1/* TILE-Gx-specific support for ELF. 2 Copyright (C) 2011-2017 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 70static reloc_howto_type tilegx_elf_howto_table [] = 71{ 72 /* This reloc does nothing. */ 73 HOWTO (R_TILEGX_NONE, /* type */ 74 0, /* rightshift */ 75 3, /* size (0 = byte, 1 = short, 2 = long) */ 76 0, /* bitsize */ 77 FALSE, /* pc_relative */ 78 0, /* bitpos */ 79 complain_overflow_dont, /* complain_on_overflow */ 80 bfd_elf_generic_reloc, /* special_function */ 81 "R_TILEGX_NONE", /* name */ 82 FALSE, /* partial_inplace */ 83 0, /* src_mask */ 84 0, /* dst_mask */ 85 FALSE), /* pcrel_offset */ 86#ifdef BFD64 87 /* A 64 bit absolute relocation. */ 88 HOWTO (R_TILEGX_64, /* type */ 89 0, /* rightshift */ 90 4, /* size (0 = byte, 1 = short, 2 = long) */ 91 64, /* bitsize */ 92 FALSE, /* pc_relative */ 93 0, /* bitpos */ 94 complain_overflow_dont, /* complain_on_overflow */ 95 bfd_elf_generic_reloc, /* special_function */ 96 "R_TILEGX_64", /* name */ 97 FALSE, /* partial_inplace */ 98 0, /* src_mask */ 99 0xffffffffffffffffULL, /* dst_mask */ 100 FALSE), /* pcrel_offset */ 101#endif 102 /* A 32 bit absolute relocation. */ 103 HOWTO (R_TILEGX_32, /* type */ 104 0, /* rightshift */ 105 2, /* size (0 = byte, 1 = short, 2 = long) */ 106 32, /* bitsize */ 107 FALSE, /* pc_relative */ 108 0, /* bitpos */ 109 complain_overflow_dont, /* complain_on_overflow */ 110 bfd_elf_generic_reloc, /* special_function */ 111 "R_TILEGX_32", /* name */ 112 FALSE, /* partial_inplace */ 113 0, /* src_mask */ 114 0xffffffff, /* dst_mask */ 115 FALSE), /* pcrel_offset */ 116 117 /* A 16 bit absolute relocation. */ 118 HOWTO (R_TILEGX_16, /* type */ 119 0, /* rightshift */ 120 1, /* size (0 = byte, 1 = short, 2 = long) */ 121 16, /* bitsize */ 122 FALSE, /* pc_relative */ 123 0, /* bitpos */ 124 complain_overflow_bitfield, /* complain_on_overflow */ 125 bfd_elf_generic_reloc, /* special_function */ 126 "R_TILEGX_16", /* name */ 127 FALSE, /* partial_inplace */ 128 0, /* src_mask */ 129 0xffff, /* dst_mask */ 130 FALSE), /* pcrel_offset */ 131 132 /* An 8 bit absolute relocation. */ 133 HOWTO (R_TILEGX_8, /* type */ 134 0, /* rightshift */ 135 0, /* size (0 = byte, 1 = short, 2 = long) */ 136 8, /* bitsize */ 137 FALSE, /* pc_relative */ 138 0, /* bitpos */ 139 complain_overflow_unsigned, /* complain_on_overflow */ 140 bfd_elf_generic_reloc, /* special_function */ 141 "R_TILEGX_8", /* name */ 142 FALSE, /* partial_inplace */ 143 0, /* src_mask */ 144 0xff, /* dst_mask */ 145 FALSE), /* pcrel_offset */ 146#ifdef BFD64 147 /* A 64 bit pc-relative relocation. */ 148 HOWTO (R_TILEGX_64_PCREL,/* type */ 149 0, /* rightshift */ 150 4, /* size (0 = byte, 1 = short, 2 = long) */ 151 64, /* bitsize */ 152 TRUE, /* pc_relative */ 153 0, /* bitpos */ 154 complain_overflow_dont, /* complain_on_overflow */ 155 bfd_elf_generic_reloc, /* special_function */ 156 "R_TILEGX_32_PCREL", /* name */ 157 FALSE, /* partial_inplace */ 158 0, /* src_mask */ 159 0xffffffffffffffffULL, /* dst_mask */ 160 TRUE), /* pcrel_offset */ 161#endif 162 /* A 32 bit pc-relative relocation. */ 163 HOWTO (R_TILEGX_32_PCREL,/* type */ 164 0, /* rightshift */ 165 2, /* size (0 = byte, 1 = short, 2 = long) */ 166 32, /* bitsize */ 167 TRUE, /* pc_relative */ 168 0, /* bitpos */ 169 complain_overflow_dont, /* complain_on_overflow */ 170 bfd_elf_generic_reloc, /* special_function */ 171 "R_TILEGX_32_PCREL", /* name */ 172 FALSE, /* partial_inplace */ 173 0, /* src_mask */ 174 0xffffffff, /* dst_mask */ 175 TRUE), /* pcrel_offset */ 176 177 /* A 16 bit pc-relative relocation. */ 178 HOWTO (R_TILEGX_16_PCREL,/* type */ 179 0, /* rightshift */ 180 1, /* size (0 = byte, 1 = short, 2 = long) */ 181 16, /* bitsize */ 182 TRUE, /* pc_relative */ 183 0, /* bitpos */ 184 complain_overflow_signed, /* complain_on_overflow */ 185 bfd_elf_generic_reloc, /* special_function */ 186 "R_TILEGX_16_PCREL", /* name */ 187 FALSE, /* partial_inplace */ 188 0, /* src_mask */ 189 0xffff, /* dst_mask */ 190 TRUE), /* pcrel_offset */ 191 192 /* An 8 bit pc-relative relocation. */ 193 HOWTO (R_TILEGX_8_PCREL, /* type */ 194 0, /* rightshift */ 195 0, /* size (0 = byte, 1 = short, 2 = long) */ 196 8, /* bitsize */ 197 TRUE, /* pc_relative */ 198 0, /* bitpos */ 199 complain_overflow_signed, /* complain_on_overflow */ 200 bfd_elf_generic_reloc, /* special_function */ 201 "R_TILEGX_8_PCREL",/* name */ 202 FALSE, /* partial_inplace */ 203 0, /* src_mask */ 204 0xff, /* dst_mask */ 205 TRUE), /* pcrel_offset */ 206 207 /* A 16 bit relocation without overflow. */ 208 HOWTO (R_TILEGX_HW0, /* type */ 209 0, /* rightshift */ 210 1, /* size (0 = byte, 1 = short, 2 = long) */ 211 16, /* bitsize */ 212 FALSE, /* pc_relative */ 213 0, /* bitpos */ 214 complain_overflow_dont,/* complain_on_overflow */ 215 bfd_elf_generic_reloc, /* special_function */ 216 "R_TILEGX_HW0", /* name */ 217 FALSE, /* partial_inplace */ 218 0, /* src_mask */ 219 0xffff, /* dst_mask */ 220 FALSE), /* pcrel_offset */ 221 222 /* A 16 bit relocation without overflow. */ 223 HOWTO (R_TILEGX_HW1, /* type */ 224 16, /* rightshift */ 225 1, /* size (0 = byte, 1 = short, 2 = long) */ 226 16, /* bitsize */ 227 FALSE, /* pc_relative */ 228 0, /* bitpos */ 229 complain_overflow_dont,/* complain_on_overflow */ 230 bfd_elf_generic_reloc, /* special_function */ 231 "R_TILEGX_HW1", /* name */ 232 FALSE, /* partial_inplace */ 233 0, /* src_mask */ 234 0xffff, /* dst_mask */ 235 FALSE), /* pcrel_offset */ 236 237 /* A 16 bit relocation without overflow. */ 238 HOWTO (R_TILEGX_HW2, /* type */ 239 32, /* rightshift */ 240 1, /* size (0 = byte, 1 = short, 2 = long) */ 241 16, /* bitsize */ 242 FALSE, /* pc_relative */ 243 0, /* bitpos */ 244 complain_overflow_dont,/* complain_on_overflow */ 245 bfd_elf_generic_reloc, /* special_function */ 246 "R_TILEGX_HW2", /* name */ 247 FALSE, /* partial_inplace */ 248 0, /* src_mask */ 249 0xffff, /* dst_mask */ 250 FALSE), /* pcrel_offset */ 251 252 /* A 16 bit relocation without overflow. */ 253 HOWTO (R_TILEGX_HW3, /* type */ 254 48, /* rightshift */ 255 1, /* size (0 = byte, 1 = short, 2 = long) */ 256 16, /* bitsize */ 257 FALSE, /* pc_relative */ 258 0, /* bitpos */ 259 complain_overflow_dont,/* complain_on_overflow */ 260 bfd_elf_generic_reloc, /* special_function */ 261 "R_TILEGX_HW3", /* name */ 262 FALSE, /* partial_inplace */ 263 0, /* src_mask */ 264 0xffff, /* dst_mask */ 265 FALSE), /* pcrel_offset */ 266 267 /* A 16 bit relocation with overflow. */ 268 HOWTO (R_TILEGX_HW0_LAST, /* type */ 269 0, /* rightshift */ 270 1, /* size (0 = byte, 1 = short, 2 = long) */ 271 16, /* bitsize */ 272 FALSE, /* pc_relative */ 273 0, /* bitpos */ 274 complain_overflow_signed,/* complain_on_overflow */ 275 bfd_elf_generic_reloc, /* special_function */ 276 "R_TILEGX_HW0_LAST", /* name */ 277 FALSE, /* partial_inplace */ 278 0, /* src_mask */ 279 0xffff, /* dst_mask */ 280 FALSE), /* pcrel_offset */ 281 282 /* A 16 bit relocation with overflow. */ 283 HOWTO (R_TILEGX_HW1_LAST, /* type */ 284 16, /* rightshift */ 285 1, /* size (0 = byte, 1 = short, 2 = long) */ 286 16, /* bitsize */ 287 FALSE, /* pc_relative */ 288 0, /* bitpos */ 289 complain_overflow_signed,/* complain_on_overflow */ 290 bfd_elf_generic_reloc, /* special_function */ 291 "R_TILEGX_HW1_LAST", /* name */ 292 FALSE, /* partial_inplace */ 293 0, /* src_mask */ 294 0xffff, /* dst_mask */ 295 FALSE), /* pcrel_offset */ 296 297 /* A 16 bit relocation with overflow. */ 298 HOWTO (R_TILEGX_HW2_LAST, /* type */ 299 32, /* rightshift */ 300 1, /* size (0 = byte, 1 = short, 2 = long) */ 301 16, /* bitsize */ 302 FALSE, /* pc_relative */ 303 0, /* bitpos */ 304 complain_overflow_signed,/* complain_on_overflow */ 305 bfd_elf_generic_reloc, /* special_function */ 306 "R_TILEGX_HW2_LAST", /* name */ 307 FALSE, /* partial_inplace */ 308 0, /* src_mask */ 309 0xffff, /* dst_mask */ 310 FALSE), /* pcrel_offset */ 311 312 HOWTO (R_TILEGX_COPY, /* type */ 313 0, /* rightshift */ 314 0, /* size (0 = byte, 1 = short, 2 = long) */ 315 0, /* bitsize */ 316 FALSE, /* pc_relative */ 317 0, /* bitpos */ 318 complain_overflow_dont, /* complain_on_overflow */ 319 bfd_elf_generic_reloc, /* special_function */ 320 "R_TILEGX_COPY", /* name */ 321 FALSE, /* partial_inplace */ 322 0, /* src_mask */ 323 0, /* dst_mask */ 324 TRUE), /* pcrel_offset */ 325 326 HOWTO (R_TILEGX_GLOB_DAT, /* type */ 327 0, /* rightshift */ 328 0, /* size (0 = byte, 1 = short, 2 = long) */ 329 0, /* bitsize */ 330 FALSE, /* pc_relative */ 331 0, /* bitpos */ 332 complain_overflow_dont, /* complain_on_overflow */ 333 bfd_elf_generic_reloc, /* special_function */ 334 "R_TILEGX_GLOB_DAT", /* name */ 335 FALSE, /* partial_inplace */ 336 0, /* src_mask */ 337 0, /* dst_mask */ 338 TRUE), /* pcrel_offset */ 339 340 HOWTO (R_TILEGX_JMP_SLOT, /* type */ 341 0, /* rightshift */ 342 0, /* size (0 = byte, 1 = short, 2 = long) */ 343 0, /* bitsize */ 344 FALSE, /* pc_relative */ 345 0, /* bitpos */ 346 complain_overflow_dont, /* complain_on_overflow */ 347 bfd_elf_generic_reloc, /* special_function */ 348 "R_TILEGX_JMP_SLOT", /* name */ 349 FALSE, /* partial_inplace */ 350 0, /* src_mask */ 351 0, /* dst_mask */ 352 TRUE), /* pcrel_offset */ 353 354 HOWTO (R_TILEGX_RELATIVE, /* type */ 355 0, /* rightshift */ 356 0, /* size (0 = byte, 1 = short, 2 = long) */ 357 0, /* bitsize */ 358 FALSE, /* pc_relative */ 359 0, /* bitpos */ 360 complain_overflow_dont, /* complain_on_overflow */ 361 bfd_elf_generic_reloc, /* special_function */ 362 "R_TILEGX_RELATIVE", /* name */ 363 FALSE, /* partial_inplace */ 364 0, /* src_mask */ 365 0, /* dst_mask */ 366 TRUE), /* pcrel_offset */ 367 368 HOWTO (R_TILEGX_BROFF_X1, /* type */ 369 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ 370 2, /* size (0 = byte, 1 = short, 2 = long) */ 371 17, /* bitsize */ 372 TRUE, /* pc_relative */ 373 0, /* bitpos */ 374 complain_overflow_signed, /* complain_on_overflow */ 375 bfd_elf_generic_reloc, /* special_function */ 376 "R_TILEGX_BROFF_X1", /* name */ 377 FALSE, /* partial_inplace */ 378 0, /* src_mask */ 379 -1, /* dst_mask */ 380 TRUE), /* pcrel_offset */ 381 382 HOWTO (R_TILEGX_JUMPOFF_X1, /* type */ 383 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ 384 2, /* size (0 = byte, 1 = short, 2 = long) */ 385 27, /* bitsize */ 386 TRUE, /* pc_relative */ 387 0, /* bitpos */ 388 complain_overflow_signed,/* complain_on_overflow */ 389 bfd_elf_generic_reloc, /* special_function */ 390 "R_TILEGX_JUMPOFF_X1", /* name */ 391 FALSE, /* partial_inplace */ 392 0, /* src_mask */ 393 -1, /* dst_mask */ 394 TRUE), /* pcrel_offset */ 395 396 HOWTO (R_TILEGX_JUMPOFF_X1_PLT, /* type */ 397 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ 398 2, /* size (0 = byte, 1 = short, 2 = long) */ 399 27, /* bitsize */ 400 TRUE, /* pc_relative */ 401 0, /* bitpos */ 402 complain_overflow_signed,/* complain_on_overflow */ 403 bfd_elf_generic_reloc, /* special_function */ 404 "R_TILEGX_JUMPOFF_X1_PLT", /* name */ 405 FALSE, /* partial_inplace */ 406 0, /* src_mask */ 407 -1, /* dst_mask */ 408 TRUE), /* pcrel_offset */ 409 410#define TILEGX_IMM_HOWTO(name, size, bitsize) \ 411 HOWTO (name, 0, size, bitsize, FALSE, 0, \ 412 complain_overflow_signed, bfd_elf_generic_reloc, \ 413 #name, FALSE, 0, -1, FALSE) 414 415#define TILEGX_UIMM_HOWTO(name, size, bitsize) \ 416 HOWTO (name, 0, size, bitsize, FALSE, 0, \ 417 complain_overflow_unsigned, bfd_elf_generic_reloc, \ 418 #name, FALSE, 0, -1, FALSE) 419 420 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0, 0, 8), 421 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0, 0, 8), 422 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1, 0, 8), 423 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1, 0, 8), 424 TILEGX_IMM_HOWTO(R_TILEGX_DEST_IMM8_X1, 0, 8), 425 426 TILEGX_UIMM_HOWTO(R_TILEGX_MT_IMM14_X1, 1, 14), 427 TILEGX_UIMM_HOWTO(R_TILEGX_MF_IMM14_X1, 1, 14), 428 429 TILEGX_UIMM_HOWTO(R_TILEGX_MMSTART_X0, 0, 6), 430 TILEGX_UIMM_HOWTO(R_TILEGX_MMEND_X0, 0, 6), 431 432 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_X0, 0, 6), 433 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_X1, 0, 6), 434 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_Y0, 0, 6), 435 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_Y1, 0, 6), 436 437#define TILEGX_IMM16_HOWTO(name, rshift) \ 438 HOWTO (name, rshift, 1, 16, FALSE, 0, \ 439 complain_overflow_dont, bfd_elf_generic_reloc, \ 440 #name, FALSE, 0, 0xffff, FALSE) 441 442 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0, 0), 443 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0, 0), 444 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW1, 16), 445 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW1, 16), 446 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW2, 32), 447 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW2, 32), 448 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW3, 48), 449 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW3, 48), 450 451#define TILEGX_IMM16_HOWTO_LAST(name, rshift) \ 452 HOWTO (name, rshift, 1, 16, FALSE, 0, \ 453 complain_overflow_signed, bfd_elf_generic_reloc, \ 454 #name, FALSE, 0, 0xffff, FALSE) 455 456 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST, 0), 457 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST, 0), 458 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST, 16), 459 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST, 16), 460 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW2_LAST, 32), 461 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW2_LAST, 32), 462 463 /* PC-relative offsets. */ 464 465#define TILEGX_IMM16_HOWTO_PCREL(name, rshift) \ 466 HOWTO (name, rshift, 1, 16, TRUE, 0, \ 467 complain_overflow_dont, bfd_elf_generic_reloc, \ 468 #name, FALSE, 0, 0xffff, TRUE) 469 470 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW0_PCREL, 0), 471 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW0_PCREL, 0), 472 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW1_PCREL, 16), 473 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW1_PCREL, 16), 474 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW2_PCREL, 32), 475 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW2_PCREL, 32), 476 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW3_PCREL, 48), 477 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW3_PCREL, 48), 478 479#define TILEGX_IMM16_HOWTO_LAST_PCREL(name, rshift) \ 480 HOWTO (name, rshift, 1, 16, TRUE, 0, \ 481 complain_overflow_signed, bfd_elf_generic_reloc, \ 482 #name, FALSE, 0, 0xffff, TRUE) 483 484 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW0_LAST_PCREL, 0), 485 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW0_LAST_PCREL, 0), 486 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW1_LAST_PCREL, 16), 487 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW1_LAST_PCREL, 16), 488 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW2_LAST_PCREL, 32), 489 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW2_LAST_PCREL, 32), 490 491 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_GOT, 0), 492 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_GOT, 0), 493 494 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW0_PLT_PCREL, 0), 495 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW0_PLT_PCREL, 0), 496 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW1_PLT_PCREL, 16), 497 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW1_PLT_PCREL, 16), 498 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW2_PLT_PCREL, 32), 499 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW2_PLT_PCREL, 32), 500 501 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_GOT, 0), 502 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_GOT, 0), 503 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_GOT, 16), 504 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_GOT, 16), 505 506 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW3_PLT_PCREL, 48), 507 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW3_PLT_PCREL, 48), 508 509 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_TLS_GD, 0), 510 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_TLS_GD, 0), 511 512 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_TLS_LE, 0), 513 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_TLS_LE, 0), 514 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE, 0), 515 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE, 0), 516 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE, 16), 517 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE, 16), 518 519 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD, 0), 520 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD, 0), 521 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD, 16), 522 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD, 16), 523 EMPTY_HOWTO (90), 524 EMPTY_HOWTO (91), 525 526#define TILEGX_IMM16_HOWTO_TLS_IE(name, rshift) \ 527 HOWTO (name, rshift, 1, 16, FALSE, 0, \ 528 complain_overflow_dont, bfd_elf_generic_reloc, \ 529 #name, FALSE, 0, 0xffff, TRUE) 530 531 TILEGX_IMM16_HOWTO_TLS_IE (R_TILEGX_IMM16_X0_HW0_TLS_IE, 0), 532 TILEGX_IMM16_HOWTO_TLS_IE (R_TILEGX_IMM16_X1_HW0_TLS_IE, 0), 533 534 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL, 0), 535 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL, 0), 536 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL, 16), 537 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL, 16), 538 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL, 32), 539 