1 /* 32-bit ELF support for S+core. 2 Copyright (C) 2006-2016 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 if (s == NULL 1433 || ! bfd_set_section_alignment (abfd, s, 4)) 1434 return FALSE; 1435 1436 /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the 1437 linker script because we don't want to define the symbol if we 1438 are not creating a global offset table. */ 1439 bh = NULL; 1440 if (! (_bfd_generic_link_add_one_symbol 1441 (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, 1442 0, NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) 1443 return FALSE; 1444 1445 h = (struct elf_link_hash_entry *) bh; 1446 h->non_elf = 0; 1447 h->def_regular = 1; 1448 h->type = STT_OBJECT; 1449 1450 if (bfd_link_pic (info) && ! bfd_elf_link_record_dynamic_symbol (info, h)) 1451 return FALSE; 1452 1453 amt = sizeof (struct score_got_info); 1454 g = bfd_alloc (abfd, amt); 1455 if (g == NULL) 1456 return FALSE; 1457 1458 g->global_gotsym = NULL; 1459 g->global_gotno = 0; 1460 1461 g->local_gotno = SCORE_RESERVED_GOTNO; 1462 g->assigned_gotno = SCORE_RESERVED_GOTNO; 1463 g->next = NULL; 1464 1465 g->got_entries = htab_try_create (1, score_elf_got_entry_hash, 1466 score_elf_got_entry_eq, NULL); 1467 if (g->got_entries == NULL) 1468 return FALSE; 1469 score_elf_section_data (s)->u.got_info = g; 1470 score_elf_section_data (s)->elf.this_hdr.sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_SCORE_GPREL; 1471 1472 return TRUE; 1473 } 1474 1475 /* Calculate the %high function. */ 1476 static bfd_vma 1477 score_elf_high (bfd_vma value) 1478 { 1479 return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff; 1480 } 1481 1482 /* Create a local GOT entry for VALUE. Return the index of the entry, 1483 or -1 if it could not be created. */ 1484 static struct score_got_entry * 1485 score_elf_create_local_got_entry (bfd *abfd, 1486 bfd *ibfd ATTRIBUTE_UNUSED, 1487 struct score_got_info *gg, 1488 asection *sgot, bfd_vma value, 1489 unsigned long r_symndx ATTRIBUTE_UNUSED, 1490 struct score_elf_link_hash_entry *h ATTRIBUTE_UNUSED, 1491 int r_type ATTRIBUTE_UNUSED) 1492 { 1493 struct score_got_entry entry, **loc; 1494 struct score_got_info *g; 1495 1496 entry.abfd = NULL; 1497 entry.symndx = -1; 1498 entry.d.address = value; 1499 1500 g = gg; 1501 loc = (struct score_got_entry **) htab_find_slot (g->got_entries, &entry, INSERT); 1502 if (*loc) 1503 return *loc; 1504 1505 entry.gotidx = SCORE_ELF_GOT_SIZE (abfd) * g->assigned_gotno++; 1506 1507 *loc = bfd_alloc (abfd, sizeof entry); 1508 1509 if (! *loc) 1510 return NULL; 1511 1512 memcpy (*loc, &entry, sizeof entry); 1513 1514 if (g->assigned_gotno >= g->local_gotno) 1515 { 1516 (*loc)->gotidx = -1; 1517 /* We didn't allocate enough space in the GOT. */ 1518 (*_bfd_error_handler) 1519 (_("not enough GOT space for local GOT entries")); 1520 bfd_set_error (bfd_error_bad_value); 1521 return NULL; 1522 } 1523 1524 score_bfd_put_32 (abfd, value, (sgot->contents + entry.gotidx)); 1525 1526 return *loc; 1527 } 1528 1529 /* Find a GOT entry whose higher-order 16 bits are the same as those 1530 for value. Return the index into the GOT for this entry. */ 1531 static bfd_vma 1532 score_elf_got16_entry (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, 1533 bfd_vma value, bfd_boolean external) 1534 { 1535 asection *sgot; 1536 struct score_got_info *g; 1537 struct score_got_entry *entry; 1538 1539 if (!external) 1540 { 1541 /* Although the ABI says that it is "the high-order 16 bits" that we 1542 want, it is really the %high value. The complete value is 1543 calculated with a `addiu' of a LO16 relocation, just as with a 1544 HI16/LO16 pair. */ 1545 value = score_elf_high (value) << 16; 1546 } 1547 1548 g = score_elf_got_info (elf_hash_table (info)->dynobj, &sgot); 1549 1550 entry = score_elf_create_local_got_entry (abfd, ibfd, g, sgot, value, 0, NULL, 1551 R_SCORE_GOT15); 1552 if (entry) 1553 return entry->gotidx; 1554 else 1555 return MINUS_ONE; 1556 } 1557 1558 static void 1559 s3_bfd_score_elf_hide_symbol (struct bfd_link_info *info, 1560 struct elf_link_hash_entry *entry, 1561 bfd_boolean force_local) 1562 { 1563 bfd *dynobj; 1564 asection *got; 1565 struct score_got_info *g; 1566 struct score_elf_link_hash_entry *h; 1567 1568 h = (struct score_elf_link_hash_entry *) entry; 1569 if (h->forced_local) 1570 return; 1571 h->forced_local = TRUE; 1572 1573 dynobj = elf_hash_table (info)->dynobj; 1574 if (dynobj != NULL && force_local) 1575 { 1576 got = score_elf_got_section (dynobj, FALSE); 1577 if (got == NULL) 1578 return; 1579 g = score_elf_section_data (got)->u.got_info; 1580 1581 if (g->next) 1582 { 1583 struct score_got_entry e; 1584 struct score_got_info *gg = g; 1585 1586 /* Since we're turning what used to be a global symbol into a 1587 local one, bump up the number of local entries of each GOT 1588 that had an entry for it. This will automatically decrease 1589 the number of global entries, since global_gotno is actually 1590 the upper limit of global entries. */ 1591 e.abfd = dynobj; 1592 e.symndx = -1; 1593 e.d.h = h; 1594 1595 for (g = g->next; g != gg; g = g->next) 1596 if (htab_find (g->got_entries, &e)) 1597 { 1598 BFD_ASSERT (g->global_gotno > 0); 1599 g->local_gotno++; 1600 g->global_gotno--; 1601 } 1602 1603 /* If this was a global symbol forced into the primary GOT, we 1604 no longer need an entry for it. We can't release the entry 1605 at this point, but we must at least stop counting it as one 1606 of the symbols that required a forced got entry. */ 1607 if (h->root.got.offset == 2) 1608 { 1609 BFD_ASSERT (gg->assigned_gotno > 0); 1610 gg->assigned_gotno--; 1611 } 1612 } 1613 else if (g->global_gotno == 0 && g->global_gotsym == NULL) 1614 /* If we haven't got through GOT allocation yet, just bump up the 1615 number of local entries, as this symbol won't be counted as 1616 global. */ 1617 g->local_gotno++; 1618 else if (h->root.got.offset == 1) 1619 { 1620 /* If we're past non-multi-GOT allocation and this symbol had 1621 been marked for a global got entry, give it a local entry 1622 instead. */ 1623 BFD_ASSERT (g->global_gotno > 0); 1624 g->local_gotno++; 1625 g->global_gotno--; 1626 } 1627 } 1628 1629 _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local); 1630 } 1631 1632 /* If H is a symbol that needs a global GOT entry, but has a dynamic 1633 symbol table index lower than any we've seen to date, record it for 1634 posterity. */ 1635 static bfd_boolean 1636 score_elf_record_global_got_symbol (struct elf_link_hash_entry *h, 1637 bfd *abfd, 1638 struct bfd_link_info *info, 1639 struct score_got_info *g) 1640 { 1641 struct score_got_entry entry, **loc; 1642 1643 /* A global symbol in the GOT must also be in the dynamic symbol table. */ 1644 if (h->dynindx == -1) 1645 { 1646 switch (ELF_ST_VISIBILITY (h->other)) 1647 { 1648 case STV_INTERNAL: 1649 case STV_HIDDEN: 1650 s3_bfd_score_elf_hide_symbol (info, h, TRUE); 1651 break; 1652 } 1653 if (!bfd_elf_link_record_dynamic_symbol (info, h)) 1654 return FALSE; 1655 } 1656 1657 entry.abfd = abfd; 1658 entry.symndx = -1; 1659 entry.d.h = (struct score_elf_link_hash_entry *)h; 1660 1661 loc = (struct score_got_entry **)htab_find_slot (g->got_entries, &entry, INSERT); 1662 1663 /* If we've already marked this entry as needing GOT space, we don't 1664 need to do it again. */ 1665 if (*loc) 1666 return TRUE; 1667 1668 *loc = bfd_alloc (abfd, sizeof entry); 1669 if (! *loc) 1670 return FALSE; 1671 1672 entry.gotidx = -1; 1673 1674 memcpy (*loc, &entry, sizeof (entry)); 1675 1676 if (h->got.offset != MINUS_ONE) 1677 return TRUE; 1678 1679 /* By setting this to a value other than -1, we are indicating that 1680 there needs to be a GOT entry for H. Avoid using zero, as the 1681 generic ELF copy_indirect_symbol tests for <= 0. */ 1682 h->got.offset = 1; 1683 1684 return TRUE; 1685 } 1686 1687 /* Reserve space in G for a GOT entry containing the value of symbol 1688 SYMNDX in input bfd ABDF, plus ADDEND. */ 1689 static bfd_boolean 1690 score_elf_record_local_got_symbol (bfd *abfd, 1691 long symndx, 1692 bfd_vma addend, 1693 struct score_got_info *g) 1694 { 1695 struct score_got_entry entry, **loc; 1696 1697 entry.abfd = abfd; 1698 entry.symndx = symndx; 1699 entry.d.addend = addend; 1700 loc = (struct score_got_entry **)htab_find_slot (g->got_entries, &entry, INSERT); 1701 1702 if (*loc) 1703 return TRUE; 1704 1705 entry.gotidx = g->local_gotno++; 1706 1707 *loc = bfd_alloc (abfd, sizeof(entry)); 1708 if (! *loc) 1709 return FALSE; 1710 1711 memcpy (*loc, &entry, sizeof (entry)); 1712 1713 return TRUE; 1714 } 1715 1716 /* Returns the GOT offset at which the indicated address can be found. 1717 If there is not yet a GOT entry for this value, create one. 1718 Returns -1 if no satisfactory GOT offset can be found. */ 1719 static bfd_vma 1720 score_elf_local_got_index (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, 1721 bfd_vma value, unsigned long r_symndx, 1722 struct score_elf_link_hash_entry *h, int r_type) 1723 { 1724 asection *sgot; 1725 struct score_got_info *g; 1726 struct score_got_entry *entry; 1727 1728 g = score_elf_got_info (elf_hash_table (info)->dynobj, &sgot); 1729 1730 entry = score_elf_create_local_got_entry (abfd, ibfd, g, sgot, value, 1731 r_symndx, h, r_type); 1732 if (!entry) 1733 return MINUS_ONE; 1734 1735 else 1736 return entry->gotidx; 1737 } 1738 1739 /* Returns the GOT index for the global symbol indicated by H. */ 1740 1741 static bfd_vma 1742 score_elf_global_got_index (bfd *abfd, struct elf_link_hash_entry *h) 1743 { 1744 bfd_vma got_index; 1745 asection *sgot; 1746 struct score_got_info *g; 1747 long global_got_dynindx = 0; 1748 1749 g = score_elf_got_info (abfd, &sgot); 1750 if (g->global_gotsym != NULL) 1751 global_got_dynindx = g->global_gotsym->dynindx; 1752 1753 /* Once we determine the global GOT entry with the lowest dynamic 1754 symbol table index, we must put all dynamic symbols with greater 1755 indices into the GOT. That makes it easy to calculate the GOT 1756 offset. */ 1757 BFD_ASSERT (h->dynindx >= global_got_dynindx); 1758 got_index = ((h->dynindx - global_got_dynindx + g->local_gotno) * SCORE_ELF_GOT_SIZE (abfd)); 1759 BFD_ASSERT (got_index < sgot->size); 1760 1761 return got_index; 1762 } 1763 1764 /* Returns the offset for the entry at the INDEXth position in the GOT. */ 1765 1766 static bfd_vma 1767 score_elf_got_offset_from_index (bfd *dynobj, 1768 bfd *output_bfd, 1769 bfd *input_bfd ATTRIBUTE_UNUSED, 1770 bfd_vma got_index) 1771 { 1772 asection *sgot; 1773 bfd_vma gp; 1774 1775 score_elf_got_info (dynobj, &sgot); 1776 gp = _bfd_get_gp_value (output_bfd); 1777 1778 return sgot->output_section->vma + sgot->output_offset + got_index - gp; 1779 } 1780 1781 /* Follow indirect and warning hash entries so that each got entry 1782 points to the final symbol definition. P must point to a pointer 1783 to the hash table we're traversing. Since this traversal may 1784 modify the hash table, we set this pointer to NULL to indicate 1785 we've made a potentially-destructive change to the hash table, so 1786 the traversal must be restarted. */ 1787 static int 1788 score_elf_resolve_final_got_entry (void **entryp, void *p) 1789 { 1790 struct score_got_entry *entry = (struct score_got_entry *)*entryp; 1791 htab_t got_entries = *(htab_t *)p; 1792 1793 if (entry->abfd != NULL && entry->symndx == -1) 1794 { 1795 struct score_elf_link_hash_entry *h = entry->d.h; 1796 1797 while (h->root.root.type == bfd_link_hash_indirect 1798 || h->root.root.type == bfd_link_hash_warning) 1799 h = (struct score_elf_link_hash_entry *) h->root.root.u.i.link; 1800 1801 if (entry->d.h == h) 1802 return 1; 1803 1804 entry->d.h = h; 1805 1806 /* If we can't find this entry with the new bfd hash, re-insert 1807 it, and get the traversal restarted. */ 1808 if (! htab_find (got_entries, entry)) 1809 { 1810 htab_clear_slot (got_entries, entryp); 1811 entryp = htab_find_slot (got_entries, entry, INSERT); 1812 if (! *entryp) 1813 *entryp = entry; 1814 /* Abort the traversal, since the whole table may have 1815 moved, and leave it up to the parent to restart the 1816 process. */ 1817 *(htab_t *)p = NULL; 1818 return 0; 1819 } 1820 /* We might want to decrement the global_gotno count, but it's 1821 either too early or too late for that at this point. */ 1822 } 1823 1824 return 1; 1825 } 1826 1827 /* Turn indirect got entries in a