1 /* TILE-Gx-specific support for ELF. 2 Copyright (C) 2011-2018 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 (abfd, 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 (abfd, 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 (abfd, s, 1459 bed->s->log_file_align)) 1460 return FALSE; 1461 htab->sgotplt = s; 1462 1463 /* Reserve room for the header. */ 1464 s->size += GOTPLT_HEADER_SIZE (tilegx_elf_hash_table (info)); 1465 } 1466 1467 if (bed->want_got_sym) 1468 { 1469 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got 1470 section. We don't do this in the linker script because we don't want 1471 to define the symbol if we are not creating a global offset 1472 table. */ 1473 h = _bfd_elf_define_linkage_sym (abfd, info, s_got, 1474 "_GLOBAL_OFFSET_TABLE_"); 1475 elf_hash_table (info)->hgot = h; 1476 if (h == NULL) 1477 return FALSE; 1478 } 1479 1480 return TRUE; 1481 } 1482 1483 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and 1484 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our 1485 hash table. */ 1486 1487 bfd_boolean 1488 tilegx_elf_create_dynamic_sections (bfd *dynobj, 1489 struct bfd_link_info *info) 1490 { 1491 if (!tilegx_elf_create_got_section (dynobj, info)) 1492 return FALSE; 1493 1494 return _bfd_elf_create_dynamic_sections (dynobj, info); 1495 } 1496 1497 /* Copy the extra info we tack onto an elf_link_hash_entry. */ 1498 1499 void 1500 tilegx_elf_copy_indirect_symbol (struct bfd_link_info *info, 1501 struct elf_link_hash_entry *dir, 1502 struct elf_link_hash_entry *ind) 1503 { 1504 struct tilegx_elf_link_hash_entry *edir, *eind; 1505 1506 edir = (struct tilegx_elf_link_hash_entry *) dir; 1507 eind = (struct tilegx_elf_link_hash_entry *) ind; 1508 1509 if (eind->dyn_relocs != NULL) 1510 { 1511 if (edir->dyn_relocs != NULL) 1512 { 1513 struct elf_dyn_relocs **pp; 1514 struct elf_dyn_relocs *p; 1515 1516 /* Add reloc counts against the indirect sym to the direct sym 1517 list. Merge any entries against the same section. */ 1518 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) 1519 { 1520 struct elf_dyn_relocs *q; 1521 1522 for (q = edir->dyn_relocs; q != NULL; q = q->next) 1523 if (q->sec == p->sec) 1524 { 1525 q->pc_count += p->pc_count; 1526 q->count += p->count; 1527 *pp = p->next; 1528 break; 1529 } 1530 if (q == NULL) 1531 pp = &p->next; 1532 } 1533 *pp = edir->dyn_relocs; 1534 } 1535 1536 edir->dyn_relocs = eind->dyn_relocs; 1537 eind->dyn_relocs = NULL; 1538 } 1539 1540 if (ind->root.type == bfd_link_hash_indirect 1541 && dir->got.refcount <= 0) 1542 { 1543 edir->tls_type = eind->tls_type; 1544 eind->tls_type = GOT_UNKNOWN; 1545 } 1546 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 1547 } 1548 1549 static int 1550 tilegx_tls_translate_to_le (int r_type) 1551 { 1552 switch (r_type) 1553 { 1554 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 1555 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 1556 return R_TILEGX_IMM16_X0_HW0_TLS_LE; 1557 1558 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 1559 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 1560 return R_TILEGX_IMM16_X1_HW0_TLS_LE; 1561 1562 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 1563 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 1564 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE; 1565 1566 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 1567 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 1568 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE; 1569 1570 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 1571 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 1572 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE; 1573 1574 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 1575 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 1576 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE; 1577 } 1578 return r_type; 1579 } 1580 1581 static int 1582 tilegx_tls_translate_to_ie (int r_type) 1583 { 1584 switch (r_type) 1585 { 1586 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 1587 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 1588 return R_TILEGX_IMM16_X0_HW0_TLS_IE; 1589 1590 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 1591 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 1592 return R_TILEGX_IMM16_X1_HW0_TLS_IE; 1593 1594 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 1595 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 1596 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE; 1597 1598 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 1599 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 1600 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE; 1601 1602 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 1603 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 1604 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE; 1605 1606 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 1607 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 1608 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE; 1609 } 1610 return r_type; 1611 } 1612 1613 static int 1614 tilegx_elf_tls_transition (struct bfd_link_info *info, int r_type, 1615 int is_local, bfd_boolean disable_le_transition) 1616 { 1617 if (!bfd_link_executable (info)) 1618 return r_type; 1619 1620 if (is_local && !disable_le_transition) 1621 return tilegx_tls_translate_to_le (r_type); 1622 else 1623 return tilegx_tls_translate_to_ie (r_type); 1624 } 1625 1626 /* Look through the relocs for a section during the first phase, and 1627 allocate space in the global offset table or procedure linkage 1628 table. */ 1629 1630 bfd_boolean 1631 tilegx_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, 1632 asection *sec, const Elf_Internal_Rela *relocs) 1633 { 1634 struct tilegx_elf_link_hash_table *htab; 1635 Elf_Internal_Shdr *symtab_hdr; 1636 struct elf_link_hash_entry **sym_hashes; 1637 const Elf_Internal_Rela *rel; 1638 const Elf_Internal_Rela *rel_end; 1639 asection *sreloc; 1640 int num_relocs; 1641 bfd_boolean has_tls_gd_or_ie = FALSE, has_tls_add = FALSE; 1642 1643 if (bfd_link_relocatable (info)) 1644 return TRUE; 1645 1646 htab = tilegx_elf_hash_table (info); 1647 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 1648 sym_hashes = elf_sym_hashes (abfd); 1649 1650 sreloc = NULL; 1651 1652 num_relocs = sec->reloc_count; 1653 1654 BFD_ASSERT (is_tilegx_elf (abfd) || num_relocs == 0); 1655 1656 if (htab->elf.dynobj == NULL) 1657 htab->elf.dynobj = abfd; 1658 1659 rel_end = relocs + num_relocs; 1660 1661 /* Check whether to do optimization to transform TLS GD/IE 1662 referehces to TLS LE. We disable it if we're linking with old 1663 TLS code sequences that do not support such optimization. Old 1664 TLS code sequences have tls_gd_call/tls_ie_load relocations but 1665 no tls_add relocations. */ 1666 for (rel = relocs; rel < rel_end && !has_tls_add; rel++) 1667 { 1668 int r_type = TILEGX_ELF_R_TYPE (rel->r_info); 1669 switch (r_type) 1670 { 1671 case R_TILEGX_TLS_GD_CALL: 1672 case R_TILEGX_TLS_IE_LOAD: 1673 has_tls_gd_or_ie = TRUE; 1674 break; 1675 case R_TILEGX_IMM8_X0_TLS_ADD: 1676 case R_TILEGX_IMM8_Y0_TLS_ADD: 1677 case R_TILEGX_IMM8_X1_TLS_ADD: 1678 case R_TILEGX_IMM8_Y1_TLS_ADD: 1679 has_tls_add = TRUE; 1680 break; 1681 } 1682 } 1683 1684 sec->sec_flg0 = (has_tls_gd_or_ie && !has_tls_add); 1685 htab->disable_le_transition |= sec->sec_flg0; 1686 1687 for (rel = relocs; rel < rel_end; rel++) 1688 { 1689 unsigned int r_type; 1690 unsigned int r_symndx; 1691 struct elf_link_hash_entry *h; 1692 int tls_type; 1693 1694 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info); 1695 r_type = TILEGX_ELF_R_TYPE (rel->r_info); 1696 1697 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) 1698 { 1699 /* xgettext:c-format */ 1700 _bfd_error_handler (_("%pB: bad symbol index: %d"), 1701 abfd, r_symndx); 1702 return FALSE; 1703 } 1704 1705 if (r_symndx < symtab_hdr->sh_info) 1706 h = NULL; 1707 else 1708 { 1709 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 1710 while (h->root.type == bfd_link_hash_indirect 1711 || h->root.type == bfd_link_hash_warning) 1712 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1713 } 1714 1715 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL, 1716 sec->sec_flg0); 1717 switch (r_type) 1718 { 1719 case R_TILEGX_IMM16_X0_HW0_TLS_LE: 1720 case R_TILEGX_IMM16_X1_HW0_TLS_LE: 1721 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE: 1722 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE: 1723 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE: 1724 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE: 1725 if (!bfd_link_executable (info)) 1726 goto r_tilegx_plt32; 1727 break; 1728 1729 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 1730 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 1731 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 1732 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 1733 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 1734 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 1735 BFD_ASSERT (bfd_link_pic (info)); 1736 tls_type = GOT_TLS_GD; 1737 goto have_got_reference; 1738 1739 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 1740 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 1741 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 1742 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 1743 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 1744 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 1745 tls_type = GOT_TLS_IE; 1746 if (!bfd_link_executable (info)) 1747 info->flags |= DF_STATIC_TLS; 1748 goto have_got_reference; 1749 1750 case R_TILEGX_IMM16_X0_HW0_GOT: 1751 case R_TILEGX_IMM16_X1_HW0_GOT: 1752 case R_TILEGX_IMM16_X0_HW0_LAST_GOT: 1753 case R_TILEGX_IMM16_X1_HW0_LAST_GOT: 1754 case R_TILEGX_IMM16_X0_HW1_LAST_GOT: 1755 case R_TILEGX_IMM16_X1_HW1_LAST_GOT: 1756 tls_type = GOT_NORMAL; 1757 /* Fall Through */ 1758 1759 have_got_reference: 1760 /* This symbol requires a global offset table entry. */ 1761 { 1762 int old_tls_type; 1763 1764 if (h != NULL) 1765 { 1766 h->got.refcount += 1; 1767 old_tls_type = tilegx_elf_hash_entry(h)->tls_type; 1768 } 1769 else 1770 { 1771 bfd_signed_vma *local_got_refcounts; 1772 1773 /* This is a global offset table entry for a local symbol. */ 1774 local_got_refcounts = elf_local_got_refcounts (abfd); 1775 if (local_got_refcounts == NULL) 1776 { 1777 bfd_size_type size; 1778 1779 size = symtab_hdr->sh_info; 1780 size *= (sizeof (bfd_signed_vma) + sizeof(char)); 1781 local_got_refcounts = ((bfd_signed_vma *) 1782 bfd_zalloc (abfd, size)); 1783 if (local_got_refcounts == NULL) 1784 return FALSE; 1785 elf_local_got_refcounts (abfd) = local_got_refcounts; 1786 _bfd_tilegx_elf_local_got_tls_type (abfd) 1787 = (char *) (local_got_refcounts + symtab_hdr->sh_info); 1788 } 1789 local_got_refcounts[r_symndx] += 