elf32-score.c revision 1.6.4.1
1 /* 32-bit ELF support for S+core. 2 Copyright (C) 2006-2017 Free Software Foundation, Inc. 3 Contributed by 4 Brain.lin (brain.lin (at) sunplusct.com) 5 Mei Ligang (ligang (at) sunnorth.com.cn) 6 Pei-Lin Tsai (pltsai (at) sunplus.com) 7 8 This file is part of BFD, the Binary File Descriptor library. 9 10 This program is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 3 of the License, or 13 (at your option) any later version. 14 15 This program is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with this program; if not, write to the Free Software 22 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 23 MA 02110-1301, USA. */ 24 25 #include "sysdep.h" 26 #include "bfd.h" 27 #include "libbfd.h" 28 #include "libiberty.h" 29 #include "elf-bfd.h" 30 #include "elf/score.h" 31 #include "elf/common.h" 32 #include "elf/internal.h" 33 #include "hashtab.h" 34 #include "elf32-score.h" 35 36 37 int score3 = 0; 38 int score7 = 1; 39 40 /* The SCORE ELF linker needs additional information for each symbol in 41 the global hash table. */ 42 struct score_elf_link_hash_entry 43 { 44 struct elf_link_hash_entry root; 45 46 /* Number of R_SCORE_ABS32, R_SCORE_REL32 relocs against this symbol. */ 47 unsigned int possibly_dynamic_relocs; 48 49 /* If the R_SCORE_ABS32, R_SCORE_REL32 reloc is against a readonly section. */ 50 bfd_boolean readonly_reloc; 51 52 /* We must not create a stub for a symbol that has relocations related to 53 taking the function's address, i.e. any but R_SCORE_CALL15 ones. */ 54 bfd_boolean no_fn_stub; 55 56 /* Are we forced local? This will only be set if we have converted 57 the initial global GOT entry to a local GOT entry. */ 58 bfd_boolean forced_local; 59 }; 60 61 /* Traverse a score ELF linker hash table. */ 62 #define score_elf_link_hash_traverse(table, func, info) \ 63 (elf_link_hash_traverse \ 64 ((table), \ 65 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ 66 (info))) 67 68 /* This structure is used to hold .got entries while estimating got sizes. */ 69 struct score_got_entry 70 { 71 /* The input bfd in which the symbol is defined. */ 72 bfd *abfd; 73 /* The index of the symbol, as stored in the relocation r_info, if 74 we have a local symbol; -1 otherwise. */ 75 long symndx; 76 union 77 { 78 /* If abfd == NULL, an address that must be stored in the got. */ 79 bfd_vma address; 80 /* If abfd != NULL && symndx != -1, the addend of the relocation 81 that should be added to the symbol value. */ 82 bfd_vma addend; 83 /* If abfd != NULL && symndx == -1, the hash table entry 84 corresponding to a global symbol in the got (or, local, if 85 h->forced_local). */ 86 struct score_elf_link_hash_entry *h; 87 } d; 88 89 /* The offset from the beginning of the .got section to the entry 90 corresponding to this symbol+addend. If it's a global symbol 91 whose offset is yet to be decided, it's going to be -1. */ 92 long gotidx; 93 }; 94 95 /* This structure is passed to score_elf_sort_hash_table_f when sorting 96 the dynamic symbols. */ 97 98 struct score_elf_hash_sort_data 99 { 100 /* The symbol in the global GOT with the lowest dynamic symbol table index. */ 101 struct elf_link_hash_entry *low; 102 /* The least dynamic symbol table index corresponding to a symbol with a GOT entry. */ 103 long min_got_dynindx; 104 /* The greatest dynamic symbol table index corresponding to a symbol 105 with a GOT entry that is not referenced (e.g., a dynamic symbol 106 with dynamic relocations pointing to it from non-primary GOTs). */ 107 long max_unref_got_dynindx; 108 /* The greatest dynamic symbol table index not corresponding to a 109 symbol without a GOT entry. */ 110 long max_non_got_dynindx; 111 }; 112 113 struct score_got_info 114 { 115 /* The global symbol in the GOT with the lowest index in the dynamic 116 symbol table. */ 117 struct elf_link_hash_entry *global_gotsym; 118 /* The number of global .got entries. */ 119 unsigned int global_gotno; 120 /* The number of local .got entries. */ 121 unsigned int local_gotno; 122 /* The number of local .got entries we have used. */ 123 unsigned int assigned_gotno; 124 /* A hash table holding members of the got. */ 125 struct htab *got_entries; 126 /* In multi-got links, a pointer to the next got (err, rather, most 127 of the time, it points to the previous got). */ 128 struct score_got_info *next; 129 }; 130 131 /* A structure used to count GOT entries, for GOT entry or ELF symbol table traversal. */ 132 struct _score_elf_section_data 133 { 134 struct bfd_elf_section_data elf; 135 union 136 { 137 struct score_got_info *got_info; 138 bfd_byte *tdata; 139 } 140 u; 141 }; 142 143 #define score_elf_section_data(sec) \ 144 ((struct _score_elf_section_data *) elf_section_data (sec)) 145 146 /* The size of a symbol-table entry. */ 147 #define SCORE_ELF_SYM_SIZE(abfd) \ 148 (get_elf_backend_data (abfd)->s->sizeof_sym) 149 150 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value 151 from smaller values. Start with zero, widen, *then* decrement. */ 152 #define MINUS_ONE (((bfd_vma)0) - 1) 153 #define MINUS_TWO (((bfd_vma)0) - 2) 154 155 #define PDR_SIZE 32 156 157 158 /* The number of local .got entries we reserve. */ 159 #define SCORE_RESERVED_GOTNO (2) 160 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" 161 162 /* The offset of $gp from the beginning of the .got section. */ 163 #define ELF_SCORE_GP_OFFSET(abfd) (0x3ff0) 164 /* The maximum size of the GOT for it to be addressable using 15-bit offsets from $gp. */ 165 #define SCORE_ELF_GOT_MAX_SIZE(abfd) (ELF_SCORE_GP_OFFSET(abfd) + 0x3fff) 166 167 #define SCORE_ELF_STUB_SECTION_NAME (".SCORE.stub") 168 #define SCORE_FUNCTION_STUB_SIZE (16) 169 170 #define STUB_LW 0xc3bcc010 /* lw r29, [r28, -0x3ff0] */ 171 #define STUB_MOVE 0x8363bc56 /* mv r27, r3 */ 172 #define STUB_LI16 0x87548000 /* ori r26, .dynsym_index */ 173 #define STUB_BRL 0x801dbc09 /* brl r29 */ 174 175 #define SCORE_ELF_GOT_SIZE(abfd) \ 176 (get_elf_backend_data (abfd)->s->arch_size / 8) 177 178 #define SCORE_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \ 179 (_bfd_elf_add_dynamic_entry (info, (bfd_vma) tag, (bfd_vma) val)) 180 181 /* The size of an external dynamic table entry. */ 182 #define SCORE_ELF_DYN_SIZE(abfd) \ 183 (get_elf_backend_data (abfd)->s->sizeof_dyn) 184 185 /* The size of an external REL relocation. */ 186 #define SCORE_ELF_REL_SIZE(abfd) \ 187 (get_elf_backend_data (abfd)->s->sizeof_rel) 188 189 /* The default alignment for sections, as a power of two. */ 190 #define SCORE_ELF_LOG_FILE_ALIGN(abfd)\ 191 (get_elf_backend_data (abfd)->s->log_file_align) 192 193 static bfd_byte *hi16_rel_addr; 194 195 /* This will be used when we sort the dynamic relocation records. */ 196 static bfd *reldyn_sorting_bfd; 197 198 /* SCORE ELF uses two common sections. One is the usual one, and the 199 other is for small objects. All the small objects are kept 200 together, and then referenced via the gp pointer, which yields 201 faster assembler code. This is what we use for the small common 202 section. This approach is copied from ecoff.c. */ 203 static asection score_elf_scom_section; 204 static asymbol score_elf_scom_symbol; 205 static asymbol *score_elf_scom_symbol_ptr; 206 207 static bfd_vma 208 score_bfd_get_16 (bfd *abfd, const void *data) 209 { 210 return bfd_get_16 (abfd, data); 211 } 212 213 static bfd_vma 214 score3_bfd_getl32 (const void *p) 215 { 216 const bfd_byte *addr = p; 217 unsigned long v; 218 219 v = (unsigned long) addr[2]; 220 v |= (unsigned long) addr[3] << 8; 221 v |= (unsigned long) addr[0] << 16; 222 v |= (unsigned long) addr[1] << 24; 223 return v; 224 } 225 226 static bfd_vma 227 score3_bfd_getl48 (const void *p) 228 { 229 const bfd_byte *addr = p; 230 unsigned long long v; 231 232 v = (unsigned long long) addr[4]; 233 v |= (unsigned long long) addr[5] << 8; 234 v |= (unsigned long long) addr[2] << 16; 235 v |= (unsigned long long) addr[3] << 24; 236 v |= (unsigned long long) addr[0] << 32; 237 v |= (unsigned long long) addr[1] << 40; 238 return v; 239 } 240 241 static bfd_vma 242 score_bfd_get_32 (bfd *abfd, const void *data) 243 { 244 if (/* score3 && */ abfd->xvec->byteorder == BFD_ENDIAN_LITTLE) 245 return score3_bfd_getl32 (data); 246 else 247 return bfd_get_32 (abfd, data); 248 } 249 250 static bfd_vma 251 score_bfd_get_48 (bfd *abfd, const void *p) 252 { 253 if (/* score3 && */ abfd->xvec->byteorder == BFD_ENDIAN_LITTLE) 254 return score3_bfd_getl48 (p); 255 else 256 return bfd_get_bits (p, 48, 1); 257 } 258 259 static void 260 score_bfd_put_16 (bfd *abfd, bfd_vma addr, void *data) 261 { 262 return bfd_put_16 (abfd, addr, data); 263 } 264 265 static void 266 score3_bfd_putl32 (bfd_vma data, void *p) 267 { 268 bfd_byte *addr = p; 269 addr[0] = (data >> 16) & 0xff; 270 addr[1] = (data >> 24) & 0xff; 271 addr[2] = data & 0xff; 272 addr[3] = (data >> 8) & 0xff; 273 } 274 275 static void 276 score3_bfd_putl48 (bfd_vma data, void *p) 277 { 278 bfd_byte *addr = p; 279 addr[0] = (data >> 32) & 0xff; 280 addr[1] = (data >> 40) & 0xff; 281 addr[2] = (data >> 16) & 0xff; 282 addr[3] = (data >> 24) & 0xff; 283 addr[4] = data & 0xff; 284 addr[5] = (data >> 8) & 0xff; 285 } 286 287 static void 288 score_bfd_put_32 (bfd *abfd, bfd_vma addr, void *data) 289 { 290 if (/* score3 && */ abfd->xvec->byteorder == BFD_ENDIAN_LITTLE) 291 return score3_bfd_putl32 (addr, data); 292 else 293 return bfd_put_32 (abfd, addr, data); 294 } 295 296 static void 297 score_bfd_put_48 (bfd *abfd, bfd_vma val, void *p) 298 { 299 if (/* score3 && */ abfd->xvec->byteorder == BFD_ENDIAN_LITTLE) 300 return score3_bfd_putl48 (val, p); 301 else 302 return bfd_put_bits (val, p, 48, 1); 303 } 304 305 static bfd_reloc_status_type 306 score_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED, 307 arelent *reloc_entry, 308 asymbol *symbol ATTRIBUTE_UNUSED, 309 void * data, 310 asection *input_section ATTRIBUTE_UNUSED, 311 bfd *output_bfd ATTRIBUTE_UNUSED, 312 char **error_message ATTRIBUTE_UNUSED) 313 { 314 hi16_rel_addr = (bfd_byte *) data + reloc_entry->address; 315 return bfd_reloc_ok; 316 } 317 318 static bfd_reloc_status_type 319 score_elf_lo16_reloc (bfd *abfd, 320 arelent *reloc_entry, 321 asymbol *symbol ATTRIBUTE_UNUSED, 322 void * data, 323 asection *input_section, 324 bfd *output_bfd ATTRIBUTE_UNUSED, 325 char **error_message ATTRIBUTE_UNUSED) 326 { 327 bfd_vma addend = 0, offset = 0; 328 unsigned long val; 329 unsigned long hi16_offset, hi16_value, uvalue; 330 331 hi16_value = score_bfd_get_32 (abfd, hi16_rel_addr); 332 hi16_offset = ((((hi16_value >> 16) & 0x3) << 15) | (hi16_value & 0x7fff)) >> 1; 333 addend = score_bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 334 offset = ((((addend >> 16) & 0x3) << 15) | (addend & 0x7fff)) >> 1; 335 val = reloc_entry->addend; 336 if (reloc_entry->address > input_section->size) 337 return bfd_reloc_outofrange; 338 uvalue = ((hi16_offset << 16) | (offset & 0xffff)) + val; 339 hi16_offset = (uvalue >> 16) << 1; 340 hi16_value = (hi16_value & ~0x37fff) | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000); 341 score_bfd_put_32 (abfd, hi16_value, hi16_rel_addr); 342 offset = (uvalue & 0xffff) << 1; 343 addend = (addend & ~0x37fff) | (offset & 0x7fff) | ((offset << 1) & 0x30000); 344 score_bfd_put_32 (abfd, addend, (bfd_byte *) data + reloc_entry->address); 345 return bfd_reloc_ok; 346 } 347 348 /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a 349 dangerous relocation. */ 350 351 static bfd_boolean 352 score_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp) 353 { 354 unsigned int count; 355 asymbol **sym; 356 unsigned int i; 357 358 /* If we've already figured out what GP will be, just return it. */ 359 *pgp = _bfd_get_gp_value (output_bfd); 360 if (*pgp) 361 return TRUE; 362 363 count = bfd_get_symcount (output_bfd); 364 sym = bfd_get_outsymbols (output_bfd); 365 366 /* The linker script will have created a symbol named `_gp' with the 367 appropriate value. */ 368 if (sym == NULL) 369 i = count; 370 else 371 { 372 for (i = 0; i < count; i++, sym++) 373 { 374 const char *name; 375 376 name = bfd_asymbol_name (*sym); 377 if (*name == '_' && strcmp (name, "_gp") == 0) 378 { 379 *pgp = bfd_asymbol_value (*sym); 380 _bfd_set_gp_value (output_bfd, *pgp); 381 break; 382 } 383 } 384 } 385 386 if (i >= count) 387 { 388 /* Only get the error once. */ 389 *pgp = 4; 390 _bfd_set_gp_value (output_bfd, *pgp); 391 return FALSE; 392 } 393 394 return TRUE; 395 } 396 397 /* We have to figure out the gp value, so that we can adjust the 398 symbol value correctly. We look up the symbol _gp in the output 399 BFD. If we can't find it, we're stuck. We cache it in the ELF 400 target data. We don't need to adjust the symbol value for an 401 external symbol if we are producing relocatable output. */ 402 static bfd_reloc_status_type 403 score_elf_final_gp (bfd *output_bfd, 404 asymbol *symbol, 405 bfd_boolean relocatable, 406 char **error_message, 407 bfd_vma *pgp) 408 { 409 if (bfd_is_und_section (symbol->section) 410 && ! relocatable) 411 { 412 *pgp = 0; 413 return bfd_reloc_undefined; 414 } 415 416 *pgp = _bfd_get_gp_value (output_bfd); 417 if (*pgp == 0 418 && (! relocatable 419 || (symbol->flags & BSF_SECTION_SYM) != 0)) 420 { 421 if (relocatable) 422 { 423 /* Make up a value. */ 424 *pgp = symbol->section->output_section->vma + 0x4000; 425 _bfd_set_gp_value (output_bfd, *pgp); 426 } 427 else if (!score_elf_assign_gp (output_bfd, pgp)) 428 { 429 *error_message = 430 (char *) _("GP relative relocation when _gp not defined"); 431 return bfd_reloc_dangerous; 432 } 433 } 434 435 return bfd_reloc_ok; 436 } 437 438 static bfd_reloc_status_type 439 score_elf_gprel15_with_gp (bfd *abfd, 440 asymbol *symbol, 441 arelent *reloc_entry, 442 asection *input_section, 443 bfd_boolean relocateable, 444 void * data, 445 bfd_vma gp ATTRIBUTE_UNUSED) 446 { 447 bfd_vma relocation; 448 unsigned long insn; 449 450 if (bfd_is_com_section (symbol->section)) 451 relocation = 0; 452 else 453 relocation = symbol->value; 454 455 relocation += symbol->section->output_section->vma; 456 relocation += symbol->section->output_offset; 457 if (reloc_entry->address > input_section->size) 458 return bfd_reloc_outofrange; 459 460 insn = score_bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 461 if (((reloc_entry->addend & 0xffffc000) != 0) 462 && ((reloc_entry->addend & 0xffffc000) != 0xffffc000)) 463 return bfd_reloc_overflow; 464 465 insn = (insn & ~0x7fff) | (reloc_entry->addend & 0x7fff); 466 score_bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); 467 if (relocateable) 468 reloc_entry->address += input_section->output_offset; 469 470 return bfd_reloc_ok; 471 } 472 473 static bfd_reloc_status_type 474 gprel32_with_gp (bfd *abfd, asymbol *symbol, arelent *reloc_entry, 475 asection *input_section, bfd_boolean relocatable, 476 void *data, bfd_vma gp) 477 { 478 bfd_vma relocation; 479 bfd_vma val; 480 481 if (bfd_is_com_section (symbol->section)) 482 relocation = 0; 483 else 484 relocation = symbol->value; 485 486 relocation += symbol->section->output_section->vma; 487 relocation += symbol->section->output_offset; 488 489 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) 490 return bfd_reloc_outofrange; 491 492 /* Set val to the offset into the section or symbol. */ 493 val = reloc_entry->addend; 494 495 if (reloc_entry->howto->partial_inplace) 496 val += score_bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 497 498 /* Adjust val for the final section location and GP value. If we 499 are producing relocatable output, we don't want to do this for 500 an external symbol. */ 501 if (! relocatable 502 || (symbol->flags & BSF_SECTION_SYM) != 0) 503 val += relocation - gp; 504 505 if (reloc_entry->howto->partial_inplace) 506 score_bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address); 507 else 508 reloc_entry->addend = val; 509 510 if (relocatable) 511 reloc_entry->address += input_section->output_offset; 512 513 return bfd_reloc_ok; 514 } 515 516 static bfd_reloc_status_type 517 score_elf_gprel15_reloc (bfd *abfd, 518 arelent *reloc_entry, 519 asymbol *symbol, 520 void * data, 521 asection *input_section, 522 bfd *output_bfd, 523 char **error_message) 524 { 525 bfd_boolean relocateable; 526 bfd_reloc_status_type ret; 527 bfd_vma gp; 528 529 if (output_bfd != NULL 530 && (symbol->flags & BSF_SECTION_SYM) == 0 && reloc_entry->addend == 0) 531 { 532 reloc_entry->address += input_section->output_offset; 533 return bfd_reloc_ok; 534 } 535 if (output_bfd != NULL) 536 relocateable = TRUE; 537 else 538 { 539 relocateable = FALSE; 540 output_bfd = symbol->section->output_section->owner; 541 } 542 543 ret = score_elf_final_gp (output_bfd, symbol, relocateable, error_message, &gp); 544 if (ret != bfd_reloc_ok) 545 return ret; 546 547 return score_elf_gprel15_with_gp (abfd, symbol, reloc_entry, 548 input_section, relocateable, data, gp); 549 } 550 551 /* Do a R_SCORE_GPREL32 relocation. This is a 32 bit value which must 552 become the offset from the gp register. */ 553 554 static bfd_reloc_status_type 555 score_elf_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 556 void *data, asection *input_section, bfd *output_bfd, 557 char **error_message) 558 { 559 bfd_boolean relocatable; 560 bfd_reloc_status_type ret; 561 bfd_vma gp; 562 563 /* R_SCORE_GPREL32 relocations are defined for local symbols only. */ 564 if (output_bfd != NULL 565 && (symbol->flags & BSF_SECTION_SYM) == 0 566 && (symbol->flags & BSF_LOCAL) != 0) 567 { 568 *error_message = (char *) 569 _("32bits gp relative relocation occurs for an external symbol"); 570 return bfd_reloc_outofrange; 571 } 572 573 if (output_bfd != NULL) 574 relocatable = TRUE; 575 else 576 { 577 relocatable = FALSE; 578 output_bfd = symbol->section->output_section->owner; 579 } 580 581 ret = score_elf_final_gp (output_bfd, symbol, relocatable, error_message, &gp); 582 if (ret != bfd_reloc_ok) 583 return ret; 584 585 gp = 0; 586 return gprel32_with_gp (abfd, symbol, reloc_entry, input_section, 587 relocatable, data, gp); 588 } 589 590 /* A howto special_function for R_SCORE_GOT15 relocations. This is just 591 like any other 16-bit relocation when applied to global symbols, but is 592 treated in the same as R_SCORE_HI16 when applied to local symbols. */ 593 static bfd_reloc_status_type 594 score_elf_got15_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 595 void *data, asection *input_section, 596 bfd *output_bfd, char **error_message) 597 { 598 if ((symbol->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 599 || bfd_is_und_section (bfd_get_section (symbol)) 600 || bfd_is_com_section (bfd_get_section (symbol))) 601 /* The relocation is against a global symbol. */ 602 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, 603 input_section, output_bfd, 604 error_message); 605 606 return score_elf_hi16_reloc (abfd, reloc_entry, symbol, data, 607 input_section, output_bfd, error_message); 608 } 609 610 static bfd_reloc_status_type 611 score_elf_got_lo16_reloc (bfd *abfd, 612 arelent *reloc_entry, 613 asymbol *symbol ATTRIBUTE_UNUSED, 614 void * data, 615 asection *input_section, 616 bfd *output_bfd ATTRIBUTE_UNUSED, 617 char **error_message ATTRIBUTE_UNUSED) 618 { 619 bfd_vma addend = 0, offset = 0; 620 signed long val; 621 signed long hi16_offset, hi16_value, uvalue; 622 623 hi16_value = score_bfd_get_32 (abfd, hi16_rel_addr); 624 hi16_offset = ((((hi16_value >> 16) & 0x3) << 15) | (hi16_value & 0x7fff)) >> 1; 625 addend = score_bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 626 offset = ((((addend >> 16) & 0x3) << 15) | (addend & 0x7fff)) >> 1; 627 val = reloc_entry->addend; 628 if (reloc_entry->address > input_section->size) 629 return bfd_reloc_outofrange; 630 uvalue = ((hi16_offset << 16) | (offset & 0xffff)) + val; 631 if ((uvalue > -0x8000) && (uvalue < 0x7fff)) 632 hi16_offset = 0; 633 else 634 hi16_offset = (uvalue >> 16) & 0x7fff; 635 hi16_value = (hi16_value & ~0x37fff) | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000); 636 score_bfd_put_32 (abfd, hi16_value, hi16_rel_addr); 637 offset = (uvalue & 0xffff) << 1; 638 addend = (addend & ~0x37fff) | (offset & 0x7fff) | ((offset << 1) & 0x30000); 639 score_bfd_put_32 (abfd, addend, (bfd_byte *) data + reloc_entry->address); 640 return bfd_reloc_ok; 641 } 642 643 static reloc_howto_type elf32_score_howto_table[] = 644 { 645 /* No relocation. */ 646 HOWTO (R_SCORE_NONE, /* type */ 647 0, /* rightshift */ 648 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 const struct elf_backend_data *bed; 2038 bfd_vma lo_value = 0; 2039 2040 bed = get_elf_backend_data (output_bfd); 2041 relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel; 2042 lo16_rel = score_elf_next_relocation (input_bfd, R_SCORE_GOT_LO16, rel, relend); 2043 if ((local_p) && (lo16_rel != NULL)) 2044 { 2045 bfd_vma tmp = 0; 2046 tmp = score_bfd_get_32 (input_bfd, contents + lo16_rel->r_offset); 2047 lo_value = (((tmp >> 16) & 0x3) << 14) | ((tmp & 0x7fff) >> 1); 2048 } 2049 addend = lo_value; 2050 } 2051 /* For score3 R_SCORE_ABS32. */ 2052 else if (r_type == R_SCORE_ABS32 || r_type == R_SCORE_REL32) 2053 { 2054 addend = (bfd_get_32 (input_bfd, hit_data) >> howto->bitpos) & howto->src_mask; 2055 } 2056 else 2057 { 2058 addend = (score_bfd_get_32 (input_bfd, hit_data) >> howto->bitpos) & howto->src_mask; 2059 } 2060 2061 /* If we haven't already determined the GOT offset, or the GP value, 2062 and we're going to need it, get it now. */ 2063 switch (r_type) 2064 { 2065 case R_SCORE_CALL15: 2066 case R_SCORE_GOT15: 2067 if (!local_p) 2068 { 2069 g = score_elf_global_got_index (elf_hash_table (info)->dynobj, 2070 (struct elf_link_hash_entry *) h); 2071 if ((! elf_hash_table (info)->dynamic_sections_created 2072 || (bfd_link_pic (info) 2073 && (info->symbolic || h->root.dynindx == -1) 2074 && h->root.def_regular))) 2075 { 2076 /* This is a static link or a -Bsymbolic link. The 2077 symbol is defined locally, or was forced to be local. 