1/* TILEPro-specific support for 32-bit ELF. 2 Copyright (C) 2011-2022 Free Software Foundation, Inc. 3 4 This file is part of BFD, the Binary File Descriptor library. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 19 MA 02110-1301, USA. */ 20 21#include "sysdep.h" 22#include "bfd.h" 23#include "libbfd.h" 24#include "elf-bfd.h" 25#include "elf/tilepro.h" 26#include "opcode/tilepro.h" 27#include "libiberty.h" 28#include "elf32-tilepro.h" 29 30#define TILEPRO_BYTES_PER_WORD 4 31 32static reloc_howto_type tilepro_elf_howto_table [] = 33{ 34 /* This reloc does nothing. */ 35 HOWTO (R_TILEPRO_NONE, /* type */ 36 0, /* rightshift */ 37 0, /* size */ 38 0, /* bitsize */ 39 false, /* pc_relative */ 40 0, /* bitpos */ 41 complain_overflow_dont, /* complain_on_overflow */ 42 bfd_elf_generic_reloc, /* special_function */ 43 "R_TILEPRO_NONE", /* name */ 44 false, /* partial_inplace */ 45 0, /* src_mask */ 46 0, /* dst_mask */ 47 false), /* pcrel_offset */ 48 49 /* A 32 bit absolute relocation. */ 50 HOWTO (R_TILEPRO_32, /* type */ 51 0, /* rightshift */ 52 4, /* size */ 53 32, /* bitsize */ 54 false, /* pc_relative */ 55 0, /* bitpos */ 56 complain_overflow_dont, /* complain_on_overflow */ 57 bfd_elf_generic_reloc, /* special_function */ 58 "R_TILEPRO_32", /* name */ 59 false, /* partial_inplace */ 60 0, /* src_mask */ 61 0xffffffff, /* dst_mask */ 62 false), /* pcrel_offset */ 63 64 /* A 16 bit absolute relocation. */ 65 HOWTO (R_TILEPRO_16, /* type */ 66 0, /* rightshift */ 67 2, /* size */ 68 16, /* bitsize */ 69 false, /* pc_relative */ 70 0, /* bitpos */ 71 complain_overflow_bitfield, /* complain_on_overflow */ 72 bfd_elf_generic_reloc, /* special_function */ 73 "R_TILEPRO_16", /* name */ 74 false, /* partial_inplace */ 75 0, /* src_mask */ 76 0xffff, /* dst_mask */ 77 false), /* pcrel_offset */ 78 79 /* An 8 bit absolute relocation. */ 80 HOWTO (R_TILEPRO_8, /* type */ 81 0, /* rightshift */ 82 1, /* size */ 83 8, /* bitsize */ 84 false, /* pc_relative */ 85 0, /* bitpos */ 86 complain_overflow_unsigned, /* complain_on_overflow */ 87 bfd_elf_generic_reloc, /* special_function */ 88 "R_TILEPRO_8", /* name */ 89 false, /* partial_inplace */ 90 0, /* src_mask */ 91 0xff, /* dst_mask */ 92 false), /* pcrel_offset */ 93 94 /* A 32 bit pc-relative relocation. */ 95 HOWTO (R_TILEPRO_32_PCREL,/* type */ 96 0, /* rightshift */ 97 4, /* size */ 98 32, /* bitsize */ 99 true, /* pc_relative */ 100 0, /* bitpos */ 101 complain_overflow_dont, /* complain_on_overflow */ 102 bfd_elf_generic_reloc, /* special_function */ 103 "R_TILEPRO_32_PCREL", /* name */ 104 false, /* partial_inplace */ 105 0, /* src_mask */ 106 0xffffffff, /* dst_mask */ 107 true), /* pcrel_offset */ 108 109 /* A 16 bit pc-relative relocation. */ 110 HOWTO (R_TILEPRO_16_PCREL,/* type */ 111 0, /* rightshift */ 112 2, /* size */ 113 16, /* bitsize */ 114 true, /* pc_relative */ 115 0, /* bitpos */ 116 complain_overflow_signed, /* complain_on_overflow */ 117 bfd_elf_generic_reloc, /* special_function */ 118 "R_TILEPRO_16_PCREL", /* name */ 119 false, /* partial_inplace */ 120 0, /* src_mask */ 121 0xffff, /* dst_mask */ 122 true), /* pcrel_offset */ 123 124 /* An 8 bit pc-relative relocation. */ 125 HOWTO (R_TILEPRO_8_PCREL, /* type */ 126 0, /* rightshift */ 127 1, /* size */ 128 8, /* bitsize */ 129 true, /* pc_relative */ 130 0, /* bitpos */ 131 complain_overflow_signed, /* complain_on_overflow */ 132 bfd_elf_generic_reloc, /* special_function */ 133 "R_TILEPRO_8_PCREL",/* name */ 134 false, /* partial_inplace */ 135 0, /* src_mask */ 136 0xff, /* dst_mask */ 137 true), /* pcrel_offset */ 138 139 /* A 16 bit relocation without overflow. */ 140 HOWTO (R_TILEPRO_LO16, /* type */ 141 0, /* rightshift */ 142 2, /* size */ 143 16, /* bitsize */ 144 false, /* pc_relative */ 145 0, /* bitpos */ 146 complain_overflow_dont,/* complain_on_overflow */ 147 bfd_elf_generic_reloc, /* special_function */ 148 "R_TILEPRO_LO16", /* name */ 149 false, /* partial_inplace */ 150 0, /* src_mask */ 151 0xffff, /* dst_mask */ 152 false), /* pcrel_offset */ 153 154 /* The high order 16 bits of an address. */ 155 HOWTO (R_TILEPRO_HI16, /* type */ 156 16, /* rightshift */ 157 2, /* size */ 158 16, /* bitsize */ 159 false, /* pc_relative */ 160 0, /* bitpos */ 161 complain_overflow_dont, /* complain_on_overflow */ 162 bfd_elf_generic_reloc, /* special_function */ 163 "R_TILEPRO_HI16", /* name */ 164 false, /* partial_inplace */ 165 0, /* src_mask */ 166 0xffff, /* dst_mask */ 167 false), /* pcrel_offset */ 168 169 /* The high order 16 bits of an address, plus 1 if the contents of 170 the low 16 bits, treated as a signed number, is negative. */ 171 HOWTO (R_TILEPRO_HA16, /* type */ 172 16, /* rightshift */ 173 2, /* size */ 174 16, /* bitsize */ 175 false, /* pc_relative */ 176 0, /* bitpos */ 177 complain_overflow_dont, /* complain_on_overflow */ 178 bfd_elf_generic_reloc, /* special_function */ 179 "R_TILEPRO_HA16", /* name */ 180 false, /* partial_inplace */ 181 0, /* src_mask */ 182 0xffff, /* dst_mask */ 183 false), /* pcrel_offset */ 184 185 HOWTO (R_TILEPRO_COPY, /* type */ 186 0, /* rightshift */ 187 0, /* size */ 188 0, /* bitsize */ 189 false, /* pc_relative */ 190 0, /* bitpos */ 191 complain_overflow_dont, /* complain_on_overflow */ 192 bfd_elf_generic_reloc, /* special_function */ 193 "R_TILEPRO_COPY", /* name */ 194 false, /* partial_inplace */ 195 0, /* src_mask */ 196 0, /* dst_mask */ 197 true), /* pcrel_offset */ 198 199 HOWTO (R_TILEPRO_GLOB_DAT, /* type */ 200 0, /* rightshift */ 201 0, /* size */ 202 0, /* bitsize */ 203 false, /* pc_relative */ 204 0, /* bitpos */ 205 complain_overflow_dont, /* complain_on_overflow */ 206 bfd_elf_generic_reloc, /* special_function */ 207 "R_TILEPRO_GLOB_DAT", /* name */ 208 false, /* partial_inplace */ 209 0, /* src_mask */ 210 0, /* dst_mask */ 211 true), /* pcrel_offset */ 212 213 HOWTO (R_TILEPRO_JMP_SLOT, /* type */ 214 0, /* rightshift */ 215 0, /* size */ 216 0, /* bitsize */ 217 false, /* pc_relative */ 218 0, /* bitpos */ 219 complain_overflow_dont, /* complain_on_overflow */ 220 bfd_elf_generic_reloc, /* special_function */ 221 "R_TILEPRO_JMP_SLOT", /* name */ 222 false, /* partial_inplace */ 223 0, /* src_mask */ 224 0, /* dst_mask */ 225 true), /* pcrel_offset */ 226 227 HOWTO (R_TILEPRO_RELATIVE, /* type */ 228 0, /* rightshift */ 229 0, /* size */ 230 0, /* bitsize */ 231 false, /* pc_relative */ 232 0, /* bitpos */ 233 complain_overflow_dont, /* complain_on_overflow */ 234 bfd_elf_generic_reloc, /* special_function */ 235 "R_TILEPRO_RELATIVE", /* name */ 236 false, /* partial_inplace */ 237 0, /* src_mask */ 238 0, /* dst_mask */ 239 true), /* pcrel_offset */ 240 241 HOWTO (R_TILEPRO_BROFF_X1, /* type */ 242 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ 243 4, /* size */ 244 17, /* bitsize */ 245 true, /* pc_relative */ 246 0, /* bitpos */ 247 complain_overflow_signed, /* complain_on_overflow */ 248 bfd_elf_generic_reloc, /* special_function */ 249 "R_TILEPRO_BROFF_X1", /* name */ 250 false, /* partial_inplace */ 251 0, /* src_mask */ 252 -1, /* dst_mask */ 253 true), /* pcrel_offset */ 254 255 HOWTO (R_TILEPRO_JOFFLONG_X1, /* type */ 256 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ 257 4, /* size */ 258 29, /* bitsize */ 259 true, /* pc_relative */ 260 0, /* bitpos */ 261 complain_overflow_signed,/* complain_on_overflow */ 262 bfd_elf_generic_reloc, /* special_function */ 263 "R_TILEPRO_JOFFLONG_X1", /* name */ 264 false, /* partial_inplace */ 265 0, /* src_mask */ 266 -1, /* dst_mask */ 267 true), /* pcrel_offset */ 268 269 HOWTO (R_TILEPRO_JOFFLONG_X1_PLT, /* type */ 270 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ 271 4, /* size */ 272 29, /* bitsize */ 273 true, /* pc_relative */ 274 0, /* bitpos */ 275 complain_overflow_signed,/* complain_on_overflow */ 276 bfd_elf_generic_reloc, /* special_function */ 277 "R_TILEPRO_JOFFLONG_X1_PLT", /* name */ 278 false, /* partial_inplace */ 279 0, /* src_mask */ 280 -1, /* dst_mask */ 281 true), /* pcrel_offset */ 282 283#define TILEPRO_IMM_HOWTO(name, size, bitsize) \ 284 HOWTO (name, 0, size, bitsize, false, 0, \ 285 complain_overflow_signed, bfd_elf_generic_reloc, \ 286 #name, false, 0, -1, false) 287 288#define TILEPRO_UIMM_HOWTO(name, size, bitsize) \ 289 HOWTO (name, 0, size, bitsize, false, 0, \ 290 complain_overflow_unsigned, bfd_elf_generic_reloc, \ 291 #name, false, 0, -1, false) 292 293 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X0, 1, 8), 294 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y0, 1, 8), 295 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X1, 1, 8), 296 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y1, 1, 8), 297 TILEPRO_UIMM_HOWTO(R_TILEPRO_MT_IMM15_X1, 2, 15), 298 TILEPRO_UIMM_HOWTO(R_TILEPRO_MF_IMM15_X1, 2, 15), 299 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X0, 2, 16), 300 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X1, 2, 16), 301 302#define TILEPRO_IMM16_HOWTO(name, rshift) \ 303 HOWTO (name, rshift, 2, 16, false, 0, \ 304 complain_overflow_dont, bfd_elf_generic_reloc, \ 305 #name, false, 0, 0xffff, false) 306 307 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_LO, 0), 308 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_LO, 0), 309 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_HI, 16), 310 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_HI, 16), 311 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_HA, 16), 312 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_HA, 16), 313 314 /* PC-relative offsets. */ 315 316 HOWTO (R_TILEPRO_IMM16_X0_PCREL, /* type */ 317 0, /* rightshift */ 318 2, /* size */ 319 16, /* bitsize */ 320 true, /* pc_relative */ 321 0, /* bitpos */ 322 complain_overflow_signed, /* complain_on_overflow */ 323 bfd_elf_generic_reloc, /* special_function */ 324 "R_TILEPRO_IMM16_X0_PCREL",/* name */ 325 false, /* partial_inplace */ 326 0, /* src_mask */ 327 -1, /* dst_mask */ 328 true), /* pcrel_offset */ 329 330 HOWTO (R_TILEPRO_IMM16_X1_PCREL, /* type */ 331 0, /* rightshift */ 332 2, /* size */ 333 16, /* bitsize */ 334 true, /* pc_relative */ 335 0, /* bitpos */ 336 complain_overflow_signed, /* complain_on_overflow */ 337 bfd_elf_generic_reloc, /* special_function */ 338 "R_TILEPRO_IMM16_X1_PCREL",/* name */ 339 false, /* partial_inplace */ 340 0, /* src_mask */ 341 -1, /* dst_mask */ 342 true), /* pcrel_offset */ 343 344#define TILEPRO_IMM16_HOWTO_PCREL(name, rshift) \ 345 HOWTO (name, rshift, 2, 16, true, 0, \ 346 complain_overflow_dont, bfd_elf_generic_reloc, \ 347 #name, false, 0, 0xffff, true) 348 349 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X0_LO_PCREL, 0), 350 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X1_LO_PCREL, 0), 351 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X0_HI_PCREL, 16), 352 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X1_HI_PCREL, 16), 353 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X0_HA_PCREL, 16), 354 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X1_HA_PCREL, 16), 355 356 /* Byte offset into GOT for a particular symbol. */ 357 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X0_GOT, 2, 16), 358 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X1_GOT, 2, 16), 359 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_GOT_LO, 0), 360 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_GOT_LO, 0), 361 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_GOT_HI, 16), 362 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_GOT_HI, 16), 363 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_GOT_HA, 16), 364 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_GOT_HA, 16), 365 366 TILEPRO_UIMM_HOWTO(R_TILEPRO_MMSTART_X0, 1, 5), 367 TILEPRO_UIMM_HOWTO(R_TILEPRO_MMEND_X0, 1, 5), 368 TILEPRO_UIMM_HOWTO(R_TILEPRO_MMSTART_X1, 1, 5), 369 TILEPRO_UIMM_HOWTO(R_TILEPRO_MMEND_X1, 1, 5), 370 371 TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_X0, 1, 5), 372 TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_X1, 1, 5), 373 TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_Y0, 1, 5), 374 TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_Y1, 1, 5), 375 376 TILEPRO_IMM_HOWTO(R_TILEPRO_DEST_IMM8_X1, 1, 8), 377 378 /* These relocs are currently not defined. */ 379 EMPTY_HOWTO (56), 380 EMPTY_HOWTO (57), 381 EMPTY_HOWTO (58), 382 EMPTY_HOWTO (59), 383 384 HOWTO (R_TILEPRO_TLS_GD_CALL, /* type */ 385 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ 386 4, /* size */ 387 29, /* bitsize */ 388 true, /* pc_relative */ 389 0, /* bitpos */ 390 complain_overflow_signed,/* complain_on_overflow */ 391 bfd_elf_generic_reloc, /* special_function */ 392 "R_TILEPRO_TLS_GD_CALL", /* name */ 393 false, /* partial_inplace */ 394 0, /* src_mask */ 395 -1, /* dst_mask */ 396 true), /* pcrel_offset */ 397 398 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X0_TLS_GD_ADD, 1, 8), 399 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X1_TLS_GD_ADD, 1, 8), 400 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y0_TLS_GD_ADD, 1, 8), 401 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y1_TLS_GD_ADD, 1, 8), 402 TILEPRO_IMM_HOWTO(R_TILEPRO_TLS_IE_LOAD, 1, 8), 403 404 /* Offsets into the GOT of TLS Descriptors. */ 405 406 HOWTO (R_TILEPRO_IMM16_X0_TLS_GD,/* type */ 407 0, /* rightshift */ 408 2, /* size */ 409 16, /* bitsize */ 410 false, /* pc_relative */ 411 0, /* bitpos */ 412 complain_overflow_signed, /* complain_on_overflow */ 413 bfd_elf_generic_reloc, /* special_function */ 414 "R_TILEPRO_IMM16_X0_TLS_GD",/* name */ 415 false, /* partial_inplace */ 416 0, /* src_mask */ 417 0xffff, /* dst_mask */ 418 false), /* pcrel_offset */ 419 420 HOWTO (R_TILEPRO_IMM16_X1_TLS_GD,/* type */ 421 0, /* rightshift */ 422 2, /* size */ 423 16, /* bitsize */ 424 false, /* pc_relative */ 425 0, /* bitpos */ 426 complain_overflow_signed, /* complain_on_overflow */ 427 bfd_elf_generic_reloc, /* special_function */ 428 "R_TILEPRO_IMM16_X1_TLS_GD",/* name */ 429 false, /* partial_inplace */ 430 0, /* src_mask */ 431 0xffff, /* dst_mask */ 432 false), /* pcrel_offset */ 433 434 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_GD_LO, 0), 435 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_GD_LO, 0), 436 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_GD_HI, 16), 437 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_GD_HI, 16), 438 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_GD_HA, 16), 439 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_GD_HA, 16), 440 441 /* Offsets into the GOT of TLS Descriptors. */ 442 443 HOWTO (R_TILEPRO_IMM16_X0_TLS_IE,/* type */ 444 0, /* rightshift */ 445 2, /* size */ 446 16, /* bitsize */ 447 false, /* pc_relative */ 448 0, /* bitpos */ 449 complain_overflow_signed, /* complain_on_overflow */ 450 bfd_elf_generic_reloc, /* special_function */ 451 "R_TILEPRO_IMM16_X0_TLS_IE",/* name */ 452 false, /* partial_inplace */ 453 0, /* src_mask */ 454 -1, /* dst_mask */ 455 true), /* pcrel_offset */ 456 457 HOWTO (R_TILEPRO_IMM16_X1_TLS_IE,/* type */ 458 0, /* rightshift */ 459 2, /* size */ 460 16, /* bitsize */ 461 false, /* pc_relative */ 462 0, /* bitpos */ 463 complain_overflow_signed, /* complain_on_overflow */ 464 bfd_elf_generic_reloc, /* special_function */ 465 "R_TILEPRO_IMM16_X1_TLS_IE",/* name */ 466 false, /* partial_inplace */ 467 0, /* src_mask */ 468 -1, /* dst_mask */ 469 true), /* pcrel_offset */ 470 471 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_IE_LO, 0), 472 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_IE_LO, 0), 473 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_IE_HI, 16), 474 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_IE_HI, 16), 475 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_IE_HA, 16), 476 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_IE_HA, 16), 477 478 /* These are common with the Solaris TLS implementation. */ 479 HOWTO(R_TILEPRO_TLS_DTPMOD32, 0, 0, 0, false, 0, complain_overflow_dont, 480 bfd_elf_generic_reloc, "R_TILEPRO_TLS_DTPMOD32", 481 false, 0, 0, true), 482 HOWTO(R_TILEPRO_TLS_DTPOFF32, 0, 4, 32, false, 0, complain_overflow_bitfield, 483 bfd_elf_generic_reloc, "R_TILEPRO_TLS_DTPOFF32", 484 false, 0, 0xFFFFFFFF, true), 485 HOWTO(R_TILEPRO_TLS_TPOFF32, 0, 0, 0, false, 0, complain_overflow_dont, 486 bfd_elf_generic_reloc, "R_TILEPRO_TLS_TPOFF32", 487 false, 0, 0, true), 488 489 HOWTO (R_TILEPRO_IMM16_X0_TLS_LE,/* type */ 490 0, /* rightshift */ 491 2, /* size */ 492 16, /* bitsize */ 493 false, /* pc_relative */ 494 0, /* bitpos */ 495 complain_overflow_signed, /* complain_on_overflow */ 496 bfd_elf_generic_reloc, /* special_function */ 497 "R_TILEPRO_IMM16_X0_TLS_LE",/* name */ 498 false, /* partial_inplace */ 499 0, /* src_mask */ 500 -1, /* dst_mask */ 501 true), /* pcrel_offset */ 502 503 HOWTO (R_TILEPRO_IMM16_X1_TLS_LE,/* type */ 504 0, /* rightshift */ 505 2, /* size */ 506 16, /* bitsize */ 507 false, /* pc_relative */ 508 0, /* bitpos */ 509 complain_overflow_signed, /* complain_on_overflow */ 510 bfd_elf_generic_reloc, /* special_function */ 511 "R_TILEPRO_IMM16_X1_TLS_LE",/* name */ 512 false, /* partial_inplace */ 513 0, /* src_mask */ 514 -1, /* dst_mask */ 515 true), /* pcrel_offset */ 516 517 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_LE_LO, 0), 518 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_LE_LO, 0), 519 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_LE_HI, 16), 520 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_LE_HI, 16), 521 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_LE_HA, 16), 522 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_LE_HA, 16), 523}; 524 525static reloc_howto_type tilepro_elf_howto_table2 [] = 526{ 527 /* GNU extension to record C++ vtable hierarchy */ 528 HOWTO (R_TILEPRO_GNU_VTINHERIT, /* type */ 529 0, /* rightshift */ 530 4, /* size */ 531 0, /* bitsize */ 532 false, /* pc_relative */ 533 0, /* bitpos */ 534 complain_overflow_dont, /* complain_on_overflow */ 535 NULL, /* special_function */ 536 "R_TILEPRO_GNU_VTINHERIT", /* name */ 537 false, /* partial_inplace */ 538 0, /* src_mask */ 539 0, /* dst_mask */ 540 false), /* pcrel_offset */ 541 542 /* GNU extension to record C++ vtable member usage */ 543 HOWTO (R_TILEPRO_GNU_VTENTRY, /* type */ 544 0, /* rightshift */ 545 4, /* size */ 546 0, /* bitsize */ 547 false, /* pc_relative */ 548 0, /* bitpos */ 549 complain_overflow_dont, /* complain_on_overflow */ 550 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 551 "R_TILEPRO_GNU_VTENTRY", /* name */ 552 false, /* partial_inplace */ 553 0, /* src_mask */ 554 0, /* dst_mask */ 555 false), /* pcrel_offset */ 556 557}; 558 559/* Map BFD reloc types to TILEPRO ELF reloc types. */ 560 561typedef struct tilepro_reloc_map 562{ 563 bfd_reloc_code_real_type bfd_reloc_val; 564 unsigned int tilepro_reloc_val; 565 reloc_howto_type * table; 566} reloc_map; 567 568static const reloc_map tilepro_reloc_map [] = 569{ 570#define TH_REMAP(bfd, tilepro) \ 571 { bfd, tilepro, tilepro_elf_howto_table }, 572 573 /* Standard relocations. */ 574 TH_REMAP (BFD_RELOC_NONE, R_TILEPRO_NONE) 575 TH_REMAP (BFD_RELOC_32, R_TILEPRO_32) 576 TH_REMAP (BFD_RELOC_16, R_TILEPRO_16) 577 TH_REMAP (BFD_RELOC_8, R_TILEPRO_8) 578 TH_REMAP (BFD_RELOC_32_PCREL, R_TILEPRO_32_PCREL) 579 TH_REMAP (BFD_RELOC_16_PCREL, R_TILEPRO_16_PCREL) 580 TH_REMAP (BFD_RELOC_8_PCREL, R_TILEPRO_8_PCREL) 581 TH_REMAP (BFD_RELOC_LO16, R_TILEPRO_LO16) 582 TH_REMAP (BFD_RELOC_HI16, R_TILEPRO_HI16) 583 TH_REMAP (BFD_RELOC_HI16_S, R_TILEPRO_HA16) 584 585 /* Custom relocations. */ 586 TH_REMAP (BFD_RELOC_TILEPRO_COPY, R_TILEPRO_COPY) 587 TH_REMAP (BFD_RELOC_TILEPRO_GLOB_DAT, R_TILEPRO_GLOB_DAT) 588 TH_REMAP (BFD_RELOC_TILEPRO_JMP_SLOT, R_TILEPRO_JMP_SLOT) 589 TH_REMAP (BFD_RELOC_TILEPRO_RELATIVE, R_TILEPRO_RELATIVE) 590 TH_REMAP (BFD_RELOC_TILEPRO_BROFF_X1, R_TILEPRO_BROFF_X1) 591 TH_REMAP (BFD_RELOC_TILEPRO_JOFFLONG_X1, R_TILEPRO_JOFFLONG_X1) 592 TH_REMAP (BFD_RELOC_TILEPRO_JOFFLONG_X1_PLT, R_TILEPRO_JOFFLONG_X1_PLT) 593 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X0, R_TILEPRO_IMM8_X0) 594 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y0, R_TILEPRO_IMM8_Y0) 595 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X1, R_TILEPRO_IMM8_X1) 596 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y1, R_TILEPRO_IMM8_Y1) 597 TH_REMAP (BFD_RELOC_TILEPRO_DEST_IMM8_X1, R_TILEPRO_DEST_IMM8_X1) 598 TH_REMAP (BFD_RELOC_TILEPRO_MT_IMM15_X1, R_TILEPRO_MT_IMM15_X1) 599 TH_REMAP (BFD_RELOC_TILEPRO_MF_IMM15_X1, R_TILEPRO_MF_IMM15_X1) 600 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0, R_TILEPRO_IMM16_X0) 601 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1, R_TILEPRO_IMM16_X1) 602 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_LO, R_TILEPRO_IMM16_X0_LO) 603 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_LO, R_TILEPRO_IMM16_X1_LO) 604 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HI, R_TILEPRO_IMM16_X0_HI) 605 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HI, R_TILEPRO_IMM16_X1_HI) 606 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HA, R_TILEPRO_IMM16_X0_HA) 607 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HA, R_TILEPRO_IMM16_X1_HA) 608 609 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_PCREL, R_TILEPRO_IMM16_X0_PCREL) 610 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_PCREL, R_TILEPRO_IMM16_X1_PCREL) 611 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_LO_PCREL, R_TILEPRO_IMM16_X0_LO_PCREL) 612 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_LO_PCREL, R_TILEPRO_IMM16_X1_LO_PCREL) 613 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HI_PCREL, R_TILEPRO_IMM16_X0_HI_PCREL) 614 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HI_PCREL, R_TILEPRO_IMM16_X1_HI_PCREL) 615 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HA_PCREL, R_TILEPRO_IMM16_X0_HA_PCREL) 616 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HA_PCREL, R_TILEPRO_IMM16_X1_HA_PCREL) 617 618 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT, R_TILEPRO_IMM16_X0_GOT) 619 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT, R_TILEPRO_IMM16_X1_GOT) 620 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_LO, R_TILEPRO_IMM16_X0_GOT_LO) 621 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_LO, R_TILEPRO_IMM16_X1_GOT_LO) 622 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_HI, R_TILEPRO_IMM16_X0_GOT_HI) 623 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_HI, R_TILEPRO_IMM16_X1_GOT_HI) 624 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_HA, R_TILEPRO_IMM16_X0_GOT_HA) 625 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_HA, R_TILEPRO_IMM16_X1_GOT_HA) 626 627 TH_REMAP (BFD_RELOC_TILEPRO_MMSTART_X0, R_TILEPRO_MMSTART_X0) 628 TH_REMAP (BFD_RELOC_TILEPRO_MMEND_X0, R_TILEPRO_MMEND_X0) 629 TH_REMAP (BFD_RELOC_TILEPRO_MMSTART_X1, R_TILEPRO_MMSTART_X1) 630 TH_REMAP (BFD_RELOC_TILEPRO_MMEND_X1, R_TILEPRO_MMEND_X1) 631 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_X0, R_TILEPRO_SHAMT_X0) 632 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_X1, R_TILEPRO_SHAMT_X1) 633 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_Y0, R_TILEPRO_SHAMT_Y0) 634 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_Y1, R_TILEPRO_SHAMT_Y1) 635 636 TH_REMAP (BFD_RELOC_TILEPRO_TLS_GD_CALL, R_TILEPRO_TLS_GD_CALL) 637 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X0_TLS_GD_ADD, R_TILEPRO_IMM8_X0_TLS_GD_ADD) 638 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X1_TLS_GD_ADD, R_TILEPRO_IMM8_X1_TLS_GD_ADD) 639 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y0_TLS_GD_ADD, R_TILEPRO_IMM8_Y0_TLS_GD_ADD) 640 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y1_TLS_GD_ADD, R_TILEPRO_IMM8_Y1_TLS_GD_ADD) 641 TH_REMAP (BFD_RELOC_TILEPRO_TLS_IE_LOAD, R_TILEPRO_TLS_IE_LOAD) 642 643 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD, R_TILEPRO_IMM16_X0_TLS_GD) 644 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD, R_TILEPRO_IMM16_X1_TLS_GD) 645 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_LO, R_TILEPRO_IMM16_X0_TLS_GD_LO) 646 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_LO, R_TILEPRO_IMM16_X1_TLS_GD_LO) 647 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_HI, R_TILEPRO_IMM16_X0_TLS_GD_HI) 648 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_HI, R_TILEPRO_IMM16_X1_TLS_GD_HI) 649 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_HA, R_TILEPRO_IMM16_X0_TLS_GD_HA) 650 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_HA, R_TILEPRO_IMM16_X1_TLS_GD_HA) 651 652 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE, R_TILEPRO_IMM16_X0_TLS_IE) 653 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE, R_TILEPRO_IMM16_X1_TLS_IE) 654 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_LO, R_TILEPRO_IMM16_X0_TLS_IE_LO) 655 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_LO, R_TILEPRO_IMM16_X1_TLS_IE_LO) 656 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_HI, R_TILEPRO_IMM16_X0_TLS_IE_HI) 657 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_HI, R_TILEPRO_IMM16_X1_TLS_IE_HI) 658 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_HA, R_TILEPRO_IMM16_X0_TLS_IE_HA) 659 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_HA, R_TILEPRO_IMM16_X1_TLS_IE_HA) 660 661 TH_REMAP (BFD_RELOC_TILEPRO_TLS_DTPMOD32, R_TILEPRO_TLS_DTPMOD32) 662 TH_REMAP (BFD_RELOC_TILEPRO_TLS_DTPOFF32, R_TILEPRO_TLS_DTPOFF32) 663 TH_REMAP (BFD_RELOC_TILEPRO_TLS_TPOFF32, R_TILEPRO_TLS_TPOFF32) 664 665 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE, R_TILEPRO_IMM16_X0_TLS_LE) 666 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE, R_TILEPRO_IMM16_X1_TLS_LE) 667 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_LO, R_TILEPRO_IMM16_X0_TLS_LE_LO) 668 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_LO, R_TILEPRO_IMM16_X1_TLS_LE_LO) 669 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HI, R_TILEPRO_IMM16_X0_TLS_LE_HI) 670 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HI, R_TILEPRO_IMM16_X1_TLS_LE_HI) 671 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HA, R_TILEPRO_IMM16_X0_TLS_LE_HA) 672 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HA, R_TILEPRO_IMM16_X1_TLS_LE_HA) 673 674#undef TH_REMAP 675 676 { BFD_RELOC_VTABLE_INHERIT, R_TILEPRO_GNU_VTINHERIT, tilepro_elf_howto_table2 }, 677 { BFD_RELOC_VTABLE_ENTRY, R_TILEPRO_GNU_VTENTRY, tilepro_elf_howto_table2 }, 678}; 679 680 681 682/* TILEPRO ELF linker hash entry. */ 683 684struct tilepro_elf_link_hash_entry 685{ 686 struct elf_link_hash_entry elf; 687 688#define GOT_UNKNOWN 0 689#define GOT_NORMAL 1 690#define GOT_TLS_GD 2 691#define GOT_TLS_IE 4 692 unsigned char tls_type; 693}; 694 695#define tilepro_elf_hash_entry(ent) \ 696 ((struct tilepro_elf_link_hash_entry *)(ent)) 697 698struct _bfd_tilepro_elf_obj_tdata 699{ 700 struct elf_obj_tdata root; 701 702 /* tls_type for each local got entry. */ 703 char *local_got_tls_type; 704}; 705 706#define _bfd_tilepro_elf_tdata(abfd) \ 707 ((struct _bfd_tilepro_elf_obj_tdata *) (abfd)->tdata.any) 708 709#define _bfd_tilepro_elf_local_got_tls_type(abfd) \ 710 (_bfd_tilepro_elf_tdata (abfd)->local_got_tls_type) 711 712#define is_tilepro_elf(bfd) \ 713 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ 714 && elf_tdata (bfd) != NULL \ 715 && elf_object_id (bfd) == TILEPRO_ELF_DATA) 716 717/* Allocate TILEPro ELF private object data. */ 718 719static bool 720tilepro_elf_mkobject (bfd *abfd) 721{ 722 return bfd_elf_allocate_object (abfd, 723 sizeof (struct _bfd_tilepro_elf_obj_tdata), 724 TILEPRO_ELF_DATA); 725} 726 727#include "elf/common.h" 728#include "elf/internal.h" 729 730/* Get the Tilepro ELF linker hash table from a link_info structure. */ 731#define tilepro_elf_hash_table(p) \ 732 ((is_elf_hash_table ((p)->hash) \ 733 && elf_hash_table_id (elf_hash_table (p)) == TILEPRO_ELF_DATA) \ 734 ? (struct elf_link_hash_table *) (p)->hash : NULL) 735 736static reloc_howto_type * 737tilepro_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, 738 bfd_reloc_code_real_type code) 739{ 740 unsigned int i; 741 742 for (i = ARRAY_SIZE (tilepro_reloc_map); i--;) 743 { 744 const reloc_map * entry; 745 746 entry = tilepro_reloc_map + i; 747 748 if (entry->bfd_reloc_val == code) 749 return entry->table + (entry->tilepro_reloc_val 750 - entry->table[0].type); 751 } 752 753 return NULL; 754} 755 756static reloc_howto_type * 757tilepro_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 758 const char *r_name) 759{ 760 unsigned int i; 761 762 for (i = 0; 763 i < (sizeof (tilepro_elf_howto_table) 764 / sizeof (tilepro_elf_howto_table[0])); 765 i++) 766 if (tilepro_elf_howto_table[i].name != NULL 767 && strcasecmp (tilepro_elf_howto_table[i].name, r_name) == 0) 768 return &tilepro_elf_howto_table[i]; 769 770 return NULL; 771} 772 773/* Set the howto pointer for an TILEPro ELF reloc. */ 774 775static bool 776tilepro_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED, 777 arelent * cache_ptr, 778 Elf_Internal_Rela * dst) 779{ 780 unsigned int r_type = ELF32_R_TYPE (dst->r_info); 781 782 if (r_type <= (unsigned int) R_TILEPRO_IMM16_X1_TLS_LE_HA) 783 cache_ptr->howto = &tilepro_elf_howto_table [r_type]; 784 else if (r_type - R_TILEPRO_GNU_VTINHERIT 785 <= ((unsigned int) R_TILEPRO_GNU_VTENTRY 786 - (unsigned int) R_TILEPRO_GNU_VTINHERIT)) 787 cache_ptr->howto 788 = &tilepro_elf_howto_table2 [r_type - R_TILEPRO_GNU_VTINHERIT]; 789 else 790 { 791 /* xgettext:c-format */ 792 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), 793 abfd, r_type); 794 bfd_set_error (bfd_error_bad_value); 795 return false; 796 } 797 return true; 798} 799 800typedef tilepro_bundle_bits (*tilepro_create_func)(int); 801 802static const tilepro_create_func reloc_to_create_func[] = 803{ 804 /* The first fourteen relocation types don't correspond to operands */ 805 NULL, 806 NULL, 807 NULL, 808 NULL, 809 NULL, 810 NULL, 811 NULL, 812 NULL, 813 NULL, 814 NULL, 815 NULL, 816 NULL, 817 NULL, 818 NULL, 819 820 /* The remaining relocations are used for immediate operands */ 821 create_BrOff_X1, 822 create_JOffLong_X1, 823 create_JOffLong_X1, 824 create_Imm8_X0, 825 create_Imm8_Y0, 826 create_Imm8_X1, 827 create_Imm8_Y1, 828 create_MT_Imm15_X1, 829 create_MF_Imm15_X1, 830 create_Imm16_X0, 831 create_Imm16_X1, 832 create_Imm16_X0, 833 create_Imm16_X1, 834 create_Imm16_X0, 835 create_Imm16_X1, 836 create_Imm16_X0, 837 create_Imm16_X1, 838 create_Imm16_X0, 839 create_Imm16_X1, 840 create_Imm16_X0, 841 create_Imm16_X1, 842 create_Imm16_X0, 843 create_Imm16_X1, 844 create_Imm16_X0, 845 create_Imm16_X1, 846 create_Imm16_X0, 847 create_Imm16_X1, 848 create_Imm16_X0, 849 create_Imm16_X1, 850 create_Imm16_X0, 851 create_Imm16_X1, 852 create_Imm16_X0, 853 create_Imm16_X1, 854 create_MMStart_X0, 855 create_MMEnd_X0, 856 create_MMStart_X1, 857 create_MMEnd_X1, 858 create_ShAmt_X0, 859 create_ShAmt_X1, 860 create_ShAmt_Y0, 861 create_ShAmt_Y1, 862 863 create_Dest_Imm8_X1, 864 NULL, 865 NULL, 866 NULL, 867 NULL, 868 NULL, 869 NULL, 870 NULL, 871 NULL, 872 NULL, 873 NULL, 874 875 create_Imm16_X0, 876 create_Imm16_X1, 877 create_Imm16_X0, 878 create_Imm16_X1, 879 create_Imm16_X0, 880 create_Imm16_X1, 881 create_Imm16_X0, 882 create_Imm16_X1, 883 create_Imm16_X0, 884 create_Imm16_X1, 885 create_Imm16_X0, 886 create_Imm16_X1, 887 create_Imm16_X0, 888 create_Imm16_X1, 889 create_Imm16_X0, 890 create_Imm16_X1, 891 892 NULL, 893 NULL, 894 NULL, 895 896 create_Imm16_X0, 897 create_Imm16_X1, 898 create_Imm16_X0, 899 create_Imm16_X1, 900 create_Imm16_X0, 901 create_Imm16_X1, 902 create_Imm16_X0, 903 create_Imm16_X1, 904}; 905 906#define NELEMS(a) ((int) (sizeof (a) / sizeof ((a)[0]))) 907 908/* Support for core dump NOTE sections. */ 909 910static bool 911tilepro_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 912{ 913 int offset; 914 size_t size; 915 916 if (note->descsz != TILEPRO_PRSTATUS_SIZEOF) 917 return false; 918 919 /* pr_cursig */ 920 elf_tdata (abfd)->core->signal = 921 bfd_get_16 (abfd, note->descdata + TILEPRO_PRSTATUS_OFFSET_PR_CURSIG); 922 923 /* pr_pid */ 924 elf_tdata (abfd)->core->pid = 925 bfd_get_32 (abfd, note->descdata + TILEPRO_PRSTATUS_OFFSET_PR_PID); 926 927 /* pr_reg */ 928 offset = TILEPRO_PRSTATUS_OFFSET_PR_REG; 929 size = TILEPRO_GREGSET_T_SIZE; 930 931 /* Make a ".reg/999" section. */ 932 return _bfd_elfcore_make_pseudosection (abfd, ".reg", 933 size, note->descpos + offset); 934} 935 936static bool 937tilepro_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 938{ 939 if (note->descsz != TILEPRO_PRPSINFO_SIZEOF) 940 return false; 941 942 elf_tdata (abfd)->core->program 943 = _bfd_elfcore_strndup (abfd, 944 note->descdata + TILEPRO_PRPSINFO_OFFSET_PR_FNAME, 945 16); 946 elf_tdata (abfd)->core->command 947 = _bfd_elfcore_strndup (abfd, 948 note->descdata + TILEPRO_PRPSINFO_OFFSET_PR_PSARGS, 949 ELF_PR_PSARGS_SIZE); 950 951 952 /* Note that for some reason, a spurious space is tacked 953 onto the end of the args in some (at least one anyway) 954 implementations, so strip it off if it exists. */ 955 { 956 char *command = elf_tdata (abfd)->core->command; 957 int n = strlen (command); 958 959 if (0 < n && command[n - 1] == ' ') 960 command[n - 1] = '\0'; 961 } 962 963 return true; 964} 965 966 967static void 968tilepro_elf_append_rela_32 (bfd *abfd, asection *s, Elf_Internal_Rela *rel) 969{ 970 Elf32_External_Rela *loc32; 971 972 loc32 = (Elf32_External_Rela *) s->contents; 973 loc32 += s->reloc_count++; 974 bfd_elf32_swap_reloca_out (abfd, rel, (bfd_byte *) loc32); 975} 976 977/* PLT/GOT stuff */ 978 979/* The procedure linkage table starts with the following header: 980 981 { 982 rli r29, r29, 16 983 lwadd r28, r27, 4 984 } 985 lw r27, r27 986 { 987 info 10 ## SP not offset, return PC in LR 988 jr r27 989 } 990 991 Subsequent entries are the following, jumping to the header at the end: 992 993 lnk r28 9941: 995 { 996 auli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET> 997 auli r27, r28, <_GLOBAL_OFFSET_TABLE_ - 1b> 998 } 999 { 1000 addli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET> 1001 addli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b> 1002 } 1003 { 1004 auli r29, zero, MY_PLT_INDEX 1005 lw r28, r28 1006 } 1007 { 1008 info 10 ## SP not offset, return PC in LR 1009 jr r28 1010 } 1011 1012 We initially store MY_PLT_INDEX in the high bits so that we can use the all 1013 16 bits as an unsigned offset; if we use the low bits we would get an 1014 unwanted sign extension. The PLT header then rotates the index to get the 1015 right value, before calling the resolution routine. This computation can 1016 fit in unused bundle slots so it's free. 1017 1018 This code sequence lets the code at at the start of the PLT determine 1019 which PLT entry was executed by examining 'r29'. 1020 1021 Note that MY_PLT_INDEX skips over the header entries, so the first 1022 actual jump table entry has index zero. 1023*/ 1024 1025#define PLT_HEADER_SIZE_IN_BUNDLES 3 1026#define PLT_ENTRY_SIZE_IN_BUNDLES 5 1027 1028#define PLT_HEADER_SIZE \ 1029 (PLT_HEADER_SIZE_IN_BUNDLES * TILEPRO_BUNDLE_SIZE_IN_BYTES) 1030#define PLT_ENTRY_SIZE \ 1031 (PLT_ENTRY_SIZE_IN_BUNDLES * TILEPRO_BUNDLE_SIZE_IN_BYTES) 1032 1033/* The size in bytes of an entry in the global offset table. */ 1034 1035#define GOT_ENTRY_SIZE TILEPRO_BYTES_PER_WORD 1036 1037#define GOTPLT_HEADER_SIZE (2 * GOT_ENTRY_SIZE) 1038 1039 1040static const bfd_byte 1041tilepro_plt0_entry[PLT_HEADER_SIZE] = 1042{ 1043 0x5d, 0x07, 0x03, 0x70, 1044 0x6e, 0x23, 0xd0, 0x30, /* { rli r29, r29, 16 ; lwadd r28, r27, 4 } */ 1045 0x00, 0x50, 0xba, 0x6d, 1046 0x00, 0x08, 0x6d, 0xdc, /* { lw r27, r27 } */ 1047 0xff, 0xaf, 0x10, 0x50, 1048 0x60, 0x03, 0x18, 0x08, /* { info 10 ; jr r27 } */ 1049}; 1050 1051static const bfd_byte 1052tilepro_short_plt_entry[PLT_ENTRY_SIZE] = 1053{ 1054 0x00, 0x50, 0x16, 0x70, 1055 0x0e, 0x00, 0x1a, 0x08, /* { lnk r28 } */ 1056 0x1c, 0x07, 0x00, 0xa0, 1057 0x8d, 0x03, 0x00, 0x18, /* { addli r28, r28, 0 ; addli r27, r28, 0 } */ 1058 0xdd, 0x0f, 0x00, 0x30, 1059 0x8e, 0x73, 0x0b, 0x40, /* { auli r29, zero, 0 ; lw r28, r28 } */ 1060 0xff, 0xaf, 0x10, 0x50, 1061 0x80, 0x03, 0x18, 0x08, /* { info 10 ; jr r28 } */ 1062 0x00, 0x00, 0x00, 0x00, 1063 0x00, 0x00, 0x00, 0x00, 1064}; 1065 1066static const bfd_byte 1067tilepro_long_plt_entry[PLT_ENTRY_SIZE] = 1068{ 1069 0x00, 0x50, 0x16, 0x70, 1070 0x0e, 0x00, 0x1a, 0x08, /* { lnk r28 } */ 1071 0x1c, 0x07, 0x00, 0xb0, 1072 0x8d, 0x03, 0x00, 0x20, /* { auli r28, r28, 0 ; auli r27, r28, 0 } */ 1073 0x1c, 0x07, 0x00, 0xa0, 1074 0x6d, 0x03, 0x00, 0x18, /* { addli r28, r28, 0 ; addli r27, r27, 0 } */ 1075 0xdd, 0x0f, 0x00, 0x30, 1076 0x8e, 0x73, 0x0b, 0x40, /* { auli r29, zero, 0 ; lw r28, r28 } */ 1077 0xff, 0xaf, 0x10, 0x50, 1078 0x80, 0x03, 0x18, 0x08, /* { info 10 ; jr r28 } */ 1079}; 1080 1081static bfd_vma 1082tilepro_ha16(bfd_vma vma) 1083{ 1084 return ((vma >> 16) + ((vma >> 15) & 1)) & 0xffff; 1085} 1086 1087static int 1088tilepro_plt_entry_build (asection *splt, asection *sgotplt, bfd_vma offset, 1089 bfd_vma *r_offset) 1090{ 1091 int plt_index = (offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE; 1092 int got_offset = plt_index * GOT_ENTRY_SIZE + GOTPLT_HEADER_SIZE; 1093 tilepro_bundle_bits *pc; 1094 1095 /* Compute the distance from the got entry to the lnk. */ 1096 bfd_signed_vma dist_got_entry = sgotplt->output_section->vma 1097 + sgotplt->output_offset 1098 + got_offset 1099 - splt->output_section->vma 1100 - splt->output_offset 1101 - offset 1102 - TILEPRO_BUNDLE_SIZE_IN_BYTES; 1103 1104 /* Compute the distance to GOTPLT[0]. */ 1105 bfd_signed_vma dist_got0 = dist_got_entry - got_offset; 1106 1107 /* Check whether we can use the short plt entry with 16-bit offset. */ 1108 bool short_plt_entry = 1109 (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000); 1110 1111 /* Copy the plt entry template. */ 1112 memcpy (splt->contents + offset, 1113 short_plt_entry ? tilepro_short_plt_entry : tilepro_long_plt_entry, 1114 PLT_ENTRY_SIZE); 1115 1116 /* Write the immediate offsets. */ 1117 pc = (tilepro_bundle_bits *)(splt->contents + offset); 1118 pc++; 1119 1120 if (!short_plt_entry) 1121 { 1122 /* { auli r28, r28, &GOTPLT[MY_GOT_INDEX] ; auli r27, r28, &GOTPLT[0] } */ 1123 *pc++ |= create_Imm16_X0 (tilepro_ha16 (dist_got_entry)) 1124 | create_Imm16_X1 (tilepro_ha16 (dist_got0)); 1125 } 1126 1127 /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; addli r27, r28, &GOTPLT[0] } or 1128 { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; addli r27, r27, &GOTPLT[0] } */ 1129 *pc++ |= create_Imm16_X0 (dist_got_entry) 1130 | create_Imm16_X1 (dist_got0); 1131 1132 /* { auli r29, zero, MY_PLT_INDEX ; lw r28, r28 } */ 1133 *pc |= create_Imm16_X0 (plt_index); 1134 1135 /* Set the relocation offset. */ 1136 *r_offset = got_offset; 1137 1138 return plt_index; 1139} 1140 1141#define TILEPRO_ELF_RELA_BYTES (sizeof(Elf32_External_Rela)) 1142 1143 1144/* Create an entry in an TILEPro ELF linker hash table. */ 1145 1146static struct bfd_hash_entry * 1147link_hash_newfunc (struct bfd_hash_entry *entry, 1148 struct bfd_hash_table *table, const char *string) 1149{ 1150 /* Allocate the structure if it has not already been allocated by a 1151 subclass. */ 1152 if (entry == NULL) 1153 { 1154 entry = 1155 bfd_hash_allocate (table, 1156 sizeof (struct tilepro_elf_link_hash_entry)); 1157 if (entry == NULL) 1158 return entry; 1159 } 1160 1161 /* Call the allocation method of the superclass. */ 1162 entry = _bfd_elf_link_hash_newfunc (entry, table, string); 1163 if (entry != NULL) 1164 { 1165 struct tilepro_elf_link_hash_entry *eh; 1166 1167 eh = (struct tilepro_elf_link_hash_entry *) entry; 1168 eh->tls_type = GOT_UNKNOWN; 1169 } 1170 1171 return entry; 1172} 1173 1174/* Create a TILEPRO ELF linker hash table. */ 1175 1176static struct bfd_link_hash_table * 1177tilepro_elf_link_hash_table_create (bfd *abfd) 1178{ 1179 struct elf_link_hash_table *ret; 1180 size_t amt = sizeof (struct elf_link_hash_table); 1181 1182 ret = (struct elf_link_hash_table *) bfd_zmalloc (amt); 1183 if (ret == NULL) 1184 return NULL; 1185 1186 if (!_bfd_elf_link_hash_table_init (ret, abfd, link_hash_newfunc, 1187 sizeof (struct tilepro_elf_link_hash_entry), 1188 TILEPRO_ELF_DATA)) 1189 { 1190 free (ret); 1191 return NULL; 1192 } 1193 1194 return &ret->root; 1195} 1196 1197/* Create the .got section. */ 1198 1199static bool 1200tilepro_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) 1201{ 1202 flagword flags; 1203 asection *s, *s_got; 1204 struct elf_link_hash_entry *h; 1205 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 1206 struct elf_link_hash_table *htab = elf_hash_table (info); 1207 1208 /* This function may be called more than once. */ 1209 if (htab->sgot != NULL) 1210 return true; 1211 1212 flags = bed->dynamic_sec_flags; 1213 1214 s = bfd_make_section_with_flags (abfd, 1215 (bed->rela_plts_and_copies_p 1216 ? ".rela.got" : ".rel.got"), 1217 (bed->dynamic_sec_flags 1218 | SEC_READONLY)); 1219 if (s == NULL 1220 || !bfd_set_section_alignment (s, bed->s->log_file_align)) 1221 return false; 1222 htab->srelgot = s; 1223 1224 s = s_got = bfd_make_section_with_flags (abfd, ".got", flags); 1225 if (s == NULL 1226 || !bfd_set_section_alignment (s, bed->s->log_file_align)) 1227 return false; 1228 htab->sgot = s; 1229 1230 /* The first bit of the global offset table is the header. */ 1231 s->size += bed->got_header_size; 1232 1233 if (bed->want_got_plt) 1234 { 1235 s = bfd_make_section_with_flags (abfd, ".got.plt", flags); 1236 if (s == NULL 1237 || !bfd_set_section_alignment (s, bed->s->log_file_align)) 1238 return false; 1239 htab->sgotplt = s; 1240 1241 /* Reserve room for the header. */ 1242 s->size += GOTPLT_HEADER_SIZE; 1243 } 1244 1245 if (bed->want_got_sym) 1246 { 1247 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got 1248 section. We don't do this in the linker script because we don't want 1249 to define the symbol if we are not creating a global offset 1250 table. */ 1251 h = _bfd_elf_define_linkage_sym (abfd, info, s_got, 1252 "_GLOBAL_OFFSET_TABLE_"); 1253 elf_hash_table (info)->hgot = h; 1254 if (h == NULL) 1255 return false; 1256 } 1257 1258 return true; 1259} 1260 1261/* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and 1262 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our 1263 hash table. */ 1264 1265static bool 1266tilepro_elf_create_dynamic_sections (bfd *dynobj, 1267 struct bfd_link_info *info) 1268{ 1269 if (!tilepro_elf_create_got_section (dynobj, info)) 1270 return false; 1271 1272 return _bfd_elf_create_dynamic_sections (dynobj, info); 1273} 1274 1275/* Copy the extra info we tack onto an elf_link_hash_entry. */ 1276 1277static void 1278tilepro_elf_copy_indirect_symbol (struct bfd_link_info *info, 1279 struct elf_link_hash_entry *dir, 1280 struct elf_link_hash_entry *ind) 1281{ 1282 struct tilepro_elf_link_hash_entry *edir, *eind; 1283 1284 edir = (struct tilepro_elf_link_hash_entry *) dir; 1285 eind = (struct tilepro_elf_link_hash_entry *) ind; 1286 1287 if (ind->root.type == bfd_link_hash_indirect 1288 && dir->got.refcount <= 0) 1289 { 1290 edir->tls_type = eind->tls_type; 1291 eind->tls_type = GOT_UNKNOWN; 1292 } 1293 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 1294} 1295 1296static int 1297tilepro_tls_translate_to_le (int r_type) 1298{ 1299 switch (r_type) 1300 { 1301 case R_TILEPRO_IMM16_X0_TLS_GD: 1302 case R_TILEPRO_IMM16_X0_TLS_IE: 1303 return R_TILEPRO_IMM16_X0_TLS_LE; 1304 1305 case R_TILEPRO_IMM16_X1_TLS_GD: 1306 case R_TILEPRO_IMM16_X1_TLS_IE: 1307 return R_TILEPRO_IMM16_X1_TLS_LE; 1308 1309 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 1310 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 1311 return R_TILEPRO_IMM16_X0_TLS_LE_LO; 1312 1313 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 1314 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 1315 return R_TILEPRO_IMM16_X1_TLS_LE_LO; 1316 1317 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 1318 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 1319 return R_TILEPRO_IMM16_X0_TLS_LE_HI; 1320 1321 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 1322 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 1323 return R_TILEPRO_IMM16_X1_TLS_LE_HI; 1324 1325 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 1326 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 1327 return R_TILEPRO_IMM16_X0_TLS_LE_HA; 1328 1329 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 1330 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 1331 return R_TILEPRO_IMM16_X1_TLS_LE_HA; 1332 } 1333 return r_type; 1334} 1335 1336static int 1337tilepro_tls_translate_to_ie (int r_type) 1338{ 1339 switch (r_type) 1340 { 1341 case R_TILEPRO_IMM16_X0_TLS_GD: 1342 case R_TILEPRO_IMM16_X0_TLS_IE: 1343 return R_TILEPRO_IMM16_X0_TLS_IE; 1344 1345 case R_TILEPRO_IMM16_X1_TLS_GD: 1346 case R_TILEPRO_IMM16_X1_TLS_IE: 1347 return R_TILEPRO_IMM16_X1_TLS_IE; 1348 1349 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 1350 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 1351 return R_TILEPRO_IMM16_X0_TLS_IE_LO; 1352 1353 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 1354 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 1355 return R_TILEPRO_IMM16_X1_TLS_IE_LO; 1356 1357 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 1358 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 1359 return R_TILEPRO_IMM16_X0_TLS_IE_HI; 1360 1361 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 1362 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 1363 return R_TILEPRO_IMM16_X1_TLS_IE_HI; 1364 1365 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 1366 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 1367 return R_TILEPRO_IMM16_X0_TLS_IE_HA; 1368 1369 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 1370 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 1371 return R_TILEPRO_IMM16_X1_TLS_IE_HA; 1372 } 1373 return r_type; 1374} 1375 1376static int 1377tilepro_elf_tls_transition (struct bfd_link_info *info, int r_type, 1378 int is_local) 1379{ 1380 if (!bfd_link_executable (info)) 1381 return r_type; 1382 1383 if (is_local) 1384 return tilepro_tls_translate_to_le (r_type); 1385 else 1386 return tilepro_tls_translate_to_ie (r_type); 1387} 1388 1389/* Look through the relocs for a section during the first phase, and 1390 allocate space in the global offset table or procedure linkage 1391 table. */ 1392 1393static bool 1394tilepro_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, 1395 asection *sec, const Elf_Internal_Rela *relocs) 1396{ 1397 struct elf_link_hash_table *htab; 1398 Elf_Internal_Shdr *symtab_hdr; 1399 struct elf_link_hash_entry **sym_hashes; 1400 const Elf_Internal_Rela *rel; 1401 const Elf_Internal_Rela *rel_end; 1402 asection *sreloc; 1403 int num_relocs; 1404 1405 if (bfd_link_relocatable (info)) 1406 return true; 1407 1408 htab = tilepro_elf_hash_table (info); 1409 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 1410 sym_hashes = elf_sym_hashes (abfd); 1411 1412 sreloc = NULL; 1413 1414 num_relocs = sec->reloc_count; 1415 1416 BFD_ASSERT (is_tilepro_elf (abfd) || num_relocs == 0); 1417 1418 if (htab->dynobj == NULL) 1419 htab->dynobj = abfd; 1420 1421 rel_end = relocs + num_relocs; 1422 for (rel = relocs; rel < rel_end; rel++) 1423 { 1424 unsigned int r_type; 1425 unsigned int r_symndx; 1426 struct elf_link_hash_entry *h; 1427 int tls_type; 1428 1429 r_symndx = ELF32_R_SYM (rel->r_info); 1430 r_type = ELF32_R_TYPE (rel->r_info); 1431 1432 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) 1433 { 1434 /* xgettext:c-format */ 1435 _bfd_error_handler (_("%pB: bad symbol index: %d"), 1436 abfd, r_symndx); 1437 return false; 1438 } 1439 1440 if (r_symndx < symtab_hdr->sh_info) 1441 h = NULL; 1442 else 1443 { 1444 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 1445 while (h->root.type == bfd_link_hash_indirect 1446 || h->root.type == bfd_link_hash_warning) 1447 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1448 } 1449 1450 r_type = tilepro_elf_tls_transition (info, r_type, h == NULL); 1451 switch (r_type) 1452 { 1453 case R_TILEPRO_IMM16_X0_TLS_LE: 1454 case R_TILEPRO_IMM16_X1_TLS_LE: 1455 case R_TILEPRO_IMM16_X0_TLS_LE_LO: 1456 case R_TILEPRO_IMM16_X1_TLS_LE_LO: 1457 case R_TILEPRO_IMM16_X0_TLS_LE_HI: 1458 case R_TILEPRO_IMM16_X1_TLS_LE_HI: 1459 case R_TILEPRO_IMM16_X0_TLS_LE_HA: 1460 case R_TILEPRO_IMM16_X1_TLS_LE_HA: 1461 if (!bfd_link_executable (info)) 1462 goto r_tilepro_plt32; 1463 break; 1464 1465 case R_TILEPRO_IMM16_X0_TLS_GD: 1466 case R_TILEPRO_IMM16_X1_TLS_GD: 1467 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 1468 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 1469 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 1470 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 1471 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 1472 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 1473 BFD_ASSERT (bfd_link_pic (info)); 1474 tls_type = GOT_TLS_GD; 1475 goto have_got_reference; 1476 1477 case R_TILEPRO_IMM16_X0_TLS_IE: 1478 case R_TILEPRO_IMM16_X1_TLS_IE: 1479 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 1480 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 1481 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 1482 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 1483 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 1484 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 1485 tls_type = GOT_TLS_IE; 1486 if (!bfd_link_executable (info)) 1487 info->flags |= DF_STATIC_TLS; 1488 goto have_got_reference; 1489 1490 case R_TILEPRO_IMM16_X0_GOT: 1491 case R_TILEPRO_IMM16_X1_GOT: 1492 case R_TILEPRO_IMM16_X0_GOT_LO: 1493 case R_TILEPRO_IMM16_X1_GOT_LO: 1494 case R_TILEPRO_IMM16_X0_GOT_HI: 1495 case R_TILEPRO_IMM16_X1_GOT_HI: 1496 case R_TILEPRO_IMM16_X0_GOT_HA: 1497 case R_TILEPRO_IMM16_X1_GOT_HA: 1498 tls_type = GOT_NORMAL; 1499 /* Fall Through */ 1500 1501 have_got_reference: 1502 /* This symbol requires a global offset table entry. */ 1503 { 1504 int old_tls_type; 1505 1506 if (h != NULL) 1507 { 1508 h->got.refcount += 1; 1509 old_tls_type = tilepro_elf_hash_entry(h)->tls_type; 1510 } 1511 else 1512 { 1513 bfd_signed_vma *local_got_refcounts; 1514 1515 /* This is a global offset table entry for a local symbol. */ 1516 local_got_refcounts = elf_local_got_refcounts (abfd); 1517 if (local_got_refcounts == NULL) 1518 { 1519 bfd_size_type size; 1520 1521 size = symtab_hdr->sh_info; 1522 size *= (sizeof (bfd_signed_vma) + sizeof(char)); 1523 local_got_refcounts = ((bfd_signed_vma *) 1524 bfd_zalloc (abfd, size)); 1525 if (local_got_refcounts == NULL) 1526 return false; 1527 elf_local_got_refcounts (abfd) = local_got_refcounts; 1528 _bfd_tilepro_elf_local_got_tls_type (abfd) 1529 = (char *) (local_got_refcounts + symtab_hdr->sh_info); 1530 } 1531 local_got_refcounts[r_symndx] += 1; 1532 old_tls_type = 1533 _bfd_tilepro_elf_local_got_tls_type (abfd) [r_symndx]; 1534 } 1535 1536 /* If a TLS symbol is accessed using IE at least once, 1537 there is no point to use dynamic model for it. */ 1538 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN 1539 && (old_tls_type != GOT_TLS_GD 1540 || tls_type != GOT_TLS_IE)) 1541 { 1542 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD) 1543 tls_type = old_tls_type; 1544 else 1545 { 1546 _bfd_error_handler 1547 /* xgettext:c-format */ 1548 (_("%pB: `%s' accessed both as normal and thread local symbol"), 1549 abfd, h ? h->root.root.string : "<local>"); 1550 return false; 1551 } 1552 } 1553 1554 if (old_tls_type != tls_type) 1555 { 1556 if (h != NULL) 1557 tilepro_elf_hash_entry (h)->tls_type = tls_type; 1558 else 1559 _bfd_tilepro_elf_local_got_tls_type (abfd) [r_symndx] = 1560 tls_type; 1561 } 1562 } 1563 1564 if (htab->sgot == NULL) 1565 { 1566 if (!tilepro_elf_create_got_section (htab->dynobj, info)) 1567 return false; 1568 } 1569 break; 1570 1571 case R_TILEPRO_TLS_GD_CALL: 1572 if (!bfd_link_executable (info)) 1573 { 1574 /* These are basically R_TILEPRO_JOFFLONG_X1_PLT relocs 1575 against __tls_get_addr. */ 1576 struct bfd_link_hash_entry *bh = NULL; 1577 if (! _bfd_generic_link_add_one_symbol (info, abfd, 1578 "__tls_get_addr", 0, 1579 bfd_und_section_ptr, 0, 1580 NULL, false, false, 1581 &bh)) 1582 return false; 1583 h = (struct elf_link_hash_entry *) bh; 1584 } 1585 else 1586 break; 1587 /* Fall through */ 1588 1589 case R_TILEPRO_JOFFLONG_X1_PLT: 1590 /* This symbol requires a procedure linkage table entry. We 1591 actually build the entry in adjust_dynamic_symbol, 1592 because this might be a case of linking PIC code without 1593 linking in any dynamic objects, in which case we don't 1594 need to generate a procedure linkage table after all. */ 1595 1596 if (h != NULL) 1597 { 1598 h->needs_plt = 1; 1599 h->plt.refcount += 1; 1600 } 1601 break; 1602 1603 case R_TILEPRO_32_PCREL: 1604 case R_TILEPRO_16_PCREL: 1605 case R_TILEPRO_8_PCREL: 1606 case R_TILEPRO_IMM16_X0_PCREL: 1607 case R_TILEPRO_IMM16_X1_PCREL: 1608 case R_TILEPRO_IMM16_X0_LO_PCREL: 1609 case R_TILEPRO_IMM16_X1_LO_PCREL: 1610 case R_TILEPRO_IMM16_X0_HI_PCREL: 1611 case R_TILEPRO_IMM16_X1_HI_PCREL: 1612 case R_TILEPRO_IMM16_X0_HA_PCREL: 1613 case R_TILEPRO_IMM16_X1_HA_PCREL: 1614 if (h != NULL) 1615 h->non_got_ref = 1; 1616 1617 if (h != NULL 1618 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 1619 break; 1620 /* Fall through. */ 1621 1622 case R_TILEPRO_32: 1623 case R_TILEPRO_16: 1624 case R_TILEPRO_8: 1625 case R_TILEPRO_LO16: 1626 case R_TILEPRO_HI16: 1627 case R_TILEPRO_HA16: 1628 case R_TILEPRO_COPY: 1629 case R_TILEPRO_GLOB_DAT: 1630 case R_TILEPRO_JMP_SLOT: 1631 case R_TILEPRO_RELATIVE: 1632 case R_TILEPRO_BROFF_X1: 1633 case R_TILEPRO_JOFFLONG_X1: 1634 case R_TILEPRO_IMM8_X0: 1635 case R_TILEPRO_IMM8_Y0: 1636 case R_TILEPRO_IMM8_X1: 1637 case R_TILEPRO_IMM8_Y1: 1638 case R_TILEPRO_DEST_IMM8_X1: 1639 case R_TILEPRO_MT_IMM15_X1: 1640 case R_TILEPRO_MF_IMM15_X1: 1641 case R_TILEPRO_IMM16_X0: 1642 case R_TILEPRO_IMM16_X1: 1643 case R_TILEPRO_IMM16_X0_LO: 1644 case R_TILEPRO_IMM16_X1_LO: 1645 case R_TILEPRO_IMM16_X0_HI: 1646 case R_TILEPRO_IMM16_X1_HI: 1647 case R_TILEPRO_IMM16_X0_HA: 1648 case R_TILEPRO_IMM16_X1_HA: 1649 case R_TILEPRO_MMSTART_X0: 1650 case R_TILEPRO_MMEND_X0: 1651 case R_TILEPRO_MMSTART_X1: 1652 case R_TILEPRO_MMEND_X1: 1653 case R_TILEPRO_SHAMT_X0: 1654 case R_TILEPRO_SHAMT_X1: 1655 case R_TILEPRO_SHAMT_Y0: 1656 case R_TILEPRO_SHAMT_Y1: 1657 if (h != NULL) 1658 h->non_got_ref = 1; 1659 1660 r_tilepro_plt32: 1661 if (h != NULL && !bfd_link_pic (info)) 1662 { 1663 /* We may need a .plt entry if the function this reloc 1664 refers to is in a shared lib. */ 1665 h->plt.refcount += 1; 1666 } 1667 1668 /* If we are creating a shared library, and this is a reloc 1669 against a global symbol, or a non PC relative reloc 1670 against a local symbol, then we need to copy the reloc 1671 into the shared library. However, if we are linking with 1672 -Bsymbolic, we do not need to copy a reloc against a 1673 global symbol which is defined in an object we are 1674 including in the link (i.e., DEF_REGULAR is set). At 1675 this point we have not seen all the input files, so it is 1676 possible that DEF_REGULAR is not set now but will be set 1677 later (it is never cleared). In case of a weak definition, 1678 DEF_REGULAR may be cleared later by a strong definition in 1679 a shared library. We account for that possibility below by 1680 storing information in the relocs_copied field of the hash 1681 table entry. A similar situation occurs when creating 1682 shared libraries and symbol visibility changes render the 1683 symbol local. 1684 1685 If on the other hand, we are creating an executable, we 1686 may need to keep relocations for symbols satisfied by a 1687 dynamic library if we manage to avoid copy relocs for the 1688 symbol. */ 1689 if ((bfd_link_pic (info) 1690 && (sec->flags & SEC_ALLOC) != 0 1691 && (! tilepro_elf_howto_table[r_type].pc_relative 1692 || (h != NULL 1693 && (! info->symbolic 1694 || h->root.type == bfd_link_hash_defweak 1695 || !h->def_regular)))) 1696 || (!bfd_link_pic (info) 1697 && (sec->flags & SEC_ALLOC) != 0 1698 && h != NULL 1699 && (h->root.type == bfd_link_hash_defweak 1700 || !h->def_regular))) 1701 { 1702 struct elf_dyn_relocs *p; 1703 struct elf_dyn_relocs **head; 1704 1705 /* When creating a shared object, we must copy these 1706 relocs into the output file. We create a reloc 1707 section in dynobj and make room for the reloc. */ 1708 if (sreloc == NULL) 1709 { 1710 sreloc = _bfd_elf_make_dynamic_reloc_section 1711 (sec, htab->dynobj, 2, abfd, /*rela?*/ true); 1712 1713 if (sreloc == NULL) 1714 return false; 1715 } 1716 1717 /* If this is a global symbol, we count the number of 1718 relocations we need for this symbol. */ 1719 if (h != NULL) 1720 head = &h->dyn_relocs; 1721 else 1722 { 1723 /* Track dynamic relocs needed for local syms too. 1724 We really need local syms available to do this 1725 easily. Oh well. */ 1726 1727 asection *s; 1728 void *vpp; 1729 Elf_Internal_Sym *isym; 1730 1731 isym = bfd_sym_from_r_symndx (&htab->sym_cache, 1732 abfd, r_symndx); 1733 if (isym == NULL) 1734 return false; 1735 1736 s = bfd_section_from_elf_index (abfd, isym->st_shndx); 1737 if (s == NULL) 1738 s = sec; 1739 1740 vpp = &elf_section_data (s)->local_dynrel; 1741 head = (struct elf_dyn_relocs **) vpp; 1742 } 1743 1744 p = *head; 1745 if (p == NULL || p->sec != sec) 1746 { 1747 size_t amt = sizeof *p; 1748 p = ((struct elf_dyn_relocs *) 1749 bfd_alloc (htab->dynobj, amt)); 1750 if (p == NULL) 1751 return false; 1752 p->next = *head; 1753 *head = p; 1754 p->sec = sec; 1755 p->count = 0; 1756 p->pc_count = 0; 1757 } 1758 1759 p->count += 1; 1760 if (tilepro_elf_howto_table[r_type].pc_relative) 1761 p->pc_count += 1; 1762 } 1763 1764 break; 1765 1766 case R_TILEPRO_GNU_VTINHERIT: 1767 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 1768 return false; 1769 break; 1770 1771 case R_TILEPRO_GNU_VTENTRY: 1772 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 1773 return false; 1774 break; 1775 1776 default: 1777 break; 1778 } 1779 } 1780 1781 return true; 1782} 1783 1784 1785static asection * 1786tilepro_elf_gc_mark_hook (asection *sec, 1787 struct bfd_link_info *info, 1788 Elf_Internal_Rela *rel, 1789 struct elf_link_hash_entry *h, 1790 Elf_Internal_Sym *sym) 1791{ 1792 if (h != NULL) 1793 { 1794 switch (ELF32_R_TYPE (rel->r_info)) 1795 { 1796 case R_TILEPRO_GNU_VTINHERIT: 1797 case R_TILEPRO_GNU_VTENTRY: 1798 return NULL; 1799 } 1800 } 1801 1802 /* FIXME: The test here, in check_relocs and in relocate_section 1803 dealing with TLS optimization, ought to be !bfd_link_executable (info). */ 1804 if (bfd_link_pic (info)) 1805 { 1806 struct bfd_link_hash_entry *bh; 1807 1808 switch (ELF32_R_TYPE (rel->r_info)) 1809 { 1810 case R_TILEPRO_TLS_GD_CALL: 1811 /* This reloc implicitly references __tls_get_addr. We know 1812 another reloc will reference the same symbol as the one 1813 on this reloc, so the real symbol and section will be 1814 gc marked when processing the other reloc. That lets 1815 us handle __tls_get_addr here. */ 1816 bh = NULL; 1817 if (! _bfd_generic_link_add_one_symbol (info, sec->owner, 1818 "__tls_get_addr", 0, 1819 bfd_und_section_ptr, 1820 0, NULL, false, 1821 false, &bh)) 1822 return NULL; 1823 h = (struct elf_link_hash_entry *) bh; 1824 BFD_ASSERT (h != NULL); 1825 h->mark = 1; 1826 if (h->is_weakalias) 1827 weakdef (h)->mark = 1; 1828 sym = NULL; 1829 } 1830 } 1831 1832 