1 /* FRV-specific support for 32-bit ELF. 2 Copyright (C) 2002-2019 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/frv.h" 26 #include "dwarf2.h" 27 #include "hashtab.h" 28 #include "libiberty.h" 29 30 /* Forward declarations. */ 31 32 33 static reloc_howto_type elf32_frv_howto_table [] = 34 { 35 /* This reloc does nothing. */ 36 HOWTO (R_FRV_NONE, /* type */ 37 0, /* rightshift */ 38 3, /* size (0 = byte, 1 = short, 2 = long) */ 39 0, /* bitsize */ 40 FALSE, /* pc_relative */ 41 0, /* bitpos */ 42 complain_overflow_dont, /* complain_on_overflow */ 43 bfd_elf_generic_reloc, /* special_function */ 44 "R_FRV_NONE", /* name */ 45 FALSE, /* partial_inplace */ 46 0, /* src_mask */ 47 0, /* dst_mask */ 48 FALSE), /* pcrel_offset */ 49 50 /* A 32 bit absolute relocation. */ 51 HOWTO (R_FRV_32, /* type */ 52 0, /* rightshift */ 53 2, /* size (0 = byte, 1 = short, 2 = long) */ 54 32, /* bitsize */ 55 FALSE, /* pc_relative */ 56 0, /* bitpos */ 57 complain_overflow_bitfield, /* complain_on_overflow */ 58 bfd_elf_generic_reloc, /* special_function */ 59 "R_FRV_32", /* name */ 60 FALSE, /* partial_inplace */ 61 0xffffffff, /* src_mask */ 62 0xffffffff, /* dst_mask */ 63 FALSE), /* pcrel_offset */ 64 65 /* A 16 bit pc-relative relocation. */ 66 HOWTO (R_FRV_LABEL16, /* type */ 67 2, /* rightshift */ 68 2, /* size (0 = byte, 1 = short, 2 = long) */ 69 16, /* bitsize */ 70 TRUE, /* pc_relative */ 71 0, /* bitpos */ 72 complain_overflow_signed, /* complain_on_overflow */ 73 bfd_elf_generic_reloc, /* special_function */ 74 "R_FRV_LABEL16", /* name */ 75 FALSE, /* partial_inplace */ 76 0xffff, /* src_mask */ 77 0xffff, /* dst_mask */ 78 TRUE), /* pcrel_offset */ 79 80 /* A 24-bit pc-relative relocation. */ 81 HOWTO (R_FRV_LABEL24, /* type */ 82 2, /* rightshift */ 83 2, /* size (0 = byte, 1 = short, 2 = long) */ 84 26, /* bitsize */ 85 TRUE, /* pc_relative */ 86 0, /* bitpos */ 87 complain_overflow_bitfield, /* complain_on_overflow */ 88 bfd_elf_generic_reloc, /* special_function */ 89 "R_FRV_LABEL24", /* name */ 90 FALSE, /* partial_inplace */ 91 0x7e03ffff, /* src_mask */ 92 0x7e03ffff, /* dst_mask */ 93 TRUE), /* pcrel_offset */ 94 95 HOWTO (R_FRV_LO16, /* type */ 96 0, /* rightshift */ 97 2, /* size (0 = byte, 1 = short, 2 = long) */ 98 16, /* bitsize */ 99 FALSE, /* pc_relative */ 100 0, /* bitpos */ 101 complain_overflow_dont, /* complain_on_overflow */ 102 bfd_elf_generic_reloc, /* special_function */ 103 "R_FRV_LO16", /* name */ 104 FALSE, /* partial_inplace */ 105 0xffff, /* src_mask */ 106 0xffff, /* dst_mask */ 107 FALSE), /* pcrel_offset */ 108 109 HOWTO (R_FRV_HI16, /* type */ 110 0, /* rightshift */ 111 2, /* size (0 = byte, 1 = short, 2 = long) */ 112 16, /* bitsize */ 113 FALSE, /* pc_relative */ 114 0, /* bitpos */ 115 complain_overflow_dont, /* complain_on_overflow */ 116 bfd_elf_generic_reloc, /* special_function */ 117 "R_FRV_HI16", /* name */ 118 FALSE, /* partial_inplace */ 119 0xffff, /* src_mask */ 120 0xffff, /* dst_mask */ 121 FALSE), /* pcrel_offset */ 122 123 HOWTO (R_FRV_GPREL12, /* type */ 124 0, /* rightshift */ 125 2, /* size (0 = byte, 1 = short, 2 = long) */ 126 12, /* bitsize */ 127 FALSE, /* pc_relative */ 128 0, /* bitpos */ 129 complain_overflow_dont, /* complain_on_overflow */ 130 bfd_elf_generic_reloc, /* special_function */ 131 "R_FRV_GPREL12", /* name */ 132 FALSE, /* partial_inplace */ 133 0xfff, /* src_mask */ 134 0xfff, /* dst_mask */ 135 FALSE), /* pcrel_offset */ 136 137 HOWTO (R_FRV_GPRELU12, /* type */ 138 0, /* rightshift */ 139 2, /* size (0 = byte, 1 = short, 2 = long) */ 140 12, /* bitsize */ 141 FALSE, /* pc_relative */ 142 0, /* bitpos */ 143 complain_overflow_dont, /* complain_on_overflow */ 144 bfd_elf_generic_reloc, /* special_function */ 145 "R_FRV_GPRELU12", /* name */ 146 FALSE, /* partial_inplace */ 147 0xfff, /* src_mask */ 148 0x3f03f, /* dst_mask */ 149 FALSE), /* pcrel_offset */ 150 151 HOWTO (R_FRV_GPREL32, /* type */ 152 0, /* rightshift */ 153 2, /* size (0 = byte, 1 = short, 2 = long) */ 154 32, /* bitsize */ 155 FALSE, /* pc_relative */ 156 0, /* bitpos */ 157 complain_overflow_dont, /* complain_on_overflow */ 158 bfd_elf_generic_reloc, /* special_function */ 159 "R_FRV_GPREL32", /* name */ 160 FALSE, /* partial_inplace */ 161 0xffffffff, /* src_mask */ 162 0xffffffff, /* dst_mask */ 163 FALSE), /* pcrel_offset */ 164 165 HOWTO (R_FRV_GPRELHI, /* type */ 166 0, /* rightshift */ 167 2, /* size (0 = byte, 1 = short, 2 = long) */ 168 16, /* bitsize */ 169 FALSE, /* pc_relative */ 170 0, /* bitpos */ 171 complain_overflow_dont, /* complain_on_overflow */ 172 bfd_elf_generic_reloc, /* special_function */ 173 "R_FRV_GPRELHI", /* name */ 174 FALSE, /* partial_inplace */ 175 0xffff, /* src_mask */ 176 0xffff, /* dst_mask */ 177 FALSE), /* pcrel_offset */ 178 179 HOWTO (R_FRV_GPRELLO, /* type */ 180 0, /* rightshift */ 181 2, /* size (0 = byte, 1 = short, 2 = long) */ 182 16, /* bitsize */ 183 FALSE, /* pc_relative */ 184 0, /* bitpos */ 185 complain_overflow_dont, /* complain_on_overflow */ 186 bfd_elf_generic_reloc, /* special_function */ 187 "R_FRV_GPRELLO", /* name */ 188 FALSE, /* partial_inplace */ 189 0xffff, /* src_mask */ 190 0xffff, /* dst_mask */ 191 FALSE), /* pcrel_offset */ 192 193 /* A 12-bit signed operand with the GOT offset for the address of 194 the symbol. */ 195 HOWTO (R_FRV_GOT12, /* type */ 196 0, /* rightshift */ 197 2, /* size (0 = byte, 1 = short, 2 = long) */ 198 12, /* bitsize */ 199 FALSE, /* pc_relative */ 200 0, /* bitpos */ 201 complain_overflow_signed, /* complain_on_overflow */ 202 bfd_elf_generic_reloc, /* special_function */ 203 "R_FRV_GOT12", /* name */ 204 FALSE, /* partial_inplace */ 205 0xfff, /* src_mask */ 206 0xfff, /* dst_mask */ 207 FALSE), /* pcrel_offset */ 208 209 /* The upper 16 bits of the GOT offset for the address of the 210 symbol. */ 211 HOWTO (R_FRV_GOTHI, /* type */ 212 0, /* rightshift */ 213 2, /* size (0 = byte, 1 = short, 2 = long) */ 214 16, /* bitsize */ 215 FALSE, /* pc_relative */ 216 0, /* bitpos */ 217 complain_overflow_dont, /* complain_on_overflow */ 218 bfd_elf_generic_reloc, /* special_function */ 219 "R_FRV_GOTHI", /* name */ 220 FALSE, /* partial_inplace */ 221 0xffff, /* src_mask */ 222 0xffff, /* dst_mask */ 223 FALSE), /* pcrel_offset */ 224 225 /* The lower 16 bits of the GOT offset for the address of the 226 symbol. */ 227 HOWTO (R_FRV_GOTLO, /* type */ 228 0, /* rightshift */ 229 2, /* size (0 = byte, 1 = short, 2 = long) */ 230 16, /* bitsize */ 231 FALSE, /* pc_relative */ 232 0, /* bitpos */ 233 complain_overflow_dont, /* complain_on_overflow */ 234 bfd_elf_generic_reloc, /* special_function */ 235 "R_FRV_GOTLO", /* name */ 236 FALSE, /* partial_inplace */ 237 0xffff, /* src_mask */ 238 0xffff, /* dst_mask */ 239 FALSE), /* pcrel_offset */ 240 241 /* The 32-bit address of the canonical descriptor of a function. */ 242 HOWTO (R_FRV_FUNCDESC, /* type */ 243 0, /* rightshift */ 244 2, /* size (0 = byte, 1 = short, 2 = long) */ 245 32, /* bitsize */ 246 FALSE, /* pc_relative */ 247 0, /* bitpos */ 248 complain_overflow_bitfield, /* complain_on_overflow */ 249 bfd_elf_generic_reloc, /* special_function */ 250 "R_FRV_FUNCDESC", /* name */ 251 FALSE, /* partial_inplace */ 252 0xffffffff, /* src_mask */ 253 0xffffffff, /* dst_mask */ 254 FALSE), /* pcrel_offset */ 255 256 /* A 12-bit signed operand with the GOT offset for the address of 257 canonical descriptor of a function. */ 258 HOWTO (R_FRV_FUNCDESC_GOT12, /* type */ 259 0, /* rightshift */ 260 2, /* size (0 = byte, 1 = short, 2 = long) */ 261 12, /* bitsize */ 262 FALSE, /* pc_relative */ 263 0, /* bitpos */ 264 complain_overflow_signed, /* complain_on_overflow */ 265 bfd_elf_generic_reloc, /* special_function */ 266 "R_FRV_FUNCDESC_GOT12", /* name */ 267 FALSE, /* partial_inplace */ 268 0xfff, /* src_mask */ 269 0xfff, /* dst_mask */ 270 FALSE), /* pcrel_offset */ 271 272 /* The upper 16 bits of the GOT offset for the address of the 273 canonical descriptor of a function. */ 274 HOWTO (R_FRV_FUNCDESC_GOTHI, /* type */ 275 0, /* rightshift */ 276 2, /* size (0 = byte, 1 = short, 2 = long) */ 277 16, /* bitsize */ 278 FALSE, /* pc_relative */ 279 0, /* bitpos */ 280 complain_overflow_dont, /* complain_on_overflow */ 281 bfd_elf_generic_reloc, /* special_function */ 282 "R_FRV_FUNCDESC_GOTHI", /* name */ 283 FALSE, /* partial_inplace */ 284 0xffff, /* src_mask */ 285 0xffff, /* dst_mask */ 286 FALSE), /* pcrel_offset */ 287 288 /* The lower 16 bits of the GOT offset for the address of the 289 canonical descriptor of a function. */ 290 HOWTO (R_FRV_FUNCDESC_GOTLO, /* type */ 291 0, /* rightshift */ 292 2, /* size (0 = byte, 1 = short, 2 = long) */ 293 16, /* bitsize */ 294 FALSE, /* pc_relative */ 295 0, /* bitpos */ 296 complain_overflow_dont, /* complain_on_overflow */ 297 bfd_elf_generic_reloc, /* special_function */ 298 "R_FRV_FUNCDESC_GOTLO", /* name */ 299 FALSE, /* partial_inplace */ 300 0xffff, /* src_mask */ 301 0xffff, /* dst_mask */ 302 FALSE), /* pcrel_offset */ 303 304 /* The 64-bit descriptor of a function. */ 305 HOWTO (R_FRV_FUNCDESC_VALUE, /* type */ 306 0, /* rightshift */ 307 2, /* size (0 = byte, 1 = short, 2 = long) */ 308 64, /* bitsize */ 309 FALSE, /* pc_relative */ 310 0, /* bitpos */ 311 complain_overflow_bitfield, /* complain_on_overflow */ 312 bfd_elf_generic_reloc, /* special_function */ 313 "R_FRV_FUNCDESC_VALUE", /* name */ 314 FALSE, /* partial_inplace */ 315 0xffffffff, /* src_mask */ 316 0xffffffff, /* dst_mask */ 317 FALSE), /* pcrel_offset */ 318 319 /* A 12-bit signed operand with the GOT offset for the address of 320 canonical descriptor of a function. */ 321 HOWTO (R_FRV_FUNCDESC_GOTOFF12, /* type */ 322 0, /* rightshift */ 323 2, /* size (0 = byte, 1 = short, 2 = long) */ 324 12, /* bitsize */ 325 FALSE, /* pc_relative */ 326 0, /* bitpos */ 327 complain_overflow_signed, /* complain_on_overflow */ 328 bfd_elf_generic_reloc, /* special_function */ 329 "R_FRV_FUNCDESC_GOTOFF12", /* name */ 330 FALSE, /* partial_inplace */ 331 0xfff, /* src_mask */ 332 0xfff, /* dst_mask */ 333 FALSE), /* pcrel_offset */ 334 335 /* The upper 16 bits of the GOT offset for the address of the 336 canonical descriptor of a function. */ 337 HOWTO (R_FRV_FUNCDESC_GOTOFFHI, /* type */ 338 0, /* rightshift */ 339 2, /* size (0 = byte, 1 = short, 2 = long) */ 340 16, /* bitsize */ 341 FALSE, /* pc_relative */ 342 0, /* bitpos */ 343 complain_overflow_dont, /* complain_on_overflow */ 344 bfd_elf_generic_reloc, /* special_function */ 345 "R_FRV_FUNCDESC_GOTOFFHI", /* name */ 346 FALSE, /* partial_inplace */ 347 0xffff, /* src_mask */ 348 0xffff, /* dst_mask */ 349 FALSE), /* pcrel_offset */ 350 351 /* The lower 16 bits of the GOT offset for the address of the 352 canonical descriptor of a function. */ 353 HOWTO (R_FRV_FUNCDESC_GOTOFFLO, /* type */ 354 0, /* rightshift */ 355 2, /* size (0 = byte, 1 = short, 2 = long) */ 356 16, /* bitsize */ 357 FALSE, /* pc_relative */ 358 0, /* bitpos */ 359 complain_overflow_dont, /* complain_on_overflow */ 360 bfd_elf_generic_reloc, /* special_function */ 361 "R_FRV_FUNCDESC_GOTOFFLO", /* name */ 362 FALSE, /* partial_inplace */ 363 0xffff, /* src_mask */ 364 0xffff, /* dst_mask */ 365 FALSE), /* pcrel_offset */ 366 367 /* A 12-bit signed operand with the GOT offset for the address of 368 the symbol. */ 369 HOWTO (R_FRV_GOTOFF12, /* type */ 370 0, /* rightshift */ 371 2, /* size (0 = byte, 1 = short, 2 = long) */ 372 12, /* bitsize */ 373 FALSE, /* pc_relative */ 374 0, /* bitpos */ 375 complain_overflow_signed, /* complain_on_overflow */ 376 bfd_elf_generic_reloc, /* special_function */ 377 "R_FRV_GOTOFF12", /* name */ 378 FALSE, /* partial_inplace */ 379 0xfff, /* src_mask */ 380 0xfff, /* dst_mask */ 381 FALSE), /* pcrel_offset */ 382 383 /* The upper 16 bits of the GOT offset for the address of the 384 symbol. */ 385 HOWTO (R_FRV_GOTOFFHI, /* type */ 386 0, /* rightshift */ 387 2, /* size (0 = byte, 1 = short, 2 = long) */ 388 16, /* bitsize */ 389 FALSE, /* pc_relative */ 390 0, /* bitpos */ 391 complain_overflow_dont, /* complain_on_overflow */ 392 bfd_elf_generic_reloc, /* special_function */ 393 "R_FRV_GOTOFFHI", /* name */ 394 FALSE, /* partial_inplace */ 395 0xffff, /* src_mask */ 396 0xffff, /* dst_mask */ 397 FALSE), /* pcrel_offset */ 398 399 /* The lower 16 bits of the GOT offset for the address of the 400 symbol. */ 401 HOWTO (R_FRV_GOTOFFLO, /* type */ 402 0, /* rightshift */ 403 2, /* size (0 = byte, 1 = short, 2 = long) */ 404 16, /* bitsize */ 405 FALSE, /* pc_relative */ 406 0, /* bitpos */ 407 complain_overflow_dont, /* complain_on_overflow */ 408 bfd_elf_generic_reloc, /* special_function */ 409 "R_FRV_GOTOFFLO", /* name */ 410 FALSE, /* partial_inplace */ 411 0xffff, /* src_mask */ 412 0xffff, /* dst_mask */ 413 FALSE), /* pcrel_offset */ 414 415 /* A 24-bit pc-relative relocation referencing the TLS PLT entry for 416 a thread-local symbol. If the symbol number is 0, it refers to 417 the module. */ 418 HOWTO (R_FRV_GETTLSOFF, /* type */ 419 2, /* rightshift */ 420 2, /* size (0 = byte, 1 = short, 2 = long) */ 421 26, /* bitsize */ 422 TRUE, /* pc_relative */ 423 0, /* bitpos */ 424 complain_overflow_bitfield, /* complain_on_overflow */ 425 bfd_elf_generic_reloc, /* special_function */ 426 "R_FRV_GETTLSOFF", /* name */ 427 FALSE, /* partial_inplace */ 428 0x7e03ffff, /* src_mask */ 429 0x7e03ffff, /* dst_mask */ 430 TRUE), /* pcrel_offset */ 431 432 /* A 64-bit TLS descriptor for a symbol. This relocation is only 433 valid as a REL, dynamic relocation. */ 434 HOWTO (R_FRV_TLSDESC_VALUE, /* type */ 435 0, /* rightshift */ 436 2, /* size (0 = byte, 1 = short, 2 = long) */ 437 64, /* bitsize */ 438 FALSE, /* pc_relative */ 439 0, /* bitpos */ 440 complain_overflow_bitfield, /* complain_on_overflow */ 441 bfd_elf_generic_reloc, /* special_function */ 442 "R_FRV_TLSDESC_VALUE", /* name */ 443 FALSE, /* partial_inplace */ 444 0xffffffff, /* src_mask */ 445 0xffffffff, /* dst_mask */ 446 FALSE), /* pcrel_offset */ 447 448 /* A 12-bit signed operand with the GOT offset for the TLS 449 descriptor of the symbol. */ 450 HOWTO (R_FRV_GOTTLSDESC12, /* type */ 451 0, /* rightshift */ 452 2, /* size (0 = byte, 1 = short, 2 = long) */ 453 12, /* bitsize */ 454 FALSE, /* pc_relative */ 455 0, /* bitpos */ 456 complain_overflow_signed, /* complain_on_overflow */ 457 bfd_elf_generic_reloc, /* special_function */ 458 "R_FRV_GOTTLSDESC12", /* name */ 459 FALSE, /* partial_inplace */ 460 0xfff, /* src_mask */ 461 0xfff, /* dst_mask */ 462 FALSE), /* pcrel_offset */ 463 464 /* The upper 16 bits of the GOT offset for the TLS descriptor of the 465 symbol. */ 466 HOWTO (R_FRV_GOTTLSDESCHI, /* type */ 467 0, /* rightshift */ 468 2, /* size (0 = byte, 1 = short, 2 = long) */ 469 16, /* bitsize */ 470 FALSE, /* pc_relative */ 471 0, /* bitpos */ 472 complain_overflow_dont, /* complain_on_overflow */ 473 bfd_elf_generic_reloc, /* special_function */ 474 "R_FRV_GOTTLSDESCHI", /* name */ 475 FALSE, /* partial_inplace */ 476 0xffff, /* src_mask */ 477 0xffff, /* dst_mask */ 478 FALSE), /* pcrel_offset */ 479 480 /* The lower 16 bits of the GOT offset for the TLS descriptor of the 481 symbol. */ 482 HOWTO (R_FRV_GOTTLSDESCLO, /* type */ 483 0, /* rightshift */ 484 2, /* size (0 = byte, 1 = short, 2 = long) */ 485 16, /* bitsize */ 486 FALSE, /* pc_relative */ 487 0, /* bitpos */ 488 complain_overflow_dont, /* complain_on_overflow */ 489 bfd_elf_generic_reloc, /* special_function */ 490 "R_FRV_GOTTLSDESCLO", /* name */ 491 FALSE, /* partial_inplace */ 492 0xffff, /* src_mask */ 493 0xffff, /* dst_mask */ 494 FALSE), /* pcrel_offset */ 495 496 /* A 12-bit signed operand with the offset from the module base 497 address to the thread-local symbol address. */ 498 HOWTO (R_FRV_TLSMOFF12, /* type */ 499 0, /* rightshift */ 500 2, /* size (0 = byte, 1 = short, 2 = long) */ 501 12, /* bitsize */ 502 FALSE, /* pc_relative */ 503 0, /* bitpos */ 504 complain_overflow_signed, /* complain_on_overflow */ 505 bfd_elf_generic_reloc, /* special_function */ 506 "R_FRV_TLSMOFF12", /* name */ 507 FALSE, /* partial_inplace */ 508 0xfff, /* src_mask */ 509 0xfff, /* dst_mask */ 510 FALSE), /* pcrel_offset */ 511 512 /* The upper 16 bits of the offset from the module base address to 513 the thread-local symbol address. */ 514 HOWTO (R_FRV_TLSMOFFHI, /* type */ 515 0, /* rightshift */ 516 2, /* size (0 = byte, 1 = short, 2 = long) */ 517 16, /* bitsize */ 518 FALSE, /* pc_relative */ 519 0, /* bitpos */ 520 complain_overflow_dont, /* complain_on_overflow */ 521 bfd_elf_generic_reloc, /* special_function */ 522 "R_FRV_TLSMOFFHI", /* name */ 523 FALSE, /* partial_inplace */ 524 0xffff, /* src_mask */ 525 0xffff, /* dst_mask */ 526 FALSE), /* pcrel_offset */ 527 528 /* The lower 16 bits of the offset from the module base address to 529 the thread-local symbol address. */ 530 HOWTO (R_FRV_TLSMOFFLO, /* type */ 531 0, /* rightshift */ 532 2, /* size (0 = byte, 1 = short, 2 = long) */ 533 16, /* bitsize */ 534 FALSE, /* pc_relative */ 535 0, /* bitpos */ 536 complain_overflow_dont, /* complain_on_overflow */ 537 bfd_elf_generic_reloc, /* special_function */ 538 "R_FRV_TLSMOFFLO", /* name */ 539 FALSE, /* partial_inplace */ 540 0xffff, /* src_mask */ 541 0xffff, /* dst_mask */ 542 FALSE), /* pcrel_offset */ 543 544 /* A 12-bit signed operand with the GOT offset for the TLSOFF entry 545 for a symbol. */ 546 HOWTO (R_FRV_GOTTLSOFF12, /* type */ 547 0, /* rightshift */ 548 2, /* size (0 = byte, 1 = short, 2 = long) */ 549 12, /* bitsize */ 550 FALSE, /* pc_relative */ 551 0, /* bitpos */ 552 complain_overflow_signed, /* complain_on_overflow */ 553 bfd_elf_generic_reloc, /* special_function */ 554 "R_FRV_GOTTLSOFF12", /* name */ 555 FALSE, /* partial_inplace */ 556 0xfff, /* src_mask */ 557 0xfff, /* dst_mask */ 558 FALSE), /* pcrel_offset */ 559 560 /* The upper 16 bits of the GOT offset for the TLSOFF entry for a 561 symbol. */ 562 HOWTO (R_FRV_GOTTLSOFFHI, /* type */ 563 0, /* rightshift */ 564 2, /* size (0 = byte, 1 = short, 2 = long) */ 565 16, /* bitsize */ 566 FALSE, /* pc_relative */ 567 0, /* bitpos */ 568 complain_overflow_dont, /* complain_on_overflow */ 569 bfd_elf_generic_reloc, /* special_function */ 570 "R_FRV_GOTTLSOFFHI", /* name */ 571 FALSE, /* partial_inplace */ 572 0xffff, /* src_mask */ 573 0xffff, /* dst_mask */ 574 FALSE), /* pcrel_offset */ 575 576 /* The lower 16 bits of the GOT offset for the TLSOFF entry for a 577 symbol. */ 578 HOWTO (R_FRV_GOTTLSOFFLO, /* type */ 579 0, /* rightshift */ 580 2, /* size (0 = byte, 1 = short, 2 = long) */ 581 16, /* bitsize */ 582 FALSE, /* pc_relative */ 583 0, /* bitpos */ 584 complain_overflow_dont, /* complain_on_overflow */ 585 bfd_elf_generic_reloc, /* special_function */ 586 "R_FRV_GOTTLSOFFLO", /* name */ 587 FALSE, /* partial_inplace */ 588 0xffff, /* src_mask */ 589 0xffff, /* dst_mask */ 590 FALSE), /* pcrel_offset */ 591 592 /* The 32-bit offset from the thread pointer (not the module base 593 address) to a thread-local symbol. */ 594 HOWTO (R_FRV_TLSOFF, /* type */ 595 0, /* rightshift */ 596 2, /* size (0 = byte, 1 = short, 2 = long) */ 597 32, /* bitsize */ 598 FALSE, /* pc_relative */ 599 0, /* bitpos */ 600 complain_overflow_dont, /* complain_on_overflow */ 601 bfd_elf_generic_reloc, /* special_function */ 602 "R_FRV_TLSOFF", /* name */ 603 FALSE, /* partial_inplace */ 604 0xffffffff, /* src_mask */ 605 0xffffffff, /* dst_mask */ 606 FALSE), /* pcrel_offset */ 607 608 /* An annotation for linker relaxation, that denotes the 609 symbol+addend whose TLS descriptor is referenced by the sum of 610 the two input registers of an ldd instruction. */ 611 HOWTO (R_FRV_TLSDESC_RELAX, /* type */ 612 0, /* rightshift */ 613 2, /* size (0 = byte, 1 = short, 2 = long) */ 614 0, /* bitsize */ 615 FALSE, /* pc_relative */ 616 0, /* bitpos */ 617 complain_overflow_dont, /* complain_on_overflow */ 618 bfd_elf_generic_reloc, /* special_function */ 619 "R_FRV_TLSDESC_RELAX", /* name */ 620 FALSE, /* partial_inplace */ 621 0, /* src_mask */ 622 0, /* dst_mask */ 623 FALSE), /* pcrel_offset */ 624 625 /* An annotation for linker relaxation, that denotes the 626 symbol+addend whose TLS resolver entry point is given by the sum 627 of the two register operands of an calll instruction. */ 628 HOWTO (R_FRV_GETTLSOFF_RELAX, /* type */ 629 0, /* rightshift */ 630 2, /* size (0 = byte, 1 = short, 2 = long) */ 631 0, /* bitsize */ 632 FALSE, /* pc_relative */ 633 0, /* bitpos */ 634 complain_overflow_dont, /* complain_on_overflow */ 635 bfd_elf_generic_reloc, /* special_function */ 636 "R_FRV_GETTLSOFF_RELAX", /* name */ 637 FALSE, /* partial_inplace */ 638 0, /* src_mask */ 639 0, /* dst_mask */ 640 FALSE), /* pcrel_offset */ 641 642 /* An annotation for linker relaxation, that denotes the 643 symbol+addend whose TLS offset GOT entry is given by the sum of 644 the two input registers of an ld instruction. */ 645 HOWTO (R_FRV_TLSOFF_RELAX, /* type */ 646 0, /* rightshift */ 647 2, /* size (0 = byte, 1 = short, 2 = long) */ 648 0, /* bitsize */ 649 FALSE, /* pc_relative */ 650 0, /* bitpos */ 651 complain_overflow_bitfield, /* complain_on_overflow */ 652 bfd_elf_generic_reloc, /* special_function */ 653 "R_FRV_TLSOFF_RELAX", /* name */ 654 FALSE, /* partial_inplace */ 655 0, /* src_mask */ 656 0, /* dst_mask */ 657 FALSE), /* pcrel_offset */ 658 659 /* A 32-bit offset from the module base address to 660 the thread-local symbol address. */ 661 HOWTO (R_FRV_TLSMOFF, /* type */ 662 0, /* rightshift */ 663 2, /* size (0 = byte, 1 = short, 2 = long) */ 664 32, /* bitsize */ 665 FALSE, /* pc_relative */ 666 0, /* bitpos */ 667 complain_overflow_dont, /* complain_on_overflow */ 668 bfd_elf_generic_reloc, /* special_function */ 669 "R_FRV_TLSMOFF", /* name */ 670 FALSE, /* partial_inplace */ 671 0xffffffff, /* src_mask */ 672 0xffffffff, /* dst_mask */ 673 FALSE), /* pcrel_offset */ 674 }; 675 676 /* GNU extension to record C++ vtable hierarchy. */ 677 static reloc_howto_type elf32_frv_vtinherit_howto = 678 HOWTO (R_FRV_GNU_VTINHERIT, /* type */ 679 0, /* rightshift */ 680 2, /* size (0 = byte, 1 = short, 2 = long) */ 681 0, /* bitsize */ 682 FALSE, /* pc_relative */ 683 0, /* bitpos */ 684 complain_overflow_dont, /* complain_on_overflow */ 685 NULL, /* special_function */ 686 "R_FRV_GNU_VTINHERIT", /* name */ 687 FALSE, /* partial_inplace */ 688 0, /* src_mask */ 689 0, /* dst_mask */ 690 FALSE); /* pcrel_offset */ 691 692 /* GNU extension to record C++ vtable member usage. */ 693 static reloc_howto_type elf32_frv_vtentry_howto = 694 HOWTO (R_FRV_GNU_VTENTRY, /* type */ 695 0, /* rightshift */ 696 2, /* size (0 = byte, 1 = short, 2 = long) */ 697 0, /* bitsize */ 698 FALSE, /* pc_relative */ 699 0, /* bitpos */ 700 complain_overflow_dont, /* complain_on_overflow */ 701 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 702 "R_FRV_GNU_VTENTRY", /* name */ 703 FALSE, /* partial_inplace */ 704 0, /* src_mask */ 705 0, /* dst_mask */ 706 FALSE); /* pcrel_offset */ 707 708 /* The following 3 relocations are REL. The only difference to the 709 entries in the table above are that partial_inplace is TRUE. */ 710 static reloc_howto_type elf32_frv_rel_32_howto = 711 HOWTO (R_FRV_32, /* type */ 712 0, /* rightshift */ 713 2, /* size (0 = byte, 1 = short, 2 = long) */ 714 32, /* bitsize */ 715 FALSE, /* pc_relative */ 716 0, /* bitpos */ 717 complain_overflow_bitfield, /* complain_on_overflow */ 718 bfd_elf_generic_reloc, /* special_function */ 719 "R_FRV_32", /* name */ 720 TRUE, /* partial_inplace */ 721 0xffffffff, /* src_mask */ 722 0xffffffff, /* dst_mask */ 723 FALSE); /* pcrel_offset */ 724 725 static reloc_howto_type elf32_frv_rel_funcdesc_howto = 726 HOWTO (R_FRV_FUNCDESC, /* type */ 727 0, /* rightshift */ 728 2, /* size (0 = byte, 1 = short, 2 = long) */ 729 32, /* bitsize */ 730 FALSE, /* pc_relative */ 731 0, /* bitpos */ 732 complain_overflow_bitfield, /* complain_on_overflow */ 733 bfd_elf_generic_reloc, /* special_function */ 734 "R_FRV_FUNCDESC", /* name */ 735 TRUE, /* partial_inplace */ 736 0xffffffff, /* src_mask */ 737 0xffffffff, /* dst_mask */ 738 FALSE); /* pcrel_offset */ 739 740 static reloc_howto_type elf32_frv_rel_funcdesc_value_howto = 741 HOWTO (R_FRV_FUNCDESC_VALUE, /* type */ 742 0, /* rightshift */ 743 2, /* size (0 = byte, 1 = short, 2 = long) */ 744 64, /* bitsize */ 745 FALSE, /* pc_relative */ 746 0, /* bitpos */ 747 complain_overflow_bitfield, /* complain_on_overflow */ 748 bfd_elf_generic_reloc, /* special_function */ 749 "R_FRV_FUNCDESC_VALUE", /* name */ 750 TRUE, /* partial_inplace */ 751 0xffffffff, /* src_mask */ 752 0xffffffff, /* dst_mask */ 753 FALSE); /* pcrel_offset */ 754 755 static reloc_howto_type elf32_frv_rel_tlsdesc_value_howto = 756 /* A 64-bit TLS descriptor for a symbol. The first word resolves to 757 an entry point, and the second resolves to a special argument. 758 If the symbol turns out to be in static TLS, the entry point is a 759 return instruction, and the special argument is the TLS offset 760 for the symbol. If it's in dynamic TLS, the entry point is a TLS 761 offset resolver, and the special argument is a pointer to a data 762 structure allocated by the dynamic loader, containing the GOT 763 address for the offset resolver, the module id, the offset within 764 the module, and anything else the TLS offset resolver might need 765 to determine the TLS offset for the symbol in the running 766 thread. */ 767 HOWTO (R_FRV_TLSDESC_VALUE, /* type */ 768 0, /* rightshift */ 769 2, /* size (0 = byte, 1 = short, 2 = long) */ 770 64, /* bitsize */ 771 FALSE, /* pc_relative */ 772 0, /* bitpos */ 773 complain_overflow_bitfield, /* complain_on_overflow */ 774 bfd_elf_generic_reloc, /* special_function */ 775 "R_FRV_TLSDESC_VALUE", /* name */ 776 TRUE, /* partial_inplace */ 777 0xffffffff, /* src_mask */ 778 0xffffffff, /* dst_mask */ 779 FALSE); /* pcrel_offset */ 780 781 static reloc_howto_type elf32_frv_rel_tlsoff_howto = 782 /* The 32-bit offset from the thread pointer (not the module base 783 address) to a thread-local symbol. */ 784 HOWTO (R_FRV_TLSOFF, /* type */ 785 0, /* rightshift */ 786 2, /* size (0 = byte, 1 = short, 2 = long) */ 787 32, /* bitsize */ 788 FALSE, /* pc_relative */ 789 0, /* bitpos */ 790 complain_overflow_bitfield, /* complain_on_overflow */ 791 bfd_elf_generic_reloc, /* special_function */ 792 "R_FRV_TLSOFF", /* name */ 793 TRUE, /* partial_inplace */ 794 0xffffffff, /* src_mask */ 795 0xffffffff, /* dst_mask */ 796 FALSE); /* pcrel_offset */ 797 798 799 800 extern const bfd_target frv_elf32_fdpic_vec; 801 #define IS_FDPIC(bfd) ((bfd)->xvec == &frv_elf32_fdpic_vec) 802 803 /* An extension of the elf hash table data structure, containing some 804 additional FRV-specific data. */ 805 struct frvfdpic_elf_link_hash_table 806 { 807 struct elf_link_hash_table elf; 808 809 /* A pointer to the .rofixup section. */ 810 asection *sgotfixup; 811 /* GOT base offset. */ 812 bfd_vma got0; 813 /* Location of the first non-lazy PLT entry, i.e., the number of 814 bytes taken by lazy PLT entries. If locally-bound TLS 815 descriptors require a ret instruction, it will be placed at this 816 offset. */ 817 bfd_vma plt0; 818 /* A hash table holding information about which symbols were 819 referenced with which PIC-related relocations. */ 820 struct htab *relocs_info; 821 /* Summary reloc information collected by 822 _frvfdpic_count_got_plt_entries. */ 823 struct _frvfdpic_dynamic_got_info *g; 824 }; 825 826 /* Get the FRV ELF linker hash table from a link_info structure. */ 827 828 #define frvfdpic_hash_table(p) \ 829 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 830 == FRV_ELF_DATA ? ((struct frvfdpic_elf_link_hash_table *) ((p)->hash)) : NULL) 831 832 #define frvfdpic_got_section(info) \ 833 (frvfdpic_hash_table (info)->elf.sgot) 834 #define frvfdpic_gotrel_section(info) \ 835 (frvfdpic_hash_table (info)->elf.srelgot) 836 #define frvfdpic_gotfixup_section(info) \ 837 (frvfdpic_hash_table (info)->sgotfixup) 838 #define frvfdpic_plt_section(info) \ 839 (frvfdpic_hash_table (info)->elf.splt) 840 #define frvfdpic_pltrel_section(info) \ 841 (frvfdpic_hash_table (info)->elf.srelplt) 842 #define frvfdpic_relocs_info(info) \ 843 (frvfdpic_hash_table (info)->relocs_info) 844 #define frvfdpic_got_initial_offset(info) \ 845 (frvfdpic_hash_table (info)->got0) 846 #define frvfdpic_plt_initial_offset(info) \ 847 (frvfdpic_hash_table (info)->plt0) 848 #define frvfdpic_dynamic_got_plt_info(info) \ 849 (frvfdpic_hash_table (info)->g) 850 851 /* Currently it's the same, but if some day we have a reason to change 852 it, we'd better be using a different macro. 