1 /* 32-bit ELF support for S+core. 2 Copyright (C) 2006-2014 Free Software Foundation, Inc. 3 Contributed by 4 Brain.lin (brain.lin (at) sunplusct.com) 5 Mei Ligang (ligang (at) sunnorth.com.cn) 6 Pei-Lin Tsai (pltsai (at) sunplus.com) 7 8 This file is part of BFD, the Binary File Descriptor library. 9 10 This program is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 3 of the License, or 13 (at your option) any later version. 14 15 This program is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with this program; if not, write to the Free Software 22 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 23 MA 02110-1301, USA. */ 24 25 #include "sysdep.h" 26 #include "bfd.h" 27 #include "libbfd.h" 28 #include "libiberty.h" 29 #include "elf-bfd.h" 30 #include "elf/score.h" 31 #include "elf/common.h" 32 #include "elf/internal.h" 33 #include "hashtab.h" 34 #include "elf32-score.h" 35 36 37 int score3 = 0; 38 int score7 = 1; 39 40 /* The SCORE ELF linker needs additional information for each symbol in 41 the global hash table. */ 42 struct score_elf_link_hash_entry 43 { 44 struct elf_link_hash_entry root; 45 46 /* Number of R_SCORE_ABS32, R_SCORE_REL32 relocs against this symbol. */ 47 unsigned int possibly_dynamic_relocs; 48 49 /* If the R_SCORE_ABS32, R_SCORE_REL32 reloc is against a readonly section. */ 50 bfd_boolean readonly_reloc; 51 52 /* We must not create a stub for a symbol that has relocations related to 53 taking the function's address, i.e. any but R_SCORE_CALL15 ones. */ 54 bfd_boolean no_fn_stub; 55 56 /* Are we forced local? This will only be set if we have converted 57 the initial global GOT entry to a local GOT entry. */ 58 bfd_boolean forced_local; 59 }; 60 61 /* Traverse a score ELF linker hash table. */ 62 #define score_elf_link_hash_traverse(table, func, info) \ 63 (elf_link_hash_traverse \ 64 ((table), \ 65 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ 66 (info))) 67 68 /* This structure is used to hold .got entries while estimating got sizes. */ 69 struct score_got_entry 70 { 71 /* The input bfd in which the symbol is defined. */ 72 bfd *abfd; 73 /* The index of the symbol, as stored in the relocation r_info, if 74 we have a local symbol; -1 otherwise. */ 75 long symndx; 76 union 77 { 78 /* If abfd == NULL, an address that must be stored in the got. */ 79 bfd_vma address; 80 /* If abfd != NULL && symndx != -1, the addend of the relocation 81 that should be added to the symbol value. */ 82 bfd_vma addend; 83 /* If abfd != NULL && symndx == -1, the hash table entry 84 corresponding to a global symbol in the got (or, local, if 85 h->forced_local). */ 86 struct score_elf_link_hash_entry *h; 87 } d; 88 89 /* The offset from the beginning of the .got section to the entry 90 corresponding to this symbol+addend. If it's a global symbol 91 whose offset is yet to be decided, it's going to be -1. */ 92 long gotidx; 93 }; 94 95 /* This structure is passed to score_elf_sort_hash_table_f when sorting 96 the dynamic symbols. */ 97 98 struct score_elf_hash_sort_data 99 { 100 /* The symbol in the global GOT with the lowest dynamic symbol table index. */ 101 struct elf_link_hash_entry *low; 102 /* The least dynamic symbol table index corresponding to a symbol with a GOT entry. */ 103 long min_got_dynindx; 104 /* The greatest dynamic symbol table index corresponding to a symbol 105 with a GOT entry that is not referenced (e.g., a dynamic symbol 106 with dynamic relocations pointing to it from non-primary GOTs). */ 107 long max_unref_got_dynindx; 108 /* The greatest dynamic symbol table index not corresponding to a 109 symbol without a GOT entry. */ 110 long max_non_got_dynindx; 111 }; 112 113 struct score_got_info 114 { 115 /* The global symbol in the GOT with the lowest index in the dynamic 116 symbol table. */ 117 struct elf_link_hash_entry *global_gotsym; 118 /* The number of global .got entries. */ 119 unsigned int global_gotno; 120 /* The number of local .got entries. */ 121 unsigned int local_gotno; 122 /* The number of local .got entries we have used. */ 123 unsigned int assigned_gotno; 124 /* A hash table holding members of the got. */ 125 struct htab *got_entries; 126 /* In multi-got links, a pointer to the next got (err, rather, most 127 of the time, it points to the previous got). */ 128 struct score_got_info *next; 129 }; 130 131 /* A structure used to count GOT entries, for GOT entry or ELF symbol table traversal. */ 132 struct _score_elf_section_data 133 { 134 struct bfd_elf_section_data elf; 135 union 136 { 137 struct score_got_info *got_info; 138 bfd_byte *tdata; 139 } 140 u; 141 }; 142 143 #define score_elf_section_data(sec) \ 144 ((struct _score_elf_section_data *) elf_section_data (sec)) 145 146 /* The size of a symbol-table entry. */ 147 #define SCORE_ELF_SYM_SIZE(abfd) \ 148 (get_elf_backend_data (abfd)->s->sizeof_sym) 149 150 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value 151 from smaller values. Start with zero, widen, *then* decrement. */ 152 #define MINUS_ONE (((bfd_vma)0) - 1) 153 #define MINUS_TWO (((bfd_vma)0) - 2) 154 155 #define PDR_SIZE 32 156 157 158 /* The number of local .got entries we reserve. */ 159 #define SCORE_RESERVED_GOTNO (2) 160 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" 161 162 /* The offset of $gp from the beginning of the .got section. */ 163 #define ELF_SCORE_GP_OFFSET(abfd) (0x3ff0) 164 /* The maximum size of the GOT for it to be addressable using 15-bit offsets from $gp. */ 165 #define SCORE_ELF_GOT_MAX_SIZE(abfd) (ELF_SCORE_GP_OFFSET(abfd) + 0x3fff) 166 167 #define SCORE_ELF_STUB_SECTION_NAME (".SCORE.stub") 168 #define SCORE_FUNCTION_STUB_SIZE (16) 169 170 #define STUB_LW 0xc3bcc010 /* lw r29, [r28, -0x3ff0] */ 171 #define STUB_MOVE 0x8363bc56 /* mv r27, r3 */ 172 #define STUB_LI16 0x87548000 /* ori r26, .dynsym_index */ 173 #define STUB_BRL 0x801dbc09 /* brl r29 */ 174 175 #define SCORE_ELF_GOT_SIZE(abfd) \ 176 (get_elf_backend_data (abfd)->s->arch_size / 8) 177 178 #define SCORE_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \ 179 (_bfd_elf_add_dynamic_entry (info, (bfd_vma) tag, (bfd_vma) val)) 180 181 /* The size of an external dynamic table entry. */ 182 #define SCORE_ELF_DYN_SIZE(abfd) \ 183 (get_elf_backend_data (abfd)->s->sizeof_dyn) 184 185 /* The size of an external REL relocation. */ 186 #define SCORE_ELF_REL_SIZE(abfd) \ 187 (get_elf_backend_data (abfd)->s->sizeof_rel) 188 189 /* The default alignment for sections, as a power of two. */ 190 #define SCORE_ELF_LOG_FILE_ALIGN(abfd)\ 191 (get_elf_backend_data (abfd)->s->log_file_align) 192 193 static bfd_byte *hi16_rel_addr; 194 195 /* This will be used when we sort the dynamic relocation records. */ 196 static bfd *reldyn_sorting_bfd; 197 198 /* SCORE ELF uses two common sections. One is the usual one, and the 199 other is for small objects. All the small objects are kept 200 together, and then referenced via the gp pointer, which yields 201 faster assembler code. This is what we use for the small common 202 section. This approach is copied from ecoff.c. */ 203 static asection score_elf_scom_section; 204 static asymbol score_elf_scom_symbol; 205 static asymbol *score_elf_scom_symbol_ptr; 206 207 static bfd_vma 208 score_bfd_get_16 (bfd *abfd, const void *data) 209 { 210 return bfd_get_16 (abfd, data); 211 } 212 213 static bfd_vma 214 score3_bfd_getl32 (const void *p) 215 { 216 const bfd_byte *addr = p; 217 unsigned long v; 218 219 v = (unsigned long) addr[2]; 220 v |= (unsigned long) addr[3] << 8; 221 v |= (unsigned long) addr[0] << 16; 222 v |= (unsigned long) addr[1] << 24; 223 return v; 224 } 225 226 static bfd_vma 227 score3_bfd_getl48 (const void *p) 228 { 229 const bfd_byte *addr = p; 230 unsigned long long v; 231 232 v = (unsigned long long) addr[4]; 233 v |= (unsigned long long) addr[5] << 8; 234 v |= (unsigned long long) addr[2] << 16; 235 v |= (unsigned long long) addr[3] << 24; 236 v |= (unsigned long long) addr[0] << 32; 237 v |= (unsigned long long) addr[1] << 40; 238 return v; 239 } 240 241 static bfd_vma 242 score_bfd_get_32 (bfd *abfd, const void *data) 243 { 244 if (/* score3 && */ abfd->xvec->byteorder == BFD_ENDIAN_LITTLE) 245 return score3_bfd_getl32 (data); 246 else 247 return bfd_get_32 (abfd, data); 248 } 249 250 static bfd_vma 251 score_bfd_get_48 (bfd *abfd, const void *p) 252 { 253 if (/* score3 && */ abfd->xvec->byteorder == BFD_ENDIAN_LITTLE) 254 return score3_bfd_getl48 (p); 255 else 256 return bfd_get_bits (p, 48, 1); 257 } 258 259 static void 260 score_bfd_put_16 (bfd *abfd, bfd_vma addr, void *data) 261 { 262 return bfd_put_16 (abfd, addr, data); 263 } 264 265 static void 266 score3_bfd_putl32 (bfd_vma data, void *p) 267 { 268 bfd_byte *addr = p; 269 addr[0] = (data >> 16) & 0xff; 270 addr[1] = (data >> 24) & 0xff; 271 addr[2] = data & 0xff; 272 addr[3] = (data >> 8) & 0xff; 273 } 274 275 static void 276 score3_bfd_putl48 (bfd_vma data, void *p) 277 { 278 bfd_byte *addr = p; 279 addr[0] = (data >> 32) & 0xff; 280 addr[1] = (data >> 40) & 0xff; 281 addr[2] = (data >> 16) & 0xff; 282 addr[3] = (data >> 24) & 0xff; 283 addr[4] = data & 0xff; 284 addr[5] = (data >> 8) & 0xff; 285 } 286 287 static void 288 score_bfd_put_32 (bfd *abfd, bfd_vma addr, void *data) 289 { 290 if (/* score3 && */ abfd->xvec->byteorder == BFD_ENDIAN_LITTLE) 291 return score3_bfd_putl32 (addr, data); 292 else 293 return bfd_put_32 (abfd, addr, data); 294 } 295 296 static void 297 score_bfd_put_48 (bfd *abfd, bfd_vma val, void *p) 298 { 299 if (/* score3 && */ abfd->xvec->byteorder == BFD_ENDIAN_LITTLE) 300 return score3_bfd_putl48 (val, p); 301 else 302 return bfd_put_bits (val, p, 48, 1); 303 } 304 305 static bfd_reloc_status_type 306 score_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED, 307 arelent *reloc_entry, 308 asymbol *symbol ATTRIBUTE_UNUSED, 309 void * data, 310 asection *input_section ATTRIBUTE_UNUSED, 311 bfd *output_bfd ATTRIBUTE_UNUSED, 312 char **error_message ATTRIBUTE_UNUSED) 313 { 314 hi16_rel_addr = (bfd_byte *) data + reloc_entry->address; 315 return bfd_reloc_ok; 316 } 317 318 static bfd_reloc_status_type 319 score_elf_lo16_reloc (bfd *abfd, 320 arelent *reloc_entry, 321 asymbol *symbol ATTRIBUTE_UNUSED, 322 void * data, 323 asection *input_section, 324 bfd *output_bfd ATTRIBUTE_UNUSED, 325 char **error_message ATTRIBUTE_UNUSED) 326 { 327 bfd_vma addend = 0, offset = 0; 328 unsigned long val; 329 unsigned long hi16_offset, hi16_value, uvalue; 330 331 hi16_value = score_bfd_get_32 (abfd, hi16_rel_addr); 332 hi16_offset = ((((hi16_value >> 16) & 0x3) << 15) | (hi16_value & 0x7fff)) >> 1; 333 addend = score_bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 334 offset = ((((addend >> 16) & 0x3) << 15) | (addend & 0x7fff)) >> 1; 335 val = reloc_entry->addend; 336 if (reloc_entry->address > input_section->size) 337 return bfd_reloc_outofrange; 338 uvalue = ((hi16_offset << 16) | (offset & 0xffff)) + val; 339 hi16_offset = (uvalue >> 16) << 1; 340 hi16_value = (hi16_value & ~0x37fff) | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000); 341 score_bfd_put_32 (abfd, hi16_value, hi16_rel_addr); 342 offset = (uvalue & 0xffff) << 1; 343 addend = (addend & ~0x37fff) | (offset & 0x7fff) | ((offset << 1) & 0x30000); 344 score_bfd_put_32 (abfd, addend, (bfd_byte *) data + reloc_entry->address); 345 return bfd_reloc_ok; 346 } 347 348 /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a 349 dangerous relocation. */ 350 351 static bfd_boolean 352 score_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp) 353 { 354 unsigned int count; 355 asymbol **sym; 356 unsigned int i; 357 358 /* If we've already figured out what GP will be, just return it. */ 359 *pgp = _bfd_get_gp_value (output_bfd); 360 if (*pgp) 361 return TRUE; 362 363 count = bfd_get_symcount (output_bfd); 364 sym = bfd_get_outsymbols (output_bfd); 365 366 /* The linker script will have created a symbol named `_gp' with the 367 appropriate value. */ 368 if (sym == NULL) 369 i = count; 370 else 371 { 372 for (i = 0; i < count; i++, sym++) 373 { 374 const char *name; 375 376 name = bfd_asymbol_name (*sym); 377 if (*name == '_' && strcmp (name, "_gp") == 0) 378 { 379 *pgp = bfd_asymbol_value (*sym); 380 _bfd_set_gp_value (output_bfd, *pgp); 381 break; 382 } 383 } 384 } 385 386 if (i >= count) 387 { 388 /* Only get the error once. */ 389 *pgp = 4; 390 _bfd_set_gp_value (output_bfd, *pgp); 391 return FALSE; 392 } 393 394 return TRUE; 395 } 396 397 /* We have to figure out the gp value, so that we can adjust the 398 symbol value correctly. We look up the symbol _gp in the output 399 BFD. If we can't find it, we're stuck. We cache it in the ELF 400 target data. We don't need to adjust the symbol value for an 401 external symbol if we are producing relocatable output. */ 402 static bfd_reloc_status_type 403 score_elf_final_gp (bfd *output_bfd, 404 asymbol *symbol, 405 bfd_boolean relocatable, 406 char **error_message, 407 bfd_vma *pgp) 408 { 409 if (bfd_is_und_section (symbol->section) 410 && ! relocatable) 411 { 412 *pgp = 0; 413 return bfd_reloc_undefined; 414 } 415 416 *pgp = _bfd_get_gp_value (output_bfd); 417 if (*pgp == 0 418 && (! relocatable 419 || (symbol->flags & BSF_SECTION_SYM) != 0)) 420 { 421 if (relocatable) 422 { 423 /* Make up a value. */ 424 *pgp = symbol->section->output_section->vma + 0x4000; 425 _bfd_set_gp_value (output_bfd, *pgp); 426 } 427 else if (!score_elf_assign_gp (output_bfd, pgp)) 428 { 429 *error_message = 430 (char *) _("GP relative relocation when _gp not defined"); 431 return bfd_reloc_dangerous; 432 } 433 } 434 435 return bfd_reloc_ok; 436 } 437 438 static bfd_reloc_status_type 439 score_elf_gprel15_with_gp (bfd *abfd, 440 asymbol *symbol, 441 arelent *reloc_entry, 442 asection *input_section, 443 bfd_boolean relocateable, 444 void * data, 445 bfd_vma gp ATTRIBUTE_UNUSED) 446 { 447 bfd_vma relocation; 448 unsigned long insn; 449 450 if (bfd_is_com_section (symbol->section)) 451 relocation = 0; 452 else 453 relocation = symbol->value; 454 455 relocation += symbol->section->output_section->vma; 456 relocation += symbol->section->output_offset; 457 if (reloc_entry->address > input_section->size) 458 return bfd_reloc_outofrange; 459 460 insn = score_bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 461 if (((reloc_entry->addend & 0xffffc000) != 0) 462 && ((reloc_entry->addend & 0xffffc000) != 0xffffc000)) 463 return bfd_reloc_overflow; 464 465 insn = (insn & ~0x7fff) | (reloc_entry->addend & 0x7fff); 466 score_bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); 467 if (relocateable) 468 reloc_entry->address += input_section->output_offset; 469 470 return bfd_reloc_ok; 471 } 472 473 static bfd_reloc_status_type 474 gprel32_with_gp (bfd *abfd, asymbol *symbol, arelent *reloc_entry, 475 asection *input_section, bfd_boolean relocatable, 476 void *data, bfd_vma gp) 477 { 478 bfd_vma relocation; 479 bfd_vma val; 480 481 if (bfd_is_com_section (symbol->section)) 482 relocation = 0; 483 else 484 relocation = symbol->value; 485 486 relocation += symbol->section->output_section->vma; 487 relocation += symbol->section->output_offset; 488 489 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) 490 return bfd_reloc_outofrange; 491 492 /* Set val to the offset into the section or symbol. */ 493 val = reloc_entry->addend; 494 495 if (reloc_entry->howto->partial_inplace) 496 val += score_bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 497 498 /* Adjust val for the final section location and GP value. If we 499 are producing relocatable output, we don't want to do this for 500 an external symbol. */ 501 if (! relocatable 502 || (symbol->flags & BSF_SECTION_SYM) != 0) 503 val += relocation - gp; 504 505 if (reloc_entry->howto->partial_inplace) 506 score_bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address); 507 else 508 reloc_entry->addend = val; 509 510 if (relocatable) 511 reloc_entry->address += input_section->output_offset; 512 513 return bfd_reloc_ok; 514 } 515 516 static bfd_reloc_status_type 517 score_elf_gprel15_reloc (bfd *abfd, 518 arelent *reloc_entry, 519 asymbol *symbol, 520 void * data, 521 asection *input_section, 522 bfd *output_bfd, 523 char **error_message) 524 { 525 bfd_boolean relocateable; 526 bfd_reloc_status_type ret; 527 bfd_vma gp; 528 529 if (output_bfd != NULL 530 && (symbol->flags & BSF_SECTION_SYM) == 0 && reloc_entry->addend == 0) 531 { 532 reloc_entry->address += input_section->output_offset; 533 return bfd_reloc_ok; 534 } 535 if (output_bfd != NULL) 536 relocateable = TRUE; 537 else 538 { 539 relocateable = FALSE; 540 output_bfd = symbol->section->output_section->owner; 541 } 542 543 ret = score_elf_final_gp (output_bfd, symbol, relocateable, error_message, &gp); 544 if (ret != bfd_reloc_ok) 545 return ret; 546 547 return score_elf_gprel15_with_gp (abfd, symbol, reloc_entry, 548 input_section, relocateable, data, gp); 549 } 550 551 /* Do a R_SCORE_GPREL32 relocation. This is a 32 bit value which must 552 become the offset from the gp register. */ 553 554 static bfd_reloc_status_type 555 score_elf_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 556 void *data, asection *input_section, bfd *output_bfd, 557 char **error_message) 558 { 559 bfd_boolean relocatable; 560 bfd_reloc_status_type ret; 561 bfd_vma gp; 562 563 /* R_SCORE_GPREL32 relocations are defined for local symbols only. */ 564 if (output_bfd != NULL 565 && (symbol->flags & BSF_SECTION_SYM) == 0 566 && (symbol->flags & BSF_LOCAL) != 0) 567 { 568 *error_message = (char *) 569 _("32bits gp relative relocation occurs for an external symbol"); 570 return bfd_reloc_outofrange; 571 } 572 573 if (output_bfd != NULL) 574 relocatable = TRUE; 575 else 576 { 577 relocatable = FALSE; 578 output_bfd = symbol->section->output_section->owner; 579 } 580 581 ret = score_elf_final_gp (output_bfd, symbol, relocatable, error_message, &gp); 582 if (ret != bfd_reloc_ok) 583 return ret; 584 585 gp = 0; 586 return gprel32_with_gp (abfd, symbol, reloc_entry, input_section, 587 relocatable, data, gp); 588 } 589 590 /* A howto special_function for R_SCORE_GOT15 relocations. This is just 591 like any other 16-bit relocation when applied to global symbols, but is 592 treated in the same as R_SCORE_HI16 when applied to local symbols. */ 593 