elfxx-tilegx.c revision 1.1.1.5
1 /* TILE-Gx-specific support for ELF. 2 Copyright (C) 2011-2018 Free Software Foundation, Inc. 3 4 This file is part of BFD, the Binary File Descriptor library. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 19 MA 02110-1301, USA. */ 20 21 #include "sysdep.h" 22 #include "bfd.h" 23 #include "libbfd.h" 24 #include "elf-bfd.h" 25 #include "elf/tilegx.h" 26 #include "opcode/tilegx.h" 27 #include "libiberty.h" 28 #include "elfxx-tilegx.h" 29 30 #define ABI_64_P(abfd) \ 31 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64) 32 33 #define TILEGX_ELF_WORD_BYTES(htab) \ 34 ((htab)->bytes_per_word) 35 36 /* The size of an external RELA relocation. */ 37 #define TILEGX_ELF_RELA_BYTES(htab) \ 38 ((htab)->bytes_per_rela) 39 40 /* Both 32-bit and 64-bit tilegx encode this in an identical manner, 41 so just take advantage of that. */ 42 #define TILEGX_ELF_R_TYPE(r_info) \ 43 ((r_info) & 0xFF) 44 45 #define TILEGX_ELF_R_INFO(htab, in_rel, index, type) \ 46 ((htab)->r_info (in_rel, index, type)) 47 48 #define TILEGX_ELF_R_SYMNDX(htab, r_info) \ 49 ((htab)->r_symndx(r_info)) 50 51 #define TILEGX_ELF_DTPOFF_RELOC(htab) \ 52 ((htab)->dtpoff_reloc) 53 54 #define TILEGX_ELF_DTPMOD_RELOC(htab) \ 55 ((htab)->dtpmod_reloc) 56 57 #define TILEGX_ELF_TPOFF_RELOC(htab) \ 58 ((htab)->tpoff_reloc) 59 60 #define TILEGX_ELF_PUT_WORD(htab, bfd, val, ptr) \ 61 ((htab)->put_word (bfd, val, ptr)) 62 63 /* The name of the dynamic interpreter. This is put in the .interp 64 section. */ 65 66 #define ELF64_DYNAMIC_INTERPRETER "/lib/ld.so.1" 67 #define ELF32_DYNAMIC_INTERPRETER "/lib32/ld.so.1" 68 69 70 static reloc_howto_type tilegx_elf_howto_table [] = 71 { 72 /* This reloc does nothing. */ 73 HOWTO (R_TILEGX_NONE, /* type */ 74 0, /* rightshift */ 75 3, /* size (0 = byte, 1 = short, 2 = long) */ 76 0, /* bitsize */ 77 FALSE, /* pc_relative */ 78 0, /* bitpos */ 79 complain_overflow_dont, /* complain_on_overflow */ 80 bfd_elf_generic_reloc, /* special_function */ 81 "R_TILEGX_NONE", /* name */ 82 FALSE, /* partial_inplace */ 83 0, /* src_mask */ 84 0, /* dst_mask */ 85 FALSE), /* pcrel_offset */ 86 #ifdef BFD64 87 /* A 64 bit absolute relocation. */ 88 HOWTO (R_TILEGX_64, /* type */ 89 0, /* rightshift */ 90 4, /* size (0 = byte, 1 = short, 2 = long) */ 91 64, /* bitsize */ 92 FALSE, /* pc_relative */ 93 0, /* bitpos */ 94 complain_overflow_dont, /* complain_on_overflow */ 95 bfd_elf_generic_reloc, /* special_function */ 96 "R_TILEGX_64", /* name */ 97 FALSE, /* partial_inplace */ 98 0, /* src_mask */ 99 0xffffffffffffffffULL, /* dst_mask */ 100 FALSE), /* pcrel_offset */ 101 #endif 102 /* A 32 bit absolute relocation. */ 103 HOWTO (R_TILEGX_32, /* type */ 104 0, /* rightshift */ 105 2, /* size (0 = byte, 1 = short, 2 = long) */ 106 32, /* bitsize */ 107 FALSE, /* pc_relative */ 108 0, /* bitpos */ 109 complain_overflow_dont, /* complain_on_overflow */ 110 bfd_elf_generic_reloc, /* special_function */ 111 "R_TILEGX_32", /* name */ 112 FALSE, /* partial_inplace */ 113 0, /* src_mask */ 114 0xffffffff, /* dst_mask */ 115 FALSE), /* pcrel_offset */ 116 117 /* A 16 bit absolute relocation. */ 118 HOWTO (R_TILEGX_16, /* type */ 119 0, /* rightshift */ 120 1, /* size (0 = byte, 1 = short, 2 = long) */ 121 16, /* bitsize */ 122 FALSE, /* pc_relative */ 123 0, /* bitpos */ 124 complain_overflow_bitfield, /* complain_on_overflow */ 125 bfd_elf_generic_reloc, /* special_function */ 126 "R_TILEGX_16", /* name */ 127 FALSE, /* partial_inplace */ 128 0, /* src_mask */ 129 0xffff, /* dst_mask */ 130 FALSE), /* pcrel_offset */ 131 132 /* An 8 bit absolute relocation. */ 133 HOWTO (R_TILEGX_8, /* type */ 134 0, /* rightshift */ 135 0, /* size (0 = byte, 1 = short, 2 = long) */ 136 8, /* bitsize */ 137 FALSE, /* pc_relative */ 138 0, /* bitpos */ 139 complain_overflow_unsigned, /* complain_on_overflow */ 140 bfd_elf_generic_reloc, /* special_function */ 141 "R_TILEGX_8", /* name */ 142 FALSE, /* partial_inplace */ 143 0, /* src_mask */ 144 0xff, /* dst_mask */ 145 FALSE), /* pcrel_offset */ 146 #ifdef BFD64 147 /* A 64 bit pc-relative relocation. */ 148 HOWTO (R_TILEGX_64_PCREL,/* type */ 149 0, /* rightshift */ 150 4, /* size (0 = byte, 1 = short, 2 = long) */ 151 64, /* bitsize */ 152 TRUE, /* pc_relative */ 153 0, /* bitpos */ 154 complain_overflow_dont, /* complain_on_overflow */ 155 bfd_elf_generic_reloc, /* special_function */ 156 "R_TILEGX_32_PCREL", /* name */ 157 FALSE, /* partial_inplace */ 158 0, /* src_mask */ 159 0xffffffffffffffffULL, /* dst_mask */ 160 TRUE), /* pcrel_offset */ 161 #endif 162 /* A 32 bit pc-relative relocation. */ 163 HOWTO (R_TILEGX_32_PCREL,/* type */ 164 0, /* rightshift */ 165 2, /* size (0 = byte, 1 = short, 2 = long) */ 166 32, /* bitsize */ 167 TRUE, /* pc_relative */ 168 0, /* bitpos */ 169 complain_overflow_dont, /* complain_on_overflow */ 170 bfd_elf_generic_reloc, /* special_function */ 171 "R_TILEGX_32_PCREL", /* name */ 172 FALSE, /* partial_inplace */ 173 0, /* src_mask */ 174 0xffffffff, /* dst_mask */ 175 TRUE), /* pcrel_offset */ 176 177 /* A 16 bit pc-relative relocation. */ 178 HOWTO (R_TILEGX_16_PCREL,/* type */ 179 0, /* rightshift */ 180 1, /* size (0 = byte, 1 = short, 2 = long) */ 181 16, /* bitsize */ 182 TRUE, /* pc_relative */ 183 0, /* bitpos */ 184 complain_overflow_signed, /* complain_on_overflow */ 185 bfd_elf_generic_reloc, /* special_function */ 186 "R_TILEGX_16_PCREL", /* name */ 187 FALSE, /* partial_inplace */ 188 0, /* src_mask */ 189 0xffff, /* dst_mask */ 190 TRUE), /* pcrel_offset */ 191 192 /* An 8 bit pc-relative relocation. */ 193 HOWTO (R_TILEGX_8_PCREL, /* type */ 194 0, /* rightshift */ 195 0, /* size (0 = byte, 1 = short, 2 = long) */ 196 8, /* bitsize */ 197 TRUE, /* pc_relative */ 198 0, /* bitpos */ 199 complain_overflow_signed, /* complain_on_overflow */ 200 bfd_elf_generic_reloc, /* special_function */ 201 "R_TILEGX_8_PCREL",/* name */ 202 FALSE, /* partial_inplace */ 203 0, /* src_mask */ 204 0xff, /* dst_mask */ 205 TRUE), /* pcrel_offset */ 206 207 /* A 16 bit relocation without overflow. */ 208 HOWTO (R_TILEGX_HW0, /* type */ 209 0, /* rightshift */ 210 1, /* size (0 = byte, 1 = short, 2 = long) */ 211 16, /* bitsize */ 212 FALSE, /* pc_relative */ 213 0, /* bitpos */ 214 complain_overflow_dont,/* complain_on_overflow */ 215 bfd_elf_generic_reloc, /* special_function */ 216 "R_TILEGX_HW0", /* name */ 217 FALSE, /* partial_inplace */ 218 0, /* src_mask */ 219 0xffff, /* dst_mask */ 220 FALSE), /* pcrel_offset */ 221 222 /* A 16 bit relocation without overflow. */ 223 HOWTO (R_TILEGX_HW1, /* type */ 224 16, /* rightshift */ 225 1, /* size (0 = byte, 1 = short, 2 = long) */ 226 16, /* bitsize */ 227 FALSE, /* pc_relative */ 228 0, /* bitpos */ 229 complain_overflow_dont,/* complain_on_overflow */ 230 bfd_elf_generic_reloc, /* special_function */ 231 "R_TILEGX_HW1", /* name */ 232 FALSE, /* partial_inplace */ 233 0, /* src_mask */ 234 0xffff, /* dst_mask */ 235 FALSE), /* pcrel_offset */ 236 237 /* A 16 bit relocation without overflow. */ 238 HOWTO (R_TILEGX_HW2, /* type */ 239 32, /* rightshift */ 240 1, /* size (0 = byte, 1 = short, 2 = long) */ 241 16, /* bitsize */ 242 FALSE, /* pc_relative */ 243 0, /* bitpos */ 244 complain_overflow_dont,/* complain_on_overflow */ 245 bfd_elf_generic_reloc, /* special_function */ 246 "R_TILEGX_HW2", /* name */ 247 FALSE, /* partial_inplace */ 248 0, /* src_mask */ 249 0xffff, /* dst_mask */ 250 FALSE), /* pcrel_offset */ 251 252 /* A 16 bit relocation without overflow. */ 253 HOWTO (R_TILEGX_HW3, /* type */ 254 48, /* rightshift */ 255 1, /* size (0 = byte, 1 = short, 2 = long) */ 256 16, /* bitsize */ 257 FALSE, /* pc_relative */ 258 0, /* bitpos */ 259 complain_overflow_dont,/* complain_on_overflow */ 260 bfd_elf_generic_reloc, /* special_function */ 261 "R_TILEGX_HW3", /* name */ 262 FALSE, /* partial_inplace */ 263 0, /* src_mask */ 264 0xffff, /* dst_mask */ 265 FALSE), /* pcrel_offset */ 266 267 /* A 16 bit relocation with overflow. */ 268 HOWTO (R_TILEGX_HW0_LAST, /* type */ 269 0, /* rightshift */ 270 1, /* size (0 = byte, 1 = short, 2 = long) */ 271 16, /* bitsize */ 272 FALSE, /* pc_relative */ 273 0, /* bitpos */ 274 complain_overflow_signed,/* complain_on_overflow */ 275 bfd_elf_generic_reloc, /* special_function */ 276 "R_TILEGX_HW0_LAST", /* name */ 277 FALSE, /* partial_inplace */ 278 0, /* src_mask */ 279 0xffff, /* dst_mask */ 280 FALSE), /* pcrel_offset */ 281 282 /* A 16 bit relocation with overflow. */ 283 HOWTO (R_TILEGX_HW1_LAST, /* type */ 284 16, /* rightshift */ 285 1, /* size (0 = byte, 1 = short, 2 = long) */ 286 16, /* bitsize */ 287 FALSE, /* pc_relative */ 288 0, /* bitpos */ 289 complain_overflow_signed,/* complain_on_overflow */ 290 bfd_elf_generic_reloc, /* special_function */ 291 "R_TILEGX_HW1_LAST", /* name */ 292 FALSE, /* partial_inplace */ 293 0, /* src_mask */ 294 0xffff, /* dst_mask */ 295 FALSE), /* pcrel_offset */ 296 297 /* A 16 bit relocation with overflow. */ 298 HOWTO (R_TILEGX_HW2_LAST, /* type */ 299 32, /* rightshift */ 300 1, /* size (0 = byte, 1 = short, 2 = long) */ 301 16, /* bitsize */ 302 FALSE, /* pc_relative */ 303 0, /* bitpos */ 304 complain_overflow_signed,/* complain_on_overflow */ 305 bfd_elf_generic_reloc, /* special_function */ 306 "R_TILEGX_HW2_LAST", /* name */ 307 FALSE, /* partial_inplace */ 308 0, /* src_mask */ 309 0xffff, /* dst_mask */ 310 FALSE), /* pcrel_offset */ 311 312 HOWTO (R_TILEGX_COPY, /* type */ 313 0, /* rightshift */ 314 0, /* size (0 = byte, 1 = short, 2 = long) */ 315 0, /* bitsize */ 316 FALSE, /* pc_relative */ 317 0, /* bitpos */ 318 complain_overflow_dont, /* complain_on_overflow */ 319 bfd_elf_generic_reloc, /* special_function */ 320 "R_TILEGX_COPY", /* name */ 321 FALSE, /* partial_inplace */ 322 0, /* src_mask */ 323 0, /* dst_mask */ 324 TRUE), /* pcrel_offset */ 325 326 HOWTO (R_TILEGX_GLOB_DAT, /* type */ 327 0, /* rightshift */ 328 0, /* size (0 = byte, 1 = short, 2 = long) */ 329 0, /* bitsize */ 330 FALSE, /* pc_relative */ 331 0, /* bitpos */ 332 complain_overflow_dont, /* complain_on_overflow */ 333 bfd_elf_generic_reloc, /* special_function */ 334 "R_TILEGX_GLOB_DAT", /* name */ 335 FALSE, /* partial_inplace */ 336 0, /* src_mask */ 337 0, /* dst_mask */ 338 TRUE), /* pcrel_offset */ 339 340 HOWTO (R_TILEGX_JMP_SLOT, /* type */ 341 0, /* rightshift */ 342 0, /* size (0 = byte, 1 = short, 2 = long) */ 343 0, /* bitsize */ 344 FALSE, /* pc_relative */ 345 0, /* bitpos */ 346 complain_overflow_dont, /* complain_on_overflow */ 347 bfd_elf_generic_reloc, /* special_function */ 348 "R_TILEGX_JMP_SLOT", /* name */ 349 FALSE, /* partial_inplace */ 350 0, /* src_mask */ 351 0, /* dst_mask */ 352 TRUE), /* pcrel_offset */ 353 354 HOWTO (R_TILEGX_RELATIVE, /* type */ 355 0, /* rightshift */ 356 0, /* size (0 = byte, 1 = short, 2 = long) */ 357 0, /* bitsize */ 358 FALSE, /* pc_relative */ 359 0, /* bitpos */ 360 complain_overflow_dont, /* complain_on_overflow */ 361 bfd_elf_generic_reloc, /* special_function */ 362 "R_TILEGX_RELATIVE", /* name */ 363 FALSE, /* partial_inplace */ 364 0, /* src_mask */ 365 0, /* dst_mask */ 366 TRUE), /* pcrel_offset */ 367 368 HOWTO (R_TILEGX_BROFF_X1, /* type */ 369 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ 370 2, /* size (0 = byte, 1 = short, 2 = long) */ 371 17, /* bitsize */ 372 TRUE, /* pc_relative */ 373 0, /* bitpos */ 374 complain_overflow_signed, /* complain_on_overflow */ 375 bfd_elf_generic_reloc, /* special_function */ 376 "R_TILEGX_BROFF_X1", /* name */ 377 FALSE, /* partial_inplace */ 378 0, /* src_mask */ 379 -1, /* dst_mask */ 380 TRUE), /* pcrel_offset */ 381 382 HOWTO (R_TILEGX_JUMPOFF_X1, /* type */ 383 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ 384 2, /* size (0 = byte, 1 = short, 2 = long) */ 385 27, /* bitsize */ 386 TRUE, /* pc_relative */ 387 0, /* bitpos */ 388 complain_overflow_signed,/* complain_on_overflow */ 389 bfd_elf_generic_reloc, /* special_function */ 390 "R_TILEGX_JUMPOFF_X1", /* name */ 391 FALSE, /* partial_inplace */ 392 0, /* src_mask */ 393 -1, /* dst_mask */ 394 TRUE), /* pcrel_offset */ 395 396 HOWTO (R_TILEGX_JUMPOFF_X1_PLT, /* type */ 397 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ 398 2, /* size (0 = byte, 1 = short, 2 = long) */ 399 27, /* bitsize */ 400 TRUE, /* pc_relative */ 401 0, /* bitpos */ 402 complain_overflow_signed,/* complain_on_overflow */ 403 bfd_elf_generic_reloc, /* special_function */ 404 "R_TILEGX_JUMPOFF_X1_PLT", /* name */ 405 FALSE, /* partial_inplace */ 406 0, /* src_mask */ 407 -1, /* dst_mask */ 408 TRUE), /* pcrel_offset */ 409 410 #define TILEGX_IMM_HOWTO(name, size, bitsize) \ 411 HOWTO (name, 0, size, bitsize, FALSE, 0, \ 412 complain_overflow_signed, bfd_elf_generic_reloc, \ 413 #name, FALSE, 0, -1, FALSE) 414 415 #define TILEGX_UIMM_HOWTO(name, size, bitsize) \ 416 HOWTO (name, 0, size, bitsize, FALSE, 0, \ 417 complain_overflow_unsigned, bfd_elf_generic_reloc, \ 418 #name, FALSE, 0, -1, FALSE) 419 420 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0, 0, 8), 421 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0, 0, 8), 422 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1, 0, 8), 423 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1, 0, 8), 424 TILEGX_IMM_HOWTO(R_TILEGX_DEST_IMM8_X1, 0, 8), 425 426 TILEGX_UIMM_HOWTO(R_TILEGX_MT_IMM14_X1, 1, 14), 427 TILEGX_UIMM_HOWTO(R_TILEGX_MF_IMM14_X1, 1, 14), 428 429 TILEGX_UIMM_HOWTO(R_TILEGX_MMSTART_X0, 0, 6), 430 TILEGX_UIMM_HOWTO(R_TILEGX_MMEND_X0, 0, 6), 431 432 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_X0, 0, 6), 433 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_X1, 0, 6), 434 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_Y0, 0, 6), 435 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_Y1, 0, 6), 436 437 #define TILEGX_IMM16_HOWTO(name, rshift) \ 438 HOWTO (name, rshift, 1, 16, FALSE, 0, \ 439 complain_overflow_dont, bfd_elf_generic_reloc, \ 440 #name, FALSE, 0, 0xffff, FALSE) 441 442 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0, 0), 443 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0, 0), 444 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW1, 16), 445 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW1, 16), 446 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW2, 32), 447 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW2, 32), 448 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW3, 48), 449 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW3, 48), 450 451 #define TILEGX_IMM16_HOWTO_LAST(name, rshift) \ 452 HOWTO (name, rshift, 1, 16, FALSE, 0, \ 453 complain_overflow_signed, bfd_elf_generic_reloc, \ 454 #name, FALSE, 0, 0xffff, FALSE) 455 456 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST, 0), 457 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST, 0), 458 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST, 16), 459 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST, 16), 460 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW2_LAST, 32), 461 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW2_LAST, 32), 462 463 /* PC-relative offsets. */ 464 465 #define TILEGX_IMM16_HOWTO_PCREL(name, rshift) \ 466 HOWTO (name, rshift, 1, 16, TRUE, 0, \ 467 complain_overflow_dont, bfd_elf_generic_reloc, \ 468 #name, FALSE, 0, 0xffff, TRUE) 469 470 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW0_PCREL, 0), 471 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW0_PCREL, 0), 472 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW1_PCREL, 16), 473 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW1_PCREL, 16), 474 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW2_PCREL, 32), 475 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW2_PCREL, 32), 476 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW3_PCREL, 48), 477 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW3_PCREL, 48), 478 479 #define TILEGX_IMM16_HOWTO_LAST_PCREL(name, rshift) \ 480 HOWTO (name, rshift, 1, 16, TRUE, 0, \ 