1 /* FRV-specific support for 32-bit ELF. 2 Copyright (C) 2002-2015 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 32 static reloc_howto_type elf32_frv_howto_table [] = 33 { 34 /* This reloc does nothing. */ 35 HOWTO (R_FRV_NONE, /* type */ 36 0, /* rightshift */ 37 2, /* size (0 = byte, 1 = short, 2 = long) */ 38 32, /* bitsize */ 39 FALSE, /* pc_relative */ 40 0, /* bitpos */ 41 complain_overflow_bitfield, /* complain_on_overflow */ 42 bfd_elf_generic_reloc, /* special_function */ 43 "R_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. */ 676 static 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. */ 692 static 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. */ 709 static 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 */ 723 724 static 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 */ 738 739 static 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 */ 753 754 static 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 */ 779 780 static 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 */ 796 797 798 799 extern 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. */ 804 struct frvfdpic_elf_link_hash_table 805 { 806 struct elf_link_hash_table elf; 807 808 /* A pointer to the .got section. */ 809 asection *sgot; 810 /* A pointer to the .rel.got section. */ 811 asection *sgotrel; 812 /* A pointer to the .rofixup section. */ 813 asection *sgotfixup; 814 /* A pointer to the .plt section. */ 815 asection *splt; 816 /* A pointer to the .rel.plt section. */ 817 asection *spltrel; 818 /* GOT base offset. */ 819 bfd_vma got0; 820 /* Location of the first non-lazy PLT entry, i.e., the number of 821 bytes taken by lazy PLT entries. If locally-bound TLS 822 descriptors require a ret instruction, it will be placed at this 823 offset. */ 824 bfd_vma plt0; 825 /* A hash table holding information about which symbols were 826 referenced with which PIC-related relocations. */ 827 struct htab *relocs_info; 828 /* Summary reloc information collected by 829 _frvfdpic_count_got_plt_entries. */ 830 struct _frvfdpic_dynamic_got_info *g; 831 }; 832 833 /* Get the FRV ELF linker hash table from a link_info structure. */ 834 835 #define frvfdpic_hash_table(p) \ 836 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 837 == FRV_ELF_DATA ? ((struct frvfdpic_elf_link_hash_table *) ((p)->hash)) : NULL) 838 839 #define frvfdpic_got_section(info) \ 840 (frvfdpic_hash_table (info)->sgot) 841 #define frvfdpic_gotrel_section(info) \ 842 (frvfdpic_hash_table (info)->sgotrel) 843 #define frvfdpic_gotfixup_section(info) \ 844 (frvfdpic_hash_table (info)->sgotfixup) 845 #define frvfdpic_plt_section(info) \ 846 (frvfdpic_hash_table (info)->splt) 847 #define frvfdpic_pltrel_section(info) \ 848 (frvfdpic_hash_table (info)->spltrel) 849 #define frvfdpic_relocs_info(info) \ 850 (frvfdpic_hash_table (info)->relocs_info) 851 #define frvfdpic_got_initial_offset(info) \ 852 (frvfdpic_hash_table (info)->got0) 853 #define frvfdpic_plt_initial_offset(info) \ 854 (frvfdpic_hash_table (info)->plt0) 855 #define frvfdpic_dynamic_got_plt_info(info) \ 856 (frvfdpic_hash_table (info)->g) 857 858 /* Currently it's the same, but if some day we have a reason to change 859 it, we'd better be using a different macro. 860 861 FIXME: if there's any TLS PLT entry that uses local-exec or 862 initial-exec models, we could use the ret at the end of any of them 863 instead of adding one more. */ 864 #define frvfdpic_plt_tls_ret_offset(info) \ 865 (frvfdpic_plt_initial_offset (info)) 866 867 /* The name of the dynamic interpreter. This is put in the .interp 868 section. */ 869 870 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" 871 872 #define DEFAULT_STACK_SIZE 0x20000 873 874 /* This structure is used to collect the number of entries present in 875 each addressable range of the got. */ 876 struct _frvfdpic_dynamic_got_info 877 { 878 /* Several bits of information about the current link. */ 879 struct bfd_link_info *info; 880 /* Total GOT size needed for GOT entries within the 12-, 16- or 32-bit 881 ranges. */ 882 bfd_vma got12, gotlos, gothilo; 883 /* Total GOT size needed for function descriptor entries within the 12-, 884 16- or 32-bit ranges. */ 885 bfd_vma fd12, fdlos, fdhilo; 886 /* Total GOT size needed by function descriptor entries referenced 887 in PLT entries, that would be profitable to place in offsets 888 close to the PIC register. */ 889 bfd_vma fdplt; 890 /* Total PLT size needed by lazy PLT entries. */ 891 bfd_vma lzplt; 892 /* Total GOT size needed for TLS descriptor entries within the 12-, 893 16- or 32-bit ranges. */ 894 bfd_vma tlsd12, tlsdlos, tlsdhilo; 895 /* Total GOT size needed by TLS descriptors referenced in PLT 896 entries, that would be profitable to place in offers close to the 897 PIC register. */ 898 bfd_vma tlsdplt; 899 /* Total PLT size needed by TLS lazy PLT entries. */ 900 bfd_vma tlslzplt; 901 /* Number of relocations carried over from input object files. */ 902 unsigned long relocs; 903 /* Number of fixups introduced by relocations in input object files. */ 904 unsigned long fixups; 905 /* The number of fixups that reference the ret instruction added to 906 the PLT for locally-resolved TLS descriptors. */ 907 unsigned long tls_ret_refs; 908 }; 909 910 /* This structure is used to assign offsets to got entries, function 911 descriptors, plt entries and lazy plt entries. */ 912 913 struct _frvfdpic_dynamic_got_plt_info 914 { 915 /* Summary information collected with _frvfdpic_count_got_plt_entries. */ 916 struct _frvfdpic_dynamic_got_info g; 917 918 /* For each addressable range, we record a MAX (positive) and MIN 919 (negative) value. CUR is used to assign got entries, and it's 920 incremented from an initial positive value to MAX, then from MIN 921 to FDCUR (unless FDCUR wraps around first). FDCUR is used to 922 assign function descriptors, and it's decreased from an initial 923 non-positive value to MIN, then from MAX down to CUR (unless CUR 924 wraps around first). All of MIN, MAX, CUR and FDCUR always point 925 to even words. ODD, if non-zero, indicates an odd word to be 926 used for the next got entry, otherwise CUR is used and 927 incremented by a pair of words, wrapping around when it reaches 928 MAX. FDCUR is decremented (and wrapped) before the next function 929 descriptor is chosen. FDPLT indicates the number of remaining 930 slots that can be used for function descriptors used only by PLT 931 entries. 932 933 TMAX, TMIN and TCUR are used to assign TLS descriptors. TCUR 934 starts as MAX, and grows up to TMAX, then wraps around to TMIN 935 and grows up to MIN. TLSDPLT indicates the number of remaining 936 slots that can be used for TLS descriptors used only by TLS PLT 937 entries. */ 938 struct _frvfdpic_dynamic_got_alloc_data 939 { 940 bfd_signed_vma max, cur, odd, fdcur, min; 941 bfd_signed_vma tmax, tcur, tmin; 942 bfd_vma fdplt, tlsdplt; 943 } got12, gotlos, gothilo; 944 }; 945 946 /* Create an FRV ELF linker hash table. */ 947 948 static struct bfd_link_hash_table * 949 frvfdpic_elf_link_hash_table_create (bfd *abfd) 950 { 951 struct frvfdpic_elf_link_hash_table *ret; 952 bfd_size_type amt = sizeof (struct frvfdpic_elf_link_hash_table); 953 954 ret = bfd_zmalloc (amt); 955 if (ret == NULL) 956 return NULL; 957 958 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, 959 _bfd_elf_link_hash_newfunc, 960 sizeof (struct elf_link_hash_entry), 961 FRV_ELF_DATA)) 962 { 963 free (ret); 964 return NULL; 965 } 966 967 return &ret->elf.root; 968 } 969 970 /* Decide whether a reference to a symbol can be resolved locally or 971 not. If the symbol is protected, we want the local address, but 972 its function descriptor must be assigned by the dynamic linker. */ 973 #define FRVFDPIC_SYM_LOCAL(INFO, H) \ 974 (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \ 975 || ! elf_hash_table (INFO)->dynamic_sections_created) 976 #define FRVFDPIC_FUNCDESC_LOCAL(INFO, H) \ 977 ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created) 978 979 /* This structure collects information on what kind of GOT, PLT or 980 function descriptors are required by relocations that reference a 981 certain symbol. */ 982 struct frvfdpic_relocs_info 983 { 984 /* The index of the symbol, as stored in the relocation r_info, if 985 we have a local symbol; -1 otherwise. */ 986 long symndx; 987 union 988 { 989 /* The input bfd in which the symbol is defined, if it's a local 990 symbol. */ 991 bfd *abfd; 992 /* If symndx == -1, the hash table entry corresponding to a global 993 symbol (even if it turns out to bind locally, in which case it 994 should ideally be replaced with section's symndx + addend). */ 995 struct elf_link_hash_entry *h; 996 } d; 997 /* The addend of the relocation that references the symbol. */ 998 bfd_vma addend; 999 1000 /* The fields above are used to identify an entry. The fields below 1001 contain information on how an entry is used and, later on, which 1002 locations it was assigned. */ 1003 /* The following 3 fields record whether the symbol+addend above was 1004 ever referenced with a GOT relocation. The 12 suffix indicates a 1005 GOT12 relocation; los is used for GOTLO relocations that are not 1006 matched by a GOTHI relocation; hilo is used for GOTLO/GOTHI 1007 pairs. */ 1008 unsigned got12:1; 1009 unsigned gotlos:1; 1010 unsigned gothilo:1; 1011 /* Whether a FUNCDESC relocation references symbol+addend. */ 1012 unsigned fd:1; 1013 /* Whether a FUNCDESC_GOT relocation references symbol+addend. */ 1014 unsigned fdgot12:1; 1015 unsigned fdgotlos:1; 1016 unsigned fdgothilo:1; 1017 /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */ 1018 unsigned fdgoff12:1; 1019 unsigned fdgofflos:1; 1020 unsigned fdgoffhilo:1; 1021 /* Whether a GETTLSOFF relocation references symbol+addend. */ 1022 unsigned tlsplt:1; 1023 /* FIXME: we should probably add tlspltdesc, tlspltoff and 1024 tlspltimm, to tell what kind of TLS PLT entry we're generating. 1025 We might instead just pre-compute flags telling whether the 1026 object is suitable for local exec, initial exec or general 1027 dynamic addressing, and use that all over the place. We could 1028 also try to do a better job of merging TLSOFF and TLSDESC entries 1029 in main executables, but perhaps we can get rid of TLSDESC 1030 entirely in them instead. */ 1031 /* Whether a GOTTLSDESC relocation references symbol+addend. */ 1032 unsigned tlsdesc12:1; 1033 unsigned tlsdesclos:1; 1034 unsigned tlsdeschilo:1; 1035 /* Whether a GOTTLSOFF relocation references symbol+addend. */ 1036 unsigned tlsoff12:1; 1037 unsigned tlsofflos:1; 1038 unsigned tlsoffhilo:1; 1039 /* Whether symbol+addend is referenced with GOTOFF12, GOTOFFLO or 1040 GOTOFFHI relocations. The addend doesn't really matter, since we 1041 envision that this will only be used to check whether the symbol 1042 is mapped to the same segment as the got. */ 1043 unsigned gotoff:1; 1044 /* Whether symbol+addend is referenced by a LABEL24 relocation. */ 1045 unsigned call:1; 1046 /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE 1047 relocation. */ 1048 unsigned sym:1; 1049 /* Whether we need a PLT entry for a symbol. Should be implied by 1050 something like: 1051 (call && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h)) */ 1052 unsigned plt:1; 1053 /* Whether a function descriptor should be created in this link unit 1054 for symbol+addend. Should be implied by something like: 1055 (plt || fdgotoff12 || fdgotofflos || fdgotofflohi 1056 || ((fd || fdgot12 || fdgotlos || fdgothilo) 1057 && (symndx != -1 || FRVFDPIC_FUNCDESC_LOCAL (info, d.h)))) */ 1058 unsigned privfd:1; 1059 /* Whether a lazy PLT entry is needed for this symbol+addend. 1060 Should be implied by something like: 1061 (privfd && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h) 1062 && ! (info->flags & DF_BIND_NOW)) */ 1063 unsigned lazyplt:1; 1064 /* Whether we've already emitted GOT relocations and PLT entries as 1065 needed for this symbol. */ 1066 unsigned done:1; 1067 1068 /* The number of R_FRV_32, R_FRV_FUNCDESC, R_FRV_FUNCDESC_VALUE and 1069 R_FRV_TLSDESC_VALUE, R_FRV_TLSOFF relocations referencing 1070 symbol+addend. */ 1071 unsigned relocs32, relocsfd, relocsfdv, relocstlsd, relocstlsoff; 1072 1073 /* The number of .rofixups entries and dynamic relocations allocated 1074 for this symbol, minus any that might have already been used. */ 1075 unsigned fixups, dynrelocs; 1076 1077 /* The offsets of the GOT entries assigned to symbol+addend, to the 1078 function descriptor's address, and to a function descriptor, 1079 respectively. Should be zero if unassigned. The offsets are 1080 counted from the value that will be assigned to the PIC register, 1081 not from the beginning of the .got section. */ 1082 bfd_signed_vma got_entry, fdgot_entry, fd_entry; 1083 /* The offsets of the PLT entries assigned to symbol+addend, 1084 non-lazy and lazy, respectively. If unassigned, should be 1085 (bfd_vma)-1. */ 1086 bfd_vma plt_entry, lzplt_entry; 1087 /* The offsets of the GOT entries for TLS offset and TLS descriptor. */ 1088 bfd_signed_vma tlsoff_entry, tlsdesc_entry; 1089 /* The offset of the TLS offset PLT entry. */ 1090 bfd_vma tlsplt_entry; 1091 }; 1092 1093 /* Compute a hash with the key fields of an frvfdpic_relocs_info entry. */ 1094 static hashval_t 1095 frvfdpic_relocs_info_hash (const void *entry_) 1096 { 1097 const struct frvfdpic_relocs_info *entry = entry_; 1098 1099 return (entry->symndx == -1 1100 ? (long) entry->d.h->root.root.hash 1101 : entry->symndx + (long) entry->d.abfd->id * 257) + entry->addend; 1102 } 1103 1104 /* Test whether the key fields of two frvfdpic_relocs_info entries are 1105 identical. */ 1106 static int 1107 frvfdpic_relocs_info_eq (const void *entry1, const void *entry2) 1108 { 1109 const struct frvfdpic_relocs_info *e1 = entry1; 1110 const struct frvfdpic_relocs_info *e2 = entry2; 1111 1112 return e1->symndx == e2->symndx && e1->addend == e2->addend 1113 && (e1->symndx == -1 ? e1->d.h == e2->d.h : e1->d.abfd == e2->d.abfd); 1114 } 1115 1116 /* Find or create an entry in a hash table HT that matches the key 1117 fields of the given ENTRY. If it's not found, memory for a new 1118 entry is allocated in ABFD's obstack. */ 1119 static struct frvfdpic_relocs_info * 1120 frvfdpic_relocs_info_find (struct htab *ht, 1121 bfd *abfd, 1122 const struct frvfdpic_relocs_info *entry, 1123 enum insert_option insert) 1124 { 1125 struct frvfdpic_relocs_info **loc = 1126 (struct frvfdpic_relocs_info **) htab_find_slot (ht, entry, insert); 1127 1128 if (! loc) 1129 return NULL; 1130 1131 if (*loc) 1132 return *loc; 1133 1134 *loc = bfd_zalloc (abfd, sizeof (**loc)); 1135 1136 if (! *loc) 1137 return *loc; 1138 1139 (*loc)->symndx = entry->symndx; 1140 (*loc)->d = entry->d; 1141 (*loc)->addend = entry->addend; 1142 (*loc)->plt_entry = (bfd_vma)-1; 1143 (*loc)->lzplt_entry = (bfd_vma)-1; 1144 (*loc)->tlsplt_entry = (bfd_vma)-1; 1145 1146 return *loc; 1147 } 1148 1149 /* Obtain the address of the entry in HT associated with H's symbol + 1150 addend, creating a new entry if none existed. ABFD is only used 1151 for memory allocation purposes. */ 1152 inline static struct frvfdpic_relocs_info * 1153 frvfdpic_relocs_info_for_global (struct htab *ht, 1154 bfd *abfd, 1155 struct elf_link_hash_entry *h, 1156 bfd_vma addend, 1157 enum insert_option insert) 1158 { 1159 struct frvfdpic_relocs_info entry; 1160 1161 entry.symndx = -1; 1162 entry.d.h = h; 1163 entry.addend = addend; 1164 1165 return frvfdpic_relocs_info_find (ht, abfd, &entry, insert); 1166 } 1167 1168 /* Obtain the address of the entry in HT associated with the SYMNDXth 1169 local symbol of the input bfd ABFD, plus the addend, creating a new 1170 entry if none existed. */ 1171 inline static struct frvfdpic_relocs_info * 1172 frvfdpic_relocs_info_for_local (struct htab *ht, 1173 bfd *abfd, 1174 long symndx, 1175 bfd_vma addend, 1176 enum insert_option insert) 1177 { 1178 struct frvfdpic_relocs_info entry; 1179 1180 entry.symndx = symndx; 1181 entry.d.abfd = abfd; 1182 entry.addend = addend; 1183 1184 return frvfdpic_relocs_info_find (ht, abfd, &entry, insert); 1185 } 1186 1187 /* Merge fields set by check_relocs() of two entries that end up being 1188 mapped to the same (presumably global) symbol. */ 1189 1190 inline static void 1191 frvfdpic_pic_merge_early_relocs_info (struct frvfdpic_relocs_info *e2, 1192 struct frvfdpic_relocs_info const *e1) 1193 { 1194 e2->got12 |= e1->got12; 1195 e2->gotlos |= e1->gotlos; 1196 e2->gothilo |= e1->gothilo; 1197 e2->fd |= e1->fd; 1198 e2->fdgot12 |= e1->fdgot12; 1199 e2->fdgotlos |= e1->fdgotlos; 1200 e2->fdgothilo |= e1->fdgothilo; 1201 e2->fdgoff12 |= e1->fdgoff12; 1202 e2->fdgofflos |= e1->fdgofflos; 1203 e2->fdgoffhilo |= e1->fdgoffhilo; 1204 e2->tlsplt |= e1->tlsplt; 1205 e2->tlsdesc12 |= e1->tlsdesc12; 1206 e2->tlsdesclos |= e1->tlsdesclos; 1207 e2->tlsdeschilo |= e1->tlsdeschilo; 1208 e2->tlsoff12 |= e1->tlsoff12; 1209 e2->tlsofflos |= e1->tlsofflos; 1210 e2->tlsoffhilo |= e1->tlsoffhilo; 1211 e2->gotoff |= e1->gotoff; 1212 e2->call |= e1->call; 1213 e2->sym |= e1->sym; 1214 } 1215 1216 /* Every block of 65535 lazy PLT entries shares a single call to the 1217 resolver, inserted in the 32768th lazy PLT entry (i.e., entry # 1218 32767, counting from 0). All other lazy PLT entries branch to it 1219 in a single instruction. */ 1220 1221 #define FRVFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) 8 * 65535 + 4) 1222 #define FRVFDPIC_LZPLT_RESOLV_LOC (8 * 32767) 1223 1224 /* Add a dynamic relocation to the SRELOC section. */ 1225 1226 inline static bfd_vma 1227 _frvfdpic_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset, 1228 int reloc_type, long dynindx, bfd_vma addend, 1229 struct frvfdpic_relocs_info *entry) 1230 { 1231 Elf_Internal_Rela outrel; 1232 bfd_vma reloc_offset; 1233 1234 outrel.r_offset = offset; 1235 outrel.r_info = ELF32_R_INFO (dynindx, reloc_type); 1236 outrel.r_addend = addend; 1237 1238 reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rel); 1239 BFD_ASSERT (reloc_offset < sreloc->size); 1240 bfd_elf32_swap_reloc_out (output_bfd, &outrel, 1241 sreloc->contents + reloc_offset); 1242 sreloc->reloc_count++; 1243 1244 /* If the entry's index is zero, this relocation was probably to a 1245 linkonce section that got discarded. We reserved a dynamic 1246 relocation, but it was for another entry than the one we got at 1247 the time of emitting the relocation. Unfortunately there's no 1248 simple way for us to catch this situation, since the relocation 1249 is cleared right before calling relocate_section, at which point 1250 we no longer know what the relocation used to point to. */ 1251 if (entry->symndx) 1252 { 1253 BFD_ASSERT (entry->dynrelocs > 0); 1254 entry->dynrelocs--; 1255 } 1256 1257 return reloc_offset; 1258 } 1259 1260 /* Add a fixup to the ROFIXUP section. */ 1261 1262 static bfd_vma 1263 _frvfdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma offset, 1264 struct frvfdpic_relocs_info *entry) 1265 { 1266 bfd_vma fixup_offset; 1267 1268 if (rofixup->flags & SEC_EXCLUDE) 1269 return -1; 1270 1271 fixup_offset = rofixup->reloc_count * 4; 1272 if (rofixup->contents) 1273 { 1274 BFD_ASSERT (fixup_offset < rofixup->size); 1275 bfd_put_32 (output_bfd, offset, rofixup->contents + fixup_offset); 1276 } 1277 rofixup->reloc_count++; 1278 1279 if (entry && entry->symndx) 1280 { 1281 /* See discussion about symndx == 0 in _frvfdpic_add_dyn_reloc 1282 above. */ 1283 BFD_ASSERT (entry->fixups > 0); 1284 entry->fixups--; 1285 } 1286 1287 return fixup_offset; 1288 } 1289 1290 /* Find the segment number in which OSEC, and output section, is 1291 located. */ 1292 1293 static unsigned 1294 _frvfdpic_osec_to_segment (bfd *output_bfd, asection *osec) 1295 { 1296 Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section (output_bfd, osec); 1297 1298 return (p != NULL) ? p - elf_tdata (output_bfd)->phdr : -1; 1299 } 1300 1301 inline static bfd_boolean 1302 _frvfdpic_osec_readonly_p (bfd *output_bfd, asection *osec) 1303 { 1304 unsigned seg = _frvfdpic_osec_to_segment (output_bfd, osec); 1305 1306 return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W); 1307 } 1308 1309 #define FRVFDPIC_TLS_BIAS (2048 - 16) 1310 1311 /* Return the base VMA address which should be subtracted from real addresses 1312 when resolving TLSMOFF relocation. 