1 /* 32-bit ELF support for S+core. 2 Copyright (C) 2006-2018 Free Software Foundation, Inc. 3 Contributed by 4 Brain.lin (brain.lin@sunplusct.com) 5 Mei Ligang (ligang@sunnorth.com.cn) 6 Pei-Lin Tsai (pltsai@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 bfd_uint64_t v; 231 232 v = (bfd_uint64_t) addr[4]; 233 v |= (bfd_uint64_t) addr[5] << 8; 234 v |= (bfd_uint64_t) addr[2] << 16; 235 v |= (bfd_uint64_t) addr[3] << 24; 236 v |= (bfd_uint64_t) addr[0] << 32; 237 v |= (bfd_uint64_t) 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 3, /* 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 elf_hash_table (info)->sgot = s; 1433 if (s == NULL 1434 || ! bfd_set_section_alignment (abfd, s, 4)) 1435 return FALSE; 1436 1437 /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the 1438 linker script because we don't want to define the symbol if we 1439 are not creating a global offset table. */ 1440 bh = NULL; 1441 if (! (_bfd_generic_link_add_one_symbol 1442 (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, 1443 0, NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) 1444 return FALSE; 1445 1446 h = (struct elf_link_hash_entry *) bh; 1447 h->non_elf = 0; 1448 h->def_regular = 1; 1449 h->type = STT_OBJECT; 1450 elf_hash_table (info)->hgot = h; 1451 1452 if (bfd_link_pic (info) && ! bfd_elf_link_record_dynamic_symbol (info, h)) 1453 return FALSE; 1454 1455 amt = sizeof (struct score_got_info); 1456 g = bfd_alloc (abfd, amt); 1457 if (g == NULL) 1458 return FALSE; 1459 1460 g->global_gotsym = NULL; 1461 g->global_gotno = 0; 1462 1463 g->local_gotno = SCORE_RESERVED_GOTNO; 1464 g->assigned_gotno = SCORE_RESERVED_GOTNO; 1465 g->next = NULL; 1466 1467 g->got_entries = htab_try_create (1, score_elf_got_entry_hash, 1468 score_elf_got_entry_eq, NULL); 1469 if (g->got_entries == NULL) 1470 return FALSE; 1471 score_elf_section_data (s)->u.got_info = g; 1472 score_elf_section_data (s)->elf.this_hdr.sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_SCORE_GPREL; 1473 1474 return TRUE; 1475 } 1476 1477 /* Calculate the %high function. */ 1478 static bfd_vma 1479 score_elf_high (bfd_vma value) 1480 { 1481 return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff; 1482 } 1483 1484 /* Create a local GOT entry for VALUE. Return the index of the entry, 1485 or -1 if it could not be created. */ 1486 static struct score_got_entry * 1487 score_elf_create_local_got_entry (bfd *abfd, 1488 bfd *ibfd ATTRIBUTE_UNUSED, 1489 struct score_got_info *gg, 1490 asection *sgot, bfd_vma value, 1491 unsigned long r_symndx ATTRIBUTE_UNUSED, 1492 struct score_elf_link_hash_entry *h ATTRIBUTE_UNUSED, 1493 int r_type ATTRIBUTE_UNUSED) 1494 { 1495 struct score_got_entry entry, **loc; 1496 struct score_got_info *g; 1497 1498 entry.abfd = NULL; 1499 entry.symndx = -1; 1500 entry.d.address = value; 1501 1502 g = gg; 1503 loc = (struct score_got_entry **) htab_find_slot (g->got_entries, &entry, INSERT); 1504 if (*loc) 1505 return *loc; 1506 1507 entry.gotidx = SCORE_ELF_GOT_SIZE (abfd) * g->assigned_gotno++; 1508 1509 *loc = bfd_alloc (abfd, sizeof entry); 1510 1511 if (! *loc) 1512 return NULL; 1513 1514 memcpy (*loc, &entry, sizeof entry); 1515 1516 if (g->assigned_gotno >= g->local_gotno) 1517 { 1518 (*loc)->gotidx = -1; 1519 /* We didn't allocate enough space in the GOT. */ 1520 _bfd_error_handler 1521 (_("not enough GOT space for local GOT entries")); 1522 bfd_set_error (bfd_error_bad_value); 1523 return NULL; 1524 } 1525 1526 score_bfd_put_32 (abfd, value, (sgot->contents + entry.gotidx)); 1527 1528 return *loc; 1529 } 1530 1531 /* Find a GOT entry whose higher-order 16 bits are the same as those 1532 for value. Return the index into the GOT for this entry. */ 1533 static bfd_vma 1534 score_elf_got16_entry (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, 1535 bfd_vma value, bfd_boolean external) 1536 { 1537 asection *sgot; 1538 struct score_got_info *g; 1539 struct score_got_entry *entry; 1540 1541 if (!external) 1542 { 1543 /* Although the ABI says that it is "the high-order 16 bits" that we 1544 want, it is really the %high value. The complete value is 1545 calculated with a `addiu' of a LO16 relocation, just as with a 1546 HI16/LO16 pair. */ 1547 value = score_elf_high (value) << 16; 1548 } 1549 1550 g = score_elf_got_info (elf_hash_table (info)->dynobj, &sgot); 1551 1552 entry = score_elf_create_local_got_entry (abfd, ibfd, g, sgot, value, 0, NULL, 1553 R_SCORE_GOT15); 1554 if (entry) 1555 return entry->gotidx; 1556 else 1557 return MINUS_ONE; 1558 } 1559 1560 static void 1561 s3_bfd_score_elf_hide_symbol (struct bfd_link_info *info, 1562 struct elf_link_hash_entry *entry, 1563 bfd_boolean force_local) 1564 { 1565 bfd *dynobj; 1566 asection *got; 1567 struct score_got_info *g; 1568 struct score_elf_link_hash_entry *h; 1569 1570 h = (struct score_elf_link_hash_entry *) entry; 1571 if (h->forced_local) 1572 return; 1573 h->forced_local = TRUE; 1574 1575 dynobj = elf_hash_table (info)->dynobj; 1576 if (dynobj != NULL && force_local) 1577 { 1578 got = score_elf_got_section (dynobj, FALSE); 1579 if (got == NULL) 1580 return; 1581 g = score_elf_section_data (got)->u.got_info; 1582 1583 if (g->next) 1584 { 1585 struct score_got_entry e; 1586 struct score_got_info *gg = g; 1587 1588 /* Since we're turning what used to be a global symbol into a 1589 local one, bump up the number of local entries of each GOT 1590 that had an entry for it. This will automatically decrease 1591 the number of global entries, since global_gotno is actually 1592 the upper limit of global entries. */ 1593 e.abfd = dynobj; 1594 e.symndx = -1; 1595 e.d.h = h; 1596 1597 for (g = g->next; g != gg; g = g->next) 1598 if (htab_find (g->got_entries, &e)) 1599 { 1600 BFD_ASSERT (g->global_gotno > 0); 1601 g->local_gotno++; 1602 g->global_gotno--; 1603 } 1604 1605 /* If this was a global symbol forced into the primary GOT, we 1606 no longer need an entry for it. We can't release the entry 1607 at this point, but we must at least stop counting it as one 1608 of the symbols that required a forced got entry. */ 1609 if (h->root.got.offset == 2) 1610 { 1611 BFD_ASSERT (gg->assigned_gotno > 0); 1612 gg->assigned_gotno--; 1613 } 1614 } 1615 else if (g->global_gotno == 0 && g->global_gotsym == NULL) 1616 /* If we haven't got through GOT allocation yet, just bump up the 1617 number of local entries, as this symbol won't be counted as 1618 global. */ 1619 g->local_gotno++; 1620 else if (h->root.got.offset == 1) 1621 { 1622 /* If we're past non-multi-GOT allocation and this symbol had 1623 been marked for a global got entry, give it a local entry 1624 instead. */ 1625 BFD_ASSERT (g->global_gotno > 0); 1626 g->local_gotno++; 1627 g->global_gotno--; 1628 } 1629 } 1630 1631 _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local); 1632 } 1633 1634 /* If H is a symbol that needs a global GOT entry, but has a dynamic 1635 symbol table index lower than any we've seen to date, record it for 1636 posterity. */ 1637 static bfd_boolean 1638 score_elf_record_global_got_symbol (struct elf_link_hash_entry *h, 1639 bfd *abfd, 1640 struct bfd_link_info *info, 1641 struct score_got_info *g) 1642 { 1643 struct score_got_entry entry, **loc; 1644 1645 /* A global symbol in the GOT must also be in the dynamic symbol table. */ 1646 if (h->dynindx == -1) 1647 { 1648 switch (ELF_ST_VISIBILITY (h->other)) 1649 { 1650 case STV_INTERNAL: 1651 case STV_HIDDEN: 1652 s3_bfd_score_elf_hide_symbol (info, h, TRUE); 1653 break; 1654 } 1655 if (!bfd_elf_link_record_dynamic_symbol (info, h)) 1656 return FALSE; 1657 } 1658 1659 entry.abfd = abfd; 1660 entry.symndx = -1; 1661 entry.d.h = (struct score_elf_link_hash_entry *)h; 1662 1663 loc = (struct score_got_entry **)htab_find_slot (g->got_entries, &entry, INSERT); 1664 1665 /* If we've already marked this entry as needing GOT space, we don't 1666 need to do it again. */ 1667 if (*loc) 1668 return TRUE; 1669 1670 *loc = bfd_alloc (abfd, sizeof entry); 1671 if (! *loc) 1672 return FALSE; 1673 1674 entry.gotidx = -1; 1675 1676 memcpy (*loc, &entry, sizeof (entry)); 1677 1678 if (h->got.offset != MINUS_ONE) 1679 return TRUE; 1680 1681 /* By setting this to a value other than -1, we are indicating that 1682 there needs to be a GOT entry for H. Avoid using zero, as the 1683 generic ELF copy_indirect_symbol tests for <= 0. */ 1684 h->got.offset = 1; 1685 1686 return TRUE; 1687 } 1688 1689 /* Reserve space in G for a GOT entry containing the value of symbol 1690 SYMNDX in input bfd ABDF, plus ADDEND. */ 1691 static bfd_boolean 1692 score_elf_record_local_got_symbol (bfd *abfd, 1693 long symndx, 1694 bfd_vma addend, 1695 struct score_got_info *g) 1696 { 1697 struct score_got_entry entry, **loc; 1698 1699 entry.abfd = abfd; 1700 entry.symndx = symndx; 1701 entry.d.addend = addend; 1702 loc = (struct score_got_entry **)htab_find_slot (g->got_entries, &entry, INSERT); 1703 1704 if (*loc) 1705 return TRUE; 1706 1707 entry.gotidx = g->local_gotno++; 1708 1709 *loc = bfd_alloc (abfd, sizeof(entry)); 1710 if (! *loc) 1711 return FALSE; 1712 1713 memcpy (*loc, &entry, sizeof (entry)); 1714 1715 return TRUE; 1716 } 1717 1718 /* Returns the GOT offset at which the indicated address can be found. 1719 If there is not yet a GOT entry for this value, create one. 1720 Returns -1 if no satisfactory GOT offset can be found. */ 1721 static bfd_vma 1722 score_elf_local_got_index (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, 1723 bfd_vma value, unsigned long r_symndx, 1724 struct score_elf_link_hash_entry *h, int r_type) 1725 { 1726 asection *sgot; 1727 struct score_got_info *g; 1728 struct score_got_entry *entry; 1729 1730 g = score_elf_got_info (elf_hash_table (info)->dynobj, &sgot); 1731 1732 entry = score_elf_create_local_got_entry (abfd, ibfd, g, sgot, value, 1733 r_symndx, h, r_type); 1734 if (!entry) 1735 return MINUS_ONE; 1736 1737 else 1738 return entry->gotidx; 1739 } 1740 1741 /* Returns the GOT index for the global symbol indicated by H. */ 1742 1743 static bfd_vma 1744 score_elf_global_got_index (bfd *abfd, struct elf_link_hash_entry *h) 1745 { 1746 bfd_vma got_index; 1747 asection *sgot; 1748 struct score_got_info *g; 1749 long global_got_dynindx = 0; 1750 1751 g = score_elf_got_info (abfd, &sgot); 1752 if (g->global_gotsym != NULL) 1753 global_got_dynindx = g->global_gotsym->dynindx; 1754 1755 /* Once we determine the global GOT entry with the lowest dynamic 1756 symbol table index, we must put all dynamic symbols with greater 1757 indices into the GOT. That makes it easy to calculate the GOT 1758 offset. */ 1759 BFD_ASSERT (h->dynindx >= global_got_dynindx); 1760 got_index = ((h->dynindx - global_got_dynindx + g->local_gotno) * SCORE_ELF_GOT_SIZE (abfd)); 1761 BFD_ASSERT (got_index < sgot->size); 1762 1763 return got_index; 1764 } 1765 1766 /* Returns the offset for the entry at the INDEXth position in the GOT. */ 1767 1768 static bfd_vma 1769 score_elf_got_offset_from_index (bfd *dynobj, 1770 bfd *output_bfd, 1771 bfd *input_bfd ATTRIBUTE_UNUSED, 1772 bfd_vma got_index) 1773 { 1774 asection *sgot; 1775 bfd_vma gp; 1776 1777 score_elf_got_info (dynobj, &sgot); 1778 gp = _bfd_get_gp_value (output_bfd); 1779 1780 return sgot->output_section->vma + sgot->output_offset + got_index - gp; 1781 } 1782 1783 /* Follow indirect and warning hash entries so that each got entry 1784 points to the final symbol definition. P must point to a pointer 1785 to the hash table we're traversing. Since this traversal may 1786 modify the hash table, we set this pointer to NULL to indicate 1787 we've made a potentially-destructive change to the hash table, so 1788 the traversal must be restarted. */ 1789 static int 1790 score_elf_resolve_final_got_entry (void **entryp, void *p) 1791 { 1792 struct score_got_entry *entry = (struct score_got_entry *)*entryp; 1793 htab_t got_entries = *(htab_t *)p; 1794 1795 if (entry->abfd != NULL && entry->symndx == -1) 1796 { 1797 struct score_elf_link_hash_entry *h = entry->d.h; 1798 1799 while (h->root.root.type == bfd_link_hash_indirect 1800 || h->root.root.type == bfd_link_hash_warning) 1801 h = (struct score_elf_link_hash_entry *) h->root.root.u.i.link; 1802 1803 if (entry->d.h == h) 1804 return 1; 1805 1806 entry->d.h = h; 1807 1808 /* If we can't find this entry with the new bfd hash, re-insert 1809 it, and get the traversal restarted. */ 1810 if (! htab_find (got_entries, entry)) 1811 { 1812 htab_clear_slot (got_entries, entryp); 1813 entryp = htab_find_slot (got_entries, entry, INSERT); 1814 if (! *entryp) 1815 *entryp = entry; 1816 /* Abort the traversal, since the whole table may have 1817 moved, and leave it up to the parent to restart the 1818 process. */ 1819 *(htab_t *)p = NULL; 1820 return 0; 1821 } 1822 /* We might want to decrement the global_gotno count, but it's 1823 either too early or too late for that at this point. */ 1824 } 1825 1826 return 1; 1827 } 1828 1829 /* Turn indirect got entries in a got_entries table into their final locations. */ 1830 static void 1831 score_elf_resolve_final_got_entries (struct score_got_info *g) 1832 { 1833 htab_t got_entries; 1834 1835 do 1836 { 1837 got_entries = g->got_entries; 1838 1839 htab_traverse (got_entries, 1840 score_elf_resolve_final_got_entry, 1841 &got_entries); 1842 } 1843 while (got_entries == NULL); 1844 } 1845 1846 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. for -r */ 1847 static void 1848 score_elf_add_to_rel (bfd *abfd, 1849 bfd_byte *address, 1850 reloc_howto_type *howto, 1851 bfd_signed_vma increment) 1852 { 1853 bfd_signed_vma addend; 1854 bfd_vma contents; 1855 unsigned long offset; 1856 unsigned long r_type = howto->type; 1857 unsigned long hi16_addend, hi16_offset, hi16_value, uvalue; 1858 1859 contents = score_bfd_get_32 (abfd, address); 1860 /* Get the (signed) value from the instruction. */ 1861 addend = contents & howto->src_mask; 1862 if (addend & ((howto->src_mask + 1) >> 1)) 1863 { 1864 bfd_signed_vma mask; 1865 1866 mask = -1; 1867 mask &= ~howto->src_mask; 1868 addend |= mask; 1869 } 1870 /* Add in the increment, (which is a byte value). */ 1871 switch (r_type) 1872 { 1873 case R_SCORE_PC19: 1874 offset = 1875 (((contents & howto->src_mask) & 0x3ff0000) >> 6) | ((contents & howto->src_mask) & 0x3ff); 1876 offset += increment; 1877 contents = 1878 (contents & ~howto-> 1879 src_mask) | (((offset << 6) & howto->src_mask) & 0x3ff0000) | (offset & 0x3ff); 1880 score_bfd_put_32 (abfd, contents, address); 1881 break; 1882 case R_SCORE_HI16: 1883 break; 1884 case R_SCORE_LO16: 1885 hi16_addend = score_bfd_get_32 (abfd, address - 4); 1886 hi16_offset = ((((hi16_addend >> 16) & 0x3) << 15) | (hi16_addend & 0x7fff)) >> 1; 1887 offset = ((((contents >> 16) & 0x3) << 15) | (contents & 0x7fff)) >> 1; 1888 offset = (hi16_offset << 16) | (offset & 0xffff); 1889 uvalue = increment + offset; 1890 hi16_offset = (uvalue >> 16) << 1; 1891 hi16_value = (hi16_addend & (~(howto->dst_mask))) 1892 | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000); 1893 score_bfd_put_32 (abfd, hi16_value, address - 4); 1894 offset = (uvalue & 0xffff) << 1; 1895 contents = (contents & (~(howto->dst_mask))) | (offset & 0x7fff) | ((offset << 1) & 0x30000); 1896 score_bfd_put_32 (abfd, contents, address); 1897 break; 1898 case R_SCORE_24: 1899 offset = 1900 (((contents & howto->src_mask) >> 1) & 0x1ff8000) | ((contents & howto->src_mask) & 0x7fff); 1901 offset += increment; 1902 contents = 1903 (contents & ~howto-> 1904 src_mask) | (((offset << 1) & howto->src_mask) & 0x3ff0000) | (offset & 0x7fff); 1905 score_bfd_put_32 (abfd, contents, address); 1906 break; 1907 1908 case R_SCORE16_11: 1909 1910 contents = score_bfd_get_16 (abfd, address); 1911 offset = contents & howto->src_mask; 1912 offset += increment; 1913 contents = (contents & ~howto->src_mask) | (offset & howto->src_mask); 1914 score_bfd_put_16 (abfd, contents, address); 1915 1916 break; 1917 case R_SCORE16_PC8: 1918 1919 contents = score_bfd_get_16 (abfd, address); 1920 offset = (contents & howto->src_mask) + ((increment >> 1) & 0x1ff); 1921 contents = (contents & (~howto->src_mask)) | (offset & howto->src_mask); 1922 score_bfd_put_16 (abfd, contents, address); 1923 1924 break; 1925 1926 case R_SCORE_BCMP: 1927 contents = score_bfd_get_32 (abfd, address); 1928 offset = (contents & howto->src_mask); 1929 offset <<= howto->rightshift; 1930 offset += increment; 1931 offset >>= howto->rightshift; 1932 contents = (contents & (~howto->src_mask)) | (offset & howto->src_mask); 1933 score_bfd_put_32 (abfd, contents, address); 1934 break; 1935 1936 case R_SCORE_IMM30: 1937 contents = score_bfd_get_48 (abfd, address); 1938 offset = (contents & howto->src_mask); 1939 offset <<= howto->rightshift; 1940 offset += increment; 1941 offset >>= howto->rightshift; 1942 contents = (contents & (~howto->src_mask)) | (offset & howto->src_mask); 1943 score_bfd_put_48 (abfd, contents, address); 1944 break; 1945 1946 case R_SCORE_IMM32: 1947 contents = score_bfd_get_48 (abfd, address); 1948 offset = (contents & howto->src_mask); 1949 offset += increment; 1950 contents = (contents & (~howto->src_mask)) | (offset & howto->src_mask); 1951 score_bfd_put_48 (abfd, contents, address); 1952 break; 1953 1954 default: 1955 addend += increment; 1956 contents = (contents & ~howto->dst_mask) | (addend & howto->dst_mask); 1957 score_bfd_put_32 (abfd, contents, address); 1958 break; 1959 } 1960 } 1961 1962 /* Perform a relocation as part of a final link. */ 1963 static bfd_reloc_status_type 1964 score_elf_final_link_relocate (reloc_howto_type *howto, 1965 bfd *input_bfd, 1966 bfd *output_bfd, 1967 asection *input_section, 1968 bfd_byte *contents, 1969 Elf_Internal_Rela *rel, 1970 Elf_Internal_Rela *relocs, 1971 bfd_vma symbol, 1972 struct bfd_link_info *info, 1973 const char *sym_name ATTRIBUTE_UNUSED, 1974 int sym_flags ATTRIBUTE_UNUSED, 1975 struct score_elf_link_hash_entry *h, 1976 asection **local_sections, 1977 bfd_boolean gp_disp_p) 1978 { 1979 unsigned long r_type; 1980 unsigned long r_symndx; 1981 bfd_byte *hit_data = contents + rel->r_offset; 1982 bfd_vma addend; 1983 /* The final GP value to be used for the relocatable, executable, or 1984 shared object file being produced. */ 1985 bfd_vma gp = MINUS_ONE; 1986 /* The place (section offset or address) of the storage unit being relocated. */ 1987 bfd_vma rel_addr; 1988 /* The offset into the global offset table at which the address of the relocation entry 1989 symbol, adjusted by the addend, resides during execution. */ 1990 bfd_vma g = MINUS_ONE; 1991 /* TRUE if the symbol referred to by this relocation is a local symbol. */ 1992 bfd_boolean local_p; 1993 /* The eventual value we will relocate. */ 1994 bfd_vma value = symbol; 1995 unsigned long hi16_addend, hi16_offset, hi16_value, uvalue, offset, abs_value = 0; 1996 1997 1998 if (elf_gp (output_bfd) == 0) 1999 { 2000 struct bfd_link_hash_entry *bh; 2001 asection *o; 2002 2003 bh = bfd_link_hash_lookup (info->hash, "_gp", 0, 0, 1); 2004 if (bh != NULL && bh->type == bfd_link_hash_defined) 2005 elf_gp (output_bfd) = (bh->u.def.value 2006 + bh->u.def.section->output_section->vma 2007 + bh->u.def.section->output_offset); 2008 else if (bfd_link_relocatable (info)) 2009 { 2010 bfd_vma lo = -1; 2011 2012 /* Find the GP-relative section with the lowest offset. */ 2013 for (o = output_bfd->sections; o != NULL; o = o->next) 2014 if (o->vma < lo) 2015 lo = o->vma; 2016 /* And calculate GP relative to that. */ 2017 elf_gp (output_bfd) = lo + ELF_SCORE_GP_OFFSET (input_bfd); 2018 } 2019 else 2020 { 2021 /* If the relocate_section function needs to do a reloc 2022 involving the GP value, it should make a reloc_dangerous 2023 callback to warn that GP is not defined. */ 2024 } 2025 } 2026 2027 /* Parse the relocation. */ 2028 r_symndx = ELF32_R_SYM (rel->r_info); 2029 r_type = ELF32_R_TYPE (rel->r_info); 2030 rel_addr = (input_section->output_section->vma + input_section->output_offset + rel->r_offset); 2031 local_p = score_elf_local_relocation_p (input_bfd, rel, local_sections, TRUE); 2032 2033 if (r_type == R_SCORE_GOT15) 2034 { 2035 const Elf_Internal_Rela *relend; 2036 const Elf_Internal_Rela *lo16_rel; 2037 bfd_vma lo_value = 0; 2038 2039 relend = relocs + input_section->reloc_count; 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 || (bfd_link_pic (info) 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 ((bfd_link_pic (info) 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 = 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 = 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 bfd_boolean 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 return FALSE; 2388 2389 bfd_reloc->howto = &elf32_score_howto_table[r_type]; 2390 return TRUE; 2391 } 2392 2393 /* Relocate an score ELF section. */ 2394 static bfd_boolean 2395 s3_bfd_score_elf_relocate_section (bfd *output_bfd, 2396 struct bfd_link_info *info, 2397 bfd *input_bfd, 2398 asection *input_section, 2399 bfd_byte *contents, 2400 Elf_Internal_Rela *relocs, 2401 Elf_Internal_Sym *local_syms, 2402 asection **local_sections) 2403 { 2404 Elf_Internal_Shdr *symtab_hdr; 2405 Elf_Internal_Rela *rel; 2406 Elf_Internal_Rela *relend; 2407 const char *name; 2408 unsigned long offset; 2409 unsigned long hi16_addend, hi16_offset, hi16_value, uvalue; 2410 size_t extsymoff; 2411 bfd_boolean gp_disp_p = FALSE; 2412 2413 /* Sort dynsym. */ 2414 if (elf_hash_table (info)->dynamic_sections_created) 2415 { 2416 bfd_size_type dynsecsymcount = 0; 2417 if (bfd_link_pic (info)) 2418 { 2419 asection * p; 2420 const struct elf_backend_data *bed = get_elf_backend_data (output_bfd); 2421 2422 for (p = output_bfd->sections; p ; p = p->next) 2423 if ((p->flags & SEC_EXCLUDE) == 0 2424 && (p->flags & SEC_ALLOC) != 0 2425 && !