1 /* TILE-Gx-specific support for ELF. 2 Copyright (C) 2011-2016 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. */ 634 635 typedef struct tilegx_reloc_map 636 { 637 bfd_reloc_code_real_type bfd_reloc_val; 638 unsigned int tilegx_reloc_val; 639 reloc_howto_type * table; 640 } reloc_map; 641 642 static const reloc_map tilegx_reloc_map [] = 643 { 644 #define TH_REMAP(bfd, tilegx) \ 645 { bfd, tilegx, tilegx_elf_howto_table }, 646 647 /* Standard relocations. */ 648 TH_REMAP (BFD_RELOC_NONE, R_TILEGX_NONE) 649 TH_REMAP (BFD_RELOC_64, R_TILEGX_64) 650 TH_REMAP (BFD_RELOC_32, R_TILEGX_32) 651 TH_REMAP (BFD_RELOC_16, R_TILEGX_16) 652 TH_REMAP (BFD_RELOC_8, R_TILEGX_8) 653 TH_REMAP (BFD_RELOC_64_PCREL, R_TILEGX_64_PCREL) 654 TH_REMAP (BFD_RELOC_32_PCREL, R_TILEGX_32_PCREL) 655 TH_REMAP (BFD_RELOC_16_PCREL, R_TILEGX_16_PCREL) 656 TH_REMAP (BFD_RELOC_8_PCREL, R_TILEGX_8_PCREL) 657 658 #define SIMPLE_REMAP(t) TH_REMAP (BFD_RELOC_##t, R_##t) 659 660 /* Custom relocations. */ 661 SIMPLE_REMAP (TILEGX_HW0) 662 SIMPLE_REMAP (TILEGX_HW1) 663 SIMPLE_REMAP (TILEGX_HW2) 664 SIMPLE_REMAP (TILEGX_HW3) 665 SIMPLE_REMAP (TILEGX_HW0_LAST) 666 SIMPLE_REMAP (TILEGX_HW1_LAST) 667 SIMPLE_REMAP (TILEGX_HW2_LAST) 668 SIMPLE_REMAP (TILEGX_COPY) 669 SIMPLE_REMAP (TILEGX_GLOB_DAT) 670 SIMPLE_REMAP (TILEGX_JMP_SLOT) 671 SIMPLE_REMAP (TILEGX_RELATIVE) 672 SIMPLE_REMAP (TILEGX_BROFF_X1) 673 SIMPLE_REMAP (TILEGX_JUMPOFF_X1) 674 SIMPLE_REMAP (TILEGX_JUMPOFF_X1_PLT) 675 SIMPLE_REMAP (TILEGX_IMM8_X0) 676 SIMPLE_REMAP (TILEGX_IMM8_Y0) 677 SIMPLE_REMAP (TILEGX_IMM8_X1) 678 SIMPLE_REMAP (TILEGX_IMM8_Y1) 679 SIMPLE_REMAP (TILEGX_DEST_IMM8_X1) 680 SIMPLE_REMAP (TILEGX_MT_IMM14_X1) 681 SIMPLE_REMAP (TILEGX_MF_IMM14_X1) 682 SIMPLE_REMAP (TILEGX_MMSTART_X0) 683 SIMPLE_REMAP (TILEGX_MMEND_X0) 684 SIMPLE_REMAP (TILEGX_SHAMT_X0) 685 SIMPLE_REMAP (TILEGX_SHAMT_X1) 686 SIMPLE_REMAP (TILEGX_SHAMT_Y0) 687 SIMPLE_REMAP (TILEGX_SHAMT_Y1) 688 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0) 689 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0) 690 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1) 691 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1) 692 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2) 693 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2) 694 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3) 695 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3) 696 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST) 697 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST) 698 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST) 699 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST) 700 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST) 701 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST) 702 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_PCREL) 703 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_PCREL) 704 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_PCREL) 705 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_PCREL) 706 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_PCREL) 707 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_PCREL) 708 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3_PCREL) 709 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3_PCREL) 710 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_PCREL) 711 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_PCREL) 712 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_PCREL) 713 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_PCREL) 714 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST_PCREL) 715 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST_PCREL) 716 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_GOT) 717 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_GOT) 718 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_PLT_PCREL) 719 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_PLT_PCREL) 720 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_PLT_PCREL) 721 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_PLT_PCREL) 722 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_PLT_PCREL) 723 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_PLT_PCREL) 724 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_GOT) 725 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_GOT) 726 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_GOT) 727 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_GOT) 728 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3_PLT_PCREL) 729 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3_PLT_PCREL) 730 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_GD) 731 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_GD) 732 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_LE) 733 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_LE) 734 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_LE) 735 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_LE) 736 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_LE) 737 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_LE) 738 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_GD) 739 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_GD) 740 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_GD) 741 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_GD) 742 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_IE) 743 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_IE) 744 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL) 745 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL) 746 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL) 747 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL) 748 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL) 749 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL) 750 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_IE) 751 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_IE) 752 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_IE) 753 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_IE) 754 755 SIMPLE_REMAP (TILEGX_TLS_DTPMOD64) 756 SIMPLE_REMAP (TILEGX_TLS_DTPOFF64) 757 SIMPLE_REMAP (TILEGX_TLS_TPOFF64) 758 759 SIMPLE_REMAP (TILEGX_TLS_DTPMOD32) 760 SIMPLE_REMAP (TILEGX_TLS_DTPOFF32) 761 SIMPLE_REMAP (TILEGX_TLS_TPOFF32) 762 763 SIMPLE_REMAP (TILEGX_TLS_GD_CALL) 764 SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_GD_ADD) 765 SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_GD_ADD) 766 SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_GD_ADD) 767 SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_GD_ADD) 768 SIMPLE_REMAP (TILEGX_TLS_IE_LOAD) 769 SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_ADD) 770 SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_ADD) 771 SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_ADD) 772 SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_ADD) 773 774 #undef SIMPLE_REMAP 775 #undef TH_REMAP 776 777 { BFD_RELOC_VTABLE_INHERIT, R_TILEGX_GNU_VTINHERIT, tilegx_elf_howto_table2 }, 778 { BFD_RELOC_VTABLE_ENTRY, R_TILEGX_GNU_VTENTRY, tilegx_elf_howto_table2 }, 779 }; 780 781 782 783 /* The TILE-Gx linker needs to keep track of the number of relocs that it 784 decides to copy as dynamic relocs in check_relocs for each symbol. 785 This is so that it can later discard them if they are found to be 786 unnecessary. We store the information in a field extending the 787 regular ELF linker hash table. */ 788 789 struct tilegx_elf_dyn_relocs 790 { 791 struct tilegx_elf_dyn_relocs *next; 792 793 /* The input section of the reloc. */ 794 asection *sec; 795 796 /* Total number of relocs copied for the input section. */ 797 bfd_size_type count; 798 799 /* Number of pc-relative relocs copied for the input section. */ 800 bfd_size_type pc_count; 801 }; 802 803 /* TILEGX ELF linker hash entry. */ 804 805 struct tilegx_elf_link_hash_entry 806 { 807 struct elf_link_hash_entry elf; 808 809 /* Track dynamic relocs copied for this symbol. */ 810 struct tilegx_elf_dyn_relocs *dyn_relocs; 811 812 #define GOT_UNKNOWN 0 813 #define GOT_NORMAL 1 814 #define GOT_TLS_GD 2 815 #define GOT_TLS_IE 4 816 unsigned char tls_type; 817 }; 818 819 #define tilegx_elf_hash_entry(ent) \ 820 ((struct tilegx_elf_link_hash_entry *)(ent)) 821 822 struct _bfd_tilegx_elf_obj_tdata 823 { 824 struct elf_obj_tdata root; 825 826 /* tls_type for each local got entry. */ 827 char *local_got_tls_type; 828 }; 829 830 #define _bfd_tilegx_elf_tdata(abfd) \ 831 ((struct _bfd_tilegx_elf_obj_tdata *) (abfd)->tdata.any) 832 833 #define _bfd_tilegx_elf_local_got_tls_type(abfd) \ 834 (_bfd_tilegx_elf_tdata (abfd)->local_got_tls_type) 835 836 #define is_tilegx_elf(bfd) \ 837 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ 838 && elf_tdata (bfd) != NULL \ 839 && elf_object_id (bfd) == TILEGX_ELF_DATA) 840 841 #include "elf/common.h" 842 #include "elf/internal.h" 843 844 struct tilegx_elf_link_hash_table 845 { 846 struct elf_link_hash_table elf; 847 848 int bytes_per_word; 849 int word_align_power; 850 int bytes_per_rela; 851 int dtpmod_reloc; 852 int dtpoff_reloc; 853 int tpoff_reloc; 854 bfd_vma (*r_info) (Elf_Internal_Rela *, bfd_vma, bfd_vma); 855 bfd_vma (*r_symndx) (bfd_vma); 856 void (*put_word) (bfd *, bfd_vma, void *); 857 const char *dynamic_interpreter; 858 859 /* Short-cuts to get to dynamic linker sections. */ 860 asection *sdynbss; 861 asection *srelbss; 862 863 /* Whether LE transition has been disabled for some of the 864 sections. */ 865 bfd_boolean disable_le_transition; 866 867 /* Small local sym to section mapping cache. */ 868 struct sym_cache sym_cache; 869 }; 870 871 872 /* Get the Tile ELF linker hash table from a link_info structure. */ 873 #define tilegx_elf_hash_table(p) \ 874 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 875 == TILEGX_ELF_DATA ? ((struct tilegx_elf_link_hash_table *) ((p)->hash)) : NULL) 876 877 #ifdef BFD64 878 static bfd_vma 879 tilegx_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED, 880 bfd_vma rel_index, 881 bfd_vma type) 882 { 883 return ELF64_R_INFO (rel_index, type); 884 } 885 886 static bfd_vma 887 tilegx_elf_r_symndx_64 (bfd_vma r_info) 888 { 889 return ELF64_R_SYM (r_info); 890 } 891 892 static void 893 tilegx_put_word_64 (bfd *abfd, bfd_vma val, void *ptr) 894 { 895 bfd_put_64 (abfd, val, ptr); 896 } 897 #endif /* BFD64 */ 898 899 static bfd_vma 900 tilegx_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED, 901 bfd_vma rel_index, 902 bfd_vma type) 903 { 904 return ELF32_R_INFO (rel_index, type); 905 } 906 907 static bfd_vma 908 tilegx_elf_r_symndx_32 (bfd_vma r_info) 909 { 910 return ELF32_R_SYM (r_info); 911 } 912 913 static void 914 tilegx_put_word_32 (bfd *abfd, bfd_vma val, void *ptr) 915 { 916 bfd_put_32 (abfd, val, ptr); 917 } 918 919 reloc_howto_type * 920 tilegx_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, 921 bfd_reloc_code_real_type code) 922 { 923 unsigned int i; 924 925 for (i = ARRAY_SIZE (tilegx_reloc_map); i--;) 926 { 927 const reloc_map * entry; 928 929 entry = tilegx_reloc_map + i; 930 931 if (entry->bfd_reloc_val == code) 932 return entry->table + (entry->tilegx_reloc_val 933 - entry->table[0].type); 934 } 935 936 return NULL; 937 } 938 939 reloc_howto_type * 940 tilegx_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 941 const char *r_name) 942 { 943 unsigned int i; 944 945 for (i = 0; 946 i < (sizeof (tilegx_elf_howto_table) 947 / sizeof (tilegx_elf_howto_table[0])); 948 i++) 949 if (tilegx_elf_howto_table[i].name != NULL 950 && strcasecmp (tilegx_elf_howto_table[i].name, r_name) == 0) 951 return &tilegx_elf_howto_table[i]; 952 953 return NULL; 954 } 955 956 void 957 tilegx_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, 958 arelent *cache_ptr, 959 Elf_Internal_Rela *dst) 960 { 961 unsigned int r_type = TILEGX_ELF_R_TYPE (dst->r_info); 962 963 if (r_type <= (unsigned int) R_TILEGX_IMM8_Y1_TLS_ADD) 964 cache_ptr->howto = &tilegx_elf_howto_table [r_type]; 965 else if (r_type - R_TILEGX_GNU_VTINHERIT 966 <= (unsigned int) R_TILEGX_GNU_VTENTRY) 967 cache_ptr->howto 968 = &tilegx_elf_howto_table2 [r_type - R_TILEGX_GNU_VTINHERIT]; 969 else 970 abort (); 971 } 972 973 typedef tilegx_bundle_bits (*tilegx_create_func)(int); 974 975 static const tilegx_create_func reloc_to_create_func[] = 976 { 977 /* The first twenty relocation types don't correspond to operands */ 978 NULL, 979 NULL, 980 NULL, 981 NULL, 982 NULL, 983 NULL, 984 NULL, 985 NULL, 986 NULL, 987 NULL, 988 NULL, 989 NULL, 990 NULL, 991 NULL, 992 NULL, 993 NULL, 994 NULL, 995 NULL, 996 NULL, 997 NULL, 998 999 /* The remaining relocations are used for immediate operands */ 1000 create_BrOff_X1, 1001 create_JumpOff_X1, 1002 create_JumpOff_X1, 1003 create_Imm8_X0, 1004 create_Imm8_Y0, 1005 create_Imm8_X1, 1006 create_Imm8_Y1, 1007 create_Dest_Imm8_X1, 1008 create_MT_Imm14_X1, 1009 create_MF_Imm14_X1, 1010 create_BFStart_X0, 1011 create_BFEnd_X0, 1012 create_ShAmt_X0, 1013 create_ShAmt_X1, 1014 create_ShAmt_Y0, 1015 create_ShAmt_Y1, 1016 create_Imm16_X0, 1017 create_Imm16_X1, 1018 create_Imm16_X0, 1019 create_Imm16_X1, 1020 create_Imm16_X0, 1021 create_Imm16_X1, 1022 create_Imm16_X0, 1023 create_Imm16_X1, 1024 create_Imm16_X0, 1025 create_Imm16_X1, 1026 create_Imm16_X0, 1027 create_Imm16_X1, 1028 create_Imm16_X0, 1029 create_Imm16_X1, 1030 create_Imm16_X0, 1031 create_Imm16_X1, 1032 create_Imm16_X0, 1033 create_Imm16_X1, 1034 create_Imm16_X0, 1035 create_Imm16_X1, 1036 create_Imm16_X0, 1037 create_Imm16_X1, 1038 create_Imm16_X0, 1039 create_Imm16_X1, 1040 create_Imm16_X0, 1041 create_Imm16_X1, 1042 create_Imm16_X0, 1043 create_Imm16_X1, 1044 create_Imm16_X0, 1045 create_Imm16_X1, 1046 create_Imm16_X0, 1047 create_Imm16_X1, 1048 create_Imm16_X0, 1049 create_Imm16_X1, 1050 create_Imm16_X0, 1051 create_Imm16_X1, 1052 create_Imm16_X0, 1053 create_Imm16_X1, 1054 create_Imm16_X0, 1055 create_Imm16_X1, 1056 create_Imm16_X0, 1057 create_Imm16_X1, 1058 create_Imm16_X0, 1059 create_Imm16_X1, 1060 create_Imm16_X0, 1061 create_Imm16_X1, 1062 create_Imm16_X0, 1063 create_Imm16_X1, 1064 create_Imm16_X0, 1065 create_Imm16_X1, 1066 create_Imm16_X0, 1067 create_Imm16_X1, 1068 create_Imm16_X0, 1069 create_Imm16_X1, 1070 NULL, 1071 NULL, 1072 create_Imm16_X0, 1073 create_Imm16_X1, 1074 create_Imm16_X0, 1075 create_Imm16_X1, 1076 create_Imm16_X0, 1077 create_Imm16_X1, 1078 create_Imm16_X0, 1079 create_Imm16_X1, 1080 create_Imm16_X0, 1081 create_Imm16_X1, 1082 create_Imm16_X0, 1083 create_Imm16_X1, 1084 }; 1085 1086 static void 1087 tilegx_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel) 1088 { 1089 const struct elf_backend_data *bed; 1090 bfd_byte *loc; 1091 1092 bed = get_elf_backend_data (abfd); 1093 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela); 1094 bed->s->swap_reloca_out (abfd, rel, loc); 1095 } 1096 1097 /* PLT/GOT stuff */ 1098 1099 /* The procedure linkage table starts with the following header: 1100 1101 ld_add r28, r27, 8 1102 ld r27, r27 1103 { 1104 jr r27 1105 info 10 ## SP not offset, return PC in LR 1106 } 1107 1108 Subsequent entries are the following, jumping to the header at the end: 1109 1110 { 1111 moveli r28, <_GLOBAL_OFFSET_TABLE_ - 1f + MY_GOT_OFFSET> 1112 lnk r26 1113 } 1114 1: 1115 { 1116 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b> 1117 shl16insli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET> 1118 } 1119 { 1120 add r28, r26, r28 1121 shl16insli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b> 1122 } 1123 { 1124 add r27, r26, r27 1125 ld r28, r28 1126 info 10 ## SP not offset, return PC in LR 1127 } 1128 { 1129 shl16insli r29, zero, MY_PLT_INDEX 1130 jr r28 1131 } 1132 1133 This code sequence lets the code at at the start of the PLT determine 1134 which PLT entry was executed by examining 'r29'. 