481 complain_overflow_signed, bfd_elf_generic_reloc, \ 482 #name, FALSE, 0, 0xffff, TRUE) 483 484 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW0_LAST_PCREL, 0), 485 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW0_LAST_PCREL, 0), 486 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW1_LAST_PCREL, 16), 487 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW1_LAST_PCREL, 16), 488 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW2_LAST_PCREL, 32), 489 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW2_LAST_PCREL, 32), 490 491 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_GOT, 0), 492 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_GOT, 0), 493 494 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW0_PLT_PCREL, 0), 495 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW0_PLT_PCREL, 0), 496 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW1_PLT_PCREL, 16), 497 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW1_PLT_PCREL, 16), 498 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW2_PLT_PCREL, 32), 499 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW2_PLT_PCREL, 32), 500 501 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_GOT, 0), 502 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_GOT, 0), 503 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_GOT, 16), 504 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_GOT, 16), 505 506 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW3_PLT_PCREL, 48), 507 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW3_PLT_PCREL, 48), 508 509 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_TLS_GD, 0), 510 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_TLS_GD, 0), 511 512 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_TLS_LE, 0), 513 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_TLS_LE, 0), 514 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE, 0), 515 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE, 0), 516 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE, 16), 517 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE, 16), 518 519 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD, 0), 520 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD, 0), 521 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD, 16), 522 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD, 16), 523 EMPTY_HOWTO (90), 524 EMPTY_HOWTO (91), 525 526 #define TILEGX_IMM16_HOWTO_TLS_IE(name, rshift) \ 527 HOWTO (name, rshift, 1, 16, FALSE, 0, \ 528 complain_overflow_dont, bfd_elf_generic_reloc, \ 529 #name, FALSE, 0, 0xffff, TRUE) 530 531 TILEGX_IMM16_HOWTO_TLS_IE (R_TILEGX_IMM16_X0_HW0_TLS_IE, 0), 532 TILEGX_IMM16_HOWTO_TLS_IE (R_TILEGX_IMM16_X1_HW0_TLS_IE, 0), 533 534 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL, 0), 535 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL, 0), 536 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL, 16), 537 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL, 16), 538 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL, 32), 539 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL, 32), 540 541 #define TILEGX_IMM16_HOWTO_LAST_TLS_IE(name, rshift) \ 542 HOWTO (name, rshift, 1, 16, FALSE, 0, \ 543 complain_overflow_signed, bfd_elf_generic_reloc, \ 544 #name, FALSE, 0, 0xffff, TRUE) 545 546 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE, 0), 547 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE, 0), 548 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE, 16), 549 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE, 16), 550 EMPTY_HOWTO (104), 551 EMPTY_HOWTO (105), 552 553 HOWTO(R_TILEGX_TLS_DTPMOD64, 0, 0, 0, FALSE, 0, complain_overflow_dont, 554 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPMOD64", 555 FALSE, 0, 0, TRUE), 556 HOWTO(R_TILEGX_TLS_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, 557 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPOFF64", 558 FALSE, 0, -1, TRUE), 559 HOWTO(R_TILEGX_TLS_TPOFF64, 0, 0, 0, FALSE, 0, complain_overflow_dont, 560 bfd_elf_generic_reloc, "R_TILEGX_TLS_TPOFF64", 561 FALSE, 0, 0, TRUE), 562 563 HOWTO(R_TILEGX_TLS_DTPMOD32, 0, 0, 0, FALSE, 0, complain_overflow_dont, 564 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPMOD32", 565 FALSE, 0, 0, TRUE), 566 HOWTO(R_TILEGX_TLS_DTPOFF32, 0, 4, 32, FALSE, 0, complain_overflow_bitfield, 567 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPOFF32", 568 FALSE, 0, -1, TRUE), 569 HOWTO(R_TILEGX_TLS_TPOFF32, 0, 0, 0, FALSE, 0, complain_overflow_dont, 570 bfd_elf_generic_reloc, "R_TILEGX_TLS_TPOFF32", 571 FALSE, 0, 0, TRUE), 572 573 HOWTO (R_TILEGX_TLS_GD_CALL, /* type */ 574 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ 575 2, /* size (0 = byte, 1 = short, 2 = long) */ 576 27, /* bitsize */ 577 TRUE, /* pc_relative */ 578 0, /* bitpos */ 579 complain_overflow_signed,/* complain_on_overflow */ 580 bfd_elf_generic_reloc, /* special_function */ 581 "R_TILEGX_TLS_GD_CALL", /* name */ 582 FALSE, /* partial_inplace */ 583 0, /* src_mask */ 584 -1, /* dst_mask */ 585 TRUE), /* pcrel_offset */ 586 587 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0_TLS_GD_ADD, 0, 8), 588 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_GD_ADD, 0, 8), 589 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_GD_ADD, 0, 8), 590 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_GD_ADD, 0, 8), 591 TILEGX_IMM_HOWTO(R_TILEGX_TLS_IE_LOAD, 0, 8), 592 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0_TLS_ADD, 0, 8), 593 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_ADD, 0, 8), 594 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_ADD, 0, 8), 595 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_ADD, 0, 8), 596 }; 597 598 static reloc_howto_type tilegx_elf_howto_table2 [] = 599 { 600 /* GNU extension to record C++ vtable hierarchy */ 601 HOWTO (R_TILEGX_GNU_VTINHERIT, /* type */ 602 0, /* rightshift */ 603 4, /* size (0 = byte, 1 = short, 2 = long) */ 604 0, /* bitsize */ 605 FALSE, /* pc_relative */ 606 0, /* bitpos */ 607 complain_overflow_dont, /* complain_on_overflow */ 608 NULL, /* special_function */ 609 "R_TILEGX_GNU_VTINHERIT", /* name */ 610 FALSE, /* partial_inplace */ 611 0, /* src_mask */ 612 0, /* dst_mask */ 613 FALSE), /* pcrel_offset */ 614 615 /* GNU extension to record C++ vtable member usage */ 616 HOWTO (R_TILEGX_GNU_VTENTRY, /* type */ 617 0, /* rightshift */ 618 4, /* size (0 = byte, 1 = short, 2 = long) */ 619 0, /* bitsize */ 620 FALSE, /* pc_relative */ 621 0, /* bitpos */ 622 complain_overflow_dont, /* complain_on_overflow */ 623 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 624 "R_TILEGX_GNU_VTENTRY", /* name */ 625 FALSE, /* partial_inplace */ 626 0, /* src_mask */ 627 0, /* dst_mask */ 628 FALSE), /* pcrel_offset */ 629 630 }; 631 632 /* Map BFD reloc types to TILEGX ELF reloc types. */ 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 /* TILEGX ELF linker hash entry. */ 784 785 struct tilegx_elf_link_hash_entry 786 { 787 struct elf_link_hash_entry elf; 788 789 /* Track dynamic relocs copied for this symbol. */ 790 struct elf_dyn_relocs *dyn_relocs; 791 792 #define GOT_UNKNOWN 0 793 #define GOT_NORMAL 1 794 #define GOT_TLS_GD 2 795 #define GOT_TLS_IE 4 796 unsigned char tls_type; 797 }; 798 799 #define tilegx_elf_hash_entry(ent) \ 800 ((struct tilegx_elf_link_hash_entry *)(ent)) 801 802 struct _bfd_tilegx_elf_obj_tdata 803 { 804 struct elf_obj_tdata root; 805 806 /* tls_type for each local got entry. */ 807 char *local_got_tls_type; 808 }; 809 810 #define _bfd_tilegx_elf_tdata(abfd) \ 811 ((struct _bfd_tilegx_elf_obj_tdata *) (abfd)->tdata.any) 812 813 #define _bfd_tilegx_elf_local_got_tls_type(abfd) \ 814 (_bfd_tilegx_elf_tdata (abfd)->local_got_tls_type) 815 816 #define is_tilegx_elf(bfd) \ 817 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ 818 && elf_tdata (bfd) != NULL \ 819 && elf_object_id (bfd) == TILEGX_ELF_DATA) 820 821 #include "elf/common.h" 822 #include "elf/internal.h" 823 824 struct tilegx_elf_link_hash_table 825 { 826 struct elf_link_hash_table elf; 827 828 int bytes_per_word; 829 int word_align_power; 830 int bytes_per_rela; 831 int dtpmod_reloc; 832 int dtpoff_reloc; 833 int tpoff_reloc; 834 bfd_vma (*r_info) (Elf_Internal_Rela *, bfd_vma, bfd_vma); 835 bfd_vma (*r_symndx) (bfd_vma); 836 void (*put_word) (bfd *, bfd_vma, void *); 837 const char *dynamic_interpreter; 838 839 /* Whether LE transition has been disabled for some of the 840 sections. */ 841 bfd_boolean disable_le_transition; 842 843 /* Small local sym to section mapping cache. */ 844 struct sym_cache sym_cache; 845 }; 846 847 848 /* Get the Tile ELF linker hash table from a link_info structure. */ 849 #define tilegx_elf_hash_table(p) \ 850 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 851 == TILEGX_ELF_DATA ? ((struct tilegx_elf_link_hash_table *) ((p)->hash)) : NULL) 852 853 #ifdef BFD64 854 static bfd_vma 855 tilegx_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED, 856 bfd_vma rel_index, 857 bfd_vma type) 858 { 859 return ELF64_R_INFO (rel_index, type); 860 } 861 862 static bfd_vma 863 tilegx_elf_r_symndx_64 (bfd_vma r_info) 864 { 865 return ELF64_R_SYM (r_info); 866 } 867 868 static void 869 tilegx_put_word_64 (bfd *abfd, bfd_vma val, void *ptr) 870 { 871 bfd_put_64 (abfd, val, ptr); 872 } 873 #endif /* BFD64 */ 874 875 static bfd_vma 876 tilegx_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED, 877 bfd_vma rel_index, 878 bfd_vma type) 879 { 880 return ELF32_R_INFO (rel_index, type); 881 } 882 883 static bfd_vma 884 tilegx_elf_r_symndx_32 (bfd_vma r_info) 885 { 886 return ELF32_R_SYM (r_info); 887 } 888 889 static void 890 tilegx_put_word_32 (bfd *abfd, bfd_vma val, void *ptr) 891 { 892 bfd_put_32 (abfd, val, ptr); 893 } 894 895 reloc_howto_type * 896 tilegx_reloc_type_lookup (bfd * abfd, 897 bfd_reloc_code_real_type code) 898 { 899 unsigned int i; 900 901 for (i = ARRAY_SIZE (tilegx_reloc_map); i--;) 902 { 903 const reloc_map * entry; 904 905 entry = tilegx_reloc_map + i; 906 907 if (entry->bfd_reloc_val == code) 908 return entry->table + (entry->tilegx_reloc_val 909 - entry->table[0].type); 910 } 911 912 /* xgettext:c-format */ 913 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), 914 abfd, (int) code); 915 bfd_set_error (bfd_error_bad_value); 916 return NULL; 917 } 918 919 reloc_howto_type * 920 tilegx_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 921 const char *r_name) 922 { 923 unsigned int i; 924 925 for (i = 0; 926 i < (sizeof (tilegx_elf_howto_table) 927 / sizeof (tilegx_elf_howto_table[0])); 928 i++) 929 if (tilegx_elf_howto_table[i].name != NULL 930 && strcasecmp (tilegx_elf_howto_table[i].name, r_name) == 0) 931 return &tilegx_elf_howto_table[i]; 932 933 return NULL; 934 } 935 936 bfd_boolean 937 tilegx_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, 938 arelent *cache_ptr, 939 Elf_Internal_Rela *dst) 940 { 941 unsigned int r_type = TILEGX_ELF_R_TYPE (dst->r_info); 942 943 if (r_type <= (unsigned int) R_TILEGX_IMM8_Y1_TLS_ADD) 944 cache_ptr->howto = &tilegx_elf_howto_table [r_type]; 945 else if (r_type - R_TILEGX_GNU_VTINHERIT 946 <= ((unsigned int) R_TILEGX_GNU_VTENTRY 947 - (unsigned int) R_TILEGX_GNU_VTINHERIT)) 948 cache_ptr->howto 949 = &tilegx_elf_howto_table2 [r_type - R_TILEGX_GNU_VTINHERIT]; 950 else 951 { 952 /* xgettext:c-format */ 953 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), 954 abfd, r_type); 955 bfd_set_error (bfd_error_bad_value); 956 return FALSE; 957 } 958 return TRUE; 959 } 960 961 typedef tilegx_bundle_bits (*tilegx_create_func)(int); 962 963 static const tilegx_create_func reloc_to_create_func[] = 964 { 965 /* The first twenty relocation types don't correspond to operands */ 966 NULL, 967 NULL, 968 NULL, 969 NULL, 970 NULL, 971 NULL, 972 NULL, 973 NULL, 974 NULL, 975 NULL, 976 NULL, 977 NULL, 978 NULL, 979 NULL, 980 NULL, 981 NULL, 982 NULL, 983 NULL, 984 NULL, 985 NULL, 986 987 /* The remaining relocations are used for immediate operands */ 988 create_BrOff_X1, 989 create_JumpOff_X1, 990 create_JumpOff_X1, 991 create_Imm8_X0, 992 create_Imm8_Y0, 993 create_Imm8_X1, 994 create_Imm8_Y1, 995 create_Dest_Imm8_X1, 996 create_MT_Imm14_X1, 997 create_MF_Imm14_X1, 998 create_BFStart_X0, 999 create_BFEnd_X0, 1000 create_ShAmt_X0, 1001 create_ShAmt_X1, 1002 create_ShAmt_Y0, 1003 create_ShAmt_Y1, 1004 create_Imm16_X0, 1005 create_Imm16_X1, 1006 create_Imm16_X0, 1007 create_Imm16_X1, 1008 create_Imm16_X0, 1009 create_Imm16_X1, 1010 create_Imm16_X0, 1011 create_Imm16_X1, 1012 create_Imm16_X0, 1013 create_Imm16_X1, 1014 create_Imm16_X0, 1015 create_Imm16_X1, 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 NULL, 1059 NULL, 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 create_Imm16_X0, 1071 create_Imm16_X1, 1072 }; 1073 1074 static void 1075 tilegx_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel) 1076 { 1077 const struct elf_backend_data *bed; 1078 bfd_byte *loc; 1079 1080 bed = get_elf_backend_data (abfd); 1081 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela); 1082 bed->s->swap_reloca_out (abfd, rel, loc); 1083 } 1084 1085 /* PLT/GOT stuff */ 1086 1087 /* The procedure linkage table starts with the following header: 1088 1089 ld_add r28, r27, 8 1090 ld r27, r27 1091 { 1092 jr r27 1093 info 10 ## SP not offset, return PC in LR 1094 } 1095 1096 Subsequent entries are the following, jumping to the header at the end: 1097 1098 { 1099 moveli r28, <_GLOBAL_OFFSET_TABLE_ - 1f + MY_GOT_OFFSET> 1100 lnk r26 1101 } 1102 1: 1103 { 1104 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b> 1105 shl16insli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET> 1106 } 1107 { 1108 add r28, r26, r28 1109 shl16insli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b> 1110 } 1111 { 1112 add r27, r26, r27 1113 ld r28, r28 1114 info 10 ## SP not offset, return PC in LR 1115 } 1116 { 1117 shl16insli r29, zero, MY_PLT_INDEX 1118 jr r28 1119 } 1120 1121 This code sequence lets the code at at the start of the PLT determine 1122 which PLT entry was executed by examining 'r29'. 1123 1124 Note that MY_PLT_INDEX skips over the header entries, so the first 1125 actual jump table entry has index zero. 1126 1127 If the offset fits in 16 bits, 1128 1129 lnk r26 1130 1: 1131 { 1132 addli r28, r26, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET> 1133 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b> 1134 } 1135 { 1136 shl16insli r29, zero, MY_PLT_INDEX 1137 ld r28, r28 1138 } 1139 { 1140 add r27, r26, r27 1141 jr r28 1142 } 1143 info 10 ## SP not offset, return PC in LR 1144 1145 For the purpose of backtracing, the procedure linkage table ends with the 1146 following tail entry: 1147 1148 info 10 ## SP not offset, return PC in LR 1149 1150 The 32-bit versions are similar, with ld4s replacing ld, and offsets into 1151 the GOT being multiples of 4 instead of 8. 