(*bed->elf_backend_omit_section_dynsym) (output_bfd, info, p)) 2426 ++ dynsecsymcount; 2427 } 2428 2429 if (!score_elf_sort_hash_table (info, dynsecsymcount + 1)) 2430 return FALSE; 2431 } 2432 2433 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 2434 extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info; 2435 rel = relocs; 2436 relend = relocs + input_section->reloc_count; 2437 for (; rel < relend; rel++) 2438 { 2439 int r_type; 2440 reloc_howto_type *howto; 2441 unsigned long r_symndx; 2442 Elf_Internal_Sym *sym; 2443 asection *sec; 2444 struct score_elf_link_hash_entry *h; 2445 bfd_vma relocation = 0; 2446 bfd_reloc_status_type r; 2447 arelent bfd_reloc; 2448 2449 r_symndx = ELF32_R_SYM (rel->r_info); 2450 r_type = ELF32_R_TYPE (rel->r_info); 2451 2452 if (! s3_bfd_score_info_to_howto (input_bfd, &bfd_reloc, (Elf_Internal_Rela *) rel)) 2453 continue; 2454 howto = bfd_reloc.howto; 2455 2456 h = NULL; 2457 sym = NULL; 2458 sec = NULL; 2459 2460 if (r_symndx < extsymoff) 2461 { 2462 sym = local_syms + r_symndx; 2463 sec = local_sections[r_symndx]; 2464 relocation = (sec->output_section->vma 2465 + sec->output_offset 2466 + sym->st_value); 2467 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); 2468 2469 if (!bfd_link_relocatable (info) 2470 && (sec->flags & SEC_MERGE) 2471 && ELF_ST_TYPE (sym->st_info) == STT_SECTION) 2472 { 2473 asection *msec; 2474 bfd_vma addend, value; 2475 2476 switch (r_type) 2477 { 2478 case R_SCORE_HI16: 2479 break; 2480 case R_SCORE_LO16: 2481 hi16_addend = score_bfd_get_32 (input_bfd, contents + rel->r_offset - 4); 2482 hi16_offset = ((((hi16_addend >> 16) & 0x3) << 15) | (hi16_addend & 0x7fff)) >> 1; 2483 value = score_bfd_get_32 (input_bfd, contents + rel->r_offset); 2484 offset = ((((value >> 16) & 0x3) << 15) | (value & 0x7fff)) >> 1; 2485 addend = (hi16_offset << 16) | (offset & 0xffff); 2486 msec = sec; 2487 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend); 2488 addend -= relocation; 2489 addend += msec->output_section->vma + msec->output_offset; 2490 uvalue = addend; 2491 hi16_offset = (uvalue >> 16) << 1; 2492 hi16_value = (hi16_addend & (~(howto->dst_mask))) 2493 | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000); 2494 score_bfd_put_32 (input_bfd, hi16_value, contents + rel->r_offset - 4); 2495 offset = (uvalue & 0xffff) << 1; 2496 value = (value & (~(howto->dst_mask))) 2497 | (offset & 0x7fff) | ((offset << 1) & 0x30000); 2498 score_bfd_put_32 (input_bfd, value, contents + rel->r_offset); 2499 break; 2500 2501 case R_SCORE_IMM32: 2502 { 2503 value = score_bfd_get_48 (input_bfd, contents + rel->r_offset); 2504 addend = ((value >> 5) & 0x3ff) 2505 | (((value >> 16) & 0x7fff) << 10) 2506 | (((value >> 32) & 0x7f) << 25); 2507 msec = sec; 2508 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend); 2509 addend -= relocation; 2510 addend += msec->output_section->vma + msec->output_offset; 2511 addend &= 0xffffffff; 2512 value = (value & ~howto->src_mask) 2513 | ((addend & 0x3ff) << 5) 2514 | (((addend >> 10) & 0x7fff) << 16) 2515 | (((addend >> 25) & 0x7f) << 32); 2516 score_bfd_put_48 (input_bfd, value, contents + rel->r_offset); 2517 break; 2518 } 2519 2520 case R_SCORE_IMM30: 2521 { 2522 int not_word_align_p = 0; 2523 value = score_bfd_get_48 (input_bfd, contents + rel->r_offset); 2524 addend = ((value >> 7) & 0xff) 2525 | (((value >> 16) & 0x7fff) << 8) 2526 | (((value >> 32) & 0x7f) << 23); 2527 addend <<= howto->rightshift; 2528 msec = sec; 2529 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend); 2530 addend -= relocation; 2531 addend += msec->output_section->vma + msec->output_offset; 2532 addend &= 0xffffffff; 2533 2534 /* Check lw48/sw48 rd, value/label word align. */ 2535 if ((addend & 0x3) != 0) 2536 not_word_align_p = 1; 2537 2538 addend >>= howto->rightshift; 2539 value = (value & ~howto->src_mask) 2540 | (((addend & 0xff) >> 0) << 7) 2541 | (((addend & 0x7fff00) >> 8) << 16) 2542 | (((addend & 0x3f800000) >> 23) << 32); 2543 score_bfd_put_48 (input_bfd, value, contents + rel->r_offset); 2544 2545 if (not_word_align_p) 2546 return bfd_reloc_other; 2547 else 2548 break; 2549 } 2550 2551 case R_SCORE_GOT_LO16: 2552 value = score_bfd_get_32 (input_bfd, contents + rel->r_offset); 2553 addend = (((value >> 16) & 0x3) << 14) | ((value & 0x7fff) >> 1); 2554 msec = sec; 2555 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) - relocation; 2556 addend += msec->output_section->vma + msec->output_offset; 2557 value = (value & (~(howto->dst_mask))) | ((addend & 0x3fff) << 1) 2558 | (((addend >> 14) & 0x3) << 16); 2559 2560 score_bfd_put_32 (input_bfd, value, contents + rel->r_offset); 2561 break; 2562 2563 case R_SCORE_ABS32: 2564 case R_SCORE_REL32: 2565 value = bfd_get_32 (input_bfd, contents + rel->r_offset); 2566 /* Get the (signed) value from the instruction. */ 2567 addend = value & howto->src_mask; 2568 if (addend & ((howto->src_mask + 1) >> 1)) 2569 { 2570 bfd_signed_vma mask; 2571 2572 mask = -1; 2573 mask &= ~howto->src_mask; 2574 addend |= mask; 2575 } 2576 msec = sec; 2577 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) - relocation; 2578 addend += msec->output_section->vma + msec->output_offset; 2579 value = (value & ~howto->dst_mask) | (addend & howto->dst_mask); 2580 bfd_put_32 (input_bfd, value, contents + rel->r_offset); 2581 break; 2582 2583 default: 2584 value = score_bfd_get_32 (input_bfd, contents + rel->r_offset); 2585 /* Get the (signed) value from the instruction. */ 2586 addend = value & howto->src_mask; 2587 if (addend & ((howto->src_mask + 1) >> 1)) 2588 { 2589 bfd_signed_vma mask; 2590 2591 mask = -1; 2592 mask &= ~howto->src_mask; 2593 addend |= mask; 2594 } 2595 msec = sec; 2596 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) - relocation; 2597 addend += msec->output_section->vma + msec->output_offset; 2598 value = (value & ~howto->dst_mask) | (addend & howto->dst_mask); 2599 score_bfd_put_32 (input_bfd, value, contents + rel->r_offset); 2600 break; 2601 } 2602 } 2603 } 2604 else 2605 { 2606 /* For global symbols we look up the symbol in the hash-table. */ 2607 h = ((struct score_elf_link_hash_entry *) 2608 elf_sym_hashes (input_bfd) [r_symndx - extsymoff]); 2609 2610 if (info->wrap_hash != NULL 2611 && (input_section->flags & SEC_DEBUGGING) != 0) 2612 h = ((struct score_elf_link_hash_entry *) 2613 unwrap_hash_lookup (info, input_bfd, &h->root.root)); 2614 2615 /* Find the real hash-table entry for this symbol. */ 2616 while (h->root.root.type == bfd_link_hash_indirect 2617 || h->root.root.type == bfd_link_hash_warning) 2618 h = (struct score_elf_link_hash_entry *) h->root.root.u.i.link; 2619 2620 /* Record the name of this symbol, for our caller. */ 2621 name = h->root.root.root.string; 2622 2623 /* See if this is the special GP_DISP_LABEL symbol. Note that such a 2624 symbol must always be a global symbol. */ 2625 if (strcmp (name, GP_DISP_LABEL) == 0) 2626 { 2627 /* Relocations against GP_DISP_LABEL are permitted only with 2628 R_SCORE_HI16 and R_SCORE_LO16 relocations. */ 2629 if (r_type != R_SCORE_HI16 && r_type != R_SCORE_LO16) 2630 return bfd_reloc_notsupported; 2631 2632 gp_disp_p = TRUE; 2633 } 2634 2635 /* If this symbol is defined, calculate its address. Note that 2636 GP_DISP_LABEL is a magic symbol, always implicitly defined by the 2637 linker, so it's inappropriate to check to see whether or not 2638 its defined. */ 2639 else if ((h->root.root.type == bfd_link_hash_defined 2640 || h->root.root.type == bfd_link_hash_defweak) 2641 && h->root.root.u.def.section) 2642 { 2643 sec = h->root.root.u.def.section; 2644 if (sec->output_section) 2645 relocation = (h->root.root.u.def.value 2646 + sec->output_section->vma 2647 + sec->output_offset); 2648 else 2649 { 2650 relocation = h->root.root.u.def.value; 2651 } 2652 } 2653 else if (h->root.root.type == bfd_link_hash_undefweak) 2654 /* We allow relocations against undefined weak symbols, giving 2655 it the value zero, so that you can undefined weak functions 2656 and check to see if they exist by looking at their addresses. */ 2657 relocation = 0; 2658 else if (info->unresolved_syms_in_objects == RM_IGNORE 2659 && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) 2660 relocation = 0; 2661 else if (strcmp (name, "_DYNAMIC_LINK") == 0) 2662 { 2663 /* If this is a dynamic link, we should have created a _DYNAMIC_LINK symbol 2664 in s3_bfd_score_elf_create_dynamic_sections. Otherwise, we should define 2665 the symbol with a value of 0. */ 2666 BFD_ASSERT (! bfd_link_pic (info)); 2667 BFD_ASSERT (bfd_get_section_by_name (output_bfd, ".dynamic") == NULL); 2668 relocation = 0; 2669 } 2670 else if (!bfd_link_relocatable (info)) 2671 { 2672 (*info->callbacks->undefined_symbol) 2673 (info, h->root.root.root.string, input_bfd, 2674 input_section, rel->r_offset, 2675 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR) 2676 || ELF_ST_VISIBILITY (h->root.other)); 2677 relocation = 0; 2678 } 2679 } 2680 2681 if (sec != NULL && discarded_section (sec)) 2682 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 2683 rel, 1, relend, howto, 0, contents); 2684 2685 if (bfd_link_relocatable (info)) 2686 { 2687 /* This is a relocatable link. We don't have to change 2688 anything, unless the reloc is against a section symbol, 2689 in which case we have to adjust according to where the 2690 section symbol winds up in the output section. */ 2691 if (r_symndx < symtab_hdr->sh_info) 2692 { 2693 sym = local_syms + r_symndx; 2694 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) 2695 { 2696 sec = local_sections[r_symndx]; 2697 score_elf_add_to_rel (input_bfd, contents + rel->r_offset, 2698 howto, (bfd_signed_vma) (sec->output_offset + sym->st_value)); 2699 } 2700 } 2701 continue; 2702 } 2703 2704 /* This is a final link. */ 2705 r = score_elf_final_link_relocate (howto, input_bfd, output_bfd, 2706 input_section, contents, rel, relocs, 2707 relocation, info, name, 2708 (h ? ELF_ST_TYPE ((unsigned int)h->root.root.type) : 2709 ELF_ST_TYPE ((unsigned int)sym->st_info)), h, local_sections, 2710 gp_disp_p); 2711 2712 if (r != bfd_reloc_ok) 2713 { 2714 const char *msg = (const char *)0; 2715 2716 switch (r) 2717 { 2718 case bfd_reloc_overflow: 2719 /* If the overflowing reloc was to an undefined symbol, 2720 we have already printed one error message and there 2721 is no point complaining again. */ 2722 if (!h || h->root.root.type != bfd_link_hash_undefined) 2723 (*info->callbacks->reloc_overflow) 2724 (info, NULL, name, howto->name, (bfd_vma) 0, 2725 input_bfd, input_section, rel->r_offset); 2726 break; 2727 case bfd_reloc_undefined: 2728 (*info->callbacks->undefined_symbol) 2729 (info, name, input_bfd, input_section, rel->r_offset, TRUE); 2730 break; 2731 2732 case bfd_reloc_outofrange: 2733 msg = _("internal error: out of range error"); 2734 goto common_error; 2735 2736 case bfd_reloc_notsupported: 2737 msg = _("internal error: unsupported relocation error"); 2738 goto common_error; 2739 2740 case bfd_reloc_dangerous: 2741 msg = _("internal error: dangerous error"); 2742 goto common_error; 2743 2744 /* Use bfd_reloc_other to check lw48, sw48 word align. */ 2745 case bfd_reloc_other: 2746 msg = _("address not word