853 854 FIXME: if there's any TLS PLT entry that uses local-exec or 855 initial-exec models, we could use the ret at the end of any of them 856 instead of adding one more. */ 857 #define frvfdpic_plt_tls_ret_offset(info) \ 858 (frvfdpic_plt_initial_offset (info)) 859 860 /* The name of the dynamic interpreter. This is put in the .interp 861 section. */ 862 863 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" 864 865 #define DEFAULT_STACK_SIZE 0x20000 866 867 /* This structure is used to collect the number of entries present in 868 each addressable range of the got. */ 869 struct _frvfdpic_dynamic_got_info 870 { 871 /* Several bits of information about the current link. */ 872 struct bfd_link_info *info; 873 /* Total GOT size needed for GOT entries within the 12-, 16- or 32-bit 874 ranges. */ 875 bfd_vma got12, gotlos, gothilo; 876 /* Total GOT size needed for function descriptor entries within the 12-, 877 16- or 32-bit ranges. */ 878 bfd_vma fd12, fdlos, fdhilo; 879 /* Total GOT size needed by function descriptor entries referenced 880 in PLT entries, that would be profitable to place in offsets 881 close to the PIC register. */ 882 bfd_vma fdplt; 883 /* Total PLT size needed by lazy PLT entries. */ 884 bfd_vma lzplt; 885 /* Total GOT size needed for TLS descriptor entries within the 12-, 886 16- or 32-bit ranges. */ 887 bfd_vma tlsd12, tlsdlos, tlsdhilo; 888 /* Total GOT size needed by TLS descriptors referenced in PLT 889 entries, that would be profitable to place in offers close to the 890 PIC register. */ 891 bfd_vma tlsdplt; 892 /* Total PLT size needed by TLS lazy PLT entries. */ 893 bfd_vma tlslzplt; 894 /* Number of relocations carried over from input object files. */ 895 unsigned long relocs; 896 /* Number of fixups introduced by relocations in input object files. */ 897 unsigned long fixups; 898 /* The number of fixups that reference the ret instruction added to 899 the PLT for locally-resolved TLS descriptors. */ 900 unsigned long tls_ret_refs; 901 }; 902 903 /* This structure is used to assign offsets to got entries, function 904 descriptors, plt entries and lazy plt entries. */ 905 906 struct _frvfdpic_dynamic_got_plt_info 907 { 908 /* Summary information collected with _frvfdpic_count_got_plt_entries. */ 909 struct _frvfdpic_dynamic_got_info g; 910 911 /* For each addressable range, we record a MAX (positive) and MIN 912 (negative) value. CUR is used to assign got entries, and it's 913 incremented from an initial positive value to MAX, then from MIN 914 to FDCUR (unless FDCUR wraps around first). FDCUR is used to 915 assign function descriptors, and it's decreased from an initial 916 non-positive value to MIN, then from MAX down to CUR (unless CUR 917 wraps around first). All of MIN, MAX, CUR and FDCUR always point 918 to even words. ODD, if non-zero, indicates an odd word to be 919 used for the next got entry, otherwise CUR is used and 920 incremented by a pair of words, wrapping around when it reaches 921 MAX. FDCUR is decremented (and wrapped) before the next function 922 descriptor is chosen. FDPLT indicates the number of remaining 923 slots that can be used for function descriptors used only by PLT 924 entries. 925 926 TMAX, TMIN and TCUR are used to assign TLS descriptors. TCUR 927 starts as MAX, and grows up to TMAX, then wraps around to TMIN 928 and grows up to MIN. TLSDPLT indicates the number of remaining 929 slots that can be used for TLS descriptors used only by TLS PLT 930 entries. */ 931 struct _frvfdpic_dynamic_got_alloc_data 932 { 933 bfd_signed_vma max, cur, odd, fdcur, min; 934 bfd_signed_vma tmax, tcur, tmin; 935 bfd_vma fdplt, tlsdplt; 936 } got12, gotlos, gothilo; 937 }; 938 939 /* Create an FRV ELF linker hash table. */ 940 941 static struct bfd_link_hash_table * 942 frvfdpic_elf_link_hash_table_create (bfd *abfd) 943 { 944 struct frvfdpic_elf_link_hash_table *ret; 945 bfd_size_type amt = sizeof (struct frvfdpic_elf_link_hash_table); 946 947 ret = bfd_zmalloc (amt); 948 if (ret == NULL) 949 return NULL; 950 951 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, 952 _bfd_elf_link_hash_newfunc, 953 sizeof (struct elf_link_hash_entry), 954 FRV_ELF_DATA)) 955 { 956 free (ret); 957 return NULL; 958 } 959 960 return &ret->elf.root; 961 } 962 963 /* Decide whether a reference to a symbol can be resolved locally or 964 not. If the symbol is protected, we want the local address, but 965 its function descriptor must be assigned by the dynamic linker. */ 966 #define FRVFDPIC_SYM_LOCAL(INFO, H) \ 967 (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \ 968 || ! elf_hash_table (INFO)->dynamic_sections_created) 969 #define FRVFDPIC_FUNCDESC_LOCAL(INFO, H) \ 970 ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created) 971 972 /* This structure collects information on what kind of GOT, PLT or 973 function descriptors are required by relocations that reference a 974 certain symbol. */ 975 struct frvfdpic_relocs_info 976 { 977 /* The index of the symbol, as stored in the relocation r_info, if 978 we have a local symbol; -1 otherwise. */ 979 long symndx; 980 union 981 { 982 /* The input bfd in which the symbol is defined, if it's a local 983 symbol. */ 984 bfd *abfd; 985 /* If symndx == -1, the hash table entry corresponding to a global 986 symbol (even if it turns out to bind locally, in which case it 987 should ideally be replaced with section's symndx + addend). */ 988 struct elf_link_hash_entry *h; 989 } d; 990 /* The addend of the relocation that references the symbol. */ 991 bfd_vma addend; 992 993 /* The fields above are used to identify an entry. The fields below 994 contain information on how an entry is used and, later on, which 995 locations it was assigned. */ 996 /* The following 3 fields record whether the symbol+addend above was 997 ever referenced with a GOT relocation. The 12 suffix indicates a 998 GOT12 relocation; los is used for GOTLO relocations that are not 999 matched by a GOTHI relocation; hilo is used for GOTLO/GOTHI 1000 pairs. */ 1001 unsigned got12:1; 1002 unsigned gotlos:1; 1003 unsigned gothilo:1; 1004 /* Whether a FUNCDESC relocation references symbol+addend. */ 1005 unsigned fd:1; 1006 /* Whether a FUNCDESC_GOT relocation references symbol+addend. */ 1007 unsigned fdgot12:1; 1008 unsigned fdgotlos:1; 1009 unsigned fdgothilo:1; 1010 /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */ 1011 unsigned fdgoff12:1; 1012 unsigned fdgofflos:1; 1013 unsigned fdgoffhilo:1; 1014 /* Whether a GETTLSOFF relocation references symbol+addend. */ 1015 unsigned tlsplt:1; 1016 /* FIXME: we should probably add tlspltdesc, tlspltoff and 1017 tlspltimm, to tell what kind of TLS PLT entry we're generating. 1018 We might instead just pre-compute flags telling whether the 1019 object is suitable for local exec, initial exec or general 1020 dynamic addressing, and use that all over the place. We could 1021 also try to do a better job of merging TLSOFF and TLSDESC entries 1022 in main executables, but perhaps we can get rid of TLSDESC 1023 entirely in them instead. */ 1024 /* Whether a GOTTLSDESC relocation references symbol+addend. */ 1025 unsigned tlsdesc12:1; 1026 unsigned tlsdesclos:1; 1027 unsigned tlsdeschilo:1; 1028 /* Whether a GOTTLSOFF relocation references symbol+addend. */ 1029 unsigned tlsoff12:1; 1030 unsigned tlsofflos:1; 1031 unsigned tlsoffhilo:1; 1032 /* Whether symbol+addend is referenced with GOTOFF12, GOTOFFLO or 1033 GOTOFFHI relocations. The addend doesn't really matter, since we 1034 envision that this will only be used to check whether the symbol 1035 is mapped to the same segment as the got. */ 1036 unsigned gotoff:1; 1037 /* Whether symbol+addend is referenced by a LABEL24 relocation. */ 1038 unsigned call:1; 1039 /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE 1040 relocation. */ 1041 unsigned sym:1; 1042 /* Whether we need a PLT entry for a symbol. Should be implied by 1043 something like: 1044 (call && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h)) */ 1045 unsigned plt:1; 1046 /* Whether a function descriptor should be created in this link unit 1047 for symbol+addend. Should be implied by something like: 1048 (plt || fdgotoff12 || fdgotofflos || fdgotofflohi 1049 || ((fd || fdgot12 || fdgotlos || fdgothilo) 1050 && (symndx != -1 || FRVFDPIC_FUNCDESC_LOCAL (info, d.h)))) */ 1051 unsigned privfd:1; 1052 /* Whether a lazy PLT entry is needed for this symbol+addend. 1053 Should be implied by something like: 1054 (privfd && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h) 1055 && ! (info->flags & DF_BIND_NOW)) */ 1056 unsigned lazyplt:1; 1057 /* Whether we've already emitted GOT relocations and PLT entries as 1058 needed for this symbol. */ 1059 unsigned done:1; 1060 1061 /* The number of R_FRV_32, R_FRV_FUNCDESC, R_FRV_FUNCDESC_VALUE and 1062 R_FRV_TLSDESC_VALUE, R_FRV_TLSOFF relocations referencing 1063 symbol+addend. */ 1064 unsigned relocs32, relocsfd, relocsfdv, relocstlsd, relocstlsoff; 1065 1066 /* The number of .rofixups entries and dynamic relocations allocated 1067 for this symbol, minus any that might have already been used. */ 1068 unsigned fixups, dynrelocs; 1069 1070 /* The offsets of the GOT entries assigned to symbol+addend, to the 1071 function descriptor's address, and to a function descriptor, 1072 respectively. Should be zero if unassigned. The offsets are 1073 counted from the value that will be assigned to the PIC register, 1074 not from the beginning of the .got section. */ 1075 bfd_signed_vma got_entry, fdgot_entry, fd_entry; 1076 /* The offsets of the PLT entries assigned to symbol+addend, 1077 non-lazy and lazy, respectively. If unassigned, should be 1078 (bfd_vma)-1. */ 1079 bfd_vma plt_entry, lzplt_entry; 1080 /* The offsets of the GOT entries for TLS offset and TLS descriptor. */ 1081 bfd_signed_vma tlsoff_entry, tlsdesc_entry; 1082 /* The offset of the TLS offset PLT entry. */ 1083 bfd_vma tlsplt_entry; 1084 }; 1085 1086 /* Compute a hash with the key fields of an frvfdpic_relocs_info entry. */ 1087 static hashval_t 1088 frvfdpic_relocs_info_hash (const void *entry_) 1089 { 1090 const struct frvfdpic_relocs_info *entry = entry_; 1091 1092 return (entry->symndx == -1 1093 ? (long) entry->d.h->root.root.hash 1094 : entry->symndx + (long) entry->d.abfd->id * 257) + entry->addend; 1095 } 1096 1097 /* Test whether the key fields of two frvfdpic_relocs_info entries are 1098 identical. */ 1099 static int 1100 frvfdpic_relocs_info_eq (const void *entry1, const void *entry2) 1101 { 1102 const struct frvfdpic_relocs_info *e1 = entry1; 1103 const struct frvfdpic_relocs_info *e2 = entry2; 1104 1105 return e1->symndx == e2->symndx && e1->addend == e2->addend 1106 && (e1->symndx == -1 ? e1->d.h == e2->d.h : e1->d.abfd == e2->d.abfd); 1107 } 1108 1109 /* Find or create an entry in a hash table HT that matches the key 1110 fields of the given ENTRY. If it's not found, memory for a new 1111 entry is allocated in ABFD's obstack. */ 1112 static struct frvfdpic_relocs_info * 1113 frvfdpic_relocs_info_find (struct htab *ht, 1114 bfd *abfd, 1115 const struct frvfdpic_relocs_info *entry, 1116 enum insert_option insert) 1117 { 1118 struct frvfdpic_relocs_info **loc = 1119 (struct frvfdpic_relocs_info **) htab_find_slot (ht, entry, insert); 1120 1121 if (! loc) 1122 return NULL; 1123 1124 if (*loc) 1125 return *loc; 1126 1127 *loc = bfd_zalloc (abfd, sizeof (**loc)); 1128 1129 if (! *loc) 1130 return *loc; 1131 1132 (*loc)->symndx = entry->symndx; 1133 (*loc)->d = entry->d; 1134 (*loc)->addend = entry->addend; 1135 (*loc)->plt_entry = (bfd_vma)-1; 1136 (*loc)->lzplt_entry = (bfd_vma)-1; 1137 (*loc)->tlsplt_entry = (bfd_vma)-1; 1138 1139 return *loc; 1140 } 1141 1142 /* Obtain the address of the entry in HT associated with H's symbol + 1143 addend, creating a new entry if none existed. ABFD is only used 1144 for memory allocation purposes. */ 1145 inline static struct frvfdpic_relocs_info * 1146 frvfdpic_relocs_info_for_global (struct htab *ht, 1147 bfd *abfd, 1148 struct elf_link_hash_entry *h, 1149 bfd_vma addend, 1150 enum insert_option insert) 1151 { 1152 struct frvfdpic_relocs_info entry; 1153 1154 entry.symndx = -1; 1155 entry.d.h = h; 1156 entry.addend = addend; 1157 1158 return frvfdpic_relocs_info_find (ht, abfd, &entry, insert); 1159 } 1160 1161 /* Obtain the address of the entry in HT associated with the SYMNDXth 1162 local symbol of the input bfd ABFD, plus the addend, creating a new 1163 entry if none existed. */ 1164 inline static struct frvfdpic_relocs_info * 1165 frvfdpic_relocs_info_for_local (struct htab *ht, 1166 bfd *abfd, 1167 long symndx, 1168 bfd_vma addend, 1169 enum insert_option insert) 1170 { 1171 struct frvfdpic_relocs_info entry; 1172 1173 entry.symndx = symndx; 1174 entry.d.abfd = abfd; 1175 entry.addend = addend; 1176 1177 return frvfdpic_relocs_info_find (ht, abfd, &entry, insert); 1178 } 1179 1180 /* Merge fields set by check_relocs() of two entries that end up being 1181 mapped to the same (presumably global) symbol. */ 1182 1183 inline static void 1184 frvfdpic_pic_merge_early_relocs_info (struct frvfdpic_relocs_info *e2, 1185 struct frvfdpic_relocs_info const *e1) 1186 { 1187 e2->got12 |= e1->got12; 1188 e2->gotlos |= e1->gotlos; 1189 e2->gothilo |= e1->gothilo; 1190 e2->fd |= e1->fd; 1191 e2->fdgot12 |= e1->fdgot12; 1192 e2->fdgotlos |= e1->fdgotlos; 1193 e2->fdgothilo |= e1->fdgothilo; 1194 e2->fdgoff12 |= e1->fdgoff12; 1195 e2->fdgofflos |= e1->fdgofflos; 1196 e2->fdgoffhilo |= e1->fdgoffhilo; 1197 e2->tlsplt |= e1->tlsplt; 1198 e2->tlsdesc12 |= e1->tlsdesc12; 1199 e2->tlsdesclos |= e1->tlsdesclos; 1200 e2->tlsdeschilo |= e1->tlsdeschilo; 1201 e2->tlsoff12 |= e1->tlsoff12; 1202 e2->tlsofflos |= e1->tlsofflos; 1203 e2->tlsoffhilo |= e1->tlsoffhilo; 1204 e2->gotoff |= e1->gotoff; 1205 e2->call |= e1->call; 1206 e2->sym |= e1->sym; 1207 } 1208 1209 /* Every block of 65535 lazy PLT entries shares a single call to the 1210 resolver, inserted in the 32768th lazy PLT entry (i.e., entry # 1211 32767, counting from 0). All other lazy PLT entries branch to it 1212 in a single instruction. */ 1213 1214 #define FRVFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) 8 * 65535 + 4) 1215 #define FRVFDPIC_LZPLT_RESOLV_LOC (8 * 32767) 1216 1217 /* Add a dynamic relocation to the SRELOC section. */ 1218 1219 inline static bfd_vma 1220 _frvfdpic_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset, 1221 int reloc_type, long dynindx, bfd_vma addend, 1222 struct frvfdpic_relocs_info *entry) 1223 { 1224 Elf_Internal_Rela outrel; 1225 bfd_vma reloc_offset; 1226 1227 outrel.r_offset = offset; 1228 outrel.r_info = ELF32_R_INFO (dynindx, reloc_type); 1229 outrel.r_addend = addend; 1230 1231 reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rel); 1232 BFD_ASSERT (reloc_offset < sreloc->size); 1233 bfd_elf32_swap_reloc_out (output_bfd, &outrel, 1234 sreloc->contents + reloc_offset); 1235 sreloc->reloc_count++; 1236 1237 /* If the entry's index is zero, this relocation was probably to a 1238 linkonce section that got discarded. We reserved a dynamic 1239 relocation, but it was for another entry than the one we got at 1240 the time of emitting the relocation. Unfortunately there's no 1241 simple way for us to catch this situation, since the relocation 1242 is cleared right before calling relocate_section, at which point 1243 we no longer know what the relocation used to point to. */ 1244 if (entry->symndx) 1245 { 1246 BFD_ASSERT (entry->dynrelocs > 0); 1247 entry->dynrelocs--; 1248 } 1249 1250 return reloc_offset; 1251 } 1252 1253 /* Add a fixup to the ROFIXUP section. */ 1254 1255 static bfd_vma 1256 _frvfdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma offset, 1257 struct frvfdpic_relocs_info *entry) 1258 { 1259 bfd_vma fixup_offset; 1260 1261 if (rofixup->flags & SEC_EXCLUDE) 1262 return -1; 1263 1264 fixup_offset = rofixup->reloc_count * 4; 1265 if (rofixup->contents) 1266 { 1267 BFD_ASSERT (fixup_offset < rofixup->size); 1268 bfd_put_32 (output_bfd, offset, rofixup->contents + fixup_offset); 1269 } 1270 rofixup->reloc_count++; 1271 1272 if (entry && entry->symndx) 1273 { 1274 /* See discussion about symndx == 0 in _frvfdpic_add_dyn_reloc 1275 above. */ 1276 BFD_ASSERT (entry->fixups > 0); 1277 entry->fixups--; 1278 } 1279 1280 return fixup_offset; 1281 } 1282 1283 /* Find the segment number in which OSEC, and output section, is 1284 located. */ 1285 1286 static unsigned 1287 _frvfdpic_osec_to_segment (bfd *output_bfd, asection *osec) 1288 { 1289 Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section (output_bfd, osec); 1290 1291 return (p != NULL) ? p - elf_tdata (output_bfd)->phdr : -1; 1292 } 1293 1294 inline static bfd_boolean 1295 _frvfdpic_osec_readonly_p (bfd *output_bfd, asection *osec) 1296 { 1297 unsigned seg = _frvfdpic_osec_to_segment (output_bfd, osec); 1298 1299 return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W); 1300 } 1301 1302 #define FRVFDPIC_TLS_BIAS (2048 - 16) 1303 1304 /* Return the base VMA address which should be subtracted from real addresses 1305 when resolving TLSMOFF relocation. 1306 This is PT_TLS segment p_vaddr, plus the 2048-16 bias. */ 1307 1308 static bfd_vma 1309 tls_biased_base (struct bfd_link_info *info) 1310 { 1311 /* If tls_sec is NULL, we should have signalled an error already. */ 1312 if (elf_hash_table (info)->tls_sec == NULL) 1313 return FRVFDPIC_TLS_BIAS; 1314 return elf_hash_table (info)->tls_sec->vma + FRVFDPIC_TLS_BIAS; 1315 } 1316 1317 /* Generate relocations for GOT entries, function descriptors, and 1318 code for PLT and lazy PLT entries. */ 1319 1320 inline static bfd_boolean 1321 _frvfdpic_emit_got_relocs_plt_entries (struct frvfdpic_relocs_info *entry, 1322 bfd *output_bfd, 1323 struct bfd_link_info *info, 1324 asection *sec, 1325 Elf_Internal_Sym *sym, 1326 bfd_vma addend) 1327 1328 { 1329 bfd_vma fd_lazy_rel_offset = (bfd_vma)-1; 1330 int dynindx = -1; 1331 1332 if (entry->done) 1333 return TRUE; 1334 entry->done = 1; 1335 1336 if (entry->got_entry || entry->fdgot_entry || entry->fd_entry 1337 || entry->tlsoff_entry || entry->tlsdesc_entry) 1338 { 1339 /* If the symbol is dynamic, consider it for dynamic 1340 relocations, otherwise decay to section + offset. */ 1341 if (entry->symndx == -1 && entry->d.h->dynindx != -1) 1342 dynindx = entry->d.h->dynindx; 1343 else 1344 { 1345 if (sec 1346 && sec->output_section 1347 && ! bfd_is_abs_section (sec->output_section) 1348 && ! bfd_is_und_section (sec->output_section)) 1349 dynindx = elf_section_data (sec->output_section)->dynindx; 1350 else 1351 dynindx = 0; 1352 } 1353 } 1354 1355 /* Generate relocation for GOT entry pointing to the symbol. */ 1356 if (entry->got_entry) 1357 { 1358 int idx = dynindx; 1359 bfd_vma ad = addend; 1360 1361 /* If the symbol is dynamic but binds locally, use 1362 section+offset. */ 1363 if (sec && (entry->symndx != -1 1364 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1365 { 1366 if (entry->symndx == -1) 1367 ad += entry->d.h->root.u.def.value; 1368 else 1369 ad += sym->st_value; 1370 ad += sec->output_offset; 1371 if (sec->output_section && elf_section_data (sec->output_section)) 1372 idx = elf_section_data (sec->output_section)->dynindx; 1373 else 1374 idx = 0; 1375 } 1376 1377 /* If we're linking an executable at a fixed address, we can 1378 omit the dynamic relocation as long as the symbol is local to 1379 this module. */ 1380 if (bfd_link_pde (info) 1381 && (entry->symndx != -1 1382 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1383 { 1384 if (sec) 1385 ad += sec->output_section->vma; 1386 if (entry->symndx != -1 1387 || entry->d.h->root.type != bfd_link_hash_undefweak) 1388 _frvfdpic_add_rofixup (output_bfd, 1389 frvfdpic_gotfixup_section (info), 1390 frvfdpic_got_section (info)->output_section 1391 ->vma 1392 + frvfdpic_got_section (info)->output_offset 1393 + frvfdpic_got_initial_offset (info) 1394 + entry->got_entry, entry); 1395 } 1396 else 1397 _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), 1398 _bfd_elf_section_offset 1399 (output_bfd, info, 1400 frvfdpic_got_section (info), 1401 frvfdpic_got_initial_offset (info) 1402 + entry->got_entry) 1403 + frvfdpic_got_section (info) 1404 ->output_section->vma 1405 + frvfdpic_got_section (info)->output_offset, 1406 R_FRV_32, idx, ad, entry); 1407 1408 bfd_put_32 (output_bfd, ad, 1409 frvfdpic_got_section (info)->contents 1410 + frvfdpic_got_initial_offset (info) 1411 + entry->got_entry); 1412 } 1413 1414 /* Generate relocation for GOT entry pointing to a canonical 1415 function descriptor. */ 1416 if (entry->fdgot_entry) 1417 { 1418 int reloc, idx; 1419 bfd_vma ad = 0; 1420 1421 if (! (entry->symndx == -1 1422 && entry->d.h->root.type == bfd_link_hash_undefweak 1423 && FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1424 { 1425 /* If the symbol is dynamic and there may be dynamic symbol 1426 resolution because we are, or are linked with, a shared 1427 library, emit a FUNCDESC relocation such that the dynamic 1428 linker will allocate the function descriptor. If the 1429 symbol needs a non-local function descriptor but binds 1430 locally (e.g., its visibility is protected, emit a 1431 dynamic relocation decayed to section+offset. */ 1432 if (entry->symndx == -1 1433 && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h) 1434 && FRVFDPIC_SYM_LOCAL (info, entry->d.h) 1435 && !bfd_link_pde (info)) 1436 { 1437 reloc = R_FRV_FUNCDESC; 1438 idx = elf_section_data (entry->d.h->root.u.def.section 1439 ->output_section)->dynindx; 1440 ad = entry->d.h->root.u.def.section->output_offset 1441 + entry->d.h->root.u.def.value; 1442 } 1443 else if (entry->symndx == -1 1444 && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h)) 1445 { 1446 reloc = R_FRV_FUNCDESC; 1447 idx = dynindx; 1448 ad = addend; 1449 if (ad) 1450 { 1451 (*info->callbacks->reloc_dangerous) 1452 (info, _("relocation requires zero addend"), 1453 elf_hash_table (info)->dynobj, 1454 frvfdpic_got_section (info), 1455 entry->fdgot_entry); 1456 return FALSE; 1457 } 1458 } 1459 else 1460 { 1461 /* Otherwise, we know we have a private function descriptor, 1462 so reference it directly. */ 1463 if (elf_hash_table (info)->dynamic_sections_created) 1464 BFD_ASSERT (entry->privfd); 1465 reloc = R_FRV_32; 1466 idx = elf_section_data (frvfdpic_got_section (info) 1467 ->output_section)->dynindx; 1468 ad = frvfdpic_got_section (info)->output_offset 1469 + frvfdpic_got_initial_offset (info) + entry->fd_entry; 1470 } 1471 1472 /* If there is room for dynamic symbol resolution, emit the 1473 dynamic relocation. However, if we're linking an 1474 executable at a fixed location, we won't have emitted a 1475 dynamic symbol entry for the got section, so idx will be 1476 zero, which means we can and should compute the address 1477 of the private descriptor ourselves. */ 1478 if (bfd_link_pde (info) 1479 && (entry->symndx != -1 1480 || FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h))) 1481 { 1482 ad += frvfdpic_got_section (info)->output_section->vma; 1483 _frvfdpic_add_rofixup (output_bfd, 1484 frvfdpic_gotfixup_section (info), 1485 frvfdpic_got_section (info) 1486 ->output_section->vma 1487 + frvfdpic_got_section (info) 1488 ->output_offset 1489 + frvfdpic_got_initial_offset (info) 1490 + entry->fdgot_entry, entry); 1491 } 1492 else 1493 _frvfdpic_add_dyn_reloc (output_bfd, 1494 frvfdpic_gotrel_section (info), 1495 _bfd_elf_section_offset 1496 (output_bfd, info, 1497 frvfdpic_got_section (info), 1498 frvfdpic_got_initial_offset (info) 1499 + entry->fdgot_entry) 1500 + frvfdpic_got_section (info) 1501 ->output_section->vma 1502 + frvfdpic_got_section (info) 1503 ->output_offset, 1504 reloc, idx, ad, entry); 1505 } 1506 1507 bfd_put_32 (output_bfd, ad, 1508 frvfdpic_got_section (info)->contents 1509 + frvfdpic_got_initial_offset (info) 1510 + entry->fdgot_entry); 1511 } 1512 1513 /* Generate relocation to fill in a private function descriptor in 1514 the GOT. */ 1515 if (entry->fd_entry) 1516 { 1517 int idx = dynindx; 1518 bfd_vma ad = addend; 1519 bfd_vma ofst; 1520 long lowword, highword; 1521 1522 /* If the symbol is dynamic but binds locally, use 1523 section+offset. */ 1524 if (sec && (entry->symndx != -1 1525 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1526 { 1527 if (entry->symndx == -1) 1528 ad += entry->d.h->root.u.def.value; 1529 else 1530 ad += sym->st_value; 1531 ad += sec->output_offset; 1532 if (sec->output_section && elf_section_data (sec->output_section)) 1533 idx = elf_section_data (sec->output_section)->dynindx; 1534 else 1535 idx = 0; 1536 } 1537 1538 /* If we're linking an executable at a fixed address, we can 1539 omit the dynamic relocation as long as the symbol is local to 1540 this module. */ 1541 if (bfd_link_pde (info) 1542 && (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1543 { 1544 if (sec) 1545 ad += sec->output_section->vma; 1546 ofst = 0; 1547 if (entry->symndx != -1 1548 || entry->d.h->root.type != bfd_link_hash_undefweak) 1549 { 1550 _frvfdpic_add_rofixup (output_bfd, 1551 frvfdpic_gotfixup_section (info), 1552 frvfdpic_got_section (info) 1553 ->output_section->vma 1554 + frvfdpic_got_section (info) 1555 ->output_offset 1556 + frvfdpic_got_initial_offset (info) 1557 + entry->fd_entry, entry); 1558 _frvfdpic_add_rofixup (output_bfd, 1559 frvfdpic_gotfixup_section (info), 1560 frvfdpic_got_section (info) 1561 ->output_section->vma 1562 + frvfdpic_got_section (info) 1563 ->output_offset 1564 + frvfdpic_got_initial_offset (info) 1565 + entry->fd_entry + 4, entry); 1566 } 1567 } 1568 else 1569 { 1570 ofst = 1571 _frvfdpic_add_dyn_reloc (output_bfd, 1572 entry->lazyplt 1573 ? frvfdpic_pltrel_section (info) 1574 : frvfdpic_gotrel_section (info), 1575 _bfd_elf_section_offset 1576 (output_bfd, info, 1577 frvfdpic_got_section (info), 1578 frvfdpic_got_initial_offset (info) 1579 + entry->fd_entry) 1580 + frvfdpic_got_section (info) 1581 ->output_section->vma 1582 + frvfdpic_got_section (info) 1583 ->output_offset, 1584 R_FRV_FUNCDESC_VALUE, idx, ad, entry); 1585 } 1586 1587 /* If we've omitted the dynamic relocation, just emit the fixed 1588 addresses of the symbol and of the local GOT base offset. */ 1589 if (bfd_link_pde (info) 1590 && sec 1591 && sec->output_section) 1592 { 1593 lowword = ad; 1594 highword = frvfdpic_got_section (info)->output_section->vma 1595 + frvfdpic_got_section (info)->output_offset 1596 + frvfdpic_got_initial_offset (info); 1597 } 1598 else if (entry->lazyplt) 1599 { 1600 if (ad) 1601 { 1602 (*info->callbacks->reloc_dangerous) 1603 (info, _("relocation requires zero addend"), 1604 elf_hash_table (info)->dynobj, 