | #define MY_canonicalize_dynamic_reloc sunos_canonicalize_dynamic_reloc |
| 50 | #define MY_bfd_link_hash_table_create sunos_link_hash_table_create |
| 51 | #define MY_add_dynamic_symbols sunos_add_dynamic_symbols |
| 52 | #define MY_add_one_symbol sunos_add_one_symbol |
| 53 | #define MY_link_dynamic_object sunos_link_dynamic_object |
| 54 | #define MY_write_dynamic_symbol sunos_write_dynamic_symbol |
| 55 | #define MY_check_dynamic_reloc sunos_check_dynamic_reloc |
| 56 | #define MY_finish_dynamic_link sunos_finish_dynamic_link |
| 57 | |
| 58 | static bfd_boolean sunos_add_dynamic_symbols (bfd *, struct bfd_link_info *, struct external_nlist **, bfd_size_type *, char **); |
| 59 | static bfd_boolean sunos_add_one_symbol (struct bfd_link_info *, bfd *, const char *, flagword, asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean, struct bfd_link_hash_entry **); |
| 60 | static bfd_boolean sunos_link_dynamic_object (struct bfd_link_info *, bfd *); |
| 61 | static bfd_boolean sunos_write_dynamic_symbol (bfd *, struct bfd_link_info *, struct aout_link_hash_entry *); |
| 62 | static bfd_boolean sunos_check_dynamic_reloc (struct bfd_link_info *, bfd *, asection *, struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *, bfd_vma *); |
| 63 | static bfd_boolean sunos_finish_dynamic_link (bfd *, struct bfd_link_info *); |
| 64 | static struct bfd_link_hash_table *sunos_link_hash_table_create (bfd *); |
| 65 | static long sunos_get_dynamic_symtab_upper_bound (bfd *); |
| 66 | static long sunos_canonicalize_dynamic_symtab (bfd *, asymbol **); |
| 67 | static long sunos_get_dynamic_reloc_upper_bound (bfd *); |
| 68 | static long sunos_canonicalize_dynamic_reloc (bfd *, arelent **, asymbol **); |
| 69 | |
| 70 | /* Include the usual a.out support. */ |
| 71 | #include "aoutf1.h" |
| 72 | |
| 73 | /* The SunOS 4.1.4 /usr/include/locale.h defines valid as a macro. */ |
| 74 | #undef valid |
| 75 | |
| 76 | /* SunOS shared library support. We store a pointer to this structure |
| 77 | in obj_aout_dynamic_info (abfd). */ |
| 78 | |
| 79 | struct sunos_dynamic_info |
| 80 | { |
| 81 | /* Whether we found any dynamic information. */ |
| 82 | bfd_boolean valid; |
| 83 | /* Dynamic information. */ |
| 84 | struct internal_sun4_dynamic_link dyninfo; |
| 85 | /* Number of dynamic symbols. */ |
| 86 | unsigned long dynsym_count; |
| 87 | /* Read in nlists for dynamic symbols. */ |
| 88 | struct external_nlist *dynsym; |
| 89 | /* asymbol structures for dynamic symbols. */ |
| 90 | aout_symbol_type *canonical_dynsym; |
| 91 | /* Read in dynamic string table. */ |
| 92 | char *dynstr; |
| 93 | /* Number of dynamic relocs. */ |
| 94 | unsigned long dynrel_count; |
| 95 | /* Read in dynamic relocs. This may be reloc_std_external or |
| 96 | reloc_ext_external. */ |
| 97 | void * dynrel; |
| 98 | /* arelent structures for dynamic relocs. */ |
| 99 | arelent *canonical_dynrel; |
| 100 | }; |
| 101 | |
| 102 | /* The hash table of dynamic symbols is composed of two word entries. |
| 103 | See include/aout/sun4.h for details. */ |
| 104 | |
| 105 | #define HASH_ENTRY_SIZE (2 * BYTES_IN_WORD) |
| 106 | |
| 107 | /* Read in the basic dynamic information. This locates the __DYNAMIC |
| 108 | structure and uses it to find the dynamic_link structure. It |
| 109 | creates and saves a sunos_dynamic_info structure. If it can't find |
| 110 | __DYNAMIC, it sets the valid field of the sunos_dynamic_info |
| 111 | structure to FALSE to avoid doing this work again. */ |
| 112 | |
| 113 | static bfd_boolean |
| 114 | sunos_read_dynamic_info (bfd *abfd) |
| 115 | { |
| 116 | struct sunos_dynamic_info *info; |
| 117 | asection *dynsec; |
| 118 | bfd_vma dynoff; |
| 119 | struct external_sun4_dynamic dyninfo; |
| 120 | unsigned long dynver; |
| 121 | struct external_sun4_dynamic_link linkinfo; |
| 122 | bfd_size_type amt; |
| 123 | |
| 124 | if (obj_aout_dynamic_info (abfd) != NULL) |
| 125 | return TRUE; |
| 126 | |
| 127 | if ((abfd->flags & DYNAMIC) == 0) |
| 128 | { |
| 129 | bfd_set_error (bfd_error_invalid_operation); |
| 130 | return FALSE; |
| 131 | } |
| 132 | |
| 133 | amt = sizeof (struct sunos_dynamic_info); |
| 134 | info = bfd_zalloc (abfd, amt); |
| 135 | if (!info) |
| 136 | return FALSE; |
| 137 | info->valid = FALSE; |
| 138 | info->dynsym = NULL; |
| 139 | info->dynstr = NULL; |
| 140 | info->canonical_dynsym = NULL; |
| 141 | info->dynrel = NULL; |
| 142 | info->canonical_dynrel = NULL; |
| 143 | obj_aout_dynamic_info (abfd) = (void *) info; |
| 144 | |
| 145 | /* This code used to look for the __DYNAMIC symbol to locate the dynamic |
| 146 | linking information. |
| 147 | However this inhibits recovering the dynamic symbols from a |
| 148 | stripped object file, so blindly assume that the dynamic linking |
| 149 | information is located at the start of the data section. |
| 150 | We could verify this assumption later by looking through the dynamic |
| 151 | symbols for the __DYNAMIC symbol. */ |
| 152 | if ((abfd->flags & DYNAMIC) == 0) |
| 153 | return TRUE; |
| 154 | if (! bfd_get_section_contents (abfd, obj_datasec (abfd), (void *) &dyninfo, |
| 155 | (file_ptr) 0, |
| 156 | (bfd_size_type) sizeof dyninfo)) |
| 157 | return TRUE; |
| 158 | |
| 159 | dynver = GET_WORD (abfd, dyninfo.ld_version); |
| 160 | if (dynver != 2 && dynver != 3) |
| 161 | return TRUE; |
| 162 | |
| 163 | dynoff = GET_WORD (abfd, dyninfo.ld); |
| 164 | |
| 165 | /* dynoff is a virtual address. It is probably always in the .data |
| 166 | section, but this code should work even if it moves. */ |
| 167 | if (dynoff < bfd_get_section_vma (abfd, obj_datasec (abfd))) |
| 168 | dynsec = obj_textsec (abfd); |
| 169 | else |
| 170 | dynsec = obj_datasec (abfd); |
| 171 | dynoff -= bfd_get_section_vma (abfd, dynsec); |
| 172 | if (dynoff > dynsec->size) |
| 173 | return TRUE; |
| 174 | |
| 175 | /* This executable appears to be dynamically linked in a way that we |
| 176 | can understand. */ |
| 177 | if (! bfd_get_section_contents (abfd, dynsec, (void *) &linkinfo, |
| 178 | (file_ptr) dynoff, |
| 179 | (bfd_size_type) sizeof linkinfo)) |
| 180 | return TRUE; |
| 181 | |
| 182 | /* Swap in the dynamic link information. */ |
| 183 | info->dyninfo.ld_loaded = GET_WORD (abfd, linkinfo.ld_loaded); |
| 184 | info->dyninfo.ld_need = GET_WORD (abfd, linkinfo.ld_need); |
| 185 | info->dyninfo.ld_rules = GET_WORD (abfd, linkinfo.ld_rules); |
| 186 | info->dyninfo.ld_got = GET_WORD (abfd, linkinfo.ld_got); |
| 187 | info->dyninfo.ld_plt = GET_WORD (abfd, linkinfo.ld_plt); |
| 188 | info->dyninfo.ld_rel = GET_WORD (abfd, linkinfo.ld_rel); |
| 189 | info->dyninfo.ld_hash = GET_WORD (abfd, linkinfo.ld_hash); |
| 190 | info->dyninfo.ld_stab = GET_WORD (abfd, linkinfo.ld_stab); |
| 191 | info->dyninfo.ld_stab_hash = GET_WORD (abfd, linkinfo.ld_stab_hash); |
| 192 | info->dyninfo.ld_buckets = GET_WORD (abfd, linkinfo.ld_buckets); |
| 193 | info->dyninfo.ld_symbols = GET_WORD (abfd, linkinfo.ld_symbols); |
| 194 | info->dyninfo.ld_symb_size = GET_WORD (abfd, linkinfo.ld_symb_size); |
| 195 | info->dyninfo.ld_text = GET_WORD (abfd, linkinfo.ld_text); |
| 196 | info->dyninfo.ld_plt_sz = GET_WORD (abfd, linkinfo.ld_plt_sz); |
| 197 | |
| 198 | /* Reportedly the addresses need to be offset by the size of the |
| 199 | exec header in an NMAGIC file. */ |
| 200 | if (adata (abfd).magic == n_magic) |
| 201 | { |
| 202 | unsigned long exec_bytes_size = adata (abfd).exec_bytes_size; |
| 203 | |
| 204 | info->dyninfo.ld_need += exec_bytes_size; |
| 205 | info->dyninfo.ld_rules += exec_bytes_size; |
| 206 | info->dyninfo.ld_rel += exec_bytes_size; |
| 207 | info->dyninfo.ld_hash += exec_bytes_size; |
| 208 | info->dyninfo.ld_stab += exec_bytes_size; |
| 209 | info->dyninfo.ld_symbols += exec_bytes_size; |
| 210 | } |
| 211 | |
| 212 | /* The only way to get the size of the symbol information appears to |
| 213 | be to determine the distance between it and the string table. */ |
| 214 | info->dynsym_count = ((info->dyninfo.ld_symbols - info->dyninfo.ld_stab) |
| 215 | / EXTERNAL_NLIST_SIZE); |
| 216 | BFD_ASSERT (info->dynsym_count * EXTERNAL_NLIST_SIZE |
| 217 | == (unsigned long) (info->dyninfo.ld_symbols |
| 218 | - info->dyninfo.ld_stab)); |
| 219 | |
| 220 | /* Similarly, the relocs end at the hash table. */ |
| 221 | info->dynrel_count = ((info->dyninfo.ld_hash - info->dyninfo.ld_rel) |
| 222 | / obj_reloc_entry_size (abfd)); |
| 223 | BFD_ASSERT (info->dynrel_count * obj_reloc_entry_size (abfd) |
| 224 | == (unsigned long) (info->dyninfo.ld_hash |
| 225 | - info->dyninfo.ld_rel)); |
| 226 | |
| 227 | info->valid = TRUE; |
| 228 | |
| 229 | return TRUE; |
| 230 | } |
| 231 | |
| 232 | /* Return the amount of memory required for the dynamic symbols. */ |
| 233 | |
| 234 | static long |
| 235 | sunos_get_dynamic_symtab_upper_bound (bfd *abfd) |
| 236 | { |
| 237 | struct sunos_dynamic_info *info; |
| 238 | |
| 239 | if (! sunos_read_dynamic_info (abfd)) |
| 240 | return -1; |
| 241 | |
| 242 | info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| 243 | if (! info->valid) |
| 244 | { |
| 245 | bfd_set_error (bfd_error_no_symbols); |
| 246 | return -1; |
| 247 | } |
| 248 | |
| 249 | return (info->dynsym_count + 1) * sizeof (asymbol *); |
| 250 | } |
| 251 | |
| 252 | /* Read the external dynamic symbols. */ |
| 253 | |
| 254 | static bfd_boolean |
| 255 | sunos_slurp_dynamic_symtab (bfd *abfd) |
| 256 | { |
| 257 | struct sunos_dynamic_info *info; |
| 258 | bfd_size_type amt; |
| 259 | |
| 260 | /* Get the general dynamic information. */ |
| 261 | if (obj_aout_dynamic_info (abfd) == NULL) |
| 262 | { |
| 263 | if (! sunos_read_dynamic_info (abfd)) |
| 264 | return FALSE; |
| 265 | } |
| 266 | |
| 267 | info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| 268 | if (! info->valid) |
| 269 | { |
| 270 | bfd_set_error (bfd_error_no_symbols); |
| 271 | return FALSE; |
| 272 | } |
| 273 | |
| 274 | /* Get the dynamic nlist structures. */ |
| 275 | if (info->dynsym == NULL) |
| 276 | { |
| 277 | amt = (bfd_size_type) info->dynsym_count * EXTERNAL_NLIST_SIZE; |
| 278 | info->dynsym = bfd_alloc (abfd, amt); |
| 279 | if (info->dynsym == NULL && info->dynsym_count != 0) |
| 280 | return FALSE; |
| 281 | if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_stab, SEEK_SET) != 0 |
| 282 | || bfd_bread ((void *) info->dynsym, amt, abfd) != amt) |
| 283 | { |
| 284 | if (info->dynsym != NULL) |
| 285 | { |
| 286 | bfd_release (abfd, info->dynsym); |
| 287 | info->dynsym = NULL; |
| 288 | } |
| 289 | return FALSE; |
| 290 | } |
| 291 | } |
| 292 | |
| 293 | /* Get the dynamic strings. */ |
| 294 | if (info->dynstr == NULL) |
| 295 | { |
| 296 | amt = info->dyninfo.ld_symb_size; |
| 297 | info->dynstr = bfd_alloc (abfd, amt); |
| 298 | if (info->dynstr == NULL && info->dyninfo.ld_symb_size != 0) |
| 299 | return FALSE; |
| 300 | if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_symbols, SEEK_SET) != 0 |
| 301 | || bfd_bread ((void *) info->dynstr, amt, abfd) != amt) |
| 302 | { |
| 303 | if (info->dynstr != NULL) |
| 304 | { |
| 305 | bfd_release (abfd, info->dynstr); |
| 306 | info->dynstr = NULL; |
| 307 | } |
| 308 | return FALSE; |
| 309 | } |
| 310 | } |
| 311 | |
| 312 | return TRUE; |
| 313 | } |
| 314 | |
| 315 | /* Read in the dynamic symbols. */ |
| 316 | |
| 317 | static long |
| 318 | sunos_canonicalize_dynamic_symtab (bfd *abfd, asymbol **storage) |
| 319 | { |
| 320 | struct sunos_dynamic_info *info; |
| 321 | unsigned long i; |
| 322 | |
| 323 | if (! sunos_slurp_dynamic_symtab (abfd)) |
| 324 | return -1; |
| 325 | |
| 326 | info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| 327 | |
| 328 | #ifdef CHECK_DYNAMIC_HASH |
| 329 | /* Check my understanding of the dynamic hash table by making sure |
| 330 | that each symbol can be located in the hash table. */ |
| 331 | { |
| 332 | bfd_size_type table_size; |
| 333 | bfd_byte *table; |
| 334 | bfd_size_type i; |
| 335 | |
| 336 | if (info->dyninfo.ld_buckets > info->dynsym_count) |
| 337 | abort (); |
| 338 | table_size = info->dyninfo.ld_stab - info->dyninfo.ld_hash; |
| 339 | table = bfd_malloc (table_size); |
| 340 | if (table == NULL && table_size != 0) |
| 341 | abort (); |
| 342 | if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_hash, SEEK_SET) != 0 |
| 343 | || bfd_bread ((void *) table, table_size, abfd) != table_size) |
| 344 | abort (); |
| 345 | for (i = 0; i < info->dynsym_count; i++) |
| 346 | { |
| 347 | unsigned char *name; |
| 348 | unsigned long hash; |
| 349 | |
| 350 | name = ((unsigned char *) info->dynstr |
| 351 | + GET_WORD (abfd, info->dynsym[i].e_strx)); |
| 352 | hash = 0; |
| 353 | while (*name != '\0') |
| 354 | hash = (hash << 1) + *name++; |
| 355 | hash &= 0x7fffffff; |
| 356 | hash %= info->dyninfo.ld_buckets; |
| 357 | while (GET_WORD (abfd, table + hash * HASH_ENTRY_SIZE) != i) |
| 358 | { |
| 359 | hash = GET_WORD (abfd, |
| 360 | table + hash * HASH_ENTRY_SIZE + BYTES_IN_WORD); |
| 361 | if (hash == 0 || hash >= table_size / HASH_ENTRY_SIZE) |
| 362 | abort (); |
| 363 | } |
| 364 | } |
| 365 | free (table); |
| 366 | } |
| 367 | #endif /* CHECK_DYNAMIC_HASH */ |
| 368 | |
| 369 | /* Get the asymbol structures corresponding to the dynamic nlist |
| 370 | structures. */ |