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL, 32), 540 541#define TILEGX_IMM16_HOWTO_LAST_TLS_IE(name, rshift) \ 542 HOWTO (name, rshift, 1, 16, FALSE, 0, \ 543 complain_overflow_signed, bfd_elf_generic_reloc, \ 544 #name, FALSE, 0, 0xffff, TRUE) 545 546 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE, 0), 547 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE, 0), 548 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE, 16), 549 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE, 16), 550 EMPTY_HOWTO (104), 551 EMPTY_HOWTO (105), 552 553 HOWTO(R_TILEGX_TLS_DTPMOD64, 0, 0, 0, FALSE, 0, complain_overflow_dont, 554 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPMOD64", 555 FALSE, 0, 0, TRUE), 556 HOWTO(R_TILEGX_TLS_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, 557 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPOFF64", 558 FALSE, 0, -1, TRUE), 559 HOWTO(R_TILEGX_TLS_TPOFF64, 0, 0, 0, FALSE, 0, complain_overflow_dont, 560 bfd_elf_generic_reloc, "R_TILEGX_TLS_TPOFF64", 561 FALSE, 0, 0, TRUE), 562 563 HOWTO(R_TILEGX_TLS_DTPMOD32, 0, 0, 0, FALSE, 0, complain_overflow_dont, 564 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPMOD32", 565 FALSE, 0, 0, TRUE), 566 HOWTO(R_TILEGX_TLS_DTPOFF32, 0, 4, 32, FALSE, 0, complain_overflow_bitfield, 567 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPOFF32", 568 FALSE, 0, -1, TRUE), 569 HOWTO(R_TILEGX_TLS_TPOFF32, 0, 0, 0, FALSE, 0, complain_overflow_dont, 570 bfd_elf_generic_reloc, "R_TILEGX_TLS_TPOFF32", 571 FALSE, 0, 0, TRUE), 572 573 HOWTO (R_TILEGX_TLS_GD_CALL, /* type */ 574 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ 575 2, /* size (0 = byte, 1 = short, 2 = long) */ 576 27, /* bitsize */ 577 TRUE, /* pc_relative */ 578 0, /* bitpos */ 579 complain_overflow_signed,/* complain_on_overflow */ 580 bfd_elf_generic_reloc, /* special_function */ 581 "R_TILEGX_TLS_GD_CALL", /* name */ 582 FALSE, /* partial_inplace */ 583 0, /* src_mask */ 584 -1, /* dst_mask */ 585 TRUE), /* pcrel_offset */ 586 587 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0_TLS_GD_ADD, 0, 8), 588 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_GD_ADD, 0, 8), 589 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_GD_ADD, 0, 8), 590 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_GD_ADD, 0, 8), 591 TILEGX_IMM_HOWTO(R_TILEGX_TLS_IE_LOAD, 0, 8), 592 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0_TLS_ADD, 0, 8), 593 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_ADD, 0, 8), 594 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_ADD, 0, 8), 595 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_ADD, 0, 8), 596}; 597 598static reloc_howto_type tilegx_elf_howto_table2 [] = 599{ 600 /* GNU extension to record C++ vtable hierarchy */ 601 HOWTO (R_TILEGX_GNU_VTINHERIT, /* type */ 602 0, /* rightshift */ 603 4, /* size (0 = byte, 1 = short, 2 = long) */ 604 0, /* bitsize */ 605 FALSE, /* pc_relative */ 606 0, /* bitpos */ 607 complain_overflow_dont, /* complain_on_overflow */ 608 NULL, /* special_function */ 609 "R_TILEGX_GNU_VTINHERIT", /* name */ 610 FALSE, /* partial_inplace */ 611 0, /* src_mask */ 612 0, /* dst_mask */ 613 FALSE), /* pcrel_offset */ 614 615 /* GNU extension to record C++ vtable member usage */ 616 HOWTO (R_TILEGX_GNU_VTENTRY, /* type */ 617 0, /* rightshift */ 618 4, /* size (0 = byte, 1 = short, 2 = long) */ 619 0, /* bitsize */ 620 FALSE, /* pc_relative */ 621 0, /* bitpos */ 622 complain_overflow_dont, /* complain_on_overflow */ 623 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 624 "R_TILEGX_GNU_VTENTRY", /* name */ 625 FALSE, /* partial_inplace */ 626 0, /* src_mask */ 627 0, /* dst_mask */ 628 FALSE), /* pcrel_offset */ 629 630}; 631 632/* Map BFD reloc types to TILEGX ELF reloc types. */ 633 634typedef 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 641static const reloc_map tilegx_reloc_map [] = 642{ 643#define TH_REMAP(bfd, tilegx) \ 644 { bfd, tilegx, tilegx_elf_howto_table }, 645 646 /* Standard relocations. */ 647 TH_REMAP (BFD_RELOC_NONE, R_TILEGX_NONE) 648 TH_REMAP (BFD_RELOC_64, R_TILEGX_64) 649 TH_REMAP (BFD_RELOC_32, R_TILEGX_32) 650 TH_REMAP (BFD_RELOC_16, R_TILEGX_16) 651 TH_REMAP (BFD_RELOC_8, R_TILEGX_8) 652 TH_REMAP (BFD_RELOC_64_PCREL, R_TILEGX_64_PCREL) 653 TH_REMAP (BFD_RELOC_32_PCREL, R_TILEGX_32_PCREL) 654 TH_REMAP (BFD_RELOC_16_PCREL, R_TILEGX_16_PCREL) 655 TH_REMAP (BFD_RELOC_8_PCREL, R_TILEGX_8_PCREL) 656 657#define SIMPLE_REMAP(t) TH_REMAP (BFD_RELOC_##t, R_##t) 658 659 /* Custom relocations. */ 660 SIMPLE_REMAP (TILEGX_HW0) 661 SIMPLE_REMAP (TILEGX_HW1) 662 SIMPLE_REMAP (TILEGX_HW2) 663 SIMPLE_REMAP (TILEGX_HW3) 664 SIMPLE_REMAP (TILEGX_HW0_LAST) 665 SIMPLE_REMAP (TILEGX_HW1_LAST) 666 SIMPLE_REMAP (TILEGX_HW2_LAST) 667 SIMPLE_REMAP (TILEGX_COPY) 668 SIMPLE_REMAP (TILEGX_GLOB_DAT) 669 SIMPLE_REMAP (TILEGX_JMP_SLOT) 670 SIMPLE_REMAP (TILEGX_RELATIVE) 671 SIMPLE_REMAP (TILEGX_BROFF_X1) 672 SIMPLE_REMAP (TILEGX_JUMPOFF_X1) 673 SIMPLE_REMAP (TILEGX_JUMPOFF_X1_PLT) 674 SIMPLE_REMAP (TILEGX_IMM8_X0) 675 SIMPLE_REMAP (TILEGX_IMM8_Y0) 676 SIMPLE_REMAP (TILEGX_IMM8_X1) 677 SIMPLE_REMAP (TILEGX_IMM8_Y1) 678 SIMPLE_REMAP (TILEGX_DEST_IMM8_X1) 679 SIMPLE_REMAP (TILEGX_MT_IMM14_X1) 680 SIMPLE_REMAP (TILEGX_MF_IMM14_X1) 681 SIMPLE_REMAP (TILEGX_MMSTART_X0) 682 SIMPLE_REMAP (TILEGX_MMEND_X0) 683 SIMPLE_REMAP (TILEGX_SHAMT_X0) 684 SIMPLE_REMAP (TILEGX_SHAMT_X1) 685 SIMPLE_REMAP (TILEGX_SHAMT_Y0) 686 SIMPLE_REMAP (TILEGX_SHAMT_Y1) 687 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0) 688 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0) 689 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1) 690 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1) 691 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2) 692 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2) 693 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3) 694 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3) 695 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST) 696 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST) 697 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST) 698 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST) 699 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST) 700 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST) 701 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_PCREL) 702 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_PCREL) 703 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_PCREL) 704 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_PCREL) 705 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_PCREL) 706 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_PCREL) 707 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3_PCREL) 708 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3_PCREL) 709 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_PCREL) 710 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_PCREL) 711 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_PCREL) 712 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_PCREL) 713 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST_PCREL) 714 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST_PCREL) 715 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_GOT) 716 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_GOT) 717 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_PLT_PCREL) 718 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_PLT_PCREL) 719 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_PLT_PCREL) 720 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_PLT_PCREL) 721 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_PLT_PCREL) 722 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_PLT_PCREL) 723 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_GOT) 724 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_GOT) 725 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_GOT) 726 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_GOT) 727 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3_PLT_PCREL) 728 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3_PLT_PCREL) 729 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_GD) 730 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_GD) 731 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_LE) 732 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_LE) 733 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_LE) 734 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_LE) 735 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_LE) 736 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_LE) 737 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_GD) 738 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_GD) 739 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_GD) 740 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_GD) 741 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_IE) 742 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_IE) 743 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL) 744 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL) 745 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL) 746 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL) 747 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL) 748 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL) 749 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_IE) 750 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_IE) 751 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_IE) 752 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_IE) 753 754 SIMPLE_REMAP (TILEGX_TLS_DTPMOD64) 755 SIMPLE_REMAP (TILEGX_TLS_DTPOFF64) 756 SIMPLE_REMAP (TILEGX_TLS_TPOFF64) 757 758 SIMPLE_REMAP (TILEGX_TLS_DTPMOD32) 759 SIMPLE_REMAP (TILEGX_TLS_DTPOFF32) 760 SIMPLE_REMAP (TILEGX_TLS_TPOFF32) 761 762 SIMPLE_REMAP (TILEGX_TLS_GD_CALL) 763 SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_GD_ADD) 764 SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_GD_ADD) 765 SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_GD_ADD) 766 SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_GD_ADD) 767 SIMPLE_REMAP (TILEGX_TLS_IE_LOAD) 768 SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_ADD) 769 SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_ADD) 770 SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_ADD) 771 SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_ADD) 772 773#undef SIMPLE_REMAP 774#undef TH_REMAP 775 776 { BFD_RELOC_VTABLE_INHERIT, R_TILEGX_GNU_VTINHERIT, tilegx_elf_howto_table2 }, 777 { BFD_RELOC_VTABLE_ENTRY, R_TILEGX_GNU_VTENTRY, tilegx_elf_howto_table2 }, 778}; 779 780 781 782/* The TILE-Gx linker needs to keep track of the number of relocs that it 783 decides to copy as dynamic relocs in check_relocs for each symbol. 784 This is so that it can later discard them if they are found to be 785 unnecessary. We store the information in a field extending the 786 regular ELF linker hash table. */ 787 788struct tilegx_elf_dyn_relocs 789{ 790 struct tilegx_elf_dyn_relocs *next; 791 792 /* The input section of the reloc. */ 793 asection *sec; 794 795 /* Total number of relocs copied for the input section. */ 796 bfd_size_type count; 797 798 /* Number of pc-relative relocs copied for the input section. */ 799 bfd_size_type pc_count; 800}; 801 802/* TILEGX ELF linker hash entry. */ 803 804struct tilegx_elf_link_hash_entry 805{ 806 struct elf_link_hash_entry elf; 807 808 /* Track dynamic relocs copied for this symbol. */ 809 struct tilegx_elf_dyn_relocs *dyn_relocs; 810 811#define GOT_UNKNOWN 0 812#define GOT_NORMAL 1 813#define GOT_TLS_GD 2 814#define GOT_TLS_IE 4 815 unsigned char tls_type; 816}; 817 818#define tilegx_elf_hash_entry(ent) \ 819 ((struct tilegx_elf_link_hash_entry *)(ent)) 820 821struct _bfd_tilegx_elf_obj_tdata 822{ 823 struct elf_obj_tdata root; 824 825 /* tls_type for each local got entry. */ 826 char *local_got_tls_type; 827}; 828 829#define _bfd_tilegx_elf_tdata(abfd) \ 830 ((struct _bfd_tilegx_elf_obj_tdata *) (abfd)->tdata.any) 831 832#define _bfd_tilegx_elf_local_got_tls_type(abfd) \ 833 (_bfd_tilegx_elf_tdata (abfd)->local_got_tls_type) 834 835#define is_tilegx_elf(bfd) \ 836 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ 837 && elf_tdata (bfd) != NULL \ 838 && elf_object_id (bfd) == TILEGX_ELF_DATA) 839 840#include "elf/common.h" 841#include "elf/internal.h" 842 843struct tilegx_elf_link_hash_table 844{ 845 struct elf_link_hash_table elf; 846 847 int bytes_per_word; 848 int word_align_power; 849 int bytes_per_rela; 850 int dtpmod_reloc; 851 int dtpoff_reloc; 852 int tpoff_reloc; 853 bfd_vma (*r_info) (Elf_Internal_Rela *, bfd_vma, bfd_vma); 854 bfd_vma (*r_symndx) (bfd_vma); 855 void (*put_word) (bfd *, bfd_vma, void *); 856 const char *dynamic_interpreter; 857 858 /* Whether LE transition has been disabled for some of the 859 sections. */ 860 bfd_boolean disable_le_transition; 861 862 /* Small local sym to section mapping cache. */ 863 struct sym_cache sym_cache; 864}; 865 866 867/* Get the Tile ELF linker hash table from a link_info structure. */ 868#define tilegx_elf_hash_table(p) \ 869 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 870 == TILEGX_ELF_DATA ? ((struct tilegx_elf_link_hash_table *) ((p)->hash)) : NULL) 871 872#ifdef BFD64 873static bfd_vma 874tilegx_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED, 875 bfd_vma rel_index, 876 bfd_vma type) 877{ 878 return ELF64_R_INFO (rel_index, type); 879} 880 881static bfd_vma 882tilegx_elf_r_symndx_64 (bfd_vma r_info) 883{ 884 return ELF64_R_SYM (r_info); 885} 886 887static void 888tilegx_put_word_64 (bfd *abfd, bfd_vma val, void *ptr) 889{ 890 bfd_put_64 (abfd, val, ptr); 891} 892#endif /* BFD64 */ 893 894static bfd_vma 895tilegx_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED, 896 bfd_vma rel_index, 897 bfd_vma type) 898{ 899 return ELF32_R_INFO (rel_index, type); 900} 901 902static bfd_vma 903tilegx_elf_r_symndx_32 (bfd_vma r_info) 904{ 905 return ELF32_R_SYM (r_info); 906} 907 908static void 909tilegx_put_word_32 (bfd *abfd, bfd_vma val, void *ptr) 910{ 911 bfd_put_32 (abfd, val, ptr); 912} 913 914reloc_howto_type * 915tilegx_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, 916 bfd_reloc_code_real_type code) 917{ 918 unsigned int i; 919 920 for (i = ARRAY_SIZE (tilegx_reloc_map); i--;) 921 { 922 const reloc_map * entry; 923 924 entry = tilegx_reloc_map + i; 925 926 if (entry->bfd_reloc_val == code) 927 return entry->table + (entry->tilegx_reloc_val 928 - entry->table[0].type); 929 } 930 931 return NULL; 932} 933 934reloc_howto_type * 935tilegx_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 936 const char *r_name) 937{ 938 unsigned int i; 939 940 for (i = 0; 941 i < (sizeof (tilegx_elf_howto_table) 942 / sizeof (tilegx_elf_howto_table[0])); 943 i++) 944 if (tilegx_elf_howto_table[i].name != NULL 945 && strcasecmp (tilegx_elf_howto_table[i].name, r_name) == 0) 946 return &tilegx_elf_howto_table[i]; 947 948 return NULL; 949} 950 951void 952tilegx_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, 953 arelent *cache_ptr, 954 Elf_Internal_Rela *dst) 955{ 956 unsigned int r_type = TILEGX_ELF_R_TYPE (dst->r_info); 957 958 if (r_type <= (unsigned int) R_TILEGX_IMM8_Y1_TLS_ADD) 959 cache_ptr->howto = &tilegx_elf_howto_table [r_type]; 960 else if (r_type - R_TILEGX_GNU_VTINHERIT 961 <= (unsigned int) R_TILEGX_GNU_VTENTRY) 962 cache_ptr->howto 963 = &tilegx_elf_howto_table2 [r_type - R_TILEGX_GNU_VTINHERIT]; 964 else 965 abort (); 966} 967 968typedef tilegx_bundle_bits (*tilegx_create_func)(int); 969 970static const tilegx_create_func reloc_to_create_func[] = 971{ 972 /* The first twenty relocation types don't correspond to operands */ 973 NULL, 974 NULL, 975 NULL, 976 NULL, 977 NULL, 978 NULL, 979 NULL, 980 NULL, 981 NULL, 982 NULL, 983 NULL, 984 NULL, 985 NULL, 986 NULL, 987 NULL, 988 NULL, 989 NULL, 990 NULL, 991 NULL, 992 NULL, 993 994 /* The remaining relocations are used for immediate operands */ 995 create_BrOff_X1, 996 create_JumpOff_X1, 997 create_JumpOff_X1, 998 create_Imm8_X0, 999 create_Imm8_Y0, 1000 create_Imm8_X1, 1001 create_Imm8_Y1, 1002 create_Dest_Imm8_X1, 1003 create_MT_Imm14_X1, 1004 create_MF_Imm14_X1, 1005 create_BFStart_X0, 1006 create_BFEnd_X0, 1007 create_ShAmt_X0, 1008 create_ShAmt_X1, 1009 create_ShAmt_Y0, 1010 create_ShAmt_Y1, 1011 create_Imm16_X0, 1012 create_Imm16_X1, 1013 create_Imm16_X0, 1014 create_Imm16_X1, 1015 create_Imm16_X0, 1016 create_Imm16_X1, 1017 create_Imm16_X0, 1018 create_Imm16_X1, 1019 create_Imm16_X0, 1020 create_Imm16_X1, 1021 create_Imm16_X0, 1022 create_Imm16_X1, 1023 create_Imm16_X0, 1024 create_Imm16_X1, 1025 create_Imm16_X0, 1026 create_Imm16_X1, 1027 create_Imm16_X0, 1028 create_Imm16_X1, 1029 create_Imm16_X0, 1030 create_Imm16_X1, 1031 create_Imm16_X0, 1032 create_Imm16_X1, 1033 create_Imm16_X0, 1034 create_Imm16_X1, 1035 create_Imm16_X0, 1036 create_Imm16_X1, 1037 create_Imm16_X0, 1038 create_Imm16_X1, 1039 create_Imm16_X0, 1040 create_Imm16_X1, 1041 create_Imm16_X0, 1042 create_Imm16_X1, 1043 create_Imm16_X0, 1044 create_Imm16_X1, 1045 create_Imm16_X0, 1046 create_Imm16_X1, 1047 create_Imm16_X0, 1048 create_Imm16_X1, 1049 create_Imm16_X0, 1050 create_Imm16_X1, 1051 create_Imm16_X0, 1052 create_Imm16_X1, 1053 create_Imm16_X0, 1054 create_Imm16_X1, 1055 create_Imm16_X0, 1056 create_Imm16_X1, 1057 create_Imm16_X0, 1058 create_Imm16_X1, 1059 create_Imm16_X0, 1060 create_Imm16_X1, 1061 create_Imm16_X0, 1062 create_Imm16_X1, 1063 create_Imm16_X0, 1064 create_Imm16_X1, 1065 NULL, 1066 NULL, 1067 create_Imm16_X0, 1068 create_Imm16_X1, 1069 create_Imm16_X0, 1070 create_Imm16_X1, 1071 create_Imm16_X0, 1072 create_Imm16_X1, 1073 create_Imm16_X0, 1074 create_Imm16_X1, 1075 create_Imm16_X0, 1076 create_Imm16_X1, 1077 create_Imm16_X0, 1078 create_Imm16_X1, 1079}; 1080 1081static void 1082tilegx_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel) 1083{ 1084 const struct elf_backend_data *bed; 1085 bfd_byte *loc; 1086 1087 bed = get_elf_backend_data (abfd); 1088 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela); 1089 bed->s->swap_reloca_out (abfd, rel, loc); 1090} 1091 1092/* PLT/GOT stuff */ 1093 1094/* The procedure linkage table starts with the following header: 1095 1096 ld_add r28, r27, 8 1097 ld r27, r27 1098 { 1099 jr r27 1100 info 10 ## SP not offset, return PC in LR 1101 } 1102 1103 Subsequent entries are the following, jumping to the header at the end: 1104 1105 { 1106 moveli r28, <_GLOBAL_OFFSET_TABLE_ - 1f + MY_GOT_OFFSET> 1107 lnk r26 1108 } 11091: 1110 { 1111 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b> 1112 shl16insli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET> 1113 } 1114 { 1115 add r28, r26, r28 1116 shl16insli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b> 1117 } 1118 { 1119 add r27, r26, r27 1120 ld r28, r28 1121 info 10 ## SP not offset, return PC in LR 1122 } 1123 { 1124 shl16insli r29, zero, MY_PLT_INDEX 1125 jr r28 1126 } 1127 1128 This code sequence lets the code at at the start of the PLT determine 1129 which PLT entry was executed by examining 'r29'. 