static bfd_reloc_status_type 594 score_elf_got15_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 595 void *data, asection *input_section, 596 bfd *output_bfd, char **error_message) 597 { 598 if ((symbol->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 599 || bfd_is_und_section (bfd_get_section (symbol)) 600 || bfd_is_com_section (bfd_get_section (symbol))) 601 /* The relocation is against a global symbol. */ 602 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, 603 input_section, output_bfd, 604 error_message); 605 606 return score_elf_hi16_reloc (abfd, reloc_entry, symbol, data, 607 input_section, output_bfd, error_message); 608 } 609 610 static bfd_reloc_status_type 611 score_elf_got_lo16_reloc (bfd *abfd, 612 arelent *reloc_entry, 613 asymbol *symbol ATTRIBUTE_UNUSED, 614 void * data, 615 asection *input_section, 616 bfd *output_bfd ATTRIBUTE_UNUSED, 617 char **error_message ATTRIBUTE_UNUSED) 618 { 619 bfd_vma addend = 0, offset = 0; 620 signed long val; 621 signed long hi16_offset, hi16_value, uvalue; 622 623 hi16_value = score_bfd_get_32 (abfd, hi16_rel_addr); 624 hi16_offset = ((((hi16_value >> 16) & 0x3) << 15) | (hi16_value & 0x7fff)) >> 1; 625 addend = score_bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 626 offset = ((((addend >> 16) & 0x3) << 15) | (addend & 0x7fff)) >> 1; 627 val = reloc_entry->addend; 628 if (reloc_entry->address > input_section->size) 629 return bfd_reloc_outofrange; 630 uvalue = ((hi16_offset << 16) | (offset & 0xffff)) + val; 631 if ((uvalue > -0x8000) && (uvalue < 0x7fff)) 632 hi16_offset = 0; 633 else 634 hi16_offset = (uvalue >> 16) & 0x7fff; 635 hi16_value = (hi16_value & ~0x37fff) | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000); 636 score_bfd_put_32 (abfd, hi16_value, hi16_rel_addr); 637 offset = (uvalue & 0xffff) << 1; 638 addend = (addend & ~0x37fff) | (offset & 0x7fff) | ((offset << 1) & 0x30000); 639 score_bfd_put_32 (abfd, addend, (bfd_byte *) data + reloc_entry->address); 640 return bfd_reloc_ok; 641 } 642 643 static reloc_howto_type elf32_score_howto_table[] = 644 { 645 /* No relocation. */ 646 HOWTO (R_SCORE_NONE, /* type */ 647 0, /* rightshift */ 648 0, /* size (0 = byte, 1 = short, 2 = long) */ 649 0, /* bitsize */ 650 FALSE, /* pc_relative */ 651 0, /* bitpos */ 652 complain_overflow_dont,/* complain_on_overflow */ 653 bfd_elf_generic_reloc, /* special_function */ 654 "R_SCORE_NONE", /* name */ 655 FALSE, /* partial_inplace */ 656 0, /* src_mask */ 657 0, /* dst_mask */ 658 FALSE), /* pcrel_offset */ 659 660 /* R_SCORE_HI16 */ 661 HOWTO (R_SCORE_HI16, /* type */ 662 0, /* rightshift */ 663 2, /* size (0 = byte, 1 = short, 2 = long) */ 664 16, /* bitsize */ 665 FALSE, /* pc_relative */ 666 1, /* bitpos */ 667 complain_overflow_dont,/* complain_on_overflow */ 668 score_elf_hi16_reloc, /* special_function */ 669 "R_SCORE_HI16", /* name */ 670 TRUE, /* partial_inplace */ 671 0x37fff, /* src_mask */ 672 0x37fff, /* dst_mask */ 673 FALSE), /* pcrel_offset */ 674 675 /* R_SCORE_LO16 */ 676 HOWTO (R_SCORE_LO16, /* type */ 677 0, /* rightshift */ 678 2, /* size (0 = byte, 1 = short, 2 = long) */ 679 16, /* bitsize */ 680 FALSE, /* pc_relative */ 681 1, /* bitpos */ 682 complain_overflow_dont,/* complain_on_overflow */ 683 score_elf_lo16_reloc, /* special_function */ 684 "R_SCORE_LO16", /* name */ 685 TRUE, /* partial_inplace */ 686 0x37fff, /* src_mask */ 687 0x37fff, /* dst_mask */ 688 FALSE), /* pcrel_offset */ 689 690 /* R_SCORE_BCMP */ 691 HOWTO (R_SCORE_BCMP, /* type */ 692 1, /* rightshift */ 693 2, /* size (0 = byte, 1 = short, 2 = long) */ 694 16, /* bitsize */ 695 TRUE, /* pc_relative */ 696 1, /* bitpos */ 697 complain_overflow_dont,/* complain_on_overflow */ 698 bfd_elf_generic_reloc, /* special_function */ 699 "R_SCORE_BCMP", /* name */ 700 FALSE, /* partial_inplace */ 701 0x03e00381, /* src_mask */ 702 0x03e00381, /* dst_mask */ 703 FALSE), /* pcrel_offset */ 704 705 /*R_SCORE_24 */ 706 HOWTO (R_SCORE_24, /* type */ 707 1, /* rightshift */ 708 2, /* size (0 = byte, 1 = short, 2 = long) */ 709 24, /* bitsize */ 710 FALSE, /* pc_relative */ 711 1, /* bitpos */ 712 complain_overflow_dont,/* complain_on_overflow */ 713 bfd_elf_generic_reloc, /* special_function */ 714 "R_SCORE_24", /* name */ 715 FALSE, /* partial_inplace */ 716 0x3ff7fff, /* src_mask */ 717 0x3ff7fff, /* dst_mask */ 718 FALSE), /* pcrel_offset */ 719 720 /*R_SCORE_PC19 */ 721 HOWTO (R_SCORE_PC19, /* type */ 722 1, /* rightshift */ 723 2, /* size (0 = byte, 1 = short, 2 = long) */ 724 19, /* bitsize */ 725 TRUE, /* pc_relative */ 726 1, /* bitpos */ 727 complain_overflow_dont,/* complain_on_overflow */ 728 bfd_elf_generic_reloc, /* special_function */ 729 "R_SCORE_PC19", /* name */ 730 FALSE, /* partial_inplace */ 731 0x3ff03fe, /* src_mask */ 732 0x3ff03fe, /* dst_mask */ 733 FALSE), /* pcrel_offset */ 734 735 /*R_SCORE16_11 */ 736 HOWTO (R_SCORE16_11, /* type */ 737 1, /* rightshift */ 738 1, /* size (0 = byte, 1 = short, 2 = long) */ 739 11, /* bitsize */ 740 FALSE, /* pc_relative */ 741 1, /* bitpos */ 742 complain_overflow_dont,/* complain_on_overflow */ 743 bfd_elf_generic_reloc, /* special_function */ 744 "R_SCORE16_11", /* name */ 745 FALSE, /* partial_inplace */ 746 0x000000ffe, /* src_mask */ 747 0x000000ffe, /* dst_mask */ 748 FALSE), /* pcrel_offset */ 749 750 /* R_SCORE16_PC8 */ 751 HOWTO (R_SCORE16_PC8, /* type */ 752 1, /* rightshift */ 753 1, /* size (0 = byte, 1 = short, 2 = long) */ 754 9, /* bitsize */ 755 TRUE, /* pc_relative */ 756 0, /* bitpos */ 757 complain_overflow_dont,/* complain_on_overflow */ 758 bfd_elf_generic_reloc, /* special_function */ 759 "R_SCORE16_PC8", /* name */ 760 FALSE, /* partial_inplace */ 761 0x000001ff, /* src_mask */ 762 0x000001ff, /* dst_mask */ 763 FALSE), /* pcrel_offset */ 764 765 /* 32 bit absolute */ 766 HOWTO (R_SCORE_ABS32, /* type 8 */ 767 0, /* rightshift */ 768 2, /* size (0 = byte, 1 = short, 2 = long) */ 769 32, /* bitsize */ 770 FALSE, /* pc_relative */ 771 0, /* bitpos */ 772 complain_overflow_bitfield, /* complain_on_overflow */ 773 bfd_elf_generic_reloc, /* special_function */ 774 "R_SCORE_ABS32", /* name */ 775 FALSE, /* partial_inplace */ 776 0xffffffff, /* src_mask */ 777 0xffffffff, /* dst_mask */ 778 FALSE), /* pcrel_offset */ 779 780 /* 16 bit absolute */ 781 HOWTO (R_SCORE_ABS16, /* type 11 */ 782 0, /* rightshift */ 783 1, /* size (0 = byte, 1 = short, 2 = long) */ 784 16, /* bitsize */ 785 FALSE, /* pc_relative */ 786 0, /* bitpos */ 787 complain_overflow_bitfield, /* complain_on_overflow */ 788 bfd_elf_generic_reloc, /* special_function */ 789 "R_SCORE_ABS16", /* name */ 790 FALSE, /* partial_inplace */ 791 0x0000ffff, /* src_mask */ 792 0x0000ffff, /* dst_mask */ 793 FALSE), /* pcrel_offset */ 794 795 /* R_SCORE_DUMMY2 */ 796 HOWTO (R_SCORE_DUMMY2, /* type */ 797 0, /* rightshift */ 798 2, /* size (0 = byte, 1 = short, 2 = long) */ 799 16, /* bitsize */ 800 FALSE, /* pc_relative */ 801 0, /* bitpos */ 802 complain_overflow_dont,/* complain_on_overflow */ 803 bfd_elf_generic_reloc, /* special_function */ 804 "R_SCORE_DUMMY2", /* name */ 805 TRUE, /* partial_inplace */ 806 0x00007fff, /* src_mask */ 807 0x00007fff, /* dst_mask */ 808 FALSE), /* pcrel_offset */ 809 810 /* R_SCORE_GP15 */ 811 HOWTO (R_SCORE_GP15, /* type */ 812 0, /* rightshift */ 813 2, /* size (0 = byte, 1 = short, 2 = long) */ 814 16, /* bitsize */ 815 FALSE, /* pc_relative */ 816 0, /* bitpos */ 817 complain_overflow_dont,/* complain_on_overflow */ 818 score_elf_gprel15_reloc,/* special_function */ 819 "R_SCORE_GP15", /* name */ 820 TRUE, /* partial_inplace */ 821 0x00007fff, /* src_mask */ 822 0x00007fff, /* dst_mask */ 823 FALSE), /* pcrel_offset */ 824 825 /* GNU extension to record C++ vtable hierarchy. */ 826 HOWTO (R_SCORE_GNU_VTINHERIT, /* type */ 827 0, /* rightshift */ 828 2, /* size (0 = byte, 1 = short, 2 = long) */ 829 0, /* bitsize */ 830 FALSE, /* pc_relative */ 831 0, /* bitpos */ 832 complain_overflow_dont,/* complain_on_overflow */ 833 NULL, /* special_function */ 834 "R_SCORE_GNU_VTINHERIT", /* name */ 835 FALSE, /* partial_inplace */ 836 0, /* src_mask */ 837 0, /* dst_mask */ 838 FALSE), /* pcrel_offset */ 839 840 /* GNU extension to record C++ vtable member usage */ 841 HOWTO (R_SCORE_GNU_VTENTRY, /* type */ 842 0, /* rightshift */ 843 2, /* size (0 = byte, 1 = short, 2 = long) */ 844 0, /* bitsize */ 845 FALSE, /* pc_relative */ 846 0, /* bitpos */ 847 complain_overflow_dont,/* complain_on_overflow */ 848 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 849 "R_SCORE_GNU_VTENTRY", /* name */ 850 FALSE, /* partial_inplace */ 851 0, /* src_mask */ 852 0, /* dst_mask */ 853 FALSE), /* pcrel_offset */ 854 855 /* Reference to global offset table. */ 856 HOWTO (R_SCORE_GOT15, /* type */ 857 0, /* rightshift */ 858 2, /* size (0 = byte, 1 = short, 2 = long) */ 859 16, /* bitsize */ 860 FALSE, /* pc_relative */ 861 0, /* bitpos */ 862 complain_overflow_signed, /* complain_on_overflow */ 863 score_elf_got15_reloc, /* special_function */ 864 "R_SCORE_GOT15", /* name */ 865 TRUE, /* partial_inplace */ 866 0x00007fff, /* src_mask */ 867 0x00007fff, /* dst_mask */ 868 FALSE), /* pcrel_offset */ 869 870 /* Low 16 bits of displacement in global offset table. */ 871 HOWTO (R_SCORE_GOT_LO16, /* type */ 872 0, /* rightshift */ 873 2, /* size (0 = byte, 1 = short, 2 = long) */ 874 16, /* bitsize */ 875 FALSE, /* pc_relative */ 876 1, /* bitpos */ 877 complain_overflow_dont,/* complain_on_overflow */ 878 score_elf_got_lo16_reloc, /* special_function */ 879 "R_SCORE_GOT_LO16", /* name */ 880 TRUE, /* partial_inplace */ 881 0x37ffe, /* src_mask */ 882 0x37ffe, /* dst_mask */ 883 FALSE), /* pcrel_offset */ 884 885 /* 15 bit call through global offset table. */ 886 HOWTO (R_SCORE_CALL15, /* type */ 887 0, /* rightshift */ 888 2, /* size (0 = byte, 1 = short, 2 = long) */ 889 16, /* bitsize */ 890 FALSE, /* pc_relative */ 891 0, /* bitpos */ 892 complain_overflow_signed, /* complain_on_overflow */ 893 bfd_elf_generic_reloc, /* special_function */ 894 "R_SCORE_CALL15", /* name */ 895 TRUE, /* partial_inplace */ 896 0x0000ffff, /* src_mask */ 897 0x0000ffff, /* dst_mask */ 898 FALSE), /* pcrel_offset */ 899 900 /* 32 bit GP relative reference. */ 901 HOWTO (R_SCORE_GPREL32, /* type */ 902 0, /* rightshift */ 903 2, /* size (0 = byte, 1 = short, 2 = long) */ 904 32, /* bitsize */ 905 FALSE, /* pc_relative */ 906 0, /* bitpos */ 907 complain_overflow_dont,/* complain_on_overflow */ 908 score_elf_gprel32_reloc, /* special_function */ 909 "R_SCORE_GPREL32", /* name */ 910 TRUE, /* partial_inplace */ 911 0xffffffff, /* src_mask */ 912 0xffffffff, /* dst_mask */ 913 FALSE), /* pcrel_offset */ 914 915 /* 32 bit symbol relative relocation. */ 916 HOWTO (R_SCORE_REL32, /* type */ 917 0, /* rightshift */ 918 2, /* size (0 = byte, 1 = short, 2 = long) */ 919 32, /* bitsize */ 920 FALSE, /* pc_relative */ 921 0, /* bitpos */ 922 complain_overflow_dont,/* complain_on_overflow */ 923 bfd_elf_generic_reloc, /* special_function */ 924 "R_SCORE_REL32", /* name */ 925 TRUE, /* partial_inplace */ 926 0xffffffff, /* src_mask */ 927 0xffffffff, /* dst_mask */ 928 FALSE), /* pcrel_offset */ 929 930 /* R_SCORE_DUMMY_HI16 */ 931 HOWTO (R_SCORE_DUMMY_HI16, /* type */ 932 0, /* rightshift */ 933 2, /* size (0 = byte, 1 = short, 2 = long) */ 934 16, /* bitsize */ 935 FALSE, /* pc_relative */ 936 1, /* bitpos */ 937 complain_overflow_dont,/* complain_on_overflow */ 938 score_elf_hi16_reloc, /* special_function */ 939 "R_SCORE_DUMMY_HI16", /* name */ 940 TRUE, /* partial_inplace */ 941 0x37fff, /* src_mask */ 942 0x37fff, /* dst_mask */ 943 FALSE), /* pcrel_offset */ 944 945 /* R_SCORE_IMM30 */ 946 HOWTO (R_SCORE_IMM30, /* type */ 947 2, /* rightshift */ 948 2, /* size (0 = byte, 1 = short, 2 = long) */ 949 30, /* bitsize */ 950 FALSE, /* pc_relative */ 951 7, /* bitpos */ 952 complain_overflow_dont,/* complain_on_overflow */ 953 bfd_elf_generic_reloc, /* special_function */ 954 "R_SCORE_IMM30", /* name */ 955 FALSE, /* partial_inplace */ 956 0x7f7fff7f80LL, /* src_mask */ 957 0x7f7fff7f80LL, /* dst_mask */ 958 FALSE), /* pcrel_offset */ 959 960 /* R_SCORE_IMM32 */ 961 HOWTO (R_SCORE_IMM32, /* type */ 962 0, /* rightshift */ 963 2, /* size (0 = byte, 1 = short, 2 = long) */ 964 32, /* bitsize */ 965 FALSE, /* pc_relative */ 966 5, /* bitpos */ 967 complain_overflow_dont,/* complain_on_overflow */ 968 bfd_elf_generic_reloc, /* special_function */ 969 "R_SCORE_IMM32", /* name */ 970 FALSE, /* partial_inplace */ 971 0x7f7fff7fe0LL, /* src_mask */ 972 0x7f7fff7fe0LL, /* dst_mask */ 973 FALSE), /* pcrel_offset */ 974 }; 975 976 struct score_reloc_map 977 { 978 bfd_reloc_code_real_type bfd_reloc_val; 979 unsigned char elf_reloc_val; 980 }; 981 982 static const struct score_reloc_map elf32_score_reloc_map[] = 983 { 984 {BFD_RELOC_NONE, R_SCORE_NONE}, 985 {BFD_RELOC_HI16_S, R_SCORE_HI16}, 986 {BFD_RELOC_LO16, R_SCORE_LO16}, 987 {BFD_RELOC_SCORE_BCMP, R_SCORE_BCMP}, 988 {BFD_RELOC_SCORE_JMP, R_SCORE_24}, 989 {BFD_RELOC_SCORE_BRANCH, R_SCORE_PC19}, 990 {BFD_RELOC_SCORE16_JMP, R_SCORE16_11}, 991 {BFD_RELOC_SCORE16_BRANCH, R_SCORE16_PC8}, 992 {BFD_RELOC_32, R_SCORE_ABS32}, 993 {BFD_RELOC_16, R_SCORE_ABS16}, 994 {BFD_RELOC_SCORE_DUMMY2, R_SCORE_DUMMY2}, 995 {BFD_RELOC_SCORE_GPREL15, R_SCORE_GP15}, 996 {BFD_RELOC_VTABLE_INHERIT, R_SCORE_GNU_VTINHERIT}, 997 {BFD_RELOC_VTABLE_ENTRY, R_SCORE_GNU_VTENTRY}, 998 {BFD_RELOC_SCORE_GOT15, R_SCORE_GOT15}, 999 {BFD_RELOC_SCORE_GOT_LO16, R_SCORE_GOT_LO16}, 1000 {BFD_RELOC_SCORE_CALL15, R_SCORE_CALL15}, 1001 {BFD_RELOC_GPREL32, R_SCORE_GPREL32}, 1002 {BFD_RELOC_32_PCREL, R_SCORE_REL32}, 1003 {BFD_RELOC_SCORE_DUMMY_HI16, R_SCORE_DUMMY_HI16}, 1004 {BFD_RELOC_SCORE_IMM30, R_SCORE_IMM30}, 1005 {BFD_RELOC_SCORE_IMM32, R_SCORE_IMM32}, 1006 }; 1007 1008 /* got_entries only match if they're identical, except for gotidx, so 1009 use all fields to compute the hash, and compare the appropriate 1010 union members. */ 1011 static hashval_t 1012 score_elf_got_entry_hash (const void *entry_) 1013 { 1014 const struct score_got_entry *entry = (struct score_got_entry *)entry_; 1015 1016 return entry->symndx 1017 + (!entry->abfd ? entry->d.address : entry->abfd->id); 1018 } 1019 1020 static int 1021 score_elf_got_entry_eq (const void *entry1, const void *entry2) 1022 { 1023 const struct score_got_entry *e1 = (struct score_got_entry *)entry1; 1024 const struct score_got_entry *e2 = (struct score_got_entry *)entry2; 1025 1026 return e1->abfd == e2->abfd && e1->symndx == e2->symndx 1027 && (! e1->abfd ? e1->d.address == e2->d.address 1028 : e1->symndx >= 0 ? e1->d.addend == e2->d.addend 1029 : e1->d.h == e2->d.h); 1030 } 1031 1032 /* If H needs a GOT entry, assign it the highest available dynamic 1033 index. Otherwise, assign it the lowest available dynamic 1034 index. */ 1035 static bfd_boolean 1036 score_elf_sort_hash_table_f (struct score_elf_link_hash_entry *h, void *data) 1037 { 1038 struct score_elf_hash_sort_data *hsd = data; 1039 1040 /* Symbols without dynamic symbol table entries aren't interesting at all. */ 1041 if (h->root.dynindx == -1) 1042 return TRUE; 1043 1044 /* Global symbols that need GOT entries that are not explicitly 1045 referenced are marked with got offset 2. Those that are 1046 referenced get a 1, and those that don't need GOT entries get 1047 -1. */ 1048 if (h->root.got.offset == 2) 1049 { 1050 if (hsd->max_unref_got_dynindx == hsd->min_got_dynindx) 1051 hsd->low = (struct elf_link_hash_entry *) h; 1052 h->root.dynindx = hsd->max_unref_got_dynindx++; 1053 } 1054 else if (h->root.got.offset != 1) 1055 h->root.dynindx = hsd->max_non_got_dynindx++; 1056 else 1057 { 1058 h->root.dynindx = --hsd->min_got_dynindx; 1059 hsd->low = (struct elf_link_hash_entry *) h; 1060 } 1061 1062 return TRUE; 1063 } 1064 1065 static asection * 1066 score_elf_got_section (bfd *abfd, bfd_boolean maybe_excluded) 1067 { 1068 asection *sgot = bfd_get_linker_section (abfd, ".got"); 1069 1070 if (sgot == NULL || (! maybe_excluded && (sgot->flags & SEC_EXCLUDE) != 0)) 1071 return NULL; 1072 return sgot; 1073 } 1074 1075 /* Returns the GOT information associated with the link indicated by 1076 INFO. If SGOTP is non-NULL, it is filled in with the GOT section. */ 1077 static struct score_got_info * 1078 score_elf_got_info (bfd *abfd, asection **sgotp) 1079 { 1080 asection *sgot; 1081 struct score_got_info *g; 1082 1083 sgot = score_elf_got_section (abfd, TRUE); 1084 BFD_ASSERT (sgot != NULL); 1085 BFD_ASSERT (elf_section_data (sgot) != NULL); 1086 g = score_elf_section_data (sgot)->u.got_info; 1087 BFD_ASSERT (g != NULL); 1088 1089 if (sgotp) 1090 *sgotp = sgot; 1091 return g; 1092 } 1093 1094 /* Sort the dynamic symbol table so that symbols that need GOT entries 1095 appear towards the end. This reduces the amount of GOT space 1096 required. MAX_LOCAL is used to set the number of local symbols 1097 known to be in the dynamic symbol table. During 1098 s3_bfd_score_elf_size_dynamic_sections, this value is 1. Afterward, the 1099 section symbols are added and the count is higher. */ 1100 static bfd_boolean 1101 score_elf_sort_hash_table (struct bfd_link_info *info, 1102 unsigned long max_local) 1103 { 1104 struct score_elf_hash_sort_data hsd; 1105 struct score_got_info *g; 1106 bfd *dynobj; 1107 1108 dynobj = elf_hash_table (info)->dynobj; 1109 1110 g = score_elf_got_info (dynobj, NULL); 1111 1112 hsd.low = NULL; 1113 hsd.max_unref_got_dynindx = 1114 hsd.min_got_dynindx = elf_hash_table (info)->dynsymcount 1115 /* In the multi-got case, assigned_gotno of the master got_info 1116 indicate the number of entries that aren't referenced in the 1117 primary GOT, but that must have entries because there are 1118 dynamic relocations that reference it. Since they aren't 1119 referenced, we move them to the end of the GOT, so that they 1120 don't prevent other entries that are referenced from getting 1121 too large offsets. */ 1122 - (g->next ? g->assigned_gotno : 0); 1123 hsd.max_non_got_dynindx = max_local; 1124 score_elf_link_hash_traverse (elf_hash_table (info), 1125 score_elf_sort_hash_table_f, 1126 &hsd); 1127 1128 /* There should have been enough room in the symbol table to 1129 accommodate both the GOT and non-GOT symbols. */ 1130 BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx); 1131 BFD_ASSERT ((unsigned long)hsd.max_unref_got_dynindx 1132 <= elf_hash_table (info)->dynsymcount); 1133 1134 /* Now we know which dynamic symbol has the lowest dynamic symbol 1135 table index in the GOT. */ 1136 g->global_gotsym = hsd.low; 1137 1138 return TRUE; 1139 } 1140 1141 /* Create an entry in an score ELF linker hash table. */ 1142 1143 static struct bfd_hash_entry * 1144 score_elf_link_hash_newfunc (struct bfd_hash_entry *entry, 1145 struct bfd_hash_table *table, 1146 const char *string) 1147 { 1148 struct score_elf_link_hash_entry *ret = (struct score_elf_link_hash_entry *) entry; 1149 1150 /* Allocate the structure if it has not already been allocated by a subclass. */ 1151 if (ret == NULL) 1152 ret = bfd_hash_allocate (table, sizeof (struct score_elf_link_hash_entry)); 1153 if (ret == NULL) 1154 return (struct bfd_hash_entry *) ret; 1155 1156 /* Call the allocation method of the superclass. */ 1157 ret = ((struct score_elf_link_hash_entry *) 1158 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); 1159 1160 if (ret != NULL) 1161 { 1162 ret->possibly_dynamic_relocs = 0; 1163 ret->readonly_reloc = FALSE; 1164 ret->no_fn_stub = FALSE; 1165 ret->forced_local = FALSE; 1166 } 1167 1168 return (struct bfd_hash_entry *) ret; 1169 } 1170 1171 /* Returns the first relocation of type r_type found, beginning with 1172 RELOCATION. RELEND is one-past-the-end of the relocation table. */ 1173 static const Elf_Internal_Rela * 1174 score_elf_next_relocation (bfd *abfd ATTRIBUTE_UNUSED, unsigned int r_type, 1175 const Elf_Internal_Rela *relocation, 1176 const Elf_Internal_Rela *relend) 1177 { 1178 while (relocation < relend) 1179 { 1180 if (ELF32_R_TYPE (relocation->r_info) == r_type) 1181 return relocation; 1182 1183 ++relocation; 1184 } 1185 1186 /* We didn't find it. */ 1187 bfd_set_error (bfd_error_bad_value); 1188 return NULL; 1189 } 1190 1191 /* This function is called via qsort() to sort the dynamic relocation 1192 entries by increasing r_symndx value. */ 1193 static int 1194 score_elf_sort_dynamic_relocs (const void *arg1, const void *arg2) 1195 { 1196 Elf_Internal_Rela int_reloc1; 1197 Elf_Internal_Rela int_reloc2; 1198 1199 bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg1, &int_reloc1); 1200 bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg2, &int_reloc2); 1201 1202 return (ELF32_R_SYM (int_reloc1.r_info) - ELF32_R_SYM (int_reloc2.r_info)); 1203 } 1204 1205 /* Return whether a relocation is against a local symbol. */ 1206 static bfd_boolean 1207 score_elf_local_relocation_p (bfd *input_bfd, 1208 const Elf_Internal_Rela *relocation, 1209 asection **local_sections, 1210 bfd_boolean check_forced) 1211 { 1212 unsigned long r_symndx; 1213 Elf_Internal_Shdr *symtab_hdr; 1214 struct score_elf_link_hash_entry *h; 1215 size_t extsymoff; 1216 1217 r_symndx = ELF32_R_SYM (relocation->r_info); 1218 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 1219 extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info; 1220 1221 if (r_symndx < extsymoff) 1222 return TRUE; 1223 if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL) 1224 return TRUE; 1225 1226 if (check_forced) 1227 { 1228 /* Look up the hash table to check whether the symbol was forced local. */ 1229 h = (struct score_elf_link_hash_entry *) 1230 elf_sym_hashes (input_bfd) [r_symndx - extsymoff]; 1231 /* Find the real hash-table entry for this symbol. */ 1232 while (h->root.root.type == bfd_link_hash_indirect 1233 || h->root.root.type == bfd_link_hash_warning) 1234 h = (struct score_elf_link_hash_entry *) h->root.root.u.i.link; 1235 if (h->root.forced_local) 1236 return TRUE; 1237 } 1238 1239 return FALSE; 1240 } 1241 1242 /* Returns the dynamic relocation section for DYNOBJ. */ 1243 static asection * 1244 score_elf_rel_dyn_section (bfd *dynobj, bfd_boolean create_p) 1245 { 1246 static const char dname[] = ".rel.dyn"; 1247 asection *sreloc; 1248 1249 sreloc = bfd_get_linker_section (dynobj, dname); 1250 if (sreloc == NULL && create_p) 1251 { 1252 sreloc = bfd_make_section_anyway_with_flags (dynobj, dname, 1253 (SEC_ALLOC 1254 | SEC_LOAD 1255 | SEC_HAS_CONTENTS 1256 | SEC_IN_MEMORY 1257 | SEC_LINKER_CREATED 1258 | SEC_READONLY)); 1259 if (sreloc == NULL 1260 || ! bfd_set_section_alignment (dynobj, sreloc, 1261 SCORE_ELF_LOG_FILE_ALIGN (dynobj))) 1262 return NULL; 1263 } 1264 return sreloc; 1265 } 1266 1267 static void 1268 score_elf_allocate_dynamic_relocations (bfd *abfd, unsigned int n) 1269 { 1270 asection *s; 1271 1272 s = score_elf_rel_dyn_section (abfd, FALSE); 1273 BFD_ASSERT (s != NULL); 1274 1275 if (s->size == 0) 1276 { 1277 /* Make room for a null element. */ 1278 s->size += SCORE_ELF_REL_SIZE (abfd); 1279 ++s->reloc_count; 1280 } 1281 s->size += n * SCORE_ELF_REL_SIZE (abfd); 1282 } 1283 1284 /* Create a rel.dyn relocation for the dynamic linker to resolve. REL 1285 is the original relocation, which is now being transformed into a 1286 dynamic relocation. The ADDENDP is adjusted if necessary; the 1287 caller should store the result in place of the original addend. */ 1288 static bfd_boolean 1289 score_elf_create_dynamic_relocation (bfd *output_bfd, 1290 struct bfd_link_info *info, 1291 const Elf_Internal_Rela *rel, 1292 struct score_elf_link_hash_entry *h, 1293 bfd_vma symbol, 1294 bfd_vma *addendp, asection *input_section) 1295 { 1296 Elf_Internal_Rela outrel[3]; 1297 asection *sreloc; 1298 bfd *dynobj; 1299 int r_type; 1300 long indx; 1301 bfd_boolean defined_p; 1302 1303 r_type = ELF32_R_TYPE (rel->r_info); 1304 dynobj = elf_hash_table (info)->dynobj; 1305 sreloc = score_elf_rel_dyn_section (dynobj, FALSE); 1306 BFD_ASSERT (sreloc != NULL); 1307 BFD_ASSERT (sreloc->contents != NULL); 1308 BFD_ASSERT (sreloc->reloc_count * SCORE_ELF_REL_SIZE (output_bfd) < sreloc->size); 1309 1310 outrel[0].r_offset = 1311 _bfd_elf_section_offset (output_bfd, info, input_section, rel[0].r_offset); 1312 outrel[1].r_offset = 1313 _bfd_elf_section_offset (output_bfd, info, input_section, rel[1].r_offset); 1314 outrel[2].r_offset = 1315 _bfd_elf_section_offset (output_bfd, info, input_section, rel[2].r_offset); 1316 1317 if (outrel[0].r_offset == MINUS_ONE) 1318 /* The relocation field has been deleted. */ 1319 return TRUE; 1320 1321 if (outrel[0].r_offset == MINUS_TWO) 1322 { 1323 /* The relocation field has been converted into a relative value of 1324 some sort. Functions like _bfd_elf_write_section_eh_frame expect 1325 the field to be fully relocated, so add in the symbol's value. */ 1326 *addendp += symbol; 1327 return TRUE; 1328 } 1329 1330 /* We must now calculate the dynamic symbol table index to use 1331 in the relocation. */ 1332 if (h != NULL 1333 && (! info->symbolic || !h->root.def_regular) 1334 /* h->root.dynindx may be -1 if this symbol was marked to 1335 become local. */ 1336 && h->root.dynindx != -1) 1337 { 1338 indx = h->root.dynindx; 1339 /* ??? glibc's ld.so just adds the final GOT entry to the 1340 relocation field. It therefore treats relocs against 1341 defined symbols in the same way as relocs against 1342 undefined symbols. */ 1343 defined_p = FALSE; 1344 } 1345 else 1346 { 1347 indx = 0; 1348 defined_p = TRUE; 1349 } 1350 1351 /* If the relocation was previously an absolute relocation and 1352 this symbol will not be referred to by the relocation, we must 1353 adjust it by the value we give it in the dynamic symbol table. 1354 Otherwise leave the job up to the dynamic linker. */ 1355 if (defined_p && r_type != R_SCORE_REL32) 1356 *addendp += symbol; 1357 1358 /* The relocation is always an REL32 relocation because we don't 1359 know where the shared library will wind up at load-time. */ 1360 outrel[0].r_info = ELF32_R_INFO ((unsigned long) indx, R_SCORE_REL32); 1361 1362 /* For strict adherence to the ABI specification, we should 1363 generate a R_SCORE_64 relocation record by itself before the 1364 _REL32/_64 record as well, such that the addend is read in as 1365 a 64-bit value (REL32 is a 32-bit relocation, after all). 1366 However, since none of the existing ELF64 SCORE dynamic 1367 loaders seems to care, we don't waste space with these 1368 artificial relocations. If this turns out to not be true, 1369 score_elf_allocate_dynamic_relocations() should be tweaked so 1370 as to make room for a pair of dynamic relocations per 1371 invocation if ABI_64_P, and here we should generate an 1372 additional relocation record with R_SCORE_64 by itself for a 1373 NULL symbol before this relocation record. */ 1374 outrel[1].r_info = ELF32_R_INFO (0, R_SCORE_NONE); 1375 outrel[2].r_info = ELF32_R_INFO (0, R_SCORE_NONE); 1376 1377 /* Adjust the output offset of the relocation to reference the 1378 correct location in the output file. */ 1379 outrel[0].r_offset += (input_section->output_section->vma 1380 + input_section->output_offset); 1381 outrel[1].r_offset += (input_section->output_section->vma 1382 + input_section->output_offset); 1383 outrel[2].r_offset += (input_section->output_section->vma 1384 + input_section->output_offset); 1385 1386 /* Put the relocation back out. We have to use the special 1387 relocation outputter in the 64-bit case since the 64-bit 1388 relocation format is non-standard. */ 1389 bfd_elf32_swap_reloc_out 1390 (output_bfd, &outrel[0], 1391 (sreloc->contents + sreloc->reloc_count * sizeof (Elf32_External_Rel))); 1392 1393 /* We've now added another relocation. */ 1394 ++sreloc->reloc_count; 1395 1396 /* Make sure the output section is writable. The dynamic linker 1397 will be writing to it. */ 1398 elf_section_data (input_section->output_section)->this_hdr.sh_flags |= SHF_WRITE; 1399 1400 return TRUE; 1401 } 1402 1403 static bfd_boolean 1404 score_elf_create_got_section (bfd *abfd, 1405 struct bfd_link_info *info, 1406 bfd_boolean maybe_exclude) 1407 { 1408 flagword flags; 1409 asection *s; 1410 struct elf_link_hash_entry *h; 1411 struct bfd_link_hash_entry *bh; 1412 struct score_got_info *g; 1413 bfd_size_type amt; 1414 1415 /* This function may be called more than once. */ 1416 s = score_elf_got_section (abfd, TRUE); 1417 if (s) 1418 { 1419 if (! maybe_exclude) 1420 s->flags &= ~SEC_EXCLUDE; 1421 return TRUE; 1422 } 1423 1424 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); 1425 1426 if (maybe_exclude) 1427 flags |= SEC_EXCLUDE; 1428 1429 /* We have to use an alignment of 2**4 here because this is hardcoded 1430 in the function stub generation and in the linker script. */ 1431 s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); 1432 if (s == NULL 1433 || ! bfd_set_section_alignment (abfd, s, 4)) 1434 return FALSE; 1435 1436 /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the 1437 linker script because we don't want to define the symbol if we 1438 are not creating a global offset table. */ 1439 bh = NULL; 1440 if (! (_bfd_generic_link_add_one_symbol 1441 (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, 1442 0, NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) 1443 return FALSE; 1444 1445 h = (struct elf_link_hash_entry *) bh; 1446 h->non_elf = 0; 1447 h->def_regular = 1; 1448 h->type = STT_OBJECT; 1449 1450 if (info->shared && ! bfd_elf_link_record_dynamic_symbol (info, h)) 1451 return FALSE; 1452 1453 amt = sizeof (struct score_got_info); 1454 g = bfd_alloc (abfd, amt); 1455 if (g == NULL) 1456 return FALSE; 1457 1458 g->global_gotsym = NULL; 1459 g->global_gotno = 0; 1460 1461 g->local_gotno = SCORE_RESERVED_GOTNO; 1462 g->assigned_gotno = SCORE_RESERVED_GOTNO; 1463 g->next = NULL; 1464 1465 g->got_entries = htab_try_create (1, score_elf_got_entry_hash, 1466 score_elf_got_entry_eq, NULL); 1467 if (g->got_entries == NULL) 1468 return FALSE; 1469 score_elf_section_data (s)->u.got_info = g; 1470 score_elf_section_data (s)->elf.this_hdr.sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_SCORE_GPREL; 1471 1472 return TRUE; 1473 } 1474 1475 /* Calculate the %high function. */ 1476 static bfd_vma 1477 score_elf_high (bfd_vma value) 1478 { 1479 return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff; 1480 } 1481 1482 /* Create a local GOT entry for VALUE. Return the index of the entry, 1483 or -1 if it could not be created. */ 1484 static struct score_got_entry * 1485 score_elf_create_local_got_entry (bfd *abfd, 1486 bfd *ibfd ATTRIBUTE_UNUSED, 1487 struct score_got_info *gg, 1488 asection *sgot, bfd_vma value, 1489 unsigned long r_symndx ATTRIBUTE_UNUSED, 1490 struct score_elf_link_hash_entry *h ATTRIBUTE_UNUSED, 1491 int r_type ATTRIBUTE_UNUSED) 1492 { 1493 struct score_got_entry entry, **loc; 1494 struct score_got_info *g; 1495 1496 entry.abfd = NULL; 1497 entry.symndx = -1; 1498 entry.d.address = value; 1499 1500 g = gg; 1501 loc = (struct score_got_entry **) htab_find_slot (g->got_entries, &entry, INSERT); 1502 if (*loc) 1503 return *loc; 1504 1505 entry.gotidx = SCORE_ELF_GOT_SIZE (abfd) * g->assigned_gotno++; 1506 1507 *loc = bfd_alloc (abfd, sizeof entry); 1508 1509 if (! *loc) 1510 return NULL; 1511 1512 memcpy (*loc, &entry, sizeof entry); 1513 1514 if (g->assigned_gotno >= g->local_gotno) 1515 { 1516 (*loc)->gotidx = -1; 1517 /* We didn't allocate enough space in the GOT. */ 1518 (*_bfd_error_handler) 1519 (_("not enough GOT space for local GOT entries")); 1520 bfd_set_error (bfd_error_bad_value); 1521 return NULL; 1522 } 1523 1524 score_bfd_put_32 (abfd, value, (sgot->contents + entry.gotidx)); 1525 1526 return *loc; 1527 } 1528 1529 /* Find a GOT entry whose higher-order 16 bits are the same as those 1530 for value. Return the index into the GOT for this entry. */ 1531 static bfd_vma 1532 score_elf_got16_entry (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, 1533 bfd_vma value, bfd_boolean external) 1534 { 1535 asection *sgot; 1536 struct score_got_info *g; 1537 struct score_got_entry *entry; 1538 1539 if (!external) 1540 { 1541 /* Although the ABI says that it is "the high-order 16 bits" that we 1542 want, it is really the %high value. The complete value is 1543 calculated with a `addiu' of a LO16 relocation, just as with a 1544 HI16/LO16 pair. */ 1545 value = score_elf_high (value) << 16; 1546 } 1547 1548 g = score_elf_got_info (elf_hash_table (info)->dynobj, &sgot); 1549 1550 entry = score_elf_create_local_got_entry (abfd, ibfd, g, sgot, value, 0, NULL, 1551 R_SCORE_GOT15); 1552 if (entry) 1553 return entry->gotidx; 1554 else 1555 return MINUS_ONE; 1556 } 1557 1558 static void 1559 s3_bfd_score_elf_hide_symbol (struct bfd_link_info *info, 1560 struct elf_link_hash_entry *entry, 1561 bfd_boolean force_local) 1562 { 1563 bfd *dynobj; 1564 asection *got; 1565 struct score_got_info *g; 1566 struct score_elf_link_hash_entry *h; 1567 1568 h = (struct score_elf_link_hash_entry *) entry; 1569 if (h->forced_local) 1570 return; 1571 h->forced_local = TRUE; 1572 1573 dynobj = elf_hash_table (info)->dynobj; 1574 if (dynobj != NULL && force_local) 1575 { 1576 got = score_elf_got_section (dynobj, FALSE); 1577 if (got == NULL) 1578 return; 1579 g = score_elf_section_data (got)->u.got_info; 1580 1581 if (g->next) 1582 { 1583 struct score_got_entry e; 1584 struct score_got_info *gg = g; 1585 1586 /* Since we're turning what used to be a global symbol into a 1587 local one, bump up the number of local entries of each GOT 1588 that had an entry for it. This will automatically decrease 1589 the number of global entries, since global_gotno is actually 1590 the upper limit of global entries. */ 1591 e.abfd = dynobj; 1592 e.symndx = -1; 1593 e.d.h = h; 1594 1595 for (g = g->next; g != gg; g = g->next) 1596 if (htab_find (g->got_entries, &e)) 1597 { 1598 BFD_ASSERT (g->global_gotno > 0); 1599 g->local_gotno++; 1600 g->global_gotno--; 1601 } 1602 1603 /* If this was a global symbol forced into the primary GOT, we 1604 no longer need an entry for it. We can't release the entry 1605 at this point, but we must at least stop counting it as one 1606 of the symbols that required a forced got entry. */ 1607 if (h->root.got.offset == 2) 1608 { 1609 BFD_ASSERT (gg->assigned_gotno > 0); 1610 gg->assigned_gotno--; 1611 } 1612 } 1613 else if (g->global_gotno == 0 && g->global_gotsym == NULL) 1614 /* If we haven't got through GOT allocation yet, just bump up the 1615 number of local entries, as this symbol won't be counted as 1616 global. */ 1617 g->local_gotno++; 1618 else if (h->root.got.offset == 1) 1619 { 1620 /* If we're past non-multi-GOT allocation and this symbol had 1621 been marked for a global got entry, give it a local entry 1622 instead. */ 1623 BFD_ASSERT (g->global_gotno > 0); 1624 g->local_gotno++; 1625 g->global_gotno--; 1626 } 1627 } 1628 1629 _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local); 1630 } 1631 1632 /* If H is a symbol that needs a global GOT entry, but has a dynamic 1633 symbol table index lower than any we've seen to date, record it for 1634 posterity. */ 1635 static bfd_boolean 1636 score_elf_record_global_got_symbol (struct elf_link_hash_entry *h, 1637 bfd *abfd, 1638 struct bfd_link_info *info, 1639 struct score_got_info *g) 1640 { 1641 struct score_got_entry entry, **loc; 1642 1643 /* A global symbol in the GOT must also be in the dynamic symbol table. */ 1644 if (h->dynindx == -1) 1645 { 1646 switch (ELF_ST_VISIBILITY (h->other)) 1647 { 1648 case STV_INTERNAL: 1649 case STV_HIDDEN: 1650 s3_bfd_score_elf_hide_symbol (info, h, TRUE); 1651 break; 1652 } 1653 if (!bfd_elf_link_record_dynamic_symbol (info, h)) 1654 return FALSE; 1655 } 1656 1657 entry.abfd = abfd; 1658 entry.symndx = -1; 1659 entry.d.h = (struct score_elf_link_hash_entry *)h; 1660 1661 loc = (struct score_got_entry **)htab_find_slot (g->got_entries, &entry, INSERT); 1662 1663 /* If we've already marked this entry as needing GOT space, we don't 1664 need to do it again. */ 1665 if (*loc) 1666 return TRUE; 1667 1668 *loc = bfd_alloc (abfd, sizeof entry); 1669 if (! *loc) 1670 return FALSE; 1671 1672 entry.gotidx = -1; 1673 1674 memcpy (*loc, &entry, sizeof (entry)); 1675 1676 if (h->got.offset != MINUS_ONE) 1677 return TRUE; 1678 1679 /* By setting this to a value other than -1, we are indicating that 1680 there needs to be a GOT entry for H. Avoid using zero, as the 1681 generic ELF copy_indirect_symbol tests for <= 0. */ 1682 h->got.offset = 1; 1683 1684 return TRUE; 1685 } 1686 1687 /* Reserve space in G for a GOT entry containing the value of symbol 1688 SYMNDX in input bfd ABDF, plus ADDEND. */ 1689 static bfd_boolean 1690 score_elf_record_local_got_symbol (bfd *abfd, 1691 long symndx, 1692 bfd_vma addend, 1693 struct score_got_info *g) 1694 { 1695 struct score_got_entry entry, **loc; 1696 1697 entry.abfd = abfd; 1698 entry.symndx = symndx; 1699 entry.d.addend = addend; 1700 loc = (struct score_got_entry **)htab_find_slot (g->got_entries, &entry, INSERT); 1701 1702 if (*loc) 1703 return TRUE; 1704 1705 entry.gotidx = g->local_gotno++; 1706 1707 *loc = bfd_alloc (abfd, sizeof(entry)); 1708 if (! *loc) 1709 return FALSE; 1710 1711 memcpy (*loc, &entry, sizeof (entry)); 1712 1713 return TRUE; 1714 } 1715 1716 /* Returns the GOT offset at which the indicated address can be found. 