1/* FRV-specific support for 32-bit ELF. 2 Copyright (C) 2002-2017 Free Software Foundation, Inc. 3 4 This file is part of BFD, the Binary File Descriptor library. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 19 MA 02110-1301, USA. */ 20 21#include "sysdep.h" 22#include "bfd.h" 23#include "libbfd.h" 24#include "elf-bfd.h" 25#include "elf/frv.h" 26#include "dwarf2.h" 27#include "hashtab.h" 28 29/* Forward declarations. */ 30 31 32static reloc_howto_type elf32_frv_howto_table [] = 33{ 34 /* This reloc does nothing. */ 35 HOWTO (R_FRV_NONE, /* type */ 36 0, /* rightshift */ 37 3, /* size (0 = byte, 1 = short, 2 = long) */ 38 0, /* bitsize */ 39 FALSE, /* pc_relative */ 40 0, /* bitpos */ 41 complain_overflow_dont, /* complain_on_overflow */ 42 bfd_elf_generic_reloc, /* special_function */ 43 "R_FRV_NONE", /* name */ 44 FALSE, /* partial_inplace */ 45 0, /* src_mask */ 46 0, /* dst_mask */ 47 FALSE), /* pcrel_offset */ 48 49 /* A 32 bit absolute relocation. */ 50 HOWTO (R_FRV_32, /* type */ 51 0, /* rightshift */ 52 2, /* size (0 = byte, 1 = short, 2 = long) */ 53 32, /* bitsize */ 54 FALSE, /* pc_relative */ 55 0, /* bitpos */ 56 complain_overflow_bitfield, /* complain_on_overflow */ 57 bfd_elf_generic_reloc, /* special_function */ 58 "R_FRV_32", /* name */ 59 FALSE, /* partial_inplace */ 60 0xffffffff, /* src_mask */ 61 0xffffffff, /* dst_mask */ 62 FALSE), /* pcrel_offset */ 63 64 /* A 16 bit pc-relative relocation. */ 65 HOWTO (R_FRV_LABEL16, /* type */ 66 2, /* rightshift */ 67 2, /* size (0 = byte, 1 = short, 2 = long) */ 68 16, /* bitsize */ 69 TRUE, /* pc_relative */ 70 0, /* bitpos */ 71 complain_overflow_signed, /* complain_on_overflow */ 72 bfd_elf_generic_reloc, /* special_function */ 73 "R_FRV_LABEL16", /* name */ 74 FALSE, /* partial_inplace */ 75 0xffff, /* src_mask */ 76 0xffff, /* dst_mask */ 77 TRUE), /* pcrel_offset */ 78 79 /* A 24-bit pc-relative relocation. */ 80 HOWTO (R_FRV_LABEL24, /* type */ 81 2, /* rightshift */ 82 2, /* size (0 = byte, 1 = short, 2 = long) */ 83 26, /* bitsize */ 84 TRUE, /* pc_relative */ 85 0, /* bitpos */ 86 complain_overflow_bitfield, /* complain_on_overflow */ 87 bfd_elf_generic_reloc, /* special_function */ 88 "R_FRV_LABEL24", /* name */ 89 FALSE, /* partial_inplace */ 90 0x7e03ffff, /* src_mask */ 91 0x7e03ffff, /* dst_mask */ 92 TRUE), /* pcrel_offset */ 93 94 HOWTO (R_FRV_LO16, /* type */ 95 0, /* rightshift */ 96 2, /* size (0 = byte, 1 = short, 2 = long) */ 97 16, /* bitsize */ 98 FALSE, /* pc_relative */ 99 0, /* bitpos */ 100 complain_overflow_dont, /* complain_on_overflow */ 101 bfd_elf_generic_reloc, /* special_function */ 102 "R_FRV_LO16", /* name */ 103 FALSE, /* partial_inplace */ 104 0xffff, /* src_mask */ 105 0xffff, /* dst_mask */ 106 FALSE), /* pcrel_offset */ 107 108 HOWTO (R_FRV_HI16, /* type */ 109 0, /* rightshift */ 110 2, /* size (0 = byte, 1 = short, 2 = long) */ 111 16, /* bitsize */ 112 FALSE, /* pc_relative */ 113 0, /* bitpos */ 114 complain_overflow_dont, /* complain_on_overflow */ 115 bfd_elf_generic_reloc, /* special_function */ 116 "R_FRV_HI16", /* name */ 117 FALSE, /* partial_inplace */ 118 0xffff, /* src_mask */ 119 0xffff, /* dst_mask */ 120 FALSE), /* pcrel_offset */ 121 122 HOWTO (R_FRV_GPREL12, /* type */ 123 0, /* rightshift */ 124 2, /* size (0 = byte, 1 = short, 2 = long) */ 125 12, /* bitsize */ 126 FALSE, /* pc_relative */ 127 0, /* bitpos */ 128 complain_overflow_dont, /* complain_on_overflow */ 129 bfd_elf_generic_reloc, /* special_function */ 130 "R_FRV_GPREL12", /* name */ 131 FALSE, /* partial_inplace */ 132 0xfff, /* src_mask */ 133 0xfff, /* dst_mask */ 134 FALSE), /* pcrel_offset */ 135 136 HOWTO (R_FRV_GPRELU12, /* type */ 137 0, /* rightshift */ 138 2, /* size (0 = byte, 1 = short, 2 = long) */ 139 12, /* bitsize */ 140 FALSE, /* pc_relative */ 141 0, /* bitpos */ 142 complain_overflow_dont, /* complain_on_overflow */ 143 bfd_elf_generic_reloc, /* special_function */ 144 "R_FRV_GPRELU12", /* name */ 145 FALSE, /* partial_inplace */ 146 0xfff, /* src_mask */ 147 0x3f03f, /* dst_mask */ 148 FALSE), /* pcrel_offset */ 149 150 HOWTO (R_FRV_GPREL32, /* type */ 151 0, /* rightshift */ 152 2, /* size (0 = byte, 1 = short, 2 = long) */ 153 32, /* bitsize */ 154 FALSE, /* pc_relative */ 155 0, /* bitpos */ 156 complain_overflow_dont, /* complain_on_overflow */ 157 bfd_elf_generic_reloc, /* special_function */ 158 "R_FRV_GPREL32", /* name */ 159 FALSE, /* partial_inplace */ 160 0xffffffff, /* src_mask */ 161 0xffffffff, /* dst_mask */ 162 FALSE), /* pcrel_offset */ 163 164 HOWTO (R_FRV_GPRELHI, /* type */ 165 0, /* rightshift */ 166 2, /* size (0 = byte, 1 = short, 2 = long) */ 167 16, /* bitsize */ 168 FALSE, /* pc_relative */ 169 0, /* bitpos */ 170 complain_overflow_dont, /* complain_on_overflow */ 171 bfd_elf_generic_reloc, /* special_function */ 172 "R_FRV_GPRELHI", /* name */ 173 FALSE, /* partial_inplace */ 174 0xffff, /* src_mask */ 175 0xffff, /* dst_mask */ 176 FALSE), /* pcrel_offset */ 177 178 HOWTO (R_FRV_GPRELLO, /* type */ 179 0, /* rightshift */ 180 2, /* size (0 = byte, 1 = short, 2 = long) */ 181 16, /* bitsize */ 182 FALSE, /* pc_relative */ 183 0, /* bitpos */ 184 complain_overflow_dont, /* complain_on_overflow */ 185 bfd_elf_generic_reloc, /* special_function */ 186 "R_FRV_GPRELLO", /* name */ 187 FALSE, /* partial_inplace */ 188 0xffff, /* src_mask */ 189 0xffff, /* dst_mask */ 190 FALSE), /* pcrel_offset */ 191 192 /* A 12-bit signed operand with the GOT offset for the address of 193 the symbol. */ 194 HOWTO (R_FRV_GOT12, /* type */ 195 0, /* rightshift */ 196 2, /* size (0 = byte, 1 = short, 2 = long) */ 197 12, /* bitsize */ 198 FALSE, /* pc_relative */ 199 0, /* bitpos */ 200 complain_overflow_signed, /* complain_on_overflow */ 201 bfd_elf_generic_reloc, /* special_function */ 202 "R_FRV_GOT12", /* name */ 203 FALSE, /* partial_inplace */ 204 0xfff, /* src_mask */ 205 0xfff, /* dst_mask */ 206 FALSE), /* pcrel_offset */ 207 208 /* The upper 16 bits of the GOT offset for the address of the 209 symbol. */ 210 HOWTO (R_FRV_GOTHI, /* type */ 211 0, /* rightshift */ 212 2, /* size (0 = byte, 1 = short, 2 = long) */ 213 16, /* bitsize */ 214 FALSE, /* pc_relative */ 215 0, /* bitpos */ 216 complain_overflow_dont, /* complain_on_overflow */ 217 bfd_elf_generic_reloc, /* special_function */ 218 "R_FRV_GOTHI", /* name */ 219 FALSE, /* partial_inplace */ 220 0xffff, /* src_mask */ 221 0xffff, /* dst_mask */ 222 FALSE), /* pcrel_offset */ 223 224 /* The lower 16 bits of the GOT offset for the address of the 225 symbol. */ 226 HOWTO (R_FRV_GOTLO, /* type */ 227 0, /* rightshift */ 228 2, /* size (0 = byte, 1 = short, 2 = long) */ 229 16, /* bitsize */ 230 FALSE, /* pc_relative */ 231 0, /* bitpos */ 232 complain_overflow_dont, /* complain_on_overflow */ 233 bfd_elf_generic_reloc, /* special_function */ 234 "R_FRV_GOTLO", /* name */ 235 FALSE, /* partial_inplace */ 236 0xffff, /* src_mask */ 237 0xffff, /* dst_mask */ 238 FALSE), /* pcrel_offset */ 239 240 /* The 32-bit address of the canonical descriptor of a function. */ 241 HOWTO (R_FRV_FUNCDESC, /* type */ 242 0, /* rightshift */ 243 2, /* size (0 = byte, 1 = short, 2 = long) */ 244 32, /* bitsize */ 245 FALSE, /* pc_relative */ 246 0, /* bitpos */ 247 complain_overflow_bitfield, /* complain_on_overflow */ 248 bfd_elf_generic_reloc, /* special_function */ 249 "R_FRV_FUNCDESC", /* name */ 250 FALSE, /* partial_inplace */ 251 0xffffffff, /* src_mask */ 252 0xffffffff, /* dst_mask */ 253 FALSE), /* pcrel_offset */ 254 255 /* A 12-bit signed operand with the GOT offset for the address of 256 canonical descriptor of a function. */ 257 HOWTO (R_FRV_FUNCDESC_GOT12, /* type */ 258 0, /* rightshift */ 259 2, /* size (0 = byte, 1 = short, 2 = long) */ 260 12, /* bitsize */ 261 FALSE, /* pc_relative */ 262 0, /* bitpos */ 263 complain_overflow_signed, /* complain_on_overflow */ 264 bfd_elf_generic_reloc, /* special_function */ 265 "R_FRV_FUNCDESC_GOT12", /* name */ 266 FALSE, /* partial_inplace */ 267 0xfff, /* src_mask */ 268 0xfff, /* dst_mask */ 269 FALSE), /* pcrel_offset */ 270 271 /* The upper 16 bits of the GOT offset for the address of the 272 canonical descriptor of a function. */ 273 HOWTO (R_FRV_FUNCDESC_GOTHI, /* type */ 274 0, /* rightshift */ 275 2, /* size (0 = byte, 1 = short, 2 = long) */ 276 16, /* bitsize */ 277 FALSE, /* pc_relative */ 278 0, /* bitpos */ 279 complain_overflow_dont, /* complain_on_overflow */ 280 bfd_elf_generic_reloc, /* special_function */ 281 "R_FRV_FUNCDESC_GOTHI", /* name */ 282 FALSE, /* partial_inplace */ 283 0xffff, /* src_mask */ 284 0xffff, /* dst_mask */ 285 FALSE), /* pcrel_offset */ 286 287 /* The lower 16 bits of the GOT offset for the address of the 288 canonical descriptor of a function. */ 289 HOWTO (R_FRV_FUNCDESC_GOTLO, /* type */ 290 0, /* rightshift */ 291 2, /* size (0 = byte, 1 = short, 2 = long) */ 292 16, /* bitsize */ 293 FALSE, /* pc_relative */ 294 0, /* bitpos */ 295 complain_overflow_dont, /* complain_on_overflow */ 296 bfd_elf_generic_reloc, /* special_function */ 297 "R_FRV_FUNCDESC_GOTLO", /* name */ 298 FALSE, /* partial_inplace */ 299 0xffff, /* src_mask */ 300 0xffff, /* dst_mask */ 301 FALSE), /* pcrel_offset */ 302 303 /* The 64-bit descriptor of a function. */ 304 HOWTO (R_FRV_FUNCDESC_VALUE, /* type */ 305 0, /* rightshift */ 306 2, /* size (0 = byte, 1 = short, 2 = long) */ 307 64, /* bitsize */ 308 FALSE, /* pc_relative */ 309 0, /* bitpos */ 310 complain_overflow_bitfield, /* complain_on_overflow */ 311 bfd_elf_generic_reloc, /* special_function */ 312 "R_FRV_FUNCDESC_VALUE", /* name */ 313 FALSE, /* partial_inplace */ 314 0xffffffff, /* src_mask */ 315 0xffffffff, /* dst_mask */ 316 FALSE), /* pcrel_offset */ 317 318 /* A 12-bit signed operand with the GOT offset for the address of 319 canonical descriptor of a function. */ 320 HOWTO (R_FRV_FUNCDESC_GOTOFF12, /* type */ 321 0, /* rightshift */ 322 2, /* size (0 = byte, 1 = short, 2 = long) */ 323 12, /* bitsize */ 324 FALSE, /* pc_relative */ 325 0, /* bitpos */ 326 complain_overflow_signed, /* complain_on_overflow */ 327 bfd_elf_generic_reloc, /* special_function */ 328 "R_FRV_FUNCDESC_GOTOFF12", /* name */ 329 FALSE, /* partial_inplace */ 330 0xfff, /* src_mask */ 331 0xfff, /* dst_mask */ 332 FALSE), /* pcrel_offset */ 333 334 /* The upper 16 bits of the GOT offset for the address of the 335 canonical descriptor of a function. */ 336 HOWTO (R_FRV_FUNCDESC_GOTOFFHI, /* type */ 337 0, /* rightshift */ 338 2, /* size (0 = byte, 1 = short, 2 = long) */ 339 16, /* bitsize */ 340 FALSE, /* pc_relative */ 341 0, /* bitpos */ 342 complain_overflow_dont, /* complain_on_overflow */ 343 bfd_elf_generic_reloc, /* special_function */ 344 "R_FRV_FUNCDESC_GOTOFFHI", /* name */ 345 FALSE, /* partial_inplace */ 346 0xffff, /* src_mask */ 347 0xffff, /* dst_mask */ 348 FALSE), /* pcrel_offset */ 349 350 /* The lower 16 bits of the GOT offset for the address of the 351 canonical descriptor of a function. */ 352 HOWTO (R_FRV_FUNCDESC_GOTOFFLO, /* type */ 353 0, /* rightshift */ 354 2, /* size (0 = byte, 1 = short, 2 = long) */ 355 16, /* bitsize */ 356 FALSE, /* pc_relative */ 357 0, /* bitpos */ 358 complain_overflow_dont, /* complain_on_overflow */ 359 bfd_elf_generic_reloc, /* special_function */ 360 "R_FRV_FUNCDESC_GOTOFFLO", /* name */ 361 FALSE, /* partial_inplace */ 362 0xffff, /* src_mask */ 363 0xffff, /* dst_mask */ 364 FALSE), /* pcrel_offset */ 365 366 /* A 12-bit signed operand with the GOT offset for the address of 367 the symbol. */ 368 HOWTO (R_FRV_GOTOFF12, /* type */ 369 0, /* rightshift */ 370 2, /* size (0 = byte, 1 = short, 2 = long) */ 371 12, /* bitsize */ 372 FALSE, /* pc_relative */ 373 0, /* bitpos */ 374 complain_overflow_signed, /* complain_on_overflow */ 375 bfd_elf_generic_reloc, /* special_function */ 376 "R_FRV_GOTOFF12", /* name */ 377 FALSE, /* partial_inplace */ 378 0xfff, /* src_mask */ 379 0xfff, /* dst_mask */ 380 FALSE), /* pcrel_offset */ 381 382 /* The upper 16 bits of the GOT offset for the address of the 383 symbol. */ 384 HOWTO (R_FRV_GOTOFFHI, /* type */ 385 0, /* rightshift */ 386 2, /* size (0 = byte, 1 = short, 2 = long) */ 387 16, /* bitsize */ 388 FALSE, /* pc_relative */ 389 0, /* bitpos */ 390 complain_overflow_dont, /* complain_on_overflow */ 391 bfd_elf_generic_reloc, /* special_function */ 392 "R_FRV_GOTOFFHI", /* name */ 393 FALSE, /* partial_inplace */ 394 0xffff, /* src_mask */ 395 0xffff, /* dst_mask */ 396 FALSE), /* pcrel_offset */ 397 398 /* The lower 16 bits of the GOT offset for the address of the 399 symbol. */ 400 HOWTO (R_FRV_GOTOFFLO, /* type */ 401 0, /* rightshift */ 402 2, /* size (0 = byte, 1 = short, 2 = long) */ 403 16, /* bitsize */ 404 FALSE, /* pc_relative */ 405 0, /* bitpos */ 406 complain_overflow_dont, /* complain_on_overflow */ 407 bfd_elf_generic_reloc, /* special_function */ 408 "R_FRV_GOTOFFLO", /* name */ 409 FALSE, /* partial_inplace */ 410 0xffff, /* src_mask */ 411 0xffff, /* dst_mask */ 412 FALSE), /* pcrel_offset */ 413 414 /* A 24-bit pc-relative relocation referencing the TLS PLT entry for 415 a thread-local symbol. If the symbol number is 0, it refers to 416 the module. */ 417 HOWTO (R_FRV_GETTLSOFF, /* type */ 418 2, /* rightshift */ 419 2, /* size (0 = byte, 1 = short, 2 = long) */ 420 26, /* bitsize */ 421 TRUE, /* pc_relative */ 422 0, /* bitpos */ 423 complain_overflow_bitfield, /* complain_on_overflow */ 424 bfd_elf_generic_reloc, /* special_function */ 425 "R_FRV_GETTLSOFF", /* name */ 426 FALSE, /* partial_inplace */ 427 0x7e03ffff, /* src_mask */ 428 0x7e03ffff, /* dst_mask */ 429 TRUE), /* pcrel_offset */ 430 431 /* A 64-bit TLS descriptor for a symbol. This relocation is only 432 valid as a REL, dynamic relocation. */ 433 HOWTO (R_FRV_TLSDESC_VALUE, /* type */ 434 0, /* rightshift */ 435 2, /* size (0 = byte, 1 = short, 2 = long) */ 436 64, /* bitsize */ 437 FALSE, /* pc_relative */ 438 0, /* bitpos */ 439 complain_overflow_bitfield, /* complain_on_overflow */ 440 bfd_elf_generic_reloc, /* special_function */ 441 "R_FRV_TLSDESC_VALUE", /* name */ 442 FALSE, /* partial_inplace */ 443 0xffffffff, /* src_mask */ 444 0xffffffff, /* dst_mask */ 445 FALSE), /* pcrel_offset */ 446 447 /* A 12-bit signed operand with the GOT offset for the TLS 448 descriptor of the symbol. */ 449 HOWTO (R_FRV_GOTTLSDESC12, /* type */ 450 0, /* rightshift */ 451 2, /* size (0 = byte, 1 = short, 2 = long) */ 452 12, /* bitsize */ 453 FALSE, /* pc_relative */ 454 0, /* bitpos */ 455 complain_overflow_signed, /* complain_on_overflow */ 456 bfd_elf_generic_reloc, /* special_function */ 457 "R_FRV_GOTTLSDESC12", /* name */ 458 FALSE, /* partial_inplace */ 459 0xfff, /* src_mask */ 460 0xfff, /* dst_mask */ 461 FALSE), /* pcrel_offset */ 462 463 /* The upper 16 bits of the GOT offset for the TLS descriptor of the 464 symbol. */ 465 HOWTO (R_FRV_GOTTLSDESCHI, /* type */ 466 0, /* rightshift */ 467 2, /* size (0 = byte, 1 = short, 2 = long) */ 468 16, /* bitsize */ 469 FALSE, /* pc_relative */ 470 0, /* bitpos */ 471 complain_overflow_dont, /* complain_on_overflow */ 472 bfd_elf_generic_reloc, /* special_function */ 473 "R_FRV_GOTTLSDESCHI", /* name */ 474 FALSE, /* partial_inplace */ 475 0xffff, /* src_mask */ 476 0xffff, /* dst_mask */ 477 FALSE), /* pcrel_offset */ 478 479 /* The lower 16 bits of the GOT offset for the TLS descriptor of the 480 symbol. */ 481 HOWTO (R_FRV_GOTTLSDESCLO, /* type */ 482 0, /* rightshift */ 483 2, /* size (0 = byte, 1 = short, 2 = long) */ 484 16, /* bitsize */ 485 FALSE, /* pc_relative */ 486 0, /* bitpos */ 487 complain_overflow_dont, /* complain_on_overflow */ 488 bfd_elf_generic_reloc, /* special_function */ 489 "R_FRV_GOTTLSDESCLO", /* name */ 490 FALSE, /* partial_inplace */ 491 0xffff, /* src_mask */ 492 0xffff, /* dst_mask */ 493 FALSE), /* pcrel_offset */ 494 495 /* A 12-bit signed operand with the offset from the module base 496 address to the thread-local symbol address. */ 497 HOWTO (R_FRV_TLSMOFF12, /* type */ 498 0, /* rightshift */ 499 2, /* size (0 = byte, 1 = short, 2 = long) */ 500 12, /* bitsize */ 501 FALSE, /* pc_relative */ 502 0, /* bitpos */ 503 complain_overflow_signed, /* complain_on_overflow */ 504 bfd_elf_generic_reloc, /* special_function */ 505 "R_FRV_TLSMOFF12", /* name */ 506 FALSE, /* partial_inplace */ 507 0xfff, /* src_mask */ 508 0xfff, /* dst_mask */ 509 FALSE), /* pcrel_offset */ 510 511 /* The upper 16 bits of the offset from the module base address to 512 the thread-local symbol address. */ 513 HOWTO (R_FRV_TLSMOFFHI, /* type */ 514 0, /* rightshift */ 515 2, /* size (0 = byte, 1 = short, 2 = long) */ 516 16, /* bitsize */ 517 FALSE, /* pc_relative */ 518 0, /* bitpos */ 519 complain_overflow_dont, /* complain_on_overflow */ 520 bfd_elf_generic_reloc, /* special_function */ 521 "R_FRV_TLSMOFFHI", /* name */ 522 FALSE, /* partial_inplace */ 523 0xffff, /* src_mask */ 524 0xffff, /* dst_mask */ 525 FALSE), /* pcrel_offset */ 526 527 /* The lower 16 bits of the offset from the module base address to 528 the thread-local symbol address. */ 529 HOWTO (R_FRV_TLSMOFFLO, /* type */ 530 0, /* rightshift */ 531 2, /* size (0 = byte, 1 = short, 2 = long) */ 532 16, /* bitsize */ 533 FALSE, /* pc_relative */ 534 0, /* bitpos */ 535 complain_overflow_dont, /* complain_on_overflow */ 536 bfd_elf_generic_reloc, /* special_function */ 537 "R_FRV_TLSMOFFLO", /* name */ 538 FALSE, /* partial_inplace */ 539 0xffff, /* src_mask */ 540 0xffff, /* dst_mask */ 541 FALSE), /* pcrel_offset */ 542 543 /* A 12-bit signed operand with the GOT offset for the TLSOFF entry 544 for a symbol. */ 545 HOWTO (R_FRV_GOTTLSOFF12, /* type */ 546 0, /* rightshift */ 547 2, /* size (0 = byte, 1 = short, 2 = long) */ 548 12, /* bitsize */ 549 FALSE, /* pc_relative */ 550 0, /* bitpos */ 551 complain_overflow_signed, /* complain_on_overflow */ 552 bfd_elf_generic_reloc, /* special_function */ 553 "R_FRV_GOTTLSOFF12", /* name */ 554 FALSE, /* partial_inplace */ 555 0xfff, /* src_mask */ 556 0xfff, /* dst_mask */ 557 FALSE), /* pcrel_offset */ 558 559 /* The upper 16 bits of the GOT offset for the TLSOFF entry for a 560 symbol. */ 561 HOWTO (R_FRV_GOTTLSOFFHI, /* type */ 562 0, /* rightshift */ 563 2, /* size (0 = byte, 1 = short, 2 = long) */ 564 16, /* bitsize */ 565 FALSE, /* pc_relative */ 566 0, /* bitpos */ 567 complain_overflow_dont, /* complain_on_overflow */ 568 bfd_elf_generic_reloc, /* special_function */ 569 "R_FRV_GOTTLSOFFHI", /* name */ 570 FALSE, /* partial_inplace */ 571 0xffff, /* src_mask */ 572 0xffff, /* dst_mask */ 573 FALSE), /* pcrel_offset */ 574 575 /* The lower 16 bits of the GOT offset for the TLSOFF entry for a 576 symbol. */ 577 HOWTO (R_FRV_GOTTLSOFFLO, /* type */ 578 0, /* rightshift */ 579 2, /* size (0 = byte, 1 = short, 2 = long) */ 580 16, /* bitsize */ 581 FALSE, /* pc_relative */ 582 0, /* bitpos */ 583 complain_overflow_dont, /* complain_on_overflow */ 584 bfd_elf_generic_reloc, /* special_function */ 585 "R_FRV_GOTTLSOFFLO", /* name */ 586 FALSE, /* partial_inplace */ 587 0xffff, /* src_mask */ 588 0xffff, /* dst_mask */ 589 FALSE), /* pcrel_offset */ 590 591 /* The 32-bit offset from the thread pointer (not the module base 592 address) to a thread-local symbol. */ 593 HOWTO (R_FRV_TLSOFF, /* type */ 594 0, /* rightshift */ 595 2, /* size (0 = byte, 1 = short, 2 = long) */ 596 32, /* bitsize */ 597 FALSE, /* pc_relative */ 598 0, /* bitpos */ 599 complain_overflow_dont, /* complain_on_overflow */ 600 bfd_elf_generic_reloc, /* special_function */ 601 "R_FRV_TLSOFF", /* name */ 602 FALSE, /* partial_inplace */ 603 0xffffffff, /* src_mask */ 604 0xffffffff, /* dst_mask */ 605 FALSE), /* pcrel_offset */ 606 607 /* An annotation for linker relaxation, that denotes the 608 symbol+addend whose TLS descriptor is referenced by the sum of 609 the two input registers of an ldd instruction. */ 610 HOWTO (R_FRV_TLSDESC_RELAX, /* type */ 611 0, /* rightshift */ 612 2, /* size (0 = byte, 1 = short, 2 = long) */ 613 0, /* bitsize */ 614 FALSE, /* pc_relative */ 615 0, /* bitpos */ 616 complain_overflow_dont, /* complain_on_overflow */ 617 bfd_elf_generic_reloc, /* special_function */ 618 "R_FRV_TLSDESC_RELAX", /* name */ 619 FALSE, /* partial_inplace */ 620 0, /* src_mask */ 621 0, /* dst_mask */ 622 FALSE), /* pcrel_offset */ 623 624 /* An annotation for linker relaxation, that denotes the 625 symbol+addend whose TLS resolver entry point is given by the sum 626 of the two register operands of an calll instruction. */ 627 HOWTO (R_FRV_GETTLSOFF_RELAX, /* type */ 628 0, /* rightshift */ 629 2, /* size (0 = byte, 1 = short, 2 = long) */ 630 0, /* bitsize */ 631 FALSE, /* pc_relative */ 632 0, /* bitpos */ 633 complain_overflow_dont, /* complain_on_overflow */ 634 bfd_elf_generic_reloc, /* special_function */ 635 "R_FRV_GETTLSOFF_RELAX", /* name */ 636 FALSE, /* partial_inplace */ 637 0, /* src_mask */ 638 0, /* dst_mask */ 639 FALSE), /* pcrel_offset */ 640 641 /* An annotation for linker relaxation, that denotes the 642 symbol+addend whose TLS offset GOT entry is given by the sum of 643 the two input registers of an ld instruction. */ 644 HOWTO (R_FRV_TLSOFF_RELAX, /* type */ 645 0, /* rightshift */ 646 2, /* size (0 = byte, 1 = short, 2 = long) */ 647 0, /* bitsize */ 648 FALSE, /* pc_relative */ 649 0, /* bitpos */ 650 complain_overflow_bitfield, /* complain_on_overflow */ 651 bfd_elf_generic_reloc, /* special_function */ 652 "R_FRV_TLSOFF_RELAX", /* name */ 653 FALSE, /* partial_inplace */ 654 0, /* src_mask */ 655 0, /* dst_mask */ 656 FALSE), /* pcrel_offset */ 657 658 /* A 32-bit offset from the module base address to 659 the thread-local symbol address. */ 660 HOWTO (R_FRV_TLSMOFF, /* type */ 661 0, /* rightshift */ 662 2, /* size (0 = byte, 1 = short, 2 = long) */ 663 32, /* bitsize */ 664 FALSE, /* pc_relative */ 665 0, /* bitpos */ 666 complain_overflow_dont, /* complain_on_overflow */ 667 bfd_elf_generic_reloc, /* special_function */ 668 "R_FRV_TLSMOFF", /* name */ 669 FALSE, /* partial_inplace */ 670 0xffffffff, /* src_mask */ 671 0xffffffff, /* dst_mask */ 672 FALSE), /* pcrel_offset */ 673}; 674 675/* GNU extension to record C++ vtable hierarchy. */ 676static reloc_howto_type elf32_frv_vtinherit_howto = 677 HOWTO (R_FRV_GNU_VTINHERIT, /* type */ 678 0, /* rightshift */ 679 2, /* size (0 = byte, 1 = short, 2 = long) */ 680 0, /* bitsize */ 681 FALSE, /* pc_relative */ 682 0, /* bitpos */ 683 complain_overflow_dont, /* complain_on_overflow */ 684 NULL, /* special_function */ 685 "R_FRV_GNU_VTINHERIT", /* name */ 686 FALSE, /* partial_inplace */ 687 0, /* src_mask */ 688 0, /* dst_mask */ 689 FALSE); /* pcrel_offset */ 690 691 /* GNU extension to record C++ vtable member usage. */ 692static reloc_howto_type elf32_frv_vtentry_howto = 693 HOWTO (R_FRV_GNU_VTENTRY, /* type */ 694 0, /* rightshift */ 695 2, /* size (0 = byte, 1 = short, 2 = long) */ 696 0, /* bitsize */ 697 FALSE, /* pc_relative */ 698 0, /* bitpos */ 699 complain_overflow_dont, /* complain_on_overflow */ 700 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 701 "R_FRV_GNU_VTENTRY", /* name */ 702 FALSE, /* partial_inplace */ 703 0, /* src_mask */ 704 0, /* dst_mask */ 705 FALSE); /* pcrel_offset */ 706 707/* The following 3 relocations are REL. The only difference to the 708 entries in the table above are that partial_inplace is TRUE. */ 709static reloc_howto_type elf32_frv_rel_32_howto = 710 HOWTO (R_FRV_32, /* type */ 711 0, /* rightshift */ 712 2, /* size (0 = byte, 1 = short, 2 = long) */ 713 32, /* bitsize */ 714 FALSE, /* pc_relative */ 715 0, /* bitpos */ 716 complain_overflow_bitfield, /* complain_on_overflow */ 717 bfd_elf_generic_reloc, /* special_function */ 718 "R_FRV_32", /* name */ 719 TRUE, /* partial_inplace */ 720 0xffffffff, /* src_mask */ 721 0xffffffff, /* dst_mask */ 722 FALSE); /* pcrel_offset */ 723 724static reloc_howto_type elf32_frv_rel_funcdesc_howto = 725 HOWTO (R_FRV_FUNCDESC, /* type */ 726 0, /* rightshift */ 727 2, /* size (0 = byte, 1 = short, 2 = long) */ 728 32, /* bitsize */ 729 FALSE, /* pc_relative */ 730 0, /* bitpos */ 731 complain_overflow_bitfield, /* complain_on_overflow */ 732 bfd_elf_generic_reloc, /* special_function */ 733 "R_FRV_FUNCDESC", /* name */ 734 TRUE, /* partial_inplace */ 735 0xffffffff, /* src_mask */ 736 0xffffffff, /* dst_mask */ 737 FALSE); /* pcrel_offset */ 738 739static reloc_howto_type elf32_frv_rel_funcdesc_value_howto = 740 HOWTO (R_FRV_FUNCDESC_VALUE, /* type */ 741 0, /* rightshift */ 742 2, /* size (0 = byte, 1 = short, 2 = long) */ 743 64, /* bitsize */ 744 FALSE, /* pc_relative */ 745 0, /* bitpos */ 746 complain_overflow_bitfield, /* complain_on_overflow */ 747 bfd_elf_generic_reloc, /* special_function */ 748 "R_FRV_FUNCDESC_VALUE", /* name */ 749 TRUE, /* partial_inplace */ 750 0xffffffff, /* src_mask */ 751 0xffffffff, /* dst_mask */ 752 FALSE); /* pcrel_offset */ 753 754static reloc_howto_type elf32_frv_rel_tlsdesc_value_howto = 755 /* A 64-bit TLS descriptor for a symbol. The first word resolves to 756 an entry point, and the second resolves to a special argument. 757 If the symbol turns out to be in static TLS, the entry point is a 758 return instruction, and the special argument is the TLS offset 759 for the symbol. If it's in dynamic TLS, the entry point is a TLS 760 offset resolver, and the special argument is a pointer to a data 761 structure allocated by the dynamic loader, containing the GOT 762 address for the offset resolver, the module id, the offset within 763 the module, and anything else the TLS offset resolver might need 764 to determine the TLS offset for the symbol in the running 765 thread. */ 766 HOWTO (R_FRV_TLSDESC_VALUE, /* type */ 767 0, /* rightshift */ 768 2, /* size (0 = byte, 1 = short, 2 = long) */ 769 64, /* bitsize */ 770 FALSE, /* pc_relative */ 771 0, /* bitpos */ 772 complain_overflow_bitfield, /* complain_on_overflow */ 773 bfd_elf_generic_reloc, /* special_function */ 774 "R_FRV_TLSDESC_VALUE", /* name */ 775 TRUE, /* partial_inplace */ 776 0xffffffff, /* src_mask */ 777 0xffffffff, /* dst_mask */ 778 FALSE); /* pcrel_offset */ 779 780static reloc_howto_type elf32_frv_rel_tlsoff_howto = 781 /* The 32-bit offset from the thread pointer (not the module base 782 address) to a thread-local symbol. */ 783 HOWTO (R_FRV_TLSOFF, /* type */ 784 0, /* rightshift */ 785 2, /* size (0 = byte, 1 = short, 2 = long) */ 786 32, /* bitsize */ 787 FALSE, /* pc_relative */ 788 0, /* bitpos */ 789 complain_overflow_bitfield, /* complain_on_overflow */ 790 bfd_elf_generic_reloc, /* special_function */ 791 "R_FRV_TLSOFF", /* name */ 792 TRUE, /* partial_inplace */ 793 0xffffffff, /* src_mask */ 794 0xffffffff, /* dst_mask */ 795 FALSE); /* pcrel_offset */ 796 797 798 799extern const bfd_target frv_elf32_fdpic_vec; 800#define IS_FDPIC(bfd) ((bfd)->xvec == &frv_elf32_fdpic_vec) 801 802/* An extension of the elf hash table data structure, containing some 803 additional FRV-specific data. */ 804struct frvfdpic_elf_link_hash_table 805{ 806 struct elf_link_hash_table elf; 807 808 /* A pointer to the .rofixup section. */ 809 asection *sgotfixup; 810 /* GOT base offset. */ 811 bfd_vma got0; 812 /* Location of the first non-lazy PLT entry, i.e., the number of 813 bytes taken by lazy PLT entries. If locally-bound TLS 814 descriptors require a ret instruction, it will be placed at this 815 offset. */ 816 bfd_vma plt0; 817 /* A hash table holding information about which symbols were 818 referenced with which PIC-related relocations. */ 819 struct htab *relocs_info; 820 /* Summary reloc information collected by 821 _frvfdpic_count_got_plt_entries. */ 822 struct _frvfdpic_dynamic_got_info *g; 823}; 824 825/* Get the FRV ELF linker hash table from a link_info structure. */ 826 827#define frvfdpic_hash_table(p) \ 828 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 829 == FRV_ELF_DATA ? ((struct frvfdpic_elf_link_hash_table *) ((p)->hash)) : NULL) 830 831#define frvfdpic_got_section(info) \ 832 (frvfdpic_hash_table (info)->elf.sgot) 833#define frvfdpic_gotrel_section(info) \ 834 (frvfdpic_hash_table (info)->elf.srelgot) 835#define frvfdpic_gotfixup_section(info) \ 836 (frvfdpic_hash_table (info)->sgotfixup) 837#define frvfdpic_plt_section(info) \ 838 (frvfdpic_hash_table (info)->elf.splt) 839#define frvfdpic_pltrel_section(info) \ 840 (frvfdpic_hash_table (info)->elf.srelplt) 841#define frvfdpic_relocs_info(info) \ 842 (frvfdpic_hash_table (info)->relocs_info) 843#define frvfdpic_got_initial_offset(info) \ 844 (frvfdpic_hash_table (info)->got0) 845#define frvfdpic_plt_initial_offset(info) \ 846 (frvfdpic_hash_table (info)->plt0) 847#define frvfdpic_dynamic_got_plt_info(info) \ 848 (frvfdpic_hash_table (info)->g) 849 850/* Currently it's the same, but if some day we have a reason to change 851 it, we'd better be using a different macro. 