1130 1131 Note that MY_PLT_INDEX skips over the header entries, so the first 1132 actual jump table entry has index zero. 1133 1134 If the offset fits in 16 bits, 1135 1136 lnk r26 11371: 1138 { 1139 addli r28, r26, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET> 1140 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b> 1141 } 1142 { 1143 shl16insli r29, zero, MY_PLT_INDEX 1144 ld r28, r28 1145 } 1146 { 1147 add r27, r26, r27 1148 jr r28 1149 } 1150 info 10 ## SP not offset, return PC in LR 1151 1152 For the purpose of backtracing, the procedure linkage table ends with the 1153 following tail entry: 1154 1155 info 10 ## SP not offset, return PC in LR 1156 1157 The 32-bit versions are similar, with ld4s replacing ld, and offsets into 1158 the GOT being multiples of 4 instead of 8. 1159 1160*/ 1161 1162#define PLT_HEADER_SIZE_IN_BUNDLES 3 1163#define PLT_ENTRY_SIZE_IN_BUNDLES 5 1164#define PLT_TAIL_SIZE_IN_BUNDLES 1 1165 1166#define PLT_HEADER_SIZE \ 1167 (PLT_HEADER_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES) 1168#define PLT_ENTRY_SIZE \ 1169 (PLT_ENTRY_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES) 1170#define PLT_TAIL_SIZE \ 1171 (PLT_TAIL_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES) 1172 1173#define GOT_ENTRY_SIZE(htab) TILEGX_ELF_WORD_BYTES (htab) 1174 1175#define GOTPLT_HEADER_SIZE(htab) (2 * GOT_ENTRY_SIZE (htab)) 1176 1177static const bfd_byte 1178tilegx64_plt0_entry[PLT_HEADER_SIZE] = 1179{ 1180 0x00, 0x30, 0x48, 0x51, 1181 0x6e, 0x43, 0xa0, 0x18, /* { ld_add r28, r27, 8 } */ 1182 0x00, 0x30, 0xbc, 0x35, 1183 0x00, 0x40, 0xde, 0x9e, /* { ld r27, r27 } */ 1184 0xff, 0xaf, 0x30, 0x40, 1185 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */ 1186}; 1187 1188static const bfd_byte 1189tilegx64_long_plt_entry[PLT_ENTRY_SIZE] = 1190{ 1191 0xdc, 0x0f, 0x00, 0x10, 1192 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */ 1193 0xdb, 0x0f, 0x00, 0x10, 1194 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */ 1195 0x9c, 0xc6, 0x0d, 0xd0, 1196 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */ 1197 0x9b, 0xb6, 0xc5, 0xad, 1198 0xff, 0x57, 0xe0, 0x8e, /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */ 1199 0xdd, 0x0f, 0x00, 0x70, 1200 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */ 1201}; 1202 1203static const bfd_byte 1204tilegx64_short_plt_entry[PLT_ENTRY_SIZE] = 1205{ 1206 0x00, 0x30, 0x48, 0x51, 1207 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */ 1208 0x9c, 0x06, 0x00, 0x90, 1209 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */ 1210 0xdd, 0x0f, 0x00, 0x70, 1211 0x8e, 0xeb, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld r28, r28 } */ 1212 0x9b, 0xb6, 0x0d, 0x50, 1213 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */ 1214 0x00, 0x30, 0x48, 0xd1, 1215 0xff, 0x57, 0x18, 0x18, /* { info 10 } */ 1216}; 1217 1218/* Reuse an existing info 10 bundle. */ 1219static const bfd_byte *const tilegx64_plt_tail_entry = 1220 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES]; 1221 1222static const bfd_byte 1223tilegx32_plt0_entry[PLT_HEADER_SIZE] = 1224{ 1225 0x00, 0x30, 0x48, 0x51, 1226 0x6e, 0x23, 0x58, 0x18, /* { ld4s_add r28, r27, 4 } */ 1227 0x00, 0x30, 0xbc, 0x35, 1228 0x00, 0x40, 0xde, 0x9c, /* { ld4s r27, r27 } */ 1229 0xff, 0xaf, 0x30, 0x40, 1230 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */ 1231}; 1232 1233static const bfd_byte 1234tilegx32_long_plt_entry[PLT_ENTRY_SIZE] = 1235{ 1236 0xdc, 0x0f, 0x00, 0x10, 1237 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */ 1238 0xdb, 0x0f, 0x00, 0x10, 1239 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */ 1240 0x9c, 0xc6, 0x0d, 0xd0, 1241 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */ 1242 0x9b, 0xb6, 0xc5, 0xad, 1243 0xff, 0x57, 0xe0, 0x8c, /* { add r27, r26, r27 ; info 10 ; ld4s r28, r28 } */ 1244 0xdd, 0x0f, 0x00, 0x70, 1245 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */ 1246}; 1247 1248static const bfd_byte 1249tilegx32_short_plt_entry[PLT_ENTRY_SIZE] = 1250{ 1251 0x00, 0x30, 0x48, 0x51, 1252 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */ 1253 0x9c, 0x06, 0x00, 0x90, 1254 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */ 1255 0xdd, 0x0f, 0x00, 0x70, 1256 0x8e, 0x9b, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld4s r28, r28 } */ 1257 0x9b, 0xb6, 0x0d, 0x50, 1258 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */ 1259 0x00, 0x30, 0x48, 0xd1, 1260 0xff, 0x57, 0x18, 0x18, /* { info 10 } */ 1261}; 1262 1263/* Reuse an existing info 10 bundle. */ 1264static const bfd_byte *const tilegx32_plt_tail_entry = 1265 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES]; 1266 1267static int 1268tilegx_plt_entry_build (bfd *output_bfd, 1269 struct tilegx_elf_link_hash_table *htab, 1270 asection *splt, asection *sgotplt, 1271 bfd_vma offset, bfd_vma *r_offset) 1272{ 1273 int plt_index = (offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; 1274 int got_offset = (plt_index * GOT_ENTRY_SIZE (htab) 1275 + GOTPLT_HEADER_SIZE (htab)); 1276 tilegx_bundle_bits *pc; 1277 1278 /* Compute the distance from the got entry to the lnk. */ 1279 bfd_signed_vma dist_got_entry = sgotplt->output_section->vma 1280 + sgotplt->output_offset 1281 + got_offset 1282 - splt->output_section->vma 1283 - splt->output_offset 1284 - offset 1285 - TILEGX_BUNDLE_SIZE_IN_BYTES; 1286 1287 /* Compute the distance to GOTPLT[0]. */ 1288 bfd_signed_vma dist_got0 = dist_got_entry - got_offset; 1289 1290 /* Check whether we can use the short plt entry with 16-bit offset. */ 1291 bfd_boolean short_plt_entry = 1292 (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000); 1293 1294 const tilegx_bundle_bits *plt_entry = (tilegx_bundle_bits *) 1295 (ABI_64_P (output_bfd) ? 1296 (short_plt_entry ? tilegx64_short_plt_entry : tilegx64_long_plt_entry) : 1297 (short_plt_entry ? tilegx32_short_plt_entry : tilegx32_long_plt_entry)); 1298 1299 /* Copy the plt entry template. */ 1300 memcpy (splt->contents + offset, plt_entry, PLT_ENTRY_SIZE); 1301 1302 /* Write the immediate offsets. */ 1303 pc = (tilegx_bundle_bits *)(splt->contents + offset); 1304 1305 if (short_plt_entry) 1306 { 1307 /* { lnk r28 } */ 1308 pc++; 1309 1310 /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; moveli r27, &GOTPLT[0] } */ 1311 *pc++ |= create_Imm16_X0 (dist_got_entry) 1312 | create_Imm16_X1 (dist_got0); 1313 1314 /* { shl16insli r29, zero, MY_PLT_INDEX ; ld r28, r28 } */ 1315 *pc++ |= create_Imm16_X0 (plt_index); 1316 } 1317 else 1318 { 1319 /* { moveli r28, &GOTPLT[MY_GOT_INDEX] ; lnk r26 } */ 1320 *pc++ |= create_Imm16_X0 (dist_got_entry >> 16); 1321 1322 /* { moveli r27, &GOTPLT[0] ; 1323 shl16insli r28, r28, &GOTPLT[MY_GOT_INDEX] } */ 1324 *pc++ |= create_Imm16_X0 (dist_got0 >> 16) 1325 | create_Imm16_X1 (dist_got_entry); 1326 1327 /* { add r28, r26, r28 ; shl16insli r27, r27, &GOTPLT[0] } */ 1328 *pc++ |= create_Imm16_X1 (dist_got0); 1329 1330 /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */ 1331 pc++; 1332 1333 /* { shl16insli r29, zero, MY_GOT_INDEX ; jr r28 } */ 1334 *pc++ |= create_Imm16_X0 (plt_index); 1335 } 1336 1337 /* Set the relocation offset. */ 1338 *r_offset = got_offset; 1339 1340 return plt_index; 1341} 1342 1343/* Create an entry in an TILEGX ELF linker hash table. */ 1344 1345static struct bfd_hash_entry * 1346link_hash_newfunc (struct bfd_hash_entry *entry, 1347 struct bfd_hash_table *table, const char *string) 1348{ 1349 /* Allocate the structure if it has not already been allocated by a 1350 subclass. */ 1351 if (entry == NULL) 1352 { 1353 entry = 1354 bfd_hash_allocate (table, 1355 sizeof (struct tilegx_elf_link_hash_entry)); 1356 if (entry == NULL) 1357 return entry; 1358 } 1359 1360 /* Call the allocation method of the superclass. */ 1361 entry = _bfd_elf_link_hash_newfunc (entry, table, string); 1362 if (entry != NULL) 1363 { 1364 struct tilegx_elf_link_hash_entry *eh; 1365 1366 eh = (struct tilegx_elf_link_hash_entry *) entry; 1367 eh->dyn_relocs = NULL; 1368 eh->tls_type = GOT_UNKNOWN; 1369 } 1370 1371 return entry; 1372} 1373 1374/* Create a TILEGX ELF linker hash table. */ 1375 1376struct bfd_link_hash_table * 1377tilegx_elf_link_hash_table_create (bfd *abfd) 1378{ 1379 struct tilegx_elf_link_hash_table *ret; 1380 bfd_size_type amt = sizeof (struct tilegx_elf_link_hash_table); 1381 1382 ret = (struct tilegx_elf_link_hash_table *) bfd_zmalloc (amt); 1383 if (ret == NULL) 1384 return NULL; 1385 1386#ifdef BFD64 1387 if (ABI_64_P (abfd)) 1388 { 1389 ret->bytes_per_word = 8; 1390 ret->word_align_power = 3; 1391 ret->bytes_per_rela = sizeof (Elf64_External_Rela); 1392 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF64; 1393 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD64; 1394 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF64; 1395 ret->r_info = tilegx_elf_r_info_64; 1396 ret->r_symndx = tilegx_elf_r_symndx_64; 1397 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER; 1398 ret->put_word = tilegx_put_word_64; 1399 } 1400 else 1401#endif 1402 { 1403 ret->bytes_per_word = 4; 1404 ret->word_align_power = 2; 1405 ret->bytes_per_rela = sizeof (Elf32_External_Rela); 1406 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF32; 1407 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD32; 1408 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF32; 1409 ret->r_info = tilegx_elf_r_info_32; 1410 ret->r_symndx = tilegx_elf_r_symndx_32; 1411 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER; 1412 ret->put_word = tilegx_put_word_32; 1413 } 1414 1415 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, 1416 sizeof (struct tilegx_elf_link_hash_entry), 1417 TILEGX_ELF_DATA)) 1418 { 1419 free (ret); 1420 return NULL; 1421 } 1422 1423 return &ret->elf.root; 1424} 1425 1426/* Create the .got section. */ 1427 1428static bfd_boolean 1429tilegx_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) 1430{ 1431 flagword flags; 1432 asection *s, *s_got; 1433 struct elf_link_hash_entry *h; 1434 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 1435 struct elf_link_hash_table *htab = elf_hash_table (info); 1436 1437 /* This function may be called more than once. */ 1438 if (htab->sgot != NULL) 1439 return TRUE; 1440 1441 flags = bed->dynamic_sec_flags; 1442 1443 s = bfd_make_section_anyway_with_flags (abfd, 1444 (bed->rela_plts_and_copies_p 1445 ? ".rela.got" : ".rel.got"), 1446 (bed->dynamic_sec_flags 1447 | SEC_READONLY)); 1448 if (s == NULL 1449 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 1450 return FALSE; 1451 htab->srelgot = s; 1452 1453 s = s_got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); 1454 if (s == NULL 1455 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 1456 return FALSE; 1457 htab->sgot = s; 1458 1459 /* The first bit of the global offset table is the header. */ 1460 s->size += bed->got_header_size; 1461 1462 if (bed->want_got_plt) 1463 { 1464 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); 1465 if (s == NULL 1466 || !bfd_set_section_alignment (abfd, s, 1467 bed->s->log_file_align)) 1468 return FALSE; 1469 htab->sgotplt = s; 1470 1471 /* Reserve room for the header. */ 1472 s->size += GOTPLT_HEADER_SIZE (tilegx_elf_hash_table (info)); 1473 } 1474 1475 if (bed->want_got_sym) 1476 { 1477 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got 1478 section. We don't do this in the linker script because we don't want 1479 to define the symbol if we are not creating a global offset 1480 table. */ 1481 h = _bfd_elf_define_linkage_sym (abfd, info, s_got, 1482 "_GLOBAL_OFFSET_TABLE_"); 1483 elf_hash_table (info)->hgot = h; 1484 if (h == NULL) 1485 return FALSE; 1486 } 1487 1488 return TRUE; 1489} 1490 1491/* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and 1492 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our 1493 hash table. */ 1494 1495bfd_boolean 1496tilegx_elf_create_dynamic_sections (bfd *dynobj, 1497 struct bfd_link_info *info) 1498{ 1499 if (!tilegx_elf_create_got_section (dynobj, info)) 1500 return FALSE; 1501 1502 return _bfd_elf_create_dynamic_sections (dynobj, info); 1503} 1504 1505/* Copy the extra info we tack onto an elf_link_hash_entry. */ 1506 1507void 1508tilegx_elf_copy_indirect_symbol (struct bfd_link_info *info, 1509 struct elf_link_hash_entry *dir, 1510 struct elf_link_hash_entry *ind) 1511{ 1512 struct tilegx_elf_link_hash_entry *edir, *eind; 1513 1514 edir = (struct tilegx_elf_link_hash_entry *) dir; 1515 eind = (struct tilegx_elf_link_hash_entry *) ind; 1516 1517 if (eind->dyn_relocs != NULL) 1518 { 1519 if (edir->dyn_relocs != NULL) 1520 { 1521 struct tilegx_elf_dyn_relocs **pp; 1522 struct tilegx_elf_dyn_relocs *p; 1523 1524 /* Add reloc counts against the indirect sym to the direct sym 1525 list. Merge any entries against the same section. */ 1526 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) 1527 { 1528 struct tilegx_elf_dyn_relocs *q; 1529 1530 for (q = edir->dyn_relocs; q != NULL; q = q->next) 1531 if (q->sec == p->sec) 1532 { 1533 q->pc_count += p->pc_count; 1534 q->count += p->count; 1535 *pp = p->next; 1536 break; 1537 } 1538 if (q == NULL) 1539 pp = &p->next; 1540 } 1541 *pp = edir->dyn_relocs; 1542 } 1543 1544 edir->dyn_relocs = eind->dyn_relocs; 1545 eind->dyn_relocs = NULL; 1546 } 1547 1548 if (ind->root.type == bfd_link_hash_indirect 1549 && dir->got.refcount <= 0) 1550 { 1551 edir->tls_type = eind->tls_type; 1552 eind->tls_type = GOT_UNKNOWN; 1553 } 1554 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 1555} 1556 1557static int 1558tilegx_tls_translate_to_le (int r_type) 1559{ 1560 switch (r_type) 1561 { 1562 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 1563 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 1564 return R_TILEGX_IMM16_X0_HW0_TLS_LE; 1565 1566 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 1567 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 1568 return R_TILEGX_IMM16_X1_HW0_TLS_LE; 1569 1570 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 1571 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 1572 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE; 1573 1574 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 1575 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 1576 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE; 1577 1578 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 1579 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 1580 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE; 1581 1582 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 1583 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 1584 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE; 1585 } 1586 return r_type; 1587} 1588 1589static int 1590tilegx_tls_translate_to_ie (int r_type) 1591{ 1592 switch (r_type) 1593 { 1594 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 1595 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 1596 return R_TILEGX_IMM16_X0_HW0_TLS_IE; 1597 1598 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 1599 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 1600 return R_TILEGX_IMM16_X1_HW0_TLS_IE; 1601 1602 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 1603 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 1604 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE; 1605 1606 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 1607 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 1608 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE; 1609 1610 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 1611 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 1612 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE; 1613 1614 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 1615 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 1616 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE; 1617 } 1618 return r_type; 1619} 1620 1621static int 1622tilegx_elf_tls_transition (struct bfd_link_info *info, int r_type, 1623 int is_local, bfd_boolean