1 /* 32-bit ELF support for S+core. 2 Copyright (C) 2006-2018 Free Software Foundation, Inc. 3 Contributed by 4 Brain.lin (brain.lin@sunplusct.com) 5 Mei Ligang (ligang@sunnorth.com.cn) 6 Pei-Lin Tsai (pltsai@sunplus.com) 7 8 This file is part of BFD, the Binary File Descriptor library. 9 10 This program is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 3 of the License, or 13 (at your option) any later version. 14 15 This program is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with this program; if not, write to the Free Software 22 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 23 MA 02110-1301, USA. */ 24 25 #include "sysdep.h" 26 #include "bfd.h" 27 #include "libbfd.h" 28 #include "libiberty.h" 29 #include "elf-bfd.h" 30 #include "elf/score.h" 31 #include "elf/common.h" 32 #include "elf/internal.h" 33 #include "hashtab.h" 34 #include "elf32-score.h" 35 36 37 int score3 = 0; 38 int score7 = 1; 39 40 /* The SCORE ELF linker needs additional information for each symbol in 41 the global hash table. */ 42 struct score_elf_link_hash_entry 43 { 44 struct elf_link_hash_entry root; 45 46 /* Number of R_SCORE_ABS32, R_SCORE_REL32 relocs against this symbol. */ 47 unsigned int possibly_dynamic_relocs; 48 49 /* If the R_SCORE_ABS32, R_SCORE_REL32 reloc is against a readonly section. */ 50 bfd_boolean readonly_reloc; 51 52 /* We must not create a stub for a symbol that has relocations related to 53 taking the function's address, i.e. any but R_SCORE_CALL15 ones. */ 54 bfd_boolean no_fn_stub; 55 56 /* Are we forced local? This will only be set if we have converted 57 the initial global GOT entry to a local GOT entry. */ 58 bfd_boolean forced_local; 59 }; 60 61 /* Traverse a score ELF linker hash table. */ 62 #define score_elf_link_hash_traverse(table, func, info) \ 63 (elf_link_hash_traverse \ 64 ((table), \ 65 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ 66 (info))) 67 68 /* This structure is used to hold .got entries while estimating got sizes. */ 69 struct score_got_entry 70 { 71 /* The input bfd in which the symbol is defined. */ 72 bfd *abfd; 73 /* The index of the symbol, as stored in the relocation r_info, if 74 we have a local symbol; -1 otherwise. */ 75 long symndx; 76 union 77 { 78 /* If abfd == NULL, an address that must be stored in the got. */ 79 bfd_vma address; 80 /* If abfd != NULL && symndx != -1, the addend of the relocation 81 that should be added to the symbol value. */ 82 bfd_vma addend; 83 /* If abfd != NULL && symndx == -1, the hash table entry 84 corresponding to a global symbol in the got (or, local, if 85 h->forced_local). */ 86 struct score_elf_link_hash_entry *h; 87 } d; 88 89 /* The offset from the beginning of the .got section to the entry 90 corresponding to this symbol+addend. If it's a global symbol 91 whose offset is yet to be decided, it's going to be -1. */ 92 long gotidx; 93 }; 94 95 /* This structure is passed to score_elf_sort_hash_table_f when sorting 96 the dynamic symbols. */ 97 98 struct score_elf_hash_sort_data 99 { 100 /* The symbol in the global GOT with the lowest dynamic symbol table index. */ 101 struct elf_link_hash_entry *low; 102 /* The least dynamic symbol table index corresponding to a symbol with a GOT entry. */ 103 long min_got_dynindx; 104 /* The greatest dynamic symbol table index corresponding to a symbol 105 with a GOT entry that is not referenced (e.g., a dynamic symbol 106 with dynamic relocations pointing to it from non-primary GOTs). */ 107 long max_unref_got_dynindx; 108 /* The greatest dynamic symbol table index not corresponding to a 109 symbol without a GOT entry. */ 110 long max_non_got_dynindx; 111 }; 112 113 struct score_got_info 114 { 115 /* The global symbol in the GOT with the lowest index in the dynamic 116 symbol table. */ 117 struct elf_link_hash_entry *global_gotsym; 118 /* The number of global .got entries. */ 119 unsigned int global_gotno; 120 /* The number of local .got entries. */ 121 unsigned int local_gotno; 122 /* The number of local .got entries we have used. */ 123 unsigned int assigned_gotno; 124 /* A hash table holding members of the got. */ 125 struct htab *got_entries; 126 /* In multi-got links, a pointer to the next got (err, rather, most 127 of the time, it points to the previous got). */ 128 struct score_got_info *next; 129 }; 130 131 /* A structure used to count GOT entries, for GOT entry or ELF symbol table traversal. */ 132 struct _score_elf_section_data 133 { 134 struct bfd_elf_section_data elf; 135 union 136 { 137 struct score_got_info *got_info; 138 bfd_byte *tdata; 139 } 140 u; 141 }; 142 143 #define score_elf_section_data(sec) \ 144 ((struct _score_elf_section_data *) elf_section_data (sec)) 145 146 /* The size of a symbol-table entry. */ 147 #define SCORE_ELF_SYM_SIZE(abfd) \ 148 (get_elf_backend_data (abfd)->s->sizeof_sym) 149 150 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value 151 from smaller values. Start with zero, widen, *then* decrement. */ 152 #define MINUS_ONE (((bfd_vma)0) - 1) 153 #define MINUS_TWO (((bfd_vma)0) - 2) 154 155 #define PDR_SIZE 32 156 157 158 /* The number of local .got entries we reserve. */ 159 #define SCORE_RESERVED_GOTNO (2) 160 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" 161 162 /* The offset of $gp from the beginning of the .got section. */ 163 #define ELF_SCORE_GP_OFFSET(abfd) (0x3ff0) 164 /* The maximum size of the GOT for it to be addressable using 15-bit offsets from $gp. */ 165 #define SCORE_ELF_GOT_MAX_SIZE(abfd) (ELF_SCORE_GP_OFFSET(abfd) + 0x3fff) 166 167 #define SCORE_ELF_STUB_SECTION_NAME (".SCORE.stub") 168 #define SCORE_FUNCTION_STUB_SIZE (16) 169 170 #define STUB_LW 0xc3bcc010 /* lw r29, [r28, -0x3ff0] */ 171 #define STUB_MOVE 0x8363bc56 /* mv r27, r3 */ 172 #define STUB_LI16 0x87548000 /* ori r26, .dynsym_index */ 173 #define STUB_BRL 0x801dbc09 /* brl r29 */ 174 175 #define SCORE_ELF_GOT_SIZE(abfd) \ 176 (get_elf_backend_data (abfd)->s->arch_size / 8) 177 178 #define SCORE_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \ 179 (_bfd_elf_add_dynamic_entry (info, (bfd_vma) tag, (bfd_vma) val)) 180 181 /* The size of an external dynamic table entry. */ 182 #define SCORE_ELF_DYN_SIZE(abfd) \ 183 (get_elf_backend_data (abfd)->s->sizeof_dyn) 184 185 /* The size of an external REL relocation. */ 186 #define SCORE_ELF_REL_SIZE(abfd) \ 187 (get_elf_backend_data (abfd)->s->sizeof_rel) 188 189 /* The default alignment for sections, as a power of two. */ 190 #define SCORE_ELF_LOG_FILE_ALIGN(abfd)\ 191 (get_elf_backend_data (abfd)->s->log_file_align) 192 193 static bfd_byte *hi16_rel_addr; 194 195 /* This will be used when we sort the dynamic relocation records. */ 196 static bfd *reldyn_sorting_bfd; 197 198 /* SCORE ELF uses two common sections. One is the usual one, and the 199 other is for small objects. All the small objects are kept 200 together, and then referenced via the gp pointer, which yields 201 faster assembler code. This is what we use for the small common 202 section. This approach is copied from ecoff.c. */ 203 static asection score_elf_scom_section; 204 static asymbol score_elf_scom_symbol; 205 static asymbol *score_elf_scom_symbol_ptr; 206 207 static bfd_vma 208 score_bfd_get_16 (bfd *abfd, const void *data) 209 { 210 return bfd_get_16 (abfd, data); 211 } 212 213 static bfd_vma 214 score3_bfd_getl32 (const void *p) 215 { 216 const bfd_byte *addr = p; 217 unsigned long v; 218 219 v = (unsigned long) addr[2]; 220 v |= (unsigned long) addr[3] << 8; 221 v |= (unsigned long) addr[0] << 16; 222 v |= (unsigned long) addr[1] << 24; 223 return v; 224 } 225 226 static bfd_vma 227 score3_bfd_getl48 (const void *p) 228 { 229 const bfd_byte *addr = p; 230 bfd_uint64_t v; 231 232 v = (bfd_uint64_t) addr[4]; 233 v |= (bfd_uint64_t) addr[5] << 8; 234 v |= (bfd_uint64_t) addr[2] << 16; 235 v |= (bfd_uint64_t) addr[3] << 24; 236 v |= (bfd_uint64_t) addr[0] << 32; 237 v |= (bfd_uint64_t) addr[1] << 40; 238 return v; 239 } 240 241 static bfd_vma 242 score_bfd_get_32 (bfd *abfd, const void *data) 243 { 244 if (/* score3 && */ abfd->xvec->byteorder == BFD_ENDIAN_LITTLE) 245 return score3_bfd_getl32 (data); 246 else 247 return bfd_get_32 (abfd, data); 248 } 249 250 static bfd_vma 251 score_bfd_get_48 (bfd *abfd, const void *p) 252 { 253 if (/* score3 && */ abfd->xvec->byteorder == BFD_ENDIAN_LITTLE) 254 return score3_bfd_getl48 (p); 255 else 256 return bfd_get_bits (p, 48, 1); 257 } 258 259 static void 260 score_bfd_put_16 (bfd *abfd, bfd_vma addr, void *data) 261 { 262 return bfd_put_16 (abfd, addr, data); 263 } 264 265 static void 266 score3_bfd_putl32 (bfd_vma data, void *p) 267 { 268 bfd_byte *addr = p; 269 addr[0] = (data >> 16) & 0xff; 270 addr[1] = (data >> 24) & 0xff; 271 addr[2] = data & 0xff; 272 addr[3] = (data >> 8) & 0xff; 273 } 274 275 static void 276 score3_bfd_putl48 (bfd_vma data, void *p) 277 { 278 bfd_byte *addr = p; 279 addr[0] = (data >> 32) & 0xff; 280 addr[1] = (data >> 40) & 0xff; 281 addr[2] = (data >> 16) & 0xff; 282 addr[3] = (data >> 24) & 0xff; 283 addr[4] = data & 0xff; 284 addr[5] = (data >> 8) & 0xff; 285 } 286 287 static void 288 score_bfd_put_32 (bfd *abfd, bfd_vma addr, void *data) 289 { 290 if (/* score3 && */ abfd->xvec->byteorder == BFD_ENDIAN_LITTLE) 291 return score3_bfd_putl32 (addr, data); 292 else 293 return bfd_put_32 (abfd, addr, data); 294 } 295 296 static void 297 score_bfd_put_48 (bfd *abfd, bfd_vma val, void *p) 298 { 299 if (/* score3 && */ abfd->xvec->byteorder == BFD_ENDIAN_LITTLE) 300 return score3_bfd_putl48 (val, p); 301 else 302 return bfd_put_bits (val, p, 48, 1); 303 } 304 305 static bfd_reloc_status_type 306 score_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED, 307 arelent *reloc_entry, 308 asymbol *symbol ATTRIBUTE_UNUSED, 309 void * data, 310 asection *input_section ATTRIBUTE_UNUSED, 311 bfd *output_bfd ATTRIBUTE_UNUSED, 312 char **error_message ATTRIBUTE_UNUSED) 313 { 314 hi16_rel_addr = (bfd_byte *) data + reloc_entry->address; 315 return bfd_reloc_ok; 316 } 317 318 static bfd_reloc_status_type 319 score_elf_lo16_reloc (bfd *abfd, 320 arelent *reloc_entry, 321 asymbol *symbol ATTRIBUTE_UNUSED, 322 void * data, 323 asection *input_section, 324 bfd *output_bfd ATTRIBUTE_UNUSED, 325 char **error_message ATTRIBUTE_UNUSED) 326 { 327 bfd_vma addend = 0, offset = 0; 328 unsigned long val; 329 unsigned long hi16_offset, hi16_value, uvalue; 330 331 hi16_value = score_bfd_get_32 (abfd, hi16_rel_addr); 332 hi16_offset = ((((hi16_value >> 16) & 0x3) << 15) | (hi16_value & 0x7fff)) >> 1; 333 addend = score_bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 334 offset = ((((addend >> 16) & 0x3) << 15) | (addend & 0x7fff)) >> 1; 335 val = reloc_entry->addend; 336 if (reloc_entry->address > input_section->size) 337 return bfd_reloc_outofrange; 338 uvalue = ((hi16_offset << 16) | (offset & 0xffff)) + val; 339 hi16_offset = (uvalue >> 16) << 1; 340 hi16_value = (hi16_value & ~0x37fff) | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000); 341 score_bfd_put_32 (abfd, hi16_value, hi16_rel_addr); 342 offset = (uvalue & 0xffff) << 1; 343 addend = (addend & ~0x37fff) | (offset & 0x7fff) | ((offset << 1) & 0x30000); 344 score_bfd_put_32 (abfd, addend, (bfd_byte *) data + reloc_entry->address); 345 return bfd_reloc_ok; 346 } 347 348 /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a 349 dangerous relocation. */ 350 351 static bfd_boolean 352 score_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp) 353 { 354 unsigned int count; 355 asymbol **sym; 356 unsigned int i; 357 358 /* If we've already figured out what GP will be, just return it. */ 359 *pgp = _bfd_get_gp_value (output_bfd); 360 if (*pgp) 361 return TRUE; 362 363 count = bfd_get_symcount (output_bfd); 364 sym = bfd_get_outsymbols (output_bfd); 365 366 /* The linker script will have created a symbol named `_gp' with the 367 appropriate value. */ 368 if (sym == NULL) 369 i = count; 370 else 371 { 372 for (i = 0; i < count; i++, sym++) 373 { 374 const char *name; 375 376 name = bfd_asymbol_name (*sym); 377 if (*name == '_' && strcmp (name, "_gp") == 0) 378 { 379 *pgp = bfd_asymbol_value (*sym); 380 _bfd_set_gp_value (output_bfd, *pgp); 381 break; 382 } 383 } 384 } 385 386 if (i >= count) 387 { 388 /* Only get the error once. */ 389 *pgp = 4; 390 _bfd_set_gp_value (output_bfd, *pgp); 391 return FALSE; 392 } 393 394 return TRUE; 395 } 396 397 /* We have to figure out the gp value, so that we can adjust the 398 symbol value correctly. We look up the symbol _gp in the output 399 BFD. If we can't find it, we're stuck. We cache it in the ELF 400 target data. We don't need to adjust the symbol value for an 401 external symbol if we are producing relocatable output. */ 402 static bfd_reloc_status_type 403 score_elf_final_gp (bfd *output_bfd, 404 asymbol *symbol, 405 bfd_boolean relocatable, 406 char **error_message, 407 bfd_vma *pgp) 408 { 409 if (bfd_is_und_section (symbol->section) 410 && ! relocatable) 411 { 412 *pgp = 0; 413 return bfd_reloc_undefined; 414 } 415 416 *pgp = _bfd_get_gp_value (output_bfd); 417 if (*pgp == 0 418 && (! relocatable 419 || (symbol->flags & BSF_SECTION_SYM) != 0)) 420 { 421 if (relocatable) 422 { 423 /* Make up a value. */ 424 *pgp = symbol->section->output_section->vma + 0x4000; 425 _bfd_set_gp_value (output_bfd, *pgp); 426 } 427 else if (!score_elf_assign_gp (output_bfd, pgp)) 428 { 429 *error_message = 430 (char *) _("GP relative relocation when _gp not defined"); 431 return bfd_reloc_dangerous; 432 } 433 } 434 435 return bfd_reloc_ok; 436 } 437 438 static bfd_reloc_status_type 439 score_elf_gprel15_with_gp (bfd *abfd, 440 asymbol *symbol, 441 arelent *reloc_entry, 442 asection *input_section, 443 bfd_boolean relocateable, 444 void * data, 445 bfd_vma gp ATTRIBUTE_UNUSED) 446 { 447 bfd_vma relocation; 448 unsigned long insn; 449 450 if (bfd_is_com_section (symbol->section)) 451 relocation = 0; 452 else 453 relocation = symbol->value; 454 455 relocation += symbol->section->output_section->vma; 456 relocation += symbol->section->output_offset; 457 if (reloc_entry->address > input_section->size) 458 return bfd_reloc_outofrange; 459 460 insn = score_bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 461 if (((reloc_entry->addend & 0xffffc000) != 0) 462 && ((reloc_entry->addend & 0xffffc000) != 0xffffc000)) 463 return bfd_reloc_overflow; 464 465 insn = (insn & ~0x7fff) | (reloc_entry->addend & 0x7fff); 466 score_bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); 467 if (relocateable) 468 reloc_entry->address += input_section->output_offset; 469 470 return bfd_reloc_ok; 471 } 472 473 static bfd_reloc_status_type 474 gprel32_with_gp (bfd *abfd, asymbol *symbol, arelent *reloc_entry, 475 asection *input_section, bfd_boolean relocatable, 476 void *data, bfd_vma gp) 477 { 478 bfd_vma relocation; 479 bfd_vma val; 480 481 if (bfd_is_com_section (symbol->section)) 482 relocation = 0; 483 else 484 relocation = symbol->value; 485 486 relocation += symbol->section->output_section->vma; 487 relocation += symbol->section->output_offset; 488 489 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) 490 return bfd_reloc_outofrange; 491 492 /* Set val to the offset into the section or symbol. */ 493 val = reloc_entry->addend; 494 495 if (reloc_entry->howto->partial_inplace) 496 val += score_bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 497 498 /* Adjust val for the final section location and GP value. If we 499 are producing relocatable output, we don't want to do this for 500 an external symbol. */ 501 if (! relocatable 502 || (symbol->flags & BSF_SECTION_SYM) != 0) 503 val += relocation - gp; 504 505 if (reloc_entry->howto->partial_inplace) 506 score_bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address); 507 else 508 reloc_entry->addend = val; 509 510 if (relocatable) 511 reloc_entry->address += input_section->output_offset; 512 513 return bfd_reloc_ok; 514 } 515 516 static bfd_reloc_status_type 517 score_elf_gprel15_reloc (bfd *abfd, 518 arelent *reloc_entry, 519 asymbol *symbol, 520 void * data, 521 asection *input_section, 522 bfd *output_bfd, 523 char **error_message) 524 { 525 bfd_boolean relocateable; 526 bfd_reloc_status_type ret; 527 bfd_vma gp; 528 529 if (output_bfd != NULL 530 && (symbol->flags & BSF_SECTION_SYM) == 0 && reloc_entry->addend == 0) 531 { 532 reloc_entry->address += input_section->output_offset; 533 return bfd_reloc_ok; 534 } 535 if (output_bfd != NULL) 536 relocateable = TRUE; 537 else 538 { 539 relocateable = FALSE; 540 output_bfd = symbol->section->output_section->owner; 