852 853 FIXME: if there's any TLS PLT entry that uses local-exec or 854 initial-exec models, we could use the ret at the end of any of them 855 instead of adding one more. */ 856#define frvfdpic_plt_tls_ret_offset(info) \ 857 (frvfdpic_plt_initial_offset (info)) 858 859/* The name of the dynamic interpreter. This is put in the .interp 860 section. */ 861 862#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" 863 864#define DEFAULT_STACK_SIZE 0x20000 865 866/* This structure is used to collect the number of entries present in 867 each addressable range of the got. */ 868struct _frvfdpic_dynamic_got_info 869{ 870 /* Several bits of information about the current link. */ 871 struct bfd_link_info *info; 872 /* Total GOT size needed for GOT entries within the 12-, 16- or 32-bit 873 ranges. */ 874 bfd_vma got12, gotlos, gothilo; 875 /* Total GOT size needed for function descriptor entries within the 12-, 876 16- or 32-bit ranges. */ 877 bfd_vma fd12, fdlos, fdhilo; 878 /* Total GOT size needed by function descriptor entries referenced 879 in PLT entries, that would be profitable to place in offsets 880 close to the PIC register. */ 881 bfd_vma fdplt; 882 /* Total PLT size needed by lazy PLT entries. */ 883 bfd_vma lzplt; 884 /* Total GOT size needed for TLS descriptor entries within the 12-, 885 16- or 32-bit ranges. */ 886 bfd_vma tlsd12, tlsdlos, tlsdhilo; 887 /* Total GOT size needed by TLS descriptors referenced in PLT 888 entries, that would be profitable to place in offers close to the 889 PIC register. */ 890 bfd_vma tlsdplt; 891 /* Total PLT size needed by TLS lazy PLT entries. */ 892 bfd_vma tlslzplt; 893 /* Number of relocations carried over from input object files. */ 894 unsigned long relocs; 895 /* Number of fixups introduced by relocations in input object files. */ 896 unsigned long fixups; 897 /* The number of fixups that reference the ret instruction added to 898 the PLT for locally-resolved TLS descriptors. */ 899 unsigned long tls_ret_refs; 900}; 901 902/* This structure is used to assign offsets to got entries, function 903 descriptors, plt entries and lazy plt entries. */ 904 905struct _frvfdpic_dynamic_got_plt_info 906{ 907 /* Summary information collected with _frvfdpic_count_got_plt_entries. */ 908 struct _frvfdpic_dynamic_got_info g; 909 910 /* For each addressable range, we record a MAX (positive) and MIN 911 (negative) value. CUR is used to assign got entries, and it's 912 incremented from an initial positive value to MAX, then from MIN 913 to FDCUR (unless FDCUR wraps around first). FDCUR is used to 914 assign function descriptors, and it's decreased from an initial 915 non-positive value to MIN, then from MAX down to CUR (unless CUR 916 wraps around first). All of MIN, MAX, CUR and FDCUR always point 917 to even words. ODD, if non-zero, indicates an odd word to be 918 used for the next got entry, otherwise CUR is used and 919 incremented by a pair of words, wrapping around when it reaches 920 MAX. FDCUR is decremented (and wrapped) before the next function 921 descriptor is chosen. FDPLT indicates the number of remaining 922 slots that can be used for function descriptors used only by PLT 923 entries. 924 925 TMAX, TMIN and TCUR are used to assign TLS descriptors. TCUR 926 starts as MAX, and grows up to TMAX, then wraps around to TMIN 927 and grows up to MIN. TLSDPLT indicates the number of remaining 928 slots that can be used for TLS descriptors used only by TLS PLT 929 entries. */ 930 struct _frvfdpic_dynamic_got_alloc_data 931 { 932 bfd_signed_vma max, cur, odd, fdcur, min; 933 bfd_signed_vma tmax, tcur, tmin; 934 bfd_vma fdplt, tlsdplt; 935 } got12, gotlos, gothilo; 936}; 937 938/* Create an FRV ELF linker hash table. */ 939 940static struct bfd_link_hash_table * 941frvfdpic_elf_link_hash_table_create (bfd *abfd) 942{ 943 struct frvfdpic_elf_link_hash_table *ret; 944 bfd_size_type amt = sizeof (struct frvfdpic_elf_link_hash_table); 945 946 ret = bfd_zmalloc (amt); 947 if (ret == NULL) 948 return NULL; 949 950 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, 951 _bfd_elf_link_hash_newfunc, 952 sizeof (struct elf_link_hash_entry), 953 FRV_ELF_DATA)) 954 { 955 free (ret); 956 return NULL; 957 } 958 959 return &ret->elf.root; 960} 961 962/* Decide whether a reference to a symbol can be resolved locally or 963 not. If the symbol is protected, we want the local address, but 964 its function descriptor must be assigned by the dynamic linker. */ 965#define FRVFDPIC_SYM_LOCAL(INFO, H) \ 966 (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \ 967 || ! elf_hash_table (INFO)->dynamic_sections_created) 968#define FRVFDPIC_FUNCDESC_LOCAL(INFO, H) \ 969 ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created) 970 971/* This structure collects information on what kind of GOT, PLT or 972 function descriptors are required by relocations that reference a 973 certain symbol. */ 974struct frvfdpic_relocs_info 975{ 976 /* The index of the symbol, as stored in the relocation r_info, if 977 we have a local symbol; -1 otherwise. */ 978 long symndx; 979 union 980 { 981 /* The input bfd in which the symbol is defined, if it's a local 982 symbol. */ 983 bfd *abfd; 984 /* If symndx == -1, the hash table entry corresponding to a global 985 symbol (even if it turns out to bind locally, in which case it 986 should ideally be replaced with section's symndx + addend). */ 987 struct elf_link_hash_entry *h; 988 } d; 989 /* The addend of the relocation that references the symbol. */ 990 bfd_vma addend; 991 992 /* The fields above are used to identify an entry. The fields below 993 contain information on how an entry is used and, later on, which 994 locations it was assigned. */ 995 /* The following 3 fields record whether the symbol+addend above was 996 ever referenced with a GOT relocation. The 12 suffix indicates a 997 GOT12 relocation; los is used for GOTLO relocations that are not 998 matched by a GOTHI relocation; hilo is used for GOTLO/GOTHI 999 pairs. */ 1000 unsigned got12:1; 1001 unsigned gotlos:1; 1002 unsigned gothilo:1; 1003 /* Whether a FUNCDESC relocation references symbol+addend. */ 1004 unsigned fd:1; 1005 /* Whether a FUNCDESC_GOT relocation references symbol+addend. */ 1006 unsigned fdgot12:1; 1007 unsigned fdgotlos:1; 1008 unsigned fdgothilo:1; 1009 /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */ 1010 unsigned fdgoff12:1; 1011 unsigned fdgofflos:1; 1012 unsigned fdgoffhilo:1; 1013 /* Whether a GETTLSOFF relocation references symbol+addend. */ 1014 unsigned tlsplt:1; 1015 /* FIXME: we should probably add tlspltdesc, tlspltoff and 1016 tlspltimm, to tell what kind of TLS PLT entry we're generating. 1017 We might instead just pre-compute flags telling whether the 1018 object is suitable for local exec, initial exec or general 1019 dynamic addressing, and use that all over the place. We could 1020 also try to do a better job of merging TLSOFF and TLSDESC entries 1021 in main executables, but perhaps we can get rid of TLSDESC 1022 entirely in them instead. */ 1023 /* Whether a GOTTLSDESC relocation references symbol+addend. */ 1024 unsigned tlsdesc12:1; 1025 unsigned tlsdesclos:1; 1026 unsigned tlsdeschilo:1; 1027 /* Whether a GOTTLSOFF relocation references symbol+addend. */ 1028 unsigned tlsoff12:1; 1029 unsigned tlsofflos:1; 1030 unsigned tlsoffhilo:1; 1031 /* Whether symbol+addend is referenced with GOTOFF12, GOTOFFLO or 1032 GOTOFFHI relocations. The addend doesn't really matter, since we 1033 envision that this will only be used to check whether the symbol 1034 is mapped to the same segment as the got. */ 1035 unsigned gotoff:1; 1036 /* Whether symbol+addend is referenced by a LABEL24 relocation. */ 1037 unsigned call:1; 1038 /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE 1039 relocation. */ 1040 unsigned sym:1; 1041 /* Whether we need a PLT entry for a symbol. Should be implied by 1042 something like: 1043 (call && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h)) */ 1044 unsigned plt:1; 1045 /* Whether a function descriptor should be created in this link unit 1046 for symbol+addend. Should be implied by something like: 1047 (plt || fdgotoff12 || fdgotofflos || fdgotofflohi 1048 || ((fd || fdgot12 || fdgotlos || fdgothilo) 1049 && (symndx != -1 || FRVFDPIC_FUNCDESC_LOCAL (info, d.h)))) */ 1050 unsigned privfd:1; 1051 /* Whether a lazy PLT entry is needed for this symbol+addend. 1052 Should be implied by something like: 1053 (privfd && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h) 1054 && ! (info->flags & DF_BIND_NOW)) */ 1055 unsigned lazyplt:1; 1056 /* Whether we've already emitted GOT relocations and PLT entries as 1057 needed for this symbol. */ 1058 unsigned done:1; 1059 1060 /* The number of R_FRV_32, R_FRV_FUNCDESC, R_FRV_FUNCDESC_VALUE and 1061 R_FRV_TLSDESC_VALUE, R_FRV_TLSOFF relocations referencing 1062 symbol+addend. */ 1063 unsigned relocs32, relocsfd, relocsfdv, relocstlsd, relocstlsoff; 1064 1065 /* The number of .rofixups entries and dynamic relocations allocated 1066 for this symbol, minus any that might have already been used. */ 1067 unsigned fixups, dynrelocs; 1068 1069 /* The offsets of the GOT entries assigned to symbol+addend, to the 1070 function descriptor's address, and to a function descriptor, 1071 respectively. Should be zero if unassigned. The offsets are 1072 counted from the value that will be assigned to the PIC register, 1073 not from the beginning of the .got section. */ 1074 bfd_signed_vma got_entry, fdgot_entry, fd_entry; 1075 /* The offsets of the PLT entries assigned to symbol+addend, 1076 non-lazy and lazy, respectively. If unassigned, should be 1077 (bfd_vma)-1. */ 1078 bfd_vma plt_entry, lzplt_entry; 1079 /* The offsets of the GOT entries for TLS offset and TLS descriptor. */ 1080 bfd_signed_vma tlsoff_entry, tlsdesc_entry; 1081 /* The offset of the TLS offset PLT entry. */ 1082 bfd_vma tlsplt_entry; 1083}; 1084 1085/* Compute a hash with the key fields of an frvfdpic_relocs_info entry. */ 1086static hashval_t 1087frvfdpic_relocs_info_hash (const void *entry_) 1088{ 1089 const struct frvfdpic_relocs_info *entry = entry_; 1090 1091 return (entry->symndx == -1 1092 ? (long) entry->d.h->root.root.hash 1093 : entry->symndx + (long) entry->d.abfd->id * 257) + entry->addend; 1094} 1095 1096/* Test whether the key fields of two frvfdpic_relocs_info entries are 1097 identical. */ 1098static int 1099frvfdpic_relocs_info_eq (const void *entry1, const void *entry2) 1100{ 1101 const struct frvfdpic_relocs_info *e1 = entry1; 1102 const struct frvfdpic_relocs_info *e2 = entry2; 1103 1104 return e1->symndx == e2->symndx && e1->addend == e2->addend 1105 && (e1->symndx == -1 ? e1->d.h == e2->d.h : e1->d.abfd == e2->d.abfd); 1106} 1107 1108/* Find or create an entry in a hash table HT that matches the key 1109 fields of the given ENTRY. If it's not found, memory for a new 1110 entry is allocated in ABFD's obstack. */ 1111static struct frvfdpic_relocs_info * 1112frvfdpic_relocs_info_find (struct htab *ht, 1113 bfd *abfd, 1114 const struct frvfdpic_relocs_info *entry, 1115 enum insert_option insert) 1116{ 1117 struct frvfdpic_relocs_info **loc = 1118 (struct frvfdpic_relocs_info **) htab_find_slot (ht, entry, insert); 1119 1120 if (! loc) 1121 return NULL; 1122 1123 if (*loc) 1124 return *loc; 1125 1126 *loc = bfd_zalloc (abfd, sizeof (**loc)); 1127 1128 if (! *loc) 1129 return *loc; 1130 1131 (*loc)->symndx = entry->symndx; 1132 (*loc)->d = entry->d; 1133 (*loc)->addend = entry->addend; 1134 (*loc)->plt_entry = (bfd_vma)-1; 1135 (*loc)->lzplt_entry = (bfd_vma)-1; 1136 (*loc)->tlsplt_entry = (bfd_vma)-1; 1137 1138 return *loc; 1139} 1140 1141/* Obtain the address of the entry in HT associated with H's symbol + 1142 addend, creating a new entry if none existed. ABFD is only used 1143 for memory allocation purposes. */ 1144inline static struct frvfdpic_relocs_info * 1145frvfdpic_relocs_info_for_global (struct htab *ht, 1146 bfd *abfd, 1147 struct elf_link_hash_entry *h, 1148 bfd_vma addend, 1149 enum insert_option insert) 1150{ 1151 struct frvfdpic_relocs_info entry; 1152 1153 entry.symndx = -1; 1154 entry.d.h = h; 1155 entry.addend = addend; 1156 1157 return frvfdpic_relocs_info_find (ht, abfd, &entry, insert); 1158} 1159 1160/* Obtain the address of the entry in HT associated with the SYMNDXth 1161 local symbol of the input bfd ABFD, plus the addend, creating a new 1162 entry if none existed. */ 1163inline static struct frvfdpic_relocs_info * 1164frvfdpic_relocs_info_for_local (struct htab *ht, 1165 bfd *abfd, 1166 long symndx, 1167 bfd_vma addend, 1168 enum insert_option insert) 1169{ 1170 struct frvfdpic_relocs_info entry; 1171 1172 entry.symndx = symndx; 1173 entry.d.abfd = abfd; 1174 entry.addend = addend; 1175 1176 return frvfdpic_relocs_info_find (ht, abfd, &entry, insert); 1177} 1178 1179/* Merge fields set by check_relocs() of two entries that end up being 1180 mapped to the same (presumably global) symbol. */ 1181 1182inline static void 1183frvfdpic_pic_merge_early_relocs_info (struct frvfdpic_relocs_info *e2, 1184 struct frvfdpic_relocs_info const *e1) 1185{ 1186 e2->got12 |= e1->got12; 1187 e2->gotlos |= e1->gotlos; 1188 e2->gothilo |= e1->gothilo; 1189 e2->fd |= e1->fd; 1190 e2->fdgot12 |= e1->fdgot12; 1191 e2->fdgotlos |= e1->fdgotlos; 1192 e2->fdgothilo |= e1->fdgothilo; 1193 e2->fdgoff12 |= e1->fdgoff12; 1194 e2->fdgofflos |= e1->fdgofflos; 1195 e2->fdgoffhilo |= e1->fdgoffhilo; 1196 e2->tlsplt |= e1->tlsplt; 1197 e2->tlsdesc12 |= e1->tlsdesc12; 1198 e2->tlsdesclos |= e1->tlsdesclos; 1199 e2->tlsdeschilo |= e1->tlsdeschilo; 1200 e2->tlsoff12 |= e1->tlsoff12; 1201 e2->tlsofflos |= e1->tlsofflos; 1202 e2->tlsoffhilo |= e1->tlsoffhilo; 1203 e2->gotoff |= e1->gotoff; 1204 e2->call |= e1->call; 1205 e2->sym |= e1->sym; 1206} 1207 1208/* Every block of 65535 lazy PLT entries shares a single call to the 1209 resolver, inserted in the 32768th lazy PLT entry (i.e., entry # 1210 32767, counting from 0). All other lazy PLT entries branch to it 1211 in a single instruction. */ 1212 1213#define FRVFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) 8 * 65535 + 4) 1214#define FRVFDPIC_LZPLT_RESOLV_LOC (8 * 32767) 1215 1216/* Add a dynamic relocation to the SRELOC section. */ 1217 1218inline static bfd_vma 1219_frvfdpic_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset, 1220 int reloc_type, long dynindx, bfd_vma addend, 1221 struct frvfdpic_relocs_info *entry) 1222{ 1223 Elf_Internal_Rela outrel; 1224 bfd_vma reloc_offset; 1225 1226 outrel.r_offset = offset; 1227 outrel.r_info = ELF32_R_INFO (dynindx, reloc_type); 1228 outrel.r_addend = addend; 1229 1230 reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rel); 1231 BFD_ASSERT (reloc_offset < sreloc->size); 1232 bfd_elf32_swap_reloc_out (output_bfd, &outrel, 1233 sreloc->contents + reloc_offset); 1234 sreloc->reloc_count++; 1235 1236 /* If the entry's index is zero, this relocation was probably to a 1237 linkonce section that got discarded. We reserved a dynamic 1238 relocation, but it was for another entry than the one we got at 1239 the time of emitting the relocation. Unfortunately there's no 1240 simple way for us to catch this situation, since the relocation 1241 is cleared right before calling relocate_section, at which point 1242 we no longer know what the relocation used to point to. */ 1243 if (entry->symndx) 1244 { 1245 BFD_ASSERT (entry->dynrelocs > 0); 1246 entry->dynrelocs--; 1247 } 1248 1249 return reloc_offset; 1250} 1251 1252/* Add a fixup to the ROFIXUP section. */ 1253 1254static bfd_vma 1255_frvfdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma offset, 1256 struct frvfdpic_relocs_info *entry) 1257{ 1258 bfd_vma fixup_offset; 1259 1260 if (rofixup->flags & SEC_EXCLUDE) 1261 return -1; 1262 1263 fixup_offset = rofixup->reloc_count * 4; 1264 if (rofixup->contents) 1265 { 1266 BFD_ASSERT (fixup_offset < rofixup->size); 1267 bfd_put_32 (output_bfd, offset, rofixup->contents + fixup_offset); 1268 } 1269 rofixup->reloc_count++; 1270 1271 if (entry && entry->symndx) 1272 { 1273 /* See discussion about symndx == 0 in _frvfdpic_add_dyn_reloc 1274 above. */ 1275 BFD_ASSERT (entry->fixups > 0); 1276 entry->fixups--; 1277 } 1278 1279 return fixup_offset; 1280} 1281 1282/* Find the segment number in which OSEC, and output section, is 1283 located. */ 1284 1285static unsigned 1286_frvfdpic_osec_to_segment (bfd *output_bfd, asection *osec) 1287{ 1288 Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section (output_bfd, osec); 1289 1290 return (p != NULL) ? p - elf_tdata (output_bfd)->phdr : -1; 1291} 1292 1293inline static bfd_boolean 1294_frvfdpic_osec_readonly_p (bfd *output_bfd, asection *osec) 1295{ 1296 unsigned seg = _frvfdpic_osec_to_segment (output_bfd, osec); 1297 1298 return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W); 1299} 1300 1301#define FRVFDPIC_TLS_BIAS (2048 - 16) 1302 1303/* Return the base VMA address which should be subtracted from real addresses 1304 when resolving TLSMOFF relocation. 1305 This is PT_TLS segment p_vaddr, plus the 2048-16 bias. */ 1306 1307static bfd_vma 1308tls_biased_base (struct bfd_link_info *info) 1309{ 1310 /* If tls_sec is NULL, we should have signalled an error already. */ 1311 if (elf_hash_table (info)->tls_sec == NULL) 1312 return FRVFDPIC_TLS_BIAS; 1313 return elf_hash_table (info)->tls_sec->vma + FRVFDPIC_TLS_BIAS; 1314} 1315 1316/* Generate relocations for GOT entries, function descriptors, and 1317 code for PLT and lazy PLT entries. */ 1318 1319inline static bfd_boolean 1320_frvfdpic_emit_got_relocs_plt_entries (struct frvfdpic_relocs_info *entry, 1321 bfd *output_bfd, 1322 struct bfd_link_info *info, 1323 asection *sec, 1324 Elf_Internal_Sym *sym, 1325 bfd_vma addend) 1326 1327{ 1328 bfd_vma fd_lazy_rel_offset = (bfd_vma)-1; 1329 int dynindx = -1; 1330 1331 if (entry->done) 1332 return TRUE; 1333 entry->done = 1; 1334 1335 if (entry->got_entry || entry->fdgot_entry || entry->fd_entry 1336 || entry->tlsoff_entry || entry->tlsdesc_entry) 1337 { 1338 /* If the symbol is dynamic, consider it for dynamic 1339 relocations, otherwise decay to section + offset. */ 1340 if (entry->symndx == -1 && entry->d.h->dynindx != -1) 1341 dynindx = entry->d.h->dynindx; 1342 else 1343 { 1344 if (sec 1345 && sec->output_section 1346 && ! bfd_is_abs_section (sec->output_section) 1347 && ! bfd_is_und_section (sec->output_section)) 1348 dynindx = elf_section_data (sec->output_section)->dynindx; 1349 else 1350 dynindx = 0; 1351 } 1352 } 1353 1354 /* Generate relocation for GOT entry pointing to the symbol. */ 1355 if (entry->got_entry) 1356 { 1357 int idx = dynindx; 1358 bfd_vma ad = addend; 1359 1360 /* If the symbol is dynamic but binds locally, use 1361 section+offset. */ 1362 if (sec && (entry->symndx != -1 1363 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1364 { 1365 if (entry->symndx == -1) 1366 ad += entry->d.h->root.u.def.value; 1367 else 1368 ad += sym->st_value; 1369 ad += sec->output_offset; 1370 if (sec->output_section && elf_section_data (sec->output_section)) 1371 idx = elf_section_data (sec->output_section)->dynindx; 1372 else 1373 idx = 0; 1374 } 1375 1376 /* If we're linking an executable at a fixed address, we can 1377 omit the dynamic relocation as long as the symbol is local to 1378 this module. */ 1379 if (bfd_link_pde (info) 1380 && (entry->symndx != -1 1381 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1382 { 1383 if (sec) 1384 ad += sec->output_section->vma; 1385 if (entry->symndx != -1 1386 || entry->d.h->root.type != bfd_link_hash_undefweak) 1387 _frvfdpic_add_rofixup (output_bfd, 1388 frvfdpic_gotfixup_section (info), 1389 frvfdpic_got_section (info)->output_section 1390 ->vma 1391 + frvfdpic_got_section (info)->output_offset 1392 + frvfdpic_got_initial_offset (info) 1393 + entry->got_entry, entry); 1394 } 1395 else 1396 _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), 1397 _bfd_elf_section_offset 1398 (output_bfd, info, 1399 frvfdpic_got_section (info), 1400 frvfdpic_got_initial_offset (info) 1401 + entry->got_entry) 1402 + frvfdpic_got_section (info) 1403 ->output_section->vma 1404 + frvfdpic_got_section (info)->output_offset, 1405 R_FRV_32, idx, ad, entry); 1406 1407 bfd_put_32 (output_bfd, ad, 1408 frvfdpic_got_section (info)->contents 1409 + frvfdpic_got_initial_offset (info) 1410 + entry->got_entry); 1411 } 1412 1413 /* Generate relocation for GOT entry pointing to a canonical 1414 function descriptor. */ 1415 if (entry->fdgot_entry) 1416 { 1417 int reloc, idx; 1418 bfd_vma ad = 0; 1419 1420 if (! (entry->symndx == -1 1421 && entry->d.h->root.type == bfd_link_hash_undefweak 1422 && FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1423 { 1424 /* If the symbol is dynamic and there may be dynamic symbol 1425 resolution because we are, or are linked with, a shared 1426 library, emit a FUNCDESC relocation such that the dynamic 1427 linker will allocate the function descriptor. If the 1428 symbol needs a non-local function descriptor but binds 1429 locally (e.g., its visibility is protected, emit a 1430 dynamic relocation decayed to section+offset. */ 1431 if (entry->symndx == -1 1432 && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h) 1433 && FRVFDPIC_SYM_LOCAL (info, entry->d.h) 1434 && !bfd_link_pde (info)) 1435 { 1436 reloc = R_FRV_FUNCDESC; 1437 idx = elf_section_data (entry->d.h->root.u.def.section 1438 ->output_section)->dynindx; 1439 ad = entry->d.h->root.u.def.section->output_offset 1440 + entry->d.h->root.u.def.value; 1441 } 1442 else if (entry->symndx == -1 1443 && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h)) 1444 { 1445 reloc = R_FRV_FUNCDESC; 1446 idx = dynindx; 1447 ad = addend; 1448 if (ad) 1449 { 1450 (*info->callbacks->reloc_dangerous) 1451 (info, _("relocation requires zero addend"), 1452 elf_hash_table (info)->dynobj, 1453 frvfdpic_got_section (info), 1454 entry->fdgot_entry); 1455 return FALSE; 1456 } 1457 } 1458 else 1459 { 1460 /* Otherwise, we know we have a private function descriptor, 1461 so reference it directly. */ 1462 if (elf_hash_table (info)->dynamic_sections_created) 1463 BFD_ASSERT (entry->privfd); 1464 reloc = R_FRV_32; 1465 idx = elf_section_data (frvfdpic_got_section (info) 1466 ->output_section)->dynindx; 1467 ad = frvfdpic_got_section (info)->output_offset 1468 + frvfdpic_got_initial_offset (info) + entry->fd_entry; 1469 } 1470 1471 /* If there is room for dynamic symbol resolution, emit the 1472 dynamic relocation. However, if we're linking an 1473 executable at a fixed location, we won't have emitted a 1474 dynamic symbol entry for the got section, so idx will be 1475 zero, which means we can and should compute the address 1476 of the private descriptor ourselves. */ 1477 if (bfd_link_pde (info) 1478 && (entry->symndx != -1 1479 || FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h))) 1480 { 1481 ad += frvfdpic_got_section (info)->output_section->vma; 1482 _frvfdpic_add_rofixup (output_bfd, 1483 frvfdpic_gotfixup_section (info), 1484 frvfdpic_got_section (info) 1485 ->output_section->vma 1486 + frvfdpic_got_section (info) 1487 ->output_offset 1488 + frvfdpic_got_initial_offset (info) 1489 + entry->fdgot_entry, entry); 1490 } 1491 else 1492 _frvfdpic_add_dyn_reloc (output_bfd, 1493 frvfdpic_gotrel_section (info), 1494 _bfd_elf_section_offset 1495 (output_bfd, info, 1496 frvfdpic_got_section (info), 1497 frvfdpic_got_initial_offset (info) 1498 + entry->fdgot_entry) 1499 + frvfdpic_got_section (info) 1500 ->output_section->vma 1501 + frvfdpic_got_section (info) 1502 ->output_offset, 1503 reloc, idx, ad, entry); 1504 } 1505 1506 bfd_put_32 (output_bfd, ad, 1507 frvfdpic_got_section (info)->contents 1508 + frvfdpic_got_initial_offset (info) 1509 + entry->fdgot_entry); 1510 } 1511 1512 /* Generate relocation to fill in a private function descriptor in 1513 the GOT. */ 1514 if (entry->fd_entry) 1515 { 1516 int idx = dynindx; 1517 bfd_vma ad = addend; 1518 bfd_vma ofst; 1519 long lowword, highword; 1520 1521 /* If the symbol is dynamic but binds locally, use 1522 section+offset. */ 1523 if (sec && (entry->symndx != -1 1524 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1525 { 1526 if (entry->symndx == -1) 1527 ad += entry->d.h->root.u.def.value; 1528 else 1529 ad += sym->st_value; 1530 ad += sec->output_offset; 1531 if (sec->output_section && elf_section_data (sec->output_section)) 1532 idx = elf_section_data (sec->output_section)->dynindx; 1533 else 1534 idx = 0; 1535 } 1536 1537 /* If we're linking an executable at a fixed address, we can 1538 omit the dynamic relocation as long as the symbol is local to 1539 this module. */ 1540 if (bfd_link_pde (info) 1541 && (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1542 { 1543 if (sec) 1544 ad += sec->output_section->vma; 1545 ofst = 0; 1546 if (entry->symndx != -1 1547 || entry->d.h->root.type != bfd_link_hash_undefweak) 1548 { 1549 _frvfdpic_add_rofixup (output_bfd, 1550 frvfdpic_gotfixup_section (info), 1551 frvfdpic_got_section (info) 1552 ->output_section->vma 1553 + frvfdpic_got_section (info) 1554 ->output_offset 1555 + frvfdpic_got_initial_offset (info) 1556 + entry->fd_entry, entry); 1557 _frvfdpic_add_rofixup (output_bfd, 1558 frvfdpic_gotfixup_section (info), 1559 frvfdpic_got_section (info) 1560 ->output_section->vma 1561 + frvfdpic_got_section (info) 1562 ->output_offset 1563 + frvfdpic_got_initial_offset (info) 1564 + entry->fd_entry + 4, entry); 1565 } 1566 } 1567 else 1568 { 1569 ofst = 1570 _frvfdpic_add_dyn_reloc (output_bfd, 1571 entry->lazyplt 1572 ? frvfdpic_pltrel_section (info) 1573 : frvfdpic_gotrel_section (info), 1574 _bfd_elf_section_offset 1575 (output_bfd, info, 1576 frvfdpic_got_section (info), 1577 frvfdpic_got_initial_offset (info) 1578 + entry->fd_entry) 1579 + frvfdpic_got_section (info) 1580 ->output_section->vma 1581 + frvfdpic_got_section (info) 1582 ->output_offset, 1583 R_FRV_FUNCDESC_VALUE, idx, ad, entry); 1584 } 1585 1586 /* If we've omitted the dynamic relocation, just emit the fixed 1587 addresses of the symbol and of the local GOT base offset. */ 1588 if (bfd_link_pde (info) 1589 && sec 1590 && sec->output_section) 1591 { 1592 lowword = ad; 1593 highword = frvfdpic_got_section (info)->output_section->vma 1594 + frvfdpic_got_section (info)->output_offset 1595 + frvfdpic_got_initial_offset (info); 1596 } 1597 else if (entry->lazyplt) 1598 { 