| 1 | /* BFD backend for SunOS binaries. |
| 2 | Copyright 1990, 1991, 1992, 1994, 1995, 1996, 1997, 1998, 2000, 2001, |
| 3 | 2002, 2003, 2004 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 02111-1307, 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 | /* Static routines defined in this file. */ |
| 34 | |
| 35 | static bfd_boolean sunos_read_dynamic_info PARAMS ((bfd *)); |
| 36 | static long sunos_get_dynamic_symtab_upper_bound PARAMS ((bfd *)); |
| 37 | static bfd_boolean sunos_slurp_dynamic_symtab PARAMS ((bfd *)); |
| 38 | static long sunos_canonicalize_dynamic_symtab PARAMS ((bfd *, asymbol **)); |
| 39 | static long sunos_get_dynamic_reloc_upper_bound PARAMS ((bfd *)); |
| 40 | static long sunos_canonicalize_dynamic_reloc |
| 41 | PARAMS ((bfd *, arelent **, asymbol **)); |
| 42 | static struct bfd_hash_entry *sunos_link_hash_newfunc |
| 43 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
| 44 | static struct bfd_link_hash_table *sunos_link_hash_table_create |
| 45 | PARAMS ((bfd *)); |
| 46 | static bfd_boolean sunos_create_dynamic_sections |
| 47 | PARAMS ((bfd *, struct bfd_link_info *, bfd_boolean)); |
| 48 | static bfd_boolean sunos_add_dynamic_symbols |
| 49 | PARAMS ((bfd *, struct bfd_link_info *, struct external_nlist **, |
| 50 | bfd_size_type *, char **)); |
| 51 | static bfd_boolean sunos_add_one_symbol |
| 52 | PARAMS ((struct bfd_link_info *, bfd *, const char *, flagword, asection *, |
| 53 | bfd_vma, const char *, bfd_boolean, bfd_boolean, |
| 54 | struct bfd_link_hash_entry **)); |
| 55 | static bfd_boolean sunos_scan_relocs |
| 56 | PARAMS ((struct bfd_link_info *, bfd *, asection *, bfd_size_type)); |
| 57 | static bfd_boolean sunos_scan_std_relocs |
| 58 | PARAMS ((struct bfd_link_info *, bfd *, asection *, |
| 59 | const struct reloc_std_external *, bfd_size_type)); |
| 60 | static bfd_boolean sunos_scan_ext_relocs |
| 61 | PARAMS ((struct bfd_link_info *, bfd *, asection *, |
| 62 | const struct reloc_ext_external *, bfd_size_type)); |
| 63 | static bfd_boolean sunos_link_dynamic_object |
| 64 | PARAMS ((struct bfd_link_info *, bfd *)); |
| 65 | static bfd_boolean sunos_write_dynamic_symbol |
| 66 | PARAMS ((bfd *, struct bfd_link_info *, struct aout_link_hash_entry *)); |
| 67 | static bfd_boolean sunos_check_dynamic_reloc |
| 68 | PARAMS ((struct bfd_link_info *, bfd *, asection *, |
| 69 | struct aout_link_hash_entry *, PTR, bfd_byte *, bfd_boolean *, |
| 70 | bfd_vma *)); |
| 71 | static bfd_boolean sunos_finish_dynamic_link |
| 72 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 73 | |
| 74 | #define MY_get_dynamic_symtab_upper_bound sunos_get_dynamic_symtab_upper_bound |
| 75 | #define MY_canonicalize_dynamic_symtab sunos_canonicalize_dynamic_symtab |
| 76 | #define MY_get_synthetic_symtab _bfd_nodynamic_get_synthetic_symtab |
| 77 | #define MY_get_dynamic_reloc_upper_bound sunos_get_dynamic_reloc_upper_bound |
| 78 | #define MY_canonicalize_dynamic_reloc sunos_canonicalize_dynamic_reloc |
| 79 | #define MY_bfd_link_hash_table_create sunos_link_hash_table_create |
| 80 | #define MY_add_dynamic_symbols sunos_add_dynamic_symbols |
| 81 | #define MY_add_one_symbol sunos_add_one_symbol |
| 82 | #define MY_link_dynamic_object sunos_link_dynamic_object |
| 83 | #define MY_write_dynamic_symbol sunos_write_dynamic_symbol |
| 84 | #define MY_check_dynamic_reloc sunos_check_dynamic_reloc |
| 85 | #define MY_finish_dynamic_link sunos_finish_dynamic_link |
| 86 | |
| 87 | /* ??? Where should this go? */ |
| 88 | #define MACHTYPE_OK(mtype) \ |
| 89 | (((mtype) == M_SPARC && bfd_lookup_arch (bfd_arch_sparc, 0) != NULL) \ |
| 90 | || ((mtype) == M_SPARCLET \ |
| 91 | && bfd_lookup_arch (bfd_arch_sparc, bfd_mach_sparc_sparclet) != NULL) \ |
| 92 | || ((mtype) == M_SPARCLITE_LE \ |
| 93 | && bfd_lookup_arch (bfd_arch_sparc, bfd_mach_sparc_sparclet) != NULL) \ |
| 94 | || (((mtype) == M_UNKNOWN || (mtype) == M_68010 || (mtype) == M_68020) \ |
| 95 | && bfd_lookup_arch (bfd_arch_m68k, 0) != NULL)) |
| 96 | |
| 97 | /* Include the usual a.out support. */ |
| 98 | #include "aoutf1.h" |
| 99 | |
| 100 | /* The SunOS 4.1.4 /usr/include/locale.h defines valid as a macro. */ |
| 101 | #undef valid |
| 102 | |
| 103 | /* SunOS shared library support. We store a pointer to this structure |
| 104 | in obj_aout_dynamic_info (abfd). */ |
| 105 | |
| 106 | struct sunos_dynamic_info |
| 107 | { |
| 108 | /* Whether we found any dynamic information. */ |
| 109 | bfd_boolean valid; |
| 110 | /* Dynamic information. */ |
| 111 | struct internal_sun4_dynamic_link dyninfo; |
| 112 | /* Number of dynamic symbols. */ |
| 113 | unsigned long dynsym_count; |
| 114 | /* Read in nlists for dynamic symbols. */ |
| 115 | struct external_nlist *dynsym; |
| 116 | /* asymbol structures for dynamic symbols. */ |
| 117 | aout_symbol_type *canonical_dynsym; |
| 118 | /* Read in dynamic string table. */ |
| 119 | char *dynstr; |
| 120 | /* Number of dynamic relocs. */ |
| 121 | unsigned long dynrel_count; |
| 122 | /* Read in dynamic relocs. This may be reloc_std_external or |
| 123 | reloc_ext_external. */ |
| 124 | PTR dynrel; |
| 125 | /* arelent structures for dynamic relocs. */ |
| 126 | arelent *canonical_dynrel; |
| 127 | }; |
| 128 | |
| 129 | /* The hash table of dynamic symbols is composed of two word entries. |
| 130 | See include/aout/sun4.h for details. */ |
| 131 | |
| 132 | #define HASH_ENTRY_SIZE (2 * BYTES_IN_WORD) |
| 133 | |
| 134 | /* Read in the basic dynamic information. This locates the __DYNAMIC |
| 135 | structure and uses it to find the dynamic_link structure. It |
| 136 | creates and saves a sunos_dynamic_info structure. If it can't find |
| 137 | __DYNAMIC, it sets the valid field of the sunos_dynamic_info |
| 138 | structure to FALSE to avoid doing this work again. */ |
| 139 | |
| 140 | static bfd_boolean |
| 141 | sunos_read_dynamic_info (abfd) |
| 142 | bfd *abfd; |
| 143 | { |
| 144 | struct sunos_dynamic_info *info; |
| 145 | asection *dynsec; |
| 146 | bfd_vma dynoff; |
| 147 | struct external_sun4_dynamic dyninfo; |
| 148 | unsigned long dynver; |
| 149 | struct external_sun4_dynamic_link linkinfo; |
| 150 | bfd_size_type amt; |
| 151 | |
| 152 | if (obj_aout_dynamic_info (abfd) != (PTR) NULL) |
| 153 | return TRUE; |
| 154 | |
| 155 | if ((abfd->flags & DYNAMIC) == 0) |
| 156 | { |
| 157 | bfd_set_error (bfd_error_invalid_operation); |
| 158 | return FALSE; |
| 159 | } |
| 160 | |
| 161 | amt = sizeof (struct sunos_dynamic_info); |
| 162 | info = (struct sunos_dynamic_info *) bfd_zalloc (abfd, amt); |
| 163 | if (!info) |
| 164 | return FALSE; |
| 165 | info->valid = FALSE; |
| 166 | info->dynsym = NULL; |
| 167 | info->dynstr = NULL; |
| 168 | info->canonical_dynsym = NULL; |
| 169 | info->dynrel = NULL; |
| 170 | info->canonical_dynrel = NULL; |
| 171 | obj_aout_dynamic_info (abfd) = (PTR) info; |
| 172 | |
| 173 | /* This code used to look for the __DYNAMIC symbol to locate the dynamic |
| 174 | linking information. |
| 175 | However this inhibits recovering the dynamic symbols from a |
| 176 | stripped object file, so blindly assume that the dynamic linking |
| 177 | information is located at the start of the data section. |
| 178 | We could verify this assumption later by looking through the dynamic |
| 179 | symbols for the __DYNAMIC symbol. */ |
| 180 | if ((abfd->flags & DYNAMIC) == 0) |
| 181 | return TRUE; |
| 182 | if (! bfd_get_section_contents (abfd, obj_datasec (abfd), (PTR) &dyninfo, |
| 183 | (file_ptr) 0, |
| 184 | (bfd_size_type) sizeof dyninfo)) |
| 185 | return TRUE; |
| 186 | |
| 187 | dynver = GET_WORD (abfd, dyninfo.ld_version); |
| 188 | if (dynver != 2 && dynver != 3) |
| 189 | return TRUE; |
| 190 | |
| 191 | dynoff = GET_WORD (abfd, dyninfo.ld); |
| 192 | |
| 193 | /* dynoff is a virtual address. It is probably always in the .data |
| 194 | section, but this code should work even if it moves. */ |
| 195 | if (dynoff < bfd_get_section_vma (abfd, obj_datasec (abfd))) |
| 196 | dynsec = obj_textsec (abfd); |
| 197 | else |
| 198 | dynsec = obj_datasec (abfd); |
| 199 | dynoff -= bfd_get_section_vma (abfd, dynsec); |
| 200 | if (dynoff > dynsec->size) |
| 201 | return TRUE; |
| 202 | |
| 203 | /* This executable appears to be dynamically linked in a way that we |
| 204 | can understand. */ |
| 205 | if (! bfd_get_section_contents (abfd, dynsec, (PTR) &linkinfo, |
| 206 | (file_ptr) dynoff, |
| 207 | (bfd_size_type) sizeof linkinfo)) |
| 208 | return TRUE; |
| 209 | |
| 210 | /* Swap in the dynamic link information. */ |
| 211 | info->dyninfo.ld_loaded = GET_WORD (abfd, linkinfo.ld_loaded); |
| 212 | info->dyninfo.ld_need = GET_WORD (abfd, linkinfo.ld_need); |
| 213 | info->dyninfo.ld_rules = GET_WORD (abfd, linkinfo.ld_rules); |
| 214 | info->dyninfo.ld_got = GET_WORD (abfd, linkinfo.ld_got); |
| 215 | info->dyninfo.ld_plt = GET_WORD (abfd, linkinfo.ld_plt); |
| 216 | info->dyninfo.ld_rel = GET_WORD (abfd, linkinfo.ld_rel); |
| 217 | info->dyninfo.ld_hash = GET_WORD (abfd, linkinfo.ld_hash); |
| 218 | info->dyninfo.ld_stab = GET_WORD (abfd, linkinfo.ld_stab); |
| 219 | info->dyninfo.ld_stab_hash = GET_WORD (abfd, linkinfo.ld_stab_hash); |
| 220 | info->dyninfo.ld_buckets = GET_WORD (abfd, linkinfo.ld_buckets); |
| 221 | info->dyninfo.ld_symbols = GET_WORD (abfd, linkinfo.ld_symbols); |
| 222 | info->dyninfo.ld_symb_size = GET_WORD (abfd, linkinfo.ld_symb_size); |
| 223 | info->dyninfo.ld_text = GET_WORD (abfd, linkinfo.ld_text); |
| 224 | info->dyninfo.ld_plt_sz = GET_WORD (abfd, linkinfo.ld_plt_sz); |
| 225 | |
| 226 | /* Reportedly the addresses need to be offset by the size of the |
| 227 | exec header in an NMAGIC file. */ |
| 228 | if (adata (abfd).magic == n_magic) |
| 229 | { |
| 230 | unsigned long exec_bytes_size = adata (abfd).exec_bytes_size; |
| 231 | |
| 232 | info->dyninfo.ld_need += exec_bytes_size; |
| 233 | info->dyninfo.ld_rules += exec_bytes_size; |
| 234 | info->dyninfo.ld_rel += exec_bytes_size; |
| 235 | info->dyninfo.ld_hash += exec_bytes_size; |
| 236 | info->dyninfo.ld_stab += exec_bytes_size; |
| 237 | info->dyninfo.ld_symbols += exec_bytes_size; |
| 238 | } |
| 239 | |
| 240 | /* The only way to get the size of the symbol information appears to |
| 241 | be to determine the distance between it and the string table. */ |
| 242 | info->dynsym_count = ((info->dyninfo.ld_symbols - info->dyninfo.ld_stab) |
| 243 | / EXTERNAL_NLIST_SIZE); |
| 244 | BFD_ASSERT (info->dynsym_count * EXTERNAL_NLIST_SIZE |
| 245 | == (unsigned long) (info->dyninfo.ld_symbols |
| 246 | - info->dyninfo.ld_stab)); |
| 247 | |
| 248 | /* Similarly, the relocs end at the hash table. */ |
| 249 | info->dynrel_count = ((info->dyninfo.ld_hash - info->dyninfo.ld_rel) |
| 250 | / obj_reloc_entry_size (abfd)); |
| 251 | BFD_ASSERT (info->dynrel_count * obj_reloc_entry_size (abfd) |
| 252 | == (unsigned long) (info->dyninfo.ld_hash |
| 253 | - info->dyninfo.ld_rel)); |
| 254 | |
| 255 | info->valid = TRUE; |
| 256 | |
| 257 | return TRUE; |
| 258 | } |
| 259 | |
| 260 | /* Return the amount of memory required for the dynamic symbols. */ |
| 261 | |
| 262 | static long |
| 263 | sunos_get_dynamic_symtab_upper_bound (abfd) |
| 264 | bfd *abfd; |
| 265 | { |
| 266 | struct sunos_dynamic_info *info; |
| 267 | |
| 268 | if (! sunos_read_dynamic_info (abfd)) |
| 269 | return -1; |
| 270 | |
| 271 | info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| 272 | if (! info->valid) |
| 273 | { |
| 274 | bfd_set_error (bfd_error_no_symbols); |
| 275 | return -1; |
| 276 | } |
| 277 | |
| 278 | return (info->dynsym_count + 1) * sizeof (asymbol *); |
| 279 | } |
| 280 | |
| 281 | /* Read the external dynamic symbols. */ |
| 282 | |
| 283 | static bfd_boolean |
| 284 | sunos_slurp_dynamic_symtab (abfd) |
| 285 | bfd *abfd; |
| 286 | { |
| 287 | struct sunos_dynamic_info *info; |
| 288 | bfd_size_type amt; |
| 289 | |
| 290 | /* Get the general dynamic information. */ |
| 291 | if (obj_aout_dynamic_info (abfd) == NULL) |
| 292 | { |
| 293 | if (! sunos_read_dynamic_info (abfd)) |
| 294 | return FALSE; |
| 295 | } |
| 296 | |
| 297 | info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| 298 | if (! info->valid) |
| 299 | { |
| 300 | bfd_set_error (bfd_error_no_symbols); |
| 301 | return FALSE; |
| 302 | } |
| 303 | |
| 304 | /* Get the dynamic nlist structures. */ |
| 305 | if (info->dynsym == (struct external_nlist *) NULL) |
| 306 | { |
| 307 | amt = (bfd_size_type) info->dynsym_count * EXTERNAL_NLIST_SIZE; |
| 308 | info->dynsym = (struct external_nlist *) bfd_alloc (abfd, amt); |
| 309 | if (info->dynsym == NULL && info->dynsym_count != 0) |
| 310 | return FALSE; |
| 311 | if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_stab, SEEK_SET) != 0 |
| 312 | || bfd_bread ((PTR) info->dynsym, amt, abfd) != amt) |
| 313 | { |
| 314 | if (info->dynsym != NULL) |
| 315 | { |
| 316 | bfd_release (abfd, info->dynsym); |
| 317 | info->dynsym = NULL; |
| 318 | } |
| 319 | return FALSE; |
| 320 | } |
| 321 | } |
| 322 | |
| 323 | /* Get the dynamic strings. */ |
| 324 | if (info->dynstr == (char *) NULL) |
| 325 | { |
| 326 | amt = info->dyninfo.ld_symb_size; |
| 327 | info->dynstr = (char *) bfd_alloc (abfd, amt); |
| 328 | if (info->dynstr == NULL && info->dyninfo.ld_symb_size != 0) |
| 329 | return FALSE; |
| 330 | if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_symbols, SEEK_SET) != 0 |
| 331 | || bfd_bread ((PTR) info->dynstr, amt, abfd) != amt) |
| 332 | { |
| 333 | if (info->dynstr != NULL) |
| 334 | { |
| 335 | bfd_release (abfd, info->dynstr); |
| 336 | info->dynstr = NULL; |
| 337 | } |
| 338 | return FALSE; |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | return TRUE; |
| 343 | } |
| 344 | |
| 345 | /* Read in the dynamic symbols. */ |
| 346 | |
| 347 | static long |
