1 /* TILEPro-specific support for 32-bit ELF. 2 Copyright 2011, 2012 Free Software Foundation, Inc. 3 4 This file is part of BFD, the Binary File Descriptor library. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 19 MA 02110-1301, USA. */ 20 21 #include "sysdep.h" 22 #include "bfd.h" 23 #include "libbfd.h" 24 #include "elf-bfd.h" 25 #include "elf/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. */ 560 561 typedef struct tilepro_reloc_map 562 { 563 bfd_reloc_code_real_type bfd_reloc_val; 564 unsigned int tilepro_reloc_val; 565 reloc_howto_type * table; 566 } reloc_map; 567 568 static const reloc_map tilepro_reloc_map [] = 569 { 570 #define TH_REMAP(bfd, tilepro) \ 571 { bfd, tilepro, tilepro_elf_howto_table }, 572 573 /* Standard relocations. */ 574 TH_REMAP (BFD_RELOC_NONE, R_TILEPRO_NONE) 575 TH_REMAP (BFD_RELOC_32, R_TILEPRO_32) 576 TH_REMAP (BFD_RELOC_16, R_TILEPRO_16) 577 TH_REMAP (BFD_RELOC_8, R_TILEPRO_8) 578 TH_REMAP (BFD_RELOC_32_PCREL, R_TILEPRO_32_PCREL) 579 TH_REMAP (BFD_RELOC_16_PCREL, R_TILEPRO_16_PCREL) 580 TH_REMAP (BFD_RELOC_8_PCREL, R_TILEPRO_8_PCREL) 581 TH_REMAP (BFD_RELOC_LO16, R_TILEPRO_LO16) 582 TH_REMAP (BFD_RELOC_HI16, R_TILEPRO_HI16) 583 TH_REMAP (BFD_RELOC_HI16_S, R_TILEPRO_HA16) 584 585 /* Custom relocations. */ 586 TH_REMAP (BFD_RELOC_TILEPRO_COPY, R_TILEPRO_COPY) 587 TH_REMAP (BFD_RELOC_TILEPRO_GLOB_DAT, R_TILEPRO_GLOB_DAT) 588 TH_REMAP (BFD_RELOC_TILEPRO_JMP_SLOT, R_TILEPRO_JMP_SLOT) 589 TH_REMAP (BFD_RELOC_TILEPRO_RELATIVE, R_TILEPRO_RELATIVE) 590 TH_REMAP (BFD_RELOC_TILEPRO_BROFF_X1, R_TILEPRO_BROFF_X1) 591 TH_REMAP (BFD_RELOC_TILEPRO_JOFFLONG_X1, R_TILEPRO_JOFFLONG_X1) 592 TH_REMAP (BFD_RELOC_TILEPRO_JOFFLONG_X1_PLT, R_TILEPRO_JOFFLONG_X1_PLT) 593 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X0, R_TILEPRO_IMM8_X0) 594 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y0, R_TILEPRO_IMM8_Y0) 595 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X1, R_TILEPRO_IMM8_X1) 596 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y1, R_TILEPRO_IMM8_Y1) 597 TH_REMAP (BFD_RELOC_TILEPRO_DEST_IMM8_X1, R_TILEPRO_DEST_IMM8_X1) 598 TH_REMAP (BFD_RELOC_TILEPRO_MT_IMM15_X1, R_TILEPRO_MT_IMM15_X1) 599 TH_REMAP (BFD_RELOC_TILEPRO_MF_IMM15_X1, R_TILEPRO_MF_IMM15_X1) 600 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0, R_TILEPRO_IMM16_X0) 601 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1, R_TILEPRO_IMM16_X1) 602 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_LO, R_TILEPRO_IMM16_X0_LO) 603 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_LO, R_TILEPRO_IMM16_X1_LO) 604 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HI, R_TILEPRO_IMM16_X0_HI) 605 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HI, R_TILEPRO_IMM16_X1_HI) 606 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HA, R_TILEPRO_IMM16_X0_HA) 607 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HA, R_TILEPRO_IMM16_X1_HA) 608 609 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_PCREL, R_TILEPRO_IMM16_X0_PCREL) 610 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_PCREL, R_TILEPRO_IMM16_X1_PCREL) 611 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_LO_PCREL, R_TILEPRO_IMM16_X0_LO_PCREL) 612 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_LO_PCREL, R_TILEPRO_IMM16_X1_LO_PCREL) 613 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HI_PCREL, R_TILEPRO_IMM16_X0_HI_PCREL) 614 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HI_PCREL, R_TILEPRO_IMM16_X1_HI_PCREL) 615 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HA_PCREL, R_TILEPRO_IMM16_X0_HA_PCREL) 616 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HA_PCREL, R_TILEPRO_IMM16_X1_HA_PCREL) 617 618 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT, R_TILEPRO_IMM16_X0_GOT) 619 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT, R_TILEPRO_IMM16_X1_GOT) 620 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_LO, R_TILEPRO_IMM16_X0_GOT_LO) 621 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_LO, R_TILEPRO_IMM16_X1_GOT_LO) 622 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_HI, R_TILEPRO_IMM16_X0_GOT_HI) 623 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_HI, R_TILEPRO_IMM16_X1_GOT_HI) 624 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_HA, R_TILEPRO_IMM16_X0_GOT_HA) 625 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_HA, R_TILEPRO_IMM16_X1_GOT_HA) 626 627 TH_REMAP (BFD_RELOC_TILEPRO_MMSTART_X0, R_TILEPRO_MMSTART_X0) 628 TH_REMAP (BFD_RELOC_TILEPRO_MMEND_X0, R_TILEPRO_MMEND_X0) 629 TH_REMAP (BFD_RELOC_TILEPRO_MMSTART_X1, R_TILEPRO_MMSTART_X1) 630 TH_REMAP (BFD_RELOC_TILEPRO_MMEND_X1, R_TILEPRO_MMEND_X1) 631 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_X0, R_TILEPRO_SHAMT_X0) 632 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_X1, R_TILEPRO_SHAMT_X1) 633 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_Y0, R_TILEPRO_SHAMT_Y0) 634 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_Y1, R_TILEPRO_SHAMT_Y1) 635 636 TH_REMAP (BFD_RELOC_TILEPRO_TLS_GD_CALL, R_TILEPRO_TLS_GD_CALL) 637 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X0_TLS_GD_ADD, R_TILEPRO_IMM8_X0_TLS_GD_ADD) 638 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X1_TLS_GD_ADD, R_TILEPRO_IMM8_X1_TLS_GD_ADD) 639 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y0_TLS_GD_ADD, R_TILEPRO_IMM8_Y0_TLS_GD_ADD) 640 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y1_TLS_GD_ADD, R_TILEPRO_IMM8_Y1_TLS_GD_ADD) 641 TH_REMAP (BFD_RELOC_TILEPRO_TLS_IE_LOAD, R_TILEPRO_TLS_IE_LOAD) 642 643 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD, R_TILEPRO_IMM16_X0_TLS_GD) 644 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD, R_TILEPRO_IMM16_X1_TLS_GD) 645 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_LO, R_TILEPRO_IMM16_X0_TLS_GD_LO) 646 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_LO, R_TILEPRO_IMM16_X1_TLS_GD_LO) 647 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_HI, R_TILEPRO_IMM16_X0_TLS_GD_HI) 648 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_HI, R_TILEPRO_IMM16_X1_TLS_GD_HI) 649 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_HA, R_TILEPRO_IMM16_X0_TLS_GD_HA) 650 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_HA, R_TILEPRO_IMM16_X1_TLS_GD_HA) 651 652 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE, R_TILEPRO_IMM16_X0_TLS_IE) 653 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE, R_TILEPRO_IMM16_X1_TLS_IE) 654 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_LO, R_TILEPRO_IMM16_X0_TLS_IE_LO) 655 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_LO, R_TILEPRO_IMM16_X1_TLS_IE_LO) 656 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_HI, R_TILEPRO_IMM16_X0_TLS_IE_HI) 657 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_HI, R_TILEPRO_IMM16_X1_TLS_IE_HI) 658 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_HA, R_TILEPRO_IMM16_X0_TLS_IE_HA) 659 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_HA, R_TILEPRO_IMM16_X1_TLS_IE_HA) 660 661 TH_REMAP (BFD_RELOC_TILEPRO_TLS_DTPMOD32, R_TILEPRO_TLS_DTPMOD32) 662 TH_REMAP (BFD_RELOC_TILEPRO_TLS_DTPOFF32, R_TILEPRO_TLS_DTPOFF32) 663 TH_REMAP (BFD_RELOC_TILEPRO_TLS_TPOFF32, R_TILEPRO_TLS_TPOFF32) 664 665 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE, R_TILEPRO_IMM16_X0_TLS_LE) 666 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE, R_TILEPRO_IMM16_X1_TLS_LE) 667 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_LO, R_TILEPRO_IMM16_X0_TLS_LE_LO) 668 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_LO, R_TILEPRO_IMM16_X1_TLS_LE_LO) 669 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HI, R_TILEPRO_IMM16_X0_TLS_LE_HI) 670 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HI, R_TILEPRO_IMM16_X1_TLS_LE_HI) 671 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HA, R_TILEPRO_IMM16_X0_TLS_LE_HA) 672 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HA, R_TILEPRO_IMM16_X1_TLS_LE_HA) 673 674 #undef TH_REMAP 675 676 { BFD_RELOC_VTABLE_INHERIT, R_TILEPRO_GNU_VTINHERIT, tilepro_elf_howto_table2 }, 677 { BFD_RELOC_VTABLE_ENTRY, R_TILEPRO_GNU_VTENTRY, tilepro_elf_howto_table2 }, 678 }; 679 680 681 682 /* The TILEPro linker needs to keep track of the number of relocs that it 683 decides to copy as dynamic relocs in check_relocs for each symbol. 684 This is so that it can later discard them if they are found to be 685 unnecessary. We store the information in a field extending the 686 regular ELF linker hash table. */ 687 688 struct tilepro_elf_dyn_relocs 689 { 690 struct tilepro_elf_dyn_relocs *next; 691 692 /* The input section of the reloc. */ 693 asection *sec; 694 695 /* Total number of relocs copied for the input section. */ 696 bfd_size_type count; 697 698 /* Number of pc-relative relocs copied for the input section. */ 699 bfd_size_type pc_count; 700 }; 701 702 /* TILEPRO ELF linker hash entry. */ 703 704 struct tilepro_elf_link_hash_entry 705 { 706 struct elf_link_hash_entry elf; 707 708 /* Track dynamic relocs copied for this symbol. */ 709 struct tilepro_elf_dyn_relocs *dyn_relocs; 710 711 #define GOT_UNKNOWN 0 712 #define GOT_NORMAL 1 713 #define GOT_TLS_GD 2 714 #define GOT_TLS_IE 4 715 unsigned char tls_type; 716 }; 717 718 #define tilepro_elf_hash_entry(ent) \ 719 ((struct tilepro_elf_link_hash_entry *)(ent)) 720 721 struct _bfd_tilepro_elf_obj_tdata 722 { 723 struct elf_obj_tdata root; 724 725 /* tls_type for each local got entry. */ 726 char *local_got_tls_type; 727 }; 728 729 #define _bfd_tilepro_elf_tdata(abfd) \ 730 ((struct _bfd_tilepro_elf_obj_tdata *) (abfd)->tdata.any) 731 732 #define _bfd_tilepro_elf_local_got_tls_type(abfd) \ 733 (_bfd_tilepro_elf_tdata (abfd)->local_got_tls_type) 734 735 #define is_tilepro_elf(bfd) \ 736 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ 737 && elf_tdata (bfd) != NULL \ 738 && elf_object_id (bfd) == TILEPRO_ELF_DATA) 739 740 #include "elf/common.h" 741 #include "elf/internal.h" 742 743 struct tilepro_elf_link_hash_table 744 { 745 struct elf_link_hash_table elf; 746 747 /* Short-cuts to get to dynamic linker sections. */ 748 asection *sdynbss; 749 asection *srelbss; 750 751 /* Small local sym to section mapping cache. */ 752 struct sym_cache sym_cache; 753 }; 754 755 /* Get the Tilepro ELF linker hash table from a link_info structure. */ 756 #define tilepro_elf_hash_table(p) \ 757 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 758 == TILEPRO_ELF_DATA \ 759 ? ((struct tilepro_elf_link_hash_table *) ((p)->hash)) : NULL) 760 761 static reloc_howto_type * 762 tilepro_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, 763 bfd_reloc_code_real_type code) 764 { 765 unsigned int i; 766 767 for (i = ARRAY_SIZE (tilepro_reloc_map); --i;) 768 { 769 const reloc_map * entry; 770 771 entry = tilepro_reloc_map + i; 772 773 if (entry->bfd_reloc_val == code) 774 return entry->table + (entry->tilepro_reloc_val 775 - entry->table[0].type); 776 } 777 778 return NULL; 779 } 780 781 static reloc_howto_type * 782 tilepro_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 783 const char *r_name) 784 { 785 unsigned int i; 786 787 for (i = 0; 788 i < (sizeof (tilepro_elf_howto_table) 789 / sizeof (tilepro_elf_howto_table[0])); 790 i++) 791 if (tilepro_elf_howto_table[i].name != NULL 792 && strcasecmp (tilepro_elf_howto_table[i].name, r_name) == 0) 793 return &tilepro_elf_howto_table[i]; 794 795 return NULL; 796 } 797 798 /* Set the howto pointer for an TILEPro ELF reloc. */ 799 800 static void 801 tilepro_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED, 802 arelent * cache_ptr, 803 Elf_Internal_Rela * dst) 804 { 805 unsigned int r_type = ELF32_R_TYPE (dst->r_info); 806 807 if (r_type <= (unsigned int) R_TILEPRO_IMM16_X1_TLS_LE_HA) 808 cache_ptr->howto = &tilepro_elf_howto_table [r_type]; 809 else if (r_type - R_TILEPRO_GNU_VTINHERIT 810 <= (unsigned int) R_TILEPRO_GNU_VTENTRY) 811 cache_ptr->howto 812 = &tilepro_elf_howto_table2 [r_type - R_TILEPRO_GNU_VTINHERIT]; 813 else 814 abort (); 815 } 816 817 typedef tilepro_bundle_bits (*tilepro_create_func)(int); 818 819 static const tilepro_create_func reloc_to_create_func[] = 820 { 821 /* The first fourteen relocation types don't correspond to operands */ 822 NULL, 823 NULL, 824 NULL, 825 NULL, 826 NULL, 827 NULL, 828 NULL, 829 NULL, 830 NULL, 831 NULL, 832 NULL, 833 NULL, 834 NULL, 835 NULL, 836 837 /* The remaining relocations are used for immediate operands */ 838 create_BrOff_X1, 839 create_JOffLong_X1, 840 create_JOffLong_X1, 841 create_Imm8_X0, 842 create_Imm8_Y0, 843 create_Imm8_X1, 844 create_Imm8_Y1, 845 create_MT_Imm15_X1, 846 create_MF_Imm15_X1, 847 create_Imm16_X0, 848 create_Imm16_X1, 849 create_Imm16_X0, 850 create_Imm16_X1, 851 create_Imm16_X0, 852 create_Imm16_X1, 853 create_Imm16_X0, 854 create_Imm16_X1, 855 create_Imm16_X0, 856 create_Imm16_X1, 857 create_Imm16_X0, 858 create_Imm16_X1, 859 create_Imm16_X0, 860 create_Imm16_X1, 861 create_Imm16_X0, 862 create_Imm16_X1, 863 create_Imm16_X0, 864 create_Imm16_X1, 865 create_Imm16_X0, 866 create_Imm16_X1, 867 create_Imm16_X0, 868 create_Imm16_X1, 869 create_Imm16_X0, 870 create_Imm16_X1, 871 create_MMStart_X0, 872 create_MMEnd_X0, 873 create_MMStart_X1, 874 create_MMEnd_X1, 875 create_ShAmt_X0, 876 create_ShAmt_X1, 877 create_ShAmt_Y0, 878 create_ShAmt_Y1, 879 880 create_Dest_Imm8_X1, 881 NULL, 882 NULL, 883 NULL, 884 NULL, 885 NULL, 886 NULL, 887 NULL, 888 NULL, 889 NULL, 890 NULL, 891 892 create_Imm16_X0, 893 create_Imm16_X1, 894 create_Imm16_X0, 895 create_Imm16_X1, 896 create_Imm16_X0, 897 create_Imm16_X1, 898 create_Imm16_X0, 899 create_Imm16_X1, 900 create_Imm16_X0, 901 create_Imm16_X1, 902 create_Imm16_X0, 903 create_Imm16_X1, 904 create_Imm16_X0, 905 create_Imm16_X1, 906 create_Imm16_X0, 907 