1599 if (ad) 1600 { 1601 (*info->callbacks->reloc_dangerous) 1602 (info, _("relocation requires zero addend"), 1603 elf_hash_table (info)->dynobj, 1604 frvfdpic_got_section (info), 1605 entry->fd_entry); 1606 return FALSE; 1607 } 1608 1609 fd_lazy_rel_offset = ofst; 1610 1611 /* A function descriptor used for lazy or local resolving is 1612 initialized such that its high word contains the output 1613 section index in which the PLT entries are located, and 1614 the low word contains the address of the lazy PLT entry 1615 entry point, that must be within the memory region 1616 assigned to that section. */ 1617 lowword = entry->lzplt_entry + 4 1618 + frvfdpic_plt_section (info)->output_offset 1619 + frvfdpic_plt_section (info)->output_section->vma; 1620 highword = _frvfdpic_osec_to_segment 1621 (output_bfd, frvfdpic_plt_section (info)->output_section); 1622 } 1623 else 1624 { 1625 /* A function descriptor for a local function gets the index 1626 of the section. For a non-local function, it's 1627 disregarded. */ 1628 lowword = ad; 1629 if (sec == NULL 1630 || (entry->symndx == -1 && entry->d.h->dynindx != -1 1631 && entry->d.h->dynindx == idx)) 1632 highword = 0; 1633 else 1634 highword = _frvfdpic_osec_to_segment 1635 (output_bfd, sec->output_section); 1636 } 1637 1638 bfd_put_32 (output_bfd, lowword, 1639 frvfdpic_got_section (info)->contents 1640 + frvfdpic_got_initial_offset (info) 1641 + entry->fd_entry); 1642 bfd_put_32 (output_bfd, highword, 1643 frvfdpic_got_section (info)->contents 1644 + frvfdpic_got_initial_offset (info) 1645 + entry->fd_entry + 4); 1646 } 1647 1648 /* Generate code for the PLT entry. */ 1649 if (entry->plt_entry != (bfd_vma) -1) 1650 { 1651 bfd_byte *plt_code = frvfdpic_plt_section (info)->contents 1652 + entry->plt_entry; 1653 1654 BFD_ASSERT (entry->fd_entry); 1655 1656 /* Figure out what kind of PLT entry we need, depending on the 1657 location of the function descriptor within the GOT. */ 1658 if (entry->fd_entry >= -(1 << (12 - 1)) 1659 && entry->fd_entry < (1 << (12 - 1))) 1660 { 1661 /* lddi @(gr15, fd_entry), gr14 */ 1662 bfd_put_32 (output_bfd, 1663 0x9cccf000 | (entry->fd_entry & ((1 << 12) - 1)), 1664 plt_code); 1665 plt_code += 4; 1666 } 1667 else 1668 { 1669 if (entry->fd_entry >= -(1 << (16 - 1)) 1670 && entry->fd_entry < (1 << (16 - 1))) 1671 { 1672 /* setlos lo(fd_entry), gr14 */ 1673 bfd_put_32 (output_bfd, 1674 0x9cfc0000 1675 | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)), 1676 plt_code); 1677 plt_code += 4; 1678 } 1679 else 1680 { 1681 /* sethi.p hi(fd_entry), gr14 1682 setlo lo(fd_entry), gr14 */ 1683 bfd_put_32 (output_bfd, 1684 0x1cf80000 1685 | ((entry->fd_entry >> 16) 1686 & (((bfd_vma)1 << 16) - 1)), 1687 plt_code); 1688 plt_code += 4; 1689 bfd_put_32 (output_bfd, 1690 0x9cf40000 1691 | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)), 1692 plt_code); 1693 plt_code += 4; 1694 } 1695 /* ldd @(gr14,gr15),gr14 */ 1696 bfd_put_32 (output_bfd, 0x9c08e14f, plt_code); 1697 plt_code += 4; 1698 } 1699 /* jmpl @(gr14,gr0) */ 1700 bfd_put_32 (output_bfd, 0x8030e000, plt_code); 1701 } 1702 1703 /* Generate code for the lazy PLT entry. */ 1704 if (entry->lzplt_entry != (bfd_vma) -1) 1705 { 1706 bfd_byte *lzplt_code = frvfdpic_plt_section (info)->contents 1707 + entry->lzplt_entry; 1708 bfd_vma resolverStub_addr; 1709 1710 bfd_put_32 (output_bfd, fd_lazy_rel_offset, lzplt_code); 1711 lzplt_code += 4; 1712 1713 resolverStub_addr = entry->lzplt_entry / FRVFDPIC_LZPLT_BLOCK_SIZE 1714 * FRVFDPIC_LZPLT_BLOCK_SIZE + FRVFDPIC_LZPLT_RESOLV_LOC; 1715 if (resolverStub_addr >= frvfdpic_plt_initial_offset (info)) 1716 resolverStub_addr = frvfdpic_plt_initial_offset (info) - 12; 1717 1718 if (entry->lzplt_entry == resolverStub_addr) 1719 { 1720 /* This is a lazy PLT entry that includes a resolver call. */ 1721 /* ldd @(gr15,gr0), gr4 1722 jmpl @(gr4,gr0) */ 1723 bfd_put_32 (output_bfd, 0x8808f140, lzplt_code); 1724 bfd_put_32 (output_bfd, 0x80304000, lzplt_code + 4); 1725 } 1726 else 1727 { 1728 /* bra resolverStub */ 1729 bfd_put_32 (output_bfd, 1730 0xc01a0000 1731 | (((resolverStub_addr - entry->lzplt_entry) 1732 / 4) & (((bfd_vma)1 << 16) - 1)), 1733 lzplt_code); 1734 } 1735 } 1736 1737 /* Generate relocation for GOT entry holding the TLS offset. */ 1738 if (entry->tlsoff_entry) 1739 { 1740 int idx = dynindx; 1741 bfd_vma ad = addend; 1742 1743 if (entry->symndx != -1 1744 || FRVFDPIC_SYM_LOCAL (info, entry->d.h)) 1745 { 1746 /* If the symbol is dynamic but binds locally, use 1747 section+offset. */ 1748 if (sec) 1749 { 1750 if (entry->symndx == -1) 1751 ad += entry->d.h->root.u.def.value; 1752 else 1753 ad += sym->st_value; 1754 ad += sec->output_offset; 1755 if (sec->output_section 1756 && elf_section_data (sec->output_section)) 1757 idx = elf_section_data (sec->output_section)->dynindx; 1758 else 1759 idx = 0; 1760 } 1761 } 1762 1763 /* *ABS*+addend is special for TLS relocations, use only the 1764 addend. */ 1765 if (bfd_link_executable (info) 1766 && idx == 0 1767 && (bfd_is_abs_section (sec) 1768 || bfd_is_und_section (sec))) 1769 ; 1770 /* If we're linking an executable, we can entirely omit the 1771 dynamic relocation if the symbol is local to this module. */ 1772 else if (bfd_link_executable (info) 1773 && (entry->symndx != -1 1774 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1775 { 1776 if (sec) 1777 ad += sec->output_section->vma - tls_biased_base (info); 1778 } 1779 else 1780 { 1781 if (idx == 0 1782 && (bfd_is_abs_section (sec) 1783 || bfd_is_und_section (sec))) 1784 { 1785 if (! elf_hash_table (info)->tls_sec) 1786 { 1787 (*info->callbacks->undefined_symbol) 1788 (info, "TLS section", elf_hash_table (info)->dynobj, 1789 frvfdpic_got_section (info), entry->tlsoff_entry, TRUE); 1790 return FALSE; 1791 } 1792 idx = elf_section_data (elf_hash_table (info)->tls_sec)->dynindx; 1793 ad += FRVFDPIC_TLS_BIAS; 1794 } 1795 _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), 1796 _bfd_elf_section_offset 1797 (output_bfd, info, 1798 frvfdpic_got_section (info), 1799 frvfdpic_got_initial_offset (info) 1800 + entry->tlsoff_entry) 1801 + frvfdpic_got_section (info) 1802 ->output_section->vma 1803 + frvfdpic_got_section (info) 1804 ->output_offset, 1805 R_FRV_TLSOFF, idx, ad, entry); 1806 } 1807 1808 bfd_put_32 (output_bfd, ad, 1809 frvfdpic_got_section (info)->contents 1810 + frvfdpic_got_initial_offset (info) 1811 + entry->tlsoff_entry); 1812 } 1813 1814 if (entry->tlsdesc_entry) 1815 { 1816 int idx = dynindx; 1817 bfd_vma ad = addend; 1818 1819 /* If the symbol is dynamic but binds locally, use 1820 section+offset. */ 1821 if (sec && (entry->symndx != -1 1822 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1823 { 1824 if (entry->symndx == -1) 1825 ad += entry->d.h->root.u.def.value; 1826 else 1827 ad += sym->st_value; 1828 ad += sec->output_offset; 1829 if (sec->output_section && elf_section_data (sec->output_section)) 1830 idx = elf_section_data (sec->output_section)->dynindx; 1831 else 1832 idx = 0; 1833 } 1834 1835 /* If we didn't set up a TLS offset entry, but we're linking an 1836 executable and the symbol binds locally, we can use the 1837 module offset in the TLS descriptor in relaxations. */ 1838 if (bfd_link_executable (info) && ! entry->tlsoff_entry) 1839 entry->tlsoff_entry = entry->tlsdesc_entry + 4; 1840 1841 if (bfd_link_pde (info) 1842 && ((idx == 0 1843 && (bfd_is_abs_section (sec) 1844 || bfd_is_und_section (sec))) 1845 || entry->symndx != -1 1846 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1847 { 1848 /* *ABS*+addend is special for TLS relocations, use only the 1849 addend for the TLS offset, and take the module id as 1850 0. */ 1851 if (idx == 0 1852 && (bfd_is_abs_section (sec) 1853 || bfd_is_und_section (sec))) 1854 ; 1855 /* For other TLS symbols that bind locally, add the section 1856 TLS offset to the addend. */ 1857 else if (sec) 1858 ad += sec->output_section->vma - tls_biased_base (info); 1859 1860 bfd_put_32 (output_bfd, 1861 frvfdpic_plt_section (info)->output_section->vma 1862 + frvfdpic_plt_section (info)->output_offset 1863 + frvfdpic_plt_tls_ret_offset (info), 1864 frvfdpic_got_section (info)->contents 1865 + frvfdpic_got_initial_offset (info) 1866 + entry->tlsdesc_entry); 1867 1868 _frvfdpic_add_rofixup (output_bfd, 1869 frvfdpic_gotfixup_section (info), 1870 frvfdpic_got_section (info) 1871 ->output_section->vma 1872 + frvfdpic_got_section (info) 1873 ->output_offset 1874 + frvfdpic_got_initial_offset (info) 1875 + entry->tlsdesc_entry, entry); 1876 1877 BFD_ASSERT (frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs); 1878 1879 /* We've used one of the reserved fixups, so discount it so 1880 that we can check at the end that we've used them 1881 all. */ 1882 frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs--; 1883 1884 /* While at that, make sure the ret instruction makes to the 1885 right location in the PLT. We could do it only when we 1886 got to 0, but since the check at the end will only print 1887 a warning, make sure we have the ret in place in case the 1888 warning is missed. */ 1889 bfd_put_32 (output_bfd, 0xc03a4000, 1890 frvfdpic_plt_section (info)->contents 1891 + frvfdpic_plt_tls_ret_offset (info)); 1892 } 1893 else 1894 { 1895 if (idx == 0 1896 && (bfd_is_abs_section (sec) 1897 || bfd_is_und_section (sec))) 1898 { 1899 if (! elf_hash_table (info)->tls_sec) 1900 { 1901 (*info->callbacks->undefined_symbol) 1902 (info, "TLS section", elf_hash_table (info)->dynobj, 1903 frvfdpic_got_section (info), entry->tlsdesc_entry, TRUE); 1904 return FALSE; 1905 } 1906 idx = elf_section_data (elf_hash_table (info)->tls_sec)->dynindx; 1907 ad += FRVFDPIC_TLS_BIAS; 1908 } 1909 1910 _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), 1911 _bfd_elf_section_offset 1912 (output_bfd, info, 1913 frvfdpic_got_section (info), 1914 frvfdpic_got_initial_offset (info) 1915 + entry->tlsdesc_entry) 1916 + frvfdpic_got_section (info) 1917 ->output_section->vma 1918 + frvfdpic_got_section (info) 1919 ->output_offset, 1920 R_FRV_TLSDESC_VALUE, idx, ad, entry); 1921 1922 bfd_put_32 (output_bfd, 0, 1923 frvfdpic_got_section (info)->contents 1924 + frvfdpic_got_initial_offset (info) 1925 + entry->tlsdesc_entry); 1926 } 1927 1928 bfd_put_32 (output_bfd, ad, 1929 frvfdpic_got_section (info)->contents 1930 + frvfdpic_got_initial_offset (info) 1931 + entry->tlsdesc_entry + 4); 1932 } 1933 1934 /* Generate code for the get-TLS-offset PLT entry. */ 1935 if (entry->tlsplt_entry != (bfd_vma) -1) 1936 { 1937 bfd_byte *plt_code = frvfdpic_plt_section (info)->contents 1938 + entry->tlsplt_entry; 1939 1940 if (bfd_link_executable (info) 1941 && (entry->symndx != -1 1942 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1943 { 1944 int idx = dynindx; 1945 bfd_vma ad = addend; 1946 1947 /* sec may be NULL when referencing an undefweak symbol 1948 while linking a static executable. */ 1949 if (!sec) 1950 { 1951 BFD_ASSERT (entry->symndx == -1 1952 && entry->d.h->root.type == bfd_link_hash_undefweak); 1953 } 1954 else 1955 { 1956 if (entry->symndx == -1) 1957 ad += entry->d.h->root.u.def.value; 1958 else 1959 ad += sym->st_value; 1960 ad += sec->output_offset; 1961 if (sec->output_section 1962 && elf_section_data (sec->output_section)) 1963 idx = elf_section_data (sec->output_section)->dynindx; 1964 else 1965 idx = 0; 1966 } 1967 1968 /* *ABS*+addend is special for TLS relocations, use only the 1969 addend for the TLS offset, and take the module id as 1970 0. */ 1971 if (idx == 0 1972 && (bfd_is_abs_section (sec) 1973 || bfd_is_und_section (sec))) 1974 ; 1975 /* For other TLS symbols that bind locally, add the section 1976 TLS offset to the addend. */ 1977 else if (sec) 1978 ad += sec->output_section->vma - tls_biased_base (info); 1979 1980 if ((bfd_signed_vma)ad >= -(1 << (16 - 1)) 1981 && (bfd_signed_vma)ad < (1 << (16 - 1))) 1982 { 1983 /* setlos lo(ad), gr9 */ 1984 bfd_put_32 (output_bfd, 1985 0x92fc0000 1986 | (ad 1987 & (((bfd_vma)1 << 16) - 1)), 1988 plt_code); 1989 plt_code += 4; 1990 } 1991 else 1992 { 1993 /* sethi.p hi(ad), gr9 1994 setlo lo(ad), gr9 */ 1995 bfd_put_32 (output_bfd, 1996 0x12f80000 1997 | ((ad >> 16) 1998 & (((bfd_vma)1 << 16) - 1)), 1999 plt_code); 2000 plt_code += 4; 2001 bfd_put_32 (output_bfd, 2002 0x92f40000 2003 | (ad 2004 & (((bfd_vma)1 << 16) - 1)), 2005 plt_code); 2006 plt_code += 4; 2007 } 2008 /* ret */ 2009 bfd_put_32 (output_bfd, 0xc03a4000, plt_code); 2010 } 2011 else if (entry->tlsoff_entry) 2012 { 2013 /* Figure out what kind of PLT entry we need, depending on the 2014 location of the TLS descriptor within the GOT. */ 2015 if (entry->tlsoff_entry >= -(1 << (12 - 1)) 2016 && entry->tlsoff_entry < (1 << (12 - 1))) 2017 { 2018 /* ldi @(gr15, tlsoff_entry), gr9 */ 2019 bfd_put_32 (output_bfd, 2020 0x92c8f000 | (entry->tlsoff_entry 2021 & ((1 << 12) - 1)), 2022 plt_code); 2023 plt_code += 4; 2024 } 2025 else 2026 { 2027 if (entry->tlsoff_entry >= -(1 << (16 - 1)) 2028 && entry->tlsoff_entry < (1 << (16 - 1))) 2029 { 2030 /* setlos lo(tlsoff_entry), gr8 */ 2031 bfd_put_32 (output_bfd, 2032 0x90fc0000 2033 | (entry->tlsoff_entry 2034 & (((bfd_vma)1 << 16) - 1)), 2035 plt_code); 2036 plt_code += 4; 2037 } 2038 else 2039 { 2040 /* sethi.p hi(tlsoff_entry), gr8 2041 setlo lo(tlsoff_entry), gr8 */ 2042 bfd_put_32 (output_bfd, 2043 0x10f80000 2044 | ((entry->tlsoff_entry >> 16) 2045 & (((bfd_vma)1 << 16) - 1)), 2046 plt_code); 2047 plt_code += 4; 2048 bfd_put_32 (output_bfd, 2049 0x90f40000 2050 | (entry->tlsoff_entry 2051 & (((bfd_vma)1 << 16) - 1)), 2052 plt_code); 2053 plt_code += 4; 2054 } 2055 /* ld @(gr15,gr8),gr9 */ 2056 bfd_put_32 (output_bfd, 0x9008f108, plt_code); 2057 plt_code += 4; 2058 } 2059 /* ret */ 2060 bfd_put_32 (output_bfd, 0xc03a4000, plt_code); 2061 } 2062 else 2063 { 2064 BFD_ASSERT (entry->tlsdesc_entry); 2065 2066 /* Figure out what kind of PLT entry we need, depending on the 2067 location of the TLS descriptor within the GOT. */ 2068 if (entry->tlsdesc_entry >= -(1 << (12 - 1)) 2069 && entry->tlsdesc_entry < (1 << (12 - 1))) 2070 { 2071 /* lddi @(gr15, tlsdesc_entry), gr8 */ 2072 bfd_put_32 (output_bfd, 2073 0x90ccf000 | (entry->tlsdesc_entry 2074 & ((1 << 12) - 1)), 2075 plt_code); 2076 plt_code += 4; 2077 } 2078 else 2079 { 2080 if (entry->tlsdesc_entry >= -(1 << (16 - 1)) 2081 && entry->tlsdesc_entry < (1 << (16 - 1))) 2082 { 2083 /* setlos lo(tlsdesc_entry), gr8 */ 2084 bfd_put_32 (output_bfd, 2085 0x90fc0000 2086 | (entry->tlsdesc_entry 2087 & (((bfd_vma)1 << 16) - 1)), 2088 plt_code); 2089 plt_code += 4; 2090 } 2091 else 2092 { 2093 /* sethi.p hi(tlsdesc_entry), gr8 2094 setlo lo(tlsdesc_entry), gr8 */ 2095 bfd_put_32 (output_bfd, 2096 0x10f80000 2097 | ((entry->tlsdesc_entry >> 16) 2098 & (((bfd_vma)1 << 16) - 1)), 2099 plt_code); 2100 plt_code += 4; 2101 bfd_put_32 (output_bfd, 2102 0x90f40000 2103 | (entry->tlsdesc_entry 2104 & (((bfd_vma)1 << 16) - 1)), 2105 plt_code); 2106 plt_code += 4; 2107 } 2108 /* ldd @(gr15,gr8),gr8 */ 2109 bfd_put_32 (output_bfd, 0x9008f148, plt_code); 2110 plt_code += 4; 2111 } 2112 /* jmpl @(gr8,gr0) */ 2113 bfd_put_32 (output_bfd, 0x80308000, plt_code); 2114 } 2115 } 2116 2117 return TRUE; 2118} 2119 2120/* Handle an FRV small data reloc. */ 2121 2122static bfd_reloc_status_type 2123elf32_frv_relocate_gprel12 (struct bfd_link_info *info, 2124 bfd *input_bfd, 2125 asection *input_section, 2126 Elf_Internal_Rela *relocation, 2127 bfd_byte *contents, 2128 bfd_vma value) 2129{ 2130 bfd_vma insn; 2131 bfd_vma gp; 2132 struct bfd_link_hash_entry *h; 2133 2134 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 2135 2136 gp = (h->u.def.value 2137 + h->u.def.section->output_section->vma 2138 + h->u.def.section->output_offset); 2139 2140 value -= input_section->output_section->vma; 2141 value -= (gp - input_section->output_section->vma); 2142 2143 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 2144 2145 value += relocation->r_addend; 2146 2147 if ((long) value > 0x7ff || (long) value < -0x800) 2148 return bfd_reloc_overflow; 2149 2150 bfd_put_32 (input_bfd, 2151 (insn & 0xfffff000) | (value & 0xfff), 2152 contents + relocation->r_offset); 2153 2154 return bfd_reloc_ok; 2155} 2156 2157/* Handle an FRV small data reloc. for the u12 field. */ 2158 2159static bfd_reloc_status_type 2160elf32_frv_relocate_gprelu12 (struct bfd_link_info *info, 2161 bfd *input_bfd, 2162 asection *input_section, 2163 Elf_Internal_Rela *relocation, 2164 bfd_byte *contents, 2165 bfd_vma value) 2166{ 2167 bfd_vma insn; 2168 bfd_vma gp; 2169 struct bfd_link_hash_entry *h; 2170 bfd_vma mask; 2171 2172 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 2173 2174 gp = (h->u.def.value 2175 + h->u.def.section->output_section->vma 2176 + h->u.def.section->output_offset); 2177 2178 value -= input_section->output_section->vma; 2179 value -= (gp - input_section->output_section->vma); 2180 2181 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 2182 2183 value += relocation->r_addend; 2184 2185 if ((long) value > 0x7ff || (long) value < -0x800) 2186 return bfd_reloc_overflow; 2187 2188 /* The high 6 bits go into bits 17-12. The low 6 bits go into bits 5-0. */ 2189 mask = 0x3f03f; 2190 insn = (insn & ~mask) | ((value & 0xfc0) << 12) | (value & 0x3f); 2191 2192 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); 2193 2194 return bfd_reloc_ok; 2195} 2196 2197/* Handle an FRV ELF HI16 reloc. */ 2198 2199static bfd_reloc_status_type 2200elf32_frv_relocate_hi16 (bfd *input_bfd, 2201 Elf_Internal_Rela *relhi, 2202 bfd_byte *contents, 2203 bfd_vma value) 2204{ 2205 bfd_vma insn; 2206 2207 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); 2208 2209 value += relhi->r_addend; 2210 value = ((value >> 16) & 0xffff); 2211 2212 insn = (insn & 0xffff0000) | value; 2213 2214 if ((long) value > 0xffff || (long) value < -0x10000) 2215 return bfd_reloc_overflow; 2216 2217 bfd_put_32 (input_bfd, insn, contents + relhi->r_offset); 2218 return bfd_reloc_ok; 2219 2220} 2221static bfd_reloc_status_type 2222elf32_frv_relocate_lo16 (bfd *input_bfd, 2223 Elf_Internal_Rela *rello, 2224 bfd_byte *contents, 2225 bfd_vma value) 2226{ 2227 bfd_vma insn; 2228 2229 insn = bfd_get_32 (input_bfd, contents + rello->r_offset); 2230 2231 value += rello->r_addend; 2232 value = value & 0xffff; 2233 2234 insn = (insn & 0xffff0000) | value; 2235 2236 if ((long) value > 0xffff || (long) value < -0x10000) 2237 return bfd_reloc_overflow; 2238 2239 bfd_put_32 (input_bfd, insn, contents + rello->r_offset); 2240 return bfd_reloc_ok; 2241} 2242 2243/* Perform the relocation for the CALL label24 instruction. */ 2244 2245static bfd_reloc_status_type 2246elf32_frv_relocate_label24 (bfd *input_bfd, 2247 asection *input_section, 2248 Elf_Internal_Rela *rello, 2249 bfd_byte *contents, 2250 bfd_vma value) 2251{ 2252 bfd_vma insn; 2253 bfd_vma label6; 2254 bfd_vma label18; 2255 2256 /* The format for the call instruction is: 2257 2258 0 000000 0001111 000000000000000000 2259 label6 opcode label18 2260 2261 The branch calculation is: pc + (4*label24) 2262 where label24 is the concatenation of label6 and label18. */ 2263 2264 /* Grab the instruction. */ 2265 insn = bfd_get_32 (input_bfd, contents + rello->r_offset); 2266 2267 value -= input_section->output_section->vma + input_section->output_offset; 2268 value -= rello->r_offset; 2269 value += rello->r_addend; 2270 2271 value = value >> 2; 2272 2273 label6 = value & 0xfc0000; 2274 label6 = label6 << 7; 2275 2276 label18 = value & 0x3ffff; 2277 2278 insn = insn & 0x803c0000; 2279 insn = insn | label6; 2280 insn = insn | label18; 2281 2282 bfd_put_32 (input_bfd, insn, contents + rello->r_offset); 2283 2284 return bfd_reloc_ok; 2285} 2286 2287static bfd_reloc_status_type 2288elf32_frv_relocate_gprelhi (struct bfd_link_info *info, 2289 bfd *input_bfd, 2290 asection *input_section, 2291 Elf_Internal_Rela *relocation, 2292 bfd_byte *contents, 2293 bfd_vma value) 2294{ 2295 bfd_vma insn; 2296 bfd_vma gp; 2297 struct bfd_link_hash_entry *h; 2298 2299 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 2300 2301 gp = (h->u.def.value 2302 + h->u.def.section->output_section->vma 2303 + h->u.def.section->output_offset); 2304 2305 value -= input_section->output_section->vma; 2306 value -= (gp - input_section->output_section->vma); 2307 value += relocation->r_addend; 2308 value = ((value >> 16) & 0xffff); 2309 2310 if ((long) value > 0xffff || (long) value < -0x10000) 2311 return bfd_reloc_overflow; 2312 2313 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 2314 insn = (insn & 0xffff0000) | value; 2315 2316 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); 2317 return bfd_reloc_ok; 2318} 2319 2320static bfd_reloc_status_type 2321elf32_frv_relocate_gprello (struct bfd_link_info *info, 2322 bfd *input_bfd, 2323 asection *input_section, 2324 Elf_Internal_Rela *relocation, 2325 bfd_byte *contents, 2326 bfd_vma value) 2327{ 2328 bfd_vma insn; 2329 bfd_vma gp; 2330 struct bfd_link_hash_entry *h; 2331 2332 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 2333 2334 gp = (h->u.def.value 2335 + h->u.def.section->output_section->vma 2336 + h->u.def.section->output_offset); 2337 2338 value -= input_section->output_section->vma; 2339 value -= (gp - input_section->output_section->vma); 2340 value += relocation->r_addend; 2341 value = value & 0xffff; 2342 2343 if ((long) value > 0xffff || (long) value < -0x10000) 2344 return bfd_reloc_overflow; 2345 2346 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 2347 insn = (insn & 0xffff0000) | value; 2348 2349 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); 2350 2351 return bfd_reloc_ok; 2352} 2353 2354static reloc_howto_type * 2355frv_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, 2356 bfd_reloc_code_real_type code) 2357{ 2358 switch (code) 2359 { 2360 default: 2361 break; 2362 2363 case BFD_RELOC_NONE: 2364 return &elf32_frv_howto_table[ (int) R_FRV_NONE]; 2365 2366 case BFD_RELOC_32: 2367 if (elf_elfheader (abfd)->e_type == ET_EXEC 2368 || elf_elfheader (abfd)->e_type == ET_DYN) 2369 return &elf32_frv_rel_32_howto; 2370 /* Fall through. */ 2371 case BFD_RELOC_CTOR: 2372 return &elf32_frv_howto_table[ (int) R_FRV_32]; 2373 2374 case BFD_RELOC_FRV_LABEL16: 2375 return &elf32_frv_howto_table[ (int) R_FRV_LABEL16]; 2376 2377 case BFD_RELOC_FRV_LABEL24: 2378 return &elf32_frv_howto_table[ (int) R_FRV_LABEL24]; 2379 2380 case BFD_RELOC_FRV_LO16: 2381 return &elf32_frv_howto_table[ (int) R_FRV_LO16]; 2382 2383 case BFD_RELOC_FRV_HI16: 2384 return &elf32_frv_howto_table[ (int) R_FRV_HI16]; 2385 2386 case BFD_RELOC_FRV_GPREL12: 2387 return &elf32_frv_howto_table[ (int) R_FRV_GPREL12]; 2388 2389 case BFD_RELOC_FRV_GPRELU12: 2390 return &elf32_frv_howto_table[ (int) R_FRV_GPRELU12]; 2391 2392 case BFD_RELOC_FRV_GPREL32: 2393 return &elf32_frv_howto_table[ (int) R_FRV_GPREL32]; 2394 2395 case BFD_RELOC_FRV_GPRELHI: 2396 return &elf32_frv_howto_table[ (int) R_FRV_GPRELHI]; 2397 2398 case BFD_RELOC_FRV_GPRELLO: 2399 return &elf32_frv_howto_table[ (int) R_FRV_GPRELLO]; 2400 2401 case BFD_RELOC_FRV_GOT12: 2402 return &elf32_frv_howto_table[ (int) R_FRV_GOT12]; 2403 2404 case BFD_RELOC_FRV_GOTHI: 2405 return &elf32_frv_howto_table[ (int) R_FRV_GOTHI]; 2406 2407 case BFD_RELOC_FRV_GOTLO: 2408 return &elf32_frv_howto_table[ (int) R_FRV_GOTLO]; 2409 2410 case BFD_RELOC_FRV_FUNCDESC: 2411 if (elf_elfheader (abfd)->e_type == ET_EXEC 2412 || elf_elfheader (abfd)->e_type == ET_DYN) 2413 return &elf32_frv_rel_funcdesc_howto; 2414 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC]; 2415 2416 case BFD_RELOC_FRV_FUNCDESC_GOT12: 2417 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOT12]; 2418 2419 case BFD_RELOC_FRV_FUNCDESC_GOTHI: 2420 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTHI]; 2421 2422 case BFD_RELOC_FRV_FUNCDESC_GOTLO: 2423 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTLO]; 2424 2425 case BFD_RELOC_FRV_FUNCDESC_VALUE: 2426 if (elf_elfheader (abfd)->e_type == ET_EXEC 2427 || elf_elfheader (abfd)->e_type == ET_DYN) 2428 return &elf32_frv_rel_funcdesc_value_howto; 2429 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_VALUE]; 2430 2431 case BFD_RELOC_FRV_FUNCDESC_GOTOFF12: 2432 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFF12]; 2433 2434 case BFD_RELOC_FRV_FUNCDESC_GOTOFFHI: 2435 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFHI]; 2436 2437 case BFD_RELOC_FRV_FUNCDESC_GOTOFFLO: 2438 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFLO]; 2439 2440 case BFD_RELOC_FRV_GOTOFF12: 2441 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFF12]; 2442 2443 case BFD_RELOC_FRV_GOTOFFHI: 2444 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFHI]; 2445 2446 case BFD_RELOC_FRV_GOTOFFLO: 2447 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFLO]; 2448 2449 case BFD_RELOC_FRV_GETTLSOFF: 2450 return &elf32_frv_howto_table[ (int) R_FRV_GETTLSOFF]; 2451 2452 case BFD_RELOC_FRV_TLSDESC_VALUE: 2453 if (elf_elfheader (abfd)->e_type == ET_EXEC 2454 || elf_elfheader (abfd)->e_type == ET_DYN) 2455 return &elf32_frv_rel_tlsdesc_value_howto; 2456 return &elf32_frv_howto_table[ (int) R_FRV_TLSDESC_VALUE]; 2457 2458 case BFD_RELOC_FRV_GOTTLSDESC12: 2459 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESC12]; 2460 2461 case BFD_RELOC_FRV_GOTTLSDESCHI: 2462 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESCHI]; 2463 2464 case BFD_RELOC_FRV_GOTTLSDESCLO: 2465 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESCLO]; 2466 2467 case BFD_RELOC_FRV_TLSMOFF12: 2468 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFF12]; 2469 2470 case BFD_RELOC_FRV_TLSMOFFHI: 2471 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFFHI]; 2472 2473 case BFD_RELOC_FRV_TLSMOFFLO: 2474 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFFLO]; 2475 2476 case BFD_RELOC_FRV_GOTTLSOFF12: 2477 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFF12]; 2478 2479 case BFD_RELOC_FRV_GOTTLSOFFHI: 2480 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFFHI]; 2481 2482 case BFD_RELOC_FRV_GOTTLSOFFLO: 2483 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFFLO]; 2484 2485 case BFD_RELOC_FRV_TLSOFF: 2486 if (elf_elfheader (abfd)->e_type == ET_EXEC 2487 || elf_elfheader (abfd)->e_type == ET_DYN) 2488 return &elf32_frv_rel_tlsoff_howto; 2489 return &elf32_frv_howto_table[ (int) R_FRV_TLSOFF]; 2490 2491 case BFD_RELOC_FRV_TLSDESC_RELAX: 2492 return &elf32_frv_howto_table[ (int) R_FRV_TLSDESC_RELAX]; 2493 2494 case BFD_RELOC_FRV_GETTLSOFF_RELAX: 2495 return &elf32_frv_howto_table[ (int) R_FRV_GETTLSOFF_RELAX]; 2496 2497 case BFD_RELOC_FRV_TLSOFF_RELAX: 2498 return &elf32_frv_howto_table[ (int) R_FRV_TLSOFF_RELAX]; 2499 2500 case BFD_RELOC_FRV_TLSMOFF: 2501 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFF]; 2502 2503 case BFD_RELOC_VTABLE_INHERIT: 2504 return &elf32_frv_vtinherit_howto; 2505 2506 case BFD_RELOC_VTABLE_ENTRY: 2507 return &elf32_frv_vtentry_howto; 2508 } 2509 2510 return NULL; 2511} 2512 2513static reloc_howto_type * 2514frv_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) 2515{ 2516 unsigned int i; 2517 2518 for (i = 0; 2519 i < sizeof (elf32_frv_howto_table) / sizeof (elf32_frv_howto_table[0]); 2520 i++) 2521 if (elf32_frv_howto_table[i].name != NULL 2522 && strcasecmp (elf32_frv_howto_table[i].name, r_name) == 0) 2523 return &elf32_frv_howto_table[i]; 2524 2525 if (strcasecmp (elf32_frv_vtinherit_howto.name, r_name) == 0) 2526 return &elf32_frv_vtinherit_howto; 2527 if (strcasecmp (elf32_frv_vtentry_howto.name, r_name) == 0) 2528 return &elf32_frv_vtentry_howto; 2529 2530 return NULL; 2531} 2532 2533/* Set the howto pointer for an FRV ELF reloc. */ 2534 2535static void 2536frv_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, 2537 arelent *cache_ptr, 2538 Elf_Internal_Rela *dst) 2539{ 2540 unsigned int r_type; 2541 2542 r_type = ELF32_R_TYPE (dst->r_info); 2543 switch (r_type) 2544 { 2545 case R_FRV_GNU_VTINHERIT: 2546 cache_ptr->howto = &elf32_frv_vtinherit_howto; 2547 break; 2548 2549 case R_FRV_GNU_VTENTRY: 2550 cache_ptr->howto = &elf32_frv_vtentry_howto; 2551 break; 2552 2553 default: 2554 if (r_type >= (unsigned int) R_FRV_max) 2555 { 2556 /* xgettext:c-format */ 2557 _bfd_error_handler (_("%B: invalid FRV reloc number: %d"), abfd, r_type); 2558 r_type = 0; 2559 } 2560 cache_ptr->howto = & elf32_frv_howto_table [r_type]; 2561 break; 2562 } 2563} 2564 2565/* Set the howto pointer for an FRV ELF REL reloc. */ 2566static void 2567frvfdpic_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, 2568 arelent *cache_ptr, Elf_Internal_Rela *dst) 2569{ 2570 unsigned int r_type; 2571 2572 r_type = ELF32_R_TYPE (dst->r_info); 2573 switch (r_type) 2574 { 2575 case R_FRV_32: 2576 cache_ptr->howto = &elf32_frv_rel_32_howto; 2577 break; 2578 2579 case R_FRV_FUNCDESC: 2580 cache_ptr->howto = &elf32_frv_rel_funcdesc_howto; 2581 break; 2582 2583 case R_FRV_FUNCDESC_VALUE: 2584 cache_ptr->howto = &elf32_frv_rel_funcdesc_value_howto; 2585 break; 2586 2587 case R_FRV_TLSDESC_VALUE: 2588 cache_ptr->howto = &elf32_frv_rel_tlsdesc_value_howto; 2589 break; 2590 2591 case R_FRV_TLSOFF: 2592 cache_ptr->howto = &elf32_frv_rel_tlsoff_howto; 2593 break; 2594 2595 default: 2596 cache_ptr->howto = NULL; 2597 break; 2598 } 2599} 2600 2601/* Perform a single relocation. By default we use the standard BFD 2602 routines, but a few relocs, we have to do them ourselves. */ 2603 2604static bfd_reloc_status_type 2605frv_final_link_relocate (reloc_howto_type *howto, 2606 bfd *input_bfd, 2607 asection *input_section, 2608 bfd_byte *contents, 2609 Elf_Internal_Rela *rel, 2610 bfd_vma relocation) 2611{ 2612 return _bfd_final_link_relocate (howto, input_bfd, input_section, 2613 contents, rel->r_offset, relocation, 2614 rel->r_addend); 2615} 2616 2617 2618/* Relocate an FRV ELF section. 