1; 1790 old_tls_type = _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx]; 1791 } 1792 1793 /* If a TLS symbol is accessed using IE at least once, 1794 there is no point to use dynamic model for it. */ 1795 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN 1796 && (old_tls_type != GOT_TLS_GD 1797 || tls_type != GOT_TLS_IE)) 1798 { 1799 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD) 1800 tls_type = old_tls_type; 1801 else 1802 { 1803 _bfd_error_handler 1804 /* xgettext:c-format */ 1805 (_("%pB: `%s' accessed both as normal and thread local symbol"), 1806 abfd, h ? h->root.root.string : "<local>"); 1807 return FALSE; 1808 } 1809 } 1810 1811 if (old_tls_type != tls_type) 1812 { 1813 if (h != NULL) 1814 tilegx_elf_hash_entry (h)->tls_type = tls_type; 1815 else 1816 _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx] = tls_type; 1817 } 1818 } 1819 1820 if (htab->elf.sgot == NULL) 1821 { 1822 if (!tilegx_elf_create_got_section (htab->elf.dynobj, info)) 1823 return FALSE; 1824 } 1825 break; 1826 1827 case R_TILEGX_TLS_GD_CALL: 1828 if (!bfd_link_executable (info)) 1829 { 1830 /* These are basically R_TILEGX_JUMPOFF_X1_PLT relocs 1831 against __tls_get_addr. */ 1832 struct bfd_link_hash_entry *bh = NULL; 1833 if (! _bfd_generic_link_add_one_symbol (info, abfd, 1834 "__tls_get_addr", 0, 1835 bfd_und_section_ptr, 0, 1836 NULL, FALSE, FALSE, 1837 &bh)) 1838 return FALSE; 1839 h = (struct elf_link_hash_entry *) bh; 1840 } 1841 else 1842 break; 1843 /* Fall through */ 1844 1845 case R_TILEGX_JUMPOFF_X1_PLT: 1846 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL: 1847 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL: 1848 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL: 1849 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL: 1850 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL: 1851 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL: 1852 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL: 1853 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL: 1854 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL: 1855 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL: 1856 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL: 1857 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL: 1858 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL: 1859 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL: 1860 /* This symbol requires a procedure linkage table entry. We 1861 actually build the entry in adjust_dynamic_symbol, 1862 because this might be a case of linking PIC code without 1863 linking in any dynamic objects, in which case we don't 1864 need to generate a procedure linkage table after all. */ 1865 1866 if (h != NULL) 1867 { 1868 h->needs_plt = 1; 1869 h->plt.refcount += 1; 1870 } 1871 break; 1872 1873 case R_TILEGX_64_PCREL: 1874 case R_TILEGX_32_PCREL: 1875 case R_TILEGX_16_PCREL: 1876 case R_TILEGX_8_PCREL: 1877 case R_TILEGX_IMM16_X0_HW0_PCREL: 1878 case R_TILEGX_IMM16_X1_HW0_PCREL: 1879 case R_TILEGX_IMM16_X0_HW1_PCREL: 1880 case R_TILEGX_IMM16_X1_HW1_PCREL: 1881 case R_TILEGX_IMM16_X0_HW2_PCREL: 1882 case R_TILEGX_IMM16_X1_HW2_PCREL: 1883 case R_TILEGX_IMM16_X0_HW3_PCREL: 1884 case R_TILEGX_IMM16_X1_HW3_PCREL: 1885 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL: 1886 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL: 1887 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL: 1888 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL: 1889 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL: 1890 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL: 1891 if (h != NULL) 1892 h->non_got_ref = 1; 1893 1894 if (h != NULL 1895 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 1896 break; 1897 /* Fall through. */ 1898 1899 case R_TILEGX_64: 1900 case R_TILEGX_32: 1901 case R_TILEGX_16: 1902 case R_TILEGX_8: 1903 case R_TILEGX_HW0: 1904 case R_TILEGX_HW1: 1905 case R_TILEGX_HW2: 1906 case R_TILEGX_HW3: 1907 case R_TILEGX_HW0_LAST: 1908 case R_TILEGX_HW1_LAST: 1909 case R_TILEGX_HW2_LAST: 1910 case R_TILEGX_COPY: 1911 case R_TILEGX_GLOB_DAT: 1912 case R_TILEGX_JMP_SLOT: 1913 case R_TILEGX_RELATIVE: 1914 case R_TILEGX_BROFF_X1: 1915 case R_TILEGX_JUMPOFF_X1: 1916 case R_TILEGX_IMM8_X0: 1917 case R_TILEGX_IMM8_Y0: 1918 case R_TILEGX_IMM8_X1: 1919 case R_TILEGX_IMM8_Y1: 1920 case R_TILEGX_DEST_IMM8_X1: 1921 case R_TILEGX_MT_IMM14_X1: 1922 case R_TILEGX_MF_IMM14_X1: 1923 case R_TILEGX_MMSTART_X0: 1924 case R_TILEGX_MMEND_X0: 1925 case R_TILEGX_SHAMT_X0: 1926 case R_TILEGX_SHAMT_X1: 1927 case R_TILEGX_SHAMT_Y0: 1928 case R_TILEGX_SHAMT_Y1: 1929 case R_TILEGX_IMM16_X0_HW0: 1930 case R_TILEGX_IMM16_X1_HW0: 1931 case R_TILEGX_IMM16_X0_HW1: 1932 case R_TILEGX_IMM16_X1_HW1: 1933 case R_TILEGX_IMM16_X0_HW2: 1934 case R_TILEGX_IMM16_X1_HW2: 1935 case R_TILEGX_IMM16_X0_HW3: 1936 case R_TILEGX_IMM16_X1_HW3: 1937 case R_TILEGX_IMM16_X0_HW0_LAST: 1938 case R_TILEGX_IMM16_X1_HW0_LAST: 1939 case R_TILEGX_IMM16_X0_HW1_LAST: 1940 case R_TILEGX_IMM16_X1_HW1_LAST: 1941 case R_TILEGX_IMM16_X0_HW2_LAST: 1942 case R_TILEGX_IMM16_X1_HW2_LAST: 1943 if (h != NULL) 1944 h->non_got_ref = 1; 1945 1946 r_tilegx_plt32: 1947 if (h != NULL && !bfd_link_pic (info)) 1948 { 1949 /* We may need a .plt entry if the function this reloc 1950 refers to is in a shared lib. */ 1951 h->plt.refcount += 1; 1952 } 1953 1954 /* If we are creating a shared library, and this is a reloc 1955 against a global symbol, or a non PC relative reloc 1956 against a local symbol, then we need to copy the reloc 1957 into the shared library. However, if we are linking with 1958 -Bsymbolic, we do not need to copy a reloc against a 1959 global symbol which is defined in an object we are 1960 including in the link (i.e., DEF_REGULAR is set). At 1961 this point we have not seen all the input files, so it is 1962 possible that DEF_REGULAR is not set now but will be set 1963 later (it is never cleared). In case of a weak definition, 1964 DEF_REGULAR may be cleared later by a strong definition in 1965 a shared library. We account for that possibility below by 1966 storing information in the relocs_copied field of the hash 1967 table entry. A similar situation occurs when creating 1968 shared libraries and symbol visibility changes render the 1969 symbol local. 1970 1971 If on the other hand, we are creating an executable, we 1972 may need to keep relocations for symbols satisfied by a 1973 dynamic library if we manage to avoid copy relocs for the 1974 symbol. */ 1975 if ((bfd_link_pic (info) 1976 && (sec->flags & SEC_ALLOC) != 0 1977 && (! tilegx_elf_howto_table[r_type].pc_relative 1978 || (h != NULL 1979 && (! info->symbolic 1980 || h->root.type == bfd_link_hash_defweak 1981 || !h->def_regular)))) 1982 || (!bfd_link_pic (info) 1983 && (sec->flags & SEC_ALLOC) != 0 1984 && h != NULL 1985 && (h->root.type == bfd_link_hash_defweak 1986 || !h->def_regular))) 1987 { 1988 struct elf_dyn_relocs *p; 1989 struct elf_dyn_relocs **head; 1990 1991 /* When creating a shared object, we must copy these 1992 relocs into the output file. We create a reloc 1993 section in dynobj and make room for the reloc. */ 1994 if (sreloc == NULL) 1995 { 1996 sreloc = _bfd_elf_make_dynamic_reloc_section 1997 (sec, htab->elf.dynobj, htab->word_align_power, abfd, 1998 /*rela?*/ TRUE); 1999 2000 if (sreloc == NULL) 2001 return FALSE; 2002 } 2003 2004 /* If this is a global symbol, we count the number of 2005 relocations we need for this symbol. */ 2006 if (h != NULL) 2007 head = 2008 &((struct tilegx_elf_link_hash_entry *) h)->dyn_relocs; 2009 else 2010 { 2011 /* Track dynamic relocs needed for local syms too. 2012 We really need local syms available to do this 2013 easily. Oh well. */ 2014 2015 asection *s; 2016 void *vpp; 2017 Elf_Internal_Sym *isym; 2018 2019 isym = bfd_sym_from_r_symndx (&htab->sym_cache, 2020 abfd, r_symndx); 2021 if (isym == NULL) 2022 return FALSE; 2023 2024 s = bfd_section_from_elf_index (abfd, isym->st_shndx); 2025 if (s == NULL) 2026 s = sec; 2027 2028 vpp = &elf_section_data (s)->local_dynrel; 2029 head = (struct elf_dyn_relocs **) vpp; 2030 } 2031 2032 p = *head; 2033 if (p == NULL || p->sec != sec) 2034 { 2035 bfd_size_type amt = sizeof *p; 2036 p = ((struct elf_dyn_relocs *) 2037 bfd_alloc (htab->elf.dynobj, amt)); 2038 if (p == NULL) 2039 return FALSE; 2040 p->next = *head; 2041 *head = p; 2042 p->sec = sec; 2043 p->count = 0; 2044 p->pc_count = 0; 2045 } 2046 2047 p->count += 1; 2048 if (tilegx_elf_howto_table[r_type].pc_relative) 2049 p->pc_count += 1; 2050 } 2051 2052 break; 2053 2054 case R_TILEGX_GNU_VTINHERIT: 2055 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 2056 return FALSE; 2057 break; 2058 2059 case R_TILEGX_GNU_VTENTRY: 2060 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 2061 return FALSE; 2062 break; 2063 2064 default: 2065 break; 2066 } 2067 } 2068 2069 return TRUE; 2070 } 2071 2072 2073 asection * 2074 tilegx_elf_gc_mark_hook (asection *sec, 2075 struct bfd_link_info *info, 2076 Elf_Internal_Rela *rel, 2077 struct elf_link_hash_entry *h, 2078 Elf_Internal_Sym *sym) 2079 { 2080 if (h != NULL) 2081 { 2082 switch (TILEGX_ELF_R_TYPE (rel->r_info)) 2083 { 2084 case R_TILEGX_GNU_VTINHERIT: 2085 case R_TILEGX_GNU_VTENTRY: 2086 return NULL; 2087 } 2088 } 2089 2090 /* FIXME: The test here, in check_relocs and in relocate_section 2091 dealing with TLS optimization, ought to be !bfd_link_executable (info). */ 2092 if (bfd_link_pic (info)) 2093 { 2094 struct bfd_link_hash_entry *bh; 2095 2096 switch (TILEGX_ELF_R_TYPE (rel->r_info)) 2097 { 2098 case R_TILEGX_TLS_GD_CALL: 2099 /* This reloc implicitly references __tls_get_addr. We know 2100 another reloc will reference the same symbol as the one 2101 on this reloc, so the real symbol and section will be 2102 gc marked when processing the other reloc. That lets 2103 us handle __tls_get_addr here. */ 2104 bh = NULL; 2105 if (! _bfd_generic_link_add_one_symbol (info, sec->owner, 2106 "__tls_get_addr", 0, 2107 bfd_und_section_ptr, 2108 0, NULL, FALSE, 2109 FALSE, &bh)) 2110 return NULL; 2111 h = (struct elf_link_hash_entry *) bh; 2112 BFD_ASSERT (h != NULL); 2113 h->mark = 1; 2114 if (h->is_weakalias) 2115 weakdef (h)->mark = 1; 2116 sym = NULL; 2117 } 2118 } 2119 2120 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 2121 } 2122 2123 /* Find dynamic relocs for H that apply to read-only sections. */ 2124 2125 static asection * 2126 readonly_dynrelocs (struct elf_link_hash_entry *h) 2127 { 2128 struct elf_dyn_relocs *p; 2129 2130 for (p = tilegx_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) 2131 { 2132 asection *s = p->sec->output_section; 2133 2134 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2135 return p->sec; 2136 } 2137 return NULL; 2138 } 2139 2140 /* Adjust a symbol defined by a dynamic object and referenced by a 2141 regular object. The current definition is in some section of