1135 1136 Note that MY_PLT_INDEX skips over the header entries, so the first 1137 actual jump table entry has index zero. 1138 1139 If the offset fits in 16 bits, 1140 1141 lnk r26 1142 1: 1143 { 1144 addli r28, r26, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET> 1145 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b> 1146 } 1147 { 1148 shl16insli r29, zero, MY_PLT_INDEX 1149 ld r28, r28 1150 } 1151 { 1152 add r27, r26, r27 1153 jr r28 1154 } 1155 info 10 ## SP not offset, return PC in LR 1156 1157 For the purpose of backtracing, the procedure linkage table ends with the 1158 following tail entry: 1159 1160 info 10 ## SP not offset, return PC in LR 1161 1162 The 32-bit versions are similar, with ld4s replacing ld, and offsets into 1163 the GOT being multiples of 4 instead of 8. 1164 1165 */ 1166 1167 #define PLT_HEADER_SIZE_IN_BUNDLES 3 1168 #define PLT_ENTRY_SIZE_IN_BUNDLES 5 1169 #define PLT_TAIL_SIZE_IN_BUNDLES 1 1170 1171 #define PLT_HEADER_SIZE \ 1172 (PLT_HEADER_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES) 1173 #define PLT_ENTRY_SIZE \ 1174 (PLT_ENTRY_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES) 1175 #define PLT_TAIL_SIZE \ 1176 (PLT_TAIL_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES) 1177 1178 #define GOT_ENTRY_SIZE(htab) TILEGX_ELF_WORD_BYTES (htab) 1179 1180 #define GOTPLT_HEADER_SIZE(htab) (2 * GOT_ENTRY_SIZE (htab)) 1181 1182 static const bfd_byte 1183 tilegx64_plt0_entry[PLT_HEADER_SIZE] = 1184 { 1185 0x00, 0x30, 0x48, 0x51, 1186 0x6e, 0x43, 0xa0, 0x18, /* { ld_add r28, r27, 8 } */ 1187 0x00, 0x30, 0xbc, 0x35, 1188 0x00, 0x40, 0xde, 0x9e, /* { ld r27, r27 } */ 1189 0xff, 0xaf, 0x30, 0x40, 1190 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */ 1191 }; 1192 1193 static const bfd_byte 1194 tilegx64_long_plt_entry[PLT_ENTRY_SIZE] = 1195 { 1196 0xdc, 0x0f, 0x00, 0x10, 1197 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */ 1198 0xdb, 0x0f, 0x00, 0x10, 1199 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */ 1200 0x9c, 0xc6, 0x0d, 0xd0, 1201 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */ 1202 0x9b, 0xb6, 0xc5, 0xad, 1203 0xff, 0x57, 0xe0, 0x8e, /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */ 1204 0xdd, 0x0f, 0x00, 0x70, 1205 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */ 1206 }; 1207 1208 static const bfd_byte 1209 tilegx64_short_plt_entry[PLT_ENTRY_SIZE] = 1210 { 1211 0x00, 0x30, 0x48, 0x51, 1212 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */ 1213 0x9c, 0x06, 0x00, 0x90, 1214 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */ 1215 0xdd, 0x0f, 0x00, 0x70, 1216 0x8e, 0xeb, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld r28, r28 } */ 1217 0x9b, 0xb6, 0x0d, 0x50, 1218 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */ 1219 0x00, 0x30, 0x48, 0xd1, 1220 0xff, 0x57, 0x18, 0x18, /* { info 10 } */ 1221 }; 1222 1223 /* Reuse an existing info 10 bundle. */ 1224 static const bfd_byte *const tilegx64_plt_tail_entry = 1225 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES]; 1226 1227 static const bfd_byte 1228 tilegx32_plt0_entry[PLT_HEADER_SIZE] = 1229 { 1230 0x00, 0x30, 0x48, 0x51, 1231 0x6e, 0x23, 0x58, 0x18, /* { ld4s_add r28, r27, 4 } */ 1232 0x00, 0x30, 0xbc, 0x35, 1233 0x00, 0x40, 0xde, 0x9c, /* { ld4s r27, r27 } */ 1234 0xff, 0xaf, 0x30, 0x40, 1235 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */ 1236 }; 1237 1238 static const bfd_byte 1239 tilegx32_long_plt_entry[PLT_ENTRY_SIZE] = 1240 { 1241 0xdc, 0x0f, 0x00, 0x10, 1242 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */ 1243 0xdb, 0x0f, 0x00, 0x10, 1244 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */ 1245 0x9c, 0xc6, 0x0d, 0xd0, 1246 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */ 1247 0x9b, 0xb6, 0xc5, 0xad, 1248 0xff, 0x57, 0xe0, 0x8c, /* { add r27, r26, r27 ; info 10 ; ld4s r28, r28 } */ 1249 0xdd, 0x0f, 0x00, 0x70, 1250 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */ 1251 }; 1252 1253 static const bfd_byte 1254 tilegx32_short_plt_entry[PLT_ENTRY_SIZE] = 1255 { 1256 0x00, 0x30, 0x48, 0x51, 1257 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */ 1258 0x9c, 0x06, 0x00, 0x90, 1259 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */ 1260 0xdd, 0x0f, 0x00, 0x70, 1261 0x8e, 0x9b, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld4s r28, r28 } */ 1262 0x9b, 0xb6, 0x0d, 0x50, 1263 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */ 1264 0x00, 0x30, 0x48, 0xd1, 1265 0xff, 0x57, 0x18, 0x18, /* { info 10 } */ 1266 }; 1267 1268 /* Reuse an existing info 10 bundle. */ 1269 static const bfd_byte *const tilegx32_plt_tail_entry = 1270 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES]; 1271 1272 static int 1273 tilegx_plt_entry_build (bfd *output_bfd, 1274 struct tilegx_elf_link_hash_table *htab, 1275 asection *splt, asection *sgotplt, 1276 bfd_vma offset, bfd_vma *r_offset) 1277 { 1278 int plt_index = (offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; 1279 int got_offset = (plt_index * GOT_ENTRY_SIZE (htab) 1280 + GOTPLT_HEADER_SIZE (htab)); 1281 tilegx_bundle_bits *pc; 1282 1283 /* Compute the distance from the got entry to the lnk. */ 1284 bfd_signed_vma dist_got_entry = sgotplt->output_section->vma 1285 + sgotplt->output_offset 1286 + got_offset 1287 - splt->output_section->vma 1288 - splt->output_offset 1289 - offset 1290 - TILEGX_BUNDLE_SIZE_IN_BYTES; 1291 1292 /* Compute the distance to GOTPLT[0]. */ 1293 bfd_signed_vma dist_got0 = dist_got_entry - got_offset; 1294 1295 /* Check whether we can use the short plt entry with 16-bit offset. */ 1296 bfd_boolean short_plt_entry = 1297 (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000); 1298 1299 const tilegx_bundle_bits *plt_entry = (tilegx_bundle_bits *) 1300 (ABI_64_P (output_bfd) ? 1301 (short_plt_entry ? tilegx64_short_plt_entry : tilegx64_long_plt_entry) : 1302 (short_plt_entry ? tilegx32_short_plt_entry : tilegx32_long_plt_entry)); 1303 1304 /* Copy the plt entry template. */ 1305 memcpy (splt->contents + offset, plt_entry, PLT_ENTRY_SIZE); 1306 1307 /* Write the immediate offsets. */ 1308 pc = (tilegx_bundle_bits *)(splt->contents + offset); 1309 1310 if (short_plt_entry) 1311 { 1312 /* { lnk r28 } */ 1313 pc++; 1314 1315 /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; moveli r27, &GOTPLT[0] } */ 1316 *pc++ |= create_Imm16_X0 (dist_got_entry) 1317 | create_Imm16_X1 (dist_got0); 1318 1319 /* { shl16insli r29, zero, MY_PLT_INDEX ; ld r28, r28 } */ 1320 *pc++ |= create_Imm16_X0 (plt_index); 1321 } 1322 else 1323 { 1324 /* { moveli r28, &GOTPLT[MY_GOT_INDEX] ; lnk r26 } */ 1325 *pc++ |= create_Imm16_X0 (dist_got_entry >> 16); 1326 1327 /* { moveli r27, &GOTPLT[0] ; 1328 shl16insli r28, r28, &GOTPLT[MY_GOT_INDEX] } */ 1329 *pc++ |= create_Imm16_X0 (dist_got0 >> 16) 1330 | create_Imm16_X1 (dist_got_entry); 1331 1332 /* { add r28, r26, r28 ; shl16insli r27, r27, &GOTPLT[0] } */ 1333 *pc++ |= create_Imm16_X1 (dist_got0); 1334 1335 /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */ 1336 pc++; 1337 1338 /* { shl16insli r29, zero, MY_GOT_INDEX ; jr r28 } */ 1339 *pc++ |= create_Imm16_X0 (plt_index); 1340 } 1341 1342 /* Set the relocation offset. */ 1343 *r_offset = got_offset; 1344 1345 return plt_index; 1346 } 1347 1348 /* Create an entry in an TILEGX ELF linker hash table. */ 1349 1350 static struct bfd_hash_entry * 1351 link_hash_newfunc (struct bfd_hash_entry *entry, 1352 struct bfd_hash_table *table, const char *string) 1353 { 1354 /* Allocate the structure if it has not already been allocated by a 1355 subclass. */ 1356 if (entry == NULL) 1357 { 1358 entry = 1359 bfd_hash_allocate (table, 1360 sizeof (struct tilegx_elf_link_hash_entry)); 1361 if (entry == NULL) 1362 return entry; 1363 } 1364 1365 /* Call the allocation method of the superclass. */ 1366 entry = _bfd_elf_link_hash_newfunc (entry, table, string); 1367 if (entry != NULL) 1368 { 1369 struct tilegx_elf_link_hash_entry *eh; 1370 1371 eh = (struct tilegx_elf_link_hash_entry *) entry; 1372 eh->dyn_relocs = NULL; 1373 eh->tls_type = GOT_UNKNOWN; 1374 } 1375 1376 return entry; 1377 } 1378 1379 /* Create a TILEGX ELF linker hash table. */ 1380 1381 struct bfd_link_hash_table * 1382 tilegx_elf_link_hash_table_create (bfd *abfd) 1383 { 1384 struct tilegx_elf_link_hash_table *ret; 1385 bfd_size_type amt = sizeof (struct tilegx_elf_link_hash_table); 1386 1387 ret = (struct tilegx_elf_link_hash_table *) bfd_zmalloc (amt); 1388 if (ret == NULL) 1389 return NULL; 1390 1391 #ifdef BFD64 1392 if (ABI_64_P (abfd)) 1393 { 1394 ret->bytes_per_word = 8; 1395 ret->word_align_power = 3; 1396 ret->bytes_per_rela = sizeof (Elf64_External_Rela); 1397 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF64; 1398 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD64; 1399 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF64; 1400 ret->r_info = tilegx_elf_r_info_64; 1401 ret->r_symndx = tilegx_elf_r_symndx_64; 1402 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER; 1403 ret->put_word = tilegx_put_word_64; 1404 } 1405 else 1406 #endif 1407 { 1408 ret->bytes_per_word = 4; 1409 ret->word_align_power = 2; 1410 ret->bytes_per_rela = sizeof (Elf32_External_Rela); 1411 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF32; 1412 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD32; 1413 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF32; 1414 ret->r_info = tilegx_elf_r_info_32; 1415 ret->r_symndx = tilegx_elf_r_symndx_32; 1416 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER; 1417 ret->put_word = tilegx_put_word_32; 1418 } 1419 1420 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, 1421 sizeof (struct tilegx_elf_link_hash_entry), 1422 TILEGX_ELF_DATA)) 1423 { 1424 free (ret); 1425 return NULL; 1426 } 1427 1428 return &ret->elf.root; 1429 } 1430 1431 /* Create the .got section. */ 1432 1433 static bfd_boolean 1434 tilegx_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) 1435 { 1436 flagword flags; 1437 asection *s, *s_got; 1438 struct elf_link_hash_entry *h; 1439 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 1440 struct elf_link_hash_table *htab = elf_hash_table (info); 1441 1442 /* This function may be called more than once. */ 1443 s = bfd_get_linker_section (abfd, ".got"); 1444 if (s != NULL) 1445 return TRUE; 1446 1447 flags = bed->dynamic_sec_flags; 1448 1449 s = bfd_make_section_anyway_with_flags (abfd, 1450 (bed->rela_plts_and_copies_p 1451 ? ".rela.got" : ".rel.got"), 1452 (bed->dynamic_sec_flags 1453 | SEC_READONLY)); 1454 if (s == NULL 1455 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 1456 return FALSE; 1457 htab->srelgot = s; 1458 1459 s = s_got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); 1460 if (s == NULL 1461 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 1462 return FALSE; 1463 htab->sgot = s; 1464 1465 /* The first bit of the global offset table is the header. */ 1466 s->size += bed->got_header_size; 1467 1468 if (bed->want_got_plt) 1469 { 1470 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); 1471 if (s == NULL 1472 || !bfd_set_section_alignment (abfd, s, 1473 bed->s->log_file_align)) 1474 return FALSE; 1475 htab->sgotplt = s; 1476 1477 /* Reserve room for the header. */ 1478 s->size += GOTPLT_HEADER_SIZE (tilegx_elf_hash_table (info)); 1479 } 1480 1481 if (bed->want_got_sym) 1482 { 1483 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got 1484 section. We don't do this in the linker script because we don't want 1485 to define the symbol if we are not creating a global offset 1486 table. */ 1487 h = _bfd_elf_define_linkage_sym (abfd, info, s_got, 1488 "_GLOBAL_OFFSET_TABLE_"); 1489 elf_hash_table (info)->hgot = h; 1490 if (h == NULL) 1491 return FALSE; 1492 } 1493 1494 return TRUE; 1495 } 1496 1497 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and 1498 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our 1499 hash table. */ 1500 1501 bfd_boolean 1502 tilegx_elf_create_dynamic_sections (bfd *dynobj, 1503 struct bfd_link_info *info) 1504 { 1505 struct tilegx_elf_link_hash_table *htab; 1506 1507 htab = tilegx_elf_hash_table (info); 1508 BFD_ASSERT (htab != NULL); 1509 1510 if (!tilegx_elf_create_got_section (dynobj, info)) 1511 return FALSE; 1512 1513 if (!