2619 2620 The RELOCATE_SECTION function is called by the new ELF backend linker 2621 to handle the relocations for a section. 2622 2623 The relocs are always passed as Rela structures; if the section 2624 actually uses Rel structures, the r_addend field will always be 2625 zero. 2626 2627 This function is responsible for adjusting the section contents as 2628 necessary, and (if using Rela relocs and generating a relocatable 2629 output file) adjusting the reloc addend as necessary. 2630 2631 This function does not have to worry about setting the reloc 2632 address or the reloc symbol index. 2633 2634 LOCAL_SYMS is a pointer to the swapped in local symbols. 2635 2636 LOCAL_SECTIONS is an array giving the section in the input file 2637 corresponding to the st_shndx field of each local symbol. 2638 2639 The global hash table entry for the global symbols can be found 2640 via elf_sym_hashes (input_bfd). 2641 2642 When generating relocatable output, this function must handle 2643 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 2644 going to be the section symbol corresponding to the output 2645 section, which means that the addend must be adjusted 2646 accordingly. */ 2647 2648static bfd_boolean 2649elf32_frv_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, 2650 struct bfd_link_info *info, 2651 bfd *input_bfd, 2652 asection *input_section, 2653 bfd_byte *contents, 2654 Elf_Internal_Rela *relocs, 2655 Elf_Internal_Sym *local_syms, 2656 asection **local_sections) 2657{ 2658 Elf_Internal_Shdr *symtab_hdr; 2659 struct elf_link_hash_entry **sym_hashes; 2660 Elf_Internal_Rela *rel; 2661 Elf_Internal_Rela *relend; 2662 unsigned isec_segment, got_segment, plt_segment, gprel_segment, tls_segment, 2663 check_segment[2]; 2664 int silence_segment_error = !bfd_link_pic (info); 2665 unsigned long insn; 2666 2667 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; 2668 sym_hashes = elf_sym_hashes (input_bfd); 2669 relend = relocs + input_section->reloc_count; 2670 2671 isec_segment = _frvfdpic_osec_to_segment (output_bfd, 2672 input_section->output_section); 2673 if (IS_FDPIC (output_bfd) && frvfdpic_got_section (info)) 2674 got_segment = _frvfdpic_osec_to_segment (output_bfd, 2675 frvfdpic_got_section (info) 2676 ->output_section); 2677 else 2678 got_segment = -1; 2679 if (IS_FDPIC (output_bfd) && frvfdpic_gotfixup_section (info)) 2680 gprel_segment = _frvfdpic_osec_to_segment (output_bfd, 2681 frvfdpic_gotfixup_section (info) 2682 ->output_section); 2683 else 2684 gprel_segment = -1; 2685 if (IS_FDPIC (output_bfd) && frvfdpic_plt_section (info)) 2686 plt_segment = _frvfdpic_osec_to_segment (output_bfd, 2687 frvfdpic_plt_section (info) 2688 ->output_section); 2689 else 2690 plt_segment = -1; 2691 if (elf_hash_table (info)->tls_sec) 2692 tls_segment = _frvfdpic_osec_to_segment (output_bfd, 2693 elf_hash_table (info)->tls_sec); 2694 else 2695 tls_segment = -1; 2696 2697 for (rel = relocs; rel < relend; rel ++) 2698 { 2699 reloc_howto_type *howto; 2700 unsigned long r_symndx; 2701 Elf_Internal_Sym *sym; 2702 asection *sec; 2703 struct elf_link_hash_entry *h; 2704 bfd_vma relocation; 2705 bfd_reloc_status_type r; 2706 const char *name; 2707 int r_type; 2708 asection *osec; 2709 struct frvfdpic_relocs_info *picrel; 2710 bfd_vma orig_addend = rel->r_addend; 2711 2712 r_type = ELF32_R_TYPE (rel->r_info); 2713 2714 if ( r_type == R_FRV_GNU_VTINHERIT 2715 || r_type == R_FRV_GNU_VTENTRY) 2716 continue; 2717 2718 r_symndx = ELF32_R_SYM (rel->r_info); 2719 howto = elf32_frv_howto_table + ELF32_R_TYPE (rel->r_info); 2720 h = NULL; 2721 sym = NULL; 2722 sec = NULL; 2723 2724 if (r_symndx < symtab_hdr->sh_info) 2725 { 2726 sym = local_syms + r_symndx; 2727 osec = sec = local_sections [r_symndx]; 2728 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2729 2730 name = bfd_elf_string_from_elf_section 2731 (input_bfd, symtab_hdr->sh_link, sym->st_name); 2732 if (name == NULL || name[0] == 0) 2733 name = bfd_section_name (input_bfd, sec); 2734 } 2735 else 2736 { 2737 bfd_boolean warned, ignored; 2738 bfd_boolean unresolved_reloc; 2739 2740 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 2741 r_symndx, symtab_hdr, sym_hashes, 2742 h, sec, relocation, 2743 unresolved_reloc, warned, ignored); 2744 osec = sec; 2745 name = h->root.root.string; 2746 } 2747 2748 if (sec != NULL && discarded_section (sec)) 2749 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 2750 rel, 1, relend, howto, 0, contents); 2751 2752 if (bfd_link_relocatable (info)) 2753 continue; 2754 2755 if (r_type != R_FRV_TLSMOFF 2756 && h != NULL 2757 && (h->root.type == bfd_link_hash_defined 2758 || h->root.type == bfd_link_hash_defweak) 2759 && !FRVFDPIC_SYM_LOCAL (info, h)) 2760 { 2761 osec = sec = NULL; 2762 relocation = 0; 2763 } 2764 2765 switch (r_type) 2766 { 2767 case R_FRV_LABEL24: 2768 case R_FRV_32: 2769 if (! IS_FDPIC (output_bfd)) 2770 goto non_fdpic; 2771 /* Fall through. */ 2772 2773 case R_FRV_GOT12: 2774 case R_FRV_GOTHI: 2775 case R_FRV_GOTLO: 2776 case R_FRV_FUNCDESC_GOT12: 2777 case R_FRV_FUNCDESC_GOTHI: 2778 case R_FRV_FUNCDESC_GOTLO: 2779 case R_FRV_GOTOFF12: 2780 case R_FRV_GOTOFFHI: 2781 case R_FRV_GOTOFFLO: 2782 case R_FRV_FUNCDESC_GOTOFF12: 2783 case R_FRV_FUNCDESC_GOTOFFHI: 2784 case R_FRV_FUNCDESC_GOTOFFLO: 2785 case R_FRV_FUNCDESC: 2786 case R_FRV_FUNCDESC_VALUE: 2787 case R_FRV_GETTLSOFF: 2788 case R_FRV_TLSDESC_VALUE: 2789 case R_FRV_GOTTLSDESC12: 2790 case R_FRV_GOTTLSDESCHI: 2791 case R_FRV_GOTTLSDESCLO: 2792 case R_FRV_TLSMOFF12: 2793 case R_FRV_TLSMOFFHI: 2794 case R_FRV_TLSMOFFLO: 2795 case R_FRV_GOTTLSOFF12: 2796 case R_FRV_GOTTLSOFFHI: 2797 case R_FRV_GOTTLSOFFLO: 2798 case R_FRV_TLSOFF: 2799 case R_FRV_TLSDESC_RELAX: 2800 case R_FRV_GETTLSOFF_RELAX: 2801 case R_FRV_TLSOFF_RELAX: 2802 case R_FRV_TLSMOFF: 2803 if (h != NULL) 2804 picrel = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info 2805 (info), input_bfd, h, 2806 orig_addend, INSERT); 2807 else 2808 /* In order to find the entry we created before, we must 2809 use the original addend, not the one that may have been 2810 modified by _bfd_elf_rela_local_sym(). */ 2811 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info 2812 (info), input_bfd, r_symndx, 2813 orig_addend, INSERT); 2814 if (! picrel) 2815 return FALSE; 2816 2817 if (!_frvfdpic_emit_got_relocs_plt_entries (picrel, output_bfd, info, 2818 osec, sym, 2819 rel->r_addend)) 2820 { 2821 info->callbacks->einfo 2822 /* xgettext:c-format */ 2823 (_("%H: relocation to `%s+%v'" 2824 " may have caused the error above\n"), 2825 input_bfd, input_section, rel->r_offset, name, rel->r_addend); 2826 return FALSE; 2827 } 2828 2829 break; 2830 2831 default: 2832 non_fdpic: 2833 picrel = NULL; 2834 if (h 2835 && ! FRVFDPIC_SYM_LOCAL (info, h) 2836 && _bfd_elf_section_offset (output_bfd, info, input_section, 2837 rel->r_offset) != (bfd_vma) -1) 2838 { 2839 info->callbacks->einfo 2840 (_("%H: relocation references symbol" 2841 " not defined in the module\n"), 2842 input_bfd, input_section, rel->r_offset); 2843 return FALSE; 2844 } 2845 break; 2846 } 2847 2848 switch (r_type) 2849 { 2850 case R_FRV_GETTLSOFF: 2851 case R_FRV_TLSDESC_VALUE: 2852 case R_FRV_GOTTLSDESC12: 2853 case R_FRV_GOTTLSDESCHI: 2854 case R_FRV_GOTTLSDESCLO: 2855 case R_FRV_TLSMOFF12: 2856 case R_FRV_TLSMOFFHI: 2857 case R_FRV_TLSMOFFLO: 2858 case R_FRV_GOTTLSOFF12: 2859 case R_FRV_GOTTLSOFFHI: 2860 case R_FRV_GOTTLSOFFLO: 2861 case R_FRV_TLSOFF: 2862 case R_FRV_TLSDESC_RELAX: 2863 case R_FRV_GETTLSOFF_RELAX: 2864 case R_FRV_TLSOFF_RELAX: 2865 case R_FRV_TLSMOFF: 2866 if (sec && (bfd_is_abs_section (sec) || bfd_is_und_section (sec))) 2867 relocation += tls_biased_base (info); 2868 break; 2869 2870 default: 2871 break; 2872 } 2873 2874 /* Try to apply TLS relaxations. */ 2875 if (1) 2876 switch (r_type) 2877 { 2878 2879#define LOCAL_EXEC_P(info, picrel) \ 2880 (bfd_link_executable (info) \ 2881 && (picrel->symndx != -1 || FRVFDPIC_SYM_LOCAL ((info), (picrel)->d.h))) 2882#define INITIAL_EXEC_P(info, picrel) \ 2883 ((bfd_link_executable (info)|| (info)->flags & DF_STATIC_TLS) \ 2884 && (picrel)->tlsoff_entry) 2885 2886#define IN_RANGE_FOR_OFST12_P(value) \ 2887 ((bfd_vma)((value) + 2048) < (bfd_vma)4096) 2888#define IN_RANGE_FOR_SETLOS_P(value) \ 2889 ((bfd_vma)((value) + 32768) < (bfd_vma)65536) 2890#define TLSMOFF_IN_RANGE_FOR_SETLOS_P(value, info) \ 2891 (IN_RANGE_FOR_SETLOS_P ((value) - tls_biased_base (info))) 2892 2893#define RELAX_GETTLSOFF_LOCAL_EXEC_P(info, picrel, value) \ 2894 (LOCAL_EXEC_P ((info), (picrel)) \ 2895 && TLSMOFF_IN_RANGE_FOR_SETLOS_P((value), (info))) 2896#define RELAX_GETTLSOFF_INITIAL_EXEC_P(info, picrel) \ 2897 (INITIAL_EXEC_P ((info), (picrel)) \ 2898 && IN_RANGE_FOR_OFST12_P ((picrel)->tlsoff_entry)) 2899 2900#define RELAX_TLSDESC_LOCAL_EXEC_P(info, picrel, value) \ 2901 (LOCAL_EXEC_P ((info), (picrel))) 2902#define RELAX_TLSDESC_INITIAL_EXEC_P(info, picrel) \ 2903 (INITIAL_EXEC_P ((info), (picrel))) 2904 2905#define RELAX_GOTTLSOFF_LOCAL_EXEC_P(info, picrel, value) \ 2906 (LOCAL_EXEC_P ((info), (picrel)) \ 2907 && TLSMOFF_IN_RANGE_FOR_SETLOS_P((value), (info))) 2908 2909 case R_FRV_GETTLSOFF: 2910 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 2911 2912 /* Is this a call instruction? */ 2913 if ((insn & (unsigned long)0x01fc0000) != 0x003c0000) 2914 { 2915 info->callbacks->einfo 2916 (_("%H: R_FRV_GETTLSOFF not applied to a call instruction\n"), 2917 input_bfd, input_section, rel->r_offset); 2918 return FALSE; 2919 } 2920 2921 if (RELAX_GETTLSOFF_LOCAL_EXEC_P (info, picrel, 2922 relocation + rel->r_addend)) 2923 { 2924 /* Replace the call instruction (except the packing bit) 2925 with setlos #tlsmofflo(symbol+offset), gr9. */ 2926 insn &= (unsigned long)0x80000000; 2927 insn |= (unsigned long)0x12fc0000; 2928 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 2929 2930 r_type = R_FRV_TLSMOFFLO; 2931 howto = elf32_frv_howto_table + r_type; 2932 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 2933 } 2934 2935 else if (RELAX_GETTLSOFF_INITIAL_EXEC_P (info, picrel)) 2936 { 2937 /* Replace the call instruction (except the packing bit) 2938 with ldi @(gr15, #gottlsoff12(symbol+addend)), gr9. */ 2939 insn &= (unsigned long)0x80000000; 2940 insn |= (unsigned long)0x12c8f000; 2941 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 2942 2943 r_type = R_FRV_GOTTLSOFF12; 2944 howto = elf32_frv_howto_table + r_type; 2945 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 2946 } 2947 2948 break; 2949 2950 case R_FRV_GOTTLSDESC12: 2951 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 2952 2953 /* Is this an lddi instruction? */ 2954 if ((insn & (unsigned long)0x01fc0000) != 0x00cc0000) 2955 { 2956 info->callbacks->einfo 2957 (_("%H: R_FRV_GOTTLSDESC12" 2958 " not applied to an lddi instruction\n"), 2959 input_bfd, input_section, rel->r_offset); 2960 return FALSE; 2961 } 2962 2963 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 2964 relocation + rel->r_addend) 2965 && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 2966 info)) 2967 { 2968 /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC 2969 with setlos #tlsmofflo(symbol+offset), gr<C+1>. 2970 Preserve the packing bit. */ 2971 insn = (insn & (unsigned long)0x80000000) 2972 | ((insn + (unsigned long)0x02000000) 2973 & (unsigned long)0x7e000000); 2974 insn |= (unsigned long)0x00fc0000; 2975 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 2976 2977 r_type = R_FRV_TLSMOFFLO; 2978 howto = elf32_frv_howto_table + r_type; 2979 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 2980 } 2981 2982 else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 2983 relocation + rel->r_addend)) 2984 { 2985 /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC 2986 with sethi #tlsmoffhi(symbol+offset), gr<C+1>. 2987 Preserve the packing bit. */ 2988 insn = (insn & (unsigned long)0x80000000) 2989 | ((insn + (unsigned long)0x02000000) 2990 & (unsigned long)0x7e000000); 2991 insn |= (unsigned long)0x00f80000; 2992 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 2993 2994 r_type = R_FRV_TLSMOFFHI; 2995 howto = elf32_frv_howto_table + r_type; 2996 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 2997 } 2998 2999 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3000 { 3001 /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC 3002 with ldi @(grB, #gottlsoff12(symbol+offset), 3003 gr<C+1>. Preserve the packing bit. If gottlsoff12 3004 overflows, we'll error out, but that's sort-of ok, 3005 since we'd started with gottlsdesc12, that's actually 3006 more demanding. Compiling with -fPIE instead of 3007 -fpie would fix it; linking with --relax should fix 3008 it as well. */ 3009 insn = (insn & (unsigned long)0x80cbf000) 3010 | ((insn + (unsigned long)0x02000000) 3011 & (unsigned long)0x7e000000); 3012 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3013 3014 r_type = R_FRV_GOTTLSOFF12; 3015 howto = elf32_frv_howto_table + r_type; 3016 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3017 } 3018 3019 break; 3020 3021 case R_FRV_GOTTLSDESCHI: 3022 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3023 3024 /* Is this a sethi instruction? */ 3025 if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) 3026 { 3027 info->callbacks->einfo 3028 (_("%H: R_FRV_GOTTLSDESCHI" 3029 " not applied to a sethi instruction\n"), 3030 input_bfd, input_section, rel->r_offset); 3031 return FALSE; 3032 } 3033 3034 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3035 relocation + rel->r_addend) 3036 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3037 && IN_RANGE_FOR_SETLOS_P (picrel->tlsoff_entry))) 3038 { 3039 /* Replace sethi with a nop. Preserve the packing bit. */ 3040 insn &= (unsigned long)0x80000000; 3041 insn |= (unsigned long)0x00880000; 3042 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3043 3044 /* Nothing to relocate. */ 3045 continue; 3046 } 3047 3048 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3049 { 3050 /* Simply decay GOTTLSDESC to GOTTLSOFF. */ 3051 r_type = R_FRV_GOTTLSOFFHI; 3052 howto = elf32_frv_howto_table + r_type; 3053 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3054 } 3055 3056 break; 3057 3058 case R_FRV_GOTTLSDESCLO: 3059 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3060 3061 /* Is this a setlo or setlos instruction? */ 3062 if ((insn & (unsigned long)0x01f70000) != 0x00f40000) 3063 { 3064 info->callbacks->einfo 3065 (_("%H: R_FRV_GOTTLSDESCLO" 3066 " not applied to a setlo or setlos instruction\n"), 3067 input_bfd, input_section, rel->r_offset); 3068 return FALSE; 3069 } 3070 3071 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3072 relocation + rel->r_addend) 3073 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3074 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) 3075 { 3076 /* Replace setlo/setlos with a nop. Preserve the 3077 packing bit. */ 3078 insn &= (unsigned long)0x80000000; 3079 insn |= (unsigned long)0x00880000; 3080 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3081 3082 /* Nothing to relocate. */ 3083 continue; 3084 } 3085 3086 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3087 { 3088 /* If the corresponding sethi (if it exists) decayed 3089 to a nop, make sure this becomes (or already is) a 3090 setlos, not setlo. */ 3091 if (IN_RANGE_FOR_SETLOS_P (picrel->tlsoff_entry)) 3092 { 3093 insn |= (unsigned long)0x00080000; 3094 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3095 } 3096 3097 /* Simply decay GOTTLSDESC to GOTTLSOFF. */ 3098 r_type = R_FRV_GOTTLSOFFLO; 3099 howto = elf32_frv_howto_table + r_type; 3100 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3101 } 3102 3103 break; 3104 3105 case R_FRV_TLSDESC_RELAX: 3106 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3107 3108 /* Is this an ldd instruction? */ 3109 if ((insn & (unsigned long)0x01fc0fc0) != 0x00080140) 3110 { 3111 info->callbacks->einfo 3112 (_("%H: R_FRV_TLSDESC_RELAX" 3113 " not applied to an ldd instruction\n"), 3114 input_bfd, input_section, rel->r_offset); 3115 return FALSE; 3116 } 3117 3118 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3119 relocation + rel->r_addend) 3120 && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 3121 info)) 3122 { 3123 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC 3124 with setlos #tlsmofflo(symbol+offset), gr<C+1>. 3125 Preserve the packing bit. */ 3126 insn = (insn & (unsigned long)0x80000000) 3127 | ((insn + (unsigned long)0x02000000) 3128 & (unsigned long)0x7e000000); 3129 insn |= (unsigned long)0x00fc0000; 3130 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3131 3132 r_type = R_FRV_TLSMOFFLO; 3133 howto = elf32_frv_howto_table + r_type; 3134 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3135 } 3136 3137 else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3138 relocation + rel->r_addend)) 3139 { 3140 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC 3141 with sethi #tlsmoffhi(symbol+offset), gr<C+1>. 3142 Preserve the packing bit. */ 3143 insn = (insn & (unsigned long)0x80000000) 3144 | ((insn + (unsigned long)0x02000000) 3145 & (unsigned long)0x7e000000); 3146 insn |= (unsigned long)0x00f80000; 3147 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3148 3149 r_type = R_FRV_TLSMOFFHI; 3150 howto = elf32_frv_howto_table + r_type; 3151 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3152 } 3153 3154 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3155 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry)) 3156 { 3157 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC 3158 with ldi @(grB, #gottlsoff12(symbol+offset), gr<C+1>. 3159 Preserve the packing bit. */ 3160 insn = (insn & (unsigned long)0x8003f000) 3161 | (unsigned long)0x00c80000 3162 | ((insn + (unsigned long)0x02000000) 3163 & (unsigned long)0x7e000000); 3164 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3165 3166 r_type = R_FRV_GOTTLSOFF12; 3167 howto = elf32_frv_howto_table + r_type; 3168 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3169 } 3170 3171 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3172 { 3173 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC 3174 with ld #tlsoff(symbol+offset)@(grB, grA), gr<C+1>. 3175 Preserve the packing bit. */ 3176 insn = (insn & (unsigned long)0x81ffffbf) 3177 | ((insn + (unsigned long)0x02000000) 3178 & (unsigned long)0x7e000000); 3179 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3180 3181 /* #tlsoff(symbol+offset) is just a relaxation 3182 annotation, so there's nothing left to 3183 relocate. */ 3184 continue; 3185 } 3186 3187 break; 3188 3189 case R_FRV_GETTLSOFF_RELAX: 3190 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3191 3192 /* Is this a calll or callil instruction? */ 3193 if ((insn & (unsigned long)0x7ff80fc0) != 0x02300000) 3194 { 3195 info->callbacks->einfo 3196 (_("%H: R_FRV_GETTLSOFF_RELAX" 3197 " not applied to a calll instruction\n"), 3198 input_bfd, input_section, rel->r_offset); 3199 return FALSE; 3200 } 3201 3202 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3203 relocation + rel->r_addend) 3204 && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 3205 info)) 3206 { 3207 /* Replace calll with a nop. Preserve the packing bit. */ 3208 insn &= (unsigned long)0x80000000; 3209 insn |= (unsigned long)0x00880000; 3210 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3211 3212 /* Nothing to relocate. */ 3213 continue; 3214 } 3215 3216 else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3217 relocation + rel->r_addend)) 3218 { 3219 /* Replace calll with setlo #tlsmofflo(symbol+offset), gr9. 3220 Preserve the packing bit. */ 3221 insn &= (unsigned long)0x80000000; 3222 insn |= (unsigned long)0x12f40000; 3223 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3224 3225 r_type = R_FRV_TLSMOFFLO; 3226 howto = elf32_frv_howto_table + r_type; 3227 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3228 } 3229 3230 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3231 { 3232 /* Replace calll with a nop. Preserve the packing bit. */ 3233 insn &= (unsigned long)0x80000000; 3234 insn |= (unsigned long)0x00880000; 3235 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3236 3237 /* Nothing to relocate. */ 3238 continue; 3239 } 3240 3241 break; 3242 3243 case R_FRV_GOTTLSOFF12: 3244 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3245 3246 /* Is this an ldi instruction? */ 3247 if ((insn & (unsigned long)0x01fc0000) != 0x00c80000) 3248 { 3249 info->callbacks->einfo 3250 (_("%H: R_FRV_GOTTLSOFF12" 3251 " not applied to an ldi instruction\n"), 3252 input_bfd, input_section, rel->r_offset); 3253 return FALSE; 3254 } 3255 3256 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, 3257 relocation + rel->r_addend)) 3258 { 3259 /* Replace ldi @(grB, #gottlsoff12(symbol+offset), grC 3260 with setlos #tlsmofflo(symbol+offset), grC. 3261 Preserve the packing bit. */ 3262 insn &= (unsigned long)0xfe000000; 3263 insn |= (unsigned long)0x00fc0000; 3264 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3265 3266 r_type = R_FRV_TLSMOFFLO; 3267 howto = elf32_frv_howto_table + r_type; 3268 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3269 } 3270 3271 break; 3272 3273 case R_FRV_GOTTLSOFFHI: 3274 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3275 3276 /* Is this a sethi instruction? */ 3277 if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) 3278 { 3279 info->callbacks->einfo 3280 (_("%H: R_FRV_GOTTLSOFFHI" 3281 " not applied to a sethi instruction\n"), 3282 input_bfd, input_section, rel->r_offset); 3283 return FALSE; 3284 } 3285 3286 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, 3287 relocation + rel->r_addend) 3288 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3289 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) 3290 { 3291 /* Replace sethi with a nop. Preserve the packing bit. */ 3292 insn &= (unsigned long)0x80000000; 3293 insn |= (unsigned long)0x00880000; 3294 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3295 3296 /* Nothing to relocate. */ 3297 continue; 3298 } 3299 3300 break; 3301 3302 case R_FRV_GOTTLSOFFLO: 3303 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3304 3305 /* Is this a setlo or setlos instruction? */ 3306 if ((insn & (unsigned long)0x01f70000) != 0x00f40000) 3307 { 3308 info->callbacks->einfo 3309 (_("%H: R_FRV_GOTTLSOFFLO" 3310 " not applied to a setlo or setlos instruction\n"), 3311 input_bfd, input_section, rel->r_offset); 3312 return FALSE; 3313 } 3314 3315 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, 3316 relocation + rel->r_addend) 3317 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3318 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) 3319 { 3320 /* Replace setlo/setlos with a nop. Preserve the 3321 packing bit. */ 3322 insn &= (unsigned long)0x80000000; 3323 insn |= (unsigned long)0x00880000; 3324 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3325 3326 /* Nothing to relocate. */ 3327 continue; 3328 } 3329 3330 break; 3331 3332 case R_FRV_TLSOFF_RELAX: 3333 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3334 3335 /* Is this an ld instruction? */ 3336 if ((insn & (unsigned long)0x01fc0fc0) != 0x00080100) 3337 { 3338 info->callbacks->einfo 3339 (_("%H: R_FRV_TLSOFF_RELAX" 3340 " not applied to an ld instruction\n"), 3341 input_bfd, input_section, rel->r_offset); 3342 return FALSE; 3343 } 3344 3345 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, 3346 relocation + rel->r_addend)) 3347 { 3348 /* Replace ld #gottlsoff(symbol+offset)@(grB, grA), grC 3349 with setlos #tlsmofflo(symbol+offset), grC. 3350 Preserve the packing bit. */ 3351 insn &= (unsigned long)0xfe000000; 3352 insn |= (unsigned long)0x00fc0000; 3353 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3354 3355 r_type = R_FRV_TLSMOFFLO; 3356 howto = elf32_frv_howto_table + r_type; 3357 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3358 } 3359 3360 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3361 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry)) 3362 { 3363 /* Replace ld #tlsoff(symbol+offset)@(grB, grA), grC 3364 with ldi @(grB, #gottlsoff12(symbol+offset), grC. 3365 Preserve the packing bit. */ 3366 insn = (insn & (unsigned long)0xfe03f000) 3367 | (unsigned long)0x00c80000; 3368 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3369 3370 r_type = R_FRV_GOTTLSOFF12; 3371 howto = elf32_frv_howto_table + r_type; 3372 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3373 } 3374 3375 break; 3376 3377 case R_FRV_TLSMOFFHI: 3378 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3379 3380 /* Is this a sethi instruction? */ 3381 if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) 3382 { 3383 info->callbacks->einfo 3384 (_("%H: R_FRV_TLSMOFFHI" 3385 " not applied to a sethi instruction\n"), 3386 input_bfd, input_section, rel->r_offset); 3387 return FALSE; 3388 } 3389 3390 if (TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 3391 info)) 3392 { 3393 /* Replace sethi with a nop. Preserve the packing bit. */ 3394 insn &= (unsigned long)0x80000000; 3395 insn |= (unsigned long)0x00880000; 3396 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3397 3398 /* Nothing to relocate. */ 3399 continue; 3400 } 3401 3402 break; 3403 3404 case R_FRV_TLSMOFFLO: 3405 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3406 3407 /* Is this a setlo or setlos instruction? */ 3408 if ((insn & (unsigned long)0x01f70000) != 0x00f40000) 