the 2142 dynamic object, but we're not including those sections. We have to 2143 change the definition to something the rest of the link can 2144 understand. */ 2145 2146 bfd_boolean 2147 tilegx_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 2148 struct elf_link_hash_entry *h) 2149 { 2150 struct tilegx_elf_link_hash_table *htab; 2151 bfd *dynobj; 2152 asection *s, *srel; 2153 2154 htab = tilegx_elf_hash_table (info); 2155 BFD_ASSERT (htab != NULL); 2156 2157 dynobj = htab->elf.dynobj; 2158 2159 /* Make sure we know what is going on here. */ 2160 BFD_ASSERT (dynobj != NULL 2161 && (h->needs_plt 2162 || h->is_weakalias 2163 || (h->def_dynamic 2164 && h->ref_regular 2165 && !h->def_regular))); 2166 2167 /* If this is a function, put it in the procedure linkage table. We 2168 will fill in the contents of the procedure linkage table later 2169 (although we could actually do it here). */ 2170 if (h->type == STT_FUNC || h->needs_plt) 2171 { 2172 if (h->plt.refcount <= 0 2173 || SYMBOL_CALLS_LOCAL (info, h) 2174 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT 2175 && h->root.type == bfd_link_hash_undefweak)) 2176 { 2177 /* This case can occur if we saw a R_TILEGX_JUMPOFF_X1_PLT 2178 reloc in an input file, but the symbol was never referred 2179 to by a dynamic object, or if all references were garbage 2180 collected. In such a case, we don't actually need to build 2181 a procedure linkage table, and we can just do a 2182 R_TILEGX_JUMPOFF_X1 relocation instead. */ 2183 h->plt.offset = (bfd_vma) -1; 2184 h->needs_plt = 0; 2185 } 2186 2187 return TRUE; 2188 } 2189 else 2190 h->plt.offset = (bfd_vma) -1; 2191 2192 /* If this is a weak symbol, and there is a real definition, the 2193 processor independent code will have arranged for us to see the 2194 real definition first, and we can just use the same value. */ 2195 if (h->is_weakalias) 2196 { 2197 struct elf_link_hash_entry *def = weakdef (h); 2198 BFD_ASSERT (def->root.type == bfd_link_hash_defined); 2199 h->root.u.def.section = def->root.u.def.section; 2200 h->root.u.def.value = def->root.u.def.value; 2201 return TRUE; 2202 } 2203 2204 /* This is a reference to a symbol defined by a dynamic object which 2205 is not a function. */ 2206 2207 /* If we are creating a shared library, we must presume that the 2208 only references to the symbol are via the global offset table. 2209 For such cases we need not do anything here; the relocations will 2210 be handled correctly by relocate_section. */ 2211 if (bfd_link_pic (info)) 2212 return TRUE; 2213 2214 /* If there are no references to this symbol that do not use the 2215 GOT, we don't need to generate a copy reloc. */ 2216 if (!h->non_got_ref) 2217 return TRUE; 2218 2219 /* If -z nocopyreloc was given, we won't generate them either. */ 2220 if (info->nocopyreloc) 2221 { 2222 h->non_got_ref = 0; 2223 return TRUE; 2224 } 2225 2226 /* If we don't find any dynamic relocs in read-only sections, then 2227 we'll be keeping the dynamic relocs and avoiding the copy reloc. */ 2228 if (!readonly_dynrelocs (h)) 2229 { 2230 h->non_got_ref = 0; 2231 return TRUE; 2232 } 2233 2234 /* We must allocate the symbol in our .dynbss section, which will 2235 become part of the .bss section of the executable. There will be 2236 an entry for this symbol in the .dynsym section. The dynamic 2237 object will contain position independent code, so all references 2238 from the dynamic object to this symbol will go through the global 2239 offset table. The dynamic linker will use the .dynsym entry to 2240 determine the address it must put in the global offset table, so 2241 both the dynamic object and the regular object will refer to the 2242 same memory location for the variable. */ 2243 2244 /* We must generate a R_TILEGX_COPY reloc to tell the dynamic linker 2245 to copy the initial value out of the dynamic object and into the 2246 runtime process image. We need to remember the offset into the 2247 .rel.bss section we are going to use. */ 2248 if ((h->root.u.def.section->flags & SEC_READONLY) != 0) 2249 { 2250 s = htab->elf.sdynrelro; 2251 srel = htab->elf.sreldynrelro; 2252 } 2253 else 2254 { 2255 s = htab->elf.sdynbss; 2256 srel = htab->elf.srelbss; 2257 } 2258 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) 2259 { 2260 srel->size += TILEGX_ELF_RELA_BYTES (htab); 2261 h->needs_copy = 1; 2262 } 2263 2264 return _bfd_elf_adjust_dynamic_copy (info, h, s); 2265 } 2266 2267 /* Allocate space in .plt, .got and associated reloc sections for 2268 dynamic relocs. */ 2269 2270 static bfd_boolean 2271 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) 2272 { 2273 struct bfd_link_info *info; 2274 struct tilegx_elf_link_hash_table *htab; 2275 struct tilegx_elf_link_hash_entry *eh; 2276 struct elf_dyn_relocs *p; 2277 2278 if (h->root.type == bfd_link_hash_indirect) 2279 return TRUE; 2280 2281 info = (struct bfd_link_info *) inf; 2282 htab = tilegx_elf_hash_table (info); 2283 BFD_ASSERT (htab != NULL); 2284 2285 if (htab->elf.dynamic_sections_created 2286 && h->plt.refcount > 0) 2287 { 2288 /* Make sure this symbol is output as a dynamic symbol. 2289 Undefined weak syms won't yet be marked as dynamic. */ 2290 if (h->dynindx == -1 2291 && !h->forced_local) 2292 { 2293 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2294 return FALSE; 2295 } 2296 2297 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) 2298 { 2299 asection *s = htab->elf.splt; 2300 2301 /* Allocate room for the header and tail. */ 2302 if (s->size == 0) 2303 { 2304 s->size = PLT_ENTRY_SIZE; 2305 } 2306 2307 h->plt.offset = s->size - PLT_ENTRY_SIZE + PLT_HEADER_SIZE; 2308 2309 /* If this symbol is not defined in a regular file, and we are 2310 not generating a shared library, then set the symbol to this 2311 location in the .plt. This is required to make function 2312 pointers compare as equal between the normal executable and 2313 the shared library. */ 2314 if (! bfd_link_pic (info) 2315 && !h->def_regular) 2316 { 2317 h->root.u.def.section = s; 2318 h->root.u.def.value = h->plt.offset; 2319 } 2320 2321 /* Make room for this entry. */ 2322 s->size += PLT_ENTRY_SIZE; 2323 2324 /* We also need to make an entry in the .got.plt section. */ 2325 htab->elf.sgotplt->size += GOT_ENTRY_SIZE (htab); 2326 2327 /* We also need to make an entry in the .rela.plt section. */ 2328 htab->elf.srelplt->size += TILEGX_ELF_RELA_BYTES (htab); 2329 } 2330 else 2331 { 2332 h->plt.offset = (bfd_vma) -1; 2333 h->needs_plt = 0; 2334 } 2335 } 2336 else 2337 { 2338 h->plt.offset = (bfd_vma) -1; 2339 h->needs_plt = 0; 2340 } 2341 2342 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE 2343 requiring no TLS entry. */ 2344 if (h->got.refcount > 0 2345 && !htab->disable_le_transition 2346 && bfd_link_executable (info) 2347 && h->dynindx == -1 2348 && tilegx_elf_hash_entry(h)->tls_type == GOT_TLS_IE) 2349 h->got.offset = (bfd_vma) -1; 2350 else if (h->got.refcount > 0) 2351 { 2352 asection *s; 2353 bfd_boolean dyn; 2354 int tls_type = tilegx_elf_hash_entry(h)->tls_type; 2355 2356 /* Make sure this symbol is output as a dynamic symbol. 2357 Undefined weak syms won't yet be marked as dynamic. */ 2358 if (h->dynindx == -1 2359 && !h->forced_local) 2360 { 2361 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2362 return FALSE; 2363 } 2364 2365 s = htab->elf.sgot; 2366 h->got.offset = s->size; 2367 s->size += TILEGX_ELF_WORD_BYTES (htab); 2368 /* TLS_GD entries need 2 consecutive GOT slots. */ 2369 if (tls_type == GOT_TLS_GD) 2370 s->size += TILEGX_ELF_WORD_BYTES (htab); 2371 dyn = htab->elf.dynamic_sections_created; 2372 /* TLS_IE needs one dynamic relocation, 2373 TLS_GD needs two if local symbol and two if global. */ 2374 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE) 2375 htab->elf.srelgot->size += 2 * TILEGX_ELF_RELA_BYTES (htab); 2376 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2377 bfd_link_pic (info), 2378 h)) 2379 htab->elf.srelgot->size += TILEGX_ELF_RELA_BYTES (htab); 2380 } 2381 else 2382 h->got.offset = (bfd_vma) -1; 2383 2384 eh = (struct tilegx_elf_link_hash_entry *) h; 2385 if (eh->dyn_relocs == NULL) 2386 return TRUE; 2387 2388 /* In the shared -Bsymbolic case, discard space allocated for 2389 dynamic pc-relative relocs against symbols which turn out to be 2390 defined in regular objects. For the normal shared case, discard 2391 space for pc-relative relocs that have become local due to symbol 2392 visibility changes. */ 2393 2394 if (bfd_link_pic (info)) 2395 { 2396 if (SYMBOL_CALLS_LOCAL (info, h)) 2397 { 2398 struct elf_dyn_relocs **pp; 2399 2400 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) 2401 { 2402 p->count -= p->pc_count; 2403 p->pc_count = 0; 2404 if (p->count == 0) 2405 *pp = p->next; 2406 else 2407 pp = &p->next; 2408 } 2409 } 2410 2411 /* Also discard relocs on undefined weak syms with non-default 2412 visibility. */ 2413 if (eh->dyn_relocs != NULL 2414 && h->root.type == bfd_link_hash_undefweak) 2415 { 2416 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT 2417 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) 2418 eh->dyn_relocs = NULL; 2419 2420 /* Make sure undefined weak symbols are output as a dynamic 2421 symbol in PIEs. */ 2422 else if (h->dynindx == -1 2423 && !h->forced_local) 2424 { 2425 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2426 return FALSE; 2427 } 2428 } 2429 } 2430 else 2431 { 2432 /* For the non-shared case, discard space for relocs against 2433 symbols which turn out to need copy relocs or are not 2434 dynamic. */ 2435 2436 if (!h->non_got_ref 2437 && ((h->def_dynamic 2438 && !h->def_regular) 2439 || (htab->elf.dynamic_sections_created 2440 && (h->root.type == bfd_link_hash_undefweak 2441 || h->root.type == bfd_link_hash_undefined)))) 2442 { 2443 /* Make sure this symbol is output as a dynamic symbol. 