| 348 | sunos_canonicalize_dynamic_symtab (abfd, storage) |
| 349 | bfd *abfd; |
| 350 | asymbol **storage; |
| 351 | { |
| 352 | struct sunos_dynamic_info *info; |
| 353 | unsigned long i; |
| 354 | |
| 355 | if (! sunos_slurp_dynamic_symtab (abfd)) |
| 356 | return -1; |
| 357 | |
| 358 | info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| 359 | |
| 360 | #ifdef CHECK_DYNAMIC_HASH |
| 361 | /* Check my understanding of the dynamic hash table by making sure |
| 362 | that each symbol can be located in the hash table. */ |
| 363 | { |
| 364 | bfd_size_type table_size; |
| 365 | bfd_byte *table; |
| 366 | bfd_size_type i; |
| 367 | |
| 368 | if (info->dyninfo.ld_buckets > info->dynsym_count) |
| 369 | abort (); |
| 370 | table_size = info->dyninfo.ld_stab - info->dyninfo.ld_hash; |
| 371 | table = (bfd_byte *) bfd_malloc (table_size); |
| 372 | if (table == NULL && table_size != 0) |
| 373 | abort (); |
| 374 | if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_hash, SEEK_SET) != 0 |
| 375 | || bfd_bread ((PTR) table, table_size, abfd) != table_size) |
| 376 | abort (); |
| 377 | for (i = 0; i < info->dynsym_count; i++) |
| 378 | { |
| 379 | unsigned char *name; |
| 380 | unsigned long hash; |
| 381 | |
| 382 | name = ((unsigned char *) info->dynstr |
| 383 | + GET_WORD (abfd, info->dynsym[i].e_strx)); |
| 384 | hash = 0; |
| 385 | while (*name != '\0') |
| 386 | hash = (hash << 1) + *name++; |
| 387 | hash &= 0x7fffffff; |
| 388 | hash %= info->dyninfo.ld_buckets; |
| 389 | while (GET_WORD (abfd, table + hash * HASH_ENTRY_SIZE) != i) |
| 390 | { |
| 391 | hash = GET_WORD (abfd, |
| 392 | table + hash * HASH_ENTRY_SIZE + BYTES_IN_WORD); |
| 393 | if (hash == 0 || hash >= table_size / HASH_ENTRY_SIZE) |
| 394 | abort (); |
| 395 | } |
| 396 | } |
| 397 | free (table); |
| 398 | } |
| 399 | #endif /* CHECK_DYNAMIC_HASH */ |
| 400 | |
| 401 | /* Get the asymbol structures corresponding to the dynamic nlist |
| 402 | structures. */ |
| 403 | if (info->canonical_dynsym == (aout_symbol_type *) NULL) |
| 404 | { |
| 405 | bfd_size_type size; |
| 406 | bfd_size_type strsize = info->dyninfo.ld_symb_size; |
| 407 | |
| 408 | size = (bfd_size_type) info->dynsym_count * sizeof (aout_symbol_type); |
| 409 | info->canonical_dynsym = (aout_symbol_type *) bfd_alloc (abfd, size); |
| 410 | if (info->canonical_dynsym == NULL && info->dynsym_count != 0) |
| 411 | return -1; |
| 412 | |
| 413 | if (! aout_32_translate_symbol_table (abfd, info->canonical_dynsym, |
| 414 | info->dynsym, |
| 415 | (bfd_size_type) info->dynsym_count, |
| 416 | info->dynstr, strsize, TRUE)) |
| 417 | { |
| 418 | if (info->canonical_dynsym != NULL) |
| 419 | { |
| 420 | bfd_release (abfd, info->canonical_dynsym); |
| 421 | info->canonical_dynsym = NULL; |
| 422 | } |
| 423 | return -1; |
| 424 | } |
| 425 | } |
| 426 | |
| 427 | /* Return pointers to the dynamic asymbol structures. */ |
| 428 | for (i = 0; i < info->dynsym_count; i++) |
| 429 | *storage++ = (asymbol *) (info->canonical_dynsym + i); |
| 430 | *storage = NULL; |
| 431 | |
| 432 | return info->dynsym_count; |
| 433 | } |
| 434 | |
| 435 | /* Return the amount of memory required for the dynamic relocs. */ |
| 436 | |
| 437 | static long |
| 438 | sunos_get_dynamic_reloc_upper_bound (abfd) |
| 439 | bfd *abfd; |
| 440 | { |
| 441 | struct sunos_dynamic_info *info; |
| 442 | |
| 443 | if (! sunos_read_dynamic_info (abfd)) |
| 444 | return -1; |
| 445 | |
| 446 | info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| 447 | if (! info->valid) |
| 448 | { |
| 449 | bfd_set_error (bfd_error_no_symbols); |
| 450 | return -1; |
| 451 | } |
| 452 | |
| 453 | return (info->dynrel_count + 1) * sizeof (arelent *); |
| 454 | } |
| 455 | |
| 456 | /* Read in the dynamic relocs. */ |
| 457 | |
| 458 | static long |
| 459 | sunos_canonicalize_dynamic_reloc (abfd, storage, syms) |
| 460 | bfd *abfd; |
| 461 | arelent **storage; |
| 462 | asymbol **syms; |
| 463 | { |
| 464 | struct sunos_dynamic_info *info; |
| 465 | unsigned long i; |
| 466 | bfd_size_type size; |
| 467 | |
| 468 | /* Get the general dynamic information. */ |
| 469 | if (obj_aout_dynamic_info (abfd) == (PTR) NULL) |
| 470 | { |
| 471 | if (! sunos_read_dynamic_info (abfd)) |
| 472 | return -1; |
| 473 | } |
| 474 | |
| 475 | info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| 476 | if (! info->valid) |
| 477 | { |
| 478 | bfd_set_error (bfd_error_no_symbols); |
| 479 | return -1; |
| 480 | } |
| 481 | |
| 482 | /* Get the dynamic reloc information. */ |
| 483 | if (info->dynrel == NULL) |
| 484 | { |
| 485 | size = (bfd_size_type) info->dynrel_count * obj_reloc_entry_size (abfd); |
| 486 | info->dynrel = (PTR) bfd_alloc (abfd, size); |
| 487 | if (info->dynrel == NULL && size != 0) |
| 488 | return -1; |
| 489 | if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_rel, SEEK_SET) != 0 |
| 490 | || bfd_bread ((PTR) info->dynrel, size, abfd) != size) |
| 491 | { |
| 492 | if (info->dynrel != NULL) |
| 493 | { |
| 494 | bfd_release (abfd, info->dynrel); |
| 495 | info->dynrel = NULL; |
| 496 | } |
| 497 | return -1; |
| 498 | } |
| 499 | } |
| 500 | |
| 501 | /* Get the arelent structures corresponding to the dynamic reloc |
| 502 | information. */ |
| 503 | if (info->canonical_dynrel == (arelent *) NULL) |
| 504 | { |
| 505 | arelent *to; |
| 506 | |
| 507 | size = (bfd_size_type) info->dynrel_count * sizeof (arelent); |
| 508 | info->canonical_dynrel = (arelent *) bfd_alloc (abfd, size); |
| 509 | if (info->canonical_dynrel == NULL && info->dynrel_count != 0) |
| 510 | return -1; |
| 511 | |
| 512 | to = info->canonical_dynrel; |
| 513 | |
| 514 | if (obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE) |
| 515 | { |
| 516 | register struct reloc_ext_external *p; |
| 517 | struct reloc_ext_external *pend; |
| 518 | |
| 519 | p = (struct reloc_ext_external *) info->dynrel; |
| 520 | pend = p + info->dynrel_count; |
| 521 | for (; p < pend; p++, to++) |
| 522 | NAME(aout,swap_ext_reloc_in) (abfd, p, to, syms, |
| 523 | (bfd_size_type) info->dynsym_count); |
| 524 | } |
| 525 | else |
| 526 | { |
| 527 | register struct reloc_std_external *p; |
| 528 | struct reloc_std_external *pend; |
| 529 | |
| 530 | p = (struct reloc_std_external *) info->dynrel; |
| 531 | pend = p + info->dynrel_count; |
| 532 | for (; p < pend; p++, to++) |
| 533 | NAME(aout,swap_std_reloc_in) (abfd, p, to, syms, |
| 534 | (bfd_size_type) info->dynsym_count); |
| 535 | } |
| 536 | } |
| 537 | |
| 538 | /* Return pointers to the dynamic arelent structures. */ |
| 539 | for (i = 0; i < info->dynrel_count; i++) |
| 540 | *storage++ = info->canonical_dynrel + i; |
| 541 | *storage = NULL; |
| 542 | |
| 543 | return info->dynrel_count; |
| 544 | } |
| 545 | \f |
| 546 | /* Code to handle linking of SunOS shared libraries. */ |
| 547 | |
| 548 | /* A SPARC procedure linkage table entry is 12 bytes. The first entry |
| 549 | in the table is a jump which is filled in by the runtime linker. |
| 550 | The remaining entries are branches back to the first entry, |
| 551 | followed by an index into the relocation table encoded to look like |
| 552 | a sethi of %g0. */ |
| 553 | |
| 554 | #define SPARC_PLT_ENTRY_SIZE (12) |
| 555 | |
| 556 | static const bfd_byte sparc_plt_first_entry[SPARC_PLT_ENTRY_SIZE] = |
| 557 | { |
| 558 | /* sethi %hi(0),%g1; address filled in by runtime linker. */ |
| 559 | 0x3, 0, 0, 0, |
| 560 | /* jmp %g1; offset filled in by runtime linker. */ |
| 561 | 0x81, 0xc0, 0x60, 0, |
| 562 | /* nop */ |
| 563 | 0x1, 0, 0, 0 |
| 564 | }; |
| 565 | |
| 566 | /* save %sp, -96, %sp */ |
| 567 | #define SPARC_PLT_ENTRY_WORD0 ((bfd_vma) 0x9de3bfa0) |
| 568 | /* call; address filled in later. */ |
| 569 | #define SPARC_PLT_ENTRY_WORD1 ((bfd_vma) 0x40000000) |
| 570 | /* sethi; reloc index filled in later. */ |
| 571 | #define SPARC_PLT_ENTRY_WORD2 ((bfd_vma) 0x01000000) |
| 572 | |
| 573 | /* This sequence is used when for the jump table entry to a defined |
| 574 | symbol in a complete executable. It is used when linking PIC |
| 575 | compiled code which is not being put into a shared library. */ |
| 576 | /* sethi <address to be filled in later>, %g1 */ |
| 577 | #define SPARC_PLT_PIC_WORD0 ((bfd_vma) 0x03000000) |
| 578 | /* jmp %g1 + <address to be filled in later> */ |
| 579 | #define SPARC_PLT_PIC_WORD1 ((bfd_vma) 0x81c06000) |
| 580 | /* nop */ |
| 581 | #define SPARC_PLT_PIC_WORD2 ((bfd_vma) 0x01000000) |
| 582 | |
| 583 | /* An m68k procedure linkage table entry is 8 bytes. The first entry |
| 584 | in the table is a jump which is filled in the by the runtime |
| 585 | linker. The remaining entries are branches back to the first |
| 586 | entry, followed by a two byte index into the relocation table. */ |
| 587 | |
| 588 | #define M68K_PLT_ENTRY_SIZE (8) |
| 589 | |
| 590 | static const bfd_byte m68k_plt_first_entry[M68K_PLT_ENTRY_SIZE] = |
| 591 | { |
| 592 | /* jmps @# */ |
| 593 | 0x4e, 0xf9, |
| 594 | /* Filled in by runtime linker with a magic address. */ |
| 595 | 0, 0, 0, 0, |
| 596 | /* Not used? */ |
| 597 | 0, 0 |
| 598 | }; |
| 599 | |
| 600 | /* bsrl */ |
| 601 | #define M68K_PLT_ENTRY_WORD0 ((bfd_vma) 0x61ff) |
| 602 | /* Remaining words filled in later. */ |
| 603 | |
| 604 | /* An entry in the SunOS linker hash table. */ |
| 605 | |
| 606 | struct sunos_link_hash_entry |
| 607 | { |
| 608 | struct aout_link_hash_entry root; |
| 609 | |
| 610 | /* If this is a dynamic symbol, this is its index into the dynamic |
| 611 | symbol table. This is initialized to -1. As the linker looks at |
| 612 | the input files, it changes this to -2 if it will be added to the |
| 613 | dynamic symbol table. After all the input files have been seen, |
| 614 | the linker will know whether to build a dynamic symbol table; if |
| 615 | it does build one, this becomes the index into the table. */ |
| 616 | long dynindx; |
| 617 | |
| 618 | /* If this is a dynamic symbol, this is the index of the name in the |
| 619 | dynamic symbol string table. */ |
| 620 | long dynstr_index; |
| 621 | |
| 622 | /* The offset into the global offset table used for this symbol. If |
| 623 | the symbol does not require a GOT entry, this is 0. */ |
| 624 | bfd_vma got_offset; |
| 625 | |
| 626 | /* The offset into the procedure linkage table used for this symbol. |
| 627 | If the symbol does not require a PLT entry, this is 0. */ |
| 628 | bfd_vma plt_offset; |
| 629 | |
| 630 | /* Some linker flags. */ |
| 631 | unsigned char flags; |
| 632 | /* Symbol is referenced by a regular object. */ |
| 633 | #define SUNOS_REF_REGULAR 01 |
| 634 | /* Symbol is defined by a regular object. */ |
| 635 | #define SUNOS_DEF_REGULAR 02 |
| 636 | /* Symbol is referenced by a dynamic object. */ |
| 637 | #define SUNOS_REF_DYNAMIC 04 |
| 638 | /* Symbol is defined by a dynamic object. */ |
| 639 | #define SUNOS_DEF_DYNAMIC 010 |
| 640 | /* Symbol is a constructor symbol in a regular object. */ |
| 641 | #define SUNOS_CONSTRUCTOR 020 |
| 642 | }; |
| 643 | |
| 644 | /* The SunOS linker hash table. */ |
| 645 | |
| 646 | struct sunos_link_hash_table |
| 647 | { |
| 648 | struct aout_link_hash_table root; |
| 649 | |
| 650 | /* The object which holds the dynamic sections. */ |
| 651 | bfd *dynobj; |
| 652 | |
| 653 | /* Whether we have created the dynamic sections. */ |
| 654 | bfd_boolean dynamic_sections_created; |
| 655 | |
| 656 | /* Whether we need the dynamic sections. */ |
| 657 | bfd_boolean dynamic_sections_needed; |
| 658 | |
| 659 | /* Whether we need the .got table. */ |
| 660 | bfd_boolean got_needed; |
| 661 | |
| 662 | /* The number of dynamic symbols. */ |
| 663 | size_t dynsymcount; |
| 664 | |
| 665 | /* The number of buckets in the hash table. */ |
| 666 | size_t bucketcount; |
| 667 | |
| 668 | /* The list of dynamic objects needed by dynamic objects included in |
| 669 | the link. */ |
| 670 | struct bfd_link_needed_list *needed; |
| 671 | |
| 672 | /* The offset of __GLOBAL_OFFSET_TABLE_ into the .got section. */ |
| 673 | bfd_vma got_base; |
| 674 | }; |
| 675 | |
| 676 | /* Routine to create an entry in an SunOS link hash table. */ |
| 677 | |
| 678 | static struct bfd_hash_entry * |
| 679 | sunos_link_hash_newfunc (entry, table, string) |
| 680 | struct bfd_hash_entry *entry; |
| 681 | struct bfd_hash_table *table; |
| 682 | const char *string; |
| 683 | { |
| 684 | struct sunos_link_hash_entry *ret = (struct sunos_link_hash_entry *) entry; |
| 685 | |
| 686 | /* Allocate the structure if it has not already been allocated by a |
| 687 | subclass. */ |
| 688 | if (ret == (struct sunos_link_hash_entry *) NULL) |
| 689 | ret = ((struct sunos_link_hash_entry *) |
| 690 | bfd_hash_allocate (table, sizeof (struct sunos_link_hash_entry))); |
| 691 | if (ret == (struct sunos_link_hash_entry *) NULL) |
| 692 | return (struct bfd_hash_entry *) ret; |
| 693 | |
| 694 | /* Call the allocation method of the superclass. */ |
| 695 | ret = ((struct sunos_link_hash_entry *) |
| 696 | NAME(aout,link_hash_newfunc) ((struct bfd_hash_entry *) ret, |
| 697 | table, string)); |
| 698 | if (ret != NULL) |
| 699 | { |
| 700 | /* Set local fields. */ |
| 701 | ret->dynindx = -1; |
| 702 | ret->dynstr_index = -1; |
| 703 | ret->got_offset = 0; |
| 704 | ret->plt_offset = 0; |
| 705 | ret->flags = 0; |
| 706 | } |
| 707 | |
| 708 | return (struct bfd_hash_entry *) ret; |
| 709 | } |
| 710 | |
| 711 | /* Create a SunOS link hash table. */ |
| 712 | |
| 713 | static struct bfd_link_hash_table * |
| 714 | sunos_link_hash_table_create (abfd) |
| 715 | bfd *abfd; |
| 716 | { |
| 717 | struct sunos_link_hash_table *ret; |
| 718 | bfd_size_type amt = sizeof (struct sunos_link_hash_table); |
| 719 | |
| 720 | ret = (struct sunos_link_hash_table *) bfd_malloc (amt); |
| 721 | if (ret == (struct sunos_link_hash_table *) NULL) |