1717 If there is not yet a GOT entry for this value, create one. 1718 Returns -1 if no satisfactory GOT offset can be found. */ 1719 static bfd_vma 1720 score_elf_local_got_index (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, 1721 bfd_vma value, unsigned long r_symndx, 1722 struct score_elf_link_hash_entry *h, int r_type) 1723 { 1724 asection *sgot; 1725 struct score_got_info *g; 1726 struct score_got_entry *entry; 1727 1728 g = score_elf_got_info (elf_hash_table (info)->dynobj, &sgot); 1729 1730 entry = score_elf_create_local_got_entry (abfd, ibfd, g, sgot, value, 1731 r_symndx, h, r_type); 1732 if (!entry) 1733 return MINUS_ONE; 1734 1735 else 1736 return entry->gotidx; 1737 } 1738 1739 /* Returns the GOT index for the global symbol indicated by H. */ 1740 1741 static bfd_vma 1742 score_elf_global_got_index (bfd *abfd, struct elf_link_hash_entry *h) 1743 { 1744 bfd_vma got_index; 1745 asection *sgot; 1746 struct score_got_info *g; 1747 long global_got_dynindx = 0; 1748 1749 g = score_elf_got_info (abfd, &sgot); 1750 if (g->global_gotsym != NULL) 1751 global_got_dynindx = g->global_gotsym->dynindx; 1752 1753 /* Once we determine the global GOT entry with the lowest dynamic 1754 symbol table index, we must put all dynamic symbols with greater 1755 indices into the GOT. That makes it easy to calculate the GOT 1756 offset. */ 1757 BFD_ASSERT (h->dynindx >= global_got_dynindx); 1758 got_index = ((h->dynindx - global_got_dynindx + g->local_gotno) * SCORE_ELF_GOT_SIZE (abfd)); 1759 BFD_ASSERT (got_index < sgot->size); 1760 1761 return got_index; 1762 } 1763 1764 /* Returns the offset for the entry at the INDEXth position in the GOT. */ 1765 1766 static bfd_vma 1767 score_elf_got_offset_from_index (bfd *dynobj, 1768 bfd *output_bfd, 1769 bfd *input_bfd ATTRIBUTE_UNUSED, 1770 bfd_vma got_index) 1771 { 1772 asection *sgot; 1773 bfd_vma gp; 1774 1775 score_elf_got_info (dynobj, &sgot); 1776 gp = _bfd_get_gp_value (output_bfd); 1777 1778 return sgot->output_section->vma + sgot->output_offset + got_index - gp; 1779 } 1780 1781 /* Follow indirect and warning hash entries so that each got entry 1782 points to the final symbol definition. P must point to a pointer 1783 to the hash table we're traversing. Since this traversal may 1784 modify the hash table, we set this pointer to NULL to indicate 1785 we've made a potentially-destructive change to the hash table, so 1786 the traversal must be restarted. */ 1787 static int 1788 score_elf_resolve_final_got_entry (void **entryp, void *p) 1789 { 1790 struct score_got_entry *entry = (struct score_got_entry *)*entryp; 1791 htab_t got_entries = *(htab_t *)p; 1792 1793 if (entry->abfd != NULL && entry->symndx == -1) 1794 { 1795 struct score_elf_link_hash_entry *h = entry->d.h; 1796 1797 while (h->root.root.type == bfd_link_hash_indirect 1798 || h->root.root.type == bfd_link_hash_warning) 1799 h = (struct score_elf_link_hash_entry *) h->root.root.u.i.link; 1800 1801 if (entry->d.h == h) 1802 return 1; 1803 1804 entry->d.h = h; 1805 1806 /* If we can't find this entry with the new bfd hash, re-insert 1807 it, and get the traversal restarted. */ 1808 if (! htab_find (got_entries, entry)) 1809 { 1810 htab_clear_slot (got_entries, entryp); 1811 entryp = htab_find_slot (got_entries, entry, INSERT); 1812 if (! *entryp) 1813 *entryp = entry; 1814 /* Abort the traversal, since the whole table may have 1815 moved, and leave it up to the parent to restart the 1816 process. */ 1817 *(htab_t *)p = NULL; 1818 return 0; 1819 } 1820 /* We might want to decrement the global_gotno count, but it's 1821 either too early or too late for that at this point. */ 1822 } 1823 1824 return 1; 1825 } 1826 1827 /* Turn indirect got entries in a got_entries table into their final locations. */ 1828 static void 1829 score_elf_resolve_final_got_entries (struct score_got_info *g) 1830 { 1831 htab_t got_entries; 1832 1833 do 1834 { 1835 got_entries = g->got_entries; 1836 1837 htab_traverse (got_entries, 1838 score_elf_resolve_final_got_entry, 1839 &got_entries); 1840 } 1841 while (got_entries == NULL); 1842 } 1843 1844 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. for -r */ 1845 static void 1846 score_elf_add_to_rel (bfd *abfd, 1847 bfd_byte *address, 1848 reloc_howto_type *howto, 1849 bfd_signed_vma increment) 1850 { 1851 bfd_signed_vma addend; 1852 bfd_vma contents; 1853 unsigned long offset; 1854 unsigned long r_type = howto->type; 1855 unsigned long hi16_addend, hi16_offset, hi16_value, uvalue; 1856 1857 contents = score_bfd_get_32 (abfd, address); 1858 /* Get the (signed) value from the instruction. */ 1859 addend = contents & howto->src_mask; 1860 if (addend & ((howto->src_mask + 1) >> 1)) 1861 { 1862 bfd_signed_vma mask; 1863 1864 mask = -1; 1865 mask &= ~howto->src_mask; 1866 addend |= mask; 1867 } 1868 /* Add in the increment, (which is a byte value). */ 1869 switch (r_type) 1870 { 1871 case R_SCORE_PC19: 1872 offset = 1873 (((contents & howto->src_mask) & 0x3ff0000) >> 6) | ((contents & howto->src_mask) & 0x3ff); 1874 offset += increment; 1875 contents = 1876 (contents & ~howto-> 1877 src_mask) | (((offset << 6) & howto->src_mask) & 0x3ff0000) | (offset & 0x3ff); 1878 score_bfd_put_32 (abfd, contents, address); 1879 break; 1880 case R_SCORE_HI16: 1881 break; 1882 case R_SCORE_LO16: 1883 hi16_addend = score_bfd_get_32 (abfd, address - 4); 1884 hi16_offset = ((((hi16_addend >> 16) & 0x3) << 15) | (hi16_addend & 0x7fff)) >> 1; 1885 offset = ((((contents >> 16) & 0x3) << 15) | (contents & 0x7fff)) >> 1; 1886 offset = (hi16_offset << 16) | (offset & 0xffff); 1887 uvalue = increment + offset; 1888 hi16_offset = (uvalue >> 16) << 1; 1889 hi16_value = (hi16_addend & (~(howto->dst_mask))) 1890 | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000); 1891 score_bfd_put_32 (abfd, hi16_value, address - 4); 1892 offset = (uvalue & 0xffff) << 1; 1893 contents = (contents & (~(howto->dst_mask))) | (offset & 0x7fff) | ((offset << 1) & 0x30000); 1894 score_bfd_put_32 (abfd, contents, address); 1895 break; 1896 case R_SCORE_24: 1897 offset = 1898 (((contents & howto->src_mask) >> 1) & 0x1ff8000) | ((contents & howto->src_mask) & 0x7fff); 1899 offset += increment; 1900 contents = 1901 (contents & ~howto-> 1902 src_mask) | (((offset << 1) & howto->src_mask) & 0x3ff0000) | (offset & 0x7fff); 1903 score_bfd_put_32 (abfd, contents, address); 1904 break; 1905 1906 case R_SCORE16_11: 1907 1908 contents = score_bfd_get_16 (abfd, address); 1909 offset = contents & howto->src_mask; 1910 offset += increment; 1911 contents = (contents & ~howto->src_mask) | (offset & howto->src_mask); 1912 score_bfd_put_16 (abfd, contents, address); 1913 1914 break; 1915 case R_SCORE16_PC8: 1916 1917 contents = score_bfd_get_16 (abfd, address); 1918 offset = (contents & howto->src_mask) + ((increment >> 1) & 0x1ff); 1919 contents = (contents & (~howto->src_mask)) | (offset & howto->src_mask); 1920 score_bfd_put_16 (abfd, contents, address); 1921 1922 break; 1923 1924 case R_SCORE_BCMP: 1925 contents = score_bfd_get_32 (abfd, address); 1926 offset = (contents & howto->src_mask); 1927 offset <<= howto->rightshift; 1928 offset += increment; 1929 offset >>= howto->rightshift; 1930 contents = (contents & (~howto->src_mask)) | (offset & howto->src_mask); 1931 score_bfd_put_32 (abfd, contents, address); 1932 break; 1933 1934 case R_SCORE_IMM30: 1935 contents = score_bfd_get_48 (abfd, address); 1936 offset = (contents & howto->src_mask); 1937 offset <<= howto->rightshift; 1938 offset += increment; 1939 offset >>= howto->rightshift; 1940 contents = (contents & (~howto->src_mask)) | (offset & howto->src_mask); 1941 score_bfd_put_48 (abfd, contents, address); 1942 break; 1943 1944 case R_SCORE_IMM32: 1945 contents = score_bfd_get_48 (abfd, address); 1946 offset = (contents & howto->src_mask); 1947 offset += increment; 1948 contents = (contents & (~howto->src_mask)) | (offset & howto->src_mask); 1949 score_bfd_put_48 (abfd, contents, address); 1950 break; 1951 1952 default: 1953 addend += increment; 1954 contents = (contents & ~howto->dst_mask) | (addend & howto->dst_mask); 1955 score_bfd_put_32 (abfd, contents, address); 1956 break; 1957 } 1958 } 1959 1960 /* Perform a relocation as part of a final link. */ 1961 static bfd_reloc_status_type 1962 score_elf_final_link_relocate (reloc_howto_type *howto, 1963 bfd *input_bfd, 1964 bfd *output_bfd, 1965 asection *input_section, 1966 bfd_byte *contents, 1967 Elf_Internal_Rela *rel, 1968 Elf_Internal_Rela *relocs, 1969 bfd_vma symbol, 1970 struct bfd_link_info *info, 1971 const char *sym_name ATTRIBUTE_UNUSED, 1972 int sym_flags ATTRIBUTE_UNUSED, 1973 struct score_elf_link_hash_entry *h, 1974 asection **local_sections, 1975 bfd_boolean gp_disp_p) 1976 { 1977 unsigned long r_type; 1978 unsigned long r_symndx; 1979 bfd_byte *hit_data = contents + rel->r_offset; 1980 bfd_vma addend; 1981 /* The final GP value to be used for the relocatable, executable, or 1982 shared object file being produced. */ 1983 bfd_vma gp = MINUS_ONE; 1984 /* The place (section offset or address) of the storage unit being relocated. */ 1985 bfd_vma rel_addr; 1986 /* The offset into the global offset table at which the address of the relocation entry 1987 symbol, adjusted by the addend, resides during execution. */ 1988 bfd_vma g = MINUS_ONE; 1989 /* TRUE if the symbol referred to by this relocation is a local symbol. */ 1990 bfd_boolean local_p; 1991 /* The eventual value we will relocate. */ 1992 bfd_vma value = symbol; 1993 unsigned long hi16_addend, hi16_offset, hi16_value, uvalue, offset, abs_value = 0; 1994 1995 1996 if (elf_gp (output_bfd) == 0) 1997 { 1998 struct bfd_link_hash_entry *bh; 1999 asection *o; 2000 2001 bh = bfd_link_hash_lookup (info->hash, "_gp", 0, 0, 1); 2002 if (bh != NULL && bh->type == bfd_link_hash_defined) 2003 elf_gp (output_bfd) = (bh->u.def.value 2004 + bh->u.def.section->output_section->vma 2005 + bh->u.def.section->output_offset); 2006 else if (info->relocatable) 2007 { 2008 bfd_vma lo = -1; 2009 2010 /* Find the GP-relative section with the lowest offset. */ 2011 for (o = output_bfd->sections; o != NULL; o = o->next) 2012 if (o->vma < lo) 2013 lo = o->vma; 2014 /* And calculate GP relative to that. */ 2015 elf_gp (output_bfd) = lo + ELF_SCORE_GP_OFFSET (input_bfd); 2016 } 2017 else 2018 { 2019 /* If the relocate_section function needs to do a reloc 2020 involving the GP value, it should make a reloc_dangerous 2021 callback to warn that GP is not defined. */ 2022 } 2023 } 2024 2025 /* Parse the relocation. */ 2026 r_symndx = ELF32_R_SYM (rel->r_info); 2027 r_type = ELF32_R_TYPE (rel->r_info); 2028 rel_addr = (input_section->output_section->vma + input_section->output_offset + rel->r_offset); 2029 local_p = score_elf_local_relocation_p (input_bfd, rel, local_sections, TRUE); 2030 2031 if (r_type == R_SCORE_GOT15) 2032 { 2033 const Elf_Internal_Rela *relend; 2034 const Elf_Internal_Rela *lo16_rel; 2035 const struct elf_backend_data *bed; 2036 bfd_vma lo_value = 0; 2037 2038 bed = get_elf_backend_data (output_bfd); 2039 relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel; 2040 lo16_rel = score_elf_next_relocation (input_bfd, R_SCORE_GOT_LO16, rel, relend); 2041 if ((local_p) && (lo16_rel != NULL)) 2042 { 2043 bfd_vma tmp = 0; 2044 tmp = score_bfd_get_32 (input_bfd, contents + lo16_rel->r_offset); 2045 lo_value = (((tmp >> 16) & 0x3) << 14) | ((tmp & 0x7fff) >> 1); 2046 } 2047 addend = lo_value; 2048 } 2049 /* For score3 R_SCORE_ABS32. */ 2050 else if (r_type == R_SCORE_ABS32 || r_type == R_SCORE_REL32) 2051 { 2052 addend = (bfd_get_32 (input_bfd, hit_data) >> howto->bitpos) & howto->src_mask; 2053 } 2054 else 2055 { 2056 addend = (score_bfd_get_32 (input_bfd, hit_data) >> howto->bitpos) & howto->src_mask; 2057 } 2058 2059 /* If we haven't already determined the GOT offset, or the GP value, 2060 and we're going to need it, get it now. */ 2061 switch (r_type) 2062 { 2063 case R_SCORE_CALL15: 2064 case R_SCORE_GOT15: 2065 if (!local_p) 2066 { 2067 g = score_elf_global_got_index (elf_hash_table (info)->dynobj, 2068 (struct elf_link_hash_entry *) h); 2069 if ((! elf_hash_table (info)->dynamic_sections_created 2070 || (info->shared 2071 && (info->symbolic || h->root.dynindx == -1) 2072 && h->root.def_regular))) 2073 { 2074 /* This is a static link or a -Bsymbolic link. The 2075 symbol is defined locally, or was forced to be local. 2076 We must initialize this entry in the GOT. */ 2077 bfd *tmpbfd = elf_hash_table (info)->dynobj; 2078 asection *sgot = score_elf_got_section (tmpbfd, FALSE); 2079 score_bfd_put_32 (tmpbfd, value, sgot->contents + g); 2080 } 2081 } 2082 else if (r_type == R_SCORE_GOT15 || r_type == R_SCORE_CALL15) 2083 { 2084 /* There's no need to create a local GOT entry here; the 2085 calculation for a local GOT15 entry does not involve G. */ 2086 ; 2087 } 2088 else 2089 { 2090 g = score_elf_local_got_index (output_bfd, input_bfd, info, 2091 symbol + addend, r_symndx, h, r_type); 2092 if (g == MINUS_ONE) 2093 return bfd_reloc_outofrange; 2094 } 2095 2096 /* Convert GOT indices to actual offsets. */ 2097 g = score_elf_got_offset_from_index (elf_hash_table (info)->dynobj, 2098 output_bfd, input_bfd, g); 2099 break; 2100 2101 case R_SCORE_HI16: 2102 case R_SCORE_LO16: 2103 case R_SCORE_GPREL32: 2104 gp = _bfd_get_gp_value (output_bfd); 2105 break; 2106 2107 case R_SCORE_GP15: 2108 gp = _bfd_get_gp_value (output_bfd); 2109 2110 default: 2111 break; 2112 } 2113 2114 switch (r_type) 2115 { 2116 case R_SCORE_NONE: 2117 return bfd_reloc_ok; 2118 2119 case R_SCORE_ABS32: 2120 case R_SCORE_REL32: 2121 if ((info->shared 2122 || (elf_hash_table (info)->dynamic_sections_created 2123 && h != NULL 2124 && h->root.def_dynamic 2125 && !h->root.def_regular)) 2126 && r_symndx != STN_UNDEF 2127 && (input_section->flags & SEC_ALLOC) != 0) 2128 { 2129 /* If we're creating a shared library, or this relocation is against a symbol 2130 in a shared library, then we can't know where the symbol will end up. 2131 So, we create a relocation record in the output, and leave the job up 2132 to the dynamic linker. */ 2133 value = addend; 2134 if (!score_elf_create_dynamic_relocation (output_bfd, info, rel, h, 2135 symbol, &value, 2136 input_section)) 2137 return bfd_reloc_undefined; 2138 } 2139 else if (r_symndx == STN_UNDEF) 2140 /* r_symndx will be STN_UNDEF (zero) only for relocs against symbols 2141 from removed linkonce sections, or sections discarded by 2142 a linker script. */ 2143 value = 0; 2144 else 2145 { 2146 if (r_type != R_SCORE_REL32) 2147 value = symbol + addend; 2148 else 2149 value = addend; 2150 } 2151 value &= howto->dst_mask; 2152 bfd_put_32 (input_bfd, value, hit_data); 2153 return bfd_reloc_ok; 2154 2155 case R_SCORE_ABS16: 2156 value += addend; 2157 if ((long)value > 0x7fff || (long)value < -0x8000) 2158 return bfd_reloc_overflow; 2159 score_bfd_put_16 (input_bfd, value, hit_data); 2160 return bfd_reloc_ok; 2161 2162 case R_SCORE_24: 2163 addend = score_bfd_get_32 (input_bfd, hit_data); 2164 offset = (((addend & howto->src_mask) >> 1) & 0x1ff8000) | ((addend & howto->src_mask) & 0x7fff); 2165 if ((offset & 0x1000000) != 0) 2166 offset |= 0xfe000000; 2167 value += offset; 2168 abs_value = abs (value - rel_addr); 2169 if ((abs_value & 0xfe000000) != 0) 2170 return bfd_reloc_overflow; 2171 addend = (addend & ~howto->src_mask) 2172 | (((value << 1) & howto->src_mask) & 0x3ff0000) | (value & 0x7fff); 2173 score_bfd_put_32 (input_bfd, addend, hit_data); 2174 return bfd_reloc_ok; 2175 2176 /* signed imm32. */ 2177 case R_SCORE_IMM30: 2178 { 2179 int not_word_align_p = 0; 2180 bfd_vma imm_offset = 0; 2181 addend = score_bfd_get_48 (input_bfd, hit_data); 2182 imm_offset = ((addend >> 7) & 0xff) 2183 | (((addend >> 16) & 0x7fff) << 8) 2184 | (((addend >> 32) & 0x7f) << 23); 2185 imm_offset <<= howto->rightshift; 2186 value += imm_offset; 2187 value &= 0xffffffff; 2188 2189 /* Check lw48/sw48 rd, value/label word align. */ 2190 if ((value & 0x3) != 0) 2191 not_word_align_p = 1; 2192 2193 value >>= howto->rightshift; 2194 addend = (addend & ~howto->src_mask) 2195 | (((value & 0xff) >> 0) << 7) 2196 | (((value & 0x7fff00) >> 8) << 16) 2197 | (((value & 0x3f800000) >> 23) << 32); 2198 score_bfd_put_48 (input_bfd, addend, hit_data); 2199 if (not_word_align_p) 2200 return bfd_reloc_other; 2201 else 2202 return bfd_reloc_ok; 2203 } 2204 2205 case R_SCORE_IMM32: 2206 { 2207 bfd_vma imm_offset = 0; 2208 addend = score_bfd_get_48 (input_bfd, hit_data); 2209 imm_offset = ((addend >> 5) & 0x3ff) 2210 | (((addend >> 16) & 0x7fff) << 10) 2211 | (((addend >> 32) & 0x7f) << 25); 2212 value += imm_offset; 2213 value &= 0xffffffff; 2214 addend = (addend & ~howto->src_mask) 2215 | ((value & 0x3ff) << 5) 2216 | (((value >> 10) & 0x7fff) << 16) 2217 | (((value >> 25) & 0x7f) << 32); 2218 score_bfd_put_48 (input_bfd, addend, hit_data); 2219 return bfd_reloc_ok; 2220 } 2221 2222 case R_SCORE_PC19: 2223 addend = score_bfd_get_32 (input_bfd, hit_data); 2224 offset = (((addend & howto->src_mask) & 0x3ff0000) >> 6) | ((addend & howto->src_mask) & 0x3ff); 2225 if ((offset & 0x80000) != 0) 2226 offset |= 0xfff00000; 2227 abs_value = value = value - rel_addr + offset; 2228 /* exceed 20 bit : overflow. */ 2229 if ((abs_value & 0x80000000) == 0x80000000) 2230 abs_value = 0xffffffff - value + 1; 2231 if ((abs_value & 0xfff80000) != 0) 2232 return bfd_reloc_overflow; 2233 addend = (addend & ~howto->src_mask) 2234 | (((value << 