2444 Undefined weak syms won't yet be marked as dynamic. */ 2445 if (h->dynindx == -1 2446 && !h->forced_local) 2447 { 2448 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2449 return FALSE; 2450 } 2451 2452 /* If that succeeded, we know we'll be keeping all the 2453 relocs. */ 2454 if (h->dynindx != -1) 2455 goto keep; 2456 } 2457 2458 eh->dyn_relocs = NULL; 2459 2460 keep: ; 2461 } 2462 2463 /* Finally, allocate space. */ 2464 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2465 { 2466 asection *sreloc = elf_section_data (p->sec)->sreloc; 2467 sreloc->size += p->count * TILEGX_ELF_RELA_BYTES (htab); 2468 } 2469 2470 return TRUE; 2471 } 2472 2473 /* Set DF_TEXTREL if we find any dynamic relocs that apply to 2474 read-only sections. */ 2475 2476 static bfd_boolean 2477 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) 2478 { 2479 asection *sec; 2480 2481 if (h->root.type == bfd_link_hash_indirect) 2482 return TRUE; 2483 2484 sec = readonly_dynrelocs (h); 2485 if (sec != NULL) 2486 { 2487 struct bfd_link_info *info = (struct bfd_link_info *) info_p; 2488 2489 info->flags |= DF_TEXTREL; 2490 info->callbacks->minfo 2491 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), 2492 sec->owner, h->root.root.string, sec); 2493 2494 /* Not an error, just cut short the traversal. */ 2495 return FALSE; 2496 } 2497 return TRUE; 2498 } 2499 2500 /* Return true if the dynamic symbol for a given section should be 2501 omitted when creating a shared library. */ 2502 2503 bfd_boolean 2504 tilegx_elf_omit_section_dynsym (bfd *output_bfd, 2505 struct bfd_link_info *info, 2506 asection *p) 2507 { 2508 /* We keep the .got section symbol so that explicit relocations 2509 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode 2510 can be turned into relocations against the .got symbol. */ 2511 if (strcmp (p->name, ".got") == 0) 2512 return FALSE; 2513 2514 return _bfd_elf_omit_section_dynsym_default (output_bfd, info, p); 2515 } 2516 2517 bfd_boolean 2518 tilegx_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 2519 struct bfd_link_info *info) 2520 { 2521 struct tilegx_elf_link_hash_table *htab; 2522 bfd *dynobj; 2523 asection *s; 2524 bfd *ibfd; 2525 2526 htab = tilegx_elf_hash_table (info); 2527 BFD_ASSERT (htab != NULL); 2528 dynobj = htab->elf.dynobj; 2529 BFD_ASSERT (dynobj != NULL); 2530 2531 if (elf_hash_table (info)->dynamic_sections_created) 2532 { 2533 /* Set the contents of the .interp section to the interpreter. */ 2534 if (bfd_link_executable (info) && !info->nointerp) 2535 { 2536 s = bfd_get_linker_section (dynobj, ".interp"); 2537 BFD_ASSERT (s != NULL); 2538 s->size = strlen (htab->dynamic_interpreter) + 1; 2539 s->contents = (unsigned char *) htab->dynamic_interpreter; 2540 } 2541 } 2542 2543 /* Set up .got offsets for local syms, and space for local dynamic 2544 relocs. */ 2545 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) 2546 { 2547 bfd_signed_vma *local_got; 2548 bfd_signed_vma *end_local_got; 2549 char *local_tls_type; 2550 bfd_size_type locsymcount; 2551 Elf_Internal_Shdr *symtab_hdr; 2552 asection *srel; 2553 2554 if (! is_tilegx_elf (ibfd)) 2555 continue; 2556 2557 for (s = ibfd->sections; s != NULL; s = s->next) 2558 { 2559 struct elf_dyn_relocs *p; 2560 2561 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) 2562 { 2563 if (!bfd_is_abs_section (p->sec) 2564 && bfd_is_abs_section (p->sec->output_section)) 2565 { 2566 /* Input section has been discarded, either because 2567 it is a copy of a linkonce section or due to 2568 linker script /DISCARD/, so we'll be discarding 2569 the relocs too. */ 2570 } 2571 else if (p->count != 0) 2572 { 2573 srel = elf_section_data (p->sec)->sreloc; 2574 srel->size += p->count * TILEGX_ELF_RELA_BYTES (htab); 2575 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 2576 { 2577 info->flags |= DF_TEXTREL; 2578 2579 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"), 2580 p->sec->owner, p->sec); 2581 } 2582 } 2583 } 2584 } 2585 2586 local_got = elf_local_got_refcounts (ibfd); 2587 if (!local_got) 2588 continue; 2589 2590 symtab_hdr = &elf_symtab_hdr (ibfd); 2591 locsymcount = symtab_hdr->sh_info; 2592 end_local_got = local_got + locsymcount; 2593 local_tls_type = _bfd_tilegx_elf_local_got_tls_type (ibfd); 2594 s = htab->elf.sgot; 2595 srel = htab->elf.srelgot; 2596 for (; local_got < end_local_got; ++local_got, ++local_tls_type) 2597 { 2598 if (*local_got > 0) 2599 { 2600 *local_got = s->size; 2601 s->size += TILEGX_ELF_WORD_BYTES (htab); 2602 if (*local_tls_type == GOT_TLS_GD) 2603 s->size += TILEGX_ELF_WORD_BYTES (htab); 2604 if (bfd_link_pic (info) 2605 || *local_tls_type == GOT_TLS_GD 2606 || *local_tls_type == GOT_TLS_IE) 2607 srel->size += TILEGX_ELF_RELA_BYTES (htab); 2608 } 2609 else 2610 *local_got = (bfd_vma) -1; 2611 } 2612 } 2613 2614 /* Allocate global sym .plt and .got entries, and space for global 2615 sym dynamic relocs. */ 2616 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); 2617 2618 if (elf_hash_table (info)->dynamic_sections_created) 2619 { 2620 /* If the .got section is more than 0x8000 bytes, we add 2621 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16 2622 bit relocations have a greater chance of working. */ 2623 if (htab->elf.sgot->size >= 0x8000 2624 && elf_hash_table (info)->hgot->root.u.def.value == 0) 2625 elf_hash_table (info)->hgot->root.u.def.value = 0x8000; 2626 } 2627 2628 if (htab->elf.sgotplt) 2629 { 2630 struct elf_link_hash_entry *got; 2631 got = elf_link_hash_lookup (elf_hash_table (info), 2632 "_GLOBAL_OFFSET_TABLE_", 2633 FALSE, FALSE, FALSE); 2634 2635 /* Don't allocate .got.plt section if there are no GOT nor PLT 2636 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */ 2637 if ((got == NULL 2638 || !got->ref_regular_nonweak) 2639 && (htab->elf.sgotplt->size 2640 == (unsigned)GOTPLT_HEADER_SIZE (htab)) 2641 && (htab->elf.splt == NULL 2642 || htab->elf.splt->size == 0) 2643 && (htab->elf.sgot == NULL 2644 || (htab->elf.sgot->size 2645 == get_elf_backend_data (output_bfd)->got_header_size))) 2646 htab->elf.sgotplt->size = 0; 2647 } 2648 2649 /* The check_relocs and adjust_dynamic_symbol entry points have 2650 determined the sizes of the various dynamic sections. Allocate 2651 memory for them. */ 2652 for (s = dynobj->sections; s != NULL; s = s->next) 2653 { 2654 if ((s->flags & SEC_LINKER_CREATED) == 0) 2655 continue; 2656 2657 if (s == htab->elf.splt 2658 || s == htab->elf.sgot 2659 || s == htab->elf.sgotplt 2660 || s == htab->elf.sdynbss 2661 || s == htab->elf.sdynrelro) 2662 { 2663 /* Strip this section if we don't need it; see the 2664 comment below. */ 2665 } 2666 else if (strncmp (s->name, ".rela", 5) == 0) 2667 { 2668 if (s->size != 0) 2669 { 2670 /* We use the reloc_count field as a counter if we need 2671 to copy relocs into the output file. */ 2672 s->reloc_count = 0; 2673 } 2674 } 2675 else 2676 { 2677 /* It's not one of our sections. */ 2678 continue; 2679 } 2680 2681 if (s->size == 0) 2682 { 2683 /* If we don't need this section, strip it from the 2684 output file. This is mostly to handle .rela.bss and 2685 .rela.plt. We must create both sections in 2686 create_dynamic_sections, because they must be created 2687 before the linker maps input sections to output 2688 sections. The linker does that before 2689 adjust_dynamic_symbol is called, and it is that 2690 function which decides whether anything needs to go 2691 into these sections. */ 2692 s->flags |= SEC_EXCLUDE; 2693 continue; 2694 } 2695 2696 if ((s->flags & SEC_HAS_CONTENTS) == 0) 2697 continue; 2698 2699 /* Allocate memory for the section contents. Zero the memory 2700 for the benefit of .rela.plt, which has 4 unused entries 2701 at the beginning, and we don't want garbage. */ 2702 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); 2703 if (s->contents == NULL) 2704 return FALSE; 2705 } 2706 2707 if (elf_hash_table (info)->dynamic_sections_created) 2708 { 2709 /* Add some entries to the .dynamic section. We fill in the 2710 values later, in tilegx_elf_finish_dynamic_sections, but we 2711 must add the entries now so that we get the correct size for 2712 the .dynamic section. The DT_DEBUG entry is filled in by the 2713 dynamic linker and used by the debugger. */ 2714 #define add_dynamic_entry(TAG, VAL) \ 2715 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 2716 2717 if (bfd_link_executable (info)) 2718 { 2719 if (!add_dynamic_entry (DT_DEBUG, 0)) 2720 return FALSE; 2721 } 2722 2723 if (htab->elf.srelplt->size != 0) 2724 { 2725 if (!add_dynamic_entry (DT_PLTGOT, 0) 2726 || !add_dynamic_entry (DT_PLTRELSZ, 0) 2727 || !add_dynamic_entry (DT_PLTREL, DT_RELA) 2728 || !add_dynamic_entry (DT_JMPREL, 0)) 2729 return FALSE; 2730 } 2731 2732 if (!add_dynamic_entry (DT_RELA, 0) 2733 || !add_dynamic_entry (DT_RELASZ, 0) 2734 || !add_dynamic_entry (DT_RELAENT, TILEGX_ELF_RELA_BYTES (htab))) 2735 return FALSE; 2736 2737 /* If any dynamic relocs apply to a read-only section, 2738 then we need a DT_TEXTREL entry. */ 2739 if ((info->flags & DF_TEXTREL) == 0) 2740 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); 2741 2742 if (info->flags & DF_TEXTREL) 2743 { 2744 if (!add_dynamic_entry (DT_TEXTREL, 0)) 2745 return FALSE; 2746 } 2747 } 2748 #undef add_dynamic_entry 2749 2750 return TRUE; 2751 } 2752 2753 /* Return the base VMA address which should be subtracted from real addresses 2754 when resolving @dtpoff relocation. 2755 This is PT_TLS segment p_vaddr. */ 2756 2757 static bfd_vma 2758 dtpoff_base (struct bfd_link_info *info) 2759 { 2760 /* If tls_sec is NULL, we should have signalled an error already. */ 2761 if (elf_hash_table (info)->tls_sec == NULL) 2762 return 0; 2763 return elf_hash_table (info)->tls_sec->vma; 2764 } 2765 2766 /* Return the relocation value for @tpoff relocation. */ 2767 2768 static bfd_vma 2769 tpoff (struct bfd_link_info *info, bfd_vma address) 2770 { 2771 struct elf_link_hash_table *htab = elf_hash_table (info); 2772 2773 /* If tls_sec is NULL, we should have signalled an error already. */ 2774 if (htab->tls_sec == NULL) 2775 return 0; 2776 2777 return (address - htab->tls_sec->vma); 2778 } 2779 2780 /* Copy SIZE bits from FROM to TO at address ADDR. */ 2781 2782 static void 2783 tilegx_copy_bits (bfd_byte *addr, int from, int to, int size) 2784 { 2785 int i; 2786 for (i = 0; i < size; i++) 2787 { 2788 int from_byte = (from + i) / 8; 2789 int from_bit = (from + i) % 8; 2790 int to_byte = (to + i) / 8; 2791 int to_bit = (to + i) % 8; 2792 bfd_byte to_mask = 1 << to_bit; 2793 addr[to_byte] = (addr[to_byte] & ~to_mask) 2794 | ((addr[from_byte] >> from_bit << to_bit) & to_mask); 2795 } 2796 } 2797 2798 /* Replace the MASK bits in ADDR with those in INSN, for the next 2799 TILEGX_BUNDLE_SIZE_IN_BYTES bytes. */ 2800 2801 static void 2802 tilegx_replace_insn (bfd_byte *addr, const bfd_byte *mask, 2803 const bfd_byte *insn) 2804 { 2805 int i; 2806 for (i = 0; i < TILEGX_BUNDLE_SIZE_IN_BYTES; i++) 2807 { 2808 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]); 2809 } 2810 } 2811 2812 /* Mask to extract the bits corresponding to an instruction in a 2813 specific pipe of a bundle. */ 2814 static const bfd_byte insn_mask_X1[] = { 2815 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x3f 2816 }; 2817 2818 /* Mask to extract the bits corresponding to an instruction in a 2819 specific pipe of a bundle, minus the destination operand and the 2820 first source operand. */ 2821 static const bfd_byte insn_mask_X0_no_dest_no_srca[] = { 2822 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00 2823 }; 2824 2825 static const bfd_byte insn_mask_X1_no_dest_no_srca[] = { 2826 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x3f 2827 }; 2828 2829 static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = { 2830 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00 2831 }; 2832 static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = { 2833 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x3c 2834 }; 2835 2836 /* Mask to extract the bits