1/* TILEPro-specific support for 32-bit 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/tilepro.h" 26#include "opcode/tilepro.h" 27#include "libiberty.h" 28#include "elf32-tilepro.h" 29 30#define TILEPRO_BYTES_PER_WORD 4 31 32static reloc_howto_type tilepro_elf_howto_table [] = 33{ 34 /* This reloc does nothing. */ 35 HOWTO (R_TILEPRO_NONE, /* type */ 36 0, /* rightshift */ 37 3, /* size (0 = byte, 1 = short, 2 = long) */ 38 0, /* bitsize */ 39 FALSE, /* pc_relative */ 40 0, /* bitpos */ 41 complain_overflow_dont, /* complain_on_overflow */ 42 bfd_elf_generic_reloc, /* special_function */ 43 "R_TILEPRO_NONE", /* name */ 44 FALSE, /* partial_inplace */ 45 0, /* src_mask */ 46 0, /* dst_mask */ 47 FALSE), /* pcrel_offset */ 48 49 /* A 32 bit absolute relocation. */ 50 HOWTO (R_TILEPRO_32, /* type */ 51 0, /* rightshift */ 52 2, /* size (0 = byte, 1 = short, 2 = long) */ 53 32, /* bitsize */ 54 FALSE, /* pc_relative */ 55 0, /* bitpos */ 56 complain_overflow_dont, /* complain_on_overflow */ 57 bfd_elf_generic_reloc, /* special_function */ 58 "R_TILEPRO_32", /* name */ 59 FALSE, /* partial_inplace */ 60 0, /* src_mask */ 61 0xffffffff, /* dst_mask */ 62 FALSE), /* pcrel_offset */ 63 64 /* A 16 bit absolute relocation. */ 65 HOWTO (R_TILEPRO_16, /* type */ 66 0, /* rightshift */ 67 1, /* size (0 = byte, 1 = short, 2 = long) */ 68 16, /* bitsize */ 69 FALSE, /* pc_relative */ 70 0, /* bitpos */ 71 complain_overflow_bitfield, /* complain_on_overflow */ 72 bfd_elf_generic_reloc, /* special_function */ 73 "R_TILEPRO_16", /* name */ 74 FALSE, /* partial_inplace */ 75 0, /* src_mask */ 76 0xffff, /* dst_mask */ 77 FALSE), /* pcrel_offset */ 78 79 /* An 8 bit absolute relocation. */ 80 HOWTO (R_TILEPRO_8, /* type */ 81 0, /* rightshift */ 82 0, /* size (0 = byte, 1 = short, 2 = long) */ 83 8, /* bitsize */ 84 FALSE, /* pc_relative */ 85 0, /* bitpos */ 86 complain_overflow_unsigned, /* complain_on_overflow */ 87 bfd_elf_generic_reloc, /* special_function */ 88 "R_TILEPRO_8", /* name */ 89 FALSE, /* partial_inplace */ 90 0, /* src_mask */ 91 0xff, /* dst_mask */ 92 FALSE), /* pcrel_offset */ 93 94 /* A 32 bit pc-relative relocation. */ 95 HOWTO (R_TILEPRO_32_PCREL,/* type */ 96 0, /* rightshift */ 97 2, /* size (0 = byte, 1 = short, 2 = long) */ 98 32, /* bitsize */ 99 TRUE, /* pc_relative */ 100 0, /* bitpos */ 101 complain_overflow_dont, /* complain_on_overflow */ 102 bfd_elf_generic_reloc, /* special_function */ 103 "R_TILEPRO_32_PCREL", /* name */ 104 FALSE, /* partial_inplace */ 105 0, /* src_mask */ 106 0xffffffff, /* dst_mask */ 107 TRUE), /* pcrel_offset */ 108 109 /* A 16 bit pc-relative relocation. */ 110 HOWTO (R_TILEPRO_16_PCREL,/* type */ 111 0, /* rightshift */ 112 1, /* size (0 = byte, 1 = short, 2 = long) */ 113 16, /* bitsize */ 114 TRUE, /* pc_relative */ 115 0, /* bitpos */ 116 complain_overflow_signed, /* complain_on_overflow */ 117 bfd_elf_generic_reloc, /* special_function */ 118 "R_TILEPRO_16_PCREL", /* name */ 119 FALSE, /* partial_inplace */ 120 0, /* src_mask */ 121 0xffff, /* dst_mask */ 122 TRUE), /* pcrel_offset */ 123 124 /* An 8 bit pc-relative relocation. */ 125 HOWTO (R_TILEPRO_8_PCREL, /* type */ 126 0, /* rightshift */ 127 0, /* size (0 = byte, 1 = short, 2 = long) */ 128 8, /* bitsize */ 129 TRUE, /* pc_relative */ 130 0, /* bitpos */ 131 complain_overflow_signed, /* complain_on_overflow */ 132 bfd_elf_generic_reloc, /* special_function */ 133 "R_TILEPRO_8_PCREL",/* name */ 134 FALSE, /* partial_inplace */ 135 0, /* src_mask */ 136 0xff, /* dst_mask */ 137 TRUE), /* pcrel_offset */ 138 139 /* A 16 bit relocation without overflow. */ 140 HOWTO (R_TILEPRO_LO16, /* type */ 141 0, /* rightshift */ 142 1, /* size (0 = byte, 1 = short, 2 = long) */ 143 16, /* bitsize */ 144 FALSE, /* pc_relative */ 145 0, /* bitpos */ 146 complain_overflow_dont,/* complain_on_overflow */ 147 bfd_elf_generic_reloc, /* special_function */ 148 "R_TILEPRO_LO16", /* name */ 149 FALSE, /* partial_inplace */ 150 0, /* src_mask */ 151 0xffff, /* dst_mask */ 152 FALSE), /* pcrel_offset */ 153 154 /* The high order 16 bits of an address. */ 155 HOWTO (R_TILEPRO_HI16, /* type */ 156 16, /* rightshift */ 157 1, /* size (0 = byte, 1 = short, 2 = long) */ 158 16, /* bitsize */ 159 FALSE, /* pc_relative */ 160 0, /* bitpos */ 161 complain_overflow_dont, /* complain_on_overflow */ 162 bfd_elf_generic_reloc, /* special_function */ 163 "R_TILEPRO_HI16", /* name */ 164 FALSE, /* partial_inplace */ 165 0, /* src_mask */ 166 0xffff, /* dst_mask */ 167 FALSE), /* pcrel_offset */ 168 169 /* The high order 16 bits of an address, plus 1 if the contents of 170 the low 16 bits, treated as a signed number, is negative. */ 171 HOWTO (R_TILEPRO_HA16, /* type */ 172 16, /* rightshift */ 173 1, /* size (0 = byte, 1 = short, 2 = long) */ 174 16, /* bitsize */ 175 FALSE, /* pc_relative */ 176 0, /* bitpos */ 177 complain_overflow_dont, /* complain_on_overflow */ 178 bfd_elf_generic_reloc, /* special_function */ 179 "R_TILEPRO_HA16", /* name */ 180 FALSE, /* partial_inplace */ 181 0, /* src_mask */ 182 0xffff, /* dst_mask */ 183 FALSE), /* pcrel_offset */ 184 185 HOWTO (R_TILEPRO_COPY, /* type */ 186 0, /* rightshift */ 187 0, /* size (0 = byte, 1 = short, 2 = long) */ 188 0, /* bitsize */ 189 FALSE, /* pc_relative */ 190 0, /* bitpos */ 191 complain_overflow_dont, /* complain_on_overflow */ 192 bfd_elf_generic_reloc, /* special_function */ 193 "R_TILEPRO_COPY", /* name */ 194 FALSE, /* partial_inplace */ 195 0, /* src_mask */ 196 0, /* dst_mask */ 197 TRUE), /* pcrel_offset */ 198 199 HOWTO (R_TILEPRO_GLOB_DAT, /* type */ 200 0, /* rightshift */ 201 0, /* size (0 = byte, 1 = short, 2 = long) */ 202 0, /* bitsize */ 203 FALSE, /* pc_relative */ 204 0, /* bitpos */ 205 complain_overflow_dont, /* complain_on_overflow */ 206 bfd_elf_generic_reloc, /* special_function */ 207 "R_TILEPRO_GLOB_DAT", /* name */ 208 FALSE, /* partial_inplace */ 209 0, /* src_mask */ 210 0, /* dst_mask */ 211 TRUE), /* pcrel_offset */ 212 213 HOWTO (R_TILEPRO_JMP_SLOT, /* type */ 214 0, /* rightshift */ 215 0, /* size (0 = byte, 1 = short, 2 = long) */ 216 0, /* bitsize */ 217 FALSE, /* pc_relative */ 218 0, /* bitpos */ 219 complain_overflow_dont, /* complain_on_overflow */ 220 bfd_elf_generic_reloc, /* special_function */ 221 "R_TILEPRO_JMP_SLOT", /* name */ 222 FALSE, /* partial_inplace */ 223 0, /* src_mask */ 224 0, /* dst_mask */ 225 TRUE), /* pcrel_offset */ 226 227 HOWTO (R_TILEPRO_RELATIVE, /* type */ 228 0, /* rightshift */ 229 0, /* size (0 = byte, 1 = short, 2 = long) */ 230 0, /* bitsize */ 231 FALSE, /* pc_relative */ 232 0, /* bitpos */ 233 complain_overflow_dont, /* complain_on_overflow */ 234 bfd_elf_generic_reloc, /* special_function */ 235 "R_TILEPRO_RELATIVE", /* name */ 236 FALSE, /* partial_inplace */ 237 0, /* src_mask */ 238 0, /* dst_mask */ 239 TRUE), /* pcrel_offset */ 240 241 HOWTO (R_TILEPRO_BROFF_X1, /* type */ 242 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ 243 2, /* size (0 = byte, 1 = short, 2 = long) */ 244 17, /* bitsize */ 245 TRUE, /* pc_relative */ 246 0, /* bitpos */ 247 complain_overflow_signed, /* complain_on_overflow */ 248 bfd_elf_generic_reloc, /* special_function */ 249 "R_TILEPRO_BROFF_X1", /* name */ 250 FALSE, /* partial_inplace */ 251 0, /* src_mask */ 252 -1, /* dst_mask */ 253 TRUE), /* pcrel_offset */ 254 255 HOWTO (R_TILEPRO_JOFFLONG_X1, /* type */ 256 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ 257 2, /* size (0 = byte, 1 = short, 2 = long) */ 258 29, /* bitsize */ 259 TRUE, /* pc_relative */ 260 0, /* bitpos */ 261 complain_overflow_signed,/* complain_on_overflow */ 262 bfd_elf_generic_reloc, /* special_function */ 263 "R_TILEPRO_JOFFLONG_X1", /* name */ 264 FALSE, /* partial_inplace */ 265 0, /* src_mask */ 266 -1, /* dst_mask */ 267 TRUE), /* pcrel_offset */ 268 269 HOWTO (R_TILEPRO_JOFFLONG_X1_PLT, /* type */ 270 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ 271 2, /* size (0 = byte, 1 = short, 2 = long) */ 272 29, /* bitsize */ 273 TRUE, /* pc_relative */ 274 0, /* bitpos */ 275 complain_overflow_signed,/* complain_on_overflow */ 276 bfd_elf_generic_reloc, /* special_function */ 277 "R_TILEPRO_JOFFLONG_X1_PLT", /* name */ 278 FALSE, /* partial_inplace */ 279 0, /* src_mask */ 280 -1, /* dst_mask */ 281 TRUE), /* pcrel_offset */ 282 283#define TILEPRO_IMM_HOWTO(name, size, bitsize) \ 284 HOWTO (name, 0, size, bitsize, FALSE, 0, \ 285 complain_overflow_signed, bfd_elf_generic_reloc, \ 286 #name, FALSE, 0, -1, FALSE) 287 288#define TILEPRO_UIMM_HOWTO(name, size, bitsize) \ 289 HOWTO (name, 0, size, bitsize, FALSE, 0, \ 290 complain_overflow_unsigned, bfd_elf_generic_reloc, \ 291 #name, FALSE, 0, -1, FALSE) 292 293 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X0, 0, 8), 294 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y0, 0, 8), 295 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X1, 0, 8), 296 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y1, 0, 8), 297 TILEPRO_UIMM_HOWTO(R_TILEPRO_MT_IMM15_X1, 1, 15), 298 TILEPRO_UIMM_HOWTO(R_TILEPRO_MF_IMM15_X1, 1, 15), 299 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X0, 1, 16), 300 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X1, 1, 16), 301 302#define TILEPRO_IMM16_HOWTO(name, rshift) \ 303 HOWTO (name, rshift, 1, 16, FALSE, 0, \ 304 complain_overflow_dont, bfd_elf_generic_reloc, \ 305 #name, FALSE, 0, 0xffff, FALSE) 306 307 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_LO, 0), 308 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_LO, 0), 309 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_HI, 16), 310 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_HI, 16), 311 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_HA, 16), 312 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_HA, 16), 313 314 /* PC-relative offsets. */ 315 316 HOWTO (R_TILEPRO_IMM16_X0_PCREL, /* type */ 317 0, /* rightshift */ 318 1, /* size (0 = byte, 1 = short, 2 = long) */ 319 16, /* bitsize */ 320 TRUE, /* pc_relative */ 321 0, /* bitpos */ 322 complain_overflow_signed, /* complain_on_overflow */ 323 bfd_elf_generic_reloc, /* special_function */ 324 "R_TILEPRO_IMM16_X0_PCREL",/* name */ 325 FALSE, /* partial_inplace */ 326 0, /* src_mask */ 327 -1, /* dst_mask */ 328 TRUE), /* pcrel_offset */ 329 330 HOWTO (R_TILEPRO_IMM16_X1_PCREL, /* type */ 331 0, /* rightshift */ 332 1, /* size (0 = byte, 1 = short, 2 = long) */ 333 16, /* bitsize */ 334 TRUE, /* pc_relative */ 335 0, /* bitpos */ 336 complain_overflow_signed, /* complain_on_overflow */ 337 bfd_elf_generic_reloc, /* special_function */ 338 "R_TILEPRO_IMM16_X1_PCREL",/* name */ 339 FALSE, /* partial_inplace */ 340 0, /* src_mask */ 341 -1, /* dst_mask */ 342 TRUE), /* pcrel_offset */ 343 344#define TILEPRO_IMM16_HOWTO_PCREL(name, rshift) \ 345 HOWTO (name, rshift, 1, 16, TRUE, 0, \ 346 complain_overflow_dont, bfd_elf_generic_reloc, \ 347 #name, FALSE, 0, 0xffff, TRUE) 348 349 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X0_LO_PCREL, 0), 350 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X1_LO_PCREL, 0), 351 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X0_HI_PCREL, 16), 352 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X1_HI_PCREL, 16), 353 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X0_HA_PCREL, 16), 354 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X1_HA_PCREL, 16), 355 356 /* Byte offset into GOT for a particular symbol. */ 357 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X0_GOT, 1, 16), 358 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X1_GOT, 1, 16), 359 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_GOT_LO, 0), 360 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_GOT_LO, 0), 361 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_GOT_HI, 16), 362 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_GOT_HI, 16), 363 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_GOT_HA, 16), 364 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_GOT_HA, 16), 365 366 TILEPRO_UIMM_HOWTO(R_TILEPRO_MMSTART_X0, 0, 5), 367 TILEPRO_UIMM_HOWTO(R_TILEPRO_MMEND_X0, 0, 5), 368 TILEPRO_UIMM_HOWTO(R_TILEPRO_MMSTART_X1, 0, 5), 369 TILEPRO_UIMM_HOWTO(R_TILEPRO_MMEND_X1, 0, 5), 370 371 TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_X0, 0, 5), 372 TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_X1, 0, 5), 373 TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_Y0, 0, 5), 374 TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_Y1, 0, 5), 375 376 TILEPRO_IMM_HOWTO(R_TILEPRO_DEST_IMM8_X1, 0, 8), 377 378 /* These relocs are currently not defined. */ 379 EMPTY_HOWTO (56), 380 EMPTY_HOWTO (57), 381 EMPTY_HOWTO (58), 382 EMPTY_HOWTO (59), 383 384 HOWTO (R_TILEPRO_TLS_GD_CALL, /* type */ 385 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ 386 2, /* size (0 = byte, 1 = short, 2 = long) */ 387 29, /* bitsize */ 388 TRUE, /* pc_relative */ 389 0, /* bitpos */ 390 complain_overflow_signed,/* complain_on_overflow */ 391 bfd_elf_generic_reloc, /* special_function */ 392 "R_TILEPRO_TLS_GD_CALL", /* name */ 393 FALSE, /* partial_inplace */ 394 0, /* src_mask */ 395 -1, /* dst_mask */ 396 TRUE), /* pcrel_offset */ 397 398 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X0_TLS_GD_ADD, 0, 8), 399 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X1_TLS_GD_ADD, 0, 8), 400 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y0_TLS_GD_ADD, 0, 8), 401 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y1_TLS_GD_ADD, 0, 8), 402 TILEPRO_IMM_HOWTO(R_TILEPRO_TLS_IE_LOAD, 0, 8), 403 404 /* Offsets into the GOT of TLS Descriptors. */ 405 406 HOWTO (R_TILEPRO_IMM16_X0_TLS_GD,/* type */ 407 0, /* rightshift */ 408 1, /* size (0 = byte, 1 = short, 2 = long) */ 409 16, /* bitsize */ 410 FALSE, /* pc_relative */ 411 0, /* bitpos */ 412 complain_overflow_signed, /* complain_on_overflow */ 413 bfd_elf_generic_reloc, /* special_function */ 414 "R_TILEPRO_IMM16_X0_TLS_GD",/* name */ 415 FALSE, /* partial_inplace */ 416 0, /* src_mask */ 417 0xffff, /* dst_mask */ 418 FALSE), /* pcrel_offset */ 419 420 HOWTO (R_TILEPRO_IMM16_X1_TLS_GD,/* type */ 421 0, /* rightshift */ 422 1, /* size (0 = byte, 1 = short, 2 = long) */ 423 16, /* bitsize */ 424 FALSE, /* pc_relative */ 425 0, /* bitpos */ 426 complain_overflow_signed, /* complain_on_overflow */ 427 bfd_elf_generic_reloc, /* special_function */ 428 "R_TILEPRO_IMM16_X1_TLS_GD",/* name */ 429 FALSE, /* partial_inplace */ 430 0, /* src_mask */ 431 0xffff, /* dst_mask */ 432 FALSE), /* pcrel_offset */ 433 434 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_GD_LO, 0), 435 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_GD_LO, 0), 436 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_GD_HI, 16), 437 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_GD_HI, 16), 438 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_GD_HA, 16), 439 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_GD_HA, 16), 440 441 /* Offsets into the GOT of TLS Descriptors. */ 442 443 HOWTO (R_TILEPRO_IMM16_X0_TLS_IE,/* type */ 444 0, /* rightshift */ 445 1, /* size (0 = byte, 1 = short, 2 = long) */ 446 16, /* bitsize */ 447 FALSE, /* pc_relative */ 448 0, /* bitpos */ 449 complain_overflow_signed, /* complain_on_overflow */ 450 bfd_elf_generic_reloc, /* special_function */ 451 "R_TILEPRO_IMM16_X0_TLS_IE",/* name */ 452 FALSE, /* partial_inplace */ 453 0, /* src_mask */ 454 -1, /* dst_mask */ 455 TRUE), /* pcrel_offset */ 456 457 HOWTO (R_TILEPRO_IMM16_X1_TLS_IE,/* type */ 458 0, /* rightshift */ 459 1, /* size (0 = byte, 1 = short, 2 = long) */ 460 16, /* bitsize */ 461 FALSE, /* pc_relative */ 462 0, /* bitpos */ 463 complain_overflow_signed, /* complain_on_overflow */ 464 bfd_elf_generic_reloc, /* special_function */ 465 "R_TILEPRO_IMM16_X1_TLS_IE",/* name */ 466 FALSE, /* partial_inplace */ 467 0, /* src_mask */ 468 -1, /* dst_mask */ 469 TRUE), /* pcrel_offset */ 470 471 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_IE_LO, 0), 472 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_IE_LO, 0), 473 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_IE_HI, 16), 474 