1 /* TILE-Gx-specific support for ELF. 2 Copyright (C) 2011-2020 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/tilegx.h" 26 #include "opcode/tilegx.h" 27 #include "libiberty.h" 28 #include "elfxx-tilegx.h" 29 30 #define ABI_64_P(abfd) \ 31 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64) 32 33 #define TILEGX_ELF_WORD_BYTES(htab) \ 34 ((htab)->bytes_per_word) 35 36 /* The size of an external RELA relocation. */ 37 #define TILEGX_ELF_RELA_BYTES(htab) \ 38 ((htab)->bytes_per_rela) 39 40 /* Both 32-bit and 64-bit tilegx encode this in an identical manner, 41 so just take advantage of that. */ 42 #define TILEGX_ELF_R_TYPE(r_info) \ 43 ((r_info) & 0xFF) 44 45 #define TILEGX_ELF_R_INFO(htab, in_rel, index, type) \ 46 ((htab)->r_info (in_rel, index, type)) 47 48 #define TILEGX_ELF_R_SYMNDX(htab, r_info) \ 49 ((htab)->r_symndx(r_info)) 50 51 #define TILEGX_ELF_DTPOFF_RELOC(htab) \ 52 ((htab)->dtpoff_reloc) 53 54 #define TILEGX_ELF_DTPMOD_RELOC(htab) \ 55 ((htab)->dtpmod_reloc) 56 57 #define TILEGX_ELF_TPOFF_RELOC(htab) \ 58 ((htab)->tpoff_reloc) 59 60 #define TILEGX_ELF_PUT_WORD(htab, bfd, val, ptr) \ 61 ((htab)->put_word (bfd, val, ptr)) 62 63 /* The name of the dynamic interpreter. This is put in the .interp 64 section. */ 65 66 #define ELF64_DYNAMIC_INTERPRETER "/lib/ld.so.1" 67 #define ELF32_DYNAMIC_INTERPRETER "/lib32/ld.so.1" 68 69 70 static reloc_howto_type tilegx_elf_howto_table [] = 71 { 72 /* This reloc does nothing. */ 73 HOWTO (R_TILEGX_NONE, /* type */ 74 0, /* rightshift */ 75 3, /* size (0 = byte, 1 = short, 2 = long) */ 76 0, /* bitsize */ 77 FALSE, /* pc_relative */ 78 0, /* bitpos */ 79 complain_overflow_dont, /* complain_on_overflow */ 80 bfd_elf_generic_reloc, /* special_function */ 81 "R_TILEGX_NONE", /* name */ 82 FALSE, /* partial_inplace */ 83 0, /* src_mask */ 84 0, /* dst_mask */ 85 FALSE), /* pcrel_offset */ 86 #ifdef BFD64 87 /* A 64 bit absolute relocation. */ 88 HOWTO (R_TILEGX_64, /* type */ 89 0, /* rightshift */ 90 4, /* size (0 = byte, 1 = short, 2 = long) */ 91 64, /* bitsize */ 92 FALSE, /* pc_relative */ 93 0, /* bitpos */ 94 complain_overflow_dont, /* complain_on_overflow */ 95 bfd_elf_generic_reloc, /* special_function */ 96 "R_TILEGX_64", /* name */ 97 FALSE, /* partial_inplace */ 98 0, /* src_mask */ 99 0xffffffffffffffffULL, /* dst_mask */ 100 FALSE), /* pcrel_offset */ 101 #endif 102 /* A 32 bit absolute relocation. */ 103 HOWTO (R_TILEGX_32, /* type */ 104 0, /* rightshift */ 105 2, /* size (0 = byte, 1 = short, 2 = long) */ 106 32, /* bitsize */ 107 FALSE, /* pc_relative */ 108 0, /* bitpos */ 109 complain_overflow_dont, /* complain_on_overflow */ 110 bfd_elf_generic_reloc, /* special_function */ 111 "R_TILEGX_32", /* name */ 112 FALSE, /* partial_inplace */ 113 0, /* src_mask */ 114 0xffffffff, /* dst_mask */ 115 FALSE), /* pcrel_offset */ 116 117 /* A 16 bit absolute relocation. */ 118 HOWTO (R_TILEGX_16, /* type */ 119 0, /* rightshift */ 120 1, /* size (0 = byte, 1 = short, 2 = long) */ 121 16, /* bitsize */ 122 FALSE, /* pc_relative */ 123 0, /* bitpos */ 124 complain_overflow_bitfield, /* complain_on_overflow */ 125 bfd_elf_generic_reloc, /* special_function */ 126 "R_TILEGX_16", /* name */ 127 FALSE, /* partial_inplace */ 128 0, /* src_mask */ 129 0xffff, /* dst_mask */ 130 FALSE), /* pcrel_offset */ 131 132 /* An 8 bit absolute relocation. */ 133 HOWTO (R_TILEGX_8, /* type */ 134 0, /* rightshift */ 135 0, /* size (0 = byte, 1 = short, 2 = long) */ 136 8, /* bitsize */ 137 FALSE, /* pc_relative */ 138 0, /* bitpos */ 139 complain_overflow_unsigned, /* complain_on_overflow */ 140 bfd_elf_generic_reloc, /* special_function */ 141 "R_TILEGX_8", /* name */ 142 FALSE, /* partial_inplace */ 143 0, /* src_mask */ 144 0xff, /* dst_mask */ 145 FALSE), /* pcrel_offset */ 146 #ifdef BFD64 147 /* A 64 bit pc-relative relocation. */ 148 HOWTO (R_TILEGX_64_PCREL,/* type */ 149 0, /* rightshift */ 150 4, /* size (0 = byte, 1 = short, 2 = long) */ 151 64, /* bitsize */ 152 TRUE, /* pc_relative */ 153 0, /* bitpos */ 154 complain_overflow_dont, /* complain_on_overflow */ 155 bfd_elf_generic_reloc, /* special_function */ 156 "R_TILEGX_32_PCREL", /* name */ 157 FALSE, /* partial_inplace */ 158 0, /* src_mask */ 159 0xffffffffffffffffULL, /* dst_mask */ 160 TRUE), /* pcrel_offset */ 161 #endif 162 /* A 32 bit pc-relative relocation. */ 163 HOWTO (R_TILEGX_32_PCREL,/* type */ 164 0, /* rightshift */ 165 2, /* size (0 = byte, 1 = short, 2 = long) */ 166 32, /* bitsize */ 167 TRUE, /* pc_relative */ 168 0, /* bitpos */ 169 complain_overflow_dont, /* complain_on_overflow */ 170 bfd_elf_generic_reloc, /* special_function */ 171 "R_TILEGX_32_PCREL", /* name */ 172 FALSE, /* partial_inplace */ 173 0, /* src_mask */ 174 0xffffffff, /* dst_mask */ 175 TRUE), /* pcrel_offset */ 176 177 /* A 16 bit pc-relative relocation. */ 178 HOWTO (R_TILEGX_16_PCREL,/* type */ 179 0, /* rightshift */ 180 1, /* size (0 = byte, 1 = short, 2 = long) */ 181 16, /* bitsize */ 182 TRUE, /* pc_relative */ 183 0, /* bitpos */ 184 complain_overflow_signed, /* complain_on_overflow */ 185 bfd_elf_generic_reloc, /* special_function */ 186 "R_TILEGX_16_PCREL", /* name */ 187 FALSE, /* partial_inplace */ 188 0, /* src_mask */ 189 0xffff, /* dst_mask */ 190 TRUE), /* pcrel_offset */ 191 192 /* An 8 bit pc-relative relocation. */ 193 HOWTO (R_TILEGX_8_PCREL, /* type */ 194 0, /* rightshift */ 195 0, /* size (0 = byte, 1 = short, 2 = long) */ 196 8, /* bitsize */ 197 TRUE, /* pc_relative */ 198 0, /* bitpos */ 199 complain_overflow_signed, /* complain_on_overflow */ 200 bfd_elf_generic_reloc, /* special_function */ 201 "R_TILEGX_8_PCREL",/* name */ 202 FALSE, /* partial_inplace */ 203 0, /* src_mask */ 204 0xff, /* dst_mask */ 205 TRUE), /* pcrel_offset */ 206 207 /* A 16 bit relocation without overflow. */ 208 HOWTO (R_TILEGX_HW0, /* type */ 209 0, /* rightshift */ 210 1, /* size (0 = byte, 1 = short, 2 = long) */ 211 16, /* bitsize */ 212 FALSE, /* pc_relative */ 213 0, /* bitpos */ 214 complain_overflow_dont,/* complain_on_overflow */ 215 bfd_elf_generic_reloc, /* special_function */ 216 "R_TILEGX_HW0", /* name */ 217 FALSE, /* partial_inplace */ 218 0, /* src_mask */ 219 0xffff, /* dst_mask */ 220 FALSE), /* pcrel_offset */ 221 222 /* A 16 bit relocation without overflow. */ 223 HOWTO (R_TILEGX_HW1, /* type */ 224 16, /* rightshift */ 225 1, /* size (0 = byte, 1 = short, 2 = long) */ 226 16, /* bitsize */ 227 FALSE, /* pc_relative */ 228 0, /* bitpos */ 229 complain_overflow_dont,/* complain_on_overflow */ 230 bfd_elf_generic_reloc, /* special_function */ 231 "R_TILEGX_HW1", /* name */ 232 FALSE, /* partial_inplace */ 233 0, /* src_mask */ 234 0xffff, /* dst_mask */ 235 FALSE), /* pcrel_offset */ 236 237 /* A 16 bit relocation without overflow. */ 238 HOWTO (R_TILEGX_HW2, /* type */ 239 32, /* rightshift */ 240 1, /* size (0 = byte, 1 = short, 2 = long) */ 241 16, /* bitsize */ 242 FALSE, /* pc_relative */ 243 0, /* bitpos */ 244 complain_overflow_dont,/* complain_on_overflow */ 245 bfd_elf_generic_reloc, /* special_function */ 246 "R_TILEGX_HW2", /* name */ 247 FALSE, /* partial_inplace */ 248 0, /* src_mask */ 249 0xffff, /* dst_mask */ 250 FALSE), /* pcrel_offset */ 251 252 /* A 16 bit relocation without overflow. */ 253 HOWTO (R_TILEGX_HW3, /* type */ 254 48, /* rightshift */ 255 1, /* size (0 = byte, 1 = short, 2 = long) */ 256 16, /* bitsize */ 257 FALSE, /* pc_relative */ 258 0, /* bitpos */ 259 complain_overflow_dont,/* complain_on_overflow */ 260 bfd_elf_generic_reloc, /* special_function */ 261 "R_TILEGX_HW3", /* name */ 262 FALSE, /* partial_inplace */ 263 0, /* src_mask */ 264 0xffff, /* dst_mask */ 265 FALSE), /* pcrel_offset */ 266 267 /* A 16 bit relocation with overflow. */ 268 HOWTO (R_TILEGX_HW0_LAST, /* type */ 269 0, /* rightshift */ 270 1, /* size (0 = byte, 1 = short, 2 = long) */ 271 16, /* bitsize */ 272 FALSE, /* pc_relative */ 273 0, /* bitpos */ 274 complain_overflow_signed,/* complain_on_overflow */ 275 bfd_elf_generic_reloc, /* special_function */ 276 "R_TILEGX_HW0_LAST", /* name */ 277 FALSE, /* partial_inplace */ 278 0, /* src_mask */ 279 0xffff, /* dst_mask */ 280 FALSE), /* pcrel_offset */ 281 282 /* A 16 bit relocation with overflow. */ 283 HOWTO (R_TILEGX_HW1_LAST, /* type */ 284 16, /* rightshift */ 285 1, /* size (0 = byte, 1 = short, 2 = long) */ 286 16, /* bitsize */ 287 FALSE, /* pc_relative */ 288 0, /* bitpos */ 289 complain_overflow_signed,/* complain_on_overflow */ 290 bfd_elf_generic_reloc, /* special_function */ 291 "R_TILEGX_HW1_LAST", /* name */ 292 FALSE, /* partial_inplace */ 293 0, /* src_mask */ 294 0xffff, /* dst_mask */ 295 FALSE), /* pcrel_offset */ 296 297 /* A 16 bit relocation with overflow. */ 298 HOWTO (R_TILEGX_HW2_LAST, /* type */ 299 32, /* rightshift */ 300 1, /* size (0 = byte, 1 = short, 2 = long) */ 301 16, /* bitsize */ 302 FALSE, /* pc_relative */ 303 0, /* bitpos */ 304 complain_overflow_signed,/* complain_on_overflow */ 305 bfd_elf_generic_reloc, /* special_function */ 306 "R_TILEGX_HW2_LAST", /* name */ 307 FALSE, /* partial_inplace */ 308 0, /* src_mask */ 309 0xffff, /* dst_mask */ 310 FALSE), /* pcrel_offset */ 311 312 HOWTO (R_TILEGX_COPY, /* type */ 313 0, /* rightshift */ 314 0, /* size (0 = byte, 1 = short, 2 = long) */ 315 0, /* bitsize */ 316 FALSE, /* pc_relative */ 317 0, /* bitpos */ 318 complain_overflow_dont, /* complain_on_overflow */ 319 bfd_elf_generic_reloc, /* special_function */ 320 "R_TILEGX_COPY", /* name */ 321 FALSE, /* partial_inplace */ 322 0, /* src_mask */ 323 0, /* dst_mask */ 324 TRUE), /* pcrel_offset */ 325 326 HOWTO (R_TILEGX_GLOB_DAT, /* type */ 327 0, /* rightshift */ 328 0, /* size (0 = byte, 1 = short, 2 = long) */ 329 0, /* bitsize */ 330 FALSE, /* pc_relative */ 331 0, /* bitpos */ 332 complain_overflow_dont, /* complain_on_overflow */ 333 bfd_elf_generic_reloc, /* special_function */ 334 "R_TILEGX_GLOB_DAT", /* name */ 335 FALSE, /* partial_inplace */ 336 0, /* src_mask */ 337 0, /* dst_mask */ 338 TRUE), /* pcrel_offset */ 339 340 HOWTO (R_TILEGX_JMP_SLOT, /* type */ 341 0, /* rightshift */ 342 0, /* size (0 = byte, 1 = short, 2 = long) */ 343 0, /* bitsize */ 344 FALSE, /* pc_relative */ 345 0, /* bitpos */ 346 complain_overflow_dont, /* complain_on_overflow */ 347 bfd_elf_generic_reloc, /* special_function */ 348 "R_TILEGX_JMP_SLOT", /* name */ 349 FALSE, /* partial_inplace */ 350 0, /* src_mask */ 351 0, /* dst_mask */ 352 TRUE), /* pcrel_offset */ 353 354 HOWTO (R_TILEGX_RELATIVE, /* type */ 355 0, /* rightshift */ 356 0, /* size (0 = byte, 1 = short, 2 = long) */ 357 0, /* bitsize */ 358 FALSE, /* pc_relative */ 359 0, /* bitpos */ 360 complain_overflow_dont, /* complain_on_overflow */ 361 bfd_elf_generic_reloc, /* special_function */ 362 "R_TILEGX_RELATIVE", /* name */ 363 FALSE, /* partial_inplace */ 364 0, /* src_mask */ 365 0, /* dst_mask */ 366 TRUE), /* pcrel_offset */ 367 368 HOWTO (R_TILEGX_BROFF_X1, /* type */ 369 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ 370 2, /* size (0 = byte, 1 = short, 2 = long) */ 371 17, /* bitsize */ 372 TRUE, /* pc_relative */ 373 0, /* bitpos */ 374 complain_overflow_signed, /* complain_on_overflow */ 375 bfd_elf_generic_reloc, /* special_function */ 376 "R_TILEGX_BROFF_X1", /* name */ 377 FALSE, /* partial_inplace */ 378 0, /* src_mask */ 379 -1, /* dst_mask */ 380 TRUE), /* pcrel_offset */ 381 382 HOWTO (R_TILEGX_JUMPOFF_X1, /* type */ 383 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ 384 2, /* size (0 = byte, 1 = short, 2 = long) */ 385 27, /* bitsize */ 386 TRUE, /* pc_relative */ 387 0, /* bitpos */ 388 complain_overflow_signed,/* complain_on_overflow */ 389 bfd_elf_generic_reloc, /* special_function */ 390 "R_TILEGX_JUMPOFF_X1", /* name */ 391 FALSE, /* partial_inplace */ 392 0, /* src_mask */ 393 -1, /* dst_mask */ 394 TRUE), /* pcrel_offset */ 395 396 HOWTO (R_TILEGX_JUMPOFF_X1_PLT, /* type */ 397 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ 398 2, /* size (0 = byte, 1 = short, 2 = long) */ 399 27, /* bitsize */ 400 TRUE, /* pc_relative */ 401 0, /* bitpos */ 402 complain_overflow_signed,/* complain_on_overflow */ 403 bfd_elf_generic_reloc, /* special_function */ 404 "R_TILEGX_JUMPOFF_X1_PLT", /* name */ 405 FALSE, /* partial_inplace */ 406 0, /* src_mask */ 407 -1, /* dst_mask */ 408 TRUE), /* pcrel_offset */ 409 410 #define TILEGX_IMM_HOWTO(name, size, bitsize) \ 411 HOWTO (name, 0, size, bitsize, FALSE, 0, \ 412 complain_overflow_signed, bfd_elf_generic_reloc, \ 413 #name, FALSE, 0, -1, FALSE) 414 415 #define TILEGX_UIMM_HOWTO(name, size, bitsize) \ 416 HOWTO (name, 0, size, bitsize, FALSE, 0, \ 417 complain_overflow_unsigned, bfd_elf_generic_reloc, \ 418 #name, FALSE, 0, -1, FALSE) 419 420 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0, 0, 8), 421 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0, 0, 8), 422 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1, 0, 8), 423 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1, 0, 8), 424 TILEGX_IMM_HOWTO(R_TILEGX_DEST_IMM8_X1, 0, 8), 425 426 TILEGX_UIMM_HOWTO(R_TILEGX_MT_IMM14_X1, 1, 14), 427 TILEGX_UIMM_HOWTO(R_TILEGX_MF_IMM14_X1, 1, 14), 428 429 TILEGX_UIMM_HOWTO(R_TILEGX_MMSTART_X0, 0, 6), 430 TILEGX_UIMM_HOWTO(R_TILEGX_MMEND_X0, 0, 6), 431 432 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_X0, 0, 6), 433 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_X1, 0, 6), 434 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_Y0, 0, 6), 435 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_Y1, 0, 6), 436 437 #define TILEGX_IMM16_HOWTO(name, rshift) \ 438 HOWTO (name, rshift, 1, 16, FALSE, 0, \ 439 complain_overflow_dont, bfd_elf_generic_reloc, \ 440 #name, FALSE, 0, 0xffff, FALSE) 441 442 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0, 0), 443 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0, 0), 444 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW1, 16), 445 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW1, 16), 446 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW2, 32), 447 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW2, 32), 448 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW3, 48), 449 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW3, 48), 450 451 #define TILEGX_IMM16_HOWTO_LAST(name, rshift) \ 452 HOWTO (name, rshift, 1, 16, FALSE, 0, \ 453 complain_overflow_signed, bfd_elf_generic_reloc, \ 454 #name, FALSE, 0, 0xffff, FALSE) 455 456 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST, 0), 457 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST, 0), 458 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST, 16), 459 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST, 16), 460 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW2_LAST, 32), 461 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW2_LAST, 32), 462 463 /* PC-relative offsets. */ 464 465 #define TILEGX_IMM16_HOWTO_PCREL(name, rshift) \ 466 HOWTO (name, rshift, 1, 16, TRUE, 0, \ 467 complain_overflow_dont, bfd_elf_generic_reloc, \ 468 #name, FALSE, 0, 0xffff, TRUE) 469 470 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW0_PCREL, 0), 471 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW0_PCREL, 0), 472 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW1_PCREL, 16), 473 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW1_PCREL, 16), 474 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW2_PCREL, 32), 475 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW2_PCREL, 32), 476 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW3_PCREL, 48), 477 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW3_PCREL, 48), 478 479 #define TILEGX_IMM16_HOWTO_LAST_PCREL(name, rshift) \ 480 HOWTO (name, rshift, 1, 16, TRUE, 0, \ 481 complain_overflow_signed, bfd_elf_generic_reloc, \ 482 #name, FALSE, 0, 0xffff, TRUE) 483 484 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW0_LAST_PCREL, 0), 485 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW0_LAST_PCREL, 0), 486 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW1_LAST_PCREL, 16), 487 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW1_LAST_PCREL, 16), 488 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW2_LAST_PCREL, 32), 489 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW2_LAST_PCREL, 32), 490 491 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_GOT, 0), 492 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_GOT, 0), 493 494 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW0_PLT_PCREL, 0), 495 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW0_PLT_PCREL, 0), 496 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW1_PLT_PCREL, 16), 497 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW1_PLT_PCREL, 16), 498 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW2_PLT_PCREL, 32), 499 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW2_PLT_PCREL, 32), 500 501 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_GOT, 0), 502 