541 } 542 543 ret = score_elf_final_gp (output_bfd, symbol, relocateable, error_message, &gp); 544 if (ret != bfd_reloc_ok) 545 return ret; 546 547 return score_elf_gprel15_with_gp (abfd, symbol, reloc_entry, 548 input_section, relocateable, data, gp); 549 } 550 551 /* Do a R_SCORE_GPREL32 relocation. This is a 32 bit value which must 552 become the offset from the gp register. */ 553 554 static bfd_reloc_status_type 555 score_elf_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 556 void *data, asection *input_section, bfd *output_bfd, 557 char **error_message) 558 { 559 bfd_boolean relocatable; 560 bfd_reloc_status_type ret; 561 bfd_vma gp; 562 563 /* R_SCORE_GPREL32 relocations are defined for local symbols only. */ 564 if (output_bfd != NULL 565 && (symbol->flags & BSF_SECTION_SYM) == 0 566 && (symbol->flags & BSF_LOCAL) != 0) 567 { 568 *error_message = (char *) 569 _("32bits gp relative relocation occurs for an external symbol"); 570 return bfd_reloc_outofrange; 571 } 572 573 if (output_bfd != NULL) 574 relocatable = TRUE; 575 else 576 { 577 relocatable = FALSE; 578 output_bfd = symbol->section->output_section->owner; 579 } 580 581 ret = score_elf_final_gp (output_bfd, symbol, relocatable, error_message, &gp); 582 if (ret != bfd_reloc_ok) 583 return ret; 584 585 gp = 0; 586 return gprel32_with_gp (abfd, symbol, reloc_entry, input_section, 587 relocatable, data, gp); 588 } 589 590 /* A howto special_function for R_SCORE_GOT15 relocations. This is just 591 like any other 16-bit relocation when applied to global symbols, but is 592 treated in the same as R_SCORE_HI16 when applied to local symbols. */ 593 static bfd_reloc_status_type 594 score_elf_got15_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 595 void *data, asection *input_section, 596 bfd *output_bfd, char **error_message) 597 { 598 if ((symbol->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 599 || bfd_is_und_section (bfd_get_section (symbol)) 600 || bfd_is_com_section (bfd_get_section (symbol))) 601 /* The relocation is against a global symbol. */ 602 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, 603 input_section, output_bfd, 604 error_message); 605 606 return score_elf_hi16_reloc (abfd, reloc_entry, symbol, data, 607 input_section, output_bfd, error_message); 608 } 609 610 static bfd_reloc_status_type 611 score_elf_got_lo16_reloc (bfd *abfd, 612 arelent *reloc_entry, 613 asymbol *symbol ATTRIBUTE_UNUSED, 614 void * data, 615 asection *input_section, 616 bfd *output_bfd ATTRIBUTE_UNUSED, 617 char **error_message ATTRIBUTE_UNUSED) 618 { 619 bfd_vma addend = 0, offset = 0; 620 signed long val; 621 signed long hi16_offset, hi16_value, uvalue; 622 623 hi16_value = score_bfd_get_32 (abfd, hi16_rel_addr); 624 hi16_offset = ((((hi16_value >> 16) & 0x3) << 15) | (hi16_value & 0x7fff)) >> 1; 625 addend = score_bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 626 offset = ((((addend >> 16) & 0x3) << 15) | (addend & 0x7fff)) >> 1; 627 val = reloc_entry->addend; 628 if (reloc_entry->address > input_section->size) 629 return bfd_reloc_outofrange; 630 uvalue = ((hi16_offset << 16) | (offset & 0xffff)) + val; 631 if ((uvalue > -0x8000) && (uvalue < 0x7fff)) 632 hi16_offset = 0; 633 else 634 hi16_offset = (uvalue >> 16) & 0x7fff; 635 hi16_value = (hi16_value & ~0x37fff) | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000); 636 score_bfd_put_32 (abfd, hi16_value, hi16_rel_addr); 637 offset = (uvalue & 0xffff) << 1; 638 addend = (addend & ~0x37fff) | (offset & 0x7fff) | ((offset << 1) & 0x30000); 639 score_bfd_put_32 (abfd, addend, (bfd_byte *) data + reloc_entry->address); 640 return bfd_reloc_ok; 641 } 642 643 static reloc_howto_type elf32_score_howto_table[] = 644 { 645 /* No relocation. */ 646 HOWTO (R_SCORE_NONE, /* type */ 647 0, /* rightshift */ 648 3, /* size (0 = byte, 1 = short, 2 = long) */ 649 0, /* bitsize */ 650 FALSE, /* pc_relative */ 651 0, /* bitpos */ 652 complain_overflow_dont,/* complain_on_overflow */ 653 bfd_elf_generic_reloc, /* special_function */ 654 "R_SCORE_NONE", /* name */ 655 FALSE, /* partial_inplace */ 656 0, /* src_mask */ 657 0, /* dst_mask */ 658 FALSE), /* pcrel_offset */ 659 660 /* R_SCORE_HI16 */ 661 HOWTO (R_SCORE_HI16, /* type */ 662 0, /* rightshift */ 663 2, /* size (0 = byte, 1 = short, 2 = long) */ 664 16, /* bitsize */ 665 FALSE, /* pc_relative */ 666 1, /* bitpos */ 667 complain_overflow_dont,/* complain_on_overflow */ 668 score_elf_hi16_reloc, /* special_function */ 669 "R_SCORE_HI16", /* name */ 670 TRUE, /* partial_inplace */ 671 0x37fff, /* src_mask */ 672 0x37fff, /* dst_mask */ 673 FALSE), /* pcrel_offset */ 674 675 /* R_SCORE_LO16 */ 676 HOWTO (R_SCORE_LO16, /* type */ 677 0, /* rightshift */ 678 2, /* size (0 = byte, 1 = short, 2 = long) */ 679 16, /* bitsize */ 680 FALSE, /* pc_relative */ 681 1, /* bitpos */ 682 complain_overflow_dont,/* complain_on_overflow */ 683 score_elf_lo16_reloc, /* special_function */ 684 "R_SCORE_LO16", /* name */ 685 TRUE, /* partial_inplace */ 686 0x37fff, /* src_mask */ 687 0x37fff, /* dst_mask */ 688 FALSE), /* pcrel_offset */ 689 690 /* R_SCORE_BCMP */ 691 HOWTO (R_SCORE_BCMP, /* type */ 692 1, /* rightshift */ 693 2, /* size (0 = byte, 1 = short, 2 = long) */ 694 16, /* bitsize */ 695 TRUE, /* pc_relative */ 696 1, /* bitpos */ 697 complain_overflow_dont,/* complain_on_overflow */ 698 bfd_elf_generic_reloc, /* special_function */ 699 "R_SCORE_BCMP", /* name */ 700 FALSE, /* partial_inplace */ 701 0x03e00381, /* src_mask */ 702 0x03e00381, /* dst_mask */ 703 FALSE), /* pcrel_offset */ 704 705 /*R_SCORE_24 */ 706 HOWTO (R_SCORE_24, /* type */ 707 1, /* rightshift */ 708 2, /* size (0 = byte, 1 = short, 2 = long) */ 709 24, /* bitsize */ 710 FALSE, /* pc_relative */ 711 1, /* bitpos */ 712 complain_overflow_dont,/* complain_on_overflow */ 713 bfd_elf_generic_reloc, /* special_function */ 714 "R_SCORE_24", /* name */ 715 FALSE, /* partial_inplace */ 716 0x3ff7fff, /* src_mask */ 717 0x3ff7fff, /* dst_mask */ 718 FALSE), /* pcrel_offset */ 719 720 /*R_SCORE_PC19 */ 721 HOWTO (R_SCORE_PC19, /* type */ 722 1, /* rightshift */ 723 2, /* size (0 = byte, 1 = short, 2 = long) */ 724 19, /* bitsize */ 725 TRUE, /* pc_relative */ 726 1, /* bitpos */ 727 complain_overflow_dont,/* complain_on_overflow */ 728 bfd_elf_generic_reloc, /* special_function */ 729 "R_SCORE_PC19", /* name */ 730 FALSE, /* partial_inplace */ 731 0x3ff03fe, /* src_mask */ 732 0x3ff03fe, /* dst_mask */ 733 FALSE), /* pcrel_offset */ 734 735 /*R_SCORE16_11 */ 736 HOWTO (R_SCORE16_11, /* type */ 737 1, /* rightshift */ 738 1, /* size (0 = byte, 1 = short, 2 = long) */ 739 11, /* bitsize */ 740 FALSE, /* pc_relative */ 741 1, /* bitpos */ 742 complain_overflow_dont,/* complain_on_overflow */ 743 bfd_elf_generic_reloc, /* special_function */ 744 "R_SCORE16_11", /* name */ 745 FALSE, /* partial_inplace */ 746 0x000000ffe, /* src_mask */ 747 0x000000ffe, /* dst_mask */ 748 FALSE), /* pcrel_offset */ 749 750 /* R_SCORE16_PC8 */ 751 HOWTO (R_SCORE16_PC8, /* type */ 752 1, /* rightshift */ 753 1, /* size (0 = byte, 1 = short, 2 = long) */ 754 9, /* bitsize */ 755 TRUE, /* pc_relative */ 756 0, /* bitpos */ 757 complain_overflow_dont,/* complain_on_overflow */ 758 bfd_elf_generic_reloc, /* special_function */ 759 "R_SCORE16_PC8", /* name */ 760 FALSE, /* partial_inplace */ 761 0x000001ff, /* src_mask */ 762 0x000001ff, /* dst_mask */ 763 FALSE), /* pcrel_offset */ 764 765 /* 32 bit absolute */ 766 HOWTO (R_SCORE_ABS32, /* type 8 */ 767 0, /* rightshift */ 768 2, /* size (0 = byte, 1 = short, 2 = long) */ 769 32, /* bitsize */ 770 FALSE, /* pc_relative */ 771 0, /* bitpos */ 772 complain_overflow_bitfield, /* complain_on_overflow */ 773 bfd_elf_generic_reloc, /* special_function */ 774 "R_SCORE_ABS32", /* name */ 775 FALSE, /* partial_inplace */ 776 0xffffffff, /* src_mask */ 777 0xffffffff, /* dst_mask */ 778 FALSE), /* pcrel_offset */ 779 780 /* 16 bit absolute */ 781 HOWTO (R_SCORE_ABS16, /* type 11 */ 782 0, /* rightshift */ 783 1, /* size (0 = byte, 1 = short, 2 = long) */ 784 16, /* bitsize */ 785 FALSE, /* pc_relative */ 786 0, /* bitpos */ 787 complain_overflow_bitfield, /* complain_on_overflow */ 788 bfd_elf_generic_reloc, /* special_function */ 789 "R_SCORE_ABS16", /* name */ 790 FALSE, /* partial_inplace */ 791 0x0000ffff, /* src_mask */ 792 0x0000ffff, /* dst_mask */ 793 FALSE), /* pcrel_offset */ 794 795 /* R_SCORE_DUMMY2 */ 796 HOWTO (R_SCORE_DUMMY2, /* type */ 797 0, /* rightshift */ 798 2, /* size (0 = byte, 1 = short, 2 = long) */ 799 16, /* bitsize */ 800 FALSE, /* pc_relative */ 801 0, /* bitpos */ 802 complain_overflow_dont,/* complain_on_overflow */ 803 bfd_elf_generic_reloc, /* special_function */ 804 "R_SCORE_DUMMY2", /* name */ 805 TRUE, /* partial_inplace */ 806 0x00007fff, /* src_mask */ 807 0x00007fff, /* dst_mask */ 808 FALSE), /* pcrel_offset */ 809 810 /* R_SCORE_GP15 */ 811 HOWTO (R_SCORE_GP15, /* type */ 812 0, /* rightshift */ 813 2, /* size (0 = byte, 1 = short, 2 = long) */ 814 16, /* bitsize */ 815 FALSE, /* pc_relative */ 816 0, /* bitpos */ 817 complain_overflow_dont,/* complain_on_overflow */ 818 score_elf_gprel15_reloc,/* special_function */ 819 "R_SCORE_GP15", /* name */ 820 TRUE, /* partial_inplace */ 821 0x00007fff, /* src_mask */ 822 0x00007fff, /* dst_mask */ 823 FALSE), /* pcrel_offset */ 824 825 /* GNU extension to record C++ vtable hierarchy. */ 826 HOWTO (R_SCORE_GNU_VTINHERIT, /* type */ 827 0, /* rightshift */ 828 2, /* size (0 = byte, 1 = short, 2 = long) */ 829 0, /* bitsize */ 830 FALSE, /* pc_relative */ 831 0, /* bitpos */ 832 complain_overflow_dont,/* complain_on_overflow */ 833 NULL, /* special_function */ 834 "R_SCORE_GNU_VTINHERIT", /* name */ 835 FALSE, /* partial_inplace */ 836 0, /* src_mask */ 837 0, /* dst_mask */ 838 FALSE), /* pcrel_offset */ 839 840 /* GNU extension to record C++ vtable member usage */ 841 HOWTO (R_SCORE_GNU_VTENTRY, /* type */ 842 0, /* rightshift */ 843 2, /* size (0 = byte, 1 = short, 2 = long) */ 844 0, /* bitsize */ 845 FALSE, /* pc_relative */ 846 0, /* bitpos */ 847 complain_overflow_dont,/* complain_on_overflow */ 848 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 849 "R_SCORE_GNU_VTENTRY", /* name */ 850 FALSE, /* partial_inplace */ 851 0, /* src_mask */ 852 0, /* dst_mask */ 853 FALSE), /* pcrel_offset */ 854 855 /* Reference to global offset table. */ 856 HOWTO (R_SCORE_GOT15, /* type */ 857 0, /* rightshift */ 858 2, /* size (0 = byte, 1 = short, 2 = long) */ 859 16, /* bitsize */ 860 FALSE, /* pc_relative */ 861 0, /* bitpos */ 862 complain_overflow_signed, /* complain_on_overflow */ 863 score_elf_got15_reloc, /* special_function */ 864 "R_SCORE_GOT15", /* name */ 865 TRUE, /* partial_inplace */ 866 0x00007fff, /* src_mask */ 867 0x00007fff, /* dst_mask */ 868 FALSE), /* pcrel_offset */ 869 870 /* Low 16 bits of displacement in global offset table. */ 871 HOWTO (R_SCORE_GOT_LO16, /* type */ 872 0, /* rightshift */ 873 2, /* size (0 = byte, 1 = short, 2 = long) */ 874 16, /* bitsize */ 875 FALSE, /* pc_relative */ 876 1, /* bitpos */ 877 complain_overflow_dont,/* complain_on_overflow */ 878 score_elf_got_lo16_reloc, /* special_function */ 879 "R_SCORE_GOT_LO16", /* name */ 880 TRUE, /* partial_inplace */ 881 0x37ffe, /* src_mask */ 882 0x37ffe, /* dst_mask */ 883 FALSE), /* pcrel_offset */ 884 885 /* 15 bit call through global offset table. */ 886 HOWTO (R_SCORE_CALL15, /* type */ 887 0, /* rightshift */ 888 2, /* size (0 = byte, 1 = short, 2 = long) */ 889 16, /* bitsize */ 890 FALSE, /* pc_relative */ 891 0, /* bitpos */ 892 complain_overflow_signed, /* complain_on_overflow */ 893 bfd_elf_generic_reloc, /* special_function */ 894 "R_SCORE_CALL15", /* name */ 895 TRUE, /* partial_inplace */ 896 0x0000ffff, /* src_mask */ 897 0x0000ffff, /* dst_mask */ 898 FALSE), /* pcrel_offset */ 899 900 /* 32 bit GP relative reference. */ 901 HOWTO (R_SCORE_GPREL32, /* type */ 902 0, /* rightshift */ 903 2, /* size (0 = byte, 1 = short, 2 = long) */ 904 32, /* bitsize */ 905 FALSE, /* pc_relative */ 906 0, /* bitpos */ 907 complain_overflow_dont,/* complain_on_overflow */ 908 score_elf_gprel32_reloc, /* special_function */ 909 "R_SCORE_GPREL32", /* name */ 910 TRUE, /* partial_inplace */ 911 0xffffffff, /* src_mask */ 912 0xffffffff, /* dst_mask */ 913 FALSE), /* pcrel_offset */ 914 915 /* 32 bit symbol relative relocation. */ 916 HOWTO (R_SCORE_REL32, /* type */ 917 0, /* rightshift */ 918 2, /* size (0 = byte, 1 = short, 2 = long) */ 919 32, /* bitsize */ 920 FALSE, /* pc_relative */ 921 0, /* bitpos */ 922 complain_overflow_dont,/* complain_on_overflow */ 923 bfd_elf_generic_reloc, /* special_function */ 924 "R_SCORE_REL32", /* name */ 925 TRUE, /* partial_inplace */ 926 0xffffffff, /* src_mask */ 927 0xffffffff, /* dst_mask */ 928 FALSE), /* pcrel_offset */ 929 930 /* R_SCORE_DUMMY_HI16 */ 931 HOWTO (R_SCORE_DUMMY_HI16, /* type */ 932 0, /* rightshift */ 933 2, /* size (0 = byte, 1 = short, 2 = long) */ 934 16, /* bitsize */ 935 FALSE, /* pc_relative */ 936 1, /* bitpos */ 937 complain_overflow_dont,/* complain_on_overflow */ 938 score_elf_hi16_reloc, /* special_function */ 939 "R_SCORE_DUMMY_HI16", /* name */ 940 TRUE, /* partial_inplace */ 941 0x37fff, /* src_mask */ 942 0x37fff, /* dst_mask */ 943 FALSE), /* pcrel_offset */ 944 945 /* R_SCORE_IMM30 */ 946 HOWTO (R_SCORE_IMM30, /* type */ 947 2, /* rightshift */ 948 2, /* size (0 = byte, 1 = short, 2 = long) */ 949 30, /* bitsize */ 950 FALSE, /* pc_relative */ 951 7, /* bitpos */ 952 complain_overflow_dont,/* complain_on_overflow */ 953 bfd_elf_generic_reloc, /* special_function */ 954 "R_SCORE_IMM30", /* name */ 955 FALSE, /* partial_inplace */ 956 0x7f7fff7f80LL, /* src_mask */ 957 0x7f7fff7f80LL, /* dst_mask */ 958 FALSE), /* pcrel_offset */ 959 960 /* R_SCORE_IMM32 */ 961 HOWTO (R_SCORE_IMM32, /* type */ 962 0, /* rightshift */ 963 2, /* size (0 = byte, 1 = short, 2 = long) */ 964 32, /* bitsize */ 965 FALSE, /* pc_relative */ 966 5, /* bitpos */ 967 complain_overflow_dont,/* complain_on_overflow */ 968 bfd_elf_generic_reloc, /* special_function */ 969 "R_SCORE_IMM32", /* name */ 970 FALSE, /* partial_inplace */ 971 0x7f7fff7fe0LL, /* src_mask */ 972 0x7f7fff7fe0LL, /* dst_mask */ 973 FALSE), /* pcrel_offset */ 974 }; 975 976 struct score_reloc_map 977 { 978 bfd_reloc_code_real_type bfd_reloc_val; 979 unsigned char elf_reloc_val; 980 }; 981 982 static const struct score_reloc_map elf32_score_reloc_map[] = 983 { 984 {BFD_RELOC_NONE, R_SCORE_NONE}, 985 {BFD_RELOC_HI16_S, R_SCORE_HI16}, 986 {BFD_RELOC_LO16, R_SCORE_LO16}, 987 {BFD_RELOC_SCORE_BCMP, R_SCORE_BCMP}, 988 {BFD_RELOC_SCORE_JMP, R_SCORE_24}, 989 {BFD_RELOC_SCORE_BRANCH, R_SCORE_PC19}, 990 {BFD_RELOC_SCORE16_JMP, R_SCORE16_11}, 991 {BFD_RELOC_SCORE16_BRANCH, R_SCORE16_PC8}, 992 {BFD_RELOC_32, R_SCORE_ABS32}, 993 {BFD_RELOC_16, R_SCORE_ABS16}, 994 {BFD_RELOC_SCORE_DUMMY2, R_SCORE_DUMMY2}, 995 {BFD_RELOC_SCORE_GPREL15, R_SCORE_GP15}, 996 {BFD_RELOC_VTABLE_INHERIT, R_SCORE_GNU_VTINHERIT}, 997 {BFD_RELOC_VTABLE_ENTRY, R_SCORE_GNU_VTENTRY}, 998 {BFD_RELOC_SCORE_GOT15, R_SCORE_GOT15}, 999 {BFD_RELOC_SCORE_GOT_LO16, R_SCORE_GOT_LO16}, 1000 {BFD_RELOC_SCORE_CALL15, R_SCORE_CALL15}, 1001 {BFD_RELOC_GPREL32, R_SCORE_GPREL32}, 1002 {BFD_RELOC_32_PCREL, R_SCORE_REL32}, 1003 {BFD_RELOC_SCORE_DUMMY_HI16, R_SCORE_DUMMY_HI16}, 1004 {BFD_RELOC_SCORE_IMM30, R_SCORE_IMM30}, 1005 {BFD_RELOC_SCORE_IMM32, R_SCORE_IMM32}, 1006 }; 1007 1008 /* got_entries only match if they're identical, except for gotidx, so 1009 use all fields to compute the hash, and compare the appropriate 1010 union members. */ 1011 static hashval_t 1012 score_elf_got_entry_hash (const void *entry_) 1013 { 1014 const struct score_got_entry *entry = (struct score_got_entry *)entry_; 1015 1016 return entry->symndx 1017 + (!entry->abfd ? entry->d.address : entry->abfd->id); 1018 } 1019 1020 static int 1021 score_elf_got_entry_eq (const void *entry1, const void *entry2) 1022 { 1023 const struct score_got_entry *e1 = (struct score_got_entry *)entry1; 1024 const struct score_got_entry *e2 = (struct score_got_entry *)entry2; 1025 1026 return e1->abfd == e2->abfd && e1->symndx == e2->symndx 1027 && (! e1->abfd ? e1->d.address == e2->d.address 1028 : e1->symndx >= 0 ? e1->d.addend == e2->d.addend 1029 : e1->d.h == e2->d.h); 1030 } 1031 1032 /* If H needs a GOT entry, assign it the highest available dynamic 1033 index. Otherwise, assign it the lowest available dynamic 1034 index. */ 1035 static bfd_boolean 1036 score_elf_sort_hash_table_f (struct score_elf_link_hash_entry *h, void *data) 1037 { 1038 struct score_elf_hash_sort_data *hsd = data; 1039 1040 /* Symbols without dynamic symbol table entries aren't interesting at all. */ 1041 if (h->root.dynindx == -1) 1042 return TRUE; 1043 1044 /* Global symbols that need GOT entries that are not explicitly 1045 referenced are marked with got offset 2. Those that are 1046 referenced get a 1, and those that don't need GOT entries get 1047 -1. */ 1048 if (h->root.got.offset == 2) 1049 { 1050 if (hsd->max_unref_got_dynindx == hsd->min_got_dynindx) 1051 hsd->low = (struct elf_link_hash_entry *) h; 1052 h->root.dynindx = hsd->max_unref_got_dynindx++; 1053 } 1054 else if (h->root.got.offset != 1) 1055 h->root.dynindx = hsd->max_non_got_dynindx++; 1056 else 1057 { 1058 h->root.dynindx = --hsd->min_got_dynindx; 1059 hsd->low = (struct elf_link_hash_entry *) h; 1060 } 1061 1062 return TRUE; 1063 } 1064 1065 static asection * 1066 score_elf_got_section (bfd *abfd, bfd_boolean maybe_excluded) 1067 { 1068 asection *sgot = bfd_get_linker_section (abfd, ".got"); 1069 1070 if (sgot == NULL || (! maybe_excluded && (sgot->flags & SEC_EXCLUDE) != 0)) 1071 return NULL; 1072 return sgot; 1073 } 1074 1075 /* Returns the GOT information associated with the link indicated by 1076 INFO. If SGOTP is non-NULL, it is filled in with the GOT section. */ 1077 static struct score_got_info * 1078 score_elf_got_info (bfd *abfd, asection **sgotp) 1079 { 1080 asection *sgot; 1081 struct score_got_info *g; 1082 1083 sgot = score_elf_got_section (abfd, TRUE); 1084 BFD_ASSERT (sgot != NULL); 1085 BFD_ASSERT (elf_section_data (sgot) != NULL); 1086 g = score_elf_section_data (sgot)->u.got_info; 1087 BFD_ASSERT (g != NULL); 1088 1089 if (sgotp) 1090 *sgotp = sgot; 1091 return g; 1092 } 1093 1094 /* Sort the dynamic symbol table so that symbols that need GOT entries 1095 appear towards the end. This reduces the amount of GOT space 1096 required. MAX_LOCAL is used to set the number of local symbols 1097 known to be in the dynamic symbol table. During 1098 s3_bfd_score_elf_size_dynamic_sections, this value is 1. Afterward, the 1099 section symbols are added and the count is higher. */ 1100 static bfd_boolean 1101 score_elf_sort_hash_table (struct bfd_link_info *info, 1102 unsigned long max_local) 1103 { 1104 struct score_elf_hash_sort_data hsd; 1105 struct score_got_info *g; 1106 bfd *dynobj; 1107 1108 dynobj = elf_hash_table (info)->dynobj; 1109 1110 g = score_elf_got_info (dynobj, NULL); 1111 1112 hsd.low = NULL; 1113 hsd.max_unref_got_dynindx = 1114 hsd.min_got_dynindx = elf_hash_table (info)->dynsymcount 1115 /* In the multi-got case, assigned_gotno of the master got_info 1116 indicate the number of entries that aren't referenced in the 1117 primary GOT, but that must have entries because there are 1118 dynamic relocations that reference it. Since they aren't 1119 referenced, we move them to the end of the GOT, so that they 1120 don't prevent other entries that are referenced from getting 1121 too large offsets. */ 1122 - (g->next ? g->assigned_gotno : 0); 1123 hsd.max_non_got_dynindx = max_local; 1124 score_elf_link_hash_traverse (elf_hash_table (info), 1125 score_elf_sort_hash_table_f, 1126 &hsd); 1127 1128 /* There should have been enough room in the symbol table to 1129 accommodate both the GOT and non-GOT symbols. */ 1130 BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx); 1131 BFD_ASSERT ((unsigned long)hsd.max_unref_got_dynindx 1132 <= elf_hash_table (info)->dynsymcount); 1133 1134 /* Now we know which dynamic symbol has the lowest dynamic symbol 1135 table index in the GOT. */ 1136 g->global_gotsym = hsd.low; 1137 1138 return TRUE; 1139 } 1140 1141 /* Create an entry in an score ELF linker hash table. */ 1142 1143 static struct bfd_hash_entry * 1144 score_elf_link_hash_newfunc (struct bfd_hash_entry *entry, 1145 struct bfd_hash_table *table, 1146 const char *string) 1147 { 1148 struct score_elf_link_hash_entry *ret = (struct score_elf_link_hash_entry *) entry; 1149 1150 /* Allocate the structure if it has not already been allocated by a subclass. */ 1151 if (ret == NULL) 1152 ret = bfd_hash_allocate (table, sizeof (struct score_elf_link_hash_entry)); 1153 if (ret == NULL) 1154 return (struct bfd_hash_entry *) ret; 1155 1156 /* Call the allocation method of the superclass. */ 1157 ret = ((struct score_elf_link_hash_entry *) 1158 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); 1159 1160 if (ret != NULL) 1161 { 1162 ret->possibly_dynamic_relocs = 0; 1163 ret->readonly_reloc = FALSE; 1164 ret->no_fn_stub = FALSE; 1165 ret->forced_local = FALSE; 1166 } 1167 1168 return (struct bfd_hash_entry *) ret; 1169 } 1170 1171 /* Returns the first relocation of type r_type found, beginning with 1172 RELOCATION. RELEND is one-past-the-end of the relocation table. */ 1173 static const Elf_Internal_Rela * 1174 score_elf_next_relocation (bfd *abfd ATTRIBUTE_UNUSED, unsigned int r_type, 1175 const Elf_Internal_Rela *relocation, 1176 const Elf_Internal_Rela *relend) 1177 { 1178 while (relocation < relend) 1179 { 1180 if (ELF32_R_TYPE (relocation->r_info) == r_type) 1181 return relocation; 1182 1183 ++relocation; 1184 } 1185 1186 /* We didn't find it. */ 1187 bfd_set_error (bfd_error_bad_value); 1188 return NULL; 1189 } 1190 1191 /* This function is called via qsort() to sort the dynamic relocation 1192 entries by increasing r_symndx value. */ 1193 static int 1194 score_elf_sort_dynamic_relocs (const void *arg1, const void *arg2) 1195 { 1196 Elf_Internal_Rela int_reloc1; 1197 Elf_Internal_Rela int_reloc2; 1198 1199 bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg1, &int_reloc1); 1200 bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, arg2, &int_reloc2); 1201 1202 return (ELF32_R_SYM (int_reloc1.r_info) - ELF32_R_SYM (int_reloc2.r_info)); 1203 } 1204 1205 /* Return whether a relocation is against a local symbol. */ 1206 static bfd_boolean 1207 score_elf_local_relocation_p (bfd *input_bfd, 1208 const Elf_Internal_Rela *relocation, 1209 asection **local_sections, 1210 bfd_boolean check_forced) 1211 { 1212 unsigned long r_symndx; 1213 Elf_Internal_Shdr *symtab_hdr; 1214 struct score_elf_link_hash_entry *h; 1215 size_t extsymoff; 1216 1217 r_symndx = ELF32_R_SYM (relocation->r_info); 1218 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 1219 extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info; 1220 1221 if (r_symndx < extsymoff) 1222 return TRUE; 1223 if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL) 1224 return TRUE; 1225 1226 if (check_forced) 1227 { 1228 /* Look up the hash table to check whether the symbol was forced local. */ 1229 h = (struct score_elf_link_hash_entry *) 1230 elf_sym_hashes (input_bfd) [r_symndx - extsymoff]; 1231 /* Find the real hash-table entry for this symbol. */ 1232 while (h->root.root.type == bfd_link_hash_indirect 1233 || h->root.root.type == bfd_link_hash_warning) 1234 h = (struct score_elf_link_hash_entry *) h->root.root.u.i.link; 1235 if (h->root.forced_local) 1236 return TRUE; 1237 } 1238 1239 return FALSE; 1240 } 1241 1242 /* Returns the dynamic relocation section for DYNOBJ. */ 1243 static asection * 1244 score_elf_rel_dyn_section (bfd *dynobj, bfd_boolean create_p) 1245 { 1246 static const char dname[] = ".rel.dyn"; 1247 asection *sreloc; 1248 1249 sreloc = bfd_get_linker_section (dynobj, dname); 1250 if (sreloc == NULL && create_p) 1251 { 1252 sreloc = bfd_make_section_anyway_with_flags (dynobj, dname, 1253 (SEC_ALLOC 1254 | SEC_LOAD 1255 | SEC_HAS_CONTENTS 1256 | SEC_IN_MEMORY 1257 | SEC_LINKER_CREATED 1258 | SEC_READONLY)); 1259 if (sreloc == NULL 1260 || ! bfd_set_section_alignment (dynobj, sreloc, 1261 SCORE_ELF_LOG_FILE_ALIGN (dynobj))) 1262 return NULL; 1263 } 1264 return sreloc; 1265 } 1266 1267 static void 1268 score_elf_allocate_dynamic_relocations (bfd *abfd, unsigned int n) 1269 { 1270 asection *s; 1271 1272 s = score_elf_rel_dyn_section (abfd, FALSE); 1273 BFD_ASSERT (s != NULL); 1274 1275 if (s->size == 0) 1276 { 1277 /* Make room for a null element. */ 1278 s->size += SCORE_ELF_REL_SIZE (abfd); 1279 ++s->reloc_count; 1280 } 1281 s->size += n * SCORE_ELF_REL_SIZE (abfd); 1282 } 1283 1284 /* Create a rel.dyn relocation for the dynamic linker to resolve. REL 1285 is the original relocation, which is now being transformed into a 1286 dynamic relocation. The ADDENDP is adjusted if necessary; the 1287 caller should store the result in place of the original addend. */ 1288 static bfd_boolean 1289 score_elf_create_dynamic_relocation (bfd *output_bfd, 1290 struct bfd_link_info *info, 1291 const Elf_Internal_Rela *rel, 1292 struct score_elf_link_hash_entry *h, 1293 bfd_vma symbol, 1294 bfd_vma *addendp, asection *input_section) 1295 { 1296 Elf_Internal_Rela outrel[3]; 1297 asection *sreloc; 1298 bfd *dynobj; 1299 int r_type; 1300 long indx; 1301 bfd_boolean defined_p; 1302 1303 r_type = ELF32_R_TYPE (rel->r_info); 1304 dynobj = elf_hash_table (info)->dynobj; 1305 sreloc = score_elf_rel_dyn_section (dynobj, FALSE); 1306 BFD_ASSERT (sreloc != NULL); 1307 BFD_ASSERT (sreloc->contents != NULL); 1308 BFD_ASSERT (sreloc->reloc_count * SCORE_ELF_REL_SIZE (output_bfd) < sreloc->size); 1309 1310 outrel[0].r_offset = 1311 _bfd_elf_section_offset (output_bfd, info, input_section, rel[0].r_offset); 1312 outrel[1].r_offset = 1313 _bfd_elf_section_offset (output_bfd, info, input_section, rel[1].r_offset); 1314 outrel[2].r_offset = 1315 _bfd_elf_section_offset (output_bfd, info, input_section, rel[2].r_offset); 1316 1317 if (outrel[0].r_offset == MINUS_ONE) 1318 /* The relocation field has been deleted. */ 1319 return TRUE; 1320 1321 if (outrel[0].r_offset == MINUS_TWO) 1322 { 1323 /* The relocation field has been converted into a relative value of 1324 some sort. Functions like _bfd_elf_write_section_eh_frame expect 1325 the field to be fully relocated, so add in the symbol's value. */ 1326 *addendp += symbol; 1327 return TRUE; 1328 } 1329 1330 /* We must now calculate the dynamic symbol table index to use 1331 in the relocation. */ 1332 if (h != NULL 1333 && (! info->symbolic || !h->root.def_regular) 1334 /* h->root.dynindx may be -1 if this symbol was marked to 1335 become local. */ 1336 && h->root.dynindx != -1) 1337 { 1338 indx = h->root.dynindx; 1339 /* ??? glibc's ld.so just adds the final GOT entry to the 1340 relocation field. It therefore treats relocs against 1341 defined symbols in the same way as relocs against 1342 undefined symbols. */ 1343 defined_p = FALSE; 1344 } 1345 else 1346 { 1347 indx = 0; 1348 defined_p = TRUE; 1349 } 1350 1351 /* If the relocation was previously an absolute relocation and 1352 this symbol will not be referred to by the relocation, we must 1353 adjust it by the value we give it in the dynamic symbol table. 1354 Otherwise leave the job up to the dynamic linker. */ 1355 if (defined_p && r_type != R_SCORE_REL32) 1356 *addendp += symbol; 1357 1358 /* The relocation is always an REL32 relocation because we don't 1359 know where the shared library will wind up at load-time. */ 1360 outrel[0].r_info = ELF32_R_INFO ((unsigned long) indx, R_SCORE_REL32); 1361 1362 /* For strict adherence to the ABI specification, we should 1363 generate a R_SCORE_64 relocation record by itself before the 1364 _REL32/_64 record as well, such that the addend is read in as 1365 a 64-bit value (REL32 is a 32-bit relocation, after all). 1366 However, since none of the existing ELF64 SCORE dynamic 1367 loaders seems to care, we don't waste space with these 1368 artificial relocations. If this turns out to not be true, 1369 score_elf_allocate_dynamic_relocations() should be tweaked so 1370 as to make room for a pair of dynamic relocations per 1371 invocation if ABI_64_P, and here we should generate an 1372 additional relocation record with R_SCORE_64 by itself for a 1373 NULL symbol before this relocation record. */ 1374 outrel[1].r_info = ELF32_R_INFO (0, R_SCORE_NONE); 1375 outrel[2].r_info = ELF32_R_INFO (0, R_SCORE_NONE); 1376 1377 /* Adjust the output offset of the relocation to reference the 1378 correct location in the output file. */ 1379 outrel[0].r_offset += (input_section->output_section->vma 1380 + input_section->output_offset); 1381 outrel[1].r_offset += (input_section->output_section->vma 1382 + input_section->output_offset); 1383 outrel[2].r_offset += (input_section->output_section->vma 1384 + input_section->output_offset); 1385 1386 /* Put the relocation back out. We have to use the special 1387 relocation outputter in the 64-bit case since the 64-bit 1388 relocation format is non-standard. */ 1389 bfd_elf32_swap_reloc_out 1390 (output_bfd, &outrel[0], 1391 (sreloc->contents + sreloc->reloc_count * sizeof (Elf32_External_Rel))); 1392 1393 /* We've now added another relocation. */ 1394 ++sreloc->reloc_count; 1395 1396 /* Make sure the output section is writable. The dynamic linker 1397 will be writing to it. */ 1398 elf_section_data (input_section->output_section)->this_hdr.sh_flags |= SHF_WRITE; 1399 1400 return TRUE; 1401 } 1402 1403 static bfd_boolean 1404 score_elf_create_got_section (bfd *abfd, 1405 struct bfd_link_info *info, 1406 bfd_boolean maybe_exclude) 1407 { 1408 flagword flags; 1409 asection *s; 1410 struct elf_link_hash_entry *h; 1411 struct bfd_link_hash_entry *bh; 1412 struct score_got_info *g; 1413 bfd_size_type amt; 1414 1415 /* This function may be called more than once. */ 1416 s = score_elf_got_section (abfd, TRUE); 1417 if (s) 1418 { 1419 if (! maybe_exclude) 1420 s->flags &= ~SEC_EXCLUDE; 1421 return TRUE; 1422 } 1423 1424 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); 1425 1426 if (maybe_exclude) 1427 flags |= SEC_EXCLUDE; 1428 1429 /* We have to use an alignment of 2**4 here because this is hardcoded 1430 in the function stub generation and in the linker script. */ 1431 s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); 1432 elf_hash_table (info)->sgot = s; 1433 if (s == NULL 1434 || ! bfd_set_section_alignment (abfd, s, 4)) 1435 return FALSE; 1436 1437 /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the 1438 linker script because we don't want to define the symbol if we 1439 are not creating a global offset table. */ 1440 bh = NULL; 1441 if (! (_bfd_generic_link_add_one_symbol 1442 (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, 1443 0, NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) 1444 return FALSE; 1445 1446 h = (struct elf_link_hash_entry *) bh; 1447 h->non_elf = 0; 1448 h->def_regular = 1; 1449 h->type = STT_OBJECT; 1450 elf_hash_table (info)->hgot = h; 1451 1452 if (bfd_link_pic (info) && ! bfd_elf_link_record_dynamic_symbol (info, h)) 1453 return FALSE; 1454 1455 amt = sizeof (struct score_got_info); 1456 g = bfd_alloc (abfd, amt); 1457 if (g == NULL) 1458 return FALSE; 1459 1460 g->global_gotsym = NULL; 1461 g->global_gotno = 0; 1462 1463 g->local_gotno = SCORE_RESERVED_GOTNO; 1464 g->assigned_gotno = SCORE_RESERVED_GOTNO; 1465 g->next = NULL; 1466 1467 g->got_entries = htab_try_create (1, score_elf_got_entry_hash, 1468 score_elf_got_entry_eq, NULL); 1469 if (g->got_entries == NULL) 1470 return FALSE; 1471 score_elf_section_data (s)->u.got_info = g; 1472 score_elf_section_data (s)->elf.this_hdr.sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_SCORE_GPREL; 1473 1474 return TRUE; 1475 } 1476 1477 /* Calculate the %high function. */ 1478 static bfd_vma 1479 score_elf_high (bfd_vma value) 1480 { 1481 return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff; 1482 } 1483 1484 /* Create a local GOT entry for VALUE. Return the index of the entry, 1485 or -1 if it could not be created. */ 1486 static struct score_got_entry * 1487 score_elf_create_local_got_entry (bfd *abfd, 1488 bfd *ibfd ATTRIBUTE_UNUSED, 1489 struct score_got_info *gg, 1490 asection *sgot, bfd_vma value, 1491 unsigned long r_symndx ATTRIBUTE_UNUSED, 1492 struct score_elf_link_hash_entry *h ATTRIBUTE_UNUSED, 1493 int r_type ATTRIBUTE_UNUSED) 1494 { 1495 struct score_got_entry entry, **loc; 1496 struct score_got_info *g; 1497 1498 entry.abfd = NULL; 1499 entry.symndx = -1; 1500 entry.d.address = value; 1501 1502 g = gg; 1503 loc = (struct score_got_entry **) htab_find_slot (g->got_entries, &entry, INSERT); 1504 if (*loc) 1505 return *loc; 1506 1507 entry.gotidx = SCORE_ELF_GOT_SIZE (abfd) * g->assigned_gotno++; 1508 1509 *loc = bfd_alloc (abfd, sizeof entry); 1510 1511 if (! *loc) 1512 return NULL; 1513 1514 memcpy (*loc, &entry, sizeof entry); 1515 1516 if (g->assigned_gotno >= g->local_gotno) 1517 { 1518 (*loc)->gotidx = -1; 1519 /* We didn't allocate enough space