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_IE_HI, 16), 475 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_IE_HA, 16), 476 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_IE_HA, 16), 477 478 /* These are common with the Solaris TLS implementation. */ 479 HOWTO(R_TILEPRO_TLS_DTPMOD32, 0, 0, 0, FALSE, 0, complain_overflow_dont, 480 bfd_elf_generic_reloc, "R_TILEPRO_TLS_DTPMOD32", 481 FALSE, 0, 0, TRUE), 482 HOWTO(R_TILEPRO_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, 483 bfd_elf_generic_reloc, "R_TILEPRO_TLS_DTPOFF32", 484 FALSE, 0, 0xFFFFFFFF, TRUE), 485 HOWTO(R_TILEPRO_TLS_TPOFF32, 0, 0, 0, FALSE, 0, complain_overflow_dont, 486 bfd_elf_generic_reloc, "R_TILEPRO_TLS_TPOFF32", 487 FALSE, 0, 0, TRUE), 488 489 HOWTO (R_TILEPRO_IMM16_X0_TLS_LE,/* type */ 490 0, /* rightshift */ 491 1, /* size (0 = byte, 1 = short, 2 = long) */ 492 16, /* bitsize */ 493 FALSE, /* pc_relative */ 494 0, /* bitpos */ 495 complain_overflow_signed, /* complain_on_overflow */ 496 bfd_elf_generic_reloc, /* special_function */ 497 "R_TILEPRO_IMM16_X0_TLS_LE",/* name */ 498 FALSE, /* partial_inplace */ 499 0, /* src_mask */ 500 -1, /* dst_mask */ 501 TRUE), /* pcrel_offset */ 502 503 HOWTO (R_TILEPRO_IMM16_X1_TLS_LE,/* type */ 504 0, /* rightshift */ 505 1, /* size (0 = byte, 1 = short, 2 = long) */ 506 16, /* bitsize */ 507 FALSE, /* pc_relative */ 508 0, /* bitpos */ 509 complain_overflow_signed, /* complain_on_overflow */ 510 bfd_elf_generic_reloc, /* special_function */ 511 "R_TILEPRO_IMM16_X1_TLS_LE",/* name */ 512 FALSE, /* partial_inplace */ 513 0, /* src_mask */ 514 -1, /* dst_mask */ 515 TRUE), /* pcrel_offset */ 516 517 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_LE_LO, 0), 518 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_LE_LO, 0), 519 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_LE_HI, 16), 520 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_LE_HI, 16), 521 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_LE_HA, 16), 522 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_LE_HA, 16), 523}; 524 525static reloc_howto_type tilepro_elf_howto_table2 [] = 526{ 527 /* GNU extension to record C++ vtable hierarchy */ 528 HOWTO (R_TILEPRO_GNU_VTINHERIT, /* type */ 529 0, /* rightshift */ 530 2, /* size (0 = byte, 1 = short, 2 = long) */ 531 0, /* bitsize */ 532 FALSE, /* pc_relative */ 533 0, /* bitpos */ 534 complain_overflow_dont, /* complain_on_overflow */ 535 NULL, /* special_function */ 536 "R_TILEPRO_GNU_VTINHERIT", /* name */ 537 FALSE, /* partial_inplace */ 538 0, /* src_mask */ 539 0, /* dst_mask */ 540 FALSE), /* pcrel_offset */ 541 542 /* GNU extension to record C++ vtable member usage */ 543 HOWTO (R_TILEPRO_GNU_VTENTRY, /* type */ 544 0, /* rightshift */ 545 2, /* size (0 = byte, 1 = short, 2 = long) */ 546 0, /* bitsize */ 547 FALSE, /* pc_relative */ 548 0, /* bitpos */ 549 complain_overflow_dont, /* complain_on_overflow */ 550 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 551 "R_TILEPRO_GNU_VTENTRY", /* name */ 552 FALSE, /* partial_inplace */ 553 0, /* src_mask */ 554 0, /* dst_mask */ 555 FALSE), /* pcrel_offset */ 556 557}; 558 559/* Map BFD reloc types to TILEPRO ELF reloc types. */ 560 561typedef struct tilepro_reloc_map 562{ 563 bfd_reloc_code_real_type bfd_reloc_val; 564 unsigned int tilepro_reloc_val; 565 reloc_howto_type * table; 566} reloc_map; 567 568static const reloc_map tilepro_reloc_map [] = 569{ 570#define TH_REMAP(bfd, tilepro) \ 571 { bfd, tilepro, tilepro_elf_howto_table }, 572 573 /* Standard relocations. */ 574 TH_REMAP (BFD_RELOC_NONE, R_TILEPRO_NONE) 575 TH_REMAP (BFD_RELOC_32, R_TILEPRO_32) 576 TH_REMAP (BFD_RELOC_16, R_TILEPRO_16) 577 TH_REMAP (BFD_RELOC_8, R_TILEPRO_8) 578 TH_REMAP (BFD_RELOC_32_PCREL, R_TILEPRO_32_PCREL) 579 TH_REMAP (BFD_RELOC_16_PCREL, R_TILEPRO_16_PCREL) 580 TH_REMAP (BFD_RELOC_8_PCREL, R_TILEPRO_8_PCREL) 581 TH_REMAP (BFD_RELOC_LO16, R_TILEPRO_LO16) 582 TH_REMAP (BFD_RELOC_HI16, R_TILEPRO_HI16) 583 TH_REMAP (BFD_RELOC_HI16_S, R_TILEPRO_HA16) 584 585 /* Custom relocations. */ 586 TH_REMAP (BFD_RELOC_TILEPRO_COPY, R_TILEPRO_COPY) 587 TH_REMAP (BFD_RELOC_TILEPRO_GLOB_DAT, R_TILEPRO_GLOB_DAT) 588 TH_REMAP (BFD_RELOC_TILEPRO_JMP_SLOT, R_TILEPRO_JMP_SLOT) 589 TH_REMAP (BFD_RELOC_TILEPRO_RELATIVE, R_TILEPRO_RELATIVE) 590 TH_REMAP (BFD_RELOC_TILEPRO_BROFF_X1, R_TILEPRO_BROFF_X1) 591 TH_REMAP (BFD_RELOC_TILEPRO_JOFFLONG_X1, R_TILEPRO_JOFFLONG_X1) 592 TH_REMAP (BFD_RELOC_TILEPRO_JOFFLONG_X1_PLT, R_TILEPRO_JOFFLONG_X1_PLT) 593 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X0, R_TILEPRO_IMM8_X0) 594 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y0, R_TILEPRO_IMM8_Y0) 595 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X1, R_TILEPRO_IMM8_X1) 596 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y1, R_TILEPRO_IMM8_Y1) 597 TH_REMAP (BFD_RELOC_TILEPRO_DEST_IMM8_X1, R_TILEPRO_DEST_IMM8_X1) 598 TH_REMAP (BFD_RELOC_TILEPRO_MT_IMM15_X1, R_TILEPRO_MT_IMM15_X1) 599 TH_REMAP (BFD_RELOC_TILEPRO_MF_IMM15_X1, R_TILEPRO_MF_IMM15_X1) 600 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0, R_TILEPRO_IMM16_X0) 601 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1, R_TILEPRO_IMM16_X1) 602 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_LO, R_TILEPRO_IMM16_X0_LO) 603 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_LO, R_TILEPRO_IMM16_X1_LO) 604 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HI, R_TILEPRO_IMM16_X0_HI) 605 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HI, R_TILEPRO_IMM16_X1_HI) 606 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HA, R_TILEPRO_IMM16_X0_HA) 607 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HA, R_TILEPRO_IMM16_X1_HA) 608 609 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_PCREL, R_TILEPRO_IMM16_X0_PCREL) 610 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_PCREL, R_TILEPRO_IMM16_X1_PCREL) 611 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_LO_PCREL, R_TILEPRO_IMM16_X0_LO_PCREL) 612 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_LO_PCREL, R_TILEPRO_IMM16_X1_LO_PCREL) 613 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HI_PCREL, R_TILEPRO_IMM16_X0_HI_PCREL) 614 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HI_PCREL, R_TILEPRO_IMM16_X1_HI_PCREL) 615 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HA_PCREL, R_TILEPRO_IMM16_X0_HA_PCREL) 616 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HA_PCREL, R_TILEPRO_IMM16_X1_HA_PCREL) 617 618 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT, R_TILEPRO_IMM16_X0_GOT) 619 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT, R_TILEPRO_IMM16_X1_GOT) 620 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_LO, R_TILEPRO_IMM16_X0_GOT_LO) 621 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_LO, R_TILEPRO_IMM16_X1_GOT_LO) 622 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_HI, R_TILEPRO_IMM16_X0_GOT_HI) 623 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_HI, R_TILEPRO_IMM16_X1_GOT_HI) 624 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_HA, R_TILEPRO_IMM16_X0_GOT_HA) 625 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_HA, R_TILEPRO_IMM16_X1_GOT_HA) 626 627 TH_REMAP (BFD_RELOC_TILEPRO_MMSTART_X0, R_TILEPRO_MMSTART_X0) 628 TH_REMAP (BFD_RELOC_TILEPRO_MMEND_X0, R_TILEPRO_MMEND_X0) 629 TH_REMAP (BFD_RELOC_TILEPRO_MMSTART_X1, R_TILEPRO_MMSTART_X1) 630 TH_REMAP (BFD_RELOC_TILEPRO_MMEND_X1, R_TILEPRO_MMEND_X1) 631 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_X0, R_TILEPRO_SHAMT_X0) 632 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_X1, R_TILEPRO_SHAMT_X1) 633 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_Y0, R_TILEPRO_SHAMT_Y0) 634 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_Y1, R_TILEPRO_SHAMT_Y1) 635 636 TH_REMAP (BFD_RELOC_TILEPRO_TLS_GD_CALL, R_TILEPRO_TLS_GD_CALL) 637 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X0_TLS_GD_ADD, R_TILEPRO_IMM8_X0_TLS_GD_ADD) 638 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X1_TLS_GD_ADD, R_TILEPRO_IMM8_X1_TLS_GD_ADD) 639 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y0_TLS_GD_ADD, R_TILEPRO_IMM8_Y0_TLS_GD_ADD) 640 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y1_TLS_GD_ADD, R_TILEPRO_IMM8_Y1_TLS_GD_ADD) 641 TH_REMAP (BFD_RELOC_TILEPRO_TLS_IE_LOAD, R_TILEPRO_TLS_IE_LOAD) 642 643 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD, R_TILEPRO_IMM16_X0_TLS_GD) 644 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD, R_TILEPRO_IMM16_X1_TLS_GD) 645 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_LO, R_TILEPRO_IMM16_X0_TLS_GD_LO) 646 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_LO, R_TILEPRO_IMM16_X1_TLS_GD_LO) 647 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_HI, R_TILEPRO_IMM16_X0_TLS_GD_HI) 648 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_HI, R_TILEPRO_IMM16_X1_TLS_GD_HI) 649 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_HA, R_TILEPRO_IMM16_X0_TLS_GD_HA) 650 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_HA, R_TILEPRO_IMM16_X1_TLS_GD_HA) 651 652 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE, R_TILEPRO_IMM16_X0_TLS_IE) 653 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE, R_TILEPRO_IMM16_X1_TLS_IE) 654 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_LO, R_TILEPRO_IMM16_X0_TLS_IE_LO) 655 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_LO, R_TILEPRO_IMM16_X1_TLS_IE_LO) 656 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_HI, R_TILEPRO_IMM16_X0_TLS_IE_HI) 657 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_HI, R_TILEPRO_IMM16_X1_TLS_IE_HI) 658 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_HA, R_TILEPRO_IMM16_X0_TLS_IE_HA) 659 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_HA, R_TILEPRO_IMM16_X1_TLS_IE_HA) 660 661 TH_REMAP (BFD_RELOC_TILEPRO_TLS_DTPMOD32, R_TILEPRO_TLS_DTPMOD32) 662 TH_REMAP (BFD_RELOC_TILEPRO_TLS_DTPOFF32, R_TILEPRO_TLS_DTPOFF32) 663 TH_REMAP (BFD_RELOC_TILEPRO_TLS_TPOFF32, R_TILEPRO_TLS_TPOFF32) 664 665 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE, R_TILEPRO_IMM16_X0_TLS_LE) 666 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE, R_TILEPRO_IMM16_X1_TLS_LE) 667 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_LO, R_TILEPRO_IMM16_X0_TLS_LE_LO) 668 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_LO, R_TILEPRO_IMM16_X1_TLS_LE_LO) 669 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HI, R_TILEPRO_IMM16_X0_TLS_LE_HI) 670 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HI, R_TILEPRO_IMM16_X1_TLS_LE_HI) 671 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HA, R_TILEPRO_IMM16_X0_TLS_LE_HA) 672 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HA, R_TILEPRO_IMM16_X1_TLS_LE_HA) 673 674#undef TH_REMAP 675 676 { BFD_RELOC_VTABLE_INHERIT, R_TILEPRO_GNU_VTINHERIT, tilepro_elf_howto_table2 }, 677 { BFD_RELOC_VTABLE_ENTRY, R_TILEPRO_GNU_VTENTRY, tilepro_elf_howto_table2 }, 678}; 679 680 681 682/* The TILEPro linker needs to keep track of the number of relocs that it 683 decides to copy as dynamic relocs in check_relocs for each symbol. 684 This is so that it can later discard them if they are found to be 685 unnecessary. We store the information in a field extending the 686 regular ELF linker hash table. */ 687 688struct tilepro_elf_dyn_relocs 689{ 690 struct tilepro_elf_dyn_relocs *next; 691 692 /* The input section of the reloc. */ 693 asection *sec; 694 695 /* Total number of relocs copied for the input section. */ 696 bfd_size_type count; 697 698 /* Number of pc-relative relocs copied for the input section. */ 699 bfd_size_type pc_count; 700}; 701 702/* TILEPRO ELF linker hash entry. */ 703 704struct tilepro_elf_link_hash_entry 705{ 706 struct elf_link_hash_entry elf; 707 708 /* Track dynamic relocs copied for this symbol. */ 709 struct tilepro_elf_dyn_relocs *dyn_relocs; 710 711#define GOT_UNKNOWN 0 712#define GOT_NORMAL 1 713#define GOT_TLS_GD 2 714#define GOT_TLS_IE 4 715 unsigned char tls_type; 716}; 717 718#define tilepro_elf_hash_entry(ent) \ 719 ((struct tilepro_elf_link_hash_entry *)(ent)) 720 721struct _bfd_tilepro_elf_obj_tdata 722{ 723 struct elf_obj_tdata root; 724 725 /* tls_type for each local got entry. */ 726 char *local_got_tls_type; 727}; 728 729#define _bfd_tilepro_elf_tdata(abfd) \ 730 ((struct _bfd_tilepro_elf_obj_tdata *) (abfd)->tdata.any) 731 732#define _bfd_tilepro_elf_local_got_tls_type(abfd) \ 733 (_bfd_tilepro_elf_tdata (abfd)->local_got_tls_type) 734 735#define is_tilepro_elf(bfd) \ 736 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ 737 && elf_tdata (bfd) != NULL \ 738 && elf_object_id (bfd) == TILEPRO_ELF_DATA) 739 740/* Allocate TILEPro ELF private object data. */ 741 742static bfd_boolean 743tilepro_elf_mkobject (bfd *abfd) 744{ 745 return bfd_elf_allocate_object (abfd, 746 sizeof (struct _bfd_tilepro_elf_obj_tdata), 747 TILEPRO_ELF_DATA); 748} 749 750#include "elf/common.h" 751#include "elf/internal.h" 752 753struct tilepro_elf_link_hash_table 754{ 755 struct elf_link_hash_table elf; 756 757 /* Small local sym to section mapping cache. */ 758 struct sym_cache sym_cache; 759}; 760 761/* Get the Tilepro ELF linker hash table from a link_info structure. */ 762#define tilepro_elf_hash_table(p) \ 763 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 764 == TILEPRO_ELF_DATA \ 765 ? ((struct tilepro_elf_link_hash_table *) ((p)->hash)) : NULL) 766 767static reloc_howto_type * 768tilepro_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, 769 bfd_reloc_code_real_type code) 770{ 771 unsigned int i; 772 773 for (i = ARRAY_SIZE (tilepro_reloc_map); i--;) 774 { 775 const reloc_map * entry; 776 777 entry = tilepro_reloc_map + i; 778 779 if (entry->bfd_reloc_val == code) 780 return entry->table + (entry->tilepro_reloc_val 781 - entry->table[0].type); 782 } 783 784 return NULL; 785} 786 787static reloc_howto_type * 788tilepro_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 789 const char *r_name) 790{ 791 unsigned int i; 792 793 for (i = 0; 794 i < (sizeof (tilepro_elf_howto_table) 795 / sizeof (tilepro_elf_howto_table[0])); 796 i++) 797 if (tilepro_elf_howto_table[i].name != NULL 798 && strcasecmp (tilepro_elf_howto_table[i].name, r_name) == 0) 799 return &tilepro_elf_howto_table[i]; 800 801 return NULL; 802} 803 804/* Set the howto pointer for an TILEPro ELF reloc. */ 805 806static void 807tilepro_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED, 808 arelent * cache_ptr, 809 Elf_Internal_Rela * dst) 810{ 811 unsigned int r_type = ELF32_R_TYPE (dst->r_info); 812 813 if (r_type <= (unsigned int) R_TILEPRO_IMM16_X1_TLS_LE_HA) 814 cache_ptr->howto = &tilepro_elf_howto_table [r_type]; 815 else if (r_type - R_TILEPRO_GNU_VTINHERIT 816 <= (unsigned int) R_TILEPRO_GNU_VTENTRY) 817 cache_ptr->howto 818 = &tilepro_elf_howto_table2 [r_type - R_TILEPRO_GNU_VTINHERIT]; 819 else 820 abort (); 821} 822 823typedef tilepro_bundle_bits (*tilepro_create_func)(int); 824 825static const tilepro_create_func reloc_to_create_func[] = 826{ 827 /* The first fourteen relocation types don't correspond to operands */ 828 NULL, 829 NULL, 830 NULL, 831 NULL, 832 NULL, 833 NULL, 834 NULL, 835 NULL, 836 NULL, 837 NULL, 838 NULL, 839 NULL, 840 NULL, 841 NULL, 842 843 /* The remaining relocations are used for immediate operands */ 844 create_BrOff_X1, 845 create_JOffLong_X1, 846 create_JOffLong_X1, 847 create_Imm8_X0, 848 create_Imm8_Y0, 849 create_Imm8_X1, 850 create_Imm8_Y1, 851 create_MT_Imm15_X1, 852 create_MF_Imm15_X1, 853 create_Imm16_X0, 854 create_Imm16_X1, 855 create_Imm16_X0, 856 create_Imm16_X1, 857 create_Imm16_X0, 858 create_Imm16_X1, 859 create_Imm16_X0, 860 create_Imm16_X1, 861 create_Imm16_X0, 862 create_Imm16_X1, 863 create_Imm16_X0, 864 create_Imm16_X1, 865 create_Imm16_X0, 866 create_Imm16_X1, 867 create_Imm16_X0, 868 create_Imm16_X1, 869 create_Imm16_X0, 870 create_Imm16_X1, 871 create_Imm16_X0, 872 create_Imm16_X1, 873 create_Imm16_X0, 874 create_Imm16_X1, 875 create_Imm16_X0, 876 create_Imm16_X1, 877 create_MMStart_X0, 878 create_MMEnd_X0, 879 create_MMStart_X1, 880 create_MMEnd_X1, 881 create_ShAmt_X0, 882 create_ShAmt_X1, 883 create_ShAmt_Y0, 884 create_ShAmt_Y1, 885 886 create_Dest_Imm8_X1, 887 NULL, 888 NULL, 889 NULL, 890 NULL, 