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_GOT, 0), 503 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_GOT, 16), 504 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_GOT, 16), 505 506 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW3_PLT_PCREL, 48), 507 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW3_PLT_PCREL, 48), 508 509 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_TLS_GD, 0), 510 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_TLS_GD, 0), 511 512 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_TLS_LE, 0), 513 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_TLS_LE, 0), 514 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE, 0), 515 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE, 0), 516 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE, 16), 517 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE, 16), 518 519 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD, 0), 520 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD, 0), 521 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD, 16), 522 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD, 16), 523 EMPTY_HOWTO (90), 524 EMPTY_HOWTO (91), 525 526 #define TILEGX_IMM16_HOWTO_TLS_IE(name, rshift) \ 527 HOWTO (name, rshift, 1, 16, FALSE, 0, \ 528 complain_overflow_dont, bfd_elf_generic_reloc, \ 529 #name, FALSE, 0, 0xffff, TRUE) 530 531 TILEGX_IMM16_HOWTO_TLS_IE (R_TILEGX_IMM16_X0_HW0_TLS_IE, 0), 532 TILEGX_IMM16_HOWTO_TLS_IE (R_TILEGX_IMM16_X1_HW0_TLS_IE, 0), 533 534 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL, 0), 535 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL, 0), 536 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL, 16), 537 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL, 16), 538 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL, 32), 539 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL, 32), 540 541 #define TILEGX_IMM16_HOWTO_LAST_TLS_IE(name, rshift) \ 542 HOWTO (name, rshift, 1, 16, FALSE, 0, \ 543 complain_overflow_signed, bfd_elf_generic_reloc, \ 544 #name, FALSE, 0, 0xffff, TRUE) 545 546 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE, 0), 547 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE, 0), 548 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE, 16), 549 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE, 16), 550 EMPTY_HOWTO (104), 551 EMPTY_HOWTO (105), 552 553 HOWTO(R_TILEGX_TLS_DTPMOD64, 0, 0, 0, FALSE, 0, complain_overflow_dont, 554 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPMOD64", 555 FALSE, 0, 0, TRUE), 556 HOWTO(R_TILEGX_TLS_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, 557 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPOFF64", 558 FALSE, 0, -1, TRUE), 559 HOWTO(R_TILEGX_TLS_TPOFF64, 0, 0, 0, FALSE, 0, complain_overflow_dont, 560 bfd_elf_generic_reloc, "R_TILEGX_TLS_TPOFF64", 561 FALSE, 0, 0, TRUE), 562 563 HOWTO(R_TILEGX_TLS_DTPMOD32, 0, 0, 0, FALSE, 0, complain_overflow_dont, 564 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPMOD32", 565 FALSE, 0, 0, TRUE), 566 HOWTO(R_TILEGX_TLS_DTPOFF32, 0, 4, 32, FALSE, 0, complain_overflow_bitfield, 567 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPOFF32", 568 FALSE, 0, -1, TRUE), 569 HOWTO(R_TILEGX_TLS_TPOFF32, 0, 0, 0, FALSE, 0, complain_overflow_dont, 570 bfd_elf_generic_reloc, "R_TILEGX_TLS_TPOFF32", 571 FALSE, 0, 0, TRUE), 572 573 HOWTO (R_TILEGX_TLS_GD_CALL, /* type */ 574 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ 575 2, /* size (0 = byte, 1 = short, 2 = long) */ 576 27, /* bitsize */ 577 TRUE, /* pc_relative */ 578 0, /* bitpos */ 579 complain_overflow_signed,/* complain_on_overflow */ 580 bfd_elf_generic_reloc, /* special_function */ 581 "R_TILEGX_TLS_GD_CALL", /* name */ 582 FALSE, /* partial_inplace */ 583 0, /* src_mask */ 584 -1, /* dst_mask */ 585 TRUE), /* pcrel_offset */ 586 587 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0_TLS_GD_ADD, 0, 8), 588 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_GD_ADD, 0, 8), 589 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_GD_ADD, 0, 8), 590 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_GD_ADD, 0, 8), 591 TILEGX_IMM_HOWTO(R_TILEGX_TLS_IE_LOAD, 0, 8), 592 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0_TLS_ADD, 0, 8), 593 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_ADD, 0, 8), 594 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_ADD, 0, 8), 595 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_ADD, 0, 8), 596 }; 597 598 static reloc_howto_type tilegx_elf_howto_table2 [] = 599 { 600 /* GNU extension to record C++ vtable hierarchy */ 601 HOWTO (R_TILEGX_GNU_VTINHERIT, /* type */ 602 0, /* rightshift */ 603 4, /* size (0 = byte, 1 = short, 2 = long) */ 604 0, /* bitsize */ 605 FALSE, /* pc_relative */ 606 0, /* bitpos */ 607 complain_overflow_dont, /* complain_on_overflow */ 608 NULL, /* special_function */ 609 "R_TILEGX_GNU_VTINHERIT", /* name */ 610 FALSE, /* partial_inplace */ 611 0, /* src_mask */ 612 0, /* dst_mask */ 613 FALSE), /* pcrel_offset */ 614 615 /* GNU extension to record C++ vtable member usage */ 616 HOWTO (R_TILEGX_GNU_VTENTRY, /* type */ 617 0, /* rightshift */ 618 4, /* size (0 = byte, 1 = short, 2 = long) */ 619 0, /* bitsize */ 620 FALSE, /* pc_relative */ 621 0, /* bitpos */ 622 complain_overflow_dont, /* complain_on_overflow */ 623 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 624 "R_TILEGX_GNU_VTENTRY", /* name */ 625 FALSE, /* partial_inplace */ 626 0, /* src_mask */ 627 0, /* dst_mask */ 628 FALSE), /* pcrel_offset */ 629 630 }; 631 632 /* Map BFD reloc types to TILEGX ELF reloc types. */ 633 634 typedef struct tilegx_reloc_map 635 { 636 bfd_reloc_code_real_type bfd_reloc_val; 637 unsigned int tilegx_reloc_val; 638 reloc_howto_type * table; 639 } reloc_map; 640 641 static const reloc_map tilegx_reloc_map [] = 642 { 643 #define TH_REMAP(bfd, tilegx) \ 644 { bfd, tilegx, tilegx_elf_howto_table }, 645 646 /* Standard relocations. */ 647 TH_REMAP (BFD_RELOC_NONE, R_TILEGX_NONE) 648 TH_REMAP (BFD_RELOC_64, R_TILEGX_64) 649 TH_REMAP (BFD_RELOC_32, R_TILEGX_32) 650 TH_REMAP (BFD_RELOC_16, R_TILEGX_16) 651 TH_REMAP (BFD_RELOC_8, R_TILEGX_8) 652 TH_REMAP (BFD_RELOC_64_PCREL, R_TILEGX_64_PCREL) 653 TH_REMAP (BFD_RELOC_32_PCREL, R_TILEGX_32_PCREL) 654 TH_REMAP (BFD_RELOC_16_PCREL, R_TILEGX_16_PCREL) 655 TH_REMAP (BFD_RELOC_8_PCREL, R_TILEGX_8_PCREL) 656 657 #define SIMPLE_REMAP(t) TH_REMAP (BFD_RELOC_##t, R_##t) 658 659 /* Custom relocations. */ 660 SIMPLE_REMAP (TILEGX_HW0) 661 SIMPLE_REMAP (TILEGX_HW1) 662 SIMPLE_REMAP (TILEGX_HW2) 663 SIMPLE_REMAP (TILEGX_HW3) 664 SIMPLE_REMAP (TILEGX_HW0_LAST) 665 SIMPLE_REMAP (TILEGX_HW1_LAST) 666 SIMPLE_REMAP (TILEGX_HW2_LAST) 667 SIMPLE_REMAP (TILEGX_COPY) 668 SIMPLE_REMAP (TILEGX_GLOB_DAT) 669 SIMPLE_REMAP (TILEGX_JMP_SLOT) 670 SIMPLE_REMAP (TILEGX_RELATIVE) 671 SIMPLE_REMAP (TILEGX_BROFF_X1) 672 SIMPLE_REMAP (TILEGX_JUMPOFF_X1) 673 SIMPLE_REMAP (TILEGX_JUMPOFF_X1_PLT) 674 SIMPLE_REMAP (TILEGX_IMM8_X0) 675 SIMPLE_REMAP (TILEGX_IMM8_Y0) 676 SIMPLE_REMAP (TILEGX_IMM8_X1) 677 SIMPLE_REMAP (TILEGX_IMM8_Y1) 678 SIMPLE_REMAP (TILEGX_DEST_IMM8_X1) 679 SIMPLE_REMAP (TILEGX_MT_IMM14_X1) 680 SIMPLE_REMAP (TILEGX_MF_IMM14_X1) 681 SIMPLE_REMAP (TILEGX_MMSTART_X0) 682 SIMPLE_REMAP (TILEGX_MMEND_X0) 683 SIMPLE_REMAP (TILEGX_SHAMT_X0) 684 SIMPLE_REMAP (TILEGX_SHAMT_X1) 685 SIMPLE_REMAP (TILEGX_SHAMT_Y0) 686 SIMPLE_REMAP (TILEGX_SHAMT_Y1) 687 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0) 688 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0) 689 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1) 690 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1) 691 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2) 692 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2) 693 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3) 694 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3) 695 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST) 696 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST) 697 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST) 698 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST) 699 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST) 700 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST) 701 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_PCREL) 702 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_PCREL) 703 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_PCREL) 704 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_PCREL) 705 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_PCREL) 706 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_PCREL) 707 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3_PCREL) 708 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3_PCREL) 709 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_PCREL) 710 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_PCREL) 711 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_PCREL) 712 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_PCREL) 713 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST_PCREL) 714 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST_PCREL) 715 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_GOT) 716 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_GOT) 717 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_PLT_PCREL) 718 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_PLT_PCREL) 719 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_PLT_PCREL) 720 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_PLT_PCREL) 721 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_PLT_PCREL) 722 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_PLT_PCREL) 723 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_GOT) 724 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_GOT) 725 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_GOT) 726 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_GOT) 727 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3_PLT_PCREL) 728 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3_PLT_PCREL) 729 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_GD) 730 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_GD) 731 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_LE) 732 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_LE) 733 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_LE) 734 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_LE) 735 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_LE) 736 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_LE) 737 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_GD) 738 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_GD) 739 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_GD) 740 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_GD) 741 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_IE) 742 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_IE) 743 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL) 744 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL) 745 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL) 746 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL) 747 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL) 748 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL) 749 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_IE) 750 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_IE) 751 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_IE) 752 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_IE) 753 754 SIMPLE_REMAP (TILEGX_TLS_DTPMOD64) 755 SIMPLE_REMAP (TILEGX_TLS_DTPOFF64) 756 SIMPLE_REMAP (TILEGX_TLS_TPOFF64) 757 758 SIMPLE_REMAP (TILEGX_TLS_DTPMOD32) 759 SIMPLE_REMAP (TILEGX_TLS_DTPOFF32) 760 SIMPLE_REMAP (TILEGX_TLS_TPOFF32) 761 762 SIMPLE_REMAP (TILEGX_TLS_GD_CALL) 763 SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_GD_ADD) 764 SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_GD_ADD) 765 SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_GD_ADD) 766 SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_GD_ADD) 767 SIMPLE_REMAP (TILEGX_TLS_IE_LOAD) 768 SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_ADD) 769 SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_ADD) 770 SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_ADD) 771 SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_ADD) 772 773 #undef SIMPLE_REMAP 774 #undef TH_REMAP 775 776 { BFD_RELOC_VTABLE_INHERIT, R_TILEGX_GNU_VTINHERIT, tilegx_elf_howto_table2 }, 777 { BFD_RELOC_VTABLE_ENTRY, R_TILEGX_GNU_VTENTRY, tilegx_elf_howto_table2 }, 778 }; 779 780 781 782 /* TILEGX ELF linker hash entry. */ 783 784 struct tilegx_elf_link_hash_entry 785 { 786 struct elf_link_hash_entry elf; 787 788 /* Track dynamic relocs copied for this symbol. */ 789 struct elf_dyn_relocs *dyn_relocs; 790 791 #define GOT_UNKNOWN 0 792 #define GOT_NORMAL 1 793 #define GOT_TLS_GD 2 794 #define GOT_TLS_IE 4 795 unsigned char tls_type; 796 }; 797 798 #define tilegx_elf_hash_entry(ent) \ 799 ((struct tilegx_elf_link_hash_entry *)(ent)) 800 801 struct _bfd_tilegx_elf_obj_tdata 802 { 803 struct elf_obj_tdata root; 804 805 /* tls_type for each local got entry. */ 806 char *local_got_tls_type; 807 }; 808 809 #define _bfd_tilegx_elf_tdata(abfd) \ 810 ((struct _bfd_tilegx_elf_obj_tdata *) (abfd)->tdata.any) 811 812 #define _bfd_tilegx_elf_local_got_tls_type(abfd) \ 813 (_bfd_tilegx_elf_tdata (abfd)->local_got_tls_type) 814 815 #define is_tilegx_elf(bfd) \ 816 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ 817 && elf_tdata (bfd) != NULL \ 818 && elf_object_id (bfd) == TILEGX_ELF_DATA) 819 820 #include "elf/common.h" 821 #include "elf/internal.h" 822 823 struct tilegx_elf_link_hash_table 824 { 825 struct elf_link_hash_table elf; 826 827 int bytes_per_word; 828 int word_align_power; 829 int bytes_per_rela; 830 int dtpmod_reloc; 831 int dtpoff_reloc; 832 int tpoff_reloc; 833 bfd_vma (*r_info) (Elf_Internal_Rela *, bfd_vma, bfd_vma); 834 bfd_vma (*r_symndx) (bfd_vma); 835 void (*put_word) (bfd *, bfd_vma, void *); 836 const char *dynamic_interpreter; 837 838 /* Whether LE transition has been disabled for some of the 839 sections. */ 840 bfd_boolean disable_le_transition; 841 842 /* Small local sym to section mapping cache. */ 843 struct sym_cache sym_cache; 844 }; 845 846 847 /* Get the Tile ELF linker hash table from a link_info structure. */ 848 #define tilegx_elf_hash_table(p) \ 849 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 850 == TILEGX_ELF_DATA ? ((struct tilegx_elf_link_hash_table *) ((p)->hash)) : NULL) 851 852 #ifdef BFD64 853 static bfd_vma 854 tilegx_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED, 855 bfd_vma rel_index, 856 bfd_vma type) 857 { 858 return ELF64_R_INFO (rel_index, type); 859 } 860 861 static bfd_vma 862 tilegx_elf_r_symndx_64 (bfd_vma r_info) 863 { 864 return ELF64_R_SYM (r_info); 865 } 866 867 static void 868 tilegx_put_word_64 (bfd *abfd, bfd_vma val, void *ptr) 869 { 870 bfd_put_64 (abfd, val, ptr); 871 } 872 #endif /* BFD64 */ 873 874 static bfd_vma 875 tilegx_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED, 876 bfd_vma rel_index, 877 bfd_vma type) 878 { 879 return ELF32_R_INFO (rel_index, type); 880 } 881 882 static bfd_vma 883 tilegx_elf_r_symndx_32 (bfd_vma r_info) 884 { 885 return ELF32_R_SYM (r_info); 886 } 887 888 static void 889 tilegx_put_word_32 (bfd *abfd, bfd_vma val, void *ptr) 890 { 891 bfd_put_32 (abfd, val, ptr); 892 } 893 894 reloc_howto_type * 895 tilegx_reloc_type_lookup (bfd * abfd, 896 bfd_reloc_code_real_type code) 897 { 898 unsigned int i; 899 900 for (i = ARRAY_SIZE (tilegx_reloc_map); i--;) 901 { 902 const reloc_map * entry; 903 904 entry = tilegx_reloc_map + i; 905 906 if (entry->bfd_reloc_val == code) 907 return entry->table + (entry->tilegx_reloc_val 908 - entry->table[0].type); 909 } 910 911 /* xgettext:c-format */ 912 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), 913 abfd, (int) code); 914 bfd_set_error (bfd_error_bad_value); 915 return NULL; 916 } 917 918 reloc_howto_type * 919 tilegx_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 920 const char *r_name) 921 { 922 unsigned int i; 923 924 for (i = 0; 925 i < (sizeof (tilegx_elf_howto_table) 926 / sizeof (tilegx_elf_howto_table[0])); 927 i++) 928 if (tilegx_elf_howto_table[i].name != NULL 929 && strcasecmp (tilegx_elf_howto_table[i].name, r_name) == 0) 930 return &tilegx_elf_howto_table[i]; 931 932 return NULL; 933 } 934 935 bfd_boolean 936 tilegx_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, 937 arelent *cache_ptr, 938 Elf_Internal_Rela *dst) 939 { 940 unsigned int r_type = TILEGX_ELF_R_TYPE (dst->r_info); 941 942 if (r_type <= (unsigned int) R_TILEGX_IMM8_Y1_TLS_ADD) 943 cache_ptr->howto = &tilegx_elf_howto_table [r_type]; 944 else if (r_type - R_TILEGX_GNU_VTINHERIT 945 <= ((unsigned int) R_TILEGX_GNU_VTENTRY 946 - (unsigned