| 1 | /* BFD backend for SunOS binaries. |
| 2 | Copyright 1990, 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
| 3 | 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. |
| 4 | Written by Cygnus Support. |
| 5 | |
| 6 | This file is part of BFD, the Binary File Descriptor library. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 2 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02110-1301, USA. */ |
| 21 | |
| 22 | #define TARGETNAME "a.out-sunos-big" |
| 23 | |
| 24 | /* Do not "beautify" the CONCAT* macro args. Traditional C will not |
| 25 | remove whitespace added here, and thus will fail to concatenate |
| 26 | the tokens. */ |
| 27 | #define MY(OP) CONCAT2 (sunos_big_,OP) |
| 28 | |
| 29 | #include "bfd.h" |
| 30 | #include "bfdlink.h" |
| 31 | #include "libaout.h" |
| 32 | |
| 33 | /* ??? Where should this go? */ |
| 34 | #define MACHTYPE_OK(mtype) \ |
| 35 | (((mtype) == M_SPARC && bfd_lookup_arch (bfd_arch_sparc, 0) != NULL) \ |
| 36 | || ((mtype) == M_SPARCLET \ |
| 37 | && bfd_lookup_arch (bfd_arch_sparc, bfd_mach_sparc_sparclet) != NULL) \ |
| 38 | || ((mtype) == M_SPARCLITE_LE \ |
| 39 | && bfd_lookup_arch (bfd_arch_sparc, bfd_mach_sparc_sparclet) != NULL) \ |
| 40 | || (((mtype) == M_UNKNOWN || (mtype) == M_68010 || (mtype) == M_68020) \ |
| 41 | && bfd_lookup_arch (bfd_arch_m68k, 0) != NULL)) |
| 42 | |
| 43 | #define MY_get_dynamic_symtab_upper_bound sunos_get_dynamic_symtab_upper_bound |
| 44 | #define MY_canonicalize_dynamic_symtab sunos_canonicalize_dynamic_symtab |
| 45 | #define MY_get_synthetic_symtab _bfd_nodynamic_get_synthetic_symtab |
| 46 | #define MY_get_dynamic_reloc_upper_bound sunos_get_dynamic_reloc_upper_bound |
| 47 | #define MY_canonicalize_dynamic_reloc sunos_canonicalize_dynamic_reloc |
| 48 | #define MY_bfd_link_hash_table_create sunos_link_hash_table_create |
| 49 | #define MY_add_dynamic_symbols sunos_add_dynamic_symbols |
| 50 | #define MY_add_one_symbol sunos_add_one_symbol |
| 51 | #define MY_link_dynamic_object sunos_link_dynamic_object |
| 52 | #define MY_write_dynamic_symbol sunos_write_dynamic_symbol |
| 53 | #define MY_check_dynamic_reloc sunos_check_dynamic_reloc |
| 54 | #define MY_finish_dynamic_link sunos_finish_dynamic_link |
| 55 | |
| 56 | static bfd_boolean sunos_add_dynamic_symbols (bfd *, struct bfd_link_info *, struct external_nlist **, bfd_size_type *, char **); |
| 57 | 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 **); |
| 58 | static bfd_boolean sunos_link_dynamic_object (struct bfd_link_info *, bfd *); |
| 59 | static bfd_boolean sunos_write_dynamic_symbol (bfd *, struct bfd_link_info *, struct aout_link_hash_entry *); |
| 60 | 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 *); |
| 61 | static bfd_boolean sunos_finish_dynamic_link (bfd *, struct bfd_link_info *); |
| 62 | static struct bfd_link_hash_table *sunos_link_hash_table_create (bfd *); |
| 63 | static long sunos_get_dynamic_symtab_upper_bound (bfd *); |
| 64 | static long sunos_canonicalize_dynamic_symtab (bfd *, asymbol **); |
| 65 | static long sunos_get_dynamic_reloc_upper_bound (bfd *); |
| 66 | static long sunos_canonicalize_dynamic_reloc (bfd *, arelent **, asymbol **); |
| 67 | |
| 68 | /* Include the usual a.out support. */ |
| 69 | #include "aoutf1.h" |
| 70 | |
| 71 | /* The SunOS 4.1.4 /usr/include/locale.h defines valid as a macro. */ |
| 72 | #undef valid |
| 73 | |
| 74 | /* SunOS shared library support. We store a pointer to this structure |
| 75 | in obj_aout_dynamic_info (abfd). */ |
| 76 | |
| 77 | struct sunos_dynamic_info |
| 78 | { |
| 79 | /* Whether we found any dynamic information. */ |
| 80 | bfd_boolean valid; |
| 81 | /* Dynamic information. */ |
| 82 | struct internal_sun4_dynamic_link dyninfo; |
| 83 | /* Number of dynamic symbols. */ |
| 84 | unsigned long dynsym_count; |
| 85 | /* Read in nlists for dynamic symbols. */ |
| 86 | struct external_nlist *dynsym; |
| 87 | /* asymbol structures for dynamic symbols. */ |
| 88 | aout_symbol_type *canonical_dynsym; |
| 89 | /* Read in dynamic string table. */ |
| 90 | char *dynstr; |
| 91 | /* Number of dynamic relocs. */ |
| 92 | unsigned long dynrel_count; |
| 93 | /* Read in dynamic relocs. This may be reloc_std_external or |
| 94 | reloc_ext_external. */ |
| 95 | void * dynrel; |
| 96 | /* arelent structures for dynamic relocs. */ |
| 97 | arelent *canonical_dynrel; |
| 98 | }; |
| 99 | |
| 100 | /* The hash table of dynamic symbols is composed of two word entries. |
| 101 | See include/aout/sun4.h for details. */ |
| 102 | |
| 103 | #define HASH_ENTRY_SIZE (2 * BYTES_IN_WORD) |
| 104 | |
| 105 | /* Read in the basic dynamic information. This locates the __DYNAMIC |
| 106 | structure and uses it to find the dynamic_link structure. It |
| 107 | creates and saves a sunos_dynamic_info structure. If it can't find |
| 108 | __DYNAMIC, it sets the valid field of the sunos_dynamic_info |
| 109 | structure to FALSE to avoid doing this work again. */ |
| 110 | |
| 111 | static bfd_boolean |
| 112 | sunos_read_dynamic_info (bfd *abfd) |
| 113 | { |
| 114 | struct sunos_dynamic_info *info; |
| 115 | asection *dynsec; |
| 116 | bfd_vma dynoff; |
| 117 | struct external_sun4_dynamic dyninfo; |
| 118 | unsigned long dynver; |
| 119 | struct external_sun4_dynamic_link linkinfo; |
| 120 | bfd_size_type amt; |
| 121 | |
| 122 | if (obj_aout_dynamic_info (abfd) != NULL) |
| 123 | return TRUE; |
| 124 | |
| 125 | if ((abfd->flags & DYNAMIC) == 0) |
| 126 | { |
| 127 | bfd_set_error (bfd_error_invalid_operation); |
| 128 | return FALSE; |
| 129 | } |
| 130 | |
| 131 | amt = sizeof (struct sunos_dynamic_info); |
| 132 | info = bfd_zalloc (abfd, amt); |
| 133 | if (!info) |
| 134 | return FALSE; |
| 135 | info->valid = FALSE; |
| 136 | info->dynsym = NULL; |
| 137 | info->dynstr = NULL; |
| 138 | info->canonical_dynsym = NULL; |
| 139 | info->dynrel = NULL; |
| 140 | info->canonical_dynrel = NULL; |
| 141 | obj_aout_dynamic_info (abfd) = (void *) info; |
| 142 | |
| 143 | /* This code used to look for the __DYNAMIC symbol to locate the dynamic |
| 144 | linking information. |
| 145 | However this inhibits recovering the dynamic symbols from a |
| 146 | stripped object file, so blindly assume that the dynamic linking |
| 147 | information is located at the start of the data section. |
| 148 | We could verify this assumption later by looking through the dynamic |
| 149 | symbols for the __DYNAMIC symbol. */ |
| 150 | if ((abfd->flags & DYNAMIC) == 0) |
| 151 | return TRUE; |
| 152 | if (! bfd_get_section_contents (abfd, obj_datasec (abfd), (void *) &dyninfo, |
| 153 | (file_ptr) 0, |
| 154 | (bfd_size_type) sizeof dyninfo)) |
| 155 | return TRUE; |
| 156 | |
| 157 | dynver = GET_WORD (abfd, dyninfo.ld_version); |
| 158 | if (dynver != 2 && dynver != 3) |
| 159 | return TRUE; |
| 160 | |
| 161 | dynoff = GET_WORD (abfd, dyninfo.ld); |
| 162 | |
| 163 | /* dynoff is a virtual address. It is probably always in the .data |
| 164 | section, but this code should work even if it moves. */ |
| 165 | if (dynoff < bfd_get_section_vma (abfd, obj_datasec (abfd))) |
| 166 | dynsec = obj_textsec (abfd); |
| 167 | else |
| 168 | dynsec = obj_datasec (abfd); |
| 169 | dynoff -= bfd_get_section_vma (abfd, dynsec); |
| 170 | if (dynoff > dynsec->size) |
| 171 | return TRUE; |
| 172 | |
| 173 | /* This executable appears to be dynamically linked in a way that we |
| 174 | can understand. */ |
| 175 | if (! bfd_get_section_contents (abfd, dynsec, (void *) &linkinfo, |
| 176 | (file_ptr) dynoff, |
| 177 | (bfd_size_type) sizeof linkinfo)) |
| 178 | return TRUE; |
| 179 | |
| 180 | /* Swap in the dynamic link information. */ |
| 181 | info->dyninfo.ld_loaded = GET_WORD (abfd, linkinfo.ld_loaded); |
| 182 | info->dyninfo.ld_need = GET_WORD (abfd, linkinfo.ld_need); |
| 183 | info->dyninfo.ld_rules = GET_WORD (abfd, linkinfo.ld_rules); |
| 184 | info->dyninfo.ld_got = GET_WORD (abfd, linkinfo.ld_got); |
| 185 | info->dyninfo.ld_plt = GET_WORD (abfd, linkinfo.ld_plt); |
| 186 | info->dyninfo.ld_rel = GET_WORD (abfd, linkinfo.ld_rel); |
| 187 | info->dyninfo.ld_hash = GET_WORD (abfd, linkinfo.ld_hash); |
| 188 | info->dyninfo.ld_stab = GET_WORD (abfd, linkinfo.ld_stab); |
| 189 | info->dyninfo.ld_stab_hash = GET_WORD (abfd, linkinfo.ld_stab_hash); |
| 190 | info->dyninfo.ld_buckets = GET_WORD (abfd, linkinfo.ld_buckets); |
| 191 | info->dyninfo.ld_symbols = GET_WORD (abfd, linkinfo.ld_symbols); |
| 192 | info->dyninfo.ld_symb_size = GET_WORD (abfd, linkinfo.ld_symb_size); |
| 193 | info->dyninfo.ld_text = GET_WORD (abfd, linkinfo.ld_text); |
| 194 | info->dyninfo.ld_plt_sz = GET_WORD (abfd, linkinfo.ld_plt_sz); |
| 195 | |
| 196 | /* Reportedly the addresses need to be offset by the size of the |
| 197 | exec header in an NMAGIC file. */ |
| 198 | if (adata (abfd).magic == n_magic) |
| 199 | { |
| 200 | unsigned long exec_bytes_size = adata (abfd).exec_bytes_size; |
| 201 | |
| 202 | info->dyninfo.ld_need += exec_bytes_size; |
| 203 | info->dyninfo.ld_rules += exec_bytes_size; |
| 204 | info->dyninfo.ld_rel += exec_bytes_size; |
| 205 | info->dyninfo.ld_hash += exec_bytes_size; |
| 206 | info->dyninfo.ld_stab += exec_bytes_size; |
| 207 | info->dyninfo.ld_symbols += exec_bytes_size; |
| 208 | } |
| 209 | |
| 210 | /* The only way to get the size of the symbol information appears to |
| 211 | be to determine the distance between it and the string table. */ |
| 212 | info->dynsym_count = ((info->dyninfo.ld_symbols - info->dyninfo.ld_stab) |
| 213 | / EXTERNAL_NLIST_SIZE); |
| 214 | BFD_ASSERT (info->dynsym_count * EXTERNAL_NLIST_SIZE |
| 215 | == (unsigned long) (info->dyninfo.ld_symbols |
| 216 | - info->dyninfo.ld_stab)); |
| 217 | |
| 218 | /* Similarly, the relocs end at the hash table. */ |
| 219 | info->dynrel_count = ((info->dyninfo.ld_hash - info->dyninfo.ld_rel) |
| 220 | / obj_reloc_entry_size (abfd)); |
| 221 | BFD_ASSERT (info->dynrel_count * obj_reloc_entry_size (abfd) |
| 222 | == (unsigned long) (info->dyninfo.ld_hash |
| 223 | - info->dyninfo.ld_rel)); |
| 224 | |
| 225 | info->valid = TRUE; |
| 226 | |
| 227 | return TRUE; |
| 228 | } |
| 229 | |
| 230 | /* Return the amount of memory required for the dynamic symbols. */ |
| 231 | |
| 232 | static long |
| 233 | sunos_get_dynamic_symtab_upper_bound (bfd *abfd) |
| 234 | { |
| 235 | struct sunos_dynamic_info *info; |
| 236 | |
| 237 | if (! sunos_read_dynamic_info (abfd)) |
| 238 | return -1; |
| 239 | |
| 240 | info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| 241 | if (! info->valid) |
| 242 | { |
| 243 | bfd_set_error (bfd_error_no_symbols); |
| 244 | return -1; |
| 245 | } |
| 246 | |
| 247 | return (info->dynsym_count + 1) * sizeof (asymbol *); |
| 248 | } |
| 249 | |
| 250 | /* Read the external dynamic symbols. */ |
| 251 | |
| 252 | static bfd_boolean |
| 253 | sunos_slurp_dynamic_symtab (bfd *abfd) |
| 254 | { |
| 255 | struct sunos_dynamic_info *info; |
| 256 | bfd_size_type amt; |
| 257 | |
| 258 | /* Get the general dynamic information. */ |
| 259 | if (obj_aout_dynamic_info (abfd) == NULL) |
| 260 | { |
| 261 | if (! sunos_read_dynamic_info (abfd)) |
| 262 | return FALSE; |
| 263 | } |
| 264 | |
| 265 | info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| 266 | if (! info->valid) |
| 267 | { |
| 268 | bfd_set_error (bfd_error_no_symbols); |
| 269 | return FALSE; |
| 270 | } |
| 271 | |
| 272 | /* Get the dynamic nlist structures. */ |
| 273 | if (info->dynsym == NULL) |
| 274 | { |
| 275 | amt = (bfd_size_type) info->dynsym_count * EXTERNAL_NLIST_SIZE; |
| 276 | info->dynsym = bfd_alloc (abfd, amt); |
| 277 | if (info->dynsym == NULL && info->dynsym_count != 0) |
| 278 | return FALSE; |
| 279 | if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_stab, SEEK_SET) != 0 |
| 280 | || bfd_bread ((void *) info->dynsym, amt, abfd) != amt) |
| 281 | { |
| 282 | if (info->dynsym != NULL) |
| 283 | { |
| 284 | bfd_release (abfd, info->dynsym); |
| 285 | info->dynsym = NULL; |
| 286 | } |
| 287 | return FALSE; |
| 288 | } |
| 289 | } |
| 290 | |
| 291 | /* Get the dynamic strings. */ |
| 292 | if (info->dynstr == NULL) |
| 293 | { |
| 294 | amt = info->dyninfo.ld_symb_size; |
| 295 | info->dynstr = bfd_alloc (abfd, amt); |
| 296 | if (info->dynstr == NULL && info->dyninfo.ld_symb_size != 0) |
| 297 | return FALSE; |
| 298 | if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_symbols, SEEK_SET) != 0 |
| 299 | || bfd_bread ((void *) info->dynstr, amt, abfd) != amt) |
| 300 | { |
| 301 | if (info->dynstr != NULL) |
| 302 | { |
| 303 | bfd_release (abfd, info->dynstr); |
| 304 | info->dynstr = NULL; |
| 305 | } |
| 306 | return FALSE; |
| 307 | } |
| 308 | } |
| 309 | |
| 310 | return TRUE; |
| 311 | } |
| 312 | |
| 313 | /* Read in the dynamic symbols. */ |
| 314 | |
| 315 | static long |
| 316 | sunos_canonicalize_dynamic_symtab (bfd *abfd, asymbol **storage) |
| 317 | { |
| 318 | struct sunos_dynamic_info *info; |
| 319 | unsigned long i; |
| 320 | |
| 321 | if (! sunos_slurp_dynamic_symtab (abfd)) |
| 322 | return -1; |
| 323 | |
| 324 | info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| 325 | |
| 326 | #ifdef CHECK_DYNAMIC_HASH |
| 327 | /* Check my understanding of the dynamic hash table by making sure |
| 328 | that each symbol can be located in the hash table. */ |
| 329 | { |
| 330 | bfd_size_type table_size; |
| 331 | bfd_byte *table; |
| 332 | bfd_size_type i; |
| 333 | |
| 334 | if (info->dyninfo.ld_buckets > info->dynsym_count) |