in the GOT. */ 1520 _bfd_error_handler 1521 (_("not enough GOT space for local GOT entries")); 1522 bfd_set_error (bfd_error_bad_value); 1523 return NULL; 1524 } 1525 1526 score_bfd_put_32 (abfd, value, (sgot->contents + entry.gotidx)); 1527 1528 return *loc; 1529 } 1530 1531 /* Find a GOT entry whose higher-order 16 bits are the same as those 1532 for value. Return the index into the GOT for this entry. */ 1533 static bfd_vma 1534 score_elf_got16_entry (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, 1535 bfd_vma value, bfd_boolean external) 1536 { 1537 asection *sgot; 1538 struct score_got_info *g; 1539 struct score_got_entry *entry; 1540 1541 if (!external) 1542 { 1543 /* Although the ABI says that it is "the high-order 16 bits" that we 1544 want, it is really the %high value. The complete value is 1545 calculated with a `addiu' of a LO16 relocation, just as with a 1546 HI16/LO16 pair. */ 1547 value = score_elf_high (value) << 16; 1548 } 1549 1550 g = score_elf_got_info (elf_hash_table (info)->dynobj, &sgot); 1551 1552 entry = score_elf_create_local_got_entry (abfd, ibfd, g, sgot, value, 0, NULL, 1553 R_SCORE_GOT15); 1554 if (entry) 1555 return entry->gotidx; 1556 else 1557 return MINUS_ONE; 1558 } 1559 1560 static void 1561 s3_bfd_score_elf_hide_symbol (struct bfd_link_info *info, 1562 struct elf_link_hash_entry *entry, 1563 bfd_boolean force_local) 1564 { 1565 bfd *dynobj; 1566 asection *got; 1567 struct score_got_info *g; 1568 struct score_elf_link_hash_entry *h; 1569 1570 h = (struct score_elf_link_hash_entry *) entry; 1571 if (h->forced_local) 1572 return; 1573 h->forced_local = TRUE; 1574 1575 dynobj = elf_hash_table (info)->dynobj; 1576 if (dynobj != NULL && force_local) 1577 { 1578 got = score_elf_got_section (dynobj, FALSE); 1579 if (got == NULL) 1580 return; 1581 g = score_elf_section_data (got)->u.got_info; 1582 1583 if (g->next) 1584 { 1585 struct score_got_entry e; 1586 struct score_got_info *gg = g; 1587 1588 /* Since we're turning what used to be a global symbol into a 1589 local one, bump up the number of local entries of each GOT 1590 that had an entry for it. This will automatically decrease 1591 the number of global entries, since global_gotno is actually 1592 the upper limit of global entries. */ 1593 e.abfd = dynobj; 1594 e.symndx = -1; 1595 e.d.h = h; 1596 1597 for (g = g->next; g != gg; g = g->next) 1598 if (htab_find (g->got_entries, &e)) 1599 { 1600 BFD_ASSERT (g->global_gotno > 0); 1601 g->local_gotno++; 1602 g->global_gotno--; 1603 } 1604 1605 /* If this was a global symbol forced into the primary GOT, we 1606 no longer need an entry for it. We can't release the entry 1607 at this point, but we must at least stop counting it as one 1608 of the symbols that required a forced got entry. */ 1609 if (h->root.got.offset == 2) 1610 { 1611 BFD_ASSERT (gg->assigned_gotno > 0); 1612 gg->assigned_gotno--; 1613 } 1614 } 1615 else if (g->global_gotno == 0 && g->global_gotsym == NULL) 1616 /* If we haven't got through GOT allocation yet, just bump up the 1617 number of local entries, as this symbol won't be counted as 1618 global. */ 1619 g->local_gotno++; 1620 else if (h->root.got.offset == 1) 1621 { 1622 /* If we're past non-multi-GOT allocation and this symbol had 1623 been marked for a global got entry, give it a local entry 1624 instead. */ 1625 BFD_ASSERT (g->global_gotno > 0); 1626 g->local_gotno++; 1627 g->global_gotno--; 1628 } 1629 } 1630 1631 _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local); 1632 } 1633 1634 /* If H is a symbol that needs a global GOT entry, but has a dynamic 1635 symbol table index lower than any we've seen to date, record it for 1636 posterity. */ 1637 static bfd_boolean 1638 score_elf_record_global_got_symbol (struct elf_link_hash_entry *h, 1639 bfd *abfd, 1640 struct bfd_link_info *info, 1641 struct score_got_info *g) 1642 { 1643 struct score_got_entry entry, **loc; 1644 1645 /* A global symbol in the GOT must also be in the dynamic symbol table. */ 1646 if (h->dynindx == -1) 1647 { 1648 switch (ELF_ST_VISIBILITY (h->other)) 1649 { 1650 case STV_INTERNAL: 1651 case STV_HIDDEN: 1652 s3_bfd_score_elf_hide_symbol (info, h, TRUE); 1653 break; 1654 } 1655 if (!bfd_elf_link_record_dynamic_symbol (info, h)) 1656 return FALSE; 1657 } 1658 1659 entry.abfd = abfd; 1660 entry.symndx = -1; 1661 entry.d.h = (struct score_elf_link_hash_entry *)h; 1662 1663 loc = (struct score_got_entry **)htab_find_slot (g->got_entries, &entry, INSERT); 1664 1665 /* If we've already marked this entry as needing GOT space, we don't 1666 need to do it again. */ 1667 if (*loc) 1668 return TRUE; 1669 1670 *loc = bfd_alloc (abfd, sizeof entry); 1671 if (! *loc) 1672 return FALSE; 1673 1674 entry.gotidx = -1; 1675 1676 memcpy (*loc, &entry, sizeof (entry)); 1677 1678 if (h->got.offset != MINUS_ONE) 1679 return TRUE; 1680 1681 /* By setting this to a value other than -1, we are indicating that 1682 there needs to be a GOT entry for H. Avoid using zero, as the 1683 generic ELF copy_indirect_symbol tests for <= 0. */ 1684 h->got.offset = 1; 1685 1686 return TRUE; 1687 } 1688 1689 /* Reserve space in G for a GOT entry containing the value of symbol 1690 SYMNDX in input bfd ABDF, plus ADDEND. */ 1691 static bfd_boolean 1692 score_elf_record_local_got_symbol (bfd *abfd, 1693 long symndx, 1694 bfd_vma addend, 1695 struct score_got_info *g) 1696 { 1697 struct score_got_entry entry, **loc; 1698 1699 entry.abfd = abfd; 1700 entry.symndx = symndx; 1701 entry.d.addend = addend; 1702 loc = (struct score_got_entry **)htab_find_slot (g->got_entries, &entry, INSERT); 1703 1704 if (*loc) 1705 return TRUE; 1706 1707 entry.gotidx = g->local_gotno++; 1708 1709 *loc = bfd_alloc (abfd, sizeof(entry)); 1710 if (! *loc) 1711 return FALSE; 1712 1713 memcpy (*loc, &entry, sizeof (entry)); 1714 1715 return TRUE; 1716 } 1717 1718 /* Returns the GOT offset at which the indicated address can be found. 1719 If there is not yet a GOT entry for this value, create one. 1720 Returns -1 if no satisfactory GOT offset can be found. */ 1721 static bfd_vma 1722 score_elf_local_got_index (bfd *abfd, bfd *ibfd, struct bfd_link_info *info, 1723 bfd_vma value, unsigned long r_symndx, 1724 struct score_elf_link_hash_entry *h, int r_type) 1725 { 1726 asection *sgot; 1727 struct score_got_info *g; 1728 struct score_got_entry *entry; 1729 1730 g = score_elf_got_info (elf_hash_table (info)->dynobj, &sgot); 1731 1732 entry = score_elf_create_local_got_entry (abfd, ibfd, g, sgot, value, 1733 r_symndx, h, r_type); 1734 if (!entry) 1735 return MINUS_ONE; 1736 1737 else 1738 return entry->gotidx; 1739 } 1740 1741 /* Returns the GOT index for the global symbol indicated by H. */ 1742 1743 static bfd_vma 1744 score_elf_global_got_index (bfd *abfd, struct elf_link_hash_entry *h) 1745 { 1746 bfd_vma got_index; 1747 asection *sgot; 1748 struct score_got_info *g; 1749 long global_got_dynindx = 0; 1750 1751 g = score_elf_got_info (abfd, &sgot); 1752 if (g->global_gotsym != NULL) 1753 global_got_dynindx = g->global_gotsym->dynindx; 1754 1755 /* Once we determine the global GOT entry with the lowest dynamic 1756 symbol table index, we must put all dynamic symbols with greater 1757 indices into the GOT. That makes it easy to calculate the GOT 1758 offset. */ 1759 BFD_ASSERT (h->dynindx >= global_got_dynindx); 1760 got_index = ((h->dynindx - global_got_dynindx + g->local_gotno) * SCORE_ELF_GOT_SIZE (abfd)); 1761 BFD_ASSERT (got_index < sgot->size); 1762 1763 return got_index; 1764 } 1765 1766 /* Returns the offset for the entry at the INDEXth position in the GOT. */ 1767 1768 static bfd_vma 1769 score_elf_got_offset_from_index (bfd *dynobj, 1770 bfd *output_bfd, 1771 bfd *input_bfd ATTRIBUTE_UNUSED, 1772 bfd_vma got_index) 1773 { 1774 asection *sgot; 1775 bfd_vma gp; 1776 1777 score_elf_got_info (dynobj, &sgot); 1778 gp = _bfd_get_gp_value (output_bfd); 1779 1780 return sgot->output_section->vma + sgot->output_offset + got_index - gp; 1781 } 1782 1783 /* Follow indirect and warning hash entries so that each got entry 1784 points to the final symbol definition. P must point to a pointer 1785 to the hash table we're traversing. Since this traversal may 1786 modify the hash table, we set this pointer to NULL to indicate 1787 we've made a potentially-destructive change to the hash table, so 1788 the traversal must be restarted. */ 1789 static int 1790 score_elf_resolve_final_got_entry (void **entryp, void *p) 1791 { 1792 struct score_got_entry *entry = (struct score_got_entry *)*entryp; 1793 htab_t got_entries = *(htab_t *)p; 1794 1795 if (entry->abfd != NULL && entry->symndx == -1) 1796 { 1797 struct score_elf_link_hash_entry *h = entry->d.h; 1798 1799 while (h->root.root.type == bfd_link_hash_indirect 1800 || h->root.root.type == bfd_link_hash_warning) 1801 h = (struct score_elf_link_hash_entry *) h->root.root.u.i.link; 1802 1803 if (entry->d.h == h) 1804 return 1; 1805 1806 entry->d.h = h; 1807 1808 /* If we can't find this entry with the new bfd hash, re-insert 1809 it, and get the traversal restarted. */ 1810 if (! htab_find (got_entries, entry)) 1811 { 1812 htab_clear_slot (got_entries, entryp); 1813 entryp = htab_find_slot (got_entries, entry, INSERT); 1814 if (! *entryp) 1815 *entryp = entry; 1816 /* Abort the traversal, since the whole table may have 1817 moved, and leave it up to the parent to restart the 1818 process. */ 1819 *(htab_t *)p = NULL; 1820 return 0; 1821 } 1822 /* We might want to decrement the global_gotno count, but it's 1823 either too early or too late for that at this point. */ 1824 } 1825 1826 return 1; 1827 } 1828 1829 /* Turn indirect got entries in a got_entries table into their final locations. */ 1830 static void 1831 score_elf_resolve_final_got_entries (struct score_got_info *g) 1832 { 1833 htab_t got_entries; 1834 1835 do 1836 { 1837 got_entries = g->got_entries; 1838 1839 htab_traverse (got_entries, 1840 score_elf_resolve_final_got_entry, 1841 &got_entries); 1842 } 1843 while (got_entries == NULL); 1844 } 1845 1846 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. for -r */ 1847 static void 1848 score_elf_add_to_rel (bfd *abfd, 1849 bfd_byte *address, 1850 reloc_howto_type *howto, 1851 bfd_signed_vma increment) 1852 { 1853 bfd_signed_vma addend; 1854 bfd_vma contents; 1855 unsigned long offset; 1856 unsigned long r_type = howto->type; 1857 unsigned long hi16_addend, hi16_offset, hi16_value, uvalue; 1858 1859 contents = score_bfd_get_32 (abfd, address); 1860 /* Get the (signed) value from the instruction. */ 1861 addend = contents & howto->src_mask; 1862 if (addend & ((howto->src_mask + 1) >> 1)) 1863 { 1864 bfd_signed_vma mask; 1865 1866 mask = -1; 1867 mask &= ~howto->src_mask; 1868 addend |= mask; 1869 } 1870 /* Add in the increment, (which is a byte value). */ 1871 switch (r_type) 1872 { 1873 case R_SCORE_PC19: 1874 offset = 1875 (((contents & howto->src_mask) & 0x3ff0000) >> 6) | ((contents & howto->src_mask) & 0x3ff); 1876 offset += increment; 1877 contents = 1878 (contents & ~howto-> 1879 src_mask) | (((offset << 6) & howto->src_mask) & 0x3ff0000) | (offset & 0x3ff); 1880 score_bfd_put_32 (abfd, contents, address); 1881 break; 1882 case R_SCORE_HI16: 1883 break; 1884 case R_SCORE_LO16: 1885 hi16_addend = score_bfd_get_32 (abfd, address - 4); 1886 hi16_offset = ((((hi16_addend >> 16) & 0x3) << 15) | (hi16_addend & 0x7fff)) >> 1; 1887 offset = ((((contents >> 16) & 0x3) << 15) | (contents & 0x7fff)) >> 1; 1888 offset = (hi16_offset << 16) | (offset & 0xffff); 1889 uvalue = increment + offset; 1890 hi16_offset = (uvalue >> 16) << 1; 1891 hi16_value = (hi16_addend & (~(howto->dst_mask))) 1892 | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000); 1893 score_bfd_put_32 (abfd, hi16_value, address - 4); 1894 offset = (uvalue & 0xffff) << 1; 1895 contents = (contents & (~(howto->dst_mask))) | (offset & 0x7fff) | ((offset << 1) & 0x30000); 1896 score_bfd_put_32 (abfd, contents, address); 1897 break; 1898 case R_SCORE_24: 1899 offset = 1900 (((contents & howto->src_mask) >> 1) & 0x1ff8000) | ((contents & howto->src_mask) & 0x7fff); 1901 offset += increment; 1902 contents = 1903 (contents & ~howto-> 1904 src_mask) | (((offset << 1) & howto->src_mask) & 0x3ff0000) | (offset & 0x7fff); 1905 score_bfd_put_32 (abfd, contents, address); 1906 break; 1907 1908 case R_SCORE16_11: 1909 1910 contents = score_bfd_get_16 (abfd, address); 1911 offset = contents & howto->src_mask; 1912 offset += increment; 1913 contents = (contents & ~howto->src_mask) | (offset & howto->src_mask); 1914 score_bfd_put_16 (abfd, contents, address); 1915 1916 break; 1917 case R_SCORE16_PC8: 1918 1919 contents = score_bfd_get_16 (abfd, address); 1920 offset = (contents & howto->src_mask) + ((increment >> 1) & 0x1ff); 1921 contents = (contents & (~howto->src_mask)) | (offset & howto->src_mask); 1922 score_bfd_put_16 (abfd, contents, address); 1923 1924 break; 1925 1926 case R_SCORE_BCMP: 1927 contents = score_bfd_get_32 (abfd, address); 1928 offset = (contents & howto->src_mask); 1929 offset <<= howto->rightshift; 1930 offset += increment; 1931 offset >>= howto->rightshift; 1932 contents = (contents & (~howto->src_mask)) | (offset & howto->src_mask); 1933 score_bfd_put_32 (abfd, contents, address); 1934 break; 1935 1936 case R_SCORE_IMM30: 1937 contents = score_bfd_get_48 (abfd, address); 1938 offset = (contents & howto->src_mask); 1939 offset <<= howto->rightshift; 1940 offset += increment; 1941 offset >>= howto->rightshift; 1942 contents = (contents & (~howto->src_mask)) | (offset & howto->src_mask); 1943 score_bfd_put_48 (abfd, contents, address); 1944 break; 1945 1946 case R_SCORE_IMM32: 1947 contents = score_bfd_get_48 (abfd, address); 1948 offset = (contents & howto->src_mask); 1949 offset += increment; 1950 contents = (contents & (~howto->src_mask)) | (offset & howto->src_mask); 1951 score_bfd_put_48 (abfd, contents, address); 1952 break; 1953 1954 default: 1955 addend += increment; 1956 contents = (contents & ~howto->dst_mask) | (addend & howto->dst_mask); 1957 score_bfd_put_32 (abfd, contents, address); 1958 break; 1959 } 1960 } 1961 1962 /* Perform a relocation as part of a final link. */ 1963 static bfd_reloc_status_type 1964 score_elf_final_link_relocate (reloc_howto_type *howto, 1965 bfd *input_bfd, 1966 bfd *output_bfd, 1967 asection *input_section, 1968 bfd_byte *contents, 1969 Elf_Internal_Rela *rel, 1970 Elf_Internal_Rela *relocs, 1971 bfd_vma symbol, 1972 struct bfd_link_info *info, 1973 const char *sym_name ATTRIBUTE_UNUSED, 1974 int sym_flags ATTRIBUTE_UNUSED, 1975 struct score_elf_link_hash_entry *h, 1976 asection **local_sections, 1977 bfd_boolean gp_disp_p) 1978 { 1979 unsigned long r_type; 1980 unsigned long r_symndx; 1981 bfd_byte *hit_data = contents + rel->r_offset; 1982 bfd_vma addend; 1983 /* The final GP value to be used for the relocatable, executable, or 1984 shared object file being produced. */ 1985 bfd_vma gp = MINUS_ONE; 1986 /* The place (section offset or address) of the storage unit being relocated. */ 1987 bfd_vma rel_addr; 1988 /* The offset into the global offset table at which the address of the relocation entry 1989 symbol, adjusted by the addend, resides during execution. */ 1990 bfd_vma g = MINUS_ONE; 1991 /* TRUE if the symbol referred to by this relocation is a local symbol. */ 1992 bfd_boolean local_p; 1993 /* The eventual value we will relocate. */ 1994 bfd_vma value = symbol; 1995 unsigned long hi16_addend, hi16_offset, hi16_value, uvalue, offset, abs_value = 0; 1996 1997 1998 if (elf_gp (output_bfd) == 0) 1999 { 2000 struct bfd_link_hash_entry *bh; 2001 asection *o; 2002 2003 bh = bfd_link_hash_lookup (info->hash, "_gp", 0, 0, 1); 2004 if (bh != NULL && bh->type == bfd_link_hash_defined) 2005 elf_gp (output_bfd) = (bh->u.def.value 2006 + bh->u.def.section->output_section->vma 2007 + bh->u.def.section->output_offset); 2008 else if (bfd_link_relocatable (info)) 2009 { 2010 bfd_vma lo = -1; 2011 2012 /* Find the GP-relative section with the lowest offset. */ 2013 for (o = output_bfd->sections; o != NULL; o = o->next) 2014 if (o->vma < lo) 2015 lo = o->vma; 2016 /* And calculate GP relative to that. */ 2017 elf_gp (output_bfd) = lo + ELF_SCORE_GP_OFFSET (input_bfd); 2018 } 2019 else 2020 { 2021 /* If the relocate_section function needs to do a reloc 2022 involving the GP value, it should make a reloc_dangerous 2023 callback to warn that GP is not defined. */ 2024 } 2025 } 2026 2027 /* Parse the relocation. */ 2028 r_symndx = ELF32_R_SYM (rel->r_info); 2029 r_type = ELF32_R_TYPE (rel->r_info); 2030 rel_addr = (input_section->output_section->vma + input_section->output_offset + rel->r_offset); 2031 local_p = score_elf_local_relocation_p (input_bfd, rel, local_sections, TRUE); 2032 2033 if (r_type == R_SCORE_GOT15) 2034 { 2035 const Elf_Internal_Rela *relend; 2036 const Elf_Internal_Rela *lo16_rel; 2037 bfd_vma lo_value = 0; 2038 2039 relend = relocs + input_section->reloc_count; 2040 lo16_rel = score_elf_next_relocation (input_bfd, R_SCORE_GOT_LO16, rel, relend); 2041 if ((local_p) && (lo16_rel != NULL)) 2042 { 2043 bfd_vma tmp = 0; 2044 tmp = score_bfd_get_32 (input_bfd, contents + lo16_rel->r_offset); 2045 lo_value = (((tmp >> 16) & 0x3) << 14) | ((tmp & 0x7fff) >> 1); 2046 } 2047 addend = lo_value; 2048 } 2049 /* For score3 R_SCORE_ABS32. */ 2050 else if (r_type == R_SCORE_ABS32 || r_type == R_SCORE_REL32) 2051 { 2052 addend = (bfd_get_32 (input_bfd, hit_data) >> howto->bitpos) & howto->src_mask; 2053 } 2054 else 2055 { 2056 addend = (score_bfd_get_32 (input_bfd, hit_data) >> howto->bitpos) & howto->src_mask; 2057 } 2058 2059 /* If we haven't already determined the GOT offset, or the GP value, 2060 and we're going to need it, get it now. */ 2061 switch (r_type) 2062 { 2063 case R_SCORE_CALL15: 2064 case R_SCORE_GOT15: 2065 if (!local_p) 2066 { 2067 g = score_elf_global_got_index (elf_hash_table (info)->dynobj, 2068 (struct elf_link_hash_entry *) h); 2069 if ((! elf_hash_table (info)->dynamic_sections_created 2070 || (bfd_link_pic (info) 2071 && (info->symbolic || h->root.dynindx == -1) 2072 && h->root.def_regular))) 2073 { 2074 /* This is a static link or a -Bsymbolic link. The 2075 symbol is defined locally, or was forced to be local. 