elfxx-tilegx.c revision 1.1
1 /* TILE-Gx-specific support for ELF. 2 Copyright 2011, 2012 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 2, /* size (0 = byte, 1 = short, 2 = long) */ 76 32, /* bitsize */ 77 FALSE, /* pc_relative */ 78 0, /* bitpos */ 79 complain_overflow_bitfield, /* 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 /* These relocs are currently not defined. */ 494 EMPTY_HOWTO (66), 495 EMPTY_HOWTO (67), 496 EMPTY_HOWTO (68), 497 EMPTY_HOWTO (69), 498 EMPTY_HOWTO (70), 499 EMPTY_HOWTO (71), 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 /* These relocs are currently not defined. */ 506 EMPTY_HOWTO (76), 507 EMPTY_HOWTO (77), 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 EMPTY_HOWTO (94), 534 EMPTY_HOWTO (95), 535 EMPTY_HOWTO (96), 536 EMPTY_HOWTO (97), 537 EMPTY_HOWTO (98), 538 EMPTY_HOWTO (99), 539 540 #define TILEGX_IMM16_HOWTO_LAST_TLS_IE(name, rshift) \ 541 HOWTO (name, rshift, 1, 16, FALSE, 0, \ 542 complain_overflow_signed, bfd_elf_generic_reloc, \ 543 #name, FALSE, 0, 0xffff, TRUE) 544 545 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE, 0), 546 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE, 0), 547 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE, 16), 548 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE, 16), 549 EMPTY_HOWTO (104), 550 EMPTY_HOWTO (105), 551 552 HOWTO(R_TILEGX_TLS_DTPMOD64, 0, 0, 0, FALSE, 0, complain_overflow_dont, 553 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPMOD64", 554 FALSE, 0, 0, TRUE), 555 HOWTO(R_TILEGX_TLS_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, 556 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPOFF64", 557 FALSE, 0, -1, TRUE), 558 HOWTO(R_TILEGX_TLS_TPOFF64, 0, 0, 0, FALSE, 0, complain_overflow_dont, 559 bfd_elf_generic_reloc, "R_TILEGX_TLS_TPOFF64", 560 FALSE, 0, 0, TRUE), 561 562 HOWTO(R_TILEGX_TLS_DTPMOD32, 0, 0, 0, FALSE, 0, complain_overflow_dont, 563 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPMOD32", 564 FALSE, 0, 0, TRUE), 565 HOWTO(R_TILEGX_TLS_DTPOFF32, 0, 4, 32, FALSE, 0, complain_overflow_bitfield, 566 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPOFF32", 567 FALSE, 0, -1, TRUE), 568 HOWTO(R_TILEGX_TLS_TPOFF32, 0, 0, 0, FALSE, 0, complain_overflow_dont, 569 bfd_elf_generic_reloc, "R_TILEGX_TLS_TPOFF32", 570 FALSE, 0, 0, TRUE), 571 572 HOWTO (R_TILEGX_TLS_GD_CALL, /* type */ 573 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ 574 2, /* size (0 = byte, 1 = short, 2 = long) */ 575 27, /* bitsize */ 576 TRUE, /* pc_relative */ 577 0, /* bitpos */ 578 complain_overflow_signed,/* complain_on_overflow */ 579 bfd_elf_generic_reloc, /* special_function */ 580 "R_TILEGX_TLS_GD_CALL", /* name */ 581 FALSE, /* partial_inplace */ 582 0, /* src_mask */ 583 -1, /* dst_mask */ 584 TRUE), /* pcrel_offset */ 585 586 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0_TLS_GD_ADD, 0, 8), 587 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_GD_ADD, 0, 8), 588 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_GD_ADD, 0, 8), 589 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_GD_ADD, 0, 8), 590 TILEGX_IMM_HOWTO(R_TILEGX_TLS_IE_LOAD, 0, 8), 591 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0_TLS_ADD, 0, 8), 592 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_ADD, 0, 8), 593 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_ADD, 0, 8), 594 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_ADD, 0, 8), 595 }; 596 597 static reloc_howto_type tilegx_elf_howto_table2 [] = 598 { 599 /* GNU extension to record C++ vtable hierarchy */ 600 HOWTO (R_TILEGX_GNU_VTINHERIT, /* type */ 601 0, /* rightshift */ 602 4, /* size (0 = byte, 1 = short, 2 = long) */ 603 0, /* bitsize */ 604 FALSE, /* pc_relative */ 605 0, /* bitpos */ 606 complain_overflow_dont, /* complain_on_overflow */ 607 NULL, /* special_function */ 608 "R_TILEGX_GNU_VTINHERIT", /* name */ 609 FALSE, /* partial_inplace */ 610 0, /* src_mask */ 611 0, /* dst_mask */ 612 FALSE), /* pcrel_offset */ 613 614 /* GNU extension to record C++ vtable member usage */ 615 HOWTO (R_TILEGX_GNU_VTENTRY, /* type */ 616 0, /* rightshift */ 617 4, /* size (0 = byte, 1 = short, 2 = long) */ 618 0, /* bitsize */ 619 FALSE, /* pc_relative */ 620 0, /* bitpos */ 621 complain_overflow_dont, /* complain_on_overflow */ 622 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 623 "R_TILEGX_GNU_VTENTRY", /* name */ 624 FALSE, /* partial_inplace */ 625 0, /* src_mask */ 626 0, /* dst_mask */ 627 FALSE), /* pcrel_offset */ 628 629 }; 630 631 /* Map BFD reloc types to TILEGX ELF reloc types. */ 633 634 typedef struct tilegx_reloc_map 635 { 636 bfd_reloc_code_real_type bfd_reloc_val; 637 unsigned int tilegx_reloc_val; 638 reloc_howto_type * table; 639 } reloc_map; 640 641 static const reloc_map tilegx_reloc_map [] = 642 { 643 #define TH_REMAP(bfd, tilegx) \ 644 { bfd, tilegx, tilegx_elf_howto_table }, 645 646 /* Standard relocations. */ 647 TH_REMAP (BFD_RELOC_NONE, R_TILEGX_NONE) 648 TH_REMAP (BFD_RELOC_64, R_TILEGX_64) 649 TH_REMAP (BFD_RELOC_32, R_TILEGX_32) 650 TH_REMAP (BFD_RELOC_16, R_TILEGX_16) 651 TH_REMAP (BFD_RELOC_8, R_TILEGX_8) 652 TH_REMAP (BFD_RELOC_64_PCREL, R_TILEGX_64_PCREL) 653 TH_REMAP (BFD_RELOC_32_PCREL, R_TILEGX_32_PCREL) 654 TH_REMAP (BFD_RELOC_16_PCREL, R_TILEGX_16_PCREL) 655 TH_REMAP (BFD_RELOC_8_PCREL, R_TILEGX_8_PCREL) 656 657 #define SIMPLE_REMAP(t) TH_REMAP (BFD_RELOC_##t, R_##t) 658 659 /* Custom relocations. */ 660 SIMPLE_REMAP (TILEGX_HW0) 661 SIMPLE_REMAP (TILEGX_HW1) 662 SIMPLE_REMAP (TILEGX_HW2) 663 SIMPLE_REMAP (TILEGX_HW3) 664 SIMPLE_REMAP (TILEGX_HW0_LAST) 665 SIMPLE_REMAP (TILEGX_HW1_LAST) 666 SIMPLE_REMAP (TILEGX_HW2_LAST) 667 SIMPLE_REMAP (TILEGX_COPY) 668 SIMPLE_REMAP (TILEGX_GLOB_DAT) 669 SIMPLE_REMAP (TILEGX_JMP_SLOT) 670 SIMPLE_REMAP (TILEGX_RELATIVE) 671 SIMPLE_REMAP (TILEGX_BROFF_X1) 672 SIMPLE_REMAP (TILEGX_JUMPOFF_X1) 673 SIMPLE_REMAP (TILEGX_JUMPOFF_X1_PLT) 674 SIMPLE_REMAP (TILEGX_IMM8_X0) 675 SIMPLE_REMAP (TILEGX_IMM8_Y0) 676 SIMPLE_REMAP (TILEGX_IMM8_X1) 677 SIMPLE_REMAP (TILEGX_IMM8_Y1) 678 SIMPLE_REMAP (TILEGX_DEST_IMM8_X1) 679 SIMPLE_REMAP (TILEGX_MT_IMM14_X1) 680 SIMPLE_REMAP (TILEGX_MF_IMM14_X1) 681 SIMPLE_REMAP (TILEGX_MMSTART_X0) 682 SIMPLE_REMAP (TILEGX_MMEND_X0) 683 SIMPLE_REMAP (TILEGX_SHAMT_X0) 684 SIMPLE_REMAP (TILEGX_SHAMT_X1) 685 SIMPLE_REMAP (TILEGX_SHAMT_Y0) 686 SIMPLE_REMAP (TILEGX_SHAMT_Y1) 687 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0) 688 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0) 689 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1) 690 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1) 691 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2) 692 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2) 693 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3) 694 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3) 695 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST) 696 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST) 697 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST) 698 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST) 699 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST) 700 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST) 701 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_PCREL) 702 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_PCREL) 703 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_PCREL) 704 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_PCREL) 705 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_PCREL) 706 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_PCREL) 707 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3_PCREL) 708 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3_PCREL) 709 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_PCREL) 710 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_PCREL) 711 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_PCREL) 712 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_PCREL) 713 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST_PCREL) 714 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST_PCREL) 715 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_GOT) 716 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_GOT) 717 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_GOT) 718 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_GOT) 719 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_GOT) 720 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_GOT) 721 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_GD) 722 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_GD) 723 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_LE) 724 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_LE) 725 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_LE) 726 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_LE) 727 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_LE) 728 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_LE) 729 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_GD) 730 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_GD) 731 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_GD) 732 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_GD) 733 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_IE) 734 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_IE) 735 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_IE) 736 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_IE) 737 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_IE) 738 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_IE) 739 740 SIMPLE_REMAP (TILEGX_TLS_DTPMOD64) 741 SIMPLE_REMAP (TILEGX_TLS_DTPOFF64) 742 SIMPLE_REMAP (TILEGX_TLS_TPOFF64) 743 744 SIMPLE_REMAP (TILEGX_TLS_DTPMOD32) 745 SIMPLE_REMAP (TILEGX_TLS_DTPOFF32) 746 SIMPLE_REMAP (TILEGX_TLS_TPOFF32) 747 748 SIMPLE_REMAP (TILEGX_TLS_GD_CALL) 749 SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_GD_ADD) 750 SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_GD_ADD) 751 SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_GD_ADD) 752 SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_GD_ADD) 753 SIMPLE_REMAP (TILEGX_TLS_IE_LOAD) 754 SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_ADD) 755 SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_ADD) 756 SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_ADD) 757 SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_ADD) 758 759 #undef SIMPLE_REMAP 760 #undef TH_REMAP 761 762 { BFD_RELOC_VTABLE_INHERIT, R_TILEGX_GNU_VTINHERIT, tilegx_elf_howto_table2 }, 763 { BFD_RELOC_VTABLE_ENTRY, R_TILEGX_GNU_VTENTRY, tilegx_elf_howto_table2 }, 764 }; 765 766 767 768 /* The TILE-Gx linker needs to keep track of the number of relocs that it 769 decides to copy as dynamic relocs in check_relocs for each symbol. 770 This is so that it can later discard them if they are found to be 771 unnecessary. We store the information in a field extending the 772 regular ELF linker hash table. */ 773 774 struct tilegx_elf_dyn_relocs 775 { 776 struct tilegx_elf_dyn_relocs *next; 777 778 /* The input section of the reloc. */ 779 asection *sec; 780 781 /* Total number of relocs copied for the input section. */ 782 bfd_size_type count; 783 784 /* Number of pc-relative relocs copied for the input section. */ 785 bfd_size_type pc_count; 786 }; 787 788 /* TILEGX ELF linker hash entry. */ 789 790 struct tilegx_elf_link_hash_entry 791 { 792 struct elf_link_hash_entry elf; 793 794 /* Track dynamic relocs copied for this symbol. */ 795 struct tilegx_elf_dyn_relocs *dyn_relocs; 796 797 #define GOT_UNKNOWN 0 798 #define GOT_NORMAL 1 799 #define GOT_TLS_GD 2 800 #define GOT_TLS_IE 4 801 unsigned char tls_type; 802 }; 803 804 #define tilegx_elf_hash_entry(ent) \ 805 ((struct tilegx_elf_link_hash_entry *)(ent)) 806 807 struct _bfd_tilegx_elf_obj_tdata 808 { 809 struct elf_obj_tdata root; 810 811 /* tls_type for each local got entry. */ 812 char *local_got_tls_type; 813 }; 814 815 #define _bfd_tilegx_elf_tdata(abfd) \ 816 ((struct _bfd_tilegx_elf_obj_tdata *) (abfd)->tdata.any) 817 818 #define _bfd_tilegx_elf_local_got_tls_type(abfd) \ 819 (_bfd_tilegx_elf_tdata (abfd)->local_got_tls_type) 820 821 #define is_tilegx_elf(bfd) \ 822 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ 823 && elf_tdata (bfd) != NULL \ 824 && elf_object_id (bfd) == TILEGX_ELF_DATA) 825 826 #include "elf/common.h" 827 #include "elf/internal.h" 828 829 struct tilegx_elf_link_hash_table 830 { 831 struct elf_link_hash_table elf; 832 833 int bytes_per_word; 834 int word_align_power; 835 int bytes_per_rela; 836 int dtpmod_reloc; 837 int dtpoff_reloc; 838 int tpoff_reloc; 839 bfd_vma (*r_info) (Elf_Internal_Rela *, bfd_vma, bfd_vma); 840 bfd_vma (*r_symndx) (bfd_vma); 841 void (*put_word) (bfd *, bfd_vma, void *); 842 const char *dynamic_interpreter; 843 844 /* Short-cuts to get to dynamic linker sections. */ 845 asection *sdynbss; 846 asection *srelbss; 847 848 /* Whether LE transition has been disabled for some of the 849 sections. */ 850 bfd_boolean disable_le_transition; 851 852 /* Small local sym to section mapping cache. */ 853 struct sym_cache sym_cache; 854 }; 855 856 857 /* Get the Tile ELF linker hash table from a link_info structure. */ 858 #define tilegx_elf_hash_table(p) \ 859 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 860 == TILEGX_ELF_DATA ? ((struct tilegx_elf_link_hash_table *) ((p)->hash)) : NULL) 861 862 #ifdef BFD64 863 static bfd_vma 864 tilegx_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED, 865 bfd_vma rel_index, 866 bfd_vma type) 867 { 868 return ELF64_R_INFO (rel_index, type); 869 } 870 871 static bfd_vma 872 tilegx_elf_r_symndx_64 (bfd_vma r_info) 873 { 874 return ELF64_R_SYM (r_info); 875 } 876 877 static void 878 tilegx_put_word_64 (bfd *abfd, bfd_vma val, void *ptr) 879 { 880 bfd_put_64 (abfd, val, ptr); 881 } 882 #endif /* BFD64 */ 883 884 static bfd_vma 885 tilegx_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED, 886 bfd_vma rel_index, 887 bfd_vma type) 888 { 889 return ELF32_R_INFO (rel_index, type); 890 } 891 892 static bfd_vma 893 tilegx_elf_r_symndx_32 (bfd_vma r_info) 894 { 895 return ELF32_R_SYM (r_info); 896 } 897 898 static void 899 tilegx_put_word_32 (bfd *abfd, bfd_vma val, void *ptr) 900 { 901 bfd_put_32 (abfd, val, ptr); 902 } 903 904 reloc_howto_type * 905 tilegx_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, 906 bfd_reloc_code_real_type code) 907 { 908 unsigned int i; 909 910 for (i = ARRAY_SIZE (tilegx_reloc_map); --i;) 911 { 912 const reloc_map * entry; 913 914 entry = tilegx_reloc_map + i; 915 916 if (entry->bfd_reloc_val == code) 917 return entry->table + (entry->tilegx_reloc_val 918 - entry->table[0].type); 919 } 920 921 return NULL; 922 } 923 924 reloc_howto_type * 925 tilegx_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 926 const char *r_name) 927 { 928 unsigned int i; 929 930 for (i = 0; 931 i < (sizeof (tilegx_elf_howto_table) 932 / sizeof (tilegx_elf_howto_table[0])); 933 i++) 934 if (tilegx_elf_howto_table[i].name != NULL 935 && strcasecmp (tilegx_elf_howto_table[i].name, r_name) == 0) 936 return &tilegx_elf_howto_table[i]; 937 938 return NULL; 939 } 940 941 void 942 tilegx_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, 943 arelent *cache_ptr, 944 Elf_Internal_Rela *dst) 945 { 946 unsigned int r_type = TILEGX_ELF_R_TYPE (dst->r_info); 947 948 if (r_type <= (unsigned int) R_TILEGX_IMM8_Y1_TLS_ADD) 949 cache_ptr->howto = &tilegx_elf_howto_table [r_type]; 950 else if (r_type - R_TILEGX_GNU_VTINHERIT 951 <= (unsigned int) R_TILEGX_GNU_VTENTRY) 952 cache_ptr->howto 953 = &tilegx_elf_howto_table2 [r_type - R_TILEGX_GNU_VTINHERIT]; 954 else 955 abort (); 956 } 957 958 typedef tilegx_bundle_bits (*tilegx_create_func)(int); 959 960 static const tilegx_create_func reloc_to_create_func[] = 961 { 962 /* The first twenty relocation types don't correspond to operands */ 963 NULL, 964 NULL, 965 NULL, 966 NULL, 967 NULL, 968 NULL, 969 NULL, 970 NULL, 971 NULL, 972 NULL, 973 NULL, 974 NULL, 975 NULL, 976 NULL, 977 NULL, 978 NULL, 979 NULL, 980 NULL, 981 NULL, 982 NULL, 983 984 /* The remaining relocations are used for immediate operands */ 985 create_BrOff_X1, 986 create_JumpOff_X1, 987 create_JumpOff_X1, 988 create_Imm8_X0, 989 create_Imm8_Y0, 990 create_Imm8_X1, 991 create_Imm8_Y1, 992 create_Dest_Imm8_X1, 993 create_MT_Imm14_X1, 994 create_MF_Imm14_X1, 995 create_BFStart_X0, 996 create_BFEnd_X0, 997 create_ShAmt_X0, 998 create_ShAmt_X1, 999 create_ShAmt_Y0, 1000 create_ShAmt_Y1, 1001 create_Imm16_X0, 1002 create_Imm16_X1, 1003 create_Imm16_X0, 1004 create_Imm16_X1, 1005 create_Imm16_X0, 1006 create_Imm16_X1, 1007 create_Imm16_X0, 1008 create_Imm16_X1, 1009 create_Imm16_X0, 1010 create_Imm16_X1, 1011 create_Imm16_X0, 1012 create_Imm16_X1, 1013 create_Imm16_X0, 1014 create_Imm16_X1, 1015 create_Imm16_X0, 1016 create_Imm16_X1, 1017 create_Imm16_X0, 1018 create_Imm16_X1, 1019 create_Imm16_X0, 1020 create_Imm16_X1, 1021 create_Imm16_X0, 1022 create_Imm16_X1, 1023 create_Imm16_X0, 1024 create_Imm16_X1, 1025 create_Imm16_X0, 1026 create_Imm16_X1, 1027 create_Imm16_X0, 1028 create_Imm16_X1, 1029 create_Imm16_X0, 1030 create_Imm16_X1, 1031 NULL, 1032 NULL, 1033 NULL, 1034 NULL, 1035 NULL, 1036 NULL, 1037 create_Imm16_X0, 1038 create_Imm16_X1, 1039 create_Imm16_X0, 1040 create_Imm16_X1, 1041 NULL, 1042 NULL, 1043 create_Imm16_X0, 1044 create_Imm16_X1, 1045 create_Imm16_X0, 1046 create_Imm16_X1, 1047 create_Imm16_X0, 1048 create_Imm16_X1, 1049 create_Imm16_X0, 1050 create_Imm16_X1, 1051 create_Imm16_X0, 1052 create_Imm16_X1, 1053 create_Imm16_X0, 1054 create_Imm16_X1, 1055 NULL, 1056 NULL, 1057 create_Imm16_X0, 1058 create_Imm16_X1, 1059 NULL, 1060 NULL, 1061 NULL, 1062 NULL, 1063 NULL, 1064 NULL, 1065 create_Imm16_X0, 1066 create_Imm16_X1, 1067 create_Imm16_X0, 1068 create_Imm16_X1, 1069 }; 1070 1071 static void 1072 tilegx_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel) 1073 { 1074 const struct elf_backend_data *bed; 1075 bfd_byte *loc; 1076 1077 bed = get_elf_backend_data (abfd); 1078 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela); 1079 bed->s->swap_reloca_out (abfd, rel, loc); 1080 } 1081 1082 /* PLT/GOT stuff */ 1083 1084 /* The procedure linkage table starts with the following header: 1085 1086 ld_add r28, r27, 8 1087 ld r27, r27 1088 { 1089 jr r27 1090 info 10 ## SP not offset, return PC in LR 1091 } 1092 1093 Subsequent entries are the following, jumping to the header at the end: 1094 1095 { 1096 moveli r28, <_GLOBAL_OFFSET_TABLE_ - 1f + MY_GOT_OFFSET> 1097 lnk r26 1098 } 1099 1: 1100 { 1101 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b> 1102 shl16insli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET> 1103 } 1104 { 1105 add r28, r26, r28 1106 shl16insli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b> 1107 } 1108 { 1109 add r27, r26, r27 1110 ld r28, r28 1111 info 10 ## SP not offset, return PC in LR 1112 } 1113 { 1114 shl16insli r29, zero, MY_PLT_INDEX 1115 jr r28 1116 } 1117 1118 This code sequence lets the code at at the start of the PLT determine 1119 which PLT entry was executed by examining 'r29'. 1120 1121 Note that MY_PLT_INDEX skips over the header entries, so the first 1122 actual jump table entry has index zero. 1123 1124 If the offset fits in 16 bits, 1125 1126 lnk r26 1127 1: 1128 { 1129 addli r28, r26, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET> 1130 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b> 1131 } 1132 { 1133 shl16insli r29, zero, MY_PLT_INDEX 1134 ld r28, r28 1135 } 1136 { 1137 add r27, r26, r27 1138 jr r28 1139 } 1140 info 10 ## SP not offset, return PC in LR 1141 1142 For the purpose of backtracing, the procedure linkage table ends with the 1143 following tail entry: 1144 1145 info 10 ## SP not offset, return PC in LR 1146 1147 The 32-bit versions are similar, with ld4s replacing ld, and offsets into 1148 the GOT being multiples of 4 instead of 8. 1149 1150 */ 1151 1152 #define PLT_HEADER_SIZE_IN_BUNDLES 3 1153 #define PLT_ENTRY_SIZE_IN_BUNDLES 5 1154 #define PLT_TAIL_SIZE_IN_BUNDLES 1 1155 1156 #define PLT_HEADER_SIZE \ 1157 (PLT_HEADER_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES) 1158 #define PLT_ENTRY_SIZE \ 1159 (PLT_ENTRY_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES) 1160 #define PLT_TAIL_SIZE \ 1161 (PLT_TAIL_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES) 1162 1163 #define GOT_ENTRY_SIZE(htab) TILEGX_ELF_WORD_BYTES (htab) 1164 1165 #define GOTPLT_HEADER_SIZE(htab) (2 * GOT_ENTRY_SIZE (htab)) 1166 1167 static const bfd_byte 1168 tilegx64_plt0_entry[PLT_HEADER_SIZE] = 1169 { 1170 0x00, 0x30, 0x48, 0x51, 1171 0x6e, 0x43, 0xa0, 0x18, /* { ld_add r28, r27, 8 } */ 1172 0x00, 0x30, 0xbc, 0x35, 1173 0x00, 0x40, 0xde, 0x9e, /* { ld r27, r27 } */ 1174 0xff, 0xaf, 0x30, 0x40, 1175 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */ 1176 }; 1177 1178 static const bfd_byte 1179 tilegx64_long_plt_entry[PLT_ENTRY_SIZE] = 1180 { 1181 0xdc, 0x0f, 0x00, 0x10, 1182 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */ 1183 0xdb, 0x0f, 0x00, 0x10, 1184 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */ 1185 0x9c, 0xc6, 0x0d, 0xd0, 1186 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */ 1187 0x9b, 0xb6, 0xc5, 0xad, 1188 0xff, 0x57, 0xe0, 0x8e, /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */ 1189 0xdd, 0x0f, 0x00, 0x70, 1190 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */ 1191 }; 1192 1193 static const bfd_byte 1194 tilegx64_short_plt_entry[PLT_ENTRY_SIZE] = 1195 { 1196 0x00, 0x30, 0x48, 0x51, 1197 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */ 1198 0x9c, 0x06, 0x00, 0x90, 1199 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */ 1200 0xdd, 0x0f, 0x00, 0x70, 1201 0x8e, 0xeb, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld r28, r28 } */ 1202 0x9b, 0xb6, 0x0d, 0x50, 1203 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */ 1204 0x00, 0x30, 0x48, 0xd1, 1205 0xff, 0x57, 0x18, 0x18, /* { info 10 } */ 1206 }; 1207 1208 /* Reuse an existing info 10 bundle. */ 1209 static const bfd_byte const *tilegx64_plt_tail_entry = 1210 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES]; 1211 1212 static const bfd_byte 1213 tilegx32_plt0_entry[PLT_HEADER_SIZE] = 1214 { 1215 0x00, 0x30, 0x48, 0x51, 1216 0x6e, 0x23, 0x58, 0x18, /* { ld4s_add r28, r27, 4 } */ 1217 0x00, 0x30, 0xbc, 0x35, 1218 0x00, 0x40, 0xde, 0x9c, /* { ld4s r27, r27 } */ 1219 0xff, 0xaf, 0x30, 0x40, 1220 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */ 1221 }; 1222 1223 static const bfd_byte 1224 tilegx32_long_plt_entry[PLT_ENTRY_SIZE] = 1225 { 1226 0xdc, 0x0f, 0x00, 0x10, 1227 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */ 1228 0xdb, 0x0f, 0x00, 0x10, 1229 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */ 1230 0x9c, 0xc6, 0x0d, 0xd0, 1231 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */ 1232 0x9b, 0xb6, 0xc5, 0xad, 1233 0xff, 0x57, 0xe0, 0x8c, /* { add r27, r26, r27 ; info 10 ; ld4s r28, r28 } */ 1234 0xdd, 0x0f, 0x00, 0x70, 1235 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */ 1236 }; 1237 1238 static const bfd_byte 1239 tilegx32_short_plt_entry[PLT_ENTRY_SIZE] = 1240 { 1241 0x00, 0x30, 0x48, 0x51, 1242 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */ 1243 0x9c, 0x06, 0x00, 0x90, 1244 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */ 1245 0xdd, 0x0f, 0x00, 0x70, 1246 0x8e, 0x9b, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld4s r28, r28 } */ 1247 0x9b, 0xb6, 0x0d, 0x50, 1248 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */ 1249 0x00, 0x30, 0x48, 0xd1, 1250 0xff, 0x57, 0x18, 0x18, /* { info 10 } */ 1251 }; 1252 1253 /* Reuse an existing info 10 bundle. */ 1254 static const bfd_byte const *tilegx32_plt_tail_entry = 1255 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES]; 1256 1257 static int 1258 tilegx_plt_entry_build (bfd *output_bfd, 1259 struct tilegx_elf_link_hash_table *htab, 1260 asection *splt, asection *sgotplt, 1261 bfd_vma offset, bfd_vma *r_offset) 1262 { 1263 int plt_index = (offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; 1264 int got_offset = (plt_index * GOT_ENTRY_SIZE (htab) 1265 + GOTPLT_HEADER_SIZE (htab)); 1266 tilegx_bundle_bits *pc; 1267 1268 /* Compute the distance from the got entry to the lnk. */ 1269 bfd_signed_vma dist_got_entry = sgotplt->output_section->vma 1270 + sgotplt->output_offset 1271 + got_offset 1272 - splt->output_section->vma 1273 - splt->output_offset 1274 - offset 1275 - TILEGX_BUNDLE_SIZE_IN_BYTES; 1276 1277 /* Compute the distance to GOTPLT[0]. */ 1278 bfd_signed_vma dist_got0 = dist_got_entry - got_offset; 1279 1280 /* Check whether we can use the short plt entry with 16-bit offset. */ 1281 bfd_boolean short_plt_entry = 1282 (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000); 1283 1284 const tilegx_bundle_bits *plt_entry = (tilegx_bundle_bits *) 1285 (ABI_64_P (output_bfd) ? 1286 (short_plt_entry ? tilegx64_short_plt_entry : tilegx64_long_plt_entry) : 1287 (short_plt_entry ? tilegx32_short_plt_entry : tilegx32_long_plt_entry)); 1288 1289 /* Copy the plt entry template. */ 1290 memcpy (splt->contents + offset, plt_entry, PLT_ENTRY_SIZE); 1291 1292 /* Write the immediate offsets. */ 1293 pc = (tilegx_bundle_bits *)(splt->contents + offset); 1294 1295 if (short_plt_entry) 1296 { 1297 /* { lnk r28 } */ 1298 pc++; 1299 1300 /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; moveli r27, &GOTPLT[0] } */ 1301 *pc++ |= create_Imm16_X0 (dist_got_entry) 1302 | create_Imm16_X1 (dist_got0); 1303 1304 /* { shl16insli r29, zero, MY_PLT_INDEX ; ld r28, r28 } */ 1305 *pc++ |= create_Imm16_X0 (plt_index); 1306 } 1307 else 1308 { 1309 /* { moveli r28, &GOTPLT[MY_GOT_INDEX] ; lnk r26 } */ 1310 *pc++ |= create_Imm16_X0 (dist_got_entry >> 16); 1311 1312 /* { moveli r27, &GOTPLT[0] ; 1313 shl16insli r28, r28, &GOTPLT[MY_GOT_INDEX] } */ 1314 *pc++ |= create_Imm16_X0 (dist_got0 >> 16) 1315 | create_Imm16_X1 (dist_got_entry); 1316 1317 /* { add r28, r26, r28 ; shl16insli r27, r27, &GOTPLT[0] } */ 1318 *pc++ |= create_Imm16_X1 (dist_got0); 1319 1320 /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */ 1321 pc++; 1322 1323 /* { shl16insli r29, zero, MY_GOT_INDEX ; jr r28 } */ 1324 *pc++ |= create_Imm16_X0 (plt_index); 1325 } 1326 1327 /* Set the relocation offset. */ 1328 *r_offset = got_offset; 1329 1330 return plt_index; 1331 } 1332 1333 /* Create an entry in an TILEGX ELF linker hash table. */ 1334 1335 static struct bfd_hash_entry * 1336 link_hash_newfunc (struct bfd_hash_entry *entry, 1337 struct bfd_hash_table *table, const char *string) 1338 { 1339 /* Allocate the structure if it has not already been allocated by a 1340 subclass. */ 1341 if (entry == NULL) 1342 { 1343 entry = 1344 bfd_hash_allocate (table, 1345 sizeof (struct tilegx_elf_link_hash_entry)); 1346 if (entry == NULL) 1347 return entry; 1348 } 1349 1350 /* Call the allocation method of the superclass. */ 1351 entry = _bfd_elf_link_hash_newfunc (entry, table, string); 1352 if (entry != NULL) 1353 { 1354 struct tilegx_elf_link_hash_entry *eh; 1355 1356 eh = (struct tilegx_elf_link_hash_entry *) entry; 1357 eh->dyn_relocs = NULL; 1358 eh->tls_type = GOT_UNKNOWN; 1359 } 1360 1361 return entry; 1362 } 1363 1364 /* Create a TILEGX ELF linker hash table. */ 1365 1366 struct bfd_link_hash_table * 1367 tilegx_elf_link_hash_table_create (bfd *abfd) 1368 { 1369 struct tilegx_elf_link_hash_table *ret; 1370 bfd_size_type amt = sizeof (struct tilegx_elf_link_hash_table); 1371 1372 ret = (struct tilegx_elf_link_hash_table *) bfd_zmalloc (amt); 1373 if (ret == NULL) 1374 return NULL; 1375 1376 #ifdef BFD64 1377 if (ABI_64_P (abfd)) 1378 { 1379 ret->bytes_per_word = 8; 1380 ret->word_align_power = 3; 1381 ret->bytes_per_rela = sizeof (Elf64_External_Rela); 1382 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF64; 1383 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD64; 1384 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF64; 1385 ret->r_info = tilegx_elf_r_info_64; 1386 ret->r_symndx = tilegx_elf_r_symndx_64; 1387 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER; 1388 ret->put_word = tilegx_put_word_64; 1389 } 1390 else 1391 #endif 1392 { 1393 ret->bytes_per_word = 4; 1394 ret->word_align_power = 2; 1395 ret->bytes_per_rela = sizeof (Elf32_External_Rela); 1396 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF32; 1397 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD32; 1398 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF32; 1399 ret->r_info = tilegx_elf_r_info_32; 1400 ret->r_symndx = tilegx_elf_r_symndx_32; 1401 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER; 1402 ret->put_word = tilegx_put_word_32; 1403 } 1404 1405 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, 1406 sizeof (struct tilegx_elf_link_hash_entry), 1407 TILEGX_ELF_DATA)) 1408 { 1409 free (ret); 1410 return NULL; 1411 } 1412 1413 return &ret->elf.root; 1414 } 1415 1416 /* Create the .got section. */ 1417 1418 static bfd_boolean 1419 tilegx_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) 1420 { 1421 flagword flags; 1422 asection *s, *s_got; 1423 struct elf_link_hash_entry *h; 1424 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 1425 struct elf_link_hash_table *htab = elf_hash_table (info); 1426 1427 /* This function may be called more than once. */ 1428 s = bfd_get_linker_section (abfd, ".got"); 1429 if (s != NULL) 1430 return TRUE; 1431 1432 flags = bed->dynamic_sec_flags; 1433 1434 s = bfd_make_section_anyway_with_flags (abfd, 1435 (bed->rela_plts_and_copies_p 1436 ? ".rela.got" : ".rel.got"), 1437 (bed->dynamic_sec_flags 1438 | SEC_READONLY)); 1439 if (s == NULL 1440 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 1441 return FALSE; 1442 htab->srelgot = s; 1443 1444 s = s_got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); 1445 if (s == NULL 1446 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 1447 return FALSE; 1448 htab->sgot = s; 1449 1450 /* The first bit of the global offset table is the header. */ 1451 s->size += bed->got_header_size; 1452 1453 if (bed->want_got_plt) 1454 { 1455 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); 1456 if (s == NULL 1457 || !bfd_set_section_alignment (abfd, s, 1458 bed->s->log_file_align)) 1459 return FALSE; 1460 htab->sgotplt = s; 1461 1462 /* Reserve room for the header. */ 1463 s->size += GOTPLT_HEADER_SIZE (tilegx_elf_hash_table (info)); 1464 } 1465 1466 if (bed->want_got_sym) 1467 { 1468 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got 1469 section. We don't do this in the linker script because we don't want 1470 to define the symbol if we are not creating a global offset 1471 table. */ 1472 h = _bfd_elf_define_linkage_sym (abfd, info, s_got, 1473 "_GLOBAL_OFFSET_TABLE_"); 1474 elf_hash_table (info)->hgot = h; 1475 if (h == NULL) 1476 return FALSE; 1477 } 1478 1479 return TRUE; 1480 } 1481 1482 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and 1483 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our 1484 hash table. */ 1485 1486 bfd_boolean 1487 tilegx_elf_create_dynamic_sections (bfd *dynobj, 1488 struct bfd_link_info *info) 1489 { 1490 struct tilegx_elf_link_hash_table *htab; 1491 1492 htab = tilegx_elf_hash_table (info); 1493 BFD_ASSERT (htab != NULL); 1494 1495 if (!tilegx_elf_create_got_section (dynobj, info)) 1496 return FALSE; 1497 1498 if (!