1 /* TILEPro-specific support for 32-bit ELF. 2 Copyright (C) 2011-2014 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 32 static reloc_howto_type tilepro_elf_howto_table [] = 33 { 34 /* This reloc does nothing. */ 35 HOWTO (R_TILEPRO_NONE, /* type */ 36 0, /* rightshift */ 37 2, /* size (0 = byte, 1 = short, 2 = long) */ 38 32, /* bitsize */ 39 FALSE, /* pc_relative */ 40 0, /* bitpos */ 41 complain_overflow_bitfield, /* 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 }; 524 525 static 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. */ 561 562 typedef struct tilepro_reloc_map 563 { 564 bfd_reloc_code_real_type bfd_reloc_val; 565 unsigned int tilepro_reloc_val; 566 reloc_howto_type * table; 567 } reloc_map; 568 569 static const reloc_map tilepro_reloc_map [] = 570 { 571 #define TH_REMAP(bfd, tilepro) \ 572 { bfd, tilepro, tilepro_elf_howto_table }, 573 574 /* Standard relocations. */ 575 TH_REMAP (BFD_RELOC_NONE, R_TILEPRO_NONE) 576 TH_REMAP (BFD_RELOC_32, R_TILEPRO_32) 577 TH_REMAP (BFD_RELOC_16, R_TILEPRO_16) 578 TH_REMAP (BFD_RELOC_8, R_TILEPRO_8) 579 TH_REMAP (BFD_RELOC_32_PCREL, R_TILEPRO_32_PCREL) 580 TH_REMAP (BFD_RELOC_16_PCREL, R_TILEPRO_16_PCREL) 581 TH_REMAP (BFD_RELOC_8_PCREL, R_TILEPRO_8_PCREL) 582 TH_REMAP (BFD_RELOC_LO16, R_TILEPRO_LO16) 583 TH_REMAP (BFD_RELOC_HI16, R_TILEPRO_HI16) 584 TH_REMAP (BFD_RELOC_HI16_S, R_TILEPRO_HA16) 585 586 /* Custom relocations. */ 587 TH_REMAP (BFD_RELOC_TILEPRO_COPY, R_TILEPRO_COPY) 588 TH_REMAP (BFD_RELOC_TILEPRO_GLOB_DAT, R_TILEPRO_GLOB_DAT) 589 TH_REMAP (BFD_RELOC_TILEPRO_JMP_SLOT, R_TILEPRO_JMP_SLOT) 590 TH_REMAP (BFD_RELOC_TILEPRO_RELATIVE, R_TILEPRO_RELATIVE) 591 TH_REMAP (BFD_RELOC_TILEPRO_BROFF_X1, R_TILEPRO_BROFF_X1) 592 TH_REMAP (BFD_RELOC_TILEPRO_JOFFLONG_X1, R_TILEPRO_JOFFLONG_X1) 593 TH_REMAP (BFD_RELOC_TILEPRO_JOFFLONG_X1_PLT, R_TILEPRO_JOFFLONG_X1_PLT) 594 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X0, R_TILEPRO_IMM8_X0) 595 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y0, R_TILEPRO_IMM8_Y0) 596 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X1, R_TILEPRO_IMM8_X1) 597 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y1, R_TILEPRO_IMM8_Y1) 598 TH_REMAP (BFD_RELOC_TILEPRO_DEST_IMM8_X1, R_TILEPRO_DEST_IMM8_X1) 599 TH_REMAP (BFD_RELOC_TILEPRO_MT_IMM15_X1, R_TILEPRO_MT_IMM15_X1) 600 TH_REMAP (BFD_RELOC_TILEPRO_MF_IMM15_X1, R_TILEPRO_MF_IMM15_X1) 601 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0, R_TILEPRO_IMM16_X0) 602 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1, R_TILEPRO_IMM16_X1) 603 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_LO, R_TILEPRO_IMM16_X0_LO) 604 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_LO, R_TILEPRO_IMM16_X1_LO) 605 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HI, R_TILEPRO_IMM16_X0_HI) 606 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HI, R_TILEPRO_IMM16_X1_HI) 607 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HA, R_TILEPRO_IMM16_X0_HA) 608 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HA, R_TILEPRO_IMM16_X1_HA) 609 610 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_PCREL, R_TILEPRO_IMM16_X0_PCREL) 611 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_PCREL, R_TILEPRO_IMM16_X1_PCREL) 612 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_LO_PCREL, R_TILEPRO_IMM16_X0_LO_PCREL) 613 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_LO_PCREL, R_TILEPRO_IMM16_X1_LO_PCREL) 614 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HI_PCREL, R_TILEPRO_IMM16_X0_HI_PCREL) 615 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HI_PCREL, R_TILEPRO_IMM16_X1_HI_PCREL) 616 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HA_PCREL, R_TILEPRO_IMM16_X0_HA_PCREL) 617 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HA_PCREL, R_TILEPRO_IMM16_X1_HA_PCREL) 618 619 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT, R_TILEPRO_IMM16_X0_GOT) 620 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT, R_TILEPRO_IMM16_X1_GOT) 621 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_LO, R_TILEPRO_IMM16_X0_GOT_LO) 622 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_LO, R_TILEPRO_IMM16_X1_GOT_LO) 623 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_HI, R_TILEPRO_IMM16_X0_GOT_HI) 624 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_HI, R_TILEPRO_IMM16_X1_GOT_HI) 625 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_HA, R_TILEPRO_IMM16_X0_GOT_HA) 626 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_HA, R_TILEPRO_IMM16_X1_GOT_HA) 627 628 TH_REMAP (BFD_RELOC_TILEPRO_MMSTART_X0, R_TILEPRO_MMSTART_X0) 629 TH_REMAP (BFD_RELOC_TILEPRO_MMEND_X0, R_TILEPRO_MMEND_X0) 630 TH_REMAP (BFD_RELOC_TILEPRO_MMSTART_X1, R_TILEPRO_MMSTART_X1) 631 TH_REMAP (BFD_RELOC_TILEPRO_MMEND_X1, R_TILEPRO_MMEND_X1) 632 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_X0, R_TILEPRO_SHAMT_X0) 633 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_X1, R_TILEPRO_SHAMT_X1) 634 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_Y0, R_TILEPRO_SHAMT_Y0) 635 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_Y1, R_TILEPRO_SHAMT_Y1) 636 637 TH_REMAP (BFD_RELOC_TILEPRO_TLS_GD_CALL, R_TILEPRO_TLS_GD_CALL) 638 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X0_TLS_GD_ADD, R_TILEPRO_IMM8_X0_TLS_GD_ADD) 639 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X1_TLS_GD_ADD, R_TILEPRO_IMM8_X1_TLS_GD_ADD) 640 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y0_TLS_GD_ADD, R_TILEPRO_IMM8_Y0_TLS_GD_ADD) 641 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y1_TLS_GD_ADD, R_TILEPRO_IMM8_Y1_TLS_GD_ADD) 642 TH_REMAP (BFD_RELOC_TILEPRO_TLS_IE_LOAD, R_TILEPRO_TLS_IE_LOAD) 643 644 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD, R_TILEPRO_IMM16_X0_TLS_GD) 645 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD, R_TILEPRO_IMM16_X1_TLS_GD) 646 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_LO, R_TILEPRO_IMM16_X0_TLS_GD_LO) 647 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_LO, R_TILEPRO_IMM16_X1_TLS_GD_LO) 648 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_HI, R_TILEPRO_IMM16_X0_TLS_GD_HI) 649 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_HI, R_TILEPRO_IMM16_X1_TLS_GD_HI) 650 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_HA, R_TILEPRO_IMM16_X0_TLS_GD_HA) 651 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_HA, R_TILEPRO_IMM16_X1_TLS_GD_HA) 652 653 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE, R_TILEPRO_IMM16_X0_TLS_IE) 654 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE, R_TILEPRO_IMM16_X1_TLS_IE) 655 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_LO, R_TILEPRO_IMM16_X0_TLS_IE_LO) 656 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_LO, R_TILEPRO_IMM16_X1_TLS_IE_LO) 657 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_HI, R_TILEPRO_IMM16_X0_TLS_IE_HI) 658 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_HI, R_TILEPRO_IMM16_X1_TLS_IE_HI) 659 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_HA, R_TILEPRO_IMM16_X0_TLS_IE_HA) 660 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_HA, R_TILEPRO_IMM16_X1_TLS_IE_HA) 661 662 TH_REMAP (BFD_RELOC_TILEPRO_TLS_DTPMOD32, R_TILEPRO_TLS_DTPMOD32) 663 TH_REMAP (BFD_RELOC_TILEPRO_TLS_DTPOFF32, R_TILEPRO_TLS_DTPOFF32) 664 TH_REMAP (BFD_RELOC_TILEPRO_TLS_TPOFF32, R_TILEPRO_TLS_TPOFF32) 665 666 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE, R_TILEPRO_IMM16_X0_TLS_LE) 667 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE, R_TILEPRO_IMM16_X1_TLS_LE) 668 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_LO, R_TILEPRO_IMM16_X0_TLS_LE_LO) 669 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_LO, R_TILEPRO_IMM16_X1_TLS_LE_LO) 670 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HI, R_TILEPRO_IMM16_X0_TLS_LE_HI) 671 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HI, R_TILEPRO_IMM16_X1_TLS_LE_HI) 672 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HA, R_TILEPRO_IMM16_X0_TLS_LE_HA) 673 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HA, R_TILEPRO_IMM16_X1_TLS_LE_HA) 674 675 #undef TH_REMAP 676 677 { BFD_RELOC_VTABLE_INHERIT, R_TILEPRO_GNU_VTINHERIT, tilepro_elf_howto_table2 }, 678 { BFD_RELOC_VTABLE_ENTRY, R_TILEPRO_GNU_VTENTRY, tilepro_elf_howto_table2 }, 679 }; 680 681 682 683 /* The TILEPro linker needs to keep track of the number of relocs that it 684 decides to copy as dynamic relocs in check_relocs for each symbol. 685 This is so that it can later discard them if they are found to be 686 unnecessary. We store the information in a field extending the 687 regular ELF linker hash table. */ 688 689 struct tilepro_elf_dyn_relocs 690 { 691 struct tilepro_elf_dyn_relocs *next; 692 693 /* The input section of the reloc. */ 694 asection *sec; 695 696 /* Total number of relocs copied for the input section. */ 697 bfd_size_type count; 698 699 /* Number of pc-relative relocs copied for the input section. */ 700 bfd_size_type pc_count; 701 }; 702 703 /* TILEPRO ELF linker hash entry. */ 704 705 struct tilepro_elf_link_hash_entry 706 { 707 struct elf_link_hash_entry elf; 708 709 /* Track dynamic relocs copied for this symbol. */ 710 struct tilepro_elf_dyn_relocs *dyn_relocs; 711 712 #define GOT_UNKNOWN 0 713 #define GOT_NORMAL 1 714 #define GOT_TLS_GD 2 715 #define GOT_TLS_IE 4 716 unsigned char tls_type; 717 }; 718 719 #define tilepro_elf_hash_entry(ent) \ 720 ((struct tilepro_elf_link_hash_entry *)(ent)) 721 722 struct _bfd_tilepro_elf_obj_tdata 723 { 724 struct elf_obj_tdata root; 725 726 /* tls_type for each local got entry. */ 727 char *local_got_tls_type; 728 }; 729 730 #define _bfd_tilepro_elf_tdata(abfd) \ 731 ((struct _bfd_tilepro_elf_obj_tdata *) (abfd)->tdata.any) 732 733 #define _bfd_tilepro_elf_local_got_tls_type(abfd) \ 734 (_bfd_tilepro_elf_tdata (abfd)->local_got_tls_type) 735 736 #define is_tilepro_elf(bfd) \ 737 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ 738 && elf_tdata (bfd) != NULL \ 739 && elf_object_id (bfd) == TILEPRO_ELF_DATA) 740 741 /* Allocate TILEPro ELF private object data. */ 742 743 static bfd_boolean 744 tilepro_elf_mkobject (bfd *abfd) 745 { 746 return bfd_elf_allocate_object (abfd, 747 sizeof (struct _bfd_tilepro_elf_obj_tdata), 748 TILEPRO_ELF_DATA); 749 } 750 751 #include "elf/common.h" 752 #include "elf/internal.h" 753 754 struct tilepro_elf_link_hash_table 755 { 756 struct elf_link_hash_table elf; 757 758 /* Short-cuts to get to dynamic linker sections. */ 759 asection *sdynbss; 760 asection *srelbss; 761 762 /* Small local sym to section mapping cache. */ 763 struct sym_cache sym_cache; 764 }; 765 766 /* Get the Tilepro ELF linker hash table from a link_info structure. */ 767 #define tilepro_elf_hash_table(p) \ 768 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 769 == TILEPRO_ELF_DATA \ 770 ? ((struct tilepro_elf_link_hash_table *) ((p)->hash)) : NULL) 771 772 static reloc_howto_type * 773 tilepro_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, 774 bfd_reloc_code_real_type code) 775 { 776 unsigned int i; 777 778 for (i = ARRAY_SIZE (tilepro_reloc_map); --i;) 779 { 780 const reloc_map * entry; 781 782 entry = tilepro_reloc_map + i; 783 784 if (entry->bfd_reloc_val == code) 785 return entry->table + (entry->tilepro_reloc_val 786 - entry->table[0].type); 787 } 788 789 return NULL; 790 } 791 792 static reloc_howto_type * 793 tilepro_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 794 const char *r_name) 795 { 796 unsigned int i; 797 798 for (i = 0; 799 i < (sizeof (tilepro_elf_howto_table) 800 / sizeof (tilepro_elf_howto_table[0])); 801 i++) 802 if (tilepro_elf_howto_table[i].name != NULL 803 && strcasecmp (tilepro_elf_howto_table[i].name, r_name) == 0) 804 return &tilepro_elf_howto_table[i]; 805 806 return NULL; 807 } 808 809 /* Set the howto pointer for an TILEPro ELF reloc. */ 810 811 static void 812 tilepro_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED, 813 arelent * cache_ptr, 814 Elf_Internal_Rela * dst) 815 { 816 unsigned int r_type = ELF32_R_TYPE (dst->r_info); 817 818 if (r_type <= (unsigned int) R_TILEPRO_IMM16_X1_TLS_LE_HA) 819 cache_ptr->howto = &tilepro_elf_howto_table [r_type]; 820 else if (r_type - R_TILEPRO_GNU_VTINHERIT 821 <= (unsigned int) R_TILEPRO_GNU_VTENTRY) 822 cache_ptr->howto 823 = &tilepro_elf_howto_table2 [r_type - R_TILEPRO_GNU_VTINHERIT]; 824 else 825 abort (); 826 } 827 828 typedef tilepro_bundle_bits (*tilepro_create_func)(int); 829 830 static const tilepro_create_func reloc_to_create_func[] = 831 { 832 /* The first fourteen relocation types don't correspond to operands */ 833 NULL, 834 NULL, 835 NULL, 836 NULL, 837 NULL, 838 NULL, 839 NULL, 840 NULL, 841 NULL, 842 NULL, 843 NULL, 844 NULL, 845 NULL, 846 NULL, 847 848 /* The remaining relocations are used for immediate operands */ 849 create_BrOff_X1, 850 create_JOffLong_X1, 851 create_JOffLong_X1, 852 create_Imm8_X0, 853 create_Imm8_Y0, 854 create_Imm8_X1, 855 create_Imm8_Y1, 856 create_MT_Imm15_X1, 857 create_MF_Imm15_X1, 858 create_Imm16_X0, 859 create_Imm16_X1, 860 create_Imm16_X0, 861 create_Imm16_X1, 862 create_Imm16_X0, 863 create_Imm16_X1, 864 create_Imm16_X0, 865 create_Imm16_X1, 866 create_Imm16_X0, 867 create_Imm16_X1, 868 create_Imm16_X0, 869 create_Imm16_X1, 870 create_Imm16_X0, 871 create_Imm16_X1, 872 create_Imm16_X0, 873 create_Imm16_X1, 874 create_Imm16_X0, 875 create_Imm16_X1, 876 create_Imm16_X0, 877 create_Imm16_X1, 878 create_Imm16_X0, 879 create_Imm16_X1, 880 create_Imm16_X0, 881 create_Imm16_X1, 882 create_MMStart_X0, 883 create_MMEnd_X0, 884 create_MMStart_X1, 885 create_MMEnd_X1, 886 create_ShAmt_X0, 887 create_ShAmt_X1, 888 create_ShAmt_Y0, 889 create_ShAmt_Y1, 890 891 create_Dest_Imm8_X1, 892 NULL, 893 NULL, 894 NULL, 895 NULL, 896 NULL, 897 NULL, 898 NULL, 899 NULL, 900 NULL, 901 NULL, 902 903 create_Imm16_X0, 904 create_Imm16_X1, 905 create_Imm16_X0, 