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 1833} 1834 1835/* Adjust a symbol defined by a dynamic object and referenced by a 1836 regular object. The current definition is in some section of the 1837 dynamic object, but we're not including those sections. We have to 1838 change the definition to something the rest of the link can 1839 understand. */ 1840 1841static bool 1842tilepro_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 1843 struct elf_link_hash_entry *h) 1844{ 1845 struct elf_link_hash_table *htab; 1846 asection *s, *srel; 1847 1848 htab = tilepro_elf_hash_table (info); 1849 BFD_ASSERT (htab != NULL); 1850 1851 /* Make sure we know what is going on here. */ 1852 BFD_ASSERT (htab->dynobj != NULL 1853 && (h->needs_plt 1854 || h->is_weakalias 1855 || (h->def_dynamic 1856 && h->ref_regular 1857 && !h->def_regular))); 1858 1859 /* If this is a function, put it in the procedure linkage table. We 1860 will fill in the contents of the procedure linkage table later 1861 (although we could actually do it here). */ 1862 if (h->type == STT_FUNC || h->needs_plt) 1863 { 1864 if (h->plt.refcount <= 0 1865 || SYMBOL_CALLS_LOCAL (info, h) 1866 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT 1867 && h->root.type == bfd_link_hash_undefweak)) 1868 { 1869 /* This case can occur if we saw a R_TILEPRO_JOFFLONG_X1_PLT 1870 reloc in an input file, but the symbol was never referred 1871 to by a dynamic object, or if all references were garbage 1872 collected. In such a case, we don't actually need to build 1873 a procedure linkage table, and we can just do a 1874 R_TILEPRO_JOFFLONG_X1 relocation instead. */ 1875 h->plt.offset = (bfd_vma) -1; 1876 h->needs_plt = 0; 1877 } 1878 1879 return true; 1880 } 1881 else 1882 h->plt.offset = (bfd_vma) -1; 1883 1884 /* If this is a weak symbol, and there is a real definition, the 1885 processor independent code will have arranged for us to see the 1886 real definition first, and we can just use the same value. */ 1887 if (h->is_weakalias) 1888 { 1889 struct elf_link_hash_entry *def = weakdef (h); 1890 BFD_ASSERT (def->root.type == bfd_link_hash_defined); 1891 h->root.u.def.section = def->root.u.def.section; 1892 h->root.u.def.value = def->root.u.def.value; 1893 return true; 1894 } 1895 1896 /* This is a reference to a symbol defined by a dynamic object which 1897 is not a function. */ 1898 1899 /* If we are creating a shared library, we must presume that the 1900 only references to the symbol are via the global offset table. 1901 For such cases we need not do anything here; the relocations will 1902 be handled correctly by relocate_section. */ 1903 if (bfd_link_pic (info)) 1904 return true; 1905 1906 /* If there are no references to this symbol that do not use the 1907 GOT, we don't need to generate a copy reloc. */ 1908 if (!h->non_got_ref) 1909 return true; 1910 1911 /* If -z nocopyreloc was given, we won't generate them either. */ 1912 if (info->nocopyreloc) 1913 { 1914 h->non_got_ref = 0; 1915 return true; 1916 } 1917 1918 /* If we don't find any dynamic relocs in read-only sections, then 1919 we'll be keeping the dynamic relocs and avoiding the copy reloc. */ 1920 if (!_bfd_elf_readonly_dynrelocs (h)) 1921 { 1922 h->non_got_ref = 0; 1923 return true; 1924 } 1925 1926 /* We must allocate the symbol in our .dynbss section, which will 1927 become part of the .bss section of the executable. There will be 1928 an entry for this symbol in the .dynsym section. The dynamic 1929 object will contain position independent code, so all references 1930 from the dynamic object to this symbol will go through the global 1931 offset table. The dynamic linker will use the .dynsym entry to 1932 determine the address it must put in the global offset table, so 1933 both the dynamic object and the regular object will refer to the 1934 same memory location for the variable. */ 1935 1936 /* We must generate a R_TILEPRO_COPY reloc to tell the dynamic linker 1937 to copy the initial value out of the dynamic object and into the 1938 runtime process image. We need to remember the offset into the 1939 .rel.bss section we are going to use. */ 1940 if ((h->root.u.def.section->flags & SEC_READONLY) != 0) 1941 { 1942 s = htab->sdynrelro; 1943 srel = htab->sreldynrelro; 1944 } 1945 else 1946 { 1947 s = htab->sdynbss; 1948 srel = htab->srelbss; 1949 } 1950 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) 1951 { 1952 srel->size += TILEPRO_ELF_RELA_BYTES; 1953 h->needs_copy = 1; 1954 } 1955 1956 return _bfd_elf_adjust_dynamic_copy (info, h, s); 1957} 1958 1959/* Allocate space in .plt, .got and associated reloc sections for 1960 dynamic relocs. */ 1961 1962static bool 1963allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) 1964{ 1965 struct bfd_link_info *info; 1966 struct elf_link_hash_table *htab; 1967 struct elf_dyn_relocs *p; 1968 1969 if (h->root.type == bfd_link_hash_indirect) 1970 return true; 1971 1972 info = (struct bfd_link_info *) inf; 1973 htab = tilepro_elf_hash_table (info); 1974 BFD_ASSERT (htab != NULL); 1975 1976 if (htab->dynamic_sections_created 1977 && h->plt.refcount > 0) 1978 { 1979 /* Make sure this symbol is output as a dynamic symbol. 1980 Undefined weak syms won't yet be marked as dynamic. */ 1981 if (h->dynindx == -1 1982 && !h->forced_local) 1983 { 1984 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 1985 return false; 1986 } 1987 1988 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) 1989 { 1990 asection *s = htab->splt; 1991 1992 /* Allocate room for the header. */ 1993 if (s->size == 0) 1994 { 1995 s->size = PLT_ENTRY_SIZE; 1996 } 1997 1998 h->plt.offset = s->size; 1999 2000 /* If this symbol is not defined in a regular file, and we are 2001 not generating a shared library, then set the symbol to this 2002 location in the .plt. This is required to make function 2003 pointers compare as equal between the normal executable and 2004 the shared library. */ 2005 if (! bfd_link_pic (info) 2006 && !h->def_regular) 2007 { 2008 h->root.u.def.section = s; 2009 h->root.u.def.value = h->plt.offset; 2010 } 2011 2012 /* Make room for this entry. */ 2013 s->size += PLT_ENTRY_SIZE; 2014 2015 /* We also need to make an entry in the .got.plt section. */ 2016 htab->sgotplt->size += GOT_ENTRY_SIZE; 2017 2018 /* We also need to make an entry in the .rela.plt section. */ 2019 htab->srelplt->size += TILEPRO_ELF_RELA_BYTES; 2020 } 2021 else 2022 { 2023 h->plt.offset = (bfd_vma) -1; 2024 h->needs_plt = 0; 2025 } 2026 } 2027 else 2028 { 2029 h->plt.offset = (bfd_vma) -1; 2030 h->needs_plt = 0; 2031 } 2032 2033 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE 2034 requiring no TLS entry. */ 2035 if (h->got.refcount > 0 2036 && bfd_link_executable (info) 2037 && h->dynindx == -1 2038 && tilepro_elf_hash_entry(h)->tls_type == GOT_TLS_IE) 2039 h->got.offset = (bfd_vma) -1; 2040 else if (h->got.refcount > 0) 2041 { 2042 asection *s; 2043 bool dyn; 2044 int tls_type = tilepro_elf_hash_entry(h)->tls_type; 2045 2046 /* Make sure this symbol is output as a dynamic symbol. 2047 Undefined weak syms won't yet be marked as dynamic. */ 2048 if (h->dynindx == -1 2049 && !h->forced_local) 2050 { 2051 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2052 return false; 2053 } 2054 2055 s = htab->sgot; 2056 h->got.offset = s->size; 2057 s->size += TILEPRO_BYTES_PER_WORD; 2058 /* R_TILEPRO_IMM16_Xn_TLS_GD entries need 2 consecutive GOT slots. */ 2059 if (tls_type == GOT_TLS_GD) 2060 s->size += TILEPRO_BYTES_PER_WORD; 2061 dyn = htab->dynamic_sections_created; 2062 /* R_TILEPRO_IMM16_Xn_TLS_IE_xxx needs one dynamic relocation, 2063 R_TILEPRO_IMM16_Xn_TLS_GD_xxx needs two if local symbol and two if 2064 global. */ 2065 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE) 2066 htab->srelgot->size += 2 * TILEPRO_ELF_RELA_BYTES; 2067 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2068 bfd_link_pic (info), 2069 h)) 2070 htab->srelgot->size += TILEPRO_ELF_RELA_BYTES; 2071 } 2072 else 2073 h->got.offset = (bfd_vma) -1; 2074 2075 if (h->dyn_relocs == NULL) 2076 return true; 2077 2078 /* In the shared -Bsymbolic case, discard space allocated for 2079 dynamic pc-relative relocs against symbols which turn out to be 2080 defined in regular objects. For the normal shared case, discard 2081 space for pc-relative relocs that have become local due to symbol 2082 visibility changes. */ 2083 2084 if (bfd_link_pic (info)) 2085 { 2086 if (SYMBOL_CALLS_LOCAL (info, h)) 2087 { 2088 struct elf_dyn_relocs **pp; 2089 2090 for (pp = &h->dyn_relocs; (p = *pp) != NULL; ) 2091 { 2092 p->count -= p->pc_count; 2093 p->pc_count = 0; 2094 if (p->count == 0) 2095 *pp = p->next; 2096 else 2097 pp = &p->next; 2098 } 2099 } 2100 2101 /* Also discard relocs on undefined weak syms with non-default 2102 visibility. */ 2103 if (h->dyn_relocs != NULL 2104 && h->root.type == bfd_link_hash_undefweak) 2105 { 2106 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT 2107 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) 2108 h->dyn_relocs = NULL; 2109 2110 /* Make sure undefined weak symbols are output as a dynamic 2111 symbol in PIEs. */ 2112 else if (h->dynindx == -1 2113 && !h->forced_local) 2114 { 2115 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2116 return false; 2117 } 2118 } 2119 } 2120 else 2121 { 2122 /* For the non-shared case, discard space for relocs against 2123 symbols which turn out to need copy relocs or are not 2124 dynamic. */ 2125 2126 if (!h->non_got_ref 2127 && ((h->def_dynamic 2128 && !h->def_regular) 2129 || (htab->dynamic_sections_created 2130 && (h->root.type == bfd_link_hash_undefweak 2131 || h->root.type == bfd_link_hash_undefined)))) 2132 { 2133 /* Make sure this symbol is output as a dynamic symbol. 2134 Undefined weak syms won't yet be marked as dynamic. */ 2135 if (h->dynindx == -1 2136 && !h->forced_local) 2137 { 2138 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2139 return false; 2140 } 2141 2142 /* If that succeeded, we know we'll be keeping all the 2143 relocs. */ 2144 if (h->dynindx != -1) 2145 goto keep; 2146 } 2147 2148 h->dyn_relocs = NULL; 2149 2150 keep: ; 2151 } 2152 2153 /* Finally, allocate space. */ 2154 for (p = h->dyn_relocs; p != NULL; p = p->next) 2155 { 2156 asection *sreloc = elf_section_data (p->sec)->sreloc; 2157 sreloc->size += p->count * TILEPRO_ELF_RELA_BYTES; 2158 } 2159 2160 return true; 2161} 2162 2163/* Return true if the dynamic symbol for a given section should be 2164 omitted when creating a shared library. */ 2165 2166static bool 2167tilepro_elf_omit_section_dynsym (bfd *output_bfd, 2168 struct bfd_link_info *info, 2169 asection *p) 2170{ 2171 /* We keep the .got section symbol so that explicit relocations 2172 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode 2173 can be turned into relocations against the .got symbol. */ 2174 if (strcmp (p->name, ".got") == 0) 2175 return false; 2176 2177 return _bfd_elf_omit_section_dynsym_default (output_bfd, info, p); 2178} 2179 2180/* Set the sizes of the dynamic sections. */ 2181 2182#define ELF32_DYNAMIC_INTERPRETER "/lib/ld.so.1" 2183 2184static bool 2185tilepro_elf_size_dynamic_sections (bfd *output_bfd, 2186 struct bfd_link_info *info) 2187{ 2188 (void)output_bfd; 2189 2190 struct elf_link_hash_table *htab; 2191 bfd *dynobj; 2192 asection *s; 2193 bfd *ibfd; 2194 2195 htab = tilepro_elf_hash_table (info); 2196 BFD_ASSERT (htab != NULL); 2197 dynobj = htab->dynobj; 2198 BFD_ASSERT (dynobj != NULL); 2199 2200 if (elf_hash_table (info)->dynamic_sections_created) 2201 { 2202 /* Set the contents of the .interp section to the interpreter. */ 2203 if (bfd_link_executable (info) && !info->nointerp) 2204 { 2205 s = bfd_get_linker_section (dynobj, ".interp"); 2206 BFD_ASSERT (s != NULL); 2207 s->size = sizeof ELF32_DYNAMIC_INTERPRETER; 2208 s->contents = (unsigned char *) ELF32_DYNAMIC_INTERPRETER; 2209 } 2210 } 2211 2212 /* Set up .got offsets for local syms, and space for local dynamic 2213 relocs. */ 2214 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) 2215 { 2216 bfd_signed_vma *local_got; 2217 bfd_signed_vma *end_local_got; 2218 char *local_tls_type; 2219 bfd_size_type locsymcount; 2220 Elf_Internal_Shdr *symtab_hdr; 2221 asection *srel; 2222 2223 if (! is_tilepro_elf (ibfd)) 2224 continue; 2225 2226 for (s = ibfd->sections; s != NULL; s = s->next) 2227 { 2228 struct elf_dyn_relocs *p; 2229 2230 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) 2231 { 2232 if (!bfd_is_abs_section (p->sec) 2233 && bfd_is_abs_section (p->sec->output_section)) 2234 { 2235 /* Input section has been discarded, either because 2236 it is a copy of a linkonce section or due to 2237 linker script /DISCARD/, so we'll be discarding 2238 the relocs too. */ 2239 } 2240 else if (p->count != 0) 2241 { 2242 srel = elf_section_data (p->sec)->sreloc; 2243 srel->size += p->count * TILEPRO_ELF_RELA_BYTES; 2244 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 2245 { 2246 info->flags |= DF_TEXTREL; 2247 2248 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"), 2249 p->sec->owner, p->sec); 2250 } 2251 } 2252 } 2253 } 2254 2255 local_got = elf_local_got_refcounts (ibfd); 2256 if (!local_got) 2257 continue; 2258 2259 symtab_hdr = &elf_symtab_hdr (ibfd); 2260 locsymcount = symtab_hdr->sh_info; 2261 end_local_got = local_got + locsymcount; 2262 local_tls_type = _bfd_tilepro_elf_local_got_tls_type (ibfd); 2263 s = htab->sgot; 2264 srel = htab->srelgot; 2265 for (; local_got < end_local_got; ++local_got, ++local_tls_type) 2266 { 2267 if (*local_got > 0) 2268 { 2269 *local_got = s->size; 2270 s->size += TILEPRO_BYTES_PER_WORD; 2271 if (*local_tls_type == GOT_TLS_GD) 2272 s->size += TILEPRO_BYTES_PER_WORD; 2273 if (bfd_link_pic (info) 2274 || *local_tls_type == GOT_TLS_GD 2275 || *local_tls_type == GOT_TLS_IE) 2276 srel->size += TILEPRO_ELF_RELA_BYTES; 2277 } 2278 else 2279 *local_got = (bfd_vma) -1; 2280 } 2281 } 2282 2283 /* Allocate global sym .plt and .got entries, and space for global 2284 sym dynamic relocs. */ 2285 elf_link_hash_traverse (htab, allocate_dynrelocs, info); 2286 2287 if (elf_hash_table (info)->dynamic_sections_created) 2288 { 2289 /* If the .got section is more than 0x8000 bytes, we add 2290 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16 2291 bit relocations have a greater chance of working. */ 2292 if (htab->sgot->size >= 0x8000 2293 && elf_hash_table (info)->hgot->root.u.def.value == 0) 2294 elf_hash_table (info)->hgot->root.u.def.value = 0x8000; 2295 } 2296 2297 if (htab->sgotplt) 2298 { 2299 struct elf_link_hash_entry *got; 2300 got = elf_link_hash_lookup (elf_hash_table (info), 2301 "_GLOBAL_OFFSET_TABLE_", 2302 false, false, false); 2303 2304 /* Don't allocate .got.plt section if there are no GOT nor PLT 2305 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */ 2306 if ((got == NULL 2307 || !got->ref_regular_nonweak) 2308 && (htab->sgotplt->size 2309 == GOTPLT_HEADER_SIZE) 2310 && (htab->splt == NULL 2311 || htab->splt->size == 0) 2312 && (htab->sgot == NULL 2313 || (htab->sgot->size 2314 == get_elf_backend_data (output_bfd)->got_header_size))) 2315 htab->sgotplt->size = 0; 2316 } 2317 2318 /* The check_relocs and adjust_dynamic_symbol entry points have 2319 determined the sizes of the various dynamic sections. Allocate 2320 memory for them. */ 2321 for (s = dynobj->sections; s != NULL; s = s->next) 2322 { 2323 if ((s->flags & SEC_LINKER_CREATED) == 0) 2324 continue; 2325 2326 if (s == htab->splt 2327 || s == htab->sgot 2328 || s == htab->sgotplt 2329 || s == htab->sdynbss 2330 || s == htab->sdynrelro) 2331 { 2332 /* Strip this section if we don't need it; see the 2333 comment below. */ 2334 } 2335 else if (startswith (s->name, ".rela")) 2336 { 2337 if (s->size != 0) 2338 { 2339 /* We use the reloc_count field as a counter if we need 2340 to copy relocs into the output file. */ 2341 s->reloc_count = 0; 2342 } 2343 } 2344 else 2345 { 2346 /* It's not one of our sections. */ 2347 continue; 2348 } 2349 2350 if (s->size == 0) 2351 { 2352 /* If we don't need this section, strip it from the 2353 output file. This is mostly to handle .rela.bss and 2354 .rela.plt. We must create both sections in 2355 create_dynamic_sections, because they must be created 2356 before the linker maps input sections to output 2357 sections. The linker does that before 2358 adjust_dynamic_symbol is called, and it is that 2359 function which decides whether anything needs to go 2360 into these sections. */ 2361 s->flags |= SEC_EXCLUDE; 2362 continue; 2363 } 2364 2365 if ((s->flags & SEC_HAS_CONTENTS) == 0) 2366 continue; 2367 2368 /* Allocate memory for the section contents. Zero the memory 2369 for the benefit of .rela.plt, which has 4 unused entries 2370 at the beginning, and we don't want garbage. */ 2371 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); 2372 if (s->contents == NULL) 2373 return false; 2374 } 2375 2376 return _bfd_elf_add_dynamic_tags (output_bfd, info, true); 2377} 2378 2379/* Return the base VMA address which should be subtracted from real addresses 2380 when resolving @dtpoff relocation. 