| 335 | abort (); |
| 336 | table_size = info->dyninfo.ld_stab - info->dyninfo.ld_hash; |
| 337 | table = bfd_malloc (table_size); |
| 338 | if (table == NULL && table_size != 0) |
| 339 | abort (); |
| 340 | if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_hash, SEEK_SET) != 0 |
| 341 | || bfd_bread ((void *) table, table_size, abfd) != table_size) |
| 342 | abort (); |
| 343 | for (i = 0; i < info->dynsym_count; i++) |
| 344 | { |
| 345 | unsigned char *name; |
| 346 | unsigned long hash; |
| 347 | |
| 348 | name = ((unsigned char *) info->dynstr |
| 349 | + GET_WORD (abfd, info->dynsym[i].e_strx)); |
| 350 | hash = 0; |
| 351 | while (*name != '\0') |
| 352 | hash = (hash << 1) + *name++; |
| 353 | hash &= 0x7fffffff; |
| 354 | hash %= info->dyninfo.ld_buckets; |
| 355 | while (GET_WORD (abfd, table + hash * HASH_ENTRY_SIZE) != i) |
| 356 | { |
| 357 | hash = GET_WORD (abfd, |
| 358 | table + hash * HASH_ENTRY_SIZE + BYTES_IN_WORD); |
| 359 | if (hash == 0 || hash >= table_size / HASH_ENTRY_SIZE) |
| 360 | abort (); |
| 361 | } |
| 362 | } |
| 363 | free (table); |
| 364 | } |
| 365 | #endif /* CHECK_DYNAMIC_HASH */ |
| 366 | |
| 367 | /* Get the asymbol structures corresponding to the dynamic nlist |
| 368 | structures. */ |
| 369 | if (info->canonical_dynsym == NULL) |
| 370 | { |
| 371 | bfd_size_type size; |
| 372 | bfd_size_type strsize = info->dyninfo.ld_symb_size; |
| 373 | |
| 374 | size = (bfd_size_type) info->dynsym_count * sizeof (aout_symbol_type); |
| 375 | info->canonical_dynsym = bfd_alloc (abfd, size); |
| 376 | if (info->canonical_dynsym == NULL && info->dynsym_count != 0) |
| 377 | return -1; |
| 378 | |
| 379 | if (! aout_32_translate_symbol_table (abfd, info->canonical_dynsym, |
| 380 | info->dynsym, |
| 381 | (bfd_size_type) info->dynsym_count, |
| 382 | info->dynstr, strsize, TRUE)) |
| 383 | { |
| 384 | if (info->canonical_dynsym != NULL) |
| 385 | { |
| 386 | bfd_release (abfd, info->canonical_dynsym); |
| 387 | info->canonical_dynsym = NULL; |
| 388 | } |
| 389 | return -1; |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | /* Return pointers to the dynamic asymbol structures. */ |
| 394 | for (i = 0; i < info->dynsym_count; i++) |
| 395 | *storage++ = (asymbol *) (info->canonical_dynsym + i); |
| 396 | *storage = NULL; |
| 397 | |
| 398 | return info->dynsym_count; |
| 399 | } |
| 400 | |
| 401 | /* Return the amount of memory required for the dynamic relocs. */ |
| 402 | |
| 403 | static long |
| 404 | sunos_get_dynamic_reloc_upper_bound (bfd *abfd) |
| 405 | { |
| 406 | struct sunos_dynamic_info *info; |
| 407 | |
| 408 | if (! sunos_read_dynamic_info (abfd)) |
| 409 | return -1; |
| 410 | |
| 411 | info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| 412 | if (! info->valid) |
| 413 | { |
| 414 | bfd_set_error (bfd_error_no_symbols); |
| 415 | return -1; |
| 416 | } |
| 417 | |
| 418 | return (info->dynrel_count + 1) * sizeof (arelent *); |
| 419 | } |
| 420 | |
| 421 | /* Read in the dynamic relocs. */ |
| 422 | |
| 423 | static long |
| 424 | sunos_canonicalize_dynamic_reloc (bfd *abfd, arelent **storage, asymbol **syms) |
| 425 | { |
| 426 | struct sunos_dynamic_info *info; |
| 427 | unsigned long i; |
| 428 | bfd_size_type size; |
| 429 | |
| 430 | /* Get the general dynamic information. */ |
| 431 | if (obj_aout_dynamic_info (abfd) == NULL) |
| 432 | { |
| 433 | if (! sunos_read_dynamic_info (abfd)) |
| 434 | return -1; |
| 435 | } |
| 436 | |
| 437 | info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| 438 | if (! info->valid) |
| 439 | { |
| 440 | bfd_set_error (bfd_error_no_symbols); |
| 441 | return -1; |
| 442 | } |
| 443 | |
| 444 | /* Get the dynamic reloc information. */ |
| 445 | if (info->dynrel == NULL) |
| 446 | { |
| 447 | size = (bfd_size_type) info->dynrel_count * obj_reloc_entry_size (abfd); |
| 448 | info->dynrel = bfd_alloc (abfd, size); |
| 449 | if (info->dynrel == NULL && size != 0) |
| 450 | return -1; |
| 451 | if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_rel, SEEK_SET) != 0 |
| 452 | || bfd_bread ((void *) info->dynrel, size, abfd) != size) |
| 453 | { |
| 454 | if (info->dynrel != NULL) |
| 455 | { |
| 456 | bfd_release (abfd, info->dynrel); |
| 457 | info->dynrel = NULL; |
| 458 | } |
| 459 | return -1; |
| 460 | } |
| 461 | } |
| 462 | |
| 463 | /* Get the arelent structures corresponding to the dynamic reloc |
| 464 | information. */ |
| 465 | if (info->canonical_dynrel == NULL) |
| 466 | { |
| 467 | arelent *to; |
| 468 | |
| 469 | size = (bfd_size_type) info->dynrel_count * sizeof (arelent); |
| 470 | info->canonical_dynrel = bfd_alloc (abfd, size); |
| 471 | if (info->canonical_dynrel == NULL && info->dynrel_count != 0) |
| 472 | return -1; |
| 473 | |
| 474 | to = info->canonical_dynrel; |
| 475 | |
| 476 | if (obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE) |
| 477 | { |
| 478 | struct reloc_ext_external *p; |
| 479 | struct reloc_ext_external *pend; |
| 480 | |
| 481 | p = (struct reloc_ext_external *) info->dynrel; |
| 482 | pend = p + info->dynrel_count; |
| 483 | for (; p < pend; p++, to++) |
| 484 | NAME (aout, swap_ext_reloc_in) (abfd, p, to, syms, |
| 485 | (bfd_size_type) info->dynsym_count); |
| 486 | } |
| 487 | else |
| 488 | { |
| 489 | struct reloc_std_external *p; |
| 490 | struct reloc_std_external *pend; |
| 491 | |
| 492 | p = (struct reloc_std_external *) info->dynrel; |
| 493 | pend = p + info->dynrel_count; |
| 494 | for (; p < pend; p++, to++) |
| 495 | NAME (aout, swap_std_reloc_in) (abfd, p, to, syms, |
| 496 | (bfd_size_type) info->dynsym_count); |
| 497 | } |
| 498 | } |
| 499 | |
| 500 | /* Return pointers to the dynamic arelent structures. */ |
| 501 | for (i = 0; i < info->dynrel_count; i++) |
| 502 | *storage++ = info->canonical_dynrel + i; |
| 503 | *storage = NULL; |
| 504 | |
| 505 | return info->dynrel_count; |
| 506 | } |
| 507 | \f |
| 508 | /* Code to handle linking of SunOS shared libraries. */ |
| 509 | |
| 510 | /* A SPARC procedure linkage table entry is 12 bytes. The first entry |
| 511 | in the table is a jump which is filled in by the runtime linker. |
| 512 | The remaining entries are branches back to the first entry, |
| 513 | followed by an index into the relocation table encoded to look like |
| 514 | a sethi of %g0. */ |
| 515 | |
| 516 | #define SPARC_PLT_ENTRY_SIZE (12) |
| 517 | |
| 518 | static const bfd_byte sparc_plt_first_entry[SPARC_PLT_ENTRY_SIZE] = |
| 519 | { |
| 520 | /* sethi %hi(0),%g1; address filled in by runtime linker. */ |
| 521 | 0x3, 0, 0, 0, |
| 522 | /* jmp %g1; offset filled in by runtime linker. */ |
| 523 | 0x81, 0xc0, 0x60, 0, |
| 524 | /* nop */ |
| 525 | 0x1, 0, 0, 0 |
| 526 | }; |
| 527 | |
| 528 | /* save %sp, -96, %sp */ |
| 529 | #define SPARC_PLT_ENTRY_WORD0 ((bfd_vma) 0x9de3bfa0) |
| 530 | /* call; address filled in later. */ |
| 531 | #define SPARC_PLT_ENTRY_WORD1 ((bfd_vma) 0x40000000) |
| 532 | /* sethi; reloc index filled in later. */ |
| 533 | #define SPARC_PLT_ENTRY_WORD2 ((bfd_vma) 0x01000000) |
| 534 | |
| 535 | /* This sequence is used when for the jump table entry to a defined |
| 536 | symbol in a complete executable. It is used when linking PIC |
| 537 | compiled code which is not being put into a shared library. */ |
| 538 | /* sethi <address to be filled in later>, %g1 */ |
| 539 | #define SPARC_PLT_PIC_WORD0 ((bfd_vma) 0x03000000) |
| 540 | /* jmp %g1 + <address to be filled in later> */ |
| 541 | #define SPARC_PLT_PIC_WORD1 ((bfd_vma) 0x81c06000) |
| 542 | /* nop */ |
| 543 | #define SPARC_PLT_PIC_WORD2 ((bfd_vma) 0x01000000) |
| 544 | |
| 545 | /* An m68k procedure linkage table entry is 8 bytes. The first entry |
| 546 | in the table is a jump which is filled in the by the runtime |
| 547 | linker. The remaining entries are branches back to the first |
| 548 | entry, followed by a two byte index into the relocation table. */ |
| 549 | |
| 550 | #define M68K_PLT_ENTRY_SIZE (8) |
| 551 | |
| 552 | static const bfd_byte m68k_plt_first_entry[M68K_PLT_ENTRY_SIZE] = |
| 553 | { |
| 554 | /* jmps @# */ |
| 555 | 0x4e, 0xf9, |
| 556 | /* Filled in by runtime linker with a magic address. */ |
| 557 | 0, 0, 0, 0, |
| 558 | /* Not used? */ |
| 559 | 0, 0 |
| 560 | }; |
| 561 | |
| 562 | /* bsrl */ |
| 563 | #define M68K_PLT_ENTRY_WORD0 ((bfd_vma) 0x61ff) |
| 564 | /* Remaining words filled in later. */ |
| 565 | |
| 566 | /* An entry in the SunOS linker hash table. */ |
| 567 | |
| 568 | struct sunos_link_hash_entry |
| 569 | { |
| 570 | struct aout_link_hash_entry root; |
| 571 | |
| 572 | /* If this is a dynamic symbol, this is its index into the dynamic |
| 573 | symbol table. This is initialized to -1. As the linker looks at |
| 574 | the input files, it changes this to -2 if it will be added to the |
| 575 | dynamic symbol table. After all the input files have been seen, |
| 576 | the linker will know whether to build a dynamic symbol table; if |
| 577 | it does build one, this becomes the index into the table. */ |
| 578 | long dynindx; |
| 579 | |
| 580 | /* If this is a dynamic symbol, this is the index of the name in the |
| 581 | dynamic symbol string table. */ |
| 582 | long dynstr_index; |
| 583 | |
| 584 | /* The offset into the global offset table used for this symbol. If |
| 585 | the symbol does not require a GOT entry, this is 0. */ |
| 586 | bfd_vma got_offset; |
| 587 | |
| 588 | /* The offset into the procedure linkage table used for this symbol. |
| 589 | If the symbol does not require a PLT entry, this is 0. */ |
| 590 | bfd_vma plt_offset; |
| 591 | |
| 592 | /* Some linker flags. */ |
| 593 | unsigned char flags; |
| 594 | /* Symbol is referenced by a regular object. */ |
| 595 | #define SUNOS_REF_REGULAR 01 |
| 596 | /* Symbol is defined by a regular object. */ |
| 597 | #define SUNOS_DEF_REGULAR 02 |
| 598 | /* Symbol is referenced by a dynamic object. */ |
| 599 | #define SUNOS_REF_DYNAMIC 04 |
| 600 | /* Symbol is defined by a dynamic object. */ |
| 601 | #define SUNOS_DEF_DYNAMIC 010 |
| 602 | /* Symbol is a constructor symbol in a regular object. */ |
| 603 | #define SUNOS_CONSTRUCTOR 020 |
| 604 | }; |
| 605 | |
| 606 | /* The SunOS linker hash table. */ |
| 607 | |
| 608 | struct sunos_link_hash_table |
| 609 | { |
| 610 | struct aout_link_hash_table root; |
| 611 | |
| 612 | /* The object which holds the dynamic sections. */ |
| 613 | bfd *dynobj; |
| 614 | |
| 615 | /* Whether we have created the dynamic sections. */ |
| 616 | bfd_boolean dynamic_sections_created; |
| 617 | |
| 618 | /* Whether we need the dynamic sections. */ |
| 619 | bfd_boolean dynamic_sections_needed; |
| 620 | |
| 621 | /* Whether we need the .got table. */ |
| 622 | bfd_boolean got_needed; |
| 623 | |
| 624 | /* The number of dynamic symbols. */ |
| 625 | size_t dynsymcount; |
| 626 | |
| 627 | /* The number of buckets in the hash table. */ |
| 628 | size_t bucketcount; |
| 629 | |
| 630 | /* The list of dynamic objects needed by dynamic objects included in |
| 631 | the link. */ |
| 632 | struct bfd_link_needed_list *needed; |
| 633 | |
| 634 | /* The offset of __GLOBAL_OFFSET_TABLE_ into the .got section. */ |
| 635 | bfd_vma got_base; |
| 636 | }; |
| 637 | |
| 638 | /* Routine to create an entry in an SunOS link hash table. */ |
| 639 | |
| 640 | static struct bfd_hash_entry * |
| 641 | sunos_link_hash_newfunc (struct bfd_hash_entry *entry, |
| 642 | struct bfd_hash_table *table, |
| 643 | const char *string) |
| 644 | { |
| 645 | struct sunos_link_hash_entry *ret = (struct sunos_link_hash_entry *) entry; |
| 646 | |
| 647 | /* Allocate the structure if it has not already been allocated by a |
| 648 | subclass. */ |
| 649 | if (ret == NULL) |
| 650 | ret = bfd_hash_allocate (table, sizeof (* ret)); |
| 651 | if (ret == NULL) |
| 652 | return NULL; |
| 653 | |
| 654 | /* Call the allocation method of the superclass. */ |
| 655 | ret = ((struct sunos_link_hash_entry *) |
| 656 | NAME (aout, link_hash_newfunc) ((struct bfd_hash_entry *) ret, |
| 657 | table, string)); |
| 658 | if (ret != NULL) |
| 659 | { |
| 660 | /* Set local fields. */ |
| 661 | ret->dynindx = -1; |
| 662 | ret->dynstr_index = -1; |
| 663 | ret->got_offset = 0; |
| 664 | ret->plt_offset = 0; |
| 665 | ret->flags = 0; |
| 666 | } |
| 667 | |
| 668 | return (struct bfd_hash_entry *) ret; |
| 669 | } |
| 670 | |
| 671 | /* Create a SunOS link hash table. */ |
| 672 | |
| 673 | static struct bfd_link_hash_table * |
| 674 | sunos_link_hash_table_create (bfd *abfd) |
| 675 | { |
| 676 | struct sunos_link_hash_table *ret; |
| 677 | bfd_size_type amt = sizeof (struct sunos_link_hash_table); |
| 678 | |
| 679 | ret = bfd_malloc (amt); |
| 680 | if (ret == NULL) |
| 681 | return NULL; |
| 682 | if (! NAME (aout, link_hash_table_init) (&ret->root, abfd, |
| 683 | sunos_link_hash_newfunc)) |
| 684 | { |
| 685 | free (ret); |
| 686 | return NULL; |
| 687 | } |
| 688 | |
| 689 | ret->dynobj = NULL; |
| 690 | ret->dynamic_sections_created = FALSE; |
| 691 | ret->dynamic_sections_needed = FALSE; |
| 692 | ret->got_needed = FALSE; |
| 693 | ret->dynsymcount = 0; |
| 694 | ret->bucketcount = 0; |
| 695 | ret->needed = NULL; |
| 696 | ret->got_base = 0; |
| 697 | |
| 698 | return &ret->root.root; |
| 699 | } |
| 700 | |
| 701 | /* Look up an entry in an SunOS link hash table. */ |
| 702 | |
| 703 | #define sunos_link_hash_lookup(table, string, create, copy, follow) \ |
| 704 | ((struct sunos_link_hash_entry *) \ |