int) R_TILEGX_GNU_VTINHERIT)) 947 cache_ptr->howto 948 = &tilegx_elf_howto_table2 [r_type - R_TILEGX_GNU_VTINHERIT]; 949 else 950 { 951 /* xgettext:c-format */ 952 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), 953 abfd, r_type); 954 bfd_set_error (bfd_error_bad_value); 955 return FALSE; 956 } 957 return TRUE; 958 } 959 960 typedef tilegx_bundle_bits (*tilegx_create_func)(int); 961 962 static const tilegx_create_func reloc_to_create_func[] = 963 { 964 /* The first twenty relocation types don't correspond to operands */ 965 NULL, 966 NULL, 967 NULL, 968 NULL, 969 NULL, 970 NULL, 971 NULL, 972 NULL, 973 NULL, 974 NULL, 975 NULL, 976 NULL, 977 NULL, 978 NULL, 979 NULL, 980 NULL, 981 NULL, 982 NULL, 983 NULL, 984 NULL, 985 986 /* The remaining relocations are used for immediate operands */ 987 create_BrOff_X1, 988 create_JumpOff_X1, 989 create_JumpOff_X1, 990 create_Imm8_X0, 991 create_Imm8_Y0, 992 create_Imm8_X1, 993 create_Imm8_Y1, 994 create_Dest_Imm8_X1, 995 create_MT_Imm14_X1, 996 create_MF_Imm14_X1, 997 create_BFStart_X0, 998 create_BFEnd_X0, 999 create_ShAmt_X0, 1000 create_ShAmt_X1, 1001 create_ShAmt_Y0, 1002 create_ShAmt_Y1, 1003 create_Imm16_X0, 1004 create_Imm16_X1, 1005 create_Imm16_X0, 1006 create_Imm16_X1, 1007 create_Imm16_X0, 1008 create_Imm16_X1, 1009 create_Imm16_X0, 1010 create_Imm16_X1, 1011 create_Imm16_X0, 1012 create_Imm16_X1, 1013 create_Imm16_X0, 1014 create_Imm16_X1, 1015 create_Imm16_X0, 1016 create_Imm16_X1, 1017 create_Imm16_X0, 1018 create_Imm16_X1, 1019 create_Imm16_X0, 1020 create_Imm16_X1, 1021 create_Imm16_X0, 1022 create_Imm16_X1, 1023 create_Imm16_X0, 1024 create_Imm16_X1, 1025 create_Imm16_X0, 1026 create_Imm16_X1, 1027 create_Imm16_X0, 1028 create_Imm16_X1, 1029 create_Imm16_X0, 1030 create_Imm16_X1, 1031 create_Imm16_X0, 1032 create_Imm16_X1, 1033 create_Imm16_X0, 1034 create_Imm16_X1, 1035 create_Imm16_X0, 1036 create_Imm16_X1, 1037 create_Imm16_X0, 1038 create_Imm16_X1, 1039 create_Imm16_X0, 1040 create_Imm16_X1, 1041 create_Imm16_X0, 1042 create_Imm16_X1, 1043 create_Imm16_X0, 1044 create_Imm16_X1, 1045 create_Imm16_X0, 1046 create_Imm16_X1, 1047 create_Imm16_X0, 1048 create_Imm16_X1, 1049 create_Imm16_X0, 1050 create_Imm16_X1, 1051 create_Imm16_X0, 1052 create_Imm16_X1, 1053 create_Imm16_X0, 1054 create_Imm16_X1, 1055 create_Imm16_X0, 1056 create_Imm16_X1, 1057 NULL, 1058 NULL, 1059 create_Imm16_X0, 1060 create_Imm16_X1, 1061 create_Imm16_X0, 1062 create_Imm16_X1, 1063 create_Imm16_X0, 1064 create_Imm16_X1, 1065 create_Imm16_X0, 1066 create_Imm16_X1, 1067 create_Imm16_X0, 1068 create_Imm16_X1, 1069 create_Imm16_X0, 1070 create_Imm16_X1, 1071 }; 1072 1073 static void 1074 tilegx_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel) 1075 { 1076 const struct elf_backend_data *bed; 1077 bfd_byte *loc; 1078 1079 bed = get_elf_backend_data (abfd); 1080 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela); 1081 bed->s->swap_reloca_out (abfd, rel, loc); 1082 } 1083 1084 /* PLT/GOT stuff */ 1085 1086 /* The procedure linkage table starts with the following header: 1087 1088 ld_add r28, r27, 8 1089 ld r27, r27 1090 { 1091 jr r27 1092 info 10 ## SP not offset, return PC in LR 1093 } 1094 1095 Subsequent entries are the following, jumping to the header at the end: 1096 1097 { 1098 moveli r28, <_GLOBAL_OFFSET_TABLE_ - 1f + MY_GOT_OFFSET> 1099 lnk r26 1100 } 1101 1: 1102 { 1103 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b> 1104 shl16insli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET> 1105 } 1106 { 1107 add r28, r26, r28 1108 shl16insli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b> 1109 } 1110 { 1111 add r27, r26, r27 1112 ld r28, r28 1113 info 10 ## SP not offset, return PC in LR 1114 } 1115 { 1116 shl16insli r29, zero, MY_PLT_INDEX 1117 jr r28 1118 } 1119 1120 This code sequence lets the code at at the start of the PLT determine 1121 which PLT entry was executed by examining 'r29'. 1122 1123 Note that MY_PLT_INDEX skips over the header entries, so the first 1124 actual jump table entry has index zero. 1125 1126 If the offset fits in 16 bits, 1127 1128 lnk r26 1129 1: 1130 { 1131 addli r28, r26, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET> 1132 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b> 1133 } 1134 { 1135 shl16insli r29, zero, MY_PLT_INDEX 1136 ld r28, r28 1137 } 1138 { 1139 add r27, r26, r27 1140 jr r28 1141 } 1142 info 10 ## SP not offset, return PC in LR 1143 1144 For the purpose of backtracing, the procedure linkage table ends with the 1145 following tail entry: 1146 1147 info 10 ## SP not offset, return PC in LR 1148 1149 The 32-bit versions are similar, with ld4s replacing ld, and offsets into 1150 the GOT being multiples of 4 instead of 8. 1151 1152 */ 1153 1154 #define PLT_HEADER_SIZE_IN_BUNDLES 3 1155 #define PLT_ENTRY_SIZE_IN_BUNDLES 5 1156 #define PLT_TAIL_SIZE_IN_BUNDLES 1 1157 1158 #define PLT_HEADER_SIZE \ 1159 (PLT_HEADER_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES) 1160 #define PLT_ENTRY_SIZE \ 1161 (PLT_ENTRY_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES) 1162 #define PLT_TAIL_SIZE \ 1163 (PLT_TAIL_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES) 1164 1165 #define GOT_ENTRY_SIZE(htab) TILEGX_ELF_WORD_BYTES (htab) 1166 1167 #define GOTPLT_HEADER_SIZE(htab) (2 * GOT_ENTRY_SIZE (htab)) 1168 1169 static const bfd_byte 1170 tilegx64_plt0_entry[PLT_HEADER_SIZE] = 1171 { 1172 0x00, 0x30, 0x48, 0x51, 1173 0x6e, 0x43, 0xa0, 0x18, /* { ld_add r28, r27, 8 } */ 1174 0x00, 0x30, 0xbc, 0x35, 1175 0x00, 0x40, 0xde, 0x9e, /* { ld r27, r27 } */ 1176 0xff, 0xaf, 0x30, 0x40, 1177 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */ 1178 }; 1179 1180 static const bfd_byte 1181 tilegx64_long_plt_entry[PLT_ENTRY_SIZE] = 1182 { 1183 0xdc, 0x0f, 0x00, 0x10, 1184 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */ 1185 0xdb, 0x0f, 0x00, 0x10, 1186 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */ 1187 0x9c, 0xc6, 0x0d, 0xd0, 1188 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */ 1189 0x9b, 0xb6, 0xc5, 0xad, 1190 0xff, 0x57, 0xe0, 0x8e, /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */ 1191 0xdd, 0x0f, 0x00, 0x70, 1192 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */ 1193 }; 1194 1195 static const bfd_byte 1196 tilegx64_short_plt_entry[PLT_ENTRY_SIZE] = 1197 { 1198 0x00, 0x30, 0x48, 0x51, 1199 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */ 1200 0x9c, 0x06, 0x00, 0x90, 1201 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */ 1202 0xdd, 0x0f, 0x00, 0x70, 1203 0x8e, 0xeb, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld r28, r28 } */ 1204 0x9b, 0xb6, 0x0d, 0x50, 1205 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */ 1206 0x00, 0x30, 0x48, 0xd1, 1207 0xff, 0x57, 0x18, 0x18, /* { info 10 } */ 1208 }; 1209 1210 /* Reuse an existing info 10 bundle. */ 1211 static const bfd_byte *const tilegx64_plt_tail_entry = 1212 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES]; 1213 1214 static const bfd_byte 1215 tilegx32_plt0_entry[PLT_HEADER_SIZE] = 1216 { 1217 0x00, 0x30, 0x48, 0x51, 1218 0x6e, 0x23, 0x58, 0x18, /* { ld4s_add r28, r27, 4 } */ 1219 0x00, 0x30, 0xbc, 0x35, 1220 0x00, 0x40, 0xde, 0x9c, /* { ld4s r27, r27 } */ 1221 0xff, 0xaf, 0x30, 0x40, 1222 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */ 1223 }; 1224 1225 static const bfd_byte 1226 tilegx32_long_plt_entry[PLT_ENTRY_SIZE] = 1227 { 1228 0xdc, 0x0f, 0x00, 0x10, 1229 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */ 1230 0xdb, 0x0f, 0x00, 0x10, 1231 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */ 1232 0x9c, 0xc6, 0x0d, 0xd0, 1233 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */ 1234 0x9b, 0xb6, 0xc5, 0xad, 1235 0xff, 0x57, 0xe0, 0x8c, /* { add r27, r26, r27 ; info 10 ; ld4s r28, r28 } */ 1236 0xdd, 0x0f, 0x00, 0x70, 1237 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */ 1238 }; 1239 1240 static const bfd_byte 1241 tilegx32_short_plt_entry[PLT_ENTRY_SIZE] = 1242 { 1243 0x00, 0x30, 0x48, 0x51, 1244 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */ 1245 0x9c, 0x06, 0x00, 0x90, 1246 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */ 1247 0xdd, 0x0f, 0x00, 0x70, 1248 0x8e, 0x9b, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld4s r28, r28 } */ 1249 0x9b, 0xb6, 0x0d, 0x50, 1250 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */ 1251 0x00, 0x30, 0x48, 0xd1, 1252 0xff, 0x57, 0x18, 0x18, /* { info 10 } */ 1253 }; 1254 1255 /* Reuse an existing info 10 bundle. */ 1256 static const bfd_byte *const tilegx32_plt_tail_entry = 1257 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES]; 1258 1259 static int 1260 tilegx_plt_entry_build (bfd *output_bfd, 1261 struct tilegx_elf_link_hash_table *htab, 1262 asection *splt, asection *sgotplt, 1263 bfd_vma offset, bfd_vma *r_offset) 1264 { 1265 int plt_index = (offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; 1266 int got_offset = (plt_index * GOT_ENTRY_SIZE (htab) 1267 + GOTPLT_HEADER_SIZE (htab)); 1268 tilegx_bundle_bits *pc; 1269 1270 /* Compute the distance from the got entry to the lnk. */ 1271 bfd_signed_vma dist_got_entry = sgotplt->output_section->vma 1272 + sgotplt->output_offset 1273 + got_offset 1274 - splt->output_section->vma 1275 - splt->output_offset 1276 - offset 1277 - TILEGX_BUNDLE_SIZE_IN_BYTES; 1278 1279 /* Compute the distance to GOTPLT[0]. */ 1280 bfd_signed_vma dist_got0 = dist_got_entry - got_offset; 1281 1282 /* Check whether we can use the short plt entry with 16-bit offset. */ 1283 bfd_boolean short_plt_entry = 1284 (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000); 1285 1286 const tilegx_bundle_bits *plt_entry = (tilegx_bundle_bits *) 1287 (ABI_64_P (output_bfd) ? 1288 (short_plt_entry ? tilegx64_short_plt_entry : tilegx64_long_plt_entry) : 1289 (short_plt_entry ? tilegx32_short_plt_entry : tilegx32_long_plt_entry)); 1290 1291 /* Copy the plt entry template. */ 1292 memcpy (splt->contents + offset, plt_entry, PLT_ENTRY_SIZE); 1293 1294 /* Write the immediate offsets. */ 1295 pc = (tilegx_bundle_bits *)(splt->contents + offset); 1296 1297 if (short_plt_entry) 1298 { 1299 /* { lnk r28 } */ 1300 pc++; 1301 1302 /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; moveli r27, &GOTPLT[0] } */ 1303 *pc++ |= create_Imm16_X0 (dist_got_entry) 1304 | create_Imm16_X1 (dist_got0); 1305 1306 /* { shl16insli r29, zero, MY_PLT_INDEX ; ld r28, r28 } */ 1307 *pc++ |= create_Imm16_X0 (plt_index); 1308 } 1309 else 1310 { 1311 /* { moveli r28, &GOTPLT[MY_GOT_INDEX] ; lnk r26 } */ 1312 *pc++ |= create_Imm16_X0 (dist_got_entry >> 16); 1313 1314 /* { moveli r27, &GOTPLT[0] ; 1315 shl16insli r28, r28, &GOTPLT[MY_GOT_INDEX] } */ 1316 *pc++ |= create_Imm16_X0 (dist_got0 >> 16) 1317 | create_Imm16_X1 (dist_got_entry); 1318 1319 /* { add r28, r26, r28 ; shl16insli r27, r27, &GOTPLT[0] } */ 1320 *pc++ |= create_Imm16_X1 (dist_got0); 1321 1322 /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */ 1323 pc++; 1324 1325 /* { shl16insli r29, zero, MY_GOT_INDEX ; jr r28 } */ 1326 *pc++ |= create_Imm16_X0 (plt_index); 1327 } 1328 1329 /* Set the relocation offset. */ 1330 *r_offset = got_offset; 1331 1332 return plt_index; 1333 } 1334 1335 /* Create an entry in an TILEGX ELF linker hash table. */ 1336 1337 static struct bfd_hash_entry * 1338 link_hash_newfunc (struct bfd_hash_entry *entry, 1339 struct bfd_hash_table *table, const char *string) 1340 { 1341 /* Allocate the structure if it has not already been allocated by a 1342 subclass. */ 1343 if (entry == NULL) 1344 { 1345 entry = 1346 bfd_hash_allocate (table, 1347 sizeof (struct tilegx_elf_link_hash_entry)); 1348 if (entry == NULL) 1349 return entry; 1350 } 1351 1352 /* Call the allocation method of the superclass. */ 1353 entry = _bfd_elf_link_hash_newfunc (entry, table, string); 1354 if (entry != NULL) 1355 { 1356 struct tilegx_elf_link_hash_entry *eh; 1357 1358 eh = (struct tilegx_elf_link_hash_entry *) entry; 1359 eh->dyn_relocs = NULL; 1360 eh->tls_type = GOT_UNKNOWN; 1361 } 1362 1363 return entry; 1364 } 1365 1366 /* Create a TILEGX ELF linker hash table. */ 1367 1368 struct bfd_link_hash_table * 1369 tilegx_elf_link_hash_table_create (bfd *abfd) 1370 { 1371 struct tilegx_elf_link_hash_table *ret; 1372 bfd_size_type amt = sizeof (struct tilegx_elf_link_hash_table); 1373 1374 ret = (struct tilegx_elf_link_hash_table *) bfd_zmalloc (amt); 1375 if (ret == NULL) 1376 return NULL; 1377 1378 #ifdef BFD64 1379 if (ABI_64_P (abfd)) 1380 { 1381 ret->bytes_per_word = 8; 1382 ret->word_align_power = 3; 1383 ret->bytes_per_rela = sizeof (Elf64_External_Rela); 1384 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF64; 1385 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD64; 1386 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF64; 1387 ret->r_info = tilegx_elf_r_info_64; 1388 ret->r_symndx = tilegx_elf_r_symndx_64; 1389 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER; 1390 ret->put_word = tilegx_put_word_64; 1391 } 1392 else 1393 #endif 1394 { 1395 ret->bytes_per_word = 4; 1396 ret->word_align_power = 2; 1397 ret->bytes_per_rela = sizeof (Elf32_External_Rela); 1398 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF32; 1399 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD32; 1400 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF32; 1401 ret->r_info = tilegx_elf_r_info_32; 1402 ret->r_symndx = tilegx_elf_r_symndx_32; 1403 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER; 1404 ret->put_word = tilegx_put_word_32; 1405 } 1406 1407 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, 1408 sizeof (struct tilegx_elf_link_hash_entry), 1409 TILEGX_ELF_DATA)) 1410 { 1411 free (ret); 1412 return NULL; 1413 } 1414 1415 return &ret->elf.root; 1416 } 1417 1418 /* Create the .got section. */ 1419 1420 static bfd_boolean 1421 tilegx_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) 1422 { 1423 flagword flags; 1424 asection *s, *s_got; 1425 struct elf_link_hash_entry *h; 1426 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 1427 struct elf_link_hash_table *htab = elf_hash_table (info); 1428 1429 /* This function may be called more than once. */ 1430 if (htab->sgot != NULL) 1431 return TRUE; 1432 1433 flags = bed->dynamic_sec_flags; 1434 1435 s = bfd_make_section_anyway_with_flags (abfd, 1436 (bed->rela_plts_and_copies_p 1437 ? ".rela.got" : ".rel.got"), 1438 (bed->dynamic_sec_flags 1439 | SEC_READONLY)); 1440 if (s == NULL 1441 || !bfd_set_section_alignment (s, bed->s->log_file_align)) 1442 return FALSE; 1443 htab->srelgot = s; 1444 1445 s = s_got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); 1446 if (s == NULL 1447 || !bfd_set_section_alignment (s, bed->s->log_file_align)) 1448 return FALSE; 1449 htab->sgot = s; 1450 1451 /* The first bit of the global offset table is the header. */ 1452 s->size += bed->got_header_size; 1453 1454 if (bed->want_got_plt) 1455 { 1456 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); 1457 if (s == NULL 1458 || !bfd_set_section_alignment (s, bed->s->log_file_align)) 1459 return FALSE; 1460 htab->sgotplt = s; 1461 1462 /* Reserve room for the header. */ 1463 s->size += GOTPLT_HEADER_SIZE (tilegx_elf_hash_table (info)); 1464 } 1465 1466 if (bed->want_got_sym) 1467 { 1468 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got 1469 section. We don't do this in the linker script because we don't want 1470 to define the symbol if we are not creating a global offset 1471 table. */ 1472 h = _bfd_elf_define_linkage_sym (abfd, info, s_got, 1473 "_GLOBAL_OFFSET_TABLE_"); 1474 elf_hash_table (info)->hgot = h; 1475 if (h == NULL) 1476 return FALSE; 1477 } 1478 1479 return TRUE; 1480 } 1481 1482 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and 1483 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our 1484 hash table. */ 1485 1486 bfd_boolean 1487 tilegx_elf_create_dynamic_sections (bfd *dynobj, 1488 struct bfd_link_info *info) 1489 { 1490 if (!tilegx_elf_create_got_section (dynobj, info)) 1491 return FALSE; 1492 1493 return _bfd_elf_create_dynamic_sections (dynobj, info); 1494 } 1495 1496 /* Copy the extra info we tack onto an elf_link_hash_entry. */ 1497 1498 void 1499 tilegx_elf_copy_indirect_symbol (struct bfd_link_info *info, 1500 struct elf_link_hash_entry *dir, 1501 struct elf_link_hash_entry *ind) 1502 { 1503 struct tilegx_elf_link_hash_entry *edir, *eind; 1504 1505 edir = (struct tilegx_elf_link_hash_entry *) dir; 1506 eind = (struct tilegx_elf_link_hash_entry *) ind; 1507 1508 if (eind->dyn_relocs != NULL) 1509 { 1510 if (edir->dyn_relocs != NULL) 1511 { 1512 struct elf_dyn_relocs **pp; 1513 struct elf_dyn_relocs *p; 1514 1515 /* Add reloc counts against the indirect sym to the direct sym 1516 list. Merge any entries against the same section. */ 1517 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) 1518 { 1519 struct elf_dyn_relocs *q; 1520 1521 for (q = edir->dyn_relocs; q != NULL; q = q->next) 1522 if (q->sec == p->sec) 1523 { 1524 q->pc_count += p->pc_count; 1525 q->count += p->count; 1526 *pp = p->next; 1527 break; 1528 } 1529 if (q == NULL) 1530 pp = &p->next; 1531 } 1532 *pp = edir->dyn_relocs; 1533 } 1534 1535 edir->dyn_relocs = eind->dyn_relocs; 1536 eind->dyn_relocs = NULL; 1537 } 1538 1539 if (ind->root.type == bfd_link_hash_indirect 1540 && dir->got.refcount <= 0) 1541 { 1542 edir->tls_type = eind->tls_type; 1543 eind->tls_type = GOT_UNKNOWN; 1544 } 1545 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 1546 } 1547 1548 static int 1549 tilegx_tls_translate_to_le (int r_type) 1550 { 1551 switch (r_type) 1552 { 1553 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 1554 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 1555 return R_TILEGX_IMM16_X0_HW0_TLS_LE; 1556 1557 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 1558 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 1559 return R_TILEGX_IMM16_X1_HW0_TLS_LE; 1560 1561 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 1562 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 1563 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE; 1564 1565 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 1566 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 1567 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE; 1568 1569 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 1570 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 1571 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE; 1572 1573 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 1574 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 1575 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE; 1576 } 1577 return r_type; 1578 } 1579 1580 static int 1581 tilegx_tls_translate_to_ie (int r_type) 1582 { 1583 switch (r_type) 1584 { 1585 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 1586 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 1587 return R_TILEGX_IMM16_X0_HW0_TLS_IE; 1588 1589 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 1590 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 1591 return R_TILEGX_IMM16_X1_HW0_TLS_IE; 1592 1593 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 1594 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 1595 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE; 1596 1597 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 1598 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 1599 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE; 1600 1601 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 1602 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 1603 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE; 1604 1605 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 1606 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 1607 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE; 1608 } 1609 return r_type; 1610 } 1611 1612 static int 1613 tilegx_elf_tls_transition (struct bfd_link_info *info, int r_type, 1614 int is_local, bfd_boolean disable_le_transition) 1615 { 1616 if (!bfd_link_executable (info)) 1617 return r_type; 1618 1619 if (is_local && !disable_le_transition) 1620 return tilegx_tls_translate_to_le (r_type); 1621 else 1622 return tilegx_tls_translate_to_ie (r_type); 1623 } 1624 1625 /* Look through the relocs for a section during the first phase, and 1626 allocate space in the global offset table or procedure linkage 1627 table. */ 1628 1629 bfd_boolean 1630 tilegx_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, 1631 asection *sec, const Elf_Internal_Rela *relocs) 1632 { 1633 struct tilegx_elf_link_hash_table *htab; 1634 Elf_Internal_Shdr *symtab_hdr; 1635 struct elf_link_hash_entry **sym_hashes; 1636 const Elf_Internal_Rela *rel; 1637 const Elf_Internal_Rela *rel_end; 1638 asection *sreloc; 1639 int num_relocs; 1640 bfd_boolean has_tls_gd_or_ie = FALSE, has_tls_add = FALSE; 1641 1642 if (bfd_link_relocatable (info)) 1643 return TRUE; 1644 1645 htab = tilegx_elf_hash_table (info); 1646 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 1647 sym_hashes = elf_sym_hashes (abfd); 1648 1649 sreloc = NULL; 1650 1651 num_relocs = sec->reloc_count; 1652 1653 BFD_ASSERT (is_tilegx_elf (abfd) || num_relocs == 0); 1654 1655 if (htab->elf.dynobj == NULL) 1656 htab->elf.dynobj = abfd; 1657 1658 rel_end = relocs + num_relocs; 1659 1660 /* Check whether to do optimization to transform TLS GD/IE 1661 referehces to TLS LE. We disable it if we're linking with old 1662 TLS code sequences that do not support such optimization. Old 1663 TLS code sequences have tls_gd_call/tls_ie_load relocations but 1664 no tls_add relocations. */ 1665 for (rel = relocs; rel < rel_end && !has_tls_add; rel++) 1666 { 1667 int r_type = TILEGX_ELF_R_TYPE (rel->r_info); 1668 switch (r_type) 1669 { 1670 case R_TILEGX_TLS_GD_CALL: 1671 case R_TILEGX_TLS_IE_LOAD: 1672 has_tls_gd_or_ie = TRUE; 1673 break; 1674 case R_TILEGX_IMM8_X0_TLS_ADD: 1675 case R_TILEGX_IMM8_Y0_TLS_ADD: 1676 case R_TILEGX_IMM8_X1_TLS_ADD: 1677 case R_TILEGX_IMM8_Y1_TLS_ADD: 1678 has_tls_add = TRUE; 1679 break; 1680 } 1681 } 1682 1683 sec->sec_flg0 = (has_tls_gd_or_ie && !has_tls_add); 1684 htab->disable_le_transition |= sec->sec_flg0; 1685 1686 for (rel = relocs; rel < rel_end; rel++) 1687 { 1688 unsigned int r_type; 1689 unsigned int r_symndx; 1690 struct elf_link_hash_entry *h; 1691 int tls_type; 1692 1693 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info); 1694 r_type = TILEGX_ELF_R_TYPE (rel->r_info); 1695 1696 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) 1697 { 1698 /* xgettext:c-format */ 1699 _bfd_error_handler (_("%pB: bad symbol index: %d"), 1700 abfd, r_symndx); 1701 return FALSE; 1702 } 1703 1704 if (r_symndx < symtab_hdr->sh_info) 1705 h = NULL; 1706 else 1707 { 1708 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 1709 while (h->root.type == bfd_link_hash_indirect 1710 || h->root.type == bfd_link_hash_warning) 1711 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1712 } 1713 1714 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL, 1715 sec->sec_flg0); 1716 switch (r_type) 1717 { 1718 case R_TILEGX_IMM16_X0_HW0_TLS_LE: 1719 case R_TILEGX_IMM16_X1_HW0_TLS_LE: 1720 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE: 1721 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE: 1722 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE: 1723 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE: 1724 if (!bfd_link_executable (info)) 1725 goto r_tilegx_plt32; 1726 break; 1727 1728 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 1729 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 1730 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 1731 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 1732 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 1733 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 1734 BFD_ASSERT (bfd_link_pic (info)); 1735 tls_type = GOT_TLS_GD; 1736 goto have_got_reference; 1737 1738 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 1739 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 1740 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 1741 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 1742 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 1743 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 1744 tls_type = GOT_TLS_IE; 1745 if (!bfd_link_executable (info)) 1746 info->flags |= DF_STATIC_TLS; 1747 goto have_got_reference; 1748 1749 case R_TILEGX_IMM16_X0_HW0_GOT: 1750 case R_TILEGX_IMM16_X1_HW0_GOT: 1751 case R_TILEGX_IMM16_X0_HW0_LAST_GOT: 1752 case R_TILEGX_IMM16_X1_HW0_LAST_GOT: 1753 case R_TILEGX_IMM16_X0_HW1_LAST_GOT: 1754 case R_TILEGX_IMM16_X1_HW1_LAST_GOT: 1755 tls_type = GOT_NORMAL; 1756 /* Fall Through */ 1757 1758 have_got_reference: 1759 /* This symbol requires a global offset table entry. */ 1760 { 1761 int old_tls_type; 1762 1763 if (h != NULL) 1764 { 1765 h->got.refcount += 1; 1766 old_tls_type = tilegx_elf_hash_entry(h)->tls_type; 1767 } 1768 else 1769 { 1770 bfd_signed_vma *local_got_refcounts; 1771 1772 /* This is a global offset table entry for a local symbol. */ 1773 local_got_refcounts = elf_local_got_refcounts (abfd); 1774 if (local_got_refcounts == NULL) 1775 { 1776 bfd_size_type size; 1777 1778 size = symtab_hdr->sh_info; 1779 size *= (sizeof (bfd_signed_vma) + sizeof(char)); 1780 local_got_refcounts = ((bfd_signed_vma *) 1781 bfd_zalloc (abfd, size)); 1782 if (local_got_refcounts == NULL) 1783 return FALSE; 1784 elf_local_got_refcounts (abfd) = local_got_refcounts; 1785 _bfd_tilegx_elf_local_got_tls_type (abfd) 1786 = (char *) (local_got_refcounts + symtab_hdr->sh_info); 1787 } 1788 local_got_refcounts[r_symndx] += 1; 1789 old_tls_type = _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx]; 1790 } 1791 1792 /* If a TLS symbol is accessed using IE at least once, 1793 there is no point to use dynamic model for it. */ 1794 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN 1795 && (old_tls_type != GOT_TLS_GD 1796 || tls_type != GOT_TLS_IE)) 1797 { 1798 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD) 1799 tls_type = old_tls_type; 1800 else 1801 { 1802 _bfd_error_handler 1803 /* xgettext:c-format */ 1804 (_("%pB: `%s' accessed both as normal and thread local symbol"), 1805 abfd, h ? h->root.root.string : "<local>"); 1806 return FALSE; 1807 } 1808 } 1809 1810 if (old_tls_type != tls_type) 1811 { 1812 if (h != NULL) 1813 tilegx_elf_hash_entry (h)->tls_type = tls_type; 1814 else 1815 _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx] = tls_type; 1816 } 1817 } 1818 1819 if (htab->elf.sgot == NULL) 1820 { 1821 if (!tilegx_elf_create_got_section (htab->elf.dynobj, info)) 1822 return FALSE; 1823 } 1824 break; 1825 1826 case R_TILEGX_TLS_GD_CALL: 1827 if (!bfd_link_executable (info)) 1828 { 1829 /* These are basically R_TILEGX_JUMPOFF_X1_PLT relocs 1830 against __tls_get_addr. */ 1831 struct bfd_link_hash_entry *bh = NULL; 1832 if (! _bfd_generic_link_add_one_symbol (info, abfd, 1833 "__tls_get_addr", 0, 1834 bfd_und_section_ptr, 0, 1835 NULL, FALSE, FALSE, 1836 &bh)) 1837 return FALSE; 1838 h = (struct elf_link_hash_entry *) bh; 1839 } 1840 else 1841 break; 1842 /* Fall through */ 1843 1844 case R_TILEGX_JUMPOFF_X1_PLT: 1845 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL: 1846 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL: 1847 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL: 1848 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL: 1849 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL: 1850 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL: 1851 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL: 1852 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL: 1853 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL: 1854 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL: 1855 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL: 1856 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL: 1857 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL: 1858 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL: 1859 /* This symbol requires a procedure linkage table entry. We 1860 actually build the entry in adjust_dynamic_symbol, 1861 because this might be a case of linking PIC code without 1862 linking in any dynamic objects, in which case we don't 1863 need to generate a procedure linkage table after all. */ 1864 1865 if (h != NULL) 1866 { 1867 h->needs_plt = 1; 1868 h->plt.refcount += 1; 1869 } 1870 break; 1871 1872 case R_TILEGX_64_PCREL: 1873 case R_TILEGX_32_PCREL: 1874 case R_TILEGX_16_PCREL: 1875 case R_TILEGX_8_PCREL: 1876 case R_TILEGX_IMM16_X0_HW0_PCREL: 1877 case R_TILEGX_IMM16_X1_HW0_PCREL: 1878 case R_TILEGX_IMM16_X0_HW1_PCREL: 1879 case R_TILEGX_IMM16_X1_HW1_PCREL: 1880 case R_TILEGX_IMM16_X0_HW2_PCREL: 1881 case R_TILEGX_IMM16_X1_HW2_PCREL: 1882 case R_TILEGX_IMM16_X0_HW3_PCREL: 1883 case R_TILEGX_IMM16_X1_HW3_PCREL: 1884 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL: 1885 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL: 1886 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL: 1887 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL: 1888 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL: 1889 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL: 1890 if (h != NULL) 1891 h->non_got_ref = 1; 1892 1893 if (h != NULL 1894 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 1895 break; 1896 /* Fall through. */ 1897 1898 case R_TILEGX_64: 1899 case R_TILEGX_32: 1900 case R_TILEGX_16: 1901 case R_TILEGX_8: 1902 case R_TILEGX_HW0: 1903 case R_TILEGX_HW1: 1904 case R_TILEGX_HW2: 1905 case R_TILEGX_HW3: 1906 case R_TILEGX_HW0_LAST: 1907 case R_TILEGX_HW1_LAST: 1908 case R_TILEGX_HW2_LAST: 1909 case R_TILEGX_COPY: 1910 case R_TILEGX_GLOB_DAT: 1911 case R_TILEGX_JMP_SLOT: 1912 case R_TILEGX_RELATIVE: 1913 case R_TILEGX_BROFF_X1: 1914 case R_TILEGX_JUMPOFF_X1: 1915 case R_TILEGX_IMM8_X0: 1916 case R_TILEGX_IMM8_Y0: 1917 case R_TILEGX_IMM8_X1: 1918 case R_TILEGX_IMM8_Y1: 1919 case R_TILEGX_DEST_IMM8_X1: 1920 case R_TILEGX_MT_IMM14_X1: 1921 case R_TILEGX_MF_IMM14_X1: 1922 case R_TILEGX_MMSTART_X0: 1923 case R_TILEGX_MMEND_X0: 1924 case R_TILEGX_SHAMT_X0: 1925 case R_TILEGX_SHAMT_X1: 1926 case R_TILEGX_SHAMT_Y0: 1927 case R_TILEGX_SHAMT_Y1: 1928 case R_TILEGX_IMM16_X0_HW0: 1929 case R_TILEGX_IMM16_X1_HW0: 1930 case R_TILEGX_IMM16_X0_HW1: 1931 case R_TILEGX_IMM16_X1_HW1: 1932 case R_TILEGX_IMM16_X0_HW2: 1933 case R_TILEGX_IMM16_X1_HW2: 1934 case R_TILEGX_IMM16_X0_HW3: 1935 case R_TILEGX_IMM16_X1_HW3: 1936 case R_TILEGX_IMM16_X0_HW0_LAST: 1937 case R_TILEGX_IMM16_X1_HW0_LAST: 1938 case R_TILEGX_IMM16_X0_HW1_LAST: 1939 case R_TILEGX_IMM16_X1_HW1_LAST: 1940 case R_TILEGX_IMM16_X0_HW2_LAST: 1941 case R_TILEGX_IMM16_X1_HW2_LAST: 1942 if (h != NULL) 1943 h->non_got_ref = 1; 1944 1945 r_tilegx_plt32: 1946 if (h != NULL && !bfd_link_pic (info)) 1947 { 1948 /* We may need a .plt entry if the function this reloc 1949 refers to is in a shared lib. */ 1950 h->plt.refcount += 1; 1951 } 1952 1953 /* If we are creating a shared library, and this is a reloc 1954 against a global symbol, or a non PC relative reloc 1955 against a local symbol, then we need to copy the reloc 1956 into the shared library. However, if we are linking with 1957 -Bsymbolic, we do not need to copy a reloc against a 1958 global symbol which is defined in an object we are 1959 including in the link (i.e., DEF_REGULAR is set). At 1960 this point we have not seen all the input files, so it is 1961 possible that DEF_REGULAR is not set now but will be set 1962 later (it is never cleared). In case of a weak definition, 1963 DEF_REGULAR may be cleared later by a strong definition in 1964 a shared library. We account for that possibility below by 1965 storing information in the relocs_copied field of the hash 1966 table entry. A similar situation occurs when creating 1967 shared libraries and symbol visibility changes render the 1968 symbol local. 1969 1970 If on the other hand, we are creating an executable, we 1971 may need to keep relocations for symbols satisfied by a 1972 dynamic library if we manage to avoid copy relocs for the 1973 symbol. */ 1974 if ((bfd_link_pic (info) 1975 && (sec->flags & SEC_ALLOC) != 0 1976 && (! tilegx_elf_howto_table[r_type].pc_relative 1977 || (h != NULL 1978 && (! info->symbolic 1979 || h->root.type == bfd_link_hash_defweak 1980 || !h->def_regular)))) 1981 || (!bfd_link_pic (info) 1982 && (sec->flags & SEC_ALLOC) != 0 1983 && h != NULL 1984 && (h->root.type == bfd_link_hash_defweak 1985 || !h->def_regular))) 1986 { 1987 struct elf_dyn_relocs *p; 1988 struct elf_dyn_relocs **head; 1989 1990 /* When creating a shared object, we must copy these 1991 relocs into the output file. We create a reloc 1992 section in dynobj and make room for the reloc. */ 1993 if (sreloc == NULL) 1994 { 1995 sreloc = _bfd_elf_make_dynamic_reloc_section 1996 (sec, htab->elf.dynobj, htab->word_align_power, abfd, 1997 /*rela?