3409 { 3410 info->callbacks->einfo 3411 (_("R_FRV_TLSMOFFLO" 3412 " not applied to a setlo or setlos instruction\n"), 3413 input_bfd, input_section, rel->r_offset); 3414 return FALSE; 3415 } 3416 3417 if (TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 3418 info)) 3419 /* If the corresponding sethi (if it exists) decayed 3420 to a nop, make sure this becomes (or already is) a 3421 setlos, not setlo. */ 3422 { 3423 insn |= (unsigned long)0x00080000; 3424 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3425 } 3426 3427 break; 3428 3429 /* 3430 There's nothing to relax in these: 3431 R_FRV_TLSDESC_VALUE 3432 R_FRV_TLSOFF 3433 R_FRV_TLSMOFF12 3434 R_FRV_TLSMOFFHI 3435 R_FRV_TLSMOFFLO 3436 R_FRV_TLSMOFF 3437 */ 3438 3439 default: 3440 break; 3441 } 3442 3443 switch (r_type) 3444 { 3445 case R_FRV_LABEL24: 3446 check_segment[0] = isec_segment; 3447 if (! IS_FDPIC (output_bfd)) 3448 check_segment[1] = isec_segment; 3449 else if (picrel->plt) 3450 { 3451 relocation = frvfdpic_plt_section (info)->output_section->vma 3452 + frvfdpic_plt_section (info)->output_offset 3453 + picrel->plt_entry; 3454 check_segment[1] = plt_segment; 3455 } 3456 /* We don't want to warn on calls to undefined weak symbols, 3457 as calls to them must be protected by non-NULL tests 3458 anyway, and unprotected calls would invoke undefined 3459 behavior. */ 3460 else if (picrel->symndx == -1 3461 && picrel->d.h->root.type == bfd_link_hash_undefweak) 3462 check_segment[1] = check_segment[0]; 3463 else 3464 check_segment[1] = sec 3465 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3466 : (unsigned)-1; 3467 break; 3468 3469 case R_FRV_GOT12: 3470 case R_FRV_GOTHI: 3471 case R_FRV_GOTLO: 3472 relocation = picrel->got_entry; 3473 check_segment[0] = check_segment[1] = got_segment; 3474 break; 3475 3476 case R_FRV_FUNCDESC_GOT12: 3477 case R_FRV_FUNCDESC_GOTHI: 3478 case R_FRV_FUNCDESC_GOTLO: 3479 relocation = picrel->fdgot_entry; 3480 check_segment[0] = check_segment[1] = got_segment; 3481 break; 3482 3483 case R_FRV_GOTOFFHI: 3484 case R_FRV_GOTOFF12: 3485 case R_FRV_GOTOFFLO: 3486 relocation -= frvfdpic_got_section (info)->output_section->vma 3487 + frvfdpic_got_section (info)->output_offset 3488 + frvfdpic_got_initial_offset (info); 3489 check_segment[0] = got_segment; 3490 check_segment[1] = sec 3491 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3492 : (unsigned)-1; 3493 break; 3494 3495 case R_FRV_FUNCDESC_GOTOFF12: 3496 case R_FRV_FUNCDESC_GOTOFFHI: 3497 case R_FRV_FUNCDESC_GOTOFFLO: 3498 relocation = picrel->fd_entry; 3499 check_segment[0] = check_segment[1] = got_segment; 3500 break; 3501 3502 case R_FRV_FUNCDESC: 3503 { 3504 int dynindx; 3505 bfd_vma addend = rel->r_addend; 3506 3507 if (! (h && h->root.type == bfd_link_hash_undefweak 3508 && FRVFDPIC_SYM_LOCAL (info, h))) 3509 { 3510 /* If the symbol is dynamic and there may be dynamic 3511 symbol resolution because we are or are linked with a 3512 shared library, emit a FUNCDESC relocation such that 3513 the dynamic linker will allocate the function 3514 descriptor. If the symbol needs a non-local function 3515 descriptor but binds locally (e.g., its visibility is 3516 protected, emit a dynamic relocation decayed to 3517 section+offset. */ 3518 if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h) 3519 && FRVFDPIC_SYM_LOCAL (info, h) 3520 && !bfd_link_pde (info)) 3521 { 3522 dynindx = elf_section_data (h->root.u.def.section 3523 ->output_section)->dynindx; 3524 addend += h->root.u.def.section->output_offset 3525 + h->root.u.def.value; 3526 } 3527 else if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h)) 3528 { 3529 if (addend) 3530 { 3531 info->callbacks->einfo 3532 (_("%H: R_FRV_FUNCDESC references dynamic symbol" 3533 " with nonzero addend\n"), 3534 input_bfd, input_section, rel->r_offset); 3535 return FALSE; 3536 } 3537 dynindx = h->dynindx; 3538 } 3539 else 3540 { 3541 /* Otherwise, we know we have a private function 3542 descriptor, so reference it directly. */ 3543 BFD_ASSERT (picrel->privfd); 3544 r_type = R_FRV_32; 3545 dynindx = elf_section_data (frvfdpic_got_section (info) 3546 ->output_section)->dynindx; 3547 addend = frvfdpic_got_section (info)->output_offset 3548 + frvfdpic_got_initial_offset (info) 3549 + picrel->fd_entry; 3550 } 3551 3552 /* If there is room for dynamic symbol resolution, emit 3553 the dynamic relocation. However, if we're linking an 3554 executable at a fixed location, we won't have emitted a 3555 dynamic symbol entry for the got section, so idx will 3556 be zero, which means we can and should compute the 3557 address of the private descriptor ourselves. */ 3558 if (bfd_link_pde (info) 3559 && (!h || FRVFDPIC_FUNCDESC_LOCAL (info, h))) 3560 { 3561 addend += frvfdpic_got_section (info)->output_section->vma; 3562 if ((bfd_get_section_flags (output_bfd, 3563 input_section->output_section) 3564 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 3565 { 3566 bfd_vma offset; 3567 3568 if (_frvfdpic_osec_readonly_p (output_bfd, 3569 input_section 3570 ->output_section)) 3571 { 3572 info->callbacks->einfo 3573 (_("%H: cannot emit fixups" 3574 " in read-only section\n"), 3575 input_bfd, input_section, rel->r_offset); 3576 return FALSE; 3577 } 3578 3579 offset = _bfd_elf_section_offset 3580 (output_bfd, info, 3581 input_section, rel->r_offset); 3582 3583 if (offset != (bfd_vma)-1) 3584 _frvfdpic_add_rofixup (output_bfd, 3585 frvfdpic_gotfixup_section 3586 (info), 3587 offset + input_section 3588 ->output_section->vma 3589 + input_section->output_offset, 3590 picrel); 3591 } 3592 } 3593 else if ((bfd_get_section_flags (output_bfd, 3594 input_section->output_section) 3595 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 3596 { 3597 bfd_vma offset; 3598 3599 if (_frvfdpic_osec_readonly_p (output_bfd, 3600 input_section 3601 ->output_section)) 3602 { 3603 info->callbacks->einfo 3604 (_("%H: cannot emit dynamic relocations" 3605 " in read-only section\n"), 3606 input_bfd, input_section, rel->r_offset); 3607 return FALSE; 3608 } 3609 3610 offset = _bfd_elf_section_offset 3611 (output_bfd, info, 3612 input_section, rel->r_offset); 3613 3614 if (offset != (bfd_vma)-1) 3615 _frvfdpic_add_dyn_reloc (output_bfd, 3616 frvfdpic_gotrel_section (info), 3617 offset + input_section 3618 ->output_section->vma 3619 + input_section->output_offset, 3620 r_type, dynindx, addend, picrel); 3621 } 3622 else 3623 addend += frvfdpic_got_section (info)->output_section->vma; 3624 } 3625 3626 /* We want the addend in-place because dynamic 3627 relocations are REL. Setting relocation to it should 3628 arrange for it to be installed. */ 3629 relocation = addend - rel->r_addend; 3630 } 3631 check_segment[0] = check_segment[1] = got_segment; 3632 break; 3633 3634 case R_FRV_32: 3635 if (! IS_FDPIC (output_bfd)) 3636 { 3637 check_segment[0] = check_segment[1] = -1; 3638 break; 3639 } 3640 /* Fall through. */ 3641 case R_FRV_FUNCDESC_VALUE: 3642 { 3643 int dynindx; 3644 bfd_vma addend = rel->r_addend; 3645 3646 /* If the symbol is dynamic but binds locally, use 3647 section+offset. */ 3648 if (h && ! FRVFDPIC_SYM_LOCAL (info, h)) 3649 { 3650 if (addend && r_type == R_FRV_FUNCDESC_VALUE) 3651 { 3652 info->callbacks->einfo 3653 (_("%H: R_FRV_FUNCDESC_VALUE" 3654 " references dynamic symbol with nonzero addend\n"), 3655 input_bfd, input_section, rel->r_offset); 3656 return FALSE; 3657 } 3658 dynindx = h->dynindx; 3659 } 3660 else 3661 { 3662 if (h) 3663 addend += h->root.u.def.value; 3664 else 3665 addend += sym->st_value; 3666 if (osec) 3667 addend += osec->output_offset; 3668 if (osec && osec->output_section 3669 && ! bfd_is_abs_section (osec->output_section) 3670 && ! bfd_is_und_section (osec->output_section)) 3671 dynindx = elf_section_data (osec->output_section)->dynindx; 3672 else 3673 dynindx = 0; 3674 } 3675 3676 /* If we're linking an executable at a fixed address, we 3677 can omit the dynamic relocation as long as the symbol 3678 is defined in the current link unit (which is implied 3679 by its output section not being NULL). */ 3680 if (bfd_link_pde (info) 3681 && (!h || FRVFDPIC_SYM_LOCAL (info, h))) 3682 { 3683 if (osec) 3684 addend += osec->output_section->vma; 3685 if (IS_FDPIC (input_bfd) 3686 && (bfd_get_section_flags (output_bfd, 3687 input_section->output_section) 3688 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 3689 { 3690 if (_frvfdpic_osec_readonly_p (output_bfd, 3691 input_section 3692 ->output_section)) 3693 { 3694 info->callbacks->einfo 3695 (_("%H: cannot emit fixups in read-only section\n"), 3696 input_bfd, input_section, rel->r_offset); 3697 return FALSE; 3698 } 3699 if (!h || h->root.type != bfd_link_hash_undefweak) 3700 { 3701 bfd_vma offset = _bfd_elf_section_offset 3702 (output_bfd, info, 3703 input_section, rel->r_offset); 3704 3705 if (offset != (bfd_vma)-1) 3706 { 3707 _frvfdpic_add_rofixup (output_bfd, 3708 frvfdpic_gotfixup_section 3709 (info), 3710 offset + input_section 3711 ->output_section->vma 3712 + input_section->output_offset, 3713 picrel); 3714 if (r_type == R_FRV_FUNCDESC_VALUE) 3715 _frvfdpic_add_rofixup 3716 (output_bfd, 3717 frvfdpic_gotfixup_section (info), 3718 offset 3719 + input_section->output_section->vma 3720 + input_section->output_offset + 4, picrel); 3721 } 3722 } 3723 } 3724 } 3725 else 3726 { 3727 if ((bfd_get_section_flags (output_bfd, 3728 input_section->output_section) 3729 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 3730 { 3731 bfd_vma offset; 3732 3733 if (_frvfdpic_osec_readonly_p (output_bfd, 3734 input_section 3735 ->output_section)) 3736 { 3737 info->callbacks->einfo 3738 (_("%H: cannot emit dynamic relocations" 3739 " in read-only section\n"), 3740 input_bfd, input_section, rel->r_offset); 3741 return FALSE; 3742 } 3743 3744 offset = _bfd_elf_section_offset 3745 (output_bfd, info, 3746 input_section, rel->r_offset); 3747 3748 if (offset != (bfd_vma)-1) 3749 _frvfdpic_add_dyn_reloc (output_bfd, 3750 frvfdpic_gotrel_section (info), 3751 offset + input_section 3752 ->output_section->vma 3753 + input_section->output_offset, 3754 r_type, dynindx, addend, picrel); 3755 } 3756 else if (osec) 3757 addend += osec->output_section->vma; 3758 /* We want the addend in-place because dynamic 3759 relocations are REL. Setting relocation to it 3760 should arrange for it to be installed. */ 3761 relocation = addend - rel->r_addend; 3762 } 3763 3764 if (r_type == R_FRV_FUNCDESC_VALUE) 3765 { 3766 /* If we've omitted the dynamic relocation, just emit 3767 the fixed addresses of the symbol and of the local 3768 GOT base offset. */ 3769 if (bfd_link_pde (info) 3770 && (!h || FRVFDPIC_SYM_LOCAL (info, h))) 3771 bfd_put_32 (output_bfd, 3772 frvfdpic_got_section (info)->output_section->vma 3773 + frvfdpic_got_section (info)->output_offset 3774 + frvfdpic_got_initial_offset (info), 3775 contents + rel->r_offset + 4); 3776 else 3777 /* A function descriptor used for lazy or local 3778 resolving is initialized such that its high word 3779 contains the output section index in which the 3780 PLT entries are located, and the low word 3781 contains the offset of the lazy PLT entry entry 3782 point into that section. */ 3783 bfd_put_32 (output_bfd, 3784 h && ! FRVFDPIC_SYM_LOCAL (info, h) 3785 ? 0 3786 : _frvfdpic_osec_to_segment (output_bfd, 3787 sec 3788 ->output_section), 3789 contents + rel->r_offset + 4); 3790 } 3791 } 3792 check_segment[0] = check_segment[1] = got_segment; 3793 break; 3794 3795 case R_FRV_GPREL12: 3796 case R_FRV_GPRELU12: 3797 case R_FRV_GPREL32: 3798 case R_FRV_GPRELHI: 3799 case R_FRV_GPRELLO: 3800 check_segment[0] = gprel_segment; 3801 check_segment[1] = sec 3802 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3803 : (unsigned)-1; 3804 break; 3805 3806 case R_FRV_GETTLSOFF: 3807 relocation = frvfdpic_plt_section (info)->output_section->vma 3808 + frvfdpic_plt_section (info)->output_offset 3809 + picrel->tlsplt_entry; 3810 BFD_ASSERT (picrel->tlsplt_entry != (bfd_vma)-1 3811 && picrel->tlsdesc_entry); 3812 check_segment[0] = isec_segment; 3813 check_segment[1] = plt_segment; 3814 break; 3815 3816 case R_FRV_GOTTLSDESC12: 3817 case R_FRV_GOTTLSDESCHI: 3818 case R_FRV_GOTTLSDESCLO: 3819 BFD_ASSERT (picrel->tlsdesc_entry); 3820 relocation = picrel->tlsdesc_entry; 3821 check_segment[0] = tls_segment; 3822 check_segment[1] = sec 3823 && ! bfd_is_abs_section (sec) 3824 && ! bfd_is_und_section (sec) 3825 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3826 : tls_segment; 3827 break; 3828 3829 case R_FRV_TLSMOFF12: 3830 case R_FRV_TLSMOFFHI: 3831 case R_FRV_TLSMOFFLO: 3832 case R_FRV_TLSMOFF: 3833 check_segment[0] = tls_segment; 3834 if (! sec) 3835 check_segment[1] = -1; 3836 else if (bfd_is_abs_section (sec) 3837 || bfd_is_und_section (sec)) 3838 { 3839 relocation = 0; 3840 check_segment[1] = tls_segment; 3841 } 3842 else if (sec->output_section) 3843 { 3844 relocation -= tls_biased_base (info); 3845 check_segment[1] = 3846 _frvfdpic_osec_to_segment (output_bfd, sec->output_section); 3847 } 3848 else 3849 check_segment[1] = -1; 3850 break; 3851 3852 case R_FRV_GOTTLSOFF12: 3853 case R_FRV_GOTTLSOFFHI: 3854 case R_FRV_GOTTLSOFFLO: 3855 BFD_ASSERT (picrel->tlsoff_entry); 3856 relocation = picrel->tlsoff_entry; 3857 check_segment[0] = tls_segment; 3858 check_segment[1] = sec 3859 && ! bfd_is_abs_section (sec) 3860 && ! bfd_is_und_section (sec) 3861 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3862 : tls_segment; 3863 break; 3864 3865 case R_FRV_TLSDESC_VALUE: 3866 case R_FRV_TLSOFF: 3867 /* These shouldn't be present in input object files. */ 3868 check_segment[0] = check_segment[1] = isec_segment; 3869 break; 3870 3871 case R_FRV_TLSDESC_RELAX: 3872 case R_FRV_GETTLSOFF_RELAX: 3873 case R_FRV_TLSOFF_RELAX: 3874 /* These are just annotations for relaxation, nothing to do 3875 here. */ 3876 continue; 3877 3878 default: 3879 check_segment[0] = isec_segment; 3880 check_segment[1] = sec 3881 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3882 : (unsigned)-1; 3883 break; 3884 } 3885 3886 if (check_segment[0] != check_segment[1] && IS_FDPIC (output_bfd)) 3887 { 3888 /* If you take this out, remove the #error from fdpic-static-6.d 3889 in the ld testsuite. */ 3890 /* This helps catch problems in GCC while we can't do more 3891 than static linking. The idea is to test whether the 3892 input file basename is crt0.o only once. */ 3893 if (silence_segment_error == 1) 3894 silence_segment_error = 3895 (strlen (input_bfd->filename) == 6 3896 && filename_cmp (input_bfd->filename, "crt0.o") == 0) 3897 || (strlen (input_bfd->filename) > 6 3898 && filename_cmp (input_bfd->filename 3899 + strlen (input_bfd->filename) - 7, 3900 "/crt0.o") == 0) 3901 ? -1 : 0; 3902 if (!silence_segment_error 3903 /* We don't want duplicate errors for undefined 3904 symbols. */ 3905 && !(picrel && picrel->symndx == -1 3906 && picrel->d.h->root.type == bfd_link_hash_undefined)) 3907 { 3908 info->callbacks->einfo 3909 /* xgettext:c-format */ 3910 (_("%H: reloc against `%s' references a different segment\n"), 3911 input_bfd, input_section, rel->r_offset, name); 3912 } 3913 if (!silence_segment_error && bfd_link_pic (info)) 3914 return FALSE; 3915 elf_elfheader (output_bfd)->e_flags |= EF_FRV_PIC; 3916 } 3917 3918 switch (r_type) 3919 { 3920 case R_FRV_GOTOFFHI: 3921 case R_FRV_TLSMOFFHI: 3922 /* We need the addend to be applied before we shift the 3923 value right. */ 3924 relocation += rel->r_addend; 3925 /* Fall through. */ 3926 case R_FRV_GOTHI: 3927 case R_FRV_FUNCDESC_GOTHI: 3928 case R_FRV_FUNCDESC_GOTOFFHI: 3929 case R_FRV_GOTTLSOFFHI: 3930 case R_FRV_GOTTLSDESCHI: 3931 relocation >>= 16; 3932 /* Fall through. */ 3933 3934 case R_FRV_GOTLO: 3935 case R_FRV_FUNCDESC_GOTLO: 3936 case R_FRV_GOTOFFLO: 3937 case R_FRV_FUNCDESC_GOTOFFLO: 3938 case R_FRV_GOTTLSOFFLO: 3939 case R_FRV_GOTTLSDESCLO: 3940 case R_FRV_TLSMOFFLO: 3941 relocation &= 0xffff; 3942 break; 3943 3944 default: 3945 break; 3946 } 3947 3948 switch (r_type) 3949 { 3950 case R_FRV_LABEL24: 3951 if (! IS_FDPIC (output_bfd) || ! picrel->plt) 3952 break; 3953 /* Fall through. */ 3954 3955 /* When referencing a GOT entry, a function descriptor or a 3956 PLT, we don't want the addend to apply to the reference, 3957 but rather to the referenced symbol. The actual entry 3958 will have already been created taking the addend into 3959 account, so cancel it out here. */ 3960 case R_FRV_GOT12: 3961 case R_FRV_GOTHI: 3962 case R_FRV_GOTLO: 3963 case R_FRV_FUNCDESC_GOT12: 3964 case R_FRV_FUNCDESC_GOTHI: 3965 case R_FRV_FUNCDESC_GOTLO: 3966 case R_FRV_FUNCDESC_GOTOFF12: 3967 case R_FRV_FUNCDESC_GOTOFFHI: 3968 case R_FRV_FUNCDESC_GOTOFFLO: 3969 case R_FRV_GETTLSOFF: 3970 case R_FRV_GOTTLSDESC12: 3971 case R_FRV_GOTTLSDESCHI: 3972 case R_FRV_GOTTLSDESCLO: 3973 case R_FRV_GOTTLSOFF12: 3974 case R_FRV_GOTTLSOFFHI: 3975 case R_FRV_GOTTLSOFFLO: 3976 /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF12 3977 here, since we do want to apply the addend to the others. 3978 Note that we've applied the addend to GOTOFFHI before we 3979 shifted it right. */ 3980 case R_FRV_GOTOFFHI: 3981 case R_FRV_TLSMOFFHI: 3982 relocation -= rel->r_addend; 3983 break; 3984 3985 default: 3986 break; 3987 } 3988 3989 if (r_type == R_FRV_HI16) 3990 r = elf32_frv_relocate_hi16 (input_bfd, rel, contents, relocation); 3991 3992 else if (r_type == R_FRV_LO16) 3993 r = elf32_frv_relocate_lo16 (input_bfd, rel, contents, relocation); 3994 3995 else if (r_type == R_FRV_LABEL24 || r_type == R_FRV_GETTLSOFF) 3996 r = elf32_frv_relocate_label24 (input_bfd, input_section, rel, 3997 contents, relocation); 3998 3999 else if (r_type == R_FRV_GPREL12) 4000 r = elf32_frv_relocate_gprel12 (info, input_bfd, input_section, rel, 4001 contents, relocation); 4002 4003 else if (r_type == R_FRV_GPRELU12) 4004 r = elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, rel, 4005 contents, relocation); 4006 4007 else if (r_type == R_FRV_GPRELLO) 4008 r = elf32_frv_relocate_gprello (info, input_bfd, input_section, rel, 4009 contents, relocation); 4010 4011 else if (r_type == R_FRV_GPRELHI) 4012 r = elf32_frv_relocate_gprelhi (info, input_bfd, input_section, rel, 4013 contents, relocation); 4014 4015 else if (r_type == R_FRV_TLSOFF 4016 || r_type == R_FRV_TLSDESC_VALUE) 4017 r = bfd_reloc_notsupported; 4018 4019 else 4020 r = frv_final_link_relocate (howto, input_bfd, input_section, contents, 4021 rel, relocation); 4022 4023 if (r != bfd_reloc_ok) 4024 { 4025 const char * msg = (const char *) NULL; 4026 4027 switch (r) 4028 { 4029 case bfd_reloc_overflow: 4030 (*info->callbacks->reloc_overflow) 4031 (info, (h ? &h->root : NULL), name, howto->name, 4032 (bfd_vma) 0, input_bfd, input_section, rel->r_offset); 4033 break; 4034 4035 case bfd_reloc_undefined: 4036 (*info->callbacks->undefined_symbol) 4037 (info, name, input_bfd, input_section, rel->r_offset, TRUE); 4038 break; 4039 4040 case bfd_reloc_outofrange: 4041 msg = _("internal error: out of range error"); 4042 break; 4043 4044 case bfd_reloc_notsupported: 4045 msg = _("internal error: unsupported relocation error"); 4046 break; 4047 4048 case bfd_reloc_dangerous: 4049 msg = _("internal error: dangerous relocation"); 4050 break; 4051 4052 default: 4053 msg = _("internal error: unknown error"); 4054 break; 4055 } 4056 4057 if (msg) 4058 { 4059 info->callbacks->einfo 4060 /* xgettext:c-format */ 4061 (_("%H: reloc against `%s': %s\n"), 4062 input_bfd, input_section, rel->r_offset, name, msg); 4063 return FALSE; 4064 } 4065 } 4066 } 4067 4068 return TRUE; 4069} 4070 4071/* Return the section that should be marked against GC for a given 4072 relocation. */ 4073 4074static asection * 4075elf32_frv_gc_mark_hook (asection *sec, 4076 struct bfd_link_info *info, 4077 Elf_Internal_Rela *rel, 4078 struct elf_link_hash_entry *h, 4079 Elf_Internal_Sym *sym) 4080{ 4081 if (h != NULL) 4082 switch (ELF32_R_TYPE (rel->r_info)) 4083 { 4084 case R_FRV_GNU_VTINHERIT: 4085 case R_FRV_GNU_VTENTRY: 4086 return NULL; 4087 } 4088 4089 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 4090} 4091 4092/* Hook called by the linker routine which adds symbols from an object 4093 file. We use it to put .comm items in .scomm, and not .comm. */ 4094 4095static bfd_boolean 4096elf32_frv_add_symbol_hook (bfd *abfd, 4097 struct bfd_link_info *info, 4098 Elf_Internal_Sym *sym, 4099 const char **namep ATTRIBUTE_UNUSED, 4100 flagword *flagsp ATTRIBUTE_UNUSED, 4101 asection **secp, 4102 bfd_vma *valp) 4103{ 4104 if (sym->st_shndx == SHN_COMMON 4105 && !bfd_link_relocatable (info) 4106 && (int)sym->st_size <= (int)bfd_get_gp_size (abfd)) 4107 { 4108 /* Common symbols less than or equal to -G nn bytes are 4109 automatically put into .sbss. */ 4110 4111 asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); 4112 4113 if (scomm == NULL) 4114 { 4115 scomm = bfd_make_section_with_flags (abfd, ".scommon", 4116 (SEC_ALLOC 4117 | SEC_IS_COMMON 4118 | SEC_LINKER_CREATED)); 4119 if (scomm == NULL) 4120 return FALSE; 4121 } 4122 4123 *secp = scomm; 4124 *valp = sym->st_size; 4125 } 4126 4127 return TRUE; 4128} 4129 4130/* We need dynamic symbols for every section, since segments can 4131 relocate independently. */ 4132static bfd_boolean 4133_frvfdpic_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED, 4134 struct bfd_link_info *info 4135 ATTRIBUTE_UNUSED, 4136 asection *p ATTRIBUTE_UNUSED) 4137{ 4138 switch (elf_section_data (p)->this_hdr.sh_type) 4139 { 4140 case SHT_PROGBITS: 4141 case SHT_NOBITS: 4142 /* If sh_type is yet undecided, assume it could be 4143 SHT_PROGBITS/SHT_NOBITS. */ 4144 case SHT_NULL: 4145 return FALSE; 4146 4147 /* There shouldn't be section relative relocations 4148 against any other section. */ 4149 default: 4150 return TRUE; 4151 } 4152} 4153 4154/* Create a .got section, as well as its additional info field. This 4155 is almost entirely copied from 4156 elflink.c:_bfd_elf_create_got_section(). */ 4157 4158static bfd_boolean 4159_frv_create_got_section (bfd *abfd, struct bfd_link_info *info) 4160{ 4161 flagword flags, pltflags; 4162 asection *s; 4163 struct elf_link_hash_entry *h; 4164 struct bfd_link_hash_entry *bh; 4165 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 4166 int ptralign; 4167 int offset; 4168 4169 /* This function may be called more than once. */ 4170 s = elf_hash_table (info)->sgot; 4171 if (s != NULL) 4172 return TRUE; 4173 4174 /* Machine specific: although pointers are 32-bits wide, we want the 4175 GOT to be aligned to a 64-bit boundary, such that function 4176 descriptors in it can be accessed with 64-bit loads and 4177 stores. */ 4178 ptralign = 3; 4179 4180 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 4181 | SEC_LINKER_CREATED); 4182 pltflags = flags; 4183 4184 s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); 4185 elf_hash_table (info)->sgot = s; 4186 if (s == NULL 4187 || !bfd_set_section_alignment (abfd, s, ptralign)) 4188 return FALSE; 4189 4190 if (bed->want_got_sym) 4191 { 4192 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got 4193 (or .got.plt) section. We don't do this in the linker script 4194 because we don't want to define the symbol if we are not creating 4195 a global offset table. */ 4196 h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_"); 4197 elf_hash_table (info)->hgot = h; 4198 if (h == NULL) 4199 return FALSE; 4200 4201 /* Machine-specific: we want the symbol for executables as 4202 well. */ 4203 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 4204 return FALSE; 4205 } 4206 4207 /* The first bit of the global offset table is the header. */ 4208 s->size += bed->got_header_size; 4209 4210 /* This is the machine-specific part. Create and initialize section 4211 data for the got. */ 4212 if (IS_FDPIC (abfd)) 4213 { 4214 frvfdpic_relocs_info (info) = htab_try_create (1, 4215 frvfdpic_relocs_info_hash, 4216 frvfdpic_relocs_info_eq, 4217 (htab_del) NULL); 4218 if (! frvfdpic_relocs_info (info)) 4219 return FALSE; 4220 4221 s = bfd_make_section_anyway_with_flags (abfd, ".rel.got", 4222 (flags | SEC_READONLY)); 4223 elf_hash_table (info)->srelgot = s; 4224 if (s == NULL 4225 || ! bfd_set_section_alignment (abfd, s, 2)) 4226 return FALSE; 4227 4228 /* Machine-specific. */ 4229 s = bfd_make_section_anyway_with_flags (abfd, ".rofixup", 4230 (flags | SEC_READONLY)); 4231 if (s == NULL 4232 || ! bfd_set_section_alignment (abfd, s, 2)) 4233 return FALSE; 4234 4235 frvfdpic_gotfixup_section (info) = s; 4236 offset = -2048; 4237 flags = BSF_GLOBAL; 4238 } 4239 else 4240 { 4241 offset = 2048; 4242 flags = BSF_GLOBAL | BSF_WEAK; 4243 } 4244 4245 /* Define _gp in .rofixup, for FDPIC, or .got otherwise. If it 4246 turns out that we're linking with a different linker script, the 4247 linker script will override it. */ 4248 bh = NULL; 4249 if (!