| 705 | aout_link_hash_lookup (&(table)->root, (string), (create), (copy),\ |
| 706 | (follow))) |
| 707 | |
| 708 | /* Traverse a SunOS link hash table. */ |
| 709 | |
| 710 | #define sunos_link_hash_traverse(table, func, info) \ |
| 711 | (aout_link_hash_traverse \ |
| 712 | (&(table)->root, \ |
| 713 | (bfd_boolean (*) (struct aout_link_hash_entry *, void *)) (func), \ |
| 714 | (info))) |
| 715 | |
| 716 | /* Get the SunOS link hash table from the info structure. This is |
| 717 | just a cast. */ |
| 718 | |
| 719 | #define sunos_hash_table(p) ((struct sunos_link_hash_table *) ((p)->hash)) |
| 720 | |
| 721 | /* Create the dynamic sections needed if we are linking against a |
| 722 | dynamic object, or if we are linking PIC compiled code. ABFD is a |
| 723 | bfd we can attach the dynamic sections to. The linker script will |
| 724 | look for these special sections names and put them in the right |
| 725 | place in the output file. See include/aout/sun4.h for more details |
| 726 | of the dynamic linking information. */ |
| 727 | |
| 728 | static bfd_boolean |
| 729 | sunos_create_dynamic_sections (bfd *abfd, |
| 730 | struct bfd_link_info *info, |
| 731 | bfd_boolean needed) |
| 732 | { |
| 733 | asection *s; |
| 734 | |
| 735 | if (! sunos_hash_table (info)->dynamic_sections_created) |
| 736 | { |
| 737 | flagword flags; |
| 738 | |
| 739 | sunos_hash_table (info)->dynobj = abfd; |
| 740 | |
| 741 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 742 | | SEC_LINKER_CREATED); |
| 743 | |
| 744 | /* The .dynamic section holds the basic dynamic information: the |
| 745 | sun4_dynamic structure, the dynamic debugger information, and |
| 746 | the sun4_dynamic_link structure. */ |
| 747 | s = bfd_make_section (abfd, ".dynamic"); |
| 748 | if (s == NULL |
| 749 | || ! bfd_set_section_flags (abfd, s, flags) |
| 750 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 751 | return FALSE; |
| 752 | |
| 753 | /* The .got section holds the global offset table. The address |
| 754 | is put in the ld_got field. */ |
| 755 | s = bfd_make_section (abfd, ".got"); |
| 756 | if (s == NULL |
| 757 | || ! bfd_set_section_flags (abfd, s, flags) |
| 758 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 759 | return FALSE; |
| 760 | |
| 761 | /* The .plt section holds the procedure linkage table. The |
| 762 | address is put in the ld_plt field. */ |
| 763 | s = bfd_make_section (abfd, ".plt"); |
| 764 | if (s == NULL |
| 765 | || ! bfd_set_section_flags (abfd, s, flags | SEC_CODE) |
| 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 (abfd, ".dynrel"); |
| 772 | if (s == NULL |
| 773 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| 774 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 775 | return FALSE; |
| 776 | |
| 777 | /* The .hash section holds the dynamic hash table. The address |
| 778 | is put in the ld_hash field. */ |
| 779 | s = bfd_make_section (abfd, ".hash"); |
| 780 | if (s == NULL |
| 781 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| 782 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 783 | return FALSE; |
| 784 | |
| 785 | /* The .dynsym section holds the dynamic symbols. The address |
| 786 | is put in the ld_stab field. */ |
| 787 | s = bfd_make_section (abfd, ".dynsym"); |
| 788 | if (s == NULL |
| 789 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| 790 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 791 | return FALSE; |
| 792 | |
| 793 | /* The .dynstr section holds the dynamic symbol string table. |
| 794 | The address is put in the ld_symbols field. */ |
| 795 | s = bfd_make_section (abfd, ".dynstr"); |
| 796 | if (s == NULL |
| 797 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| 798 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 799 | return FALSE; |
| 800 | |
| 801 | sunos_hash_table (info)->dynamic_sections_created = TRUE; |
| 802 | } |
| 803 | |
| 804 | if ((needed && ! sunos_hash_table (info)->dynamic_sections_needed) |
| 805 | || info->shared) |
| 806 | { |
| 807 | bfd *dynobj; |
| 808 | |
| 809 | dynobj = sunos_hash_table (info)->dynobj; |
| 810 | |
| 811 | s = bfd_get_section_by_name (dynobj, ".got"); |
| 812 | if (s->size == 0) |
| 813 | s->size = BYTES_IN_WORD; |
| 814 | |
| 815 | sunos_hash_table (info)->dynamic_sections_needed = TRUE; |
| 816 | sunos_hash_table (info)->got_needed = TRUE; |
| 817 | } |
| 818 | |
| 819 | return TRUE; |
| 820 | } |
| 821 | |
| 822 | /* Add dynamic symbols during a link. This is called by the a.out |
| 823 | backend linker for each object it encounters. */ |
| 824 | |
| 825 | static bfd_boolean |
| 826 | sunos_add_dynamic_symbols (bfd *abfd, |
| 827 | struct bfd_link_info *info, |
| 828 | struct external_nlist **symsp, |
| 829 | bfd_size_type *sym_countp, |
| 830 | char **stringsp) |
| 831 | { |
| 832 | bfd *dynobj; |
| 833 | struct sunos_dynamic_info *dinfo; |
| 834 | unsigned long need; |
| 835 | |
| 836 | /* Make sure we have all the required sections. */ |
| 837 | if (info->hash->creator == abfd->xvec) |
| 838 | { |
| 839 | if (! sunos_create_dynamic_sections (abfd, info, |
| 840 | ((abfd->flags & DYNAMIC) != 0 |
| 841 | && !info->relocatable))) |
| 842 | return FALSE; |
| 843 | } |
| 844 | |
| 845 | /* There is nothing else to do for a normal object. */ |
| 846 | if ((abfd->flags & DYNAMIC) == 0) |
| 847 | return TRUE; |
| 848 | |
| 849 | dynobj = sunos_hash_table (info)->dynobj; |
| 850 | |
| 851 | /* We do not want to include the sections in a dynamic object in the |
| 852 | output file. We hack by simply clobbering the list of sections |
| 853 | in the BFD. This could be handled more cleanly by, say, a new |
| 854 | section flag; the existing SEC_NEVER_LOAD flag is not the one we |
| 855 | want, because that one still implies that the section takes up |
| 856 | space in the output file. If this is the first object we have |
| 857 | seen, we must preserve the dynamic sections we just created. */ |
| 858 | if (abfd != dynobj) |
| 859 | abfd->sections = NULL; |
| 860 | else |
| 861 | { |
| 862 | asection *s; |
| 863 | |
| 864 | for (s = abfd->sections; s != NULL; s = s->next) |
| 865 | { |
| 866 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
| 867 | bfd_section_list_remove (abfd, s); |
| 868 | } |
| 869 | } |
| 870 | |
| 871 | /* The native linker seems to just ignore dynamic objects when -r is |
| 872 | used. */ |
| 873 | if (info->relocatable) |
| 874 | return TRUE; |
| 875 | |
| 876 | /* There's no hope of using a dynamic object which does not exactly |
| 877 | match the format of the output file. */ |
| 878 | if (info->hash->creator != abfd->xvec) |
| 879 | { |
| 880 | bfd_set_error (bfd_error_invalid_operation); |
| 881 | return FALSE; |
| 882 | } |
| 883 | |
| 884 | /* Make sure we have a .need and a .rules sections. These are only |
| 885 | needed if there really is a dynamic object in the link, so they |
| 886 | are not added by sunos_create_dynamic_sections. */ |
| 887 | if (bfd_get_section_by_name (dynobj, ".need") == NULL) |
| 888 | { |
| 889 | /* The .need section holds the list of names of shared objets |
| 890 | which must be included at runtime. The address of this |
| 891 | section is put in the ld_need field. */ |
| 892 | asection *s = bfd_make_section (dynobj, ".need"); |
| 893 | if (s == NULL |
| 894 | || ! bfd_set_section_flags (dynobj, s, |
| 895 | (SEC_ALLOC |
| 896 | | SEC_LOAD |
| 897 | | SEC_HAS_CONTENTS |
| 898 | | SEC_IN_MEMORY |
| 899 | | SEC_READONLY)) |
| 900 | || ! bfd_set_section_alignment (dynobj, s, 2)) |
| 901 | return FALSE; |
| 902 | } |
| 903 | |
| 904 | if (bfd_get_section_by_name (dynobj, ".rules") == NULL) |
| 905 | { |
| 906 | /* The .rules section holds the path to search for shared |
| 907 | objects. The address of this section is put in the ld_rules |
| 908 | field. */ |
| 909 | asection *s = bfd_make_section (dynobj, ".rules"); |
| 910 | if (s == NULL |
| 911 | || ! bfd_set_section_flags (dynobj, s, |
| 912 | (SEC_ALLOC |
| 913 | | SEC_LOAD |
| 914 | | SEC_HAS_CONTENTS |
| 915 | | SEC_IN_MEMORY |
| 916 | | SEC_READONLY)) |
| 917 | || ! bfd_set_section_alignment (dynobj, s, 2)) |
| 918 | return FALSE; |
| 919 | } |
| 920 | |
| 921 | /* Pick up the dynamic symbols and return them to the caller. */ |
| 922 | if (! sunos_slurp_dynamic_symtab (abfd)) |
| 923 | return FALSE; |
| 924 | |
| 925 | dinfo = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| 926 | *symsp = dinfo->dynsym; |
| 927 | *sym_countp = dinfo->dynsym_count; |
| 928 | *stringsp = dinfo->dynstr; |
| 929 | |
| 930 | /* Record information about any other objects needed by this one. */ |
| 931 | need = dinfo->dyninfo.ld_need; |
| 932 | while (need != 0) |
| 933 | { |
| 934 | bfd_byte buf[16]; |
| 935 | unsigned long name, flags; |
| 936 | unsigned short major_vno, minor_vno; |
| 937 | struct bfd_link_needed_list *needed, **pp; |
| 938 | char *namebuf, *p; |
| 939 | bfd_size_type alc; |
| 940 | bfd_byte b; |
| 941 | char *namecopy; |
| 942 | |
| 943 | if (bfd_seek (abfd, (file_ptr) need, SEEK_SET) != 0 |
| 944 | || bfd_bread (buf, (bfd_size_type) 16, abfd) != 16) |
| 945 | return FALSE; |
| 946 | |
| 947 | /* For the format of an ld_need entry, see aout/sun4.h. We |
| 948 | should probably define structs for this manipulation. */ |
| 949 | name = bfd_get_32 (abfd, buf); |
| 950 | flags = bfd_get_32 (abfd, buf + 4); |
| 951 | major_vno = (unsigned short) bfd_get_16 (abfd, buf + 8); |
| 952 | minor_vno = (unsigned short) bfd_get_16 (abfd, buf + 10); |
| 953 | need = bfd_get_32 (abfd, buf + 12); |
| 954 | |
| 955 | alc = sizeof (struct bfd_link_needed_list); |
| 956 | needed = bfd_alloc (abfd, alc); |
| 957 | if (needed == NULL) |
| 958 | return FALSE; |
| 959 | needed->by = abfd; |
| 960 | |
| 961 | /* We return the name as [-l]name[.maj][.min]. */ |
| 962 | alc = 30; |
| 963 | namebuf = bfd_malloc (alc + 1); |
| 964 | if (namebuf == NULL) |
| 965 | return FALSE; |
| 966 | p = namebuf; |
| 967 | |
| 968 | if ((flags & 0x80000000) != 0) |
| 969 | { |
| 970 | *p++ = '-'; |
| 971 | *p++ = 'l'; |
| 972 | } |
| 973 | if (bfd_seek (abfd, (file_ptr) name, SEEK_SET) != 0) |
| 974 | { |
| 975 | free (namebuf); |
| 976 | return FALSE; |
| 977 | } |
| 978 | |
| 979 | do |
| 980 | { |
| 981 | if (bfd_bread (&b, (bfd_size_type) 1, abfd) != 1) |
| 982 | { |
| 983 | free (namebuf); |
| 984 | return FALSE; |
| 985 | } |
| 986 | |
| 987 | if ((bfd_size_type) (p - namebuf) >= alc) |
| 988 | { |
| 989 | char *n; |
| 990 | |
| 991 | alc *= 2; |
| 992 | n = bfd_realloc (namebuf, alc + 1); |
| 993 | if (n == NULL) |
| 994 | { |
| 995 | free (namebuf); |
| 996 | return FALSE; |
| 997 | } |
| 998 | p = n + (p - namebuf); |
| 999 | namebuf = n; |
| 1000 | } |
| 1001 | |
| 1002 | *p++ = b; |
| 1003 | } |
| 1004 | while (b != '\0'); |
| 1005 | |
| 1006 | if (major_vno == 0) |
| 1007 | *p = '\0'; |
| 1008 | else |
| 1009 | { |
| 1010 | char majbuf[30]; |
| 1011 | char minbuf[30]; |
| 1012 | |
| 1013 | sprintf (majbuf, ".%d", major_vno); |
| 1014 | if (minor_vno == 0) |
| 1015 | minbuf[0] = '\0'; |
| 1016 | else |
| 1017 | sprintf (minbuf, ".%d", minor_vno); |
| 1018 | |
| 1019 | if ((p - namebuf) + strlen (majbuf) + strlen (minbuf) >= alc) |
| 1020 | { |
| 1021 | char *n; |
| 1022 | |
| 1023 | alc = (p - namebuf) + strlen (majbuf) + strlen (minbuf); |
| 1024 | n = bfd_realloc (namebuf, alc + 1); |
| 1025 | if (n == NULL) |
| 1026 | { |
| 1027 | free (namebuf); |
| 1028 | return FALSE; |
| 1029 | } |
| 1030 | p = n + (p - namebuf); |
| 1031 | namebuf = n; |
| 1032 | } |
| 1033 | |
| 1034 | strcpy (p, majbuf); |
| 1035 | strcat (p, minbuf); |
| 1036 | } |
| 1037 | |
| 1038 | namecopy = bfd_alloc (abfd, (bfd_size_type) strlen (namebuf) + 1); |
| 1039 | if (namecopy == NULL) |
| 1040 | { |
| 1041 | free (namebuf); |
| 1042 | return FALSE; |
| 1043 | } |
| 1044 | strcpy (namecopy, namebuf); |
| 1045 | free (namebuf); |
| 1046 | needed->name = namecopy; |
| 1047 | |
| 1048 | needed->next = NULL; |
| 1049 | |
| 1050 | for (pp = &sunos_hash_table (info)->needed; |
| 1051 | *pp != NULL; |
| 1052 | pp = &(*pp)->next) |
| 1053 | ; |
| 1054 | *pp = needed; |
| 1055 | } |
| 1056 | |
| 1057 | return TRUE; |
| 1058 | } |
| 1059 | |
| 1060 | /* Function to add a single symbol to the linker hash table. This is |
| 1061 | a wrapper around _bfd_generic_link_add_one_symbol which handles the |
| 1062 | tweaking needed for dynamic linking support. */ |
| 1063 | |
| 1064 | static bfd_boolean |
| 1065 | sunos_add_one_symbol (struct bfd_link_info *info, |
| 1066 | bfd *abfd, |
| 1067 | const char *name, |
| 1068 | flagword flags, |
| 1069 | asection *section, |
| 1070 | bfd_vma value, |
| 1071 | const char *string, |
| 1072 | bfd_boolean copy, |
| 1073 | bfd_boolean collect, |
| 1074 | struct bfd_link_hash_entry **hashp) |
| 1075 | { |
| 1076 | struct sunos_link_hash_entry *h; |
| 1077 | int new_flag; |
| 1078 | |
| 1079 | if ((flags & (BSF_INDIRECT | BSF_WARNING | BSF_CONSTRUCTOR)) != 0 |
| 1080 | || ! bfd_is_und_section (section)) |
| 1081 | h = sunos_link_hash_lookup (sunos_hash_table (info), name, TRUE, copy, |
| 1082 | FALSE); |
| 1083 | else |
| 1084 | h = ((struct sunos_link_hash_entry *) |
| 1085 | bfd_wrapped_link_hash_lookup (abfd, info, name, TRUE, copy, FALSE)); |
| 1086 | if (h == NULL) |
| 1087 | return FALSE; |
| 1088 | |
| 1089 | if (hashp != NULL) |
| 1090 | *hashp = (struct bfd_link_hash_entry *) h; |
| 1091 | |
| 1092 | /* Treat a common symbol in a dynamic object as defined in the .bss |
| 1093 | section of the dynamic object. We don't want to allocate space |