2078 We must initialize this entry in the GOT. */ 2079 bfd *tmpbfd = elf_hash_table (info)->dynobj; 2080 asection *sgot = score_elf_got_section (tmpbfd, FALSE); 2081 score_bfd_put_32 (tmpbfd, value, sgot->contents + g); 2082 } 2083 } 2084 else if (r_type == R_SCORE_GOT15 || r_type == R_SCORE_CALL15) 2085 { 2086 /* There's no need to create a local GOT entry here; the 2087 calculation for a local GOT15 entry does not involve G. */ 2088 ; 2089 } 2090 else 2091 { 2092 g = score_elf_local_got_index (output_bfd, input_bfd, info, 2093 symbol + addend, r_symndx, h, r_type); 2094 if (g == MINUS_ONE) 2095 return bfd_reloc_outofrange; 2096 } 2097 2098 /* Convert GOT indices to actual offsets. */ 2099 g = score_elf_got_offset_from_index (elf_hash_table (info)->dynobj, 2100 output_bfd, input_bfd, g); 2101 break; 2102 2103 case R_SCORE_HI16: 2104 case R_SCORE_LO16: 2105 case R_SCORE_GPREL32: 2106 gp = _bfd_get_gp_value (output_bfd); 2107 break; 2108 2109 case R_SCORE_GP15: 2110 gp = _bfd_get_gp_value (output_bfd); 2111 2112 default: 2113 break; 2114 } 2115 2116 switch (r_type) 2117 { 2118 case R_SCORE_NONE: 2119 return bfd_reloc_ok; 2120 2121 case R_SCORE_ABS32: 2122 case R_SCORE_REL32: 2123 if ((bfd_link_pic (info) 2124 || (elf_hash_table (info)->dynamic_sections_created 2125 && h != NULL 2126 && h->root.def_dynamic 2127 && !h->root.def_regular)) 2128 && r_symndx != STN_UNDEF 2129 && (input_section->flags & SEC_ALLOC) != 0) 2130 { 2131 /* If we're creating a shared library, or this relocation is against a symbol 2132 in a shared library, then we can't know where the symbol will end up. 2133 So, we create a relocation record in the output, and leave the job up 2134 to the dynamic linker. */ 2135 value = addend; 2136 if (!score_elf_create_dynamic_relocation (output_bfd, info, rel, h, 2137 symbol, &value, 2138 input_section)) 2139 return bfd_reloc_undefined; 2140 } 2141 else if (r_symndx == STN_UNDEF) 2142 /* r_symndx will be STN_UNDEF (zero) only for relocs against symbols 2143 from removed linkonce sections, or sections discarded by 2144 a linker script. */ 2145 value = 0; 2146 else 2147 { 2148 if (r_type != R_SCORE_REL32) 2149 value = symbol + addend; 2150 else 2151 value = addend; 2152 } 2153 value &= howto->dst_mask; 2154 bfd_put_32 (input_bfd, value, hit_data); 2155 return bfd_reloc_ok; 2156 2157 case R_SCORE_ABS16: 2158 value += addend; 2159 if ((long)value > 0x7fff || (long)value < -0x8000) 2160 return bfd_reloc_overflow; 2161 score_bfd_put_16 (input_bfd, value, hit_data); 2162 return bfd_reloc_ok; 2163 2164 case R_SCORE_24: 2165 addend = score_bfd_get_32 (input_bfd, hit_data); 2166 offset = (((addend & howto->src_mask) >> 1) & 0x1ff8000) | ((addend & howto->src_mask) & 0x7fff); 2167 if ((offset & 0x1000000) != 0) 2168 offset |= 0xfe000000; 2169 value += offset; 2170 abs_value = value - rel_addr; 2171 if ((abs_value & 0xfe000000) != 0) 2172 return bfd_reloc_overflow; 2173 addend = (addend & ~howto->src_mask) 2174 | (((value << 1) & howto->src_mask) & 0x3ff0000) | (value & 0x7fff); 2175 score_bfd_put_32 (input_bfd, addend, hit_data); 2176 return bfd_reloc_ok; 2177 2178 /* signed imm32. */ 2179 case R_SCORE_IMM30: 2180 { 2181 int not_word_align_p = 0; 2182 bfd_vma imm_offset = 0; 2183 addend = score_bfd_get_48 (input_bfd, hit_data); 2184 imm_offset = ((addend >> 7) & 0xff) 2185 | (((addend >> 16) & 0x7fff) << 8) 2186 | (((addend >> 32) & 0x7f) << 23); 2187 imm_offset <<= howto->rightshift; 2188 value += imm_offset; 2189 value &= 0xffffffff; 2190 2191 /* Check lw48/sw48 rd, value/label word align. */ 2192 if ((value & 0x3) != 0) 2193 not_word_align_p = 1; 2194 2195 value >>= howto->rightshift; 2196 addend = (addend & ~howto->src_mask) 2197 | (((value & 0xff) >> 0) << 7) 2198 | (((value & 0x7fff00) >> 8) << 16) 2199 | (((value & 0x3f800000) >> 23) << 32); 2200 score_bfd_put_48 (input_bfd, addend, hit_data); 2201 if (not_word_align_p) 2202 return bfd_reloc_other; 2203 else 2204 return bfd_reloc_ok; 2205 } 2206 2207 case R_SCORE_IMM32: 2208 { 2209 bfd_vma imm_offset = 0; 2210 addend = score_bfd_get_48 (input_bfd, hit_data); 2211 imm_offset = ((addend >> 5) & 0x3ff) 2212 | (((addend >> 16) & 0x7fff) << 10) 2213 | (((addend >> 32) & 0x7f) << 25); 2214 value += imm_offset; 2215 value &= 0xffffffff; 2216 addend = (addend & ~howto->src_mask) 2217 | ((value & 0x3ff) << 5) 2218 | (((value >> 10) & 0x7fff) << 16) 2219 | (((value >> 25) & 0x7f) << 32); 2220 score_bfd_put_48 (input_bfd, addend, hit_data); 2221 return bfd_reloc_ok; 2222 } 2223 2224 case R_SCORE_PC19: 2225 addend = score_bfd_get_32 (input_bfd, hit_data); 2226 offset = (((addend & howto->src_mask) & 0x3ff0000) >> 6) | ((addend & howto->src_mask) & 0x3ff); 2227 if ((offset & 0x80000) != 0) 2228 offset |= 0xfff00000; 2229 abs_value = value = value - rel_addr + offset; 2230 /* exceed 20 bit : overflow. */ 2231 if ((abs_value & 0x80000000) == 0x80000000) 2232 abs_value = 0xffffffff - value + 1; 2233 if ((abs_value & 0xfff80000) != 0) 2234 return bfd_reloc_overflow; 2235 addend = (addend & ~howto->src_mask) 2236 | (((value << 6) & howto->src_mask) & 0x3ff0000) | (value & 0x3ff); 2237 score_bfd_put_32 (input_bfd, addend, hit_data); 2238 return bfd_reloc_ok; 2239 2240 case R_SCORE16_11: 2241 addend = score_bfd_get_16 (input_bfd, hit_data); 2242 offset = addend & howto->src_mask; 2243 if ((offset & 0x800) != 0) /* Offset is negative. */ 2244 offset |= 0xfffff000; 2245 value += offset; 2246 abs_value = value - rel_addr; 2247 if ((abs_value & 0xfffff000) != 0) 2248 return bfd_reloc_overflow; 2249 addend = (addend & ~howto->src_mask) | (value & howto->src_mask); 2250 score_bfd_put_16 (input_bfd, addend, hit_data); 2251 return bfd_reloc_ok; 2252 2253 case R_SCORE16_PC8: 2254 addend = score_bfd_get_16 (input_bfd, hit_data); 2255 offset = (addend & howto->src_mask) << 1; 2256 if ((offset & 0x200) != 0) /* Offset is negative. */ 2257 offset |= 0xfffffe00; 2258 abs_value = value = value - rel_addr + offset; 2259 /* Sign bit + exceed 9 bit. */ 2260 if (((value & 0xfffffe00) != 0) && ((value & 0xfffffe00) != 0xfffffe00)) 2261 return bfd_reloc_overflow; 2262 value >>= 1; 2263 addend = (addend & ~howto->src_mask) | (value & howto->src_mask); 2264 score_bfd_put_16 (input_bfd, addend, hit_data); 2265 return bfd_reloc_ok; 2266 2267 case R_SCORE_BCMP: 2268 addend = score_bfd_get_32 (input_bfd, hit_data); 2269 offset = (addend & howto->src_mask) << howto->rightshift; 2270 if ((offset & 0x200) != 0) /* Offset is negative. */ 2271 offset |= 0xfffffe00; 2272 value = value - rel_addr + offset; 2273 /* Sign bit + exceed 9 bit. */ 2274 if (((value & 0xfffffe00) != 0) && ((value & 0xfffffe00) != 0xfffffe00)) 2275 return bfd_reloc_overflow; 2276 value >>= howto->rightshift; 2277 addend = (addend & ~howto->src_mask) 2278 | (value & 0x1) 2279 | (((value >> 1) & 0x7) << 7) 2280 | (((value >> 4) & 0x1f) << 21); 2281 score_bfd_put_32 (input_bfd, addend, hit_data); 2282 return bfd_reloc_ok; 2283 2284 case R_SCORE_HI16: 2285 return bfd_reloc_ok; 2286 2287 case R_SCORE_LO16: 2288 hi16_addend = score_bfd_get_32 (input_bfd, hit_data - 4); 2289 hi16_offset = ((((hi16_addend >> 16) & 0x3) << 15) | (hi16_addend & 0x7fff)) >> 1; 2290 addend = score_bfd_get_32 (input_bfd, hit_data); 2291 offset = ((((addend >> 16) & 0x3) << 15) | (addend & 0x7fff)) >> 1; 2292 offset = (hi16_offset << 16) | (offset & 0xffff); 2293 2294 if (!gp_disp_p) 2295 uvalue = value + offset; 2296 else 2297 uvalue = offset + gp - rel_addr + 4; 2298 2299 hi16_offset = (uvalue >> 16) << 1; 2300 hi16_value = (hi16_addend & (~(howto->dst_mask))) 2301 | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000); 2302 score_bfd_put_32 (input_bfd, hi16_value, hit_data - 4); 2303 offset = (uvalue & 0xffff) << 1; 2304 value = (addend & (~(howto->dst_mask))) | (offset & 0x7fff) | ((offset << 1) & 0x30000); 2305 score_bfd_put_32 (input_bfd, value, hit_data); 2306 return bfd_reloc_ok; 2307 2308 case R_SCORE_GP15: 2309 addend = score_bfd_get_32 (input_bfd, hit_data); 2310 offset = addend & 0x7fff; 2311 if ((offset & 0x4000) == 0x4000) 2312 offset |= 0xffffc000; 2313 value = value + offset - gp; 2314 if (((value & 0xffffc000) != 0) && ((value & 0xffffc000) != 0xffffc000)) 2315 return bfd_reloc_overflow; 2316 value = (addend & ~howto->src_mask) | (value & howto->src_mask); 2317 score_bfd_put_32 (input_bfd, value, hit_data); 2318 return bfd_reloc_ok; 2319 2320 case R_SCORE_GOT15: 2321 case R_SCORE_CALL15: 2322 if (local_p) 2323 { 2324 bfd_boolean forced; 2325 2326 /* The special case is when the symbol is forced to be local. We need the 2327 full address in the GOT since no R_SCORE_GOT_LO16 relocation follows. */ 2328 forced = ! score_elf_local_relocation_p (input_bfd, rel, 2329 local_sections, FALSE); 2330 value = score_elf_got16_entry (output_bfd, input_bfd, info, 2331 symbol + addend, forced); 2332 if (value == MINUS_ONE) 2333 return bfd_reloc_outofrange; 2334 value = score_elf_got_offset_from_index (elf_hash_table (info)->dynobj, 2335 output_bfd, input_bfd, value); 2336 } 2337 else 2338 { 2339 value = g; 2340 } 2341 2342 if ((long) value > 0x3fff || (long) value < -0x4000) 2343 return bfd_reloc_overflow; 2344 2345 addend = score_bfd_get_32 (input_bfd, hit_data); 2346 value = (addend & ~howto->dst_mask) | (value & howto->dst_mask); 2347 score_bfd_put_32 (input_bfd, value, hit_data); 2348 return bfd_reloc_ok; 2349 2350 case R_SCORE_GPREL32: 2351 value = (addend + symbol - gp); 2352 value &= howto->dst_mask; 2353 score_bfd_put_32 (input_bfd, value, hit_data); 2354 return bfd_reloc_ok; 2355 2356 case R_SCORE_GOT_LO16: 2357 addend = score_bfd_get_32 (input_bfd, hit_data); 2358 value = (((addend >> 16) & 0x3) << 14) | ((addend & 0x7fff) >> 1); 2359 value += symbol; 2360 value = (addend & (~(howto->dst_mask))) | ((value & 0x3fff) << 1) 2361 | (((value >> 14) & 0x3) << 16); 2362 2363 score_bfd_put_32 (input_bfd, value, hit_data); 2364 return bfd_reloc_ok; 2365 2366 case R_SCORE_DUMMY_HI16: 2367 return bfd_reloc_ok; 2368 2369 case R_SCORE_GNU_VTINHERIT: 2370 case R_SCORE_GNU_VTENTRY: 2371 /* We don't do anything with these at present. */ 2372 return bfd_reloc_continue; 2373 2374 default: 2375 return bfd_reloc_notsupported; 2376 } 2377 } 2378 2379 /* Score backend functions. */ 2380 static void 2381 s3_bfd_score_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, 2382 arelent *bfd_reloc, 2383 Elf_Internal_Rela *elf_reloc) 2384 { 2385 unsigned int r_type; 2386 2387 r_type = ELF32_R_TYPE (elf_reloc->r_info); 2388 if (r_type >= ARRAY_SIZE (elf32_score_howto_table)) 2389 bfd_reloc->howto = NULL; 2390 else 2391 bfd_reloc->howto = &elf32_score_howto_table[r_type]; 2392 } 2393 2394 /* Relocate an score ELF section. */ 2395 static bfd_boolean 2396 s3_bfd_score_elf_relocate_section (bfd *output_bfd, 2397 struct bfd_link_info *info, 2398 bfd *input_bfd, 2399 asection *input_section, 2400 bfd_byte *contents, 2401 Elf_Internal_Rela *relocs, 2402 Elf_Internal_Sym *local_syms, 2403 asection **local_sections) 2404 { 2405 Elf_Internal_Shdr *symtab_hdr; 2406 Elf_Internal_Rela *rel; 2407 Elf_Internal_Rela *relend; 2408 const char *name; 2409 unsigned long offset; 2410 unsigned long hi16_addend, hi16_offset, hi16_value, uvalue; 2411 size_t extsymoff; 2412 bfd_boolean gp_disp_p = FALSE; 2413 2414 /* Sort dynsym. */ 2415 if (elf_hash_table (info)->dynamic_sections_created) 2416 { 2417 bfd_size_type dynsecsymcount = 0; 2418 if (bfd_link_pic (info)) 2419 { 2420 asection * p; 2421 const struct elf_backend_data *bed = get_elf_backend_data (output_bfd); 2422 2423 for (p = output_bfd->sections; p ; p = p->next) 2424 if ((p->flags & SEC_EXCLUDE) == 0 2425 && (p->flags & SEC_ALLOC) != 0 2426 && !