1313 This is PT_TLS segment p_vaddr, plus the 2048-16 bias. */ 1314 1315 static bfd_vma 1316 tls_biased_base (struct bfd_link_info *info) 1317 { 1318 /* If tls_sec is NULL, we should have signalled an error already. */ 1319 if (elf_hash_table (info)->tls_sec == NULL) 1320 return FRVFDPIC_TLS_BIAS; 1321 return elf_hash_table (info)->tls_sec->vma + FRVFDPIC_TLS_BIAS; 1322 } 1323 1324 /* Generate relocations for GOT entries, function descriptors, and 1325 code for PLT and lazy PLT entries. */ 1326 1327 inline static bfd_boolean 1328 _frvfdpic_emit_got_relocs_plt_entries (struct frvfdpic_relocs_info *entry, 1329 bfd *output_bfd, 1330 struct bfd_link_info *info, 1331 asection *sec, 1332 Elf_Internal_Sym *sym, 1333 bfd_vma addend) 1334 1335 { 1336 bfd_vma fd_lazy_rel_offset = (bfd_vma)-1; 1337 int dynindx = -1; 1338 1339 if (entry->done) 1340 return TRUE; 1341 entry->done = 1; 1342 1343 if (entry->got_entry || entry->fdgot_entry || entry->fd_entry 1344 || entry->tlsoff_entry || entry->tlsdesc_entry) 1345 { 1346 /* If the symbol is dynamic, consider it for dynamic 1347 relocations, otherwise decay to section + offset. */ 1348 if (entry->symndx == -1 && entry->d.h->dynindx != -1) 1349 dynindx = entry->d.h->dynindx; 1350 else 1351 { 1352 if (sec 1353 && sec->output_section 1354 && ! bfd_is_abs_section (sec->output_section) 1355 && ! bfd_is_und_section (sec->output_section)) 1356 dynindx = elf_section_data (sec->output_section)->dynindx; 1357 else 1358 dynindx = 0; 1359 } 1360 } 1361 1362 /* Generate relocation for GOT entry pointing to the symbol. */ 1363 if (entry->got_entry) 1364 { 1365 int idx = dynindx; 1366 bfd_vma ad = addend; 1367 1368 /* If the symbol is dynamic but binds locally, use 1369 section+offset. */ 1370 if (sec && (entry->symndx != -1 1371 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1372 { 1373 if (entry->symndx == -1) 1374 ad += entry->d.h->root.u.def.value; 1375 else 1376 ad += sym->st_value; 1377 ad += sec->output_offset; 1378 if (sec->output_section && elf_section_data (sec->output_section)) 1379 idx = elf_section_data (sec->output_section)->dynindx; 1380 else 1381 idx = 0; 1382 } 1383 1384 /* If we're linking an executable at a fixed address, we can 1385 omit the dynamic relocation as long as the symbol is local to 1386 this module. */ 1387 if (info->executable && !info->pie 1388 && (entry->symndx != -1 1389 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1390 { 1391 if (sec) 1392 ad += sec->output_section->vma; 1393 if (entry->symndx != -1 1394 || entry->d.h->root.type != bfd_link_hash_undefweak) 1395 _frvfdpic_add_rofixup (output_bfd, 1396 frvfdpic_gotfixup_section (info), 1397 frvfdpic_got_section (info)->output_section 1398 ->vma 1399 + frvfdpic_got_section (info)->output_offset 1400 + frvfdpic_got_initial_offset (info) 1401 + entry->got_entry, entry); 1402 } 1403 else 1404 _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), 1405 _bfd_elf_section_offset 1406 (output_bfd, info, 1407 frvfdpic_got_section (info), 1408 frvfdpic_got_initial_offset (info) 1409 + entry->got_entry) 1410 + frvfdpic_got_section (info) 1411 ->output_section->vma 1412 + frvfdpic_got_section (info)->output_offset, 1413 R_FRV_32, idx, ad, entry); 1414 1415 bfd_put_32 (output_bfd, ad, 1416 frvfdpic_got_section (info)->contents 1417 + frvfdpic_got_initial_offset (info) 1418 + entry->got_entry); 1419 } 1420 1421 /* Generate relocation for GOT entry pointing to a canonical 1422 function descriptor. */ 1423 if (entry->fdgot_entry) 1424 { 1425 int reloc, idx; 1426 bfd_vma ad = 0; 1427 1428 if (! (entry->symndx == -1 1429 && entry->d.h->root.type == bfd_link_hash_undefweak 1430 && FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1431 { 1432 /* If the symbol is dynamic and there may be dynamic symbol 1433 resolution because we are, or are linked with, a shared 1434 library, emit a FUNCDESC relocation such that the dynamic 1435 linker will allocate the function descriptor. If the 1436 symbol needs a non-local function descriptor but binds 1437 locally (e.g., its visibility is protected, emit a 1438 dynamic relocation decayed to section+offset. */ 1439 if (entry->symndx == -1 1440 && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h) 1441 && FRVFDPIC_SYM_LOCAL (info, entry->d.h) 1442 && !(info->executable && !info->pie)) 1443 { 1444 reloc = R_FRV_FUNCDESC; 1445 idx = elf_section_data (entry->d.h->root.u.def.section 1446 ->output_section)->dynindx; 1447 ad = entry->d.h->root.u.def.section->output_offset 1448 + entry->d.h->root.u.def.value; 1449 } 1450 else if (entry->symndx == -1 1451 && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h)) 1452 { 1453 reloc = R_FRV_FUNCDESC; 1454 idx = dynindx; 1455 ad = addend; 1456 if (ad) 1457 { 1458 (*info->callbacks->reloc_dangerous) 1459 (info, _("relocation requires zero addend"), 1460 elf_hash_table (info)->dynobj, 1461 frvfdpic_got_section (info), 1462 entry->fdgot_entry); 1463 return FALSE; 1464 } 1465 } 1466 else 1467 { 1468 /* Otherwise, we know we have a private function descriptor, 1469 so reference it directly. */ 1470 if (elf_hash_table (info)->dynamic_sections_created) 1471 BFD_ASSERT (entry->privfd); 1472 reloc = R_FRV_32; 1473 idx = elf_section_data (frvfdpic_got_section (info) 1474 ->output_section)->dynindx; 1475 ad = frvfdpic_got_section (info)->output_offset 1476 + frvfdpic_got_initial_offset (info) + entry->fd_entry; 1477 } 1478 1479 /* If there is room for dynamic symbol resolution, emit the 1480 dynamic relocation. However, if we're linking an 1481 executable at a fixed location, we won't have emitted a 1482 dynamic symbol entry for the got section, so idx will be 1483 zero, which means we can and should compute the address 1484 of the private descriptor ourselves. */ 1485 if (info->executable && !info->pie 1486 && (entry->symndx != -1 1487 || FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h))) 1488 { 1489 ad += frvfdpic_got_section (info)->output_section->vma; 1490 _frvfdpic_add_rofixup (output_bfd, 1491 frvfdpic_gotfixup_section (info), 1492 frvfdpic_got_section (info) 1493 ->output_section->vma 1494 + frvfdpic_got_section (info) 1495 ->output_offset 1496 + frvfdpic_got_initial_offset (info) 1497 + entry->fdgot_entry, entry); 1498 } 1499 else 1500 _frvfdpic_add_dyn_reloc (output_bfd, 1501 frvfdpic_gotrel_section (info), 1502 _bfd_elf_section_offset 1503 (output_bfd, info, 1504 frvfdpic_got_section (info), 1505 frvfdpic_got_initial_offset (info) 1506 + entry->fdgot_entry) 1507 + frvfdpic_got_section (info) 1508 ->output_section->vma 1509 + frvfdpic_got_section (info) 1510 ->output_offset, 1511 reloc, idx, ad, entry); 1512 } 1513 1514 bfd_put_32 (output_bfd, ad, 1515 frvfdpic_got_section (info)->contents 1516 + frvfdpic_got_initial_offset (info) 1517 + entry->fdgot_entry); 1518 } 1519 1520 /* Generate relocation to fill in a private function descriptor in 1521 the GOT. */ 1522 if (entry->fd_entry) 1523 { 1524 int idx = dynindx; 1525 bfd_vma ad = addend; 1526 bfd_vma ofst; 1527 long lowword, highword; 1528 1529 /* If the symbol is dynamic but binds locally, use 1530 section+offset. */ 1531 if (sec && (entry->symndx != -1 1532 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1533 { 1534 if (entry->symndx == -1) 1535 ad += entry->d.h->root.u.def.value; 1536 else 1537 ad += sym->st_value; 1538 ad += sec->output_offset; 1539 if (sec->output_section && elf_section_data (sec->output_section)) 1540 idx = elf_section_data (sec->output_section)->dynindx; 1541 else 1542 idx = 0; 1543 } 1544 1545 /* If we're linking an executable at a fixed address, we can 1546 omit the dynamic relocation as long as the symbol is local to 1547 this module. */ 1548 if (info->executable && !info->pie 1549 && (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1550 { 1551 if (sec) 1552 ad += sec->output_section->vma; 1553 ofst = 0; 1554 if (entry->symndx != -1 1555 || entry->d.h->root.type != bfd_link_hash_undefweak) 1556 { 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, entry); 1565 _frvfdpic_add_rofixup (output_bfd, 1566 frvfdpic_gotfixup_section (info), 1567 frvfdpic_got_section (info) 1568 ->output_section->vma 1569 + frvfdpic_got_section (info) 1570 ->output_offset 1571 + frvfdpic_got_initial_offset (info) 1572 + entry->fd_entry + 4, entry); 1573 } 1574 } 1575 else 1576 { 1577 ofst = 1578 _frvfdpic_add_dyn_reloc (output_bfd, 1579 entry->lazyplt 1580 ? frvfdpic_pltrel_section (info) 1581 : frvfdpic_gotrel_section (info), 1582 _bfd_elf_section_offset 1583 (output_bfd, info, 1584 frvfdpic_got_section (info), 1585 frvfdpic_got_initial_offset (info) 1586 + entry->fd_entry) 1587 + frvfdpic_got_section (info) 1588 ->output_section->vma 1589 + frvfdpic_got_section (info) 1590 ->output_offset, 1591 R_FRV_FUNCDESC_VALUE, idx, ad, entry); 1592 } 1593 1594 /* If we've omitted the dynamic relocation, just emit the fixed 1595 addresses of the symbol and of the local GOT base offset. */ 1596 if (info->executable && !info->pie && sec && sec->output_section) 1597 { 1598 lowword = ad; 1599 highword = frvfdpic_got_section (info)->output_section->vma 1600 + frvfdpic_got_section (info)->output_offset 1601 + frvfdpic_got_initial_offset (info); 1602 } 1603 else if (entry->lazyplt) 1604 { 1605 if (ad) 1606 { 1607 (*info->callbacks->reloc_dangerous) 1608 (info, _("relocation requires zero addend"), 1609 elf_hash_table (info)->dynobj, 1610 frvfdpic_got_section (info), 1611 entry->fd_entry); 1612 return FALSE; 1613 } 1614 1615 fd_lazy_rel_offset = ofst; 1616 1617 /* A function descriptor used for lazy or local resolving is 1618 initialized such that its high word contains the output 1619 section index in which the PLT entries are located, and 1620 the low word contains the address of the lazy PLT entry 1621 entry point, that must be within the memory region 1622 assigned to that section. */ 1623 lowword = entry->lzplt_entry + 4 1624 + frvfdpic_plt_section (info)->output_offset 1625 + frvfdpic_plt_section (info)->output_section->vma; 1626 highword = _frvfdpic_osec_to_segment 1627 (output_bfd, frvfdpic_plt_section (info)->output_section); 1628 } 1629 else 1630 { 1631 /* A function descriptor for a local function gets the index 1632 of the section. For a non-local function, it's 1633 disregarded. */ 1634 lowword = ad; 1635 if (sec == NULL 1636 || (entry->symndx == -1 && entry->d.h->dynindx != -1 1637 && entry->d.h->dynindx == idx)) 1638 highword = 0; 1639 else 1640 highword = _frvfdpic_osec_to_segment 1641 (output_bfd, sec->output_section); 1642 } 1643 1644 bfd_put_32 (output_bfd, lowword, 1645 frvfdpic_got_section (info)->contents 1646 + frvfdpic_got_initial_offset (info) 1647 + entry->fd_entry); 1648 bfd_put_32 (output_bfd, highword, 1649 frvfdpic_got_section (info)->contents 1650 + frvfdpic_got_initial_offset (info) 1651 + entry->fd_entry + 4); 1652 } 1653 1654 /* Generate code for the PLT entry. */ 1655 if (entry->plt_entry != (bfd_vma) -1) 1656 { 1657 bfd_byte *plt_code = frvfdpic_plt_section (info)->contents 1658 + entry->plt_entry; 1659 1660 BFD_ASSERT (entry->fd_entry); 1661 1662 /* Figure out what kind of PLT entry we need, depending on the 1663 location of the function descriptor within the GOT. */ 1664 if (entry->fd_entry >= -(1 << (12 - 1)) 1665 && entry->fd_entry < (1 << (12 - 1))) 1666 { 1667 /* lddi @(gr15, fd_entry), gr14 */ 1668 bfd_put_32 (output_bfd, 1669 0x9cccf000 | (entry->fd_entry & ((1 << 12) - 1)), 1670 plt_code); 1671 plt_code += 4; 1672 } 1673 else 1674 { 1675 if (entry->fd_entry >= -(1 << (16 - 1)) 1676 && entry->fd_entry < (1 << (16 - 1))) 1677 { 1678 /* setlos lo(fd_entry), gr14 */ 1679 bfd_put_32 (output_bfd, 1680 0x9cfc0000 1681 | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)), 1682 plt_code); 1683 plt_code += 4; 1684 } 1685 else 1686 { 1687 /* sethi.p hi(fd_entry), gr14 1688 setlo lo(fd_entry), gr14 */ 1689 bfd_put_32 (output_bfd, 1690 0x1cf80000 1691 | ((entry->fd_entry >> 16) 1692 & (((bfd_vma)1 << 16) - 1)), 1693 plt_code); 1694 plt_code += 4; 1695 bfd_put_32 (output_bfd, 1696 0x9cf40000 1697 | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)), 1698 plt_code); 1699 plt_code += 4; 1700 } 1701 /* ldd @(gr14,gr15),gr14 */ 1702 bfd_put_32 (output_bfd, 0x9c08e14f, plt_code); 1703 plt_code += 4; 1704 } 1705 /* jmpl @(gr14,gr0) */ 1706 bfd_put_32 (output_bfd, 0x8030e000, plt_code); 1707 } 1708 1709 /* Generate code for the lazy PLT entry. */ 1710 if (entry->lzplt_entry != (bfd_vma) -1) 1711 { 1712 bfd_byte *lzplt_code = frvfdpic_plt_section (info)->contents 1713 + entry->lzplt_entry; 1714 bfd_vma resolverStub_addr; 1715 1716 bfd_put_32 (output_bfd, fd_lazy_rel_offset, lzplt_code); 1717 lzplt_code += 4; 1718 1719 resolverStub_addr = entry->lzplt_entry / FRVFDPIC_LZPLT_BLOCK_SIZE 1720 * FRVFDPIC_LZPLT_BLOCK_SIZE + FRVFDPIC_LZPLT_RESOLV_LOC; 1721 if (resolverStub_addr >= frvfdpic_plt_initial_offset (info)) 1722 resolverStub_addr = frvfdpic_plt_initial_offset (info) - 12; 1723 1724 if (entry->lzplt_entry == resolverStub_addr) 1725 { 1726 /* This is a lazy PLT entry that includes a resolver call. */ 1727 /* ldd @(gr15,gr0), gr4 1728 jmpl @(gr4,gr0) */ 1729 bfd_put_32 (output_bfd, 0x8808f140, lzplt_code); 1730 bfd_put_32 (output_bfd, 0x80304000, lzplt_code + 4); 1731 } 1732 else 1733 { 1734 /* bra resolverStub */ 1735 bfd_put_32 (output_bfd, 1736 0xc01a0000 1737 | (((resolverStub_addr - entry->lzplt_entry) 1738 / 4) & (((bfd_vma)1 << 16) - 1)), 1739 lzplt_code); 1740 } 1741 } 1742 1743 /* Generate relocation for GOT entry holding the TLS offset. */ 1744 if (entry->tlsoff_entry) 1745 { 1746 int idx = dynindx; 1747 bfd_vma ad = addend; 1748 1749 if (entry->symndx != -1 1750 || FRVFDPIC_SYM_LOCAL (info, entry->d.h)) 1751 { 1752 /* If the symbol is dynamic but binds locally, use 1753 section+offset. */ 1754 if (sec) 1755 { 1756 if (entry->symndx == -1) 1757 ad += entry->d.h->root.u.def.value; 1758 else 1759 ad += sym->st_value; 1760 ad += sec->output_offset; 1761 if (sec->output_section 1762 && elf_section_data (sec->output_section)) 1763 idx = elf_section_data (sec->output_section)->dynindx; 1764 else 1765 idx = 0; 1766 } 1767 } 1768 1769 /* *ABS*+addend is special for TLS relocations, use only the 1770 addend. */ 1771 if (info->executable 1772 && idx == 0 1773 && (bfd_is_abs_section (sec) 1774 || bfd_is_und_section (sec))) 1775 ; 1776 /* If we're linking an executable, we can entirely omit the 1777 dynamic relocation if the symbol is local to this module. */ 1778 else if (info->executable 1779 && (entry->symndx != -1 1780 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1781 { 1782 if (sec) 1783 ad += sec->output_section->vma - tls_biased_base (info); 1784 } 1785 else 1786 { 1787 if (idx == 0 1788 && (bfd_is_abs_section (sec) 1789 || bfd_is_und_section (sec))) 1790 { 1791 if (! elf_hash_table (info)->tls_sec) 1792 { 1793 (*info->callbacks->undefined_symbol) 1794 (info, "TLS section", elf_hash_table (info)->dynobj, 1795 frvfdpic_got_section (info), entry->tlsoff_entry, TRUE); 1796 return FALSE; 1797 } 1798 idx = elf_section_data (elf_hash_table (info)->tls_sec)->dynindx; 1799 ad += FRVFDPIC_TLS_BIAS; 1800 } 1801 _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), 1802 _bfd_elf_section_offset 1803 (output_bfd, info, 1804 frvfdpic_got_section (info), 1805 frvfdpic_got_initial_offset (info) 1806 + entry->tlsoff_entry) 1807 + frvfdpic_got_section (info) 1808 ->output_section->vma 1809 + frvfdpic_got_section (info) 1810 ->output_offset, 1811 R_FRV_TLSOFF, idx, ad, entry); 1812 } 1813 1814 bfd_put_32 (output_bfd, ad, 1815 frvfdpic_got_section (info)->contents 1816 + frvfdpic_got_initial_offset (info) 1817 + entry->tlsoff_entry); 1818 } 1819 1820 if (entry->tlsdesc_entry) 1821 { 1822 int idx = dynindx; 1823 bfd_vma ad = addend; 1824 1825 /* If the symbol is dynamic but binds locally, use 1826 section+offset. */ 1827 if (sec && (entry->symndx != -1 1828 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1829 { 1830 if (entry->symndx == -1) 1831 ad += entry->d.h->root.u.def.value; 1832 else 1833 ad += sym->st_value; 1834 ad += sec->output_offset; 1835 if (sec->output_section && elf_section_data (sec->output_section)) 1836 idx = elf_section_data (sec->output_section)->dynindx; 1837 else 1838 idx = 0; 1839 } 1840 1841 /* If we didn't set up a TLS offset entry, but we're linking an 1842 executable and the symbol binds locally, we can use the 1843 module offset in the TLS descriptor in relaxations. */ 1844 if (info->executable && ! entry->tlsoff_entry) 1845 entry->tlsoff_entry = entry->tlsdesc_entry + 4; 1846 1847 if (info->executable && !info->pie 1848 && ((idx == 0 1849 && (bfd_is_abs_section (sec) 1850 || bfd_is_und_section (sec))) 1851 || entry->symndx != -1 1852 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1853 { 1854 /* *ABS*+addend is special for TLS relocations, use only the 1855 addend for the TLS offset, and take the module id as 1856 0. */ 1857 if (idx == 0 1858 && (bfd_is_abs_section (sec) 1859 || bfd_is_und_section (sec))) 1860 ; 1861 /* For other TLS symbols that bind locally, add the section 1862 TLS offset to the addend. */ 1863 else if (sec) 1864 ad += sec->output_section->vma - tls_biased_base (info); 1865 1866 bfd_put_32 (output_bfd, 1867 frvfdpic_plt_section (info)->output_section->vma 1868 + frvfdpic_plt_section (info)->output_offset 1869 + frvfdpic_plt_tls_ret_offset (info), 1870 frvfdpic_got_section (info)->contents 1871 + frvfdpic_got_initial_offset (info) 1872 + entry->tlsdesc_entry); 1873 1874 _frvfdpic_add_rofixup (output_bfd, 1875 frvfdpic_gotfixup_section (info), 1876 frvfdpic_got_section (info) 1877 ->output_section->vma 1878 + frvfdpic_got_section (info) 1879 ->output_offset 1880 + frvfdpic_got_initial_offset (info) 1881 + entry->tlsdesc_entry, entry); 1882 1883 BFD_ASSERT (frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs); 1884 1885 /* We've used one of the reserved fixups, so discount it so 1886 that we can check at the end that we've used them 1887 all. */ 1888 frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs--; 1889 1890 /* While at that, make sure the ret instruction makes to the 1891 right location in the PLT. We could do it only when we 1892 got to 0, but since the check at the end will only print 1893 a warning, make sure we have the ret in place in case the 1894 warning is missed. */ 1895 bfd_put_32 (output_bfd, 0xc03a4000, 1896 frvfdpic_plt_section (info)->contents 1897 + frvfdpic_plt_tls_ret_offset (info)); 1898 } 1899 else 1900 { 1901 if (idx == 0 1902 && (bfd_is_abs_section (sec) 1903 || bfd_is_und_section (sec))) 1904 { 1905 if (! elf_hash_table (info)->tls_sec) 1906 { 1907 (*info->callbacks->undefined_symbol) 1908 (info, "TLS section", elf_hash_table (info)->dynobj, 1909 frvfdpic_got_section (info), entry->tlsdesc_entry, TRUE); 1910 return FALSE; 1911 } 1912 idx = elf_section_data (elf_hash_table (info)->tls_sec)->dynindx; 1913 ad += FRVFDPIC_TLS_BIAS; 1914 } 1915 1916 _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), 1917 _bfd_elf_section_offset 1918 (output_bfd, info, 1919 frvfdpic_got_section (info), 1920 frvfdpic_got_initial_offset (info) 1921 + entry->tlsdesc_entry) 1922 + frvfdpic_got_section (info) 1923 ->output_section->vma 1924 + frvfdpic_got_section (info) 1925 ->output_offset, 1926 R_FRV_TLSDESC_VALUE, idx, ad, entry); 1927 1928 bfd_put_32 (output_bfd, 0, 1929 frvfdpic_got_section (info)->contents 1930 + frvfdpic_got_initial_offset (info) 1931 + entry->tlsdesc_entry); 1932 } 1933 1934 bfd_put_32 (output_bfd, ad, 1935 frvfdpic_got_section (info)->contents 1936 + frvfdpic_got_initial_offset (info) 1937 + entry->tlsdesc_entry + 4); 1938 } 1939 1940 /* Generate code for the get-TLS-offset PLT entry. */ 1941 if (entry->tlsplt_entry != (bfd_vma) -1) 1942 { 1943 bfd_byte *plt_code = frvfdpic_plt_section (info)->contents 1944 + entry->tlsplt_entry; 1945 1946 if (info->executable 1947 && (entry->symndx != -1 1948 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1949 { 1950 int idx = dynindx; 1951 bfd_vma ad = addend; 1952 1953 /* sec may be NULL when referencing an undefweak symbol 1954 while linking a static executable. */ 1955 if (!sec) 1956 { 1957 BFD_ASSERT (entry->symndx == -1 1958 && entry->d.h->root.type == bfd_link_hash_undefweak); 1959 } 1960 else 1961 { 1962 if (entry->symndx == -1) 1963 ad += entry->d.h->root.u.def.value; 1964 else 1965 ad += sym->st_value; 1966 ad += sec->output_offset; 1967 if (sec->output_section 1968 && elf_section_data (sec->output_section)) 1969 idx = elf_section_data (sec->output_section)->dynindx; 1970 else 1971 idx = 0; 1972 } 1973 1974 /* *ABS*+addend is special for TLS relocations, use only the 1975 addend for the TLS offset, and take the module id as 1976 0. */ 1977 if (idx == 0 1978 && (bfd_is_abs_section (sec) 1979 || bfd_is_und_section (sec))) 1980 ; 1981 /* For other TLS symbols that bind locally, add the section 1982 TLS offset to the addend. */ 1983 else if (sec) 1984 ad += sec->output_section->vma - tls_biased_base (info); 1985 1986 if ((bfd_signed_vma)ad >= -(1 << (16 - 1)) 1987 && (bfd_signed_vma)ad < (1 << (16 - 1))) 1988 { 1989 /* setlos lo(ad), gr9 */ 1990 bfd_put_32 (output_bfd, 1991 0x92fc0000 1992 | (ad 1993 & (((bfd_vma)1 << 16) - 1)), 1994 plt_code); 1995 plt_code += 4; 1996 } 1997 else 1998 { 1999 /* sethi.p hi(ad), gr9 2000 setlo lo(ad), gr9 */ 2001 bfd_put_32 (output_bfd, 2002 0x12f80000 2003 | ((ad >> 16) 2004 & (((bfd_vma)1 << 16) - 1)), 2005 plt_code); 2006 plt_code += 4; 2007 bfd_put_32 (output_bfd, 2008 0x92f40000 2009 | (ad 2010 & (((bfd_vma)1 << 16) - 1)), 2011 plt_code); 2012 plt_code += 4; 2013 } 2014 /* ret */ 2015 bfd_put_32 (output_bfd, 0xc03a4000, plt_code); 2016 } 2017 else if (entry->tlsoff_entry) 2018 { 2019 /* Figure out what kind of PLT entry we need, depending on the 2020 location of the TLS descriptor within the GOT. */ 2021 if (entry->tlsoff_entry >= -(1 << (12 - 1)) 2022 && entry->tlsoff_entry < (1 << (12 - 1))) 2023 { 2024 /* ldi @(gr15, tlsoff_entry), gr9 */ 2025 bfd_put_32 (output_bfd, 2026 0x92c8f000 | (entry->tlsoff_entry 2027 & ((1 << 12) - 1)), 2028 plt_code); 2029 plt_code += 4; 2030 } 2031 else 2032 { 2033 if (entry->tlsoff_entry >= -(1 << (16 - 1)) 2034 && entry->tlsoff_entry < (1 << (16 - 1))) 2035 { 2036 /* setlos lo(tlsoff_entry), gr8 */ 2037 bfd_put_32 (output_bfd, 2038 0x90fc0000 2039 | (entry->tlsoff_entry 2040 & (((bfd_vma)1 << 16) - 1)), 2041 plt_code); 2042 plt_code += 4; 2043 } 2044 else 2045 { 2046 /* sethi.p hi(tlsoff_entry), gr8 2047 setlo lo(tlsoff_entry), gr8 */ 2048 bfd_put_32 (output_bfd, 2049 0x10f80000 2050 | ((entry->tlsoff_entry >> 16) 2051 & (((bfd_vma)1 << 16) - 1)), 2052 plt_code); 2053 plt_code += 4; 2054 bfd_put_32 (output_bfd, 2055 0x90f40000 2056 | (entry->tlsoff_entry 2057 & (((bfd_vma)1 << 16) - 1)), 2058 plt_code); 2059 plt_code += 4; 2060 } 2061 /* ld @(gr15,gr8),gr9 */ 2062 bfd_put_32 (output_bfd, 0x9008f108, plt_code); 2063 plt_code += 4; 2064 } 2065 /* ret */ 2066 bfd_put_32 (output_bfd, 0xc03a4000, plt_code); 2067 } 2068 else 2069 { 2070 BFD_ASSERT (entry->tlsdesc_entry); 2071 2072 /* Figure out what kind of PLT entry we need, depending on the 2073 location of the TLS descriptor within the GOT. */ 2074 if (entry->tlsdesc_entry >= -(1 << (12 - 1)) 2075 && entry->tlsdesc_entry < (1 << (12 - 1))) 2076 { 2077 /* lddi @(gr15, tlsdesc_entry), gr8 */ 2078 bfd_put_32 (output_bfd, 2079 0x90ccf000 | (entry->tlsdesc_entry 2080 & ((1 << 12) - 1)), 2081 plt_code); 2082 plt_code += 4; 2083 } 2084 else 2085 { 2086 if (entry->tlsdesc_entry >= -(1 << (16 - 1)) 2087 && entry->tlsdesc_entry < (1 << (16 - 1))) 2088 { 2089 /* setlos lo(tlsdesc_entry), gr8 */ 2090 bfd_put_32 (output_bfd, 2091 0x90fc0000 2092 | (entry->tlsdesc_entry 2093 & (((bfd_vma)1 << 16) - 1)), 2094 plt_code); 2095 plt_code += 4; 2096 } 2097 else 2098 { 2099 /* sethi.p hi(tlsdesc_entry), gr8 2100 setlo lo(tlsdesc_entry), gr8 */ 2101 bfd_put_32 (output_bfd, 2102 0x10f80000 2103 | ((entry->tlsdesc_entry >> 16) 2104 & (((bfd_vma)1 << 16) - 1)), 2105 plt_code); 2106 plt_code += 4; 2107 bfd_put_32 (output_bfd, 2108 0x90f40000 2109 | (entry->tlsdesc_entry 2110 & (((bfd_vma)1 << 16) - 1)), 2111 plt_code); 2112 plt_code += 4; 2113 } 2114 /* ldd @(gr15,gr8),gr8 */ 2115 bfd_put_32 (output_bfd, 0x9008f148, plt_code); 2116 plt_code += 4; 2117 } 2118 /* jmpl @(gr8,gr0) */ 2119 bfd_put_32 (output_bfd, 0x80308000, plt_code); 2120 } 2121 } 2122 2123 return TRUE; 2124 } 2125 2126 /* Handle an FRV small data reloc. */ 2127 2128 static bfd_reloc_status_type 2129 elf32_frv_relocate_gprel12 (struct bfd_link_info *info, 2130 bfd *input_bfd, 2131 asection *input_section, 2132 Elf_Internal_Rela *relocation, 2133 bfd_byte *contents, 2134 bfd_vma value) 2135 { 2136 bfd_vma insn; 2137 bfd_vma gp; 2138 struct bfd_link_hash_entry *h; 2139 2140 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 2141 2142 gp = (h->u.def.value 2143 + h->u.def.section->output_section->vma 2144 + h->u.def.section->output_offset); 2145 2146 value -= input_section->output_section->vma; 2147 value -= (gp - input_section->output_section->vma); 2148 2149 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 2150 2151 value += relocation->r_addend; 2152 2153 if ((long) value > 0x7ff || (long) value < -0x800) 2154 return bfd_reloc_overflow; 2155 2156 bfd_put_32 (input_bfd, 2157 (insn & 0xfffff000) | (value & 0xfff), 2158 contents + relocation->r_offset); 2159 2160 return bfd_reloc_ok; 2161 } 2162 2163 /* Handle an FRV small data reloc. for the u12 field. */ 2164 2165 static bfd_reloc_status_type 2166 elf32_frv_relocate_gprelu12 (struct bfd_link_info *info, 2167 bfd *input_bfd, 2168 asection *input_section, 2169 Elf_Internal_Rela *relocation, 2170 bfd_byte *contents, 2171 bfd_vma value) 2172 { 2173 bfd_vma insn; 2174 bfd_vma gp; 2175 struct bfd_link_hash_entry *h; 2176 bfd_vma mask; 2177 2178 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 2179 2180 gp = (h->u.def.value 2181 + h->u.def.section->output_section->vma 2182 + h->u.def.section->output_offset); 2183 2184 value -= input_section->output_section->vma; 2185 value -= (gp - input_section->output_section->vma); 2186 2187 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 2188 2189 value += relocation->r_addend; 2190 2191 if ((long) value > 0x7ff || (long) value < -0x800) 2192 return bfd_reloc_overflow; 2193 2194 /* The high 6 bits go into bits 17-12. The low 6 bits go into bits 5-0. */ 2195 mask = 0x3f03f; 2196 insn = (insn & ~mask) | ((value & 0xfc0) << 12) | (value & 0x3f); 2197 2198 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); 2199 2200 return bfd_reloc_ok; 2201 } 2202 2203 /* Handle an FRV ELF HI16 reloc. */ 2204 2205 static bfd_reloc_status_type 2206 elf32_frv_relocate_hi16 (bfd *input_bfd, 2207 Elf_Internal_Rela *relhi, 2208 bfd_byte *contents, 2209 bfd_vma value) 2210 { 2211 bfd_vma insn; 2212 2213 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); 2214 2215 value += relhi->r_addend; 2216 value = ((value >> 16) & 0xffff); 2217 2218 insn = (insn & 0xffff0000) | value; 2219 2220 if ((long) value > 0xffff || (long) value < -0x10000) 2221 return bfd_reloc_overflow; 2222 2223 bfd_put_32 (input_bfd, insn, contents + relhi->r_offset); 2224 return bfd_reloc_ok; 2225 2226 } 2227 static bfd_reloc_status_type 2228 elf32_frv_relocate_lo16 (bfd *input_bfd, 2229 Elf_Internal_Rela *rello, 2230 bfd_byte *contents, 2231 bfd_vma value) 2232 { 2233 bfd_vma insn; 2234 2235 insn = bfd_get_32 (input_bfd, contents + rello->r_offset); 2236 2237 value += rello->r_addend; 2238 value = value & 0xffff; 2239 2240 insn = (insn & 0xffff0000) | value; 2241 2242 if ((long) value > 0xffff || (long) value < -0x10000) 2243 return bfd_reloc_overflow; 2244 2245 bfd_put_32 (input_bfd, insn, contents + rello->r_offset); 2246 return bfd_reloc_ok; 2247 } 2248 2249 /* Perform the relocation for the CALL label24 instruction. */ 2250 2251 static bfd_reloc_status_type 2252 elf32_frv_relocate_label24 (bfd *input_bfd, 2253 asection *input_section, 2254 Elf_Internal_Rela *rello, 2255 bfd_byte *contents, 2256 bfd_vma value) 2257 { 2258 bfd_vma insn; 2259 bfd_vma label6; 2260 bfd_vma label18; 2261 2262 /* The format for the call instruction is: 2263 2264 0 000000 0001111 000000000000000000 2265 label6 opcode label18 2266 2267 The branch calculation is: pc + (4*label24) 2268 where label24 is the concatenation of label6 and label18. */ 2269 2270 /* Grab the instruction. */ 2271 insn = bfd_get_32 (input_bfd, contents + rello->r_offset); 2272 2273 value -= input_section->output_section->vma + input_section->output_offset; 2274 value -= rello->r_offset; 2275 value += rello->r_addend; 2276 2277 value = value >> 2; 2278 2279 label6 = value & 0xfc0000; 2280 label6 = label6 << 7; 2281 2282 label18 = value & 0x3ffff; 2283 2284 insn = insn & 0x803c0000; 2285 insn = insn | label6; 2286 insn = insn | label18; 2287 2288 bfd_put_32 (input_bfd, insn, contents + rello->r_offset); 2289 2290 return bfd_reloc_ok; 2291 } 2292 2293 static bfd_reloc_status_type 2294 elf32_frv_relocate_gprelhi (struct bfd_link_info *info, 2295 bfd *input_bfd, 2296 asection *input_section, 2297 Elf_Internal_Rela *relocation, 2298 bfd_byte *contents, 2299 bfd_vma value) 2300 { 2301 bfd_vma insn; 2302 bfd_vma gp; 2303 struct bfd_link_hash_entry *h; 2304 2305 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 2306 2307 gp = (h->u.def.value 2308 + h->u.def.section->output_section->vma 2309 + h->u.def.section->output_offset); 2310 2311 value -= input_section->output_section->vma; 2312 value -= (gp - input_section->output_section->vma); 2313 value += relocation->r_addend; 2314 value = ((value >> 16) & 0xffff); 2315 2316 if ((long) value > 0xffff || (long) value < -0x10000) 2317 return bfd_reloc_overflow; 2318 2319 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 2320 insn = (insn & 0xffff0000) | value; 2321 2322 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); 2323 return bfd_reloc_ok; 2324 } 2325 2326 static bfd_reloc_status_type 2327 elf32_frv_relocate_gprello (struct bfd_link_info *info, 2328 bfd *input_bfd, 2329 asection *input_section, 2330 Elf_Internal_Rela *relocation, 2331 bfd_byte *contents, 2332 bfd_vma value) 2333 { 2334 bfd_vma insn; 2335 bfd_vma gp; 2336 struct bfd_link_hash_entry *h; 2337 2338 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 2339 2340 gp = (h->u.def.value 2341 + h->u.def.section->output_section->vma 2342 + h->u.def.section->output_offset); 2343 2344 value -= input_section->output_section->vma; 2345 value -= (gp - input_section->output_section->vma); 2346 value += relocation->r_addend; 2347 value = value & 0xffff; 2348 2349 if ((long) value > 0xffff || (long) value < -0x10000) 2350 return bfd_reloc_overflow; 2351 2352 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 2353 insn = (insn & 0xffff0000) | value; 2354 2355 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); 2356 2357 return bfd_reloc_ok; 2358 } 2359 2360 static reloc_howto_type * 2361 frv_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, 2362 bfd_reloc_code_real_type code) 2363 { 2364 switch (code) 2365 { 2366 default: 2367 break; 2368 2369 case BFD_RELOC_NONE: 2370 return &elf32_frv_howto_table[ (int) R_FRV_NONE]; 2371 2372 case BFD_RELOC_32: 2373 if (elf_elfheader (abfd)->e_type == ET_EXEC 2374 || elf_elfheader (abfd)->e_type == ET_DYN) 2375 return &elf32_frv_rel_32_howto; 2376 /* Fall through. */ 2377 case BFD_RELOC_CTOR: 2378 return &elf32_frv_howto_table[ (int) R_FRV_32]; 2379 2380 case BFD_RELOC_FRV_LABEL16: 2381 return &elf32_frv_howto_table[ (int) R_FRV_LABEL16]; 2382 2383 case BFD_RELOC_FRV_LABEL24: 2384 return &elf32_frv_howto_table[ (int) R_FRV_LABEL24]; 2385 2386 case BFD_RELOC_FRV_LO16: 2387 return &elf32_frv_howto_table[ (int) R_FRV_LO16]; 2388 2389 case BFD_RELOC_FRV_HI16: 2390 return &elf32_frv_howto_table[ (int) R_FRV_HI16]; 2391 2392 case BFD_RELOC_FRV_GPREL12: 2393 return &elf32_frv_howto_table[ (int) R_FRV_GPREL12]; 2394 2395 case BFD_RELOC_FRV_GPRELU12: 2396 return &elf32_frv_howto_table[ (int) R_FRV_GPRELU12]; 2397 2398 case BFD_RELOC_FRV_GPREL32: 2399 return &elf32_frv_howto_table[ (int) R_FRV_GPREL32]; 2400 2401 case BFD_RELOC_FRV_GPRELHI: 2402 return &elf32_frv_howto_table[ (int) R_FRV_GPRELHI]; 2403 2404 case BFD_RELOC_FRV_GPRELLO: 2405 return &elf32_frv_howto_table[ (int) R_FRV_GPRELLO]; 2406 2407 case BFD_RELOC_FRV_GOT12: 2408 return &elf32_frv_howto_table[ (int) R_FRV_GOT12]; 2409 2410 case BFD_RELOC_FRV_GOTHI: 2411 return &elf32_frv_howto_table[ (int) R_FRV_GOTHI]; 2412 2413 case BFD_RELOC_FRV_GOTLO: 2414 return &elf32_frv_howto_table[ (int) R_FRV_GOTLO]; 2415 2416 case BFD_RELOC_FRV_FUNCDESC: 2417 if (elf_elfheader (abfd)->e_type == ET_EXEC 2418 || elf_elfheader (abfd)->e_type == ET_DYN) 2419 return &elf32_frv_rel_funcdesc_howto; 2420 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC]; 2421 2422 case BFD_RELOC_FRV_FUNCDESC_GOT12: 2423 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOT12]; 2424 2425 case BFD_RELOC_FRV_FUNCDESC_GOTHI: 2426 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTHI]; 2427 2428 case BFD_RELOC_FRV_FUNCDESC_GOTLO: 2429 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTLO]; 2430 2431 case BFD_RELOC_FRV_FUNCDESC_VALUE: 2432 if (elf_elfheader (abfd)->e_type == ET_EXEC 2433 || elf_elfheader (abfd)->e_type == ET_DYN) 2434 return &elf32_frv_rel_funcdesc_value_howto; 2435 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_VALUE]; 2436 2437 case BFD_RELOC_FRV_FUNCDESC_GOTOFF12: 2438 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFF12]; 2439 2440 case BFD_RELOC_FRV_FUNCDESC_GOTOFFHI: 2441 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFHI]; 2442 2443 case BFD_RELOC_FRV_FUNCDESC_GOTOFFLO: 2444 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFLO]; 2445 2446 case BFD_RELOC_FRV_GOTOFF12: 2447 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFF12]; 2448 2449 case BFD_RELOC_FRV_GOTOFFHI: 2450 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFHI]; 2451 2452 case BFD_RELOC_FRV_GOTOFFLO: 2453 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFLO]; 2454 2455 case BFD_RELOC_FRV_GETTLSOFF: 2456 return &elf32_frv_howto_table[ (int) R_FRV_GETTLSOFF]; 2457 2458 case BFD_RELOC_FRV_TLSDESC_VALUE: 2459 if (elf_elfheader (abfd)->e_type == ET_EXEC 2460 || elf_elfheader (abfd)->e_type == ET_DYN) 2461 return &elf32_frv_rel_tlsdesc_value_howto; 2462 return &elf32_frv_howto_table[ (int) R_FRV_TLSDESC_VALUE]; 2463 2464 case BFD_RELOC_FRV_GOTTLSDESC12: 2465 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESC12]; 2466 2467 case BFD_RELOC_FRV_GOTTLSDESCHI: 2468 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESCHI]; 2469 2470 case BFD_RELOC_FRV_GOTTLSDESCLO: 2471 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESCLO]; 2472 2473 case BFD_RELOC_FRV_TLSMOFF12: 2474 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFF12]; 2475 2476 case BFD_RELOC_FRV_TLSMOFFHI: 2477 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFFHI]; 2478 2479 case BFD_RELOC_FRV_TLSMOFFLO: 2480 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFFLO]; 2481 2482 case BFD_RELOC_FRV_GOTTLSOFF12: 2483 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFF12]; 2484 2485 case BFD_RELOC_FRV_GOTTLSOFFHI: 2486 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFFHI]; 2487 2488 case BFD_RELOC_FRV_GOTTLSOFFLO: 2489 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFFLO]; 2490 2491 case BFD_RELOC_FRV_TLSOFF: 2492 if (elf_elfheader (abfd)->e_type == ET_EXEC 2493 || elf_elfheader (abfd)->e_type == ET_DYN) 2494 return &elf32_frv_rel_tlsoff_howto; 2495 return &elf32_frv_howto_table[ (int) R_FRV_TLSOFF]; 2496 2497 case BFD_RELOC_FRV_TLSDESC_RELAX: 2498 return &elf32_frv_howto_table[ (int) R_FRV_TLSDESC_RELAX]; 2499 2500 case BFD_RELOC_FRV_GETTLSOFF_RELAX: 2501 return &elf32_frv_howto_table[ (int) R_FRV_GETTLSOFF_RELAX]; 2502 2503 case BFD_RELOC_FRV_TLSOFF_RELAX: 2504 return &elf32_frv_howto_table[ (int) R_FRV_TLSOFF_RELAX]; 2505 2506 case BFD_RELOC_FRV_TLSMOFF: 2507 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFF]; 2508 2509 case BFD_RELOC_VTABLE_INHERIT: 2510 return &elf32_frv_vtinherit_howto; 2511 2512 case BFD_RELOC_VTABLE_ENTRY: 2513 return &elf32_frv_vtentry_howto; 2514 } 2515 2516 return NULL; 2517 } 2518 2519 static reloc_howto_type * 2520 frv_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) 2521 { 2522 unsigned int i; 2523 2524 for (i = 0; 2525 i < sizeof (elf32_frv_howto_table) / sizeof (elf32_frv_howto_table[0]); 2526 i++) 2527 if (elf32_frv_howto_table[i].name != NULL 2528 && strcasecmp (elf32_frv_howto_table[i].name, r_name) == 0) 2529 return &elf32_frv_howto_table[i]; 2530 2531 if (strcasecmp (elf32_frv_vtinherit_howto.name, r_name) == 0) 2532 return &elf32_frv_vtinherit_howto; 2533 if (strcasecmp (elf32_frv_vtentry_howto.name, r_name) == 0) 2534 return &elf32_frv_vtentry_howto; 2535 2536 return NULL; 2537 } 2538 2539 /* Set the howto pointer for an FRV ELF reloc. */ 2540 2541 static void 2542 frv_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, 2543 arelent *cache_ptr, 2544 Elf_Internal_Rela *dst) 2545 { 2546 unsigned int r_type; 2547 2548 r_type = ELF32_R_TYPE (dst->r_info); 2549 switch (r_type) 2550 { 2551 case R_FRV_GNU_VTINHERIT: 2552 cache_ptr->howto = &elf32_frv_vtinherit_howto; 2553 break; 2554 2555 case R_FRV_GNU_VTENTRY: 2556 cache_ptr->howto = &elf32_frv_vtentry_howto; 2557 break; 2558 2559 default: 2560 if (r_type >= (unsigned int) R_FRV_max) 2561 { 2562 _bfd_error_handler (_("%A: invalid FRV reloc number: %d"), abfd, r_type); 2563 r_type = 0; 2564 } 2565 cache_ptr->howto = & elf32_frv_howto_table [r_type]; 2566 break; 2567 } 2568 } 2569 2570 /* Set the howto pointer for an FRV ELF REL reloc. */ 2571 static void 2572 frvfdpic_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, 2573 arelent *cache_ptr, Elf_Internal_Rela *dst) 2574 { 2575 unsigned int r_type; 2576 2577 r_type = ELF32_R_TYPE (dst->r_info); 2578 switch (r_type) 2579 { 2580 case R_FRV_32: 2581 cache_ptr->howto = &elf32_frv_rel_32_howto; 2582 break; 2583 2584 case R_FRV_FUNCDESC: 2585 cache_ptr->howto = &elf32_frv_rel_funcdesc_howto; 2586 break; 2587 2588 case R_FRV_FUNCDESC_VALUE: 2589 cache_ptr->howto = &elf32_frv_rel_funcdesc_value_howto; 2590 break; 2591 2592 case R_FRV_TLSDESC_VALUE: 2593 cache_ptr->howto = &elf32_frv_rel_tlsdesc_value_howto; 2594 break; 2595 2596 case R_FRV_TLSOFF: 2597 cache_ptr->howto = &elf32_frv_rel_tlsoff_howto; 2598 break; 2599 2600 default: 2601 cache_ptr->howto = NULL; 2602 break; 2603 } 2604 } 2605 2606 /* Perform a single relocation. By default we use the standard BFD 2607 routines, but a few relocs, we have to do them ourselves. */ 2608 2609 static bfd_reloc_status_type 2610 frv_final_link_relocate (reloc_howto_type *howto, 2611 bfd *input_bfd, 2612 asection *input_section, 2613 bfd_byte *contents, 2614 Elf_Internal_Rela *rel, 2615 bfd_vma relocation) 2616 { 2617 return _bfd_final_link_relocate (howto, input_bfd, input_section, 2618 contents, rel->r_offset, relocation, 2619 rel->r_addend); 2620 } 2621 2622 2623 /* Relocate an FRV ELF section. 2624 2625 The RELOCATE_SECTION function is called by the new ELF backend linker 2626 to handle the relocations for a section. 2627 2628 The relocs are always passed as Rela structures; if the section 2629 actually uses Rel structures, the r_addend field will always be 2630 zero. 2631 2632 This function is responsible for adjusting the section contents as 2633 necessary, and (if using Rela relocs and generating a relocatable 2634 output file) adjusting the reloc addend as necessary. 2635 2636 This function does not have to worry about setting the reloc 2637 address or the reloc symbol index. 2638 2639 LOCAL_SYMS is a pointer to the swapped in local symbols. 2640 2641 LOCAL_SECTIONS is an array giving the section in the input file 2642 corresponding to the st_shndx field of each local symbol. 2643 2644 The global hash table entry for the global symbols can be found 2645 via elf_sym_hashes (input_bfd). 2646 2647 When generating relocatable output, this function must handle 2648 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 2649 going to be the section symbol corresponding to the output 2650 section, which means that the addend must be adjusted 2651 accordingly. */ 2652 2653 static bfd_boolean 2654 elf32_frv_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, 2655 struct bfd_link_info *info, 2656 bfd *input_bfd, 2657 asection *input_section, 2658 bfd_byte *contents, 2659 Elf_Internal_Rela *relocs, 2660 Elf_Internal_Sym *local_syms, 2661 asection **local_sections) 2662 { 2663 Elf_Internal_Shdr *symtab_hdr; 2664 struct elf_link_hash_entry **sym_hashes; 2665 Elf_Internal_Rela *rel; 2666 Elf_Internal_Rela *relend; 2667 unsigned isec_segment, got_segment, plt_segment, gprel_segment, tls_segment, 2668 check_segment[2]; 2669 int silence_segment_error = !