create_Imm16_X1, 908 909 NULL, 910 NULL, 911 NULL, 912 913 create_Imm16_X0, 914 create_Imm16_X1, 915 create_Imm16_X0, 916 create_Imm16_X1, 917 create_Imm16_X0, 918 create_Imm16_X1, 919 create_Imm16_X0, 920 create_Imm16_X1, 921 }; 922 923 #define NELEMS(a) ((int) (sizeof (a) / sizeof ((a)[0]))) 924 925 /* Support for core dump NOTE sections. */ 926 927 static bfd_boolean 928 tilepro_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 929 { 930 int offset; 931 size_t size; 932 933 if (note->descsz != TILEPRO_PRSTATUS_SIZEOF) 934 return FALSE; 935 936 /* pr_cursig */ 937 elf_tdata (abfd)->core_signal = 938 bfd_get_16 (abfd, note->descdata + TILEPRO_PRSTATUS_OFFSET_PR_CURSIG); 939 940 /* pr_pid */ 941 elf_tdata (abfd)->core_pid = 942 bfd_get_32 (abfd, note->descdata + TILEPRO_PRSTATUS_OFFSET_PR_PID); 943 944 /* pr_reg */ 945 offset = TILEPRO_PRSTATUS_OFFSET_PR_REG; 946 size = TILEPRO_GREGSET_T_SIZE; 947 948 /* Make a ".reg/999" section. */ 949 return _bfd_elfcore_make_pseudosection (abfd, ".reg", 950 size, note->descpos + offset); 951 } 952 953 static bfd_boolean 954 tilepro_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 955 { 956 if (note->descsz != TILEPRO_PRPSINFO_SIZEOF) 957 return FALSE; 958 959 elf_tdata (abfd)->core_program 960 = _bfd_elfcore_strndup (abfd, 961 note->descdata + TILEPRO_PRPSINFO_OFFSET_PR_FNAME, 962 16); 963 elf_tdata (abfd)->core_command 964 = _bfd_elfcore_strndup (abfd, 965 note->descdata + TILEPRO_PRPSINFO_OFFSET_PR_PSARGS, 966 ELF_PR_PSARGS_SIZE); 967 968 969 /* Note that for some reason, a spurious space is tacked 970 onto the end of the args in some (at least one anyway) 971 implementations, so strip it off if it exists. */ 972 { 973 char *command = elf_tdata (abfd)->core_command; 974 int n = strlen (command); 975 976 if (0 < n && command[n - 1] == ' ') 977 command[n - 1] = '\0'; 978 } 979 980 return TRUE; 981 } 982 983 984 static void 985 tilepro_elf_append_rela_32 (bfd *abfd, asection *s, Elf_Internal_Rela *rel) 986 { 987 Elf32_External_Rela *loc32; 988 989 loc32 = (Elf32_External_Rela *) s->contents; 990 loc32 += s->reloc_count++; 991 bfd_elf32_swap_reloca_out (abfd, rel, (bfd_byte *) loc32); 992 } 993 994 /* PLT/GOT stuff */ 995 996 /* The procedure linkage table starts with the following header: 997 998 { 999 rli r29, r29, 16 1000 lwadd r28, r27, 4 1001 } 1002 lw r27, r27 1003 { 1004 info 10 ## SP not offset, return PC in LR 1005 jr r27 1006 } 1007 1008 Subsequent entries are the following, jumping to the header at the end: 1009 1010 lnk r28 1011 1: 1012 { 1013 auli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET> 1014 auli r27, r28, <_GLOBAL_OFFSET_TABLE_ - 1b> 1015 } 1016 { 1017 addli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET> 1018 addli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b> 1019 } 1020 { 1021 auli r29, zero, MY_PLT_INDEX 1022 lw r28, r28 1023 } 1024 { 1025 info 10 ## SP not offset, return PC in LR 1026 jr r28 1027 } 1028 1029 We initially store MY_PLT_INDEX in the high bits so that we can use the all 1030 16 bits as an unsigned offset; if we use the low bits we would get an 1031 unwanted sign extension. The PLT header then rotates the index to get the 1032 right value, before calling the resolution routine. This computation can 1033 fit in unused bundle slots so it's free. 1034 1035 This code sequence lets the code at at the start of the PLT determine 1036 which PLT entry was executed by examining 'r29'. 1037 1038 Note that MY_PLT_INDEX skips over the header entries, so the first 1039 actual jump table entry has index zero. 1040 */ 1041 1042 #define PLT_HEADER_SIZE_IN_BUNDLES 3 1043 #define PLT_ENTRY_SIZE_IN_BUNDLES 5 1044 1045 #define PLT_HEADER_SIZE \ 1046 (PLT_HEADER_SIZE_IN_BUNDLES * TILEPRO_BUNDLE_SIZE_IN_BYTES) 1047 #define PLT_ENTRY_SIZE \ 1048 (PLT_ENTRY_SIZE_IN_BUNDLES * TILEPRO_BUNDLE_SIZE_IN_BYTES) 1049 1050 /* The size in bytes of an entry in the global offset table. */ 1051 1052 #define GOT_ENTRY_SIZE TILEPRO_BYTES_PER_WORD 1053 1054 #define GOTPLT_HEADER_SIZE (2 * GOT_ENTRY_SIZE) 1055 1056 1057 static const bfd_byte 1058 tilepro_plt0_entry[PLT_HEADER_SIZE] = 1059 { 1060 0x5d, 0x07, 0x03, 0x70, 1061 0x6e, 0x23, 0xd0, 0x30, /* { rli r29, r29, 16 ; lwadd r28, r27, 4 } */ 1062 0x00, 0x50, 0xba, 0x6d, 1063 0x00, 0x08, 0x6d, 0xdc, /* { lw r27, r27 } */ 1064 0xff, 0xaf, 0x10, 0x50, 1065 0x60, 0x03, 0x18, 0x08, /* { info 10 ; jr r27 } */ 1066 }; 1067 1068 static const bfd_byte 1069 tilepro_short_plt_entry[PLT_ENTRY_SIZE] = 1070 { 1071 0x00, 0x50, 0x16, 0x70, 1072 0x0e, 0x00, 0x1a, 0x08, /* { lnk r28 } */ 1073 0x1c, 0x07, 0x00, 0xa0, 1074 0x8d, 0x03, 0x00, 0x18, /* { addli r28, r28, 0 ; addli r27, r28, 0 } */ 1075 0xdd, 0x0f, 0x00, 0x30, 1076 0x8e, 0x73, 0x0b, 0x40, /* { auli r29, zero, 0 ; lw r28, r28 } */ 1077 0xff, 0xaf, 0x10, 0x50, 1078 0x80, 0x03, 0x18, 0x08, /* { info 10 ; jr r28 } */ 1079 0x00, 0x00, 0x00, 0x00, 1080 0x00, 0x00, 0x00, 0x00, 1081 }; 1082 1083 static const bfd_byte 1084 tilepro_long_plt_entry[PLT_ENTRY_SIZE] = 1085 { 1086 0x00, 0x50, 0x16, 0x70, 1087 0x0e, 0x00, 0x1a, 0x08, /* { lnk r28 } */ 1088 0x1c, 0x07, 0x00, 0xb0, 1089 0x8d, 0x03, 0x00, 0x20, /* { auli r28, r28, 0 ; auli r27, r28, 0 } */ 1090 0x1c, 0x07, 0x00, 0xa0, 1091 0x6d, 0x03, 0x00, 0x18, /* { addli r28, r28, 0 ; addli r27, r27, 0 } */ 1092 0xdd, 0x0f, 0x00, 0x30, 1093 0x8e, 0x73, 0x0b, 0x40, /* { auli r29, zero, 0 ; lw r28, r28 } */ 1094 0xff, 0xaf, 0x10, 0x50, 1095 0x80, 0x03, 0x18, 0x08, /* { info 10 ; jr r28 } */ 1096 }; 1097 1098 static bfd_vma 1099 tilepro_ha16(bfd_vma vma) 1100 { 1101 return ((vma >> 16) + ((vma >> 15) & 1)) & 0xffff; 1102 } 1103 1104 static int 1105 tilepro_plt_entry_build (asection *splt, asection *sgotplt, bfd_vma offset, 1106 bfd_vma *r_offset) 1107 { 1108 int plt_index = (offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; 1109 int got_offset = plt_index * GOT_ENTRY_SIZE + GOTPLT_HEADER_SIZE; 1110 tilepro_bundle_bits *pc; 1111 1112 /* Compute the distance from the got entry to the lnk. */ 1113 bfd_signed_vma dist_got_entry = sgotplt->output_section->vma 1114 + sgotplt->output_offset 1115 + got_offset 1116 - splt->output_section->vma 1117 - splt->output_offset 1118 - offset 1119 - TILEPRO_BUNDLE_SIZE_IN_BYTES; 1120 1121 /* Compute the distance to GOTPLT[0]. */ 1122 bfd_signed_vma dist_got0 = dist_got_entry - got_offset; 1123 1124 /* Check whether we can use the short plt entry with 16-bit offset. */ 1125 bfd_boolean short_plt_entry = 1126 (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000); 1127 1128 /* Copy the plt entry template. */ 1129 memcpy (splt->contents + offset, 1130 short_plt_entry ? tilepro_short_plt_entry : tilepro_long_plt_entry, 1131 PLT_ENTRY_SIZE); 1132 1133 /* Write the immediate offsets. */ 1134 pc = (tilepro_bundle_bits *)(splt->contents + offset); 1135 pc++; 1136 1137 if (!short_plt_entry) 1138 { 1139 /* { auli r28, r28, &GOTPLT[MY_GOT_INDEX] ; auli r27, r28, &GOTPLT[0] } */ 1140 *pc++ |= create_Imm16_X0 (tilepro_ha16 (dist_got_entry)) 1141 | create_Imm16_X1 (tilepro_ha16 (dist_got0)); 1142 } 1143 1144 /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; addli r27, r28, &GOTPLT[0] } or 1145 { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; addli r27, r27, &GOTPLT[0] } */ 1146 *pc++ |= create_Imm16_X0 (dist_got_entry) 1147 | create_Imm16_X1 (dist_got0); 1148 1149 /* { auli r29, zero, MY_PLT_INDEX ; lw r28, r28 } */ 1150 *pc |= create_Imm16_X0 (plt_index); 1151 1152 /* Set the relocation offset. */ 1153 *r_offset = got_offset; 1154 1155 return plt_index; 1156 } 1157 1158 #define TILEPRO_ELF_RELA_BYTES (sizeof(Elf32_External_Rela)) 1159 1160 1161 /* Create an entry in an TILEPro ELF linker hash table. */ 1162 1163 static struct bfd_hash_entry * 1164 link_hash_newfunc (struct bfd_hash_entry *entry, 1165 struct bfd_hash_table *table, const char *string) 1166 { 1167 /* Allocate the structure if it has not already been allocated by a 1168 subclass. */ 1169 if (entry == NULL) 1170 { 1171 entry = 1172 bfd_hash_allocate (table, 1173 sizeof (struct tilepro_elf_link_hash_entry)); 1174 if (entry == NULL) 1175 return entry; 1176 } 1177 1178 /* Call the allocation method of the superclass. */ 1179 entry = _bfd_elf_link_hash_newfunc (entry, table, string); 1180 if (entry != NULL) 1181 { 1182 struct tilepro_elf_link_hash_entry *eh; 1183 1184 eh = (struct tilepro_elf_link_hash_entry *) entry; 1185 eh->dyn_relocs = NULL; 1186 eh->tls_type = GOT_UNKNOWN; 1187 } 1188 1189 return entry; 1190 } 1191 1192 /* Create a TILEPRO ELF linker hash table. */ 1193 1194 static struct bfd_link_hash_table * 1195 tilepro_elf_link_hash_table_create (bfd *abfd) 1196 { 1197 struct tilepro_elf_link_hash_table *ret; 1198 bfd_size_type amt = sizeof (struct tilepro_elf_link_hash_table); 1199 1200 ret = (struct tilepro_elf_link_hash_table *) bfd_zmalloc (amt); 1201 if (ret == NULL) 1202 return NULL; 1203 1204 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, 1205 sizeof (struct tilepro_elf_link_hash_entry), 1206 TILEPRO_ELF_DATA)) 1207 { 1208 free (ret); 1209 return NULL; 1210 } 1211 1212 return &ret->elf.root; 1213 } 1214 1215 /* Create the .got section. */ 1216 1217 static bfd_boolean 1218 tilepro_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) 1219 { 1220 flagword flags; 1221 asection *s, *s_got; 1222 struct elf_link_hash_entry *h; 1223 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 1224 struct elf_link_hash_table *htab = elf_hash_table (info); 1225 1226 /* This function may be called more than once. */ 1227 s = bfd_get_linker_section (abfd, ".got"); 1228 if (s != NULL) 1229 return TRUE; 1230 1231 flags = bed->dynamic_sec_flags; 1232 1233 s = bfd_make_section_with_flags (abfd, 1234 (bed->rela_plts_and_copies_p 1235 ? ".rela.got" : ".rel.got"), 1236 (bed->dynamic_sec_flags 1237 | SEC_READONLY)); 1238 if (s == NULL 1239 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 1240 return FALSE; 1241 htab->srelgot = s; 1242 1243 s = s_got = bfd_make_section_with_flags (abfd, ".got", flags); 1244 if (s == NULL 1245 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 1246 return FALSE; 1247 htab->sgot = s; 1248 1249 /* The first bit of the global offset table is the header. */ 1250 s->size += bed->got_header_size; 1251 1252 if (bed->want_got_plt) 1253 { 1254 s = bfd_make_section_with_flags (abfd, ".got.plt", flags); 1255 if (s == NULL 1256 || !bfd_set_section_alignment (abfd, s, 1257 bed->s->log_file_align)) 1258 return FALSE; 1259 htab->sgotplt = s; 1260 1261 /* Reserve room for the header. */ 1262 s->size += GOTPLT_HEADER_SIZE; 1263 } 1264 1265 if (bed->want_got_sym) 1266 { 1267 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got 1268 section. We don't do this in the linker script because we don't want 1269 to define the symbol if we are not creating a global offset 1270 table. */ 1271 h = _bfd_elf_define_linkage_sym (abfd, info, s_got, 1272 "_GLOBAL_OFFSET_TABLE_"); 1273 elf_hash_table (info)->hgot = h; 1274 if (h == NULL) 1275 return FALSE; 1276 } 1277 1278 return TRUE; 1279 } 1280 1281 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and 1282 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our 1283 hash table. */ 1284 1285 static bfd_boolean 1286 tilepro_elf_create_dynamic_sections (bfd *dynobj, 1287 struct bfd_link_info *info) 1288 { 1289 struct tilepro_elf_link_hash_table *htab; 1290 1291 htab = tilepro_elf_hash_table (info); 1292 BFD_ASSERT (htab != NULL); 1293 1294 if (!tilepro_elf_create_got_section (dynobj, info)) 1295 return FALSE; 1296 1297 if (!_bfd_elf_create_dynamic_sections (dynobj, info)) 1298 return FALSE; 1299 1300 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); 1301 if (!info->shared) 1302 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss"); 1303 1304 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss 1305 || (!info->shared && !htab->srelbss)) 1306 abort (); 1307 1308 return TRUE; 1309 } 1310 1311 /* Copy the extra info we tack onto an elf_link_hash_entry. */ 1312 1313 static void 1314 tilepro_elf_copy_indirect_symbol (struct bfd_link_info *info, 1315 struct elf_link_hash_entry *dir, 1316 struct elf_link_hash_entry *ind) 1317 { 1318 struct tilepro_elf_link_hash_entry *edir, *eind; 1319 1320 edir = (struct tilepro_elf_link_hash_entry *) dir; 1321 eind = (struct tilepro_elf_link_hash_entry *) ind; 1322 1323 if (eind->dyn_relocs != NULL) 1324 { 1325 if (edir->dyn_relocs != NULL) 1326 { 1327 struct tilepro_elf_dyn_relocs **pp; 1328 struct tilepro_elf_dyn_relocs *p; 1329 1330 /* Add reloc counts against the indirect sym to the direct sym 1331 list. Merge any entries against the same section. */ 1332 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) 1333 { 1334 struct tilepro_elf_dyn_relocs *q; 1335 1336 for (q = edir->dyn_relocs; q != NULL; q = q->next) 1337 if (q->sec == p->sec) 1338 { 1339 q->pc_count += p->pc_count; 1340 q->count += p->count; 1341 *pp = p->next; 1342 break; 1343 } 1344 if (q == NULL) 1345 pp = &p->next; 1346 } 1347 *pp = edir->dyn_relocs; 1348 } 1349 1350 edir->dyn_relocs = eind->dyn_relocs; 1351 eind->dyn_relocs = NULL; 1352 } 1353 1354 if (ind->root.type == bfd_link_hash_indirect 1355 && dir->got.refcount <= 0) 1356 { 1357 edir->tls_type = eind->tls_type; 1358 eind->tls_type = GOT_UNKNOWN; 1359 } 1360 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 1361 } 1362 1363 static int 1364 tilepro_tls_translate_to_le (int r_type) 1365 { 1366 switch (r_type) 1367 { 1368 case R_TILEPRO_IMM16_X0_TLS_GD: 1369 case R_TILEPRO_IMM16_X0_TLS_IE: 1370 return R_TILEPRO_IMM16_X0_TLS_LE; 1371 1372 case R_TILEPRO_IMM16_X1_TLS_GD: 1373 case R_TILEPRO_IMM16_X1_TLS_IE: 1374 return R_TILEPRO_IMM16_X1_TLS_LE; 1375 1376 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 