| 722 | return (struct bfd_link_hash_table *) NULL; |
| 723 | if (! NAME(aout,link_hash_table_init) (&ret->root, abfd, |
| 724 | sunos_link_hash_newfunc)) |
| 725 | { |
| 726 | free (ret); |
| 727 | return (struct bfd_link_hash_table *) NULL; |
| 728 | } |
| 729 | |
| 730 | ret->dynobj = NULL; |
| 731 | ret->dynamic_sections_created = FALSE; |
| 732 | ret->dynamic_sections_needed = FALSE; |
| 733 | ret->got_needed = FALSE; |
| 734 | ret->dynsymcount = 0; |
| 735 | ret->bucketcount = 0; |
| 736 | ret->needed = NULL; |
| 737 | ret->got_base = 0; |
| 738 | |
| 739 | return &ret->root.root; |
| 740 | } |
| 741 | |
| 742 | /* Look up an entry in an SunOS link hash table. */ |
| 743 | |
| 744 | #define sunos_link_hash_lookup(table, string, create, copy, follow) \ |
| 745 | ((struct sunos_link_hash_entry *) \ |
| 746 | aout_link_hash_lookup (&(table)->root, (string), (create), (copy),\ |
| 747 | (follow))) |
| 748 | |
| 749 | /* Traverse a SunOS link hash table. */ |
| 750 | |
| 751 | #define sunos_link_hash_traverse(table, func, info) \ |
| 752 | (aout_link_hash_traverse \ |
| 753 | (&(table)->root, \ |
| 754 | (bfd_boolean (*) PARAMS ((struct aout_link_hash_entry *, PTR))) (func), \ |
| 755 | (info))) |
| 756 | |
| 757 | /* Get the SunOS link hash table from the info structure. This is |
| 758 | just a cast. */ |
| 759 | |
| 760 | #define sunos_hash_table(p) ((struct sunos_link_hash_table *) ((p)->hash)) |
| 761 | |
| 762 | static bfd_boolean sunos_scan_dynamic_symbol |
| 763 | PARAMS ((struct sunos_link_hash_entry *, PTR)); |
| 764 | |
| 765 | /* Create the dynamic sections needed if we are linking against a |
| 766 | dynamic object, or if we are linking PIC compiled code. ABFD is a |
| 767 | bfd we can attach the dynamic sections to. The linker script will |
| 768 | look for these special sections names and put them in the right |
| 769 | place in the output file. See include/aout/sun4.h for more details |
| 770 | of the dynamic linking information. */ |
| 771 | |
| 772 | static bfd_boolean |
| 773 | sunos_create_dynamic_sections (abfd, info, needed) |
| 774 | bfd *abfd; |
| 775 | struct bfd_link_info *info; |
| 776 | bfd_boolean needed; |
| 777 | { |
| 778 | asection *s; |
| 779 | |
| 780 | if (! sunos_hash_table (info)->dynamic_sections_created) |
| 781 | { |
| 782 | flagword flags; |
| 783 | |
| 784 | sunos_hash_table (info)->dynobj = abfd; |
| 785 | |
| 786 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 787 | | SEC_LINKER_CREATED); |
| 788 | |
| 789 | /* The .dynamic section holds the basic dynamic information: the |
| 790 | sun4_dynamic structure, the dynamic debugger information, and |
| 791 | the sun4_dynamic_link structure. */ |
| 792 | s = bfd_make_section (abfd, ".dynamic"); |
| 793 | if (s == NULL |
| 794 | || ! bfd_set_section_flags (abfd, s, flags) |
| 795 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 796 | return FALSE; |
| 797 | |
| 798 | /* The .got section holds the global offset table. The address |
| 799 | is put in the ld_got field. */ |
| 800 | s = bfd_make_section (abfd, ".got"); |
| 801 | if (s == NULL |
| 802 | || ! bfd_set_section_flags (abfd, s, flags) |
| 803 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 804 | return FALSE; |
| 805 | |
| 806 | /* The .plt section holds the procedure linkage table. The |
| 807 | address is put in the ld_plt field. */ |
| 808 | s = bfd_make_section (abfd, ".plt"); |
| 809 | if (s == NULL |
| 810 | || ! bfd_set_section_flags (abfd, s, flags | SEC_CODE) |
| 811 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 812 | return FALSE; |
| 813 | |
| 814 | /* The .dynrel section holds the dynamic relocs. The address is |
| 815 | put in the ld_rel field. */ |
| 816 | s = bfd_make_section (abfd, ".dynrel"); |
| 817 | if (s == NULL |
| 818 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| 819 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 820 | return FALSE; |
| 821 | |
| 822 | /* The .hash section holds the dynamic hash table. The address |
| 823 | is put in the ld_hash field. */ |
| 824 | s = bfd_make_section (abfd, ".hash"); |
| 825 | if (s == NULL |
| 826 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| 827 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 828 | return FALSE; |
| 829 | |
| 830 | /* The .dynsym section holds the dynamic symbols. The address |
| 831 | is put in the ld_stab field. */ |
| 832 | s = bfd_make_section (abfd, ".dynsym"); |
| 833 | if (s == NULL |
| 834 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| 835 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 836 | return FALSE; |
| 837 | |
| 838 | /* The .dynstr section holds the dynamic symbol string table. |
| 839 | The address is put in the ld_symbols field. */ |
| 840 | s = bfd_make_section (abfd, ".dynstr"); |
| 841 | if (s == NULL |
| 842 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| 843 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 844 | return FALSE; |
| 845 | |
| 846 | sunos_hash_table (info)->dynamic_sections_created = TRUE; |
| 847 | } |
| 848 | |
| 849 | if ((needed && ! sunos_hash_table (info)->dynamic_sections_needed) |
| 850 | || info->shared) |
| 851 | { |
| 852 | bfd *dynobj; |
| 853 | |
| 854 | dynobj = sunos_hash_table (info)->dynobj; |
| 855 | |
| 856 | s = bfd_get_section_by_name (dynobj, ".got"); |
| 857 | if (s->size == 0) |
| 858 | s->size = BYTES_IN_WORD; |
| 859 | |
| 860 | sunos_hash_table (info)->dynamic_sections_needed = TRUE; |
| 861 | sunos_hash_table (info)->got_needed = TRUE; |
| 862 | } |
| 863 | |
| 864 | return TRUE; |
| 865 | } |
| 866 | |
| 867 | /* Add dynamic symbols during a link. This is called by the a.out |
| 868 | backend linker for each object it encounters. */ |
| 869 | |
| 870 | static bfd_boolean |
| 871 | sunos_add_dynamic_symbols (abfd, info, symsp, sym_countp, stringsp) |
| 872 | bfd *abfd; |
| 873 | struct bfd_link_info *info; |
| 874 | struct external_nlist **symsp; |
| 875 | bfd_size_type *sym_countp; |
| 876 | char **stringsp; |
| 877 | { |
| 878 | bfd *dynobj; |
| 879 | struct sunos_dynamic_info *dinfo; |
| 880 | unsigned long need; |
| 881 | asection **ps; |
| 882 | |
| 883 | /* Make sure we have all the required sections. */ |
| 884 | if (info->hash->creator == abfd->xvec) |
| 885 | { |
| 886 | if (! sunos_create_dynamic_sections (abfd, info, |
| 887 | ((abfd->flags & DYNAMIC) != 0 |
| 888 | && !info->relocatable))) |
| 889 | return FALSE; |
| 890 | } |
| 891 | |
| 892 | /* There is nothing else to do for a normal object. */ |
| 893 | if ((abfd->flags & DYNAMIC) == 0) |
| 894 | return TRUE; |
| 895 | |
| 896 | dynobj = sunos_hash_table (info)->dynobj; |
| 897 | |
| 898 | /* We do not want to include the sections in a dynamic object in the |
| 899 | output file. We hack by simply clobbering the list of sections |
| 900 | in the BFD. This could be handled more cleanly by, say, a new |
| 901 | section flag; the existing SEC_NEVER_LOAD flag is not the one we |
| 902 | want, because that one still implies that the section takes up |
| 903 | space in the output file. If this is the first object we have |
| 904 | seen, we must preserve the dynamic sections we just created. */ |
| 905 | for (ps = &abfd->sections; *ps != NULL; ) |
| 906 | { |
| 907 | if (abfd != dynobj || ((*ps)->flags & SEC_LINKER_CREATED) == 0) |
| 908 | bfd_section_list_remove (abfd, ps); |
| 909 | else |
| 910 | ps = &(*ps)->next; |
| 911 | } |
| 912 | |
| 913 | /* The native linker seems to just ignore dynamic objects when -r is |
| 914 | used. */ |
| 915 | if (info->relocatable) |
| 916 | return TRUE; |
| 917 | |
| 918 | /* There's no hope of using a dynamic object which does not exactly |
| 919 | match the format of the output file. */ |
| 920 | if (info->hash->creator != abfd->xvec) |
| 921 | { |
| 922 | bfd_set_error (bfd_error_invalid_operation); |
| 923 | return FALSE; |
| 924 | } |
| 925 | |
| 926 | /* Make sure we have a .need and a .rules sections. These are only |
| 927 | needed if there really is a dynamic object in the link, so they |
| 928 | are not added by sunos_create_dynamic_sections. */ |
| 929 | if (bfd_get_section_by_name (dynobj, ".need") == NULL) |
| 930 | { |
| 931 | /* The .need section holds the list of names of shared objets |
| 932 | which must be included at runtime. The address of this |
| 933 | section is put in the ld_need field. */ |
| 934 | asection *s = bfd_make_section (dynobj, ".need"); |
| 935 | if (s == NULL |
| 936 | || ! bfd_set_section_flags (dynobj, s, |
| 937 | (SEC_ALLOC |
| 938 | | SEC_LOAD |
| 939 | | SEC_HAS_CONTENTS |
| 940 | | SEC_IN_MEMORY |
| 941 | | SEC_READONLY)) |
| 942 | || ! bfd_set_section_alignment (dynobj, s, 2)) |
| 943 | return FALSE; |
| 944 | } |
| 945 | |
| 946 | if (bfd_get_section_by_name (dynobj, ".rules") == NULL) |
| 947 | { |
| 948 | /* The .rules section holds the path to search for shared |
| 949 | objects. The address of this section is put in the ld_rules |
| 950 | field. */ |
| 951 | asection *s = bfd_make_section (dynobj, ".rules"); |
| 952 | if (s == NULL |
| 953 | || ! bfd_set_section_flags (dynobj, s, |
| 954 | (SEC_ALLOC |
| 955 | | SEC_LOAD |
| 956 | | SEC_HAS_CONTENTS |
| 957 | | SEC_IN_MEMORY |
| 958 | | SEC_READONLY)) |
| 959 | || ! bfd_set_section_alignment (dynobj, s, 2)) |
| 960 | return FALSE; |
| 961 | } |
| 962 | |
| 963 | /* Pick up the dynamic symbols and return them to the caller. */ |
| 964 | if (! sunos_slurp_dynamic_symtab (abfd)) |
| 965 | return FALSE; |
| 966 | |
| 967 | dinfo = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); |
| 968 | *symsp = dinfo->dynsym; |
| 969 | *sym_countp = dinfo->dynsym_count; |
| 970 | *stringsp = dinfo->dynstr; |
| 971 | |
| 972 | /* Record information about any other objects needed by this one. */ |
| 973 | need = dinfo->dyninfo.ld_need; |
| 974 | while (need != 0) |
| 975 | { |
| 976 | bfd_byte buf[16]; |
| 977 | unsigned long name, flags; |
| 978 | unsigned short major_vno, minor_vno; |
| 979 | struct bfd_link_needed_list *needed, **pp; |
| 980 | char *namebuf, *p; |
| 981 | bfd_size_type alc; |
| 982 | bfd_byte b; |
| 983 | char *namecopy; |
| 984 | |
| 985 | if (bfd_seek (abfd, (file_ptr) need, SEEK_SET) != 0 |
| 986 | || bfd_bread (buf, (bfd_size_type) 16, abfd) != 16) |
| 987 | return FALSE; |
| 988 | |
| 989 | /* For the format of an ld_need entry, see aout/sun4.h. We |
| 990 | should probably define structs for this manipulation. */ |
| 991 | |
| 992 | name = bfd_get_32 (abfd, buf); |
| 993 | flags = bfd_get_32 (abfd, buf + 4); |
| 994 | major_vno = (unsigned short) bfd_get_16 (abfd, buf + 8); |
| 995 | minor_vno = (unsigned short) bfd_get_16 (abfd, buf + 10); |
| 996 | need = bfd_get_32 (abfd, buf + 12); |
| 997 | |
| 998 | alc = sizeof (struct bfd_link_needed_list); |
| 999 | needed = (struct bfd_link_needed_list *) bfd_alloc (abfd, alc); |
| 1000 | if (needed == NULL) |
| 1001 | return FALSE; |
| 1002 | needed->by = abfd; |
| 1003 | |
| 1004 | /* We return the name as [-l]name[.maj][.min]. */ |
| 1005 | alc = 30; |
| 1006 | namebuf = (char *) bfd_malloc (alc + 1); |
| 1007 | if (namebuf == NULL) |
| 1008 | return FALSE; |
| 1009 | p = namebuf; |
| 1010 | |
| 1011 | if ((flags & 0x80000000) != 0) |
| 1012 | { |
| 1013 | *p++ = '-'; |
| 1014 | *p++ = 'l'; |
| 1015 | } |
| 1016 | if (bfd_seek (abfd, (file_ptr) name, SEEK_SET) != 0) |
| 1017 | { |
| 1018 | free (namebuf); |
| 1019 | return FALSE; |
| 1020 | } |
| 1021 | |
| 1022 | do |
| 1023 | { |
| 1024 | if (bfd_bread (&b, (bfd_size_type) 1, abfd) != 1) |
| 1025 | { |
| 1026 | free (namebuf); |
| 1027 | return FALSE; |
| 1028 | } |
| 1029 | |
| 1030 | if ((bfd_size_type) (p - namebuf) >= alc) |
| 1031 | { |
| 1032 | char *n; |
| 1033 | |
| 1034 | alc *= 2; |
| 1035 | n = (char *) bfd_realloc (namebuf, alc + 1); |
| 1036 | if (n == NULL) |
| 1037 | { |
| 1038 | free (namebuf); |
| 1039 | return FALSE; |
| 1040 | } |
| 1041 | p = n + (p - namebuf); |
| 1042 | namebuf = n; |
| 1043 | } |
| 1044 | |
| 1045 | *p++ = b; |
| 1046 | } |
| 1047 | while (b != '\0'); |
| 1048 | |
| 1049 | if (major_vno == 0) |
| 1050 | *p = '\0'; |
| 1051 | else |
| 1052 | { |
| 1053 | char majbuf[30]; |
| 1054 | char minbuf[30]; |
| 1055 | |
| 1056 | sprintf (majbuf, ".%d", major_vno); |
| 1057 | if (minor_vno == 0) |
| 1058 | minbuf[0] = '\0'; |
| 1059 | else |
| 1060 | sprintf (minbuf, ".%d", minor_vno); |
| 1061 | |
| 1062 | if ((p - namebuf) + strlen (majbuf) + strlen (minbuf) >= alc) |
| 1063 | { |
| 1064 | char *n; |
| 1065 | |
| 1066 | alc = (p - namebuf) + strlen (majbuf) + strlen (minbuf); |
| 1067 | n = (char *) bfd_realloc (namebuf, alc + 1); |
| 1068 | if (n == NULL) |
| 1069 | { |
| 1070 | free (namebuf); |
| 1071 | return FALSE; |
| 1072 | } |
| 1073 | p = n + (p - namebuf); |
| 1074 | namebuf = n; |
| 1075 | } |
| 1076 | |
| 1077 | strcpy (p, majbuf); |
| 1078 | strcat (p, minbuf); |
| 1079 | } |
| 1080 | |
| 1081 | namecopy = bfd_alloc (abfd, (bfd_size_type) strlen (namebuf) + 1); |
| 1082 | if (namecopy == NULL) |
| 1083 | { |
| 1084 | free (namebuf); |
| 1085 | return FALSE; |
| 1086 | } |
| 1087 | strcpy (namecopy, namebuf); |
| 1088 | free (namebuf); |
| 1089 | needed->name = namecopy; |
| 1090 | |
| 1091 | needed->next = NULL; |
| 1092 | |
| 1093 | for (pp = &sunos_hash_table (info)->needed; |
| 1094 | *pp != NULL; |
| 1095 | pp = &(*pp)->next) |
| 1096 | ; |
| 1097 | *pp = needed; |
| 1098 | } |
| 1099 | |
| 1100 | return TRUE; |
| 1101 | } |
| 1102 | |
| 1103 | /* Function to add a single symbol to the linker hash table. This is |
| 1104 | a wrapper around _bfd_generic_link_add_one_symbol which handles the |
| 1105 | tweaking needed for dynamic linking support. */ |
| 1106 | |
| 1107 | static bfd_boolean |
| 1108 | sunos_add_one_symbol (info, abfd, name, flags, section, value, string, |
| 1109 | copy, collect, hashp) |
| 1110 | struct bfd_link_info *info; |
| 1111 | bfd *abfd; |