corresponding to an instruction in a 2837 specific pipe of a bundle, minus the register operands. */ 2838 static const bfd_byte insn_mask_X0_no_operand[] = { 2839 0x00, 0x00, 0xfc, 0x7f, 0x00, 0x00, 0x00, 0x00 2840 }; 2841 2842 static const bfd_byte insn_mask_X1_no_operand[] = { 2843 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x3f 2844 }; 2845 2846 static const bfd_byte insn_mask_Y0_no_operand[] = { 2847 0x00, 0x00, 0x0c, 0x78, 0x00, 0x00, 0x00, 0x00 2848 }; 2849 2850 static const bfd_byte insn_mask_Y1_no_operand[] = { 2851 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x3c 2852 }; 2853 2854 /* Various instructions synthesized to support tls references. */ 2855 2856 /* ld r0, r0 in the X1 pipe, used for tls ie. */ 2857 static const bfd_byte insn_tls_ie_ld_X1[] = { 2858 0x00, 0x00, 0x00, 0x00, 0x00, 0xe8, 0x6a, 0x28 2859 }; 2860 2861 /* ld4s r0, r0 in the X1 pipe, used for tls ie. */ 2862 static const bfd_byte insn_tls_ie_ld4s_X1[] = { 2863 0x00, 0x00, 0x00, 0x00, 0x00, 0x98, 0x6a, 0x28 2864 }; 2865 2866 /* add r0, r0, tp in various pipes, used for tls ie. */ 2867 static const bfd_byte insn_tls_ie_add_X0X1[] = { 2868 0x00, 0x50, 0x0f, 0x50, 0x00, 0xa8, 0x07, 0x28 2869 }; 2870 static const bfd_byte insn_tls_ie_add_Y0Y1[] = { 2871 0x00, 0x50, 0x27, 0x2c, 0x00, 0xa8, 0x13, 0x9a 2872 }; 2873 2874 /* addx r0, r0, tp in various pipes, used for tls ie. */ 2875 static const bfd_byte insn_tls_ie_addx_X0X1[] = { 2876 0x00, 0x50, 0x0b, 0x50, 0x00, 0xa8, 0x05, 0x28 2877 }; 2878 static const bfd_byte insn_tls_ie_addx_Y0Y1[] = { 2879 0x00, 0x50, 0x03, 0x2c, 0x00, 0xa8, 0x01, 0x9a 2880 }; 2881 2882 /* move r0, r0 in various pipes, used for tls gd. */ 2883 static const bfd_byte insn_tls_gd_add_X0X1[] = { 2884 0x00, 0xf0, 0x07, 0x51, 0x00, 0xf8, 0x3b, 0x28 2885 }; 2886 static const bfd_byte insn_tls_gd_add_Y0Y1[] = { 2887 0x00, 0xf0, 0x0b, 0x54, 0x00, 0xf8, 0x05, 0xae 2888 }; 2889 2890 static const bfd_byte *insn_move_X0X1 = insn_tls_gd_add_X0X1; 2891 static const bfd_byte *insn_move_Y0Y1 = insn_tls_gd_add_Y0Y1; 2892 2893 static const bfd_byte *insn_add_X0X1 = insn_tls_ie_add_X0X1; 2894 static const bfd_byte *insn_add_Y0Y1 = insn_tls_ie_add_Y0Y1; 2895 2896 static const bfd_byte *insn_addx_X0X1 = insn_tls_ie_addx_X0X1; 2897 static const bfd_byte *insn_addx_Y0Y1 = insn_tls_ie_addx_Y0Y1; 2898 2899 /* Relocate an TILEGX ELF section. 2900 2901 The RELOCATE_SECTION function is called by the new ELF backend linker 2902 to handle the relocations for a section. 2903 2904 The relocs are always passed as Rela structures. 2905 2906 This function is responsible for adjusting the section contents as 2907 necessary, and (if generating a relocatable output file) adjusting 2908 the reloc addend as necessary. 2909 2910 This function does not have to worry about setting the reloc 2911 address or the reloc symbol index. 2912 2913 LOCAL_SYMS is a pointer to the swapped in local symbols. 2914 2915 LOCAL_SECTIONS is an array giving the section in the input file 2916 corresponding to the st_shndx field of each local symbol. 2917 2918 The global hash table entry for the global symbols can be found 2919 via elf_sym_hashes (input_bfd). 2920 2921 When generating relocatable output, this function must handle 2922 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 2923 going to be the section symbol corresponding to the output 2924 section, which means that the addend must be adjusted 2925 accordingly. */ 2926 2927 bfd_boolean 2928 tilegx_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, 2929 bfd *input_bfd, asection *input_section, 2930 bfd_byte *contents, Elf_Internal_Rela *relocs, 2931 Elf_Internal_Sym *local_syms, 2932 asection **local_sections) 2933 { 2934 struct tilegx_elf_link_hash_table *htab; 2935 Elf_Internal_Shdr *symtab_hdr; 2936 struct elf_link_hash_entry **sym_hashes; 2937 bfd_vma *local_got_offsets; 2938 bfd_vma got_base; 2939 asection *sreloc; 2940 Elf_Internal_Rela *rel; 2941 Elf_Internal_Rela *relend; 2942 int num_relocs; 2943 2944 htab = tilegx_elf_hash_table (info); 2945 BFD_ASSERT (htab != NULL); 2946 symtab_hdr = &elf_symtab_hdr (input_bfd); 2947 sym_hashes = elf_sym_hashes (input_bfd); 2948 local_got_offsets = elf_local_got_offsets (input_bfd); 2949 2950 if (elf_hash_table (info)->hgot == NULL) 2951 got_base = 0; 2952 else 2953 got_base = elf_hash_table (info)->hgot->root.u.def.value; 2954 2955 sreloc = elf_section_data (input_section)->sreloc; 2956 2957 rel = relocs; 2958 num_relocs = input_section->reloc_count; 2959 relend = relocs + num_relocs; 2960 for (; rel < relend; rel++) 2961 { 2962 int r_type, tls_type; 2963 bfd_boolean is_tls_iele, is_tls_le; 2964 reloc_howto_type *howto; 2965 unsigned long r_symndx; 2966 struct elf_link_hash_entry *h; 2967 Elf_Internal_Sym *sym; 2968 tilegx_create_func create_func; 2969 asection *sec; 2970 bfd_vma relocation; 2971 bfd_reloc_status_type r; 2972 const char *name; 2973 bfd_vma off; 2974 bfd_boolean is_plt = FALSE; 2975 bfd_boolean resolved_to_zero; 2976 bfd_boolean unresolved_reloc; 2977 2978 r_type = TILEGX_ELF_R_TYPE (rel->r_info); 2979 if (r_type == R_TILEGX_GNU_VTINHERIT 2980 || r_type == R_TILEGX_GNU_VTENTRY) 2981 continue; 2982 2983 if ((unsigned int)r_type >= ARRAY_SIZE (tilegx_elf_howto_table)) 2984 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type); 2985 2986 howto = tilegx_elf_howto_table + r_type; 2987 2988 /* This is a final link. */ 2989 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info); 2990 h = NULL; 2991 sym = NULL; 2992 sec = NULL; 2993 unresolved_reloc = FALSE; 2994 if (r_symndx < symtab_hdr->sh_info) 2995 { 2996 sym = local_syms + r_symndx; 2997 sec = local_sections[r_symndx]; 2998 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2999 } 3000 else 3001 { 3002 bfd_boolean warned ATTRIBUTE_UNUSED; 3003 bfd_boolean ignored ATTRIBUTE_UNUSED; 3004 3005 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 3006 r_symndx, symtab_hdr, sym_hashes, 3007 h, sec, relocation, 3008 unresolved_reloc, warned, ignored); 3009 if (warned) 3010 { 3011 /* To avoid generating warning messages about truncated 3012 relocations, set the relocation's address to be the same as 3013 the start of this section. */ 3014 if (input_section->output_section != NULL) 3015 relocation = input_section->output_section->vma; 3016 else 3017 relocation = 0; 3018 } 3019 } 3020 3021 if (sec != NULL && discarded_section (sec)) 3022 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 3023 rel, 1, relend, howto, 0, contents); 3024 3025 if (bfd_link_relocatable (info)) 3026 continue; 3027 3028 if (h != NULL) 3029 name = h->root.root.string; 3030 else 3031 { 3032 name = (bfd_elf_string_from_elf_section 3033 (input_bfd, symtab_hdr->sh_link, sym->st_name)); 3034 if (name == NULL || *name == '\0') 3035 name = bfd_section_name (input_bfd, sec); 3036 } 3037 3038 switch (r_type) 3039 { 3040 case R_TILEGX_TLS_GD_CALL: 3041 case R_TILEGX_IMM8_X0_TLS_GD_ADD: 3042 case R_TILEGX_IMM8_Y0_TLS_GD_ADD: 3043 case R_TILEGX_IMM8_X1_TLS_GD_ADD: 3044 case R_TILEGX_IMM8_Y1_TLS_GD_ADD: 3045 case R_TILEGX_IMM8_X0_TLS_ADD: 3046 case R_TILEGX_IMM8_Y0_TLS_ADD: 3047 case R_TILEGX_IMM8_X1_TLS_ADD: 3048 case R_TILEGX_IMM8_Y1_TLS_ADD: 3049 tls_type = GOT_UNKNOWN; 3050 if (h == NULL && local_got_offsets) 3051 tls_type = 3052 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx]; 3053 else if (h != NULL) 3054 tls_type = tilegx_elf_hash_entry(h)->tls_type; 3055 3056 is_tls_iele = (bfd_link_executable (info) || tls_type == GOT_TLS_IE); 3057 is_tls_le = is_tls_iele && (!input_section->sec_flg0 3058 && bfd_link_executable (info) 3059 && (h == NULL || h->dynindx == -1)); 3060 3061 if (r_type == R_TILEGX_TLS_GD_CALL) 3062 { 3063 if (is_tls_le) 3064 { 3065 /* GD -> LE */ 3066 tilegx_replace_insn (contents + rel->r_offset, 3067 insn_mask_X1, insn_move_X0X1); 3068 continue; 3069 } 3070 else if (is_tls_iele) 3071 { 3072 /* GD -> IE */ 3073 if (ABI_64_P (output_bfd)) 3074 tilegx_replace_insn (contents + rel->r_offset, 3075 insn_mask_X1, insn_tls_ie_ld_X1); 3076 else 3077 tilegx_replace_insn (contents + rel->r_offset, 3078 insn_mask_X1, insn_tls_ie_ld4s_X1); 3079 continue; 3080 } 3081 3082 /* GD -> GD */ 3083 h = (struct elf_link_hash_entry *) 3084 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE, 3085 FALSE, TRUE); 3086 BFD_ASSERT (h != NULL); 3087 r_type = R_TILEGX_JUMPOFF_X1_PLT; 3088 howto = tilegx_elf_howto_table + r_type; 3089 } 3090 else if (r_type == R_TILEGX_IMM8_X0_TLS_ADD 3091 || r_type == R_TILEGX_IMM8_X1_TLS_ADD 3092 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD 3093 || r_type == R_TILEGX_IMM8_Y1_TLS_ADD) 3094 { 3095 bfd_boolean is_pipe0 = 3096 (r_type == R_TILEGX_IMM8_X0_TLS_ADD 3097 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD); 3098 bfd_boolean is_X0X1 = 3099 (r_type == R_TILEGX_IMM8_X0_TLS_ADD 3100 || r_type == R_TILEGX_IMM8_X1_TLS_ADD); 3101 int dest_begin = is_pipe0 ? 0 : 31; 3102 int src_begin; 3103 const bfd_byte *insn; 3104 const bfd_byte *mask = NULL; 3105 3106 if (is_tls_le) 3107 { 3108 /* 1. copy dest operand into the first source operand. 3109 2. change the opcode to "move". */ 3110 src_begin = is_pipe0 ? 6 : 37; 3111 insn = is_X0X1 ? insn_move_X0X1 : insn_move_Y0Y1; 3112 3113 switch (r_type) 3114 { 3115 case R_TILEGX_IMM8_X0_TLS_ADD: 3116 mask = insn_mask_X0_no_dest_no_srca; 3117 break; 3118 case R_TILEGX_IMM8_X1_TLS_ADD: 3119 mask = insn_mask_X1_no_dest_no_srca; 3120 break; 3121 case R_TILEGX_IMM8_Y0_TLS_ADD: 3122 mask = insn_mask_Y0_no_dest_no_srca; 3123 break; 3124 case R_TILEGX_IMM8_Y1_TLS_ADD: 3125 mask = insn_mask_Y1_no_dest_no_srca; 3126 break; 3127 } 3128 } 3129 else 3130 { 3131 /* 1. copy dest operand into the second source operand. 3132 2. change the opcode to "add". */ 3133 src_begin = is_pipe0 ? 