disable_le_transition) 1624{ 1625 if (bfd_link_pic (info)) 1626 return r_type; 1627 1628 if (is_local && !disable_le_transition) 1629 return tilegx_tls_translate_to_le (r_type); 1630 else 1631 return tilegx_tls_translate_to_ie (r_type); 1632} 1633 1634/* Look through the relocs for a section during the first phase, and 1635 allocate space in the global offset table or procedure linkage 1636 table. */ 1637 1638bfd_boolean 1639tilegx_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, 1640 asection *sec, const Elf_Internal_Rela *relocs) 1641{ 1642 struct tilegx_elf_link_hash_table *htab; 1643 Elf_Internal_Shdr *symtab_hdr; 1644 struct elf_link_hash_entry **sym_hashes; 1645 const Elf_Internal_Rela *rel; 1646 const Elf_Internal_Rela *rel_end; 1647 asection *sreloc; 1648 int num_relocs; 1649 bfd_boolean has_tls_gd_or_ie = FALSE, has_tls_add = FALSE; 1650 1651 if (bfd_link_relocatable (info)) 1652 return TRUE; 1653 1654 htab = tilegx_elf_hash_table (info); 1655 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 1656 sym_hashes = elf_sym_hashes (abfd); 1657 1658 sreloc = NULL; 1659 1660 num_relocs = sec->reloc_count; 1661 1662 BFD_ASSERT (is_tilegx_elf (abfd) || num_relocs == 0); 1663 1664 if (htab->elf.dynobj == NULL) 1665 htab->elf.dynobj = abfd; 1666 1667 rel_end = relocs + num_relocs; 1668 1669 /* Check whether to do optimization to transform TLS GD/IE 1670 referehces to TLS LE. We disable it if we're linking with old 1671 TLS code sequences that do not support such optimization. Old 1672 TLS code sequences have tls_gd_call/tls_ie_load relocations but 1673 no tls_add relocations. */ 1674 for (rel = relocs; rel < rel_end && !has_tls_add; rel++) 1675 { 1676 int r_type = TILEGX_ELF_R_TYPE (rel->r_info); 1677 switch (r_type) 1678 { 1679 case R_TILEGX_TLS_GD_CALL: 1680 case R_TILEGX_TLS_IE_LOAD: 1681 has_tls_gd_or_ie = TRUE; 1682 break; 1683 case R_TILEGX_IMM8_X0_TLS_ADD: 1684 case R_TILEGX_IMM8_Y0_TLS_ADD: 1685 case R_TILEGX_IMM8_X1_TLS_ADD: 1686 case R_TILEGX_IMM8_Y1_TLS_ADD: 1687 has_tls_add = TRUE; 1688 break; 1689 } 1690 } 1691 1692 sec->sec_flg0 = (has_tls_gd_or_ie && !has_tls_add); 1693 htab->disable_le_transition |= sec->sec_flg0; 1694 1695 for (rel = relocs; rel < rel_end; rel++) 1696 { 1697 unsigned int r_type; 1698 unsigned long r_symndx; 1699 struct elf_link_hash_entry *h; 1700 int tls_type; 1701 1702 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info); 1703 r_type = TILEGX_ELF_R_TYPE (rel->r_info); 1704 1705 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) 1706 { 1707 /* xgettext:c-format */ 1708 _bfd_error_handler (_("%B: bad symbol index: %d"), 1709 abfd, r_symndx); 1710 return FALSE; 1711 } 1712 1713 if (r_symndx < symtab_hdr->sh_info) 1714 h = NULL; 1715 else 1716 { 1717 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 1718 while (h->root.type == bfd_link_hash_indirect 1719 || h->root.type == bfd_link_hash_warning) 1720 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1721 1722 /* PR15323, ref flags aren't set for references in the same 1723 object. */ 1724 h->root.non_ir_ref = 1; 1725 } 1726 1727 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL, 1728 sec->sec_flg0); 1729 switch (r_type) 1730 { 1731 case R_TILEGX_IMM16_X0_HW0_TLS_LE: 1732 case R_TILEGX_IMM16_X1_HW0_TLS_LE: 1733 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE: 1734 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE: 1735 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE: 1736 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE: 1737 if (bfd_link_pic (info)) 1738 goto r_tilegx_plt32; 1739 break; 1740 1741 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 1742 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 1743 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 1744 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 1745 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 1746 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 1747 BFD_ASSERT (bfd_link_pic (info)); 1748 tls_type = GOT_TLS_GD; 1749 goto have_got_reference; 1750 1751 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 1752 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 1753 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 1754 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 1755 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 1756 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 1757 tls_type = GOT_TLS_IE; 1758 if (bfd_link_pic (info)) 1759 info->flags |= DF_STATIC_TLS; 1760 goto have_got_reference; 1761 1762 case R_TILEGX_IMM16_X0_HW0_GOT: 1763 case R_TILEGX_IMM16_X1_HW0_GOT: 1764 case R_TILEGX_IMM16_X0_HW0_LAST_GOT: 1765 case R_TILEGX_IMM16_X1_HW0_LAST_GOT: 1766 case R_TILEGX_IMM16_X0_HW1_LAST_GOT: 1767 case R_TILEGX_IMM16_X1_HW1_LAST_GOT: 1768 tls_type = GOT_NORMAL; 1769 /* Fall Through */ 1770 1771 have_got_reference: 1772 /* This symbol requires a global offset table entry. */ 1773 { 1774 int old_tls_type; 1775 1776 if (h != NULL) 1777 { 1778 h->got.refcount += 1; 1779 old_tls_type = tilegx_elf_hash_entry(h)->tls_type; 1780 } 1781 else 1782 { 1783 bfd_signed_vma *local_got_refcounts; 1784 1785 /* This is a global offset table entry for a local symbol. */ 1786 local_got_refcounts = elf_local_got_refcounts (abfd); 1787 if (local_got_refcounts == NULL) 1788 { 1789 bfd_size_type size; 1790 1791 size = symtab_hdr->sh_info; 1792 size *= (sizeof (bfd_signed_vma) + sizeof(char)); 1793 local_got_refcounts = ((bfd_signed_vma *) 1794 bfd_zalloc (abfd, size)); 1795 if (local_got_refcounts == NULL) 1796 return FALSE; 1797 elf_local_got_refcounts (abfd) = local_got_refcounts; 1798 _bfd_tilegx_elf_local_got_tls_type (abfd) 1799 = (char *) (local_got_refcounts + symtab_hdr->sh_info); 1800 } 1801 local_got_refcounts[r_symndx] += 1; 1802 old_tls_type = _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx]; 1803 } 1804 1805 /* If a TLS symbol is accessed using IE at least once, 1806 there is no point to use dynamic model for it. */ 1807 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN 1808 && (old_tls_type != GOT_TLS_GD 1809 || tls_type != GOT_TLS_IE)) 1810 { 1811 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD) 1812 tls_type = old_tls_type; 1813 else 1814 { 1815 _bfd_error_handler 1816 /* xgettext:c-format */ 1817 (_("%B: `%s' accessed both as normal and thread local symbol"), 1818 abfd, h ? h->root.root.string : "<local>"); 1819 return FALSE; 1820 } 1821 } 1822 1823 if (old_tls_type != tls_type) 1824 { 1825 if (h != NULL) 1826 tilegx_elf_hash_entry (h)->tls_type = tls_type; 1827 else 1828 _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx] = tls_type; 1829 } 1830 } 1831 1832 if (htab->elf.sgot == NULL) 1833 { 1834 if (!tilegx_elf_create_got_section (htab->elf.dynobj, info)) 1835 return FALSE; 1836 } 1837 break; 1838 1839 case R_TILEGX_TLS_GD_CALL: 1840 if (bfd_link_pic (info)) 1841 { 1842 /* These are basically R_TILEGX_JUMPOFF_X1_PLT relocs 1843 against __tls_get_addr. */ 1844 struct bfd_link_hash_entry *bh = NULL; 1845 if (! _bfd_generic_link_add_one_symbol (info, abfd, 1846 "__tls_get_addr", 0, 1847 bfd_und_section_ptr, 0, 1848 NULL, FALSE, FALSE, 1849 &bh)) 1850 return FALSE; 1851 h = (struct elf_link_hash_entry *) bh; 1852 } 1853 else 1854 break; 1855 /* Fall through */ 1856 1857 case R_TILEGX_JUMPOFF_X1_PLT: 1858 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL: 1859 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL: 1860 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL: 1861 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL: 1862 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL: 1863 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL: 1864 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL: 1865 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL: 1866 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL: 1867 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL: 1868 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL: 1869 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL: 1870 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL: 1871 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL: 1872 /* This symbol requires a procedure linkage table entry. We 1873 actually build the entry in adjust_dynamic_symbol, 1874 because this might be a case of linking PIC code without 1875 linking in any dynamic objects, in which case we don't 1876 need to generate a procedure linkage table after all. */ 1877 1878 if (h != NULL) 1879 { 1880 h->needs_plt = 1; 1881 h->plt.refcount += 1; 1882 } 1883 break; 1884 1885 case R_TILEGX_64_PCREL: 1886 case R_TILEGX_32_PCREL: 1887 case R_TILEGX_16_PCREL: 1888 case R_TILEGX_8_PCREL: 1889 case R_TILEGX_IMM16_X0_HW0_PCREL: 1890 case R_TILEGX_IMM16_X1_HW0_PCREL: 1891 case R_TILEGX_IMM16_X0_HW1_PCREL: 1892 case R_TILEGX_IMM16_X1_HW1_PCREL: 1893 case R_TILEGX_IMM16_X0_HW2_PCREL: 1894 case R_TILEGX_IMM16_X1_HW2_PCREL: 1895 case R_TILEGX_IMM16_X0_HW3_PCREL: 1896 case R_TILEGX_IMM16_X1_HW3_PCREL: 1897 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL: 1898 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL: 1899 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL: 1900 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL: 1901 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL: 1902 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL: 1903 if (h != NULL) 1904 h->non_got_ref = 1; 1905 1906 if (h != NULL 1907 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 1908 break; 1909 /* Fall through. */ 1910 1911 case R_TILEGX_64: 1912 case R_TILEGX_32: 1913 case R_TILEGX_16: 1914 case R_TILEGX_8: 1915 case R_TILEGX_HW0: 1916 case R_TILEGX_HW1: 1917 case R_TILEGX_HW2: 1918 case R_TILEGX_HW3: 1919 case R_TILEGX_HW0_LAST: 1920 case R_TILEGX_HW1_LAST: 1921 case R_TILEGX_HW2_LAST: 1922 case R_TILEGX_COPY: 1923 case R_TILEGX_GLOB_DAT: 1924 case R_TILEGX_JMP_SLOT: 1925 case R_TILEGX_RELATIVE: 1926 case R_TILEGX_BROFF_X1: 1927 case R_TILEGX_JUMPOFF_X1: 1928 case R_TILEGX_IMM8_X0: 1929 case R_TILEGX_IMM8_Y0: 1930 case R_TILEGX_IMM8_X1: 1931 case R_TILEGX_IMM8_Y1: 1932 case R_TILEGX_DEST_IMM8_X1: 1933 case R_TILEGX_MT_IMM14_X1: 1934 case R_TILEGX_MF_IMM14_X1: 1935 case R_TILEGX_MMSTART_X0: 1936 case R_TILEGX_MMEND_X0: 1937 case R_TILEGX_SHAMT_X0: 1938 case R_TILEGX_SHAMT_X1: 1939 case R_TILEGX_SHAMT_Y0: 1940 case R_TILEGX_SHAMT_Y1: 1941 case R_TILEGX_IMM16_X0_HW0: 1942 case R_TILEGX_IMM16_X1_HW0: 1943 case R_TILEGX_IMM16_X0_HW1: 1944 case R_TILEGX_IMM16_X1_HW1: 1945 case R_TILEGX_IMM16_X0_HW2: 1946 case R_TILEGX_IMM16_X1_HW2: 1947 case R_TILEGX_IMM16_X0_HW3: 1948 case R_TILEGX_IMM16_X1_HW3: 1949 case R_TILEGX_IMM16_X0_HW0_LAST: 1950 case R_TILEGX_IMM16_X1_HW0_LAST: 1951 case R_TILEGX_IMM16_X0_HW1_LAST: 1952 case R_TILEGX_IMM16_X1_HW1_LAST: 1953 case R_TILEGX_IMM16_X0_HW2_LAST: 1954 case R_TILEGX_IMM16_X1_HW2_LAST: 1955 if (h != NULL) 1956 h->non_got_ref = 1; 1957 1958 r_tilegx_plt32: 1959 if (h != NULL && !bfd_link_pic (info)) 1960 { 1961 /* We may need a .plt entry if the function this reloc 1962 refers to is in a shared lib. */ 1963 h->plt.refcount += 1; 1964 } 1965 1966 /* If we are creating a shared library, and this is a reloc 1967 against a global symbol, or a non PC relative reloc 1968 against a local symbol, then we need to copy the reloc 1969 into the shared library. However, if we are linking with 1970 -Bsymbolic, we do not need to copy a reloc against a 1971 global symbol which is defined in an object we are 1972 including in the link (i.e., DEF_REGULAR is set). At 1973 this point we have not seen all the input files, so it is 1974 possible that DEF_REGULAR is not set now but will be set 1975 later (it is never cleared). In case of a weak definition, 1976 DEF_REGULAR may be cleared later by a strong definition in 1977 a shared library. We account for that possibility below by 1978 storing information in the relocs_copied field of the hash 1979 table entry. A similar situation occurs when creating 1980 shared libraries and symbol visibility changes render the 1981 symbol local. 1982 1983 If on the other hand, we are creating an executable, we 1984 may need to keep relocations for symbols satisfied by a 1985 dynamic library if we manage to avoid copy relocs for the 1986 symbol. */ 1987 if ((bfd_link_pic (info) 1988 && (sec->flags & SEC_ALLOC) != 0 1989 && (! tilegx_elf_howto_table[r_type].pc_relative 1990 || (h != NULL 1991 && (! info->symbolic 1992 || h->root.type == bfd_link_hash_defweak 1993 || !h->def_regular)))) 1994 || (!bfd_link_pic (info) 1995 && (sec->flags & SEC_ALLOC) != 0 1996 && h != NULL 1997 && (h->root.type == bfd_link_hash_defweak 1998 || !h->def_regular))) 1999 { 2000 struct tilegx_elf_dyn_relocs *p; 2001 struct tilegx_elf_dyn_relocs **head; 2002 2003 /* When creating a shared object, we must copy these 2004 relocs into the output file. We create a reloc 2005 section in dynobj and make room for the reloc. */ 2006 if (sreloc == NULL) 2007 { 2008 sreloc = _bfd_elf_make_dynamic_reloc_section 2009 (sec, htab->elf.dynobj, htab->word_align_power, abfd, 2010 /*rela?*/ TRUE); 2011 2012 if (sreloc == NULL) 2013 return FALSE; 2014 } 2015 2016 /* If this is a global symbol, we count the number of 2017 relocations we need for this symbol. */ 2018 if (h != NULL) 2019 head = 2020 &((struct tilegx_elf_link_hash_entry *) h)->dyn_relocs; 2021 else 2022 { 2023 /* Track dynamic relocs needed for local syms too. 2024 We really need local syms available to do this 2025 easily. Oh well. */ 2026 2027 asection *s; 2028 void *vpp; 2029 Elf_Internal_Sym *isym; 2030 2031 isym = bfd_sym_from_r_symndx (&htab->sym_cache, 2032 abfd, r_symndx); 2033 if (isym == NULL) 2034 return FALSE; 2035 2036 s = bfd_section_from_elf_index (abfd, isym->st_shndx); 2037 if (s == NULL) 2038 s = sec; 2039 2040 vpp = &elf_section_data (s)->local_dynrel; 2041 head = (struct tilegx_elf_dyn_relocs **) vpp; 2042 } 2043 2044 p = *head; 2045 if (p == NULL || p->sec != sec) 2046 { 2047 bfd_size_type amt = sizeof *p; 2048 p = ((struct tilegx_elf_dyn_relocs *) 2049 bfd_alloc (htab->elf.dynobj, amt)); 2050 if (p == NULL) 2051 return FALSE; 2052 p->next = *head; 2053 *head = p; 2054 p->sec = sec; 2055 p->count = 0; 2056 p->pc_count = 0; 2057 } 2058 2059 p->count += 1; 2060 if (tilegx_elf_howto_table[r_type].pc_relative) 2061 p->pc_count += 1; 2062 } 2063 2064 break; 2065 2066 case R_TILEGX_GNU_VTINHERIT: 2067 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 2068 return FALSE; 2069 break; 2070 2071 case R_TILEGX_GNU_VTENTRY: 2072 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 2073 return FALSE; 2074 break; 2075 2076 default: 2077 break; 2078 } 2079 } 2080 2081 return TRUE; 2082} 2083 2084 2085asection * 2086tilegx_elf_gc_mark_hook (asection *sec, 2087 struct bfd_link_info *info, 2088 Elf_Internal_Rela *rel, 2089 struct elf_link_hash_entry *h, 2090 Elf_Internal_Sym *sym) 2091{ 2092 if (h != NULL) 2093 { 2094 switch (TILEGX_ELF_R_TYPE (rel->r_info)) 2095 { 2096 case R_TILEGX_GNU_VTINHERIT: 2097 case R_TILEGX_GNU_VTENTRY: 2098 return NULL; 2099 } 2100 } 2101 2102 /* FIXME: The test here, in check_relocs and in relocate_section 2103 dealing with TLS optimization, ought to be !bfd_link_executable (info). */ 2104 if (bfd_link_pic (info)) 2105 { 2106 switch (TILEGX_ELF_R_TYPE (rel->r_info)) 2107 { 2108 case R_TILEGX_TLS_GD_CALL: 2109 /* This reloc implicitly references __tls_get_addr. We know 2110 another reloc will reference the same symbol as the one 2111 on this reloc, so the real symbol and section will be 2112 gc marked when processing the other reloc. That lets 2113 us handle __tls_get_addr here. */ 2114 h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr", 2115 FALSE, FALSE, TRUE); 2116 BFD_ASSERT (h != NULL); 2117 h->mark = 1; 2118 if (h->u.weakdef != NULL) 2119 h->u.weakdef->mark = 1; 2120 sym = NULL; 2121 } 2122 } 2123 2124 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 2125} 2126 2127/* Update the got entry reference counts for the section being removed. */ 2128bfd_boolean 2129tilegx_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, 2130 asection *sec, const Elf_Internal_Rela *relocs) 2131{ 2132 struct tilegx_elf_link_hash_table *htab; 2133 Elf_Internal_Shdr *symtab_hdr; 2134 struct elf_link_hash_entry **sym_hashes; 2135 bfd_signed_vma *local_got_refcounts; 2136 const Elf_Internal_Rela *rel, *relend; 2137 2138 if (bfd_link_relocatable (info)) 2139 return TRUE; 2140 2141 BFD_ASSERT (is_tilegx_elf (abfd) || sec->reloc_count == 0); 2142 2143 elf_section_data (sec)->local_dynrel = NULL; 2144 2145 htab = tilegx_elf_hash_table (info); 2146 BFD_ASSERT (htab != NULL); 2147 symtab_hdr = &elf_symtab_hdr (abfd); 2148 sym_hashes = elf_sym_hashes (abfd); 2149 local_got_refcounts = elf_local_got_refcounts (abfd); 2150 2151 relend = relocs + sec->reloc_count; 2152 for (rel = relocs; rel < relend; rel++) 2153 { 2154 unsigned long r_symndx; 2155 unsigned int r_type; 2156 struct elf_link_hash_entry *h = NULL; 2157 2158 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info); 2159 if (r_symndx >= symtab_hdr->sh_info) 2160 { 2161 struct tilegx_elf_link_hash_entry *eh; 2162 struct tilegx_elf_dyn_relocs **pp; 2163 struct tilegx_elf_dyn_relocs *p; 2164 2165 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 2166 while (h->root.type == bfd_link_hash_indirect 2167 || h->root.type == bfd_link_hash_warning) 2168 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2169 eh = (struct tilegx_elf_link_hash_entry *) h; 2170 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) 2171 if (p->sec == sec) 2172 { 2173 /* Everything must