_bfd_elf_create_dynamic_sections (dynobj, info)) 1499 return FALSE; 1500 1501 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); 1502 if (!info->shared) 1503 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss"); 1504 1505 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss 1506 || (!info->shared && !htab->srelbss)) 1507 abort (); 1508 1509 return TRUE; 1510 } 1511 1512 /* Copy the extra info we tack onto an elf_link_hash_entry. */ 1513 1514 void 1515 tilegx_elf_copy_indirect_symbol (struct bfd_link_info *info, 1516 struct elf_link_hash_entry *dir, 1517 struct elf_link_hash_entry *ind) 1518 { 1519 struct tilegx_elf_link_hash_entry *edir, *eind; 1520 1521 edir = (struct tilegx_elf_link_hash_entry *) dir; 1522 eind = (struct tilegx_elf_link_hash_entry *) ind; 1523 1524 if (eind->dyn_relocs != NULL) 1525 { 1526 if (edir->dyn_relocs != NULL) 1527 { 1528 struct tilegx_elf_dyn_relocs **pp; 1529 struct tilegx_elf_dyn_relocs *p; 1530 1531 /* Add reloc counts against the indirect sym to the direct sym 1532 list. Merge any entries against the same section. */ 1533 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) 1534 { 1535 struct tilegx_elf_dyn_relocs *q; 1536 1537 for (q = edir->dyn_relocs; q != NULL; q = q->next) 1538 if (q->sec == p->sec) 1539 { 1540 q->pc_count += p->pc_count; 1541 q->count += p->count; 1542 *pp = p->next; 1543 break; 1544 } 1545 if (q == NULL) 1546 pp = &p->next; 1547 } 1548 *pp = edir->dyn_relocs; 1549 } 1550 1551 edir->dyn_relocs = eind->dyn_relocs; 1552 eind->dyn_relocs = NULL; 1553 } 1554 1555 if (ind->root.type == bfd_link_hash_indirect 1556 && dir->got.refcount <= 0) 1557 { 1558 edir->tls_type = eind->tls_type; 1559 eind->tls_type = GOT_UNKNOWN; 1560 } 1561 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 1562 } 1563 1564 static int 1565 tilegx_tls_translate_to_le (int r_type) 1566 { 1567 switch (r_type) 1568 { 1569 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 1570 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 1571 return R_TILEGX_IMM16_X0_HW0_TLS_LE; 1572 1573 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 1574 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 1575 return R_TILEGX_IMM16_X1_HW0_TLS_LE; 1576 1577 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 1578 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 1579 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE; 1580 1581 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 1582 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 1583 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE; 1584 1585 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 1586 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 1587 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE; 1588 1589 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 1590 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 1591 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE; 1592 } 1593 return r_type; 1594 } 1595 1596 static int 1597 tilegx_tls_translate_to_ie (int r_type) 1598 { 1599 switch (r_type) 1600 { 1601 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 1602 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 1603 return R_TILEGX_IMM16_X0_HW0_TLS_IE; 1604 1605 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 1606 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 1607 return R_TILEGX_IMM16_X1_HW0_TLS_IE; 1608 1609 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 1610 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 1611 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE; 1612 1613 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 1614 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 1615 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE; 1616 1617 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 1618 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 1619 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE; 1620 1621 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 1622 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 1623 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE; 1624 } 1625 return r_type; 1626 } 1627 1628 static int 1629 tilegx_elf_tls_transition (struct bfd_link_info *info, int r_type, 1630 int is_local, bfd_boolean disable_le_transition) 1631 { 1632 if (info->shared) 1633 return r_type; 1634 1635 if (is_local && !disable_le_transition) 1636 return tilegx_tls_translate_to_le (r_type); 1637 else 1638 return tilegx_tls_translate_to_ie (r_type); 1639 } 1640 1641 /* Look through the relocs for a section during the first phase, and 1642 allocate space in the global offset table or procedure linkage 1643 table. */ 1644 1645 bfd_boolean 1646 tilegx_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, 1647 asection *sec, const Elf_Internal_Rela *relocs) 1648 { 1649 struct tilegx_elf_link_hash_table *htab; 1650 Elf_Internal_Shdr *symtab_hdr; 1651 struct elf_link_hash_entry **sym_hashes; 1652 const Elf_Internal_Rela *rel; 1653 const Elf_Internal_Rela *rel_end; 1654 asection *sreloc; 1655 int num_relocs; 1656 bfd_boolean has_tls_gd_or_ie = FALSE, has_tls_add = FALSE; 1657 1658 if (info->relocatable) 1659 return TRUE; 1660 1661 htab = tilegx_elf_hash_table (info); 1662 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 1663 sym_hashes = elf_sym_hashes (abfd); 1664 1665 sreloc = NULL; 1666 1667 num_relocs = sec->reloc_count; 1668 1669 BFD_ASSERT (is_tilegx_elf (abfd) || num_relocs == 0); 1670 1671 if (htab->elf.dynobj == NULL) 1672 htab->elf.dynobj = abfd; 1673 1674 rel_end = relocs + num_relocs; 1675 1676 /* Check whether to do optimization to transform TLS GD/IE 1677 referehces to TLS LE. We disable it if we're linking with old 1678 TLS code sequences that do not support such optimization. Old 1679 TLS code sequences have tls_gd_call/tls_ie_load relocations but 1680 no tls_add relocations. */ 1681 for (rel = relocs; rel < rel_end && !has_tls_add; rel++) 1682 { 1683 int r_type = TILEGX_ELF_R_TYPE (rel->r_info); 1684 switch (r_type) 1685 { 1686 case R_TILEGX_TLS_GD_CALL: 1687 case R_TILEGX_TLS_IE_LOAD: 1688 has_tls_gd_or_ie = TRUE; 1689 break; 1690 case R_TILEGX_IMM8_X0_TLS_ADD: 1691 case R_TILEGX_IMM8_Y0_TLS_ADD: 1692 case R_TILEGX_IMM8_X1_TLS_ADD: 1693 case R_TILEGX_IMM8_Y1_TLS_ADD: 1694 has_tls_add = TRUE; 1695 break; 1696 } 1697 } 1698 1699 sec->sec_flg0 = (has_tls_gd_or_ie && !has_tls_add); 1700 htab->disable_le_transition |= sec->sec_flg0; 1701 1702 for (rel = relocs; rel < rel_end; rel++) 1703 { 1704 unsigned int r_type; 1705 unsigned long r_symndx; 1706 struct elf_link_hash_entry *h; 1707 int tls_type; 1708 1709 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info); 1710 r_type = TILEGX_ELF_R_TYPE (rel->r_info); 1711 1712 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) 1713 { 1714 (*_bfd_error_handler) (_("%B: bad symbol index: %d"), 1715 abfd, r_symndx); 1716 return FALSE; 1717 } 1718 1719 if (r_symndx < symtab_hdr->sh_info) 1720 h = NULL; 1721 else 1722 { 1723 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 1724 while (h->root.type == bfd_link_hash_indirect 1725 || h->root.type == bfd_link_hash_warning) 1726 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1727 } 1728 1729 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL, 1730 sec->sec_flg0); 1731 switch (r_type) 1732 { 1733 case R_TILEGX_IMM16_X0_HW0_TLS_LE: 1734 case R_TILEGX_IMM16_X1_HW0_TLS_LE: 1735 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE: 1736 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE: 1737 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE: 1738 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE: 1739 if (info->shared) 1740 goto r_tilegx_plt32; 1741 break; 1742 1743 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 1744 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 1745 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 1746 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 1747 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 1748 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 1749 BFD_ASSERT (info->shared); 1750 tls_type = GOT_TLS_GD; 1751 goto have_got_reference; 1752 1753 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 1754 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 1755 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 1756 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 1757 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 1758 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 1759 tls_type = GOT_TLS_IE; 1760 if (info->shared) 1761 info->flags |= DF_STATIC_TLS; 1762 goto have_got_reference; 1763 1764 case R_TILEGX_IMM16_X0_HW0_GOT: 1765 case R_TILEGX_IMM16_X1_HW0_GOT: 1766 case R_TILEGX_IMM16_X0_HW0_LAST_GOT: 1767 case R_TILEGX_IMM16_X1_HW0_LAST_GOT: 1768 case R_TILEGX_IMM16_X0_HW1_LAST_GOT: 1769 case R_TILEGX_IMM16_X1_HW1_LAST_GOT: 1770 tls_type = GOT_NORMAL; 1771 /* Fall Through */ 1772 1773 have_got_reference: 1774 /* This symbol requires a global offset table entry. */ 1775 { 1776 int old_tls_type; 1777 1778 if (h != NULL) 1779 { 1780 h->got.refcount += 1; 1781 old_tls_type = tilegx_elf_hash_entry(h)->tls_type; 1782 } 1783 else 1784 { 1785 bfd_signed_vma *local_got_refcounts; 1786 1787 /* This is a global offset table entry for a local symbol. */ 1788 local_got_refcounts = elf_local_got_refcounts (abfd); 1789 if (local_got_refcounts == NULL) 1790 { 1791 bfd_size_type size; 1792 1793 size = symtab_hdr->sh_info; 1794 size *= (sizeof (bfd_signed_vma) + sizeof(char)); 1795 local_got_refcounts = ((bfd_signed_vma *) 1796 bfd_zalloc (abfd, size)); 1797 if (local_got_refcounts == NULL) 1798 return FALSE; 1799 elf_local_got_refcounts (abfd) = local_got_refcounts; 1800 _bfd_tilegx_elf_local_got_tls_type (abfd) 1801 = (char *) (local_got_refcounts + symtab_hdr->sh_info); 1802 } 1803 local_got_refcounts[r_symndx] += 1; 1804 old_tls_type = _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx]; 1805 } 1806 1807 /* If a TLS symbol is accessed using IE at least once, 1808 there is no point to use dynamic model for it. */ 1809 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN 1810 && (old_tls_type != GOT_TLS_GD 1811 || tls_type != GOT_TLS_IE)) 1812 { 1813 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD) 1814 tls_type = old_tls_type; 1815 else 1816 { 1817 (*_bfd_error_handler) 1818 (_("%B: `%s' accessed both as normal and thread local symbol"), 1819 abfd, h ? h->root.root.string : "<local>"); 1820 return FALSE; 1821 } 1822 } 1823 1824 if (old_tls_type != tls_type) 1825 { 1826 if (h != NULL) 1827 tilegx_elf_hash_entry (h)->tls_type = tls_type; 1828 else 1829 _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx] = tls_type; 1830 } 1831 } 1832 1833 if (htab->elf.sgot == NULL) 1834 { 1835 if (!tilegx_elf_create_got_section (htab->elf.dynobj, info)) 1836 return FALSE; 1837 } 1838 break; 1839 1840 case R_TILEGX_TLS_GD_CALL: 1841 if (info->shared) 1842 { 1843 /* These are basically R_TILEGX_JUMPOFF_X1_PLT relocs 1844 against __tls_get_addr. */ 1845 struct bfd_link_hash_entry *bh = NULL; 1846 if (! _bfd_generic_link_add_one_symbol (info, abfd, 1847 "__tls_get_addr", 0, 1848 bfd_und_section_ptr, 0, 1849 NULL, FALSE, FALSE, 1850 &bh)) 1851 return FALSE; 1852 h = (struct elf_link_hash_entry *) bh; 1853 } 1854 else 1855 break; 1856 /* Fall through */ 1857 1858 case R_TILEGX_JUMPOFF_X1_PLT: 1859 /* This symbol requires a procedure linkage table entry. We 1860 actually build the entry in adjust_dynamic_symbol, 1861 because this might be a case of linking PIC code without 1862 linking in any dynamic objects, in which case we don't 1863 need to generate a procedure linkage table after all. */ 1864 1865 if (h != NULL) 1866 { 1867 h->needs_plt = 1; 1868 h->plt.refcount += 1; 1869 } 1870 break; 1871 1872 case R_TILEGX_64_PCREL: 1873 case R_TILEGX_32_PCREL: 1874 case R_TILEGX_16_PCREL: 1875 case R_TILEGX_8_PCREL: 1876 case R_TILEGX_IMM16_X0_HW0_PCREL: 1877 case R_TILEGX_IMM16_X1_HW0_PCREL: 1878 case R_TILEGX_IMM16_X0_HW1_PCREL: 1879 case R_TILEGX_IMM16_X1_HW1_PCREL: 1880 case R_TILEGX_IMM16_X0_HW2_PCREL: 1881 case R_TILEGX_IMM16_X1_HW2_PCREL: 1882 case R_TILEGX_IMM16_X0_HW3_PCREL: 1883 case R_TILEGX_IMM16_X1_HW3_PCREL: 1884 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL: 1885 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL: 1886 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL: 1887 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL: 1888 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL: 1889 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL: 1890 if (h != NULL) 1891 h->non_got_ref = 1; 1892 1893 if (h != NULL 1894 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 1895 break; 1896 /* Fall through. */ 1897 1898 case R_TILEGX_64: 1899 case R_TILEGX_32: 1900 case R_TILEGX_16: 1901 case R_TILEGX_8: 1902 case R_TILEGX_HW0: 1903 case R_TILEGX_HW1: 1904 case R_TILEGX_HW2: 1905 case R_TILEGX_HW3: 1906 case R_TILEGX_HW0_LAST: 1907 case R_TILEGX_HW1_LAST: 1908 case R_TILEGX_HW2_LAST: 1909 case R_TILEGX_COPY: 1910 case R_TILEGX_GLOB_DAT: 1911 case R_TILEGX_JMP_SLOT: 1912 case R_TILEGX_RELATIVE: 1913 case R_TILEGX_BROFF_X1: 1914 case R_TILEGX_JUMPOFF_X1: 1915 case R_TILEGX_IMM8_X0: 1916 case R_TILEGX_IMM8_Y0: 1917 case R_TILEGX_IMM8_X1: 1918 case R_TILEGX_IMM8_Y1: 1919 case R_TILEGX_DEST_IMM8_X1: 1920 case R_TILEGX_MT_IMM14_X1: 1921 case R_TILEGX_MF_IMM14_X1: 1922 case R_TILEGX_MMSTART_X0: 1923 case R_TILEGX_MMEND_X0: 1924 case R_TILEGX_SHAMT_X0: 1925 case R_TILEGX_SHAMT_X1: 1926 case R_TILEGX_SHAMT_Y0: 1927 case R_TILEGX_SHAMT_Y1: 1928 case R_TILEGX_IMM16_X0_HW0: 1929 case R_TILEGX_IMM16_X1_HW0: 1930 case R_TILEGX_IMM16_X0_HW1: 1931 case R_TILEGX_IMM16_X1_HW1: 1932 case R_TILEGX_IMM16_X0_HW2: 1933 case R_TILEGX_IMM16_X1_HW2: 1934 case R_TILEGX_IMM16_X0_HW3: 1935 case R_TILEGX_IMM16_X1_HW3: 1936 case R_TILEGX_IMM16_X0_HW0_LAST: 1937 case R_TILEGX_IMM16_X1_HW0_LAST: 1938 case R_TILEGX_IMM16_X0_HW1_LAST: 1939 case R_TILEGX_IMM16_X1_HW1_LAST: 1940 case R_TILEGX_IMM16_X0_HW2_LAST: 1941 case R_TILEGX_IMM16_X1_HW2_LAST: 1942 if (h != NULL) 1943 h->non_got_ref = 1; 1944 1945 r_tilegx_plt32: 1946 if (h != NULL && !info->shared) 1947 { 1948 /* We may need a .plt entry if the function this reloc 1949 refers to is in a shared lib. */ 1950 h->plt.refcount += 1; 1951 } 1952 1953 /* If we are creating a shared library, and this is a reloc 1954 against a global symbol, or a non PC relative reloc 1955 against a local symbol, then we need to copy the reloc 1956 into the shared library. However, if we are linking with 1957 -Bsymbolic, we do not need to copy a reloc against a 1958 global symbol which is defined in an object we are 1959 including in the link (i.e., DEF_REGULAR is set). At 1960 this point we have not seen all the input files, so it is 1961 possible that DEF_REGULAR is not set now but will be set 1962 later (it is never cleared). In case of a weak definition, 1963 DEF_REGULAR may be cleared later by a strong definition in 1964 a shared library. We account for that possibility below by 1965 storing information in the relocs_copied field of the hash 1966 table entry. A similar situation occurs when creating 1967 shared libraries and symbol visibility changes render the 1968 symbol local. 