6) & howto->src_mask) & 0x3ff0000) | (value & 0x3ff); 2235 score_bfd_put_32 (input_bfd, addend, hit_data); 2236 return bfd_reloc_ok; 2237 2238 case R_SCORE16_11: 2239 addend = score_bfd_get_16 (input_bfd, hit_data); 2240 offset = addend & howto->src_mask; 2241 if ((offset & 0x800) != 0) /* Offset is negative. */ 2242 offset |= 0xfffff000; 2243 value += offset; 2244 abs_value = abs (value - rel_addr); 2245 if ((abs_value & 0xfffff000) != 0) 2246 return bfd_reloc_overflow; 2247 addend = (addend & ~howto->src_mask) | (value & howto->src_mask); 2248 score_bfd_put_16 (input_bfd, addend, hit_data); 2249 return bfd_reloc_ok; 2250 2251 case R_SCORE16_PC8: 2252 addend = score_bfd_get_16 (input_bfd, hit_data); 2253 offset = (addend & howto->src_mask) << 1; 2254 if ((offset & 0x200) != 0) /* Offset is negative. */ 2255 offset |= 0xfffffe00; 2256 abs_value = value = value - rel_addr + offset; 2257 /* Sign bit + exceed 9 bit. */ 2258 if (((value & 0xfffffe00) != 0) && ((value & 0xfffffe00) != 0xfffffe00)) 2259 return bfd_reloc_overflow; 2260 value >>= 1; 2261 addend = (addend & ~howto->src_mask) | (value & howto->src_mask); 2262 score_bfd_put_16 (input_bfd, addend, hit_data); 2263 return bfd_reloc_ok; 2264 2265 case R_SCORE_BCMP: 2266 addend = score_bfd_get_32 (input_bfd, hit_data); 2267 offset = (addend & howto->src_mask) << howto->rightshift; 2268 if ((offset & 0x200) != 0) /* Offset is negative. */ 2269 offset |= 0xfffffe00; 2270 value = value - rel_addr + offset; 2271 /* Sign bit + exceed 9 bit. */ 2272 if (((value & 0xfffffe00) != 0) && ((value & 0xfffffe00) != 0xfffffe00)) 2273 return bfd_reloc_overflow; 2274 value >>= howto->rightshift; 2275 addend = (addend & ~howto->src_mask) 2276 | (value & 0x1) 2277 | (((value >> 1) & 0x7) << 7) 2278 | (((value >> 4) & 0x1f) << 21); 2279 score_bfd_put_32 (input_bfd, addend, hit_data); 2280 return bfd_reloc_ok; 2281 2282 case R_SCORE_HI16: 2283 return bfd_reloc_ok; 2284 2285 case R_SCORE_LO16: 2286 hi16_addend = score_bfd_get_32 (input_bfd, hit_data - 4); 2287 hi16_offset = ((((hi16_addend >> 16) & 0x3) << 15) | (hi16_addend & 0x7fff)) >> 1; 2288 addend = score_bfd_get_32 (input_bfd, hit_data); 2289 offset = ((((addend >> 16) & 0x3) << 15) | (addend & 0x7fff)) >> 1; 2290 offset = (hi16_offset << 16) | (offset & 0xffff); 2291 2292 if (!gp_disp_p) 2293 uvalue = value + offset; 2294 else 2295 uvalue = offset + gp - rel_addr + 4; 2296 2297 hi16_offset = (uvalue >> 16) << 1; 2298 hi16_value = (hi16_addend & (~(howto->dst_mask))) 2299 | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000); 2300 score_bfd_put_32 (input_bfd, hi16_value, hit_data - 4); 2301 offset = (uvalue & 0xffff) << 1; 2302 value = (addend & (~(howto->dst_mask))) | (offset & 0x7fff) | ((offset << 1) & 0x30000); 2303 score_bfd_put_32 (input_bfd, value, hit_data); 2304 return bfd_reloc_ok; 2305 2306 case R_SCORE_GP15: 2307 addend = score_bfd_get_32 (input_bfd, hit_data); 2308 offset = addend & 0x7fff; 2309 if ((offset & 0x4000) == 0x4000) 2310 offset |= 0xffffc000; 2311 value = value + offset - gp; 2312 if (((value & 0xffffc000) != 0) && ((value & 0xffffc000) != 0xffffc000)) 2313 return bfd_reloc_overflow; 2314 value = (addend & ~howto->src_mask) | (value & howto->src_mask); 2315 score_bfd_put_32 (input_bfd, value, hit_data); 2316 return bfd_reloc_ok; 2317 2318 case R_SCORE_GOT15: 2319 case R_SCORE_CALL15: 2320 if (local_p) 2321 { 2322 bfd_boolean forced; 2323 2324 /* The special case is when the symbol is forced to be local. We need the 2325 full address in the GOT since no R_SCORE_GOT_LO16 relocation follows. */ 2326 forced = ! score_elf_local_relocation_p (input_bfd, rel, 2327 local_sections, FALSE); 2328 value = score_elf_got16_entry (output_bfd, input_bfd, info, 2329 symbol + addend, forced); 2330 if (value == MINUS_ONE) 2331 return bfd_reloc_outofrange; 2332 value = score_elf_got_offset_from_index (elf_hash_table (info)->dynobj, 2333 output_bfd, input_bfd, value); 2334 } 2335 else 2336 { 2337 value = g; 2338 } 2339 2340 if ((long) value > 0x3fff || (long) value < -0x4000) 2341 return bfd_reloc_overflow; 2342 2343 addend = score_bfd_get_32 (input_bfd, hit_data); 2344 value = (addend & ~howto->dst_mask) | (value & howto->dst_mask); 2345 score_bfd_put_32 (input_bfd, value, hit_data); 2346 return bfd_reloc_ok; 2347 2348 case R_SCORE_GPREL32: 2349 value = (addend + symbol - gp); 2350 value &= howto->dst_mask; 2351 score_bfd_put_32 (input_bfd, value, hit_data); 2352 return bfd_reloc_ok; 2353 2354 case R_SCORE_GOT_LO16: 2355 addend = score_bfd_get_32 (input_bfd, hit_data); 2356 value = (((addend >> 16) & 0x3) << 14) | ((addend & 0x7fff) >> 1); 2357 value += symbol; 2358 value = (addend & (~(howto->dst_mask))) | ((value & 0x3fff) << 1) 2359 | (((value >> 14) & 0x3) << 16); 2360 2361 score_bfd_put_32 (input_bfd, value, hit_data); 2362 return bfd_reloc_ok; 2363 2364 case R_SCORE_DUMMY_HI16: 2365 return bfd_reloc_ok; 2366 2367 case R_SCORE_GNU_VTINHERIT: 2368 case R_SCORE_GNU_VTENTRY: 2369 /* We don't do anything with these at present. */ 2370 return bfd_reloc_continue; 2371 2372 default: 2373 return bfd_reloc_notsupported; 2374 } 2375 } 2376 2377 /* Score backend functions. */ 2378 static void 2379 s3_bfd_score_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, 2380 arelent *bfd_reloc, 2381 Elf_Internal_Rela *elf_reloc) 2382 { 2383 unsigned int r_type; 2384 2385 r_type = ELF32_R_TYPE (elf_reloc->r_info); 2386 if (r_type >= ARRAY_SIZE (elf32_score_howto_table)) 2387 bfd_reloc->howto = NULL; 2388 else 2389 bfd_reloc->howto = &elf32_score_howto_table[r_type]; 2390 } 2391 2392 /* Relocate an score ELF section. */ 2393 static bfd_boolean 2394 s3_bfd_score_elf_relocate_section (bfd *output_bfd, 2395 struct bfd_link_info *info, 2396 bfd *input_bfd, 2397 asection *input_section, 2398 bfd_byte *contents, 2399 Elf_Internal_Rela *relocs, 2400 Elf_Internal_Sym *local_syms, 2401 asection **local_sections) 2402 { 2403 Elf_Internal_Shdr *symtab_hdr; 2404 Elf_Internal_Rela *rel; 2405 Elf_Internal_Rela *relend; 2406 const char *name; 2407 unsigned long offset; 2408 unsigned long hi16_addend, hi16_offset, hi16_value, uvalue; 2409 size_t extsymoff; 2410 bfd_boolean gp_disp_p = FALSE; 2411 2412 /* Sort dynsym. */ 2413 if (elf_hash_table (info)->dynamic_sections_created) 2414 { 2415 bfd_size_type dynsecsymcount = 0; 2416 if (info->shared) 2417 { 2418 asection * p; 2419 const struct elf_backend_data *bed = get_elf_backend_data (output_bfd); 2420 2421 for (p = output_bfd->sections; p ; p = p->next) 2422 if ((p->flags & SEC_EXCLUDE) == 0 2423 && (p->flags & SEC_ALLOC) != 0 2424 && !(*bed->elf_backend_omit_section_dynsym) (output_bfd, info, p)) 2425 ++ dynsecsymcount; 2426 } 2427 2428 if (!score_elf_sort_hash_table (info, dynsecsymcount + 1)) 2429 return FALSE; 2430 } 2431 2432 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 2433 extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info; 2434 rel = relocs; 2435 relend = relocs + input_section->reloc_count; 2436 for (; rel < relend; rel++) 2437 { 2438 int r_type; 2439 reloc_howto_type *howto; 2440 unsigned long r_symndx; 2441 Elf_Internal_Sym *sym; 2442 asection *sec; 2443 struct score_elf_link_hash_entry *h; 2444 bfd_vma relocation = 0; 2445 bfd_reloc_status_type r; 2446 arelent bfd_reloc; 2447 2448 r_symndx = ELF32_R_SYM (rel->r_info); 2449 r_type = ELF32_R_TYPE (rel->r_info); 2450 2451 s3_bfd_score_info_to_howto (input_bfd, &bfd_reloc, (Elf_Internal_Rela *) rel); 2452 howto = bfd_reloc.howto; 2453 2454 h = NULL; 2455 sym = NULL; 2456 sec = NULL; 2457 2458 if (r_symndx < extsymoff) 2459 { 2460 sym = local_syms + r_symndx; 2461 sec = local_sections[r_symndx]; 2462 relocation = (sec->output_section->vma 2463 + sec->output_offset 2464 + sym->st_value); 2465 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); 2466 2467 if (!info->relocatable 2468 && (sec->flags & SEC_MERGE) 2469 && ELF_ST_TYPE (sym->st_info) == STT_SECTION) 2470 { 2471 asection *msec; 2472 bfd_vma addend, value; 2473 2474 switch (r_type) 2475 { 2476 case R_SCORE_HI16: 2477 break; 2478 case R_SCORE_LO16: 2479 hi16_addend = score_bfd_get_32 (input_bfd, contents + rel->r_offset - 4); 2480 hi16_offset = ((((hi16_addend >> 16) & 0x3) << 15) | (hi16_addend & 0x7fff)) >> 1; 2481 value = score_bfd_get_32 (input_bfd, contents + rel->r_offset); 2482 offset = ((((value >> 16) & 0x3) << 15) | (value & 0x7fff)) >> 1; 2483 addend = (hi16_offset << 16) | (offset & 0xffff); 2484 msec = sec; 2485 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend); 2486 addend -= relocation; 2487 addend += msec->output_section->vma + msec->output_offset; 2488 uvalue = addend; 2489 hi16_offset = (uvalue >> 16) << 1; 2490 hi16_value = (hi16_addend & (~(howto->dst_mask))) 2491 | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000); 2492 score_bfd_put_32 (input_bfd, hi16_value, contents + rel->r_offset - 4); 2493 offset = (uvalue & 0xffff) << 1; 2494 value = (value & (~(howto->dst_mask))) 2495 | (offset & 0x7fff) | ((offset << 1) & 0x30000); 2496 score_bfd_put_32 (input_bfd, value, contents + rel->r_offset); 2497 break; 2498 2499 case R_SCORE_IMM32: 2500 { 2501 value = score_bfd_get_48 (input_bfd, contents + rel->r_offset); 2502 addend = ((value >> 5) & 0x3ff) 2503 | (((value >> 16) & 0x7fff) << 10) 2504 | (((value >> 32) & 0x7f) << 25); 2505 msec = sec; 2506 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend); 2507 addend -= relocation; 2508 addend += msec->output_section->vma + msec->output_offset; 2509 addend &= 0xffffffff; 2510 value = (value & ~howto->src_mask) 2511 | ((addend & 0x3ff) << 5) 2512 | (((addend >> 10) & 0x7fff) << 16) 2513 | (((addend >> 25) & 0x7f) << 32); 2514 score_bfd_put_48 (input_bfd, value, contents + rel->r_offset); 2515 break; 2516 } 2517 2518 case R_SCORE_IMM30: 2519 { 2520 int not_word_align_p = 0; 2521 value = score_bfd_get_48 (input_bfd, contents + rel->r_offset); 2522 addend = ((value >> 7) & 0xff) 2523 | (((value >> 16) & 0x7fff) << 8) 2524 | (((value >> 32) & 0x7f) << 23); 2525 addend <<= howto->rightshift; 2526 msec = sec; 2527 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend); 2528 addend -= relocation; 2529 addend += msec->output_section->vma + msec->output_offset; 2530 addend &= 0xffffffff; 2531 2532 /* Check lw48/sw48 rd, value/label word align. */ 2533 if ((addend & 0x3) != 0) 2534 not_word_align_p = 1; 2535 2536 addend >>= howto->rightshift; 2537 value = (value & ~howto->src_mask) 2538 | (((addend & 0xff) >> 0) << 7) 2539 | (((addend & 0x7fff00) >> 8) << 16) 2540 | (((addend & 0x3f800000) >> 23) << 32); 2541 score_bfd_put_48 (input_bfd, value, contents + rel->r_offset); 2542 2543 if (not_word_align_p) 2544 return bfd_reloc_other; 2545 else 2546 break; 2547 } 2548 2549 case R_SCORE_GOT_LO16: 2550 value = score_bfd_get_32 (input_bfd, contents + rel->r_offset); 2551 addend = (((value >> 16) & 0x3) << 14) | ((value & 0x7fff) >> 1); 2552 msec = sec; 2553 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) - relocation; 2554 addend += msec->output_section->vma + msec->output_offset; 2555 value = (value & (~(howto->dst_mask))) | ((addend & 0x3fff) << 1) 2556 | (((addend >> 14) & 0x3) << 16); 2557 2558 score_bfd_put_32 (input_bfd, value, contents + rel->r_offset); 2559 break; 2560 2561 case R_SCORE_ABS32: 2562 case R_SCORE_REL32: 2563 value = bfd_get_32 (input_bfd, contents + rel->r_offset); 2564 /* Get the (signed) value from the instruction. */ 2565 addend = value & howto->src_mask; 2566 if (addend & ((howto->src_mask + 1) >> 1)) 2567 { 2568 bfd_signed_vma mask; 2569 2570 mask = -1; 2571 mask &= ~howto->src_mask; 2572 addend |= mask; 2573 } 2574 msec = sec; 2575 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) - relocation; 2576 addend += msec->output_section->vma + msec->output_offset; 2577 value = (value & ~howto->dst_mask) | (addend & howto->dst_mask); 2578 bfd_put_32 (input_bfd, value, contents + rel->r_offset); 2579 break; 2580 2581 default: 2582 value = score_bfd_get_32 (input_bfd, contents + rel->r_offset); 2583 /* Get the (signed) value from the instruction. */ 2584 addend = value & howto->src_mask; 2585 if (addend & ((howto->src_mask + 1) >> 1)) 2586 { 2587 bfd_signed_vma mask; 2588 2589 mask = -1; 2590 mask &= ~howto->src_mask; 2591 addend |= mask; 2592 } 2593 msec = sec; 2594 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) - relocation; 2595 addend += msec->output_section->vma + msec->output_offset; 2596 value = (value & ~howto->dst_mask) | (addend & howto->dst_mask); 2597 score_bfd_put_32 (input_bfd, value, contents + rel->r_offset); 2598 break; 2599 } 2600 } 2601 } 2602 else 2603 { 2604 /* For global symbols we look up the symbol in the hash-table. */ 2605 h = ((struct score_elf_link_hash_entry *) 2606 elf_sym_hashes (input_bfd) [r_symndx - extsymoff]); 2607 2608 if (info->wrap_hash != NULL 2609 && (input_section->flags & SEC_DEBUGGING) != 0) 2610 h = ((struct score_elf_link_hash_entry *) 2611 unwrap_hash_lookup (info, input_bfd, &h->root.root)); 2612 2613 /* Find the real hash-table entry for this symbol. */ 2614 while (h->root.root.type == bfd_link_hash_indirect 2615 || h->root.root.type == bfd_link_hash_warning) 2616 h = (struct score_elf_link_hash_entry *) h->root.root.u.i.link; 2617 2618 /* Record the name of this symbol, for our caller. */ 2619 name = h->root.root.root.string; 2620 2621 /* See if this is the special GP_DISP_LABEL symbol. Note that such a 2622 symbol must always be a global symbol. */ 2623 if (strcmp (name, GP_DISP_LABEL) == 0) 2624 { 2625 /* Relocations against GP_DISP_LABEL are permitted only with 2626 R_SCORE_HI16 and R_SCORE_LO16 relocations. */ 2627 if (r_type != R_SCORE_HI16 && r_type != R_SCORE_LO16) 2628 return bfd_reloc_notsupported; 2629 2630 gp_disp_p = TRUE; 2631 } 2632 2633 /* If this symbol is defined, calculate its address. Note that 2634 GP_DISP_LABEL is a magic symbol, always implicitly defined by the 2635 linker, so it's inappropriate to check to see whether or not 2636 its defined. */ 2637 else if ((h->root.root.type == bfd_link_hash_defined 2638 || h->root.root.type == bfd_link_hash_defweak) 2639 && h->root.root.u.def.section) 2640 { 2641 sec = h->root.root.u.def.section; 2642 if (sec->output_section) 2643 relocation = (h->root.root.u.def.value 2644 + sec->output_section->vma 2645 + sec->output_offset); 2646 else 2647 { 2648 relocation = h->root.root.u.def.value; 2649 } 2650 } 2651 else if (h->root.root.type == bfd_link_hash_undefweak) 2652 /* We allow relocations against undefined weak symbols, giving 2653 it the value zero, so that you can undefined weak functions 2654 and check to see if they exist by looking at their addresses. */ 2655 relocation = 0; 2656 else if (info->unresolved_syms_in_objects == RM_IGNORE 2657 && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) 2658 relocation = 0; 2659 else if (strcmp (name, "_DYNAMIC_LINK") == 0) 2660 { 2661 /* If this is a dynamic link, we should have created a _DYNAMIC_LINK symbol 2662 in s3_bfd_score_elf_create_dynamic_sections. Otherwise, we should define 2663 the symbol with a value of 0. */ 2664 BFD_ASSERT (! info->shared); 2665 BFD_ASSERT (bfd_get_section_by_name (output_bfd, ".dynamic") == NULL); 2666 relocation = 0; 2667 } 2668 else if (!info->relocatable) 2669 { 2670 if (! ((*info->callbacks->undefined_symbol) 2671 (info, h->root.root.root.string, input_bfd, 2672 input_section, rel->r_offset, 2673 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR) 2674 || ELF_ST_VISIBILITY (h->root.other)))) 2675 return bfd_reloc_undefined; 2676 relocation = 0; 2677 } 2678 } 2679 2680 if (sec != NULL && discarded_section (sec)) 2681 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 2682 rel, 1, relend, howto, 0, contents); 2683 2684 if (info->relocatable) 2685 { 2686 /* This is a relocatable link. We don't have to change 2687 anything, unless the reloc is against a section symbol, 2688 in which case we have to adjust according to where the 2689 section symbol winds up in the output section. */ 2690 if (r_symndx < symtab_hdr->sh_info) 2691 { 2692 sym = local_syms + r_symndx; 2693 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) 2694 { 2695 sec = local_sections[r_symndx]; 2696 score_elf_add_to_rel (input_bfd, contents + rel->r_offset, 2697 howto, (bfd_signed_vma) (sec->output_offset + sym->st_value)); 2698 } 2699 } 2700 continue; 2701 } 2702 2703 /* This is a final link. */ 2704 r = score_elf_final_link_relocate (howto, input_bfd, output_bfd, 2705 input_section, contents, rel, relocs, 2706 relocation, info, name, 2707 (h ? ELF_ST_TYPE ((unsigned int)h->root.root.type) : 2708 ELF_ST_TYPE ((unsigned int)sym->st_info)), h, local_sections, 2709 gp_disp_p); 2710 2711 if (r != bfd_reloc_ok) 2712 { 2713 const char *msg = (const char *)0; 2714 2715 switch (r) 2716 { 2717 case bfd_reloc_overflow: 2718 /* If the overflowing reloc was to an undefined symbol, 2719 we have already printed one error message and there 2720 is no point complaining again. */ 2721 if (((!h) || (h->root.root.type != bfd_link_hash_undefined)) 2722 && (!((*info->callbacks->reloc_overflow) 2723 (info, NULL, name, howto->name, (bfd_vma) 0, 2724 input_bfd, input_section, rel->r_offset)))) 2725 return FALSE; 2726 break; 2727 case bfd_reloc_undefined: 2728 if (!((*info->callbacks->undefined_symbol) 2729 (info, name, input_bfd, input_section, rel->r_offset, TRUE))) 2730 return FALSE; 2731 break; 2732 2733 case bfd_reloc_outofrange: 2734 msg = _("internal error: out of range error"); 2735 goto common_error; 2736 2737 case bfd_reloc_notsupported: 2738 msg = _("internal error: unsupported relocation error"); 2739 goto common_error; 2740 2741 case bfd_reloc_dangerous: 2742 msg = _("internal error: dangerous error"); 2743 goto common_error; 2744 2745 /* Use bfd_reloc_other to check lw48, sw48 word align. */ 2746 case bfd_reloc_other: 2747 msg = _("address not word align"); 2748 goto common_error; 2749 2750 default: 2751 msg = _("internal error: unknown error"); 2752 /* fall through */ 2753 2754 common_error: 2755 if (!