1605 frvfdpic_got_section (info), 1606 entry->fd_entry); 1607 return FALSE; 1608 } 1609 1610 fd_lazy_rel_offset = ofst; 1611 1612 /* A function descriptor used for lazy or local resolving is 1613 initialized such that its high word contains the output 1614 section index in which the PLT entries are located, and 1615 the low word contains the address of the lazy PLT entry 1616 entry point, that must be within the memory region 1617 assigned to that section. */ 1618 lowword = entry->lzplt_entry + 4 1619 + frvfdpic_plt_section (info)->output_offset 1620 + frvfdpic_plt_section (info)->output_section->vma; 1621 highword = _frvfdpic_osec_to_segment 1622 (output_bfd, frvfdpic_plt_section (info)->output_section); 1623 } 1624 else 1625 { 1626 /* A function descriptor for a local function gets the index 1627 of the section. For a non-local function, it's 1628 disregarded. */ 1629 lowword = ad; 1630 if (sec == NULL 1631 || (entry->symndx == -1 && entry->d.h->dynindx != -1 1632 && entry->d.h->dynindx == idx)) 1633 highword = 0; 1634 else 1635 highword = _frvfdpic_osec_to_segment 1636 (output_bfd, sec->output_section); 1637 } 1638 1639 bfd_put_32 (output_bfd, lowword, 1640 frvfdpic_got_section (info)->contents 1641 + frvfdpic_got_initial_offset (info) 1642 + entry->fd_entry); 1643 bfd_put_32 (output_bfd, highword, 1644 frvfdpic_got_section (info)->contents 1645 + frvfdpic_got_initial_offset (info) 1646 + entry->fd_entry + 4); 1647 } 1648 1649 /* Generate code for the PLT entry. */ 1650 if (entry->plt_entry != (bfd_vma) -1) 1651 { 1652 bfd_byte *plt_code = frvfdpic_plt_section (info)->contents 1653 + entry->plt_entry; 1654 1655 BFD_ASSERT (entry->fd_entry); 1656 1657 /* Figure out what kind of PLT entry we need, depending on the 1658 location of the function descriptor within the GOT. */ 1659 if (entry->fd_entry >= -(1 << (12 - 1)) 1660 && entry->fd_entry < (1 << (12 - 1))) 1661 { 1662 /* lddi @(gr15, fd_entry), gr14 */ 1663 bfd_put_32 (output_bfd, 1664 0x9cccf000 | (entry->fd_entry & ((1 << 12) - 1)), 1665 plt_code); 1666 plt_code += 4; 1667 } 1668 else 1669 { 1670 if (entry->fd_entry >= -(1 << (16 - 1)) 1671 && entry->fd_entry < (1 << (16 - 1))) 1672 { 1673 /* setlos lo(fd_entry), gr14 */ 1674 bfd_put_32 (output_bfd, 1675 0x9cfc0000 1676 | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)), 1677 plt_code); 1678 plt_code += 4; 1679 } 1680 else 1681 { 1682 /* sethi.p hi(fd_entry), gr14 1683 setlo lo(fd_entry), gr14 */ 1684 bfd_put_32 (output_bfd, 1685 0x1cf80000 1686 | ((entry->fd_entry >> 16) 1687 & (((bfd_vma)1 << 16) - 1)), 1688 plt_code); 1689 plt_code += 4; 1690 bfd_put_32 (output_bfd, 1691 0x9cf40000 1692 | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)), 1693 plt_code); 1694 plt_code += 4; 1695 } 1696 /* ldd @(gr14,gr15),gr14 */ 1697 bfd_put_32 (output_bfd, 0x9c08e14f, plt_code); 1698 plt_code += 4; 1699 } 1700 /* jmpl @(gr14,gr0) */ 1701 bfd_put_32 (output_bfd, 0x8030e000, plt_code); 1702 } 1703 1704 /* Generate code for the lazy PLT entry. */ 1705 if (entry->lzplt_entry != (bfd_vma) -1) 1706 { 1707 bfd_byte *lzplt_code = frvfdpic_plt_section (info)->contents 1708 + entry->lzplt_entry; 1709 bfd_vma resolverStub_addr; 1710 1711 bfd_put_32 (output_bfd, fd_lazy_rel_offset, lzplt_code); 1712 lzplt_code += 4; 1713 1714 resolverStub_addr = entry->lzplt_entry / FRVFDPIC_LZPLT_BLOCK_SIZE 1715 * FRVFDPIC_LZPLT_BLOCK_SIZE + FRVFDPIC_LZPLT_RESOLV_LOC; 1716 if (resolverStub_addr >= frvfdpic_plt_initial_offset (info)) 1717 resolverStub_addr = frvfdpic_plt_initial_offset (info) - 12; 1718 1719 if (entry->lzplt_entry == resolverStub_addr) 1720 { 1721 /* This is a lazy PLT entry that includes a resolver call. */ 1722 /* ldd @(gr15,gr0), gr4 1723 jmpl @(gr4,gr0) */ 1724 bfd_put_32 (output_bfd, 0x8808f140, lzplt_code); 1725 bfd_put_32 (output_bfd, 0x80304000, lzplt_code + 4); 1726 } 1727 else 1728 { 1729 /* bra resolverStub */ 1730 bfd_put_32 (output_bfd, 1731 0xc01a0000 1732 | (((resolverStub_addr - entry->lzplt_entry) 1733 / 4) & (((bfd_vma)1 << 16) - 1)), 1734 lzplt_code); 1735 } 1736 } 1737 1738 /* Generate relocation for GOT entry holding the TLS offset. */ 1739 if (entry->tlsoff_entry) 1740 { 1741 int idx = dynindx; 1742 bfd_vma ad = addend; 1743 1744 if (entry->symndx != -1 1745 || FRVFDPIC_SYM_LOCAL (info, entry->d.h)) 1746 { 1747 /* If the symbol is dynamic but binds locally, use 1748 section+offset. */ 1749 if (sec) 1750 { 1751 if (entry->symndx == -1) 1752 ad += entry->d.h->root.u.def.value; 1753 else 1754 ad += sym->st_value; 1755 ad += sec->output_offset; 1756 if (sec->output_section 1757 && elf_section_data (sec->output_section)) 1758 idx = elf_section_data (sec->output_section)->dynindx; 1759 else 1760 idx = 0; 1761 } 1762 } 1763 1764 /* *ABS*+addend is special for TLS relocations, use only the 1765 addend. */ 1766 if (bfd_link_executable (info) 1767 && idx == 0 1768 && (bfd_is_abs_section (sec) 1769 || bfd_is_und_section (sec))) 1770 ; 1771 /* If we're linking an executable, we can entirely omit the 1772 dynamic relocation if the symbol is local to this module. */ 1773 else if (bfd_link_executable (info) 1774 && (entry->symndx != -1 1775 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1776 { 1777 if (sec) 1778 ad += sec->output_section->vma - tls_biased_base (info); 1779 } 1780 else 1781 { 1782 if (idx == 0 1783 && (bfd_is_abs_section (sec) 1784 || bfd_is_und_section (sec))) 1785 { 1786 if (! elf_hash_table (info)->tls_sec) 1787 { 1788 (*info->callbacks->undefined_symbol) 1789 (info, "TLS section", elf_hash_table (info)->dynobj, 1790 frvfdpic_got_section (info), entry->tlsoff_entry, TRUE); 1791 return FALSE; 1792 } 1793 idx = elf_section_data (elf_hash_table (info)->tls_sec)->dynindx; 1794 ad += FRVFDPIC_TLS_BIAS; 1795 } 1796 _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), 1797 _bfd_elf_section_offset 1798 (output_bfd, info, 1799 frvfdpic_got_section (info), 1800 frvfdpic_got_initial_offset (info) 1801 + entry->tlsoff_entry) 1802 + frvfdpic_got_section (info) 1803 ->output_section->vma 1804 + frvfdpic_got_section (info) 1805 ->output_offset, 1806 R_FRV_TLSOFF, idx, ad, entry); 1807 } 1808 1809 bfd_put_32 (output_bfd, ad, 1810 frvfdpic_got_section (info)->contents 1811 + frvfdpic_got_initial_offset (info) 1812 + entry->tlsoff_entry); 1813 } 1814 1815 if (entry->tlsdesc_entry) 1816 { 1817 int idx = dynindx; 1818 bfd_vma ad = addend; 1819 1820 /* If the symbol is dynamic but binds locally, use 1821 section+offset. */ 1822 if (sec && (entry->symndx != -1 1823 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1824 { 1825 if (entry->symndx == -1) 1826 ad += entry->d.h->root.u.def.value; 1827 else 1828 ad += sym->st_value; 1829 ad += sec->output_offset; 1830 if (sec->output_section && elf_section_data (sec->output_section)) 1831 idx = elf_section_data (sec->output_section)->dynindx; 1832 else 1833 idx = 0; 1834 } 1835 1836 /* If we didn't set up a TLS offset entry, but we're linking an 1837 executable and the symbol binds locally, we can use the 1838 module offset in the TLS descriptor in relaxations. */ 1839 if (bfd_link_executable (info) && ! entry->tlsoff_entry) 1840 entry->tlsoff_entry = entry->tlsdesc_entry + 4; 1841 1842 if (bfd_link_pde (info) 1843 && ((idx == 0 1844 && (bfd_is_abs_section (sec) 1845 || bfd_is_und_section (sec))) 1846 || entry->symndx != -1 1847 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1848 { 1849 /* *ABS*+addend is special for TLS relocations, use only the 1850 addend for the TLS offset, and take the module id as 1851 0. */ 1852 if (idx == 0 1853 && (bfd_is_abs_section (sec) 1854 || bfd_is_und_section (sec))) 1855 ; 1856 /* For other TLS symbols that bind locally, add the section 1857 TLS offset to the addend. */ 1858 else if (sec) 1859 ad += sec->output_section->vma - tls_biased_base (info); 1860 1861 bfd_put_32 (output_bfd, 1862 frvfdpic_plt_section (info)->output_section->vma 1863 + frvfdpic_plt_section (info)->output_offset 1864 + frvfdpic_plt_tls_ret_offset (info), 1865 frvfdpic_got_section (info)->contents 1866 + frvfdpic_got_initial_offset (info) 1867 + entry->tlsdesc_entry); 1868 1869 _frvfdpic_add_rofixup (output_bfd, 1870 frvfdpic_gotfixup_section (info), 1871 frvfdpic_got_section (info) 1872 ->output_section->vma 1873 + frvfdpic_got_section (info) 1874 ->output_offset 1875 + frvfdpic_got_initial_offset (info) 1876 + entry->tlsdesc_entry, entry); 1877 1878 BFD_ASSERT (frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs); 1879 1880 /* We've used one of the reserved fixups, so discount it so 1881 that we can check at the end that we've used them 1882 all. */ 1883 frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs--; 1884 1885 /* While at that, make sure the ret instruction makes to the 1886 right location in the PLT. We could do it only when we 1887 got to 0, but since the check at the end will only print 1888 a warning, make sure we have the ret in place in case the 1889 warning is missed. */ 1890 bfd_put_32 (output_bfd, 0xc03a4000, 1891 frvfdpic_plt_section (info)->contents 1892 + frvfdpic_plt_tls_ret_offset (info)); 1893 } 1894 else 1895 { 1896 if (idx == 0 1897 && (bfd_is_abs_section (sec) 1898 || bfd_is_und_section (sec))) 1899 { 1900 if (! elf_hash_table (info)->tls_sec) 1901 { 1902 (*info->callbacks->undefined_symbol) 1903 (info, "TLS section", elf_hash_table (info)->dynobj, 1904 frvfdpic_got_section (info), entry->tlsdesc_entry, TRUE); 1905 return FALSE; 1906 } 1907 idx = elf_section_data (elf_hash_table (info)->tls_sec)->dynindx; 1908 ad += FRVFDPIC_TLS_BIAS; 1909 } 1910 1911 _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), 1912 _bfd_elf_section_offset 1913 (output_bfd, info, 1914 frvfdpic_got_section (info), 1915 frvfdpic_got_initial_offset (info) 1916 + entry->tlsdesc_entry) 1917 + frvfdpic_got_section (info) 1918 ->output_section->vma 1919 + frvfdpic_got_section (info) 1920 ->output_offset, 1921 R_FRV_TLSDESC_VALUE, idx, ad, entry); 1922 1923 bfd_put_32 (output_bfd, 0, 1924 frvfdpic_got_section (info)->contents 1925 + frvfdpic_got_initial_offset (info) 1926 + entry->tlsdesc_entry); 1927 } 1928 1929 bfd_put_32 (output_bfd, ad, 1930 frvfdpic_got_section (info)->contents 1931 + frvfdpic_got_initial_offset (info) 1932 + entry->tlsdesc_entry + 4); 1933 } 1934 1935 /* Generate code for the get-TLS-offset PLT entry. */ 1936 if (entry->tlsplt_entry != (bfd_vma) -1) 1937 { 1938 bfd_byte *plt_code = frvfdpic_plt_section (info)->contents 1939 + entry->tlsplt_entry; 1940 1941 if (bfd_link_executable (info) 1942 && (entry->symndx != -1 1943 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1944 { 1945 int idx = dynindx; 1946 bfd_vma ad = addend; 1947 1948 /* sec may be NULL when referencing an undefweak symbol 1949 while linking a static executable. */ 1950 if (!sec) 1951 { 1952 BFD_ASSERT (entry->symndx == -1 1953 && entry->d.h->root.type == bfd_link_hash_undefweak); 1954 } 1955 else 1956 { 1957 if (entry->symndx == -1) 1958 ad += entry->d.h->root.u.def.value; 1959 else 1960 ad += sym->st_value; 1961 ad += sec->output_offset; 1962 if (sec->output_section 1963 && elf_section_data (sec->output_section)) 1964 idx = elf_section_data (sec->output_section)->dynindx; 1965 else 1966 idx = 0; 1967 } 1968 1969 /* *ABS*+addend is special for TLS relocations, use only the 1970 addend for the TLS offset, and take the module id as 1971 0. */ 1972 if (idx == 0 1973 && (bfd_is_abs_section (sec) 1974 || bfd_is_und_section (sec))) 1975 ; 1976 /* For other TLS symbols that bind locally, add the section 1977 TLS offset to the addend. */ 1978 else if (sec) 1979 ad += sec->output_section->vma - tls_biased_base (info); 1980 1981 if ((bfd_signed_vma)ad >= -(1 << (16 - 1)) 1982 && (bfd_signed_vma)ad < (1 << (16 - 1))) 1983 { 1984 /* setlos lo(ad), gr9 */ 1985 bfd_put_32 (output_bfd, 1986 0x92fc0000 1987 | (ad 1988 & (((bfd_vma)1 << 16) - 1)), 1989 plt_code); 1990 plt_code += 4; 1991 } 1992 else 1993 { 1994 /* sethi.p hi(ad), gr9 1995 setlo lo(ad), gr9 */ 1996 bfd_put_32 (output_bfd, 1997 0x12f80000 1998 | ((ad >> 16) 1999 & (((bfd_vma)1 << 16) - 1)), 2000 plt_code); 2001 plt_code += 4; 2002 bfd_put_32 (output_bfd, 2003 0x92f40000 2004 | (ad 2005 & (((bfd_vma)1 << 16) - 1)), 2006 plt_code); 2007 plt_code += 4; 2008 } 2009 /* ret */ 2010 bfd_put_32 (output_bfd, 0xc03a4000, plt_code); 2011 } 2012 else if (entry->tlsoff_entry) 2013 { 2014 /* Figure out what kind of PLT entry we need, depending on the 2015 location of the TLS descriptor within the GOT. */ 2016 if (entry->tlsoff_entry >= -(1 << (12 - 1)) 2017 && entry->tlsoff_entry < (1 << (12 - 1))) 2018 { 2019 /* ldi @(gr15, tlsoff_entry), gr9 */ 2020 bfd_put_32 (output_bfd, 2021 0x92c8f000 | (entry->tlsoff_entry 2022 & ((1 << 12) - 1)), 2023 plt_code); 2024 plt_code += 4; 2025 } 2026 else 2027 { 2028 if (entry->tlsoff_entry >= -(1 << (16 - 1)) 2029 && entry->tlsoff_entry < (1 << (16 - 1))) 2030 { 2031 /* setlos lo(tlsoff_entry), gr8 */ 2032 bfd_put_32 (output_bfd, 2033 0x90fc0000 2034 | (entry->tlsoff_entry 2035 & (((bfd_vma)1 << 16) - 1)), 2036 plt_code); 2037 plt_code += 4; 2038 } 2039 else 2040 { 2041 /* sethi.p hi(tlsoff_entry), gr8 2042 setlo lo(tlsoff_entry), gr8 */ 2043 bfd_put_32 (output_bfd, 2044 0x10f80000 2045 | ((entry->tlsoff_entry >> 16) 2046 & (((bfd_vma)1 << 16) - 1)), 2047 plt_code); 2048 plt_code += 4; 2049 bfd_put_32 (output_bfd, 2050 0x90f40000 2051 | (entry->tlsoff_entry 2052 & (((bfd_vma)1 << 16) - 1)), 2053 plt_code); 2054 plt_code += 4; 2055 } 2056 /* ld @(gr15,gr8),gr9 */ 2057 bfd_put_32 (output_bfd, 0x9008f108, plt_code); 2058 plt_code += 4; 2059 } 2060 /* ret */ 2061 bfd_put_32 (output_bfd, 0xc03a4000, plt_code); 2062 } 2063 else 2064 { 2065 BFD_ASSERT (entry->tlsdesc_entry); 2066 2067 /* Figure out what kind of PLT entry we need, depending on the 2068 location of the TLS descriptor within the GOT. */ 2069 if (entry->tlsdesc_entry >= -(1 << (12 - 1)) 2070 && entry->tlsdesc_entry < (1 << (12 - 1))) 2071 { 2072 /* lddi @(gr15, tlsdesc_entry), gr8 */ 2073 bfd_put_32 (output_bfd, 2074 0x90ccf000 | (entry->tlsdesc_entry 2075 & ((1 << 12) - 1)), 2076 plt_code); 2077 plt_code += 4; 2078 } 2079 else 2080 { 2081 if (entry->tlsdesc_entry >= -(1 << (16 - 1)) 2082 && entry->tlsdesc_entry < (1 << (16 - 1))) 2083 { 2084 /* setlos lo(tlsdesc_entry), gr8 */ 2085 bfd_put_32 (output_bfd, 2086 0x90fc0000 2087 | (entry->tlsdesc_entry 2088 & (((bfd_vma)1 << 16) - 1)), 2089 plt_code); 2090 plt_code += 4; 2091 } 2092 else 2093 { 2094 /* sethi.p hi(tlsdesc_entry), gr8 2095 setlo lo(tlsdesc_entry), gr8 */ 2096 bfd_put_32 (output_bfd, 2097 0x10f80000 2098 | ((entry->tlsdesc_entry >> 16) 2099 & (((bfd_vma)1 << 16) - 1)), 2100 plt_code); 2101 plt_code += 4; 2102 bfd_put_32 (output_bfd, 2103 0x90f40000 2104 | (entry->tlsdesc_entry 2105 & (((bfd_vma)1 << 16) - 1)), 2106 plt_code); 2107 plt_code += 4; 2108 } 2109 /* ldd @(gr15,gr8),gr8 */ 2110 bfd_put_32 (output_bfd, 0x9008f148, plt_code); 2111 plt_code += 4; 2112 } 2113 /* jmpl @(gr8,gr0) */ 2114 bfd_put_32 (output_bfd, 0x80308000, plt_code); 2115 } 2116 } 2117 2118 return TRUE; 2119 } 2120 2121 /* Handle an FRV small data reloc. */ 2122 2123 static bfd_reloc_status_type 2124 elf32_frv_relocate_gprel12 (struct bfd_link_info *info, 2125 bfd *input_bfd, 2126 asection *input_section, 2127 Elf_Internal_Rela *relocation, 2128 bfd_byte *contents, 2129 bfd_vma value) 2130 { 2131 bfd_vma insn; 2132 bfd_vma gp; 2133 struct bfd_link_hash_entry *h; 2134 2135 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 2136 2137 gp = (h->u.def.value 2138 + h->u.def.section->output_section->vma 2139 + h->u.def.section->output_offset); 2140 2141 value -= input_section->output_section->vma; 2142 value -= (gp - input_section->output_section->vma); 2143 2144 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 2145 2146 value += relocation->r_addend; 2147 2148 if ((long) value > 0x7ff || (long) value < -0x800) 2149 return bfd_reloc_overflow; 2150 2151 bfd_put_32 (input_bfd, 2152 (insn & 0xfffff000) | (value & 0xfff), 2153 contents + relocation->r_offset); 2154 2155 return bfd_reloc_ok; 2156 } 2157 2158 /* Handle an FRV small data reloc. for the u12 field. */ 2159 2160 static bfd_reloc_status_type 2161 elf32_frv_relocate_gprelu12 (struct bfd_link_info *info, 2162 bfd *input_bfd, 2163 asection *input_section, 2164 Elf_Internal_Rela *relocation, 2165 bfd_byte *contents, 2166 bfd_vma value) 2167 { 2168 bfd_vma insn; 2169 bfd_vma gp; 2170 struct bfd_link_hash_entry *h; 2171 bfd_vma mask; 2172 2173 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 2174 2175 gp = (h->u.def.value 2176 + h->u.def.section->output_section->vma 2177 + h->u.def.section->output_offset); 2178 2179 value -= input_section->output_section->vma; 2180 value -= (gp - input_section->output_section->vma); 2181 2182 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 2183 2184 value += relocation->r_addend; 2185 2186 if ((long) value > 0x7ff || (long) value < -0x800) 2187 return bfd_reloc_overflow; 2188 2189 /* The high 6 bits go into bits 17-12. The low 6 bits go into bits 5-0. */ 2190 mask = 0x3f03f; 2191 insn = (insn & ~mask) | ((value & 0xfc0) << 12) | (value & 0x3f); 2192 2193 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); 2194 2195 return bfd_reloc_ok; 2196 } 2197 2198 /* Handle an FRV ELF HI16 reloc. */ 2199 2200 static bfd_reloc_status_type 2201 elf32_frv_relocate_hi16 (bfd *input_bfd, 2202 Elf_Internal_Rela *relhi, 2203 bfd_byte *contents, 2204 bfd_vma value) 2205 { 2206 bfd_vma insn; 2207 2208 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); 2209 2210 value += relhi->r_addend; 2211 value = ((value >> 16) & 0xffff); 2212 2213 insn = (insn & 0xffff0000) | value; 2214 2215 if ((long) value > 0xffff || (long) value < -0x10000) 2216 return bfd_reloc_overflow; 2217 2218 bfd_put_32 (input_bfd, insn, contents + relhi->r_offset); 2219 return bfd_reloc_ok; 2220 2221 } 2222 static bfd_reloc_status_type 2223 elf32_frv_relocate_lo16 (bfd *input_bfd, 2224 Elf_Internal_Rela *rello, 2225 bfd_byte *contents, 2226 bfd_vma value) 2227 { 2228 bfd_vma insn; 2229 2230 insn = bfd_get_32 (input_bfd, contents + rello->r_offset); 2231 2232 value += rello->r_addend; 2233 value = value & 0xffff; 2234 2235 insn = (insn & 0xffff0000) | value; 2236 2237 if ((long) value > 0xffff || (long) value < -0x10000) 2238 return bfd_reloc_overflow; 2239 2240 bfd_put_32 (input_bfd, insn, contents + rello->r_offset); 2241 return bfd_reloc_ok; 2242 } 2243 2244 /* Perform the relocation for the CALL label24 instruction. */ 2245 2246 static bfd_reloc_status_type 2247 elf32_frv_relocate_label24 (bfd *input_bfd, 2248 asection *input_section, 2249 Elf_Internal_Rela *rello, 2250 bfd_byte *contents, 2251 bfd_vma value) 2252 { 2253 bfd_vma insn; 2254 bfd_vma label6; 2255 bfd_vma label18; 2256 2257 /* The format for the call instruction is: 2258 2259 0 000000 0001111 000000000000000000 2260 label6 opcode label18 2261 2262 The branch calculation is: pc + (4*label24) 2263 where label24 is the concatenation of label6 and label18. */ 2264 2265 /* Grab the instruction. */ 2266 insn = bfd_get_32 (input_bfd, contents + rello->r_offset); 2267 2268 value -= input_section->output_section->vma + input_section->output_offset; 2269 value -= rello->r_offset; 2270 value += rello->r_addend; 2271 2272 value = value >> 2; 2273 2274 label6 = value & 0xfc0000; 2275 label6 = label6 << 7; 2276 2277 label18 = value & 0x3ffff; 2278 2279 insn = insn & 0x803c0000; 2280 insn = insn | label6; 2281 insn = insn | label18; 2282 2283 bfd_put_32 (input_bfd, insn, contents + rello->r_offset); 2284 2285 return bfd_reloc_ok; 2286 } 2287 2288 static bfd_reloc_status_type 2289 elf32_frv_relocate_gprelhi (struct bfd_link_info *info, 2290 bfd *input_bfd, 2291 asection *input_section, 2292 Elf_Internal_Rela *relocation, 2293 bfd_byte *contents, 2294 bfd_vma value) 2295 { 2296 bfd_vma insn; 2297 bfd_vma gp; 2298 struct bfd_link_hash_entry *h; 2299 2300 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 2301 2302 gp = (h->u.def.value 2303 + h->u.def.section->output_section->vma 2304 + h->u.def.section->output_offset); 2305 2306 value -= input_section->output_section->vma; 2307 value -= (gp - input_section->output_section->vma); 2308 value += relocation->r_addend; 2309 value = ((value >> 16) & 0xffff); 2310 2311 if ((long) value > 0xffff || (long) value < -0x10000) 2312 return bfd_reloc_overflow; 2313 2314 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 2315 insn = (insn & 0xffff0000) | value; 2316 2317 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); 2318 return bfd_reloc_ok; 2319 } 2320 2321 static bfd_reloc_status_type 2322 elf32_frv_relocate_gprello (struct bfd_link_info *info, 2323 bfd *input_bfd, 2324 asection *input_section, 2325 Elf_Internal_Rela *relocation, 2326 bfd_byte *contents, 2327 bfd_vma value) 2328 { 2329 bfd_vma insn; 2330 bfd_vma gp; 2331 struct bfd_link_hash_entry *h; 2332 2333 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 2334 2335 gp = (h->u.def.value 2336 + h->u.def.section->output_section->vma 2337 + h->u.def.section->output_offset); 2338 2339 value -= input_section->output_section->vma; 2340 value -= (gp - input_section->output_section->vma); 2341 value += relocation->r_addend; 2342 value = value & 0xffff; 2343 2344 if ((long) value > 0xffff || (long) value < -0x10000) 2345 return bfd_reloc_overflow; 2346 2347 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 2348 insn = (insn & 0xffff0000) | value; 2349 2350 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); 2351 2352 return bfd_reloc_ok; 2353 } 2354 2355 static reloc_howto_type * 2356 frv_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, 2357 bfd_reloc_code_real_type code) 2358 { 2359 switch (code) 2360 { 2361 default: 2362 break; 2363 2364 case BFD_RELOC_NONE: 2365 return &elf32_frv_howto_table[ (int) R_FRV_NONE]; 2366 2367 case BFD_RELOC_32: 2368 if (elf_elfheader (abfd)->e_type == ET_EXEC 2369 || elf_elfheader (abfd)->e_type == ET_DYN) 2370 return &elf32_frv_rel_32_howto; 2371 /* Fall through. */ 2372 case BFD_RELOC_CTOR: 2373 return &elf32_frv_howto_table[ (int) R_FRV_32]; 2374 2375 case BFD_RELOC_FRV_LABEL16: 2376 return &elf32_frv_howto_table[ (int) R_FRV_LABEL16]; 2377 2378 case BFD_RELOC_FRV_LABEL24: 2379 return &elf32_frv_howto_table[ (int) R_FRV_LABEL24]; 2380 2381 case BFD_RELOC_FRV_LO16: 2382 return &elf32_frv_howto_table[ (int) R_FRV_LO16]; 2383 2384 case BFD_RELOC_FRV_HI16: 2385 return &elf32_frv_howto_table[ (int) R_FRV_HI16]; 2386 2387 case BFD_RELOC_FRV_GPREL12: 2388 return &elf32_frv_howto_table[ (int) R_FRV_GPREL12]; 2389 2390 case BFD_RELOC_FRV_GPRELU12: 2391 return &elf32_frv_howto_table[ (int) R_FRV_GPRELU12]; 2392 2393 case BFD_RELOC_FRV_GPREL32: 2394 return &elf32_frv_howto_table[ (int) R_FRV_GPREL32]; 2395 2396 case BFD_RELOC_FRV_GPRELHI: 2397 return &elf32_frv_howto_table[ (int) R_FRV_GPRELHI]; 2398 2399 case BFD_RELOC_FRV_GPRELLO: 2400 return &elf32_frv_howto_table[ (int) R_FRV_GPRELLO]; 2401 2402 case BFD_RELOC_FRV_GOT12: 2403 return &elf32_frv_howto_table[ (int) R_FRV_GOT12]; 2404 2405 case BFD_RELOC_FRV_GOTHI: 2406 return &elf32_frv_howto_table[ (int) R_FRV_GOTHI]; 2407 2408 case BFD_RELOC_FRV_GOTLO: 2409 return &elf32_frv_howto_table[ (int) R_FRV_GOTLO]; 2410 2411 case BFD_RELOC_FRV_FUNCDESC: 2412 if (elf_elfheader (abfd)->e_type == ET_EXEC 2413 || elf_elfheader (abfd)->e_type == ET_DYN) 2414 return &elf32_frv_rel_funcdesc_howto; 2415 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC]; 2416 2417 case BFD_RELOC_FRV_FUNCDESC_GOT12: 2418 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOT12]; 2419 2420 case BFD_RELOC_FRV_FUNCDESC_GOTHI: 2421 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTHI]; 2422 2423 case BFD_RELOC_FRV_FUNCDESC_GOTLO: 2424 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTLO]; 2425 2426 case BFD_RELOC_FRV_FUNCDESC_VALUE: 2427 if (elf_elfheader (abfd)->e_type == ET_EXEC 2428 || elf_elfheader (abfd)->e_type == ET_DYN) 2429 return &elf32_frv_rel_funcdesc_value_howto; 2430 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_VALUE]; 2431 2432 case BFD_RELOC_FRV_FUNCDESC_GOTOFF12: 2433 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFF12]; 2434 2435 case BFD_RELOC_FRV_FUNCDESC_GOTOFFHI: 2436 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFHI]; 2437 2438 case BFD_RELOC_FRV_FUNCDESC_GOTOFFLO: 2439 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFLO]; 2440 2441 case BFD_RELOC_FRV_GOTOFF12: 2442 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFF12]; 2443 2444 case BFD_RELOC_FRV_GOTOFFHI: 2445 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFHI]; 2446 2447 case BFD_RELOC_FRV_GOTOFFLO: 2448 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFLO]; 2449 2450 case BFD_RELOC_FRV_GETTLSOFF: 2451 return &elf32_frv_howto_table[ (int) R_FRV_GETTLSOFF]; 2452 2453 case BFD_RELOC_FRV_TLSDESC_VALUE: 2454 if (elf_elfheader (abfd)->e_type == ET_EXEC 2455 || elf_elfheader (abfd)->e_type == ET_DYN) 2456 return &elf32_frv_rel_tlsdesc_value_howto; 2457 return &elf32_frv_howto_table[ (int) R_FRV_TLSDESC_VALUE]; 2458 2459 case BFD_RELOC_FRV_GOTTLSDESC12: 2460 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESC12]; 2461 2462 case BFD_RELOC_FRV_GOTTLSDESCHI: 2463 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESCHI]; 2464 2465 case BFD_RELOC_FRV_GOTTLSDESCLO: 2466 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESCLO]; 2467 2468 case BFD_RELOC_FRV_TLSMOFF12: 2469 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFF12]; 2470 2471 case BFD_RELOC_FRV_TLSMOFFHI: 2472 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFFHI]; 2473 2474 case BFD_RELOC_FRV_TLSMOFFLO: 2475 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFFLO]; 2476 2477 case BFD_RELOC_FRV_GOTTLSOFF12: 2478 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFF12]; 2479 2480 case BFD_RELOC_FRV_GOTTLSOFFHI: 2481 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFFHI]; 2482 2483 case BFD_RELOC_FRV_GOTTLSOFFLO: 2484 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFFLO]; 2485 2486 case BFD_RELOC_FRV_TLSOFF: 2487 if (elf_elfheader (abfd)->e_type == ET_EXEC 2488 || elf_elfheader (abfd)->e_type == ET_DYN) 2489 return &elf32_frv_rel_tlsoff_howto; 2490 return &elf32_frv_howto_table[ (int) R_FRV_TLSOFF]; 2491 2492 case BFD_RELOC_FRV_TLSDESC_RELAX: 2493 return &elf32_frv_howto_table[ (int) R_FRV_TLSDESC_RELAX]; 2494 2495 case BFD_RELOC_FRV_GETTLSOFF_RELAX: 2496 return &elf32_frv_howto_table[ (int) R_FRV_GETTLSOFF_RELAX]; 2497 2498 case BFD_RELOC_FRV_TLSOFF_RELAX: 2499 return &elf32_frv_howto_table[ (int) R_FRV_TLSOFF_RELAX]; 2500 2501 case BFD_RELOC_FRV_TLSMOFF: 2502 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFF]; 2503 2504 case BFD_RELOC_VTABLE_INHERIT: 2505 return &elf32_frv_vtinherit_howto; 2506 2507 case BFD_RELOC_VTABLE_ENTRY: 2508 return &elf32_frv_vtentry_howto; 2509 } 2510 2511 return NULL; 2512 } 2513 2514 static reloc_howto_type * 2515 frv_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) 2516 { 2517 unsigned int i; 2518 2519 for (i = 0; 2520 i < sizeof (elf32_frv_howto_table) / sizeof (elf32_frv_howto_table[0]); 2521 i++) 2522 if (elf32_frv_howto_table[i].name != NULL 2523 && strcasecmp (elf32_frv_howto_table[i].name, r_name) == 0) 2524 return &elf32_frv_howto_table[i]; 2525 2526 if (strcasecmp (elf32_frv_vtinherit_howto.name, r_name) == 0) 2527 return &elf32_frv_vtinherit_howto; 2528 if (strcasecmp (elf32_frv_vtentry_howto.name, r_name) == 0) 2529 return &elf32_frv_vtentry_howto; 2530 2531 return NULL; 2532 } 2533 2534 /* Set the howto pointer for an FRV ELF reloc. */ 2535 2536 static bfd_boolean 2537 frv_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, 2538 arelent *cache_ptr, 2539 Elf_Internal_Rela *dst) 2540 { 2541 unsigned int r_type; 2542 2543 r_type = ELF32_R_TYPE (dst->r_info); 2544 switch (r_type) 2545 { 2546 case R_FRV_GNU_VTINHERIT: 2547 cache_ptr->howto = &elf32_frv_vtinherit_howto; 2548 break; 2549 2550 case R_FRV_GNU_VTENTRY: 2551 cache_ptr->howto = &elf32_frv_vtentry_howto; 2552 break; 2553 2554 default: 2555 if (r_type >= ARRAY_SIZE (elf32_frv_howto_table)) 2556 { 2557 /* xgettext:c-format */ 2558 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), 2559 abfd, r_type); 2560 bfd_set_error (bfd_error_bad_value); 2561 return FALSE; 2562 } 2563 cache_ptr->howto = & elf32_frv_howto_table [r_type]; 2564 break; 2565 } 2566 return TRUE; 2567 } 2568 2569 /* Set the howto pointer for an FRV ELF REL reloc. */ 2570 2571 static bfd_boolean 2572 frvfdpic_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, 2573 arelent *cache_ptr, Elf_Internal_Rela *dst) 2574 { 2575 unsigned int r_type; 2576 2577 r_type = ELF32_R_TYPE (dst->r_info); 2578 switch (r_type) 2579 { 2580 case R_FRV_32: 2581 cache_ptr->howto = &elf32_frv_rel_32_howto; 2582 break; 2583 2584 case R_FRV_FUNCDESC: 2585 cache_ptr->howto = &elf32_frv_rel_funcdesc_howto; 2586 break; 2587 2588 case R_FRV_FUNCDESC_VALUE: 2589 cache_ptr->howto = &elf32_frv_rel_funcdesc_value_howto; 2590 break; 2591 2592 case R_FRV_TLSDESC_VALUE: 2593 cache_ptr->howto = &elf32_frv_rel_tlsdesc_value_howto; 2594 break; 2595 2596 case R_FRV_TLSOFF: 2597 cache_ptr->howto = &elf32_frv_rel_tlsoff_howto; 2598 break; 2599 2600 default: 2601 cache_ptr->howto = NULL; 2602 return FALSE; 2603 } 2604 return TRUE; 2605 } 2606 2607 /* Perform a single relocation. By default we use the standard BFD 2608 routines, but a few relocs, we have to do them ourselves. */ 2609 2610 static bfd_reloc_status_type 2611 frv_final_link_relocate (reloc_howto_type *howto, 2612 bfd *input_bfd, 2613 asection *input_section, 2614 bfd_byte *contents, 2615 Elf_Internal_Rela *rel, 2616 bfd_vma relocation) 2617 { 2618 return _bfd_final_link_relocate (howto, input_bfd, input_section, 2619 contents, rel->r_offset, relocation, 2620 rel->r_addend); 2621 } 2622 2623 2624 /* Relocate an FRV ELF section. 