2381 This is PT_TLS segment p_vaddr. */ 2382 2383static bfd_vma 2384dtpoff_base (struct bfd_link_info *info) 2385{ 2386 /* If tls_sec is NULL, we should have signalled an error already. */ 2387 if (elf_hash_table (info)->tls_sec == NULL) 2388 return 0; 2389 return elf_hash_table (info)->tls_sec->vma; 2390} 2391 2392/* Return the relocation value for R_TILEPRO_TLS_TPOFF32. */ 2393 2394static bfd_vma 2395tpoff (struct bfd_link_info *info, bfd_vma address) 2396{ 2397 struct elf_link_hash_table *htab = elf_hash_table (info); 2398 2399 /* If tls_sec is NULL, we should have signalled an error already. */ 2400 if (htab->tls_sec == NULL) 2401 return 0; 2402 2403 return (address - htab->tls_sec->vma); 2404} 2405 2406/* Replace the MASK bits in ADDR with those in INSN, for the next 2407 TILEPRO_BUNDLE_SIZE_IN_BYTES bytes. */ 2408 2409static void 2410tilepro_replace_insn (bfd_byte *addr, const bfd_byte *mask, 2411 const bfd_byte *insn) 2412{ 2413 int i; 2414 for (i = 0; i < TILEPRO_BUNDLE_SIZE_IN_BYTES; i++) 2415 { 2416 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]); 2417 } 2418} 2419 2420/* Mask to extract the bits corresponding to an instruction in a 2421 specific pipe of a bundle. */ 2422static const bfd_byte insn_mask_X1[] = { 2423 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x7f 2424}; 2425 2426/* Mask to extract the bits corresponding to an instruction in a 2427 specific pipe of a bundle, minus the destination operand and the 2428 first source operand. */ 2429static const bfd_byte insn_mask_X0_no_dest_no_srca[] = { 2430 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00 2431}; 2432 2433static const bfd_byte insn_mask_X1_no_dest_no_srca[] = { 2434 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x7f 2435}; 2436 2437static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = { 2438 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00 2439}; 2440 2441static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = { 2442 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x78 2443}; 2444 2445/* Mask to extract the first source operand of an instruction. */ 2446static const bfd_byte srca_mask_X0[] = { 2447 0xc0, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 2448}; 2449 2450static const bfd_byte srca_mask_X1[] = { 2451 0x00, 0x00, 0x00, 0x00, 0xe0, 0x07, 0x00, 0x00 2452}; 2453 2454/* Various instructions synthesized to support tls references. */ 2455 2456/* move r0, r0 in the X1 pipe, used for tls le. */ 2457static const bfd_byte insn_tls_le_move_X1[] = { 2458 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x33, 0x08 2459}; 2460 2461/* move r0, zero in the X0 and X1 pipe, used for tls le. */ 2462static const bfd_byte insn_tls_le_move_zero_X0X1[] = { 2463 0xc0, 0xff, 0xcf, 0x00, 0xe0, 0xff, 0x33, 0x08 2464}; 2465 2466/* lw r0, r0 in the X1 pipe, used for tls ie. */ 2467static const bfd_byte insn_tls_ie_lw_X1[] = { 2468 0x00, 0x00, 0x00, 0x00, 0x00, 0x70, 0x0b, 0x40 2469}; 2470 2471/* add r0, r0, tp in various pipes, used for tls ie. */ 2472static const bfd_byte insn_tls_ie_add_X0X1[] = { 2473 0x00, 0x50, 0x0f, 0x00, 0x00, 0xa8, 0x07, 0x08 2474}; 2475static const bfd_byte insn_tls_ie_add_Y0Y1[] = { 2476 0x00, 0x50, 0x03, 0x08, 0x00, 0xa8, 0x01, 0x8c 2477}; 2478 2479/* move r0, r0 in various pipes, used for tls gd. */ 2480static const bfd_byte insn_tls_gd_add_X0X1[] = { 2481 0x00, 0xf0, 0xcf, 0x00, 0x00, 0xf8, 0x33, 0x08 2482}; 2483static const bfd_byte insn_tls_gd_add_Y0Y1[] = { 2484 0x00, 0xf0, 0x0b, 0x18, 0x00, 0xf8, 0x05, 0x9c 2485}; 2486 2487/* Relocate an TILEPRO ELF section. 2488 2489 The RELOCATE_SECTION function is called by the new ELF backend linker 2490 to handle the relocations for a section. 2491 2492 The relocs are always passed as Rela structures. 2493 2494 This function is responsible for adjusting the section contents as 2495 necessary, and (if generating a relocatable output file) adjusting 2496 the reloc addend as necessary. 2497 2498 This function does not have to worry about setting the reloc 2499 address or the reloc symbol index. 2500 2501 LOCAL_SYMS is a pointer to the swapped in local symbols. 2502 2503 LOCAL_SECTIONS is an array giving the section in the input file 2504 corresponding to the st_shndx field of each local symbol. 2505 2506 The global hash table entry for the global symbols can be found 2507 via elf_sym_hashes (input_bfd). 2508 2509 When generating relocatable output, this function must handle 2510 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 2511 going to be the section symbol corresponding to the output 2512 section, which means that the addend must be adjusted 2513 accordingly. */ 2514 2515static int 2516tilepro_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, 2517 bfd *input_bfd, asection *input_section, 2518 bfd_byte *contents, Elf_Internal_Rela *relocs, 2519 Elf_Internal_Sym *local_syms, 2520 asection **local_sections) 2521{ 2522 struct elf_link_hash_table *htab; 2523 Elf_Internal_Shdr *symtab_hdr; 2524 struct elf_link_hash_entry **sym_hashes; 2525 bfd_vma *local_got_offsets; 2526 bfd_vma got_base; 2527 asection *sreloc; 2528 Elf_Internal_Rela *rel; 2529 Elf_Internal_Rela *relend; 2530 int num_relocs; 2531 2532 htab = tilepro_elf_hash_table (info); 2533 BFD_ASSERT (htab != NULL); 2534 symtab_hdr = &elf_symtab_hdr (input_bfd); 2535 sym_hashes = elf_sym_hashes (input_bfd); 2536 local_got_offsets = elf_local_got_offsets (input_bfd); 2537 2538 if (elf_hash_table (info)->hgot == NULL) 2539 got_base = 0; 2540 else 2541 got_base = elf_hash_table (info)->hgot->root.u.def.value; 2542 2543 sreloc = elf_section_data (input_section)->sreloc; 2544 2545 rel = relocs; 2546 num_relocs = input_section->reloc_count; 2547 relend = relocs + num_relocs; 2548 for (; rel < relend; rel++) 2549 { 2550 int r_type, tls_type; 2551 bool is_tls_iele, is_tls_le; 2552 reloc_howto_type *howto; 2553 unsigned long r_symndx; 2554 struct elf_link_hash_entry *h; 2555 Elf_Internal_Sym *sym; 2556 tilepro_create_func create_func; 2557 asection *sec; 2558 bfd_vma relocation; 2559 bfd_reloc_status_type r; 2560 const char *name; 2561 bfd_vma off; 2562 bool is_plt = false; 2563 bool resolved_to_zero; 2564 bool unresolved_reloc; 2565 2566 r_type = ELF32_R_TYPE (rel->r_info); 2567 if (r_type == R_TILEPRO_GNU_VTINHERIT 2568 || r_type == R_TILEPRO_GNU_VTENTRY) 2569 continue; 2570 2571 if ((unsigned int)r_type >= NELEMS(tilepro_elf_howto_table)) 2572 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type); 2573 2574 howto = tilepro_elf_howto_table + r_type; 2575 2576 /* This is a final link. */ 2577 r_symndx = ELF32_R_SYM (rel->r_info); 2578 h = NULL; 2579 sym = NULL; 2580 sec = NULL; 2581 unresolved_reloc = false; 2582 if (r_symndx < symtab_hdr->sh_info) 2583 { 2584 sym = local_syms + r_symndx; 2585 sec = local_sections[r_symndx]; 2586 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2587 } 2588 else 2589 { 2590 bool warned ATTRIBUTE_UNUSED; 2591 bool ignored ATTRIBUTE_UNUSED; 2592 2593 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 2594 r_symndx, symtab_hdr, sym_hashes, 2595 h, sec, relocation, 2596 unresolved_reloc, warned, ignored); 2597 if (warned) 2598 { 2599 /* To avoid generating warning messages about truncated 2600 relocations, set the relocation's address to be the same as 2601 the start of this section. */ 2602 if (input_section->output_section != NULL) 2603 relocation = input_section->output_section->vma; 2604 else 2605 relocation = 0; 2606 } 2607 } 2608 2609 if (sec != NULL && discarded_section (sec)) 2610 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 2611 rel, 1, relend, howto, 0, contents); 2612 2613 if (bfd_link_relocatable (info)) 2614 continue; 2615 2616 if (h != NULL) 2617 name = h->root.root.string; 2618 else 2619 { 2620 name = (bfd_elf_string_from_elf_section 2621 (input_bfd, symtab_hdr->sh_link, sym->st_name)); 2622 if (name == NULL || *name == '\0') 2623 name = bfd_section_name (sec); 2624 } 2625 2626 switch (r_type) 2627 { 2628 case R_TILEPRO_TLS_GD_CALL: 2629 case R_TILEPRO_IMM8_X0_TLS_GD_ADD: 2630 case R_TILEPRO_IMM8_Y0_TLS_GD_ADD: 2631 case R_TILEPRO_IMM8_X1_TLS_GD_ADD: 2632 case R_TILEPRO_IMM8_Y1_TLS_GD_ADD: 2633 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 2634 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 2635 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 2636 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 2637 tls_type = GOT_UNKNOWN; 2638 if (h == NULL && local_got_offsets) 2639 tls_type = 2640 _bfd_tilepro_elf_local_got_tls_type (input_bfd) [r_symndx]; 2641 else if (h != NULL) 2642 tls_type = tilepro_elf_hash_entry(h)->tls_type; 2643 2644 is_tls_iele = (bfd_link_executable (info) || tls_type == GOT_TLS_IE); 2645 is_tls_le = is_tls_iele && (bfd_link_executable (info) 2646 && (h == NULL || h->dynindx == -1)); 2647 2648 if (r_type == R_TILEPRO_TLS_GD_CALL) 2649 { 2650 if (is_tls_le) 2651 { 2652 /* GD -> LE */ 2653 tilepro_replace_insn (contents + rel->r_offset, 2654 insn_mask_X1, insn_tls_le_move_X1); 2655 continue; 2656 } 2657 else if (is_tls_iele) 2658 { 2659 /* GD -> IE */ 2660 tilepro_replace_insn (contents + rel->r_offset, 2661 insn_mask_X1, insn_tls_ie_lw_X1); 2662 continue; 2663 } 2664 2665 /* GD -> GD */ 2666 h = (struct elf_link_hash_entry *) 2667 bfd_link_hash_lookup (info->hash, "__tls_get_addr", false, 2668 false, true); 2669 BFD_ASSERT (h != NULL); 2670 r_type = R_TILEPRO_JOFFLONG_X1_PLT; 2671 howto = tilepro_elf_howto_table + r_type; 2672 } 2673 else if (r_type == R_TILEPRO_IMM16_X0_TLS_GD_HA 2674 || r_type == R_TILEPRO_IMM16_X0_TLS_IE_HA) 2675 { 2676 if (is_tls_le) 2677 tilepro_replace_insn (contents + rel->r_offset, srca_mask_X0, 2678 insn_tls_le_move_zero_X0X1); 2679 } 2680 else if (r_type == R_TILEPRO_IMM16_X1_TLS_GD_HA 2681 || r_type == R_TILEPRO_IMM16_X1_TLS_IE_HA) 2682 { 2683 if (is_tls_le) 2684 tilepro_replace_insn (contents + rel->r_offset, srca_mask_X1, 2685 insn_tls_le_move_zero_X0X1); 2686 } 2687 else 2688 { 2689 const bfd_byte *mask = NULL; 2690 const bfd_byte *add_insn = NULL; 2691 2692 switch (r_type) 2693 { 2694 case R_TILEPRO_IMM8_X0_TLS_GD_ADD: 2695 add_insn = is_tls_iele ? insn_tls_ie_add_X0X1 2696 : insn_tls_gd_add_X0X1; 2697 mask = insn_mask_X0_no_dest_no_srca; 2698 break; 2699 case R_TILEPRO_IMM8_X1_TLS_GD_ADD: 2700 add_insn = is_tls_iele ? insn_tls_ie_add_X0X1 2701 : insn_tls_gd_add_X0X1; 2702 mask = insn_mask_X1_no_dest_no_srca; 2703 break; 2704 case R_TILEPRO_IMM8_Y0_TLS_GD_ADD: 2705 add_insn = is_tls_iele ? insn_tls_ie_add_Y0Y1 2706 : insn_tls_gd_add_Y0Y1; 2707 mask = insn_mask_Y0_no_dest_no_srca; 2708 break; 2709 case R_TILEPRO_IMM8_Y1_TLS_GD_ADD: 2710 add_insn = is_tls_iele ? insn_tls_ie_add_Y0Y1 2711 : insn_tls_gd_add_Y0Y1; 2712 mask = insn_mask_Y1_no_dest_no_srca; 2713 break; 2714 } 2715 2716 tilepro_replace_insn (contents + rel->r_offset, mask, add_insn); 2717 2718 continue; 2719 } 2720 break; 2721 case R_TILEPRO_TLS_IE_LOAD: 2722 if (bfd_link_executable (info) && (h == NULL || h->dynindx == -1)) 2723 /* IE -> LE */ 2724 tilepro_replace_insn (contents + rel->r_offset, 2725 insn_mask_X1_no_dest_no_srca, 2726 insn_tls_le_move_X1); 2727 else 2728 /* IE -> IE */ 2729 tilepro_replace_insn (contents + rel->r_offset, 2730 insn_mask_X1_no_dest_no_srca, 2731 insn_tls_ie_lw_X1); 2732 continue; 2733 break; 2734 default: 2735 break; 2736 } 2737 2738 resolved_to_zero = (h != NULL 2739 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); 2740 2741 switch (r_type) 2742 { 2743 case R_TILEPRO_IMM16_X0_GOT: 2744 case R_TILEPRO_IMM16_X1_GOT: 2745 case R_TILEPRO_IMM16_X0_GOT_LO: 2746 case R_TILEPRO_IMM16_X1_GOT_LO: 2747 case R_TILEPRO_IMM16_X0_GOT_HI: 2748 case R_TILEPRO_IMM16_X1_GOT_HI: 2749 case R_TILEPRO_IMM16_X0_GOT_HA: 2750 case R_TILEPRO_IMM16_X1_GOT_HA: 2751 /* Relocation is to the entry for this symbol in the global 2752 offset table. */ 2753 if (htab->sgot == NULL) 2754 abort (); 2755 2756 if (h != NULL) 2757 { 2758 bool dyn; 2759 2760 off = h->got.offset; 2761 BFD_ASSERT (off != (bfd_vma) -1); 2762 dyn = elf_hash_table (info)->dynamic_sections_created; 2763 2764 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2765 bfd_link_pic (info), 2766 h) 2767 || (bfd_link_pic (info) 2768 && SYMBOL_REFERENCES_LOCAL (info, h))) 2769 { 2770 /* This is actually a static link, or it is a 2771 -Bsymbolic link and the symbol is defined 2772 locally, or the symbol was forced to be local 2773 because of a version file. We must initialize 2774 this entry in the global offset table. Since the 2775 offset must always be a multiple 2776 of 4 for 32-bit, we use the least significant bit 2777 to record whether we have initialized it already. 