1152 1153 */ 1154 1155 #define PLT_HEADER_SIZE_IN_BUNDLES 3 1156 #define PLT_ENTRY_SIZE_IN_BUNDLES 5 1157 #define PLT_TAIL_SIZE_IN_BUNDLES 1 1158 1159 #define PLT_HEADER_SIZE \ 1160 (PLT_HEADER_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES) 1161 #define PLT_ENTRY_SIZE \ 1162 (PLT_ENTRY_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES) 1163 #define PLT_TAIL_SIZE \ 1164 (PLT_TAIL_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES) 1165 1166 #define GOT_ENTRY_SIZE(htab) TILEGX_ELF_WORD_BYTES (htab) 1167 1168 #define GOTPLT_HEADER_SIZE(htab) (2 * GOT_ENTRY_SIZE (htab)) 1169 1170 static const bfd_byte 1171 tilegx64_plt0_entry[PLT_HEADER_SIZE] = 1172 { 1173 0x00, 0x30, 0x48, 0x51, 1174 0x6e, 0x43, 0xa0, 0x18, /* { ld_add r28, r27, 8 } */ 1175 0x00, 0x30, 0xbc, 0x35, 1176 0x00, 0x40, 0xde, 0x9e, /* { ld r27, r27 } */ 1177 0xff, 0xaf, 0x30, 0x40, 1178 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */ 1179 }; 1180 1181 static const bfd_byte 1182 tilegx64_long_plt_entry[PLT_ENTRY_SIZE] = 1183 { 1184 0xdc, 0x0f, 0x00, 0x10, 1185 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */ 1186 0xdb, 0x0f, 0x00, 0x10, 1187 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */ 1188 0x9c, 0xc6, 0x0d, 0xd0, 1189 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */ 1190 0x9b, 0xb6, 0xc5, 0xad, 1191 0xff, 0x57, 0xe0, 0x8e, /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */ 1192 0xdd, 0x0f, 0x00, 0x70, 1193 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */ 1194 }; 1195 1196 static const bfd_byte 1197 tilegx64_short_plt_entry[PLT_ENTRY_SIZE] = 1198 { 1199 0x00, 0x30, 0x48, 0x51, 1200 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */ 1201 0x9c, 0x06, 0x00, 0x90, 1202 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */ 1203 0xdd, 0x0f, 0x00, 0x70, 1204 0x8e, 0xeb, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld r28, r28 } */ 1205 0x9b, 0xb6, 0x0d, 0x50, 1206 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */ 1207 0x00, 0x30, 0x48, 0xd1, 1208 0xff, 0x57, 0x18, 0x18, /* { info 10 } */ 1209 }; 1210 1211 /* Reuse an existing info 10 bundle. */ 1212 static const bfd_byte *const tilegx64_plt_tail_entry = 1213 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES]; 1214 1215 static const bfd_byte 1216 tilegx32_plt0_entry[PLT_HEADER_SIZE] = 1217 { 1218 0x00, 0x30, 0x48, 0x51, 1219 0x6e, 0x23, 0x58, 0x18, /* { ld4s_add r28, r27, 4 } */ 1220 0x00, 0x30, 0xbc, 0x35, 1221 0x00, 0x40, 0xde, 0x9c, /* { ld4s r27, r27 } */ 1222 0xff, 0xaf, 0x30, 0x40, 1223 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */ 1224 }; 1225 1226 static const bfd_byte 1227 tilegx32_long_plt_entry[PLT_ENTRY_SIZE] = 1228 { 1229 0xdc, 0x0f, 0x00, 0x10, 1230 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */ 1231 0xdb, 0x0f, 0x00, 0x10, 1232 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */ 1233 0x9c, 0xc6, 0x0d, 0xd0, 1234 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */ 1235 0x9b, 0xb6, 0xc5, 0xad, 1236 0xff, 0x57, 0xe0, 0x8c, /* { add r27, r26, r27 ; info 10 ; ld4s r28, r28 } */ 1237 0xdd, 0x0f, 0x00, 0x70, 1238 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */ 1239 }; 1240 1241 static const bfd_byte 1242 tilegx32_short_plt_entry[PLT_ENTRY_SIZE] = 1243 { 1244 0x00, 0x30, 0x48, 0x51, 1245 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */ 1246 0x9c, 0x06, 0x00, 0x90, 1247 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */ 1248 0xdd, 0x0f, 0x00, 0x70, 1249 0x8e, 0x9b, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld4s r28, r28 } */ 1250 0x9b, 0xb6, 0x0d, 0x50, 1251 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */ 1252 0x00, 0x30, 0x48, 0xd1, 1253 0xff, 0x57, 0x18, 0x18, /* { info 10 } */ 1254 }; 1255 1256 /* Reuse an existing info 10 bundle. */ 1257 static const bfd_byte *const tilegx32_plt_tail_entry = 1258 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES]; 1259 1260 static int 1261 tilegx_plt_entry_build (bfd *output_bfd, 1262 struct tilegx_elf_link_hash_table *htab, 1263 asection *splt, asection *sgotplt, 1264 bfd_vma offset, bfd_vma *r_offset) 1265 { 1266 int plt_index = (offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; 1267 int got_offset = (plt_index * GOT_ENTRY_SIZE (htab) 1268 + GOTPLT_HEADER_SIZE (htab)); 1269 tilegx_bundle_bits *pc; 1270 1271 /* Compute the distance from the got entry to the lnk. */ 1272 bfd_signed_vma dist_got_entry = sgotplt->output_section->vma 1273 + sgotplt->output_offset 1274 + got_offset 1275 - splt->output_section->vma 1276 - splt->output_offset 1277 - offset 1278 - TILEGX_BUNDLE_SIZE_IN_BYTES; 1279 1280 /* Compute the distance to GOTPLT[0]. */ 1281 bfd_signed_vma dist_got0 = dist_got_entry - got_offset; 1282 1283 /* Check whether we can use the short plt entry with 16-bit offset. */ 1284 bfd_boolean short_plt_entry = 1285 (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000); 1286 1287 const tilegx_bundle_bits *plt_entry = (tilegx_bundle_bits *) 1288 (ABI_64_P (output_bfd) ? 1289 (short_plt_entry ? tilegx64_short_plt_entry : tilegx64_long_plt_entry) : 1290 (short_plt_entry ? tilegx32_short_plt_entry : tilegx32_long_plt_entry)); 1291 1292 /* Copy the plt entry template. */ 1293 memcpy (splt->contents + offset, plt_entry, PLT_ENTRY_SIZE); 1294 1295 /* Write the immediate offsets. */ 1296 pc = (tilegx_bundle_bits *)(splt->contents + offset); 1297 1298 if (short_plt_entry) 1299 { 1300 /* { lnk r28 } */ 1301 pc++; 1302 1303 /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; moveli r27, &GOTPLT[0] } */ 1304 *pc++ |= create_Imm16_X0 (dist_got_entry) 1305 | create_Imm16_X1 (dist_got0); 1306 1307 /* { shl16insli r29, zero, MY_PLT_INDEX ; ld r28, r28 } */ 1308 *pc++ |= create_Imm16_X0 (plt_index); 1309 } 1310 else 1311 { 1312 /* { moveli r28, &GOTPLT[MY_GOT_INDEX] ; lnk r26 } */ 1313 *pc++ |= create_Imm16_X0 (dist_got_entry >> 16); 1314 1315 /* { moveli r27, &GOTPLT[0] ; 1316 shl16insli r28, r28, &GOTPLT[MY_GOT_INDEX] } */ 1317 *pc++ |= create_Imm16_X0 (dist_got0 >> 16) 1318 | create_Imm16_X1 (dist_got_entry); 1319 1320 /* { add r28, r26, r28 ; shl16insli r27, r27, &GOTPLT[0] } */ 1321 *pc++ |= create_Imm16_X1 (dist_got0); 1322 1323 /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */ 1324 pc++; 1325 1326 /* { shl16insli r29, zero, MY_GOT_INDEX ; jr r28 } */ 1327 *pc++ |= create_Imm16_X0 (plt_index); 1328 } 1329 1330 /* Set the relocation offset. */ 1331 *r_offset = got_offset; 1332 1333 return plt_index; 1334 } 1335 1336 /* Create an entry in an TILEGX ELF linker hash table. */ 1337 1338 static struct bfd_hash_entry * 1339 link_hash_newfunc (struct bfd_hash_entry *entry, 1340 struct bfd_hash_table *table, const char *string) 1341 { 1342 /* Allocate the structure if it has not already been allocated by a 1343 subclass. */ 1344 if (entry == NULL) 1345 { 1346 entry = 1347 bfd_hash_allocate (table, 1348 sizeof (struct tilegx_elf_link_hash_entry)); 1349 if (entry == NULL) 1350 return entry; 1351 } 1352 1353 /* Call the allocation method of the superclass. */ 1354 entry = _bfd_elf_link_hash_newfunc (entry, table, string); 1355 if (entry != NULL) 1356 { 1357 struct tilegx_elf_link_hash_entry *eh; 1358 1359 eh = (struct tilegx_elf_link_hash_entry *) entry; 1360 eh->dyn_relocs = NULL; 1361 eh->tls_type = GOT_UNKNOWN; 1362 } 1363 1364 return entry; 1365 } 1366 1367 /* Create a TILEGX ELF linker hash table. */ 1368 1369 struct bfd_link_hash_table * 1370 tilegx_elf_link_hash_table_create (bfd *abfd) 1371 { 1372 struct tilegx_elf_link_hash_table *ret; 1373 bfd_size_type amt = sizeof (struct tilegx_elf_link_hash_table); 1374 1375 ret = (struct tilegx_elf_link_hash_table *) bfd_zmalloc (amt); 1376 if (ret == NULL) 1377 return NULL; 1378 1379 #ifdef BFD64 1380 if (ABI_64_P (abfd)) 1381 { 1382 ret->bytes_per_word = 8; 1383 ret->word_align_power = 3; 1384 ret->bytes_per_rela = sizeof (Elf64_External_Rela); 1385 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF64; 1386 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD64; 1387 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF64; 1388 ret->r_info = tilegx_elf_r_info_64; 1389 ret->r_symndx = tilegx_elf_r_symndx_64; 1390 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER; 1391 ret->put_word = tilegx_put_word_64; 1392 } 1393 else 1394 #endif 1395 { 1396 ret->bytes_per_word = 4; 1397 ret->word_align_power = 2; 1398 ret->bytes_per_rela = sizeof (Elf32_External_Rela); 1399 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF32; 1400 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD32; 1401 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF32; 1402 ret->r_info = tilegx_elf_r_info_32; 1403 ret->r_symndx = tilegx_elf_r_symndx_32; 1404 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER; 1405 ret->put_word = tilegx_put_word_32; 1406 } 1407 1408 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, 1409 sizeof (struct tilegx_elf_link_hash_entry), 1410 TILEGX_ELF_DATA)) 1411 { 1412 free (ret); 1413 return NULL; 1414 } 1415 1416 return &ret->elf.root; 1417 } 1418 1419 /* Create the .got section. */ 1420 1421 static bfd_boolean 1422 tilegx_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) 1423 { 1424 flagword flags; 1425 asection *s, *s_got; 1426 struct elf_link_hash_entry *h; 1427 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 1428 struct elf_link_hash_table *htab = elf_hash_table (info); 1429 1430 /* This function may be called more than once. */ 1431 if (htab->sgot != NULL) 1432 return TRUE; 1433 1434 flags = bed->dynamic_sec_flags; 1435 1436 s = bfd_make_section_anyway_with_flags (abfd, 1437 (bed->rela_plts_and_copies_p 1438 ? ".rela.got" : ".rel.got"), 1439 (bed->dynamic_sec_flags 1440 | SEC_READONLY)); 1441 if (s == NULL 1442 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 1443 return FALSE; 1444 htab->srelgot = s; 1445 1446 s = s_got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); 1447 if (s == NULL 1448 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 1449 return FALSE; 1450 htab->sgot = s; 1451 1452 /* The first bit of the global offset table is the header. */ 1453 s->size += bed->got_header_size; 1454 1455 if (bed->want_got_plt) 1456 { 1457 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); 1458 if (s == NULL 1459 || !bfd_set_section_alignment (abfd, s, 1460 bed->s->log_file_align)) 1461 return FALSE; 1462 htab->sgotplt = s; 1463 1464 /* Reserve room for the header. */ 1465 s->size += GOTPLT_HEADER_SIZE (tilegx_elf_hash_table (info)); 1466 } 1467 1468 if (bed->want_got_sym) 1469 { 1470 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got 1471 section. We don't do this in the linker script because we don't want 1472 to define the symbol if we are not creating a global offset 1473 table. */ 1474 h = _bfd_elf_define_linkage_sym (abfd, info, s_got, 1475 "_GLOBAL_OFFSET_TABLE_"); 1476 elf_hash_table (info)->hgot = h; 1477 if (h == NULL) 1478 return FALSE; 1479 } 1480 1481 return TRUE; 1482 } 1483 1484 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and 1485 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our 1486 hash table. */ 1487 1488 bfd_boolean 1489 tilegx_elf_create_dynamic_sections (bfd *dynobj, 1490 struct bfd_link_info *info) 1491 { 1492 if (!tilegx_elf_create_got_section (dynobj, info)) 1493 return FALSE; 1494 1495 return _bfd_elf_create_dynamic_sections (dynobj, info); 1496 } 1497 1498 /* Copy the extra info we tack onto an elf_link_hash_entry. */ 1499 1500 void 1501 tilegx_elf_copy_indirect_symbol (struct bfd_link_info *info, 1502 struct elf_link_hash_entry *dir, 1503 struct elf_link_hash_entry *ind) 1504 { 1505 struct tilegx_elf_link_hash_entry *edir, *eind; 1506 1507 edir = (struct tilegx_elf_link_hash_entry *) dir; 1508 eind = (struct tilegx_elf_link_hash_entry *) ind; 1509 1510 if (eind->dyn_relocs != NULL) 1511 { 1512 if (edir->dyn_relocs != NULL) 1513 { 1514 struct elf_dyn_relocs **pp; 1515 struct elf_dyn_relocs *p; 1516 1517 /* Add reloc counts against the indirect sym to the direct sym 1518 list. Merge any entries against the same section. */ 1519 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) 1520 { 1521 struct elf_dyn_relocs *q; 1522 1523 for (q = edir->dyn_relocs; q != NULL; q = q->next) 1524 if (q->sec == p->sec) 1525 { 1526 q->pc_count += p->pc_count; 1527 q->count += p->count; 1528 *pp = p->next; 1529 break; 1530 } 1531 if (q == NULL) 1532 pp = &p->next; 1533 } 1534 *pp = edir->dyn_relocs; 1535 } 1536 1537 edir->dyn_relocs = eind->dyn_relocs; 1538 eind->dyn_relocs = NULL; 1539 } 1540 1541 if (ind->root.type == bfd_link_hash_indirect 1542 && dir->got.refcount <= 0) 1543 { 1544 edir->tls_type = eind->tls_type; 1545 eind->tls_type = GOT_UNKNOWN; 1546 } 1547 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 1548 } 1549 1550 static int 1551 tilegx_tls_translate_to_le (int r_type) 1552 { 1553 switch (r_type) 1554 { 1555 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 1556 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 1557 return R_TILEGX_IMM16_X0_HW0_TLS_LE; 1558 1559 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 1560 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 1561 return R_TILEGX_IMM16_X1_HW0_TLS_LE; 1562 1563 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 1564 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 1565 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE; 1566 1567 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 1568 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 1569 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE; 1570 1571 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 1572 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 1573 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE; 1574 1575 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 1576 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 1577 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE; 1578 } 1579 return r_type; 1580 } 1581 1582 static int 1583 tilegx_tls_translate_to_ie (int r_type) 1584 { 1585 switch (r_type) 1586 { 1587 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 1588 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 1589 return R_TILEGX_IMM16_X0_HW0_TLS_IE; 1590 1591 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 1592 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 1593 return R_TILEGX_IMM16_X1_HW0_TLS_IE; 1594 1595 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 1596 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 1597 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE; 1598 1599 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 1600 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 1601 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE; 1602 1603 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 1604 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 1605 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE; 1606 1607 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 1608 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 1609 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE; 1610 } 1611 return r_type; 1612 } 1613 1614 static int 1615 tilegx_elf_tls_transition (struct bfd_link_info *info, int r_type, 1616 int is_local, bfd_boolean disable_le_transition) 1617 { 1618 if (!bfd_link_executable (info)) 1619 return r_type; 1620 1621 if (is_local && !disable_le_transition) 1622 return tilegx_tls_translate_to_le (r_type); 1623 else 1624 return tilegx_tls_translate_to_ie (r_type); 1625 } 1626 1627 /* Look through the relocs for a section during the first phase, and 1628 allocate space in the global offset table or procedure linkage 1629 table. */ 1630 1631 bfd_boolean 1632 tilegx_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, 1633 asection *sec, const Elf_Internal_Rela *relocs) 1634 { 1635 struct tilegx_elf_link_hash_table *htab; 1636 Elf_Internal_Shdr *symtab_hdr; 1637 struct elf_link_hash_entry **sym_hashes; 1638 const Elf_Internal_Rela *rel; 1639 const Elf_Internal_Rela *rel_end; 1640 asection *sreloc; 1641 int num_relocs; 1642 bfd_boolean has_tls_gd_or_ie = FALSE, has_tls_add = FALSE; 1643 1644 if (bfd_link_relocatable (info)) 1645 return TRUE; 1646 1647 htab = tilegx_elf_hash_table (info); 1648 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 1649 sym_hashes = elf_sym_hashes (abfd); 1650 1651 sreloc = NULL; 1652 1653 num_relocs = sec->reloc_count; 1654 1655 BFD_ASSERT (is_tilegx_elf (abfd) || num_relocs == 0); 1656 1657 if (htab->elf.dynobj == NULL) 1658 htab->elf.dynobj = abfd; 1659 1660 rel_end = relocs + num_relocs; 1661 1662 /* Check whether to do optimization to transform TLS GD/IE 1663 referehces to TLS LE. We disable it if we're linking with old 1664 TLS code sequences that do not support such optimization. Old 1665 TLS code sequences have tls_gd_call/tls_ie_load relocations but 1666 no tls_add relocations. */ 1667 for (rel = relocs; rel < rel_end && !has_tls_add; rel++) 1668 { 1669 int r_type = TILEGX_ELF_R_TYPE (rel->r_info); 1670 switch (r_type) 1671 { 1672 case R_TILEGX_TLS_GD_CALL: 1673 case R_TILEGX_TLS_IE_LOAD: 1674 has_tls_gd_or_ie = TRUE; 1675 break; 1676 case R_TILEGX_IMM8_X0_TLS_ADD: 