_bfd_elf_create_dynamic_sections (dynobj, info)) 1514 return FALSE; 1515 1516 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); 1517 if (!bfd_link_pic (info)) 1518 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss"); 1519 1520 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss 1521 || (!bfd_link_pic (info) && !htab->srelbss)) 1522 abort (); 1523 1524 return TRUE; 1525 } 1526 1527 /* Copy the extra info we tack onto an elf_link_hash_entry. */ 1528 1529 void 1530 tilegx_elf_copy_indirect_symbol (struct bfd_link_info *info, 1531 struct elf_link_hash_entry *dir, 1532 struct elf_link_hash_entry *ind) 1533 { 1534 struct tilegx_elf_link_hash_entry *edir, *eind; 1535 1536 edir = (struct tilegx_elf_link_hash_entry *) dir; 1537 eind = (struct tilegx_elf_link_hash_entry *) ind; 1538 1539 if (eind->dyn_relocs != NULL) 1540 { 1541 if (edir->dyn_relocs != NULL) 1542 { 1543 struct tilegx_elf_dyn_relocs **pp; 1544 struct tilegx_elf_dyn_relocs *p; 1545 1546 /* Add reloc counts against the indirect sym to the direct sym 1547 list. Merge any entries against the same section. */ 1548 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) 1549 { 1550 struct tilegx_elf_dyn_relocs *q; 1551 1552 for (q = edir->dyn_relocs; q != NULL; q = q->next) 1553 if (q->sec == p->sec) 1554 { 1555 q->pc_count += p->pc_count; 1556 q->count += p->count; 1557 *pp = p->next; 1558 break; 1559 } 1560 if (q == NULL) 1561 pp = &p->next; 1562 } 1563 *pp = edir->dyn_relocs; 1564 } 1565 1566 edir->dyn_relocs = eind->dyn_relocs; 1567 eind->dyn_relocs = NULL; 1568 } 1569 1570 if (ind->root.type == bfd_link_hash_indirect 1571 && dir->got.refcount <= 0) 1572 { 1573 edir->tls_type = eind->tls_type; 1574 eind->tls_type = GOT_UNKNOWN; 1575 } 1576 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 1577 } 1578 1579 static int 1580 tilegx_tls_translate_to_le (int r_type) 1581 { 1582 switch (r_type) 1583 { 1584 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 1585 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 1586 return R_TILEGX_IMM16_X0_HW0_TLS_LE; 1587 1588 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 1589 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 1590 return R_TILEGX_IMM16_X1_HW0_TLS_LE; 1591 1592 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 1593 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 1594 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE; 1595 1596 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 1597 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 1598 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE; 1599 1600 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 1601 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 1602 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE; 1603 1604 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 1605 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 1606 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE; 1607 } 1608 return r_type; 1609 } 1610 1611 static int 1612 tilegx_tls_translate_to_ie (int r_type) 1613 { 1614 switch (r_type) 1615 { 1616 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 1617 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 1618 return R_TILEGX_IMM16_X0_HW0_TLS_IE; 1619 1620 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 1621 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 1622 return R_TILEGX_IMM16_X1_HW0_TLS_IE; 1623 1624 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 1625 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 1626 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE; 1627 1628 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 1629 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 1630 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE; 1631 1632 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 1633 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 1634 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE; 1635 1636 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 1637 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 1638 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE; 1639 } 1640 return r_type; 1641 } 1642 1643 static int 1644 tilegx_elf_tls_transition (struct bfd_link_info *info, int r_type, 1645 int is_local, bfd_boolean disable_le_transition) 1646 { 1647 if (bfd_link_pic (info)) 1648 return r_type; 1649 1650 if (is_local && !disable_le_transition) 1651 return tilegx_tls_translate_to_le (r_type); 1652 else 1653 return tilegx_tls_translate_to_ie (r_type); 1654 } 1655 1656 /* Look through the relocs for a section during the first phase, and 1657 allocate space in the global offset table or procedure linkage 1658 table. */ 1659 1660 bfd_boolean 1661 tilegx_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, 1662 asection *sec, const Elf_Internal_Rela *relocs) 1663 { 1664 struct tilegx_elf_link_hash_table *htab; 1665 Elf_Internal_Shdr *symtab_hdr; 1666 struct elf_link_hash_entry **sym_hashes; 1667 const Elf_Internal_Rela *rel; 1668 const Elf_Internal_Rela *rel_end; 1669 asection *sreloc; 1670 int num_relocs; 1671 bfd_boolean has_tls_gd_or_ie = FALSE, has_tls_add = FALSE; 1672 1673 if (bfd_link_relocatable (info)) 1674 return TRUE; 1675 1676 htab = tilegx_elf_hash_table (info); 1677 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 1678 sym_hashes = elf_sym_hashes (abfd); 1679 1680 sreloc = NULL; 1681 1682 num_relocs = sec->reloc_count; 1683 1684 BFD_ASSERT (is_tilegx_elf (abfd) || num_relocs == 0); 1685 1686 if (htab->elf.dynobj == NULL) 1687 htab->elf.dynobj = abfd; 1688 1689 rel_end = relocs + num_relocs; 1690 1691 /* Check whether to do optimization to transform TLS GD/IE 1692 referehces to TLS LE. We disable it if we're linking with old 1693 TLS code sequences that do not support such optimization. Old 1694 TLS code sequences have tls_gd_call/tls_ie_load relocations but 1695 no tls_add relocations. */ 1696 for (rel = relocs; rel < rel_end && !has_tls_add; rel++) 1697 { 1698 int r_type = TILEGX_ELF_R_TYPE (rel->r_info); 1699 switch (r_type) 1700 { 1701 case R_TILEGX_TLS_GD_CALL: 1702 case R_TILEGX_TLS_IE_LOAD: 1703 has_tls_gd_or_ie = TRUE; 1704 break; 1705 case R_TILEGX_IMM8_X0_TLS_ADD: 1706 case R_TILEGX_IMM8_Y0_TLS_ADD: 1707 case R_TILEGX_IMM8_X1_TLS_ADD: 1708 case R_TILEGX_IMM8_Y1_TLS_ADD: 1709 has_tls_add = TRUE; 1710 break; 1711 } 1712 } 1713 1714 sec->sec_flg0 = (has_tls_gd_or_ie && !has_tls_add); 1715 htab->disable_le_transition |= sec->sec_flg0; 1716 1717 for (rel = relocs; rel < rel_end; rel++) 1718 { 1719 unsigned int r_type; 1720 unsigned long r_symndx; 1721 struct elf_link_hash_entry *h; 1722 int tls_type; 1723 1724 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info); 1725 r_type = TILEGX_ELF_R_TYPE (rel->r_info); 1726 1727 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) 1728 { 1729 (*_bfd_error_handler) (_("%B: bad symbol index: %d"), 1730 abfd, r_symndx); 1731 return FALSE; 1732 } 1733 1734 if (r_symndx < symtab_hdr->sh_info) 1735 h = NULL; 1736 else 1737 { 1738 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 1739 while (h->root.type == bfd_link_hash_indirect 1740 || h->root.type == bfd_link_hash_warning) 1741 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1742 1743 /* PR15323, ref flags aren't set for references in the same 1744 object. */ 1745 h->root.non_ir_ref = 1; 1746 } 1747 1748 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL, 1749 sec->sec_flg0); 1750 switch (r_type) 1751 { 1752 case R_TILEGX_IMM16_X0_HW0_TLS_LE: 1753 case R_TILEGX_IMM16_X1_HW0_TLS_LE: 1754 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE: 1755 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE: 1756 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE: 1757 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE: 1758 if (bfd_link_pic (info)) 1759 goto r_tilegx_plt32; 1760 break; 1761 1762 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 1763 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 1764 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 1765 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 1766 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 1767 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 1768 BFD_ASSERT (bfd_link_pic (info)); 1769 tls_type = GOT_TLS_GD; 1770 goto have_got_reference; 1771 1772 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 1773 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 1774 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 1775 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 1776 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 1777 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 1778 tls_type = GOT_TLS_IE; 1779 if (bfd_link_pic (info)) 1780 info->flags |= DF_STATIC_TLS; 1781 goto have_got_reference; 1782 1783 case R_TILEGX_IMM16_X0_HW0_GOT: 1784 case R_TILEGX_IMM16_X1_HW0_GOT: 1785 case R_TILEGX_IMM16_X0_HW0_LAST_GOT: 1786 case R_TILEGX_IMM16_X1_HW0_LAST_GOT: 1787 case R_TILEGX_IMM16_X0_HW1_LAST_GOT: 1788 case R_TILEGX_IMM16_X1_HW1_LAST_GOT: 1789 tls_type = GOT_NORMAL; 1790 /* Fall Through */ 1791 1792 have_got_reference: 1793 /* This symbol requires a global offset table entry. */ 1794 { 1795 int old_tls_type; 1796 1797 if (h != NULL) 1798 { 1799 h->got.refcount += 1; 1800 old_tls_type = tilegx_elf_hash_entry(h)->tls_type; 1801 } 1802 else 1803 { 1804 bfd_signed_vma *local_got_refcounts; 1805 1806 /* This is a global offset table entry for a local symbol. */ 1807 local_got_refcounts = elf_local_got_refcounts (abfd); 1808 if (local_got_refcounts == NULL) 1809 { 1810 bfd_size_type size; 1811 1812 size = symtab_hdr->sh_info; 1813 size *= (sizeof (bfd_signed_vma) + sizeof(char)); 1814 local_got_refcounts = ((bfd_signed_vma *) 1815 bfd_zalloc (abfd, size)); 1816 if (local_got_refcounts == NULL) 1817 return FALSE; 1818 elf_local_got_refcounts (abfd) = local_got_refcounts; 1819 _bfd_tilegx_elf_local_got_tls_type (abfd) 1820 = (char *) (local_got_refcounts + symtab_hdr->sh_info); 1821 } 1822 local_got_refcounts[r_symndx] += 1; 1823 old_tls_type = _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx]; 1824 } 1825 1826 /* If a TLS symbol is accessed using IE at least once, 1827 there is no point to use dynamic model for it. */ 1828 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN 1829 && (old_tls_type != GOT_TLS_GD 1830 || tls_type != GOT_TLS_IE)) 1831 { 1832 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD) 1833 tls_type = old_tls_type; 1834 else 1835 { 1836 (*_bfd_error_handler) 1837 (_("%B: `%s' accessed both as normal and thread local symbol"), 1838 abfd, h ? h->root.root.string : "<local>"); 1839 return FALSE; 1840 } 1841 } 1842 1843 if (old_tls_type != tls_type) 1844 { 1845 if (h != NULL) 1846 tilegx_elf_hash_entry (h)->tls_type = tls_type; 1847 else 1848 _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx] = tls_type; 1849 } 1850 } 1851 1852 if (htab->elf.sgot == NULL) 1853 { 1854 if (!tilegx_elf_create_got_section (htab->elf.dynobj, info)) 1855 return FALSE; 1856 } 1857 break; 1858 1859 case R_TILEGX_TLS_GD_CALL: 1860 if (bfd_link_pic (info)) 1861 { 1862 /* These are basically R_TILEGX_JUMPOFF_X1_PLT relocs 1863 against __tls_get_addr. */ 1864 struct bfd_link_hash_entry *bh = NULL; 1865 if (! _bfd_generic_link_add_one_symbol (info, abfd, 1866 "__tls_get_addr", 0, 1867 bfd_und_section_ptr, 0, 1868 NULL, FALSE, FALSE, 1869 &bh)) 1870 return FALSE; 1871 h = (struct elf_link_hash_entry *) bh; 1872 } 1873 else 1874 break; 1875 /* Fall through */ 1876 1877 case R_TILEGX_JUMPOFF_X1_PLT: 1878 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL: 1879 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL: 1880 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL: 1881 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL: 1882 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL: 1883 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL: 1884 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL: 1885 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL: 1886 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL: 1887 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL: 1888 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL: 1889 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL: 1890 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL: 1891 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL: 1892 /* This symbol requires a procedure linkage table entry. We 1893 actually build the entry in adjust_dynamic_symbol, 1894 because this might be a case of linking PIC code without 1895 linking in any dynamic objects, in which case we don't 1896 need to generate a procedure linkage table after all. */ 1897 1898 if (h != NULL) 1899 { 1900 h->needs_plt = 1; 1901 h->plt.refcount += 1; 1902 } 1903 break; 1904 1905 case R_TILEGX_64_PCREL: 1906 case R_TILEGX_32_PCREL: 1907 case R_TILEGX_16_PCREL: 1908 case R_TILEGX_8_PCREL: 1909 case R_TILEGX_IMM16_X0_HW0_PCREL: 1910 case R_TILEGX_IMM16_X1_HW0_PCREL: 1911 case R_TILEGX_IMM16_X0_HW1_PCREL: 1912 case R_TILEGX_IMM16_X1_HW1_PCREL: 1913 case R_TILEGX_IMM16_X0_HW2_PCREL: 1914 case R_TILEGX_IMM16_X1_HW2_PCREL: 1915 case R_TILEGX_IMM16_X0_HW3_PCREL: 1916 case R_TILEGX_IMM16_X1_HW3_PCREL: 1917 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL: 1918 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL: 1919 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL: 1920 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL: 1921 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL: 1922 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL: 1923 if (h != NULL) 1924 h->non_got_ref = 1; 1925 1926 if (h != NULL 1927 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 1928 break; 1929 /* Fall through. */ 1930 1931 case R_TILEGX_64: 1932 case R_TILEGX_32: 1933 case R_TILEGX_16: 1934 case R_TILEGX_8: 1935 case R_TILEGX_HW0: 1936 case R_TILEGX_HW1: 1937 case R_TILEGX_HW2: 1938 case R_TILEGX_HW3: 1939 case R_TILEGX_HW0_LAST: 1940 case R_TILEGX_HW1_LAST: 1941 case R_TILEGX_HW2_LAST: 1942 case R_TILEGX_COPY: 1943 case R_TILEGX_GLOB_DAT: 1944 case R_TILEGX_JMP_SLOT: 1945 case R_TILEGX_RELATIVE: 1946 case R_TILEGX_BROFF_X1: 1947 case R_TILEGX_JUMPOFF_X1: 1948 case R_TILEGX_IMM8_X0: 1949 case R_TILEGX_IMM8_Y0: 1950 case R_TILEGX_IMM8_X1: 1951 case R_TILEGX_IMM8_Y1: 1952 case R_TILEGX_DEST_IMM8_X1: 1953 case R_TILEGX_MT_IMM14_X1: 1954 case R_TILEGX_MF_IMM14_X1: 1955 case R_TILEGX_MMSTART_X0: 1956 case R_TILEGX_MMEND_X0: 1957 case R_TILEGX_SHAMT_X0: 1958 case R_TILEGX_SHAMT_X1: 1959 case R_TILEGX_SHAMT_Y0: 1960 case R_TILEGX_SHAMT_Y1: 1961 case R_TILEGX_IMM16_X0_HW0: 1962 case R_TILEGX_IMM16_X1_HW0: 1963 case R_TILEGX_IMM16_X0_HW1: 1964 case R_TILEGX_IMM16_X1_HW1: 1965 case R_TILEGX_IMM16_X0_HW2: 1966 case R_TILEGX_IMM16_X1_HW2: 1967 case R_TILEGX_IMM16_X0_HW3: 1968 case R_TILEGX_IMM16_X1_HW3: 1969 case R_TILEGX_IMM16_X0_HW0_LAST: 1970 case R_TILEGX_IMM16_X1_HW0_LAST: 1971 case R_TILEGX_IMM16_X0_HW1_LAST: 1972 case R_TILEGX_IMM16_X1_HW1_LAST: 1973 case R_TILEGX_IMM16_X0_HW2_LAST: 1974 case R_TILEGX_IMM16_X1_HW2_LAST: 1975 if (h != NULL) 1976 h->non_got_ref = 1; 1977 1978 r_tilegx_plt32: 1979 if (h != NULL && !bfd_link_pic (info)) 1980 { 1981 /* We may need a .plt entry if the function this reloc 1982 refers to is in a shared lib. */ 1983 h->plt.refcount += 1; 1984 } 1985 1986 /* If we are creating a shared library, and this is a reloc 1987 against a global symbol, or a non PC relative reloc 1988 against a local symbol, then we need to copy the reloc 1989 into the shared library. However, if we are linking with 1990 -Bsymbolic, we do not need to copy a reloc against a 1991 global symbol which is defined in an object we are 1992 including in the link (i.e., DEF_REGULAR is set). At 1993 this point we have not seen all the input files, so it is 1994 possible that DEF_REGULAR is not set now but will be set 1995 later (it is never cleared). In case of a weak definition, 1996 DEF_REGULAR may be cleared later by a strong definition in 1997 a shared library. We account for that possibility below by 1998 storing information in the relocs_copied field of the hash 1999 table entry. A similar situation occurs when creating 2000 shared libraries and symbol visibility changes render the 2001 symbol local. 2002 2003 If on the other hand, we are creating an executable, we 2004 may need to keep relocations for symbols satisfied by a 2005 dynamic library if we manage to avoid copy relocs for the 2006 symbol. */ 2007 if ((bfd_link_pic (info) 2008 && (sec->flags & SEC_ALLOC) != 0 2009 && (! tilegx_elf_howto_table[r_type].pc_relative 2010 || (h != NULL 2011 && (! info->symbolic 2012 || h->root.type == bfd_link_hash_defweak 2013 || !h->def_regular)))) 2014 || (!bfd_link_pic (info) 2015 && (sec->flags & SEC_ALLOC) != 0 2016 && h != NULL 2017 && (h->root.type == bfd_link_hash_defweak 2018 || !h->def_regular))) 2019 { 2020 struct tilegx_elf_dyn_relocs *p; 2021 struct tilegx_elf_dyn_relocs **head; 2022 2023 /* When creating a shared object, we must copy these 2024 relocs into the output file. We create a reloc 2025 section in dynobj and make room for the reloc. */ 2026 if (sreloc == NULL) 2027 { 2028 sreloc = _bfd_elf_make_dynamic_reloc_section 2029 (sec, htab->elf.dynobj, htab->word_align_power, abfd, 2030 /*rela?