906 create_Imm16_X1, 907 create_Imm16_X0, 908 create_Imm16_X1, 909 create_Imm16_X0, 910 create_Imm16_X1, 911 create_Imm16_X0, 912 create_Imm16_X1, 913 create_Imm16_X0, 914 create_Imm16_X1, 915 create_Imm16_X0, 916 create_Imm16_X1, 917 create_Imm16_X0, 918 create_Imm16_X1, 919 920 NULL, 921 NULL, 922 NULL, 923 924 create_Imm16_X0, 925 create_Imm16_X1, 926 create_Imm16_X0, 927 create_Imm16_X1, 928 create_Imm16_X0, 929 create_Imm16_X1, 930 create_Imm16_X0, 931 create_Imm16_X1, 932 }; 933 934 #define NELEMS(a) ((int) (sizeof (a) / sizeof ((a)[0]))) 935 936 /* Support for core dump NOTE sections. */ 937 938 static bfd_boolean 939 tilepro_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 940 { 941 int offset; 942 size_t size; 943 944 if (note->descsz != TILEPRO_PRSTATUS_SIZEOF) 945 return FALSE; 946 947 /* pr_cursig */ 948 elf_tdata (abfd)->core->signal = 949 bfd_get_16 (abfd, note->descdata + TILEPRO_PRSTATUS_OFFSET_PR_CURSIG); 950 951 /* pr_pid */ 952 elf_tdata (abfd)->core->pid = 953 bfd_get_32 (abfd, note->descdata + TILEPRO_PRSTATUS_OFFSET_PR_PID); 954 955 /* pr_reg */ 956 offset = TILEPRO_PRSTATUS_OFFSET_PR_REG; 957 size = TILEPRO_GREGSET_T_SIZE; 958 959 /* Make a ".reg/999" section. */ 960 return _bfd_elfcore_make_pseudosection (abfd, ".reg", 961 size, note->descpos + offset); 962 } 963 964 static bfd_boolean 965 tilepro_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 966 { 967 if (note->descsz != TILEPRO_PRPSINFO_SIZEOF) 968 return FALSE; 969 970 elf_tdata (abfd)->core->program 971 = _bfd_elfcore_strndup (abfd, 972 note->descdata + TILEPRO_PRPSINFO_OFFSET_PR_FNAME, 973 16); 974 elf_tdata (abfd)->core->command 975 = _bfd_elfcore_strndup (abfd, 976 note->descdata + TILEPRO_PRPSINFO_OFFSET_PR_PSARGS, 977 ELF_PR_PSARGS_SIZE); 978 979 980 /* Note that for some reason, a spurious space is tacked 981 onto the end of the args in some (at least one anyway) 982 implementations, so strip it off if it exists. */ 983 { 984 char *command = elf_tdata (abfd)->core->command; 985 int n = strlen (command); 986 987 if (0 < n && command[n - 1] == ' ') 988 command[n - 1] = '\0'; 989 } 990 991 return TRUE; 992 } 993 994 995 static void 996 tilepro_elf_append_rela_32 (bfd *abfd, asection *s, Elf_Internal_Rela *rel) 997 { 998 Elf32_External_Rela *loc32; 999 1000 loc32 = (Elf32_External_Rela *) s->contents; 1001 loc32 += s->reloc_count++; 1002 bfd_elf32_swap_reloca_out (abfd, rel, (bfd_byte *) loc32); 1003 } 1004 1005 /* PLT/GOT stuff */ 1006 1007 /* The procedure linkage table starts with the following header: 1008 1009 { 1010 rli r29, r29, 16 1011 lwadd r28, r27, 4 1012 } 1013 lw r27, r27 1014 { 1015 info 10 ## SP not offset, return PC in LR 1016 jr r27 1017 } 1018 1019 Subsequent entries are the following, jumping to the header at the end: 1020 1021 lnk r28 1022 1: 1023 { 1024 auli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET> 1025 auli r27, r28, <_GLOBAL_OFFSET_TABLE_ - 1b> 1026 } 1027 { 1028 addli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET> 1029 addli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b> 1030 } 1031 { 1032 auli r29, zero, MY_PLT_INDEX 1033 lw r28, r28 1034 } 1035 { 1036 info 10 ## SP not offset, return PC in LR 1037 jr r28 1038 } 1039 1040 We initially store MY_PLT_INDEX in the high bits so that we can use the all 1041 16 bits as an unsigned offset; if we use the low bits we would get an 1042 unwanted sign extension. The PLT header then rotates the index to get the 1043 right value, before calling the resolution routine. This computation can 1044 fit in unused bundle slots so it's free. 1045 1046 This code sequence lets the code at at the start of the PLT determine 1047 which PLT entry was executed by examining 'r29'. 1048 1049 Note that MY_PLT_INDEX skips over the header entries, so the first 1050 actual jump table entry has index zero. 1051 */ 1052 1053 #define PLT_HEADER_SIZE_IN_BUNDLES 3 1054 #define PLT_ENTRY_SIZE_IN_BUNDLES 5 1055 1056 #define PLT_HEADER_SIZE \ 1057 (PLT_HEADER_SIZE_IN_BUNDLES * TILEPRO_BUNDLE_SIZE_IN_BYTES) 1058 #define PLT_ENTRY_SIZE \ 1059 (PLT_ENTRY_SIZE_IN_BUNDLES * TILEPRO_BUNDLE_SIZE_IN_BYTES) 1060 1061 /* The size in bytes of an entry in the global offset table. */ 1062 1063 #define GOT_ENTRY_SIZE TILEPRO_BYTES_PER_WORD 1064 1065 #define GOTPLT_HEADER_SIZE (2 * GOT_ENTRY_SIZE) 1066 1067 1068 static const bfd_byte 1069 tilepro_plt0_entry[PLT_HEADER_SIZE] = 1070 { 1071 0x5d, 0x07, 0x03, 0x70, 1072 0x6e, 0x23, 0xd0, 0x30, /* { rli r29, r29, 16 ; lwadd r28, r27, 4 } */ 1073 0x00, 0x50, 0xba, 0x6d, 1074 0x00, 0x08, 0x6d, 0xdc, /* { lw r27, r27 } */ 1075 0xff, 0xaf, 0x10, 0x50, 1076 0x60, 0x03, 0x18, 0x08, /* { info 10 ; jr r27 } */ 1077 }; 1078 1079 static const bfd_byte 1080 tilepro_short_plt_entry[PLT_ENTRY_SIZE] = 1081 { 1082 0x00, 0x50, 0x16, 0x70, 1083 0x0e, 0x00, 0x1a, 0x08, /* { lnk r28 } */ 1084 0x1c, 0x07, 0x00, 0xa0, 1085 0x8d, 0x03, 0x00, 0x18, /* { addli r28, r28, 0 ; addli r27, r28, 0 } */ 1086 0xdd, 0x0f, 0x00, 0x30, 1087 0x8e, 0x73, 0x0b, 0x40, /* { auli r29, zero, 0 ; lw r28, r28 } */ 1088 0xff, 0xaf, 0x10, 0x50, 1089 0x80, 0x03, 0x18, 0x08, /* { info 10 ; jr r28 } */ 1090 0x00, 0x00, 0x00, 0x00, 1091 0x00, 0x00, 0x00, 0x00, 1092 }; 1093 1094 static const bfd_byte 1095 tilepro_long_plt_entry[PLT_ENTRY_SIZE] = 1096 { 1097 0x00, 0x50, 0x16, 0x70, 1098 0x0e, 0x00, 0x1a, 0x08, /* { lnk r28 } */ 1099 0x1c, 0x07, 0x00, 0xb0, 1100 0x8d, 0x03, 0x00, 0x20, /* { auli r28, r28, 0 ; auli r27, r28, 0 } */ 1101 0x1c, 0x07, 0x00, 0xa0, 1102 0x6d, 0x03, 0x00, 0x18, /* { addli r28, r28, 0 ; addli r27, r27, 0 } */ 1103 0xdd, 0x0f, 0x00, 0x30, 1104 0x8e, 0x73, 0x0b, 0x40, /* { auli r29, zero, 0 ; lw r28, r28 } */ 1105 0xff, 0xaf, 0x10, 0x50, 1106 0x80, 0x03, 0x18, 0x08, /* { info 10 ; jr r28 } */ 1107 }; 1108 1109 static bfd_vma 1110 tilepro_ha16(bfd_vma vma) 1111 { 1112 return ((vma >> 16) + ((vma >> 15) & 1)) & 0xffff; 1113 } 1114 1115 static int 1116 tilepro_plt_entry_build (asection *splt, asection *sgotplt, bfd_vma offset, 1117 bfd_vma *r_offset) 1118 { 1119 int plt_index = (offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE; 1120 int got_offset = plt_index * GOT_ENTRY_SIZE + GOTPLT_HEADER_SIZE; 1121 tilepro_bundle_bits *pc; 1122 1123 /* Compute the distance from the got entry to the lnk. */ 1124 bfd_signed_vma dist_got_entry = sgotplt->output_section->vma 1125 + sgotplt->output_offset 1126 + got_offset 1127 - splt->output_section->vma 1128 - splt->output_offset 1129 - offset 1130 - TILEPRO_BUNDLE_SIZE_IN_BYTES; 1131 1132 /* Compute the distance to GOTPLT[0]. */ 1133 bfd_signed_vma dist_got0 = dist_got_entry - got_offset; 1134 1135 /* Check whether we can use the short plt entry with 16-bit offset. */ 1136 bfd_boolean short_plt_entry = 1137 (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000); 1138 1139 /* Copy the plt entry template. */ 1140 memcpy (splt->contents + offset, 1141 short_plt_entry ? tilepro_short_plt_entry : tilepro_long_plt_entry, 1142 PLT_ENTRY_SIZE); 1143 1144 /* Write the immediate offsets. */ 1145 pc = (tilepro_bundle_bits *)(splt->contents + offset); 1146 pc++; 1147 1148 if (!short_plt_entry) 1149 { 1150 /* { auli r28, r28, &GOTPLT[MY_GOT_INDEX] ; auli r27, r28, &GOTPLT[0] } */ 1151 *pc++ |= create_Imm16_X0 (tilepro_ha16 (dist_got_entry)) 1152 | create_Imm16_X1 (tilepro_ha16 (dist_got0)); 1153 } 1154 1155 /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; addli r27, r28, &GOTPLT[0] } or 1156 { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; addli r27, r27, &GOTPLT[0] } */ 1157 *pc++ |= create_Imm16_X0 (dist_got_entry) 1158 | create_Imm16_X1 (dist_got0); 1159 1160 /* { auli r29, zero, MY_PLT_INDEX ; lw r28, r28 } */ 1161 *pc |= create_Imm16_X0 (plt_index); 1162 1163 /* Set the relocation offset. */ 1164 *r_offset = got_offset; 1165 1166 return plt_index; 1167 } 1168 1169 #define TILEPRO_ELF_RELA_BYTES (sizeof(Elf32_External_Rela)) 1170 1171 1172 /* Create an entry in an TILEPro ELF linker hash table. */ 1173 1174 static struct bfd_hash_entry * 1175 link_hash_newfunc (struct bfd_hash_entry *entry, 1176 struct bfd_hash_table *table, const char *string) 1177 { 1178 /* Allocate the structure if it has not already been allocated by a 1179 subclass. */ 1180 if (entry == NULL) 1181 { 1182 entry = 1183 bfd_hash_allocate (table, 1184 sizeof (struct tilepro_elf_link_hash_entry)); 1185 if (entry == NULL) 1186 return entry; 1187 } 1188 1189 /* Call the allocation method of the superclass. */ 1190 entry = _bfd_elf_link_hash_newfunc (entry, table, string); 1191 if (entry != NULL) 1192 { 1193 struct tilepro_elf_link_hash_entry *eh; 1194 1195 eh = (struct tilepro_elf_link_hash_entry *) entry; 1196 eh->dyn_relocs = NULL; 1197 eh->tls_type = GOT_UNKNOWN; 1198 } 1199 1200 return entry; 1201 } 1202 1203 /* Create a TILEPRO ELF linker hash table. */ 1204 1205 static struct bfd_link_hash_table * 1206 tilepro_elf_link_hash_table_create (bfd *abfd) 1207 { 1208 struct tilepro_elf_link_hash_table *ret; 1209 bfd_size_type amt = sizeof (struct tilepro_elf_link_hash_table); 1210 1211 ret = (struct tilepro_elf_link_hash_table *) bfd_zmalloc (amt); 1212 if (ret == NULL) 1213 return NULL; 1214 1215 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, 1216 sizeof (struct tilepro_elf_link_hash_entry), 1217 TILEPRO_ELF_DATA)) 1218 { 1219 free (ret); 1220 return NULL; 1221 } 1222 1223 return &ret->elf.root; 1224 } 1225 1226 /* Create the .got section. */ 1227 1228 static bfd_boolean 1229 tilepro_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) 1230 { 1231 flagword flags; 1232 asection *s, *s_got; 1233 struct elf_link_hash_entry *h; 1234 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 1235 struct elf_link_hash_table *htab = elf_hash_table (info); 1236 1237 /* This function may be called more than once. */ 1238 s = bfd_get_linker_section (abfd, ".got"); 1239 if (s != NULL) 1240 return TRUE; 1241 1242 flags = bed->dynamic_sec_flags; 1243 1244 s = bfd_make_section_with_flags (abfd, 1245 (bed->rela_plts_and_copies_p 1246 ? ".rela.got" : ".rel.got"), 1247 (bed->dynamic_sec_flags 1248 | SEC_READONLY)); 1249 if (s == NULL 1250 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 1251 return FALSE; 1252 htab->srelgot = s; 1253 1254 s = s_got = bfd_make_section_with_flags (abfd, ".got", flags); 1255 if (s == NULL 1256 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 1257 return FALSE; 1258 htab->sgot = s; 1259 1260 /* The first bit of the global offset table is the header. */ 1261 s->size += bed->got_header_size; 1262 1263 if (bed->want_got_plt) 1264 { 1265 s = bfd_make_section_with_flags (abfd, ".got.plt", flags); 1266 if (s == NULL 1267 || !bfd_set_section_alignment (abfd, s, 1268 bed->s->log_file_align)) 1269 return FALSE; 1270 htab->sgotplt = s; 1271 1272 /* Reserve room for the header. */ 1273 s->size += GOTPLT_HEADER_SIZE; 1274 } 1275 1276 if (bed->want_got_sym) 1277 { 1278 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got 1279 section. We don't do this in the linker script because we don't want 1280 to define the symbol if we are not creating a global offset 1281 table. */ 1282 h = _bfd_elf_define_linkage_sym (abfd, info, s_got, 1283 "_GLOBAL_OFFSET_TABLE_"); 1284 elf_hash_table (info)->hgot = h; 1285 if (h == NULL) 1286 return FALSE; 1287 } 1288 1289 return TRUE; 1290 } 1291 1292 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and 1293 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our 1294 hash table. */ 1295 1296 static bfd_boolean 1297 tilepro_elf_create_dynamic_sections (bfd *dynobj, 1298 struct bfd_link_info *info) 1299 { 1300 struct tilepro_elf_link_hash_table *htab; 1301 1302 htab = tilepro_elf_hash_table (info); 1303 BFD_ASSERT (htab != NULL); 1304 1305 if (!tilepro_elf_create_got_section (dynobj, info)) 1306 return FALSE; 1307 1308 if (!