2625 2626 The RELOCATE_SECTION function is called by the new ELF backend linker 2627 to handle the relocations for a section. 2628 2629 The relocs are always passed as Rela structures; if the section 2630 actually uses Rel structures, the r_addend field will always be 2631 zero. 2632 2633 This function is responsible for adjusting the section contents as 2634 necessary, and (if using Rela relocs and generating a relocatable 2635 output file) adjusting the reloc addend as necessary. 2636 2637 This function does not have to worry about setting the reloc 2638 address or the reloc symbol index. 2639 2640 LOCAL_SYMS is a pointer to the swapped in local symbols. 2641 2642 LOCAL_SECTIONS is an array giving the section in the input file 2643 corresponding to the st_shndx field of each local symbol. 2644 2645 The global hash table entry for the global symbols can be found 2646 via elf_sym_hashes (input_bfd). 2647 2648 When generating relocatable output, this function must handle 2649 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 2650 going to be the section symbol corresponding to the output 2651 section, which means that the addend must be adjusted 2652 accordingly. */ 2653 2654 static bfd_boolean 2655 elf32_frv_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, 2656 struct bfd_link_info *info, 2657 bfd *input_bfd, 2658 asection *input_section, 2659 bfd_byte *contents, 2660 Elf_Internal_Rela *relocs, 2661 Elf_Internal_Sym *local_syms, 2662 asection **local_sections) 2663 { 2664 Elf_Internal_Shdr *symtab_hdr; 2665 struct elf_link_hash_entry **sym_hashes; 2666 Elf_Internal_Rela *rel; 2667 Elf_Internal_Rela *relend; 2668 unsigned isec_segment, got_segment, plt_segment, gprel_segment, tls_segment, 2669 check_segment[2]; 2670 int silence_segment_error = !bfd_link_pic (info); 2671 unsigned long insn; 2672 2673 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; 2674 sym_hashes = elf_sym_hashes (input_bfd); 2675 relend = relocs + input_section->reloc_count; 2676 2677 isec_segment = _frvfdpic_osec_to_segment (output_bfd, 2678 input_section->output_section); 2679 if (IS_FDPIC (output_bfd) && frvfdpic_got_section (info)) 2680 got_segment = _frvfdpic_osec_to_segment (output_bfd, 2681 frvfdpic_got_section (info) 2682 ->output_section); 2683 else 2684 got_segment = -1; 2685 if (IS_FDPIC (output_bfd) && frvfdpic_gotfixup_section (info)) 2686 gprel_segment = _frvfdpic_osec_to_segment (output_bfd, 2687 frvfdpic_gotfixup_section (info) 2688 ->output_section); 2689 else 2690 gprel_segment = -1; 2691 if (IS_FDPIC (output_bfd) && frvfdpic_plt_section (info)) 2692 plt_segment = _frvfdpic_osec_to_segment (output_bfd, 2693 frvfdpic_plt_section (info) 2694 ->output_section); 2695 else 2696 plt_segment = -1; 2697 if (elf_hash_table (info)->tls_sec) 2698 tls_segment = _frvfdpic_osec_to_segment (output_bfd, 2699 elf_hash_table (info)->tls_sec); 2700 else 2701 tls_segment = -1; 2702 2703 for (rel = relocs; rel < relend; rel ++) 2704 { 2705 reloc_howto_type *howto; 2706 unsigned long r_symndx; 2707 Elf_Internal_Sym *sym; 2708 asection *sec; 2709 struct elf_link_hash_entry *h; 2710 bfd_vma relocation; 2711 bfd_reloc_status_type r; 2712 const char *name; 2713 int r_type; 2714 asection *osec; 2715 struct frvfdpic_relocs_info *picrel; 2716 bfd_vma orig_addend = rel->r_addend; 2717 2718 r_type = ELF32_R_TYPE (rel->r_info); 2719 2720 if ( r_type == R_FRV_GNU_VTINHERIT 2721 || r_type == R_FRV_GNU_VTENTRY) 2722 continue; 2723 2724 r_symndx = ELF32_R_SYM (rel->r_info); 2725 howto = elf32_frv_howto_table + ELF32_R_TYPE (rel->r_info); 2726 h = NULL; 2727 sym = NULL; 2728 sec = NULL; 2729 2730 if (r_symndx < symtab_hdr->sh_info) 2731 { 2732 sym = local_syms + r_symndx; 2733 osec = sec = local_sections [r_symndx]; 2734 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2735 2736 name = bfd_elf_string_from_elf_section 2737 (input_bfd, symtab_hdr->sh_link, sym->st_name); 2738 if (name == NULL || name[0] == 0) 2739 name = bfd_section_name (input_bfd, sec); 2740 } 2741 else 2742 { 2743 bfd_boolean warned, ignored; 2744 bfd_boolean unresolved_reloc; 2745 2746 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 2747 r_symndx, symtab_hdr, sym_hashes, 2748 h, sec, relocation, 2749 unresolved_reloc, warned, ignored); 2750 osec = sec; 2751 name = h->root.root.string; 2752 } 2753 2754 if (sec != NULL && discarded_section (sec)) 2755 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 2756 rel, 1, relend, howto, 0, contents); 2757 2758 if (bfd_link_relocatable (info)) 2759 continue; 2760 2761 if (r_type != R_FRV_TLSMOFF 2762 && h != NULL 2763 && (h->root.type == bfd_link_hash_defined 2764 || h->root.type == bfd_link_hash_defweak) 2765 && !FRVFDPIC_SYM_LOCAL (info, h)) 2766 { 2767 osec = sec = NULL; 2768 relocation = 0; 2769 } 2770 2771 switch (r_type) 2772 { 2773 case R_FRV_LABEL24: 2774 case R_FRV_32: 2775 if (! IS_FDPIC (output_bfd)) 2776 goto non_fdpic; 2777 /* Fall through. */ 2778 2779 case R_FRV_GOT12: 2780 case R_FRV_GOTHI: 2781 case R_FRV_GOTLO: 2782 case R_FRV_FUNCDESC_GOT12: 2783 case R_FRV_FUNCDESC_GOTHI: 2784 case R_FRV_FUNCDESC_GOTLO: 2785 case R_FRV_GOTOFF12: 2786 case R_FRV_GOTOFFHI: 2787 case R_FRV_GOTOFFLO: 2788 case R_FRV_FUNCDESC_GOTOFF12: 2789 case R_FRV_FUNCDESC_GOTOFFHI: 2790 case R_FRV_FUNCDESC_GOTOFFLO: 2791 case R_FRV_FUNCDESC: 2792 case R_FRV_FUNCDESC_VALUE: 2793 case R_FRV_GETTLSOFF: 2794 case R_FRV_TLSDESC_VALUE: 2795 case R_FRV_GOTTLSDESC12: 2796 case R_FRV_GOTTLSDESCHI: 2797 case R_FRV_GOTTLSDESCLO: 2798 case R_FRV_TLSMOFF12: 2799 case R_FRV_TLSMOFFHI: 2800 case R_FRV_TLSMOFFLO: 2801 case R_FRV_GOTTLSOFF12: 2802 case R_FRV_GOTTLSOFFHI: 2803 case R_FRV_GOTTLSOFFLO: 2804 case R_FRV_TLSOFF: 2805 case R_FRV_TLSDESC_RELAX: 2806 case R_FRV_GETTLSOFF_RELAX: 2807 case R_FRV_TLSOFF_RELAX: 2808 case R_FRV_TLSMOFF: 2809 if (h != NULL) 2810 picrel = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info 2811 (info), input_bfd, h, 2812 orig_addend, INSERT); 2813 else 2814 /* In order to find the entry we created before, we must 2815 use the original addend, not the one that may have been 2816 modified by _bfd_elf_rela_local_sym(). */ 2817 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info 2818 (info), input_bfd, r_symndx, 2819 orig_addend, INSERT); 2820 if (! picrel) 2821 return FALSE; 2822 2823 if (!_frvfdpic_emit_got_relocs_plt_entries (picrel, output_bfd, info, 2824 osec, sym, 2825 rel->r_addend)) 2826 { 2827 info->callbacks->einfo 2828 /* xgettext:c-format */ 2829 (_("%H: relocation to `%s+%v'" 2830 " may have caused the error above\n"), 2831 input_bfd, input_section, rel->r_offset, name, rel->r_addend); 2832 return FALSE; 2833 } 2834 2835 break; 2836 2837 default: 2838 non_fdpic: 2839 picrel = NULL; 2840 if (h 2841 && ! FRVFDPIC_SYM_LOCAL (info, h) 2842 && _bfd_elf_section_offset (output_bfd, info, input_section, 2843 rel->r_offset) != (bfd_vma) -1) 2844 { 2845 info->callbacks->einfo 2846 (_("%H: relocation references symbol" 2847 " not defined in the module\n"), 2848 input_bfd, input_section, rel->r_offset); 2849 return FALSE; 2850 } 2851 break; 2852 } 2853 2854 switch (r_type) 2855 { 2856 case R_FRV_GETTLSOFF: 2857 case R_FRV_TLSDESC_VALUE: 2858 case R_FRV_GOTTLSDESC12: 2859 case R_FRV_GOTTLSDESCHI: 2860 case R_FRV_GOTTLSDESCLO: 2861 case R_FRV_TLSMOFF12: 2862 case R_FRV_TLSMOFFHI: 2863 case R_FRV_TLSMOFFLO: 2864 case R_FRV_GOTTLSOFF12: 2865 case R_FRV_GOTTLSOFFHI: 2866 case R_FRV_GOTTLSOFFLO: 2867 case R_FRV_TLSOFF: 2868 case R_FRV_TLSDESC_RELAX: 2869 case R_FRV_GETTLSOFF_RELAX: 2870 case R_FRV_TLSOFF_RELAX: 2871 case R_FRV_TLSMOFF: 2872 if (sec && (bfd_is_abs_section (sec) || bfd_is_und_section (sec))) 2873 relocation += tls_biased_base (info); 2874 break; 2875 2876 default: 2877 break; 2878 } 2879 2880 /* Try to apply TLS relaxations. */ 2881 if (1) 2882 switch (r_type) 2883 { 2884 2885 #define LOCAL_EXEC_P(info, picrel) \ 2886 (bfd_link_executable (info) \ 2887 && (picrel->symndx != -1 || FRVFDPIC_SYM_LOCAL ((info), (picrel)->d.h))) 2888 #define INITIAL_EXEC_P(info, picrel) \ 2889 ((bfd_link_executable (info)|| (info)->flags & DF_STATIC_TLS) \ 2890 && (picrel)->tlsoff_entry) 2891 2892 #define IN_RANGE_FOR_OFST12_P(value) \ 2893 ((bfd_vma)((value) + 2048) < (bfd_vma)4096) 2894 #define IN_RANGE_FOR_SETLOS_P(value) \ 2895 ((bfd_vma)((value) + 32768) < (bfd_vma)65536) 2896 #define TLSMOFF_IN_RANGE_FOR_SETLOS_P(value, info) \ 2897 (IN_RANGE_FOR_SETLOS_P ((value) - tls_biased_base (info))) 2898 2899 #define RELAX_GETTLSOFF_LOCAL_EXEC_P(info, picrel, value) \ 2900 (LOCAL_EXEC_P ((info), (picrel)) \ 2901 && TLSMOFF_IN_RANGE_FOR_SETLOS_P((value), (info))) 2902 #define RELAX_GETTLSOFF_INITIAL_EXEC_P(info, picrel) \ 2903 (INITIAL_EXEC_P ((info), (picrel)) \ 2904 && IN_RANGE_FOR_OFST12_P ((picrel)->tlsoff_entry)) 2905 2906 #define RELAX_TLSDESC_LOCAL_EXEC_P(info, picrel, value) \ 2907 (LOCAL_EXEC_P ((info), (picrel))) 2908 #define RELAX_TLSDESC_INITIAL_EXEC_P(info, picrel) \ 2909 (INITIAL_EXEC_P ((info), (picrel))) 2910 2911 #define RELAX_GOTTLSOFF_LOCAL_EXEC_P(info, picrel, value) \ 2912 (LOCAL_EXEC_P ((info), (picrel)) \ 2913 && TLSMOFF_IN_RANGE_FOR_SETLOS_P((value), (info))) 2914 2915 case R_FRV_GETTLSOFF: 2916 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 2917 2918 /* Is this a call instruction? */ 2919 if ((insn & (unsigned long)0x01fc0000) != 0x003c0000) 2920 { 2921 info->callbacks->einfo 2922 (_("%H: R_FRV_GETTLSOFF not applied to a call instruction\n"), 2923 input_bfd, input_section, rel->r_offset); 2924 return FALSE; 2925 } 2926 2927 if (RELAX_GETTLSOFF_LOCAL_EXEC_P (info, picrel, 2928 relocation + rel->r_addend)) 2929 { 2930 /* Replace the call instruction (except the packing bit) 2931 with setlos #tlsmofflo(symbol+offset), gr9. */ 2932 insn &= (unsigned long)0x80000000; 2933 insn |= (unsigned long)0x12fc0000; 2934 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 2935 2936 r_type = R_FRV_TLSMOFFLO; 2937 howto = elf32_frv_howto_table + r_type; 2938 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 2939 } 2940 2941 else if (RELAX_GETTLSOFF_INITIAL_EXEC_P (info, picrel)) 2942 { 2943 /* Replace the call instruction (except the packing bit) 2944 with ldi @(gr15, #gottlsoff12(symbol+addend)), gr9. */ 2945 insn &= (unsigned long)0x80000000; 2946 insn |= (unsigned long)0x12c8f000; 2947 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 2948 2949 r_type = R_FRV_GOTTLSOFF12; 2950 howto = elf32_frv_howto_table + r_type; 2951 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 2952 } 2953 2954 break; 2955 2956 case R_FRV_GOTTLSDESC12: 2957 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 2958 2959 /* Is this an lddi instruction? */ 2960 if ((insn & (unsigned long)0x01fc0000) != 0x00cc0000) 2961 { 2962 info->callbacks->einfo 2963 (_("%H: R_FRV_GOTTLSDESC12" 2964 " not applied to an lddi instruction\n"), 2965 input_bfd, input_section, rel->r_offset); 2966 return FALSE; 2967 } 2968 2969 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 2970 relocation + rel->r_addend) 2971 && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 2972 info)) 2973 { 2974 /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC 2975 with setlos #tlsmofflo(symbol+offset), gr<C+1>. 2976 Preserve the packing bit. */ 2977 insn = (insn & (unsigned long)0x80000000) 2978 | ((insn + (unsigned long)0x02000000) 2979 & (unsigned long)0x7e000000); 2980 insn |= (unsigned long)0x00fc0000; 2981 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 2982 2983 r_type = R_FRV_TLSMOFFLO; 2984 howto = elf32_frv_howto_table + r_type; 2985 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 2986 } 2987 2988 else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 2989 relocation + rel->r_addend)) 2990 { 2991 /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC 2992 with sethi #tlsmoffhi(symbol+offset), gr<C+1>. 2993 Preserve the packing bit. */ 2994 insn = (insn & (unsigned long)0x80000000) 2995 | ((insn + (unsigned long)0x02000000) 2996 & (unsigned long)0x7e000000); 2997 insn |= (unsigned long)0x00f80000; 2998 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 2999 3000 r_type = R_FRV_TLSMOFFHI; 3001 howto = elf32_frv_howto_table + r_type; 3002 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3003 } 3004 3005 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3006 { 3007 /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC 3008 with ldi @(grB, #gottlsoff12(symbol+offset), 3009 gr<C+1>. Preserve the packing bit. If gottlsoff12 3010 overflows, we'll error out, but that's sort-of ok, 3011 since we'd started with gottlsdesc12, that's actually 3012 more demanding. Compiling with -fPIE instead of 3013 -fpie would fix it; linking with --relax should fix 3014 it as well. */ 3015 insn = (insn & (unsigned long)0x80cbf000) 3016 | ((insn + (unsigned long)0x02000000) 3017 & (unsigned long)0x7e000000); 3018 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3019 3020 r_type = R_FRV_GOTTLSOFF12; 3021 howto = elf32_frv_howto_table + r_type; 3022 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3023 } 3024 3025 break; 3026 3027 case R_FRV_GOTTLSDESCHI: 3028 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3029 3030 /* Is this a sethi instruction? */ 3031 if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) 3032 { 3033 info->callbacks->einfo 3034 (_("%H: R_FRV_GOTTLSDESCHI" 3035 " not applied to a sethi instruction\n"), 3036 input_bfd, input_section, rel->r_offset); 3037 return FALSE; 3038 } 3039 3040 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3041 relocation + rel->r_addend) 3042 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3043 && IN_RANGE_FOR_SETLOS_P (picrel->tlsoff_entry))) 3044 { 3045 /* Replace sethi with a nop. Preserve the packing bit. */ 3046 insn &= (unsigned long)0x80000000; 3047 insn |= (unsigned long)0x00880000; 3048 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3049 3050 /* Nothing to relocate. */ 3051 continue; 3052 } 3053 3054 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3055 { 3056 /* Simply decay GOTTLSDESC to GOTTLSOFF. */ 3057 r_type = R_FRV_GOTTLSOFFHI; 3058 howto = elf32_frv_howto_table + r_type; 3059 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3060 } 3061 3062 break; 3063 3064 case R_FRV_GOTTLSDESCLO: 3065 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3066 3067 /* Is this a setlo or setlos instruction? */ 3068 if ((insn & (unsigned long)0x01f70000) != 0x00f40000) 3069 { 3070 info->callbacks->einfo 3071 (_("%H: R_FRV_GOTTLSDESCLO" 3072 " not applied to a setlo or setlos instruction\n"), 3073 input_bfd, input_section, rel->r_offset); 3074 return FALSE; 3075 } 3076 3077 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3078 relocation + rel->r_addend) 3079 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3080 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) 3081 { 3082 /* Replace setlo/setlos with a nop. Preserve the 3083 packing bit. */ 3084 insn &= (unsigned long)0x80000000; 3085 insn |= (unsigned long)0x00880000; 3086 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3087 3088 /* Nothing to relocate. */ 3089 continue; 3090 } 3091 3092 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3093 { 3094 /* If the corresponding sethi (if it exists) decayed 3095 to a nop, make sure this becomes (or already is) a 3096 setlos, not setlo. */ 3097 if (IN_RANGE_FOR_SETLOS_P (picrel->tlsoff_entry)) 3098 { 3099 insn |= (unsigned long)0x00080000; 3100 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3101 } 3102 3103 /* Simply decay GOTTLSDESC to GOTTLSOFF. */ 3104 r_type = R_FRV_GOTTLSOFFLO; 3105 howto = elf32_frv_howto_table + r_type; 3106 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3107 } 3108 3109 break; 3110 3111 case R_FRV_TLSDESC_RELAX: 3112 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3113 3114 /* Is this an ldd instruction? */ 3115 if ((insn & (unsigned long)0x01fc0fc0) != 0x00080140) 3116 { 3117 info->callbacks->einfo 3118 (_("%H: R_FRV_TLSDESC_RELAX" 3119 " not applied to an ldd instruction\n"), 3120 input_bfd, input_section, rel->r_offset); 3121 return FALSE; 3122 } 3123 3124 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3125 relocation + rel->r_addend) 3126 && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 3127 info)) 3128 { 3129 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC 3130 with setlos #tlsmofflo(symbol+offset), gr<C+1>. 3131 Preserve the packing bit. */ 3132 insn = (insn & (unsigned long)0x80000000) 3133 | ((insn + (unsigned long)0x02000000) 3134 & (unsigned long)0x7e000000); 3135 insn |= (unsigned long)0x00fc0000; 3136 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3137 3138 r_type = R_FRV_TLSMOFFLO; 3139 howto = elf32_frv_howto_table + r_type; 3140 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3141 } 3142 3143 else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3144 relocation + rel->r_addend)) 3145 { 3146 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC 3147 with sethi #tlsmoffhi(symbol+offset), gr<C+1>. 3148 Preserve the packing bit. */ 3149 insn = (insn & (unsigned long)0x80000000) 3150 | ((insn + (unsigned long)0x02000000) 3151 & (unsigned long)0x7e000000); 3152 insn |= (unsigned long)0x00f80000; 3153 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3154 3155 r_type = R_FRV_TLSMOFFHI; 3156 howto = elf32_frv_howto_table + r_type; 3157 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3158 } 3159 3160 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3161 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry)) 3162 { 3163 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC 3164 with ldi @(grB, #gottlsoff12(symbol+offset), gr<C+1>. 3165 Preserve the packing bit. */ 3166 insn = (insn & (unsigned long)0x8003f000) 3167 | (unsigned long)0x00c80000 3168 | ((insn + (unsigned long)0x02000000) 3169 & (unsigned long)0x7e000000); 3170 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3171 3172 r_type = R_FRV_GOTTLSOFF12; 3173 howto = elf32_frv_howto_table + r_type; 3174 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3175 } 3176 3177 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3178 { 3179 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC 3180 with ld #tlsoff(symbol+offset)@(grB, grA), gr<C+1>. 3181 Preserve the packing bit. */ 3182 insn = (insn & (unsigned long)0x81ffffbf) 3183 | ((insn + (unsigned long)0x02000000) 3184 & (unsigned long)0x7e000000); 3185 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3186 3187 /* #tlsoff(symbol+offset) is just a relaxation 3188 annotation, so there's nothing left to 3189 relocate. */ 3190 continue; 3191 } 3192 3193 break; 3194 3195 case R_FRV_GETTLSOFF_RELAX: 3196 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3197 3198 /* Is this a calll or callil instruction? */ 3199 if ((insn & (unsigned long)0x7ff80fc0) != 0x02300000) 3200 { 3201 info->callbacks->einfo 3202 (_("%H: R_FRV_GETTLSOFF_RELAX" 3203 " not applied to a calll instruction\n"), 3204 input_bfd, input_section, rel->r_offset); 3205 return FALSE; 3206 } 3207 3208 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3209 relocation + rel->r_addend) 3210 && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 3211 info)) 3212 { 3213 /* Replace calll with a nop. Preserve the packing bit. */ 3214 insn &= (unsigned long)0x80000000; 3215 insn |= (unsigned long)0x00880000; 3216 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3217 3218 /* Nothing to relocate. */ 3219 continue; 3220 } 3221 3222 else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3223 relocation + rel->r_addend)) 3224 { 3225 /* Replace calll with setlo #tlsmofflo(symbol+offset), gr9. 3226 Preserve the packing bit. */ 3227 insn &= (unsigned long)0x80000000; 3228 insn |= (unsigned long)0x12f40000; 3229 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3230 3231 r_type = R_FRV_TLSMOFFLO; 3232 howto = elf32_frv_howto_table + r_type; 3233 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3234 } 3235 3236 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3237 { 3238 /* Replace calll with a nop. Preserve the packing bit. */ 3239 insn &= (unsigned long)0x80000000; 3240 insn |= (unsigned long)0x00880000; 3241 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3242 3243 /* Nothing to relocate. */ 3244 continue; 3245 } 3246 3247 break; 3248 3249 case R_FRV_GOTTLSOFF12: 3250 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3251 3252 /* Is this an ldi instruction? */ 3253 if ((insn & (unsigned long)0x01fc0000) != 0x00c80000) 3254 { 3255 info->callbacks->einfo 3256 (_("%H: R_FRV_GOTTLSOFF12" 3257 " not applied to an ldi instruction\n"), 3258 input_bfd, input_section, rel->r_offset); 3259 return FALSE; 3260 } 3261 3262 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, 3263 relocation + rel->r_addend)) 3264 { 3265 /* Replace ldi @(grB, #gottlsoff12(symbol+offset), grC 3266 with setlos #tlsmofflo(symbol+offset), grC. 3267 Preserve the packing bit. */ 3268 insn &= (unsigned long)0xfe000000; 3269 insn |= (unsigned long)0x00fc0000; 3270 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3271 3272 r_type = R_FRV_TLSMOFFLO; 3273 howto = elf32_frv_howto_table + r_type; 3274 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3275 } 3276 3277 break; 3278 3279 case R_FRV_GOTTLSOFFHI: 3280 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3281 3282 /* Is this a sethi instruction? */ 3283 if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) 3284 { 3285 info->callbacks->einfo 3286 (_("%H: R_FRV_GOTTLSOFFHI" 3287 " not applied to a sethi instruction\n"), 3288 input_bfd, input_section, rel->r_offset); 3289 return FALSE; 3290 } 3291 3292 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, 3293 relocation + rel->r_addend) 3294 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3295 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) 3296 { 3297 /* Replace sethi with a nop. Preserve the packing bit. */ 3298 insn &= (unsigned long)0x80000000; 3299 insn |= (unsigned long)0x00880000; 3300 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3301 3302 /* Nothing to relocate. */ 3303 continue; 3304 } 3305 3306 break; 3307 3308 case R_FRV_GOTTLSOFFLO: 3309 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3310 3311 /* Is this a setlo or setlos instruction? */ 3312 if ((insn & (unsigned long)0x01f70000) != 0x00f40000) 3313 { 3314 info->callbacks->einfo 3315 (_("%H: R_FRV_GOTTLSOFFLO" 3316 " not applied to a setlo or setlos instruction\n"), 3317 input_bfd, input_section, rel->r_offset); 3318 return FALSE; 3319 } 3320 3321 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, 3322 relocation + rel->r_addend) 3323 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3324 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) 3325 { 3326 /* Replace setlo/setlos with a nop. Preserve the 3327 packing bit. */ 3328 insn &= (unsigned long)0x80000000; 3329 insn |= (unsigned long)0x00880000; 3330 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3331 3332 /* Nothing to relocate. */ 3333 continue; 3334 } 3335 3336 break; 3337 3338 case R_FRV_TLSOFF_RELAX: 3339 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3340 3341 /* Is this an ld instruction? */ 3342 if ((insn & (unsigned long)0x01fc0fc0) != 0x00080100) 3343 { 3344 info->callbacks->einfo 3345 (_("%H: R_FRV_TLSOFF_RELAX" 3346 " not applied to an ld instruction\n"), 3347 input_bfd, input_section, rel->r_offset); 3348 return FALSE; 3349 } 3350 3351 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, 3352 relocation + rel->r_addend)) 3353 { 3354 /* Replace ld #gottlsoff(symbol+offset)@(grB, grA), grC 3355 with setlos #tlsmofflo(symbol+offset), grC. 3356 Preserve the packing bit. */ 3357 insn &= (unsigned long)0xfe000000; 3358 insn |= (unsigned long)0x00fc0000; 3359 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3360 3361 r_type = R_FRV_TLSMOFFLO; 3362 howto = elf32_frv_howto_table + r_type; 3363 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3364 } 3365 3366 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3367 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry)) 3368 { 3369 /* Replace ld #tlsoff(symbol+offset)@(grB, grA), grC 3370 with ldi @(grB, #gottlsoff12(symbol+offset), grC. 3371 Preserve the packing bit. */ 3372 insn = (insn & (unsigned long)0xfe03f000) 3373 | (unsigned long)0x00c80000; 3374 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3375 3376 r_type = R_FRV_GOTTLSOFF12; 3377 howto = elf32_frv_howto_table + r_type; 3378 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3379 } 3380 3381 break; 3382 3383 case R_FRV_TLSMOFFHI: 3384 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3385 3386 /* Is this a sethi instruction? */ 3387 if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) 3388 { 3389 info->callbacks->einfo 3390 (_("%H: R_FRV_TLSMOFFHI" 3391 " not applied to a sethi instruction\n"), 3392 input_bfd, input_section, rel->r_offset); 3393 return FALSE; 3394 } 3395 3396 if (TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 3397 info)) 3398 { 3399 /* Replace sethi with a nop. Preserve the packing bit. */ 3400 insn &= (unsigned long)0x80000000; 3401 insn |= (unsigned long)0x00880000; 3402 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3403 3404 /* Nothing to relocate. */ 3405 continue; 3406 } 3407 3408 break; 3409 3410 case R_FRV_TLSMOFFLO: 3411 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3412 3413 /* Is this a setlo or setlos instruction? */ 3414 if ((insn & (unsigned long)0x01f70000) != 0x00f40000) 3415 { 3416 info->callbacks->einfo 