| 1112 | const char *name; |
| 1113 | flagword flags; |
| 1114 | asection *section; |
| 1115 | bfd_vma value; |
| 1116 | const char *string; |
| 1117 | bfd_boolean copy; |
| 1118 | bfd_boolean collect; |
| 1119 | struct bfd_link_hash_entry **hashp; |
| 1120 | { |
| 1121 | struct sunos_link_hash_entry *h; |
| 1122 | int new_flag; |
| 1123 | |
| 1124 | if ((flags & (BSF_INDIRECT | BSF_WARNING | BSF_CONSTRUCTOR)) != 0 |
| 1125 | || ! bfd_is_und_section (section)) |
| 1126 | h = sunos_link_hash_lookup (sunos_hash_table (info), name, TRUE, copy, |
| 1127 | FALSE); |
| 1128 | else |
| 1129 | h = ((struct sunos_link_hash_entry *) |
| 1130 | bfd_wrapped_link_hash_lookup (abfd, info, name, TRUE, copy, FALSE)); |
| 1131 | if (h == NULL) |
| 1132 | return FALSE; |
| 1133 | |
| 1134 | if (hashp != NULL) |
| 1135 | *hashp = (struct bfd_link_hash_entry *) h; |
| 1136 | |
| 1137 | /* Treat a common symbol in a dynamic object as defined in the .bss |
| 1138 | section of the dynamic object. We don't want to allocate space |
| 1139 | for it in our process image. */ |
| 1140 | if ((abfd->flags & DYNAMIC) != 0 |
| 1141 | && bfd_is_com_section (section)) |
| 1142 | section = obj_bsssec (abfd); |
| 1143 | |
| 1144 | if (! bfd_is_und_section (section) |
| 1145 | && h->root.root.type != bfd_link_hash_new |
| 1146 | && h->root.root.type != bfd_link_hash_undefined |
| 1147 | && h->root.root.type != bfd_link_hash_defweak) |
| 1148 | { |
| 1149 | /* We are defining the symbol, and it is already defined. This |
| 1150 | is a potential multiple definition error. */ |
| 1151 | if ((abfd->flags & DYNAMIC) != 0) |
| 1152 | { |
| 1153 | /* The definition we are adding is from a dynamic object. |
| 1154 | We do not want this new definition to override the |
| 1155 | existing definition, so we pretend it is just a |
| 1156 | reference. */ |
| 1157 | section = bfd_und_section_ptr; |
| 1158 | } |
| 1159 | else if (h->root.root.type == bfd_link_hash_defined |
| 1160 | && h->root.root.u.def.section->owner != NULL |
| 1161 | && (h->root.root.u.def.section->owner->flags & DYNAMIC) != 0) |
| 1162 | { |
| 1163 | /* The existing definition is from a dynamic object. We |
| 1164 | want to override it with the definition we just found. |
| 1165 | Clobber the existing definition. */ |
| 1166 | h->root.root.type = bfd_link_hash_undefined; |
| 1167 | h->root.root.u.undef.abfd = h->root.root.u.def.section->owner; |
| 1168 | } |
| 1169 | else if (h->root.root.type == bfd_link_hash_common |
| 1170 | && (h->root.root.u.c.p->section->owner->flags & DYNAMIC) != 0) |
| 1171 | { |
| 1172 | /* The existing definition is from a dynamic object. We |
| 1173 | want to override it with the definition we just found. |
| 1174 | Clobber the existing definition. We can't set it to new, |
| 1175 | because it is on the undefined list. */ |
| 1176 | h->root.root.type = bfd_link_hash_undefined; |
| 1177 | h->root.root.u.undef.abfd = h->root.root.u.c.p->section->owner; |
| 1178 | } |
| 1179 | } |
| 1180 | |
| 1181 | if ((abfd->flags & DYNAMIC) != 0 |
| 1182 | && abfd->xvec == info->hash->creator |
| 1183 | && (h->flags & SUNOS_CONSTRUCTOR) != 0) |
| 1184 | { |
| 1185 | /* The existing symbol is a constructor symbol, and this symbol |
| 1186 | is from a dynamic object. A constructor symbol is actually a |
| 1187 | definition, although the type will be bfd_link_hash_undefined |
| 1188 | at this point. We want to ignore the definition from the |
| 1189 | dynamic object. */ |
| 1190 | section = bfd_und_section_ptr; |
| 1191 | } |
| 1192 | else if ((flags & BSF_CONSTRUCTOR) != 0 |
| 1193 | && (abfd->flags & DYNAMIC) == 0 |
| 1194 | && h->root.root.type == bfd_link_hash_defined |
| 1195 | && h->root.root.u.def.section->owner != NULL |
| 1196 | && (h->root.root.u.def.section->owner->flags & DYNAMIC) != 0) |
| 1197 | { |
| 1198 | /* The existing symbol is defined by a dynamic object, and this |
| 1199 | is a constructor symbol. As above, we want to force the use |
| 1200 | of the constructor symbol from the regular object. */ |
| 1201 | h->root.root.type = bfd_link_hash_new; |
| 1202 | } |
| 1203 | |
| 1204 | /* Do the usual procedure for adding a symbol. */ |
| 1205 | if (! _bfd_generic_link_add_one_symbol (info, abfd, name, flags, section, |
| 1206 | value, string, copy, collect, |
| 1207 | hashp)) |
| 1208 | return FALSE; |
| 1209 | |
| 1210 | if (abfd->xvec == info->hash->creator) |
| 1211 | { |
| 1212 | /* Set a flag in the hash table entry indicating the type of |
| 1213 | reference or definition we just found. Keep a count of the |
| 1214 | number of dynamic symbols we find. A dynamic symbol is one |
| 1215 | which is referenced or defined by both a regular object and a |
| 1216 | shared object. */ |
| 1217 | if ((abfd->flags & DYNAMIC) == 0) |
| 1218 | { |
| 1219 | if (bfd_is_und_section (section)) |
| 1220 | new_flag = SUNOS_REF_REGULAR; |
| 1221 | else |
| 1222 | new_flag = SUNOS_DEF_REGULAR; |
| 1223 | } |
| 1224 | else |
| 1225 | { |
| 1226 | if (bfd_is_und_section (section)) |
| 1227 | new_flag = SUNOS_REF_DYNAMIC; |
| 1228 | else |
| 1229 | new_flag = SUNOS_DEF_DYNAMIC; |
| 1230 | } |
| 1231 | h->flags |= new_flag; |
| 1232 | |
| 1233 | if (h->dynindx == -1 |
| 1234 | && (h->flags & (SUNOS_DEF_REGULAR | SUNOS_REF_REGULAR)) != 0) |
| 1235 | { |
| 1236 | ++sunos_hash_table (info)->dynsymcount; |
| 1237 | h->dynindx = -2; |
| 1238 | } |
| 1239 | |
| 1240 | if ((flags & BSF_CONSTRUCTOR) != 0 |
| 1241 | && (abfd->flags & DYNAMIC) == 0) |
| 1242 | h->flags |= SUNOS_CONSTRUCTOR; |
| 1243 | } |
| 1244 | |
| 1245 | return TRUE; |
| 1246 | } |
| 1247 | |
| 1248 | /* Return the list of objects needed by BFD. */ |
| 1249 | |
| 1250 | struct bfd_link_needed_list * |
| 1251 | bfd_sunos_get_needed_list (abfd, info) |
| 1252 | bfd *abfd ATTRIBUTE_UNUSED; |
| 1253 | struct bfd_link_info *info; |
| 1254 | { |
| 1255 | if (info->hash->creator != &MY(vec)) |
| 1256 | return NULL; |
| 1257 | return sunos_hash_table (info)->needed; |
| 1258 | } |
| 1259 | |
| 1260 | /* Record an assignment made to a symbol by a linker script. We need |
| 1261 | this in case some dynamic object refers to this symbol. */ |
| 1262 | |
| 1263 | bfd_boolean |
| 1264 | bfd_sunos_record_link_assignment (output_bfd, info, name) |
| 1265 | bfd *output_bfd; |
| 1266 | struct bfd_link_info *info; |
| 1267 | const char *name; |
| 1268 | { |
| 1269 | struct sunos_link_hash_entry *h; |
| 1270 | |
| 1271 | if (output_bfd->xvec != &MY(vec)) |
| 1272 | return TRUE; |
| 1273 | |
| 1274 | /* This is called after we have examined all the input objects. If |
| 1275 | the symbol does not exist, it merely means that no object refers |
| 1276 | to it, and we can just ignore it at this point. */ |
| 1277 | h = sunos_link_hash_lookup (sunos_hash_table (info), name, |
| 1278 | FALSE, FALSE, FALSE); |
| 1279 | if (h == NULL) |
| 1280 | return TRUE; |
| 1281 | |
| 1282 | /* In a shared library, the __DYNAMIC symbol does not appear in the |
| 1283 | dynamic symbol table. */ |
| 1284 | if (! info->shared || strcmp (name, "__DYNAMIC") != 0) |
| 1285 | { |
| 1286 | h->flags |= SUNOS_DEF_REGULAR; |
| 1287 | |
| 1288 | if (h->dynindx == -1) |
| 1289 | { |
| 1290 | ++sunos_hash_table (info)->dynsymcount; |
| 1291 | h->dynindx = -2; |
| 1292 | } |
| 1293 | } |
| 1294 | |
| 1295 | return TRUE; |
| 1296 | } |
| 1297 | |
| 1298 | /* Set up the sizes and contents of the dynamic sections created in |
| 1299 | sunos_add_dynamic_symbols. This is called by the SunOS linker |
| 1300 | emulation before_allocation routine. We must set the sizes of the |
| 1301 | sections before the linker sets the addresses of the various |
| 1302 | sections. This unfortunately requires reading all the relocs so |
| 1303 | that we can work out which ones need to become dynamic relocs. If |
| 1304 | info->keep_memory is TRUE, we keep the relocs in memory; otherwise, |
| 1305 | we discard them, and will read them again later. */ |
| 1306 | |
| 1307 | bfd_boolean |
| 1308 | bfd_sunos_size_dynamic_sections (output_bfd, info, sdynptr, sneedptr, |
| 1309 | srulesptr) |
| 1310 | bfd *output_bfd; |
| 1311 | struct bfd_link_info *info; |
| 1312 | asection **sdynptr; |
| 1313 | asection **sneedptr; |
| 1314 | asection **srulesptr; |
| 1315 | { |
| 1316 | bfd *dynobj; |
| 1317 | bfd_size_type dynsymcount; |
| 1318 | struct sunos_link_hash_entry *h; |
| 1319 | asection *s; |
| 1320 | size_t bucketcount; |
| 1321 | bfd_size_type hashalloc; |
| 1322 | size_t i; |
| 1323 | bfd *sub; |
| 1324 | |
| 1325 | *sdynptr = NULL; |
| 1326 | *sneedptr = NULL; |
| 1327 | *srulesptr = NULL; |
| 1328 | |
| 1329 | if (info->relocatable) |
| 1330 | return TRUE; |
| 1331 | |
| 1332 | if (output_bfd->xvec != &MY(vec)) |
| 1333 | return TRUE; |
| 1334 | |
| 1335 | /* Look through all the input BFD's and read their relocs. It would |
| 1336 | be better if we didn't have to do this, but there is no other way |
| 1337 | to determine the number of dynamic relocs we need, and, more |
| 1338 | importantly, there is no other way to know which symbols should |
| 1339 | get an entry in the procedure linkage table. */ |
| 1340 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) |
| 1341 | { |
| 1342 | if ((sub->flags & DYNAMIC) == 0 |
| 1343 | && sub->xvec == output_bfd->xvec) |
| 1344 | { |
| 1345 | if (! sunos_scan_relocs (info, sub, obj_textsec (sub), |
| 1346 | exec_hdr (sub)->a_trsize) |
| 1347 | || ! sunos_scan_relocs (info, sub, obj_datasec (sub), |
| 1348 | exec_hdr (sub)->a_drsize)) |
| 1349 | return FALSE; |
| 1350 | } |
| 1351 | } |
| 1352 | |
| 1353 | dynobj = sunos_hash_table (info)->dynobj; |
| 1354 | dynsymcount = sunos_hash_table (info)->dynsymcount; |
| 1355 | |
| 1356 | /* If there were no dynamic objects in the link, and we don't need |
| 1357 | to build a global offset table, there is nothing to do here. */ |
| 1358 | if (! sunos_hash_table (info)->dynamic_sections_needed |
| 1359 | && ! sunos_hash_table (info)->got_needed) |
| 1360 | return TRUE; |
| 1361 | |
| 1362 | /* If __GLOBAL_OFFSET_TABLE_ was mentioned, define it. */ |
| 1363 | h = sunos_link_hash_lookup (sunos_hash_table (info), |
| 1364 | "__GLOBAL_OFFSET_TABLE_", FALSE, FALSE, FALSE); |
| 1365 | if (h != NULL && (h->flags & SUNOS_REF_REGULAR) != 0) |
| 1366 | { |
| 1367 | h->flags |= SUNOS_DEF_REGULAR; |
| 1368 | if (h->dynindx == -1) |
| 1369 | { |
| 1370 | ++sunos_hash_table (info)->dynsymcount; |
| 1371 | h->dynindx = -2; |
| 1372 | } |
| 1373 | h->root.root.type = bfd_link_hash_defined; |
| 1374 | h->root.root.u.def.section = bfd_get_section_by_name (dynobj, ".got"); |
| 1375 | |
| 1376 | /* If the .got section is more than 0x1000 bytes, we set |
| 1377 | __GLOBAL_OFFSET_TABLE_ to be 0x1000 bytes into the section, |
| 1378 | so that 13 bit relocations have a greater chance of working. */ |
| 1379 | s = bfd_get_section_by_name (dynobj, ".got"); |
| 1380 | BFD_ASSERT (s != NULL); |
| 1381 | if (s->size >= 0x1000) |
| 1382 | h->root.root.u.def.value = 0x1000; |
| 1383 | else |
| 1384 | h->root.root.u.def.value = 0; |
| 1385 | |
| 1386 | sunos_hash_table (info)->got_base = h->root.root.u.def.value; |
| 1387 | } |
| 1388 | |
| 1389 | /* If there are any shared objects in the link, then we need to set |
| 1390 | up the dynamic linking information. */ |
| 1391 | if (sunos_hash_table (info)->dynamic_sections_needed) |
| 1392 | { |
| 1393 | *sdynptr = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 1394 | |
| 1395 | /* The .dynamic section is always the same size. */ |
| 1396 | s = *sdynptr; |
| 1397 | BFD_ASSERT (s != NULL); |
| 1398 | s->size = (sizeof (struct external_sun4_dynamic) |
| 1399 | + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE |
| 1400 | + sizeof (struct external_sun4_dynamic_link)); |
| 1401 | |
| 1402 | /* Set the size of the .dynsym and .hash sections. We counted |
| 1403 | the number of dynamic symbols as we read the input files. We |
| 1404 | will build the dynamic symbol table (.dynsym) and the hash |
| 1405 | table (.hash) when we build the final symbol table, because |
| 1406 | until then we do not know the correct value to give the |
| 1407 | symbols. We build the dynamic symbol string table (.dynstr) |
| 1408 | in a traversal of the symbol table using |
| 1409 | sunos_scan_dynamic_symbol. */ |
| 1410 | s = bfd_get_section_by_name (dynobj, ".dynsym"); |
| 1411 | BFD_ASSERT (s != NULL); |
| 1412 | s->size = dynsymcount * sizeof (struct external_nlist); |
| 1413 | s->contents = (bfd_byte *) bfd_alloc (output_bfd, s->size); |
| 1414 | if (s->contents == NULL && s->size != 0) |
| 1415 | return FALSE; |
| 1416 | |
| 1417 | /* The number of buckets is just the number of symbols divided |
| 1418 | by four. To compute the final size of the hash table, we |
| 1419 | must actually compute the hash table. Normally we need |
| 1420 | exactly as many entries in the hash table as there are |
| 1421 | dynamic symbols, but if some of the buckets are not used we |
| 1422 | will need additional entries. In the worst case, every |
| 1423 | symbol will hash to the same bucket, and we will need |
| 1424 | BUCKETCOUNT - 1 extra entries. */ |
| 1425 | if (dynsymcount >= 4) |
| 1426 | bucketcount = dynsymcount / 4; |
| 1427 | else if (dynsymcount > 0) |
| 1428 | bucketcount = dynsymcount; |
| 1429 | else |
| 1430 | bucketcount = 1; |
| 1431 | s = bfd_get_section_by_name (dynobj, ".hash"); |
| 1432 | BFD_ASSERT (s != NULL); |
| 1433 | hashalloc = (dynsymcount + bucketcount - 1) * HASH_ENTRY_SIZE; |
| 1434 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, hashalloc); |
| 1435 | if (s->contents == NULL && dynsymcount > 0) |
| 1436 | return FALSE; |
| 1437 | for (i = 0; i < bucketcount; i++) |
| 1438 | PUT_WORD (output_bfd, (bfd_vma) -1, s->contents + i * HASH_ENTRY_SIZE); |
| 1439 | s->size = bucketcount * HASH_ENTRY_SIZE; |
| 1440 | |