891 NULL, 892 NULL, 893 NULL, 894 NULL, 895 NULL, 896 NULL, 897 898 create_Imm16_X0, 899 create_Imm16_X1, 900 create_Imm16_X0, 901 create_Imm16_X1, 902 create_Imm16_X0, 903 create_Imm16_X1, 904 create_Imm16_X0, 905 create_Imm16_X1, 906 create_Imm16_X0, 907 create_Imm16_X1, 908 create_Imm16_X0, 909 create_Imm16_X1, 910 create_Imm16_X0, 911 create_Imm16_X1, 912 create_Imm16_X0, 913 create_Imm16_X1, 914 915 NULL, 916 NULL, 917 NULL, 918 919 create_Imm16_X0, 920 create_Imm16_X1, 921 create_Imm16_X0, 922 create_Imm16_X1, 923 create_Imm16_X0, 924 create_Imm16_X1, 925 create_Imm16_X0, 926 create_Imm16_X1, 927}; 928 929#define NELEMS(a) ((int) (sizeof (a) / sizeof ((a)[0]))) 930 931/* Support for core dump NOTE sections. */ 932 933static bfd_boolean 934tilepro_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 935{ 936 int offset; 937 size_t size; 938 939 if (note->descsz != TILEPRO_PRSTATUS_SIZEOF) 940 return FALSE; 941 942 /* pr_cursig */ 943 elf_tdata (abfd)->core->signal = 944 bfd_get_16 (abfd, note->descdata + TILEPRO_PRSTATUS_OFFSET_PR_CURSIG); 945 946 /* pr_pid */ 947 elf_tdata (abfd)->core->pid = 948 bfd_get_32 (abfd, note->descdata + TILEPRO_PRSTATUS_OFFSET_PR_PID); 949 950 /* pr_reg */ 951 offset = TILEPRO_PRSTATUS_OFFSET_PR_REG; 952 size = TILEPRO_GREGSET_T_SIZE; 953 954 /* Make a ".reg/999" section. */ 955 return _bfd_elfcore_make_pseudosection (abfd, ".reg", 956 size, note->descpos + offset); 957} 958 959static bfd_boolean 960tilepro_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 961{ 962 if (note->descsz != TILEPRO_PRPSINFO_SIZEOF) 963 return FALSE; 964 965 elf_tdata (abfd)->core->program 966 = _bfd_elfcore_strndup (abfd, 967 note->descdata + TILEPRO_PRPSINFO_OFFSET_PR_FNAME, 968 16); 969 elf_tdata (abfd)->core->command 970 = _bfd_elfcore_strndup (abfd, 971 note->descdata + TILEPRO_PRPSINFO_OFFSET_PR_PSARGS, 972 ELF_PR_PSARGS_SIZE); 973 974 975 /* Note that for some reason, a spurious space is tacked 976 onto the end of the args in some (at least one anyway) 977 implementations, so strip it off if it exists. */ 978 { 979 char *command = elf_tdata (abfd)->core->command; 980 int n = strlen (command); 981 982 if (0 < n && command[n - 1] == ' ') 983 command[n - 1] = '\0'; 984 } 985 986 return TRUE; 987} 988 989 990static void 991tilepro_elf_append_rela_32 (bfd *abfd, asection *s, Elf_Internal_Rela *rel) 992{ 993 Elf32_External_Rela *loc32; 994 995 loc32 = (Elf32_External_Rela *) s->contents; 996 loc32 += s->reloc_count++; 997 bfd_elf32_swap_reloca_out (abfd, rel, (bfd_byte *) loc32); 998} 999 1000/* PLT/GOT stuff */ 1001 1002/* The procedure linkage table starts with the following header: 1003 1004 { 1005 rli r29, r29, 16 1006 lwadd r28, r27, 4 1007 } 1008 lw r27, r27 1009 { 1010 info 10 ## SP not offset, return PC in LR 1011 jr r27 1012 } 1013 1014 Subsequent entries are the following, jumping to the header at the end: 1015 1016 lnk r28 10171: 1018 { 1019 auli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET> 1020 auli r27, r28, <_GLOBAL_OFFSET_TABLE_ - 1b> 1021 } 1022 { 1023 addli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET> 1024 addli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b> 1025 } 1026 { 1027 auli r29, zero, MY_PLT_INDEX 1028 lw r28, r28 1029 } 1030 { 1031 info 10 ## SP not offset, return PC in LR 1032 jr r28 1033 } 1034 1035 We initially store MY_PLT_INDEX in the high bits so that we can use the all 1036 16 bits as an unsigned offset; if we use the low bits we would get an 1037 unwanted sign extension. The PLT header then rotates the index to get the 1038 right value, before calling the resolution routine. This computation can 1039 fit in unused bundle slots so it's free. 1040 1041 This code sequence lets the code at at the start of the PLT determine 1042 which PLT entry was executed by examining 'r29'. 1043 1044 Note that MY_PLT_INDEX skips over the header entries, so the first 1045 actual jump table entry has index zero. 1046*/ 1047 1048#define PLT_HEADER_SIZE_IN_BUNDLES 3 1049#define PLT_ENTRY_SIZE_IN_BUNDLES 5 1050 1051#define PLT_HEADER_SIZE \ 1052 (PLT_HEADER_SIZE_IN_BUNDLES * TILEPRO_BUNDLE_SIZE_IN_BYTES) 1053#define PLT_ENTRY_SIZE \ 1054 (PLT_ENTRY_SIZE_IN_BUNDLES * TILEPRO_BUNDLE_SIZE_IN_BYTES) 1055 1056/* The size in bytes of an entry in the global offset table. */ 1057 1058#define GOT_ENTRY_SIZE TILEPRO_BYTES_PER_WORD 1059 1060#define GOTPLT_HEADER_SIZE (2 * GOT_ENTRY_SIZE) 1061 1062 1063static const bfd_byte 1064tilepro_plt0_entry[PLT_HEADER_SIZE] = 1065{ 1066 0x5d, 0x07, 0x03, 0x70, 1067 0x6e, 0x23, 0xd0, 0x30, /* { rli r29, r29, 16 ; lwadd r28, r27, 4 } */ 1068 0x00, 0x50, 0xba, 0x6d, 1069 0x00, 0x08, 0x6d, 0xdc, /* { lw r27, r27 } */ 1070 0xff, 0xaf, 0x10, 0x50, 1071 0x60, 0x03, 0x18, 0x08, /* { info 10 ; jr r27 } */ 1072}; 1073 1074static const bfd_byte 1075tilepro_short_plt_entry[PLT_ENTRY_SIZE] = 1076{ 1077 0x00, 0x50, 0x16, 0x70, 1078 0x0e, 0x00, 0x1a, 0x08, /* { lnk r28 } */ 1079 0x1c, 0x07, 0x00, 0xa0, 1080 0x8d, 0x03, 0x00, 0x18, /* { addli r28, r28, 0 ; addli r27, r28, 0 } */ 1081 0xdd, 0x0f, 0x00, 0x30, 1082 0x8e, 0x73, 0x0b, 0x40, /* { auli r29, zero, 0 ; lw r28, r28 } */ 1083 0xff, 0xaf, 0x10, 0x50, 1084 0x80, 0x03, 0x18, 0x08, /* { info 10 ; jr r28 } */ 1085 0x00, 0x00, 0x00, 0x00, 1086 0x00, 0x00, 0x00, 0x00, 1087}; 1088 1089static const bfd_byte 1090tilepro_long_plt_entry[PLT_ENTRY_SIZE] = 1091{ 1092 0x00, 0x50, 0x16, 0x70, 1093 0x0e, 0x00, 0x1a, 0x08, /* { lnk r28 } */ 1094 0x1c, 0x07, 0x00, 0xb0, 1095 0x8d, 0x03, 0x00, 0x20, /* { auli r28, r28, 0 ; auli r27, r28, 0 } */ 1096 0x1c, 0x07, 0x00, 0xa0, 1097 0x6d, 0x03, 0x00, 0x18, /* { addli r28, r28, 0 ; addli r27, r27, 0 } */ 1098 0xdd, 0x0f, 0x00, 0x30, 1099 0x8e, 0x73, 0x0b, 0x40, /* { auli r29, zero, 0 ; lw r28, r28 } */ 1100 0xff, 0xaf, 0x10, 0x50, 1101 0x80, 0x03, 0x18, 0x08, /* { info 10 ; jr r28 } */ 1102}; 1103 1104static bfd_vma 1105tilepro_ha16(bfd_vma vma) 1106{ 1107 return ((vma >> 16) + ((vma >> 15) & 1)) & 0xffff; 1108} 1109 1110static int 1111tilepro_plt_entry_build (asection *splt, asection *sgotplt, bfd_vma offset, 1112 bfd_vma *r_offset) 1113{ 1114 int plt_index = (offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE; 1115 int got_offset = plt_index * GOT_ENTRY_SIZE + GOTPLT_HEADER_SIZE; 1116 tilepro_bundle_bits *pc; 1117 1118 /* Compute the distance from the got entry to the lnk. */ 1119 bfd_signed_vma dist_got_entry = sgotplt->output_section->vma 1120 + sgotplt->output_offset 1121 + got_offset 1122 - splt->output_section->vma 1123 - splt->output_offset 1124 - offset 1125 - TILEPRO_BUNDLE_SIZE_IN_BYTES; 1126 1127 /* Compute the distance to GOTPLT[0]. */ 1128 bfd_signed_vma dist_got0 = dist_got_entry - got_offset; 1129 1130 /* Check whether we can use the short plt entry with 16-bit offset. */ 1131 bfd_boolean short_plt_entry = 1132 (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000); 1133 1134 /* Copy the plt entry template. */ 1135 memcpy (splt->contents + offset, 1136 short_plt_entry ? tilepro_short_plt_entry : tilepro_long_plt_entry, 1137 PLT_ENTRY_SIZE); 1138 1139 /* Write the immediate offsets. */ 1140 pc = (tilepro_bundle_bits *)(splt->contents + offset); 1141 pc++; 1142 1143 if (!short_plt_entry) 1144 { 1145 /* { auli r28, r28, &GOTPLT[MY_GOT_INDEX] ; auli r27, r28, &GOTPLT[0] } */ 1146 *pc++ |= create_Imm16_X0 (tilepro_ha16 (dist_got_entry)) 1147 | create_Imm16_X1 (tilepro_ha16 (dist_got0)); 1148 } 1149 1150 /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; addli r27, r28, &GOTPLT[0] } or 1151 { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; addli r27, r27, &GOTPLT[0] } */ 1152 *pc++ |= create_Imm16_X0 (dist_got_entry) 1153 | create_Imm16_X1 (dist_got0); 1154 1155 /* { auli r29, zero, MY_PLT_INDEX ; lw r28, r28 } */ 1156 *pc |= create_Imm16_X0 (plt_index); 1157 1158 /* Set the relocation offset. */ 1159 *r_offset = got_offset; 1160 1161 return plt_index; 1162} 1163 1164#define TILEPRO_ELF_RELA_BYTES (sizeof(Elf32_External_Rela)) 1165 1166 1167/* Create an entry in an TILEPro ELF linker hash table. */ 1168 1169static struct bfd_hash_entry * 1170link_hash_newfunc (struct bfd_hash_entry *entry, 1171 struct bfd_hash_table *table, const char *string) 1172{ 1173 /* Allocate the structure if it has not already been allocated by a 1174 subclass. */ 1175 if (entry == NULL) 1176 { 1177 entry = 1178 bfd_hash_allocate (table, 1179 sizeof (struct tilepro_elf_link_hash_entry)); 1180 if (entry == NULL) 1181 return entry; 1182 } 1183 1184 /* Call the allocation method of the superclass. */ 1185 entry = _bfd_elf_link_hash_newfunc (entry, table, string); 1186 if (entry != NULL) 1187 { 1188 struct tilepro_elf_link_hash_entry *eh; 1189 1190 eh = (struct tilepro_elf_link_hash_entry *) entry; 1191 eh->dyn_relocs = NULL; 1192 eh->tls_type = GOT_UNKNOWN; 1193 } 1194 1195 return entry; 1196} 1197 1198/* Create a TILEPRO ELF linker hash table. */ 1199 1200static struct bfd_link_hash_table * 1201tilepro_elf_link_hash_table_create (bfd *abfd) 1202{ 1203 struct tilepro_elf_link_hash_table *ret; 1204 bfd_size_type amt = sizeof (struct tilepro_elf_link_hash_table); 1205 1206 ret = (struct tilepro_elf_link_hash_table *) bfd_zmalloc (amt); 1207 if (ret == NULL) 1208 return NULL; 1209 1210 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, 1211 sizeof (struct tilepro_elf_link_hash_entry), 1212 TILEPRO_ELF_DATA)) 1213 { 1214 free (ret); 1215 return NULL; 1216 } 1217 1218 return &ret->elf.root; 1219} 1220 1221/* Create the .got section. */ 1222 1223static bfd_boolean 1224tilepro_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) 1225{ 1226 flagword flags; 1227 asection *s, *s_got; 1228 struct elf_link_hash_entry *h; 1229 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 1230 struct elf_link_hash_table *htab = elf_hash_table (info); 1231 1232 /* This function may be called more than once. */ 1233 if (htab->sgot != NULL) 1234 return TRUE; 1235 1236 flags = bed->dynamic_sec_flags; 1237 1238 s = bfd_make_section_with_flags (abfd, 1239 (bed->rela_plts_and_copies_p 1240 ? ".rela.got" : ".rel.got"), 1241 (bed->dynamic_sec_flags 1242 | SEC_READONLY)); 1243 if (s == NULL 1244 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 1245 return FALSE; 1246 htab->srelgot = s; 1247 1248 s = s_got = bfd_make_section_with_flags (abfd, ".got", flags); 1249 if (s == NULL 1250 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 1251 return FALSE; 1252 htab->sgot = s; 1253 1254 /* The first bit of the global offset table is the header. */ 1255 s->size += bed->got_header_size; 1256 1257 if (bed->want_got_plt) 1258 { 1259 s = bfd_make_section_with_flags (abfd, ".got.plt", flags); 1260 if (s == NULL 1261 || !bfd_set_section_alignment (abfd, s, 1262 bed->s->log_file_align)) 1263 return FALSE; 1264 htab->sgotplt = s; 1265 1266 /* Reserve room for the header. */ 1267 s->size += GOTPLT_HEADER_SIZE; 1268 } 1269 1270 if (bed->want_got_sym) 1271 { 1272 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got 1273 section. We don't do this in the linker script because we don't want 1274 to define the symbol if we are not creating a global offset 1275 table. */ 1276 h = _bfd_elf_define_linkage_sym (abfd, info, s_got, 1277 "_GLOBAL_OFFSET_TABLE_"); 1278 elf_hash_table (info)->hgot = h; 1279 if (h == NULL) 1280 return FALSE; 1281 } 1282 1283 return TRUE; 1284} 1285 1286/* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and 1287 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our 1288 hash table. */ 1289 1290static bfd_boolean 1291tilepro_elf_create_dynamic_sections (bfd *dynobj, 1292 struct bfd_link_info *info) 1293{ 1294 if (!tilepro_elf_create_got_section (dynobj, info)) 1295 return FALSE; 1296 1297 return _bfd_elf_create_dynamic_sections (dynobj, info); 1298} 1299 1300/* Copy the extra info we tack onto an elf_link_hash_entry. */ 1301 1302static void 1303tilepro_elf_copy_indirect_symbol (struct bfd_link_info *info, 1304 struct elf_link_hash_entry *dir, 1305 struct elf_link_hash_entry *ind) 1306{ 1307 struct tilepro_elf_link_hash_entry *edir, *eind; 1308 1309 edir = (struct tilepro_elf_link_hash_entry *) dir; 1310 eind = (struct tilepro_elf_link_hash_entry *) ind; 1311 1312 if (eind->dyn_relocs != NULL) 1313 { 1314 if (edir->dyn_relocs != NULL) 1315 { 1316 struct tilepro_elf_dyn_relocs **pp; 1317 struct tilepro_elf_dyn_relocs *p; 1318 1319 /* Add reloc counts against the indirect sym to the direct sym 1320 list. Merge any entries against the same section. */ 1321 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) 1322 { 1323 struct tilepro_elf_dyn_relocs *q; 1324 1325 for (q = edir->dyn_relocs; q != NULL; q = q->next) 1326 if (q->sec == p->sec) 1327 { 1328 q->pc_count += p->pc_count; 1329 q->count += p->count; 1330 *pp = p->next; 1331 break; 1332 } 1333 if (q == NULL) 1334 pp = &p->next; 1335 } 1336 *pp = edir->dyn_relocs; 1337 } 1338 1339 edir->dyn_relocs = eind->dyn_relocs; 1340 eind->dyn_relocs = NULL; 1341 } 1342 1343 if (ind->root.type == bfd_link_hash_indirect 1344 && dir->got.refcount <= 0) 1345 { 1346 edir->tls_type = eind->tls_type; 1347 eind->tls_type = GOT_UNKNOWN; 1348 } 1349 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 1350} 1351 1352static int 1353tilepro_tls_translate_to_le (int r_type) 1354{ 1355 switch (r_type) 1356 { 1357 case R_TILEPRO_IMM16_X0_TLS_GD: 1358 case R_TILEPRO_IMM16_X0_TLS_IE: 1359 return R_TILEPRO_IMM16_X0_TLS_LE; 1360 1361 case R_TILEPRO_IMM16_X1_TLS_GD: 1362 case R_TILEPRO_IMM16_X1_TLS_IE: 1363 return R_TILEPRO_IMM16_X1_TLS_LE; 1364 1365 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 1366 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 1367 return R_TILEPRO_IMM16_X0_TLS_LE_LO; 1368 1369 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 1370 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 1371 return R_TILEPRO_IMM16_X1_TLS_LE_LO; 1372 1373 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 1374 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 1375 return R_TILEPRO_IMM16_X0_TLS_LE_HI; 1376 1377 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 1378 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 1379 return R_TILEPRO_IMM16_X1_TLS_LE_HI; 1380 1381 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 1382 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 1383 return R_TILEPRO_IMM16_X0_TLS_LE_HA; 1384 1385 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 1386 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 1387 return R_TILEPRO_IMM16_X1_TLS_LE_HA; 1388 } 1389 return r_type; 1390} 1391 1392static int 1393tilepro_tls_translate_to_ie (int r_type) 1394{ 1395 switch (r_type) 1396 { 1397 case R_TILEPRO_IMM16_X0_TLS_GD: 1398 case R_TILEPRO_IMM16_X0_TLS_IE: 1399 return R_TILEPRO_IMM16_X0_TLS_IE; 1400 1401 case R_TILEPRO_IMM16_X1_TLS_GD: 1402 case R_TILEPRO_IMM16_X1_TLS_IE: 1403 return R_TILEPRO_IMM16_X1_TLS_IE; 1404 1405 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 1406 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 1407 return R_TILEPRO_IMM16_X0_TLS_IE_LO; 1408 1409 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 1410 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 1411 return R_TILEPRO_IMM16_X1_TLS_IE_LO; 1412 1413 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 1414 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 1415 return R_TILEPRO_IMM16_X0_TLS_IE_HI; 1416 1417 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 1418 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 1419 return R_TILEPRO_IMM16_X1_TLS_IE_HI; 1420 1421 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 1422 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 1423 return R_TILEPRO_IMM16_X0_TLS_IE_HA; 1424 1425 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 1426 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 1427 return R_TILEPRO_IMM16_X1_TLS_IE_HA; 1428 } 1429 return r_type; 1430} 1431 1432static int 1433tilepro_elf_tls_transition (struct bfd_link_info *info, int r_type, 1434 int is_local) 1435{ 1436 if (bfd_link_pic (info)) 1437 return r_type; 1438 1439 if (is_local) 1440 return tilepro_tls_translate_to_le (r_type); 1441 else 1442 return tilepro_tls_translate_to_ie (r_type); 1443} 1444 1445/* Look