(info->shared || info->pie); 2670 unsigned long insn; 2671 2672 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; 2673 sym_hashes = elf_sym_hashes (input_bfd); 2674 relend = relocs + input_section->reloc_count; 2675 2676 isec_segment = _frvfdpic_osec_to_segment (output_bfd, 2677 input_section->output_section); 2678 if (IS_FDPIC (output_bfd) && frvfdpic_got_section (info)) 2679 got_segment = _frvfdpic_osec_to_segment (output_bfd, 2680 frvfdpic_got_section (info) 2681 ->output_section); 2682 else 2683 got_segment = -1; 2684 if (IS_FDPIC (output_bfd) && frvfdpic_gotfixup_section (info)) 2685 gprel_segment = _frvfdpic_osec_to_segment (output_bfd, 2686 frvfdpic_gotfixup_section (info) 2687 ->output_section); 2688 else 2689 gprel_segment = -1; 2690 if (IS_FDPIC (output_bfd) && frvfdpic_plt_section (info)) 2691 plt_segment = _frvfdpic_osec_to_segment (output_bfd, 2692 frvfdpic_plt_section (info) 2693 ->output_section); 2694 else 2695 plt_segment = -1; 2696 if (elf_hash_table (info)->tls_sec) 2697 tls_segment = _frvfdpic_osec_to_segment (output_bfd, 2698 elf_hash_table (info)->tls_sec); 2699 else 2700 tls_segment = -1; 2701 2702 for (rel = relocs; rel < relend; rel ++) 2703 { 2704 reloc_howto_type *howto; 2705 unsigned long r_symndx; 2706 Elf_Internal_Sym *sym; 2707 asection *sec; 2708 struct elf_link_hash_entry *h; 2709 bfd_vma relocation; 2710 bfd_reloc_status_type r; 2711 const char *name; 2712 int r_type; 2713 asection *osec; 2714 struct frvfdpic_relocs_info *picrel; 2715 bfd_vma orig_addend = rel->r_addend; 2716 2717 r_type = ELF32_R_TYPE (rel->r_info); 2718 2719 if ( r_type == R_FRV_GNU_VTINHERIT 2720 || r_type == R_FRV_GNU_VTENTRY) 2721 continue; 2722 2723 r_symndx = ELF32_R_SYM (rel->r_info); 2724 howto = elf32_frv_howto_table + ELF32_R_TYPE (rel->r_info); 2725 h = NULL; 2726 sym = NULL; 2727 sec = NULL; 2728 2729 if (r_symndx < symtab_hdr->sh_info) 2730 { 2731 sym = local_syms + r_symndx; 2732 osec = sec = local_sections [r_symndx]; 2733 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2734 2735 name = bfd_elf_string_from_elf_section 2736 (input_bfd, symtab_hdr->sh_link, sym->st_name); 2737 if (name == NULL || name[0] == 0) 2738 name = bfd_section_name (input_bfd, sec); 2739 } 2740 else 2741 { 2742 bfd_boolean warned, ignored; 2743 bfd_boolean unresolved_reloc; 2744 2745 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 2746 r_symndx, symtab_hdr, sym_hashes, 2747 h, sec, relocation, 2748 unresolved_reloc, warned, ignored); 2749 osec = sec; 2750 name = h->root.root.string; 2751 } 2752 2753 if (sec != NULL && discarded_section (sec)) 2754 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 2755 rel, 1, relend, howto, 0, contents); 2756 2757 if (info->relocatable) 2758 continue; 2759 2760 if (r_type != R_FRV_TLSMOFF 2761 && h != NULL 2762 && (h->root.type == bfd_link_hash_defined 2763 || h->root.type == bfd_link_hash_defweak) 2764 && !FRVFDPIC_SYM_LOCAL (info, h)) 2765 { 2766 osec = sec = NULL; 2767 relocation = 0; 2768 } 2769 2770 switch (r_type) 2771 { 2772 case R_FRV_LABEL24: 2773 case R_FRV_32: 2774 if (! IS_FDPIC (output_bfd)) 2775 goto non_fdpic; 2776 2777 case R_FRV_GOT12: 2778 case R_FRV_GOTHI: 2779 case R_FRV_GOTLO: 2780 case R_FRV_FUNCDESC_GOT12: 2781 case R_FRV_FUNCDESC_GOTHI: 2782 case R_FRV_FUNCDESC_GOTLO: 2783 case R_FRV_GOTOFF12: 2784 case R_FRV_GOTOFFHI: 2785 case R_FRV_GOTOFFLO: 2786 case R_FRV_FUNCDESC_GOTOFF12: 2787 case R_FRV_FUNCDESC_GOTOFFHI: 2788 case R_FRV_FUNCDESC_GOTOFFLO: 2789 case R_FRV_FUNCDESC: 2790 case R_FRV_FUNCDESC_VALUE: 2791 case R_FRV_GETTLSOFF: 2792 case R_FRV_TLSDESC_VALUE: 2793 case R_FRV_GOTTLSDESC12: 2794 case R_FRV_GOTTLSDESCHI: 2795 case R_FRV_GOTTLSDESCLO: 2796 case R_FRV_TLSMOFF12: 2797 case R_FRV_TLSMOFFHI: 2798 case R_FRV_TLSMOFFLO: 2799 case R_FRV_GOTTLSOFF12: 2800 case R_FRV_GOTTLSOFFHI: 2801 case R_FRV_GOTTLSOFFLO: 2802 case R_FRV_TLSOFF: 2803 case R_FRV_TLSDESC_RELAX: 2804 case R_FRV_GETTLSOFF_RELAX: 2805 case R_FRV_TLSOFF_RELAX: 2806 case R_FRV_TLSMOFF: 2807 if (h != NULL) 2808 picrel = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info 2809 (info), input_bfd, h, 2810 orig_addend, INSERT); 2811 else 2812 /* In order to find the entry we created before, we must 2813 use the original addend, not the one that may have been 2814 modified by _bfd_elf_rela_local_sym(). */ 2815 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info 2816 (info), input_bfd, r_symndx, 2817 orig_addend, INSERT); 2818 if (! picrel) 2819 return FALSE; 2820 2821 if (!_frvfdpic_emit_got_relocs_plt_entries (picrel, output_bfd, info, 2822 osec, sym, 2823 rel->r_addend)) 2824 { 2825 info->callbacks->einfo 2826 (_("%H: relocation to `%s+%v'" 2827 " may have caused the error above\n"), 2828 input_bfd, input_section, rel->r_offset, name, rel->r_addend); 2829 return FALSE; 2830 } 2831 2832 break; 2833 2834 default: 2835 non_fdpic: 2836 picrel = NULL; 2837 if (h 2838 && ! FRVFDPIC_SYM_LOCAL (info, h) 2839 && _bfd_elf_section_offset (output_bfd, info, input_section, 2840 rel->r_offset) != (bfd_vma) -1) 2841 { 2842 info->callbacks->einfo 2843 (_("%H: relocation references symbol" 2844 " not defined in the module\n"), 2845 input_bfd, input_section, rel->r_offset); 2846 return FALSE; 2847 } 2848 break; 2849 } 2850 2851 switch (r_type) 2852 { 2853 case R_FRV_GETTLSOFF: 2854 case R_FRV_TLSDESC_VALUE: 2855 case R_FRV_GOTTLSDESC12: 2856 case R_FRV_GOTTLSDESCHI: 2857 case R_FRV_GOTTLSDESCLO: 2858 case R_FRV_TLSMOFF12: 2859 case R_FRV_TLSMOFFHI: 2860 case R_FRV_TLSMOFFLO: 2861 case R_FRV_GOTTLSOFF12: 2862 case R_FRV_GOTTLSOFFHI: 2863 case R_FRV_GOTTLSOFFLO: 2864 case R_FRV_TLSOFF: 2865 case R_FRV_TLSDESC_RELAX: 2866 case R_FRV_GETTLSOFF_RELAX: 2867 case R_FRV_TLSOFF_RELAX: 2868 case R_FRV_TLSMOFF: 2869 if (sec && (bfd_is_abs_section (sec) || bfd_is_und_section (sec))) 2870 relocation += tls_biased_base (info); 2871 break; 2872 2873 default: 2874 break; 2875 } 2876 2877 /* Try to apply TLS relaxations. */ 2878 if (1) 2879 switch (r_type) 2880 { 2881 2882 #define LOCAL_EXEC_P(info, picrel) \ 2883 ((info)->executable \ 2884 && (picrel->symndx != -1 || FRVFDPIC_SYM_LOCAL ((info), (picrel)->d.h))) 2885 #define INITIAL_EXEC_P(info, picrel) \ 2886 (((info)->executable || (info)->flags & DF_STATIC_TLS) \ 2887 && (picrel)->tlsoff_entry) 2888 2889 #define IN_RANGE_FOR_OFST12_P(value) \ 2890 ((bfd_vma)((value) + 2048) < (bfd_vma)4096) 2891 #define IN_RANGE_FOR_SETLOS_P(value) \ 2892 ((bfd_vma)((value) + 32768) < (bfd_vma)65536) 2893 #define TLSMOFF_IN_RANGE_FOR_SETLOS_P(value, info) \ 2894 (IN_RANGE_FOR_SETLOS_P ((value) - tls_biased_base (info))) 2895 2896 #define RELAX_GETTLSOFF_LOCAL_EXEC_P(info, picrel, value) \ 2897 (LOCAL_EXEC_P ((info), (picrel)) \ 2898 && TLSMOFF_IN_RANGE_FOR_SETLOS_P((value), (info))) 2899 #define RELAX_GETTLSOFF_INITIAL_EXEC_P(info, picrel) \ 2900 (INITIAL_EXEC_P ((info), (picrel)) \ 2901 && IN_RANGE_FOR_OFST12_P ((picrel)->tlsoff_entry)) 2902 2903 #define RELAX_TLSDESC_LOCAL_EXEC_P(info, picrel, value) \ 2904 (LOCAL_EXEC_P ((info), (picrel))) 2905 #define RELAX_TLSDESC_INITIAL_EXEC_P(info, picrel) \ 2906 (INITIAL_EXEC_P ((info), (picrel))) 2907 2908 #define RELAX_GOTTLSOFF_LOCAL_EXEC_P(info, picrel, value) \ 2909 (LOCAL_EXEC_P ((info), (picrel)) \ 2910 && TLSMOFF_IN_RANGE_FOR_SETLOS_P((value), (info))) 2911 2912 case R_FRV_GETTLSOFF: 2913 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 2914 2915 /* Is this a call instruction? */ 2916 if ((insn & (unsigned long)0x01fc0000) != 0x003c0000) 2917 { 2918 info->callbacks->einfo 2919 (_("%H: R_FRV_GETTLSOFF not applied to a call instruction\n"), 2920 input_bfd, input_section, rel->r_offset); 2921 return FALSE; 2922 } 2923 2924 if (RELAX_GETTLSOFF_LOCAL_EXEC_P (info, picrel, 2925 relocation + rel->r_addend)) 2926 { 2927 /* Replace the call instruction (except the packing bit) 2928 with setlos #tlsmofflo(symbol+offset), gr9. */ 2929 insn &= (unsigned long)0x80000000; 2930 insn |= (unsigned long)0x12fc0000; 2931 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 2932 2933 r_type = R_FRV_TLSMOFFLO; 2934 howto = elf32_frv_howto_table + r_type; 2935 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 2936 } 2937 2938 else if (RELAX_GETTLSOFF_INITIAL_EXEC_P (info, picrel)) 2939 { 2940 /* Replace the call instruction (except the packing bit) 2941 with ldi @(gr15, #gottlsoff12(symbol+addend)), gr9. */ 2942 insn &= (unsigned long)0x80000000; 2943 insn |= (unsigned long)0x12c8f000; 2944 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 2945 2946 r_type = R_FRV_GOTTLSOFF12; 2947 howto = elf32_frv_howto_table + r_type; 2948 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 2949 } 2950 2951 break; 2952 2953 case R_FRV_GOTTLSDESC12: 2954 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 2955 2956 /* Is this an lddi instruction? */ 2957 if ((insn & (unsigned long)0x01fc0000) != 0x00cc0000) 2958 { 2959 info->callbacks->einfo 2960 (_("%H: R_FRV_GOTTLSDESC12" 2961 " not applied to an lddi instruction\n"), 2962 input_bfd, input_section, rel->r_offset); 2963 return FALSE; 2964 } 2965 2966 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 2967 relocation + rel->r_addend) 2968 && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 2969 info)) 2970 { 2971 /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC 2972 with setlos #tlsmofflo(symbol+offset), gr<C+1>. 2973 Preserve the packing bit. */ 2974 insn = (insn & (unsigned long)0x80000000) 2975 | ((insn + (unsigned long)0x02000000) 2976 & (unsigned long)0x7e000000); 2977 insn |= (unsigned long)0x00fc0000; 2978 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 2979 2980 r_type = R_FRV_TLSMOFFLO; 2981 howto = elf32_frv_howto_table + r_type; 2982 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 2983 } 2984 2985 else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 2986 relocation + rel->r_addend)) 2987 { 2988 /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC 2989 with sethi #tlsmoffhi(symbol+offset), gr<C+1>. 2990 Preserve the packing bit. */ 2991 insn = (insn & (unsigned long)0x80000000) 2992 | ((insn + (unsigned long)0x02000000) 2993 & (unsigned long)0x7e000000); 2994 insn |= (unsigned long)0x00f80000; 2995 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 2996 2997 r_type = R_FRV_TLSMOFFHI; 2998 howto = elf32_frv_howto_table + r_type; 2999 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3000 } 3001 3002 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3003 { 3004 /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC 3005 with ldi @(grB, #gottlsoff12(symbol+offset), 3006 gr<C+1>. Preserve the packing bit. If gottlsoff12 3007 overflows, we'll error out, but that's sort-of ok, 3008 since we'd started with gottlsdesc12, that's actually 3009 more demanding. Compiling with -fPIE instead of 3010 -fpie would fix it; linking with --relax should fix 3011 it as well. */ 3012 insn = (insn & (unsigned long)0x80cbf000) 3013 | ((insn + (unsigned long)0x02000000) 3014 & (unsigned long)0x7e000000); 3015 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3016 3017 r_type = R_FRV_GOTTLSOFF12; 3018 howto = elf32_frv_howto_table + r_type; 3019 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3020 } 3021 3022 break; 3023 3024 case R_FRV_GOTTLSDESCHI: 3025 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3026 3027 /* Is this a sethi instruction? */ 3028 if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) 3029 { 3030 info->callbacks->einfo 3031 (_("%H: R_FRV_GOTTLSDESCHI" 3032 " not applied to a sethi instruction\n"), 3033 input_bfd, input_section, rel->r_offset); 3034 return FALSE; 3035 } 3036 3037 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3038 relocation + rel->r_addend) 3039 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3040 && IN_RANGE_FOR_SETLOS_P (picrel->tlsoff_entry))) 3041 { 3042 /* Replace sethi with a nop. Preserve the packing bit. */ 3043 insn &= (unsigned long)0x80000000; 3044 insn |= (unsigned long)0x00880000; 3045 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3046 3047 /* Nothing to relocate. */ 3048 continue; 3049 } 3050 3051 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3052 { 3053 /* Simply decay GOTTLSDESC to GOTTLSOFF. */ 3054 r_type = R_FRV_GOTTLSOFFHI; 3055 howto = elf32_frv_howto_table + r_type; 3056 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3057 } 3058 3059 break; 3060 3061 case R_FRV_GOTTLSDESCLO: 3062 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3063 3064 /* Is this a setlo or setlos instruction? */ 3065 if ((insn & (unsigned long)0x01f70000) != 0x00f40000) 3066 { 3067 info->callbacks->einfo 3068 (_("%H: R_FRV_GOTTLSDESCLO" 3069 " not applied to a setlo or setlos instruction\n"), 3070 input_bfd, input_section, rel->r_offset); 3071 return FALSE; 3072 } 3073 3074 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3075 relocation + rel->r_addend) 3076 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3077 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) 3078 { 3079 /* Replace setlo/setlos with a nop. Preserve the 3080 packing bit. */ 3081 insn &= (unsigned long)0x80000000; 3082 insn |= (unsigned long)0x00880000; 3083 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3084 3085 /* Nothing to relocate. */ 3086 continue; 3087 } 3088 3089 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3090 { 3091 /* If the corresponding sethi (if it exists) decayed 3092 to a nop, make sure this becomes (or already is) a 3093 setlos, not setlo. */ 3094 if (IN_RANGE_FOR_SETLOS_P (picrel->tlsoff_entry)) 3095 { 3096 insn |= (unsigned long)0x00080000; 3097 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3098 } 3099 3100 /* Simply decay GOTTLSDESC to GOTTLSOFF. */ 3101 r_type = R_FRV_GOTTLSOFFLO; 3102 howto = elf32_frv_howto_table + r_type; 3103 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3104 } 3105 3106 break; 3107 3108 case R_FRV_TLSDESC_RELAX: 3109 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3110 3111 /* Is this an ldd instruction? */ 3112 if ((insn & (unsigned long)0x01fc0fc0) != 0x00080140) 3113 { 3114 info->callbacks->einfo 3115 (_("%H: R_FRV_TLSDESC_RELAX" 3116 " not applied to an ldd instruction\n"), 3117 input_bfd, input_section, rel->r_offset); 3118 return FALSE; 3119 } 3120 3121 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3122 relocation + rel->r_addend) 3123 && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 3124 info)) 3125 { 3126 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC 3127 with setlos #tlsmofflo(symbol+offset), gr<C+1>. 3128 Preserve the packing bit. */ 3129 insn = (insn & (unsigned long)0x80000000) 3130 | ((insn + (unsigned long)0x02000000) 3131 & (unsigned long)0x7e000000); 3132 insn |= (unsigned long)0x00fc0000; 3133 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3134 3135 r_type = R_FRV_TLSMOFFLO; 3136 howto = elf32_frv_howto_table + r_type; 3137 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3138 } 3139 3140 else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3141 relocation + rel->r_addend)) 3142 { 3143 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC 3144 with sethi #tlsmoffhi(symbol+offset), gr<C+1>. 3145 Preserve the packing bit. */ 3146 insn = (insn & (unsigned long)0x80000000) 3147 | ((insn + (unsigned long)0x02000000) 3148 & (unsigned long)0x7e000000); 3149 insn |= (unsigned long)0x00f80000; 3150 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3151 3152 r_type = R_FRV_TLSMOFFHI; 3153 howto = elf32_frv_howto_table + r_type; 3154 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3155 } 3156 3157 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3158 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry)) 3159 { 3160 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC 3161 with ldi @(grB, #gottlsoff12(symbol+offset), gr<C+1>. 3162 Preserve the packing bit. */ 3163 insn = (insn & (unsigned long)0x8003f000) 3164 | (unsigned long)0x00c80000 3165 | ((insn + (unsigned long)0x02000000) 3166 & (unsigned long)0x7e000000); 3167 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3168 3169 r_type = R_FRV_GOTTLSOFF12; 3170 howto = elf32_frv_howto_table + r_type; 3171 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3172 } 3173 3174 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3175 { 3176 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC 3177 with ld #tlsoff(symbol+offset)@(grB, grA), gr<C+1>. 3178 Preserve the packing bit. */ 3179 insn = (insn & (unsigned long)0x81ffffbf) 3180 | ((insn + (unsigned long)0x02000000) 3181 & (unsigned long)0x7e000000); 3182 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3183 3184 /* #tlsoff(symbol+offset) is just a relaxation 3185 annotation, so there's nothing left to 3186 relocate. */ 3187 continue; 3188 } 3189 3190 break; 3191 3192 case R_FRV_GETTLSOFF_RELAX: 3193 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3194 3195 /* Is this a calll or callil instruction? */ 3196 if ((insn & (unsigned long)0x7ff80fc0) != 0x02300000) 3197 { 3198 info->callbacks->einfo 3199 (_("%H: R_FRV_GETTLSOFF_RELAX" 3200 " not applied to a calll instruction\n"), 3201 input_bfd, input_section, rel->r_offset); 3202 return FALSE; 3203 } 3204 3205 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3206 relocation + rel->r_addend) 3207 && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 3208 info)) 3209 { 3210 /* Replace calll with a nop. Preserve the packing bit. */ 3211 insn &= (unsigned long)0x80000000; 3212 insn |= (unsigned long)0x00880000; 3213 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3214 3215 /* Nothing to relocate. */ 3216 continue; 3217 } 3218 3219 else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3220 relocation + rel->r_addend)) 3221 { 3222 /* Replace calll with setlo #tlsmofflo(symbol+offset), gr9. 