| 1441 | sunos_hash_table (info)->bucketcount = bucketcount; |
| 1442 | |
| 1443 | /* Scan all the symbols, place them in the dynamic symbol table, |
| 1444 | and build the dynamic hash table. We reuse dynsymcount as a |
| 1445 | counter for the number of symbols we have added so far. */ |
| 1446 | sunos_hash_table (info)->dynsymcount = 0; |
| 1447 | sunos_link_hash_traverse (sunos_hash_table (info), |
| 1448 | sunos_scan_dynamic_symbol, |
| 1449 | (PTR) info); |
| 1450 | BFD_ASSERT (sunos_hash_table (info)->dynsymcount == dynsymcount); |
| 1451 | |
| 1452 | /* The SunOS native linker seems to align the total size of the |
| 1453 | symbol strings to a multiple of 8. I don't know if this is |
| 1454 | important, but it can't hurt much. */ |
| 1455 | s = bfd_get_section_by_name (dynobj, ".dynstr"); |
| 1456 | BFD_ASSERT (s != NULL); |
| 1457 | if ((s->size & 7) != 0) |
| 1458 | { |
| 1459 | bfd_size_type add; |
| 1460 | bfd_byte *contents; |
| 1461 | |
| 1462 | add = 8 - (s->size & 7); |
| 1463 | contents = (bfd_byte *) bfd_realloc (s->contents, |
| 1464 | s->size + add); |
| 1465 | if (contents == NULL) |
| 1466 | return FALSE; |
| 1467 | memset (contents + s->size, 0, (size_t) add); |
| 1468 | s->contents = contents; |
| 1469 | s->size += add; |
| 1470 | } |
| 1471 | } |
| 1472 | |
| 1473 | /* Now that we have worked out the sizes of the procedure linkage |
| 1474 | table and the dynamic relocs, allocate storage for them. */ |
| 1475 | s = bfd_get_section_by_name (dynobj, ".plt"); |
| 1476 | BFD_ASSERT (s != NULL); |
| 1477 | if (s->size != 0) |
| 1478 | { |
| 1479 | s->contents = (bfd_byte *) bfd_alloc (dynobj, s->size); |
| 1480 | if (s->contents == NULL) |
| 1481 | return FALSE; |
| 1482 | |
| 1483 | /* Fill in the first entry in the table. */ |
| 1484 | switch (bfd_get_arch (dynobj)) |
| 1485 | { |
| 1486 | case bfd_arch_sparc: |
| 1487 | memcpy (s->contents, sparc_plt_first_entry, SPARC_PLT_ENTRY_SIZE); |
| 1488 | break; |
| 1489 | |
| 1490 | case bfd_arch_m68k: |
| 1491 | memcpy (s->contents, m68k_plt_first_entry, M68K_PLT_ENTRY_SIZE); |
| 1492 | break; |
| 1493 | |
| 1494 | default: |
| 1495 | abort (); |
| 1496 | } |
| 1497 | } |
| 1498 | |
| 1499 | s = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 1500 | if (s->size != 0) |
| 1501 | { |
| 1502 | s->contents = (bfd_byte *) bfd_alloc (dynobj, s->size); |
| 1503 | if (s->contents == NULL) |
| 1504 | return FALSE; |
| 1505 | } |
| 1506 | /* We use the reloc_count field to keep track of how many of the |
| 1507 | relocs we have output so far. */ |
| 1508 | s->reloc_count = 0; |
| 1509 | |
| 1510 | /* Make space for the global offset table. */ |
| 1511 | s = bfd_get_section_by_name (dynobj, ".got"); |
| 1512 | s->contents = (bfd_byte *) bfd_alloc (dynobj, s->size); |
| 1513 | if (s->contents == NULL) |
| 1514 | return FALSE; |
| 1515 | |
| 1516 | *sneedptr = bfd_get_section_by_name (dynobj, ".need"); |
| 1517 | *srulesptr = bfd_get_section_by_name (dynobj, ".rules"); |
| 1518 | |
| 1519 | return TRUE; |
| 1520 | } |
| 1521 | |
| 1522 | /* Scan the relocs for an input section. */ |
| 1523 | |
| 1524 | static bfd_boolean |
| 1525 | sunos_scan_relocs (info, abfd, sec, rel_size) |
| 1526 | struct bfd_link_info *info; |
| 1527 | bfd *abfd; |
| 1528 | asection *sec; |
| 1529 | bfd_size_type rel_size; |
| 1530 | { |
| 1531 | PTR relocs; |
| 1532 | PTR free_relocs = NULL; |
| 1533 | |
| 1534 | if (rel_size == 0) |
| 1535 | return TRUE; |
| 1536 | |
| 1537 | if (! info->keep_memory) |
| 1538 | relocs = free_relocs = bfd_malloc (rel_size); |
| 1539 | else |
| 1540 | { |
| 1541 | struct aout_section_data_struct *n; |
| 1542 | bfd_size_type amt = sizeof (struct aout_section_data_struct); |
| 1543 | |
| 1544 | n = (struct aout_section_data_struct *) bfd_alloc (abfd, amt); |
| 1545 | if (n == NULL) |
| 1546 | relocs = NULL; |
| 1547 | else |
| 1548 | { |
| 1549 | set_aout_section_data (sec, n); |
| 1550 | relocs = bfd_malloc (rel_size); |
| 1551 | aout_section_data (sec)->relocs = relocs; |
| 1552 | } |
| 1553 | } |
| 1554 | if (relocs == NULL) |
| 1555 | return FALSE; |
| 1556 | |
| 1557 | if (bfd_seek (abfd, sec->rel_filepos, SEEK_SET) != 0 |
| 1558 | || bfd_bread (relocs, rel_size, abfd) != rel_size) |
| 1559 | goto error_return; |
| 1560 | |
| 1561 | if (obj_reloc_entry_size (abfd) == RELOC_STD_SIZE) |
| 1562 | { |
| 1563 | if (! sunos_scan_std_relocs (info, abfd, sec, |
| 1564 | (struct reloc_std_external *) relocs, |
| 1565 | rel_size)) |
| 1566 | goto error_return; |
| 1567 | } |
| 1568 | else |
| 1569 | { |
| 1570 | if (! sunos_scan_ext_relocs (info, abfd, sec, |
| 1571 | (struct reloc_ext_external *) relocs, |
| 1572 | rel_size)) |
| 1573 | goto error_return; |
| 1574 | } |
| 1575 | |
| 1576 | if (free_relocs != NULL) |
| 1577 | free (free_relocs); |
| 1578 | |
| 1579 | return TRUE; |
| 1580 | |
| 1581 | error_return: |
| 1582 | if (free_relocs != NULL) |
| 1583 | free (free_relocs); |
| 1584 | return FALSE; |
| 1585 | } |
| 1586 | |
| 1587 | /* Scan the relocs for an input section using standard relocs. We |
| 1588 | need to figure out what to do for each reloc against a dynamic |
| 1589 | symbol. If the symbol is in the .text section, an entry is made in |
| 1590 | the procedure linkage table. Note that this will do the wrong |
| 1591 | thing if the symbol is actually data; I don't think the Sun 3 |
| 1592 | native linker handles this case correctly either. If the symbol is |
| 1593 | not in the .text section, we must preserve the reloc as a dynamic |
| 1594 | reloc. FIXME: We should also handle the PIC relocs here by |
| 1595 | building global offset table entries. */ |
| 1596 | |
| 1597 | static bfd_boolean |
| 1598 | sunos_scan_std_relocs (info, abfd, sec, relocs, rel_size) |
| 1599 | struct bfd_link_info *info; |
| 1600 | bfd *abfd; |
| 1601 | asection *sec ATTRIBUTE_UNUSED; |
| 1602 | const struct reloc_std_external *relocs; |
| 1603 | bfd_size_type rel_size; |
| 1604 | { |
| 1605 | bfd *dynobj; |
| 1606 | asection *splt = NULL; |
| 1607 | asection *srel = NULL; |
| 1608 | struct sunos_link_hash_entry **sym_hashes; |
| 1609 | const struct reloc_std_external *rel, *relend; |
| 1610 | |
| 1611 | /* We only know how to handle m68k plt entries. */ |
| 1612 | if (bfd_get_arch (abfd) != bfd_arch_m68k) |
| 1613 | { |
| 1614 | bfd_set_error (bfd_error_invalid_target); |
| 1615 | return FALSE; |
| 1616 | } |
| 1617 | |
| 1618 | dynobj = NULL; |
| 1619 | |
| 1620 | sym_hashes = (struct sunos_link_hash_entry **) obj_aout_sym_hashes (abfd); |
| 1621 | |
| 1622 | relend = relocs + rel_size / RELOC_STD_SIZE; |
| 1623 | for (rel = relocs; rel < relend; rel++) |
| 1624 | { |
| 1625 | int r_index; |
| 1626 | struct sunos_link_hash_entry *h; |
| 1627 | |
| 1628 | /* We only want relocs against external symbols. */ |
| 1629 | if (bfd_header_big_endian (abfd)) |
| 1630 | { |
| 1631 | if ((rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG) == 0) |
| 1632 | continue; |
| 1633 | } |
| 1634 | else |
| 1635 | { |
| 1636 | if ((rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE) == 0) |
| 1637 | continue; |
| 1638 | } |
| 1639 | |
| 1640 | /* Get the symbol index. */ |
| 1641 | if (bfd_header_big_endian (abfd)) |
| 1642 | r_index = ((rel->r_index[0] << 16) |
| 1643 | | (rel->r_index[1] << 8) |
| 1644 | | rel->r_index[2]); |
| 1645 | else |
| 1646 | r_index = ((rel->r_index[2] << 16) |
| 1647 | | (rel->r_index[1] << 8) |
| 1648 | | rel->r_index[0]); |
| 1649 | |
| 1650 | /* Get the hash table entry. */ |
| 1651 | h = sym_hashes[r_index]; |
| 1652 | if (h == NULL) |
| 1653 | { |
| 1654 | /* This should not normally happen, but it will in any case |
| 1655 | be caught in the relocation phase. */ |
| 1656 | continue; |
| 1657 | } |
| 1658 | |
| 1659 | /* At this point common symbols have already been allocated, so |
| 1660 | we don't have to worry about them. We need to consider that |
| 1661 | we may have already seen this symbol and marked it undefined; |
| 1662 | if the symbol is really undefined, then SUNOS_DEF_DYNAMIC |
| 1663 | will be zero. */ |
| 1664 | if (h->root.root.type != bfd_link_hash_defined |
| 1665 | && h->root.root.type != bfd_link_hash_defweak |
| 1666 | && h->root.root.type != bfd_link_hash_undefined) |
| 1667 | continue; |
| 1668 | |
| 1669 | if ((h->flags & SUNOS_DEF_DYNAMIC) == 0 |
| 1670 | || (h->flags & SUNOS_DEF_REGULAR) != 0) |
| 1671 | continue; |
| 1672 | |
| 1673 | if (dynobj == NULL) |
| 1674 | { |
| 1675 | asection *sgot; |
| 1676 | |
| 1677 | if (! sunos_create_dynamic_sections (abfd, info, FALSE)) |
| 1678 | return FALSE; |
| 1679 | dynobj = sunos_hash_table (info)->dynobj; |
| 1680 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 1681 | srel = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 1682 | BFD_ASSERT (splt != NULL && srel != NULL); |
| 1683 | |
| 1684 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 1685 | BFD_ASSERT (sgot != NULL); |
| 1686 | if (sgot->size == 0) |
| 1687 | sgot->size = BYTES_IN_WORD; |
| 1688 | sunos_hash_table (info)->got_needed = TRUE; |
| 1689 | } |
| 1690 | |
| 1691 | BFD_ASSERT ((h->flags & SUNOS_REF_REGULAR) != 0); |
| 1692 | BFD_ASSERT (h->plt_offset != 0 |
| 1693 | || ((h->root.root.type == bfd_link_hash_defined |
| 1694 | || h->root.root.type == bfd_link_hash_defweak) |
| 1695 | ? (h->root.root.u.def.section->owner->flags |
| 1696 | & DYNAMIC) != 0 |
| 1697 | : (h->root.root.u.undef.abfd->flags & DYNAMIC) != 0)); |
| 1698 | |
| 1699 | /* This reloc is against a symbol defined only by a dynamic |
| 1700 | object. */ |
| 1701 | |
| 1702 | if (h->root.root.type == bfd_link_hash_undefined) |
| 1703 | { |
| 1704 | /* Presumably this symbol was marked as being undefined by |
| 1705 | an earlier reloc. */ |
| 1706 | srel->size += RELOC_STD_SIZE; |
| 1707 | } |
| 1708 | else if ((h->root.root.u.def.section->flags & SEC_CODE) == 0) |
| 1709 | { |
| 1710 | bfd *sub; |
| 1711 | |
| 1712 | /* This reloc is not in the .text section. It must be |
| 1713 | copied into the dynamic relocs. We mark the symbol as |
| 1714 | being undefined. */ |
| 1715 | srel->size += RELOC_STD_SIZE; |
| 1716 | sub = h->root.root.u.def.section->owner; |
| 1717 | h->root.root.type = bfd_link_hash_undefined; |
| 1718 | h->root.root.u.undef.abfd = sub; |
| 1719 | } |
| 1720 | else |
| 1721 | { |
| 1722 | /* This symbol is in the .text section. We must give it an |
| 1723 | entry in the procedure linkage table, if we have not |
| 1724 | already done so. We change the definition of the symbol |
| 1725 | to the .plt section; this will cause relocs against it to |
| 1726 | be handled correctly. */ |
| 1727 | if (h->plt_offset == 0) |
| 1728 | { |
| 1729 | if (splt->size == 0) |
| 1730 | splt->size = M68K_PLT_ENTRY_SIZE; |
| 1731 | h->plt_offset = splt->size; |
| 1732 | |
| 1733 | if ((h->flags & SUNOS_DEF_REGULAR) == 0) |
| 1734 | { |
| 1735 | h->root.root.u.def.section = splt; |
| 1736 | h->root.root.u.def.value = splt->size; |
| 1737 | } |
| 1738 | |
| 1739 | splt->size += M68K_PLT_ENTRY_SIZE; |
| 1740 | |
| 1741 | /* We may also need a dynamic reloc entry. */ |
| 1742 | if ((h->flags & SUNOS_DEF_REGULAR) == 0) |
| 1743 | srel->size += RELOC_STD_SIZE; |
| 1744 | } |
| 1745 | } |
| 1746 | } |
| 1747 | |
| 1748 | return TRUE; |
| 1749 | } |
| 1750 | |
| 1751 | /* Scan the relocs for an input section using extended relocs. We |
| 1752 | need to figure out what to do for each reloc against a dynamic |
| 1753 | symbol. If the reloc is a WDISP30, and the symbol is in the .text |
| 1754 | section, an entry is made in the procedure linkage table. |
| 1755 | Otherwise, we must preserve the reloc as a dynamic reloc. */ |
| 1756 | |
| 1757 | static bfd_boolean |
| 1758 | sunos_scan_ext_relocs (info, abfd, sec, relocs, rel_size) |
| 1759 | struct bfd_link_info *info; |
| 1760 | bfd *abfd; |
| 1761 | asection *sec ATTRIBUTE_UNUSED; |
| 1762 | const struct reloc_ext_external *relocs; |
| 1763 | bfd_size_type rel_size; |
| 1764 | { |
| 1765 | bfd *dynobj; |
| 1766 | struct sunos_link_hash_entry **sym_hashes; |
| 1767 | const struct reloc_ext_external *rel, *relend; |
| 1768 | asection *splt = NULL; |
| 1769 | asection *sgot = NULL; |
| 1770 | asection *srel = NULL; |
| 1771 | bfd_size_type amt; |
| 1772 | |
| 1773 | /* We only know how to handle SPARC plt entries. */ |
| 1774 | if (bfd_get_arch (abfd) != bfd_arch_sparc) |
| 1775 | { |
| 1776 | bfd_set_error (bfd_error_invalid_target); |
| 1777 | return FALSE; |
| 1778 | } |
| 1779 | |
| 1780 | dynobj = NULL; |
| 1781 | |
| 1782 | sym_hashes = (struct sunos_link_hash_entry **) obj_aout_sym_hashes (abfd); |
| 1783 | |
| 1784 | relend = relocs + rel_size / RELOC_EXT_SIZE; |
| 1785 | for (rel = relocs; rel < relend; rel++) |
| 1786 | { |
| 1787 | unsigned int r_index; |
| 1788 | int r_extern; |
| 1789 | int r_type; |
| 1790 | struct sunos_link_hash_entry *h = NULL; |
| 1791 | |
| 1792 | /* Swap in the reloc information. */ |
| 1793 | if (bfd_header_big_endian (abfd)) |
| 1794 | { |
| 1795 | r_index = ((rel->r_index[0] << 16) |
| 1796 | | (rel->r_index[1] << 8) |
| 1797 | | rel->r_index[2]); |
| 1798 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); |
| 1799 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) |
| 1800 | >> RELOC_EXT_BITS_TYPE_SH_BIG); |
| 1801 | } |
| 1802 | else |
| 1803 | { |
| 1804 | r_index = ((rel->r_index[2] << 16) |
| 1805 | | (rel->r_index[1] << 8) |
| 1806 | | rel->r_index[0]); |
| 1807 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); |
| 1808 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) |
| 1809 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); |
| 1810 | } |
| 1811 | |
| 1812 | if (r_extern) |
| 1813 | { |
| 1814 | h = sym_hashes[r_index]; |
| 1815 | if (h == NULL) |
| 1816 | { |
| 1817 | /* This should not normally happen, but it will in any |
| 1818 | case be caught in the relocation phase. */ |
