elf32-or1k.c revision 1.1.1.5
1 /* Or1k-specific support for 32-bit ELF. 2 Copyright (C) 2001-2019 Free Software Foundation, Inc. 3 Contributed for OR32 by Johan Rydberg, jrydberg (at) opencores.org 4 5 PIC parts added by Stefan Kristiansson, stefan.kristiansson (at) saunalahti.fi, 6 largely based on elf32-m32r.c and elf32-microblaze.c. 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, see <http://www.gnu.org/licenses/>. */ 22 23 #include "sysdep.h" 24 #include "bfd.h" 25 #include "libbfd.h" 26 #include "elf-bfd.h" 27 #include "elf/or1k.h" 28 #include "libiberty.h" 29 30 #define N_ONES(X) (((bfd_vma)2 << (X)) - 1) 31 32 #define PLT_ENTRY_SIZE 16 33 34 #define OR1K_MOVHI(D) (0x18000000 | (D << 21)) 35 #define OR1K_ADRP(D) (0x08000000 | (D << 21)) 36 #define OR1K_LWZ(D,A) (0x84000000 | (D << 21) | (A << 16)) 37 #define OR1K_ORI0(D) (0xA8000000 | (D << 21)) 38 #define OR1K_JR(B) (0x44000000 | (B << 11)) 39 #define OR1K_NOP 0x15000000 40 41 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" 42 43 static reloc_howto_type or1k_elf_howto_table[] = 44 { 45 /* This reloc does nothing. */ 46 HOWTO (R_OR1K_NONE, /* type */ 47 0, /* rightshift */ 48 3, /* size (0 = byte, 1 = short, 2 = long) */ 49 0, /* bitsize */ 50 FALSE, /* pc_relative */ 51 0, /* bitpos */ 52 complain_overflow_dont, /* complain_on_overflow */ 53 bfd_elf_generic_reloc, /* special_function */ 54 "R_OR1K_NONE", /* name */ 55 FALSE, /* partial_inplace */ 56 0, /* src_mask */ 57 0, /* dst_mask */ 58 FALSE), /* pcrel_offset */ 59 60 HOWTO (R_OR1K_32, 61 0, /* rightshift */ 62 2, /* size (0 = byte, 1 = short, 2 = long) */ 63 32, /* bitsize */ 64 FALSE, /* pc_relative */ 65 0, /* bitpos */ 66 complain_overflow_unsigned, /* complain_on_overflow */ 67 bfd_elf_generic_reloc, /* special_function */ 68 "R_OR1K_32", /* name */ 69 FALSE, /* partial_inplace */ 70 0, /* src_mask */ 71 0xffffffff, /* dst_mask */ 72 FALSE), /* pcrel_offset */ 73 74 HOWTO (R_OR1K_16, 75 0, /* rightshift */ 76 1, /* size (0 = byte, 1 = short, 2 = long) */ 77 16, /* bitsize */ 78 FALSE, /* pc_relative */ 79 0, /* bitpos */ 80 complain_overflow_unsigned, /* complain_on_overflow */ 81 bfd_elf_generic_reloc, /* special_function */ 82 "R_OR1K_16", /* name */ 83 FALSE, /* partial_inplace */ 84 0, /* src_mask */ 85 0xffff, /* dst_mask */ 86 FALSE), /* pcrel_offset */ 87 88 HOWTO (R_OR1K_8, 89 0, /* rightshift */ 90 0, /* size (0 = byte, 1 = short, 2 = long) */ 91 8, /* bitsize */ 92 FALSE, /* pc_relative */ 93 0, /* bitpos */ 94 complain_overflow_unsigned, /* complain_on_overflow */ 95 bfd_elf_generic_reloc, /* special_function */ 96 "R_OR1K_8", /* name */ 97 FALSE, /* partial_inplace */ 98 0, /* src_mask */ 99 0xff, /* dst_mask */ 100 FALSE), /* pcrel_offset */ 101 102 HOWTO (R_OR1K_LO_16_IN_INSN, /* type */ 103 0, /* rightshift */ 104 2, /* size (0 = byte, 1 = short, 2 = long) */ 105 16, /* bitsize */ 106 FALSE, /* pc_relative */ 107 0, /* bitpos */ 108 complain_overflow_dont, /* complain_on_overflow */ 109 bfd_elf_generic_reloc, /* special_function */ 110 "R_OR1K_LO_16_IN_INSN", /* name */ 111 FALSE, /* partial_inplace */ 112 0, /* src_mask */ 113 0x0000ffff, /* dst_mask */ 114 FALSE), /* pcrel_offset */ 115 116 HOWTO (R_OR1K_HI_16_IN_INSN, /* type */ 117 16, /* rightshift */ 118 2, /* size (0 = byte, 1 = short, 2 = long) */ 119 16, /* bitsize */ 120 FALSE, /* pc_relative */ 121 0, /* bitpos */ 122 complain_overflow_dont, /* complain_on_overflow */ 123 bfd_elf_generic_reloc, /* special_function */ 124 "R_OR1K_HI_16_IN_INSN", /* name */ 125 FALSE, /* partial_inplace */ 126 0, /* src_mask */ 127 0x0000ffff, /* dst_mask */ 128 FALSE), /* pcrel_offset */ 129 130 /* A PC relative 26 bit relocation, right shifted by 2. */ 131 HOWTO (R_OR1K_INSN_REL_26, /* type */ 132 2, /* rightshift */ 133 2, /* size (0 = byte, 1 = short, 2 = long) */ 134 26, /* bitsize */ 135 TRUE, /* pc_relative */ 136 0, /* bitpos */ 137 complain_overflow_signed, /* complain_on_overflow */ 138 bfd_elf_generic_reloc, /* special_function */ 139 "R_OR1K_INSN_REL_26", /* name */ 140 FALSE, /* partial_inplace */ 141 0, /* src_mask */ 142 0x03ffffff, /* dst_mask */ 143 TRUE), /* pcrel_offset */ 144 145 /* GNU extension to record C++ vtable hierarchy. */ 146 HOWTO (R_OR1K_GNU_VTINHERIT, /* type */ 147 0, /* rightshift */ 148 2, /* size (0 = byte, 1 = short, 2 = long) */ 149 0, /* bitsize */ 150 FALSE, /* pc_relative */ 151 0, /* bitpos */ 152 complain_overflow_dont, /* complain_on_overflow */ 153 NULL, /* special_function */ 154 "R_OR1K_GNU_VTINHERIT", /* name */ 155 FALSE, /* partial_inplace */ 156 0, /* src_mask */ 157 0, /* dst_mask */ 158 FALSE), /* pcrel_offset */ 159 160 /* GNU extension to record C++ vtable member usage. */ 161 HOWTO (R_OR1K_GNU_VTENTRY, /* type */ 162 0, /* rightshift */ 163 2, /* size (0 = byte, 1 = short, 2 = long) */ 164 0, /* bitsize */ 165 FALSE, /* pc_relative */ 166 0, /* bitpos */ 167 complain_overflow_dont, /* complain_on_overflow */ 168 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 169 "R_OR1K_GNU_VTENTRY", /* name */ 170 FALSE, /* partial_inplace */ 171 0, /* src_mask */ 172 0, /* dst_mask */ 173 FALSE), /* pcrel_offset */ 174 175 HOWTO (R_OR1K_32_PCREL, 176 0, /* rightshift */ 177 2, /* size (0 = byte, 1 = short, 2 = long) */ 178 32, /* bitsize */ 179 TRUE, /* pc_relative */ 180 0, /* bitpos */ 181 complain_overflow_signed, /* complain_on_overflow */ 182 bfd_elf_generic_reloc, /* special_function */ 183 "R_OR1K_32_PCREL", /* name */ 184 FALSE, /* partial_inplace */ 185 0, /* src_mask */ 186 0xffffffff, /* dst_mask */ 187 TRUE), /* pcrel_offset */ 188 189 HOWTO (R_OR1K_16_PCREL, 190 0, /* rightshift */ 191 1, /* size (0 = byte, 1 = short, 2 = long) */ 192 16, /* bitsize */ 193 TRUE, /* pc_relative */ 194 0, /* bitpos */ 195 complain_overflow_signed, /* complain_on_overflow */ 196 bfd_elf_generic_reloc, /* special_function */ 197 "R_OR1K_16_PCREL", /* name */ 198 FALSE, /* partial_inplace */ 199 0, /* src_mask */ 200 0xffff, /* dst_mask */ 201 TRUE), /* pcrel_offset */ 202 203 HOWTO (R_OR1K_8_PCREL, 204 0, /* rightshift */ 205 0, /* size (0 = byte, 1 = short, 2 = long) */ 206 8, /* bitsize */ 207 TRUE, /* pc_relative */ 208 0, /* bitpos */ 209 complain_overflow_signed, /* complain_on_overflow */ 210 bfd_elf_generic_reloc, /* special_function */ 211 "R_OR1K_8_PCREL", /* name */ 212 FALSE, /* partial_inplace */ 213 0, /* src_mask */ 214 0xff, /* dst_mask */ 215 TRUE), /* pcrel_offset */ 216 217 HOWTO (R_OR1K_GOTPC_HI16, /* Type. */ 218 16, /* Rightshift. */ 219 2, /* Size (0 = byte, 1 = short, 2 = long). */ 220 16, /* Bitsize. */ 221 TRUE, /* PC_relative. */ 222 0, /* Bitpos. */ 223 complain_overflow_dont, /* Complain on overflow. */ 224 bfd_elf_generic_reloc, /* Special Function. */ 225 "R_OR1K_GOTPC_HI16", /* Name. */ 226 FALSE, /* Partial Inplace. */ 227 0, /* Source Mask. */ 228 0xffff, /* Dest Mask. */ 229 TRUE), /* PC relative offset? */ 230 231 HOWTO (R_OR1K_GOTPC_LO16, /* Type. */ 232 0, /* Rightshift. */ 233 2, /* Size (0 = byte, 1 = short, 2 = long). */ 234 16, /* Bitsize. */ 235 TRUE, /* PC_relative. */ 236 0, /* Bitpos. */ 237 complain_overflow_dont, /* Complain on overflow. */ 238 bfd_elf_generic_reloc, /* Special Function. */ 239 "R_OR1K_GOTPC_LO16", /* Name. */ 240 FALSE, /* Partial Inplace. */ 241 0, /* Source Mask. */ 242 0xffff, /* Dest Mask. */ 243 TRUE), /* PC relative offset? */ 244 245 HOWTO (R_OR1K_GOT16, /* type */ 246 0, /* rightshift */ 247 2, /* size (0 = byte, 1 = short, 2 = long) */ 248 16, /* bitsize */ 249 FALSE, /* pc_relative */ 250 0, /* bitpos */ 251 complain_overflow_signed, /* complain_on_overflow */ 252 bfd_elf_generic_reloc, /* special_function */ 253 "R_OR1K_GOT16", /* name */ 254 FALSE, /* partial_inplace */ 255 0, /* src_mask */ 256 0xffff, /* dst_mask */ 257 FALSE), /* pcrel_offset */ 258 259 /* A 26 bit PLT relocation. Shifted by 2. */ 260 HOWTO (R_OR1K_PLT26, /* Type. */ 261 2, /* Rightshift. */ 262 2, /* Size (0 = byte, 1 = short, 2 = long). */ 263 26, /* Bitsize. */ 264 TRUE, /* pc_relative. */ 265 0, /* Bitpos. */ 266 complain_overflow_signed, /* Complain on overflow. */ 267 bfd_elf_generic_reloc, /* Special Function. */ 268 "R_OR1K_PLT26", /* Name. */ 269 FALSE, /* Partial Inplace. */ 270 0, /* Source Mask. */ 271 0x03ffffff, /* Dest Mask. */ 272 TRUE), /* PC relative offset? */ 273 274 HOWTO (R_OR1K_GOTOFF_HI16, /* type */ 275 16, /* rightshift */ 276 2, /* size (0 = byte, 1 = short, 2 = long) */ 277 16, /* bitsize */ 278 FALSE, /* pc_relative */ 279 0, /* bitpos */ 280 complain_overflow_dont, /* complain_on_overflow */ 281 bfd_elf_generic_reloc, /* special_function */ 282 "R_OR1K_GOTOFF_HI16", /* name */ 283 FALSE, /* partial_inplace */ 284 0x0, /* src_mask */ 285 0xffff, /* dst_mask */ 286 FALSE), /* pcrel_offset */ 287 288 HOWTO (R_OR1K_GOTOFF_LO16, /* type */ 289 0, /* rightshift */ 290 2, /* size (0 = byte, 1 = short, 2 = long) */ 291 16, /* bitsize */ 292 FALSE, /* pc_relative */ 293 0, /* bitpos */ 294 complain_overflow_dont, /* complain_on_overflow */ 295 bfd_elf_generic_reloc, /* special_function */ 296 "R_OR1K_GOTOFF_LO16", /* name */ 297 FALSE, /* partial_inplace */ 298 0x0, /* src_mask */ 299 0xffff, /* dst_mask */ 300 FALSE), /* pcrel_offset */ 301 302 HOWTO (R_OR1K_COPY, /* type */ 303 0, /* rightshift */ 304 2, /* size (0 = byte, 1 = short, 2 = long) */ 305 32, /* bitsize */ 306 FALSE, /* pc_relative */ 307 0, /* bitpos */ 308 complain_overflow_bitfield, /* complain_on_overflow */ 309 bfd_elf_generic_reloc, /* special_function */ 310 "R_OR1K_COPY", /* name */ 311 FALSE, /* partial_inplace */ 312 0xffffffff, /* src_mask */ 313 0xffffffff, /* dst_mask */ 314 FALSE), /* pcrel_offset */ 315 316 HOWTO (R_OR1K_GLOB_DAT, /* type */ 317 0, /* rightshift */ 318 2, /* size (0 = byte, 1 = short, 2 = long) */ 319 32, /* bitsize */ 320 FALSE, /* pc_relative */ 321 0, /* bitpos */ 322 complain_overflow_bitfield, /* complain_on_overflow */ 323 bfd_elf_generic_reloc, /* special_function */ 324 "R_OR1K_GLOB_DAT", /* name */ 325 FALSE, /* partial_inplace */ 326 0xffffffff, /* src_mask */ 327 0xffffffff, /* dst_mask */ 328 FALSE), /* pcrel_offset */ 329 330 HOWTO (R_OR1K_JMP_SLOT, /* type */ 331 0, /* rightshift */ 332 2, /* size (0 = byte, 1 = short, 2 = long) */ 333 32, /* bitsize */ 334 FALSE, /* pc_relative */ 335 0, /* bitpos */ 336 complain_overflow_bitfield, /* complain_on_overflow */ 337 bfd_elf_generic_reloc, /* special_function */ 338 "R_OR1K_JMP_SLOT", /* name */ 339 FALSE, /* partial_inplace */ 340 0xffffffff, /* src_mask */ 341 0xffffffff, /* dst_mask */ 342 FALSE), /* pcrel_offset */ 343 344 HOWTO (R_OR1K_RELATIVE, /* type */ 345 0, /* rightshift */ 346 2, /* size (0 = byte, 1 = short, 2 = long) */ 347 32, /* bitsize */ 348 FALSE, /* pc_relative */ 349 0, /* bitpos */ 350 complain_overflow_bitfield, /* complain_on_overflow */ 351 bfd_elf_generic_reloc, /* special_function */ 352 "R_OR1K_RELATIVE", /* name */ 353 FALSE, /* partial_inplace */ 354 0xffffffff, /* src_mask */ 355 0xffffffff, /* dst_mask */ 356 FALSE), /* pcrel_offset */ 357 358 HOWTO (R_OR1K_TLS_GD_HI16, /* type */ 359 16, /* rightshift */ 360 2, /* size (0 = byte, 1 = short, 2 = long) */ 361 16, /* bitsize */ 362 FALSE, /* pc_relative */ 363 0, /* bitpos */ 364 complain_overflow_dont, /* complain_on_overflow */ 365 bfd_elf_generic_reloc, /* special_function */ 366 "R_OR1K_TLS_GD_HI16", /* name */ 367 FALSE, /* partial_inplace */ 368 0x0, /* src_mask */ 369 0xffff, /* dst_mask */ 370 FALSE), /* pcrel_offset */ 371 372 HOWTO (R_OR1K_TLS_GD_LO16, /* type */ 373 0, /* rightshift */ 374 2, /* size (0 = byte, 1 = short, 2 = long) */ 375 16, /* bitsize */ 376 FALSE, /* pc_relative */ 377 0, /* bitpos */ 378 complain_overflow_dont, /* complain_on_overflow */ 379 bfd_elf_generic_reloc, /* special_function */ 380 "R_OR1K_TLS_GD_LO16", /* name */ 381 FALSE, /* partial_inplace */ 382 0x0, /* src_mask */ 383 0xffff, /* dst_mask */ 384 FALSE), /* pcrel_offset */ 385 386 HOWTO (R_OR1K_TLS_LDM_HI16, /* type */ 387 16, /* rightshift */ 388 2, /* size (0 = byte, 1 = short, 2 = long) */ 389 16, /* bitsize */ 390 FALSE, /* pc_relative */ 391 0, /* bitpos */ 392 complain_overflow_dont, /* complain_on_overflow */ 393 bfd_elf_generic_reloc, /* special_function */ 394 "R_OR1K_TLS_LDM_HI16", /* name */ 395 FALSE, /* partial_inplace */ 396 0x0, /* src_mask */ 397 0xffff, /* dst_mask */ 398 FALSE), /* pcrel_offset */ 399 400 HOWTO (R_OR1K_TLS_LDM_LO16, /* type */ 401 0, /* rightshift */ 402 2, /* size (0 = byte, 1 = short, 2 = long) */ 403 16, /* bitsize */ 404 FALSE, /* pc_relative */ 405 0, /* bitpos */ 406 complain_overflow_dont, /* complain_on_overflow */ 407 bfd_elf_generic_reloc, /* special_function */ 408 "R_OR1K_TLS_LDM_LO16", /* name */ 409 FALSE, /* partial_inplace */ 410 0x0, /* src_mask */ 411 0xffff, /* dst_mask */ 412 FALSE), /* pcrel_offset */ 413 414 HOWTO (R_OR1K_TLS_LDO_HI16, /* type */ 415 16, /* rightshift */ 416 2, /* size (0 = byte, 1 = short, 2 = long) */ 417 16, /* bitsize */ 418 FALSE, /* pc_relative */ 419 0, /* bitpos */ 420 complain_overflow_dont, /* complain_on_overflow */ 421 bfd_elf_generic_reloc, /* special_function */ 422 "R_OR1K_TLS_LDO_HI16", /* name */ 423 FALSE, /* partial_inplace */ 424 0x0, /* src_mask */ 425 0xffff, /* dst_mask */ 426 FALSE), /* pcrel_offset */ 427 428 HOWTO (R_OR1K_TLS_LDO_LO16, /* type */ 429 0, /* rightshift */ 430 2, /* size (0 = byte, 1 = short, 2 = long) */ 431 16, /* bitsize */ 432 FALSE, /* pc_relative */ 433 0, /* bitpos */ 434 complain_overflow_dont, /* complain_on_overflow */ 435 bfd_elf_generic_reloc, /* special_function */ 436 "R_OR1K_TLS_LDO_LO16", /* name */ 437 FALSE, /* partial_inplace */ 438 0x0, /* src_mask */ 439 0xffff, /* dst_mask */ 440 FALSE), /* pcrel_offset */ 441 442 HOWTO (R_OR1K_TLS_IE_HI16, /* type */ 443 16, /* rightshift */ 444 2, /* size (0 = byte, 1 = short, 2 = long) */ 445 16, /* bitsize */ 446 FALSE, /* pc_relative */ 447 0, /* bitpos */ 448 complain_overflow_dont, /* complain_on_overflow */ 449 bfd_elf_generic_reloc, /* special_function */ 450 "R_OR1K_TLS_IE_HI16", /* name */ 451 FALSE, /* partial_inplace */ 452 0x0, /* src_mask */ 453 0xffff, /* dst_mask */ 454 FALSE), /* pcrel_offset */ 455 456 HOWTO (R_OR1K_TLS_IE_LO16, /* type */ 457 0, /* rightshift */ 458 2, /* size (0 = byte, 1 = short, 2 = long) */ 459 16, /* bitsize */ 460 FALSE, /* pc_relative */ 461 0, /* bitpos */ 462 complain_overflow_dont, /* complain_on_overflow */ 463 bfd_elf_generic_reloc, /* special_function */ 464 "R_OR1K_TLS_IE_LO16", /* name */ 465 FALSE, /* partial_inplace */ 466 0x0, /* src_mask */ 467 0xffff, /* dst_mask */ 468 FALSE), /* pcrel_offset */ 469 470 HOWTO (R_OR1K_TLS_LE_HI16, /* type */ 471 16, /* rightshift */ 472 2, /* size (0 = byte, 1 = short, 2 = long) */ 473 16, /* bitsize */ 474 FALSE, /* pc_relative */ 475 0, /* bitpos */ 476 complain_overflow_dont, /* complain_on_overflow */ 477 bfd_elf_generic_reloc, /* special_function */ 478 "R_OR1K_TLS_LE_HI16", /* name */ 479 FALSE, /* partial_inplace */ 480 0x0, /* src_mask */ 481 0xffff, /* dst_mask */ 482 FALSE), /* pcrel_offset */ 483 484 HOWTO (R_OR1K_TLS_LE_LO16, /* type */ 485 0, /* rightshift */ 486 2, /* size (0 = byte, 1 = short, 2 = long) */ 487 16, /* bitsize */ 488 FALSE, /* pc_relative */ 489 0, /* bitpos */ 490 complain_overflow_dont, /* complain_on_overflow */ 491 bfd_elf_generic_reloc, /* special_function */ 492 "R_OR1K_TLS_LE_LO16", /* name */ 493 FALSE, /* partial_inplace */ 494 0x0, /* src_mask */ 495 0xffff, /* dst_mask */ 496 FALSE), /* pcrel_offset */ 497 498 HOWTO (R_OR1K_TLS_TPOFF, /* type */ 499 0, /* rightshift */ 500 2, /* size (0 = byte, 1 = short, 2 = long) */ 501 32, /* bitsize */ 502 FALSE, /* pc_relative */ 503 0, /* bitpos */ 504 complain_overflow_bitfield, /* complain_on_overflow */ 505 bfd_elf_generic_reloc, /* special_function */ 506 "R_OR1K_TLS_TPOFF", /* name */ 507 FALSE, /* partial_inplace */ 508 0xffffffff, /* src_mask */ 509 0xffffffff, /* dst_mask */ 510 FALSE), /* pcrel_offset */ 511 512 HOWTO (R_OR1K_TLS_DTPOFF, /* type */ 513 0, /* rightshift */ 514 2, /* size (0 = byte, 1 = short, 2 = long) */ 515 32, /* bitsize */ 516 FALSE, /* pc_relative */ 517 0, /* bitpos */ 518 complain_overflow_bitfield, /* complain_on_overflow */ 519 bfd_elf_generic_reloc, /* special_function */ 520 "R_OR1K_TLS_DTPOFF", /* name */ 521 FALSE, /* partial_inplace */ 522 0xffffffff, /* src_mask */ 523 0xffffffff, /* dst_mask */ 524 FALSE), /* pcrel_offset */ 525 526 HOWTO (R_OR1K_TLS_DTPMOD, /* type */ 527 0, /* rightshift */ 528 2, /* size (0 = byte, 1 = short, 2 = long) */ 529 32, /* bitsize */ 530 FALSE, /* pc_relative */ 531 0, /* bitpos */ 532 complain_overflow_bitfield, /* complain_on_overflow */ 533 bfd_elf_generic_reloc, /* special_function */ 534 "R_OR1K_TLS_DTPMOD", /* name */ 535 FALSE, /* partial_inplace */ 536 0xffffffff, /* src_mask */ 537 0xffffffff, /* dst_mask */ 538 FALSE), /* pcrel_offset */ 539 540 HOWTO (R_OR1K_AHI16, /* type */ 541 16, /* rightshift */ 542 2, /* size (0 = byte, 1 = short, 2 = long) */ 543 16, /* bitsize */ 544 FALSE, /* pc_relative */ 545 0, /* bitpos */ 546 complain_overflow_dont, /* complain_on_overflow */ 547 bfd_elf_generic_reloc, /* special_function */ 548 "R_OR1K_AHI16", /* name */ 549 FALSE, /* partial_inplace */ 550 0x0, /* src_mask */ 551 0xffff, /* dst_mask */ 552 FALSE), /* pcrel_offset */ 553 554 HOWTO (R_OR1K_GOTOFF_AHI16, /* type */ 555 16, /* rightshift */ 556 2, /* size (0 = byte, 1 = short, 2 = long) */ 557 16, /* bitsize */ 558 FALSE, /* pc_relative */ 559 0, /* bitpos */ 560 complain_overflow_dont, /* complain_on_overflow */ 561 bfd_elf_generic_reloc, /* special_function */ 562 "R_OR1K_GOTOFF_AHI16", /* name */ 563 FALSE, /* partial_inplace */ 564 0x0, /* src_mask */ 565 0xffff, /* dst_mask */ 566 FALSE), /* pcrel_offset */ 567 568 HOWTO (R_OR1K_TLS_IE_AHI16, /* type */ 569 16, /* rightshift */ 570 2, /* size (0 = byte, 1 = short, 2 = long) */ 571 16, /* bitsize */ 572 FALSE, /* pc_relative */ 573 0, /* bitpos */ 574 complain_overflow_dont, /* complain_on_overflow */ 575 bfd_elf_generic_reloc, /* special_function */ 576 "R_OR1K_TLS_IE_AHI16", /* name */ 577 FALSE, /* partial_inplace */ 578 0x0, /* src_mask */ 579 0xffff, /* dst_mask */ 580 FALSE), /* pcrel_offset */ 581 582 HOWTO (R_OR1K_TLS_LE_AHI16, /* type */ 583 16, /* rightshift */ 584 2, /* size (0 = byte, 1 = short, 2 = long) */ 585 16, /* bitsize */ 586 FALSE, /* pc_relative */ 587 0, /* bitpos */ 588 complain_overflow_dont, /* complain_on_overflow */ 589 bfd_elf_generic_reloc, /* special_function */ 590 "R_OR1K_TLS_LE_AHI16", /* name */ 591 FALSE, /* partial_inplace */ 592 0x0, /* src_mask */ 593 0xffff, /* dst_mask */ 594 FALSE), /* pcrel_offset */ 595 596 HOWTO (R_OR1K_SLO16, /* type */ 597 0, /* rightshift */ 598 2, /* size (0 = byte, 1 = short, 2 = long) */ 599 16, /* bitsize */ 600 FALSE, /* pc_relative */ 601 0, /* bitpos */ 602 complain_overflow_dont, /* complain_on_overflow */ 603 bfd_elf_generic_reloc, /* special_function */ 604 "R_OR1K_SLO16", /* name */ 605 FALSE, /* partial_inplace */ 606 0x0, /* src_mask */ 607 0xffff, /* dst_mask */ 608 FALSE), /* pcrel_offset */ 609 610 HOWTO (R_OR1K_GOTOFF_SLO16, /* type */ 611 0, /* rightshift */ 612 2, /* size (0 = byte, 1 = short, 2 = long) */ 613 16, /* bitsize */ 614 FALSE, /* pc_relative */ 615 0, /* bitpos */ 616 complain_overflow_dont, /* complain_on_overflow */ 617 bfd_elf_generic_reloc, /* special_function */ 618 "R_OR1K_GOTOFF_SLO16", /* name */ 619 FALSE, /* partial_inplace */ 620 0x0, /* src_mask */ 621 0xffff, /* dst_mask */ 622 FALSE), /* pcrel_offset */ 623 624 HOWTO (R_OR1K_TLS_LE_SLO16, /* type */ 625 0, /* rightshift */ 626 2, /* size (0 = byte, 1 = short, 2 = long) */ 627 16, /* bitsize */ 628 FALSE, /* pc_relative */ 629 0, /* bitpos */ 630 complain_overflow_dont, /* complain_on_overflow */ 631 bfd_elf_generic_reloc, /* special_function */ 632 "R_OR1K_TLS_LE_SLO16", /* name */ 633 FALSE, /* partial_inplace */ 634 0x0, /* src_mask */ 635 0xffff, /* dst_mask */ 636 FALSE), /* pcrel_offset */ 637 638 /* A page relative 21 bit relocation, right shifted by 13, aligned. 639 Note that this is *page* relative, not pc relative. The idea is 640 similar, but normally the section alignment is not such that the 641 assembler can infer a final value, which it attempts to do with 642 pc-relative relocations to local symbols. */ 643 HOWTO (R_OR1K_PCREL_PG21, /* type */ 644 13, /* rightshift */ 645 2, /* size (0 = byte, 1 = short, 2 = long) */ 646 21, /* bitsize */ 647 FALSE, /* pc_relative */ 648 0, /* bitpos */ 649 complain_overflow_signed, /* complain_on_overflow */ 650 bfd_elf_generic_reloc, /* special_function */ 651 "R_OR1K_PCREL_PG21", /* name */ 652 FALSE, /* partial_inplace */ 653 0, /* src_mask */ 654 0x001fffff, /* dst_mask */ 655 TRUE), /* pcrel_offset */ 656 657 HOWTO (R_OR1K_GOT_PG21, /* type */ 658 13, /* rightshift */ 659 2, /* size (0 = byte, 1 = short, 2 = long) */ 660 21, /* bitsize */ 661 FALSE, /* pc_relative */ 662 0, /* bitpos */ 663 complain_overflow_signed, /* complain_on_overflow */ 664 bfd_elf_generic_reloc, /* special_function */ 665 "R_OR1K_GOT_PG21", /* name */ 666 FALSE, /* partial_inplace */ 667 0, /* src_mask */ 668 0x001fffff, /* dst_mask */ 669 TRUE), /* pcrel_offset */ 670 671 HOWTO (R_OR1K_TLS_GD_PG21, /* type */ 672 13, /* rightshift */ 673 2, /* size (0 = byte, 1 = short, 2 = long) */ 674 21, /* bitsize */ 675 FALSE, /* pc_relative */ 676 0, /* bitpos */ 677 complain_overflow_signed, /* complain_on_overflow */ 678 bfd_elf_generic_reloc, /* special_function */ 679 "R_OR1K_TLS_GD_PG21", /* name */ 680 FALSE, /* partial_inplace */ 681 0, /* src_mask */ 682 0x001fffff, /* dst_mask */ 683 TRUE), /* pcrel_offset */ 684 685 HOWTO (R_OR1K_TLS_LDM_PG21, /* type */ 686 13, /* rightshift */ 687 2, /* size (0 = byte, 1 = short, 2 = long) */ 688 21, /* bitsize */ 689 FALSE, /* pc_relative */ 690 0, /* bitpos */ 691 complain_overflow_signed, /* complain_on_overflow */ 692 bfd_elf_generic_reloc, /* special_function */ 693 "R_OR1K_TLS_LDM_PG21", /* name */ 694 FALSE, /* partial_inplace */ 695 0, /* src_mask */ 696 0x001fffff, /* dst_mask */ 697 TRUE), /* pcrel_offset */ 698 699 HOWTO (R_OR1K_TLS_IE_PG21, /* type */ 700 13, /* rightshift */ 701 2, /* size (0 = byte, 1 = short, 2 = long) */ 702 21, /* bitsize */ 703 FALSE, /* pc_relative */ 704 0, /* bitpos */ 705 complain_overflow_signed, /* complain_on_overflow */ 706 bfd_elf_generic_reloc, /* special_function */ 707 "R_OR1K_TLS_IE_PG21", /* name */ 708 FALSE, /* partial_inplace */ 709 0, /* src_mask */ 710 0x001fffff, /* dst_mask */ 711 TRUE), /* pcrel_offset */ 712 713 HOWTO (R_OR1K_LO13, /* type */ 714 0, /* rightshift */ 715 2, /* size (0 = byte, 1 = short, 2 = long) */ 716 16, /* bitsize */ 717 FALSE, /* pc_relative */ 718 0, /* bitpos */ 719 complain_overflow_dont, /* complain_on_overflow */ 720 bfd_elf_generic_reloc, /* special_function */ 721 "R_OR1K_LO13", /* name */ 722 FALSE, /* partial_inplace */ 723 0x0, /* src_mask */ 724 0xffff, /* dst_mask */ 725 FALSE), /* pcrel_offset */ 726 727 HOWTO (R_OR1K_GOT_LO13, /* type */ 728 0, /* rightshift */ 729 2, /* size (0 = byte, 1 = short, 2 = long) */ 730 16, /* bitsize */ 731 FALSE, /* pc_relative */ 732 0, /* bitpos */ 733 complain_overflow_dont, /* complain_on_overflow */ 734 bfd_elf_generic_reloc, /* special_function */ 735 "R_OR1K_GOT_LO13", /* name */ 736 FALSE, /* partial_inplace */ 737 0x0, /* src_mask */ 738 0xffff, /* dst_mask */ 739 FALSE), /* pcrel_offset */ 740 741 HOWTO (R_OR1K_TLS_GD_LO13, /* type */ 742 0, /* rightshift */ 743 2, /* size (0 = byte, 1 = short, 2 = long) */ 744 16, /* bitsize */ 745 FALSE, /* pc_relative */ 746 0, /* bitpos */ 747 complain_overflow_dont, /* complain_on_overflow */ 748 bfd_elf_generic_reloc, /* special_function */ 749 "R_OR1K_TLS_GD_LO13", /* name */ 750 FALSE, /* partial_inplace */ 751 0x0, /* src_mask */ 752 0xffff, /* dst_mask */ 753 FALSE), /* pcrel_offset */ 754 755 HOWTO (R_OR1K_TLS_LDM_LO13, /* type */ 756 0, /* rightshift */ 757 2, /* size (0 = byte, 1 = short, 2 = long) */ 758 16, /* bitsize */ 759 FALSE, /* pc_relative */ 760 0, /* bitpos */ 761 complain_overflow_dont, /* complain_on_overflow */ 762 bfd_elf_generic_reloc, /* special_function */ 763 "R_OR1K_TLD_LDM_LO13", /* name */ 764 FALSE, /* partial_inplace */ 765 0x0, /* src_mask */ 766 0xffff, /* dst_mask */ 767 FALSE), /* pcrel_offset */ 768 769 HOWTO (R_OR1K_TLS_IE_LO13, /* type */ 770 0, /* rightshift */ 771 2, /* size (0 = byte, 1 = short, 2 = long) */ 772 16, /* bitsize */ 773 FALSE, /* pc_relative */ 774 0, /* bitpos */ 775 complain_overflow_dont, /* complain_on_overflow */ 776 bfd_elf_generic_reloc, /* special_function */ 777 "R_OR1K_TLS_IE_LO13", /* name */ 778 FALSE, /* partial_inplace */ 779 0x0, /* src_mask */ 780 0xffff, /* dst_mask */ 781 FALSE), /* pcrel_offset */ 782 783 HOWTO (R_OR1K_SLO13, /* type */ 784 0, /* rightshift */ 785 2, /* size (0 = byte, 1 = short, 2 = long) */ 786 16, /* bitsize */ 787 