go for SEC. */ 2174 *pp = p->next; 2175 break; 2176 } 2177 } 2178 2179 r_type = TILEGX_ELF_R_TYPE (rel->r_info); 2180 r_type = tilegx_elf_tls_transition (info, r_type, h != NULL, 2181 sec->sec_flg0); 2182 switch (r_type) 2183 { 2184 case R_TILEGX_IMM16_X0_HW0_GOT: 2185 case R_TILEGX_IMM16_X1_HW0_GOT: 2186 case R_TILEGX_IMM16_X0_HW0_LAST_GOT: 2187 case R_TILEGX_IMM16_X1_HW0_LAST_GOT: 2188 case R_TILEGX_IMM16_X0_HW1_LAST_GOT: 2189 case R_TILEGX_IMM16_X1_HW1_LAST_GOT: 2190 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 2191 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 2192 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 2193 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 2194 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 2195 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 2196 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 2197 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 2198 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 2199 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 2200 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 2201 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 2202 if (h != NULL) 2203 { 2204 if (h->got.refcount > 0) 2205 h->got.refcount--; 2206 } 2207 else 2208 { 2209 if (local_got_refcounts && 2210 local_got_refcounts[r_symndx] > 0) 2211 local_got_refcounts[r_symndx]--; 2212 } 2213 break; 2214 2215 case R_TILEGX_64_PCREL: 2216 case R_TILEGX_32_PCREL: 2217 case R_TILEGX_16_PCREL: 2218 case R_TILEGX_8_PCREL: 2219 case R_TILEGX_IMM16_X0_HW0_PCREL: 2220 case R_TILEGX_IMM16_X1_HW0_PCREL: 2221 case R_TILEGX_IMM16_X0_HW1_PCREL: 2222 case R_TILEGX_IMM16_X1_HW1_PCREL: 2223 case R_TILEGX_IMM16_X0_HW2_PCREL: 2224 case R_TILEGX_IMM16_X1_HW2_PCREL: 2225 case R_TILEGX_IMM16_X0_HW3_PCREL: 2226 case R_TILEGX_IMM16_X1_HW3_PCREL: 2227 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL: 2228 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL: 2229 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL: 2230 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL: 2231 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL: 2232 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL: 2233 if (h != NULL 2234 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 2235 break; 2236 /* Fall through. */ 2237 2238 case R_TILEGX_64: 2239 case R_TILEGX_32: 2240 case R_TILEGX_16: 2241 case R_TILEGX_8: 2242 case R_TILEGX_HW0: 2243 case R_TILEGX_HW1: 2244 case R_TILEGX_HW2: 2245 case R_TILEGX_HW3: 2246 case R_TILEGX_HW0_LAST: 2247 case R_TILEGX_HW1_LAST: 2248 case R_TILEGX_HW2_LAST: 2249 case R_TILEGX_COPY: 2250 case R_TILEGX_GLOB_DAT: 2251 case R_TILEGX_JMP_SLOT: 2252 case R_TILEGX_RELATIVE: 2253 case R_TILEGX_BROFF_X1: 2254 case R_TILEGX_JUMPOFF_X1: 2255 case R_TILEGX_IMM8_X0: 2256 case R_TILEGX_IMM8_Y0: 2257 case R_TILEGX_IMM8_X1: 2258 case R_TILEGX_IMM8_Y1: 2259 case R_TILEGX_DEST_IMM8_X1: 2260 case R_TILEGX_MT_IMM14_X1: 2261 case R_TILEGX_MF_IMM14_X1: 2262 case R_TILEGX_MMSTART_X0: 2263 case R_TILEGX_MMEND_X0: 2264 case R_TILEGX_SHAMT_X0: 2265 case R_TILEGX_SHAMT_X1: 2266 case R_TILEGX_SHAMT_Y0: 2267 case R_TILEGX_SHAMT_Y1: 2268 case R_TILEGX_IMM16_X0_HW0: 2269 case R_TILEGX_IMM16_X1_HW0: 2270 case R_TILEGX_IMM16_X0_HW1: 2271 case R_TILEGX_IMM16_X1_HW1: 2272 case R_TILEGX_IMM16_X0_HW2: 2273 case R_TILEGX_IMM16_X1_HW2: 2274 case R_TILEGX_IMM16_X0_HW3: 2275 case R_TILEGX_IMM16_X1_HW3: 2276 case R_TILEGX_IMM16_X0_HW0_LAST: 2277 case R_TILEGX_IMM16_X1_HW0_LAST: 2278 case R_TILEGX_IMM16_X0_HW1_LAST: 2279 case R_TILEGX_IMM16_X1_HW1_LAST: 2280 case R_TILEGX_IMM16_X0_HW2_LAST: 2281 case R_TILEGX_IMM16_X1_HW2_LAST: 2282 if (bfd_link_pic (info)) 2283 break; 2284 /* Fall through. */ 2285 2286 case R_TILEGX_JUMPOFF_X1_PLT: 2287 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL: 2288 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL: 2289 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL: 2290 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL: 2291 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL: 2292 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL: 2293 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL: 2294 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL: 2295 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL: 2296 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL: 2297 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL: 2298 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL: 2299 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL: 2300 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL: 2301 if (h != NULL) 2302 { 2303 if (h->plt.refcount > 0) 2304 h->plt.refcount--; 2305 } 2306 break; 2307 2308 default: 2309 break; 2310 } 2311 } 2312 2313 return TRUE; 2314} 2315 2316/* Adjust a symbol defined by a dynamic object and referenced by a 2317 regular object. The current definition is in some section of the 2318 dynamic object, but we're not including those sections. We have to 2319 change the definition to something the rest of the link can 2320 understand. */ 2321 2322bfd_boolean 2323tilegx_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 2324 struct elf_link_hash_entry *h) 2325{ 2326 struct tilegx_elf_link_hash_table *htab; 2327 struct tilegx_elf_link_hash_entry * eh; 2328 struct tilegx_elf_dyn_relocs *p; 2329 bfd *dynobj; 2330 asection *s, *srel; 2331 2332 htab = tilegx_elf_hash_table (info); 2333 BFD_ASSERT (htab != NULL); 2334 2335 dynobj = htab->elf.dynobj; 2336 2337 /* Make sure we know what is going on here. */ 2338 BFD_ASSERT (dynobj != NULL 2339 && (h->needs_plt 2340 || h->u.weakdef != NULL 2341 || (h->def_dynamic 2342 && h->ref_regular 2343 && !h->def_regular))); 2344 2345 /* If this is a function, put it in the procedure linkage table. We 2346 will fill in the contents of the procedure linkage table later 2347 (although we could actually do it here). */ 2348 if (h->type == STT_FUNC || h->needs_plt) 2349 { 2350 if (h->plt.refcount <= 0 2351 || SYMBOL_CALLS_LOCAL (info, h) 2352 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT 2353 && h->root.type == bfd_link_hash_undefweak)) 2354 { 2355 /* This case can occur if we saw a R_TILEGX_JUMPOFF_X1_PLT 2356 reloc in an input file, but the symbol was never referred 2357 to by a dynamic object, or if all references were garbage 2358 collected. In such a case, we don't actually need to build 2359 a procedure linkage table, and we can just do a 2360 R_TILEGX_JUMPOFF_X1 relocation instead. */ 2361 h->plt.offset = (bfd_vma) -1; 2362 h->needs_plt = 0; 2363 } 2364 2365 return TRUE; 2366 } 2367 else 2368 h->plt.offset = (bfd_vma) -1; 2369 2370 /* If this is a weak symbol, and there is a real definition, the 2371 processor independent code will have arranged for us to see the 2372 real definition first, and we can just use the same value. */ 2373 if (h->u.weakdef != NULL) 2374 { 2375 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 2376 || h->u.weakdef->root.type == bfd_link_hash_defweak); 2377 h->root.u.def.section = h->u.weakdef->root.u.def.section; 2378 h->root.u.def.value = h->u.weakdef->root.u.def.value; 2379 return TRUE; 2380 } 2381 2382 /* This is a reference to a symbol defined by a dynamic object which 2383 is not a function. */ 2384 2385 /* If we are creating a shared library, we must presume that the 2386 only references to the symbol are via the global offset table. 2387 For such cases we need not do anything here; the relocations will 2388 be handled correctly by relocate_section. */ 2389 if (bfd_link_pic (info)) 2390 return TRUE; 2391 2392 /* If there are no references to this symbol that do not use the 2393 GOT, we don't need to generate a copy reloc. */ 2394 if (!h->non_got_ref) 2395 return TRUE; 2396 2397 /* If -z nocopyreloc was given, we won't generate them either. */ 2398 if (info->nocopyreloc) 2399 { 2400 h->non_got_ref = 0; 2401 return TRUE; 2402 } 2403 2404 eh = (struct tilegx_elf_link_hash_entry *) h; 2405 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2406 { 2407 s = p->sec->output_section; 2408 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2409 break; 2410 } 2411 2412 /* If we didn't find any dynamic relocs in read-only sections, then 2413 we'll be keeping the dynamic relocs and avoiding the copy reloc. */ 2414 if (p == NULL) 2415 { 2416 h->non_got_ref = 0; 2417 return TRUE; 2418 } 2419 2420 /* We must allocate the symbol in our .dynbss section, which will 2421 become part of the .bss section of the executable. There will be 2422 an entry for this symbol in the .dynsym section. The dynamic 2423 object will contain position independent code, so all references 2424 from the dynamic object to this symbol will go through the global 2425 offset table. The dynamic linker will use the .dynsym entry to 2426 determine the address it must put in the global offset table, so 2427 both the dynamic object and the regular object will refer to the 2428 same memory location for the variable. */ 2429 2430 /* We must generate a R_TILEGX_COPY reloc to tell the dynamic linker 2431 to copy the initial value out of the dynamic object and into the 2432 runtime process image. We need to remember the offset into the 2433 .rel.bss section we are going to use. */ 2434 if ((h->root.u.def.section->flags & SEC_READONLY) != 0) 2435 { 2436 s = htab->elf.sdynrelro; 2437 srel = htab->elf.sreldynrelro; 2438 } 2439 else 2440 { 2441 s = htab->elf.sdynbss; 2442 srel = htab->elf.srelbss; 2443 } 2444 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) 2445 { 2446 srel->size += TILEGX_ELF_RELA_BYTES (htab); 2447 h->needs_copy = 1; 2448 } 2449 2450 return _bfd_elf_adjust_dynamic_copy (info, h, s); 2451} 2452 2453/* Allocate space in .plt, .got and associated reloc sections for 2454 dynamic relocs. */ 2455 2456static bfd_boolean 2457allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) 2458{ 2459 struct bfd_link_info *info; 2460 struct tilegx_elf_link_hash_table *htab; 2461 struct tilegx_elf_link_hash_entry *eh; 2462 struct tilegx_elf_dyn_relocs *p; 2463 2464 if (h->root.type == bfd_link_hash_indirect) 2465 return TRUE; 2466 2467 info = (struct bfd_link_info *) inf; 2468 htab = tilegx_elf_hash_table (info); 2469 BFD_ASSERT (htab != NULL); 2470 2471 if (htab->elf.dynamic_sections_created 2472 && h->plt.refcount > 0) 2473 { 2474 /* Make sure this symbol is output as a dynamic symbol. 2475 Undefined weak syms won't yet be marked as dynamic. */ 2476 if (h->dynindx == -1 2477 && !h->forced_local) 2478 { 2479 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2480 return FALSE; 2481 } 2482 2483 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) 2484 { 2485 asection *s = htab->elf.splt; 2486 2487 /* Allocate room for the header and tail. */ 2488 if (s->size == 0) 2489 { 2490 s->size = PLT_ENTRY_SIZE; 2491 } 2492 2493 h->plt.offset = s->size - PLT_ENTRY_SIZE + PLT_HEADER_SIZE; 2494 2495 /* If this symbol is not defined in a regular file, and we are 2496 not generating a shared library, then set the symbol to this 2497 location in the .plt. This is required to make function 2498 pointers compare as equal between the normal executable and 2499 the shared library. */ 2500 if (! bfd_link_pic (info) 2501 && !h->def_regular) 2502 { 2503 h->root.u.def.section = s; 2504 h->root.u.def.value = h->plt.offset; 2505 } 2506 2507 /* Make room for this entry. */ 2508 s->size += PLT_ENTRY_SIZE; 2509 2510 /* We also need to make an entry in the .got.plt section. */ 2511 htab->elf.sgotplt->size += GOT_ENTRY_SIZE (htab); 2512 2513 /* We also need to make an entry in the .rela.plt section. */ 2514 htab->elf.srelplt->size += TILEGX_ELF_RELA_BYTES (htab); 2515 } 2516 else 2517 { 2518 h->plt.offset = (bfd_vma) -1; 2519 h->needs_plt = 0; 2520 } 2521 } 2522 else 2523 { 2524 h->plt.offset = (bfd_vma) -1; 2525 h->needs_plt = 0; 2526 } 2527 2528 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE 2529 requiring no TLS entry. */ 2530 if (h->got.refcount > 0 2531 && !htab->disable_le_transition 2532 && !bfd_link_pic (info) 2533 && h->dynindx == -1 2534 && tilegx_elf_hash_entry(h)->tls_type == GOT_TLS_IE) 2535 h->got.offset = (bfd_vma) -1; 2536 else if (h->got.refcount > 0) 2537 { 2538 asection *s; 2539 bfd_boolean dyn; 2540 int tls_type = tilegx_elf_hash_entry(h)->tls_type; 2541 2542 /* Make sure this symbol is output as a dynamic symbol. 2543 Undefined weak syms won't yet be marked as dynamic. */ 2544 if (h->dynindx == -1 2545 && !h->forced_local) 2546 { 2547 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2548 return FALSE; 2549 } 2550 2551 s = htab->elf.sgot; 2552 h->got.offset = s->size; 2553 s->size += TILEGX_ELF_WORD_BYTES (htab); 2554 /* TLS_GD entries need 2 consecutive GOT slots. */ 2555 if (tls_type == GOT_TLS_GD) 2556 s->size += TILEGX_ELF_WORD_BYTES (htab); 2557 dyn = htab->elf.dynamic_sections_created; 2558 /* TLS_IE needs one dynamic relocation, 2559 TLS_GD needs two if local symbol and two if global. */ 2560 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE) 2561 htab->elf.srelgot->size += 2 * TILEGX_ELF_RELA_BYTES (htab); 2562 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2563 bfd_link_pic (info), 2564 h)) 2565 htab->elf.srelgot->size += TILEGX_ELF_RELA_BYTES (htab); 2566 } 2567 else 2568 h->got.offset = (bfd_vma) -1; 2569 2570 eh = (struct tilegx_elf_link_hash_entry *) h; 2571 if (eh->dyn_relocs == NULL) 2572 return TRUE; 2573 2574 /* In the shared -Bsymbolic case, discard space allocated for 2575 dynamic pc-relative relocs against symbols which turn out to be 2576 defined in regular objects. For the normal shared case, discard 2577 space for pc-relative relocs that have become local due to symbol 2578 visibility changes. */ 2579 2580 if (bfd_link_pic (info)) 2581 { 2582 if (SYMBOL_CALLS_LOCAL (info, h)) 2583 { 2584 struct tilegx_elf_dyn_relocs **pp; 2585 2586 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) 2587 { 2588 p->count -= p->pc_count; 2589 p->pc_count = 0; 2590 if (p->count == 0) 2591 *pp = p->next; 2592 else 2593 pp = &p->next; 2594 } 2595 } 2596 2597 /* Also discard relocs on undefined weak syms with non-default 2598 visibility. */ 2599 if (eh->dyn_relocs != NULL 2600 && h->root.type == bfd_link_hash_undefweak) 2601 { 2602 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) 2603 eh->dyn_relocs = NULL; 2604 2605 /* Make sure undefined weak symbols are output as a dynamic 2606 symbol in PIEs. */ 2607 else if (h->dynindx == -1 2608 && !h->forced_local) 2609 { 2610 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2611 return FALSE; 2612 } 2613 } 2614 } 2615 else 2616 { 2617 /* For the non-shared case, discard space for relocs against 2618 symbols which turn out to need copy relocs or are not 2619 dynamic. */ 2620 2621 if (!h->non_got_ref 2622 && ((h->def_dynamic 2623 && !h->def_regular) 2624 || (htab->elf.dynamic_sections_created 2625 && (h->root.type == bfd_link_hash_undefweak 2626 || h->root.type == bfd_link_hash_undefined)))) 2627 { 2628 /* Make sure this symbol is output as a dynamic symbol. 