1677 case R_TILEGX_IMM8_Y0_TLS_ADD: 1678 case R_TILEGX_IMM8_X1_TLS_ADD: 1679 case R_TILEGX_IMM8_Y1_TLS_ADD: 1680 has_tls_add = TRUE; 1681 break; 1682 } 1683 } 1684 1685 sec->sec_flg0 = (has_tls_gd_or_ie && !has_tls_add); 1686 htab->disable_le_transition |= sec->sec_flg0; 1687 1688 for (rel = relocs; rel < rel_end; rel++) 1689 { 1690 unsigned int r_type; 1691 unsigned int r_symndx; 1692 struct elf_link_hash_entry *h; 1693 int tls_type; 1694 1695 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info); 1696 r_type = TILEGX_ELF_R_TYPE (rel->r_info); 1697 1698 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) 1699 { 1700 /* xgettext:c-format */ 1701 _bfd_error_handler (_("%pB: bad symbol index: %d"), 1702 abfd, r_symndx); 1703 return FALSE; 1704 } 1705 1706 if (r_symndx < symtab_hdr->sh_info) 1707 h = NULL; 1708 else 1709 { 1710 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 1711 while (h->root.type == bfd_link_hash_indirect 1712 || h->root.type == bfd_link_hash_warning) 1713 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1714 } 1715 1716 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL, 1717 sec->sec_flg0); 1718 switch (r_type) 1719 { 1720 case R_TILEGX_IMM16_X0_HW0_TLS_LE: 1721 case R_TILEGX_IMM16_X1_HW0_TLS_LE: 1722 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE: 1723 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE: 1724 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE: 1725 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE: 1726 if (!bfd_link_executable (info)) 1727 goto r_tilegx_plt32; 1728 break; 1729 1730 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 1731 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 1732 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 1733 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 1734 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 1735 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 1736 BFD_ASSERT (bfd_link_pic (info)); 1737 tls_type = GOT_TLS_GD; 1738 goto have_got_reference; 1739 1740 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 1741 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 1742 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 1743 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 1744 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 1745 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 1746 tls_type = GOT_TLS_IE; 1747 if (!bfd_link_executable (info)) 1748 info->flags |= DF_STATIC_TLS; 1749 goto have_got_reference; 1750 1751 case R_TILEGX_IMM16_X0_HW0_GOT: 1752 case R_TILEGX_IMM16_X1_HW0_GOT: 1753 case R_TILEGX_IMM16_X0_HW0_LAST_GOT: 1754 case R_TILEGX_IMM16_X1_HW0_LAST_GOT: 1755 case R_TILEGX_IMM16_X0_HW1_LAST_GOT: 1756 case R_TILEGX_IMM16_X1_HW1_LAST_GOT: 1757 tls_type = GOT_NORMAL; 1758 /* Fall Through */ 1759 1760 have_got_reference: 1761 /* This symbol requires a global offset table entry. */ 1762 { 1763 int old_tls_type; 1764 1765 if (h != NULL) 1766 { 1767 h->got.refcount += 1; 1768 old_tls_type = tilegx_elf_hash_entry(h)->tls_type; 1769 } 1770 else 1771 { 1772 bfd_signed_vma *local_got_refcounts; 1773 1774 /* This is a global offset table entry for a local symbol. */ 1775 local_got_refcounts = elf_local_got_refcounts (abfd); 1776 if (local_got_refcounts == NULL) 1777 { 1778 bfd_size_type size; 1779 1780 size = symtab_hdr->sh_info; 1781 size *= (sizeof (bfd_signed_vma) + sizeof(char)); 1782 local_got_refcounts = ((bfd_signed_vma *) 1783 bfd_zalloc (abfd, size)); 1784 if (local_got_refcounts == NULL) 1785 return FALSE; 1786 elf_local_got_refcounts (abfd) = local_got_refcounts; 1787 _bfd_tilegx_elf_local_got_tls_type (abfd) 1788 = (char *) (local_got_refcounts + symtab_hdr->sh_info); 1789 } 1790 local_got_refcounts[r_symndx] += 1; 1791 old_tls_type = _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx]; 1792 } 1793 1794 /* If a TLS symbol is accessed using IE at least once, 1795 there is no point to use dynamic model for it. */ 1796 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN 1797 && (old_tls_type != GOT_TLS_GD 1798 || tls_type != GOT_TLS_IE)) 1799 { 1800 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD) 1801 tls_type = old_tls_type; 1802 else 1803 { 1804 _bfd_error_handler 1805 /* xgettext:c-format */ 1806 (_("%pB: `%s' accessed both as normal and thread local symbol"), 1807 abfd, h ? h->root.root.string : "<local>"); 1808 return FALSE; 1809 } 1810 } 1811 1812 if (old_tls_type != tls_type) 1813 { 1814 if (h != NULL) 1815 tilegx_elf_hash_entry (h)->tls_type = tls_type; 1816 else 1817 _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx] = tls_type; 1818 } 1819 } 1820 1821 if (htab->elf.sgot == NULL) 1822 { 1823 if (!tilegx_elf_create_got_section (htab->elf.dynobj, info)) 1824 return FALSE; 1825 } 1826 break; 1827 1828 case R_TILEGX_TLS_GD_CALL: 1829 if (!bfd_link_executable (info)) 1830 { 1831 /* These are basically R_TILEGX_JUMPOFF_X1_PLT relocs 1832 against __tls_get_addr. */ 1833 struct bfd_link_hash_entry *bh = NULL; 1834 if (! _bfd_generic_link_add_one_symbol (info, abfd, 1835 "__tls_get_addr", 0, 1836 bfd_und_section_ptr, 0, 1837 NULL, FALSE, FALSE, 1838 &bh)) 1839 return FALSE; 1840 h = (struct elf_link_hash_entry *) bh; 1841 } 1842 else 1843 break; 1844 /* Fall through */ 1845 1846 case R_TILEGX_JUMPOFF_X1_PLT: 1847 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL: 1848 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL: 1849 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL: 1850 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL: 1851 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL: 1852 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL: 1853 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL: 1854 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL: 1855 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL: 1856 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL: 1857 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL: 1858 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL: 1859 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL: 1860 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL: 1861 /* This symbol requires a procedure linkage table entry. We 1862 actually build the entry in adjust_dynamic_symbol, 1863 because this might be a case of linking PIC code without 1864 linking in any dynamic objects, in which case we don't 1865 need to generate a procedure linkage table after all. */ 1866 1867 if (h != NULL) 1868 { 1869 h->needs_plt = 1; 1870 h->plt.refcount += 1; 1871 } 1872 break; 1873 1874 case R_TILEGX_64_PCREL: 1875 case R_TILEGX_32_PCREL: 1876 case R_TILEGX_16_PCREL: 1877 case R_TILEGX_8_PCREL: 1878 case R_TILEGX_IMM16_X0_HW0_PCREL: 1879 case R_TILEGX_IMM16_X1_HW0_PCREL: 1880 case R_TILEGX_IMM16_X0_HW1_PCREL: 1881 case R_TILEGX_IMM16_X1_HW1_PCREL: 1882 case R_TILEGX_IMM16_X0_HW2_PCREL: 1883 case R_TILEGX_IMM16_X1_HW2_PCREL: 1884 case R_TILEGX_IMM16_X0_HW3_PCREL: 1885 case R_TILEGX_IMM16_X1_HW3_PCREL: 1886 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL: 1887 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL: 1888 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL: 1889 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL: 1890 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL: 1891 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL: 1892 if (h != NULL) 1893 h->non_got_ref = 1; 1894 1895 if (h != NULL 1896 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 1897 break; 1898 /* Fall through. */ 1899 1900 case R_TILEGX_64: 1901 case R_TILEGX_32: 1902 case R_TILEGX_16: 1903 case R_TILEGX_8: 1904 case R_TILEGX_HW0: 1905 case R_TILEGX_HW1: 1906 case R_TILEGX_HW2: 1907 case R_TILEGX_HW3: 1908 case R_TILEGX_HW0_LAST: 1909 case R_TILEGX_HW1_LAST: 1910 case R_TILEGX_HW2_LAST: 1911 case R_TILEGX_COPY: 1912 case R_TILEGX_GLOB_DAT: 1913 case R_TILEGX_JMP_SLOT: 1914 case R_TILEGX_RELATIVE: 1915 case R_TILEGX_BROFF_X1: 1916 case R_TILEGX_JUMPOFF_X1: 1917 case R_TILEGX_IMM8_X0: 1918 case R_TILEGX_IMM8_Y0: 1919 case R_TILEGX_IMM8_X1: 1920 case R_TILEGX_IMM8_Y1: 1921 case R_TILEGX_DEST_IMM8_X1: 1922 case R_TILEGX_MT_IMM14_X1: 1923 case R_TILEGX_MF_IMM14_X1: 1924 case R_TILEGX_MMSTART_X0: 1925 case R_TILEGX_MMEND_X0: 1926 case R_TILEGX_SHAMT_X0: 1927 case R_TILEGX_SHAMT_X1: 1928 case R_TILEGX_SHAMT_Y0: 1929 case R_TILEGX_SHAMT_Y1: 1930 case R_TILEGX_IMM16_X0_HW0: 1931 case R_TILEGX_IMM16_X1_HW0: 1932 case R_TILEGX_IMM16_X0_HW1: 1933 case R_TILEGX_IMM16_X1_HW1: 1934 case R_TILEGX_IMM16_X0_HW2: 1935 case R_TILEGX_IMM16_X1_HW2: 1936 case R_TILEGX_IMM16_X0_HW3: 1937 case R_TILEGX_IMM16_X1_HW3: 1938 case R_TILEGX_IMM16_X0_HW0_LAST: 1939 case R_TILEGX_IMM16_X1_HW0_LAST: 1940 case R_TILEGX_IMM16_X0_HW1_LAST: 1941 case R_TILEGX_IMM16_X1_HW1_LAST: 1942 case R_TILEGX_IMM16_X0_HW2_LAST: 1943 case R_TILEGX_IMM16_X1_HW2_LAST: 1944 if (h != NULL) 1945 h->non_got_ref = 1; 1946 1947 r_tilegx_plt32: 1948 if (h != NULL && !bfd_link_pic (info)) 1949 { 1950 /* We may need a .plt entry if the function this reloc 1951 refers to is in a shared lib. */ 1952 h->plt.refcount += 1; 1953 } 1954 1955 /* If we are creating a shared library, and this is a reloc 1956 against a global symbol, or a non PC relative reloc 1957 against a local symbol, then we need to copy the reloc 1958 into the shared library. However, if we are linking with 1959 -Bsymbolic, we do not need to copy a reloc against a 1960 global symbol which is defined in an object we are 1961 including in the link (i.e., DEF_REGULAR is set). At 1962 this point we have not seen all the input files, so it is 1963 possible that DEF_REGULAR is not set now but will be set 1964 later (it is never cleared). In case of a weak definition, 1965 DEF_REGULAR may be cleared later by a strong definition in 1966 a shared library. We account for that possibility below by 1967 storing information in the relocs_copied field of the hash 1968 table entry. A similar situation occurs when creating 1969 shared libraries and symbol visibility changes render the 1970 symbol local. 1971 1972 If on the other hand, we are creating an executable, we 1973 may need to keep relocations for symbols satisfied by a 1974 dynamic library if we manage to avoid copy relocs for the 1975 symbol. */ 1976 if ((bfd_link_pic (info) 1977 && (sec->flags & SEC_ALLOC) != 0 1978 && (! tilegx_elf_howto_table[r_type].pc_relative 1979 || (h != NULL 1980 && (! info->symbolic 1981 || h->root.type == bfd_link_hash_defweak 1982 || !h->def_regular)))) 1983 || (!bfd_link_pic (info) 1984 && (sec->flags & SEC_ALLOC) != 0 1985 && h != NULL 1986 && (h->root.type == bfd_link_hash_defweak 1987 || !h->def_regular))) 1988 { 1989 struct elf_dyn_relocs *p; 1990 struct elf_dyn_relocs **head; 1991 1992 /* When creating a shared object, we must copy these 1993 relocs into the output file. We create a reloc 1994 section in dynobj and make room for the reloc. */ 1995 if (sreloc == NULL) 1996 { 1997 sreloc = _bfd_elf_make_dynamic_reloc_section 1998 (sec, htab->elf.dynobj, htab->word_align_power, abfd, 1999 /*rela?*/ TRUE); 2000 2001 if (sreloc == NULL) 2002 return FALSE; 2003 } 2004 2005 /* If this is a global symbol, we count the number of 2006 relocations we need for this symbol. */ 2007 if (h != NULL) 2008 head = 2009 &((struct tilegx_elf_link_hash_entry *) h)->dyn_relocs; 2010 else 2011 { 2012 /* Track dynamic relocs needed for local syms too. 2013 We really need local syms available to do this 2014 easily. Oh well. */ 2015 2016 asection *s; 2017 void *vpp; 2018 Elf_Internal_Sym *isym; 2019 2020 isym = bfd_sym_from_r_symndx (&htab->sym_cache, 2021 abfd, r_symndx); 2022 if (isym == NULL) 2023 return FALSE; 2024 2025 s = bfd_section_from_elf_index (abfd, isym->st_shndx); 2026 if (s == NULL) 2027 s = sec; 2028 2029 vpp = &elf_section_data (s)->local_dynrel; 2030 head = (struct elf_dyn_relocs **) vpp; 2031 } 2032 2033 p = *head; 2034 if (p == NULL || p->sec != sec) 2035 { 2036 bfd_size_type amt = sizeof *p; 2037 p = ((struct elf_dyn_relocs *) 2038 bfd_alloc (htab->elf.dynobj, amt)); 2039 if (p == NULL) 2040 return FALSE; 2041 p->next = *head; 2042 *head = p; 2043 p->sec = sec; 2044 p->count = 0; 2045 p->pc_count = 0; 2046 } 2047 2048 p->count += 1; 2049 if (tilegx_elf_howto_table[r_type].pc_relative) 2050 p->pc_count += 1; 2051 } 2052 2053 break; 2054 2055 case R_TILEGX_GNU_VTINHERIT: 2056 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 2057 return FALSE; 2058 break; 2059 2060 case R_TILEGX_GNU_VTENTRY: 2061 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 2062 return FALSE; 2063 break; 2064 2065 default: 2066 break; 2067 } 2068 } 2069 2070 return TRUE; 2071 } 2072 2073 2074 asection * 2076 tilegx_elf_gc_mark_hook (asection *sec, 2077 struct bfd_link_info *info, 2078 Elf_Internal_Rela *rel, 2079 struct elf_link_hash_entry *h, 2080 Elf_Internal_Sym *sym) 2081 { 2082 if (h != NULL) 2083 { 2084 switch (TILEGX_ELF_R_TYPE (rel->r_info)) 2085 { 2086 case R_TILEGX_GNU_VTINHERIT: 2087 case R_TILEGX_GNU_VTENTRY: 2088 return NULL; 2089 } 2090 } 2091 2092 /* FIXME: The test here, in check_relocs and in relocate_section 2093 dealing with TLS optimization, ought to be !bfd_link_executable (info). */ 2094 if (bfd_link_pic (info)) 2095 { 2096 struct bfd_link_hash_entry *bh; 2097 2098 switch (TILEGX_ELF_R_TYPE (rel->r_info)) 2099 { 2100 case R_TILEGX_TLS_GD_CALL: 2101 /* This reloc implicitly references __tls_get_addr. We know 2102 another reloc will reference the same symbol as the one 2103 on this reloc, so the real symbol and section will be 2104 gc marked when processing the other reloc. That lets 2105 us handle __tls_get_addr here. */ 2106 bh = NULL; 2107 if (! _bfd_generic_link_add_one_symbol (info, sec->owner, 2108 "__tls_get_addr", 0, 2109 bfd_und_section_ptr, 2110 0, NULL, FALSE, 2111 FALSE, &bh)) 2112 return NULL; 2113 h = (struct elf_link_hash_entry *) bh; 2114 BFD_ASSERT (h != NULL); 2115 h->mark = 1; 2116 if (h->is_weakalias) 2117 weakdef (h)->mark = 1; 2118 sym = NULL; 2119 } 2120 } 2121 2122 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 2123 } 2124 2125 /* Find dynamic relocs for H that apply to read-only sections. */ 2126 2127 static asection * 2128 readonly_dynrelocs (struct elf_link_hash_entry *h) 2129 { 2130 struct elf_dyn_relocs *p; 2131 2132 for (p = tilegx_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) 2133 { 2134 asection *s = p->sec->output_section; 2135 2136 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2137 return p->sec; 2138 } 2139 return NULL; 2140 } 2141 2142 /* Adjust a symbol defined by a dynamic object and referenced by a 2143 regular object. The current definition is in some section of the 2144 dynamic object, but we're not including those sections. We have to 2145 change the definition to something the rest of the link can 2146 understand. */ 2147 2148 bfd_boolean 2149 tilegx_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 2150 struct elf_link_hash_entry *h) 2151 { 2152 struct tilegx_elf_link_hash_table *htab; 2153 bfd *dynobj; 2154 asection *s, *srel; 2155 2156 htab = tilegx_elf_hash_table (info); 2157 BFD_ASSERT (htab != NULL); 2158 2159 dynobj = htab->elf.dynobj; 2160 2161 /* Make sure we know what is going on here. */ 2162 BFD_ASSERT (dynobj != NULL 2163 && (h->needs_plt 2164 || h->is_weakalias 2165 || (h->def_dynamic 2166 && h->ref_regular 2167 && !h->def_regular))); 2168 2169 /* If this is a function, put it in the procedure linkage table. We 2170 will fill in the contents of the procedure linkage table later 2171 (although we could actually do it here). */ 2172 if (h->type == STT_FUNC || h->needs_plt) 2173 { 2174 if (h->plt.refcount <= 0 2175 || SYMBOL_CALLS_LOCAL (info, h) 2176 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT 2177 && h->root.type == bfd_link_hash_undefweak)) 2178 { 2179 /* This case can occur if we saw a R_TILEGX_JUMPOFF_X1_PLT 2180 reloc in an input file, but the symbol was never referred 2181 to by a dynamic object, or if all references were garbage 2182 collected. In such a case, we don't actually need to build 2183 a procedure linkage table, and we can just do a 2184 R_TILEGX_JUMPOFF_X1 relocation instead. */ 2185 h->plt.offset = (bfd_vma) -1; 2186 h->needs_plt = 0; 2187 } 2188 2189 return TRUE; 2190 } 2191 else 2192 h->plt.offset = (bfd_vma) -1; 2193 2194 /* If this is a weak symbol, and there is a real definition, the 2195 processor independent code will have arranged for us to see the 2196 real definition first, and we can just use the same value. */ 2197 if (h->is_weakalias) 2198 { 2199 struct elf_link_hash_entry *def = weakdef (h); 2200 BFD_ASSERT (def->root.type == bfd_link_hash_defined); 2201 h->root.u.def.section = def->root.u.def.section; 2202 h->root.u.def.value = def->root.u.def.value; 2203 return TRUE; 2204 } 2205 2206 /* This is a reference to a symbol defined by a dynamic object which 2207 is not a function. */ 2208 2209 /* If we are creating a shared library, we must presume that the 2210 only references to the symbol are via the global offset table. 