3223 Preserve the packing bit. */ 3224 insn &= (unsigned long)0x80000000; 3225 insn |= (unsigned long)0x12f40000; 3226 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3227 3228 r_type = R_FRV_TLSMOFFLO; 3229 howto = elf32_frv_howto_table + r_type; 3230 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3231 } 3232 3233 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3234 { 3235 /* Replace calll with a nop. Preserve the packing bit. */ 3236 insn &= (unsigned long)0x80000000; 3237 insn |= (unsigned long)0x00880000; 3238 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3239 3240 /* Nothing to relocate. */ 3241 continue; 3242 } 3243 3244 break; 3245 3246 case R_FRV_GOTTLSOFF12: 3247 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3248 3249 /* Is this an ldi instruction? */ 3250 if ((insn & (unsigned long)0x01fc0000) != 0x00c80000) 3251 { 3252 info->callbacks->einfo 3253 (_("%H: R_FRV_GOTTLSOFF12" 3254 " not applied to an ldi instruction\n"), 3255 input_bfd, input_section, rel->r_offset); 3256 return FALSE; 3257 } 3258 3259 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, 3260 relocation + rel->r_addend)) 3261 { 3262 /* Replace ldi @(grB, #gottlsoff12(symbol+offset), grC 3263 with setlos #tlsmofflo(symbol+offset), grC. 3264 Preserve the packing bit. */ 3265 insn &= (unsigned long)0xfe000000; 3266 insn |= (unsigned long)0x00fc0000; 3267 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3268 3269 r_type = R_FRV_TLSMOFFLO; 3270 howto = elf32_frv_howto_table + r_type; 3271 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3272 } 3273 3274 break; 3275 3276 case R_FRV_GOTTLSOFFHI: 3277 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3278 3279 /* Is this a sethi instruction? */ 3280 if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) 3281 { 3282 info->callbacks->einfo 3283 (_("%H: R_FRV_GOTTLSOFFHI" 3284 " not applied to a sethi instruction\n"), 3285 input_bfd, input_section, rel->r_offset); 3286 return FALSE; 3287 } 3288 3289 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, 3290 relocation + rel->r_addend) 3291 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3292 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) 3293 { 3294 /* Replace sethi with a nop. Preserve the packing bit. */ 3295 insn &= (unsigned long)0x80000000; 3296 insn |= (unsigned long)0x00880000; 3297 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3298 3299 /* Nothing to relocate. */ 3300 continue; 3301 } 3302 3303 break; 3304 3305 case R_FRV_GOTTLSOFFLO: 3306 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3307 3308 /* Is this a setlo or setlos instruction? */ 3309 if ((insn & (unsigned long)0x01f70000) != 0x00f40000) 3310 { 3311 info->callbacks->einfo 3312 (_("%H: R_FRV_GOTTLSOFFLO" 3313 " not applied to a setlo or setlos instruction\n"), 3314 input_bfd, input_section, rel->r_offset); 3315 return FALSE; 3316 } 3317 3318 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, 3319 relocation + rel->r_addend) 3320 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3321 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) 3322 { 3323 /* Replace setlo/setlos with a nop. Preserve the 3324 packing bit. */ 3325 insn &= (unsigned long)0x80000000; 3326 insn |= (unsigned long)0x00880000; 3327 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3328 3329 /* Nothing to relocate. */ 3330 continue; 3331 } 3332 3333 break; 3334 3335 case R_FRV_TLSOFF_RELAX: 3336 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3337 3338 /* Is this an ld instruction? */ 3339 if ((insn & (unsigned long)0x01fc0fc0) != 0x00080100) 3340 { 3341 info->callbacks->einfo 3342 (_("%H: R_FRV_TLSOFF_RELAX" 3343 " not applied to an ld instruction\n"), 3344 input_bfd, input_section, rel->r_offset); 3345 return FALSE; 3346 } 3347 3348 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, 3349 relocation + rel->r_addend)) 3350 { 3351 /* Replace ld #gottlsoff(symbol+offset)@(grB, grA), grC 3352 with setlos #tlsmofflo(symbol+offset), grC. 3353 Preserve the packing bit. */ 3354 insn &= (unsigned long)0xfe000000; 3355 insn |= (unsigned long)0x00fc0000; 3356 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3357 3358 r_type = R_FRV_TLSMOFFLO; 3359 howto = elf32_frv_howto_table + r_type; 3360 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3361 } 3362 3363 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3364 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry)) 3365 { 3366 /* Replace ld #tlsoff(symbol+offset)@(grB, grA), grC 3367 with ldi @(grB, #gottlsoff12(symbol+offset), grC. 3368 Preserve the packing bit. */ 3369 insn = (insn & (unsigned long)0xfe03f000) 3370 | (unsigned long)0x00c80000; 3371 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3372 3373 r_type = R_FRV_GOTTLSOFF12; 3374 howto = elf32_frv_howto_table + r_type; 3375 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3376 } 3377 3378 break; 3379 3380 case R_FRV_TLSMOFFHI: 3381 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3382 3383 /* Is this a sethi instruction? */ 3384 if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) 3385 { 3386 info->callbacks->einfo 3387 (_("%H: R_FRV_TLSMOFFHI" 3388 " not applied to a sethi instruction\n"), 3389 input_bfd, input_section, rel->r_offset); 3390 return FALSE; 3391 } 3392 3393 if (TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 3394 info)) 3395 { 3396 /* Replace sethi with a nop. Preserve the packing bit. */ 3397 insn &= (unsigned long)0x80000000; 3398 insn |= (unsigned long)0x00880000; 3399 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3400 3401 /* Nothing to relocate. */ 3402 continue; 3403 } 3404 3405 break; 3406 3407 case R_FRV_TLSMOFFLO: 3408 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3409 3410 /* Is this a setlo or setlos instruction? */ 3411 if ((insn & (unsigned long)0x01f70000) != 0x00f40000) 3412 { 3413 info->callbacks->einfo 3414 (_("R_FRV_TLSMOFFLO" 3415 " not applied to a setlo or setlos instruction\n"), 3416 input_bfd, input_section, rel->r_offset); 3417 return FALSE; 3418 } 3419 3420 if (TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 3421 info)) 3422 /* If the corresponding sethi (if it exists) decayed 3423 to a nop, make sure this becomes (or already is) a 3424 setlos, not setlo. */ 3425 { 3426 insn |= (unsigned long)0x00080000; 3427 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3428 } 3429 3430 break; 3431 3432 /* 3433 There's nothing to relax in these: 3434 R_FRV_TLSDESC_VALUE 3435 R_FRV_TLSOFF 3436 R_FRV_TLSMOFF12 3437 R_FRV_TLSMOFFHI 3438 R_FRV_TLSMOFFLO 3439 R_FRV_TLSMOFF 3440 */ 3441 3442 default: 3443 break; 3444 } 3445 3446 switch (r_type) 3447 { 3448 case R_FRV_LABEL24: 3449 check_segment[0] = isec_segment; 3450 if (! IS_FDPIC (output_bfd)) 3451 check_segment[1] = isec_segment; 3452 else if (picrel->plt) 3453 { 3454 relocation = frvfdpic_plt_section (info)->output_section->vma 3455 + frvfdpic_plt_section (info)->output_offset 3456 + picrel->plt_entry; 3457 check_segment[1] = plt_segment; 3458 } 3459 /* We don't want to warn on calls to undefined weak symbols, 3460 as calls to them must be protected by non-NULL tests 3461 anyway, and unprotected calls would invoke undefined 3462 behavior. */ 3463 else if (picrel->symndx == -1 3464 && picrel->d.h->root.type == bfd_link_hash_undefweak) 3465 check_segment[1] = check_segment[0]; 3466 else 3467 check_segment[1] = sec 3468 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3469 : (unsigned)-1; 3470 break; 3471 3472 case R_FRV_GOT12: 3473 case R_FRV_GOTHI: 3474 case R_FRV_GOTLO: 3475 relocation = picrel->got_entry; 3476 check_segment[0] = check_segment[1] = got_segment; 3477 break; 3478 3479 case R_FRV_FUNCDESC_GOT12: 3480 case R_FRV_FUNCDESC_GOTHI: 3481 case R_FRV_FUNCDESC_GOTLO: 3482 relocation = picrel->fdgot_entry; 3483 check_segment[0] = check_segment[1] = got_segment; 3484 break; 3485 3486 case R_FRV_GOTOFFHI: 3487 case R_FRV_GOTOFF12: 3488 case R_FRV_GOTOFFLO: 3489 relocation -= frvfdpic_got_section (info)->output_section->vma 3490 + frvfdpic_got_section (info)->output_offset 3491 + frvfdpic_got_initial_offset (info); 3492 check_segment[0] = got_segment; 3493 check_segment[1] = sec 3494 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3495 : (unsigned)-1; 3496 break; 3497 3498 case R_FRV_FUNCDESC_GOTOFF12: 3499 case R_FRV_FUNCDESC_GOTOFFHI: 3500 case R_FRV_FUNCDESC_GOTOFFLO: 3501 relocation = picrel->fd_entry; 3502 check_segment[0] = check_segment[1] = got_segment; 3503 break; 3504 3505 case R_FRV_FUNCDESC: 3506 { 3507 int dynindx; 3508 bfd_vma addend = rel->r_addend; 3509 3510 if (! (h && h->root.type == bfd_link_hash_undefweak 3511 && FRVFDPIC_SYM_LOCAL (info, h))) 3512 { 3513 /* If the symbol is dynamic and there may be dynamic 3514 symbol resolution because we are or are linked with a 3515 shared library, emit a FUNCDESC relocation such that 3516 the dynamic linker will allocate the function 3517 descriptor. If the symbol needs a non-local function 3518 descriptor but binds locally (e.g., its visibility is 3519 protected, emit a dynamic relocation decayed to 3520 section+offset. */ 3521 if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h) 3522 && FRVFDPIC_SYM_LOCAL (info, h) 3523 && !(info->executable && !info->pie)) 3524 { 3525 dynindx = elf_section_data (h->root.u.def.section 3526 ->output_section)->dynindx; 3527 addend += h->root.u.def.section->output_offset 3528 + h->root.u.def.value; 3529 } 3530 else if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h)) 3531 { 3532 if (addend) 3533 { 3534 info->callbacks->einfo 3535 (_("%H: R_FRV_FUNCDESC references dynamic symbol" 3536 " with nonzero addend\n"), 3537 input_bfd, input_section, rel->r_offset); 3538 return FALSE; 3539 } 3540 dynindx = h->dynindx; 3541 } 3542 else 3543 { 3544 /* Otherwise, we know we have a private function 3545 descriptor, so reference it directly. */ 3546 BFD_ASSERT (picrel->privfd); 3547 r_type = R_FRV_32; 3548 dynindx = elf_section_data (frvfdpic_got_section (info) 3549 ->output_section)->dynindx; 3550 addend = frvfdpic_got_section (info)->output_offset 3551 + frvfdpic_got_initial_offset (info) 3552 + picrel->fd_entry; 3553 } 3554 3555 /* If there is room for dynamic symbol resolution, emit 3556 the dynamic relocation. However, if we're linking an 3557 executable at a fixed location, we won't have emitted a 3558 dynamic symbol entry for the got section, so idx will 3559 be zero, which means we can and should compute the 3560 address of the private descriptor ourselves. */ 3561 if (info->executable && !info->pie 3562 && (!h || FRVFDPIC_FUNCDESC_LOCAL (info, h))) 3563 { 3564 addend += frvfdpic_got_section (info)->output_section->vma; 3565 if ((bfd_get_section_flags (output_bfd, 3566 input_section->output_section) 3567 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 3568 { 3569 bfd_vma offset; 3570 3571 if (_frvfdpic_osec_readonly_p (output_bfd, 3572 input_section 3573 ->output_section)) 3574 { 3575 info->callbacks->einfo 3576 (_("%H: cannot emit fixups" 3577 " in read-only section\n"), 3578 input_bfd, input_section, rel->r_offset); 3579 return FALSE; 3580 } 3581 3582 offset = _bfd_elf_section_offset 3583 (output_bfd, info, 3584 input_section, rel->r_offset); 3585 3586 if (offset != (bfd_vma)-1) 3587 _frvfdpic_add_rofixup (output_bfd, 3588 frvfdpic_gotfixup_section 3589 (info), 3590 offset + input_section 3591 ->output_section->vma 3592 + input_section->output_offset, 3593 picrel); 3594 } 3595 } 3596 else if ((bfd_get_section_flags (output_bfd, 3597 input_section->output_section) 3598 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 3599 { 3600 bfd_vma offset; 3601 3602 if (_frvfdpic_osec_readonly_p (output_bfd, 3603 input_section 3604 ->output_section)) 3605 { 3606 info->callbacks->einfo 3607 (_("%H: cannot emit dynamic relocations" 3608 " in read-only section\n"), 3609 input_bfd, input_section, rel->r_offset); 3610 return FALSE; 3611 } 3612 3613 offset = _bfd_elf_section_offset 3614 (output_bfd, info, 3615 input_section, rel->r_offset); 3616 3617 if (offset != (bfd_vma)-1) 3618 _frvfdpic_add_dyn_reloc (output_bfd, 3619 frvfdpic_gotrel_section (info), 3620 offset + input_section 3621 ->output_section->vma 3622 + input_section->output_offset, 3623 r_type, dynindx, addend, picrel); 3624 } 3625 else 3626 addend += frvfdpic_got_section (info)->output_section->vma; 3627 } 3628 3629 /* We want the addend in-place because dynamic 3630 relocations are REL. Setting relocation to it should 3631 arrange for it to be installed. */ 3632 relocation = addend - rel->r_addend; 3633 } 3634 check_segment[0] = check_segment[1] = got_segment; 3635 break; 3636 3637 case R_FRV_32: 3638 if (! IS_FDPIC (output_bfd)) 3639 { 3640 check_segment[0] = check_segment[1] = -1; 3641 break; 3642 } 3643 /* Fall through. */ 3644 case R_FRV_FUNCDESC_VALUE: 3645 { 3646 int dynindx; 3647 bfd_vma addend = rel->r_addend; 3648 3649 /* If the symbol is dynamic but binds locally, use 3650 section+offset. */ 3651 if (h && ! FRVFDPIC_SYM_LOCAL (info, h)) 3652 { 3653 if (addend && r_type == R_FRV_FUNCDESC_VALUE) 3654 { 3655 info->callbacks->einfo 3656 (_("%H: R_FRV_FUNCDESC_VALUE" 3657 " references dynamic symbol with nonzero addend\n"), 3658 input_bfd, input_section, rel->r_offset); 3659 return FALSE; 3660 } 3661 dynindx = h->dynindx; 3662 } 3663 else 3664 { 3665 if (h) 3666 addend += h->root.u.def.value; 3667 else 3668 addend += sym->st_value; 3669 if (osec) 3670 addend += osec->output_offset; 3671 if (osec && osec->output_section 3672 && ! bfd_is_abs_section (osec->output_section) 3673 && ! bfd_is_und_section (osec->output_section)) 3674 dynindx = elf_section_data (osec->output_section)->dynindx; 3675 else 3676 dynindx = 0; 3677 } 3678 3679 /* If we're linking an executable at a fixed address, we 3680 can omit the dynamic relocation as long as the symbol 3681 is defined in the current link unit (which is implied 3682 by its output section not being NULL). */ 3683 if (info->executable && !info->pie 3684 && (!h || FRVFDPIC_SYM_LOCAL (info, h))) 3685 { 3686 if (osec) 3687 addend += osec->output_section->vma; 3688 if (IS_FDPIC (input_bfd) 3689 && (bfd_get_section_flags (output_bfd, 3690 input_section->output_section) 3691 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 3692 { 3693 if (_frvfdpic_osec_readonly_p (output_bfd, 3694 input_section 3695 ->output_section)) 3696 { 3697 info->callbacks->einfo 3698 (_("%H: cannot emit fixups in read-only section\n"), 3699 input_bfd, input_section, rel->r_offset); 3700 return FALSE; 3701 } 3702 if (!h || h->root.type != bfd_link_hash_undefweak) 3703 { 3704 bfd_vma offset = _bfd_elf_section_offset 3705 (output_bfd, info, 3706 input_section, rel->r_offset); 3707 3708 if (offset != (bfd_vma)-1) 3709 { 3710 _frvfdpic_add_rofixup (output_bfd, 3711 frvfdpic_gotfixup_section 3712 (info), 3713 offset + input_section 3714 ->output_section->vma 3715 + input_section->output_offset, 3716 picrel); 3717 if (r_type == R_FRV_FUNCDESC_VALUE) 3718 _frvfdpic_add_rofixup 3719 (output_bfd, 3720 frvfdpic_gotfixup_section (info), 3721 offset 3722 + input_section->output_section->vma 3723 + input_section->output_offset + 4, picrel); 3724 } 3725 } 3726 } 3727 } 3728 else 3729 { 3730 if ((bfd_get_section_flags (output_bfd, 3731 input_section->output_section) 3732 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 3733 { 3734 bfd_vma offset; 3735 3736 if (_frvfdpic_osec_readonly_p (output_bfd, 3737 input_section 3738 ->output_section)) 3739 { 3740 info->callbacks->einfo 3741 (_("%H: cannot emit dynamic relocations" 3742 " in read-only section\n"), 3743 input_bfd, input_section, rel->r_offset); 3744 return FALSE; 3745 } 3746 3747 offset = _bfd_elf_section_offset 3748 (output_bfd, info, 3749 input_section, rel->r_offset); 3750 3751 if (offset != (bfd_vma)-1) 3752 _frvfdpic_add_dyn_reloc (output_bfd, 3753 frvfdpic_gotrel_section (info), 3754 offset + input_section 3755 ->output_section->vma 3756 + input_section->output_offset, 3757 r_type, dynindx, addend, picrel); 3758 } 3759 else if (osec) 3760 addend += osec->output_section->vma; 3761 /* We want the addend in-place because dynamic 3762 relocations are REL. Setting relocation to it 3763 should arrange for it to be installed. */ 3764 relocation = addend - rel->r_addend; 3765 } 3766 3767 if (r_type == R_FRV_FUNCDESC_VALUE) 3768 { 3769 /* If we've omitted the dynamic relocation, just emit 3770 the fixed addresses of the symbol and of the local 3771 GOT base offset. */ 3772 if (info->executable && !info->pie 3773 && (!h || FRVFDPIC_SYM_LOCAL (info, h))) 3774 bfd_put_32 (output_bfd, 3775 frvfdpic_got_section (info)->output_section->vma 3776 + frvfdpic_got_section (info)->output_offset 3777 + frvfdpic_got_initial_offset (info), 3778 contents + rel->r_offset + 4); 3779 else 3780 /* A function descriptor used for lazy or local 3781 resolving is initialized such that its high word 3782 contains the output section index in which the 3783 PLT entries are located, and the low word 3784 contains the offset of the lazy PLT entry entry 3785 point into that section. */ 3786 bfd_put_32 (output_bfd, 3787 h && ! FRVFDPIC_SYM_LOCAL (info, h) 3788 ? 0 3789 : _frvfdpic_osec_to_segment (output_bfd, 3790 sec 3791 ->output_section), 3792 contents + rel->r_offset + 4); 3793 } 3794 } 3795 check_segment[0] = check_segment[1] = got_segment; 3796 break; 3797 3798 case R_FRV_GPREL12: 3799 case R_FRV_GPRELU12: 3800 case R_FRV_GPREL32: 3801 case R_FRV_GPRELHI: 3802 case R_FRV_GPRELLO: 3803 check_segment[0] = gprel_segment; 3804 check_segment[1] = sec 3805 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3806 : (unsigned)-1; 3807 break; 3808 3809 case R_FRV_GETTLSOFF: 3810 relocation = frvfdpic_plt_section (info)->output_section->vma 3811 + frvfdpic_plt_section (info)->output_offset 3812 + picrel->tlsplt_entry; 3813 BFD_ASSERT (picrel->tlsplt_entry != (bfd_vma)-1 3814 && picrel->tlsdesc_entry); 3815 check_segment[0] = isec_segment; 3816 check_segment[1] = plt_segment; 3817 break; 3818 3819 case R_FRV_GOTTLSDESC12: 3820 case R_FRV_GOTTLSDESCHI: 3821 case R_FRV_GOTTLSDESCLO: 3822 BFD_ASSERT (picrel->tlsdesc_entry); 3823 relocation = picrel->tlsdesc_entry; 3824 check_segment[0] = tls_segment; 3825 check_segment[1] = sec 3826 && ! bfd_is_abs_section (sec) 3827 && ! bfd_is_und_section (sec) 3828 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3829 : tls_segment; 3830 break; 3831 3832 case R_FRV_TLSMOFF12: 3833 case R_FRV_TLSMOFFHI: 3834 case R_FRV_TLSMOFFLO: 3835 case R_FRV_TLSMOFF: 3836 check_segment[0] = tls_segment; 3837 if (! sec) 3838 check_segment[1] = -1; 3839 else if (bfd_is_abs_section (sec) 3840 || bfd_is_und_section (sec)) 3841 { 3842 relocation = 0; 3843 check_segment[1] = tls_segment; 3844 } 3845 else if (sec->output_section) 3846 { 3847 relocation -= tls_biased_base (info); 3848 check_segment[1] = 3849 _frvfdpic_osec_to_segment (output_bfd, sec->output_section); 3850 } 3851 else 3852 check_segment[1] = -1; 3853 break; 3854 3855 case R_FRV_GOTTLSOFF12: 3856 case R_FRV_GOTTLSOFFHI: 3857 case R_FRV_GOTTLSOFFLO: 3858 BFD_ASSERT (picrel->tlsoff_entry); 3859 relocation = picrel->tlsoff_entry; 3860 check_segment[0] = tls_segment; 3861 check_segment[1] = sec 3862 && ! bfd_is_abs_section (sec) 3863 && ! bfd_is_und_section (sec) 3864 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3865 : tls_segment; 3866 break; 3867 3868 case R_FRV_TLSDESC_VALUE: 3869 case R_FRV_TLSOFF: 3870 /* These shouldn't be present in input object files. */ 3871 check_segment[0] = check_segment[1] = isec_segment; 3872 break; 3873 3874 case R_FRV_TLSDESC_RELAX: 3875 case R_FRV_GETTLSOFF_RELAX: 3876 case R_FRV_TLSOFF_RELAX: 3877 /* These are just annotations for relaxation, nothing to do 3878 here. */ 3879 continue; 3880 3881 default: 3882 check_segment[0] = isec_segment; 3883 check_segment[1] = sec 3884 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3885 : (unsigned)-1; 3886 break; 3887 } 3888 3889 if (check_segment[0] != check_segment[1] && IS_FDPIC (output_bfd)) 3890 { 3891 /* If you take this out, remove the #error from fdpic-static-6.d 3892 in the ld testsuite. */ 3893 /* This helps catch problems in GCC while we can't do more 3894 than static linking. The idea is to test whether the 3895 input file basename is crt0.o only once. */ 3896 if (silence_segment_error == 1) 3897 silence_segment_error = 3898 (strlen (input_bfd->filename) == 6 3899 && filename_cmp (input_bfd->filename, "crt0.o") == 0) 3900 || (strlen (input_bfd->filename) > 6 3901 && filename_cmp (input_bfd->filename 3902 + strlen (input_bfd->filename) - 7, 3903 "/crt0.o") == 0) 3904 ? -1 : 0; 3905 if (!silence_segment_error 3906 /* We don't want duplicate errors for undefined 3907 symbols. */ 3908 && !(picrel && picrel->symndx == -1 3909 && picrel->d.h->root.type == bfd_link_hash_undefined)) 3910 { 3911 info->callbacks->einfo 3912 (_("%H: reloc against `%s' references a different segment\n"), 3913 input_bfd, input_section, rel->r_offset, name); 3914 } 3915 if (!silence_segment_error && (info->shared || info->pie)) 3916 return FALSE; 3917 elf_elfheader (output_bfd)->e_flags |= EF_FRV_PIC; 3918 } 3919 3920 switch (r_type) 3921 { 3922 case R_FRV_GOTOFFHI: 3923 case R_FRV_TLSMOFFHI: 3924 /* We need the addend to be applied before we shift the 3925 value right. */ 3926 relocation += rel->r_addend; 3927 /* Fall through. */ 3928 case R_FRV_GOTHI: 3929 case R_FRV_FUNCDESC_GOTHI: 3930 case R_FRV_FUNCDESC_GOTOFFHI: 3931 case R_FRV_GOTTLSOFFHI: 3932 case R_FRV_GOTTLSDESCHI: 3933 relocation >>= 16; 3934 /* Fall through. */ 3935 3936 case R_FRV_GOTLO: 3937 case R_FRV_FUNCDESC_GOTLO: 3938 case R_FRV_GOTOFFLO: 3939 case R_FRV_FUNCDESC_GOTOFFLO: 3940 case R_FRV_GOTTLSOFFLO: 3941 case R_FRV_GOTTLSDESCLO: 3942 case R_FRV_TLSMOFFLO: 3943 relocation &= 0xffff; 3944 break; 3945 3946 default: 3947 break; 3948 } 3949 3950 switch (r_type) 3951 { 3952 case R_FRV_LABEL24: 3953 if (! IS_FDPIC (output_bfd) || ! picrel->plt) 3954 break; 3955 /* Fall through. */ 3956 3957 /* When referencing a GOT entry, a function descriptor or a 3958 PLT, we don't want the addend to apply to the reference, 3959 but rather to the referenced symbol. The actual entry 3960 will have already been created taking the addend into 3961 account, so cancel it out here. */ 3962 case R_FRV_GOT12: 3963 case R_FRV_GOTHI: 3964 case R_FRV_GOTLO: 3965 case R_FRV_FUNCDESC_GOT12: 3966 case R_FRV_FUNCDESC_GOTHI: 3967 case R_FRV_FUNCDESC_GOTLO: 3968 case R_FRV_FUNCDESC_GOTOFF12: 3969 case R_FRV_FUNCDESC_GOTOFFHI: 3970 case R_FRV_FUNCDESC_GOTOFFLO: 3971 case R_FRV_GETTLSOFF: 3972 case R_FRV_GOTTLSDESC12: 3973 case R_FRV_GOTTLSDESCHI: 3974 case R_FRV_GOTTLSDESCLO: 3975 case R_FRV_GOTTLSOFF12: 3976 case R_FRV_GOTTLSOFFHI: 3977 case R_FRV_GOTTLSOFFLO: 3978 /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF12 3979 here, since we do want to apply the addend to the others. 