12 : 43; 3134 if (ABI_64_P (output_bfd)) 3135 insn = is_X0X1 ? insn_add_X0X1 : insn_add_Y0Y1; 3136 else 3137 insn = is_X0X1 ? insn_addx_X0X1 : insn_addx_Y0Y1; 3138 3139 switch (r_type) 3140 { 3141 case R_TILEGX_IMM8_X0_TLS_ADD: 3142 mask = insn_mask_X0_no_operand; 3143 break; 3144 case R_TILEGX_IMM8_X1_TLS_ADD: 3145 mask = insn_mask_X1_no_operand; 3146 break; 3147 case R_TILEGX_IMM8_Y0_TLS_ADD: 3148 mask = insn_mask_Y0_no_operand; 3149 break; 3150 case R_TILEGX_IMM8_Y1_TLS_ADD: 3151 mask = insn_mask_Y1_no_operand; 3152 break; 3153 } 3154 } 3155 3156 tilegx_copy_bits (contents + rel->r_offset, dest_begin, 3157 src_begin, 6); 3158 tilegx_replace_insn (contents + rel->r_offset, mask, insn); 3159 3160 continue; 3161 } 3162 else 3163 { 3164 const bfd_byte *mask = NULL; 3165 const bfd_byte *add_insn = NULL; 3166 bfd_boolean is_64bit = ABI_64_P (output_bfd); 3167 3168 switch (r_type) 3169 { 3170 case R_TILEGX_IMM8_X0_TLS_GD_ADD: 3171 add_insn = is_tls_iele 3172 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1) 3173 : insn_tls_gd_add_X0X1; 3174 mask = insn_mask_X0_no_dest_no_srca; 3175 break; 3176 case R_TILEGX_IMM8_X1_TLS_GD_ADD: 3177 add_insn = is_tls_iele 3178 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1) 3179 : insn_tls_gd_add_X0X1; 3180 mask = insn_mask_X1_no_dest_no_srca; 3181 break; 3182 case R_TILEGX_IMM8_Y0_TLS_GD_ADD: 3183 add_insn = is_tls_iele 3184 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1) 3185 : insn_tls_gd_add_Y0Y1; 3186 mask = insn_mask_Y0_no_dest_no_srca; 3187 break; 3188 case R_TILEGX_IMM8_Y1_TLS_GD_ADD: 3189 add_insn = is_tls_iele 3190 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1) 3191 : insn_tls_gd_add_Y0Y1; 3192 mask = insn_mask_Y1_no_dest_no_srca; 3193 break; 3194 } 3195 3196 tilegx_replace_insn (contents + rel->r_offset, mask, add_insn); 3197 3198 continue; 3199 } 3200 break; 3201 case R_TILEGX_TLS_IE_LOAD: 3202 if (!input_section->sec_flg0 3203 && bfd_link_executable (info) 3204 && (h == NULL || h->dynindx == -1)) 3205 { 3206 /* IE -> LE */ 3207 tilegx_replace_insn (contents + rel->r_offset, 3208 insn_mask_X1_no_dest_no_srca, 3209 insn_move_X0X1); 3210 } 3211 else 3212 { 3213 /* IE -> IE */ 3214 if (ABI_64_P (output_bfd)) 3215 tilegx_replace_insn (contents + rel->r_offset, 3216 insn_mask_X1_no_dest_no_srca, 3217 insn_tls_ie_ld_X1); 3218 else 3219 tilegx_replace_insn (contents + rel->r_offset, 3220 insn_mask_X1_no_dest_no_srca, 3221 insn_tls_ie_ld4s_X1); 3222 } 3223 continue; 3224 break; 3225 default: 3226 break; 3227 } 3228 3229 resolved_to_zero = (h != NULL 3230 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); 3231 3232 switch (r_type) 3233 { 3234 case R_TILEGX_IMM16_X0_HW0_GOT: 3235 case R_TILEGX_IMM16_X1_HW0_GOT: 3236 case R_TILEGX_IMM16_X0_HW0_LAST_GOT: 3237 case R_TILEGX_IMM16_X1_HW0_LAST_GOT: 3238 case R_TILEGX_IMM16_X0_HW1_LAST_GOT: 3239 case R_TILEGX_IMM16_X1_HW1_LAST_GOT: 3240 /* Relocation is to the entry for this symbol in the global 3241 offset table. */ 3242 if (htab->elf.sgot == NULL) 3243 abort (); 3244 3245 if (h != NULL) 3246 { 3247 bfd_boolean dyn; 3248 3249 off = h->got.offset; 3250 BFD_ASSERT (off != (bfd_vma) -1); 3251 dyn = elf_hash_table (info)->dynamic_sections_created; 3252 3253 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 3254 bfd_link_pic (info), 3255 h) 3256 || (bfd_link_pic (info) 3257 && SYMBOL_REFERENCES_LOCAL (info, h))) 3258 { 3259 /* This is actually a static link, or it is a 3260 -Bsymbolic link and the symbol is defined 3261 locally, or the symbol was forced to be local 3262 because of a version file. We must initialize 3263 this entry in the global offset table. Since the 3264 offset must always be a multiple 3265 of 8 for 64-bit, we use the least significant bit 3266 to record whether we have initialized it already. 3267 3268 When doing a dynamic link, we create a .rela.got 3269 relocation entry to initialize the value. This 3270 is done in the finish_dynamic_symbol routine. */ 3271 if ((off & 1) != 0) 3272 off &= ~1; 3273 else 3274 { 3275 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation, 3276 htab->elf.sgot->contents + off); 3277 h->got.offset |= 1; 3278 } 3279 } 3280 else 3281 unresolved_reloc = FALSE; 3282 } 3283 else 3284 { 3285 BFD_ASSERT (local_got_offsets != NULL 3286 && local_got_offsets[r_symndx] != (bfd_vma) -1); 3287 3288 off = local_got_offsets[r_symndx]; 3289 3290 /* The offset must always be a multiple of 8 on 64-bit. 3291 We use the least significant bit to record 3292 whether we have already processed this entry. */ 3293 if ((off & 1) != 0) 3294 off &= ~1; 3295 else 3296 { 3297 if (bfd_link_pic (info)) 3298 { 3299 asection *s; 3300 Elf_Internal_Rela outrel; 3301 3302 /* We need to generate a R_TILEGX_RELATIVE reloc 3303 for the dynamic linker. */ 3304 s = htab->elf.srelgot; 3305 BFD_ASSERT (s != NULL); 3306 3307 outrel.r_offset = (htab->elf.sgot->output_section->vma 3308 + htab->elf.sgot->output_offset 3309 + off); 3310 outrel.r_info = 3311 TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE); 3312 outrel.r_addend = relocation; 3313 relocation = 0; 3314 tilegx_elf_append_rela (output_bfd, s, &outrel); 3315 } 3316 3317 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation, 3318 htab->elf.sgot->contents + off); 3319 local_got_offsets[r_symndx] |= 1; 3320 } 3321 } 3322 relocation = off - got_base; 3323 break; 3324 3325 case R_TILEGX_JUMPOFF_X1_PLT: 3326 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL: 3327 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL: 3328 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL: 3329 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL: 3330 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL: 3331 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL: 3332 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL: 3333 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL: 3334 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL: 3335 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL: 3336 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL: 3337 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL: 3338 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL: 3339 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL: 3340 /* Relocation is to the entry for this symbol in the 3341 procedure linkage table. */ 3342 BFD_ASSERT (h != NULL); 3343 3344 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL) 3345 { 3346 /* We didn't make a PLT entry for this symbol. This 3347 happens when statically linking PIC code, or when 3348 using -Bsymbolic. */ 3349 break; 3350 } 3351 3352 relocation = (htab->elf.splt->output_section->vma 3353 + htab->elf.splt->output_offset 3354 + h->plt.offset); 3355 unresolved_reloc = FALSE; 3356 break; 3357 3358 case R_TILEGX_64_PCREL: 3359 case R_TILEGX_32_PCREL: 3360 case R_TILEGX_16_PCREL: 3361 case R_TILEGX_8_PCREL: 3362 case R_TILEGX_IMM16_X0_HW0_PCREL: 3363 case R_TILEGX_IMM16_X1_HW0_PCREL: 3364 case R_TILEGX_IMM16_X0_HW1_PCREL: 3365 case R_TILEGX_IMM16_X1_HW1_PCREL: 3366 case R_TILEGX_IMM16_X0_HW2_PCREL: 3367 case R_TILEGX_IMM16_X1_HW2_PCREL: 3368 case R_TILEGX_IMM16_X0_HW3_PCREL: 3369 case R_TILEGX_IMM16_X1_HW3_PCREL: 3370 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL: 3371 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL: 3372 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL: 3373 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL: 3374 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL: 3375 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL: 3376 if (h != NULL 3377 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 3378 break; 3379 /* Fall through. */ 3380 case R_TILEGX_64: 3381 case R_TILEGX_32: 3382 case R_TILEGX_16: 3383 case R_TILEGX_8: 3384 case R_TILEGX_HW0: 3385 case R_TILEGX_HW1: 3386 case R_TILEGX_HW2: 3387 case R_TILEGX_HW3: 3388 case R_TILEGX_HW0_LAST: 3389 case R_TILEGX_HW1_LAST: 3390 case R_TILEGX_HW2_LAST: 3391 case R_TILEGX_COPY: 3392 case R_TILEGX_GLOB_DAT: 3393 case R_TILEGX_JMP_SLOT: 3394 case R_TILEGX_RELATIVE: 3395 case R_TILEGX_BROFF_X1: 3396 case R_TILEGX_JUMPOFF_X1: 3397 case R_TILEGX_IMM8_X0: 3398 case R_TILEGX_IMM8_Y0: 3399 case R_TILEGX_IMM8_X1: 3400 case R_TILEGX_IMM8_Y1: 3401 case R_TILEGX_DEST_IMM8_X1: 3402 case R_TILEGX_MT_IMM14_X1: 3403 case R_TILEGX_MF_IMM14_X1: 3404 case R_TILEGX_MMSTART_X0: 3405 case R_TILEGX_MMEND_X0: 3406 case R_TILEGX_SHAMT_X0: 3407 case R_TILEGX_SHAMT_X1: 3408 case R_TILEGX_SHAMT_Y0: 3409 case R_TILEGX_SHAMT_Y1: 3410 case R_TILEGX_IMM16_X0_HW0: 3411 case R_TILEGX_IMM16_X1_HW0: 3412 case R_TILEGX_IMM16_X0_HW1: 3413 case R_TILEGX_IMM16_X1_HW1: 3414 case R_TILEGX_IMM16_X0_HW2: 3415 case R_TILEGX_IMM16_X1_HW2: 3416 case R_TILEGX_IMM16_X0_HW3: 3417 case R_TILEGX_IMM16_X1_HW3: 3418 case R_TILEGX_IMM16_X0_HW0_LAST: 3419 case R_TILEGX_IMM16_X1_HW0_LAST: 3420 case R_TILEGX_IMM16_X0_HW1_LAST: 3421 case R_TILEGX_IMM16_X1_HW1_LAST: 3422 case R_TILEGX_IMM16_X0_HW2_LAST: 3423 case R_TILEGX_IMM16_X1_HW2_LAST: 3424 if ((input_section->flags & SEC_ALLOC) == 0) 3425 break; 3426 3427 if ((bfd_link_pic (info) 3428 && (h == NULL 3429 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 3430 && !resolved_to_zero) 3431 || h->root.type != bfd_link_hash_undefweak) 3432 && (! howto->pc_relative 3433 || !SYMBOL_CALLS_LOCAL (info, h))) 3434 || (!bfd_link_pic (info) 3435 && h != NULL 3436 && h->dynindx != -1 3437 && !h->non_got_ref 3438 && ((h->def_dynamic 3439 && !h->def_regular) 3440 || h->root.type == bfd_link_hash_undefweak 3441 || h->root.type == bfd_link_hash_undefined))) 3442 { 3443 Elf_Internal_Rela outrel; 3444 bfd_boolean skip, relocate = FALSE; 3445 3446 /* When generating a shared object, these relocations 3447 are copied into the output file to be resolved at run 3448 time. */ 3449 3450 BFD_ASSERT (sreloc != NULL); 3451 3452 skip = FALSE; 3453 3454 outrel.r_offset = 3455 _bfd_elf_section_offset (output_bfd, info, input_section, 3456 rel->r_offset); 3457 if (outrel.r_offset == (bfd_vma) -1) 3458 skip = TRUE; 3459 else if (outrel.r_offset == (bfd_vma) -2) 3460 skip = TRUE, relocate = TRUE; 3461 outrel.r_offset += (input_section->output_section->vma 3462 + input_section->output_offset); 3463 3464 switch (r_type) 3465 { 3466 case R_TILEGX_64_PCREL: 3467 case R_TILEGX_32_PCREL: 3468 case R_TILEGX_16_PCREL: 3469 case R_TILEGX_8_PCREL: 3470 /* If the symbol is not dynamic, we should not keep 3471 a dynamic relocation. But an .rela.