through the relocs for a section during the first phase, and 1446 allocate space in the global offset table or procedure linkage 1447 table. */ 1448 1449static bfd_boolean 1450tilepro_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, 1451 asection *sec, const Elf_Internal_Rela *relocs) 1452{ 1453 struct tilepro_elf_link_hash_table *htab; 1454 Elf_Internal_Shdr *symtab_hdr; 1455 struct elf_link_hash_entry **sym_hashes; 1456 const Elf_Internal_Rela *rel; 1457 const Elf_Internal_Rela *rel_end; 1458 asection *sreloc; 1459 int num_relocs; 1460 1461 if (bfd_link_relocatable (info)) 1462 return TRUE; 1463 1464 htab = tilepro_elf_hash_table (info); 1465 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 1466 sym_hashes = elf_sym_hashes (abfd); 1467 1468 sreloc = NULL; 1469 1470 num_relocs = sec->reloc_count; 1471 1472 BFD_ASSERT (is_tilepro_elf (abfd) || num_relocs == 0); 1473 1474 if (htab->elf.dynobj == NULL) 1475 htab->elf.dynobj = abfd; 1476 1477 rel_end = relocs + num_relocs; 1478 for (rel = relocs; rel < rel_end; rel++) 1479 { 1480 unsigned int r_type; 1481 unsigned long r_symndx; 1482 struct elf_link_hash_entry *h; 1483 int tls_type; 1484 1485 r_symndx = ELF32_R_SYM (rel->r_info); 1486 r_type = ELF32_R_TYPE (rel->r_info); 1487 1488 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) 1489 { 1490 /* xgettext:c-format */ 1491 _bfd_error_handler (_("%B: bad symbol index: %d"), 1492 abfd, r_symndx); 1493 return FALSE; 1494 } 1495 1496 if (r_symndx < symtab_hdr->sh_info) 1497 h = NULL; 1498 else 1499 { 1500 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 1501 while (h->root.type == bfd_link_hash_indirect 1502 || h->root.type == bfd_link_hash_warning) 1503 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1504 1505 /* PR15323, ref flags aren't set for references in the same 1506 object. */ 1507 h->root.non_ir_ref = 1; 1508 } 1509 1510 r_type = tilepro_elf_tls_transition (info, r_type, h == NULL); 1511 switch (r_type) 1512 { 1513 case R_TILEPRO_IMM16_X0_TLS_LE: 1514 case R_TILEPRO_IMM16_X1_TLS_LE: 1515 case R_TILEPRO_IMM16_X0_TLS_LE_LO: 1516 case R_TILEPRO_IMM16_X1_TLS_LE_LO: 1517 case R_TILEPRO_IMM16_X0_TLS_LE_HI: 1518 case R_TILEPRO_IMM16_X1_TLS_LE_HI: 1519 case R_TILEPRO_IMM16_X0_TLS_LE_HA: 1520 case R_TILEPRO_IMM16_X1_TLS_LE_HA: 1521 if (bfd_link_pic (info)) 1522 goto r_tilepro_plt32; 1523 break; 1524 1525 case R_TILEPRO_IMM16_X0_TLS_GD: 1526 case R_TILEPRO_IMM16_X1_TLS_GD: 1527 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 1528 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 1529 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 1530 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 1531 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 1532 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 1533 BFD_ASSERT (bfd_link_pic (info)); 1534 tls_type = GOT_TLS_GD; 1535 goto have_got_reference; 1536 1537 case R_TILEPRO_IMM16_X0_TLS_IE: 1538 case R_TILEPRO_IMM16_X1_TLS_IE: 1539 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 1540 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 1541 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 1542 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 1543 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 1544 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 1545 tls_type = GOT_TLS_IE; 1546 if (bfd_link_pic (info)) 1547 info->flags |= DF_STATIC_TLS; 1548 goto have_got_reference; 1549 1550 case R_TILEPRO_IMM16_X0_GOT: 1551 case R_TILEPRO_IMM16_X1_GOT: 1552 case R_TILEPRO_IMM16_X0_GOT_LO: 1553 case R_TILEPRO_IMM16_X1_GOT_LO: 1554 case R_TILEPRO_IMM16_X0_GOT_HI: 1555 case R_TILEPRO_IMM16_X1_GOT_HI: 1556 case R_TILEPRO_IMM16_X0_GOT_HA: 1557 case R_TILEPRO_IMM16_X1_GOT_HA: 1558 tls_type = GOT_NORMAL; 1559 /* Fall Through */ 1560 1561 have_got_reference: 1562 /* This symbol requires a global offset table entry. */ 1563 { 1564 int old_tls_type; 1565 1566 if (h != NULL) 1567 { 1568 h->got.refcount += 1; 1569 old_tls_type = tilepro_elf_hash_entry(h)->tls_type; 1570 } 1571 else 1572 { 1573 bfd_signed_vma *local_got_refcounts; 1574 1575 /* This is a global offset table entry for a local symbol. */ 1576 local_got_refcounts = elf_local_got_refcounts (abfd); 1577 if (local_got_refcounts == NULL) 1578 { 1579 bfd_size_type size; 1580 1581 size = symtab_hdr->sh_info; 1582 size *= (sizeof (bfd_signed_vma) + sizeof(char)); 1583 local_got_refcounts = ((bfd_signed_vma *) 1584 bfd_zalloc (abfd, size)); 1585 if (local_got_refcounts == NULL) 1586 return FALSE; 1587 elf_local_got_refcounts (abfd) = local_got_refcounts; 1588 _bfd_tilepro_elf_local_got_tls_type (abfd) 1589 = (char *) (local_got_refcounts + symtab_hdr->sh_info); 1590 } 1591 local_got_refcounts[r_symndx] += 1; 1592 old_tls_type = 1593 _bfd_tilepro_elf_local_got_tls_type (abfd) [r_symndx]; 1594 } 1595 1596 /* If a TLS symbol is accessed using IE at least once, 1597 there is no point to use dynamic model for it. */ 1598 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN 1599 && (old_tls_type != GOT_TLS_GD 1600 || tls_type != GOT_TLS_IE)) 1601 { 1602 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD) 1603 tls_type = old_tls_type; 1604 else 1605 { 1606 _bfd_error_handler 1607 /* xgettext:c-format */ 1608 (_("%B: `%s' accessed both as normal and thread local symbol"), 1609 abfd, h ? h->root.root.string : "<local>"); 1610 return FALSE; 1611 } 1612 } 1613 1614 if (old_tls_type != tls_type) 1615 { 1616 if (h != NULL) 1617 tilepro_elf_hash_entry (h)->tls_type = tls_type; 1618 else 1619 _bfd_tilepro_elf_local_got_tls_type (abfd) [r_symndx] = 1620 tls_type; 1621 } 1622 } 1623 1624 if (htab->elf.sgot == NULL) 1625 { 1626 if (!tilepro_elf_create_got_section (htab->elf.dynobj, info)) 1627 return FALSE; 1628 } 1629 break; 1630 1631 case R_TILEPRO_TLS_GD_CALL: 1632 if (bfd_link_pic (info)) 1633 { 1634 /* These are basically R_TILEPRO_JOFFLONG_X1_PLT relocs 1635 against __tls_get_addr. */ 1636 struct bfd_link_hash_entry *bh = NULL; 1637 if (! _bfd_generic_link_add_one_symbol (info, abfd, 1638 "__tls_get_addr", 0, 1639 bfd_und_section_ptr, 0, 1640 NULL, FALSE, FALSE, 1641 &bh)) 1642 return FALSE; 1643 h = (struct elf_link_hash_entry *) bh; 1644 } 1645 else 1646 break; 1647 /* Fall through */ 1648 1649 case R_TILEPRO_JOFFLONG_X1_PLT: 1650 /* This symbol requires a procedure linkage table entry. We 1651 actually build the entry in adjust_dynamic_symbol, 1652 because this might be a case of linking PIC code without 1653 linking in any dynamic objects, in which case we don't 1654 need to generate a procedure linkage table after all. */ 1655 1656 if (h != NULL) 1657 { 1658 h->needs_plt = 1; 1659 h->plt.refcount += 1; 1660 } 1661 break; 1662 1663 case R_TILEPRO_32_PCREL: 1664 case R_TILEPRO_16_PCREL: 1665 case R_TILEPRO_8_PCREL: 1666 case R_TILEPRO_IMM16_X0_PCREL: 1667 case R_TILEPRO_IMM16_X1_PCREL: 1668 case R_TILEPRO_IMM16_X0_LO_PCREL: 1669 case R_TILEPRO_IMM16_X1_LO_PCREL: 1670 case R_TILEPRO_IMM16_X0_HI_PCREL: 1671 case R_TILEPRO_IMM16_X1_HI_PCREL: 1672 case R_TILEPRO_IMM16_X0_HA_PCREL: 1673 case R_TILEPRO_IMM16_X1_HA_PCREL: 1674 if (h != NULL) 1675 h->non_got_ref = 1; 1676 1677 if (h != NULL 1678 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 1679 break; 1680 /* Fall through. */ 1681 1682 case R_TILEPRO_32: 1683 case R_TILEPRO_16: 1684 case R_TILEPRO_8: 1685 case R_TILEPRO_LO16: 1686 case R_TILEPRO_HI16: 1687 case R_TILEPRO_HA16: 1688 case R_TILEPRO_COPY: 1689 case R_TILEPRO_GLOB_DAT: 1690 case R_TILEPRO_JMP_SLOT: 1691 case R_TILEPRO_RELATIVE: 1692 case R_TILEPRO_BROFF_X1: 1693 case R_TILEPRO_JOFFLONG_X1: 1694 case R_TILEPRO_IMM8_X0: 1695 case R_TILEPRO_IMM8_Y0: 1696 case R_TILEPRO_IMM8_X1: 1697 case R_TILEPRO_IMM8_Y1: 1698 case R_TILEPRO_DEST_IMM8_X1: 1699 case R_TILEPRO_MT_IMM15_X1: 1700 case R_TILEPRO_MF_IMM15_X1: 1701 case R_TILEPRO_IMM16_X0: 1702 case R_TILEPRO_IMM16_X1: 1703 case R_TILEPRO_IMM16_X0_LO: 1704 case R_TILEPRO_IMM16_X1_LO: 1705 case R_TILEPRO_IMM16_X0_HI: 1706 case R_TILEPRO_IMM16_X1_HI: 1707 case R_TILEPRO_IMM16_X0_HA: 1708 case R_TILEPRO_IMM16_X1_HA: 1709 case R_TILEPRO_MMSTART_X0: 1710 case R_TILEPRO_MMEND_X0: 1711 case R_TILEPRO_MMSTART_X1: 1712 case R_TILEPRO_MMEND_X1: 1713 case R_TILEPRO_SHAMT_X0: 1714 case R_TILEPRO_SHAMT_X1: 1715 case R_TILEPRO_SHAMT_Y0: 1716 case R_TILEPRO_SHAMT_Y1: 1717 if (h != NULL) 1718 h->non_got_ref = 1; 1719 1720 r_tilepro_plt32: 1721 if (h != NULL && !bfd_link_pic (info)) 1722 { 1723 /* We may need a .plt entry if the function this reloc 1724 refers to is in a shared lib. */ 1725 h->plt.refcount += 1; 1726 } 1727 1728 /* If we are creating a shared library, and this is a reloc 1729 against a global symbol, or a non PC relative reloc 1730 against a local symbol, then we need to copy the reloc 1731 into the shared library. However, if we are linking with 1732 -Bsymbolic, we do not need to copy a reloc against a 1733 global symbol which is defined in an object we are 1734 including in the link (i.e., DEF_REGULAR is set). At 1735 this point we have not seen all the input files, so it is 1736 possible that DEF_REGULAR is not set now but will be set 1737 later (it is never cleared). In case of a weak definition, 1738 DEF_REGULAR may be cleared later by a strong definition in 1739 a shared library. We account for that possibility below by 1740 storing information in the relocs_copied field of the hash 1741 table entry. A similar situation occurs when creating 1742 shared libraries and symbol visibility changes render the 1743 symbol local. 1744 1745 If on the other hand, we are creating an executable, we 1746 may need to keep relocations for symbols satisfied by a 1747 dynamic library if we manage to avoid copy relocs for the 1748 symbol. */ 1749 if ((bfd_link_pic (info) 1750 && (sec->flags & SEC_ALLOC) != 0 1751 && (! tilepro_elf_howto_table[r_type].pc_relative 1752 || (h != NULL 1753 && (! info->symbolic 1754 || h->root.type == bfd_link_hash_defweak 1755 || !h->def_regular)))) 1756 || (!bfd_link_pic (info) 1757 && (sec->flags & SEC_ALLOC) != 0 1758 && h != NULL 1759 && (h->root.type == bfd_link_hash_defweak 1760 || !h->def_regular))) 1761 { 1762 struct tilepro_elf_dyn_relocs *p; 1763 struct tilepro_elf_dyn_relocs **head; 1764 1765 /* When creating a shared object, we must copy these 1766 relocs into the output file. We create a reloc 1767 section in dynobj and make room for the reloc. */ 1768 if (sreloc == NULL) 1769 { 1770 sreloc = _bfd_elf_make_dynamic_reloc_section 1771 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE); 1772 1773 if (sreloc == NULL) 1774 return FALSE; 1775 } 1776 1777 /* If this is a global symbol, we count the number of 1778 relocations we need for this symbol. */ 1779 if (h != NULL) 1780 head = 1781 &((struct tilepro_elf_link_hash_entry *) h)->dyn_relocs; 1782 else 1783 { 1784 /* Track dynamic relocs needed for local syms too. 1785 We really need local syms available to do this 1786 easily. Oh well. */ 1787 1788 asection *s; 1789 void *vpp; 1790 Elf_Internal_Sym *isym; 1791 1792 isym = bfd_sym_from_r_symndx (&htab->sym_cache, 1793 abfd, r_symndx); 1794 if (isym == NULL) 1795 return FALSE; 1796 1797 s = bfd_section_from_elf_index (abfd, isym->st_shndx); 1798 if (s == NULL) 1799 s = sec; 1800 1801 vpp = &elf_section_data (s)->local_dynrel; 1802 head = (struct tilepro_elf_dyn_relocs **) vpp; 1803 } 1804 1805 p = *head; 1806 if (p == NULL || p->sec != sec) 1807 { 1808 bfd_size_type amt = sizeof *p; 1809 p = ((struct tilepro_elf_dyn_relocs *) 1810 bfd_alloc (htab->elf.dynobj, amt)); 1811 if (p == NULL) 1812 return FALSE; 1813 p->next = *head; 1814 *head = p; 1815 p->sec = sec; 1816 p->count = 0; 1817 p->pc_count = 0; 1818 } 1819 1820 p->count += 1; 1821 if (tilepro_elf_howto_table[r_type].pc_relative) 1822 p->pc_count += 1; 1823 } 1824 1825 break; 1826 1827 case R_TILEPRO_GNU_VTINHERIT: 1828 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 1829 return FALSE; 1830 break; 1831 1832 case R_TILEPRO_GNU_VTENTRY: 1833 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 1834 return FALSE; 1835 break; 1836 1837 default: 1838 break; 1839 } 1840 } 1841 1842 return TRUE; 1843} 1844 1845 1846static asection * 1847tilepro_elf_gc_mark_hook (asection *sec, 1848 struct bfd_link_info *info, 1849 Elf_Internal_Rela *rel, 1850 struct elf_link_hash_entry *h, 1851 Elf_Internal_Sym *sym) 1852{ 1853 if (h != NULL) 1854 { 1855 switch (ELF32_R_TYPE (rel->r_info)) 1856 { 1857 case R_TILEPRO_GNU_VTINHERIT: 1858 case R_TILEPRO_GNU_VTENTRY: 1859 return NULL; 1860 } 1861 } 1862 1863 /* FIXME: The test here, in check_relocs and in relocate_section 1864 dealing with TLS optimization, ought to be !bfd_link_executable (info). */ 1865 if (bfd_link_pic (info)) 1866 { 1867 switch (ELF32_R_TYPE (rel->r_info)) 1868 { 1869 case R_TILEPRO_TLS_GD_CALL: 1870 /* This reloc implicitly references __tls_get_addr. We know 1871 another reloc will reference the same symbol as the one 1872 on this reloc, so the real symbol and section will be 1873 gc marked when processing the other reloc. That lets 1874 us handle __tls_get_addr here. */ 1875 h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr", 1876 FALSE, FALSE, TRUE); 1877 BFD_ASSERT (h != NULL); 1878 h->mark = 1; 1879 if (h->u.weakdef != NULL) 1880 h->u.weakdef->mark = 1; 1881 sym = NULL; 1882 } 1883 } 1884 1885 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 1886} 1887 1888/* Update the got entry reference counts for the section being removed. */ 1889static bfd_boolean 1890tilepro_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, 1891 asection *sec, const Elf_Internal_Rela *relocs) 1892{ 1893 struct tilepro_elf_link_hash_table *htab; 1894 Elf_Internal_Shdr *symtab_hdr; 1895 struct elf_link_hash_entry **sym_hashes; 1896 bfd_signed_vma *local_got_refcounts; 1897 const Elf_Internal_Rela *rel, *relend; 1898 1899 if (bfd_link_relocatable (info)) 1900 return TRUE; 1901 1902 BFD_ASSERT (is_tilepro_elf (abfd) || sec->reloc_count == 0); 1903 1904 elf_section_data (sec)->local_dynrel = NULL; 1905 1906 htab = tilepro_elf_hash_table (info); 1907 BFD_ASSERT (htab != NULL); 1908 symtab_hdr = &elf_symtab_hdr (abfd); 1909 sym_hashes = elf_sym_hashes (abfd); 1910 local_got_refcounts = elf_local_got_refcounts (abfd); 1911 1912 relend = relocs + sec->reloc_count; 1913 for (rel = relocs; rel < relend; rel++) 1914 { 1915 unsigned long r_symndx; 1916 unsigned int r_type; 1917 struct elf_link_hash_entry *h = NULL; 1918 1919 r_symndx = ELF32_R_SYM (rel->r_info); 1920 if (r_symndx >= symtab_hdr->sh_info) 1921 { 1922 struct tilepro_elf_link_hash_entry *eh; 1923 struct tilepro_elf_dyn_relocs **pp; 1924 struct tilepro_elf_dyn_relocs *p; 1925 1926 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 1927 while (h->root.type == bfd_link_hash_indirect 1928 || h->root.type == bfd_link_hash_warning) 1929 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1930 eh = (struct tilepro_elf_link_hash_entry *) h; 1931 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) 1932 if (p->sec == sec) 1933 { 1934 /* Everything must go for SEC. */ 1935 *pp = p->next; 1936 break; 1937 } 1938 } 1939 1940 r_type = ELF32_R_TYPE (rel->r_info); 1941 r_type = tilepro_elf_tls_transition (info, r_type, h != NULL); 1942 switch (r_type) 1943 { 1944 case R_TILEPRO_IMM16_X0_GOT: 1945 case R_TILEPRO_IMM16_X1_GOT: 1946 case R_TILEPRO_IMM16_X0_GOT_LO: 1947 case R_TILEPRO_IMM16_X1_GOT_LO: 1948 case R_TILEPRO_IMM16_X0_GOT_HI: 1949 case R_TILEPRO_IMM16_X1_GOT_HI: 1950 case R_TILEPRO_IMM16_X0_GOT_HA: 1951 case R_TILEPRO_IMM16_X1_GOT_HA: 1952 case R_TILEPRO_IMM16_X0_TLS_GD: 1953 case R_TILEPRO_IMM16_X1_TLS_GD: 1954 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 1955 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 1956 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 1957 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 1958 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 1959 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 1960 case R_TILEPRO_IMM16_X0_TLS_IE: 1961 case R_TILEPRO_IMM16_X1_TLS_IE: 1962 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 1963 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 1964 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 