| 371 | if (info->canonical_dynsym == NULL) |
| 372 | { |
| 373 | bfd_size_type size; |
| 374 | bfd_size_type strsize = info->dyninfo.ld_symb_size; |
| 375 | |
| 376 | size = (bfd_size_type) info->dynsym_count * sizeof (aout_symbol_type); |
| 377 | info->canonical_dynsym = bfd_alloc (abfd, size); |
| 378 | if (info->canonical_dynsym == NULL && info->dynsym_count != 0) |
| 379 | return -1; |
| 380 | |
| 381 | if (! aout_32_translate_symbol_table (abfd, info->canonical_dynsym, |
| 382 | info->dynsym, |
| 383 | (bfd_size_type) info->dynsym_count, |
| 384 | info->dynstr, strsize, TRUE)) |
| 385 | { |
| 386 | if (info->canonical_dynsym != NULL) |
| 387 | { |
| 388 | bfd_release (abfd, info->canonical_dynsym); |
| 389 | info->canonical_dynsym = NULL; |
| 390 | } |
| 391 | return -1; |
| 392 | } |
| 393 | } |
| 394 | |
| 395 | /* Return pointers to the dynamic asymbol structures. */ |
| 396 | for (i = 0; i < info->dynsym_count; i++) |
| 397 | *storage++ = (asymbol *) (info->canonical_dynsym + i); |
| 398 | *storage = NULL; |
| 399 | |
| 400 | return info->dynsym_count; |
| 401 | } |
| 402 | |
| 403 | /* Return the amount of memory required for the dynamic relocs. */ |
| 404 | |
| 405 | static long |
| 406 | sunos_get_dynamic_reloc_upper_bound (bfd *abfd) |
| 407 | { |
| 408 | struct sunos_dynamic_info *info; |
| 409 | |
| 410 | if (! sunos_read_dynamic_info (abfd)) |
| 411 | return -1; |
| 412 | |
| 413 | info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| 414 | if (! info->valid) |
| 415 | { |
| 416 | bfd_set_error (bfd_error_no_symbols); |
| 417 | return -1; |
| 418 | } |
| 419 | |
| 420 | return (info->dynrel_count + 1) * sizeof (arelent *); |
| 421 | } |
| 422 | |
| 423 | /* Read in the dynamic relocs. */ |
| 424 | |
| 425 | static long |
| 426 | sunos_canonicalize_dynamic_reloc (bfd *abfd, arelent **storage, asymbol **syms) |
| 427 | { |
| 428 | struct sunos_dynamic_info *info; |
| 429 | unsigned long i; |
| 430 | bfd_size_type size; |
| 431 | |
| 432 | /* Get the general dynamic information. */ |
| 433 | if (obj_aout_dynamic_info (abfd) == NULL) |
| 434 | { |
| 435 | if (! sunos_read_dynamic_info (abfd)) |
| 436 | return -1; |
| 437 | } |
| 438 | |
| 439 | info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| 440 | if (! info->valid) |
| 441 | { |
| 442 | bfd_set_error (bfd_error_no_symbols); |
| 443 | return -1; |
| 444 | } |
| 445 | |
| 446 | /* Get the dynamic reloc information. */ |
| 447 | if (info->dynrel == NULL) |
| 448 | { |
| 449 | size = (bfd_size_type) info->dynrel_count * obj_reloc_entry_size (abfd); |
| 450 | info->dynrel = bfd_alloc (abfd, size); |
| 451 | if (info->dynrel == NULL && size != 0) |
| 452 | return -1; |
| 453 | if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_rel, SEEK_SET) != 0 |
| 454 | || bfd_bread ((void *) info->dynrel, size, abfd) != size) |
| 455 | { |
| 456 | if (info->dynrel != NULL) |
| 457 | { |
| 458 | bfd_release (abfd, info->dynrel); |
| 459 | info->dynrel = NULL; |
| 460 | } |
| 461 | return -1; |
| 462 | } |
| 463 | } |
| 464 | |
| 465 | /* Get the arelent structures corresponding to the dynamic reloc |
| 466 | information. */ |
| 467 | if (info->canonical_dynrel == NULL) |
| 468 | { |
| 469 | arelent *to; |
| 470 | |
| 471 | size = (bfd_size_type) info->dynrel_count * sizeof (arelent); |
| 472 | info->canonical_dynrel = bfd_alloc (abfd, size); |
| 473 | if (info->canonical_dynrel == NULL && info->dynrel_count != 0) |
| 474 | return -1; |
| 475 | |
| 476 | to = info->canonical_dynrel; |
| 477 | |
| 478 | if (obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE) |
| 479 | { |
| 480 | struct reloc_ext_external *p; |
| 481 | struct reloc_ext_external *pend; |
| 482 | |
| 483 | p = (struct reloc_ext_external *) info->dynrel; |
| 484 | pend = p + info->dynrel_count; |
| 485 | for (; p < pend; p++, to++) |
| 486 | NAME (aout, swap_ext_reloc_in) (abfd, p, to, syms, |
| 487 | (bfd_size_type) info->dynsym_count); |
| 488 | } |
| 489 | else |
| 490 | { |
| 491 | struct reloc_std_external *p; |
| 492 | struct reloc_std_external *pend; |
| 493 | |
| 494 | p = (struct reloc_std_external *) info->dynrel; |
| 495 | pend = p + info->dynrel_count; |
| 496 | for (; p < pend; p++, to++) |
| 497 | NAME (aout, swap_std_reloc_in) (abfd, p, to, syms, |
| 498 | (bfd_size_type) info->dynsym_count); |
| 499 | } |
| 500 | } |
| 501 | |
| 502 | /* Return pointers to the dynamic arelent structures. */ |
| 503 | for (i = 0; i < info->dynrel_count; i++) |
| 504 | *storage++ = info->canonical_dynrel + i; |
| 505 | *storage = NULL; |
| 506 | |
| 507 | return info->dynrel_count; |
| 508 | } |
| 509 | \f |
| 510 | /* Code to handle linking of SunOS shared libraries. */ |
| 511 | |
| 512 | /* A SPARC procedure linkage table entry is 12 bytes. The first entry |
| 513 | in the table is a jump which is filled in by the runtime linker. |
| 514 | The remaining entries are branches back to the first entry, |
| 515 | followed by an index into the relocation table encoded to look like |
| 516 | a sethi of %g0. */ |
| 517 | |
| 518 | #define SPARC_PLT_ENTRY_SIZE (12) |
| 519 | |
| 520 | static const bfd_byte sparc_plt_first_entry[SPARC_PLT_ENTRY_SIZE] = |
| 521 | { |
| 522 | /* sethi %hi(0),%g1; address filled in by runtime linker. */ |
| 523 | 0x3, 0, 0, 0, |
| 524 | /* jmp %g1; offset filled in by runtime linker. */ |
| 525 | 0x81, 0xc0, 0x60, 0, |
| 526 | /* nop */ |
| 527 | 0x1, 0, 0, 0 |
| 528 | }; |
| 529 | |
| 530 | /* save %sp, -96, %sp */ |
| 531 | #define SPARC_PLT_ENTRY_WORD0 ((bfd_vma) 0x9de3bfa0) |
| 532 | /* call; address filled in later. */ |
| 533 | #define SPARC_PLT_ENTRY_WORD1 ((bfd_vma) 0x40000000) |
| 534 | /* sethi; reloc index filled in later. */ |
| 535 | #define SPARC_PLT_ENTRY_WORD2 ((bfd_vma) 0x01000000) |
| 536 | |
| 537 | /* This sequence is used when for the jump table entry to a defined |
| 538 | symbol in a complete executable. It is used when linking PIC |
| 539 | compiled code which is not being put into a shared library. */ |
| 540 | /* sethi <address to be filled in later>, %g1 */ |
| 541 | #define SPARC_PLT_PIC_WORD0 ((bfd_vma) 0x03000000) |
| 542 | /* jmp %g1 + <address to be filled in later> */ |
| 543 | #define SPARC_PLT_PIC_WORD1 ((bfd_vma) 0x81c06000) |
| 544 | /* nop */ |
| 545 | #define SPARC_PLT_PIC_WORD2 ((bfd_vma) 0x01000000) |
| 546 | |
| 547 | /* An m68k procedure linkage table entry is 8 bytes. The first entry |
| 548 | in the table is a jump which is filled in the by the runtime |
| 549 | linker. The remaining entries are branches back to the first |
| 550 | entry, followed by a two byte index into the relocation table. */ |
| 551 | |
| 552 | #define M68K_PLT_ENTRY_SIZE (8) |
| 553 | |
| 554 | static const bfd_byte m68k_plt_first_entry[M68K_PLT_ENTRY_SIZE] = |
| 555 | { |
| 556 | /* jmps @# */ |
| 557 | 0x4e, 0xf9, |
| 558 | /* Filled in by runtime linker with a magic address. */ |
| 559 | 0, 0, 0, 0, |
| 560 | /* Not used? */ |
| 561 | 0, 0 |
| 562 | }; |
| 563 | |
| 564 | /* bsrl */ |
| 565 | #define M68K_PLT_ENTRY_WORD0 ((bfd_vma) 0x61ff) |
| 566 | /* Remaining words filled in later. */ |
| 567 | |
| 568 | /* An entry in the SunOS linker hash table. */ |
| 569 | |
| 570 | struct sunos_link_hash_entry |
| 571 | { |
| 572 | struct aout_link_hash_entry root; |
| 573 | |
| 574 | /* If this is a dynamic symbol, this is its index into the dynamic |
| 575 | symbol table. This is initialized to -1. As the linker looks at |
| 576 | the input files, it changes this to -2 if it will be added to the |
| 577 | dynamic symbol table. After all the input files have been seen, |
| 578 | the linker will know whether to build a dynamic symbol table; if |
| 579 | it does build one, this becomes the index into the table. */ |
| 580 | long dynindx; |
| 581 | |
| 582 | /* If this is a dynamic symbol, this is the index of the name in the |
| 583 | dynamic symbol string table. */ |
| 584 | long dynstr_index; |
| 585 | |
| 586 | /* The offset into the global offset table used for this symbol. If |
| 587 | the symbol does not require a GOT entry, this is 0. */ |
| 588 | bfd_vma got_offset; |
| 589 | |
| 590 | /* The offset into the procedure linkage table used for this symbol. |
| 591 | If the symbol does not require a PLT entry, this is 0. */ |
| 592 | bfd_vma plt_offset; |
| 593 | |
| 594 | /* Some linker flags. */ |
| 595 | unsigned char flags; |
| 596 | /* Symbol is referenced by a regular object. */ |
| 597 | #define SUNOS_REF_REGULAR 01 |
| 598 | /* Symbol is defined by a regular object. */ |
| 599 | #define SUNOS_DEF_REGULAR 02 |
| 600 | /* Symbol is referenced by a dynamic object. */ |
| 601 | #define SUNOS_REF_DYNAMIC 04 |
| 602 | /* Symbol is defined by a dynamic object. */ |
| 603 | #define SUNOS_DEF_DYNAMIC 010 |
| 604 | /* Symbol is a constructor symbol in a regular object. */ |
| 605 | #define SUNOS_CONSTRUCTOR 020 |
| 606 | }; |
| 607 | |
| 608 | /* The SunOS linker hash table. */ |
| 609 | |
| 610 | struct sunos_link_hash_table |
| 611 | { |
| 612 | struct aout_link_hash_table root; |
| 613 | |
| 614 | /* The object which holds the dynamic sections. */ |
| 615 | bfd *dynobj; |
| 616 | |
| 617 | /* Whether we have created the dynamic sections. */ |
| 618 | bfd_boolean dynamic_sections_created; |
| 619 | |
| 620 | /* Whether we need the dynamic sections. */ |
| 621 | bfd_boolean dynamic_sections_needed; |
| 622 | |
| 623 | /* Whether we need the .got table. */ |
| 624 | bfd_boolean got_needed; |
| 625 | |
| 626 | /* The number of dynamic symbols. */ |
| 627 | size_t dynsymcount; |
| 628 | |
| 629 | /* The number of buckets in the hash table. */ |
| 630 | size_t bucketcount; |
| 631 | |
| 632 | /* The list of dynamic objects needed by dynamic objects included in |
| 633 | the link. */ |
| 634 | struct bfd_link_needed_list *needed; |
| 635 | |
| 636 | /* The offset of __GLOBAL_OFFSET_TABLE_ into the .got section. */ |
| 637 | bfd_vma got_base; |
| 638 | }; |
| 639 | |
| 640 | /* Routine to create an entry in an SunOS link hash table. */ |
| 641 | |
| 642 | static struct bfd_hash_entry * |
| 643 | sunos_link_hash_newfunc (struct bfd_hash_entry *entry, |
| 644 | struct bfd_hash_table *table, |
| 645 | const char *string) |
| 646 | { |
| 647 | struct sunos_link_hash_entry *ret = (struct sunos_link_hash_entry *) entry; |
| 648 | |
| 649 | /* Allocate the structure if it has not already been allocated by a |
| 650 | subclass. */ |
| 651 | if (ret == NULL) |
| 652 | ret = bfd_hash_allocate (table, sizeof (* ret)); |
| 653 | if (ret == NULL) |
| 654 | return NULL; |
| 655 | |
| 656 | /* Call the allocation method of the superclass. */ |
| 657 | ret = ((struct sunos_link_hash_entry *) |
| 658 | NAME (aout, link_hash_newfunc) ((struct bfd_hash_entry *) ret, |
| 659 | table, string)); |
| 660 | if (ret != NULL) |
| 661 | { |
| 662 | /* Set local fields. */ |
| 663 | ret->dynindx = -1; |
| 664 | ret->dynstr_index = -1; |
| 665 | ret->got_offset = 0; |
| 666 | ret->plt_offset = 0; |
| 667 | ret->flags = 0; |
| 668 | } |
| 669 | |
| 670 | return (struct bfd_hash_entry *) ret; |
| 671 | } |
| 672 | |
| 673 | /* Create a SunOS link hash table. */ |
| 674 | |
| 675 | static struct bfd_link_hash_table * |
| 676 | sunos_link_hash_table_create (bfd *abfd) |
| 677 | { |
| 678 | struct sunos_link_hash_table *ret; |
| 679 | bfd_size_type amt = sizeof (struct sunos_link_hash_table); |
| 680 | |
| 681 | ret = bfd_malloc (amt); |
| 682 | if (ret == NULL) |
| 683 | return NULL; |
| 684 | if (!NAME (aout, link_hash_table_init) (&ret->root, abfd, |
| 685 | sunos_link_hash_newfunc, |
| 686 | sizeof (struct sunos_link_hash_entry))) |
| 687 | { |
| 688 | free (ret); |
| 689 | return NULL; |
| 690 | } |
| 691 | |
| 692 | ret->dynobj = NULL; |
| 693 | ret->dynamic_sections_created = FALSE; |
| 694 | ret->dynamic_sections_needed = FALSE; |
| 695 | ret->got_needed = FALSE; |
| 696 | ret->dynsymcount = 0; |
| 697 | ret->bucketcount = 0; |
| 698 | ret->needed = NULL; |
| 699 | ret->got_base = 0; |
| 700 | |
| 701 | return &ret->root.root; |
| 702 | } |
| 703 | |
| 704 | /* Look up an entry in an SunOS link hash table. */ |
| 705 | |
| 706 | #define sunos_link_hash_lookup(table, string, create, copy, follow) \ |
| 707 | ((struct sunos_link_hash_entry *) \ |
| 708 | aout_link_hash_lookup (&(table)->root, (string), (create), (copy),\ |
| 709 | (follow))) |
| 710 | |
| 711 | /* Traverse a SunOS link hash table. */ |
| 712 | |
| 713 | #define sunos_link_hash_traverse(table, func, info) \ |
| 714 | (aout_link_hash_traverse \ |
| 715 | (&(table)->root, \ |
| 716 | (bfd_boolean (*) (struct aout_link_hash_entry *, void *)) (func), \ |
| 717 | (info))) |
| 718 | |
| 719 | /* Get the SunOS link hash table from the info structure. This is |
| 720 | just a cast. */ |
| 721 | |
| 722 | #define sunos_hash_table(p) ((struct sunos_link_hash_table *) ((p)->hash)) |
| 723 | |
| 724 | /* Create the dynamic sections needed if we are linking against a |
| 725 | dynamic object, or if we are linking PIC compiled code. ABFD is a |
| 726 | bfd we can attach the dynamic sections to. The linker script will |
| 727 | look for these special sections names and put them in the right |
| 728 | place in the output file. See include/aout/sun4.h for more details |
| 729 | of the dynamic linking information. */ |
| 730 | |
| 731 | static bfd_boolean |