*/ TRUE); 1998 1999 if (sreloc == NULL) 2000 return FALSE; 2001 } 2002 2003 /* If this is a global symbol, we count the number of 2004 relocations we need for this symbol. */ 2005 if (h != NULL) 2006 head = 2007 &((struct tilegx_elf_link_hash_entry *) h)->dyn_relocs; 2008 else 2009 { 2010 /* Track dynamic relocs needed for local syms too. 2011 We really need local syms available to do this 2012 easily. Oh well. */ 2013 2014 asection *s; 2015 void *vpp; 2016 Elf_Internal_Sym *isym; 2017 2018 isym = bfd_sym_from_r_symndx (&htab->sym_cache, 2019 abfd, r_symndx); 2020 if (isym == NULL) 2021 return FALSE; 2022 2023 s = bfd_section_from_elf_index (abfd, isym->st_shndx); 2024 if (s == NULL) 2025 s = sec; 2026 2027 vpp = &elf_section_data (s)->local_dynrel; 2028 head = (struct elf_dyn_relocs **) vpp; 2029 } 2030 2031 p = *head; 2032 if (p == NULL || p->sec != sec) 2033 { 2034 bfd_size_type amt = sizeof *p; 2035 p = ((struct elf_dyn_relocs *) 2036 bfd_alloc (htab->elf.dynobj, amt)); 2037 if (p == NULL) 2038 return FALSE; 2039 p->next = *head; 2040 *head = p; 2041 p->sec = sec; 2042 p->count = 0; 2043 p->pc_count = 0; 2044 } 2045 2046 p->count += 1; 2047 if (tilegx_elf_howto_table[r_type].pc_relative) 2048 p->pc_count += 1; 2049 } 2050 2051 break; 2052 2053 case R_TILEGX_GNU_VTINHERIT: 2054 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 2055 return FALSE; 2056 break; 2057 2058 case R_TILEGX_GNU_VTENTRY: 2059 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 2060 return FALSE; 2061 break; 2062 2063 default: 2064 break; 2065 } 2066 } 2067 2068 return TRUE; 2069 } 2070 2071 2072 asection * 2073 tilegx_elf_gc_mark_hook (asection *sec, 2074 struct bfd_link_info *info, 2075 Elf_Internal_Rela *rel, 2076 struct elf_link_hash_entry *h, 2077 Elf_Internal_Sym *sym) 2078 { 2079 if (h != NULL) 2080 { 2081 switch (TILEGX_ELF_R_TYPE (rel->r_info)) 2082 { 2083 case R_TILEGX_GNU_VTINHERIT: 2084 case R_TILEGX_GNU_VTENTRY: 2085 return NULL; 2086 } 2087 } 2088 2089 /* FIXME: The test here, in check_relocs and in relocate_section 2090 dealing with TLS optimization, ought to be !bfd_link_executable (info). */ 2091 if (bfd_link_pic (info)) 2092 { 2093 struct bfd_link_hash_entry *bh; 2094 2095 switch (TILEGX_ELF_R_TYPE (rel->r_info)) 2096 { 2097 case R_TILEGX_TLS_GD_CALL: 2098 /* This reloc implicitly references __tls_get_addr. We know 2099 another reloc will reference the same symbol as the one 2100 on this reloc, so the real symbol and section will be 2101 gc marked when processing the other reloc. That lets 2102 us handle __tls_get_addr here. */ 2103 bh = NULL; 2104 if (! _bfd_generic_link_add_one_symbol (info, sec->owner, 2105 "__tls_get_addr", 0, 2106 bfd_und_section_ptr, 2107 0, NULL, FALSE, 2108 FALSE, &bh)) 2109 return NULL; 2110 h = (struct elf_link_hash_entry *) bh; 2111 BFD_ASSERT (h != NULL); 2112 h->mark = 1; 2113 if (h->is_weakalias) 2114 weakdef (h)->mark = 1; 2115 sym = NULL; 2116 } 2117 } 2118 2119 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 2120 } 2121 2122 /* Find dynamic relocs for H that apply to read-only sections. */ 2123 2124 static asection * 2125 readonly_dynrelocs (struct elf_link_hash_entry *h) 2126 { 2127 struct elf_dyn_relocs *p; 2128 2129 for (p = tilegx_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) 2130 { 2131 asection *s = p->sec->output_section; 2132 2133 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2134 return p->sec; 2135 } 2136 return NULL; 2137 } 2138 2139 /* Adjust a symbol defined by a dynamic object and referenced by a 2140 regular object. The current definition is in some section of the 2141 dynamic object, but we're not including those sections. We have to 2142 change the definition to something the rest of the link can 2143 understand. */ 2144 2145 bfd_boolean 2146 tilegx_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 2147 struct elf_link_hash_entry *h) 2148 { 2149 struct tilegx_elf_link_hash_table *htab; 2150 bfd *dynobj; 2151 asection *s, *srel; 2152 2153 htab = tilegx_elf_hash_table (info); 2154 BFD_ASSERT (htab != NULL); 2155 2156 dynobj = htab->elf.dynobj; 2157 2158 /* Make sure we know what is going on here. */ 2159 BFD_ASSERT (dynobj != NULL 2160 && (h->needs_plt 2161 || h->is_weakalias 2162 || (h->def_dynamic 2163 && h->ref_regular 2164 && !h->def_regular))); 2165 2166 /* If this is a function, put it in the procedure linkage table. We 2167 will fill in the contents of the procedure linkage table later 2168 (although we could actually do it here). */ 2169 if (h->type == STT_FUNC || h->needs_plt) 2170 { 2171 if (h->plt.refcount <= 0 2172 || SYMBOL_CALLS_LOCAL (info, h) 2173 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT 2174 && h->root.type == bfd_link_hash_undefweak)) 2175 { 2176 /* This case can occur if we saw a R_TILEGX_JUMPOFF_X1_PLT 2177 reloc in an input file, but the symbol was never referred 2178 to by a dynamic object, or if all references were garbage 2179 collected. In such a case, we don't actually need to build 2180 a procedure linkage table, and we can just do a 2181 R_TILEGX_JUMPOFF_X1 relocation instead. */ 2182 h->plt.offset = (bfd_vma) -1; 2183 h->needs_plt = 0; 2184 } 2185 2186 return TRUE; 2187 } 2188 else 2189 h->plt.offset = (bfd_vma) -1; 2190 2191 /* If this is a weak symbol, and there is a real definition, the 2192 processor independent code will have arranged for us to see the 2193 real definition first, and we can just use the same value. */ 2194 if (h->is_weakalias) 2195 { 2196 struct elf_link_hash_entry *def = weakdef (h); 2197 BFD_ASSERT (def->root.type == bfd_link_hash_defined); 2198 h->root.u.def.section = def->root.u.def.section; 2199 h->root.u.def.value = def->root.u.def.value; 2200 return TRUE; 2201 } 2202 2203 /* This is a reference to a symbol defined by a dynamic object which 2204 is not a function. */ 2205 2206 /* If we are creating a shared library, we must presume that the 2207 only references to the symbol are via the global offset table. 2208 For such cases we need not do anything here; the relocations will 2209 be handled correctly by relocate_section. */ 2210 if (bfd_link_pic (info)) 2211 return TRUE; 2212 2213 /* If there are no references to this symbol that do not use the 2214 GOT, we don't need to generate a copy reloc. */ 2215 if (!h->non_got_ref) 2216 return TRUE; 2217 2218 /* If -z nocopyreloc was given, we won't generate them either. */ 2219 if (info->nocopyreloc) 2220 { 2221 h->non_got_ref = 0; 2222 return TRUE; 2223 } 2224 2225 /* If we don't find any dynamic relocs in read-only sections, then 2226 we'll be keeping the dynamic relocs and avoiding the copy reloc. */ 2227 if (!readonly_dynrelocs (h)) 2228 { 2229 h->non_got_ref = 0; 2230 return TRUE; 2231 } 2232 2233 /* We must allocate the symbol in our .dynbss section, which will 2234 become part of the .bss section of the executable. There will be 2235 an entry for this symbol in the .dynsym section. The dynamic 2236 object will contain position independent code, so all references 2237 from the dynamic object to this symbol will go through the global 2238 offset table. The dynamic linker will use the .dynsym entry to 2239 determine the address it must put in the global offset table, so 2240 both the dynamic object and the regular object will refer to the 2241 same memory location for the variable. */ 2242 2243 /* We must generate a R_TILEGX_COPY reloc to tell the dynamic linker 2244 to copy the initial value out of the dynamic object and into the 2245 runtime process image. We need to remember the offset into the 2246 .rel.bss section we are going to use. */ 2247 if ((h->root.u.def.section->flags & SEC_READONLY) != 0) 2248 { 2249 s = htab->elf.sdynrelro; 2250 srel = htab->elf.sreldynrelro; 2251 } 2252 else 2253 { 2254 s = htab->elf.sdynbss; 2255 srel = htab->elf.srelbss; 2256 } 2257 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) 2258 { 2259 srel->size += TILEGX_ELF_RELA_BYTES (htab); 2260 h->needs_copy = 1; 2261 } 2262 2263 return _bfd_elf_adjust_dynamic_copy (info, h, s); 2264 } 2265 2266 /* Allocate space in .plt, .got and associated reloc sections for 2267 dynamic relocs. */ 2268 2269 static bfd_boolean 2270 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) 2271 { 2272 struct bfd_link_info *info; 2273 struct tilegx_elf_link_hash_table *htab; 2274 struct tilegx_elf_link_hash_entry *eh; 2275 struct elf_dyn_relocs *p; 2276 2277 if (h->root.type == bfd_link_hash_indirect) 2278 return TRUE; 2279 2280 info = (struct bfd_link_info *) inf; 2281 htab = tilegx_elf_hash_table (info); 2282 BFD_ASSERT (htab != NULL); 2283 2284 if (htab->elf.dynamic_sections_created 2285 && h->plt.refcount > 0) 2286 { 2287 /* Make sure this symbol is output as a dynamic symbol. 2288 Undefined weak syms won't yet be marked as dynamic. */ 2289 if (h->dynindx == -1 2290 && !h->forced_local) 2291 { 2292 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2293 return FALSE; 2294 } 2295 2296 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) 2297 { 2298 asection *s = htab->elf.splt; 2299 2300 /* Allocate room for the header and tail. */ 2301 if (s->size == 0) 2302 { 2303 s->size = PLT_ENTRY_SIZE; 2304 } 2305 2306 h->plt.offset = s->size - PLT_ENTRY_SIZE + PLT_HEADER_SIZE; 2307 2308 /* If this symbol is not defined in a regular file, and we are 2309 not generating a shared library, then set the symbol to this 2310 location in the .plt. This is required to make function 2311 pointers compare as equal between the normal executable and 2312 the shared library. */ 2313 if (! bfd_link_pic (info) 2314 && !h->def_regular) 2315 { 2316 h->root.u.def.section = s; 2317 h->root.u.def.value = h->plt.offset; 2318 } 2319 2320 /* Make room for this entry. */ 2321 s->size += PLT_ENTRY_SIZE; 2322 2323 /* We also need to make an entry in the .got.plt section. */ 2324 htab->elf.sgotplt->size += GOT_ENTRY_SIZE (htab); 2325 2326 /* We also need to make an entry in the .rela.plt section. */ 2327 htab->elf.srelplt->size += TILEGX_ELF_RELA_BYTES (htab); 2328 } 2329 else 2330 { 2331 h->plt.offset = (bfd_vma) -1; 2332 h->needs_plt = 0; 2333 } 2334 } 2335 else 2336 { 2337 h->plt.offset = (bfd_vma) -1; 2338 h->needs_plt = 0; 2339 } 2340 2341 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE 2342 requiring no TLS entry. */ 2343 if (h->got.refcount > 0 2344 && !htab->disable_le_transition 2345 && bfd_link_executable (info) 2346 && h->dynindx == -1 2347 && tilegx_elf_hash_entry(h)->tls_type == GOT_TLS_IE) 2348 h->got.offset = (bfd_vma) -1; 2349 else if (h->got.refcount > 0) 2350 { 2351 asection *s; 2352 bfd_boolean dyn; 2353 int tls_type = tilegx_elf_hash_entry(h)->tls_type; 2354 2355 /* Make sure this symbol is output as a dynamic symbol. 2356 Undefined weak syms won't yet be marked as dynamic. */ 2357 if (h->dynindx == -1 2358 && !h->forced_local) 2359 { 2360 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2361 return FALSE; 2362 } 2363 2364 s = htab->elf.sgot; 2365 h->got.offset = s->size; 2366 s->size += TILEGX_ELF_WORD_BYTES (htab); 2367 /* TLS_GD entries need 2 consecutive GOT slots. */ 2368 if (tls_type == GOT_TLS_GD) 2369 s->size += TILEGX_ELF_WORD_BYTES (htab); 2370 dyn = htab->elf.dynamic_sections_created; 2371 /* TLS_IE needs one dynamic relocation, 2372 TLS_GD needs two if local symbol and two if global. */ 2373 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE) 2374 htab->elf.srelgot->size += 2 * TILEGX_ELF_RELA_BYTES (htab); 2375 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2376 bfd_link_pic (info), 2377 h)) 2378 htab->elf.srelgot->size += TILEGX_ELF_RELA_BYTES (htab); 2379 } 2380 else 2381 h->got.offset = (bfd_vma) -1; 2382 2383 eh = (struct tilegx_elf_link_hash_entry *) h; 2384 if (eh->dyn_relocs == NULL) 2385 return TRUE; 2386 2387 /* In the shared -Bsymbolic case, discard space allocated for 2388 dynamic pc-relative relocs against symbols which turn out to be 2389 defined in regular objects. For the normal shared case, discard 2390 space for pc-relative relocs that have become local due to symbol 2391 visibility changes. */ 2392 2393 if (bfd_link_pic (info)) 2394 { 2395 if (SYMBOL_CALLS_LOCAL (info, h)) 2396 { 2397 struct elf_dyn_relocs **pp; 2398 2399 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) 2400 { 2401 p->count -= p->pc_count; 2402 p->pc_count = 0; 2403 if (p->count == 0) 2404 *pp = p->next; 2405 else 2406 pp = &p->next; 2407 } 2408 } 2409 2410 /* Also discard relocs on undefined weak syms with non-default 2411 visibility. */ 2412 if (eh->dyn_relocs != NULL 2413 && h->root.type == bfd_link_hash_undefweak) 2414 { 2415 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT 2416 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) 2417 eh->dyn_relocs = NULL; 2418 2419 /* Make sure undefined weak symbols are output as a dynamic 2420 symbol in PIEs. */ 2421 else if (h->dynindx == -1 2422 && !h->forced_local) 2423 { 2424 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2425 return FALSE; 2426 } 2427 } 2428 } 2429 else 2430 { 2431 /* For the non-shared case, discard space for relocs against 2432 symbols which turn out to need copy relocs or are not 2433 dynamic. */ 2434 2435 if (!h->non_got_ref 2436 && ((h->def_dynamic 2437 && !h->def_regular) 2438 || (htab->elf.dynamic_sections_created 2439 && (h->root.type == bfd_link_hash_undefweak 2440 || h->root.type == bfd_link_hash_undefined)))) 2441 { 2442 /* Make sure this symbol is output as a dynamic symbol. 2443 Undefined weak syms won't yet be marked as dynamic. */ 2444 if (h->dynindx == -1 2445 && !h->forced_local) 2446 { 2447 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2448 return FALSE; 2449 } 2450 2451 /* If that succeeded, we know we'll be keeping all the 2452 relocs. */ 2453 if (h->dynindx != -1) 2454 goto keep; 2455 } 2456 2457 eh->dyn_relocs = NULL; 2458 2459 keep: ; 2460 } 2461 2462 /* Finally, allocate space. */ 2463 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2464 { 2465 asection *sreloc = elf_section_data (p->sec)->sreloc; 2466 sreloc->size += p->count * TILEGX_ELF_RELA_BYTES (htab); 2467 } 2468 2469 return TRUE; 2470 } 2471 2472 /* Set DF_TEXTREL if we find any dynamic relocs that apply to 2473 read-only sections. */ 2474 2475 static bfd_boolean 2476 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) 2477 { 2478 asection *sec; 2479 2480 if (h->root.type == bfd_link_hash_indirect) 2481 return TRUE; 2482 2483 sec = readonly_dynrelocs (h); 2484 if (sec != NULL) 2485 { 2486 struct bfd_link_info *info = (struct bfd_link_info *) info_p; 2487 2488 info->flags |= DF_TEXTREL; 2489 info->callbacks->minfo 2490 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), 2491 sec->owner, h->root.root.string, sec); 2492 2493 /* Not an error, just cut short the traversal. */ 2494 return FALSE; 2495 } 2496 return TRUE; 2497 } 2498 2499 /* Return true if the dynamic symbol for a given section should be 2500 omitted when creating a shared library. */ 2501 2502 bfd_boolean 2503 tilegx_elf_omit_section_dynsym (bfd *output_bfd, 2504 struct bfd_link_info *info, 2505 asection *p) 2506 { 2507 /* We keep the .got section symbol so that explicit relocations 2508 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode 2509 can be turned into relocations against the .got symbol. */ 2510 if (strcmp (p->name, ".got") == 0) 2511 return FALSE; 2512 2513 return _bfd_elf_omit_section_dynsym_default (output_bfd, info, p); 2514 } 2515 2516 bfd_boolean 2517 tilegx_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 2518 struct bfd_link_info *info) 2519 { 2520 struct tilegx_elf_link_hash_table *htab; 2521 bfd *dynobj; 2522 asection *s; 2523 bfd *ibfd; 2524 2525 htab = tilegx_elf_hash_table (info); 2526 BFD_ASSERT (htab != NULL); 2527 dynobj = htab->elf.dynobj; 2528 BFD_ASSERT (dynobj != NULL); 2529 2530 if (elf_hash_table (info)->dynamic_sections_created) 2531 { 2532 /* Set the contents of the .interp section to the interpreter. */ 2533 if (bfd_link_executable (info) && !info->nointerp) 2534 { 2535 s = bfd_get_linker_section (dynobj, ".interp"); 2536 BFD_ASSERT (s != NULL); 2537 s->size = strlen (htab->dynamic_interpreter) + 1; 2538 s->contents = (unsigned char *) htab->dynamic_interpreter; 2539 } 2540 } 2541 2542 /* Set up .got offsets for local syms, and space for local dynamic 2543 relocs. */ 2544 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) 2545 { 2546 bfd_signed_vma *local_got; 2547 bfd_signed_vma *end_local_got; 2548 char *local_tls_type; 2549 bfd_size_type locsymcount; 2550 Elf_Internal_Shdr *symtab_hdr; 2551 asection *srel; 2552 2553 if (! is_tilegx_elf (ibfd)) 2554 continue; 2555 2556 for (s = ibfd->sections; s != NULL; s = s->next) 2557 { 2558 struct elf_dyn_relocs *p; 2559 2560 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) 2561 { 2562 if (!bfd_is_abs_section (p->sec) 2563 && bfd_is_abs_section (p->sec->output_section)) 2564 { 2565 /* Input section has been discarded, either because 2566 it is a copy of a linkonce section or due to 2567 linker script /DISCARD/, so we'll be discarding 2568 the relocs too. */ 2569 } 2570 else if (p->count != 0) 2571 { 2572 srel = elf_section_data (p->sec)->sreloc; 2573 srel->size += p->count * TILEGX_ELF_RELA_BYTES (htab); 2574 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 2575 { 2576 info->flags |= DF_TEXTREL; 2577 2578 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"), 2579 p->sec->owner, p->sec); 2580 } 2581 } 2582 } 2583 } 2584 2585 local_got = elf_local_got_refcounts (ibfd); 2586 if (!local_got) 2587 continue; 2588 2589 symtab_hdr = &elf_symtab_hdr (ibfd); 2590 locsymcount = symtab_hdr->sh_info; 2591 end_local_got = local_got + locsymcount; 2592 local_tls_type = _bfd_tilegx_elf_local_got_tls_type (ibfd); 2593 s = htab->elf.sgot; 2594 srel = htab->elf.srelgot; 2595 for (; local_got < end_local_got; ++local_got, ++local_tls_type) 2596 { 2597 if (*local_got > 0) 2598 { 2599 *local_got = s->size; 2600 s->size += TILEGX_ELF_WORD_BYTES (htab); 2601 if (*local_tls_type == GOT_TLS_GD) 2602 s->size += TILEGX_ELF_WORD_BYTES (htab); 2603 if (bfd_link_pic (info) 2604 || *local_tls_type == GOT_TLS_GD 2605 || *local_tls_type == GOT_TLS_IE) 2606 srel->size += TILEGX_ELF_RELA_BYTES (htab); 2607 } 2608 else 2609 *local_got = (bfd_vma) -1; 2610 } 2611 } 2612 2613 /* Allocate global sym .plt and .got entries, and space for global 2614 sym dynamic relocs. */ 2615 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); 2616 2617 if (elf_hash_table (info)->dynamic_sections_created) 2618 { 2619 /* If the .got section is more than 0x8000 bytes, we add 2620 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16 2621 bit relocations have a greater chance of working. */ 2622 if (htab->elf.sgot->size >= 0x8000 2623 && elf_hash_table (info)->hgot->root.u.def.value == 0) 2624 elf_hash_table (info)->hgot->root.u.def.value = 0x8000; 2625 } 2626 2627 if (htab->elf.sgotplt) 2628 { 2629 struct elf_link_hash_entry *got; 2630 got = elf_link_hash_lookup (elf_hash_table (info), 2631 "_GLOBAL_OFFSET_TABLE_", 2632 FALSE, FALSE, FALSE); 2633 2634 /* Don't allocate .got.plt section if there are no GOT nor PLT 2635 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */ 2636 if ((got == NULL 2637 || !got->ref_regular_nonweak) 2638 && (htab->elf.sgotplt->size 2639 == (unsigned)GOTPLT_HEADER_SIZE (htab)) 2640 && (htab->elf.splt == NULL 2641 || htab->elf.splt->size == 0) 2642 && (htab->elf.sgot == NULL 2643 || (htab->elf.sgot->size 2644 == get_elf_backend_data (output_bfd)->got_header_size))) 2645 htab->elf.sgotplt->size = 0; 2646 } 2647 2648 /* The check_relocs and adjust_dynamic_symbol entry points have 2649 determined the sizes of the various dynamic sections. Allocate 2650 memory for them. */ 2651 for (s = dynobj->sections; s != NULL; s = s->next) 2652 { 2653 if ((s->flags & SEC_LINKER_CREATED) == 0) 2654 continue; 2655 2656 if (s == htab->elf.splt 2657 || s == htab->elf.sgot 2658 || s == htab->elf.sgotplt 2659 || s == htab->elf.sdynbss 2660 || s == htab->elf.sdynrelro) 2661 { 2662 /* Strip this section if we don't need it; see the 2663 comment below. */ 2664 } 2665 else if (strncmp (s->name, ".rela", 5) == 0) 2666 { 2667 if (s->size != 0) 2668 { 2669 /* We use the reloc_count field as a counter if we need 2670 to copy relocs into the output file. */ 2671 s->reloc_count = 0; 2672 } 2673 } 2674 else 2675 { 2676 /* It's not one of our sections. */ 2677 continue; 2678 } 2679 2680 if (s->size == 0) 2681 { 2682 /* If we don't need this section, strip it from the 2683 output file. This is mostly to handle .rela.bss and 2684 .rela.plt. We must create both sections in 2685 create_dynamic_sections, because they must be created 2686 before the linker maps input sections to output 2687 sections. The linker does that before 2688 adjust_dynamic_symbol is called, and it is that 2689 function which decides whether anything needs to go 2690 into these sections. */ 2691 s->flags |= SEC_EXCLUDE; 2692 continue; 2693 } 2694 2695 if ((s->flags & SEC_HAS_CONTENTS) == 0) 2696 continue; 2697 2698 /* Allocate memory for the section contents. Zero the memory 2699 for the benefit of .rela.plt, which has 4 unused entries 2700 at the beginning, and we don't want garbage. */ 2701 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); 2702 if (s->contents == NULL) 2703 return FALSE; 2704 } 2705 2706 if (elf_hash_table (info)->dynamic_sections_created) 2707 { 2708 /* Add some entries to the .dynamic section. We fill in the 2709 values later, in tilegx_elf_finish_dynamic_sections, but we 2710 must add the entries now so that we get the correct size for 2711 the .dynamic section. The DT_DEBUG entry is filled in by the 2712 dynamic linker and used by the debugger. */ 2713 #define add_dynamic_entry(TAG, VAL) \ 2714 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 2715 2716 if (bfd_link_executable (info)) 2717 { 2718 if (!add_dynamic_entry (DT_DEBUG, 0)) 2719 return FALSE; 2720 } 2721 2722 if (htab->elf.srelplt->size != 0) 2723 { 2724 if (!add_dynamic_entry (DT_PLTGOT, 0) 2725 || !add_dynamic_entry (DT_PLTRELSZ, 0) 2726 || !add_dynamic_entry (DT_PLTREL, DT_RELA) 2727 || !add_dynamic_entry (DT_JMPREL, 0)) 2728 return FALSE; 2729 } 2730 2731 if (!add_dynamic_entry (DT_RELA, 0) 2732 || !add_dynamic_entry (DT_RELASZ, 0) 2733 || !add_dynamic_entry (DT_RELAENT, TILEGX_ELF_RELA_BYTES (htab))) 2734 return FALSE; 2735 2736 /* If any dynamic relocs apply to a read-only section, 2737 then we need a DT_TEXTREL entry. */ 2738 if ((info->flags & DF_TEXTREL) == 0) 2739 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); 2740 2741 if (info->flags & DF_TEXTREL) 2742 { 2743 if (!add_dynamic_entry (DT_TEXTREL, 0)) 2744 return FALSE; 2745 } 2746 } 2747 #undef add_dynamic_entry 2748 2749 return TRUE; 2750 } 2751 2752 /* Return the base VMA address which should be subtracted from real addresses 2753 when resolving @dtpoff relocation. 2754 This is PT_TLS segment p_vaddr. */ 2755 2756 static bfd_vma 2757 dtpoff_base (struct bfd_link_info *info) 2758 { 2759 /* If tls_sec is NULL, we should have signalled an error already. */ 2760 if (elf_hash_table (info)->tls_sec == NULL) 2761 return 0; 2762 return elf_hash_table (info)->tls_sec->vma; 2763 } 2764 2765 /* Return the relocation value for @tpoff relocation. */ 2766 2767 static bfd_vma 2768 tpoff (struct bfd_link_info *info, bfd_vma address) 2769 { 2770 struct elf_link_hash_table *htab = elf_hash_table (info); 2771 2772 /* If tls_sec is NULL, we should have signalled an error already. */ 2773 if (htab->tls_sec == NULL) 2774 return 0; 2775 2776 return (address - htab->tls_sec->vma); 2777 } 2778 2779 /* Copy SIZE bits from FROM to TO at address ADDR. */ 2780 2781 static void 2782 tilegx_copy_bits (bfd_byte *addr, int from, int to, int size) 2783 { 2784 int i; 2785 for (i = 0; i < size; i++) 2786 { 2787 int from_byte = (from + i) / 8; 2788 int from_bit = (from + i) % 8; 2789 int to_byte = (to + i) / 8; 2790 int to_bit = (to + i) % 8; 2791 bfd_byte to_mask = 1 << to_bit; 2792 addr[to_byte] = (addr[to_byte] & ~to_mask) 2793 | ((addr[from_byte] >> from_bit << to_bit) & to_mask); 2794 } 2795 } 2796 2797 /* Replace the MASK bits in ADDR with those in INSN, for the next 2798 TILEGX_BUNDLE_SIZE_IN_BYTES bytes. */ 2799 2800 static void 2801 tilegx_replace_insn (bfd_byte *addr, const bfd_byte *mask, 2802 const bfd_byte *insn) 2803 { 2804 int i; 2805 for (i = 0; i < TILEGX_BUNDLE_SIZE_IN_BYTES; i++) 2806 { 2807 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]); 2808 } 2809 } 2810 2811 /* Mask to extract the bits corresponding to an instruction in a 2812 specific pipe of a bundle. */ 2813 static const bfd_byte insn_mask_X1[] = { 2814 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x3f 2815 }; 2816 2817 /* Mask to extract the bits corresponding to an instruction in a 2818 specific pipe of a bundle, minus the destination operand and the 2819 first source operand. */ 2820 static const bfd_byte insn_mask_X0_no_dest_no_srca[] = { 2821 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00 2822 }; 2823 2824 static const bfd_byte insn_mask_X1_no_dest_no_srca[] = { 2825 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x3f 2826 }; 2827 2828 static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = { 2829 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00 2830 }; 2831 static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = { 2832 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x3c 2833 }; 2834 2835 /* Mask to extract the bits corresponding to an instruction in a 2836 specific pipe of a bundle, minus the register operands. */ 2837 static const bfd_byte insn_mask_X0_no_operand[] = { 2838 0x00, 0x00, 0xfc, 0x7f, 0x00, 0x00, 0x00, 0x00 2839 }; 2840 2841 static const bfd_byte insn_mask_X1_no_operand[] = { 2842 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x3f 2843 }; 2844 2845 static const bfd_byte insn_mask_Y0_no_operand[] = { 2846 0x00, 0x00, 0x0c, 0x78, 0x00, 0x00, 0x00, 0x00 2847 }; 2848 2849 static const bfd_byte insn_mask_Y1_no_operand[] = { 2850 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x3c 2851 }; 2852 2853 /* Various instructions synthesized to support tls references. */ 2854 2855 /* ld r0, r0 in the X1 pipe, used for tls ie. */ 2856 static const bfd_byte insn_tls_ie_ld_X1[] = { 2857 0x00, 0x00, 0x00, 0x00, 0x00, 0xe8, 0x6a, 0x28 2858 }; 2859 2860 /* ld4s r0, r0 in the X1 pipe, used for tls ie. */ 2861 static const bfd_byte insn_tls_ie_ld4s_X1[] = { 2862 0x00, 0x00, 0x00, 0x00, 0x00, 0x98, 0x6a, 0x28 2863 }; 2864 2865 /* add r0, r0, tp in various pipes, used for tls ie. */ 2866 static const bfd_byte insn_tls_ie_add_X0X1[] = { 2867 0x00, 0x50, 0x0f, 0x50, 0x00, 0xa8, 0x07, 0x28 2868 }; 2869 static const bfd_byte insn_tls_ie_add_Y0Y1[] = { 2870 0x00, 0x50, 0x27, 0x2c, 0x00, 0xa8, 0x13, 0x9a 2871 }; 2872 2873 /* addx r0, r0, tp in various pipes, used for tls ie. */ 2874 static const bfd_byte insn_tls_ie_addx_X0X1[] = { 2875 0x00, 0x50, 0x0b, 0x50, 0x00, 0xa8, 0x05, 0x28 2876 }; 2877 static const bfd_byte insn_tls_ie_addx_Y0Y1[] = { 2878 0x00, 0x50, 0x03, 0x2c, 0x00, 0xa8, 0x01, 0x9a 2879 }; 2880 2881 /* move r0, r0 in various pipes, used for tls gd. */ 2882 static const bfd_byte insn_tls_gd_add_X0X1[] = { 2883 0x00, 0xf0, 0x07, 0x51, 0x00, 0xf8, 0x3b, 0x28 2884 }; 2885 static const bfd_byte insn_tls_gd_add_Y0Y1[] = { 2886 0x00, 0xf0, 0x0b, 0x54, 0x00, 0xf8, 0x05, 0xae 2887 }; 2888 2889 static const bfd_byte *insn_move_X0X1 = insn_tls_gd_add_X0X1; 2890 static const bfd_byte *insn_move_Y0Y1 = insn_tls_gd_add_Y0Y1; 2891 2892 static const bfd_byte *insn_add_X0X1 = insn_tls_ie_add_X0X1; 2893 static const bfd_byte *insn_add_Y0Y1 = insn_tls_ie_add_Y0Y1; 2894 2895 static const bfd_byte *insn_addx_X0X1 = insn_tls_ie_addx_X0X1; 2896 static const bfd_byte *insn_addx_Y0Y1 = insn_tls_ie_addx_Y0Y1; 2897 2898 /* Relocate an TILEGX ELF section. 2899 2900 The RELOCATE_SECTION function is called by the new ELF backend linker 2901 to handle the relocations for a section. 2902 2903 The relocs are always passed as Rela structures. 2904 2905 This function is responsible for adjusting the section contents as 2906 necessary, and (if generating a relocatable output file) adjusting 2907 the reloc addend as necessary. 2908 2909 This function does not have to worry about setting the reloc 2910 address or the reloc symbol index. 2911 2912 LOCAL_SYMS is a pointer to the swapped in local symbols. 2913 2914 LOCAL_SECTIONS is an array giving the section in the input file 2915 corresponding to the st_shndx field of each local symbol. 2916 2917 The global hash table entry for the global symbols can be found 2918 via elf_sym_hashes (input_bfd). 2919 2920 When generating relocatable output, this function must handle 2921 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 2922 going to be the section symbol corresponding to the output 2923 section, which means that the addend must be adjusted 2924 accordingly. */ 2925 2926 bfd_boolean 2927 tilegx_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, 2928 bfd *input_bfd, asection *input_section, 2929 bfd_byte *contents, Elf_Internal_Rela *relocs, 2930 Elf_Internal_Sym *local_syms, 2931 asection **local_sections) 2932 { 2933 struct tilegx_elf_link_hash_table *htab; 2934 Elf_Internal_Shdr *symtab_hdr; 2935 struct elf_link_hash_entry **sym_hashes; 2936 bfd_vma *local_got_offsets; 2937 bfd_vma got_base; 2938 asection *sreloc; 2939 Elf_Internal_Rela *rel; 2940 Elf_Internal_Rela *relend; 2941 int num_relocs; 2942 2943 htab = tilegx_elf_hash_table (info); 2944 BFD_ASSERT (htab != NULL); 2945 symtab_hdr = &elf_symtab_hdr (input_bfd); 2946 sym_hashes = elf_sym_hashes (input_bfd); 2947 local_got_offsets = elf_local_got_offsets (input_bfd); 2948 2949 if (elf_hash_table (info)->hgot == NULL) 2950 got_base = 0; 2951 else 2952 got_base = elf_hash_table (info)->hgot->root.u.def.value; 2953 2954 sreloc = elf_section_data (input_section)->sreloc; 2955 2956 rel = relocs; 2957 num_relocs = input_section->reloc_count; 2958 relend = relocs + num_relocs; 2959 for (; rel < relend; rel++) 2960 { 2961 int r_type, tls_type; 2962 bfd_boolean is_tls_iele, is_tls_le; 2963 reloc_howto_type *howto; 2964 unsigned long r_symndx; 2965 struct elf_link_hash_entry *h; 2966 Elf_Internal_Sym *sym; 2967 tilegx_create_func create_func; 2968 asection *sec; 2969 bfd_vma relocation; 2970 bfd_reloc_status_type r; 2971 const char *name; 2972 bfd_vma off; 2973 bfd_boolean is_plt = FALSE; 2974 bfd_boolean resolved_to_zero; 2975 bfd_boolean unresolved_reloc; 2976 2977 r_type = TILEGX_ELF_R_TYPE (rel->r_info); 2978 if (r_type == R_TILEGX_GNU_VTINHERIT 2979 || r_type == R_TILEGX_GNU_VTENTRY) 2980 continue; 2981 2982 if ((unsigned int)r_type >= ARRAY_SIZE (tilegx_elf_howto_table)) 2983 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type); 2984 2985 howto = tilegx_elf_howto_table + r_type; 2986 2987 /* This is a final link. */ 2988 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info); 2989 h = NULL; 2990 sym = NULL; 2991 sec = NULL; 2992 unresolved_reloc = FALSE; 2993 if (r_symndx < symtab_hdr->sh_info) 2994 { 2995 sym = local_syms + r_symndx; 2996 sec = local_sections[r_symndx]; 2997 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2998 } 2999 else 3000 { 3001 bfd_boolean warned ATTRIBUTE_UNUSED; 3002 bfd_boolean ignored ATTRIBUTE_UNUSED; 3003 3004 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 3005 r_symndx, symtab_hdr, sym_hashes, 3006 h, sec, relocation, 3007 unresolved_reloc, warned, ignored); 3008 if (warned) 3009 { 3010 /* To avoid generating warning messages about truncated 3011 relocations, set the relocation's address to be the same as 3012 the start of this section. */ 3013 if (input_section->output_section != NULL) 3014 relocation = input_section->output_section->vma; 3015 else 3016 relocation = 0; 3017 } 3018 } 3019 3020 if (sec != NULL && discarded_section (sec)) 3021 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 3022 rel, 1, relend, howto, 0, contents); 3023 3024 if (bfd_link_relocatable (info)) 3025 continue; 3026 3027 if (h != NULL) 3028 name = h->root.root.string; 3029 else 3030 { 3031 name = (bfd_elf_string_from_elf_section 3032 (input_bfd, symtab_hdr->sh_link, sym->st_name)); 3033 if (name == NULL || *name == '\0') 3034 name = bfd_section_name (sec); 3035 } 3036 3037 switch (r_type) 3038 { 3039 case R_TILEGX_TLS_GD_CALL: 3040 case R_TILEGX_IMM8_X0_TLS_GD_ADD: 3041 case R_TILEGX_IMM8_Y0_TLS_GD_ADD: 3042 case R_TILEGX_IMM8_X1_TLS_GD_ADD: 3043 case R_TILEGX_IMM8_Y1_TLS_GD_ADD: 3044 case R_TILEGX_IMM8_X0_TLS_ADD: 3045 case R_TILEGX_IMM8_Y0_TLS_ADD: 3046 case R_TILEGX_IMM8_X1_TLS_ADD: 3047 case R_TILEGX_IMM8_Y1_TLS_ADD: 3048 tls_type = GOT_UNKNOWN; 3049 if (h == NULL && local_got_offsets) 3050 tls_type = 3051 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx]; 3052 else if (h != NULL) 3053 tls_type = tilegx_elf_hash_entry(h)->tls_type; 3054 3055 is_tls_iele = (bfd_link_executable (info) || tls_type == GOT_TLS_IE); 3056 is_tls_le = is_tls_iele && (!input_section->sec_flg0 3057 && bfd_link_executable (info) 3058 && (h == NULL || h->dynindx == -1)); 3059 3060 if (r_type == R_TILEGX_TLS_GD_CALL) 3061 { 3062 if (is_tls_le) 3063 { 3064 /* GD -> LE */ 3065 tilegx_replace_insn (contents + rel->r_offset, 3066 insn_mask_X1, insn_move_X0X1); 3067 continue; 3068 } 3069 else if (is_tls_iele) 3070 { 3071 /* GD -> IE */ 3072 if (ABI_64_P (output_bfd)) 3073 tilegx_replace_insn (contents + rel->r_offset, 3074 insn_mask_X1, insn_tls_ie_ld_X1); 3075 else 3076 tilegx_replace_insn (contents + rel->r_offset, 3077 insn_mask_X1, insn_tls_ie_ld4s_X1); 3078 continue; 3079 } 3080 3081 /* GD -> GD */ 3082 h = (struct elf_link_hash_entry *) 3083 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE, 3084 FALSE, TRUE); 3085 BFD_ASSERT (h != NULL); 3086 r_type = R_TILEGX_JUMPOFF_X1_PLT; 3087 howto = tilegx_elf_howto_table + r_type; 3088 } 3089 else if (r_type == R_TILEGX_IMM8_X0_TLS_ADD 3090 || r_type == R_TILEGX_IMM8_X1_TLS_ADD 3091 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD 3092 || r_type == R_TILEGX_IMM8_Y1_TLS_ADD) 3093 { 3094 bfd_boolean is_pipe0 = 3095 (r_type == R_TILEGX_IMM8_X0_TLS_ADD 3096 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD); 3097 bfd_boolean is_X0X1 = 3098 (r_type == R_TILEGX_IMM8_X0_TLS_ADD 3099 || r_type == R_TILEGX_IMM8_X1_TLS_ADD); 3100 int dest_begin = is_pipe0 ? 0 : 31; 3101 int src_begin; 3102 const bfd_byte *insn; 3103 const bfd_byte *mask = NULL; 3104 3105 if (is_tls_le) 3106 { 3107 /* 1. copy dest operand into the first source operand. 3108 2. change the opcode to "move". */ 3109 src_begin = is_pipe0 ? 6 : 37; 3110 insn = is_X0X1 ? insn_move_X0X1 : insn_move_Y0Y1; 3111 3112 switch (r_type) 3113 { 3114 case R_TILEGX_IMM8_X0_TLS_ADD: 3115 mask = insn_mask_X0_no_dest_no_srca; 3116 break; 3117 case R_TILEGX_IMM8_X1_TLS_ADD: 3118 mask = insn_mask_X1_no_dest_no_srca; 3119 break; 3120 case R_TILEGX_IMM8_Y0_TLS_ADD: 3121 mask = insn_mask_Y0_no_dest_no_srca; 3122 break; 3123 case R_TILEGX_IMM8_Y1_TLS_ADD: 3124 mask = insn_mask_Y1_no_dest_no_srca; 3125 break; 3126 } 3127 } 3128 else 3129 { 3130 /* 1. copy dest operand into the second source operand. 