3417 (_("R_FRV_TLSMOFFLO" 3418 " not applied to a setlo or setlos instruction\n"), 3419 input_bfd, input_section, rel->r_offset); 3420 return FALSE; 3421 } 3422 3423 if (TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 3424 info)) 3425 /* If the corresponding sethi (if it exists) decayed 3426 to a nop, make sure this becomes (or already is) a 3427 setlos, not setlo. */ 3428 { 3429 insn |= (unsigned long)0x00080000; 3430 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3431 } 3432 3433 break; 3434 3435 /* 3436 There's nothing to relax in these: 3437 R_FRV_TLSDESC_VALUE 3438 R_FRV_TLSOFF 3439 R_FRV_TLSMOFF12 3440 R_FRV_TLSMOFFHI 3441 R_FRV_TLSMOFFLO 3442 R_FRV_TLSMOFF 3443 */ 3444 3445 default: 3446 break; 3447 } 3448 3449 switch (r_type) 3450 { 3451 case R_FRV_LABEL24: 3452 check_segment[0] = isec_segment; 3453 if (! IS_FDPIC (output_bfd)) 3454 check_segment[1] = isec_segment; 3455 else if (picrel->plt) 3456 { 3457 relocation = frvfdpic_plt_section (info)->output_section->vma 3458 + frvfdpic_plt_section (info)->output_offset 3459 + picrel->plt_entry; 3460 check_segment[1] = plt_segment; 3461 } 3462 /* We don't want to warn on calls to undefined weak symbols, 3463 as calls to them must be protected by non-NULL tests 3464 anyway, and unprotected calls would invoke undefined 3465 behavior. */ 3466 else if (picrel->symndx == -1 3467 && picrel->d.h->root.type == bfd_link_hash_undefweak) 3468 check_segment[1] = check_segment[0]; 3469 else 3470 check_segment[1] = sec 3471 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3472 : (unsigned)-1; 3473 break; 3474 3475 case R_FRV_GOT12: 3476 case R_FRV_GOTHI: 3477 case R_FRV_GOTLO: 3478 relocation = picrel->got_entry; 3479 check_segment[0] = check_segment[1] = got_segment; 3480 break; 3481 3482 case R_FRV_FUNCDESC_GOT12: 3483 case R_FRV_FUNCDESC_GOTHI: 3484 case R_FRV_FUNCDESC_GOTLO: 3485 relocation = picrel->fdgot_entry; 3486 check_segment[0] = check_segment[1] = got_segment; 3487 break; 3488 3489 case R_FRV_GOTOFFHI: 3490 case R_FRV_GOTOFF12: 3491 case R_FRV_GOTOFFLO: 3492 relocation -= frvfdpic_got_section (info)->output_section->vma 3493 + frvfdpic_got_section (info)->output_offset 3494 + frvfdpic_got_initial_offset (info); 3495 check_segment[0] = got_segment; 3496 check_segment[1] = sec 3497 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3498 : (unsigned)-1; 3499 break; 3500 3501 case R_FRV_FUNCDESC_GOTOFF12: 3502 case R_FRV_FUNCDESC_GOTOFFHI: 3503 case R_FRV_FUNCDESC_GOTOFFLO: 3504 relocation = picrel->fd_entry; 3505 check_segment[0] = check_segment[1] = got_segment; 3506 break; 3507 3508 case R_FRV_FUNCDESC: 3509 { 3510 int dynindx; 3511 bfd_vma addend = rel->r_addend; 3512 3513 if (! (h && h->root.type == bfd_link_hash_undefweak 3514 && FRVFDPIC_SYM_LOCAL (info, h))) 3515 { 3516 /* If the symbol is dynamic and there may be dynamic 3517 symbol resolution because we are or are linked with a 3518 shared library, emit a FUNCDESC relocation such that 3519 the dynamic linker will allocate the function 3520 descriptor. If the symbol needs a non-local function 3521 descriptor but binds locally (e.g., its visibility is 3522 protected, emit a dynamic relocation decayed to 3523 section+offset. */ 3524 if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h) 3525 && FRVFDPIC_SYM_LOCAL (info, h) 3526 && !bfd_link_pde (info)) 3527 { 3528 dynindx = elf_section_data (h->root.u.def.section 3529 ->output_section)->dynindx; 3530 addend += h->root.u.def.section->output_offset 3531 + h->root.u.def.value; 3532 } 3533 else if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h)) 3534 { 3535 if (addend) 3536 { 3537 info->callbacks->einfo 3538 (_("%H: %s references dynamic symbol" 3539 " with nonzero addend\n"), 3540 input_bfd, input_section, rel->r_offset, 3541 "R_FRV_FUNCDESC"); 3542 return FALSE; 3543 } 3544 dynindx = h->dynindx; 3545 } 3546 else 3547 { 3548 /* Otherwise, we know we have a private function 3549 descriptor, so reference it directly. */ 3550 BFD_ASSERT (picrel->privfd); 3551 r_type = R_FRV_32; 3552 dynindx = elf_section_data (frvfdpic_got_section (info) 3553 ->output_section)->dynindx; 3554 addend = frvfdpic_got_section (info)->output_offset 3555 + frvfdpic_got_initial_offset (info) 3556 + picrel->fd_entry; 3557 } 3558 3559 /* If there is room for dynamic symbol resolution, emit 3560 the dynamic relocation. However, if we're linking an 3561 executable at a fixed location, we won't have emitted a 3562 dynamic symbol entry for the got section, so idx will 3563 be zero, which means we can and should compute the 3564 address of the private descriptor ourselves. */ 3565 if (bfd_link_pde (info) 3566 && (!h || FRVFDPIC_FUNCDESC_LOCAL (info, h))) 3567 { 3568 addend += frvfdpic_got_section (info)->output_section->vma; 3569 if ((bfd_get_section_flags (output_bfd, 3570 input_section->output_section) 3571 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 3572 { 3573 bfd_vma offset; 3574 3575 if (_frvfdpic_osec_readonly_p (output_bfd, 3576 input_section 3577 ->output_section)) 3578 { 3579 info->callbacks->einfo 3580 (_("%H: cannot emit fixups" 3581 " in read-only section\n"), 3582 input_bfd, input_section, rel->r_offset); 3583 return FALSE; 3584 } 3585 3586 offset = _bfd_elf_section_offset 3587 (output_bfd, info, 3588 input_section, rel->r_offset); 3589 3590 if (offset != (bfd_vma)-1) 3591 _frvfdpic_add_rofixup (output_bfd, 3592 frvfdpic_gotfixup_section 3593 (info), 3594 offset + input_section 3595 ->output_section->vma 3596 + input_section->output_offset, 3597 picrel); 3598 } 3599 } 3600 else if ((bfd_get_section_flags (output_bfd, 3601 input_section->output_section) 3602 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 3603 { 3604 bfd_vma offset; 3605 3606 if (_frvfdpic_osec_readonly_p (output_bfd, 3607 input_section 3608 ->output_section)) 3609 { 3610 info->callbacks->einfo 3611 (_("%H: cannot emit dynamic relocations" 3612 " in read-only section\n"), 3613 input_bfd, input_section, rel->r_offset); 3614 return FALSE; 3615 } 3616 3617 offset = _bfd_elf_section_offset 3618 (output_bfd, info, 3619 input_section, rel->r_offset); 3620 3621 if (offset != (bfd_vma)-1) 3622 _frvfdpic_add_dyn_reloc (output_bfd, 3623 frvfdpic_gotrel_section (info), 3624 offset + input_section 3625 ->output_section->vma 3626 + input_section->output_offset, 3627 r_type, dynindx, addend, picrel); 3628 } 3629 else 3630 addend += frvfdpic_got_section (info)->output_section->vma; 3631 } 3632 3633 /* We want the addend in-place because dynamic 3634 relocations are REL. Setting relocation to it should 3635 arrange for it to be installed. */ 3636 relocation = addend - rel->r_addend; 3637 } 3638 check_segment[0] = check_segment[1] = got_segment; 3639 break; 3640 3641 case R_FRV_32: 3642 if (! IS_FDPIC (output_bfd)) 3643 { 3644 check_segment[0] = check_segment[1] = -1; 3645 break; 3646 } 3647 /* Fall through. */ 3648 case R_FRV_FUNCDESC_VALUE: 3649 { 3650 int dynindx; 3651 bfd_vma addend = rel->r_addend; 3652 3653 /* If the symbol is dynamic but binds locally, use 3654 section+offset. */ 3655 if (h && ! FRVFDPIC_SYM_LOCAL (info, h)) 3656 { 3657 if (addend && r_type == R_FRV_FUNCDESC_VALUE) 3658 { 3659 info->callbacks->einfo 3660 (_("%H: %s references dynamic symbol" 3661 " with nonzero addend\n"), 3662 input_bfd, input_section, rel->r_offset, 3663 "R_FRV_FUNCDESC_VALUE"); 3664 return FALSE; 3665 } 3666 dynindx = h->dynindx; 3667 } 3668 else 3669 { 3670 if (h) 3671 addend += h->root.u.def.value; 3672 else 3673 addend += sym->st_value; 3674 if (osec) 3675 addend += osec->output_offset; 3676 if (osec && osec->output_section 3677 && ! bfd_is_abs_section (osec->output_section) 3678 && ! bfd_is_und_section (osec->output_section)) 3679 dynindx = elf_section_data (osec->output_section)->dynindx; 3680 else 3681 dynindx = 0; 3682 } 3683 3684 /* If we're linking an executable at a fixed address, we 3685 can omit the dynamic relocation as long as the symbol 3686 is defined in the current link unit (which is implied 3687 by its output section not being NULL). */ 3688 if (bfd_link_pde (info) 3689 && (!h || FRVFDPIC_SYM_LOCAL (info, h))) 3690 { 3691 if (osec) 3692 addend += osec->output_section->vma; 3693 if (IS_FDPIC (input_bfd) 3694 && (bfd_get_section_flags (output_bfd, 3695 input_section->output_section) 3696 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 3697 { 3698 if (_frvfdpic_osec_readonly_p (output_bfd, 3699 input_section 3700 ->output_section)) 3701 { 3702 info->callbacks->einfo 3703 (_("%H: cannot emit fixups in read-only section\n"), 3704 input_bfd, input_section, rel->r_offset); 3705 return FALSE; 3706 } 3707 if (!h || h->root.type != bfd_link_hash_undefweak) 3708 { 3709 bfd_vma offset = _bfd_elf_section_offset 3710 (output_bfd, info, 3711 input_section, rel->r_offset); 3712 3713 if (offset != (bfd_vma)-1) 3714 { 3715 _frvfdpic_add_rofixup (output_bfd, 3716 frvfdpic_gotfixup_section 3717 (info), 3718 offset + input_section 3719 ->output_section->vma 3720 + input_section->output_offset, 3721 picrel); 3722 if (r_type == R_FRV_FUNCDESC_VALUE) 3723 _frvfdpic_add_rofixup 3724 (output_bfd, 3725 frvfdpic_gotfixup_section (info), 3726 offset 3727 + input_section->output_section->vma 3728 + input_section->output_offset + 4, picrel); 3729 } 3730 } 3731 } 3732 } 3733 else 3734 { 3735 if ((bfd_get_section_flags (output_bfd, 3736 input_section->output_section) 3737 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 3738 { 3739 bfd_vma offset; 3740 3741 if (_frvfdpic_osec_readonly_p (output_bfd, 3742 input_section 3743 ->output_section)) 3744 { 3745 info->callbacks->einfo 3746 (_("%H: cannot emit dynamic relocations" 3747 " in read-only section\n"), 3748 input_bfd, input_section, rel->r_offset); 3749 return FALSE; 3750 } 3751 3752 offset = _bfd_elf_section_offset 3753 (output_bfd, info, 3754 input_section, rel->r_offset); 3755 3756 if (offset != (bfd_vma)-1) 3757 _frvfdpic_add_dyn_reloc (output_bfd, 3758 frvfdpic_gotrel_section (info), 3759 offset + input_section 3760 ->output_section->vma 3761 + input_section->output_offset, 3762 r_type, dynindx, addend, picrel); 3763 } 3764 else if (osec) 3765 addend += osec->output_section->vma; 3766 /* We want the addend in-place because dynamic 3767 relocations are REL. Setting relocation to it 3768 should arrange for it to be installed. */ 3769 relocation = addend - rel->r_addend; 3770 } 3771 3772 if (r_type == R_FRV_FUNCDESC_VALUE) 3773 { 3774 /* If we've omitted the dynamic relocation, just emit 3775 the fixed addresses of the symbol and of the local 3776 GOT base offset. */ 3777 if (bfd_link_pde (info) 3778 && (!h || FRVFDPIC_SYM_LOCAL (info, h))) 3779 bfd_put_32 (output_bfd, 3780 frvfdpic_got_section (info)->output_section->vma 3781 + frvfdpic_got_section (info)->output_offset 3782 + frvfdpic_got_initial_offset (info), 3783 contents + rel->r_offset + 4); 3784 else 3785 /* A function descriptor used for lazy or local 3786 resolving is initialized such that its high word 3787 contains the output section index in which the 3788 PLT entries are located, and the low word 3789 contains the offset of the lazy PLT entry entry 3790 point into that section. */ 3791 bfd_put_32 (output_bfd, 3792 h && ! FRVFDPIC_SYM_LOCAL (info, h) 3793 ? 0 3794 : _frvfdpic_osec_to_segment (output_bfd, 3795 sec 3796 ->output_section), 3797 contents + rel->r_offset + 4); 3798 } 3799 } 3800 check_segment[0] = check_segment[1] = got_segment; 3801 break; 3802 3803 case R_FRV_GPREL12: 3804 case R_FRV_GPRELU12: 3805 case R_FRV_GPREL32: 3806 case R_FRV_GPRELHI: 3807 case R_FRV_GPRELLO: 3808 check_segment[0] = gprel_segment; 3809 check_segment[1] = sec 3810 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3811 : (unsigned)-1; 3812 break; 3813 3814 case R_FRV_GETTLSOFF: 3815 relocation = frvfdpic_plt_section (info)->output_section->vma 3816 + frvfdpic_plt_section (info)->output_offset 3817 + picrel->tlsplt_entry; 3818 BFD_ASSERT (picrel->tlsplt_entry != (bfd_vma)-1 3819 && picrel->tlsdesc_entry); 3820 check_segment[0] = isec_segment; 3821 check_segment[1] = plt_segment; 3822 break; 3823 3824 case R_FRV_GOTTLSDESC12: 3825 case R_FRV_GOTTLSDESCHI: 3826 case R_FRV_GOTTLSDESCLO: 3827 BFD_ASSERT (picrel->tlsdesc_entry); 3828 relocation = picrel->tlsdesc_entry; 3829 check_segment[0] = tls_segment; 3830 check_segment[1] = sec 3831 && ! bfd_is_abs_section (sec) 3832 && ! bfd_is_und_section (sec) 3833 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3834 : tls_segment; 3835 break; 3836 3837 case R_FRV_TLSMOFF12: 3838 case R_FRV_TLSMOFFHI: 3839 case R_FRV_TLSMOFFLO: 3840 case R_FRV_TLSMOFF: 3841 check_segment[0] = tls_segment; 3842 if (! sec) 3843 check_segment[1] = -1; 3844 else if (bfd_is_abs_section (sec) 3845 || bfd_is_und_section (sec)) 3846 { 3847 relocation = 0; 3848 check_segment[1] = tls_segment; 3849 } 3850 else if (sec->output_section) 3851 { 3852 relocation -= tls_biased_base (info); 3853 check_segment[1] = 3854 _frvfdpic_osec_to_segment (output_bfd, sec->output_section); 3855 } 3856 else 3857 check_segment[1] = -1; 3858 break; 3859 3860 case R_FRV_GOTTLSOFF12: 3861 case R_FRV_GOTTLSOFFHI: 3862 case R_FRV_GOTTLSOFFLO: 3863 BFD_ASSERT (picrel->tlsoff_entry); 3864 relocation = picrel->tlsoff_entry; 3865 check_segment[0] = tls_segment; 3866 check_segment[1] = sec 3867 && ! bfd_is_abs_section (sec) 3868 && ! bfd_is_und_section (sec) 3869 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3870 : tls_segment; 3871 break; 3872 3873 case R_FRV_TLSDESC_VALUE: 3874 case R_FRV_TLSOFF: 3875 /* These shouldn't be present in input object files. */ 3876 check_segment[0] = check_segment[1] = isec_segment; 3877 break; 3878 3879 case R_FRV_TLSDESC_RELAX: 3880 case R_FRV_GETTLSOFF_RELAX: 3881 case R_FRV_TLSOFF_RELAX: 3882 /* These are just annotations for relaxation, nothing to do 3883 here. */ 3884 continue; 3885 3886 default: 3887 check_segment[0] = isec_segment; 3888 check_segment[1] = sec 3889 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3890 : (unsigned)-1; 3891 break; 3892 } 3893 3894 if (check_segment[0] != check_segment[1] && IS_FDPIC (output_bfd)) 3895 { 3896 /* If you take this out, remove the #error from fdpic-static-6.d 3897 in the ld testsuite. */ 3898 /* This helps catch problems in GCC while we can't do more 3899 than static linking. The idea is to test whether the 3900 input file basename is crt0.o only once. */ 3901 if (silence_segment_error == 1) 3902 silence_segment_error = 3903 (strlen (input_bfd->filename) == 6 3904 && filename_cmp (input_bfd->filename, "crt0.o") == 0) 3905 || (strlen (input_bfd->filename) > 6 3906 && filename_cmp (input_bfd->filename 3907 + strlen (input_bfd->filename) - 7, 3908 "/crt0.o") == 0) 3909 ? -1 : 0; 3910 if (!silence_segment_error 3911 /* We don't want duplicate errors for undefined 3912 symbols. */ 3913 && !(picrel && picrel->symndx == -1 3914 && picrel->d.h->root.type == bfd_link_hash_undefined)) 3915 { 3916 info->callbacks->einfo 3917 /* xgettext:c-format */ 3918 (_("%H: reloc against `%s' references a different segment\n"), 3919 input_bfd, input_section, rel->r_offset, name); 3920 } 3921 if (!silence_segment_error && bfd_link_pic (info)) 3922 return FALSE; 3923 elf_elfheader (output_bfd)->e_flags |= EF_FRV_PIC; 3924 } 3925 3926 switch (r_type) 3927 { 3928 case R_FRV_GOTOFFHI: 3929 case R_FRV_TLSMOFFHI: 3930 /* We need the addend to be applied before we shift the 3931 value right. */ 3932 relocation += rel->r_addend; 3933 /* Fall through. */ 3934 case R_FRV_GOTHI: 3935 case R_FRV_FUNCDESC_GOTHI: 3936 case R_FRV_FUNCDESC_GOTOFFHI: 3937 case R_FRV_GOTTLSOFFHI: 3938 case R_FRV_GOTTLSDESCHI: 3939 relocation >>= 16; 3940 /* Fall through. */ 3941 3942 case R_FRV_GOTLO: 3943 case R_FRV_FUNCDESC_GOTLO: 3944 case R_FRV_GOTOFFLO: 3945 case R_FRV_FUNCDESC_GOTOFFLO: 3946 case R_FRV_GOTTLSOFFLO: 3947 case R_FRV_GOTTLSDESCLO: 3948 case R_FRV_TLSMOFFLO: 3949 relocation &= 0xffff; 3950 break; 3951 3952 default: 3953 break; 3954 } 3955 3956 switch (r_type) 3957 { 3958 case R_FRV_LABEL24: 3959 if (! IS_FDPIC (output_bfd) || ! picrel->plt) 3960 break; 3961 /* Fall through. */ 3962 3963 /* When referencing a GOT entry, a function descriptor or a 3964 PLT, we don't want the addend to apply to the reference, 3965 but rather to the referenced symbol. The actual entry 3966 will have already been created taking the addend into 3967 account, so cancel it out here. */ 3968 case R_FRV_GOT12: 3969 case R_FRV_GOTHI: 3970 case R_FRV_GOTLO: 3971 case R_FRV_FUNCDESC_GOT12: 3972 case R_FRV_FUNCDESC_GOTHI: 3973 case R_FRV_FUNCDESC_GOTLO: 3974 case R_FRV_FUNCDESC_GOTOFF12: 3975 case R_FRV_FUNCDESC_GOTOFFHI: 3976 case R_FRV_FUNCDESC_GOTOFFLO: 3977 case R_FRV_GETTLSOFF: 3978 case R_FRV_GOTTLSDESC12: 3979 case R_FRV_GOTTLSDESCHI: 3980 case R_FRV_GOTTLSDESCLO: 3981 case R_FRV_GOTTLSOFF12: 3982 case R_FRV_GOTTLSOFFHI: 3983 case R_FRV_GOTTLSOFFLO: 3984 /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF12 3985 here, since we do want to apply the addend to the others. 3986 Note that we've applied the addend to GOTOFFHI before we 3987 shifted it right. */ 3988 case R_FRV_GOTOFFHI: 3989 case R_FRV_TLSMOFFHI: 3990 relocation -= rel->r_addend; 3991 break; 3992 3993 default: 3994 break; 3995 } 3996 3997 if (r_type == R_FRV_HI16) 3998 r = elf32_frv_relocate_hi16 (input_bfd, rel, contents, relocation); 3999 4000 else if (r_type == R_FRV_LO16) 4001 r = elf32_frv_relocate_lo16 (input_bfd, rel, contents, relocation); 4002 4003 else if (r_type == R_FRV_LABEL24 || r_type == R_FRV_GETTLSOFF) 4004 r = elf32_frv_relocate_label24 (input_bfd, input_section, rel, 4005 contents, relocation); 4006 4007 else if (r_type == R_FRV_GPREL12) 4008 r = elf32_frv_relocate_gprel12 (info, input_bfd, input_section, rel, 4009 contents, relocation); 4010 4011 else if (r_type == R_FRV_GPRELU12) 4012 r = elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, rel, 4013 contents, relocation); 4014 4015 else if (r_type == R_FRV_GPRELLO) 4016 r = elf32_frv_relocate_gprello (info, input_bfd, input_section, rel, 4017 contents, relocation); 4018 4019 else if (r_type == R_FRV_GPRELHI) 4020 r = elf32_frv_relocate_gprelhi (info, input_bfd, input_section, rel, 4021 contents, relocation); 4022 4023 else if (r_type == R_FRV_TLSOFF 4024 || r_type == R_FRV_TLSDESC_VALUE) 4025 r = bfd_reloc_notsupported; 4026 4027 else 4028 r = frv_final_link_relocate (howto, input_bfd, input_section, contents, 4029 rel, relocation); 4030 4031 if (r != bfd_reloc_ok) 4032 { 4033 const char * msg = (const char *) NULL; 4034 4035 switch (r) 4036 { 4037 case bfd_reloc_overflow: 4038 (*info->callbacks->reloc_overflow) 4039 (info, (h ? &h->root : NULL), name, howto->name, 4040 (bfd_vma) 0, input_bfd, input_section, rel->r_offset); 4041 break; 4042 4043 case bfd_reloc_undefined: 4044 (*info->callbacks->undefined_symbol) 4045 (info, name, input_bfd, input_section, rel->r_offset, TRUE); 4046 break; 4047 4048 case bfd_reloc_outofrange: 4049 msg = _("internal error: out of range error"); 4050 break; 4051 4052 case bfd_reloc_notsupported: 4053 msg = _("internal error: unsupported relocation error"); 4054 break; 4055 4056 case bfd_reloc_dangerous: 4057 msg = _("internal error: dangerous relocation"); 4058 break; 4059 4060 default: 4061 msg = _("internal error: unknown error"); 4062 break; 4063 } 4064 4065 if (msg) 4066 { 4067 info->callbacks->einfo 4068 /* xgettext:c-format */ 4069 (_("%H: reloc against `%s': %s\n"), 4070 input_bfd, input_section, rel->r_offset, name, msg); 4071 return FALSE; 4072 } 4073 } 4074 } 4075 4076 return TRUE; 4077 } 4078 4079 /* Return the section that should be marked against GC for a given 4080 relocation. */ 4081 4082 static asection * 4083 elf32_frv_gc_mark_hook (asection *sec, 4084 struct bfd_link_info *info, 4085 Elf_Internal_Rela *rel, 4086 struct elf_link_hash_entry *h, 4087 Elf_Internal_Sym *sym) 4088 { 4089 if (h != NULL) 4090 switch (ELF32_R_TYPE (rel->r_info)) 4091 { 4092 case R_FRV_GNU_VTINHERIT: 4093 case R_FRV_GNU_VTENTRY: 4094 return NULL; 4095 } 4096 4097 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 4098 } 4099 4100 /* Hook called by the linker routine which adds symbols from an object 4101 file. We use it to put .comm items in .scomm, and not .comm. */ 4102 4103 static bfd_boolean 4104 elf32_frv_add_symbol_hook (bfd *abfd, 4105 struct bfd_link_info *info, 4106 Elf_Internal_Sym *sym, 4107 const char **namep ATTRIBUTE_UNUSED, 4108 flagword *flagsp ATTRIBUTE_UNUSED, 4109 asection **secp, 4110 bfd_vma *valp) 4111 { 4112 if (sym->st_shndx == SHN_COMMON 4113 && !bfd_link_relocatable (info) 4114 && (int)sym->st_size <= (int)bfd_get_gp_size (abfd)) 4115 { 4116 /* Common symbols less than or equal to -G nn bytes are 4117 automatically put into .sbss. */ 4118 4119 asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); 4120 4121 if (scomm == NULL) 4122 { 4123 scomm = bfd_make_section_with_flags (abfd, ".scommon", 4124 (SEC_ALLOC 4125 | SEC_IS_COMMON 4126 | SEC_LINKER_CREATED)); 4127 if (scomm == NULL) 4128 return FALSE; 4129 } 4130 4131 *secp = scomm; 4132 *valp = sym->st_size; 4133 } 4134 4135 return TRUE; 4136 } 4137 4138 /* We need dynamic symbols for every section, since segments can 4139 relocate independently. */ 4140 static bfd_boolean 4141 _frvfdpic_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED, 4142 struct bfd_link_info *info 4143 ATTRIBUTE_UNUSED, 4144 asection *p ATTRIBUTE_UNUSED) 4145 { 4146 switch (elf_section_data (p)->this_hdr.sh_type) 4147 { 4148 case SHT_PROGBITS: 4149 case SHT_NOBITS: 4150 /* If sh_type is yet undecided, assume it could be 4151 SHT_PROGBITS/SHT_NOBITS. */ 4152 case SHT_NULL: 4153 return FALSE; 4154 4155 /* There shouldn't be section relative relocations 4156 against any other section. */ 4157 default: 4158 return TRUE; 4159 } 4160 } 4161 4162 /* Create a .got section, as well as its additional info field. This 4163 is almost entirely copied from 4164 elflink.c:_bfd_elf_create_got_section(). */ 4165 4166 static bfd_boolean 4167 _frv_create_got_section (bfd *abfd, struct bfd_link_info *info) 4168 { 4169 flagword flags, pltflags; 4170 asection *s; 4171 struct elf_link_hash_entry *h; 4172 struct bfd_link_hash_entry *bh; 4173 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 4174 int ptralign; 4175 int offset; 4176 4177 /* This function may be called more than once. */ 4178 s = elf_hash_table (info)->sgot; 4179 if (s != NULL) 4180 return TRUE; 4181 4182 /* Machine specific: although pointers are 32-bits wide, we want the 4183 GOT to be aligned to a 64-bit boundary, such that function 4184 descriptors in it can be accessed with 64-bit loads and 4185 stores. */ 4186 ptralign = 3; 4187 4188 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 4189 | SEC_LINKER_CREATED); 4190 pltflags = flags; 4191 4192 s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); 4193 elf_hash_table (info)->sgot = s; 4194 if (s == NULL 4195 || !bfd_set_section_alignment (abfd, s, ptralign)) 4196 return FALSE; 4197 4198 if (bed->want_got_sym) 4199 { 4200 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got 4201 (or .got.plt) section. We don't do this in the linker script 4202 because we don't want to define the symbol if we are not creating 4203 a global offset table. */ 4204 h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_"); 4205 elf_hash_table (info)->hgot = h; 4206 if (h == NULL) 4207 return FALSE; 4208 4209 /* Machine-specific: we want the symbol for executables as 4210 well. */ 4211 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 4212 return FALSE; 4213 } 4214 4215 /* The first bit of the global offset table is the header. */ 4216 s->size += bed->got_header_size; 4217 4218 /* This is the machine-specific part. Create and initialize section 4219 data for the got. */ 4220 if (IS_FDPIC (abfd)) 4221 { 4222 frvfdpic_relocs_info (info) = htab_try_create (1, 4223 frvfdpic_relocs_info_hash, 4224 frvfdpic_relocs_info_eq, 4225 (htab_del) NULL); 4226 if (! frvfdpic_relocs_info (info)) 4227 return FALSE; 4228 4229 s = bfd_make_section_anyway_with_flags (abfd, ".rel.got", 4230 (flags | SEC_READONLY)); 4231 elf_hash_table (info)->srelgot = s; 4232 if (s == NULL 4233 || ! bfd_set_section_alignment (abfd, s, 2)) 4234 return FALSE; 4235 4236 /* Machine-specific. */ 4237 s = bfd_make_section_anyway_with_flags (abfd, ".rofixup", 4238 (flags | SEC_READONLY)); 4239 if (s == NULL 4240 || ! bfd_set_section_alignment (abfd, s, 2)) 4241 return FALSE; 4242 4243 frvfdpic_gotfixup_section (info) = s; 4244 offset = -2048; 4245 flags = BSF_GLOBAL; 4246 } 4247 else 4248 { 4249 offset = 2048; 4250 flags = BSF_GLOBAL | BSF_WEAK; 4251 } 4252 4253 /* Define _gp in .rofixup, for FDPIC, or .got otherwise. If it 4254 turns out that we're linking with a different linker script, the 4255 linker script will override it. */ 4256 bh = NULL; 4257 if (!