1377 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 1378 return R_TILEPRO_IMM16_X0_TLS_LE_LO; 1379 1380 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 1381 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 1382 return R_TILEPRO_IMM16_X1_TLS_LE_LO; 1383 1384 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 1385 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 1386 return R_TILEPRO_IMM16_X0_TLS_LE_HI; 1387 1388 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 1389 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 1390 return R_TILEPRO_IMM16_X1_TLS_LE_HI; 1391 1392 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 1393 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 1394 return R_TILEPRO_IMM16_X0_TLS_LE_HA; 1395 1396 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 1397 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 1398 return R_TILEPRO_IMM16_X1_TLS_LE_HA; 1399 } 1400 return r_type; 1401 } 1402 1403 static int 1404 tilepro_tls_translate_to_ie (int r_type) 1405 { 1406 switch (r_type) 1407 { 1408 case R_TILEPRO_IMM16_X0_TLS_GD: 1409 case R_TILEPRO_IMM16_X0_TLS_IE: 1410 return R_TILEPRO_IMM16_X0_TLS_IE; 1411 1412 case R_TILEPRO_IMM16_X1_TLS_GD: 1413 case R_TILEPRO_IMM16_X1_TLS_IE: 1414 return R_TILEPRO_IMM16_X1_TLS_IE; 1415 1416 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 1417 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 1418 return R_TILEPRO_IMM16_X0_TLS_IE_LO; 1419 1420 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 1421 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 1422 return R_TILEPRO_IMM16_X1_TLS_IE_LO; 1423 1424 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 1425 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 1426 return R_TILEPRO_IMM16_X0_TLS_IE_HI; 1427 1428 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 1429 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 1430 return R_TILEPRO_IMM16_X1_TLS_IE_HI; 1431 1432 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 1433 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 1434 return R_TILEPRO_IMM16_X0_TLS_IE_HA; 1435 1436 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 1437 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 1438 return R_TILEPRO_IMM16_X1_TLS_IE_HA; 1439 } 1440 return r_type; 1441 } 1442 1443 static int 1444 tilepro_elf_tls_transition (struct bfd_link_info *info, int r_type, 1445 int is_local) 1446 { 1447 if (info->shared) 1448 return r_type; 1449 1450 if (is_local) 1451 return tilepro_tls_translate_to_le (r_type); 1452 else 1453 return tilepro_tls_translate_to_ie (r_type); 1454 } 1455 1456 /* Look through the relocs for a section during the first phase, and 1457 allocate space in the global offset table or procedure linkage 1458 table. */ 1459 1460 static bfd_boolean 1461 tilepro_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, 1462 asection *sec, const Elf_Internal_Rela *relocs) 1463 { 1464 struct tilepro_elf_link_hash_table *htab; 1465 Elf_Internal_Shdr *symtab_hdr; 1466 struct elf_link_hash_entry **sym_hashes; 1467 const Elf_Internal_Rela *rel; 1468 const Elf_Internal_Rela *rel_end; 1469 asection *sreloc; 1470 int num_relocs; 1471 1472 if (info->relocatable) 1473 return TRUE; 1474 1475 htab = tilepro_elf_hash_table (info); 1476 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 1477 sym_hashes = elf_sym_hashes (abfd); 1478 1479 sreloc = NULL; 1480 1481 num_relocs = sec->reloc_count; 1482 1483 BFD_ASSERT (is_tilepro_elf (abfd) || num_relocs == 0); 1484 1485 if (htab->elf.dynobj == NULL) 1486 htab->elf.dynobj = abfd; 1487 1488 rel_end = relocs + num_relocs; 1489 for (rel = relocs; rel < rel_end; rel++) 1490 { 1491 unsigned int r_type; 1492 unsigned long r_symndx; 1493 struct elf_link_hash_entry *h; 1494 int tls_type; 1495 1496 r_symndx = ELF32_R_SYM (rel->r_info); 1497 r_type = ELF32_R_TYPE (rel->r_info); 1498 1499 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) 1500 { 1501 (*_bfd_error_handler) (_("%B: bad symbol index: %d"), 1502 abfd, r_symndx); 1503 return FALSE; 1504 } 1505 1506 if (r_symndx < symtab_hdr->sh_info) 1507 h = NULL; 1508 else 1509 { 1510 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 1511 while (h->root.type == bfd_link_hash_indirect 1512 || h->root.type == bfd_link_hash_warning) 1513 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1514 } 1515 1516 r_type = tilepro_elf_tls_transition (info, r_type, h == NULL); 1517 switch (r_type) 1518 { 1519 case R_TILEPRO_IMM16_X0_TLS_LE: 1520 case R_TILEPRO_IMM16_X1_TLS_LE: 1521 case R_TILEPRO_IMM16_X0_TLS_LE_LO: 1522 case R_TILEPRO_IMM16_X1_TLS_LE_LO: 1523 case R_TILEPRO_IMM16_X0_TLS_LE_HI: 1524 case R_TILEPRO_IMM16_X1_TLS_LE_HI: 1525 case R_TILEPRO_IMM16_X0_TLS_LE_HA: 1526 case R_TILEPRO_IMM16_X1_TLS_LE_HA: 1527 if (info->shared) 1528 goto r_tilepro_plt32; 1529 break; 1530 1531 case R_TILEPRO_IMM16_X0_TLS_GD: 1532 case R_TILEPRO_IMM16_X1_TLS_GD: 1533 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 1534 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 1535 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 1536 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 1537 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 1538 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 1539 BFD_ASSERT (info->shared); 1540 tls_type = GOT_TLS_GD; 1541 goto have_got_reference; 1542 1543 case R_TILEPRO_IMM16_X0_TLS_IE: 1544 case R_TILEPRO_IMM16_X1_TLS_IE: 1545 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 1546 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 1547 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 1548 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 1549 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 1550 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 1551 tls_type = GOT_TLS_IE; 1552 if (info->shared) 1553 info->flags |= DF_STATIC_TLS; 1554 goto have_got_reference; 1555 1556 case R_TILEPRO_IMM16_X0_GOT: 1557 case R_TILEPRO_IMM16_X1_GOT: 1558 case R_TILEPRO_IMM16_X0_GOT_LO: 1559 case R_TILEPRO_IMM16_X1_GOT_LO: 1560 case R_TILEPRO_IMM16_X0_GOT_HI: 1561 case R_TILEPRO_IMM16_X1_GOT_HI: 1562 case R_TILEPRO_IMM16_X0_GOT_HA: 1563 case R_TILEPRO_IMM16_X1_GOT_HA: 1564 tls_type = GOT_NORMAL; 1565 /* Fall Through */ 1566 1567 have_got_reference: 1568 /* This symbol requires a global offset table entry. */ 1569 { 1570 int old_tls_type; 1571 1572 if (h != NULL) 1573 { 1574 h->got.refcount += 1; 1575 old_tls_type = tilepro_elf_hash_entry(h)->tls_type; 1576 } 1577 else 1578 { 1579 bfd_signed_vma *local_got_refcounts; 1580 1581 /* This is a global offset table entry for a local symbol. */ 1582 local_got_refcounts = elf_local_got_refcounts (abfd); 1583 if (local_got_refcounts == NULL) 1584 { 1585 bfd_size_type size; 1586 1587 size = symtab_hdr->sh_info; 1588 size *= (sizeof (bfd_signed_vma) + sizeof(char)); 1589 local_got_refcounts = ((bfd_signed_vma *) 1590 bfd_zalloc (abfd, size)); 1591 if (local_got_refcounts == NULL) 1592 return FALSE; 1593 elf_local_got_refcounts (abfd) = local_got_refcounts; 1594 _bfd_tilepro_elf_local_got_tls_type (abfd) 1595 = (char *) (local_got_refcounts + symtab_hdr->sh_info); 1596 } 1597 local_got_refcounts[r_symndx] += 1; 1598 old_tls_type = 1599 _bfd_tilepro_elf_local_got_tls_type (abfd) [r_symndx]; 1600 } 1601 1602 /* If a TLS symbol is accessed using IE at least once, 1603 there is no point to use dynamic model for it. */ 1604 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN 1605 && (old_tls_type != GOT_TLS_GD 1606 || tls_type != GOT_TLS_IE)) 1607 { 1608 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD) 1609 tls_type = old_tls_type; 1610 else 1611 { 1612 (*_bfd_error_handler) 1613 (_("%B: `%s' accessed both as normal and thread local symbol"), 1614 abfd, h ? h->root.root.string : "<local>"); 1615 return FALSE; 1616 } 1617 } 1618 1619 if (old_tls_type != tls_type) 1620 { 1621 if (h != NULL) 1622 tilepro_elf_hash_entry (h)->tls_type = tls_type; 1623 else 1624 _bfd_tilepro_elf_local_got_tls_type (abfd) [r_symndx] = 1625 tls_type; 1626 } 1627 } 1628 1629 if (htab->elf.sgot == NULL) 1630 { 1631 if (!tilepro_elf_create_got_section (htab->elf.dynobj, info)) 1632 return FALSE; 1633 } 1634 break; 1635 1636 case R_TILEPRO_TLS_GD_CALL: 1637 if (info->shared) 1638 { 1639 /* These are basically R_TILEPRO_JOFFLONG_X1_PLT relocs 1640 against __tls_get_addr. */ 1641 struct bfd_link_hash_entry *bh = NULL; 1642 if (! _bfd_generic_link_add_one_symbol (info, abfd, 1643 "__tls_get_addr", 0, 1644 bfd_und_section_ptr, 0, 1645 NULL, FALSE, FALSE, 1646 &bh)) 1647 return FALSE; 1648 h = (struct elf_link_hash_entry *) bh; 1649 } 1650 else 1651 break; 1652 /* Fall through */ 1653 1654 case R_TILEPRO_JOFFLONG_X1_PLT: 1655 /* This symbol requires a procedure linkage table entry. We 1656 actually build the entry in adjust_dynamic_symbol, 1657 because this might be a case of linking PIC code without 1658 linking in any dynamic objects, in which case we don't 1659 need to generate a procedure linkage table after all. */ 1660 1661 if (h != NULL) 1662 { 1663 h->needs_plt = 1; 1664 h->plt.refcount += 1; 1665 } 1666 break; 1667 1668 case R_TILEPRO_32_PCREL: 1669 case R_TILEPRO_16_PCREL: 1670 case R_TILEPRO_8_PCREL: 1671 case R_TILEPRO_IMM16_X0_PCREL: 1672 case R_TILEPRO_IMM16_X1_PCREL: 1673 case R_TILEPRO_IMM16_X0_LO_PCREL: 1674 case R_TILEPRO_IMM16_X1_LO_PCREL: 1675 case R_TILEPRO_IMM16_X0_HI_PCREL: 1676 case R_TILEPRO_IMM16_X1_HI_PCREL: 1677 case R_TILEPRO_IMM16_X0_HA_PCREL: 1678 case R_TILEPRO_IMM16_X1_HA_PCREL: 1679 if (h != NULL) 1680 h->non_got_ref = 1; 1681 1682 if (h != NULL 1683 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 1684 break; 1685 /* Fall through. */ 1686 1687 case R_TILEPRO_32: 1688 case R_TILEPRO_16: 1689 case R_TILEPRO_8: 1690 case R_TILEPRO_LO16: 1691 case R_TILEPRO_HI16: 1692 case R_TILEPRO_HA16: 1693 case R_TILEPRO_COPY: 1694 case R_TILEPRO_GLOB_DAT: 1695 case R_TILEPRO_JMP_SLOT: 1696 case R_TILEPRO_RELATIVE: 1697 case R_TILEPRO_BROFF_X1: 1698 case R_TILEPRO_JOFFLONG_X1: 1699 case R_TILEPRO_IMM8_X0: 1700 case R_TILEPRO_IMM8_Y0: 1701 case R_TILEPRO_IMM8_X1: 1702 case R_TILEPRO_IMM8_Y1: 1703 case R_TILEPRO_DEST_IMM8_X1: 1704 case R_TILEPRO_MT_IMM15_X1: 1705 case R_TILEPRO_MF_IMM15_X1: 1706 case R_TILEPRO_IMM16_X0: 1707 case R_TILEPRO_IMM16_X1: 1708 case R_TILEPRO_IMM16_X0_LO: 1709 case R_TILEPRO_IMM16_X1_LO: 1710 case R_TILEPRO_IMM16_X0_HI: 1711 case R_TILEPRO_IMM16_X1_HI: 1712 case R_TILEPRO_IMM16_X0_HA: 1713 case R_TILEPRO_IMM16_X1_HA: 1714 case R_TILEPRO_MMSTART_X0: 1715 case R_TILEPRO_MMEND_X0: 1716 case R_TILEPRO_MMSTART_X1: 1717 case R_TILEPRO_MMEND_X1: 1718 case R_TILEPRO_SHAMT_X0: 1719 case R_TILEPRO_SHAMT_X1: 1720 case R_TILEPRO_SHAMT_Y0: 1721 case R_TILEPRO_SHAMT_Y1: 1722 if (h != NULL) 1723 h->non_got_ref = 1; 1724 1725 r_tilepro_plt32: 1726 if (h != NULL && !info->shared) 1727 { 1728 /* We may need a .plt entry if the function this reloc 1729 refers to is in a shared lib. */ 1730 h->plt.refcount += 1; 1731 } 1732 1733 /* If we are creating a shared library, and this is a reloc 1734 against a global symbol, or a non PC relative reloc 1735 against a local symbol, then we need to copy the reloc 1736 into the shared library. However, if we are linking with 1737 -Bsymbolic, we do not need to copy a reloc against a 1738 global symbol which is defined in an object we are 1739 including in the link (i.e., DEF_REGULAR is set). At 1740 this point we have not seen all the input files, so it is 1741 possible that DEF_REGULAR is not set now but will be set 1742 later (it is never cleared). In case of a weak definition, 1743 DEF_REGULAR may be cleared later by a strong definition in 1744 a shared library. We account for that possibility below by 1745 storing information in the relocs_copied field of the hash 1746 table entry. A similar situation occurs when creating 1747 shared libraries and symbol visibility changes render the 1748 symbol local. 