2076 We must initialize this entry in the GOT. */ 2077 bfd *tmpbfd = elf_hash_table (info)->dynobj; 2078 asection *sgot = score_elf_got_section (tmpbfd, FALSE); 2079 score_bfd_put_32 (tmpbfd, value, sgot->contents + g); 2080 } 2081 } 2082 else if (r_type == R_SCORE_GOT15 || r_type == R_SCORE_CALL15) 2083 { 2084 /* There's no need to create a local GOT entry here; the 2085 calculation for a local GOT15 entry does not involve G. */ 2086 ; 2087 } 2088 else 2089 { 2090 g = score_elf_local_got_index (output_bfd, input_bfd, info, 2091 symbol + addend, r_symndx, h, r_type); 2092 if (g == MINUS_ONE) 2093 return bfd_reloc_outofrange; 2094 } 2095 2096 /* Convert GOT indices to actual offsets. */ 2097 g = score_elf_got_offset_from_index (elf_hash_table (info)->dynobj, 2098 output_bfd, input_bfd, g); 2099 break; 2100 2101 case R_SCORE_HI16: 2102 case R_SCORE_LO16: 2103 case R_SCORE_GPREL32: 2104 gp = _bfd_get_gp_value (output_bfd); 2105 break; 2106 2107 case R_SCORE_GP15: 2108 gp = _bfd_get_gp_value (output_bfd); 2109 2110 default: 2111 break; 2112 } 2113 2114 switch (r_type) 2115 { 2116 case R_SCORE_NONE: 2117 return bfd_reloc_ok; 2118 2119 case R_SCORE_ABS32: 2120 case R_SCORE_REL32: 2121 if ((bfd_link_pic (info) 2122 || (elf_hash_table (info)->dynamic_sections_created 2123 && h != NULL 2124 && h->root.def_dynamic 2125 && !h->root.def_regular)) 2126 && r_symndx != STN_UNDEF 2127 && (input_section->flags & SEC_ALLOC) != 0) 2128 { 2129 /* If we're creating a shared library, or this relocation is against a symbol 2130 in a shared library, then we can't know where the symbol will end up. 2131 So, we create a relocation record in the output, and leave the job up 2132 to the dynamic linker. */ 2133 value = addend; 2134 if (!score_elf_create_dynamic_relocation (output_bfd, info, rel, h, 2135 symbol, &value, 2136 input_section)) 2137 return bfd_reloc_undefined; 2138 } 2139 else if (r_symndx == STN_UNDEF) 2140 /* r_symndx will be STN_UNDEF (zero) only for relocs against symbols 2141 from removed linkonce sections, or sections discarded by 2142 a linker script. */ 2143 value = 0; 2144 else 2145 { 2146 if (r_type != R_SCORE_REL32) 2147 value = symbol + addend; 2148 else 2149 value = addend; 2150 } 2151 value &= howto->dst_mask; 2152 bfd_put_32 (input_bfd, value, hit_data); 2153 return bfd_reloc_ok; 2154 2155 case R_SCORE_ABS16: 2156 value += addend; 2157 if ((long)value > 0x7fff || (long)value < -0x8000) 2158 return bfd_reloc_overflow; 2159 score_bfd_put_16 (input_bfd, value, hit_data); 2160 return bfd_reloc_ok; 2161 2162 case R_SCORE_24: 2163 addend = score_bfd_get_32 (input_bfd, hit_data); 2164 offset = (((addend & howto->src_mask) >> 1) & 0x1ff8000) | ((addend & howto->src_mask) & 0x7fff); 2165 if ((offset & 0x1000000) != 0) 2166 offset |= 0xfe000000; 2167 value += offset; 2168 abs_value = value - rel_addr; 2169 if ((abs_value & 0xfe000000) != 0) 2170 return bfd_reloc_overflow; 2171 addend = (addend & ~howto->src_mask) 2172 | (((value << 1) & howto->src_mask) & 0x3ff0000) | (value & 0x7fff); 2173 score_bfd_put_32 (input_bfd, addend, hit_data); 2174 return bfd_reloc_ok; 2175 2176 /* signed imm32. */ 2177 case R_SCORE_IMM30: 2178 { 2179 int not_word_align_p = 0; 2180 bfd_vma imm_offset = 0; 2181 addend = score_bfd_get_48 (input_bfd, hit_data); 2182 imm_offset = ((addend >> 7) & 0xff) 2183 | (((addend >> 16) & 0x7fff) << 8) 2184 | (((addend >> 32) & 0x7f) << 23); 2185 imm_offset <<= howto->rightshift; 2186 value += imm_offset; 2187 value &= 0xffffffff; 2188 2189 /* Check lw48/sw48 rd, value/label word align. */ 2190 if ((value & 0x3) != 0) 2191 not_word_align_p = 1; 2192 2193 value >>= howto->rightshift; 2194 addend = (addend & ~howto->src_mask) 2195 | (((value & 0xff) >> 0) << 7) 2196 | (((value & 0x7fff00) >> 8) << 16) 2197 | (((value & 0x3f800000) >> 23) << 32); 2198 score_bfd_put_48 (input_bfd, addend, hit_data); 2199 if (not_word_align_p) 2200 return bfd_reloc_other; 2201 else 2202 return bfd_reloc_ok; 2203 } 2204 2205 case R_SCORE_IMM32: 2206 { 2207 bfd_vma imm_offset = 0; 2208 addend = score_bfd_get_48 (input_bfd, hit_data); 2209 imm_offset = ((addend >> 5) & 0x3ff) 2210 | (((addend >> 16) & 0x7fff) << 10) 2211 | (((addend >> 32) & 0x7f) << 25); 2212 value += imm_offset; 2213 value &= 0xffffffff; 2214 addend = (addend & ~howto->src_mask) 2215 | ((value & 0x3ff) << 5) 2216 | (((value >> 10) & 0x7fff) << 16) 2217 | (((value >> 25) & 0x7f) << 32); 2218 score_bfd_put_48 (input_bfd, addend, hit_data); 2219 return bfd_reloc_ok; 2220 } 2221 2222 case R_SCORE_PC19: 2223 addend = score_bfd_get_32 (input_bfd, hit_data); 2224 offset = (((addend & howto->src_mask) & 0x3ff0000) >> 6) | ((addend & howto->src_mask) & 0x3ff); 2225 if ((offset & 0x80000) != 0) 2226 offset |= 0xfff00000; 2227 abs_value = value = value - rel_addr + offset; 2228 /* exceed 20 bit : overflow. */ 2229 if ((abs_value & 0x80000000) == 0x80000000) 2230 abs_value = 0xffffffff - value + 1; 2231 if ((abs_value & 0xfff80000) != 0) 2232 return bfd_reloc_overflow; 2233 addend = (addend & ~howto->src_mask) 2234 | (((value << 6) & howto->src_mask) & 0x3ff0000) | (value & 0x3ff); 2235 score_bfd_put_32 (input_bfd, addend, hit_data); 2236 return bfd_reloc_ok; 2237 2238 case R_SCORE16_11: 2239 addend = score_bfd_get_16 (input_bfd, hit_data); 2240 offset = addend & howto->src_mask; 2241 if ((offset & 0x800) != 0) /* Offset is negative. */ 2242 offset |= 0xfffff000; 2243 value += offset; 2244 abs_value = value - rel_addr; 2245 if ((abs_value & 0xfffff000) != 0) 2246 return bfd_reloc_overflow; 2247 addend = (addend & ~howto->src_mask) | (value & howto->src_mask); 2248 score_bfd_put_16 (input_bfd, addend, hit_data); 2249 return bfd_reloc_ok; 2250 2251 case R_SCORE16_PC8: 2252 addend = score_bfd_get_16 (input_bfd, hit_data); 2253 offset = (addend & howto->src_mask) << 1; 2254 if ((offset & 0x200) != 0) /* Offset is negative. */ 2255 offset |= 0xfffffe00; 2256 abs_value = value = value - rel_addr + offset; 2257 /* Sign bit + exceed 9 bit. */ 2258 if (((value & 0xfffffe00) != 0) && ((value & 0xfffffe00) != 0xfffffe00)) 2259 return bfd_reloc_overflow; 2260 value >>= 1; 2261 addend = (addend & ~howto->src_mask) | (value & howto->src_mask); 2262 score_bfd_put_16 (input_bfd, addend, hit_data); 2263 return bfd_reloc_ok; 2264 2265 case R_SCORE_BCMP: 2266 addend = score_bfd_get_32 (input_bfd, hit_data); 2267 offset = (addend & howto->src_mask) << howto->rightshift; 2268 if ((offset & 0x200) != 0) /* Offset is negative. */ 2269 offset |= 0xfffffe00; 2270 value = value - rel_addr + offset; 2271 /* Sign bit + exceed 9 bit. */ 2272 if (((value & 0xfffffe00) != 0) && ((value & 0xfffffe00) != 0xfffffe00)) 2273 return bfd_reloc_overflow; 2274 value >>= howto->rightshift; 2275 addend = (addend & ~howto->src_mask) 2276 | (value & 0x1) 2277 | (((value >> 1) & 0x7) << 7) 2278 | (((value >> 4) & 0x1f) << 21); 2279 score_bfd_put_32 (input_bfd, addend, hit_data); 2280 return bfd_reloc_ok; 2281 2282 case R_SCORE_HI16: 2283 return bfd_reloc_ok; 2284 2285 case R_SCORE_LO16: 2286 hi16_addend = score_bfd_get_32 (input_bfd, hit_data - 4); 2287 hi16_offset = ((((hi16_addend >> 16) & 0x3) << 15) | (hi16_addend & 0x7fff)) >> 1; 2288 addend = score_bfd_get_32 (input_bfd, hit_data); 2289 offset = ((((addend >> 16) & 0x3) << 15) | (addend & 0x7fff)) >> 1; 2290 offset = (hi16_offset << 16) | (offset & 0xffff); 2291 2292 if (!gp_disp_p) 2293 uvalue = value + offset; 2294 else 2295 uvalue = offset + gp - rel_addr + 4; 2296 2297 hi16_offset = (uvalue >> 16) << 1; 2298 hi16_value = (hi16_addend & (~(howto->dst_mask))) 2299 | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000); 2300 score_bfd_put_32 (input_bfd, hi16_value, hit_data - 4); 2301 offset = (uvalue & 0xffff) << 1; 2302 value = (addend & (~(howto->dst_mask))) | (offset & 0x7fff) | ((offset << 1) & 0x30000); 2303 score_bfd_put_32 (input_bfd, value, hit_data); 2304 return bfd_reloc_ok; 2305 2306 case R_SCORE_GP15: 2307 addend = score_bfd_get_32 (input_bfd, hit_data); 2308 offset = addend & 0x7fff; 2309 if ((offset & 0x4000) == 0x4000) 2310 offset |= 0xffffc000; 2311 value = value + offset - gp; 2312 if (((value & 0xffffc000) != 0) && ((value & 0xffffc000) != 0xffffc000)) 2313 return bfd_reloc_overflow; 2314 value = (addend & ~howto->src_mask) | (value & howto->src_mask); 2315 score_bfd_put_32 (input_bfd, value, hit_data); 2316 return bfd_reloc_ok; 2317 2318 case R_SCORE_GOT15: 2319 case R_SCORE_CALL15: 2320 if (local_p) 2321 { 2322 bfd_boolean forced; 2323 2324 /* The special case is when the symbol is forced to be local. We need the 2325 full address in the GOT since no R_SCORE_GOT_LO16 relocation follows. */ 2326 forced = ! score_elf_local_relocation_p (input_bfd, rel, 2327 local_sections, FALSE); 2328 value = score_elf_got16_entry (output_bfd, input_bfd, info, 2329 symbol + addend, forced); 2330 if (value == MINUS_ONE) 2331 return bfd_reloc_outofrange; 2332 value = score_elf_got_offset_from_index (elf_hash_table (info)->dynobj, 2333 output_bfd, input_bfd, value); 2334 } 2335 else 2336 { 2337 value = g; 2338 } 2339 2340 if ((long) value > 0x3fff || (long) value < -0x4000) 2341 return bfd_reloc_overflow; 2342 2343 addend = score_bfd_get_32 (input_bfd, hit_data); 2344 value = (addend & ~howto->dst_mask) | (value & howto->dst_mask); 2345 score_bfd_put_32 (input_bfd, value, hit_data); 2346 return bfd_reloc_ok; 2347 2348 case R_SCORE_GPREL32: 2349 value = (addend + symbol - gp); 2350 value &= howto->dst_mask; 2351 score_bfd_put_32 (input_bfd, value, hit_data); 2352 return bfd_reloc_ok; 2353 2354 case R_SCORE_GOT_LO16: 2355 addend = score_bfd_get_32 (input_bfd, hit_data); 2356 value = (((addend >> 16) & 0x3) << 14) | ((addend & 0x7fff) >> 1); 2357 value += symbol; 2358 value = (addend & (~(howto->dst_mask))) | ((value & 0x3fff) << 1) 2359 | (((value >> 14) & 0x3) << 16); 2360 2361 score_bfd_put_32 (input_bfd, value, hit_data); 2362 return bfd_reloc_ok; 2363 2364 case R_SCORE_DUMMY_HI16: 2365 return bfd_reloc_ok; 2366 2367 case R_SCORE_GNU_VTINHERIT: 2368 case R_SCORE_GNU_VTENTRY: 2369 /* We don't do anything with these at present. */ 2370 return bfd_reloc_continue; 2371 2372 default: 2373 return bfd_reloc_notsupported; 2374 } 2375 } 2376 2377 /* Score backend functions. */ 2378 static 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 bfd *dynobj; 2771 Elf_Internal_Shdr *symtab_hdr; 2772 struct elf_link_hash_entry **sym_hashes; 2773 struct score_got_info *g; 2774 size_t extsymoff; 2775 const Elf_Internal_Rela *rel; 2776 const Elf_Internal_Rela *rel_end; 2777 asection *sgot; 2778 asection *sreloc; 2779 2780 if (bfd_link_relocatable (info)) 2781 return TRUE; 2782 2783 dynobj = elf_hash_table (info)->dynobj; 2784 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 2785 sym_hashes = elf_sym_hashes (abfd); 2786 extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; 2787 2788 if (dynobj == NULL) 2789 { 2790 sgot = NULL; 2791 g = NULL; 2792 } 2793 else 2794 { 2795 sgot = score_elf_got_section (dynobj, FALSE); 2796 if (sgot == NULL) 2797 g = NULL; 2798 else 2799 { 2800 BFD_ASSERT (score_elf_section_data (sgot) != NULL); 2801 g = score_elf_section_data (sgot)->u.got_info; 2802 BFD_ASSERT (g != NULL); 2803 } 2804 } 2805 2806 sreloc = NULL; 2807 rel_end = relocs + sec->reloc_count; 2808 for (rel = relocs; rel < rel_end; ++rel) 2809 { 2810 unsigned long r_symndx; 2811 unsigned int r_type; 2812 struct elf_link_hash_entry *h; 2813 2814 r_symndx = ELF32_R_SYM (rel->r_info); 2815 r_type = ELF32_R_TYPE (rel->r_info); 2816 2817 if (r_symndx < extsymoff) 2818 { 2819 h = NULL; 2820 } 2821 else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr)) 2822 { 2823 _bfd_error_handler 2824 /* xgettext:c-format */ 2825 (_("%B: Malformed reloc detected for section %A"), abfd, sec); 2826 bfd_set_error (bfd_error_bad_value); 2827 return FALSE; 2828 } 2829 else 2830 { 2831 h = sym_hashes[r_symndx - extsymoff]; 2832 2833 /* This may be an indirect symbol created because of a version. */ 2834 if (h != NULL) 2835 { 2836 while (h->root.type == bfd_link_hash_indirect) 2837 h = (struct elf_link_hash_entry *)h->root.u.i.link; 2838 } 2839 } 2840 2841 /* Some relocs require a global offset table. */ 2842 if (dynobj == NULL || sgot == NULL) 2843 { 2844 switch (r_type) 2845 { 2846 case R_SCORE_GOT15: 2847 case R_SCORE_CALL15: 2848 if (dynobj == NULL) 2849 elf_hash_table (info)->dynobj = dynobj = abfd; 2850 if (!score_elf_create_got_section (dynobj, info, FALSE)) 2851 return FALSE; 2852 g = score_elf_got_info (dynobj, &sgot); 2853 break; 2854 case R_SCORE_ABS32: 2855 case R_SCORE_REL32: 2856 if (dynobj == NULL 2857 && (bfd_link_pic (info) || h != NULL) 2858 && (sec->flags & SEC_ALLOC) != 0) 2859 elf_hash_table (info)->dynobj = dynobj = abfd; 2860 break; 2861 default: 2862 break; 2863 } 2864 } 2865 2866 if (!h && (r_type == R_SCORE_GOT_LO16)) 2867 { 2868 if (! score_elf_record_local_got_symbol (abfd, r_symndx, rel->r_addend, g)) 2869 return FALSE; 2870 } 2871 2872 switch (r_type) 2873 { 2874 case R_SCORE_CALL15: 2875 if (h == NULL) 2876 { 2877 _bfd_error_handler 2878 /* xgettext:c-format */ 2879 (_("%B: CALL15 reloc at %#Lx not against global symbol"), 2880 abfd, rel->r_offset); 2881 bfd_set_error (bfd_error_bad_value); 2882 return FALSE; 2883 } 2884 else 2885 { 2886 /* This symbol requires a global offset table entry. */ 2887 if (! score_elf_record_global_got_symbol (h, abfd, info, g)) 2888 return FALSE; 2889 2890 /* We need a stub, not a plt entry for the undefined function. But we record 2891 it as if it needs plt. See _bfd_elf_adjust_dynamic_symbol. */ 2892 h->needs_plt = 1; 2893 h->type = STT_FUNC; 2894 } 2895 break; 2896 case R_SCORE_GOT15: 2897 if (h && ! score_elf_record_global_got_symbol (h, abfd, info, g)) 2898 return FALSE; 2899 break; 2900 case R_SCORE_ABS32: 2901 case R_SCORE_REL32: 2902 if ((bfd_link_pic (info) || h != NULL) 2903 && (sec->flags & SEC_ALLOC) != 0) 2904 { 2905 if (sreloc == NULL) 2906 { 2907 sreloc = score_elf_rel_dyn_section (dynobj, TRUE); 2908 if (sreloc == NULL) 2909 return FALSE; 2910 } 2911 #define SCORE_READONLY_SECTION (SEC_ALLOC | SEC_LOAD | SEC_READONLY) 2912 if (bfd_link_pic (info)) 2913 { 2914 /* When creating a shared object, we must copy these reloc types into 2915 the output file as R_SCORE_REL32 relocs. We make room for this reloc 2916 in the .rel.dyn reloc section. */ 2917 score_elf_allocate_dynamic_relocations (dynobj, 1); 2918 if ((sec->flags & SCORE_READONLY_SECTION) 2919 == SCORE_READONLY_SECTION) 2920 /* We tell the dynamic linker that there are 2921 relocations against the text segment. */ 2922 info->flags |= DF_TEXTREL; 2923 } 2924 else 2925 { 2926 struct score_elf_link_hash_entry *hscore; 2927 2928 /* We only need to copy this reloc if the symbol is 2929 defined in a dynamic object. */ 2930 hscore = (struct score_elf_link_hash_entry *)h; 2931 ++hscore->possibly_dynamic_relocs; 2932 if ((sec->flags & SCORE_READONLY_SECTION) 2933 == SCORE_READONLY_SECTION) 2934 /* We need it to tell the dynamic linker if there 2935 are relocations against the text segment. */ 2936 hscore->readonly_reloc = TRUE; 2937 } 2938 2939 /* Even though we don't directly need a GOT entry for this symbol, 2940 a symbol must have a dynamic symbol table index greater that 2941 DT_SCORE_GOTSYM if there are dynamic relocations against it. */ 2942 if (h != NULL) 2943 { 2944 if (dynobj == NULL) 2945 elf_hash_table (info)->dynobj = dynobj = abfd; 2946 if (! score_elf_create_got_section (dynobj, info, TRUE)) 2947 return FALSE; 2948 g = score_elf_got_info (dynobj, &sgot); 2949 if (! score_elf_record_global_got_symbol (h, abfd, info, g)) 2950 return FALSE; 2951 } 2952 } 2953 break; 2954 2955 /* This relocation describes the C++ object vtable hierarchy. 