| 1819 | continue; |
| 1820 | } |
| 1821 | } |
| 1822 | |
| 1823 | /* If this is a base relative reloc, we need to make an entry in |
| 1824 | the .got section. */ |
| 1825 | if (r_type == RELOC_BASE10 |
| 1826 | || r_type == RELOC_BASE13 |
| 1827 | || r_type == RELOC_BASE22) |
| 1828 | { |
| 1829 | if (dynobj == NULL) |
| 1830 | { |
| 1831 | if (! sunos_create_dynamic_sections (abfd, info, FALSE)) |
| 1832 | return FALSE; |
| 1833 | dynobj = sunos_hash_table (info)->dynobj; |
| 1834 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 1835 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 1836 | srel = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 1837 | BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); |
| 1838 | |
| 1839 | /* Make sure we have an initial entry in the .got table. */ |
| 1840 | if (sgot->size == 0) |
| 1841 | sgot->size = BYTES_IN_WORD; |
| 1842 | sunos_hash_table (info)->got_needed = TRUE; |
| 1843 | } |
| 1844 | |
| 1845 | if (r_extern) |
| 1846 | { |
| 1847 | if (h->got_offset != 0) |
| 1848 | continue; |
| 1849 | |
| 1850 | h->got_offset = sgot->size; |
| 1851 | } |
| 1852 | else |
| 1853 | { |
| 1854 | if (r_index >= bfd_get_symcount (abfd)) |
| 1855 | { |
| 1856 | /* This is abnormal, but should be caught in the |
| 1857 | relocation phase. */ |
| 1858 | continue; |
| 1859 | } |
| 1860 | |
| 1861 | if (adata (abfd).local_got_offsets == NULL) |
| 1862 | { |
| 1863 | amt = bfd_get_symcount (abfd); |
| 1864 | amt *= sizeof (bfd_vma); |
| 1865 | adata (abfd).local_got_offsets = |
| 1866 | (bfd_vma *) bfd_zalloc (abfd, amt); |
| 1867 | if (adata (abfd).local_got_offsets == NULL) |
| 1868 | return FALSE; |
| 1869 | } |
| 1870 | |
| 1871 | if (adata (abfd).local_got_offsets[r_index] != 0) |
| 1872 | continue; |
| 1873 | |
| 1874 | adata (abfd).local_got_offsets[r_index] = sgot->size; |
| 1875 | } |
| 1876 | |
| 1877 | sgot->size += BYTES_IN_WORD; |
| 1878 | |
| 1879 | /* If we are making a shared library, or if the symbol is |
| 1880 | defined by a dynamic object, we will need a dynamic reloc |
| 1881 | entry. */ |
| 1882 | if (info->shared |
| 1883 | || (h != NULL |
| 1884 | && (h->flags & SUNOS_DEF_DYNAMIC) != 0 |
| 1885 | && (h->flags & SUNOS_DEF_REGULAR) == 0)) |
| 1886 | srel->size += RELOC_EXT_SIZE; |
| 1887 | |
| 1888 | continue; |
| 1889 | } |
| 1890 | |
| 1891 | /* Otherwise, we are only interested in relocs against symbols |
| 1892 | defined in dynamic objects but not in regular objects. We |
| 1893 | only need to consider relocs against external symbols. */ |
| 1894 | if (! r_extern) |
| 1895 | { |
| 1896 | /* But, if we are creating a shared library, we need to |
| 1897 | generate an absolute reloc. */ |
| 1898 | if (info->shared) |
| 1899 | { |
| 1900 | if (dynobj == NULL) |
| 1901 | { |
| 1902 | if (! sunos_create_dynamic_sections (abfd, info, TRUE)) |
| 1903 | return FALSE; |
| 1904 | dynobj = sunos_hash_table (info)->dynobj; |
| 1905 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 1906 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 1907 | srel = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 1908 | BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); |
| 1909 | } |
| 1910 | |
| 1911 | srel->size += RELOC_EXT_SIZE; |
| 1912 | } |
| 1913 | |
| 1914 | continue; |
| 1915 | } |
| 1916 | |
| 1917 | /* At this point common symbols have already been allocated, so |
| 1918 | we don't have to worry about them. We need to consider that |
| 1919 | we may have already seen this symbol and marked it undefined; |
| 1920 | if the symbol is really undefined, then SUNOS_DEF_DYNAMIC |
| 1921 | will be zero. */ |
| 1922 | if (h->root.root.type != bfd_link_hash_defined |
| 1923 | && h->root.root.type != bfd_link_hash_defweak |
| 1924 | && h->root.root.type != bfd_link_hash_undefined) |
| 1925 | continue; |
| 1926 | |
| 1927 | if (r_type != RELOC_JMP_TBL |
| 1928 | && ! info->shared |
| 1929 | && ((h->flags & SUNOS_DEF_DYNAMIC) == 0 |
| 1930 | || (h->flags & SUNOS_DEF_REGULAR) != 0)) |
| 1931 | continue; |
| 1932 | |
| 1933 | if (r_type == RELOC_JMP_TBL |
| 1934 | && ! info->shared |
| 1935 | && (h->flags & SUNOS_DEF_DYNAMIC) == 0 |
| 1936 | && (h->flags & SUNOS_DEF_REGULAR) == 0) |
| 1937 | { |
| 1938 | /* This symbol is apparently undefined. Don't do anything |
| 1939 | here; just let the relocation routine report an undefined |
| 1940 | symbol. */ |
| 1941 | continue; |
| 1942 | } |
| 1943 | |
| 1944 | if (strcmp (h->root.root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0) |
| 1945 | continue; |
| 1946 | |
| 1947 | if (dynobj == NULL) |
| 1948 | { |
| 1949 | if (! sunos_create_dynamic_sections (abfd, info, FALSE)) |
| 1950 | return FALSE; |
| 1951 | dynobj = sunos_hash_table (info)->dynobj; |
| 1952 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 1953 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 1954 | srel = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 1955 | BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); |
| 1956 | |
| 1957 | /* Make sure we have an initial entry in the .got table. */ |
| 1958 | if (sgot->size == 0) |
| 1959 | sgot->size = BYTES_IN_WORD; |
| 1960 | sunos_hash_table (info)->got_needed = TRUE; |
| 1961 | } |
| 1962 | |
| 1963 | BFD_ASSERT (r_type == RELOC_JMP_TBL |
| 1964 | || info->shared |
| 1965 | || (h->flags & SUNOS_REF_REGULAR) != 0); |
| 1966 | BFD_ASSERT (r_type == RELOC_JMP_TBL |
| 1967 | || info->shared |
| 1968 | || h->plt_offset != 0 |
| 1969 | || ((h->root.root.type == bfd_link_hash_defined |
| 1970 | || h->root.root.type == bfd_link_hash_defweak) |
| 1971 | ? (h->root.root.u.def.section->owner->flags |
| 1972 | & DYNAMIC) != 0 |
| 1973 | : (h->root.root.u.undef.abfd->flags & DYNAMIC) != 0)); |
| 1974 | |
| 1975 | /* This reloc is against a symbol defined only by a dynamic |
| 1976 | object, or it is a jump table reloc from PIC compiled code. */ |
| 1977 | |
| 1978 | if (r_type != RELOC_JMP_TBL |
| 1979 | && h->root.root.type == bfd_link_hash_undefined) |
| 1980 | { |
| 1981 | /* Presumably this symbol was marked as being undefined by |
| 1982 | an earlier reloc. */ |
| 1983 | srel->size += RELOC_EXT_SIZE; |
| 1984 | } |
| 1985 | else if (r_type != RELOC_JMP_TBL |
| 1986 | && (h->root.root.u.def.section->flags & SEC_CODE) == 0) |
| 1987 | { |
| 1988 | bfd *sub; |
| 1989 | |
| 1990 | /* This reloc is not in the .text section. It must be |
| 1991 | copied into the dynamic relocs. We mark the symbol as |
| 1992 | being undefined. */ |
| 1993 | srel->size += RELOC_EXT_SIZE; |
| 1994 | if ((h->flags & SUNOS_DEF_REGULAR) == 0) |
| 1995 | { |
| 1996 | sub = h->root.root.u.def.section->owner; |
| 1997 | h->root.root.type = bfd_link_hash_undefined; |
| 1998 | h->root.root.u.undef.abfd = sub; |
| 1999 | } |
| 2000 | } |
| 2001 | else |
| 2002 | { |
| 2003 | /* This symbol is in the .text section. We must give it an |
| 2004 | entry in the procedure linkage table, if we have not |
| 2005 | already done so. We change the definition of the symbol |
| 2006 | to the .plt section; this will cause relocs against it to |
| 2007 | be handled correctly. */ |
| 2008 | if (h->plt_offset == 0) |
| 2009 | { |
| 2010 | if (splt->size == 0) |
| 2011 | splt->size = SPARC_PLT_ENTRY_SIZE; |
| 2012 | h->plt_offset = splt->size; |
| 2013 | |
| 2014 | if ((h->flags & SUNOS_DEF_REGULAR) == 0) |
| 2015 | { |
| 2016 | if (h->root.root.type == bfd_link_hash_undefined) |
| 2017 | h->root.root.type = bfd_link_hash_defined; |
| 2018 | h->root.root.u.def.section = splt; |
| 2019 | h->root.root.u.def.value = splt->size; |
| 2020 | } |
| 2021 | |
| 2022 | splt->size += SPARC_PLT_ENTRY_SIZE; |
| 2023 | |
| 2024 | /* We will also need a dynamic reloc entry, unless this |
| 2025 | is a JMP_TBL reloc produced by linking PIC compiled |
| 2026 | code, and we are not making a shared library. */ |
| 2027 | if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0) |
| 2028 | srel->size += RELOC_EXT_SIZE; |
| 2029 | } |
| 2030 | |
| 2031 | /* If we are creating a shared library, we need to copy over |
| 2032 | any reloc other than a jump table reloc. */ |
| 2033 | if (info->shared && r_type != RELOC_JMP_TBL) |
| 2034 | srel->size += RELOC_EXT_SIZE; |
| 2035 | } |
| 2036 | } |
| 2037 | |
| 2038 | return TRUE; |
| 2039 | } |
| 2040 | |
| 2041 | /* Build the hash table of dynamic symbols, and to mark as written all |
| 2042 | symbols from dynamic objects which we do not plan to write out. */ |
| 2043 | |
| 2044 | static bfd_boolean |
| 2045 | sunos_scan_dynamic_symbol (h, data) |
| 2046 | struct sunos_link_hash_entry *h; |
| 2047 | PTR data; |
| 2048 | { |
| 2049 | struct bfd_link_info *info = (struct bfd_link_info *) data; |
| 2050 | |
| 2051 | if (h->root.root.type == bfd_link_hash_warning) |
| 2052 | h = (struct sunos_link_hash_entry *) h->root.root.u.i.link; |
| 2053 | |
| 2054 | /* Set the written flag for symbols we do not want to write out as |
| 2055 | part of the regular symbol table. This is all symbols which are |
| 2056 | not defined in a regular object file. For some reason symbols |
| 2057 | which are referenced by a regular object and defined by a dynamic |
| 2058 | object do not seem to show up in the regular symbol table. It is |
| 2059 | possible for a symbol to have only SUNOS_REF_REGULAR set here, it |
| 2060 | is an undefined symbol which was turned into a common symbol |
| 2061 | because it was found in an archive object which was not included |
| 2062 | in the link. */ |
| 2063 | if ((h->flags & SUNOS_DEF_REGULAR) == 0 |
| 2064 | && (h->flags & SUNOS_DEF_DYNAMIC) != 0 |
| 2065 | && strcmp (h->root.root.root.string, "__DYNAMIC") != 0) |
| 2066 | h->root.written = TRUE; |
| 2067 | |
| 2068 | /* If this symbol is defined by a dynamic object and referenced by a |
| 2069 | regular object, see whether we gave it a reasonable value while |
| 2070 | scanning the relocs. */ |
| 2071 | |
| 2072 | if ((h->flags & SUNOS_DEF_REGULAR) == 0 |
| 2073 | && (h->flags & SUNOS_DEF_DYNAMIC) != 0 |
| 2074 | && (h->flags & SUNOS_REF_REGULAR) != 0) |
| 2075 | { |
| 2076 | if ((h->root.root.type == bfd_link_hash_defined |
| 2077 | || h->root.root.type == bfd_link_hash_defweak) |
| 2078 | && ((h->root.root.u.def.section->owner->flags & DYNAMIC) != 0) |
| 2079 | && h->root.root.u.def.section->output_section == NULL) |
| 2080 | { |
| 2081 | bfd *sub; |
| 2082 | |
| 2083 | /* This symbol is currently defined in a dynamic section |
| 2084 | which is not being put into the output file. This |
| 2085 | implies that there is no reloc against the symbol. I'm |
| 2086 | not sure why this case would ever occur. In any case, we |
| 2087 | change the symbol to be undefined. */ |
| 2088 | sub = h->root.root.u.def.section->owner; |
| 2089 | h->root.root.type = bfd_link_hash_undefined; |
| 2090 | h->root.root.u.undef.abfd = sub; |
| 2091 | } |
| 2092 | } |
| 2093 | |
| 2094 | /* If this symbol is defined or referenced by a regular file, add it |
| 2095 | to the dynamic symbols. */ |
| 2096 | if ((h->flags & (SUNOS_DEF_REGULAR | SUNOS_REF_REGULAR)) != 0) |
| 2097 | { |
| 2098 | asection *s; |
| 2099 | size_t len; |
| 2100 | bfd_byte *contents; |
| 2101 | unsigned char *name; |
| 2102 | unsigned long hash; |
| 2103 | bfd *dynobj; |
| 2104 | |
| 2105 | BFD_ASSERT (h->dynindx == -2); |
| 2106 | |
| 2107 | dynobj = sunos_hash_table (info)->dynobj; |
| 2108 | |
| 2109 | h->dynindx = sunos_hash_table (info)->dynsymcount; |
| 2110 | ++sunos_hash_table (info)->dynsymcount; |
| 2111 | |
| 2112 | len = strlen (h->root.root.root.string); |
| 2113 | |
| 2114 | /* We don't bother to construct a BFD hash table for the strings |
| 2115 | which are the names of the dynamic symbols. Using a hash |
| 2116 | table for the regular symbols is beneficial, because the |
| 2117 | regular symbols includes the debugging symbols, which have |
| 2118 | long names and are often duplicated in several object files. |
| 2119 | There are no debugging symbols in the dynamic symbols. */ |
| 2120 | s = bfd_get_section_by_name (dynobj, ".dynstr"); |
| 2121 | BFD_ASSERT (s != NULL); |
| 2122 | contents = (bfd_byte *) bfd_realloc (s->contents, |
| 2123 | s->size + len + 1); |
| 2124 | if (contents == NULL) |
| 2125 | return FALSE; |
| 2126 | s->contents = contents; |
| 2127 | |
| 2128 | h->dynstr_index = s->size; |
| 2129 | strcpy ((char *) contents + s->size, h->root.root.root.string); |
| 2130 | s->size += len + 1; |
| 2131 | |
| 2132 | /* Add it to the dynamic hash table. */ |
| 2133 | name = (unsigned char *) h->root.root.root.string; |
| 2134 | hash = 0; |
| 2135 | while (*name != '\0') |
| 2136 | hash = (hash << 1) + *name++; |
| 2137 | hash &= 0x7fffffff; |
| 2138 | hash %= sunos_hash_table (info)->bucketcount; |
| 2139 | |
| 2140 | s = bfd_get_section_by_name (dynobj, ".hash"); |
| 2141 | BFD_ASSERT (s != NULL); |
| 2142 | |
| 2143 | if (GET_SWORD (dynobj, s->contents + hash * HASH_ENTRY_SIZE) == -1) |
| 2144 | PUT_WORD (dynobj, h->dynindx, s->contents + hash * HASH_ENTRY_SIZE); |
| 2145 | else |
| 2146 | { |
| 2147 | bfd_vma next; |
| 2148 | |
| 2149 | next = GET_WORD (dynobj, |
| 2150 | (s->contents |
| 2151 | + hash * HASH_ENTRY_SIZE |
| 2152 | + BYTES_IN_WORD)); |
| 2153 | PUT_WORD (dynobj, s->size / HASH_ENTRY_SIZE, |
| 2154 | s->contents + hash * HASH_ENTRY_SIZE + BYTES_IN_WORD); |
| 2155 | PUT_WORD (dynobj, h->dynindx, s->contents + s->size); |
| 2156 | PUT_WORD (dynobj, next, s->contents + s->size + BYTES_IN_WORD); |
| 2157 | s->size += HASH_ENTRY_SIZE; |
| 2158 | } |
| 2159 | } |
| 2160 | |
| 2161 | return TRUE; |
| 2162 | } |
| 2163 | |
| 2164 | /* Link a dynamic object. We actually don't have anything to do at |
| 2165 | this point. This entry point exists to prevent the regular linker |
| 2166 | code from doing anything with the object. */ |
| 2167 | |
| 2168 | static bfd_boolean |
| 2169 | sunos_link_dynamic_object (info, abfd) |