1969 1970 If on the other hand, we are creating an executable, we 1971 may need to keep relocations for symbols satisfied by a 1972 dynamic library if we manage to avoid copy relocs for the 1973 symbol. */ 1974 if ((info->shared 1975 && (sec->flags & SEC_ALLOC) != 0 1976 && (! tilegx_elf_howto_table[r_type].pc_relative 1977 || (h != NULL 1978 && (! info->symbolic 1979 || h->root.type == bfd_link_hash_defweak 1980 || !h->def_regular)))) 1981 || (!info->shared 1982 && (sec->flags & SEC_ALLOC) != 0 1983 && h != NULL 1984 && (h->root.type == bfd_link_hash_defweak 1985 || !h->def_regular))) 1986 { 1987 struct tilegx_elf_dyn_relocs *p; 1988 struct tilegx_elf_dyn_relocs **head; 1989 1990 /* When creating a shared object, we must copy these 1991 relocs into the output file. We create a reloc 1992 section in dynobj and make room for the reloc. */ 1993 if (sreloc == NULL) 1994 { 1995 sreloc = _bfd_elf_make_dynamic_reloc_section 1996 (sec, htab->elf.dynobj, htab->word_align_power, abfd, 1997 /*rela?*/ TRUE); 1998 1999 if (sreloc == NULL) 2000 return FALSE; 2001 } 2002 2003 /* If this is a global symbol, we count the number of 2004 relocations we need for this symbol. */ 2005 if (h != NULL) 2006 head = 2007 &((struct tilegx_elf_link_hash_entry *) h)->dyn_relocs; 2008 else 2009 { 2010 /* Track dynamic relocs needed for local syms too. 2011 We really need local syms available to do this 2012 easily. Oh well. */ 2013 2014 asection *s; 2015 void *vpp; 2016 Elf_Internal_Sym *isym; 2017 2018 isym = bfd_sym_from_r_symndx (&htab->sym_cache, 2019 abfd, r_symndx); 2020 if (isym == NULL) 2021 return FALSE; 2022 2023 s = bfd_section_from_elf_index (abfd, isym->st_shndx); 2024 if (s == NULL) 2025 s = sec; 2026 2027 vpp = &elf_section_data (s)->local_dynrel; 2028 head = (struct tilegx_elf_dyn_relocs **) vpp; 2029 } 2030 2031 p = *head; 2032 if (p == NULL || p->sec != sec) 2033 { 2034 bfd_size_type amt = sizeof *p; 2035 p = ((struct tilegx_elf_dyn_relocs *) 2036 bfd_alloc (htab->elf.dynobj, amt)); 2037 if (p == NULL) 2038 return FALSE; 2039 p->next = *head; 2040 *head = p; 2041 p->sec = sec; 2042 p->count = 0; 2043 p->pc_count = 0; 2044 } 2045 2046 p->count += 1; 2047 if (tilegx_elf_howto_table[r_type].pc_relative) 2048 p->pc_count += 1; 2049 } 2050 2051 break; 2052 2053 case R_TILEGX_GNU_VTINHERIT: 2054 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 2055 return FALSE; 2056 break; 2057 2058 case R_TILEGX_GNU_VTENTRY: 2059 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 2060 return FALSE; 2061 break; 2062 2063 default: 2064 break; 2065 } 2066 } 2067 2068 return TRUE; 2069 } 2070 2071 2072 asection * 2074 tilegx_elf_gc_mark_hook (asection *sec, 2075 struct bfd_link_info *info, 2076 Elf_Internal_Rela *rel, 2077 struct elf_link_hash_entry *h, 2078 Elf_Internal_Sym *sym) 2079 { 2080 if (h != NULL) 2081 { 2082 switch (TILEGX_ELF_R_TYPE (rel->r_info)) 2083 { 2084 case R_TILEGX_GNU_VTINHERIT: 2085 case R_TILEGX_GNU_VTENTRY: 2086 return NULL; 2087 } 2088 } 2089 2090 /* FIXME: The test here, in check_relocs and in relocate_section 2091 dealing with TLS optimization, ought to be !info->executable. */ 2092 if (info->shared) 2093 { 2094 switch (TILEGX_ELF_R_TYPE (rel->r_info)) 2095 { 2096 case R_TILEGX_TLS_GD_CALL: 2097 /* This reloc implicitly references __tls_get_addr. We know 2098 another reloc will reference the same symbol as the one 2099 on this reloc, so the real symbol and section will be 2100 gc marked when processing the other reloc. That lets 2101 us handle __tls_get_addr here. */ 2102 h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr", 2103 FALSE, FALSE, TRUE); 2104 BFD_ASSERT (h != NULL); 2105 h->mark = 1; 2106 if (h->u.weakdef != NULL) 2107 h->u.weakdef->mark = 1; 2108 sym = NULL; 2109 } 2110 } 2111 2112 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 2113 } 2114 2115 /* Update the got entry reference counts for the section being removed. */ 2116 bfd_boolean 2117 tilegx_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, 2118 asection *sec, const Elf_Internal_Rela *relocs) 2119 { 2120 struct tilegx_elf_link_hash_table *htab; 2121 Elf_Internal_Shdr *symtab_hdr; 2122 struct elf_link_hash_entry **sym_hashes; 2123 bfd_signed_vma *local_got_refcounts; 2124 const Elf_Internal_Rela *rel, *relend; 2125 2126 if (info->relocatable) 2127 return TRUE; 2128 2129 BFD_ASSERT (is_tilegx_elf (abfd) || sec->reloc_count == 0); 2130 2131 elf_section_data (sec)->local_dynrel = NULL; 2132 2133 htab = tilegx_elf_hash_table (info); 2134 BFD_ASSERT (htab != NULL); 2135 symtab_hdr = &elf_symtab_hdr (abfd); 2136 sym_hashes = elf_sym_hashes (abfd); 2137 local_got_refcounts = elf_local_got_refcounts (abfd); 2138 2139 relend = relocs + sec->reloc_count; 2140 for (rel = relocs; rel < relend; rel++) 2141 { 2142 unsigned long r_symndx; 2143 unsigned int r_type; 2144 struct elf_link_hash_entry *h = NULL; 2145 2146 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info); 2147 if (r_symndx >= symtab_hdr->sh_info) 2148 { 2149 struct tilegx_elf_link_hash_entry *eh; 2150 struct tilegx_elf_dyn_relocs **pp; 2151 struct tilegx_elf_dyn_relocs *p; 2152 2153 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 2154 while (h->root.type == bfd_link_hash_indirect 2155 || h->root.type == bfd_link_hash_warning) 2156 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2157 eh = (struct tilegx_elf_link_hash_entry *) h; 2158 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) 2159 if (p->sec == sec) 2160 { 2161 /* Everything must go for SEC. */ 2162 *pp = p->next; 2163 break; 2164 } 2165 } 2166 2167 r_type = TILEGX_ELF_R_TYPE (rel->r_info); 2168 r_type = tilegx_elf_tls_transition (info, r_type, h != NULL, 2169 sec->sec_flg0); 2170 switch (r_type) 2171 { 2172 case R_TILEGX_IMM16_X0_HW0_GOT: 2173 case R_TILEGX_IMM16_X1_HW0_GOT: 2174 case R_TILEGX_IMM16_X0_HW0_LAST_GOT: 2175 case R_TILEGX_IMM16_X1_HW0_LAST_GOT: 2176 case R_TILEGX_IMM16_X0_HW1_LAST_GOT: 2177 case R_TILEGX_IMM16_X1_HW1_LAST_GOT: 2178 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 2179 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 2180 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 2181 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 2182 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 2183 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 2184 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 2185 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 2186 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 2187 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 2188 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 2189 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 2190 if (h != NULL) 2191 { 2192 if (h->got.refcount > 0) 2193 h->got.refcount--; 2194 } 2195 else 2196 { 2197 if (local_got_refcounts && 2198 local_got_refcounts[r_symndx] > 0) 2199 local_got_refcounts[r_symndx]--; 2200 } 2201 break; 2202 2203 case R_TILEGX_64_PCREL: 2204 case R_TILEGX_32_PCREL: 2205 case R_TILEGX_16_PCREL: 2206 case R_TILEGX_8_PCREL: 2207 case R_TILEGX_IMM16_X0_HW0_PCREL: 2208 case R_TILEGX_IMM16_X1_HW0_PCREL: 2209 case R_TILEGX_IMM16_X0_HW1_PCREL: 2210 case R_TILEGX_IMM16_X1_HW1_PCREL: 2211 case R_TILEGX_IMM16_X0_HW2_PCREL: 2212 case R_TILEGX_IMM16_X1_HW2_PCREL: 2213 case R_TILEGX_IMM16_X0_HW3_PCREL: 2214 case R_TILEGX_IMM16_X1_HW3_PCREL: 2215 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL: 2216 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL: 2217 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL: 2218 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL: 2219 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL: 2220 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL: 2221 if (h != NULL 2222 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 2223 break; 2224 /* Fall through. */ 2225 2226 case R_TILEGX_64: 2227 case R_TILEGX_32: 2228 case R_TILEGX_16: 2229 case R_TILEGX_8: 2230 case R_TILEGX_HW0: 2231 case R_TILEGX_HW1: 2232 case R_TILEGX_HW2: 2233 case R_TILEGX_HW3: 2234 case R_TILEGX_HW0_LAST: 2235 case R_TILEGX_HW1_LAST: 2236 case R_TILEGX_HW2_LAST: 2237 case R_TILEGX_COPY: 2238 case R_TILEGX_GLOB_DAT: 2239 case R_TILEGX_JMP_SLOT: 2240 case R_TILEGX_RELATIVE: 2241 case R_TILEGX_BROFF_X1: 2242 case R_TILEGX_JUMPOFF_X1: 2243 case R_TILEGX_IMM8_X0: 2244 case R_TILEGX_IMM8_Y0: 2245 case R_TILEGX_IMM8_X1: 2246 case R_TILEGX_IMM8_Y1: 2247 case R_TILEGX_DEST_IMM8_X1: 2248 case R_TILEGX_MT_IMM14_X1: 2249 case R_TILEGX_MF_IMM14_X1: 2250 case R_TILEGX_MMSTART_X0: 2251 case R_TILEGX_MMEND_X0: 2252 case R_TILEGX_SHAMT_X0: 2253 case R_TILEGX_SHAMT_X1: 2254 case R_TILEGX_SHAMT_Y0: 2255 case R_TILEGX_SHAMT_Y1: 2256 case R_TILEGX_IMM16_X0_HW0: 2257 case R_TILEGX_IMM16_X1_HW0: 2258 case R_TILEGX_IMM16_X0_HW1: 2259 case R_TILEGX_IMM16_X1_HW1: 2260 case R_TILEGX_IMM16_X0_HW2: 2261 case R_TILEGX_IMM16_X1_HW2: 2262 case R_TILEGX_IMM16_X0_HW3: 2263 case R_TILEGX_IMM16_X1_HW3: 2264 case R_TILEGX_IMM16_X0_HW0_LAST: 2265 case R_TILEGX_IMM16_X1_HW0_LAST: 2266 case R_TILEGX_IMM16_X0_HW1_LAST: 2267 case R_TILEGX_IMM16_X1_HW1_LAST: 2268 case R_TILEGX_IMM16_X0_HW2_LAST: 2269 case R_TILEGX_IMM16_X1_HW2_LAST: 2270 if (info->shared) 2271 break; 2272 /* Fall through. */ 2273 2274 case R_TILEGX_JUMPOFF_X1_PLT: 2275 if (h != NULL) 2276 { 2277 if (h->plt.refcount > 0) 2278 h->plt.refcount--; 2279 } 2280 break; 2281 2282 default: 2283 break; 2284 } 2285 } 2286 2287 return TRUE; 2288 } 2289 2290 /* Adjust a symbol defined by a dynamic object and referenced by a 2291 regular object. The current definition is in some section of the 2292 dynamic object, but we're not including those sections. We have to 2293 change the definition to something the rest of the link can 2294 understand. */ 2295 2296 bfd_boolean 2297 tilegx_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 2298 struct elf_link_hash_entry *h) 2299 { 2300 struct tilegx_elf_link_hash_table *htab; 2301 struct tilegx_elf_link_hash_entry * eh; 2302 struct tilegx_elf_dyn_relocs *p; 2303 bfd *dynobj; 2304 asection *s; 2305 2306 htab = tilegx_elf_hash_table (info); 2307 BFD_ASSERT (htab != NULL); 2308 2309 dynobj = htab->elf.dynobj; 2310 2311 /* Make sure we know what is going on here. */ 2312 BFD_ASSERT (dynobj != NULL 2313 && (h->needs_plt 2314 || h->u.weakdef != NULL 2315 || (h->def_dynamic 2316 && h->ref_regular 2317 && !h->def_regular))); 2318 2319 /* If this is a function, put it in the procedure linkage table. We 2320 will fill in the contents of the procedure linkage table later 2321 (although we could actually do it here). */ 2322 if (h->type == STT_FUNC || h->needs_plt) 2323 { 2324 if (h->plt.refcount <= 0 2325 || SYMBOL_CALLS_LOCAL (info, h) 2326 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT 2327 && h->root.type == bfd_link_hash_undefweak)) 2328 { 2329 /* This case can occur if we saw a R_TILEGX_JUMPOFF_X1_PLT 2330 reloc in an input file, but the symbol was never referred 2331 to by a dynamic object, or if all references were garbage 2332 collected. In such a case, we don't actually need to build 2333 a procedure linkage table, and we can just do a 2334 R_TILEGX_JUMPOFF_X1 relocation instead. */ 2335 h->plt.offset = (bfd_vma) -1; 2336 h->needs_plt = 0; 2337 } 2338 2339 return TRUE; 2340 } 2341 else 2342 h->plt.offset = (bfd_vma) -1; 2343 2344 /* If this is a weak symbol, and there is a real definition, the 2345 processor independent code will have arranged for us to see the 2346 real definition first, and we can just use the same value. */ 2347 if (h->u.weakdef != NULL) 2348 { 2349 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 2350 || h->u.weakdef->root.type == bfd_link_hash_defweak); 2351 h->root.u.def.section = h->u.weakdef->root.u.def.section; 2352 h->root.u.def.value = h->u.weakdef->root.u.def.value; 2353 return TRUE; 2354 } 2355 2356 /* This is a reference to a symbol defined by a dynamic object which 2357 is not a function. */ 2358 2359 /* If we are creating a shared library, we must presume that the 2360 only references to the symbol are via the global offset table. 