*/ TRUE); 2031 2032 if (sreloc == NULL) 2033 return FALSE; 2034 } 2035 2036 /* If this is a global symbol, we count the number of 2037 relocations we need for this symbol. */ 2038 if (h != NULL) 2039 head = 2040 &((struct tilegx_elf_link_hash_entry *) h)->dyn_relocs; 2041 else 2042 { 2043 /* Track dynamic relocs needed for local syms too. 2044 We really need local syms available to do this 2045 easily. Oh well. */ 2046 2047 asection *s; 2048 void *vpp; 2049 Elf_Internal_Sym *isym; 2050 2051 isym = bfd_sym_from_r_symndx (&htab->sym_cache, 2052 abfd, r_symndx); 2053 if (isym == NULL) 2054 return FALSE; 2055 2056 s = bfd_section_from_elf_index (abfd, isym->st_shndx); 2057 if (s == NULL) 2058 s = sec; 2059 2060 vpp = &elf_section_data (s)->local_dynrel; 2061 head = (struct tilegx_elf_dyn_relocs **) vpp; 2062 } 2063 2064 p = *head; 2065 if (p == NULL || p->sec != sec) 2066 { 2067 bfd_size_type amt = sizeof *p; 2068 p = ((struct tilegx_elf_dyn_relocs *) 2069 bfd_alloc (htab->elf.dynobj, amt)); 2070 if (p == NULL) 2071 return FALSE; 2072 p->next = *head; 2073 *head = p; 2074 p->sec = sec; 2075 p->count = 0; 2076 p->pc_count = 0; 2077 } 2078 2079 p->count += 1; 2080 if (tilegx_elf_howto_table[r_type].pc_relative) 2081 p->pc_count += 1; 2082 } 2083 2084 break; 2085 2086 case R_TILEGX_GNU_VTINHERIT: 2087 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 2088 return FALSE; 2089 break; 2090 2091 case R_TILEGX_GNU_VTENTRY: 2092 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 2093 return FALSE; 2094 break; 2095 2096 default: 2097 break; 2098 } 2099 } 2100 2101 return TRUE; 2102 } 2103 2104 2105 asection * 2107 tilegx_elf_gc_mark_hook (asection *sec, 2108 struct bfd_link_info *info, 2109 Elf_Internal_Rela *rel, 2110 struct elf_link_hash_entry *h, 2111 Elf_Internal_Sym *sym) 2112 { 2113 if (h != NULL) 2114 { 2115 switch (TILEGX_ELF_R_TYPE (rel->r_info)) 2116 { 2117 case R_TILEGX_GNU_VTINHERIT: 2118 case R_TILEGX_GNU_VTENTRY: 2119 return NULL; 2120 } 2121 } 2122 2123 /* FIXME: The test here, in check_relocs and in relocate_section 2124 dealing with TLS optimization, ought to be !bfd_link_executable (info). */ 2125 if (bfd_link_pic (info)) 2126 { 2127 switch (TILEGX_ELF_R_TYPE (rel->r_info)) 2128 { 2129 case R_TILEGX_TLS_GD_CALL: 2130 /* This reloc implicitly references __tls_get_addr. We know 2131 another reloc will reference the same symbol as the one 2132 on this reloc, so the real symbol and section will be 2133 gc marked when processing the other reloc. That lets 2134 us handle __tls_get_addr here. */ 2135 h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr", 2136 FALSE, FALSE, TRUE); 2137 BFD_ASSERT (h != NULL); 2138 h->mark = 1; 2139 if (h->u.weakdef != NULL) 2140 h->u.weakdef->mark = 1; 2141 sym = NULL; 2142 } 2143 } 2144 2145 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 2146 } 2147 2148 /* Update the got entry reference counts for the section being removed. */ 2149 bfd_boolean 2150 tilegx_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, 2151 asection *sec, const Elf_Internal_Rela *relocs) 2152 { 2153 struct tilegx_elf_link_hash_table *htab; 2154 Elf_Internal_Shdr *symtab_hdr; 2155 struct elf_link_hash_entry **sym_hashes; 2156 bfd_signed_vma *local_got_refcounts; 2157 const Elf_Internal_Rela *rel, *relend; 2158 2159 if (bfd_link_relocatable (info)) 2160 return TRUE; 2161 2162 BFD_ASSERT (is_tilegx_elf (abfd) || sec->reloc_count == 0); 2163 2164 elf_section_data (sec)->local_dynrel = NULL; 2165 2166 htab = tilegx_elf_hash_table (info); 2167 BFD_ASSERT (htab != NULL); 2168 symtab_hdr = &elf_symtab_hdr (abfd); 2169 sym_hashes = elf_sym_hashes (abfd); 2170 local_got_refcounts = elf_local_got_refcounts (abfd); 2171 2172 relend = relocs + sec->reloc_count; 2173 for (rel = relocs; rel < relend; rel++) 2174 { 2175 unsigned long r_symndx; 2176 unsigned int r_type; 2177 struct elf_link_hash_entry *h = NULL; 2178 2179 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info); 2180 if (r_symndx >= symtab_hdr->sh_info) 2181 { 2182 struct tilegx_elf_link_hash_entry *eh; 2183 struct tilegx_elf_dyn_relocs **pp; 2184 struct tilegx_elf_dyn_relocs *p; 2185 2186 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 2187 while (h->root.type == bfd_link_hash_indirect 2188 || h->root.type == bfd_link_hash_warning) 2189 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2190 eh = (struct tilegx_elf_link_hash_entry *) h; 2191 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) 2192 if (p->sec == sec) 2193 { 2194 /* Everything must go for SEC. */ 2195 *pp = p->next; 2196 break; 2197 } 2198 } 2199 2200 r_type = TILEGX_ELF_R_TYPE (rel->r_info); 2201 r_type = tilegx_elf_tls_transition (info, r_type, h != NULL, 2202 sec->sec_flg0); 2203 switch (r_type) 2204 { 2205 case R_TILEGX_IMM16_X0_HW0_GOT: 2206 case R_TILEGX_IMM16_X1_HW0_GOT: 2207 case R_TILEGX_IMM16_X0_HW0_LAST_GOT: 2208 case R_TILEGX_IMM16_X1_HW0_LAST_GOT: 2209 case R_TILEGX_IMM16_X0_HW1_LAST_GOT: 2210 case R_TILEGX_IMM16_X1_HW1_LAST_GOT: 2211 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 2212 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 2213 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 2214 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 2215 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 2216 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 2217 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 2218 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 2219 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 2220 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 2221 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 2222 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 2223 if (h != NULL) 2224 { 2225 if (h->got.refcount > 0) 2226 h->got.refcount--; 2227 } 2228 else 2229 { 2230 if (local_got_refcounts && 2231 local_got_refcounts[r_symndx] > 0) 2232 local_got_refcounts[r_symndx]--; 2233 } 2234 break; 2235 2236 case R_TILEGX_64_PCREL: 2237 case R_TILEGX_32_PCREL: 2238 case R_TILEGX_16_PCREL: 2239 case R_TILEGX_8_PCREL: 2240 case R_TILEGX_IMM16_X0_HW0_PCREL: 2241 case R_TILEGX_IMM16_X1_HW0_PCREL: 2242 case R_TILEGX_IMM16_X0_HW1_PCREL: 2243 case R_TILEGX_IMM16_X1_HW1_PCREL: 2244 case R_TILEGX_IMM16_X0_HW2_PCREL: 2245 case R_TILEGX_IMM16_X1_HW2_PCREL: 2246 case R_TILEGX_IMM16_X0_HW3_PCREL: 2247 case R_TILEGX_IMM16_X1_HW3_PCREL: 2248 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL: 2249 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL: 2250 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL: 2251 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL: 2252 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL: 2253 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL: 2254 if (h != NULL 2255 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 2256 break; 2257 /* Fall through. */ 2258 2259 case R_TILEGX_64: 2260 case R_TILEGX_32: 2261 case R_TILEGX_16: 2262 case R_TILEGX_8: 2263 case R_TILEGX_HW0: 2264 case R_TILEGX_HW1: 2265 case R_TILEGX_HW2: 2266 case R_TILEGX_HW3: 2267 case R_TILEGX_HW0_LAST: 2268 case R_TILEGX_HW1_LAST: 2269 case R_TILEGX_HW2_LAST: 2270 case R_TILEGX_COPY: 2271 case R_TILEGX_GLOB_DAT: 2272 case R_TILEGX_JMP_SLOT: 2273 case R_TILEGX_RELATIVE: 2274 case R_TILEGX_BROFF_X1: 2275 case R_TILEGX_JUMPOFF_X1: 2276 case R_TILEGX_IMM8_X0: 2277 case R_TILEGX_IMM8_Y0: 2278 case R_TILEGX_IMM8_X1: 2279 case R_TILEGX_IMM8_Y1: 2280 case R_TILEGX_DEST_IMM8_X1: 2281 case R_TILEGX_MT_IMM14_X1: 2282 case R_TILEGX_MF_IMM14_X1: 2283 case R_TILEGX_MMSTART_X0: 2284 case R_TILEGX_MMEND_X0: 2285 case R_TILEGX_SHAMT_X0: 2286 case R_TILEGX_SHAMT_X1: 2287 case R_TILEGX_SHAMT_Y0: 2288 case R_TILEGX_SHAMT_Y1: 2289 case R_TILEGX_IMM16_X0_HW0: 2290 case R_TILEGX_IMM16_X1_HW0: 2291 case R_TILEGX_IMM16_X0_HW1: 2292 case R_TILEGX_IMM16_X1_HW1: 2293 case R_TILEGX_IMM16_X0_HW2: 2294 case R_TILEGX_IMM16_X1_HW2: 2295 case R_TILEGX_IMM16_X0_HW3: 2296 case R_TILEGX_IMM16_X1_HW3: 2297 case R_TILEGX_IMM16_X0_HW0_LAST: 2298 case R_TILEGX_IMM16_X1_HW0_LAST: 2299 case R_TILEGX_IMM16_X0_HW1_LAST: 2300 case R_TILEGX_IMM16_X1_HW1_LAST: 2301 case R_TILEGX_IMM16_X0_HW2_LAST: 2302 case R_TILEGX_IMM16_X1_HW2_LAST: 2303 if (bfd_link_pic (info)) 2304 break; 2305 /* Fall through. */ 2306 2307 case R_TILEGX_JUMPOFF_X1_PLT: 2308 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL: 2309 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL: 2310 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL: 2311 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL: 2312 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL: 2313 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL: 2314 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL: 2315 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL: 2316 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL: 2317 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL: 2318 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL: 2319 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL: 2320 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL: 2321 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL: 2322 if (h != NULL) 2323 { 2324 if (h->plt.refcount > 0) 2325 h->plt.refcount--; 2326 } 2327 break; 2328 2329 default: 2330 break; 2331 } 2332 } 2333 2334 return TRUE; 2335 } 2336 2337 /* Adjust a symbol defined by a dynamic object and referenced by a 2338 regular object. The current definition is in some section of the 2339 dynamic object, but we're not including those sections. We have to 2340 change the definition to something the rest of the link can 2341 understand. */ 2342 2343 bfd_boolean 2344 tilegx_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 2345 struct elf_link_hash_entry *h) 2346 { 2347 struct tilegx_elf_link_hash_table *htab; 2348 struct tilegx_elf_link_hash_entry * eh; 2349 struct tilegx_elf_dyn_relocs *p; 2350 bfd *dynobj; 2351 asection *s; 2352 2353 htab = tilegx_elf_hash_table (info); 2354 BFD_ASSERT (htab != NULL); 2355 2356 dynobj = htab->elf.dynobj; 2357 2358 /* Make sure we know what is going on here. */ 2359 BFD_ASSERT (dynobj != NULL 2360 && (h->needs_plt 2361 || h->u.weakdef != NULL 2362 || (h->def_dynamic 2363 && h->ref_regular 2364 && !h->def_regular))); 2365 2366 /* If this is a function, put it in the procedure linkage table. We 2367 will fill in the contents of the procedure linkage table later 2368 (although we could actually do it here). */ 2369 if (h->type == STT_FUNC || h->needs_plt) 2370 { 2371 if (h->plt.refcount <= 0 2372 || SYMBOL_CALLS_LOCAL (info, h) 2373 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT 2374 && h->root.type == bfd_link_hash_undefweak)) 2375 { 2376 /* This case can occur if we saw a R_TILEGX_JUMPOFF_X1_PLT 2377 reloc in an input file, but the symbol was never referred 2378 to by a dynamic object, or if all references were garbage 2379 collected. In such a case, we don't actually need to build 2380 a procedure linkage table, and we can just do a 2381 R_TILEGX_JUMPOFF_X1 relocation instead. */ 2382 h->plt.offset = (bfd_vma) -1; 2383 h->needs_plt = 0; 2384 } 2385 2386 return TRUE; 2387 } 2388 else 2389 h->plt.offset = (bfd_vma) -1; 2390 2391 /* If this is a weak symbol, and there is a real definition, the 2392 processor independent code will have arranged for us to see the 2393 real definition first, and we can just use the same value. */ 2394 if (h->u.weakdef != NULL) 2395 { 2396 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 2397 || h->u.weakdef->root.type == bfd_link_hash_defweak); 2398 h->root.u.def.section = h->u.weakdef->root.u.def.section; 2399 h->root.u.def.value = h->u.weakdef->root.u.def.value; 2400 return TRUE; 2401 } 2402 2403 /* This is a reference to a symbol defined by a dynamic object which 2404 is not a function. */ 2405 2406 /* If we are creating a shared library, we must presume that the 2407 only references to the symbol are via the global offset table. 2408 For such cases we need not do anything here; the relocations will 2409 be handled correctly by relocate_section. */ 2410 if (bfd_link_pic (info)) 2411 return TRUE; 2412 2413 /* If there are no references to this symbol that do not use the 2414 GOT, we don't need to generate a copy reloc. */ 2415 if (!h->non_got_ref) 2416 return TRUE; 2417 2418 /* If -z nocopyreloc was given, we won't generate them either. */ 2419 if (info->nocopyreloc) 2420 { 2421 h->non_got_ref = 0; 2422 return TRUE; 2423 } 2424 2425 eh = (struct tilegx_elf_link_hash_entry *) h; 2426 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2427 { 2428 s = p->sec->output_section; 2429 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2430 break; 2431 } 2432 2433 /* If we didn't find any dynamic relocs in read-only sections, then 2434 we'll be keeping the dynamic relocs and avoiding the copy reloc. */ 2435 if (p == NULL) 2436 { 2437 h->non_got_ref = 0; 2438 return TRUE; 2439 } 2440 2441 /* We must allocate the symbol in our .dynbss section, which will 2442 become part of the .bss section of the executable. There will be 2443 an entry for this symbol in the .dynsym section. The dynamic 2444 object will contain position independent code, so all references 2445 from the dynamic object to this symbol will go through the global 2446 offset table. The dynamic linker will use the .dynsym entry to 2447 determine the address it must put in the global offset table, so 2448 both the dynamic object and the regular object will refer to the 2449 same memory location for the variable. */ 2450 2451 /* We must generate a R_TILEGX_COPY reloc to tell the dynamic linker 2452 to copy the initial value out of the dynamic object and into the 2453 runtime process image. We need to remember the offset into the 2454 .rel.bss section we are going to use. */ 2455 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) 2456 { 2457 htab->srelbss->size += TILEGX_ELF_RELA_BYTES (htab); 2458 h->needs_copy = 1; 2459 } 2460 2461 return _bfd_elf_adjust_dynamic_copy (info, h, htab->sdynbss); 2462 } 2463 2464 /* Allocate space in .plt, .got and associated reloc sections for 2465 dynamic relocs. */ 2466 2467 static bfd_boolean 2468 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) 2469 { 2470 struct bfd_link_info *info; 2471 struct tilegx_elf_link_hash_table *htab; 2472 struct tilegx_elf_link_hash_entry *eh; 2473 struct tilegx_elf_dyn_relocs *p; 2474 2475 if (h->root.type == bfd_link_hash_indirect) 2476 return TRUE; 2477 2478 info = (struct bfd_link_info *) inf; 2479 htab = tilegx_elf_hash_table (info); 2480 BFD_ASSERT (htab != NULL); 2481 2482 if (htab->elf.dynamic_sections_created 2483 && h->plt.refcount > 0) 2484 { 2485 /* Make sure this symbol is output as a dynamic symbol. 