| 732 | sunos_create_dynamic_sections (bfd *abfd, |
| 733 | struct bfd_link_info *info, |
| 734 | bfd_boolean needed) |
| 735 | { |
| 736 | asection *s; |
| 737 | |
| 738 | if (! sunos_hash_table (info)->dynamic_sections_created) |
| 739 | { |
| 740 | flagword flags; |
| 741 | |
| 742 | sunos_hash_table (info)->dynobj = abfd; |
| 743 | |
| 744 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 745 | | SEC_LINKER_CREATED); |
| 746 | |
| 747 | /* The .dynamic section holds the basic dynamic information: the |
| 748 | sun4_dynamic structure, the dynamic debugger information, and |
| 749 | the sun4_dynamic_link structure. */ |
| 750 | s = bfd_make_section_with_flags (abfd, ".dynamic", flags); |
| 751 | if (s == NULL |
| 752 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 753 | return FALSE; |
| 754 | |
| 755 | /* The .got section holds the global offset table. The address |
| 756 | is put in the ld_got field. */ |
| 757 | s = bfd_make_section_with_flags (abfd, ".got", flags); |
| 758 | if (s == NULL |
| 759 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 760 | return FALSE; |
| 761 | |
| 762 | /* The .plt section holds the procedure linkage table. The |
| 763 | address is put in the ld_plt field. */ |
| 764 | s = bfd_make_section_with_flags (abfd, ".plt", flags | SEC_CODE); |
| 765 | if (s == NULL |
| 766 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 767 | return FALSE; |
| 768 | |
| 769 | /* The .dynrel section holds the dynamic relocs. The address is |
| 770 | put in the ld_rel field. */ |
| 771 | s = bfd_make_section_with_flags (abfd, ".dynrel", flags | SEC_READONLY); |
| 772 | if (s == NULL |
| 773 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 774 | return FALSE; |
| 775 | |
| 776 | /* The .hash section holds the dynamic hash table. The address |
| 777 | is put in the ld_hash field. */ |
| 778 | s = bfd_make_section_with_flags (abfd, ".hash", flags | SEC_READONLY); |
| 779 | if (s == NULL |
| 780 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 781 | return FALSE; |
| 782 | |
| 783 | /* The .dynsym section holds the dynamic symbols. The address |
| 784 | is put in the ld_stab field. */ |
| 785 | s = bfd_make_section_with_flags (abfd, ".dynsym", flags | SEC_READONLY); |
| 786 | if (s == NULL |
| 787 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 788 | return FALSE; |
| 789 | |
| 790 | /* The .dynstr section holds the dynamic symbol string table. |
| 791 | The address is put in the ld_symbols field. */ |
| 792 | s = bfd_make_section_with_flags (abfd, ".dynstr", flags | SEC_READONLY); |
| 793 | if (s == NULL |
| 794 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 795 | return FALSE; |
| 796 | |
| 797 | sunos_hash_table (info)->dynamic_sections_created = TRUE; |
| 798 | } |
| 799 | |
| 800 | if ((needed && ! sunos_hash_table (info)->dynamic_sections_needed) |
| 801 | || info->shared) |
| 802 | { |
| 803 | bfd *dynobj; |
| 804 | |
| 805 | dynobj = sunos_hash_table (info)->dynobj; |
| 806 | |
| 807 | s = bfd_get_section_by_name (dynobj, ".got"); |
| 808 | if (s->size == 0) |
| 809 | s->size = BYTES_IN_WORD; |
| 810 | |
| 811 | sunos_hash_table (info)->dynamic_sections_needed = TRUE; |
| 812 | sunos_hash_table (info)->got_needed = TRUE; |
| 813 | } |
| 814 | |
| 815 | return TRUE; |
| 816 | } |
| 817 | |
| 818 | /* Add dynamic symbols during a link. This is called by the a.out |
| 819 | backend linker for each object it encounters. */ |
| 820 | |
| 821 | static bfd_boolean |
| 822 | sunos_add_dynamic_symbols (bfd *abfd, |
| 823 | struct bfd_link_info *info, |
| 824 | struct external_nlist **symsp, |
| 825 | bfd_size_type *sym_countp, |
| 826 | char **stringsp) |
| 827 | { |
| 828 | bfd *dynobj; |
| 829 | struct sunos_dynamic_info *dinfo; |
| 830 | unsigned long need; |
| 831 | |
| 832 | /* Make sure we have all the required sections. */ |
| 833 | if (info->output_bfd->xvec == abfd->xvec) |
| 834 | { |
| 835 | if (! sunos_create_dynamic_sections (abfd, info, |
| 836 | ((abfd->flags & DYNAMIC) != 0 |
| 837 | && !info->relocatable))) |
| 838 | return FALSE; |
| 839 | } |
| 840 | |
| 841 | /* There is nothing else to do for a normal object. */ |
| 842 | if ((abfd->flags & DYNAMIC) == 0) |
| 843 | return TRUE; |
| 844 | |
| 845 | dynobj = sunos_hash_table (info)->dynobj; |
| 846 | |
| 847 | /* We do not want to include the sections in a dynamic object in the |
| 848 | output file. We hack by simply clobbering the list of sections |
| 849 | in the BFD. This could be handled more cleanly by, say, a new |
| 850 | section flag; the existing SEC_NEVER_LOAD flag is not the one we |
| 851 | want, because that one still implies that the section takes up |
| 852 | space in the output file. If this is the first object we have |
| 853 | seen, we must preserve the dynamic sections we just created. */ |
| 854 | if (abfd != dynobj) |
| 855 | abfd->sections = NULL; |
| 856 | else |
| 857 | { |
| 858 | asection *s; |
| 859 | |
| 860 | for (s = abfd->sections; s != NULL; s = s->next) |
| 861 | { |
| 862 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
| 863 | bfd_section_list_remove (abfd, s); |
| 864 | } |
| 865 | } |
| 866 | |
| 867 | /* The native linker seems to just ignore dynamic objects when -r is |
| 868 | used. */ |
| 869 | if (info->relocatable) |
| 870 | return TRUE; |
| 871 | |
| 872 | /* There's no hope of using a dynamic object which does not exactly |
| 873 | match the format of the output file. */ |
| 874 | if (info->output_bfd->xvec != abfd->xvec) |
| 875 | { |
| 876 | bfd_set_error (bfd_error_invalid_operation); |
| 877 | return FALSE; |
| 878 | } |
| 879 | |
| 880 | /* Make sure we have a .need and a .rules sections. These are only |
| 881 | needed if there really is a dynamic object in the link, so they |
| 882 | are not added by sunos_create_dynamic_sections. */ |
| 883 | if (bfd_get_section_by_name (dynobj, ".need") == NULL) |
| 884 | { |
| 885 | /* The .need section holds the list of names of shared objets |
| 886 | which must be included at runtime. The address of this |
| 887 | section is put in the ld_need field. */ |
| 888 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
| 889 | | SEC_IN_MEMORY | SEC_READONLY); |
| 890 | asection *s = bfd_make_section_with_flags (dynobj, ".need", flags); |
| 891 | if (s == NULL |
| 892 | || ! bfd_set_section_alignment (dynobj, s, 2)) |
| 893 | return FALSE; |
| 894 | } |
| 895 | |
| 896 | if (bfd_get_section_by_name (dynobj, ".rules") == NULL) |
| 897 | { |
| 898 | /* The .rules section holds the path to search for shared |
| 899 | objects. The address of this section is put in the ld_rules |
| 900 | field. */ |
| 901 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
| 902 | | SEC_IN_MEMORY | SEC_READONLY); |
| 903 | asection *s = bfd_make_section_with_flags (dynobj, ".rules", flags); |
| 904 | if (s == NULL |
| 905 | || ! bfd_set_section_alignment (dynobj, s, 2)) |
| 906 | return FALSE; |
| 907 | } |
| 908 | |
| 909 | /* Pick up the dynamic symbols and return them to the caller. */ |
| 910 | if (! sunos_slurp_dynamic_symtab (abfd)) |
| 911 | return FALSE; |
| 912 | |
| 913 | dinfo = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| 914 | *symsp = dinfo->dynsym; |
| 915 | *sym_countp = dinfo->dynsym_count; |
| 916 | *stringsp = dinfo->dynstr; |
| 917 | |
| 918 | /* Record information about any other objects needed by this one. */ |
| 919 | need = dinfo->dyninfo.ld_need; |
| 920 | while (need != 0) |
| 921 | { |
| 922 | bfd_byte buf[16]; |
| 923 | unsigned long name, flags; |
| 924 | unsigned short major_vno, minor_vno; |
| 925 | struct bfd_link_needed_list *needed, **pp; |
| 926 | char *namebuf, *p; |
| 927 | bfd_size_type alc; |
| 928 | bfd_byte b; |
| 929 | char *namecopy; |
| 930 | |
| 931 | if (bfd_seek (abfd, (file_ptr) need, SEEK_SET) != 0 |
| 932 | || bfd_bread (buf, (bfd_size_type) 16, abfd) != 16) |
| 933 | return FALSE; |
| 934 | |
| 935 | /* For the format of an ld_need entry, see aout/sun4.h. We |
| 936 | should probably define structs for this manipulation. */ |
| 937 | name = bfd_get_32 (abfd, buf); |
| 938 | flags = bfd_get_32 (abfd, buf + 4); |
| 939 | major_vno = (unsigned short) bfd_get_16 (abfd, buf + 8); |
| 940 | minor_vno = (unsigned short) bfd_get_16 (abfd, buf + 10); |
| 941 | need = bfd_get_32 (abfd, buf + 12); |
| 942 | |
| 943 | alc = sizeof (struct bfd_link_needed_list); |
| 944 | needed = bfd_alloc (abfd, alc); |
| 945 | if (needed == NULL) |
| 946 | return FALSE; |
| 947 | needed->by = abfd; |
| 948 | |
| 949 | /* We return the name as [-l]name[.maj][.min]. */ |
| 950 | alc = 30; |
| 951 | namebuf = bfd_malloc (alc + 1); |
| 952 | if (namebuf == NULL) |
| 953 | return FALSE; |
| 954 | p = namebuf; |
| 955 | |
| 956 | if ((flags & 0x80000000) != 0) |
| 957 | { |
| 958 | *p++ = '-'; |
| 959 | *p++ = 'l'; |
| 960 | } |
| 961 | if (bfd_seek (abfd, (file_ptr) name, SEEK_SET) != 0) |
| 962 | { |
| 963 | free (namebuf); |
| 964 | return FALSE; |
| 965 | } |
| 966 | |
| 967 | do |
| 968 | { |
| 969 | if (bfd_bread (&b, (bfd_size_type) 1, abfd) != 1) |
| 970 | { |
| 971 | free (namebuf); |
| 972 | return FALSE; |
| 973 | } |
| 974 | |
| 975 | if ((bfd_size_type) (p - namebuf) >= alc) |
| 976 | { |
| 977 | char *n; |
| 978 | |
| 979 | alc *= 2; |
| 980 | n = bfd_realloc (namebuf, alc + 1); |
| 981 | if (n == NULL) |
| 982 | { |
| 983 | free (namebuf); |
| 984 | return FALSE; |
| 985 | } |
| 986 | p = n + (p - namebuf); |
| 987 | namebuf = n; |
| 988 | } |
| 989 | |
| 990 | *p++ = b; |
| 991 | } |
| 992 | while (b != '\0'); |
| 993 | |
| 994 | if (major_vno == 0) |
| 995 | *p = '\0'; |
| 996 | else |
| 997 | { |
| 998 | char majbuf[30]; |
| 999 | char minbuf[30]; |
| 1000 | |
| 1001 | sprintf (majbuf, ".%d", major_vno); |
| 1002 | if (minor_vno == 0) |
| 1003 | minbuf[0] = '\0'; |
| 1004 | else |
| 1005 | sprintf (minbuf, ".%d", minor_vno); |
| 1006 | |
| 1007 | if ((p - namebuf) + strlen (majbuf) + strlen (minbuf) >= alc) |
| 1008 | { |
| 1009 | char *n; |
| 1010 | |
| 1011 | alc = (p - namebuf) + strlen (majbuf) + strlen (minbuf); |
| 1012 | n = bfd_realloc (namebuf, alc + 1); |
| 1013 | if (n == NULL) |
| 1014 | { |
| 1015 | free (namebuf); |
| 1016 | return FALSE; |
| 1017 | } |
| 1018 | p = n + (p - namebuf); |
| 1019 | namebuf = n; |
| 1020 | } |
| 1021 | |
| 1022 | strcpy (p, majbuf); |
| 1023 | strcat (p, minbuf); |
| 1024 | } |
| 1025 | |
| 1026 | namecopy = bfd_alloc (abfd, (bfd_size_type) strlen (namebuf) + 1); |
| 1027 | if (namecopy == NULL) |
| 1028 | { |
| 1029 | free (namebuf); |
| 1030 | return FALSE; |
| 1031 | } |
| 1032 | strcpy (namecopy, namebuf); |
| 1033 | free (namebuf); |
| 1034 | needed->name = namecopy; |
| 1035 | |
| 1036 | needed->next = NULL; |
| 1037 | |
| 1038 | for (pp = &sunos_hash_table (info)->needed; |
| 1039 | *pp != NULL; |
| 1040 | pp = &(*pp)->next) |
| 1041 | ; |
| 1042 | *pp = needed; |
| 1043 | } |
| 1044 | |
| 1045 | return TRUE; |
| 1046 | } |
| 1047 | |
| 1048 | /* Function to add a single symbol to the linker hash table. This is |
| 1049 | a wrapper around _bfd_generic_link_add_one_symbol which handles the |
| 1050 | tweaking needed for dynamic linking support. */ |
| 1051 | |
| 1052 | static bfd_boolean |
| 1053 | sunos_add_one_symbol (struct bfd_link_info *info, |
| 1054 | bfd *abfd, |
| 1055 | const char *name, |
| 1056 | flagword flags, |
| 1057 | asection *section, |
| 1058 | bfd_vma value, |
| 1059 | const char *string, |
| 1060 | bfd_boolean copy, |
| 1061 | bfd_boolean collect, |
| 1062 | struct bfd_link_hash_entry **hashp) |
| 1063 | { |
| 1064 | struct sunos_link_hash_entry *h; |
| 1065 | int new_flag; |
| 1066 | |
| 1067 | if ((flags & (BSF_INDIRECT | BSF_WARNING | BSF_CONSTRUCTOR)) != 0 |
| 1068 | || ! bfd_is_und_section (section)) |
| 1069 | h = sunos_link_hash_lookup (sunos_hash_table (info), name, TRUE, copy, |
| 1070 | FALSE); |
| 1071 | else |
| 1072 | h = ((struct sunos_link_hash_entry *) |
| 1073 | bfd_wrapped_link_hash_lookup (abfd, info, name, TRUE, copy, FALSE)); |
| 1074 | if (h == NULL) |
| 1075 | return FALSE; |
| 1076 | |
| 1077 | if (hashp != NULL) |
| 1078 | *hashp = (struct bfd_link_hash_entry *) h; |
| 1079 | |
| 1080 | /* Treat a common symbol in a dynamic object as defined in the .bss |
| 1081 | section of the dynamic object. We don't want to allocate space |
| 1082 | for it in our process image. */ |
| 1083 | if ((abfd->flags & DYNAMIC) != 0 |
| 1084 | && bfd_is_com_section (section)) |
| 1085 | section = obj_bsssec (abfd); |
| 1086 | |
| 1087 | if (! bfd_is_und_section (section) |
| 1088 | && h->root.root.type != bfd_link_hash_new |
| 1089 | && h->root.root.type != bfd_link_hash_undefined |
| 1090 | && h->root.root.type != bfd_link_hash_defweak) |
| 1091 | { |
| 1092 | /* We are defining the symbol, and it is already defined. This |
| 1093 | is a potential multiple definition error. */ |
| 1094 | if ((abfd->flags & DYNAMIC) != 0) |
| 1095 | { |
| 1096 | /* The definition we are adding is from a dynamic object. |
| 1097 | We do not want this new definition to override the |
| 1098 | existing definition, so we pretend it is just a |
| 1099 | reference. */ |
| 1100 | section = bfd_und_section_ptr; |
| 1101 | } |
| 1102 | else if (h->root.root.type == bfd_link_hash_defined |
| 1103 | && h->root.root.u.def.section->owner != NULL |