got_entries table into their final locations. */ 1828 static void 1829 score_elf_resolve_final_got_entries (struct score_got_info *g) 1830 { 1831 htab_t got_entries; 1832 1833 do 1834 { 1835 got_entries = g->got_entries; 1836 1837 htab_traverse (got_entries, 1838 score_elf_resolve_final_got_entry, 1839 &got_entries); 1840 } 1841 while (got_entries == NULL); 1842 } 1843 1844 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. for -r */ 1845 static void 1846 score_elf_add_to_rel (bfd *abfd, 1847 bfd_byte *address, 1848 reloc_howto_type *howto, 1849 bfd_signed_vma increment) 1850 { 1851 bfd_signed_vma addend; 1852 bfd_vma contents; 1853 unsigned long offset; 1854 unsigned long r_type = howto->type; 1855 unsigned long hi16_addend, hi16_offset, hi16_value, uvalue; 1856 1857 contents = score_bfd_get_32 (abfd, address); 1858 /* Get the (signed) value from the instruction. */ 1859 addend = contents & howto->src_mask; 1860 if (addend & ((howto->src_mask + 1) >> 1)) 1861 { 1862 bfd_signed_vma mask; 1863 1864 mask = -1; 1865 mask &= ~howto->src_mask; 1866 addend |= mask; 1867 } 1868 /* Add in the increment, (which is a byte value). */ 1869 switch (r_type) 1870 { 1871 case R_SCORE_PC19: 1872 offset = 1873 (((contents & howto->src_mask) & 0x3ff0000) >> 6) | ((contents & howto->src_mask) & 0x3ff); 1874 offset += increment; 1875 contents = 1876 (contents & ~howto-> 1877 src_mask) | (((offset << 6) & howto->src_mask) & 0x3ff0000) | (offset & 0x3ff); 1878 score_bfd_put_32 (abfd, contents, address); 1879 break; 1880 case R_SCORE_HI16: 1881 break; 1882 case R_SCORE_LO16: 1883 hi16_addend = score_bfd_get_32 (abfd, address - 4); 1884 hi16_offset = ((((hi16_addend >> 16) & 0x3) << 15) | (hi16_addend & 0x7fff)) >> 1; 1885 offset = ((((contents >> 16) & 0x3) << 15) | (contents & 0x7fff)) >> 1; 1886 offset = (hi16_offset << 16) | (offset & 0xffff); 1887 uvalue = increment + offset; 1888 hi16_offset = (uvalue >> 16) << 1; 1889 hi16_value = (hi16_addend & (~(howto->dst_mask))) 1890 | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000); 1891 score_bfd_put_32 (abfd, hi16_value, address - 4); 1892 offset = (uvalue & 0xffff) << 1; 1893 contents = (contents & (~(howto->dst_mask))) | (offset & 0x7fff) | ((offset << 1) & 0x30000); 1894 score_bfd_put_32 (abfd, contents, address); 1895 break; 1896 case R_SCORE_24: 1897 offset = 1898 (((contents & howto->src_mask) >> 1) & 0x1ff8000) | ((contents & howto->src_mask) & 0x7fff); 1899 offset += increment; 1900 contents = 1901 (contents & ~howto-> 1902 src_mask) | (((offset << 1) & howto->src_mask) & 0x3ff0000) | (offset & 0x7fff); 1903 score_bfd_put_32 (abfd, contents, address); 1904 break; 1905 1906 case R_SCORE16_11: 1907 1908 contents = score_bfd_get_16 (abfd, address); 1909 offset = contents & howto->src_mask; 1910 offset += increment; 1911 contents = (contents & ~howto->src_mask) | (offset & howto->src_mask); 1912 score_bfd_put_16 (abfd, contents, address); 1913 1914 break; 1915 case R_SCORE16_PC8: 1916 1917 contents = score_bfd_get_16 (abfd, address); 1918 offset = (contents & howto->src_mask) + ((increment >> 1) & 0x1ff); 1919 contents = (contents & (~howto->src_mask)) | (offset & howto->src_mask); 1920 score_bfd_put_16 (abfd, contents, address); 1921 1922 break; 1923 1924 case R_SCORE_BCMP: 1925 contents = score_bfd_get_32 (abfd, address); 1926 offset = (contents & howto->src_mask); 1927 offset <<= howto->rightshift; 1928 offset += increment; 1929 offset >>= howto->rightshift; 1930 contents = (contents & (~howto->src_mask)) | (offset & howto->src_mask); 1931 score_bfd_put_32 (abfd, contents, address); 1932 break; 1933 1934 case R_SCORE_IMM30: 1935 contents = score_bfd_get_48 (abfd, address); 1936 offset = (contents & howto->src_mask); 1937 offset <<= howto->rightshift; 1938 offset += increment; 1939 offset >>= howto->rightshift; 1940 contents = (contents & (~howto->src_mask)) | (offset & howto->src_mask); 1941 score_bfd_put_48 (abfd, contents, address); 1942 break; 1943 1944 case R_SCORE_IMM32: 1945 contents = score_bfd_get_48 (abfd, address); 1946 offset = (contents & howto->src_mask); 1947 offset += increment; 1948 contents = (contents & (~howto->src_mask)) | (offset & howto->src_mask); 1949 score_bfd_put_48 (abfd, contents, address); 1950 break; 1951 1952 default: 1953 addend += increment; 1954 contents = (contents & ~howto->dst_mask) | (addend & howto->dst_mask); 1955 score_bfd_put_32 (abfd, contents, address); 1956 break; 1957 } 1958 } 1959 1960 /* Perform a relocation as part of a final link. */ 1961 static bfd_reloc_status_type 1962 score_elf_final_link_relocate (reloc_howto_type *howto, 1963 bfd *input_bfd, 1964 bfd *output_bfd, 1965 asection *input_section, 1966 bfd_byte *contents, 1967 Elf_Internal_Rela *rel, 1968 Elf_Internal_Rela *relocs, 1969 bfd_vma symbol, 1970 struct bfd_link_info *info, 1971 const char *sym_name ATTRIBUTE_UNUSED, 1972 int sym_flags ATTRIBUTE_UNUSED, 1973 struct score_elf_link_hash_entry *h, 1974 asection **local_sections, 1975 bfd_boolean gp_disp_p) 1976 { 1977 unsigned long r_type; 1978 unsigned long r_symndx; 1979 bfd_byte *hit_data = contents + rel->r_offset; 1980 bfd_vma addend; 1981 /* The final GP value to be used for the relocatable, executable, or 1982 shared object file being produced. */ 1983 bfd_vma gp = MINUS_ONE; 1984 /* The place (section offset or address) of the storage unit being relocated. */ 1985 bfd_vma rel_addr; 1986 /* The offset into the global offset table at which the address of the relocation entry 1987 symbol, adjusted by the addend, resides during execution. */ 1988 bfd_vma g = MINUS_ONE; 1989 /* TRUE if the symbol referred to by this relocation is a local symbol. */ 1990 bfd_boolean local_p; 1991 /* The eventual value we will relocate. */ 1992 bfd_vma value = symbol; 1993 unsigned long hi16_addend, hi16_offset, hi16_value, uvalue, offset, abs_value = 0; 1994 1995 1996 if (elf_gp (output_bfd) == 0) 1997 { 1998 struct bfd_link_hash_entry *bh; 1999 asection *o; 2000 2001 bh = bfd_link_hash_lookup (info->hash, "_gp", 0, 0, 1); 2002 if (bh != NULL && bh->type == bfd_link_hash_defined) 2003 elf_gp (output_bfd) = (bh->u.def.value 2004 + bh->u.def.section->output_section->vma 2005 + bh->u.def.section->output_offset); 2006 else if (bfd_link_relocatable (info)) 2007 { 2008 bfd_vma lo = -1; 2009 2010 /* Find the GP-relative section with the lowest offset. */ 2011 for (o = output_bfd->sections; o != NULL; o = o->next) 2012 if (o->vma < lo) 2013 lo = o->vma; 2014 /* And calculate GP relative to that. */ 2015 elf_gp (output_bfd) = lo + ELF_SCORE_GP_OFFSET (input_bfd); 2016 } 2017 else 2018 { 2019 /* If the relocate_section function needs to do a reloc 2020 involving the GP value, it should make a reloc_dangerous 2021 callback to warn that GP is not defined. */ 2022 } 2023 } 2024 2025 /* Parse the relocation. */ 2026 r_symndx = ELF32_R_SYM (rel->r_info); 2027 r_type = ELF32_R_TYPE (rel->r_info); 2028 rel_addr = (input_section->output_section->vma + input_section->output_offset + rel->r_offset); 2029 local_p = score_elf_local_relocation_p (input_bfd, rel, local_sections, TRUE); 2030 2031 if (r_type == R_SCORE_GOT15) 2032 { 2033 const Elf_Internal_Rela *relend; 2034 const Elf_Internal_Rela *lo16_rel; 2035 const struct elf_backend_data *bed; 2036 bfd_vma lo_value = 0; 2037 2038 bed = get_elf_backend_data (output_bfd); 2039 relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel; 2040 lo16_rel = score_elf_next_relocation (input_bfd, R_SCORE_GOT_LO16, rel, relend); 2041 if ((local_p) && (lo16_rel != NULL)) 2042 { 2043 bfd_vma tmp = 0; 2044 tmp = score_bfd_get_32 (input_bfd, contents + lo16_rel->r_offset); 2045 lo_value = (((tmp >> 16) & 0x3) << 14) | ((tmp & 0x7fff) >> 1); 2046 } 2047 addend = lo_value; 2048 } 2049 /* For score3 R_SCORE_ABS32. */ 2050 else if (r_type == R_SCORE_ABS32 || r_type == R_SCORE_REL32) 2051 { 2052 addend = (bfd_get_32 (input_bfd, hit_data) >> howto->bitpos) & howto->src_mask; 2053 } 2054 else 2055 { 2056 addend = (score_bfd_get_32 (input_bfd, hit_data) >> howto->bitpos) & howto->src_mask; 2057 } 2058 2059 /* If we haven't already determined the GOT offset, or the GP value, 2060 and we're going to need it, get it now. */ 2061 switch (r_type) 2062 { 2063 case R_SCORE_CALL15: 2064 case R_SCORE_GOT15: 2065 if (!local_p) 2066 { 2067 g = score_elf_global_got_index (elf_hash_table (info)->dynobj, 2068 (struct elf_link_hash_entry *) h); 2069 if ((! elf_hash_table (info)->dynamic_sections_created 2070 || (bfd_link_pic (info) 2071 && (info->symbolic || h->root.dynindx == -1) 2072 && h->root.def_regular))) 2073 { 2074 /* This is a static link or a -Bsymbolic link. The 2075 symbol is defined locally, or was forced to be local. 2076 We must initialize this entry in the GOT. */ 2077 bfd *tmpbfd = elf_hash_table (info)->dynobj; 2078 asection *sgot = score_elf_got_section (tmpbfd, FALSE); 2079 score_bfd_put_32 (tmpbfd, value, sgot->contents + g); 2080 } 2081 } 2082 else if (r_type == R_SCORE_GOT15 || r_type == R_SCORE_CALL15) 2083 { 2084 /* There's no need to create a local GOT entry here; the 2085 calculation for a local GOT15 entry does not involve G. */ 2086 ; 2087 } 2088 else 2089 { 2090 g = score_elf_local_got_index (output_bfd, input_bfd, info, 2091 symbol + addend, r_symndx, h, r_type); 2092 if (g == MINUS_ONE) 2093 return bfd_reloc_outofrange; 2094 } 2095 2096 /* Convert GOT indices to actual offsets. */ 2097 g = score_elf_got_offset_from_index (elf_hash_table (info)->dynobj, 2098 output_bfd, input_bfd, g); 2099 break; 2100 2101 case R_SCORE_HI16: 2102 case R_SCORE_LO16: 2103 case R_SCORE_GPREL32: 2104 gp = _bfd_get_gp_value (output_bfd); 2105 break; 2106 2107 case R_SCORE_GP15: 2108 gp = _bfd_get_gp_value (output_bfd); 2109 2110 default: 2111 break; 2112 } 2113 2114 switch (r_type) 2115 { 2116 case R_SCORE_NONE: 2117 return bfd_reloc_ok; 2118 2119 case R_SCORE_ABS32: 2120 case R_SCORE_REL32: 2121 if ((bfd_link_pic (info) 2122 || (elf_hash_table (info)->dynamic_sections_created 2123 && h != NULL 2124 && h->root.def_dynamic 2125 && !h->root.def_regular)) 2126 && r_symndx != STN_UNDEF 2127 && (input_section->flags & SEC_ALLOC) != 0) 2128 { 2129 /* If we're creating a shared library, or this relocation is against a symbol 2130 in a shared library, then we can't know where the symbol will end up. 2131 So, we create a relocation record in the output, and leave the job up 2132 to the dynamic linker. */ 2133 value = addend; 2134 if (!score_elf_create_dynamic_relocation (output_bfd, info, rel, h, 2135 symbol, &value, 2136 input_section)) 2137 return bfd_reloc_undefined; 2138 } 2139 else if (r_symndx == STN_UNDEF) 2140 /* r_symndx will be STN_UNDEF (zero) only for relocs against symbols 2141 from removed linkonce sections, or sections discarded by 2142 a linker script. */ 2143 value = 0; 2144 else 2145 { 2146 if (r_type != R_SCORE_REL32) 2147 value = symbol + addend; 2148 else 2149 value = addend; 2150 } 2151 value &= howto->dst_mask; 2152 bfd_put_32 (input_bfd, value, hit_data); 2153 return bfd_reloc_ok; 2154 2155 case R_SCORE_ABS16: 2156 value += addend; 2157 if ((long)value > 0x7fff || (long)value < -0x8000) 2158 return bfd_reloc_overflow; 2159 score_bfd_put_16 (input_bfd, value, hit_data); 2160 return bfd_reloc_ok; 2161 2162 case R_SCORE_24: 2163 addend = score_bfd_get_32 (input_bfd, hit_data); 2164 offset = (((addend & howto->src_mask) >> 1) & 0x1ff8000) | ((addend & howto->src_mask) & 0x7fff); 2165 if ((offset & 0x1000000) != 0) 2166 offset |= 0xfe000000; 2167 value += offset; 2168 abs_value = value - rel_addr; 2169 if ((abs_value & 0xfe000000) != 0) 2170 return bfd_reloc_overflow; 2171 addend = (addend & ~howto->src_mask) 2172 | (((value << 1) & howto->src_mask) & 0x3ff0000) | (value & 0x7fff); 2173 score_bfd_put_32 (input_bfd, addend, hit_data); 2174 return bfd_reloc_ok; 2175 2176 /* signed imm32. */ 2177 case R_SCORE_IMM30: 2178 { 2179 int not_word_align_p = 0; 2180 bfd_vma imm_offset = 0; 2181 addend = score_bfd_get_48 (input_bfd, hit_data); 2182 imm_offset = ((addend >> 7) & 0xff) 2183 | (((addend >> 16) & 0x7fff) << 8) 2184 | (((addend >> 32) & 0x7f) << 23); 2185 imm_offset <<= howto->rightshift; 2186 value += imm_offset; 2187 value &= 0xffffffff; 2188 2189 /* Check lw48/sw48 rd, value/label word align. */ 2190 if ((value & 0x3) != 0) 2191 not_word_align_p = 1; 2192 2193 value >>= howto->rightshift; 2194 addend = (addend & ~howto->src_mask) 