| 1094 | for it in our process image. */ |
| 1095 | if ((abfd->flags & DYNAMIC) != 0 |
| 1096 | && bfd_is_com_section (section)) |
| 1097 | section = obj_bsssec (abfd); |
| 1098 | |
| 1099 | if (! bfd_is_und_section (section) |
| 1100 | && h->root.root.type != bfd_link_hash_new |
| 1101 | && h->root.root.type != bfd_link_hash_undefined |
| 1102 | && h->root.root.type != bfd_link_hash_defweak) |
| 1103 | { |
| 1104 | /* We are defining the symbol, and it is already defined. This |
| 1105 | is a potential multiple definition error. */ |
| 1106 | if ((abfd->flags & DYNAMIC) != 0) |
| 1107 | { |
| 1108 | /* The definition we are adding is from a dynamic object. |
| 1109 | We do not want this new definition to override the |
| 1110 | existing definition, so we pretend it is just a |
| 1111 | reference. */ |
| 1112 | section = bfd_und_section_ptr; |
| 1113 | } |
| 1114 | else if (h->root.root.type == bfd_link_hash_defined |
| 1115 | && h->root.root.u.def.section->owner != NULL |
| 1116 | && (h->root.root.u.def.section->owner->flags & DYNAMIC) != 0) |
| 1117 | { |
| 1118 | /* The existing definition is from a dynamic object. We |
| 1119 | want to override it with the definition we just found. |
| 1120 | Clobber the existing definition. */ |
| 1121 | h->root.root.type = bfd_link_hash_undefined; |
| 1122 | h->root.root.u.undef.abfd = h->root.root.u.def.section->owner; |
| 1123 | } |
| 1124 | else if (h->root.root.type == bfd_link_hash_common |
| 1125 | && (h->root.root.u.c.p->section->owner->flags & DYNAMIC) != 0) |
| 1126 | { |
| 1127 | /* The existing definition is from a dynamic object. We |
| 1128 | want to override it with the definition we just found. |
| 1129 | Clobber the existing definition. We can't set it to new, |
| 1130 | because it is on the undefined list. */ |
| 1131 | h->root.root.type = bfd_link_hash_undefined; |
| 1132 | h->root.root.u.undef.abfd = h->root.root.u.c.p->section->owner; |
| 1133 | } |
| 1134 | } |
| 1135 | |
| 1136 | if ((abfd->flags & DYNAMIC) != 0 |
| 1137 | && abfd->xvec == info->hash->creator |
| 1138 | && (h->flags & SUNOS_CONSTRUCTOR) != 0) |
| 1139 | /* The existing symbol is a constructor symbol, and this symbol |
| 1140 | is from a dynamic object. A constructor symbol is actually a |
| 1141 | definition, although the type will be bfd_link_hash_undefined |
| 1142 | at this point. We want to ignore the definition from the |
| 1143 | dynamic object. */ |
| 1144 | section = bfd_und_section_ptr; |
| 1145 | else if ((flags & BSF_CONSTRUCTOR) != 0 |
| 1146 | && (abfd->flags & DYNAMIC) == 0 |
| 1147 | && h->root.root.type == bfd_link_hash_defined |
| 1148 | && h->root.root.u.def.section->owner != NULL |
| 1149 | && (h->root.root.u.def.section->owner->flags & DYNAMIC) != 0) |
| 1150 | /* The existing symbol is defined by a dynamic object, and this |
| 1151 | is a constructor symbol. As above, we want to force the use |
| 1152 | of the constructor symbol from the regular object. */ |
| 1153 | h->root.root.type = bfd_link_hash_new; |
| 1154 | |
| 1155 | /* Do the usual procedure for adding a symbol. */ |
| 1156 | if (! _bfd_generic_link_add_one_symbol (info, abfd, name, flags, section, |
| 1157 | value, string, copy, collect, |
| 1158 | hashp)) |
| 1159 | return FALSE; |
| 1160 | |
| 1161 | if (abfd->xvec == info->hash->creator) |
| 1162 | { |
| 1163 | /* Set a flag in the hash table entry indicating the type of |
| 1164 | reference or definition we just found. Keep a count of the |
| 1165 | number of dynamic symbols we find. A dynamic symbol is one |
| 1166 | which is referenced or defined by both a regular object and a |
| 1167 | shared object. */ |
| 1168 | if ((abfd->flags & DYNAMIC) == 0) |
| 1169 | { |
| 1170 | if (bfd_is_und_section (section)) |
| 1171 | new_flag = SUNOS_REF_REGULAR; |
| 1172 | else |
| 1173 | new_flag = SUNOS_DEF_REGULAR; |
| 1174 | } |
| 1175 | else |
| 1176 | { |
| 1177 | if (bfd_is_und_section (section)) |
| 1178 | new_flag = SUNOS_REF_DYNAMIC; |
| 1179 | else |
| 1180 | new_flag = SUNOS_DEF_DYNAMIC; |
| 1181 | } |
| 1182 | h->flags |= new_flag; |
| 1183 | |
| 1184 | if (h->dynindx == -1 |
| 1185 | && (h->flags & (SUNOS_DEF_REGULAR | SUNOS_REF_REGULAR)) != 0) |
| 1186 | { |
| 1187 | ++sunos_hash_table (info)->dynsymcount; |
| 1188 | h->dynindx = -2; |
| 1189 | } |
| 1190 | |
| 1191 | if ((flags & BSF_CONSTRUCTOR) != 0 |
| 1192 | && (abfd->flags & DYNAMIC) == 0) |
| 1193 | h->flags |= SUNOS_CONSTRUCTOR; |
| 1194 | } |
| 1195 | |
| 1196 | return TRUE; |
| 1197 | } |
| 1198 | |
| 1199 | extern const bfd_target MY (vec); |
| 1200 | |
| 1201 | /* Return the list of objects needed by BFD. */ |
| 1202 | |
| 1203 | struct bfd_link_needed_list * |
| 1204 | bfd_sunos_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED, |
| 1205 | struct bfd_link_info *info) |
| 1206 | { |
| 1207 | if (info->hash->creator != &MY (vec)) |
| 1208 | return NULL; |
| 1209 | return sunos_hash_table (info)->needed; |
| 1210 | } |
| 1211 | |
| 1212 | /* Record an assignment made to a symbol by a linker script. We need |
| 1213 | this in case some dynamic object refers to this symbol. */ |
| 1214 | |
| 1215 | bfd_boolean |
| 1216 | bfd_sunos_record_link_assignment (bfd *output_bfd, |
| 1217 | struct bfd_link_info *info, |
| 1218 | const char *name) |
| 1219 | { |
| 1220 | struct sunos_link_hash_entry *h; |
| 1221 | |
| 1222 | if (output_bfd->xvec != &MY(vec)) |
| 1223 | return TRUE; |
| 1224 | |
| 1225 | /* This is called after we have examined all the input objects. If |
| 1226 | the symbol does not exist, it merely means that no object refers |
| 1227 | to it, and we can just ignore it at this point. */ |
| 1228 | h = sunos_link_hash_lookup (sunos_hash_table (info), name, |
| 1229 | FALSE, FALSE, FALSE); |
| 1230 | if (h == NULL) |
| 1231 | return TRUE; |
| 1232 | |
| 1233 | /* In a shared library, the __DYNAMIC symbol does not appear in the |
| 1234 | dynamic symbol table. */ |
| 1235 | if (! info->shared || strcmp (name, "__DYNAMIC") != 0) |
| 1236 | { |
| 1237 | h->flags |= SUNOS_DEF_REGULAR; |
| 1238 | |
| 1239 | if (h->dynindx == -1) |
| 1240 | { |
| 1241 | ++sunos_hash_table (info)->dynsymcount; |
| 1242 | h->dynindx = -2; |
| 1243 | } |
| 1244 | } |
| 1245 | |
| 1246 | return TRUE; |
| 1247 | } |
| 1248 | |
| 1249 | /* Scan the relocs for an input section using standard relocs. We |
| 1250 | need to figure out what to do for each reloc against a dynamic |
| 1251 | symbol. If the symbol is in the .text section, an entry is made in |
| 1252 | the procedure linkage table. Note that this will do the wrong |
| 1253 | thing if the symbol is actually data; I don't think the Sun 3 |
| 1254 | native linker handles this case correctly either. If the symbol is |
| 1255 | not in the .text section, we must preserve the reloc as a dynamic |
| 1256 | reloc. FIXME: We should also handle the PIC relocs here by |
| 1257 | building global offset table entries. */ |
| 1258 | |
| 1259 | static bfd_boolean |
| 1260 | sunos_scan_std_relocs (struct bfd_link_info *info, |
| 1261 | bfd *abfd, |
| 1262 | asection *sec ATTRIBUTE_UNUSED, |
| 1263 | const struct reloc_std_external *relocs, |
| 1264 | bfd_size_type rel_size) |
| 1265 | { |
| 1266 | bfd *dynobj; |
| 1267 | asection *splt = NULL; |
| 1268 | asection *srel = NULL; |
| 1269 | struct sunos_link_hash_entry **sym_hashes; |
| 1270 | const struct reloc_std_external *rel, *relend; |
| 1271 | |
| 1272 | /* We only know how to handle m68k plt entries. */ |
| 1273 | if (bfd_get_arch (abfd) != bfd_arch_m68k) |
| 1274 | { |
| 1275 | bfd_set_error (bfd_error_invalid_target); |
| 1276 | return FALSE; |
| 1277 | } |
| 1278 | |
| 1279 | dynobj = NULL; |
| 1280 | |
| 1281 | sym_hashes = (struct sunos_link_hash_entry **) obj_aout_sym_hashes (abfd); |
| 1282 | |
| 1283 | relend = relocs + rel_size / RELOC_STD_SIZE; |
| 1284 | for (rel = relocs; rel < relend; rel++) |
| 1285 | { |
| 1286 | int r_index; |
| 1287 | struct sunos_link_hash_entry *h; |
| 1288 | |
| 1289 | /* We only want relocs against external symbols. */ |
| 1290 | if (bfd_header_big_endian (abfd)) |
| 1291 | { |
| 1292 | if ((rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG) == 0) |
| 1293 | continue; |
| 1294 | } |
| 1295 | else |
| 1296 | { |
| 1297 | if ((rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE) == 0) |
| 1298 | continue; |
| 1299 | } |
| 1300 | |
| 1301 | /* Get the symbol index. */ |
| 1302 | if (bfd_header_big_endian (abfd)) |
| 1303 | r_index = ((rel->r_index[0] << 16) |
| 1304 | | (rel->r_index[1] << 8) |
| 1305 | | rel->r_index[2]); |
| 1306 | else |
| 1307 | r_index = ((rel->r_index[2] << 16) |
| 1308 | | (rel->r_index[1] << 8) |
| 1309 | | rel->r_index[0]); |
| 1310 | |
| 1311 | /* Get the hash table entry. */ |
| 1312 | h = sym_hashes[r_index]; |
| 1313 | if (h == NULL) |
| 1314 | /* This should not normally happen, but it will in any case |
| 1315 | be caught in the relocation phase. */ |
| 1316 | continue; |
| 1317 | |
| 1318 | /* At this point common symbols have already been allocated, so |
| 1319 | we don't have to worry about them. We need to consider that |
| 1320 | we may have already seen this symbol and marked it undefined; |
| 1321 | if the symbol is really undefined, then SUNOS_DEF_DYNAMIC |
| 1322 | will be zero. */ |
| 1323 | if (h->root.root.type != bfd_link_hash_defined |
| 1324 | && h->root.root.type != bfd_link_hash_defweak |
| 1325 | && h->root.root.type != bfd_link_hash_undefined) |
| 1326 | continue; |
| 1327 | |
| 1328 | if ((h->flags & SUNOS_DEF_DYNAMIC) == 0 |
| 1329 | || (h->flags & SUNOS_DEF_REGULAR) != 0) |
| 1330 | continue; |
| 1331 | |
| 1332 | if (dynobj == NULL) |
| 1333 | { |
| 1334 | asection *sgot; |
| 1335 | |
| 1336 | if (! sunos_create_dynamic_sections (abfd, info, FALSE)) |
| 1337 | return FALSE; |
| 1338 | dynobj = sunos_hash_table (info)->dynobj; |
| 1339 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 1340 | srel = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 1341 | BFD_ASSERT (splt != NULL && srel != NULL); |
| 1342 | |
| 1343 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 1344 | BFD_ASSERT (sgot != NULL); |
| 1345 | if (sgot->size == 0) |
| 1346 | sgot->size = BYTES_IN_WORD; |
| 1347 | sunos_hash_table (info)->got_needed = TRUE; |
| 1348 | } |
| 1349 | |
| 1350 | BFD_ASSERT ((h->flags & SUNOS_REF_REGULAR) != 0); |
| 1351 | BFD_ASSERT (h->plt_offset != 0 |
| 1352 | || ((h->root.root.type == bfd_link_hash_defined |
| 1353 | || h->root.root.type == bfd_link_hash_defweak) |
| 1354 | ? (h->root.root.u.def.section->owner->flags |
| 1355 | & DYNAMIC) != 0 |
| 1356 | : (h->root.root.u.undef.abfd->flags & DYNAMIC) != 0)); |
| 1357 | |
| 1358 | /* This reloc is against a symbol defined only by a dynamic |
| 1359 | object. */ |
| 1360 | if (h->root.root.type == bfd_link_hash_undefined) |
| 1361 | /* Presumably this symbol was marked as being undefined by |
| 1362 | an earlier reloc. */ |
| 1363 | srel->size += RELOC_STD_SIZE; |
| 1364 | else if ((h->root.root.u.def.section->flags & SEC_CODE) == 0) |
| 1365 | { |
| 1366 | bfd *sub; |
| 1367 | |
| 1368 | /* This reloc is not in the .text section. It must be |
| 1369 | copied into the dynamic relocs. We mark the symbol as |
| 1370 | being undefined. */ |
| 1371 | srel->size += RELOC_STD_SIZE; |
| 1372 | sub = h->root.root.u.def.section->owner; |
| 1373 | h->root.root.type = bfd_link_hash_undefined; |
| 1374 | h->root.root.u.undef.abfd = sub; |
| 1375 | } |
| 1376 | else |
| 1377 | { |
| 1378 | /* This symbol is in the .text section. We must give it an |
| 1379 | entry in the procedure linkage table, if we have not |
| 1380 | already done so. We change the definition of the symbol |
| 1381 | to the .plt section; this will cause relocs against it to |
| 1382 | be handled correctly. */ |
| 1383 | if (h->plt_offset == 0) |
| 1384 | { |
| 1385 | if (splt->size == 0) |
| 1386 | splt->size = M68K_PLT_ENTRY_SIZE; |
| 1387 | h->plt_offset = splt->size; |
| 1388 | |
| 1389 | if ((h->flags & SUNOS_DEF_REGULAR) == 0) |
| 1390 | { |
| 1391 | h->root.root.u.def.section = splt; |
| 1392 | h->root.root.u.def.value = splt->size; |
| 1393 | } |
| 1394 | |
| 1395 | splt->size += M68K_PLT_ENTRY_SIZE; |
| 1396 | |
| 1397 | /* We may also need a dynamic reloc entry. */ |
| 1398 | if ((h->flags & SUNOS_DEF_REGULAR) == 0) |
| 1399 | srel->size += RELOC_STD_SIZE; |
| 1400 | } |
| 1401 | } |
| 1402 | } |
| 1403 | |
| 1404 | return TRUE; |
| 1405 | } |
| 1406 | |
| 1407 | /* Scan the relocs for an input section using extended relocs. We |
| 1408 | need to figure out what to do for each reloc against a dynamic |
| 1409 | symbol. If the reloc is a WDISP30, and the symbol is in the .text |
| 1410 | section, an entry is made in the procedure linkage table. |
| 1411 | Otherwise, we must preserve the reloc as a dynamic reloc. */ |
| 1412 | |
| 1413 | static bfd_boolean |
| 1414 | sunos_scan_ext_relocs (struct bfd_link_info *info, |
| 1415 | bfd *abfd, |
| 1416 | asection *sec ATTRIBUTE_UNUSED, |
| 1417 | const struct reloc_ext_external *relocs, |
| 1418 | bfd_size_type rel_size) |
| 1419 | { |
| 1420 | bfd *dynobj; |
| 1421 | struct sunos_link_hash_entry **sym_hashes; |
| 1422 | const struct reloc_ext_external *rel, *relend; |
| 1423 | asection *splt = NULL; |
| 1424 | asection *sgot = NULL; |
| 1425 | asection *srel = NULL; |
| 1426 | bfd_size_type amt; |
| 1427 | |
| 1428 | /* We only know how to handle SPARC plt entries. */ |
| 1429 | if (bfd_get_arch (abfd) != bfd_arch_sparc) |
| 1430 | { |