| 1104 | && (h->root.root.u.def.section->owner->flags & DYNAMIC) != 0) |
| 1105 | { |
| 1106 | /* The existing definition is from a dynamic object. We |
| 1107 | want to override it with the definition we just found. |
| 1108 | Clobber the existing definition. */ |
| 1109 | h->root.root.type = bfd_link_hash_undefined; |
| 1110 | h->root.root.u.undef.abfd = h->root.root.u.def.section->owner; |
| 1111 | } |
| 1112 | else if (h->root.root.type == bfd_link_hash_common |
| 1113 | && (h->root.root.u.c.p->section->owner->flags & DYNAMIC) != 0) |
| 1114 | { |
| 1115 | /* The existing definition is from a dynamic object. We |
| 1116 | want to override it with the definition we just found. |
| 1117 | Clobber the existing definition. We can't set it to new, |
| 1118 | because it is on the undefined list. */ |
| 1119 | h->root.root.type = bfd_link_hash_undefined; |
| 1120 | h->root.root.u.undef.abfd = h->root.root.u.c.p->section->owner; |
| 1121 | } |
| 1122 | } |
| 1123 | |
| 1124 | if ((abfd->flags & DYNAMIC) != 0 |
| 1125 | && abfd->xvec == info->output_bfd->xvec |
| 1126 | && (h->flags & SUNOS_CONSTRUCTOR) != 0) |
| 1127 | /* The existing symbol is a constructor symbol, and this symbol |
| 1128 | is from a dynamic object. A constructor symbol is actually a |
| 1129 | definition, although the type will be bfd_link_hash_undefined |
| 1130 | at this point. We want to ignore the definition from the |
| 1131 | dynamic object. */ |
| 1132 | section = bfd_und_section_ptr; |
| 1133 | else if ((flags & BSF_CONSTRUCTOR) != 0 |
| 1134 | && (abfd->flags & DYNAMIC) == 0 |
| 1135 | && h->root.root.type == bfd_link_hash_defined |
| 1136 | && h->root.root.u.def.section->owner != NULL |
| 1137 | && (h->root.root.u.def.section->owner->flags & DYNAMIC) != 0) |
| 1138 | /* The existing symbol is defined by a dynamic object, and this |
| 1139 | is a constructor symbol. As above, we want to force the use |
| 1140 | of the constructor symbol from the regular object. */ |
| 1141 | h->root.root.type = bfd_link_hash_new; |
| 1142 | |
| 1143 | /* Do the usual procedure for adding a symbol. */ |
| 1144 | if (! _bfd_generic_link_add_one_symbol (info, abfd, name, flags, section, |
| 1145 | value, string, copy, collect, |
| 1146 | hashp)) |
| 1147 | return FALSE; |
| 1148 | |
| 1149 | if (abfd->xvec == info->output_bfd->xvec) |
| 1150 | { |
| 1151 | /* Set a flag in the hash table entry indicating the type of |
| 1152 | reference or definition we just found. Keep a count of the |
| 1153 | number of dynamic symbols we find. A dynamic symbol is one |
| 1154 | which is referenced or defined by both a regular object and a |
| 1155 | shared object. */ |
| 1156 | if ((abfd->flags & DYNAMIC) == 0) |
| 1157 | { |
| 1158 | if (bfd_is_und_section (section)) |
| 1159 | new_flag = SUNOS_REF_REGULAR; |
| 1160 | else |
| 1161 | new_flag = SUNOS_DEF_REGULAR; |
| 1162 | } |
| 1163 | else |
| 1164 | { |
| 1165 | if (bfd_is_und_section (section)) |
| 1166 | new_flag = SUNOS_REF_DYNAMIC; |
| 1167 | else |
| 1168 | new_flag = SUNOS_DEF_DYNAMIC; |
| 1169 | } |
| 1170 | h->flags |= new_flag; |
| 1171 | |
| 1172 | if (h->dynindx == -1 |
| 1173 | && (h->flags & (SUNOS_DEF_REGULAR | SUNOS_REF_REGULAR)) != 0) |
| 1174 | { |
| 1175 | ++sunos_hash_table (info)->dynsymcount; |
| 1176 | h->dynindx = -2; |
| 1177 | } |
| 1178 | |
| 1179 | if ((flags & BSF_CONSTRUCTOR) != 0 |
| 1180 | && (abfd->flags & DYNAMIC) == 0) |
| 1181 | h->flags |= SUNOS_CONSTRUCTOR; |
| 1182 | } |
| 1183 | |
| 1184 | return TRUE; |
| 1185 | } |
| 1186 | |
| 1187 | extern const bfd_target MY (vec); |
| 1188 | |
| 1189 | /* Return the list of objects needed by BFD. */ |
| 1190 | |
| 1191 | struct bfd_link_needed_list * |
| 1192 | bfd_sunos_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED, |
| 1193 | struct bfd_link_info *info) |
| 1194 | { |
| 1195 | if (info->output_bfd->xvec != &MY (vec)) |
| 1196 | return NULL; |
| 1197 | return sunos_hash_table (info)->needed; |
| 1198 | } |
| 1199 | |
| 1200 | /* Record an assignment made to a symbol by a linker script. We need |
| 1201 | this in case some dynamic object refers to this symbol. */ |
| 1202 | |
| 1203 | bfd_boolean |
| 1204 | bfd_sunos_record_link_assignment (bfd *output_bfd, |
| 1205 | struct bfd_link_info *info, |
| 1206 | const char *name) |
| 1207 | { |
| 1208 | struct sunos_link_hash_entry *h; |
| 1209 | |
| 1210 | if (output_bfd->xvec != &MY(vec)) |
| 1211 | return TRUE; |
| 1212 | |
| 1213 | /* This is called after we have examined all the input objects. If |
| 1214 | the symbol does not exist, it merely means that no object refers |
| 1215 | to it, and we can just ignore it at this point. */ |
| 1216 | h = sunos_link_hash_lookup (sunos_hash_table (info), name, |
| 1217 | FALSE, FALSE, FALSE); |
| 1218 | if (h == NULL) |
| 1219 | return TRUE; |
| 1220 | |
| 1221 | /* In a shared library, the __DYNAMIC symbol does not appear in the |
| 1222 | dynamic symbol table. */ |
| 1223 | if (! info->shared || strcmp (name, "__DYNAMIC") != 0) |
| 1224 | { |
| 1225 | h->flags |= SUNOS_DEF_REGULAR; |
| 1226 | |
| 1227 | if (h->dynindx == -1) |
| 1228 | { |
| 1229 | ++sunos_hash_table (info)->dynsymcount; |
| 1230 | h->dynindx = -2; |
| 1231 | } |
| 1232 | } |
| 1233 | |
| 1234 | return TRUE; |
| 1235 | } |
| 1236 | |
| 1237 | /* Scan the relocs for an input section using standard relocs. We |
| 1238 | need to figure out what to do for each reloc against a dynamic |
| 1239 | symbol. If the symbol is in the .text section, an entry is made in |
| 1240 | the procedure linkage table. Note that this will do the wrong |
| 1241 | thing if the symbol is actually data; I don't think the Sun 3 |
| 1242 | native linker handles this case correctly either. If the symbol is |
| 1243 | not in the .text section, we must preserve the reloc as a dynamic |
| 1244 | reloc. FIXME: We should also handle the PIC relocs here by |
| 1245 | building global offset table entries. */ |
| 1246 | |
| 1247 | static bfd_boolean |
| 1248 | sunos_scan_std_relocs (struct bfd_link_info *info, |
| 1249 | bfd *abfd, |
| 1250 | asection *sec ATTRIBUTE_UNUSED, |
| 1251 | const struct reloc_std_external *relocs, |
| 1252 | bfd_size_type rel_size) |
| 1253 | { |
| 1254 | bfd *dynobj; |
| 1255 | asection *splt = NULL; |
| 1256 | asection *srel = NULL; |
| 1257 | struct sunos_link_hash_entry **sym_hashes; |
| 1258 | const struct reloc_std_external *rel, *relend; |
| 1259 | |
| 1260 | /* We only know how to handle m68k plt entries. */ |
| 1261 | if (bfd_get_arch (abfd) != bfd_arch_m68k) |
| 1262 | { |
| 1263 | bfd_set_error (bfd_error_invalid_target); |
| 1264 | return FALSE; |
| 1265 | } |
| 1266 | |
| 1267 | dynobj = NULL; |
| 1268 | |
| 1269 | sym_hashes = (struct sunos_link_hash_entry **) obj_aout_sym_hashes (abfd); |
| 1270 | |
| 1271 | relend = relocs + rel_size / RELOC_STD_SIZE; |
| 1272 | for (rel = relocs; rel < relend; rel++) |
| 1273 | { |
| 1274 | int r_index; |
| 1275 | struct sunos_link_hash_entry *h; |
| 1276 | |
| 1277 | /* We only want relocs against external symbols. */ |
| 1278 | if (bfd_header_big_endian (abfd)) |
| 1279 | { |
| 1280 | if ((rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG) == 0) |
| 1281 | continue; |
| 1282 | } |
| 1283 | else |
| 1284 | { |
| 1285 | if ((rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE) == 0) |
| 1286 | continue; |
| 1287 | } |
| 1288 | |
| 1289 | /* Get the symbol index. */ |
| 1290 | if (bfd_header_big_endian (abfd)) |
| 1291 | r_index = ((rel->r_index[0] << 16) |
| 1292 | | (rel->r_index[1] << 8) |
| 1293 | | rel->r_index[2]); |
| 1294 | else |
| 1295 | r_index = ((rel->r_index[2] << 16) |
| 1296 | | (rel->r_index[1] << 8) |
| 1297 | | rel->r_index[0]); |
| 1298 | |
| 1299 | /* Get the hash table entry. */ |
| 1300 | h = sym_hashes[r_index]; |
| 1301 | if (h == NULL) |
| 1302 | /* This should not normally happen, but it will in any case |
| 1303 | be caught in the relocation phase. */ |
| 1304 | continue; |
| 1305 | |
| 1306 | /* At this point common symbols have already been allocated, so |
| 1307 | we don't have to worry about them. We need to consider that |
| 1308 | we may have already seen this symbol and marked it undefined; |
| 1309 | if the symbol is really undefined, then SUNOS_DEF_DYNAMIC |
| 1310 | will be zero. */ |
| 1311 | if (h->root.root.type != bfd_link_hash_defined |
| 1312 | && h->root.root.type != bfd_link_hash_defweak |
| 1313 | && h->root.root.type != bfd_link_hash_undefined) |
| 1314 | continue; |
| 1315 | |
| 1316 | if ((h->flags & SUNOS_DEF_DYNAMIC) == 0 |
| 1317 | || (h->flags & SUNOS_DEF_REGULAR) != 0) |
| 1318 | continue; |
| 1319 | |
| 1320 | if (dynobj == NULL) |
| 1321 | { |
| 1322 | asection *sgot; |
| 1323 | |
| 1324 | if (! sunos_create_dynamic_sections (abfd, info, FALSE)) |
| 1325 | return FALSE; |
| 1326 | dynobj = sunos_hash_table (info)->dynobj; |
| 1327 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 1328 | srel = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 1329 | BFD_ASSERT (splt != NULL && srel != NULL); |
| 1330 | |
| 1331 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 1332 | BFD_ASSERT (sgot != NULL); |
| 1333 | if (sgot->size == 0) |
| 1334 | sgot->size = BYTES_IN_WORD; |
| 1335 | sunos_hash_table (info)->got_needed = TRUE; |
| 1336 | } |
| 1337 | |
| 1338 | BFD_ASSERT ((h->flags & SUNOS_REF_REGULAR) != 0); |
| 1339 | BFD_ASSERT (h->plt_offset != 0 |
| 1340 | || ((h->root.root.type == bfd_link_hash_defined |
| 1341 | || h->root.root.type == bfd_link_hash_defweak) |
| 1342 | ? (h->root.root.u.def.section->owner->flags |
| 1343 | & DYNAMIC) != 0 |
| 1344 | : (h->root.root.u.undef.abfd->flags & DYNAMIC) != 0)); |
| 1345 | |
| 1346 | /* This reloc is against a symbol defined only by a dynamic |
| 1347 | object. */ |
| 1348 | if (h->root.root.type == bfd_link_hash_undefined) |
| 1349 | /* Presumably this symbol was marked as being undefined by |
| 1350 | an earlier reloc. */ |
| 1351 | srel->size += RELOC_STD_SIZE; |
| 1352 | else if ((h->root.root.u.def.section->flags & SEC_CODE) == 0) |
| 1353 | { |
| 1354 | bfd *sub; |
| 1355 | |
| 1356 | /* This reloc is not in the .text section. It must be |
| 1357 | copied into the dynamic relocs. We mark the symbol as |
| 1358 | being undefined. */ |
| 1359 | srel->size += RELOC_STD_SIZE; |
| 1360 | sub = h->root.root.u.def.section->owner; |
| 1361 | h->root.root.type = bfd_link_hash_undefined; |
| 1362 | h->root.root.u.undef.abfd = sub; |
| 1363 | } |
| 1364 | else |
| 1365 | { |
| 1366 | /* This symbol is in the .text section. We must give it an |
| 1367 | entry in the procedure linkage table, if we have not |
| 1368 | already done so. We change the definition of the symbol |
| 1369 | to the .plt section; this will cause relocs against it to |
| 1370 | be handled correctly. */ |
| 1371 | if (h->plt_offset == 0) |
| 1372 | { |
| 1373 | if (splt->size == 0) |
| 1374 | splt->size = M68K_PLT_ENTRY_SIZE; |
| 1375 | h->plt_offset = splt->size; |
| 1376 | |
| 1377 | if ((h->flags & SUNOS_DEF_REGULAR) == 0) |
| 1378 | { |
| 1379 | h->root.root.u.def.section = splt; |
| 1380 | h->root.root.u.def.value = splt->size; |
| 1381 | } |
| 1382 | |
| 1383 | splt->size += M68K_PLT_ENTRY_SIZE; |
| 1384 | |
| 1385 | /* We may also need a dynamic reloc entry. */ |
| 1386 | if ((h->flags & SUNOS_DEF_REGULAR) == 0) |
| 1387 | srel->size += RELOC_STD_SIZE; |
| 1388 | } |
| 1389 | } |
| 1390 | } |
| 1391 | |
| 1392 | return TRUE; |
| 1393 | } |
| 1394 | |
| 1395 | /* Scan the relocs for an input section using extended relocs. We |
| 1396 | need to figure out what to do for each reloc against a dynamic |
| 1397 | symbol. If the reloc is a WDISP30, and the symbol is in the .text |
| 1398 | section, an entry is made in the procedure linkage table. |
| 1399 | Otherwise, we must preserve the reloc as a dynamic reloc. */ |
| 1400 | |
| 1401 | static bfd_boolean |
| 1402 | sunos_scan_ext_relocs (struct bfd_link_info *info, |
| 1403 | bfd *abfd, |
| 1404 | asection *sec ATTRIBUTE_UNUSED, |
| 1405 | const struct reloc_ext_external *relocs, |
| 1406 | bfd_size_type rel_size) |
| 1407 | { |
| 1408 | bfd *dynobj; |
| 1409 | struct sunos_link_hash_entry **sym_hashes; |
| 1410 | const struct reloc_ext_external *rel, *relend; |
| 1411 | asection *splt = NULL; |
| 1412 | asection *sgot = NULL; |
| 1413 | asection *srel = NULL; |
| 1414 | bfd_size_type amt; |
| 1415 | |
| 1416 | /* We only know how to handle SPARC plt entries. */ |
| 1417 | if (bfd_get_arch (abfd) != bfd_arch_sparc) |
| 1418 | { |
| 1419 | bfd_set_error (bfd_error_invalid_target); |
| 1420 | return FALSE; |
| 1421 | } |
| 1422 | |
| 1423 | dynobj = NULL; |
| 1424 | |
| 1425 | sym_hashes = (struct sunos_link_hash_entry **) obj_aout_sym_hashes (abfd); |
| 1426 | |
| 1427 | relend = relocs + rel_size / RELOC_EXT_SIZE; |
| 1428 | for (rel = relocs; rel < relend; rel++) |
| 1429 | { |
| 1430 | unsigned int r_index; |
| 1431 | int r_extern; |
| 1432 | int r_type; |
| 1433 | struct sunos_link_hash_entry *h = NULL; |
| 1434 | |
| 1435 | /* Swap in the reloc information. */ |
| 1436 | if (bfd_header_big_endian (abfd)) |
| 1437 | { |
| 1438 | r_index = ((rel->r_index[0] << 16) |
| 1439 | | (rel->r_index[1] << 8) |
| 1440 | | rel->r_index[2]); |
| 1441 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); |