2195 | (((value & 0xff) >> 0) << 7) 2196 | (((value & 0x7fff00) >> 8) << 16) 2197 | (((value & 0x3f800000) >> 23) << 32); 2198 score_bfd_put_48 (input_bfd, addend, hit_data); 2199 if (not_word_align_p) 2200 return bfd_reloc_other; 2201 else 2202 return bfd_reloc_ok; 2203 } 2204 2205 case R_SCORE_IMM32: 2206 { 2207 bfd_vma imm_offset = 0; 2208 addend = score_bfd_get_48 (input_bfd, hit_data); 2209 imm_offset = ((addend >> 5) & 0x3ff) 2210 | (((addend >> 16) & 0x7fff) << 10) 2211 | (((addend >> 32) & 0x7f) << 25); 2212 value += imm_offset; 2213 value &= 0xffffffff; 2214 addend = (addend & ~howto->src_mask) 2215 | ((value & 0x3ff) << 5) 2216 | (((value >> 10) & 0x7fff) << 16) 2217 | (((value >> 25) & 0x7f) << 32); 2218 score_bfd_put_48 (input_bfd, addend, hit_data); 2219 return bfd_reloc_ok; 2220 } 2221 2222 case R_SCORE_PC19: 2223 addend = score_bfd_get_32 (input_bfd, hit_data); 2224 offset = (((addend & howto->src_mask) & 0x3ff0000) >> 6) | ((addend & howto->src_mask) & 0x3ff); 2225 if ((offset & 0x80000) != 0) 2226 offset |= 0xfff00000; 2227 abs_value = value = value - rel_addr + offset; 2228 /* exceed 20 bit : overflow. */ 2229 if ((abs_value & 0x80000000) == 0x80000000) 2230 abs_value = 0xffffffff - value + 1; 2231 if ((abs_value & 0xfff80000) != 0) 2232 return bfd_reloc_overflow; 2233 addend = (addend & ~howto->src_mask) 2234 | (((value << 6) & howto->src_mask) & 0x3ff0000) | (value & 0x3ff); 2235 score_bfd_put_32 (input_bfd, addend, hit_data); 2236 return bfd_reloc_ok; 2237 2238 case R_SCORE16_11: 2239 addend = score_bfd_get_16 (input_bfd, hit_data); 2240 offset = addend & howto->src_mask; 2241 if ((offset & 0x800) != 0) /* Offset is negative. */ 2242 offset |= 0xfffff000; 2243 value += offset; 2244 abs_value = value - rel_addr; 2245 if ((abs_value & 0xfffff000) != 0) 2246 return bfd_reloc_overflow; 2247 addend = (addend & ~howto->src_mask) | (value & howto->src_mask); 2248 score_bfd_put_16 (input_bfd, addend, hit_data); 2249 return bfd_reloc_ok; 2250 2251 case R_SCORE16_PC8: 2252 addend = score_bfd_get_16 (input_bfd, hit_data); 2253 offset = (addend & howto->src_mask) << 1; 2254 if ((offset & 0x200) != 0) /* Offset is negative. */ 2255 offset |= 0xfffffe00; 2256 abs_value = value = value - rel_addr + offset; 2257 /* Sign bit + exceed 9 bit. */ 2258 if (((value & 0xfffffe00) != 0) && ((value & 0xfffffe00) != 0xfffffe00)) 2259 return bfd_reloc_overflow; 2260 value >>= 1; 2261 addend = (addend & ~howto->src_mask) | (value & howto->src_mask); 2262 score_bfd_put_16 (input_bfd, addend, hit_data); 2263 return bfd_reloc_ok; 2264 2265 case R_SCORE_BCMP: 2266 addend = score_bfd_get_32 (input_bfd, hit_data); 2267 offset = (addend & howto->src_mask) << howto->rightshift; 2268 if ((offset & 0x200) != 0) /* Offset is negative. */ 2269 offset |= 0xfffffe00; 2270 value = value - rel_addr + offset; 2271 /* Sign bit + exceed 9 bit. */ 2272 if (((value & 0xfffffe00) != 0) && ((value & 0xfffffe00) != 0xfffffe00)) 2273 return bfd_reloc_overflow; 2274 value >>= howto->rightshift; 2275 addend = (addend & ~howto->src_mask) 2276 | (value & 0x1) 2277 | (((value >> 1) & 0x7) << 7) 2278 | (((value >> 4) & 0x1f) << 21); 2279 score_bfd_put_32 (input_bfd, addend, hit_data); 2280 return bfd_reloc_ok; 2281 2282 case R_SCORE_HI16: 2283 return bfd_reloc_ok; 2284 2285 case R_SCORE_LO16: 2286 hi16_addend = score_bfd_get_32 (input_bfd, hit_data - 4); 2287 hi16_offset = ((((hi16_addend >> 16) & 0x3) << 15) | (hi16_addend & 0x7fff)) >> 1; 2288 addend = score_bfd_get_32 (input_bfd, hit_data); 2289 offset = ((((addend >> 16) & 0x3) << 15) | (addend & 0x7fff)) >> 1; 2290 offset = (hi16_offset << 16) | (offset & 0xffff); 2291 2292 if (!gp_disp_p) 2293 uvalue = value + offset; 2294 else 2295 uvalue = offset + gp - rel_addr + 4; 2296 2297 hi16_offset = (uvalue >> 16) << 1; 2298 hi16_value = (hi16_addend & (~(howto->dst_mask))) 2299 | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000); 2300 score_bfd_put_32 (input_bfd, hi16_value, hit_data - 4); 2301 offset = (uvalue & 0xffff) << 1; 2302 value = (addend & (~(howto->dst_mask))) | (offset & 0x7fff) | ((offset << 1) & 0x30000); 2303 score_bfd_put_32 (input_bfd, value, hit_data); 2304 return bfd_reloc_ok; 2305 2306 case R_SCORE_GP15: 2307 addend = score_bfd_get_32 (input_bfd, hit_data); 2308 offset = addend & 0x7fff; 2309 if ((offset & 0x4000) == 0x4000) 2310 offset |= 0xffffc000; 2311 value = value + offset - gp; 2312 if (((value & 0xffffc000) != 0) && ((value & 0xffffc000) != 0xffffc000)) 2313 return bfd_reloc_overflow; 2314 value = (addend & ~howto->src_mask) | (value & howto->src_mask); 2315 score_bfd_put_32 (input_bfd, value, hit_data); 2316 return bfd_reloc_ok; 2317 2318 case R_SCORE_GOT15: 2319 case R_SCORE_CALL15: 2320 if (local_p) 2321 { 2322 bfd_boolean forced; 2323 2324 /* The special case is when the symbol is forced to be local. We need the 2325 full address in the GOT since no R_SCORE_GOT_LO16 relocation follows. */ 2326 forced = ! score_elf_local_relocation_p (input_bfd, rel, 2327 local_sections, FALSE); 2328 value = score_elf_got16_entry (output_bfd, input_bfd, info, 2329 symbol + addend, forced); 2330 if (value == MINUS_ONE) 2331 return bfd_reloc_outofrange; 2332 value = score_elf_got_offset_from_index (elf_hash_table (info)->dynobj, 2333 output_bfd, input_bfd, value); 2334 } 2335 else 2336 { 2337 value = g; 2338 } 2339 2340 if ((long) value > 0x3fff || (long) value < -0x4000) 2341 return bfd_reloc_overflow; 2342 2343 addend = score_bfd_get_32 (input_bfd, hit_data); 2344 value = (addend & ~howto->dst_mask) | (value & howto->dst_mask); 2345 score_bfd_put_32 (input_bfd, value, hit_data); 2346 return bfd_reloc_ok; 2347 2348 case R_SCORE_GPREL32: 2349 value = (addend + symbol - gp); 2350 value &= howto->dst_mask; 2351 score_bfd_put_32 (input_bfd, value, hit_data); 2352 return bfd_reloc_ok; 2353 2354 case R_SCORE_GOT_LO16: 2355 addend = score_bfd_get_32 (input_bfd, hit_data); 2356 value = (((addend >> 16) & 0x3) << 14) | ((addend & 0x7fff) >> 1); 2357 value += symbol; 2358 value = (addend & (~(howto->dst_mask))) | ((value & 0x3fff) << 1) 2359 | (((value >> 14) & 0x3) << 16); 2360 2361 score_bfd_put_32 (input_bfd, value, hit_data); 2362 return bfd_reloc_ok; 2363 2364 case R_SCORE_DUMMY_HI16: 2365 return bfd_reloc_ok; 2366 2367 case R_SCORE_GNU_VTINHERIT: 2368 case R_SCORE_GNU_VTENTRY: 2369 /* We don't do anything with these at present. */ 2370 return bfd_reloc_continue; 2371 2372 default: 2373 return bfd_reloc_notsupported; 2374 } 2375 } 2376 2377 /* Score backend functions. */ 2378 static void 2379 s3_bfd_score_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, 2380 arelent *bfd_reloc, 2381 Elf_Internal_Rela *elf_reloc) 2382 { 2383 unsigned int r_type; 2384 2385 r_type = ELF32_R_TYPE (elf_reloc->r_info); 2386 if (r_type >= ARRAY_SIZE (elf32_score_howto_table)) 2387 bfd_reloc->howto = NULL; 2388 else 2389 bfd_reloc->howto = &elf32_score_howto_table[r_type]; 2390 } 2391 2392 /* Relocate an score ELF section. */ 2393 static bfd_boolean 2394 s3_bfd_score_elf_relocate_section (bfd *output_bfd, 2395 struct bfd_link_info *info, 2396 bfd *input_bfd, 2397 asection *input_section, 2398 bfd_byte *contents, 2399 Elf_Internal_Rela *relocs, 2400 Elf_Internal_Sym *local_syms, 2401 asection **local_sections) 2402 { 2403 Elf_Internal_Shdr *symtab_hdr; 2404 Elf_Internal_Rela *rel; 2405 Elf_Internal_Rela *relend; 2406 const char *name; 2407 unsigned long offset; 2408 unsigned long hi16_addend, hi16_offset, hi16_value, uvalue; 2409 size_t extsymoff; 2410 bfd_boolean gp_disp_p = FALSE; 2411 2412 /* Sort dynsym. */ 2413 if (elf_hash_table (info)->dynamic_sections_created) 2414 { 2415 bfd_size_type dynsecsymcount = 0; 2416 if (bfd_link_pic (info)) 2417 { 2418 asection * p; 2419 const struct elf_backend_data *bed = get_elf_backend_data (output_bfd); 2420 2421 for (p = output_bfd->sections; p ; p = p->next) 2422 if ((p->flags & SEC_EXCLUDE) == 0 2423 && (p->flags & SEC_ALLOC) != 0 2424 && !(*bed->elf_backend_omit_section_dynsym) (output_bfd, info, p)) 2425 ++ dynsecsymcount; 2426 } 2427 2428 if (!score_elf_sort_hash_table (info, dynsecsymcount + 1)) 2429 return FALSE; 2430 } 2431 2432 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 2433 extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info; 2434 rel = relocs; 2435 relend = relocs + input_section->reloc_count; 2436 for (; rel < relend; rel++) 2437 { 2438 int r_type; 2439 reloc_howto_type *howto; 2440 unsigned long r_symndx; 2441 Elf_Internal_Sym *sym; 2442 asection *sec; 2443 struct score_elf_link_hash_entry *h; 2444 bfd_vma relocation = 0; 2445 bfd_reloc_status_type r; 2446 arelent bfd_reloc; 2447 2448 r_symndx = ELF32_R_SYM (rel->r_info); 2449 r_type = ELF32_R_TYPE (rel->r_info); 2450 2451 s3_bfd_score_info_to_howto (input_bfd, &bfd_reloc, (Elf_Internal_Rela *) rel); 2452 howto = bfd_reloc.howto; 2453 2454 h = NULL; 2455 sym = NULL; 2456 sec = NULL; 2457 2458 if (r_symndx < extsymoff) 2459 { 2460 sym = local_syms + r_symndx; 2461 sec = local_sections[r_symndx]; 2462 relocation = (sec->output_section->vma 2463 + sec->output_offset 2464 + sym->st_value); 2465 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); 2466 2467 if (!bfd_link_relocatable (info) 2468 && (sec->flags & SEC_MERGE) 2469 && ELF_ST_TYPE (sym->st_info) == STT_SECTION) 2470 { 2471 asection *msec; 2472 bfd_vma addend, value; 2473 2474 switch (r_type) 2475 { 2476 case R_SCORE_HI16: 2477 break; 2478 case R_SCORE_LO16: 2479 hi16_addend = score_bfd_get_32 (input_bfd, contents + rel->r_offset - 4); 2480 hi16_offset = ((((hi16_addend >> 16) & 0x3) << 15) | (hi16_addend & 0x7fff)) >> 1; 2481 value = score_bfd_get_32 (input_bfd, contents + rel->r_offset); 2482 offset = ((((value >> 16) & 0x3) << 15) | (value & 0x7fff)) >> 1; 2483 addend = (hi16_offset << 16) | (offset & 0xffff); 2484 msec = sec; 2485 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend); 2486 addend -= relocation; 2487 addend += msec->output_section->vma + msec->output_offset; 2488 uvalue = addend; 2489 hi16_offset = (uvalue >> 16) << 1; 2490 hi16_value = (hi16_addend & (~(howto->dst_mask))) 2491 | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000); 2492 score_bfd_put_32 (input_bfd, hi16_value, contents + rel->r_offset - 4); 2493 offset = (uvalue & 0xffff) << 1; 2494 value = (value & (~(howto->dst_mask))) 2495 | (offset & 0x7fff) | ((offset << 1) & 0x30000); 2496 score_bfd_put_32 (input_bfd, value, contents + rel->r_offset); 2497 break; 2498 2499 case R_SCORE_IMM32: 2500 { 2501 value = score_bfd_get_48 (input_bfd, contents + rel->r_offset); 2502 addend = ((value >> 5) & 0x3ff) 2503 | (((value >> 16) & 0x7fff) << 10) 2504 | (((value >> 32) & 0x7f) << 25); 2505 msec = sec; 2506 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend); 2507 addend -= relocation; 2508 addend += msec->output_section->vma + msec->output_offset; 2509 addend &= 0xffffffff; 2510 value = (value & ~howto->src_mask) 2511 | ((addend & 0x3ff) << 5) 2512 | (((addend >> 10) & 0x7fff) << 16) 2513 | (((addend >> 25) & 0x7f) << 32); 2514 score_bfd_put_48 (input_bfd, value, contents + rel->r_offset); 2515 break; 2516 } 2517 2518 case R_SCORE_IMM30: 2519 { 2520 int not_word_align_p = 0; 2521 value = score_bfd_get_48 (input_bfd, contents + rel->r_offset); 2522 addend = ((value >> 7) & 0xff) 2523 | (((value >> 16) & 0x7fff) << 8) 2524 | (((value >> 32) & 0x7f) << 23); 2525 addend <<= howto->rightshift; 2526 msec = sec; 2527 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend); 2528 addend -= relocation; 2529 addend += msec->output_section->vma + msec->output_offset; 2530 addend &= 0xffffffff; 2531 2532 /* Check lw48/sw48 rd, value/label word align. */ 2533 if ((addend & 0x3) != 0) 2534 not_word_align_p = 1; 2535 2536 addend >>= howto->rightshift; 2537 value = (value & ~howto->src_mask) 2538 | (((addend & 0xff) >> 0) << 7) 2539 | (((addend & 0x7fff00) >> 8) << 16) 2540 | (((addend & 0x3f800000) >> 23) << 32); 2541 score_bfd_put_48 (input_bfd, value, contents + rel->r_offset); 2542 2543 if (not_word_align_p) 2544 return bfd_reloc_other; 2545 else 2546 break; 2547 } 2548 2549 case R_SCORE_GOT_LO16: 2550 value = score_bfd_get_32 (input_bfd, contents + rel->r_offset); 2551 addend = (((value >> 16) & 0x3) << 14) | ((value & 0x7fff) >> 1); 2552 msec = sec; 2553 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) - relocation; 2554 addend += msec->output_section->vma + msec->output_offset; 2555 value = (value & (~(howto->dst_mask))) | ((addend & 0x3fff) << 1) 2556 | (((addend >> 14) & 0x3) << 16); 2557 2558 score_bfd_put_32 (input_bfd, value, contents + rel->r_offset); 2559 break; 2560 2561 case R_SCORE_ABS32: 2562 case R_SCORE_REL32: 2563 value = bfd_get_32 (input_bfd, contents + rel->r_offset); 2564 /* Get the (signed) value from the instruction. */ 2565 addend = value & howto->src_mask; 2566 if (addend & ((howto->src_mask + 1) >> 1)) 2567 { 2568 bfd_signed_vma mask; 2569 2570 mask = -1; 2571 mask &= ~howto->src_mask; 2572 addend |= mask; 2573 } 2574 msec = sec; 2575 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) - relocation; 2576 addend += msec->output_section->vma + msec->output_offset; 2577 value = (value & ~howto->dst_mask) | (addend & howto->dst_mask); 2578 bfd_put_32 (input_bfd, value, contents + rel->r_offset); 2579 break; 2580 2581 default: 2582 value = score_bfd_get_32 (input_bfd, contents + rel->r_offset); 2583 /* Get the (signed) value from the instruction. */ 2584 addend = value & howto->src_mask; 2585 if (addend & ((howto->src_mask + 1) >> 1)) 2586 { 2587 bfd_signed_vma mask; 2588 2589 mask = -1; 2590 mask &= ~howto->src_mask; 2591 addend |= mask; 2592 } 2593 msec = sec; 2594 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) - relocation; 2595 addend += msec->output_section->vma + msec->output_offset; 2596 value = (value & ~howto->dst_mask) | (addend & howto->dst_mask); 2597 score_bfd_put_32 (input_bfd, value, contents + rel->r_offset); 2598 break; 2599 } 2600 } 2601 } 2602 else 2603 { 2604 /* For global symbols we look up the symbol in the hash-table. */ 2605 h = ((struct score_elf_link_hash_entry *) 2606 elf_sym_hashes (input_bfd) [r_symndx - extsymoff]); 2607 2608 if (info->wrap_hash != NULL 2609 && (input_section->flags & SEC_DEBUGGING) != 0) 2610 h = ((struct score_elf_link_hash_entry *) 2611 unwrap_hash_lookup (info, input_bfd, &h->root.root)); 2612 2613 /* Find the real hash-table entry for this symbol. */ 2614 while (h->root.root.type == bfd_link_hash_indirect 2615 || h->root.root.type == bfd_link_hash_warning) 2616 h = (struct score_elf_link_hash_entry *) h->root.root.u.i.link; 2617 2618 /* Record the name of this symbol, for our caller. */ 2619 name = h->root.root.root.string; 2620 2621 /* See if this is the special GP_DISP_LABEL symbol. Note that such a 2622 symbol must always be a global symbol. */ 2623 if (strcmp (name, GP_DISP_LABEL) == 0) 2624 { 2625 /* Relocations against GP_DISP_LABEL are permitted only with 2626 R_SCORE_HI16 and R_SCORE_LO16 relocations. */ 2627 if (r_type != R_SCORE_HI16 && r_type != R_SCORE_LO16) 2628 return bfd_reloc_notsupported; 2629 2630 gp_disp_p = TRUE; 2631 } 2632 2633 /* If this symbol is defined, calculate its address. Note that 2634 GP_DISP_LABEL is a magic symbol, always implicitly defined by the 2635 linker, so it's inappropriate to check to see whether or not 2636 its defined. */ 2637 else if ((h->root.root.type == bfd_link_hash_defined 2638 || h->root.root.type == bfd_link_hash_defweak) 2639 && h->root.root.u.def.section) 2640 { 2641 sec = h->root.root.u.def.section; 2642 if (sec->output_section) 2643 relocation = (h->root.root.u.def.value 2644 + sec->output_section->vma 2645 + sec->output_offset); 2646 else 2647 { 2648 relocation = h->root.root.u.def.value; 2649 } 2650 } 2651 else if (h->root.root.type == bfd_link_hash_undefweak) 2652 /* We allow relocations against undefined weak symbols, giving 2653 it the value zero, so that you can undefined weak functions 2654 and check to see if they exist by looking at their addresses. */ 2655 relocation = 0; 2656 else if (info->unresolved_syms_in_objects == RM_IGNORE 2657 && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) 2658 relocation = 0; 2659 else if (strcmp (name, "_DYNAMIC_LINK") == 0) 2660 { 2661 /* If this is a dynamic link, we should have created a _DYNAMIC_LINK symbol 2662 in s3_bfd_score_elf_create_dynamic_sections. Otherwise, we should define 2663 the symbol with a value of 0. */ 2664 BFD_ASSERT (! bfd_link_pic (info)); 2665 BFD_ASSERT (bfd_get_section_by_name (output_bfd, ".dynamic") == NULL); 2666 relocation = 0; 2667 } 2668 else if (!bfd_link_relocatable (info)) 2669 { 2670 (*info->callbacks->undefined_symbol) 2671 (info, h->root.root.root.string, input_bfd, 2672 input_section, rel->r_offset, 2673 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR) 2674 || ELF_ST_VISIBILITY (h->root.other)); 2675 relocation = 0; 2676 } 2677 } 2678 2679 if (sec != NULL && discarded_section (sec)) 2680 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 2681 rel, 1, relend, howto, 0, contents); 2682 2683 if (bfd_link_relocatable (info)) 2684 { 2685 /* This is a relocatable link. We don't have to change 2686 anything, unless the reloc is against a section symbol, 2687 in which case we have to adjust according to where the 2688 section symbol winds up in the output section. */ 2689 if (r_symndx < symtab_hdr->sh_info) 2690 { 2691 sym = local_syms + r_symndx; 2692 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) 2693 { 2694 sec = local_sections[r_symndx]; 2695 score_elf_add_to_rel (input_bfd, contents + rel->r_offset, 2696 howto, (bfd_signed_vma) (sec->output_offset + sym->st_value)); 2697 } 2698 } 2699 continue; 2700 } 2701 2702 /* This is a final link. */ 2703 r = score_elf_final_link_relocate (howto, input_bfd, output_bfd, 2704 input_section, contents, rel, relocs, 2705 relocation, info, name, 2706 (h ? ELF_ST_TYPE ((unsigned int)h->root.root.type) : 2707 ELF_ST_TYPE ((unsigned int)sym->st_info)), h, local_sections, 2708 gp_disp_p); 2709 2710 if (r != bfd_reloc_ok) 2711 { 2712 const char *msg = (const char *)0; 2713 2714 switch (r) 2715 { 2716 case bfd_reloc_overflow: 2717 /* If the overflowing reloc was to an undefined symbol, 2718 we have already printed one error message and there 2719 is no point complaining again. */ 2720 if (!h || h->root.root.type != bfd_link_hash_undefined) 2721 (*info->callbacks->reloc_overflow) 2722 (info, NULL, name, howto->name, (bfd_vma) 0, 2723 input_bfd, input_section, rel->r_offset); 2724 break; 2725 case bfd_reloc_undefined: 2726 (*info->callbacks->undefined_symbol) 2727 (info, name, input_bfd, input_section, rel->r_offset, TRUE); 2728 break; 2729 2730 case bfd_reloc_outofrange: 2731 msg = _("internal error: out of range error"); 2732 goto common_error; 2733 2734 case bfd_reloc_notsupported: 2735 msg = _("internal error: unsupported relocation error"); 2736 goto common_error; 2737 2738 case bfd_reloc_dangerous: 2739 msg = _("internal error: dangerous error"); 2740 goto common_error; 2741 2742 /* Use bfd_reloc_other to check lw48, sw48 word align. */ 2743 case bfd_reloc_other: 2744 msg = _("address not word align"); 2745 goto common_error; 2746 2747 default: 2748 msg = _("internal error: unknown error"); 2749 /* fall through */ 2750 2751 common_error: 2752 (*info->callbacks->warning) (info, msg, name, input_bfd, 2753 input_section, rel->r_offset); 2754 break; 2755 } 2756 } 2757 } 2758 2759 return TRUE; 2760 } 2761 2762 /* Look through the relocs for a section during the first phase, and 2763 allocate space in the global offset table. */ 2764 static bfd_boolean 2765 s3_bfd_score_elf_check_relocs (bfd *abfd, 2766 struct bfd_link_info *info, 2767 asection *sec, 2768 const Elf_Internal_Rela *relocs) 2769 { 2770 const char *name; 2771 bfd *dynobj; 2772 Elf_Internal_Shdr *symtab_hdr; 2773 struct elf_link_hash_entry **sym_hashes; 2774 struct score_got_info *g; 2775 size_t extsymoff; 2776 const Elf_Internal_Rela *rel; 2777 const Elf_Internal_Rela *rel_end; 2778 asection *sgot; 2779 asection *sreloc; 2780 const struct elf_backend_data *bed; 2781 2782 if (bfd_link_relocatable (info)) 2783 return TRUE; 2784 2785 dynobj = elf_hash_table (info)->dynobj; 2786 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 2787 sym_hashes = elf_sym_hashes (abfd); 2788 extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; 2789 2790 name = bfd_get_section_name (abfd, sec); 2791 2792 if (dynobj == NULL) 2793 { 2794 sgot = NULL; 2795 g = NULL; 2796 } 2797 else 2798 { 2799 sgot = score_elf_got_section (dynobj, FALSE); 2800 if (sgot == NULL) 2801 g = NULL; 2802 else 2803 { 2804 BFD_ASSERT (score_elf_section_data (sgot) != NULL); 2805 g = score_elf_section_data (sgot)->u.got_info; 2806 BFD_ASSERT (g != NULL); 2807 } 2808 } 2809 2810 sreloc = NULL; 2811 bed = get_elf_backend_data (abfd); 2812 rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel; 2813 for (rel = relocs; rel < rel_end; ++rel) 2814 { 2815 unsigned long r_symndx; 2816 unsigned int r_type; 2817 struct elf_link_hash_entry *h; 2818 2819 r_symndx = ELF32_R_SYM (rel->r_info); 2820 r_type = ELF32_R_TYPE (rel->r_info); 2821 2822 if (r_symndx < extsymoff) 2823 { 2824 h = NULL; 2825 } 2826 else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr)) 2827 { 2828 (*_bfd_error_handler) (_("%s: Malformed reloc detected for section %s"), abfd, name); 2829 bfd_set_error (bfd_error_bad_value); 2830 return FALSE; 2831 } 2832 else 2833 { 2834 h = sym_hashes[r_symndx - extsymoff]; 2835 2836 /* This may be an indirect symbol created because of a version. */ 2837 if (h != NULL) 2838 { 2839 while (h->root.type == bfd_link_hash_indirect) 2840 h = (struct elf_link_hash_entry *)h->root.u.i.link; 2841 2842 /* PR15323, ref flags aren't set for references in the 2843 same object. */ 2844 h->root.non_ir_ref = 1; 2845 } 2846 } 2847 2848 /* Some relocs require a global offset table. */ 2849 if (dynobj == NULL || sgot == NULL) 2850 { 2851 switch (r_type) 2852 { 2853 case R_SCORE_GOT15: 2854 case R_SCORE_CALL15: 2855 if (dynobj == NULL) 2856 elf_hash_table (info)->dynobj = dynobj = abfd; 2857 if (!score_elf_create_got_section (dynobj, info, FALSE)) 2858 return FALSE; 2859 g = score_elf_got_info (dynobj, &sgot); 2860 break; 2861 case R_SCORE_ABS32: 2862 case R_SCORE_REL32: 2863 if (dynobj == NULL 2864 && (bfd_link_pic (info) || h != NULL) 2865 && (sec->flags & SEC_ALLOC) != 0) 2866 elf_hash_table (info)->dynobj = dynobj = abfd; 2867 break; 2868 default: 2869 break; 2870 } 2871 } 2872 2873 if (!h && (r_type == R_SCORE_GOT_LO16)) 2874 { 2875 if (! score_elf_record_local_got_symbol (abfd, r_symndx, rel->r_addend, g)) 2876 return FALSE; 2877 } 2878 2879 switch (r_type) 2880 { 2881 case R_SCORE_CALL15: 2882 if (h == NULL) 2883 { 2884 (*_bfd_error_handler) 2885 (_("%B: CALL15 reloc at 0x%lx not against global symbol"), 2886 abfd, (unsigned long) rel->r_offset); 2887 bfd_set_error (bfd_error_bad_value); 2888 return FALSE; 2889 } 2890 else 2891 { 2892 /* This symbol requires a global offset table entry. */ 2893 if (! score_elf_record_global_got_symbol (h, abfd, info, g)) 2894 return FALSE; 2895 2896 /* We need a stub, not a plt entry for the undefined function. But we record 2897 it as if it needs plt. See _bfd_elf_adjust_dynamic_symbol. */ 2898 h->needs_plt = 1; 2899 h->type = STT_FUNC; 2900 } 2901 break; 2902 case R_SCORE_GOT15: 2903 if (h && ! score_elf_record_global_got_symbol (h, abfd, info, g)) 2904 return FALSE; 2905 break; 2906 case R_SCORE_ABS32: 2907 case R_SCORE_REL32: 2908 if ((bfd_link_pic (info) || h != NULL) 2909 && (sec->flags & SEC_ALLOC) != 0) 2910 { 2911 if (sreloc == NULL) 2912 { 2913 sreloc = score_elf_rel_dyn_section (dynobj, TRUE); 2914 if (sreloc == NULL) 2915 return FALSE; 2916 } 2917 #define SCORE_READONLY_SECTION (SEC_ALLOC | SEC_LOAD | SEC_READONLY) 2918 if (bfd_link_pic (info)) 2919 { 2920 /* When creating a shared object, we must copy these reloc types into 2921 the output file as R_SCORE_REL32 relocs. We make room for this reloc 2922 in the .rel.dyn reloc section. */ 2923 score_elf_allocate_dynamic_relocations (dynobj, 1); 2924 if ((sec->flags & SCORE_READONLY_SECTION) 2925 == SCORE_READONLY_SECTION) 2926 /* We tell the dynamic linker that there are 2927 relocations against the text segment. */ 2928 info->flags |= DF_TEXTREL; 2929 } 2930 else 2931 { 2932 struct score_elf_link_hash_entry *hscore; 2933 2934 /* We only need to copy this reloc if the symbol is 2935 defined in a dynamic object. */ 2936 hscore = (struct score_elf_link_hash_entry *)h; 2937 ++hscore->possibly_dynamic_relocs; 2938 if ((sec->flags & SCORE_READONLY_SECTION) 2939 == SCORE_READONLY_SECTION) 2940 /* We need it to tell the dynamic linker if there 2941 are relocations against the text segment. */ 2942 hscore->readonly_reloc = TRUE; 2943 } 2944 2945 /* Even though we don't directly need a GOT entry for this symbol, 2946 a symbol must have a dynamic symbol table index greater that 2947 DT_SCORE_GOTSYM if there are dynamic relocations against it. */ 2948 if (h != NULL) 2949 { 2950 if (dynobj == NULL) 2951 elf_hash_table (info)->dynobj = dynobj = abfd; 2952 if (! score_elf_create_got_section (dynobj, info, TRUE)) 2953 return FALSE; 2954 g = score_elf_got_info (dynobj, &sgot); 2955 if (! score_elf_record_global_got_symbol (h, abfd, info, g)) 2956 return FALSE; 2957 } 2958 } 2959 break; 2960 2961 /* This relocation describes the C++ object vtable hierarchy. 