2211 For such cases we need not do anything here; the relocations will 2212 be handled correctly by relocate_section. */ 2213 if (bfd_link_pic (info)) 2214 return TRUE; 2215 2216 /* If there are no references to this symbol that do not use the 2217 GOT, we don't need to generate a copy reloc. */ 2218 if (!h->non_got_ref) 2219 return TRUE; 2220 2221 /* If -z nocopyreloc was given, we won't generate them either. */ 2222 if (info->nocopyreloc) 2223 { 2224 h->non_got_ref = 0; 2225 return TRUE; 2226 } 2227 2228 /* If we don't find any dynamic relocs in read-only sections, then 2229 we'll be keeping the dynamic relocs and avoiding the copy reloc. */ 2230 if (!readonly_dynrelocs (h)) 2231 { 2232 h->non_got_ref = 0; 2233 return TRUE; 2234 } 2235 2236 /* We must allocate the symbol in our .dynbss section, which will 2237 become part of the .bss section of the executable. There will be 2238 an entry for this symbol in the .dynsym section. The dynamic 2239 object will contain position independent code, so all references 2240 from the dynamic object to this symbol will go through the global 2241 offset table. The dynamic linker will use the .dynsym entry to 2242 determine the address it must put in the global offset table, so 2243 both the dynamic object and the regular object will refer to the 2244 same memory location for the variable. */ 2245 2246 /* We must generate a R_TILEGX_COPY reloc to tell the dynamic linker 2247 to copy the initial value out of the dynamic object and into the 2248 runtime process image. We need to remember the offset into the 2249 .rel.bss section we are going to use. */ 2250 if ((h->root.u.def.section->flags & SEC_READONLY) != 0) 2251 { 2252 s = htab->elf.sdynrelro; 2253 srel = htab->elf.sreldynrelro; 2254 } 2255 else 2256 { 2257 s = htab->elf.sdynbss; 2258 srel = htab->elf.srelbss; 2259 } 2260 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) 2261 { 2262 srel->size += TILEGX_ELF_RELA_BYTES (htab); 2263 h->needs_copy = 1; 2264 } 2265 2266 return _bfd_elf_adjust_dynamic_copy (info, h, s); 2267 } 2268 2269 /* Allocate space in .plt, .got and associated reloc sections for 2270 dynamic relocs. */ 2271 2272 static bfd_boolean 2273 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) 2274 { 2275 struct bfd_link_info *info; 2276 struct tilegx_elf_link_hash_table *htab; 2277 struct tilegx_elf_link_hash_entry *eh; 2278 struct elf_dyn_relocs *p; 2279 2280 if (h->root.type == bfd_link_hash_indirect) 2281 return TRUE; 2282 2283 info = (struct bfd_link_info *) inf; 2284 htab = tilegx_elf_hash_table (info); 2285 BFD_ASSERT (htab != NULL); 2286 2287 if (htab->elf.dynamic_sections_created 2288 && h->plt.refcount > 0) 2289 { 2290 /* Make sure this symbol is output as a dynamic symbol. 2291 Undefined weak syms won't yet be marked as dynamic. */ 2292 if (h->dynindx == -1 2293 && !h->forced_local) 2294 { 2295 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2296 return FALSE; 2297 } 2298 2299 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) 2300 { 2301 asection *s = htab->elf.splt; 2302 2303 /* Allocate room for the header and tail. */ 2304 if (s->size == 0) 2305 { 2306 s->size = PLT_ENTRY_SIZE; 2307 } 2308 2309 h->plt.offset = s->size - PLT_ENTRY_SIZE + PLT_HEADER_SIZE; 2310 2311 /* If this symbol is not defined in a regular file, and we are 2312 not generating a shared library, then set the symbol to this 2313 location in the .plt. This is required to make function 2314 pointers compare as equal between the normal executable and 2315 the shared library. */ 2316 if (! bfd_link_pic (info) 2317 && !h->def_regular) 2318 { 2319 h->root.u.def.section = s; 2320 h->root.u.def.value = h->plt.offset; 2321 } 2322 2323 /* Make room for this entry. */ 2324 s->size += PLT_ENTRY_SIZE; 2325 2326 /* We also need to make an entry in the .got.plt section. */ 2327 htab->elf.sgotplt->size += GOT_ENTRY_SIZE (htab); 2328 2329 /* We also need to make an entry in the .rela.plt section. */ 2330 htab->elf.srelplt->size += TILEGX_ELF_RELA_BYTES (htab); 2331 } 2332 else 2333 { 2334 h->plt.offset = (bfd_vma) -1; 2335 h->needs_plt = 0; 2336 } 2337 } 2338 else 2339 { 2340 h->plt.offset = (bfd_vma) -1; 2341 h->needs_plt = 0; 2342 } 2343 2344 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE 2345 requiring no TLS entry. */ 2346 if (h->got.refcount > 0 2347 && !htab->disable_le_transition 2348 && bfd_link_executable (info) 2349 && h->dynindx == -1 2350 && tilegx_elf_hash_entry(h)->tls_type == GOT_TLS_IE) 2351 h->got.offset = (bfd_vma) -1; 2352 else if (h->got.refcount > 0) 2353 { 2354 asection *s; 2355 bfd_boolean dyn; 2356 int tls_type = tilegx_elf_hash_entry(h)->tls_type; 2357 2358 /* Make sure this symbol is output as a dynamic symbol. 2359 Undefined weak syms won't yet be marked as dynamic. */ 2360 if (h->dynindx == -1 2361 && !h->forced_local) 2362 { 2363 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2364 return FALSE; 2365 } 2366 2367 s = htab->elf.sgot; 2368 h->got.offset = s->size; 2369 s->size += TILEGX_ELF_WORD_BYTES (htab); 2370 /* TLS_GD entries need 2 consecutive GOT slots. */ 2371 if (tls_type == GOT_TLS_GD) 2372 s->size += TILEGX_ELF_WORD_BYTES (htab); 2373 dyn = htab->elf.dynamic_sections_created; 2374 /* TLS_IE needs one dynamic relocation, 2375 TLS_GD needs two if local symbol and two if global. */ 2376 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE) 2377 htab->elf.srelgot->size += 2 * TILEGX_ELF_RELA_BYTES (htab); 2378 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2379 bfd_link_pic (info), 2380 h)) 2381 htab->elf.srelgot->size += TILEGX_ELF_RELA_BYTES (htab); 2382 } 2383 else 2384 h->got.offset = (bfd_vma) -1; 2385 2386 eh = (struct tilegx_elf_link_hash_entry *) h; 2387 if (eh->dyn_relocs == NULL) 2388 return TRUE; 2389 2390 /* In the shared -Bsymbolic case, discard space allocated for 2391 dynamic pc-relative relocs against symbols which turn out to be 2392 defined in regular objects. For the normal shared case, discard 2393 space for pc-relative relocs that have become local due to symbol 2394 visibility changes. */ 2395 2396 if (bfd_link_pic (info)) 2397 { 2398 if (SYMBOL_CALLS_LOCAL (info, h)) 2399 { 2400 struct elf_dyn_relocs **pp; 2401 2402 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) 2403 { 2404 p->count -= p->pc_count; 2405 p->pc_count = 0; 2406 if (p->count == 0) 2407 *pp = p->next; 2408 else 2409 pp = &p->next; 2410 } 2411 } 2412 2413 /* Also discard relocs on undefined weak syms with non-default 2414 visibility. */ 2415 if (eh->dyn_relocs != NULL 2416 && h->root.type == bfd_link_hash_undefweak) 2417 { 2418 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT 2419 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) 2420 eh->dyn_relocs = NULL; 2421 2422 /* Make sure undefined weak symbols are output as a dynamic 2423 symbol in PIEs. */ 2424 else if (h->dynindx == -1 2425 && !h->forced_local) 2426 { 2427 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2428 return FALSE; 2429 } 2430 } 2431 } 2432 else 2433 { 2434 /* For the non-shared case, discard space for relocs against 2435 symbols which turn out to need copy relocs or are not 2436 dynamic. */ 2437 2438 if (!h->non_got_ref 2439 && ((h->def_dynamic 2440 && !h->def_regular) 2441 || (htab->elf.dynamic_sections_created 2442 && (h->root.type == bfd_link_hash_undefweak 2443 || h->root.type == bfd_link_hash_undefined)))) 2444 { 2445 /* Make sure this symbol is output as a dynamic symbol. 2446 Undefined weak syms won't yet be marked as dynamic. */ 2447 if (h->dynindx == -1 2448 && !h->forced_local) 2449 { 2450 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2451 return FALSE; 2452 } 2453 2454 /* If that succeeded, we know we'll be keeping all the 2455 relocs. */ 2456 if (h->dynindx != -1) 2457 goto keep; 2458 } 2459 2460 eh->dyn_relocs = NULL; 2461 2462 keep: ; 2463 } 2464 2465 /* Finally, allocate space. */ 2466 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2467 { 2468 asection *sreloc = elf_section_data (p->sec)->sreloc; 2469 sreloc->size += p->count * TILEGX_ELF_RELA_BYTES (htab); 2470 } 2471 2472 return TRUE; 2473 } 2474 2475 /* Set DF_TEXTREL if we find any dynamic relocs that apply to 2476 read-only sections. */ 2477 2478 static bfd_boolean 2479 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) 2480 { 2481 asection *sec; 2482 2483 if (h->root.type == bfd_link_hash_indirect) 2484 return TRUE; 2485 2486 sec = readonly_dynrelocs (h); 2487 if (sec != NULL) 2488 { 2489 struct bfd_link_info *info = (struct bfd_link_info *) info_p; 2490 2491 info->flags |= DF_TEXTREL; 2492 info->callbacks->minfo 2493 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), 2494 sec->owner, h->root.root.string, sec); 2495 2496 /* Not an error, just cut short the traversal. */ 2497 return FALSE; 2498 } 2499 return TRUE; 2500 } 2501 2502 /* Return true if the dynamic symbol for a given section should be 2503 omitted when creating a shared library. */ 2504 2505 bfd_boolean 2506 tilegx_elf_omit_section_dynsym (bfd *output_bfd, 2507 struct bfd_link_info *info, 2508 asection *p) 2509 { 2510 /* We keep the .got section symbol so that explicit relocations 2511 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode 2512 can be turned into relocations against the .got symbol. */ 2513 if (strcmp (p->name, ".got") == 0) 2514 return FALSE; 2515 2516 return _bfd_elf_omit_section_dynsym_default (output_bfd, info, p); 2517 } 2518 2519 bfd_boolean 2520 tilegx_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 2521 struct bfd_link_info *info) 2522 { 2523 struct tilegx_elf_link_hash_table *htab; 2524 bfd *dynobj; 2525 asection *s; 2526 bfd *ibfd; 2527 2528 htab = tilegx_elf_hash_table (info); 2529 BFD_ASSERT (htab != NULL); 2530 dynobj = htab->elf.dynobj; 2531 BFD_ASSERT (dynobj != NULL); 2532 2533 if (elf_hash_table (info)->dynamic_sections_created) 2534 { 2535 /* Set the contents of the .interp section to the interpreter. */ 2536 if (bfd_link_executable (info) && !info->nointerp) 2537 { 2538 s = bfd_get_linker_section (dynobj, ".interp"); 2539 BFD_ASSERT (s != NULL); 2540 s->size = strlen (htab->dynamic_interpreter) + 1; 2541 s->contents = (unsigned char *) htab->dynamic_interpreter; 2542 } 2543 } 2544 2545 /* Set up .got offsets for local syms, and space for local dynamic 2546 relocs. */ 2547 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) 2548 { 2549 bfd_signed_vma *local_got; 2550 bfd_signed_vma *end_local_got; 2551 char *local_tls_type; 2552 bfd_size_type locsymcount; 2553 Elf_Internal_Shdr *symtab_hdr; 2554 asection *srel; 2555 2556 if (! is_tilegx_elf (ibfd)) 2557 continue; 2558 2559 for (s = ibfd->sections; s != NULL; s = s->next) 2560 { 2561 struct elf_dyn_relocs *p; 2562 2563 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) 2564 { 2565 if (!bfd_is_abs_section (p->sec) 2566 && bfd_is_abs_section (p->sec->output_section)) 2567 { 2568 /* Input section has been discarded, either because 2569 it is a copy of a linkonce section or due to 2570 linker script /DISCARD/, so we'll be discarding 2571 the relocs too. */ 2572 } 2573 else if (p->count != 0) 2574 { 2575 srel = elf_section_data (p->sec)->sreloc; 2576 srel->size += p->count * TILEGX_ELF_RELA_BYTES (htab); 2577 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 2578 { 2579 info->flags |= DF_TEXTREL; 2580 2581 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"), 2582 p->sec->owner, p->sec); 2583 } 2584 } 2585 } 2586 } 2587 2588 local_got = elf_local_got_refcounts (ibfd); 2589 if (!local_got) 2590 continue; 2591 2592 symtab_hdr = &elf_symtab_hdr (ibfd); 2593 locsymcount = symtab_hdr->sh_info; 2594 end_local_got = local_got + locsymcount; 2595 local_tls_type = _bfd_tilegx_elf_local_got_tls_type (ibfd); 2596 s = htab->elf.sgot; 2597 srel = htab->elf.srelgot; 2598 for (; local_got < end_local_got; ++local_got, ++local_tls_type) 2599 { 2600 if (*local_got > 0) 2601 { 2602 *local_got = s->size; 2603 s->size += TILEGX_ELF_WORD_BYTES (htab); 2604 if (*local_tls_type == GOT_TLS_GD) 2605 s->size += TILEGX_ELF_WORD_BYTES (htab); 2606 if (bfd_link_pic (info) 2607 || *local_tls_type == GOT_TLS_GD 2608 || *local_tls_type == GOT_TLS_IE) 2609 srel->size += TILEGX_ELF_RELA_BYTES (htab); 2610 } 2611 else 2612 *local_got = (bfd_vma) -1; 2613 } 2614 } 2615 2616 /* Allocate global sym .plt and .got entries, and space for global 2617 sym dynamic relocs. */ 2618 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); 2619 2620 if (elf_hash_table (info)->dynamic_sections_created) 2621 { 2622 /* If the .got section is more than 0x8000 bytes, we add 2623 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16 2624 bit relocations have a greater chance of working. */ 2625 if (htab->elf.sgot->size >= 0x8000 2626 && elf_hash_table (info)->hgot->root.u.def.value == 0) 2627 elf_hash_table (info)->hgot->root.u.def.value = 0x8000; 2628 } 2629 2630 if (htab->elf.sgotplt) 2631 { 2632 struct elf_link_hash_entry *got; 2633 got = elf_link_hash_lookup (elf_hash_table (info), 2634 "_GLOBAL_OFFSET_TABLE_", 2635 FALSE, FALSE, FALSE); 2636 2637 /* Don't allocate .got.plt section if there are no GOT nor PLT 2638 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */ 2639 if ((got == NULL 2640 || !got->ref_regular_nonweak) 2641 && (htab->elf.sgotplt->size 2642 == (unsigned)GOTPLT_HEADER_SIZE (htab)) 2643 && (htab->elf.splt == NULL 2644 || htab->elf.splt->size == 0) 2645 && (htab->elf.sgot == NULL 2646 || (htab->elf.sgot->size 2647 == get_elf_backend_data (output_bfd)->got_header_size))) 2648 htab->elf.sgotplt->size = 0; 2649 } 2650 2651 /* The check_relocs and adjust_dynamic_symbol entry points have 2652 determined the sizes of the various dynamic sections. Allocate 2653 memory for them. */ 2654 for (s = dynobj->sections; s != NULL; s = s->next) 2655 { 2656 if ((s->flags & SEC_LINKER_CREATED) == 0) 2657 continue; 2658 2659 if (s == htab->elf.splt 2660 || s == htab->elf.sgot 2661 || s == htab->elf.sgotplt 2662 || s == htab->elf.sdynbss 2663 || s == htab->elf.sdynrelro) 2664 { 2665 /* Strip this section if we don't need it; see the 2666 comment below. */ 2667 } 2668 else if (strncmp (s->name, ".rela", 5) == 0) 2669 { 2670 if (s->size != 0) 2671 { 2672 /* We use the reloc_count field as a counter if we need 2673 to copy relocs into the output file. */ 2674 s->reloc_count = 0; 2675 } 2676 } 2677 else 2678 { 2679 /* It's not one of our sections. */ 2680 continue; 2681 } 2682 2683 if (s->size == 0) 2684 { 2685 /* If we don't need this section, strip it from the 2686 output file. This is mostly to handle .rela.bss and 2687 .rela.plt. We must create both sections in 2688 create_dynamic_sections, because they must be created 2689 before the linker maps input sections to output 2690 sections. The linker does that before 2691 adjust_dynamic_symbol is called, and it is that 2692 function which decides whether anything needs to go 2693 into these sections. */ 2694 s->flags |= SEC_EXCLUDE; 2695 continue; 2696 } 2697 2698 if ((s->flags & SEC_HAS_CONTENTS) == 0) 2699 continue; 2700 2701 /* Allocate memory for the section contents. Zero the memory 2702 for the benefit of .rela.plt, which has 4 unused entries 2703 at the beginning, and we don't want garbage. */ 2704 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); 2705 if (s->contents == NULL) 2706 return FALSE; 2707 } 2708 2709 if (elf_hash_table (info)->dynamic_sections_created) 2710 { 2711 /* Add some entries to the .dynamic section. We fill in the 2712 values later, in tilegx_elf_finish_dynamic_sections, but we 2713 must add the entries now so that we get the correct size for 2714 the .dynamic section. The DT_DEBUG entry is filled in by the 2715 dynamic linker and used by the debugger. */ 2716 #define add_dynamic_entry(TAG, VAL) \ 2717 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 2718 2719 if (bfd_link_executable (info)) 2720 { 2721 if (!add_dynamic_entry (DT_DEBUG, 0)) 2722 return FALSE; 2723 } 2724 2725 if (htab->elf.srelplt->size != 0) 2726 { 2727 if (!add_dynamic_entry (DT_PLTGOT, 0) 2728 || !add_dynamic_entry (DT_PLTRELSZ, 0) 2729 || !add_dynamic_entry (DT_PLTREL, DT_RELA) 2730 || !add_dynamic_entry (DT_JMPREL, 0)) 2731 return FALSE; 2732 } 2733 2734 if (!add_dynamic_entry (DT_RELA, 0) 2735 || !add_dynamic_entry (DT_RELASZ, 0) 2736 || !add_dynamic_entry (DT_RELAENT, TILEGX_ELF_RELA_BYTES (htab))) 2737 return FALSE; 2738 2739 /* If any dynamic relocs apply to a read-only section, 2740 then we need a DT_TEXTREL entry. */ 2741 if ((info->flags & DF_TEXTREL) == 0) 2742 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); 2743 2744 if (info->flags & DF_TEXTREL) 2745 { 2746 if (!add_dynamic_entry (DT_TEXTREL, 0)) 2747 return FALSE; 2748 } 2749 } 2750 #undef add_dynamic_entry 2751 2752 return TRUE; 2753 } 2754 2755 /* Return the base VMA address which should be subtracted from real addresses 2757 when resolving @dtpoff relocation. 