2956 Reconstruct it for later use during GC. */ 2957 case R_SCORE_GNU_VTINHERIT: 2958 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 2959 return FALSE; 2960 break; 2961 2962 /* This relocation describes which C++ vtable entries are actually 2963 used. Record for later use during GC. */ 2964 case R_SCORE_GNU_VTENTRY: 2965 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) 2966 return FALSE; 2967 break; 2968 default: 2969 break; 2970 } 2971 2972 /* We must not create a stub for a symbol that has relocations 2973 related to taking the function's address. */ 2974 switch (r_type) 2975 { 2976 default: 2977 if (h != NULL) 2978 { 2979 struct score_elf_link_hash_entry *sh; 2980 2981 sh = (struct score_elf_link_hash_entry *) h; 2982 sh->no_fn_stub = TRUE; 2983 } 2984 break; 2985 case R_SCORE_CALL15: 2986 break; 2987 } 2988 } 2989 2990 return TRUE; 2991 } 2992 2993 static bfd_boolean 2994 s3_bfd_score_elf_add_symbol_hook (bfd *abfd, 2995 struct bfd_link_info *info ATTRIBUTE_UNUSED, 2996 Elf_Internal_Sym *sym, 2997 const char **namep ATTRIBUTE_UNUSED, 2998 flagword *flagsp ATTRIBUTE_UNUSED, 2999 asection **secp, 3000 bfd_vma *valp) 3001 { 3002 switch (sym->st_shndx) 3003 { 3004 case SHN_COMMON: 3005 if (sym->st_size > elf_gp_size (abfd)) 3006 break; 3007 /* Fall through. */ 3008 case SHN_SCORE_SCOMMON: 3009 *secp = bfd_make_section_old_way (abfd, ".scommon"); 3010 (*secp)->flags |= SEC_IS_COMMON; 3011 *valp = sym->st_size; 3012 break; 3013 } 3014 3015 return TRUE; 3016 } 3017 3018 static void 3019 s3_bfd_score_elf_symbol_processing (bfd *abfd, asymbol *asym) 3020 { 3021 elf_symbol_type *elfsym; 3022 3023 elfsym = (elf_symbol_type *) asym; 3024 switch (elfsym->internal_elf_sym.st_shndx) 3025 { 3026 case SHN_COMMON: 3027 if (asym->value > elf_gp_size (abfd)) 3028 break; 3029 /* Fall through. */ 3030 case SHN_SCORE_SCOMMON: 3031 if (score_elf_scom_section.name == NULL) 3032 { 3033 /* Initialize the small common section. */ 3034 score_elf_scom_section.name = ".scommon"; 3035 score_elf_scom_section.flags = SEC_IS_COMMON; 3036 score_elf_scom_section.output_section = &score_elf_scom_section; 3037 score_elf_scom_section.symbol = &score_elf_scom_symbol; 3038 score_elf_scom_section.symbol_ptr_ptr = &score_elf_scom_symbol_ptr; 3039 score_elf_scom_symbol.name = ".scommon"; 3040 score_elf_scom_symbol.flags = BSF_SECTION_SYM; 3041 score_elf_scom_symbol.section = &score_elf_scom_section; 3042 score_elf_scom_symbol_ptr = &score_elf_scom_symbol; 3043 } 3044 asym->section = &score_elf_scom_section; 3045 asym->value = elfsym->internal_elf_sym.st_size; 3046 break; 3047 } 3048 } 3049 3050 static int 3051 s3_bfd_score_elf_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED, 3052 const char *name ATTRIBUTE_UNUSED, 3053 Elf_Internal_Sym *sym, 3054 asection *input_sec, 3055 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) 3056 { 3057 /* If we see a common symbol, which implies a relocatable link, then 3058 if a symbol was small common in an input file, mark it as small 3059 common in the output file. */ 3060 if (sym->st_shndx == SHN_COMMON && strcmp (input_sec->name, ".scommon") == 0) 3061 sym->st_shndx = SHN_SCORE_SCOMMON; 3062 3063 return 1; 3064 } 3065 3066 static bfd_boolean 3067 s3_bfd_score_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, 3068 asection *sec, 3069 int *retval) 3070 { 3071 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) 3072 { 3073 *retval = SHN_SCORE_SCOMMON; 3074 return TRUE; 3075 } 3076 3077 return FALSE; 3078 } 3079 3080 /* Adjust a symbol defined by a dynamic object and referenced by a 3081 regular object. The current definition is in some section of the 3082 dynamic object, but we're not including those sections. We have to 3083 change the definition to something the rest of the link can understand. */ 3084 static bfd_boolean 3085 s3_bfd_score_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 3086 struct elf_link_hash_entry *h) 3087 { 3088 bfd *dynobj; 3089 struct score_elf_link_hash_entry *hscore; 3090 asection *s; 3091 3092 dynobj = elf_hash_table (info)->dynobj; 3093 3094 /* Make sure we know what is going on here. */ 3095 BFD_ASSERT (dynobj != NULL 3096 && (h->needs_plt 3097 || h->is_weakalias 3098 || (h->def_dynamic && h->ref_regular && !h->def_regular))); 3099 3100 /* If this symbol is defined in a dynamic object, we need to copy 3101 any R_SCORE_ABS32 or R_SCORE_REL32 relocs against it into the output 3102 file. */ 3103 hscore = (struct score_elf_link_hash_entry *)h; 3104 if (!bfd_link_relocatable (info) 3105 && hscore->possibly_dynamic_relocs != 0 3106 && (h->root.type == bfd_link_hash_defweak || !h->def_regular)) 3107 { 3108 score_elf_allocate_dynamic_relocations (dynobj, hscore->possibly_dynamic_relocs); 3109 if (hscore->readonly_reloc) 3110 /* We tell the dynamic linker that there are relocations 3111 against the text segment. */ 3112 info->flags |= DF_TEXTREL; 3113 } 3114 3115 /* For a function, create a stub, if allowed. */ 3116 if (!hscore->no_fn_stub && h->needs_plt) 3117 { 3118 if (!elf_hash_table (info)->dynamic_sections_created) 3119 return TRUE; 3120 3121 /* If this symbol is not defined in a regular file, then set 3122 the symbol to the stub location. This is required to make 3123 function pointers compare as equal between the normal 3124 executable and the shared library. */ 3125 if (!h->def_regular) 3126 { 3127 /* We need .stub section. */ 3128 s = bfd_get_linker_section (dynobj, SCORE_ELF_STUB_SECTION_NAME); 3129 BFD_ASSERT (s != NULL); 3130 3131 h->root.u.def.section = s; 3132 h->root.u.def.value = s->size; 3133 3134 /* XXX Write this stub address somewhere. */ 3135 h->plt.offset = s->size; 3136 3137 /* Make room for this stub code. */ 3138 s->size += SCORE_FUNCTION_STUB_SIZE; 3139 3140 /* The last half word of the stub will be filled with the index 3141 of this symbol in .dynsym section. */ 3142 return TRUE; 3143 } 3144 } 3145 else if ((h->type == STT_FUNC) && !h->needs_plt) 3146 { 3147 /* This will set the entry for this symbol in the GOT to 0, and 3148 the dynamic linker will take care of this. */ 3149 h->root.u.def.value = 0; 3150 return TRUE; 3151 } 3152 3153 /* If this is a weak symbol, and there is a real definition, the 3154 processor independent code will have arranged for us to see the 3155 real definition first, and we can just use the same value. */ 3156 if (h->is_weakalias) 3157 { 3158 struct elf_link_hash_entry *def = weakdef (h); 3159 BFD_ASSERT (def->root.type == bfd_link_hash_defined); 3160 h->root.u.def.section = def->root.u.def.section; 3161 h->root.u.def.value = def->root.u.def.value; 3162 return TRUE; 3163 } 3164 3165 /* This is a reference to a symbol defined by a dynamic object which 3166 is not a function. */ 3167 return TRUE; 3168 } 3169 3170 /* This function is called after all the input files have been read, 3171 and the input sections have been assigned to output sections. */ 3172 static bfd_boolean 3173 s3_bfd_score_elf_always_size_sections (bfd *output_bfd, 3174 struct bfd_link_info *info) 3175 { 3176 bfd *dynobj; 3177 asection *s; 3178 struct score_got_info *g; 3179 int i; 3180 bfd_size_type loadable_size = 0; 3181 bfd_size_type local_gotno; 3182 bfd *sub; 3183 3184 dynobj = elf_hash_table (info)->dynobj; 3185 if (dynobj == NULL) 3186 /* Relocatable links don't have it. */ 3187 return TRUE; 3188 3189 g = score_elf_got_info (dynobj, &s); 3190 if (s == NULL) 3191 return TRUE; 3192 3193 /* Calculate the total loadable size of the output. That will give us the 3194 maximum number of GOT_PAGE entries required. */ 3195 for (sub = info->input_bfds; sub; sub = sub->link.next) 3196 { 3197 asection *subsection; 3198 3199 for (subsection = sub->sections; 3200 subsection; 3201 subsection = subsection->next) 3202 { 3203 if ((subsection->flags & SEC_ALLOC) == 0) 3204 continue; 3205 loadable_size += ((subsection->size + 0xf) 3206 &~ (bfd_size_type) 0xf); 3207 } 3208 } 3209 3210 /* There has to be a global GOT entry for every symbol with 3211 a dynamic symbol table index of DT_SCORE_GOTSYM or 3212 higher. Therefore, it make sense to put those symbols 3213 that need GOT entries at the end of the symbol table. We 3214 do that here. */ 3215 if (! score_elf_sort_hash_table (info, 1)) 3216 return FALSE; 3217 3218 if (g->global_gotsym != NULL) 3219 i = elf_hash_table (info)->dynsymcount - g->global_gotsym->dynindx; 3220 else 3221 /* If there are no global symbols, or none requiring 3222 relocations, then GLOBAL_GOTSYM will be NULL. */ 3223 i = 0; 3224 3225 /* In the worst case, we'll get one stub per dynamic symbol. */ 3226 loadable_size += SCORE_FUNCTION_STUB_SIZE * i; 3227 3228 /* Assume there are two loadable segments consisting of 3229 contiguous sections. Is 5 enough? */ 3230 local_gotno = (loadable_size >> 16) + 5; 3231 3232 g->local_gotno += local_gotno; 3233 s->size += g->local_gotno * SCORE_ELF_GOT_SIZE (output_bfd); 3234 3235 g->global_gotno = i; 3236 s->size += i * SCORE_ELF_GOT_SIZE (output_bfd); 3237 3238 score_elf_resolve_final_got_entries (g); 3239 3240 if (s->size > SCORE_ELF_GOT_MAX_SIZE (output_bfd)) 3241 { 3242 /* Fixme. Error message or Warning message should be issued here. */ 3243 } 3244 3245 return TRUE; 3246 } 3247 3248 /* Set the sizes of the dynamic sections. */ 3249 static bfd_boolean 3250 s3_bfd_score_elf_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) 3251 { 3252 bfd *dynobj; 3253 asection *s; 3254 bfd_boolean reltext; 3255 3256 dynobj = elf_hash_table (info)->dynobj; 3257 BFD_ASSERT (dynobj != NULL); 3258 3259 if (elf_hash_table (info)->dynamic_sections_created) 3260 { 3261 /* Set the contents of the .interp section to the interpreter. */ 3262 if (bfd_link_executable (info) && !info->nointerp) 3263 { 3264 s = bfd_get_linker_section (dynobj, ".interp"); 3265 BFD_ASSERT (s != NULL); 3266 s->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1; 3267 s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; 3268 } 3269 } 3270 3271 /* The check_relocs and adjust_dynamic_symbol entry points have 3272 determined the sizes of the various dynamic sections. Allocate 3273 memory for them. */ 3274 reltext = FALSE; 3275 for (s = dynobj->sections; s != NULL; s = s->next) 3276 { 3277 const char *name; 3278 3279 if ((s->flags & SEC_LINKER_CREATED) == 0) 3280 continue; 3281 3282 /* It's OK to base decisions on the section name, because none 3283 of the dynobj section names depend upon the input files. */ 3284 name = bfd_get_section_name (dynobj, s); 3285 3286 if (CONST_STRNEQ (name, ".rel")) 3287 { 3288 if (s->size == 0) 3289 { 3290 /* We only strip the section if the output section name 3291 has the same name. Otherwise, there might be several 3292 input sections for this output section. FIXME: This 3293 code is probably not needed these days anyhow, since 3294 the linker now does not create empty output sections. */ 3295 if (s->output_section != NULL 3296 && strcmp (name, 3297 bfd_get_section_name (s->output_section->owner, 3298 s->output_section)) == 0) 3299 s->flags |= SEC_EXCLUDE; 3300 } 3301 else 3302 { 3303 const char *outname; 3304 asection *target; 3305 3306 /* If this relocation section applies to a read only 3307 section, then we probably need a DT_TEXTREL entry. 3308 If the relocation section is .rel.dyn, we always 3309 assert a DT_TEXTREL entry rather than testing whether 3310 there exists a relocation to a read only section or 3311 not. */ 3312 outname = bfd_get_section_name (output_bfd, s->output_section); 3313 target = bfd_get_section_by_name (output_bfd, outname + 4); 3314 if ((target != NULL 3315 && (target->flags & SEC_READONLY) != 0 3316 && (target->flags & SEC_ALLOC) != 0) || strcmp (outname, ".rel.dyn") == 0) 3317 reltext = TRUE; 3318 3319 /* We use the reloc_count field as a counter if we need 3320 to copy relocs into the output file. */ 3321 if (strcmp (name, ".rel.dyn") != 0) 3322 s->reloc_count = 0; 3323 } 3324 } 3325 else if (CONST_STRNEQ (name, ".got")) 3326 { 3327 /* s3_bfd_score_elf_always_size_sections() has already done 3328 most of the work, but some symbols may have been mapped 3329 to versions that we must now resolve in the got_entries 3330 hash tables. */ 3331 } 3332 else if (strcmp (name, SCORE_ELF_STUB_SECTION_NAME) == 0) 3333 { 3334 /* IRIX rld assumes that the function stub isn't at the end 3335 of .text section. So put a dummy. XXX */ 3336 s->size += SCORE_FUNCTION_STUB_SIZE; 3337 } 3338 else if (! CONST_STRNEQ (name, ".init")) 3339 { 3340 /* It's not one of our sections, so don't allocate space. */ 3341 continue; 3342 } 3343 3344 /* Allocate memory for the section contents. */ 3345 s->contents = bfd_zalloc (dynobj, s->size); 3346 if (s->contents == NULL && s->size != 0) 3347 { 3348 bfd_set_error (bfd_error_no_memory); 3349 return FALSE; 3350 } 3351 } 3352 3353 if (elf_hash_table (info)->dynamic_sections_created) 3354 { 3355 /* Add some entries to the .dynamic section. We fill in the 3356 values later, in s3_bfd_score_elf_finish_dynamic_sections, but we 3357 must add the entries now so that we get the correct size for 3358 the .dynamic section. The DT_DEBUG entry is filled in by the 3359 dynamic linker and used by the debugger. */ 3360 3361 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0)) 3362 return FALSE; 3363 3364 if (reltext) 3365 info->flags |= DF_TEXTREL; 3366 3367 if ((info->flags & DF_TEXTREL) != 0) 3368 { 3369 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0)) 3370 return FALSE; 3371 } 3372 3373 if (! SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0)) 3374 return FALSE; 3375 3376 if (score_elf_rel_dyn_section (dynobj, FALSE)) 3377 { 3378 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0)) 3379 return FALSE; 3380 3381 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0)) 3382 return FALSE; 3383 3384 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0)) 3385 return FALSE; 3386 } 3387 3388 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_BASE_ADDRESS, 0)) 3389 return FALSE; 3390 3391 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_LOCAL_GOTNO, 0)) 3392 return FALSE; 3393 3394 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_SYMTABNO, 0)) 3395 return FALSE; 3396 3397 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_UNREFEXTNO, 0)) 3398 return FALSE; 3399 3400 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_GOTSYM, 0)) 3401 return FALSE; 3402 3403 if (!SCORE_ELF_ADD_DYNAMIC_ENTRY (info, DT_SCORE_HIPAGENO, 0)) 3404 return FALSE; 3405 } 3406 3407 return TRUE; 3408 } 3409 3410 static bfd_boolean 3411 s3_bfd_score_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 3412 { 3413 struct elf_link_hash_entry *h; 3414 struct bfd_link_hash_entry *bh; 3415 flagword flags; 3416 asection *s; 3417 3418 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 3419 | SEC_LINKER_CREATED | SEC_READONLY); 3420 3421 /* ABI requests the .dynamic section to be read only. */ 3422 s = bfd_get_linker_section (abfd, ".dynamic"); 3423 if (s != NULL) 3424 { 3425 if (!bfd_set_section_flags (abfd, s, flags)) 3426 return FALSE; 3427 } 3428 3429 /* We need to create .got section. */ 3430 if (!score_elf_create_got_section (abfd, info, FALSE)) 3431 return FALSE; 3432 3433 if (!score_elf_rel_dyn_section (elf_hash_table (info)->dynobj, TRUE)) 3434 return FALSE; 3435 3436 /* Create .stub section. */ 3437 if (bfd_get_linker_section (abfd, SCORE_ELF_STUB_SECTION_NAME) == NULL) 3438 { 3439 s = bfd_make_section_anyway_with_flags (abfd, SCORE_ELF_STUB_SECTION_NAME, 3440 flags | SEC_CODE); 3441 if (s == NULL 3442 || !bfd_set_section_alignment (abfd, s, 2)) 3443 3444 return FALSE; 3445 } 3446 3447 if (!bfd_link_pic (info)) 3448 { 3449 const char *name; 3450 3451 name = "_DYNAMIC_LINK"; 3452 bh = NULL; 3453 if (!