(_bfd_generic_link_add_one_symbol 4250 (info, abfd, "_gp", flags, s, offset, (const char *) NULL, FALSE, 4251 bed->collect, &bh))) 4252 return FALSE; 4253 h = (struct elf_link_hash_entry *) bh; 4254 h->def_regular = 1; 4255 h->type = STT_OBJECT; 4256 /* h->other = STV_HIDDEN; */ /* Should we? */ 4257 4258 /* Machine-specific: we want the symbol for executables as well. */ 4259 if (IS_FDPIC (abfd) && ! bfd_elf_link_record_dynamic_symbol (info, h)) 4260 return FALSE; 4261 4262 if (!IS_FDPIC (abfd)) 4263 return TRUE; 4264 4265 /* FDPIC supports Thread Local Storage, and this may require a 4266 procedure linkage table for TLS PLT entries. */ 4267 4268 /* This is mostly copied from 4269 elflink.c:_bfd_elf_create_dynamic_sections(). */ 4270 4271 flags = pltflags; 4272 pltflags |= SEC_CODE; 4273 if (bed->plt_not_loaded) 4274 pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS); 4275 if (bed->plt_readonly) 4276 pltflags |= SEC_READONLY; 4277 4278 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags); 4279 if (s == NULL 4280 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) 4281 return FALSE; 4282 /* FRV-specific: remember it. */ 4283 frvfdpic_plt_section (info) = s; 4284 4285 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the 4286 .plt section. */ 4287 if (bed->want_plt_sym) 4288 { 4289 h = _bfd_elf_define_linkage_sym (abfd, info, s, 4290 "_PROCEDURE_LINKAGE_TABLE_"); 4291 elf_hash_table (info)->hplt = h; 4292 if (h == NULL) 4293 return FALSE; 4294 } 4295 4296 /* FRV-specific: we want rel relocations for the plt. */ 4297 s = bfd_make_section_anyway_with_flags (abfd, ".rel.plt", 4298 flags | SEC_READONLY); 4299 if (s == NULL 4300 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 4301 return FALSE; 4302 /* FRV-specific: remember it. */ 4303 frvfdpic_pltrel_section (info) = s; 4304 4305 return TRUE; 4306} 4307 4308/* Make sure the got and plt sections exist, and that our pointers in 4309 the link hash table point to them. */ 4310 4311static bfd_boolean 4312elf32_frvfdpic_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 4313{ 4314 /* This is mostly copied from 4315 elflink.c:_bfd_elf_create_dynamic_sections(). */ 4316 flagword flags; 4317 asection *s; 4318 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 4319 4320 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 4321 | SEC_LINKER_CREATED); 4322 4323 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and 4324 .rel[a].bss sections. */ 4325 4326 /* FRV-specific: we want to create the GOT and the PLT in the FRV 4327 way. */ 4328 if (! _frv_create_got_section (abfd, info)) 4329 return FALSE; 4330 4331 /* FRV-specific: make sure we created everything we wanted. */ 4332 BFD_ASSERT (frvfdpic_got_section (info) && frvfdpic_gotrel_section (info) 4333 && frvfdpic_gotfixup_section (info) 4334 && frvfdpic_plt_section (info) 4335 && frvfdpic_pltrel_section (info)); 4336 4337 if (bed->want_dynbss) 4338 { 4339 /* The .dynbss section is a place to put symbols which are defined 4340 by dynamic objects, are referenced by regular objects, and are 4341 not functions. We must allocate space for them in the process 4342 image and use a R_*_COPY reloc to tell the dynamic linker to 4343 initialize them at run time. The linker script puts the .dynbss 4344 section into the .bss section of the final image. */ 4345 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss", 4346 SEC_ALLOC | SEC_LINKER_CREATED); 4347 if (s == NULL) 4348 return FALSE; 4349 4350 /* The .rel[a].bss section holds copy relocs. This section is not 4351 normally needed. We need to create it here, though, so that the 4352 linker will map it to an output section. We can't just create it 4353 only if we need it, because we will not know whether we need it 4354 until we have seen all the input files, and the first time the 4355 main linker code calls BFD after examining all the input files 4356 (size_dynamic_sections) the input sections have already been 4357 mapped to the output sections. If the section turns out not to 4358 be needed, we can discard it later. We will never need this 4359 section when generating a shared object, since they do not use 4360 copy relocs. */ 4361 if (! bfd_link_pic (info)) 4362 { 4363 s = bfd_make_section_anyway_with_flags (abfd, 4364 (bed->default_use_rela_p 4365 ? ".rela.bss" : ".rel.bss"), 4366 flags | SEC_READONLY); 4367 if (s == NULL 4368 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 4369 return FALSE; 4370 } 4371 } 4372 4373 return TRUE; 4374} 4375 4376/* Compute the total GOT and PLT size required by each symbol in each 4377 range. Symbols may require up to 4 words in the GOT: an entry 4378 pointing to the symbol, an entry pointing to its function 4379 descriptor, and a private function descriptors taking two 4380 words. */ 4381 4382static void 4383_frvfdpic_count_nontls_entries (struct frvfdpic_relocs_info *entry, 4384 struct _frvfdpic_dynamic_got_info *dinfo) 4385{ 4386 /* Allocate space for a GOT entry pointing to the symbol. */ 4387 if (entry->got12) 4388 dinfo->got12 += 4; 4389 else if (entry->gotlos) 4390 dinfo->gotlos += 4; 4391 else if (entry->gothilo) 4392 dinfo->gothilo += 4; 4393 else 4394 entry->relocs32--; 4395 entry->relocs32++; 4396 4397 /* Allocate space for a GOT entry pointing to the function 4398 descriptor. */ 4399 if (entry->fdgot12) 4400 dinfo->got12 += 4; 4401 else if (entry->fdgotlos) 4402 dinfo->gotlos += 4; 4403 else if (entry->fdgothilo) 4404 dinfo->gothilo += 4; 4405 else 4406 entry->relocsfd--; 4407 entry->relocsfd++; 4408 4409 /* Decide whether we need a PLT entry, a function descriptor in the 4410 GOT, and a lazy PLT entry for this symbol. */ 4411 entry->plt = entry->call 4412 && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) 4413 && elf_hash_table (dinfo->info)->dynamic_sections_created; 4414 entry->privfd = entry->plt 4415 || entry->fdgoff12 || entry->fdgofflos || entry->fdgoffhilo 4416 || ((entry->fd || entry->fdgot12 || entry->fdgotlos || entry->fdgothilo) 4417 && (entry->symndx != -1 4418 || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h))); 4419 entry->lazyplt = entry->privfd 4420 && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) 4421 && ! (dinfo->info->flags & DF_BIND_NOW) 4422 && elf_hash_table (dinfo->info)->dynamic_sections_created; 4423 4424 /* Allocate space for a function descriptor. */ 4425 if (entry->fdgoff12) 4426 dinfo->fd12 += 8; 4427 else if (entry->fdgofflos) 4428 dinfo->fdlos += 8; 4429 else if (entry->privfd && entry->plt) 4430 dinfo->fdplt += 8; 4431 else if (entry->privfd) 4432 dinfo->fdhilo += 8; 4433 else 4434 entry->relocsfdv--; 4435 entry->relocsfdv++; 4436 4437 if (entry->lazyplt) 4438 dinfo->lzplt += 8; 4439} 4440 4441/* Compute the total GOT size required by each TLS symbol in each 4442 range. Symbols may require up to 5 words in the GOT: an entry 4443 holding the TLS offset for the symbol, and an entry with a full TLS 4444 descriptor taking 4 words. */ 4445 4446static void 4447_frvfdpic_count_tls_entries (struct frvfdpic_relocs_info *entry, 4448 struct _frvfdpic_dynamic_got_info *dinfo, 4449 bfd_boolean subtract) 4450{ 4451 const int l = subtract ? -1 : 1; 4452 4453 /* Allocate space for a GOT entry with the TLS offset of the 4454 symbol. */ 4455 if (entry->tlsoff12) 4456 dinfo->got12 += 4 * l; 4457 else if (entry->tlsofflos) 4458 dinfo->gotlos += 4 * l; 4459 else if (entry->tlsoffhilo) 4460 dinfo->gothilo += 4 * l; 4461 else 4462 entry->relocstlsoff -= l; 4463 entry->relocstlsoff += l; 4464 4465 /* If there's any TLSOFF relocation, mark the output file as not 4466 suitable for dlopening. This mark will remain even if we relax 4467 all such relocations, but this is not a problem, since we'll only 4468 do so for executables, and we definitely don't want anyone 4469 dlopening executables. */ 4470 if (entry->relocstlsoff) 4471 dinfo->info->flags |= DF_STATIC_TLS; 4472 4473 /* Allocate space for a TLS descriptor. */ 4474 if (entry->tlsdesc12) 4475 dinfo->tlsd12 += 8 * l; 4476 else if (entry->tlsdesclos) 4477 dinfo->tlsdlos += 8 * l; 4478 else if (entry->tlsplt) 4479 dinfo->tlsdplt += 8 * l; 4480 else if (entry->tlsdeschilo) 4481 dinfo->tlsdhilo += 8 * l; 4482 else 4483 entry->relocstlsd -= l; 4484 entry->relocstlsd += l; 4485} 4486 4487/* Compute the number of dynamic relocations and fixups that a symbol 4488 requires, and add (or subtract) from the grand and per-symbol 4489 totals. */ 4490 4491static void 4492_frvfdpic_count_relocs_fixups (struct frvfdpic_relocs_info *entry, 4493 struct _frvfdpic_dynamic_got_info *dinfo, 4494 bfd_boolean subtract) 4495{ 4496 bfd_vma relocs = 0, fixups = 0, tlsrets = 0; 4497 4498 if (!bfd_link_pde (dinfo->info)) 4499 { 4500 relocs = entry->relocs32 + entry->relocsfd + entry->relocsfdv 4501 + entry->relocstlsd; 4502 4503 /* In the executable, TLS relocations to symbols that bind 4504 locally (including those that resolve to global TLS offsets) 4505 are resolved immediately, without any need for fixups or 4506 dynamic relocations. In shared libraries, however, we must 4507 emit dynamic relocations even for local symbols, because we 4508 don't know the module id the library is going to get at 4509 run-time, nor its TLS base offset. */ 4510 if (!bfd_link_executable (dinfo->info) 4511 || (entry->symndx == -1 4512 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))) 4513 relocs += entry->relocstlsoff; 4514 } 4515 else 4516 { 4517 if (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)) 4518 { 4519 if (entry->symndx != -1 4520 || entry->d.h->root.type != bfd_link_hash_undefweak) 4521 fixups += entry->relocs32 + 2 * entry->relocsfdv; 4522 fixups += entry->relocstlsd; 4523 tlsrets += entry->relocstlsd; 4524 } 4525 else 4526 { 4527 relocs += entry->relocs32 + entry->relocsfdv 4528 + entry->relocstlsoff + entry->relocstlsd; 4529 } 4530 4531 if (entry->symndx != -1 4532 || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h)) 4533 { 4534 if (entry->symndx != -1 4535 || entry->d.h->root.type != bfd_link_hash_undefweak) 4536 fixups += entry->relocsfd; 4537 } 4538 else 4539 relocs += entry->relocsfd; 4540 } 4541 4542 if (subtract) 4543 { 4544 relocs = - relocs; 4545 fixups = - fixups; 4546 tlsrets = - tlsrets; 4547 } 4548 4549 entry->dynrelocs += relocs; 4550 entry->fixups += fixups; 4551 dinfo->relocs += relocs; 4552 dinfo->fixups += fixups; 4553 dinfo->tls_ret_refs += tlsrets; 4554} 4555 4556/* Look for opportunities to relax TLS relocations. We can assume 4557 we're linking the main executable or a static-tls library, since 4558 otherwise we wouldn't have got here. When relaxing, we have to 4559 first undo any previous accounting of TLS uses of fixups, dynamic 4560 relocations, GOT and PLT entries. */ 4561 4562static void 4563_frvfdpic_relax_tls_entries (struct frvfdpic_relocs_info *entry, 4564 struct _frvfdpic_dynamic_got_info *dinfo, 4565 bfd_boolean relaxing) 4566{ 4567 bfd_boolean changed = ! relaxing; 4568 4569 BFD_ASSERT (bfd_link_executable (dinfo->info) 4570 || (dinfo->info->flags & DF_STATIC_TLS)); 4571 4572 if (entry->tlsdesc12 || entry->tlsdesclos || entry->tlsdeschilo) 4573 { 4574 if (! changed) 4575 { 4576 _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE); 4577 _frvfdpic_count_tls_entries (entry, dinfo, TRUE); 4578 changed = TRUE; 4579 } 4580 4581 /* When linking an executable, we can always decay GOTTLSDESC to 4582 TLSMOFF, if the symbol is local, or GOTTLSOFF, otherwise. 4583 When linking a static-tls shared library, using TLSMOFF is 4584 not an option, but we can still use GOTTLSOFF. When decaying 4585 to GOTTLSOFF, we must keep the GOT entry in range. We know 4586 it has to fit because we'll be trading the 4 words of hte TLS 4587 descriptor for a single word in the same range. */ 4588 if (! bfd_link_executable (dinfo->info) 4589 || (entry->symndx == -1 4590 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))) 4591 { 4592 entry->tlsoff12 |= entry->tlsdesc12; 4593 entry->tlsofflos |= entry->tlsdesclos; 4594 entry->tlsoffhilo |= entry->tlsdeschilo; 4595 } 4596 4597 entry->tlsdesc12 = entry->tlsdesclos = entry->tlsdeschilo = 0; 4598 } 4599 4600 /* We can only decay TLSOFFs or call #gettlsoff to TLSMOFF in the 4601 main executable. We have to check whether the symbol's TLSOFF is 4602 in range for a setlos. For symbols with a hash entry, we can 4603 determine exactly what to do; for others locals, we don't have 4604 addresses handy, so we use the size of the TLS section as an 4605 approximation. If we get it wrong, we'll retain a GOT entry 4606 holding the TLS offset (without dynamic relocations or fixups), 4607 but we'll still optimize away the loads from it. Since TLS sizes 4608 are generally very small, it's probably not worth attempting to 4609 do better than this. */ 4610 if ((entry->tlsplt 4611 || entry->tlsoff12 || entry->tlsofflos || entry->tlsoffhilo) 4612 && bfd_link_executable (dinfo->info) && relaxing 4613 && ((entry->symndx == -1 4614 && FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) 4615 /* The above may hold for an undefweak TLS symbol, so make 4616 sure we don't have this case before accessing def.value 4617 and def.section. */ 4618 && (entry->d.h->root.type == bfd_link_hash_undefweak 4619 || (bfd_vma)(entry->d.h->root.u.def.value 4620 + (entry->d.h->root.u.def.section 4621 ->output_section->vma) 4622 + entry->d.h->root.u.def.section->output_offset 4623 + entry->addend 4624 - tls_biased_base (dinfo->info) 4625 + 32768) < (bfd_vma)65536)) 4626 || (entry->symndx != -1 4627 && (elf_hash_table (dinfo->info)->tls_sec->size 4628 + entry->addend < 32768 + FRVFDPIC_TLS_BIAS)))) 4629 { 4630 if (! changed) 4631 { 4632 _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE); 4633 _frvfdpic_count_tls_entries (entry, dinfo, TRUE); 4634 changed = TRUE; 4635 } 4636 4637 entry->tlsplt = 4638 entry->tlsoff12 = entry->tlsofflos = entry->tlsoffhilo = 0; 4639 } 4640 4641 /* We can decay `call #gettlsoff' to a ldi #tlsoff if we already 4642 have a #gottlsoff12 relocation for this entry, or if we can fit 4643 one more in the 12-bit (and 16-bit) ranges. */ 4644 if (entry->tlsplt 4645 && (entry->tlsoff12 4646 || (relaxing 4647 && dinfo->got12 + dinfo->fd12 + dinfo->tlsd12 <= 4096 - 12 - 4 4648 && (dinfo->got12 + dinfo->fd12 + dinfo->tlsd12 4649 + dinfo->gotlos + dinfo->fdlos + dinfo->tlsdlos 4650 <= 65536 - 12 - 4)))) 4651 { 4652 if (! changed) 4653 { 4654 _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE); 4655 _frvfdpic_count_tls_entries (entry, dinfo, TRUE); 4656 changed = TRUE; 4657 } 4658 4659 entry->tlsoff12 = 1; 4660 entry->tlsplt = 0; 4661 } 4662 4663 if (changed) 4664 { 4665 _frvfdpic_count_tls_entries (entry, dinfo, FALSE); 4666 _frvfdpic_count_relocs_fixups (entry, dinfo, FALSE); 4667 } 4668 4669 return; 4670} 4671 4672/* Compute the total GOT and PLT size required by each symbol in each range. * 4673 Symbols may require up to 4 words in the GOT: an entry pointing to 4674 the symbol, an entry pointing to its function descriptor, and a 4675 private function descriptors taking two words. */ 4676 4677static int 4678_frvfdpic_count_got_plt_entries (void **entryp, void *dinfo_) 4679{ 4680 struct frvfdpic_relocs_info *entry = *entryp; 4681 struct _frvfdpic_dynamic_got_info *dinfo = dinfo_; 4682 4683 _frvfdpic_count_nontls_entries (entry, dinfo); 4684 4685 if (bfd_link_executable (dinfo->info) 4686 || (dinfo->info->flags & DF_STATIC_TLS)) 4687 _frvfdpic_relax_tls_entries (entry, dinfo, FALSE); 4688 else 4689 { 4690 _frvfdpic_count_tls_entries (entry, dinfo, FALSE); 4691 _frvfdpic_count_relocs_fixups (entry, dinfo, FALSE); 4692 } 4693 4694 return 1; 4695} 4696 4697/* Determine the positive and negative ranges to be used by each 4698 offset range in the GOT. FDCUR and CUR, that must be aligned to a 4699 double-word boundary, are the minimum (negative) and maximum 4700 (positive) GOT offsets already used by previous ranges, except for 4701 an ODD entry that may have been left behind. GOT and FD indicate 4702 the size of GOT entries and function descriptors that must be 4703 placed within the range from -WRAP to WRAP. If there's room left, 4704 up to FDPLT bytes should be reserved for additional function 4705 descriptors. */ 4706 4707inline static bfd_signed_vma 4708_frvfdpic_compute_got_alloc_data (struct _frvfdpic_dynamic_got_alloc_data *gad, 4709 bfd_signed_vma fdcur, 4710 bfd_signed_vma odd, 4711 bfd_signed_vma cur, 4712 bfd_vma got, 4713 bfd_vma fd, 4714 bfd_vma fdplt, 4715 bfd_vma tlsd, 4716 bfd_vma tlsdplt, 4717 bfd_vma wrap) 4718{ 4719 bfd_signed_vma wrapmin = -wrap; 4720 const bfd_vma tdescsz = 8; 4721 4722 /* Start at the given initial points. */ 4723 gad->fdcur = fdcur; 4724 gad->cur = cur; 4725 4726 /* If we had an incoming odd word and we have any got entries that 4727 are going to use it, consume it, otherwise leave gad->odd at 4728 zero. We might force gad->odd to zero and return the incoming 4729 odd such that it is used by the next range, but then GOT entries 4730 might appear to be out of order and we wouldn't be able to 4731 shorten the GOT by one word if it turns out to end with an 4732 unpaired GOT entry. */ 4733 if (odd && got) 4734 { 4735 gad->odd = odd; 4736 got -= 4; 4737 odd = 0; 4738 } 4739 else 4740 gad->odd = 0; 4741 4742 /* If we're left with an unpaired GOT entry, compute its location 4743 such that we can return it. Otherwise, if got doesn't require an 4744 odd number of words here, either odd was already zero in the 4745 block above, or it was set to zero because got was non-zero, or 4746 got was already zero. In the latter case, we want the value of 4747 odd to carry over to the return statement, so we don't want to 4748 reset odd unless the condition below is true. */ 4749 if (got & 4) 4750 { 4751 odd = cur + got; 4752 got += 4; 4753 } 4754 4755 /* Compute the tentative boundaries of this range. */ 4756 gad->max = cur + got; 4757 gad->min = fdcur - fd; 4758 gad->fdplt = 0; 4759 4760 /* If function descriptors took too much space, wrap some of them 4761 around. */ 4762 if (gad->min < wrapmin) 4763 { 4764 gad->max += wrapmin - gad->min; 4765 gad->tmin = gad->min = wrapmin; 4766 } 4767 4768 /* If GOT entries took too much space, wrap some of them around. 4769 This may well cause gad->min to become lower than wrapmin. This 4770 will cause a relocation overflow later on, so we don't have to 4771 report it here . */ 4772 if ((bfd_vma) gad->max > wrap) 4773 { 4774 gad->min -= gad->max - wrap; 4775 gad->max = wrap; 4776 } 4777 4778 /* Add TLS descriptors. */ 4779 gad->tmax = gad->max + tlsd; 4780 gad->tmin = gad->min; 4781 gad->tlsdplt = 0; 4782 4783 /* If TLS descriptors took too much space, wrap an integral number 4784 of them around. */ 4785 if ((bfd_vma) gad->tmax > wrap) 4786 { 4787 bfd_vma wrapsize = gad->tmax - wrap; 4788 4789 wrapsize += tdescsz / 2; 4790 wrapsize &= ~ tdescsz / 2; 4791 4792 gad->tmin -= wrapsize; 4793 gad->tmax -= wrapsize; 4794 } 4795 4796 /* If there is space left and we have function descriptors 4797 referenced in PLT entries that could take advantage of shorter 4798 offsets, place them now. */ 4799 if (fdplt && gad->tmin > wrapmin) 4800 { 4801 bfd_vma fds; 4802 4803 if ((bfd_vma) (gad->tmin - wrapmin) < fdplt) 4804 fds = gad->tmin - wrapmin; 4805 else 4806 fds = fdplt; 4807 4808 fdplt -= fds; 4809 gad->min -= fds; 4810 gad->tmin -= fds; 4811 gad->fdplt += fds; 4812 } 4813 4814 /* If there is more space left, try to place some more function 4815 descriptors for PLT entries. */ 4816 if (fdplt && (bfd_vma) gad->tmax < wrap) 4817 { 4818 bfd_vma fds; 4819 4820 if ((bfd_vma) (wrap - gad->tmax) < fdplt) 4821 fds = wrap - gad->tmax; 4822 else 4823 fds = fdplt; 4824 4825 fdplt -= fds; 4826 gad->max += fds; 4827 gad->tmax += fds; 4828 gad->fdplt += fds; 4829 } 4830 4831 /* If there is space left and we have TLS descriptors referenced in 4832 PLT entries that could take advantage of shorter offsets, place 4833 them now. */ 4834 if (tlsdplt && gad->tmin > wrapmin) 4835 { 4836 bfd_vma tlsds; 4837 4838 if ((bfd_vma) (gad->tmin - wrapmin) < tlsdplt) 4839 tlsds = (gad->tmin - wrapmin) & ~ (tdescsz / 2); 4840 else 4841 tlsds = tlsdplt; 4842 4843 tlsdplt -= tlsds; 4844 gad->tmin -= tlsds; 4845 gad->tlsdplt += tlsds; 4846 } 4847 4848 /* If there is more space left, try to place some more TLS 4849 descriptors for PLT entries. Although we could try to fit an 4850 additional TLS descriptor with half of it just before before the 4851 wrap point and another right past the wrap point, this might 4852 cause us to run out of space for the next region, so don't do 4853 it. */ 4854 if (tlsdplt && (bfd_vma) gad->tmax < wrap - tdescsz / 2) 4855 { 4856 bfd_vma tlsds; 4857 4858 if ((bfd_vma) (wrap - gad->tmax) < tlsdplt) 4859 tlsds = (wrap - gad->tmax) & ~ (tdescsz / 2); 4860 else 4861 tlsds = tlsdplt; 4862 4863 tlsdplt -= tlsds; 4864 gad->tmax += tlsds; 4865 gad->tlsdplt += tlsds; 4866 } 4867 4868 /* If odd was initially computed as an offset past the wrap point, 4869 wrap it around. */ 4870 if (odd > gad->max) 4871 odd = gad->min + odd - gad->max; 4872 4873 /* _frvfdpic_get_got_entry() below will always wrap gad->cur if needed 4874 before returning, so do it here too. This guarantees that, 4875 should cur and fdcur meet at the wrap point, they'll both be 4876 equal to min. */ 4877 if (gad->cur == gad->max) 4878 gad->cur = gad->min; 4879 4880 /* Ditto for _frvfdpic_get_tlsdesc_entry(). */ 4881 gad->tcur = gad->max; 4882 if (gad->tcur == gad->tmax) 4883 gad->tcur = gad->tmin; 4884 4885 return odd; 4886} 4887 4888/* Compute the location of the next GOT entry, given the allocation 4889 data for a range. */ 4890 4891inline static bfd_signed_vma 4892_frvfdpic_get_got_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) 4893{ 4894 bfd_signed_vma ret; 4895 4896 if (gad->odd) 4897 { 4898 /* If there was an odd word left behind, use it. */ 4899 ret = gad->odd; 4900 gad->odd = 0; 4901 } 4902 else 4903 { 4904 /* Otherwise, use the word pointed to by cur, reserve the next 4905 as an odd word, and skip to the next pair of words, possibly 4906 wrapping around. */ 4907 ret = gad->cur; 4908 gad->odd = gad->cur + 4; 4909 gad->cur += 8; 4910 if (gad->cur == gad->max) 4911 gad->cur = gad->min; 4912 } 4913 4914 return ret; 4915} 4916 4917/* Compute the location of the next function descriptor entry in the 4918 GOT, given the allocation data for a range. */ 4919 4920inline static bfd_signed_vma 4921_frvfdpic_get_fd_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) 4922{ 4923 /* If we're at the bottom, wrap around, and only then allocate the 4924 next pair of words. */ 4925 if (gad->fdcur == gad->min) 4926 gad->fdcur = gad->max; 4927 return gad->fdcur -= 8; 4928} 4929 4930/* Compute the location of the next TLS descriptor entry in the GOT, 4931 given the allocation data for a range. */ 4932inline static bfd_signed_vma 4933_frvfdpic_get_tlsdesc_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) 4934{ 4935 bfd_signed_vma ret; 4936 4937 ret = gad->tcur; 4938 4939 gad->tcur += 8; 4940 4941 /* If we're at the top of the region, wrap around to the bottom. */ 4942 if (gad->tcur == gad->tmax) 4943 gad->tcur = gad->tmin; 4944 4945 return ret; 4946} 4947 4948/* Assign GOT offsets for every GOT entry and function descriptor. 4949 Doing everything in a single pass is tricky. */ 4950 4951static int 4952_frvfdpic_assign_got_entries (void **entryp, void *info_) 4953{ 4954 struct frvfdpic_relocs_info *entry = *entryp; 4955 struct _frvfdpic_dynamic_got_plt_info *dinfo = info_; 4956 4957 if (entry->got12) 4958 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->got12); 4959 else if (entry->gotlos) 4960 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); 4961 else if (entry->gothilo) 4962 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); 4963 4964 if (entry->fdgot12) 4965 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->got12); 4966 else if (entry->fdgotlos) 4967 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); 4968 else if (entry->fdgothilo) 4969 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); 4970 4971 if (entry->fdgoff12) 4972 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12); 4973 else if (entry->plt && dinfo->got12.fdplt) 4974 { 4975 dinfo->got12.fdplt -= 8; 4976 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12); 4977 } 4978 else if (entry->fdgofflos) 4979 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos); 4980 else if (entry->plt && dinfo->gotlos.fdplt) 4981 { 4982 dinfo->gotlos.fdplt -= 8; 4983 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos); 4984 } 4985 else if (entry->plt) 4986 { 4987 dinfo->gothilo.fdplt -= 8; 4988 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo); 4989 } 4990 else if (entry->privfd) 4991 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo); 4992 4993 if (entry->tlsoff12) 4994 entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->got12); 4995 else if (entry->tlsofflos) 4996 entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); 4997 else if (entry->tlsoffhilo) 4998 entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); 4999 5000 if (entry->tlsdesc12) 5001 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->got12); 5002 else if (entry->tlsplt && dinfo->got12.tlsdplt) 5003 { 5004 dinfo->got12.tlsdplt -= 8; 5005 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->got12); 5006 } 5007 else if (entry->tlsdesclos) 5008 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gotlos); 5009 else if (entry->tlsplt && dinfo->gotlos.tlsdplt) 5010 { 5011 dinfo->gotlos.tlsdplt -= 8; 5012 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gotlos); 5013 } 5014 else if (entry->tlsplt) 5015 { 5016 dinfo->gothilo.tlsdplt -= 8; 5017 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gothilo); 5018 } 5019 else if (entry->tlsdeschilo) 5020 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gothilo); 5021 5022 return 1; 5023} 5024 5025/* Assign GOT offsets to private function descriptors used by PLT 5026 entries (or referenced by 32-bit offsets), as well as PLT entries 5027 and lazy PLT entries. */ 5028 5029static int 5030_frvfdpic_assign_plt_entries (void **entryp, void *info_) 5031{ 5032 struct frvfdpic_relocs_info *entry = *entryp; 5033 struct _frvfdpic_dynamic_got_plt_info *dinfo = info_; 5034 5035 if (entry->privfd) 5036 BFD_ASSERT (entry->fd_entry); 5037 5038 if (entry->plt) 5039 { 5040 int size; 5041 5042 /* We use the section's raw size to mark the location of the 5043 next PLT entry. */ 5044 entry->plt_entry = frvfdpic_plt_section (dinfo->g.info)->size; 5045 5046 /* Figure out the length of this PLT entry based on the 5047 addressing mode we need to reach the function descriptor. */ 5048 BFD_ASSERT (entry->fd_entry); 5049 if (entry->fd_entry >= -(1 << (12 - 1)) 5050 && entry->fd_entry < (1 << (12 - 1))) 5051 size = 8; 5052 else if (entry->fd_entry >= -(1 << (16 - 1)) 5053 && entry->fd_entry < (1 << (16 - 1))) 5054 size = 12; 5055 else 5056 size = 16; 5057 5058 frvfdpic_plt_section (dinfo->g.info)->size += size; 5059 } 5060 5061 if (entry->lazyplt) 5062 { 5063 entry->lzplt_entry = dinfo->g.lzplt; 5064 dinfo->g.lzplt += 8; 5065 /* If this entry is the one that gets the resolver stub, account 5066 for the additional instruction. */ 5067 if (entry->lzplt_entry % FRVFDPIC_LZPLT_BLOCK_SIZE 5068 == FRVFDPIC_LZPLT_RESOLV_LOC) 5069 dinfo->g.lzplt += 4; 5070 } 5071 5072 if (entry->tlsplt) 5073 { 5074 int size; 5075 5076 entry->tlsplt_entry 5077 = frvfdpic_plt_section (dinfo->g.info)->size; 5078 5079 if (bfd_link_executable (dinfo->g.info) 5080 && (entry->symndx != -1 5081 || FRVFDPIC_SYM_LOCAL (dinfo->g.info, entry->d.h))) 5082 { 5083 if ((bfd_signed_vma)entry->addend >= -(1 << (16 - 1)) 5084 /* FIXME: here we use the size of the TLS section 5085 as an upper bound for the value of the TLS 5086 symbol, because we may not know the exact value 5087 yet. If we get it wrong, we'll just waste a 5088 word in the PLT, and we should never get even 5089 close to 32 KiB of TLS anyway. */ 5090 && elf_hash_table (dinfo->g.info)->tls_sec 5091 && (elf_hash_table (dinfo->g.info)->tls_sec->size 5092 + (bfd_signed_vma)(entry->addend) <= (1 << (16 - 1)))) 5093 size = 8; 5094 else 5095 size = 12; 5096 } 5097 else if (entry->tlsoff_entry) 5098 { 5099 if (entry->tlsoff_entry >= -(1 << (12 - 1)) 5100 && entry->tlsoff_entry < (1 << (12 - 1))) 5101 size = 8; 5102 else if (entry->tlsoff_entry >= -(1 << (16 - 1)) 5103 && entry->tlsoff_entry < (1 << (16 - 1))) 5104 size = 12; 5105 else 5106 size = 16; 5107 } 5108 else 5109 { 5110 BFD_ASSERT (entry->tlsdesc_entry); 5111 5112 if (entry->tlsdesc_entry >= -(1 << (12 - 1)) 5113 && entry->tlsdesc_entry < (1 << (12 - 1))) 5114 size = 8; 5115 else if (entry->tlsdesc_entry >= -(1 << (16 - 1)) 5116 && entry->tlsdesc_entry < (1 << (16 - 1))) 5117 size = 12; 5118 else 5119 size = 16; 5120 } 5121 5122 frvfdpic_plt_section (dinfo->g.info)->size += size; 5123 } 5124 5125 return 1; 5126} 5127 5128/* Cancel out any effects of calling _frvfdpic_assign_got_entries and 5129 _frvfdpic_assign_plt_entries. */ 5130 5131static int 5132_frvfdpic_reset_got_plt_entries (void **entryp, void *ignore ATTRIBUTE_UNUSED) 5133{ 5134 struct frvfdpic_relocs_info *entry = *entryp; 5135 5136 entry->got_entry = 0; 5137 entry->fdgot_entry = 0; 5138 entry->fd_entry = 0; 5139 entry->plt_entry = (bfd_vma)-1; 5140 entry->lzplt_entry = (bfd_vma)-1; 5141 entry->tlsoff_entry = 0; 5142 entry->tlsdesc_entry = 0; 5143 entry->tlsplt_entry = (bfd_vma)-1; 5144 5145 return 1; 5146} 5147 5148/* Follow indirect and warning hash entries so that each got entry 5149 points to the final symbol definition. P must point to a pointer 5150 to the hash table we're traversing. Since this traversal may 5151 modify the hash table, we set this pointer to NULL to indicate 5152 we've made a potentially-destructive change to the hash table, so 5153 the traversal must be restarted. */ 5154static int 5155_frvfdpic_resolve_final_relocs_info (void **entryp, void *p) 5156{ 5157 struct frvfdpic_relocs_info *entry = *entryp; 5158 htab_t *htab = p; 5159 5160 if (entry->symndx == -1) 5161 { 5162 struct elf_link_hash_entry *h = entry->d.h; 5163 struct frvfdpic_relocs_info *oentry; 5164 5165 while (h->root.type == bfd_link_hash_indirect 5166 || h->root.type == bfd_link_hash_warning) 5167 h = (struct elf_link_hash_entry *)h->root.u.i.link; 5168 5169 if (entry->d.h == h) 5170 return 1; 5171 5172 oentry = frvfdpic_relocs_info_for_global (*htab, 0, h, entry->addend, 5173 NO_INSERT); 5174 5175 if (oentry) 5176 { 5177 /* Merge the two entries. */ 5178 frvfdpic_pic_merge_early_relocs_info (oentry, entry); 5179 htab_clear_slot (*htab, entryp); 5180 return 1; 5181 } 5182 5183 entry->d.h = h; 5184 5185 /* If we can't find this entry with the new bfd hash, re-insert 5186 it, and get the traversal restarted. */ 5187 if (! htab_find (*htab, entry)) 5188 { 5189 htab_clear_slot (*htab, entryp); 5190 entryp = htab_find_slot (*htab, entry, INSERT); 5191 if (! *entryp) 5192 *entryp = entry; 5193 /* Abort the traversal, since the whole table may have 5194 moved, and leave it up to the parent to restart the 5195 process. */ 5196 *(htab_t *)p = NULL; 5197 return 0; 5198 } 5199 } 5200 5201 return 1; 5202} 5203 5204/* Compute the total size of the GOT, the PLT, the dynamic relocations 5205 section and the rofixup section. Assign locations for GOT and PLT 5206 entries. */ 5207 5208static bfd_boolean 5209_frvfdpic_size_got_plt (bfd *output_bfd, 5210 struct _frvfdpic_dynamic_got_plt_info *gpinfop) 5211{ 5212 bfd_signed_vma odd; 5213 bfd_vma limit, tlslimit; 5214 struct bfd_link_info *info = gpinfop->g.info; 5215 bfd *dynobj = elf_hash_table (info)->dynobj; 5216 5217 memcpy (frvfdpic_dynamic_got_plt_info (info), &gpinfop->g, 5218 sizeof (gpinfop->g)); 5219 5220 odd = 12; 5221 /* Compute the total size taken by entries in the 12-bit and 16-bit 5222 ranges, to tell how many PLT function descriptors we can bring 5223 into the 12-bit range without causing the 16-bit range to 5224 overflow. */ 5225 limit = odd + gpinfop->g.got12 + gpinfop->g.gotlos 5226 + gpinfop->g.fd12 + gpinfop->g.fdlos 5227 + gpinfop->g.tlsd12 + gpinfop->g.tlsdlos; 5228 if (limit < (bfd_vma)1 << 16) 5229 limit = ((bfd_vma)1 << 16) - limit; 5230 else 5231 limit = 0; 5232 if (gpinfop->g.fdplt < limit) 5233 { 5234 tlslimit = (limit - gpinfop->g.fdplt) & ~ (bfd_vma) 8; 5235 limit = gpinfop->g.fdplt; 5236 } 5237 else 5238 tlslimit = 0; 5239 if (gpinfop->g.tlsdplt < tlslimit) 5240 tlslimit = gpinfop->g.tlsdplt; 5241 5242 /* Determine the ranges of GOT offsets that we can use for each 5243 range of addressing modes. */ 5244 odd = _frvfdpic_compute_got_alloc_data (&gpinfop->got12, 5245 0, 5246 odd, 5247 16, 5248 gpinfop->g.got12, 5249 gpinfop->g.fd12, 5250 limit, 5251 gpinfop->g.tlsd12, 5252 tlslimit, 5253 (bfd_vma)1 << (12-1)); 5254 odd = _frvfdpic_compute_got_alloc_data (&gpinfop->gotlos, 5255 gpinfop->got12.tmin, 5256 odd, 5257 gpinfop->got12.tmax, 5258 gpinfop->g.gotlos, 5259 gpinfop->g.fdlos, 5260 gpinfop->g.fdplt 5261 - gpinfop->got12.fdplt, 5262 gpinfop->g.tlsdlos, 5263 gpinfop->g.tlsdplt 5264 - gpinfop->got12.tlsdplt, 5265 (bfd_vma)1 << (16-1)); 5266 odd = _frvfdpic_compute_got_alloc_data (&gpinfop->gothilo, 5267 gpinfop->gotlos.tmin, 5268 odd, 5269 gpinfop->gotlos.tmax, 5270 gpinfop->g.gothilo, 5271 gpinfop->g.fdhilo, 5272 gpinfop->g.fdplt 5273 - gpinfop->got12.fdplt 5274 - gpinfop->gotlos.fdplt, 5275 gpinfop->g.tlsdhilo, 5276 gpinfop->g.tlsdplt 5277 - gpinfop->got12.tlsdplt 5278 - gpinfop->gotlos.tlsdplt, 5279 (bfd_vma)1 << (32-1)); 5280 5281 /* Now assign (most) GOT offsets. */ 5282 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_got_entries, 5283 gpinfop); 5284 5285 frvfdpic_got_section (info)->size = gpinfop->gothilo.tmax 5286 - gpinfop->gothilo.tmin 5287 /* If an odd word is the last word of the GOT, we don't need this 5288 word to be part of the GOT. */ 5289 - (odd + 4 == gpinfop->gothilo.tmax ? 