| 1442 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) |
| 1443 | >> RELOC_EXT_BITS_TYPE_SH_BIG); |
| 1444 | } |
| 1445 | else |
| 1446 | { |
| 1447 | r_index = ((rel->r_index[2] << 16) |
| 1448 | | (rel->r_index[1] << 8) |
| 1449 | | rel->r_index[0]); |
| 1450 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); |
| 1451 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) |
| 1452 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); |
| 1453 | } |
| 1454 | |
| 1455 | if (r_extern) |
| 1456 | { |
| 1457 | h = sym_hashes[r_index]; |
| 1458 | if (h == NULL) |
| 1459 | { |
| 1460 | /* This should not normally happen, but it will in any |
| 1461 | case be caught in the relocation phase. */ |
| 1462 | continue; |
| 1463 | } |
| 1464 | } |
| 1465 | |
| 1466 | /* If this is a base relative reloc, we need to make an entry in |
| 1467 | the .got section. */ |
| 1468 | if (r_type == RELOC_BASE10 |
| 1469 | || r_type == RELOC_BASE13 |
| 1470 | || r_type == RELOC_BASE22) |
| 1471 | { |
| 1472 | if (dynobj == NULL) |
| 1473 | { |
| 1474 | if (! sunos_create_dynamic_sections (abfd, info, FALSE)) |
| 1475 | return FALSE; |
| 1476 | dynobj = sunos_hash_table (info)->dynobj; |
| 1477 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 1478 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 1479 | srel = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 1480 | BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); |
| 1481 | |
| 1482 | /* Make sure we have an initial entry in the .got table. */ |
| 1483 | if (sgot->size == 0) |
| 1484 | sgot->size = BYTES_IN_WORD; |
| 1485 | sunos_hash_table (info)->got_needed = TRUE; |
| 1486 | } |
| 1487 | |
| 1488 | if (r_extern) |
| 1489 | { |
| 1490 | if (h->got_offset != 0) |
| 1491 | continue; |
| 1492 | |
| 1493 | h->got_offset = sgot->size; |
| 1494 | } |
| 1495 | else |
| 1496 | { |
| 1497 | if (r_index >= bfd_get_symcount (abfd)) |
| 1498 | /* This is abnormal, but should be caught in the |
| 1499 | relocation phase. */ |
| 1500 | continue; |
| 1501 | |
| 1502 | if (adata (abfd).local_got_offsets == NULL) |
| 1503 | { |
| 1504 | amt = bfd_get_symcount (abfd); |
| 1505 | amt *= sizeof (bfd_vma); |
| 1506 | adata (abfd).local_got_offsets = bfd_zalloc (abfd, amt); |
| 1507 | if (adata (abfd).local_got_offsets == NULL) |
| 1508 | return FALSE; |
| 1509 | } |
| 1510 | |
| 1511 | if (adata (abfd).local_got_offsets[r_index] != 0) |
| 1512 | continue; |
| 1513 | |
| 1514 | adata (abfd).local_got_offsets[r_index] = sgot->size; |
| 1515 | } |
| 1516 | |
| 1517 | sgot->size += BYTES_IN_WORD; |
| 1518 | |
| 1519 | /* If we are making a shared library, or if the symbol is |
| 1520 | defined by a dynamic object, we will need a dynamic reloc |
| 1521 | entry. */ |
| 1522 | if (info->shared |
| 1523 | || (h != NULL |
| 1524 | && (h->flags & SUNOS_DEF_DYNAMIC) != 0 |
| 1525 | && (h->flags & SUNOS_DEF_REGULAR) == 0)) |
| 1526 | srel->size += RELOC_EXT_SIZE; |
| 1527 | |
| 1528 | continue; |
| 1529 | } |
| 1530 | |
| 1531 | /* Otherwise, we are only interested in relocs against symbols |
| 1532 | defined in dynamic objects but not in regular objects. We |
| 1533 | only need to consider relocs against external symbols. */ |
| 1534 | if (! r_extern) |
| 1535 | { |
| 1536 | /* But, if we are creating a shared library, we need to |
| 1537 | generate an absolute reloc. */ |
| 1538 | if (info->shared) |
| 1539 | { |
| 1540 | if (dynobj == NULL) |
| 1541 | { |
| 1542 | if (! sunos_create_dynamic_sections (abfd, info, TRUE)) |
| 1543 | return FALSE; |
| 1544 | dynobj = sunos_hash_table (info)->dynobj; |
| 1545 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 1546 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 1547 | srel = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 1548 | BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); |
| 1549 | } |
| 1550 | |
| 1551 | srel->size += RELOC_EXT_SIZE; |
| 1552 | } |
| 1553 | |
| 1554 | continue; |
| 1555 | } |
| 1556 | |
| 1557 | /* At this point common symbols have already been allocated, so |
| 1558 | we don't have to worry about them. We need to consider that |
| 1559 | we may have already seen this symbol and marked it undefined; |
| 1560 | if the symbol is really undefined, then SUNOS_DEF_DYNAMIC |
| 1561 | will be zero. */ |
| 1562 | if (h->root.root.type != bfd_link_hash_defined |
| 1563 | && h->root.root.type != bfd_link_hash_defweak |
| 1564 | && h->root.root.type != bfd_link_hash_undefined) |
| 1565 | continue; |
| 1566 | |
| 1567 | if (r_type != RELOC_JMP_TBL |
| 1568 | && ! info->shared |
| 1569 | && ((h->flags & SUNOS_DEF_DYNAMIC) == 0 |
| 1570 | || (h->flags & SUNOS_DEF_REGULAR) != 0)) |
| 1571 | continue; |
| 1572 | |
| 1573 | if (r_type == RELOC_JMP_TBL |
| 1574 | && ! info->shared |
| 1575 | && (h->flags & SUNOS_DEF_DYNAMIC) == 0 |
| 1576 | && (h->flags & SUNOS_DEF_REGULAR) == 0) |
| 1577 | { |
| 1578 | /* This symbol is apparently undefined. Don't do anything |
| 1579 | here; just let the relocation routine report an undefined |
| 1580 | symbol. */ |
| 1581 | continue; |
| 1582 | } |
| 1583 | |
| 1584 | if (strcmp (h->root.root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0) |
| 1585 | continue; |
| 1586 | |
| 1587 | if (dynobj == NULL) |
| 1588 | { |
| 1589 | if (! sunos_create_dynamic_sections (abfd, info, FALSE)) |
| 1590 | return FALSE; |
| 1591 | dynobj = sunos_hash_table (info)->dynobj; |
| 1592 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 1593 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 1594 | srel = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 1595 | BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); |
| 1596 | |
| 1597 | /* Make sure we have an initial entry in the .got table. */ |
| 1598 | if (sgot->size == 0) |
| 1599 | sgot->size = BYTES_IN_WORD; |
| 1600 | sunos_hash_table (info)->got_needed = TRUE; |
| 1601 | } |
| 1602 | |
| 1603 | BFD_ASSERT (r_type == RELOC_JMP_TBL |
| 1604 | || info->shared |
| 1605 | || (h->flags & SUNOS_REF_REGULAR) != 0); |
| 1606 | BFD_ASSERT (r_type == RELOC_JMP_TBL |
| 1607 | || info->shared |
| 1608 | || h->plt_offset != 0 |
| 1609 | || ((h->root.root.type == bfd_link_hash_defined |
| 1610 | || h->root.root.type == bfd_link_hash_defweak) |
| 1611 | ? (h->root.root.u.def.section->owner->flags |
| 1612 | & DYNAMIC) != 0 |
| 1613 | : (h->root.root.u.undef.abfd->flags & DYNAMIC) != 0)); |
| 1614 | |
| 1615 | /* This reloc is against a symbol defined only by a dynamic |
| 1616 | object, or it is a jump table reloc from PIC compiled code. */ |
| 1617 | |
| 1618 | if (r_type != RELOC_JMP_TBL |
| 1619 | && h->root.root.type == bfd_link_hash_undefined) |
| 1620 | /* Presumably this symbol was marked as being undefined by |
| 1621 | an earlier reloc. */ |
| 1622 | srel->size += RELOC_EXT_SIZE; |
| 1623 | |
| 1624 | else if (r_type != RELOC_JMP_TBL |
| 1625 | && (h->root.root.u.def.section->flags & SEC_CODE) == 0) |
| 1626 | { |
| 1627 | bfd *sub; |
| 1628 | |
| 1629 | /* This reloc is not in the .text section. It must be |
| 1630 | copied into the dynamic relocs. We mark the symbol as |
| 1631 | being undefined. */ |
| 1632 | srel->size += RELOC_EXT_SIZE; |
| 1633 | if ((h->flags & SUNOS_DEF_REGULAR) == 0) |
| 1634 | { |
| 1635 | sub = h->root.root.u.def.section->owner; |
| 1636 | h->root.root.type = bfd_link_hash_undefined; |
| 1637 | h->root.root.u.undef.abfd = sub; |
| 1638 | } |
| 1639 | } |
| 1640 | else |
| 1641 | { |
| 1642 | /* This symbol is in the .text section. We must give it an |
| 1643 | entry in the procedure linkage table, if we have not |
| 1644 | already done so. We change the definition of the symbol |
| 1645 | to the .plt section; this will cause relocs against it to |
| 1646 | be handled correctly. */ |
| 1647 | if (h->plt_offset == 0) |
| 1648 | { |
| 1649 | if (splt->size == 0) |
| 1650 | splt->size = SPARC_PLT_ENTRY_SIZE; |
| 1651 | h->plt_offset = splt->size; |
| 1652 | |
| 1653 | if ((h->flags & SUNOS_DEF_REGULAR) == 0) |
| 1654 | { |
| 1655 | if (h->root.root.type == bfd_link_hash_undefined) |
| 1656 | h->root.root.type = bfd_link_hash_defined; |
| 1657 | h->root.root.u.def.section = splt; |
| 1658 | h->root.root.u.def.value = splt->size; |
| 1659 | } |
| 1660 | |
| 1661 | splt->size += SPARC_PLT_ENTRY_SIZE; |
| 1662 | |
| 1663 | /* We will also need a dynamic reloc entry, unless this |
| 1664 | is a JMP_TBL reloc produced by linking PIC compiled |
| 1665 | code, and we are not making a shared library. */ |
| 1666 | if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0) |
| 1667 | srel->size += RELOC_EXT_SIZE; |
| 1668 | } |
| 1669 | |
| 1670 | /* If we are creating a shared library, we need to copy over |
| 1671 | any reloc other than a jump table reloc. */ |
| 1672 | if (info->shared && r_type != RELOC_JMP_TBL) |
| 1673 | srel->size += RELOC_EXT_SIZE; |
| 1674 | } |
| 1675 | } |
| 1676 | |
| 1677 | return TRUE; |
| 1678 | } |
| 1679 | |
| 1680 | /* Scan the relocs for an input section. */ |
| 1681 | |
| 1682 | static bfd_boolean |
| 1683 | sunos_scan_relocs (struct bfd_link_info *info, |
| 1684 | bfd *abfd, |
| 1685 | asection *sec, |
| 1686 | bfd_size_type rel_size) |
| 1687 | { |
| 1688 | void * relocs; |
| 1689 | void * free_relocs = NULL; |
| 1690 | |
| 1691 | if (rel_size == 0) |
| 1692 | return TRUE; |
| 1693 | |
| 1694 | if (! info->keep_memory) |
| 1695 | relocs = free_relocs = bfd_malloc (rel_size); |
| 1696 | else |
| 1697 | { |
| 1698 | struct aout_section_data_struct *n; |
| 1699 | bfd_size_type amt = sizeof (struct aout_section_data_struct); |
| 1700 | |
| 1701 | n = bfd_alloc (abfd, amt); |
| 1702 | if (n == NULL) |
| 1703 | relocs = NULL; |
| 1704 | else |
| 1705 | { |
| 1706 | set_aout_section_data (sec, n); |
| 1707 | relocs = bfd_malloc (rel_size); |
| 1708 | aout_section_data (sec)->relocs = relocs; |
| 1709 | } |
| 1710 | } |
| 1711 | if (relocs == NULL) |
| 1712 | return FALSE; |
| 1713 | |
| 1714 | if (bfd_seek (abfd, sec->rel_filepos, SEEK_SET) != 0 |
| 1715 | || bfd_bread (relocs, rel_size, abfd) != rel_size) |
| 1716 | goto error_return; |
| 1717 | |
| 1718 | if (obj_reloc_entry_size (abfd) == RELOC_STD_SIZE) |
| 1719 | { |
| 1720 | if (! sunos_scan_std_relocs (info, abfd, sec, |
| 1721 | (struct reloc_std_external *) relocs, |
| 1722 | rel_size)) |
| 1723 | goto error_return; |
| 1724 | } |
| 1725 | else |
| 1726 | { |
| 1727 | if (! sunos_scan_ext_relocs (info, abfd, sec, |
| 1728 | (struct reloc_ext_external *) relocs, |
| 1729 | rel_size)) |
| 1730 | goto error_return; |
| 1731 | } |
| 1732 | |
| 1733 | if (free_relocs != NULL) |
| 1734 | free (free_relocs); |
| 1735 | |
| 1736 | return TRUE; |
| 1737 | |
| 1738 | error_return: |
| 1739 | if (free_relocs != NULL) |
| 1740 | free (free_relocs); |
| 1741 | return FALSE; |
| 1742 | } |
| 1743 | |
| 1744 | /* Build the hash table of dynamic symbols, and to mark as written all |
| 1745 | symbols from dynamic objects which we do not plan to write out. */ |
| 1746 | |
| 1747 | static bfd_boolean |
| 1748 | sunos_scan_dynamic_symbol (struct sunos_link_hash_entry *h, void * data) |
| 1749 | { |
| 1750 | struct bfd_link_info *info = (struct bfd_link_info *) data; |
| 1751 | |
| 1752 | if (h->root.root.type == bfd_link_hash_warning) |
| 1753 | h = (struct sunos_link_hash_entry *) h->root.root.u.i.link; |
| 1754 | |
| 1755 | /* Set the written flag for symbols we do not want to write out as |
| 1756 | part of the regular symbol table. This is all symbols which are |
| 1757 | not defined in a regular object file. For some reason symbols |
| 1758 | which are referenced by a regular object and defined by a dynamic |
| 1759 | object do not seem to show up in the regular symbol table. It is |
| 1760 | possible for a symbol to have only SUNOS_REF_REGULAR set here, it |
| 1761 | is an undefined symbol which was turned into a common symbol |
| 1762 | because it was found in an archive object which was not included |
| 1763 | in the link. */ |
| 1764 | if ((h->flags & SUNOS_DEF_REGULAR) == 0 |
| 1765 | && (h->flags & SUNOS_DEF_DYNAMIC) != 0 |
| 1766 | && strcmp (h->root.root.root.string, "__DYNAMIC") != 0) |
| 1767 | h->root.written = TRUE; |
| 1768 | |
| 1769 | /* If this symbol is defined by a dynamic object and referenced by a |
| 1770 | regular object, see whether we gave it a reasonable value while |
| 1771 | scanning the relocs. */ |
| 1772 | if ((h->flags & SUNOS_DEF_REGULAR) == 0 |
| 1773 | && (h->flags & SUNOS_DEF_DYNAMIC) != 0 |
| 1774 | && (h->flags & SUNOS_REF_REGULAR) != 0) |
| 1775 | { |
| 1776 | if ((h->root.root.type == bfd_link_hash_defined |
| 1777 | || h->root.root.type == bfd_link_hash_defweak) |
| 1778 | && ((h->root.root.u.def.section->owner->flags & DYNAMIC) != 0) |
| 1779 | && h->root.root.u.def.section->output_section == NULL) |
| 1780 | { |
| 1781 | bfd *sub; |
| 1782 | |
| 1783 | /* This symbol is currently defined in a dynamic section |
| 1784 | which is not being put into the output file. This |
| 1785 | implies that there is no reloc against the symbol. I'm |
| 1786 | not sure why this case would ever occur. In any case, we |
| 1787 | change the symbol to be undefined. */ |
| 1788 | sub = h->root.root.u.def.section->owner; |
| 1789 | h->root.root.type = bfd_link_hash_undefined; |
| 1790 | h->root.root.u.undef.abfd = sub; |