(_bfd_generic_link_add_one_symbol 3454 (info, abfd, name, BSF_GLOBAL, bfd_abs_section_ptr, 3455 (bfd_vma) 0, NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh))) 3456 return FALSE; 3457 3458 h = (struct elf_link_hash_entry *)bh; 3459 h->non_elf = 0; 3460 h->def_regular = 1; 3461 h->type = STT_SECTION; 3462 3463 if (!bfd_elf_link_record_dynamic_symbol (info, h)) 3464 return FALSE; 3465 } 3466 3467 return TRUE; 3468 } 3469 3470 3471 /* Finish up dynamic symbol handling. We set the contents of various 3472 dynamic sections here. */ 3473 static bfd_boolean 3474 s3_bfd_score_elf_finish_dynamic_symbol (bfd *output_bfd, 3475 struct bfd_link_info *info, 3476 struct elf_link_hash_entry *h, 3477 Elf_Internal_Sym *sym) 3478 { 3479 bfd *dynobj; 3480 asection *sgot; 3481 struct score_got_info *g; 3482 const char *name; 3483 3484 dynobj = elf_hash_table (info)->dynobj; 3485 3486 if (h->plt.offset != MINUS_ONE) 3487 { 3488 asection *s; 3489 bfd_byte stub[SCORE_FUNCTION_STUB_SIZE]; 3490 3491 /* This symbol has a stub. Set it up. */ 3492 BFD_ASSERT (h->dynindx != -1); 3493 3494 s = bfd_get_linker_section (dynobj, SCORE_ELF_STUB_SECTION_NAME); 3495 BFD_ASSERT (s != NULL); 3496 3497 /* FIXME: Can h->dynindex be more than 64K? */ 3498 if (h->dynindx & 0xffff0000) 3499 return FALSE; 3500 3501 /* Fill the stub. */ 3502 score_bfd_put_32 (output_bfd, STUB_LW, stub); 3503 score_bfd_put_32 (output_bfd, STUB_MOVE, stub + 4); 3504 score_bfd_put_32 (output_bfd, STUB_LI16 | (h->dynindx << 1), stub + 8); 3505 score_bfd_put_32 (output_bfd, STUB_BRL, stub + 12); 3506 3507 BFD_ASSERT (h->plt.offset <= s->size); 3508 memcpy (s->contents + h->plt.offset, stub, SCORE_FUNCTION_STUB_SIZE); 3509 3510 /* Mark the symbol as undefined. plt.offset != -1 occurs 3511 only for the referenced symbol. */ 3512 sym->st_shndx = SHN_UNDEF; 3513 3514 /* The run-time linker uses the st_value field of the symbol 3515 to reset the global offset table entry for this external 3516 to its stub address when unlinking a shared object. */ 3517 sym->st_value = (s->output_section->vma + s->output_offset + h->plt.offset); 3518 } 3519 3520 BFD_ASSERT (h->dynindx != -1 || h->forced_local); 3521 3522 sgot = score_elf_got_section (dynobj, FALSE); 3523 BFD_ASSERT (sgot != NULL); 3524 BFD_ASSERT (score_elf_section_data (sgot) != NULL); 3525 g = score_elf_section_data (sgot)->u.got_info; 3526 BFD_ASSERT (g != NULL); 3527 3528 /* Run through the global symbol table, creating GOT entries for all 3529 the symbols that need them. */ 3530 if (g->global_gotsym != NULL && h->dynindx >= g->global_gotsym->dynindx) 3531 { 3532 bfd_vma offset; 3533 bfd_vma value; 3534 3535 value = sym->st_value; 3536 offset = score_elf_global_got_index (dynobj, h); 3537 score_bfd_put_32 (output_bfd, value, sgot->contents + offset); 3538 } 3539 3540 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ 3541 name = h->root.root.string; 3542 if (h == elf_hash_table (info)->hdynamic 3543 || h == elf_hash_table (info)->hgot) 3544 sym->st_shndx = SHN_ABS; 3545 else if (strcmp (name, "_DYNAMIC_LINK") == 0) 3546 { 3547 sym->st_shndx = SHN_ABS; 3548 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); 3549 sym->st_value = 1; 3550 } 3551 else if (strcmp (name, GP_DISP_LABEL) == 0) 3552 { 3553 sym->st_shndx = SHN_ABS; 3554 sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); 3555 sym->st_value = elf_gp (output_bfd); 3556 } 3557 3558 return TRUE; 3559 } 3560 3561 /* Finish up the dynamic sections. */ 3562 static bfd_boolean 3563 s3_bfd_score_elf_finish_dynamic_sections (bfd *output_bfd, 3564 struct bfd_link_info *info) 3565 { 3566 bfd *dynobj; 3567 asection *sdyn; 3568 asection *sgot; 3569 asection *s; 3570 struct score_got_info *g; 3571 3572 dynobj = elf_hash_table (info)->dynobj; 3573 3574 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 3575 3576 sgot = score_elf_got_section (dynobj, FALSE); 3577 if (sgot == NULL) 3578 g = NULL; 3579 else 3580 { 3581 BFD_ASSERT (score_elf_section_data (sgot) != NULL); 3582 g = score_elf_section_data (sgot)->u.got_info; 3583 BFD_ASSERT (g != NULL); 3584 } 3585 3586 if (elf_hash_table (info)->dynamic_sections_created) 3587 { 3588 bfd_byte *b; 3589 3590 BFD_ASSERT (sdyn != NULL); 3591 BFD_ASSERT (g != NULL); 3592 3593 for (b = sdyn->contents; 3594 b < sdyn->contents + sdyn->size; 3595 b += SCORE_ELF_DYN_SIZE (dynobj)) 3596 { 3597 Elf_Internal_Dyn dyn; 3598 const char *name; 3599 size_t elemsize; 3600 bfd_boolean swap_out_p; 3601 3602 /* Read in the current dynamic entry. */ 3603 (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); 3604 3605 /* Assume that we're going to modify it and write it out. */ 3606 swap_out_p = TRUE; 3607 3608 switch (dyn.d_tag) 3609 { 3610 case DT_RELENT: 3611 dyn.d_un.d_val = SCORE_ELF_REL_SIZE (dynobj); 3612 break; 3613 3614 case DT_STRSZ: 3615 /* Rewrite DT_STRSZ. */ 3616 dyn.d_un.d_val 3617 = _bfd_elf_strtab_size (elf_hash_table (info)->dynstr); 3618 break; 3619 3620 case DT_PLTGOT: 3621 s = elf_hash_table (info)->sgot; 3622 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 3623 break; 3624 3625 case DT_SCORE_BASE_ADDRESS: 3626 s = output_bfd->sections; 3627 BFD_ASSERT (s != NULL); 3628 dyn.d_un.d_ptr = s->vma & ~(bfd_vma) 0xffff; 3629 break; 3630 3631 case DT_SCORE_LOCAL_GOTNO: 3632 dyn.d_un.d_val = g->local_gotno; 3633 break; 3634 3635 case DT_SCORE_UNREFEXTNO: 3636 /* The index into the dynamic symbol table which is the 3637 entry of the first external symbol that is not 3638 referenced within the same object. */ 3639 dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1; 3640 break; 3641 3642 case DT_SCORE_GOTSYM: 3643 if (g->global_gotsym) 3644 { 3645 dyn.d_un.d_val = g->global_gotsym->dynindx; 3646 break; 3647 } 3648 /* In case if we don't have global got symbols we default 3649 to setting DT_SCORE_GOTSYM to the same value as 3650 DT_SCORE_SYMTABNO. */ 3651 /* Fall through. */ 3652 3653 case DT_SCORE_SYMTABNO: 3654 name = ".dynsym"; 3655 elemsize = SCORE_ELF_SYM_SIZE (output_bfd); 3656 s = bfd_get_linker_section (dynobj, name); 3657 dyn.d_un.d_val = s->size / elemsize; 3658 break; 3659 3660 case DT_SCORE_HIPAGENO: 3661 dyn.d_un.d_val = g->local_gotno - SCORE_RESERVED_GOTNO; 3662 break; 3663 3664 default: 3665 swap_out_p = FALSE; 3666 break; 3667 } 3668 3669 if (swap_out_p) 3670 (*get_elf_backend_data (dynobj)->s->swap_dyn_out) (dynobj, &dyn, b); 3671 } 3672 } 3673 3674 /* The first entry of the global offset table will be filled at 3675 runtime. The second entry will be used by some runtime loaders. 3676 This isn't the case of IRIX rld. */ 3677 if (sgot != NULL && sgot->size > 0) 3678 { 3679 score_bfd_put_32 (output_bfd, 0, sgot->contents); 3680 score_bfd_put_32 (output_bfd, 0x80000000, sgot->contents + SCORE_ELF_GOT_SIZE (output_bfd)); 3681 } 3682 3683 if (sgot != NULL) 3684 elf_section_data (sgot->output_section)->this_hdr.sh_entsize 3685 = SCORE_ELF_GOT_SIZE (output_bfd); 3686 3687 3688 /* We need to sort the entries of the dynamic relocation section. */ 3689 s = score_elf_rel_dyn_section (dynobj, FALSE); 3690 3691 if (s != NULL && s->size > (bfd_vma)2 * SCORE_ELF_REL_SIZE (output_bfd)) 3692 { 3693 reldyn_sorting_bfd = output_bfd; 3694 qsort ((Elf32_External_Rel *) s->contents + 1, s->reloc_count - 1, 3695 sizeof (Elf32_External_Rel), score_elf_sort_dynamic_relocs); 3696 } 3697 3698 return TRUE; 3699 } 3700 3701 /* This function set up the ELF section header for a BFD section in preparation for writing 3702 it out. This is where the flags and type fields are set for unusual sections. */ 3703 static bfd_boolean 3704 s3_bfd_score_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, 3705 Elf_Internal_Shdr *hdr, 3706 asection *sec) 3707 { 3708 const char *name; 3709 3710 name = bfd_get_section_name (abfd, sec); 3711 3712 if (strcmp (name, ".got") == 0 3713 || strcmp (name, ".srdata") == 0 3714 || strcmp (name, ".sdata") == 0 3715 || strcmp (name, ".sbss") == 0) 3716 hdr->sh_flags |= SHF_SCORE_GPREL; 3717 3718 return TRUE; 3719 } 3720 3721 /* This function do additional processing on the ELF section header before writing 3722 it out. This is used to set the flags and type fields for some sections. */ 3723 3724 /* assign_file_positions_except_relocs() check section flag and if it is allocatable, 3725 warning message will be issued. backend_fake_section is called before 3726 assign_file_positions_except_relocs(); backend_section_processing after it. so, we 3727 modify section flag there, but not backend_fake_section. */ 3728 static bfd_boolean 3729 s3_bfd_score_elf_section_processing (bfd *abfd ATTRIBUTE_UNUSED, Elf_Internal_Shdr *hdr) 3730 { 3731 if (hdr->bfd_section != NULL) 3732 { 3733 const char *name = bfd_get_section_name (abfd, hdr->bfd_section); 3734 3735 if (strcmp (name, ".sdata") == 0) 3736 { 3737 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_SCORE_GPREL; 3738 hdr->sh_type = SHT_PROGBITS; 3739 } 3740 else if (strcmp (name, ".sbss") == 0) 3741 { 3742 hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_SCORE_GPREL; 3743 hdr->sh_type = SHT_NOBITS; 3744 } 3745 else if (strcmp (name, ".srdata") == 0) 3746 { 3747 hdr->sh_flags |= SHF_ALLOC | SHF_SCORE_GPREL; 3748 hdr->sh_type = SHT_PROGBITS; 3749 } 3750 } 3751 3752 return TRUE; 3753 } 3754 3755 static bfd_boolean 3756 s3_bfd_score_elf_write_section (bfd *output_bfd, asection *sec, bfd_byte *contents) 3757 { 3758 bfd_byte *to, *from, *end; 3759 int i; 3760 3761 if (strcmp (sec->name, ".pdr") != 0) 3762 return FALSE; 3763 3764 if (score_elf_section_data (sec)->u.tdata == NULL) 3765 return FALSE; 3766 3767 to = contents; 3768 end = contents + sec->size; 3769 for (from = contents, i = 0; from < end; from += PDR_SIZE, i++) 3770 { 3771 if ((score_elf_section_data (sec)->u.tdata)[i] == 1) 3772 continue; 3773 3774 if (to != from) 3775 memcpy (to, from, PDR_SIZE); 3776 3777 to += PDR_SIZE; 3778 } 3779 bfd_set_section_contents (output_bfd, sec->output_section, contents, 3780 (file_ptr) sec->output_offset, sec->size); 3781 3782 return TRUE; 3783 } 3784 3785 /* Copy data from a SCORE ELF indirect symbol to its direct symbol, hiding the old 3786 indirect symbol. Process additional relocation information. */ 3787 static void 3788 s3_bfd_score_elf_copy_indirect_symbol (struct bfd_link_info *info, 3789 struct elf_link_hash_entry *dir, 3790 struct elf_link_hash_entry *ind) 3791 { 3792 struct score_elf_link_hash_entry *dirscore, *indscore; 3793 3794 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 3795 3796 if (ind->root.type != bfd_link_hash_indirect) 3797 return; 3798 3799 dirscore = (struct score_elf_link_hash_entry *) dir; 3800 indscore = (struct score_elf_link_hash_entry *) ind; 3801 dirscore->possibly_dynamic_relocs += indscore->possibly_dynamic_relocs; 3802 3803 if (indscore->readonly_reloc) 3804 dirscore->readonly_reloc = TRUE; 3805 3806 if (indscore->no_fn_stub) 3807 dirscore->no_fn_stub = TRUE; 3808 } 3809 3810 /* Remove information about discarded functions from other sections which mention them. */ 3811 static bfd_boolean 3812 s3_bfd_score_elf_discard_info (bfd *abfd, struct elf_reloc_cookie *cookie, 3813 struct bfd_link_info *info) 3814 { 3815 asection *o; 3816 bfd_boolean ret = FALSE; 3817 unsigned char *tdata; 3818 size_t i, skip; 3819 3820 o = bfd_get_section_by_name (abfd, ".pdr"); 3821 if ((!o) || (o->size == 0) || (o->size % PDR_SIZE != 0) 3822 || (o->output_section != NULL && bfd_is_abs_section (o->output_section))) 3823 return FALSE; 3824 3825 tdata = bfd_zmalloc (o->size / PDR_SIZE); 3826 if (!tdata) 3827 return FALSE; 3828 3829 cookie->rels = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, info->keep_memory); 3830 if (!cookie->rels) 3831 { 3832 free (tdata); 3833 return FALSE; 3834 } 3835 3836 cookie->rel = cookie->rels; 3837 cookie->relend = cookie->rels + o->reloc_count; 3838 3839 for (i = 0, skip = 0; i < o->size; i++) 3840 { 3841 if (bfd_elf_reloc_symbol_deleted_p (i * PDR_SIZE, cookie)) 3842 { 3843 tdata[i] = 1; 3844 skip++; 3845 } 3846 } 3847 3848 if (skip != 0) 3849 { 3850 score_elf_section_data (o)->u.tdata = tdata; 3851 o->size -= skip * PDR_SIZE; 3852 ret = TRUE; 3853 } 3854 else 3855 free (tdata); 3856 3857 if (!info->keep_memory) 3858 free (cookie->rels); 3859 3860 return ret; 3861 } 3862 3863 /* Signal that discard_info() has removed the discarded relocations for this section. */ 3864 static bfd_boolean 3865 s3_bfd_score_elf_ignore_discarded_relocs (asection *sec) 3866 { 3867 if (strcmp (sec->name, ".pdr") == 0) 3868 return TRUE; 3869 return FALSE; 3870 } 3871 3872 /* Return the section that should be marked against GC for a given 3873 relocation. */ 3874 static asection * 3875 s3_bfd_score_elf_gc_mark_hook (asection *sec, 3876 struct bfd_link_info *info, 3877 Elf_Internal_Rela *rel, 3878 struct elf_link_hash_entry *h, 3879 Elf_Internal_Sym *sym) 3880 { 3881 if (h != NULL) 3882 switch (ELF32_R_TYPE (rel->r_info)) 3883 { 3884 case R_SCORE_GNU_VTINHERIT: 3885 case R_SCORE_GNU_VTENTRY: 3886 return NULL; 3887 } 3888 3889 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 3890 } 3891 3892 /* Support for core dump NOTE sections. */ 3893 3894 static bfd_boolean 3895 s3_bfd_score_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 3896 { 3897 int offset; 3898 unsigned int raw_size; 3899 3900 switch (note->descsz) 3901 { 3902 default: 3903 return FALSE; 3904 3905 case 148: /* Linux/Score 32-bit. */ 3906 /* pr_cursig */ 3907 elf_tdata (abfd)->core->signal 3908 = score_bfd_get_16 (abfd, note->descdata + 12); 3909 3910 /* pr_pid */ 3911 elf_tdata (abfd)->core->lwpid 3912 = score_bfd_get_32 (abfd, note->descdata + 24); 3913 3914 /* pr_reg */ 3915 offset = 72; 3916 raw_size = 72; 3917 3918 break; 3919 } 3920 3921 /* Make a ".reg/999" section. */ 3922 return _bfd_elfcore_make_pseudosection (abfd, ".reg", raw_size, 3923 note->descpos + offset); 3924 } 3925 3926 static bfd_boolean 3927 s3_bfd_score_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 3928 { 3929 switch (note->descsz) 3930 { 3931 default: 3932 return FALSE; 3933 3934 case 124: /* Linux/Score elf_prpsinfo. */ 3935 elf_tdata (abfd)->core->program 3936 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); 3937 elf_tdata (abfd)->core->command 3938 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); 3939 } 3940 3941 /* Note that for some reason, a spurious space is tacked 3942 onto the end of the args in some (at least one anyway) 3943 implementations, so strip it off if it exists. */ 3944 3945 { 3946 char *command = elf_tdata (abfd)->core->command; 3947 int n = strlen (command); 3948 3949 if (0 < n && command[n - 1] == ' ') 3950 command[n - 1] = '\0'; 3951 } 3952 3953 return TRUE; 3954 } 3955 3956 3957 /* Score BFD functions. */ 3958 static reloc_howto_type * 3959 s3_elf32_score_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code) 3960 { 3961 unsigned int i; 3962 3963 for (i = 0; i < ARRAY_SIZE (elf32_score_reloc_map); i++) 3964 if (elf32_score_reloc_map[i].bfd_reloc_val == code) 3965 return &elf32_score_howto_table[elf32_score_reloc_map[i].elf_reloc_val]; 3966 3967 return NULL; 3968 } 3969 3970 static reloc_howto_type * 3971 elf32_score_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 3972 const char *r_name) 3973 { 3974 unsigned int i; 3975 3976 for (i = 0; 3977 i < (sizeof (elf32_score_howto_table) 3978 / sizeof (elf32_score_howto_table[0])); 3979 i++) 3980 if (elf32_score_howto_table[i].name != NULL 3981 && strcasecmp (elf32_score_howto_table[i].name, r_name) == 0) 3982 return &elf32_score_howto_table[i]; 3983 3984 return NULL; 3985 } 3986 3987 static bfd_boolean 3988 s3_elf32_score_print_private_bfd_data (bfd *abfd, void * ptr) 3989 { 3990 FILE *file = (FILE *) ptr; 3991 3992 BFD_ASSERT (abfd != NULL && ptr != NULL); 3993 3994 /* Print normal ELF private data. */ 3995 _bfd_elf_print_private_bfd_data (abfd, ptr); 3996 3997 /* xgettext:c-format */ 3998 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); 3999 if (elf_elfheader (abfd)->e_flags & EF_SCORE_PIC) 4000 { 4001 fprintf (file, _(" [pic]")); 4002 } 4003 if (elf_elfheader (abfd)->e_flags & EF_SCORE_FIXDEP) 4004 { 4005 fprintf (file, _(" [fix dep]")); 4006 } 4007 fputc ('\n', file); 4008 4009 return TRUE; 4010 } 4011 4012 static bfd_boolean 4013 s3_elf32_score_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) 4014 { 4015 bfd *obfd = info->output_bfd; 4016 flagword in_flags; 4017 flagword out_flags; 4018 4019 if (!