aligned"); 2747 goto common_error; 2748 2749 default: 2750 msg = _("internal error: unknown error"); 2751 /* Fall through. */ 2752 2753 common_error: 2754 (*info->callbacks->warning) (info, msg, name, input_bfd, 2755 input_section, rel->r_offset); 2756 break; 2757 } 2758 } 2759 } 2760 2761 return TRUE; 2762 } 2763 2764 /* Look through the relocs for a section during the first phase, and 2765 allocate space in the global offset table. */ 2766 static bfd_boolean 2767 s3_bfd_score_elf_check_relocs (bfd *abfd, 2768 struct bfd_link_info *info, 2769 asection *sec, 2770 const Elf_Internal_Rela *relocs) 2771 { 2772 bfd *dynobj; 2773 Elf_Internal_Shdr *symtab_hdr; 2774 struct elf_link_hash_entry **sym_hashes; 2775 struct score_got_info *g; 2776 size_t extsymoff; 2777 const Elf_Internal_Rela *rel; 2778 const Elf_Internal_Rela *rel_end; 2779 asection *sgot; 2780 asection *sreloc; 2781 2782 if (bfd_link_relocatable (info)) 2783 return TRUE; 2784 2785 dynobj = elf_hash_table (info)->dynobj; 2786 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 2787 sym_hashes = elf_sym_hashes (abfd); 2788 extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; 2789 2790 if (dynobj == NULL) 2791 { 2792 sgot = NULL; 2793 g = NULL; 2794 } 2795 else 2796 { 2797 sgot = score_elf_got_section (dynobj, FALSE); 2798 if (sgot == NULL) 2799 g = NULL; 2800 else 2801 { 2802 BFD_ASSERT (score_elf_section_data (sgot) != NULL); 2803 g = score_elf_section_data (sgot)->u.got_info; 2804 BFD_ASSERT (g != NULL); 2805 } 2806 } 2807 2808 sreloc = NULL; 2809 rel_end = relocs + sec->reloc_count; 2810 for (rel = relocs; rel < rel_end; ++rel) 2811 { 2812 unsigned long r_symndx; 2813 unsigned int r_type; 2814 struct elf_link_hash_entry *h; 2815 2816 r_symndx = ELF32_R_SYM (rel->r_info); 2817 r_type = ELF32_R_TYPE (rel->r_info); 2818 2819 if (r_symndx < extsymoff) 2820 { 2821 h = NULL; 2822 } 2823 else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr)) 2824 { 2825 _bfd_error_handler 2826 /* xgettext:c-format */ 2827 (_("%pB: malformed reloc detected for section %pA"), abfd, sec); 2828 bfd_set_error (bfd_error_bad_value); 2829 return FALSE; 2830 } 2831 else 2832 { 2833 h = sym_hashes[r_symndx - extsymoff]; 2834 2835 /* This may be an indirect symbol created because of a version. */ 2836 if (h != NULL) 2837 { 2838 while (h->root.type == bfd_link_hash_indirect) 2839 h = (struct elf_link_hash_entry *)h->root.u.i.link; 2840 } 2841 } 2842 2843 /* Some relocs require a global offset table. */ 2844 if (dynobj == NULL || sgot == NULL) 2845 { 2846 switch (r_type) 2847 { 2848 case R_SCORE_GOT15: 2849 case R_SCORE_CALL15: 2850 if (dynobj == NULL) 2851 elf_hash_table (info)->dynobj = dynobj = abfd; 2852 if (!score_elf_create_got_section (dynobj, info, FALSE)) 2853 return FALSE; 2854 g = score_elf_got_info (dynobj, &sgot); 2855 break; 2856 case R_SCORE_ABS32: 2857 case R_SCORE_REL32: 2858 if (dynobj == NULL 2859 && (bfd_link_pic (info) || h != NULL) 2860 && (sec->flags & SEC_ALLOC) != 0) 2861 elf_hash_table (info)->dynobj = dynobj = abfd; 2862 break; 2863 default: 2864 break; 2865 } 2866 } 2867 2868 if (!h && (r_type == R_SCORE_GOT_LO16)) 2869 { 2870 if (! score_elf_record_local_got_symbol (abfd, r_symndx, rel->r_addend, g)) 2871 return FALSE; 2872 } 2873 2874 switch (r_type) 2875 { 2876 case R_SCORE_CALL15: 2877 if (h == NULL) 2878 { 2879 _bfd_error_handler 2880 /* xgettext:c-format */ 2881 (_("%pB: CALL15 reloc at %#" PRIx64 " not against global symbol"), 2882 abfd, (uint64_t) rel->r_offset); 2883 bfd_set_error (bfd_error_bad_value); 2884 return FALSE; 2885 } 2886 else 2887 { 2888 /* This symbol requires a global offset table entry. */ 2889 if (! score_elf_record_global_got_symbol (h, abfd, info, g)) 2890 return FALSE; 2891 2892 /* We need a stub, not a plt entry for the undefined function. But we record 2893 it as if it needs plt. See _bfd_elf_adjust_dynamic_symbol. */ 2894 h->needs_plt = 1; 2895 h->type = STT_FUNC; 2896 } 2897 break; 2898 case R_SCORE_GOT15: 2899 if (h && ! score_elf_record_global_got_symbol (h, abfd, info, g)) 2900 return FALSE; 2901 break; 2902 case R_SCORE_ABS32: 2903 case R_SCORE_REL32: 2904 if ((bfd_link_pic (info) || h != NULL) 2905 && (sec->flags & SEC_ALLOC) != 0) 2906 { 2907 if (sreloc == NULL) 2908 { 2909 sreloc = score_elf_rel_dyn_section (dynobj, TRUE); 2910 if (sreloc == NULL) 2911 return FALSE; 2912 } 2913 #define SCORE_READONLY_SECTION (SEC_ALLOC | SEC_LOAD | SEC_READONLY) 2914 if (bfd_link_pic (info)) 2915 { 2916 /* When creating a shared object, we must copy these reloc types into 2917 the output file as R_SCORE_REL32 relocs. We make room for this reloc 2918 in the .rel.dyn reloc section. */ 2919 score_elf_allocate_dynamic_relocations (dynobj, 1); 2920 if ((sec->flags & SCORE_READONLY_SECTION) 2921 == SCORE_READONLY_SECTION) 2922 /* We tell the dynamic linker that there are 2923 relocations against the text segment. */ 2924 info->flags |= DF_TEXTREL; 2925 } 2926 else 2927 { 2928 struct score_elf_link_hash_entry *hscore; 2929 2930 /* We only need to copy this reloc if the symbol is 2931 defined in a dynamic object. */ 2932 hscore = (struct score_elf_link_hash_entry *)h; 2933 ++hscore->possibly_dynamic_relocs; 2934 if ((sec->flags & SCORE_READONLY_SECTION) 2935 == SCORE_READONLY_SECTION) 2936 /* We need it to tell the dynamic linker if there 2937 are relocations against the text segment. */ 2938 hscore->readonly_reloc = TRUE; 2939 } 2940 2941 /* Even though we don't directly need a GOT entry for this symbol, 2942 a symbol must have a dynamic symbol table index greater that 2943 DT_SCORE_GOTSYM if there are dynamic relocations against it. */ 2944 if (h != NULL) 2945 { 2946 if (dynobj == NULL) 2947 elf_hash_table (info)->dynobj = dynobj = abfd; 2948 if (! score_elf_create_got_section (dynobj, info, TRUE)) 2949 return FALSE; 2950 g = score_elf_got_info (dynobj, &sgot); 2951 if (! score_elf_record_global_got_symbol (h, abfd, info, g)) 2952 return FALSE; 2953 } 2954 } 2955 break; 2956 2957 /* This relocation describes the C++ object vtable hierarchy. 2958 Reconstruct it for later use during GC. */ 2959 case R_SCORE_GNU_VTINHERIT: 2960 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 2961 return FALSE; 2962 break; 2963 2964 /* This relocation describes which C++ vtable entries are actually 2965 used. Record for later use during GC. */ 2966 case R_SCORE_GNU_VTENTRY: 2967 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) 2968 return FALSE; 2969 break; 2970 default: 2971 break; 2972 } 2973 2974 /* We must not create a stub for a symbol that has relocations 2975 related to taking the function's address. */ 2976 switch (r_type) 2977 { 2978 default: 2979 if (h != NULL) 2980 { 2981 struct score_elf_link_hash_entry *sh; 2982 2983 sh = (struct score_elf_link_hash_entry *) h; 2984 sh->no_fn_stub = TRUE; 2985 } 2986 break; 2987 case R_SCORE_CALL15: 2988 break; 2989 } 2990 } 2991 2992 return TRUE; 2993 } 2994 2995 static bfd_boolean 2996 s3_bfd_score_elf_add_symbol_hook (bfd *abfd, 2997 struct bfd_link_info *info ATTRIBUTE_UNUSED, 2998 Elf_Internal_Sym *sym, 2999 const char **namep ATTRIBUTE_UNUSED, 3000 flagword *flagsp ATTRIBUTE_UNUSED, 3001 asection **secp, 3002 bfd_vma *valp) 3003 { 3004 switch (sym->st_shndx) 3005 { 3006 case SHN_COMMON: 3007 if (sym->st_size > elf_gp_size (abfd)) 3008 break; 3009 /* Fall through. */ 3010 case SHN_SCORE_SCOMMON: 3011 *secp = bfd_make_section_old_way (abfd, ".scommon"); 3012 (*secp)->flags |= SEC_IS_COMMON; 3013 *valp = sym->st_size; 3014 break; 3015 } 3016 3017 return TRUE; 3018 } 3019 3020 static void 3021 s3_bfd_score_elf_symbol_processing (bfd *abfd, asymbol *asym) 3022 { 3023 elf_symbol_type *elfsym; 3024 3025 elfsym = (elf_symbol_type *) asym; 3026 switch (elfsym->internal_elf_sym.st_shndx) 3027 { 3028 case SHN_COMMON: 3029 if (asym->value > elf_gp_size (abfd)) 3030 break; 3031 /* Fall through. */ 3032 case SHN_SCORE_SCOMMON: 3033 if (score_elf_scom_section.name == NULL) 3034 { 3035 /* Initialize the small common section. */ 3036 score_elf_scom_section.name = ".scommon"; 3037 score_elf_scom_section.flags = SEC_IS_COMMON; 3038 score_elf_scom_section.output_section = &score_elf_scom_section; 3039 score_elf_scom_section.symbol = &score_elf_scom_symbol; 3040 score_elf_scom_section.symbol_ptr_ptr = &score_elf_scom_symbol_ptr; 3041 score_elf_scom_symbol.name = ".scommon"; 3042 score_elf_scom_symbol.flags = BSF_SECTION_SYM; 3043 score_elf_scom_symbol.section = &score_elf_scom_section; 3044 score_elf_scom_symbol_ptr = &score_elf_scom_symbol; 3045 } 3046 asym->section = &score_elf_scom_section; 3047 asym->value = elfsym->internal_elf_sym.st_size; 3048 break; 3049 } 3050 } 3051 3052 static int 3053 s3_bfd_score_elf_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED, 3054 const char *name ATTRIBUTE_UNUSED, 3055 Elf_Internal_Sym *sym, 3056 asection *input_sec, 3057 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) 3058 { 3059 /* If we see a common symbol, which implies a relocatable link, then 3060 if a symbol was small common in an input file, mark it as small 3061 common in the output file. */ 3062 if (sym->st_shndx == SHN_COMMON && strcmp (input_sec->name, ".scommon") == 0) 3063 sym->st_shndx = SHN_SCORE_SCOMMON; 3064 3065 return 1; 3066 } 3067 3068 static bfd_boolean 3069 s3_bfd_score_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, 3070 asection *sec, 3071 int *retval) 3072 { 3073 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) 3074 { 3075 *retval = SHN_SCORE_SCOMMON; 3076 return TRUE; 3077 } 3078 3079 return FALSE; 3080 } 3081 3082 /* Adjust a symbol defined by a dynamic object and referenced by a 3083 regular object. The current definition is in some section of the 3084 dynamic object, but we're not including those sections. We have to 3085 change the definition to something the rest of the link can understand. */ 3086 static bfd_boolean 3087 s3_bfd_score_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 3088 struct elf_link_hash_entry *h) 3089 { 3090 bfd *dynobj; 3091 struct score_elf_link_hash_entry *hscore; 3092 asection *s; 3093 3094 dynobj = elf_hash_table (info)->dynobj; 3095 3096 /* Make sure we know what is going on here. */ 3097 BFD_ASSERT (dynobj != NULL 3098 && (h->needs_plt 3099 || h->is_weakalias 3100 || (h->def_dynamic && h->ref_regular && !h->def_regular))); 3101 3102 /* If this symbol is defined in a dynamic object, we need to copy 3103 any R_SCORE_ABS32 or R_SCORE_REL32 relocs against it into the output 3104 file. */ 3105 hscore = (struct score_elf_link_hash_entry *)h; 3106 if (!bfd_link_relocatable (info) 3107 && hscore->possibly_dynamic_relocs != 0 3108 && (h->root.type == bfd_link_hash_defweak || !h->def_regular)) 3109 { 3110 score_elf_allocate_dynamic_relocations (dynobj, hscore->possibly_dynamic_relocs); 3111 if (hscore->readonly_reloc) 3112 /* We tell the dynamic linker that there are relocations 3113 against the text segment. */ 3114 info->flags |= DF_TEXTREL; 3115 } 3116 3117 /* For a function, create a