1965 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 1966 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 1967 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 1968 if (h != NULL) 1969 { 1970 if (h->got.refcount > 0) 1971 h->got.refcount--; 1972 } 1973 else 1974 { 1975 if (local_got_refcounts && 1976 local_got_refcounts[r_symndx] > 0) 1977 local_got_refcounts[r_symndx]--; 1978 } 1979 break; 1980 1981 case R_TILEPRO_32_PCREL: 1982 case R_TILEPRO_16_PCREL: 1983 case R_TILEPRO_8_PCREL: 1984 case R_TILEPRO_IMM16_X0_PCREL: 1985 case R_TILEPRO_IMM16_X1_PCREL: 1986 case R_TILEPRO_IMM16_X0_LO_PCREL: 1987 case R_TILEPRO_IMM16_X1_LO_PCREL: 1988 case R_TILEPRO_IMM16_X0_HI_PCREL: 1989 case R_TILEPRO_IMM16_X1_HI_PCREL: 1990 case R_TILEPRO_IMM16_X0_HA_PCREL: 1991 case R_TILEPRO_IMM16_X1_HA_PCREL: 1992 if (h != NULL 1993 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 1994 break; 1995 /* Fall through. */ 1996 1997 case R_TILEPRO_32: 1998 case R_TILEPRO_16: 1999 case R_TILEPRO_8: 2000 case R_TILEPRO_LO16: 2001 case R_TILEPRO_HI16: 2002 case R_TILEPRO_HA16: 2003 case R_TILEPRO_COPY: 2004 case R_TILEPRO_GLOB_DAT: 2005 case R_TILEPRO_JMP_SLOT: 2006 case R_TILEPRO_RELATIVE: 2007 case R_TILEPRO_BROFF_X1: 2008 case R_TILEPRO_JOFFLONG_X1: 2009 case R_TILEPRO_IMM8_X0: 2010 case R_TILEPRO_IMM8_Y0: 2011 case R_TILEPRO_IMM8_X1: 2012 case R_TILEPRO_IMM8_Y1: 2013 case R_TILEPRO_DEST_IMM8_X1: 2014 case R_TILEPRO_MT_IMM15_X1: 2015 case R_TILEPRO_MF_IMM15_X1: 2016 case R_TILEPRO_IMM16_X0: 2017 case R_TILEPRO_IMM16_X1: 2018 case R_TILEPRO_IMM16_X0_LO: 2019 case R_TILEPRO_IMM16_X1_LO: 2020 case R_TILEPRO_IMM16_X0_HI: 2021 case R_TILEPRO_IMM16_X1_HI: 2022 case R_TILEPRO_IMM16_X0_HA: 2023 case R_TILEPRO_IMM16_X1_HA: 2024 case R_TILEPRO_MMSTART_X0: 2025 case R_TILEPRO_MMEND_X0: 2026 case R_TILEPRO_MMSTART_X1: 2027 case R_TILEPRO_MMEND_X1: 2028 case R_TILEPRO_SHAMT_X0: 2029 case R_TILEPRO_SHAMT_X1: 2030 case R_TILEPRO_SHAMT_Y0: 2031 case R_TILEPRO_SHAMT_Y1: 2032 if (bfd_link_pic (info)) 2033 break; 2034 /* Fall through. */ 2035 2036 case R_TILEPRO_JOFFLONG_X1_PLT: 2037 if (h != NULL) 2038 { 2039 if (h->plt.refcount > 0) 2040 h->plt.refcount--; 2041 } 2042 break; 2043 2044 default: 2045 break; 2046 } 2047 } 2048 2049 return TRUE; 2050} 2051 2052/* Adjust a symbol defined by a dynamic object and referenced by a 2053 regular object. The current definition is in some section of the 2054 dynamic object, but we're not including those sections. We have to 2055 change the definition to something the rest of the link can 2056 understand. */ 2057 2058static bfd_boolean 2059tilepro_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 2060 struct elf_link_hash_entry *h) 2061{ 2062 struct tilepro_elf_link_hash_table *htab; 2063 struct tilepro_elf_link_hash_entry * eh; 2064 struct tilepro_elf_dyn_relocs *p; 2065 asection *s, *srel; 2066 2067 htab = tilepro_elf_hash_table (info); 2068 BFD_ASSERT (htab != NULL); 2069 2070 /* Make sure we know what is going on here. */ 2071 BFD_ASSERT (htab->elf.dynobj != NULL 2072 && (h->needs_plt 2073 || h->u.weakdef != NULL 2074 || (h->def_dynamic 2075 && h->ref_regular 2076 && !h->def_regular))); 2077 2078 /* If this is a function, put it in the procedure linkage table. We 2079 will fill in the contents of the procedure linkage table later 2080 (although we could actually do it here). */ 2081 if (h->type == STT_FUNC || h->needs_plt) 2082 { 2083 if (h->plt.refcount <= 0 2084 || SYMBOL_CALLS_LOCAL (info, h) 2085 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT 2086 && h->root.type == bfd_link_hash_undefweak)) 2087 { 2088 /* This case can occur if we saw a R_TILEPRO_JOFFLONG_X1_PLT 2089 reloc in an input file, but the symbol was never referred 2090 to by a dynamic object, or if all references were garbage 2091 collected. In such a case, we don't actually need to build 2092 a procedure linkage table, and we can just do a 2093 R_TILEPRO_JOFFLONG_X1 relocation instead. */ 2094 h->plt.offset = (bfd_vma) -1; 2095 h->needs_plt = 0; 2096 } 2097 2098 return TRUE; 2099 } 2100 else 2101 h->plt.offset = (bfd_vma) -1; 2102 2103 /* If this is a weak symbol, and there is a real definition, the 2104 processor independent code will have arranged for us to see the 2105 real definition first, and we can just use the same value. */ 2106 if (h->u.weakdef != NULL) 2107 { 2108 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 2109 || h->u.weakdef->root.type == bfd_link_hash_defweak); 2110 h->root.u.def.section = h->u.weakdef->root.u.def.section; 2111 h->root.u.def.value = h->u.weakdef->root.u.def.value; 2112 return TRUE; 2113 } 2114 2115 /* This is a reference to a symbol defined by a dynamic object which 2116 is not a function. */ 2117 2118 /* If we are creating a shared library, we must presume that the 2119 only references to the symbol are via the global offset table. 2120 For such cases we need not do anything here; the relocations will 2121 be handled correctly by relocate_section. */ 2122 if (bfd_link_pic (info)) 2123 return TRUE; 2124 2125 /* If there are no references to this symbol that do not use the 2126 GOT, we don't need to generate a copy reloc. */ 2127 if (!h->non_got_ref) 2128 return TRUE; 2129 2130 /* If -z nocopyreloc was given, we won't generate them either. */ 2131 if (info->nocopyreloc) 2132 { 2133 h->non_got_ref = 0; 2134 return TRUE; 2135 } 2136 2137 eh = (struct tilepro_elf_link_hash_entry *) h; 2138 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2139 { 2140 s = p->sec->output_section; 2141 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2142 break; 2143 } 2144 2145 /* If we didn't find any dynamic relocs in read-only sections, then 2146 we'll be keeping the dynamic relocs and avoiding the copy reloc. */ 2147 if (p == NULL) 2148 { 2149 h->non_got_ref = 0; 2150 return TRUE; 2151 } 2152 2153 /* We must allocate the symbol in our .dynbss section, which will 2154 become part of the .bss section of the executable. There will be 2155 an entry for this symbol in the .dynsym section. The dynamic 2156 object will contain position independent code, so all references 2157 from the dynamic object to this symbol will go through the global 2158 offset table. The dynamic linker will use the .dynsym entry to 2159 determine the address it must put in the global offset table, so 2160 both the dynamic object and the regular object will refer to the 2161 same memory location for the variable. */ 2162 2163 /* We must generate a R_TILEPRO_COPY reloc to tell the dynamic linker 2164 to copy the initial value out of the dynamic object and into the 2165 runtime process image. We need to remember the offset into the 2166 .rel.bss section we are going to use. */ 2167 if ((h->root.u.def.section->flags & SEC_READONLY) != 0) 2168 { 2169 s = htab->elf.sdynrelro; 2170 srel = htab->elf.sreldynrelro; 2171 } 2172 else 2173 { 2174 s = htab->elf.sdynbss; 2175 srel = htab->elf.srelbss; 2176 } 2177 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) 2178 { 2179 srel->size += TILEPRO_ELF_RELA_BYTES; 2180 h->needs_copy = 1; 2181 } 2182 2183 return _bfd_elf_adjust_dynamic_copy (info, h, s); 2184} 2185 2186/* Allocate space in .plt, .got and associated reloc sections for 2187 dynamic relocs. */ 2188 2189static bfd_boolean 2190allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) 2191{ 2192 struct bfd_link_info *info; 2193 struct tilepro_elf_link_hash_table *htab; 2194 struct tilepro_elf_link_hash_entry *eh; 2195 struct tilepro_elf_dyn_relocs *p; 2196 2197 if (h->root.type == bfd_link_hash_indirect) 2198 return TRUE; 2199 2200 info = (struct bfd_link_info *) inf; 2201 htab = tilepro_elf_hash_table (info); 2202 BFD_ASSERT (htab != NULL); 2203 2204 if (htab->elf.dynamic_sections_created 2205 && h->plt.refcount > 0) 2206 { 2207 /* Make sure this symbol is output as a dynamic symbol. 2208 Undefined weak syms won't yet be marked as dynamic. */ 2209 if (h->dynindx == -1 2210 && !h->forced_local) 2211 { 2212 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2213 return FALSE; 2214 } 2215 2216 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) 2217 { 2218 asection *s = htab->elf.splt; 2219 2220 /* Allocate room for the header. */ 2221 if (s->size == 0) 2222 { 2223 s->size = PLT_ENTRY_SIZE; 2224 } 2225 2226 h->plt.offset = s->size; 2227 2228 /* If this symbol is not defined in a regular file, and we are 2229 not generating a shared library, then set the symbol to this 2230 location in the .plt. This is required to make function 2231 pointers compare as equal between the normal executable and 2232 the shared library. */ 2233 if (! bfd_link_pic (info) 2234 && !h->def_regular) 2235 { 2236 h->root.u.def.section = s; 2237 h->root.u.def.value = h->plt.offset; 2238 } 2239 2240 /* Make room for this entry. */ 2241 s->size += PLT_ENTRY_SIZE; 2242 2243 /* We also need to make an entry in the .got.plt section. */ 2244 htab->elf.sgotplt->size += GOT_ENTRY_SIZE; 2245 2246 /* We also need to make an entry in the .rela.plt section. */ 2247 htab->elf.srelplt->size += TILEPRO_ELF_RELA_BYTES; 2248 } 2249 else 2250 { 2251 h->plt.offset = (bfd_vma) -1; 2252 h->needs_plt = 0; 2253 } 2254 } 2255 else 2256 { 2257 h->plt.offset = (bfd_vma) -1; 2258 h->needs_plt = 0; 2259 } 2260 2261 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE 2262 requiring no TLS entry. */ 2263 if (h->got.refcount > 0 2264 && !bfd_link_pic (info) 2265 && h->dynindx == -1 2266 && tilepro_elf_hash_entry(h)->tls_type == GOT_TLS_IE) 2267 h->got.offset = (bfd_vma) -1; 2268 else if (h->got.refcount > 0) 2269 { 2270 asection *s; 2271 bfd_boolean dyn; 2272 int tls_type = tilepro_elf_hash_entry(h)->tls_type; 2273 2274 /* Make sure this symbol is output as a dynamic symbol. 2275 Undefined weak syms won't yet be marked as dynamic. */ 2276 if (h->dynindx == -1 2277 && !h->forced_local) 2278 { 2279 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2280 return FALSE; 2281 } 2282 2283 s = htab->elf.sgot; 2284 h->got.offset = s->size; 2285 s->size += TILEPRO_BYTES_PER_WORD; 2286 /* R_TILEPRO_IMM16_Xn_TLS_GD entries need 2 consecutive GOT slots. */ 2287 if (tls_type == GOT_TLS_GD) 2288 s->size += TILEPRO_BYTES_PER_WORD; 2289 dyn = htab->elf.dynamic_sections_created; 2290 /* R_TILEPRO_IMM16_Xn_TLS_IE_xxx needs one dynamic relocation, 2291 R_TILEPRO_IMM16_Xn_TLS_GD_xxx needs two if local symbol and two if 2292 global. */ 2293 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE) 2294 htab->elf.srelgot->size += 2 * TILEPRO_ELF_RELA_BYTES; 2295 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2296 bfd_link_pic (info), 2297 h)) 2298 htab->elf.srelgot->size += TILEPRO_ELF_RELA_BYTES; 2299 } 2300 else 2301 h->got.offset = (bfd_vma) -1; 2302 2303 eh = (struct tilepro_elf_link_hash_entry *) h; 2304 if (eh->dyn_relocs == NULL) 2305 return TRUE; 2306 2307 /* In the shared -Bsymbolic case, discard space allocated for 2308 dynamic pc-relative relocs against symbols which turn out to be 2309 defined in regular objects. For the normal shared case, discard 2310 space for pc-relative relocs that have become local due to symbol 2311 visibility changes. */ 2312 2313 if (bfd_link_pic (info)) 2314 { 2315 if (SYMBOL_CALLS_LOCAL (info, h)) 2316 { 2317 struct tilepro_elf_dyn_relocs **pp; 2318 2319 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) 2320 { 2321 p->count -= p->pc_count; 2322 p->pc_count = 0; 2323 if (p->count == 0) 2324 *pp = p->next; 2325 else 2326 pp = &p->next; 2327 } 2328 } 2329 2330 /* Also discard relocs on undefined weak syms with non-default 2331 visibility. */ 2332 if (eh->dyn_relocs != NULL 2333 && h->root.type == bfd_link_hash_undefweak) 2334 { 2335 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) 2336 eh->dyn_relocs = NULL; 2337 2338 /* Make sure undefined weak symbols are output as a dynamic 2339 symbol in PIEs. */ 2340 else if (h->dynindx == -1 2341 && !h->forced_local) 2342 { 2343 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2344 return FALSE; 2345 } 2346 } 2347 } 2348 else 2349 { 2350 /* For the non-shared case, discard space for relocs against 2351 symbols which turn out to need copy relocs or are not 2352 dynamic. */ 2353 2354 if (!h->non_got_ref 2355 && ((h->def_dynamic 2356 && !h->def_regular) 2357 || (htab->elf.dynamic_sections_created 2358 && (h->root.type == bfd_link_hash_undefweak 2359 || h->root.type == bfd_link_hash_undefined)))) 2360 { 2361 /* Make sure this symbol is output as a dynamic symbol. 2362 Undefined weak syms won't yet be marked as dynamic. */ 2363 if (h->dynindx == -1 2364 && !h->forced_local) 2365 { 2366 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2367 return FALSE; 2368 } 2369 2370 /* If that succeeded, we know we'll be keeping all the 2371 relocs. */ 2372 if (h->dynindx != -1) 2373 goto keep; 2374 } 2375 2376 eh->dyn_relocs = NULL; 2377 2378 keep: ; 2379 } 2380 2381 /* Finally, allocate space. */ 2382 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2383 { 2384 asection *sreloc = elf_section_data (p->sec)->sreloc; 2385 sreloc->size += p->count * TILEPRO_ELF_RELA_BYTES; 2386 } 2387 2388 return TRUE; 2389} 2390 2391/* Find any dynamic relocs that apply to read-only sections. */ 2392 2393static bfd_boolean 2394readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) 2395{ 2396 struct tilepro_elf_link_hash_entry *eh; 2397 struct tilepro_elf_dyn_relocs *p; 2398 2399 eh = (struct tilepro_elf_link_hash_entry *) h; 2400 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2401 { 2402 asection *s = p->sec->output_section; 2403 2404 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2405 { 2406 struct bfd_link_info *info = (struct bfd_link_info *) inf; 2407 2408 info->flags |= DF_TEXTREL; 2409 2410 /* Not an error, just cut short the traversal. */ 2411 return FALSE; 2412 } 2413 } 2414 return TRUE; 2415} 2416 2417/* Return true if the dynamic symbol for a given section should be 2418 omitted when creating a shared library. */ 2419 2420static bfd_boolean 2421tilepro_elf_omit_section_dynsym (bfd *output_bfd, 2422 struct bfd_link_info *info, 2423 asection *p) 2424{ 2425 /* We keep the .got section symbol so that explicit relocations 2426 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode 2427 can be turned into relocations against the .got symbol. */ 2428 if (strcmp (p->name, ".got") == 0) 2429 return FALSE; 2430 2431 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p); 2432} 2433 2434/* Set the sizes of the dynamic sections. */ 2435 2436#define ELF32_DYNAMIC_INTERPRETER "/lib/ld.so.1" 2437 2438static bfd_boolean 2439tilepro_elf_size_dynamic_sections (bfd *output_bfd, 2440 struct bfd_link_info *info) 2441{ 2442 (void)output_bfd; 2443 2444 struct tilepro_elf_link_hash_table *htab; 2445 bfd *dynobj; 2446 asection *s; 2447 bfd *ibfd; 2448 2449 htab = tilepro_elf_hash_table (info); 2450 BFD_ASSERT (htab != NULL); 2451 dynobj = htab->elf.dynobj; 2452 BFD_ASSERT (dynobj != NULL); 2453 2454 if (elf_hash_table (info)->dynamic_sections_created) 2455 { 2456 /* Set the contents of the .interp section to the interpreter. */ 2457 if (bfd_link_executable (info) && !info->nointerp) 2458 { 2459 s = bfd_get_linker_section (dynobj, ".interp"); 2460 BFD_ASSERT (s != NULL); 2461 s->size = sizeof ELF32_DYNAMIC_INTERPRETER; 2462 s->contents = (unsigned char *) ELF32_DYNAMIC_INTERPRETER; 2463 } 2464 } 2465 2466 /* Set up .got offsets for local syms, and space for local dynamic 2467 relocs. */ 2468 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) 2469 { 2470 bfd_signed_vma *local_got; 2471 bfd_signed_vma *end_local_got; 2472 char *local_tls_type; 2473 bfd_size_type locsymcount; 2474 Elf_Internal_Shdr *symtab_hdr; 2475 asection *srel; 2476 2477 if (! is_tilepro_elf (ibfd)) 2478 continue; 2479 2480 for (s = ibfd->sections; s != NULL; s = s->next) 2481 { 2482 struct tilepro_elf_dyn_relocs *p; 2483 2484 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) 2485 { 2486 if (!bfd_is_abs_section (p->sec) 2487 && bfd_is_abs_section (p->sec->output_section)) 2488 { 2489 /* Input section has been discarded, either because 2490 it is a copy of a linkonce section or due to 2491 linker script /DISCARD/, so we'll be discarding 2492 the relocs too. */ 2493 } 2494 else if (p->count != 0) 