1749 1750 If on the other hand, we are creating an executable, we 1751 may need to keep relocations for symbols satisfied by a 1752 dynamic library if we manage to avoid copy relocs for the 1753 symbol. */ 1754 if ((info->shared 1755 && (sec->flags & SEC_ALLOC) != 0 1756 && (! tilepro_elf_howto_table[r_type].pc_relative 1757 || (h != NULL 1758 && (! info->symbolic 1759 || h->root.type == bfd_link_hash_defweak 1760 || !h->def_regular)))) 1761 || (!info->shared 1762 && (sec->flags & SEC_ALLOC) != 0 1763 && h != NULL 1764 && (h->root.type == bfd_link_hash_defweak 1765 || !h->def_regular))) 1766 { 1767 struct tilepro_elf_dyn_relocs *p; 1768 struct tilepro_elf_dyn_relocs **head; 1769 1770 /* When creating a shared object, we must copy these 1771 relocs into the output file. We create a reloc 1772 section in dynobj and make room for the reloc. */ 1773 if (sreloc == NULL) 1774 { 1775 sreloc = _bfd_elf_make_dynamic_reloc_section 1776 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE); 1777 1778 if (sreloc == NULL) 1779 return FALSE; 1780 } 1781 1782 /* If this is a global symbol, we count the number of 1783 relocations we need for this symbol. */ 1784 if (h != NULL) 1785 head = 1786 &((struct tilepro_elf_link_hash_entry *) h)->dyn_relocs; 1787 else 1788 { 1789 /* Track dynamic relocs needed for local syms too. 1790 We really need local syms available to do this 1791 easily. Oh well. */ 1792 1793 asection *s; 1794 void *vpp; 1795 Elf_Internal_Sym *isym; 1796 1797 isym = bfd_sym_from_r_symndx (&htab->sym_cache, 1798 abfd, r_symndx); 1799 if (isym == NULL) 1800 return FALSE; 1801 1802 s = bfd_section_from_elf_index (abfd, isym->st_shndx); 1803 if (s == NULL) 1804 s = sec; 1805 1806 vpp = &elf_section_data (s)->local_dynrel; 1807 head = (struct tilepro_elf_dyn_relocs **) vpp; 1808 } 1809 1810 p = *head; 1811 if (p == NULL || p->sec != sec) 1812 { 1813 bfd_size_type amt = sizeof *p; 1814 p = ((struct tilepro_elf_dyn_relocs *) 1815 bfd_alloc (htab->elf.dynobj, amt)); 1816 if (p == NULL) 1817 return FALSE; 1818 p->next = *head; 1819 *head = p; 1820 p->sec = sec; 1821 p->count = 0; 1822 p->pc_count = 0; 1823 } 1824 1825 p->count += 1; 1826 if (tilepro_elf_howto_table[r_type].pc_relative) 1827 p->pc_count += 1; 1828 } 1829 1830 break; 1831 1832 case R_TILEPRO_GNU_VTINHERIT: 1833 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 1834 return FALSE; 1835 break; 1836 1837 case R_TILEPRO_GNU_VTENTRY: 1838 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 1839 return FALSE; 1840 break; 1841 1842 default: 1843 break; 1844 } 1845 } 1846 1847 return TRUE; 1848 } 1849 1850 1851 static asection * 1852 tilepro_elf_gc_mark_hook (asection *sec, 1853 struct bfd_link_info *info, 1854 Elf_Internal_Rela *rel, 1855 struct elf_link_hash_entry *h, 1856 Elf_Internal_Sym *sym) 1857 { 1858 if (h != NULL) 1859 { 1860 switch (ELF32_R_TYPE (rel->r_info)) 1861 { 1862 case R_TILEPRO_GNU_VTINHERIT: 1863 case R_TILEPRO_GNU_VTENTRY: 1864 return NULL; 1865 } 1866 } 1867 1868 /* FIXME: The test here, in check_relocs and in relocate_section 1869 dealing with TLS optimization, ought to be !info->executable. */ 1870 if (info->shared) 1871 { 1872 switch (ELF32_R_TYPE (rel->r_info)) 1873 { 1874 case R_TILEPRO_TLS_GD_CALL: 1875 /* This reloc implicitly references __tls_get_addr. We know 1876 another reloc will reference the same symbol as the one 1877 on this reloc, so the real symbol and section will be 1878 gc marked when processing the other reloc. That lets 1879 us handle __tls_get_addr here. */ 1880 h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr", 1881 FALSE, FALSE, TRUE); 1882 BFD_ASSERT (h != NULL); 1883 h->mark = 1; 1884 if (h->u.weakdef != NULL) 1885 h->u.weakdef->mark = 1; 1886 sym = NULL; 1887 } 1888 } 1889 1890 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 1891 } 1892 1893 /* Update the got entry reference counts for the section being removed. */ 1894 static bfd_boolean 1895 tilepro_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, 1896 asection *sec, const Elf_Internal_Rela *relocs) 1897 { 1898 struct tilepro_elf_link_hash_table *htab; 1899 Elf_Internal_Shdr *symtab_hdr; 1900 struct elf_link_hash_entry **sym_hashes; 1901 bfd_signed_vma *local_got_refcounts; 1902 const Elf_Internal_Rela *rel, *relend; 1903 1904 if (info->relocatable) 1905 return TRUE; 1906 1907 BFD_ASSERT (is_tilepro_elf (abfd) || sec->reloc_count == 0); 1908 1909 elf_section_data (sec)->local_dynrel = NULL; 1910 1911 htab = tilepro_elf_hash_table (info); 1912 BFD_ASSERT (htab != NULL); 1913 symtab_hdr = &elf_symtab_hdr (abfd); 1914 sym_hashes = elf_sym_hashes (abfd); 1915 local_got_refcounts = elf_local_got_refcounts (abfd); 1916 1917 relend = relocs + sec->reloc_count; 1918 for (rel = relocs; rel < relend; rel++) 1919 { 1920 unsigned long r_symndx; 1921 unsigned int r_type; 1922 struct elf_link_hash_entry *h = NULL; 1923 1924 r_symndx = ELF32_R_SYM (rel->r_info); 1925 if (r_symndx >= symtab_hdr->sh_info) 1926 { 1927 struct tilepro_elf_link_hash_entry *eh; 1928 struct tilepro_elf_dyn_relocs **pp; 1929 struct tilepro_elf_dyn_relocs *p; 1930 1931 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 1932 while (h->root.type == bfd_link_hash_indirect 1933 || h->root.type == bfd_link_hash_warning) 1934 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1935 eh = (struct tilepro_elf_link_hash_entry *) h; 1936 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) 1937 if (p->sec == sec) 1938 { 1939 /* Everything must go for SEC. */ 1940 *pp = p->next; 1941 break; 1942 } 1943 } 1944 1945 r_type = ELF32_R_TYPE (rel->r_info); 1946 r_type = tilepro_elf_tls_transition (info, r_type, h != NULL); 1947 switch (r_type) 1948 { 1949 case R_TILEPRO_IMM16_X0_GOT: 1950 case R_TILEPRO_IMM16_X1_GOT: 1951 case R_TILEPRO_IMM16_X0_GOT_LO: 1952 case R_TILEPRO_IMM16_X1_GOT_LO: 1953 case R_TILEPRO_IMM16_X0_GOT_HI: 1954 case R_TILEPRO_IMM16_X1_GOT_HI: 1955 case R_TILEPRO_IMM16_X0_GOT_HA: 1956 case R_TILEPRO_IMM16_X1_GOT_HA: 1957 case R_TILEPRO_IMM16_X0_TLS_GD: 1958 case R_TILEPRO_IMM16_X1_TLS_GD: 1959 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 1960 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 1961 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 1962 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 1963 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 1964 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 1965 case R_TILEPRO_IMM16_X0_TLS_IE: 1966 case R_TILEPRO_IMM16_X1_TLS_IE: 1967 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 1968 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 1969 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 1970 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 1971 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 1972 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 1973 if (h != NULL) 1974 { 1975 if (h->got.refcount > 0) 1976 h->got.refcount--; 1977 } 1978 else 1979 { 1980 if (local_got_refcounts && 1981 local_got_refcounts[r_symndx] > 0) 1982 local_got_refcounts[r_symndx]--; 1983 } 1984 break; 1985 1986 case R_TILEPRO_32_PCREL: 1987 case R_TILEPRO_16_PCREL: 1988 case R_TILEPRO_8_PCREL: 1989 case R_TILEPRO_IMM16_X0_PCREL: 1990 case R_TILEPRO_IMM16_X1_PCREL: 1991 case R_TILEPRO_IMM16_X0_LO_PCREL: 1992 case R_TILEPRO_IMM16_X1_LO_PCREL: 1993 case R_TILEPRO_IMM16_X0_HI_PCREL: 1994 case R_TILEPRO_IMM16_X1_HI_PCREL: 1995 case R_TILEPRO_IMM16_X0_HA_PCREL: 1996 case R_TILEPRO_IMM16_X1_HA_PCREL: 1997 if (h != NULL 1998 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 1999 break; 2000 /* Fall through. */ 2001 2002 case R_TILEPRO_32: 2003 case R_TILEPRO_16: 2004 case R_TILEPRO_8: 2005 case R_TILEPRO_LO16: 2006 case R_TILEPRO_HI16: 2007 case R_TILEPRO_HA16: 2008 case R_TILEPRO_COPY: 2009 case R_TILEPRO_GLOB_DAT: 2010 case R_TILEPRO_JMP_SLOT: 2011 case R_TILEPRO_RELATIVE: 2012 case R_TILEPRO_BROFF_X1: 2013 case R_TILEPRO_JOFFLONG_X1: 2014 case R_TILEPRO_IMM8_X0: 2015 case R_TILEPRO_IMM8_Y0: 2016 case R_TILEPRO_IMM8_X1: 2017 case R_TILEPRO_IMM8_Y1: 2018 case R_TILEPRO_DEST_IMM8_X1: 2019 case R_TILEPRO_MT_IMM15_X1: 2020 case R_TILEPRO_MF_IMM15_X1: 2021 case R_TILEPRO_IMM16_X0: 2022 case R_TILEPRO_IMM16_X1: 2023 case R_TILEPRO_IMM16_X0_LO: 2024 case R_TILEPRO_IMM16_X1_LO: 2025 case R_TILEPRO_IMM16_X0_HI: 2026 case R_TILEPRO_IMM16_X1_HI: 2027 case R_TILEPRO_IMM16_X0_HA: 2028 case R_TILEPRO_IMM16_X1_HA: 2029 case R_TILEPRO_MMSTART_X0: 2030 case R_TILEPRO_MMEND_X0: 2031 case R_TILEPRO_MMSTART_X1: 2032 case R_TILEPRO_MMEND_X1: 2033 case R_TILEPRO_SHAMT_X0: 2034 case R_TILEPRO_SHAMT_X1: 2035 case R_TILEPRO_SHAMT_Y0: 2036 case R_TILEPRO_SHAMT_Y1: 2037 if (info->shared) 2038 break; 2039 /* Fall through. */ 2040 2041 case R_TILEPRO_JOFFLONG_X1_PLT: 2042 if (h != NULL) 2043 { 2044 if (h->plt.refcount > 0) 2045 h->plt.refcount--; 2046 } 2047 break; 2048 2049 default: 2050 break; 2051 } 2052 } 2053 2054 return TRUE; 2055 } 2056 2057 /* Adjust a symbol defined by a dynamic object and referenced by a 2058 regular object. The current definition is in some section of the 2059 dynamic object, but we're not including those sections. We have to 2060 change the definition to something the rest of the link can 2061 understand. */ 2062 2063 static bfd_boolean 2064 tilepro_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 2065 struct elf_link_hash_entry *h) 2066 { 2067 struct tilepro_elf_link_hash_table *htab; 2068 struct tilepro_elf_link_hash_entry * eh; 2069 struct tilepro_elf_dyn_relocs *p; 2070 asection *s; 2071 2072 htab = tilepro_elf_hash_table (info); 2073 BFD_ASSERT (htab != NULL); 2074 2075 /* Make sure we know what is going on here. */ 2076 BFD_ASSERT (htab->elf.dynobj != NULL 2077 && (h->needs_plt 2078 || h->u.weakdef != NULL 2079 || (h->def_dynamic 2080 && h->ref_regular 2081 && !h->def_regular))); 2082 2083 /* If this is a function, put it in the procedure linkage table. We 2084 will fill in the contents of the procedure linkage table later 2085 (although we could actually do it here). */ 2086 if (h->type == STT_FUNC || h->needs_plt) 2087 { 2088 if (h->plt.refcount <= 0 2089 || SYMBOL_CALLS_LOCAL (info, h) 2090 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT 2091 && h->root.type == bfd_link_hash_undefweak)) 2092 { 2093 /* This case can occur if we saw a R_TILEPRO_JOFFLONG_X1_PLT 2094 reloc in an input file, but the symbol was never referred 2095 to by a dynamic object, or if all references were garbage 2096 collected. In such a case, we don't actually need to build 2097 a procedure linkage table, and we can just do a 2098 R_TILEPRO_JOFFLONG_X1 relocation instead. */ 2099 h->plt.offset = (bfd_vma) -1; 2100 h->needs_plt = 0; 2101 } 2102 2103 return TRUE; 2104 } 2105 else 2106 h->plt.offset = (bfd_vma) -1; 2107 2108 /* If this is a weak symbol, and there is a real definition, the 2109 processor independent code will have arranged for us to see the 2110 real definition first, and we can just use the same value. */ 2111 if (h->u.weakdef != NULL) 2112 { 2113 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 2114 || h->u.weakdef->root.type == bfd_link_hash_defweak); 2115 h->root.u.def.section = h->u.weakdef->root.u.def.section; 2116 h->root.u.def.value = h->u.weakdef->root.u.def.value; 2117 return TRUE; 2118 } 2119 2120 /* This is a reference to a symbol defined by a dynamic object which 2121 is not a function. */ 2122 2123 /* If we are creating a shared library, we must presume that the 2124 only references to the symbol are via the global offset table. 2125 For such cases we need not do anything here; the relocations will 2126 be handled correctly by relocate_section. */ 2127 if (info->shared) 2128 return TRUE; 2129 2130 /* If there are no references to this symbol that do not use the 2131 GOT, we don't need to generate a copy reloc. */ 2132 if (!h->non_got_ref) 2133 return TRUE; 2134 2135 /* If -z nocopyreloc was given, we won't generate them either. */ 2136 if (info->nocopyreloc) 2137 { 2138 h->non_got_ref = 0; 2139 return TRUE; 2140 } 2141 2142 eh = (struct tilepro_elf_link_hash_entry *) h; 2143 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2144 { 2145 s = p->sec->output_section; 2146 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2147 break; 2148 } 2149 2150 /* If we didn't find any dynamic relocs in read-only sections, then 2151 we'll be keeping the dynamic relocs and avoiding the copy reloc. */ 2152 if (p == NULL) 2153 { 2154 h->non_got_ref = 0; 2155 return TRUE; 2156 } 2157 2158 /* We must allocate the symbol in our .dynbss section, which will 2159 become part of the .bss section of the executable. There will be 2160 an entry for this symbol in the .dynsym section. The dynamic 2161 object will contain position independent code, so all references 2162 from the dynamic object to this symbol will go through the global 2163 offset table. The dynamic linker will use the .dynsym entry to 2164 determine the address it must put in the global offset table, so 2165 both the dynamic object and the regular object will refer to the 2166 same memory location for the variable. */ 2167 2168 /* We must generate a R_TILEPRO_COPY reloc to tell the dynamic linker 2169 to copy the initial value out of the dynamic object and into the 2170 runtime process image. We need to remember the offset into the 2171 .rel.bss section we are going to use. */ 2172 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) 2173 { 2174 htab->srelbss->size += TILEPRO_ELF_RELA_BYTES; 2175 h->needs_copy = 1; 2176 } 2177 2178 return _bfd_elf_adjust_dynamic_copy (h, htab->sdynbss); 2179 } 2180 2181 /* Allocate space in .plt, .got and associated reloc sections for 2182 dynamic relocs. */ 2183 2184 static bfd_boolean 2185 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) 2186 { 2187 struct bfd_link_info *info; 2188 struct tilepro_elf_link_hash_table *htab; 2189 struct tilepro_elf_link_hash_entry *eh; 2190 struct tilepro_elf_dyn_relocs *p; 2191 2192 if (h->root.type == bfd_link_hash_indirect) 2193 return TRUE; 2194 2195 info = (struct bfd_link_info *) inf; 2196 htab = tilepro_elf_hash_table (info); 2197 BFD_ASSERT (htab != NULL); 2198 2199 if (htab->elf.dynamic_sections_created 2200 && h->plt.refcount > 0) 2201 { 2202 /* Make sure this symbol is output as a dynamic symbol. 2203 Undefined weak syms won't yet be marked as dynamic. */ 2204 if (h->dynindx == -1 2205 && !h->forced_local) 2206 { 2207 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2208 return FALSE; 2209 } 2210 2211 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) 2212 { 2213 asection *s = htab->elf.splt; 2214 2215 /* Allocate room for the header. */ 2216 if (s->size == 0) 2217 { 2218 s->size = PLT_HEADER_SIZE; 2219 } 2220 2221 h->plt.offset = s->size; 2222 2223 /* If this symbol is not defined in a regular file, and we are 2224 not generating a shared library, then set the symbol to this 2225 location in the .plt. This is required to make function 2226 pointers compare as equal between the normal executable and 2227 the shared library. */ 2228 if (! info->shared 2229 && !h->def_regular) 2230 { 2231 h->root.u.def.section = s; 2232 h->root.u.def.value = h->plt.offset; 2233 } 2234 2235 /* Make room for this entry. */ 2236 s->size += PLT_ENTRY_SIZE; 2237 2238 /* We also need to make an entry in the .got.plt section. */ 2239 htab->elf.sgotplt->size += GOT_ENTRY_SIZE; 2240 2241 /* We also need to make an entry in the .rela.plt section. */ 2242 htab->elf.srelplt->size += TILEPRO_ELF_RELA_BYTES; 2243 } 2244 else 2245 { 2246 h->plt.offset = (bfd_vma) -1; 2247 h->needs_plt = 0; 2248 } 2249 } 2250 else 2251 { 2252 h->plt.offset = (bfd_vma) -1; 2253 h->needs_plt = 0; 2254 } 2255 2256 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE 2257 requiring no TLS entry. */ 2258 if (h->got.refcount > 0 2259 && !info->shared 2260 && h->dynindx == -1 2261 && tilepro_elf_hash_entry(h)->tls_type == GOT_TLS_IE) 2262 h->got.offset = (bfd_vma) -1; 2263 else if (h->got.refcount > 0) 2264 { 2265 asection *s; 2266 bfd_boolean dyn; 2267 int tls_type = tilepro_elf_hash_entry(h)->tls_type; 2268 2269 /* Make sure this symbol is output as a dynamic symbol. 