_bfd_elf_create_dynamic_sections (dynobj, info)) 1309 return FALSE; 1310 1311 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); 1312 if (!info->shared) 1313 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss"); 1314 1315 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss 1316 || (!info->shared && !htab->srelbss)) 1317 abort (); 1318 1319 return TRUE; 1320 } 1321 1322 /* Copy the extra info we tack onto an elf_link_hash_entry. */ 1323 1324 static void 1325 tilepro_elf_copy_indirect_symbol (struct bfd_link_info *info, 1326 struct elf_link_hash_entry *dir, 1327 struct elf_link_hash_entry *ind) 1328 { 1329 struct tilepro_elf_link_hash_entry *edir, *eind; 1330 1331 edir = (struct tilepro_elf_link_hash_entry *) dir; 1332 eind = (struct tilepro_elf_link_hash_entry *) ind; 1333 1334 if (eind->dyn_relocs != NULL) 1335 { 1336 if (edir->dyn_relocs != NULL) 1337 { 1338 struct tilepro_elf_dyn_relocs **pp; 1339 struct tilepro_elf_dyn_relocs *p; 1340 1341 /* Add reloc counts against the indirect sym to the direct sym 1342 list. Merge any entries against the same section. */ 1343 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) 1344 { 1345 struct tilepro_elf_dyn_relocs *q; 1346 1347 for (q = edir->dyn_relocs; q != NULL; q = q->next) 1348 if (q->sec == p->sec) 1349 { 1350 q->pc_count += p->pc_count; 1351 q->count += p->count; 1352 *pp = p->next; 1353 break; 1354 } 1355 if (q == NULL) 1356 pp = &p->next; 1357 } 1358 *pp = edir->dyn_relocs; 1359 } 1360 1361 edir->dyn_relocs = eind->dyn_relocs; 1362 eind->dyn_relocs = NULL; 1363 } 1364 1365 if (ind->root.type == bfd_link_hash_indirect 1366 && dir->got.refcount <= 0) 1367 { 1368 edir->tls_type = eind->tls_type; 1369 eind->tls_type = GOT_UNKNOWN; 1370 } 1371 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 1372 } 1373 1374 static int 1375 tilepro_tls_translate_to_le (int r_type) 1376 { 1377 switch (r_type) 1378 { 1379 case R_TILEPRO_IMM16_X0_TLS_GD: 1380 case R_TILEPRO_IMM16_X0_TLS_IE: 1381 return R_TILEPRO_IMM16_X0_TLS_LE; 1382 1383 case R_TILEPRO_IMM16_X1_TLS_GD: 1384 case R_TILEPRO_IMM16_X1_TLS_IE: 1385 return R_TILEPRO_IMM16_X1_TLS_LE; 1386 1387 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 1388 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 1389 return R_TILEPRO_IMM16_X0_TLS_LE_LO; 1390 1391 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 1392 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 1393 return R_TILEPRO_IMM16_X1_TLS_LE_LO; 1394 1395 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 1396 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 1397 return R_TILEPRO_IMM16_X0_TLS_LE_HI; 1398 1399 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 1400 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 1401 return R_TILEPRO_IMM16_X1_TLS_LE_HI; 1402 1403 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 1404 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 1405 return R_TILEPRO_IMM16_X0_TLS_LE_HA; 1406 1407 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 1408 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 1409 return R_TILEPRO_IMM16_X1_TLS_LE_HA; 1410 } 1411 return r_type; 1412 } 1413 1414 static int 1415 tilepro_tls_translate_to_ie (int r_type) 1416 { 1417 switch (r_type) 1418 { 1419 case R_TILEPRO_IMM16_X0_TLS_GD: 1420 case R_TILEPRO_IMM16_X0_TLS_IE: 1421 return R_TILEPRO_IMM16_X0_TLS_IE; 1422 1423 case R_TILEPRO_IMM16_X1_TLS_GD: 1424 case R_TILEPRO_IMM16_X1_TLS_IE: 1425 return R_TILEPRO_IMM16_X1_TLS_IE; 1426 1427 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 1428 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 1429 return R_TILEPRO_IMM16_X0_TLS_IE_LO; 1430 1431 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 1432 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 1433 return R_TILEPRO_IMM16_X1_TLS_IE_LO; 1434 1435 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 1436 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 1437 return R_TILEPRO_IMM16_X0_TLS_IE_HI; 1438 1439 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 1440 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 1441 return R_TILEPRO_IMM16_X1_TLS_IE_HI; 1442 1443 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 1444 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 1445 return R_TILEPRO_IMM16_X0_TLS_IE_HA; 1446 1447 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 1448 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 1449 return R_TILEPRO_IMM16_X1_TLS_IE_HA; 1450 } 1451 return r_type; 1452 } 1453 1454 static int 1455 tilepro_elf_tls_transition (struct bfd_link_info *info, int r_type, 1456 int is_local) 1457 { 1458 if (info->shared) 1459 return r_type; 1460 1461 if (is_local) 1462 return tilepro_tls_translate_to_le (r_type); 1463 else 1464 return tilepro_tls_translate_to_ie (r_type); 1465 } 1466 1467 /* Look through the relocs for a section during the first phase, and 1468 allocate space in the global offset table or procedure linkage 1469 table. */ 1470 1471 static bfd_boolean 1472 tilepro_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, 1473 asection *sec, const Elf_Internal_Rela *relocs) 1474 { 1475 struct tilepro_elf_link_hash_table *htab; 1476 Elf_Internal_Shdr *symtab_hdr; 1477 struct elf_link_hash_entry **sym_hashes; 1478 const Elf_Internal_Rela *rel; 1479 const Elf_Internal_Rela *rel_end; 1480 asection *sreloc; 1481 int num_relocs; 1482 1483 if (info->relocatable) 1484 return TRUE; 1485 1486 htab = tilepro_elf_hash_table (info); 1487 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 1488 sym_hashes = elf_sym_hashes (abfd); 1489 1490 sreloc = NULL; 1491 1492 num_relocs = sec->reloc_count; 1493 1494 BFD_ASSERT (is_tilepro_elf (abfd) || num_relocs == 0); 1495 1496 if (htab->elf.dynobj == NULL) 1497 htab->elf.dynobj = abfd; 1498 1499 rel_end = relocs + num_relocs; 1500 for (rel = relocs; rel < rel_end; rel++) 1501 { 1502 unsigned int r_type; 1503 unsigned long r_symndx; 1504 struct elf_link_hash_entry *h; 1505 int tls_type; 1506 1507 r_symndx = ELF32_R_SYM (rel->r_info); 1508 r_type = ELF32_R_TYPE (rel->r_info); 1509 1510 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) 1511 { 1512 (*_bfd_error_handler) (_("%B: bad symbol index: %d"), 1513 abfd, r_symndx); 1514 return FALSE; 1515 } 1516 1517 if (r_symndx < symtab_hdr->sh_info) 1518 h = NULL; 1519 else 1520 { 1521 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 1522 while (h->root.type == bfd_link_hash_indirect 1523 || h->root.type == bfd_link_hash_warning) 1524 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1525 1526 /* PR15323, ref flags aren't set for references in the same 1527 object. */ 1528 h->root.non_ir_ref = 1; 1529 } 1530 1531 r_type = tilepro_elf_tls_transition (info, r_type, h == NULL); 1532 switch (r_type) 1533 { 1534 case R_TILEPRO_IMM16_X0_TLS_LE: 1535 case R_TILEPRO_IMM16_X1_TLS_LE: 1536 case R_TILEPRO_IMM16_X0_TLS_LE_LO: 1537 case R_TILEPRO_IMM16_X1_TLS_LE_LO: 1538 case R_TILEPRO_IMM16_X0_TLS_LE_HI: 1539 case R_TILEPRO_IMM16_X1_TLS_LE_HI: 1540 case R_TILEPRO_IMM16_X0_TLS_LE_HA: 1541 case R_TILEPRO_IMM16_X1_TLS_LE_HA: 1542 if (info->shared) 1543 goto r_tilepro_plt32; 1544 break; 1545 1546 case R_TILEPRO_IMM16_X0_TLS_GD: 1547 case R_TILEPRO_IMM16_X1_TLS_GD: 1548 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 1549 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 1550 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 1551 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 1552 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 1553 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 1554 BFD_ASSERT (info->shared); 1555 tls_type = GOT_TLS_GD; 1556 goto have_got_reference; 1557 1558 case R_TILEPRO_IMM16_X0_TLS_IE: 1559 case R_TILEPRO_IMM16_X1_TLS_IE: 1560 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 1561 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 1562 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 1563 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 1564 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 1565 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 1566 tls_type = GOT_TLS_IE; 1567 if (info->shared) 1568 info->flags |= DF_STATIC_TLS; 1569 goto have_got_reference; 1570 1571 case R_TILEPRO_IMM16_X0_GOT: 1572 case R_TILEPRO_IMM16_X1_GOT: 1573 case R_TILEPRO_IMM16_X0_GOT_LO: 1574 case R_TILEPRO_IMM16_X1_GOT_LO: 1575 case R_TILEPRO_IMM16_X0_GOT_HI: 1576 case R_TILEPRO_IMM16_X1_GOT_HI: 1577 case R_TILEPRO_IMM16_X0_GOT_HA: 1578 case R_TILEPRO_IMM16_X1_GOT_HA: 1579 tls_type = GOT_NORMAL; 1580 /* Fall Through */ 1581 1582 have_got_reference: 1583 /* This symbol requires a global offset table entry. */ 1584 { 1585 int old_tls_type; 1586 1587 if (h != NULL) 1588 { 1589 h->got.refcount += 1; 1590 old_tls_type = tilepro_elf_hash_entry(h)->tls_type; 1591 } 1592 else 1593 { 1594 bfd_signed_vma *local_got_refcounts; 1595 1596 /* This is a global offset table entry for a local symbol. */ 1597 local_got_refcounts = elf_local_got_refcounts (abfd); 1598 if (local_got_refcounts == NULL) 1599 { 1600 bfd_size_type size; 1601 1602 size = symtab_hdr->sh_info; 1603 size *= (sizeof (bfd_signed_vma) + sizeof(char)); 1604 local_got_refcounts = ((bfd_signed_vma *) 1605 bfd_zalloc (abfd, size)); 1606 if (local_got_refcounts == NULL) 1607 return FALSE; 1608 elf_local_got_refcounts (abfd) = local_got_refcounts; 1609 _bfd_tilepro_elf_local_got_tls_type (abfd) 1610 = (char *) (local_got_refcounts + symtab_hdr->sh_info); 1611 } 1612 local_got_refcounts[r_symndx] += 1; 1613 old_tls_type = 1614 _bfd_tilepro_elf_local_got_tls_type (abfd) [r_symndx]; 1615 } 1616 1617 /* If a TLS symbol is accessed using IE at least once, 1618 there is no point to use dynamic model for it. */ 1619 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN 1620 && (old_tls_type != GOT_TLS_GD 1621 || tls_type != GOT_TLS_IE)) 1622 { 1623 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD) 1624 tls_type = old_tls_type; 1625 else 1626 { 1627 (*_bfd_error_handler) 1628 (_("%B: `%s' accessed both as normal and thread local symbol"), 1629 abfd, h ? h->root.root.string : "<local>"); 1630 return FALSE; 1631 } 1632 } 1633 1634 if (old_tls_type != tls_type) 1635 { 1636 if (h != NULL) 1637 tilepro_elf_hash_entry (h)->tls_type = tls_type; 1638 else 1639 _bfd_tilepro_elf_local_got_tls_type (abfd) [r_symndx] = 1640 tls_type; 1641 } 1642 } 1643 1644 if (htab->elf.sgot == NULL) 1645 { 1646 if (!tilepro_elf_create_got_section (htab->elf.dynobj, info)) 1647 return FALSE; 1648 } 1649 break; 1650 1651 case R_TILEPRO_TLS_GD_CALL: 1652 if (info->shared) 1653 { 1654 /* These are basically R_TILEPRO_JOFFLONG_X1_PLT relocs 1655 against __tls_get_addr. */ 1656 struct bfd_link_hash_entry *bh = NULL; 1657 if (! _bfd_generic_link_add_one_symbol (info, abfd, 1658 "__tls_get_addr", 0, 1659 bfd_und_section_ptr, 0, 1660 NULL, FALSE, FALSE, 1661 &bh)) 1662 return FALSE; 1663 h = (struct elf_link_hash_entry *) bh; 1664 } 1665 else 1666 break; 1667 /* Fall through */ 1668 1669 case R_TILEPRO_JOFFLONG_X1_PLT: 1670 /* This symbol requires a procedure linkage table entry. We 1671 actually build the entry in adjust_dynamic_symbol, 1672 because this might be a case of linking PIC code without 1673 linking in any dynamic objects, in which case we don't 1674 need to generate a procedure linkage table after all. */ 1675 1676 if (h != NULL) 1677 { 1678 h->needs_plt = 1; 1679 h->plt.refcount += 1; 1680 } 1681 break; 1682 1683 case R_TILEPRO_32_PCREL: 1684 case R_TILEPRO_16_PCREL: 1685 case R_TILEPRO_8_PCREL: 1686 case R_TILEPRO_IMM16_X0_PCREL: 1687 case R_TILEPRO_IMM16_X1_PCREL: 1688 case R_TILEPRO_IMM16_X0_LO_PCREL: 1689 case R_TILEPRO_IMM16_X1_LO_PCREL: 1690 case R_TILEPRO_IMM16_X0_HI_PCREL: 1691 case R_TILEPRO_IMM16_X1_HI_PCREL: 1692 case R_TILEPRO_IMM16_X0_HA_PCREL: 1693 case R_TILEPRO_IMM16_X1_HA_PCREL: 1694 if (h != NULL) 1695 h->non_got_ref = 1; 1696 1697 if (h != NULL 1698 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 1699 break; 1700 /* Fall through. */ 1701 1702 case R_TILEPRO_32: 1703 case R_TILEPRO_16: 1704 case R_TILEPRO_8: 1705 case R_TILEPRO_LO16: 1706 case R_TILEPRO_HI16: 1707 case R_TILEPRO_HA16: 1708 case R_TILEPRO_COPY: 1709 case R_TILEPRO_GLOB_DAT: 1710 case R_TILEPRO_JMP_SLOT: 1711 case R_TILEPRO_RELATIVE: 1712 case R_TILEPRO_BROFF_X1: 1713 case R_TILEPRO_JOFFLONG_X1: 1714 case R_TILEPRO_IMM8_X0: 1715 case R_TILEPRO_IMM8_Y0: 1716 case R_TILEPRO_IMM8_X1: 1717 case R_TILEPRO_IMM8_Y1: 1718 case R_TILEPRO_DEST_IMM8_X1: 1719 case R_TILEPRO_MT_IMM15_X1: 1720 case R_TILEPRO_MF_IMM15_X1: 1721 case R_TILEPRO_IMM16_X0: 1722 case R_TILEPRO_IMM16_X1: 1723 case R_TILEPRO_IMM16_X0_LO: 1724 case R_TILEPRO_IMM16_X1_LO: 1725 case R_TILEPRO_IMM16_X0_HI: 1726 case R_TILEPRO_IMM16_X1_HI: 1727 case R_TILEPRO_IMM16_X0_HA: 1728 case R_TILEPRO_IMM16_X1_HA: 1729 case R_TILEPRO_MMSTART_X0: 1730 case R_TILEPRO_MMEND_X0: 1731 case R_TILEPRO_MMSTART_X1: 1732 case R_TILEPRO_MMEND_X1: 1733 case R_TILEPRO_SHAMT_X0: 1734 case R_TILEPRO_SHAMT_X1: 1735 case R_TILEPRO_SHAMT_Y0: 1736 case R_TILEPRO_SHAMT_Y1: 1737 if (h != NULL) 1738 h->non_got_ref = 1; 1739 1740 r_tilepro_plt32: 1741 if (h != NULL && !info->shared) 1742 { 1743 /* We may need a .plt entry if the function this reloc 1744 refers to is in a shared lib. */ 1745 h->plt.refcount += 1; 1746 } 1747 1748 /* If we are creating a shared library, and this is a reloc 1749 against a global symbol, or a non PC relative reloc 1750 against a local symbol, then we need to copy the reloc 1751 into the shared library. However, if we are linking with 1752 -Bsymbolic, we do not need to copy a reloc against a 1753 global symbol which is defined in an object we are 1754 including in the link (i.e., DEF_REGULAR is set). At 1755 this point we have not seen all the input files, so it is 1756 possible that DEF_REGULAR is not set now but will be set 1757 later (it is never cleared). In case of a weak definition, 1758 DEF_REGULAR may be cleared later by a strong definition in 1759 a shared library. We account for that possibility below by 1760 storing information in the relocs_copied field of the hash 1761 table entry. A similar situation occurs when creating 1762 shared libraries and symbol visibility changes render the 1763 symbol local. 