| 2170 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
| 2171 | bfd *abfd ATTRIBUTE_UNUSED; |
| 2172 | { |
| 2173 | return TRUE; |
| 2174 | } |
| 2175 | |
| 2176 | /* Write out a dynamic symbol. This is called by the final traversal |
| 2177 | over the symbol table. */ |
| 2178 | |
| 2179 | static bfd_boolean |
| 2180 | sunos_write_dynamic_symbol (output_bfd, info, harg) |
| 2181 | bfd *output_bfd; |
| 2182 | struct bfd_link_info *info; |
| 2183 | struct aout_link_hash_entry *harg; |
| 2184 | { |
| 2185 | struct sunos_link_hash_entry *h = (struct sunos_link_hash_entry *) harg; |
| 2186 | int type; |
| 2187 | bfd_vma val; |
| 2188 | asection *s; |
| 2189 | struct external_nlist *outsym; |
| 2190 | |
| 2191 | /* If this symbol is in the procedure linkage table, fill in the |
| 2192 | table entry. */ |
| 2193 | if (h->plt_offset != 0) |
| 2194 | { |
| 2195 | bfd *dynobj; |
| 2196 | asection *splt; |
| 2197 | bfd_byte *p; |
| 2198 | bfd_vma r_address; |
| 2199 | |
| 2200 | dynobj = sunos_hash_table (info)->dynobj; |
| 2201 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 2202 | p = splt->contents + h->plt_offset; |
| 2203 | |
| 2204 | s = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 2205 | |
| 2206 | r_address = (splt->output_section->vma |
| 2207 | + splt->output_offset |
| 2208 | + h->plt_offset); |
| 2209 | |
| 2210 | switch (bfd_get_arch (output_bfd)) |
| 2211 | { |
| 2212 | case bfd_arch_sparc: |
| 2213 | if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0) |
| 2214 | { |
| 2215 | bfd_put_32 (output_bfd, SPARC_PLT_ENTRY_WORD0, p); |
| 2216 | bfd_put_32 (output_bfd, |
| 2217 | (SPARC_PLT_ENTRY_WORD1 |
| 2218 | + (((- (h->plt_offset + 4) >> 2) |
| 2219 | & 0x3fffffff))), |
| 2220 | p + 4); |
| 2221 | bfd_put_32 (output_bfd, SPARC_PLT_ENTRY_WORD2 + s->reloc_count, |
| 2222 | p + 8); |
| 2223 | } |
| 2224 | else |
| 2225 | { |
| 2226 | val = (h->root.root.u.def.section->output_section->vma |
| 2227 | + h->root.root.u.def.section->output_offset |
| 2228 | + h->root.root.u.def.value); |
| 2229 | bfd_put_32 (output_bfd, |
| 2230 | SPARC_PLT_PIC_WORD0 + ((val >> 10) & 0x3fffff), |
| 2231 | p); |
| 2232 | bfd_put_32 (output_bfd, |
| 2233 | SPARC_PLT_PIC_WORD1 + (val & 0x3ff), |
| 2234 | p + 4); |
| 2235 | bfd_put_32 (output_bfd, SPARC_PLT_PIC_WORD2, p + 8); |
| 2236 | } |
| 2237 | break; |
| 2238 | |
| 2239 | case bfd_arch_m68k: |
| 2240 | if (! info->shared && (h->flags & SUNOS_DEF_REGULAR) != 0) |
| 2241 | abort (); |
| 2242 | bfd_put_16 (output_bfd, M68K_PLT_ENTRY_WORD0, p); |
| 2243 | bfd_put_32 (output_bfd, (- (h->plt_offset + 2)), p + 2); |
| 2244 | bfd_put_16 (output_bfd, (bfd_vma) s->reloc_count, p + 6); |
| 2245 | r_address += 2; |
| 2246 | break; |
| 2247 | |
| 2248 | default: |
| 2249 | abort (); |
| 2250 | } |
| 2251 | |
| 2252 | /* We also need to add a jump table reloc, unless this is the |
| 2253 | result of a JMP_TBL reloc from PIC compiled code. */ |
| 2254 | if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0) |
| 2255 | { |
| 2256 | BFD_ASSERT (h->dynindx >= 0); |
| 2257 | BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) |
| 2258 | < s->size); |
| 2259 | p = s->contents + s->reloc_count * obj_reloc_entry_size (output_bfd); |
| 2260 | if (obj_reloc_entry_size (output_bfd) == RELOC_STD_SIZE) |
| 2261 | { |
| 2262 | struct reloc_std_external *srel; |
| 2263 | |
| 2264 | srel = (struct reloc_std_external *) p; |
| 2265 | PUT_WORD (output_bfd, r_address, srel->r_address); |
| 2266 | if (bfd_header_big_endian (output_bfd)) |
| 2267 | { |
| 2268 | srel->r_index[0] = (bfd_byte) (h->dynindx >> 16); |
| 2269 | srel->r_index[1] = (bfd_byte) (h->dynindx >> 8); |
| 2270 | srel->r_index[2] = (bfd_byte) (h->dynindx); |
| 2271 | srel->r_type[0] = (RELOC_STD_BITS_EXTERN_BIG |
| 2272 | | RELOC_STD_BITS_JMPTABLE_BIG); |
| 2273 | } |
| 2274 | else |
| 2275 | { |
| 2276 | srel->r_index[2] = (bfd_byte) (h->dynindx >> 16); |
| 2277 | srel->r_index[1] = (bfd_byte) (h->dynindx >> 8); |
| 2278 | srel->r_index[0] = (bfd_byte)h->dynindx; |
| 2279 | srel->r_type[0] = (RELOC_STD_BITS_EXTERN_LITTLE |
| 2280 | | RELOC_STD_BITS_JMPTABLE_LITTLE); |
| 2281 | } |
| 2282 | } |
| 2283 | else |
| 2284 | { |
| 2285 | struct reloc_ext_external *erel; |
| 2286 | |
| 2287 | erel = (struct reloc_ext_external *) p; |
| 2288 | PUT_WORD (output_bfd, r_address, erel->r_address); |
| 2289 | if (bfd_header_big_endian (output_bfd)) |
| 2290 | { |
| 2291 | erel->r_index[0] = (bfd_byte) (h->dynindx >> 16); |
| 2292 | erel->r_index[1] = (bfd_byte) (h->dynindx >> 8); |
| 2293 | erel->r_index[2] = (bfd_byte)h->dynindx; |
| 2294 | erel->r_type[0] = |
| 2295 | (RELOC_EXT_BITS_EXTERN_BIG |
| 2296 | | (RELOC_JMP_SLOT << RELOC_EXT_BITS_TYPE_SH_BIG)); |
| 2297 | } |
| 2298 | else |
| 2299 | { |
| 2300 | erel->r_index[2] = (bfd_byte) (h->dynindx >> 16); |
| 2301 | erel->r_index[1] = (bfd_byte) (h->dynindx >> 8); |
| 2302 | erel->r_index[0] = (bfd_byte)h->dynindx; |
| 2303 | erel->r_type[0] = |
| 2304 | (RELOC_EXT_BITS_EXTERN_LITTLE |
| 2305 | | (RELOC_JMP_SLOT << RELOC_EXT_BITS_TYPE_SH_LITTLE)); |
| 2306 | } |
| 2307 | PUT_WORD (output_bfd, (bfd_vma) 0, erel->r_addend); |
| 2308 | } |
| 2309 | |
| 2310 | ++s->reloc_count; |
| 2311 | } |
| 2312 | } |
| 2313 | |
| 2314 | /* If this is not a dynamic symbol, we don't have to do anything |
| 2315 | else. We only check this after handling the PLT entry, because |
| 2316 | we can have a PLT entry for a nondynamic symbol when linking PIC |
| 2317 | compiled code from a regular object. */ |
| 2318 | if (h->dynindx < 0) |
| 2319 | return TRUE; |
| 2320 | |
| 2321 | switch (h->root.root.type) |
| 2322 | { |
| 2323 | default: |
| 2324 | case bfd_link_hash_new: |
| 2325 | abort (); |
| 2326 | /* Avoid variable not initialized warnings. */ |
| 2327 | return TRUE; |
| 2328 | case bfd_link_hash_undefined: |
| 2329 | type = N_UNDF | N_EXT; |
| 2330 | val = 0; |
| 2331 | break; |
| 2332 | case bfd_link_hash_defined: |
| 2333 | case bfd_link_hash_defweak: |
| 2334 | { |
| 2335 | asection *sec; |
| 2336 | asection *output_section; |
| 2337 | |
| 2338 | sec = h->root.root.u.def.section; |
| 2339 | output_section = sec->output_section; |
| 2340 | BFD_ASSERT (bfd_is_abs_section (output_section) |
| 2341 | || output_section->owner == output_bfd); |
| 2342 | if (h->plt_offset != 0 |
| 2343 | && (h->flags & SUNOS_DEF_REGULAR) == 0) |
| 2344 | { |
| 2345 | type = N_UNDF | N_EXT; |
| 2346 | val = 0; |
| 2347 | } |
| 2348 | else |
| 2349 | { |
| 2350 | if (output_section == obj_textsec (output_bfd)) |
| 2351 | type = (h->root.root.type == bfd_link_hash_defined |
| 2352 | ? N_TEXT |
| 2353 | : N_WEAKT); |
| 2354 | else if (output_section == obj_datasec (output_bfd)) |
| 2355 | type = (h->root.root.type == bfd_link_hash_defined |
| 2356 | ? N_DATA |
| 2357 | : N_WEAKD); |
| 2358 | else if (output_section == obj_bsssec (output_bfd)) |
| 2359 | type = (h->root.root.type == bfd_link_hash_defined |
| 2360 | ? N_BSS |
| 2361 | : N_WEAKB); |
| 2362 | else |
| 2363 | type = (h->root.root.type == bfd_link_hash_defined |
| 2364 | ? N_ABS |
| 2365 | : N_WEAKA); |
| 2366 | type |= N_EXT; |
| 2367 | val = (h->root.root.u.def.value |
| 2368 | + output_section->vma |
| 2369 | + sec->output_offset); |
| 2370 | } |
| 2371 | } |
| 2372 | break; |
| 2373 | case bfd_link_hash_common: |
| 2374 | type = N_UNDF | N_EXT; |
| 2375 | val = h->root.root.u.c.size; |
| 2376 | break; |
| 2377 | case bfd_link_hash_undefweak: |
| 2378 | type = N_WEAKU; |
| 2379 | val = 0; |
| 2380 | break; |
| 2381 | case bfd_link_hash_indirect: |
| 2382 | case bfd_link_hash_warning: |
| 2383 | /* FIXME: Ignore these for now. The circumstances under which |
| 2384 | they should be written out are not clear to me. */ |
| 2385 | return TRUE; |
| 2386 | } |
| 2387 | |
| 2388 | s = bfd_get_section_by_name (sunos_hash_table (info)->dynobj, ".dynsym"); |
| 2389 | BFD_ASSERT (s != NULL); |
| 2390 | outsym = ((struct external_nlist *) |
| 2391 | (s->contents + h->dynindx * EXTERNAL_NLIST_SIZE)); |
| 2392 | |
| 2393 | H_PUT_8 (output_bfd, type, outsym->e_type); |
| 2394 | H_PUT_8 (output_bfd, 0, outsym->e_other); |
| 2395 | |
| 2396 | /* FIXME: The native linker doesn't use 0 for desc. It seems to use |
| 2397 | one less than the desc value in the shared library, although that |
| 2398 | seems unlikely. */ |
| 2399 | H_PUT_16 (output_bfd, 0, outsym->e_desc); |
| 2400 | |
| 2401 | PUT_WORD (output_bfd, h->dynstr_index, outsym->e_strx); |
| 2402 | PUT_WORD (output_bfd, val, outsym->e_value); |
| 2403 | |
| 2404 | return TRUE; |
| 2405 | } |
| 2406 | |
| 2407 | /* This is called for each reloc against an external symbol. If this |
| 2408 | is a reloc which are are going to copy as a dynamic reloc, then |
| 2409 | copy it over, and tell the caller to not bother processing this |
| 2410 | reloc. */ |
| 2411 | |
| 2412 | static bfd_boolean |
| 2413 | sunos_check_dynamic_reloc (info, input_bfd, input_section, harg, reloc, |
| 2414 | contents, skip, relocationp) |
| 2415 | struct bfd_link_info *info; |
| 2416 | bfd *input_bfd; |
| 2417 | asection *input_section; |
| 2418 | struct aout_link_hash_entry *harg; |
| 2419 | PTR reloc; |
| 2420 | bfd_byte *contents ATTRIBUTE_UNUSED; |
| 2421 | bfd_boolean *skip; |
| 2422 | bfd_vma *relocationp; |
| 2423 | { |
| 2424 | struct sunos_link_hash_entry *h = (struct sunos_link_hash_entry *) harg; |
| 2425 | bfd *dynobj; |
| 2426 | bfd_boolean baserel; |
| 2427 | bfd_boolean jmptbl; |
| 2428 | bfd_boolean pcrel; |
| 2429 | asection *s; |
| 2430 | bfd_byte *p; |
| 2431 | long indx; |
| 2432 | |
| 2433 | *skip = FALSE; |
| 2434 | |
| 2435 | dynobj = sunos_hash_table (info)->dynobj; |
| 2436 | |
| 2437 | if (h != NULL |
| 2438 | && h->plt_offset != 0 |
| 2439 | && (info->shared |
| 2440 | || (h->flags & SUNOS_DEF_REGULAR) == 0)) |
| 2441 | { |
| 2442 | asection *splt; |
| 2443 | |
| 2444 | /* Redirect the relocation to the PLT entry. */ |
| 2445 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 2446 | *relocationp = (splt->output_section->vma |
| 2447 | + splt->output_offset |
| 2448 | + h->plt_offset); |
| 2449 | } |
| 2450 | |
| 2451 | if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) |
| 2452 | { |
| 2453 | struct reloc_std_external *srel; |
| 2454 | |
| 2455 | srel = (struct reloc_std_external *) reloc; |
| 2456 | if (bfd_header_big_endian (input_bfd)) |
| 2457 | { |
| 2458 | baserel = (0 != (srel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); |
| 2459 | jmptbl = (0 != (srel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); |
| 2460 | pcrel = (0 != (srel->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); |
| 2461 | } |
| 2462 | else |
| 2463 | { |
| 2464 | baserel = (0 != (srel->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); |
| 2465 | jmptbl = (0 != (srel->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); |
| 2466 | pcrel = (0 != (srel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); |
| 2467 | } |
| 2468 | } |
| 2469 | else |
| 2470 | { |
| 2471 | struct reloc_ext_external *erel; |
| 2472 | int r_type; |
| 2473 | |
| 2474 | erel = (struct reloc_ext_external *) reloc; |
| 2475 | if (bfd_header_big_endian (input_bfd)) |
| 2476 | r_type = ((erel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) |
| 2477 | >> RELOC_EXT_BITS_TYPE_SH_BIG); |
| 2478 | else |
| 2479 | r_type = ((erel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) |
| 2480 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); |
| 2481 | baserel = (r_type == RELOC_BASE10 |
| 2482 | || r_type == RELOC_BASE13 |
| 2483 | || r_type == RELOC_BASE22); |
| 2484 | jmptbl = r_type == RELOC_JMP_TBL; |
| 2485 | pcrel = (r_type == RELOC_DISP8 |
| 2486 | || r_type == RELOC_DISP16 |
| 2487 | || r_type == RELOC_DISP32 |
| 2488 | || r_type == RELOC_WDISP30 |
| 2489 | || r_type == RELOC_WDISP22); |
| 2490 | /* We don't consider the PC10 and PC22 types to be PC relative, |
| 2491 | because they are pcrel_offset. */ |
| 2492 | } |
| 2493 | |
| 2494 | if (baserel) |
| 2495 | { |
| 2496 | bfd_vma *got_offsetp; |
| 2497 | asection *sgot; |
| 2498 | |
| 2499 | if (h != NULL) |
| 2500 | got_offsetp = &h->got_offset; |
| 2501 | else if (adata (input_bfd).local_got_offsets == NULL) |
| 2502 | got_offsetp = NULL; |
| 2503 | else |
| 2504 | { |
| 2505 | struct reloc_std_external *srel; |
| 2506 | int r_index; |
| 2507 | |
| 2508 | srel = (struct reloc_std_external *) reloc; |
| 2509 | if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) |
| 2510 | { |
| 2511 | if (bfd_header_big_endian (input_bfd)) |
| 2512 | r_index = ((srel->r_index[0] << 16) |
| 2513 | | (srel->r_index[1] << 8) |
| 2514 | | srel->r_index[2]); |
| 2515 | else |
| 2516 | r_index = ((srel->r_index[2] << 16) |
| 2517 | | (srel->r_index[1] << 8) |
| 2518 | | srel->r_index[0]); |
| 2519 | } |
| 2520 | else |
| 2521 | { |
| 2522 | struct reloc_ext_external *erel; |
| 2523 | |
| 2524 | erel = (struct reloc_ext_external *) reloc; |
| 2525 | if (bfd_header_big_endian (input_bfd)) |
| 2526 | r_index = ((erel->r_index[0] << 16) |
| 2527 | | (erel->r_index[1] << 8) |
| 2528 | | erel->r_index[2]); |
| 2529 | else |
| 2530 | r_index = ((erel->r_index[2] << 16) |
| 2531 | | (erel->r_index[1] << 8) |
| 2532 | | erel->r_index[0]); |
| 2533 | } |
| 2534 | |
| 2535 | got_offsetp = adata (input_bfd).local_got_offsets + r_index; |
| 2536 | } |
| 2537 | |
| 2538 | BFD_ASSERT (got_offsetp != NULL && *got_offsetp != 0); |
| 2539 | |
| 2540 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 2541 | |
| 2542 | /* We set the least significant bit to indicate whether we have |
| 2543 | already initialized the GOT entry. */ |
| 2544 | if ((*got_offsetp & 1) == 0) |
| 2545 | { |
| 2546 | if (h == NULL |
| 2547 | || (! info->shared |
| 2548 | && ((h->flags & SUNOS_DEF_DYNAMIC) == 0 |
| 2549 | || (h->flags & SUNOS_DEF_REGULAR) != 0))) |