2778 2779 When doing a dynamic link, we create a .rela.got 2780 relocation entry to initialize the value. This 2781 is done in the finish_dynamic_symbol routine. */ 2782 if ((off & 1) != 0) 2783 off &= ~1; 2784 else 2785 { 2786 bfd_put_32 (output_bfd, relocation, 2787 htab->sgot->contents + off); 2788 h->got.offset |= 1; 2789 } 2790 } 2791 else 2792 unresolved_reloc = false; 2793 } 2794 else 2795 { 2796 BFD_ASSERT (local_got_offsets != NULL 2797 && local_got_offsets[r_symndx] != (bfd_vma) -1); 2798 2799 off = local_got_offsets[r_symndx]; 2800 2801 /* The offset must always be a multiple of 4 on 32-bit. 2802 We use the least significant bit to record 2803 whether we have already processed this entry. */ 2804 if ((off & 1) != 0) 2805 off &= ~1; 2806 else 2807 { 2808 if (bfd_link_pic (info)) 2809 { 2810 asection *s; 2811 Elf_Internal_Rela outrel; 2812 2813 /* We need to generate a R_TILEPRO_RELATIVE reloc 2814 for the dynamic linker. */ 2815 s = htab->srelgot; 2816 BFD_ASSERT (s != NULL); 2817 2818 outrel.r_offset = (htab->sgot->output_section->vma 2819 + htab->sgot->output_offset 2820 + off); 2821 outrel.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE); 2822 outrel.r_addend = relocation; 2823 relocation = 0; 2824 tilepro_elf_append_rela_32 (output_bfd, s, &outrel); 2825 } 2826 2827 bfd_put_32 (output_bfd, relocation, 2828 htab->sgot->contents + off); 2829 local_got_offsets[r_symndx] |= 1; 2830 } 2831 } 2832 relocation = off - got_base; 2833 break; 2834 2835 case R_TILEPRO_JOFFLONG_X1_PLT: 2836 /* Relocation is to the entry for this symbol in the 2837 procedure linkage table. */ 2838 BFD_ASSERT (h != NULL); 2839 2840 if (h->plt.offset == (bfd_vma) -1 || htab->splt == NULL) 2841 { 2842 /* We didn't make a PLT entry for this symbol. This 2843 happens when statically linking PIC code, or when 2844 using -Bsymbolic. */ 2845 break; 2846 } 2847 2848 relocation = (htab->splt->output_section->vma 2849 + htab->splt->output_offset 2850 + h->plt.offset); 2851 unresolved_reloc = false; 2852 break; 2853 2854 case R_TILEPRO_32_PCREL: 2855 case R_TILEPRO_16_PCREL: 2856 case R_TILEPRO_8_PCREL: 2857 case R_TILEPRO_IMM16_X0_PCREL: 2858 case R_TILEPRO_IMM16_X1_PCREL: 2859 case R_TILEPRO_IMM16_X0_LO_PCREL: 2860 case R_TILEPRO_IMM16_X1_LO_PCREL: 2861 case R_TILEPRO_IMM16_X0_HI_PCREL: 2862 case R_TILEPRO_IMM16_X1_HI_PCREL: 2863 case R_TILEPRO_IMM16_X0_HA_PCREL: 2864 case R_TILEPRO_IMM16_X1_HA_PCREL: 2865 if (h != NULL 2866 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 2867 break; 2868 /* Fall through. */ 2869 case R_TILEPRO_32: 2870 case R_TILEPRO_16: 2871 case R_TILEPRO_8: 2872 case R_TILEPRO_LO16: 2873 case R_TILEPRO_HI16: 2874 case R_TILEPRO_HA16: 2875 case R_TILEPRO_COPY: 2876 case R_TILEPRO_GLOB_DAT: 2877 case R_TILEPRO_JMP_SLOT: 2878 case R_TILEPRO_RELATIVE: 2879 case R_TILEPRO_BROFF_X1: 2880 case R_TILEPRO_JOFFLONG_X1: 2881 case R_TILEPRO_IMM8_X0: 2882 case R_TILEPRO_IMM8_Y0: 2883 case R_TILEPRO_IMM8_X1: 2884 case R_TILEPRO_IMM8_Y1: 2885 case R_TILEPRO_DEST_IMM8_X1: 2886 case R_TILEPRO_MT_IMM15_X1: 2887 case R_TILEPRO_MF_IMM15_X1: 2888 case R_TILEPRO_IMM16_X0: 2889 case R_TILEPRO_IMM16_X1: 2890 case R_TILEPRO_IMM16_X0_LO: 2891 case R_TILEPRO_IMM16_X1_LO: 2892 case R_TILEPRO_IMM16_X0_HI: 2893 case R_TILEPRO_IMM16_X1_HI: 2894 case R_TILEPRO_IMM16_X0_HA: 2895 case R_TILEPRO_IMM16_X1_HA: 2896 case R_TILEPRO_MMSTART_X0: 2897 case R_TILEPRO_MMEND_X0: 2898 case R_TILEPRO_MMSTART_X1: 2899 case R_TILEPRO_MMEND_X1: 2900 case R_TILEPRO_SHAMT_X0: 2901 case R_TILEPRO_SHAMT_X1: 2902 case R_TILEPRO_SHAMT_Y0: 2903 case R_TILEPRO_SHAMT_Y1: 2904 if ((input_section->flags & SEC_ALLOC) == 0) 2905 break; 2906 2907 if ((bfd_link_pic (info) 2908 && (h == NULL 2909 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 2910 && !resolved_to_zero) 2911 || h->root.type != bfd_link_hash_undefweak) 2912 && (! howto->pc_relative 2913 || !SYMBOL_CALLS_LOCAL (info, h))) 2914 || (!bfd_link_pic (info) 2915 && h != NULL 2916 && h->dynindx != -1 2917 && !h->non_got_ref 2918 && ((h->def_dynamic 2919 && !h->def_regular) 2920 || h->root.type == bfd_link_hash_undefweak 2921 || h->root.type == bfd_link_hash_undefined))) 2922 { 2923 Elf_Internal_Rela outrel; 2924 bool skip, relocate = false; 2925 2926 /* When generating a shared object, these relocations 2927 are copied into the output file to be resolved at run 2928 time. */ 2929 2930 BFD_ASSERT (sreloc != NULL); 2931 2932 skip = false; 2933 2934 outrel.r_offset = 2935 _bfd_elf_section_offset (output_bfd, info, input_section, 2936 rel->r_offset); 2937 if (outrel.r_offset == (bfd_vma) -1) 2938 skip = true; 2939 else if (outrel.r_offset == (bfd_vma) -2) 2940 skip = true, relocate = true; 2941 outrel.r_offset += (input_section->output_section->vma 2942 + input_section->output_offset); 2943 2944 switch (r_type) 2945 { 2946 case R_TILEPRO_32_PCREL: 2947 case R_TILEPRO_16_PCREL: 2948 case R_TILEPRO_8_PCREL: 2949 /* If the symbol is not dynamic, we should not keep 2950 a dynamic relocation. But an .rela.* slot has been 2951 allocated for it, output R_TILEPRO_NONE. 2952 FIXME: Add code tracking needed dynamic relocs as 2953 e.g. i386 has. */ 2954 if (h->dynindx == -1) 2955 skip = true, relocate = true; 2956 break; 2957 } 2958 2959 if (skip) 2960 memset (&outrel, 0, sizeof outrel); 2961 /* h->dynindx may be -1 if the symbol was marked to 2962 become local. */ 2963 else if (h != NULL && 2964 h->dynindx != -1 2965 && (! is_plt 2966 || !bfd_link_pic (info) 2967 || !SYMBOLIC_BIND (info, h) 2968 || !h->def_regular)) 2969 { 2970 BFD_ASSERT (h->dynindx != -1); 2971 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 2972 outrel.r_addend = rel->r_addend; 2973 } 2974 else 2975 { 2976 if (r_type == R_TILEPRO_32) 2977 { 2978 outrel.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE); 2979 outrel.r_addend = relocation + rel->r_addend; 2980 } 2981 else 2982 { 2983 long indx; 2984 2985 outrel.r_addend = relocation + rel->r_addend; 2986 2987 if (is_plt) 2988 sec = htab->splt; 2989 2990 if (bfd_is_abs_section (sec)) 2991 indx = 0; 2992 else if (sec == NULL || sec->owner == NULL) 2993 { 2994 bfd_set_error (bfd_error_bad_value); 2995 return false; 2996 } 2997 else 2998 { 2999 asection *osec; 3000 3001 /* We are turning this relocation into one 3002 against a section symbol. It would be 3003 proper to subtract the symbol's value, 3004 osec->vma, from the emitted reloc addend, 3005 but ld.so expects buggy relocs. */ 3006 osec = sec->output_section; 3007 indx = elf_section_data (osec)->dynindx; 3008 3009 if (indx == 0) 3010 { 3011 osec = htab->text_index_section; 3012 indx = elf_section_data (osec)->dynindx; 3013 } 3014 3015 /* FIXME: we really should be able to link non-pic 3016 shared libraries. */ 3017 if (indx == 0) 3018 { 3019 BFD_FAIL (); 3020 _bfd_error_handler 3021 (_("%pB: probably compiled without -fPIC?"), 3022 input_bfd); 3023 bfd_set_error (bfd_error_bad_value); 3024 return false; 3025 } 3026 } 3027 3028 outrel.r_info = ELF32_R_INFO (indx, r_type); 3029 } 3030 } 3031 3032 tilepro_elf_append_rela_32 (output_bfd, sreloc, &outrel); 3033 3034 /* This reloc will be computed at runtime, so there's no 3035 need to do anything now. */ 3036 if (! relocate) 3037 continue; 3038 } 3039 break; 3040 3041 case R_TILEPRO_IMM16_X0_TLS_LE: 3042 case R_TILEPRO_IMM16_X1_TLS_LE: 3043 case R_TILEPRO_IMM16_X0_TLS_LE_LO: 3044 case R_TILEPRO_IMM16_X1_TLS_LE_LO: 3045 case R_TILEPRO_IMM16_X0_TLS_LE_HI: 3046 case R_TILEPRO_IMM16_X1_TLS_LE_HI: 3047 case R_TILEPRO_IMM16_X0_TLS_LE_HA: 3048 case R_TILEPRO_IMM16_X1_TLS_LE_HA: 3049 if (!bfd_link_executable (info)) 3050 { 3051 Elf_Internal_Rela outrel; 3052 bool skip; 3053 3054 BFD_ASSERT (sreloc != NULL); 3055 skip = false; 3056 outrel.r_offset = 3057 _bfd_elf_section_offset (output_bfd, info, input_section, 3058 rel->r_offset); 3059 if (outrel.r_offset == (bfd_vma) -1) 3060 skip = true; 3061 else if (outrel.r_offset == (bfd_vma) -2) 3062 skip = true; 3063 outrel.r_offset += (input_section->output_section->vma 3064 + input_section->output_offset); 3065 if (skip) 3066 memset (&outrel, 0, sizeof outrel); 3067 else 3068 { 3069 outrel.r_info = ELF32_R_INFO (0, r_type); 3070 outrel.r_addend = relocation - dtpoff_base (info) 3071 + rel->r_addend; 3072 } 3073 3074 tilepro_elf_append_rela_32 (output_bfd, sreloc, &outrel); 3075 continue; 3076 } 3077 relocation = tpoff (info, relocation); 3078 break; 3079 3080 case R_TILEPRO_IMM16_X0_TLS_GD: 3081 case R_TILEPRO_IMM16_X1_TLS_GD: 3082 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 3083 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 3084 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 3085 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 3086 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 3087 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 3088 case R_TILEPRO_IMM16_X0_TLS_IE: 3089 case R_TILEPRO_IMM16_X1_TLS_IE: 3090 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 3091 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 3092 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 3093 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 3094 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 3095 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 3096 r_type = tilepro_elf_tls_transition (info, r_type, h == NULL); 3097 tls_type = GOT_UNKNOWN; 3098 if (h == NULL && local_got_offsets) 3099 tls_type 3100 = _bfd_tilepro_elf_local_got_tls_type (input_bfd) [r_symndx]; 3101 else if (h != NULL) 3102 { 3103 tls_type = tilepro_elf_hash_entry(h)->tls_type; 3104 if (bfd_link_executable (info) 3105 && h->dynindx == -1 3106 && tls_type == GOT_TLS_IE) 3107 r_type = tilepro_tls_translate_to_le (r_type); 3108 } 3109 if (tls_type == GOT_TLS_IE) 3110 r_type = tilepro_tls_translate_to_ie (r_type); 3111 3112 if (r_type == R_TILEPRO_IMM16_X0_TLS_LE 3113 || r_type == R_TILEPRO_IMM16_X1_TLS_LE 3114 || r_type == R_TILEPRO_IMM16_X0_TLS_LE_LO 3115 || r_type == R_TILEPRO_IMM16_X1_TLS_LE_LO 3116 || r_type == R_TILEPRO_IMM16_X0_TLS_LE_HI 3117 || r_type == R_TILEPRO_IMM16_X1_TLS_LE_HI 3118 || r_type == R_TILEPRO_IMM16_X0_TLS_LE_HA 3119 || r_type == R_TILEPRO_IMM16_X1_TLS_LE_HA) 3120 { 3121 relocation = tpoff (info, relocation); 3122 break; 3123 } 3124 3125 if (h != NULL) 3126 { 3127 off = h->got.offset; 3128 h->got.offset |= 1; 3129 } 3130 else 3131 { 3132 BFD_ASSERT (local_got_offsets != NULL); 3133 off = local_got_offsets[r_symndx]; 3134 local_got_offsets[r_symndx] |= 1; 3135 } 3136 3137 if (htab->sgot == NULL) 3138 abort (); 3139 3140 if ((off & 1) != 0) 3141 off &= ~1; 3142 else 3143 { 3144 Elf_Internal_Rela outrel; 3145 int indx = 0; 3146 bool need_relocs = false; 3147 3148 if (htab->srelgot == NULL) 3149 abort (); 3150 3151 if (h != NULL) 3152 { 3153 bool dyn; 3154 dyn = htab->dynamic_sections_created; 3155 3156 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 3157 bfd_link_pic (info), 3158 h) 3159 && (!bfd_link_pic (info) 3160 || !SYMBOL_REFERENCES_LOCAL (info, h))) 3161 { 3162 indx = h->dynindx; 3163 } 3164 } 3165 3166 /* The GOT entries have not been initialized yet. Do it 3167 now, and emit any relocations. */ 3168 if ((bfd_link_pic (info) || indx != 0) 3169 && (h == NULL 3170 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 3171 || h->root.type != bfd_link_hash_undefweak)) 3172 need_relocs = true; 3173 3174 switch (r_type) 3175 { 3176 case R_TILEPRO_IMM16_X0_TLS_IE: 3177 case R_TILEPRO_IMM16_X1_TLS_IE: 3178 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 3179 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 3180 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 3181 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 3182 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 3183 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 3184 if (need_relocs) { 3185 bfd_put_32 (output_bfd, 0, htab->sgot->contents + off); 3186 outrel.r_offset = (htab->sgot->output_section->vma 3187 + htab->sgot->output_offset + off); 3188 outrel.r_addend = 0; 3189 if (indx == 0) 3190 outrel.r_addend = relocation - dtpoff_base (info); 3191 outrel.r_info = ELF32_R_INFO (indx, R_TILEPRO_TLS_TPOFF32); 3192 tilepro_elf_append_rela_32 (output_bfd, htab->srelgot, 3193 &outrel); 3194 } else { 3195 bfd_put_32 (output_bfd, tpoff (info, relocation), 3196 htab->sgot->contents + off); 3197 } 3198 break; 3199 3200 case R_TILEPRO_IMM16_X0_TLS_GD: 3201 case R_TILEPRO_IMM16_X1_TLS_GD: 3202 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 3203 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 3204 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 3205 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 3206 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 3207 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 3208 if (need_relocs) { 3209 outrel.r_offset = (htab->sgot->output_section->vma 3210 + htab->sgot->output_offset + off); 3211 outrel.r_addend = 0; 3212 outrel.r_info = ELF32_R_INFO (indx, R_TILEPRO_TLS_DTPMOD32); 3213 bfd_put_32 (output_bfd, 0, htab->sgot->contents + off); 3214 tilepro_elf_append_rela_32 (output_bfd, htab->srelgot, 3215 &outrel); 3216 if (indx == 0) 3217 { 3218 BFD_ASSERT (! unresolved_reloc); 3219 bfd_put_32 (output_bfd, 3220 relocation - dtpoff_base (info), 3221 (htab->sgot->contents + off + 3222 TILEPRO_BYTES_PER_WORD)); 3223 } 3224 else 3225 { 3226 bfd_put_32 (output_bfd, 0, 3227 (htab->sgot->contents + off + 3228 TILEPRO_BYTES_PER_WORD)); 3229 outrel.r_info = ELF32_R_INFO (indx, 3230 R_TILEPRO_TLS_DTPOFF32); 3231 outrel.r_offset += TILEPRO_BYTES_PER_WORD; 3232 tilepro_elf_append_rela_32 (output_bfd, 3233 htab->srelgot, &outrel); 3234 } 3235 } 3236 3237 else { 3238 /* If we are not emitting relocations for a 3239 general dynamic reference, then we must be in a 3240 static link or an executable link with the 3241 symbol binding locally. Mark it as belonging 3242 to module 1, the executable. */ 3243 bfd_put_32 (output_bfd, 1, 3244 htab->sgot->contents + off ); 3245 bfd_put_32 (output_bfd, relocation - dtpoff_base (info), 3246 htab->sgot->contents + off + 3247 TILEPRO_BYTES_PER_WORD); 3248 } 3249 break; 3250 } 3251 } 3252 3253 if (off >= (bfd_vma) -2) 3254 abort (); 3255 3256 relocation = off - got_base; 3257 unresolved_reloc = false; 3258 howto = tilepro_elf_howto_table + r_type; 3259 break; 3260 3261 default: 3262 break; 3263 } 3264 3265 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections 3266 because such sections are not SEC_ALLOC and thus ld.so will 3267 not process them. */ 3268 if (unresolved_reloc 3269 && !