2361 For such cases we need not do anything here; the relocations will 2362 be handled correctly by relocate_section. */ 2363 if (info->shared) 2364 return TRUE; 2365 2366 /* If there are no references to this symbol that do not use the 2367 GOT, we don't need to generate a copy reloc. */ 2368 if (!h->non_got_ref) 2369 return TRUE; 2370 2371 /* If -z nocopyreloc was given, we won't generate them either. */ 2372 if (info->nocopyreloc) 2373 { 2374 h->non_got_ref = 0; 2375 return TRUE; 2376 } 2377 2378 eh = (struct tilegx_elf_link_hash_entry *) h; 2379 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2380 { 2381 s = p->sec->output_section; 2382 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2383 break; 2384 } 2385 2386 /* If we didn't find any dynamic relocs in read-only sections, then 2387 we'll be keeping the dynamic relocs and avoiding the copy reloc. */ 2388 if (p == NULL) 2389 { 2390 h->non_got_ref = 0; 2391 return TRUE; 2392 } 2393 2394 /* We must allocate the symbol in our .dynbss section, which will 2395 become part of the .bss section of the executable. There will be 2396 an entry for this symbol in the .dynsym section. The dynamic 2397 object will contain position independent code, so all references 2398 from the dynamic object to this symbol will go through the global 2399 offset table. The dynamic linker will use the .dynsym entry to 2400 determine the address it must put in the global offset table, so 2401 both the dynamic object and the regular object will refer to the 2402 same memory location for the variable. */ 2403 2404 /* We must generate a R_TILEGX_COPY reloc to tell the dynamic linker 2405 to copy the initial value out of the dynamic object and into the 2406 runtime process image. We need to remember the offset into the 2407 .rel.bss section we are going to use. */ 2408 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) 2409 { 2410 htab->srelbss->size += TILEGX_ELF_RELA_BYTES (htab); 2411 h->needs_copy = 1; 2412 } 2413 2414 return _bfd_elf_adjust_dynamic_copy (h, htab->sdynbss); 2415 } 2416 2417 /* Allocate space in .plt, .got and associated reloc sections for 2418 dynamic relocs. */ 2419 2420 static bfd_boolean 2421 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) 2422 { 2423 struct bfd_link_info *info; 2424 struct tilegx_elf_link_hash_table *htab; 2425 struct tilegx_elf_link_hash_entry *eh; 2426 struct tilegx_elf_dyn_relocs *p; 2427 2428 if (h->root.type == bfd_link_hash_indirect) 2429 return TRUE; 2430 2431 info = (struct bfd_link_info *) inf; 2432 htab = tilegx_elf_hash_table (info); 2433 BFD_ASSERT (htab != NULL); 2434 2435 if (htab->elf.dynamic_sections_created 2436 && h->plt.refcount > 0) 2437 { 2438 /* Make sure this symbol is output as a dynamic symbol. 2439 Undefined weak syms won't yet be marked as dynamic. */ 2440 if (h->dynindx == -1 2441 && !h->forced_local) 2442 { 2443 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2444 return FALSE; 2445 } 2446 2447 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) 2448 { 2449 asection *s = htab->elf.splt; 2450 2451 /* Allocate room for the header and tail. */ 2452 if (s->size == 0) 2453 { 2454 s->size = PLT_HEADER_SIZE + PLT_TAIL_SIZE; 2455 } 2456 2457 h->plt.offset = s->size - PLT_TAIL_SIZE; 2458 2459 /* If this symbol is not defined in a regular file, and we are 2460 not generating a shared library, then set the symbol to this 2461 location in the .plt. This is required to make function 2462 pointers compare as equal between the normal executable and 2463 the shared library. */ 2464 if (! info->shared 2465 && !h->def_regular) 2466 { 2467 h->root.u.def.section = s; 2468 h->root.u.def.value = h->plt.offset; 2469 } 2470 2471 /* Make room for this entry. */ 2472 s->size += PLT_ENTRY_SIZE; 2473 2474 /* We also need to make an entry in the .got.plt section. */ 2475 htab->elf.sgotplt->size += GOT_ENTRY_SIZE (htab); 2476 2477 /* We also need to make an entry in the .rela.plt section. */ 2478 htab->elf.srelplt->size += TILEGX_ELF_RELA_BYTES (htab); 2479 } 2480 else 2481 { 2482 h->plt.offset = (bfd_vma) -1; 2483 h->needs_plt = 0; 2484 } 2485 } 2486 else 2487 { 2488 h->plt.offset = (bfd_vma) -1; 2489 h->needs_plt = 0; 2490 } 2491 2492 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE 2493 requiring no TLS entry. */ 2494 if (h->got.refcount > 0 2495 && !htab->disable_le_transition 2496 && !info->shared 2497 && h->dynindx == -1 2498 && tilegx_elf_hash_entry(h)->tls_type == GOT_TLS_IE) 2499 h->got.offset = (bfd_vma) -1; 2500 else if (h->got.refcount > 0) 2501 { 2502 asection *s; 2503 bfd_boolean dyn; 2504 int tls_type = tilegx_elf_hash_entry(h)->tls_type; 2505 2506 /* Make sure this symbol is output as a dynamic symbol. 2507 Undefined weak syms won't yet be marked as dynamic. */ 2508 if (h->dynindx == -1 2509 && !h->forced_local) 2510 { 2511 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2512 return FALSE; 2513 } 2514 2515 s = htab->elf.sgot; 2516 h->got.offset = s->size; 2517 s->size += TILEGX_ELF_WORD_BYTES (htab); 2518 /* TLS_GD entries need 2 consecutive GOT slots. */ 2519 if (tls_type == GOT_TLS_GD) 2520 s->size += TILEGX_ELF_WORD_BYTES (htab); 2521 dyn = htab->elf.dynamic_sections_created; 2522 /* TLS_IE needs one dynamic relocation, 2523 TLS_GD needs two if local symbol and two if global. */ 2524 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE) 2525 htab->elf.srelgot->size += 2 * TILEGX_ELF_RELA_BYTES (htab); 2526 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)) 2527 htab->elf.srelgot->size += TILEGX_ELF_RELA_BYTES (htab); 2528 } 2529 else 2530 h->got.offset = (bfd_vma) -1; 2531 2532 eh = (struct tilegx_elf_link_hash_entry *) h; 2533 if (eh->dyn_relocs == NULL) 2534 return TRUE; 2535 2536 /* In the shared -Bsymbolic case, discard space allocated for 2537 dynamic pc-relative relocs against symbols which turn out to be 2538 defined in regular objects. For the normal shared case, discard 2539 space for pc-relative relocs that have become local due to symbol 2540 visibility changes. */ 2541 2542 if (info->shared) 2543 { 2544 if (SYMBOL_CALLS_LOCAL (info, h)) 2545 { 2546 struct tilegx_elf_dyn_relocs **pp; 2547 2548 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) 2549 { 2550 p->count -= p->pc_count; 2551 p->pc_count = 0; 2552 if (p->count == 0) 2553 *pp = p->next; 2554 else 2555 pp = &p->next; 2556 } 2557 } 2558 2559 /* Also discard relocs on undefined weak syms with non-default 2560 visibility. */ 2561 if (eh->dyn_relocs != NULL 2562 && h->root.type == bfd_link_hash_undefweak) 2563 { 2564 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) 2565 eh->dyn_relocs = NULL; 2566 2567 /* Make sure undefined weak symbols are output as a dynamic 2568 symbol in PIEs. */ 2569 else if (h->dynindx == -1 2570 && !h->forced_local) 2571 { 2572 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2573 return FALSE; 2574 } 2575 } 2576 } 2577 else 2578 { 2579 /* For the non-shared case, discard space for relocs against 2580 symbols which turn out to need copy relocs or are not 2581 dynamic. */ 2582 2583 if (!h->non_got_ref 2584 && ((h->def_dynamic 2585 && !h->def_regular) 2586 || (htab->elf.dynamic_sections_created 2587 && (h->root.type == bfd_link_hash_undefweak 2588 || h->root.type == bfd_link_hash_undefined)))) 2589 { 2590 /* Make sure this symbol is output as a dynamic symbol. 2591 Undefined weak syms won't yet be marked as dynamic. */ 2592 if (h->dynindx == -1 2593 && !h->forced_local) 2594 { 2595 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2596 return FALSE; 2597 } 2598 2599 /* If that succeeded, we know we'll be keeping all the 2600 relocs. */ 2601 if (h->dynindx != -1) 2602 goto keep; 2603 } 2604 2605 eh->dyn_relocs = NULL; 2606 2607 keep: ; 2608 } 2609 2610 /* Finally, allocate space. */ 2611 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2612 { 2613 asection *sreloc = elf_section_data (p->sec)->sreloc; 2614 sreloc->size += p->count * TILEGX_ELF_RELA_BYTES (htab); 2615 } 2616 2617 return TRUE; 2618 } 2619 2620 /* Find any dynamic relocs that apply to read-only sections. */ 2621 2622 static bfd_boolean 2623 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) 2624 { 2625 struct tilegx_elf_link_hash_entry *eh; 2626 struct tilegx_elf_dyn_relocs *p; 2627 2628 eh = (struct tilegx_elf_link_hash_entry *) h; 2629 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2630 { 2631 asection *s = p->sec->output_section; 2632 2633 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2634 { 2635 struct bfd_link_info *info = (struct bfd_link_info *) inf; 2636 2637 info->flags |= DF_TEXTREL; 2638 2639 /* Not an error, just cut short the traversal. */ 2640 return FALSE; 2641 } 2642 } 2643 return TRUE; 2644 } 2645 2646 /* Return true if the dynamic symbol for a given section should be 2647 omitted when creating a shared library. */ 2648 2649 bfd_boolean 2650 tilegx_elf_omit_section_dynsym (bfd *output_bfd, 2651 struct bfd_link_info *info, 2652 asection *p) 2653 { 2654 /* We keep the .got section symbol so that explicit relocations 2655 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode 2656 can be turned into relocations against the .got symbol. */ 2657 if (strcmp (p->name, ".got") == 0) 2658 return FALSE; 2659 2660 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p); 2661 } 2662 2663 bfd_boolean 2664 tilegx_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 2665 struct bfd_link_info *info) 2666 { 2667 struct tilegx_elf_link_hash_table *htab; 2668 bfd *dynobj; 2669 asection *s; 2670 bfd *ibfd; 2671 2672 htab = tilegx_elf_hash_table (info); 2673 BFD_ASSERT (htab != NULL); 2674 dynobj = htab->elf.dynobj; 2675 BFD_ASSERT (dynobj != NULL); 2676 2677 if (elf_hash_table (info)->dynamic_sections_created) 2678 { 2679 /* Set the contents of the .interp section to the interpreter. */ 2680 if (info->executable) 2681 { 2682 s = bfd_get_linker_section (dynobj, ".interp"); 2683 BFD_ASSERT (s != NULL); 2684 s->size = strlen (htab->dynamic_interpreter) + 1; 2685 s->contents = (unsigned char *) htab->dynamic_interpreter; 2686 } 2687 } 2688 2689 /* Set up .got offsets for local syms, and space for local dynamic 2690 relocs. */ 2691 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) 2692 { 2693 bfd_signed_vma *local_got; 2694 bfd_signed_vma *end_local_got; 2695 char *local_tls_type; 2696 bfd_size_type locsymcount; 2697 Elf_Internal_Shdr *symtab_hdr; 2698 asection *srel; 2699 2700 if (! is_tilegx_elf (ibfd)) 2701 continue; 2702 2703 for (s = ibfd->sections; s != NULL; s = s->next) 2704 { 2705 struct tilegx_elf_dyn_relocs *p; 2706 2707 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) 2708 { 2709 if (!bfd_is_abs_section (p->sec) 2710 && bfd_is_abs_section (p->sec->output_section)) 2711 { 2712 /* Input section has been discarded, either because 2713 it is a copy of a linkonce section or due to 2714 linker script /DISCARD/, so we'll be discarding 2715 the relocs too. */ 2716 } 2717 else if (p->count != 0) 2718 { 2719 srel = elf_section_data (p->sec)->sreloc; 2720 srel->size += p->count * TILEGX_ELF_RELA_BYTES (htab); 2721 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 2722 info->flags |= DF_TEXTREL; 2723 } 2724 } 2725 } 2726 2727 local_got = elf_local_got_refcounts (ibfd); 2728 if (!local_got) 2729 continue; 2730 2731 symtab_hdr = &elf_symtab_hdr (ibfd); 2732 locsymcount = symtab_hdr->sh_info; 2733 end_local_got = local_got + locsymcount; 2734 local_tls_type = _bfd_tilegx_elf_local_got_tls_type (ibfd); 2735 s = htab->elf.sgot; 2736 srel = htab->elf.srelgot; 2737 for (; local_got < end_local_got; ++local_got, ++local_tls_type) 2738 { 2739 if (*local_got > 0) 2740 { 2741 *local_got = s->size; 2742 s->size += TILEGX_ELF_WORD_BYTES (htab); 2743 if (*local_tls_type == GOT_TLS_GD) 2744 s->size += TILEGX_ELF_WORD_BYTES (htab); 2745 if (info->shared 2746 || *local_tls_type == GOT_TLS_GD 2747 || *local_tls_type == GOT_TLS_IE) 2748 srel->size += TILEGX_ELF_RELA_BYTES (htab); 2749 } 2750 else 2751 *local_got = (bfd_vma) -1; 2752 } 2753 } 2754 2755 /* Allocate global sym .plt and .got entries, and space for global 2756 sym dynamic relocs. */ 2757 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); 2758 2759 if (elf_hash_table (info)->dynamic_sections_created) 2760 { 2761 /* If the .got section is more than 0x8000 bytes, we add 2762 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16 2763 bit relocations have a greater chance of working. */ 2764 if (htab->elf.sgot->size >= 0x8000 2765 && elf_hash_table (info)->hgot->root.u.def.value == 0) 2766 elf_hash_table (info)->hgot->root.u.def.value = 0x8000; 2767 } 2768 2769 if (htab->elf.sgotplt) 2770 { 2771 struct elf_link_hash_entry *got; 2772 got = elf_link_hash_lookup (elf_hash_table (info), 2773 "_GLOBAL_OFFSET_TABLE_", 2774 FALSE, FALSE, FALSE); 2775 2776 /* Don't allocate .got.plt section if there are no GOT nor PLT 2777 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */ 2778 if ((got == NULL 2779 || !got->ref_regular_nonweak) 2780 && (htab->elf.sgotplt->size 2781 == (unsigned)GOTPLT_HEADER_SIZE (htab)) 2782 && (htab->elf.splt == NULL 2783 || htab->elf.splt->size == 0) 2784 && (htab->elf.sgot == NULL 2785 || (htab->elf.sgot->size 2786 == get_elf_backend_data (output_bfd)->got_header_size))) 2787 htab->elf.sgotplt->size = 0; 2788 } 2789 2790 /* The check_relocs and adjust_dynamic_symbol entry points have 2791 determined the sizes of the various dynamic sections. Allocate 2792 memory for them. */ 2793 for (s = dynobj->sections; s != NULL; s = s->next) 2794 { 2795 if ((s->flags & SEC_LINKER_CREATED) == 0) 2796 continue; 2797 2798 if (s == htab->elf.splt 2799 || s == htab->elf.sgot 2800 || s == htab->elf.sgotplt 2801 || s == htab->sdynbss) 2802 { 2803 /* Strip this section if we don't need it; see the 2804 comment below. */ 2805 } 2806 else if (strncmp (s->name, ".rela", 5) == 0) 2807 { 2808 if (s->size != 0) 2809 { 2810 /* We use the reloc_count field as a counter if we need 2811 to copy relocs into the output file. */ 2812 s->reloc_count = 0; 2813 } 2814 } 2815 else 2816 { 2817 /* It's not one of our sections. */ 2818 continue; 2819 } 2820 2821 if (s->size == 0) 2822 { 2823 /* If we don't need this section, strip it from the 2824 output file. This is mostly to handle .rela.bss and 2825 .rela.plt. We must create both sections in 2826 create_dynamic_sections, because they must be created 2827 before the linker maps input sections to output 2828 sections. The linker does that before 2829 adjust_dynamic_symbol is called, and it is that 2830 function which decides whether anything needs to go 2831 into these sections. */ 2832 s->flags |= SEC_EXCLUDE; 2833 continue; 2834 } 2835 2836 if ((s->flags & SEC_HAS_CONTENTS) == 0) 2837 continue; 2838 2839 /* Allocate memory for the section contents. Zero the memory 2840 for the benefit of .rela.plt, which has 4 unused entries 2841 at the beginning, and we don't want garbage. */ 2842 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); 2843 if (s->contents == NULL) 2844 return FALSE; 2845 } 2846 2847 if (elf_hash_table (info)->dynamic_sections_created) 2848 { 2849 /* Add some entries to the .dynamic section. We fill in the 2850 values later, in tilegx_elf_finish_dynamic_sections, but we 2851 must add the entries now so that we get the correct size for 2852 the .dynamic section. The DT_DEBUG entry is filled in by the 2853 dynamic linker and used by the debugger. */ 2854 #define add_dynamic_entry(TAG, VAL) \ 2855 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 2856 2857 if (info->executable) 2858 { 2859 if (!add_dynamic_entry (DT_DEBUG, 0)) 2860 return FALSE; 2861 } 2862 2863 if (htab->elf.srelplt->size != 0) 2864 { 2865 if (!add_dynamic_entry (DT_PLTGOT, 0) 2866 || !add_dynamic_entry (DT_PLTRELSZ, 0) 2867 || !add_dynamic_entry (DT_PLTREL, DT_RELA) 2868 || !add_dynamic_entry (DT_JMPREL, 0)) 2869 return FALSE; 2870 } 2871 2872 if (!add_dynamic_entry (DT_RELA, 0) 2873 || !add_dynamic_entry (DT_RELASZ, 0) 2874 || !add_dynamic_entry (DT_RELAENT, TILEGX_ELF_RELA_BYTES (htab))) 2875 return FALSE; 2876 2877 /* If any dynamic relocs apply to a read-only section, 2878 then we need a DT_TEXTREL entry. */ 2879 if ((info->flags & DF_TEXTREL) == 0) 2880 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); 2881 2882 if (info->flags & DF_TEXTREL) 2883 { 2884 if (!add_dynamic_entry (DT_TEXTREL, 0)) 2885 return FALSE; 2886 } 2887 } 2888 #undef add_dynamic_entry 2889 2890 return TRUE; 2891 } 2892 2893 /* Return the base VMA address which should be subtracted from real addresses 2895 when resolving @dtpoff relocation. 