((*info->callbacks->warning) 2756 (info, msg, name, input_bfd, input_section, rel->r_offset))) 2757 return FALSE; 2758 break; 2759 } 2760 } 2761 } 2762 2763 return TRUE; 2764 } 2765 2766 /* Look through the relocs for a section during the first phase, and 2767 allocate space in the global offset table. */ 2768 static bfd_boolean 2769 s3_bfd_score_elf_check_relocs (bfd *abfd, 2770 struct bfd_link_info *info, 2771 asection *sec, 2772 const Elf_Internal_Rela *relocs) 2773 { 2774 const char *name; 2775 bfd *dynobj; 2776 Elf_Internal_Shdr *symtab_hdr; 2777 struct elf_link_hash_entry **sym_hashes; 2778 struct score_got_info *g; 2779 size_t extsymoff; 2780 const Elf_Internal_Rela *rel; 2781 const Elf_Internal_Rela *rel_end; 2782 asection *sgot; 2783 asection *sreloc; 2784 const struct elf_backend_data *bed; 2785 2786 if (info->relocatable) 2787 return TRUE; 2788 2789 dynobj = elf_hash_table (info)->dynobj; 2790 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 2791 sym_hashes = elf_sym_hashes (abfd); 2792 extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; 2793 2794 name = bfd_get_section_name (abfd, sec); 2795 2796 if (dynobj == NULL) 2797 { 2798 sgot = NULL; 2799 g = NULL; 2800 } 2801 else 2802 { 2803 sgot = score_elf_got_section (dynobj, FALSE); 2804 if (sgot == NULL) 2805 g = NULL; 2806 else 2807 { 2808 BFD_ASSERT (score_elf_section_data (sgot) != NULL); 2809 g = score_elf_section_data (sgot)->u.got_info; 2810 BFD_ASSERT (g != NULL); 2811 } 2812 } 2813 2814 sreloc = NULL; 2815 bed = get_elf_backend_data (abfd); 2816 rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel; 2817 for (rel = relocs; rel < rel_end; ++rel) 2818 { 2819 unsigned long r_symndx; 2820 unsigned int r_type; 2821 struct elf_link_hash_entry *h; 2822 2823 r_symndx = ELF32_R_SYM (rel->r_info); 2824 r_type = ELF32_R_TYPE (rel->r_info); 2825 2826 if (r_symndx < extsymoff) 2827 { 2828 h = NULL; 2829 } 2830 else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr)) 2831 { 2832 (*_bfd_error_handler) (_("%s: Malformed reloc detected for section %s"), abfd, name); 2833 bfd_set_error (bfd_error_bad_value); 2834 return FALSE; 2835 } 2836 else 2837 { 2838 h = sym_hashes[r_symndx - extsymoff]; 2839 2840 /* This may be an indirect symbol created because of a version. */ 2841 if (h != NULL) 2842 { 2843 while (h->root.type == bfd_link_hash_indirect) 2844 h = (struct elf_link_hash_entry *)h->root.u.i.link; 2845 2846 /* PR15323, ref flags aren't set for references in the 2847 same object. */ 2848 h->root.non_ir_ref = 1; 2849 } 2850 } 2851 2852 /* Some relocs require a global offset table. */ 2853 if (dynobj == NULL || sgot == NULL) 2854 { 2855 switch (r_type) 2856 { 2857 case R_SCORE_GOT15: 2858 case R_SCORE_CALL15: 2859 if (dynobj == NULL) 2860 elf_hash_table (info)->dynobj = dynobj = abfd; 2861 if (!score_elf_create_got_section (dynobj, info, FALSE)) 2862 return FALSE; 2863 g = score_elf_got_info (dynobj, &sgot); 2864 break; 2865 case R_SCORE_ABS32: 2866 case R_SCORE_REL32: 2867 if (dynobj == NULL && (info->shared || h != NULL) && (sec->flags & SEC_ALLOC) != 0) 2868 elf_hash_table (info)->dynobj = dynobj = abfd; 2869 break; 2870 default: 2871 break; 2872 } 2873 } 2874 2875 if (!h && (r_type == R_SCORE_GOT_LO16)) 2876 { 2877 if (! score_elf_record_local_got_symbol (abfd, r_symndx, rel->r_addend, g)) 2878 return FALSE; 2879 } 2880 2881 switch (r_type) 2882 { 2883 case R_SCORE_CALL15: 2884 if (h == NULL) 2885 { 2886 (*_bfd_error_handler) 2887 (_("%B: CALL15 reloc at 0x%lx not against global symbol"), 2888 abfd, (unsigned long) rel->r_offset); 2889 bfd_set_error (bfd_error_bad_value); 2890 return FALSE; 2891 } 2892 else 2893 { 2894 /* This symbol requires a global offset table entry. */ 2895 if (! score_elf_record_global_got_symbol (h, abfd, info, g)) 2896 return FALSE; 2897 2898 /* We need a stub, not a plt entry for the undefined function. But we record 2899 it as if it needs plt. See _bfd_elf_adjust_dynamic_symbol. */ 2900 h->needs_plt = 1; 2901 h->type = STT_FUNC; 2902 } 2903 break; 2904 case R_SCORE_GOT15: 2905 if (h && ! score_elf_record_global_got_symbol (h, abfd, info, g)) 2906 return FALSE; 2907 break; 2908 case R_SCORE_ABS32: 2909 case R_SCORE_REL32: 2910 if ((info->shared || h != NULL) && (sec->flags & SEC_ALLOC) != 0) 2911 { 2912 if (sreloc == NULL) 2913 { 2914 sreloc = score_elf_rel_dyn_section (dynobj, TRUE); 2915 if (sreloc == NULL) 2916 return FALSE; 2917 } 2918 #define SCORE_READONLY_SECTION (SEC_ALLOC | SEC_LOAD | SEC_READONLY) 2919 if (info->shared) 2920 { 2921 /* When creating a shared object, we must copy these reloc types into 2922 the output file as R_SCORE_REL32 relocs. We make room for this reloc 2923 in the .rel.dyn reloc section. */ 2924 score_elf_allocate_dynamic_relocations (dynobj, 1); 2925 if ((sec->flags & SCORE_READONLY_SECTION) 2926 == SCORE_READONLY_SECTION) 2927 /* We tell the dynamic linker that there are 2928 relocations against the text segment. */ 2929 info->flags |= DF_TEXTREL; 2930 } 2931 else 2932 { 2933 struct score_elf_link_hash_entry *hscore; 2934 2935 /* We only need to copy this reloc if the symbol is 2936 defined in a dynamic object. */ 2937 hscore = (struct score_elf_link_hash_entry *)h; 2938 ++hscore->possibly_dynamic_relocs; 2939 if ((sec->flags & SCORE_READONLY_SECTION) 2940 == SCORE_READONLY_SECTION) 2941 /* We need it to tell the dynamic linker if there 2942 are relocations against the text segment. */ 2943 hscore->readonly_reloc = TRUE; 2944 } 2945 2946 /* Even though we don't directly need a GOT entry for this symbol, 2947 a symbol must have a dynamic symbol table index greater that 2948 DT_SCORE_GOTSYM if there are dynamic relocations against it. */ 2949 if (h != NULL) 2950 { 2951 if (dynobj == NULL) 2952 elf_hash_table (info)->dynobj = dynobj = abfd; 2953 if (! score_elf_create_got_section (dynobj, info, TRUE)) 2954 return FALSE; 2955 g = score_elf_got_info (dynobj, &sgot); 2956 if (! score_elf_record_global_got_symbol (h, abfd, info, g)) 2957 return FALSE; 2958 } 2959 } 2960 break; 2961 2962 /* This relocation describes the C++ object vtable hierarchy. 2963 Reconstruct it for later use during GC. */ 2964 case R_SCORE_GNU_VTINHERIT: 2965 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 2966 return FALSE; 2967 break; 2968 2969 /* This relocation describes which C++ vtable entries are actually 2970 used. Record for later use during GC. */ 2971 case R_SCORE_GNU_VTENTRY: 2972 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) 2973 return FALSE; 2974 break; 2975 default: 2976 break; 2977 } 2978 2979 /* We must not create a stub for a symbol that has relocations 2980 related to taking the function's address. */ 2981 switch (r_type) 2982 { 2983 default: 2984 if (h != NULL) 2985 { 2986 struct score_elf_link_hash_entry *sh; 2987 2988 sh = (struct score_elf_link_hash_entry *) h; 2989 sh->no_fn_stub = TRUE; 2990 } 2991 break; 2992 case R_SCORE_CALL15: 2993 break; 2994 } 2995 } 2996 2997 return TRUE; 2998 } 2999 3000 static bfd_boolean 3001 s3_bfd_score_elf_add_symbol_hook (bfd *abfd, 3002 struct bfd_link_info *info ATTRIBUTE_UNUSED, 3003 Elf_Internal_Sym *sym, 3004 const char **namep ATTRIBUTE_UNUSED, 3005 flagword *flagsp ATTRIBUTE_UNUSED, 3006 asection **secp, 3007 bfd_vma *valp) 3008 { 3009 switch (sym->st_shndx) 3010 { 3011 case SHN_COMMON: 3012 if (sym->st_size > elf_gp_size (abfd)) 3013 break; 3014 /* Fall through. */ 3015 case SHN_SCORE_SCOMMON: 3016 *secp = bfd_make_section_old_way (abfd, ".scommon"); 3017 (*secp)->flags |= SEC_IS_COMMON; 3018 *valp = sym->st_size; 3019 break; 3020 } 3021 3022 return TRUE; 3023 } 3024 3025 static void 3026 s3_bfd_score_elf_symbol_processing (bfd *abfd, asymbol *asym) 3027 { 3028 elf_symbol_type *elfsym; 3029 3030 elfsym = (elf_symbol_type *) asym; 3031 switch (elfsym->internal_elf_sym.st_shndx) 3032 { 3033 case SHN_COMMON: 3034 if (asym->value > elf_gp_size (abfd)) 3035 break; 3036 /* Fall through. */ 3037 case SHN_SCORE_SCOMMON: 3038 if (score_elf_scom_section.name == NULL) 3039 { 3040 /* Initialize the small common section. */ 3041 score_elf_scom_section.name = ".scommon"; 3042 score_elf_scom_section.flags = SEC_IS_COMMON; 3043 score_elf_scom_section.output_section = &score_elf_scom_section; 3044 score_elf_scom_section.symbol = &score_elf_scom_symbol; 3045 score_elf_scom_section.symbol_ptr_ptr = &score_elf_scom_symbol_ptr; 3046 score_elf_scom_symbol.name = ".scommon"; 3047 score_elf_scom_symbol.flags = BSF_SECTION_SYM; 3048 score_elf_scom_symbol.section = &score_elf_scom_section; 3049 score_elf_scom_symbol_ptr = &score_elf_scom_symbol; 3050 } 3051 asym->section = &score_elf_scom_section; 3052 asym->value = elfsym->internal_elf_sym.st_size; 3053 break; 3054 } 3055 } 3056 3057 static int 3058 s3_bfd_score_elf_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED, 3059 const char *name ATTRIBUTE_UNUSED, 3060 Elf_Internal_Sym *sym, 3061 asection *input_sec, 3062 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) 3063 { 3064 /* If we see a common symbol, which implies a relocatable link, then 3065 if a symbol was small common in an input file, mark it as small 3066 common in the output file. */ 3067 if (sym->st_shndx == SHN_COMMON && strcmp (input_sec->name, ".scommon") == 0) 3068 sym->st_shndx = SHN_SCORE_SCOMMON; 3069 3070 return 1; 3071 } 3072 3073 static bfd_boolean 3074 s3_bfd_score_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, 3075 asection *sec, 3076 int *retval) 3077 { 3078 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) 3079 { 3080 *retval = SHN_SCORE_SCOMMON; 3081 return TRUE; 3082 } 3083 3084 return FALSE; 3085 } 3086 3087 /* Adjust a symbol defined by a dynamic object and referenced by a 3088 regular object. The current definition is in some section of the 3089 dynamic object, but we're not including those sections. We have to 3090 change the definition to something the rest of the link can understand. */ 3091 static bfd_boolean 3092 s3_bfd_score_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 3093 struct elf_link_hash_entry *h) 3094 { 3095 bfd *dynobj; 3096 struct score_elf_link_hash_entry *hscore; 3097 asection *s; 3098 3099 dynobj = elf_hash_table (info)->dynobj; 3100 3101 /* Make sure we know what is going on here. */ 3102 BFD_ASSERT (dynobj != NULL 3103 && (h->needs_plt 3104 || h->u.weakdef != NULL 3105 || (h->def_dynamic && h->ref_regular && !h->def_regular))); 3106 3107 /* If this symbol is defined in a dynamic object, we need to copy 3108 any R_SCORE_ABS32 or R_SCORE_REL32 relocs against it into the output 3109 file. */ 3110 hscore = (struct score_elf_link_hash_entry *)h; 3111 if (!info->relocatable 3112 && hscore->possibly_dynamic_relocs != 0 3113 && (h->root.type == bfd_link_hash_defweak || !h->def_regular)) 3114 { 3115 score_elf_allocate_dynamic_relocations (dynobj, hscore->possibly_dynamic_relocs); 3116 if (hscore->readonly_reloc) 3117 /* We tell the dynamic linker that there are relocations 3118 against the text segment. */ 3119 info->flags |= DF_TEXTREL; 3120 } 3121 3122 /* For a function, create a stub, if allowed. */ 3123 if (!hscore->no_fn_stub && h->needs_plt) 3124 { 3125 if (!elf_hash_table (info)->dynamic_sections_created) 3126 return TRUE; 3127 3128 /* If this symbol is not defined in a regular file, then set 3129 the symbol to the stub location. This is required to make 3130 function pointers compare as equal between the normal 3131 executable and the shared library. */ 3132 if (!h->def_regular) 3133 { 3134 /* We need .stub section. */ 3135 s = bfd_get_linker_section (dynobj, SCORE_ELF_STUB_SECTION_NAME); 3136 BFD_ASSERT (s != NULL); 3137 3138 h->root.u.def.section = s; 3139 h->root.u.def.value = s->size; 3140 3141 /* XXX Write this stub address somewhere. */ 3142 h->plt.offset = s->size; 3143 3144 /* Make room for this stub code. */ 3145 s->size += SCORE_FUNCTION_STUB_SIZE; 3146 3147 /* The last half word of the stub will be filled with the index 3148 of this symbol in .dynsym section. */ 3149 return TRUE; 3150 } 3151 } 3152 else if ((h->type == STT_FUNC) && !h->needs_plt) 3153 { 3154 /* This will set the entry for this symbol in the GOT to 0, and 3155 the dynamic linker will take care of this. */ 3156 h->root.u.def.value = 0; 3157 return TRUE; 3158 } 3159 3160 /* If this is a weak symbol, and there is a real definition, the 3161 processor independent code will have arranged for us to see the 3162 real definition first, and we can just use the same value. */ 3163 if (h->u.weakdef != NULL) 3164 { 3165 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 3166 || h->u.weakdef->root.type == bfd_link_hash_defweak); 3167 h->root.u.def.section = h->u.weakdef->root.u.def.section; 3168 h->root.u.def.value = h->u.weakdef->root.u.def.value; 3169 return TRUE; 3170 } 3171 3172 /* This is a reference to a symbol defined by a dynamic object which 3173 is not a function. */ 3174 return TRUE; 3175 } 3176 3177 /* This function is called after all the input files have been read, 3178 and the input sections have been assigned to output sections. */ 3179 static bfd_boolean 3180 s3_bfd_score_elf_always_size_sections (bfd *output_bfd, 3181 struct bfd_link_info *info) 3182 { 3183 bfd *dynobj; 3184 asection *s; 3185 struct score_got_info *g; 3186 int i; 3187 bfd_size_type loadable_size = 0; 3188 bfd_size_type local_gotno; 3189 bfd *sub; 3190 3191 dynobj = elf_hash_table (info)->dynobj; 3192 if (dynobj == NULL) 3193 /* Relocatable links don't have it. */ 3194 return TRUE; 3195 3196 g = score_elf_got_info (dynobj, &s); 3197 if (s == NULL) 3198 return TRUE; 3199 3200 /* Calculate the total loadable size of the output. That will give us the 3201 maximum number of GOT_PAGE entries required. */ 3202 for (sub = info->input_bfds; sub; sub = sub->link.next) 3203 { 3204 asection *subsection; 3205 3206 for (subsection = sub->sections; 3207 subsection; 3208 subsection = subsection->next) 3209 { 3210 if ((subsection->flags & SEC_ALLOC) == 0) 3211 continue; 3212 loadable_size += ((subsection->size + 0xf) 3213 &~ (bfd_size_type) 0xf); 3214 } 3215 } 3216 3217 /* There has to be a global GOT entry for every symbol with 3218 a dynamic symbol table index of DT_SCORE_GOTSYM or 3219 higher. Therefore, it make sense to put those symbols 3220 that need GOT entries at the end of the symbol table. We 3221 do that here. */ 3222 if (! score_elf_sort_hash_table (info, 1)) 3223 return FALSE; 3224 3225 if (g->global_gotsym != NULL) 3226 i = elf_hash_table (info)->dynsymcount - g->global_gotsym->dynindx; 3227 else 3228 /* If there are no global symbols, or none requiring 3229 relocations, then GLOBAL_GOTSYM will be NULL. */ 3230 i = 0; 3231 3232 /* In the worst case, we'll get one stub per dynamic symbol. */ 3233 loadable_size += SCORE_FUNCTION_STUB_SIZE * i; 3234 3235 /* Assume there are two loadable segments consisting of 3236 contiguous sections. Is 5 enough? */ 3237 local_gotno = (loadable_size >> 16) + 5; 3238 3239 g->local_gotno += local_gotno; 3240 s->size += g->local_gotno * SCORE_ELF_GOT_SIZE (output_bfd); 3241 3242 g->global_gotno = i; 3243 s->size += i * SCORE_ELF_GOT_SIZE (output_bfd); 3244 3245 score_elf_resolve_final_got_entries (g); 3246 3247 if (s->size > SCORE_ELF_GOT_MAX_SIZE (output_bfd)) 3248 { 3249 /* Fixme. Error message or Warning message should be issued here. */ 3250 } 3251 3252 return TRUE; 3253 } 3254 3255 /* Set the sizes of the dynamic sections. */ 3256 static bfd_boolean 3257 s3_bfd_score_elf_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) 3258 { 3259 bfd *dynobj; 3260 asection *s; 3261 bfd_boolean reltext; 3262 3263 dynobj = elf_hash_table (info)->dynobj; 3264 BFD_ASSERT (dynobj != NULL); 3265 3266 if (elf_hash_table (info)->dynamic_sections_created) 3267 { 3268 /* Set the contents of the .interp section to the interpreter. */ 3269 if (!info->shared) 3270 { 3271 s = bfd_get_linker_section (dynobj, ".interp"); 3272 BFD_ASSERT (s != NULL); 3273 s->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1; 3274 s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; 3275 } 3276 } 3277 3278 /* The check_relocs and adjust_dynamic_symbol entry points have 3279 determined the sizes of the various dynamic sections. Allocate 3280 memory for them. */ 3281 reltext = FALSE; 3282 for (s = dynobj->sections; s != NULL; s = s->next) 3283 { 3284 const char *name; 3285 3286 if ((s->flags & SEC_LINKER_CREATED) == 0) 3287 continue; 3288 3289 /* It's OK to base decisions on the section name, because none 3290 of the dynobj section names depend upon the input files. */ 3291 name = bfd_get_section_name (dynobj, s); 3292 3293 if (CONST_STRNEQ (name, ".rel")) 3294 { 3295 if (s->size == 0) 3296 { 3297 /* We only strip the section if the output section name 3298 has the same name. Otherwise, there might be several 3299 input sections for this output section. FIXME: This 3300 code is probably not needed these days anyhow, since 3301 the linker now does not create empty output sections. */ 3302 if (s->output_section != NULL 3303 && strcmp (name, 3304 bfd_get_section_name (s->output_section->owner, 3305 s->output_section)) == 0) 3306 s->flags |= SEC_EXCLUDE; 3307 } 3308 else 3309 { 3310 const char *outname; 3311 asection *target; 3312 3313 /* If this relocation section applies to a read only 3314 section, then we probably need a DT_TEXTREL entry. 