2495 { 2496 srel = elf_section_data (p->sec)->sreloc; 2497 srel->size += p->count * TILEPRO_ELF_RELA_BYTES; 2498 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 2499 info->flags |= DF_TEXTREL; 2500 } 2501 } 2502 } 2503 2504 local_got = elf_local_got_refcounts (ibfd); 2505 if (!local_got) 2506 continue; 2507 2508 symtab_hdr = &elf_symtab_hdr (ibfd); 2509 locsymcount = symtab_hdr->sh_info; 2510 end_local_got = local_got + locsymcount; 2511 local_tls_type = _bfd_tilepro_elf_local_got_tls_type (ibfd); 2512 s = htab->elf.sgot; 2513 srel = htab->elf.srelgot; 2514 for (; local_got < end_local_got; ++local_got, ++local_tls_type) 2515 { 2516 if (*local_got > 0) 2517 { 2518 *local_got = s->size; 2519 s->size += TILEPRO_BYTES_PER_WORD; 2520 if (*local_tls_type == GOT_TLS_GD) 2521 s->size += TILEPRO_BYTES_PER_WORD; 2522 if (bfd_link_pic (info) 2523 || *local_tls_type == GOT_TLS_GD 2524 || *local_tls_type == GOT_TLS_IE) 2525 srel->size += TILEPRO_ELF_RELA_BYTES; 2526 } 2527 else 2528 *local_got = (bfd_vma) -1; 2529 } 2530 } 2531 2532 /* Allocate global sym .plt and .got entries, and space for global 2533 sym dynamic relocs. */ 2534 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); 2535 2536 if (elf_hash_table (info)->dynamic_sections_created) 2537 { 2538 /* If the .got section is more than 0x8000 bytes, we add 2539 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16 2540 bit relocations have a greater chance of working. */ 2541 if (htab->elf.sgot->size >= 0x8000 2542 && elf_hash_table (info)->hgot->root.u.def.value == 0) 2543 elf_hash_table (info)->hgot->root.u.def.value = 0x8000; 2544 } 2545 2546 if (htab->elf.sgotplt) 2547 { 2548 struct elf_link_hash_entry *got; 2549 got = elf_link_hash_lookup (elf_hash_table (info), 2550 "_GLOBAL_OFFSET_TABLE_", 2551 FALSE, FALSE, FALSE); 2552 2553 /* Don't allocate .got.plt section if there are no GOT nor PLT 2554 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */ 2555 if ((got == NULL 2556 || !got->ref_regular_nonweak) 2557 && (htab->elf.sgotplt->size 2558 == GOTPLT_HEADER_SIZE) 2559 && (htab->elf.splt == NULL 2560 || htab->elf.splt->size == 0) 2561 && (htab->elf.sgot == NULL 2562 || (htab->elf.sgot->size 2563 == get_elf_backend_data (output_bfd)->got_header_size))) 2564 htab->elf.sgotplt->size = 0; 2565 } 2566 2567 /* The check_relocs and adjust_dynamic_symbol entry points have 2568 determined the sizes of the various dynamic sections. Allocate 2569 memory for them. */ 2570 for (s = dynobj->sections; s != NULL; s = s->next) 2571 { 2572 if ((s->flags & SEC_LINKER_CREATED) == 0) 2573 continue; 2574 2575 if (s == htab->elf.splt 2576 || s == htab->elf.sgot 2577 || s == htab->elf.sgotplt 2578 || s == htab->elf.sdynbss 2579 || s == htab->elf.sdynrelro) 2580 { 2581 /* Strip this section if we don't need it; see the 2582 comment below. */ 2583 } 2584 else if (strncmp (s->name, ".rela", 5) == 0) 2585 { 2586 if (s->size != 0) 2587 { 2588 /* We use the reloc_count field as a counter if we need 2589 to copy relocs into the output file. */ 2590 s->reloc_count = 0; 2591 } 2592 } 2593 else 2594 { 2595 /* It's not one of our sections. */ 2596 continue; 2597 } 2598 2599 if (s->size == 0) 2600 { 2601 /* If we don't need this section, strip it from the 2602 output file. This is mostly to handle .rela.bss and 2603 .rela.plt. We must create both sections in 2604 create_dynamic_sections, because they must be created 2605 before the linker maps input sections to output 2606 sections. The linker does that before 2607 adjust_dynamic_symbol is called, and it is that 2608 function which decides whether anything needs to go 2609 into these sections. */ 2610 s->flags |= SEC_EXCLUDE; 2611 continue; 2612 } 2613 2614 if ((s->flags & SEC_HAS_CONTENTS) == 0) 2615 continue; 2616 2617 /* Allocate memory for the section contents. Zero the memory 2618 for the benefit of .rela.plt, which has 4 unused entries 2619 at the beginning, and we don't want garbage. */ 2620 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); 2621 if (s->contents == NULL) 2622 return FALSE; 2623 } 2624 2625 if (elf_hash_table (info)->dynamic_sections_created) 2626 { 2627 /* Add some entries to the .dynamic section. We fill in the 2628 values later, in tilepro_elf_finish_dynamic_sections, but we 2629 must add the entries now so that we get the correct size for 2630 the .dynamic section. The DT_DEBUG entry is filled in by the 2631 dynamic linker and used by the debugger. */ 2632#define add_dynamic_entry(TAG, VAL) \ 2633 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 2634 2635 if (bfd_link_executable (info)) 2636 { 2637 if (!add_dynamic_entry (DT_DEBUG, 0)) 2638 return FALSE; 2639 } 2640 2641 if (htab->elf.srelplt->size != 0) 2642 { 2643 if (!add_dynamic_entry (DT_PLTGOT, 0) 2644 || !add_dynamic_entry (DT_PLTRELSZ, 0) 2645 || !add_dynamic_entry (DT_PLTREL, DT_RELA) 2646 || !add_dynamic_entry (DT_JMPREL, 0)) 2647 return FALSE; 2648 } 2649 2650 if (!add_dynamic_entry (DT_RELA, 0) 2651 || !add_dynamic_entry (DT_RELASZ, 0) 2652 || !add_dynamic_entry (DT_RELAENT, TILEPRO_ELF_RELA_BYTES)) 2653 return FALSE; 2654 2655 /* If any dynamic relocs apply to a read-only section, 2656 then we need a DT_TEXTREL entry. */ 2657 if ((info->flags & DF_TEXTREL) == 0) 2658 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); 2659 2660 if (info->flags & DF_TEXTREL) 2661 { 2662 if (!add_dynamic_entry (DT_TEXTREL, 0)) 2663 return FALSE; 2664 } 2665 } 2666#undef add_dynamic_entry 2667 2668 return TRUE; 2669} 2670 2671/* Return the base VMA address which should be subtracted from real addresses 2672 when resolving @dtpoff relocation. 2673 This is PT_TLS segment p_vaddr. */ 2674 2675static bfd_vma 2676dtpoff_base (struct bfd_link_info *info) 2677{ 2678 /* If tls_sec is NULL, we should have signalled an error already. */ 2679 if (elf_hash_table (info)->tls_sec == NULL) 2680 return 0; 2681 return elf_hash_table (info)->tls_sec->vma; 2682} 2683 2684/* Return the relocation value for R_TILEPRO_TLS_TPOFF32. */ 2685 2686static bfd_vma 2687tpoff (struct bfd_link_info *info, bfd_vma address) 2688{ 2689 struct elf_link_hash_table *htab = elf_hash_table (info); 2690 2691 /* If tls_sec is NULL, we should have signalled an error already. */ 2692 if (htab->tls_sec == NULL) 2693 return 0; 2694 2695 return (address - htab->tls_sec->vma); 2696} 2697 2698/* Replace the MASK bits in ADDR with those in INSN, for the next 2699 TILEPRO_BUNDLE_SIZE_IN_BYTES bytes. */ 2700 2701static void 2702tilepro_replace_insn (bfd_byte *addr, const bfd_byte *mask, 2703 const bfd_byte *insn) 2704{ 2705 int i; 2706 for (i = 0; i < TILEPRO_BUNDLE_SIZE_IN_BYTES; i++) 2707 { 2708 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]); 2709 } 2710} 2711 2712/* Mask to extract the bits corresponding to an instruction in a 2713 specific pipe of a bundle. */ 2714static const bfd_byte insn_mask_X1[] = { 2715 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x7f 2716}; 2717 2718/* Mask to extract the bits corresponding to an instruction in a 2719 specific pipe of a bundle, minus the destination operand and the 2720 first source operand. */ 2721static const bfd_byte insn_mask_X0_no_dest_no_srca[] = { 2722 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00 2723}; 2724 2725static const bfd_byte insn_mask_X1_no_dest_no_srca[] = { 2726 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x7f 2727}; 2728 2729static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = { 2730 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00 2731}; 2732 2733static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = { 2734 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x78 2735}; 2736 2737/* Mask to extract the first source operand of an instruction. */ 2738static const bfd_byte srca_mask_X0[] = { 2739 0xc0, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 2740}; 2741 2742static const bfd_byte srca_mask_X1[] = { 2743 0x00, 0x00, 0x00, 0x00, 0xe0, 0x07, 0x00, 0x00 2744}; 2745 2746/* Various instructions synthesized to support tls references. */ 2747 2748/* move r0, r0 in the X1 pipe, used for tls le. */ 2749static const bfd_byte insn_tls_le_move_X1[] = { 2750 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x33, 0x08 2751}; 2752 2753/* move r0, zero in the X0 and X1 pipe, used for tls le. */ 2754static const bfd_byte insn_tls_le_move_zero_X0X1[] = { 2755 0xc0, 0xff, 0xcf, 0x00, 0xe0, 0xff, 0x33, 0x08 2756}; 2757 2758/* lw r0, r0 in the X1 pipe, used for tls ie. */ 2759static const bfd_byte insn_tls_ie_lw_X1[] = { 2760 0x00, 0x00, 0x00, 0x00, 0x00, 0x70, 0x0b, 0x40 2761}; 2762 2763/* add r0, r0, tp in various pipes, used for tls ie. */ 2764static const bfd_byte insn_tls_ie_add_X0X1[] = { 2765 0x00, 0x50, 0x0f, 0x00, 0x00, 0xa8, 0x07, 0x08 2766}; 2767static const bfd_byte insn_tls_ie_add_Y0Y1[] = { 2768 0x00, 0x50, 0x03, 0x08, 0x00, 0xa8, 0x01, 0x8c 2769}; 2770 2771/* move r0, r0 in various pipes, used for tls gd. */ 2772static const bfd_byte insn_tls_gd_add_X0X1[] = { 2773 0x00, 0xf0, 0xcf, 0x00, 0x00, 0xf8, 0x33, 0x08 2774}; 2775static const bfd_byte insn_tls_gd_add_Y0Y1[] = { 2776 0x00, 0xf0, 0x0b, 0x18, 0x00, 0xf8, 0x05, 0x9c 2777}; 2778 2779/* Relocate an TILEPRO ELF section. 2780 2781 The RELOCATE_SECTION function is called by the new ELF backend linker 2782 to handle the relocations for a section. 2783 2784 The relocs are always passed as Rela structures. 2785 2786 This function is responsible for adjusting the section contents as 2787 necessary, and (if generating a relocatable output file) adjusting 2788 the reloc addend as necessary. 2789 2790 This function does not have to worry about setting the reloc 2791 address or the reloc symbol index. 2792 2793 LOCAL_SYMS is a pointer to the swapped in local symbols. 2794 2795 LOCAL_SECTIONS is an array giving the section in the input file 2796 corresponding to the st_shndx field of each local symbol. 2797 2798 The global hash table entry for the global symbols can be found 2799 via elf_sym_hashes (input_bfd). 2800 2801 When generating relocatable output, this function must handle 2802 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 2803 going to be the section symbol corresponding to the output 2804 section, which means that the addend must be adjusted 2805 accordingly. */ 2806 2807static bfd_boolean 2808tilepro_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, 2809 bfd *input_bfd, asection *input_section, 2810 bfd_byte *contents, Elf_Internal_Rela *relocs, 2811 Elf_Internal_Sym *local_syms, 2812 asection **local_sections) 2813{ 2814 struct tilepro_elf_link_hash_table *htab; 2815 Elf_Internal_Shdr *symtab_hdr; 2816 struct elf_link_hash_entry **sym_hashes; 2817 bfd_vma *local_got_offsets; 2818 bfd_vma got_base; 2819 asection *sreloc; 2820 Elf_Internal_Rela *rel; 2821 Elf_Internal_Rela *relend; 2822 int num_relocs; 2823 2824 htab = tilepro_elf_hash_table (info); 2825 BFD_ASSERT (htab != NULL); 2826 symtab_hdr = &elf_symtab_hdr (input_bfd); 2827 sym_hashes = elf_sym_hashes (input_bfd); 2828 local_got_offsets = elf_local_got_offsets (input_bfd); 2829 2830 if (elf_hash_table (info)->hgot == NULL) 2831 got_base = 0; 2832 else 2833 got_base = elf_hash_table (info)->hgot->root.u.def.value; 2834 2835 sreloc = elf_section_data (input_section)->sreloc; 2836 2837 rel = relocs; 2838 num_relocs = input_section->reloc_count; 2839 relend = relocs + num_relocs; 2840 for (; rel < relend; rel++) 2841 { 2842 int r_type, tls_type; 2843 bfd_boolean is_tls_iele, is_tls_le; 2844 reloc_howto_type *howto; 2845 unsigned long r_symndx; 2846 struct elf_link_hash_entry *h; 2847 Elf_Internal_Sym *sym; 2848 tilepro_create_func create_func; 2849 asection *sec; 2850 bfd_vma relocation; 2851 bfd_reloc_status_type r; 2852 const char *name; 2853 bfd_vma off; 2854 bfd_boolean is_plt = FALSE; 2855 2856 bfd_boolean unresolved_reloc; 2857 2858 r_type = ELF32_R_TYPE (rel->r_info); 2859 if (r_type == R_TILEPRO_GNU_VTINHERIT 2860 || r_type == R_TILEPRO_GNU_VTENTRY) 2861 continue; 2862 2863 if ((unsigned int)r_type >= NELEMS(tilepro_elf_howto_table)) 2864 { 2865 /* Not clear if we need to check here, but just be paranoid. */ 2866 _bfd_error_handler 2867 /* xgettext:c-format */ 2868 (_("%B: unrecognized relocation (0x%x) in section `%A'"), 2869 input_bfd, r_type, input_section); 2870 bfd_set_error (bfd_error_bad_value); 2871 return FALSE; 2872 } 2873 2874 howto = tilepro_elf_howto_table + r_type; 2875 2876 /* This is a final link. */ 2877 r_symndx = ELF32_R_SYM (rel->r_info); 2878 h = NULL; 2879 sym = NULL; 2880 sec = NULL; 2881 unresolved_reloc = FALSE; 2882 if (r_symndx < symtab_hdr->sh_info) 2883 { 2884 sym = local_syms + r_symndx; 2885 sec = local_sections[r_symndx]; 2886 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2887 } 2888 else 2889 { 2890 bfd_boolean warned ATTRIBUTE_UNUSED; 2891 bfd_boolean ignored ATTRIBUTE_UNUSED; 2892 2893 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 2894 r_symndx, symtab_hdr, sym_hashes, 2895 h, sec, relocation, 2896 unresolved_reloc, warned, ignored); 2897 if (warned) 2898 { 2899 /* To avoid generating warning messages about truncated 2900 relocations, set the relocation's address to be the same as 2901 the start of this section. */ 2902 if (input_section->output_section != NULL) 2903 relocation = input_section->output_section->vma; 2904 else 2905 relocation = 0; 2906 } 2907 } 2908 2909 if (sec != NULL && discarded_section (sec)) 2910 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 2911 rel, 1, relend, howto, 0, contents); 2912 2913 if (bfd_link_relocatable (info)) 2914 continue; 2915 2916 if (h != NULL) 2917 name = h->root.root.string; 2918 else 2919 { 2920 name = (bfd_elf_string_from_elf_section 2921 (input_bfd, symtab_hdr->sh_link, sym->st_name)); 2922 if (name == NULL || *name == '\0') 2923 name = bfd_section_name (input_bfd, sec); 2924 } 2925 2926 switch (r_type) 2927 { 2928 case R_TILEPRO_TLS_GD_CALL: 2929 case R_TILEPRO_IMM8_X0_TLS_GD_ADD: 2930 case R_TILEPRO_IMM8_Y0_TLS_GD_ADD: 2931 case R_TILEPRO_IMM8_X1_TLS_GD_ADD: 2932 case R_TILEPRO_IMM8_Y1_TLS_GD_ADD: 2933 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 2934 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 2935 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 2936 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 2937 tls_type = GOT_UNKNOWN; 2938 if (h == NULL && local_got_offsets) 2939 tls_type = 2940 _bfd_tilepro_elf_local_got_tls_type (input_bfd) [r_symndx]; 2941 else if (h != NULL) 2942 tls_type = tilepro_elf_hash_entry(h)->tls_type; 2943 2944 is_tls_iele = (! bfd_link_pic (info) || tls_type == GOT_TLS_IE); 2945 is_tls_le = is_tls_iele && (!bfd_link_pic (info) 2946 && (h == NULL || h->dynindx == -1)); 2947 2948 if (r_type == R_TILEPRO_TLS_GD_CALL) 2949 { 2950 if (is_tls_le) 2951 { 2952 /* GD -> LE */ 2953 tilepro_replace_insn (contents + rel->r_offset, 2954 insn_mask_X1, insn_tls_le_move_X1); 2955 continue; 2956 } 2957 else if (is_tls_iele) 2958 { 2959 /* GD -> IE */ 2960 tilepro_replace_insn (contents + rel->r_offset, 2961 insn_mask_X1, insn_tls_ie_lw_X1); 2962 continue; 2963 } 2964 2965 /* GD -> GD */ 2966 h = (struct elf_link_hash_entry *) 2967 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE, 2968 FALSE, TRUE); 2969 BFD_ASSERT (h != NULL); 2970 r_type = R_TILEPRO_JOFFLONG_X1_PLT; 2971 howto = tilepro_elf_howto_table + r_type; 2972 } 2973 else if (r_type == R_TILEPRO_IMM16_X0_TLS_GD_HA 2974 || r_type == R_TILEPRO_IMM16_X0_TLS_IE_HA) 2975 { 2976 if (is_tls_le) 2977 tilepro_replace_insn (contents + rel->r_offset, srca_mask_X0, 2978 insn_tls_le_move_zero_X0X1); 2979 } 2980 else if (r_type == R_TILEPRO_IMM16_X1_TLS_GD_HA 2981 || r_type == R_TILEPRO_IMM16_X1_TLS_IE_HA) 2982 { 2983 if (is_tls_le) 2984 tilepro_replace_insn (contents + rel->r_offset, srca_mask_X1, 2985 insn_tls_le_move_zero_X0X1); 2986 } 2987 else 2988 { 2989 const bfd_byte *mask = NULL; 2990 const bfd_byte *add_insn = NULL; 2991 2992 switch (r_type) 2993 { 2994 case R_TILEPRO_IMM8_X0_TLS_GD_ADD: 2995 add_insn = is_tls_iele ? insn_tls_ie_add_X0X1 2996 : insn_tls_gd_add_X0X1; 2997 mask = insn_mask_X0_no_dest_no_srca; 2998 break; 2999 case R_TILEPRO_IMM8_X1_TLS_GD_ADD: 3000 add_insn = is_tls_iele ? insn_tls_ie_add_X0X1 3001 : insn_tls_gd_add_X0X1; 3002 mask = insn_mask_X1_no_dest_no_srca; 3003 break; 3004 case R_TILEPRO_IMM8_Y0_TLS_GD_ADD: 3005 add_insn = is_tls_iele ? insn_tls_ie_add_Y0Y1 3006 : insn_tls_gd_add_Y0Y1; 3007 mask = insn_mask_Y0_no_dest_no_srca; 3008 break; 3009 case R_TILEPRO_IMM8_Y1_TLS_GD_ADD: 3010 add_insn = is_tls_iele ? insn_tls_ie_add_Y0Y1 3011 : insn_tls_gd_add_Y0Y1; 3012 mask = insn_mask_Y1_no_dest_no_srca; 3013 break; 3014 } 3015 3016 tilepro_replace_insn (contents + rel->r_offset, mask, add_insn); 3017 3018 continue; 3019 } 3020 break; 3021 case R_TILEPRO_TLS_IE_LOAD: 3022 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1)) 3023 /* IE -> LE */ 3024 tilepro_replace_insn (contents + rel->r_offset, 3025 insn_mask_X1_no_dest_no_srca, 3026 insn_tls_le_move_X1); 3027 else 3028 /* IE -> IE */ 3029 tilepro_replace_insn (contents + rel->r_offset, 3030 insn_mask_X1_no_dest_no_srca, 3031 insn_tls_ie_lw_X1); 3032 continue; 3033 break; 3034 default: 3035 break; 3036 } 3037 3038 switch (r_type) 3039 { 3040 case R_TILEPRO_IMM16_X0_GOT: 3041 case R_TILEPRO_IMM16_X1_GOT: 3042 case R_TILEPRO_IMM16_X0_GOT_LO: 3043 case R_TILEPRO_IMM16_X1_GOT_LO: 3044 case R_TILEPRO_IMM16_X0_GOT_HI: 3045 case R_TILEPRO_IMM16_X1_GOT_HI: 3046 case R_TILEPRO_IMM16_X0_GOT_HA: 3047 case R_TILEPRO_IMM16_X1_GOT_HA: 3048 /* Relocation is to the entry for this symbol in the global 3049 offset table. */ 3050 if (htab->elf.sgot == NULL) 3051 abort (); 3052 3053 if (h != NULL) 3054 { 3055 bfd_boolean dyn; 3056 3057 off = h->got.offset; 3058 BFD_ASSERT (off != (bfd_vma) -1); 3059 dyn = elf_hash_table (info)->dynamic_sections_created; 3060 3061 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 3062 bfd_link_pic (info), 3063 h) 3064 || (bfd_link_pic (info) 3065 && SYMBOL_REFERENCES_LOCAL (info, h))) 3066 { 3067 /* This is actually a static link, or it is a 3068 -Bsymbolic link and the symbol is defined 3069 locally, or the symbol was forced to be local 3070 because of a version file. We must initialize 3071 this entry in the global offset table. Since the 3072 offset must always be a multiple 3073 of 4 for 32-bit, we use the least significant bit 3074 to record whether we have initialized it already. 