3131 2. change the opcode to "add". */ 3132 src_begin = is_pipe0 ? 12 : 43; 3133 if (ABI_64_P (output_bfd)) 3134 insn = is_X0X1 ? insn_add_X0X1 : insn_add_Y0Y1; 3135 else 3136 insn = is_X0X1 ? insn_addx_X0X1 : insn_addx_Y0Y1; 3137 3138 switch (r_type) 3139 { 3140 case R_TILEGX_IMM8_X0_TLS_ADD: 3141 mask = insn_mask_X0_no_operand; 3142 break; 3143 case R_TILEGX_IMM8_X1_TLS_ADD: 3144 mask = insn_mask_X1_no_operand; 3145 break; 3146 case R_TILEGX_IMM8_Y0_TLS_ADD: 3147 mask = insn_mask_Y0_no_operand; 3148 break; 3149 case R_TILEGX_IMM8_Y1_TLS_ADD: 3150 mask = insn_mask_Y1_no_operand; 3151 break; 3152 } 3153 } 3154 3155 tilegx_copy_bits (contents + rel->r_offset, dest_begin, 3156 src_begin, 6); 3157 tilegx_replace_insn (contents + rel->r_offset, mask, insn); 3158 3159 continue; 3160 } 3161 else 3162 { 3163 const bfd_byte *mask = NULL; 3164 const bfd_byte *add_insn = NULL; 3165 bfd_boolean is_64bit = ABI_64_P (output_bfd); 3166 3167 switch (r_type) 3168 { 3169 case R_TILEGX_IMM8_X0_TLS_GD_ADD: 3170 add_insn = is_tls_iele 3171 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1) 3172 : insn_tls_gd_add_X0X1; 3173 mask = insn_mask_X0_no_dest_no_srca; 3174 break; 3175 case R_TILEGX_IMM8_X1_TLS_GD_ADD: 3176 add_insn = is_tls_iele 3177 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1) 3178 : insn_tls_gd_add_X0X1; 3179 mask = insn_mask_X1_no_dest_no_srca; 3180 break; 3181 case R_TILEGX_IMM8_Y0_TLS_GD_ADD: 3182 add_insn = is_tls_iele 3183 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1) 3184 : insn_tls_gd_add_Y0Y1; 3185 mask = insn_mask_Y0_no_dest_no_srca; 3186 break; 3187 case R_TILEGX_IMM8_Y1_TLS_GD_ADD: 3188 add_insn = is_tls_iele 3189 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1) 3190 : insn_tls_gd_add_Y0Y1; 3191 mask = insn_mask_Y1_no_dest_no_srca; 3192 break; 3193 } 3194 3195 tilegx_replace_insn (contents + rel->r_offset, mask, add_insn); 3196 3197 continue; 3198 } 3199 break; 3200 case R_TILEGX_TLS_IE_LOAD: 3201 if (!input_section->sec_flg0 3202 && bfd_link_executable (info) 3203 && (h == NULL || h->dynindx == -1)) 3204 { 3205 /* IE -> LE */ 3206 tilegx_replace_insn (contents + rel->r_offset, 3207 insn_mask_X1_no_dest_no_srca, 3208 insn_move_X0X1); 3209 } 3210 else 3211 { 3212 /* IE -> IE */ 3213 if (ABI_64_P (output_bfd)) 3214 tilegx_replace_insn (contents + rel->r_offset, 3215 insn_mask_X1_no_dest_no_srca, 3216 insn_tls_ie_ld_X1); 3217 else 3218 tilegx_replace_insn (contents + rel->r_offset, 3219 insn_mask_X1_no_dest_no_srca, 3220 insn_tls_ie_ld4s_X1); 3221 } 3222 continue; 3223 break; 3224 default: 3225 break; 3226 } 3227 3228 resolved_to_zero = (h != NULL 3229 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); 3230 3231 switch (r_type) 3232 { 3233 case R_TILEGX_IMM16_X0_HW0_GOT: 3234 case R_TILEGX_IMM16_X1_HW0_GOT: 3235 case R_TILEGX_IMM16_X0_HW0_LAST_GOT: 3236 case R_TILEGX_IMM16_X1_HW0_LAST_GOT: 3237 case R_TILEGX_IMM16_X0_HW1_LAST_GOT: 3238 case R_TILEGX_IMM16_X1_HW1_LAST_GOT: 3239 /* Relocation is to the entry for this symbol in the global 3240 offset table. */ 3241 if (htab->elf.sgot == NULL) 3242 abort (); 3243 3244 if (h != NULL) 3245 { 3246 bfd_boolean dyn; 3247 3248 off = h->got.offset; 3249 BFD_ASSERT (off != (bfd_vma) -1); 3250 dyn = elf_hash_table (info)->dynamic_sections_created; 3251 3252 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 3253 bfd_link_pic (info), 3254 h) 3255 || (bfd_link_pic (info) 3256 && SYMBOL_REFERENCES_LOCAL (info, h))) 3257 { 3258 /* This is actually a static link, or it is a 3259 -Bsymbolic link and the symbol is defined 3260 locally, or the symbol was forced to be local 3261 because of a version file. We must initialize 3262 this entry in the global offset table. Since the 3263 offset must always be a multiple 3264 of 8 for 64-bit, we use the least significant bit 3265 to record whether we have initialized it already. 3266 3267 When doing a dynamic link, we create a .rela.got 3268 relocation entry to initialize the value. This 3269 is done in the finish_dynamic_symbol routine. */ 3270 if ((off & 1) != 0) 3271 off &= ~1; 3272 else 3273 { 3274 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation, 3275 htab->elf.sgot->contents + off); 3276 h->got.offset |= 1; 3277 } 3278 } 3279 else 3280 unresolved_reloc = FALSE; 3281 } 3282 else 3283 { 3284 BFD_ASSERT (local_got_offsets != NULL 3285 && local_got_offsets[r_symndx] != (bfd_vma) -1); 3286 3287 off = local_got_offsets[r_symndx]; 3288 3289 /* The offset must always be a multiple of 8 on 64-bit. 3290 We use the least significant bit to record 3291 whether we have already processed this entry. */ 3292 if ((off & 1) != 0) 3293 off &= ~1; 3294 else 3295 { 3296 if (bfd_link_pic (info)) 3297 { 3298 asection *s; 3299 Elf_Internal_Rela outrel; 3300 3301 /* We need to generate a R_TILEGX_RELATIVE reloc 3302 for the dynamic linker. */ 3303 s = htab->elf.srelgot; 3304 BFD_ASSERT (s != NULL); 3305 3306 outrel.r_offset = (htab->elf.sgot->output_section->vma 3307 + htab->elf.sgot->output_offset 3308 + off); 3309 outrel.r_info = 3310 TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE); 3311 outrel.r_addend = relocation; 3312 relocation = 0; 3313 tilegx_elf_append_rela (output_bfd, s, &outrel); 3314 } 3315 3316 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation, 3317 htab->elf.sgot->contents + off); 3318 local_got_offsets[r_symndx] |= 1; 3319 } 3320 } 3321 relocation = off - got_base; 3322 break; 3323 3324 case R_TILEGX_JUMPOFF_X1_PLT: 3325 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL: 3326 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL: 3327 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL: 3328 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL: 3329 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL: 3330 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL: 3331 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL: 3332 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL: 3333 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL: 3334 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL: 3335 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL: 3336 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL: 3337 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL: 3338 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL: 3339 /* Relocation is to the entry for this symbol in the 3340 procedure linkage table. */ 3341 BFD_ASSERT (h != NULL); 3342 3343 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL) 3344 { 3345 /* We didn't make a PLT entry for this symbol. This 3346 happens when statically linking PIC code, or when 3347 using -Bsymbolic. */ 3348 break; 3349 } 3350 3351 relocation = (htab->elf.splt->output_section->vma 3352 + htab->elf.splt->output_offset 3353 + h->plt.offset); 3354 unresolved_reloc = FALSE; 3355 break; 3356 3357 case R_TILEGX_64_PCREL: 3358 case R_TILEGX_32_PCREL: 3359 case R_TILEGX_16_PCREL: 3360 case R_TILEGX_8_PCREL: 3361 case R_TILEGX_IMM16_X0_HW0_PCREL: 3362 case R_TILEGX_IMM16_X1_HW0_PCREL: 3363 case R_TILEGX_IMM16_X0_HW1_PCREL: 3364 case R_TILEGX_IMM16_X1_HW1_PCREL: 3365 case R_TILEGX_IMM16_X0_HW2_PCREL: 3366 case R_TILEGX_IMM16_X1_HW2_PCREL: 3367 case R_TILEGX_IMM16_X0_HW3_PCREL: 3368 case R_TILEGX_IMM16_X1_HW3_PCREL: 3369 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL: 3370 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL: 3371 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL: 3372 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL: 3373 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL: 3374 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL: 3375 if (h != NULL 3376 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 3377 break; 3378 /* Fall through. */ 3379 case R_TILEGX_64: 3380 case R_TILEGX_32: 3381 case R_TILEGX_16: 3382 case R_TILEGX_8: 3383 case R_TILEGX_HW0: 3384 case R_TILEGX_HW1: 3385 case R_TILEGX_HW2: 3386 case R_TILEGX_HW3: 3387 case R_TILEGX_HW0_LAST: 3388 case R_TILEGX_HW1_LAST: 3389 case R_TILEGX_HW2_LAST: 3390 case R_TILEGX_COPY: 3391 case R_TILEGX_GLOB_DAT: 3392 case R_TILEGX_JMP_SLOT: 3393 case R_TILEGX_RELATIVE: 3394 case R_TILEGX_BROFF_X1: 3395 case R_TILEGX_JUMPOFF_X1: 3396 case R_TILEGX_IMM8_X0: 3397 case R_TILEGX_IMM8_Y0: 3398 case R_TILEGX_IMM8_X1: 3399 case R_TILEGX_IMM8_Y1: 3400 case R_TILEGX_DEST_IMM8_X1: 3401 case R_TILEGX_MT_IMM14_X1: 3402 case R_TILEGX_MF_IMM14_X1: 3403 case R_TILEGX_MMSTART_X0: 3404 case R_TILEGX_MMEND_X0: 3405 case R_TILEGX_SHAMT_X0: 3406 case R_TILEGX_SHAMT_X1: 3407 case R_TILEGX_SHAMT_Y0: 3408 case R_TILEGX_SHAMT_Y1: 3409 case R_TILEGX_IMM16_X0_HW0: 3410 case R_TILEGX_IMM16_X1_HW0: 3411 case R_TILEGX_IMM16_X0_HW1: 3412 case R_TILEGX_IMM16_X1_HW1: 3413 case R_TILEGX_IMM16_X0_HW2: 3414 case R_TILEGX_IMM16_X1_HW2: 3415 case R_TILEGX_IMM16_X0_HW3: 3416 case R_TILEGX_IMM16_X1_HW3: 3417 case R_TILEGX_IMM16_X0_HW0_LAST: 3418 case R_TILEGX_IMM16_X1_HW0_LAST: 3419 case R_TILEGX_IMM16_X0_HW1_LAST: 3420 case R_TILEGX_IMM16_X1_HW1_LAST: 3421 case R_TILEGX_IMM16_X0_HW2_LAST: 3422 case R_TILEGX_IMM16_X1_HW2_LAST: 3423 if ((input_section->flags & SEC_ALLOC) == 0) 3424 break; 3425 3426 if ((bfd_link_pic (info) 3427 && (h == NULL 3428 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 3429 && !resolved_to_zero) 3430 || h->root.type != bfd_link_hash_undefweak) 3431 && (! howto->pc_relative 3432 || !SYMBOL_CALLS_LOCAL (info, h))) 3433 || (!bfd_link_pic (info) 3434 && h != NULL 3435 && h->dynindx != -1 3436 && !h->non_got_ref 3437 && ((h->def_dynamic 3438 && !h->def_regular) 3439 || h->root.type == bfd_link_hash_undefweak 3440 || h->root.type == bfd_link_hash_undefined))) 3441 { 3442 Elf_Internal_Rela outrel; 3443 bfd_boolean skip, relocate = FALSE; 3444 3445 /* When generating a shared object, these relocations 3446 are copied into the output file to be resolved at run 3447 time. */ 3448 3449 BFD_ASSERT (sreloc != NULL); 3450 3451 skip = FALSE; 3452 3453 outrel.r_offset = 3454 _bfd_elf_section_offset (output_bfd, info, input_section, 3455 rel->r_offset); 3456 if (outrel.r_offset == (bfd_vma) -1) 3457 skip = TRUE; 3458 else if (outrel.r_offset == (bfd_vma) -2) 3459 skip = TRUE, relocate = TRUE; 3460 outrel.r_offset += (input_section->output_section->vma 3461 + input_section->output_offset); 3462 3463 switch (r_type) 3464 { 3465 case R_TILEGX_64_PCREL: 3466 case R_TILEGX_32_PCREL: 3467 case R_TILEGX_16_PCREL: 3468 case R_TILEGX_8_PCREL: 3469 /* If the symbol is not dynamic, we should not keep 3470 a dynamic relocation. But an .rela.* slot has been 3471 allocated for it, output R_TILEGX_NONE. 3472 FIXME: Add code tracking needed dynamic relocs as 3473 e.g. i386 has. */ 3474 if (h->dynindx == -1) 3475 skip = TRUE, relocate = TRUE; 3476 break; 3477 } 3478 3479 if (skip) 3480 memset (&outrel, 0, sizeof outrel); 3481 /* h->dynindx may be -1 if the symbol was marked to 3482 become local. */ 3483 else if (h != NULL && 3484 h->dynindx != -1 3485 && (! is_plt 3486 || !bfd_link_pic (info) 3487 || !SYMBOLIC_BIND (info, h) 3488 || !h->def_regular)) 3489 { 3490 BFD_ASSERT (h->dynindx != -1); 3491 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, h->dynindx, r_type); 3492 outrel.r_addend = rel->r_addend; 3493 } 3494 else 3495 { 3496 if (r_type == R_TILEGX_32 || r_type == R_TILEGX_64) 3497 { 3498 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, 3499 R_TILEGX_RELATIVE); 3500 outrel.r_addend = relocation + rel->r_addend; 3501 } 3502 else 3503 { 3504 long indx; 3505 3506 outrel.r_addend = relocation + rel->r_addend; 3507 3508 if (is_plt) 3509 sec = htab->elf.splt; 3510 3511 if (bfd_is_abs_section (sec)) 3512 indx = 0; 3513 else if (sec == NULL || sec->owner == NULL) 3514 { 3515 bfd_set_error (bfd_error_bad_value); 3516 return FALSE; 3517 } 3518 else 3519 { 3520 asection *osec; 3521 3522 /* We are turning this relocation into one 3523 against a section symbol. It would be 3524 proper to subtract the symbol's value, 3525 osec->vma, from the emitted reloc addend, 3526 but ld.so expects buggy relocs. */ 3527 osec = sec->output_section; 3528 indx = elf_section_data (osec)->dynindx; 3529 3530 if (indx == 0) 3531 { 3532 osec = htab->elf.text_index_section; 3533 indx = elf_section_data (osec)->dynindx; 3534 } 3535 3536 /* FIXME: we really should be able to link non-pic 3537 shared libraries. */ 3538 if (indx == 0) 3539 { 3540 BFD_FAIL (); 3541 _bfd_error_handler 3542 (_("%pB: probably compiled without -fPIC?"), 3543 input_bfd); 3544 bfd_set_error (bfd_error_bad_value); 3545 return FALSE; 3546 } 3547 } 3548 3549 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, indx, 3550 r_type); 3551 } 3552 } 3553 3554 tilegx_elf_append_rela (output_bfd, sreloc, &outrel); 3555 3556 /* This reloc will be computed at runtime, so there's no 3557 need to do anything now. */ 3558 if (! relocate) 3559 continue; 3560 } 3561 break; 3562 3563 case R_TILEGX_IMM16_X0_HW0_TLS_LE: 3564 case R_TILEGX_IMM16_X1_HW0_TLS_LE: 3565 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE: 3566 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE: 3567 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE: 3568 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE: 3569 if (!bfd_link_executable (info)) 3570 { 3571 Elf_Internal_Rela outrel; 3572 bfd_boolean skip; 3573 3574 BFD_ASSERT (sreloc != NULL); 3575 skip = FALSE; 3576 outrel.r_offset = 3577 _bfd_elf_section_offset (output_bfd, info, input_section, 3578 rel->r_offset); 3579 if (outrel.r_offset == (bfd_vma) -1) 3580 skip = TRUE; 3581 else if (outrel.r_offset == (bfd_vma) -2) 3582 skip = TRUE; 3583 outrel.r_offset += (input_section->output_section->vma 3584 + input_section->output_offset); 3585 if (skip) 3586 memset (&outrel, 0, sizeof outrel); 3587 else 3588 { 3589 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, r_type); 3590 outrel.r_addend = relocation - dtpoff_base (info) 3591 + rel->r_addend; 3592 } 3593 3594 tilegx_elf_append_rela (output_bfd, sreloc, &outrel); 3595 continue; 3596 } 3597 relocation = tpoff (info, relocation); 3598 break; 3599 3600 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 3601 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 3602 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 3603 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 3604 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 3605 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 3606 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 3607 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 3608 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 3609 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 3610 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 3611 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 3612 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL, 3613 input_section->sec_flg0); 3614 tls_type = GOT_UNKNOWN; 3615 if (h == NULL && local_got_offsets) 3616 tls_type = 3617 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx]; 3618 else if (h != NULL) 3619 { 3620 tls_type = tilegx_elf_hash_entry(h)->tls_type; 3621 if (bfd_link_executable (info) 3622 && h->dynindx == -1 3623 && tls_type == GOT_TLS_IE) 3624 r_type = (!input_section->sec_flg0 3625 ? tilegx_tls_translate_to_le (r_type) 3626 : tilegx_tls_translate_to_ie (r_type)); 3627 } 3628 3629 if (tls_type == GOT_TLS_IE) 3630 r_type = tilegx_tls_translate_to_ie (r_type); 3631 3632 if (r_type == R_TILEGX_IMM16_X0_HW0_TLS_LE 3633 || r_type == R_TILEGX_IMM16_X1_HW0_TLS_LE 3634 || r_type == R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE 3635 || r_type == R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE 3636 || r_type == R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE 3637 || r_type == R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE) 3638 { 3639 relocation = tpoff (info, relocation); 3640 break; 3641 } 3642 3643 if (h != NULL) 3644 { 3645 off = h->got.offset; 3646 h->got.offset |= 1; 3647 } 3648 else 3649 { 3650 BFD_ASSERT (local_got_offsets != NULL); 3651 off = local_got_offsets[r_symndx]; 3652 local_got_offsets[r_symndx] |= 1; 3653 } 3654 3655 if (htab->elf.sgot == NULL) 3656 abort (); 3657 3658 if ((off & 1) != 0) 3659 off &= ~1; 3660 else 3661 { 3662 Elf_Internal_Rela outrel; 3663 int indx = 0; 3664 bfd_boolean need_relocs = FALSE; 3665 3666 if (htab->elf.srelgot == NULL) 3667 abort (); 3668 3669 if (h != NULL) 3670 { 3671 bfd_boolean dyn; 3672 dyn = htab->elf.dynamic_sections_created; 3673 3674 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 3675 bfd_link_pic (info), 3676 h) 3677 && (!bfd_link_pic (info) 3678 || !SYMBOL_REFERENCES_LOCAL (info, h))) 3679 { 3680 indx = h->dynindx; 3681 } 3682 } 3683 3684 /* The GOT entries have not been initialized yet. Do it 3685 now, and emit any relocations. */ 3686 if ((bfd_link_pic (info) || indx != 0) 3687 && (h == NULL 3688 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 3689 || h->root.type != bfd_link_hash_undefweak)) 3690 need_relocs = TRUE; 