3315 If the relocation section is .rel.dyn, we always 3316 assert a DT_TEXTREL entry rather than testing whether 3317 there exists a relocation to a read only section or 3318 not. */ 3319 outname = bfd_get_section_name (output_bfd, s->output_section); 3320 target = bfd_get_section_by_name (output_bfd, outname + 4); 3321 if ((target != NULL 3322 && (target->flags & SEC_READONLY) != 0 3323 && (target->flags & SEC_ALLOC) != 0) || strcmp (outname, ".rel.dyn") == 0) 3324 reltext = TRUE; 3325 3326 /* We use the reloc_count field as a counter if we need 3327 to copy relocs into the output file. */ 3328 if (strcmp (name, ".rel.dyn") != 0) 3329 s->reloc_count = 0; 3330 } 3331 } 3332 else if (CONST_STRNEQ (name, ".got")) 3333 { 3334 /* s3_bfd_score_elf_always_size_sections() has already done 3335 most of the work, but some symbols may have been mapped 3336 to versions that we must now resolve in the got_entries 3337 hash tables. */ 3338 } 3339 else if (strcmp (name, SCORE_ELF_STUB_SECTION_NAME) == 0) 3340 { 3341 /* IRIX rld assumes that the function stub isn't at the end 3342 of .text section. So put a dummy. XXX */ 3343 s->size += SCORE_FUNCTION_STUB_SIZE; 3344 } 3345 else if (! CONST_STRNEQ (name, ".init")) 3346 { 3347 /* It's not one of our sections, so don't allocate space. */ 3348 continue; 3349 } 3350 3351 /* Allocate memory for the section contents. */ 3352 s->contents = bfd_zalloc (dynobj, s->size); 3353 if (s->contents == NULL && s->size != 0) 3354 { 3355 bfd_set_error (bfd_error_no_memory); 3356 return FALSE; 3357 } 3358 } 3359 3360 if (elf_hash_table (info)->dynamic_sections_created) 3361 { 3362 /* Add some entries to the .dynamic section. We fill in the 3363 values later, in s3_bfd_score_elf_finish_dynamic_sections, but we 3364 must add the entries now so that we get the correct size for 3365 the .dynamic section. The DT_DEBUG entry is filled in by the 3366 dynamic linker and used by the debugger. */ 3367 3368 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0)) 3369 return FALSE; 3370 3371 if (reltext) 3372 info->flags |= DF_TEXTREL; 3373 3374 if ((info->flags & DF_TEXTREL) != 0) 3375 { 3376 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0)) 3377 return FALSE; 3378 } 3379 3380 if (! SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0)) 3381 return FALSE; 3382 3383 if (score_elf_rel_dyn_section (dynobj, FALSE)) 3384 { 3385 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0)) 3386 return FALSE; 3387 3388 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0)) 3389 return FALSE; 3390 3391 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0)) 3392 return FALSE; 3393 } 3394 3395 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_BASE_ADDRESS, 0)) 3396 return FALSE; 3397 3398 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_LOCAL_GOTNO, 0)) 3399 return FALSE; 3400 3401 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_SYMTABNO, 0)) 3402 return FALSE; 3403 3404 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_UNREFEXTNO, 0)) 3405 return FALSE; 3406 3407 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_GOTSYM, 0)) 3408 return FALSE; 3409 3410 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_HIPAGENO, 0)) 3411 return FALSE; 3412 } 3413 3414 return TRUE; 3415 } 3416 3417 static bfd_boolean 3418 s3_bfd_score_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 3419 { 3420 struct elf_link_hash_entry *h; 3421 struct bfd_link_hash_entry *bh; 3422 flagword flags; 3423 asection *s; 3424 3425 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 3426 | SEC_LINKER_CREATED | SEC_READONLY); 3427 3428 /* ABI requests the .dynamic section to be read only. */ 3429 s = bfd_get_linker_section (abfd, ".dynamic"); 3430 if (s != NULL) 3431 { 3432 if (!bfd_set_section_flags (abfd, s, flags)) 3433 return FALSE; 3434 } 3435 3436 /* We need to create .got section. */ 3437 if (!score_elf_create_got_section (abfd, info, FALSE)) 3438 return FALSE; 3439 3440 if (!score_elf_rel_dyn_section (elf_hash_table (info)->dynobj, TRUE)) 3441 return FALSE; 3442 3443 /* Create .stub section. */ 3444 if (bfd_get_linker_section (abfd, SCORE_ELF_STUB_SECTION_NAME) == NULL) 3445 { 3446 s = bfd_make_section_anyway_with_flags (abfd, SCORE_ELF_STUB_SECTION_NAME, 3447 flags | SEC_CODE); 3448 if (s == NULL 3449 || !bfd_set_section_alignment (abfd, s, 2)) 3450 3451 return FALSE; 3452 } 3453 3454 if (!info->shared) 3455 { 3456 const char *name; 3457 3458 name = "_DYNAMIC_LINK"; 3459 bh = NULL; 3460 if (!(_bfd_generic_link_add_one_symbol 3461 (info, abfd, name, BSF_GLOBAL, bfd_abs_section_ptr, 3462 (bfd_vma) 0, NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) 3463 return FALSE; 3464 3465 h = (struct elf_link_hash_entry *)bh; 3466 h->non_elf = 0; 3467 h->def_regular = 1; 3468 h->type = STT_SECTION; 3469 3470 if (!bfd_elf_link_record_dynamic_symbol (info, h)) 3471 return FALSE; 3472 } 3473 3474 return TRUE; 3475 } 3476 3477 3478 /* Finish up dynamic symbol handling. We set the contents of various 3479 dynamic sections here. */ 3480 static bfd_boolean 3481 s3_bfd_score_elf_finish_dynamic_symbol (bfd *output_bfd, 3482 struct bfd_link_info *info, 3483 struct elf_link_hash_entry *h, 3484 Elf_Internal_Sym *sym) 3485 { 3486 bfd *dynobj; 3487 asection *sgot; 3488 struct score_got_info *g; 3489 const char *name; 3490 3491 dynobj = elf_hash_table (info)->dynobj; 3492 3493 if (h->plt.offset != MINUS_ONE) 3494 { 3495 asection *s; 3496 bfd_byte stub[SCORE_FUNCTION_STUB_SIZE]; 3497 3498 /* This symbol has a stub. Set it up. */ 3499 BFD_ASSERT (h->dynindx != -1); 3500 3501 s = bfd_get_linker_section (dynobj, SCORE_ELF_STUB_SECTION_NAME); 3502 BFD_ASSERT (s != NULL); 3503 3504 /* FIXME: Can h->dynindex be more than 64K? */ 3505 if (h->dynindx & 0xffff0000) 3506 return FALSE; 3507 3508 /* Fill the stub. */ 3509 score_bfd_put_32 (output_bfd, STUB_LW, stub); 3510 score_bfd_put_32 (output_bfd, STUB_MOVE, stub + 4); 3511 score_bfd_put_32 (output_bfd, STUB_LI16 | (h->dynindx << 1), stub + 8); 3512 score_bfd_put_32 (output_bfd, STUB_BRL, stub + 12); 3513 3514 BFD_ASSERT (h->plt.offset <= s->size); 3515 memcpy (s->contents + h->plt.offset, stub, SCORE_FUNCTION_STUB_SIZE); 3516 3517 /* Mark the symbol as undefined. plt.offset != -1 occurs 3518 only for the referenced symbol. */ 3519 sym->st_shndx = SHN_UNDEF; 3520 3521 /* The run-time linker uses the st_value field of the symbol 3522 to reset the global offset table entry for this external 3523 to its stub address when unlinking a shared object. */ 3524 sym->st_value = (s->output_section->vma + s->output_offset + h->plt.offset); 3525 } 3526 3527 BFD_ASSERT (h->dynindx != -1 || h->forced_local); 3528 3529 sgot = score_elf_got_section (dynobj, FALSE); 3530 BFD_ASSERT (sgot != NULL); 3531 BFD_ASSERT (score_elf_section_data (sgot) != NULL); 3532 g = score_elf_section_data (sgot)->u.got_info; 3533 BFD_ASSERT (g != NULL); 3534 3535 /* Run through the global symbol table, creating GOT entries for all 3536 the symbols that need them. */ 3537 if (g->global_gotsym != NULL && h->dynindx >= g->global_gotsym->dynindx) 3538 { 3539 bfd_vma offset; 3540 bfd_vma value; 3541 3542 value = sym->st_value; 3543 offset = score_elf_global_got_index (dynobj, h); 3544 score_bfd_put_32 (output_bfd, value, sgot->contents + offset); 3545 } 3546 3547 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ 3548 name = h->root.root.string; 3549 if (h == elf_hash_table (info)->hdynamic 3550 || h == elf_hash_table (info)->hgot) 3551 sym->st_shndx = SHN_ABS; 3552 else if (strcmp (name, "_DYNAMIC_LINK") == 0) 3553 { 3554 sym->st_shndx = SHN_ABS; 3555 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); 3556 sym->st_value = 1; 3557 } 3558 else if (strcmp (name, GP_DISP_LABEL) == 0) 3559 { 3560 sym->st_shndx = SHN_ABS; 3561 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); 3562 sym->st_value = elf_gp (output_bfd); 3563 } 3564 3565 return TRUE; 3566 } 3567 3568 /* Finish up the dynamic sections. */ 3569 static bfd_boolean 3570 s3_bfd_score_elf_finish_dynamic_sections (bfd *output_bfd, 3571 struct bfd_link_info *info) 3572 { 3573 bfd *dynobj; 3574 asection *sdyn; 3575 asection *sgot; 3576 asection *s; 3577 struct score_got_info *g; 3578 3579 dynobj = elf_hash_table (info)->dynobj; 3580 3581 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 3582 3583 sgot = score_elf_got_section (dynobj, FALSE); 3584 if (sgot == NULL) 3585 g = NULL; 3586 else 3587 { 3588 BFD_ASSERT (score_elf_section_data (sgot) != NULL); 3589 g = score_elf_section_data (sgot)->u.got_info; 3590 BFD_ASSERT (g != NULL); 3591 } 3592 3593 if (elf_hash_table (info)->dynamic_sections_created) 3594 { 3595 bfd_byte *b; 3596 3597 BFD_ASSERT (sdyn != NULL); 3598 BFD_ASSERT (g != NULL); 3599 3600 for (b = sdyn->contents; 3601 b < sdyn->contents + sdyn->size; 3602 b += SCORE_ELF_DYN_SIZE (dynobj)) 3603 { 3604 Elf_Internal_Dyn dyn; 3605 const char *name; 3606 size_t elemsize; 3607 bfd_boolean swap_out_p; 3608 3609 /* Read in the current dynamic entry. */ 3610 (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); 3611 3612 /* Assume that we're going to modify it and write it out. */ 3613 swap_out_p = TRUE; 3614 3615 switch (dyn.d_tag) 3616 { 3617 case DT_RELENT: 3618 s = score_elf_rel_dyn_section (dynobj, FALSE); 3619 BFD_ASSERT (s != NULL); 3620 dyn.d_un.d_val = SCORE_ELF_REL_SIZE (dynobj); 3621 break; 3622 3623 case DT_STRSZ: 3624 /* Rewrite DT_STRSZ. */ 3625 dyn.d_un.d_val = _bfd_elf_strtab_size (elf_hash_table (info)->dynstr); 3626 break; 3627 3628 case DT_PLTGOT: 3629 name = ".got"; 3630 s = bfd_get_section_by_name (output_bfd, name); 3631 BFD_ASSERT (s != NULL); 3632 dyn.d_un.d_ptr = s->vma; 3633 break; 3634 3635 case DT_SCORE_BASE_ADDRESS: 3636 s = output_bfd->sections; 3637 BFD_ASSERT (s != NULL); 3638 dyn.d_un.d_ptr = s->vma & ~(bfd_vma) 0xffff; 3639 break; 3640 3641 case DT_SCORE_LOCAL_GOTNO: 3642 dyn.d_un.d_val = g->local_gotno; 3643 break; 3644 3645 case DT_SCORE_UNREFEXTNO: 3646 /* The index into the dynamic symbol table which is the 3647 entry of the first external symbol that is not 3648 referenced within the same object. */ 3649 dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1; 3650 break; 3651 3652 case DT_SCORE_GOTSYM: 3653 if (g->global_gotsym) 3654 { 3655 dyn.d_un.d_val = g->global_gotsym->dynindx; 3656 break; 3657 } 3658 /* In case if we don't have global got symbols we default 3659 to setting DT_SCORE_GOTSYM to the same value as 3660 DT_SCORE_SYMTABNO, so we just fall through. */ 3661 3662 case DT_SCORE_SYMTABNO: 3663 name = ".dynsym"; 3664 elemsize = SCORE_ELF_SYM_SIZE (output_bfd); 3665 s = bfd_get_section_by_name (output_bfd, name); 3666 BFD_ASSERT (s != NULL); 3667 3668 dyn.d_un.d_val = s->size / elemsize; 3669 break; 3670 3671 case DT_SCORE_HIPAGENO: 3672 dyn.d_un.d_val = g->local_gotno - SCORE_RESERVED_GOTNO; 3673 break; 3674 3675 default: 3676 swap_out_p = FALSE; 3677 break; 3678 } 3679 3680 if (swap_out_p) 3681 (*get_elf_backend_data (dynobj)->s->swap_dyn_out) (dynobj, &dyn, b); 3682 } 3683 } 3684 3685 /* The first entry of the global offset table will be filled at 3686 runtime. The second entry will be used by some runtime loaders. 3687 This isn't the case of IRIX rld. */ 3688 if (sgot != NULL && sgot->size > 0) 3689 { 3690 score_bfd_put_32 (output_bfd, 0, sgot->contents); 3691 score_bfd_put_32 (output_bfd, 0x80000000, sgot->contents + SCORE_ELF_GOT_SIZE (output_bfd)); 3692 } 3693 3694 if (sgot != NULL) 3695 elf_section_data (sgot->output_section)->this_hdr.sh_entsize 3696 = SCORE_ELF_GOT_SIZE (output_bfd); 3697 3698 3699 /* We need to sort the entries of the dynamic relocation section. */ 3700 s = score_elf_rel_dyn_section (dynobj, FALSE); 3701 3702 if (s != NULL && s->size > (bfd_vma)2 * SCORE_ELF_REL_SIZE (output_bfd)) 3703 { 3704 reldyn_sorting_bfd = output_bfd; 3705 qsort ((Elf32_External_Rel *) s->contents + 1, s->reloc_count - 1, 3706 sizeof (Elf32_External_Rel), score_elf_sort_dynamic_relocs); 3707 } 3708 3709 return TRUE; 3710 } 3711 3712 /* This function set up the ELF section header for a BFD section in preparation for writing 3713 it out. This is where the flags and type fields are set for unusual sections. */ 3714 static bfd_boolean 3715 s3_bfd_score_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, 3716 Elf_Internal_Shdr *hdr, 3717 asection *sec) 3718 { 3719 const char *name; 3720 3721 name = bfd_get_section_name (abfd, sec); 3722 3723 if (strcmp (name, ".got") == 0 3724 || strcmp (name, ".srdata") == 0 3725 || strcmp (name, ".sdata") == 0 3726 || strcmp (name, ".sbss") == 0) 3727 hdr->sh_flags |= SHF_SCORE_GPREL; 3728 3729 return TRUE; 3730 } 3731 3732 /* This function do additional processing on the ELF section header before writing 3733 it out. This is used to set the flags and type fields for some sections. */ 3734 3735 /* assign_file_positions_except_relocs() check section flag and if it is allocatable, 3736 warning message will be issued. backend_fake_section is called before 3737 assign_file_positions_except_relocs(); backend_section_processing after it. so, we 3738 modify section flag there, but not backend_fake_section. */ 3739 static bfd_boolean 3740 s3_bfd_score_elf_section_processing (bfd *abfd ATTRIBUTE_UNUSED, Elf_Internal_Shdr *hdr) 3741 { 3742 if (hdr->bfd_section != NULL) 3743 { 3744 const char *name = bfd_get_section_name (abfd, hdr->bfd_section); 3745 3746 if (strcmp (name, ".sdata") == 0) 3747 { 3748 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_SCORE_GPREL; 3749 hdr->sh_type = SHT_PROGBITS; 3750 } 3751 else if (strcmp (name, ".sbss") == 0) 3752 { 3753 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_SCORE_GPREL; 3754 hdr->sh_type = SHT_NOBITS; 3755 } 3756 else if (strcmp (name, ".srdata") == 0) 3757 { 3758 hdr->sh_flags |= SHF_ALLOC | SHF_SCORE_GPREL; 3759 hdr->sh_type = SHT_PROGBITS; 3760 } 3761 } 3762 3763 return TRUE; 3764 } 3765 3766 static bfd_boolean 3767 s3_bfd_score_elf_write_section (bfd *output_bfd, asection *sec, bfd_byte *contents) 3768 { 3769 bfd_byte *to, *from, *end; 3770 int i; 3771 3772 if (strcmp (sec->name, ".pdr") != 0) 3773 return FALSE; 3774 3775 if (score_elf_section_data (sec)->u.tdata == NULL) 3776 return FALSE; 3777 3778 to = contents; 3779 end = contents + sec->size; 3780 for (from = contents, i = 0; from < end; from += PDR_SIZE, i++) 3781 { 3782 if ((score_elf_section_data (sec)->u.tdata)[i] == 1) 3783 continue; 3784 3785 if (to != from) 3786 memcpy (to, from, PDR_SIZE); 3787 3788 to += PDR_SIZE; 3789 } 3790 bfd_set_section_contents (output_bfd, sec->output_section, contents, 3791 (file_ptr) sec->output_offset, sec->size); 3792 3793 return TRUE; 3794 } 3795 3796 /* Copy data from a SCORE ELF indirect symbol to its direct symbol, hiding the old 3797 indirect symbol. Process additional relocation information. */ 3798 static void 3799 s3_bfd_score_elf_copy_indirect_symbol (struct bfd_link_info *info, 3800 struct elf_link_hash_entry *dir, 3801 struct elf_link_hash_entry *ind) 3802 { 3803 struct score_elf_link_hash_entry *dirscore, *indscore; 3804 3805 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 3806 3807 if (ind->root.type != bfd_link_hash_indirect) 3808 return; 3809 3810 dirscore = (struct score_elf_link_hash_entry *) dir; 3811 indscore = (struct score_elf_link_hash_entry *) ind; 3812 dirscore->possibly_dynamic_relocs += indscore->possibly_dynamic_relocs; 3813 3814 if (indscore->readonly_reloc) 3815 dirscore->readonly_reloc = TRUE; 3816 3817 if (indscore->no_fn_stub) 3818 dirscore->no_fn_stub = TRUE; 3819 } 3820 3821 /* Remove information about discarded functions from other sections which mention them. */ 3822 static bfd_boolean 3823 s3_bfd_score_elf_discard_info (bfd *abfd, struct elf_reloc_cookie *cookie, 3824 struct bfd_link_info *info) 3825 { 3826 asection *o; 3827 bfd_boolean ret = FALSE; 3828 unsigned char *tdata; 3829 size_t i, skip; 3830 3831 o = bfd_get_section_by_name (abfd, ".pdr"); 3832 if ((!o) || (o->size == 0) || (o->size % PDR_SIZE != 0) 3833 || (o->output_section != NULL && bfd_is_abs_section (o->output_section))) 3834 return FALSE; 3835 3836 tdata = bfd_zmalloc (o->size / PDR_SIZE); 3837 if (!tdata) 3838 return FALSE; 3839 3840 cookie->rels = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, info->keep_memory); 3841 if (!cookie->rels) 3842 { 3843 free (tdata); 3844 return FALSE; 3845 } 3846 3847 cookie->rel = cookie->rels; 3848 cookie->relend = cookie->rels + o->reloc_count; 3849 3850 for (i = 0, skip = 0; i < o->size; i++) 3851 { 3852 if (bfd_elf_reloc_symbol_deleted_p (i * PDR_SIZE, cookie)) 3853 { 3854 tdata[i] = 1; 3855 skip++; 3856 } 3857 } 3858 3859 if (skip != 0) 3860 { 3861 score_elf_section_data (o)->u.tdata = tdata; 3862 o->size -= skip * PDR_SIZE; 3863 ret = TRUE; 3864 } 3865 else 3866 free (tdata); 3867 3868 if (!info->keep_memory) 3869 free (cookie->rels); 3870 3871 return ret; 3872 } 3873 3874 /* Signal that discard_info() has removed the discarded relocations for this section. */ 3875 static bfd_boolean 3876 s3_bfd_score_elf_ignore_discarded_relocs (asection *sec) 3877 { 3878 if (strcmp (sec->name, ".pdr") == 0) 3879 return TRUE; 3880 return FALSE; 3881 } 3882 3883 /* Return the section that should be marked against GC for a given 3884 relocation. */ 3885 static asection * 3886 s3_bfd_score_elf_gc_mark_hook (asection *sec, 3887 struct bfd_link_info *info, 3888 Elf_Internal_Rela *rel, 3889 struct elf_link_hash_entry *h, 3890 Elf_Internal_Sym *sym) 3891 { 3892 if (h != NULL) 3893 switch (ELF32_R_TYPE (rel->r_info)) 3894 { 3895 case R_SCORE_GNU_VTINHERIT: 3896 case R_SCORE_GNU_VTENTRY: 3897 return NULL; 3898 } 3899 3900 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 3901 } 3902 3903 /* Support for core dump NOTE sections. */ 3904 3905 static bfd_boolean 3906 s3_bfd_score_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 3907 { 3908 int offset; 3909 unsigned int raw_size; 3910 3911 switch (note->descsz) 3912 { 3913 default: 3914 return FALSE; 3915 3916 case 148: /* Linux/Score 32-bit. */ 3917 /* pr_cursig */ 3918 elf_tdata (abfd)->core->signal 3919 = score_bfd_get_16 (abfd, note->descdata + 12); 3920 3921 /* pr_pid */ 3922 elf_tdata (abfd)->core->lwpid 3923 = score_bfd_get_32 (abfd, note->descdata + 24); 3924 3925 /* pr_reg */ 3926 offset = 72; 3927 raw_size = 72; 3928 3929 break; 3930 } 3931 3932 /* Make a ".reg/999" section. */ 3933 return _bfd_elfcore_make_pseudosection (abfd, ".reg", raw_size, 3934 note->descpos + offset); 3935 } 3936 3937 static bfd_boolean 3938 s3_bfd_score_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 3939 { 3940 switch (note->descsz) 3941 { 3942 default: 3943 return FALSE; 3944 3945 case 124: /* Linux/Score elf_prpsinfo. */ 3946 elf_tdata (abfd)->core->program 3947 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); 3948 elf_tdata (abfd)->core->command 3949 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); 3950 } 3951 3952 /* Note that for some reason, a spurious space is tacked 3953 onto the end of the args in some (at least one anyway) 3954 implementations, so strip it off if it exists. */ 3955 3956 { 3957 char *command = elf_tdata (abfd)->core->command; 3958 int n = strlen (command); 3959 3960 if (0 < n && command[n - 1] == ' ') 3961 command[n - 1] = '\0'; 3962 } 3963 3964 return TRUE; 3965 } 3966 3967 3968 /* Score BFD functions. */ 3969 static reloc_howto_type * 3970 s3_elf32_score_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code) 3971 { 3972 unsigned int i; 3973 3974 for (i = 0; i < ARRAY_SIZE (elf32_score_reloc_map); i++) 3975 if (elf32_score_reloc_map[i].bfd_reloc_val == code) 3976 return &elf32_score_howto_table[elf32_score_reloc_map[i].elf_reloc_val]; 3977 3978 return NULL; 3979 } 3980 3981 static reloc_howto_type * 3982 elf32_score_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 3983 const char *r_name) 3984 { 3985 unsigned int i; 3986 3987 for (i = 0; 3988 i < (sizeof (elf32_score_howto_table) 3989 / sizeof (elf32_score_howto_table[0])); 3990 i++) 3991 if (elf32_score_howto_table[i].name != NULL 3992 && strcasecmp (elf32_score_howto_table[i].name, r_name) == 0) 3993 return &elf32_score_howto_table[i]; 3994 3995 return NULL; 3996 } 3997 3998 static bfd_boolean 3999 s3_elf32_score_print_private_bfd_data (bfd *abfd, void * ptr) 4000 { 4001 FILE *file = (FILE *) ptr; 4002 4003 BFD_ASSERT (abfd != NULL && ptr != NULL); 4004 4005 /* Print normal ELF private data. */ 4006 _bfd_elf_print_private_bfd_data (abfd, ptr); 4007 4008 /* xgettext:c-format */ 4009 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); 4010 if (elf_elfheader (abfd)->e_flags & EF_SCORE_PIC) 4011 { 4012 fprintf (file, _(" [pic]")); 4013 } 4014 if (elf_elfheader (abfd)->e_flags & EF_SCORE_FIXDEP) 4015 { 4016 fprintf (file, _(" [fix dep]")); 4017 } 4018 fputc ('\n', file); 4019 4020 return TRUE; 4021 } 4022 4023 static bfd_boolean 4024 s3_elf32_score_merge_private_bfd_data (bfd *ibfd, bfd *obfd) 4025 { 4026 flagword in_flags; 4027 flagword out_flags; 4028 4029 if (!