2758 This is PT_TLS segment p_vaddr. */ 2759 2760 static bfd_vma 2761 dtpoff_base (struct bfd_link_info *info) 2762 { 2763 /* If tls_sec is NULL, we should have signalled an error already. */ 2764 if (elf_hash_table (info)->tls_sec == NULL) 2765 return 0; 2766 return elf_hash_table (info)->tls_sec->vma; 2767 } 2768 2769 /* Return the relocation value for @tpoff relocation. */ 2770 2771 static bfd_vma 2772 tpoff (struct bfd_link_info *info, bfd_vma address) 2773 { 2774 struct elf_link_hash_table *htab = elf_hash_table (info); 2775 2776 /* If tls_sec is NULL, we should have signalled an error already. */ 2777 if (htab->tls_sec == NULL) 2778 return 0; 2779 2780 return (address - htab->tls_sec->vma); 2781 } 2782 2783 /* Copy SIZE bits from FROM to TO at address ADDR. */ 2784 2785 static void 2786 tilegx_copy_bits (bfd_byte *addr, int from, int to, int size) 2787 { 2788 int i; 2789 for (i = 0; i < size; i++) 2790 { 2791 int from_byte = (from + i) / 8; 2792 int from_bit = (from + i) % 8; 2793 int to_byte = (to + i) / 8; 2794 int to_bit = (to + i) % 8; 2795 bfd_byte to_mask = 1 << to_bit; 2796 addr[to_byte] = (addr[to_byte] & ~to_mask) 2797 | ((addr[from_byte] >> from_bit << to_bit) & to_mask); 2798 } 2799 } 2800 2801 /* Replace the MASK bits in ADDR with those in INSN, for the next 2802 TILEGX_BUNDLE_SIZE_IN_BYTES bytes. */ 2803 2804 static void 2805 tilegx_replace_insn (bfd_byte *addr, const bfd_byte *mask, 2806 const bfd_byte *insn) 2807 { 2808 int i; 2809 for (i = 0; i < TILEGX_BUNDLE_SIZE_IN_BYTES; i++) 2810 { 2811 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]); 2812 } 2813 } 2814 2815 /* Mask to extract the bits corresponding to an instruction in a 2816 specific pipe of a bundle. */ 2817 static const bfd_byte insn_mask_X1[] = { 2818 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x3f 2819 }; 2820 2821 /* Mask to extract the bits corresponding to an instruction in a 2822 specific pipe of a bundle, minus the destination operand and the 2823 first source operand. */ 2824 static const bfd_byte insn_mask_X0_no_dest_no_srca[] = { 2825 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00 2826 }; 2827 2828 static const bfd_byte insn_mask_X1_no_dest_no_srca[] = { 2829 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x3f 2830 }; 2831 2832 static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = { 2833 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00 2834 }; 2835 static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = { 2836 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x3c 2837 }; 2838 2839 /* Mask to extract the bits corresponding to an instruction in a 2840 specific pipe of a bundle, minus the register operands. */ 2841 static const bfd_byte insn_mask_X0_no_operand[] = { 2842 0x00, 0x00, 0xfc, 0x7f, 0x00, 0x00, 0x00, 0x00 2843 }; 2844 2845 static const bfd_byte insn_mask_X1_no_operand[] = { 2846 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x3f 2847 }; 2848 2849 static const bfd_byte insn_mask_Y0_no_operand[] = { 2850 0x00, 0x00, 0x0c, 0x78, 0x00, 0x00, 0x00, 0x00 2851 }; 2852 2853 static const bfd_byte insn_mask_Y1_no_operand[] = { 2854 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x3c 2855 }; 2856 2857 /* Various instructions synthesized to support tls references. */ 2858 2859 /* ld r0, r0 in the X1 pipe, used for tls ie. */ 2860 static const bfd_byte insn_tls_ie_ld_X1[] = { 2861 0x00, 0x00, 0x00, 0x00, 0x00, 0xe8, 0x6a, 0x28 2862 }; 2863 2864 /* ld4s r0, r0 in the X1 pipe, used for tls ie. */ 2865 static const bfd_byte insn_tls_ie_ld4s_X1[] = { 2866 0x00, 0x00, 0x00, 0x00, 0x00, 0x98, 0x6a, 0x28 2867 }; 2868 2869 /* add r0, r0, tp in various pipes, used for tls ie. */ 2870 static const bfd_byte insn_tls_ie_add_X0X1[] = { 2871 0x00, 0x50, 0x0f, 0x50, 0x00, 0xa8, 0x07, 0x28 2872 }; 2873 static const bfd_byte insn_tls_ie_add_Y0Y1[] = { 2874 0x00, 0x50, 0x27, 0x2c, 0x00, 0xa8, 0x13, 0x9a 2875 }; 2876 2877 /* addx r0, r0, tp in various pipes, used for tls ie. */ 2878 static const bfd_byte insn_tls_ie_addx_X0X1[] = { 2879 0x00, 0x50, 0x0b, 0x50, 0x00, 0xa8, 0x05, 0x28 2880 }; 2881 static const bfd_byte insn_tls_ie_addx_Y0Y1[] = { 2882 0x00, 0x50, 0x03, 0x2c, 0x00, 0xa8, 0x01, 0x9a 2883 }; 2884 2885 /* move r0, r0 in various pipes, used for tls gd. */ 2886 static const bfd_byte insn_tls_gd_add_X0X1[] = { 2887 0x00, 0xf0, 0x07, 0x51, 0x00, 0xf8, 0x3b, 0x28 2888 }; 2889 static const bfd_byte insn_tls_gd_add_Y0Y1[] = { 2890 0x00, 0xf0, 0x0b, 0x54, 0x00, 0xf8, 0x05, 0xae 2891 }; 2892 2893 static const bfd_byte *insn_move_X0X1 = insn_tls_gd_add_X0X1; 2894 static const bfd_byte *insn_move_Y0Y1 = insn_tls_gd_add_Y0Y1; 2895 2896 static const bfd_byte *insn_add_X0X1 = insn_tls_ie_add_X0X1; 2897 static const bfd_byte *insn_add_Y0Y1 = insn_tls_ie_add_Y0Y1; 2898 2899 static const bfd_byte *insn_addx_X0X1 = insn_tls_ie_addx_X0X1; 2900 static const bfd_byte *insn_addx_Y0Y1 = insn_tls_ie_addx_Y0Y1; 2901 2902 /* Relocate an TILEGX ELF section. 2903 2904 The RELOCATE_SECTION function is called by the new ELF backend linker 2905 to handle the relocations for a section. 2906 2907 The relocs are always passed as Rela structures. 2908 2909 This function is responsible for adjusting the section contents as 2910 necessary, and (if generating a relocatable output file) adjusting 2911 the reloc addend as necessary. 2912 2913 This function does not have to worry about setting the reloc 2914 address or the reloc symbol index. 2915 2916 LOCAL_SYMS is a pointer to the swapped in local symbols. 2917 2918 LOCAL_SECTIONS is an array giving the section in the input file 2919 corresponding to the st_shndx field of each local symbol. 2920 2921 The global hash table entry for the global symbols can be found 2922 via elf_sym_hashes (input_bfd). 2923 2924 When generating relocatable output, this function must handle 2925 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 2926 going to be the section symbol corresponding to the output 2927 section, which means that the addend must be adjusted 2928 accordingly. */ 2929 2930 bfd_boolean 2931 tilegx_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, 2932 bfd *input_bfd, asection *input_section, 2933 bfd_byte *contents, Elf_Internal_Rela *relocs, 2934 Elf_Internal_Sym *local_syms, 2935 asection **local_sections) 2936 { 2937 struct tilegx_elf_link_hash_table *htab; 2938 Elf_Internal_Shdr *symtab_hdr; 2939 struct elf_link_hash_entry **sym_hashes; 2940 bfd_vma *local_got_offsets; 2941 bfd_vma got_base; 2942 asection *sreloc; 2943 Elf_Internal_Rela *rel; 2944 Elf_Internal_Rela *relend; 2945 int num_relocs; 2946 2947 htab = tilegx_elf_hash_table (info); 2948 BFD_ASSERT (htab != NULL); 2949 symtab_hdr = &elf_symtab_hdr (input_bfd); 2950 sym_hashes = elf_sym_hashes (input_bfd); 2951 local_got_offsets = elf_local_got_offsets (input_bfd); 2952 2953 if (elf_hash_table (info)->hgot == NULL) 2954 got_base = 0; 2955 else 2956 got_base = elf_hash_table (info)->hgot->root.u.def.value; 2957 2958 sreloc = elf_section_data (input_section)->sreloc; 2959 2960 rel = relocs; 2961 num_relocs = input_section->reloc_count; 2962 relend = relocs + num_relocs; 2963 for (; rel < relend; rel++) 2964 { 2965 int r_type, tls_type; 2966 bfd_boolean is_tls_iele, is_tls_le; 2967 reloc_howto_type *howto; 2968 unsigned long r_symndx; 2969 struct elf_link_hash_entry *h; 2970 Elf_Internal_Sym *sym; 2971 tilegx_create_func create_func; 2972 asection *sec; 2973 bfd_vma relocation; 2974 bfd_reloc_status_type r; 2975 const char *name; 2976 bfd_vma off; 2977 bfd_boolean is_plt = FALSE; 2978 bfd_boolean resolved_to_zero; 2979 bfd_boolean unresolved_reloc; 2980 2981 r_type = TILEGX_ELF_R_TYPE (rel->r_info); 2982 if (r_type == R_TILEGX_GNU_VTINHERIT 2983 || r_type == R_TILEGX_GNU_VTENTRY) 2984 continue; 2985 2986 if ((unsigned int)r_type >= ARRAY_SIZE (tilegx_elf_howto_table)) 2987 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type); 2988 2989 howto = tilegx_elf_howto_table + r_type; 2990 2991 /* This is a final link. */ 2992 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info); 2993 h = NULL; 2994 sym = NULL; 2995 sec = NULL; 2996 unresolved_reloc = FALSE; 2997 if (r_symndx < symtab_hdr->sh_info) 2998 { 2999 sym = local_syms + r_symndx; 3000 sec = local_sections[r_symndx]; 3001 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 3002 } 3003 else 3004 { 3005 bfd_boolean warned ATTRIBUTE_UNUSED; 3006 bfd_boolean ignored ATTRIBUTE_UNUSED; 3007 3008 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 3009 r_symndx, symtab_hdr, sym_hashes, 3010 h, sec, relocation, 3011 unresolved_reloc, warned, ignored); 3012 if (warned) 3013 { 3014 /* To avoid generating warning messages about truncated 3015 relocations, set the relocation's address to be the same as 3016 the start of this section. */ 3017 if (input_section->output_section != NULL) 3018 relocation = input_section->output_section->vma; 3019 else 3020 relocation = 0; 3021 } 3022 } 3023 3024 if (sec != NULL && discarded_section (sec)) 3025 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 3026 rel, 1, relend, howto, 0, contents); 3027 3028 if (bfd_link_relocatable (info)) 3029 continue; 3030 3031 if (h != NULL) 3032 name = h->root.root.string; 3033 else 3034 { 3035 name = (bfd_elf_string_from_elf_section 3036 (input_bfd, symtab_hdr->sh_link, sym->st_name)); 3037 if (name == NULL || *name == '\0') 3038 name = bfd_section_name (input_bfd, sec); 3039 } 3040 3041 switch (r_type) 3042 { 3043 case R_TILEGX_TLS_GD_CALL: 3044 case R_TILEGX_IMM8_X0_TLS_GD_ADD: 3045 case R_TILEGX_IMM8_Y0_TLS_GD_ADD: 3046 case R_TILEGX_IMM8_X1_TLS_GD_ADD: 3047 case R_TILEGX_IMM8_Y1_TLS_GD_ADD: 3048 case R_TILEGX_IMM8_X0_TLS_ADD: 3049 case R_TILEGX_IMM8_Y0_TLS_ADD: 3050 case R_TILEGX_IMM8_X1_TLS_ADD: 3051 case R_TILEGX_IMM8_Y1_TLS_ADD: 3052 tls_type = GOT_UNKNOWN; 3053 if (h == NULL && local_got_offsets) 3054 tls_type = 3055 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx]; 3056 else if (h != NULL) 3057 tls_type = tilegx_elf_hash_entry(h)->tls_type; 3058 3059 is_tls_iele = (bfd_link_executable (info) || tls_type == GOT_TLS_IE); 3060 is_tls_le = is_tls_iele && (!input_section->sec_flg0 3061 && bfd_link_executable (info) 3062 && (h == NULL || h->dynindx == -1)); 3063 3064 if (r_type == R_TILEGX_TLS_GD_CALL) 3065 { 3066 if (is_tls_le) 3067 { 3068 /* GD -> LE */ 3069 tilegx_replace_insn (contents + rel->r_offset, 3070 insn_mask_X1, insn_move_X0X1); 3071 continue; 3072 } 3073 else if (is_tls_iele) 3074 { 3075 /* GD -> IE */ 3076 if (ABI_64_P (output_bfd)) 3077 tilegx_replace_insn (contents + rel->r_offset, 3078 insn_mask_X1, insn_tls_ie_ld_X1); 3079 else 3080 tilegx_replace_insn (contents + rel->r_offset, 3081 insn_mask_X1, insn_tls_ie_ld4s_X1); 3082 continue; 3083 } 3084 3085 /* GD -> GD */ 3086 h = (struct elf_link_hash_entry *) 3087 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE, 3088 FALSE, TRUE); 3089 BFD_ASSERT (h != NULL); 3090 r_type = R_TILEGX_JUMPOFF_X1_PLT; 3091 howto = tilegx_elf_howto_table + r_type; 3092 } 3093 else if (r_type == R_TILEGX_IMM8_X0_TLS_ADD 3094 || r_type == R_TILEGX_IMM8_X1_TLS_ADD 3095 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD 3096 || r_type == R_TILEGX_IMM8_Y1_TLS_ADD) 3097 { 3098 bfd_boolean is_pipe0 = 3099 (r_type == R_TILEGX_IMM8_X0_TLS_ADD 3100 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD); 3101 bfd_boolean is_X0X1 = 3102 (r_type == R_TILEGX_IMM8_X0_TLS_ADD 3103 || r_type == R_TILEGX_IMM8_X1_TLS_ADD); 3104 int dest_begin = is_pipe0 ? 0 : 31; 3105 int src_begin; 3106 const bfd_byte *insn; 3107 const bfd_byte *mask = NULL; 3108 3109 if (is_tls_le) 3110 { 3111 /* 1. copy dest operand into the first source operand. 3112 2. change the opcode to "move". */ 3113 src_begin = is_pipe0 ? 6 : 37; 3114 insn = is_X0X1 ? insn_move_X0X1 : insn_move_Y0Y1; 3115 3116 switch (r_type) 3117 { 3118 case R_TILEGX_IMM8_X0_TLS_ADD: 3119 mask = insn_mask_X0_no_dest_no_srca; 3120 break; 3121 case R_TILEGX_IMM8_X1_TLS_ADD: 3122 mask = insn_mask_X1_no_dest_no_srca; 3123 break; 3124 case R_TILEGX_IMM8_Y0_TLS_ADD: 3125 mask = insn_mask_Y0_no_dest_no_srca; 3126 break; 3127 case R_TILEGX_IMM8_Y1_TLS_ADD: 3128 mask = insn_mask_Y1_no_dest_no_srca; 3129 break; 3130 } 3131 } 3132 else 3133 { 3134 /* 1. copy dest operand into the second source operand. 3135 2. change the opcode to "add". */ 3136 src_begin = is_pipe0 ? 