2270 Undefined weak syms won't yet be marked as dynamic. */ 2271 if (h->dynindx == -1 2272 && !h->forced_local) 2273 { 2274 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2275 return FALSE; 2276 } 2277 2278 s = htab->elf.sgot; 2279 h->got.offset = s->size; 2280 s->size += TILEPRO_BYTES_PER_WORD; 2281 /* R_TILEPRO_IMM16_Xn_TLS_GD entries need 2 consecutive GOT slots. */ 2282 if (tls_type == GOT_TLS_GD) 2283 s->size += TILEPRO_BYTES_PER_WORD; 2284 dyn = htab->elf.dynamic_sections_created; 2285 /* R_TILEPRO_IMM16_Xn_TLS_IE_xxx needs one dynamic relocation, 2286 R_TILEPRO_IMM16_Xn_TLS_GD_xxx needs two if local symbol and two if 2287 global. */ 2288 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE) 2289 htab->elf.srelgot->size += 2 * TILEPRO_ELF_RELA_BYTES; 2290 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)) 2291 htab->elf.srelgot->size += TILEPRO_ELF_RELA_BYTES; 2292 } 2293 else 2294 h->got.offset = (bfd_vma) -1; 2295 2296 eh = (struct tilepro_elf_link_hash_entry *) h; 2297 if (eh->dyn_relocs == NULL) 2298 return TRUE; 2299 2300 /* In the shared -Bsymbolic case, discard space allocated for 2301 dynamic pc-relative relocs against symbols which turn out to be 2302 defined in regular objects. For the normal shared case, discard 2303 space for pc-relative relocs that have become local due to symbol 2304 visibility changes. */ 2305 2306 if (info->shared) 2307 { 2308 if (SYMBOL_CALLS_LOCAL (info, h)) 2309 { 2310 struct tilepro_elf_dyn_relocs **pp; 2311 2312 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) 2313 { 2314 p->count -= p->pc_count; 2315 p->pc_count = 0; 2316 if (p->count == 0) 2317 *pp = p->next; 2318 else 2319 pp = &p->next; 2320 } 2321 } 2322 2323 /* Also discard relocs on undefined weak syms with non-default 2324 visibility. */ 2325 if (eh->dyn_relocs != NULL 2326 && h->root.type == bfd_link_hash_undefweak) 2327 { 2328 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) 2329 eh->dyn_relocs = NULL; 2330 2331 /* Make sure undefined weak symbols are output as a dynamic 2332 symbol in PIEs. */ 2333 else if (h->dynindx == -1 2334 && !h->forced_local) 2335 { 2336 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2337 return FALSE; 2338 } 2339 } 2340 } 2341 else 2342 { 2343 /* For the non-shared case, discard space for relocs against 2344 symbols which turn out to need copy relocs or are not 2345 dynamic. */ 2346 2347 if (!h->non_got_ref 2348 && ((h->def_dynamic 2349 && !h->def_regular) 2350 || (htab->elf.dynamic_sections_created 2351 && (h->root.type == bfd_link_hash_undefweak 2352 || h->root.type == bfd_link_hash_undefined)))) 2353 { 2354 /* Make sure this symbol is output as a dynamic symbol. 2355 Undefined weak syms won't yet be marked as dynamic. */ 2356 if (h->dynindx == -1 2357 && !h->forced_local) 2358 { 2359 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2360 return FALSE; 2361 } 2362 2363 /* If that succeeded, we know we'll be keeping all the 2364 relocs. */ 2365 if (h->dynindx != -1) 2366 goto keep; 2367 } 2368 2369 eh->dyn_relocs = NULL; 2370 2371 keep: ; 2372 } 2373 2374 /* Finally, allocate space. */ 2375 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2376 { 2377 asection *sreloc = elf_section_data (p->sec)->sreloc; 2378 sreloc->size += p->count * TILEPRO_ELF_RELA_BYTES; 2379 } 2380 2381 return TRUE; 2382 } 2383 2384 /* Find any dynamic relocs that apply to read-only sections. */ 2385 2386 static bfd_boolean 2387 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) 2388 { 2389 struct tilepro_elf_link_hash_entry *eh; 2390 struct tilepro_elf_dyn_relocs *p; 2391 2392 eh = (struct tilepro_elf_link_hash_entry *) h; 2393 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2394 { 2395 asection *s = p->sec->output_section; 2396 2397 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2398 { 2399 struct bfd_link_info *info = (struct bfd_link_info *) inf; 2400 2401 info->flags |= DF_TEXTREL; 2402 2403 /* Not an error, just cut short the traversal. */ 2404 return FALSE; 2405 } 2406 } 2407 return TRUE; 2408 } 2409 2410 /* Return true if the dynamic symbol for a given section should be 2411 omitted when creating a shared library. */ 2412 2413 static bfd_boolean 2414 tilepro_elf_omit_section_dynsym (bfd *output_bfd, 2415 struct bfd_link_info *info, 2416 asection *p) 2417 { 2418 /* We keep the .got section symbol so that explicit relocations 2419 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode 2420 can be turned into relocations against the .got symbol. */ 2421 if (strcmp (p->name, ".got") == 0) 2422 return FALSE; 2423 2424 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p); 2425 } 2426 2427 /* Set the sizes of the dynamic sections. */ 2428 2429 #define ELF32_DYNAMIC_INTERPRETER "/lib/ld.so.1" 2430 2431 static bfd_boolean 2432 tilepro_elf_size_dynamic_sections (bfd *output_bfd, 2433 struct bfd_link_info *info) 2434 { 2435 (void)output_bfd; 2436 2437 struct tilepro_elf_link_hash_table *htab; 2438 bfd *dynobj; 2439 asection *s; 2440 bfd *ibfd; 2441 2442 htab = tilepro_elf_hash_table (info); 2443 BFD_ASSERT (htab != NULL); 2444 dynobj = htab->elf.dynobj; 2445 BFD_ASSERT (dynobj != NULL); 2446 2447 if (elf_hash_table (info)->dynamic_sections_created) 2448 { 2449 /* Set the contents of the .interp section to the interpreter. */ 2450 if (info->executable) 2451 { 2452 s = bfd_get_linker_section (dynobj, ".interp"); 2453 BFD_ASSERT (s != NULL); 2454 s->size = sizeof ELF32_DYNAMIC_INTERPRETER; 2455 s->contents = (unsigned char *) ELF32_DYNAMIC_INTERPRETER; 2456 } 2457 } 2458 2459 /* Set up .got offsets for local syms, and space for local dynamic 2460 relocs. */ 2461 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) 2462 { 2463 bfd_signed_vma *local_got; 2464 bfd_signed_vma *end_local_got; 2465 char *local_tls_type; 2466 bfd_size_type locsymcount; 2467 Elf_Internal_Shdr *symtab_hdr; 2468 asection *srel; 2469 2470 if (! is_tilepro_elf (ibfd)) 2471 continue; 2472 2473 for (s = ibfd->sections; s != NULL; s = s->next) 2474 { 2475 struct tilepro_elf_dyn_relocs *p; 2476 2477 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) 2478 { 2479 if (!bfd_is_abs_section (p->sec) 2480 && bfd_is_abs_section (p->sec->output_section)) 2481 { 2482 /* Input section has been discarded, either because 2483 it is a copy of a linkonce section or due to 2484 linker script /DISCARD/, so we'll be discarding 2485 the relocs too. */ 2486 } 2487 else if (p->count != 0) 2488 { 2489 srel = elf_section_data (p->sec)->sreloc; 2490 srel->size += p->count * TILEPRO_ELF_RELA_BYTES; 2491 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 2492 info->flags |= DF_TEXTREL; 2493 } 2494 } 2495 } 2496 2497 local_got = elf_local_got_refcounts (ibfd); 2498 if (!local_got) 2499 continue; 2500 2501 symtab_hdr = &elf_symtab_hdr (ibfd); 2502 locsymcount = symtab_hdr->sh_info; 2503 end_local_got = local_got + locsymcount; 2504 local_tls_type = _bfd_tilepro_elf_local_got_tls_type (ibfd); 2505 s = htab->elf.sgot; 2506 srel = htab->elf.srelgot; 2507 for (; local_got < end_local_got; ++local_got, ++local_tls_type) 2508 { 2509 if (*local_got > 0) 2510 { 2511 *local_got = s->size; 2512 s->size += TILEPRO_BYTES_PER_WORD; 2513 if (*local_tls_type == GOT_TLS_GD) 2514 s->size += TILEPRO_BYTES_PER_WORD; 2515 if (info->shared 2516 || *local_tls_type == GOT_TLS_GD 2517 || *local_tls_type == GOT_TLS_IE) 2518 srel->size += TILEPRO_ELF_RELA_BYTES; 2519 } 2520 else 2521 *local_got = (bfd_vma) -1; 2522 } 2523 } 2524 2525 /* Allocate global sym .plt and .got entries, and space for global 2526 sym dynamic relocs. */ 2527 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); 2528 2529 if (elf_hash_table (info)->dynamic_sections_created) 2530 { 2531 /* If the .got section is more than 0x8000 bytes, we add 2532 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16 2533 bit relocations have a greater chance of working. */ 2534 if (htab->elf.sgot->size >= 0x8000 2535 && elf_hash_table (info)->hgot->root.u.def.value == 0) 2536 elf_hash_table (info)->hgot->root.u.def.value = 0x8000; 2537 } 2538 2539 if (htab->elf.sgotplt) 2540 { 2541 struct elf_link_hash_entry *got; 2542 got = elf_link_hash_lookup (elf_hash_table (info), 2543 "_GLOBAL_OFFSET_TABLE_", 2544 FALSE, FALSE, FALSE); 2545 2546 /* Don't allocate .got.plt section if there are no GOT nor PLT 2547 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */ 2548 if ((got == NULL 2549 || !got->ref_regular_nonweak) 2550 && (htab->elf.sgotplt->size 2551 == GOTPLT_HEADER_SIZE) 2552 && (htab->elf.splt == NULL 2553 || htab->elf.splt->size == 0) 2554 && (htab->elf.sgot == NULL 2555 || (htab->elf.sgot->size 2556 == get_elf_backend_data (output_bfd)->got_header_size))) 2557 htab->elf.sgotplt->size = 0; 2558 } 2559 2560 /* The check_relocs and adjust_dynamic_symbol entry points have 2561 determined the sizes of the various dynamic sections. Allocate 2562 memory for them. */ 2563 for (s = dynobj->sections; s != NULL; s = s->next) 2564 { 2565 if ((s->flags & SEC_LINKER_CREATED) == 0) 2566 continue; 2567 2568 if (s == htab->elf.splt 2569 || s == htab->elf.sgot 2570 || s == htab->elf.sgotplt 2571 || s == htab->sdynbss) 2572 { 2573 /* Strip this section if we don't need it; see the 2574 comment below. */ 2575 } 2576 else if (strncmp (s->name, ".rela", 5) == 0) 2577 { 2578 if (s->size != 0) 2579 { 2580 /* We use the reloc_count field as a counter if we need 2581 to copy relocs into the output file. */ 2582 s->reloc_count = 0; 2583 } 2584 } 2585 else 2586 { 2587 /* It's not one of our sections. */ 2588 continue; 2589 } 2590 2591 if (s->size == 0) 2592 { 2593 /* If we don't need this section, strip it from the 2594 output file. This is mostly to handle .rela.bss and 2595 .rela.plt. We must create both sections in 2596 create_dynamic_sections, because they must be created 2597 before the linker maps input sections to output 2598 sections. The linker does that before 2599 adjust_dynamic_symbol is called, and it is that 2600 function which decides whether anything needs to go 2601 into these sections. */ 2602 s->flags |= SEC_EXCLUDE; 2603 continue; 2604 } 2605 2606 if ((s->flags & SEC_HAS_CONTENTS) == 0) 2607 continue; 2608 2609 /* Allocate memory for the section contents. Zero the memory 2610 for the benefit of .rela.plt, which has 4 unused entries 2611 at the beginning, and we don't want garbage. */ 2612 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); 2613 if (s->contents == NULL) 2614 return FALSE; 2615 } 2616 2617 if (elf_hash_table (info)->dynamic_sections_created) 2618 { 2619 /* Add some entries to the .dynamic section. We fill in the 2620 values later, in tilepro_elf_finish_dynamic_sections, but we 2621 must add the entries now so that we get the correct size for 2622 the .dynamic section. The DT_DEBUG entry is filled in by the 2623 dynamic linker and used by the debugger. */ 2624 #define add_dynamic_entry(TAG, VAL) \ 2625 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 2626 2627 if (info->executable) 2628 { 2629 if (!add_dynamic_entry (DT_DEBUG, 0)) 2630 return FALSE; 2631 } 2632 2633 if (htab->elf.srelplt->size != 0) 2634 { 2635 if (!add_dynamic_entry (DT_PLTGOT, 0) 2636 || !add_dynamic_entry (DT_PLTRELSZ, 0) 2637 || !add_dynamic_entry (DT_PLTREL, DT_RELA) 2638 || !add_dynamic_entry (DT_JMPREL, 0)) 2639 return FALSE; 2640 } 2641 2642 if (!add_dynamic_entry (DT_RELA, 0) 2643 || !add_dynamic_entry (DT_RELASZ, 0) 2644 || !add_dynamic_entry (DT_RELAENT, TILEPRO_ELF_RELA_BYTES)) 2645 return FALSE; 2646 2647 /* If any dynamic relocs apply to a read-only section, 2648 then we need a DT_TEXTREL entry. */ 2649 if ((info->flags & DF_TEXTREL) == 0) 2650 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); 2651 2652 if (info->flags & DF_TEXTREL) 2653 { 2654 if (!add_dynamic_entry (DT_TEXTREL, 0)) 2655 return FALSE; 2656 } 2657 } 2658 #undef add_dynamic_entry 2659 2660 return TRUE; 2661 } 2662 2663 /* Return the base VMA address which should be subtracted from real addresses 2664 when resolving @dtpoff relocation. 