2962 Reconstruct it for later use during GC. */ 2963 case R_SCORE_GNU_VTINHERIT: 2964 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 2965 return FALSE; 2966 break; 2967 2968 /* This relocation describes which C++ vtable entries are actually 2969 used. Record for later use during GC. */ 2970 case R_SCORE_GNU_VTENTRY: 2971 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) 2972 return FALSE; 2973 break; 2974 default: 2975 break; 2976 } 2977 2978 /* We must not create a stub for a symbol that has relocations 2979 related to taking the function's address. */ 2980 switch (r_type) 2981 { 2982 default: 2983 if (h != NULL) 2984 { 2985 struct score_elf_link_hash_entry *sh; 2986 2987 sh = (struct score_elf_link_hash_entry *) h; 2988 sh->no_fn_stub = TRUE; 2989 } 2990 break; 2991 case R_SCORE_CALL15: 2992 break; 2993 } 2994 } 2995 2996 return TRUE; 2997 } 2998 2999 static bfd_boolean 3000 s3_bfd_score_elf_add_symbol_hook (bfd *abfd, 3001 struct bfd_link_info *info ATTRIBUTE_UNUSED, 3002 Elf_Internal_Sym *sym, 3003 const char **namep ATTRIBUTE_UNUSED, 3004 flagword *flagsp ATTRIBUTE_UNUSED, 3005 asection **secp, 3006 bfd_vma *valp) 3007 { 3008 switch (sym->st_shndx) 3009 { 3010 case SHN_COMMON: 3011 if (sym->st_size > elf_gp_size (abfd)) 3012 break; 3013 /* Fall through. */ 3014 case SHN_SCORE_SCOMMON: 3015 *secp = bfd_make_section_old_way (abfd, ".scommon"); 3016 (*secp)->flags |= SEC_IS_COMMON; 3017 *valp = sym->st_size; 3018 break; 3019 } 3020 3021 return TRUE; 3022 } 3023 3024 static void 3025 s3_bfd_score_elf_symbol_processing (bfd *abfd, asymbol *asym) 3026 { 3027 elf_symbol_type *elfsym; 3028 3029 elfsym = (elf_symbol_type *) asym; 3030 switch (elfsym->internal_elf_sym.st_shndx) 3031 { 3032 case SHN_COMMON: 3033 if (asym->value > elf_gp_size (abfd)) 3034 break; 3035 /* Fall through. */ 3036 case SHN_SCORE_SCOMMON: 3037 if (score_elf_scom_section.name == NULL) 3038 { 3039 /* Initialize the small common section. */ 3040 score_elf_scom_section.name = ".scommon"; 3041 score_elf_scom_section.flags = SEC_IS_COMMON; 3042 score_elf_scom_section.output_section = &score_elf_scom_section; 3043 score_elf_scom_section.symbol = &score_elf_scom_symbol; 3044 score_elf_scom_section.symbol_ptr_ptr = &score_elf_scom_symbol_ptr; 3045 score_elf_scom_symbol.name = ".scommon"; 3046 score_elf_scom_symbol.flags = BSF_SECTION_SYM; 3047 score_elf_scom_symbol.section = &score_elf_scom_section; 3048 score_elf_scom_symbol_ptr = &score_elf_scom_symbol; 3049 } 3050 asym->section = &score_elf_scom_section; 3051 asym->value = elfsym->internal_elf_sym.st_size; 3052 break; 3053 } 3054 } 3055 3056 static int 3057 s3_bfd_score_elf_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED, 3058 const char *name ATTRIBUTE_UNUSED, 3059 Elf_Internal_Sym *sym, 3060 asection *input_sec, 3061 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) 3062 { 3063 /* If we see a common symbol, which implies a relocatable link, then 3064 if a symbol was small common in an input file, mark it as small 3065 common in the output file. */ 3066 if (sym->st_shndx == SHN_COMMON && strcmp (input_sec->name, ".scommon") == 0) 3067 sym->st_shndx = SHN_SCORE_SCOMMON; 3068 3069 return 1; 3070 } 3071 3072 static bfd_boolean 3073 s3_bfd_score_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, 3074 asection *sec, 3075 int *retval) 3076 { 3077 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) 3078 { 3079 *retval = SHN_SCORE_SCOMMON; 3080 return TRUE; 3081 } 3082 3083 return FALSE; 3084 } 3085 3086 /* Adjust a symbol defined by a dynamic object and referenced by a 3087 regular object. The current definition is in some section of the 3088 dynamic object, but we're not including those sections. We have to 3089 change the definition to something the rest of the link can understand. */ 3090 static bfd_boolean 3091 s3_bfd_score_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 3092 struct elf_link_hash_entry *h) 3093 { 3094 bfd *dynobj; 3095 struct score_elf_link_hash_entry *hscore; 3096 asection *s; 3097 3098 dynobj = elf_hash_table (info)->dynobj; 3099 3100 /* Make sure we know what is going on here. */ 3101 BFD_ASSERT (dynobj != NULL 3102 && (h->needs_plt 3103 || h->u.weakdef != NULL 3104 || (h->def_dynamic && h->ref_regular && !h->def_regular))); 3105 3106 /* If this symbol is defined in a dynamic object, we need to copy 3107 any R_SCORE_ABS32 or R_SCORE_REL32 relocs against it into the output 3108 file. */ 3109 hscore = (struct score_elf_link_hash_entry *)h; 3110 if (!bfd_link_relocatable (info) 3111 && hscore->possibly_dynamic_relocs != 0 3112 && (h->root.type == bfd_link_hash_defweak || !h->def_regular)) 3113 { 3114 score_elf_allocate_dynamic_relocations (dynobj, hscore->possibly_dynamic_relocs); 3115 if (hscore->readonly_reloc) 3116 /* We tell the dynamic linker that there are relocations 3117 against the text segment. */ 3118 info->flags |= DF_TEXTREL; 3119 } 3120 3121 /* For a function, create a stub, if allowed. */ 3122 if (!hscore->no_fn_stub && h->needs_plt) 3123 { 3124 if (!elf_hash_table (info)->dynamic_sections_created) 3125 return TRUE; 3126 3127 /* If this symbol is not defined in a regular file, then set 3128 the symbol to the stub location. This is required to make 3129 function pointers compare as equal between the normal 3130 executable and the shared library. */ 3131 if (!h->def_regular) 3132 { 3133 /* We need .stub section. */ 3134 s = bfd_get_linker_section (dynobj, SCORE_ELF_STUB_SECTION_NAME); 3135 BFD_ASSERT (s != NULL); 3136 3137 h->root.u.def.section = s; 3138 h->root.u.def.value = s->size; 3139 3140 /* XXX Write this stub address somewhere. */ 3141 h->plt.offset = s->size; 3142 3143 /* Make room for this stub code. */ 3144 s->size += SCORE_FUNCTION_STUB_SIZE; 3145 3146 /* The last half word of the stub will be filled with the index 3147 of this symbol in .dynsym section. */ 3148 return TRUE; 3149 } 3150 } 3151 else if ((h->type == STT_FUNC) && !h->needs_plt) 3152 { 3153 /* This will set the entry for this symbol in the GOT to 0, and 3154 the dynamic linker will take care of this. */ 3155 h->root.u.def.value = 0; 3156 return TRUE; 3157 } 3158 3159 /* If this is a weak symbol, and there is a real definition, the 3160 processor independent code will have arranged for us to see the 3161 real definition first, and we can just use the same value. */ 3162 if (h->u.weakdef != NULL) 3163 { 3164 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 3165 || h->u.weakdef->root.type == bfd_link_hash_defweak); 3166 h->root.u.def.section = h->u.weakdef->root.u.def.section; 3167 h->root.u.def.value = h->u.weakdef->root.u.def.value; 3168 return TRUE; 3169 } 3170 3171 /* This is a reference to a symbol defined by a dynamic object which 3172 is not a function. */ 3173 return TRUE; 3174 } 3175 3176 /* This function is called after all the input files have been read, 3177 and the input sections have been assigned to output sections. */ 3178 static bfd_boolean 3179 s3_bfd_score_elf_always_size_sections (bfd *output_bfd, 3180 struct bfd_link_info *info) 3181 { 3182 bfd *dynobj; 3183 asection *s; 3184 struct score_got_info *g; 3185 int i; 3186 bfd_size_type loadable_size = 0; 3187 bfd_size_type local_gotno; 3188 bfd *sub; 3189 3190 dynobj = elf_hash_table (info)->dynobj; 3191 if (dynobj == NULL) 3192 /* Relocatable links don't have it. */ 3193 return TRUE; 3194 3195 g = score_elf_got_info (dynobj, &s); 3196 if (s == NULL) 3197 return TRUE; 3198 3199 /* Calculate the total loadable size of the output. That will give us the 3200 maximum number of GOT_PAGE entries required. */ 3201 for (sub = info->input_bfds; sub; sub = sub->link.next) 3202 { 3203 asection *subsection; 3204 3205 for (subsection = sub->sections; 3206 subsection; 3207 subsection = subsection->next) 3208 { 3209 if ((subsection->flags & SEC_ALLOC) == 0) 3210 continue; 3211 loadable_size += ((subsection->size + 0xf) 3212 &~ (bfd_size_type) 0xf); 3213 } 3214 } 3215 3216 /* There has to be a global GOT entry for every symbol with 3217 a dynamic symbol table index of DT_SCORE_GOTSYM or 3218 higher. Therefore, it make sense to put those symbols 3219 that need GOT entries at the end of the symbol table. We 3220 do that here. */ 3221 if (! score_elf_sort_hash_table (info, 1)) 3222 return FALSE; 3223 3224 if (g->global_gotsym != NULL) 3225 i = elf_hash_table (info)->dynsymcount - g->global_gotsym->dynindx; 3226 else 3227 /* If there are no global symbols, or none requiring 3228 relocations, then GLOBAL_GOTSYM will be NULL. */ 3229 i = 0; 3230 3231 /* In the worst case, we'll get one stub per dynamic symbol. */ 3232 loadable_size += SCORE_FUNCTION_STUB_SIZE * i; 3233 3234 /* Assume there are two loadable segments consisting of 3235 contiguous sections. Is 5 enough? */ 3236 local_gotno = (loadable_size >> 16) + 5; 3237 3238 g->local_gotno += local_gotno; 3239 s->size += g->local_gotno * SCORE_ELF_GOT_SIZE (output_bfd); 3240 3241 g->global_gotno = i; 3242 s->size += i * SCORE_ELF_GOT_SIZE (output_bfd); 3243 3244 score_elf_resolve_final_got_entries (g); 3245 3246 if (s->size > SCORE_ELF_GOT_MAX_SIZE (output_bfd)) 3247 { 3248 /* Fixme. Error message or Warning message should be issued here. */ 3249 } 3250 3251 return TRUE; 3252 } 3253 3254 /* Set the sizes of the dynamic sections. */ 3255 static bfd_boolean 3256 s3_bfd_score_elf_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) 3257 { 3258 bfd *dynobj; 3259 asection *s; 3260 bfd_boolean reltext; 3261 3262 dynobj = elf_hash_table (info)->dynobj; 3263 BFD_ASSERT (dynobj != NULL); 3264 3265 if (elf_hash_table (info)->dynamic_sections_created) 3266 { 3267 /* Set the contents of the .interp section to the interpreter. */ 3268 if (!bfd_link_pic (info) && !info->nointerp) 3269 { 3270 s = bfd_get_linker_section (dynobj, ".interp"); 3271 BFD_ASSERT (s != NULL); 3272 s->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1; 3273 s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; 3274 } 3275 } 3276 3277 /* The check_relocs and adjust_dynamic_symbol entry points have 3278 determined the sizes of the various dynamic sections. Allocate 3279 memory for them. */ 3280 reltext = FALSE; 3281 for (s = dynobj->sections; s != NULL; s = s->next) 3282 { 3283 const char *name; 3284 3285 if ((s->flags & SEC_LINKER_CREATED) == 0) 3286 continue; 3287 3288 /* It's OK to base decisions on the section name, because none 3289 of the dynobj section names depend upon the input files. */ 3290 name = bfd_get_section_name (dynobj, s); 3291 3292 if (CONST_STRNEQ (name, ".rel")) 3293 { 3294 if (s->size == 0) 3295 { 3296 /* We only strip the section if the output section name 3297 has the same name. Otherwise, there might be several 3298 input sections for this output section. FIXME: This 3299 code is probably not needed these days anyhow, since 3300 the linker now does not create empty output sections. */ 3301 if (s->output_section != NULL 3302 && strcmp (name, 3303 bfd_get_section_name (s->output_section->owner, 3304 s->output_section)) == 0) 3305 s->flags |= SEC_EXCLUDE; 3306 } 3307 else 3308 { 3309 const char *outname; 3310 asection *target; 3311 3312 /* If this relocation section applies to a read only 3313 section, then we probably need a DT_TEXTREL entry. 