1764 1765 If on the other hand, we are creating an executable, we 1766 may need to keep relocations for symbols satisfied by a 1767 dynamic library if we manage to avoid copy relocs for the 1768 symbol. */ 1769 if ((info->shared 1770 && (sec->flags & SEC_ALLOC) != 0 1771 && (! tilepro_elf_howto_table[r_type].pc_relative 1772 || (h != NULL 1773 && (! info->symbolic 1774 || h->root.type == bfd_link_hash_defweak 1775 || !h->def_regular)))) 1776 || (!info->shared 1777 && (sec->flags & SEC_ALLOC) != 0 1778 && h != NULL 1779 && (h->root.type == bfd_link_hash_defweak 1780 || !h->def_regular))) 1781 { 1782 struct tilepro_elf_dyn_relocs *p; 1783 struct tilepro_elf_dyn_relocs **head; 1784 1785 /* When creating a shared object, we must copy these 1786 relocs into the output file. We create a reloc 1787 section in dynobj and make room for the reloc. */ 1788 if (sreloc == NULL) 1789 { 1790 sreloc = _bfd_elf_make_dynamic_reloc_section 1791 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE); 1792 1793 if (sreloc == NULL) 1794 return FALSE; 1795 } 1796 1797 /* If this is a global symbol, we count the number of 1798 relocations we need for this symbol. */ 1799 if (h != NULL) 1800 head = 1801 &((struct tilepro_elf_link_hash_entry *) h)->dyn_relocs; 1802 else 1803 { 1804 /* Track dynamic relocs needed for local syms too. 1805 We really need local syms available to do this 1806 easily. Oh well. */ 1807 1808 asection *s; 1809 void *vpp; 1810 Elf_Internal_Sym *isym; 1811 1812 isym = bfd_sym_from_r_symndx (&htab->sym_cache, 1813 abfd, r_symndx); 1814 if (isym == NULL) 1815 return FALSE; 1816 1817 s = bfd_section_from_elf_index (abfd, isym->st_shndx); 1818 if (s == NULL) 1819 s = sec; 1820 1821 vpp = &elf_section_data (s)->local_dynrel; 1822 head = (struct tilepro_elf_dyn_relocs **) vpp; 1823 } 1824 1825 p = *head; 1826 if (p == NULL || p->sec != sec) 1827 { 1828 bfd_size_type amt = sizeof *p; 1829 p = ((struct tilepro_elf_dyn_relocs *) 1830 bfd_alloc (htab->elf.dynobj, amt)); 1831 if (p == NULL) 1832 return FALSE; 1833 p->next = *head; 1834 *head = p; 1835 p->sec = sec; 1836 p->count = 0; 1837 p->pc_count = 0; 1838 } 1839 1840 p->count += 1; 1841 if (tilepro_elf_howto_table[r_type].pc_relative) 1842 p->pc_count += 1; 1843 } 1844 1845 break; 1846 1847 case R_TILEPRO_GNU_VTINHERIT: 1848 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 1849 return FALSE; 1850 break; 1851 1852 case R_TILEPRO_GNU_VTENTRY: 1853 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 1854 return FALSE; 1855 break; 1856 1857 default: 1858 break; 1859 } 1860 } 1861 1862 return TRUE; 1863 } 1864 1865 1866 static asection * 1868 tilepro_elf_gc_mark_hook (asection *sec, 1869 struct bfd_link_info *info, 1870 Elf_Internal_Rela *rel, 1871 struct elf_link_hash_entry *h, 1872 Elf_Internal_Sym *sym) 1873 { 1874 if (h != NULL) 1875 { 1876 switch (ELF32_R_TYPE (rel->r_info)) 1877 { 1878 case R_TILEPRO_GNU_VTINHERIT: 1879 case R_TILEPRO_GNU_VTENTRY: 1880 return NULL; 1881 } 1882 } 1883 1884 /* FIXME: The test here, in check_relocs and in relocate_section 1885 dealing with TLS optimization, ought to be !info->executable. */ 1886 if (info->shared) 1887 { 1888 switch (ELF32_R_TYPE (rel->r_info)) 1889 { 1890 case R_TILEPRO_TLS_GD_CALL: 1891 /* This reloc implicitly references __tls_get_addr. We know 1892 another reloc will reference the same symbol as the one 1893 on this reloc, so the real symbol and section will be 1894 gc marked when processing the other reloc. That lets 1895 us handle __tls_get_addr here. */ 1896 h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr", 1897 FALSE, FALSE, TRUE); 1898 BFD_ASSERT (h != NULL); 1899 h->mark = 1; 1900 if (h->u.weakdef != NULL) 1901 h->u.weakdef->mark = 1; 1902 sym = NULL; 1903 } 1904 } 1905 1906 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 1907 } 1908 1909 /* Update the got entry reference counts for the section being removed. */ 1910 static bfd_boolean 1911 tilepro_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, 1912 asection *sec, const Elf_Internal_Rela *relocs) 1913 { 1914 struct tilepro_elf_link_hash_table *htab; 1915 Elf_Internal_Shdr *symtab_hdr; 1916 struct elf_link_hash_entry **sym_hashes; 1917 bfd_signed_vma *local_got_refcounts; 1918 const Elf_Internal_Rela *rel, *relend; 1919 1920 if (info->relocatable) 1921 return TRUE; 1922 1923 BFD_ASSERT (is_tilepro_elf (abfd) || sec->reloc_count == 0); 1924 1925 elf_section_data (sec)->local_dynrel = NULL; 1926 1927 htab = tilepro_elf_hash_table (info); 1928 BFD_ASSERT (htab != NULL); 1929 symtab_hdr = &elf_symtab_hdr (abfd); 1930 sym_hashes = elf_sym_hashes (abfd); 1931 local_got_refcounts = elf_local_got_refcounts (abfd); 1932 1933 relend = relocs + sec->reloc_count; 1934 for (rel = relocs; rel < relend; rel++) 1935 { 1936 unsigned long r_symndx; 1937 unsigned int r_type; 1938 struct elf_link_hash_entry *h = NULL; 1939 1940 r_symndx = ELF32_R_SYM (rel->r_info); 1941 if (r_symndx >= symtab_hdr->sh_info) 1942 { 1943 struct tilepro_elf_link_hash_entry *eh; 1944 struct tilepro_elf_dyn_relocs **pp; 1945 struct tilepro_elf_dyn_relocs *p; 1946 1947 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 1948 while (h->root.type == bfd_link_hash_indirect 1949 || h->root.type == bfd_link_hash_warning) 1950 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1951 eh = (struct tilepro_elf_link_hash_entry *) h; 1952 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) 1953 if (p->sec == sec) 1954 { 1955 /* Everything must go for SEC. */ 1956 *pp = p->next; 1957 break; 1958 } 1959 } 1960 1961 r_type = ELF32_R_TYPE (rel->r_info); 1962 r_type = tilepro_elf_tls_transition (info, r_type, h != NULL); 1963 switch (r_type) 1964 { 1965 case R_TILEPRO_IMM16_X0_GOT: 1966 case R_TILEPRO_IMM16_X1_GOT: 1967 case R_TILEPRO_IMM16_X0_GOT_LO: 1968 case R_TILEPRO_IMM16_X1_GOT_LO: 1969 case R_TILEPRO_IMM16_X0_GOT_HI: 1970 case R_TILEPRO_IMM16_X1_GOT_HI: 1971 case R_TILEPRO_IMM16_X0_GOT_HA: 1972 case R_TILEPRO_IMM16_X1_GOT_HA: 1973 case R_TILEPRO_IMM16_X0_TLS_GD: 1974 case R_TILEPRO_IMM16_X1_TLS_GD: 1975 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 1976 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 1977 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 1978 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 1979 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 1980 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 1981 case R_TILEPRO_IMM16_X0_TLS_IE: 1982 case R_TILEPRO_IMM16_X1_TLS_IE: 1983 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 1984 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 1985 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 1986 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 1987 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 1988 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 1989 if (h != NULL) 1990 { 1991 if (h->got.refcount > 0) 1992 h->got.refcount--; 1993 } 1994 else 1995 { 1996 if (local_got_refcounts && 1997 local_got_refcounts[r_symndx] > 0) 1998 local_got_refcounts[r_symndx]--; 1999 } 2000 break; 2001 2002 case R_TILEPRO_32_PCREL: 2003 case R_TILEPRO_16_PCREL: 2004 case R_TILEPRO_8_PCREL: 2005 case R_TILEPRO_IMM16_X0_PCREL: 2006 case R_TILEPRO_IMM16_X1_PCREL: 2007 case R_TILEPRO_IMM16_X0_LO_PCREL: 2008 case R_TILEPRO_IMM16_X1_LO_PCREL: 2009 case R_TILEPRO_IMM16_X0_HI_PCREL: 2010 case R_TILEPRO_IMM16_X1_HI_PCREL: 2011 case R_TILEPRO_IMM16_X0_HA_PCREL: 2012 case R_TILEPRO_IMM16_X1_HA_PCREL: 2013 if (h != NULL 2014 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 2015 break; 2016 /* Fall through. */ 2017 2018 case R_TILEPRO_32: 2019 case R_TILEPRO_16: 2020 case R_TILEPRO_8: 2021 case R_TILEPRO_LO16: 2022 case R_TILEPRO_HI16: 2023 case R_TILEPRO_HA16: 2024 case R_TILEPRO_COPY: 2025 case R_TILEPRO_GLOB_DAT: 2026 case R_TILEPRO_JMP_SLOT: 2027 case R_TILEPRO_RELATIVE: 2028 case R_TILEPRO_BROFF_X1: 2029 case R_TILEPRO_JOFFLONG_X1: 2030 case R_TILEPRO_IMM8_X0: 2031 case R_TILEPRO_IMM8_Y0: 2032 case R_TILEPRO_IMM8_X1: 2033 case R_TILEPRO_IMM8_Y1: 2034 case R_TILEPRO_DEST_IMM8_X1: 2035 case R_TILEPRO_MT_IMM15_X1: 2036 case R_TILEPRO_MF_IMM15_X1: 2037 case R_TILEPRO_IMM16_X0: 2038 case R_TILEPRO_IMM16_X1: 2039 case R_TILEPRO_IMM16_X0_LO: 2040 case R_TILEPRO_IMM16_X1_LO: 2041 case R_TILEPRO_IMM16_X0_HI: 2042 case R_TILEPRO_IMM16_X1_HI: 2043 case R_TILEPRO_IMM16_X0_HA: 2044 case R_TILEPRO_IMM16_X1_HA: 2045 case R_TILEPRO_MMSTART_X0: 2046 case R_TILEPRO_MMEND_X0: 2047 case R_TILEPRO_MMSTART_X1: 2048 case R_TILEPRO_MMEND_X1: 2049 case R_TILEPRO_SHAMT_X0: 2050 case R_TILEPRO_SHAMT_X1: 2051 case R_TILEPRO_SHAMT_Y0: 2052 case R_TILEPRO_SHAMT_Y1: 2053 if (info->shared) 2054 break; 2055 /* Fall through. */ 2056 2057 case R_TILEPRO_JOFFLONG_X1_PLT: 2058 if (h != NULL) 2059 { 2060 if (h->plt.refcount > 0) 2061 h->plt.refcount--; 2062 } 2063 break; 2064 2065 default: 2066 break; 2067 } 2068 } 2069 2070 return TRUE; 2071 } 2072 2073 /* Adjust a symbol defined by a dynamic object and referenced by a 2074 regular object. The current definition is in some section of the 2075 dynamic object, but we're not including those sections. We have to 2076 change the definition to something the rest of the link can 2077 understand. */ 2078 2079 static bfd_boolean 2080 tilepro_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 2081 struct elf_link_hash_entry *h) 2082 { 2083 struct tilepro_elf_link_hash_table *htab; 2084 struct tilepro_elf_link_hash_entry * eh; 2085 struct tilepro_elf_dyn_relocs *p; 2086 asection *s; 2087 2088 htab = tilepro_elf_hash_table (info); 2089 BFD_ASSERT (htab != NULL); 2090 2091 /* Make sure we know what is going on here. */ 2092 BFD_ASSERT (htab->elf.dynobj != NULL 2093 && (h->needs_plt 2094 || h->u.weakdef != NULL 2095 || (h->def_dynamic 2096 && h->ref_regular 2097 && !h->def_regular))); 2098 2099 /* If this is a function, put it in the procedure linkage table. We 2100 will fill in the contents of the procedure linkage table later 2101 (although we could actually do it here). */ 2102 if (h->type == STT_FUNC || h->needs_plt) 2103 { 2104 if (h->plt.refcount <= 0 2105 || SYMBOL_CALLS_LOCAL (info, h) 2106 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT 2107 && h->root.type == bfd_link_hash_undefweak)) 2108 { 2109 /* This case can occur if we saw a R_TILEPRO_JOFFLONG_X1_PLT 2110 reloc in an input file, but the symbol was never referred 2111 to by a dynamic object, or if all references were garbage 2112 collected. In such a case, we don't actually need to build 2113 a procedure linkage table, and we can just do a 2114 R_TILEPRO_JOFFLONG_X1 relocation instead. */ 2115 h->plt.offset = (bfd_vma) -1; 2116 h->needs_plt = 0; 2117 } 2118 2119 return TRUE; 2120 } 2121 else 2122 h->plt.offset = (bfd_vma) -1; 2123 2124 /* If this is a weak symbol, and there is a real definition, the 2125 processor independent code will have arranged for us to see the 2126 real definition first, and we can just use the same value. */ 2127 if (h->u.weakdef != NULL) 2128 { 2129 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 2130 || h->u.weakdef->root.type == bfd_link_hash_defweak); 2131 h->root.u.def.section = h->u.weakdef->root.u.def.section; 2132 h->root.u.def.value = h->u.weakdef->root.u.def.value; 2133 return TRUE; 2134 } 2135 2136 /* This is a reference to a symbol defined by a dynamic object which 2137 is not a function. */ 2138 2139 /* If we are creating a shared library, we must presume that the 2140 only references to the symbol are via the global offset table. 2141 For such cases we need not do anything here; the relocations will 2142 be handled correctly by relocate_section. */ 2143 if (info->shared) 2144 return TRUE; 2145 2146 /* If there are no references to this symbol that do not use the 2147 GOT, we don't need to generate a copy reloc. */ 2148 if (!h->non_got_ref) 2149 return TRUE; 2150 2151 /* If -z nocopyreloc was given, we won't generate them either. */ 2152 if (info->nocopyreloc) 2153 { 2154 h->non_got_ref = 0; 2155 return TRUE; 2156 } 2157 2158 eh = (struct tilepro_elf_link_hash_entry *) h; 2159 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2160 { 2161 s = p->sec->output_section; 2162 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2163 break; 2164 } 2165 2166 /* If we didn't find any dynamic relocs in read-only sections, then 2167 we'll be keeping the dynamic relocs and avoiding the copy reloc. */ 2168 if (p == NULL) 2169 { 2170 h->non_got_ref = 0; 2171 return TRUE; 2172 } 2173 2174 /* We must allocate the symbol in our .dynbss section, which will 2175 become part of the .bss section of the executable. There will be 2176 an entry for this symbol in the .dynsym section. The dynamic 2177 object will contain position independent code, so all references 2178 from the dynamic object to this symbol will go through the global 2179 offset table. The dynamic linker will use the .dynsym entry to 2180 determine the address it must put in the global offset table, so 2181 both the dynamic object and the regular object will refer to the 2182 same memory location for the variable. */ 2183 2184 /* We must generate a R_TILEPRO_COPY reloc to tell the dynamic linker 2185 to copy the initial value out of the dynamic object and into the 2186 runtime process image. We need to remember the offset into the 2187 .rel.bss section we are going to use. */ 2188 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) 2189 { 2190 htab->srelbss->size += TILEPRO_ELF_RELA_BYTES; 2191 h->needs_copy = 1; 2192 } 2193 2194 return _bfd_elf_adjust_dynamic_copy (h, htab->sdynbss); 2195 } 2196 2197 /* Allocate space in .plt, .got and associated reloc sections for 2198 dynamic relocs. */ 2199 2200 static bfd_boolean 2201 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) 2202 { 2203 struct bfd_link_info *info; 2204 struct tilepro_elf_link_hash_table *htab; 2205 struct tilepro_elf_link_hash_entry *eh; 2206 struct tilepro_elf_dyn_relocs *p; 2207 2208 if (h->root.type == bfd_link_hash_indirect) 2209 return TRUE; 2210 2211 info = (struct bfd_link_info *) inf; 2212 htab = tilepro_elf_hash_table (info); 2213 BFD_ASSERT (htab != NULL); 2214 2215 if (htab->elf.dynamic_sections_created 2216 && h->plt.refcount > 0) 2217 { 2218 /* Make sure this symbol is output as a dynamic symbol. 2219 Undefined weak syms won't yet be marked as dynamic. */ 2220 if (h->dynindx == -1 2221 && !h->forced_local) 2222 { 2223 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2224 return FALSE; 2225 } 2226 2227 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) 2228 { 2229 asection *s = htab->elf.splt; 2230 2231 /* Allocate room for the header. */ 2232 if (s->size == 0) 2233 { 2234 s->size = PLT_ENTRY_SIZE; 2235 } 2236 2237 h->plt.offset = s->size; 2238 2239 /* If this symbol is not defined in a regular file, and we are 2240 not generating a shared library, then set the symbol to this 2241 location in the .plt. This is required to make function 2242 pointers compare as equal between the normal executable and 2243 the shared library. */ 2244 if (! info->shared 2245 && !h->def_regular) 2246 { 2247 h->root.u.def.section = s; 2248 h->root.u.def.value = h->plt.offset; 2249 } 2250 2251 /* Make room for this entry. */ 2252 s->size += PLT_ENTRY_SIZE; 2253 2254 /* We also need to make an entry in the .got.plt section. */ 2255 htab->elf.sgotplt->size += GOT_ENTRY_SIZE; 2256 2257 /* We also need to make an entry in the .rela.plt section. */ 2258 htab->elf.srelplt->size += TILEPRO_ELF_RELA_BYTES; 2259 } 2260 else 2261 { 2262 h->plt.offset = (bfd_vma) -1; 2263 h->needs_plt = 0; 2264 } 2265 } 2266 else 2267 { 2268 h->plt.offset = (bfd_vma) -1; 2269 h->needs_plt = 0; 2270 } 2271 2272 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE 2273 requiring no TLS entry. */ 2274 if (h->got.refcount > 0 2275 && !info->shared 2276 && h->dynindx == -1 2277 && tilepro_elf_hash_entry(h)->tls_type == GOT_TLS_IE) 2278 h->got.offset = (bfd_vma) -1; 2279 else if (h->got.refcount > 0) 2280 { 2281 asection *s; 2282 bfd_boolean dyn; 2283 int tls_type = tilepro_elf_hash_entry(h)->tls_type; 2284 2285 /* Make sure this symbol is output as a dynamic symbol. 