2486 Undefined weak syms won't yet be marked as dynamic. */ 2487 if (h->dynindx == -1 2488 && !h->forced_local) 2489 { 2490 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2491 return FALSE; 2492 } 2493 2494 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) 2495 { 2496 asection *s = htab->elf.splt; 2497 2498 /* Allocate room for the header and tail. */ 2499 if (s->size == 0) 2500 { 2501 s->size = PLT_ENTRY_SIZE; 2502 } 2503 2504 h->plt.offset = s->size - PLT_ENTRY_SIZE + PLT_HEADER_SIZE; 2505 2506 /* If this symbol is not defined in a regular file, and we are 2507 not generating a shared library, then set the symbol to this 2508 location in the .plt. This is required to make function 2509 pointers compare as equal between the normal executable and 2510 the shared library. */ 2511 if (! bfd_link_pic (info) 2512 && !h->def_regular) 2513 { 2514 h->root.u.def.section = s; 2515 h->root.u.def.value = h->plt.offset; 2516 } 2517 2518 /* Make room for this entry. */ 2519 s->size += PLT_ENTRY_SIZE; 2520 2521 /* We also need to make an entry in the .got.plt section. */ 2522 htab->elf.sgotplt->size += GOT_ENTRY_SIZE (htab); 2523 2524 /* We also need to make an entry in the .rela.plt section. */ 2525 htab->elf.srelplt->size += TILEGX_ELF_RELA_BYTES (htab); 2526 } 2527 else 2528 { 2529 h->plt.offset = (bfd_vma) -1; 2530 h->needs_plt = 0; 2531 } 2532 } 2533 else 2534 { 2535 h->plt.offset = (bfd_vma) -1; 2536 h->needs_plt = 0; 2537 } 2538 2539 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE 2540 requiring no TLS entry. */ 2541 if (h->got.refcount > 0 2542 && !htab->disable_le_transition 2543 && !bfd_link_pic (info) 2544 && h->dynindx == -1 2545 && tilegx_elf_hash_entry(h)->tls_type == GOT_TLS_IE) 2546 h->got.offset = (bfd_vma) -1; 2547 else if (h->got.refcount > 0) 2548 { 2549 asection *s; 2550 bfd_boolean dyn; 2551 int tls_type = tilegx_elf_hash_entry(h)->tls_type; 2552 2553 /* Make sure this symbol is output as a dynamic symbol. 2554 Undefined weak syms won't yet be marked as dynamic. */ 2555 if (h->dynindx == -1 2556 && !h->forced_local) 2557 { 2558 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2559 return FALSE; 2560 } 2561 2562 s = htab->elf.sgot; 2563 h->got.offset = s->size; 2564 s->size += TILEGX_ELF_WORD_BYTES (htab); 2565 /* TLS_GD entries need 2 consecutive GOT slots. */ 2566 if (tls_type == GOT_TLS_GD) 2567 s->size += TILEGX_ELF_WORD_BYTES (htab); 2568 dyn = htab->elf.dynamic_sections_created; 2569 /* TLS_IE needs one dynamic relocation, 2570 TLS_GD needs two if local symbol and two if global. */ 2571 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE) 2572 htab->elf.srelgot->size += 2 * TILEGX_ELF_RELA_BYTES (htab); 2573 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2574 bfd_link_pic (info), 2575 h)) 2576 htab->elf.srelgot->size += TILEGX_ELF_RELA_BYTES (htab); 2577 } 2578 else 2579 h->got.offset = (bfd_vma) -1; 2580 2581 eh = (struct tilegx_elf_link_hash_entry *) h; 2582 if (eh->dyn_relocs == NULL) 2583 return TRUE; 2584 2585 /* In the shared -Bsymbolic case, discard space allocated for 2586 dynamic pc-relative relocs against symbols which turn out to be 2587 defined in regular objects. For the normal shared case, discard 2588 space for pc-relative relocs that have become local due to symbol 2589 visibility changes. */ 2590 2591 if (bfd_link_pic (info)) 2592 { 2593 if (SYMBOL_CALLS_LOCAL (info, h)) 2594 { 2595 struct tilegx_elf_dyn_relocs **pp; 2596 2597 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) 2598 { 2599 p->count -= p->pc_count; 2600 p->pc_count = 0; 2601 if (p->count == 0) 2602 *pp = p->next; 2603 else 2604 pp = &p->next; 2605 } 2606 } 2607 2608 /* Also discard relocs on undefined weak syms with non-default 2609 visibility. */ 2610 if (eh->dyn_relocs != NULL 2611 && h->root.type == bfd_link_hash_undefweak) 2612 { 2613 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) 2614 eh->dyn_relocs = NULL; 2615 2616 /* Make sure undefined weak symbols are output as a dynamic 2617 symbol in PIEs. */ 2618 else if (h->dynindx == -1 2619 && !h->forced_local) 2620 { 2621 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2622 return FALSE; 2623 } 2624 } 2625 } 2626 else 2627 { 2628 /* For the non-shared case, discard space for relocs against 2629 symbols which turn out to need copy relocs or are not 2630 dynamic. */ 2631 2632 if (!h->non_got_ref 2633 && ((h->def_dynamic 2634 && !h->def_regular) 2635 || (htab->elf.dynamic_sections_created 2636 && (h->root.type == bfd_link_hash_undefweak 2637 || h->root.type == bfd_link_hash_undefined)))) 2638 { 2639 /* Make sure this symbol is output as a dynamic symbol. 2640 Undefined weak syms won't yet be marked as dynamic. */ 2641 if (h->dynindx == -1 2642 && !h->forced_local) 2643 { 2644 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2645 return FALSE; 2646 } 2647 2648 /* If that succeeded, we know we'll be keeping all the 2649 relocs. */ 2650 if (h->dynindx != -1) 2651 goto keep; 2652 } 2653 2654 eh->dyn_relocs = NULL; 2655 2656 keep: ; 2657 } 2658 2659 /* Finally, allocate space. */ 2660 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2661 { 2662 asection *sreloc = elf_section_data (p->sec)->sreloc; 2663 sreloc->size += p->count * TILEGX_ELF_RELA_BYTES (htab); 2664 } 2665 2666 return TRUE; 2667 } 2668 2669 /* Find any dynamic relocs that apply to read-only sections. */ 2670 2671 static bfd_boolean 2672 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) 2673 { 2674 struct tilegx_elf_link_hash_entry *eh; 2675 struct tilegx_elf_dyn_relocs *p; 2676 2677 eh = (struct tilegx_elf_link_hash_entry *) h; 2678 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2679 { 2680 asection *s = p->sec->output_section; 2681 2682 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2683 { 2684 struct bfd_link_info *info = (struct bfd_link_info *) inf; 2685 2686 info->flags |= DF_TEXTREL; 2687 2688 /* Not an error, just cut short the traversal. */ 2689 return FALSE; 2690 } 2691 } 2692 return TRUE; 2693 } 2694 2695 /* Return true if the dynamic symbol for a given section should be 2696 omitted when creating a shared library. */ 2697 2698 bfd_boolean 2699 tilegx_elf_omit_section_dynsym (bfd *output_bfd, 2700 struct bfd_link_info *info, 2701 asection *p) 2702 { 2703 /* We keep the .got section symbol so that explicit relocations 2704 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode 2705 can be turned into relocations against the .got symbol. */ 2706 if (strcmp (p->name, ".got") == 0) 2707 return FALSE; 2708 2709 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p); 2710 } 2711 2712 bfd_boolean 2713 tilegx_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 2714 struct bfd_link_info *info) 2715 { 2716 struct tilegx_elf_link_hash_table *htab; 2717 bfd *dynobj; 2718 asection *s; 2719 bfd *ibfd; 2720 2721 htab = tilegx_elf_hash_table (info); 2722 BFD_ASSERT (htab != NULL); 2723 dynobj = htab->elf.dynobj; 2724 BFD_ASSERT (dynobj != NULL); 2725 2726 if (elf_hash_table (info)->dynamic_sections_created) 2727 { 2728 /* Set the contents of the .interp section to the interpreter. */ 2729 if (bfd_link_executable (info) && !info->nointerp) 2730 { 2731 s = bfd_get_linker_section (dynobj, ".interp"); 2732 BFD_ASSERT (s != NULL); 2733 s->size = strlen (htab->dynamic_interpreter) + 1; 2734 s->contents = (unsigned char *) htab->dynamic_interpreter; 2735 } 2736 } 2737 2738 /* Set up .got offsets for local syms, and space for local dynamic 2739 relocs. */ 2740 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) 2741 { 2742 bfd_signed_vma *local_got; 2743 bfd_signed_vma *end_local_got; 2744 char *local_tls_type; 2745 bfd_size_type locsymcount; 2746 Elf_Internal_Shdr *symtab_hdr; 2747 asection *srel; 2748 2749 if (! is_tilegx_elf (ibfd)) 2750 continue; 2751 2752 for (s = ibfd->sections; s != NULL; s = s->next) 2753 { 2754 struct tilegx_elf_dyn_relocs *p; 2755 2756 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) 2757 { 2758 if (!bfd_is_abs_section (p->sec) 2759 && bfd_is_abs_section (p->sec->output_section)) 2760 { 2761 /* Input section has been discarded, either because 2762 it is a copy of a linkonce section or due to 2763 linker script /DISCARD/, so we'll be discarding 2764 the relocs too. */ 2765 } 2766 else if (p->count != 0) 2767 { 2768 srel = elf_section_data (p->sec)->sreloc; 2769 srel->size += p->count * TILEGX_ELF_RELA_BYTES (htab); 2770 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 2771 info->flags |= DF_TEXTREL; 2772 } 2773 } 2774 } 2775 2776 local_got = elf_local_got_refcounts (ibfd); 2777 if (!local_got) 2778 continue; 2779 2780 symtab_hdr = &elf_symtab_hdr (ibfd); 2781 locsymcount = symtab_hdr->sh_info; 2782 end_local_got = local_got + locsymcount; 2783 local_tls_type = _bfd_tilegx_elf_local_got_tls_type (ibfd); 2784 s = htab->elf.sgot; 2785 srel = htab->elf.srelgot; 2786 for (; local_got < end_local_got; ++local_got, ++local_tls_type) 2787 { 2788 if (*local_got > 0) 2789 { 2790 *local_got = s->size; 2791 s->size += TILEGX_ELF_WORD_BYTES (htab); 2792 if (*local_tls_type == GOT_TLS_GD) 2793 s->size += TILEGX_ELF_WORD_BYTES (htab); 2794 if (bfd_link_pic (info) 2795 || *local_tls_type == GOT_TLS_GD 2796 || *local_tls_type == GOT_TLS_IE) 2797 srel->size += TILEGX_ELF_RELA_BYTES (htab); 2798 } 2799 else 2800 *local_got = (bfd_vma) -1; 2801 } 2802 } 2803 2804 /* Allocate global sym .plt and .got entries, and space for global 2805 sym dynamic relocs. */ 2806 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); 2807 2808 if (elf_hash_table (info)->dynamic_sections_created) 2809 { 2810 /* If the .got section is more than 0x8000 bytes, we add 2811 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16 2812 bit relocations have a greater chance of working. */ 2813 if (htab->elf.sgot->size >= 0x8000 2814 && elf_hash_table (info)->hgot->root.u.def.value == 0) 2815 elf_hash_table (info)->hgot->root.u.def.value = 0x8000; 2816 } 2817 2818 if (htab->elf.sgotplt) 2819 { 2820 struct elf_link_hash_entry *got; 2821 got = elf_link_hash_lookup (elf_hash_table (info), 2822 "_GLOBAL_OFFSET_TABLE_", 2823 FALSE, FALSE, FALSE); 2824 2825 /* Don't allocate .got.plt section if there are no GOT nor PLT 2826 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */ 2827 if ((got == NULL 2828 || !got->ref_regular_nonweak) 2829 && (htab->elf.sgotplt->size 2830 == (unsigned)GOTPLT_HEADER_SIZE (htab)) 2831 && (htab->elf.splt == NULL 2832 || htab->elf.splt->size == 0) 2833 && (htab->elf.sgot == NULL 2834 || (htab->elf.sgot->size 2835 == get_elf_backend_data (output_bfd)->got_header_size))) 2836 htab->elf.sgotplt->size = 0; 2837 } 2838 2839 /* The check_relocs and adjust_dynamic_symbol entry points have 2840 determined the sizes of the various dynamic sections. Allocate 2841 memory for them. */ 2842 for (s = dynobj->sections; s != NULL; s = s->next) 2843 { 2844 if ((s->flags & SEC_LINKER_CREATED) == 0) 2845 continue; 2846 2847 if (s == htab->elf.splt 2848 || s == htab->elf.sgot 2849 || s == htab->elf.sgotplt 2850 || s == htab->sdynbss) 2851 { 2852 /* Strip this section if we don't need it; see the 2853 comment below. */ 2854 } 2855 else if (strncmp (s->name, ".rela", 5) == 0) 2856 { 2857 if (s->size != 0) 2858 { 2859 /* We use the reloc_count field as a counter if we need 2860 to copy relocs into the output file. */ 2861 s->reloc_count = 0; 2862 } 2863 } 2864 else 2865 { 2866 /* It's not one of our sections. */ 2867 continue; 2868 } 2869 2870 if (s->size == 0) 2871 { 2872 /* If we don't need this section, strip it from the 2873 output file. This is mostly to handle .rela.bss and 2874 .rela.plt. We must create both sections in 2875 create_dynamic_sections, because they must be created 2876 before the linker maps input sections to output 2877 sections. The linker does that before 2878 adjust_dynamic_symbol is called, and it is that 2879 function which decides whether anything needs to go 2880 into these sections. */ 2881 s->flags |= SEC_EXCLUDE; 2882 continue; 2883 } 2884 2885 if ((s->flags & SEC_HAS_CONTENTS) == 0) 2886 continue; 2887 2888 /* Allocate memory for the section contents. Zero the memory 2889 for the benefit of .rela.plt, which has 4 unused entries 2890 at the beginning, and we don't want garbage. */ 2891 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); 2892 if (s->contents == NULL) 2893 return FALSE; 2894 } 2895 2896 if (elf_hash_table (info)->dynamic_sections_created) 2897 { 2898 /* Add some entries to the .dynamic section. We fill in the 2899 values later, in tilegx_elf_finish_dynamic_sections, but we 2900 must add the entries now so that we get the correct size for 2901 the .dynamic section. The DT_DEBUG entry is filled in by the 2902 dynamic linker and used by the debugger. */ 2903 #define add_dynamic_entry(TAG, VAL) \ 2904 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 2905 2906 if (bfd_link_executable (info)) 2907 { 2908 if (!add_dynamic_entry (DT_DEBUG, 0)) 2909 return FALSE; 2910 } 2911 2912 if (htab->elf.srelplt->size != 0) 2913 { 2914 if (!add_dynamic_entry (DT_PLTGOT, 0) 2915 || !add_dynamic_entry (DT_PLTRELSZ, 0) 2916 || !add_dynamic_entry (DT_PLTREL, DT_RELA) 2917 || !add_dynamic_entry (DT_JMPREL, 0)) 2918 return FALSE; 2919 } 2920 2921 if (!add_dynamic_entry (DT_RELA, 0) 2922 || !add_dynamic_entry (DT_RELASZ, 0) 2923 || !add_dynamic_entry (DT_RELAENT, TILEGX_ELF_RELA_BYTES (htab))) 2924 return FALSE; 2925 2926 /* If any dynamic relocs apply to a read-only section, 2927 then we need a DT_TEXTREL entry. */ 2928 if ((info->flags & DF_TEXTREL) == 0) 2929 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); 2930 2931 if (info->flags & DF_TEXTREL) 2932 { 2933 if (!add_dynamic_entry (DT_TEXTREL, 0)) 2934 return FALSE; 2935 } 2936 } 2937 #undef add_dynamic_entry 2938 2939 return TRUE; 2940 } 2941 2942 /* Return the base VMA address which should be subtracted from real addresses 2944 when resolving @dtpoff relocation. 