| 1431 | bfd_set_error (bfd_error_invalid_target); |
| 1432 | return FALSE; |
| 1433 | } |
| 1434 | |
| 1435 | dynobj = NULL; |
| 1436 | |
| 1437 | sym_hashes = (struct sunos_link_hash_entry **) obj_aout_sym_hashes (abfd); |
| 1438 | |
| 1439 | relend = relocs + rel_size / RELOC_EXT_SIZE; |
| 1440 | for (rel = relocs; rel < relend; rel++) |
| 1441 | { |
| 1442 | unsigned int r_index; |
| 1443 | int r_extern; |
| 1444 | int r_type; |
| 1445 | struct sunos_link_hash_entry *h = NULL; |
| 1446 | |
| 1447 | /* Swap in the reloc information. */ |
| 1448 | if (bfd_header_big_endian (abfd)) |
| 1449 | { |
| 1450 | r_index = ((rel->r_index[0] << 16) |
| 1451 | | (rel->r_index[1] << 8) |
| 1452 | | rel->r_index[2]); |
| 1453 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); |
| 1454 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) |
| 1455 | >> RELOC_EXT_BITS_TYPE_SH_BIG); |
| 1456 | } |
| 1457 | else |
| 1458 | { |
| 1459 | r_index = ((rel->r_index[2] << 16) |
| 1460 | | (rel->r_index[1] << 8) |
| 1461 | | rel->r_index[0]); |
| 1462 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); |
| 1463 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) |
| 1464 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); |
| 1465 | } |
| 1466 | |
| 1467 | if (r_extern) |
| 1468 | { |
| 1469 | h = sym_hashes[r_index]; |
| 1470 | if (h == NULL) |
| 1471 | { |
| 1472 | /* This should not normally happen, but it will in any |
| 1473 | case be caught in the relocation phase. */ |
| 1474 | continue; |
| 1475 | } |
| 1476 | } |
| 1477 | |
| 1478 | /* If this is a base relative reloc, we need to make an entry in |
| 1479 | the .got section. */ |
| 1480 | if (r_type == RELOC_BASE10 |
| 1481 | || r_type == RELOC_BASE13 |
| 1482 | || r_type == RELOC_BASE22) |
| 1483 | { |
| 1484 | if (dynobj == NULL) |
| 1485 | { |
| 1486 | if (! sunos_create_dynamic_sections (abfd, info, FALSE)) |
| 1487 | return FALSE; |
| 1488 | dynobj = sunos_hash_table (info)->dynobj; |
| 1489 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 1490 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 1491 | srel = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 1492 | BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); |
| 1493 | |
| 1494 | /* Make sure we have an initial entry in the .got table. */ |
| 1495 | if (sgot->size == 0) |
| 1496 | sgot->size = BYTES_IN_WORD; |
| 1497 | sunos_hash_table (info)->got_needed = TRUE; |
| 1498 | } |
| 1499 | |
| 1500 | if (r_extern) |
| 1501 | { |
| 1502 | if (h->got_offset != 0) |
| 1503 | continue; |
| 1504 | |
| 1505 | h->got_offset = sgot->size; |
| 1506 | } |
| 1507 | else |
| 1508 | { |
| 1509 | if (r_index >= bfd_get_symcount (abfd)) |
| 1510 | /* This is abnormal, but should be caught in the |
| 1511 | relocation phase. */ |
| 1512 | continue; |
| 1513 | |
| 1514 | if (adata (abfd).local_got_offsets == NULL) |
| 1515 | { |
| 1516 | amt = bfd_get_symcount (abfd); |
| 1517 | amt *= sizeof (bfd_vma); |
| 1518 | adata (abfd).local_got_offsets = bfd_zalloc (abfd, amt); |
| 1519 | if (adata (abfd).local_got_offsets == NULL) |
| 1520 | return FALSE; |
| 1521 | } |
| 1522 | |
| 1523 | if (adata (abfd).local_got_offsets[r_index] != 0) |
| 1524 | continue; |
| 1525 | |
| 1526 | adata (abfd).local_got_offsets[r_index] = sgot->size; |
| 1527 | } |
| 1528 | |
| 1529 | sgot->size += BYTES_IN_WORD; |
| 1530 | |
| 1531 | /* If we are making a shared library, or if the symbol is |
| 1532 | defined by a dynamic object, we will need a dynamic reloc |
| 1533 | entry. */ |
| 1534 | if (info->shared |
| 1535 | || (h != NULL |
| 1536 | && (h->flags & SUNOS_DEF_DYNAMIC) != 0 |
| 1537 | && (h->flags & SUNOS_DEF_REGULAR) == 0)) |
| 1538 | srel->size += RELOC_EXT_SIZE; |
| 1539 | |
| 1540 | continue; |
| 1541 | } |
| 1542 | |
| 1543 | /* Otherwise, we are only interested in relocs against symbols |
| 1544 | defined in dynamic objects but not in regular objects. We |
| 1545 | only need to consider relocs against external symbols. */ |
| 1546 | if (! r_extern) |
| 1547 | { |
| 1548 | /* But, if we are creating a shared library, we need to |
| 1549 | generate an absolute reloc. */ |
| 1550 | if (info->shared) |
| 1551 | { |
| 1552 | if (dynobj == NULL) |
| 1553 | { |
| 1554 | if (! sunos_create_dynamic_sections (abfd, info, TRUE)) |
| 1555 | return FALSE; |
| 1556 | dynobj = sunos_hash_table (info)->dynobj; |
| 1557 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 1558 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 1559 | srel = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 1560 | BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); |
| 1561 | } |
| 1562 | |
| 1563 | srel->size += RELOC_EXT_SIZE; |
| 1564 | } |
| 1565 | |
| 1566 | continue; |
| 1567 | } |
| 1568 | |
| 1569 | /* At this point common symbols have already been allocated, so |
| 1570 | we don't have to worry about them. We need to consider that |
| 1571 | we may have already seen this symbol and marked it undefined; |
| 1572 | if the symbol is really undefined, then SUNOS_DEF_DYNAMIC |
| 1573 | will be zero. */ |
| 1574 | if (h->root.root.type != bfd_link_hash_defined |
| 1575 | && h->root.root.type != bfd_link_hash_defweak |
| 1576 | && h->root.root.type != bfd_link_hash_undefined) |
| 1577 | continue; |
| 1578 | |
| 1579 | if (r_type != RELOC_JMP_TBL |
| 1580 | && ! info->shared |
| 1581 | && ((h->flags & SUNOS_DEF_DYNAMIC) == 0 |
| 1582 | || (h->flags & SUNOS_DEF_REGULAR) != 0)) |
| 1583 | continue; |
| 1584 | |
| 1585 | if (r_type == RELOC_JMP_TBL |
| 1586 | && ! info->shared |
| 1587 | && (h->flags & SUNOS_DEF_DYNAMIC) == 0 |
| 1588 | && (h->flags & SUNOS_DEF_REGULAR) == 0) |
| 1589 | { |
| 1590 | /* This symbol is apparently undefined. Don't do anything |
| 1591 | here; just let the relocation routine report an undefined |
| 1592 | symbol. */ |
| 1593 | continue; |
| 1594 | } |
| 1595 | |
| 1596 | if (strcmp (h->root.root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0) |
| 1597 | continue; |
| 1598 | |
| 1599 | if (dynobj == NULL) |
| 1600 | { |
| 1601 | if (! sunos_create_dynamic_sections (abfd, info, FALSE)) |
| 1602 | return FALSE; |
| 1603 | dynobj = sunos_hash_table (info)->dynobj; |
| 1604 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 1605 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 1606 | srel = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 1607 | BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); |
| 1608 | |
| 1609 | /* Make sure we have an initial entry in the .got table. */ |
| 1610 | if (sgot->size == 0) |
| 1611 | sgot->size = BYTES_IN_WORD; |
| 1612 | sunos_hash_table (info)->got_needed = TRUE; |
| 1613 | } |
| 1614 | |
| 1615 | BFD_ASSERT (r_type == RELOC_JMP_TBL |
| 1616 | || info->shared |
| 1617 | || (h->flags & SUNOS_REF_REGULAR) != 0); |
| 1618 | BFD_ASSERT (r_type == RELOC_JMP_TBL |
| 1619 | || info->shared |
| 1620 | || h->plt_offset != 0 |
| 1621 | || ((h->root.root.type == bfd_link_hash_defined |
| 1622 | || h->root.root.type == bfd_link_hash_defweak) |
| 1623 | ? (h->root.root.u.def.section->owner->flags |
| 1624 | & DYNAMIC) != 0 |
| 1625 | : (h->root.root.u.undef.abfd->flags & DYNAMIC) != 0)); |
| 1626 | |
| 1627 | /* This reloc is against a symbol defined only by a dynamic |
| 1628 | object, or it is a jump table reloc from PIC compiled code. */ |
| 1629 | |
| 1630 | if (r_type != RELOC_JMP_TBL |
| 1631 | && h->root.root.type == bfd_link_hash_undefined) |
| 1632 | /* Presumably this symbol was marked as being undefined by |
| 1633 | an earlier reloc. */ |
| 1634 | srel->size += RELOC_EXT_SIZE; |
| 1635 | |
| 1636 | else if (r_type != RELOC_JMP_TBL |
| 1637 | && (h->root.root.u.def.section->flags & SEC_CODE) == 0) |
| 1638 | { |
| 1639 | bfd *sub; |
| 1640 | |
| 1641 | /* This reloc is not in the .text section. It must be |
| 1642 | copied into the dynamic relocs. We mark the symbol as |
| 1643 | being undefined. */ |
| 1644 | srel->size += RELOC_EXT_SIZE; |
| 1645 | if ((h->flags & SUNOS_DEF_REGULAR) == 0) |
| 1646 | { |
| 1647 | sub = h->root.root.u.def.section->owner; |
| 1648 | h->root.root.type = bfd_link_hash_undefined; |
| 1649 | h->root.root.u.undef.abfd = sub; |
| 1650 | } |
| 1651 | } |
| 1652 | else |
| 1653 | { |
| 1654 | /* This symbol is in the .text section. We must give it an |
| 1655 | entry in the procedure linkage table, if we have not |
| 1656 | already done so. We change the definition of the symbol |
| 1657 | to the .plt section; this will cause relocs against it to |
| 1658 | be handled correctly. */ |
| 1659 | if (h->plt_offset == 0) |
| 1660 | { |
| 1661 | if (splt->size == 0) |
| 1662 | splt->size = SPARC_PLT_ENTRY_SIZE; |
| 1663 | h->plt_offset = splt->size; |
| 1664 | |
| 1665 | if ((h->flags & SUNOS_DEF_REGULAR) == 0) |
| 1666 | { |
| 1667 | if (h->root.root.type == bfd_link_hash_undefined) |
| 1668 | h->root.root.type = bfd_link_hash_defined; |
| 1669 | h->root.root.u.def.section = splt; |
| 1670 | h->root.root.u.def.value = splt->size; |
| 1671 | } |
| 1672 | |
| 1673 | splt->size += SPARC_PLT_ENTRY_SIZE; |
| 1674 | |
| 1675 | /* We will also need a dynamic reloc entry, unless this |
| 1676 | is a JMP_TBL reloc produced by linking PIC compiled |
| 1677 | code, and we are not making a shared library. */ |
| 1678 | if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0) |
| 1679 | srel->size += RELOC_EXT_SIZE; |
| 1680 | } |
| 1681 | |
| 1682 | /* If we are creating a shared library, we need to copy over |
| 1683 | any reloc other than a jump table reloc. */ |
| 1684 | if (info->shared && r_type != RELOC_JMP_TBL) |
| 1685 | srel->size += RELOC_EXT_SIZE; |
| 1686 | } |
| 1687 | } |
| 1688 | |
| 1689 | return TRUE; |
| 1690 | } |
| 1691 | |
| 1692 | /* Scan the relocs for an input section. */ |
| 1693 | |
| 1694 | static bfd_boolean |
| 1695 | sunos_scan_relocs (struct bfd_link_info *info, |
| 1696 | bfd *abfd, |
| 1697 | asection *sec, |
| 1698 | bfd_size_type rel_size) |
| 1699 | { |
| 1700 | void * relocs; |
| 1701 | void * free_relocs = NULL; |
| 1702 | |
| 1703 | if (rel_size == 0) |
| 1704 | return TRUE; |
| 1705 | |
| 1706 | if (! info->keep_memory) |
| 1707 | relocs = free_relocs = bfd_malloc (rel_size); |
| 1708 | else |
| 1709 | { |
| 1710 | struct aout_section_data_struct *n; |
| 1711 | bfd_size_type amt = sizeof (struct aout_section_data_struct); |
| 1712 | |
| 1713 | n = bfd_alloc (abfd, amt); |
| 1714 | if (n == NULL) |
| 1715 | relocs = NULL; |
| 1716 | else |
| 1717 | { |
| 1718 | set_aout_section_data (sec, n); |
| 1719 | relocs = bfd_malloc (rel_size); |
| 1720 | aout_section_data (sec)->relocs = relocs; |
| 1721 | } |
| 1722 | } |
| 1723 | if (relocs == NULL) |
| 1724 | return FALSE; |
| 1725 | |
| 1726 | if (bfd_seek (abfd, sec->rel_filepos, SEEK_SET) != 0 |
| 1727 | || bfd_bread (relocs, rel_size, abfd) != rel_size) |
| 1728 | goto error_return; |
| 1729 | |
| 1730 | if (obj_reloc_entry_size (abfd) == RELOC_STD_SIZE) |
| 1731 | { |
| 1732 | if (! sunos_scan_std_relocs (info, abfd, sec, |
| 1733 | (struct reloc_std_external *) relocs, |
| 1734 | rel_size)) |
| 1735 | goto error_return; |
| 1736 | } |
| 1737 | else |
| 1738 | { |
| 1739 | if (! sunos_scan_ext_relocs (info, abfd, sec, |
| 1740 | (struct reloc_ext_external *) relocs, |
| 1741 | rel_size)) |
| 1742 | goto error_return; |
| 1743 | } |
| 1744 | |
| 1745 | if (free_relocs != NULL) |
| 1746 | free (free_relocs); |
| 1747 | |
| 1748 | return TRUE; |
| 1749 | |
| 1750 | error_return: |
| 1751 | if (free_relocs != NULL) |
| 1752 | free (free_relocs); |
| 1753 | return FALSE; |
| 1754 | } |
| 1755 | |
| 1756 | /* Build the hash table of dynamic symbols, and to mark as written all |
| 1757 | symbols from dynamic objects which we do not plan to write out. */ |
| 1758 | |
| 1759 | static bfd_boolean |
| 1760 | sunos_scan_dynamic_symbol (struct sunos_link_hash_entry *h, void * data) |
| 1761 | { |
| 1762 | struct bfd_link_info *info = (struct bfd_link_info *) data; |
| 1763 | |
| 1764 | if (h->root.root.type == bfd_link_hash_warning) |
| 1765 | h = (struct sunos_link_hash_entry *) h->root.root.u.i.link; |
| 1766 | |
| 1767 | /* Set the written flag for symbols we do not want to write out as |
| 1768 | part of the regular symbol table. This is all symbols which are |
| 1769 | not defined in a regular object file. For some reason symbols |
| 1770 | which are referenced by a regular object and defined by a dynamic |
| 1771 | object do not seem to show up in the regular symbol table. It is |
| 1772 | possible for a symbol to have only SUNOS_REF_REGULAR set here, it |
| 1773 | is an undefined symbol which was turned into a common symbol |
| 1774 | because it was found in an archive object which was not included |
| 1775 | in the link. */ |
| 1776 | if ((h->flags & SUNOS_DEF_REGULAR) == 0 |
| 1777 | && (h->flags & SUNOS_DEF_DYNAMIC) != 0 |
| 1778 | && strcmp (h->root.root.root.string, "__DYNAMIC") != 0) |
| 1779 | h->root.written = TRUE; |
| 1780 | |
| 1781 | /* If this symbol is defined by a dynamic object and referenced by a |
| 1782 | regular object, see whether we gave it a reasonable value while |
| 1783 | scanning the relocs. */ |
| 1784 | if ((h->flags & SUNOS_DEF_REGULAR) == 0 |
| 1785 | && (h->flags & SUNOS_DEF_DYNAMIC) != 0 |
| 1786 | && (h->flags & SUNOS_REF_REGULAR) != 0) |
| 1787 | { |
| 1788 | if ((h->root.root.type == bfd_link_hash_defined |
| 1789 | || h->root.root.type == bfd_link_hash_defweak) |
| 1790 | && ((h->root.root.u.def.section->owner->flags & DYNAMIC) != 0) |