2896 This is PT_TLS segment p_vaddr. */ 2897 2898 static bfd_vma 2899 dtpoff_base (struct bfd_link_info *info) 2900 { 2901 /* If tls_sec is NULL, we should have signalled an error already. */ 2902 if (elf_hash_table (info)->tls_sec == NULL) 2903 return 0; 2904 return elf_hash_table (info)->tls_sec->vma; 2905 } 2906 2907 /* Return the relocation value for @tpoff relocation. */ 2908 2909 static bfd_vma 2910 tpoff (struct bfd_link_info *info, bfd_vma address) 2911 { 2912 struct elf_link_hash_table *htab = elf_hash_table (info); 2913 2914 /* If tls_sec is NULL, we should have signalled an error already. */ 2915 if (htab->tls_sec == NULL) 2916 return 0; 2917 2918 return (address - htab->tls_sec->vma); 2919 } 2920 2921 /* Copy SIZE bits from FROM to TO at address ADDR. */ 2922 2923 static void 2924 tilegx_copy_bits (bfd_byte *addr, int from, int to, int size) 2925 { 2926 int i; 2927 for (i = 0; i < size; i++) 2928 { 2929 int from_byte = (from + i) / 8; 2930 int from_bit = (from + i) % 8; 2931 int to_byte = (to + i) / 8; 2932 int to_bit = (to + i) % 8; 2933 bfd_byte to_mask = 1 << to_bit; 2934 addr[to_byte] = (addr[to_byte] & ~to_mask) 2935 | ((addr[from_byte] >> from_bit << to_bit) & to_mask); 2936 } 2937 } 2938 2939 /* Replace the MASK bits in ADDR with those in INSN, for the next 2940 TILEGX_BUNDLE_SIZE_IN_BYTES bytes. */ 2941 2942 static void 2943 tilegx_replace_insn (bfd_byte *addr, const bfd_byte *mask, 2944 const bfd_byte *insn) 2945 { 2946 int i; 2947 for (i = 0; i < TILEGX_BUNDLE_SIZE_IN_BYTES; i++) 2948 { 2949 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]); 2950 } 2951 } 2952 2953 /* Mask to extract the bits corresponding to an instruction in a 2954 specific pipe of a bundle. */ 2955 static const bfd_byte insn_mask_X1[] = { 2956 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x3f 2957 }; 2958 2959 /* Mask to extract the bits corresponding to an instruction in a 2960 specific pipe of a bundle, minus the destination operand and the 2961 first source operand. */ 2962 static const bfd_byte insn_mask_X0_no_dest_no_srca[] = { 2963 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00 2964 }; 2965 2966 static const bfd_byte insn_mask_X1_no_dest_no_srca[] = { 2967 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x3f 2968 }; 2969 2970 static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = { 2971 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00 2972 }; 2973 static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = { 2974 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x3c 2975 }; 2976 2977 /* Mask to extract the bits corresponding to an instruction in a 2978 specific pipe of a bundle, minus the register operands. */ 2979 static const bfd_byte insn_mask_X0_no_operand[] = { 2980 0x00, 0x00, 0xfc, 0x7f, 0x00, 0x00, 0x00, 0x00 2981 }; 2982 2983 static const bfd_byte insn_mask_X1_no_operand[] = { 2984 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x3f 2985 }; 2986 2987 static const bfd_byte insn_mask_Y0_no_operand[] = { 2988 0x00, 0x00, 0x0c, 0x78, 0x00, 0x00, 0x00, 0x00 2989 }; 2990 2991 static const bfd_byte insn_mask_Y1_no_operand[] = { 2992 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x3c 2993 }; 2994 2995 /* Various instructions synthesized to support tls references. */ 2996 2997 /* ld r0, r0 in the X1 pipe, used for tls ie. */ 2998 static const bfd_byte insn_tls_ie_ld_X1[] = { 2999 0x00, 0x00, 0x00, 0x00, 0x00, 0xe8, 0x6a, 0x28 3000 }; 3001 3002 /* ld4s r0, r0 in the X1 pipe, used for tls ie. */ 3003 static const bfd_byte insn_tls_ie_ld4s_X1[] = { 3004 0x00, 0x00, 0x00, 0x00, 0x00, 0x98, 0x6a, 0x28 3005 }; 3006 3007 /* add r0, r0, tp in various pipes, used for tls ie. */ 3008 static const bfd_byte insn_tls_ie_add_X0X1[] = { 3009 0x00, 0x50, 0x0f, 0x50, 0x00, 0xa8, 0x07, 0x28 3010 }; 3011 static const bfd_byte insn_tls_ie_add_Y0Y1[] = { 3012 0x00, 0x50, 0x27, 0x2c, 0x00, 0xa8, 0x13, 0x9a 3013 }; 3014 3015 /* addx r0, r0, tp in various pipes, used for tls ie. */ 3016 static const bfd_byte insn_tls_ie_addx_X0X1[] = { 3017 0x00, 0x50, 0x0b, 0x50, 0x00, 0xa8, 0x05, 0x28 3018 }; 3019 static const bfd_byte insn_tls_ie_addx_Y0Y1[] = { 3020 0x00, 0x50, 0x03, 0x2c, 0x00, 0xa8, 0x01, 0x9a 3021 }; 3022 3023 /* move r0, r0 in various pipes, used for tls gd. */ 3024 static const bfd_byte insn_tls_gd_add_X0X1[] = { 3025 0x00, 0xf0, 0x07, 0x51, 0x00, 0xf8, 0x3b, 0x28 3026 }; 3027 static const bfd_byte insn_tls_gd_add_Y0Y1[] = { 3028 0x00, 0xf0, 0x0b, 0x54, 0x00, 0xf8, 0x05, 0xae 3029 }; 3030 3031 static const bfd_byte *insn_move_X0X1 = insn_tls_gd_add_X0X1; 3032 static const bfd_byte *insn_move_Y0Y1 = insn_tls_gd_add_Y0Y1; 3033 3034 static const bfd_byte *insn_add_X0X1 = insn_tls_ie_add_X0X1; 3035 static const bfd_byte *insn_add_Y0Y1 = insn_tls_ie_add_Y0Y1; 3036 3037 static const bfd_byte *insn_addx_X0X1 = insn_tls_ie_addx_X0X1; 3038 static const bfd_byte *insn_addx_Y0Y1 = insn_tls_ie_addx_Y0Y1; 3039 3040 /* Relocate an TILEGX ELF section. 3041 3042 The RELOCATE_SECTION function is called by the new ELF backend linker 3043 to handle the relocations for a section. 3044 3045 The relocs are always passed as Rela structures. 3046 3047 This function is responsible for adjusting the section contents as 3048 necessary, and (if generating a relocatable output file) adjusting 3049 the reloc addend as necessary. 3050 3051 This function does not have to worry about setting the reloc 3052 address or the reloc symbol index. 3053 3054 LOCAL_SYMS is a pointer to the swapped in local symbols. 3055 3056 LOCAL_SECTIONS is an array giving the section in the input file 3057 corresponding to the st_shndx field of each local symbol. 3058 3059 The global hash table entry for the global symbols can be found 3060 via elf_sym_hashes (input_bfd). 3061 3062 When generating relocatable output, this function must handle 3063 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 3064 going to be the section symbol corresponding to the output 3065 section, which means that the addend must be adjusted 3066 accordingly. */ 3067 3068 bfd_boolean 3069 tilegx_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, 3070 bfd *input_bfd, asection *input_section, 3071 bfd_byte *contents, Elf_Internal_Rela *relocs, 3072 Elf_Internal_Sym *local_syms, 3073 asection **local_sections) 3074 { 3075 struct tilegx_elf_link_hash_table *htab; 3076 Elf_Internal_Shdr *symtab_hdr; 3077 struct elf_link_hash_entry **sym_hashes; 3078 bfd_vma *local_got_offsets; 3079 bfd_vma got_base; 3080 asection *sreloc; 3081 Elf_Internal_Rela *rel; 3082 Elf_Internal_Rela *relend; 3083 int num_relocs; 3084 3085 htab = tilegx_elf_hash_table (info); 3086 BFD_ASSERT (htab != NULL); 3087 symtab_hdr = &elf_symtab_hdr (input_bfd); 3088 sym_hashes = elf_sym_hashes (input_bfd); 3089 local_got_offsets = elf_local_got_offsets (input_bfd); 3090 3091 if (elf_hash_table (info)->hgot == NULL) 3092 got_base = 0; 3093 else 3094 got_base = elf_hash_table (info)->hgot->root.u.def.value; 3095 3096 sreloc = elf_section_data (input_section)->sreloc; 3097 3098 rel = relocs; 3099 num_relocs = input_section->reloc_count; 3100 relend = relocs + num_relocs; 3101 for (; rel < relend; rel++) 3102 { 3103 int r_type, tls_type; 3104 bfd_boolean is_tls_iele, is_tls_le; 3105 reloc_howto_type *howto; 3106 unsigned long r_symndx; 3107 struct elf_link_hash_entry *h; 3108 Elf_Internal_Sym *sym; 3109 tilegx_create_func create_func; 3110 asection *sec; 3111 bfd_vma relocation; 3112 bfd_reloc_status_type r; 3113 const char *name; 3114 bfd_vma off; 3115 bfd_boolean is_plt = FALSE; 3116 3117 bfd_boolean unresolved_reloc; 3118 3119 r_type = TILEGX_ELF_R_TYPE (rel->r_info); 3120 if (r_type == R_TILEGX_GNU_VTINHERIT 3121 || r_type == R_TILEGX_GNU_VTENTRY) 3122 continue; 3123 3124 if ((unsigned int)r_type >= ARRAY_SIZE (tilegx_elf_howto_table)) 3125 { 3126 /* Not clear if we need to check here, but just be paranoid. */ 3127 (*_bfd_error_handler) 3128 (_("%B: unrecognized relocation (0x%x) in section `%A'"), 3129 input_bfd, r_type, input_section); 3130 bfd_set_error (bfd_error_bad_value); 3131 return FALSE; 3132 } 3133 3134 howto = tilegx_elf_howto_table + r_type; 3135 3136 /* This is a final link. */ 3137 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info); 3138 h = NULL; 3139 sym = NULL; 3140 sec = NULL; 3141 unresolved_reloc = FALSE; 3142 if (r_symndx < symtab_hdr->sh_info) 3143 { 3144 sym = local_syms + r_symndx; 3145 sec = local_sections[r_symndx]; 3146 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 3147 } 3148 else 3149 { 3150 bfd_boolean warned; 3151 3152 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 3153 r_symndx, symtab_hdr, sym_hashes, 3154 h, sec, relocation, 3155 unresolved_reloc, warned); 3156 if (warned) 3157 { 3158 /* To avoid generating warning messages about truncated 3159 relocations, set the relocation's address to be the same as 3160 the start of this section. */ 3161 if (input_section->output_section != NULL) 3162 relocation = input_section->output_section->vma; 3163 else 3164 relocation = 0; 3165 } 3166 } 3167 3168 if (sec != NULL && discarded_section (sec)) 3169 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 3170 rel, 1, relend, howto, 0, contents); 3171 3172 if (info->relocatable) 3173 continue; 3174 3175 if (h != NULL) 3176 name = h->root.root.string; 3177 else 3178 { 3179 name = (bfd_elf_string_from_elf_section 3180 (input_bfd, symtab_hdr->sh_link, sym->st_name)); 3181 if (name == NULL || *name == '\0') 3182 name = bfd_section_name (input_bfd, sec); 3183 } 3184 3185 switch (r_type) 3186 { 3187 case R_TILEGX_TLS_GD_CALL: 3188 case R_TILEGX_IMM8_X0_TLS_GD_ADD: 3189 case R_TILEGX_IMM8_Y0_TLS_GD_ADD: 3190 case R_TILEGX_IMM8_X1_TLS_GD_ADD: 3191 case R_TILEGX_IMM8_Y1_TLS_GD_ADD: 3192 case R_TILEGX_IMM8_X0_TLS_ADD: 3193 case R_TILEGX_IMM8_Y0_TLS_ADD: 3194 case R_TILEGX_IMM8_X1_TLS_ADD: 3195 case R_TILEGX_IMM8_Y1_TLS_ADD: 3196 tls_type = GOT_UNKNOWN; 3197 if (h == NULL && local_got_offsets) 3198 tls_type = 3199 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx]; 3200 else if (h != NULL) 3201 tls_type = tilegx_elf_hash_entry(h)->tls_type; 3202 3203 is_tls_iele = (! info->shared || tls_type == GOT_TLS_IE); 3204 is_tls_le = is_tls_iele && (!input_section->sec_flg0 3205 && !info->shared 3206 && (h == NULL || h->dynindx == -1)); 3207 3208 if (r_type == R_TILEGX_TLS_GD_CALL) 3209 { 3210 if (is_tls_le) 3211 { 3212 /* GD -> LE */ 3213 tilegx_replace_insn (contents + rel->r_offset, 3214 insn_mask_X1, insn_move_X0X1); 3215 continue; 3216 } 3217 else if (is_tls_iele) 3218 { 3219 /* GD -> IE */ 3220 if (ABI_64_P (output_bfd)) 3221 tilegx_replace_insn (contents + rel->r_offset, 3222 insn_mask_X1, insn_tls_ie_ld_X1); 3223 else 3224 tilegx_replace_insn (contents + rel->r_offset, 3225 insn_mask_X1, insn_tls_ie_ld4s_X1); 3226 continue; 3227 } 3228 3229 /* GD -> GD */ 3230 h = (struct elf_link_hash_entry *) 3231 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE, 3232 FALSE, TRUE); 3233 BFD_ASSERT (h != NULL); 3234 r_type = R_TILEGX_JUMPOFF_X1_PLT; 3235 howto = tilegx_elf_howto_table + r_type; 3236 } 3237 else if (r_type == R_TILEGX_IMM8_X0_TLS_ADD 3238 || r_type == R_TILEGX_IMM8_X1_TLS_ADD 3239 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD 3240 || r_type == R_TILEGX_IMM8_Y1_TLS_ADD) 3241 { 3242 bfd_boolean is_pipe0 = 3243 (r_type == R_TILEGX_IMM8_X0_TLS_ADD 3244 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD); 3245 bfd_boolean is_X0X1 = 3246 (r_type == R_TILEGX_IMM8_X0_TLS_ADD 3247 || r_type == R_TILEGX_IMM8_X1_TLS_ADD); 3248 int dest_begin = is_pipe0 ? 0 : 31; 3249 int src_begin; 3250 const bfd_byte *insn; 3251 const bfd_byte *mask = NULL; 3252 3253 if (is_tls_le) 3254 { 3255 /* 1. copy dest operand into the first source operand. 3256 2. change the opcode to "move". */ 3257 src_begin = is_pipe0 ? 6 : 37; 3258 insn = is_X0X1 ? insn_move_X0X1 : insn_move_Y0Y1; 3259 3260 switch (r_type) 3261 { 3262 case R_TILEGX_IMM8_X0_TLS_ADD: 3263 mask = insn_mask_X0_no_dest_no_srca; 3264 break; 3265 case R_TILEGX_IMM8_X1_TLS_ADD: 3266 mask = insn_mask_X1_no_dest_no_srca; 3267 break; 3268 case R_TILEGX_IMM8_Y0_TLS_ADD: 3269 mask = insn_mask_Y0_no_dest_no_srca; 3270 break; 3271 case R_TILEGX_IMM8_Y1_TLS_ADD: 3272 mask = insn_mask_Y1_no_dest_no_srca; 3273 break; 3274 } 3275 } 3276 else 3277 { 3278 /* 1. copy dest operand into the second source operand. 3279 2. change the opcode to "add". */ 3280 src_begin = is_pipe0 ? 12 : 43; 3281 if (ABI_64_P (output_bfd)) 3282 insn = is_X0X1 ? insn_add_X0X1 : insn_add_Y0Y1; 3283 else 3284 insn = is_X0X1 ? insn_addx_X0X1 : insn_addx_Y0Y1; 3285 3286 switch (r_type) 3287 { 3288 case R_TILEGX_IMM8_X0_TLS_ADD: 3289 mask = insn_mask_X0_no_operand; 3290 break; 3291 case R_TILEGX_IMM8_X1_TLS_ADD: 3292 mask = insn_mask_X1_no_operand; 3293 break; 3294 case R_TILEGX_IMM8_Y0_TLS_ADD: 3295 mask = insn_mask_Y0_no_operand; 3296 break; 3297 case R_TILEGX_IMM8_Y1_TLS_ADD: 3298 mask = insn_mask_Y1_no_operand; 3299 break; 3300 } 3301 } 3302 3303 tilegx_copy_bits (contents + rel->r_offset, dest_begin, 3304 src_begin, 6); 3305 tilegx_replace_insn (contents + rel->r_offset, mask, insn); 3306 3307 continue; 3308 } 3309 else 3310 { 3311 const bfd_byte *mask = NULL; 3312 const bfd_byte *add_insn = NULL; 3313 bfd_boolean is_64bit = ABI_64_P (output_bfd); 3314 3315 switch (r_type) 3316 { 3317 case R_TILEGX_IMM8_X0_TLS_GD_ADD: 3318 add_insn = is_tls_iele 3319 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1) 3320 : insn_tls_gd_add_X0X1; 3321 mask = insn_mask_X0_no_dest_no_srca; 3322 break; 3323 case R_TILEGX_IMM8_X1_TLS_GD_ADD: 3324 add_insn = is_tls_iele 3325 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1) 3326 : insn_tls_gd_add_X0X1; 3327 mask = insn_mask_X1_no_dest_no_srca; 3328 break; 3329 case R_TILEGX_IMM8_Y0_TLS_GD_ADD: 3330 add_insn = is_tls_iele 3331 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1) 3332 : insn_tls_gd_add_Y0Y1; 3333 mask = insn_mask_Y0_no_dest_no_srca; 3334 break; 3335 case R_TILEGX_IMM8_Y1_TLS_GD_ADD: 3336 add_insn = is_tls_iele 3337 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1) 3338 : insn_tls_gd_add_Y0Y1; 3339 mask = insn_mask_Y1_no_dest_no_srca; 3340 break; 3341 } 3342 3343 tilegx_replace_insn (contents + rel->r_offset, mask, add_insn); 3344 3345 continue; 3346 } 3347 break; 3348 case R_TILEGX_TLS_IE_LOAD: 3349 if (!input_section->sec_flg0 3350 && !info->shared 3351 && (h == NULL || h->dynindx == -1)) 3352 { 3353 /* IE -> LE */ 3354 tilegx_replace_insn (contents + rel->r_offset, 3355 insn_mask_X1_no_dest_no_srca, 3356 insn_move_X0X1); 3357 } 3358 else 3359 { 3360 /* IE -> IE */ 3361 if (ABI_64_P (output_bfd)) 3362 tilegx_replace_insn (contents + rel->r_offset, 3363 insn_mask_X1_no_dest_no_srca, 3364 insn_tls_ie_ld_X1); 3365 else 3366 tilegx_replace_insn (contents + rel->r_offset, 3367 insn_mask_X1_no_dest_no_srca, 3368 insn_tls_ie_ld4s_X1); 3369 } 3370 continue; 3371 break; 3372 default: 3373 break; 3374 } 3375 3376 switch (r_type) 3377 { 3378 case R_TILEGX_IMM16_X0_HW0_GOT: 3379 case R_TILEGX_IMM16_X1_HW0_GOT: 3380 case R_TILEGX_IMM16_X0_HW0_LAST_GOT: 3381 case R_TILEGX_IMM16_X1_HW0_LAST_GOT: 3382 case R_TILEGX_IMM16_X0_HW1_LAST_GOT: 3383 case R_TILEGX_IMM16_X1_HW1_LAST_GOT: 3384 /* Relocation is to the entry for this symbol in the global 3385 offset table. */ 3386 if (htab->elf.sgot == NULL) 3387 abort (); 3388 3389 if (h != NULL) 3390 { 3391 bfd_boolean dyn; 3392 3393 off = h->got.offset; 3394 BFD_ASSERT (off != (bfd_vma) -1); 3395 dyn = elf_hash_table (info)->dynamic_sections_created; 3396 3397 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) 3398 || (info->shared 3399 && SYMBOL_REFERENCES_LOCAL (info, h))) 3400 { 3401 /* This is actually a static link, or it is a 3402 -Bsymbolic link and the symbol is defined 3403 locally, or the symbol was forced to be local 3404 because of a version file. We must initialize 3405 this entry in the global offset table. Since the 3406 offset must always be a multiple 3407 of 8 for 64-bit, we use the least significant bit 3408 to record whether we have initialized it already. 