3691 3692 switch (r_type) 3693 { 3694 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 3695 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 3696 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 3697 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 3698 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 3699 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 3700 if (need_relocs) { 3701 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 3702 htab->elf.sgot->contents + off); 3703 outrel.r_offset = (htab->elf.sgot->output_section->vma 3704 + htab->elf.sgot->output_offset + off); 3705 outrel.r_addend = 0; 3706 if (indx == 0) 3707 outrel.r_addend = relocation - dtpoff_base (info); 3708 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx, 3709 TILEGX_ELF_TPOFF_RELOC (htab)); 3710 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); 3711 } else { 3712 TILEGX_ELF_PUT_WORD (htab, output_bfd, 3713 tpoff (info, relocation), 3714 htab->elf.sgot->contents + off); 3715 } 3716 break; 3717 3718 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 3719 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 3720 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 3721 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 3722 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 3723 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 3724 if (need_relocs) { 3725 outrel.r_offset = (htab->elf.sgot->output_section->vma 3726 + htab->elf.sgot->output_offset + off); 3727 outrel.r_addend = 0; 3728 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx, 3729 TILEGX_ELF_DTPMOD_RELOC (htab)); 3730 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 3731 htab->elf.sgot->contents + off); 3732 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); 3733 if (indx == 0) 3734 { 3735 BFD_ASSERT (! unresolved_reloc); 3736 TILEGX_ELF_PUT_WORD (htab, output_bfd, 3737 relocation - dtpoff_base (info), 3738 (htab->elf.sgot->contents + off + 3739 TILEGX_ELF_WORD_BYTES (htab))); 3740 } 3741 else 3742 { 3743 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 3744 (htab->elf.sgot->contents + off + 3745 TILEGX_ELF_WORD_BYTES (htab))); 3746 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx, 3747 TILEGX_ELF_DTPOFF_RELOC (htab)); 3748 outrel.r_offset += TILEGX_ELF_WORD_BYTES (htab); 3749 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); 3750 } 3751 } 3752 3753 else { 3754 /* If we are not emitting relocations for a 3755 general dynamic reference, then we must be in a 3756 static link or an executable link with the 3757 symbol binding locally. Mark it as belonging 3758 to module 1, the executable. */ 3759 TILEGX_ELF_PUT_WORD (htab, output_bfd, 1, 3760 htab->elf.sgot->contents + off ); 3761 TILEGX_ELF_PUT_WORD (htab, output_bfd, 3762 relocation - dtpoff_base (info), 3763 htab->elf.sgot->contents + off + 3764 TILEGX_ELF_WORD_BYTES (htab)); 3765 } 3766 break; 3767 } 3768 } 3769 3770 if (off >= (bfd_vma) -2) 3771 abort (); 3772 3773 relocation = off - got_base; 3774 unresolved_reloc = FALSE; 3775 howto = tilegx_elf_howto_table + r_type; 3776 break; 3777 3778 default: 3779 break; 3780 } 3781 3782 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections 3783 because such sections are not SEC_ALLOC and thus ld.so will 3784 not process them. */ 3785 if (unresolved_reloc 3786 && !((input_section->flags & SEC_DEBUGGING) != 0 3787 && h->def_dynamic) 3788 && _bfd_elf_section_offset (output_bfd, info, input_section, 3789 rel->r_offset) != (bfd_vma) -1) 3790 _bfd_error_handler 3791 /* xgettext:c-format */ 3792 (_("%pB(%pA+%#" PRIx64 "): " 3793 "unresolvable %s relocation against symbol `%s'"), 3794 input_bfd, 3795 input_section, 3796 (uint64_t) rel->r_offset, 3797 howto->name, 3798 h->root.root.string); 3799 3800 r = bfd_reloc_continue; 3801 3802 /* Get the operand creation function, if any. */ 3803 create_func = reloc_to_create_func[r_type]; 3804 if (create_func == NULL) 3805 { 3806 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3807 contents, rel->r_offset, 3808 relocation, rel->r_addend); 3809 } 3810 else 3811 { 3812 if (howto->pc_relative) 3813 { 3814 relocation -= 3815 input_section->output_section->vma + input_section->output_offset; 3816 if (howto->pcrel_offset) 3817 relocation -= rel->r_offset; 3818 } 3819 3820 bfd_byte *data; 3821 3822 /* Add the relocation addend if any to the final target value */ 3823 relocation += rel->r_addend; 3824 3825 /* Do basic range checking */ 3826 r = bfd_check_overflow (howto->complain_on_overflow, 3827 howto->bitsize, 3828 howto->rightshift, 3829 TILEGX_ELF_WORD_BYTES (htab) * 8, 3830 relocation); 3831 3832 /* 3833 * Write the relocated value out into the raw section data. 3834 * Don't put a relocation out in the .rela section. 3835 */ 3836 tilegx_bundle_bits mask = create_func(-1); 3837 tilegx_bundle_bits value = create_func(relocation >> howto->rightshift); 3838 3839 /* Only touch bytes while the mask is not 0, so we 3840 don't write to out of bounds memory if this is actually 3841 a 16-bit switch instruction. */ 3842 for (data = contents + rel->r_offset; mask != 0; data++) 3843 { 3844 bfd_byte byte_mask = (bfd_byte)mask; 3845 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask); 3846 mask >>= 8; 3847 value >>= 8; 3848 } 3849 } 3850 3851 if (r != bfd_reloc_ok) 3852 { 3853 const char *msg = NULL; 3854 3855 switch (r) 3856 { 3857 case bfd_reloc_overflow: 3858 (*info->callbacks->reloc_overflow) 3859 (info, (h ? &h->root : NULL), name, howto->name, 3860 (bfd_vma) 0, input_bfd, input_section, rel->r_offset); 3861 break; 3862 3863 case bfd_reloc_undefined: 3864 (*info->callbacks->undefined_symbol) 3865 (info, name, input_bfd, input_section, rel->r_offset, TRUE); 3866 break; 3867 3868 case bfd_reloc_outofrange: 3869 msg = _("internal error: out of range error"); 3870 break; 3871 3872 case bfd_reloc_notsupported: 3873 msg = _("internal error: unsupported relocation error"); 3874 break; 3875 3876 case bfd_reloc_dangerous: 3877 msg = _("internal error: dangerous relocation"); 3878 break; 3879 3880 default: 3881 msg = _("internal error: unknown error"); 3882 break; 3883 } 3884 3885 if (msg) 3886 (*info->callbacks->warning) (info, msg, name, input_bfd, 3887 input_section, rel->r_offset); 3888 } 3889 } 3890 3891 return TRUE; 3892 } 3893 3894 /* Finish up dynamic symbol handling. We set the contents of various 3895 dynamic sections here. */ 3896 3897 bfd_boolean 3898 tilegx_elf_finish_dynamic_symbol (bfd *output_bfd, 3899 struct bfd_link_info *info, 3900 struct elf_link_hash_entry *h, 3901 Elf_Internal_Sym *sym) 3902 { 3903 struct tilegx_elf_link_hash_table *htab; 3904 3905 htab = tilegx_elf_hash_table (info); 3906 BFD_ASSERT (htab != NULL); 3907 3908 if (h->plt.offset != (bfd_vma) -1) 3909 { 3910 asection *splt; 3911 asection *srela; 3912 asection *sgotplt; 3913 Elf_Internal_Rela rela; 3914 bfd_byte *loc; 3915 bfd_vma r_offset; 3916 const struct elf_backend_data *bed = get_elf_backend_data (output_bfd); 3917 3918 3919 int rela_index; 3920 3921 /* This symbol has an entry in the PLT. Set it up. */ 3922 3923 BFD_ASSERT (h->dynindx != -1); 3924 3925 splt = htab->elf.splt; 3926 srela = htab->elf.srelplt; 3927 sgotplt = htab->elf.sgotplt; 3928 3929 if (splt == NULL || srela == NULL) 3930 abort (); 3931 3932 /* Fill in the entry in the procedure linkage table. */ 3933 rela_index = tilegx_plt_entry_build (output_bfd, htab, splt, sgotplt, 3934 h->plt.offset, &r_offset); 3935 3936 /* Fill in the entry in the global offset table, which initially points 3937 to the beginning of the plt. */ 3938 TILEGX_ELF_PUT_WORD (htab, output_bfd, 3939 splt->output_section->vma + splt->output_offset, 3940 sgotplt->contents + r_offset); 3941 3942 /* Fill in the entry in the .rela.plt section. */ 3943 rela.r_offset = (sgotplt->output_section->vma 3944 + sgotplt->output_offset 3945 + r_offset); 3946 rela.r_addend = 0; 3947 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_JMP_SLOT); 3948 3949 loc = srela->contents + rela_index * TILEGX_ELF_RELA_BYTES (htab); 3950 bed->s->swap_reloca_out (output_bfd, &rela, loc); 3951 3952 if (!h->def_regular) 3953 { 3954 /* Mark the symbol as undefined, rather than as defined in 3955 the .plt section. Leave the value alone. */ 3956 sym->st_shndx = SHN_UNDEF; 3957 /* If the symbol is weak, we do need to clear the value. 3958 Otherwise, the PLT entry would provide a definition for 3959 the symbol even if the symbol wasn't defined anywhere, 3960 and so the symbol would never be NULL. */ 3961 if (!h->ref_regular_nonweak) 3962 sym->st_value = 0; 3963 } 3964 } 3965 3966 if (h->got.offset != (bfd_vma) -1 3967 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_GD 3968 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_IE) 3969 { 3970 asection *sgot; 3971 asection *srela; 3972 Elf_Internal_Rela rela; 3973 3974 /* This symbol has an entry in the GOT. Set it up. */ 3975 3976 sgot = htab->elf.sgot; 3977 srela = htab->elf.srelgot; 3978 BFD_ASSERT (sgot != NULL && srela != NULL); 3979 3980 rela.r_offset = (sgot->output_section->vma 3981 + sgot->output_offset 3982 + (h->got.offset &~ (bfd_vma) 1)); 3983 3984 /* If this is a -Bsymbolic link, and the symbol is defined 3985 locally, we just want to emit a RELATIVE reloc. Likewise if 3986 the symbol was forced to be local because of a version file. 3987 The entry in the global offset table will already have been 3988 initialized in the relocate_section function. */ 3989 if (bfd_link_pic (info) 3990 && (info->symbolic || h->dynindx == -1) 3991 && h->def_regular) 3992 { 3993 asection *sec = h->root.u.def.section; 3994 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE); 3995 rela.r_addend = (h->root.u.def.value 3996 + sec->output_section->vma 3997 + sec->output_offset); 3998 } 3999 else 4000 { 4001 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_GLOB_DAT); 4002 rela.r_addend = 0; 4003 } 4004 4005 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 4006 sgot->contents + (h->got.offset & ~(bfd_vma) 1)); 4007 tilegx_elf_append_rela (output_bfd, srela, &rela); 4008 } 4009 4010 if (h->needs_copy) 4011 { 4012 asection *s; 4013 Elf_Internal_Rela rela; 4014 4015 /* This symbols needs a copy reloc. Set it up. */ 4016 BFD_ASSERT (h->dynindx != -1); 4017 4018 if (h->root.u.def.section == htab->elf.sdynrelro) 4019 s = htab->elf.sreldynrelro; 4020 else 4021 s = htab->elf.srelbss; 4022 BFD_ASSERT (s != NULL); 4023 4024 rela.r_offset = (h->root.u.def.value 4025 + h->root.u.def.section->output_section->vma 4026 + h->root.u.def.section->output_offset); 4027 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_COPY); 4028 rela.r_addend = 0; 4029 tilegx_elf_append_rela (output_bfd, s, &rela); 4030 } 4031 4032 /* Mark some specially defined symbols as absolute. */ 4033 if (h == htab->elf.hdynamic 4034 || (h == htab->elf.hgot || h == htab->elf.hplt)) 4035 sym->st_shndx = SHN_ABS; 4036 4037 return TRUE; 4038 } 4039 4040 /* Finish up the dynamic sections. */ 4041 4042 static bfd_boolean 4043 tilegx_finish_dyn (bfd *output_bfd, struct bfd_link_info *info, 4044 bfd *dynobj, asection *sdyn, 4045 asection *splt ATTRIBUTE_UNUSED) 4046 { 4047 struct tilegx_elf_link_hash_table *htab; 4048 const struct elf_backend_data *bed; 4049 bfd_byte *dyncon, *dynconend; 4050 size_t dynsize; 4051 4052 htab = tilegx_elf_hash_table (info); 4053 BFD_ASSERT (htab != NULL); 4054 bed = get_elf_backend_data (output_bfd); 4055 dynsize = bed->s->sizeof_dyn; 4056 dynconend = sdyn->contents + sdyn->size; 4057 4058 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize) 4059 { 4060 Elf_Internal_Dyn dyn; 4061 asection *s; 4062 4063 bed->s->swap_dyn_in (dynobj, dyncon, &dyn); 4064 4065 switch (dyn.d_tag) 4066 { 4067 case DT_PLTGOT: 4068 s = htab->elf.sgotplt; 4069 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 4070 break; 4071 case DT_JMPREL: 4072 s = htab->elf.srelplt; 4073 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 4074 break; 4075 case DT_PLTRELSZ: 4076 s = htab->elf.srelplt; 4077 dyn.d_un.d_val = s->size; 4078 break; 4079 default: 4080 continue; 4081 } 4082 4083 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon); 4084 } 4085 return TRUE; 4086 } 4087 4088 bfd_boolean 4089 tilegx_elf_finish_dynamic_sections (bfd *output_bfd, 4090 struct bfd_link_info *info) 4091 { 4092 bfd *dynobj; 4093 asection *sdyn; 4094 struct tilegx_elf_link_hash_table *htab; 4095 size_t pad_size; 4096 4097 htab = tilegx_elf_hash_table (info); 4098 BFD_ASSERT (htab != NULL); 4099 dynobj = htab->elf.dynobj; 4100 4101 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 4102 4103 if (elf_hash_table (info)->dynamic_sections_created) 4104 { 4105 asection *splt; 4106 bfd_boolean ret; 4107 4108 splt = htab->elf.splt; 4109 BFD_ASSERT (splt != NULL && sdyn != NULL); 4110 4111 ret = tilegx_finish_dyn (output_bfd, info, dynobj, sdyn, splt); 4112 4113 if (!ret) 4114 return ret; 4115 4116 /* Fill in the head and tail entries in the procedure linkage table. */ 4117 if (splt->size > 0) 4118 { 4119 memcpy (splt->contents, 4120 ABI_64_P (output_bfd) ? 4121 tilegx64_plt0_entry : tilegx32_plt0_entry, 4122 PLT_HEADER_SIZE); 4123 4124 memcpy (splt->contents + splt->size 4125 - PLT_ENTRY_SIZE + PLT_HEADER_SIZE, 4126 ABI_64_P (output_bfd) ? 4127 tilegx64_plt_tail_entry : tilegx32_plt_tail_entry, 4128 PLT_TAIL_SIZE); 4129 /* Add padding so that the plt section is a multiple of its 4130 entry size. */ 4131 pad_size = PLT_ENTRY_SIZE - PLT_HEADER_SIZE - PLT_TAIL_SIZE; 4132 memset (splt->contents + splt->size - pad_size, 0, pad_size); 4133 4134 elf_section_data (splt->output_section)->this_hdr.sh_entsize 4135 = PLT_ENTRY_SIZE; 4136 } 4137 } 4138 4139 if (htab->elf.sgotplt) 4140 { 4141 if (bfd_is_abs_section (htab->elf.sgotplt->output_section)) 4142 { 4143 _bfd_error_handler 4144 (_("discarded output section: `%pA'"), htab->elf.sgotplt); 4145 return FALSE; 4146 } 4147 4148 if (htab->elf.sgotplt->size > 0) 4149 { 4150 /* Write the first two entries in .got.plt, needed for the dynamic 4151 linker. */ 4152 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) -1, 4153 htab->elf.sgotplt->contents); 4154 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) 0, 4155 htab->elf.sgotplt->contents 4156 + GOT_ENTRY_SIZE (htab)); 4157 4158 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4159 GOT_ENTRY_SIZE (htab); 4160 } 4161 } 4162 4163 if (htab->elf.sgot) 4164 { 4165 if (htab->elf.sgot->size > 0) 4166 { 4167 /* Set the first entry in the global offset table to the address of 4168 the dynamic section. */ 4169 bfd_vma val = (sdyn ? 4170 sdyn->output_section->vma + sdyn->output_offset : 4171 0); 4172 TILEGX_ELF_PUT_WORD (htab, output_bfd, val, 4173 htab->elf.sgot->contents); 4174 4175 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4176 GOT_ENTRY_SIZE (htab); 4177 } 4178 } 4179 4180 return TRUE; 4181 } 4182 4183 4184 4185 /* Return address for Ith PLT stub in section PLT, for relocation REL 4186 or (bfd_vma) -1 if it should not be included. */ 4187 4188 bfd_vma 4189 tilegx_elf_plt_sym_val (bfd_vma i, const asection *plt, 4190 const arelent *rel ATTRIBUTE_UNUSED) 4191 { 4192 return plt->vma + PLT_HEADER_SIZE + i * PLT_ENTRY_SIZE; 4193 } 4194 4195 enum elf_reloc_type_class 4196 tilegx_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, 4197 const asection *rel_sec ATTRIBUTE_UNUSED, 4198 const Elf_Internal_Rela *rela) 4199 { 4200 switch ((int) TILEGX_ELF_R_TYPE (rela->r_info)) 4201 { 4202 case R_TILEGX_RELATIVE: 4203 return reloc_class_relative; 4204 case R_TILEGX_JMP_SLOT: 4205 return reloc_class_plt; 4206 case R_TILEGX_COPY: 4207 return reloc_class_copy; 4208 default: 4209 return reloc_class_normal; 4210 } 4211 } 4212 4213 int 4214 tilegx_additional_program_headers (bfd *abfd, 4215 struct bfd_link_info *info ATTRIBUTE_UNUSED) 4216 { 4217 /* Each .intrpt section specified by the user adds another PT_LOAD 4218 header since the sections are discontiguous. */ 4219 static const char intrpt_sections[4][9] = 4220 { 4221 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3" 4222 }; 4223 int count = 0; 4224 int i; 4225 4226 for (i = 0; i < 4; i++) 4227 { 4228 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]); 4229 if (sec != NULL && (sec->flags & SEC_LOAD) != 0) 4230 ++count; 4231 } 4232 4233 /* Add four "padding" headers in to leave room in case a custom linker 4234 script does something fancy. Otherwise ld complains that it ran 4235 out of program headers and refuses to link. */ 4236 count += 4; 4237 4238 return count; 4239 } 4240 4241 4242 bfd_boolean 4243 _bfd_tilegx_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) 4244 { 4245 bfd *obfd = info->output_bfd; 4246 const char *targ1 = bfd_get_target (ibfd); 4247 const char *targ2 = bfd_get_target (obfd); 4248 4249 if (strcmp (targ1, targ2) != 0) 4250 { 4251 _bfd_error_handler 4252 /* xgettext:c-format */ 4253 (_("%pB: cannot link together %s and %s objects"), 4254 ibfd, targ1, targ2); 4255 bfd_set_error (bfd_error_bad_value); 4256 return FALSE; 4257 } 4258 4259 return TRUE; 4260 } 4261