(_bfd_generic_link_add_one_symbol 4258 (info, abfd, "_gp", flags, s, offset, (const char *) NULL, FALSE, 4259 bed->collect, &bh))) 4260 return FALSE; 4261 h = (struct elf_link_hash_entry *) bh; 4262 h->def_regular = 1; 4263 h->type = STT_OBJECT; 4264 /* h->other = STV_HIDDEN; */ /* Should we? */ 4265 4266 /* Machine-specific: we want the symbol for executables as well. */ 4267 if (IS_FDPIC (abfd) && ! bfd_elf_link_record_dynamic_symbol (info, h)) 4268 return FALSE; 4269 4270 if (!IS_FDPIC (abfd)) 4271 return TRUE; 4272 4273 /* FDPIC supports Thread Local Storage, and this may require a 4274 procedure linkage table for TLS PLT entries. */ 4275 4276 /* This is mostly copied from 4277 elflink.c:_bfd_elf_create_dynamic_sections(). */ 4278 4279 flags = pltflags; 4280 pltflags |= SEC_CODE; 4281 if (bed->plt_not_loaded) 4282 pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS); 4283 if (bed->plt_readonly) 4284 pltflags |= SEC_READONLY; 4285 4286 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags); 4287 if (s == NULL 4288 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) 4289 return FALSE; 4290 /* FRV-specific: remember it. */ 4291 frvfdpic_plt_section (info) = s; 4292 4293 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the 4294 .plt section. */ 4295 if (bed->want_plt_sym) 4296 { 4297 h = _bfd_elf_define_linkage_sym (abfd, info, s, 4298 "_PROCEDURE_LINKAGE_TABLE_"); 4299 elf_hash_table (info)->hplt = h; 4300 if (h == NULL) 4301 return FALSE; 4302 } 4303 4304 /* FRV-specific: we want rel relocations for the plt. */ 4305 s = bfd_make_section_anyway_with_flags (abfd, ".rel.plt", 4306 flags | SEC_READONLY); 4307 if (s == NULL 4308 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 4309 return FALSE; 4310 /* FRV-specific: remember it. */ 4311 frvfdpic_pltrel_section (info) = s; 4312 4313 return TRUE; 4314 } 4315 4316 /* Make sure the got and plt sections exist, and that our pointers in 4317 the link hash table point to them. */ 4318 4319 static bfd_boolean 4320 elf32_frvfdpic_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 4321 { 4322 /* This is mostly copied from 4323 elflink.c:_bfd_elf_create_dynamic_sections(). */ 4324 flagword flags; 4325 asection *s; 4326 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 4327 4328 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 4329 | SEC_LINKER_CREATED); 4330 4331 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and 4332 .rel[a].bss sections. */ 4333 4334 /* FRV-specific: we want to create the GOT and the PLT in the FRV 4335 way. */ 4336 if (! _frv_create_got_section (abfd, info)) 4337 return FALSE; 4338 4339 /* FRV-specific: make sure we created everything we wanted. */ 4340 BFD_ASSERT (frvfdpic_got_section (info) && frvfdpic_gotrel_section (info) 4341 && frvfdpic_gotfixup_section (info) 4342 && frvfdpic_plt_section (info) 4343 && frvfdpic_pltrel_section (info)); 4344 4345 if (bed->want_dynbss) 4346 { 4347 /* The .dynbss section is a place to put symbols which are defined 4348 by dynamic objects, are referenced by regular objects, and are 4349 not functions. We must allocate space for them in the process 4350 image and use a R_*_COPY reloc to tell the dynamic linker to 4351 initialize them at run time. The linker script puts the .dynbss 4352 section into the .bss section of the final image. */ 4353 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss", 4354 SEC_ALLOC | SEC_LINKER_CREATED); 4355 if (s == NULL) 4356 return FALSE; 4357 4358 /* The .rel[a].bss section holds copy relocs. This section is not 4359 normally needed. We need to create it here, though, so that the 4360 linker will map it to an output section. We can't just create it 4361 only if we need it, because we will not know whether we need it 4362 until we have seen all the input files, and the first time the 4363 main linker code calls BFD after examining all the input files 4364 (size_dynamic_sections) the input sections have already been 4365 mapped to the output sections. If the section turns out not to 4366 be needed, we can discard it later. We will never need this 4367 section when generating a shared object, since they do not use 4368 copy relocs. */ 4369 if (! bfd_link_pic (info)) 4370 { 4371 s = bfd_make_section_anyway_with_flags (abfd, 4372 (bed->default_use_rela_p 4373 ? ".rela.bss" : ".rel.bss"), 4374 flags | SEC_READONLY); 4375 if (s == NULL 4376 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 4377 return FALSE; 4378 } 4379 } 4380 4381 return TRUE; 4382 } 4383 4384 /* Compute the total GOT and PLT size required by each symbol in each 4385 range. Symbols may require up to 4 words in the GOT: an entry 4386 pointing to the symbol, an entry pointing to its function 4387 descriptor, and a private function descriptors taking two 4388 words. */ 4389 4390 static void 4391 _frvfdpic_count_nontls_entries (struct frvfdpic_relocs_info *entry, 4392 struct _frvfdpic_dynamic_got_info *dinfo) 4393 { 4394 /* Allocate space for a GOT entry pointing to the symbol. */ 4395 if (entry->got12) 4396 dinfo->got12 += 4; 4397 else if (entry->gotlos) 4398 dinfo->gotlos += 4; 4399 else if (entry->gothilo) 4400 dinfo->gothilo += 4; 4401 else 4402 entry->relocs32--; 4403 entry->relocs32++; 4404 4405 /* Allocate space for a GOT entry pointing to the function 4406 descriptor. */ 4407 if (entry->fdgot12) 4408 dinfo->got12 += 4; 4409 else if (entry->fdgotlos) 4410 dinfo->gotlos += 4; 4411 else if (entry->fdgothilo) 4412 dinfo->gothilo += 4; 4413 else 4414 entry->relocsfd--; 4415 entry->relocsfd++; 4416 4417 /* Decide whether we need a PLT entry, a function descriptor in the 4418 GOT, and a lazy PLT entry for this symbol. */ 4419 entry->plt = entry->call 4420 && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) 4421 && elf_hash_table (dinfo->info)->dynamic_sections_created; 4422 entry->privfd = entry->plt 4423 || entry->fdgoff12 || entry->fdgofflos || entry->fdgoffhilo 4424 || ((entry->fd || entry->fdgot12 || entry->fdgotlos || entry->fdgothilo) 4425 && (entry->symndx != -1 4426 || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h))); 4427 entry->lazyplt = entry->privfd 4428 && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) 4429 && ! (dinfo->info->flags & DF_BIND_NOW) 4430 && elf_hash_table (dinfo->info)->dynamic_sections_created; 4431 4432 /* Allocate space for a function descriptor. */ 4433 if (entry->fdgoff12) 4434 dinfo->fd12 += 8; 4435 else if (entry->fdgofflos) 4436 dinfo->fdlos += 8; 4437 else if (entry->privfd && entry->plt) 4438 dinfo->fdplt += 8; 4439 else if (entry->privfd) 4440 dinfo->fdhilo += 8; 4441 else 4442 entry->relocsfdv--; 4443 entry->relocsfdv++; 4444 4445 if (entry->lazyplt) 4446 dinfo->lzplt += 8; 4447 } 4448 4449 /* Compute the total GOT size required by each TLS symbol in each 4450 range. Symbols may require up to 5 words in the GOT: an entry 4451 holding the TLS offset for the symbol, and an entry with a full TLS 4452 descriptor taking 4 words. */ 4453 4454 static void 4455 _frvfdpic_count_tls_entries (struct frvfdpic_relocs_info *entry, 4456 struct _frvfdpic_dynamic_got_info *dinfo, 4457 bfd_boolean subtract) 4458 { 4459 const int l = subtract ? -1 : 1; 4460 4461 /* Allocate space for a GOT entry with the TLS offset of the 4462 symbol. */ 4463 if (entry->tlsoff12) 4464 dinfo->got12 += 4 * l; 4465 else if (entry->tlsofflos) 4466 dinfo->gotlos += 4 * l; 4467 else if (entry->tlsoffhilo) 4468 dinfo->gothilo += 4 * l; 4469 else 4470 entry->relocstlsoff -= l; 4471 entry->relocstlsoff += l; 4472 4473 /* If there's any TLSOFF relocation, mark the output file as not 4474 suitable for dlopening. This mark will remain even if we relax 4475 all such relocations, but this is not a problem, since we'll only 4476 do so for executables, and we definitely don't want anyone 4477 dlopening executables. */ 4478 if (entry->relocstlsoff) 4479 dinfo->info->flags |= DF_STATIC_TLS; 4480 4481 /* Allocate space for a TLS descriptor. */ 4482 if (entry->tlsdesc12) 4483 dinfo->tlsd12 += 8 * l; 4484 else if (entry->tlsdesclos) 4485 dinfo->tlsdlos += 8 * l; 4486 else if (entry->tlsplt) 4487 dinfo->tlsdplt += 8 * l; 4488 else if (entry->tlsdeschilo) 4489 dinfo->tlsdhilo += 8 * l; 4490 else 4491 entry->relocstlsd -= l; 4492 entry->relocstlsd += l; 4493 } 4494 4495 /* Compute the number of dynamic relocations and fixups that a symbol 4496 requires, and add (or subtract) from the grand and per-symbol 4497 totals. */ 4498 4499 static void 4500 _frvfdpic_count_relocs_fixups (struct frvfdpic_relocs_info *entry, 4501 struct _frvfdpic_dynamic_got_info *dinfo, 4502 bfd_boolean subtract) 4503 { 4504 bfd_vma relocs = 0, fixups = 0, tlsrets = 0; 4505 4506 if (!bfd_link_pde (dinfo->info)) 4507 { 4508 relocs = entry->relocs32 + entry->relocsfd + entry->relocsfdv 4509 + entry->relocstlsd; 4510 4511 /* In the executable, TLS relocations to symbols that bind 4512 locally (including those that resolve to global TLS offsets) 4513 are resolved immediately, without any need for fixups or 4514 dynamic relocations. In shared libraries, however, we must 4515 emit dynamic relocations even for local symbols, because we 4516 don't know the module id the library is going to get at 4517 run-time, nor its TLS base offset. */ 4518 if (!bfd_link_executable (dinfo->info) 4519 || (entry->symndx == -1 4520 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))) 4521 relocs += entry->relocstlsoff; 4522 } 4523 else 4524 { 4525 if (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)) 4526 { 4527 if (entry->symndx != -1 4528 || entry->d.h->root.type != bfd_link_hash_undefweak) 4529 fixups += entry->relocs32 + 2 * entry->relocsfdv; 4530 fixups += entry->relocstlsd; 4531 tlsrets += entry->relocstlsd; 4532 } 4533 else 4534 { 4535 relocs += entry->relocs32 + entry->relocsfdv 4536 + entry->relocstlsoff + entry->relocstlsd; 4537 } 4538 4539 if (entry->symndx != -1 4540 || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h)) 4541 { 4542 if (entry->symndx != -1 4543 || entry->d.h->root.type != bfd_link_hash_undefweak) 4544 fixups += entry->relocsfd; 4545 } 4546 else 4547 relocs += entry->relocsfd; 4548 } 4549 4550 if (subtract) 4551 { 4552 relocs = - relocs; 4553 fixups = - fixups; 4554 tlsrets = - tlsrets; 4555 } 4556 4557 entry->dynrelocs += relocs; 4558 entry->fixups += fixups; 4559 dinfo->relocs += relocs; 4560 dinfo->fixups += fixups; 4561 dinfo->tls_ret_refs += tlsrets; 4562 } 4563 4564 /* Look for opportunities to relax TLS relocations. We can assume 4565 we're linking the main executable or a static-tls library, since 4566 otherwise we wouldn't have got here. When relaxing, we have to 4567 first undo any previous accounting of TLS uses of fixups, dynamic 4568 relocations, GOT and PLT entries. */ 4569 4570 static void 4571 _frvfdpic_relax_tls_entries (struct frvfdpic_relocs_info *entry, 4572 struct _frvfdpic_dynamic_got_info *dinfo, 4573 bfd_boolean relaxing) 4574 { 4575 bfd_boolean changed = ! relaxing; 4576 4577 BFD_ASSERT (bfd_link_executable (dinfo->info) 4578 || (dinfo->info->flags & DF_STATIC_TLS)); 4579 4580 if (entry->tlsdesc12 || entry->tlsdesclos || entry->tlsdeschilo) 4581 { 4582 if (! changed) 4583 { 4584 _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE); 4585 _frvfdpic_count_tls_entries (entry, dinfo, TRUE); 4586 changed = TRUE; 4587 } 4588 4589 /* When linking an executable, we can always decay GOTTLSDESC to 4590 TLSMOFF, if the symbol is local, or GOTTLSOFF, otherwise. 4591 When linking a static-tls shared library, using TLSMOFF is 4592 not an option, but we can still use GOTTLSOFF. When decaying 4593 to GOTTLSOFF, we must keep the GOT entry in range. We know 4594 it has to fit because we'll be trading the 4 words of hte TLS 4595 descriptor for a single word in the same range. */ 4596 if (! bfd_link_executable (dinfo->info) 4597 || (entry->symndx == -1 4598 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))) 4599 { 4600 entry->tlsoff12 |= entry->tlsdesc12; 4601 entry->tlsofflos |= entry->tlsdesclos; 4602 entry->tlsoffhilo |= entry->tlsdeschilo; 4603 } 4604 4605 entry->tlsdesc12 = entry->tlsdesclos = entry->tlsdeschilo = 0; 4606 } 4607 4608 /* We can only decay TLSOFFs or call #gettlsoff to TLSMOFF in the 4609 main executable. We have to check whether the symbol's TLSOFF is 4610 in range for a setlos. For symbols with a hash entry, we can 4611 determine exactly what to do; for others locals, we don't have 4612 addresses handy, so we use the size of the TLS section as an 4613 approximation. If we get it wrong, we'll retain a GOT entry 4614 holding the TLS offset (without dynamic relocations or fixups), 4615 but we'll still optimize away the loads from it. Since TLS sizes 4616 are generally very small, it's probably not worth attempting to 4617 do better than this. */ 4618 if ((entry->tlsplt 4619 || entry->tlsoff12 || entry->tlsofflos || entry->tlsoffhilo) 4620 && bfd_link_executable (dinfo->info) && relaxing 4621 && ((entry->symndx == -1 4622 && FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) 4623 /* The above may hold for an undefweak TLS symbol, so make 4624 sure we don't have this case before accessing def.value 4625 and def.section. */ 4626 && (entry->d.h->root.type == bfd_link_hash_undefweak 4627 || (bfd_vma)(entry->d.h->root.u.def.value 4628 + (entry->d.h->root.u.def.section 4629 ->output_section->vma) 4630 + entry->d.h->root.u.def.section->output_offset 4631 + entry->addend 4632 - tls_biased_base (dinfo->info) 4633 + 32768) < (bfd_vma)65536)) 4634 || (entry->symndx != -1 4635 && (elf_hash_table (dinfo->info)->tls_sec->size 4636 + entry->addend < 32768 + FRVFDPIC_TLS_BIAS)))) 4637 { 4638 if (! changed) 4639 { 4640 _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE); 4641 _frvfdpic_count_tls_entries (entry, dinfo, TRUE); 4642 changed = TRUE; 4643 } 4644 4645 entry->tlsplt = 4646 entry->tlsoff12 = entry->tlsofflos = entry->tlsoffhilo = 0; 4647 } 4648 4649 /* We can decay `call #gettlsoff' to a ldi #tlsoff if we already 4650 have a #gottlsoff12 relocation for this entry, or if we can fit 4651 one more in the 12-bit (and 16-bit) ranges. */ 4652 if (entry->tlsplt 4653 && (entry->tlsoff12 4654 || (relaxing 4655 && dinfo->got12 + dinfo->fd12 + dinfo->tlsd12 <= 4096 - 12 - 4 4656 && (dinfo->got12 + dinfo->fd12 + dinfo->tlsd12 4657 + dinfo->gotlos + dinfo->fdlos + dinfo->tlsdlos 4658 <= 65536 - 12 - 4)))) 4659 { 4660 if (! changed) 4661 { 4662 _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE); 4663 _frvfdpic_count_tls_entries (entry, dinfo, TRUE); 4664 changed = TRUE; 4665 } 4666 4667 entry->tlsoff12 = 1; 4668 entry->tlsplt = 0; 4669 } 4670 4671 if (changed) 4672 { 4673 _frvfdpic_count_tls_entries (entry, dinfo, FALSE); 4674 _frvfdpic_count_relocs_fixups (entry, dinfo, FALSE); 4675 } 4676 4677 return; 4678 } 4679 4680 /* Compute the total GOT and PLT size required by each symbol in each range. * 4681 Symbols may require up to 4 words in the GOT: an entry pointing to 4682 the symbol, an entry pointing to its function descriptor, and a 4683 private function descriptors taking two words. */ 4684 4685 static int 4686 _frvfdpic_count_got_plt_entries (void **entryp, void *dinfo_) 4687 { 4688 struct frvfdpic_relocs_info *entry = *entryp; 4689 struct _frvfdpic_dynamic_got_info *dinfo = dinfo_; 4690 4691 _frvfdpic_count_nontls_entries (entry, dinfo); 4692 4693 if (bfd_link_executable (dinfo->info) 4694 || (dinfo->info->flags & DF_STATIC_TLS)) 4695 _frvfdpic_relax_tls_entries (entry, dinfo, FALSE); 4696 else 4697 { 4698 _frvfdpic_count_tls_entries (entry, dinfo, FALSE); 4699 _frvfdpic_count_relocs_fixups (entry, dinfo, FALSE); 4700 } 4701 4702 return 1; 4703 } 4704 4705 /* Determine the positive and negative ranges to be used by each 4706 offset range in the GOT. FDCUR and CUR, that must be aligned to a 4707 double-word boundary, are the minimum (negative) and maximum 4708 (positive) GOT offsets already used by previous ranges, except for 4709 an ODD entry that may have been left behind. GOT and FD indicate 4710 the size of GOT entries and function descriptors that must be 4711 placed within the range from -WRAP to WRAP. If there's room left, 4712 up to FDPLT bytes should be reserved for additional function 4713 descriptors. */ 4714 4715 inline static bfd_signed_vma 4716 _frvfdpic_compute_got_alloc_data (struct _frvfdpic_dynamic_got_alloc_data *gad, 4717 bfd_signed_vma fdcur, 4718 bfd_signed_vma odd, 4719 bfd_signed_vma cur, 4720 bfd_vma got, 4721 bfd_vma fd, 4722 bfd_vma fdplt, 4723 bfd_vma tlsd, 4724 bfd_vma tlsdplt, 4725 bfd_vma wrap) 4726 { 4727 bfd_signed_vma wrapmin = -wrap; 4728 const bfd_vma tdescsz = 8; 4729 4730 /* Start at the given initial points. */ 4731 gad->fdcur = fdcur; 4732 gad->cur = cur; 4733 4734 /* If we had an incoming odd word and we have any got entries that 4735 are going to use it, consume it, otherwise leave gad->odd at 4736 zero. We might force gad->odd to zero and return the incoming 4737 odd such that it is used by the next range, but then GOT entries 4738 might appear to be out of order and we wouldn't be able to 4739 shorten the GOT by one word if it turns out to end with an 4740 unpaired GOT entry. */ 4741 if (odd && got) 4742 { 4743 gad->odd = odd; 4744 got -= 4; 4745 odd = 0; 4746 } 4747 else 4748 gad->odd = 0; 4749 4750 /* If we're left with an unpaired GOT entry, compute its location 4751 such that we can return it. Otherwise, if got doesn't require an 4752 odd number of words here, either odd was already zero in the 4753 block above, or it was set to zero because got was non-zero, or 4754 got was already zero. In the latter case, we want the value of 4755 odd to carry over to the return statement, so we don't want to 4756 reset odd unless the condition below is true. */ 4757 if (got & 4) 4758 { 4759 odd = cur + got; 4760 got += 4; 4761 } 4762 4763 /* Compute the tentative boundaries of this range. */ 4764 gad->max = cur + got; 4765 gad->min = fdcur - fd; 4766 gad->fdplt = 0; 4767 4768 /* If function descriptors took too much space, wrap some of them 4769 around. */ 4770 if (gad->min < wrapmin) 4771 { 4772 gad->max += wrapmin - gad->min; 4773 gad->tmin = gad->min = wrapmin; 4774 } 4775 4776 /* If GOT entries took too much space, wrap some of them around. 4777 This may well cause gad->min to become lower than wrapmin. This 4778 will cause a relocation overflow later on, so we don't have to 4779 report it here . */ 4780 if ((bfd_vma) gad->max > wrap) 4781 { 4782 gad->min -= gad->max - wrap; 4783 gad->max = wrap; 4784 } 4785 4786 /* Add TLS descriptors. */ 4787 gad->tmax = gad->max + tlsd; 4788 gad->tmin = gad->min; 4789 gad->tlsdplt = 0; 4790 4791 /* If TLS descriptors took too much space, wrap an integral number 4792 of them around. */ 4793 if ((bfd_vma) gad->tmax > wrap) 4794 { 4795 bfd_vma wrapsize = gad->tmax - wrap; 4796 4797 wrapsize += tdescsz / 2; 4798 wrapsize &= ~ tdescsz / 2; 4799 4800 gad->tmin -= wrapsize; 4801 gad->tmax -= wrapsize; 4802 } 4803 4804 /* If there is space left and we have function descriptors 4805 referenced in PLT entries that could take advantage of shorter 4806 offsets, place them now. */ 4807 if (fdplt && gad->tmin > wrapmin) 4808 { 4809 bfd_vma fds; 4810 4811 if ((bfd_vma) (gad->tmin - wrapmin) < fdplt) 4812 fds = gad->tmin - wrapmin; 4813 else 4814 fds = fdplt; 4815 4816 fdplt -= fds; 4817 gad->min -= fds; 4818 gad->tmin -= fds; 4819 gad->fdplt += fds; 4820 } 4821 4822 /* If there is more space left, try to place some more function 4823 descriptors for PLT entries. */ 4824 if (fdplt && (bfd_vma) gad->tmax < wrap) 4825 { 4826 bfd_vma fds; 4827 4828 if ((bfd_vma) (wrap - gad->tmax) < fdplt) 4829 fds = wrap - gad->tmax; 4830 else 4831 fds = fdplt; 4832 4833 fdplt -= fds; 4834 gad->max += fds; 4835 gad->tmax += fds; 4836 gad->fdplt += fds; 4837 } 4838 4839 /* If there is space left and we have TLS descriptors referenced in 4840 PLT entries that could take advantage of shorter offsets, place 4841 them now. */ 4842 if (tlsdplt && gad->tmin > wrapmin) 4843 { 4844 bfd_vma tlsds; 4845 4846 if ((bfd_vma) (gad->tmin - wrapmin) < tlsdplt) 4847 tlsds = (gad->tmin - wrapmin) & ~ (tdescsz / 2); 4848 else 4849 tlsds = tlsdplt; 4850 4851 tlsdplt -= tlsds; 4852 gad->tmin -= tlsds; 4853 gad->tlsdplt += tlsds; 4854 } 4855 4856 /* If there is more space left, try to place some more TLS 4857 descriptors for PLT entries. Although we could try to fit an 4858 additional TLS descriptor with half of it just before before the 4859 wrap point and another right past the wrap point, this might 4860 cause us to run out of space for the next region, so don't do 4861 it. */ 4862 if (tlsdplt && (bfd_vma) gad->tmax < wrap - tdescsz / 2) 4863 { 4864 bfd_vma tlsds; 4865 4866 if ((bfd_vma) (wrap - gad->tmax) < tlsdplt) 4867 tlsds = (wrap - gad->tmax) & ~ (tdescsz / 2); 4868 else 4869 tlsds = tlsdplt; 4870 4871 tlsdplt -= tlsds; 4872 gad->tmax += tlsds; 4873 gad->tlsdplt += tlsds; 4874 } 4875 4876 /* If odd was initially computed as an offset past the wrap point, 4877 wrap it around. */ 4878 if (odd > gad->max) 4879 odd = gad->min + odd - gad->max; 4880 4881 /* _frvfdpic_get_got_entry() below will always wrap gad->cur if needed 4882 before returning, so do it here too. This guarantees that, 4883 should cur and fdcur meet at the wrap point, they'll both be 4884 equal to min. */ 4885 if (gad->cur == gad->max) 4886 gad->cur = gad->min; 4887 4888 /* Ditto for _frvfdpic_get_tlsdesc_entry(). */ 4889 gad->tcur = gad->max; 4890 if (gad->tcur == gad->tmax) 4891 gad->tcur = gad->tmin; 4892 4893 return odd; 4894 } 4895 4896 /* Compute the location of the next GOT entry, given the allocation 4897 data for a range. */ 4898 4899 inline static bfd_signed_vma 4900 _frvfdpic_get_got_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) 4901 { 4902 bfd_signed_vma ret; 4903 4904 if (gad->odd) 4905 { 4906 /* If there was an odd word left behind, use it. */ 4907 ret = gad->odd; 4908 gad->odd = 0; 4909 } 4910 else 4911 { 4912 /* Otherwise, use the word pointed to by cur, reserve the next 4913 as an odd word, and skip to the next pair of words, possibly 4914 wrapping around. */ 4915 ret = gad->cur; 4916 gad->odd = gad->cur + 4; 4917 gad->cur += 8; 4918 if (gad->cur == gad->max) 4919 gad->cur = gad->min; 4920 } 4921 4922 return ret; 4923 } 4924 4925 /* Compute the location of the next function descriptor entry in the 4926 GOT, given the allocation data for a range. */ 4927 4928 inline static bfd_signed_vma 4929 _frvfdpic_get_fd_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) 4930 { 4931 /* If we're at the bottom, wrap around, and only then allocate the 4932 next pair of words. */ 4933 if (gad->fdcur == gad->min) 4934 gad->fdcur = gad->max; 4935 return gad->fdcur -= 8; 4936 } 4937 4938 /* Compute the location of the next TLS descriptor entry in the GOT, 4939 given the allocation data for a range. */ 4940 inline static bfd_signed_vma 4941 _frvfdpic_get_tlsdesc_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) 4942 { 4943 bfd_signed_vma ret; 4944 4945 ret = gad->tcur; 4946 4947 gad->tcur += 8; 4948 4949 /* If we're at the top of the region, wrap around to the bottom. */ 4950 if (gad->tcur == gad->tmax) 4951 gad->tcur = gad->tmin; 4952 4953 return ret; 4954 } 4955 4956 /* Assign GOT offsets for every GOT entry and function descriptor. 4957 Doing everything in a single pass is tricky. */ 4958 4959 static int 4960 _frvfdpic_assign_got_entries (void **entryp, void *info_) 4961 { 4962 struct frvfdpic_relocs_info *entry = *entryp; 4963 struct _frvfdpic_dynamic_got_plt_info *dinfo = info_; 4964 4965 if (entry->got12) 4966 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->got12); 4967 else if (entry->gotlos) 4968 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); 4969 else if (entry->gothilo) 4970 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); 4971 4972 if (entry->fdgot12) 4973 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->got12); 4974 else if (entry->fdgotlos) 4975 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); 4976 else if (entry->fdgothilo) 4977 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); 4978 4979 if (entry->fdgoff12) 4980 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12); 4981 else if (entry->plt && dinfo->got12.fdplt) 4982 { 4983 dinfo->got12.fdplt -= 8; 4984 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12); 4985 } 4986 else if (entry->fdgofflos) 4987 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos); 4988 else if (entry->plt && dinfo->gotlos.fdplt) 4989 { 4990 dinfo->gotlos.fdplt -= 8; 4991 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos); 4992 } 4993 else if (entry->plt) 4994 { 4995 dinfo->gothilo.fdplt -= 8; 4996 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo); 4997 } 4998 else if (entry->privfd) 4999 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo); 5000 5001 if (entry->tlsoff12) 5002 entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->got12); 5003 else if (entry->tlsofflos) 5004 entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); 5005 else if (entry->tlsoffhilo) 5006 entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); 5007 5008 if (entry->tlsdesc12) 5009 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->got12); 5010 else if (entry->tlsplt && dinfo->got12.tlsdplt) 5011 { 5012 dinfo->got12.tlsdplt -= 8; 5013 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->got12); 5014 } 5015 else if (entry->tlsdesclos) 5016 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gotlos); 5017 else if (entry->tlsplt && dinfo->gotlos.tlsdplt) 5018 { 5019 dinfo->gotlos.tlsdplt -= 8; 5020 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gotlos); 5021 } 5022 else if (entry->tlsplt) 5023 { 5024 dinfo->gothilo.tlsdplt -= 8; 5025 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gothilo); 5026 } 5027 else if (entry->tlsdeschilo) 5028 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gothilo); 5029 5030 return 1; 5031 } 5032 5033 /* Assign GOT offsets to private function descriptors used by PLT 5034 entries (or referenced by 32-bit offsets), as well as PLT entries 5035 and lazy PLT entries. */ 5036 5037 static int 5038 _frvfdpic_assign_plt_entries (void **entryp, void *info_) 5039 { 5040 struct frvfdpic_relocs_info *entry = *entryp; 5041 struct _frvfdpic_dynamic_got_plt_info *dinfo = info_; 5042 5043 if (entry->privfd) 5044 BFD_ASSERT (entry->fd_entry); 5045 5046 if (entry->plt) 5047 { 5048 int size; 5049 5050 /* We use the section's raw size to mark the location of the 5051 next PLT entry. */ 5052 entry->plt_entry = frvfdpic_plt_section (dinfo->g.info)->size; 5053 5054 /* Figure out the length of this PLT entry based on the 5055 addressing mode we need to reach the function descriptor. */ 5056 BFD_ASSERT (entry->fd_entry); 5057 if (entry->fd_entry >= -(1 << (12 - 1)) 5058 && entry->fd_entry < (1 << (12 - 1))) 5059 size = 8; 5060 else if (entry->fd_entry >= -(1 << (16 - 1)) 5061 && entry->fd_entry < (1 << (16 - 1))) 5062 size = 12; 5063 else 5064 size = 16; 5065 5066 frvfdpic_plt_section (dinfo->g.info)->size += size; 5067 } 5068 5069 if (entry->lazyplt) 5070 { 5071 entry->lzplt_entry = dinfo->g.lzplt; 5072 dinfo->g.lzplt += 8; 5073 /* If this entry is the one that gets the resolver stub, account 5074 for the additional instruction. */ 5075 if (entry->lzplt_entry % FRVFDPIC_LZPLT_BLOCK_SIZE 5076 == FRVFDPIC_LZPLT_RESOLV_LOC) 5077 dinfo->g.lzplt += 4; 5078 } 5079 5080 if (entry->tlsplt) 5081 { 5082 int size; 5083 5084 entry->tlsplt_entry 5085 = frvfdpic_plt_section (dinfo->g.info)->size; 5086 5087 if (bfd_link_executable (dinfo->g.info) 5088 && (entry->symndx != -1 5089 || FRVFDPIC_SYM_LOCAL (dinfo->g.info, entry->d.h))) 5090 { 5091 if ((bfd_signed_vma)entry->addend >= -(1 << (16 - 1)) 5092 /* FIXME: here we use the size of the TLS section 5093 as an upper bound for the value of the TLS 5094 symbol, because we may not know the exact value 5095 yet. If we get it wrong, we'll just waste a 5096 word in the PLT, and we should never get even 5097 close to 32 KiB of TLS anyway. */ 5098 && elf_hash_table (dinfo->g.info)->tls_sec 5099 && (elf_hash_table (dinfo->g.info)->tls_sec->size 5100 + (bfd_signed_vma)(entry->addend) <= (1 << (16 - 1)))) 5101 size = 8; 5102 else 5103 size = 12; 5104 } 5105 else if (entry->tlsoff_entry) 5106 { 5107 if (entry->tlsoff_entry >= -(1 << (12 - 1)) 5108 && entry->tlsoff_entry < (1 << (12 - 1))) 5109 size = 8; 5110 else if (entry->tlsoff_entry >= -(1 << (16 - 1)) 5111 && entry->tlsoff_entry < (1 << (16 - 1))) 5112 size = 12; 5113 else 5114 size = 16; 5115 } 5116 else 5117 { 5118 BFD_ASSERT (entry->tlsdesc_entry); 5119 5120 if (entry->tlsdesc_entry >= -(1 << (12 - 1)) 5121 && entry->tlsdesc_entry < (1 << (12 - 1))) 5122 size = 8; 5123 else if (entry->tlsdesc_entry >= -(1 << (16 - 1)) 5124 && entry->tlsdesc_entry < (1 << (16 - 1))) 5125 size = 12; 5126 else 5127 size = 16; 5128 } 5129 5130 frvfdpic_plt_section (dinfo->g.info)->size += size; 5131 } 5132 5133 return 1; 5134 } 5135 5136 /* Cancel out any effects of calling _frvfdpic_assign_got_entries and 5137 _frvfdpic_assign_plt_entries. */ 5138 5139 static int 5140 _frvfdpic_reset_got_plt_entries (void **entryp, void *ignore ATTRIBUTE_UNUSED) 5141 { 5142 struct frvfdpic_relocs_info *entry = *entryp; 5143 5144 entry->got_entry = 0; 5145 entry->fdgot_entry = 0; 5146 entry->fd_entry = 0; 5147 entry->plt_entry = (bfd_vma)-1; 5148 entry->lzplt_entry = (bfd_vma)-1; 5149 entry->tlsoff_entry = 0; 5150 entry->tlsdesc_entry = 0; 5151 entry->tlsplt_entry = (bfd_vma)-1; 5152 5153 return 1; 5154 } 5155 5156 /* Follow indirect and warning hash entries so that each got entry 5157 points to the final symbol definition. P must point to a pointer 5158 to the hash table we're traversing. Since this traversal may 5159 modify the hash table, we set this pointer to NULL to indicate 5160 we've made a potentially-destructive change to the hash table, so 5161 the traversal must be restarted. */ 5162 static int 5163 _frvfdpic_resolve_final_relocs_info (void **entryp, void *p) 5164 { 5165 struct frvfdpic_relocs_info *entry = *entryp; 5166 htab_t *htab = p; 5167 5168 if (entry->symndx == -1) 5169 { 5170 struct elf_link_hash_entry *h = entry->d.h; 5171 struct frvfdpic_relocs_info *oentry; 5172 5173 while (h->root.type == bfd_link_hash_indirect 5174 || h->root.type == bfd_link_hash_warning) 5175 h = (struct elf_link_hash_entry *)h->root.u.i.link; 5176 5177 if (entry->d.h == h) 5178 return 1; 5179 5180 oentry = frvfdpic_relocs_info_for_global (*htab, 0, h, entry->addend, 5181 NO_INSERT); 5182 5183 if (oentry) 5184 { 5185 /* Merge the two entries. */ 5186 frvfdpic_pic_merge_early_relocs_info (oentry, entry); 5187 htab_clear_slot (*htab, entryp); 5188 return 1; 5189 } 5190 5191 entry->d.h = h; 5192 5193 /* If we can't find this entry with the new bfd hash, re-insert 5194 it, and get the traversal restarted. */ 5195 if (! htab_find (*htab, entry)) 5196 { 5197 htab_clear_slot (*htab, entryp); 5198 entryp = htab_find_slot (*htab, entry, INSERT); 5199 if (! *entryp) 5200 *entryp = entry; 5201 /* Abort the traversal, since the whole table may have 5202 moved, and leave it up to the parent to restart the 5203 process. */ 5204 *(htab_t *)p = NULL; 5205 return 0; 5206 } 5207 } 5208 5209 return 1; 5210 } 5211 5212 /* Compute the total size of the GOT, the PLT, the dynamic relocations 5213 section and the rofixup section. Assign locations for GOT and PLT 5214 entries. */ 5215 5216 static bfd_boolean 5217 _frvfdpic_size_got_plt (bfd *output_bfd, 5218 struct _frvfdpic_dynamic_got_plt_info *gpinfop) 5219 { 5220 bfd_signed_vma odd; 5221 bfd_vma limit, tlslimit; 5222 struct bfd_link_info *info = gpinfop->g.info; 5223 bfd *dynobj = elf_hash_table (info)->dynobj; 5224 5225 memcpy (frvfdpic_dynamic_got_plt_info (info), &gpinfop->g, 5226 sizeof (gpinfop->g)); 5227 5228 odd = 12; 5229 /* Compute the total size taken by entries in the 12-bit and 16-bit 5230 ranges, to tell how many PLT function descriptors we can bring 5231 into the 12-bit range without causing the 16-bit range to 5232 overflow. */ 5233 limit = odd + gpinfop->g.got12 + gpinfop->g.gotlos 5234 + gpinfop->g.fd12 + gpinfop->g.fdlos 5235 + gpinfop->g.tlsd12 + gpinfop->g.tlsdlos; 5236 if (limit < (bfd_vma)1 << 16) 5237 limit = ((bfd_vma)1 << 16) - limit; 5238 else 5239 limit = 0; 5240 if (gpinfop->g.fdplt < limit) 5241 { 5242 tlslimit = (limit - gpinfop->g.fdplt) & ~ (bfd_vma) 8; 5243 limit = gpinfop->g.fdplt; 5244 } 5245 else 5246 tlslimit = 0; 5247 if (gpinfop->g.tlsdplt < tlslimit) 5248 tlslimit = gpinfop->g.tlsdplt; 5249 5250 /* Determine the ranges of GOT offsets that we can use for each 5251 range of addressing modes. */ 5252 odd = _frvfdpic_compute_got_alloc_data (&gpinfop->got12, 5253 0, 5254 odd, 5255 16, 5256 gpinfop->g.got12, 5257 gpinfop->g.fd12, 5258 limit, 5259 gpinfop->g.tlsd12, 5260 tlslimit, 5261 (bfd_vma)1 << (12-1)); 5262 odd = _frvfdpic_compute_got_alloc_data (&gpinfop->gotlos, 5263 gpinfop->got12.tmin, 5264 odd, 5265 gpinfop->got12.tmax, 5266 gpinfop->g.gotlos, 5267 gpinfop->g.fdlos, 5268 gpinfop->g.fdplt 5269 - gpinfop->got12.fdplt, 5270 gpinfop->g.tlsdlos, 5271 gpinfop->g.tlsdplt 5272 - gpinfop->got12.tlsdplt, 5273 (bfd_vma)1 << (16-1)); 5274 odd = _frvfdpic_compute_got_alloc_data (&gpinfop->gothilo, 5275 gpinfop->gotlos.tmin, 5276 odd, 5277 gpinfop->gotlos.tmax, 5278 gpinfop->g.gothilo, 5279 gpinfop->g.fdhilo, 5280 gpinfop->g.fdplt 5281 - gpinfop->got12.fdplt 5282 - gpinfop->gotlos.fdplt, 5283 gpinfop->g.tlsdhilo, 5284 gpinfop->g.tlsdplt 5285 - gpinfop->got12.tlsdplt 5286 - gpinfop->gotlos.tlsdplt, 5287 (bfd_vma)1 << (32-1)); 5288 5289 /* Now assign (most) GOT offsets. */ 5290 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_got_entries, 5291 gpinfop); 5292 5293 frvfdpic_got_section (info)->size = gpinfop->gothilo.tmax 5294 - gpinfop->gothilo.tmin 5295 /* If an odd word is the last word of the GOT, we don't need this 5296 word to be part of the GOT. */ 5297 - (odd + 4 == gpinfop->gothilo.tmax ? 