3075 3076 When doing a dynamic link, we create a .rela.got 3077 relocation entry to initialize the value. This 3078 is done in the finish_dynamic_symbol routine. */ 3079 if ((off & 1) != 0) 3080 off &= ~1; 3081 else 3082 { 3083 bfd_put_32 (output_bfd, relocation, 3084 htab->elf.sgot->contents + off); 3085 h->got.offset |= 1; 3086 } 3087 } 3088 else 3089 unresolved_reloc = FALSE; 3090 } 3091 else 3092 { 3093 BFD_ASSERT (local_got_offsets != NULL 3094 && local_got_offsets[r_symndx] != (bfd_vma) -1); 3095 3096 off = local_got_offsets[r_symndx]; 3097 3098 /* The offset must always be a multiple of 4 on 32-bit. 3099 We use the least significant bit to record 3100 whether we have already processed this entry. */ 3101 if ((off & 1) != 0) 3102 off &= ~1; 3103 else 3104 { 3105 if (bfd_link_pic (info)) 3106 { 3107 asection *s; 3108 Elf_Internal_Rela outrel; 3109 3110 /* We need to generate a R_TILEPRO_RELATIVE reloc 3111 for the dynamic linker. */ 3112 s = htab->elf.srelgot; 3113 BFD_ASSERT (s != NULL); 3114 3115 outrel.r_offset = (htab->elf.sgot->output_section->vma 3116 + htab->elf.sgot->output_offset 3117 + off); 3118 outrel.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE); 3119 outrel.r_addend = relocation; 3120 relocation = 0; 3121 tilepro_elf_append_rela_32 (output_bfd, s, &outrel); 3122 } 3123 3124 bfd_put_32 (output_bfd, relocation, 3125 htab->elf.sgot->contents + off); 3126 local_got_offsets[r_symndx] |= 1; 3127 } 3128 } 3129 relocation = off - got_base; 3130 break; 3131 3132 case R_TILEPRO_JOFFLONG_X1_PLT: 3133 /* Relocation is to the entry for this symbol in the 3134 procedure linkage table. */ 3135 BFD_ASSERT (h != NULL); 3136 3137 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL) 3138 { 3139 /* We didn't make a PLT entry for this symbol. This 3140 happens when statically linking PIC code, or when 3141 using -Bsymbolic. */ 3142 break; 3143 } 3144 3145 relocation = (htab->elf.splt->output_section->vma 3146 + htab->elf.splt->output_offset 3147 + h->plt.offset); 3148 unresolved_reloc = FALSE; 3149 break; 3150 3151 case R_TILEPRO_32_PCREL: 3152 case R_TILEPRO_16_PCREL: 3153 case R_TILEPRO_8_PCREL: 3154 case R_TILEPRO_IMM16_X0_PCREL: 3155 case R_TILEPRO_IMM16_X1_PCREL: 3156 case R_TILEPRO_IMM16_X0_LO_PCREL: 3157 case R_TILEPRO_IMM16_X1_LO_PCREL: 3158 case R_TILEPRO_IMM16_X0_HI_PCREL: 3159 case R_TILEPRO_IMM16_X1_HI_PCREL: 3160 case R_TILEPRO_IMM16_X0_HA_PCREL: 3161 case R_TILEPRO_IMM16_X1_HA_PCREL: 3162 if (h != NULL 3163 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 3164 break; 3165 /* Fall through. */ 3166 case R_TILEPRO_32: 3167 case R_TILEPRO_16: 3168 case R_TILEPRO_8: 3169 case R_TILEPRO_LO16: 3170 case R_TILEPRO_HI16: 3171 case R_TILEPRO_HA16: 3172 case R_TILEPRO_COPY: 3173 case R_TILEPRO_GLOB_DAT: 3174 case R_TILEPRO_JMP_SLOT: 3175 case R_TILEPRO_RELATIVE: 3176 case R_TILEPRO_BROFF_X1: 3177 case R_TILEPRO_JOFFLONG_X1: 3178 case R_TILEPRO_IMM8_X0: 3179 case R_TILEPRO_IMM8_Y0: 3180 case R_TILEPRO_IMM8_X1: 3181 case R_TILEPRO_IMM8_Y1: 3182 case R_TILEPRO_DEST_IMM8_X1: 3183 case R_TILEPRO_MT_IMM15_X1: 3184 case R_TILEPRO_MF_IMM15_X1: 3185 case R_TILEPRO_IMM16_X0: 3186 case R_TILEPRO_IMM16_X1: 3187 case R_TILEPRO_IMM16_X0_LO: 3188 case R_TILEPRO_IMM16_X1_LO: 3189 case R_TILEPRO_IMM16_X0_HI: 3190 case R_TILEPRO_IMM16_X1_HI: 3191 case R_TILEPRO_IMM16_X0_HA: 3192 case R_TILEPRO_IMM16_X1_HA: 3193 case R_TILEPRO_MMSTART_X0: 3194 case R_TILEPRO_MMEND_X0: 3195 case R_TILEPRO_MMSTART_X1: 3196 case R_TILEPRO_MMEND_X1: 3197 case R_TILEPRO_SHAMT_X0: 3198 case R_TILEPRO_SHAMT_X1: 3199 case R_TILEPRO_SHAMT_Y0: 3200 case R_TILEPRO_SHAMT_Y1: 3201 if ((input_section->flags & SEC_ALLOC) == 0) 3202 break; 3203 3204 if ((bfd_link_pic (info) 3205 && (h == NULL 3206 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 3207 || h->root.type != bfd_link_hash_undefweak) 3208 && (! howto->pc_relative 3209 || !SYMBOL_CALLS_LOCAL (info, h))) 3210 || (!bfd_link_pic (info) 3211 && h != NULL 3212 && h->dynindx != -1 3213 && !h->non_got_ref 3214 && ((h->def_dynamic 3215 && !h->def_regular) 3216 || h->root.type == bfd_link_hash_undefweak 3217 || h->root.type == bfd_link_hash_undefined))) 3218 { 3219 Elf_Internal_Rela outrel; 3220 bfd_boolean skip, relocate = FALSE; 3221 3222 /* When generating a shared object, these relocations 3223 are copied into the output file to be resolved at run 3224 time. */ 3225 3226 BFD_ASSERT (sreloc != NULL); 3227 3228 skip = FALSE; 3229 3230 outrel.r_offset = 3231 _bfd_elf_section_offset (output_bfd, info, input_section, 3232 rel->r_offset); 3233 if (outrel.r_offset == (bfd_vma) -1) 3234 skip = TRUE; 3235 else if (outrel.r_offset == (bfd_vma) -2) 3236 skip = TRUE, relocate = TRUE; 3237 outrel.r_offset += (input_section->output_section->vma 3238 + input_section->output_offset); 3239 3240 switch (r_type) 3241 { 3242 case R_TILEPRO_32_PCREL: 3243 case R_TILEPRO_16_PCREL: 3244 case R_TILEPRO_8_PCREL: 3245 /* If the symbol is not dynamic, we should not keep 3246 a dynamic relocation. But an .rela.* slot has been 3247 allocated for it, output R_TILEPRO_NONE. 3248 FIXME: Add code tracking needed dynamic relocs as 3249 e.g. i386 has. */ 3250 if (h->dynindx == -1) 3251 skip = TRUE, relocate = TRUE; 3252 break; 3253 } 3254 3255 if (skip) 3256 memset (&outrel, 0, sizeof outrel); 3257 /* h->dynindx may be -1 if the symbol was marked to 3258 become local. */ 3259 else if (h != NULL && 3260 h->dynindx != -1 3261 && (! is_plt 3262 || !bfd_link_pic (info) 3263 || !SYMBOLIC_BIND (info, h) 3264 || !h->def_regular)) 3265 { 3266 BFD_ASSERT (h->dynindx != -1); 3267 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 3268 outrel.r_addend = rel->r_addend; 3269 } 3270 else 3271 { 3272 if (r_type == R_TILEPRO_32) 3273 { 3274 outrel.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE); 3275 outrel.r_addend = relocation + rel->r_addend; 3276 } 3277 else 3278 { 3279 long indx; 3280 3281 outrel.r_addend = relocation + rel->r_addend; 3282 3283 if (is_plt) 3284 sec = htab->elf.splt; 3285 3286 if (bfd_is_abs_section (sec)) 3287 indx = 0; 3288 else if (sec == NULL || sec->owner == NULL) 3289 { 3290 bfd_set_error (bfd_error_bad_value); 3291 return FALSE; 3292 } 3293 else 3294 { 3295 asection *osec; 3296 3297 /* We are turning this relocation into one 3298 against a section symbol. It would be 3299 proper to subtract the symbol's value, 3300 osec->vma, from the emitted reloc addend, 3301 but ld.so expects buggy relocs. */ 3302 osec = sec->output_section; 3303 indx = elf_section_data (osec)->dynindx; 3304 3305 if (indx == 0) 3306 { 3307 osec = htab->elf.text_index_section; 3308 indx = elf_section_data (osec)->dynindx; 3309 } 3310 3311 /* FIXME: we really should be able to link non-pic 3312 shared libraries. */ 3313 if (indx == 0) 3314 { 3315 BFD_FAIL (); 3316 _bfd_error_handler 3317 (_("%B: probably compiled without -fPIC?"), 3318 input_bfd); 3319 bfd_set_error (bfd_error_bad_value); 3320 return FALSE; 3321 } 3322 } 3323 3324 outrel.r_info = ELF32_R_INFO (indx, r_type); 3325 } 3326 } 3327 3328 tilepro_elf_append_rela_32 (output_bfd, sreloc, &outrel); 3329 3330 /* This reloc will be computed at runtime, so there's no 3331 need to do anything now. */ 3332 if (! relocate) 3333 continue; 3334 } 3335 break; 3336 3337 case R_TILEPRO_IMM16_X0_TLS_LE: 3338 case R_TILEPRO_IMM16_X1_TLS_LE: 3339 case R_TILEPRO_IMM16_X0_TLS_LE_LO: 3340 case R_TILEPRO_IMM16_X1_TLS_LE_LO: 3341 case R_TILEPRO_IMM16_X0_TLS_LE_HI: 3342 case R_TILEPRO_IMM16_X1_TLS_LE_HI: 3343 case R_TILEPRO_IMM16_X0_TLS_LE_HA: 3344 case R_TILEPRO_IMM16_X1_TLS_LE_HA: 3345 if (bfd_link_pic (info)) 3346 { 3347 Elf_Internal_Rela outrel; 3348 bfd_boolean skip; 3349 3350 BFD_ASSERT (sreloc != NULL); 3351 skip = FALSE; 3352 outrel.r_offset = 3353 _bfd_elf_section_offset (output_bfd, info, input_section, 3354 rel->r_offset); 3355 if (outrel.r_offset == (bfd_vma) -1) 3356 skip = TRUE; 3357 else if (outrel.r_offset == (bfd_vma) -2) 3358 skip = TRUE; 3359 outrel.r_offset += (input_section->output_section->vma 3360 + input_section->output_offset); 3361 if (skip) 3362 memset (&outrel, 0, sizeof outrel); 3363 else 3364 { 3365 outrel.r_info = ELF32_R_INFO (0, r_type); 3366 outrel.r_addend = relocation - dtpoff_base (info) 3367 + rel->r_addend; 3368 } 3369 3370 tilepro_elf_append_rela_32 (output_bfd, sreloc, &outrel); 3371 continue; 3372 } 3373 relocation = tpoff (info, relocation); 3374 break; 3375 3376 case R_TILEPRO_IMM16_X0_TLS_GD: 3377 case R_TILEPRO_IMM16_X1_TLS_GD: 3378 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 3379 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 3380 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 3381 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 3382 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 3383 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 3384 case R_TILEPRO_IMM16_X0_TLS_IE: 3385 case R_TILEPRO_IMM16_X1_TLS_IE: 3386 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 3387 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 3388 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 3389 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 3390 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 3391 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 3392 r_type = tilepro_elf_tls_transition (info, r_type, h == NULL); 3393 tls_type = GOT_UNKNOWN; 3394 if (h == NULL && local_got_offsets) 3395 tls_type 3396 = _bfd_tilepro_elf_local_got_tls_type (input_bfd) [r_symndx]; 3397 else if (h != NULL) 3398 { 3399 tls_type = tilepro_elf_hash_entry(h)->tls_type; 3400 if (!bfd_link_pic (info) && h->dynindx == -1 && tls_type == GOT_TLS_IE) 3401 r_type = tilepro_tls_translate_to_le (r_type); 3402 } 3403 if (tls_type == GOT_TLS_IE) 3404 r_type = tilepro_tls_translate_to_ie (r_type); 3405 3406 if (r_type == R_TILEPRO_IMM16_X0_TLS_LE 3407 || r_type == R_TILEPRO_IMM16_X1_TLS_LE 3408 || r_type == R_TILEPRO_IMM16_X0_TLS_LE_LO 3409 || r_type == R_TILEPRO_IMM16_X1_TLS_LE_LO 3410 || r_type == R_TILEPRO_IMM16_X0_TLS_LE_HI 3411 || r_type == R_TILEPRO_IMM16_X1_TLS_LE_HI 3412 || r_type == R_TILEPRO_IMM16_X0_TLS_LE_HA 3413 || r_type == R_TILEPRO_IMM16_X1_TLS_LE_HA) 3414 { 3415 relocation = tpoff (info, relocation); 3416 break; 3417 } 3418 3419 if (h != NULL) 3420 { 3421 off = h->got.offset; 3422 h->got.offset |= 1; 3423 } 3424 else 3425 { 3426 BFD_ASSERT (local_got_offsets != NULL); 3427 off = local_got_offsets[r_symndx]; 3428 local_got_offsets[r_symndx] |= 1; 3429 } 3430 3431 if (htab->elf.sgot == NULL) 3432 abort (); 3433 3434 if ((off & 1) != 0) 3435 off &= ~1; 3436 else 3437 { 3438 Elf_Internal_Rela outrel; 3439 int indx = 0; 3440 bfd_boolean need_relocs = FALSE; 3441 3442 if (htab->elf.srelgot == NULL) 3443 abort (); 3444 3445 if (h != NULL) 3446 { 3447 bfd_boolean dyn; 3448 dyn = htab->elf.dynamic_sections_created; 3449 3450 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 3451 bfd_link_pic (info), 3452 h) 3453 && (!bfd_link_pic (info) 3454 || !SYMBOL_REFERENCES_LOCAL (info, h))) 3455 { 3456 indx = h->dynindx; 3457 } 3458 } 3459 3460 /* The GOT entries have not been initialized yet. Do it 3461 now, and emit any relocations. */ 3462 if ((bfd_link_pic (info) || indx != 0) 3463 && (h == NULL 3464 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 3465 || h->root.type != bfd_link_hash_undefweak)) 3466 need_relocs = TRUE; 3467 3468 switch (r_type) 3469 { 3470 case R_TILEPRO_IMM16_X0_TLS_IE: 3471 case R_TILEPRO_IMM16_X1_TLS_IE: 3472 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 3473 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 3474 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 3475 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 3476 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 3477 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 3478 if (need_relocs) { 3479 bfd_put_32 (output_bfd, 0, htab->elf.sgot->contents + off); 3480 outrel.r_offset = (htab->elf.sgot->output_section->vma 3481 + htab->elf.sgot->output_offset + off); 3482 outrel.r_addend = 0; 3483 if (indx == 0) 3484 outrel.r_addend = relocation - dtpoff_base (info); 3485 outrel.r_info = ELF32_R_INFO (indx, R_TILEPRO_TLS_TPOFF32); 3486 tilepro_elf_append_rela_32 (output_bfd, htab->elf.srelgot, 3487 &outrel); 3488 } else { 3489 bfd_put_32 (output_bfd, tpoff (info, relocation), 3490 htab->elf.sgot->contents + off); 3491 } 3492 break; 3493 3494 case R_TILEPRO_IMM16_X0_TLS_GD: 3495 case R_TILEPRO_IMM16_X1_TLS_GD: 3496 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 3497 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 3498 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 3499 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 3500 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 3501 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 3502 if (need_relocs) { 3503 outrel.r_offset = (htab->elf.sgot->output_section->vma 3504 + htab->elf.sgot->output_offset + off); 3505 outrel.r_addend = 0; 3506 outrel.r_info = ELF32_R_INFO (indx, R_TILEPRO_TLS_DTPMOD32); 3507 bfd_put_32 (output_bfd, 0, htab->elf.sgot->contents + off); 3508 tilepro_elf_append_rela_32 (output_bfd, htab->elf.srelgot, 3509 &outrel); 3510 if (indx == 0) 3511 { 3512 BFD_ASSERT (! unresolved_reloc); 3513 bfd_put_32 (output_bfd, 3514 relocation - dtpoff_base (info), 3515 (htab->elf.sgot->contents + off + 3516 TILEPRO_BYTES_PER_WORD)); 3517 } 3518 else 3519 { 3520 bfd_put_32 (output_bfd, 0, 3521 (htab->elf.sgot->contents + off + 3522 TILEPRO_BYTES_PER_WORD)); 3523 outrel.r_info = ELF32_R_INFO (indx, 3524 R_TILEPRO_TLS_DTPOFF32); 3525 outrel.r_offset += TILEPRO_BYTES_PER_WORD; 3526 tilepro_elf_append_rela_32 (output_bfd, 3527 htab->elf.srelgot, &outrel); 3528 } 3529 } 3530 3531 else { 3532 /* If we are not emitting relocations for a 3533 general dynamic reference, then we must be in a 3534 static link or an executable link with the 3535 symbol binding locally. Mark it as belonging 3536 to module 1, the executable. */ 3537 bfd_put_32 (output_bfd, 1, 3538 htab->elf.sgot->contents + off ); 3539 bfd_put_32 (output_bfd, relocation - dtpoff_base (info), 3540 htab->elf.sgot->contents + off + 3541 TILEPRO_BYTES_PER_WORD); 3542 } 3543 break; 3544 } 3545 } 3546 3547 if (off >= (bfd_vma) -2) 3548 abort (); 3549 3550 relocation = off - got_base; 3551 unresolved_reloc = FALSE; 3552 howto = tilepro_elf_howto_table + r_type; 3553 break; 3554 3555 default: 3556 break; 3557 } 3558 3559 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections 3560 because such sections are not SEC_ALLOC and thus ld.so will 3561 not process them. */ 3562 if (unresolved_reloc 3563 && !