3314 If the relocation section is .rel.dyn, we always 3315 assert a DT_TEXTREL entry rather than testing whether 3316 there exists a relocation to a read only section or 3317 not. */ 3318 outname = bfd_get_section_name (output_bfd, s->output_section); 3319 target = bfd_get_section_by_name (output_bfd, outname + 4); 3320 if ((target != NULL 3321 && (target->flags & SEC_READONLY) != 0 3322 && (target->flags & SEC_ALLOC) != 0) || strcmp (outname, ".rel.dyn") == 0) 3323 reltext = TRUE; 3324 3325 /* We use the reloc_count field as a counter if we need 3326 to copy relocs into the output file. */ 3327 if (strcmp (name, ".rel.dyn") != 0) 3328 s->reloc_count = 0; 3329 } 3330 } 3331 else if (CONST_STRNEQ (name, ".got")) 3332 { 3333 /* s3_bfd_score_elf_always_size_sections() has already done 3334 most of the work, but some symbols may have been mapped 3335 to versions that we must now resolve in the got_entries 3336 hash tables. */ 3337 } 3338 else if (strcmp (name, SCORE_ELF_STUB_SECTION_NAME) == 0) 3339 { 3340 /* IRIX rld assumes that the function stub isn't at the end 3341 of .text section. So put a dummy. XXX */ 3342 s->size += SCORE_FUNCTION_STUB_SIZE; 3343 } 3344 else if (! CONST_STRNEQ (name, ".init")) 3345 { 3346 /* It's not one of our sections, so don't allocate space. */ 3347 continue; 3348 } 3349 3350 /* Allocate memory for the section contents. */ 3351 s->contents = bfd_zalloc (dynobj, s->size); 3352 if (s->contents == NULL && s->size != 0) 3353 { 3354 bfd_set_error (bfd_error_no_memory); 3355 return FALSE; 3356 } 3357 } 3358 3359 if (elf_hash_table (info)->dynamic_sections_created) 3360 { 3361 /* Add some entries to the .dynamic section. We fill in the 3362 values later, in s3_bfd_score_elf_finish_dynamic_sections, but we 3363 must add the entries now so that we get the correct size for 3364 the .dynamic section. The DT_DEBUG entry is filled in by the 3365 dynamic linker and used by the debugger. */ 3366 3367 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0)) 3368 return FALSE; 3369 3370 if (reltext) 3371 info->flags |= DF_TEXTREL; 3372 3373 if ((info->flags & DF_TEXTREL) != 0) 3374 { 3375 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0)) 3376 return FALSE; 3377 } 3378 3379 if (! SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0)) 3380 return FALSE; 3381 3382 if (score_elf_rel_dyn_section (dynobj, FALSE)) 3383 { 3384 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0)) 3385 return FALSE; 3386 3387 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0)) 3388 return FALSE; 3389 3390 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0)) 3391 return FALSE; 3392 } 3393 3394 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_BASE_ADDRESS, 0)) 3395 return FALSE; 3396 3397 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_LOCAL_GOTNO, 0)) 3398 return FALSE; 3399 3400 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_SYMTABNO, 0)) 3401 return FALSE; 3402 3403 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_UNREFEXTNO, 0)) 3404 return FALSE; 3405 3406 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_GOTSYM, 0)) 3407 return FALSE; 3408 3409 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_HIPAGENO, 0)) 3410 return FALSE; 3411 } 3412 3413 return TRUE; 3414 } 3415 3416 static bfd_boolean 3417 s3_bfd_score_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 3418 { 3419 struct elf_link_hash_entry *h; 3420 struct bfd_link_hash_entry *bh; 3421 flagword flags; 3422 asection *s; 3423 3424 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 3425 | SEC_LINKER_CREATED | SEC_READONLY); 3426 3427 /* ABI requests the .dynamic section to be read only. */ 3428 s = bfd_get_linker_section (abfd, ".dynamic"); 3429 if (s != NULL) 3430 { 3431 if (!bfd_set_section_flags (abfd, s, flags)) 3432 return FALSE; 3433 } 3434 3435 /* We need to create .got section. */ 3436 if (!score_elf_create_got_section (abfd, info, FALSE)) 3437 return FALSE; 3438 3439 if (!score_elf_rel_dyn_section (elf_hash_table (info)->dynobj, TRUE)) 3440 return FALSE; 3441 3442 /* Create .stub section. */ 3443 if (bfd_get_linker_section (abfd, SCORE_ELF_STUB_SECTION_NAME) == NULL) 3444 { 3445 s = bfd_make_section_anyway_with_flags (abfd, SCORE_ELF_STUB_SECTION_NAME, 3446 flags | SEC_CODE); 3447 if (s == NULL 3448 || !bfd_set_section_alignment (abfd, s, 2)) 3449 3450 return FALSE; 3451 } 3452 3453 if (!bfd_link_pic (info)) 3454 { 3455 const char *name; 3456 3457 name = "_DYNAMIC_LINK"; 3458 bh = NULL; 3459 if (!(_bfd_generic_link_add_one_symbol 3460 (info, abfd, name, BSF_GLOBAL, bfd_abs_section_ptr, 3461 (bfd_vma) 0, NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) 3462 return FALSE; 3463 3464 h = (struct elf_link_hash_entry *)bh; 3465 h->non_elf = 0; 3466 h->def_regular = 1; 3467 h->type = STT_SECTION; 3468 3469 if (!bfd_elf_link_record_dynamic_symbol (info, h)) 3470 return FALSE; 3471 } 3472 3473 return TRUE; 3474 } 3475 3476 3477 /* Finish up dynamic symbol handling. We set the contents of various 3478 dynamic sections here. */ 3479 static bfd_boolean 3480 s3_bfd_score_elf_finish_dynamic_symbol (bfd *output_bfd, 3481 struct bfd_link_info *info, 3482 struct elf_link_hash_entry *h, 3483 Elf_Internal_Sym *sym) 3484 { 3485 bfd *dynobj; 3486 asection *sgot; 3487 struct score_got_info *g; 3488 const char *name; 3489 3490 dynobj = elf_hash_table (info)->dynobj; 3491 3492 if (h->plt.offset != MINUS_ONE) 3493 { 3494 asection *s; 3495 bfd_byte stub[SCORE_FUNCTION_STUB_SIZE]; 3496 3497 /* This symbol has a stub. Set it up. */ 3498 BFD_ASSERT (h->dynindx != -1); 3499 3500 s = bfd_get_linker_section (dynobj, SCORE_ELF_STUB_SECTION_NAME); 3501 BFD_ASSERT (s != NULL); 3502 3503 /* FIXME: Can h->dynindex be more than 64K? */ 3504 if (h->dynindx & 0xffff0000) 3505 return FALSE; 3506 3507 /* Fill the stub. */ 3508 score_bfd_put_32 (output_bfd, STUB_LW, stub); 3509 score_bfd_put_32 (output_bfd, STUB_MOVE, stub + 4); 3510 score_bfd_put_32 (output_bfd, STUB_LI16 | (h->dynindx << 1), stub + 8); 3511 score_bfd_put_32 (output_bfd, STUB_BRL, stub + 12); 3512 3513 BFD_ASSERT (h->plt.offset <= s->size); 3514 memcpy (s->contents + h->plt.offset, stub, SCORE_FUNCTION_STUB_SIZE); 3515 3516 /* Mark the symbol as undefined. plt.offset != -1 occurs 3517 only for the referenced symbol. */ 3518 sym->st_shndx = SHN_UNDEF; 3519 3520 /* The run-time linker uses the st_value field of the symbol 3521 to reset the global offset table entry for this external 3522 to its stub address when unlinking a shared object. */ 3523 sym->st_value = (s->output_section->vma + s->output_offset + h->plt.offset); 3524 } 3525 3526 BFD_ASSERT (h->dynindx != -1 || h->forced_local); 3527 3528 sgot = score_elf_got_section (dynobj, FALSE); 3529 BFD_ASSERT (sgot != NULL); 3530 BFD_ASSERT (score_elf_section_data (sgot) != NULL); 3531 g = score_elf_section_data (sgot)->u.got_info; 3532 BFD_ASSERT (g != NULL); 3533 3534 /* Run through the global symbol table, creating GOT entries for all 3535 the symbols that need them. */ 3536 if (g->global_gotsym != NULL && h->dynindx >= g->global_gotsym->dynindx) 3537 { 3538 bfd_vma offset; 3539 bfd_vma value; 3540 3541 value = sym->st_value; 3542 offset = score_elf_global_got_index (dynobj, h); 3543 score_bfd_put_32 (output_bfd, value, sgot->contents + offset); 3544 } 3545 3546 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ 3547 name = h->root.root.string; 3548 if (h == elf_hash_table (info)->hdynamic 3549 || h == elf_hash_table (info)->hgot) 3550 sym->st_shndx = SHN_ABS; 3551 else if (strcmp (name, "_DYNAMIC_LINK") == 0) 3552 { 3553 sym->st_shndx = SHN_ABS; 3554 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); 3555 sym->st_value = 1; 3556 } 3557 else if (strcmp (name, GP_DISP_LABEL) == 0) 3558 { 3559 sym->st_shndx = SHN_ABS; 3560 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); 3561 sym->st_value = elf_gp (output_bfd); 3562 } 3563 3564 return TRUE; 3565 } 3566 3567 /* Finish up the dynamic sections. */ 3568 static bfd_boolean 3569 s3_bfd_score_elf_finish_dynamic_sections (bfd *output_bfd, 3570 struct bfd_link_info *info) 3571 { 3572 bfd *dynobj; 3573 asection *sdyn; 3574 asection *sgot; 3575 asection *s; 3576 struct score_got_info *g; 3577 3578 dynobj = elf_hash_table (info)->dynobj; 3579 3580 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 3581 3582 sgot = score_elf_got_section (dynobj, FALSE); 3583 if (sgot == NULL) 3584 g = NULL; 3585 else 3586 { 3587 BFD_ASSERT (score_elf_section_data (sgot) != NULL); 3588 g = score_elf_section_data (sgot)->u.got_info; 3589 BFD_ASSERT (g != NULL); 3590 } 3591 3592 if (elf_hash_table (info)->dynamic_sections_created) 3593 { 3594 bfd_byte *b; 3595 3596 BFD_ASSERT (sdyn != NULL); 3597 BFD_ASSERT (g != NULL); 3598 3599 for (b = sdyn->contents; 3600 b < sdyn->contents + sdyn->size; 3601 b += SCORE_ELF_DYN_SIZE (dynobj)) 3602 { 3603 Elf_Internal_Dyn dyn; 3604 const char *name; 3605 size_t elemsize; 3606 bfd_boolean swap_out_p; 3607 3608 /* Read in the current dynamic entry. */ 3609 (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); 3610 3611 /* Assume that we're going to modify it and write it out. */ 3612 swap_out_p = TRUE; 3613 3614 switch (dyn.d_tag) 3615 { 3616 case DT_RELENT: 3617 dyn.d_un.d_val = SCORE_ELF_REL_SIZE (dynobj); 3618 break; 3619 3620 case DT_STRSZ: 3621 /* Rewrite DT_STRSZ. */ 3622 dyn.d_un.d_val 3623 = _bfd_elf_strtab_size (elf_hash_table (info)->dynstr); 3624 break; 3625 3626 case DT_PLTGOT: 3627 name = ".got"; 3628 s = bfd_get_linker_section (dynobj, name); 3629 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 3630 break; 3631 3632 case DT_SCORE_BASE_ADDRESS: 3633 s = output_bfd->sections; 3634 BFD_ASSERT (s != NULL); 3635 dyn.d_un.d_ptr = s->vma & ~(bfd_vma) 0xffff; 3636 break; 3637 3638 case DT_SCORE_LOCAL_GOTNO: 3639 dyn.d_un.d_val = g->local_gotno; 3640 break; 3641 3642 case DT_SCORE_UNREFEXTNO: 3643 /* The index into the dynamic symbol table which is the 3644 entry of the first external symbol that is not 3645 referenced within the same object. */ 3646 dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1; 3647 break; 3648 3649 case DT_SCORE_GOTSYM: 3650 if (g->global_gotsym) 3651 { 3652 dyn.d_un.d_val = g->global_gotsym->dynindx; 3653 break; 3654 } 3655 /* In case if we don't have global got symbols we default 3656 to setting DT_SCORE_GOTSYM to the same value as 3657 DT_SCORE_SYMTABNO, so we just fall through. */ 3658 3659 case DT_SCORE_SYMTABNO: 3660 name = ".dynsym"; 3661 elemsize = SCORE_ELF_SYM_SIZE (output_bfd); 3662 s = bfd_get_linker_section (dynobj, name); 3663 dyn.d_un.d_val = s->size / elemsize; 3664 break; 3665 3666 case DT_SCORE_HIPAGENO: 3667 dyn.d_un.d_val = g->local_gotno - SCORE_RESERVED_GOTNO; 3668 break; 3669 3670 default: 3671 swap_out_p = FALSE; 3672 break; 3673 } 3674 3675 if (swap_out_p) 3676 (*get_elf_backend_data (dynobj)->s->swap_dyn_out) (dynobj, &dyn, b); 3677 } 3678 } 3679 3680 /* The first entry of the global offset table will be filled at 3681 runtime. The second entry will be used by some runtime loaders. 3682 This isn't the case of IRIX rld. */ 3683 if (sgot != NULL && sgot->size > 0) 3684 { 3685 score_bfd_put_32 (output_bfd, 0, sgot->contents); 3686 score_bfd_put_32 (output_bfd, 0x80000000, sgot->contents + SCORE_ELF_GOT_SIZE (output_bfd)); 3687 } 3688 3689 if (sgot != NULL) 3690 elf_section_data (sgot->output_section)->this_hdr.sh_entsize 3691 = SCORE_ELF_GOT_SIZE (output_bfd); 3692 3693 3694 /* We need to sort the entries of the dynamic relocation section. */ 3695 s = score_elf_rel_dyn_section (dynobj, FALSE); 3696 3697 if (s != NULL && s->size > (bfd_vma)2 * SCORE_ELF_REL_SIZE (output_bfd)) 3698 { 3699 reldyn_sorting_bfd = output_bfd; 3700 qsort ((Elf32_External_Rel *) s->contents + 1, s->reloc_count - 1, 3701 sizeof (Elf32_External_Rel), score_elf_sort_dynamic_relocs); 3702 } 3703 3704 return TRUE; 3705 } 3706 3707 /* This function set up the ELF section header for a BFD section in preparation for writing 3708 it out. This is where the flags and type fields are set for unusual sections. */ 3709 static bfd_boolean 3710 s3_bfd_score_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, 3711 Elf_Internal_Shdr *hdr, 3712 asection *sec) 3713 { 3714 const char *name; 3715 3716 name = bfd_get_section_name (abfd, sec); 3717 3718 if (strcmp (name, ".got") == 0 3719 || strcmp (name, ".srdata") == 0 3720 || strcmp (name, ".sdata") == 0 3721 || strcmp (name, ".sbss") == 0) 3722 hdr->sh_flags |= SHF_SCORE_GPREL; 3723 3724 return TRUE; 3725 } 3726 3727 /* This function do additional processing on the ELF section header before writing 3728 it out. This is used to set the flags and type fields for some sections. */ 3729 3730 /* assign_file_positions_except_relocs() check section flag and if it is allocatable, 3731 warning message will be issued. backend_fake_section is called before 3732 assign_file_positions_except_relocs(); backend_section_processing after it. so, we 3733 