stub, if allowed. */ 3118 if (!hscore->no_fn_stub && h->needs_plt) 3119 { 3120 if (!elf_hash_table (info)->dynamic_sections_created) 3121 return TRUE; 3122 3123 /* If this symbol is not defined in a regular file, then set 3124 the symbol to the stub location. This is required to make 3125 function pointers compare as equal between the normal 3126 executable and the shared library. */ 3127 if (!h->def_regular) 3128 { 3129 /* We need .stub section. */ 3130 s = bfd_get_linker_section (dynobj, SCORE_ELF_STUB_SECTION_NAME); 3131 BFD_ASSERT (s != NULL); 3132 3133 h->root.u.def.section = s; 3134 h->root.u.def.value = s->size; 3135 3136 /* XXX Write this stub address somewhere. */ 3137 h->plt.offset = s->size; 3138 3139 /* Make room for this stub code. */ 3140 s->size += SCORE_FUNCTION_STUB_SIZE; 3141 3142 /* The last half word of the stub will be filled with the index 3143 of this symbol in .dynsym section. */ 3144 return TRUE; 3145 } 3146 } 3147 else if ((h->type == STT_FUNC) && !h->needs_plt) 3148 { 3149 /* This will set the entry for this symbol in the GOT to 0, and 3150 the dynamic linker will take care of this. */ 3151 h->root.u.def.value = 0; 3152 return TRUE; 3153 } 3154 3155 /* If this is a weak symbol, and there is a real definition, the 3156 processor independent code will have arranged for us to see the 3157 real definition first, and we can just use the same value. */ 3158 if (h->is_weakalias) 3159 { 3160 struct elf_link_hash_entry *def = weakdef (h); 3161 BFD_ASSERT (def->root.type == bfd_link_hash_defined); 3162 h->root.u.def.section = def->root.u.def.section; 3163 h->root.u.def.value = def->root.u.def.value; 3164 return TRUE; 3165 } 3166 3167 /* This is a reference to a symbol defined by a dynamic object which 3168 is not a function. */ 3169 return TRUE; 3170 } 3171 3172 /* This function is called after all the input files have been read, 3173 and the input sections have been assigned to output sections. */ 3174 static bfd_boolean 3175 s3_bfd_score_elf_always_size_sections (bfd *output_bfd, 3176 struct bfd_link_info *info) 3177 { 3178 bfd *dynobj; 3179 asection *s; 3180 struct score_got_info *g; 3181 int i; 3182 bfd_size_type loadable_size = 0; 3183 bfd_size_type local_gotno; 3184 bfd *sub; 3185 3186 dynobj = elf_hash_table (info)->dynobj; 3187 if (dynobj == NULL) 3188 /* Relocatable links don't have it. */ 3189 return TRUE; 3190 3191 g = score_elf_got_info (dynobj, &s); 3192 if (s == NULL) 3193 return TRUE; 3194 3195 /* Calculate the total loadable size of the output. That will give us the 3196 maximum number of GOT_PAGE entries required. */ 3197 for (sub = info->input_bfds; sub; sub = sub->link.next) 3198 { 3199 asection *subsection; 3200 3201 for (subsection = sub->sections; 3202 subsection; 3203 subsection = subsection->next) 3204 { 3205 if ((subsection->flags & SEC_ALLOC) == 0) 3206 continue; 3207 loadable_size += ((subsection->size + 0xf) 3208 &~ (bfd_size_type) 0xf); 3209 } 3210 } 3211 3212 /* There has to be a global GOT entry for every symbol with 3213 a dynamic symbol table index of DT_SCORE_GOTSYM or 3214 higher. Therefore, it make sense to put those symbols 3215 that need GOT entries at the end of the symbol table. We 3216 do that here. */ 3217 if (! score_elf_sort_hash_table (info, 1)) 3218 return FALSE; 3219 3220 if (g->global_gotsym != NULL) 3221 i = elf_hash_table (info)->dynsymcount - g->global_gotsym->dynindx; 3222 else 3223 /* If there are no global symbols, or none requiring 3224 relocations, then GLOBAL_GOTSYM will be NULL. */ 3225 i = 0; 3226 3227 /* In the worst case, we'll get one stub per dynamic symbol. */ 3228 loadable_size += SCORE_FUNCTION_STUB_SIZE * i; 3229 3230 /* Assume there are two loadable segments consisting of 3231 contiguous sections. Is 5 enough? */ 3232 local_gotno = (loadable_size >> 16) + 5; 3233 3234 g->local_gotno += local_gotno; 3235 s->size += g->local_gotno * SCORE_ELF_GOT_SIZE (output_bfd); 3236 3237 g->global_gotno = i; 3238 s->size += i * SCORE_ELF_GOT_SIZE (output_bfd); 3239 3240 score_elf_resolve_final_got_entries (g); 3241 3242 if (s->size > SCORE_ELF_GOT_MAX_SIZE (output_bfd)) 3243 { 3244 /* Fixme. Error message or Warning message should be issued here. */ 3245 } 3246 3247 return TRUE; 3248 } 3249 3250 /* Set the sizes of the dynamic sections. */ 3251 static bfd_boolean 3252 s3_bfd_score_elf_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) 3253 { 3254 bfd *dynobj; 3255 asection *s; 3256 bfd_boolean reltext; 3257 3258 dynobj = elf_hash_table (info)->dynobj; 3259 BFD_ASSERT (dynobj != NULL); 3260 3261 if (elf_hash_table (info)->dynamic_sections_created) 3262 { 3263 /* Set the contents of the .interp section to the interpreter. */ 3264 if (bfd_link_executable (info) && !info->nointerp) 3265 { 3266 s = bfd_get_linker_section (dynobj, ".interp"); 3267 BFD_ASSERT (s != NULL); 3268 s->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1; 3269 s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; 3270 } 3271 } 3272 3273 /* The check_relocs and adjust_dynamic_symbol entry points have 3274 determined the sizes of the various dynamic sections. Allocate 3275 memory for them. */ 3276 reltext = FALSE; 3277 for (s = dynobj->sections; s != NULL; s = s->next) 3278 { 3279 const char *name; 3280 3281 if ((s->flags & SEC_LINKER_CREATED) == 0) 3282 continue; 3283 3284 /* It's OK to base decisions on the section name, because none 3285 of the dynobj section names depend upon the input files. */ 3286 name = bfd_get_section_name (dynobj, s); 3287 3288 if (CONST_STRNEQ (name, ".rel")) 3289 { 3290 if (s->size == 0) 3291 { 3292 /* We only strip the section if the output section name 3293 has the same name. Otherwise, there might be several 3294 input sections for this output section. FIXME: This 3295 code is probably not needed these days anyhow, since 3296 the linker now does not create empty output sections. */ 3297 if (s->output_section != NULL 3298 && strcmp (name, 3299 bfd_get_section_name (s->output_section->owner, 3300 s->output_section)) == 0) 3301 s->flags |= SEC_EXCLUDE; 3302 } 3303 else 3304 { 3305 const char *outname; 3306 asection *target; 3307 3308 /* If this relocation section applies to a read only 3309 section, then we probably need a DT_TEXTREL entry. 3310 If the relocation section is .rel.dyn, we always 3311 assert a DT_TEXTREL entry rather than testing whether 3312 there exists a relocation to a read only section or 3313 not. */ 3314 outname = bfd_get_section_name (output_bfd, s->output_section); 3315 target = bfd_get_section_by_name (output_bfd, outname + 4); 3316 if ((target != NULL 3317 && (target->flags & SEC_READONLY) != 0 3318 && (target->flags & SEC_ALLOC) != 0) || strcmp (outname, ".rel.dyn") == 0) 3319 reltext = TRUE; 3320 3321 /* We use the reloc_count field as a counter if we need 3322 to copy relocs into the output file. */ 3323 if (strcmp (name, ".rel.dyn") != 0) 3324 s->reloc_count = 0; 3325 } 3326 } 3327 else if (CONST_STRNEQ (name, ".got")) 3328 { 3329 /* s3_bfd_score_elf_always_size_sections() has already done 3330 most of the work, but some symbols may have been mapped 3331 to versions that we must now resolve in the got_entries 3332 hash tables. */ 3333 } 3334 else if (strcmp (name, SCORE_ELF_STUB_SECTION_NAME) == 0) 3335 { 3336 /* IRIX rld assumes that the function stub isn't at the end 3337 of .text section. So put a dummy. XXX */ 3338 s->size += SCORE_FUNCTION_STUB_SIZE; 3339 } 3340 else if (! CONST_STRNEQ (name, ".init")) 3341 { 3342 /* It's not one of our sections, so don't allocate space. */ 3343 continue; 3344 } 3345 3346 /* Allocate memory for the section contents. */ 3347 s->contents = bfd_zalloc (dynobj, s->size); 3348 if (s->contents == NULL && s->size != 0) 3349 { 3350 bfd_set_error (bfd_error_no_memory); 3351 return FALSE; 3352 } 3353 } 3354 3355 if (elf_hash_table (info)->dynamic_sections_created) 3356 { 3357 /* Add some entries to the .dynamic section. We fill in the 3358 values later, in s3_bfd_score_elf_finish_dynamic_sections, but we 3359 must add the entries now so that we get the correct size for 3360 the .dynamic section. The DT_DEBUG entry is filled in by the 3361 dynamic linker and used by the debugger. */ 3362 3363 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0)) 3364 return FALSE; 3365 3366 if (reltext) 3367 info->flags |= DF_TEXTREL; 3368 3369 if ((info->flags & DF_TEXTREL) != 0) 3370 { 3371 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0)) 3372 return FALSE; 3373 } 3374 3375 if (! SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0)) 3376 return FALSE; 3377 3378 if (score_elf_rel_dyn_section (dynobj, FALSE)) 3379 { 3380 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0)) 3381 return FALSE; 3382 3383 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0)) 3384 return FALSE; 3385 3386 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0)) 3387 return FALSE; 3388 } 3389 3390 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_BASE_ADDRESS, 0)) 3391 return FALSE; 3392 3393 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_LOCAL_GOTNO, 0)) 3394 return FALSE; 3395 3396 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_SYMTABNO, 0)) 3397 return FALSE; 3398 3399 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_UNREFEXTNO, 0)) 3400 return FALSE; 3401 3402 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_GOTSYM, 0)) 3403 return FALSE; 3404 3405 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_HIPAGENO, 0)) 3406 return FALSE; 3407 } 3408 3409 return TRUE; 3410 } 3411 3412 static bfd_boolean 3413 s3_bfd_score_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 3414 { 3415 struct elf_link_hash_entry *h; 3416 struct bfd_link_hash_entry *bh; 3417 flagword flags; 3418 asection *s; 3419 3420 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 3421 | SEC_LINKER_CREATED | SEC_READONLY); 3422 3423 /* ABI requests the .dynamic section to be read only. */ 3424 s = bfd_get_linker_section (abfd, ".dynamic"); 3425 if (s != NULL) 3426 { 3427 if (!bfd_set_section_flags (abfd, s, flags)) 3428 return FALSE; 3429 } 3430 3431 /* We need to create .got section. */ 3432 if (!score_elf_create_got_section (abfd, info, FALSE)) 3433 return FALSE; 3434 3435 if (!score_elf_rel_dyn_section (elf_hash_table (info)->dynobj, TRUE)) 3436 return FALSE; 3437 3438 /* Create .stub section. */ 3439 if (bfd_get_linker_section (abfd, SCORE_ELF_STUB_SECTION_NAME) == NULL) 3440 { 3441 s = bfd_make_section_anyway_with_flags (abfd, SCORE_ELF_STUB_SECTION_NAME, 3442 flags | SEC_CODE); 3443 if (s == NULL 3444 || !bfd_set_section_alignment (abfd, s, 2)) 3445 3446 return FALSE; 3447 } 3448 3449 if (!bfd_link_pic (info)) 3450 { 3451 const char *name; 3452 3453 name = "_DYNAMIC_LINK"; 3454 bh = NULL; 3455 if (!