2945 This is PT_TLS segment p_vaddr. */ 2946 2947 static bfd_vma 2948 dtpoff_base (struct bfd_link_info *info) 2949 { 2950 /* If tls_sec is NULL, we should have signalled an error already. */ 2951 if (elf_hash_table (info)->tls_sec == NULL) 2952 return 0; 2953 return elf_hash_table (info)->tls_sec->vma; 2954 } 2955 2956 /* Return the relocation value for @tpoff relocation. */ 2957 2958 static bfd_vma 2959 tpoff (struct bfd_link_info *info, bfd_vma address) 2960 { 2961 struct elf_link_hash_table *htab = elf_hash_table (info); 2962 2963 /* If tls_sec is NULL, we should have signalled an error already. */ 2964 if (htab->tls_sec == NULL) 2965 return 0; 2966 2967 return (address - htab->tls_sec->vma); 2968 } 2969 2970 /* Copy SIZE bits from FROM to TO at address ADDR. */ 2971 2972 static void 2973 tilegx_copy_bits (bfd_byte *addr, int from, int to, int size) 2974 { 2975 int i; 2976 for (i = 0; i < size; i++) 2977 { 2978 int from_byte = (from + i) / 8; 2979 int from_bit = (from + i) % 8; 2980 int to_byte = (to + i) / 8; 2981 int to_bit = (to + i) % 8; 2982 bfd_byte to_mask = 1 << to_bit; 2983 addr[to_byte] = (addr[to_byte] & ~to_mask) 2984 | ((addr[from_byte] >> from_bit << to_bit) & to_mask); 2985 } 2986 } 2987 2988 /* Replace the MASK bits in ADDR with those in INSN, for the next 2989 TILEGX_BUNDLE_SIZE_IN_BYTES bytes. */ 2990 2991 static void 2992 tilegx_replace_insn (bfd_byte *addr, const bfd_byte *mask, 2993 const bfd_byte *insn) 2994 { 2995 int i; 2996 for (i = 0; i < TILEGX_BUNDLE_SIZE_IN_BYTES; i++) 2997 { 2998 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]); 2999 } 3000 } 3001 3002 /* Mask to extract the bits corresponding to an instruction in a 3003 specific pipe of a bundle. */ 3004 static const bfd_byte insn_mask_X1[] = { 3005 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x3f 3006 }; 3007 3008 /* Mask to extract the bits corresponding to an instruction in a 3009 specific pipe of a bundle, minus the destination operand and the 3010 first source operand. */ 3011 static const bfd_byte insn_mask_X0_no_dest_no_srca[] = { 3012 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00 3013 }; 3014 3015 static const bfd_byte insn_mask_X1_no_dest_no_srca[] = { 3016 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x3f 3017 }; 3018 3019 static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = { 3020 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00 3021 }; 3022 static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = { 3023 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x3c 3024 }; 3025 3026 /* Mask to extract the bits corresponding to an instruction in a 3027 specific pipe of a bundle, minus the register operands. */ 3028 static const bfd_byte insn_mask_X0_no_operand[] = { 3029 0x00, 0x00, 0xfc, 0x7f, 0x00, 0x00, 0x00, 0x00 3030 }; 3031 3032 static const bfd_byte insn_mask_X1_no_operand[] = { 3033 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x3f 3034 }; 3035 3036 static const bfd_byte insn_mask_Y0_no_operand[] = { 3037 0x00, 0x00, 0x0c, 0x78, 0x00, 0x00, 0x00, 0x00 3038 }; 3039 3040 static const bfd_byte insn_mask_Y1_no_operand[] = { 3041 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x3c 3042 }; 3043 3044 /* Various instructions synthesized to support tls references. */ 3045 3046 /* ld r0, r0 in the X1 pipe, used for tls ie. */ 3047 static const bfd_byte insn_tls_ie_ld_X1[] = { 3048 0x00, 0x00, 0x00, 0x00, 0x00, 0xe8, 0x6a, 0x28 3049 }; 3050 3051 /* ld4s r0, r0 in the X1 pipe, used for tls ie. */ 3052 static const bfd_byte insn_tls_ie_ld4s_X1[] = { 3053 0x00, 0x00, 0x00, 0x00, 0x00, 0x98, 0x6a, 0x28 3054 }; 3055 3056 /* add r0, r0, tp in various pipes, used for tls ie. */ 3057 static const bfd_byte insn_tls_ie_add_X0X1[] = { 3058 0x00, 0x50, 0x0f, 0x50, 0x00, 0xa8, 0x07, 0x28 3059 }; 3060 static const bfd_byte insn_tls_ie_add_Y0Y1[] = { 3061 0x00, 0x50, 0x27, 0x2c, 0x00, 0xa8, 0x13, 0x9a 3062 }; 3063 3064 /* addx r0, r0, tp in various pipes, used for tls ie. */ 3065 static const bfd_byte insn_tls_ie_addx_X0X1[] = { 3066 0x00, 0x50, 0x0b, 0x50, 0x00, 0xa8, 0x05, 0x28 3067 }; 3068 static const bfd_byte insn_tls_ie_addx_Y0Y1[] = { 3069 0x00, 0x50, 0x03, 0x2c, 0x00, 0xa8, 0x01, 0x9a 3070 }; 3071 3072 /* move r0, r0 in various pipes, used for tls gd. */ 3073 static const bfd_byte insn_tls_gd_add_X0X1[] = { 3074 0x00, 0xf0, 0x07, 0x51, 0x00, 0xf8, 0x3b, 0x28 3075 }; 3076 static const bfd_byte insn_tls_gd_add_Y0Y1[] = { 3077 0x00, 0xf0, 0x0b, 0x54, 0x00, 0xf8, 0x05, 0xae 3078 }; 3079 3080 static const bfd_byte *insn_move_X0X1 = insn_tls_gd_add_X0X1; 3081 static const bfd_byte *insn_move_Y0Y1 = insn_tls_gd_add_Y0Y1; 3082 3083 static const bfd_byte *insn_add_X0X1 = insn_tls_ie_add_X0X1; 3084 static const bfd_byte *insn_add_Y0Y1 = insn_tls_ie_add_Y0Y1; 3085 3086 static const bfd_byte *insn_addx_X0X1 = insn_tls_ie_addx_X0X1; 3087 static const bfd_byte *insn_addx_Y0Y1 = insn_tls_ie_addx_Y0Y1; 3088 3089 /* Relocate an TILEGX ELF section. 3090 3091 The RELOCATE_SECTION function is called by the new ELF backend linker 3092 to handle the relocations for a section. 3093 3094 The relocs are always passed as Rela structures. 3095 3096 This function is responsible for adjusting the section contents as 3097 necessary, and (if generating a relocatable output file) adjusting 3098 the reloc addend as necessary. 3099 3100 This function does not have to worry about setting the reloc 3101 address or the reloc symbol index. 3102 3103 LOCAL_SYMS is a pointer to the swapped in local symbols. 3104 3105 LOCAL_SECTIONS is an array giving the section in the input file 3106 corresponding to the st_shndx field of each local symbol. 3107 3108 The global hash table entry for the global symbols can be found 3109 via elf_sym_hashes (input_bfd). 3110 3111 When generating relocatable output, this function must handle 3112 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 3113 going to be the section symbol corresponding to the output 3114 section, which means that the addend must be adjusted 3115 accordingly. */ 3116 3117 bfd_boolean 3118 tilegx_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, 3119 bfd *input_bfd, asection *input_section, 3120 bfd_byte *contents, Elf_Internal_Rela *relocs, 3121 Elf_Internal_Sym *local_syms, 3122 asection **local_sections) 3123 { 3124 struct tilegx_elf_link_hash_table *htab; 3125 Elf_Internal_Shdr *symtab_hdr; 3126 struct elf_link_hash_entry **sym_hashes; 3127 bfd_vma *local_got_offsets; 3128 bfd_vma got_base; 3129 asection *sreloc; 3130 Elf_Internal_Rela *rel; 3131 Elf_Internal_Rela *relend; 3132 int num_relocs; 3133 3134 htab = tilegx_elf_hash_table (info); 3135 BFD_ASSERT (htab != NULL); 3136 symtab_hdr = &elf_symtab_hdr (input_bfd); 3137 sym_hashes = elf_sym_hashes (input_bfd); 3138 local_got_offsets = elf_local_got_offsets (input_bfd); 3139 3140 if (elf_hash_table (info)->hgot == NULL) 3141 got_base = 0; 3142 else 3143 got_base = elf_hash_table (info)->hgot->root.u.def.value; 3144 3145 sreloc = elf_section_data (input_section)->sreloc; 3146 3147 rel = relocs; 3148 num_relocs = input_section->reloc_count; 3149 relend = relocs + num_relocs; 3150 for (; rel < relend; rel++) 3151 { 3152 int r_type, tls_type; 3153 bfd_boolean is_tls_iele, is_tls_le; 3154 reloc_howto_type *howto; 3155 unsigned long r_symndx; 3156 struct elf_link_hash_entry *h; 3157 Elf_Internal_Sym *sym; 3158 tilegx_create_func create_func; 3159 asection *sec; 3160 bfd_vma relocation; 3161 bfd_reloc_status_type r; 3162 const char *name; 3163 bfd_vma off; 3164 bfd_boolean is_plt = FALSE; 3165 3166 bfd_boolean unresolved_reloc; 3167 3168 r_type = TILEGX_ELF_R_TYPE (rel->r_info); 3169 if (r_type == R_TILEGX_GNU_VTINHERIT 3170 || r_type == R_TILEGX_GNU_VTENTRY) 3171 continue; 3172 3173 if ((unsigned int)r_type >= ARRAY_SIZE (tilegx_elf_howto_table)) 3174 { 3175 /* Not clear if we need to check here, but just be paranoid. */ 3176 (*_bfd_error_handler) 3177 (_("%B: unrecognized relocation (0x%x) in section `%A'"), 3178 input_bfd, r_type, input_section); 3179 bfd_set_error (bfd_error_bad_value); 3180 return FALSE; 3181 } 3182 3183 howto = tilegx_elf_howto_table + r_type; 3184 3185 /* This is a final link. */ 3186 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info); 3187 h = NULL; 3188 sym = NULL; 3189 sec = NULL; 3190 unresolved_reloc = FALSE; 3191 if (r_symndx < symtab_hdr->sh_info) 3192 { 3193 sym = local_syms + r_symndx; 3194 sec = local_sections[r_symndx]; 3195 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 3196 } 3197 else 3198 { 3199 bfd_boolean warned ATTRIBUTE_UNUSED; 3200 bfd_boolean ignored ATTRIBUTE_UNUSED; 3201 3202 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 3203 r_symndx, symtab_hdr, sym_hashes, 3204 h, sec, relocation, 3205 unresolved_reloc, warned, ignored); 3206 if (warned) 3207 { 3208 /* To avoid generating warning messages about truncated 3209 relocations, set the relocation's address to be the same as 3210 the start of this section. */ 3211 if (input_section->output_section != NULL) 3212 relocation = input_section->output_section->vma; 3213 else 3214 relocation = 0; 3215 } 3216 } 3217 3218 if (sec != NULL && discarded_section (sec)) 3219 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 3220 rel, 1, relend, howto, 0, contents); 3221 3222 if (bfd_link_relocatable (info)) 3223 continue; 3224 3225 if (h != NULL) 3226 name = h->root.root.string; 3227 else 3228 { 3229 name = (bfd_elf_string_from_elf_section 3230 (input_bfd, symtab_hdr->sh_link, sym->st_name)); 3231 if (name == NULL || *name == '\0') 3232 name = bfd_section_name (input_bfd, sec); 3233 } 3234 3235 switch (r_type) 3236 { 3237 case R_TILEGX_TLS_GD_CALL: 3238 case R_TILEGX_IMM8_X0_TLS_GD_ADD: 3239 case R_TILEGX_IMM8_Y0_TLS_GD_ADD: 3240 case R_TILEGX_IMM8_X1_TLS_GD_ADD: 3241 case R_TILEGX_IMM8_Y1_TLS_GD_ADD: 3242 case R_TILEGX_IMM8_X0_TLS_ADD: 3243 case R_TILEGX_IMM8_Y0_TLS_ADD: 3244 case R_TILEGX_IMM8_X1_TLS_ADD: 3245 case R_TILEGX_IMM8_Y1_TLS_ADD: 3246 tls_type = GOT_UNKNOWN; 3247 if (h == NULL && local_got_offsets) 3248 tls_type = 3249 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx]; 3250 else if (h != NULL) 3251 tls_type = tilegx_elf_hash_entry(h)->tls_type; 3252 3253 is_tls_iele = (! bfd_link_pic (info) || tls_type == GOT_TLS_IE); 3254 is_tls_le = is_tls_iele && (!input_section->sec_flg0 3255 && !bfd_link_pic (info) 3256 && (h == NULL || h->dynindx == -1)); 3257 3258 if (r_type == R_TILEGX_TLS_GD_CALL) 3259 { 3260 if (is_tls_le) 3261 { 3262 /* GD -> LE */ 3263 tilegx_replace_insn (contents + rel->r_offset, 3264 insn_mask_X1, insn_move_X0X1); 3265 continue; 3266 } 3267 else if (is_tls_iele) 3268 { 3269 /* GD -> IE */ 3270 if (ABI_64_P (output_bfd)) 3271 tilegx_replace_insn (contents + rel->r_offset, 3272 insn_mask_X1, insn_tls_ie_ld_X1); 3273 else 3274 tilegx_replace_insn (contents + rel->r_offset, 3275 insn_mask_X1, insn_tls_ie_ld4s_X1); 3276 continue; 3277 } 3278 3279 /* GD -> GD */ 3280 h = (struct elf_link_hash_entry *) 3281 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE, 3282 FALSE, TRUE); 3283 BFD_ASSERT (h != NULL); 3284 r_type = R_TILEGX_JUMPOFF_X1_PLT; 3285 howto = tilegx_elf_howto_table + r_type; 3286 } 3287 else if (r_type == R_TILEGX_IMM8_X0_TLS_ADD 3288 || r_type == R_TILEGX_IMM8_X1_TLS_ADD 3289 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD 3290 || r_type == R_TILEGX_IMM8_Y1_TLS_ADD) 3291 { 3292 bfd_boolean is_pipe0 = 3293 (r_type == R_TILEGX_IMM8_X0_TLS_ADD 3294 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD); 3295 bfd_boolean is_X0X1 = 3296 (r_type == R_TILEGX_IMM8_X0_TLS_ADD 3297 || r_type == R_TILEGX_IMM8_X1_TLS_ADD); 3298 int dest_begin = is_pipe0 ? 0 : 31; 3299 int src_begin; 3300 const bfd_byte *insn; 3301 const bfd_byte *mask = NULL; 3302 3303 if (is_tls_le) 3304 { 3305 /* 1. copy dest operand into the first source operand. 3306 2. change the opcode to "move". */ 3307 src_begin = is_pipe0 ? 6 : 37; 3308 insn = is_X0X1 ? insn_move_X0X1 : insn_move_Y0Y1; 3309 3310 switch (r_type) 3311 { 3312 case R_TILEGX_IMM8_X0_TLS_ADD: 3313 mask = insn_mask_X0_no_dest_no_srca; 3314 break; 3315 case R_TILEGX_IMM8_X1_TLS_ADD: 3316 mask = insn_mask_X1_no_dest_no_srca; 3317 break; 3318 case R_TILEGX_IMM8_Y0_TLS_ADD: 3319 mask = insn_mask_Y0_no_dest_no_srca; 3320 break; 3321 case R_TILEGX_IMM8_Y1_TLS_ADD: 3322 mask = insn_mask_Y1_no_dest_no_srca; 3323 break; 3324 } 3325 } 3326 else 3327 { 3328 /* 1. copy dest operand into the second source operand. 3329 2. change the opcode to "add". */ 3330 src_begin = is_pipe0 ? 12 : 43; 3331 if (ABI_64_P (output_bfd)) 3332 insn = is_X0X1 ? insn_add_X0X1 : insn_add_Y0Y1; 3333 else 3334 insn = is_X0X1 ? insn_addx_X0X1 : insn_addx_Y0Y1; 3335 3336 switch (r_type) 3337 { 3338 case R_TILEGX_IMM8_X0_TLS_ADD: 3339 mask = insn_mask_X0_no_operand; 3340 break; 3341 case R_TILEGX_IMM8_X1_TLS_ADD: 3342 mask = insn_mask_X1_no_operand; 3343 break; 3344 case R_TILEGX_IMM8_Y0_TLS_ADD: 3345 mask = insn_mask_Y0_no_operand; 3346 break; 3347 case R_TILEGX_IMM8_Y1_TLS_ADD: 3348 mask = insn_mask_Y1_no_operand; 3349 break; 3350 } 3351 } 3352 3353 tilegx_copy_bits (contents + rel->r_offset, dest_begin, 3354 src_begin, 6); 3355 tilegx_replace_insn (contents + rel->r_offset, mask, insn); 3356 3357 continue; 3358 } 3359 else 3360 { 3361 const bfd_byte *mask = NULL; 3362 const bfd_byte *add_insn = NULL; 3363 bfd_boolean is_64bit = ABI_64_P (output_bfd); 3364 3365 switch (r_type) 3366 { 3367 case R_TILEGX_IMM8_X0_TLS_GD_ADD: 3368 add_insn = is_tls_iele 3369 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1) 3370 : insn_tls_gd_add_X0X1; 3371 mask = insn_mask_X0_no_dest_no_srca; 3372 break; 3373 case R_TILEGX_IMM8_X1_TLS_GD_ADD: 3374 add_insn = is_tls_iele 3375 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1) 3376 : insn_tls_gd_add_X0X1; 3377 mask = insn_mask_X1_no_dest_no_srca; 3378 break; 3379 case R_TILEGX_IMM8_Y0_TLS_GD_ADD: 3380 add_insn = is_tls_iele 3381 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1) 3382 : insn_tls_gd_add_Y0Y1; 3383 mask = insn_mask_Y0_no_dest_no_srca; 3384 break; 3385 case R_TILEGX_IMM8_Y1_TLS_GD_ADD: 3386 add_insn = is_tls_iele 3387 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1) 3388 : insn_tls_gd_add_Y0Y1; 3389 mask = insn_mask_Y1_no_dest_no_srca; 3390 break; 3391 } 3392 3393 tilegx_replace_insn (contents + rel->r_offset, mask, add_insn); 3394 3395 continue; 3396 } 3397 break; 3398 case R_TILEGX_TLS_IE_LOAD: 3399 if (!input_section->sec_flg0 3400 && !bfd_link_pic (info) 3401 && (h == NULL || h->dynindx == -1)) 3402 { 3403 /* IE -> LE */ 3404 tilegx_replace_insn (contents + rel->r_offset, 3405 insn_mask_X1_no_dest_no_srca, 3406 insn_move_X0X1); 3407 } 3408 else 3409 { 3410 /* IE -> IE */ 3411 if (ABI_64_P (output_bfd)) 3412 tilegx_replace_insn (contents + rel->r_offset, 3413 insn_mask_X1_no_dest_no_srca, 3414 insn_tls_ie_ld_X1); 3415 else 3416 tilegx_replace_insn (contents + rel->r_offset, 3417 insn_mask_X1_no_dest_no_srca, 3418 insn_tls_ie_ld4s_X1); 3419 } 3420 continue; 3421 break; 3422 default: 3423 break; 3424 } 3425 3426 switch (r_type) 3427 { 3428 case R_TILEGX_IMM16_X0_HW0_GOT: 3429 case R_TILEGX_IMM16_X1_HW0_GOT: 3430 case R_TILEGX_IMM16_X0_HW0_LAST_GOT: 3431 case R_TILEGX_IMM16_X1_HW0_LAST_GOT: 3432 case R_TILEGX_IMM16_X0_HW1_LAST_GOT: 3433 case R_TILEGX_IMM16_X1_HW1_LAST_GOT: 3434 /* Relocation is to the entry for this symbol in the global 3435 offset table. */ 3436 if (htab->elf.sgot == NULL) 3437 abort (); 3438 3439 if (h != NULL) 3440 { 3441 bfd_boolean dyn; 3442 3443 off = h->got.offset; 3444 BFD_ASSERT (off != (bfd_vma) -1); 3445 dyn = elf_hash_table (info)->dynamic_sections_created; 3446 3447 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 3448 bfd_link_pic (info), 3449 h) 3450 || (bfd_link_pic (info) 3451 && SYMBOL_REFERENCES_LOCAL (info, h))) 3452 { 3453 /* This is actually a static link, or it is a 3454 -Bsymbolic link and the symbol is defined 3455 locally, or the symbol was forced to be local 3456 because of a version file. We must initialize 3457 this entry in the global offset table. Since the 3458 offset must always be a multiple 3459 of 8 for 64-bit, we use the least significant bit 3460 to record whether we have initialized it already. 