4 : 0); 5290 if (frvfdpic_got_section (info)->size == 0) 5291 frvfdpic_got_section (info)->flags |= SEC_EXCLUDE; 5292 else if (frvfdpic_got_section (info)->size == 12 5293 && ! elf_hash_table (info)->dynamic_sections_created) 5294 { 5295 frvfdpic_got_section (info)->flags |= SEC_EXCLUDE; 5296 frvfdpic_got_section (info)->size = 0; 5297 } 5298 /* This will be non-NULL during relaxation. The assumption is that 5299 the size of one of these sections will never grow, only shrink, 5300 so we can use the larger buffer we allocated before. */ 5301 else if (frvfdpic_got_section (info)->contents == NULL) 5302 { 5303 frvfdpic_got_section (info)->contents = 5304 (bfd_byte *) bfd_zalloc (dynobj, 5305 frvfdpic_got_section (info)->size); 5306 if (frvfdpic_got_section (info)->contents == NULL) 5307 return FALSE; 5308 } 5309 5310 if (frvfdpic_gotrel_section (info)) 5311 /* Subtract the number of lzplt entries, since those will generate 5312 relocations in the pltrel section. */ 5313 frvfdpic_gotrel_section (info)->size = 5314 (gpinfop->g.relocs - gpinfop->g.lzplt / 8) 5315 * get_elf_backend_data (output_bfd)->s->sizeof_rel; 5316 else 5317 BFD_ASSERT (gpinfop->g.relocs == 0); 5318 if (frvfdpic_gotrel_section (info)->size == 0) 5319 frvfdpic_gotrel_section (info)->flags |= SEC_EXCLUDE; 5320 else if (frvfdpic_gotrel_section (info)->contents == NULL) 5321 { 5322 frvfdpic_gotrel_section (info)->contents = 5323 (bfd_byte *) bfd_zalloc (dynobj, 5324 frvfdpic_gotrel_section (info)->size); 5325 if (frvfdpic_gotrel_section (info)->contents == NULL) 5326 return FALSE; 5327 } 5328 5329 frvfdpic_gotfixup_section (info)->size = (gpinfop->g.fixups + 1) * 4; 5330 if (frvfdpic_gotfixup_section (info)->size == 0) 5331 frvfdpic_gotfixup_section (info)->flags |= SEC_EXCLUDE; 5332 else if (frvfdpic_gotfixup_section (info)->contents == NULL) 5333 { 5334 frvfdpic_gotfixup_section (info)->contents = 5335 (bfd_byte *) bfd_zalloc (dynobj, 5336 frvfdpic_gotfixup_section (info)->size); 5337 if (frvfdpic_gotfixup_section (info)->contents == NULL) 5338 return FALSE; 5339 } 5340 5341 if (frvfdpic_pltrel_section (info)) 5342 { 5343 frvfdpic_pltrel_section (info)->size = 5344 gpinfop->g.lzplt / 8 5345 * get_elf_backend_data (output_bfd)->s->sizeof_rel; 5346 if (frvfdpic_pltrel_section (info)->size == 0) 5347 frvfdpic_pltrel_section (info)->flags |= SEC_EXCLUDE; 5348 else if (frvfdpic_pltrel_section (info)->contents == NULL) 5349 { 5350 frvfdpic_pltrel_section (info)->contents = 5351 (bfd_byte *) bfd_zalloc (dynobj, 5352 frvfdpic_pltrel_section (info)->size); 5353 if (frvfdpic_pltrel_section (info)->contents == NULL) 5354 return FALSE; 5355 } 5356 } 5357 5358 /* Add 4 bytes for every block of at most 65535 lazy PLT entries, 5359 such that there's room for the additional instruction needed to 5360 call the resolver. Since _frvfdpic_assign_got_entries didn't 5361 account for them, our block size is 4 bytes smaller than the real 5362 block size. */ 5363 if (frvfdpic_plt_section (info)) 5364 { 5365 frvfdpic_plt_section (info)->size = gpinfop->g.lzplt 5366 + ((gpinfop->g.lzplt + (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) - 8) 5367 / (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) * 4); 5368 } 5369 5370 /* Reset it, such that _frvfdpic_assign_plt_entries() can use it to 5371 actually assign lazy PLT entries addresses. */ 5372 gpinfop->g.lzplt = 0; 5373 5374 /* Save information that we're going to need to generate GOT and PLT 5375 entries. */ 5376 frvfdpic_got_initial_offset (info) = -gpinfop->gothilo.tmin; 5377 5378 if (get_elf_backend_data (output_bfd)->want_got_sym) 5379 elf_hash_table (info)->hgot->root.u.def.value 5380 = frvfdpic_got_initial_offset (info); 5381 5382 if (frvfdpic_plt_section (info)) 5383 frvfdpic_plt_initial_offset (info) = 5384 frvfdpic_plt_section (info)->size; 5385 5386 /* Allocate a ret statement at plt_initial_offset, to be used by 5387 locally-resolved TLS descriptors. */ 5388 if (gpinfop->g.tls_ret_refs) 5389 frvfdpic_plt_section (info)->size += 4; 5390 5391 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_plt_entries, 5392 gpinfop); 5393 5394 /* Allocate the PLT section contents only after 5395 _frvfdpic_assign_plt_entries has a chance to add the size of the 5396 non-lazy PLT entries. */ 5397 if (frvfdpic_plt_section (info)) 5398 { 5399 if (frvfdpic_plt_section (info)->size == 0) 5400 frvfdpic_plt_section (info)->flags |= SEC_EXCLUDE; 5401 else if (frvfdpic_plt_section (info)->contents == NULL) 5402 { 5403 frvfdpic_plt_section (info)->contents = 5404 (bfd_byte *) bfd_zalloc (dynobj, 5405 frvfdpic_plt_section (info)->size); 5406 if (frvfdpic_plt_section (info)->contents == NULL) 5407 return FALSE; 5408 } 5409 } 5410 5411 return TRUE; 5412} 5413 5414/* Set the sizes of the dynamic sections. */ 5415 5416static bfd_boolean 5417elf32_frvfdpic_size_dynamic_sections (bfd *output_bfd, 5418 struct bfd_link_info *info) 5419{ 5420 bfd *dynobj; 5421 asection *s; 5422 struct _frvfdpic_dynamic_got_plt_info gpinfo; 5423 5424 dynobj = elf_hash_table (info)->dynobj; 5425 BFD_ASSERT (dynobj != NULL); 5426 5427 if (elf_hash_table (info)->dynamic_sections_created) 5428 { 5429 /* Set the contents of the .interp section to the interpreter. */ 5430 if (bfd_link_executable (info) && !info->nointerp) 5431 { 5432 s = bfd_get_linker_section (dynobj, ".interp"); 5433 BFD_ASSERT (s != NULL); 5434 s->size = sizeof ELF_DYNAMIC_INTERPRETER; 5435 s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; 5436 } 5437 } 5438 5439 memset (&gpinfo, 0, sizeof (gpinfo)); 5440 gpinfo.g.info = info; 5441 5442 for (;;) 5443 { 5444 htab_t relocs = frvfdpic_relocs_info (info); 5445 5446 htab_traverse (relocs, _frvfdpic_resolve_final_relocs_info, &relocs); 5447 5448 if (relocs == frvfdpic_relocs_info (info)) 5449 break; 5450 } 5451 5452 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_count_got_plt_entries, 5453 &gpinfo.g); 5454 5455 /* Allocate space to save the summary information, we're going to 5456 use it if we're doing relaxations. */ 5457 frvfdpic_dynamic_got_plt_info (info) = bfd_alloc (dynobj, sizeof (gpinfo.g)); 5458 5459 if (!_frvfdpic_size_got_plt (output_bfd, &gpinfo)) 5460 return FALSE; 5461 5462 if (elf_hash_table (info)->dynamic_sections_created) 5463 { 5464 if (frvfdpic_got_section (info)->size) 5465 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)) 5466 return FALSE; 5467 5468 if (frvfdpic_pltrel_section (info)->size) 5469 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) 5470 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_REL) 5471 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) 5472 return FALSE; 5473 5474 if (frvfdpic_gotrel_section (info)->size) 5475 if (!_bfd_elf_add_dynamic_entry (info, DT_REL, 0) 5476 || !_bfd_elf_add_dynamic_entry (info, DT_RELSZ, 0) 5477 || !_bfd_elf_add_dynamic_entry (info, DT_RELENT, 5478 sizeof (Elf32_External_Rel))) 5479 return FALSE; 5480 } 5481 5482 return TRUE; 5483} 5484 5485static bfd_boolean 5486elf32_frvfdpic_always_size_sections (bfd *output_bfd, 5487 struct bfd_link_info *info) 5488{ 5489 if (!bfd_link_relocatable (info) 5490 && !bfd_elf_stack_segment_size (output_bfd, info, 5491 "__stacksize", DEFAULT_STACK_SIZE)) 5492 return FALSE; 5493 5494 return TRUE; 5495} 5496 5497/* Check whether any of the relocations was optimized away, and 5498 subtract it from the relocation or fixup count. */ 5499static bfd_boolean 5500_frvfdpic_check_discarded_relocs (bfd *abfd, asection *sec, 5501 struct bfd_link_info *info, 5502 5503 bfd_boolean *changed) 5504{ 5505 Elf_Internal_Shdr *symtab_hdr; 5506 struct elf_link_hash_entry **sym_hashes; 5507 Elf_Internal_Rela *rel, *erel; 5508 5509 if ((sec->flags & SEC_RELOC) == 0 5510 || sec->reloc_count == 0) 5511 return TRUE; 5512 5513 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 5514 sym_hashes = elf_sym_hashes (abfd); 5515 5516 rel = elf_section_data (sec)->relocs; 5517 5518 /* Now examine each relocation. */ 5519 for (erel = rel + sec->reloc_count; rel < erel; rel++) 5520 { 5521 struct elf_link_hash_entry *h; 5522 unsigned long r_symndx; 5523 struct frvfdpic_relocs_info *picrel; 5524 struct _frvfdpic_dynamic_got_info *dinfo; 5525 5526 if (ELF32_R_TYPE (rel->r_info) != R_FRV_32 5527 && ELF32_R_TYPE (rel->r_info) != R_FRV_FUNCDESC) 5528 continue; 5529 5530 if (_bfd_elf_section_offset (sec->output_section->owner, 5531 info, sec, rel->r_offset) 5532 != (bfd_vma)-1) 5533 continue; 5534 5535 r_symndx = ELF32_R_SYM (rel->r_info); 5536 if (r_symndx < symtab_hdr->sh_info) 5537 h = NULL; 5538 else 5539 { 5540 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 5541 while (h->root.type == bfd_link_hash_indirect 5542 || h->root.type == bfd_link_hash_warning) 5543 h = (struct elf_link_hash_entry *)h->root.u.i.link; 5544 } 5545 5546 if (h != NULL) 5547 picrel = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info (info), 5548 abfd, h, 5549 rel->r_addend, NO_INSERT); 5550 else 5551 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info (info), 5552 abfd, r_symndx, 5553 rel->r_addend, NO_INSERT); 5554 5555 if (! picrel) 5556 return FALSE; 5557 5558 *changed = TRUE; 5559 dinfo = frvfdpic_dynamic_got_plt_info (info); 5560 5561 _frvfdpic_count_relocs_fixups (picrel, dinfo, TRUE); 5562 if (ELF32_R_TYPE (rel->r_info) == R_FRV_32) 5563 picrel->relocs32--; 5564 else /* we know (ELF32_R_TYPE (rel->r_info) == R_FRV_FUNCDESC) */ 5565 picrel->relocsfd--; 5566 _frvfdpic_count_relocs_fixups (picrel, dinfo, FALSE); 5567 } 5568 5569 return TRUE; 5570} 5571 5572static bfd_boolean 5573frvfdpic_elf_discard_info (bfd *ibfd, 5574 struct elf_reloc_cookie *cookie ATTRIBUTE_UNUSED, 5575 struct bfd_link_info *info) 5576{ 5577 bfd_boolean changed = FALSE; 5578 asection *s; 5579 bfd *obfd = NULL; 5580 5581 /* Account for relaxation of .eh_frame section. */ 5582 for (s = ibfd->sections; s; s = s->next) 5583 if (s->sec_info_type == SEC_INFO_TYPE_EH_FRAME) 5584 { 5585 if (!_frvfdpic_check_discarded_relocs (ibfd, s, info, &changed)) 5586 return FALSE; 5587 obfd = s->output_section->owner; 5588 } 5589 5590 if (changed) 5591 { 5592 struct _frvfdpic_dynamic_got_plt_info gpinfo; 5593 5594 memset (&gpinfo, 0, sizeof (gpinfo)); 5595 memcpy (&gpinfo.g, frvfdpic_dynamic_got_plt_info (info), 5596 sizeof (gpinfo.g)); 5597 5598 /* Clear GOT and PLT assignments. */ 5599 htab_traverse (frvfdpic_relocs_info (info), 5600 _frvfdpic_reset_got_plt_entries, 5601 NULL); 5602 5603 if (!_frvfdpic_size_got_plt (obfd, &gpinfo)) 5604 return FALSE; 5605 } 5606 5607 return TRUE; 5608} 5609 5610/* Look for opportunities to relax TLS relocations. We can assume 5611 we're linking the main executable or a static-tls library, since 5612 otherwise we wouldn't have got here. */ 5613 5614static int 5615_frvfdpic_relax_got_plt_entries (void **entryp, void *dinfo_) 5616{ 5617 struct frvfdpic_relocs_info *entry = *entryp; 5618 struct _frvfdpic_dynamic_got_info *dinfo = dinfo_; 5619 5620 _frvfdpic_relax_tls_entries (entry, dinfo, TRUE); 5621 5622 return 1; 5623} 5624 5625static bfd_boolean 5626elf32_frvfdpic_relax_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, 5627 struct bfd_link_info *info, bfd_boolean *again) 5628{ 5629 struct _frvfdpic_dynamic_got_plt_info gpinfo; 5630 5631 if (bfd_link_relocatable (info)) 5632 (*info->callbacks->einfo) 5633 (_("%P%F: --relax and -r may not be used together\n")); 5634 5635 /* If we return early, we didn't change anything. */ 5636 *again = FALSE; 5637 5638 /* We'll do our thing when requested to relax the GOT section. */ 5639 if (sec != frvfdpic_got_section (info)) 5640 return TRUE; 5641 5642 /* We can only relax when linking the main executable or a library 5643 that can't be dlopened. */ 5644 if (! bfd_link_executable (info) && ! (info->flags & DF_STATIC_TLS)) 5645 return TRUE; 5646 5647 /* If there isn't a TLS section for this binary, we can't do 5648 anything about its TLS relocations (it probably doesn't have 5649 any. */ 5650 if (elf_hash_table (info)->tls_sec == NULL) 5651 return TRUE; 5652 5653 memset (&gpinfo, 0, sizeof (gpinfo)); 5654 memcpy (&gpinfo.g, frvfdpic_dynamic_got_plt_info (info), sizeof (gpinfo.g)); 5655 5656 /* Now look for opportunities to relax, adjusting the GOT usage 5657 as needed. */ 5658 htab_traverse (frvfdpic_relocs_info (info), 5659 _frvfdpic_relax_got_plt_entries, 5660 &gpinfo.g); 5661 5662 /* If we changed anything, reset and re-assign GOT and PLT entries. */ 5663 if (memcmp (frvfdpic_dynamic_got_plt_info (info), 5664 &gpinfo.g, sizeof (gpinfo.g)) != 0) 5665 { 5666 /* Clear GOT and PLT assignments. */ 5667 htab_traverse (frvfdpic_relocs_info (info), 5668 _frvfdpic_reset_got_plt_entries, 5669 NULL); 5670 5671 /* The owner of the TLS section is the output bfd. There should 5672 be a better way to get to it. */ 5673 if (!_frvfdpic_size_got_plt (elf_hash_table (info)->tls_sec->owner, 5674 &gpinfo)) 5675 return FALSE; 5676 5677 /* Repeat until we don't make any further changes. We could fail to 5678 introduce changes in a round if, for example, the 12-bit range is 5679 full, but we later release some space by getting rid of TLS 5680 descriptors in it. We have to repeat the whole process because 5681 we might have changed the size of a section processed before this 5682 one. */ 5683 *again = TRUE; 5684 } 5685 5686 return TRUE; 5687} 5688 5689/* Fill in code and data in dynamic sections. */ 5690 5691static bfd_boolean 5692elf32_frv_finish_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 5693 struct bfd_link_info *info ATTRIBUTE_UNUSED) 5694{ 5695 /* Nothing to be done for non-FDPIC. */ 5696 return TRUE; 5697} 5698 5699static bfd_boolean 5700elf32_frvfdpic_finish_dynamic_sections (bfd *output_bfd, 5701 struct bfd_link_info *info) 5702{ 5703 bfd *dynobj; 5704 asection *sdyn; 5705 5706 dynobj = elf_hash_table (info)->dynobj; 5707 5708 if (frvfdpic_dynamic_got_plt_info (info)) 5709 { 5710 BFD_ASSERT (frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs == 0); 5711 } 5712 if (frvfdpic_got_section (info)) 5713 { 5714 BFD_ASSERT (frvfdpic_gotrel_section (info)->size 5715 == (frvfdpic_gotrel_section (info)->reloc_count 5716 * sizeof (Elf32_External_Rel))); 5717 5718 if (frvfdpic_gotfixup_section (info)) 5719 { 5720 struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot; 5721 bfd_vma got_value = hgot->root.u.def.value 5722 + hgot->root.u.def.section->output_section->vma 5723 + hgot->root.u.def.section->output_offset; 5724 struct bfd_link_hash_entry *hend; 5725 5726 _frvfdpic_add_rofixup (output_bfd, frvfdpic_gotfixup_section (info), 5727 got_value, 0); 5728 5729 if (frvfdpic_gotfixup_section (info)->size 5730 != (frvfdpic_gotfixup_section (info)->reloc_count * 4)) 5731 { 5732 error: 5733 info->callbacks->einfo 5734 ("LINKER BUG: .rofixup section size mismatch\n"); 5735 return FALSE; 5736 } 5737 5738 hend = bfd_link_hash_lookup (info->hash, "__ROFIXUP_END__", 5739 FALSE, FALSE, TRUE); 5740 if (hend 5741 && (hend->type == bfd_link_hash_defined 5742 || hend->type == bfd_link_hash_defweak) 5743 && hend->u.def.section->output_section != NULL) 5744 { 5745 bfd_vma value = 5746 frvfdpic_gotfixup_section (info)->output_section->vma 5747 + frvfdpic_gotfixup_section (info)->output_offset 5748 + frvfdpic_gotfixup_section (info)->size 5749 - hend->u.def.section->output_section->vma 5750 - hend->u.def.section->output_offset; 5751 BFD_ASSERT (hend->u.def.value == value); 5752 if (hend->u.def.value != value) 5753 goto error; 5754 } 5755 } 5756 } 5757 if (frvfdpic_pltrel_section (info)) 5758 { 5759 BFD_ASSERT (frvfdpic_pltrel_section (info)->size 5760 == (frvfdpic_pltrel_section (info)->reloc_count 5761 * sizeof (Elf32_External_Rel))); 5762 } 5763 5764 5765 if (elf_hash_table (info)->dynamic_sections_created) 5766 { 5767 Elf32_External_Dyn * dyncon; 5768 Elf32_External_Dyn * dynconend; 5769 5770 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 5771 5772 BFD_ASSERT (sdyn != NULL); 5773 5774 dyncon = (Elf32_External_Dyn *) sdyn->contents; 5775 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); 5776 5777 for (; dyncon < dynconend; dyncon++) 5778 { 5779 Elf_Internal_Dyn dyn; 5780 5781 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 5782 5783 switch (dyn.d_tag) 5784 { 5785 default: 5786 break; 5787 5788 case DT_PLTGOT: 5789 dyn.d_un.d_ptr = frvfdpic_got_section (info)->output_section->vma 5790 + frvfdpic_got_section (info)->output_offset 5791 + frvfdpic_got_initial_offset (info); 5792 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 5793 break; 5794 5795 case DT_JMPREL: 5796 dyn.d_un.d_ptr = frvfdpic_pltrel_section (info) 5797 ->output_section->vma 5798 + frvfdpic_pltrel_section (info)->output_offset; 5799 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 5800 break; 5801 5802 case DT_PLTRELSZ: 5803 dyn.d_un.d_val = frvfdpic_pltrel_section (info)->size; 5804 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 5805 break; 5806 } 5807 } 5808 } 5809 5810 return TRUE; 5811} 5812 5813/* Adjust a symbol defined by a dynamic object and referenced by a 5814 regular object. */ 5815 5816static bfd_boolean 5817elf32_frvfdpic_adjust_dynamic_symbol 5818(struct bfd_link_info *info ATTRIBUTE_UNUSED, 5819 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) 5820{ 5821 bfd * dynobj; 5822 5823 dynobj = elf_hash_table (info)->dynobj; 5824 5825 /* Make sure we know what is going on here. */ 5826 BFD_ASSERT (dynobj != NULL 5827 && (h->u.weakdef != NULL 5828 || (h->def_dynamic 5829 && h->ref_regular 5830 && !h->def_regular))); 5831 5832 /* If this is a weak symbol, and there is a real definition, the 5833 processor independent code will have arranged for us to see the 5834 real definition first, and we can just use the same value. */ 5835 if (h->u.weakdef != NULL) 5836 { 5837 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 5838 || h->u.weakdef->root.type == bfd_link_hash_defweak); 5839 h->root.u.def.section = h->u.weakdef->root.u.def.section; 5840 h->root.u.def.value = h->u.weakdef->root.u.def.value; 5841 } 5842 5843 return TRUE; 5844} 5845 5846/* Perform any actions needed for dynamic symbols. */ 5847 5848static bfd_boolean 5849elf32_frvfdpic_finish_dynamic_symbol 5850(bfd *output_bfd ATTRIBUTE_UNUSED, 5851 struct bfd_link_info *info ATTRIBUTE_UNUSED, 5852 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED, 5853 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) 5854{ 5855 return TRUE; 5856} 5857 5858/* Decide whether to attempt to turn absptr or lsda encodings in 5859 shared libraries into pcrel within the given input section. */ 5860 5861static bfd_boolean 5862frvfdpic_elf_use_relative_eh_frame 5863(bfd *input_bfd ATTRIBUTE_UNUSED, 5864 struct bfd_link_info *info ATTRIBUTE_UNUSED, 5865 asection *eh_frame_section ATTRIBUTE_UNUSED) 5866{ 5867 /* We can't use PC-relative encodings in FDPIC binaries, in general. */ 5868 return FALSE; 5869} 5870 5871/* Adjust the contents of an eh_frame_hdr section before they're output. */ 5872 5873static bfd_byte 5874frvfdpic_elf_encode_eh_address (bfd *abfd, 5875 struct bfd_link_info *info, 5876 asection *osec, bfd_vma offset, 5877 asection *loc_sec, bfd_vma loc_offset, 5878 bfd_vma *encoded) 5879{ 5880 struct elf_link_hash_entry *h; 5881 5882 h = elf_hash_table (info)->hgot; 5883 BFD_ASSERT (h && h->root.type == bfd_link_hash_defined); 5884 5885 if (! h || (_frvfdpic_osec_to_segment (abfd, osec) 5886 == _frvfdpic_osec_to_segment (abfd, loc_sec->output_section))) 5887 return _bfd_elf_encode_eh_address (abfd, info, osec, offset, 5888 loc_sec, loc_offset, encoded); 5889 5890 BFD_ASSERT (_frvfdpic_osec_to_segment (abfd, osec) 5891 == (_frvfdpic_osec_to_segment 5892 (abfd, h->root.u.def.section->output_section))); 5893 5894 *encoded = osec->vma + offset 5895 - (h->root.u.def.value 5896 + h->root.u.def.section->output_section->vma 5897 + h->root.u.def.section->output_offset); 5898 5899 return DW_EH_PE_datarel | DW_EH_PE_sdata4; 5900} 5901 5902/* Look through the relocs for a section during the first phase. 5903 5904 Besides handling virtual table relocs for gc, we have to deal with 5905 all sorts of PIC-related relocations. We describe below the 5906 general plan on how to handle such relocations, even though we only 5907 collect information at this point, storing them in hash tables for 5908 perusal of later passes. 5909 5910 32 relocations are propagated to the linker output when creating 5911 position-independent output. LO16 and HI16 relocations are not 5912 supposed to be encountered in this case. 5913 5914 LABEL16 should always be resolvable by the linker, since it's only 5915 used by branches. 5916 5917 LABEL24, on the other hand, is used by calls. If it turns out that 5918 the target of a call is a dynamic symbol, a PLT entry must be 5919 created for it, which triggers the creation of a private function 5920 descriptor and, unless lazy binding is disabled, a lazy PLT entry. 5921 5922 GPREL relocations require the referenced symbol to be in the same 5923 segment as _gp, but this can only be checked later. 5924 5925 All GOT, GOTOFF and FUNCDESC relocations require a .got section to 5926 exist. LABEL24 might as well, since it may require a PLT entry, 5927 that will require a got. 5928 5929 Non-FUNCDESC GOT relocations require a GOT entry to be created 5930 regardless of whether the symbol is dynamic. However, since a 5931 global symbol that turns out to not be exported may have the same 5932 address of a non-dynamic symbol, we don't assign GOT entries at 5933 this point, such that we can share them in this case. A relocation 5934 for the GOT entry always has to be created, be it to offset a 5935 private symbol by the section load address, be it to get the symbol 5936 resolved dynamically. 5937 5938 FUNCDESC GOT relocations require a GOT entry to be created, and 5939 handled as if a FUNCDESC relocation was applied to the GOT entry in 5940 an object file. 5941 5942 FUNCDESC relocations referencing a symbol that turns out to NOT be 5943 dynamic cause a private function descriptor to be created. The 5944 FUNCDESC relocation then decays to a 32 relocation that points at 5945 the private descriptor. If the symbol is dynamic, the FUNCDESC 5946 relocation is propagated to the linker output, such that the 5947 dynamic linker creates the canonical descriptor, pointing to the 5948 dynamically-resolved definition of the function. 5949 5950 Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic 5951 symbols that are assigned to the same segment as the GOT, but we 5952 can only check this later, after we know the complete set of 5953 symbols defined and/or exported. 5954 5955 FUNCDESC GOTOFF relocations require a function descriptor to be 5956 created and, unless lazy binding is disabled or the symbol is not 5957 dynamic, a lazy PLT entry. Since we can't tell at this point 5958 whether a symbol is going to be dynamic, we have to decide later 5959 whether to create a lazy PLT entry or bind the descriptor directly 5960 to the private function. 5961 5962 FUNCDESC_VALUE relocations are not supposed to be present in object 5963 files, but they may very well be simply propagated to the linker 5964 output, since they have no side effect. 5965 5966 5967 A function descriptor always requires a FUNCDESC_VALUE relocation. 5968 Whether it's in .plt.rel or not depends on whether lazy binding is 5969 enabled and on whether the referenced symbol is dynamic. 5970 5971 The existence of a lazy PLT requires the resolverStub lazy PLT 5972 entry to be present. 5973 5974 5975 As for assignment of GOT, PLT and lazy PLT entries, and private 5976 descriptors, we might do them all sequentially, but we can do 5977 better than that. For example, we can place GOT entries and 5978 private function descriptors referenced using 12-bit operands 5979 closer to the PIC register value, such that these relocations don't 5980 overflow. Those that are only referenced with LO16 relocations 5981 could come next, but we may as well place PLT-required function 5982 descriptors in the 12-bit range to make them shorter. Symbols 5983 referenced with LO16/HI16 may come next, but we may place 5984 additional function descriptors in the 16-bit range if we can 5985 reliably tell that we've already placed entries that are ever 5986 referenced with only LO16. PLT entries are therefore generated as 5987 small as possible, while not introducing relocation overflows in 5988 GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be 5989 generated before or after PLT entries, but not intermingled with 5990 them, such that we can have more lazy PLT entries in range for a 5991 branch to the resolverStub. The resolverStub should be emitted at 5992 the most distant location from the first lazy PLT entry such that 5993 it's still in range for a branch, or closer, if there isn't a need 5994 for so many lazy PLT entries. Additional lazy PLT entries may be 5995 emitted after the resolverStub, as long as branches are still in 5996 range. If the branch goes out of range, longer lazy PLT entries 5997 are emitted. 