| 2550 | PUT_WORD (dynobj, *relocationp, sgot->contents + *got_offsetp); |
| 2551 | else |
| 2552 | PUT_WORD (dynobj, 0, sgot->contents + *got_offsetp); |
| 2553 | |
| 2554 | if (info->shared |
| 2555 | || (h != NULL |
| 2556 | && (h->flags & SUNOS_DEF_DYNAMIC) != 0 |
| 2557 | && (h->flags & SUNOS_DEF_REGULAR) == 0)) |
| 2558 | { |
| 2559 | /* We need to create a GLOB_DAT or 32 reloc to tell the |
| 2560 | dynamic linker to fill in this entry in the table. */ |
| 2561 | |
| 2562 | s = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 2563 | BFD_ASSERT (s != NULL); |
| 2564 | BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) |
| 2565 | < s->size); |
| 2566 | |
| 2567 | p = (s->contents |
| 2568 | + s->reloc_count * obj_reloc_entry_size (dynobj)); |
| 2569 | |
| 2570 | if (h != NULL) |
| 2571 | indx = h->dynindx; |
| 2572 | else |
| 2573 | indx = 0; |
| 2574 | |
| 2575 | if (obj_reloc_entry_size (dynobj) == RELOC_STD_SIZE) |
| 2576 | { |
| 2577 | struct reloc_std_external *srel; |
| 2578 | |
| 2579 | srel = (struct reloc_std_external *) p; |
| 2580 | PUT_WORD (dynobj, |
| 2581 | (*got_offsetp |
| 2582 | + sgot->output_section->vma |
| 2583 | + sgot->output_offset), |
| 2584 | srel->r_address); |
| 2585 | if (bfd_header_big_endian (dynobj)) |
| 2586 | { |
| 2587 | srel->r_index[0] = (bfd_byte) (indx >> 16); |
| 2588 | srel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2589 | srel->r_index[2] = (bfd_byte)indx; |
| 2590 | if (h == NULL) |
| 2591 | srel->r_type[0] = 2 << RELOC_STD_BITS_LENGTH_SH_BIG; |
| 2592 | else |
| 2593 | srel->r_type[0] = |
| 2594 | (RELOC_STD_BITS_EXTERN_BIG |
| 2595 | | RELOC_STD_BITS_BASEREL_BIG |
| 2596 | | RELOC_STD_BITS_RELATIVE_BIG |
| 2597 | | (2 << RELOC_STD_BITS_LENGTH_SH_BIG)); |
| 2598 | } |
| 2599 | else |
| 2600 | { |
| 2601 | srel->r_index[2] = (bfd_byte) (indx >> 16); |
| 2602 | srel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2603 | srel->r_index[0] = (bfd_byte)indx; |
| 2604 | if (h == NULL) |
| 2605 | srel->r_type[0] = 2 << RELOC_STD_BITS_LENGTH_SH_LITTLE; |
| 2606 | else |
| 2607 | srel->r_type[0] = |
| 2608 | (RELOC_STD_BITS_EXTERN_LITTLE |
| 2609 | | RELOC_STD_BITS_BASEREL_LITTLE |
| 2610 | | RELOC_STD_BITS_RELATIVE_LITTLE |
| 2611 | | (2 << RELOC_STD_BITS_LENGTH_SH_LITTLE)); |
| 2612 | } |
| 2613 | } |
| 2614 | else |
| 2615 | { |
| 2616 | struct reloc_ext_external *erel; |
| 2617 | |
| 2618 | erel = (struct reloc_ext_external *) p; |
| 2619 | PUT_WORD (dynobj, |
| 2620 | (*got_offsetp |
| 2621 | + sgot->output_section->vma |
| 2622 | + sgot->output_offset), |
| 2623 | erel->r_address); |
| 2624 | if (bfd_header_big_endian (dynobj)) |
| 2625 | { |
| 2626 | erel->r_index[0] = (bfd_byte) (indx >> 16); |
| 2627 | erel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2628 | erel->r_index[2] = (bfd_byte)indx; |
| 2629 | if (h == NULL) |
| 2630 | erel->r_type[0] = |
| 2631 | RELOC_32 << RELOC_EXT_BITS_TYPE_SH_BIG; |
| 2632 | else |
| 2633 | erel->r_type[0] = |
| 2634 | (RELOC_EXT_BITS_EXTERN_BIG |
| 2635 | | (RELOC_GLOB_DAT << RELOC_EXT_BITS_TYPE_SH_BIG)); |
| 2636 | } |
| 2637 | else |
| 2638 | { |
| 2639 | erel->r_index[2] = (bfd_byte) (indx >> 16); |
| 2640 | erel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2641 | erel->r_index[0] = (bfd_byte)indx; |
| 2642 | if (h == NULL) |
| 2643 | erel->r_type[0] = |
| 2644 | RELOC_32 << RELOC_EXT_BITS_TYPE_SH_LITTLE; |
| 2645 | else |
| 2646 | erel->r_type[0] = |
| 2647 | (RELOC_EXT_BITS_EXTERN_LITTLE |
| 2648 | | (RELOC_GLOB_DAT |
| 2649 | << RELOC_EXT_BITS_TYPE_SH_LITTLE)); |
| 2650 | } |
| 2651 | PUT_WORD (dynobj, 0, erel->r_addend); |
| 2652 | } |
| 2653 | |
| 2654 | ++s->reloc_count; |
| 2655 | } |
| 2656 | |
| 2657 | *got_offsetp |= 1; |
| 2658 | } |
| 2659 | |
| 2660 | *relocationp = (sgot->vma |
| 2661 | + (*got_offsetp &~ (bfd_vma) 1) |
| 2662 | - sunos_hash_table (info)->got_base); |
| 2663 | |
| 2664 | /* There is nothing else to do for a base relative reloc. */ |
| 2665 | return TRUE; |
| 2666 | } |
| 2667 | |
| 2668 | if (! sunos_hash_table (info)->dynamic_sections_needed) |
| 2669 | return TRUE; |
| 2670 | if (! info->shared) |
| 2671 | { |
| 2672 | if (h == NULL |
| 2673 | || h->dynindx == -1 |
| 2674 | || h->root.root.type != bfd_link_hash_undefined |
| 2675 | || (h->flags & SUNOS_DEF_REGULAR) != 0 |
| 2676 | || (h->flags & SUNOS_DEF_DYNAMIC) == 0 |
| 2677 | || (h->root.root.u.undef.abfd->flags & DYNAMIC) == 0) |
| 2678 | return TRUE; |
| 2679 | } |
| 2680 | else |
| 2681 | { |
| 2682 | if (h != NULL |
| 2683 | && (h->dynindx == -1 |
| 2684 | || jmptbl |
| 2685 | || strcmp (h->root.root.root.string, |
| 2686 | "__GLOBAL_OFFSET_TABLE_") == 0)) |
| 2687 | return TRUE; |
| 2688 | } |
| 2689 | |
| 2690 | /* It looks like this is a reloc we are supposed to copy. */ |
| 2691 | |
| 2692 | s = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 2693 | BFD_ASSERT (s != NULL); |
| 2694 | BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) < s->size); |
| 2695 | |
| 2696 | p = s->contents + s->reloc_count * obj_reloc_entry_size (dynobj); |
| 2697 | |
| 2698 | /* Copy the reloc over. */ |
| 2699 | memcpy (p, reloc, obj_reloc_entry_size (dynobj)); |
| 2700 | |
| 2701 | if (h != NULL) |
| 2702 | indx = h->dynindx; |
| 2703 | else |
| 2704 | indx = 0; |
| 2705 | |
| 2706 | /* Adjust the address and symbol index. */ |
| 2707 | if (obj_reloc_entry_size (dynobj) == RELOC_STD_SIZE) |
| 2708 | { |
| 2709 | struct reloc_std_external *srel; |
| 2710 | |
| 2711 | srel = (struct reloc_std_external *) p; |
| 2712 | PUT_WORD (dynobj, |
| 2713 | (GET_WORD (dynobj, srel->r_address) |
| 2714 | + input_section->output_section->vma |
| 2715 | + input_section->output_offset), |
| 2716 | srel->r_address); |
| 2717 | if (bfd_header_big_endian (dynobj)) |
| 2718 | { |
| 2719 | srel->r_index[0] = (bfd_byte) (indx >> 16); |
| 2720 | srel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2721 | srel->r_index[2] = (bfd_byte)indx; |
| 2722 | } |
| 2723 | else |
| 2724 | { |
| 2725 | srel->r_index[2] = (bfd_byte) (indx >> 16); |
| 2726 | srel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2727 | srel->r_index[0] = (bfd_byte)indx; |
| 2728 | } |
| 2729 | /* FIXME: We may have to change the addend for a PC relative |
| 2730 | reloc. */ |
| 2731 | } |
| 2732 | else |
| 2733 | { |
| 2734 | struct reloc_ext_external *erel; |
| 2735 | |
| 2736 | erel = (struct reloc_ext_external *) p; |
| 2737 | PUT_WORD (dynobj, |
| 2738 | (GET_WORD (dynobj, erel->r_address) |
| 2739 | + input_section->output_section->vma |
| 2740 | + input_section->output_offset), |
| 2741 | erel->r_address); |
| 2742 | if (bfd_header_big_endian (dynobj)) |
| 2743 | { |
| 2744 | erel->r_index[0] = (bfd_byte) (indx >> 16); |
| 2745 | erel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2746 | erel->r_index[2] = (bfd_byte)indx; |
| 2747 | } |
| 2748 | else |
| 2749 | { |
| 2750 | erel->r_index[2] = (bfd_byte) (indx >> 16); |
| 2751 | erel->r_index[1] = (bfd_byte) (indx >> 8); |
| 2752 | erel->r_index[0] = (bfd_byte)indx; |
| 2753 | } |
| 2754 | if (pcrel && h != NULL) |
| 2755 | { |
| 2756 | /* Adjust the addend for the change in address. */ |
| 2757 | PUT_WORD (dynobj, |
| 2758 | (GET_WORD (dynobj, erel->r_addend) |
| 2759 | - (input_section->output_section->vma |
| 2760 | + input_section->output_offset |
| 2761 | - input_section->vma)), |
| 2762 | erel->r_addend); |
| 2763 | } |
| 2764 | } |
| 2765 | |
| 2766 | ++s->reloc_count; |
| 2767 | |
| 2768 | if (h != NULL) |
| 2769 | *skip = TRUE; |
| 2770 | |
| 2771 | return TRUE; |
| 2772 | } |
| 2773 | |
| 2774 | /* Finish up the dynamic linking information. */ |
| 2775 | |
| 2776 | static bfd_boolean |
| 2777 | sunos_finish_dynamic_link (abfd, info) |
| 2778 | bfd *abfd; |
| 2779 | struct bfd_link_info *info; |
| 2780 | { |
| 2781 | bfd *dynobj; |
| 2782 | asection *o; |
| 2783 | asection *s; |
| 2784 | asection *sdyn; |
| 2785 | |
| 2786 | if (! sunos_hash_table (info)->dynamic_sections_needed |
| 2787 | && ! sunos_hash_table (info)->got_needed) |
| 2788 | return TRUE; |
| 2789 | |
| 2790 | dynobj = sunos_hash_table (info)->dynobj; |
| 2791 | |
| 2792 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 2793 | BFD_ASSERT (sdyn != NULL); |
| 2794 | |
| 2795 | /* Finish up the .need section. The linker emulation code filled it |
| 2796 | in, but with offsets from the start of the section instead of |
| 2797 | real addresses. Now that we know the section location, we can |
| 2798 | fill in the final values. */ |
| 2799 | s = bfd_get_section_by_name (dynobj, ".need"); |
| 2800 | if (s != NULL && s->size != 0) |
| 2801 | { |
| 2802 | file_ptr filepos; |
| 2803 | bfd_byte *p; |
| 2804 | |
| 2805 | filepos = s->output_section->filepos + s->output_offset; |
| 2806 | p = s->contents; |
| 2807 | while (1) |
| 2808 | { |
| 2809 | bfd_vma val; |
| 2810 | |
| 2811 | PUT_WORD (dynobj, GET_WORD (dynobj, p) + filepos, p); |
| 2812 | val = GET_WORD (dynobj, p + 12); |
| 2813 | if (val == 0) |
| 2814 | break; |
| 2815 | PUT_WORD (dynobj, val + filepos, p + 12); |
| 2816 | p += 16; |
| 2817 | } |
| 2818 | } |
| 2819 | |
| 2820 | /* The first entry in the .got section is the address of the |
| 2821 | dynamic information, unless this is a shared library. */ |
| 2822 | s = bfd_get_section_by_name (dynobj, ".got"); |
| 2823 | BFD_ASSERT (s != NULL); |
| 2824 | if (info->shared || sdyn->size == 0) |
| 2825 | PUT_WORD (dynobj, 0, s->contents); |
| 2826 | else |
| 2827 | PUT_WORD (dynobj, sdyn->output_section->vma + sdyn->output_offset, |
| 2828 | s->contents); |
| 2829 | |
| 2830 | for (o = dynobj->sections; o != NULL; o = o->next) |
| 2831 | { |
| 2832 | if ((o->flags & SEC_HAS_CONTENTS) != 0 |
| 2833 | && o->contents != NULL) |
| 2834 | { |
| 2835 | BFD_ASSERT (o->output_section != NULL |
| 2836 | && o->output_section->owner == abfd); |
| 2837 | if (! bfd_set_section_contents (abfd, o->output_section, |
| 2838 | o->contents, |
| 2839 | (file_ptr) o->output_offset, |
| 2840 | o->size)) |
| 2841 | return FALSE; |
| 2842 | } |
| 2843 | } |
| 2844 | |
| 2845 | if (sdyn->size > 0) |
| 2846 | { |
| 2847 | struct external_sun4_dynamic esd; |
| 2848 | struct external_sun4_dynamic_link esdl; |
| 2849 | file_ptr pos; |
| 2850 | |
| 2851 | /* Finish up the dynamic link information. */ |
| 2852 | PUT_WORD (dynobj, (bfd_vma) 3, esd.ld_version); |
| 2853 | PUT_WORD (dynobj, |
| 2854 | sdyn->output_section->vma + sdyn->output_offset + sizeof esd, |
| 2855 | esd.ldd); |
| 2856 | PUT_WORD (dynobj, |
| 2857 | (sdyn->output_section->vma |
| 2858 | + sdyn->output_offset |
| 2859 | + sizeof esd |
| 2860 | + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE), |
| 2861 | esd.ld); |
| 2862 | |
| 2863 | if (! bfd_set_section_contents (abfd, sdyn->output_section, &esd, |
| 2864 | (file_ptr) sdyn->output_offset, |
| 2865 | (bfd_size_type) sizeof esd)) |
| 2866 | return FALSE; |
| 2867 | |
| 2868 | PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_loaded); |
| 2869 | |
| 2870 | s = bfd_get_section_by_name (dynobj, ".need"); |
| 2871 | if (s == NULL || s->size == 0) |
| 2872 | PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_need); |
| 2873 | else |
| 2874 | PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| 2875 | esdl.ld_need); |
| 2876 | |
| 2877 | s = bfd_get_section_by_name (dynobj, ".rules"); |
| 2878 | if (s == NULL || s->size == 0) |
| 2879 | PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_rules); |
| 2880 | else |
| 2881 | PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| 2882 | esdl.ld_rules); |
| 2883 | |
| 2884 | s = bfd_get_section_by_name (dynobj, ".got"); |
| 2885 | BFD_ASSERT (s != NULL); |
| 2886 | PUT_WORD (dynobj, s->output_section->vma + s->output_offset, |
| 2887 | esdl.ld_got); |
| 2888 | |
| 2889 | s = bfd_get_section_by_name (dynobj, ".plt"); |
| 2890 | BFD_ASSERT (s != NULL); |
| 2891 | PUT_WORD (dynobj, s->output_section->vma + s->output_offset, |
| 2892 | esdl.ld_plt); |
| 2893 | PUT_WORD (dynobj, s->size, esdl.ld_plt_sz); |
| 2894 | |
| 2895 | s = bfd_get_section_by_name (dynobj, ".dynrel"); |
| 2896 | BFD_ASSERT (s != NULL); |
| 2897 | BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) |
| 2898 | == s->size); |
| 2899 | PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| 2900 | esdl.ld_rel); |
| 2901 | |
| 2902 | s = bfd_get_section_by_name (dynobj, ".hash"); |
| 2903 | BFD_ASSERT (s != NULL); |
| 2904 | PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| 2905 | esdl.ld_hash); |
| 2906 | |
| 2907 | s = bfd_get_section_by_name (dynobj, ".dynsym"); |
| 2908 | BFD_ASSERT (s != NULL); |
| 2909 | PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| 2910 | esdl.ld_stab); |
| 2911 | |
| 2912 | PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_stab_hash); |
| 2913 | |
| 2914 | PUT_WORD (dynobj, (bfd_vma) sunos_hash_table (info)->bucketcount, |
| 2915 | esdl.ld_buckets); |
| 2916 | |
| 2917 | s = bfd_get_section_by_name (dynobj, ".dynstr"); |
| 2918 | BFD_ASSERT (s != NULL); |
| 2919 | PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, |
| 2920 | esdl.ld_symbols); |
| 2921 | PUT_WORD (dynobj, s->size, esdl.ld_symb_size); |
| 2922 | |
| 2923 | /* The size of the text area is the size of the .text section |
| 2924 | rounded up to a page boundary. FIXME: Should the page size be |
| 2925 | conditional on something? */ |
| 2926 | PUT_WORD (dynobj, |
| 2927 | BFD_ALIGN (obj_textsec (abfd)->size, 0x2000), |
| 2928 | esdl.ld_text); |
| 2929 | |
| 2930 | pos = sdyn->output_offset; |
| 2931 | pos += sizeof esd + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE; |
| 2932 | if (! bfd_set_section_contents (abfd, sdyn->output_section, &esdl, |
| 2933 | pos, (bfd_size_type) sizeof esdl)) |
| 2934 | return FALSE; |
| 2935 | |
| 2936 | abfd->flags |= DYNAMIC; |
| 2937 | } |
| 2938 | |
| 2939 | return TRUE; |
| 2940 | } |