3461 3462 When doing a dynamic link, we create a .rela.got 3463 relocation entry to initialize the value. This 3464 is done in the finish_dynamic_symbol routine. */ 3465 if ((off & 1) != 0) 3466 off &= ~1; 3467 else 3468 { 3469 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation, 3470 htab->elf.sgot->contents + off); 3471 h->got.offset |= 1; 3472 } 3473 } 3474 else 3475 unresolved_reloc = FALSE; 3476 } 3477 else 3478 { 3479 BFD_ASSERT (local_got_offsets != NULL 3480 && local_got_offsets[r_symndx] != (bfd_vma) -1); 3481 3482 off = local_got_offsets[r_symndx]; 3483 3484 /* The offset must always be a multiple of 8 on 64-bit. 3485 We use the least significant bit to record 3486 whether we have already processed this entry. */ 3487 if ((off & 1) != 0) 3488 off &= ~1; 3489 else 3490 { 3491 if (bfd_link_pic (info)) 3492 { 3493 asection *s; 3494 Elf_Internal_Rela outrel; 3495 3496 /* We need to generate a R_TILEGX_RELATIVE reloc 3497 for the dynamic linker. */ 3498 s = htab->elf.srelgot; 3499 BFD_ASSERT (s != NULL); 3500 3501 outrel.r_offset = (htab->elf.sgot->output_section->vma 3502 + htab->elf.sgot->output_offset 3503 + off); 3504 outrel.r_info = 3505 TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE); 3506 outrel.r_addend = relocation; 3507 relocation = 0; 3508 tilegx_elf_append_rela (output_bfd, s, &outrel); 3509 } 3510 3511 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation, 3512 htab->elf.sgot->contents + off); 3513 local_got_offsets[r_symndx] |= 1; 3514 } 3515 } 3516 relocation = off - got_base; 3517 break; 3518 3519 case R_TILEGX_JUMPOFF_X1_PLT: 3520 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL: 3521 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL: 3522 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL: 3523 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL: 3524 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL: 3525 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL: 3526 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL: 3527 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL: 3528 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL: 3529 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL: 3530 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL: 3531 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL: 3532 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL: 3533 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL: 3534 /* Relocation is to the entry for this symbol in the 3535 procedure linkage table. */ 3536 BFD_ASSERT (h != NULL); 3537 3538 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL) 3539 { 3540 /* We didn't make a PLT entry for this symbol. This 3541 happens when statically linking PIC code, or when 3542 using -Bsymbolic. */ 3543 break; 3544 } 3545 3546 relocation = (htab->elf.splt->output_section->vma 3547 + htab->elf.splt->output_offset 3548 + h->plt.offset); 3549 unresolved_reloc = FALSE; 3550 break; 3551 3552 case R_TILEGX_64_PCREL: 3553 case R_TILEGX_32_PCREL: 3554 case R_TILEGX_16_PCREL: 3555 case R_TILEGX_8_PCREL: 3556 case R_TILEGX_IMM16_X0_HW0_PCREL: 3557 case R_TILEGX_IMM16_X1_HW0_PCREL: 3558 case R_TILEGX_IMM16_X0_HW1_PCREL: 3559 case R_TILEGX_IMM16_X1_HW1_PCREL: 3560 case R_TILEGX_IMM16_X0_HW2_PCREL: 3561 case R_TILEGX_IMM16_X1_HW2_PCREL: 3562 case R_TILEGX_IMM16_X0_HW3_PCREL: 3563 case R_TILEGX_IMM16_X1_HW3_PCREL: 3564 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL: 3565 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL: 3566 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL: 3567 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL: 3568 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL: 3569 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL: 3570 if (h != NULL 3571 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 3572 break; 3573 /* Fall through. */ 3574 case R_TILEGX_64: 3575 case R_TILEGX_32: 3576 case R_TILEGX_16: 3577 case R_TILEGX_8: 3578 case R_TILEGX_HW0: 3579 case R_TILEGX_HW1: 3580 case R_TILEGX_HW2: 3581 case R_TILEGX_HW3: 3582 case R_TILEGX_HW0_LAST: 3583 case R_TILEGX_HW1_LAST: 3584 case R_TILEGX_HW2_LAST: 3585 case R_TILEGX_COPY: 3586 case R_TILEGX_GLOB_DAT: 3587 case R_TILEGX_JMP_SLOT: 3588 case R_TILEGX_RELATIVE: 3589 case R_TILEGX_BROFF_X1: 3590 case R_TILEGX_JUMPOFF_X1: 3591 case R_TILEGX_IMM8_X0: 3592 case R_TILEGX_IMM8_Y0: 3593 case R_TILEGX_IMM8_X1: 3594 case R_TILEGX_IMM8_Y1: 3595 case R_TILEGX_DEST_IMM8_X1: 3596 case R_TILEGX_MT_IMM14_X1: 3597 case R_TILEGX_MF_IMM14_X1: 3598 case R_TILEGX_MMSTART_X0: 3599 case R_TILEGX_MMEND_X0: 3600 case R_TILEGX_SHAMT_X0: 3601 case R_TILEGX_SHAMT_X1: 3602 case R_TILEGX_SHAMT_Y0: 3603 case R_TILEGX_SHAMT_Y1: 3604 case R_TILEGX_IMM16_X0_HW0: 3605 case R_TILEGX_IMM16_X1_HW0: 3606 case R_TILEGX_IMM16_X0_HW1: 3607 case R_TILEGX_IMM16_X1_HW1: 3608 case R_TILEGX_IMM16_X0_HW2: 3609 case R_TILEGX_IMM16_X1_HW2: 3610 case R_TILEGX_IMM16_X0_HW3: 3611 case R_TILEGX_IMM16_X1_HW3: 3612 case R_TILEGX_IMM16_X0_HW0_LAST: 3613 case R_TILEGX_IMM16_X1_HW0_LAST: 3614 case R_TILEGX_IMM16_X0_HW1_LAST: 3615 case R_TILEGX_IMM16_X1_HW1_LAST: 3616 case R_TILEGX_IMM16_X0_HW2_LAST: 3617 case R_TILEGX_IMM16_X1_HW2_LAST: 3618 if ((input_section->flags & SEC_ALLOC) == 0) 3619 break; 3620 3621 if ((bfd_link_pic (info) 3622 && (h == NULL 3623 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 3624 || h->root.type != bfd_link_hash_undefweak) 3625 && (! howto->pc_relative 3626 || !SYMBOL_CALLS_LOCAL (info, h))) 3627 || (!bfd_link_pic (info) 3628 && h != NULL 3629 && h->dynindx != -1 3630 && !h->non_got_ref 3631 && ((h->def_dynamic 3632 && !h->def_regular) 3633 || h->root.type == bfd_link_hash_undefweak 3634 || h->root.type == bfd_link_hash_undefined))) 3635 { 3636 Elf_Internal_Rela outrel; 3637 bfd_boolean skip, relocate = FALSE; 3638 3639 /* When generating a shared object, these relocations 3640 are copied into the output file to be resolved at run 3641 time. */ 3642 3643 BFD_ASSERT (sreloc != NULL); 3644 3645 skip = FALSE; 3646 3647 outrel.r_offset = 3648 _bfd_elf_section_offset (output_bfd, info, input_section, 3649 rel->r_offset); 3650 if (outrel.r_offset == (bfd_vma) -1) 3651 skip = TRUE; 3652 else if (outrel.r_offset == (bfd_vma) -2) 3653 skip = TRUE, relocate = TRUE; 3654 outrel.r_offset += (input_section->output_section->vma 3655 + input_section->output_offset); 3656 3657 switch (r_type) 3658 { 3659 case R_TILEGX_64_PCREL: 3660 case R_TILEGX_32_PCREL: 3661 case R_TILEGX_16_PCREL: 3662 case R_TILEGX_8_PCREL: 3663 /* If the symbol is not dynamic, we should not keep 3664 a dynamic relocation. But an .rela.* slot has been 3665 allocated for it, output R_TILEGX_NONE. 3666 FIXME: Add code tracking needed dynamic relocs as 3667 e.g. i386 has. */ 3668 if (h->dynindx == -1) 3669 skip = TRUE, relocate = TRUE; 3670 break; 3671 } 3672 3673 if (skip) 3674 memset (&outrel, 0, sizeof outrel); 3675 /* h->dynindx may be -1 if the symbol was marked to 3676 become local. */ 3677 else if (h != NULL && 3678 h->dynindx != -1 3679 && (! is_plt 3680 || !bfd_link_pic (info) 3681 || !SYMBOLIC_BIND (info, h) 3682 || !h->def_regular)) 3683 { 3684 BFD_ASSERT (h->dynindx != -1); 3685 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, h->dynindx, r_type); 3686 outrel.r_addend = rel->r_addend; 3687 } 3688 else 3689 { 3690 if (r_type == R_TILEGX_32 || r_type == R_TILEGX_64) 3691 { 3692 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, 3693 R_TILEGX_RELATIVE); 3694 outrel.r_addend = relocation + rel->r_addend; 3695 } 3696 else 3697 { 3698 long indx; 3699 3700 outrel.r_addend = relocation + rel->r_addend; 3701 3702 if (is_plt) 3703 sec = htab->elf.splt; 3704 3705 if (bfd_is_abs_section (sec)) 3706 indx = 0; 3707 else if (sec == NULL || sec->owner == NULL) 3708 { 3709 bfd_set_error (bfd_error_bad_value); 3710 return FALSE; 3711 } 3712 else 3713 { 3714 asection *osec; 3715 3716 /* We are turning this relocation into one 3717 against a section symbol. It would be 3718 proper to subtract the symbol's value, 3719 osec->vma, from the emitted reloc addend, 3720 but ld.so expects buggy relocs. */ 3721 osec = sec->output_section; 3722 indx = elf_section_data (osec)->dynindx; 3723 3724 if (indx == 0) 3725 { 3726 osec = htab->elf.text_index_section; 3727 indx = elf_section_data (osec)->dynindx; 3728 } 3729 3730 /* FIXME: we really should be able to link non-pic 3731 shared libraries. */ 3732 if (indx == 0) 3733 { 3734 BFD_FAIL (); 3735 (*_bfd_error_handler) 3736 (_("%B: probably compiled without -fPIC?"), 3737 input_bfd); 3738 bfd_set_error (bfd_error_bad_value); 3739 return FALSE; 3740 } 3741 } 3742 3743 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, indx, 3744 r_type); 3745 } 3746 } 3747 3748 tilegx_elf_append_rela (output_bfd, sreloc, &outrel); 3749 3750 /* This reloc will be computed at runtime, so there's no 3751 need to do anything now. */ 3752 if (! relocate) 3753 continue; 3754 } 3755 break; 3756 3757 case R_TILEGX_IMM16_X0_HW0_TLS_LE: 3758 case R_TILEGX_IMM16_X1_HW0_TLS_LE: 3759 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE: 3760 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE: 3761 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE: 3762 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE: 3763 if (bfd_link_pic (info)) 3764 { 3765 Elf_Internal_Rela outrel; 3766 bfd_boolean skip; 3767 3768 BFD_ASSERT (sreloc != NULL); 3769 skip = FALSE; 3770 outrel.r_offset = 3771 _bfd_elf_section_offset (output_bfd, info, input_section, 3772 rel->r_offset); 3773 if (outrel.r_offset == (bfd_vma) -1) 3774 skip = TRUE; 3775 else if (outrel.r_offset == (bfd_vma) -2) 3776 skip = TRUE; 3777 outrel.r_offset += (input_section->output_section->vma 3778 + input_section->output_offset); 3779 if (skip) 3780 memset (&outrel, 0, sizeof outrel); 3781 else 3782 { 3783 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, r_type); 3784 outrel.r_addend = relocation - dtpoff_base (info) 3785 + rel->r_addend; 3786 } 3787 3788 tilegx_elf_append_rela (output_bfd, sreloc, &outrel); 3789 continue; 3790 } 3791 relocation = tpoff (info, relocation); 3792 break; 3793 3794 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 3795 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 3796 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 3797 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 3798 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 3799 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 3800 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 3801 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 3802 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 3803 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 3804 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 3805 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 3806 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL, 3807 input_section->sec_flg0); 3808 tls_type = GOT_UNKNOWN; 3809 if (h == NULL && local_got_offsets) 3810 tls_type = 3811 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx]; 3812 else if (h != NULL) 3813 { 3814 tls_type = tilegx_elf_hash_entry(h)->tls_type; 3815 if (!bfd_link_pic (info) 3816 && h->dynindx == -1 3817 && tls_type == GOT_TLS_IE) 3818 r_type = (!input_section->sec_flg0 3819 ? tilegx_tls_translate_to_le (r_type) 3820 : tilegx_tls_translate_to_ie (r_type)); 3821 } 3822 3823 if (tls_type == GOT_TLS_IE) 3824 r_type = tilegx_tls_translate_to_ie (r_type); 3825 3826 if (r_type == R_TILEGX_IMM16_X0_HW0_TLS_LE 3827 || r_type == R_TILEGX_IMM16_X1_HW0_TLS_LE 3828 || r_type == R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE 3829 || r_type == R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE 3830 || r_type == R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE 3831 || r_type == R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE) 3832 { 3833 relocation = tpoff (info, relocation); 3834 break; 3835 } 3836 3837 if (h != NULL) 3838 { 3839 off = h->got.offset; 3840 h->got.offset |= 1; 3841 } 3842 else 3843 { 3844 BFD_ASSERT (local_got_offsets != NULL); 3845 off = local_got_offsets[r_symndx]; 3846 local_got_offsets[r_symndx] |= 1; 3847 } 3848 3849 if (htab->elf.sgot == NULL) 3850 abort (); 3851 3852 if ((off & 1) != 0) 3853 off &= ~1; 3854 else 3855 { 3856 Elf_Internal_Rela outrel; 3857 int indx = 0; 3858 bfd_boolean need_relocs = FALSE; 3859 3860 if (htab->elf.srelgot == NULL) 3861 abort (); 3862 3863 if (h != NULL) 3864 { 3865 bfd_boolean dyn; 3866 dyn = htab->elf.dynamic_sections_created; 3867 3868 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 3869 bfd_link_pic (info), 3870 h) 3871 && (!bfd_link_pic (info) 3872 || !SYMBOL_REFERENCES_LOCAL (info, h))) 3873 { 3874 indx = h->dynindx; 3875 } 3876 } 3877 3878 /* The GOT entries have not been initialized yet. Do it 3879 now, and emit any relocations. */ 3880 if ((bfd_link_pic (info) || indx != 0) 3881 && (h == NULL 3882 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 3883 || h->root.type != bfd_link_hash_undefweak)) 3884 need_relocs = TRUE; 3885 3886 switch (r_type) 3887 { 3888 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 3889 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 3890 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 3891 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 3892 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 3893 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 3894 if (need_relocs) { 3895 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 3896 htab->elf.sgot->contents + off); 3897 outrel.r_offset = (htab->elf.sgot->output_section->vma 3898 + htab->elf.sgot->output_offset + off); 3899 outrel.r_addend = 0; 3900 if (indx == 0) 3901 outrel.r_addend = relocation - dtpoff_base (info); 3902 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx, 3903 TILEGX_ELF_TPOFF_RELOC (htab)); 3904 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); 3905 } else { 3906 TILEGX_ELF_PUT_WORD (htab, output_bfd, 3907 tpoff (info, relocation), 3908 htab->elf.sgot->contents + off); 3909 } 3910 break; 3911 3912 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 3913 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 3914 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 3915 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 3916 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 3917 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 3918 if (need_relocs) { 3919 outrel.r_offset = (htab->elf.sgot->output_section->vma 3920 + htab->elf.sgot->output_offset + off); 3921 outrel.r_addend = 0; 3922 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx, 3923 TILEGX_ELF_DTPMOD_RELOC (htab)); 3924 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 3925 htab->elf.sgot->contents + off); 3926 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); 3927 if (indx == 0) 3928 { 3929 BFD_ASSERT (! unresolved_reloc); 3930 TILEGX_ELF_PUT_WORD (htab, output_bfd, 3931 relocation - dtpoff_base (info), 3932 (htab->elf.sgot->contents + off + 3933 TILEGX_ELF_WORD_BYTES (htab))); 3934 } 3935 else 3936 { 3937 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 3938 (htab->elf.sgot->contents + off + 3939 TILEGX_ELF_WORD_BYTES (htab))); 3940 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx, 3941 TILEGX_ELF_DTPOFF_RELOC (htab)); 3942 outrel.r_offset += TILEGX_ELF_WORD_BYTES (htab); 3943 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); 3944 } 3945 } 3946 3947 else { 3948 /* If we are not emitting relocations for a 3949 general dynamic reference, then we must be in a 3950 static link or an executable link with the 3951 symbol binding locally. Mark it as belonging 3952 to module 1, the executable. */ 3953 TILEGX_ELF_PUT_WORD (htab, output_bfd, 1, 3954 htab->elf.sgot->contents + off ); 3955 TILEGX_ELF_PUT_WORD (htab, output_bfd, 3956 relocation - dtpoff_base (info), 3957 htab->elf.sgot->contents + off + 3958 TILEGX_ELF_WORD_BYTES (htab)); 3959 } 3960 break; 3961 } 3962 } 3963 3964 if (off >= (bfd_vma) -2) 3965 abort (); 3966 3967 relocation = off - got_base; 3968 unresolved_reloc = FALSE; 3969 howto = tilegx_elf_howto_table + r_type; 3970 break; 3971 3972 default: 3973 break; 3974 } 3975 3976 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections 3977 because such sections are not SEC_ALLOC and thus ld.so will 3978 not process them. */ 3979 if (unresolved_reloc 3980 && !