| 1791 | && h->root.root.u.def.section->output_section == NULL) |
| 1792 | { |
| 1793 | bfd *sub; |
| 1794 | |
| 1795 | /* This symbol is currently defined in a dynamic section |
| 1796 | which is not being put into the output file. This |
| 1797 | implies that there is no reloc against the symbol. I'm |
| 1798 | not sure why this case would ever occur. In any case, we |
| 1799 | change the symbol to be undefined. */ |
| 1800 | sub = h->root.root.u.def.section->owner; |
| 1801 | h->root.root.type = bfd_link_hash_undefined; |
| 1802 | h->root.root.u.undef.abfd = sub; |
| 1803 | } |
| 1804 | } |
| 1805 | |
| 1806 | /* If this symbol is defined or referenced by a regular file, add it |
| 1807 | to the dynamic symbols. */ |
| 1808 | if ((h->flags & (SUNOS_DEF_REGULAR | SUNOS_REF_REGULAR)) != 0) |
| 1809 | { |
| 1810 | asection *s; |
| 1811 | size_t len; |
| 1812 | bfd_byte *contents; |
| 1813 | unsigned char *name; |
| 1814 | unsigned long hash; |
| 1815 | bfd *dynobj; |
| 1816 | |
| 1817 | BFD_ASSERT (h->dynindx == -2); |
| 1818 | |
| 1819 | dynobj = sunos_hash_table (info)->dynobj; |
| 1820 | |
| 1821 | h->dynindx = sunos_hash_table (info)->dynsymcount; |
| 1822 | ++sunos_hash_table (info)->dynsymcount; |
| 1823 | |
| 1824 | len = strlen (h->root.root.root.string); |
| 1825 | |
| 1826 | /* We don't bother to construct a BFD hash table for the strings |
| 1827 | which are the names of the dynamic symbols. Using a hash |
| 1828 | table for the regular symbols is beneficial, because the |
| 1829 | regular symbols includes the debugging symbols, which have |
| 1830 | long names and are often duplicated in several object files. |
| 1831 | There are no debugging symbols in the dynamic symbols. */ |
| 1832 | s = bfd_get_section_by_name (dynobj, ".dynstr"); |
| 1833 | BFD_ASSERT (s != NULL); |
| 1834 | contents = bfd_realloc (s->contents, s->size + len + 1); |
| 1835 | if (contents == NULL) |
| 1836 | return FALSE; |
| 1837 | s->contents = contents; |
| 1838 | |
| 1839 | h->dynstr_index = s->size; |
| 1840 | strcpy ((char *) contents + s->size, h->root.root.root.string); |
| 1841 | s->size += len + 1; |
| 1842 | |
| 1843 | /* Add it to the dynamic hash table. */ |
| 1844 | name = (unsigned char *) h->root.root.root.string; |
| 1845 | hash = 0; |
| 1846 | while (*name != '\0') |
| 1847 | hash = (hash << 1) + *name++; |
| 1848 | hash &= 0x7fffffff; |
| 1849 | hash %= sunos_hash_table (info)->bucketcount; |
| 1850 | |
| 1851 | s = bfd_get_section_by_name (dynobj, ".hash"); |
| 1852 | BFD_ASSERT (s != NULL); |
| 1853 | |
| 1854 | if (GET_SWORD (dynobj, s->contents + hash * HASH_ENTRY_SIZE) == -1) |
| 1855 | PUT_WORD (dynobj, h->dynindx, s->contents + hash * HASH_ENTRY_SIZE); |
| 1856 | else |
| 1857 | { |
| 1858 | bfd_vma next; |
| 1859 | |
| 1860 | next = GET_WORD (dynobj, |
| 1861 | (s->contents |
| 1862 | + hash * HASH_ENTRY_SIZE |
| 1863 | + BYTES_IN_WORD)); |
| 1864 | PUT_WORD (dynobj, s->size / HASH_ENTRY_SIZE, |
| 1865 | s->contents + hash * HASH_ENTRY_SIZE + BYTES_IN_WORD); |
| 1866 | PUT_WORD (dynobj, h->dynindx, s->contents + s->size); |
| 1867 | PUT_WORD (dynobj, next, s->contents + s->size + BYTES_IN_WORD); |
| 1868 | s->size += HASH_ENTRY_SIZE; |
| 1869 | } |
| 1870 | } |
| 1871 | |
| 1872 | return TRUE; |
| 1873 | } |
| 1874 | |
| 1875 | /* Set up the sizes and contents of the dynamic sections created in |
| 1876 | sunos_add_dynamic_symbols. This is called by the SunOS linker |
| 1877 | emulation before_allocation routine. We must set the sizes of the |
| 1878 | sections before the linker sets the addresses of the various |
| 1879 | sections. This unfortunately requires reading all the relocs so |
| 1880 | that we can work out which ones need to become dynamic relocs. If |
| 1881 | info->keep_memory is TRUE, we keep the relocs in memory; otherwise, |
| 1882 | we discard them, and will read them again later. */ |
| 1883 | |
| 1884 | bfd_boolean |
| 1885 | bfd_sunos_size_dynamic_sections (bfd *output_bfd, |
| 1886 | struct bfd_link_info *info, |
| 1887 | asection **sdynptr, |
| 1888 | asection **sneedptr, |
| 1889 | asection **srulesptr) |
| 1890 | { |
| 1891 | bfd *dynobj; |
| 1892 | bfd_size_type dynsymcount; |
| 1893 | struct sunos_link_hash_entry *h; |
| 1894 | asection *s; |
| 1895 | size_t bucketcount; |
| 1896 | bfd_size_type hashalloc; |
| 1897 | size_t i; |
| 1898 | bfd *sub; |
| 1899 | |
| 1900 | *sdynptr = NULL; |
| 1901 | *sneedptr = NULL; |
| 1902 | *srulesptr = NULL; |
| 1903 | |
| 1904 | if (info->relocatable) |
| 1905 | return TRUE; |
| 1906 | |
| 1907 | if (output_bfd->xvec != &MY(vec)) |
| 1908 | return TRUE; |
| 1909 | |
| 1910 | /* Look through all the input BFD's and read their relocs. It would |
| 1911 | be better if we didn't have to do this, but there is no other way |
| 1912 | to determine the number of dynamic relocs we need, and, more |
| 1913 | importantly, there is no other way to know which symbols should |
| 1914 | get an entry in the procedure linkage table. */ |
| 1915 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) |
| 1916 | { |
| 1917 | if ((sub->flags & DYNAMIC) == 0 |
| 1918 | && sub->xvec == output_bfd->xvec) |
| 1919 | { |
| 1920 | if (! sunos_scan_relocs (info, sub, obj_textsec (sub), |
| 1921 | exec_hdr (sub)->a_trsize) |
| 1922 | || ! sunos_scan_relocs (info, sub, obj_datasec (sub), |
| 1923 | exec_hdr (sub)->a_drsize)) |
| 1924 | return FALSE; |
| 1925 | } |
| 1926 | } |
| 1927 | |
| 1928 | dynobj = sunos_hash_table (info)->dynobj; |
| 1929 | dynsymcount = sunos_hash_table (info)->dynsymcount; |
| 1930 | |
| 1931 | /* If there were no dynamic objects in the link, and we don't need |
| 1932 | to build a global offset table, there is nothing to do here. */ |
| 1933 | if (! sunos_hash_table (info)->dynamic_sections_needed |
| 1934 | && ! sunos_hash_table (info)->got_needed) |
| 1935 | return TRUE; |
| 1936 | |
| 1937 | /* If __GLOBAL_OFFSET_TABLE_ was mentioned, define it. */ |
| 1938 | h = sunos_link_hash_lookup (sunos_hash_table (info), |
| 1939 | "__GLOBAL_OFFSET_TABLE_", FALSE, FALSE, FALSE); |
| 1940 | if (h != NULL && (h->flags & SUNOS_REF_REGULAR) != 0) |
| 1941 | { |
| 1942 | h->flags |= SUNOS_DEF_REGULAR; |
| 1943 | if (h->dynindx == -1) |
| 1944 | { |
| 1945 | ++sunos_hash_table (info)->dynsymcount; |
| 1946 | h->dynindx = -2; |
| 1947 | } |
| 1948 | h->root.root.type = bfd_link_hash_defined; |
| 1949 | h->root.root.u.def.section = bfd_get_section_by_name (dynobj, ".got"); |
| 1950 | |
| 1951 | /* If the .got section is more than 0x1000 bytes, we set |
| 1952 | __GLOBAL_OFFSET_TABLE_ to be 0x1000 bytes into the section, |
| 1953 | so that 13 bit relocations have a greater chance of working. */ |
| 1954 | s = bfd_get_section_by_name (dynobj, ".got"); |
| 1955 | BFD_ASSERT (s != NULL); |
| 1956 | if (s->size >= 0x1000) |
| 1957 | h->root.root.u.def.value = 0x1000; |
| 1958 | else |
| 1959 | h->root.root.u.def.value = 0; |
| 1960 | |
| 1961 | sunos_hash_table (info)->got_base = h->root.root.u.def.value; |
| 1962 | } |
| 1963 | |
| 1964 | /* If there are any shared objects in the link, then we need to set |
| 1965 | up the dynamic linking information. */ |
| 1966 | if (sunos_hash_table (info)->dynamic_sections_needed) |
| 1967 | { |
| 1968 | *sdynptr = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 1969 | |
| 1970 | /* The .dynamic section is always the same size. */ |
| 1971 | s = *sdynptr; |
| 1972 | BFD_ASSERT (s != NULL); |
| 1973 | s->size = (sizeof (struct external_sun4_dynamic) |
| 1974 | + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE |
| 1975 | + sizeof (struct external_sun4_dynamic_link)); |
| 1976 | |
| 1977 | /* Set the size of the .dynsym and .hash sections. We counted |
| 1978 | the number of dynamic symbols as we read the input files. We |
| 1979 | will build the dynamic symbol table (.dynsym) and the hash |
| 1980 | table (.hash) when we build the final symbol table, because |
| 1981 | until then we do not know the correct value to give the |
| 1982 | symbols. We build the dynamic symbol string table (.dynstr) |
| 1983 | in a traversal of the symbol table using |
| 1984 | sunos_scan_dynamic_symbol. */ |
| 1985 | s = bfd_get_section_by_name (dynobj, ".dynsym"); |
| 1986 | BFD_ASSERT (s != NULL); |
| 1987 | s->size = dynsymcount * sizeof (struct external_nlist); |
| 1988 | s->contents = bfd_alloc (output_bfd, s->size); |
| 1989 | if (s->contents == NULL && s->size != 0) |
| 1990 | return FALSE; |
| 1991 | |
| 1992 | /* The number of buckets is just the number of symbols divided |
| 1993 | by four. To compute the final size of the hash table, we |
| 1994 | must actually compute the hash table. Normally we need |
| 1995 | exactly as many entries in the hash table as there are |
| 1996 | dynamic symbols, but if some of the buckets are not used we |
| 1997 | will need additional entries. In the worst case, every |
| 1998 | symbol will hash to the same bucket, and we will need |
| 1999 | BUCKETCOUNT - 1 extra entries. */ |
| 2000 | if (dynsymcount >= 4) |
| 2001 | bucketcount = dynsymcount / 4; |
| 2002 | else if (dynsymcount > 0) |
| 2003 | bucketcount = dynsymcount; |
| 2004 | else |
| 2005 | bucketcount = 1; |
| 2006 | s = bfd_get_section_by_name (dynobj, ".hash"); |
| 2007 | BFD_ASSERT (s != NULL); |
| 2008 | hashalloc = (dynsymcount + bucketcount - 1) * HASH_ENTRY_SIZE; |
| 2009 | s->contents = bfd_zalloc (dynobj, hashalloc); |
| 2010 | if (s->contents == NULL && dynsymcount > 0) |
| 2011 | return FALSE; |
| 2012 | for (i = 0; i < bucketcount; i++) |
| 2013 | PUT_WORD (output_bfd, (bfd_vma) -1, s->contents + i * HASH_ENTRY_SIZE); |
| 2014 | s->size = bucketcount * HASH_ENTRY_SIZE; |
| 2015 | |
| 2016 | sunos_hash_table (info)->bucketcount = bucketcount; |
| 2017 | |
| 2018 | /* Scan all the symbols, place them in the dynamic symbol table, |
| 2019 | and build the dynamic hash table. We reuse dynsymcount as a |
| 2020 | counter for the number of symbols we have added so far. */ |
| 2021 | sunos_hash_table (info)->dynsymcount = 0; |
| 2022 | sunos_link_hash_traverse (sunos_hash_table (info), |
| 2023 | sunos_scan_dynamic_symbol, |
| 2024 | (void *) info); |
| 2025 | BFD_ASSERT (sunos_hash_table (info)->dynsymcount == dynsymcount); |
| 2026 | |
| 2027 | /* The SunOS native linker seems to align the total size of the |
| 2028 | symbol strings to a multiple of 8. I don't know if this is |
| 2029 | important, but it can't hurt much. */ |
| 2030 | s = bfd_get_section_by_name (dynobj, ".dynstr"); |
| 2031 | BFD_ASSERT (s != NULL); |
| 2032 | if ((s->size & 7) != 0) |
| 2033 | { |
| 2034 | bfd_size_type add; |
| 2035 | bfd_byte *contents; |
| 2036 | |
| 2037 | add = 8 - (s->size & 7); |
| 2038 | contents = bfd_realloc (s->contents, s->size + add); |
| 2039 | if (contents == NULL) |
| 2040 | return FALSE; |
| 2041 | memset (contents + s->size, 0, (size_t) add); |
| 2042 | s->contents = contents; |
| 2043 | s->size += add; |
| 2044 | } |
| 2045 | } |
| 2046 | |
| 2047 | /* Now that we have worked out the sizes of the procedure linkage |
| 2048 | table and the dynamic relocs, allocate storage for them. */ |
| 2049 | s = bfd_get_section_by_name (dynobj, ".plt"); |
| 2050 | BFD_ASSERT (s != NULL); |
| 2051 | if (s->size != 0) |
| 2052 | { |
| 2053 | s->contents = bfd_alloc (dynobj, s->size); |
| 2054 | if (s->contents == NULL) |
| 2055 | return FALSE; |
| 2056 | |
| 2057 | /* Fill in the first entry in the table. */ |
| 2058 | switch (bfd_get_arch (dynobj)) |
| 2059 | { |
| 2060 | case bfd_arch_sparc: |
| 2061 | memcpy (s->contents, sparc_plt_first_entry, SPARC_PLT_ENTRY_SIZE); |
| 2062 | break; |
| 2063 | |
| 2064 | case bfd_arch_m68k: |
| 2065 | memcpy (s->contents, m68k_plt_first_entry, M68K_PLT_ENTRY_SIZE); |
| 2066 | break; |
| 2067 | |
| 2068 | default: |
| 2069 | abort (); |
| 2070 | } |
| 2071 | } |
| 2072 | |
| 2073 | s = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 2074 | if (s->size != 0) |
| 2075 | { |
| 2076 | s->contents = bfd_alloc (dynobj, s->size); |
| 2077 | if (s->contents == NULL) |
| 2078 | return FALSE; |
| 2079 | } |
| 2080 | /* We use the reloc_count field to keep track of how many of the |
| 2081 | relocs we have output so far. */ |
| 2082 | s->reloc_count = 0; |
| 2083 | |
| 2084 | /* Make space for the global offset table. */ |
| 2085 | s = bfd_get_section_by_name (dynobj, ".got"); |
| 2086 | s->contents = bfd_alloc (dynobj, s->size); |
| 2087 | if (s->contents == NULL) |
| 2088 | return FALSE; |
| 2089 | |
| 2090 | *sneedptr = bfd_get_section_by_name (dynobj, ".need"); |
| 2091 | *srulesptr = bfd_get_section_by_name (dynobj, ".rules"); |
| 2092 | |
| 2093 | return TRUE; |
| 2094 | } |
| 2095 | |
| 2096 | /* Link a dynamic object. We actually don't have anything to do at |
| 2097 | this point. This entry point exists to prevent the regular linker |
| 2098 | code from doing anything with the object. */ |
| 2099 | |
| 2100 | static bfd_boolean |
| 2101 | sunos_link_dynamic_object (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 2102 | bfd *abfd ATTRIBUTE_UNUSED) |
| 2103 | { |
| 2104 | return TRUE; |
| 2105 | } |
| 2106 | |
| 2107 | /* Write out a dynamic symbol. This is called by the final traversal |
| 2108 | over the symbol table. */ |
| 2109 | |
| 2110 | static bfd_boolean |
| 2111 | sunos_write_dynamic_symbol (bfd *output_bfd, |
| 2112 | struct bfd_link_info *info, |
| 2113 | struct aout_link_hash_entry *harg) |
| 2114 | { |
| 2115 | struct sunos_link_hash_entry *h = (struct sunos_link_hash_entry *) harg; |