| 1791 | } |
| 1792 | } |
| 1793 | |
| 1794 | /* If this symbol is defined or referenced by a regular file, add it |
| 1795 | to the dynamic symbols. */ |
| 1796 | if ((h->flags & (SUNOS_DEF_REGULAR | SUNOS_REF_REGULAR)) != 0) |
| 1797 | { |
| 1798 | asection *s; |
| 1799 | size_t len; |
| 1800 | bfd_byte *contents; |
| 1801 | unsigned char *name; |
| 1802 | unsigned long hash; |
| 1803 | bfd *dynobj; |
| 1804 | |
| 1805 | BFD_ASSERT (h->dynindx == -2); |
| 1806 | |
| 1807 | dynobj = sunos_hash_table (info)->dynobj; |
| 1808 | |
| 1809 | h->dynindx = sunos_hash_table (info)->dynsymcount; |
| 1810 | ++sunos_hash_table (info)->dynsymcount; |
| 1811 | |
| 1812 | len = strlen (h->root.root.root.string); |
| 1813 | |
| 1814 | /* We don't bother to construct a BFD hash table for the strings |
| 1815 | which are the names of the dynamic symbols. Using a hash |
| 1816 | table for the regular symbols is beneficial, because the |
| 1817 | regular symbols includes the debugging symbols, which have |
| 1818 | long names and are often duplicated in several object files. |
| 1819 | There are no debugging symbols in the dynamic symbols. */ |
| 1820 | s = bfd_get_section_by_name (dynobj, ".dynstr"); |
| 1821 | BFD_ASSERT (s != NULL); |
| 1822 | contents = bfd_realloc (s->contents, s->size + len + 1); |
| 1823 | if (contents == NULL) |
| 1824 | return FALSE; |
| 1825 | s->contents = contents; |
| 1826 | |
| 1827 | h->dynstr_index = s->size; |
| 1828 | strcpy ((char *) contents + s->size, h->root.root.root.string); |
| 1829 | s->size += len + 1; |
| 1830 | |
| 1831 | /* Add it to the dynamic hash table. */ |
| 1832 | name = (unsigned char *) h->root.root.root.string; |
| 1833 | hash = 0; |
| 1834 | while (*name != '\0') |
| 1835 | hash = (hash << 1) + *name++; |
| 1836 | hash &= 0x7fffffff; |
| 1837 | hash %= sunos_hash_table (info)->bucketcount; |
| 1838 | |
| 1839 | s = bfd_get_section_by_name (dynobj, ".hash"); |
| 1840 | BFD_ASSERT (s != NULL); |
| 1841 | |
| 1842 | if (GET_SWORD (dynobj, s->contents + hash * HASH_ENTRY_SIZE) == -1) |
| 1843 | PUT_WORD (dynobj, h->dynindx, s->contents + hash * HASH_ENTRY_SIZE); |
| 1844 | else |
| 1845 | { |
| 1846 | bfd_vma next; |
| 1847 | |
| 1848 | next = GET_WORD (dynobj, |
| 1849 | (s->contents |
| 1850 | + hash * HASH_ENTRY_SIZE |
| 1851 | + BYTES_IN_WORD)); |
| 1852 | PUT_WORD (dynobj, s->size / HASH_ENTRY_SIZE, |
| 1853 | s->contents + hash * HASH_ENTRY_SIZE + BYTES_IN_WORD); |
| 1854 | PUT_WORD (dynobj, h->dynindx, s->contents + s->size); |
| 1855 | PUT_WORD (dynobj, next, s->contents + s->size + BYTES_IN_WORD); |
| 1856 | s->size += HASH_ENTRY_SIZE; |
| 1857 | } |
| 1858 | } |
| 1859 | |
| 1860 | return TRUE; |
| 1861 | } |
| 1862 | |
| 1863 | /* Set up the sizes and contents of the dynamic sections created in |
| 1864 | sunos_add_dynamic_symbols. This is called by the SunOS linker |
| 1865 | emulation before_allocation routine. We must set the sizes of the |
| 1866 | sections before the linker sets the addresses of the various |
| 1867 | sections. This unfortunately requires reading all the relocs so |
| 1868 | that we can work out which ones need to become dynamic relocs. If |
| 1869 | info->keep_memory is TRUE, we keep the relocs in memory; otherwise, |
| 1870 | we discard them, and will read them again later. */ |
| 1871 | |
| 1872 | bfd_boolean |
| 1873 | bfd_sunos_size_dynamic_sections (bfd *output_bfd, |
| 1874 | struct bfd_link_info *info, |
| 1875 | asection **sdynptr, |
| 1876 | asection **sneedptr, |
| 1877 | asection **srulesptr) |
| 1878 | { |
| 1879 | bfd *dynobj; |
| 1880 | bfd_size_type dynsymcount; |
| 1881 | struct sunos_link_hash_entry *h; |
| 1882 | asection *s; |
| 1883 | size_t bucketcount; |
| 1884 | bfd_size_type hashalloc; |
| 1885 | size_t i; |
| 1886 | bfd *sub; |
| 1887 | |
| 1888 | *sdynptr = NULL; |
| 1889 | *sneedptr = NULL; |
| 1890 | *srulesptr = NULL; |
| 1891 | |
| 1892 | if (info->relocatable) |
| 1893 | return TRUE; |
| 1894 | |
| 1895 | if (output_bfd->xvec != &MY(vec)) |
| 1896 | return TRUE; |
| 1897 | |
| 1898 | /* Look through all the input BFD's and read their relocs. It would |
| 1899 | be better if we didn't have to do this, but there is no other way |
| 1900 | to determine the number of dynamic relocs we need, and, more |
| 1901 | importantly, there is no other way to know which symbols should |
| 1902 | get an entry in the procedure linkage table. */ |
| 1903 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) |
| 1904 | { |
| 1905 | if ((sub->flags & DYNAMIC) == 0 |
| 1906 | && sub->xvec == output_bfd->xvec) |
| 1907 | { |
| 1908 | if (! sunos_scan_relocs (info, sub, obj_textsec (sub), |
| 1909 | exec_hdr (sub)->a_trsize) |
| 1910 | || ! sunos_scan_relocs (info, sub, obj_datasec (sub), |
| 1911 | exec_hdr (sub)->a_drsize)) |
| 1912 | return FALSE; |
| 1913 | } |
| 1914 | } |
| 1915 | |
| 1916 | dynobj = sunos_hash_table (info)->dynobj; |
| 1917 | dynsymcount = sunos_hash_table (info)->dynsymcount; |
| 1918 | |
| 1919 | /* If there were no dynamic objects in the link, and we don't need |
| 1920 | to build a global offset table, there is nothing to do here. */ |
| 1921 | if (! sunos_hash_table (info)->dynamic_sections_needed |
| 1922 | && ! sunos_hash_table (info)->got_needed) |
| 1923 | return TRUE; |
| 1924 | |
| 1925 | /* If __GLOBAL_OFFSET_TABLE_ was mentioned, define it. */ |
| 1926 | h = sunos_link_hash_lookup (sunos_hash_table (info), |
| 1927 | "__GLOBAL_OFFSET_TABLE_", FALSE, FALSE, FALSE); |
| 1928 | if (h != NULL && (h->flags & SUNOS_REF_REGULAR) != 0) |
| 1929 | { |
| 1930 | h->flags |= SUNOS_DEF_REGULAR; |
| 1931 | if (h->dynindx == -1) |
| 1932 | { |
| 1933 | ++sunos_hash_table (info)->dynsymcount; |
| 1934 | h->dynindx = -2; |
| 1935 | } |
| 1936 | h->root.root.type = bfd_link_hash_defined; |
| 1937 | h->root.root.u.def.section = bfd_get_section_by_name (dynobj, ".got"); |
| 1938 | |
| 1939 | /* If the .got section is more than 0x1000 bytes, we set |
| 1940 | __GLOBAL_OFFSET_TABLE_ to be 0x1000 bytes into the section, |
| 1941 | so that 13 bit relocations have a greater chance of working. */ |
| 1942 | s = bfd_get_section_by_name (dynobj, ".got"); |
| 1943 | BFD_ASSERT (s != NULL); |
| 1944 | if (s->size >= 0x1000) |
| 1945 | h->root.root.u.def.value = 0x1000; |
| 1946 | else |
| 1947 | h->root.root.u.def.value = 0; |
| 1948 | |
| 1949 | sunos_hash_table (info)->got_base = h->root.root.u.def.value; |
| 1950 | } |
| 1951 | |
| 1952 | /* If there are any shared objects in the link, then we need to set |
| 1953 | up the dynamic linking information. */ |
| 1954 | if (sunos_hash_table (info)->dynamic_sections_needed) |
| 1955 | { |
| 1956 | *sdynptr = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 1957 | |
| 1958 | /* The .dynamic section is always the same size. */ |
| 1959 | s = *sdynptr; |
| 1960 | BFD_ASSERT (s != NULL); |
| 1961 | s->size = (sizeof (struct external_sun4_dynamic) |
| 1962 | + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE |
| 1963 | + sizeof (struct external_sun4_dynamic_link)); |
| 1964 | |
| 1965 | /* Set the size of the .dynsym and .hash sections. We counted |
| 1966 | the number of dynamic symbols as we read the input files. We |
| 1967 | will build the dynamic symbol table (.dynsym) and the hash |
| 1968 | table (.hash) when we build the final symbol table, because |
| 1969 | until then we do not know the correct value to give the |
| 1970 | symbols. We build the dynamic symbol string table (.dynstr) |
| 1971 | in a traversal of the symbol table using |
| 1972 | sunos_scan_dynamic_symbol. */ |
| 1973 | s = bfd_get_section_by_name (dynobj, ".dynsym"); |
| 1974 | BFD_ASSERT (s != NULL); |
| 1975 | s->size = dynsymcount * sizeof (struct external_nlist); |
| 1976 | s->contents = bfd_alloc (output_bfd, s->size); |
| 1977 | if (s->contents == NULL && s->size != 0) |
| 1978 | return FALSE; |
| 1979 | |
| 1980 | /* The number of buckets is just the number of symbols divided |
| 1981 | by four. To compute the final size of the hash table, we |
| 1982 | must actually compute the hash table. Normally we need |
| 1983 | exactly as many entries in the hash table as there are |
| 1984 | dynamic symbols, but if some of the buckets are not used we |
| 1985 | will need additional entries. In the worst case, every |
| 1986 | symbol will hash to the same bucket, and we will need |
| 1987 | BUCKETCOUNT - 1 extra entries. */ |
| 1988 | if (dynsymcount >= 4) |
| 1989 | bucketcount = dynsymcount / 4; |
| 1990 | else if (dynsymcount > 0) |
| 1991 | bucketcount = dynsymcount; |
| 1992 | else |
| 1993 | bucketcount = 1; |
| 1994 | s = bfd_get_section_by_name (dynobj, ".hash"); |
| 1995 | BFD_ASSERT (s != NULL); |
| 1996 | hashalloc = (dynsymcount + bucketcount - 1) * HASH_ENTRY_SIZE; |
| 1997 | s->contents = bfd_zalloc (dynobj, hashalloc); |
| 1998 | if (s->contents == NULL && dynsymcount > 0) |
| 1999 | return FALSE; |
| 2000 | for (i = 0; i < bucketcount; i++) |
| 2001 | PUT_WORD (output_bfd, (bfd_vma) -1, s->contents + i * HASH_ENTRY_SIZE); |
| 2002 | s->size = bucketcount * HASH_ENTRY_SIZE; |
| 2003 | |
| 2004 | sunos_hash_table (info)->bucketcount = bucketcount; |
| 2005 | |
| 2006 | /* Scan all the symbols, place them in the dynamic symbol table, |
| 2007 | and build the dynamic hash table. We reuse dynsymcount as a |
| 2008 | counter for the number of symbols we have added so far. */ |
| 2009 | sunos_hash_table (info)->dynsymcount = 0; |
| 2010 | sunos_link_hash_traverse (sunos_hash_table (info), |
| 2011 | sunos_scan_dynamic_symbol, |
| 2012 | (void *) info); |
| 2013 | BFD_ASSERT (sunos_hash_table (info)->dynsymcount == dynsymcount); |
| 2014 | |
| 2015 | /* The SunOS native linker seems to align the total size of the |
| 2016 | symbol strings to a multiple of 8. I don't know if this is |
| 2017 | important, but it can't hurt much. */ |
| 2018 | s = bfd_get_section_by_name (dynobj, ".dynstr"); |
| 2019 | BFD_ASSERT (s != NULL); |
| 2020 | if ((s->size & 7) != 0) |
| 2021 | { |
| 2022 | bfd_size_type add; |
| 2023 | bfd_byte *contents; |
| 2024 | |
| 2025 | add = 8 - (s->size & 7); |
| 2026 | contents = bfd_realloc (s->contents, s->size + add); |
| 2027 | if (contents == NULL) |
| 2028 | return FALSE; |
| 2029 | memset (contents + s->size, 0, (size_t) add); |
| 2030 | s->contents = contents; |
| 2031 | s->size += add; |
| 2032 | } |
| 2033 | } |
| 2034 | |
| 2035 | /* Now that we have worked out the sizes of the procedure linkage |
| 2036 | table and the dynamic relocs, allocate storage for them. */ |
| 2037 | s = bfd_get_section_by_name (dynobj, ".plt"); |
| 2038 | BFD_ASSERT (s != NULL); |
| 2039 | if (s->size != 0) |
| 2040 | { |
| 2041 | s->contents = bfd_alloc (dynobj, s->size); |
| 2042 | if (s->contents == NULL) |
| 2043 | return FALSE; |
| 2044 | |
| 2045 | /* Fill in the first entry in the table. */ |
| 2046 | switch (bfd_get_arch (dynobj)) |
| 2047 | { |
| 2048 | case bfd_arch_sparc: |
| 2049 | memcpy (s->contents, sparc_plt_first_entry, SPARC_PLT_ENTRY_SIZE); |
| 2050 | break; |
| 2051 | |
| 2052 | case bfd_arch_m68k: |
| 2053 | memcpy (s->contents, m68k_plt_first_entry, M68K_PLT_ENTRY_SIZE); |
| 2054 | break; |
| 2055 | |
| 2056 | default: |
| 2057 | abort (); |
| 2058 | } |
| 2059 | } |
| 2060 | |
| 2061 | s = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 2062 | if (s->size != 0) |
| 2063 | { |
| 2064 | s->contents = bfd_alloc (dynobj, s->size); |
| 2065 | if (s->contents == NULL) |
| 2066 | return FALSE; |
| 2067 | } |
| 2068 | /* We use the reloc_count field to keep track of how many of the |
| 2069 | relocs we have output so far. */ |
| 2070 | s->reloc_count = 0; |
| 2071 | |
| 2072 | /* Make space for the global offset table. */ |
| 2073 | s = bfd_get_section_by_name (dynobj, ".got"); |
| 2074 | s->contents = bfd_alloc (dynobj, s->size); |
| 2075 | if (s->contents == NULL) |
| 2076 | return FALSE; |
| 2077 | |
| 2078 | *sneedptr = bfd_get_section_by_name (dynobj, ".need"); |
| 2079 | *srulesptr = bfd_get_section_by_name (dynobj, ".rules"); |
| 2080 | |
| 2081 | return TRUE; |
| 2082 | } |
| 2083 | |
| 2084 | /* Link a dynamic object. We actually don't have anything to do at |
| 2085 | this point. This entry point exists to prevent the regular linker |
| 2086 | code from doing anything with the object. */ |
| 2087 | |
| 2088 | static bfd_boolean |
| 2089 | sunos_link_dynamic_object (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 2090 | bfd *abfd ATTRIBUTE_UNUSED) |
| 2091 | { |
| 2092 | return TRUE; |
| 2093 | } |
| 2094 | |
| 2095 | /* Write out a dynamic symbol. This is called by the final traversal |
| 2096 | over the symbol table. */ |
| 2097 | |
| 2098 | static bfd_boolean |
| 2099 | sunos_write_dynamic_symbol (bfd *output_bfd, |
| 2100 | struct bfd_link_info *info, |
| 2101 | struct aout_link_hash_entry *harg) |
| 2102 | { |
| 2103 | struct sunos_link_hash_entry *h = (struct sunos_link_hash_entry *) harg; |
| 2104 | int type; |
| 2105 | bfd_vma val; |
| 2106 | asection *s; |
| 2107 | struct external_nlist *outsym; |
| 2108 | |
| 2109 | /* If this symbol is in the procedure linkage table, fill in the |
| 2110 | table entry. */ |
| 2111 | if (h->plt_offset != 0) |
| 2112 | { |
| 2113 | bfd *dynobj; |
| 2114 | asection *splt; |
| 2115 | bfd_byte *p; |
| 2116 | bfd_vma r_address; |