4 : 0); 5298 if (frvfdpic_got_section (info)->size == 0) 5299 frvfdpic_got_section (info)->flags |= SEC_EXCLUDE; 5300 else if (frvfdpic_got_section (info)->size == 12 5301 && ! elf_hash_table (info)->dynamic_sections_created) 5302 { 5303 frvfdpic_got_section (info)->flags |= SEC_EXCLUDE; 5304 frvfdpic_got_section (info)->size = 0; 5305 } 5306 /* This will be non-NULL during relaxation. The assumption is that 5307 the size of one of these sections will never grow, only shrink, 5308 so we can use the larger buffer we allocated before. */ 5309 else if (frvfdpic_got_section (info)->contents == NULL) 5310 { 5311 frvfdpic_got_section (info)->contents = 5312 (bfd_byte *) bfd_zalloc (dynobj, 5313 frvfdpic_got_section (info)->size); 5314 if (frvfdpic_got_section (info)->contents == NULL) 5315 return FALSE; 5316 } 5317 5318 if (frvfdpic_gotrel_section (info)) 5319 /* Subtract the number of lzplt entries, since those will generate 5320 relocations in the pltrel section. */ 5321 frvfdpic_gotrel_section (info)->size = 5322 (gpinfop->g.relocs - gpinfop->g.lzplt / 8) 5323 * get_elf_backend_data (output_bfd)->s->sizeof_rel; 5324 else 5325 BFD_ASSERT (gpinfop->g.relocs == 0); 5326 if (frvfdpic_gotrel_section (info)->size == 0) 5327 frvfdpic_gotrel_section (info)->flags |= SEC_EXCLUDE; 5328 else if (frvfdpic_gotrel_section (info)->contents == NULL) 5329 { 5330 frvfdpic_gotrel_section (info)->contents = 5331 (bfd_byte *) bfd_zalloc (dynobj, 5332 frvfdpic_gotrel_section (info)->size); 5333 if (frvfdpic_gotrel_section (info)->contents == NULL) 5334 return FALSE; 5335 } 5336 5337 frvfdpic_gotfixup_section (info)->size = (gpinfop->g.fixups + 1) * 4; 5338 if (frvfdpic_gotfixup_section (info)->size == 0) 5339 frvfdpic_gotfixup_section (info)->flags |= SEC_EXCLUDE; 5340 else if (frvfdpic_gotfixup_section (info)->contents == NULL) 5341 { 5342 frvfdpic_gotfixup_section (info)->contents = 5343 (bfd_byte *) bfd_zalloc (dynobj, 5344 frvfdpic_gotfixup_section (info)->size); 5345 if (frvfdpic_gotfixup_section (info)->contents == NULL) 5346 return FALSE; 5347 } 5348 5349 if (frvfdpic_pltrel_section (info)) 5350 { 5351 frvfdpic_pltrel_section (info)->size = 5352 gpinfop->g.lzplt / 8 5353 * get_elf_backend_data (output_bfd)->s->sizeof_rel; 5354 if (frvfdpic_pltrel_section (info)->size == 0) 5355 frvfdpic_pltrel_section (info)->flags |= SEC_EXCLUDE; 5356 else if (frvfdpic_pltrel_section (info)->contents == NULL) 5357 { 5358 frvfdpic_pltrel_section (info)->contents = 5359 (bfd_byte *) bfd_zalloc (dynobj, 5360 frvfdpic_pltrel_section (info)->size); 5361 if (frvfdpic_pltrel_section (info)->contents == NULL) 5362 return FALSE; 5363 } 5364 } 5365 5366 /* Add 4 bytes for every block of at most 65535 lazy PLT entries, 5367 such that there's room for the additional instruction needed to 5368 call the resolver. Since _frvfdpic_assign_got_entries didn't 5369 account for them, our block size is 4 bytes smaller than the real 5370 block size. */ 5371 if (frvfdpic_plt_section (info)) 5372 { 5373 frvfdpic_plt_section (info)->size = gpinfop->g.lzplt 5374 + ((gpinfop->g.lzplt + (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) - 8) 5375 / (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) * 4); 5376 } 5377 5378 /* Reset it, such that _frvfdpic_assign_plt_entries() can use it to 5379 actually assign lazy PLT entries addresses. */ 5380 gpinfop->g.lzplt = 0; 5381 5382 /* Save information that we're going to need to generate GOT and PLT 5383 entries. */ 5384 frvfdpic_got_initial_offset (info) = -gpinfop->gothilo.tmin; 5385 5386 if (get_elf_backend_data (output_bfd)->want_got_sym) 5387 elf_hash_table (info)->hgot->root.u.def.value 5388 = frvfdpic_got_initial_offset (info); 5389 5390 if (frvfdpic_plt_section (info)) 5391 frvfdpic_plt_initial_offset (info) = 5392 frvfdpic_plt_section (info)->size; 5393 5394 /* Allocate a ret statement at plt_initial_offset, to be used by 5395 locally-resolved TLS descriptors. */ 5396 if (gpinfop->g.tls_ret_refs) 5397 frvfdpic_plt_section (info)->size += 4; 5398 5399 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_plt_entries, 5400 gpinfop); 5401 5402 /* Allocate the PLT section contents only after 5403 _frvfdpic_assign_plt_entries has a chance to add the size of the 5404 non-lazy PLT entries. */ 5405 if (frvfdpic_plt_section (info)) 5406 { 5407 if (frvfdpic_plt_section (info)->size == 0) 5408 frvfdpic_plt_section (info)->flags |= SEC_EXCLUDE; 5409 else if (frvfdpic_plt_section (info)->contents == NULL) 5410 { 5411 frvfdpic_plt_section (info)->contents = 5412 (bfd_byte *) bfd_zalloc (dynobj, 5413 frvfdpic_plt_section (info)->size); 5414 if (frvfdpic_plt_section (info)->contents == NULL) 5415 return FALSE; 5416 } 5417 } 5418 5419 return TRUE; 5420 } 5421 5422 /* Set the sizes of the dynamic sections. */ 5423 5424 static bfd_boolean 5425 elf32_frvfdpic_size_dynamic_sections (bfd *output_bfd, 5426 struct bfd_link_info *info) 5427 { 5428 bfd *dynobj; 5429 asection *s; 5430 struct _frvfdpic_dynamic_got_plt_info gpinfo; 5431 5432 dynobj = elf_hash_table (info)->dynobj; 5433 BFD_ASSERT (dynobj != NULL); 5434 5435 if (elf_hash_table (info)->dynamic_sections_created) 5436 { 5437 /* Set the contents of the .interp section to the interpreter. */ 5438 if (bfd_link_executable (info) && !info->nointerp) 5439 { 5440 s = bfd_get_linker_section (dynobj, ".interp"); 5441 BFD_ASSERT (s != NULL); 5442 s->size = sizeof ELF_DYNAMIC_INTERPRETER; 5443 s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; 5444 } 5445 } 5446 5447 memset (&gpinfo, 0, sizeof (gpinfo)); 5448 gpinfo.g.info = info; 5449 5450 for (;;) 5451 { 5452 htab_t relocs = frvfdpic_relocs_info (info); 5453 5454 htab_traverse (relocs, _frvfdpic_resolve_final_relocs_info, &relocs); 5455 5456 if (relocs == frvfdpic_relocs_info (info)) 5457 break; 5458 } 5459 5460 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_count_got_plt_entries, 5461 &gpinfo.g); 5462 5463 /* Allocate space to save the summary information, we're going to 5464 use it if we're doing relaxations. */ 5465 frvfdpic_dynamic_got_plt_info (info) = bfd_alloc (dynobj, sizeof (gpinfo.g)); 5466 5467 if (!_frvfdpic_size_got_plt (output_bfd, &gpinfo)) 5468 return FALSE; 5469 5470 if (elf_hash_table (info)->dynamic_sections_created) 5471 { 5472 if (frvfdpic_got_section (info)->size) 5473 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)) 5474 return FALSE; 5475 5476 if (frvfdpic_pltrel_section (info)->size) 5477 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) 5478 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_REL) 5479 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) 5480 return FALSE; 5481 5482 if (frvfdpic_gotrel_section (info)->size) 5483 if (!_bfd_elf_add_dynamic_entry (info, DT_REL, 0) 5484 || !_bfd_elf_add_dynamic_entry (info, DT_RELSZ, 0) 5485 || !_bfd_elf_add_dynamic_entry (info, DT_RELENT, 5486 sizeof (Elf32_External_Rel))) 5487 return FALSE; 5488 } 5489 5490 return TRUE; 5491 } 5492 5493 static bfd_boolean 5494 elf32_frvfdpic_always_size_sections (bfd *output_bfd, 5495 struct bfd_link_info *info) 5496 { 5497 if (!bfd_link_relocatable (info) 5498 && !bfd_elf_stack_segment_size (output_bfd, info, 5499 "__stacksize", DEFAULT_STACK_SIZE)) 5500 return FALSE; 5501 5502 return TRUE; 5503 } 5504 5505 /* Check whether any of the relocations was optimized away, and 5506 subtract it from the relocation or fixup count. */ 5507 static bfd_boolean 5508 _frvfdpic_check_discarded_relocs (bfd *abfd, asection *sec, 5509 struct bfd_link_info *info, 5510 5511 bfd_boolean *changed) 5512 { 5513 Elf_Internal_Shdr *symtab_hdr; 5514 struct elf_link_hash_entry **sym_hashes; 5515 Elf_Internal_Rela *rel, *erel; 5516 5517 if ((sec->flags & SEC_RELOC) == 0 5518 || sec->reloc_count == 0) 5519 return TRUE; 5520 5521 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 5522 sym_hashes = elf_sym_hashes (abfd); 5523 5524 rel = elf_section_data (sec)->relocs; 5525 5526 /* Now examine each relocation. */ 5527 for (erel = rel + sec->reloc_count; rel < erel; rel++) 5528 { 5529 struct elf_link_hash_entry *h; 5530 unsigned long r_symndx; 5531 struct frvfdpic_relocs_info *picrel; 5532 struct _frvfdpic_dynamic_got_info *dinfo; 5533 5534 if (ELF32_R_TYPE (rel->r_info) != R_FRV_32 5535 && ELF32_R_TYPE (rel->r_info) != R_FRV_FUNCDESC) 5536 continue; 5537 5538 if (_bfd_elf_section_offset (sec->output_section->owner, 5539 info, sec, rel->r_offset) 5540 != (bfd_vma)-1) 5541 continue; 5542 5543 r_symndx = ELF32_R_SYM (rel->r_info); 5544 if (r_symndx < symtab_hdr->sh_info) 5545 h = NULL; 5546 else 5547 { 5548 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 5549 while (h->root.type == bfd_link_hash_indirect 5550 || h->root.type == bfd_link_hash_warning) 5551 h = (struct elf_link_hash_entry *)h->root.u.i.link; 5552 } 5553 5554 if (h != NULL) 5555 picrel = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info (info), 5556 abfd, h, 5557 rel->r_addend, NO_INSERT); 5558 else 5559 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info (info), 5560 abfd, r_symndx, 5561 rel->r_addend, NO_INSERT); 5562 5563 if (! picrel) 5564 return FALSE; 5565 5566 *changed = TRUE; 5567 dinfo = frvfdpic_dynamic_got_plt_info (info); 5568 5569 _frvfdpic_count_relocs_fixups (picrel, dinfo, TRUE); 5570 if (ELF32_R_TYPE (rel->r_info) == R_FRV_32) 5571 picrel->relocs32--; 5572 else /* we know (ELF32_R_TYPE (rel->r_info) == R_FRV_FUNCDESC) */ 5573 picrel->relocsfd--; 5574 _frvfdpic_count_relocs_fixups (picrel, dinfo, FALSE); 5575 } 5576 5577 return TRUE; 5578 } 5579 5580 static bfd_boolean 5581 frvfdpic_elf_discard_info (bfd *ibfd, 5582 struct elf_reloc_cookie *cookie ATTRIBUTE_UNUSED, 5583 struct bfd_link_info *info) 5584 { 5585 bfd_boolean changed = FALSE; 5586 asection *s; 5587 bfd *obfd = NULL; 5588 5589 /* Account for relaxation of .eh_frame section. */ 5590 for (s = ibfd->sections; s; s = s->next) 5591 if (s->sec_info_type == SEC_INFO_TYPE_EH_FRAME) 5592 { 5593 if (!_frvfdpic_check_discarded_relocs (ibfd, s, info, &changed)) 5594 return FALSE; 5595 obfd = s->output_section->owner; 5596 } 5597 5598 if (changed) 5599 { 5600 struct _frvfdpic_dynamic_got_plt_info gpinfo; 5601 5602 memset (&gpinfo, 0, sizeof (gpinfo)); 5603 memcpy (&gpinfo.g, frvfdpic_dynamic_got_plt_info (info), 5604 sizeof (gpinfo.g)); 5605 5606 /* Clear GOT and PLT assignments. */ 5607 htab_traverse (frvfdpic_relocs_info (info), 5608 _frvfdpic_reset_got_plt_entries, 5609 NULL); 5610 5611 if (!_frvfdpic_size_got_plt (obfd, &gpinfo)) 5612 return FALSE; 5613 } 5614 5615 return TRUE; 5616 } 5617 5618 /* Look for opportunities to relax TLS relocations. We can assume 5619 we're linking the main executable or a static-tls library, since 5620 otherwise we wouldn't have got here. */ 5621 5622 static int 5623 _frvfdpic_relax_got_plt_entries (void **entryp, void *dinfo_) 5624 { 5625 struct frvfdpic_relocs_info *entry = *entryp; 5626 struct _frvfdpic_dynamic_got_info *dinfo = dinfo_; 5627 5628 _frvfdpic_relax_tls_entries (entry, dinfo, TRUE); 5629 5630 return 1; 5631 } 5632 5633 static bfd_boolean 5634 elf32_frvfdpic_relax_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, 5635 struct bfd_link_info *info, bfd_boolean *again) 5636 { 5637 struct _frvfdpic_dynamic_got_plt_info gpinfo; 5638 5639 if (bfd_link_relocatable (info)) 5640 (*info->callbacks->einfo) 5641 (_("%P%F: --relax and -r may not be used together\n")); 5642 5643 /* If we return early, we didn't change anything. */ 5644 *again = FALSE; 5645 5646 /* We'll do our thing when requested to relax the GOT section. */ 5647 if (sec != frvfdpic_got_section (info)) 5648 return TRUE; 5649 5650 /* We can only relax when linking the main executable or a library 5651 that can't be dlopened. */ 5652 if (! bfd_link_executable (info) && ! (info->flags & DF_STATIC_TLS)) 5653 return TRUE; 5654 5655 /* If there isn't a TLS section for this binary, we can't do 5656 anything about its TLS relocations (it probably doesn't have 5657 any. */ 5658 if (elf_hash_table (info)->tls_sec == NULL) 5659 return TRUE; 5660 5661 memset (&gpinfo, 0, sizeof (gpinfo)); 5662 memcpy (&gpinfo.g, frvfdpic_dynamic_got_plt_info (info), sizeof (gpinfo.g)); 5663 5664 /* Now look for opportunities to relax, adjusting the GOT usage 5665 as needed. */ 5666 htab_traverse (frvfdpic_relocs_info (info), 5667 _frvfdpic_relax_got_plt_entries, 5668 &gpinfo.g); 5669 5670 /* If we changed anything, reset and re-assign GOT and PLT entries. */ 5671 if (memcmp (frvfdpic_dynamic_got_plt_info (info), 5672 &gpinfo.g, sizeof (gpinfo.g)) != 0) 5673 { 5674 /* Clear GOT and PLT assignments. */ 5675 htab_traverse (frvfdpic_relocs_info (info), 5676 _frvfdpic_reset_got_plt_entries, 5677 NULL); 5678 5679 /* The owner of the TLS section is the output bfd. There should 5680 be a better way to get to it. */ 5681 if (!_frvfdpic_size_got_plt (elf_hash_table (info)->tls_sec->owner, 5682 &gpinfo)) 5683 return FALSE; 5684 5685 /* Repeat until we don't make any further changes. We could fail to 5686 introduce changes in a round if, for example, the 12-bit range is 5687 full, but we later release some space by getting rid of TLS 5688 descriptors in it. We have to repeat the whole process because 5689 we might have changed the size of a section processed before this 5690 one. */ 5691 *again = TRUE; 5692 } 5693 5694 return TRUE; 5695 } 5696 5697 /* Fill in code and data in dynamic sections. */ 5698 5699 static bfd_boolean 5700 elf32_frv_finish_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 5701 struct bfd_link_info *info ATTRIBUTE_UNUSED) 5702 { 5703 /* Nothing to be done for non-FDPIC. */ 5704 return TRUE; 5705 } 5706 5707 static bfd_boolean 5708 elf32_frvfdpic_finish_dynamic_sections (bfd *output_bfd, 5709 struct bfd_link_info *info) 5710 { 5711 bfd *dynobj; 5712 asection *sdyn; 5713 5714 dynobj = elf_hash_table (info)->dynobj; 5715 5716 if (frvfdpic_dynamic_got_plt_info (info)) 5717 { 5718 BFD_ASSERT (frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs == 0); 5719 } 5720 if (frvfdpic_got_section (info)) 5721 { 5722 BFD_ASSERT (frvfdpic_gotrel_section (info)->size 5723 == (frvfdpic_gotrel_section (info)->reloc_count 5724 * sizeof (Elf32_External_Rel))); 5725 5726 if (frvfdpic_gotfixup_section (info)) 5727 { 5728 struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot; 5729 bfd_vma got_value = hgot->root.u.def.value 5730 + hgot->root.u.def.section->output_section->vma 5731 + hgot->root.u.def.section->output_offset; 5732 struct bfd_link_hash_entry *hend; 5733 5734 _frvfdpic_add_rofixup (output_bfd, frvfdpic_gotfixup_section (info), 5735 got_value, 0); 5736 5737 if (frvfdpic_gotfixup_section (info)->size 5738 != (frvfdpic_gotfixup_section (info)->reloc_count * 4)) 5739 { 5740 error: 5741 info->callbacks->einfo 5742 ("LINKER BUG: .rofixup section size mismatch\n"); 5743 return FALSE; 5744 } 5745 5746 hend = bfd_link_hash_lookup (info->hash, "__ROFIXUP_END__", 5747 FALSE, FALSE, TRUE); 5748 if (hend 5749 && (hend->type == bfd_link_hash_defined 5750 || hend->type == bfd_link_hash_defweak) 5751 && hend->u.def.section->output_section != NULL) 5752 { 5753 bfd_vma value = 5754 frvfdpic_gotfixup_section (info)->output_section->vma 5755 + frvfdpic_gotfixup_section (info)->output_offset 5756 + frvfdpic_gotfixup_section (info)->size 5757 - hend->u.def.section->output_section->vma 5758 - hend->u.def.section->output_offset; 5759 BFD_ASSERT (hend->u.def.value == value); 5760 if (hend->u.def.value != value) 5761 goto error; 5762 } 5763 } 5764 } 5765 if (frvfdpic_pltrel_section (info)) 5766 { 5767 BFD_ASSERT (frvfdpic_pltrel_section (info)->size 5768 == (frvfdpic_pltrel_section (info)->reloc_count 5769 * sizeof (Elf32_External_Rel))); 5770 } 5771 5772 5773 if (elf_hash_table (info)->dynamic_sections_created) 5774 { 5775 Elf32_External_Dyn * dyncon; 5776 Elf32_External_Dyn * dynconend; 5777 5778 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 5779 5780 BFD_ASSERT (sdyn != NULL); 5781 5782 dyncon = (Elf32_External_Dyn *) sdyn->contents; 5783 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); 5784 5785 for (; dyncon < dynconend; dyncon++) 5786 { 5787 Elf_Internal_Dyn dyn; 5788 5789 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 5790 5791 switch (dyn.d_tag) 5792 { 5793 default: 5794 break; 5795 5796 case DT_PLTGOT: 5797 dyn.d_un.d_ptr = frvfdpic_got_section (info)->output_section->vma 5798 + frvfdpic_got_section (info)->output_offset 5799 + frvfdpic_got_initial_offset (info); 5800 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 5801 break; 5802 5803 case DT_JMPREL: 5804 dyn.d_un.d_ptr = frvfdpic_pltrel_section (info) 5805 ->output_section->vma 5806 + frvfdpic_pltrel_section (info)->output_offset; 5807 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 5808 break; 5809 5810 case DT_PLTRELSZ: 5811 dyn.d_un.d_val = frvfdpic_pltrel_section (info)->size; 5812 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 5813 break; 5814 } 5815 } 5816 } 5817 5818 return TRUE; 5819 } 5820 5821 /* Adjust a symbol defined by a dynamic object and referenced by a 5822 regular object. */ 5823 5824 static bfd_boolean 5825 elf32_frvfdpic_adjust_dynamic_symbol 5826 (struct bfd_link_info *info ATTRIBUTE_UNUSED, 5827 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) 5828 { 5829 bfd * dynobj; 5830 5831 dynobj = elf_hash_table (info)->dynobj; 5832 5833 /* Make sure we know what is going on here. */ 5834 BFD_ASSERT (dynobj != NULL 5835 && (h->is_weakalias 5836 || (h->def_dynamic 5837 && h->ref_regular 5838 && !h->def_regular))); 5839 5840 /* If this is a weak symbol, and there is a real definition, the 5841 processor independent code will have arranged for us to see the 5842 real definition first, and we can just use the same value. */ 5843 if (h->is_weakalias) 5844 { 5845 struct elf_link_hash_entry *def = weakdef (h); 5846 BFD_ASSERT (def->root.type == bfd_link_hash_defined); 5847 h->root.u.def.section = def->root.u.def.section; 5848 h->root.u.def.value = def->root.u.def.value; 5849 return TRUE; 5850 } 5851 5852 return TRUE; 5853 } 5854 5855 /* Perform any actions needed for dynamic symbols. */ 5856 5857 static bfd_boolean 5858 elf32_frvfdpic_finish_dynamic_symbol 5859 (bfd *output_bfd ATTRIBUTE_UNUSED, 5860 struct bfd_link_info *info ATTRIBUTE_UNUSED, 5861 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED, 5862 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) 5863 { 5864 return TRUE; 5865 } 5866 5867 /* Decide whether to attempt to turn absptr or lsda encodings in 5868 shared libraries into pcrel within the given input section. */ 5869 5870 static bfd_boolean 5871 frvfdpic_elf_use_relative_eh_frame 5872 (bfd *input_bfd ATTRIBUTE_UNUSED, 5873 struct bfd_link_info *info ATTRIBUTE_UNUSED, 5874 asection *eh_frame_section ATTRIBUTE_UNUSED) 5875 { 5876 /* We can't use PC-relative encodings in FDPIC binaries, in general. */ 5877 return FALSE; 5878 } 5879 5880 /* Adjust the contents of an eh_frame_hdr section before they're output. */ 5881 5882 static bfd_byte 5883 frvfdpic_elf_encode_eh_address (bfd *abfd, 5884 struct bfd_link_info *info, 5885 asection *osec, bfd_vma offset, 5886 asection *loc_sec, bfd_vma loc_offset, 5887 bfd_vma *encoded) 5888 { 5889 struct elf_link_hash_entry *h; 5890 5891 h = elf_hash_table (info)->hgot; 5892 BFD_ASSERT (h && h->root.type == bfd_link_hash_defined); 5893 5894 if (! h || (_frvfdpic_osec_to_segment (abfd, osec) 5895 == _frvfdpic_osec_to_segment (abfd, loc_sec->output_section))) 5896 return _bfd_elf_encode_eh_address (abfd, info, osec, offset, 5897 loc_sec, loc_offset, encoded); 5898 5899 BFD_ASSERT (_frvfdpic_osec_to_segment (abfd, osec) 5900 == (_frvfdpic_osec_to_segment 5901 (abfd, h->root.u.def.section->output_section))); 5902 5903 *encoded = osec->vma + offset 5904 - (h->root.u.def.value 5905 + h->root.u.def.section->output_section->vma 5906 + h->root.u.def.section->output_offset); 5907 5908 return DW_EH_PE_datarel | DW_EH_PE_sdata4; 5909 } 5910 5911 /* Look through the relocs for a section during the first phase. 5912 5913 Besides handling virtual table relocs for gc, we have to deal with 5914 all sorts of PIC-related relocations. We describe below the 5915 general plan on how to handle such relocations, even though we only 5916 collect information at this point, storing them in hash tables for 5917 perusal of later passes. 5918 5919 32 relocations are propagated to the linker output when creating 5920 position-independent output. LO16 and HI16 relocations are not 5921 supposed to be encountered in this case. 5922 5923 LABEL16 should always be resolvable by the linker, since it's only 5924 used by branches. 5925 5926 LABEL24, on the other hand, is used by calls. If it turns out that 5927 the target of a call is a dynamic symbol, a PLT entry must be 5928 created for it, which triggers the creation of a private function 5929 descriptor and, unless lazy binding is disabled, a lazy PLT entry. 5930 5931 GPREL relocations require the referenced symbol to be in the same 5932 segment as _gp, but this can only be checked later. 5933 5934 All GOT, GOTOFF and FUNCDESC relocations require a .got section to 5935 exist. LABEL24 might as well, since it may require a PLT entry, 5936 that will require a got. 5937 5938 Non-FUNCDESC GOT relocations require a GOT entry to be created 5939 regardless of whether the symbol is dynamic. However, since a 5940 global symbol that turns out to not be exported may have the same 5941 address of a non-dynamic symbol, we don't assign GOT entries at 5942 this point, such that we can share them in this case. A relocation 5943 for the GOT entry always has to be created, be it to offset a 5944 private symbol by the section load address, be it to get the symbol 5945 resolved dynamically. 5946 5947 FUNCDESC GOT relocations require a GOT entry to be created, and 5948 handled as if a FUNCDESC relocation was applied to the GOT entry in 5949 an object file. 5950 5951 FUNCDESC relocations referencing a symbol that turns out to NOT be 5952 dynamic cause a private function descriptor to be created. The 5953 FUNCDESC relocation then decays to a 32 relocation that points at 5954 the private descriptor. If the symbol is dynamic, the FUNCDESC 5955 relocation is propagated to the linker output, such that the 5956 dynamic linker creates the canonical descriptor, pointing to the 5957 dynamically-resolved definition of the function. 5958 5959 Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic 5960 symbols that are assigned to the same segment as the GOT, but we 5961 can only check this later, after we know the complete set of 5962 symbols defined and/or exported. 5963 5964 FUNCDESC GOTOFF relocations require a function descriptor to be 5965 created and, unless lazy binding is disabled or the symbol is not 5966 dynamic, a lazy PLT entry. Since we can't tell at this point 5967 whether a symbol is going to be dynamic, we have to decide later 5968 whether to create a lazy PLT entry or bind the descriptor directly 5969 to the private function. 5970 5971 FUNCDESC_VALUE relocations are not supposed to be present in object 5972 files, but they may very well be simply propagated to the linker 5973 output, since they have no side effect. 5974 5975 5976 A function descriptor always requires a FUNCDESC_VALUE relocation. 5977 Whether it's in .plt.rel or not depends on whether lazy binding is 5978 enabled and on whether the referenced symbol is dynamic. 5979 5980 The existence of a lazy PLT requires the resolverStub lazy PLT 5981 entry to be present. 5982 5983 5984 As for assignment of GOT, PLT and lazy PLT entries, and private 5985 descriptors, we might do them all sequentially, but we can do 5986 better than that. For example, we can place GOT entries and 5987 private function descriptors referenced using 12-bit operands 5988 closer to the PIC register value, such that these relocations don't 5989 overflow. Those that are only referenced with LO16 relocations 5990 could come next, but we may as well place PLT-required function 5991 descriptors in the 12-bit range to make them shorter. Symbols 5992 referenced with LO16/HI16 may come next, but we may place 5993 additional function descriptors in the 16-bit range if we can 5994 reliably tell that we've already placed entries that are ever 5995 referenced with only LO16. PLT entries are therefore generated as 5996 small as possible, while not introducing relocation overflows in 5997 GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be 5998 generated before or after PLT entries, but not intermingled with 5999 them, such that we can have more lazy PLT entries in range for a 6000 branch to the resolverStub. The resolverStub should be emitted at 6001 the most distant location from the first lazy PLT entry such that 6002 it's still in range for a branch, or closer, if there isn't a need 6003 for so many lazy PLT entries. Additional lazy PLT entries may be 6004 emitted after the resolverStub, as long as branches are still in 6005 range. If the branch goes out of range, longer lazy PLT entries 6006 are emitted. 