* slot has been 3472 allocated for it, output R_TILEGX_NONE. 3473 FIXME: Add code tracking needed dynamic relocs as 3474 e.g. i386 has. */ 3475 if (h->dynindx == -1) 3476 skip = TRUE, relocate = TRUE; 3477 break; 3478 } 3479 3480 if (skip) 3481 memset (&outrel, 0, sizeof outrel); 3482 /* h->dynindx may be -1 if the symbol was marked to 3483 become local. */ 3484 else if (h != NULL && 3485 h->dynindx != -1 3486 && (! is_plt 3487 || !bfd_link_pic (info) 3488 || !SYMBOLIC_BIND (info, h) 3489 || !h->def_regular)) 3490 { 3491 BFD_ASSERT (h->dynindx != -1); 3492 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, h->dynindx, r_type); 3493 outrel.r_addend = rel->r_addend; 3494 } 3495 else 3496 { 3497 if (r_type == R_TILEGX_32 || r_type == R_TILEGX_64) 3498 { 3499 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, 3500 R_TILEGX_RELATIVE); 3501 outrel.r_addend = relocation + rel->r_addend; 3502 } 3503 else 3504 { 3505 long indx; 3506 3507 outrel.r_addend = relocation + rel->r_addend; 3508 3509 if (is_plt) 3510 sec = htab->elf.splt; 3511 3512 if (bfd_is_abs_section (sec)) 3513 indx = 0; 3514 else if (sec == NULL || sec->owner == NULL) 3515 { 3516 bfd_set_error (bfd_error_bad_value); 3517 return FALSE; 3518 } 3519 else 3520 { 3521 asection *osec; 3522 3523 /* We are turning this relocation into one 3524 against a section symbol. It would be 3525 proper to subtract the symbol's value, 3526 osec->vma, from the emitted reloc addend, 3527 but ld.so expects buggy relocs. */ 3528 osec = sec->output_section; 3529 indx = elf_section_data (osec)->dynindx; 3530 3531 if (indx == 0) 3532 { 3533 osec = htab->elf.text_index_section; 3534 indx = elf_section_data (osec)->dynindx; 3535 } 3536 3537 /* FIXME: we really should be able to link non-pic 3538 shared libraries. */ 3539 if (indx == 0) 3540 { 3541 BFD_FAIL (); 3542 _bfd_error_handler 3543 (_("%pB: probably compiled without -fPIC?"), 3544 input_bfd); 3545 bfd_set_error (bfd_error_bad_value); 3546 return FALSE; 3547 } 3548 } 3549 3550 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, indx, 3551 r_type); 3552 } 3553 } 3554 3555 tilegx_elf_append_rela (output_bfd, sreloc, &outrel); 3556 3557 /* This reloc will be computed at runtime, so there's no 3558 need to do anything now. */ 3559 if (! relocate) 3560 continue; 3561 } 3562 break; 3563 3564 case R_TILEGX_IMM16_X0_HW0_TLS_LE: 3565 case R_TILEGX_IMM16_X1_HW0_TLS_LE: 3566 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE: 3567 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE: 3568 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE: 3569 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE: 3570 if (!bfd_link_executable (info)) 3571 { 3572 Elf_Internal_Rela outrel; 3573 bfd_boolean skip; 3574 3575 BFD_ASSERT (sreloc != NULL); 3576 skip = FALSE; 3577 outrel.r_offset = 3578 _bfd_elf_section_offset (output_bfd, info, input_section, 3579 rel->r_offset); 3580 if (outrel.r_offset == (bfd_vma) -1) 3581 skip = TRUE; 3582 else if (outrel.r_offset == (bfd_vma) -2) 3583 skip = TRUE; 3584 outrel.r_offset += (input_section->output_section->vma 3585 + input_section->output_offset); 3586 if (skip) 3587 memset (&outrel, 0, sizeof outrel); 3588 else 3589 { 3590 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, r_type); 3591 outrel.r_addend = relocation - dtpoff_base (info) 3592 + rel->r_addend; 3593 } 3594 3595 tilegx_elf_append_rela (output_bfd, sreloc, &outrel); 3596 continue; 3597 } 3598 relocation = tpoff (info, relocation); 3599 break; 3600 3601 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 3602 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 3603 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 3604 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 3605 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 3606 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 3607 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 3608 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 3609 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 3610 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 3611 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 3612 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 3613 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL, 3614 input_section->sec_flg0); 3615 tls_type = GOT_UNKNOWN; 3616 if (h == NULL && local_got_offsets) 3617 tls_type = 3618 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx]; 3619 else if (h != NULL) 3620 { 3621 tls_type = tilegx_elf_hash_entry(h)->tls_type; 3622 if (bfd_link_executable (info) 3623 && h->dynindx == -1 3624 && tls_type == GOT_TLS_IE) 3625 r_type = (!input_section->sec_flg0 3626 ? tilegx_tls_translate_to_le (r_type) 3627 : tilegx_tls_translate_to_ie (r_type)); 3628 } 3629 3630 if (tls_type == GOT_TLS_IE) 3631 r_type = tilegx_tls_translate_to_ie (r_type); 3632 3633 if (r_type == R_TILEGX_IMM16_X0_HW0_TLS_LE 3634 || r_type == R_TILEGX_IMM16_X1_HW0_TLS_LE 3635 || r_type == R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE 3636 || r_type == R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE 3637 || r_type == R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE 3638 || r_type == R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE) 3639 { 3640 relocation = tpoff (info, relocation); 3641 break; 3642 } 3643 3644 if (h != NULL) 3645 { 3646 off = h->got.offset; 3647 h->got.offset |= 1; 3648 } 3649 else 3650 { 3651 BFD_ASSERT (local_got_offsets != NULL); 3652 off = local_got_offsets[r_symndx]; 3653 local_got_offsets[r_symndx] |= 1; 3654 } 3655 3656 if (htab->elf.sgot == NULL) 3657 abort (); 3658 3659 if ((off & 1) != 0) 3660 off &= ~1; 3661 else 3662 { 3663 Elf_Internal_Rela outrel; 3664 int indx = 0; 3665 bfd_boolean need_relocs = FALSE; 3666 3667 if (htab->elf.srelgot == NULL) 3668 abort (); 3669 3670 if (h != NULL) 3671 { 3672 bfd_boolean dyn; 3673 dyn = htab->elf.dynamic_sections_created; 3674 3675 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 3676 bfd_link_pic (info), 3677 h) 3678 && (!bfd_link_pic (info) 3679 || !SYMBOL_REFERENCES_LOCAL (info, h))) 3680 { 3681 indx = h->dynindx; 3682 } 3683 } 3684 3685 /* The GOT entries have not been initialized yet. Do it 3686 now, and emit any relocations. */ 3687 if ((bfd_link_pic (info) || indx != 0) 3688 && (h == NULL 3689 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 3690 || h->root.type != bfd_link_hash_undefweak)) 3691 need_relocs = TRUE; 3692 3693 switch (r_type) 3694 { 3695 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 3696 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 3697 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 3698 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 3699 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 3700 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 3701 if (need_relocs) { 3702 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 3703 htab->elf.sgot->contents + off); 3704 outrel.r_offset = (htab->elf.sgot->output_section->vma 3705 + htab->elf.sgot->output_offset + off); 3706 outrel.r_addend = 0; 3707 if (indx == 0) 3708 outrel.r_addend = relocation - dtpoff_base (info); 3709 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx, 3710 TILEGX_ELF_TPOFF_RELOC (htab)); 3711 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); 3712 } else { 3713 TILEGX_ELF_PUT_WORD (htab, output_bfd, 3714 tpoff (info, relocation), 3715 htab->elf.sgot->contents + off); 3716 } 3717 break; 3718 3719 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 3720 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 3721 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 3722 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 3723 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 3724 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 3725 if (need_relocs) { 3726 outrel.r_offset = (htab->elf.sgot->output_section->vma 3727 + htab->elf.sgot->output_offset + off); 3728 outrel.r_addend = 0; 3729 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx, 3730 TILEGX_ELF_DTPMOD_RELOC (htab)); 3731 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 3732 htab->elf.sgot->contents + off); 3733 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); 3734 if (indx == 0) 3735 { 3736 BFD_ASSERT (! unresolved_reloc); 3737 TILEGX_ELF_PUT_WORD (htab, output_bfd, 3738 relocation - dtpoff_base (info), 3739 (htab->elf.sgot->contents + off + 3740 TILEGX_ELF_WORD_BYTES (htab))); 3741 } 3742 else 3743 { 3744 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 3745 (htab->elf.sgot->contents + off + 3746 TILEGX_ELF_WORD_BYTES (htab))); 3747 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx, 3748 TILEGX_ELF_DTPOFF_RELOC (htab)); 3749 outrel.r_offset += TILEGX_ELF_WORD_BYTES (htab); 3750 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); 3751 } 3752 } 3753 3754 else { 3755 /* If we are not emitting relocations for a 3756 general dynamic reference, then we must be in a 3757 static link or an executable link with the 3758 symbol binding locally. Mark it as belonging 3759 to module 1, the executable. */ 3760 TILEGX_ELF_PUT_WORD (htab, output_bfd, 1, 3761 htab->elf.sgot->contents + off ); 3762 TILEGX_ELF_PUT_WORD (htab, output_bfd, 3763 relocation - dtpoff_base (info), 3764 htab->elf.sgot->contents + off + 3765 TILEGX_ELF_WORD_BYTES (htab)); 3766 } 3767 break; 3768 } 3769 } 3770 3771 if (off >= (bfd_vma) -2) 3772 abort (); 3773 3774 relocation = off - got_base; 3775 unresolved_reloc = FALSE; 3776 howto = tilegx_elf_howto_table + r_type; 3777 break; 3778 3779 default: 3780 break; 3781 } 3782 3783 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections 3784 because such sections are not SEC_ALLOC and thus ld.so will 3785 not process them. */ 3786 if (unresolved_reloc 3787 && !((input_section->flags & SEC_DEBUGGING) != 0 3788 && h->def_dynamic) 3789 && _bfd_elf_section_offset (output_bfd, info, input_section, 3790 rel->r_offset) != (bfd_vma) -1) 3791 _bfd_error_handler 3792 /* xgettext:c-format */ 3793 (_("%pB(%pA+%#" PRIx64 "): " 3794 "unresolvable %s relocation against symbol `%s'"), 3795 input_bfd, 3796 input_section, 3797 (uint64_t) rel->r_offset, 3798 howto->name, 3799 h->root.root.string); 3800 3801 r = bfd_reloc_continue; 3802 3803 /* Get the operand creation function, if any. */ 3804 create_func = reloc_to_create_func[r_type]; 3805 if (create_func == NULL) 3806 { 3807 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3808 contents, rel->r_offset, 3809 relocation, rel->r_addend); 3810 } 3811 else 3812 { 3813 if (howto->pc_relative) 3814 { 3815 relocation -= 3816 input_section->output_section->vma + input_section->output_offset; 3817 if (howto->pcrel_offset) 3818 relocation -= rel->r_offset; 3819 } 3820 3821 bfd_byte *data; 3822 3823 /* Add the relocation addend if any to the final target value */ 3824 relocation += rel->r_addend; 3825 3826 /* Do basic range checking */ 3827 r = bfd_check_overflow (howto->complain_on_overflow, 3828 howto->bitsize, 3829 howto->rightshift, 3830 TILEGX_ELF_WORD_BYTES (htab) * 8, 3831 relocation); 3832 3833 /* 3834 * Write the relocated value out into the raw section data. 3835 * Don't put a relocation out in the .rela section. 