((input_section->flags & SEC_DEBUGGING) != 0 3564 && h->def_dynamic) 3565 && _bfd_elf_section_offset (output_bfd, info, input_section, 3566 rel->r_offset) != (bfd_vma) -1) 3567 _bfd_error_handler 3568 /* xgettext:c-format */ 3569 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), 3570 input_bfd, 3571 input_section, 3572 (long) rel->r_offset, 3573 howto->name, 3574 h->root.root.string); 3575 3576 r = bfd_reloc_continue; 3577 3578 /* For the _HA types, we add 0x8000 so that if bit 15 is set, 3579 * we will increment bit 16. The howto->rightshift takes care 3580 * of the rest for us. */ 3581 switch (r_type) 3582 { 3583 case R_TILEPRO_HA16: 3584 case R_TILEPRO_IMM16_X0_HA: 3585 case R_TILEPRO_IMM16_X1_HA: 3586 case R_TILEPRO_IMM16_X0_HA_PCREL: 3587 case R_TILEPRO_IMM16_X1_HA_PCREL: 3588 case R_TILEPRO_IMM16_X0_GOT_HA: 3589 case R_TILEPRO_IMM16_X1_GOT_HA: 3590 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 3591 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 3592 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 3593 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 3594 relocation += 0x8000; 3595 break; 3596 } 3597 3598 /* Get the operand creation function, if any. */ 3599 create_func = reloc_to_create_func[r_type]; 3600 if (create_func == NULL) 3601 { 3602 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3603 contents, rel->r_offset, 3604 relocation, rel->r_addend); 3605 } 3606 else 3607 { 3608 if (howto->pc_relative) 3609 { 3610 relocation -= 3611 input_section->output_section->vma + input_section->output_offset; 3612 if (howto->pcrel_offset) 3613 relocation -= rel->r_offset; 3614 } 3615 3616 bfd_byte *data; 3617 3618 /* Add the relocation addend if any to the final target value */ 3619 relocation += rel->r_addend; 3620 3621 /* Do basic range checking */ 3622 r = bfd_check_overflow (howto->complain_on_overflow, 3623 howto->bitsize, 3624 howto->rightshift, 3625 32, 3626 relocation); 3627 3628 /* 3629 * Write the relocated value out into the raw section data. 3630 * Don't put a relocation out in the .rela section. 3631 */ 3632 tilepro_bundle_bits mask = create_func(-1); 3633 tilepro_bundle_bits value = create_func(relocation >> howto->rightshift); 3634 3635 /* Only touch bytes while the mask is not 0, so we 3636 don't write to out of bounds memory if this is actually 3637 a 16-bit switch instruction. */ 3638 for (data = contents + rel->r_offset; mask != 0; data++) 3639 { 3640 bfd_byte byte_mask = (bfd_byte)mask; 3641 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask); 3642 mask >>= 8; 3643 value >>= 8; 3644 } 3645 } 3646 3647 if (r != bfd_reloc_ok) 3648 { 3649 const char *msg = NULL; 3650 3651 switch (r) 3652 { 3653 case bfd_reloc_overflow: 3654 (*info->callbacks->reloc_overflow) 3655 (info, (h ? &h->root : NULL), name, howto->name, 3656 (bfd_vma) 0, input_bfd, input_section, rel->r_offset); 3657 break; 3658 3659 case bfd_reloc_undefined: 3660 (*info->callbacks->undefined_symbol) 3661 (info, name, input_bfd, input_section, rel->r_offset, TRUE); 3662 break; 3663 3664 case bfd_reloc_outofrange: 3665 msg = _("internal error: out of range error"); 3666 break; 3667 3668 case bfd_reloc_notsupported: 3669 msg = _("internal error: unsupported relocation error"); 3670 break; 3671 3672 case bfd_reloc_dangerous: 3673 msg = _("internal error: dangerous relocation"); 3674 break; 3675 3676 default: 3677 msg = _("internal error: unknown error"); 3678 break; 3679 } 3680 3681 if (msg) 3682 (*info->callbacks->warning) (info, msg, name, input_bfd, 3683 input_section, rel->r_offset); 3684 } 3685 } 3686 3687 return TRUE; 3688} 3689 3690/* Finish up dynamic symbol handling. We set the contents of various 3691 dynamic sections here. */ 3692 3693static bfd_boolean 3694tilepro_elf_finish_dynamic_symbol (bfd *output_bfd, 3695 struct bfd_link_info *info, 3696 struct elf_link_hash_entry *h, 3697 Elf_Internal_Sym *sym) 3698{ 3699 struct tilepro_elf_link_hash_table *htab; 3700 3701 htab = tilepro_elf_hash_table (info); 3702 BFD_ASSERT (htab != NULL); 3703 3704 if (h->plt.offset != (bfd_vma) -1) 3705 { 3706 asection *splt; 3707 asection *srela; 3708 asection *sgotplt; 3709 Elf_Internal_Rela rela; 3710 bfd_byte *loc; 3711 bfd_vma r_offset; 3712 3713 int rela_index; 3714 3715 /* This symbol has an entry in the PLT. Set it up. */ 3716 3717 BFD_ASSERT (h->dynindx != -1); 3718 3719 splt = htab->elf.splt; 3720 srela = htab->elf.srelplt; 3721 sgotplt = htab->elf.sgotplt; 3722 3723 if (splt == NULL || srela == NULL) 3724 abort (); 3725 3726 /* Fill in the entry in the procedure linkage table. */ 3727 rela_index = tilepro_plt_entry_build (splt, sgotplt, h->plt.offset, 3728 &r_offset); 3729 3730 /* Fill in the entry in the global offset table, which initially points 3731 to the beginning of the plt. */ 3732 bfd_put_32 (output_bfd, splt->output_section->vma + splt->output_offset, 3733 sgotplt->contents + r_offset); 3734 3735 /* Fill in the entry in the .rela.plt section. */ 3736 rela.r_offset = (sgotplt->output_section->vma 3737 + sgotplt->output_offset 3738 + r_offset); 3739 rela.r_addend = 0; 3740 rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_JMP_SLOT); 3741 3742 loc = srela->contents + rela_index * sizeof (Elf32_External_Rela); 3743 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3744 3745 if (!h->def_regular) 3746 { 3747 /* Mark the symbol as undefined, rather than as defined in 3748 the .plt section. Leave the value alone. */ 3749 sym->st_shndx = SHN_UNDEF; 3750 /* If the symbol is weak, we do need to clear the value. 3751 Otherwise, the PLT entry would provide a definition for 3752 the symbol even if the symbol wasn't defined anywhere, 3753 and so the symbol would never be NULL. */ 3754 if (!h->ref_regular_nonweak) 3755 sym->st_value = 0; 3756 } 3757 } 3758 3759 if (h->got.offset != (bfd_vma) -1 3760 && tilepro_elf_hash_entry(h)->tls_type != GOT_TLS_GD 3761 && tilepro_elf_hash_entry(h)->tls_type != GOT_TLS_IE) 3762 { 3763 asection *sgot; 3764 asection *srela; 3765 Elf_Internal_Rela rela; 3766 3767 /* This symbol has an entry in the GOT. Set it up. */ 3768 3769 sgot = htab->elf.sgot; 3770 srela = htab->elf.srelgot; 3771 BFD_ASSERT (sgot != NULL && srela != NULL); 3772 3773 rela.r_offset = (sgot->output_section->vma 3774 + sgot->output_offset 3775 + (h->got.offset &~ (bfd_vma) 1)); 3776 3777 /* If this is a -Bsymbolic link, and the symbol is defined 3778 locally, we just want to emit a RELATIVE reloc. Likewise if 3779 the symbol was forced to be local because of a version file. 3780 The entry in the global offset table will already have been 3781 initialized in the relocate_section function. */ 3782 if (bfd_link_pic (info) 3783 && (info->symbolic || h->dynindx == -1) 3784 && h->def_regular) 3785 { 3786 asection *sec = h->root.u.def.section; 3787 rela.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE); 3788 rela.r_addend = (h->root.u.def.value 3789 + sec->output_section->vma 3790 + sec->output_offset); 3791 } 3792 else 3793 { 3794 rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_GLOB_DAT); 3795 rela.r_addend = 0; 3796 } 3797 3798 bfd_put_32 (output_bfd, 0, 3799 sgot->contents + (h->got.offset & ~(bfd_vma) 1)); 3800 tilepro_elf_append_rela_32 (output_bfd, srela, &rela); 3801 } 3802 3803 if (h->needs_copy) 3804 { 3805 asection *s; 3806 Elf_Internal_Rela rela; 3807 3808 /* This symbols needs a copy reloc. Set it up. */ 3809 BFD_ASSERT (h->dynindx != -1); 3810 3811 rela.r_offset = (h->root.u.def.value 3812 + h->root.u.def.section->output_section->vma 3813 + h->root.u.def.section->output_offset); 3814 rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_COPY); 3815 rela.r_addend = 0; 3816 if (h->root.u.def.section == htab->elf.sdynrelro) 3817 s = htab->elf.sreldynrelro; 3818 else 3819 s = htab->elf.srelbss; 3820 tilepro_elf_append_rela_32 (output_bfd, s, &rela); 3821 } 3822 3823 /* Mark some specially defined symbols as absolute. */ 3824 if (h == htab->elf.hdynamic 3825 || (h == htab->elf.hgot || h == htab->elf.hplt)) 3826 sym->st_shndx = SHN_ABS; 3827 3828 return TRUE; 3829} 3830 3831/* Finish up the dynamic sections. */ 3832 3833static bfd_boolean 3834tilepro_finish_dyn (bfd *output_bfd, struct bfd_link_info *info, 3835 bfd *dynobj, asection *sdyn, 3836 asection *splt ATTRIBUTE_UNUSED) 3837{ 3838 Elf32_External_Dyn *dyncon, *dynconend; 3839 struct tilepro_elf_link_hash_table *htab; 3840 3841 htab = tilepro_elf_hash_table (info); 3842 BFD_ASSERT (htab != NULL); 3843 dyncon = (Elf32_External_Dyn *) sdyn->contents; 3844 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); 3845 for (; dyncon < dynconend; dyncon++) 3846 { 3847 Elf_Internal_Dyn dyn; 3848 asection *s; 3849 3850 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 3851 3852 switch (dyn.d_tag) 3853 { 3854 case DT_PLTGOT: 3855 s = htab->elf.sgotplt; 3856 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 3857 break; 3858 case DT_JMPREL: 3859 s = htab->elf.srelplt; 3860 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 3861 break; 3862 case DT_PLTRELSZ: 3863 s = htab->elf.srelplt; 3864 dyn.d_un.d_val = s->size; 3865 break; 3866 default: 3867 continue; 3868 } 3869 3870 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3871 } 3872 return TRUE; 3873} 3874 3875static bfd_boolean 3876tilepro_elf_finish_dynamic_sections (bfd *output_bfd, 3877 struct bfd_link_info *info) 3878{ 3879 bfd *dynobj; 3880 asection *sdyn; 3881 struct tilepro_elf_link_hash_table *htab; 3882 3883 htab = tilepro_elf_hash_table (info); 3884 BFD_ASSERT (htab != NULL); 3885 dynobj = htab->elf.dynobj; 3886 3887 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 3888 3889 if (elf_hash_table (info)->dynamic_sections_created) 3890 { 3891 asection *splt; 3892 bfd_boolean ret; 3893 3894 splt = htab->elf.splt; 3895 BFD_ASSERT (splt != NULL && sdyn != NULL); 3896 3897 ret = tilepro_finish_dyn (output_bfd, info, dynobj, sdyn, splt); 3898 3899 if (ret != TRUE) 3900 return ret; 3901 3902 /* Fill in the first entry in the procedure linkage table. */ 3903 if (splt->size > 0) 3904 { 3905 memcpy (splt->contents, tilepro_plt0_entry, PLT_HEADER_SIZE); 3906 memset (splt->contents + PLT_HEADER_SIZE, 0, 3907 PLT_ENTRY_SIZE - PLT_HEADER_SIZE); 3908 } 3909 3910 if (elf_section_data (splt->output_section) != NULL) 3911 elf_section_data (splt->output_section)->this_hdr.sh_entsize 3912 = PLT_ENTRY_SIZE; 3913 } 3914 3915 if (htab->elf.sgotplt) 3916 { 3917 if (bfd_is_abs_section (htab->elf.sgotplt->output_section)) 3918 { 3919 _bfd_error_handler 3920 (_("discarded output section: `%A'"), htab->elf.sgotplt); 3921 return FALSE; 3922 } 3923 3924 if (htab->elf.sgotplt->size > 0) 3925 { 3926 /* Write the first two entries in .got.plt, needed for the dynamic 3927 linker. */ 3928 bfd_put_32 (output_bfd, (bfd_vma) -1, 3929 htab->elf.sgotplt->contents); 3930 bfd_put_32 (output_bfd, (bfd_vma) 0, 3931 htab->elf.sgotplt->contents + GOT_ENTRY_SIZE); 3932 } 3933 3934 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize 3935 = GOT_ENTRY_SIZE; 3936 } 3937 3938 if (htab->elf.sgot) 3939 { 3940 if (htab->elf.sgot->size > 0) 3941 { 3942 /* Set the first entry in the global offset table to the address of 3943 the dynamic section. */ 3944 bfd_vma val = (sdyn ? 3945 sdyn->output_section->vma + sdyn->output_offset : 3946 0); 3947 bfd_put_32 (output_bfd, val, htab->elf.sgot->contents); 3948 } 3949 3950 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize 3951 = GOT_ENTRY_SIZE; 3952 } 3953 3954 return TRUE; 3955} 3956 3957 3958 3959/* Return address for Ith PLT stub in section PLT, for relocation REL 3960 or (bfd_vma) -1 if it should not be included. */ 3961 3962static bfd_vma 3963tilepro_elf_plt_sym_val (bfd_vma i, const asection *plt, 3964 const arelent *rel ATTRIBUTE_UNUSED) 3965{ 3966 return plt->vma + (i + 1) * PLT_ENTRY_SIZE; 3967} 3968 3969static enum elf_reloc_type_class 3970tilepro_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, 3971 const asection *rel_sec ATTRIBUTE_UNUSED, 3972 const Elf_Internal_Rela *rela) 3973{ 3974 switch ((int) ELF32_R_TYPE (rela->r_info)) 3975 { 3976 case R_TILEPRO_RELATIVE: 3977 return reloc_class_relative; 3978 case R_TILEPRO_JMP_SLOT: 3979 return reloc_class_plt; 3980 case R_TILEPRO_COPY: 3981 return reloc_class_copy; 3982 default: 3983 return reloc_class_normal; 3984 } 3985} 3986 3987static int 3988tilepro_additional_program_headers (bfd *abfd, 3989 struct bfd_link_info *info ATTRIBUTE_UNUSED) 3990{ 3991 /* Each .intrpt section specified by the user adds another PT_LOAD 3992 header since the sections are discontiguous. */ 3993 static const char intrpt_sections[4][9] = 3994 { 3995 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3" 3996 }; 3997 int count = 0; 3998 int i; 3999 4000 for (i = 0; i < 4; i++) 4001 { 4002 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]); 4003 if (sec != NULL && (sec->flags & SEC_LOAD) != 0) 4004 ++count; 4005 } 4006 4007 /* Add four "padding" headers in to leave room in case a custom linker 4008 script does something fancy. Otherwise ld complains that it ran 4009 out of program headers and refuses to link. */ 4010 count += 4; 4011 4012 return count; 4013} 4014 4015#define ELF_ARCH bfd_arch_tilepro 4016#define ELF_TARGET_ID TILEPRO_ELF_DATA 4017#define ELF_MACHINE_CODE EM_TILEPRO 4018#define ELF_MAXPAGESIZE 0x10000 4019#define ELF_COMMONPAGESIZE 0x10000 4020 4021#define TARGET_LITTLE_SYM tilepro_elf32_vec 4022#define TARGET_LITTLE_NAME "elf32-tilepro" 4023 4024#define elf_backend_reloc_type_class tilepro_reloc_type_class 4025 4026#define bfd_elf32_bfd_reloc_name_lookup tilepro_reloc_name_lookup 4027#define bfd_elf32_bfd_link_hash_table_create tilepro_elf_link_hash_table_create 4028#define bfd_elf32_bfd_reloc_type_lookup tilepro_reloc_type_lookup 4029 4030#define elf_backend_copy_indirect_symbol tilepro_elf_copy_indirect_symbol 4031#define elf_backend_create_dynamic_sections tilepro_elf_create_dynamic_sections 4032#define elf_backend_check_relocs tilepro_elf_check_relocs 4033#define elf_backend_adjust_dynamic_symbol tilepro_elf_adjust_dynamic_symbol 4034#define elf_backend_omit_section_dynsym tilepro_elf_omit_section_dynsym 4035#define elf_backend_size_dynamic_sections tilepro_elf_size_dynamic_sections 4036#define elf_backend_relocate_section tilepro_elf_relocate_section 4037#define elf_backend_finish_dynamic_symbol tilepro_elf_finish_dynamic_symbol 4038#define elf_backend_finish_dynamic_sections tilepro_elf_finish_dynamic_sections 4039#define elf_backend_gc_mark_hook tilepro_elf_gc_mark_hook 4040#define elf_backend_gc_sweep_hook tilepro_elf_gc_sweep_hook 4041#define elf_backend_plt_sym_val tilepro_elf_plt_sym_val 4042#define elf_info_to_howto_rel NULL 4043#define elf_info_to_howto tilepro_info_to_howto_rela 4044#define elf_backend_grok_prstatus tilepro_elf_grok_prstatus 4045#define elf_backend_grok_psinfo tilepro_elf_grok_psinfo 4046#define elf_backend_additional_program_headers tilepro_additional_program_headers 4047 4048#define bfd_elf32_mkobject tilepro_elf_mkobject 4049 4050#define elf_backend_init_index_section _bfd_elf_init_1_index_section 4051 4052#define elf_backend_can_gc_sections 1 4053#define elf_backend_can_refcount 1 4054#define elf_backend_want_got_plt 1 4055#define elf_backend_plt_readonly 1 4056/* Align PLT mod 64 byte L2 line size. */ 4057#define elf_backend_plt_alignment 6 4058#define elf_backend_want_plt_sym 1 4059#define elf_backend_got_header_size GOT_ENTRY_SIZE 4060#define elf_backend_want_dynrelro 1 4061#define elf_backend_rela_normal 1 4062#define elf_backend_default_execstack 0 4063 4064#include "elf32-target.h" 4065