FALSE, /* pc_relative */ 788 0, /* bitpos */ 789 complain_overflow_dont, /* complain_on_overflow */ 790 bfd_elf_generic_reloc, /* special_function */ 791 "R_OR1K_SLO13", /* name */ 792 FALSE, /* partial_inplace */ 793 0x0, /* src_mask */ 794 0xffff, /* dst_mask */ 795 FALSE), /* pcrel_offset */ 796 797 /* A 26 bit PLT relocation, using ADRP. Shifted by 2. */ 798 HOWTO (R_OR1K_PLTA26, /* Type. */ 799 2, /* Rightshift. */ 800 2, /* Size (0 = byte, 1 = short, 2 = long). */ 801 26, /* Bitsize. */ 802 TRUE, /* pc_relative. */ 803 0, /* Bitpos. */ 804 complain_overflow_signed, /* Complain on overflow. */ 805 bfd_elf_generic_reloc, /* Special Function. */ 806 "R_OR1K_PLTA26", /* Name. */ 807 FALSE, /* Partial Inplace. */ 808 0, /* Source Mask. */ 809 0x03ffffff, /* Dest Mask. */ 810 TRUE), /* PC relative offset? */ 811 }; 812 813 /* Map BFD reloc types to Or1k ELF reloc types. */ 814 815 struct or1k_reloc_map 816 { 817 bfd_reloc_code_real_type bfd_reloc_val; 818 unsigned int or1k_reloc_val; 819 }; 820 821 static const struct or1k_reloc_map or1k_reloc_map[] = 822 { 823 { BFD_RELOC_NONE, R_OR1K_NONE }, 824 { BFD_RELOC_32, R_OR1K_32 }, 825 { BFD_RELOC_16, R_OR1K_16 }, 826 { BFD_RELOC_8, R_OR1K_8 }, 827 { BFD_RELOC_LO16, R_OR1K_LO_16_IN_INSN }, 828 { BFD_RELOC_HI16, R_OR1K_HI_16_IN_INSN }, 829 { BFD_RELOC_HI16_S, R_OR1K_AHI16 }, 830 { BFD_RELOC_OR1K_REL_26, R_OR1K_INSN_REL_26 }, 831 { BFD_RELOC_VTABLE_ENTRY, R_OR1K_GNU_VTENTRY }, 832 { BFD_RELOC_VTABLE_INHERIT, R_OR1K_GNU_VTINHERIT }, 833 { BFD_RELOC_32_PCREL, R_OR1K_32_PCREL }, 834 { BFD_RELOC_16_PCREL, R_OR1K_16_PCREL }, 835 { BFD_RELOC_8_PCREL, R_OR1K_8_PCREL }, 836 { BFD_RELOC_LO16_GOTOFF, R_OR1K_GOTOFF_LO16 }, 837 { BFD_RELOC_HI16_GOTOFF, R_OR1K_GOTOFF_HI16 }, 838 { BFD_RELOC_HI16_S_GOTOFF, R_OR1K_GOTOFF_AHI16 }, 839 { BFD_RELOC_OR1K_GOTPC_HI16, R_OR1K_GOTPC_HI16 }, 840 { BFD_RELOC_OR1K_GOTPC_LO16, R_OR1K_GOTPC_LO16 }, 841 { BFD_RELOC_OR1K_GOT16, R_OR1K_GOT16 }, 842 { BFD_RELOC_OR1K_PLT26, R_OR1K_PLT26 }, 843 { BFD_RELOC_OR1K_GLOB_DAT, R_OR1K_GLOB_DAT }, 844 { BFD_RELOC_OR1K_COPY, R_OR1K_COPY }, 845 { BFD_RELOC_OR1K_JMP_SLOT, R_OR1K_JMP_SLOT }, 846 { BFD_RELOC_OR1K_RELATIVE, R_OR1K_RELATIVE }, 847 { BFD_RELOC_OR1K_TLS_GD_HI16, R_OR1K_TLS_GD_HI16 }, 848 { BFD_RELOC_OR1K_TLS_GD_LO16, R_OR1K_TLS_GD_LO16 }, 849 { BFD_RELOC_OR1K_TLS_LDM_HI16, R_OR1K_TLS_LDM_HI16 }, 850 { BFD_RELOC_OR1K_TLS_LDM_LO16, R_OR1K_TLS_LDM_LO16 }, 851 { BFD_RELOC_OR1K_TLS_LDO_HI16, R_OR1K_TLS_LDO_HI16 }, 852 { BFD_RELOC_OR1K_TLS_LDO_LO16, R_OR1K_TLS_LDO_LO16 }, 853 { BFD_RELOC_OR1K_TLS_IE_HI16, R_OR1K_TLS_IE_HI16 }, 854 { BFD_RELOC_OR1K_TLS_IE_LO16, R_OR1K_TLS_IE_LO16 }, 855 { BFD_RELOC_OR1K_TLS_IE_AHI16, R_OR1K_TLS_IE_AHI16 }, 856 { BFD_RELOC_OR1K_TLS_LE_HI16, R_OR1K_TLS_LE_HI16 }, 857 { BFD_RELOC_OR1K_TLS_LE_LO16, R_OR1K_TLS_LE_LO16 }, 858 { BFD_RELOC_OR1K_TLS_LE_AHI16, R_OR1K_TLS_LE_AHI16 }, 859 { BFD_RELOC_OR1K_SLO16, R_OR1K_SLO16 }, 860 { BFD_RELOC_OR1K_GOTOFF_SLO16, R_OR1K_GOTOFF_SLO16 }, 861 { BFD_RELOC_OR1K_TLS_LE_SLO16, R_OR1K_TLS_LE_SLO16 }, 862 { BFD_RELOC_OR1K_PCREL_PG21, R_OR1K_PCREL_PG21 }, 863 { BFD_RELOC_OR1K_GOT_PG21, R_OR1K_GOT_PG21 }, 864 { BFD_RELOC_OR1K_TLS_GD_PG21, R_OR1K_TLS_GD_PG21 }, 865 { BFD_RELOC_OR1K_TLS_LDM_PG21, R_OR1K_TLS_LDM_PG21 }, 866 { BFD_RELOC_OR1K_TLS_IE_PG21, R_OR1K_TLS_IE_PG21 }, 867 { BFD_RELOC_OR1K_LO13, R_OR1K_LO13 }, 868 { BFD_RELOC_OR1K_GOT_LO13, R_OR1K_GOT_LO13 }, 869 { BFD_RELOC_OR1K_TLS_GD_LO13, R_OR1K_TLS_GD_LO13 }, 870 { BFD_RELOC_OR1K_TLS_LDM_LO13, R_OR1K_TLS_LDM_LO13 }, 871 { BFD_RELOC_OR1K_TLS_IE_LO13, R_OR1K_TLS_IE_LO13 }, 872 { BFD_RELOC_OR1K_SLO13, R_OR1K_SLO13 }, 873 { BFD_RELOC_OR1K_PLTA26, R_OR1K_PLTA26 }, 874 }; 875 876 #define TLS_UNKNOWN 0 877 #define TLS_NONE 1 878 #define TLS_GD 2 879 #define TLS_LD 3 880 #define TLS_IE 4 881 #define TLS_LE 5 882 883 /* ELF linker hash entry. */ 884 struct elf_or1k_link_hash_entry 885 { 886 struct elf_link_hash_entry root; 887 888 /* Track dynamic relocs copied for this symbol. */ 889 struct elf_dyn_relocs *dyn_relocs; 890 891 /* Track type of TLS access. */ 892 unsigned char tls_type; 893 }; 894 895 /* ELF object data. */ 896 struct elf_or1k_obj_tdata 897 { 898 struct elf_obj_tdata root; 899 900 /* tls_type for each local got entry. */ 901 unsigned char *local_tls_type; 902 }; 903 904 #define elf_or1k_tdata(abfd) \ 905 ((struct elf_or1k_obj_tdata *) (abfd)->tdata.any) 906 907 #define elf_or1k_local_tls_type(abfd) \ 908 (elf_or1k_tdata (abfd)->local_tls_type) 909 910 /* ELF linker hash table. */ 911 struct elf_or1k_link_hash_table 912 { 913 struct elf_link_hash_table root; 914 915 /* Small local sym to section mapping cache. */ 916 struct sym_cache sym_sec; 917 918 bfd_boolean saw_plta; 919 }; 920 921 /* Get the ELF linker hash table from a link_info structure. */ 922 #define or1k_elf_hash_table(p) \ 923 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 924 == OR1K_ELF_DATA ? ((struct elf_or1k_link_hash_table *) ((p)->hash)) : NULL) 925 926 static bfd_boolean 927 elf_or1k_mkobject (bfd *abfd) 928 { 929 return bfd_elf_allocate_object (abfd, sizeof (struct elf_or1k_obj_tdata), 930 OR1K_ELF_DATA); 931 } 932 933 /* Create an entry in an or1k ELF linker hash table. */ 934 935 static struct bfd_hash_entry * 936 or1k_elf_link_hash_newfunc (struct bfd_hash_entry *entry, 937 struct bfd_hash_table *table, 938 const char *string) 939 { 940 struct elf_or1k_link_hash_entry *ret = 941 (struct elf_or1k_link_hash_entry *) entry; 942 943 /* Allocate the structure if it has not already been allocated by a 944 subclass. */ 945 if (ret == NULL) 946 ret = bfd_hash_allocate (table, 947 sizeof (struct elf_or1k_link_hash_entry)); 948 if (ret == NULL) 949 return NULL; 950 951 /* Call the allocation method of the superclass. */ 952 ret = ((struct elf_or1k_link_hash_entry *) 953 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, 954 table, string)); 955 if (ret != NULL) 956 { 957 struct elf_or1k_link_hash_entry *eh; 958 959 eh = (struct elf_or1k_link_hash_entry *) ret; 960 eh->dyn_relocs = NULL; 961 eh->tls_type = TLS_UNKNOWN; 962 } 963 964 return (struct bfd_hash_entry *) ret; 965 } 966 967 /* Create an or1k ELF linker hash table. */ 968 969 static struct bfd_link_hash_table * 970 or1k_elf_link_hash_table_create (bfd *abfd) 971 { 972 struct elf_or1k_link_hash_table *ret; 973 bfd_size_type amt = sizeof (struct elf_or1k_link_hash_table); 974 975 ret = bfd_zmalloc (amt); 976 if (ret == NULL) 977 return NULL; 978 979 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, 980 or1k_elf_link_hash_newfunc, 981 sizeof (struct elf_or1k_link_hash_entry), 982 OR1K_ELF_DATA)) 983 { 984 free (ret); 985 return NULL; 986 } 987 988 return &ret->root.root; 989 } 990 991 static reloc_howto_type * 992 or1k_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, 993 bfd_reloc_code_real_type bcode) 994 { 995 unsigned int i; 996 997 for (i = 0; i < ARRAY_SIZE (or1k_reloc_map); i++) 998 if (or1k_reloc_map[i].bfd_reloc_val == bcode) 999 { 1000 unsigned int ocode = or1k_reloc_map[i].or1k_reloc_val; 1001 if (ocode < (unsigned int) R_OR1K_max) 1002 return &or1k_elf_howto_table[ocode]; 1003 else 1004 break; 1005 } 1006 1007 return NULL; 1008 } 1009 1010 static reloc_howto_type * 1011 or1k_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 1012 const char *r_name) 1013 { 1014 unsigned int i; 1015 1016 for (i = 0; i < R_OR1K_max; i++) 1017 if (or1k_elf_howto_table[i].name != NULL 1018 && strcasecmp (or1k_elf_howto_table[i].name, r_name) == 0) 1019 return &or1k_elf_howto_table[i]; 1020 1021 return NULL; 1022 } 1023 1024 /* Set the howto pointer for an Or1k ELF reloc. */ 1025 1026 static bfd_boolean 1027 or1k_info_to_howto_rela (bfd * abfd, 1028 arelent * cache_ptr, 1029 Elf_Internal_Rela * dst) 1030 { 1031 unsigned int r_type; 1032 1033 r_type = ELF32_R_TYPE (dst->r_info); 1034 if (r_type >= (unsigned int) R_OR1K_max) 1035 { 1036 /* xgettext:c-format */ 1037 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), 1038 abfd, r_type); 1039 bfd_set_error (bfd_error_bad_value); 1040 return FALSE; 1041 } 1042 cache_ptr->howto = & or1k_elf_howto_table[r_type]; 1043 return TRUE; 1044 } 1045 1046 1047 /* Return the relocation value for @tpoff relocations.. */ 1048 static bfd_vma 1049 tpoff (struct bfd_link_info *info, bfd_vma address) 1050 { 1051 /* If tls_sec is NULL, we should have signalled an error already. */ 1052 if (elf_hash_table (info)->tls_sec == NULL) 1053 return 0; 1054 1055 /* The thread pointer on or1k stores the address after the TCB where 1056 the data is, just compute the difference. No need to compensate 1057 for the size of TCB. */ 1058 return (address - elf_hash_table (info)->tls_sec->vma); 1059 } 1060 1061 /* Like _bfd_final_link_relocate, but handles non-contiguous fields. */ 1062 1063 static bfd_reloc_status_type 1064 or1k_final_link_relocate (reloc_howto_type *howto, bfd *input_bfd, 1065 asection *input_section, bfd_byte *contents, 1066 bfd_vma offset, bfd_vma value) 1067 { 1068 bfd_reloc_status_type status = bfd_reloc_ok; 1069 int size = bfd_get_reloc_size (howto); 1070 bfd_vma x, place; 1071 1072 /* Sanity check the address. */ 1073 if (offset + size > bfd_get_section_limit_octets (input_bfd, input_section)) 1074 return bfd_reloc_outofrange; 1075 1076 place = (input_section->output_section->vma 1077 + input_section->output_offset 1078 + (howto->pcrel_offset ? offset : 0)); 1079 1080 switch (howto->type) 1081 { 1082 case R_OR1K_AHI16: 1083 case R_OR1K_GOTOFF_AHI16: 1084 case R_OR1K_TLS_IE_AHI16: 1085 case R_OR1K_TLS_LE_AHI16: 1086 /* Adjust the operand to match with a signed LO16. */ 1087 value += 0x8000; 1088 break; 1089 1090 case R_OR1K_INSN_REL_26: 1091 value -= place; 1092 /* Diagnose mis-aligned branch targets. */ 1093 if (value & 3) 1094 status = bfd_reloc_dangerous; 1095 break; 1096 1097 case R_OR1K_PCREL_PG21: 1098 case R_OR1K_GOT_PG21: 1099 case R_OR1K_TLS_GD_PG21: 1100 case R_OR1K_TLS_LDM_PG21: 1101 case R_OR1K_TLS_IE_PG21: 1102 value = (value & -8192) - (place & -8192); 1103 break; 1104 1105 case R_OR1K_LO13: 1106 case R_OR1K_GOT_LO13: 1107 case R_OR1K_TLS_GD_LO13: 1108 case R_OR1K_TLS_LDM_LO13: 1109 case R_OR1K_TLS_IE_LO13: 1110 case R_OR1K_SLO13: 1111 value &= 8191; 1112 break; 1113 1114 default: 1115 if (howto->pc_relative) 1116 value -= place; 1117 break; 1118 } 1119 1120 status = bfd_check_overflow (howto->complain_on_overflow, 1121 howto->bitsize, 1122 howto->rightshift, 1123 bfd_arch_bits_per_address (input_bfd), 1124 value); 1125 value >>= howto->rightshift; 1126 1127 /* If we're overwriting the entire destination, 1128 then no need to read the current contents. */ 1129 if (size == 0 || howto->dst_mask == N_ONES (size)) 1130 x = 0; 1131 else 1132 { 1133 BFD_ASSERT (size == 4); 1134 x = bfd_get_32 (input_bfd, contents + offset); 1135 } 1136 1137 switch (howto->type) 1138 { 1139 case R_OR1K_SLO16: 1140 case R_OR1K_GOTOFF_SLO16: 1141 case R_OR1K_TLS_LE_SLO16: 1142 case R_OR1K_SLO13: 1143 /* The split imm16 field used for stores. */ 1144 x = (x & ~0x3e007ff) | ((value & 0xf800) << 10) | (value & 0x7ff); 1145 break; 1146 1147 default: 1148 { 1149 bfd_vma fieldmask = howto->dst_mask; 1150 value <<= howto->bitpos; 1151 x = (x & ~fieldmask) | (value & fieldmask); 1152 } 1153 break; 1154 } 1155 1156 /* Put the relocated value back in the object file. */ 1157 switch (size) 1158 { 1159 case 0: 1160 break; 1161 case 1: 1162 bfd_put_8 (input_bfd, x, contents + offset); 1163 break; 1164 case 2: 1165 bfd_put_16 (input_bfd, x, contents + offset); 1166 break; 1167 case 4: 1168 bfd_put_32 (input_bfd, x, contents + offset); 1169 break; 1170 #ifdef BFD64 1171 case 8: 1172 bfd_put_64 (input_bfd, x, contents + offset); 1173 break; 1174 #endif 1175 default: 1176 _bfd_error_handler 1177 (_("%pB: Cannot handle relocation value size of %d"), 1178 input_bfd, size); 1179 abort (); 1180 } 1181 return status; 1182 } 1183 1184 /* Relocate an Or1k ELF section. 1185 1186 The RELOCATE_SECTION function is called by the new ELF backend linker 1187 to handle the relocations for a section. 1188 1189 The relocs are always passed as Rela structures; if the section 1190 actually uses Rel structures, the r_addend field will always be 1191 zero. 1192 1193 This function is responsible for adjusting the section contents as 1194 necessary, and (if using Rela relocs and generating a relocatable 1195 output file) adjusting the reloc addend as necessary. 1196 1197 This function does not have to worry about setting the reloc 1198 address or the reloc symbol index. 1199 1200 LOCAL_SYMS is a pointer to the swapped in local symbols. 