3836 */ 3837 tilegx_bundle_bits mask = create_func(-1); 3838 tilegx_bundle_bits value = create_func(relocation >> howto->rightshift); 3839 3840 /* Only touch bytes while the mask is not 0, so we 3841 don't write to out of bounds memory if this is actually 3842 a 16-bit switch instruction. */ 3843 for (data = contents + rel->r_offset; mask != 0; data++) 3844 { 3845 bfd_byte byte_mask = (bfd_byte)mask; 3846 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask); 3847 mask >>= 8; 3848 value >>= 8; 3849 } 3850 } 3851 3852 if (r != bfd_reloc_ok) 3853 { 3854 const char *msg = NULL; 3855 3856 switch (r) 3857 { 3858 case bfd_reloc_overflow: 3859 (*info->callbacks->reloc_overflow) 3860 (info, (h ? &h->root : NULL), name, howto->name, 3861 (bfd_vma) 0, input_bfd, input_section, rel->r_offset); 3862 break; 3863 3864 case bfd_reloc_undefined: 3865 (*info->callbacks->undefined_symbol) 3866 (info, name, input_bfd, input_section, rel->r_offset, TRUE); 3867 break; 3868 3869 case bfd_reloc_outofrange: 3870 msg = _("internal error: out of range error"); 3871 break; 3872 3873 case bfd_reloc_notsupported: 3874 msg = _("internal error: unsupported relocation error"); 3875 break; 3876 3877 case bfd_reloc_dangerous: 3878 msg = _("internal error: dangerous relocation"); 3879 break; 3880 3881 default: 3882 msg = _("internal error: unknown error"); 3883 break; 3884 } 3885 3886 if (msg) 3887 (*info->callbacks->warning) (info, msg, name, input_bfd, 3888 input_section, rel->r_offset); 3889 } 3890 } 3891 3892 return TRUE; 3893 } 3894 3895 /* Finish up dynamic symbol handling. We set the contents of various 3896 dynamic sections here. */ 3897 3898 bfd_boolean 3899 tilegx_elf_finish_dynamic_symbol (bfd *output_bfd, 3900 struct bfd_link_info *info, 3901 struct elf_link_hash_entry *h, 3902 Elf_Internal_Sym *sym) 3903 { 3904 struct tilegx_elf_link_hash_table *htab; 3905 3906 htab = tilegx_elf_hash_table (info); 3907 BFD_ASSERT (htab != NULL); 3908 3909 if (h->plt.offset != (bfd_vma) -1) 3910 { 3911 asection *splt; 3912 asection *srela; 3913 asection *sgotplt; 3914 Elf_Internal_Rela rela; 3915 bfd_byte *loc; 3916 bfd_vma r_offset; 3917 const struct elf_backend_data *bed = get_elf_backend_data (output_bfd); 3918 3919 3920 int rela_index; 3921 3922 /* This symbol has an entry in the PLT. Set it up. */ 3923 3924 BFD_ASSERT (h->dynindx != -1); 3925 3926 splt = htab->elf.splt; 3927 srela = htab->elf.srelplt; 3928 sgotplt = htab->elf.sgotplt; 3929 3930 if (splt == NULL || srela == NULL) 3931 abort (); 3932 3933 /* Fill in the entry in the procedure linkage table. */ 3934 rela_index = tilegx_plt_entry_build (output_bfd, htab, splt, sgotplt, 3935 h->plt.offset, &r_offset); 3936 3937 /* Fill in the entry in the global offset table, which initially points 3938 to the beginning of the plt. */ 3939 TILEGX_ELF_PUT_WORD (htab, output_bfd, 3940 splt->output_section->vma + splt->output_offset, 3941 sgotplt->contents + r_offset); 3942 3943 /* Fill in the entry in the .rela.plt section. */ 3944 rela.r_offset = (sgotplt->output_section->vma 3945 + sgotplt->output_offset 3946 + r_offset); 3947 rela.r_addend = 0; 3948 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_JMP_SLOT); 3949 3950 loc = srela->contents + rela_index * TILEGX_ELF_RELA_BYTES (htab); 3951 bed->s->swap_reloca_out (output_bfd, &rela, loc); 3952 3953 if (!h->def_regular) 3954 { 3955 /* Mark the symbol as undefined, rather than as defined in 3956 the .plt section. Leave the value alone. */ 3957 sym->st_shndx = SHN_UNDEF; 3958 /* If the symbol is weak, we do need to clear the value. 3959 Otherwise, the PLT entry would provide a definition for 3960 the symbol even if the symbol wasn't defined anywhere, 3961 and so the symbol would never be NULL. */ 3962 if (!h->ref_regular_nonweak) 3963 sym->st_value = 0; 3964 } 3965 } 3966 3967 if (h->got.offset != (bfd_vma) -1 3968 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_GD 3969 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_IE) 3970 { 3971 asection *sgot; 3972 asection *srela; 3973 Elf_Internal_Rela rela; 3974 3975 /* This symbol has an entry in the GOT. Set it up. */ 3976 3977 sgot = htab->elf.sgot; 3978 srela = htab->elf.srelgot; 3979 BFD_ASSERT (sgot != NULL && srela != NULL); 3980 3981 rela.r_offset = (sgot->output_section->vma 3982 + sgot->output_offset 3983 + (h->got.offset &~ (bfd_vma) 1)); 3984 3985 /* If this is a -Bsymbolic link, and the symbol is defined 3986 locally, we just want to emit a RELATIVE reloc. Likewise if 3987 the symbol was forced to be local because of a version file. 3988 The entry in the global offset table will already have been 3989 initialized in the relocate_section function. */ 3990 if (bfd_link_pic (info) 3991 && (info->symbolic || h->dynindx == -1) 3992 && h->def_regular) 3993 { 3994 asection *sec = h->root.u.def.section; 3995 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE); 3996 rela.r_addend = (h->root.u.def.value 3997 + sec->output_section->vma 3998 + sec->output_offset); 3999 } 4000 else 4001 { 4002 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_GLOB_DAT); 4003 rela.r_addend = 0; 4004 } 4005 4006 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 4007 sgot->contents + (h->got.offset & ~(bfd_vma) 1)); 4008 tilegx_elf_append_rela (output_bfd, srela, &rela); 4009 } 4010 4011 if (h->needs_copy) 4012 { 4013 asection *s; 4014 Elf_Internal_Rela rela; 4015 4016 /* This symbols needs a copy reloc. Set it up. */ 4017 BFD_ASSERT (h->dynindx != -1); 4018 4019 if (h->root.u.def.section == htab->elf.sdynrelro) 4020 s = htab->elf.sreldynrelro; 4021 else 4022 s = htab->elf.srelbss; 4023 BFD_ASSERT (s != NULL); 4024 4025 rela.r_offset = (h->root.u.def.value 4026 + h->root.u.def.section->output_section->vma 4027 + h->root.u.def.section->output_offset); 4028 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_COPY); 4029 rela.r_addend = 0; 4030 tilegx_elf_append_rela (output_bfd, s, &rela); 4031 } 4032 4033 /* Mark some specially defined symbols as absolute. */ 4034 if (h == htab->elf.hdynamic 4035 || (h == htab->elf.hgot || h == htab->elf.hplt)) 4036 sym->st_shndx = SHN_ABS; 4037 4038 return TRUE; 4039 } 4040 4041 /* Finish up the dynamic sections. */ 4042 4043 static bfd_boolean 4044 tilegx_finish_dyn (bfd *output_bfd, struct bfd_link_info *info, 4045 bfd *dynobj, asection *sdyn, 4046 asection *splt ATTRIBUTE_UNUSED) 4047 { 4048 struct tilegx_elf_link_hash_table *htab; 4049 const struct elf_backend_data *bed; 4050 bfd_byte *dyncon, *dynconend; 4051 size_t dynsize; 4052 4053 htab = tilegx_elf_hash_table (info); 4054 BFD_ASSERT (htab != NULL); 4055 bed = get_elf_backend_data (output_bfd); 4056 dynsize = bed->s->sizeof_dyn; 4057 dynconend = sdyn->contents + sdyn->size; 4058 4059 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize) 4060 { 4061 Elf_Internal_Dyn dyn; 4062 asection *s; 4063 4064 bed->s->swap_dyn_in (dynobj, dyncon, &dyn); 4065 4066 switch (dyn.d_tag) 4067 { 4068 case DT_PLTGOT: 4069 s = htab->elf.sgotplt; 4070 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 4071 break; 4072 case DT_JMPREL: 4073 s = htab->elf.srelplt; 4074 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 4075 break; 4076 case DT_PLTRELSZ: 4077 s = htab->elf.srelplt; 4078 dyn.d_un.d_val = s->size; 4079 break; 4080 default: 4081 continue; 4082 } 4083 4084 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon); 4085 } 4086 return TRUE; 4087 } 4088 4089 bfd_boolean 4090 tilegx_elf_finish_dynamic_sections (bfd *output_bfd, 4091 struct bfd_link_info *info) 4092 { 4093 bfd *dynobj; 4094 asection *sdyn; 4095 struct tilegx_elf_link_hash_table *htab; 4096 size_t pad_size; 4097 4098 htab = tilegx_elf_hash_table (info); 4099 BFD_ASSERT (htab != NULL); 4100 dynobj = htab->elf.dynobj; 4101 4102 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 4103 4104 if (elf_hash_table (info)->dynamic_sections_created) 4105 { 4106 asection *splt; 4107 bfd_boolean ret; 4108 4109 splt = htab->elf.splt; 4110 BFD_ASSERT (splt != NULL && sdyn != NULL); 4111 4112 ret = tilegx_finish_dyn (output_bfd, info, dynobj, sdyn, splt); 4113 4114 if (!ret) 4115 return ret; 4116 4117 /* Fill in the head and tail entries in the procedure linkage table. */ 4118 if (splt->size > 0) 4119 { 4120 memcpy (splt->contents, 4121 ABI_64_P (output_bfd) ? 4122 tilegx64_plt0_entry : tilegx32_plt0_entry, 4123 PLT_HEADER_SIZE); 4124 4125 memcpy (splt->contents + splt->size 4126 - PLT_ENTRY_SIZE + PLT_HEADER_SIZE, 4127 ABI_64_P (output_bfd) ? 4128 tilegx64_plt_tail_entry : tilegx32_plt_tail_entry, 4129 PLT_TAIL_SIZE); 4130 /* Add padding so that the plt section is a multiple of its 4131 entry size. */ 4132 pad_size = PLT_ENTRY_SIZE - PLT_HEADER_SIZE - PLT_TAIL_SIZE; 4133 memset (splt->contents + splt->size - pad_size, 0, pad_size); 4134 4135 elf_section_data (splt->output_section)->this_hdr.sh_entsize 4136 = PLT_ENTRY_SIZE; 4137 } 4138 } 4139 4140 if (htab->elf.sgotplt) 4141 { 4142 if (bfd_is_abs_section (htab->elf.sgotplt->output_section)) 4143 { 4144 _bfd_error_handler 4145 (_("discarded output section: `%pA'"), htab->elf.sgotplt); 4146 return FALSE; 4147 } 4148 4149 if (htab->elf.sgotplt->size > 0) 4150 { 4151 /* Write the first two entries in .got.plt, needed for the dynamic 4152 linker. */ 4153 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) -1, 4154 htab->elf.sgotplt->contents); 4155 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) 0, 4156 htab->elf.sgotplt->contents 4157 + GOT_ENTRY_SIZE (htab)); 4158 4159 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4160 GOT_ENTRY_SIZE (htab); 4161 } 4162 } 4163 4164 if (htab->elf.sgot) 4165 { 4166 if (htab->elf.sgot->size > 0) 4167 { 4168 /* Set the first entry in the global offset table to the address of 4169 the dynamic section. */ 4170 bfd_vma val = (sdyn ? 4171 sdyn->output_section->vma + sdyn->output_offset : 4172 0); 4173 TILEGX_ELF_PUT_WORD (htab, output_bfd, val, 4174 htab->elf.sgot->contents); 4175 4176 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4177 GOT_ENTRY_SIZE (htab); 4178 } 4179 } 4180 4181 return TRUE; 4182 } 4183 4184 4185 4186 /* Return address for Ith PLT stub in section PLT, for relocation REL 4187 or (bfd_vma) -1 if it should not be included. */ 4188 4189 bfd_vma 4190 tilegx_elf_plt_sym_val (bfd_vma i, const asection *plt, 4191 const arelent *rel ATTRIBUTE_UNUSED) 4192 { 4193 return plt->vma + PLT_HEADER_SIZE + i * PLT_ENTRY_SIZE; 4194 } 4195 4196 enum elf_reloc_type_class 4197 tilegx_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, 4198 const asection *rel_sec ATTRIBUTE_UNUSED, 4199 const Elf_Internal_Rela *rela) 4200 { 4201 switch ((int) TILEGX_ELF_R_TYPE (rela->r_info)) 4202 { 4203 case R_TILEGX_RELATIVE: 4204 return reloc_class_relative; 4205 case R_TILEGX_JMP_SLOT: 4206 return reloc_class_plt; 4207 case R_TILEGX_COPY: 4208 return reloc_class_copy; 4209 default: 4210 return reloc_class_normal; 4211 } 4212 } 4213 4214 int 4215 tilegx_additional_program_headers (bfd *abfd, 4216 struct bfd_link_info *info ATTRIBUTE_UNUSED) 4217 { 4218 /* Each .intrpt section specified by the user adds another PT_LOAD 4219 header since the sections are discontiguous. */ 4220 static const char intrpt_sections[4][9] = 4221 { 4222 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3" 4223 }; 4224 int count = 0; 4225 int i; 4226 4227 for (i = 0; i < 4; i++) 4228 { 4229 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]); 4230 if (sec != NULL && (sec->flags & SEC_LOAD) != 0) 4231 ++count; 4232 } 4233 4234 /* Add four "padding" headers in to leave room in case a custom linker 4235 script does something fancy. Otherwise ld complains that it ran 4236 out of program headers and refuses to link. */ 4237 count += 4; 4238 4239 return count; 4240 } 4241 4242 4243 bfd_boolean 4244 _bfd_tilegx_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) 4245 { 4246 bfd *obfd = info->output_bfd; 4247 const char *targ1 = bfd_get_target (ibfd); 4248 const char *targ2 = bfd_get_target (obfd); 4249 4250 if (strcmp (targ1, targ2) != 0) 4251 { 4252 _bfd_error_handler 4253 /* xgettext:c-format */ 4254 (_("%pB: cannot link together %s and %s objects"), 4255 ibfd, targ1, targ2); 4256 bfd_set_error (bfd_error_bad_value); 4257 return FALSE; 4258 } 4259 4260 return TRUE; 4261 } 4262