| 2117 | |
| 2118 | dynobj = sunos_hash_table (info)->dynobj; |
| 2119 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 2120 | p = splt->contents + h->plt_offset; |
| 2121 | |
| 2122 | s = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 2123 | |
| 2124 | r_address = (splt->output_section->vma |
| 2125 | + splt->output_offset |
| 2126 | + h->plt_offset); |
| 2127 | |
| 2128 | switch (bfd_get_arch (output_bfd)) |
| 2129 | { |
| 2130 | case bfd_arch_sparc: |
| 2131 | if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0) |
| 2132 | { |
| 2133 | bfd_put_32 (output_bfd, SPARC_PLT_ENTRY_WORD0, p); |
| 2134 | bfd_put_32 (output_bfd, |
| 2135 | (SPARC_PLT_ENTRY_WORD1 |
| 2136 | + (((- (h->plt_offset + 4) >> 2) |
| 2137 | & 0x3fffffff))), |
| 2138 | p + 4); |
| 2139 | bfd_put_32 (output_bfd, SPARC_PLT_ENTRY_WORD2 + s->reloc_count, |
| 2140 | p + 8); |
| 2141 | } |
| 2142 | else |
| 2143 | { |
| 2144 | val = (h->root.root.u.def.section->output_section->vma |
| 2145 | + h->root.root.u.def.section->output_offset |
| 2146 | + h->root.root.u.def.value); |
| 2147 | bfd_put_32 (output_bfd, |
| 2148 | SPARC_PLT_PIC_WORD0 + ((val >> 10) & 0x3fffff), |
| 2149 | p); |
| 2150 | bfd_put_32 (output_bfd, |
| 2151 | SPARC_PLT_PIC_WORD1 + (val & 0x3ff), |
| 2152 | p + 4); |
| 2153 | bfd_put_32 (output_bfd, SPARC_PLT_PIC_WORD2, p + 8); |
| 2154 | } |
| 2155 | break; |
| 2156 | |
| 2157 | case bfd_arch_m68k: |
| 2158 | if (! info->shared && (h->flags & SUNOS_DEF_REGULAR) != 0) |
| 2159 | abort (); |
| 2160 | bfd_put_16 (output_bfd, M68K_PLT_ENTRY_WORD0, p); |
| 2161 | bfd_put_32 (output_bfd, (- (h->plt_offset + 2)), p + 2); |
| 2162 | bfd_put_16 (output_bfd, (bfd_vma) s->reloc_count, p + 6); |
| 2163 | r_address += 2; |
| 2164 | break; |
| 2165 | |
| 2166 | default: |
| 2167 | abort (); |
| 2168 | } |
| 2169 | |
| 2170 | /* We also need to add a jump table reloc, unless this is the |
| 2171 | result of a JMP_TBL reloc from PIC compiled code. */ |
| 2172 | if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0) |
| 2173 | { |
| 2174 | BFD_ASSERT (h->dynindx >= 0); |
| 2175 | BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) |
| 2176 | < s->size); |
| 2177 | p = s->contents + s->reloc_count * obj_reloc_entry_size (output_bfd); |
| 2178 | if (obj_reloc_entry_size (output_bfd) == RELOC_STD_SIZE) |
| 2179 | { |
| 2180 | struct reloc_std_external *srel; |
| 2181 | |
| 2182 | srel = (struct reloc_std_external *) p; |
| 2183 | PUT_WORD (output_bfd, r_address, srel->r_address); |
| 2184 | if (bfd_header_big_endian (output_bfd)) |
| 2185 | { |
| 2186 | srel->r_index[0] = (bfd_byte) (h->dynindx >> 16); |
| 2187 | srel->r_index[1] = (bfd_byte) (h->dynindx >> 8); |
| 2188 | srel->r_index[2] = (bfd_byte) (h->dynindx); |
| 2189 | srel->r_type[0] = (RELOC_STD_BITS_EXTERN_BIG |
| 2190 | | RELOC_STD_BITS_JMPTABLE_BIG); |
| 2191 | } |
| 2192 | else |
| 2193 | { |
| 2194 | srel->r_index[2] = (bfd_byte) (h->dynindx >> 16); |
| 2195 | srel->r_index[1] = (bfd_byte) (h->dynindx >> 8); |
| 2196 | srel->r_index[0] = (bfd_byte)h->dynindx; |
| 2197 | srel->r_type[0] = (RELOC_STD_BITS_EXTERN_LITTLE |
| 2198 | | RELOC_STD_BITS_JMPTABLE_LITTLE); |
| 2199 | } |
| 2200 | } |
| 2201 | else |
| 2202 | { |
| 2203 | struct reloc_ext_external *erel; |
| 2204 | |
| 2205 | erel = (struct reloc_ext_external *) p; |
| 2206 | PUT_WORD (output_bfd, r_address, erel->r_address); |
| 2207 | if (bfd_header_big_endian (output_bfd)) |
| 2208 | { |
| 2209 | erel->r_index[0] = (bfd_byte) (h->dynindx >> 16); |
| 2210 | erel->r_index[1] = (bfd_byte) (h->dynindx >> 8); |
| 2211 | erel->r_index[2] = (bfd_byte)h->dynindx; |
| 2212 | erel->r_type[0] = |
| 2213 | (RELOC_EXT_BITS_EXTERN_BIG |
| 2214 | | (RELOC_JMP_SLOT << RELOC_EXT_BITS_TYPE_SH_BIG)); |
| 2215 | } |
| 2216 | else |
| 2217 | { |
| 2218 | erel->r_index[2] = (bfd_byte) (h->dynindx >> 16); |
| 2219 | erel->r_index[1] = (bfd_byte) (h->dynindx >> 8); |
| 2220 | erel->r_index[0] = (bfd_byte)h->dynindx; |
| 2221 | erel->r_type[0] = |
| 2222 | (RELOC_EXT_BITS_EXTERN_LITTLE |
| 2223 | | (RELOC_JMP_SLOT << RELOC_EXT_BITS_TYPE_SH_LITTLE)); |
| 2224 | } |
| 2225 | PUT_WORD (output_bfd, (bfd_vma) 0, erel->r_addend); |
| 2226 | } |
| 2227 | |
| 2228 | ++s->reloc_count; |
| 2229 | } |
| 2230 | } |
| 2231 | |
| 2232 | /* If this is not a dynamic symbol, we don't have to do anything |
| 2233 | else. We only check this after handling the PLT entry, because |
| 2234 | we can have a PLT entry for a nondynamic symbol when linking PIC |
| 2235 | compiled code from a regular object. */ |
| 2236 | if (h->dynindx < 0) |
| 2237 | return TRUE; |
| 2238 | |
| 2239 | switch (h->root.root.type) |
| 2240 | { |
| 2241 | default: |
| 2242 | case bfd_link_hash_new: |
| 2243 | abort (); |
| 2244 | /* Avoid variable not initialized warnings. */ |
| 2245 | return TRUE; |
| 2246 | case bfd_link_hash_undefined: |
| 2247 | type = N_UNDF | N_EXT; |
| 2248 | val = 0; |
| 2249 | break; |
| 2250 | case bfd_link_hash_defined: |
| 2251 | case bfd_link_hash_defweak: |
| 2252 | { |
| 2253 | asection *sec; |
| 2254 | asection *output_section; |
| 2255 | |
| 2256 | sec = h->root.root.u.def.section; |
| 2257 | output_section = sec->output_section; |
| 2258 | BFD_ASSERT (bfd_is_abs_section (output_section) |
| 2259 | || output_section->owner == output_bfd); |
| 2260 | if (h->plt_offset != 0 |
| 2261 | && (h->flags & SUNOS_DEF_REGULAR) == 0) |
| 2262 | { |
| 2263 | type = N_UNDF | N_EXT; |
| 2264 | val = 0; |
| 2265 | } |
| 2266 | else |
| 2267 | { |
| 2268 | if (output_section == obj_textsec (output_bfd)) |
| 2269 | type = (h->root.root.type == bfd_link_hash_defined |
| 2270 | ? N_TEXT |
| 2271 | : N_WEAKT); |
| 2272 | else if (output_section == obj_datasec (output_bfd)) |
| 2273 | type = (h->root.root.type == bfd_link_hash_defined |
| 2274 | ? N_DATA |
| 2275 | : N_WEAKD); |
| 2276 | else if (output_section == obj_bsssec (output_bfd)) |
| 2277 | type = (h->root.root.type == bfd_link_hash_defined |
| 2278 | ? N_BSS |
| 2279 | : N_WEAKB); |
| 2280 | else |
| 2281 | type = (h->root.root.type == bfd_link_hash_defined |
| 2282 | ? N_ABS |
| 2283 | : N_WEAKA); |
| 2284 | type |= N_EXT; |
| 2285 | val = (h->root.root.u.def.value |
| 2286 | + output_section->vma |
| 2287 | + sec->output_offset); |
| 2288 | } |
| 2289 | } |
| 2290 | break; |
| 2291 | case bfd_link_hash_common: |
| 2292 | type = N_UNDF | N_EXT; |
| 2293 | val = h->root.root.u.c.size; |
| 2294 | break; |
| 2295 | case bfd_link_hash_undefweak: |
| 2296 | type = N_WEAKU; |
| 2297 | val = 0; |
| 2298 | break; |
| 2299 | case bfd_link_hash_indirect: |
| 2300 | case bfd_link_hash_warning: |
| 2301 | /* FIXME: Ignore these for now. The circumstances under which |
| 2302 | they should be written out are not clear to me. */ |
| 2303 | return TRUE; |
| 2304 | } |
| 2305 | |
| 2306 | s = bfd_get_section_by_name (sunos_hash_table (info)->dynobj, ".dynsym"); |
| 2307 | BFD_ASSERT (s != NULL); |
| 2308 | outsym = ((struct external_nlist *) |
| 2309 | (s->contents + h->dynindx * EXTERNAL_NLIST_SIZE)); |
| 2310 | |
| 2311 | H_PUT_8 (output_bfd, type, outsym->e_type); |
| 2312 | H_PUT_8 (output_bfd, 0, outsym->e_other); |
| 2313 | |
| 2314 | /* FIXME: The native linker doesn't use 0 for desc. It seems to use |
| 2315 | one less than the desc value in the shared library, although that |
| 2316 | seems unlikely. */ |
| 2317 | H_PUT_16 (output_bfd, 0, outsym->e_desc); |
| 2318 | |
| 2319 | PUT_WORD (output_bfd, h->dynstr_index, outsym->e_strx); |
| 2320 | PUT_WORD (output_bfd, val, outsym->e_value); |
| 2321 | |
| 2322 | return TRUE; |
| 2323 | } |
| 2324 | |
| 2325 | /* This is called for each reloc against an external symbol. If this |
| 2326 | is a reloc which are are going to copy as a dynamic reloc, then |
| 2327 | copy it over, and tell the caller to not bother processing this |
| 2328 | reloc. */ |
| 2329 | |
| 2330 | static bfd_boolean |
| 2331 | sunos_check_dynamic_reloc (struct bfd_link_info *info, |
| 2332 | bfd *input_bfd, |
| 2333 | asection *input_section, |
| 2334 | struct aout_link_hash_entry *harg, |
| 2335 | void * reloc, |
| 2336 | bfd_byte *contents ATTRIBUTE_UNUSED, |
| 2337 | bfd_boolean *skip, |
| 2338 | bfd_vma *relocationp) |
| 2339 | { |
| 2340 | struct sunos_link_hash_entry *h = (struct sunos_link_hash_entry *) harg; |
| 2341 | bfd *dynobj; |
| 2342 | bfd_boolean baserel; |
| 2343 | bfd_boolean jmptbl; |
| 2344 | bfd_boolean pcrel; |
| 2345 | asection *s; |
| 2346 | bfd_byte *p; |
| 2347 | long indx; |
| 2348 | |
| 2349 | *skip = FALSE; |
| 2350 | |
| 2351 | dynobj = sunos_hash_table (info)->dynobj; |
| 2352 | |
| 2353 | if (h != NULL |
| 2354 | && h->plt_offset != 0 |
| 2355 | && (info->shared |
| 2356 | || (h->flags & SUNOS_DEF_REGULAR) == 0)) |
| 2357 | { |
| 2358 | asection *splt; |
| 2359 | |
| 2360 | /* Redirect the relocation to the PLT entry. */ |
| 2361 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 2362 | *relocationp = (splt->output_section->vma |
| 2363 | + splt->output_offset |
| 2364 | + h->plt_offset); |
| 2365 | } |
| 2366 | |
| 2367 | if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) |
| 2368 | { |
| 2369 | struct reloc_std_external *srel; |
| 2370 | |
| 2371 | srel = (struct reloc_std_external *) reloc; |
| 2372 | if (bfd_header_big_endian (input_bfd)) |
| 2373 | { |
| 2374 | baserel = (0 != (srel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); |
| 2375 | jmptbl = (0 != (srel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); |
| 2376 | pcrel = (0 != (srel->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); |
| 2377 | } |
| 2378 | else |
| 2379 | { |
| 2380 | baserel = (0 != (srel->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); |
| 2381 | jmptbl = (0 != (srel->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); |
| 2382 | pcrel = (0 != (srel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); |
| 2383 | } |
| 2384 | } |
| 2385 | else |
| 2386 | { |
| 2387 | struct reloc_ext_external *erel; |
| 2388 | int r_type; |
| 2389 | |
| 2390 | erel = (struct reloc_ext_external *) reloc; |
| 2391 | if (bfd_header_big_endian (input_bfd)) |
| 2392 | r_type = ((erel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) |
| 2393 | >> RELOC_EXT_BITS_TYPE_SH_BIG); |
| 2394 | else |
| 2395 | r_type = ((erel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) |
| 2396 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); |
| 2397 | baserel = (r_type == RELOC_BASE10 |
| 2398 | || r_type == RELOC_BASE13 |
| 2399 | || r_type == RELOC_BASE22); |
| 2400 | jmptbl = r_type == RELOC_JMP_TBL; |
| 2401 | pcrel = (r_type == RELOC_DISP8 |
| 2402 | || r_type == RELOC_DISP16 |
| 2403 | || r_type == RELOC_DISP32 |
| 2404 | || r_type == RELOC_WDISP30 |
| 2405 | || r_type == RELOC_WDISP22); |
| 2406 | /* We don't consider the PC10 and PC22 types to be PC relative, |
| 2407 | because they are pcrel_offset. */ |
| 2408 | } |
| 2409 | |
| 2410 | if (baserel) |
| 2411 | { |
| 2412 | bfd_vma *got_offsetp; |
| 2413 | asection *sgot; |
| 2414 | |
| 2415 | if (h != NULL) |
| 2416 | got_offsetp = &h->got_offset; |
| 2417 | else if (adata (input_bfd).local_got_offsets == NULL) |
| 2418 | got_offsetp = NULL; |
| 2419 | else |
| 2420 | { |
| 2421 | struct reloc_std_external *srel; |
| 2422 | int r_index; |
| 2423 | |
| 2424 | srel = (struct reloc_std_external *) reloc; |
| 2425 | if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) |
| 2426 | { |
| 2427 | if (bfd_header_big_endian (input_bfd)) |
| 2428 | r_index = ((srel->r_index[0] << 16) |
| 2429 | | (srel->r_index[1] << 8) |
| 2430 | | srel->r_index[2]); |
| 2431 | else |
| 2432 | r_index = ((srel->r_index[2] << 16) |
| 2433 | | (srel->r_index[1] << 8) |
| 2434 | | srel->r_index[0]); |
| 2435 | } |
| 2436 | else |
| 2437 | { |
| 2438 | struct reloc_ext_external *erel; |
| 2439 | |
| 2440 | erel = (struct reloc_ext_external *) reloc; |
| 2441 | if (bfd_header_big_endian (input_bfd)) |
| 2442 | r_index = ((erel->r_index[0] << 16) |
| 2443 | | (erel->r_index[1] << 8) |
| 2444 | | erel->r_index[2]); |
| 2445 | else |
| 2446 | r_index = ((erel->r_index[2] << 16) |
| 2447 | | (erel->r_index[1] << 8) |
| 2448 | | erel->r_index[0]); |
| 2449 | } |
| 2450 | |
| 2451 | got_offsetp = adata (input_bfd).local_got_offsets + r_index; |
| 2452 | } |
| 2453 | |
| 2454 | BFD_ASSERT (got_offsetp != NULL && *got_offsetp != 0); |
| 2455 | |
| 2456 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 2457 | |
| 2458 | /* We set the least significant bit to indicate whether we have |
| 2459 | already initialized the GOT entry. */ |
| 2460 | if ((*got_offsetp & 1) == 0) |
| 2461 | { |
| 2462 | if (h == NULL |
| 2463 | || (! info->shared |
| 2464 | && ((h->flags & SUNOS_DEF_DYNAMIC) == 0 |
| 2465 | || (h->flags & SUNOS_DEF_REGULAR) != 0))) |
| 2466 | PUT_WORD (dynobj, *relocationp, sgot->contents + *got_offsetp); |
| 2467 | else |
| 2468 | PUT_WORD (dynobj, 0, sgot->contents + *got_offsetp); |
| 2469 | |
| 2470 | if (info->shared |
| 2471 | || (h != NULL |
| 2472 | && (h->flags & SUNOS_DEF_DYNAMIC) != 0 |
| 2473 | && (h->flags & SUNOS_DEF_REGULAR) == 0)) |
| 2474 | { |
| 2475 | /* We need to create a GLOB_DAT or 32 reloc to tell the |
| 2476 | dynamic linker to fill in this entry in the table. */ |
| 2477 | |