2665 This is PT_TLS segment p_vaddr. */ 2666 2667 static bfd_vma 2668 dtpoff_base (struct bfd_link_info *info) 2669 { 2670 /* If tls_sec is NULL, we should have signalled an error already. */ 2671 if (elf_hash_table (info)->tls_sec == NULL) 2672 return 0; 2673 return elf_hash_table (info)->tls_sec->vma; 2674 } 2675 2676 /* Return the relocation value for R_TILEPRO_TLS_TPOFF32. */ 2677 2678 static bfd_vma 2679 tpoff (struct bfd_link_info *info, bfd_vma address) 2680 { 2681 struct elf_link_hash_table *htab = elf_hash_table (info); 2682 2683 /* If tls_sec is NULL, we should have signalled an error already. */ 2684 if (htab->tls_sec == NULL) 2685 return 0; 2686 2687 return (address - htab->tls_sec->vma); 2688 } 2689 2690 /* Replace the MASK bits in ADDR with those in INSN, for the next 2691 TILEPRO_BUNDLE_SIZE_IN_BYTES bytes. */ 2692 2693 static void 2694 tilepro_replace_insn (bfd_byte *addr, const bfd_byte *mask, 2695 const bfd_byte *insn) 2696 { 2697 int i; 2698 for (i = 0; i < TILEPRO_BUNDLE_SIZE_IN_BYTES; i++) 2699 { 2700 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]); 2701 } 2702 } 2703 2704 /* Mask to extract the bits corresponding to an instruction in a 2705 specific pipe of a bundle. */ 2706 static const bfd_byte insn_mask_X1[] = { 2707 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x7f 2708 }; 2709 2710 /* Mask to extract the bits corresponding to an instruction in a 2711 specific pipe of a bundle, minus the destination operand and the 2712 first source operand. */ 2713 static const bfd_byte insn_mask_X0_no_dest_no_srca[] = { 2714 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00 2715 }; 2716 2717 static const bfd_byte insn_mask_X1_no_dest_no_srca[] = { 2718 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x7f 2719 }; 2720 2721 static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = { 2722 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00 2723 }; 2724 2725 static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = { 2726 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x78 2727 }; 2728 2729 /* Mask to extract the first source operand of an instruction. */ 2730 static const bfd_byte srca_mask_X0[] = { 2731 0xc0, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 2732 }; 2733 2734 static const bfd_byte srca_mask_X1[] = { 2735 0x00, 0x00, 0x00, 0x00, 0xe0, 0x07, 0x00, 0x00 2736 }; 2737 2738 /* Various instructions synthesized to support tls references. */ 2739 2740 /* move r0, r0 in the X1 pipe, used for tls le. */ 2741 static const bfd_byte insn_tls_le_move_X1[] = { 2742 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x33, 0x08 2743 }; 2744 2745 /* move r0, zero in the X0 and X1 pipe, used for tls le. */ 2746 static const bfd_byte insn_tls_le_move_zero_X0X1[] = { 2747 0xc0, 0xff, 0xcf, 0x00, 0xe0, 0xff, 0x33, 0x08 2748 }; 2749 2750 /* lw r0, r0 in the X1 pipe, used for tls ie. */ 2751 static const bfd_byte insn_tls_ie_lw_X1[] = { 2752 0x00, 0x00, 0x00, 0x00, 0x00, 0x70, 0x0b, 0x40 2753 }; 2754 2755 /* add r0, r0, tp in various pipes, used for tls ie. */ 2756 static const bfd_byte insn_tls_ie_add_X0X1[] = { 2757 0x00, 0x50, 0x0f, 0x00, 0x00, 0xa8, 0x07, 0x08 2758 }; 2759 static const bfd_byte insn_tls_ie_add_Y0Y1[] = { 2760 0x00, 0x50, 0x03, 0x08, 0x00, 0xa8, 0x01, 0x8c 2761 }; 2762 2763 /* move r0, r0 in various pipes, used for tls gd. */ 2764 static const bfd_byte insn_tls_gd_add_X0X1[] = { 2765 0x00, 0xf0, 0xcf, 0x00, 0x00, 0xf8, 0x33, 0x08 2766 }; 2767 static const bfd_byte insn_tls_gd_add_Y0Y1[] = { 2768 0x00, 0xf0, 0x0b, 0x18, 0x00, 0xf8, 0x05, 0x9c 2769 }; 2770 2771 /* Relocate an TILEPRO ELF section. 2772 2773 The RELOCATE_SECTION function is called by the new ELF backend linker 2774 to handle the relocations for a section. 2775 2776 The relocs are always passed as Rela structures. 2777 2778 This function is responsible for adjusting the section contents as 2779 necessary, and (if generating a relocatable output file) adjusting 2780 the reloc addend as necessary. 2781 2782 This function does not have to worry about setting the reloc 2783 address or the reloc symbol index. 2784 2785 LOCAL_SYMS is a pointer to the swapped in local symbols. 2786 2787 LOCAL_SECTIONS is an array giving the section in the input file 2788 corresponding to the st_shndx field of each local symbol. 2789 2790 The global hash table entry for the global symbols can be found 2791 via elf_sym_hashes (input_bfd). 2792 2793 When generating relocatable output, this function must handle 2794 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 2795 going to be the section symbol corresponding to the output 2796 section, which means that the addend must be adjusted 2797 accordingly. */ 2798 2799 static bfd_boolean 2800 tilepro_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, 2801 bfd *input_bfd, asection *input_section, 2802 bfd_byte *contents, Elf_Internal_Rela *relocs, 2803 Elf_Internal_Sym *local_syms, 2804 asection **local_sections) 2805 { 2806 struct tilepro_elf_link_hash_table *htab; 2807 Elf_Internal_Shdr *symtab_hdr; 2808 struct elf_link_hash_entry **sym_hashes; 2809 bfd_vma *local_got_offsets; 2810 bfd_vma got_base; 2811 asection *sreloc; 2812 Elf_Internal_Rela *rel; 2813 Elf_Internal_Rela *relend; 2814 int num_relocs; 2815 2816 htab = tilepro_elf_hash_table (info); 2817 BFD_ASSERT (htab != NULL); 2818 symtab_hdr = &elf_symtab_hdr (input_bfd); 2819 sym_hashes = elf_sym_hashes (input_bfd); 2820 local_got_offsets = elf_local_got_offsets (input_bfd); 2821 2822 if (elf_hash_table (info)->hgot == NULL) 2823 got_base = 0; 2824 else 2825 got_base = elf_hash_table (info)->hgot->root.u.def.value; 2826 2827 sreloc = elf_section_data (input_section)->sreloc; 2828 2829 rel = relocs; 2830 num_relocs = input_section->reloc_count; 2831 relend = relocs + num_relocs; 2832 for (; rel < relend; rel++) 2833 { 2834 int r_type, tls_type; 2835 bfd_boolean is_tls_iele, is_tls_le; 2836 reloc_howto_type *howto; 2837 unsigned long r_symndx; 2838 struct elf_link_hash_entry *h; 2839 Elf_Internal_Sym *sym; 2840 tilepro_create_func create_func; 2841 asection *sec; 2842 bfd_vma relocation; 2843 bfd_reloc_status_type r; 2844 const char *name; 2845 bfd_vma off; 2846 bfd_boolean is_plt = FALSE; 2847 2848 bfd_boolean unresolved_reloc; 2849 2850 r_type = ELF32_R_TYPE (rel->r_info); 2851 if (r_type == R_TILEPRO_GNU_VTINHERIT 2852 || r_type == R_TILEPRO_GNU_VTENTRY) 2853 continue; 2854 2855 if ((unsigned int)r_type >= NELEMS(tilepro_elf_howto_table)) 2856 { 2857 /* Not clear if we need to check here, but just be paranoid. */ 2858 (*_bfd_error_handler) 2859 (_("%B: unrecognized relocation (0x%x) in section `%A'"), 2860 input_bfd, r_type, input_section); 2861 bfd_set_error (bfd_error_bad_value); 2862 return FALSE; 2863 } 2864 2865 howto = tilepro_elf_howto_table + r_type; 2866 2867 /* This is a final link. */ 2868 r_symndx = ELF32_R_SYM (rel->r_info); 2869 h = NULL; 2870 sym = NULL; 2871 sec = NULL; 2872 unresolved_reloc = FALSE; 2873 if (r_symndx < symtab_hdr->sh_info) 2874 { 2875 sym = local_syms + r_symndx; 2876 sec = local_sections[r_symndx]; 2877 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2878 } 2879 else 2880 { 2881 bfd_boolean warned; 2882 2883 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 2884 r_symndx, symtab_hdr, sym_hashes, 2885 h, sec, relocation, 2886 unresolved_reloc, warned); 2887 if (warned) 2888 { 2889 /* To avoid generating warning messages about truncated 2890 relocations, set the relocation's address to be the same as 2891 the start of this section. */ 2892 if (input_section->output_section != NULL) 2893 relocation = input_section->output_section->vma; 2894 else 2895 relocation = 0; 2896 } 2897 } 2898 2899 if (sec != NULL && discarded_section (sec)) 2900 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 2901 rel, 1, relend, howto, 0, contents); 2902 2903 if (info->relocatable) 2904 continue; 2905 2906 if (h != NULL) 2907 name = h->root.root.string; 2908 else 2909 { 2910 name = (bfd_elf_string_from_elf_section 2911 (input_bfd, symtab_hdr->sh_link, sym->st_name)); 2912 if (name == NULL || *name == '\0') 2913 name = bfd_section_name (input_bfd, sec); 2914 } 2915 2916 switch (r_type) 2917 { 2918 case R_TILEPRO_TLS_GD_CALL: 2919 case R_TILEPRO_IMM8_X0_TLS_GD_ADD: 2920 case R_TILEPRO_IMM8_Y0_TLS_GD_ADD: 2921 case R_TILEPRO_IMM8_X1_TLS_GD_ADD: 2922 case R_TILEPRO_IMM8_Y1_TLS_GD_ADD: 2923 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 2924 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 2925 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 2926 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 2927 tls_type = GOT_UNKNOWN; 2928 if (h == NULL && local_got_offsets) 2929 tls_type = 2930 _bfd_tilepro_elf_local_got_tls_type (input_bfd) [r_symndx]; 2931 else if (h != NULL) 2932 tls_type = tilepro_elf_hash_entry(h)->tls_type; 2933 2934 is_tls_iele = (! info->shared || tls_type == GOT_TLS_IE); 2935 is_tls_le = is_tls_iele && (!info->shared 2936 && (h == NULL || h->dynindx == -1)); 2937 2938 if (r_type == R_TILEPRO_TLS_GD_CALL) 2939 { 2940 if (is_tls_le) 2941 { 2942 /* GD -> LE */ 2943 tilepro_replace_insn (contents + rel->r_offset, 2944 insn_mask_X1, insn_tls_le_move_X1); 2945 continue; 2946 } 2947 else if (is_tls_iele) 2948 { 2949 /* GD -> IE */ 2950 tilepro_replace_insn (contents + rel->r_offset, 2951 insn_mask_X1, insn_tls_ie_lw_X1); 2952 continue; 2953 } 2954 2955 /* GD -> GD */ 2956 h = (struct elf_link_hash_entry *) 2957 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE, 2958 FALSE, TRUE); 2959 BFD_ASSERT (h != NULL); 2960 r_type = R_TILEPRO_JOFFLONG_X1_PLT; 2961 howto = tilepro_elf_howto_table + r_type; 2962 } 2963 else if (r_type == R_TILEPRO_IMM16_X0_TLS_GD_HA 2964 || r_type == R_TILEPRO_IMM16_X0_TLS_IE_HA) 2965 { 2966 if (is_tls_le) 2967 tilepro_replace_insn (contents + rel->r_offset, srca_mask_X0, 2968 insn_tls_le_move_zero_X0X1); 2969 } 2970 else if (r_type == R_TILEPRO_IMM16_X1_TLS_GD_HA 2971 || r_type == R_TILEPRO_IMM16_X1_TLS_IE_HA) 2972 { 2973 if (is_tls_le) 2974 tilepro_replace_insn (contents + rel->r_offset, srca_mask_X1, 2975 insn_tls_le_move_zero_X0X1); 2976 } 2977 else 2978 { 2979 const bfd_byte *mask = NULL; 2980 const bfd_byte *add_insn = NULL; 2981 2982 switch (r_type) 2983 { 2984 case R_TILEPRO_IMM8_X0_TLS_GD_ADD: 2985 add_insn = is_tls_iele ? insn_tls_ie_add_X0X1 2986 : insn_tls_gd_add_X0X1; 2987 mask = insn_mask_X0_no_dest_no_srca; 2988 break; 2989 case R_TILEPRO_IMM8_X1_TLS_GD_ADD: 2990 add_insn = is_tls_iele ? insn_tls_ie_add_X0X1 2991 : insn_tls_gd_add_X0X1; 2992 mask = insn_mask_X1_no_dest_no_srca; 2993 break; 2994 case R_TILEPRO_IMM8_Y0_TLS_GD_ADD: 2995 add_insn = is_tls_iele ? insn_tls_ie_add_Y0Y1 2996 : insn_tls_gd_add_Y0Y1; 2997 mask = insn_mask_Y0_no_dest_no_srca; 2998 break; 2999 case R_TILEPRO_IMM8_Y1_TLS_GD_ADD: 3000 add_insn = is_tls_iele ? insn_tls_ie_add_Y0Y1 3001 : insn_tls_gd_add_Y0Y1; 3002 mask = insn_mask_Y1_no_dest_no_srca; 3003 break; 3004 } 3005 3006 tilepro_replace_insn (contents + rel->r_offset, mask, add_insn); 3007 3008 continue; 3009 } 3010 break; 3011 case R_TILEPRO_TLS_IE_LOAD: 3012 if (!info->shared && (h == NULL || h->dynindx == -1)) 3013 /* IE -> LE */ 3014 tilepro_replace_insn (contents + rel->r_offset, 3015 insn_mask_X1_no_dest_no_srca, 3016 insn_tls_le_move_X1); 3017 else 3018 /* IE -> IE */ 3019 tilepro_replace_insn (contents + rel->r_offset, 3020 insn_mask_X1_no_dest_no_srca, 3021 insn_tls_ie_lw_X1); 3022 continue; 3023 break; 3024 default: 3025 break; 3026 } 3027 3028 switch (r_type) 3029 { 3030 case R_TILEPRO_IMM16_X0_GOT: 3031 case R_TILEPRO_IMM16_X1_GOT: 3032 case R_TILEPRO_IMM16_X0_GOT_LO: 3033 case R_TILEPRO_IMM16_X1_GOT_LO: 3034 case R_TILEPRO_IMM16_X0_GOT_HI: 3035 case R_TILEPRO_IMM16_X1_GOT_HI: 3036 case R_TILEPRO_IMM16_X0_GOT_HA: 3037 case R_TILEPRO_IMM16_X1_GOT_HA: 3038 /* Relocation is to the entry for this symbol in the global 3039 offset table. */ 3040 if (htab->elf.sgot == NULL) 3041 abort (); 3042 3043 if (h != NULL) 3044 { 3045 bfd_boolean dyn; 3046 3047 off = h->got.offset; 3048 BFD_ASSERT (off != (bfd_vma) -1); 3049 dyn = elf_hash_table (info)->dynamic_sections_created; 3050 3051 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) 3052 || (info->shared 3053 && SYMBOL_REFERENCES_LOCAL (info, h))) 3054 { 3055 /* This is actually a static link, or it is a 3056 -Bsymbolic link and the symbol is defined 3057 locally, or the symbol was forced to be local 3058 because of a version file. We must initialize 3059 this entry in the global offset table. Since the 3060 offset must always be a multiple 3061 of 4 for 32-bit, we use the least significant bit 3062 to record whether we have initialized it already. 3063 3064 When doing a dynamic link, we create a .rela.got 3065 relocation entry to initialize the value. This 3066 is done in the finish_dynamic_symbol routine. */ 3067 if ((off & 1) != 0) 3068 off &= ~1; 3069 else 3070 { 3071 bfd_put_32 (output_bfd, relocation, 3072 htab->elf.sgot->contents + off); 3073 h->got.offset |= 1; 3074 } 3075 } 3076 else 3077 unresolved_reloc = FALSE; 3078 } 3079 else 3080 { 3081 BFD_ASSERT (local_got_offsets != NULL 3082 && local_got_offsets[r_symndx] != (bfd_vma) -1); 3083 3084 off = local_got_offsets[r_symndx]; 3085 3086 /* The offset must always be a multiple of 4 on 32-bit. 3087 We use the least significant bit to record 3088 whether we have already processed this entry. */ 3089 if ((off & 1) != 0) 3090 off &= ~1; 3091 else 3092 { 3093 if (info->shared) 3094 { 3095 asection *s; 3096 Elf_Internal_Rela outrel; 3097 3098 /* We need to generate a R_TILEPRO_RELATIVE reloc 3099 for the dynamic linker. */ 3100 s = htab->elf.srelgot; 3101 BFD_ASSERT (s != NULL); 3102 3103 outrel.r_offset = (htab->elf.sgot->output_section->vma 3104 + htab->elf.sgot->output_offset 3105 + off); 3106 outrel.