5998 5999 We could further optimize PLT and lazy PLT entries by giving them 6000 priority in assignment to closer-to-gr17 locations depending on the 6001 number of occurrences of references to them (assuming a function 6002 that's called more often is more important for performance, so its 6003 PLT entry should be faster), or taking hints from the compiler. 6004 Given infinite time and money... :-) */ 6005 6006static bfd_boolean 6007elf32_frv_check_relocs (bfd *abfd, 6008 struct bfd_link_info *info, 6009 asection *sec, 6010 const Elf_Internal_Rela *relocs) 6011{ 6012 Elf_Internal_Shdr *symtab_hdr; 6013 struct elf_link_hash_entry **sym_hashes; 6014 const Elf_Internal_Rela *rel; 6015 const Elf_Internal_Rela *rel_end; 6016 bfd *dynobj; 6017 struct frvfdpic_relocs_info *picrel; 6018 6019 if (bfd_link_relocatable (info)) 6020 return TRUE; 6021 6022 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 6023 sym_hashes = elf_sym_hashes (abfd); 6024 6025 dynobj = elf_hash_table (info)->dynobj; 6026 rel_end = relocs + sec->reloc_count; 6027 for (rel = relocs; rel < rel_end; rel++) 6028 { 6029 struct elf_link_hash_entry *h; 6030 unsigned long r_symndx; 6031 6032 r_symndx = ELF32_R_SYM (rel->r_info); 6033 if (r_symndx < symtab_hdr->sh_info) 6034 h = NULL; 6035 else 6036 { 6037 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 6038 while (h->root.type == bfd_link_hash_indirect 6039 || h->root.type == bfd_link_hash_warning) 6040 h = (struct elf_link_hash_entry *) h->root.u.i.link; 6041 6042 /* PR15323, ref flags aren't set for references in the same 6043 object. */ 6044 h->root.non_ir_ref = 1; 6045 } 6046 6047 switch (ELF32_R_TYPE (rel->r_info)) 6048 { 6049 case R_FRV_GETTLSOFF: 6050 case R_FRV_TLSDESC_VALUE: 6051 case R_FRV_GOTTLSDESC12: 6052 case R_FRV_GOTTLSDESCHI: 6053 case R_FRV_GOTTLSDESCLO: 6054 case R_FRV_GOTTLSOFF12: 6055 case R_FRV_GOTTLSOFFHI: 6056 case R_FRV_GOTTLSOFFLO: 6057 case R_FRV_TLSOFF: 6058 case R_FRV_GOT12: 6059 case R_FRV_GOTHI: 6060 case R_FRV_GOTLO: 6061 case R_FRV_FUNCDESC_GOT12: 6062 case R_FRV_FUNCDESC_GOTHI: 6063 case R_FRV_FUNCDESC_GOTLO: 6064 case R_FRV_GOTOFF12: 6065 case R_FRV_GOTOFFHI: 6066 case R_FRV_GOTOFFLO: 6067 case R_FRV_FUNCDESC_GOTOFF12: 6068 case R_FRV_FUNCDESC_GOTOFFHI: 6069 case R_FRV_FUNCDESC_GOTOFFLO: 6070 case R_FRV_FUNCDESC: 6071 case R_FRV_FUNCDESC_VALUE: 6072 case R_FRV_TLSMOFF12: 6073 case R_FRV_TLSMOFFHI: 6074 case R_FRV_TLSMOFFLO: 6075 case R_FRV_TLSMOFF: 6076 if (! IS_FDPIC (abfd)) 6077 goto bad_reloc; 6078 /* Fall through. */ 6079 case R_FRV_GPREL12: 6080 case R_FRV_GPRELU12: 6081 case R_FRV_GPRELHI: 6082 case R_FRV_GPRELLO: 6083 case R_FRV_LABEL24: 6084 case R_FRV_32: 6085 if (! dynobj) 6086 { 6087 elf_hash_table (info)->dynobj = dynobj = abfd; 6088 if (! _frv_create_got_section (abfd, info)) 6089 return FALSE; 6090 } 6091 if (! IS_FDPIC (abfd)) 6092 { 6093 picrel = NULL; 6094 break; 6095 } 6096 if (h != NULL) 6097 { 6098 if (h->dynindx == -1) 6099 switch (ELF_ST_VISIBILITY (h->other)) 6100 { 6101 case STV_INTERNAL: 6102 case STV_HIDDEN: 6103 break; 6104 default: 6105 bfd_elf_link_record_dynamic_symbol (info, h); 6106 break; 6107 } 6108 picrel 6109 = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info (info), 6110 abfd, h, 6111 rel->r_addend, INSERT); 6112 } 6113 else 6114 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info 6115 (info), abfd, r_symndx, 6116 rel->r_addend, INSERT); 6117 if (! picrel) 6118 return FALSE; 6119 break; 6120 6121 default: 6122 picrel = NULL; 6123 break; 6124 } 6125 6126 switch (ELF32_R_TYPE (rel->r_info)) 6127 { 6128 case R_FRV_LABEL24: 6129 if (IS_FDPIC (abfd)) 6130 picrel->call = 1; 6131 break; 6132 6133 case R_FRV_FUNCDESC_VALUE: 6134 picrel->relocsfdv++; 6135 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) 6136 picrel->relocs32--; 6137 /* Fall through. */ 6138 6139 case R_FRV_32: 6140 if (! IS_FDPIC (abfd)) 6141 break; 6142 6143 picrel->sym = 1; 6144 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) 6145 picrel->relocs32++; 6146 break; 6147 6148 case R_FRV_GOT12: 6149 picrel->got12 = 1; 6150 break; 6151 6152 case R_FRV_GOTHI: 6153 case R_FRV_GOTLO: 6154 picrel->gothilo = 1; 6155 break; 6156 6157 case R_FRV_FUNCDESC_GOT12: 6158 picrel->fdgot12 = 1; 6159 break; 6160 6161 case R_FRV_FUNCDESC_GOTHI: 6162 case R_FRV_FUNCDESC_GOTLO: 6163 picrel->fdgothilo = 1; 6164 break; 6165 6166 case R_FRV_GOTOFF12: 6167 case R_FRV_GOTOFFHI: 6168 case R_FRV_GOTOFFLO: 6169 picrel->gotoff = 1; 6170 break; 6171 6172 case R_FRV_FUNCDESC_GOTOFF12: 6173 picrel->fdgoff12 = 1; 6174 break; 6175 6176 case R_FRV_FUNCDESC_GOTOFFHI: 6177 case R_FRV_FUNCDESC_GOTOFFLO: 6178 picrel->fdgoffhilo = 1; 6179 break; 6180 6181 case R_FRV_FUNCDESC: 6182 picrel->fd = 1; 6183 picrel->relocsfd++; 6184 break; 6185 6186 case R_FRV_GETTLSOFF: 6187 picrel->tlsplt = 1; 6188 break; 6189 6190 case R_FRV_TLSDESC_VALUE: 6191 picrel->relocstlsd++; 6192 goto bad_reloc; 6193 6194 case R_FRV_GOTTLSDESC12: 6195 picrel->tlsdesc12 = 1; 6196 break; 6197 6198 case R_FRV_GOTTLSDESCHI: 6199 case R_FRV_GOTTLSDESCLO: 6200 picrel->tlsdeschilo = 1; 6201 break; 6202 6203 case R_FRV_TLSMOFF12: 6204 case R_FRV_TLSMOFFHI: 6205 case R_FRV_TLSMOFFLO: 6206 case R_FRV_TLSMOFF: 6207 break; 6208 6209 case R_FRV_GOTTLSOFF12: 6210 picrel->tlsoff12 = 1; 6211 info->flags |= DF_STATIC_TLS; 6212 break; 6213 6214 case R_FRV_GOTTLSOFFHI: 6215 case R_FRV_GOTTLSOFFLO: 6216 picrel->tlsoffhilo = 1; 6217 info->flags |= DF_STATIC_TLS; 6218 break; 6219 6220 case R_FRV_TLSOFF: 6221 picrel->relocstlsoff++; 6222 info->flags |= DF_STATIC_TLS; 6223 goto bad_reloc; 6224 6225 /* This relocation describes the C++ object vtable hierarchy. 6226 Reconstruct it for later use during GC. */ 6227 case R_FRV_GNU_VTINHERIT: 6228 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 6229 return FALSE; 6230 break; 6231 6232 /* This relocation describes which C++ vtable entries are actually 6233 used. Record for later use during GC. */ 6234 case R_FRV_GNU_VTENTRY: 6235 BFD_ASSERT (h != NULL); 6236 if (h != NULL 6237 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 6238 return FALSE; 6239 break; 6240 6241 case R_FRV_LABEL16: 6242 case R_FRV_LO16: 6243 case R_FRV_HI16: 6244 case R_FRV_GPREL12: 6245 case R_FRV_GPRELU12: 6246 case R_FRV_GPREL32: 6247 case R_FRV_GPRELHI: 6248 case R_FRV_GPRELLO: 6249 case R_FRV_TLSDESC_RELAX: 6250 case R_FRV_GETTLSOFF_RELAX: 6251 case R_FRV_TLSOFF_RELAX: 6252 break; 6253 6254 default: 6255 bad_reloc: 6256 info->callbacks->einfo 6257 /* xgettext:c-format */ 6258 (_("%B: unsupported relocation type %i\n"), 6259 abfd, ELF32_R_TYPE (rel->r_info)); 6260 return FALSE; 6261 } 6262 } 6263 6264 return TRUE; 6265} 6266 6267 6268/* Return the machine subcode from the ELF e_flags header. */ 6269 6270static int 6271elf32_frv_machine (bfd *abfd) 6272{ 6273 switch (elf_elfheader (abfd)->e_flags & EF_FRV_CPU_MASK) 6274 { 6275 default: break; 6276 case EF_FRV_CPU_FR550: return bfd_mach_fr550; 6277 case EF_FRV_CPU_FR500: return bfd_mach_fr500; 6278 case EF_FRV_CPU_FR450: return bfd_mach_fr450; 6279 case EF_FRV_CPU_FR405: return bfd_mach_fr400; 6280 case EF_FRV_CPU_FR400: return bfd_mach_fr400; 6281 case EF_FRV_CPU_FR300: return bfd_mach_fr300; 6282 case EF_FRV_CPU_SIMPLE: return bfd_mach_frvsimple; 6283 case EF_FRV_CPU_TOMCAT: return bfd_mach_frvtomcat; 6284 } 6285 6286 return bfd_mach_frv; 6287} 6288 6289/* Set the right machine number for a FRV ELF file. */ 6290 6291static bfd_boolean 6292elf32_frv_object_p (bfd *abfd) 6293{ 6294 bfd_default_set_arch_mach (abfd, bfd_arch_frv, elf32_frv_machine (abfd)); 6295 return (((elf_elfheader (abfd)->e_flags & EF_FRV_FDPIC) != 0) 6296 == (IS_FDPIC (abfd))); 6297} 6298 6299/* Function to set the ELF flag bits. */ 6300 6301static bfd_boolean 6302frv_elf_set_private_flags (bfd *abfd, flagword flags) 6303{ 6304 elf_elfheader (abfd)->e_flags = flags; 6305 elf_flags_init (abfd) = TRUE; 6306 return TRUE; 6307} 6308 6309/* Return true if the architecture described by elf header flag 6310 EXTENSION is an extension of the architecture described by BASE. */ 6311 6312static bfd_boolean 6313frv_elf_arch_extension_p (flagword base, flagword extension) 6314{ 6315 if (base == extension) 6316 return TRUE; 6317 6318 /* CPU_GENERIC code can be merged with code for a specific 6319 architecture, in which case the result is marked as being 6320 for the specific architecture. Everything is therefore 6321 an extension of CPU_GENERIC. */ 6322 if (base == EF_FRV_CPU_GENERIC) 6323 return TRUE; 6324 6325 if (extension == EF_FRV_CPU_FR450) 6326 if (base == EF_FRV_CPU_FR400 || base == EF_FRV_CPU_FR405) 6327 return TRUE; 6328 6329 if (extension == EF_FRV_CPU_FR405) 6330 if (base == EF_FRV_CPU_FR400) 6331 return TRUE; 6332 6333 return FALSE; 6334} 6335 6336/* Merge backend specific data from an object file to the output 6337 object file when linking. */ 6338 6339static bfd_boolean 6340frv_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) 6341{ 6342 bfd *obfd = info->output_bfd; 6343 flagword old_flags, old_partial; 6344 flagword new_flags, new_partial; 6345 bfd_boolean error = FALSE; 6346 char new_opt[80]; 6347 char old_opt[80]; 6348 6349 new_opt[0] = old_opt[0] = '\0'; 6350 new_flags = elf_elfheader (ibfd)->e_flags; 6351 old_flags = elf_elfheader (obfd)->e_flags; 6352 6353 if (new_flags & EF_FRV_FDPIC) 6354 new_flags &= ~EF_FRV_PIC; 6355 6356#ifdef DEBUG 6357 _bfd_error_handler 6358 ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s", 6359 old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no", 6360 bfd_get_filename (ibfd)); 6361#endif 6362 6363 if (!elf_flags_init (obfd)) /* First call, no flags set. */ 6364 { 6365 elf_flags_init (obfd) = TRUE; 6366 old_flags = new_flags; 6367 } 6368 6369 else if (new_flags == old_flags) /* Compatible flags are ok. */ 6370 ; 6371 6372 else /* Possibly incompatible flags. */ 6373 { 6374 /* Warn if different # of gprs are used. Note, 0 means nothing is 6375 said about the size of gprs. */ 6376 new_partial = (new_flags & EF_FRV_GPR_MASK); 6377 old_partial = (old_flags & EF_FRV_GPR_MASK); 6378 if (new_partial == old_partial) 6379 ; 6380 6381 else if (new_partial == 0) 6382 ; 6383 6384 else if (old_partial == 0) 6385 old_flags |= new_partial; 6386 6387 else 6388 { 6389 switch (new_partial) 6390 { 6391 default: strcat (new_opt, " -mgpr-??"); break; 6392 case EF_FRV_GPR_32: strcat (new_opt, " -mgpr-32"); break; 6393 case EF_FRV_GPR_64: strcat (new_opt, " -mgpr-64"); break; 6394 } 6395 6396 switch (old_partial) 6397 { 6398 default: strcat (old_opt, " -mgpr-??"); break; 6399 case EF_FRV_GPR_32: strcat (old_opt, " -mgpr-32"); break; 6400 case EF_FRV_GPR_64: strcat (old_opt, " -mgpr-64"); break; 6401 } 6402 } 6403 6404 /* Warn if different # of fprs are used. Note, 0 means nothing is 6405 said about the size of fprs. */ 6406 new_partial = (new_flags & EF_FRV_FPR_MASK); 6407 old_partial = (old_flags & EF_FRV_FPR_MASK); 6408 if (new_partial == old_partial) 6409 ; 6410 6411 else if (new_partial == 0) 6412 ; 6413 6414 else if (old_partial == 0) 6415 old_flags |= new_partial; 6416 6417 else 6418 { 6419 switch (new_partial) 6420 { 6421 default: strcat (new_opt, " -mfpr-?"); break; 6422 case EF_FRV_FPR_32: strcat (new_opt, " -mfpr-32"); break; 6423 case EF_FRV_FPR_64: strcat (new_opt, " -mfpr-64"); break; 6424 case EF_FRV_FPR_NONE: strcat (new_opt, " -msoft-float"); break; 6425 } 6426 6427 switch (old_partial) 6428 { 6429 default: strcat (old_opt, " -mfpr-?"); break; 6430 case EF_FRV_FPR_32: strcat (old_opt, " -mfpr-32"); break; 6431 case EF_FRV_FPR_64: strcat (old_opt, " -mfpr-64"); break; 6432 case EF_FRV_FPR_NONE: strcat (old_opt, " -msoft-float"); break; 6433 } 6434 } 6435 6436 /* Warn if different dword support was used. Note, 0 means nothing is 6437 said about the dword support. */ 6438 new_partial = (new_flags & EF_FRV_DWORD_MASK); 6439 old_partial = (old_flags & EF_FRV_DWORD_MASK); 6440 if (new_partial == old_partial) 6441 ; 6442 6443 else if (new_partial == 0) 6444 ; 6445 6446 else if (old_partial == 0) 6447 old_flags |= new_partial; 6448 6449 else 6450 { 6451 switch (new_partial) 6452 { 6453 default: strcat (new_opt, " -mdword-?"); break; 6454 case EF_FRV_DWORD_YES: strcat (new_opt, " -mdword"); break; 6455 case EF_FRV_DWORD_NO: strcat (new_opt, " -mno-dword"); break; 6456 } 6457 6458 switch (old_partial) 6459 { 6460 default: strcat (old_opt, " -mdword-?"); break; 6461 case EF_FRV_DWORD_YES: strcat (old_opt, " -mdword"); break; 6462 case EF_FRV_DWORD_NO: strcat (old_opt, " -mno-dword"); break; 6463 } 6464 } 6465 6466 /* Or in flags that accumulate (ie, if one module uses it, mark that the 6467 feature is used. */ 6468 old_flags |= new_flags & (EF_FRV_DOUBLE 6469 | EF_FRV_MEDIA 6470 | EF_FRV_MULADD 6471 | EF_FRV_NON_PIC_RELOCS); 6472 6473 /* If any module was compiled without -G0, clear the G0 bit. */ 6474 old_flags = ((old_flags & ~ EF_FRV_G0) 6475 | (old_flags & new_flags & EF_FRV_G0)); 6476 6477 /* If any module was compiled without -mnopack, clear the mnopack bit. */ 6478 old_flags = ((old_flags & ~ EF_FRV_NOPACK) 6479 | (old_flags & new_flags & EF_FRV_NOPACK)); 6480 6481 /* We don't have to do anything if the pic flags are the same, or the new 6482 module(s) were compiled with -mlibrary-pic. */ 6483 new_partial = (new_flags & EF_FRV_PIC_FLAGS); 6484 old_partial = (old_flags & EF_FRV_PIC_FLAGS); 6485 if ((new_partial == old_partial) || ((new_partial & EF_FRV_LIBPIC) != 0)) 6486 ; 6487 6488 /* If the old module(s) were compiled with -mlibrary-pic, copy in the pic 6489 flags if any from the new module. */ 6490 else if ((old_partial & EF_FRV_LIBPIC) != 0) 6491 old_flags = (old_flags & ~ EF_FRV_PIC_FLAGS) | new_partial; 6492 6493 /* If we have mixtures of -fpic and -fPIC, or in both bits. */ 6494 else if (new_partial != 0 && old_partial != 0) 6495 old_flags |= new_partial; 6496 6497 /* One module was compiled for pic and the other was not, see if we have 6498 had any relocations that are not pic-safe. */ 6499 else 6500 { 6501 if ((old_flags & EF_FRV_NON_PIC_RELOCS) == 0) 6502 old_flags |= new_partial; 6503 else 6504 { 6505 old_flags &= ~ EF_FRV_PIC_FLAGS; 6506#ifndef FRV_NO_PIC_ERROR 6507 error = TRUE; 6508 _bfd_error_handler 6509 /* xgettext:c-format */ 6510 (_("%s: compiled with %s and linked with modules that use non-pic relocations"), 6511 bfd_get_filename (ibfd), 6512 (new_flags & EF_FRV_BIGPIC) ? "-fPIC" : "-fpic"); 6513#endif 6514 } 6515 } 6516 6517 /* Warn if different cpu is used (allow a specific cpu to override 6518 the generic cpu). */ 6519 new_partial = (new_flags & EF_FRV_CPU_MASK); 6520 old_partial = (old_flags & EF_FRV_CPU_MASK); 6521 if (frv_elf_arch_extension_p (new_partial, old_partial)) 6522 ; 6523 6524 else if (frv_elf_arch_extension_p (old_partial, new_partial)) 6525 old_flags = (old_flags & ~EF_FRV_CPU_MASK) | new_partial; 6526 6527 else 6528 { 6529 switch (new_partial) 6530 { 6531 default: strcat (new_opt, " -mcpu=?"); break; 6532 case EF_FRV_CPU_GENERIC: strcat (new_opt, " -mcpu=frv"); break; 6533 case EF_FRV_CPU_SIMPLE: strcat (new_opt, " -mcpu=simple"); break; 6534 case EF_FRV_CPU_FR550: strcat (new_opt, " -mcpu=fr550"); break; 6535 case EF_FRV_CPU_FR500: strcat (new_opt, " -mcpu=fr500"); break; 6536 case EF_FRV_CPU_FR450: strcat (new_opt, " -mcpu=fr450"); break; 6537 case EF_FRV_CPU_FR405: strcat (new_opt, " -mcpu=fr405"); break; 6538 case EF_FRV_CPU_FR400: strcat (new_opt, " -mcpu=fr400"); break; 6539 case EF_FRV_CPU_FR300: strcat (new_opt, " -mcpu=fr300"); break; 6540 case EF_FRV_CPU_TOMCAT: strcat (new_opt, " -mcpu=tomcat"); break; 6541 } 6542 6543 switch (old_partial) 6544 { 6545 default: strcat (old_opt, " -mcpu=?"); break; 6546 case EF_FRV_CPU_GENERIC: strcat (old_opt, " -mcpu=frv"); break; 6547 case EF_FRV_CPU_SIMPLE: strcat (old_opt, " -mcpu=simple"); break; 6548 case EF_FRV_CPU_FR550: strcat (old_opt, " -mcpu=fr550"); break; 6549 case EF_FRV_CPU_FR500: strcat (old_opt, " -mcpu=fr500"); break; 6550 case EF_FRV_CPU_FR450: strcat (old_opt, " -mcpu=fr450"); break; 6551 case EF_FRV_CPU_FR405: strcat (old_opt, " -mcpu=fr405"); break; 6552 case EF_FRV_CPU_FR400: strcat (old_opt, " -mcpu=fr400"); break; 6553 case EF_FRV_CPU_FR300: strcat (old_opt, " -mcpu=fr300"); break; 6554 case EF_FRV_CPU_TOMCAT: strcat (old_opt, " -mcpu=tomcat"); break; 6555 } 6556 } 6557 6558 /* Print out any mismatches from above. */ 6559 if (new_opt[0]) 6560 { 6561 error = TRUE; 6562 _bfd_error_handler 6563 /* xgettext:c-format */ 6564 (_("%s: compiled with %s and linked with modules compiled with %s"), 6565 bfd_get_filename (ibfd), new_opt, old_opt); 6566 } 6567 6568 /* Warn about any other mismatches */ 6569 new_partial = (new_flags & ~ EF_FRV_ALL_FLAGS); 6570 old_partial = (old_flags & ~ EF_FRV_ALL_FLAGS); 6571 if (new_partial != old_partial) 6572 { 6573 old_flags |= new_partial; 6574 error = TRUE; 6575 _bfd_error_handler 6576 /* xgettext:c-format */ 6577 (_("%s: uses different unknown e_flags (0x%lx) fields than previous modules (0x%lx)"), 6578 bfd_get_filename (ibfd), (long)new_partial, (long)old_partial); 6579 } 6580 } 6581 6582 /* If the cpu is -mcpu=simple, then set the -mnopack bit. */ 6583 if ((old_flags & EF_FRV_CPU_MASK) == EF_FRV_CPU_SIMPLE) 6584 old_flags |= EF_FRV_NOPACK; 6585 6586 /* Update the old flags now with changes made above. */ 6587 old_partial = elf_elfheader (obfd)->e_flags & EF_FRV_CPU_MASK; 6588 elf_elfheader (obfd)->e_flags = old_flags; 6589 if (old_partial != (old_flags & EF_FRV_CPU_MASK)) 6590 bfd_default_set_arch_mach (obfd, bfd_arch_frv, elf32_frv_machine (obfd)); 6591 6592 if (((new_flags & EF_FRV_FDPIC) == 0) 6593 != (! IS_FDPIC (ibfd))) 6594 { 6595 error = TRUE; 6596 if (IS_FDPIC (obfd)) 6597 _bfd_error_handler 6598 (_("%s: cannot link non-fdpic object file into fdpic executable"), 6599 bfd_get_filename (ibfd)); 6600 else 6601 _bfd_error_handler 6602 (_("%s: cannot link fdpic object file into non-fdpic executable"), 6603 bfd_get_filename (ibfd)); 6604 } 6605 6606 if (error) 6607 bfd_set_error (bfd_error_bad_value); 6608 6609 return !error; 6610} 6611 6612 6613static bfd_boolean 6614frv_elf_print_private_bfd_data (bfd *abfd, void * ptr) 6615{ 6616 FILE *file = (FILE *) ptr; 6617 flagword flags; 6618 6619 BFD_ASSERT (abfd != NULL && ptr != NULL); 6620 6621 /* Print normal ELF private data. */ 6622 _bfd_elf_print_private_bfd_data (abfd, ptr); 6623 6624 flags = elf_elfheader (abfd)->e_flags; 6625 fprintf (file, _("private flags = 0x%lx:"), (unsigned long) flags); 6626 6627 switch (flags & EF_FRV_CPU_MASK) 6628 { 6629 default: break; 6630 case EF_FRV_CPU_SIMPLE: fprintf (file, " -mcpu=simple"); break; 6631 case EF_FRV_CPU_FR550: fprintf (file, " -mcpu=fr550"); break; 6632 case EF_FRV_CPU_FR500: fprintf (file, " -mcpu=fr500"); break; 6633 case EF_FRV_CPU_FR450: fprintf (file, " -mcpu=fr450"); break; 6634 case EF_FRV_CPU_FR405: fprintf (file, " -mcpu=fr405"); break; 6635 case EF_FRV_CPU_FR400: fprintf (file, " -mcpu=fr400"); break; 6636 case EF_FRV_CPU_FR300: fprintf (file, " -mcpu=fr300"); break; 6637 case EF_FRV_CPU_TOMCAT: fprintf (file, " -mcpu=tomcat"); break; 6638 } 6639 6640 switch (flags & EF_FRV_GPR_MASK) 6641 { 6642 default: break; 6643 case EF_FRV_GPR_32: fprintf (file, " -mgpr-32"); break; 6644 case EF_FRV_GPR_64: fprintf (file, " -mgpr-64"); break; 6645 } 6646 6647 switch (flags & EF_FRV_FPR_MASK) 6648 { 6649 default: break; 6650 case EF_FRV_FPR_32: fprintf (file, " -mfpr-32"); break; 6651 case EF_FRV_FPR_64: fprintf (file, " -mfpr-64"); break; 6652 case EF_FRV_FPR_NONE: fprintf (file, " -msoft-float"); break; 6653 } 6654 6655 switch (flags & EF_FRV_DWORD_MASK) 6656 { 6657 default: break; 6658 case EF_FRV_DWORD_YES: fprintf (file, " -mdword"); break; 6659 case EF_FRV_DWORD_NO: fprintf (file, " -mno-dword"); break; 6660 } 6661 6662 if (flags & EF_FRV_DOUBLE) 6663 fprintf (file, " -mdouble"); 6664 6665 if (flags & EF_FRV_MEDIA) 6666 fprintf (file, " -mmedia"); 6667 6668 if (flags & EF_FRV_MULADD) 6669 fprintf (file, " -mmuladd"); 6670 6671 if (flags & EF_FRV_PIC) 6672 fprintf (file, " -fpic"); 6673 6674 if (flags & EF_FRV_BIGPIC) 6675 fprintf (file, " -fPIC"); 6676 6677 if (flags & EF_FRV_LIBPIC) 6678 fprintf (file, " -mlibrary-pic"); 6679 6680 if (flags & EF_FRV_FDPIC) 6681 fprintf (file, " -mfdpic"); 6682 6683 if (flags & EF_FRV_NON_PIC_RELOCS) 6684 fprintf (file, " non-pic relocations"); 6685 6686 if (flags & EF_FRV_G0) 6687 fprintf (file, " -G0"); 6688 6689 fputc ('\n', file); 6690 return TRUE; 6691} 6692 6693 6694/* Support for core dump NOTE sections. */ 6695 6696static bfd_boolean 6697elf32_frv_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 6698{ 6699 int offset; 6700 unsigned int raw_size; 6701 6702 switch (note->descsz) 6703 { 6704 default: 6705 return FALSE; 6706 6707 /* The Linux/FRV elf_prstatus struct is 268 bytes long. The other 6708 hardcoded offsets and sizes listed below (and contained within 6709 this lexical block) refer to fields in the target's elf_prstatus 6710 struct. */ 6711 case 268: 6712 /* `pr_cursig' is at offset 12. */ 6713 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); 6714 6715 /* `pr_pid' is at offset 24. */ 6716 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); 6717 6718 /* `pr_reg' is at offset 72. */ 6719 offset = 72; 6720 6721 /* Most grok_prstatus implementations set `raw_size' to the size 6722 of the pr_reg field. For Linux/FRV, we set `raw_size' to be 6723 the size of `pr_reg' plus the size of `pr_exec_fdpic_loadmap' 6724 and `pr_interp_fdpic_loadmap', both of which (by design) 6725 immediately follow `pr_reg'. This will allow these fields to 6726 be viewed by GDB as registers. 6727 6728 `pr_reg' is 184 bytes long. `pr_exec_fdpic_loadmap' and 6729 `pr_interp_fdpic_loadmap' are 4 bytes each. */ 6730 raw_size = 184 + 4 + 4; 6731 6732 break; 6733 } 6734 6735 /* Make a ".reg/999" section. */ 6736 return _bfd_elfcore_make_pseudosection (abfd, ".reg", raw_size, 6737 note->descpos + offset); 6738} 6739 6740static bfd_boolean 6741elf32_frv_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 6742{ 6743 switch (note->descsz) 6744 { 6745 default: 6746 return FALSE; 6747 6748 /* The Linux/FRV elf_prpsinfo struct is 124 bytes long. */ 6749 case 124: 6750 6751 /* `pr_fname' is found at offset 28 and is 16 bytes long. */ 6752 elf_tdata (abfd)->core->program 6753 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); 6754 6755 /* `pr_psargs' is found at offset 44 and is 80 bytes long. */ 6756 elf_tdata (abfd)->core->command 6757 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); 6758 } 6759 6760 /* Note that for some reason, a spurious space is tacked 6761 onto the end of the args in some (at least one anyway) 6762 implementations, so strip it off if it exists. */ 6763 6764 { 6765 char *command = elf_tdata (abfd)->core->command; 6766 int n = strlen (command); 6767 6768 if (0 < n && command[n - 1] == ' ') 6769 command[n - 1] = '\0'; 6770 } 6771 6772 return TRUE; 6773} 6774#define ELF_ARCH bfd_arch_frv 6775#define ELF_TARGET_ID FRV_ELF_DATA 6776#define ELF_MACHINE_CODE EM_CYGNUS_FRV 6777#define ELF_MAXPAGESIZE 0x1000 6778 6779#define TARGET_BIG_SYM frv_elf32_vec 6780#define TARGET_BIG_NAME "elf32-frv" 6781 6782#define elf_info_to_howto frv_info_to_howto_rela 6783#define elf_backend_relocate_section elf32_frv_relocate_section 6784#define elf_backend_gc_mark_hook elf32_frv_gc_mark_hook 6785#define elf_backend_check_relocs elf32_frv_check_relocs 6786#define elf_backend_object_p elf32_frv_object_p 6787#define elf_backend_add_symbol_hook elf32_frv_add_symbol_hook 6788 6789#define elf_backend_stack_align 8 6790#define elf_backend_can_gc_sections 1 6791#define elf_backend_rela_normal 1 6792 6793#define bfd_elf32_bfd_reloc_type_lookup frv_reloc_type_lookup 6794#define bfd_elf32_bfd_reloc_name_lookup frv_reloc_name_lookup 6795#define bfd_elf32_bfd_set_private_flags frv_elf_set_private_flags 6796#define bfd_elf32_bfd_merge_private_bfd_data frv_elf_merge_private_bfd_data 6797#define bfd_elf32_bfd_print_private_bfd_data frv_elf_print_private_bfd_data 6798 6799#define elf_backend_want_got_sym 1 6800#define elf_backend_got_header_size 0 6801#define elf_backend_want_got_plt 0 6802#define elf_backend_plt_readonly 1 6803#define elf_backend_want_plt_sym 0 6804#define elf_backend_plt_header_size 0 6805 6806#define elf_backend_finish_dynamic_sections \ 6807 elf32_frv_finish_dynamic_sections 6808 6809#define elf_backend_grok_prstatus elf32_frv_grok_prstatus 6810#define elf_backend_grok_psinfo elf32_frv_grok_psinfo 6811 6812#include "elf32-target.h" 6813 6814#undef ELF_MAXPAGESIZE 6815#define ELF_MAXPAGESIZE 0x4000 6816 6817#undef TARGET_BIG_SYM 6818#define TARGET_BIG_SYM frv_elf32_fdpic_vec 6819#undef TARGET_BIG_NAME 6820#define TARGET_BIG_NAME "elf32-frvfdpic" 6821#undef elf32_bed 6822#define elf32_bed elf32_frvfdpic_bed 6823 6824#undef elf_info_to_howto_rel 6825#define elf_info_to_howto_rel frvfdpic_info_to_howto_rel 6826 6827#undef bfd_elf32_bfd_link_hash_table_create 6828#define bfd_elf32_bfd_link_hash_table_create \ 6829 frvfdpic_elf_link_hash_table_create 6830#undef elf_backend_always_size_sections 6831#define elf_backend_always_size_sections \ 6832 elf32_frvfdpic_always_size_sections 6833 6834#undef elf_backend_create_dynamic_sections 6835#define elf_backend_create_dynamic_sections \ 6836 elf32_frvfdpic_create_dynamic_sections 6837#undef elf_backend_adjust_dynamic_symbol 6838#define elf_backend_adjust_dynamic_symbol \ 6839 elf32_frvfdpic_adjust_dynamic_symbol 6840#undef elf_backend_size_dynamic_sections 6841#define elf_backend_size_dynamic_sections \ 6842 elf32_frvfdpic_size_dynamic_sections 6843#undef bfd_elf32_bfd_relax_section 6844#define bfd_elf32_bfd_relax_section \ 6845 elf32_frvfdpic_relax_section 6846#undef elf_backend_finish_dynamic_symbol 6847#define elf_backend_finish_dynamic_symbol \ 6848 elf32_frvfdpic_finish_dynamic_symbol 6849#undef elf_backend_finish_dynamic_sections 6850#define elf_backend_finish_dynamic_sections \ 6851 elf32_frvfdpic_finish_dynamic_sections 6852 6853#undef elf_backend_discard_info 6854#define elf_backend_discard_info \ 6855 frvfdpic_elf_discard_info 6856#undef elf_backend_can_make_relative_eh_frame 6857#define elf_backend_can_make_relative_eh_frame \ 6858 frvfdpic_elf_use_relative_eh_frame 6859#undef elf_backend_can_make_lsda_relative_eh_frame 6860#define elf_backend_can_make_lsda_relative_eh_frame \ 6861 frvfdpic_elf_use_relative_eh_frame 6862#undef elf_backend_encode_eh_address 6863#define elf_backend_encode_eh_address \ 6864 frvfdpic_elf_encode_eh_address 6865 6866#undef elf_backend_may_use_rel_p 6867#define elf_backend_may_use_rel_p 1 6868#undef elf_backend_may_use_rela_p 6869#define elf_backend_may_use_rela_p 1 6870/* We use REL for dynamic relocations only. */ 6871#undef elf_backend_default_use_rela_p 6872#define elf_backend_default_use_rela_p 1 6873 6874#undef elf_backend_omit_section_dynsym 6875#define elf_backend_omit_section_dynsym _frvfdpic_link_omit_section_dynsym 6876 6877#include "elf32-target.h" 6878