modify section flag there, but not backend_fake_section. */ 3734 static bfd_boolean 3735 s3_bfd_score_elf_section_processing (bfd *abfd ATTRIBUTE_UNUSED, Elf_Internal_Shdr *hdr) 3736 { 3737 if (hdr->bfd_section != NULL) 3738 { 3739 const char *name = bfd_get_section_name (abfd, hdr->bfd_section); 3740 3741 if (strcmp (name, ".sdata") == 0) 3742 { 3743 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_SCORE_GPREL; 3744 hdr->sh_type = SHT_PROGBITS; 3745 } 3746 else if (strcmp (name, ".sbss") == 0) 3747 { 3748 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_SCORE_GPREL; 3749 hdr->sh_type = SHT_NOBITS; 3750 } 3751 else if (strcmp (name, ".srdata") == 0) 3752 { 3753 hdr->sh_flags |= SHF_ALLOC | SHF_SCORE_GPREL; 3754 hdr->sh_type = SHT_PROGBITS; 3755 } 3756 } 3757 3758 return TRUE; 3759 } 3760 3761 static bfd_boolean 3762 s3_bfd_score_elf_write_section (bfd *output_bfd, asection *sec, bfd_byte *contents) 3763 { 3764 bfd_byte *to, *from, *end; 3765 int i; 3766 3767 if (strcmp (sec->name, ".pdr") != 0) 3768 return FALSE; 3769 3770 if (score_elf_section_data (sec)->u.tdata == NULL) 3771 return FALSE; 3772 3773 to = contents; 3774 end = contents + sec->size; 3775 for (from = contents, i = 0; from < end; from += PDR_SIZE, i++) 3776 { 3777 if ((score_elf_section_data (sec)->u.tdata)[i] == 1) 3778 continue; 3779 3780 if (to != from) 3781 memcpy (to, from, PDR_SIZE); 3782 3783 to += PDR_SIZE; 3784 } 3785 bfd_set_section_contents (output_bfd, sec->output_section, contents, 3786 (file_ptr) sec->output_offset, sec->size); 3787 3788 return TRUE; 3789 } 3790 3791 /* Copy data from a SCORE ELF indirect symbol to its direct symbol, hiding the old 3792 indirect symbol. Process additional relocation information. */ 3793 static void 3794 s3_bfd_score_elf_copy_indirect_symbol (struct bfd_link_info *info, 3795 struct elf_link_hash_entry *dir, 3796 struct elf_link_hash_entry *ind) 3797 { 3798 struct score_elf_link_hash_entry *dirscore, *indscore; 3799 3800 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 3801 3802 if (ind->root.type != bfd_link_hash_indirect) 3803 return; 3804 3805 dirscore = (struct score_elf_link_hash_entry *) dir; 3806 indscore = (struct score_elf_link_hash_entry *) ind; 3807 dirscore->possibly_dynamic_relocs += indscore->possibly_dynamic_relocs; 3808 3809 if (indscore->readonly_reloc) 3810 dirscore->readonly_reloc = TRUE; 3811 3812 if (indscore->no_fn_stub) 3813 dirscore->no_fn_stub = TRUE; 3814 } 3815 3816 /* Remove information about discarded functions from other sections which mention them. */ 3817 static bfd_boolean 3818 s3_bfd_score_elf_discard_info (bfd *abfd, struct elf_reloc_cookie *cookie, 3819 struct bfd_link_info *info) 3820 { 3821 asection *o; 3822 bfd_boolean ret = FALSE; 3823 unsigned char *tdata; 3824 size_t i, skip; 3825 3826 o = bfd_get_section_by_name (abfd, ".pdr"); 3827 if ((!o) || (o->size == 0) || (o->size % PDR_SIZE != 0) 3828 || (o->output_section != NULL && bfd_is_abs_section (o->output_section))) 3829 return FALSE; 3830 3831 tdata = bfd_zmalloc (o->size / PDR_SIZE); 3832 if (!tdata) 3833 return FALSE; 3834 3835 cookie->rels = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, info->keep_memory); 3836 if (!cookie->rels) 3837 { 3838 free (tdata); 3839 return FALSE; 3840 } 3841 3842 cookie->rel = cookie->rels; 3843 cookie->relend = cookie->rels + o->reloc_count; 3844 3845 for (i = 0, skip = 0; i < o->size; i++) 3846 { 3847 if (bfd_elf_reloc_symbol_deleted_p (i * PDR_SIZE, cookie)) 3848 { 3849 tdata[i] = 1; 3850 skip++; 3851 } 3852 } 3853 3854 if (skip != 0) 3855 { 3856 score_elf_section_data (o)->u.tdata = tdata; 3857 o->size -= skip * PDR_SIZE; 3858 ret = TRUE; 3859 } 3860 else 3861 free (tdata); 3862 3863 if (!info->keep_memory) 3864 free (cookie->rels); 3865 3866 return ret; 3867 } 3868 3869 /* Signal that discard_info() has removed the discarded relocations for this section. */ 3870 static bfd_boolean 3871 s3_bfd_score_elf_ignore_discarded_relocs (asection *sec) 3872 { 3873 if (strcmp (sec->name, ".pdr") == 0) 3874 return TRUE; 3875 return FALSE; 3876 } 3877 3878 /* Return the section that should be marked against GC for a given 3879 relocation. */ 3880 static asection * 3881 s3_bfd_score_elf_gc_mark_hook (asection *sec, 3882 struct bfd_link_info *info, 3883 Elf_Internal_Rela *rel, 3884 struct elf_link_hash_entry *h, 3885 Elf_Internal_Sym *sym) 3886 { 3887 if (h != NULL) 3888 switch (ELF32_R_TYPE (rel->r_info)) 3889 { 3890 case R_SCORE_GNU_VTINHERIT: 3891 case R_SCORE_GNU_VTENTRY: 3892 return NULL; 3893 } 3894 3895 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 3896 } 3897 3898 /* Support for core dump NOTE sections. */ 3899 3900 static bfd_boolean 3901 s3_bfd_score_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 3902 { 3903 int offset; 3904 unsigned int raw_size; 3905 3906 switch (note->descsz) 3907 { 3908 default: 3909 return FALSE; 3910 3911 case 148: /* Linux/Score 32-bit. */ 3912 /* pr_cursig */ 3913 elf_tdata (abfd)->core->signal 3914 = score_bfd_get_16 (abfd, note->descdata + 12); 3915 3916 /* pr_pid */ 3917 elf_tdata (abfd)->core->lwpid 3918 = score_bfd_get_32 (abfd, note->descdata + 24); 3919 3920 /* pr_reg */ 3921 offset = 72; 3922 raw_size = 72; 3923 3924 break; 3925 } 3926 3927 /* Make a ".reg/999" section. */ 3928 return _bfd_elfcore_make_pseudosection (abfd, ".reg", raw_size, 3929 note->descpos + offset); 3930 } 3931 3932 static bfd_boolean 3933 s3_bfd_score_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 3934 { 3935 switch (note->descsz) 3936 { 3937 default: 3938 return FALSE; 3939 3940 case 124: /* Linux/Score elf_prpsinfo. */ 3941 elf_tdata (abfd)->core->program 3942 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); 3943 elf_tdata (abfd)->core->command 3944 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); 3945 } 3946 3947 /* Note that for some reason, a spurious space is tacked 3948 onto the end of the args in some (at least one anyway) 3949 implementations, so strip it off if it exists. */ 3950 3951 { 3952 char *command = elf_tdata (abfd)->core->command; 3953 int n = strlen (command); 3954 3955 if (0 < n && command[n - 1] == ' ') 3956 command[n - 1] = '\0'; 3957 } 3958 3959 return TRUE; 3960 } 3961 3962 3963 /* Score BFD functions. */ 3964 static reloc_howto_type * 3965 s3_elf32_score_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code) 3966 { 3967 unsigned int i; 3968 3969 for (i = 0; i < ARRAY_SIZE (elf32_score_reloc_map); i++) 3970 if (elf32_score_reloc_map[i].bfd_reloc_val == code) 3971 return &elf32_score_howto_table[elf32_score_reloc_map[i].elf_reloc_val]; 3972 3973 return NULL; 3974 } 3975 3976 static reloc_howto_type * 3977 elf32_score_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 3978 const char *r_name) 3979 { 3980 unsigned int i; 3981 3982 for (i = 0; 3983 i < (sizeof (elf32_score_howto_table) 3984 / sizeof (elf32_score_howto_table[0])); 3985 i++) 3986 if (elf32_score_howto_table[i].name != NULL 3987 && strcasecmp (elf32_score_howto_table[i].name, r_name) == 0) 3988 return &elf32_score_howto_table[i]; 3989 3990 return NULL; 3991 } 3992 3993 static bfd_boolean 3994 s3_elf32_score_print_private_bfd_data (bfd *abfd, void * ptr) 3995 { 3996 FILE *file = (FILE *) ptr; 3997 3998 BFD_ASSERT (abfd != NULL && ptr != NULL); 3999 4000 /* Print normal ELF private data. */ 4001 _bfd_elf_print_private_bfd_data (abfd, ptr); 4002 4003 /* xgettext:c-format */ 4004 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); 4005 if (elf_elfheader (abfd)->e_flags & EF_SCORE_PIC) 4006 { 4007 fprintf (file, _(" [pic]")); 4008 } 4009 if (elf_elfheader (abfd)->e_flags & EF_SCORE_FIXDEP) 4010 { 4011 fprintf (file, _(" [fix dep]")); 4012 } 4013 fputc ('\n', file); 4014 4015 return TRUE; 4016 } 4017 4018 static bfd_boolean 4019 s3_elf32_score_merge_private_bfd_data (bfd *ibfd, bfd *obfd) 4020 { 4021 flagword in_flags; 4022 flagword out_flags; 4023 4024 if (!_bfd_generic_verify_endian_match (ibfd, obfd)) 4025 return FALSE; 4026 4027 in_flags = elf_elfheader (ibfd)->e_flags; 4028 out_flags = elf_elfheader (obfd)->e_flags; 4029 4030 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour 4031 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 4032 return TRUE; 4033 4034 in_flags = elf_elfheader (ibfd)->e_flags; 4035 out_flags = elf_elfheader (obfd)->e_flags; 4036 4037 if (! elf_flags_init (obfd)) 4038 { 4039 elf_flags_init (obfd) = TRUE; 4040 elf_elfheader (obfd)->e_flags = in_flags; 4041 4042 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) 4043 && bfd_get_arch_info (obfd)->the_default) 4044 { 4045 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); 4046 } 4047 4048 return TRUE; 4049 } 4050 4051 if (((in_flags & EF_SCORE_PIC) != 0) != ((out_flags & EF_SCORE_PIC) != 0)) 4052 { 4053 (*_bfd_error_handler) (_("%B: warning: linking PIC files with non-PIC files"), ibfd); 4054 } 4055 4056 /* FIXME: Maybe dependency fix compatibility should be checked here. */ 4057 4058 return TRUE; 4059 } 4060 4061 static bfd_boolean 4062 s3_elf32_score_new_section_hook (bfd *abfd, asection *sec) 4063 { 4064 struct _score_elf_section_data *sdata; 4065 bfd_size_type amt = sizeof (*sdata); 4066 4067 sdata = bfd_zalloc (abfd, amt); 4068 if (sdata == NULL) 4069 return FALSE; 4070 sec->used_by_bfd = sdata; 4071 4072 return _bfd_elf_new_section_hook (abfd, sec); 4073 } 4074 4075 /*****************************************************************************/ 4076 4077 /* s3_s7: backend hooks. */ 4078 static void 4079 _bfd_score_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, 4080 arelent *bfd_reloc, 4081 Elf_Internal_Rela *elf_reloc) 4082 { 4083 if (bfd_get_mach (abfd) == bfd_mach_score3) 4084 return s3_bfd_score_info_to_howto (abfd, bfd_reloc, elf_reloc); 4085 else 4086 return s7_bfd_score_info_to_howto (abfd, bfd_reloc, elf_reloc); 4087 } 4088 4089 static bfd_boolean 4090 _bfd_score_elf_relocate_section (bfd *output_bfd, 4091 struct bfd_link_info *info, 4092 bfd *input_bfd, 4093 asection *input_section, 4094 bfd_byte *contents, 4095 Elf_Internal_Rela *relocs, 4096 Elf_Internal_Sym *local_syms, 4097 asection **local_sections) 4098 { 4099 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4100 return s3_bfd_score_elf_relocate_section (output_bfd, 4101 info, input_bfd, input_section, contents, relocs, 4102 local_syms, local_sections); 4103 else 4104 return s7_bfd_score_elf_relocate_section (output_bfd, 4105 info, input_bfd, input_section, contents, relocs, 4106 local_syms, local_sections); 4107 } 4108 4109 static bfd_boolean 4110 _bfd_score_elf_check_relocs (bfd *abfd, 4111 struct bfd_link_info *info, 4112 asection *sec, 4113 const Elf_Internal_Rela *relocs) 4114 { 4115 if (bfd_get_mach (abfd) == bfd_mach_score3) 4116 return s3_bfd_score_elf_check_relocs (abfd, info, sec, relocs); 4117 else 4118 return s7_bfd_score_elf_check_relocs (abfd, info, sec, relocs); 4119 } 4120 4121 static bfd_boolean 4122 _bfd_score_elf_add_symbol_hook (bfd *abfd, 4123 struct bfd_link_info *info ATTRIBUTE_UNUSED, 4124 Elf_Internal_Sym *sym, 4125 const char **namep ATTRIBUTE_UNUSED, 4126 flagword *flagsp ATTRIBUTE_UNUSED, 4127 asection **secp, 4128 bfd_vma *valp) 4129 { 4130 if (bfd_get_mach (abfd) == bfd_mach_score3) 4131 return s3_bfd_score_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, 4132 secp, valp); 4133 else 4134 return s7_bfd_score_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, 4135 secp, valp); 4136 } 4137 4138 static void 4139 _bfd_score_elf_symbol_processing (bfd *abfd, asymbol *asym) 4140 { 4141 if (bfd_get_mach (abfd) == bfd_mach_score3) 4142 return s3_bfd_score_elf_symbol_processing (abfd, asym); 4143 else 4144 return s7_bfd_score_elf_symbol_processing (abfd, asym); 4145 } 4146 4147 static int 4148 _bfd_score_elf_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED, 4149 const char *name ATTRIBUTE_UNUSED, 4150 Elf_Internal_Sym *sym, 4151 asection *input_sec, 4152 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) 4153 { 4154 /* If link a empty .o, then this filed is NULL. */ 4155 if (info->input_bfds == NULL) 4156 { 4157 /* If we see a common symbol, which implies a relocatable link, then 4158 if a symbol was small common in an input file, mark it as small 4159 common in the output file. */ 4160 if (sym->st_shndx == SHN_COMMON && strcmp (input_sec->name, ".scommon") == 0) 4161 sym->st_shndx = SHN_SCORE_SCOMMON; 4162 return 1; 4163 } 4164 4165 