2286 Undefined weak syms won't yet be marked as dynamic. */ 2287 if (h->dynindx == -1 2288 && !h->forced_local) 2289 { 2290 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2291 return FALSE; 2292 } 2293 2294 s = htab->elf.sgot; 2295 h->got.offset = s->size; 2296 s->size += TILEPRO_BYTES_PER_WORD; 2297 /* R_TILEPRO_IMM16_Xn_TLS_GD entries need 2 consecutive GOT slots. */ 2298 if (tls_type == GOT_TLS_GD) 2299 s->size += TILEPRO_BYTES_PER_WORD; 2300 dyn = htab->elf.dynamic_sections_created; 2301 /* R_TILEPRO_IMM16_Xn_TLS_IE_xxx needs one dynamic relocation, 2302 R_TILEPRO_IMM16_Xn_TLS_GD_xxx needs two if local symbol and two if 2303 global. */ 2304 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE) 2305 htab->elf.srelgot->size += 2 * TILEPRO_ELF_RELA_BYTES; 2306 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)) 2307 htab->elf.srelgot->size += TILEPRO_ELF_RELA_BYTES; 2308 } 2309 else 2310 h->got.offset = (bfd_vma) -1; 2311 2312 eh = (struct tilepro_elf_link_hash_entry *) h; 2313 if (eh->dyn_relocs == NULL) 2314 return TRUE; 2315 2316 /* In the shared -Bsymbolic case, discard space allocated for 2317 dynamic pc-relative relocs against symbols which turn out to be 2318 defined in regular objects. For the normal shared case, discard 2319 space for pc-relative relocs that have become local due to symbol 2320 visibility changes. */ 2321 2322 if (info->shared) 2323 { 2324 if (SYMBOL_CALLS_LOCAL (info, h)) 2325 { 2326 struct tilepro_elf_dyn_relocs **pp; 2327 2328 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) 2329 { 2330 p->count -= p->pc_count; 2331 p->pc_count = 0; 2332 if (p->count == 0) 2333 *pp = p->next; 2334 else 2335 pp = &p->next; 2336 } 2337 } 2338 2339 /* Also discard relocs on undefined weak syms with non-default 2340 visibility. */ 2341 if (eh->dyn_relocs != NULL 2342 && h->root.type == bfd_link_hash_undefweak) 2343 { 2344 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) 2345 eh->dyn_relocs = NULL; 2346 2347 /* Make sure undefined weak symbols are output as a dynamic 2348 symbol in PIEs. */ 2349 else if (h->dynindx == -1 2350 && !h->forced_local) 2351 { 2352 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2353 return FALSE; 2354 } 2355 } 2356 } 2357 else 2358 { 2359 /* For the non-shared case, discard space for relocs against 2360 symbols which turn out to need copy relocs or are not 2361 dynamic. */ 2362 2363 if (!h->non_got_ref 2364 && ((h->def_dynamic 2365 && !h->def_regular) 2366 || (htab->elf.dynamic_sections_created 2367 && (h->root.type == bfd_link_hash_undefweak 2368 || h->root.type == bfd_link_hash_undefined)))) 2369 { 2370 /* Make sure this symbol is output as a dynamic symbol. 2371 Undefined weak syms won't yet be marked as dynamic. */ 2372 if (h->dynindx == -1 2373 && !h->forced_local) 2374 { 2375 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2376 return FALSE; 2377 } 2378 2379 /* If that succeeded, we know we'll be keeping all the 2380 relocs. */ 2381 if (h->dynindx != -1) 2382 goto keep; 2383 } 2384 2385 eh->dyn_relocs = NULL; 2386 2387 keep: ; 2388 } 2389 2390 /* Finally, allocate space. */ 2391 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2392 { 2393 asection *sreloc = elf_section_data (p->sec)->sreloc; 2394 sreloc->size += p->count * TILEPRO_ELF_RELA_BYTES; 2395 } 2396 2397 return TRUE; 2398 } 2399 2400 /* Find any dynamic relocs that apply to read-only sections. */ 2401 2402 static bfd_boolean 2403 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) 2404 { 2405 struct tilepro_elf_link_hash_entry *eh; 2406 struct tilepro_elf_dyn_relocs *p; 2407 2408 eh = (struct tilepro_elf_link_hash_entry *) h; 2409 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2410 { 2411 asection *s = p->sec->output_section; 2412 2413 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2414 { 2415 struct bfd_link_info *info = (struct bfd_link_info *) inf; 2416 2417 info->flags |= DF_TEXTREL; 2418 2419 /* Not an error, just cut short the traversal. */ 2420 return FALSE; 2421 } 2422 } 2423 return TRUE; 2424 } 2425 2426 /* Return true if the dynamic symbol for a given section should be 2427 omitted when creating a shared library. */ 2428 2429 static bfd_boolean 2430 tilepro_elf_omit_section_dynsym (bfd *output_bfd, 2431 struct bfd_link_info *info, 2432 asection *p) 2433 { 2434 /* We keep the .got section symbol so that explicit relocations 2435 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode 2436 can be turned into relocations against the .got symbol. */ 2437 if (strcmp (p->name, ".got") == 0) 2438 return FALSE; 2439 2440 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p); 2441 } 2442 2443 /* Set the sizes of the dynamic sections. */ 2444 2445 #define ELF32_DYNAMIC_INTERPRETER "/lib/ld.so.1" 2446 2447 static bfd_boolean 2448 tilepro_elf_size_dynamic_sections (bfd *output_bfd, 2449 struct bfd_link_info *info) 2450 { 2451 (void)output_bfd; 2452 2453 struct tilepro_elf_link_hash_table *htab; 2454 bfd *dynobj; 2455 asection *s; 2456 bfd *ibfd; 2457 2458 htab = tilepro_elf_hash_table (info); 2459 BFD_ASSERT (htab != NULL); 2460 dynobj = htab->elf.dynobj; 2461 BFD_ASSERT (dynobj != NULL); 2462 2463 if (elf_hash_table (info)->dynamic_sections_created) 2464 { 2465 /* Set the contents of the .interp section to the interpreter. */ 2466 if (info->executable) 2467 { 2468 s = bfd_get_linker_section (dynobj, ".interp"); 2469 BFD_ASSERT (s != NULL); 2470 s->size = sizeof ELF32_DYNAMIC_INTERPRETER; 2471 s->contents = (unsigned char *) ELF32_DYNAMIC_INTERPRETER; 2472 } 2473 } 2474 2475 /* Set up .got offsets for local syms, and space for local dynamic 2476 relocs. */ 2477 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) 2478 { 2479 bfd_signed_vma *local_got; 2480 bfd_signed_vma *end_local_got; 2481 char *local_tls_type; 2482 bfd_size_type locsymcount; 2483 Elf_Internal_Shdr *symtab_hdr; 2484 asection *srel; 2485 2486 if (! is_tilepro_elf (ibfd)) 2487 continue; 2488 2489 for (s = ibfd->sections; s != NULL; s = s->next) 2490 { 2491 struct tilepro_elf_dyn_relocs *p; 2492 2493 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) 2494 { 2495 if (!bfd_is_abs_section (p->sec) 2496 && bfd_is_abs_section (p->sec->output_section)) 2497 { 2498 /* Input section has been discarded, either because 2499 it is a copy of a linkonce section or due to 2500 linker script /DISCARD/, so we'll be discarding 2501 the relocs too. */ 2502 } 2503 else if (p->count != 0) 2504 { 2505 srel = elf_section_data (p->sec)->sreloc; 2506 srel->size += p->count * TILEPRO_ELF_RELA_BYTES; 2507 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 2508 info->flags |= DF_TEXTREL; 2509 } 2510 } 2511 } 2512 2513 local_got = elf_local_got_refcounts (ibfd); 2514 if (!local_got) 2515 continue; 2516 2517 symtab_hdr = &elf_symtab_hdr (ibfd); 2518 locsymcount = symtab_hdr->sh_info; 2519 end_local_got = local_got + locsymcount; 2520 local_tls_type = _bfd_tilepro_elf_local_got_tls_type (ibfd); 2521 s = htab->elf.sgot; 2522 srel = htab->elf.srelgot; 2523 for (; local_got < end_local_got; ++local_got, ++local_tls_type) 2524 { 2525 if (*local_got > 0) 2526 { 2527 *local_got = s->size; 2528 s->size += TILEPRO_BYTES_PER_WORD; 2529 if (*local_tls_type == GOT_TLS_GD) 2530 s->size += TILEPRO_BYTES_PER_WORD; 2531 if (info->shared 2532 || *local_tls_type == GOT_TLS_GD 2533 || *local_tls_type == GOT_TLS_IE) 2534 srel->size += TILEPRO_ELF_RELA_BYTES; 2535 } 2536 else 2537 *local_got = (bfd_vma) -1; 2538 } 2539 } 2540 2541 /* Allocate global sym .plt and .got entries, and space for global 2542 sym dynamic relocs. */ 2543 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); 2544 2545 if (elf_hash_table (info)->dynamic_sections_created) 2546 { 2547 /* If the .got section is more than 0x8000 bytes, we add 2548 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16 2549 bit relocations have a greater chance of working. */ 2550 if (htab->elf.sgot->size >= 0x8000 2551 && elf_hash_table (info)->hgot->root.u.def.value == 0) 2552 elf_hash_table (info)->hgot->root.u.def.value = 0x8000; 2553 } 2554 2555 if (htab->elf.sgotplt) 2556 { 2557 struct elf_link_hash_entry *got; 2558 got = elf_link_hash_lookup (elf_hash_table (info), 2559 "_GLOBAL_OFFSET_TABLE_", 2560 FALSE, FALSE, FALSE); 2561 2562 /* Don't allocate .got.plt section if there are no GOT nor PLT 2563 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */ 2564 if ((got == NULL 2565 || !got->ref_regular_nonweak) 2566 && (htab->elf.sgotplt->size 2567 == GOTPLT_HEADER_SIZE) 2568 && (htab->elf.splt == NULL 2569 || htab->elf.splt->size == 0) 2570 && (htab->elf.sgot == NULL 2571 || (htab->elf.sgot->size 2572 == get_elf_backend_data (output_bfd)->got_header_size))) 2573 htab->elf.sgotplt->size = 0; 2574 } 2575 2576 /* The check_relocs and adjust_dynamic_symbol entry points have 2577 determined the sizes of the various dynamic sections. Allocate 2578 memory for them. */ 2579 for (s = dynobj->sections; s != NULL; s = s->next) 2580 { 2581 if ((s->flags & SEC_LINKER_CREATED) == 0) 2582 continue; 2583 2584 if (s == htab->elf.splt 2585 || s == htab->elf.sgot 2586 || s == htab->elf.sgotplt 2587 || s == htab->sdynbss) 2588 { 2589 /* Strip this section if we don't need it; see the 2590 comment below. */ 2591 } 2592 else if (strncmp (s->name, ".rela", 5) == 0) 2593 { 2594 if (s->size != 0) 2595 { 2596 /* We use the reloc_count field as a counter if we need 2597 to copy relocs into the output file. */ 2598 s->reloc_count = 0; 2599 } 2600 } 2601 else 2602 { 2603 /* It's not one of our sections. */ 2604 continue; 2605 } 2606 2607 if (s->size == 0) 2608 { 2609 /* If we don't need this section, strip it from the 2610 output file. This is mostly to handle .rela.bss and 2611 .rela.plt. We must create both sections in 2612 create_dynamic_sections, because they must be created 2613 before the linker maps input sections to output 2614 sections. The linker does that before 2615 adjust_dynamic_symbol is called, and it is that 2616 function which decides whether anything needs to go 2617 into these sections. */ 2618 s->flags |= SEC_EXCLUDE; 2619 continue; 2620 } 2621 2622 if ((s->flags & SEC_HAS_CONTENTS) == 0) 2623 continue; 2624 2625 /* Allocate memory for the section contents. Zero the memory 2626 for the benefit of .rela.plt, which has 4 unused entries 2627 at the beginning, and we don't want garbage. */ 2628 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); 2629 if (s->contents == NULL) 2630 return FALSE; 2631 } 2632 2633 if (elf_hash_table (info)->dynamic_sections_created) 2634 { 2635 /* Add some entries to the .dynamic section. We fill in the 2636 values later, in tilepro_elf_finish_dynamic_sections, but we 2637 must add the entries now so that we get the correct size for 2638 the .dynamic section. The DT_DEBUG entry is filled in by the 2639 dynamic linker and used by the debugger. */ 2640 #define add_dynamic_entry(TAG, VAL) \ 2641 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 2642 2643 if (info->executable) 2644 { 2645 if (!add_dynamic_entry (DT_DEBUG, 0)) 2646 return FALSE; 2647 } 2648 2649 if (htab->elf.srelplt->size != 0) 2650 { 2651 if (!add_dynamic_entry (DT_PLTGOT, 0) 2652 || !add_dynamic_entry (DT_PLTRELSZ, 0) 2653 || !add_dynamic_entry (DT_PLTREL, DT_RELA) 2654 || !add_dynamic_entry (DT_JMPREL, 0)) 2655 return FALSE; 2656 } 2657 2658 if (!add_dynamic_entry (DT_RELA, 0) 2659 || !add_dynamic_entry (DT_RELASZ, 0) 2660 || !add_dynamic_entry (DT_RELAENT, TILEPRO_ELF_RELA_BYTES)) 2661 return FALSE; 2662 2663 /* If any dynamic relocs apply to a read-only section, 2664 then we need a DT_TEXTREL entry. */ 2665 if ((info->flags & DF_TEXTREL) == 0) 2666 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); 2667 2668 if (info->flags & DF_TEXTREL) 2669 { 2670 if (!add_dynamic_entry (DT_TEXTREL, 0)) 2671 return FALSE; 2672 } 2673 } 2674 #undef add_dynamic_entry 2675 2676 return TRUE; 2677 } 2678 2679 /* Return the base VMA address which should be subtracted from real addresses 2681 when resolving @dtpoff relocation. 