(*bed->elf_backend_omit_section_dynsym) (output_bfd, info, p)) 2427 ++ dynsecsymcount; 2428 } 2429 2430 if (!score_elf_sort_hash_table (info, dynsecsymcount + 1)) 2431 return FALSE; 2432 } 2433 2434 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 2435 extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info; 2436 rel = relocs; 2437 relend = relocs + input_section->reloc_count; 2438 for (; rel < relend; rel++) 2439 { 2440 int r_type; 2441 reloc_howto_type *howto; 2442 unsigned long r_symndx; 2443 Elf_Internal_Sym *sym; 2444 asection *sec; 2445 struct score_elf_link_hash_entry *h; 2446 bfd_vma relocation = 0; 2447 bfd_reloc_status_type r; 2448 arelent bfd_reloc; 2449 2450 r_symndx = ELF32_R_SYM (rel->r_info); 2451 r_type = ELF32_R_TYPE (rel->r_info); 2452 2453 s3_bfd_score_info_to_howto (input_bfd, &bfd_reloc, (Elf_Internal_Rela *) rel); 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 align"); 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 const struct elf_backend_data *bed; 2782 2783 if (bfd_link_relocatable (info)) 2784 return TRUE; 2785 2786 dynobj = elf_hash_table (info)->dynobj; 2787 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 2788 sym_hashes = elf_sym_hashes (abfd); 2789 extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; 2790 2791 if (dynobj == NULL) 2792 { 2793 sgot = NULL; 2794 g = NULL; 2795 } 2796 else 2797 { 2798 sgot = score_elf_got_section (dynobj, FALSE); 2799 if (sgot == NULL) 2800 g = NULL; 2801 else 2802 { 2803 BFD_ASSERT (score_elf_section_data (sgot) != NULL); 2804 g = score_elf_section_data (sgot)->u.got_info; 2805 BFD_ASSERT (g != NULL); 2806 } 2807 } 2808 2809 sreloc = NULL; 2810 bed = get_elf_backend_data (abfd); 2811 rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel; 2812 for (rel = relocs; rel < rel_end; ++rel) 2813 { 2814 unsigned long r_symndx; 2815 unsigned int r_type; 2816 struct elf_link_hash_entry *h; 2817 2818 r_symndx = ELF32_R_SYM (rel->r_info); 2819 r_type = ELF32_R_TYPE (rel->r_info); 2820 2821 if (r_symndx < extsymoff) 2822 { 2823 h = NULL; 2824 } 2825 else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr)) 2826 { 2827 _bfd_error_handler 2828 /* xgettext:c-format */ 2829 (_("%B: Malformed reloc detected for section %A"), abfd, sec); 2830 bfd_set_error (bfd_error_bad_value); 2831 return FALSE; 2832 } 2833 else 2834 { 2835 h = sym_hashes[r_symndx - extsymoff]; 2836 2837 /* This may be an indirect symbol created because of a version. */ 2838 if (h != NULL) 2839 { 2840 while (h->root.type == bfd_link_hash_indirect) 2841 h = (struct elf_link_hash_entry *)h->root.u.i.link; 2842 2843 /* PR15323, ref flags aren't set for references in the 2844 same object. */ 2845 h->root.non_ir_ref = 1; 2846 } 2847 } 2848 2849 /* Some relocs require a global offset table. */ 2850 if (dynobj == NULL || sgot == NULL) 2851 { 2852 switch (r_type) 2853 { 2854 case R_SCORE_GOT15: 2855 case R_SCORE_CALL15: 2856 if (dynobj == NULL) 2857 elf_hash_table (info)->dynobj = dynobj = abfd; 2858 if (!score_elf_create_got_section (dynobj, info, FALSE)) 2859 return FALSE; 2860 g = score_elf_got_info (dynobj, &sgot); 2861 break; 2862 case R_SCORE_ABS32: 2863 case R_SCORE_REL32: 2864 if (dynobj == NULL 2865 && (bfd_link_pic (info) || h != NULL) 2866 && (sec->flags & SEC_ALLOC) != 0) 2867 elf_hash_table (info)->dynobj = dynobj = abfd; 2868 break; 2869 default: 2870 break; 2871 } 2872 } 2873 2874 if (!h && (r_type == R_SCORE_GOT_LO16)) 2875 { 2876 if (! score_elf_record_local_got_symbol (abfd, r_symndx, rel->r_addend, g)) 2877 return FALSE; 2878 } 2879 2880 switch (r_type) 2881 { 2882 case R_SCORE_CALL15: 2883 if (h == NULL) 2884 { 2885 _bfd_error_handler 2886 /* xgettext:c-format */ 2887 (_("%B: CALL15 reloc at 0x%lx not against global symbol"), 2888 abfd, (unsigned long) rel->r_offset); 2889 bfd_set_error (bfd_error_bad_value); 2890 return FALSE; 2891 } 2892 else 2893 { 2894 /* This symbol requires a global offset table entry. */ 2895 if (! score_elf_record_global_got_symbol (h, abfd, info, g)) 2896 return FALSE; 2897 2898 /* We need a stub, not a plt entry for the undefined function. But we record 2899 it as if it needs plt. See _bfd_elf_adjust_dynamic_symbol. */ 2900 h->needs_plt = 1; 2901 h->type = STT_FUNC; 2902 } 2903 break; 2904 case R_SCORE_GOT15: 2905 if (h && ! score_elf_record_global_got_symbol (h, abfd, info, g)) 2906 return FALSE; 2907 break; 2908 case R_SCORE_ABS32: 2909 case R_SCORE_REL32: 2910 if ((bfd_link_pic (info) || h != NULL) 2911 && (sec->flags & SEC_ALLOC) != 0) 2912 { 2913 if (sreloc == NULL) 2914 { 2915 sreloc = score_elf_rel_dyn_section (dynobj, TRUE); 2916 if (sreloc == NULL) 2917 return FALSE; 2918 } 2919 #define SCORE_READONLY_SECTION (SEC_ALLOC | SEC_LOAD | SEC_READONLY) 2920 if (bfd_link_pic (info)) 2921 { 2922 /* When creating a shared object, we must copy these reloc types into 2923 the output file as R_SCORE_REL32 relocs. We make room for this reloc 2924 in the .rel.dyn reloc section. */ 2925 score_elf_allocate_dynamic_relocations (dynobj, 1); 2926 if ((sec->flags & SCORE_READONLY_SECTION) 2927 == SCORE_READONLY_SECTION) 2928 /* We tell the dynamic linker that there are 2929 relocations against the text segment. */ 2930 info->flags |= DF_TEXTREL; 2931 } 2932 else 2933 { 2934 struct score_elf_link_hash_entry *hscore; 2935 2936 /* We only need to copy this reloc if the symbol is 2937 defined in a dynamic object. */ 2938 hscore = (struct score_elf_link_hash_entry *)h; 2939 ++hscore->possibly_dynamic_relocs; 2940 if ((sec->flags & SCORE_READONLY_SECTION) 2941 == SCORE_READONLY_SECTION) 2942 /* We need it to tell the dynamic linker if there 2943 are relocations against the text segment. */ 2944 hscore->readonly_reloc = TRUE; 2945 } 2946 2947 /* Even though we don't directly need a GOT entry for this symbol, 2948 a symbol must have a dynamic symbol table index greater that 2949 DT_SCORE_GOTSYM if there are dynamic relocations against it. */ 2950 if (h != NULL) 2951 { 2952 if (dynobj == NULL) 2953 elf_hash_table (info)->dynobj = dynobj = abfd; 2954 if (! score_elf_create_got_section (dynobj, info, TRUE)) 2955 return FALSE; 2956 g = score_elf_got_info (dynobj, &sgot); 2957 if (! score_elf_record_global_got_symbol (h, abfd, info, g)) 2958 return FALSE; 2959 } 2960 } 2961 break; 2962 2963 /* This relocation describes the C++ object vtable hierarchy. 2964 Reconstruct it for later use during GC. */ 2965 case R_SCORE_GNU_VTINHERIT: 2966 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 2967 return FALSE; 2968 break; 2969 2970 /* This relocation describes which C++ vtable entries are actually 2971 used. Record for later use during GC. */ 2972 case R_SCORE_GNU_VTENTRY: 2973 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) 2974 return FALSE; 2975 break; 2976 default: 2977 break; 2978 } 2979 2980 /* We must not create a stub for a symbol that has relocations 2981 related to taking the function's address. */ 2982 switch (r_type) 2983 { 2984 default: 2985 if (h != NULL) 2986 { 2987 struct score_elf_link_hash_entry *sh; 2988 2989 sh = (struct score_elf_link_hash_entry *) h; 2990 sh->no_fn_stub = TRUE; 2991 } 2992 break; 2993 case R_SCORE_CALL15: 2994 break; 2995 } 2996 } 2997 2998 return TRUE; 2999 } 3000 3001 static bfd_boolean 3002 s3_bfd_score_elf_add_symbol_hook (bfd *abfd, 3003 struct bfd_link_info *info ATTRIBUTE_UNUSED, 3004 Elf_Internal_Sym *sym, 3005 const char **namep ATTRIBUTE_UNUSED, 3006 flagword *flagsp ATTRIBUTE_UNUSED, 3007 asection **secp, 3008 bfd_vma *valp) 3009 { 3010 switch (sym->st_shndx) 3011 { 3012 case SHN_COMMON: 3013 if (sym->st_size > elf_gp_size (abfd)) 3014 break; 3015 /* Fall through. */ 3016 case SHN_SCORE_SCOMMON: 3017 *secp = bfd_make_section_old_way (abfd, ".scommon"); 3018 (*secp)->flags |= SEC_IS_COMMON; 3019 *valp = sym->st_size; 3020 break; 3021 } 3022 3023 return TRUE; 3024 } 3025 3026 static void 3027 s3_bfd_score_elf_symbol_processing (bfd *abfd, asymbol *asym) 3028 { 3029 elf_symbol_type *elfsym; 3030 3031 elfsym = (elf_symbol_type *) asym; 3032 switch (elfsym->internal_elf_sym.st_shndx) 3033 { 3034 case SHN_COMMON: 3035 if (asym->value > elf_gp_size (abfd)) 3036 break; 3037 /* Fall through. */ 3038 case SHN_SCORE_SCOMMON: 3039 if (score_elf_scom_section.name == NULL) 3040 { 3041 /* Initialize the small common section. */ 3042 score_elf_scom_section.name = ".scommon"; 3043 score_elf_scom_section.flags = SEC_IS_COMMON; 3044 score_elf_scom_section.output_section = &score_elf_scom_section; 3045 score_elf_scom_section.symbol = &score_elf_scom_symbol; 3046 score_elf_scom_section.symbol_ptr_ptr = &score_elf_scom_symbol_ptr; 3047 score_elf_scom_symbol.name = ".scommon"; 3048 score_elf_scom_symbol.flags = BSF_SECTION_SYM; 3049 score_elf_scom_symbol.section = &score_elf_scom_section; 3050 score_elf_scom_symbol_ptr = &score_elf_scom_symbol; 3051 } 3052 asym->section = &score_elf_scom_section; 3053 asym->value = elfsym->internal_elf_sym.st_size; 3054 break; 3055 } 3056 } 3057 3058 static int 3059 s3_bfd_score_elf_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED, 3060 const char *name ATTRIBUTE_UNUSED, 3061 Elf_Internal_Sym *sym, 3062 asection *input_sec, 3063 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) 3064 { 3065 /* If we see a common symbol, which implies a relocatable link, then 3066 if a symbol was small common in an input file, mark it as small 3067 common in the output file. */ 3068 if (sym->st_shndx == SHN_COMMON && strcmp (input_sec->name, ".scommon") == 0) 3069 sym->st_shndx = SHN_SCORE_SCOMMON; 3070 3071 return 1; 3072 } 3073 3074 static bfd_boolean 3075 s3_bfd_score_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, 3076 asection *sec, 3077 int *retval) 3078 { 3079 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) 3080 { 3081 *retval = SHN_SCORE_SCOMMON; 3082 return TRUE; 3083 } 3084 3085 return FALSE; 3086 } 3087 3088 /* Adjust a symbol defined by a dynamic object and referenced by a 3089 regular object. The current definition is in some section of the 3090 dynamic object, but we're not including those sections. We have to 3091 change the definition to something the rest of the link can understand. */ 3092 static bfd_boolean 3093 s3_bfd_score_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 3094 struct elf_link_hash_entry *h) 3095 { 3096 bfd *dynobj; 3097 struct score_elf_link_hash_entry *hscore; 3098 asection *s; 3099 3100 dynobj = elf_hash_table (info)->dynobj; 3101 3102 /* Make sure we know what is going on here. */ 3103 BFD_ASSERT (dynobj != NULL 3104 && (h->needs_plt 3105 || h->u.weakdef != NULL 3106 || (h->def_dynamic && h->ref_regular && !h->def_regular))); 3107 3108 /* If this symbol is defined in a dynamic object, we need to copy 3109 any R_SCORE_ABS32 or R_SCORE_REL32 relocs against it into the output 3110 file. */ 3111 hscore = (struct score_elf_link_hash_entry *)h; 3112 