12 : 43; 3137 if (ABI_64_P (output_bfd)) 3138 insn = is_X0X1 ? insn_add_X0X1 : insn_add_Y0Y1; 3139 else 3140 insn = is_X0X1 ? insn_addx_X0X1 : insn_addx_Y0Y1; 3141 3142 switch (r_type) 3143 { 3144 case R_TILEGX_IMM8_X0_TLS_ADD: 3145 mask = insn_mask_X0_no_operand; 3146 break; 3147 case R_TILEGX_IMM8_X1_TLS_ADD: 3148 mask = insn_mask_X1_no_operand; 3149 break; 3150 case R_TILEGX_IMM8_Y0_TLS_ADD: 3151 mask = insn_mask_Y0_no_operand; 3152 break; 3153 case R_TILEGX_IMM8_Y1_TLS_ADD: 3154 mask = insn_mask_Y1_no_operand; 3155 break; 3156 } 3157 } 3158 3159 tilegx_copy_bits (contents + rel->r_offset, dest_begin, 3160 src_begin, 6); 3161 tilegx_replace_insn (contents + rel->r_offset, mask, insn); 3162 3163 continue; 3164 } 3165 else 3166 { 3167 const bfd_byte *mask = NULL; 3168 const bfd_byte *add_insn = NULL; 3169 bfd_boolean is_64bit = ABI_64_P (output_bfd); 3170 3171 switch (r_type) 3172 { 3173 case R_TILEGX_IMM8_X0_TLS_GD_ADD: 3174 add_insn = is_tls_iele 3175 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1) 3176 : insn_tls_gd_add_X0X1; 3177 mask = insn_mask_X0_no_dest_no_srca; 3178 break; 3179 case R_TILEGX_IMM8_X1_TLS_GD_ADD: 3180 add_insn = is_tls_iele 3181 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1) 3182 : insn_tls_gd_add_X0X1; 3183 mask = insn_mask_X1_no_dest_no_srca; 3184 break; 3185 case R_TILEGX_IMM8_Y0_TLS_GD_ADD: 3186 add_insn = is_tls_iele 3187 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1) 3188 : insn_tls_gd_add_Y0Y1; 3189 mask = insn_mask_Y0_no_dest_no_srca; 3190 break; 3191 case R_TILEGX_IMM8_Y1_TLS_GD_ADD: 3192 add_insn = is_tls_iele 3193 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1) 3194 : insn_tls_gd_add_Y0Y1; 3195 mask = insn_mask_Y1_no_dest_no_srca; 3196 break; 3197 } 3198 3199 tilegx_replace_insn (contents + rel->r_offset, mask, add_insn); 3200 3201 continue; 3202 } 3203 break; 3204 case R_TILEGX_TLS_IE_LOAD: 3205 if (!input_section->sec_flg0 3206 && bfd_link_executable (info) 3207 && (h == NULL || h->dynindx == -1)) 3208 { 3209 /* IE -> LE */ 3210 tilegx_replace_insn (contents + rel->r_offset, 3211 insn_mask_X1_no_dest_no_srca, 3212 insn_move_X0X1); 3213 } 3214 else 3215 { 3216 /* IE -> IE */ 3217 if (ABI_64_P (output_bfd)) 3218 tilegx_replace_insn (contents + rel->r_offset, 3219 insn_mask_X1_no_dest_no_srca, 3220 insn_tls_ie_ld_X1); 3221 else 3222 tilegx_replace_insn (contents + rel->r_offset, 3223 insn_mask_X1_no_dest_no_srca, 3224 insn_tls_ie_ld4s_X1); 3225 } 3226 continue; 3227 break; 3228 default: 3229 break; 3230 } 3231 3232 resolved_to_zero = (h != NULL 3233 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); 3234 3235 switch (r_type) 3236 { 3237 case R_TILEGX_IMM16_X0_HW0_GOT: 3238 case R_TILEGX_IMM16_X1_HW0_GOT: 3239 case R_TILEGX_IMM16_X0_HW0_LAST_GOT: 3240 case R_TILEGX_IMM16_X1_HW0_LAST_GOT: 3241 case R_TILEGX_IMM16_X0_HW1_LAST_GOT: 3242 case R_TILEGX_IMM16_X1_HW1_LAST_GOT: 3243 /* Relocation is to the entry for this symbol in the global 3244 offset table. */ 3245 if (htab->elf.sgot == NULL) 3246 abort (); 3247 3248 if (h != NULL) 3249 { 3250 bfd_boolean dyn; 3251 3252 off = h->got.offset; 3253 BFD_ASSERT (off != (bfd_vma) -1); 3254 dyn = elf_hash_table (info)->dynamic_sections_created; 3255 3256 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 3257 bfd_link_pic (info), 3258 h) 3259 || (bfd_link_pic (info) 3260 && SYMBOL_REFERENCES_LOCAL (info, h))) 3261 { 3262 /* This is actually a static link, or it is a 3263 -Bsymbolic link and the symbol is defined 3264 locally, or the symbol was forced to be local 3265 because of a version file. We must initialize 3266 this entry in the global offset table. Since the 3267 offset must always be a multiple 3268 of 8 for 64-bit, we use the least significant bit 3269 to record whether we have initialized it already. 3270 3271 When doing a dynamic link, we create a .rela.got 3272 relocation entry to initialize the value. This 3273 is done in the finish_dynamic_symbol routine. */ 3274 if ((off & 1) != 0) 3275 off &= ~1; 3276 else 3277 { 3278 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation, 3279 htab->elf.sgot->contents + off); 3280 h->got.offset |= 1; 3281 } 3282 } 3283 else 3284 unresolved_reloc = FALSE; 3285 } 3286 else 3287 { 3288 BFD_ASSERT (local_got_offsets != NULL 3289 && local_got_offsets[r_symndx] != (bfd_vma) -1); 3290 3291 off = local_got_offsets[r_symndx]; 3292 3293 /* The offset must always be a multiple of 8 on 64-bit. 3294 We use the least significant bit to record 3295 whether we have already processed this entry. */ 3296 if ((off & 1) != 0) 3297 off &= ~1; 3298 else 3299 { 3300 if (bfd_link_pic (info)) 3301 { 3302 asection *s; 3303 Elf_Internal_Rela outrel; 3304 3305 /* We need to generate a R_TILEGX_RELATIVE reloc 3306 for the dynamic linker. */ 3307 s = htab->elf.srelgot; 3308 BFD_ASSERT (s != NULL); 3309 3310 outrel.r_offset = (htab->elf.sgot->output_section->vma 3311 + htab->elf.sgot->output_offset 3312 + off); 3313 outrel.r_info = 3314 TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE); 3315 outrel.r_addend = relocation; 3316 relocation = 0; 3317 tilegx_elf_append_rela (output_bfd, s, &outrel); 3318 } 3319 3320 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation, 3321 htab->elf.sgot->contents + off); 3322 local_got_offsets[r_symndx] |= 1; 3323 } 3324 } 3325 relocation = off - got_base; 3326 break; 3327 3328 case R_TILEGX_JUMPOFF_X1_PLT: 3329 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL: 3330 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL: 3331 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL: 3332 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL: 3333 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL: 3334 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL: 3335 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL: 3336 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL: 3337 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL: 3338 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL: 3339 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL: 3340 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL: 3341 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL: 3342 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL: 3343 /* Relocation is to the entry for this symbol in the 3344 procedure linkage table. */ 3345 BFD_ASSERT (h != NULL); 3346 3347 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL) 3348 { 3349 /* We didn't make a PLT entry for this symbol. This 3350 happens when statically linking PIC code, or when 3351 using -Bsymbolic. */ 3352 break; 3353 } 3354 3355 relocation = (htab->elf.splt->output_section->vma 3356 + htab->elf.splt->output_offset 3357 + h->plt.offset); 3358 unresolved_reloc = FALSE; 3359 break; 3360 3361 case R_TILEGX_64_PCREL: 3362 case R_TILEGX_32_PCREL: 3363 case R_TILEGX_16_PCREL: 3364 case R_TILEGX_8_PCREL: 3365 case R_TILEGX_IMM16_X0_HW0_PCREL: 3366 case R_TILEGX_IMM16_X1_HW0_PCREL: 3367 case R_TILEGX_IMM16_X0_HW1_PCREL: 3368 case R_TILEGX_IMM16_X1_HW1_PCREL: 3369 case R_TILEGX_IMM16_X0_HW2_PCREL: 3370 case R_TILEGX_IMM16_X1_HW2_PCREL: 3371 case R_TILEGX_IMM16_X0_HW3_PCREL: 3372 case R_TILEGX_IMM16_X1_HW3_PCREL: 3373 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL: 3374 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL: 3375 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL: 3376 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL: 3377 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL: 3378 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL: 3379 if (h != NULL 3380 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 3381 break; 3382 /* Fall through. */ 3383 case R_TILEGX_64: 3384 case R_TILEGX_32: 3385 case R_TILEGX_16: 3386 case R_TILEGX_8: 3387 case R_TILEGX_HW0: 3388 case R_TILEGX_HW1: 3389 case R_TILEGX_HW2: 3390 case R_TILEGX_HW3: 3391 case R_TILEGX_HW0_LAST: 3392 case R_TILEGX_HW1_LAST: 3393 case R_TILEGX_HW2_LAST: 3394 case R_TILEGX_COPY: 3395 case R_TILEGX_GLOB_DAT: 3396 case R_TILEGX_JMP_SLOT: 3397 case R_TILEGX_RELATIVE: 3398 case R_TILEGX_BROFF_X1: 3399 case R_TILEGX_JUMPOFF_X1: 3400 case R_TILEGX_IMM8_X0: 3401 case R_TILEGX_IMM8_Y0: 3402 case R_TILEGX_IMM8_X1: 3403 case R_TILEGX_IMM8_Y1: 3404 case R_TILEGX_DEST_IMM8_X1: 3405 case R_TILEGX_MT_IMM14_X1: 3406 case R_TILEGX_MF_IMM14_X1: 3407 case R_TILEGX_MMSTART_X0: 3408 case R_TILEGX_MMEND_X0: 3409 case R_TILEGX_SHAMT_X0: 3410 case R_TILEGX_SHAMT_X1: 3411 case R_TILEGX_SHAMT_Y0: 3412 case R_TILEGX_SHAMT_Y1: 3413 case R_TILEGX_IMM16_X0_HW0: 3414 case R_TILEGX_IMM16_X1_HW0: 3415 case R_TILEGX_IMM16_X0_HW1: 3416 case R_TILEGX_IMM16_X1_HW1: 3417 case R_TILEGX_IMM16_X0_HW2: 3418 case R_TILEGX_IMM16_X1_HW2: 3419 case R_TILEGX_IMM16_X0_HW3: 3420 case R_TILEGX_IMM16_X1_HW3: 3421 case R_TILEGX_IMM16_X0_HW0_LAST: 3422 case R_TILEGX_IMM16_X1_HW0_LAST: 3423 case R_TILEGX_IMM16_X0_HW1_LAST: 3424 case R_TILEGX_IMM16_X1_HW1_LAST: 3425 case R_TILEGX_IMM16_X0_HW2_LAST: 3426 case R_TILEGX_IMM16_X1_HW2_LAST: 3427 if ((input_section->flags & SEC_ALLOC) == 0) 3428 break; 3429 3430 if ((bfd_link_pic (info) 3431 && (h == NULL 3432 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 3433 && !resolved_to_zero) 3434 || h->root.type != bfd_link_hash_undefweak) 3435 && (! howto->pc_relative 3436 || !SYMBOL_CALLS_LOCAL (info, h))) 3437 || (!bfd_link_pic (info) 3438 && h != NULL 3439 && h->dynindx != -1 3440 && !h->non_got_ref 3441 && ((h->def_dynamic 3442 && !h->def_regular) 3443 || h->root.type == bfd_link_hash_undefweak 3444 || h->root.type == bfd_link_hash_undefined))) 3445 { 3446 Elf_Internal_Rela outrel; 3447 bfd_boolean skip, relocate = FALSE; 3448 3449 /* When generating a shared object, these relocations 3450 are copied into the output file to be resolved at run 3451 time. */ 3452 3453 BFD_ASSERT (sreloc != NULL); 3454 3455 skip = FALSE; 3456 3457 outrel.r_offset = 3458 _bfd_elf_section_offset (output_bfd, info, input_section, 3459 rel->r_offset); 3460 if (outrel.r_offset == (bfd_vma) -1) 3461 skip = TRUE; 3462 else if (outrel.r_offset == (bfd_vma) -2) 3463 skip = TRUE, relocate = TRUE; 3464 outrel.r_offset += (input_section->output_section->vma 3465 + input_section->output_offset); 3466 3467 switch (r_type) 3468 { 3469 case R_TILEGX_64_PCREL: 3470 case R_TILEGX_32_PCREL: 3471 case R_TILEGX_16_PCREL: 3472 case R_TILEGX_8_PCREL: 3473 /* If the symbol is not dynamic, we should not keep 3474 a dynamic relocation. But an .rela.* slot has been 3475 allocated for it, output R_TILEGX_NONE. 3476 FIXME: Add code tracking needed dynamic relocs as 3477 e.g. i386 has. */ 3478 if (h->dynindx == -1) 3479 skip = TRUE, relocate = TRUE; 3480 break; 3481 } 3482 3483 if (skip) 3484 memset (&outrel, 0, sizeof outrel); 3485 /* h->dynindx may be -1 if the symbol was marked to 3486 become local. */ 3487 else if (h != NULL && 3488 h->dynindx != -1 3489 && (! is_plt 3490 || !bfd_link_pic (info) 3491 || !SYMBOLIC_BIND (info, h) 3492 || !h->def_regular)) 3493 { 3494 BFD_ASSERT (h->dynindx != -1); 3495 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, h->dynindx, r_type); 3496 outrel.r_addend = rel->r_addend; 3497 } 3498 else 3499 { 3500 if (r_type == R_TILEGX_32 || r_type == R_TILEGX_64) 3501 { 3502 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, 3503 R_TILEGX_RELATIVE); 3504 outrel.r_addend = relocation + rel->r_addend; 3505 } 3506 else 3507 { 3508 long indx; 3509 3510 outrel.r_addend = relocation + rel->r_addend; 3511 3512 if (is_plt) 3513 sec = htab->elf.splt; 3514 3515 if (bfd_is_abs_section (sec)) 3516 indx = 0; 3517 else if (sec == NULL || sec->owner == NULL) 3518 { 3519 bfd_set_error (bfd_error_bad_value); 3520 return FALSE; 3521 } 3522 else 3523 { 3524 asection *osec; 3525 3526 /* We are turning this relocation into one 3527 against a section symbol. It would be 3528 proper to subtract the symbol's value, 3529 osec->vma, from the emitted reloc addend, 3530 but ld.so expects buggy relocs. */ 3531 osec = sec->output_section; 3532 indx = elf_section_data (osec)->dynindx; 3533 3534 if (indx == 0) 3535 { 3536 osec = htab->elf.text_index_section; 3537 indx = elf_section_data (osec)->dynindx; 3538 } 3539 3540 /* FIXME: we really should be able to link non-pic 3541 shared libraries. */ 3542 if (indx == 0) 3543 { 3544 BFD_FAIL (); 3545 _bfd_error_handler 3546 (_("%pB: probably compiled without -fPIC?"), 3547 input_bfd); 3548 bfd_set_error (bfd_error_bad_value); 3549 return FALSE; 3550 } 3551 } 3552 3553 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, indx, 3554 r_type); 3555 } 3556 } 3557 3558 tilegx_elf_append_rela (output_bfd, sreloc, &outrel); 3559 3560 /* This reloc will be computed at runtime, so there's no 3561 need to do anything now. */ 3562 if (! relocate) 3563 continue; 3564 } 3565 break; 3566 3567 case R_TILEGX_IMM16_X0_HW0_TLS_LE: 3568 case R_TILEGX_IMM16_X1_HW0_TLS_LE: 3569 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE: 3570 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE: 3571 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE: 3572 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE: 3573 if (!bfd_link_executable (info)) 3574 { 3575 Elf_Internal_Rela outrel; 3576 bfd_boolean skip; 3577 3578 BFD_ASSERT (sreloc != NULL); 3579 skip = FALSE; 3580 outrel.r_offset = 3581 _bfd_elf_section_offset (output_bfd, info, input_section, 3582 rel->r_offset); 3583 if (outrel.r_offset == (bfd_vma) -1) 3584 skip = TRUE; 3585 else if (outrel.r_offset == (bfd_vma) -2) 3586 skip = TRUE; 3587 outrel.r_offset += (input_section->output_section->vma 3588 + input_section->output_offset); 3589 if (skip) 3590 memset (&outrel, 0, sizeof outrel); 3591 else 3592 { 3593 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, r_type); 3594 outrel.r_addend = relocation - dtpoff_base (info) 3595 + rel->r_addend; 3596 } 3597 3598 tilegx_elf_append_rela (output_bfd, sreloc, &outrel); 3599 continue; 3600 } 3601 relocation = tpoff (info, relocation); 3602 break; 3603 3604 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 3605 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 3606 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 3607 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 3608 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 3609 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 3610 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 3611 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 3612 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 3613 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 3614 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 3615 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 3616 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL, 3617 input_section->sec_flg0); 3618 tls_type = GOT_UNKNOWN; 3619 if (h == NULL && local_got_offsets) 3620 tls_type = 3621 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx]; 3622 else if (h != NULL) 3623 { 3624 tls_type = tilegx_elf_hash_entry(h)->tls_type; 3625 if (bfd_link_executable (info) 3626 && h->dynindx == -1 3627 && tls_type == GOT_TLS_IE) 3628 r_type = (!input_section->sec_flg0 3629 ? tilegx_tls_translate_to_le (r_type) 3630 : tilegx_tls_translate_to_ie (r_type)); 3631 } 3632 3633 if (tls_type == GOT_TLS_IE) 3634 r_type = tilegx_tls_translate_to_ie (r_type); 3635 3636 if (r_type == R_TILEGX_IMM16_X0_HW0_TLS_LE 3637 || r_type == R_TILEGX_IMM16_X1_HW0_TLS_LE 3638 || r_type == R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE 3639 || r_type == R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE 3640 || r_type == R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE 3641 || r_type == R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE) 3642 { 3643 relocation = tpoff (info, relocation); 3644 break; 3645 } 3646 3647 if (h != NULL) 3648 { 3649 off = h->got.offset; 3650 h->got.offset |= 1; 3651 } 3652 else 3653 { 3654 BFD_ASSERT (local_got_offsets != NULL); 3655 off = local_got_offsets[r_symndx]; 3656 local_got_offsets[r_symndx] |= 1; 3657 } 3658 3659 if (htab->elf.sgot == NULL) 3660 abort (); 3661 3662 if ((off & 1) != 0) 3663 off &= ~1; 3664 else 3665 { 3666 Elf_Internal_Rela outrel; 3667 int indx = 0; 3668 bfd_boolean need_relocs = FALSE; 3669 3670 if (htab->elf.srelgot == NULL) 3671 abort (); 3672 3673 if (h != NULL) 3674 { 3675 bfd_boolean dyn; 3676 dyn = htab->elf.dynamic_sections_created; 3677 3678 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 3679 bfd_link_pic (info), 3680 h) 3681 && (!bfd_link_pic (info) 3682 || !SYMBOL_REFERENCES_LOCAL (info, h))) 3683 { 3684 indx = h->dynindx; 3685 } 3686 } 3687 3688 /* The GOT entries have not been initialized yet. Do it 3689 now, and emit any relocations. */ 3690 if ((bfd_link_pic (info) || indx != 0) 3691 && (h == NULL 3692 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 3693 || h->root.type != bfd_link_hash_undefweak)) 3694 need_relocs = TRUE; 3695 3696 switch (r_type) 3697 { 3698 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 3699 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 3700 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 3701 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 3702 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 3703 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 3704 if (need_relocs) { 3705 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 3706 htab->elf.sgot->contents + off); 3707 outrel.r_offset = (htab->elf.sgot->output_section->vma 3708 + htab->elf.sgot->output_offset + off); 3709 outrel.r_addend = 0; 3710 if (indx == 0) 3711 outrel.r_addend = relocation - dtpoff_base (info); 3712 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx, 3713 TILEGX_ELF_TPOFF_RELOC (htab)); 3714 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); 3715 } else { 3716 TILEGX_ELF_PUT_WORD (htab, output_bfd, 3717 tpoff (info, relocation), 3718 htab->elf.sgot->contents + off); 3719 } 3720 break; 3721 3722 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 3723 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 3724 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 3725 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 3726 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 3727 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 3728 if (need_relocs) { 3729 outrel.r_offset = (htab->elf.sgot->output_section->vma 3730 + htab->elf.sgot->output_offset + off); 3731 outrel.r_addend = 0; 3732 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx, 3733 TILEGX_ELF_DTPMOD_RELOC (htab)); 3734 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 3735 htab->elf.sgot->contents + off); 3736 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); 3737 if (indx == 0) 3738 { 3739 BFD_ASSERT (! unresolved_reloc); 3740 TILEGX_ELF_PUT_WORD (htab, output_bfd, 3741 relocation - dtpoff_base (info), 3742 (htab->elf.sgot->contents + off + 3743 TILEGX_ELF_WORD_BYTES (htab))); 3744 } 3745 else 3746 { 3747 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 3748 (htab->elf.sgot->contents + off + 3749 TILEGX_ELF_WORD_BYTES (htab))); 3750 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx, 3751 TILEGX_ELF_DTPOFF_RELOC (htab)); 3752 outrel.r_offset += TILEGX_ELF_WORD_BYTES (htab); 3753 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); 3754 } 3755 } 3756 3757 else { 3758 /* If we are not emitting relocations for a 3759 general dynamic reference, then we must be in a 3760 static link or an executable link with the 3761 symbol binding locally. Mark it as belonging 3762 to module 1, the executable. */ 3763 TILEGX_ELF_PUT_WORD (htab, output_bfd, 1, 3764 htab->elf.sgot->contents + off ); 3765 TILEGX_ELF_PUT_WORD (htab, output_bfd, 3766 relocation - dtpoff_base (info), 3767 htab->elf.sgot->contents + off + 3768 TILEGX_ELF_WORD_BYTES (htab)); 3769 } 3770 break; 3771 } 3772 } 3773 3774 if (off >= (bfd_vma) -2) 3775 abort (); 3776 3777 relocation = off - got_base; 3778 unresolved_reloc = FALSE; 3779 howto = tilegx_elf_howto_table + r_type; 3780 break; 3781 3782 default: 3783 break; 3784 } 3785 3786 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections 3787 because such sections are not SEC_ALLOC and thus ld.so will 3788 not process them. */ 3789 if (unresolved_reloc 3790 && !