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4166 return s3_bfd_score_elf_link_output_symbol_hook (info, name, sym, input_sec, h); 4167 else 4168 return s7_bfd_score_elf_link_output_symbol_hook (info, name, sym, input_sec, h); 4169 } 4170 4171 static bfd_boolean 4172 _bfd_score_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, 4173 asection *sec, 4174 int *retval) 4175 { 4176 if (bfd_get_mach (abfd) == bfd_mach_score3) 4177 return s3_bfd_score_elf_section_from_bfd_section (abfd, sec, retval); 4178 else 4179 return s7_bfd_score_elf_section_from_bfd_section (abfd, sec, retval); 4180 } 4181 4182 static bfd_boolean 4183 _bfd_score_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 4184 struct elf_link_hash_entry *h) 4185 { 4186 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4187 return s3_bfd_score_elf_adjust_dynamic_symbol (info, h); 4188 else 4189 return s7_bfd_score_elf_adjust_dynamic_symbol (info, h); 4190 } 4191 4192 static bfd_boolean 4193 _bfd_score_elf_always_size_sections (bfd *output_bfd, 4194 struct bfd_link_info *info) 4195 { 4196 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4197 return s3_bfd_score_elf_always_size_sections (output_bfd, info); 4198 else 4199 return s7_bfd_score_elf_always_size_sections (output_bfd, info); 4200 } 4201 4202 static bfd_boolean 4203 _bfd_score_elf_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) 4204 { 4205 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4206 return s3_bfd_score_elf_size_dynamic_sections (output_bfd, info); 4207 else 4208 return s7_bfd_score_elf_size_dynamic_sections (output_bfd, info); 4209 } 4210 4211 static bfd_boolean 4212 _bfd_score_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 4213 { 4214 if (bfd_get_mach (abfd) == bfd_mach_score3) 4215 return s3_bfd_score_elf_create_dynamic_sections (abfd, info); 4216 else 4217 return s7_bfd_score_elf_create_dynamic_sections (abfd, info); 4218 } 4219 4220 static bfd_boolean 4221 _bfd_score_elf_finish_dynamic_symbol (bfd *output_bfd, 4222 struct bfd_link_info *info, 4223 struct elf_link_hash_entry *h, 4224 Elf_Internal_Sym *sym) 4225 { 4226 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4227 return s3_bfd_score_elf_finish_dynamic_symbol (output_bfd, info, h, sym); 4228 else 4229 return s7_bfd_score_elf_finish_dynamic_symbol (output_bfd, info, h, sym); 4230 } 4231 4232 static bfd_boolean 4233 _bfd_score_elf_finish_dynamic_sections (bfd *output_bfd, 4234 struct bfd_link_info *info) 4235 { 4236 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4237 return s3_bfd_score_elf_finish_dynamic_sections (output_bfd, info); 4238 else 4239 return s7_bfd_score_elf_finish_dynamic_sections (output_bfd, info); 4240 } 4241 4242 static bfd_boolean 4243 _bfd_score_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, 4244 Elf_Internal_Shdr *hdr, 4245 asection *sec) 4246 { 4247 if (bfd_get_mach (abfd) == bfd_mach_score3) 4248 return s3_bfd_score_elf_fake_sections (abfd, hdr, sec); 4249 else 4250 return s7_bfd_score_elf_fake_sections (abfd, hdr, sec); 4251 } 4252 4253 static bfd_boolean 4254 _bfd_score_elf_section_processing (bfd *abfd ATTRIBUTE_UNUSED, Elf_Internal_Shdr *hdr) 4255 { 4256 if (bfd_get_mach (abfd) == bfd_mach_score3) 4257 return s3_bfd_score_elf_section_processing (abfd, hdr); 4258 else 4259 return s7_bfd_score_elf_section_processing (abfd, hdr); 4260 } 4261 4262 static bfd_boolean 4263 _bfd_score_elf_write_section (bfd *output_bfd, 4264 struct bfd_link_info *link_info ATTRIBUTE_UNUSED, 4265 asection *sec, bfd_byte *contents) 4266 { 4267 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4268 return s3_bfd_score_elf_write_section (output_bfd, sec, contents); 4269 else 4270 return s7_bfd_score_elf_write_section (output_bfd, sec, contents); 4271 } 4272 4273 static void 4274 _bfd_score_elf_copy_indirect_symbol (struct bfd_link_info *info, 4275 struct elf_link_hash_entry *dir, 4276 struct elf_link_hash_entry *ind) 4277 { 4278 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4279 return s3_bfd_score_elf_copy_indirect_symbol (info, dir, ind); 4280 else 4281 return s7_bfd_score_elf_copy_indirect_symbol (info, dir, ind); 4282 } 4283 4284 static void 4285 _bfd_score_elf_hide_symbol (struct bfd_link_info *info, 4286 struct elf_link_hash_entry *entry, 4287 bfd_boolean force_local) 4288 { 4289 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4290 return s3_bfd_score_elf_hide_symbol (info, entry, force_local); 4291 else 4292 return s7_bfd_score_elf_hide_symbol (info, entry, force_local); 4293 } 4294 4295 static bfd_boolean 4296 _bfd_score_elf_discard_info (bfd *abfd, struct elf_reloc_cookie *cookie, 4297 struct bfd_link_info *info) 4298 { 4299 if (bfd_get_mach (abfd) == bfd_mach_score3) 4300 return s3_bfd_score_elf_discard_info (abfd, cookie, info); 4301 else 4302 return s7_bfd_score_elf_discard_info (abfd, cookie, info); 4303 } 4304 4305 static bfd_boolean 4306 _bfd_score_elf_ignore_discarded_relocs (asection *sec) 4307 { 4308 if (bfd_get_mach (sec->owner) == bfd_mach_score3) 4309 return s3_bfd_score_elf_ignore_discarded_relocs (sec); 4310 else 4311 return s7_bfd_score_elf_ignore_discarded_relocs (sec); 4312 } 4313 4314 static asection * 4315 _bfd_score_elf_gc_mark_hook (asection *sec, 4316 struct bfd_link_info *info, 4317 Elf_Internal_Rela *rel, 4318 struct elf_link_hash_entry *h, 4319 Elf_Internal_Sym *sym) 4320 { 4321 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4322 return s3_bfd_score_elf_gc_mark_hook (sec, info, rel, h, sym); 4323 else 4324 return s7_bfd_score_elf_gc_mark_hook (sec, info, rel, h, sym); 4325 } 4326 4327 static bfd_boolean 4328 _bfd_score_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 4329 { 4330 if (bfd_get_mach (abfd) == bfd_mach_score3) 4331 return s3_bfd_score_elf_grok_prstatus (abfd, note); 4332 else 4333 return s7_bfd_score_elf_grok_prstatus (abfd, note); 4334 } 4335 4336 static bfd_boolean 4337 _bfd_score_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 4338 { 4339 if (bfd_get_mach (abfd) == bfd_mach_score3) 4340 return s3_bfd_score_elf_grok_psinfo (abfd, note); 4341 else 4342 return s7_bfd_score_elf_grok_psinfo (abfd, note); 4343 } 4344 4345 static reloc_howto_type * 4346 elf32_score_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code) 4347 { 4348 /* s3: NOTE!!! 4349 gas will call elf32_score_reloc_type_lookup, and don't write elf file. 4350 So just using score3, but we don't know ld will call this or not. 4351 If so, this way can't work. */ 4352 4353 if (score3) 4354 return s3_elf32_score_reloc_type_lookup (abfd, code); 4355 else 4356 return s7_elf32_score_reloc_type_lookup (abfd, code); 4357 } 4358 4359 /* Create a score elf linker hash table. 4360 This is a copy of _bfd_elf_link_hash_table_create() except with a 4361 different hash table entry creation function. */ 4362 4363 static struct bfd_link_hash_table * 4364 elf32_score_link_hash_table_create (bfd *abfd) 4365 { 4366 struct elf_link_hash_table *ret; 4367 bfd_size_type amt = sizeof (struct elf_link_hash_table); 4368 4369 ret = (struct elf_link_hash_table *) bfd_zmalloc (amt); 4370 if (ret == NULL) 4371 return NULL; 4372 4373 if (!_bfd_elf_link_hash_table_init (ret, abfd, score_elf_link_hash_newfunc, 4374 sizeof (struct score_elf_link_hash_entry), 4375 GENERIC_ELF_DATA)) 4376 { 4377 free (ret); 4378 return NULL; 4379 } 4380 4381 return &ret->root; 4382 } 4383 4384 static bfd_boolean 4385 elf32_score_print_private_bfd_data (bfd *abfd, void * ptr) 4386 { 4387 if (bfd_get_mach (abfd) == bfd_mach_score3) 4388 return s3_elf32_score_print_private_bfd_data (abfd, ptr); 4389 else 4390 return s7_elf32_score_print_private_bfd_data (abfd, ptr); 4391 } 4392 4393 static bfd_boolean 4394 elf32_score_merge_private_bfd_data (bfd *ibfd, bfd *obfd) 4395 { 4396 if (bfd_get_mach (obfd) == bfd_mach_score3) 4397 return s3_elf32_score_merge_private_bfd_data (ibfd, obfd); 4398 else 4399 return s7_elf32_score_merge_private_bfd_data (ibfd, obfd); 4400 } 4401 4402 static bfd_boolean 4403 elf32_score_new_section_hook (bfd *abfd, asection *sec) 4404 { 4405 if (bfd_get_mach (abfd) == bfd_mach_score3) 4406 return s3_elf32_score_new_section_hook (abfd, sec); 4407 else 4408 return s7_elf32_score_new_section_hook (abfd, sec); 4409 } 4410 4411 4412 /* s3_s7: don't need to split. */ 4413 4414 /* Set the right machine number. */ 4415 static bfd_boolean 4416 _bfd_score_elf_score_object_p (bfd * abfd) 4417 { 4418 int e_set = bfd_mach_score7; 4419 4420 if (elf_elfheader (abfd)->e_machine == EM_SCORE) 4421 { 4422 int e_mach = elf_elfheader (abfd)->e_flags & EF_SCORE_MACH & EF_OMIT_PIC_FIXDD; 4423 switch (e_mach) 4424 { 4425 /* Set default target is score7. */ 4426 default: 4427 case E_SCORE_MACH_SCORE7: 4428 e_set = bfd_mach_score7; 4429 break; 4430 4431 case E_SCORE_MACH_SCORE3: 4432 e_set = bfd_mach_score3; 4433 break; 4434 } 4435 } 4436 4437 return bfd_default_set_arch_mach (abfd, bfd_arch_score, e_set); 4438 } 4439 4440 bfd_boolean 4441 _bfd_score_elf_common_definition (Elf_Internal_Sym *sym) 4442 { 4443 return (sym->st_shndx == SHN_COMMON || sym->st_shndx == SHN_SCORE_SCOMMON); 4444 } 4445 4446 /*****************************************************************************/ 4447 4448 4449 #define USE_REL 1 4450 #define TARGET_LITTLE_SYM score_elf32_le_vec 4451 #define TARGET_LITTLE_NAME "elf32-littlescore" 4452 #define TARGET_BIG_SYM score_elf32_be_vec 4453 #define TARGET_BIG_NAME "elf32-bigscore" 4454 #define ELF_ARCH bfd_arch_score 4455 #define ELF_MACHINE_CODE EM_SCORE 4456 #define ELF_MACHINE_ALT1 EM_SCORE_OLD 4457 #define ELF_MAXPAGESIZE 0x8000 4458 4459 #define elf_info_to_howto 0 4460 #define elf_info_to_howto_rel _bfd_score_info_to_howto 4461 #define elf_backend_relocate_section _bfd_score_elf_relocate_section 4462 #define elf_backend_check_relocs _bfd_score_elf_check_relocs 4463 #define elf_backend_add_symbol_hook _bfd_score_elf_add_symbol_hook 4464 #define elf_backend_symbol_processing _bfd_score_elf_symbol_processing 4465 #define elf_backend_link_output_symbol_hook \ 4466 _bfd_score_elf_link_output_symbol_hook 4467 #define elf_backend_section_from_bfd_section \ 4468 _bfd_score_elf_section_from_bfd_section 4469 #define elf_backend_adjust_dynamic_symbol \ 4470 _bfd_score_elf_adjust_dynamic_symbol 4471 #define elf_backend_always_size_sections \ 4472 _bfd_score_elf_always_size_sections 4473 #define elf_backend_size_dynamic_sections \ 4474 _bfd_score_elf_size_dynamic_sections 4475 #define elf_backend_omit_section_dynsym \ 4476 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) 4477 #define elf_backend_create_dynamic_sections \ 4478 _bfd_score_elf_create_dynamic_sections 4479 #define elf_backend_finish_dynamic_symbol \ 4480 _bfd_score_elf_finish_dynamic_symbol 4481 #define elf_backend_finish_dynamic_sections \ 4482 _bfd_score_elf_finish_dynamic_sections 4483 #define elf_backend_fake_sections _bfd_score_elf_fake_sections 4484 #define elf_backend_section_processing _bfd_score_elf_section_processing 4485 #define elf_backend_write_section _bfd_score_elf_write_section 4486 #define elf_backend_copy_indirect_symbol _bfd_score_elf_copy_indirect_symbol 4487 #define elf_backend_hide_symbol _bfd_score_elf_hide_symbol 4488 #define elf_backend_discard_info _bfd_score_elf_discard_info 4489 #define elf_backend_ignore_discarded_relocs \ 4490 _bfd_score_elf_ignore_discarded_relocs 4491 #define elf_backend_gc_mark_hook _bfd_score_elf_gc_mark_hook 4492 #define elf_backend_grok_prstatus _bfd_score_elf_grok_prstatus 4493 #define elf_backend_grok_psinfo _bfd_score_elf_grok_psinfo 4494 #define elf_backend_can_gc_sections 1 4495 #define elf_backend_want_plt_sym 0 4496 #define elf_backend_got_header_size (4 * SCORE_RESERVED_GOTNO) 4497 #define elf_backend_plt_header_size 0 4498 #define elf_backend_collect TRUE 4499 #define elf_backend_type_change_ok TRUE 4500 #define elf_backend_object_p _bfd_score_elf_score_object_p 4501 4502 #define bfd_elf32_bfd_reloc_type_lookup elf32_score_reloc_type_lookup 4503 #define bfd_elf32_bfd_reloc_name_lookup \ 4504 elf32_score_reloc_name_lookup 4505 #define bfd_elf32_bfd_link_hash_table_create elf32_score_link_hash_table_create 4506 #define bfd_elf32_bfd_print_private_bfd_data elf32_score_print_private_bfd_data 4507 #define bfd_elf32_bfd_merge_private_bfd_data elf32_score_merge_private_bfd_data 4508 #define bfd_elf32_new_section_hook elf32_score_new_section_hook 4509 4510 #include "elf32-target.h" 4511