if (!bfd_link_relocatable (info) 3113 && hscore->possibly_dynamic_relocs != 0 3114 && (h->root.type == bfd_link_hash_defweak || !h->def_regular)) 3115 { 3116 score_elf_allocate_dynamic_relocations (dynobj, hscore->possibly_dynamic_relocs); 3117 if (hscore->readonly_reloc) 3118 /* We tell the dynamic linker that there are relocations 3119 against the text segment. */ 3120 info->flags |= DF_TEXTREL; 3121 } 3122 3123 /* For a function, create a stub, if allowed. */ 3124 if (!hscore->no_fn_stub && h->needs_plt) 3125 { 3126 if (!elf_hash_table (info)->dynamic_sections_created) 3127 return TRUE; 3128 3129 /* If this symbol is not defined in a regular file, then set 3130 the symbol to the stub location. This is required to make 3131 function pointers compare as equal between the normal 3132 executable and the shared library. */ 3133 if (!h->def_regular) 3134 { 3135 /* We need .stub section. */ 3136 s = bfd_get_linker_section (dynobj, SCORE_ELF_STUB_SECTION_NAME); 3137 BFD_ASSERT (s != NULL); 3138 3139 h->root.u.def.section = s; 3140 h->root.u.def.value = s->size; 3141 3142 /* XXX Write this stub address somewhere. */ 3143 h->plt.offset = s->size; 3144 3145 /* Make room for this stub code. */ 3146 s->size += SCORE_FUNCTION_STUB_SIZE; 3147 3148 /* The last half word of the stub will be filled with the index 3149 of this symbol in .dynsym section. */ 3150 return TRUE; 3151 } 3152 } 3153 else if ((h->type == STT_FUNC) && !h->needs_plt) 3154 { 3155 /* This will set the entry for this symbol in the GOT to 0, and 3156 the dynamic linker will take care of this. */ 3157 h->root.u.def.value = 0; 3158 return TRUE; 3159 } 3160 3161 /* If this is a weak symbol, and there is a real definition, the 3162 processor independent code will have arranged for us to see the 3163 real definition first, and we can just use the same value. */ 3164 if (h->u.weakdef != NULL) 3165 { 3166 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 3167 || h->u.weakdef->root.type == bfd_link_hash_defweak); 3168 h->root.u.def.section = h->u.weakdef->root.u.def.section; 3169 h->root.u.def.value = h->u.weakdef->root.u.def.value; 3170 return TRUE; 3171 } 3172 3173 /* This is a reference to a symbol defined by a dynamic object which 3174 is not a function. */ 3175 return TRUE; 3176 } 3177 3178 /* This function is called after all the input files have been read, 3179 and the input sections have been assigned to output sections. */ 3180 static bfd_boolean 3181 s3_bfd_score_elf_always_size_sections (bfd *output_bfd, 3182 struct bfd_link_info *info) 3183 { 3184 bfd *dynobj; 3185 asection *s; 3186 struct score_got_info *g; 3187 int i; 3188 bfd_size_type loadable_size = 0; 3189 bfd_size_type local_gotno; 3190 bfd *sub; 3191 3192 dynobj = elf_hash_table (info)->dynobj; 3193 if (dynobj == NULL) 3194 /* Relocatable links don't have it. */ 3195 return TRUE; 3196 3197 g = score_elf_got_info (dynobj, &s); 3198 if (s == NULL) 3199 return TRUE; 3200 3201 /* Calculate the total loadable size of the output. That will give us the 3202 maximum number of GOT_PAGE entries required. */ 3203 for (sub = info->input_bfds; sub; sub = sub->link.next) 3204 { 3205 asection *subsection; 3206 3207 for (subsection = sub->sections; 3208 subsection; 3209 subsection = subsection->next) 3210 { 3211 if ((subsection->flags & SEC_ALLOC) == 0) 3212 continue; 3213 loadable_size += ((subsection->size + 0xf) 3214 &~ (bfd_size_type) 0xf); 3215 } 3216 } 3217 3218 /* There has to be a global GOT entry for every symbol with 3219 a dynamic symbol table index of DT_SCORE_GOTSYM or 3220 higher. Therefore, it make sense to put those symbols 3221 that need GOT entries at the end of the symbol table. We 3222 do that here. */ 3223 if (! score_elf_sort_hash_table (info, 1)) 3224 return FALSE; 3225 3226 if (g->global_gotsym != NULL) 3227 i = elf_hash_table (info)->dynsymcount - g->global_gotsym->dynindx; 3228 else 3229 /* If there are no global symbols, or none requiring 3230 relocations, then GLOBAL_GOTSYM will be NULL. */ 3231 i = 0; 3232 3233 /* In the worst case, we'll get one stub per dynamic symbol. */ 3234 loadable_size += SCORE_FUNCTION_STUB_SIZE * i; 3235 3236 /* Assume there are two loadable segments consisting of 3237 contiguous sections. Is 5 enough? */ 3238 local_gotno = (loadable_size >> 16) + 5; 3239 3240 g->local_gotno += local_gotno; 3241 s->size += g->local_gotno * SCORE_ELF_GOT_SIZE (output_bfd); 3242 3243 g->global_gotno = i; 3244 s->size += i * SCORE_ELF_GOT_SIZE (output_bfd); 3245 3246 score_elf_resolve_final_got_entries (g); 3247 3248 if (s->size > SCORE_ELF_GOT_MAX_SIZE (output_bfd)) 3249 { 3250 /* Fixme. Error message or Warning message should be issued here. */ 3251 } 3252 3253 return TRUE; 3254 } 3255 3256 /* Set the sizes of the dynamic sections. */ 3257 static bfd_boolean 3258 s3_bfd_score_elf_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) 3259 { 3260 bfd *dynobj; 3261 asection *s; 3262 bfd_boolean reltext; 3263 3264 dynobj = elf_hash_table (info)->dynobj; 3265 BFD_ASSERT (dynobj != NULL); 3266 3267 if (elf_hash_table (info)->dynamic_sections_created) 3268 { 3269 /* Set the contents of the .interp section to the interpreter. */ 3270 if (!bfd_link_pic (info) && !info->nointerp) 3271 { 3272 s = bfd_get_linker_section (dynobj, ".interp"); 3273 BFD_ASSERT (s != NULL); 3274 s->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1; 3275 s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; 3276 } 3277 } 3278 3279 /* The check_relocs and adjust_dynamic_symbol entry points have 3280 determined the sizes of the various dynamic sections. Allocate 3281 memory for them. */ 3282 reltext = FALSE; 3283 for (s = dynobj->sections; s != NULL; s = s->next) 3284 { 3285 const char *name; 3286 3287 if ((s->flags & SEC_LINKER_CREATED) == 0) 3288 continue; 3289 3290 /* It's OK to base decisions on the section name, because none 3291 of the dynobj section names depend upon the input files. */ 3292 name = bfd_get_section_name (dynobj, s); 3293 3294 if (CONST_STRNEQ (name, ".rel")) 3295 { 3296 if (s->size == 0) 3297 { 3298 /* We only strip the section if the output section name 3299 has the same name. Otherwise, there might be several 3300 input sections for this output section. FIXME: This 3301 code is probably not needed these days anyhow, since 3302 the linker now does not create empty output sections. */ 3303 if (s->output_section != NULL 3304 && strcmp (name, 3305 bfd_get_section_name (s->output_section->owner, 3306 s->output_section)) == 0) 3307 s->flags |= SEC_EXCLUDE; 3308 } 3309 else 3310 { 3311 const char *outname; 3312 asection *target; 3313 3314 /* If this relocation section applies to a read only 3315 section, then we probably need a DT_TEXTREL entry. 3316 If the relocation section is .rel.dyn, we always 3317 assert a DT_TEXTREL entry rather than testing whether 3318 there exists a relocation to a read only section or 3319 not. */ 3320 outname = bfd_get_section_name (output_bfd, s->output_section); 3321 target = bfd_get_section_by_name (output_bfd, outname + 4); 3322 if ((target != NULL 3323 && (target->flags & SEC_READONLY) != 0 3324 && (target->flags & SEC_ALLOC) != 0) || strcmp (outname, ".rel.dyn") == 0) 3325 reltext = TRUE; 3326 3327 /* We use the reloc_count field as a counter if we need 3328 to copy relocs into the output file. */ 3329 if (strcmp (name, ".rel.dyn") != 0) 3330 s->reloc_count = 0; 3331 } 3332 } 3333 else if (CONST_STRNEQ (name, ".got")) 3334 { 3335 /* s3_bfd_score_elf_always_size_sections() has already done 3336 most of the work, but some symbols may have been mapped 3337 to versions that we must now resolve in the got_entries 3338 hash tables. */ 3339 } 3340 else if (strcmp (name, SCORE_ELF_STUB_SECTION_NAME) == 0) 3341 { 3342 /* IRIX rld assumes that the function stub isn't at the end 3343 of .text section. So put a dummy. XXX */ 3344 s->size += SCORE_FUNCTION_STUB_SIZE; 3345 } 3346 else if (! CONST_STRNEQ (name, ".init")) 3347 { 3348 /* It's not one of our sections, so don't allocate space. */ 3349 continue; 3350 } 3351 3352 /* Allocate memory for the section contents. */ 3353 s->contents = bfd_zalloc (dynobj, s->size); 3354 if (s->contents == NULL && s->size != 0) 3355 { 3356 bfd_set_error (bfd_error_no_memory); 3357 return FALSE; 3358 } 3359 } 3360 3361 if (elf_hash_table (info)->dynamic_sections_created) 3362 { 3363 /* Add some entries to the .dynamic section. We fill in the 3364 values later, in s3_bfd_score_elf_finish_dynamic_sections, but we 3365 must add the entries now so that we get the correct size for 3366 the .dynamic section. The DT_DEBUG entry is filled in by the 3367 dynamic linker and used by the debugger. */ 3368 3369 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0)) 3370 return FALSE; 3371 3372 if (reltext) 3373 info->flags |= DF_TEXTREL; 3374 3375 if ((info->flags & DF_TEXTREL) != 0) 3376 { 3377 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0)) 3378 return FALSE; 3379 } 3380 3381 if (! SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0)) 3382 return FALSE; 3383 3384 if (score_elf_rel_dyn_section (dynobj, FALSE)) 3385 { 3386 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0)) 3387 return FALSE; 3388 3389 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0)) 3390 return FALSE; 3391 3392 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0)) 3393 return FALSE; 3394 } 3395 3396 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_BASE_ADDRESS, 0)) 3397 return FALSE; 3398 3399 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_LOCAL_GOTNO, 0)) 3400 return FALSE; 3401 3402 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_SYMTABNO, 0)) 3403 return FALSE; 3404 3405 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_UNREFEXTNO, 0)) 3406 return FALSE; 3407 3408 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_GOTSYM, 0)) 3409 return FALSE; 3410 3411 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_HIPAGENO, 0)) 3412 return FALSE; 3413 } 3414 3415 return TRUE; 3416 } 3417 3418 static bfd_boolean 3419 s3_bfd_score_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 3420 { 3421 struct elf_link_hash_entry *h; 3422 struct bfd_link_hash_entry *bh; 3423 flagword flags; 3424 asection *s; 3425 3426 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 3427 | SEC_LINKER_CREATED | SEC_READONLY); 3428 3429 /* ABI requests the .dynamic section to be read only. */ 3430 s = bfd_get_linker_section (abfd, ".dynamic"); 3431 if (s != NULL) 3432 { 3433 if (!bfd_set_section_flags (abfd, s, flags)) 3434 return FALSE; 3435 } 3436 3437 /* We need to create .got section. */ 3438 if (!score_elf_create_got_section (abfd, info, FALSE)) 3439 return FALSE; 3440 3441 if (!score_elf_rel_dyn_section (elf_hash_table (info)->dynobj, TRUE)) 3442 return FALSE; 3443 3444 /* Create .stub section. */ 3445 if (bfd_get_linker_section (abfd, SCORE_ELF_STUB_SECTION_NAME) == NULL) 3446 { 3447 s = bfd_make_section_anyway_with_flags (abfd, SCORE_ELF_STUB_SECTION_NAME, 3448 flags | SEC_CODE); 3449 if (s == NULL 3450 || !bfd_set_section_alignment (abfd, s, 2)) 3451 3452 return FALSE; 3453 } 3454 3455 if (!bfd_link_pic (info)) 3456 { 3457 const char *name; 3458 3459 name = "_DYNAMIC_LINK"; 3460 bh = NULL; 3461 if (!