((input_section->flags & SEC_DEBUGGING) != 0 3791 && h->def_dynamic) 3792 && _bfd_elf_section_offset (output_bfd, info, input_section, 3793 rel->r_offset) != (bfd_vma) -1) 3794 _bfd_error_handler 3795 /* xgettext:c-format */ 3796 (_("%pB(%pA+%#" PRIx64 "): " 3797 "unresolvable %s relocation against symbol `%s'"), 3798 input_bfd, 3799 input_section, 3800 (uint64_t) rel->r_offset, 3801 howto->name, 3802 h->root.root.string); 3803 3804 r = bfd_reloc_continue; 3805 3806 /* Get the operand creation function, if any. */ 3807 create_func = reloc_to_create_func[r_type]; 3808 if (create_func == NULL) 3809 { 3810 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3811 contents, rel->r_offset, 3812 relocation, rel->r_addend); 3813 } 3814 else 3815 { 3816 if (howto->pc_relative) 3817 { 3818 relocation -= 3819 input_section->output_section->vma + input_section->output_offset; 3820 if (howto->pcrel_offset) 3821 relocation -= rel->r_offset; 3822 } 3823 3824 bfd_byte *data; 3825 3826 /* Add the relocation addend if any to the final target value */ 3827 relocation += rel->r_addend; 3828 3829 /* Do basic range checking */ 3830 r = bfd_check_overflow (howto->complain_on_overflow, 3831 howto->bitsize, 3832 howto->rightshift, 3833 TILEGX_ELF_WORD_BYTES (htab) * 8, 3834 relocation); 3835 3836 /* 3837 * Write the relocated value out into the raw section data. 3838 * Don't put a relocation out in the .rela section. 3839 */ 3840 tilegx_bundle_bits mask = create_func(-1); 3841 tilegx_bundle_bits value = create_func(relocation >> howto->rightshift); 3842 3843 /* Only touch bytes while the mask is not 0, so we 3844 don't write to out of bounds memory if this is actually 3845 a 16-bit switch instruction. */ 3846 for (data = contents + rel->r_offset; mask != 0; data++) 3847 { 3848 bfd_byte byte_mask = (bfd_byte)mask; 3849 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask); 3850 mask >>= 8; 3851 value >>= 8; 3852 } 3853 } 3854 3855 if (r != bfd_reloc_ok) 3856 { 3857 const char *msg = NULL; 3858 3859 switch (r) 3860 { 3861 case bfd_reloc_overflow: 3862 (*info->callbacks->reloc_overflow) 3863 (info, (h ? &h->root : NULL), name, howto->name, 3864 (bfd_vma) 0, input_bfd, input_section, rel->r_offset); 3865 break; 3866 3867 case bfd_reloc_undefined: 3868 (*info->callbacks->undefined_symbol) 3869 (info, name, input_bfd, input_section, rel->r_offset, TRUE); 3870 break; 3871 3872 case bfd_reloc_outofrange: 3873 msg = _("internal error: out of range error"); 3874 break; 3875 3876 case bfd_reloc_notsupported: 3877 msg = _("internal error: unsupported relocation error"); 3878 break; 3879 3880 case bfd_reloc_dangerous: 3881 msg = _("internal error: dangerous relocation"); 3882 break; 3883 3884 default: 3885 msg = _("internal error: unknown error"); 3886 break; 3887 } 3888 3889 if (msg) 3890 (*info->callbacks->warning) (info, msg, name, input_bfd, 3891 input_section, rel->r_offset); 3892 } 3893 } 3894 3895 return TRUE; 3896 } 3897 3898 /* Finish up dynamic symbol handling. We set the contents of various 3899 dynamic sections here. */ 3900 3901 bfd_boolean 3902 tilegx_elf_finish_dynamic_symbol (bfd *output_bfd, 3903 struct bfd_link_info *info, 3904 struct elf_link_hash_entry *h, 3905 Elf_Internal_Sym *sym) 3906 { 3907 struct tilegx_elf_link_hash_table *htab; 3908 3909 htab = tilegx_elf_hash_table (info); 3910 BFD_ASSERT (htab != NULL); 3911 3912 if (h->plt.offset != (bfd_vma) -1) 3913 { 3914 asection *splt; 3915 asection *srela; 3916 asection *sgotplt; 3917 Elf_Internal_Rela rela; 3918 bfd_byte *loc; 3919 bfd_vma r_offset; 3920 const struct elf_backend_data *bed = get_elf_backend_data (output_bfd); 3921 3922 3923 int rela_index; 3924 3925 /* This symbol has an entry in the PLT. Set it up. */ 3926 3927 BFD_ASSERT (h->dynindx != -1); 3928 3929 splt = htab->elf.splt; 3930 srela = htab->elf.srelplt; 3931 sgotplt = htab->elf.sgotplt; 3932 3933 if (splt == NULL || srela == NULL) 3934 abort (); 3935 3936 /* Fill in the entry in the procedure linkage table. */ 3937 rela_index = tilegx_plt_entry_build (output_bfd, htab, splt, sgotplt, 3938 h->plt.offset, &r_offset); 3939 3940 /* Fill in the entry in the global offset table, which initially points 3941 to the beginning of the plt. */ 3942 TILEGX_ELF_PUT_WORD (htab, output_bfd, 3943 splt->output_section->vma + splt->output_offset, 3944 sgotplt->contents + r_offset); 3945 3946 /* Fill in the entry in the .rela.plt section. */ 3947 rela.r_offset = (sgotplt->output_section->vma 3948 + sgotplt->output_offset 3949 + r_offset); 3950 rela.r_addend = 0; 3951 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_JMP_SLOT); 3952 3953 loc = srela->contents + rela_index * TILEGX_ELF_RELA_BYTES (htab); 3954 bed->s->swap_reloca_out (output_bfd, &rela, loc); 3955 3956 if (!h->def_regular) 3957 { 3958 /* Mark the symbol as undefined, rather than as defined in 3959 the .plt section. Leave the value alone. */ 3960 sym->st_shndx = SHN_UNDEF; 3961 /* If the symbol is weak, we do need to clear the value. 3962 Otherwise, the PLT entry would provide a definition for 3963 the symbol even if the symbol wasn't defined anywhere, 3964 and so the symbol would never be NULL. */ 3965 if (!h->ref_regular_nonweak) 3966 sym->st_value = 0; 3967 } 3968 } 3969 3970 if (h->got.offset != (bfd_vma) -1 3971 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_GD 3972 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_IE) 3973 { 3974 asection *sgot; 3975 asection *srela; 3976 Elf_Internal_Rela rela; 3977 3978 /* This symbol has an entry in the GOT. Set it up. */ 3979 3980 sgot = htab->elf.sgot; 3981 srela = htab->elf.srelgot; 3982 BFD_ASSERT (sgot != NULL && srela != NULL); 3983 3984 rela.r_offset = (sgot->output_section->vma 3985 + sgot->output_offset 3986 + (h->got.offset &~ (bfd_vma) 1)); 3987 3988 /* If this is a -Bsymbolic link, and the symbol is defined 3989 locally, we just want to emit a RELATIVE reloc. Likewise if 3990 the symbol was forced to be local because of a version file. 3991 The entry in the global offset table will already have been 3992 initialized in the relocate_section function. */ 3993 if (bfd_link_pic (info) 3994 && (info->symbolic || h->dynindx == -1) 3995 && h->def_regular) 3996 { 3997 asection *sec = h->root.u.def.section; 3998 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE); 3999 rela.r_addend = (h->root.u.def.value 4000 + sec->output_section->vma 4001 + sec->output_offset); 4002 } 4003 else 4004 { 4005 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_GLOB_DAT); 4006 rela.r_addend = 0; 4007 } 4008 4009 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 4010 sgot->contents + (h->got.offset & ~(bfd_vma) 1)); 4011 tilegx_elf_append_rela (output_bfd, srela, &rela); 4012 } 4013 4014 if (h->needs_copy) 4015 { 4016 asection *s; 4017 Elf_Internal_Rela rela; 4018 4019 /* This symbols needs a copy reloc. Set it up. */ 4020 BFD_ASSERT (h->dynindx != -1); 4021 4022 if (h->root.u.def.section == htab->elf.sdynrelro) 4023 s = htab->elf.sreldynrelro; 4024 else 4025 s = htab->elf.srelbss; 4026 BFD_ASSERT (s != NULL); 4027 4028 rela.r_offset = (h->root.u.def.value 4029 + h->root.u.def.section->output_section->vma 4030 + h->root.u.def.section->output_offset); 4031 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_COPY); 4032 rela.r_addend = 0; 4033 tilegx_elf_append_rela (output_bfd, s, &rela); 4034 } 4035 4036 /* Mark some specially defined symbols as absolute. */ 4037 if (h == htab->elf.hdynamic 4038 || (h == htab->elf.hgot || h == htab->elf.hplt)) 4039 sym->st_shndx = SHN_ABS; 4040 4041 return TRUE; 4042 } 4043 4044 /* Finish up the dynamic sections. */ 4045 4046 static bfd_boolean 4047 tilegx_finish_dyn (bfd *output_bfd, struct bfd_link_info *info, 4048 bfd *dynobj, asection *sdyn, 4049 asection *splt ATTRIBUTE_UNUSED) 4050 { 4051 struct tilegx_elf_link_hash_table *htab; 4052 const struct elf_backend_data *bed; 4053 bfd_byte *dyncon, *dynconend; 4054 size_t dynsize; 4055 4056 htab = tilegx_elf_hash_table (info); 4057 BFD_ASSERT (htab != NULL); 4058 bed = get_elf_backend_data (output_bfd); 4059 dynsize = bed->s->sizeof_dyn; 4060 dynconend = sdyn->contents + sdyn->size; 4061 4062 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize) 4063 { 4064 Elf_Internal_Dyn dyn; 4065 asection *s; 4066 4067 bed->s->swap_dyn_in (dynobj, dyncon, &dyn); 4068 4069 switch (dyn.d_tag) 4070 { 4071 case DT_PLTGOT: 4072 s = htab->elf.sgotplt; 4073 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 4074 break; 4075 case DT_JMPREL: 4076 s = htab->elf.srelplt; 4077 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 4078 break; 4079 case DT_PLTRELSZ: 4080 s = htab->elf.srelplt; 4081 dyn.d_un.d_val = s->size; 4082 break; 4083 default: 4084 continue; 4085 } 4086 4087 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon); 4088 } 4089 return TRUE; 4090 } 4091 4092 bfd_boolean 4093 tilegx_elf_finish_dynamic_sections (bfd *output_bfd, 4094 struct bfd_link_info *info) 4095 { 4096 bfd *dynobj; 4097 asection *sdyn; 4098 struct tilegx_elf_link_hash_table *htab; 4099 size_t pad_size; 4100 4101 htab = tilegx_elf_hash_table (info); 4102 BFD_ASSERT (htab != NULL); 4103 dynobj = htab->elf.dynobj; 4104 4105 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 4106 4107 if (elf_hash_table (info)->dynamic_sections_created) 4108 { 4109 asection *splt; 4110 bfd_boolean ret; 4111 4112 splt = htab->elf.splt; 4113 BFD_ASSERT (splt != NULL && sdyn != NULL); 4114 4115 ret = tilegx_finish_dyn (output_bfd, info, dynobj, sdyn, splt); 4116 4117 if (!ret) 4118 return ret; 4119 4120 /* Fill in the head and tail entries in the procedure linkage table. */ 4121 if (splt->size > 0) 4122 { 4123 memcpy (splt->contents, 4124 ABI_64_P (output_bfd) ? 4125 tilegx64_plt0_entry : tilegx32_plt0_entry, 4126 PLT_HEADER_SIZE); 4127 4128 memcpy (splt->contents + splt->size 4129 - PLT_ENTRY_SIZE + PLT_HEADER_SIZE, 4130 ABI_64_P (output_bfd) ? 4131 tilegx64_plt_tail_entry : tilegx32_plt_tail_entry, 4132 PLT_TAIL_SIZE); 4133 /* Add padding so that the plt section is a multiple of its 4134 entry size. */ 4135 pad_size = PLT_ENTRY_SIZE - PLT_HEADER_SIZE - PLT_TAIL_SIZE; 4136 memset (splt->contents + splt->size - pad_size, 0, pad_size); 4137 4138 elf_section_data (splt->output_section)->this_hdr.sh_entsize 4139 = PLT_ENTRY_SIZE; 4140 } 4141 } 4142 4143 if (htab->elf.sgotplt) 4144 { 4145 if (bfd_is_abs_section (htab->elf.sgotplt->output_section)) 4146 { 4147 _bfd_error_handler 4148 (_("discarded output section: `%pA'"), htab->elf.sgotplt); 4149 return FALSE; 4150 } 4151 4152 if (htab->elf.sgotplt->size > 0) 4153 { 4154 /* Write the first two entries in .got.plt, needed for the dynamic 4155 linker. */ 4156 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) -1, 4157 htab->elf.sgotplt->contents); 4158 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) 0, 4159 htab->elf.sgotplt->contents 4160 + GOT_ENTRY_SIZE (htab)); 4161 4162 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4163 GOT_ENTRY_SIZE (htab); 4164 } 4165 } 4166 4167 if (htab->elf.sgot) 4168 { 4169 if (htab->elf.sgot->size > 0) 4170 { 4171 /* Set the first entry in the global offset table to the address of 4172 the dynamic section. */ 4173 bfd_vma val = (sdyn ? 4174 sdyn->output_section->vma + sdyn->output_offset : 4175 0); 4176 TILEGX_ELF_PUT_WORD (htab, output_bfd, val, 4177 htab->elf.sgot->contents); 4178 4179 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4180 GOT_ENTRY_SIZE (htab); 4181 } 4182 } 4183 4184 return TRUE; 4185 } 4186 4187 4188 4190 /* Return address for Ith PLT stub in section PLT, for relocation REL 4191 or (bfd_vma) -1 if it should not be included. */ 4192 4193 bfd_vma 4194 tilegx_elf_plt_sym_val (bfd_vma i, const asection *plt, 4195 const arelent *rel ATTRIBUTE_UNUSED) 4196 { 4197 return plt->vma + PLT_HEADER_SIZE + i * PLT_ENTRY_SIZE; 4198 } 4199 4200 enum elf_reloc_type_class 4201 tilegx_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, 4202 const asection *rel_sec ATTRIBUTE_UNUSED, 4203 const Elf_Internal_Rela *rela) 4204 { 4205 switch ((int) TILEGX_ELF_R_TYPE (rela->r_info)) 4206 { 4207 case R_TILEGX_RELATIVE: 4208 return reloc_class_relative; 4209 case R_TILEGX_JMP_SLOT: 4210 return reloc_class_plt; 4211 case R_TILEGX_COPY: 4212 return reloc_class_copy; 4213 default: 4214 return reloc_class_normal; 4215 } 4216 } 4217 4218 int 4219 tilegx_additional_program_headers (bfd *abfd, 4220 struct bfd_link_info *info ATTRIBUTE_UNUSED) 4221 { 4222 /* Each .intrpt section specified by the user adds another PT_LOAD 4223 header since the sections are discontiguous. */ 4224 static const char intrpt_sections[4][9] = 4225 { 4226 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3" 4227 }; 4228 int count = 0; 4229 int i; 4230 4231 for (i = 0; i < 4; i++) 4232 { 4233 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]); 4234 if (sec != NULL && (sec->flags & SEC_LOAD) != 0) 4235 ++count; 4236 } 4237 4238 /* Add four "padding" headers in to leave room in case a custom linker 4239 script does something fancy. Otherwise ld complains that it ran 4240 out of program headers and refuses to link. */ 4241 count += 4; 4242 4243 return count; 4244 } 4245 4246 4247 bfd_boolean 4248 _bfd_tilegx_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) 4249 { 4250 bfd *obfd = info->output_bfd; 4251 const char *targ1 = bfd_get_target (ibfd); 4252 const char *targ2 = bfd_get_target (obfd); 4253 4254 if (strcmp (targ1, targ2) != 0) 4255 { 4256 _bfd_error_handler 4257 /* xgettext:c-format */ 4258 (_("%pB: cannot link together %s and %s objects"), 4259 ibfd, targ1, targ2); 4260 bfd_set_error (bfd_error_bad_value); 4261 return FALSE; 4262 } 4263 4264 return TRUE; 4265 } 4266
Indexes created Tue Sep 15 00:24:42 UTC 2026