1201 1202 LOCAL_SECTIONS is an array giving the section in the input file 1203 corresponding to the st_shndx field of each local symbol. 1204 1205 The global hash table entry for the global symbols can be found 1206 via elf_sym_hashes (input_bfd). 1207 1208 When generating relocatable output, this function must handle 1209 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 1210 going to be the section symbol corresponding to the output 1211 section, which means that the addend must be adjusted 1212 accordingly. */ 1213 1214 static bfd_boolean 1215 or1k_elf_relocate_section (bfd *output_bfd, 1216 struct bfd_link_info *info, 1217 bfd *input_bfd, 1218 asection *input_section, 1219 bfd_byte *contents, 1220 Elf_Internal_Rela *relocs, 1221 Elf_Internal_Sym *local_syms, 1222 asection **local_sections) 1223 { 1224 Elf_Internal_Shdr *symtab_hdr; 1225 struct elf_link_hash_entry **sym_hashes; 1226 Elf_Internal_Rela *rel; 1227 Elf_Internal_Rela *relend; 1228 struct elf_or1k_link_hash_table *htab = or1k_elf_hash_table (info); 1229 bfd *dynobj; 1230 asection *sreloc; 1231 bfd_vma *local_got_offsets; 1232 asection *sgot, *splt; 1233 bfd_vma plt_base, got_base, got_sym_value; 1234 bfd_boolean ret_val = TRUE; 1235 1236 if (htab == NULL) 1237 return FALSE; 1238 1239 dynobj = htab->root.dynobj; 1240 local_got_offsets = elf_local_got_offsets (input_bfd); 1241 1242 sreloc = elf_section_data (input_section)->sreloc; 1243 1244 splt = htab->root.splt; 1245 plt_base = 0; 1246 if (splt != NULL) 1247 plt_base = splt->output_section->vma + splt->output_offset; 1248 1249 sgot = htab->root.sgot; 1250 got_sym_value = got_base = 0; 1251 if (sgot != NULL) 1252 { 1253 struct elf_link_hash_entry *hgot = htab->root.hgot; 1254 got_sym_value = (hgot->root.u.def.value 1255 + hgot->root.u.def.section->output_section->vma 1256 + hgot->root.u.def.section->output_offset); 1257 got_base = sgot->output_section->vma + sgot->output_offset; 1258 } 1259 1260 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 1261 sym_hashes = elf_sym_hashes (input_bfd); 1262 relend = relocs + input_section->reloc_count; 1263 1264 for (rel = relocs; rel < relend; rel++) 1265 { 1266 reloc_howto_type *howto; 1267 unsigned long r_symndx; 1268 Elf_Internal_Sym *sym; 1269 asection *sec; 1270 struct elf_link_hash_entry *h; 1271 bfd_vma relocation; 1272 bfd_reloc_status_type r; 1273 const char *name = NULL; 1274 int r_type; 1275 1276 r_type = ELF32_R_TYPE (rel->r_info); 1277 r_symndx = ELF32_R_SYM (rel->r_info); 1278 1279 if (r_type == R_OR1K_GNU_VTINHERIT 1280 || r_type == R_OR1K_GNU_VTENTRY) 1281 continue; 1282 1283 if (r_type < 0 || r_type >= (int) R_OR1K_max) 1284 { 1285 _bfd_error_handler 1286 (_("%pB: unknown relocation type %d"), 1287 input_bfd, (int) r_type); 1288 bfd_set_error (bfd_error_bad_value); 1289 ret_val = FALSE; 1290 continue; 1291 } 1292 1293 howto = or1k_elf_howto_table + ELF32_R_TYPE (rel->r_info); 1294 h = NULL; 1295 sym = NULL; 1296 sec = NULL; 1297 1298 if (r_symndx < symtab_hdr->sh_info) 1299 { 1300 sym = local_syms + r_symndx; 1301 sec = local_sections[r_symndx]; 1302 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 1303 1304 name = bfd_elf_string_from_elf_section 1305 (input_bfd, symtab_hdr->sh_link, sym->st_name); 1306 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; 1307 } 1308 else 1309 { 1310 bfd_boolean unresolved_reloc, warned, ignored; 1311 1312 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 1313 r_symndx, symtab_hdr, sym_hashes, 1314 h, sec, relocation, 1315 unresolved_reloc, warned, ignored); 1316 name = h->root.root.string; 1317 } 1318 1319 if (sec != NULL && discarded_section (sec)) 1320 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 1321 rel, 1, relend, howto, 0, contents); 1322 1323 if (bfd_link_relocatable (info)) 1324 continue; 1325 1326 switch (howto->type) 1327 { 1328 case R_OR1K_PLT26: 1329 case R_OR1K_PLTA26: 1330 /* If the call is not local, redirect the branch to the PLT. 1331 Otherwise do nothing to send the branch to the symbol direct. */ 1332 if (!SYMBOL_CALLS_LOCAL (info, h) 1333 && h->plt.offset != (bfd_vma) -1) 1334 relocation = plt_base + h->plt.offset; 1335 1336 /* Addend should be zero. */ 1337 if (rel->r_addend != 0) 1338 { 1339 _bfd_error_handler 1340 (_("%pB: addend should be zero for plt relocations"), 1341 input_bfd); 1342 bfd_set_error (bfd_error_bad_value); 1343 ret_val = FALSE; 1344 } 1345 break; 1346 1347 case R_OR1K_GOT16: 1348 case R_OR1K_GOT_PG21: 1349 case R_OR1K_GOT_LO13: 1350 { 1351 bfd_vma off; 1352 1353 /* Relocation is to the entry for this symbol 1354 in the global offset table. */ 1355 BFD_ASSERT (sgot != NULL); 1356 if (h != NULL) 1357 { 1358 bfd_boolean dyn; 1359 1360 off = h->got.offset; 1361 BFD_ASSERT (off != (bfd_vma) -1); 1362 1363 dyn = htab->root.dynamic_sections_created; 1364 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 1365 bfd_link_pic (info), 1366 h) 1367 || (bfd_link_pic (info) 1368 && SYMBOL_REFERENCES_LOCAL (info, h))) 1369 { 1370 /* This is actually a static link, or it is a -Bsymbolic 1371 link and the symbol is defined locally, or the symbol 1372 was forced to be local because of a version file. 1373 We must initialize this entry in the GOT. Since the 1374 offset must always be a multiple of 4, we use the least 1375 significant bit to record whether we have initialized 1376 it already. 1377 1378 When doing a dynamic link, we create a .rela.got 1379 relocation entry to initialize the value. This 1380 is done in the finish_dynamic_symbol routine. */ 1381 if ((off & 1) != 0) 1382 off &= ~1; 1383 else 1384 { 1385 /* Write entry in GOT. */ 1386 bfd_put_32 (output_bfd, relocation, 1387 sgot->contents + off); 1388 /* Mark GOT entry as having been written. */ 1389 h->got.offset |= 1; 1390 } 1391 } 1392 } 1393 else 1394 { 1395 bfd_byte *loc; 1396 1397 BFD_ASSERT (local_got_offsets != NULL 1398 && local_got_offsets[r_symndx] != (bfd_vma) -1); 1399 1400 /* Get offset into GOT table. */ 1401 off = local_got_offsets[r_symndx]; 1402 1403 /* The offset must always be a multiple of 4. We use 1404 the least significant bit to record whether we have 1405 already processed this entry. */ 1406 if ((off & 1) != 0) 1407 off &= ~1; 1408 else 1409 { 1410 /* Write entry in GOT. */ 1411 bfd_put_32 (output_bfd, relocation, sgot->contents + off); 1412 if (bfd_link_pic (info)) 1413 { 1414 asection *srelgot; 1415 Elf_Internal_Rela outrel; 1416 1417 /* We need to generate a R_OR1K_RELATIVE reloc 1418 for the dynamic linker. */ 1419 srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); 1420 BFD_ASSERT (srelgot != NULL); 1421 1422 outrel.r_offset = got_base + off; 1423 outrel.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE); 1424 outrel.r_addend = relocation; 1425 loc = srelgot->contents; 1426 loc += (srelgot->reloc_count 1427 * sizeof (Elf32_External_Rela)); 1428 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); 1429 ++srelgot->reloc_count; 1430 } 1431 local_got_offsets[r_symndx] |= 1; 1432 } 1433 } 1434 1435 /* The GOT_PG21 and GOT_LO13 relocs are pc-relative, 1436 while the GOT16 reloc is GOT relative. */ 1437 relocation = got_base + off; 1438 if (r_type == R_OR1K_GOT16) 1439 relocation -= got_sym_value; 1440 1441 /* Addend should be zero. */ 1442 if (rel->r_addend != 0) 1443 { 1444 _bfd_error_handler 1445 (_("%pB: addend should be zero for got relocations"), 1446 input_bfd); 1447 bfd_set_error (bfd_error_bad_value); 1448 ret_val = FALSE; 1449 } 1450 } 1451 break; 1452 1453 case R_OR1K_GOTOFF_LO16: 1454 case R_OR1K_GOTOFF_HI16: 1455 case R_OR1K_GOTOFF_AHI16: 1456 case R_OR1K_GOTOFF_SLO16: 1457 /* Relocation is offset from GOT. */ 1458 BFD_ASSERT (sgot != NULL); 1459 if (!SYMBOL_REFERENCES_LOCAL (info, h)) 1460 { 1461 _bfd_error_handler 1462 (_("%pB: gotoff relocation against dynamic symbol %s"), 1463 input_bfd, h->root.root.string); 1464 ret_val = FALSE; 1465 bfd_set_error (bfd_error_bad_value); 1466 } 1467 relocation -= got_sym_value; 1468 break; 1469 1470 case R_OR1K_INSN_REL_26: 1471 case R_OR1K_PCREL_PG21: 1472 case R_OR1K_LO13: 1473 case R_OR1K_SLO13: 1474 /* For a non-shared link, these will reference either the plt 1475 or a .dynbss copy of the symbol. */ 1476 if (bfd_link_pic (info) && !SYMBOL_REFERENCES_LOCAL (info, h)) 1477 { 1478 _bfd_error_handler 1479 (_("%pB: pc-relative relocation against dynamic symbol %s"), 1480 input_bfd, name); 1481 ret_val = FALSE; 1482 bfd_set_error (bfd_error_bad_value); 1483 } 1484 break; 1485 1486 case R_OR1K_HI_16_IN_INSN: 1487 case R_OR1K_LO_16_IN_INSN: 1488 case R_OR1K_AHI16: 1489 case R_OR1K_SLO16: 1490 if (bfd_link_pic (info)) 1491 { 1492 _bfd_error_handler 1493 (_("%pB: non-pic relocation against symbol %s"), 1494 input_bfd, name); 1495 ret_val = FALSE; 1496 bfd_set_error (bfd_error_bad_value); 1497 } 1498 break; 1499 1500 case R_OR1K_32: 1501 /* R_OR1K_16? */ 1502 { 1503 /* r_symndx will be STN_UNDEF (zero) only for relocs against symbols 1504 from removed linkonce sections, or sections discarded by 1505 a linker script. */ 1506 if (r_symndx == STN_UNDEF 1507 || (input_section->flags & SEC_ALLOC) == 0) 1508 break; 1509 1510 /* Emit a direct relocation if the symbol is dynamic, 1511 or a RELATIVE reloc for shared objects. We can omit 1512 RELATIVE relocs to local undefweak symbols. */ 1513 if (bfd_link_pic (info) 1514 ? (h == NULL 1515 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 1516 || h->root.type != bfd_link_hash_undefweak) 1517 : (h != NULL 1518 && h->dynindx != -1 1519 && !h->non_got_ref 1520 && ((h->def_dynamic && !h->def_regular) 1521 || h->root.type == bfd_link_hash_undefweak 1522 || h->root.type == bfd_link_hash_undefined))) 1523 { 1524 Elf_Internal_Rela outrel; 1525 bfd_byte *loc; 1526 bfd_boolean skip; 1527 1528 /* When generating a shared object, these relocations 1529 are copied into the output file to be resolved at run 1530 time. */ 1531 1532 BFD_ASSERT (sreloc != NULL); 1533 1534 skip = FALSE; 1535 1536 outrel.r_offset = 1537 _bfd_elf_section_offset (output_bfd, info, input_section, 1538 rel->r_offset); 1539 if (outrel.r_offset == (bfd_vma) -1) 1540 skip = TRUE; 1541 else if (outrel.r_offset == (bfd_vma) -2) 1542 skip = TRUE; 1543 outrel.r_offset += (input_section->output_section->vma 1544 + input_section->output_offset); 1545 1546 if (skip) 1547 memset (&outrel, 0, sizeof outrel); 1548 else if (SYMBOL_REFERENCES_LOCAL (info, h)) 1549 { 1550 outrel.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE); 1551 outrel.r_addend = relocation + rel->r_addend; 1552 } 1553 else 1554 { 1555 BFD_ASSERT (h->dynindx != -1); 1556 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 1557 outrel.r_addend = rel->r_addend; 1558 } 1559 1560 loc = sreloc->contents; 1561 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); 1562 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); 1563 break; 1564 } 1565 break; 1566 } 1567 1568 case R_OR1K_TLS_LDM_HI16: 1569 case R_OR1K_TLS_LDM_LO16: 1570 case R_OR1K_TLS_LDM_PG21: 1571 case R_OR1K_TLS_LDM_LO13: 1572 case R_OR1K_TLS_LDO_HI16: 1573 case R_OR1K_TLS_LDO_LO16: 1574 /* TODO: implement support for local dynamic. */ 1575 BFD_FAIL (); 1576 _bfd_error_handler 1577 (_("%pB: support for local dynamic not implemented"), 1578 input_bfd); 1579 bfd_set_error (bfd_error_bad_value); 1580 return FALSE; 1581 1582 case R_OR1K_TLS_GD_HI16: 1583 case R_OR1K_TLS_GD_LO16: 1584 case R_OR1K_TLS_GD_PG21: 1585 case R_OR1K_TLS_GD_LO13: 1586 case R_OR1K_TLS_IE_HI16: 1587 case R_OR1K_TLS_IE_LO16: 1588 case R_OR1K_TLS_IE_PG21: 1589 case R_OR1K_TLS_IE_LO13: 1590 case R_OR1K_TLS_IE_AHI16: 1591 { 1592 bfd_vma gotoff; 1593 Elf_Internal_Rela rela; 1594 bfd_byte *loc; 1595 int dynamic; 1596 1597 sreloc = bfd_get_section_by_name (dynobj, ".rela.got"); 1598 1599 /* Mark as TLS related GOT entry by setting 1600 bit 2 as well as bit 1. */ 1601 if (h != NULL) 1602 { 1603 gotoff = h->got.offset; 1604 h->got.offset |= 3; 1605 } 1606 else 1607 { 1608 gotoff = local_got_offsets[r_symndx]; 1609 local_got_offsets[r_symndx] |= 3; 1610 } 1611 1612 /* Only process the relocation once. */ 1613 if (gotoff & 1) 1614 { 1615 relocation = sgot->output_offset + (gotoff & ~3); 1616 break; 1617 } 1618 1619 BFD_ASSERT (elf_hash_table (info)->hgot == NULL 1620 || elf_hash_table (info)->hgot->root.u.def.value == 0); 1621 1622 /* Dynamic entries will require relocations. if we do not need 1623 them we will just use the default R_OR1K_NONE and 1624 not set anything. */ 1625 dynamic = bfd_link_pic (info) 1626 || (sec && (sec->flags & SEC_ALLOC) != 0 1627 && h != NULL 1628 && (h->root.type == bfd_link_hash_defweak || !h->def_regular)); 1629 1630 /* Shared GD. */ 1631 if (dynamic 1632 && (howto->type == R_OR1K_TLS_GD_HI16 1633 || howto->type == R_OR1K_TLS_GD_LO16 1634 || howto->type == R_OR1K_TLS_GD_PG21 1635 || howto->type == R_OR1K_TLS_GD_LO13)) 1636 { 1637 int i; 1638 1639 /* Add DTPMOD and DTPOFF GOT and rela entries. */ 1640 for (i = 0; i < 2; ++i) 1641 { 1642 rela.r_offset = got_base + gotoff + i*4; 1643 if (h != NULL && h->dynindx != -1) 1644 { 1645 rela.r_info = ELF32_R_INFO (h->dynindx, 1646 (i == 0 ? R_OR1K_TLS_DTPMOD : R_OR1K_TLS_DTPOFF)); 1647 rela.r_addend = 0; 1648 } 1649 else 1650 { 1651 rela.r_info = ELF32_R_INFO (0, 1652 (i == 0 ? R_OR1K_TLS_DTPMOD : R_OR1K_TLS_DTPOFF)); 1653 rela.r_addend = tpoff (info, relocation); 1654 } 1655 1656 loc = sreloc->contents; 1657 loc += sreloc->reloc_count++ * 1658 sizeof (Elf32_External_Rela); 1659 1660 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 1661 bfd_put_32 (output_bfd, 0, sgot->contents + gotoff + i*4); 1662 } 1663 } 1664 /* Static GD. */ 1665 else if (howto->type == R_OR1K_TLS_GD_HI16 1666 || howto->type == R_OR1K_TLS_GD_LO16 1667 || howto->type == R_OR1K_TLS_GD_PG21 1668 || howto->type == R_OR1K_TLS_GD_LO13) 1669 { 1670 bfd_put_32 (output_bfd, 1, sgot->contents + gotoff); 1671 bfd_put_32 (output_bfd, tpoff (info, relocation), 1672 sgot->contents + gotoff + 4); 1673 } 1674 /* Shared IE. */ 1675 else if (dynamic) 1676 { 1677 /* Add TPOFF GOT and rela entries. */ 1678 rela.r_offset = got_base + gotoff; 1679 if (h != NULL && h->dynindx != -1) 1680 { 1681 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_TLS_TPOFF); 1682 rela.r_addend = 0; 1683 } 1684 else 1685 { 1686 rela.r_info = ELF32_R_INFO (0, R_OR1K_TLS_TPOFF); 1687 rela.r_addend = tpoff (info, relocation); 1688 } 1689 1690 loc = sreloc->contents; 1691 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); 1692 1693 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 1694 bfd_put_32 (output_bfd, 0, sgot->contents + gotoff); 1695 } 1696 /* Static IE. */ 1697 else 1698 { 1699 bfd_put_32 (output_bfd, tpoff (info, relocation), 1700 sgot->contents + gotoff); 1701 } 1702 1703 /* The PG21 and LO13 relocs are pc-relative, while the 1704 rest are GOT relative. */ 1705 relocation = got_base + gotoff; 1706 if (!(r_type == R_OR1K_TLS_GD_PG21 1707 || r_type == R_OR1K_TLS_GD_LO13 1708 || r_type == R_OR1K_TLS_IE_PG21 1709 || r_type == R_OR1K_TLS_IE_LO13)) 1710 relocation -= got_sym_value; 1711 } 1712 break; 1713 1714 case R_OR1K_TLS_LE_HI16: 1715 case R_OR1K_TLS_LE_LO16: 1716 case R_OR1K_TLS_LE_AHI16: 1717 case R_OR1K_TLS_LE_SLO16: 1718 /* Relocation is offset from TP. */ 1719 relocation = tpoff (info, relocation); 1720 break; 1721 1722 case R_OR1K_TLS_DTPMOD: 1723 case R_OR1K_TLS_DTPOFF: 1724 case R_OR1K_TLS_TPOFF: 1725 /* These are resolved dynamically on load and shouldn't 1726 be used as linker input. */ 1727 BFD_FAIL (); 1728 _bfd_error_handler 1729 (_("%pB: will not resolve runtime TLS relocation"), 1730 input_bfd); 1731 bfd_set_error (bfd_error_bad_value); 1732 return FALSE; 1733 1734 default: 1735 break; 1736 } 1737 1738 r = or1k_final_link_relocate (howto, input_bfd, input_section, contents, 1739 rel->r_offset, relocation + rel->r_addend); 1740 1741 if (r != bfd_reloc_ok) 1742 { 1743 const char *msg = NULL; 1744 1745 switch (r) 1746 { 1747 case bfd_reloc_overflow: 1748 (*info->callbacks->reloc_overflow) 1749 (info, (h ? &h->root : NULL), name, howto->name, 1750 (bfd_vma) 0, input_bfd, input_section, rel->r_offset); 1751 break; 1752 1753 case bfd_reloc_undefined: 1754 (*info->callbacks->undefined_symbol) 1755 (info, name, input_bfd, input_section, rel->r_offset, TRUE); 1756 break; 1757 1758 case bfd_reloc_outofrange: 1759 msg = _("internal error: out of range error"); 1760 break; 1761 1762 case bfd_reloc_notsupported: 1763 msg = _("internal error: unsupported relocation error"); 1764 break; 1765 1766 case bfd_reloc_dangerous: 1767 msg = _("internal error: dangerous relocation"); 1768 break; 1769 1770 default: 1771 msg = _("internal error: unknown error"); 1772 break; 1773 } 1774 1775 if (msg) 1776 (*info->callbacks->warning) (info, msg, name, input_bfd, 1777 input_section, rel->r_offset); 1778 } 1779 } 1780 1781 return ret_val; 1782 } 1783 1784 /* Return the section that should be marked against GC for a given 1785 relocation. */ 1786 1787 static asection * 1788 or1k_elf_gc_mark_hook (asection *sec, 1789 struct bfd_link_info *info, 1790 Elf_Internal_Rela *rel, 1791 struct elf_link_hash_entry *h, 1792 Elf_Internal_Sym *sym) 1793 { 1794 if (h != NULL) 1795 switch (ELF32_R_TYPE (rel->r_info)) 1796 { 1797 case R_OR1K_GNU_VTINHERIT: 1798 case R_OR1K_GNU_VTENTRY: 1799 return NULL; 1800 } 1801 1802 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 1803 } 1804 1805 /* Look through the relocs for a section during the first phase. */ 1806 1807 static bfd_boolean 1808 or1k_elf_check_relocs (bfd *abfd, 1809 struct bfd_link_info *info, 1810 asection *sec, 1811 const Elf_Internal_Rela *relocs) 1812 { 1813 Elf_Internal_Shdr *symtab_hdr; 1814 struct elf_link_hash_entry **sym_hashes; 1815 const Elf_Internal_Rela *rel; 1816 1817 const Elf_Internal_Rela *rel_end; 1818 struct elf_or1k_link_hash_table *htab; 1819 bfd *dynobj; 1820 asection *sreloc = NULL; 1821 1822 if (bfd_link_relocatable (info)) 1823 return TRUE; 1824 1825 /* Don't do anything special with non-loaded, non-alloced sections. 1826 In particular, any relocs in such sections should not affect GOT 1827 and PLT reference counting (ie. we don't allow them to create GOT 1828 or PLT entries), there's no possibility or desire to optimize TLS 1829 relocs, and there's not much point in propagating relocs to shared 1830 libs that the dynamic linker won't relocate. */ 1831 if ((sec->flags & SEC_ALLOC) == 0) 1832 return TRUE; 1833 1834 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 1835 sym_hashes = elf_sym_hashes (abfd); 1836 1837 htab = or1k_elf_hash_table (info); 1838 if (htab == NULL) 1839 return FALSE; 1840 1841 dynobj = htab->root.dynobj; 1842 1843 rel_end = relocs + sec->reloc_count; 1844 for (rel = relocs; rel < rel_end; rel++) 1845 { 1846 struct elf_link_hash_entry *h; 1847 unsigned long r_symndx; 1848 unsigned char tls_type; 1849 int r_type; 1850 1851 r_symndx = ELF32_R_SYM (rel->r_info); 1852 if (r_symndx < symtab_hdr->sh_info) 1853 h = NULL; 1854 else 1855 { 1856 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 1857 while (h->root.type == bfd_link_hash_indirect 1858 || h->root.type == bfd_link_hash_warning) 1859 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1860 } 1861 1862 r_type = ELF32_R_TYPE (rel->r_info); 1863 switch (r_type) 1864 { 1865 case R_OR1K_TLS_GD_HI16: 1866 case R_OR1K_TLS_GD_LO16: 1867 case R_OR1K_TLS_GD_PG21: 1868 case R_OR1K_TLS_GD_LO13: 1869 tls_type = TLS_GD; 1870 break; 1871 case R_OR1K_TLS_LDM_HI16: 1872 case R_OR1K_TLS_LDM_LO16: 1873 case R_OR1K_TLS_LDM_PG21: 1874 case R_OR1K_TLS_LDM_LO13: 1875 case R_OR1K_TLS_LDO_HI16: 1876 case R_OR1K_TLS_LDO_LO16: 1877 tls_type = TLS_LD; 1878 break; 1879 case R_OR1K_TLS_IE_HI16: 1880 case R_OR1K_TLS_IE_LO16: 1881 case R_OR1K_TLS_IE_PG21: 1882 case R_OR1K_TLS_IE_LO13: 1883 case R_OR1K_TLS_IE_AHI16: 1884 tls_type = TLS_IE; 1885 break; 1886 case R_OR1K_TLS_LE_HI16: 1887 case R_OR1K_TLS_LE_LO16: 1888 case R_OR1K_TLS_LE_AHI16: 1889 case R_OR1K_TLS_LE_SLO16: 1890 tls_type = TLS_LE; 1891 break; 1892 default: 1893 tls_type = TLS_NONE; 1894 } 1895 1896 /* Record TLS type. */ 1897 if (h != NULL) 1898 ((struct elf_or1k_link_hash_entry *) h)->tls_type = tls_type; 1899 else 1900 { 1901 unsigned char *local_tls_type; 1902 1903 /* This is a TLS type record for a local symbol. */ 1904 local_tls_type = (unsigned char *) elf_or1k_local_tls_type (abfd); 1905 if (local_tls_type == NULL) 1906 { 1907 bfd_size_type size; 1908 1909 size = symtab_hdr->sh_info; 1910 local_tls_type = bfd_zalloc (abfd, size); 1911 if (local_tls_type == NULL) 1912 return FALSE; 1913 elf_or1k_local_tls_type (abfd) = local_tls_type; 1914 } 1915 local_tls_type[r_symndx] = tls_type; 1916 } 1917 1918 switch (r_type) 1919 { 1920 /* This relocation describes the C++ object vtable hierarchy. 1921 Reconstruct it for later use during GC. */ 1922 case R_OR1K_GNU_VTINHERIT: 1923 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 1924 return FALSE; 1925 break; 1926 1927 /* This relocation describes which C++ vtable entries are actually 1928 used. Record for later use during GC. */ 1929 case R_OR1K_GNU_VTENTRY: 1930 BFD_ASSERT (h != NULL); 1931 if (h != NULL 1932 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 1933 return FALSE; 1934 break; 1935 1936 /* This relocation requires .plt entry. */ 1937 case R_OR1K_PLTA26: 1938 htab->saw_plta = TRUE; 1939 /* FALLTHRU */ 1940 case R_OR1K_PLT26: 1941 if (h != NULL) 1942 { 1943 h->needs_plt = 1; 1944 h->plt.refcount += 1; 1945 } 1946 break; 1947 1948 case R_OR1K_GOT16: 1949 case R_OR1K_GOT_PG21: 1950 case R_OR1K_GOT_LO13: 1951 case R_OR1K_TLS_GD_HI16: 1952 case R_OR1K_TLS_GD_LO16: 1953 case R_OR1K_TLS_GD_PG21: 1954 case R_OR1K_TLS_GD_LO13: 1955 case R_OR1K_TLS_IE_HI16: 1956 case R_OR1K_TLS_IE_LO16: 1957 case R_OR1K_TLS_IE_PG21: 1958 case R_OR1K_TLS_IE_LO13: 1959 case R_OR1K_TLS_IE_AHI16: 1960 if (h != NULL) 1961 h->got.refcount += 1; 1962 else 1963 { 1964 bfd_signed_vma *local_got_refcounts; 1965 1966 /* This is a global offset table entry for a local symbol. */ 1967 local_got_refcounts = elf_local_got_refcounts (abfd); 1968 if (local_got_refcounts == NULL) 1969 { 1970 bfd_size_type size; 1971 1972 size = symtab_hdr->sh_info; 1973 size *= sizeof (bfd_signed_vma); 1974 local_got_refcounts = bfd_zalloc (abfd, size); 1975 if (local_got_refcounts == NULL) 1976 return FALSE; 1977 elf_local_got_refcounts (abfd) = local_got_refcounts; 1978 } 1979 local_got_refcounts[r_symndx] += 1; 1980 } 1981 /* FALLTHRU */ 1982 1983 case R_OR1K_GOTOFF_HI16: 1984 case R_OR1K_GOTOFF_LO16: 1985 case R_OR1K_GOTOFF_AHI16: 1986 case R_OR1K_GOTOFF_SLO16: 1987 if (htab->root.sgot == NULL) 1988 { 1989 if (dynobj == NULL) 1990 htab->root.dynobj = dynobj = abfd; 1991 if (!_bfd_elf_create_got_section (dynobj, info)) 1992 return FALSE; 1993 } 1994 break; 1995 1996 case R_OR1K_INSN_REL_26: 1997 case R_OR1K_HI_16_IN_INSN: 1998 case R_OR1K_LO_16_IN_INSN: 1999 case R_OR1K_AHI16: 2000 case R_OR1K_SLO16: 2001 case R_OR1K_32: 2002 case R_OR1K_PCREL_PG21: 2003 case R_OR1K_LO13: 2004 case R_OR1K_SLO13: 2005 { 2006 if (h != NULL && !bfd_link_pic (info)) 2007 { 2008 /* We may need a copy reloc. */ 2009 h->non_got_ref = 1; 2010 2011 /* We may also need a .plt entry. */ 2012 h->plt.refcount += 1; 2013 if (r_type != R_OR1K_INSN_REL_26) 2014 h->pointer_equality_needed = 1; 2015 } 2016 2017 /* If we are creating a shared library, and this is a reloc 2018 against a global symbol, or a non PC relative reloc 2019 against a local symbol, then we need to copy the reloc 2020 into the shared library. However, if we are linking with 2021 -Bsymbolic, we do not need to copy a reloc against a 2022 global symbol which is defined in an object we are 2023 including in the link (i.e., DEF_REGULAR is set). At 2024 this point we have not seen all the input files, so it is 2025 possible that DEF_REGULAR is not set now but will be set 2026 later (it is never cleared). In case of a weak definition, 2027 DEF_REGULAR may be cleared later by a strong definition in 2028 a shared library. We account for that possibility below by 2029 storing information in the relocs_copied field of the hash 2030 table entry. A similar situation occurs when creating 2031 shared libraries and symbol visibility changes render the 2032 symbol local. 