(_bfd_generic_link_add_one_symbol 3462 (info, abfd, name, BSF_GLOBAL, bfd_abs_section_ptr, 3463 (bfd_vma) 0, NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) 3464 return FALSE; 3465 3466 h = (struct elf_link_hash_entry *)bh; 3467 h->non_elf = 0; 3468 h->def_regular = 1; 3469 h->type = STT_SECTION; 3470 3471 if (!bfd_elf_link_record_dynamic_symbol (info, h)) 3472 return FALSE; 3473 } 3474 3475 return TRUE; 3476 } 3477 3478 3479 /* Finish up dynamic symbol handling. We set the contents of various 3480 dynamic sections here. */ 3481 static bfd_boolean 3482 s3_bfd_score_elf_finish_dynamic_symbol (bfd *output_bfd, 3483 struct bfd_link_info *info, 3484 struct elf_link_hash_entry *h, 3485 Elf_Internal_Sym *sym) 3486 { 3487 bfd *dynobj; 3488 asection *sgot; 3489 struct score_got_info *g; 3490 const char *name; 3491 3492 dynobj = elf_hash_table (info)->dynobj; 3493 3494 if (h->plt.offset != MINUS_ONE) 3495 { 3496 asection *s; 3497 bfd_byte stub[SCORE_FUNCTION_STUB_SIZE]; 3498 3499 /* This symbol has a stub. Set it up. */ 3500 BFD_ASSERT (h->dynindx != -1); 3501 3502 s = bfd_get_linker_section (dynobj, SCORE_ELF_STUB_SECTION_NAME); 3503 BFD_ASSERT (s != NULL); 3504 3505 /* FIXME: Can h->dynindex be more than 64K? */ 3506 if (h->dynindx & 0xffff0000) 3507 return FALSE; 3508 3509 /* Fill the stub. */ 3510 score_bfd_put_32 (output_bfd, STUB_LW, stub); 3511 score_bfd_put_32 (output_bfd, STUB_MOVE, stub + 4); 3512 score_bfd_put_32 (output_bfd, STUB_LI16 | (h->dynindx << 1), stub + 8); 3513 score_bfd_put_32 (output_bfd, STUB_BRL, stub + 12); 3514 3515 BFD_ASSERT (h->plt.offset <= s->size); 3516 memcpy (s->contents + h->plt.offset, stub, SCORE_FUNCTION_STUB_SIZE); 3517 3518 /* Mark the symbol as undefined. plt.offset != -1 occurs 3519 only for the referenced symbol. */ 3520 sym->st_shndx = SHN_UNDEF; 3521 3522 /* The run-time linker uses the st_value field of the symbol 3523 to reset the global offset table entry for this external 3524 to its stub address when unlinking a shared object. */ 3525 sym->st_value = (s->output_section->vma + s->output_offset + h->plt.offset); 3526 } 3527 3528 BFD_ASSERT (h->dynindx != -1 || h->forced_local); 3529 3530 sgot = score_elf_got_section (dynobj, FALSE); 3531 BFD_ASSERT (sgot != NULL); 3532 BFD_ASSERT (score_elf_section_data (sgot) != NULL); 3533 g = score_elf_section_data (sgot)->u.got_info; 3534 BFD_ASSERT (g != NULL); 3535 3536 /* Run through the global symbol table, creating GOT entries for all 3537 the symbols that need them. */ 3538 if (g->global_gotsym != NULL && h->dynindx >= g->global_gotsym->dynindx) 3539 { 3540 bfd_vma offset; 3541 bfd_vma value; 3542 3543 value = sym->st_value; 3544 offset = score_elf_global_got_index (dynobj, h); 3545 score_bfd_put_32 (output_bfd, value, sgot->contents + offset); 3546 } 3547 3548 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ 3549 name = h->root.root.string; 3550 if (h == elf_hash_table (info)->hdynamic 3551 || h == elf_hash_table (info)->hgot) 3552 sym->st_shndx = SHN_ABS; 3553 else if (strcmp (name, "_DYNAMIC_LINK") == 0) 3554 { 3555 sym->st_shndx = SHN_ABS; 3556 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); 3557 sym->st_value = 1; 3558 } 3559 else if (strcmp (name, GP_DISP_LABEL) == 0) 3560 { 3561 sym->st_shndx = SHN_ABS; 3562 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); 3563 sym->st_value = elf_gp (output_bfd); 3564 } 3565 3566 return TRUE; 3567 } 3568 3569 /* Finish up the dynamic sections. */ 3570 static bfd_boolean 3571 s3_bfd_score_elf_finish_dynamic_sections (bfd *output_bfd, 3572 struct bfd_link_info *info) 3573 { 3574 bfd *dynobj; 3575 asection *sdyn; 3576 asection *sgot; 3577 asection *s; 3578 struct score_got_info *g; 3579 3580 dynobj = elf_hash_table (info)->dynobj; 3581 3582 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 3583 3584 sgot = score_elf_got_section (dynobj, FALSE); 3585 if (sgot == NULL) 3586 g = NULL; 3587 else 3588 { 3589 BFD_ASSERT (score_elf_section_data (sgot) != NULL); 3590 g = score_elf_section_data (sgot)->u.got_info; 3591 BFD_ASSERT (g != NULL); 3592 } 3593 3594 if (elf_hash_table (info)->dynamic_sections_created) 3595 { 3596 bfd_byte *b; 3597 3598 BFD_ASSERT (sdyn != NULL); 3599 BFD_ASSERT (g != NULL); 3600 3601 for (b = sdyn->contents; 3602 b < sdyn->contents + sdyn->size; 3603 b += SCORE_ELF_DYN_SIZE (dynobj)) 3604 { 3605 Elf_Internal_Dyn dyn; 3606 const char *name; 3607 size_t elemsize; 3608 bfd_boolean swap_out_p; 3609 3610 /* Read in the current dynamic entry. */ 3611 (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); 3612 3613 /* Assume that we're going to modify it and write it out. */ 3614 swap_out_p = TRUE; 3615 3616 switch (dyn.d_tag) 3617 { 3618 case DT_RELENT: 3619 dyn.d_un.d_val = SCORE_ELF_REL_SIZE (dynobj); 3620 break; 3621 3622 case DT_STRSZ: 3623 /* Rewrite DT_STRSZ. */ 3624 dyn.d_un.d_val 3625 = _bfd_elf_strtab_size (elf_hash_table (info)->dynstr); 3626 break; 3627 3628 case DT_PLTGOT: 3629 s = elf_hash_table (info)->sgot; 3630 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 3631 break; 3632 3633 case DT_SCORE_BASE_ADDRESS: 3634 s = output_bfd->sections; 3635 BFD_ASSERT (s != NULL); 3636 dyn.d_un.d_ptr = s->vma & ~(bfd_vma) 0xffff; 3637 break; 3638 3639 case DT_SCORE_LOCAL_GOTNO: 3640 dyn.d_un.d_val = g->local_gotno; 3641 break; 3642 3643 case DT_SCORE_UNREFEXTNO: 3644 /* The index into the dynamic symbol table which is the 3645 entry of the first external symbol that is not 3646 referenced within the same object. */ 3647 dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1; 3648 break; 3649 3650 case DT_SCORE_GOTSYM: 3651 if (g->global_gotsym) 3652 { 3653 dyn.d_un.d_val = g->global_gotsym->dynindx; 3654 break; 3655 } 3656 /* In case if we don't have global got symbols we default 3657 to setting DT_SCORE_GOTSYM to the same value as 3658 DT_SCORE_SYMTABNO. */ 3659 /* Fall through. */ 3660 3661 case DT_SCORE_SYMTABNO: 3662 name = ".dynsym"; 3663 elemsize = SCORE_ELF_SYM_SIZE (output_bfd); 3664 s = bfd_get_linker_section (dynobj, name); 3665 dyn.d_un.d_val = s->size / elemsize; 3666 break; 3667 3668 case DT_SCORE_HIPAGENO: 3669 dyn.d_un.d_val = g->local_gotno - SCORE_RESERVED_GOTNO; 3670 break; 3671 3672 default: 3673 swap_out_p = FALSE; 3674 break; 3675 } 3676 3677 if (swap_out_p) 3678 (*get_elf_backend_data (dynobj)->s->swap_dyn_out) (dynobj, &dyn, b); 3679 } 3680 } 3681 3682 /* The first entry of the global offset table will be filled at 3683 runtime. The second entry will be used by some runtime loaders. 3684 This isn't the case of IRIX rld. */ 3685 if (sgot != NULL && sgot->size > 0) 3686 { 3687 score_bfd_put_32 (output_bfd, 0, sgot->contents); 3688 score_bfd_put_32 (output_bfd, 0x80000000, sgot->contents + SCORE_ELF_GOT_SIZE (output_bfd)); 3689 } 3690 3691 if (sgot != NULL) 3692 elf_section_data (sgot->output_section)->this_hdr.sh_entsize 3693 = SCORE_ELF_GOT_SIZE (output_bfd); 3694 3695 3696 /* We need to sort the entries of the dynamic relocation section. */ 3697 s = score_elf_rel_dyn_section (dynobj, FALSE); 3698 3699 if (s != NULL && s->size > (bfd_vma)2 * SCORE_ELF_REL_SIZE (output_bfd)) 3700 { 3701 reldyn_sorting_bfd = output_bfd; 3702 qsort ((Elf32_External_Rel *) s->contents + 1, s->reloc_count - 1, 3703 sizeof (Elf32_External_Rel), score_elf_sort_dynamic_relocs); 3704 } 3705 3706 return TRUE; 3707 } 3708 3709 /* This function set up the ELF section header for a BFD section in preparation for writing 3710 it out. This is where the flags and type fields are set for unusual sections. */ 3711 static bfd_boolean 3712 s3_bfd_score_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, 3713 Elf_Internal_Shdr *hdr, 3714 asection *sec) 3715 { 3716 const char *name; 3717 3718 name = bfd_get_section_name (abfd, sec); 3719 3720 if (strcmp (name, ".got") == 0 3721 || strcmp (name, ".srdata") == 0 3722 || strcmp (name, ".sdata") == 0 3723 || strcmp (name, ".sbss") == 0) 3724 hdr->sh_flags |= SHF_SCORE_GPREL; 3725 3726 return TRUE; 3727 } 3728 3729 /* This function do additional processing on the ELF section header before writing 3730 it out. This is used to set the flags and type fields for some sections. */ 3731 3732 /* assign_file_positions_except_relocs() check section flag and if it is allocatable, 3733 warning message will be issued. backend_fake_section is called before 3734 assign_file_positions_except_relocs(); backend_section_processing after it. so, we 3735 modify section flag there, but not backend_fake_section. */ 3736 static bfd_boolean 3737 s3_bfd_score_elf_section_processing (bfd *abfd ATTRIBUTE_UNUSED, Elf_Internal_Shdr *hdr) 3738 { 3739 if (hdr->bfd_section != NULL) 3740 { 3741 const char *name = bfd_get_section_name (abfd, hdr->bfd_section); 3742 3743 if (strcmp (name, ".sdata") == 0) 3744 { 3745 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_SCORE_GPREL; 3746 hdr->sh_type = SHT_PROGBITS; 3747 } 3748 else if (strcmp (name, ".sbss") == 0) 3749 { 3750 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_SCORE_GPREL; 3751 hdr->sh_type = SHT_NOBITS; 3752 } 3753 else if (strcmp (name, ".srdata") == 0) 3754 { 3755 hdr->sh_flags |= SHF_ALLOC | SHF_SCORE_GPREL; 3756 hdr->sh_type = SHT_PROGBITS; 3757 } 3758 } 3759 3760 return TRUE; 3761 } 3762 3763 static bfd_boolean 3764 s3_bfd_score_elf_write_section (bfd *output_bfd, asection *sec, bfd_byte *contents) 3765 { 3766 bfd_byte *to, *from, *end; 3767 int i; 3768 3769 if (strcmp (sec->name, ".pdr") != 0) 3770 return FALSE; 3771 3772 if (score_elf_section_data (sec)->u.tdata == NULL) 3773 return FALSE; 3774 3775 to = contents; 3776 end = contents + sec->size; 3777 for (from = contents, i = 0; from < end; from += PDR_SIZE, i++) 3778 { 3779 if ((score_elf_section_data (sec)->u.tdata)[i] == 1) 3780 continue; 3781 3782 if (to != from) 3783 memcpy (to, from, PDR_SIZE); 3784 3785 to += PDR_SIZE; 3786 } 3787 bfd_set_section_contents (output_bfd, sec->output_section, contents, 3788 (file_ptr) sec->output_offset, sec->size); 3789 3790 return TRUE; 3791 } 3792 3793 /* Copy data from a SCORE ELF indirect symbol to its direct symbol, hiding the old 3794 indirect symbol. Process additional relocation information. */ 3795 static void 3796 s3_bfd_score_elf_copy_indirect_symbol (struct bfd_link_info *info, 3797 struct elf_link_hash_entry *dir, 3798 struct elf_link_hash_entry *ind) 3799 { 3800 struct score_elf_link_hash_entry *dirscore, *indscore; 3801 3802 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 3803 3804 if (ind->root.type != bfd_link_hash_indirect) 3805 return; 3806 3807 dirscore = (struct score_elf_link_hash_entry *) dir; 3808 indscore = (struct score_elf_link_hash_entry *) ind; 3809 dirscore->possibly_dynamic_relocs += indscore->possibly_dynamic_relocs; 3810 3811 if (indscore->readonly_reloc) 3812 dirscore->readonly_reloc = TRUE; 3813 3814 if (indscore->no_fn_stub) 3815 dirscore->no_fn_stub = TRUE; 3816 } 3817 3818 /* Remove information about discarded functions from other sections which mention them. */ 3819 static bfd_boolean 3820 s3_bfd_score_elf_discard_info (bfd *abfd, struct