| 2116 | int type; |
| 2117 | bfd_vma val; |
| 2118 | asection *s; |
| 2119 | struct external_nlist *outsym; |
| 2120 | |
| 2121 | /* If this symbol is in the procedure linkage table, fill in the |
| 2122 | table entry. */ |
| 2123 | if (h->plt_offset != 0) |
| 2124 | { |
| 2125 | bfd *dynobj; |
| 2126 | asection *splt; |
| 2127 | bfd_byte *p; |
| 2128 | bfd_vma r_address; |
| 2129 | |
| 2130 | dynobj = sunos_hash_table (info)->dynobj; |
| 2131 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 2132 | p = splt->contents + h->plt_offset; |
| 2133 | |
| 2134 | s = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 2135 | |
| 2136 | r_address = (splt->output_section->vma |
| 2137 | + splt->output_offset |
| 2138 | + h->plt_offset); |
| 2139 | |
| 2140 | switch (bfd_get_arch (output_bfd)) |
| 2141 | { |
| 2142 | case bfd_arch_sparc: |
| 2143 | if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0) |
| 2144 | { |
| 2145 | bfd_put_32 (output_bfd, SPARC_PLT_ENTRY_WORD0, p); |
| 2146 | bfd_put_32 (output_bfd, |
| 2147 | (SPARC_PLT_ENTRY_WORD1 |
| 2148 | + (((- (h->plt_offset + 4) >> 2) |
| 2149 | & 0x3fffffff))), |
| 2150 | p + 4); |
| 2151 | bfd_put_32 (output_bfd, SPARC_PLT_ENTRY_WORD2 + s->reloc_count, |
| 2152 | p + 8); |
| 2153 | } |
| 2154 | else |
| 2155 | { |
| 2156 | val = (h->root.root.u.def.section->output_section->vma |
| 2157 | + h->root.root.u.def.section->output_offset |
| 2158 | + h->root.root.u.def.value); |
| 2159 | bfd_put_32 (output_bfd, |
| 2160 | SPARC_PLT_PIC_WORD0 + ((val >> 10) & 0x3fffff), |
| 2161 | p); |
| 2162 | bfd_put_32 (output_bfd, |
| 2163 | SPARC_PLT_PIC_WORD1 + (val & 0x3ff), |
| 2164 | p + 4); |
| 2165 | bfd_put_32 (output_bfd, SPARC_PLT_PIC_WORD2, p + 8); |
| 2166 | } |
| 2167 | break; |
| 2168 | |
| 2169 | case bfd_arch_m68k: |
| 2170 | if (! info->shared && (h->flags & SUNOS_DEF_REGULAR) != 0) |
| 2171 | abort (); |
| 2172 | bfd_put_16 (output_bfd, M68K_PLT_ENTRY_WORD0, p); |
| 2173 | bfd_put_32 (output_bfd, (- (h->plt_offset + 2)), p + 2); |
| 2174 | bfd_put_16 (output_bfd, (bfd_vma) s->reloc_count, p + 6); |
| 2175 | r_address += 2; |
| 2176 | break; |
| 2177 | |
| 2178 | default: |
| 2179 | abort (); |
| 2180 | } |
| 2181 | |
| 2182 | /* We also need to add a jump table reloc, unless this is the |
| 2183 | result of a JMP_TBL reloc from PIC compiled code. */ |
| 2184 | if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0) |
| 2185 | { |
| 2186 | BFD_ASSERT (h->dynindx >= 0); |
| 2187 | BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) |
| 2188 | < s->size); |
| 2189 | p = s->contents + s->reloc_count * obj_reloc_entry_size (output_bfd); |
| 2190 | if (obj_reloc_entry_size (output_bfd) == RELOC_STD_SIZE) |
| 2191 | { |
| 2192 | struct reloc_std_external *srel; |
| 2193 | |
| 2194 | srel = (struct reloc_std_external *) p; |
| 2195 | PUT_WORD (output_bfd, r_address, srel->r_address); |
| 2196 | if (bfd_header_big_endian (output_bfd)) |
| 2197 | { |
| 2198 | srel->r_index[0] = (bfd_byte) (h->dynindx >> 16); |
| 2199 | srel->r_index[1] = (bfd_byte) (h->dynindx >> 8); |
| 2200 | srel->r_index[2] = (bfd_byte) (h->dynindx); |
| 2201 | srel->r_type[0] = (RELOC_STD_BITS_EXTERN_BIG |
| 2202 | | RELOC_STD_BITS_JMPTABLE_BIG); |
| 2203 | } |
| 2204 | else |
| 2205 | { |
| 2206 | srel->r_index[2] = (bfd_byte) (h->dynindx >> 16); |
| 2207 | srel->r_index[1] = (bfd_byte) (h->dynindx >> 8); |
| 2208 | srel->r_index[0] = (bfd_byte)h->dynindx; |
| 2209 | srel->r_type[0] = (RELOC_STD_BITS_EXTERN_LITTLE |
| 2210 | | RELOC_STD_BITS_JMPTABLE_LITTLE); |
| 2211 | } |
| 2212 | } |
| 2213 | else |
| 2214 | { |
| 2215 | struct reloc_ext_external *erel; |
| 2216 | |
| 2217 | erel = (struct reloc_ext_external *) p; |
| 2218 | PUT_WORD (output_bfd, r_address, erel->r_address); |
| 2219 | if (bfd_header_big_endian (output_bfd)) |
| 2220 | { |
| 2221 | erel->r_index[0] = (bfd_byte) (h->dynindx >> 16); |
| 2222 | erel->r_index[1] = (bfd_byte) (h->dynindx >> 8); |
| 2223 | erel->r_index[2] = (bfd_byte)h->dynindx; |
| 2224 | erel->r_type[0] = |
| 2225 | (RELOC_EXT_BITS_EXTERN_BIG |
| 2226 | | (RELOC_JMP_SLOT << RELOC_EXT_BITS_TYPE_SH_BIG)); |
| 2227 | } |
| 2228 | else |
| 2229 | { |
| 2230 | erel->r_index[2] = (bfd_byte) (h->dynindx >> 16); |
| 2231 | erel->r_index[1] = (bfd_byte) (h->dynindx >> 8); |
| 2232 | erel->r_index[0] = (bfd_byte)h->dynindx; |
| 2233 | erel->r_type[0] = |
| 2234 | (RELOC_EXT_BITS_EXTERN_LITTLE |
| 2235 | | (RELOC_JMP_SLOT << RELOC_EXT_BITS_TYPE_SH_LITTLE)); |
| 2236 | } |
| 2237 | PUT_WORD (output_bfd, (bfd_vma) 0, erel->r_addend); |
| 2238 | } |
| 2239 | |
| 2240 | ++s->reloc_count; |
| 2241 | } |
| 2242 | } |
| 2243 | |
| 2244 | /* If this is not a dynamic symbol, we don't have to do anything |
| 2245 | else. We only check this after handling the PLT entry, because |
| 2246 | we can have a PLT entry for a nondynamic symbol when linking PIC |
| 2247 | compiled code from a regular object. */ |
| 2248 | if (h->dynindx < 0) |
| 2249 | return TRUE; |
| 2250 | |
| 2251 | switch (h->root.root.type) |
| 2252 | { |
| 2253 | default: |
| 2254 | case bfd_link_hash_new: |
| 2255 | abort (); |
| 2256 | /* Avoid variable not initialized warnings. */ |
| 2257 | return TRUE; |
| 2258 | case bfd_link_hash_undefined: |
| 2259 | type = N_UNDF | N_EXT; |
| 2260 | val = 0; |
| 2261 | break; |
| 2262 | case bfd_link_hash_defined: |
| 2263 | case bfd_link_hash_defweak: |
| 2264 | { |
| 2265 | asection *sec; |
| 2266 | asection *output_section; |
| 2267 | |
| 2268 | sec = h->root.root.u.def.section; |
| 2269 | output_section = sec->output_section; |
| 2270 | BFD_ASSERT (bfd_is_abs_section (output_section) |
| 2271 | || output_section->owner == output_bfd); |
| 2272 | if (h->plt_offset != 0 |
| 2273 | && (h->flags & SUNOS_DEF_REGULAR) == 0) |
| 2274 | { |
| 2275 | type = N_UNDF | N_EXT; |
| 2276 | val = 0; |
| 2277 | } |
| 2278 | else |
| 2279 | { |
| 2280 | if (output_section == obj_textsec (output_bfd)) |
| 2281 | type = (h->root.root.type == bfd_link_hash_defined |
| 2282 | ? N_TEXT |
| 2283 | : N_WEAKT); |
| 2284 | else if (output_section == obj_datasec (output_bfd)) |
| 2285 | type = (h->root.root.type == bfd_link_hash_defined |
| 2286 | ? N_DATA |
| 2287 | : N_WEAKD); |
| 2288 | else if (output_section == obj_bsssec (output_bfd)) |
| 2289 | type = (h->root.root.type == bfd_link_hash_defined |
| 2290 | ? N_BSS |
| 2291 | : N_WEAKB); |
| 2292 | else |
| 2293 | type = (h->root.root.type == bfd_link_hash_defined |
| 2294 | ? N_ABS |
| 2295 | : N_WEAKA); |
| 2296 | type |= N_EXT; |
| 2297 | val = (h->root.root.u.def.value |
| 2298 | + output_section->vma |
| 2299 | + sec->output_offset); |
| 2300 | } |
| 2301 | } |
| 2302 | break; |
| 2303 | case bfd_link_hash_common: |
| 2304 | type = N_UNDF | N_EXT; |
| 2305 | val = h->root.root.u.c.size; |
| 2306 | break; |
| 2307 | case bfd_link_hash_undefweak: |
| 2308 | type = N_WEAKU; |
| 2309 | val = 0; |
| 2310 | break; |
| 2311 | case bfd_link_hash_indirect: |
| 2312 | case bfd_link_hash_warning: |
| 2313 | /* FIXME: Ignore these for now. The circumstances under which |
| 2314 | they should be written out are not clear to me. */ |
| 2315 | return TRUE; |
| 2316 | } |
| 2317 | |
| 2318 | s = bfd_get_section_by_name (sunos_hash_table (info)->dynobj, ".dynsym"); |
| 2319 | BFD_ASSERT (s != NULL); |
| 2320 | outsym = ((struct external_nlist *) |
| 2321 | (s->contents + h->dynindx * EXTERNAL_NLIST_SIZE)); |
| 2322 | |
| 2323 | H_PUT_8 (output_bfd, type, outsym->e_type); |
| 2324 | H_PUT_8 (output_bfd, 0, outsym->e_other); |
| 2325 | |
| 2326 | /* FIXME: The native linker doesn't use 0 for desc. It seems to use |
| 2327 | one less than the desc value in the shared library, although that |
| 2328 | seems unlikely. */ |
| 2329 | H_PUT_16 (output_bfd, 0, outsym->e_desc); |
| 2330 | |
| 2331 | PUT_WORD (output_bfd, h->dynstr_index, outsym->e_strx); |
| 2332 | PUT_WORD (output_bfd, val, outsym->e_value); |
| 2333 | |
| 2334 | return TRUE; |
| 2335 | } |
| 2336 | |
| 2337 | /* This is called for each reloc against an external symbol. If this |
| 2338 | is a reloc which are are going to copy as a dynamic reloc, then |
| 2339 | copy it over, and tell the caller to not bother processing this |
| 2340 | reloc. */ |
| 2341 | |
| 2342 | static bfd_boolean |
| 2343 | sunos_check_dynamic_reloc (struct bfd_link_info *info, |
| 2344 | bfd *input_bfd, |
| 2345 | asection *input_section, |
| 2346 | struct aout_link_hash_entry *harg, |
| 2347 | void * reloc, |
| 2348 | bfd_byte *contents ATTRIBUTE_UNUSED, |
| 2349 | bfd_boolean *skip, |
| 2350 | bfd_vma *relocationp) |
| 2351 | { |
| 2352 | struct sunos_link_hash_entry *h = (struct sunos_link_hash_entry *) harg; |
| 2353 | bfd *dynobj; |
| 2354 | bfd_boolean baserel; |
| 2355 | bfd_boolean jmptbl; |
| 2356 | bfd_boolean pcrel; |
| 2357 | asection *s; |
| 2358 | bfd_byte *p; |
| 2359 | long indx; |
| 2360 | |
| 2361 | *skip = FALSE; |
| 2362 | |
| 2363 | dynobj = sunos_hash_table (info)->dynobj; |
| 2364 | |
| 2365 | if (h != NULL |
| 2366 | && h->plt_offset != 0 |
| 2367 | && (info->shared |
| 2368 | || (h->flags & SUNOS_DEF_REGULAR) == 0)) |
| 2369 | { |
| 2370 | asection *splt; |
| 2371 | |
| 2372 | /* Redirect the relocation to the PLT entry. */ |
| 2373 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 2374 | *relocationp = (splt->output_section->vma |
| 2375 | + splt->output_offset |
| 2376 | + h->plt_offset); |
| 2377 | } |
| 2378 | |
| 2379 | if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) |
| 2380 | { |
| 2381 | struct reloc_std_external *srel; |
| 2382 | |
| 2383 | srel = (struct reloc_std_external *) reloc; |
| 2384 | if (bfd_header_big_endian (input_bfd)) |
| 2385 | { |
| 2386 | baserel = (0 != (srel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); |
| 2387 | jmptbl = (0 != (srel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); |
| 2388 | pcrel = (0 != (srel->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); |
| 2389 | } |
| 2390 | else |
| 2391 | { |
| 2392 | baserel = (0 != (srel->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); |
| 2393 | jmptbl = (0 != (srel->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); |
| 2394 | pcrel = (0 != (srel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); |
| 2395 | } |
| 2396 | } |
| 2397 | else |
| 2398 | { |
| 2399 | struct reloc_ext_external *erel; |
| 2400 | int r_type; |
| 2401 | |
| 2402 | erel = (struct reloc_ext_external *) reloc; |
| 2403 | if (bfd_header_big_endian (input_bfd)) |
| 2404 | r_type = ((erel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) |
| 2405 | >> RELOC_EXT_BITS_TYPE_SH_BIG); |
| 2406 | else |
| 2407 | r_type = ((erel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) |
| 2408 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); |
| 2409 | baserel = (r_type == RELOC_BASE10 |
| 2410 | || r_type == RELOC_BASE13 |
| 2411 | || r_type == RELOC_BASE22); |
| 2412 | jmptbl = r_type == RELOC_JMP_TBL; |
| 2413 | pcrel = (r_type == RELOC_DISP8 |
| 2414 | || r_type == RELOC_DISP16 |
| 2415 | || r_type == RELOC_DISP32 |
| 2416 | || r_type == RELOC_WDISP30 |
| 2417 | || r_type == RELOC_WDISP22); |
| 2418 | /* We don't consider the PC10 and PC22 types to be PC relative, |
| 2419 | because they are pcrel_offset. */ |
| 2420 | } |
| 2421 | |
| 2422 | if (baserel) |
| 2423 | { |
| 2424 | bfd_vma *got_offsetp; |
| 2425 | asection *sgot; |
| 2426 | |
| 2427 | if (h != NULL) |
| 2428 | got_offsetp = &h->got_offset; |
| 2429 | else if (adata (input_bfd).local_got_offsets == NULL) |
| 2430 | got_offsetp = NULL; |
| 2431 | else |
| 2432 | { |
| 2433 | struct reloc_std_external *srel; |
| 2434 | int r_index; |
| 2435 | |
| 2436 | srel = (struct reloc_std_external *) reloc; |
| 2437 | if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) |
| 2438 | { |
| 2439 | if (bfd_header_big_endian (input_bfd)) |
| 2440 | r_index = ((srel->r_index[0] << 16) |
| 2441 | | (srel->r_index[1] << 8) |
| 2442 | | srel->r_index[2]); |
| 2443 | else |
| 2444 | r_index = ((srel->r_index[2] << 16) |
| 2445 | | (srel->r_index[1] << 8) |
| 2446 | | srel->r_index[0]); |
| 2447 | } |
| 2448 | else |
| 2449 | { |
| 2450 | struct reloc_ext_external *erel; |
| 2451 | |
| 2452 | erel = (struct reloc_ext_external *) reloc; |
| 2453 | if (bfd_header_big_endian (input_bfd)) |
| 2454 | r_index = ((erel->r_index[0] << 16) |
| 2455 | | (erel->r_index[1] << 8) |
| 2456 | | erel->r_index[2]); |
| 2457 | else |
| 2458 | r_index = ((erel->r_index[2] << 16) |
| 2459 | | (erel->r_index[1] << 8) |
| 2460 | | erel->r_index[0]); |
| 2461 | } |
| 2462 | |
| 2463 | got_offsetp = adata (input_bfd).local_got_offsets + r_index; |
| 2464 | } |
| 2465 | |
| 2466 | BFD_ASSERT (got_offsetp != NULL && *got_offsetp != 0); |
| 2467 | |
| 2468 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 2469 | |
| 2470 | /* We set the least significant bit to indicate whether we have |
| 2471 | already initialized the GOT entry. */ |
| 2472 | if ((*got_offsetp & 1) == 0) |
| 2473 | { |
| 2474 | if (h == NULL |
| 2475 | || (! info->shared |
| 2476 | && ((h->flags & SUNOS_DEF_DYNAMIC) == 0 |
| 2477 | || (h->flags & SUNOS_DEF_REGULAR) != 0))) |
| 2478 | PUT_WORD (dynobj, *relocationp, sgot->contents + *got_offsetp); |
| 2479 | else |
| 2480 | PUT_WORD (dynobj, 0, sgot->contents + *got_offsetp); |
| 2481 | |
| 2482 | if (info->shared |
| 2483 | || (h != NULL |
| 2484 | && (h->flags & SUNOS_DEF_DYNAMIC) != 0 |
| 2485 | && (h->flags & SUNOS_DEF_REGULAR) == 0)) |