_bfd_generic_verify_endian_match (ibfd, info)) 4020 return FALSE; 4021 4022 in_flags = elf_elfheader (ibfd)->e_flags; 4023 out_flags = elf_elfheader (obfd)->e_flags; 4024 4025 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour 4026 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 4027 return TRUE; 4028 4029 in_flags = elf_elfheader (ibfd)->e_flags; 4030 out_flags = elf_elfheader (obfd)->e_flags; 4031 4032 if (! elf_flags_init (obfd)) 4033 { 4034 elf_flags_init (obfd) = TRUE; 4035 elf_elfheader (obfd)->e_flags = in_flags; 4036 4037 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) 4038 && bfd_get_arch_info (obfd)->the_default) 4039 { 4040 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); 4041 } 4042 4043 return TRUE; 4044 } 4045 4046 if (((in_flags & EF_SCORE_PIC) != 0) != ((out_flags & EF_SCORE_PIC) != 0)) 4047 _bfd_error_handler 4048 (_("%B: warning: linking PIC files with non-PIC files"), ibfd); 4049 4050 /* FIXME: Maybe dependency fix compatibility should be checked here. */ 4051 4052 return TRUE; 4053 } 4054 4055 static bfd_boolean 4056 s3_elf32_score_new_section_hook (bfd *abfd, asection *sec) 4057 { 4058 struct _score_elf_section_data *sdata; 4059 bfd_size_type amt = sizeof (*sdata); 4060 4061 sdata = bfd_zalloc (abfd, amt); 4062 if (sdata == NULL) 4063 return FALSE; 4064 sec->used_by_bfd = sdata; 4065 4066 return _bfd_elf_new_section_hook (abfd, sec); 4067 } 4068 4069 /*****************************************************************************/ 4070 4071 /* s3_s7: backend hooks. */ 4072 static void 4073 _bfd_score_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, 4074 arelent *bfd_reloc, 4075 Elf_Internal_Rela *elf_reloc) 4076 { 4077 if (bfd_get_mach (abfd) == bfd_mach_score3) 4078 return s3_bfd_score_info_to_howto (abfd, bfd_reloc, elf_reloc); 4079 else 4080 return s7_bfd_score_info_to_howto (abfd, bfd_reloc, elf_reloc); 4081 } 4082 4083 static bfd_boolean 4084 _bfd_score_elf_relocate_section (bfd *output_bfd, 4085 struct bfd_link_info *info, 4086 bfd *input_bfd, 4087 asection *input_section, 4088 bfd_byte *contents, 4089 Elf_Internal_Rela *relocs, 4090 Elf_Internal_Sym *local_syms, 4091 asection **local_sections) 4092 { 4093 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4094 return s3_bfd_score_elf_relocate_section (output_bfd, 4095 info, input_bfd, input_section, contents, relocs, 4096 local_syms, local_sections); 4097 else 4098 return s7_bfd_score_elf_relocate_section (output_bfd, 4099 info, input_bfd, input_section, contents, relocs, 4100 local_syms, local_sections); 4101 } 4102 4103 static bfd_boolean 4104 _bfd_score_elf_check_relocs (bfd *abfd, 4105 struct bfd_link_info *info, 4106 asection *sec, 4107 const Elf_Internal_Rela *relocs) 4108 { 4109 if (bfd_get_mach (abfd) == bfd_mach_score3) 4110 return s3_bfd_score_elf_check_relocs (abfd, info, sec, relocs); 4111 else 4112 return s7_bfd_score_elf_check_relocs (abfd, info, sec, relocs); 4113 } 4114 4115 static bfd_boolean 4116 _bfd_score_elf_add_symbol_hook (bfd *abfd, 4117 struct bfd_link_info *info ATTRIBUTE_UNUSED, 4118 Elf_Internal_Sym *sym, 4119 const char **namep ATTRIBUTE_UNUSED, 4120 flagword *flagsp ATTRIBUTE_UNUSED, 4121 asection **secp, 4122 bfd_vma *valp) 4123 { 4124 if (bfd_get_mach (abfd) == bfd_mach_score3) 4125 return s3_bfd_score_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, 4126 secp, valp); 4127 else 4128 return s7_bfd_score_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, 4129 secp, valp); 4130 } 4131 4132 static void 4133 _bfd_score_elf_symbol_processing (bfd *abfd, asymbol *asym) 4134 { 4135 if (bfd_get_mach (abfd) == bfd_mach_score3) 4136 return s3_bfd_score_elf_symbol_processing (abfd, asym); 4137 else 4138 return s7_bfd_score_elf_symbol_processing (abfd, asym); 4139 } 4140 4141 static int 4142 _bfd_score_elf_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED, 4143 const char *name ATTRIBUTE_UNUSED, 4144 Elf_Internal_Sym *sym, 4145 asection *input_sec, 4146 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) 4147 { 4148 /* If link a empty .o, then this filed is NULL. */ 4149 if (info->input_bfds == NULL) 4150 { 4151 /* If we see a common symbol, which implies a relocatable link, then 4152 if a symbol was small common in an input file, mark it as small 4153 common in the output file. */ 4154 if (sym->st_shndx == SHN_COMMON && strcmp (input_sec->name, ".scommon") == 0) 4155 sym->st_shndx = SHN_SCORE_SCOMMON; 4156 return 1; 4157 } 4158 4159 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4160 return s3_bfd_score_elf_link_output_symbol_hook (info, name, sym, input_sec, h); 4161 else 4162 return s7_bfd_score_elf_link_output_symbol_hook (info, name, sym, input_sec, h); 4163 } 4164 4165 static bfd_boolean 4166 _bfd_score_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, 4167 asection *sec, 4168 int *retval) 4169 { 4170 if (bfd_get_mach (abfd) == bfd_mach_score3) 4171 return s3_bfd_score_elf_section_from_bfd_section (abfd, sec, retval); 4172 else 4173 return s7_bfd_score_elf_section_from_bfd_section (abfd, sec, retval); 4174 } 4175 4176 static bfd_boolean 4177 _bfd_score_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 4178 struct elf_link_hash_entry *h) 4179 { 4180 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4181 return s3_bfd_score_elf_adjust_dynamic_symbol (info, h); 4182 else 4183 return s7_bfd_score_elf_adjust_dynamic_symbol (info, h); 4184 } 4185 4186 static bfd_boolean 4187 _bfd_score_elf_always_size_sections (bfd *output_bfd, 4188 struct bfd_link_info *info) 4189 { 4190 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4191 return s3_bfd_score_elf_always_size_sections (output_bfd, info); 4192 else 4193 return s7_bfd_score_elf_always_size_sections (output_bfd, info); 4194 } 4195 4196 static bfd_boolean 4197 _bfd_score_elf_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) 4198 { 4199 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4200 return s3_bfd_score_elf_size_dynamic_sections (output_bfd, info); 4201 else 4202 return s7_bfd_score_elf_size_dynamic_sections (output_bfd, info); 4203 } 4204 4205 static bfd_boolean 4206 _bfd_score_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 4207 { 4208 if (bfd_get_mach (abfd) == bfd_mach_score3) 4209 return s3_bfd_score_elf_create_dynamic_sections (abfd, info); 4210 else 4211 return s7_bfd_score_elf_create_dynamic_sections (abfd, info); 4212 } 4213 4214 static bfd_boolean 4215 _bfd_score_elf_finish_dynamic_symbol (bfd *output_bfd, 4216 struct bfd_link_info *info, 4217 struct elf_link_hash_entry *h, 4218 Elf_Internal_Sym *sym) 4219 { 4220 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4221 return s3_bfd_score_elf_finish_dynamic_symbol (output_bfd, info, h, sym); 4222 else 4223 return s7_bfd_score_elf_finish_dynamic_symbol (output_bfd, info, h, sym); 4224 } 4225 4226 static bfd_boolean 4227 _bfd_score_elf_finish_dynamic_sections (bfd *output_bfd, 4228 struct bfd_link_info *info) 4229 { 4230 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4231 return s3_bfd_score_elf_finish_dynamic_sections (output_bfd, info); 4232 else 4233 return s7_bfd_score_elf_finish_dynamic_sections (output_bfd, info); 4234 } 4235 4236 static bfd_boolean 4237 _bfd_score_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, 4238 Elf_Internal_Shdr *hdr, 4239 asection *sec) 4240 { 4241 if (bfd_get_mach (abfd) == bfd_mach_score3) 4242 return s3_bfd_score_elf_fake_sections (abfd, hdr, sec); 4243 else 4244 return s7_bfd_score_elf_fake_sections (abfd, hdr, sec); 4245 } 4246 4247 static bfd_boolean 4248 _bfd_score_elf_section_processing (bfd *abfd ATTRIBUTE_UNUSED, Elf_Internal_Shdr *hdr) 4249 { 4250 if (bfd_get_mach (abfd) == bfd_mach_score3) 4251 return s3_bfd_score_elf_section_processing (abfd, hdr); 4252 else 4253 return s7_bfd_score_elf_section_processing (abfd, hdr); 4254 } 4255 4256 static bfd_boolean 4257 _bfd_score_elf_write_section (bfd *output_bfd, 4258 struct bfd_link_info *link_info ATTRIBUTE_UNUSED, 4259 asection *sec, bfd_byte *contents) 4260 { 4261 if (bfd_get_mach (output_bfd) == bfd_mach_score3) 4262 return s3_bfd_score_elf_write_section (output_bfd, sec, contents); 4263 else 4264 return s7_bfd_score_elf_write_section (output_bfd, sec, contents); 4265 } 4266 4267 static void 4268 _bfd_score_elf_copy_indirect_symbol (struct bfd_link_info *info, 4269 struct elf_link_hash_entry *dir, 4270 struct elf_link_hash_entry *ind) 4271 { 4272 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4273 return s3_bfd_score_elf_copy_indirect_symbol (info, dir, ind); 4274 else 4275 return s7_bfd_score_elf_copy_indirect_symbol (info, dir, ind); 4276 } 4277 4278 static void 4279 _bfd_score_elf_hide_symbol (struct bfd_link_info *info, 4280 struct elf_link_hash_entry *entry, 4281 bfd_boolean force_local) 4282 { 4283 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4284 return s3_bfd_score_elf_hide_symbol (info, entry, force_local); 4285 else 4286 return s7_bfd_score_elf_hide_symbol (info, entry, force_local); 4287 } 4288 4289 static bfd_boolean 4290 _bfd_score_elf_discard_info (bfd *abfd, struct elf_reloc_cookie *cookie, 4291 struct bfd_link_info *info) 4292 { 4293 if (bfd_get_mach (abfd) == bfd_mach_score3) 4294 return s3_bfd_score_elf_discard_info (abfd, cookie, info); 4295 else 4296 return s7_bfd_score_elf_discard_info (abfd, cookie, info); 4297 } 4298 4299 static bfd_boolean 4300 _bfd_score_elf_ignore_discarded_relocs (asection *sec) 4301 { 4302 if (bfd_get_mach (sec->owner) == bfd_mach_score3) 4303 return s3_bfd_score_elf_ignore_discarded_relocs (sec); 4304 else 4305 return s7_bfd_score_elf_ignore_discarded_relocs (sec); 4306 } 4307 4308 static asection * 4309 _bfd_score_elf_gc_mark_hook (asection *sec, 4310 struct bfd_link_info *info, 4311 Elf_Internal_Rela *rel, 4312 struct elf_link_hash_entry *h, 4313 Elf_Internal_Sym *sym) 4314 { 4315 if (bfd_get_mach (info->input_bfds) == bfd_mach_score3) 4316 return s3_bfd_score_elf_gc_mark_hook (sec, info, rel, h, sym); 4317 else 4318 return s7_bfd_score_elf_gc_mark_hook (sec, info, rel, h, sym); 4319 } 4320 4321 static bfd_boolean 4322 _bfd_score_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 4323 { 4324 if (bfd_get_mach (abfd) == bfd_mach_score3) 4325 return s3_bfd_score_elf_grok_prstatus (abfd, note); 4326 else 4327 return s7_bfd_score_elf_grok_prstatus (abfd, note); 4328 } 4329 4330 static bfd_boolean 4331 _bfd_score_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 4332 { 4333 if (bfd_get_mach (abfd) == bfd_mach_score3) 4334 return s3_bfd_score_elf_grok_psinfo (abfd, note); 4335 else 4336 return s7_bfd_score_elf_grok_psinfo (abfd, note); 4337 } 4338 4339 static reloc_howto_type * 4340 elf32_score_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code) 4341 { 4342 /* s3: NOTE!!! 4343 gas will call elf32_score_reloc_type_lookup, and don't write elf file. 4344 So just using score3, but we don't know ld will call this or not. 4345 If so, this way can't work. */ 4346 4347 if (score3) 4348 return s3_elf32_score_reloc_type_lookup (abfd, code); 4349 else 4350 return s7_elf32_score_reloc_type_lookup (abfd, code); 4351 } 4352 4353 /* Create a score elf linker hash table. 4354 This is a copy of _bfd_elf_link_hash_table_create() except with a 4355 different hash table entry creation function. */ 4356 4357 static struct bfd_link_hash_table * 4358 elf32_score_link_hash_table_create (bfd *abfd) 4359 { 4360 struct elf_link_hash_table *ret; 4361 bfd_size_type amt = sizeof (struct elf_link_hash_table); 4362 4363 ret = (struct elf_link_hash_table *) bfd_zmalloc (amt); 4364 if (ret == NULL) 4365 return NULL; 4366 4367 if (!_bfd_elf_link_hash_table_init (ret, abfd, score_elf_link_hash_newfunc, 4368 sizeof (struct score_elf_link_hash_entry), 4369 GENERIC_ELF_DATA)) 4370 { 4371 free (ret); 4372 return NULL; 4373 } 4374 4375 return &ret->root; 4376 } 4377 4378 static bfd_boolean 4379 elf32_score_print_private_bfd_data (bfd *abfd, void * ptr) 4380 { 4381 if (bfd_get_mach (abfd) == bfd_mach_score3) 4382 return s3_elf32_score_print_private_bfd_data (abfd, ptr); 4383 else 4384 return s7_elf32_score_print_private_bfd_data (abfd, ptr); 4385 } 4386 4387 static bfd_boolean 4388 elf32_score_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) 4389 { 4390 if (bfd_get_mach (info->output_bfd) == bfd_mach_score3) 4391 return s3_elf32_score_merge_private_bfd_data (ibfd, info); 4392 else 4393 return s7_elf32_score_merge_private_bfd_data (ibfd, info); 4394 } 4395 4396 static bfd_boolean 4397 elf32_score_new_section_hook (bfd *abfd, asection *sec) 4398 { 4399 if (bfd_get_mach (abfd) == bfd_mach_score3) 4400 return s3_elf32_score_new_section_hook (abfd, sec); 4401 else 4402 return s7_elf32_score_new_section_hook (abfd, sec); 4403 } 4404 4405 4406 /* s3_s7: don't need to split. */ 4407 4408 /* Set the right machine number. */ 4409 static bfd_boolean 4410 _bfd_score_elf_score_object_p (bfd * abfd) 4411 { 4412 int e_set = bfd_mach_score7; 4413 4414 if (elf_elfheader (abfd)->e_machine == EM_SCORE) 4415 { 4416 int e_mach = elf_elfheader (abfd)->e_flags & EF_SCORE_MACH & EF_OMIT_PIC_FIXDD; 4417 switch (e_mach) 4418 { 4419 /* Set default target is score7. */ 4420 default: 4421 case E_SCORE_MACH_SCORE7: 4422 e_set = bfd_mach_score7; 4423 break; 4424 4425 case E_SCORE_MACH_SCORE3: 4426 e_set = bfd_mach_score3; 4427 break; 4428 } 4429 } 4430 4431 return bfd_default_set_arch_mach (abfd, bfd_arch_score, e_set); 4432 } 4433 4434 bfd_boolean 4435 _bfd_score_elf_common_definition (Elf_Internal_Sym *sym) 4436 { 4437 return (sym->st_shndx == SHN_COMMON || sym->st_shndx == SHN_SCORE_SCOMMON); 4438 } 4439 4440 /*****************************************************************************/ 4441 4442 4443 #define USE_REL 1 4444 #define TARGET_LITTLE_SYM score_elf32_le_vec 4445 #define TARGET_LITTLE_NAME "elf32-littlescore" 4446 #define TARGET_BIG_SYM score_elf32_be_vec 4447 #define TARGET_BIG_NAME "elf32-bigscore" 4448 #define ELF_ARCH bfd_arch_score 4449 #define ELF_MACHINE_CODE EM_SCORE 4450 #define ELF_MACHINE_ALT1 EM_SCORE_OLD 4451 #define ELF_MAXPAGESIZE 0x8000 4452 4453 #define elf_info_to_howto 0 4454 #define elf_info_to_howto_rel _bfd_score_info_to_howto 4455 #define elf_backend_relocate_section _bfd_score_elf_relocate_section 4456 #define elf_backend_check_relocs _bfd_score_elf_check_relocs 4457 #define elf_backend_add_symbol_hook _bfd_score_elf_add_symbol_hook 4458 #define elf_backend_symbol_processing _bfd_score_elf_symbol_processing 4459 #define elf_backend_link_output_symbol_hook \ 4460 _bfd_score_elf_link_output_symbol_hook 4461 #define elf_backend_section_from_bfd_section \ 4462 _bfd_score_elf_section_from_bfd_section 4463 #define elf_backend_adjust_dynamic_symbol \ 4464 _bfd_score_elf_adjust_dynamic_symbol 4465 #define elf_backend_always_size_sections \ 4466 _bfd_score_elf_always_size_sections 4467 #define elf_backend_size_dynamic_sections \ 4468 _bfd_score_elf_size_dynamic_sections 4469 #define elf_backend_omit_section_dynsym \ 4470 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) 4471 #define elf_backend_create_dynamic_sections \ 4472 _bfd_score_elf_create_dynamic_sections 4473 #define elf_backend_finish_dynamic_symbol \ 4474 _bfd_score_elf_finish_dynamic_symbol 4475 #define elf_backend_finish_dynamic_sections \ 4476 _bfd_score_elf_finish_dynamic_sections 4477 #define elf_backend_fake_sections _bfd_score_elf_fake_sections 4478 #define elf_backend_section_processing _bfd_score_elf_section_processing 4479 #define elf_backend_write_section _bfd_score_elf_write_section 4480 #define elf_backend_copy_indirect_symbol _bfd_score_elf_copy_indirect_symbol 4481 #define elf_backend_hide_symbol _bfd_score_elf_hide_symbol 4482 #define elf_backend_discard_info _bfd_score_elf_discard_info 4483 #define elf_backend_ignore_discarded_relocs \ 4484 _bfd_score_elf_ignore_discarded_relocs 4485 #define elf_backend_gc_mark_hook _bfd_score_elf_gc_mark_hook 4486 #define elf_backend_grok_prstatus _bfd_score_elf_grok_prstatus 4487 #define elf_backend_grok_psinfo _bfd_score_elf_grok_psinfo 4488 #define elf_backend_can_gc_sections 1 4489 #define elf_backend_want_plt_sym 0 4490 #define elf_backend_got_header_size (4 * SCORE_RESERVED_GOTNO) 4491 #define elf_backend_plt_header_size 0 4492 #define elf_backend_collect TRUE 4493 #define elf_backend_type_change_ok TRUE 4494 #define elf_backend_object_p _bfd_score_elf_score_object_p 4495 4496 #define bfd_elf32_bfd_reloc_type_lookup elf32_score_reloc_type_lookup 4497 #define bfd_elf32_bfd_reloc_name_lookup \ 4498 elf32_score_reloc_name_lookup 4499 #define bfd_elf32_bfd_link_hash_table_create elf32_score_link_hash_table_create 4500 #define bfd_elf32_bfd_print_private_bfd_data elf32_score_print_private_bfd_data 4501 #define bfd_elf32_bfd_merge_private_bfd_data elf32_score_merge_private_bfd_data 4502 #define bfd_elf32_new_section_hook elf32_score_new_section_hook 4503 4504 #include "elf32-target.h" 4505