6007 6008 We could further optimize PLT and lazy PLT entries by giving them 6009 priority in assignment to closer-to-gr17 locations depending on the 6010 number of occurrences of references to them (assuming a function 6011 that's called more often is more important for performance, so its 6012 PLT entry should be faster), or taking hints from the compiler. 6013 Given infinite time and money... :-) */ 6014 6015 static bfd_boolean 6016 elf32_frv_check_relocs (bfd *abfd, 6017 struct bfd_link_info *info, 6018 asection *sec, 6019 const Elf_Internal_Rela *relocs) 6020 { 6021 Elf_Internal_Shdr *symtab_hdr; 6022 struct elf_link_hash_entry **sym_hashes; 6023 const Elf_Internal_Rela *rel; 6024 const Elf_Internal_Rela *rel_end; 6025 bfd *dynobj; 6026 struct frvfdpic_relocs_info *picrel; 6027 6028 if (bfd_link_relocatable (info)) 6029 return TRUE; 6030 6031 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 6032 sym_hashes = elf_sym_hashes (abfd); 6033 6034 dynobj = elf_hash_table (info)->dynobj; 6035 rel_end = relocs + sec->reloc_count; 6036 for (rel = relocs; rel < rel_end; rel++) 6037 { 6038 struct elf_link_hash_entry *h; 6039 unsigned long r_symndx; 6040 6041 r_symndx = ELF32_R_SYM (rel->r_info); 6042 if (r_symndx < symtab_hdr->sh_info) 6043 h = NULL; 6044 else 6045 { 6046 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 6047 while (h->root.type == bfd_link_hash_indirect 6048 || h->root.type == bfd_link_hash_warning) 6049 h = (struct elf_link_hash_entry *) h->root.u.i.link; 6050 } 6051 6052 switch (ELF32_R_TYPE (rel->r_info)) 6053 { 6054 case R_FRV_GETTLSOFF: 6055 case R_FRV_TLSDESC_VALUE: 6056 case R_FRV_GOTTLSDESC12: 6057 case R_FRV_GOTTLSDESCHI: 6058 case R_FRV_GOTTLSDESCLO: 6059 case R_FRV_GOTTLSOFF12: 6060 case R_FRV_GOTTLSOFFHI: 6061 case R_FRV_GOTTLSOFFLO: 6062 case R_FRV_TLSOFF: 6063 case R_FRV_GOT12: 6064 case R_FRV_GOTHI: 6065 case R_FRV_GOTLO: 6066 case R_FRV_FUNCDESC_GOT12: 6067 case R_FRV_FUNCDESC_GOTHI: 6068 case R_FRV_FUNCDESC_GOTLO: 6069 case R_FRV_GOTOFF12: 6070 case R_FRV_GOTOFFHI: 6071 case R_FRV_GOTOFFLO: 6072 case R_FRV_FUNCDESC_GOTOFF12: 6073 case R_FRV_FUNCDESC_GOTOFFHI: 6074 case R_FRV_FUNCDESC_GOTOFFLO: 6075 case R_FRV_FUNCDESC: 6076 case R_FRV_FUNCDESC_VALUE: 6077 case R_FRV_TLSMOFF12: 6078 case R_FRV_TLSMOFFHI: 6079 case R_FRV_TLSMOFFLO: 6080 case R_FRV_TLSMOFF: 6081 if (! IS_FDPIC (abfd)) 6082 goto bad_reloc; 6083 /* Fall through. */ 6084 case R_FRV_GPREL12: 6085 case R_FRV_GPRELU12: 6086 case R_FRV_GPRELHI: 6087 case R_FRV_GPRELLO: 6088 case R_FRV_LABEL24: 6089 case R_FRV_32: 6090 if (! dynobj) 6091 { 6092 elf_hash_table (info)->dynobj = dynobj = abfd; 6093 if (! _frv_create_got_section (abfd, info)) 6094 return FALSE; 6095 } 6096 if (! IS_FDPIC (abfd)) 6097 { 6098 picrel = NULL; 6099 break; 6100 } 6101 if (h != NULL) 6102 { 6103 if (h->dynindx == -1) 6104 switch (ELF_ST_VISIBILITY (h->other)) 6105 { 6106 case STV_INTERNAL: 6107 case STV_HIDDEN: 6108 break; 6109 default: 6110 bfd_elf_link_record_dynamic_symbol (info, h); 6111 break; 6112 } 6113 picrel 6114 = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info (info), 6115 abfd, h, 6116 rel->r_addend, INSERT); 6117 } 6118 else 6119 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info 6120 (info), abfd, r_symndx, 6121 rel->r_addend, INSERT); 6122 if (! picrel) 6123 return FALSE; 6124 break; 6125 6126 default: 6127 picrel = NULL; 6128 break; 6129 } 6130 6131 switch (ELF32_R_TYPE (rel->r_info)) 6132 { 6133 case R_FRV_LABEL24: 6134 if (IS_FDPIC (abfd)) 6135 picrel->call = 1; 6136 break; 6137 6138 case R_FRV_FUNCDESC_VALUE: 6139 picrel->relocsfdv++; 6140 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) 6141 picrel->relocs32--; 6142 /* Fall through. */ 6143 6144 case R_FRV_32: 6145 if (! IS_FDPIC (abfd)) 6146 break; 6147 6148 picrel->sym = 1; 6149 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) 6150 picrel->relocs32++; 6151 break; 6152 6153 case R_FRV_GOT12: 6154 picrel->got12 = 1; 6155 break; 6156 6157 case R_FRV_GOTHI: 6158 case R_FRV_GOTLO: 6159 picrel->gothilo = 1; 6160 break; 6161 6162 case R_FRV_FUNCDESC_GOT12: 6163 picrel->fdgot12 = 1; 6164 break; 6165 6166 case R_FRV_FUNCDESC_GOTHI: 6167 case R_FRV_FUNCDESC_GOTLO: 6168 picrel->fdgothilo = 1; 6169 break; 6170 6171 case R_FRV_GOTOFF12: 6172 case R_FRV_GOTOFFHI: 6173 case R_FRV_GOTOFFLO: 6174 picrel->gotoff = 1; 6175 break; 6176 6177 case R_FRV_FUNCDESC_GOTOFF12: 6178 picrel->fdgoff12 = 1; 6179 break; 6180 6181 case R_FRV_FUNCDESC_GOTOFFHI: 6182 case R_FRV_FUNCDESC_GOTOFFLO: 6183 picrel->fdgoffhilo = 1; 6184 break; 6185 6186 case R_FRV_FUNCDESC: 6187 picrel->fd = 1; 6188 picrel->relocsfd++; 6189 break; 6190 6191 case R_FRV_GETTLSOFF: 6192 picrel->tlsplt = 1; 6193 break; 6194 6195 case R_FRV_TLSDESC_VALUE: 6196 picrel->relocstlsd++; 6197 goto bad_reloc; 6198 6199 case R_FRV_GOTTLSDESC12: 6200 picrel->tlsdesc12 = 1; 6201 break; 6202 6203 case R_FRV_GOTTLSDESCHI: 6204 case R_FRV_GOTTLSDESCLO: 6205 picrel->tlsdeschilo = 1; 6206 break; 6207 6208 case R_FRV_TLSMOFF12: 6209 case R_FRV_TLSMOFFHI: 6210 case R_FRV_TLSMOFFLO: 6211 case R_FRV_TLSMOFF: 6212 break; 6213 6214 case R_FRV_GOTTLSOFF12: 6215 picrel->tlsoff12 = 1; 6216 info->flags |= DF_STATIC_TLS; 6217 break; 6218 6219 case R_FRV_GOTTLSOFFHI: 6220 case R_FRV_GOTTLSOFFLO: 6221 picrel->tlsoffhilo = 1; 6222 info->flags |= DF_STATIC_TLS; 6223 break; 6224 6225 case R_FRV_TLSOFF: 6226 picrel->relocstlsoff++; 6227 info->flags |= DF_STATIC_TLS; 6228 goto bad_reloc; 6229 6230 /* This relocation describes the C++ object vtable hierarchy. 6231 Reconstruct it for later use during GC. */ 6232 case R_FRV_GNU_VTINHERIT: 6233 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 6234 return FALSE; 6235 break; 6236 6237 /* This relocation describes which C++ vtable entries are actually 6238 used. Record for later use during GC. */ 6239 case R_FRV_GNU_VTENTRY: 6240 BFD_ASSERT (h != NULL); 6241 if (h != NULL 6242 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 6243 return FALSE; 6244 break; 6245 6246 case R_FRV_LABEL16: 6247 case R_FRV_LO16: 6248 case R_FRV_HI16: 6249 case R_FRV_GPREL12: 6250 case R_FRV_GPRELU12: 6251 case R_FRV_GPREL32: 6252 case R_FRV_GPRELHI: 6253 case R_FRV_GPRELLO: 6254 case R_FRV_TLSDESC_RELAX: 6255 case R_FRV_GETTLSOFF_RELAX: 6256 case R_FRV_TLSOFF_RELAX: 6257 break; 6258 6259 default: 6260 bad_reloc: 6261 /* xgettext:c-format */ 6262 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), 6263 abfd, (unsigned int) ELF32_R_TYPE (rel->r_info)); 6264 return FALSE; 6265 } 6266 } 6267 6268 return TRUE; 6269 } 6270 6271 6272 /* Return the machine subcode from the ELF e_flags header. */ 6273 6274 static int 6275 elf32_frv_machine (bfd *abfd) 6276 { 6277 switch (elf_elfheader (abfd)->e_flags & EF_FRV_CPU_MASK) 6278 { 6279 default: break; 6280 case EF_FRV_CPU_FR550: return bfd_mach_fr550; 6281 case EF_FRV_CPU_FR500: return bfd_mach_fr500; 6282 case EF_FRV_CPU_FR450: return bfd_mach_fr450; 6283 case EF_FRV_CPU_FR405: return bfd_mach_fr400; 6284 case EF_FRV_CPU_FR400: return bfd_mach_fr400; 6285 case EF_FRV_CPU_FR300: return bfd_mach_fr300; 6286 case EF_FRV_CPU_SIMPLE: return bfd_mach_frvsimple; 6287 case EF_FRV_CPU_TOMCAT: return bfd_mach_frvtomcat; 6288 } 6289 6290 return bfd_mach_frv; 6291 } 6292 6293 /* Set the right machine number for a FRV ELF file. */ 6294 6295 static bfd_boolean 6296 elf32_frv_object_p (bfd *abfd) 6297 { 6298 bfd_default_set_arch_mach (abfd, bfd_arch_frv, elf32_frv_machine (abfd)); 6299 return (((elf_elfheader (abfd)->e_flags & EF_FRV_FDPIC) != 0) 6300 == (IS_FDPIC (abfd))); 6301 } 6302 6303 /* Function to set the ELF flag bits. */ 6304 6305 static bfd_boolean 6306 frv_elf_set_private_flags (bfd *abfd, flagword flags) 6307 { 6308 elf_elfheader (abfd)->e_flags = flags; 6309 elf_flags_init (abfd) = TRUE; 6310 return TRUE; 6311 } 6312 6313 /* Return true if the architecture described by elf header flag 6314 EXTENSION is an extension of the architecture described by BASE. */ 6315 6316 static bfd_boolean 6317 frv_elf_arch_extension_p (flagword base, flagword extension) 6318 { 6319 if (base == extension) 6320 return TRUE; 6321 6322 /* CPU_GENERIC code can be merged with code for a specific 6323 architecture, in which case the result is marked as being 6324 for the specific architecture. Everything is therefore 6325 an extension of CPU_GENERIC. */ 6326 if (base == EF_FRV_CPU_GENERIC) 6327 return TRUE; 6328 6329 if (extension == EF_FRV_CPU_FR450) 6330 if (base == EF_FRV_CPU_FR400 || base == EF_FRV_CPU_FR405) 6331 return TRUE; 6332 6333 if (extension == EF_FRV_CPU_FR405) 6334 if (base == EF_FRV_CPU_FR400) 6335 return TRUE; 6336 6337 return FALSE; 6338 } 6339 6340 /* Merge backend specific data from an object file to the output 6341 object file when linking. */ 6342 6343 static bfd_boolean 6344 frv_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) 6345 { 6346 bfd *obfd = info->output_bfd; 6347 flagword old_flags, old_partial; 6348 flagword new_flags, new_partial; 6349 bfd_boolean error = FALSE; 6350 char new_opt[80]; 6351 char old_opt[80]; 6352 6353 new_opt[0] = old_opt[0] = '\0'; 6354 new_flags = elf_elfheader (ibfd)->e_flags; 6355 old_flags = elf_elfheader (obfd)->e_flags; 6356 6357 if (new_flags & EF_FRV_FDPIC) 6358 new_flags &= ~EF_FRV_PIC; 6359 6360 #ifdef DEBUG 6361 _bfd_error_handler 6362 ("old_flags = 0x%.8x, new_flags = 0x%.8x, init = %s, filename = %s", 6363 old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no", 6364 bfd_get_filename (ibfd)); 6365 #endif 6366 6367 if (!elf_flags_init (obfd)) /* First call, no flags set. */ 6368 { 6369 elf_flags_init (obfd) = TRUE; 6370 old_flags = new_flags; 6371 } 6372 6373 else if (new_flags == old_flags) /* Compatible flags are ok. */ 6374 ; 6375 6376 else /* Possibly incompatible flags. */ 6377 { 6378 /* Warn if different # of gprs are used. Note, 0 means nothing is 6379 said about the size of gprs. */ 6380 new_partial = (new_flags & EF_FRV_GPR_MASK); 6381 old_partial = (old_flags & EF_FRV_GPR_MASK); 6382 if (new_partial == old_partial) 6383 ; 6384 6385 else if (new_partial == 0) 6386 ; 6387 6388 else if (old_partial == 0) 6389 old_flags |= new_partial; 6390 6391 else 6392 { 6393 switch (new_partial) 6394 { 6395 default: strcat (new_opt, " -mgpr-??"); break; 6396 case EF_FRV_GPR_32: strcat (new_opt, " -mgpr-32"); break; 6397 case EF_FRV_GPR_64: strcat (new_opt, " -mgpr-64"); break; 6398 } 6399 6400 switch (old_partial) 6401 { 6402 default: strcat (old_opt, " -mgpr-??"); break; 6403 case EF_FRV_GPR_32: strcat (old_opt, " -mgpr-32"); break; 6404 case EF_FRV_GPR_64: strcat (old_opt, " -mgpr-64"); break; 6405 } 6406 } 6407 6408 /* Warn if different # of fprs are used. Note, 0 means nothing is 6409 said about the size of fprs. */ 6410 new_partial = (new_flags & EF_FRV_FPR_MASK); 6411 old_partial = (old_flags & EF_FRV_FPR_MASK); 6412 if (new_partial == old_partial) 6413 ; 6414 6415 else if (new_partial == 0) 6416 ; 6417 6418 else if (old_partial == 0) 6419 old_flags |= new_partial; 6420 6421 else 6422 { 6423 switch (new_partial) 6424 { 6425 default: strcat (new_opt, " -mfpr-?"); break; 6426 case EF_FRV_FPR_32: strcat (new_opt, " -mfpr-32"); break; 6427 case EF_FRV_FPR_64: strcat (new_opt, " -mfpr-64"); break; 6428 case EF_FRV_FPR_NONE: strcat (new_opt, " -msoft-float"); break; 6429 } 6430 6431 switch (old_partial) 6432 { 6433 default: strcat (old_opt, " -mfpr-?"); break; 6434 case EF_FRV_FPR_32: strcat (old_opt, " -mfpr-32"); break; 6435 case EF_FRV_FPR_64: strcat (old_opt, " -mfpr-64"); break; 6436 case EF_FRV_FPR_NONE: strcat (old_opt, " -msoft-float"); break; 6437 } 6438 } 6439 6440 /* Warn if different dword support was used. Note, 0 means nothing is 6441 said about the dword support. */ 6442 new_partial = (new_flags & EF_FRV_DWORD_MASK); 6443 old_partial = (old_flags & EF_FRV_DWORD_MASK); 6444 if (new_partial == old_partial) 6445 ; 6446 6447 else if (new_partial == 0) 6448 ; 6449 6450 else if (old_partial == 0) 6451 old_flags |= new_partial; 6452 6453 else 6454 { 6455 switch (new_partial) 6456 { 6457 default: strcat (new_opt, " -mdword-?"); break; 6458 case EF_FRV_DWORD_YES: strcat (new_opt, " -mdword"); break; 6459 case EF_FRV_DWORD_NO: strcat (new_opt, " -mno-dword"); break; 6460 } 6461 6462 switch (old_partial) 6463 { 6464 default: strcat (old_opt, " -mdword-?"); break; 6465 case EF_FRV_DWORD_YES: strcat (old_opt, " -mdword"); break; 6466 case EF_FRV_DWORD_NO: strcat (old_opt, " -mno-dword"); break; 6467 } 6468 } 6469 6470 /* Or in flags that accumulate (ie, if one module uses it, mark that the 6471 feature is used. */ 6472 old_flags |= new_flags & (EF_FRV_DOUBLE 6473 | EF_FRV_MEDIA 6474 | EF_FRV_MULADD 6475 | EF_FRV_NON_PIC_RELOCS); 6476 6477 /* If any module was compiled without -G0, clear the G0 bit. */ 6478 old_flags = ((old_flags & ~ EF_FRV_G0) 6479 | (old_flags & new_flags & EF_FRV_G0)); 6480 6481 /* If any module was compiled without -mnopack, clear the mnopack bit. */ 6482 old_flags = ((old_flags & ~ EF_FRV_NOPACK) 6483 | (old_flags & new_flags & EF_FRV_NOPACK)); 6484 6485 /* We don't have to do anything if the pic flags are the same, or the new 6486 module(s) were compiled with -mlibrary-pic. */ 6487 new_partial = (new_flags & EF_FRV_PIC_FLAGS); 6488 old_partial = (old_flags & EF_FRV_PIC_FLAGS); 6489 if ((new_partial == old_partial) || ((new_partial & EF_FRV_LIBPIC) != 0)) 6490 ; 6491 6492 /* If the old module(s) were compiled with -mlibrary-pic, copy in the pic 6493 flags if any from the new module. */ 6494 else if ((old_partial & EF_FRV_LIBPIC) != 0) 6495 old_flags = (old_flags & ~ EF_FRV_PIC_FLAGS) | new_partial; 6496 6497 /* If we have mixtures of -fpic and -fPIC, or in both bits. */ 6498 else if (new_partial != 0 && old_partial != 0) 6499 old_flags |= new_partial; 6500 6501 /* One module was compiled for pic and the other was not, see if we have 6502 had any relocations that are not pic-safe. */ 6503 else 6504 { 6505 if ((old_flags & EF_FRV_NON_PIC_RELOCS) == 0) 6506 old_flags |= new_partial; 6507 else 6508 { 6509 old_flags &= ~ EF_FRV_PIC_FLAGS; 6510 #ifndef FRV_NO_PIC_ERROR 6511 error = TRUE; 6512 _bfd_error_handler 6513 /* xgettext:c-format */ 6514 (_("%pB: compiled with %s and linked with modules" 6515 " that use non-pic relocations"), 6516 ibfd, (new_flags & EF_FRV_BIGPIC) ? "-fPIC" : "-fpic"); 6517 #endif 6518 } 6519 } 6520 6521 /* Warn if different cpu is used (allow a specific cpu to override 6522 the generic cpu). */ 6523 new_partial = (new_flags & EF_FRV_CPU_MASK); 6524 old_partial = (old_flags & EF_FRV_CPU_MASK); 6525 if (frv_elf_arch_extension_p (new_partial, old_partial)) 6526 ; 6527 6528 else if (frv_elf_arch_extension_p (old_partial, new_partial)) 6529 old_flags = (old_flags & ~EF_FRV_CPU_MASK) | new_partial; 6530 6531 else 6532 { 6533 switch (new_partial) 6534 { 6535 default: strcat (new_opt, " -mcpu=?"); break; 6536 case EF_FRV_CPU_GENERIC: strcat (new_opt, " -mcpu=frv"); break; 6537 case EF_FRV_CPU_SIMPLE: strcat (new_opt, " -mcpu=simple"); break; 6538 case EF_FRV_CPU_FR550: strcat (new_opt, " -mcpu=fr550"); break; 6539 case EF_FRV_CPU_FR500: strcat (new_opt, " -mcpu=fr500"); break; 6540 case EF_FRV_CPU_FR450: strcat (new_opt, " -mcpu=fr450"); break; 6541 case EF_FRV_CPU_FR405: strcat (new_opt, " -mcpu=fr405"); break; 6542 case EF_FRV_CPU_FR400: strcat (new_opt, " -mcpu=fr400"); break; 6543 case EF_FRV_CPU_FR300: strcat (new_opt, " -mcpu=fr300"); break; 6544 case EF_FRV_CPU_TOMCAT: strcat (new_opt, " -mcpu=tomcat"); break; 6545 } 6546 6547 switch (old_partial) 6548 { 6549 default: strcat (old_opt, " -mcpu=?"); break; 6550 case EF_FRV_CPU_GENERIC: strcat (old_opt, " -mcpu=frv"); break; 6551 case EF_FRV_CPU_SIMPLE: strcat (old_opt, " -mcpu=simple"); break; 6552 case EF_FRV_CPU_FR550: strcat (old_opt, " -mcpu=fr550"); break; 6553 case EF_FRV_CPU_FR500: strcat (old_opt, " -mcpu=fr500"); break; 6554 case EF_FRV_CPU_FR450: strcat (old_opt, " -mcpu=fr450"); break; 6555 case EF_FRV_CPU_FR405: strcat (old_opt, " -mcpu=fr405"); break; 6556 case EF_FRV_CPU_FR400: strcat (old_opt, " -mcpu=fr400"); break; 6557 case EF_FRV_CPU_FR300: strcat (old_opt, " -mcpu=fr300"); break; 6558 case EF_FRV_CPU_TOMCAT: strcat (old_opt, " -mcpu=tomcat"); break; 6559 } 6560 } 6561 6562 /* Print out any mismatches from above. */ 6563 if (new_opt[0]) 6564 { 6565 error = TRUE; 6566 _bfd_error_handler 6567 /* xgettext:c-format */ 6568 (_("%pB: compiled with %s and linked with modules compiled with %s"), 6569 ibfd, new_opt, old_opt); 6570 } 6571 6572 /* Warn about any other mismatches */ 6573 new_partial = (new_flags & ~ EF_FRV_ALL_FLAGS); 6574 old_partial = (old_flags & ~ EF_FRV_ALL_FLAGS); 6575 if (new_partial != old_partial) 6576 { 6577 old_flags |= new_partial; 6578 error = TRUE; 6579 _bfd_error_handler 6580 /* xgettext:c-format */ 6581 (_("%pB: uses different unknown e_flags (%#x) fields" 6582 " than previous modules (%#x)"), 6583 ibfd, new_partial, old_partial); 6584 } 6585 } 6586 6587 /* If the cpu is -mcpu=simple, then set the -mnopack bit. */ 6588 if ((old_flags & EF_FRV_CPU_MASK) == EF_FRV_CPU_SIMPLE) 6589 old_flags |= EF_FRV_NOPACK; 6590 6591 /* Update the old flags now with changes made above. */ 6592 old_partial = elf_elfheader (obfd)->e_flags & EF_FRV_CPU_MASK; 6593 elf_elfheader (obfd)->e_flags = old_flags; 6594 if (old_partial != (old_flags & EF_FRV_CPU_MASK)) 6595 bfd_default_set_arch_mach (obfd, bfd_arch_frv, elf32_frv_machine (obfd)); 6596 6597 if (((new_flags & EF_FRV_FDPIC) == 0) 6598 != (! IS_FDPIC (ibfd))) 6599 { 6600 error = TRUE; 6601 if (IS_FDPIC (obfd)) 6602 _bfd_error_handler 6603 (_("%pB: cannot link non-fdpic object file into fdpic executable"), 6604 ibfd); 6605 else 6606 _bfd_error_handler 6607 (_("%pB: cannot link fdpic object file into non-fdpic executable"), 6608 ibfd); 6609 } 6610 6611 if (error) 6612 bfd_set_error (bfd_error_bad_value); 6613 6614 return !error; 6615 } 6616 6617 6618 static bfd_boolean 6619 frv_elf_print_private_bfd_data (bfd *abfd, void * ptr) 6620 { 6621 FILE *file = (FILE *) ptr; 6622 flagword flags; 6623 6624 BFD_ASSERT (abfd != NULL && ptr != NULL); 6625 6626 /* Print normal ELF private data. */ 6627 _bfd_elf_print_private_bfd_data (abfd, ptr); 6628 6629 flags = elf_elfheader (abfd)->e_flags; 6630 fprintf (file, _("private flags = 0x%lx:"), (unsigned long) flags); 6631 6632 switch (flags & EF_FRV_CPU_MASK) 6633 { 6634 default: break; 6635 case EF_FRV_CPU_SIMPLE: fprintf (file, " -mcpu=simple"); break; 6636 case EF_FRV_CPU_FR550: fprintf (file, " -mcpu=fr550"); break; 6637 case EF_FRV_CPU_FR500: fprintf (file, " -mcpu=fr500"); break; 6638 case EF_FRV_CPU_FR450: fprintf (file, " -mcpu=fr450"); break; 6639 case EF_FRV_CPU_FR405: fprintf (file, " -mcpu=fr405"); break; 6640 case EF_FRV_CPU_FR400: fprintf (file, " -mcpu=fr400"); break; 6641 case EF_FRV_CPU_FR300: fprintf (file, " -mcpu=fr300"); break; 6642 case EF_FRV_CPU_TOMCAT: fprintf (file, " -mcpu=tomcat"); break; 6643 } 6644 6645 switch (flags & EF_FRV_GPR_MASK) 6646 { 6647 default: break; 6648 case EF_FRV_GPR_32: fprintf (file, " -mgpr-32"); break; 6649 case EF_FRV_GPR_64: fprintf (file, " -mgpr-64"); break; 6650 } 6651 6652 switch (flags & EF_FRV_FPR_MASK) 6653 { 6654 default: break; 6655 case EF_FRV_FPR_32: fprintf (file, " -mfpr-32"); break; 6656 case EF_FRV_FPR_64: fprintf (file, " -mfpr-64"); break; 6657 case EF_FRV_FPR_NONE: fprintf (file, " -msoft-float"); break; 6658 } 6659 6660 switch (flags & EF_FRV_DWORD_MASK) 6661 { 6662 default: break; 6663 case EF_FRV_DWORD_YES: fprintf (file, " -mdword"); break; 6664 case EF_FRV_DWORD_NO: fprintf (file, " -mno-dword"); break; 6665 } 6666 6667 if (flags & EF_FRV_DOUBLE) 6668 fprintf (file, " -mdouble"); 6669 6670 if (flags & EF_FRV_MEDIA) 6671 fprintf (file, " -mmedia"); 6672 6673 if (flags & EF_FRV_MULADD) 6674 fprintf (file, " -mmuladd"); 6675 6676 if (flags & EF_FRV_PIC) 6677 fprintf (file, " -fpic"); 6678 6679 if (flags & EF_FRV_BIGPIC) 6680 fprintf (file, " -fPIC"); 6681 6682 if (flags & EF_FRV_LIBPIC) 6683 fprintf (file, " -mlibrary-pic"); 6684 6685 if (flags & EF_FRV_FDPIC) 6686 fprintf (file, " -mfdpic"); 6687 6688 if (flags & EF_FRV_NON_PIC_RELOCS) 6689 fprintf (file, " non-pic relocations"); 6690 6691 if (flags & EF_FRV_G0) 6692 fprintf (file, " -G0"); 6693 6694 fputc ('\n', file); 6695 return TRUE; 6696 } 6697 6698 6699 /* Support for core dump NOTE sections. */ 6700 6701 static bfd_boolean 6702 elf32_frv_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 6703 { 6704 int offset; 6705 unsigned int raw_size; 6706 6707 switch (note->descsz) 6708 { 6709 default: 6710 return FALSE; 6711 6712 /* The Linux/FRV elf_prstatus struct is 268 bytes long. The other 6713 hardcoded offsets and sizes listed below (and contained within 6714 this lexical block) refer to fields in the target's elf_prstatus 6715 struct. */ 6716 case 268: 6717 /* `pr_cursig' is at offset 12. */ 6718 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); 6719 6720 /* `pr_pid' is at offset 24. */ 6721 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); 6722 6723 /* `pr_reg' is at offset 72. */ 6724 offset = 72; 6725 6726 /* Most grok_prstatus implementations set `raw_size' to the size 6727 of the pr_reg field. For Linux/FRV, we set `raw_size' to be 6728 the size of `pr_reg' plus the size of `pr_exec_fdpic_loadmap' 6729 and `pr_interp_fdpic_loadmap', both of which (by design) 6730 immediately follow `pr_reg'. This will allow these fields to 6731 be viewed by GDB as registers. 6732 6733 `pr_reg' is 184 bytes long. `pr_exec_fdpic_loadmap' and 6734 `pr_interp_fdpic_loadmap' are 4 bytes each. */ 6735 raw_size = 184 + 4 + 4; 6736 6737 break; 6738 } 6739 6740 /* Make a ".reg/999" section. */ 6741 return _bfd_elfcore_make_pseudosection (abfd, ".reg", raw_size, 6742 note->descpos + offset); 6743 } 6744 6745 static bfd_boolean 6746 elf32_frv_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 6747 { 6748 switch (note->descsz) 6749 { 6750 default: 6751 return FALSE; 6752 6753 /* The Linux/FRV elf_prpsinfo struct is 124 bytes long. */ 6754 case 124: 6755 6756 /* `pr_fname' is found at offset 28 and is 16 bytes long. */ 6757 elf_tdata (abfd)->core->program 6758 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); 6759 6760 /* `pr_psargs' is found at offset 44 and is 80 bytes long. */ 6761 elf_tdata (abfd)->core->command 6762 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); 6763 } 6764 6765 /* Note that for some reason, a spurious space is tacked 6766 onto the end of the args in some (at least one anyway) 6767 implementations, so strip it off if it exists. */ 6768 6769 { 6770 char *command = elf_tdata (abfd)->core->command; 6771 int n = strlen (command); 6772 6773 if (0 < n && command[n - 1] == ' ') 6774 command[n - 1] = '\0'; 6775 } 6776 6777 return TRUE; 6778 } 6779 #define ELF_ARCH bfd_arch_frv 6780 #define ELF_MACHINE_CODE EM_CYGNUS_FRV 6781 #define ELF_MAXPAGESIZE 0x1000 6782 6783 #define TARGET_BIG_SYM frv_elf32_vec 6784 #define TARGET_BIG_NAME "elf32-frv" 6785 6786 #define elf_info_to_howto frv_info_to_howto_rela 6787 #define elf_backend_relocate_section elf32_frv_relocate_section 6788 #define elf_backend_gc_mark_hook elf32_frv_gc_mark_hook 6789 #define elf_backend_check_relocs elf32_frv_check_relocs 6790 #define elf_backend_object_p elf32_frv_object_p 6791 #define elf_backend_add_symbol_hook elf32_frv_add_symbol_hook 6792 6793 #define elf_backend_stack_align 8 6794 #define elf_backend_can_gc_sections 1 6795 #define elf_backend_rela_normal 1 6796 6797 #define bfd_elf32_bfd_reloc_type_lookup frv_reloc_type_lookup 6798 #define bfd_elf32_bfd_reloc_name_lookup frv_reloc_name_lookup 6799 #define bfd_elf32_bfd_set_private_flags frv_elf_set_private_flags 6800 #define bfd_elf32_bfd_merge_private_bfd_data frv_elf_merge_private_bfd_data 6801 #define bfd_elf32_bfd_print_private_bfd_data frv_elf_print_private_bfd_data 6802 6803 #define elf_backend_want_got_sym 1 6804 #define elf_backend_got_header_size 0 6805 #define elf_backend_want_got_plt 0 6806 #define elf_backend_plt_readonly 1 6807 #define elf_backend_want_plt_sym 0 6808 #define elf_backend_plt_header_size 0 6809 6810 #define elf_backend_finish_dynamic_sections \ 6811 elf32_frv_finish_dynamic_sections 6812 6813 #define elf_backend_grok_prstatus elf32_frv_grok_prstatus 6814 #define elf_backend_grok_psinfo elf32_frv_grok_psinfo 6815 6816 #define elf_backend_linux_prpsinfo32_ugid16 TRUE 6817 6818 #include "elf32-target.h" 6819 6820 #undef ELF_TARGET_ID 6821 #define ELF_TARGET_ID FRV_ELF_DATA 6822 #undef ELF_MAXPAGESIZE 6823 #define ELF_MAXPAGESIZE 0x4000 6824 6825 #undef TARGET_BIG_SYM 6826 #define TARGET_BIG_SYM frv_elf32_fdpic_vec 6827 #undef TARGET_BIG_NAME 6828 #define TARGET_BIG_NAME "elf32-frvfdpic" 6829 #undef elf32_bed 6830 #define elf32_bed elf32_frvfdpic_bed 6831 6832 #undef elf_info_to_howto_rel 6833 #define elf_info_to_howto_rel frvfdpic_info_to_howto_rel 6834 6835 #undef bfd_elf32_bfd_link_hash_table_create 6836 #define bfd_elf32_bfd_link_hash_table_create \ 6837 frvfdpic_elf_link_hash_table_create 6838 #undef elf_backend_always_size_sections 6839 #define elf_backend_always_size_sections \ 6840 elf32_frvfdpic_always_size_sections 6841 6842 #undef elf_backend_create_dynamic_sections 6843 #define elf_backend_create_dynamic_sections \ 6844 elf32_frvfdpic_create_dynamic_sections 6845 #undef elf_backend_adjust_dynamic_symbol 6846 #define elf_backend_adjust_dynamic_symbol \ 6847 elf32_frvfdpic_adjust_dynamic_symbol 6848 #undef elf_backend_size_dynamic_sections 6849 #define elf_backend_size_dynamic_sections \ 6850 elf32_frvfdpic_size_dynamic_sections 6851 #undef bfd_elf32_bfd_relax_section 6852 #define bfd_elf32_bfd_relax_section \ 6853 elf32_frvfdpic_relax_section 6854 #undef elf_backend_finish_dynamic_symbol 6855 #define elf_backend_finish_dynamic_symbol \ 6856 elf32_frvfdpic_finish_dynamic_symbol 6857 #undef elf_backend_finish_dynamic_sections 6858 #define elf_backend_finish_dynamic_sections \ 6859 elf32_frvfdpic_finish_dynamic_sections 6860 6861 #undef elf_backend_discard_info 6862 #define elf_backend_discard_info \ 6863 frvfdpic_elf_discard_info 6864 #undef elf_backend_can_make_relative_eh_frame 6865 #define elf_backend_can_make_relative_eh_frame \ 6866 frvfdpic_elf_use_relative_eh_frame 6867 #undef elf_backend_can_make_lsda_relative_eh_frame 6868 #define elf_backend_can_make_lsda_relative_eh_frame \ 6869 frvfdpic_elf_use_relative_eh_frame 6870 #undef elf_backend_encode_eh_address 6871 #define elf_backend_encode_eh_address \ 6872 frvfdpic_elf_encode_eh_address 6873 6874 #undef elf_backend_may_use_rel_p 6875 #define elf_backend_may_use_rel_p 1 6876 #undef elf_backend_may_use_rela_p 6877 #define elf_backend_may_use_rela_p 1 6878 /* We use REL for dynamic relocations only. */ 6879 #undef elf_backend_default_use_rela_p 6880 #define elf_backend_default_use_rela_p 1 6881 6882 #undef elf_backend_omit_section_dynsym 6883 #define elf_backend_omit_section_dynsym _frvfdpic_link_omit_section_dynsym 6884 6885 #include "elf32-target.h" 6886