((input_section->flags & SEC_DEBUGGING) != 0 3270 && h->def_dynamic) 3271 && _bfd_elf_section_offset (output_bfd, info, input_section, 3272 rel->r_offset) != (bfd_vma) -1) 3273 _bfd_error_handler 3274 /* xgettext:c-format */ 3275 (_("%pB(%pA+%#" PRIx64 "): " 3276 "unresolvable %s relocation against symbol `%s'"), 3277 input_bfd, 3278 input_section, 3279 (uint64_t) rel->r_offset, 3280 howto->name, 3281 h->root.root.string); 3282 3283 r = bfd_reloc_continue; 3284 3285 /* For the _HA types, we add 0x8000 so that if bit 15 is set, 3286 * we will increment bit 16. The howto->rightshift takes care 3287 * of the rest for us. */ 3288 switch (r_type) 3289 { 3290 case R_TILEPRO_HA16: 3291 case R_TILEPRO_IMM16_X0_HA: 3292 case R_TILEPRO_IMM16_X1_HA: 3293 case R_TILEPRO_IMM16_X0_HA_PCREL: 3294 case R_TILEPRO_IMM16_X1_HA_PCREL: 3295 case R_TILEPRO_IMM16_X0_GOT_HA: 3296 case R_TILEPRO_IMM16_X1_GOT_HA: 3297 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 3298 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 3299 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 3300 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 3301 relocation += 0x8000; 3302 break; 3303 } 3304 3305 /* Get the operand creation function, if any. */ 3306 create_func = reloc_to_create_func[r_type]; 3307 if (create_func == NULL) 3308 { 3309 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3310 contents, rel->r_offset, 3311 relocation, rel->r_addend); 3312 } 3313 else 3314 { 3315 if (howto->pc_relative) 3316 { 3317 relocation -= 3318 input_section->output_section->vma + input_section->output_offset; 3319 if (howto->pcrel_offset) 3320 relocation -= rel->r_offset; 3321 } 3322 3323 bfd_byte *data; 3324 3325 /* Add the relocation addend if any to the final target value */ 3326 relocation += rel->r_addend; 3327 3328 /* Do basic range checking */ 3329 r = bfd_check_overflow (howto->complain_on_overflow, 3330 howto->bitsize, 3331 howto->rightshift, 3332 32, 3333 relocation); 3334 3335 /* 3336 * Write the relocated value out into the raw section data. 3337 * Don't put a relocation out in the .rela section. 3338 */ 3339 tilepro_bundle_bits mask = create_func(-1); 3340 tilepro_bundle_bits value = create_func(relocation >> howto->rightshift); 3341 3342 /* Only touch bytes while the mask is not 0, so we 3343 don't write to out of bounds memory if this is actually 3344 a 16-bit switch instruction. */ 3345 for (data = contents + rel->r_offset; mask != 0; data++) 3346 { 3347 bfd_byte byte_mask = (bfd_byte)mask; 3348 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask); 3349 mask >>= 8; 3350 value >>= 8; 3351 } 3352 } 3353 3354 if (r != bfd_reloc_ok) 3355 { 3356 const char *msg = NULL; 3357 3358 switch (r) 3359 { 3360 case bfd_reloc_overflow: 3361 (*info->callbacks->reloc_overflow) 3362 (info, (h ? &h->root : NULL), name, howto->name, 3363 (bfd_vma) 0, input_bfd, input_section, rel->r_offset); 3364 break; 3365 3366 case bfd_reloc_undefined: 3367 (*info->callbacks->undefined_symbol) 3368 (info, name, input_bfd, input_section, rel->r_offset, true); 3369 break; 3370 3371 case bfd_reloc_outofrange: 3372 msg = _("internal error: out of range error"); 3373 break; 3374 3375 case bfd_reloc_notsupported: 3376 msg = _("internal error: unsupported relocation error"); 3377 break; 3378 3379 case bfd_reloc_dangerous: 3380 msg = _("internal error: dangerous relocation"); 3381 break; 3382 3383 default: 3384 msg = _("internal error: unknown error"); 3385 break; 3386 } 3387 3388 if (msg) 3389 (*info->callbacks->warning) (info, msg, name, input_bfd, 3390 input_section, rel->r_offset); 3391 } 3392 } 3393 3394 return true; 3395} 3396 3397/* Finish up dynamic symbol handling. We set the contents of various 3398 dynamic sections here. */ 3399 3400static bool 3401tilepro_elf_finish_dynamic_symbol (bfd *output_bfd, 3402 struct bfd_link_info *info, 3403 struct elf_link_hash_entry *h, 3404 Elf_Internal_Sym *sym) 3405{ 3406 struct elf_link_hash_table *htab; 3407 3408 htab = tilepro_elf_hash_table (info); 3409 BFD_ASSERT (htab != NULL); 3410 3411 if (h->plt.offset != (bfd_vma) -1) 3412 { 3413 asection *splt; 3414 asection *srela; 3415 asection *sgotplt; 3416 Elf_Internal_Rela rela; 3417 bfd_byte *loc; 3418 bfd_vma r_offset; 3419 3420 int rela_index; 3421 3422 /* This symbol has an entry in the PLT. Set it up. */ 3423 3424 BFD_ASSERT (h->dynindx != -1); 3425 3426 splt = htab->splt; 3427 srela = htab->srelplt; 3428 sgotplt = htab->sgotplt; 3429 3430 if (splt == NULL || srela == NULL) 3431 abort (); 3432 3433 /* Fill in the entry in the procedure linkage table. */ 3434 rela_index = tilepro_plt_entry_build (splt, sgotplt, h->plt.offset, 3435 &r_offset); 3436 3437 /* Fill in the entry in the global offset table, which initially points 3438 to the beginning of the plt. */ 3439 bfd_put_32 (output_bfd, splt->output_section->vma + splt->output_offset, 3440 sgotplt->contents + r_offset); 3441 3442 /* Fill in the entry in the .rela.plt section. */ 3443 rela.r_offset = (sgotplt->output_section->vma 3444 + sgotplt->output_offset 3445 + r_offset); 3446 rela.r_addend = 0; 3447 rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_JMP_SLOT); 3448 3449 loc = srela->contents + rela_index * sizeof (Elf32_External_Rela); 3450 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3451 3452 if (!h->def_regular) 3453 { 3454 /* Mark the symbol as undefined, rather than as defined in 3455 the .plt section. Leave the value alone. */ 3456 sym->st_shndx = SHN_UNDEF; 3457 /* If the symbol is weak, we do need to clear the value. 3458 Otherwise, the PLT entry would provide a definition for 3459 the symbol even if the symbol wasn't defined anywhere, 3460 and so the symbol would never be NULL. */ 3461 if (!h->ref_regular_nonweak) 3462 sym->st_value = 0; 3463 } 3464 } 3465 3466 if (h->got.offset != (bfd_vma) -1 3467 && tilepro_elf_hash_entry(h)->tls_type != GOT_TLS_GD 3468 && tilepro_elf_hash_entry(h)->tls_type != GOT_TLS_IE) 3469 { 3470 asection *sgot; 3471 asection *srela; 3472 Elf_Internal_Rela rela; 3473 3474 /* This symbol has an entry in the GOT. Set it up. */ 3475 3476 sgot = htab->sgot; 3477 srela = htab->srelgot; 3478 BFD_ASSERT (sgot != NULL && srela != NULL); 3479 3480 rela.r_offset = (sgot->output_section->vma 3481 + sgot->output_offset 3482 + (h->got.offset &~ (bfd_vma) 1)); 3483 3484 /* If this is a -Bsymbolic link, and the symbol is defined 3485 locally, we just want to emit a RELATIVE reloc. Likewise if 3486 the symbol was forced to be local because of a version file. 3487 The entry in the global offset table will already have been 3488 initialized in the relocate_section function. */ 3489 if (bfd_link_pic (info) 3490 && (info->symbolic || h->dynindx == -1) 3491 && h->def_regular) 3492 { 3493 asection *sec = h->root.u.def.section; 3494 rela.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE); 3495 rela.r_addend = (h->root.u.def.value 3496 + sec->output_section->vma 3497 + sec->output_offset); 3498 } 3499 else 3500 { 3501 rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_GLOB_DAT); 3502 rela.r_addend = 0; 3503 } 3504 3505 bfd_put_32 (output_bfd, 0, 3506 sgot->contents + (h->got.offset & ~(bfd_vma) 1)); 3507 tilepro_elf_append_rela_32 (output_bfd, srela, &rela); 3508 } 3509 3510 if (h->needs_copy) 3511 { 3512 asection *s; 3513 Elf_Internal_Rela rela; 3514 3515 /* This symbols needs a copy reloc. Set it up. */ 3516 BFD_ASSERT (h->dynindx != -1); 3517 3518 rela.r_offset = (h->root.u.def.value 3519 + h->root.u.def.section->output_section->vma 3520 + h->root.u.def.section->output_offset); 3521 rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_COPY); 3522 rela.r_addend = 0; 3523 if (h->root.u.def.section == htab->sdynrelro) 3524 s = htab->sreldynrelro; 3525 else 3526 s = htab->srelbss; 3527 tilepro_elf_append_rela_32 (output_bfd, s, &rela); 3528 } 3529 3530 /* Mark some specially defined symbols as absolute. */ 3531 if (h == htab->hdynamic 3532 || (h == htab->hgot || h == htab->hplt)) 3533 sym->st_shndx = SHN_ABS; 3534 3535 return true; 3536} 3537 3538/* Finish up the dynamic sections. */ 3539 3540static bool 3541tilepro_finish_dyn (bfd *output_bfd, struct bfd_link_info *info, 3542 bfd *dynobj, asection *sdyn, 3543 asection *splt ATTRIBUTE_UNUSED) 3544{ 3545 Elf32_External_Dyn *dyncon, *dynconend; 3546 struct elf_link_hash_table *htab; 3547 3548 htab = tilepro_elf_hash_table (info); 3549 BFD_ASSERT (htab != NULL); 3550 dyncon = (Elf32_External_Dyn *) sdyn->contents; 3551 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); 3552 for (; dyncon < dynconend; dyncon++) 3553 { 3554 Elf_Internal_Dyn dyn; 3555 asection *s; 3556 3557 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 3558 3559 switch (dyn.d_tag) 3560 { 3561 case DT_PLTGOT: 3562 s = htab->sgotplt; 3563 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 3564 break; 3565 case DT_JMPREL: 3566 s = htab->srelplt; 3567 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 3568 break; 3569 case DT_PLTRELSZ: 3570 s = htab->srelplt; 3571 dyn.d_un.d_val = s->size; 3572 break; 3573 default: 3574 continue; 3575 } 3576 3577 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3578 } 3579 return true; 3580} 3581 3582static bool 3583tilepro_elf_finish_dynamic_sections (bfd *output_bfd, 3584 struct bfd_link_info *info) 3585{ 3586 bfd *dynobj; 3587 asection *sdyn; 3588 struct elf_link_hash_table *htab; 3589 3590 htab = tilepro_elf_hash_table (info); 3591 BFD_ASSERT (htab != NULL); 3592 dynobj = htab->dynobj; 3593 3594 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 3595 3596 if (elf_hash_table (info)->dynamic_sections_created) 3597 { 3598 asection *splt; 3599 bool ret; 3600 3601 splt = htab->splt; 3602 BFD_ASSERT (splt != NULL && sdyn != NULL); 3603 3604 ret = tilepro_finish_dyn (output_bfd, info, dynobj, sdyn, splt); 3605 3606 if (!ret) 3607 return ret; 3608 3609 /* Fill in the first entry in the procedure linkage table. */ 3610 if (splt->size > 0) 3611 { 3612 memcpy (splt->contents, tilepro_plt0_entry, PLT_HEADER_SIZE); 3613 memset (splt->contents + PLT_HEADER_SIZE, 0, 3614 PLT_ENTRY_SIZE - PLT_HEADER_SIZE); 3615 } 3616 3617 if (elf_section_data (splt->output_section) != NULL) 3618 elf_section_data (splt->output_section)->this_hdr.sh_entsize 3619 = PLT_ENTRY_SIZE; 3620 } 3621 3622 if (htab->sgotplt) 3623 { 3624 if (bfd_is_abs_section (htab->sgotplt->output_section)) 3625 { 3626 _bfd_error_handler 3627 (_("discarded output section: `%pA'"), htab->sgotplt); 3628 return false; 3629 } 3630 3631 if (htab->sgotplt->size > 0) 3632 { 3633 /* Write the first two entries in .got.plt, needed for the dynamic 3634 linker. */ 3635 bfd_put_32 (output_bfd, (bfd_vma) -1, 3636 htab->sgotplt->contents); 3637 bfd_put_32 (output_bfd, (bfd_vma) 0, 3638 htab->sgotplt->contents + GOT_ENTRY_SIZE); 3639 } 3640 3641 elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize 3642 = GOT_ENTRY_SIZE; 3643 } 3644 3645 if (htab->sgot) 3646 { 3647 if (htab->sgot->size > 0) 3648 { 3649 /* Set the first entry in the global offset table to the address of 3650 the dynamic section. */ 3651 bfd_vma val = (sdyn ? 3652 sdyn->output_section->vma + sdyn->output_offset : 3653 0); 3654 bfd_put_32 (output_bfd, val, htab->sgot->contents); 3655 } 3656 3657 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize 3658 = GOT_ENTRY_SIZE; 3659 } 3660 3661 return true; 3662} 3663 3664 3665 3666/* Return address for Ith PLT stub in section PLT, for relocation REL 3667 or (bfd_vma) -1 if it should not be included. */ 3668 3669static bfd_vma 3670tilepro_elf_plt_sym_val (bfd_vma i, const asection *plt, 3671 const arelent *rel ATTRIBUTE_UNUSED) 3672{ 3673 return plt->vma + (i + 1) * PLT_ENTRY_SIZE; 3674} 3675 3676static enum elf_reloc_type_class 3677tilepro_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, 3678 const asection *rel_sec ATTRIBUTE_UNUSED, 3679 const Elf_Internal_Rela *rela) 3680{ 3681 switch ((int) ELF32_R_TYPE (rela->r_info)) 3682 { 3683 case R_TILEPRO_RELATIVE: 3684 return reloc_class_relative; 3685 case R_TILEPRO_JMP_SLOT: 3686 return reloc_class_plt; 3687 case R_TILEPRO_COPY: 3688 return reloc_class_copy; 3689 default: 3690 return reloc_class_normal; 3691 } 3692} 3693 3694static int 3695tilepro_additional_program_headers (bfd *abfd, 3696 struct bfd_link_info *info ATTRIBUTE_UNUSED) 3697{ 3698 /* Each .intrpt section specified by the user adds another PT_LOAD 3699 header since the sections are discontiguous. */ 3700 static const char intrpt_sections[4][9] = 3701 { 3702 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3" 3703 }; 3704 int count = 0; 3705 int i; 3706 3707 for (i = 0; i < 4; i++) 3708 { 3709 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]); 3710 if (sec != NULL && (sec->flags & SEC_LOAD) != 0) 3711 ++count; 3712 } 3713 3714 /* Add four "padding" headers in to leave room in case a custom linker 3715 script does something fancy. Otherwise ld complains that it ran 3716 out of program headers and refuses to link. */ 3717 count += 4; 3718 3719 return count; 3720} 3721 3722#define ELF_ARCH bfd_arch_tilepro 3723#define ELF_TARGET_ID TILEPRO_ELF_DATA 3724#define ELF_MACHINE_CODE EM_TILEPRO 3725#define ELF_MAXPAGESIZE 0x10000 3726#define ELF_COMMONPAGESIZE 0x10000 3727 3728#define TARGET_LITTLE_SYM tilepro_elf32_vec 3729#define TARGET_LITTLE_NAME "elf32-tilepro" 3730 3731#define elf_backend_reloc_type_class tilepro_reloc_type_class 3732 3733#define bfd_elf32_bfd_reloc_name_lookup tilepro_reloc_name_lookup 3734#define bfd_elf32_bfd_link_hash_table_create tilepro_elf_link_hash_table_create 3735#define bfd_elf32_bfd_reloc_type_lookup tilepro_reloc_type_lookup 3736 3737#define elf_backend_copy_indirect_symbol tilepro_elf_copy_indirect_symbol 3738#define elf_backend_create_dynamic_sections tilepro_elf_create_dynamic_sections 3739#define elf_backend_check_relocs tilepro_elf_check_relocs 3740#define elf_backend_adjust_dynamic_symbol tilepro_elf_adjust_dynamic_symbol 3741#define elf_backend_omit_section_dynsym tilepro_elf_omit_section_dynsym 3742#define elf_backend_size_dynamic_sections tilepro_elf_size_dynamic_sections 3743#define elf_backend_relocate_section tilepro_elf_relocate_section 3744#define elf_backend_finish_dynamic_symbol tilepro_elf_finish_dynamic_symbol 3745#define elf_backend_finish_dynamic_sections tilepro_elf_finish_dynamic_sections 3746#define elf_backend_gc_mark_hook tilepro_elf_gc_mark_hook 3747#define elf_backend_plt_sym_val tilepro_elf_plt_sym_val 3748#define elf_info_to_howto_rel NULL 3749#define elf_info_to_howto tilepro_info_to_howto_rela 3750#define elf_backend_grok_prstatus tilepro_elf_grok_prstatus 3751#define elf_backend_grok_psinfo tilepro_elf_grok_psinfo 3752#define elf_backend_additional_program_headers tilepro_additional_program_headers 3753 3754#define bfd_elf32_mkobject tilepro_elf_mkobject 3755 3756#define elf_backend_init_index_section _bfd_elf_init_1_index_section 3757 3758#define elf_backend_can_gc_sections 1 3759#define elf_backend_can_refcount 1 3760#define elf_backend_want_got_plt 1 3761#define elf_backend_plt_readonly 1 3762/* Align PLT mod 64 byte L2 line size. */ 3763#define elf_backend_plt_alignment 6 3764#define elf_backend_want_plt_sym 1 3765#define elf_backend_got_header_size GOT_ENTRY_SIZE 3766#define elf_backend_want_dynrelro 1 3767#define elf_backend_rela_normal 1 3768#define elf_backend_default_execstack 0 3769 3770#include "elf32-target.h" 3771