2033 2034 If on the other hand, we are creating an executable, we 2035 may need to keep relocations for symbols satisfied by a 2036 dynamic library if we manage to avoid copy relocs for the 2037 symbol. */ 2038 2039 if ((bfd_link_pic (info) 2040 && (sec->flags & SEC_ALLOC) != 0 2041 && (r_type != R_OR1K_INSN_REL_26 2042 || (h != NULL 2043 && (!SYMBOLIC_BIND (info, h) 2044 || h->root.type == bfd_link_hash_defweak 2045 || !h->def_regular)))) 2046 || (!bfd_link_pic (info) 2047 && (sec->flags & SEC_ALLOC) != 0 2048 && h != NULL 2049 && (h->root.type == bfd_link_hash_defweak 2050 || !h->def_regular))) 2051 { 2052 struct elf_dyn_relocs *p; 2053 struct elf_dyn_relocs **head; 2054 2055 /* When creating a shared object, we must copy these 2056 relocs into the output file. We create a reloc 2057 section in dynobj and make room for the reloc. */ 2058 if (sreloc == NULL) 2059 { 2060 const char *name; 2061 unsigned int strndx = elf_elfheader (abfd)->e_shstrndx; 2062 unsigned int shnam = _bfd_elf_single_rel_hdr (sec)->sh_name; 2063 2064 name = bfd_elf_string_from_elf_section (abfd, strndx, shnam); 2065 if (name == NULL) 2066 return FALSE; 2067 2068 if (strncmp (name, ".rela", 5) != 0 2069 || strcmp (bfd_get_section_name (abfd, sec), 2070 name + 5) != 0) 2071 { 2072 _bfd_error_handler 2073 /* xgettext:c-format */ 2074 (_("%pB: bad relocation section name `%s\'"), 2075 abfd, name); 2076 } 2077 2078 if (htab->root.dynobj == NULL) 2079 htab->root.dynobj = abfd; 2080 dynobj = htab->root.dynobj; 2081 2082 sreloc = bfd_get_section_by_name (dynobj, name); 2083 if (sreloc == NULL) 2084 { 2085 sreloc = _bfd_elf_make_dynamic_reloc_section 2086 (sec, dynobj, 2, abfd, /*rela?*/ TRUE); 2087 2088 if (sreloc == NULL) 2089 return FALSE; 2090 } 2091 elf_section_data (sec)->sreloc = sreloc; 2092 } 2093 2094 /* If this is a global symbol, we count the number of 2095 relocations we need for this symbol. */ 2096 if (h != NULL) 2097 head = &((struct elf_or1k_link_hash_entry *) h)->dyn_relocs; 2098 else 2099 { 2100 /* Track dynamic relocs needed for local syms too. 2101 We really need local syms available to do this 2102 easily. Oh well. */ 2103 2104 asection *s; 2105 Elf_Internal_Sym *isym; 2106 void *vpp; 2107 2108 isym = bfd_sym_from_r_symndx (&htab->sym_sec, 2109 abfd, r_symndx); 2110 if (isym == NULL) 2111 return FALSE; 2112 2113 s = bfd_section_from_elf_index (abfd, isym->st_shndx); 2114 if (s == NULL) 2115 return FALSE; 2116 2117 vpp = &elf_section_data (s)->local_dynrel; 2118 head = (struct elf_dyn_relocs **) vpp; 2119 } 2120 2121 p = *head; 2122 if (p == NULL || p->sec != sec) 2123 { 2124 bfd_size_type amt = sizeof *p; 2125 p = ((struct elf_dyn_relocs *) 2126 bfd_alloc (htab->root.dynobj, amt)); 2127 if (p == NULL) 2128 return FALSE; 2129 p->next = *head; 2130 *head = p; 2131 p->sec = sec; 2132 p->count = 0; 2133 p->pc_count = 0; 2134 } 2135 2136 p->count += 1; 2137 if (r_type == R_OR1K_INSN_REL_26) 2138 p->pc_count += 1; 2139 } 2140 } 2141 break; 2142 } 2143 } 2144 2145 return TRUE; 2146 } 2147 2148 static void 2149 or1k_write_plt_entry (bfd *output_bfd, bfd_byte *contents, unsigned insn1, 2150 unsigned insn2, unsigned insn3, unsigned insnj) 2151 { 2152 unsigned nodelay = elf_elfheader (output_bfd)->e_flags & EF_OR1K_NODELAY; 2153 unsigned insn4; 2154 2155 /* Honor the no-delay-slot setting. */ 2156 if (insn3 == OR1K_NOP) 2157 { 2158 insn4 = insn3; 2159 if (nodelay) 2160 insn3 = insnj; 2161 else 2162 insn3 = insn2, insn2 = insnj; 2163 } 2164 else 2165 { 2166 if (nodelay) 2167 insn4 = insnj; 2168 else 2169 insn4 = insn3, insn3 = insnj; 2170 } 2171 2172 bfd_put_32 (output_bfd, insn1, contents); 2173 bfd_put_32 (output_bfd, insn2, contents + 4); 2174 bfd_put_32 (output_bfd, insn3, contents + 8); 2175 bfd_put_32 (output_bfd, insn4, contents + 12); 2176 } 2177 2178 /* Finish up the dynamic sections. */ 2179 2180 static bfd_boolean 2181 or1k_elf_finish_dynamic_sections (bfd *output_bfd, 2182 struct bfd_link_info *info) 2183 { 2184 bfd *dynobj; 2185 asection *sdyn, *sgot; 2186 struct elf_or1k_link_hash_table *htab; 2187 2188 htab = or1k_elf_hash_table (info); 2189 if (htab == NULL) 2190 return FALSE; 2191 2192 dynobj = htab->root.dynobj; 2193 2194 sgot = htab->root.sgotplt; 2195 sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); 2196 2197 if (htab->root.dynamic_sections_created) 2198 { 2199 asection *splt; 2200 Elf32_External_Dyn *dyncon, *dynconend; 2201 2202 BFD_ASSERT (sgot != NULL && sdyn != NULL); 2203 2204 dyncon = (Elf32_External_Dyn *) sdyn->contents; 2205 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); 2206 2207 for (; dyncon < dynconend; dyncon++) 2208 { 2209 Elf_Internal_Dyn dyn; 2210 asection *s; 2211 2212 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 2213 2214 switch (dyn.d_tag) 2215 { 2216 default: 2217 continue; 2218 2219 case DT_PLTGOT: 2220 s = htab->root.sgotplt; 2221 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 2222 break; 2223 2224 case DT_JMPREL: 2225 s = htab->root.srelplt; 2226 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 2227 break; 2228 2229 case DT_PLTRELSZ: 2230 s = htab->root.srelplt; 2231 dyn.d_un.d_val = s->size; 2232 break; 2233 } 2234 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 2235 } 2236 2237 2238 /* Fill in the first entry in the procedure linkage table. */ 2239 splt = htab->root.splt; 2240 if (splt && splt->size > 0) 2241 { 2242 unsigned plt0, plt1, plt2; 2243 bfd_vma got_addr = sgot->output_section->vma + sgot->output_offset; 2244 2245 /* Note we force 16 byte alignment on the .got, so that 2246 the movhi/adrp can be shared between the two loads. */ 2247 2248 if (htab->saw_plta) 2249 { 2250 bfd_vma pc = splt->output_section->vma + splt->output_offset; 2251 unsigned pa = ((got_addr >> 13) - (pc >> 13)) & 0x1fffff; 2252 unsigned po = got_addr & 0x1fff; 2253 plt0 = OR1K_ADRP(12) | pa; 2254 plt1 = OR1K_LWZ(15,12) | (po + 8); 2255 plt2 = OR1K_LWZ(12,12) | (po + 4); 2256 } 2257 else if (bfd_link_pic (info)) 2258 { 2259 plt0 = OR1K_LWZ(15, 16) | 8; /* .got+8 */ 2260 plt1 = OR1K_LWZ(12, 16) | 4; /* .got+4 */ 2261 plt2 = OR1K_NOP; 2262 } 2263 else 2264 { 2265 unsigned ha = ((got_addr + 0x8000) >> 16) & 0xffff; 2266 unsigned lo = got_addr & 0xffff; 2267 plt0 = OR1K_MOVHI(12) | ha; 2268 plt1 = OR1K_LWZ(15,12) | (lo + 8); 2269 plt2 = OR1K_LWZ(12,12) | (lo + 4); 2270 } 2271 2272 or1k_write_plt_entry (output_bfd, splt->contents, 2273 plt0, plt1, plt2, OR1K_JR(15)); 2274 2275 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; 2276 } 2277 } 2278 2279 /* Set the first entry in the global offset table to the address of 2280 the dynamic section. */ 2281 if (sgot && sgot->size > 0) 2282 { 2283 if (sdyn == NULL) 2284 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); 2285 else 2286 bfd_put_32 (output_bfd, 2287 sdyn->output_section->vma + sdyn->output_offset, 2288 sgot->contents); 2289 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; 2290 } 2291 2292 if (htab->root.sgot && htab->root.sgot->size > 0) 2293 elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize = 4; 2294 2295 return TRUE; 2296 } 2297 2298 /* Finish up dynamic symbol handling. We set the contents of various 2299 dynamic sections here. */ 2300 2301 static bfd_boolean 2302 or1k_elf_finish_dynamic_symbol (bfd *output_bfd, 2303 struct bfd_link_info *info, 2304 struct elf_link_hash_entry *h, 2305 Elf_Internal_Sym *sym) 2306 { 2307 struct elf_or1k_link_hash_table *htab; 2308 bfd_byte *loc; 2309 2310 htab = or1k_elf_hash_table (info); 2311 if (htab == NULL) 2312 return FALSE; 2313 2314 if (h->plt.offset != (bfd_vma) -1) 2315 { 2316 unsigned int plt0, plt1, plt2; 2317 asection *splt; 2318 asection *sgot; 2319 asection *srela; 2320 bfd_vma plt_base_addr; 2321 bfd_vma plt_addr; 2322 bfd_vma plt_index; 2323 bfd_vma plt_reloc; 2324 bfd_vma got_base_addr; 2325 bfd_vma got_offset; 2326 bfd_vma got_addr; 2327 Elf_Internal_Rela rela; 2328 2329 /* This symbol has an entry in the procedure linkage table. Set 2330 it up. */ 2331 BFD_ASSERT (h->dynindx != -1); 2332 2333 splt = htab->root.splt; 2334 sgot = htab->root.sgotplt; 2335 srela = htab->root.srelplt; 2336 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); 2337 2338 plt_base_addr = splt->output_section->vma + splt->output_offset; 2339 got_base_addr = sgot->output_section->vma + sgot->output_offset; 2340 2341 /* Get the index in the procedure linkage table which 2342 corresponds to this symbol. This is the index of this symbol 2343 in all the symbols for which we are making plt entries. The 2344 first entry in the procedure linkage table is reserved. */ 2345 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; 2346 plt_addr = plt_base_addr + h->plt.offset; 2347 plt_reloc = plt_index * sizeof (Elf32_External_Rela); 2348 2349 /* Get the offset into the .got table of the entry that 2350 corresponds to this function. Each .got entry is 4 bytes. 2351 The first three are reserved. */ 2352 got_offset = (plt_index + 3) * 4; 2353 got_addr = got_base_addr + got_offset; 2354 2355 /* Fill in the entry in the procedure linkage table. */ 2356 if (htab->saw_plta) 2357 { 2358 unsigned pa = ((got_addr >> 13) - (plt_addr >> 13)) & 0x1fffff; 2359 unsigned po = (got_addr & 0x1fff); 2360 plt0 = OR1K_ADRP(12) | pa; 2361 plt1 = OR1K_LWZ(12,12) | po; 2362 plt2 = OR1K_ORI0(11) | plt_reloc; 2363 } 2364 else if (bfd_link_pic (info)) 2365 { 2366 plt0 = OR1K_LWZ(12,16) | got_offset; 2367 plt1 = OR1K_ORI0(11) | plt_reloc; 2368 plt2 = OR1K_NOP; 2369 } 2370 else 2371 { 2372 unsigned ha = ((got_addr + 0x8000) >> 16) & 0xffff; 2373 unsigned lo = got_addr & 0xffff; 2374 plt0 = OR1K_MOVHI(12) | ha; 2375 plt1 = OR1K_LWZ(12,12) | lo; 2376 plt2 = OR1K_ORI0(11) | plt_reloc; 2377 } 2378 2379 or1k_write_plt_entry (output_bfd, splt->contents + h->plt.offset, 2380 plt0, plt1, plt2, OR1K_JR(12)); 2381 2382 /* Fill in the entry in the global offset table. */ 2383 bfd_put_32 (output_bfd, plt_addr, sgot->contents + got_offset); 2384 2385 /* Fill in the entry in the .rela.plt section. */ 2386 rela.r_offset = got_addr; 2387 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_JMP_SLOT); 2388 rela.r_addend = 0; 2389 loc = srela->contents; 2390 loc += plt_index * sizeof (Elf32_External_Rela); 2391 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 2392 2393 if (!h->def_regular) 2394 { 2395 /* Mark the symbol as undefined, rather than as defined in 2396 the .plt section. Leave the value alone. */ 2397 sym->st_shndx = SHN_UNDEF; 2398 } 2399 } 2400 2401 if (h->got.offset != (bfd_vma) -1 2402 && (h->got.offset & 2) == 0) /* Homemade TLS check. */ 2403 { 2404 asection *sgot; 2405 asection *srela; 2406 Elf_Internal_Rela rela; 2407 2408 /* This symbol has an entry in the global offset table. Set it 2409 up. */ 2410 sgot = htab->root.sgot; 2411 srela = htab->root.srelgot; 2412 BFD_ASSERT (sgot != NULL && srela != NULL); 2413 2414 rela.r_offset = (sgot->output_section->vma 2415 + sgot->output_offset 2416 + (h->got.offset &~ 1)); 2417 2418 /* If this is a -Bsymbolic link, and the symbol is defined 2419 locally, we just want to emit a RELATIVE reloc. Likewise if 2420 the symbol was forced to be local because of a version file. 2421 The entry in the global offset table will already have been 2422 initialized in the relocate_section function. */ 2423 if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h)) 2424 { 2425 rela.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE); 2426 rela.r_addend = (h->root.u.def.value 2427 + h->root.u.def.section->output_section->vma 2428 + h->root.u.def.section->output_offset); 2429 } 2430 else 2431 { 2432 BFD_ASSERT ((h->got.offset & 1) == 0); 2433 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); 2434 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_GLOB_DAT); 2435 rela.r_addend = 0; 2436 } 2437 2438 loc = srela->contents; 2439 loc += srela->reloc_count * sizeof (Elf32_External_Rela); 2440 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 2441 ++srela->reloc_count; 2442 } 2443 2444 if (h->needs_copy) 2445 { 2446 asection *s; 2447 Elf_Internal_Rela rela; 2448 2449 /* This symbols needs a copy reloc. Set it up. */ 2450 BFD_ASSERT (h->dynindx != -1 2451 && (h->root.type == bfd_link_hash_defined 2452 || h->root.type == bfd_link_hash_defweak)); 2453 2454 rela.r_offset = (h->root.u.def.value 2455 + h->root.u.def.section->output_section->vma 2456 + h->root.u.def.section->output_offset); 2457 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_COPY); 2458 rela.r_addend = 0; 2459 if (h->root.u.def.section == htab->root.sdynrelro) 2460 s = htab->root.sreldynrelro; 2461 else 2462 s = htab->root.srelbss; 2463 loc = s->contents + s->reloc_count * sizeof (Elf32_External_Rela); 2464 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 2465 ++s->reloc_count; 2466 } 2467 2468 /* Mark some specially defined symbols as absolute. */ 2469 if (strcmp (h->root.root.string, "_DYNAMIC") == 0 2470 || h == htab->root.hgot) 2471 sym->st_shndx = SHN_ABS; 2472 2473 return TRUE; 2474 } 2475 2476 static enum elf_reloc_type_class 2477 or1k_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, 2478 const asection *rel_sec ATTRIBUTE_UNUSED, 2479 const Elf_Internal_Rela *rela) 2480 { 2481 switch ((int) ELF32_R_TYPE (rela->r_info)) 2482 { 2483 case R_OR1K_RELATIVE: return reloc_class_relative; 2484 case R_OR1K_JMP_SLOT: return reloc_class_plt; 2485 case R_OR1K_COPY: return reloc_class_copy; 2486 default: return reloc_class_normal; 2487 } 2488 } 2489 2490 /* Find dynamic relocs for H that apply to read-only sections. */ 2491 2492 static asection * 2493 readonly_dynrelocs (struct elf_link_hash_entry *h) 2494 { 2495 struct elf_dyn_relocs *p; 2496 struct elf_or1k_link_hash_entry *eh = (struct elf_or1k_link_hash_entry *) h; 2497 2498 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2499 { 2500 asection *s = p->sec->output_section; 2501 2502 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2503 return p->sec; 2504 } 2505 return NULL; 2506 } 2507 2508 /* Adjust a symbol defined by a dynamic object and referenced by a 2509 regular object. The current definition is in some section of the 2510 dynamic object, but we're not including those sections. We have to 2511 change the definition to something the rest of the link can 2512 understand. */ 2513 2514 static bfd_boolean 2515 or1k_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 2516 struct elf_link_hash_entry *h) 2517 { 2518 struct elf_or1k_link_hash_table *htab; 2519 bfd *dynobj; 2520 asection *s, *srel; 2521 2522 dynobj = elf_hash_table (info)->dynobj; 2523 2524 /* Make sure we know what is going on here. */ 2525 BFD_ASSERT (dynobj != NULL 2526 && (h->needs_plt 2527 || h->is_weakalias 2528 || (h->def_dynamic 2529 && h->ref_regular 2530 && !h->def_regular))); 2531 2532 /* If this is a function, put it in the procedure linkage table. We 2533 will fill in the contents of the procedure linkage table later, 2534 when we know the address of the .got section. */ 2535 if (h->type == STT_FUNC 2536 || h->needs_plt) 2537 { 2538 if (! bfd_link_pic (info) 2539 && !h->def_dynamic 2540 && !h->ref_dynamic 2541 && h->root.type != bfd_link_hash_undefweak 2542 && h->root.type != bfd_link_hash_undefined) 2543 { 2544 /* This case can occur if we saw a PLT reloc in an input 2545 file, but the symbol was never referred to by a dynamic 2546 object. In such a case, we don't actually need to build 2547 a procedure linkage table, and we can just do a PCREL 2548 reloc instead. */ 2549 h->plt.offset = (bfd_vma) -1; 2550 h->needs_plt = 0; 2551 } 2552 2553 return TRUE; 2554 } 2555 else 2556 h->plt.offset = (bfd_vma) -1; 2557 2558 /* If this is a weak symbol, and there is a real definition, the 2559 processor independent code will have arranged for us to see the 2560 real definition first, and we can just use the same value. */ 2561 if (h->is_weakalias) 2562 { 2563 struct elf_link_hash_entry *def = weakdef (h); 2564 BFD_ASSERT (def->root.type == bfd_link_hash_defined); 2565 h->root.u.def.section = def->root.u.def.section; 2566 h->root.u.def.value = def->root.u.def.value; 2567 return TRUE; 2568 } 2569 2570 /* This is a reference to a symbol defined by a dynamic object which 2571 is not a function. */ 2572 2573 /* If we are creating a shared library, we must presume that the 2574 only references to the symbol are via the global offset table. 2575 For such cases we need not do anything here; the relocations will 2576 be handled correctly by relocate_section. */ 2577 if (bfd_link_pic (info)) 2578 return TRUE; 2579 2580 /* If there are no references to this symbol that do not use the 2581 GOT, we don't need to generate a copy reloc. */ 2582 if (!h->non_got_ref) 2583 return TRUE; 2584 2585 /* If -z nocopyreloc was given, we won't generate them either. */ 2586 if (info->nocopyreloc) 2587 { 2588 h->non_got_ref = 0; 2589 return TRUE; 2590 } 2591 2592 /* If we don't find any dynamic relocs in read-only sections, then 2593 we'll be keeping the dynamic relocs and avoiding the copy reloc. */ 2594 if (!readonly_dynrelocs (h)) 2595 { 2596 h->non_got_ref = 0; 2597 return TRUE; 2598 } 2599 2600 /* We must allocate the symbol in our .dynbss section, which will 2601 become part of the .bss section of the executable. There will be 2602 an entry for this symbol in the .dynsym section. The dynamic 2603 object will contain position independent code, so all references 2604 from the dynamic object to this symbol will go through the global 2605 offset table. The dynamic linker will use the .dynsym entry to 2606 determine the address it must put in the global offset table, so 2607 both the dynamic object and the regular object will refer to the 2608 same memory location for the variable. */ 2609 2610 htab = or1k_elf_hash_table (info); 2611 if (htab == NULL) 2612 return FALSE; 2613 2614 /* We must generate a R_OR1K_COPY reloc to tell the dynamic linker 2615 to copy the initial value out of the dynamic object and into the 2616 runtime process image. We need to remember the offset into the 2617 .rela.bss section we are going to use. */ 2618 if ((h->root.u.def.section->flags & SEC_READONLY) != 0) 2619 { 2620 s = htab->root.sdynrelro; 2621 srel = htab->root.sreldynrelro; 2622 } 2623 else 2624 { 2625 s = htab->root.sdynbss; 2626 srel = htab->root.srelbss; 2627 } 2628 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) 2629 { 2630 srel->size += sizeof (Elf32_External_Rela); 2631 h->needs_copy = 1; 2632 } 2633 2634 return _bfd_elf_adjust_dynamic_copy (info, h, s); 2635 } 2636 2637 /* Allocate space in .plt, .got and associated reloc sections for 2638 dynamic relocs. */ 2639 2640 static bfd_boolean 2641 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) 2642 { 2643 struct bfd_link_info *info; 2644 struct elf_or1k_link_hash_table *htab; 2645 struct elf_or1k_link_hash_entry *eh; 2646 struct elf_dyn_relocs *p; 2647 2648 if (h->root.type == bfd_link_hash_indirect) 2649 return TRUE; 2650 2651 info = (struct bfd_link_info *) inf; 2652 htab = or1k_elf_hash_table (info); 2653 if (htab == NULL) 2654 return FALSE; 2655 2656 eh = (struct elf_or1k_link_hash_entry *) h; 2657 2658 if (htab->root.dynamic_sections_created 2659 && h->plt.refcount > 0) 2660 { 2661 /* Make sure this symbol is output as a dynamic symbol. 2662 Undefined weak syms won't yet be marked as dynamic. */ 2663 if (h->dynindx == -1 2664 && !h->forced_local) 2665 { 2666 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2667 return FALSE; 2668 } 2669 2670 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) 2671 { 2672 asection *s = htab->root.splt; 2673 2674 /* If this is the first .plt entry, make room for the special 2675 first entry. */ 2676 if (s->size == 0) 2677 s->size = PLT_ENTRY_SIZE; 2678 2679 h->plt.offset = s->size; 2680 2681 /* If this symbol is not defined in a regular file, and we are 2682 not generating a shared library, then set the symbol to this 2683 location in the .plt. This is required to make function 2684 pointers compare as equal between the normal executable and 2685 the shared library. */ 2686 if (! bfd_link_pic (info) 2687 && !h->def_regular) 2688 { 2689 h->root.u.def.section = s; 2690 h->root.u.def.value = h->plt.offset; 2691 } 2692 2693 /* Make room for this entry. */ 2694 s->size += PLT_ENTRY_SIZE; 2695 2696 /* We also need to make an entry in the .got.plt section, which 2697 will be placed in the .got section by the linker script. */ 2698 htab->root.sgotplt->size += 4; 2699 2700 /* We also need to make an entry in the .rel.plt section. */ 2701 htab->root.srelplt->size += sizeof (Elf32_External_Rela); 2702 } 2703 else 2704 { 2705 h->plt.offset = (bfd_vma) -1; 2706 h->needs_plt = 0; 2707 } 2708 } 2709 else 2710 { 2711 h->plt.offset = (bfd_vma) -1; 2712 h->needs_plt = 0; 2713 } 2714 2715 if (h->got.refcount > 0) 2716 { 2717 asection *s; 2718 bfd_boolean dyn; 2719 unsigned char tls_type; 2720 2721 /* Make sure this symbol is output as a dynamic symbol. 2722 Undefined weak syms won't yet be marked as dynamic. */ 2723 if (h->dynindx == -1 2724 && !h->forced_local) 2725 { 2726 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2727 return FALSE; 2728 } 2729 2730 s = htab->root.sgot; 2731 2732 h->got.offset = s->size; 2733 2734 tls_type = ((struct elf_or1k_link_hash_entry *) h)->tls_type; 2735 2736 /* TLS GD requires two GOT and two relocs. */ 2737 if (tls_type == TLS_GD) 2738 s->size += 8; 2739 else 2740 s->size += 4; 2741 dyn = htab->root.dynamic_sections_created; 2742 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)) 2743 { 2744 if (tls_type == TLS_GD) 2745 htab->root.srelgot->size += 2 * sizeof (Elf32_External_Rela); 2746 else 2747 htab->root.srelgot->size += sizeof (Elf32_External_Rela); 2748 } 2749 } 2750 else 2751 h->got.offset = (bfd_vma) -1; 2752 2753 if (eh->dyn_relocs == NULL) 2754 return TRUE; 2755 2756 /* In the shared -Bsymbolic case, discard space allocated for 2757 dynamic pc-relative relocs against symbols which turn out to be 2758 defined in regular objects. For the normal shared case, discard 2759 space for pc-relative relocs that have become local due to symbol 2760 visibility changes. */ 2761 2762 if (bfd_link_pic (info)) 2763 { 2764 if (SYMBOL_CALLS_LOCAL (info, h)) 2765 { 2766 struct elf_dyn_relocs **pp; 2767 2768 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) 2769 { 2770 p->count -= p->pc_count; 2771 p->pc_count = 0; 2772 if (p->count == 0) 2773 *pp = p->next; 2774 else 2775 pp = &p->next; 2776 } 2777 } 2778 2779 /* Also discard relocs on undefined weak syms with non-default 2780 visibility. */ 2781 if (eh->dyn_relocs != NULL 2782 && h->root.type == bfd_link_hash_undefweak) 2783 { 2784 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) 2785 eh->dyn_relocs = NULL; 2786 2787 /* Make sure undefined weak symbols are output as a dynamic 2788 symbol in PIEs. */ 2789 else if (h->dynindx == -1 2790 && !h->forced_local) 2791 { 2792 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2793 return FALSE; 2794 } 2795 } 2796 } 2797 else 2798 { 2799 /* For the non-shared case, discard space for relocs against 2800 symbols which turn out to need copy relocs or are not 2801 dynamic. */ 2802 2803 if (!h->non_got_ref 2804 && ((h->def_dynamic 2805 && !h->def_regular) 2806 || (htab->root.dynamic_sections_created 2807 && (h->root.type == bfd_link_hash_undefweak 2808 || h->root.type == bfd_link_hash_undefined)))) 2809 { 2810 /* Make sure this symbol is output as a dynamic symbol. 2811 Undefined weak syms won't yet be marked as dynamic. */ 2812 if (h->dynindx == -1 2813 && !h->forced_local) 2814 { 2815 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2816 return FALSE; 2817 } 2818 2819 /* If that succeeded, we know we'll be keeping all the 2820 relocs. */ 2821 if (h->dynindx != -1) 2822 goto keep; 2823 } 2824 2825 eh->dyn_relocs = NULL; 2826 2827 keep: ; 2828 } 2829 2830 /* Finally, allocate space. */ 2831 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2832 { 2833 asection *sreloc = elf_section_data (p->sec)->sreloc; 2834 sreloc->size += p->count * sizeof (Elf32_External_Rela); 2835 } 2836 2837 return TRUE; 2838 } 2839 2840 /* Set DF_TEXTREL if we find any dynamic relocs that apply to 2841 read-only sections. */ 2842 2843 static bfd_boolean 2844 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) 2845 { 2846 asection *sec; 2847 2848 if (h->root.type == bfd_link_hash_indirect) 2849 return TRUE; 2850 2851 sec = readonly_dynrelocs (h); 2852 if (sec != NULL) 2853 { 2854 struct bfd_link_info *info = (struct bfd_link_info *) info_p; 2855 2856 info->flags |= DF_TEXTREL; 2857 info->callbacks->minfo 2858 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), 2859 sec->owner, h->root.root.string, sec); 2860 2861 /* Not an error, just cut short the traversal. */ 2862 return FALSE; 2863 } 2864 return TRUE; 2865 } 2866 2867 /* Set the sizes of the dynamic sections. */ 2868 2869 static bfd_boolean 2870 or1k_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 2871 struct bfd_link_info *info) 2872 { 2873 struct elf_or1k_link_hash_table *htab; 2874 bfd *dynobj; 2875 asection *s; 2876 bfd_boolean relocs; 2877 bfd *ibfd; 2878 2879 htab = or1k_elf_hash_table (info); 2880 if (htab == NULL) 2881 return FALSE; 2882 2883 dynobj = htab->root.dynobj; 2884 BFD_ASSERT (dynobj != NULL); 2885 2886 if (htab->root.dynamic_sections_created) 2887 { 2888 /* Set the contents of the .interp section to the interpreter. */ 2889 if (bfd_link_executable (info) && !info->nointerp) 2890 { 2891 s = bfd_get_section_by_name (dynobj, ".interp"); 2892 BFD_ASSERT (s != NULL); 2893 s->size = sizeof ELF_DYNAMIC_INTERPRETER; 2894 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; 2895 } 2896 } 2897 2898 /* Set up .got offsets for local syms, and space for local dynamic 2899 relocs. */ 2900 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) 2901 { 2902 bfd_signed_vma *local_got; 2903 