elf_reloc_cookie *cookie, 3821 struct bfd_link_info *info) 3822 { 3823 asection *o; 3824 bfd_boolean ret = FALSE; 3825 unsigned char *tdata; 3826 size_t i, skip; 3827 3828 o = bfd_get_section_by_name (abfd, ".pdr"); 3829 if ((!o) || (o->size == 0) || (o->size % PDR_SIZE != 0) 3830 || (o->output_section != NULL && bfd_is_abs_section (o->output_section))) 3831 return FALSE; 3832 3833 tdata = bfd_zmalloc (o->size / PDR_SIZE); 3834 if (!tdata) 3835 return FALSE; 3836 3837 cookie->rels = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, info->keep_memory); 3838 if (!cookie->rels) 3839 { 3840 free (tdata); 3841 return FALSE; 3842 } 3843 3844 cookie->rel = cookie->rels; 3845 cookie->relend = cookie->rels + o->reloc_count; 3846 3847 for (i = 0, skip = 0; i < o->size; i++) 3848 { 3849 if (bfd_elf_reloc_symbol_deleted_p (i * PDR_SIZE, cookie)) 3850 { 3851 tdata[i] = 1; 3852 skip++; 3853 } 3854 } 3855 3856 if (skip != 0) 3857 { 3858 score_elf_section_data (o)->u.tdata = tdata; 3859 o->size -= skip * PDR_SIZE; 3860 ret = TRUE; 3861 } 3862 else 3863 free (tdata); 3864 3865 if (!info->keep_memory) 3866 free (cookie->rels); 3867 3868 return ret; 3869 } 3870 3871 /* Signal that discard_info() has removed the discarded relocations for this section. */ 3872 static bfd_boolean 3873 s3_bfd_score_elf_ignore_discarded_relocs (asection *sec) 3874 { 3875 if (strcmp (sec->name, ".pdr") == 0) 3876 return TRUE; 3877 return FALSE; 3878 } 3879 3880 /* Return the section that should be marked against GC for a given 3881 relocation. */ 3882 static asection * 3883 s3_bfd_score_elf_gc_mark_hook (asection *sec, 3884 struct bfd_link_info *info, 3885 Elf_Internal_Rela *rel, 3886 struct elf_link_hash_entry *h, 3887 Elf_Internal_Sym *sym) 3888 { 3889 if (h != NULL) 3890 switch (ELF32_R_TYPE (rel->r_info)) 3891 { 3892 case R_SCORE_GNU_VTINHERIT: 3893 case R_SCORE_GNU_VTENTRY: 3894 return NULL; 3895 } 3896 3897 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 3898 } 3899 3900 /* Support for core dump NOTE sections. */ 3901 3902 static bfd_boolean 3903 s3_bfd_score_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 3904 { 3905 int offset; 3906 unsigned int raw_size; 3907 3908 switch (note->descsz) 3909 { 3910 default: 3911 return FALSE; 3912 3913 case 148: /* Linux/Score 32-bit. */ 3914 /* pr_cursig */ 3915 elf_tdata (abfd)->core->signal 3916 = score_bfd_get_16 (abfd, note->descdata + 12); 3917 3918 /* pr_pid */ 3919 elf_tdata (abfd)->core->lwpid 3920 = score_bfd_get_32 (abfd, note->descdata + 24); 3921 3922 /* pr_reg */ 3923 offset = 72; 3924 raw_size = 72; 3925 3926 break; 3927 } 3928 3929 /* Make a ".reg/999" section. */ 3930 return _bfd_elfcore_make_pseudosection (abfd, ".reg", raw_size, 3931 note->descpos + offset); 3932 } 3933 3934 static bfd_boolean 3935 s3_bfd_score_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 3936 { 3937 switch (note->descsz) 3938 { 3939 default: 3940 return FALSE; 3941 3942 case 124: /* Linux/Score elf_prpsinfo. */ 3943 elf_tdata (abfd)->core->program 3944 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); 3945 elf_tdata (abfd)->core->command 3946 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); 3947 } 3948 3949 /* Note that for some reason, a spurious space is tacked 3950 onto the end of the args in some (at least one anyway) 3951 implementations, so strip it off if it exists. */ 3952 3953 { 3954 char *command = elf_tdata (abfd)->core->command; 3955 int n = strlen (command); 3956 3957 if (0 < n && command[n - 1] == ' ') 3958 command[n - 1] = '\0'; 3959 } 3960 3961 return TRUE; 3962 } 3963 3964 3965 /* Score BFD functions. */ 3966 static reloc_howto_type * 3967 s3_elf32_score_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code) 3968 { 3969 unsigned int i; 3970 3971 for (i = 0; i < ARRAY_SIZE (elf32_score_reloc_map); i++) 3972 if (elf32_score_reloc_map[i].bfd_reloc_val == code) 3973 return &elf32_score_howto_table[elf32_score_reloc_map[i].elf_reloc_val]; 3974 3975 return NULL; 3976 } 3977 3978 static reloc_howto_type * 3979 elf32_score_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 3980 const char *r_name) 3981 { 3982 unsigned int i; 3983 3984 for (i = 0; 3985 i < (sizeof (elf32_score_howto_table) 3986 / sizeof (elf32_score_howto_table[0])); 3987 i++) 3988 if (elf32_score_howto_table[i].name != NULL 3989 && strcasecmp (elf32_score_howto_table[i].name, r_name) == 0) 3990 return &elf32_score_howto_table[i]; 3991 3992 return NULL; 3993 } 3994 3995 static bfd_boolean 3996 s3_elf32_score_print_private_bfd_data (bfd *abfd, void * ptr) 3997 { 3998 FILE *file = (FILE *) ptr; 3999 4000 BFD_ASSERT (abfd != NULL && ptr != NULL); 4001 4002 /* Print normal ELF private data. */ 4003 _bfd_elf_print_private_bfd_data (abfd, ptr); 4004 4005 /* xgettext:c-format */ 4006 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); 4007 if (elf_elfheader (abfd)->e_flags & EF_SCORE_PIC) 4008 { 4009 fprintf (file, _(" [pic]")); 4010 } 4011 if (elf_elfheader (abfd)->e_flags & EF_SCORE_FIXDEP) 4012 { 4013 fprintf (file, _(" [fix dep]")); 4014 } 4015 fputc ('\n', file); 4016 4017 return TRUE; 4018 } 4019 4020 static bfd_boolean 4021 s3_elf32_score_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) 4022 { 4023 bfd *obfd = info->output_bfd; 4024 flagword in_flags; 4025 flagword out_flags; 4026 4027 if (!_bfd_generic_verify_endian_match (ibfd, info)) 4028 return FALSE; 4029 4030 in_flags = elf_elfheader (ibfd)->e_flags; 4031 out_flags = elf_elfheader (obfd)->e_flags; 4032 4033 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour 4034 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 4035 return TRUE; 4036 4037 in_flags = elf_elfheader (ibfd)->e_flags; 4038 out_flags = elf_elfheader (obfd)->e_flags; 4039 4040 if (! elf_flags_init (obfd)) 4041 { 4042 elf_flags_init (obfd) = TRUE; 4043 elf_elfheader (obfd)->e_flags = in_flags; 4044 4045 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) 4046 && bfd_get_arch_info (obfd)->the_default) 4047 { 4048 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); 4049 } 4050 4051 return TRUE; 4052 } 4053 4054 if (((in_flags & EF_SCORE_PIC) != 0) != ((out_flags & EF_SCORE_PIC) != 0)) 4055 _bfd_error_handler 4056 (_("%B: warning: linking PIC files with non-PIC files"), ibfd); 4057 4058 /* FIXME: Maybe dependency fix compatibility should be checked here. */ 4059 4060 return TRUE; 4061 } 4062 4063 static bfd_boolean 4064 s3_elf32_score_new_section_hook (bfd *abfd, asection *sec) 4065 { 4066 struct _score_elf_section_data *sdata; 4067 bfd_size_type amt = sizeof (*sdata); 4068 4069 sdata = bfd_zalloc (abfd, amt); 4070 if (sdata == NULL) 4071 return FALSE; 4072 sec->used_by_bfd = sdata; 4073 4074 return _bfd_elf_new_section_hook (abfd, sec); 4075 } 4076 4077 /*****************************************************************************/ 4078 4079 /* s3_s7: backend hooks. */ 4080 static void 4081 _bfd_score_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, 4082 arelent *bfd_reloc, 4083 Elf_Internal_Rela *elf_reloc) 4084 { 4085 if (bfd_get_mach (abfd) == bfd_mach_score3) 4086 return s3_bfd_score_info_to_howto (abfd, bfd_reloc, elf_reloc); 4087 else 4088 return s7_bfd_score_info_to_howto (abfd, bfd_reloc, elf_reloc); 4089 } 4090 4091 static bfd_boolean 4092 _bfd_score_elf_relocate_section (bfd *output_bfd, 4093 struct bfd_link_info *info, 4094 bfd *input_bfd, 4095 asection *input_section, 4096 bfd_byte *contents, 4097 Elf_Internal_Rela *relocs, 4098 Elf_Internal_Sym *local_syms, 4099 asection **local_sections) 4100 { 4101 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4102 return s3_bfd_score_elf_relocate_section (output_bfd, 4103 info, input_bfd, input_section, contents, relocs, 4104 local_syms, local_sections); 4105 else 4106 return s7_bfd_score_elf_relocate_section (output_bfd, 4107 info, input_bfd, input_section, contents, relocs, 4108 local_syms, local_sections); 4109 } 4110 4111 static bfd_boolean 4112 _bfd_score_elf_check_relocs (bfd *abfd, 4113 struct bfd_link_info *info, 4114 asection *sec, 4115 const Elf_Internal_Rela *relocs) 4116 { 4117 if (bfd_get_mach (abfd) == bfd_mach_score3) 4118 return s3_bfd_score_elf_check_relocs (abfd, info, sec, relocs); 4119 else 4120 return s7_bfd_score_elf_check_relocs (abfd, info, sec, relocs); 4121 } 4122 4123 static bfd_boolean 4124 _bfd_score_elf_add_symbol_hook (bfd *abfd, 4125 struct bfd_link_info *info ATTRIBUTE_UNUSED, 4126 Elf_Internal_Sym *sym, 4127 const char **namep ATTRIBUTE_UNUSED, 4128 flagword *flagsp ATTRIBUTE_UNUSED, 4129 asection **secp, 4130 bfd_vma *valp) 4131 { 4132 if (bfd_get_mach (abfd) == bfd_mach_score3) 4133 return s3_bfd_score_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, 4134 secp, valp); 4135 else 4136 return s7_bfd_score_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, 4137 secp, valp); 4138 } 4139 4140 static void 4141 _bfd_score_elf_symbol_processing (bfd *abfd, asymbol *asym) 4142 { 4143 if (bfd_get_mach (abfd) == bfd_mach_score3) 4144 return s3_bfd_score_elf_symbol_processing (abfd, asym); 4145 else 4146 return s7_bfd_score_elf_symbol_processing (abfd, asym); 4147 } 4148 4149 static int 4150 _bfd_score_elf_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED, 4151 const char *name ATTRIBUTE_UNUSED, 4152 Elf_Internal_Sym *sym, 4153 asection *input_sec, 4154 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) 4155 { 4156 /* If link a empty .o, then this filed is NULL. */ 4157 if (info->input_bfds == NULL) 4158 { 4159 /* If we see a common symbol, which implies a relocatable link, then 4160 if a symbol was small common in an input file, mark it as small 4161 common in the output file. */ 4162 if (sym->st_shndx == SHN_COMMON && strcmp (input_sec->name, ".scommon") == 0) 4163 sym->st_shndx = SHN_SCORE_SCOMMON; 4164 return 1; 4165 } 4166 4167 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4168 return s3_bfd_score_elf_link_output_symbol_hook (info, name, sym, input_sec, h); 4169 else 4170 return s7_bfd_score_elf_link_output_symbol_hook (info, name, sym, input_sec, h); 4171 } 4172 4173 static bfd_boolean 4174 _bfd_score_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, 4175 asection *sec, 4176 int *retval) 4177 { 4178 if (bfd_get_mach (abfd) == bfd_mach_score3) 4179 return s3_bfd_score_elf_section_from_bfd_section (abfd, sec, retval); 4180 else 4181 return s7_bfd_score_elf_section_from_bfd_section (abfd, sec, retval); 4182 } 4183 4184 static bfd_boolean 4185 _bfd_score_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 4186 struct elf_link_hash_entry *h) 4187 { 4188 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4189 return s3_bfd_score_elf_adjust_dynamic_symbol (info, h); 4190 else 4191 return s7_bfd_score_elf_adjust_dynamic_symbol (info, h); 4192 } 4193 4194 static bfd_boolean 4195 _bfd_score_elf_always_size_sections (bfd *output_bfd, 4196 struct bfd_link_info *info) 4197 { 4198 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4199 return s3_bfd_score_elf_always_size_sections (output_bfd, info); 4200 else 4201 return s7_bfd_score_elf_always_size_sections (output_bfd, info); 4202 } 4203 4204 static bfd_boolean 4205 _bfd_score_elf_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) 4206 { 4207 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4208 return s3_bfd_score_elf_size_dynamic_sections (output_bfd, info); 4209 else 4210 return s7_bfd_score_elf_size_dynamic_sections (output_bfd, info); 4211 } 4212 4213 static bfd_boolean 4214 _bfd_score_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 4215 { 4216 if (bfd_get_mach (abfd) == bfd_mach_score3) 4217 return s3_bfd_score_elf_create_dynamic_sections (abfd, info); 4218 else 4219 return s7_bfd_score_elf_create_dynamic_sections (abfd, info); 4220 } 4221 4222 static bfd_boolean 4223 _bfd_score_elf_finish_dynamic_symbol (bfd *output_bfd, 4224 struct bfd_link_info *info, 4225 struct elf_link_hash_entry *h, 4226 Elf_Internal_Sym *sym) 4227 { 4228 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4229 return s3_bfd_score_elf_finish_dynamic_symbol (output_bfd, info, h, sym); 4230 else 4231 return s7_bfd_score_elf_finish_dynamic_symbol (output_bfd, info, h, sym); 4232 } 4233 4234 static bfd_boolean 4235 _bfd_score_elf_finish_dynamic_sections (bfd *output_bfd, 4236 struct bfd_link_info *info) 4237 { 4238 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4239 return s3_bfd_score_elf_finish_dynamic_sections (output_bfd, info); 4240 else 4241 return s7_bfd_score_elf_finish_dynamic_sections (output_bfd, info); 4242 } 4243 4244 static bfd_boolean 4245 _bfd_score_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, 4246 Elf_Internal_Shdr *hdr, 4247 asection *sec) 4248 { 4249 if (bfd_get_mach (abfd) == bfd_mach_score3) 4250 return s3_bfd_score_elf_fake_sections (abfd, hdr, sec); 4251 else 4252 return s7_bfd_score_elf_fake_sections (abfd, hdr, sec); 4253 } 4254 4255 static bfd_boolean 4256 _bfd_score_elf_section_processing (bfd *abfd ATTRIBUTE_UNUSED, Elf_Internal_Shdr *hdr) 4257 { 4258 if (bfd_get_mach (abfd) == bfd_mach_score3) 4259 return s3_bfd_score_elf_section_processing (abfd, hdr); 4260 else 4261 return s7_bfd_score_elf_section_processing (abfd, hdr); 4262 } 4263 4264 static bfd_boolean 4265 _bfd_score_elf_write_section (bfd *output_bfd, 4266 struct bfd_link_info *link_info ATTRIBUTE_UNUSED, 4267 asection *sec, bfd_byte *contents) 4268 { 4269 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4270 return s3_bfd_score_elf_write_section (output_bfd, sec, contents); 4271 else 4272 return s7_bfd_score_elf_write_section (output_bfd, sec, contents); 4273 } 4274 4275 static void 4276 _bfd_score_elf_copy_indirect_symbol (struct bfd_link_info *info, 4277 struct elf_link_hash_entry *dir, 4278 struct elf_link_hash_entry *ind) 4279 { 4280 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4281 return s3_bfd_score_elf_copy_indirect_symbol (info, dir, ind); 4282 else 4283 return s7_bfd_score_elf_copy_indirect_symbol (info, dir, ind); 4284 } 4285 4286 static void 4287 _bfd_score_elf_hide_symbol (struct bfd_link_info *info, 4288 struct elf_link_hash_entry *entry, 4289 bfd_boolean force_local) 4290 { 4291 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4292 return s3_bfd_score_elf_hide_symbol (info, entry, force_local); 4293 else 4294 return s7_bfd_score_elf_hide_symbol (info, entry, force_local); 4295 } 4296 4297 static bfd_boolean 4298 _bfd_score_elf_discard_info (bfd *abfd, struct elf_reloc_cookie *cookie, 4299 struct bfd_link_info *info) 4300 { 4301 if (bfd_get_mach (abfd) == bfd_mach_score3) 4302 return s3_bfd_score_elf_discard_info (abfd, cookie, info); 4303 else 4304 return s7_bfd_score_elf_discard_info (abfd, cookie, info); 4305 } 4306 4307 static bfd_boolean 4308 _bfd_score_elf_ignore_discarded_relocs (asection *sec) 4309 { 4310 if (bfd_get_mach (sec->owner) == bfd_mach_score3) 4311 return s3_bfd_score_elf_ignore_discarded_relocs (sec); 4312 else 4313 return s7_bfd_score_elf_ignore_discarded_relocs (sec); 4314 } 4315 4316 static asection * 4317 _bfd_score_elf_gc_mark_hook (asection *sec, 4318 struct bfd_link_info *info, 4319 Elf_Internal_Rela *rel, 4320 struct elf_link_hash_entry *h, 4321 Elf_Internal_Sym *sym) 4322 { 4323 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4324 return s3_bfd_score_elf_gc_mark_hook (sec, info, rel, h, sym); 4325 else 4326 return s7_bfd_score_elf_gc_mark_hook (sec, info, rel, h, sym); 4327 } 4328 4329 static bfd_boolean 4330 _bfd_score_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 4331 { 4332 if (bfd_get_mach (abfd) == bfd_mach_score3) 4333 return s3_bfd_score_elf_grok_prstatus (abfd, note); 4334 else 4335 return s7_bfd_score_elf_grok_prstatus (abfd, note); 4336 } 4337 4338 static bfd_boolean 4339 _bfd_score_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 4340 { 4341 if (bfd_get_mach (abfd) == bfd_mach_score3) 4342 return s3_bfd_score_elf_grok_psinfo (abfd, note); 4343 else 4344 return s7_bfd_score_elf_grok_psinfo (abfd, note); 4345 } 4346 4347 static reloc_howto_type * 4348 elf32_score_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code) 4349 { 4350 /* s3: NOTE!!! 4351 gas will call elf32_score_reloc_type_lookup, and don't write elf file. 4352 So just using score3, but we don't know ld will call this or not. 4353 If so, this way can't work. */ 4354 4355 if (score3) 4356 return s3_elf32_score_reloc_type_lookup (abfd, code); 4357 else 4358 return s7_elf32_score_reloc_type_lookup (abfd, code); 4359 } 4360 4361 /* Create a score elf linker hash table. 4362 This is a copy of _bfd_elf_link_hash_table_create() except with a 4363 different hash table entry creation function. */ 4364 4365 static struct bfd_link_hash_table * 4366 elf32_score_link_hash_table_create (bfd *abfd) 4367 { 4368 struct elf_link_hash_table *ret; 4369 bfd_size_type amt = sizeof (struct elf_link_hash_table); 4370 4371 ret = (struct elf_link_hash_table *) bfd_zmalloc (amt); 4372 if (ret == NULL) 4373 return NULL; 4374 4375 if (!_bfd_elf_link_hash_table_init (ret, abfd, score_elf_link_hash_newfunc, 4376 sizeof (struct score_elf_link_hash_entry), 4377 GENERIC_ELF_DATA)) 4378 { 4379 free (ret); 4380 return NULL; 4381 } 4382 4383 return &ret->root; 4384 } 4385 4386 static bfd_boolean 4387 elf32_score_print_private_bfd_data (bfd *abfd, void * ptr) 4388 { 4389 if (bfd_get_mach (abfd) == bfd_mach_score3) 4390 return s3_elf32_score_print_private_bfd_data (abfd, ptr); 4391 else 4392 return s7_elf32_score_print_private_bfd_data (abfd, ptr); 4393 } 4394 4395 static bfd_boolean 4396 elf32_score_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) 4397 { 4398 if (bfd_get_mach (info->output_bfd) == bfd_mach_score3) 4399 return s3_elf32_score_merge_private_bfd_data (ibfd, info); 4400 else 4401 return s7_elf32_score_merge_private_bfd_data (ibfd, info); 4402 } 4403 4404 static bfd_boolean 4405 elf32_score_new_section_hook (bfd *abfd, asection *sec) 4406 { 4407 if (bfd_get_mach (abfd) == bfd_mach_score3) 4408 return s3_elf32_score_new_section_hook (abfd, sec); 4409 else 4410 return s7_elf32_score_new_section_hook (abfd, sec); 4411 } 4412 4413 4414 /* s3_s7: don't need to split. */ 4415 4416 /* Set the right machine number. */ 4417 static bfd_boolean 4418 _bfd_score_elf_score_object_p (bfd * abfd) 4419 { 4420 int e_set = bfd_mach_score7; 4421 4422 if (elf_elfheader (abfd)->e_machine == EM_SCORE) 4423 { 4424 int e_mach = elf_elfheader (abfd)->e_flags & EF_SCORE_MACH & EF_OMIT_PIC_FIXDD; 4425 switch (e_mach) 4426 { 4427 /* Set default target is score7. */ 4428 default: 4429 case E_SCORE_MACH_SCORE7: 4430 e_set = bfd_mach_score7; 4431 break; 4432 4433 case E_SCORE_MACH_SCORE3: 4434 e_set = bfd_mach_score3; 4435 break; 4436 } 4437 } 4438 4439 return bfd_default_set_arch_mach (abfd, bfd_arch_score, e_set); 4440 } 4441 4442 bfd_boolean 4443 _bfd_score_elf_common_definition (Elf_Internal_Sym *sym) 4444 { 4445 return (sym->st_shndx == SHN_COMMON || sym->st_shndx == SHN_SCORE_SCOMMON); 4446 } 4447 4448 /*****************************************************************************/ 4449 4450 4451 #define USE_REL 1 4452 #define TARGET_LITTLE_SYM score_elf32_le_vec 4453 #define TARGET_LITTLE_NAME "elf32-littlescore" 4454 #define TARGET_BIG_SYM score_elf32_be_vec 4455 #define TARGET_BIG_NAME "elf32-bigscore" 4456 #define ELF_ARCH bfd_arch_score 4457 #define ELF_MACHINE_CODE EM_SCORE 4458 #define ELF_MACHINE_ALT1 EM_SCORE_OLD 4459 #define ELF_MAXPAGESIZE 0x8000 4460 4461 #define elf_info_to_howto 0 4462 #define elf_info_to_howto_rel _bfd_score_info_to_howto 4463 #define elf_backend_relocate_section _bfd_score_elf_relocate_section 4464 #define elf_backend_check_relocs _bfd_score_elf_check_relocs 4465 #define elf_backend_add_symbol_hook _bfd_score_elf_add_symbol_hook 4466 #define elf_backend_symbol_processing _bfd_score_elf_symbol_processing 4467 #define elf_backend_link_output_symbol_hook \ 4468 _bfd_score_elf_link_output_symbol_hook 4469 #define elf_backend_section_from_bfd_section \ 4470 _bfd_score_elf_section_from_bfd_section 4471 #define elf_backend_adjust_dynamic_symbol \ 4472 _bfd_score_elf_adjust_dynamic_symbol 4473 #define elf_backend_always_size_sections \ 4474 _bfd_score_elf_always_size_sections 4475 #define elf_backend_size_dynamic_sections \ 4476 _bfd_score_elf_size_dynamic_sections 4477 #define elf_backend_omit_section_dynsym \ 4478 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) 4479 #define elf_backend_create_dynamic_sections \ 4480 _bfd_score_elf_create_dynamic_sections 4481 #define elf_backend_finish_dynamic_symbol \ 4482 _bfd_score_elf_finish_dynamic_symbol 4483 #define elf_backend_finish_dynamic_sections \ 4484 _bfd_score_elf_finish_dynamic_sections 4485 #define elf_backend_fake_sections _bfd_score_elf_fake_sections 4486 #define elf_backend_section_processing _bfd_score_elf_section_processing 4487 #define elf_backend_write_section _bfd_score_elf_write_section 4488 #define elf_backend_copy_indirect_symbol _bfd_score_elf_copy_indirect_symbol 4489 #define elf_backend_hide_symbol _bfd_score_elf_hide_symbol 4490 #define elf_backend_discard_info _bfd_score_elf_discard_info 4491 #define elf_backend_ignore_discarded_relocs \ 4492 _bfd_score_elf_ignore_discarded_relocs 4493 #define elf_backend_gc_mark_hook _bfd_score_elf_gc_mark_hook 4494 #define elf_backend_grok_prstatus _bfd_score_elf_grok_prstatus 4495 #define elf_backend_grok_psinfo _bfd_score_elf_grok_psinfo 4496 #define elf_backend_can_gc_sections 1 4497 #define elf_backend_want_plt_sym 0 4498 #define elf_backend_got_header_size (4 * SCORE_RESERVED_GOTNO) 4499 #define elf_backend_plt_header_size 0 4500 #define elf_backend_collect TRUE 4501 #define elf_backend_type_change_ok TRUE 4502 #define elf_backend_object_p _bfd_score_elf_score_object_p 4503 4504 #define bfd_elf32_bfd_reloc_type_lookup elf32_score_reloc_type_lookup 4505 #define bfd_elf32_bfd_reloc_name_lookup \ 4506 elf32_score_reloc_name_lookup 4507 #define bfd_elf32_bfd_link_hash_table_create elf32_score_link_hash_table_create 4508 #define bfd_elf32_bfd_print_private_bfd_data elf32_score_print_private_bfd_data 4509 #define bfd_elf32_bfd_merge_private_bfd_data elf32_score_merge_private_bfd_data 4510 #define bfd_elf32_new_section_hook elf32_score_new_section_hook 4511 4512 #include "elf32-target.h" 4513
Indexes created Thu Apr 30 00:23:01 UTC 2026