3980 Note that we've applied the addend to GOTOFFHI before we 3981 shifted it right. */ 3982 case R_FRV_GOTOFFHI: 3983 case R_FRV_TLSMOFFHI: 3984 relocation -= rel->r_addend; 3985 break; 3986 3987 default: 3988 break; 3989 } 3990 3991 if (r_type == R_FRV_HI16) 3992 r = elf32_frv_relocate_hi16 (input_bfd, rel, contents, relocation); 3993 3994 else if (r_type == R_FRV_LO16) 3995 r = elf32_frv_relocate_lo16 (input_bfd, rel, contents, relocation); 3996 3997 else if (r_type == R_FRV_LABEL24 || r_type == R_FRV_GETTLSOFF) 3998 r = elf32_frv_relocate_label24 (input_bfd, input_section, rel, 3999 contents, relocation); 4000 4001 else if (r_type == R_FRV_GPREL12) 4002 r = elf32_frv_relocate_gprel12 (info, input_bfd, input_section, rel, 4003 contents, relocation); 4004 4005 else if (r_type == R_FRV_GPRELU12) 4006 r = elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, rel, 4007 contents, relocation); 4008 4009 else if (r_type == R_FRV_GPRELLO) 4010 r = elf32_frv_relocate_gprello (info, input_bfd, input_section, rel, 4011 contents, relocation); 4012 4013 else if (r_type == R_FRV_GPRELHI) 4014 r = elf32_frv_relocate_gprelhi (info, input_bfd, input_section, rel, 4015 contents, relocation); 4016 4017 else if (r_type == R_FRV_TLSOFF 4018 || r_type == R_FRV_TLSDESC_VALUE) 4019 r = bfd_reloc_notsupported; 4020 4021 else 4022 r = frv_final_link_relocate (howto, input_bfd, input_section, contents, 4023 rel, relocation); 4024 4025 if (r != bfd_reloc_ok) 4026 { 4027 const char * msg = (const char *) NULL; 4028 4029 switch (r) 4030 { 4031 case bfd_reloc_overflow: 4032 r = info->callbacks->reloc_overflow 4033 (info, (h ? &h->root : NULL), name, howto->name, 4034 (bfd_vma) 0, input_bfd, input_section, rel->r_offset); 4035 break; 4036 4037 case bfd_reloc_undefined: 4038 r = info->callbacks->undefined_symbol 4039 (info, name, input_bfd, input_section, rel->r_offset, TRUE); 4040 break; 4041 4042 case bfd_reloc_outofrange: 4043 msg = _("internal error: out of range error"); 4044 break; 4045 4046 case bfd_reloc_notsupported: 4047 msg = _("internal error: unsupported relocation error"); 4048 break; 4049 4050 case bfd_reloc_dangerous: 4051 msg = _("internal error: dangerous relocation"); 4052 break; 4053 4054 default: 4055 msg = _("internal error: unknown error"); 4056 break; 4057 } 4058 4059 if (msg) 4060 { 4061 info->callbacks->einfo 4062 (_("%H: reloc against `%s': %s\n"), 4063 input_bfd, input_section, rel->r_offset, name, msg); 4064 return FALSE; 4065 } 4066 4067 if (! r) 4068 return FALSE; 4069 } 4070 } 4071 4072 return TRUE; 4073 } 4074 4075 /* Return the section that should be marked against GC for a given 4076 relocation. */ 4077 4078 static asection * 4079 elf32_frv_gc_mark_hook (asection *sec, 4080 struct bfd_link_info *info, 4081 Elf_Internal_Rela *rel, 4082 struct elf_link_hash_entry *h, 4083 Elf_Internal_Sym *sym) 4084 { 4085 if (h != NULL) 4086 switch (ELF32_R_TYPE (rel->r_info)) 4087 { 4088 case R_FRV_GNU_VTINHERIT: 4089 case R_FRV_GNU_VTENTRY: 4090 return NULL; 4091 } 4092 4093 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 4094 } 4095 4096 /* Hook called by the linker routine which adds symbols from an object 4097 file. We use it to put .comm items in .scomm, and not .comm. */ 4098 4099 static bfd_boolean 4100 elf32_frv_add_symbol_hook (bfd *abfd, 4101 struct bfd_link_info *info, 4102 Elf_Internal_Sym *sym, 4103 const char **namep ATTRIBUTE_UNUSED, 4104 flagword *flagsp ATTRIBUTE_UNUSED, 4105 asection **secp, 4106 bfd_vma *valp) 4107 { 4108 if (sym->st_shndx == SHN_COMMON 4109 && !info->relocatable 4110 && (int)sym->st_size <= (int)bfd_get_gp_size (abfd)) 4111 { 4112 /* Common symbols less than or equal to -G nn bytes are 4113 automatically put into .sbss. */ 4114 4115 asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); 4116 4117 if (scomm == NULL) 4118 { 4119 scomm = bfd_make_section_with_flags (abfd, ".scommon", 4120 (SEC_ALLOC 4121 | SEC_IS_COMMON 4122 | SEC_LINKER_CREATED)); 4123 if (scomm == NULL) 4124 return FALSE; 4125 } 4126 4127 *secp = scomm; 4128 *valp = sym->st_size; 4129 } 4130 4131 return TRUE; 4132 } 4133 4134 /* We need dynamic symbols for every section, since segments can 4135 relocate independently. */ 4136 static bfd_boolean 4137 _frvfdpic_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED, 4138 struct bfd_link_info *info 4139 ATTRIBUTE_UNUSED, 4140 asection *p ATTRIBUTE_UNUSED) 4141 { 4142 switch (elf_section_data (p)->this_hdr.sh_type) 4143 { 4144 case SHT_PROGBITS: 4145 case SHT_NOBITS: 4146 /* If sh_type is yet undecided, assume it could be 4147 SHT_PROGBITS/SHT_NOBITS. */ 4148 case SHT_NULL: 4149 return FALSE; 4150 4151 /* There shouldn't be section relative relocations 4152 against any other section. */ 4153 default: 4154 return TRUE; 4155 } 4156 } 4157 4158 /* Create a .got section, as well as its additional info field. This 4159 is almost entirely copied from 4160 elflink.c:_bfd_elf_create_got_section(). */ 4161 4162 static bfd_boolean 4163 _frv_create_got_section (bfd *abfd, struct bfd_link_info *info) 4164 { 4165 flagword flags, pltflags; 4166 asection *s; 4167 struct elf_link_hash_entry *h; 4168 struct bfd_link_hash_entry *bh; 4169 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 4170 int ptralign; 4171 int offset; 4172 4173 /* This function may be called more than once. */ 4174 s = bfd_get_linker_section (abfd, ".got"); 4175 if (s != NULL) 4176 return TRUE; 4177 4178 /* Machine specific: although pointers are 32-bits wide, we want the 4179 GOT to be aligned to a 64-bit boundary, such that function 4180 descriptors in it can be accessed with 64-bit loads and 4181 stores. */ 4182 ptralign = 3; 4183 4184 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 4185 | SEC_LINKER_CREATED); 4186 pltflags = flags; 4187 4188 s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); 4189 if (s == NULL 4190 || !bfd_set_section_alignment (abfd, s, ptralign)) 4191 return FALSE; 4192 4193 if (bed->want_got_plt) 4194 { 4195 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); 4196 if (s == NULL 4197 || !bfd_set_section_alignment (abfd, s, ptralign)) 4198 return FALSE; 4199 } 4200 4201 if (bed->want_got_sym) 4202 { 4203 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got 4204 (or .got.plt) section. We don't do this in the linker script 4205 because we don't want to define the symbol if we are not creating 4206 a global offset table. */ 4207 h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_"); 4208 elf_hash_table (info)->hgot = h; 4209 if (h == NULL) 4210 return FALSE; 4211 4212 /* Machine-specific: we want the symbol for executables as 4213 well. */ 4214 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 4215 return FALSE; 4216 } 4217 4218 /* The first bit of the global offset table is the header. */ 4219 s->size += bed->got_header_size; 4220 4221 /* This is the machine-specific part. Create and initialize section 4222 data for the got. */ 4223 if (IS_FDPIC (abfd)) 4224 { 4225 frvfdpic_got_section (info) = s; 4226 frvfdpic_relocs_info (info) = htab_try_create (1, 4227 frvfdpic_relocs_info_hash, 4228 frvfdpic_relocs_info_eq, 4229 (htab_del) NULL); 4230 if (! frvfdpic_relocs_info (info)) 4231 return FALSE; 4232 4233 s = bfd_make_section_anyway_with_flags (abfd, ".rel.got", 4234 (flags | SEC_READONLY)); 4235 if (s == NULL 4236 || ! bfd_set_section_alignment (abfd, s, 2)) 4237 return FALSE; 4238 4239 frvfdpic_gotrel_section (info) = s; 4240 4241 /* Machine-specific. */ 4242 s = bfd_make_section_anyway_with_flags (abfd, ".rofixup", 4243 (flags | SEC_READONLY)); 4244 if (s == NULL 4245 || ! bfd_set_section_alignment (abfd, s, 2)) 4246 return FALSE; 4247 4248 frvfdpic_gotfixup_section (info) = s; 4249 offset = -2048; 4250 flags = BSF_GLOBAL; 4251 } 4252 else 4253 { 4254 offset = 2048; 4255 flags = BSF_GLOBAL | BSF_WEAK; 4256 } 4257 4258 /* Define _gp in .rofixup, for FDPIC, or .got otherwise. If it 4259 turns out that we're linking with a different linker script, the 4260 linker script will override it. */ 4261 bh = NULL; 4262 if (!(_bfd_generic_link_add_one_symbol 4263 (info, abfd, "_gp", flags, s, offset, (const char *) NULL, FALSE, 4264 bed->collect, &bh))) 4265 return FALSE; 4266 h = (struct elf_link_hash_entry *) bh; 4267 h->def_regular = 1; 4268 h->type = STT_OBJECT; 4269 /* h->other = STV_HIDDEN; */ /* Should we? */ 4270 4271 /* Machine-specific: we want the symbol for executables as well. */ 4272 if (IS_FDPIC (abfd) && ! bfd_elf_link_record_dynamic_symbol (info, h)) 4273 return FALSE; 4274 4275 if (!IS_FDPIC (abfd)) 4276 return TRUE; 4277 4278 /* FDPIC supports Thread Local Storage, and this may require a 4279 procedure linkage table for TLS PLT entries. */ 4280 4281 /* This is mostly copied from 4282 elflink.c:_bfd_elf_create_dynamic_sections(). */ 4283 4284 flags = pltflags; 4285 pltflags |= SEC_CODE; 4286 if (bed->plt_not_loaded) 4287 pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS); 4288 if (bed->plt_readonly) 4289 pltflags |= SEC_READONLY; 4290 4291 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags); 4292 if (s == NULL 4293 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) 4294 return FALSE; 4295 /* FRV-specific: remember it. */ 4296 frvfdpic_plt_section (info) = s; 4297 4298 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the 4299 .plt section. */ 4300 if (bed->want_plt_sym) 4301 { 4302 h = _bfd_elf_define_linkage_sym (abfd, info, s, 4303 "_PROCEDURE_LINKAGE_TABLE_"); 4304 elf_hash_table (info)->hplt = h; 4305 if (h == NULL) 4306 return FALSE; 4307 } 4308 4309 /* FRV-specific: we want rel relocations for the plt. */ 4310 s = bfd_make_section_anyway_with_flags (abfd, ".rel.plt", 4311 flags | SEC_READONLY); 4312 if (s == NULL 4313 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 4314 return FALSE; 4315 /* FRV-specific: remember it. */ 4316 frvfdpic_pltrel_section (info) = s; 4317 4318 return TRUE; 4319 } 4320 4321 /* Make sure the got and plt sections exist, and that our pointers in 4322 the link hash table point to them. */ 4323 4324 static bfd_boolean 4325 elf32_frvfdpic_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 4326 { 4327 /* This is mostly copied from 4328 elflink.c:_bfd_elf_create_dynamic_sections(). */ 4329 flagword flags; 4330 asection *s; 4331 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 4332 4333 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 4334 | SEC_LINKER_CREATED); 4335 4336 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and 4337 .rel[a].bss sections. */ 4338 4339 /* FRV-specific: we want to create the GOT and the PLT in the FRV 4340 way. */ 4341 if (! _frv_create_got_section (abfd, info)) 4342 return FALSE; 4343 4344 /* FRV-specific: make sure we created everything we wanted. */ 4345 BFD_ASSERT (frvfdpic_got_section (info) && frvfdpic_gotrel_section (info) 4346 && frvfdpic_gotfixup_section (info) 4347 && frvfdpic_plt_section (info) 4348 && frvfdpic_pltrel_section (info)); 4349 4350 if (bed->want_dynbss) 4351 { 4352 /* The .dynbss section is a place to put symbols which are defined 4353 by dynamic objects, are referenced by regular objects, and are 4354 not functions. We must allocate space for them in the process 4355 image and use a R_*_COPY reloc to tell the dynamic linker to 4356 initialize them at run time. The linker script puts the .dynbss 4357 section into the .bss section of the final image. */ 4358 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss", 4359 SEC_ALLOC | SEC_LINKER_CREATED); 4360 if (s == NULL) 4361 return FALSE; 4362 4363 /* The .rel[a].bss section holds copy relocs. This section is not 4364 normally needed. We need to create it here, though, so that the 4365 linker will map it to an output section. We can't just create it 4366 only if we need it, because we will not know whether we need it 4367 until we have seen all the input files, and the first time the 4368 main linker code calls BFD after examining all the input files 4369 (size_dynamic_sections) the input sections have already been 4370 mapped to the output sections. If the section turns out not to 4371 be needed, we can discard it later. We will never need this 4372 section when generating a shared object, since they do not use 4373 copy relocs. */ 4374 if (! info->shared) 4375 { 4376 s = bfd_make_section_anyway_with_flags (abfd, 4377 (bed->default_use_rela_p 4378 ? ".rela.bss" : ".rel.bss"), 4379 flags | SEC_READONLY); 4380 if (s == NULL 4381 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 4382 return FALSE; 4383 } 4384 } 4385 4386 return TRUE; 4387 } 4388 4389 /* Compute the total GOT and PLT size required by each symbol in each 4390 range. Symbols may require up to 4 words in the GOT: an entry 4391 pointing to the symbol, an entry pointing to its function 4392 descriptor, and a private function descriptors taking two 4393 words. */ 4394 4395 static void 4396 _frvfdpic_count_nontls_entries (struct frvfdpic_relocs_info *entry, 4397 struct _frvfdpic_dynamic_got_info *dinfo) 4398 { 4399 /* Allocate space for a GOT entry pointing to the symbol. */ 4400 if (entry->got12) 4401 dinfo->got12 += 4; 4402 else if (entry->gotlos) 4403 dinfo->gotlos += 4; 4404 else if (entry->gothilo) 4405 dinfo->gothilo += 4; 4406 else 4407 entry->relocs32--; 4408 entry->relocs32++; 4409 4410 /* Allocate space for a GOT entry pointing to the function 4411 descriptor. */ 4412 if (entry->fdgot12) 4413 dinfo->got12 += 4; 4414 else if (entry->fdgotlos) 4415 dinfo->gotlos += 4; 4416 else if (entry->fdgothilo) 4417 dinfo->gothilo += 4; 4418 else 4419 entry->relocsfd--; 4420 entry->relocsfd++; 4421 4422 /* Decide whether we need a PLT entry, a function descriptor in the 4423 GOT, and a lazy PLT entry for this symbol. */ 4424 entry->plt = entry->call 4425 && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) 4426 && elf_hash_table (dinfo->info)->dynamic_sections_created; 4427 entry->privfd = entry->plt 4428 || entry->fdgoff12 || entry->fdgofflos || entry->fdgoffhilo 4429 || ((entry->fd || entry->fdgot12 || entry->fdgotlos || entry->fdgothilo) 4430 && (entry->symndx != -1 4431 || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h))); 4432 entry->lazyplt = entry->privfd 4433 && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) 4434 && ! (dinfo->info->flags & DF_BIND_NOW) 4435 && elf_hash_table (dinfo->info)->dynamic_sections_created; 4436 4437 /* Allocate space for a function descriptor. */ 4438 if (entry->fdgoff12) 4439 dinfo->fd12 += 8; 4440 else if (entry->fdgofflos) 4441 dinfo->fdlos += 8; 4442 else if (entry->privfd && entry->plt) 4443 dinfo->fdplt += 8; 4444 else if (entry->privfd) 4445 dinfo->fdhilo += 8; 4446 else 4447 entry->relocsfdv--; 4448 entry->relocsfdv++; 4449 4450 if (entry->lazyplt) 4451 dinfo->lzplt += 8; 4452 } 4453 4454 /* Compute the total GOT size required by each TLS symbol in each 4455 range. Symbols may require up to 5 words in the GOT: an entry 4456 holding the TLS offset for the symbol, and an entry with a full TLS 4457 descriptor taking 4 words. */ 4458 4459 static void 4460 _frvfdpic_count_tls_entries (struct frvfdpic_relocs_info *entry, 4461 struct _frvfdpic_dynamic_got_info *dinfo, 4462 bfd_boolean subtract) 4463 { 4464 const int l = subtract ? -1 : 1; 4465 4466 /* Allocate space for a GOT entry with the TLS offset of the 4467 symbol. */ 4468 if (entry->tlsoff12) 4469 dinfo->got12 += 4 * l; 4470 else if (entry->tlsofflos) 4471 dinfo->gotlos += 4 * l; 4472 else if (entry->tlsoffhilo) 4473 dinfo->gothilo += 4 * l; 4474 else 4475 entry->relocstlsoff -= l; 4476 entry->relocstlsoff += l; 4477 4478 /* If there's any TLSOFF relocation, mark the output file as not 4479 suitable for dlopening. This mark will remain even if we relax 4480 all such relocations, but this is not a problem, since we'll only 4481 do so for executables, and we definitely don't want anyone 4482 dlopening executables. */ 4483 if (entry->relocstlsoff) 4484 dinfo->info->flags |= DF_STATIC_TLS; 4485 4486 /* Allocate space for a TLS descriptor. */ 4487 if (entry->tlsdesc12) 4488 dinfo->tlsd12 += 8 * l; 4489 else if (entry->tlsdesclos) 4490 dinfo->tlsdlos += 8 * l; 4491 else if (entry->tlsplt) 4492 dinfo->tlsdplt += 8 * l; 4493 else if (entry->tlsdeschilo) 4494 dinfo->tlsdhilo += 8 * l; 4495 else 4496 entry->relocstlsd -= l; 4497 entry->relocstlsd += l; 4498 } 4499 4500 /* Compute the number of dynamic relocations and fixups that a symbol 4501 requires, and add (or subtract) from the grand and per-symbol 4502 totals. */ 4503 4504 static void 4505 _frvfdpic_count_relocs_fixups (struct frvfdpic_relocs_info *entry, 4506 struct _frvfdpic_dynamic_got_info *dinfo, 4507 bfd_boolean subtract) 4508 { 4509 bfd_vma relocs = 0, fixups = 0, tlsrets = 0; 4510 4511 if (!dinfo->info->executable || dinfo->info->pie) 4512 { 4513 relocs = entry->relocs32 + entry->relocsfd + entry->relocsfdv 4514 + entry->relocstlsd; 4515 4516 /* In the executable, TLS relocations to symbols that bind 4517 locally (including those that resolve to global TLS offsets) 4518 are resolved immediately, without any need for fixups or 4519 dynamic relocations. In shared libraries, however, we must 4520 emit dynamic relocations even for local symbols, because we 4521 don't know the module id the library is going to get at 4522 run-time, nor its TLS base offset. */ 4523 if (!dinfo->info->executable 4524 || (entry->symndx == -1 4525 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))) 4526 relocs += entry->relocstlsoff; 4527 } 4528 else 4529 { 4530 if (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)) 4531 { 4532 if (entry->symndx != -1 4533 || entry->d.h->root.type != bfd_link_hash_undefweak) 4534 fixups += entry->relocs32 + 2 * entry->relocsfdv; 4535 fixups += entry->relocstlsd; 4536 tlsrets += entry->relocstlsd; 4537 } 4538 else 4539 { 4540 relocs += entry->relocs32 + entry->relocsfdv 4541 + entry->relocstlsoff + entry->relocstlsd; 4542 } 4543 4544 if (entry->symndx != -1 4545 || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h)) 4546 { 4547 if (entry->symndx != -1 4548 || entry->d.h->root.type != bfd_link_hash_undefweak) 4549 fixups += entry->relocsfd; 4550 } 4551 else 4552 relocs += entry->relocsfd; 4553 } 4554 4555 if (subtract) 4556 { 4557 relocs = - relocs; 4558 fixups = - fixups; 4559 tlsrets = - tlsrets; 4560 } 4561 4562 entry->dynrelocs += relocs; 4563 entry->fixups += fixups; 4564 dinfo->relocs += relocs; 4565 dinfo->fixups += fixups; 4566 dinfo->tls_ret_refs += tlsrets; 4567 } 4568 4569 /* Look for opportunities to relax TLS relocations. We can assume 4570 we're linking the main executable or a static-tls library, since 4571 otherwise we wouldn't have got here. When relaxing, we have to 4572 first undo any previous accounting of TLS uses of fixups, dynamic 4573 relocations, GOT and PLT entries. */ 4574 4575 static void 4576 _frvfdpic_relax_tls_entries (struct frvfdpic_relocs_info *entry, 4577 struct _frvfdpic_dynamic_got_info *dinfo, 4578 bfd_boolean relaxing) 4579 { 4580 bfd_boolean changed = ! relaxing; 4581 4582 BFD_ASSERT (dinfo->info->executable 4583 || (dinfo->info->flags & DF_STATIC_TLS)); 4584 4585 if (entry->tlsdesc12 || entry->tlsdesclos || entry->tlsdeschilo) 4586 { 4587 if (! changed) 4588 { 4589 _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE); 4590 _frvfdpic_count_tls_entries (entry, dinfo, TRUE); 4591 changed = TRUE; 4592 } 4593 4594 /* When linking an executable, we can always decay GOTTLSDESC to 4595 TLSMOFF, if the symbol is local, or GOTTLSOFF, otherwise. 