2629 Undefined weak syms won't yet be marked as dynamic. */ 2630 if (h->dynindx == -1 2631 && !h->forced_local) 2632 { 2633 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2634 return FALSE; 2635 } 2636 2637 /* If that succeeded, we know we'll be keeping all the 2638 relocs. */ 2639 if (h->dynindx != -1) 2640 goto keep; 2641 } 2642 2643 eh->dyn_relocs = NULL; 2644 2645 keep: ; 2646 } 2647 2648 /* Finally, allocate space. */ 2649 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2650 { 2651 asection *sreloc = elf_section_data (p->sec)->sreloc; 2652 sreloc->size += p->count * TILEGX_ELF_RELA_BYTES (htab); 2653 } 2654 2655 return TRUE; 2656} 2657 2658/* Find any dynamic relocs that apply to read-only sections. */ 2659 2660static bfd_boolean 2661readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) 2662{ 2663 struct tilegx_elf_link_hash_entry *eh; 2664 struct tilegx_elf_dyn_relocs *p; 2665 2666 eh = (struct tilegx_elf_link_hash_entry *) h; 2667 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2668 { 2669 asection *s = p->sec->output_section; 2670 2671 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2672 { 2673 struct bfd_link_info *info = (struct bfd_link_info *) inf; 2674 2675 info->flags |= DF_TEXTREL; 2676 2677 /* Not an error, just cut short the traversal. */ 2678 return FALSE; 2679 } 2680 } 2681 return TRUE; 2682} 2683 2684/* Return true if the dynamic symbol for a given section should be 2685 omitted when creating a shared library. */ 2686 2687bfd_boolean 2688tilegx_elf_omit_section_dynsym (bfd *output_bfd, 2689 struct bfd_link_info *info, 2690 asection *p) 2691{ 2692 /* We keep the .got section symbol so that explicit relocations 2693 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode 2694 can be turned into relocations against the .got symbol. */ 2695 if (strcmp (p->name, ".got") == 0) 2696 return FALSE; 2697 2698 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p); 2699} 2700 2701bfd_boolean 2702tilegx_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 2703 struct bfd_link_info *info) 2704{ 2705 struct tilegx_elf_link_hash_table *htab; 2706 bfd *dynobj; 2707 asection *s; 2708 bfd *ibfd; 2709 2710 htab = tilegx_elf_hash_table (info); 2711 BFD_ASSERT (htab != NULL); 2712 dynobj = htab->elf.dynobj; 2713 BFD_ASSERT (dynobj != NULL); 2714 2715 if (elf_hash_table (info)->dynamic_sections_created) 2716 { 2717 /* Set the contents of the .interp section to the interpreter. */ 2718 if (bfd_link_executable (info) && !info->nointerp) 2719 { 2720 s = bfd_get_linker_section (dynobj, ".interp"); 2721 BFD_ASSERT (s != NULL); 2722 s->size = strlen (htab->dynamic_interpreter) + 1; 2723 s->contents = (unsigned char *) htab->dynamic_interpreter; 2724 } 2725 } 2726 2727 /* Set up .got offsets for local syms, and space for local dynamic 2728 relocs. */ 2729 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) 2730 { 2731 bfd_signed_vma *local_got; 2732 bfd_signed_vma *end_local_got; 2733 char *local_tls_type; 2734 bfd_size_type locsymcount; 2735 Elf_Internal_Shdr *symtab_hdr; 2736 asection *srel; 2737 2738 if (! is_tilegx_elf (ibfd)) 2739 continue; 2740 2741 for (s = ibfd->sections; s != NULL; s = s->next) 2742 { 2743 struct tilegx_elf_dyn_relocs *p; 2744 2745 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) 2746 { 2747 if (!bfd_is_abs_section (p->sec) 2748 && bfd_is_abs_section (p->sec->output_section)) 2749 { 2750 /* Input section has been discarded, either because 2751 it is a copy of a linkonce section or due to 2752 linker script /DISCARD/, so we'll be discarding 2753 the relocs too. */ 2754 } 2755 else if (p->count != 0) 2756 { 2757 srel = elf_section_data (p->sec)->sreloc; 2758 srel->size += p->count * TILEGX_ELF_RELA_BYTES (htab); 2759 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 2760 info->flags |= DF_TEXTREL; 2761 } 2762 } 2763 } 2764 2765 local_got = elf_local_got_refcounts (ibfd); 2766 if (!local_got) 2767 continue; 2768 2769 symtab_hdr = &elf_symtab_hdr (ibfd); 2770 locsymcount = symtab_hdr->sh_info; 2771 end_local_got = local_got + locsymcount; 2772 local_tls_type = _bfd_tilegx_elf_local_got_tls_type (ibfd); 2773 s = htab->elf.sgot; 2774 srel = htab->elf.srelgot; 2775 for (; local_got < end_local_got; ++local_got, ++local_tls_type) 2776 { 2777 if (*local_got > 0) 2778 { 2779 *local_got = s->size; 2780 s->size += TILEGX_ELF_WORD_BYTES (htab); 2781 if (*local_tls_type == GOT_TLS_GD) 2782 s->size += TILEGX_ELF_WORD_BYTES (htab); 2783 if (bfd_link_pic (info) 2784 || *local_tls_type == GOT_TLS_GD 2785 || *local_tls_type == GOT_TLS_IE) 2786 srel->size += TILEGX_ELF_RELA_BYTES (htab); 2787 } 2788 else 2789 *local_got = (bfd_vma) -1; 2790 } 2791 } 2792 2793 /* Allocate global sym .plt and .got entries, and space for global 2794 sym dynamic relocs. */ 2795 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); 2796 2797 if (elf_hash_table (info)->dynamic_sections_created) 2798 { 2799 /* If the .got section is more than 0x8000 bytes, we add 2800 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16 2801 bit relocations have a greater chance of working. */ 2802 if (htab->elf.sgot->size >= 0x8000 2803 && elf_hash_table (info)->hgot->root.u.def.value == 0) 2804 elf_hash_table (info)->hgot->root.u.def.value = 0x8000; 2805 } 2806 2807 if (htab->elf.sgotplt) 2808 { 2809 struct elf_link_hash_entry *got; 2810 got = elf_link_hash_lookup (elf_hash_table (info), 2811 "_GLOBAL_OFFSET_TABLE_", 2812 FALSE, FALSE, FALSE); 2813 2814 /* Don't allocate .got.plt section if there are no GOT nor PLT 2815 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */ 2816 if ((got == NULL 2817 || !got->ref_regular_nonweak) 2818 && (htab->elf.sgotplt->size 2819 == (unsigned)GOTPLT_HEADER_SIZE (htab)) 2820 && (htab->elf.splt == NULL 2821 || htab->elf.splt->size == 0) 2822 && (htab->elf.sgot == NULL 2823 || (htab->elf.sgot->size 2824 == get_elf_backend_data (output_bfd)->got_header_size))) 2825 htab->elf.sgotplt->size = 0; 2826 } 2827 2828 /* The check_relocs and adjust_dynamic_symbol entry points have 2829 determined the sizes of the various dynamic sections. Allocate 2830 memory for them. */ 2831 for (s = dynobj->sections; s != NULL; s = s->next) 2832 { 2833 if ((s->flags & SEC_LINKER_CREATED) == 0) 2834 continue; 2835 2836 if (s == htab->elf.splt 2837 || s == htab->elf.sgot 2838 || s == htab->elf.sgotplt 2839 || s == htab->elf.sdynbss 2840 || s == htab->elf.sdynrelro) 2841 { 2842 /* Strip this section if we don't need it; see the 2843 comment below. */ 2844 } 2845 else if (strncmp (s->name, ".rela", 5) == 0) 2846 { 2847 if (s->size != 0) 2848 { 2849 /* We use the reloc_count field as a counter if we need 2850 to copy relocs into the output file. */ 2851 s->reloc_count = 0; 2852 } 2853 } 2854 else 2855 { 2856 /* It's not one of our sections. */ 2857 continue; 2858 } 2859 2860 if (s->size == 0) 2861 { 2862 /* If we don't need this section, strip it from the 2863 output file. This is mostly to handle .rela.bss and 2864 .rela.plt. We must create both sections in 2865 create_dynamic_sections, because they must be created 2866 before the linker maps input sections to output 2867 sections. The linker does that before 2868 adjust_dynamic_symbol is called, and it is that 2869 function which decides whether anything needs to go 2870 into these sections. */ 2871 s->flags |= SEC_EXCLUDE; 2872 continue; 2873 } 2874 2875 if ((s->flags & SEC_HAS_CONTENTS) == 0) 2876 continue; 2877 2878 /* Allocate memory for the section contents. Zero the memory 2879 for the benefit of .rela.plt, which has 4 unused entries 2880 at the beginning, and we don't want garbage. */ 2881 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); 2882 if (s->contents == NULL) 2883 return FALSE; 2884 } 2885 2886 if (elf_hash_table (info)->dynamic_sections_created) 2887 { 2888 /* Add some entries to the .dynamic section. We fill in the 2889 values later, in tilegx_elf_finish_dynamic_sections, but we 2890 must add the entries now so that we get the correct size for 2891 the .dynamic section. The DT_DEBUG entry is filled in by the 2892 dynamic linker and used by the debugger. */ 2893#define add_dynamic_entry(TAG, VAL) \ 2894 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 2895 2896 if (bfd_link_executable (info)) 2897 { 2898 if (!add_dynamic_entry (DT_DEBUG, 0)) 2899 return FALSE; 2900 } 2901 2902 if (htab->elf.srelplt->size != 0) 2903 { 2904 if (!add_dynamic_entry (DT_PLTGOT, 0) 2905 || !add_dynamic_entry (DT_PLTRELSZ, 0) 2906 || !add_dynamic_entry (DT_PLTREL, DT_RELA) 2907 || !add_dynamic_entry (DT_JMPREL, 0)) 2908 return FALSE; 2909 } 2910 2911 if (!add_dynamic_entry (DT_RELA, 0) 2912 || !add_dynamic_entry (DT_RELASZ, 0) 2913 || !add_dynamic_entry (DT_RELAENT, TILEGX_ELF_RELA_BYTES (htab))) 2914 return FALSE; 2915 2916 /* If any dynamic relocs apply to a read-only section, 2917 then we need a DT_TEXTREL entry. */ 2918 if ((info->flags & DF_TEXTREL) == 0) 2919 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); 2920 2921 if (info->flags & DF_TEXTREL) 2922 { 2923 if (!add_dynamic_entry (DT_TEXTREL, 0)) 2924 return FALSE; 2925 } 2926 } 2927#undef add_dynamic_entry 2928 2929 return TRUE; 2930} 2931 2932/* Return the base VMA address which should be subtracted from real addresses 2933 when resolving @dtpoff relocation. 2934 This is PT_TLS segment p_vaddr. */ 2935 2936static bfd_vma 2937dtpoff_base (struct bfd_link_info *info) 2938{ 2939 /* If tls_sec is NULL, we should have signalled an error already. */ 2940 if (elf_hash_table (info)->tls_sec == NULL) 2941 return 0; 2942 return elf_hash_table (info)->tls_sec->vma; 2943} 2944 2945/* Return the relocation value for @tpoff relocation. */ 2946 2947static bfd_vma 2948tpoff (struct bfd_link_info *info, bfd_vma address) 2949{ 2950 struct elf_link_hash_table *htab = elf_hash_table (info); 2951 2952 /* If tls_sec is NULL, we should have signalled an error already. */ 2953 if (htab->tls_sec == NULL) 2954 return 0; 2955 2956 return (address - htab->tls_sec->vma); 2957} 2958 2959/* Copy SIZE bits from FROM to TO at address ADDR. */ 2960 2961static void 2962tilegx_copy_bits (bfd_byte *addr, int from, int to, int size) 2963{ 2964 int i; 2965 for (i = 0; i < size; i++) 2966 { 2967 int from_byte = (from + i) / 8; 2968 int from_bit = (from + i) % 8; 2969 int to_byte = (to + i) / 8; 2970 int to_bit = (to + i) % 8; 2971 bfd_byte to_mask = 1 << to_bit; 2972 addr[to_byte] = (addr[to_byte] & ~to_mask) 2973 | ((addr[from_byte] >> from_bit << to_bit) & to_mask); 2974 } 2975} 2976 2977/* Replace the MASK bits in ADDR with those in INSN, for the next 2978 TILEGX_BUNDLE_SIZE_IN_BYTES bytes. */ 2979 2980static void 2981tilegx_replace_insn (bfd_byte *addr, const bfd_byte *mask, 2982 const bfd_byte *insn) 2983{ 2984 int i; 2985 for (i = 0; i < TILEGX_BUNDLE_SIZE_IN_BYTES; i++) 2986 { 2987 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]); 2988 } 2989} 2990 2991/* Mask to extract the bits corresponding to an instruction in a 2992 specific pipe of a bundle. */ 2993static const bfd_byte insn_mask_X1[] = { 2994 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x3f 2995}; 2996 2997/* Mask to extract the bits corresponding to an instruction in a 2998 specific pipe of a bundle, minus the destination operand and the 2999 first source operand. */ 3000static const bfd_byte insn_mask_X0_no_dest_no_srca[] = { 3001 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00 3002}; 3003 3004static const bfd_byte insn_mask_X1_no_dest_no_srca[] = { 3005 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x3f 3006}; 3007 3008static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = { 3009 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00 3010}; 3011static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = { 3012 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x3c 3013}; 3014 3015/* Mask to extract the bits corresponding to an instruction in a 3016 specific pipe of a bundle, minus the register operands. */ 3017static const bfd_byte insn_mask_X0_no_operand[] = { 3018 0x00, 0x00, 0xfc, 0x7f, 0x00, 0x00, 0x00, 0x00 3019}; 3020 3021static const bfd_byte insn_mask_X1_no_operand[] = { 3022 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x3f 3023}; 3024 3025static const bfd_byte insn_mask_Y0_no_operand[] = { 3026 0x00, 0x00, 0x0c, 0x78, 0x00, 0x00, 0x00, 0x00 3027}; 3028 3029static const bfd_byte insn_mask_Y1_no_operand[] = { 3030 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x3c 3031}; 3032 3033/* Various instructions synthesized to support tls references. */ 3034 3035/* ld r0, r0 in the X1 pipe, used for tls ie. */ 3036static const bfd_byte insn_tls_ie_ld_X1[] = { 3037 0x00, 0x00, 0x00, 0x00, 0x00, 0xe8, 0x6a, 0x28 3038}; 3039 3040/* ld4s r0, r0 in the X1 pipe, used for tls ie. */ 3041static const bfd_byte insn_tls_ie_ld4s_X1[] = { 3042 0x00, 0x00, 0x00, 0x00, 0x00, 0x98, 0x6a, 0x28 3043}; 3044 3045/* add r0, r0, tp in various pipes, used for tls ie. */ 3046static const bfd_byte insn_tls_ie_add_X0X1[] = { 3047 0x00, 0x50, 0x0f, 0x50, 0x00, 0xa8, 0x07, 0x28 3048}; 3049static const bfd_byte insn_tls_ie_add_Y0Y1[] = { 3050 0x00, 0x50, 0x27, 0x2c, 0x00, 0xa8, 0x13, 0x9a 3051}; 3052 3053/* addx r0, r0, tp in various pipes, used for tls ie. */ 3054static const bfd_byte insn_tls_ie_addx_X0X1[] = { 3055 0x00, 0x50, 0x0b, 0x50, 0x00, 0xa8, 0x05, 0x28 3056}; 3057static const bfd_byte insn_tls_ie_addx_Y0Y1[] = { 3058 0x00, 0x50, 0x03, 0x2c, 0x00, 0xa8, 0x01, 0x9a 3059}; 3060 3061/* move r0, r0 in various pipes, used for tls gd. */ 3062static const bfd_byte insn_tls_gd_add_X0X1[] = { 3063 0x00, 0xf0, 0x07, 0x51, 0x00, 0xf8, 0x3b, 0x28 3064}; 3065static const bfd_byte insn_tls_gd_add_Y0Y1[] = { 3066 0x00, 0xf0, 0x0b, 0x54, 0x00, 0xf8, 0x05, 0xae 3067}; 3068 3069static const bfd_byte *insn_move_X0X1 = insn_tls_gd_add_X0X1; 3070static const bfd_byte *insn_move_Y0Y1 = insn_tls_gd_add_Y0Y1; 3071 3072static const bfd_byte *insn_add_X0X1 = insn_tls_ie_add_X0X1; 3073static const bfd_byte *insn_add_Y0Y1 = insn_tls_ie_add_Y0Y1; 3074 3075static const bfd_byte *insn_addx_X0X1 = insn_tls_ie_addx_X0X1; 3076static const bfd_byte *insn_addx_Y0Y1 = insn_tls_ie_addx_Y0Y1; 3077 3078/* Relocate an TILEGX ELF section. 3079 3080 The RELOCATE_SECTION function is called by the new ELF backend linker 3081 to handle the relocations for a section. 3082 3083 The relocs are always passed as Rela structures. 3084 3085 This function is responsible for adjusting the section contents as 3086 necessary, and (if generating a relocatable output file) adjusting 3087 the reloc addend as necessary. 3088 3089 This function does not have to worry about setting the reloc 3090 address or the reloc symbol index. 3091 3092 LOCAL_SYMS is a pointer to the swapped in local symbols. 3093 3094 LOCAL_SECTIONS is an array giving the section in the input file 3095 corresponding to the st_shndx field of each local symbol. 3096 3097 The global hash table entry for the global symbols can be found 3098 via elf_sym_hashes (input_bfd). 3099 3100 When generating relocatable output, this function must handle 3101 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 3102 going to be the section symbol corresponding to the output 3103 section, which means that the addend must be adjusted 3104 accordingly. */ 3105 3106bfd_boolean 3107tilegx_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, 3108 bfd *input_bfd, asection *input_section, 3109 bfd_byte *contents, Elf_Internal_Rela *relocs, 3110 Elf_Internal_Sym *local_syms, 3111 asection **local_sections) 3112{ 3113 struct tilegx_elf_link_hash_table *htab; 3114 Elf_Internal_Shdr *symtab_hdr; 3115 struct elf_link_hash_entry **sym_hashes; 3116 bfd_vma *local_got_offsets; 3117 bfd_vma got_base; 3118 asection *sreloc; 3119 Elf_Internal_Rela *rel; 3120 Elf_Internal_Rela *relend; 3121 int num_relocs; 3122 3123 htab = tilegx_elf_hash_table (info); 3124 BFD_ASSERT (htab != NULL); 3125 symtab_hdr = &elf_symtab_hdr (input_bfd); 3126 sym_hashes = elf_sym_hashes (input_bfd); 3127 local_got_offsets = elf_local_got_offsets (input_bfd); 3128 3129 if (elf_hash_table (info)->hgot == NULL) 3130 got_base = 0; 3131 else 3132 got_base = elf_hash_table (info)->hgot->root.u.def.value; 3133 3134 sreloc = elf_section_data (input_section)->sreloc; 3135 3136 rel = relocs; 3137 num_relocs = input_section->reloc_count; 3138 relend = relocs + num_relocs; 3139 for (; rel < relend; rel++) 3140 { 3141 int r_type, tls_type; 3142 bfd_boolean is_tls_iele, is_tls_le; 3143 reloc_howto_type *howto; 3144 unsigned long r_symndx; 3145 struct elf_link_hash_entry *h; 3146 Elf_Internal_Sym *sym; 3147 tilegx_create_func create_func; 3148 asection *sec; 3149 bfd_vma relocation; 3150 bfd_reloc_status_type r; 3151 const char *name; 3152 bfd_vma off; 3153 bfd_boolean is_plt = FALSE; 3154 3155 bfd_boolean unresolved_reloc; 3156 3157 r_type = TILEGX_ELF_R_TYPE (rel->r_info); 3158 if (r_type == R_TILEGX_GNU_VTINHERIT 3159 || r_type == R_TILEGX_GNU_VTENTRY) 3160 continue; 3161 3162 if ((unsigned int)r_type >= ARRAY_SIZE (tilegx_elf_howto_table)) 3163 { 3164 /* Not clear if we need to check here, but just be paranoid. */ 3165 _bfd_error_handler 3166 /* xgettext:c-format */ 3167 (_("%B: unrecognized relocation (0x%x) in section `%A'"), 3168 input_bfd, r_type, input_section); 3169 bfd_set_error (bfd_error_bad_value); 3170 return FALSE; 3171 } 3172 3173 howto = tilegx_elf_howto_table + r_type; 3174 3175 /* This is a final link. */ 3176 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info); 3177 h = NULL; 3178 sym = NULL; 3179 sec = NULL; 3180 unresolved_reloc = FALSE; 3181 if (r_symndx < symtab_hdr->sh_info) 3182 { 3183 sym = local_syms + r_symndx; 3184 sec = local_sections[r_symndx]; 3185 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 3186 } 3187 else 3188 { 3189 bfd_boolean warned ATTRIBUTE_UNUSED; 3190 bfd_boolean ignored ATTRIBUTE_UNUSED; 3191 3192 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 3193 r_symndx, symtab_hdr, sym_hashes, 3194 h, sec, relocation, 3195 unresolved_reloc, warned, ignored); 3196 if (warned) 3197 { 3198 /* To avoid generating warning messages about truncated 3199 relocations, set the relocation's address to be the same as 3200 the start of this section. */ 3201 if (input_section->output_section != NULL) 3202 relocation = input_section->output_section->vma; 3203 else 3204 relocation = 0; 3205 } 3206 } 3207 3208 if (sec != NULL && discarded_section (sec)) 3209 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 3210 rel, 1, relend, howto, 0, contents); 3211 3212 if (bfd_link_relocatable (info)) 3213 continue; 3214 3215 if (h != NULL) 3216 name = h->root.root.string; 3217 else 3218 { 3219 name = (bfd_elf_string_from_elf_section 3220 (input_bfd, symtab_hdr->sh_link, sym->st_name)); 3221 if (name == NULL || *name == '\0') 3222 name = bfd_section_name (input_bfd, sec); 3223 } 3224 3225 switch (r_type) 3226 { 3227 case R_TILEGX_TLS_GD_CALL: 3228 case R_TILEGX_IMM8_X0_TLS_GD_ADD: 3229 case R_TILEGX_IMM8_Y0_TLS_GD_ADD: 3230 case R_TILEGX_IMM8_X1_TLS_GD_ADD: 3231 case R_TILEGX_IMM8_Y1_TLS_GD_ADD: 3232 case R_TILEGX_IMM8_X0_TLS_ADD: 3233 case R_TILEGX_IMM8_Y0_TLS_ADD: 3234 case R_TILEGX_IMM8_X1_TLS_ADD: 3235 case R_TILEGX_IMM8_Y1_TLS_ADD: 3236 tls_type = GOT_UNKNOWN; 3237 if (h == NULL && local_got_offsets) 3238 tls_type = 3239 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx]; 3240 else if (h != NULL) 3241 tls_type = tilegx_elf_hash_entry(h)->tls_type; 3242 3243 is_tls_iele = (! bfd_link_pic (info) || tls_type == GOT_TLS_IE); 3244 is_tls_le = is_tls_iele && (!input_section->sec_flg0 3245 && !bfd_link_pic (info) 3246 && (h == NULL || h->dynindx == -1)); 3247 3248 if (r_type == R_TILEGX_TLS_GD_CALL) 3249 { 3250 if (is_tls_le) 3251 { 3252 /* GD -> LE */ 3253 tilegx_replace_insn (contents + rel->r_offset, 3254 insn_mask_X1, insn_move_X0X1); 3255 continue; 3256 } 3257 else if (is_tls_iele) 3258 { 3259 /* GD -> IE */ 3260 if (ABI_64_P (output_bfd)) 3261 tilegx_replace_insn (contents + rel->r_offset, 3262 insn_mask_X1, insn_tls_ie_ld_X1); 3263 else 3264 tilegx_replace_insn (contents + rel->r_offset, 3265 insn_mask_X1, insn_tls_ie_ld4s_X1); 3266 continue; 3267 } 3268 3269 /* GD -> GD */ 3270 h = (struct elf_link_hash_entry *) 3271 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE, 3272 FALSE, TRUE); 3273 BFD_ASSERT (h != NULL); 3274 r_type = R_TILEGX_JUMPOFF_X1_PLT; 3275 howto = tilegx_elf_howto_table + r_type; 3276 } 3277 else if (r_type == R_TILEGX_IMM8_X0_TLS_ADD 3278 || r_type == R_TILEGX_IMM8_X1_TLS_ADD 3279 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD 3280 || r_type == R_TILEGX_IMM8_Y1_TLS_ADD) 3281 { 3282 bfd_boolean is_pipe0 = 3283 (r_type == R_TILEGX_IMM8_X0_TLS_ADD 3284 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD); 3285 bfd_boolean is_X0X1 = 3286 (r_type == R_TILEGX_IMM8_X0_TLS_ADD 3287 || r_type == R_TILEGX_IMM8_X1_TLS_ADD); 3288 int dest_begin = is_pipe0 ? 