3409 3410 When doing a dynamic link, we create a .rela.got 3411 relocation entry to initialize the value. This 3412 is done in the finish_dynamic_symbol routine. */ 3413 if ((off & 1) != 0) 3414 off &= ~1; 3415 else 3416 { 3417 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation, 3418 htab->elf.sgot->contents + off); 3419 h->got.offset |= 1; 3420 } 3421 } 3422 else 3423 unresolved_reloc = FALSE; 3424 } 3425 else 3426 { 3427 BFD_ASSERT (local_got_offsets != NULL 3428 && local_got_offsets[r_symndx] != (bfd_vma) -1); 3429 3430 off = local_got_offsets[r_symndx]; 3431 3432 /* The offset must always be a multiple of 8 on 64-bit. 3433 We use the least significant bit to record 3434 whether we have already processed this entry. */ 3435 if ((off & 1) != 0) 3436 off &= ~1; 3437 else 3438 { 3439 if (info->shared) 3440 { 3441 asection *s; 3442 Elf_Internal_Rela outrel; 3443 3444 /* We need to generate a R_TILEGX_RELATIVE reloc 3445 for the dynamic linker. */ 3446 s = htab->elf.srelgot; 3447 BFD_ASSERT (s != NULL); 3448 3449 outrel.r_offset = (htab->elf.sgot->output_section->vma 3450 + htab->elf.sgot->output_offset 3451 + off); 3452 outrel.r_info = 3453 TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE); 3454 outrel.r_addend = relocation; 3455 relocation = 0; 3456 tilegx_elf_append_rela (output_bfd, s, &outrel); 3457 } 3458 3459 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation, 3460 htab->elf.sgot->contents + off); 3461 local_got_offsets[r_symndx] |= 1; 3462 } 3463 } 3464 relocation = off - got_base; 3465 break; 3466 3467 case R_TILEGX_JUMPOFF_X1_PLT: 3468 /* Relocation is to the entry for this symbol in the 3469 procedure linkage table. */ 3470 BFD_ASSERT (h != NULL); 3471 3472 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL) 3473 { 3474 /* We didn't make a PLT entry for this symbol. This 3475 happens when statically linking PIC code, or when 3476 using -Bsymbolic. */ 3477 break; 3478 } 3479 3480 relocation = (htab->elf.splt->output_section->vma 3481 + htab->elf.splt->output_offset 3482 + h->plt.offset); 3483 unresolved_reloc = FALSE; 3484 break; 3485 3486 case R_TILEGX_64_PCREL: 3487 case R_TILEGX_32_PCREL: 3488 case R_TILEGX_16_PCREL: 3489 case R_TILEGX_8_PCREL: 3490 case R_TILEGX_IMM16_X0_HW0_PCREL: 3491 case R_TILEGX_IMM16_X1_HW0_PCREL: 3492 case R_TILEGX_IMM16_X0_HW1_PCREL: 3493 case R_TILEGX_IMM16_X1_HW1_PCREL: 3494 case R_TILEGX_IMM16_X0_HW2_PCREL: 3495 case R_TILEGX_IMM16_X1_HW2_PCREL: 3496 case R_TILEGX_IMM16_X0_HW3_PCREL: 3497 case R_TILEGX_IMM16_X1_HW3_PCREL: 3498 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL: 3499 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL: 3500 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL: 3501 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL: 3502 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL: 3503 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL: 3504 if (h != NULL 3505 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 3506 break; 3507 /* Fall through. */ 3508 case R_TILEGX_64: 3509 case R_TILEGX_32: 3510 case R_TILEGX_16: 3511 case R_TILEGX_8: 3512 case R_TILEGX_HW0: 3513 case R_TILEGX_HW1: 3514 case R_TILEGX_HW2: 3515 case R_TILEGX_HW3: 3516 case R_TILEGX_HW0_LAST: 3517 case R_TILEGX_HW1_LAST: 3518 case R_TILEGX_HW2_LAST: 3519 case R_TILEGX_COPY: 3520 case R_TILEGX_GLOB_DAT: 3521 case R_TILEGX_JMP_SLOT: 3522 case R_TILEGX_RELATIVE: 3523 case R_TILEGX_BROFF_X1: 3524 case R_TILEGX_JUMPOFF_X1: 3525 case R_TILEGX_IMM8_X0: 3526 case R_TILEGX_IMM8_Y0: 3527 case R_TILEGX_IMM8_X1: 3528 case R_TILEGX_IMM8_Y1: 3529 case R_TILEGX_DEST_IMM8_X1: 3530 case R_TILEGX_MT_IMM14_X1: 3531 case R_TILEGX_MF_IMM14_X1: 3532 case R_TILEGX_MMSTART_X0: 3533 case R_TILEGX_MMEND_X0: 3534 case R_TILEGX_SHAMT_X0: 3535 case R_TILEGX_SHAMT_X1: 3536 case R_TILEGX_SHAMT_Y0: 3537 case R_TILEGX_SHAMT_Y1: 3538 case R_TILEGX_IMM16_X0_HW0: 3539 case R_TILEGX_IMM16_X1_HW0: 3540 case R_TILEGX_IMM16_X0_HW1: 3541 case R_TILEGX_IMM16_X1_HW1: 3542 case R_TILEGX_IMM16_X0_HW2: 3543 case R_TILEGX_IMM16_X1_HW2: 3544 case R_TILEGX_IMM16_X0_HW3: 3545 case R_TILEGX_IMM16_X1_HW3: 3546 case R_TILEGX_IMM16_X0_HW0_LAST: 3547 case R_TILEGX_IMM16_X1_HW0_LAST: 3548 case R_TILEGX_IMM16_X0_HW1_LAST: 3549 case R_TILEGX_IMM16_X1_HW1_LAST: 3550 case R_TILEGX_IMM16_X0_HW2_LAST: 3551 case R_TILEGX_IMM16_X1_HW2_LAST: 3552 if ((input_section->flags & SEC_ALLOC) == 0) 3553 break; 3554 3555 if ((info->shared 3556 && (h == NULL 3557 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 3558 || h->root.type != bfd_link_hash_undefweak) 3559 && (! howto->pc_relative 3560 || !SYMBOL_CALLS_LOCAL (info, h))) 3561 || (!info->shared 3562 && h != NULL 3563 && h->dynindx != -1 3564 && !h->non_got_ref 3565 && ((h->def_dynamic 3566 && !h->def_regular) 3567 || h->root.type == bfd_link_hash_undefweak 3568 || h->root.type == bfd_link_hash_undefined))) 3569 { 3570 Elf_Internal_Rela outrel; 3571 bfd_boolean skip, relocate = FALSE; 3572 3573 /* When generating a shared object, these relocations 3574 are copied into the output file to be resolved at run 3575 time. */ 3576 3577 BFD_ASSERT (sreloc != NULL); 3578 3579 skip = FALSE; 3580 3581 outrel.r_offset = 3582 _bfd_elf_section_offset (output_bfd, info, input_section, 3583 rel->r_offset); 3584 if (outrel.r_offset == (bfd_vma) -1) 3585 skip = TRUE; 3586 else if (outrel.r_offset == (bfd_vma) -2) 3587 skip = TRUE, relocate = TRUE; 3588 outrel.r_offset += (input_section->output_section->vma 3589 + input_section->output_offset); 3590 3591 switch (r_type) 3592 { 3593 case R_TILEGX_64_PCREL: 3594 case R_TILEGX_32_PCREL: 3595 case R_TILEGX_16_PCREL: 3596 case R_TILEGX_8_PCREL: 3597 /* If the symbol is not dynamic, we should not keep 3598 a dynamic relocation. But an .rela.* slot has been 3599 allocated for it, output R_TILEGX_NONE. 3600 FIXME: Add code tracking needed dynamic relocs as 3601 e.g. i386 has. */ 3602 if (h->dynindx == -1) 3603 skip = TRUE, relocate = TRUE; 3604 break; 3605 } 3606 3607 if (skip) 3608 memset (&outrel, 0, sizeof outrel); 3609 /* h->dynindx may be -1 if the symbol was marked to 3610 become local. */ 3611 else if (h != NULL && 3612 h->dynindx != -1 3613 && (! is_plt 3614 || !info->shared 3615 || !SYMBOLIC_BIND (info, h) 3616 || !h->def_regular)) 3617 { 3618 BFD_ASSERT (h->dynindx != -1); 3619 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, h->dynindx, r_type); 3620 outrel.r_addend = rel->r_addend; 3621 } 3622 else 3623 { 3624 if (r_type == R_TILEGX_32 || r_type == R_TILEGX_64) 3625 { 3626 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, 3627 R_TILEGX_RELATIVE); 3628 outrel.r_addend = relocation + rel->r_addend; 3629 } 3630 else 3631 { 3632 long indx; 3633 3634 outrel.r_addend = relocation + rel->r_addend; 3635 3636 if (is_plt) 3637 sec = htab->elf.splt; 3638 3639 if (bfd_is_abs_section (sec)) 3640 indx = 0; 3641 else if (sec == NULL || sec->owner == NULL) 3642 { 3643 bfd_set_error (bfd_error_bad_value); 3644 return FALSE; 3645 } 3646 else 3647 { 3648 asection *osec; 3649 3650 /* We are turning this relocation into one 3651 against a section symbol. It would be 3652 proper to subtract the symbol's value, 3653 osec->vma, from the emitted reloc addend, 3654 but ld.so expects buggy relocs. */ 3655 osec = sec->output_section; 3656 indx = elf_section_data (osec)->dynindx; 3657 3658 if (indx == 0) 3659 { 3660 osec = htab->elf.text_index_section; 3661 indx = elf_section_data (osec)->dynindx; 3662 } 3663 3664 /* FIXME: we really should be able to link non-pic 3665 shared libraries. */ 3666 if (indx == 0) 3667 { 3668 BFD_FAIL (); 3669 (*_bfd_error_handler) 3670 (_("%B: probably compiled without -fPIC?"), 3671 input_bfd); 3672 bfd_set_error (bfd_error_bad_value); 3673 return FALSE; 3674 } 3675 } 3676 3677 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, indx, 3678 r_type); 3679 } 3680 } 3681 3682 tilegx_elf_append_rela (output_bfd, sreloc, &outrel); 3683 3684 /* This reloc will be computed at runtime, so there's no 3685 need to do anything now. */ 3686 if (! relocate) 3687 continue; 3688 } 3689 break; 3690 3691 case R_TILEGX_IMM16_X0_HW0_TLS_LE: 3692 case R_TILEGX_IMM16_X1_HW0_TLS_LE: 3693 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE: 3694 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE: 3695 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE: 3696 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE: 3697 if (info->shared) 3698 { 3699 Elf_Internal_Rela outrel; 3700 bfd_boolean skip; 3701 3702 BFD_ASSERT (sreloc != NULL); 3703 skip = FALSE; 3704 outrel.r_offset = 3705 _bfd_elf_section_offset (output_bfd, info, input_section, 3706 rel->r_offset); 3707 if (outrel.r_offset == (bfd_vma) -1) 3708 skip = TRUE; 3709 else if (outrel.r_offset == (bfd_vma) -2) 3710 skip = TRUE; 3711 outrel.r_offset += (input_section->output_section->vma 3712 + input_section->output_offset); 3713 if (skip) 3714 memset (&outrel, 0, sizeof outrel); 3715 else 3716 { 3717 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, r_type); 3718 outrel.r_addend = relocation - dtpoff_base (info) 3719 + rel->r_addend; 3720 } 3721 3722 tilegx_elf_append_rela (output_bfd, sreloc, &outrel); 3723 continue; 3724 } 3725 relocation = tpoff (info, relocation); 3726 break; 3727 3728 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 3729 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 3730 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 3731 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 3732 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 3733 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 3734 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 3735 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 3736 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 3737 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 3738 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 3739 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 3740 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL, 3741 input_section->sec_flg0); 3742 tls_type = GOT_UNKNOWN; 3743 if (h == NULL && local_got_offsets) 3744 tls_type = 3745 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx]; 3746 else if (h != NULL) 3747 { 3748 tls_type = tilegx_elf_hash_entry(h)->tls_type; 3749 if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE) 3750 r_type = (!input_section->sec_flg0 3751 ? tilegx_tls_translate_to_le (r_type) 3752 : tilegx_tls_translate_to_ie (r_type)); 3753 } 3754 3755 if (tls_type == GOT_TLS_IE) 3756 r_type = tilegx_tls_translate_to_ie (r_type); 3757 3758 if (r_type == R_TILEGX_IMM16_X0_HW0_TLS_LE 3759 || r_type == R_TILEGX_IMM16_X1_HW0_TLS_LE 3760 || r_type == R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE 3761 || r_type == R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE 3762 || r_type == R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE 3763 || r_type == R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE) 3764 { 3765 relocation = tpoff (info, relocation); 3766 break; 3767 } 3768 3769 if (h != NULL) 3770 { 3771 off = h->got.offset; 3772 h->got.offset |= 1; 3773 } 3774 else 3775 { 3776 BFD_ASSERT (local_got_offsets != NULL); 3777 off = local_got_offsets[r_symndx]; 3778 local_got_offsets[r_symndx] |= 1; 3779 } 3780 3781 if (htab->elf.sgot == NULL) 3782 abort (); 3783 3784 if ((off & 1) != 0) 3785 off &= ~1; 3786 else 3787 { 3788 Elf_Internal_Rela outrel; 3789 int indx = 0; 3790 bfd_boolean need_relocs = FALSE; 3791 3792 if (htab->elf.srelgot == NULL) 3793 abort (); 3794 3795 if (h != NULL) 3796 { 3797 bfd_boolean dyn; 3798 dyn = htab->elf.dynamic_sections_created; 3799 3800 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) 3801 && (!info->shared 3802 || !SYMBOL_REFERENCES_LOCAL (info, h))) 3803 { 3804 indx = h->dynindx; 3805 } 3806 } 3807 3808 /* The GOT entries have not been initialized yet. Do it 3809 now, and emit any relocations. */ 3810 if ((info->shared || indx != 0) 3811 && (h == NULL 3812 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 3813 || h->root.type != bfd_link_hash_undefweak)) 3814 need_relocs = TRUE; 3815 3816 switch (r_type) 3817 { 3818 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 3819 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 3820 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 3821 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 3822 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 3823 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 3824 if (need_relocs) { 3825 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 3826 htab->elf.sgot->contents + off); 3827 outrel.r_offset = (htab->elf.sgot->output_section->vma 3828 + htab->elf.sgot->output_offset + off); 3829 outrel.r_addend = 0; 3830 if (indx == 0) 3831 outrel.r_addend = relocation - dtpoff_base (info); 3832 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx, 3833 TILEGX_ELF_TPOFF_RELOC (htab)); 3834 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); 3835 } else { 3836 TILEGX_ELF_PUT_WORD (htab, output_bfd, 3837 tpoff (info, relocation), 3838 htab->elf.sgot->contents + off); 3839 } 3840 break; 3841 3842 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 3843 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 3844 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 3845 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 3846 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 3847 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 3848 if (need_relocs) { 3849 outrel.r_offset = (htab->elf.sgot->output_section->vma 3850 + htab->elf.sgot->output_offset + off); 3851 outrel.r_addend = 0; 3852 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx, 3853 TILEGX_ELF_DTPMOD_RELOC (htab)); 3854 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 3855 htab->elf.sgot->contents + off); 3856 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); 3857 if (indx == 0) 3858 { 3859 BFD_ASSERT (! unresolved_reloc); 3860 TILEGX_ELF_PUT_WORD (htab, output_bfd, 3861 relocation - dtpoff_base (info), 3862 (htab->elf.sgot->contents + off + 3863 TILEGX_ELF_WORD_BYTES (htab))); 3864 } 3865 else 3866 { 3867 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 3868 (htab->elf.sgot->contents + off + 3869 TILEGX_ELF_WORD_BYTES (htab))); 3870 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx, 3871 TILEGX_ELF_DTPOFF_RELOC (htab)); 3872 outrel.r_offset += TILEGX_ELF_WORD_BYTES (htab); 3873 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); 3874 } 3875 } 3876 3877 else { 3878 /* If we are not emitting relocations for a 3879 general dynamic reference, then we must be in a 3880 static link or an executable link with the 3881 symbol binding locally. Mark it as belonging 3882 to module 1, the executable. */ 3883 TILEGX_ELF_PUT_WORD (htab, output_bfd, 1, 3884 htab->elf.sgot->contents + off ); 3885 TILEGX_ELF_PUT_WORD (htab, output_bfd, 3886 relocation - dtpoff_base (info), 3887 htab->elf.sgot->contents + off + 3888 TILEGX_ELF_WORD_BYTES (htab)); 3889 } 3890 break; 3891 } 3892 } 3893 3894 if (off >= (bfd_vma) -2) 3895 abort (); 3896 3897 relocation = off - got_base; 3898 unresolved_reloc = FALSE; 3899 howto = tilegx_elf_howto_table + r_type; 3900 break; 3901 3902 default: 3903 break; 3904 } 3905 3906 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections 3907 because such sections are not SEC_ALLOC and thus ld.so will 3908 not process them. */ 3909 if (unresolved_reloc 3910 && !