4596 When linking a static-tls shared library, using TLSMOFF is 4597 not an option, but we can still use GOTTLSOFF. When decaying 4598 to GOTTLSOFF, we must keep the GOT entry in range. We know 4599 it has to fit because we'll be trading the 4 words of hte TLS 4600 descriptor for a single word in the same range. */ 4601 if (! dinfo->info->executable 4602 || (entry->symndx == -1 4603 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))) 4604 { 4605 entry->tlsoff12 |= entry->tlsdesc12; 4606 entry->tlsofflos |= entry->tlsdesclos; 4607 entry->tlsoffhilo |= entry->tlsdeschilo; 4608 } 4609 4610 entry->tlsdesc12 = entry->tlsdesclos = entry->tlsdeschilo = 0; 4611 } 4612 4613 /* We can only decay TLSOFFs or call #gettlsoff to TLSMOFF in the 4614 main executable. We have to check whether the symbol's TLSOFF is 4615 in range for a setlos. For symbols with a hash entry, we can 4616 determine exactly what to do; for others locals, we don't have 4617 addresses handy, so we use the size of the TLS section as an 4618 approximation. If we get it wrong, we'll retain a GOT entry 4619 holding the TLS offset (without dynamic relocations or fixups), 4620 but we'll still optimize away the loads from it. Since TLS sizes 4621 are generally very small, it's probably not worth attempting to 4622 do better than this. */ 4623 if ((entry->tlsplt 4624 || entry->tlsoff12 || entry->tlsofflos || entry->tlsoffhilo) 4625 && dinfo->info->executable && relaxing 4626 && ((entry->symndx == -1 4627 && FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) 4628 /* The above may hold for an undefweak TLS symbol, so make 4629 sure we don't have this case before accessing def.value 4630 and def.section. */ 4631 && (entry->d.h->root.type == bfd_link_hash_undefweak 4632 || (bfd_vma)(entry->d.h->root.u.def.value 4633 + (entry->d.h->root.u.def.section 4634 ->output_section->vma) 4635 + entry->d.h->root.u.def.section->output_offset 4636 + entry->addend 4637 - tls_biased_base (dinfo->info) 4638 + 32768) < (bfd_vma)65536)) 4639 || (entry->symndx != -1 4640 && (elf_hash_table (dinfo->info)->tls_sec->size 4641 + abs (entry->addend) < 32768 + FRVFDPIC_TLS_BIAS)))) 4642 { 4643 if (! changed) 4644 { 4645 _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE); 4646 _frvfdpic_count_tls_entries (entry, dinfo, TRUE); 4647 changed = TRUE; 4648 } 4649 4650 entry->tlsplt = 4651 entry->tlsoff12 = entry->tlsofflos = entry->tlsoffhilo = 0; 4652 } 4653 4654 /* We can decay `call #gettlsoff' to a ldi #tlsoff if we already 4655 have a #gottlsoff12 relocation for this entry, or if we can fit 4656 one more in the 12-bit (and 16-bit) ranges. */ 4657 if (entry->tlsplt 4658 && (entry->tlsoff12 4659 || (relaxing 4660 && dinfo->got12 + dinfo->fd12 + dinfo->tlsd12 <= 4096 - 12 - 4 4661 && (dinfo->got12 + dinfo->fd12 + dinfo->tlsd12 4662 + dinfo->gotlos + dinfo->fdlos + dinfo->tlsdlos 4663 <= 65536 - 12 - 4)))) 4664 { 4665 if (! changed) 4666 { 4667 _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE); 4668 _frvfdpic_count_tls_entries (entry, dinfo, TRUE); 4669 changed = TRUE; 4670 } 4671 4672 entry->tlsoff12 = 1; 4673 entry->tlsplt = 0; 4674 } 4675 4676 if (changed) 4677 { 4678 _frvfdpic_count_tls_entries (entry, dinfo, FALSE); 4679 _frvfdpic_count_relocs_fixups (entry, dinfo, FALSE); 4680 } 4681 4682 return; 4683 } 4684 4685 /* Compute the total GOT and PLT size required by each symbol in each range. * 4686 Symbols may require up to 4 words in the GOT: an entry pointing to 4687 the symbol, an entry pointing to its function descriptor, and a 4688 private function descriptors taking two words. */ 4689 4690 static int 4691 _frvfdpic_count_got_plt_entries (void **entryp, void *dinfo_) 4692 { 4693 struct frvfdpic_relocs_info *entry = *entryp; 4694 struct _frvfdpic_dynamic_got_info *dinfo = dinfo_; 4695 4696 _frvfdpic_count_nontls_entries (entry, dinfo); 4697 4698 if (dinfo->info->executable || (dinfo->info->flags & DF_STATIC_TLS)) 4699 _frvfdpic_relax_tls_entries (entry, dinfo, FALSE); 4700 else 4701 { 4702 _frvfdpic_count_tls_entries (entry, dinfo, FALSE); 4703 _frvfdpic_count_relocs_fixups (entry, dinfo, FALSE); 4704 } 4705 4706 return 1; 4707 } 4708 4709 /* Determine the positive and negative ranges to be used by each 4710 offset range in the GOT. FDCUR and CUR, that must be aligned to a 4711 double-word boundary, are the minimum (negative) and maximum 4712 (positive) GOT offsets already used by previous ranges, except for 4713 an ODD entry that may have been left behind. GOT and FD indicate 4714 the size of GOT entries and function descriptors that must be 4715 placed within the range from -WRAP to WRAP. If there's room left, 4716 up to FDPLT bytes should be reserved for additional function 4717 descriptors. */ 4718 4719 inline static bfd_signed_vma 4720 _frvfdpic_compute_got_alloc_data (struct _frvfdpic_dynamic_got_alloc_data *gad, 4721 bfd_signed_vma fdcur, 4722 bfd_signed_vma odd, 4723 bfd_signed_vma cur, 4724 bfd_vma got, 4725 bfd_vma fd, 4726 bfd_vma fdplt, 4727 bfd_vma tlsd, 4728 bfd_vma tlsdplt, 4729 bfd_vma wrap) 4730 { 4731 bfd_signed_vma wrapmin = -wrap; 4732 const bfd_vma tdescsz = 8; 4733 4734 /* Start at the given initial points. */ 4735 gad->fdcur = fdcur; 4736 gad->cur = cur; 4737 4738 /* If we had an incoming odd word and we have any got entries that 4739 are going to use it, consume it, otherwise leave gad->odd at 4740 zero. We might force gad->odd to zero and return the incoming 4741 odd such that it is used by the next range, but then GOT entries 4742 might appear to be out of order and we wouldn't be able to 4743 shorten the GOT by one word if it turns out to end with an 4744 unpaired GOT entry. */ 4745 if (odd && got) 4746 { 4747 gad->odd = odd; 4748 got -= 4; 4749 odd = 0; 4750 } 4751 else 4752 gad->odd = 0; 4753 4754 /* If we're left with an unpaired GOT entry, compute its location 4755 such that we can return it. Otherwise, if got doesn't require an 4756 odd number of words here, either odd was already zero in the 4757 block above, or it was set to zero because got was non-zero, or 4758 got was already zero. In the latter case, we want the value of 4759 odd to carry over to the return statement, so we don't want to 4760 reset odd unless the condition below is true. */ 4761 if (got & 4) 4762 { 4763 odd = cur + got; 4764 got += 4; 4765 } 4766 4767 /* Compute the tentative boundaries of this range. */ 4768 gad->max = cur + got; 4769 gad->min = fdcur - fd; 4770 gad->fdplt = 0; 4771 4772 /* If function descriptors took too much space, wrap some of them 4773 around. */ 4774 if (gad->min < wrapmin) 4775 { 4776 gad->max += wrapmin - gad->min; 4777 gad->tmin = gad->min = wrapmin; 4778 } 4779 4780 /* If GOT entries took too much space, wrap some of them around. 4781 This may well cause gad->min to become lower than wrapmin. This 4782 will cause a relocation overflow later on, so we don't have to 4783 report it here . */ 4784 if ((bfd_vma) gad->max > wrap) 4785 { 4786 gad->min -= gad->max - wrap; 4787 gad->max = wrap; 4788 } 4789 4790 /* Add TLS descriptors. */ 4791 gad->tmax = gad->max + tlsd; 4792 gad->tmin = gad->min; 4793 gad->tlsdplt = 0; 4794 4795 /* If TLS descriptors took too much space, wrap an integral number 4796 of them around. */ 4797 if ((bfd_vma) gad->tmax > wrap) 4798 { 4799 bfd_vma wrapsize = gad->tmax - wrap; 4800 4801 wrapsize += tdescsz / 2; 4802 wrapsize &= ~ tdescsz / 2; 4803 4804 gad->tmin -= wrapsize; 4805 gad->tmax -= wrapsize; 4806 } 4807 4808 /* If there is space left and we have function descriptors 4809 referenced in PLT entries that could take advantage of shorter 4810 offsets, place them now. */ 4811 if (fdplt && gad->tmin > wrapmin) 4812 { 4813 bfd_vma fds; 4814 4815 if ((bfd_vma) (gad->tmin - wrapmin) < fdplt) 4816 fds = gad->tmin - wrapmin; 4817 else 4818 fds = fdplt; 4819 4820 fdplt -= fds; 4821 gad->min -= fds; 4822 gad->tmin -= fds; 4823 gad->fdplt += fds; 4824 } 4825 4826 /* If there is more space left, try to place some more function 4827 descriptors for PLT entries. */ 4828 if (fdplt && (bfd_vma) gad->tmax < wrap) 4829 { 4830 bfd_vma fds; 4831 4832 if ((bfd_vma) (wrap - gad->tmax) < fdplt) 4833 fds = wrap - gad->tmax; 4834 else 4835 fds = fdplt; 4836 4837 fdplt -= fds; 4838 gad->max += fds; 4839 gad->tmax += fds; 4840 gad->fdplt += fds; 4841 } 4842 4843 /* If there is space left and we have TLS descriptors referenced in 4844 PLT entries that could take advantage of shorter offsets, place 4845 them now. */ 4846 if (tlsdplt && gad->tmin > wrapmin) 4847 { 4848 bfd_vma tlsds; 4849 4850 if ((bfd_vma) (gad->tmin - wrapmin) < tlsdplt) 4851 tlsds = (gad->tmin - wrapmin) & ~ (tdescsz / 2); 4852 else 4853 tlsds = tlsdplt; 4854 4855 tlsdplt -= tlsds; 4856 gad->tmin -= tlsds; 4857 gad->tlsdplt += tlsds; 4858 } 4859 4860 /* If there is more space left, try to place some more TLS 4861 descriptors for PLT entries. Although we could try to fit an 4862 additional TLS descriptor with half of it just before before the 4863 wrap point and another right past the wrap point, this might 4864 cause us to run out of space for the next region, so don't do 4865 it. */ 4866 if (tlsdplt && (bfd_vma) gad->tmax < wrap - tdescsz / 2) 4867 { 4868 bfd_vma tlsds; 4869 4870 if ((bfd_vma) (wrap - gad->tmax) < tlsdplt) 4871 tlsds = (wrap - gad->tmax) & ~ (tdescsz / 2); 4872 else 4873 tlsds = tlsdplt; 4874 4875 tlsdplt -= tlsds; 4876 gad->tmax += tlsds; 4877 gad->tlsdplt += tlsds; 4878 } 4879 4880 /* If odd was initially computed as an offset past the wrap point, 4881 wrap it around. */ 4882 if (odd > gad->max) 4883 odd = gad->min + odd - gad->max; 4884 4885 /* _frvfdpic_get_got_entry() below will always wrap gad->cur if needed 4886 before returning, so do it here too. This guarantees that, 4887 should cur and fdcur meet at the wrap point, they'll both be 4888 equal to min. */ 4889 if (gad->cur == gad->max) 4890 gad->cur = gad->min; 4891 4892 /* Ditto for _frvfdpic_get_tlsdesc_entry(). */ 4893 gad->tcur = gad->max; 4894 if (gad->tcur == gad->tmax) 4895 gad->tcur = gad->tmin; 4896 4897 return odd; 4898 } 4899 4900 /* Compute the location of the next GOT entry, given the allocation 4901 data for a range. */ 4902 4903 inline static bfd_signed_vma 4904 _frvfdpic_get_got_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) 4905 { 4906 bfd_signed_vma ret; 4907 4908 if (gad->odd) 4909 { 4910 /* If there was an odd word left behind, use it. */ 4911 ret = gad->odd; 4912 gad->odd = 0; 4913 } 4914 else 4915 { 4916 /* Otherwise, use the word pointed to by cur, reserve the next 4917 as an odd word, and skip to the next pair of words, possibly 4918 wrapping around. */ 4919 ret = gad->cur; 4920 gad->odd = gad->cur + 4; 4921 gad->cur += 8; 4922 if (gad->cur == gad->max) 4923 gad->cur = gad->min; 4924 } 4925 4926 return ret; 4927 } 4928 4929 /* Compute the location of the next function descriptor entry in the 4930 GOT, given the allocation data for a range. */ 4931 4932 inline static bfd_signed_vma 4933 _frvfdpic_get_fd_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) 4934 { 4935 /* If we're at the bottom, wrap around, and only then allocate the 4936 next pair of words. */ 4937 if (gad->fdcur == gad->min) 4938 gad->fdcur = gad->max; 4939 return gad->fdcur -= 8; 4940 } 4941 4942 /* Compute the location of the next TLS descriptor entry in the GOT, 4943 given the allocation data for a range. */ 4944 inline static bfd_signed_vma 4945 _frvfdpic_get_tlsdesc_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) 4946 { 4947 bfd_signed_vma ret; 4948 4949 ret = gad->tcur; 4950 4951 gad->tcur += 8; 4952 4953 /* If we're at the top of the region, wrap around to the bottom. */ 4954 if (gad->tcur == gad->tmax) 4955 gad->tcur = gad->tmin; 4956 4957 return ret; 4958 } 4959 4960 /* Assign GOT offsets for every GOT entry and function descriptor. 4961 Doing everything in a single pass is tricky. */ 4962 4963 static int 4964 _frvfdpic_assign_got_entries (void **entryp, void *info_) 4965 { 4966 struct frvfdpic_relocs_info *entry = *entryp; 4967 struct _frvfdpic_dynamic_got_plt_info *dinfo = info_; 4968 4969 if (entry->got12) 4970 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->got12); 4971 else if (entry->gotlos) 4972 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); 4973 else if (entry->gothilo) 4974 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); 4975 4976 if (entry->fdgot12) 4977 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->got12); 4978 else if (entry->fdgotlos) 4979 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); 4980 else if (entry->fdgothilo) 4981 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); 4982 4983 if (entry->fdgoff12) 4984 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12); 4985 else if (entry->plt && dinfo->got12.fdplt) 4986 { 4987 dinfo->got12.fdplt -= 8; 4988 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12); 4989 } 4990 else if (entry->fdgofflos) 4991 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos); 4992 else if (entry->plt && dinfo->gotlos.fdplt) 4993 { 4994 dinfo->gotlos.fdplt -= 8; 4995 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos); 4996 } 4997 else if (entry->plt) 4998 { 4999 dinfo->gothilo.fdplt -= 8; 5000 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo); 5001 } 5002 else if (entry->privfd) 5003 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo); 5004 5005 if (entry->tlsoff12) 5006 entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->got12); 5007 else if (entry->tlsofflos) 5008 entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); 5009 else if (entry->tlsoffhilo) 5010 entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); 5011 5012 if (entry->tlsdesc12) 5013 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->got12); 5014 else if (entry->tlsplt && dinfo->got12.tlsdplt) 5015 { 5016 dinfo->got12.tlsdplt -= 8; 5017 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->got12); 5018 } 5019 else if (entry->tlsdesclos) 5020 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gotlos); 5021 else if (entry->tlsplt && dinfo->gotlos.tlsdplt) 5022 { 5023 dinfo->gotlos.tlsdplt -= 8; 5024 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gotlos); 5025 } 5026 else if (entry->tlsplt) 5027 { 5028 dinfo->gothilo.tlsdplt -= 8; 5029 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gothilo); 5030 } 5031 else if (entry->tlsdeschilo) 5032 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gothilo); 5033 5034 return 1; 5035 } 5036 5037 /* Assign GOT offsets to private function descriptors used by PLT 5038 entries (or referenced by 32-bit offsets), as well as PLT entries 5039 and lazy PLT entries. */ 5040 5041 static int 5042 _frvfdpic_assign_plt_entries (void **entryp, void *info_) 5043 { 5044 struct frvfdpic_relocs_info *entry = *entryp; 5045 struct _frvfdpic_dynamic_got_plt_info *dinfo = info_; 5046 5047 if (entry->privfd) 5048 BFD_ASSERT (entry->fd_entry); 5049 5050 if (entry->plt) 5051 { 5052 int size; 5053 5054 /* We use the section's raw size to mark the location of the 5055 next PLT entry. */ 5056 entry->plt_entry = frvfdpic_plt_section (dinfo->g.info)->size; 5057 5058 /* Figure out the length of this PLT entry based on the 5059 addressing mode we need to reach the function descriptor. */ 5060 BFD_ASSERT (entry->fd_entry); 5061 if (entry->fd_entry >= -(1 << (12 - 1)) 5062 && entry->fd_entry < (1 << (12 - 1))) 5063 size = 8; 5064 else if (entry->fd_entry >= -(1 << (16 - 1)) 5065 && entry->fd_entry < (1 << (16 - 1))) 5066 size = 12; 5067 else 5068 size = 16; 5069 5070 frvfdpic_plt_section (dinfo->g.info)->size += size; 5071 } 5072 5073 if (entry->lazyplt) 5074 { 5075 entry->lzplt_entry = dinfo->g.lzplt; 5076 dinfo->g.lzplt += 8; 5077 /* If this entry is the one that gets the resolver stub, account 5078 for the additional instruction. */ 5079 if (entry->lzplt_entry % FRVFDPIC_LZPLT_BLOCK_SIZE 5080 == FRVFDPIC_LZPLT_RESOLV_LOC) 5081 dinfo->g.lzplt += 4; 5082 } 5083 5084 if (entry->tlsplt) 5085 { 5086 int size; 5087 5088 entry->tlsplt_entry 5089 = frvfdpic_plt_section (dinfo->g.info)->size; 5090 5091 if (dinfo->g.info->executable 5092 && (entry->symndx != -1 5093 || FRVFDPIC_SYM_LOCAL (dinfo->g.info, entry->d.h))) 5094 { 5095 if ((bfd_signed_vma)entry->addend >= -(1 << (16 - 1)) 5096 /* FIXME: here we use the size of the TLS section 5097 as an upper bound for the value of the TLS 5098 symbol, because we may not know the exact value 5099 yet. If we get it wrong, we'll just waste a 5100 word in the PLT, and we should never get even 5101 close to 32 KiB of TLS anyway. */ 5102 && elf_hash_table (dinfo->g.info)->tls_sec 5103 && (elf_hash_table (dinfo->g.info)->tls_sec->size 5104 + (bfd_signed_vma)(entry->addend) <= (1 << (16 - 1)))) 5105 size = 8; 5106 else 5107 size = 12; 5108 } 5109 else if (entry->tlsoff_entry) 5110 { 5111 if (entry->tlsoff_entry >= -(1 << (12 - 1)) 5112 && entry->tlsoff_entry < (1 << (12 - 1))) 5113 size = 8; 5114 else if (entry->tlsoff_entry >= -(1 << (16 - 1)) 5115 && entry->tlsoff_entry < (1 << (16 - 1))) 5116 size = 12; 5117 else 5118 size = 16; 5119 } 5120 else 5121 { 5122 BFD_ASSERT (entry->tlsdesc_entry); 5123 5124 if (entry->tlsdesc_entry >= -(1 << (12 - 1)) 5125 && entry->tlsdesc_entry < (1 << (12 - 1))) 5126 size = 8; 5127 else if (entry->tlsdesc_entry >= -(1 << (16 - 1)) 5128 && entry->tlsdesc_entry < (1 << (16 - 1))) 5129 size = 12; 5130 else 5131 size = 16; 5132 } 5133 5134 frvfdpic_plt_section (dinfo->g.info)->size += size; 5135 } 5136 5137 return 1; 5138 } 5139 5140 /* Cancel out any effects of calling _frvfdpic_assign_got_entries and 5141 _frvfdpic_assign_plt_entries. */ 5142 5143 static int 5144 _frvfdpic_reset_got_plt_entries (void **entryp, void *ignore ATTRIBUTE_UNUSED) 5145 { 5146 struct frvfdpic_relocs_info *entry = *entryp; 5147 5148 entry->got_entry = 0; 5149 entry->fdgot_entry = 0; 5150 entry->fd_entry = 0; 5151 entry->plt_entry = (bfd_vma)-1; 5152 entry->lzplt_entry = (bfd_vma)-1; 5153 entry->tlsoff_entry = 0; 5154 entry->tlsdesc_entry = 0; 5155 entry->tlsplt_entry = (bfd_vma)-1; 5156 5157 return 1; 5158 } 5159 5160 /* Follow indirect and warning hash entries so that each got entry 5161 points to the final symbol definition. P must point to a pointer 5162 to the hash table we're traversing. Since this traversal may 5163 modify the hash table, we set this pointer to NULL to indicate 5164 we've made a potentially-destructive change to the hash table, so 5165 the traversal must be restarted. */ 5166 static int 5167 _frvfdpic_resolve_final_relocs_info (void **entryp, void *p) 5168 { 5169 struct frvfdpic_relocs_info *entry = *entryp; 5170 htab_t *htab = p; 5171 5172 if (entry->symndx == -1) 5173 { 5174 struct elf_link_hash_entry *h = entry->d.h; 5175 struct frvfdpic_relocs_info *oentry; 5176 5177 while (h->root.type == bfd_link_hash_indirect 5178 || h->root.type == bfd_link_hash_warning) 5179 h = (struct elf_link_hash_entry *)h->root.u.i.link; 5180 5181 if (entry->d.h == h) 5182 return 1; 5183 5184 oentry = frvfdpic_relocs_info_for_global (*htab, 0, h, entry->addend, 5185 NO_INSERT); 5186 5187 if (oentry) 5188 { 5189 /* Merge the two entries. */ 5190 frvfdpic_pic_merge_early_relocs_info (oentry, entry); 5191 htab_clear_slot (*htab, entryp); 5192 return 1; 5193 } 5194 5195 entry->d.h = h; 5196 5197 /* If we can't find this entry with the new bfd hash, re-insert 5198 it, and get the traversal restarted. */ 5199 if (! htab_find (*htab, entry)) 5200 { 5201 htab_clear_slot (*htab, entryp); 5202 entryp = htab_find_slot (*htab, entry, INSERT); 5203 if (! *entryp) 5204 *entryp = entry; 5205 /* Abort the traversal, since the whole table may have 5206 moved, and leave it up to the parent to restart the 5207 process. */ 5208 *(htab_t *)p = NULL; 5209 return 0; 5210 } 5211 } 5212 5213 return 1; 5214 } 5215 5216 /* Compute the total size of the GOT, the PLT, the dynamic relocations 5217 section and the rofixup section. Assign locations for GOT and PLT 5218 entries. */ 5219 5220 static bfd_boolean 5221 _frvfdpic_size_got_plt (bfd *output_bfd, 5222 struct _frvfdpic_dynamic_got_plt_info *gpinfop) 5223 { 5224 bfd_signed_vma odd; 5225 bfd_vma limit, tlslimit; 5226 struct bfd_link_info *info = gpinfop->g.info; 5227 bfd *dynobj = elf_hash_table (info)->dynobj; 5228 5229 memcpy (frvfdpic_dynamic_got_plt_info (info), &gpinfop->g, 5230 sizeof (gpinfop->g)); 5231 5232 odd = 12; 5233 /* Compute the total size taken by entries in the 12-bit and 16-bit 5234 ranges, to tell how many PLT function descriptors we can bring 5235 into the 12-bit range without causing the 16-bit range to 5236 overflow. */ 5237 limit = odd + gpinfop->g.got12 + gpinfop->g.gotlos 5238 + gpinfop->g.fd12 + gpinfop->g.fdlos 5239 + gpinfop->g.tlsd12 + gpinfop->g.tlsdlos; 5240 if (limit < (bfd_vma)1 << 16) 5241 limit = ((bfd_vma)1 << 16) - limit; 5242 else 5243 limit = 0; 5244 if (gpinfop->g.fdplt < limit) 5245 { 5246 tlslimit = (limit - gpinfop->g.fdplt) & ~ (bfd_vma) 8; 5247 limit = gpinfop->g.fdplt; 5248 } 5249 else 5250 tlslimit = 0; 5251 if (gpinfop->g.tlsdplt < tlslimit) 5252 tlslimit = gpinfop->g.tlsdplt; 5253 5254 /* Determine the ranges of GOT offsets that we can use for each 5255 range of addressing modes. */ 5256 odd = _frvfdpic_compute_got_alloc_data (&gpinfop->got12, 5257 0, 5258 odd, 5259 16, 5260 gpinfop->g.got12, 5261 gpinfop->g.fd12, 5262 limit, 5263 gpinfop->g.tlsd12, 5264 tlslimit, 5265 (bfd_vma)1 << (12-1)); 5266 odd = _frvfdpic_compute_got_alloc_data (&gpinfop->gotlos, 5267 gpinfop->got12.tmin, 5268 odd, 5269 gpinfop->got12.tmax, 5270 gpinfop->g.gotlos, 5271 gpinfop->g.fdlos, 5272 gpinfop->g.fdplt 5273 - gpinfop->got12.fdplt, 5274 gpinfop->g.tlsdlos, 5275 gpinfop->g.tlsdplt 5276 - gpinfop->got12.tlsdplt, 5277 (bfd_vma)1 << (16-1)); 5278 odd = _frvfdpic_compute_got_alloc_data (&gpinfop->gothilo, 5279 gpinfop->gotlos.tmin, 5280 odd, 5281 gpinfop->gotlos.tmax, 5282 gpinfop->g.gothilo, 5283 gpinfop->g.fdhilo, 5284 gpinfop->g.fdplt 5285 - gpinfop->got12.fdplt 5286 - gpinfop->gotlos.fdplt, 5287 gpinfop->g.tlsdhilo, 5288 gpinfop->g.tlsdplt 5289 - gpinfop->got12.tlsdplt 5290 - gpinfop->gotlos.tlsdplt, 5291 (bfd_vma)1 << (32-1)); 5292 5293 /* Now assign (most) GOT offsets. */ 5294 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_got_entries, 5295 gpinfop); 5296 5297 frvfdpic_got_section (info)->size = gpinfop->gothilo.tmax 5298 - gpinfop->gothilo.tmin 5299 /* If an odd word is the last word of the GOT, we don't need this 5300 word to be part of the GOT. */ 5301 - (odd + 4 == gpinfop->gothilo.tmax ? 