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE); 3107 outrel.r_addend = relocation; 3108 relocation = 0; 3109 tilepro_elf_append_rela_32 (output_bfd, s, &outrel); 3110 } 3111 3112 bfd_put_32 (output_bfd, relocation, 3113 htab->elf.sgot->contents + off); 3114 local_got_offsets[r_symndx] |= 1; 3115 } 3116 } 3117 relocation = off - got_base; 3118 break; 3119 3120 case R_TILEPRO_JOFFLONG_X1_PLT: 3121 /* Relocation is to the entry for this symbol in the 3122 procedure linkage table. */ 3123 BFD_ASSERT (h != NULL); 3124 3125 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL) 3126 { 3127 /* We didn't make a PLT entry for this symbol. This 3128 happens when statically linking PIC code, or when 3129 using -Bsymbolic. */ 3130 break; 3131 } 3132 3133 relocation = (htab->elf.splt->output_section->vma 3134 + htab->elf.splt->output_offset 3135 + h->plt.offset); 3136 unresolved_reloc = FALSE; 3137 break; 3138 3139 case R_TILEPRO_32_PCREL: 3140 case R_TILEPRO_16_PCREL: 3141 case R_TILEPRO_8_PCREL: 3142 case R_TILEPRO_IMM16_X0_PCREL: 3143 case R_TILEPRO_IMM16_X1_PCREL: 3144 case R_TILEPRO_IMM16_X0_LO_PCREL: 3145 case R_TILEPRO_IMM16_X1_LO_PCREL: 3146 case R_TILEPRO_IMM16_X0_HI_PCREL: 3147 case R_TILEPRO_IMM16_X1_HI_PCREL: 3148 case R_TILEPRO_IMM16_X0_HA_PCREL: 3149 case R_TILEPRO_IMM16_X1_HA_PCREL: 3150 if (h != NULL 3151 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 3152 break; 3153 /* Fall through. */ 3154 case R_TILEPRO_32: 3155 case R_TILEPRO_16: 3156 case R_TILEPRO_8: 3157 case R_TILEPRO_LO16: 3158 case R_TILEPRO_HI16: 3159 case R_TILEPRO_HA16: 3160 case R_TILEPRO_COPY: 3161 case R_TILEPRO_GLOB_DAT: 3162 case R_TILEPRO_JMP_SLOT: 3163 case R_TILEPRO_RELATIVE: 3164 case R_TILEPRO_BROFF_X1: 3165 case R_TILEPRO_JOFFLONG_X1: 3166 case R_TILEPRO_IMM8_X0: 3167 case R_TILEPRO_IMM8_Y0: 3168 case R_TILEPRO_IMM8_X1: 3169 case R_TILEPRO_IMM8_Y1: 3170 case R_TILEPRO_DEST_IMM8_X1: 3171 case R_TILEPRO_MT_IMM15_X1: 3172 case R_TILEPRO_MF_IMM15_X1: 3173 case R_TILEPRO_IMM16_X0: 3174 case R_TILEPRO_IMM16_X1: 3175 case R_TILEPRO_IMM16_X0_LO: 3176 case R_TILEPRO_IMM16_X1_LO: 3177 case R_TILEPRO_IMM16_X0_HI: 3178 case R_TILEPRO_IMM16_X1_HI: 3179 case R_TILEPRO_IMM16_X0_HA: 3180 case R_TILEPRO_IMM16_X1_HA: 3181 case R_TILEPRO_MMSTART_X0: 3182 case R_TILEPRO_MMEND_X0: 3183 case R_TILEPRO_MMSTART_X1: 3184 case R_TILEPRO_MMEND_X1: 3185 case R_TILEPRO_SHAMT_X0: 3186 case R_TILEPRO_SHAMT_X1: 3187 case R_TILEPRO_SHAMT_Y0: 3188 case R_TILEPRO_SHAMT_Y1: 3189 if ((input_section->flags & SEC_ALLOC) == 0) 3190 break; 3191 3192 if ((info->shared 3193 && (h == NULL 3194 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 3195 || h->root.type != bfd_link_hash_undefweak) 3196 && (! howto->pc_relative 3197 || !SYMBOL_CALLS_LOCAL (info, h))) 3198 || (!info->shared 3199 && h != NULL 3200 && h->dynindx != -1 3201 && !h->non_got_ref 3202 && ((h->def_dynamic 3203 && !h->def_regular) 3204 || h->root.type == bfd_link_hash_undefweak 3205 || h->root.type == bfd_link_hash_undefined))) 3206 { 3207 Elf_Internal_Rela outrel; 3208 bfd_boolean skip, relocate = FALSE; 3209 3210 /* When generating a shared object, these relocations 3211 are copied into the output file to be resolved at run 3212 time. */ 3213 3214 BFD_ASSERT (sreloc != NULL); 3215 3216 skip = FALSE; 3217 3218 outrel.r_offset = 3219 _bfd_elf_section_offset (output_bfd, info, input_section, 3220 rel->r_offset); 3221 if (outrel.r_offset == (bfd_vma) -1) 3222 skip = TRUE; 3223 else if (outrel.r_offset == (bfd_vma) -2) 3224 skip = TRUE, relocate = TRUE; 3225 outrel.r_offset += (input_section->output_section->vma 3226 + input_section->output_offset); 3227 3228 switch (r_type) 3229 { 3230 case R_TILEPRO_32_PCREL: 3231 case R_TILEPRO_16_PCREL: 3232 case R_TILEPRO_8_PCREL: 3233 /* If the symbol is not dynamic, we should not keep 3234 a dynamic relocation. But an .rela.* slot has been 3235 allocated for it, output R_TILEPRO_NONE. 3236 FIXME: Add code tracking needed dynamic relocs as 3237 e.g. i386 has. */ 3238 if (h->dynindx == -1) 3239 skip = TRUE, relocate = TRUE; 3240 break; 3241 } 3242 3243 if (skip) 3244 memset (&outrel, 0, sizeof outrel); 3245 /* h->dynindx may be -1 if the symbol was marked to 3246 become local. */ 3247 else if (h != NULL && 3248 h->dynindx != -1 3249 && (! is_plt 3250 || !info->shared 3251 || !SYMBOLIC_BIND (info, h) 3252 || !h->def_regular)) 3253 { 3254 BFD_ASSERT (h->dynindx != -1); 3255 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 3256 outrel.r_addend = rel->r_addend; 3257 } 3258 else 3259 { 3260 if (r_type == R_TILEPRO_32) 3261 { 3262 outrel.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE); 3263 outrel.r_addend = relocation + rel->r_addend; 3264 } 3265 else 3266 { 3267 long indx; 3268 3269 outrel.r_addend = relocation + rel->r_addend; 3270 3271 if (is_plt) 3272 sec = htab->elf.splt; 3273 3274 if (bfd_is_abs_section (sec)) 3275 indx = 0; 3276 else if (sec == NULL || sec->owner == NULL) 3277 { 3278 bfd_set_error (bfd_error_bad_value); 3279 return FALSE; 3280 } 3281 else 3282 { 3283 asection *osec; 3284 3285 /* We are turning this relocation into one 3286 against a section symbol. It would be 3287 proper to subtract the symbol's value, 3288 osec->vma, from the emitted reloc addend, 3289 but ld.so expects buggy relocs. */ 3290 osec = sec->output_section; 3291 indx = elf_section_data (osec)->dynindx; 3292 3293 if (indx == 0) 3294 { 3295 osec = htab->elf.text_index_section; 3296 indx = elf_section_data (osec)->dynindx; 3297 } 3298 3299 /* FIXME: we really should be able to link non-pic 3300 shared libraries. */ 3301 if (indx == 0) 3302 { 3303 BFD_FAIL (); 3304 (*_bfd_error_handler) 3305 (_("%B: probably compiled without -fPIC?"), 3306 input_bfd); 3307 bfd_set_error (bfd_error_bad_value); 3308 return FALSE; 3309 } 3310 } 3311 3312 outrel.r_info = ELF32_R_INFO (indx, r_type); 3313 } 3314 } 3315 3316 tilepro_elf_append_rela_32 (output_bfd, sreloc, &outrel); 3317 3318 /* This reloc will be computed at runtime, so there's no 3319 need to do anything now. */ 3320 if (! relocate) 3321 continue; 3322 } 3323 break; 3324 3325 case R_TILEPRO_IMM16_X0_TLS_LE: 3326 case R_TILEPRO_IMM16_X1_TLS_LE: 3327 case R_TILEPRO_IMM16_X0_TLS_LE_LO: 3328 case R_TILEPRO_IMM16_X1_TLS_LE_LO: 3329 case R_TILEPRO_IMM16_X0_TLS_LE_HI: 3330 case R_TILEPRO_IMM16_X1_TLS_LE_HI: 3331 case R_TILEPRO_IMM16_X0_TLS_LE_HA: 3332 case R_TILEPRO_IMM16_X1_TLS_LE_HA: 3333 if (info->shared) 3334 { 3335 Elf_Internal_Rela outrel; 3336 bfd_boolean skip; 3337 3338 BFD_ASSERT (sreloc != NULL); 3339 skip = FALSE; 3340 outrel.r_offset = 3341 _bfd_elf_section_offset (output_bfd, info, input_section, 3342 rel->r_offset); 3343 if (outrel.r_offset == (bfd_vma) -1) 3344 skip = TRUE; 3345 else if (outrel.r_offset == (bfd_vma) -2) 3346 skip = TRUE; 3347 outrel.r_offset += (input_section->output_section->vma 3348 + input_section->output_offset); 3349 if (skip) 3350 memset (&outrel, 0, sizeof outrel); 3351 else 3352 { 3353 outrel.r_info = ELF32_R_INFO (0, r_type); 3354 outrel.r_addend = relocation - dtpoff_base (info) 3355 + rel->r_addend; 3356 } 3357 3358 tilepro_elf_append_rela_32 (output_bfd, sreloc, &outrel); 3359 continue; 3360 } 3361 relocation = tpoff (info, relocation); 3362 break; 3363 3364 case R_TILEPRO_IMM16_X0_TLS_GD: 3365 case R_TILEPRO_IMM16_X1_TLS_GD: 3366 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 3367 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 3368 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 3369 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 3370 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 3371 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 3372 case R_TILEPRO_IMM16_X0_TLS_IE: 3373 case R_TILEPRO_IMM16_X1_TLS_IE: 3374 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 3375 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 3376 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 3377 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 3378 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 3379 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 3380 r_type = tilepro_elf_tls_transition (info, r_type, h == NULL); 3381 tls_type = GOT_UNKNOWN; 3382 if (h == NULL && local_got_offsets) 3383 tls_type 3384 = _bfd_tilepro_elf_local_got_tls_type (input_bfd) [r_symndx]; 3385 else if (h != NULL) 3386 { 3387 tls_type = tilepro_elf_hash_entry(h)->tls_type; 3388 if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE) 3389 r_type = tilepro_tls_translate_to_le (r_type); 3390 } 3391 if (tls_type == GOT_TLS_IE) 3392 r_type = tilepro_tls_translate_to_ie (r_type); 3393 3394 if (r_type == R_TILEPRO_IMM16_X0_TLS_LE 3395 || r_type == R_TILEPRO_IMM16_X1_TLS_LE 3396 || r_type == R_TILEPRO_IMM16_X0_TLS_LE_LO 3397 || r_type == R_TILEPRO_IMM16_X1_TLS_LE_LO 3398 || r_type == R_TILEPRO_IMM16_X0_TLS_LE_HI 3399 || r_type == R_TILEPRO_IMM16_X1_TLS_LE_HI 3400 || r_type == R_TILEPRO_IMM16_X0_TLS_LE_HA 3401 || r_type == R_TILEPRO_IMM16_X1_TLS_LE_HA) 3402 { 3403 relocation = tpoff (info, relocation); 3404 break; 3405 } 3406 3407 if (h != NULL) 3408 { 3409 off = h->got.offset; 3410 h->got.offset |= 1; 3411 } 3412 else 3413 { 3414 BFD_ASSERT (local_got_offsets != NULL); 3415 off = local_got_offsets[r_symndx]; 3416 local_got_offsets[r_symndx] |= 1; 3417 } 3418 3419 if (htab->elf.sgot == NULL) 3420 abort (); 3421 3422 if ((off & 1) != 0) 3423 off &= ~1; 3424 else 3425 { 3426 Elf_Internal_Rela outrel; 3427 int indx = 0; 3428 bfd_boolean need_relocs = FALSE; 3429 3430 if (htab->elf.srelgot == NULL) 3431 abort (); 3432 3433 if (h != NULL) 3434 { 3435 bfd_boolean dyn; 3436 dyn = htab->elf.dynamic_sections_created; 3437 3438 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) 3439 && (!info->shared 3440 || !SYMBOL_REFERENCES_LOCAL (info, h))) 3441 { 3442 indx = h->dynindx; 3443 } 3444 } 3445 3446 /* The GOT entries have not been initialized yet. Do it 3447 now, and emit any relocations. */ 3448 if ((info->shared || indx != 0) 3449 && (h == NULL 3450 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 3451 || h->root.type != bfd_link_hash_undefweak)) 3452 need_relocs = TRUE; 3453 3454 switch (r_type) 3455 { 3456 case R_TILEPRO_IMM16_X0_TLS_IE: 3457 case R_TILEPRO_IMM16_X1_TLS_IE: 3458 case R_TILEPRO_IMM16_X0_TLS_IE_LO: 3459 case R_TILEPRO_IMM16_X1_TLS_IE_LO: 3460 case R_TILEPRO_IMM16_X0_TLS_IE_HI: 3461 case R_TILEPRO_IMM16_X1_TLS_IE_HI: 3462 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 3463 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 3464 if (need_relocs) { 3465 bfd_put_32 (output_bfd, 0, htab->elf.sgot->contents + off); 3466 outrel.r_offset = (htab->elf.sgot->output_section->vma 3467 + htab->elf.sgot->output_offset + off); 3468 outrel.r_addend = 0; 3469 if (indx == 0) 3470 outrel.r_addend = relocation - dtpoff_base (info); 3471 outrel.r_info = ELF32_R_INFO (indx, R_TILEPRO_TLS_TPOFF32); 3472 tilepro_elf_append_rela_32 (output_bfd, htab->elf.srelgot, 3473 &outrel); 3474 } else { 3475 bfd_put_32 (output_bfd, tpoff (info, relocation), 3476 htab->elf.sgot->contents + off); 3477 } 3478 break; 3479 3480 case R_TILEPRO_IMM16_X0_TLS_GD: 3481 case R_TILEPRO_IMM16_X1_TLS_GD: 3482 case R_TILEPRO_IMM16_X0_TLS_GD_LO: 3483 case R_TILEPRO_IMM16_X1_TLS_GD_LO: 3484 case R_TILEPRO_IMM16_X0_TLS_GD_HI: 3485 case R_TILEPRO_IMM16_X1_TLS_GD_HI: 3486 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 3487 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 3488 if (need_relocs) { 3489 outrel.r_offset = (htab->elf.sgot->output_section->vma 3490 + htab->elf.sgot->output_offset + off); 3491 outrel.r_addend = 0; 3492 outrel.r_info = ELF32_R_INFO (indx, R_TILEPRO_TLS_DTPMOD32); 3493 bfd_put_32 (output_bfd, 0, htab->elf.sgot->contents + off); 3494 tilepro_elf_append_rela_32 (output_bfd, htab->elf.srelgot, 3495 &outrel); 3496 if (indx == 0) 3497 { 3498 BFD_ASSERT (! unresolved_reloc); 3499 bfd_put_32 (output_bfd, 3500 relocation - dtpoff_base (info), 3501 (htab->elf.sgot->contents + off + 3502 TILEPRO_BYTES_PER_WORD)); 3503 } 3504 else 3505 { 3506 bfd_put_32 (output_bfd, 0, 3507 (htab->elf.sgot->contents + off + 3508 TILEPRO_BYTES_PER_WORD)); 3509 outrel.r_info = ELF32_R_INFO (indx, 3510 R_TILEPRO_TLS_DTPOFF32); 3511 outrel.r_offset += TILEPRO_BYTES_PER_WORD; 3512 tilepro_elf_append_rela_32 (output_bfd, 3513 htab->elf.srelgot, &outrel); 3514 } 3515 } 3516 3517 else { 3518 /* If we are not emitting relocations for a 3519 general dynamic reference, then we must be in a 3520 static link or an executable link with the 3521 symbol binding locally. Mark it as belonging 3522 to module 1, the executable. */ 3523 bfd_put_32 (output_bfd, 1, 3524 htab->elf.sgot->contents + off ); 3525 bfd_put_32 (output_bfd, relocation - dtpoff_base (info), 3526 htab->elf.sgot->contents + off + 3527 TILEPRO_BYTES_PER_WORD); 3528 } 3529 break; 3530 } 3531 } 3532 3533 if (off >= (bfd_vma) -2) 3534 abort (); 3535 3536 relocation = off - got_base; 3537 unresolved_reloc = FALSE; 3538 howto = tilepro_elf_howto_table + r_type; 3539 break; 3540 3541 default: 3542 break; 3543 } 3544 3545 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections 3546 because such sections are not SEC_ALLOC and thus ld.so will 3547 not process them. */ 3548 if (unresolved_reloc 3549 && !((input_section->flags & SEC_DEBUGGING) != 0 3550 && h->def_dynamic) 3551 && _bfd_elf_section_offset (output_bfd, info, input_section, 3552 rel->r_offset) != (bfd_vma) -1) 3553 (*_bfd_error_handler) 3554 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), 3555 input_bfd, 3556 input_section, 3557 (long) rel->r_offset, 3558 howto->name, 3559 h->root.root.string); 3560 3561 r = bfd_reloc_continue; 3562 3563 /* For the _HA types, we add 0x8000 so that if bit 15 is set, 3564 * we will increment bit 16. The howto->rightshift takes care 3565 * of the rest for us. */ 3566 switch (r_type) 3567 { 3568 case R_TILEPRO_HA16: 3569 case R_TILEPRO_IMM16_X0_HA: 3570 case R_TILEPRO_IMM16_X1_HA: 3571 case R_TILEPRO_IMM16_X0_HA_PCREL: 3572 case R_TILEPRO_IMM16_X1_HA_PCREL: 3573 case R_TILEPRO_IMM16_X0_GOT_HA: 3574 case R_TILEPRO_IMM16_X1_GOT_HA: 3575 case R_TILEPRO_IMM16_X0_TLS_GD_HA: 3576 case R_TILEPRO_IMM16_X1_TLS_GD_HA: 3577 case R_TILEPRO_IMM16_X0_TLS_IE_HA: 3578 case R_TILEPRO_IMM16_X1_TLS_IE_HA: 3579 relocation += 0x8000; 3580 break; 3581 } 3582 3583 /* Get the operand creation function, if any. */ 3584 create_func = reloc_to_create_func[r_type]; 3585 if (create_func == NULL) 3586 { 3587 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3588 contents, rel->r_offset, 3589 relocation, rel->r_addend); 3590 } 3591 else 3592 { 3593 if (howto->pc_relative) 3594 { 3595 relocation -= 3596 input_section->output_section->vma + input_section->output_offset; 3597 if (howto->pcrel_offset) 3598 relocation -= rel->r_offset; 3599 } 3600 3601 bfd_byte *data; 3602 3603 /* Add the relocation addend if any to the final target value */ 3604 relocation += rel->r_addend; 3605 3606 /* Do basic range checking */ 3607 r = bfd_check_overflow (howto->complain_on_overflow, 3608 howto->bitsize, 3609 howto->rightshift, 3610 32, 3611 relocation); 3612 3613 /* 3614 * Write the relocated value out into the raw section data. 3615 * Don't put a relocation out in the .rela section. 