((input_section->flags & SEC_DEBUGGING) != 0 3911 && h->def_dynamic) 3912 && _bfd_elf_section_offset (output_bfd, info, input_section, 3913 rel->r_offset) != (bfd_vma) -1) 3914 (*_bfd_error_handler) 3915 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), 3916 input_bfd, 3917 input_section, 3918 (long) rel->r_offset, 3919 howto->name, 3920 h->root.root.string); 3921 3922 r = bfd_reloc_continue; 3923 3924 /* Get the operand creation function, if any. */ 3925 create_func = reloc_to_create_func[r_type]; 3926 if (create_func == NULL) 3927 { 3928 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3929 contents, rel->r_offset, 3930 relocation, rel->r_addend); 3931 } 3932 else 3933 { 3934 if (howto->pc_relative) 3935 { 3936 relocation -= 3937 input_section->output_section->vma + input_section->output_offset; 3938 if (howto->pcrel_offset) 3939 relocation -= rel->r_offset; 3940 } 3941 3942 bfd_byte *data; 3943 3944 /* Add the relocation addend if any to the final target value */ 3945 relocation += rel->r_addend; 3946 3947 /* Do basic range checking */ 3948 r = bfd_check_overflow (howto->complain_on_overflow, 3949 howto->bitsize, 3950 howto->rightshift, 3951 TILEGX_ELF_WORD_BYTES (htab) * 8, 3952 relocation); 3953 3954 /* 3955 * Write the relocated value out into the raw section data. 3956 * Don't put a relocation out in the .rela section. 3957 */ 3958 tilegx_bundle_bits mask = create_func(-1); 3959 tilegx_bundle_bits value = create_func(relocation >> howto->rightshift); 3960 3961 /* Only touch bytes while the mask is not 0, so we 3962 don't write to out of bounds memory if this is actually 3963 a 16-bit switch instruction. */ 3964 for (data = contents + rel->r_offset; mask != 0; data++) 3965 { 3966 bfd_byte byte_mask = (bfd_byte)mask; 3967 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask); 3968 mask >>= 8; 3969 value >>= 8; 3970 } 3971 } 3972 3973 if (r != bfd_reloc_ok) 3974 { 3975 const char *msg = NULL; 3976 3977 switch (r) 3978 { 3979 case bfd_reloc_overflow: 3980 r = info->callbacks->reloc_overflow 3981 (info, (h ? &h->root : NULL), name, howto->name, 3982 (bfd_vma) 0, input_bfd, input_section, rel->r_offset); 3983 break; 3984 3985 case bfd_reloc_undefined: 3986 r = info->callbacks->undefined_symbol 3987 (info, name, input_bfd, input_section, rel->r_offset, 3988 TRUE); 3989 break; 3990 3991 case bfd_reloc_outofrange: 3992 msg = _("internal error: out of range error"); 3993 break; 3994 3995 case bfd_reloc_notsupported: 3996 msg = _("internal error: unsupported relocation error"); 3997 break; 3998 3999 case bfd_reloc_dangerous: 4000 msg = _("internal error: dangerous relocation"); 4001 break; 4002 4003 default: 4004 msg = _("internal error: unknown error"); 4005 break; 4006 } 4007 4008 if (msg) 4009 r = info->callbacks->warning 4010 (info, msg, name, input_bfd, input_section, rel->r_offset); 4011 4012 if (! r) 4013 return FALSE; 4014 } 4015 } 4016 4017 return TRUE; 4018 } 4019 4020 /* Finish up dynamic symbol handling. We set the contents of various 4021 dynamic sections here. */ 4022 4023 bfd_boolean 4024 tilegx_elf_finish_dynamic_symbol (bfd *output_bfd, 4025 struct bfd_link_info *info, 4026 struct elf_link_hash_entry *h, 4027 Elf_Internal_Sym *sym) 4028 { 4029 struct tilegx_elf_link_hash_table *htab; 4030 4031 htab = tilegx_elf_hash_table (info); 4032 BFD_ASSERT (htab != NULL); 4033 4034 if (h->plt.offset != (bfd_vma) -1) 4035 { 4036 asection *splt; 4037 asection *srela; 4038 asection *sgotplt; 4039 Elf_Internal_Rela rela; 4040 bfd_byte *loc; 4041 bfd_vma r_offset; 4042 const struct elf_backend_data *bed = get_elf_backend_data (output_bfd); 4043 4044 4045 int rela_index; 4046 4047 /* This symbol has an entry in the PLT. Set it up. */ 4048 4049 BFD_ASSERT (h->dynindx != -1); 4050 4051 splt = htab->elf.splt; 4052 srela = htab->elf.srelplt; 4053 sgotplt = htab->elf.sgotplt; 4054 4055 if (splt == NULL || srela == NULL) 4056 abort (); 4057 4058 /* Fill in the entry in the procedure linkage table. */ 4059 rela_index = tilegx_plt_entry_build (output_bfd, htab, splt, sgotplt, 4060 h->plt.offset, &r_offset); 4061 4062 /* Fill in the entry in the global offset table, which initially points 4063 to the beginning of the plt. */ 4064 TILEGX_ELF_PUT_WORD (htab, output_bfd, 4065 splt->output_section->vma + splt->output_offset, 4066 sgotplt->contents + r_offset); 4067 4068 /* Fill in the entry in the .rela.plt section. */ 4069 rela.r_offset = (sgotplt->output_section->vma 4070 + sgotplt->output_offset 4071 + r_offset); 4072 rela.r_addend = 0; 4073 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_JMP_SLOT); 4074 4075 loc = srela->contents + rela_index * TILEGX_ELF_RELA_BYTES (htab); 4076 bed->s->swap_reloca_out (output_bfd, &rela, loc); 4077 4078 if (!h->def_regular) 4079 { 4080 /* Mark the symbol as undefined, rather than as defined in 4081 the .plt section. Leave the value alone. */ 4082 sym->st_shndx = SHN_UNDEF; 4083 /* If the symbol is weak, we do need to clear the value. 4084 Otherwise, the PLT entry would provide a definition for 4085 the symbol even if the symbol wasn't defined anywhere, 4086 and so the symbol would never be NULL. */ 4087 if (!h->ref_regular_nonweak) 4088 sym->st_value = 0; 4089 } 4090 } 4091 4092 if (h->got.offset != (bfd_vma) -1 4093 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_GD 4094 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_IE) 4095 { 4096 asection *sgot; 4097 asection *srela; 4098 Elf_Internal_Rela rela; 4099 4100 /* This symbol has an entry in the GOT. Set it up. */ 4101 4102 sgot = htab->elf.sgot; 4103 srela = htab->elf.srelgot; 4104 BFD_ASSERT (sgot != NULL && srela != NULL); 4105 4106 rela.r_offset = (sgot->output_section->vma 4107 + sgot->output_offset 4108 + (h->got.offset &~ (bfd_vma) 1)); 4109 4110 /* If this is a -Bsymbolic link, and the symbol is defined 4111 locally, we just want to emit a RELATIVE reloc. Likewise if 4112 the symbol was forced to be local because of a version file. 4113 The entry in the global offset table will already have been 4114 initialized in the relocate_section function. */ 4115 if (info->shared 4116 && (info->symbolic || h->dynindx == -1) 4117 && h->def_regular) 4118 { 4119 asection *sec = h->root.u.def.section; 4120 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE); 4121 rela.r_addend = (h->root.u.def.value 4122 + sec->output_section->vma 4123 + sec->output_offset); 4124 } 4125 else 4126 { 4127 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_GLOB_DAT); 4128 rela.r_addend = 0; 4129 } 4130 4131 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 4132 sgot->contents + (h->got.offset & ~(bfd_vma) 1)); 4133 tilegx_elf_append_rela (output_bfd, srela, &rela); 4134 } 4135 4136 if (h->needs_copy) 4137 { 4138 asection *s; 4139 Elf_Internal_Rela rela; 4140 4141 /* This symbols needs a copy reloc. Set it up. */ 4142 BFD_ASSERT (h->dynindx != -1); 4143 4144 s = htab->srelbss; 4145 BFD_ASSERT (s != NULL); 4146 4147 rela.r_offset = (h->root.u.def.value 4148 + h->root.u.def.section->output_section->vma 4149 + h->root.u.def.section->output_offset); 4150 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_COPY); 4151 rela.r_addend = 0; 4152 tilegx_elf_append_rela (output_bfd, s, &rela); 4153 } 4154 4155 /* Mark some specially defined symbols as absolute. */ 4156 if (strcmp (h->root.root.string, "_DYNAMIC") == 0 4157 || (h == htab->elf.hgot || h == htab->elf.hplt)) 4158 sym->st_shndx = SHN_ABS; 4159 4160 return TRUE; 4161 } 4162 4163 /* Finish up the dynamic sections. */ 4164 4165 static bfd_boolean 4166 tilegx_finish_dyn (bfd *output_bfd, struct bfd_link_info *info, 4167 bfd *dynobj, asection *sdyn, 4168 asection *splt ATTRIBUTE_UNUSED) 4169 { 4170 struct tilegx_elf_link_hash_table *htab; 4171 const struct elf_backend_data *bed; 4172 bfd_byte *dyncon, *dynconend; 4173 size_t dynsize; 4174 4175 htab = tilegx_elf_hash_table (info); 4176 BFD_ASSERT (htab != NULL); 4177 bed = get_elf_backend_data (output_bfd); 4178 dynsize = bed->s->sizeof_dyn; 4179 dynconend = sdyn->contents + sdyn->size; 4180 4181 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize) 4182 { 4183 Elf_Internal_Dyn dyn; 4184 asection *s; 4185 4186 bed->s->swap_dyn_in (dynobj, dyncon, &dyn); 4187 4188 switch (dyn.d_tag) 4189 { 4190 case DT_PLTGOT: 4191 s = htab->elf.sgotplt; 4192 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 4193 break; 4194 case DT_JMPREL: 4195 s = htab->elf.srelplt; 4196 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 4197 break; 4198 case DT_PLTRELSZ: 4199 s = htab->elf.srelplt; 4200 dyn.d_un.d_val = s->size; 4201 break; 4202 default: 4203 continue; 4204 } 4205 4206 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon); 4207 } 4208 return TRUE; 4209 } 4210 4211 bfd_boolean 4212 tilegx_elf_finish_dynamic_sections (bfd *output_bfd, 4213 struct bfd_link_info *info) 4214 { 4215 bfd *dynobj; 4216 asection *sdyn; 4217 struct tilegx_elf_link_hash_table *htab; 4218 4219 htab = tilegx_elf_hash_table (info); 4220 BFD_ASSERT (htab != NULL); 4221 dynobj = htab->elf.dynobj; 4222 4223 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 4224 4225 if (elf_hash_table (info)->dynamic_sections_created) 4226 { 4227 asection *splt; 4228 bfd_boolean ret; 4229 4230 splt = htab->elf.splt; 4231 BFD_ASSERT (splt != NULL && sdyn != NULL); 4232 4233 ret = tilegx_finish_dyn (output_bfd, info, dynobj, sdyn, splt); 4234 4235 if (ret != TRUE) 4236 return ret; 4237 4238 /* Fill in the head and tail entries in the procedure linkage table. */ 4239 if (splt->size > 0) 4240 { 4241 memcpy (splt->contents, 4242 ABI_64_P (output_bfd) ? 4243 tilegx64_plt0_entry : tilegx32_plt0_entry, 4244 PLT_HEADER_SIZE); 4245 4246 memcpy (splt->contents + splt->size - PLT_TAIL_SIZE, 4247 ABI_64_P (output_bfd) ? 4248 tilegx64_plt_tail_entry : tilegx32_plt_tail_entry, 4249 PLT_TAIL_SIZE); 4250 } 4251 4252 elf_section_data (splt->output_section)->this_hdr.sh_entsize 4253 = PLT_ENTRY_SIZE; 4254 } 4255 4256 if (htab->elf.sgotplt) 4257 { 4258 if (bfd_is_abs_section (htab->elf.sgotplt->output_section)) 4259 { 4260 (*_bfd_error_handler) 4261 (_("discarded output section: `%A'"), htab->elf.sgotplt); 4262 return FALSE; 4263 } 4264 4265 if (htab->elf.sgotplt->size > 0) 4266 { 4267 /* Write the first two entries in .got.plt, needed for the dynamic 4268 linker. */ 4269 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) -1, 4270 htab->elf.sgotplt->contents); 4271 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) 0, 4272 htab->elf.sgotplt->contents 4273 + GOT_ENTRY_SIZE (htab)); 4274 } 4275 4276 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4277 GOT_ENTRY_SIZE (htab); 4278 } 4279 4280 if (htab->elf.sgot) 4281 { 4282 if (htab->elf.sgot->size > 0) 4283 { 4284 /* Set the first entry in the global offset table to the address of 4285 the dynamic section. */ 4286 bfd_vma val = (sdyn ? 4287 sdyn->output_section->vma + sdyn->output_offset : 4288 0); 4289 TILEGX_ELF_PUT_WORD (htab, output_bfd, val, 4290 htab->elf.sgot->contents); 4291 } 4292 4293 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4294 GOT_ENTRY_SIZE (htab); 4295 } 4296 4297 return TRUE; 4298 } 4299 4300 4301 4303 /* Return address for Ith PLT stub in section PLT, for relocation REL 4304 or (bfd_vma) -1 if it should not be included. */ 4305 4306 bfd_vma 4307 tilegx_elf_plt_sym_val (bfd_vma i, const asection *plt, 4308 const arelent *rel ATTRIBUTE_UNUSED) 4309 { 4310 return plt->vma + PLT_HEADER_SIZE + i * PLT_ENTRY_SIZE; 4311 } 4312 4313 enum elf_reloc_type_class 4314 tilegx_reloc_type_class (const Elf_Internal_Rela *rela) 4315 { 4316 switch ((int) TILEGX_ELF_R_TYPE (rela->r_info)) 4317 { 4318 case R_TILEGX_RELATIVE: 4319 return reloc_class_relative; 4320 case R_TILEGX_JMP_SLOT: 4321 return reloc_class_plt; 4322 case R_TILEGX_COPY: 4323 return reloc_class_copy; 4324 default: 4325 return reloc_class_normal; 4326 } 4327 } 4328 4329 int 4330 tilegx_additional_program_headers (bfd *abfd, 4331 struct bfd_link_info *info ATTRIBUTE_UNUSED) 4332 { 4333 /* Each .intrpt section specified by the user adds another PT_LOAD 4334 header since the sections are discontiguous. */ 4335 static const char intrpt_sections[4][9] = 4336 { 4337 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3" 4338 }; 4339 int count = 0; 4340 int i; 4341 4342 for (i = 0; i < 4; i++) 4343 { 4344 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]); 4345 if (sec != NULL && (sec->flags & SEC_LOAD) != 0) 4346 ++count; 4347 } 4348 4349 /* Add four "padding" headers in to leave room in case a custom linker 4350 script does something fancy. Otherwise ld complains that it ran 4351 out of program headers and refuses to link. */ 4352 count += 4; 4353 4354 return count; 4355 } 4356 4357 4358 bfd_boolean 4359 _bfd_tilegx_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) 4360 { 4361 const char *targ1 = bfd_get_target (ibfd); 4362 const char *targ2 = bfd_get_target (obfd); 4363 4364 if (strcmp (targ1, targ2) != 0) 4365 { 4366 (*_bfd_error_handler) 4367 (_("%B: Cannot link together %s and %s objects."), 4368 ibfd, targ1, targ2); 4369 bfd_set_error (bfd_error_bad_value); 4370 return FALSE; 4371 } 4372 4373 return TRUE; 4374 } 4375
Indexes created Tue Sep 15 00:24:42 UTC 2026