bfd_signed_vma *end_local_got; 2904 bfd_size_type locsymcount; 2905 Elf_Internal_Shdr *symtab_hdr; 2906 unsigned char *local_tls_type; 2907 asection *srel; 2908 2909 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) 2910 continue; 2911 2912 for (s = ibfd->sections; s != NULL; s = s->next) 2913 { 2914 struct elf_dyn_relocs *p; 2915 2916 for (p = ((struct elf_dyn_relocs *) 2917 elf_section_data (s)->local_dynrel); 2918 p != NULL; 2919 p = p->next) 2920 { 2921 if (! bfd_is_abs_section (p->sec) 2922 && bfd_is_abs_section (p->sec->output_section)) 2923 { 2924 /* Input section has been discarded, either because 2925 it is a copy of a linkonce section or due to 2926 linker script /DISCARD/, so we'll be discarding 2927 the relocs too. */ 2928 } 2929 else if (p->count != 0) 2930 { 2931 srel = elf_section_data (p->sec)->sreloc; 2932 srel->size += p->count * sizeof (Elf32_External_Rela); 2933 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 2934 info->flags |= DF_TEXTREL; 2935 } 2936 } 2937 } 2938 2939 local_got = elf_local_got_refcounts (ibfd); 2940 if (!local_got) 2941 continue; 2942 2943 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; 2944 locsymcount = symtab_hdr->sh_info; 2945 end_local_got = local_got + locsymcount; 2946 s = htab->root.sgot; 2947 srel = htab->root.srelgot; 2948 local_tls_type = (unsigned char *) elf_or1k_local_tls_type (ibfd); 2949 for (; local_got < end_local_got; ++local_got) 2950 { 2951 if (*local_got > 0) 2952 { 2953 *local_got = s->size; 2954 2955 /* TLS GD requires two GOT and two relocs. */ 2956 if (local_tls_type != NULL && *local_tls_type == TLS_GD) 2957 s->size += 8; 2958 else 2959 s->size += 4; 2960 if (bfd_link_pic (info)) 2961 { 2962 if (local_tls_type != NULL && *local_tls_type == TLS_GD) 2963 srel->size += 2 * sizeof (Elf32_External_Rela); 2964 else 2965 srel->size += sizeof (Elf32_External_Rela); 2966 } 2967 } 2968 else 2969 2970 *local_got = (bfd_vma) -1; 2971 2972 if (local_tls_type) 2973 ++local_tls_type; 2974 } 2975 } 2976 2977 /* Allocate global sym .plt and .got entries, and space for global 2978 sym dynamic relocs. */ 2979 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); 2980 2981 /* We now have determined the sizes of the various dynamic sections. 2982 Allocate memory for them. */ 2983 relocs = FALSE; 2984 for (s = dynobj->sections; s != NULL; s = s->next) 2985 { 2986 if ((s->flags & SEC_LINKER_CREATED) == 0) 2987 continue; 2988 2989 if (s == htab->root.splt 2990 || s == htab->root.sgot 2991 || s == htab->root.sgotplt 2992 || s == htab->root.sdynbss 2993 || s == htab->root.sdynrelro) 2994 { 2995 /* Strip this section if we don't need it; see the 2996 comment below. */ 2997 } 2998 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) 2999 { 3000 if (s->size != 0 && s != htab->root.srelplt) 3001 relocs = TRUE; 3002 3003 /* We use the reloc_count field as a counter if we need 3004 to copy relocs into the output file. */ 3005 s->reloc_count = 0; 3006 } 3007 else 3008 /* It's not one of our sections, so don't allocate space. */ 3009 continue; 3010 3011 if (s->size == 0) 3012 { 3013 /* If we don't need this section, strip it from the 3014 output file. This is mostly to handle .rela.bss and 3015 .rela.plt. We must create both sections in 3016 create_dynamic_sections, because they must be created 3017 before the linker maps input sections to output 3018 sections. The linker does that before 3019 adjust_dynamic_symbol is called, and it is that 3020 function which decides whether anything needs to go 3021 into these sections. */ 3022 s->flags |= SEC_EXCLUDE; 3023 continue; 3024 } 3025 3026 if ((s->flags & SEC_HAS_CONTENTS) == 0) 3027 continue; 3028 3029 /* Allocate memory for the section contents. We use bfd_zalloc 3030 here in case unused entries are not reclaimed before the 3031 section's contents are written out. This should not happen, 3032 but this way if it does, we get a R_OR1K_NONE reloc instead 3033 of garbage. */ 3034 s->contents = bfd_zalloc (dynobj, s->size); 3035 3036 if (s->contents == NULL) 3037 return FALSE; 3038 } 3039 3040 if (htab->root.dynamic_sections_created) 3041 { 3042 /* Add some entries to the .dynamic section. We fill in the 3043 values later, in or1k_elf_finish_dynamic_sections, but we 3044 must add the entries now so that we get the correct size for 3045 the .dynamic section. The DT_DEBUG entry is filled in by the 3046 dynamic linker and used by the debugger. */ 3047 #define add_dynamic_entry(TAG, VAL) \ 3048 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 3049 3050 if (bfd_link_executable (info)) 3051 { 3052 if (! add_dynamic_entry (DT_DEBUG, 0)) 3053 return FALSE; 3054 } 3055 3056 if (htab->root.splt->size != 0) 3057 { 3058 if (! add_dynamic_entry (DT_PLTGOT, 0) 3059 || ! add_dynamic_entry (DT_PLTRELSZ, 0) 3060 || ! add_dynamic_entry (DT_PLTREL, DT_RELA) 3061 || ! add_dynamic_entry (DT_JMPREL, 0)) 3062 return FALSE; 3063 } 3064 3065 if (relocs) 3066 { 3067 if (! add_dynamic_entry (DT_RELA, 0) 3068 || ! add_dynamic_entry (DT_RELASZ, 0) 3069 || ! add_dynamic_entry (DT_RELAENT, 3070 sizeof (Elf32_External_Rela))) 3071 return FALSE; 3072 3073 /* If any dynamic relocs apply to a read-only section, 3074 then we need a DT_TEXTREL entry. */ 3075 if ((info->flags & DF_TEXTREL) == 0) 3076 elf_link_hash_traverse (&htab->root, maybe_set_textrel, info); 3077 3078 if ((info->flags & DF_TEXTREL) != 0) 3079 { 3080 if (! add_dynamic_entry (DT_TEXTREL, 0)) 3081 return FALSE; 3082 } 3083 } 3084 } 3085 3086 #undef add_dynamic_entry 3087 return TRUE; 3088 } 3089 3090 /* Copy the extra info we tack onto an elf_link_hash_entry. */ 3091 3092 static void 3093 or1k_elf_copy_indirect_symbol (struct bfd_link_info *info, 3094 struct elf_link_hash_entry *dir, 3095 struct elf_link_hash_entry *ind) 3096 { 3097 struct elf_or1k_link_hash_entry * edir; 3098 struct elf_or1k_link_hash_entry * eind; 3099 3100 edir = (struct elf_or1k_link_hash_entry *) dir; 3101 eind = (struct elf_or1k_link_hash_entry *) ind; 3102 3103 if (eind->dyn_relocs != NULL) 3104 { 3105 if (edir->dyn_relocs != NULL) 3106 { 3107 struct elf_dyn_relocs **pp; 3108 struct elf_dyn_relocs *p; 3109 3110 /* Add reloc counts against the indirect sym to the direct sym 3111 list. Merge any entries against the same section. */ 3112 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) 3113 { 3114 struct elf_dyn_relocs *q; 3115 3116 for (q = edir->dyn_relocs; q != NULL; q = q->next) 3117 if (q->sec == p->sec) 3118 { 3119 q->pc_count += p->pc_count; 3120 q->count += p->count; 3121 *pp = p->next; 3122 break; 3123 } 3124 if (q == NULL) 3125 pp = &p->next; 3126 } 3127 *pp = edir->dyn_relocs; 3128 } 3129 3130 edir->dyn_relocs = eind->dyn_relocs; 3131 eind->dyn_relocs = NULL; 3132 } 3133 3134 if (ind->root.type == bfd_link_hash_indirect) 3135 { 3136 if (dir->got.refcount <= 0) 3137 { 3138 edir->tls_type = eind->tls_type; 3139 eind->tls_type = TLS_UNKNOWN; 3140 } 3141 } 3142 3143 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 3144 } 3145 3146 /* Set the right machine number. */ 3147 3148 static bfd_boolean 3149 or1k_elf_object_p (bfd *abfd) 3150 { 3151 unsigned long mach = bfd_mach_or1k; 3152 3153 if (elf_elfheader (abfd)->e_flags & EF_OR1K_NODELAY) 3154 mach = bfd_mach_or1knd; 3155 3156 return bfd_default_set_arch_mach (abfd, bfd_arch_or1k, mach); 3157 } 3158 3159 /* Store the machine number in the flags field. */ 3160 3161 static void 3162 or1k_elf_final_write_processing (bfd *abfd, 3163 bfd_boolean linker ATTRIBUTE_UNUSED) 3164 { 3165 switch (bfd_get_mach (abfd)) 3166 { 3167 default: 3168 case bfd_mach_or1k: 3169 break; 3170 case bfd_mach_or1knd: 3171 elf_elfheader (abfd)->e_flags |= EF_OR1K_NODELAY; 3172 break; 3173 } 3174 } 3175 3176 static bfd_boolean 3177 or1k_elf_set_private_flags (bfd *abfd, flagword flags) 3178 { 3179 BFD_ASSERT (!elf_flags_init (abfd) 3180 || elf_elfheader (abfd)->e_flags == flags); 3181 3182 elf_elfheader (abfd)->e_flags = flags; 3183 elf_flags_init (abfd) = TRUE; 3184 return TRUE; 3185 } 3186 3187 /* Make sure all input files are consistent with respect to 3188 EF_OR1K_NODELAY flag setting. */ 3189 3190 static bfd_boolean 3191 elf32_or1k_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) 3192 { 3193 bfd *obfd = info->output_bfd; 3194 flagword out_flags; 3195 flagword in_flags; 3196 3197 in_flags = elf_elfheader (ibfd)->e_flags; 3198 out_flags = elf_elfheader (obfd)->e_flags; 3199 3200 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour 3201 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 3202 return TRUE; 3203 3204 if (!elf_flags_init (obfd)) 3205 { 3206 elf_flags_init (obfd) = TRUE; 3207 elf_elfheader (obfd)->e_flags = in_flags; 3208 3209 return TRUE; 3210 } 3211 3212 if (in_flags == out_flags) 3213 return TRUE; 3214 3215 if ((in_flags & EF_OR1K_NODELAY) != (out_flags & EF_OR1K_NODELAY)) 3216 { 3217 _bfd_error_handler 3218 (_("%pB: %s flag mismatch with previous modules"), 3219 ibfd, "EF_OR1K_NODELAY"); 3220 3221 bfd_set_error (bfd_error_bad_value); 3222 return FALSE; 3223 } 3224 3225 return TRUE; 3226 3227 } 3228 3229 /* Implement elf_backend_grok_prstatus: 3230 Support for core dump NOTE sections. */ 3231 static bfd_boolean 3232 or1k_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 3233 { 3234 int offset; 3235 size_t size; 3236 3237 switch (note->descsz) 3238 { 3239 default: 3240 return FALSE; 3241 3242 case 212: /* Linux/OpenRISC */ 3243 /* pr_cursig */ 3244 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); 3245 3246 /* pr_pid */ 3247 elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24); 3248 3249 /* pr_reg */ 3250 offset = 72; 3251 size = 132; 3252 3253 break; 3254 } 3255 3256 /* Make a ".reg/999" section. */ 3257 return _bfd_elfcore_make_pseudosection (abfd, ".reg", 3258 size, note->descpos + offset); 3259 } 3260 3261 /* Implement elf_backend_grok_psinfo. */ 3262 static bfd_boolean 3263 or1k_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 3264 { 3265 switch (note->descsz) 3266 { 3267 default: 3268 return FALSE; 3269 3270 case 128: /* Linux/OpenRISC elf_prpsinfo */ 3271 elf_tdata (abfd)->core->program 3272 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); 3273 elf_tdata (abfd)->core->command 3274 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); 3275 } 3276 3277 return TRUE; 3278 } 3279 3280 3281 #define ELF_ARCH bfd_arch_or1k 3282 #define ELF_MACHINE_CODE EM_OR1K 3283 #define ELF_TARGET_ID OR1K_ELF_DATA 3284 #define ELF_MAXPAGESIZE 0x2000 3285 3286 #define TARGET_BIG_SYM or1k_elf32_vec 3287 #define TARGET_BIG_NAME "elf32-or1k" 3288 3289 #define elf_info_to_howto_rel NULL 3290 #define elf_info_to_howto or1k_info_to_howto_rela 3291 #define elf_backend_relocate_section or1k_elf_relocate_section 3292 #define elf_backend_gc_mark_hook or1k_elf_gc_mark_hook 3293 #define elf_backend_check_relocs or1k_elf_check_relocs 3294 #define elf_backend_reloc_type_class or1k_elf_reloc_type_class 3295 #define elf_backend_can_gc_sections 1 3296 #define elf_backend_rela_normal 1 3297 3298 #define bfd_elf32_mkobject elf_or1k_mkobject 3299 3300 #define bfd_elf32_bfd_merge_private_bfd_data elf32_or1k_merge_private_bfd_data 3301 #define bfd_elf32_bfd_set_private_flags or1k_elf_set_private_flags 3302 #define bfd_elf32_bfd_reloc_type_lookup or1k_reloc_type_lookup 3303 #define bfd_elf32_bfd_reloc_name_lookup or1k_reloc_name_lookup 3304 3305 #define elf_backend_object_p or1k_elf_object_p 3306 #define elf_backend_final_write_processing or1k_elf_final_write_processing 3307 #define elf_backend_can_refcount 1 3308 3309 #define elf_backend_plt_readonly 1 3310 #define elf_backend_want_got_plt 1 3311 #define elf_backend_want_plt_sym 0 3312 #define elf_backend_got_header_size 12 3313 #define elf_backend_dtrel_excludes_plt 1 3314 #define elf_backend_want_dynrelro 1 3315 3316 #define bfd_elf32_bfd_link_hash_table_create or1k_elf_link_hash_table_create 3317 #define elf_backend_copy_indirect_symbol or1k_elf_copy_indirect_symbol 3318 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections 3319 #define elf_backend_finish_dynamic_sections or1k_elf_finish_dynamic_sections 3320 #define elf_backend_size_dynamic_sections or1k_elf_size_dynamic_sections 3321 #define elf_backend_adjust_dynamic_symbol or1k_elf_adjust_dynamic_symbol 3322 #define elf_backend_finish_dynamic_symbol or1k_elf_finish_dynamic_symbol 3323 3324 #define elf_backend_grok_prstatus or1k_grok_prstatus 3325 #define elf_backend_grok_psinfo or1k_grok_psinfo 3326 3327 #include "elf32-target.h" 3328
Indexes created Tue Apr 14 00:22:26 UTC 2026