2682 This is PT_TLS segment p_vaddr. */ 2683 2684 static bfd_vma 2685 dtpoff_base (struct bfd_link_info *info) 2686 { 2687 /* If tls_sec is NULL, we should have signalled an error already. */ 2688 if (elf_hash_table (info)->tls_sec == NULL) 2689 return 0; 2690 return elf_hash_table (info)->tls_sec->vma; 2691 } 2692 2693 /* Return the relocation value for R_TILEPRO_TLS_TPOFF32. */ 2694 2695 static bfd_vma 2696 tpoff (struct bfd_link_info *info, bfd_vma address) 2697 { 2698 struct elf_link_hash_table *htab = elf_hash_table (info); 2699 2700 /* If tls_sec is NULL, we should have signalled an error already. */ 2701 if (htab->tls_sec == NULL) 2702 return 0; 2703 2704 return (address - htab->tls_sec->vma); 2705 } 2706 2707 /* Replace the MASK bits in ADDR with those in INSN, for the next 2708 TILEPRO_BUNDLE_SIZE_IN_BYTES bytes. */ 2709 2710 static void 2711 tilepro_replace_insn (bfd_byte *addr, const bfd_byte *mask, 2712 const bfd_byte *insn) 2713 { 2714 int i; 2715 for (i = 0; i < TILEPRO_BUNDLE_SIZE_IN_BYTES; i++) 2716 { 2717 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]); 2718 } 2719 } 2720 2721 /* Mask to extract the bits corresponding to an instruction in a 2722 specific pipe of a bundle. */ 2723 static const bfd_byte insn_mask_X1[] = { 2724 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x7f 2725 }; 2726 2727 /* Mask to extract the bits corresponding to an instruction in a 2728 specific pipe of a bundle, minus the destination operand and the 2729 first source operand. */ 2730 static const bfd_byte insn_mask_X0_no_dest_no_srca[] = { 2731 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00 2732 }; 2733 2734 static const bfd_byte insn_mask_X1_no_dest_no_srca[] = { 2735 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x7f 2736 }; 2737 2738 static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = { 2739 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00 2740 }; 2741 2742 static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = { 2743 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x78 2744 }; 2745 2746 /* Mask to extract the first source operand of an instruction. */ 2747 static const bfd_byte srca_mask_X0[] = { 2748 0xc0, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 2749 }; 2750 2751 static const bfd_byte srca_mask_X1[] = { 2752 0x00, 0x00, 0x00, 0x00, 0xe0, 0x07, 0x00, 0x00 2753 }; 2754 2755 /* Various instructions synthesized to support tls references. */ 2756 2757 /* move r0, r0 in the X1 pipe, used for tls le. */ 2758 static const bfd_byte insn_tls_le_move_X1[] = { 2759 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x33, 0x08 2760 }; 2761 2762 /* move r0, zero in the X0 and X1 pipe, used for tls le. */ 2763 static const bfd_byte insn_tls_le_move_zero_X0X1[] = { 2764 0xc0, 0xff, 0xcf, 0x00, 0xe0, 0xff, 0x33, 0x08 2765 }; 2766 2767 /* lw r0, r0 in the X1 pipe, used for tls ie. */ 2768 static const bfd_byte insn_tls_ie_lw_X1[] = { 2769 0x00, 0x00, 0x00, 0x00, 0x00, 0x70, 0x0b, 0x40 2770 }; 2771 2772 /* add r0, r0, tp in various pipes, used for tls ie. */ 2773 static const bfd_byte insn_tls_ie_add_X0X1[] = { 2774 0x00, 0x50, 0x0f, 0x00, 0x00, 0xa8, 0x07, 0x08 2775 }; 2776 static const bfd_byte insn_tls_ie_add_Y0Y1[] = { 2777 0x00, 0x50, 0x03, 0x08, 0x00, 0xa8, 0x01, 0x8c 2778 }; 2779 2780 /* move r0, r0 in various pipes, used for tls gd. */ 2781 static const bfd_byte insn_tls_gd_add_X0X1[] = { 2782 0x00, 0xf0, 0xcf, 0x00, 0x00, 0xf8, 0x33, 0x08 2783 }; 2784 static const bfd_byte insn_tls_gd_add_Y0Y1[] = { 2785 0x00, 0xf0, 0x0b, 0x18, 0x00, 0xf8, 0x05, 0x9c 2786 }; 2787 2788 /* Relocate an TILEPRO ELF section. 2789 2790 The RELOCATE_SECTION function is called by the new ELF backend linker 2791 to handle the relocations for a section. 2792 2793 The relocs are always passed as Rela structures. 2794 2795 This function is responsible for adjusting the section contents as 2796 necessary, and (if generating a relocatable output file) adjusting 2797 the reloc addend as necessary. 2798 2799 This function does not have to worry about setting the reloc 2800 address or the reloc symbol index. 2801 2802 LOCAL_SYMS is a pointer to the swapped in local symbols. 2803 2804 LOCAL_SECTIONS is an array giving the section in the input file 2805 corresponding to the st_shndx field of each local symbol. 2806 2807 The global hash table entry for the global symbols can be found 2808 via elf_sym_hashes (input_bfd). 2809 2810 When generating relocatable output, this function must handle 2811 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 2812 going to be the section symbol corresponding to the output 2813 section, which means that the addend must be adjusted 2814 accordingly. */ 2815 2816 static bfd_boolean 2817 tilepro_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, 2818 bfd *input_bfd, asection *input_section, 2819 bfd_byte *contents, Elf_Internal_Rela *relocs, 2820 Elf_Internal_Sym *local_syms, 2821 asection **local_sections) 2822 { 2823 struct tilepro_elf_link_hash_table *htab; 2824 Elf_Internal_Shdr *symtab_hdr; 2825 struct elf_link_hash_entry **sym_hashes; 2826 bfd_vma *local_got_offsets; 2827 bfd_vma got_base; 2828 asection *sreloc; 2829 Elf_Internal_Rela *rel; 2830 Elf_Internal_Rela *relend; 2831 int num_relocs; 2832 2833 htab = tilepro_elf_hash_table (info); 2834 BFD_ASSERT (htab != NULL); 2835 symtab_hdr = &elf_symtab_hdr (input_bfd); 2836 sym_hashes = elf_sym_hashes (input_bfd); 2837 local_got_offsets = elf_local_got_offsets (input_bfd); 2838 2839 if (elf_hash_table (info)->hgot == NULL) 2840 got_base = 0; 2841 else 2842 got_base = elf_hash_table (info)->hgot->root.u.def.value; 2843 2844 sreloc = elf_section_data (input_section)->sreloc; 2845 2846 rel = relocs; 2847 num_relocs = input_section->reloc_count; 2848 relend = relocs + num_relocs; 2849 for (; rel < relend; rel++) 2850 { 2851 int r_type, tls_type; 2852 bfd_boolean is_tls_iele, is_tls_le; 2853 reloc_howto_type *howto; 2854 unsigned long r_symndx; 2855 struct elf_link_hash_entry *h; 2856 Elf_Internal_Sym *sym; 2857 tilepro_create_func create_func; 2858 asection *sec; 2859 bfd_vma relocation; 2860 bfd_reloc_status_type r; 2861 const char *name; 2862 bfd_vma off; 2863 bfd_boolean is_plt = FALSE; 2864 2865 bfd_boolean unresolved_reloc; 2866 2867 r_type = ELF32_R_TYPE (rel->r_info); 2868 if (r_type == R_TILEPRO_GNU_VTINHERIT 2869 || r_type == R_TILEPRO_GNU_VTENTRY) 2870 continue; 2871 2872 if ((unsigned int)r_type >= NELEMS(tilepro_elf_howto_table)) 2873 { 2874 /* Not clear if we need to check here, but just be paranoid. */ 2875 (*_bfd_error_handler) 2876 (_("%B: unrecognized relocation (0x%x) in section `%A'"), 2877 input_bfd, r_type, input_section); 2878 bfd_set_error (bfd_error_bad_value); 2879 return FALSE; 2880 } 2881 2882 howto = tilepro_elf_howto_table + r_type; 2883 2884 /* This is a final link. */ 2885 r_symndx = ELF32_R_SYM (rel->r_info); 2886 h = NULL; 2887 sym = NULL; 2888 sec = NULL; 2889 unresolved_reloc = FALSE; 2890 if (r_symndx < symtab_hdr->sh_info) 2891 { 2892 sym = local_syms + r_symndx; 2893 sec = local_sections[r_symndx]; 2894 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2895 } 2896 else 2897 { 2898 bfd_boolean warned ATTRIBUTE_UNUSED; 2899 bfd_boolean ignored ATTRIBUTE_UNUSED; 2900 2901 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 2902 r_symndx, symtab_hdr, sym_hashes, 2903 h, sec, relocation, 2904 unresolved_reloc, warned, ignored); 2905 if (warned) 2906 { 2907 /* To avoid generating warning messages about truncated 2908 relocations, set the relocation's address to be the same as 2909 the start of this section. */ 2910 if (input_section->output_section != NULL) 2911 relocation = input_section->output_section->vma; 2912 else 2913 relocation = 0; 2914 } 2915 } 2916 2917 if (sec != NULL && discarded_section (sec)) 2918 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 2919 rel, 1, relend, howto, 0, contents); 2920 2921 if (info->relocatable) 2922 continue; 2923 2924 if (h != NULL) 2925 name = h->root.root.string; 2926 else 2927 { 2928 name = (bfd_elf_string_from_elf_section 2929 (input_bfd, symtab_hdr->sh_link, sym->st_name)); 2930 if (name == NULL || *name == '\0') 2931 name = bfd_section_name (input_bfd, sec); 2932 } 2933 2934 switch (r_type) 2935 { 2936 case R_TILEPRO_TLS_GD_CALL: 2937 case R_TILEPRO_IMM8_X0_TLS_GD_ADD: 2938 case R_TILEPRO_IMM8_Y0_TLS_GD_ADD: 2939 case R_TILEPRO_IMM8_X1_TLS_GD_ADD: 2940 case R_TILEPRO_IMM8_Y1_TLS_GD_ADD: 2941 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 2942 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 2943 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 2944 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 2945 tls_type = GOT_UNKNOWN; 2946 if (h == NULL && local_got_offsets) 2947 tls_type = 2948 _bfd_tilepro_elf_local_got_tls_type (input_bfd) [r_symndx]; 2949 else if (h != NULL) 2950 tls_type = tilepro_elf_hash_entry(h)->tls_type; 2951 2952 is_tls_iele = (! info->shared || tls_type == GOT_TLS_IE); 2953 is_tls_le = is_tls_iele && (!info->shared 2954 && (h == NULL || h->dynindx == -1)); 2955 2956 if (r_type == R_TILEPRO_TLS_GD_CALL) 2957 { 2958 if (is_tls_le) 2959 { 2960 /* GD -> LE */ 2961 tilepro_replace_insn (contents + rel->r_offset, 2962 insn_mask_X1, insn_tls_le_move_X1); 2963 continue; 2964 } 2965 else if (is_tls_iele) 2966 { 2967 /* GD -> IE */ 2968 tilepro_replace_insn (contents + rel->r_offset, 2969 insn_mask_X1, insn_tls_ie_lw_X1); 2970 continue; 2971 } 2972 2973 /* GD -> GD */ 2974 h = (struct elf_link_hash_entry *) 2975 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE, 2976 FALSE, TRUE); 2977 BFD_ASSERT (h != NULL); 2978 r_type = R_TILEPRO_JOFFLONG_X1_PLT; 2979 howto = tilepro_elf_howto_table + r_type; 2980 } 2981 else if (r_type == R_TILEPRO_IMM16_X0_TLS_GD_HA 2982 || r_type == R_TILEPRO_IMM16_X0_TLS_IE_HA) 2983 { 2984 if (is_tls_le) 2985 tilepro_replace_insn (contents + rel->r_offset, srca_mask_X0, 2986 insn_tls_le_move_zero_X0X1); 2987 } 2988 else if (r_type == R_TILEPRO_IMM16_X1_TLS_GD_HA 2989 || r_type == R_TILEPRO_IMM16_X1_TLS_IE_HA) 2990 { 2991 if (is_tls_le) 2992 tilepro_replace_insn (contents + rel->r_offset, srca_mask_X1, 2993 insn_tls_le_move_zero_X0X1); 2994 } 2995 else 2996 { 2997 const bfd_byte *mask = NULL; 2998 const bfd_byte *add_insn = NULL; 2999 3000 switch (r_type) 3001 { 3002 case R_TILEPRO_IMM8_X0_TLS_GD_ADD: 3003 add_insn = is_tls_iele ? insn_tls_ie_add_X0X1 3004 : insn_tls_gd_add_X0X1; 3005 mask = insn_mask_X0_no_dest_no_srca; 3006 break; 3007 case R_TILEPRO_IMM8_X1_TLS_GD_ADD: 3008 add_insn = is_tls_iele ? insn_tls_ie_add_X0X1 3009 : insn_tls_gd_add_X0X1; 3010 mask = insn_mask_X1_no_dest_no_srca; 3011 break; 3012 case R_TILEPRO_IMM8_Y0_TLS_GD_ADD: 3013 add_insn = is_tls_iele ? insn_tls_ie_add_Y0Y1 3014 : insn_tls_gd_add_Y0Y1; 3015 mask = insn_mask_Y0_no_dest_no_srca; 3016 break; 3017 case R_TILEPRO_IMM8_Y1_TLS_GD_ADD: 3018 add_insn = is_tls_iele ? insn_tls_ie_add_Y0Y1 3019 : insn_tls_gd_add_Y0Y1; 3020 mask = insn_mask_Y1_no_dest_no_srca; 3021 break; 3022 } 3023 3024 tilepro_replace_insn (contents + rel->r_offset, mask, add_insn); 3025 3026 continue; 3027 } 3028 break; 3029 case R_TILEPRO_TLS_IE_LOAD: 3030 if (!info->shared && (h == NULL || h->dynindx == -1)) 3031 /* IE -> LE */ 3032 tilepro_replace_insn (contents + rel->r_offset, 3033 insn_mask_X1_no_dest_no_srca, 3034 insn_tls_le_move_X1); 3035 else 3036 /* IE -> IE */ 3037 tilepro_replace_insn (contents + rel->r_offset, 3038 insn_mask_X1_no_dest_no_srca, 3039 insn_tls_ie_lw_X1); 3040 continue; 3041 break; 3042 default: 3043 break; 3044 } 3045 3046 switch (r_type) 3047 { 3048 case R_TILEPRO_IMM16_X0_GOT: 3049 case R_TILEPRO_IMM16_X1_GOT: 3050 case R_TILEPRO_IMM16_X0_GOT_LO: 3051 case R_TILEPRO_IMM16_X1_GOT_LO: 3052 case R_TILEPRO_IMM16_X0_GOT_HI: 3053 case R_TILEPRO_IMM16_X1_GOT_HI: 3054 case R_TILEPRO_IMM16_X0_GOT_HA: 3055 case R_TILEPRO_IMM16_X1_GOT_HA: 3056 /* Relocation is to the entry for this symbol in the global 3057 offset table. */ 3058 if (htab->elf.sgot == NULL) 3059 abort (); 3060 3061 if (h != NULL) 3062 { 3063 bfd_boolean dyn; 3064 3065 off = h->got.offset; 3066 BFD_ASSERT (off != (bfd_vma) -1); 3067 dyn = elf_hash_table (info)->dynamic_sections_created; 3068 3069 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) 3070 || (info->shared 3071 && SYMBOL_REFERENCES_LOCAL (info, h))) 3072 { 3073 /* This is actually a static link, or it is a 3074 -Bsymbolic link and the symbol is defined 3075 locally, or the symbol was forced to be local 3076 because of a version file. We must initialize 3077 this entry in the global offset table. Since the 3078 offset must always be a multiple 3079 of 4 for 32-bit, we use the least significant bit 3080 to record whether we have initialized it already. 3081 3082 When doing a dynamic link, we create a .rela.got 3083 relocation entry to initialize the value. This 3084 is done in the finish_dynamic_symbol routine. */ 3085 if ((off & 1) != 0) 3086 off &= ~1; 3087 else 3088 { 3089 bfd_put_32 (output_bfd, relocation, 3090 htab->elf.sgot->contents + off); 3091 h->got.offset |= 1; 3092 } 3093 } 3094 else 3095 unresolved_reloc = FALSE; 3096 } 3097 else 3098 { 3099 BFD_ASSERT (local_got_offsets != NULL 3100 && local_got_offsets[r_symndx] != (bfd_vma) -1); 3101 3102 off = local_got_offsets[r_symndx]; 3103 3104 /* The offset must always be a multiple of 4 on 32-bit. 3105 We use the least significant bit to record 3106 whether we have already processed this entry. */ 3107 if ((off & 1) != 0) 3108 off &= ~1; 3109 else 3110 { 3111 if (info->shared) 3112 { 3113 asection *s; 3114 Elf_Internal_Rela outrel; 3115 3116 /* We need to generate a R_TILEPRO_RELATIVE reloc 3117 for the dynamic linker. */ 3118 s = htab->elf.srelgot; 3119 BFD_ASSERT (s != NULL); 3120 3121 outrel.r_offset = (htab->elf.sgot->output_section->vma 3122 + htab->elf.sgot->output_offset 3123 + off); 3124 outrel.