| 2478 | s = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 2479 | BFD_ASSERT (s != NULL); |
| 2480 | BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) |
| 2481 | < s->size); |
| 2482 | |
| 2483 | p = (s->contents |
| 2484 | + s->reloc_count * obj_reloc_entry_size (dynobj)); |
| 2485 | |
| 2486 | if (h != NULL) |
| 2487 | indx = h->dynindx; |
| 2488 | else |
| 2489 | indx = 0; |
| 2490 | |
| 2491 | if (obj_reloc_entry_size (dynobj) == RELOC_STD_SIZE) |
| 2492 | { |
| 2493 | struct reloc_std_external *srel; |
| 2494 | |
| 2495 | srel = (struct reloc_std_external *) p; |
| 2496 | PUT_WORD (dynobj, |
| 2497 | (*got_offsetp |
| 2498 | + sgot->output_section->vma |
| 2499 | + sgot->output_offset), |
| 2500 | srel->r_address); |
| 2501 | if (bfd_header_big_endian (dynobj)) |
| 2502 | { |
| 2503 | srel->r_index[0] = (bfd_byte) (indx >> 16); |
| 2504 | srel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2505 | srel->r_index[2] = (bfd_byte)indx; |
| 2506 | if (h == NULL) |
| 2507 | srel->r_type[0] = 2 << RELOC_STD_BITS_LENGTH_SH_BIG; |
| 2508 | else |
| 2509 | srel->r_type[0] = |
| 2510 | (RELOC_STD_BITS_EXTERN_BIG |
| 2511 | | RELOC_STD_BITS_BASEREL_BIG |
| 2512 | | RELOC_STD_BITS_RELATIVE_BIG |
| 2513 | | (2 << RELOC_STD_BITS_LENGTH_SH_BIG)); |
| 2514 | } |
| 2515 | else |
| 2516 | { |
| 2517 | srel->r_index[2] = (bfd_byte) (indx >> 16); |
| 2518 | srel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2519 | srel->r_index[0] = (bfd_byte)indx; |
| 2520 | if (h == NULL) |
| 2521 | srel->r_type[0] = 2 << RELOC_STD_BITS_LENGTH_SH_LITTLE; |
| 2522 | else |
| 2523 | srel->r_type[0] = |
| 2524 | (RELOC_STD_BITS_EXTERN_LITTLE |
| 2525 | | RELOC_STD_BITS_BASEREL_LITTLE |
| 2526 | | RELOC_STD_BITS_RELATIVE_LITTLE |
| 2527 | | (2 << RELOC_STD_BITS_LENGTH_SH_LITTLE)); |
| 2528 | } |
| 2529 | } |
| 2530 | else |
| 2531 | { |
| 2532 | struct reloc_ext_external *erel; |
| 2533 | |
| 2534 | erel = (struct reloc_ext_external *) p; |
| 2535 | PUT_WORD (dynobj, |
| 2536 | (*got_offsetp |
| 2537 | + sgot->output_section->vma |
| 2538 | + sgot->output_offset), |
| 2539 | erel->r_address); |
| 2540 | if (bfd_header_big_endian (dynobj)) |
| 2541 | { |
| 2542 | erel->r_index[0] = (bfd_byte) (indx >> 16); |
| 2543 | erel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2544 | erel->r_index[2] = (bfd_byte)indx; |
| 2545 | if (h == NULL) |
| 2546 | erel->r_type[0] = |
| 2547 | RELOC_32 << RELOC_EXT_BITS_TYPE_SH_BIG; |
| 2548 | else |
| 2549 | erel->r_type[0] = |
| 2550 | (RELOC_EXT_BITS_EXTERN_BIG |
| 2551 | | (RELOC_GLOB_DAT << RELOC_EXT_BITS_TYPE_SH_BIG)); |
| 2552 | } |
| 2553 | else |
| 2554 | { |
| 2555 | erel->r_index[2] = (bfd_byte) (indx >> 16); |
| 2556 | erel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2557 | erel->r_index[0] = (bfd_byte)indx; |
| 2558 | if (h == NULL) |
| 2559 | erel->r_type[0] = |
| 2560 | RELOC_32 << RELOC_EXT_BITS_TYPE_SH_LITTLE; |
| 2561 | else |
| 2562 | erel->r_type[0] = |
| 2563 | (RELOC_EXT_BITS_EXTERN_LITTLE |
| 2564 | | (RELOC_GLOB_DAT |
| 2565 | << RELOC_EXT_BITS_TYPE_SH_LITTLE)); |
| 2566 | } |
| 2567 | PUT_WORD (dynobj, 0, erel->r_addend); |
| 2568 | } |
| 2569 | |
| 2570 | ++s->reloc_count; |
| 2571 | } |
| 2572 | |
| 2573 | *got_offsetp |= 1; |
| 2574 | } |
| 2575 | |
| 2576 | *relocationp = (sgot->vma |
| 2577 | + (*got_offsetp &~ (bfd_vma) 1) |
| 2578 | - sunos_hash_table (info)->got_base); |
| 2579 | |
| 2580 | /* There is nothing else to do for a base relative reloc. */ |
| 2581 | return TRUE; |
| 2582 | } |
| 2583 | |
| 2584 | if (! sunos_hash_table (info)->dynamic_sections_needed) |
| 2585 | return TRUE; |
| 2586 | if (! info->shared) |
| 2587 | { |
| 2588 | if (h == NULL |
| 2589 | || h->dynindx == -1 |
| 2590 | || h->root.root.type != bfd_link_hash_undefined |
| 2591 | || (h->flags & SUNOS_DEF_REGULAR) != 0 |
| 2592 | || (h->flags & SUNOS_DEF_DYNAMIC) == 0 |
| 2593 | || (h->root.root.u.undef.abfd->flags & DYNAMIC) == 0) |
| 2594 | return TRUE; |
| 2595 | } |
| 2596 | else |
| 2597 | { |
| 2598 | if (h != NULL |
| 2599 | && (h->dynindx == -1 |
| 2600 | || jmptbl |
| 2601 | || strcmp (h->root.root.root.string, |
| 2602 | "__GLOBAL_OFFSET_TABLE_") == 0)) |
| 2603 | return TRUE; |
| 2604 | } |
| 2605 | |
| 2606 | /* It looks like this is a reloc we are supposed to copy. */ |
| 2607 | |
| 2608 | s = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 2609 | BFD_ASSERT (s != NULL); |
| 2610 | BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) < s->size); |
| 2611 | |
| 2612 | p = s->contents + s->reloc_count * obj_reloc_entry_size (dynobj); |
| 2613 | |
| 2614 | /* Copy the reloc over. */ |
| 2615 | memcpy (p, reloc, obj_reloc_entry_size (dynobj)); |
| 2616 | |
| 2617 | if (h != NULL) |
| 2618 | indx = h->dynindx; |
| 2619 | else |
| 2620 | indx = 0; |
| 2621 | |
| 2622 | /* Adjust the address and symbol index. */ |
| 2623 | if (obj_reloc_entry_size (dynobj) == RELOC_STD_SIZE) |
| 2624 | { |
| 2625 | struct reloc_std_external *srel; |
| 2626 | |
| 2627 | srel = (struct reloc_std_external *) p; |
| 2628 | PUT_WORD (dynobj, |
| 2629 | (GET_WORD (dynobj, srel->r_address) |
| 2630 | + input_section->output_section->vma |
| 2631 | + input_section->output_offset), |
| 2632 | srel->r_address); |
| 2633 | if (bfd_header_big_endian (dynobj)) |
| 2634 | { |
| 2635 | srel->r_index[0] = (bfd_byte) (indx >> 16); |
| 2636 | srel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2637 | srel->r_index[2] = (bfd_byte)indx; |
| 2638 | } |
| 2639 | else |
| 2640 | { |
| 2641 | srel->r_index[2] = (bfd_byte) (indx >> 16); |
| 2642 | srel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2643 | srel->r_index[0] = (bfd_byte)indx; |
| 2644 | } |
| 2645 | /* FIXME: We may have to change the addend for a PC relative |
| 2646 | reloc. */ |
| 2647 | } |
| 2648 | else |
| 2649 | { |
| 2650 | struct reloc_ext_external *erel; |
| 2651 | |
| 2652 | erel = (struct reloc_ext_external *) p; |
| 2653 | PUT_WORD (dynobj, |
| 2654 | (GET_WORD (dynobj, erel->r_address) |
| 2655 | + input_section->output_section->vma |
| 2656 | + input_section->output_offset), |
| 2657 | erel->r_address); |
| 2658 | if (bfd_header_big_endian (dynobj)) |
| 2659 | { |
| 2660 | erel->r_index[0] = (bfd_byte) (indx >> 16); |
| 2661 | erel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2662 | erel->r_index[2] = (bfd_byte)indx; |
| 2663 | } |
| 2664 | else |
| 2665 | { |
| 2666 | erel->r_index[2] = (bfd_byte) (indx >> 16); |
| 2667 | erel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2668 | erel->r_index[0] = (bfd_byte)indx; |
| 2669 | } |
| 2670 | if (pcrel && h != NULL) |
| 2671 | { |
| 2672 | /* Adjust the addend for the change in address. */ |
| 2673 | PUT_WORD (dynobj, |
| 2674 | (GET_WORD (dynobj, erel->r_addend) |
| 2675 | - (input_section->output_section->vma |
| 2676 | + input_section->output_offset |
| 2677 | - input_section->vma)), |
| 2678 | erel->r_addend); |
| 2679 | } |
| 2680 | } |
| 2681 | |
| 2682 | ++s->reloc_count; |
| 2683 | |
| 2684 | if (h != NULL) |
| 2685 | *skip = TRUE; |
| 2686 | |
| 2687 | return TRUE; |
| 2688 | } |
| 2689 | |
| 2690 | /* Finish up the dynamic linking information. */ |
| 2691 | |
| 2692 | static bfd_boolean |
| 2693 | sunos_finish_dynamic_link (bfd *abfd, struct bfd_link_info *info) |
| 2694 | { |
| 2695 | bfd *dynobj; |
| 2696 | asection *o; |
| 2697 | asection *s; |
| 2698 | asection *sdyn; |
| 2699 | |
| 2700 | if (! sunos_hash_table (info)->dynamic_sections_needed |
| 2701 | && ! sunos_hash_table (info)->got_needed) |
| 2702 | return TRUE; |
| 2703 | |
| 2704 | dynobj = sunos_hash_table (info)->dynobj; |
| 2705 | |
| 2706 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 2707 | BFD_ASSERT (sdyn != NULL); |
| 2708 | |
| 2709 | /* Finish up the .need section. The linker emulation code filled it |
| 2710 | in, but with offsets from the start of the section instead of |
| 2711 | real addresses. Now that we know the section location, we can |
| 2712 | fill in the final values. */ |
| 2713 | s = bfd_get_section_by_name (dynobj, ".need"); |
| 2714 | if (s != NULL && s->size != 0) |
| 2715 | { |
| 2716 | file_ptr filepos; |
| 2717 | bfd_byte *p; |
| 2718 | |
| 2719 | filepos = s->output_section->filepos + s->output_offset; |
| 2720 | p = s->contents; |
| 2721 | while (1) |
| 2722 | { |
| 2723 | bfd_vma val; |
| 2724 | |
| 2725 | PUT_WORD (dynobj, GET_WORD (dynobj, p) + filepos, p); |
| 2726 | val = GET_WORD (dynobj, p + 12); |
| 2727 | if (val == 0) |
| 2728 | break; |
| 2729 | PUT_WORD (dynobj, val + filepos, p + 12); |
| 2730 | p += 16; |
| 2731 | } |
| 2732 | } |
| 2733 | |
| 2734 | /* The first entry in the .got section is the address of the |
| 2735 | dynamic information, unless this is a shared library. */ |
| 2736 | s = bfd_get_section_by_name (dynobj, ".got"); |
| 2737 | BFD_ASSERT (s != NULL); |
| 2738 | if (info->shared || sdyn->size == 0) |
| 2739 | PUT_WORD (dynobj, 0, s->contents); |
| 2740 | else |
| 2741 | PUT_WORD (dynobj, sdyn->output_section->vma + sdyn->output_offset, |
| 2742 | s->contents); |
| 2743 | |
| 2744 | for (o = dynobj->sections; o != NULL; o = o->next) |
| 2745 | { |
| 2746 | if ((o->flags & SEC_HAS_CONTENTS) != 0 |
| 2747 | && o->contents != NULL) |
| 2748 | { |
| 2749 | BFD_ASSERT (o->output_section != NULL |
| 2750 | && o->output_section->owner == abfd); |
| 2751 | if (! bfd_set_section_contents (abfd, o->output_section, |
| 2752 | o->contents, |
| 2753 | (file_ptr) o->output_offset, |
| 2754 | o->size)) |
| 2755 | return FALSE; |
| 2756 | } |
| 2757 | } |
| 2758 | |
| 2759 | if (sdyn->size > 0) |
| 2760 | { |
| 2761 | struct external_sun4_dynamic esd; |
| 2762 | struct external_sun4_dynamic_link esdl; |
| 2763 | file_ptr pos; |
| 2764 | |
| 2765 | /* Finish up the dynamic link information. */ |
| 2766 | PUT_WORD (dynobj, (bfd_vma) 3, esd.ld_version); |
| 2767 | PUT_WORD (dynobj, |
| 2768 | sdyn->output_section->vma + sdyn->output_offset + sizeof esd, |
| 2769 | esd.ldd); |
| 2770 | PUT_WORD (dynobj, |
| 2771 | (sdyn->output_section->vma |
| 2772 | + sdyn->output_offset |
| 2773 | + sizeof esd |
| 2774 | + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE), |
| 2775 | esd.ld); |
| 2776 | |
| 2777 | if (! bfd_set_section_contents (abfd, sdyn->output_section, &esd, |
| 2778 | (file_ptr) sdyn->output_offset, |
| 2779 | (bfd_size_type) sizeof esd)) |
| 2780 | return FALSE; |
| 2781 | |
| 2782 | PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_loaded); |
| 2783 | |
| 2784 | s = bfd_get_section_by_name (dynobj, ".need"); |
| 2785 | if (s == NULL || s->size == 0) |
| 2786 | PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_need); |
| 2787 | else |
| 2788 | PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| 2789 | esdl.ld_need); |
| 2790 | |
| 2791 | s = bfd_get_section_by_name (dynobj, ".rules"); |
| 2792 | if (s == NULL || s->size == 0) |
| 2793 | PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_rules); |
| 2794 | else |
| 2795 | PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| 2796 | esdl.ld_rules); |
| 2797 | |
| 2798 | s = bfd_get_section_by_name (dynobj, ".got"); |
| 2799 | BFD_ASSERT (s != NULL); |
| 2800 | PUT_WORD (dynobj, s->output_section->vma + s->output_offset, |
| 2801 | esdl.ld_got); |
| 2802 | |
| 2803 | s = bfd_get_section_by_name (dynobj, ".plt"); |
| 2804 | BFD_ASSERT (s != NULL); |
| 2805 | PUT_WORD (dynobj, s->output_section->vma + s->output_offset, |
| 2806 | esdl.ld_plt); |
| 2807 | PUT_WORD (dynobj, s->size, esdl.ld_plt_sz); |
| 2808 | |
| 2809 | s = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 2810 | BFD_ASSERT (s != NULL); |
| 2811 | BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) |
| 2812 | == s->size); |
| 2813 | PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| 2814 | esdl.ld_rel); |
| 2815 | |
| 2816 | s = bfd_get_section_by_name (dynobj, ".hash"); |
| 2817 | BFD_ASSERT (s != NULL); |
| 2818 | PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| 2819 | esdl.ld_hash); |
| 2820 | |
| 2821 | s = bfd_get_section_by_name (dynobj, ".dynsym"); |
| 2822 | BFD_ASSERT (s != NULL); |
| 2823 | PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| 2824 | esdl.ld_stab); |
| 2825 | |
| 2826 | PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_stab_hash); |
| 2827 | |
| 2828 | PUT_WORD (dynobj, (bfd_vma) sunos_hash_table (info)->bucketcount, |
| 2829 | esdl.ld_buckets); |
| 2830 | |
| 2831 | s = bfd_get_section_by_name (dynobj, ".dynstr"); |
| 2832 | BFD_ASSERT (s != NULL); |
| 2833 | PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| 2834 | esdl.ld_symbols); |
| 2835 | PUT_WORD (dynobj, s->size, esdl.ld_symb_size); |
| 2836 | |
| 2837 | /* The size of the text area is the size of the .text section |
| 2838 | rounded up to a page boundary. FIXME: Should the page size be |
| 2839 | conditional on something? */ |
| 2840 | PUT_WORD (dynobj, |
| 2841 | BFD_ALIGN (obj_textsec (abfd)->size, 0x2000), |
| 2842 | esdl.ld_text); |
| 2843 | |
| 2844 | pos = sdyn->output_offset; |
| 2845 | pos += sizeof esd + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE; |
| 2846 | if (! bfd_set_section_contents (abfd, sdyn->output_section, &esdl, |
| 2847 | pos, (bfd_size_type) sizeof esdl)) |
| 2848 | return FALSE; |
| 2849 | |
| 2850 | abfd->flags |= DYNAMIC; |
| 2851 | } |
| 2852 | |
| 2853 | return TRUE; |
| 2854 | } |