_bfd_generic_verify_endian_match (ibfd, obfd)) 4030 return FALSE; 4031 4032 in_flags = elf_elfheader (ibfd)->e_flags; 4033 out_flags = elf_elfheader (obfd)->e_flags; 4034 4035 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour 4036 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 4037 return TRUE; 4038 4039 in_flags = elf_elfheader (ibfd)->e_flags; 4040 out_flags = elf_elfheader (obfd)->e_flags; 4041 4042 if (! elf_flags_init (obfd)) 4043 { 4044 elf_flags_init (obfd) = TRUE; 4045 elf_elfheader (obfd)->e_flags = in_flags; 4046 4047 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) 4048 && bfd_get_arch_info (obfd)->the_default) 4049 { 4050 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); 4051 } 4052 4053 return TRUE; 4054 } 4055 4056 if (((in_flags & EF_SCORE_PIC) != 0) != ((out_flags & EF_SCORE_PIC) != 0)) 4057 { 4058 (*_bfd_error_handler) (_("%B: warning: linking PIC files with non-PIC files"), ibfd); 4059 } 4060 4061 /* FIXME: Maybe dependency fix compatibility should be checked here. */ 4062 4063 return TRUE; 4064 } 4065 4066 static bfd_boolean 4067 s3_elf32_score_new_section_hook (bfd *abfd, asection *sec) 4068 { 4069 struct _score_elf_section_data *sdata; 4070 bfd_size_type amt = sizeof (*sdata); 4071 4072 sdata = bfd_zalloc (abfd, amt); 4073 if (sdata == NULL) 4074 return FALSE; 4075 sec->used_by_bfd = sdata; 4076 4077 return _bfd_elf_new_section_hook (abfd, sec); 4078 } 4079 4080 /*****************************************************************************/ 4081 4082 /* s3_s7: backend hooks. */ 4083 static void 4084 _bfd_score_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, 4085 arelent *bfd_reloc, 4086 Elf_Internal_Rela *elf_reloc) 4087 { 4088 if (bfd_get_mach (abfd) == bfd_mach_score3) 4089 return s3_bfd_score_info_to_howto (abfd, bfd_reloc, elf_reloc); 4090 else 4091 return s7_bfd_score_info_to_howto (abfd, bfd_reloc, elf_reloc); 4092 } 4093 4094 static bfd_boolean 4095 _bfd_score_elf_relocate_section (bfd *output_bfd, 4096 struct bfd_link_info *info, 4097 bfd *input_bfd, 4098 asection *input_section, 4099 bfd_byte *contents, 4100 Elf_Internal_Rela *relocs, 4101 Elf_Internal_Sym *local_syms, 4102 asection **local_sections) 4103 { 4104 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4105 return s3_bfd_score_elf_relocate_section (output_bfd, 4106 info, input_bfd, input_section, contents, relocs, 4107 local_syms, local_sections); 4108 else 4109 return s7_bfd_score_elf_relocate_section (output_bfd, 4110 info, input_bfd, input_section, contents, relocs, 4111 local_syms, local_sections); 4112 } 4113 4114 static bfd_boolean 4115 _bfd_score_elf_check_relocs (bfd *abfd, 4116 struct bfd_link_info *info, 4117 asection *sec, 4118 const Elf_Internal_Rela *relocs) 4119 { 4120 if (bfd_get_mach (abfd) == bfd_mach_score3) 4121 return s3_bfd_score_elf_check_relocs (abfd, info, sec, relocs); 4122 else 4123 return s7_bfd_score_elf_check_relocs (abfd, info, sec, relocs); 4124 } 4125 4126 static bfd_boolean 4127 _bfd_score_elf_add_symbol_hook (bfd *abfd, 4128 struct bfd_link_info *info ATTRIBUTE_UNUSED, 4129 Elf_Internal_Sym *sym, 4130 const char **namep ATTRIBUTE_UNUSED, 4131 flagword *flagsp ATTRIBUTE_UNUSED, 4132 asection **secp, 4133 bfd_vma *valp) 4134 { 4135 if (bfd_get_mach (abfd) == bfd_mach_score3) 4136 return s3_bfd_score_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, 4137 secp, valp); 4138 else 4139 return s7_bfd_score_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, 4140 secp, valp); 4141 } 4142 4143 static void 4144 _bfd_score_elf_symbol_processing (bfd *abfd, asymbol *asym) 4145 { 4146 if (bfd_get_mach (abfd) == bfd_mach_score3) 4147 return s3_bfd_score_elf_symbol_processing (abfd, asym); 4148 else 4149 return s7_bfd_score_elf_symbol_processing (abfd, asym); 4150 } 4151 4152 static int 4153 _bfd_score_elf_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED, 4154 const char *name ATTRIBUTE_UNUSED, 4155 Elf_Internal_Sym *sym, 4156 asection *input_sec, 4157 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) 4158 { 4159 /* If link a empty .o, then this filed is NULL. */ 4160 if (info->input_bfds == NULL) 4161 { 4162 /* If we see a common symbol, which implies a relocatable link, then 4163 if a symbol was small common in an input file, mark it as small 4164 common in the output file. */ 4165 if (sym->st_shndx == SHN_COMMON && strcmp (input_sec->name, ".scommon") == 0) 4166 sym->st_shndx = SHN_SCORE_SCOMMON; 4167 return 1; 4168 } 4169 4170 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4171 return s3_bfd_score_elf_link_output_symbol_hook (info, name, sym, input_sec, h); 4172 else 4173 return s7_bfd_score_elf_link_output_symbol_hook (info, name, sym, input_sec, h); 4174 } 4175 4176 static bfd_boolean 4177 _bfd_score_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, 4178 asection *sec, 4179 int *retval) 4180 { 4181 if (bfd_get_mach (abfd) == bfd_mach_score3) 4182 return s3_bfd_score_elf_section_from_bfd_section (abfd, sec, retval); 4183 else 4184 return s7_bfd_score_elf_section_from_bfd_section (abfd, sec, retval); 4185 } 4186 4187 static bfd_boolean 4188 _bfd_score_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 4189 struct elf_link_hash_entry *h) 4190 { 4191 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4192 return s3_bfd_score_elf_adjust_dynamic_symbol (info, h); 4193 else 4194 return s7_bfd_score_elf_adjust_dynamic_symbol (info, h); 4195 } 4196 4197 static bfd_boolean 4198 _bfd_score_elf_always_size_sections (bfd *output_bfd, 4199 struct bfd_link_info *info) 4200 { 4201 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4202 return s3_bfd_score_elf_always_size_sections (output_bfd, info); 4203 else 4204 return s7_bfd_score_elf_always_size_sections (output_bfd, info); 4205 } 4206 4207 static bfd_boolean 4208 _bfd_score_elf_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) 4209 { 4210 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4211 return s3_bfd_score_elf_size_dynamic_sections (output_bfd, info); 4212 else 4213 return s7_bfd_score_elf_size_dynamic_sections (output_bfd, info); 4214 } 4215 4216 static bfd_boolean 4217 _bfd_score_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 4218 { 4219 if (bfd_get_mach (abfd) == bfd_mach_score3) 4220 return s3_bfd_score_elf_create_dynamic_sections (abfd, info); 4221 else 4222 return s7_bfd_score_elf_create_dynamic_sections (abfd, info); 4223 } 4224 4225 static bfd_boolean 4226 _bfd_score_elf_finish_dynamic_symbol (bfd *output_bfd, 4227 struct bfd_link_info *info, 4228 struct elf_link_hash_entry *h, 4229 Elf_Internal_Sym *sym) 4230 { 4231 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4232 return s3_bfd_score_elf_finish_dynamic_symbol (output_bfd, info, h, sym); 4233 else 4234 return s7_bfd_score_elf_finish_dynamic_symbol (output_bfd, info, h, sym); 4235 } 4236 4237 static bfd_boolean 4238 _bfd_score_elf_finish_dynamic_sections (bfd *output_bfd, 4239 struct bfd_link_info *info) 4240 { 4241 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4242 return s3_bfd_score_elf_finish_dynamic_sections (output_bfd, info); 4243 else 4244 return s7_bfd_score_elf_finish_dynamic_sections (output_bfd, info); 4245 } 4246 4247 static bfd_boolean 4248 _bfd_score_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, 4249 Elf_Internal_Shdr *hdr, 4250 asection *sec) 4251 { 4252 if (bfd_get_mach (abfd) == bfd_mach_score3) 4253 return s3_bfd_score_elf_fake_sections (abfd, hdr, sec); 4254 else 4255 return s7_bfd_score_elf_fake_sections (abfd, hdr, sec); 4256 } 4257 4258 static bfd_boolean 4259 _bfd_score_elf_section_processing (bfd *abfd ATTRIBUTE_UNUSED, Elf_Internal_Shdr *hdr) 4260 { 4261 if (bfd_get_mach (abfd) == bfd_mach_score3) 4262 return s3_bfd_score_elf_section_processing (abfd, hdr); 4263 else 4264 return s7_bfd_score_elf_section_processing (abfd, hdr); 4265 } 4266 4267 static bfd_boolean 4268 _bfd_score_elf_write_section (bfd *output_bfd, 4269 struct bfd_link_info *link_info ATTRIBUTE_UNUSED, 4270 asection *sec, bfd_byte *contents) 4271 { 4272 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4273 return s3_bfd_score_elf_write_section (output_bfd, sec, contents); 4274 else 4275 return s7_bfd_score_elf_write_section (output_bfd, sec, contents); 4276 } 4277 4278 static void 4279 _bfd_score_elf_copy_indirect_symbol (struct bfd_link_info *info, 4280 struct elf_link_hash_entry *dir, 4281 struct elf_link_hash_entry *ind) 4282 { 4283 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4284 return s3_bfd_score_elf_copy_indirect_symbol (info, dir, ind); 4285 else 4286 return s7_bfd_score_elf_copy_indirect_symbol (info, dir, ind); 4287 } 4288 4289 static void 4290 _bfd_score_elf_hide_symbol (struct bfd_link_info *info, 4291 struct elf_link_hash_entry *entry, 4292 bfd_boolean force_local) 4293 { 4294 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4295 return s3_bfd_score_elf_hide_symbol (info, entry, force_local); 4296 else 4297 return s7_bfd_score_elf_hide_symbol (info, entry, force_local); 4298 } 4299 4300 static bfd_boolean 4301 _bfd_score_elf_discard_info (bfd *abfd, struct elf_reloc_cookie *cookie, 4302 struct bfd_link_info *info) 4303 { 4304 if (bfd_get_mach (abfd) == bfd_mach_score3) 4305 return s3_bfd_score_elf_discard_info (abfd, cookie, info); 4306 else 4307 return s7_bfd_score_elf_discard_info (abfd, cookie, info); 4308 } 4309 4310 static bfd_boolean 4311 _bfd_score_elf_ignore_discarded_relocs (asection *sec) 4312 { 4313 if (bfd_get_mach (sec->owner) == bfd_mach_score3) 4314 return s3_bfd_score_elf_ignore_discarded_relocs (sec); 4315 else 4316 return s7_bfd_score_elf_ignore_discarded_relocs (sec); 4317 } 4318 4319 static asection * 4320 _bfd_score_elf_gc_mark_hook (asection *sec, 4321 struct bfd_link_info *info, 4322 Elf_Internal_Rela *rel, 4323 struct elf_link_hash_entry *h, 4324 Elf_Internal_Sym *sym) 4325 { 4326 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4327 return s3_bfd_score_elf_gc_mark_hook (sec, info, rel, h, sym); 4328 else 4329 return s7_bfd_score_elf_gc_mark_hook (sec, info, rel, h, sym); 4330 } 4331 4332 static bfd_boolean 4333 _bfd_score_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 4334 { 4335 if (bfd_get_mach (abfd) == bfd_mach_score3) 4336 return s3_bfd_score_elf_grok_prstatus (abfd, note); 4337 else 4338 return s7_bfd_score_elf_grok_prstatus (abfd, note); 4339 } 4340 4341 static bfd_boolean 4342 _bfd_score_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 4343 { 4344 if (bfd_get_mach (abfd) == bfd_mach_score3) 4345 return s3_bfd_score_elf_grok_psinfo (abfd, note); 4346 else 4347 return s7_bfd_score_elf_grok_psinfo (abfd, note); 4348 } 4349 4350 static reloc_howto_type * 4351 elf32_score_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code) 4352 { 4353 /* s3: NOTE!!! 4354 gas will call elf32_score_reloc_type_lookup, and don't write elf file. 4355 So just using score3, but we don't know ld will call this or not. 4356 If so, this way can't work. */ 4357 4358 if (score3) 4359 return s3_elf32_score_reloc_type_lookup (abfd, code); 4360 else 4361 return s7_elf32_score_reloc_type_lookup (abfd, code); 4362 } 4363 4364 /* Create a score elf linker hash table. 4365 This is a copy of _bfd_elf_link_hash_table_create() except with a 4366 different hash table entry creation function. */ 4367 4368 static struct bfd_link_hash_table * 4369 elf32_score_link_hash_table_create (bfd *abfd) 4370 { 4371 struct elf_link_hash_table *ret; 4372 bfd_size_type amt = sizeof (struct elf_link_hash_table); 4373 4374 ret = (struct elf_link_hash_table *) bfd_zmalloc (amt); 4375 if (ret == NULL) 4376 return NULL; 4377 4378 if (!_bfd_elf_link_hash_table_init (ret, abfd, score_elf_link_hash_newfunc, 4379 sizeof (struct score_elf_link_hash_entry), 4380 GENERIC_ELF_DATA)) 4381 { 4382 free (ret); 4383 return NULL; 4384 } 4385 4386 return &ret->root; 4387 } 4388 4389 static bfd_boolean 4390 elf32_score_print_private_bfd_data (bfd *abfd, void * ptr) 4391 { 4392 if (bfd_get_mach (abfd) == bfd_mach_score3) 4393 return s3_elf32_score_print_private_bfd_data (abfd, ptr); 4394 else 4395 return s7_elf32_score_print_private_bfd_data (abfd, ptr); 4396 } 4397 4398 static bfd_boolean 4399 elf32_score_merge_private_bfd_data (bfd *ibfd, bfd *obfd) 4400 { 4401 if (bfd_get_mach (obfd) == bfd_mach_score3) 4402 return s3_elf32_score_merge_private_bfd_data (ibfd, obfd); 4403 else 4404 return s7_elf32_score_merge_private_bfd_data (ibfd, obfd); 4405 } 4406 4407 static bfd_boolean 4408 elf32_score_new_section_hook (bfd *abfd, asection *sec) 4409 { 4410 if (bfd_get_mach (abfd) == bfd_mach_score3) 4411 return s3_elf32_score_new_section_hook (abfd, sec); 4412 else 4413 return s7_elf32_score_new_section_hook (abfd, sec); 4414 } 4415 4416 4417 /* s3_s7: don't need to split. */ 4418 4419 /* Set the right machine number. */ 4420 static bfd_boolean 4421 _bfd_score_elf_score_object_p (bfd * abfd) 4422 { 4423 int e_set = bfd_mach_score7; 4424 4425 if (elf_elfheader (abfd)->e_machine == EM_SCORE) 4426 { 4427 int e_mach = elf_elfheader (abfd)->e_flags & EF_SCORE_MACH & EF_OMIT_PIC_FIXDD; 4428 switch (e_mach) 4429 { 4430 /* Set default target is score7. */ 4431 default: 4432 case E_SCORE_MACH_SCORE7: 4433 e_set = bfd_mach_score7; 4434 break; 4435 4436 case E_SCORE_MACH_SCORE3: 4437 e_set = bfd_mach_score3; 4438 break; 4439 } 4440 } 4441 4442 return bfd_default_set_arch_mach (abfd, bfd_arch_score, e_set); 4443 } 4444 4445 bfd_boolean 4446 _bfd_score_elf_common_definition (Elf_Internal_Sym *sym) 4447 { 4448 return (sym->st_shndx == SHN_COMMON || sym->st_shndx == SHN_SCORE_SCOMMON); 4449 } 4450 4451 /*****************************************************************************/ 4452 4453 4454 #define USE_REL 1 4455 #define TARGET_LITTLE_SYM score_elf32_le_vec 4456 #define TARGET_LITTLE_NAME "elf32-littlescore" 4457 #define TARGET_BIG_SYM score_elf32_be_vec 4458 #define TARGET_BIG_NAME "elf32-bigscore" 4459 #define ELF_ARCH bfd_arch_score 4460 #define ELF_MACHINE_CODE EM_SCORE 4461 #define ELF_MACHINE_ALT1 EM_SCORE_OLD 4462 #define ELF_MAXPAGESIZE 0x8000 4463 4464 #define elf_info_to_howto 0 4465 #define elf_info_to_howto_rel _bfd_score_info_to_howto 4466 #define elf_backend_relocate_section _bfd_score_elf_relocate_section 4467 #define elf_backend_check_relocs _bfd_score_elf_check_relocs 4468 #define elf_backend_add_symbol_hook _bfd_score_elf_add_symbol_hook 4469 #define elf_backend_symbol_processing _bfd_score_elf_symbol_processing 4470 #define elf_backend_link_output_symbol_hook \ 4471 _bfd_score_elf_link_output_symbol_hook 4472 #define elf_backend_section_from_bfd_section \ 4473 _bfd_score_elf_section_from_bfd_section 4474 #define elf_backend_adjust_dynamic_symbol \ 4475 _bfd_score_elf_adjust_dynamic_symbol 4476 #define elf_backend_always_size_sections \ 4477 _bfd_score_elf_always_size_sections 4478 #define elf_backend_size_dynamic_sections \ 4479 _bfd_score_elf_size_dynamic_sections 4480 #define elf_backend_omit_section_dynsym \ 4481 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) 4482 #define elf_backend_create_dynamic_sections \ 4483 _bfd_score_elf_create_dynamic_sections 4484 #define elf_backend_finish_dynamic_symbol \ 4485 _bfd_score_elf_finish_dynamic_symbol 4486 #define elf_backend_finish_dynamic_sections \ 4487 _bfd_score_elf_finish_dynamic_sections 4488 #define elf_backend_fake_sections _bfd_score_elf_fake_sections 4489 #define elf_backend_section_processing _bfd_score_elf_section_processing 4490 #define elf_backend_write_section _bfd_score_elf_write_section 4491 #define elf_backend_copy_indirect_symbol _bfd_score_elf_copy_indirect_symbol 4492 #define elf_backend_hide_symbol _bfd_score_elf_hide_symbol 4493 #define elf_backend_discard_info _bfd_score_elf_discard_info 4494 #define elf_backend_ignore_discarded_relocs \ 4495 _bfd_score_elf_ignore_discarded_relocs 4496 #define elf_backend_gc_mark_hook _bfd_score_elf_gc_mark_hook 4497 #define elf_backend_grok_prstatus _bfd_score_elf_grok_prstatus 4498 #define elf_backend_grok_psinfo _bfd_score_elf_grok_psinfo 4499 #define elf_backend_can_gc_sections 1 4500 #define elf_backend_want_plt_sym 0 4501 #define elf_backend_got_header_size (4 * SCORE_RESERVED_GOTNO) 4502 #define elf_backend_plt_header_size 0 4503 #define elf_backend_collect TRUE 4504 #define elf_backend_type_change_ok TRUE 4505 #define elf_backend_object_p _bfd_score_elf_score_object_p 4506 4507 #define bfd_elf32_bfd_reloc_type_lookup elf32_score_reloc_type_lookup 4508 #define bfd_elf32_bfd_reloc_name_lookup \ 4509 elf32_score_reloc_name_lookup 4510 #define bfd_elf32_bfd_link_hash_table_create elf32_score_link_hash_table_create 4511 #define bfd_elf32_bfd_print_private_bfd_data elf32_score_print_private_bfd_data 4512 #define bfd_elf32_bfd_merge_private_bfd_data elf32_score_merge_private_bfd_data 4513 #define bfd_elf32_new_section_hook elf32_score_new_section_hook 4514 4515 #include "elf32-target.h" 4516