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE); 3125 outrel.r_addend = relocation; 3126 relocation = 0; 3127 tilepro_elf_append_rela_32 (output_bfd, s, &outrel); 3128 } 3129 3130 bfd_put_32 (output_bfd, relocation, 3131 htab->elf.sgot->contents + off); 3132 local_got_offsets[r_symndx] |= 1; 3133 } 3134 } 3135 relocation = off - got_base; 3136 break; 3137 3138 case R_TILEPRO_JOFFLONG_X1_PLT: 3139 /* Relocation is to the entry for this symbol in the 3140 procedure linkage table. */ 3141 BFD_ASSERT (h != NULL); 3142 3143 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL) 3144 { 3145 /* We didn't make a PLT entry for this symbol. This 3146 happens when statically linking PIC code, or when 3147 using -Bsymbolic. */ 3148 break; 3149 } 3150 3151 relocation = (htab->elf.splt->output_section->vma 3152 + htab->elf.splt->output_offset 3153 + h->plt.offset); 3154 unresolved_reloc = FALSE; 3155 break; 3156 3157 case R_TILEPRO_32_PCREL: 3158 case R_TILEPRO_16_PCREL: 3159 case R_TILEPRO_8_PCREL: 3160 case R_TILEPRO_IMM16_X0_PCREL: 3161 case R_TILEPRO_IMM16_X1_PCREL: 3162 case R_TILEPRO_IMM16_X0_LO_PCREL: 3163 case R_TILEPRO_IMM16_X1_LO_PCREL: 3164 case R_TILEPRO_IMM16_X0_HI_PCREL: 3165 case R_TILEPRO_IMM16_X1_HI_PCREL: 3166 case R_TILEPRO_IMM16_X0_HA_PCREL: 3167 case R_TILEPRO_IMM16_X1_HA_PCREL: 3168 if (h != NULL 3169 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 3170 break; 3171 /* Fall through. */ 3172 case R_TILEPRO_32: 3173 case R_TILEPRO_16: 3174 case R_TILEPRO_8: 3175 case R_TILEPRO_LO16: 3176 case R_TILEPRO_HI16: 3177 case R_TILEPRO_HA16: 3178 case R_TILEPRO_COPY: 3179 case R_TILEPRO_GLOB_DAT: 3180 case R_TILEPRO_JMP_SLOT: 3181 case R_TILEPRO_RELATIVE: 3182 case R_TILEPRO_BROFF_X1: 3183 case R_TILEPRO_JOFFLONG_X1: 3184 case R_TILEPRO_IMM8_X0: 3185 case R_TILEPRO_IMM8_Y0: 3186 case R_TILEPRO_IMM8_X1: 3187 case R_TILEPRO_IMM8_Y1: 3188 case R_TILEPRO_DEST_IMM8_X1: 3189 case R_TILEPRO_MT_IMM15_X1: 3190 case R_TILEPRO_MF_IMM15_X1: 3191 case R_TILEPRO_IMM16_X0: 3192 case R_TILEPRO_IMM16_X1: 3193 case R_TILEPRO_IMM16_X0_LO: 3194 case R_TILEPRO_IMM16_X1_LO: 3195 case R_TILEPRO_IMM16_X0_HI: 3196 case R_TILEPRO_IMM16_X1_HI: 3197 case R_TILEPRO_IMM16_X0_HA: 3198 case R_TILEPRO_IMM16_X1_HA: 3199 case R_TILEPRO_MMSTART_X0: 3200 case R_TILEPRO_MMEND_X0: 3201 case R_TILEPRO_MMSTART_X1: 3202 case R_TILEPRO_MMEND_X1: 3203 case R_TILEPRO_SHAMT_X0: 3204 case R_TILEPRO_SHAMT_X1: 3205 case R_TILEPRO_SHAMT_Y0: 3206 case R_TILEPRO_SHAMT_Y1: 3207 if ((input_section->flags & SEC_ALLOC) == 0) 3208 break; 3209 3210 if ((info->shared 3211 && (h == NULL 3212 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 3213 || h->root.type != bfd_link_hash_undefweak) 3214 && (! howto->pc_relative 3215 || !SYMBOL_CALLS_LOCAL (info, h))) 3216 || (!info->shared 3217 && h != NULL 3218 && h->dynindx != -1 3219 && !h->non_got_ref 3220 && ((h->def_dynamic 3221 && !h->def_regular) 3222 || h->root.type == bfd_link_hash_undefweak 3223 || h->root.type == bfd_link_hash_undefined))) 3224 { 3225 Elf_Internal_Rela outrel; 3226 bfd_boolean skip, relocate = FALSE; 3227 3228 /* When generating a shared object, these relocations 3229 are copied into the output file to be resolved at run 3230 time. */ 3231 3232 BFD_ASSERT (sreloc != NULL); 3233 3234 skip = FALSE; 3235 3236 outrel.r_offset = 3237 _bfd_elf_section_offset (output_bfd, info, input_section, 3238 rel->r_offset); 3239 if (outrel.r_offset == (bfd_vma) -1) 3240 skip = TRUE; 3241 else if (outrel.r_offset == (bfd_vma) -2) 3242 skip = TRUE, relocate = TRUE; 3243 outrel.r_offset += (input_section->output_section->vma 3244 + input_section->output_offset); 3245 3246 switch (r_type) 3247 { 3248 case R_TILEPRO_32_PCREL: 3249 case R_TILEPRO_16_PCREL: 3250 case R_TILEPRO_8_PCREL: 3251 /* If the symbol is not dynamic, we should not keep 3252 a dynamic relocation. But an .rela.* slot has been 3253 allocated for it, output R_TILEPRO_NONE. 3254 FIXME: Add code tracking needed dynamic relocs as 3255 e.g. i386 has. */ 3256 if (h->dynindx == -1) 3257 skip = TRUE, relocate = TRUE; 3258 break; 3259 } 3260 3261 if (skip) 3262 memset (&outrel, 0, sizeof outrel); 3263 /* h->dynindx may be -1 if the symbol was marked to 3264 become local. */ 3265 else if (h != NULL && 3266 h->dynindx != -1 3267 && (! is_plt 3268 || !info->shared 3269 || !SYMBOLIC_BIND (info, h) 3270 || !h->def_regular)) 3271 { 3272 BFD_ASSERT (h->dynindx != -1); 3273 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 3274 outrel.r_addend = rel->r_addend; 3275 } 3276 else 3277 { 3278 if (r_type == R_TILEPRO_32) 3279 { 3280 outrel.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE); 3281 outrel.r_addend = relocation + rel->r_addend; 3282 } 3283 else 3284 { 3285 long indx; 3286 3287 outrel.r_addend = relocation + rel->r_addend; 3288 3289 if (is_plt) 3290 sec = htab->elf.splt; 3291 3292 if (bfd_is_abs_section (sec)) 3293 indx = 0; 3294 else if (sec == NULL || sec->owner == NULL) 3295 { 3296 bfd_set_error (bfd_error_bad_value); 3297 return FALSE; 3298 } 3299 else 3300 { 3301 asection *osec; 3302 3303 /* We are turning this relocation into one 3304 against a section symbol. It would be 3305 proper to subtract the symbol's value, 3306 osec->vma, from the emitted reloc addend, 3307 but ld.so expects buggy relocs. */ 3308 osec = sec->output_section; 3309 indx = elf_section_data (osec)->dynindx; 3310 3311 if (indx == 0) 3312 { 3313 osec = htab->elf.text_index_section; 3314 indx = elf_section_data (osec)->dynindx; 3315 } 3316 3317 /* FIXME: we really should be able to link non-pic 3318 shared libraries. */ 3319 if (indx == 0) 3320 { 3321 BFD_FAIL (); 3322 (*_bfd_error_handler) 3323 (_("%B: probably compiled without -fPIC?"), 3324 input_bfd); 3325 bfd_set_error (bfd_error_bad_value); 3326 return FALSE; 3327 } 3328 } 3329 3330 outrel.r_info = ELF32_R_INFO (indx, r_type); 3331 } 3332 } 3333 3334 tilepro_elf_append_rela_32 (output_bfd, sreloc, &outrel); 3335 3336 /* This reloc will be computed at runtime, so there's no 3337 need to do anything now. */ 3338 if (! relocate) 3339 continue; 3340 } 3341 break; 3342 3343 case R_TILEPRO_IMM16_X0_TLS_LE: 3344 case R_TILEPRO_IMM16_X1_TLS_LE: 3345 case R_TILEPRO_IMM16_X0_TLS_LE_LO: 3346 case R_TILEPRO_IMM16_X1_TLS_LE_LO: 3347 case R_TILEPRO_IMM16_X0_TLS_LE_HI: 3348 case R_TILEPRO_IMM16_X1_TLS_LE_HI: 3349 case R_TILEPRO_IMM16_X0_TLS_LE_HA: 3350 case R_TILEPRO_IMM16_X1_TLS_LE_HA: 3351 if (info->shared) 3352 { 3353 Elf_Internal_Rela outrel; 3354 bfd_boolean skip; 3355 3356 BFD_ASSERT (sreloc != NULL); 3357 skip = FALSE; 3358 outrel.r_offset = 3359 _bfd_elf_section_offset (output_bfd, info, input_section, 3360 rel->r_offset); 3361 if (outrel.r_offset == (bfd_vma) -1) 3362 skip = TRUE; 3363 else if (outrel.r_offset == (bfd_vma) -2) 3364 skip = TRUE; 3365 outrel.r_offset += (input_section->output_section->vma 3366 + input_section->output_offset); 3367 if (skip) 3368 memset (&outrel, 0, sizeof outrel); 3369 else 3370 { 3371 outrel.r_info = ELF32_R_INFO (0, r_type); 3372 outrel.r_addend = relocation - dtpoff_base (info) 3373 + rel->r_addend; 3374 } 3375 3376 tilepro_elf_append_rela_32 (output_bfd, sreloc, &outrel); 3377 continue; 3378 } 3379 relocation = tpoff (info, relocation); 3380 break; 3381 3382 case R_TILEPRO_IMM16_X0_TLS_GD: 3383 case R_TILEPRO_IMM16_X1_TLS_GD: 3384 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 3385 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 3386 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 3387 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 3388 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 3389 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 3390 case R_TILEPRO_IMM16_X0_TLS_IE: 3391 case R_TILEPRO_IMM16_X1_TLS_IE: 3392 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 3393 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 3394 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 3395 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 3396 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 3397 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 3398 r_type = tilepro_elf_tls_transition (info, r_type, h == NULL); 3399 tls_type = GOT_UNKNOWN; 3400 if (h == NULL && local_got_offsets) 3401 tls_type 3402 = _bfd_tilepro_elf_local_got_tls_type (input_bfd) [r_symndx]; 3403 else if (h != NULL) 3404 { 3405 tls_type = tilepro_elf_hash_entry(h)->tls_type; 3406 if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE) 3407 r_type = tilepro_tls_translate_to_le (r_type); 3408 } 3409 if (tls_type == GOT_TLS_IE) 3410 r_type = tilepro_tls_translate_to_ie (r_type); 3411 3412 if (r_type == R_TILEPRO_IMM16_X0_TLS_LE 3413 || r_type == R_TILEPRO_IMM16_X1_TLS_LE 3414 || r_type == R_TILEPRO_IMM16_X0_TLS_LE_LO 3415 || r_type == R_TILEPRO_IMM16_X1_TLS_LE_LO 3416 || r_type == R_TILEPRO_IMM16_X0_TLS_LE_HI 3417 || r_type == R_TILEPRO_IMM16_X1_TLS_LE_HI 3418 || r_type == R_TILEPRO_IMM16_X0_TLS_LE_HA 3419 || r_type == R_TILEPRO_IMM16_X1_TLS_LE_HA) 3420 { 3421 relocation = tpoff (info, relocation); 3422 break; 3423 } 3424 3425 if (h != NULL) 3426 { 3427 off = h->got.offset; 3428 h->got.offset |= 1; 3429 } 3430 else 3431 { 3432 BFD_ASSERT (local_got_offsets != NULL); 3433 off = local_got_offsets[r_symndx]; 3434 local_got_offsets[r_symndx] |= 1; 3435 } 3436 3437 if (htab->elf.sgot == NULL) 3438 abort (); 3439 3440 if ((off & 1) != 0) 3441 off &= ~1; 3442 else 3443 { 3444 Elf_Internal_Rela outrel; 3445 int indx = 0; 3446 bfd_boolean need_relocs = FALSE; 3447 3448 if (htab->elf.srelgot == NULL) 3449 abort (); 3450 3451 if (h != NULL) 3452 { 3453 bfd_boolean dyn; 3454 dyn = htab->elf.dynamic_sections_created; 3455 3456 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) 3457 && (!info->shared 3458 || !SYMBOL_REFERENCES_LOCAL (info, h))) 3459 { 3460 indx = h->dynindx; 3461 } 3462 } 3463 3464 /* The GOT entries have not been initialized yet. Do it 3465 now, and emit any relocations. */ 3466 if ((info->shared || indx != 0) 3467 && (h == NULL 3468 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 3469 || h->root.type != bfd_link_hash_undefweak)) 3470 need_relocs = TRUE; 3471 3472 switch (r_type) 3473 { 3474 case R_TILEPRO_IMM16_X0_TLS_IE: 3475 case R_TILEPRO_IMM16_X1_TLS_IE: 3476 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 3477 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 3478 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 3479 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 3480 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 3481 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 3482 if (need_relocs) { 3483 bfd_put_32 (output_bfd, 0, htab->elf.sgot->contents + off); 3484 outrel.r_offset = (htab->elf.sgot->output_section->vma 3485 + htab->elf.sgot->output_offset + off); 3486 outrel.r_addend = 0; 3487 if (indx == 0) 3488 outrel.r_addend = relocation - dtpoff_base (info); 3489 outrel.r_info = ELF32_R_INFO (indx, R_TILEPRO_TLS_TPOFF32); 3490 tilepro_elf_append_rela_32 (output_bfd, htab->elf.srelgot, 3491 &outrel); 3492 } else { 3493 bfd_put_32 (output_bfd, tpoff (info, relocation), 3494 htab->elf.sgot->contents + off); 3495 } 3496 break; 3497 3498 case R_TILEPRO_IMM16_X0_TLS_GD: 3499 case R_TILEPRO_IMM16_X1_TLS_GD: 3500 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 3501 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 3502 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 3503 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 3504 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 3505 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 3506 if (need_relocs) { 3507 outrel.r_offset = (htab->elf.sgot->output_section->vma 3508 + htab->elf.sgot->output_offset + off); 3509 outrel.r_addend = 0; 3510 outrel.r_info = ELF32_R_INFO (indx, R_TILEPRO_TLS_DTPMOD32); 3511 bfd_put_32 (output_bfd, 0, htab->elf.sgot->contents + off); 3512 tilepro_elf_append_rela_32 (output_bfd, htab->elf.srelgot, 3513 &outrel); 3514 if (indx == 0) 3515 { 3516 BFD_ASSERT (! unresolved_reloc); 3517 bfd_put_32 (output_bfd, 3518 relocation - dtpoff_base (info), 3519 (htab->elf.sgot->contents + off + 3520 TILEPRO_BYTES_PER_WORD)); 3521 } 3522 else 3523 { 3524 bfd_put_32 (output_bfd, 0, 3525 (htab->elf.sgot->contents + off + 3526 TILEPRO_BYTES_PER_WORD)); 3527 outrel.r_info = ELF32_R_INFO (indx, 3528 R_TILEPRO_TLS_DTPOFF32); 3529 outrel.r_offset += TILEPRO_BYTES_PER_WORD; 3530 tilepro_elf_append_rela_32 (output_bfd, 3531 htab->elf.srelgot, &outrel); 3532 } 3533 } 3534 3535 else { 3536 /* If we are not emitting relocations for a 3537 general dynamic reference, then we must be in a 3538 static link or an executable link with the 3539 symbol binding locally. Mark it as belonging 3540 to module 1, the executable. */ 3541 bfd_put_32 (output_bfd, 1, 3542 htab->elf.sgot->contents + off ); 3543 bfd_put_32 (output_bfd, relocation - dtpoff_base (info), 3544 htab->elf.sgot->contents + off + 3545 TILEPRO_BYTES_PER_WORD); 3546 } 3547 break; 3548 } 3549 } 3550 3551 if (off >= (bfd_vma) -2) 3552 abort (); 3553 3554 relocation = off - got_base; 3555 unresolved_reloc = FALSE; 3556 howto = tilepro_elf_howto_table + r_type; 3557 break; 3558 3559 default: 3560 break; 3561 } 3562 3563 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections 3564 because such sections are not SEC_ALLOC and thus ld.so will 3565 not process them. */ 3566 if (unresolved_reloc 3567 && !((input_section->flags & SEC_DEBUGGING) != 0 3568 && h->def_dynamic) 3569 && _bfd_elf_section_offset (output_bfd, info, input_section, 3570 rel->r_offset) != (bfd_vma) -1) 3571 (*_bfd_error_handler) 3572 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), 3573 input_bfd, 3574 input_section, 3575 (long) rel->r_offset, 3576 howto->name, 3577 h->root.root.string); 3578 3579 r = bfd_reloc_continue; 3580 3581 /* For the _HA types, we add 0x8000 so that if bit 15 is set, 3582 * we will increment bit 16. The howto->rightshift takes care 3583 * of the rest for us. */ 3584 switch (r_type) 3585 { 3586 case R_TILEPRO_HA16: 3587 case R_TILEPRO_IMM16_X0_HA: 3588 case R_TILEPRO_IMM16_X1_HA: 3589 case R_TILEPRO_IMM16_X0_HA_PCREL: 3590 case R_TILEPRO_IMM16_X1_HA_PCREL: 3591 case R_TILEPRO_IMM16_X0_GOT_HA: 3592 case R_TILEPRO_IMM16_X1_GOT_HA: 3593 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 3594 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 3595 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 3596 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 3597 relocation += 0x8000; 3598 break; 3599 } 3600 3601 /* Get the operand creation function, if any. */ 3602 create_func = reloc_to_create_func[r_type]; 3603 if (create_func == NULL) 3604 { 3605 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3606 contents, rel->r_offset, 3607 relocation, rel->r_addend); 3608 } 3609 else 3610 { 3611 if (howto->pc_relative) 3612 { 3613 relocation -= 3614 input_section->output_section->vma + input_section->output_offset; 3615 if (howto->pcrel_offset) 3616 relocation -= rel->r_offset; 3617 } 3618 3619 bfd_byte *data; 3620 3621 /* Add the relocation addend if any to the final target value */ 3622 relocation += rel->r_addend; 3623 3624 /* Do basic range checking */ 3625 r = bfd_check_overflow (howto->complain_on_overflow, 3626 howto->bitsize, 3627 howto->rightshift, 3628 32, 3629 relocation); 3630 3631 /* 3632 * Write the relocated value out into the raw section data. 3633 * Don't put a relocation out in the .rela section. 