((input_section->flags & SEC_DEBUGGING) != 0 3981 && h->def_dynamic) 3982 && _bfd_elf_section_offset (output_bfd, info, input_section, 3983 rel->r_offset) != (bfd_vma) -1) 3984 (*_bfd_error_handler) 3985 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), 3986 input_bfd, 3987 input_section, 3988 (long) rel->r_offset, 3989 howto->name, 3990 h->root.root.string); 3991 3992 r = bfd_reloc_continue; 3993 3994 /* Get the operand creation function, if any. */ 3995 create_func = reloc_to_create_func[r_type]; 3996 if (create_func == NULL) 3997 { 3998 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3999 contents, rel->r_offset, 4000 relocation, rel->r_addend); 4001 } 4002 else 4003 { 4004 if (howto->pc_relative) 4005 { 4006 relocation -= 4007 input_section->output_section->vma + input_section->output_offset; 4008 if (howto->pcrel_offset) 4009 relocation -= rel->r_offset; 4010 } 4011 4012 bfd_byte *data; 4013 4014 /* Add the relocation addend if any to the final target value */ 4015 relocation += rel->r_addend; 4016 4017 /* Do basic range checking */ 4018 r = bfd_check_overflow (howto->complain_on_overflow, 4019 howto->bitsize, 4020 howto->rightshift, 4021 TILEGX_ELF_WORD_BYTES (htab) * 8, 4022 relocation); 4023 4024 /* 4025 * Write the relocated value out into the raw section data. 4026 * Don't put a relocation out in the .rela section. 4027 */ 4028 tilegx_bundle_bits mask = create_func(-1); 4029 tilegx_bundle_bits value = create_func(relocation >> howto->rightshift); 4030 4031 /* Only touch bytes while the mask is not 0, so we 4032 don't write to out of bounds memory if this is actually 4033 a 16-bit switch instruction. */ 4034 for (data = contents + rel->r_offset; mask != 0; data++) 4035 { 4036 bfd_byte byte_mask = (bfd_byte)mask; 4037 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask); 4038 mask >>= 8; 4039 value >>= 8; 4040 } 4041 } 4042 4043 if (r != bfd_reloc_ok) 4044 { 4045 const char *msg = NULL; 4046 4047 switch (r) 4048 { 4049 case bfd_reloc_overflow: 4050 (*info->callbacks->reloc_overflow) 4051 (info, (h ? &h->root : NULL), name, howto->name, 4052 (bfd_vma) 0, input_bfd, input_section, rel->r_offset); 4053 break; 4054 4055 case bfd_reloc_undefined: 4056 (*info->callbacks->undefined_symbol) 4057 (info, name, input_bfd, input_section, rel->r_offset, TRUE); 4058 break; 4059 4060 case bfd_reloc_outofrange: 4061 msg = _("internal error: out of range error"); 4062 break; 4063 4064 case bfd_reloc_notsupported: 4065 msg = _("internal error: unsupported relocation error"); 4066 break; 4067 4068 case bfd_reloc_dangerous: 4069 msg = _("internal error: dangerous relocation"); 4070 break; 4071 4072 default: 4073 msg = _("internal error: unknown error"); 4074 break; 4075 } 4076 4077 if (msg) 4078 (*info->callbacks->warning) (info, msg, name, input_bfd, 4079 input_section, rel->r_offset); 4080 } 4081 } 4082 4083 return TRUE; 4084 } 4085 4086 /* Finish up dynamic symbol handling. We set the contents of various 4087 dynamic sections here. */ 4088 4089 bfd_boolean 4090 tilegx_elf_finish_dynamic_symbol (bfd *output_bfd, 4091 struct bfd_link_info *info, 4092 struct elf_link_hash_entry *h, 4093 Elf_Internal_Sym *sym) 4094 { 4095 struct tilegx_elf_link_hash_table *htab; 4096 4097 htab = tilegx_elf_hash_table (info); 4098 BFD_ASSERT (htab != NULL); 4099 4100 if (h->plt.offset != (bfd_vma) -1) 4101 { 4102 asection *splt; 4103 asection *srela; 4104 asection *sgotplt; 4105 Elf_Internal_Rela rela; 4106 bfd_byte *loc; 4107 bfd_vma r_offset; 4108 const struct elf_backend_data *bed = get_elf_backend_data (output_bfd); 4109 4110 4111 int rela_index; 4112 4113 /* This symbol has an entry in the PLT. Set it up. */ 4114 4115 BFD_ASSERT (h->dynindx != -1); 4116 4117 splt = htab->elf.splt; 4118 srela = htab->elf.srelplt; 4119 sgotplt = htab->elf.sgotplt; 4120 4121 if (splt == NULL || srela == NULL) 4122 abort (); 4123 4124 /* Fill in the entry in the procedure linkage table. */ 4125 rela_index = tilegx_plt_entry_build (output_bfd, htab, splt, sgotplt, 4126 h->plt.offset, &r_offset); 4127 4128 /* Fill in the entry in the global offset table, which initially points 4129 to the beginning of the plt. */ 4130 TILEGX_ELF_PUT_WORD (htab, output_bfd, 4131 splt->output_section->vma + splt->output_offset, 4132 sgotplt->contents + r_offset); 4133 4134 /* Fill in the entry in the .rela.plt section. */ 4135 rela.r_offset = (sgotplt->output_section->vma 4136 + sgotplt->output_offset 4137 + r_offset); 4138 rela.r_addend = 0; 4139 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_JMP_SLOT); 4140 4141 loc = srela->contents + rela_index * TILEGX_ELF_RELA_BYTES (htab); 4142 bed->s->swap_reloca_out (output_bfd, &rela, loc); 4143 4144 if (!h->def_regular) 4145 { 4146 /* Mark the symbol as undefined, rather than as defined in 4147 the .plt section. Leave the value alone. */ 4148 sym->st_shndx = SHN_UNDEF; 4149 /* If the symbol is weak, we do need to clear the value. 4150 Otherwise, the PLT entry would provide a definition for 4151 the symbol even if the symbol wasn't defined anywhere, 4152 and so the symbol would never be NULL. */ 4153 if (!h->ref_regular_nonweak) 4154 sym->st_value = 0; 4155 } 4156 } 4157 4158 if (h->got.offset != (bfd_vma) -1 4159 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_GD 4160 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_IE) 4161 { 4162 asection *sgot; 4163 asection *srela; 4164 Elf_Internal_Rela rela; 4165 4166 /* This symbol has an entry in the GOT. Set it up. */ 4167 4168 sgot = htab->elf.sgot; 4169 srela = htab->elf.srelgot; 4170 BFD_ASSERT (sgot != NULL && srela != NULL); 4171 4172 rela.r_offset = (sgot->output_section->vma 4173 + sgot->output_offset 4174 + (h->got.offset &~ (bfd_vma) 1)); 4175 4176 /* If this is a -Bsymbolic link, and the symbol is defined 4177 locally, we just want to emit a RELATIVE reloc. Likewise if 4178 the symbol was forced to be local because of a version file. 4179 The entry in the global offset table will already have been 4180 initialized in the relocate_section function. */ 4181 if (bfd_link_pic (info) 4182 && (info->symbolic || h->dynindx == -1) 4183 && h->def_regular) 4184 { 4185 asection *sec = h->root.u.def.section; 4186 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE); 4187 rela.r_addend = (h->root.u.def.value 4188 + sec->output_section->vma 4189 + sec->output_offset); 4190 } 4191 else 4192 { 4193 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_GLOB_DAT); 4194 rela.r_addend = 0; 4195 } 4196 4197 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 4198 sgot->contents + (h->got.offset & ~(bfd_vma) 1)); 4199 tilegx_elf_append_rela (output_bfd, srela, &rela); 4200 } 4201 4202 if (h->needs_copy) 4203 { 4204 asection *s; 4205 Elf_Internal_Rela rela; 4206 4207 /* This symbols needs a copy reloc. Set it up. */ 4208 BFD_ASSERT (h->dynindx != -1); 4209 4210 s = htab->srelbss; 4211 BFD_ASSERT (s != NULL); 4212 4213 rela.r_offset = (h->root.u.def.value 4214 + h->root.u.def.section->output_section->vma 4215 + h->root.u.def.section->output_offset); 4216 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_COPY); 4217 rela.r_addend = 0; 4218 tilegx_elf_append_rela (output_bfd, s, &rela); 4219 } 4220 4221 /* Mark some specially defined symbols as absolute. */ 4222 if (h == htab->elf.hdynamic 4223 || (h == htab->elf.hgot || h == htab->elf.hplt)) 4224 sym->st_shndx = SHN_ABS; 4225 4226 return TRUE; 4227 } 4228 4229 /* Finish up the dynamic sections. */ 4230 4231 static bfd_boolean 4232 tilegx_finish_dyn (bfd *output_bfd, struct bfd_link_info *info, 4233 bfd *dynobj, asection *sdyn, 4234 asection *splt ATTRIBUTE_UNUSED) 4235 { 4236 struct tilegx_elf_link_hash_table *htab; 4237 const struct elf_backend_data *bed; 4238 bfd_byte *dyncon, *dynconend; 4239 size_t dynsize; 4240 4241 htab = tilegx_elf_hash_table (info); 4242 BFD_ASSERT (htab != NULL); 4243 bed = get_elf_backend_data (output_bfd); 4244 dynsize = bed->s->sizeof_dyn; 4245 dynconend = sdyn->contents + sdyn->size; 4246 4247 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize) 4248 { 4249 Elf_Internal_Dyn dyn; 4250 asection *s; 4251 4252 bed->s->swap_dyn_in (dynobj, dyncon, &dyn); 4253 4254 switch (dyn.d_tag) 4255 { 4256 case DT_PLTGOT: 4257 s = htab->elf.sgotplt; 4258 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 4259 break; 4260 case DT_JMPREL: 4261 s = htab->elf.srelplt; 4262 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 4263 break; 4264 case DT_PLTRELSZ: 4265 s = htab->elf.srelplt; 4266 dyn.d_un.d_val = s->size; 4267 break; 4268 default: 4269 continue; 4270 } 4271 4272 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon); 4273 } 4274 return TRUE; 4275 } 4276 4277 bfd_boolean 4278 tilegx_elf_finish_dynamic_sections (bfd *output_bfd, 4279 struct bfd_link_info *info) 4280 { 4281 bfd *dynobj; 4282 asection *sdyn; 4283 struct tilegx_elf_link_hash_table *htab; 4284 size_t pad_size; 4285 4286 htab = tilegx_elf_hash_table (info); 4287 BFD_ASSERT (htab != NULL); 4288 dynobj = htab->elf.dynobj; 4289 4290 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 4291 4292 if (elf_hash_table (info)->dynamic_sections_created) 4293 { 4294 asection *splt; 4295 bfd_boolean ret; 4296 4297 splt = htab->elf.splt; 4298 BFD_ASSERT (splt != NULL && sdyn != NULL); 4299 4300 ret = tilegx_finish_dyn (output_bfd, info, dynobj, sdyn, splt); 4301 4302 if (ret != TRUE) 4303 return ret; 4304 4305 /* Fill in the head and tail entries in the procedure linkage table. */ 4306 if (splt->size > 0) 4307 { 4308 memcpy (splt->contents, 4309 ABI_64_P (output_bfd) ? 4310 tilegx64_plt0_entry : tilegx32_plt0_entry, 4311 PLT_HEADER_SIZE); 4312 4313 memcpy (splt->contents + splt->size 4314 - PLT_ENTRY_SIZE + PLT_HEADER_SIZE, 4315 ABI_64_P (output_bfd) ? 4316 tilegx64_plt_tail_entry : tilegx32_plt_tail_entry, 4317 PLT_TAIL_SIZE); 4318 /* Add padding so that the plt section is a multiple of its 4319 entry size. */ 4320 pad_size = PLT_ENTRY_SIZE - PLT_HEADER_SIZE - PLT_TAIL_SIZE; 4321 memset (splt->contents + splt->size - pad_size, 0, pad_size); 4322 } 4323 4324 elf_section_data (splt->output_section)->this_hdr.sh_entsize 4325 = PLT_ENTRY_SIZE; 4326 } 4327 4328 if (htab->elf.sgotplt) 4329 { 4330 if (bfd_is_abs_section (htab->elf.sgotplt->output_section)) 4331 { 4332 (*_bfd_error_handler) 4333 (_("discarded output section: `%A'"), htab->elf.sgotplt); 4334 return FALSE; 4335 } 4336 4337 if (htab->elf.sgotplt->size > 0) 4338 { 4339 /* Write the first two entries in .got.plt, needed for the dynamic 4340 linker. */ 4341 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) -1, 4342 htab->elf.sgotplt->contents); 4343 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) 0, 4344 htab->elf.sgotplt->contents 4345 + GOT_ENTRY_SIZE (htab)); 4346 } 4347 4348 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4349 GOT_ENTRY_SIZE (htab); 4350 } 4351 4352 if (htab->elf.sgot) 4353 { 4354 if (htab->elf.sgot->size > 0) 4355 { 4356 /* Set the first entry in the global offset table to the address of 4357 the dynamic section. */ 4358 bfd_vma val = (sdyn ? 4359 sdyn->output_section->vma + sdyn->output_offset : 4360 0); 4361 TILEGX_ELF_PUT_WORD (htab, output_bfd, val, 4362 htab->elf.sgot->contents); 4363 } 4364 4365 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4366 GOT_ENTRY_SIZE (htab); 4367 } 4368 4369 return TRUE; 4370 } 4371 4372 4373 4375 /* Return address for Ith PLT stub in section PLT, for relocation REL 4376 or (bfd_vma) -1 if it should not be included. */ 4377 4378 bfd_vma 4379 tilegx_elf_plt_sym_val (bfd_vma i, const asection *plt, 4380 const arelent *rel ATTRIBUTE_UNUSED) 4381 { 4382 return plt->vma + PLT_HEADER_SIZE + i * PLT_ENTRY_SIZE; 4383 } 4384 4385 enum elf_reloc_type_class 4386 tilegx_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, 4387 const asection *rel_sec ATTRIBUTE_UNUSED, 4388 const Elf_Internal_Rela *rela) 4389 { 4390 switch ((int) TILEGX_ELF_R_TYPE (rela->r_info)) 4391 { 4392 case R_TILEGX_RELATIVE: 4393 return reloc_class_relative; 4394 case R_TILEGX_JMP_SLOT: 4395 return reloc_class_plt; 4396 case R_TILEGX_COPY: 4397 return reloc_class_copy; 4398 default: 4399 return reloc_class_normal; 4400 } 4401 } 4402 4403 int 4404 tilegx_additional_program_headers (bfd *abfd, 4405 struct bfd_link_info *info ATTRIBUTE_UNUSED) 4406 { 4407 /* Each .intrpt section specified by the user adds another PT_LOAD 4408 header since the sections are discontiguous. */ 4409 static const char intrpt_sections[4][9] = 4410 { 4411 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3" 4412 }; 4413 int count = 0; 4414 int i; 4415 4416 for (i = 0; i < 4; i++) 4417 { 4418 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]); 4419 if (sec != NULL && (sec->flags & SEC_LOAD) != 0) 4420 ++count; 4421 } 4422 4423 /* Add four "padding" headers in to leave room in case a custom linker 4424 script does something fancy. Otherwise ld complains that it ran 4425 out of program headers and refuses to link. */ 4426 count += 4; 4427 4428 return count; 4429 } 4430 4431 4432 bfd_boolean 4433 _bfd_tilegx_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) 4434 { 4435 const char *targ1 = bfd_get_target (ibfd); 4436 const char *targ2 = bfd_get_target (obfd); 4437 4438 if (strcmp (targ1, targ2) != 0) 4439 { 4440 (*_bfd_error_handler) 4441 (_("%B: Cannot link together %s and %s objects."), 4442 ibfd, targ1, targ2); 4443 bfd_set_error (bfd_error_bad_value); 4444 return FALSE; 4445 } 4446 4447 return TRUE; 4448 } 4449