0 : 31; 3289 int src_begin; 3290 const bfd_byte *insn; 3291 const bfd_byte *mask = NULL; 3292 3293 if (is_tls_le) 3294 { 3295 /* 1. copy dest operand into the first source operand. 3296 2. change the opcode to "move". */ 3297 src_begin = is_pipe0 ? 6 : 37; 3298 insn = is_X0X1 ? insn_move_X0X1 : insn_move_Y0Y1; 3299 3300 switch (r_type) 3301 { 3302 case R_TILEGX_IMM8_X0_TLS_ADD: 3303 mask = insn_mask_X0_no_dest_no_srca; 3304 break; 3305 case R_TILEGX_IMM8_X1_TLS_ADD: 3306 mask = insn_mask_X1_no_dest_no_srca; 3307 break; 3308 case R_TILEGX_IMM8_Y0_TLS_ADD: 3309 mask = insn_mask_Y0_no_dest_no_srca; 3310 break; 3311 case R_TILEGX_IMM8_Y1_TLS_ADD: 3312 mask = insn_mask_Y1_no_dest_no_srca; 3313 break; 3314 } 3315 } 3316 else 3317 { 3318 /* 1. copy dest operand into the second source operand. 3319 2. change the opcode to "add". */ 3320 src_begin = is_pipe0 ? 12 : 43; 3321 if (ABI_64_P (output_bfd)) 3322 insn = is_X0X1 ? insn_add_X0X1 : insn_add_Y0Y1; 3323 else 3324 insn = is_X0X1 ? insn_addx_X0X1 : insn_addx_Y0Y1; 3325 3326 switch (r_type) 3327 { 3328 case R_TILEGX_IMM8_X0_TLS_ADD: 3329 mask = insn_mask_X0_no_operand; 3330 break; 3331 case R_TILEGX_IMM8_X1_TLS_ADD: 3332 mask = insn_mask_X1_no_operand; 3333 break; 3334 case R_TILEGX_IMM8_Y0_TLS_ADD: 3335 mask = insn_mask_Y0_no_operand; 3336 break; 3337 case R_TILEGX_IMM8_Y1_TLS_ADD: 3338 mask = insn_mask_Y1_no_operand; 3339 break; 3340 } 3341 } 3342 3343 tilegx_copy_bits (contents + rel->r_offset, dest_begin, 3344 src_begin, 6); 3345 tilegx_replace_insn (contents + rel->r_offset, mask, insn); 3346 3347 continue; 3348 } 3349 else 3350 { 3351 const bfd_byte *mask = NULL; 3352 const bfd_byte *add_insn = NULL; 3353 bfd_boolean is_64bit = ABI_64_P (output_bfd); 3354 3355 switch (r_type) 3356 { 3357 case R_TILEGX_IMM8_X0_TLS_GD_ADD: 3358 add_insn = is_tls_iele 3359 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1) 3360 : insn_tls_gd_add_X0X1; 3361 mask = insn_mask_X0_no_dest_no_srca; 3362 break; 3363 case R_TILEGX_IMM8_X1_TLS_GD_ADD: 3364 add_insn = is_tls_iele 3365 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1) 3366 : insn_tls_gd_add_X0X1; 3367 mask = insn_mask_X1_no_dest_no_srca; 3368 break; 3369 case R_TILEGX_IMM8_Y0_TLS_GD_ADD: 3370 add_insn = is_tls_iele 3371 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1) 3372 : insn_tls_gd_add_Y0Y1; 3373 mask = insn_mask_Y0_no_dest_no_srca; 3374 break; 3375 case R_TILEGX_IMM8_Y1_TLS_GD_ADD: 3376 add_insn = is_tls_iele 3377 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1) 3378 : insn_tls_gd_add_Y0Y1; 3379 mask = insn_mask_Y1_no_dest_no_srca; 3380 break; 3381 } 3382 3383 tilegx_replace_insn (contents + rel->r_offset, mask, add_insn); 3384 3385 continue; 3386 } 3387 break; 3388 case R_TILEGX_TLS_IE_LOAD: 3389 if (!input_section->sec_flg0 3390 && !bfd_link_pic (info) 3391 && (h == NULL || h->dynindx == -1)) 3392 { 3393 /* IE -> LE */ 3394 tilegx_replace_insn (contents + rel->r_offset, 3395 insn_mask_X1_no_dest_no_srca, 3396 insn_move_X0X1); 3397 } 3398 else 3399 { 3400 /* IE -> IE */ 3401 if (ABI_64_P (output_bfd)) 3402 tilegx_replace_insn (contents + rel->r_offset, 3403 insn_mask_X1_no_dest_no_srca, 3404 insn_tls_ie_ld_X1); 3405 else 3406 tilegx_replace_insn (contents + rel->r_offset, 3407 insn_mask_X1_no_dest_no_srca, 3408 insn_tls_ie_ld4s_X1); 3409 } 3410 continue; 3411 break; 3412 default: 3413 break; 3414 } 3415 3416 switch (r_type) 3417 { 3418 case R_TILEGX_IMM16_X0_HW0_GOT: 3419 case R_TILEGX_IMM16_X1_HW0_GOT: 3420 case R_TILEGX_IMM16_X0_HW0_LAST_GOT: 3421 case R_TILEGX_IMM16_X1_HW0_LAST_GOT: 3422 case R_TILEGX_IMM16_X0_HW1_LAST_GOT: 3423 case R_TILEGX_IMM16_X1_HW1_LAST_GOT: 3424 /* Relocation is to the entry for this symbol in the global 3425 offset table. */ 3426 if (htab->elf.sgot == NULL) 3427 abort (); 3428 3429 if (h != NULL) 3430 { 3431 bfd_boolean dyn; 3432 3433 off = h->got.offset; 3434 BFD_ASSERT (off != (bfd_vma) -1); 3435 dyn = elf_hash_table (info)->dynamic_sections_created; 3436 3437 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 3438 bfd_link_pic (info), 3439 h) 3440 || (bfd_link_pic (info) 3441 && SYMBOL_REFERENCES_LOCAL (info, h))) 3442 { 3443 /* This is actually a static link, or it is a 3444 -Bsymbolic link and the symbol is defined 3445 locally, or the symbol was forced to be local 3446 because of a version file. We must initialize 3447 this entry in the global offset table. Since the 3448 offset must always be a multiple 3449 of 8 for 64-bit, we use the least significant bit 3450 to record whether we have initialized it already. 3451 3452 When doing a dynamic link, we create a .rela.got 3453 relocation entry to initialize the value. This 3454 is done in the finish_dynamic_symbol routine. */ 3455 if ((off & 1) != 0) 3456 off &= ~1; 3457 else 3458 { 3459 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation, 3460 htab->elf.sgot->contents + off); 3461 h->got.offset |= 1; 3462 } 3463 } 3464 else 3465 unresolved_reloc = FALSE; 3466 } 3467 else 3468 { 3469 BFD_ASSERT (local_got_offsets != NULL 3470 && local_got_offsets[r_symndx] != (bfd_vma) -1); 3471 3472 off = local_got_offsets[r_symndx]; 3473 3474 /* The offset must always be a multiple of 8 on 64-bit. 3475 We use the least significant bit to record 3476 whether we have already processed this entry. */ 3477 if ((off & 1) != 0) 3478 off &= ~1; 3479 else 3480 { 3481 if (bfd_link_pic (info)) 3482 { 3483 asection *s; 3484 Elf_Internal_Rela outrel; 3485 3486 /* We need to generate a R_TILEGX_RELATIVE reloc 3487 for the dynamic linker. */ 3488 s = htab->elf.srelgot; 3489 BFD_ASSERT (s != NULL); 3490 3491 outrel.r_offset = (htab->elf.sgot->output_section->vma 3492 + htab->elf.sgot->output_offset 3493 + off); 3494 outrel.r_info = 3495 TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE); 3496 outrel.r_addend = relocation; 3497 relocation = 0; 3498 tilegx_elf_append_rela (output_bfd, s, &outrel); 3499 } 3500 3501 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation, 3502 htab->elf.sgot->contents + off); 3503 local_got_offsets[r_symndx] |= 1; 3504 } 3505 } 3506 relocation = off - got_base; 3507 break; 3508 3509 case R_TILEGX_JUMPOFF_X1_PLT: 3510 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL: 3511 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL: 3512 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL: 3513 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL: 3514 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL: 3515 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL: 3516 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL: 3517 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL: 3518 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL: 3519 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL: 3520 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL: 3521 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL: 3522 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL: 3523 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL: 3524 /* Relocation is to the entry for this symbol in the 3525 procedure linkage table. */ 3526 BFD_ASSERT (h != NULL); 3527 3528 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL) 3529 { 3530 /* We didn't make a PLT entry for this symbol. This 3531 happens when statically linking PIC code, or when 3532 using -Bsymbolic. */ 3533 break; 3534 } 3535 3536 relocation = (htab->elf.splt->output_section->vma 3537 + htab->elf.splt->output_offset 3538 + h->plt.offset); 3539 unresolved_reloc = FALSE; 3540 break; 3541 3542 case R_TILEGX_64_PCREL: 3543 case R_TILEGX_32_PCREL: 3544 case R_TILEGX_16_PCREL: 3545 case R_TILEGX_8_PCREL: 3546 case R_TILEGX_IMM16_X0_HW0_PCREL: 3547 case R_TILEGX_IMM16_X1_HW0_PCREL: 3548 case R_TILEGX_IMM16_X0_HW1_PCREL: 3549 case R_TILEGX_IMM16_X1_HW1_PCREL: 3550 case R_TILEGX_IMM16_X0_HW2_PCREL: 3551 case R_TILEGX_IMM16_X1_HW2_PCREL: 3552 case R_TILEGX_IMM16_X0_HW3_PCREL: 3553 case R_TILEGX_IMM16_X1_HW3_PCREL: 3554 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL: 3555 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL: 3556 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL: 3557 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL: 3558 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL: 3559 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL: 3560 if (h != NULL 3561 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 3562 break; 3563 /* Fall through. */ 3564 case R_TILEGX_64: 3565 case R_TILEGX_32: 3566 case R_TILEGX_16: 3567 case R_TILEGX_8: 3568 case R_TILEGX_HW0: 3569 case R_TILEGX_HW1: 3570 case R_TILEGX_HW2: 3571 case R_TILEGX_HW3: 3572 case R_TILEGX_HW0_LAST: 3573 case R_TILEGX_HW1_LAST: 3574 case R_TILEGX_HW2_LAST: 3575 case R_TILEGX_COPY: 3576 case R_TILEGX_GLOB_DAT: 3577 case R_TILEGX_JMP_SLOT: 3578 case R_TILEGX_RELATIVE: 3579 case R_TILEGX_BROFF_X1: 3580 case R_TILEGX_JUMPOFF_X1: 3581 case R_TILEGX_IMM8_X0: 3582 case R_TILEGX_IMM8_Y0: 3583 case R_TILEGX_IMM8_X1: 3584 case R_TILEGX_IMM8_Y1: 3585 case R_TILEGX_DEST_IMM8_X1: 3586 case R_TILEGX_MT_IMM14_X1: 3587 case R_TILEGX_MF_IMM14_X1: 3588 case R_TILEGX_MMSTART_X0: 3589 case R_TILEGX_MMEND_X0: 3590 case R_TILEGX_SHAMT_X0: 3591 case R_TILEGX_SHAMT_X1: 3592 case R_TILEGX_SHAMT_Y0: 3593 case R_TILEGX_SHAMT_Y1: 3594 case R_TILEGX_IMM16_X0_HW0: 3595 case R_TILEGX_IMM16_X1_HW0: 3596 case R_TILEGX_IMM16_X0_HW1: 3597 case R_TILEGX_IMM16_X1_HW1: 3598 case R_TILEGX_IMM16_X0_HW2: 3599 case R_TILEGX_IMM16_X1_HW2: 3600 case R_TILEGX_IMM16_X0_HW3: 3601 case R_TILEGX_IMM16_X1_HW3: 3602 case R_TILEGX_IMM16_X0_HW0_LAST: 3603 case R_TILEGX_IMM16_X1_HW0_LAST: 3604 case R_TILEGX_IMM16_X0_HW1_LAST: 3605 case R_TILEGX_IMM16_X1_HW1_LAST: 3606 case R_TILEGX_IMM16_X0_HW2_LAST: 3607 case R_TILEGX_IMM16_X1_HW2_LAST: 3608 if ((input_section->flags & SEC_ALLOC) == 0) 3609 break; 3610 3611 if ((bfd_link_pic (info) 3612 && (h == NULL 3613 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 3614 || h->root.type != bfd_link_hash_undefweak) 3615 && (! howto->pc_relative 3616 || !SYMBOL_CALLS_LOCAL (info, h))) 3617 || (!bfd_link_pic (info) 3618 && h != NULL 3619 && h->dynindx != -1 3620 && !h->non_got_ref 3621 && ((h->def_dynamic 3622 && !h->def_regular) 3623 || h->root.type == bfd_link_hash_undefweak 3624 || h->root.type == bfd_link_hash_undefined))) 3625 { 3626 Elf_Internal_Rela outrel; 3627 bfd_boolean skip, relocate = FALSE; 3628 3629 /* When generating a shared object, these relocations 3630 are copied into the output file to be resolved at run 3631 time. */ 3632 3633 BFD_ASSERT (sreloc != NULL); 3634 3635 skip = FALSE; 3636 3637 outrel.r_offset = 3638 _bfd_elf_section_offset (output_bfd, info, input_section, 3639 rel->r_offset); 3640 if (outrel.r_offset == (bfd_vma) -1) 3641 skip = TRUE; 3642 else if (outrel.r_offset == (bfd_vma) -2) 3643 skip = TRUE, relocate = TRUE; 3644 outrel.r_offset += (input_section->output_section->vma 3645 + input_section->output_offset); 3646 3647 switch (r_type) 3648 { 3649 case R_TILEGX_64_PCREL: 3650 case R_TILEGX_32_PCREL: 3651 case R_TILEGX_16_PCREL: 3652 case R_TILEGX_8_PCREL: 3653 /* If the symbol is not dynamic, we should not keep 3654 a dynamic relocation. But an .rela.* slot has been 3655 allocated for it, output R_TILEGX_NONE. 3656 FIXME: Add code tracking needed dynamic relocs as 3657 e.g. i386 has. */ 3658 if (h->dynindx == -1) 3659 skip = TRUE, relocate = TRUE; 3660 break; 3661 } 3662 3663 if (skip) 3664 memset (&outrel, 0, sizeof outrel); 3665 /* h->dynindx may be -1 if the symbol was marked to 3666 become local. */ 3667 else if (h != NULL && 3668 h->dynindx != -1 3669 && (! is_plt 3670 || !bfd_link_pic (info) 3671 || !SYMBOLIC_BIND (info, h) 3672 || !h->def_regular)) 3673 { 3674 BFD_ASSERT (h->dynindx != -1); 3675 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, h->dynindx, r_type); 3676 outrel.r_addend = rel->r_addend; 3677 } 3678 else 3679 { 3680 if (r_type == R_TILEGX_32 || r_type == R_TILEGX_64) 3681 { 3682 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, 3683 R_TILEGX_RELATIVE); 3684 outrel.r_addend = relocation + rel->r_addend; 3685 } 3686 else 3687 { 3688 long indx; 3689 3690 outrel.r_addend = relocation + rel->r_addend; 3691 3692 if (is_plt) 3693 sec = htab->elf.splt; 3694 3695 if (bfd_is_abs_section (sec)) 3696 indx = 0; 3697 else if (sec == NULL || sec->owner == NULL) 3698 { 3699 bfd_set_error (bfd_error_bad_value); 3700 return FALSE; 3701 } 3702 else 3703 { 3704 asection *osec; 3705 3706 /* We are turning this relocation into one 3707 against a section symbol. It would be 3708 proper to subtract the symbol's value, 3709 osec->vma, from the emitted reloc addend, 3710 but ld.so expects buggy relocs. */ 3711 osec = sec->output_section; 3712 indx = elf_section_data (osec)->dynindx; 3713 3714 if (indx == 0) 3715 { 3716 osec = htab->elf.text_index_section; 3717 indx = elf_section_data (osec)->dynindx; 3718 } 3719 3720 /* FIXME: we really should be able to link non-pic 3721 shared libraries. */ 3722 if (indx == 0) 3723 { 3724 BFD_FAIL (); 3725 _bfd_error_handler 3726 (_("%B: probably compiled without -fPIC?"), 3727 input_bfd); 3728 bfd_set_error (bfd_error_bad_value); 3729 return FALSE; 3730 } 3731 } 3732 3733 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, indx, 3734 r_type); 3735 } 3736 } 3737 3738 tilegx_elf_append_rela (output_bfd, sreloc, &outrel); 3739 3740 /* This reloc will be computed at runtime, so there's no 3741 need to do anything now. */ 3742 if (! relocate) 3743 continue; 3744 } 3745 break; 3746 3747 case R_TILEGX_IMM16_X0_HW0_TLS_LE: 3748 case R_TILEGX_IMM16_X1_HW0_TLS_LE: 3749 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE: 3750 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE: 3751 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE: 3752 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE: 3753 if (bfd_link_pic (info)) 3754 { 3755 Elf_Internal_Rela outrel; 3756 bfd_boolean skip; 3757 3758 BFD_ASSERT (sreloc != NULL); 3759 skip = FALSE; 3760 outrel.r_offset = 3761 _bfd_elf_section_offset (output_bfd, info, input_section, 3762 rel->r_offset); 3763 if (outrel.r_offset == (bfd_vma) -1) 3764 skip = TRUE; 3765 else if (outrel.r_offset == (bfd_vma) -2) 3766 skip = TRUE; 3767 outrel.r_offset += (input_section->output_section->vma 3768 + input_section->output_offset); 3769 if (skip) 3770 memset (&outrel, 0, sizeof outrel); 3771 else 3772 { 3773 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, r_type); 3774 outrel.r_addend = relocation - dtpoff_base (info) 3775 + rel->r_addend; 3776 } 3777 3778 tilegx_elf_append_rela (output_bfd, sreloc, &outrel); 3779 continue; 3780 } 3781 relocation = tpoff (info, relocation); 3782 break; 3783 3784 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 3785 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 3786 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 3787 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 3788 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 3789 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 3790 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 3791 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 3792 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 3793 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 3794 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 3795 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 3796 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL, 3797 input_section->sec_flg0); 3798 tls_type = GOT_UNKNOWN; 3799 if (h == NULL && local_got_offsets) 3800 tls_type = 3801 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx]; 3802 else if (h != NULL) 3803 { 3804 tls_type = tilegx_elf_hash_entry(h)->tls_type; 3805 if (!bfd_link_pic (info) 3806 && h->dynindx == -1 3807 && tls_type == GOT_TLS_IE) 3808 r_type = (!input_section->sec_flg0 3809 ? tilegx_tls_translate_to_le (r_type) 3810 : tilegx_tls_translate_to_ie (r_type)); 3811 } 3812 3813 if (tls_type == GOT_TLS_IE) 3814 r_type = tilegx_tls_translate_to_ie (r_type); 3815 3816 if (r_type == R_TILEGX_IMM16_X0_HW0_TLS_LE 3817 || r_type == R_TILEGX_IMM16_X1_HW0_TLS_LE 3818 || r_type == R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE 3819 || r_type == R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE 3820 || r_type == R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE 3821 || r_type == R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE) 3822 { 3823 relocation = tpoff (info, relocation); 3824 break; 3825 } 3826 3827 if (h != NULL) 3828 { 3829 off = h->got.offset; 3830 h->got.offset |= 1; 3831 } 3832 else 3833 { 3834 BFD_ASSERT (local_got_offsets != NULL); 3835 off = local_got_offsets[r_symndx]; 3836 local_got_offsets[r_symndx] |= 1; 3837 } 3838 3839 if (htab->elf.sgot == NULL) 3840 abort (); 3841 3842 if ((off & 1) != 0) 3843 off &= ~1; 3844 else 3845 { 3846 Elf_Internal_Rela outrel; 3847 int indx = 0; 3848 bfd_boolean need_relocs = FALSE; 3849 3850 if (htab->elf.srelgot == NULL) 3851 abort (); 3852 3853 if (h != NULL) 3854 { 3855 bfd_boolean dyn; 3856 dyn = htab->elf.dynamic_sections_created; 3857 3858 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 3859 bfd_link_pic (info), 3860 h) 3861 && (!bfd_link_pic (info) 3862 || !SYMBOL_REFERENCES_LOCAL (info, h))) 3863 { 3864 indx = h->dynindx; 3865 } 3866 } 3867 3868 /* The GOT entries have not been initialized yet. Do it 3869 now, and emit any relocations. */ 3870 if ((bfd_link_pic (info) || indx != 0) 3871 && (h == NULL 3872 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 3873 || h->root.type != bfd_link_hash_undefweak)) 3874 need_relocs = TRUE; 3875 3876 switch (r_type) 3877 { 3878 case R_TILEGX_IMM16_X0_HW0_TLS_IE: 3879 case R_TILEGX_IMM16_X1_HW0_TLS_IE: 3880 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: 3881 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: 3882 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: 3883 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: 3884 if (need_relocs) { 3885 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 3886 htab->elf.sgot->contents + off); 3887 outrel.r_offset = (htab->elf.sgot->output_section->vma 3888 + htab->elf.sgot->output_offset + off); 3889 outrel.r_addend = 0; 3890 if (indx == 0) 3891 outrel.r_addend = relocation - dtpoff_base (info); 3892 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx, 3893 TILEGX_ELF_TPOFF_RELOC (htab)); 3894 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); 3895 } else { 3896 TILEGX_ELF_PUT_WORD (htab, output_bfd, 3897 tpoff (info, relocation), 3898 htab->elf.sgot->contents + off); 3899 } 3900 break; 3901 3902 case R_TILEGX_IMM16_X0_HW0_TLS_GD: 3903 case R_TILEGX_IMM16_X1_HW0_TLS_GD: 3904 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: 3905 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: 3906 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: 3907 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: 3908 if (need_relocs) { 3909 outrel.r_offset = (htab->elf.sgot->output_section->vma 3910 + htab->elf.sgot->output_offset + off); 3911 outrel.r_addend = 0; 3912 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx, 3913 TILEGX_ELF_DTPMOD_RELOC (htab)); 3914 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 3915 htab->elf.sgot->contents + off); 3916 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); 3917 if (indx == 0) 3918 { 3919 BFD_ASSERT (! unresolved_reloc); 3920 TILEGX_ELF_PUT_WORD (htab, output_bfd, 3921 relocation - dtpoff_base (info), 3922 (htab->elf.sgot->contents + off + 3923 TILEGX_ELF_WORD_BYTES (htab))); 3924 } 3925 else 3926 { 3927 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 3928 (htab->elf.sgot->contents + off + 3929 TILEGX_ELF_WORD_BYTES (htab))); 3930 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx, 3931 TILEGX_ELF_DTPOFF_RELOC (htab)); 3932 outrel.r_offset += TILEGX_ELF_WORD_BYTES (htab); 3933 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); 3934 } 3935 } 3936 3937 else { 3938 /* If we are not emitting relocations for a 3939 general dynamic reference, then we must be in a 3940 static link or an executable link with the 3941 symbol binding locally. Mark it as belonging 3942 to module 1, the executable. */ 3943 TILEGX_ELF_PUT_WORD (htab, output_bfd, 1, 3944 htab->elf.sgot->contents + off ); 3945 TILEGX_ELF_PUT_WORD (htab, output_bfd, 3946 relocation - dtpoff_base (info), 3947 htab->elf.sgot->contents + off + 3948 TILEGX_ELF_WORD_BYTES (htab)); 3949 } 3950 break; 3951 } 3952 } 3953 3954 if (off >= (bfd_vma) -2) 3955 abort (); 3956 3957 relocation = off - got_base; 3958 unresolved_reloc = FALSE; 3959 howto = tilegx_elf_howto_table + r_type; 3960 break; 3961 3962 default: 3963 break; 3964 } 3965 3966 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections 3967 because such sections are not SEC_ALLOC and thus ld.so will 3968 not process them. */ 3969 if (unresolved_reloc 3970 && !((input_section->flags & SEC_DEBUGGING) != 0 3971 && h->def_dynamic) 3972 && _bfd_elf_section_offset (output_bfd, info, input_section, 3973 rel->r_offset) != (bfd_vma) -1) 3974 _bfd_error_handler 3975 /* xgettext:c-format */ 3976 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), 3977 input_bfd, 3978 input_section, 3979 (long) rel->r_offset, 3980 howto->name, 3981 h->root.root.string); 3982 3983 r = bfd_reloc_continue; 3984 3985 /* Get the operand creation function, if any. */ 3986 create_func = reloc_to_create_func[r_type]; 3987 if (create_func == NULL) 3988 { 3989 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3990 contents, rel->r_offset, 3991 relocation, rel->r_addend); 3992 } 3993 else 3994 { 3995 if (howto->pc_relative) 3996 { 3997 relocation -= 3998 input_section->output_section->vma + input_section->output_offset; 3999 if (howto->pcrel_offset) 4000 relocation -= rel->r_offset; 4001 } 4002 4003 bfd_byte *data; 4004 4005 /* Add the relocation addend if any to the final target value */ 4006 relocation += rel->r_addend; 4007 4008 /* Do basic range checking */ 4009 r = bfd_check_overflow (howto->complain_on_overflow, 4010 howto->bitsize, 4011 howto->rightshift, 4012 TILEGX_ELF_WORD_BYTES (htab) * 8, 4013 relocation); 4014 4015 /* 4016 * Write the relocated value out into the raw section data. 4017 * Don't put a relocation out in the .rela section. 4018 */ 4019 tilegx_bundle_bits mask = create_func(-1); 4020 tilegx_bundle_bits value = create_func(relocation >> howto->rightshift); 4021 4022 /* Only touch bytes while the mask is not 0, so we 4023 don't write to out of bounds memory if this is actually 4024 a 16-bit switch instruction. */ 4025 for (data = contents + rel->r_offset; mask != 0; data++) 4026 { 4027 bfd_byte byte_mask = (bfd_byte)mask; 4028 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask); 4029 mask >>= 8; 4030 value >>= 8; 4031 } 4032 } 4033 4034 if (r != bfd_reloc_ok) 4035 { 4036 const char *msg = NULL; 4037 4038 switch (r) 4039 { 4040 case bfd_reloc_overflow: 4041 (*info->callbacks->reloc_overflow) 4042 (info, (h ? &h->root : NULL), name, howto->name, 4043 (bfd_vma) 0, input_bfd, input_section, rel->r_offset); 4044 break; 4045 4046 case bfd_reloc_undefined: 4047 (*info->callbacks->undefined_symbol) 4048 (info, name, input_bfd, input_section, rel->r_offset, TRUE); 4049 break; 4050 4051 case bfd_reloc_outofrange: 4052 msg = _("internal error: out of range error"); 4053 break; 4054 4055 case bfd_reloc_notsupported: 4056 msg = _("internal error: unsupported relocation error"); 4057 break; 4058 4059 case bfd_reloc_dangerous: 4060 msg = _("internal error: dangerous relocation"); 4061 break; 4062 4063 default: 4064 msg = _("internal error: unknown error"); 4065 break; 4066 } 4067 4068 if (msg) 4069 (*info->callbacks->warning) (info, msg, name, input_bfd, 4070 input_section, rel->r_offset); 4071 } 4072 } 4073 4074 return TRUE; 4075} 4076 4077/* Finish up dynamic symbol handling. We set the contents of various 4078 dynamic sections here. */ 4079 4080bfd_boolean 4081tilegx_elf_finish_dynamic_symbol (bfd *output_bfd, 4082 struct bfd_link_info *info, 4083 struct elf_link_hash_entry *h, 4084 Elf_Internal_Sym *sym) 4085{ 4086 struct tilegx_elf_link_hash_table *htab; 4087 4088 htab = tilegx_elf_hash_table (info); 4089 BFD_ASSERT (htab != NULL); 4090 4091 if (h->plt.offset != (bfd_vma) -1) 4092 { 4093 asection *splt; 4094 asection *srela; 4095 asection *sgotplt; 4096 Elf_Internal_Rela rela; 4097 bfd_byte *loc; 4098 bfd_vma r_offset; 4099 const struct elf_backend_data *bed = get_elf_backend_data (output_bfd); 4100 4101 4102 int rela_index; 4103 4104 /* This symbol has an entry in the PLT. Set it up. */ 4105 4106 BFD_ASSERT (h->dynindx != -1); 4107 4108 splt = htab->elf.splt; 4109 srela = htab->elf.srelplt; 4110 sgotplt = htab->elf.sgotplt; 4111 4112 if (splt == NULL || srela == NULL) 4113 abort (); 4114 4115 /* Fill in the entry in the procedure linkage table. */ 4116 rela_index = tilegx_plt_entry_build (output_bfd, htab, splt, sgotplt, 4117 h->plt.offset, &r_offset); 4118 4119 /* Fill in the entry in the global offset table, which initially points 4120 to the beginning of the plt. */ 4121 TILEGX_ELF_PUT_WORD (htab, output_bfd, 4122 splt->output_section->vma + splt->output_offset, 4123 sgotplt->contents + r_offset); 4124 4125 /* Fill in the entry in the .rela.plt section. */ 4126 rela.r_offset = (sgotplt->output_section->vma 4127 + sgotplt->output_offset 4128 + r_offset); 4129 rela.r_addend = 0; 4130 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_JMP_SLOT); 4131 4132 loc = srela->contents + rela_index * TILEGX_ELF_RELA_BYTES (htab); 4133 bed->s->swap_reloca_out (output_bfd, &rela, loc); 4134 4135 if (!h->def_regular) 4136 { 4137 /* Mark the symbol as undefined, rather than as defined in 4138 the .plt section. Leave the value alone. */ 4139 sym->st_shndx = SHN_UNDEF; 4140 /* If the symbol is weak, we do need to clear the value. 4141 Otherwise, the PLT entry would provide a definition for 4142 the symbol even if the symbol wasn't defined anywhere, 4143 and so the symbol would never be NULL. */ 4144 if (!h->ref_regular_nonweak) 4145 sym->st_value = 0; 4146 } 4147 } 4148 4149 if (h->got.offset != (bfd_vma) -1 4150 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_GD 4151 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_IE) 4152 { 4153 asection *sgot; 4154 asection *srela; 4155 Elf_Internal_Rela rela; 4156 4157 /* This symbol has an entry in the GOT. Set it up. */ 4158 4159 sgot = htab->elf.sgot; 4160 srela = htab->elf.srelgot; 4161 BFD_ASSERT (sgot != NULL && srela != NULL); 4162 4163 rela.r_offset = (sgot->output_section->vma 4164 + sgot->output_offset 4165 + (h->got.offset &~ (bfd_vma) 1)); 4166 4167 /* If this is a -Bsymbolic link, and the symbol is defined 4168 locally, we just want to emit a RELATIVE reloc. Likewise if 4169 the symbol was forced to be local because of a version file. 4170 The entry in the global offset table will already have been 4171 initialized in the relocate_section function. */ 4172 if (bfd_link_pic (info) 4173 && (info->symbolic || h->dynindx == -1) 4174 && h->def_regular) 4175 { 4176 asection *sec = h->root.u.def.section; 4177 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE); 4178 rela.r_addend = (h->root.u.def.value 4179 + sec->output_section->vma 4180 + sec->output_offset); 4181 } 4182 else 4183 { 4184 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_GLOB_DAT); 4185 rela.r_addend = 0; 4186 } 4187 4188 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, 4189 sgot->contents + (h->got.offset & ~(bfd_vma) 1)); 4190 tilegx_elf_append_rela (output_bfd, srela, &rela); 4191 } 4192 4193 if (h->needs_copy) 4194 { 4195 asection *s; 4196 Elf_Internal_Rela rela; 4197 4198 /* This symbols needs a copy reloc. Set it up. */ 4199 BFD_ASSERT (h->dynindx != -1); 4200 4201 if (h->root.u.def.section == htab->elf.sdynrelro) 4202 s = htab->elf.sreldynrelro; 4203 else 4204 s = htab->elf.srelbss; 4205 BFD_ASSERT (s != NULL); 4206 4207 rela.r_offset = (h->root.u.def.value 4208 + h->root.u.def.section->output_section->vma 4209 + h->root.u.def.section->output_offset); 4210 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_COPY); 4211 rela.r_addend = 0; 4212 tilegx_elf_append_rela (output_bfd, s, &rela); 4213 } 4214 4215 /* Mark some specially defined symbols as absolute. */ 4216 if (h == htab->elf.hdynamic 4217 || (h == htab->elf.hgot || h == htab->elf.hplt)) 4218 sym->st_shndx = SHN_ABS; 4219 4220 return TRUE; 4221} 4222 4223/* Finish up the dynamic sections. */ 4224 4225static bfd_boolean 4226tilegx_finish_dyn (bfd *output_bfd, struct bfd_link_info *info, 4227 bfd *dynobj, asection *sdyn, 4228 asection *splt ATTRIBUTE_UNUSED) 4229{ 4230 struct tilegx_elf_link_hash_table *htab; 4231 const struct elf_backend_data *bed; 4232 bfd_byte *dyncon, *dynconend; 4233 size_t dynsize; 4234 4235 htab = tilegx_elf_hash_table (info); 4236 BFD_ASSERT (htab != NULL); 4237 bed = get_elf_backend_data (output_bfd); 4238 dynsize = bed->s->sizeof_dyn; 4239 dynconend = sdyn->contents + sdyn->size; 4240 4241 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize) 4242 { 4243 Elf_Internal_Dyn dyn; 4244 asection *s; 4245 4246 bed->s->swap_dyn_in (dynobj, dyncon, &dyn); 4247 4248 switch (dyn.d_tag) 4249 { 4250 case DT_PLTGOT: 4251 s = htab->elf.sgotplt; 4252 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 4253 break; 4254 case DT_JMPREL: 4255 s = htab->elf.srelplt; 4256 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 4257 break; 4258 case DT_PLTRELSZ: 4259 s = htab->elf.srelplt; 4260 dyn.d_un.d_val = s->size; 4261 break; 4262 default: 4263 continue; 4264 } 4265 4266 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon); 4267 } 4268 return TRUE; 4269} 4270 4271bfd_boolean 4272tilegx_elf_finish_dynamic_sections (bfd *output_bfd, 4273 struct bfd_link_info *info) 4274{ 4275 bfd *dynobj; 4276 asection *sdyn; 4277 struct tilegx_elf_link_hash_table *htab; 4278 size_t pad_size; 4279 4280 htab = tilegx_elf_hash_table (info); 4281 BFD_ASSERT (htab != NULL); 4282 dynobj = htab->elf.dynobj; 4283 4284 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 4285 4286 if (elf_hash_table (info)->dynamic_sections_created) 4287 { 4288 asection *splt; 4289 bfd_boolean ret; 4290 4291 splt = htab->elf.splt; 4292 BFD_ASSERT (splt != NULL && sdyn != NULL); 4293 4294 ret = tilegx_finish_dyn (output_bfd, info, dynobj, sdyn, splt); 4295 4296 if (ret != TRUE) 4297 return ret; 4298 4299 /* Fill in the head and tail entries in the procedure linkage table. */ 4300 if (splt->size > 0) 4301 { 4302 memcpy (splt->contents, 4303 ABI_64_P (output_bfd) ? 4304 tilegx64_plt0_entry : tilegx32_plt0_entry, 4305 PLT_HEADER_SIZE); 4306 4307 memcpy (splt->contents + splt->size 4308 - PLT_ENTRY_SIZE + PLT_HEADER_SIZE, 4309 ABI_64_P (output_bfd) ? 4310 tilegx64_plt_tail_entry : tilegx32_plt_tail_entry, 4311 PLT_TAIL_SIZE); 4312 /* Add padding so that the plt section is a multiple of its 4313 entry size. */ 4314 pad_size = PLT_ENTRY_SIZE - PLT_HEADER_SIZE - PLT_TAIL_SIZE; 4315 memset (splt->contents + splt->size - pad_size, 0, pad_size); 4316 } 4317 4318 elf_section_data (splt->output_section)->this_hdr.sh_entsize 4319 = PLT_ENTRY_SIZE; 4320 } 4321 4322 if (htab->elf.sgotplt) 4323 { 4324 if (bfd_is_abs_section (htab->elf.sgotplt->output_section)) 4325 { 4326 _bfd_error_handler 4327 (_("discarded output section: `%A'"), htab->elf.sgotplt); 4328 return FALSE; 4329 } 4330 4331 if (htab->elf.sgotplt->size > 0) 4332 { 4333 /* Write the first two entries in .got.plt, needed for the dynamic 4334 linker. */ 4335 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) -1, 4336 htab->elf.sgotplt->contents); 4337 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) 0, 4338 htab->elf.sgotplt->contents 4339 + GOT_ENTRY_SIZE (htab)); 4340 } 4341 4342 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4343 GOT_ENTRY_SIZE (htab); 4344 } 4345 4346 if (htab->elf.sgot) 4347 { 4348 if (htab->elf.sgot->size > 0) 4349 { 4350 /* Set the first entry in the global offset table to the address of 4351 the dynamic section. */ 4352 bfd_vma val = (sdyn ? 4353 sdyn->output_section->vma + sdyn->output_offset : 4354 0); 4355 TILEGX_ELF_PUT_WORD (htab, output_bfd, val, 4356 htab->elf.sgot->contents); 4357 } 4358 4359 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4360 GOT_ENTRY_SIZE (htab); 4361 } 4362 4363 return TRUE; 4364} 4365 4366 4367 4368/* Return address for Ith PLT stub in section PLT, for relocation REL 4369 or (bfd_vma) -1 if it should not be included. */ 4370 4371bfd_vma 4372tilegx_elf_plt_sym_val (bfd_vma i, const asection *plt, 4373 const arelent *rel ATTRIBUTE_UNUSED) 4374{ 4375 return plt->vma + PLT_HEADER_SIZE + i * PLT_ENTRY_SIZE; 4376} 4377 4378enum elf_reloc_type_class 4379tilegx_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, 4380 const asection *rel_sec ATTRIBUTE_UNUSED, 4381 const Elf_Internal_Rela *rela) 4382{ 4383 switch ((int) TILEGX_ELF_R_TYPE (rela->r_info)) 4384 { 4385 case R_TILEGX_RELATIVE: 4386 return reloc_class_relative; 4387 case R_TILEGX_JMP_SLOT: 4388 return reloc_class_plt; 4389 case R_TILEGX_COPY: 4390 return reloc_class_copy; 4391 default: 4392 return reloc_class_normal; 4393 } 4394} 4395 4396int 4397tilegx_additional_program_headers (bfd *abfd, 4398 struct bfd_link_info *info ATTRIBUTE_UNUSED) 4399{ 4400 /* Each .intrpt section specified by the user adds another PT_LOAD 4401 header since the sections are discontiguous. */ 4402 static const char intrpt_sections[4][9] = 4403 { 4404 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3" 4405 }; 4406 int count = 0; 4407 int i; 4408 4409 for (i = 0; i < 4; i++) 4410 { 4411 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]); 4412 if (sec != NULL && (sec->flags & SEC_LOAD) != 0) 4413 ++count; 4414 } 4415 4416 /* Add four "padding" headers in to leave room in case a custom linker 4417 script does something fancy. Otherwise ld complains that it ran 4418 out of program headers and refuses to link. */ 4419 count += 4; 4420 4421 return count; 4422} 4423 4424 4425bfd_boolean 4426_bfd_tilegx_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) 4427{ 4428 bfd *obfd = info->output_bfd; 4429 const char *targ1 = bfd_get_target (ibfd); 4430 const char *targ2 = bfd_get_target (obfd); 4431 4432 if (strcmp (targ1, targ2) != 0) 4433 { 4434 _bfd_error_handler 4435 /* xgettext:c-format */ 4436 (_("%B: Cannot link together %s and %s objects."), 4437 ibfd, targ1, targ2); 4438 bfd_set_error (bfd_error_bad_value); 4439 return FALSE; 4440 } 4441 4442 return TRUE; 4443} 4444