(_bfd_generic_link_add_one_symbol 3456 (info, abfd, name, BSF_GLOBAL, bfd_abs_section_ptr, 3457 (bfd_vma) 0, NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) 3458 return FALSE; 3459 3460 h = (struct elf_link_hash_entry *)bh; 3461 h->non_elf = 0; 3462 h->def_regular = 1; 3463 h->type = STT_SECTION; 3464 3465 if (!bfd_elf_link_record_dynamic_symbol (info, h)) 3466 return FALSE; 3467 } 3468 3469 return TRUE; 3470 } 3471 3472 3473 /* Finish up dynamic symbol handling. We set the contents of various 3474 dynamic sections here. */ 3475 static bfd_boolean 3476 s3_bfd_score_elf_finish_dynamic_symbol (bfd *output_bfd, 3477 struct bfd_link_info *info, 3478 struct elf_link_hash_entry *h, 3479 Elf_Internal_Sym *sym) 3480 { 3481 bfd *dynobj; 3482 asection *sgot; 3483 struct score_got_info *g; 3484 const char *name; 3485 3486 dynobj = elf_hash_table (info)->dynobj; 3487 3488 if (h->plt.offset != MINUS_ONE) 3489 { 3490 asection *s; 3491 bfd_byte stub[SCORE_FUNCTION_STUB_SIZE]; 3492 3493 /* This symbol has a stub. Set it up. */ 3494 BFD_ASSERT (h->dynindx != -1); 3495 3496 s = bfd_get_linker_section (dynobj, SCORE_ELF_STUB_SECTION_NAME); 3497 BFD_ASSERT (s != NULL); 3498 3499 /* FIXME: Can h->dynindex be more than 64K? */ 3500 if (h->dynindx & 0xffff0000) 3501 return FALSE; 3502 3503 /* Fill the stub. */ 3504 score_bfd_put_32 (output_bfd, STUB_LW, stub); 3505 score_bfd_put_32 (output_bfd, STUB_MOVE, stub + 4); 3506 score_bfd_put_32 (output_bfd, STUB_LI16 | (h->dynindx << 1), stub + 8); 3507 score_bfd_put_32 (output_bfd, STUB_BRL, stub + 12); 3508 3509 BFD_ASSERT (h->plt.offset <= s->size); 3510 memcpy (s->contents + h->plt.offset, stub, SCORE_FUNCTION_STUB_SIZE); 3511 3512 /* Mark the symbol as undefined. plt.offset != -1 occurs 3513 only for the referenced symbol. */ 3514 sym->st_shndx = SHN_UNDEF; 3515 3516 /* The run-time linker uses the st_value field of the symbol 3517 to reset the global offset table entry for this external 3518 to its stub address when unlinking a shared object. */ 3519 sym->st_value = (s->output_section->vma + s->output_offset + h->plt.offset); 3520 } 3521 3522 BFD_ASSERT (h->dynindx != -1 || h->forced_local); 3523 3524 sgot = score_elf_got_section (dynobj, FALSE); 3525 BFD_ASSERT (sgot != NULL); 3526 BFD_ASSERT (score_elf_section_data (sgot) != NULL); 3527 g = score_elf_section_data (sgot)->u.got_info; 3528 BFD_ASSERT (g != NULL); 3529 3530 /* Run through the global symbol table, creating GOT entries for all 3531 the symbols that need them. */ 3532 if (g->global_gotsym != NULL && h->dynindx >= g->global_gotsym->dynindx) 3533 { 3534 bfd_vma offset; 3535 bfd_vma value; 3536 3537 value = sym->st_value; 3538 offset = score_elf_global_got_index (dynobj, h); 3539 score_bfd_put_32 (output_bfd, value, sgot->contents + offset); 3540 } 3541 3542 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ 3543 name = h->root.root.string; 3544 if (h == elf_hash_table (info)->hdynamic 3545 || h == elf_hash_table (info)->hgot) 3546 sym->st_shndx = SHN_ABS; 3547 else if (strcmp (name, "_DYNAMIC_LINK") == 0) 3548 { 3549 sym->st_shndx = SHN_ABS; 3550 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); 3551 sym->st_value = 1; 3552 } 3553 else if (strcmp (name, GP_DISP_LABEL) == 0) 3554 { 3555 sym->st_shndx = SHN_ABS; 3556 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); 3557 sym->st_value = elf_gp (output_bfd); 3558 } 3559 3560 return TRUE; 3561 } 3562 3563 /* Finish up the dynamic sections. */ 3564 static bfd_boolean 3565 s3_bfd_score_elf_finish_dynamic_sections (bfd *output_bfd, 3566 struct bfd_link_info *info) 3567 { 3568 bfd *dynobj; 3569 asection *sdyn; 3570 asection *sgot; 3571 asection *s; 3572 struct score_got_info *g; 3573 3574 dynobj = elf_hash_table (info)->dynobj; 3575 3576 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 3577 3578 sgot = score_elf_got_section (dynobj, FALSE); 3579 if (sgot == NULL) 3580 g = NULL; 3581 else 3582 { 3583 BFD_ASSERT (score_elf_section_data (sgot) != NULL); 3584 g = score_elf_section_data (sgot)->u.got_info; 3585 BFD_ASSERT (g != NULL); 3586 } 3587 3588 if (elf_hash_table (info)->dynamic_sections_created) 3589 { 3590 bfd_byte *b; 3591 3592 BFD_ASSERT (sdyn != NULL); 3593 BFD_ASSERT (g != NULL); 3594 3595 for (b = sdyn->contents; 3596 b < sdyn->contents + sdyn->size; 3597 b += SCORE_ELF_DYN_SIZE (dynobj)) 3598 { 3599 Elf_Internal_Dyn dyn; 3600 const char *name; 3601 size_t elemsize; 3602 bfd_boolean swap_out_p; 3603 3604 /* Read in the current dynamic entry. */ 3605 (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); 3606 3607 /* Assume that we're going to modify it and write it out. */ 3608 swap_out_p = TRUE; 3609 3610 switch (dyn.d_tag) 3611 { 3612 case DT_RELENT: 3613 dyn.d_un.d_val = SCORE_ELF_REL_SIZE (dynobj); 3614 break; 3615 3616 case DT_STRSZ: 3617 /* Rewrite DT_STRSZ. */ 3618 dyn.d_un.d_val 3619 = _bfd_elf_strtab_size (elf_hash_table (info)->dynstr); 3620 break; 3621 3622 case DT_PLTGOT: 3623 s = elf_hash_table (info)->sgot; 3624 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 3625 break; 3626 3627 case DT_SCORE_BASE_ADDRESS: 3628 s = output_bfd->sections; 3629 BFD_ASSERT (s != NULL); 3630 dyn.d_un.d_ptr = s->vma & ~(bfd_vma) 0xffff; 3631 break; 3632 3633 case DT_SCORE_LOCAL_GOTNO: 3634 dyn.d_un.d_val = g->local_gotno; 3635 break; 3636 3637 case DT_SCORE_UNREFEXTNO: 3638 /* The index into the dynamic symbol table which is the 3639 entry of the first external symbol that is not 3640 referenced within the same object. */ 3641 dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1; 3642 break; 3643 3644 case DT_SCORE_GOTSYM: 3645 if (g->global_gotsym) 3646 { 3647 dyn.d_un.d_val = g->global_gotsym->dynindx; 3648 break; 3649 } 3650 /* In case if we don't have global got symbols we default 3651 to setting DT_SCORE_GOTSYM to the same value as 3652 DT_SCORE_SYMTABNO. */ 3653 /* Fall through. */ 3654 3655 case DT_SCORE_SYMTABNO: 3656 name = ".dynsym"; 3657 elemsize = SCORE_ELF_SYM_SIZE (output_bfd); 3658 s = bfd_get_linker_section (dynobj, name); 3659 dyn.d_un.d_val = s->size / elemsize; 3660 break; 3661 3662 case DT_SCORE_HIPAGENO: 3663 dyn.d_un.d_val = g->local_gotno - SCORE_RESERVED_GOTNO; 3664 break; 3665 3666 default: 3667 swap_out_p = FALSE; 3668 break; 3669 } 3670 3671 if (swap_out_p) 3672 (*get_elf_backend_data (dynobj)->s->swap_dyn_out) (dynobj, &dyn, b); 3673 } 3674 } 3675 3676 /* The first entry of the global offset table will be filled at 3677 runtime. The second entry will be used by some runtime loaders. 3678 This isn't the case of IRIX rld. */ 3679 if (sgot != NULL && sgot->size > 0) 3680 { 3681 score_bfd_put_32 (output_bfd, 0, sgot->contents); 3682 score_bfd_put_32 (output_bfd, 0x80000000, sgot->contents + SCORE_ELF_GOT_SIZE (output_bfd)); 3683 } 3684 3685 if (sgot != NULL) 3686 elf_section_data (sgot->output_section)->this_hdr.sh_entsize 3687 = SCORE_ELF_GOT_SIZE (output_bfd); 3688 3689 3690 /* We need to sort the entries of the dynamic relocation section. */ 3691 s = score_elf_rel_dyn_section (dynobj, FALSE); 3692 3693 if (s != NULL && s->size > (bfd_vma)2 * SCORE_ELF_REL_SIZE (output_bfd)) 3694 { 3695 reldyn_sorting_bfd = output_bfd; 3696 qsort ((Elf32_External_Rel *) s->contents + 1, s->reloc_count - 1, 3697 sizeof (Elf32_External_Rel), score_elf_sort_dynamic_relocs); 3698 } 3699 3700 return TRUE; 3701 } 3702 3703 /* This function set up the ELF section header for a BFD section in preparation for writing 3704 it out. This is where the flags and type fields are set for unusual sections. */ 3705 static bfd_boolean 3706 s3_bfd_score_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, 3707 Elf_Internal_Shdr *hdr, 3708 asection *sec) 3709 { 3710 const char *name; 3711 3712 name = bfd_get_section_name (abfd, sec); 3713 3714 if (strcmp (name, ".got") == 0 3715 || strcmp (name, ".srdata") == 0 3716 || strcmp (name, ".sdata") == 0 3717 || strcmp (name, ".sbss") == 0) 3718 hdr->sh_flags |= SHF_SCORE_GPREL; 3719 3720 return TRUE; 3721 } 3722 3723 /* This function do additional processing on the ELF section header before writing 3724 it out. This is used to set the flags and type fields for some sections. */ 3725 3726 /* assign_file_positions_except_relocs() check section flag and if it is allocatable, 3727 warning message will be issued. backend_fake_section is called before 3728 assign_file_positions_except_relocs(); backend_section_processing after it. so, we 3729 modify section flag there, but not backend_fake_section. */ 3730 static bfd_boolean 3731 s3_bfd_score_elf_section_processing (bfd *abfd ATTRIBUTE_UNUSED, Elf_Internal_Shdr *hdr) 3732 { 3733 if (hdr->bfd_section != NULL) 3734 { 3735 const char *name = bfd_get_section_name (abfd, hdr->bfd_section); 3736 3737 if (strcmp (name, ".sdata") == 0) 3738 { 3739 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_SCORE_GPREL; 3740 hdr->sh_type = SHT_PROGBITS; 3741 } 3742 else if (strcmp (name, ".sbss") == 0) 3743 { 3744 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_SCORE_GPREL; 3745 hdr->sh_type = SHT_NOBITS; 3746 } 3747 else if (strcmp (name, ".srdata") == 0) 3748 { 3749 hdr->sh_flags |= SHF_ALLOC | SHF_SCORE_GPREL; 3750 hdr->sh_type = SHT_PROGBITS; 3751 } 3752 } 3753 3754 return TRUE; 3755 } 3756 3757 static bfd_boolean 3758 s3_bfd_score_elf_write_section (bfd *output_bfd, asection *sec, bfd_byte *contents) 3759 { 3760 bfd_byte *to, *from, *end; 3761 int i; 3762 3763 if (strcmp (sec->name, ".pdr") != 0) 3764 return FALSE; 3765 3766 if (score_elf_section_data (sec)->u.tdata == NULL) 3767 return FALSE; 3768 3769 to = contents; 3770 end = contents + sec->size; 3771 for (from = contents, i = 0; from < end; from += PDR_SIZE, i++) 3772 { 3773 if ((score_elf_section_data (sec)->u.tdata)[i] == 1) 3774 continue; 3775 3776 if (to != from) 3777 memcpy (to, from, PDR_SIZE); 3778 3779 to += PDR_SIZE; 3780 } 3781 bfd_set_section_contents (output_bfd, sec->output_section, contents, 3782 (file_ptr) sec->output_offset, sec->size); 3783 3784 return TRUE; 3785 } 3786 3787 /* Copy data from a SCORE ELF indirect symbol to its direct symbol, hiding the old 3788 indirect symbol. Process additional relocation information. */ 3789 static void 3790 s3_bfd_score_elf_copy_indirect_symbol (struct bfd_link_info *info, 3791 struct elf_link_hash_entry *dir, 3792 struct elf_link_hash_entry *ind) 3793 { 3794 struct score_elf_link_hash_entry *dirscore, *indscore; 3795 3796 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 3797 3798 if (ind->root.type != bfd_link_hash_indirect) 3799 return; 3800 3801 dirscore = (struct score_elf_link_hash_entry *) dir; 3802 indscore = (struct score_elf_link_hash_entry *) ind; 3803 dirscore->possibly_dynamic_relocs += indscore->possibly_dynamic_relocs; 3804 3805 if (indscore->readonly_reloc) 3806 dirscore->readonly_reloc = TRUE; 3807 3808 if (indscore->no_fn_stub) 3809 dirscore->no_fn_stub = TRUE; 3810 } 3811 3812 /* Remove information about discarded functions from other sections which mention them. */ 3813 static bfd_boolean 3814 s3_bfd_score_elf_discard_info (bfd *abfd, struct elf_reloc_cookie *cookie, 3815 struct bfd_link_info *info) 3816 { 3817 asection *o; 3818 bfd_boolean ret = FALSE; 3819 unsigned char *tdata; 3820 size_t i, skip; 3821 3822 o = bfd_get_section_by_name (abfd, ".pdr"); 3823 if ((!o) || (o->size == 0) || (o->size % PDR_SIZE != 0) 3824 || (o->output_section != NULL && bfd_is_abs_section (o->output_section))) 3825 return FALSE; 3826 3827 tdata = bfd_zmalloc (o->size / PDR_SIZE); 3828 if (!tdata) 3829 return FALSE; 3830 3831 cookie->rels = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, info->keep_memory); 3832 if (!cookie->rels) 3833 { 3834 free (tdata); 3835 return FALSE; 3836 } 3837 3838 cookie->rel = cookie->rels; 3839 cookie->relend = cookie->rels + o->reloc_count; 3840 3841 for (i = 0, skip = 0; i < o->size; i++) 3842 { 3843 if (bfd_elf_reloc_symbol_deleted_p (i * PDR_SIZE, cookie)) 3844 { 3845 tdata[i] = 1; 3846 skip++; 3847 } 3848 } 3849 3850 if (skip != 0) 3851 { 3852 score_elf_section_data (o)->u.tdata = tdata; 3853 o->size -= skip * PDR_SIZE; 3854 ret = TRUE; 3855 } 3856 else 3857 free (tdata); 3858 3859 if (!info->keep_memory) 3860 free (cookie->rels); 3861 3862 return ret; 3863 } 3864 3865 /* Signal that discard_info() has removed the discarded relocations for this section. */ 3866 static bfd_boolean 3867 s3_bfd_score_elf_ignore_discarded_relocs (asection *sec) 3868 { 3869 if (strcmp (sec->name, ".pdr") == 0) 3870 return TRUE; 3871 return FALSE; 3872 } 3873 3874 /* Return the section that should be marked against GC for a given 3875 relocation. */ 3876 static asection * 3877 s3_bfd_score_elf_gc_mark_hook (asection *sec, 3878 struct bfd_link_info *info, 3879 Elf_Internal_Rela *rel, 3880 struct elf_link_hash_entry *h, 3881 Elf_Internal_Sym *sym) 3882 { 3883 if (h != NULL) 3884 switch (ELF32_R_TYPE (rel->r_info)) 3885 { 3886 case R_SCORE_GNU_VTINHERIT: 3887 case R_SCORE_GNU_VTENTRY: 3888 return NULL; 3889 } 3890 3891 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 3892 } 3893 3894 /* Support for core dump NOTE sections. */ 3895 3896 static bfd_boolean 3897 s3_bfd_score_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 3898 { 3899 int offset; 3900 unsigned int raw_size; 3901 3902 switch (note->descsz) 3903 { 3904 default: 3905 return FALSE; 3906 3907 case 148: /* Linux/Score 32-bit. */ 3908 /* pr_cursig */ 3909 elf_tdata (abfd)->core->signal 3910 = score_bfd_get_16 (abfd, note->descdata + 12); 3911 3912 /* pr_pid */ 3913 elf_tdata (abfd)->core->lwpid 3914 = score_bfd_get_32 (abfd, note->descdata + 24); 3915 3916 /* pr_reg */ 3917 offset = 72; 3918 raw_size = 72; 3919 3920 break; 3921 } 3922 3923 /* Make a ".reg/999" section. */ 3924 return _bfd_elfcore_make_pseudosection (abfd, ".reg", raw_size, 3925 note->descpos + offset); 3926 } 3927 3928 static bfd_boolean 3929 s3_bfd_score_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 3930 { 3931 switch (note->descsz) 3932 { 3933 default: 3934 return FALSE; 3935 3936 case 124: /* Linux/Score elf_prpsinfo. */ 3937 elf_tdata (abfd)->core->program 3938 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); 3939 elf_tdata (abfd)->core->command 3940 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); 3941 } 3942 3943 /* Note that for some reason, a spurious space is tacked 3944 onto the end of the args in some (at least one anyway) 3945 implementations, so strip it off if it exists. */ 3946 3947 { 3948 char *command = elf_tdata (abfd)->core->command; 3949 int n = strlen (command); 3950 3951 if (0 < n && command[n - 1] == ' ') 3952 command[n - 1] = '\0'; 3953 } 3954 3955 return TRUE; 3956 } 3957 3958 3959 /* Score BFD functions. */ 3960 static reloc_howto_type * 3961 s3_elf32_score_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code) 3962 { 3963 unsigned int i; 3964 3965 for (i = 0; i < ARRAY_SIZE (elf32_score_reloc_map); i++) 3966 if (elf32_score_reloc_map[i].bfd_reloc_val == code) 3967 return &elf32_score_howto_table[elf32_score_reloc_map[i].elf_reloc_val]; 3968 3969 return NULL; 3970 } 3971 3972 static reloc_howto_type * 3973 elf32_score_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 3974 const char *r_name) 3975 { 3976 unsigned int i; 3977 3978 for (i = 0; 3979 i < (sizeof (elf32_score_howto_table) 3980 / sizeof (elf32_score_howto_table[0])); 3981 i++) 3982 if (elf32_score_howto_table[i].name != NULL 3983 && strcasecmp (elf32_score_howto_table[i].name, r_name) == 0) 3984 return &elf32_score_howto_table[i]; 3985 3986 return NULL; 3987 } 3988 3989 static bfd_boolean 3990 s3_elf32_score_print_private_bfd_data (bfd *abfd, void * ptr) 3991 { 3992 FILE *file = (FILE *) ptr; 3993 3994 BFD_ASSERT (abfd != NULL && ptr != NULL); 3995 3996 /* Print normal ELF private data. */ 3997 _bfd_elf_print_private_bfd_data (abfd, ptr); 3998 3999 /* xgettext:c-format */ 4000 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); 4001 if (elf_elfheader (abfd)->e_flags & EF_SCORE_PIC) 4002 { 4003 fprintf (file, _(" [pic]")); 4004 } 4005 if (elf_elfheader (abfd)->e_flags & EF_SCORE_FIXDEP) 4006 { 4007 fprintf (file, _(" [fix dep]")); 4008 } 4009 fputc ('\n', file); 4010 4011 return TRUE; 4012 } 4013 4014 static bfd_boolean 4015 s3_elf32_score_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) 4016 { 4017 bfd *obfd = info->output_bfd; 4018 flagword in_flags; 4019 flagword out_flags; 4020 4021 if (!_bfd_generic_verify_endian_match (ibfd, info)) 4022 return FALSE; 4023 4024 in_flags = elf_elfheader (ibfd)->e_flags; 4025 out_flags = elf_elfheader (obfd)->e_flags; 4026 4027 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour 4028 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 4029 return TRUE; 4030 4031 in_flags = elf_elfheader (ibfd)->e_flags; 4032 out_flags = elf_elfheader (obfd)->e_flags; 4033 4034 if (! elf_flags_init (obfd)) 4035 { 4036 elf_flags_init (obfd) = TRUE; 4037 elf_elfheader (obfd)->e_flags = in_flags; 4038 4039 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) 4040 && bfd_get_arch_info (obfd)->the_default) 4041 { 4042 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); 4043 } 4044 4045 return TRUE; 4046 } 4047 4048 if (((in_flags & EF_SCORE_PIC) != 0) != ((out_flags & EF_SCORE_PIC) != 0)) 4049 _bfd_error_handler 4050 (_("%pB: warning: linking PIC files with non-PIC files"), ibfd); 4051 4052 /* FIXME: Maybe dependency fix compatibility should be checked here. */ 4053 4054 return TRUE; 4055 } 4056 4057 static bfd_boolean 4058 s3_elf32_score_new_section_hook (bfd *abfd, asection *sec) 4059 { 4060 struct _score_elf_section_data *sdata; 4061 bfd_size_type amt = sizeof (*sdata); 4062 4063 sdata = bfd_zalloc (abfd, amt); 4064 if (sdata == NULL) 4065 return FALSE; 4066 sec->used_by_bfd = sdata; 4067 4068 return _bfd_elf_new_section_hook (abfd, sec); 4069 } 4070 4071 /*****************************************************************************/ 4072 4073 /* s3_s7: backend hooks. */ 4074 static bfd_boolean 4075 _bfd_score_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, 4076 arelent *bfd_reloc, 4077 Elf_Internal_Rela *elf_reloc) 4078 { 4079 if (bfd_get_mach (abfd) == bfd_mach_score3) 4080 return s3_bfd_score_info_to_howto (abfd, bfd_reloc, elf_reloc); 4081 else 4082 return s7_bfd_score_info_to_howto (abfd, bfd_reloc, elf_reloc); 4083 } 4084 4085 static bfd_boolean 4086 _bfd_score_elf_relocate_section (bfd *output_bfd, 4087 struct bfd_link_info *info, 4088 bfd *input_bfd, 4089 asection *input_section, 4090 bfd_byte *contents, 4091 Elf_Internal_Rela *relocs, 4092 Elf_Internal_Sym *local_syms, 4093 asection **local_sections) 4094 { 4095 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4096 return s3_bfd_score_elf_relocate_section (output_bfd, 4097 info, input_bfd, input_section, contents, relocs, 4098 local_syms, local_sections); 4099 else 4100 return s7_bfd_score_elf_relocate_section (output_bfd, 4101 info, input_bfd, input_section, contents, relocs, 4102 local_syms, local_sections); 4103 } 4104 4105 static bfd_boolean 4106 _bfd_score_elf_check_relocs (bfd *abfd, 4107 struct bfd_link_info *info, 4108 asection *sec, 4109 const Elf_Internal_Rela *relocs) 4110 { 4111 if (bfd_get_mach (abfd) == bfd_mach_score3) 4112 return s3_bfd_score_elf_check_relocs (abfd, info, sec, relocs); 4113 else 4114 return s7_bfd_score_elf_check_relocs (abfd, info, sec, relocs); 4115 } 4116 4117 static bfd_boolean 4118 _bfd_score_elf_add_symbol_hook (bfd *abfd, 4119 struct bfd_link_info *info ATTRIBUTE_UNUSED, 4120 Elf_Internal_Sym *sym, 4121 const char **namep ATTRIBUTE_UNUSED, 4122 flagword *flagsp ATTRIBUTE_UNUSED, 4123 asection **secp, 4124 bfd_vma *valp) 4125 { 4126 if (bfd_get_mach (abfd) == bfd_mach_score3) 4127 return s3_bfd_score_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, 4128 secp, valp); 4129 else 4130 return s7_bfd_score_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, 4131 secp, valp); 4132 } 4133 4134 static void 4135 _bfd_score_elf_symbol_processing (bfd *abfd, asymbol *asym) 4136 { 4137 if (bfd_get_mach (abfd) == bfd_mach_score3) 4138 return s3_bfd_score_elf_symbol_processing (abfd, asym); 4139 else 4140 return s7_bfd_score_elf_symbol_processing (abfd, asym); 4141 } 4142 4143 static int 4144 _bfd_score_elf_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED, 4145 const char *name ATTRIBUTE_UNUSED, 4146 Elf_Internal_Sym *sym, 4147 asection *input_sec, 4148 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) 4149 { 4150 /* If link a empty .o, then this filed is NULL. */ 4151 if (info->input_bfds == NULL) 4152 { 4153 /* If we see a common symbol, which implies a relocatable link, then 4154 if a symbol was small common in an input file, mark it as small 4155 common in the output file. */ 4156 if (sym->st_shndx == SHN_COMMON && strcmp (input_sec->name, ".scommon") == 0) 4157 sym->st_shndx = SHN_SCORE_SCOMMON; 4158 return 1; 4159 } 4160 4161 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4162 return s3_bfd_score_elf_link_output_symbol_hook (info, name, sym, input_sec, h); 4163 else 4164 return s7_bfd_score_elf_link_output_symbol_hook (info, name, sym, input_sec, h); 4165 } 4166 4167 static bfd_boolean 4168 _bfd_score_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, 4169 asection *sec, 4170 int *retval) 4171 { 4172 if (bfd_get_mach (abfd) == bfd_mach_score3) 4173 return s3_bfd_score_elf_section_from_bfd_section (abfd, sec, retval); 4174 else 4175 return s7_bfd_score_elf_section_from_bfd_section (abfd, sec, retval); 4176 } 4177 4178 static bfd_boolean 4179 _bfd_score_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 4180 struct elf_link_hash_entry *h) 4181 { 4182 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4183 return s3_bfd_score_elf_adjust_dynamic_symbol (info, h); 4184 else 4185 return s7_bfd_score_elf_adjust_dynamic_symbol (info, h); 4186 } 4187 4188 static bfd_boolean 4189 _bfd_score_elf_always_size_sections (bfd *output_bfd, 4190 struct bfd_link_info *info) 4191 { 4192 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4193 return s3_bfd_score_elf_always_size_sections (output_bfd, info); 4194 else 4195 return s7_bfd_score_elf_always_size_sections (output_bfd, info); 4196 } 4197 4198 static bfd_boolean 4199 _bfd_score_elf_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) 4200 { 4201 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4202 return s3_bfd_score_elf_size_dynamic_sections (output_bfd, info); 4203 else 4204 return s7_bfd_score_elf_size_dynamic_sections (output_bfd, info); 4205 } 4206 4207 static bfd_boolean 4208 _bfd_score_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 4209 { 4210 if (bfd_get_mach (abfd) == bfd_mach_score3) 4211 return s3_bfd_score_elf_create_dynamic_sections (abfd, info); 4212 else 4213 return s7_bfd_score_elf_create_dynamic_sections (abfd, info); 4214 } 4215 4216 static bfd_boolean 4217 _bfd_score_elf_finish_dynamic_symbol (bfd *output_bfd, 4218 struct bfd_link_info *info, 4219 struct elf_link_hash_entry *h, 4220 Elf_Internal_Sym *sym) 4221 { 4222 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4223 return s3_bfd_score_elf_finish_dynamic_symbol (output_bfd, info, h, sym); 4224 else 4225 return s7_bfd_score_elf_finish_dynamic_symbol (output_bfd, info, h, sym); 4226 } 4227 4228 static bfd_boolean 4229 _bfd_score_elf_finish_dynamic_sections (bfd *output_bfd, 4230 struct bfd_link_info *info) 4231 { 4232 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4233 return s3_bfd_score_elf_finish_dynamic_sections (output_bfd, info); 4234 else 4235 return s7_bfd_score_elf_finish_dynamic_sections (output_bfd, info); 4236 } 4237 4238 static bfd_boolean 4239 _bfd_score_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, 4240 Elf_Internal_Shdr *hdr, 4241 asection *sec) 4242 { 4243 if (bfd_get_mach (abfd) == bfd_mach_score3) 4244 return s3_bfd_score_elf_fake_sections (abfd, hdr, sec); 4245 else 4246 return s7_bfd_score_elf_fake_sections (abfd, hdr, sec); 4247 } 4248 4249 static bfd_boolean 4250 _bfd_score_elf_section_processing (bfd *abfd ATTRIBUTE_UNUSED, Elf_Internal_Shdr *hdr) 4251 { 4252 if (bfd_get_mach (abfd) == bfd_mach_score3) 4253 return s3_bfd_score_elf_section_processing (abfd, hdr); 4254 else 4255 return s7_bfd_score_elf_section_processing (abfd, hdr); 4256 } 4257 4258 static bfd_boolean 4259 _bfd_score_elf_write_section (bfd *output_bfd, 4260 struct bfd_link_info *link_info ATTRIBUTE_UNUSED, 4261 asection *sec, bfd_byte *contents) 4262 { 4263 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4264 return s3_bfd_score_elf_write_section (output_bfd, sec, contents); 4265 else 4266 return s7_bfd_score_elf_write_section (output_bfd, sec, contents); 4267 } 4268 4269 static void 4270 _bfd_score_elf_copy_indirect_symbol (struct bfd_link_info *info, 4271 struct elf_link_hash_entry *dir, 4272 struct elf_link_hash_entry *ind) 4273 { 4274 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4275 return s3_bfd_score_elf_copy_indirect_symbol (info, dir, ind); 4276 else 4277 return s7_bfd_score_elf_copy_indirect_symbol (info, dir, ind); 4278 } 4279 4280 static void 4281 _bfd_score_elf_hide_symbol (struct bfd_link_info *info, 4282 struct elf_link_hash_entry *entry, 4283 bfd_boolean force_local) 4284 { 4285 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4286 return s3_bfd_score_elf_hide_symbol (info, entry, force_local); 4287 else 4288 return s7_bfd_score_elf_hide_symbol (info, entry, force_local); 4289 } 4290 4291 static bfd_boolean 4292 _bfd_score_elf_discard_info (bfd *abfd, struct elf_reloc_cookie *cookie, 4293 struct bfd_link_info *info) 4294 { 4295 if (bfd_get_mach (abfd) == bfd_mach_score3) 4296 return s3_bfd_score_elf_discard_info (abfd, cookie, info); 4297 else 4298 return s7_bfd_score_elf_discard_info (abfd, cookie, info); 4299 } 4300 4301 static bfd_boolean 4302 _bfd_score_elf_ignore_discarded_relocs (asection *sec) 4303 { 4304 if (bfd_get_mach (sec->owner) == bfd_mach_score3) 4305 return s3_bfd_score_elf_ignore_discarded_relocs (sec); 4306 else 4307 return s7_bfd_score_elf_ignore_discarded_relocs (sec); 4308 } 4309 4310 static asection * 4311 _bfd_score_elf_gc_mark_hook (asection *sec, 4312 struct bfd_link_info *info, 4313 Elf_Internal_Rela *rel, 4314 struct elf_link_hash_entry *h, 4315 Elf_Internal_Sym *sym) 4316 { 4317 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4318 return s3_bfd_score_elf_gc_mark_hook (sec, info, rel, h, sym); 4319 else 4320 return s7_bfd_score_elf_gc_mark_hook (sec, info, rel, h, sym); 4321 } 4322 4323 static bfd_boolean 4324 _bfd_score_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 4325 { 4326 if (bfd_get_mach (abfd) == bfd_mach_score3) 4327 return s3_bfd_score_elf_grok_prstatus (abfd, note); 4328 else 4329 return s7_bfd_score_elf_grok_prstatus (abfd, note); 4330 } 4331 4332 static bfd_boolean 4333 _bfd_score_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 4334 { 4335 if (bfd_get_mach (abfd) == bfd_mach_score3) 4336 return s3_bfd_score_elf_grok_psinfo (abfd, note); 4337 else 4338 return s7_bfd_score_elf_grok_psinfo (abfd, note); 4339 } 4340 4341 static reloc_howto_type * 4342 elf32_score_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code) 4343 { 4344 /* s3: NOTE!!! 4345 gas will call elf32_score_reloc_type_lookup, and don't write elf file. 4346 So just using score3, but we don't know ld will call this or not. 4347 If so, this way can't work. */ 4348 4349 if (score3) 4350 return s3_elf32_score_reloc_type_lookup (abfd, code); 4351 else 4352 return s7_elf32_score_reloc_type_lookup (abfd, code); 4353 } 4354 4355 /* Create a score elf linker hash table. 4356 This is a copy of _bfd_elf_link_hash_table_create() except with a 4357 different hash table entry creation function. */ 4358 4359 static struct bfd_link_hash_table * 4360 elf32_score_link_hash_table_create (bfd *abfd) 4361 { 4362 struct elf_link_hash_table *ret; 4363 bfd_size_type amt = sizeof (struct elf_link_hash_table); 4364 4365 ret = (struct elf_link_hash_table *) bfd_zmalloc (amt); 4366 if (ret == NULL) 4367 return NULL; 4368 4369 if (!_bfd_elf_link_hash_table_init (ret, abfd, score_elf_link_hash_newfunc, 4370 sizeof (struct score_elf_link_hash_entry), 4371 GENERIC_ELF_DATA)) 4372 { 4373 free (ret); 4374 return NULL; 4375 } 4376 4377 return &ret->root; 4378 } 4379 4380 static bfd_boolean 4381 elf32_score_print_private_bfd_data (bfd *abfd, void * ptr) 4382 { 4383 if (bfd_get_mach (abfd) == bfd_mach_score3) 4384 return s3_elf32_score_print_private_bfd_data (abfd, ptr); 4385 else 4386 return s7_elf32_score_print_private_bfd_data (abfd, ptr); 4387 } 4388 4389 static bfd_boolean 4390 elf32_score_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) 4391 { 4392 if (bfd_get_mach (info->output_bfd) == bfd_mach_score3) 4393 return s3_elf32_score_merge_private_bfd_data (ibfd, info); 4394 else 4395 return s7_elf32_score_merge_private_bfd_data (ibfd, info); 4396 } 4397 4398 static bfd_boolean 4399 elf32_score_new_section_hook (bfd *abfd, asection *sec) 4400 { 4401 if (bfd_get_mach (abfd) == bfd_mach_score3) 4402 return s3_elf32_score_new_section_hook (abfd, sec); 4403 else 4404 return s7_elf32_score_new_section_hook (abfd, sec); 4405 } 4406 4407 4408 /* s3_s7: don't need to split. */ 4409 4410 /* Set the right machine number. */ 4411 static bfd_boolean 4412 _bfd_score_elf_score_object_p (bfd * abfd) 4413 { 4414 int e_set = bfd_mach_score7; 4415 4416 if (elf_elfheader (abfd)->e_machine == EM_SCORE) 4417 { 4418 int e_mach = elf_elfheader (abfd)->e_flags & EF_SCORE_MACH & EF_OMIT_PIC_FIXDD; 4419 switch (e_mach) 4420 { 4421 /* Set default target is score7. */ 4422 default: 4423 case E_SCORE_MACH_SCORE7: 4424 e_set = bfd_mach_score7; 4425 break; 4426 4427 case E_SCORE_MACH_SCORE3: 4428 e_set = bfd_mach_score3; 4429 break; 4430 } 4431 } 4432 4433 return bfd_default_set_arch_mach (abfd, bfd_arch_score, e_set); 4434 } 4435 4436 bfd_boolean 4437 _bfd_score_elf_common_definition (Elf_Internal_Sym *sym) 4438 { 4439 return (sym->st_shndx == SHN_COMMON || sym->st_shndx == SHN_SCORE_SCOMMON); 4440 } 4441 4442 /*****************************************************************************/ 4443 4444 4445 #define USE_REL 1 4446 #define TARGET_LITTLE_SYM score_elf32_le_vec 4447 #define TARGET_LITTLE_NAME "elf32-littlescore" 4448 #define TARGET_BIG_SYM score_elf32_be_vec 4449 #define TARGET_BIG_NAME "elf32-bigscore" 4450 #define ELF_ARCH bfd_arch_score 4451 #define ELF_MACHINE_CODE EM_SCORE 4452 #define ELF_MACHINE_ALT1 EM_SCORE_OLD 4453 #define ELF_MAXPAGESIZE 0x8000 4454 4455 #define elf_info_to_howto NULL 4456 #define elf_info_to_howto_rel _bfd_score_info_to_howto 4457 #define elf_backend_relocate_section _bfd_score_elf_relocate_section 4458 #define elf_backend_check_relocs _bfd_score_elf_check_relocs 4459 #define elf_backend_add_symbol_hook _bfd_score_elf_add_symbol_hook 4460 #define elf_backend_symbol_processing _bfd_score_elf_symbol_processing 4461 #define elf_backend_link_output_symbol_hook \ 4462 _bfd_score_elf_link_output_symbol_hook 4463 #define elf_backend_section_from_bfd_section \ 4464 _bfd_score_elf_section_from_bfd_section 4465 #define elf_backend_adjust_dynamic_symbol \ 4466 _bfd_score_elf_adjust_dynamic_symbol 4467 #define elf_backend_always_size_sections \ 4468 _bfd_score_elf_always_size_sections 4469 #define elf_backend_size_dynamic_sections \ 4470 _bfd_score_elf_size_dynamic_sections 4471 #define elf_backend_omit_section_dynsym _bfd_elf_omit_section_dynsym_all 4472 #define elf_backend_create_dynamic_sections \ 4473 _bfd_score_elf_create_dynamic_sections 4474 #define elf_backend_finish_dynamic_symbol \ 4475 _bfd_score_elf_finish_dynamic_symbol 4476 #define elf_backend_finish_dynamic_sections \ 4477 _bfd_score_elf_finish_dynamic_sections 4478 #define elf_backend_fake_sections _bfd_score_elf_fake_sections 4479 #define elf_backend_section_processing _bfd_score_elf_section_processing 4480 #define elf_backend_write_section _bfd_score_elf_write_section 4481 #define elf_backend_copy_indirect_symbol _bfd_score_elf_copy_indirect_symbol 4482 #define elf_backend_hide_symbol _bfd_score_elf_hide_symbol 4483 #define elf_backend_discard_info _bfd_score_elf_discard_info 4484 #define elf_backend_ignore_discarded_relocs \ 4485 _bfd_score_elf_ignore_discarded_relocs 4486 #define elf_backend_gc_mark_hook _bfd_score_elf_gc_mark_hook 4487 #define elf_backend_grok_prstatus _bfd_score_elf_grok_prstatus 4488 #define elf_backend_grok_psinfo _bfd_score_elf_grok_psinfo 4489 #define elf_backend_can_gc_sections 1 4490 #define elf_backend_want_plt_sym 0 4491 #define elf_backend_got_header_size (4 * SCORE_RESERVED_GOTNO) 4492 #define elf_backend_plt_header_size 0 4493 #define elf_backend_collect TRUE 4494 #define elf_backend_type_change_ok TRUE 4495 #define elf_backend_object_p _bfd_score_elf_score_object_p 4496 4497 #define bfd_elf32_bfd_reloc_type_lookup elf32_score_reloc_type_lookup 4498 #define bfd_elf32_bfd_reloc_name_lookup \ 4499 elf32_score_reloc_name_lookup 4500 #define bfd_elf32_bfd_link_hash_table_create elf32_score_link_hash_table_create 4501 #define bfd_elf32_bfd_print_private_bfd_data elf32_score_print_private_bfd_data 4502 #define bfd_elf32_bfd_merge_private_bfd_data elf32_score_merge_private_bfd_data 4503 #define bfd_elf32_new_section_hook elf32_score_new_section_hook 4504 4505 #include "elf32-target.h" 4506