3634 */ 3635 tilepro_bundle_bits mask = create_func(-1); 3636 tilepro_bundle_bits value = create_func(relocation >> howto->rightshift); 3637 3638 /* Only touch bytes while the mask is not 0, so we 3639 don't write to out of bounds memory if this is actually 3640 a 16-bit switch instruction. */ 3641 for (data = contents + rel->r_offset; mask != 0; data++) 3642 { 3643 bfd_byte byte_mask = (bfd_byte)mask; 3644 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask); 3645 mask >>= 8; 3646 value >>= 8; 3647 } 3648 } 3649 3650 if (r != bfd_reloc_ok) 3651 { 3652 const char *msg = NULL; 3653 3654 switch (r) 3655 { 3656 case bfd_reloc_overflow: 3657 r = info->callbacks->reloc_overflow 3658 (info, (h ? &h->root : NULL), name, howto->name, 3659 (bfd_vma) 0, input_bfd, input_section, rel->r_offset); 3660 break; 3661 3662 case bfd_reloc_undefined: 3663 r = info->callbacks->undefined_symbol 3664 (info, name, input_bfd, input_section, rel->r_offset, 3665 TRUE); 3666 break; 3667 3668 case bfd_reloc_outofrange: 3669 msg = _("internal error: out of range error"); 3670 break; 3671 3672 case bfd_reloc_notsupported: 3673 msg = _("internal error: unsupported relocation error"); 3674 break; 3675 3676 case bfd_reloc_dangerous: 3677 msg = _("internal error: dangerous relocation"); 3678 break; 3679 3680 default: 3681 msg = _("internal error: unknown error"); 3682 break; 3683 } 3684 3685 if (msg) 3686 r = info->callbacks->warning 3687 (info, msg, name, input_bfd, input_section, rel->r_offset); 3688 3689 if (! r) 3690 return FALSE; 3691 } 3692 } 3693 3694 return TRUE; 3695 } 3696 3697 /* Finish up dynamic symbol handling. We set the contents of various 3698 dynamic sections here. */ 3699 3700 static bfd_boolean 3701 tilepro_elf_finish_dynamic_symbol (bfd *output_bfd, 3702 struct bfd_link_info *info, 3703 struct elf_link_hash_entry *h, 3704 Elf_Internal_Sym *sym) 3705 { 3706 struct tilepro_elf_link_hash_table *htab; 3707 3708 htab = tilepro_elf_hash_table (info); 3709 BFD_ASSERT (htab != NULL); 3710 3711 if (h->plt.offset != (bfd_vma) -1) 3712 { 3713 asection *splt; 3714 asection *srela; 3715 asection *sgotplt; 3716 Elf_Internal_Rela rela; 3717 bfd_byte *loc; 3718 bfd_vma r_offset; 3719 3720 int rela_index; 3721 3722 /* This symbol has an entry in the PLT. Set it up. */ 3723 3724 BFD_ASSERT (h->dynindx != -1); 3725 3726 splt = htab->elf.splt; 3727 srela = htab->elf.srelplt; 3728 sgotplt = htab->elf.sgotplt; 3729 3730 if (splt == NULL || srela == NULL) 3731 abort (); 3732 3733 /* Fill in the entry in the procedure linkage table. */ 3734 rela_index = tilepro_plt_entry_build (splt, sgotplt, h->plt.offset, 3735 &r_offset); 3736 3737 /* Fill in the entry in the global offset table, which initially points 3738 to the beginning of the plt. */ 3739 bfd_put_32 (output_bfd, splt->output_section->vma + splt->output_offset, 3740 sgotplt->contents + r_offset); 3741 3742 /* Fill in the entry in the .rela.plt section. */ 3743 rela.r_offset = (sgotplt->output_section->vma 3744 + sgotplt->output_offset 3745 + r_offset); 3746 rela.r_addend = 0; 3747 rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_JMP_SLOT); 3748 3749 loc = srela->contents + rela_index * sizeof (Elf32_External_Rela); 3750 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3751 3752 if (!h->def_regular) 3753 { 3754 /* Mark the symbol as undefined, rather than as defined in 3755 the .plt section. Leave the value alone. */ 3756 sym->st_shndx = SHN_UNDEF; 3757 /* If the symbol is weak, we do need to clear the value. 3758 Otherwise, the PLT entry would provide a definition for 3759 the symbol even if the symbol wasn't defined anywhere, 3760 and so the symbol would never be NULL. */ 3761 if (!h->ref_regular_nonweak) 3762 sym->st_value = 0; 3763 } 3764 } 3765 3766 if (h->got.offset != (bfd_vma) -1 3767 && tilepro_elf_hash_entry(h)->tls_type != GOT_TLS_GD 3768 && tilepro_elf_hash_entry(h)->tls_type != GOT_TLS_IE) 3769 { 3770 asection *sgot; 3771 asection *srela; 3772 Elf_Internal_Rela rela; 3773 3774 /* This symbol has an entry in the GOT. Set it up. */ 3775 3776 sgot = htab->elf.sgot; 3777 srela = htab->elf.srelgot; 3778 BFD_ASSERT (sgot != NULL && srela != NULL); 3779 3780 rela.r_offset = (sgot->output_section->vma 3781 + sgot->output_offset 3782 + (h->got.offset &~ (bfd_vma) 1)); 3783 3784 /* If this is a -Bsymbolic link, and the symbol is defined 3785 locally, we just want to emit a RELATIVE reloc. Likewise if 3786 the symbol was forced to be local because of a version file. 3787 The entry in the global offset table will already have been 3788 initialized in the relocate_section function. */ 3789 if (info->shared 3790 && (info->symbolic || h->dynindx == -1) 3791 && h->def_regular) 3792 { 3793 asection *sec = h->root.u.def.section; 3794 rela.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE); 3795 rela.r_addend = (h->root.u.def.value 3796 + sec->output_section->vma 3797 + sec->output_offset); 3798 } 3799 else 3800 { 3801 rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_GLOB_DAT); 3802 rela.r_addend = 0; 3803 } 3804 3805 bfd_put_32 (output_bfd, 0, 3806 sgot->contents + (h->got.offset & ~(bfd_vma) 1)); 3807 tilepro_elf_append_rela_32 (output_bfd, srela, &rela); 3808 } 3809 3810 if (h->needs_copy) 3811 { 3812 asection *s; 3813 Elf_Internal_Rela rela; 3814 3815 /* This symbols needs a copy reloc. Set it up. */ 3816 BFD_ASSERT (h->dynindx != -1); 3817 3818 s = htab->srelbss; 3819 BFD_ASSERT (s != NULL); 3820 3821 rela.r_offset = (h->root.u.def.value 3822 + h->root.u.def.section->output_section->vma 3823 + h->root.u.def.section->output_offset); 3824 rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_COPY); 3825 rela.r_addend = 0; 3826 tilepro_elf_append_rela_32 (output_bfd, s, &rela); 3827 } 3828 3829 /* Mark some specially defined symbols as absolute. */ 3830 if (h == htab->elf.hdynamic 3831 || (h == htab->elf.hgot || h == htab->elf.hplt)) 3832 sym->st_shndx = SHN_ABS; 3833 3834 return TRUE; 3835 } 3836 3837 /* Finish up the dynamic sections. */ 3838 3839 static bfd_boolean 3840 tilepro_finish_dyn (bfd *output_bfd, struct bfd_link_info *info, 3841 bfd *dynobj, asection *sdyn, 3842 asection *splt ATTRIBUTE_UNUSED) 3843 { 3844 Elf32_External_Dyn *dyncon, *dynconend; 3845 struct tilepro_elf_link_hash_table *htab; 3846 3847 htab = tilepro_elf_hash_table (info); 3848 BFD_ASSERT (htab != NULL); 3849 dyncon = (Elf32_External_Dyn *) sdyn->contents; 3850 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); 3851 for (; dyncon < dynconend; dyncon++) 3852 { 3853 Elf_Internal_Dyn dyn; 3854 asection *s; 3855 3856 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 3857 3858 switch (dyn.d_tag) 3859 { 3860 case DT_PLTGOT: 3861 s = htab->elf.sgotplt; 3862 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 3863 break; 3864 case DT_JMPREL: 3865 s = htab->elf.srelplt; 3866 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 3867 break; 3868 case DT_PLTRELSZ: 3869 s = htab->elf.srelplt; 3870 dyn.d_un.d_val = s->size; 3871 break; 3872 default: 3873 continue; 3874 } 3875 3876 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3877 } 3878 return TRUE; 3879 } 3880 3881 static bfd_boolean 3882 tilepro_elf_finish_dynamic_sections (bfd *output_bfd, 3883 struct bfd_link_info *info) 3884 { 3885 bfd *dynobj; 3886 asection *sdyn; 3887 struct tilepro_elf_link_hash_table *htab; 3888 3889 htab = tilepro_elf_hash_table (info); 3890 BFD_ASSERT (htab != NULL); 3891 dynobj = htab->elf.dynobj; 3892 3893 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 3894 3895 if (elf_hash_table (info)->dynamic_sections_created) 3896 { 3897 asection *splt; 3898 bfd_boolean ret; 3899 3900 splt = htab->elf.splt; 3901 BFD_ASSERT (splt != NULL && sdyn != NULL); 3902 3903 ret = tilepro_finish_dyn (output_bfd, info, dynobj, sdyn, splt); 3904 3905 if (ret != TRUE) 3906 return ret; 3907 3908 /* Fill in the first entry in the procedure linkage table. */ 3909 if (splt->size > 0) 3910 { 3911 memcpy (splt->contents, tilepro_plt0_entry, PLT_HEADER_SIZE); 3912 memset (splt->contents + PLT_HEADER_SIZE, 0, 3913 PLT_ENTRY_SIZE - PLT_HEADER_SIZE); 3914 } 3915 3916 if (elf_section_data (splt->output_section) != NULL) 3917 elf_section_data (splt->output_section)->this_hdr.sh_entsize 3918 = PLT_ENTRY_SIZE; 3919 } 3920 3921 if (htab->elf.sgotplt) 3922 { 3923 if (bfd_is_abs_section (htab->elf.sgotplt->output_section)) 3924 { 3925 (*_bfd_error_handler) 3926 (_("discarded output section: `%A'"), htab->elf.sgotplt); 3927 return FALSE; 3928 } 3929 3930 if (htab->elf.sgotplt->size > 0) 3931 { 3932 /* Write the first two entries in .got.plt, needed for the dynamic 3933 linker. */ 3934 bfd_put_32 (output_bfd, (bfd_vma) -1, 3935 htab->elf.sgotplt->contents); 3936 bfd_put_32 (output_bfd, (bfd_vma) 0, 3937 htab->elf.sgotplt->contents + GOT_ENTRY_SIZE); 3938 } 3939 3940 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize 3941 = GOT_ENTRY_SIZE; 3942 } 3943 3944 if (htab->elf.sgot) 3945 { 3946 if (htab->elf.sgot->size > 0) 3947 { 3948 /* Set the first entry in the global offset table to the address of 3949 the dynamic section. */ 3950 bfd_vma val = (sdyn ? 3951 sdyn->output_section->vma + sdyn->output_offset : 3952 0); 3953 bfd_put_32 (output_bfd, val, htab->elf.sgot->contents); 3954 } 3955 3956 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize 3957 = GOT_ENTRY_SIZE; 3958 } 3959 3960 return TRUE; 3961 } 3962 3963 3964 3966 /* Return address for Ith PLT stub in section PLT, for relocation REL 3967 or (bfd_vma) -1 if it should not be included. */ 3968 3969 static bfd_vma 3970 tilepro_elf_plt_sym_val (bfd_vma i, const asection *plt, 3971 const arelent *rel ATTRIBUTE_UNUSED) 3972 { 3973 return plt->vma + (i + 1) * PLT_ENTRY_SIZE; 3974 } 3975 3976 static enum elf_reloc_type_class 3977 tilepro_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, 3978 const asection *rel_sec ATTRIBUTE_UNUSED, 3979 const Elf_Internal_Rela *rela) 3980 { 3981 switch ((int) ELF32_R_TYPE (rela->r_info)) 3982 { 3983 case R_TILEPRO_RELATIVE: 3984 return reloc_class_relative; 3985 case R_TILEPRO_JMP_SLOT: 3986 return reloc_class_plt; 3987 case R_TILEPRO_COPY: 3988 return reloc_class_copy; 3989 default: 3990 return reloc_class_normal; 3991 } 3992 } 3993 3994 static int 3995 tilepro_additional_program_headers (bfd *abfd, 3996 struct bfd_link_info *info ATTRIBUTE_UNUSED) 3997 { 3998 /* Each .intrpt section specified by the user adds another PT_LOAD 3999 header since the sections are discontiguous. */ 4000 static const char intrpt_sections[4][9] = 4001 { 4002 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3" 4003 }; 4004 int count = 0; 4005 int i; 4006 4007 for (i = 0; i < 4; i++) 4008 { 4009 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]); 4010 if (sec != NULL && (sec->flags & SEC_LOAD) != 0) 4011 ++count; 4012 } 4013 4014 /* Add four "padding" headers in to leave room in case a custom linker 4015 script does something fancy. Otherwise ld complains that it ran 4016 out of program headers and refuses to link. */ 4017 count += 4; 4018 4019 return count; 4020 } 4021 4022 #define ELF_ARCH bfd_arch_tilepro 4023 #define ELF_TARGET_ID TILEPRO_ELF_DATA 4024 #define ELF_MACHINE_CODE EM_TILEPRO 4025 #define ELF_MAXPAGESIZE 0x10000 4026 #define ELF_COMMONPAGESIZE 0x10000 4027 4028 #define TARGET_LITTLE_SYM tilepro_elf32_vec 4029 #define TARGET_LITTLE_NAME "elf32-tilepro" 4030 4031 #define elf_backend_reloc_type_class tilepro_reloc_type_class 4032 4033 #define bfd_elf32_bfd_reloc_name_lookup tilepro_reloc_name_lookup 4034 #define bfd_elf32_bfd_link_hash_table_create tilepro_elf_link_hash_table_create 4035 #define bfd_elf32_bfd_reloc_type_lookup tilepro_reloc_type_lookup 4036 4037 #define elf_backend_copy_indirect_symbol tilepro_elf_copy_indirect_symbol 4038 #define elf_backend_create_dynamic_sections tilepro_elf_create_dynamic_sections 4039 #define elf_backend_check_relocs tilepro_elf_check_relocs 4040 #define elf_backend_adjust_dynamic_symbol tilepro_elf_adjust_dynamic_symbol 4041 #define elf_backend_omit_section_dynsym tilepro_elf_omit_section_dynsym 4042 #define elf_backend_size_dynamic_sections tilepro_elf_size_dynamic_sections 4043 #define elf_backend_relocate_section tilepro_elf_relocate_section 4044 #define elf_backend_finish_dynamic_symbol tilepro_elf_finish_dynamic_symbol 4045 #define elf_backend_finish_dynamic_sections tilepro_elf_finish_dynamic_sections 4046 #define elf_backend_gc_mark_hook tilepro_elf_gc_mark_hook 4047 #define elf_backend_gc_sweep_hook tilepro_elf_gc_sweep_hook 4048 #define elf_backend_plt_sym_val tilepro_elf_plt_sym_val 4049 #define elf_info_to_howto_rel NULL 4050 #define elf_info_to_howto tilepro_info_to_howto_rela 4051 #define elf_backend_grok_prstatus tilepro_elf_grok_prstatus 4052 #define elf_backend_grok_psinfo tilepro_elf_grok_psinfo 4053 #define elf_backend_additional_program_headers tilepro_additional_program_headers 4054 4055 #define bfd_elf32_mkobject tilepro_elf_mkobject 4056 4057 #define elf_backend_init_index_section _bfd_elf_init_1_index_section 4058 4059 #define elf_backend_can_gc_sections 1 4060 #define elf_backend_can_refcount 1 4061 #define elf_backend_want_got_plt 1 4062 #define elf_backend_plt_readonly 1 4063 /* Align PLT mod 64 byte L2 line size. */ 4064 #define elf_backend_plt_alignment 6 4065 #define elf_backend_want_plt_sym 1 4066 #define elf_backend_got_header_size GOT_ENTRY_SIZE 4067 #define elf_backend_rela_normal 1 4068 #define elf_backend_default_execstack 0 4069 4070 #include "elf32-target.h" 4071