| 2486 | { |
| 2487 | /* We need to create a GLOB_DAT or 32 reloc to tell the |
| 2488 | dynamic linker to fill in this entry in the table. */ |
| 2489 | |
| 2490 | s = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 2491 | BFD_ASSERT (s != NULL); |
| 2492 | BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) |
| 2493 | < s->size); |
| 2494 | |
| 2495 | p = (s->contents |
| 2496 | + s->reloc_count * obj_reloc_entry_size (dynobj)); |
| 2497 | |
| 2498 | if (h != NULL) |
| 2499 | indx = h->dynindx; |
| 2500 | else |
| 2501 | indx = 0; |
| 2502 | |
| 2503 | if (obj_reloc_entry_size (dynobj) == RELOC_STD_SIZE) |
| 2504 | { |
| 2505 | struct reloc_std_external *srel; |
| 2506 | |
| 2507 | srel = (struct reloc_std_external *) p; |
| 2508 | PUT_WORD (dynobj, |
| 2509 | (*got_offsetp |
| 2510 | + sgot->output_section->vma |
| 2511 | + sgot->output_offset), |
| 2512 | srel->r_address); |
| 2513 | if (bfd_header_big_endian (dynobj)) |
| 2514 | { |
| 2515 | srel->r_index[0] = (bfd_byte) (indx >> 16); |
| 2516 | srel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2517 | srel->r_index[2] = (bfd_byte)indx; |
| 2518 | if (h == NULL) |
| 2519 | srel->r_type[0] = 2 << RELOC_STD_BITS_LENGTH_SH_BIG; |
| 2520 | else |
| 2521 | srel->r_type[0] = |
| 2522 | (RELOC_STD_BITS_EXTERN_BIG |
| 2523 | | RELOC_STD_BITS_BASEREL_BIG |
| 2524 | | RELOC_STD_BITS_RELATIVE_BIG |
| 2525 | | (2 << RELOC_STD_BITS_LENGTH_SH_BIG)); |
| 2526 | } |
| 2527 | else |
| 2528 | { |
| 2529 | srel->r_index[2] = (bfd_byte) (indx >> 16); |
| 2530 | srel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2531 | srel->r_index[0] = (bfd_byte)indx; |
| 2532 | if (h == NULL) |
| 2533 | srel->r_type[0] = 2 << RELOC_STD_BITS_LENGTH_SH_LITTLE; |
| 2534 | else |
| 2535 | srel->r_type[0] = |
| 2536 | (RELOC_STD_BITS_EXTERN_LITTLE |
| 2537 | | RELOC_STD_BITS_BASEREL_LITTLE |
| 2538 | | RELOC_STD_BITS_RELATIVE_LITTLE |
| 2539 | | (2 << RELOC_STD_BITS_LENGTH_SH_LITTLE)); |
| 2540 | } |
| 2541 | } |
| 2542 | else |
| 2543 | { |
| 2544 | struct reloc_ext_external *erel; |
| 2545 | |
| 2546 | erel = (struct reloc_ext_external *) p; |
| 2547 | PUT_WORD (dynobj, |
| 2548 | (*got_offsetp |
| 2549 | + sgot->output_section->vma |
| 2550 | + sgot->output_offset), |
| 2551 | erel->r_address); |
| 2552 | if (bfd_header_big_endian (dynobj)) |
| 2553 | { |
| 2554 | erel->r_index[0] = (bfd_byte) (indx >> 16); |
| 2555 | erel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2556 | erel->r_index[2] = (bfd_byte)indx; |
| 2557 | if (h == NULL) |
| 2558 | erel->r_type[0] = |
| 2559 | RELOC_32 << RELOC_EXT_BITS_TYPE_SH_BIG; |
| 2560 | else |
| 2561 | erel->r_type[0] = |
| 2562 | (RELOC_EXT_BITS_EXTERN_BIG |
| 2563 | | (RELOC_GLOB_DAT << RELOC_EXT_BITS_TYPE_SH_BIG)); |
| 2564 | } |
| 2565 | else |
| 2566 | { |
| 2567 | erel->r_index[2] = (bfd_byte) (indx >> 16); |
| 2568 | erel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2569 | erel->r_index[0] = (bfd_byte)indx; |
| 2570 | if (h == NULL) |
| 2571 | erel->r_type[0] = |
| 2572 | RELOC_32 << RELOC_EXT_BITS_TYPE_SH_LITTLE; |
| 2573 | else |
| 2574 | erel->r_type[0] = |
| 2575 | (RELOC_EXT_BITS_EXTERN_LITTLE |
| 2576 | | (RELOC_GLOB_DAT |
| 2577 | << RELOC_EXT_BITS_TYPE_SH_LITTLE)); |
| 2578 | } |
| 2579 | PUT_WORD (dynobj, 0, erel->r_addend); |
| 2580 | } |
| 2581 | |
| 2582 | ++s->reloc_count; |
| 2583 | } |
| 2584 | |
| 2585 | *got_offsetp |= 1; |
| 2586 | } |
| 2587 | |
| 2588 | *relocationp = (sgot->vma |
| 2589 | + (*got_offsetp &~ (bfd_vma) 1) |
| 2590 | - sunos_hash_table (info)->got_base); |
| 2591 | |
| 2592 | /* There is nothing else to do for a base relative reloc. */ |
| 2593 | return TRUE; |
| 2594 | } |
| 2595 | |
| 2596 | if (! sunos_hash_table (info)->dynamic_sections_needed) |
| 2597 | return TRUE; |
| 2598 | if (! info->shared) |
| 2599 | { |
| 2600 | if (h == NULL |
| 2601 | || h->dynindx == -1 |
| 2602 | || h->root.root.type != bfd_link_hash_undefined |
| 2603 | || (h->flags & SUNOS_DEF_REGULAR) != 0 |
| 2604 | || (h->flags & SUNOS_DEF_DYNAMIC) == 0 |
| 2605 | || (h->root.root.u.undef.abfd->flags & DYNAMIC) == 0) |
| 2606 | return TRUE; |
| 2607 | } |
| 2608 | else |
| 2609 | { |
| 2610 | if (h != NULL |
| 2611 | && (h->dynindx == -1 |
| 2612 | || jmptbl |
| 2613 | || strcmp (h->root.root.root.string, |
| 2614 | "__GLOBAL_OFFSET_TABLE_") == 0)) |
| 2615 | return TRUE; |
| 2616 | } |
| 2617 | |
| 2618 | /* It looks like this is a reloc we are supposed to copy. */ |
| 2619 | |
| 2620 | s = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 2621 | BFD_ASSERT (s != NULL); |
| 2622 | BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) < s->size); |
| 2623 | |
| 2624 | p = s->contents + s->reloc_count * obj_reloc_entry_size (dynobj); |
| 2625 | |
| 2626 | /* Copy the reloc over. */ |
| 2627 | memcpy (p, reloc, obj_reloc_entry_size (dynobj)); |
| 2628 | |
| 2629 | if (h != NULL) |
| 2630 | indx = h->dynindx; |
| 2631 | else |
| 2632 | indx = 0; |
| 2633 | |
| 2634 | /* Adjust the address and symbol index. */ |
| 2635 | if (obj_reloc_entry_size (dynobj) == RELOC_STD_SIZE) |
| 2636 | { |
| 2637 | struct reloc_std_external *srel; |
| 2638 | |
| 2639 | srel = (struct reloc_std_external *) p; |
| 2640 | PUT_WORD (dynobj, |
| 2641 | (GET_WORD (dynobj, srel->r_address) |
| 2642 | + input_section->output_section->vma |
| 2643 | + input_section->output_offset), |
| 2644 | srel->r_address); |
| 2645 | if (bfd_header_big_endian (dynobj)) |
| 2646 | { |
| 2647 | srel->r_index[0] = (bfd_byte) (indx >> 16); |
| 2648 | srel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2649 | srel->r_index[2] = (bfd_byte)indx; |
| 2650 | } |
| 2651 | else |
| 2652 | { |
| 2653 | srel->r_index[2] = (bfd_byte) (indx >> 16); |
| 2654 | srel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2655 | srel->r_index[0] = (bfd_byte)indx; |
| 2656 | } |
| 2657 | /* FIXME: We may have to change the addend for a PC relative |
| 2658 | reloc. */ |
| 2659 | } |
| 2660 | else |
| 2661 | { |
| 2662 | struct reloc_ext_external *erel; |
| 2663 | |
| 2664 | erel = (struct reloc_ext_external *) p; |
| 2665 | PUT_WORD (dynobj, |
| 2666 | (GET_WORD (dynobj, erel->r_address) |
| 2667 | + input_section->output_section->vma |
| 2668 | + input_section->output_offset), |
| 2669 | erel->r_address); |
| 2670 | if (bfd_header_big_endian (dynobj)) |
| 2671 | { |
| 2672 | erel->r_index[0] = (bfd_byte) (indx >> 16); |
| 2673 | erel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2674 | erel->r_index[2] = (bfd_byte)indx; |
| 2675 | } |
| 2676 | else |
| 2677 | { |
| 2678 | erel->r_index[2] = (bfd_byte) (indx >> 16); |
| 2679 | erel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2680 | erel->r_index[0] = (bfd_byte)indx; |
| 2681 | } |
| 2682 | if (pcrel && h != NULL) |
| 2683 | { |
| 2684 | /* Adjust the addend for the change in address. */ |
| 2685 | PUT_WORD (dynobj, |
| 2686 | (GET_WORD (dynobj, erel->r_addend) |
| 2687 | - (input_section->output_section->vma |
| 2688 | + input_section->output_offset |
| 2689 | - input_section->vma)), |
| 2690 | erel->r_addend); |
| 2691 | } |
| 2692 | } |
| 2693 | |
| 2694 | ++s->reloc_count; |
| 2695 | |
| 2696 | if (h != NULL) |
| 2697 | *skip = TRUE; |
| 2698 | |
| 2699 | return TRUE; |
| 2700 | } |
| 2701 | |
| 2702 | /* Finish up the dynamic linking information. */ |
| 2703 | |
| 2704 | static bfd_boolean |
| 2705 | sunos_finish_dynamic_link (bfd *abfd, struct bfd_link_info *info) |
| 2706 | { |
| 2707 | bfd *dynobj; |
| 2708 | asection *o; |
| 2709 | asection *s; |
| 2710 | asection *sdyn; |
| 2711 | |
| 2712 | if (! sunos_hash_table (info)->dynamic_sections_needed |
| 2713 | && ! sunos_hash_table (info)->got_needed) |
| 2714 | return TRUE; |
| 2715 | |
| 2716 | dynobj = sunos_hash_table (info)->dynobj; |
| 2717 | |
| 2718 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 2719 | BFD_ASSERT (sdyn != NULL); |
| 2720 | |
| 2721 | /* Finish up the .need section. The linker emulation code filled it |
| 2722 | in, but with offsets from the start of the section instead of |
| 2723 | real addresses. Now that we know the section location, we can |
| 2724 | fill in the final values. */ |
| 2725 | s = bfd_get_section_by_name (dynobj, ".need"); |
| 2726 | if (s != NULL && s->size != 0) |
| 2727 | { |
| 2728 | file_ptr filepos; |
| 2729 | bfd_byte *p; |
| 2730 | |
| 2731 | filepos = s->output_section->filepos + s->output_offset; |
| 2732 | p = s->contents; |
| 2733 | while (1) |
| 2734 | { |
| 2735 | bfd_vma val; |
| 2736 | |
| 2737 | PUT_WORD (dynobj, GET_WORD (dynobj, p) + filepos, p); |
| 2738 | val = GET_WORD (dynobj, p + 12); |
| 2739 | if (val == 0) |
| 2740 | break; |
| 2741 | PUT_WORD (dynobj, val + filepos, p + 12); |
| 2742 | p += 16; |
| 2743 | } |
| 2744 | } |
| 2745 | |
| 2746 | /* The first entry in the .got section is the address of the |
| 2747 | dynamic information, unless this is a shared library. */ |
| 2748 | s = bfd_get_section_by_name (dynobj, ".got"); |
| 2749 | BFD_ASSERT (s != NULL); |
| 2750 | if (info->shared || sdyn->size == 0) |
| 2751 | PUT_WORD (dynobj, 0, s->contents); |
| 2752 | else |
| 2753 | PUT_WORD (dynobj, sdyn->output_section->vma + sdyn->output_offset, |
| 2754 | s->contents); |
| 2755 | |
| 2756 | for (o = dynobj->sections; o != NULL; o = o->next) |
| 2757 | { |
| 2758 | if ((o->flags & SEC_HAS_CONTENTS) != 0 |
| 2759 | && o->contents != NULL) |
| 2760 | { |
| 2761 | BFD_ASSERT (o->output_section != NULL |
| 2762 | && o->output_section->owner == abfd); |
| 2763 | if (! bfd_set_section_contents (abfd, o->output_section, |
| 2764 | o->contents, |
| 2765 | (file_ptr) o->output_offset, |
| 2766 | o->size)) |
| 2767 | return FALSE; |
| 2768 | } |
| 2769 | } |
| 2770 | |
| 2771 | if (sdyn->size > 0) |
| 2772 | { |
| 2773 | struct external_sun4_dynamic esd; |
| 2774 | struct external_sun4_dynamic_link esdl; |
| 2775 | file_ptr pos; |
| 2776 | |
| 2777 | /* Finish up the dynamic link information. */ |
| 2778 | PUT_WORD (dynobj, (bfd_vma) 3, esd.ld_version); |
| 2779 | PUT_WORD (dynobj, |
| 2780 | sdyn->output_section->vma + sdyn->output_offset + sizeof esd, |
| 2781 | esd.ldd); |
| 2782 | PUT_WORD (dynobj, |
| 2783 | (sdyn->output_section->vma |
| 2784 | + sdyn->output_offset |
| 2785 | + sizeof esd |
| 2786 | + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE), |
| 2787 | esd.ld); |
| 2788 | |
| 2789 | if (! bfd_set_section_contents (abfd, sdyn->output_section, &esd, |
| 2790 | (file_ptr) sdyn->output_offset, |
| 2791 | (bfd_size_type) sizeof esd)) |
| 2792 | return FALSE; |
| 2793 | |
| 2794 | PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_loaded); |
| 2795 | |
| 2796 | s = bfd_get_section_by_name (dynobj, ".need"); |
| 2797 | if (s == NULL || s->size == 0) |
| 2798 | PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_need); |
| 2799 | else |
| 2800 | PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| 2801 | esdl.ld_need); |
| 2802 | |
| 2803 | s = bfd_get_section_by_name (dynobj, ".rules"); |
| 2804 | if (s == NULL || s->size == 0) |
| 2805 | PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_rules); |
| 2806 | else |
| 2807 | PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| 2808 | esdl.ld_rules); |
| 2809 | |
| 2810 | s = bfd_get_section_by_name (dynobj, ".got"); |
| 2811 | BFD_ASSERT (s != NULL); |
| 2812 | PUT_WORD (dynobj, s->output_section->vma + s->output_offset, |
| 2813 | esdl.ld_got); |
| 2814 | |
| 2815 | s = bfd_get_section_by_name (dynobj, ".plt"); |
| 2816 | BFD_ASSERT (s != NULL); |
| 2817 | PUT_WORD (dynobj, s->output_section->vma + s->output_offset, |
| 2818 | esdl.ld_plt); |
| 2819 | PUT_WORD (dynobj, s->size, esdl.ld_plt_sz); |
| 2820 | |
| 2821 | s = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 2822 | BFD_ASSERT (s != NULL); |
| 2823 | BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) |
| 2824 | == s->size); |
| 2825 | PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| 2826 | esdl.ld_rel); |
| 2827 | |
| 2828 | s = bfd_get_section_by_name (dynobj, ".hash"); |
| 2829 | BFD_ASSERT (s != NULL); |
| 2830 | PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| 2831 | esdl.ld_hash); |
| 2832 | |
| 2833 | s = bfd_get_section_by_name (dynobj, ".dynsym"); |
| 2834 | BFD_ASSERT (s != NULL); |
| 2835 | PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| 2836 | esdl.ld_stab); |
| 2837 | |
| 2838 | PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_stab_hash); |
| 2839 | |
| 2840 | PUT_WORD (dynobj, (bfd_vma) sunos_hash_table (info)->bucketcount, |
| 2841 | esdl.ld_buckets); |
| 2842 | |
| 2843 | s = bfd_get_section_by_name (dynobj, ".dynstr"); |
| 2844 | BFD_ASSERT (s != NULL); |
| 2845 | PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| 2846 | esdl.ld_symbols); |
| 2847 | PUT_WORD (dynobj, s->size, esdl.ld_symb_size); |
| 2848 | |
| 2849 | /* The size of the text area is the size of the .text section |
| 2850 | rounded up to a page boundary. FIXME: Should the page size be |
| 2851 | conditional on something? */ |
| 2852 | PUT_WORD (dynobj, |
| 2853 | BFD_ALIGN (obj_textsec (abfd)->size, 0x2000), |
| 2854 | esdl.ld_text); |
| 2855 | |
| 2856 | pos = sdyn->output_offset; |
| 2857 | pos += sizeof esd + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE; |
| 2858 | if (! bfd_set_section_contents (abfd, sdyn->output_section, &esdl, |
| 2859 | pos, (bfd_size_type) sizeof esdl)) |
| 2860 | return FALSE; |
| 2861 | |
| 2862 | abfd->flags |= DYNAMIC; |
| 2863 | } |
| 2864 | |
| 2865 | return TRUE; |
| 2866 | } |