3616 */ 3617 tilepro_bundle_bits mask = create_func(-1); 3618 tilepro_bundle_bits value = create_func(relocation >> howto->rightshift); 3619 3620 /* Only touch bytes while the mask is not 0, so we 3621 don't write to out of bounds memory if this is actually 3622 a 16-bit switch instruction. */ 3623 for (data = contents + rel->r_offset; mask != 0; data++) 3624 { 3625 bfd_byte byte_mask = (bfd_byte)mask; 3626 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask); 3627 mask >>= 8; 3628 value >>= 8; 3629 } 3630 } 3631 3632 if (r != bfd_reloc_ok) 3633 { 3634 const char *msg = NULL; 3635 3636 switch (r) 3637 { 3638 case bfd_reloc_overflow: 3639 r = info->callbacks->reloc_overflow 3640 (info, (h ? &h->root : NULL), name, howto->name, 3641 (bfd_vma) 0, input_bfd, input_section, rel->r_offset); 3642 break; 3643 3644 case bfd_reloc_undefined: 3645 r = info->callbacks->undefined_symbol 3646 (info, name, input_bfd, input_section, rel->r_offset, 3647 TRUE); 3648 break; 3649 3650 case bfd_reloc_outofrange: 3651 msg = _("internal error: out of range error"); 3652 break; 3653 3654 case bfd_reloc_notsupported: 3655 msg = _("internal error: unsupported relocation error"); 3656 break; 3657 3658 case bfd_reloc_dangerous: 3659 msg = _("internal error: dangerous relocation"); 3660 break; 3661 3662 default: 3663 msg = _("internal error: unknown error"); 3664 break; 3665 } 3666 3667 if (msg) 3668 r = info->callbacks->warning 3669 (info, msg, name, input_bfd, input_section, rel->r_offset); 3670 3671 if (! r) 3672 return FALSE; 3673 } 3674 } 3675 3676 return TRUE; 3677 } 3678 3679 /* Finish up dynamic symbol handling. We set the contents of various 3680 dynamic sections here. */ 3681 3682 static bfd_boolean 3683 tilepro_elf_finish_dynamic_symbol (bfd *output_bfd, 3684 struct bfd_link_info *info, 3685 struct elf_link_hash_entry *h, 3686 Elf_Internal_Sym *sym) 3687 { 3688 struct tilepro_elf_link_hash_table *htab; 3689 3690 htab = tilepro_elf_hash_table (info); 3691 BFD_ASSERT (htab != NULL); 3692 3693 if (h->plt.offset != (bfd_vma) -1) 3694 { 3695 asection *splt; 3696 asection *srela; 3697 asection *sgotplt; 3698 Elf_Internal_Rela rela; 3699 bfd_byte *loc; 3700 bfd_vma r_offset; 3701 3702 int rela_index; 3703 3704 /* This symbol has an entry in the PLT. Set it up. */ 3705 3706 BFD_ASSERT (h->dynindx != -1); 3707 3708 splt = htab->elf.splt; 3709 srela = htab->elf.srelplt; 3710 sgotplt = htab->elf.sgotplt; 3711 3712 if (splt == NULL || srela == NULL) 3713 abort (); 3714 3715 /* Fill in the entry in the procedure linkage table. */ 3716 rela_index = tilepro_plt_entry_build (splt, sgotplt, h->plt.offset, 3717 &r_offset); 3718 3719 /* Fill in the entry in the global offset table, which initially points 3720 to the beginning of the plt. */ 3721 bfd_put_32 (output_bfd, splt->output_section->vma + splt->output_offset, 3722 sgotplt->contents + r_offset); 3723 3724 /* Fill in the entry in the .rela.plt section. */ 3725 rela.r_offset = (sgotplt->output_section->vma 3726 + sgotplt->output_offset 3727 + r_offset); 3728 rela.r_addend = 0; 3729 rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_JMP_SLOT); 3730 3731 loc = srela->contents + rela_index * sizeof (Elf32_External_Rela); 3732 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3733 3734 if (!h->def_regular) 3735 { 3736 /* Mark the symbol as undefined, rather than as defined in 3737 the .plt section. Leave the value alone. */ 3738 sym->st_shndx = SHN_UNDEF; 3739 /* If the symbol is weak, we do need to clear the value. 3740 Otherwise, the PLT entry would provide a definition for 3741 the symbol even if the symbol wasn't defined anywhere, 3742 and so the symbol would never be NULL. */ 3743 if (!h->ref_regular_nonweak) 3744 sym->st_value = 0; 3745 } 3746 } 3747 3748 if (h->got.offset != (bfd_vma) -1 3749 && tilepro_elf_hash_entry(h)->tls_type != GOT_TLS_GD 3750 && tilepro_elf_hash_entry(h)->tls_type != GOT_TLS_IE) 3751 { 3752 asection *sgot; 3753 asection *srela; 3754 Elf_Internal_Rela rela; 3755 3756 /* This symbol has an entry in the GOT. Set it up. */ 3757 3758 sgot = htab->elf.sgot; 3759 srela = htab->elf.srelgot; 3760 BFD_ASSERT (sgot != NULL && srela != NULL); 3761 3762 rela.r_offset = (sgot->output_section->vma 3763 + sgot->output_offset 3764 + (h->got.offset &~ (bfd_vma) 1)); 3765 3766 /* If this is a -Bsymbolic link, and the symbol is defined 3767 locally, we just want to emit a RELATIVE reloc. Likewise if 3768 the symbol was forced to be local because of a version file. 3769 The entry in the global offset table will already have been 3770 initialized in the relocate_section function. */ 3771 if (info->shared 3772 && (info->symbolic || h->dynindx == -1) 3773 && h->def_regular) 3774 { 3775 asection *sec = h->root.u.def.section; 3776 rela.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE); 3777 rela.r_addend = (h->root.u.def.value 3778 + sec->output_section->vma 3779 + sec->output_offset); 3780 } 3781 else 3782 { 3783 rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_GLOB_DAT); 3784 rela.r_addend = 0; 3785 } 3786 3787 bfd_put_32 (output_bfd, 0, 3788 sgot->contents + (h->got.offset & ~(bfd_vma) 1)); 3789 tilepro_elf_append_rela_32 (output_bfd, srela, &rela); 3790 } 3791 3792 if (h->needs_copy) 3793 { 3794 asection *s; 3795 Elf_Internal_Rela rela; 3796 3797 /* This symbols needs a copy reloc. Set it up. */ 3798 BFD_ASSERT (h->dynindx != -1); 3799 3800 s = htab->srelbss; 3801 BFD_ASSERT (s != NULL); 3802 3803 rela.r_offset = (h->root.u.def.value 3804 + h->root.u.def.section->output_section->vma 3805 + h->root.u.def.section->output_offset); 3806 rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_COPY); 3807 rela.r_addend = 0; 3808 tilepro_elf_append_rela_32 (output_bfd, s, &rela); 3809 } 3810 3811 /* Mark some specially defined symbols as absolute. */ 3812 if (strcmp (h->root.root.string, "_DYNAMIC") == 0 3813 || (h == htab->elf.hgot || h == htab->elf.hplt)) 3814 sym->st_shndx = SHN_ABS; 3815 3816 return TRUE; 3817 } 3818 3819 /* Finish up the dynamic sections. */ 3820 3821 static bfd_boolean 3822 tilepro_finish_dyn (bfd *output_bfd, struct bfd_link_info *info, 3823 bfd *dynobj, asection *sdyn, 3824 asection *splt ATTRIBUTE_UNUSED) 3825 { 3826 Elf32_External_Dyn *dyncon, *dynconend; 3827 struct tilepro_elf_link_hash_table *htab; 3828 3829 htab = tilepro_elf_hash_table (info); 3830 BFD_ASSERT (htab != NULL); 3831 dyncon = (Elf32_External_Dyn *) sdyn->contents; 3832 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); 3833 for (; dyncon < dynconend; dyncon++) 3834 { 3835 Elf_Internal_Dyn dyn; 3836 asection *s; 3837 3838 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 3839 3840 switch (dyn.d_tag) 3841 { 3842 case DT_PLTGOT: 3843 s = htab->elf.sgotplt; 3844 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 3845 break; 3846 case DT_JMPREL: 3847 s = htab->elf.srelplt; 3848 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 3849 break; 3850 case DT_PLTRELSZ: 3851 s = htab->elf.srelplt; 3852 dyn.d_un.d_val = s->size; 3853 break; 3854 default: 3855 continue; 3856 } 3857 3858 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3859 } 3860 return TRUE; 3861 } 3862 3863 static bfd_boolean 3864 tilepro_elf_finish_dynamic_sections (bfd *output_bfd, 3865 struct bfd_link_info *info) 3866 { 3867 bfd *dynobj; 3868 asection *sdyn; 3869 struct tilepro_elf_link_hash_table *htab; 3870 3871 htab = tilepro_elf_hash_table (info); 3872 BFD_ASSERT (htab != NULL); 3873 dynobj = htab->elf.dynobj; 3874 3875 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 3876 3877 if (elf_hash_table (info)->dynamic_sections_created) 3878 { 3879 asection *splt; 3880 bfd_boolean ret; 3881 3882 splt = htab->elf.splt; 3883 BFD_ASSERT (splt != NULL && sdyn != NULL); 3884 3885 ret = tilepro_finish_dyn (output_bfd, info, dynobj, sdyn, splt); 3886 3887 if (ret != TRUE) 3888 return ret; 3889 3890 /* Fill in the first entry in the procedure linkage table. */ 3891 if (splt->size > 0) 3892 memcpy (splt->contents, tilepro_plt0_entry, PLT_HEADER_SIZE); 3893 3894 elf_section_data (splt->output_section)->this_hdr.sh_entsize 3895 = PLT_ENTRY_SIZE; 3896 } 3897 3898 if (htab->elf.sgotplt) 3899 { 3900 if (bfd_is_abs_section (htab->elf.sgotplt->output_section)) 3901 { 3902 (*_bfd_error_handler) 3903 (_("discarded output section: `%A'"), htab->elf.sgotplt); 3904 return FALSE; 3905 } 3906 3907 if (htab->elf.sgotplt->size > 0) 3908 { 3909 /* Write the first two entries in .got.plt, needed for the dynamic 3910 linker. */ 3911 bfd_put_32 (output_bfd, (bfd_vma) -1, 3912 htab->elf.sgotplt->contents); 3913 bfd_put_32 (output_bfd, (bfd_vma) 0, 3914 htab->elf.sgotplt->contents + GOT_ENTRY_SIZE); 3915 } 3916 3917 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize 3918 = GOT_ENTRY_SIZE; 3919 } 3920 3921 if (htab->elf.sgot) 3922 { 3923 if (htab->elf.sgot->size > 0) 3924 { 3925 /* Set the first entry in the global offset table to the address of 3926 the dynamic section. */ 3927 bfd_vma val = (sdyn ? 3928 sdyn->output_section->vma + sdyn->output_offset : 3929 0); 3930 bfd_put_32 (output_bfd, val, htab->elf.sgot->contents); 3931 } 3932 3933 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize 3934 = GOT_ENTRY_SIZE; 3935 } 3936 3937 return TRUE; 3938 } 3939 3940 3941 3942 /* Return address for Ith PLT stub in section PLT, for relocation REL 3943 or (bfd_vma) -1 if it should not be included. */ 3944 3945 static bfd_vma 3946 tilepro_elf_plt_sym_val (bfd_vma i, const asection *plt, 3947 const arelent *rel ATTRIBUTE_UNUSED) 3948 { 3949 return plt->vma + PLT_HEADER_SIZE + i * PLT_ENTRY_SIZE; 3950 } 3951 3952 static enum elf_reloc_type_class 3953 tilepro_reloc_type_class (const Elf_Internal_Rela *rela) 3954 { 3955 switch ((int) ELF32_R_TYPE (rela->r_info)) 3956 { 3957 case R_TILEPRO_RELATIVE: 3958 return reloc_class_relative; 3959 case R_TILEPRO_JMP_SLOT: 3960 return reloc_class_plt; 3961 case R_TILEPRO_COPY: 3962 return reloc_class_copy; 3963 default: 3964 return reloc_class_normal; 3965 } 3966 } 3967 3968 static int 3969 tilepro_additional_program_headers (bfd *abfd, 3970 struct bfd_link_info *info ATTRIBUTE_UNUSED) 3971 { 3972 /* Each .intrpt section specified by the user adds another PT_LOAD 3973 header since the sections are discontiguous. */ 3974 static const char intrpt_sections[4][9] = 3975 { 3976 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3" 3977 }; 3978 int count = 0; 3979 int i; 3980 3981 for (i = 0; i < 4; i++) 3982 { 3983 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]); 3984 if (sec != NULL && (sec->flags & SEC_LOAD) != 0) 3985 ++count; 3986 } 3987 3988 /* Add four "padding" headers in to leave room in case a custom linker 3989 script does something fancy. Otherwise ld complains that it ran 3990 out of program headers and refuses to link. */ 3991 count += 4; 3992 3993 return count; 3994 } 3995 3996 #define ELF_ARCH bfd_arch_tilepro 3997 #define ELF_TARGET_ID TILEPRO_ELF_DATA 3998 #define ELF_MACHINE_CODE EM_TILEPRO 3999 #define ELF_MAXPAGESIZE 0x10000 4000 #define ELF_COMMONPAGESIZE 0x10000 4001 4002 #define TARGET_LITTLE_SYM bfd_elf32_tilepro_vec 4003 #define TARGET_LITTLE_NAME "elf32-tilepro" 4004 4005 #define elf_backend_reloc_type_class tilepro_reloc_type_class 4006 4007 #define bfd_elf32_bfd_reloc_name_lookup tilepro_reloc_name_lookup 4008 #define bfd_elf32_bfd_link_hash_table_create tilepro_elf_link_hash_table_create 4009 #define bfd_elf32_bfd_reloc_type_lookup tilepro_reloc_type_lookup 4010 4011 #define elf_backend_copy_indirect_symbol tilepro_elf_copy_indirect_symbol 4012 #define elf_backend_create_dynamic_sections tilepro_elf_create_dynamic_sections 4013 #define elf_backend_check_relocs tilepro_elf_check_relocs 4014 #define elf_backend_adjust_dynamic_symbol tilepro_elf_adjust_dynamic_symbol 4015 #define elf_backend_omit_section_dynsym tilepro_elf_omit_section_dynsym 4016 #define elf_backend_size_dynamic_sections tilepro_elf_size_dynamic_sections 4017 #define elf_backend_relocate_section tilepro_elf_relocate_section 4018 #define elf_backend_finish_dynamic_symbol tilepro_elf_finish_dynamic_symbol 4019 #define elf_backend_finish_dynamic_sections tilepro_elf_finish_dynamic_sections 4020 #define elf_backend_gc_mark_hook tilepro_elf_gc_mark_hook 4021 #define elf_backend_gc_sweep_hook tilepro_elf_gc_sweep_hook 4022 #define elf_backend_plt_sym_val tilepro_elf_plt_sym_val 4023 #define elf_info_to_howto_rel NULL 4024 #define elf_info_to_howto tilepro_info_to_howto_rela 4025 #define elf_backend_grok_prstatus tilepro_elf_grok_prstatus 4026 #define elf_backend_grok_psinfo tilepro_elf_grok_psinfo 4027 #define elf_backend_additional_program_headers tilepro_additional_program_headers 4028 4029 #define elf_backend_init_index_section _bfd_elf_init_1_index_section 4030 4031 #define elf_backend_can_gc_sections 1 4032 #define elf_backend_can_refcount 1 4033 #define elf_backend_want_got_plt 1 4034 #define elf_backend_plt_readonly 1 4035 /* Align PLT mod 64 byte L2 line size. */ 4036 #define elf_backend_plt_alignment 6 4037 #define elf_backend_want_plt_sym 1 4038 #define elf_backend_got_header_size GOT_ENTRY_SIZE 4039 #define elf_backend_rela_normal 1 4040 #define elf_backend_default_execstack 0 4041 4042 #include "elf32-target.h" 4043