4 : 0); 5302 if (frvfdpic_got_section (info)->size == 0) 5303 frvfdpic_got_section (info)->flags |= SEC_EXCLUDE; 5304 else if (frvfdpic_got_section (info)->size == 12 5305 && ! elf_hash_table (info)->dynamic_sections_created) 5306 { 5307 frvfdpic_got_section (info)->flags |= SEC_EXCLUDE; 5308 frvfdpic_got_section (info)->size = 0; 5309 } 5310 /* This will be non-NULL during relaxation. The assumption is that 5311 the size of one of these sections will never grow, only shrink, 5312 so we can use the larger buffer we allocated before. */ 5313 else if (frvfdpic_got_section (info)->contents == NULL) 5314 { 5315 frvfdpic_got_section (info)->contents = 5316 (bfd_byte *) bfd_zalloc (dynobj, 5317 frvfdpic_got_section (info)->size); 5318 if (frvfdpic_got_section (info)->contents == NULL) 5319 return FALSE; 5320 } 5321 5322 if (frvfdpic_gotrel_section (info)) 5323 /* Subtract the number of lzplt entries, since those will generate 5324 relocations in the pltrel section. */ 5325 frvfdpic_gotrel_section (info)->size = 5326 (gpinfop->g.relocs - gpinfop->g.lzplt / 8) 5327 * get_elf_backend_data (output_bfd)->s->sizeof_rel; 5328 else 5329 BFD_ASSERT (gpinfop->g.relocs == 0); 5330 if (frvfdpic_gotrel_section (info)->size == 0) 5331 frvfdpic_gotrel_section (info)->flags |= SEC_EXCLUDE; 5332 else if (frvfdpic_gotrel_section (info)->contents == NULL) 5333 { 5334 frvfdpic_gotrel_section (info)->contents = 5335 (bfd_byte *) bfd_zalloc (dynobj, 5336 frvfdpic_gotrel_section (info)->size); 5337 if (frvfdpic_gotrel_section (info)->contents == NULL) 5338 return FALSE; 5339 } 5340 5341 frvfdpic_gotfixup_section (info)->size = (gpinfop->g.fixups + 1) * 4; 5342 if (frvfdpic_gotfixup_section (info)->size == 0) 5343 frvfdpic_gotfixup_section (info)->flags |= SEC_EXCLUDE; 5344 else if (frvfdpic_gotfixup_section (info)->contents == NULL) 5345 { 5346 frvfdpic_gotfixup_section (info)->contents = 5347 (bfd_byte *) bfd_zalloc (dynobj, 5348 frvfdpic_gotfixup_section (info)->size); 5349 if (frvfdpic_gotfixup_section (info)->contents == NULL) 5350 return FALSE; 5351 } 5352 5353 if (frvfdpic_pltrel_section (info)) 5354 { 5355 frvfdpic_pltrel_section (info)->size = 5356 gpinfop->g.lzplt / 8 5357 * get_elf_backend_data (output_bfd)->s->sizeof_rel; 5358 if (frvfdpic_pltrel_section (info)->size == 0) 5359 frvfdpic_pltrel_section (info)->flags |= SEC_EXCLUDE; 5360 else if (frvfdpic_pltrel_section (info)->contents == NULL) 5361 { 5362 frvfdpic_pltrel_section (info)->contents = 5363 (bfd_byte *) bfd_zalloc (dynobj, 5364 frvfdpic_pltrel_section (info)->size); 5365 if (frvfdpic_pltrel_section (info)->contents == NULL) 5366 return FALSE; 5367 } 5368 } 5369 5370 /* Add 4 bytes for every block of at most 65535 lazy PLT entries, 5371 such that there's room for the additional instruction needed to 5372 call the resolver. Since _frvfdpic_assign_got_entries didn't 5373 account for them, our block size is 4 bytes smaller than the real 5374 block size. */ 5375 if (frvfdpic_plt_section (info)) 5376 { 5377 frvfdpic_plt_section (info)->size = gpinfop->g.lzplt 5378 + ((gpinfop->g.lzplt + (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) - 8) 5379 / (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) * 4); 5380 } 5381 5382 /* Reset it, such that _frvfdpic_assign_plt_entries() can use it to 5383 actually assign lazy PLT entries addresses. */ 5384 gpinfop->g.lzplt = 0; 5385 5386 /* Save information that we're going to need to generate GOT and PLT 5387 entries. */ 5388 frvfdpic_got_initial_offset (info) = -gpinfop->gothilo.tmin; 5389 5390 if (get_elf_backend_data (output_bfd)->want_got_sym) 5391 elf_hash_table (info)->hgot->root.u.def.value 5392 = frvfdpic_got_initial_offset (info); 5393 5394 if (frvfdpic_plt_section (info)) 5395 frvfdpic_plt_initial_offset (info) = 5396 frvfdpic_plt_section (info)->size; 5397 5398 /* Allocate a ret statement at plt_initial_offset, to be used by 5399 locally-resolved TLS descriptors. */ 5400 if (gpinfop->g.tls_ret_refs) 5401 frvfdpic_plt_section (info)->size += 4; 5402 5403 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_plt_entries, 5404 gpinfop); 5405 5406 /* Allocate the PLT section contents only after 5407 _frvfdpic_assign_plt_entries has a chance to add the size of the 5408 non-lazy PLT entries. */ 5409 if (frvfdpic_plt_section (info)) 5410 { 5411 if (frvfdpic_plt_section (info)->size == 0) 5412 frvfdpic_plt_section (info)->flags |= SEC_EXCLUDE; 5413 else if (frvfdpic_plt_section (info)->contents == NULL) 5414 { 5415 frvfdpic_plt_section (info)->contents = 5416 (bfd_byte *) bfd_zalloc (dynobj, 5417 frvfdpic_plt_section (info)->size); 5418 if (frvfdpic_plt_section (info)->contents == NULL) 5419 return FALSE; 5420 } 5421 } 5422 5423 return TRUE; 5424 } 5425 5426 /* Set the sizes of the dynamic sections. */ 5427 5428 static bfd_boolean 5429 elf32_frvfdpic_size_dynamic_sections (bfd *output_bfd, 5430 struct bfd_link_info *info) 5431 { 5432 bfd *dynobj; 5433 asection *s; 5434 struct _frvfdpic_dynamic_got_plt_info gpinfo; 5435 5436 dynobj = elf_hash_table (info)->dynobj; 5437 BFD_ASSERT (dynobj != NULL); 5438 5439 if (elf_hash_table (info)->dynamic_sections_created) 5440 { 5441 /* Set the contents of the .interp section to the interpreter. */ 5442 if (info->executable) 5443 { 5444 s = bfd_get_linker_section (dynobj, ".interp"); 5445 BFD_ASSERT (s != NULL); 5446 s->size = sizeof ELF_DYNAMIC_INTERPRETER; 5447 s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; 5448 } 5449 } 5450 5451 memset (&gpinfo, 0, sizeof (gpinfo)); 5452 gpinfo.g.info = info; 5453 5454 for (;;) 5455 { 5456 htab_t relocs = frvfdpic_relocs_info (info); 5457 5458 htab_traverse (relocs, _frvfdpic_resolve_final_relocs_info, &relocs); 5459 5460 if (relocs == frvfdpic_relocs_info (info)) 5461 break; 5462 } 5463 5464 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_count_got_plt_entries, 5465 &gpinfo.g); 5466 5467 /* Allocate space to save the summary information, we're going to 5468 use it if we're doing relaxations. */ 5469 frvfdpic_dynamic_got_plt_info (info) = bfd_alloc (dynobj, sizeof (gpinfo.g)); 5470 5471 if (!_frvfdpic_size_got_plt (output_bfd, &gpinfo)) 5472 return FALSE; 5473 5474 if (elf_hash_table (info)->dynamic_sections_created) 5475 { 5476 if (frvfdpic_got_section (info)->size) 5477 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)) 5478 return FALSE; 5479 5480 if (frvfdpic_pltrel_section (info)->size) 5481 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) 5482 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_REL) 5483 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) 5484 return FALSE; 5485 5486 if (frvfdpic_gotrel_section (info)->size) 5487 if (!_bfd_elf_add_dynamic_entry (info, DT_REL, 0) 5488 || !_bfd_elf_add_dynamic_entry (info, DT_RELSZ, 0) 5489 || !_bfd_elf_add_dynamic_entry (info, DT_RELENT, 5490 sizeof (Elf32_External_Rel))) 5491 return FALSE; 5492 } 5493 5494 return TRUE; 5495 } 5496 5497 static bfd_boolean 5498 elf32_frvfdpic_always_size_sections (bfd *output_bfd, 5499 struct bfd_link_info *info) 5500 { 5501 if (!info->relocatable 5502 && !bfd_elf_stack_segment_size (output_bfd, info, 5503 "__stacksize", DEFAULT_STACK_SIZE)) 5504 return FALSE; 5505 5506 return TRUE; 5507 } 5508 5509 /* Check whether any of the relocations was optimized away, and 5510 subtract it from the relocation or fixup count. */ 5511 static bfd_boolean 5512 _frvfdpic_check_discarded_relocs (bfd *abfd, asection *sec, 5513 struct bfd_link_info *info, 5514 5515 bfd_boolean *changed) 5516 { 5517 Elf_Internal_Shdr *symtab_hdr; 5518 struct elf_link_hash_entry **sym_hashes; 5519 Elf_Internal_Rela *rel, *erel; 5520 5521 if ((sec->flags & SEC_RELOC) == 0 5522 || sec->reloc_count == 0) 5523 return TRUE; 5524 5525 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 5526 sym_hashes = elf_sym_hashes (abfd); 5527 5528 rel = elf_section_data (sec)->relocs; 5529 5530 /* Now examine each relocation. */ 5531 for (erel = rel + sec->reloc_count; rel < erel; rel++) 5532 { 5533 struct elf_link_hash_entry *h; 5534 unsigned long r_symndx; 5535 struct frvfdpic_relocs_info *picrel; 5536 struct _frvfdpic_dynamic_got_info *dinfo; 5537 5538 if (ELF32_R_TYPE (rel->r_info) != R_FRV_32 5539 && ELF32_R_TYPE (rel->r_info) != R_FRV_FUNCDESC) 5540 continue; 5541 5542 if (_bfd_elf_section_offset (sec->output_section->owner, 5543 info, sec, rel->r_offset) 5544 != (bfd_vma)-1) 5545 continue; 5546 5547 r_symndx = ELF32_R_SYM (rel->r_info); 5548 if (r_symndx < symtab_hdr->sh_info) 5549 h = NULL; 5550 else 5551 { 5552 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 5553 while (h->root.type == bfd_link_hash_indirect 5554 || h->root.type == bfd_link_hash_warning) 5555 h = (struct elf_link_hash_entry *)h->root.u.i.link; 5556 } 5557 5558 if (h != NULL) 5559 picrel = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info (info), 5560 abfd, h, 5561 rel->r_addend, NO_INSERT); 5562 else 5563 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info (info), 5564 abfd, r_symndx, 5565 rel->r_addend, NO_INSERT); 5566 5567 if (! picrel) 5568 return FALSE; 5569 5570 *changed = TRUE; 5571 dinfo = frvfdpic_dynamic_got_plt_info (info); 5572 5573 _frvfdpic_count_relocs_fixups (picrel, dinfo, TRUE); 5574 if (ELF32_R_TYPE (rel->r_info) == R_FRV_32) 5575 picrel->relocs32--; 5576 else /* we know (ELF32_R_TYPE (rel->r_info) == R_FRV_FUNCDESC) */ 5577 picrel->relocsfd--; 5578 _frvfdpic_count_relocs_fixups (picrel, dinfo, FALSE); 5579 } 5580 5581 return TRUE; 5582 } 5583 5584 static bfd_boolean 5585 frvfdpic_elf_discard_info (bfd *ibfd, 5586 struct elf_reloc_cookie *cookie ATTRIBUTE_UNUSED, 5587 struct bfd_link_info *info) 5588 { 5589 bfd_boolean changed = FALSE; 5590 asection *s; 5591 bfd *obfd = NULL; 5592 5593 /* Account for relaxation of .eh_frame section. */ 5594 for (s = ibfd->sections; s; s = s->next) 5595 if (s->sec_info_type == SEC_INFO_TYPE_EH_FRAME) 5596 { 5597 if (!_frvfdpic_check_discarded_relocs (ibfd, s, info, &changed)) 5598 return FALSE; 5599 obfd = s->output_section->owner; 5600 } 5601 5602 if (changed) 5603 { 5604 struct _frvfdpic_dynamic_got_plt_info gpinfo; 5605 5606 memset (&gpinfo, 0, sizeof (gpinfo)); 5607 memcpy (&gpinfo.g, frvfdpic_dynamic_got_plt_info (info), 5608 sizeof (gpinfo.g)); 5609 5610 /* Clear GOT and PLT assignments. */ 5611 htab_traverse (frvfdpic_relocs_info (info), 5612 _frvfdpic_reset_got_plt_entries, 5613 NULL); 5614 5615 if (!_frvfdpic_size_got_plt (obfd, &gpinfo)) 5616 return FALSE; 5617 } 5618 5619 return TRUE; 5620 } 5621 5622 /* Look for opportunities to relax TLS relocations. We can assume 5623 we're linking the main executable or a static-tls library, since 5624 otherwise we wouldn't have got here. */ 5625 5626 static int 5627 _frvfdpic_relax_got_plt_entries (void **entryp, void *dinfo_) 5628 { 5629 struct frvfdpic_relocs_info *entry = *entryp; 5630 struct _frvfdpic_dynamic_got_info *dinfo = dinfo_; 5631 5632 _frvfdpic_relax_tls_entries (entry, dinfo, TRUE); 5633 5634 return 1; 5635 } 5636 5637 static bfd_boolean 5638 elf32_frvfdpic_relax_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, 5639 struct bfd_link_info *info, bfd_boolean *again) 5640 { 5641 struct _frvfdpic_dynamic_got_plt_info gpinfo; 5642 5643 if (info->relocatable) 5644 (*info->callbacks->einfo) 5645 (_("%P%F: --relax and -r may not be used together\n")); 5646 5647 /* If we return early, we didn't change anything. */ 5648 *again = FALSE; 5649 5650 /* We'll do our thing when requested to relax the GOT section. */ 5651 if (sec != frvfdpic_got_section (info)) 5652 return TRUE; 5653 5654 /* We can only relax when linking the main executable or a library 5655 that can't be dlopened. */ 5656 if (! info->executable && ! (info->flags & DF_STATIC_TLS)) 5657 return TRUE; 5658 5659 /* If there isn't a TLS section for this binary, we can't do 5660 anything about its TLS relocations (it probably doesn't have 5661 any. */ 5662 if (elf_hash_table (info)->tls_sec == NULL) 5663 return TRUE; 5664 5665 memset (&gpinfo, 0, sizeof (gpinfo)); 5666 memcpy (&gpinfo.g, frvfdpic_dynamic_got_plt_info (info), sizeof (gpinfo.g)); 5667 5668 /* Now look for opportunities to relax, adjusting the GOT usage 5669 as needed. */ 5670 htab_traverse (frvfdpic_relocs_info (info), 5671 _frvfdpic_relax_got_plt_entries, 5672 &gpinfo.g); 5673 5674 /* If we changed anything, reset and re-assign GOT and PLT entries. */ 5675 if (memcmp (frvfdpic_dynamic_got_plt_info (info), 5676 &gpinfo.g, sizeof (gpinfo.g)) != 0) 5677 { 5678 /* Clear GOT and PLT assignments. */ 5679 htab_traverse (frvfdpic_relocs_info (info), 5680 _frvfdpic_reset_got_plt_entries, 5681 NULL); 5682 5683 /* The owner of the TLS section is the output bfd. There should 5684 be a better way to get to it. */ 5685 if (!_frvfdpic_size_got_plt (elf_hash_table (info)->tls_sec->owner, 5686 &gpinfo)) 5687 return FALSE; 5688 5689 /* Repeat until we don't make any further changes. We could fail to 5690 introduce changes in a round if, for example, the 12-bit range is 5691 full, but we later release some space by getting rid of TLS 5692 descriptors in it. We have to repeat the whole process because 5693 we might have changed the size of a section processed before this 5694 one. */ 5695 *again = TRUE; 5696 } 5697 5698 return TRUE; 5699 } 5700 5701 /* Fill in code and data in dynamic sections. */ 5702 5703 static bfd_boolean 5704 elf32_frv_finish_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 5705 struct bfd_link_info *info ATTRIBUTE_UNUSED) 5706 { 5707 /* Nothing to be done for non-FDPIC. */ 5708 return TRUE; 5709 } 5710 5711 static bfd_boolean 5712 elf32_frvfdpic_finish_dynamic_sections (bfd *output_bfd, 5713 struct bfd_link_info *info) 5714 { 5715 bfd *dynobj; 5716 asection *sdyn; 5717 5718 dynobj = elf_hash_table (info)->dynobj; 5719 5720 if (frvfdpic_dynamic_got_plt_info (info)) 5721 { 5722 BFD_ASSERT (frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs == 0); 5723 } 5724 if (frvfdpic_got_section (info)) 5725 { 5726 BFD_ASSERT (frvfdpic_gotrel_section (info)->size 5727 == (frvfdpic_gotrel_section (info)->reloc_count 5728 * sizeof (Elf32_External_Rel))); 5729 5730 if (frvfdpic_gotfixup_section (info)) 5731 { 5732 struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot; 5733 bfd_vma got_value = hgot->root.u.def.value 5734 + hgot->root.u.def.section->output_section->vma 5735 + hgot->root.u.def.section->output_offset; 5736 struct bfd_link_hash_entry *hend; 5737 5738 _frvfdpic_add_rofixup (output_bfd, frvfdpic_gotfixup_section (info), 5739 got_value, 0); 5740 5741 if (frvfdpic_gotfixup_section (info)->size 5742 != (frvfdpic_gotfixup_section (info)->reloc_count * 4)) 5743 { 5744 error: 5745 info->callbacks->einfo 5746 ("LINKER BUG: .rofixup section size mismatch\n"); 5747 return FALSE; 5748 } 5749 5750 hend = bfd_link_hash_lookup (info->hash, "__ROFIXUP_END__", 5751 FALSE, FALSE, TRUE); 5752 if (hend 5753 && (hend->type == bfd_link_hash_defined 5754 || hend->type == bfd_link_hash_defweak) 5755 && hend->u.def.section->output_section != NULL) 5756 { 5757 bfd_vma value = 5758 frvfdpic_gotfixup_section (info)->output_section->vma 5759 + frvfdpic_gotfixup_section (info)->output_offset 5760 + frvfdpic_gotfixup_section (info)->size 5761 - hend->u.def.section->output_section->vma 5762 - hend->u.def.section->output_offset; 5763 BFD_ASSERT (hend->u.def.value == value); 5764 if (hend->u.def.value != value) 5765 goto error; 5766 } 5767 } 5768 } 5769 if (frvfdpic_pltrel_section (info)) 5770 { 5771 BFD_ASSERT (frvfdpic_pltrel_section (info)->size 5772 == (frvfdpic_pltrel_section (info)->reloc_count 5773 * sizeof (Elf32_External_Rel))); 5774 } 5775 5776 5777 if (elf_hash_table (info)->dynamic_sections_created) 5778 { 5779 Elf32_External_Dyn * dyncon; 5780 Elf32_External_Dyn * dynconend; 5781 5782 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 5783 5784 BFD_ASSERT (sdyn != NULL); 5785 5786 dyncon = (Elf32_External_Dyn *) sdyn->contents; 5787 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); 5788 5789 for (; dyncon < dynconend; dyncon++) 5790 { 5791 Elf_Internal_Dyn dyn; 5792 5793 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 5794 5795 switch (dyn.d_tag) 5796 { 5797 default: 5798 break; 5799 5800 case DT_PLTGOT: 5801 dyn.d_un.d_ptr = frvfdpic_got_section (info)->output_section->vma 5802 + frvfdpic_got_section (info)->output_offset 5803 + frvfdpic_got_initial_offset (info); 5804 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 5805 break; 5806 5807 case DT_JMPREL: 5808 dyn.d_un.d_ptr = frvfdpic_pltrel_section (info) 5809 ->output_section->vma 5810 + frvfdpic_pltrel_section (info)->output_offset; 5811 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 5812 break; 5813 5814 case DT_PLTRELSZ: 5815 dyn.d_un.d_val = frvfdpic_pltrel_section (info)->size; 5816 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 5817 break; 5818 } 5819 } 5820 } 5821 5822 return TRUE; 5823 } 5824 5825 /* Adjust a symbol defined by a dynamic object and referenced by a 5826 regular object. */ 5827 5828 static bfd_boolean 5829 elf32_frvfdpic_adjust_dynamic_symbol 5830 (struct bfd_link_info *info ATTRIBUTE_UNUSED, 5831 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) 5832 { 5833 bfd * dynobj; 5834 5835 dynobj = elf_hash_table (info)->dynobj; 5836 5837 /* Make sure we know what is going on here. */ 5838 BFD_ASSERT (dynobj != NULL 5839 && (h->u.weakdef != NULL 5840 || (h->def_dynamic 5841 && h->ref_regular 5842 && !h->def_regular))); 5843 5844 /* If this is a weak symbol, and there is a real definition, the 5845 processor independent code will have arranged for us to see the 5846 real definition first, and we can just use the same value. */ 5847 if (h->u.weakdef != NULL) 5848 { 5849 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 5850 || h->u.weakdef->root.type == bfd_link_hash_defweak); 5851 h->root.u.def.section = h->u.weakdef->root.u.def.section; 5852 h->root.u.def.value = h->u.weakdef->root.u.def.value; 5853 } 5854 5855 return TRUE; 5856 } 5857 5858 /* Perform any actions needed for dynamic symbols. */ 5859 5860 static bfd_boolean 5861 elf32_frvfdpic_finish_dynamic_symbol 5862 (bfd *output_bfd ATTRIBUTE_UNUSED, 5863 struct bfd_link_info *info ATTRIBUTE_UNUSED, 5864 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED, 5865 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) 5866 { 5867 return TRUE; 5868 } 5869 5870 /* Decide whether to attempt to turn absptr or lsda encodings in 5871 shared libraries into pcrel within the given input section. */ 5872 5873 static bfd_boolean 5874 frvfdpic_elf_use_relative_eh_frame 5875 (bfd *input_bfd ATTRIBUTE_UNUSED, 5876 struct bfd_link_info *info ATTRIBUTE_UNUSED, 5877 asection *eh_frame_section ATTRIBUTE_UNUSED) 5878 { 5879 /* We can't use PC-relative encodings in FDPIC binaries, in general. */ 5880 return FALSE; 5881 } 5882 5883 /* Adjust the contents of an eh_frame_hdr section before they're output. */ 5884 5885 static bfd_byte 5886 frvfdpic_elf_encode_eh_address (bfd *abfd, 5887 struct bfd_link_info *info, 5888 asection *osec, bfd_vma offset, 5889 asection *loc_sec, bfd_vma loc_offset, 5890 bfd_vma *encoded) 5891 { 5892 struct elf_link_hash_entry *h; 5893 5894 h = elf_hash_table (info)->hgot; 5895 BFD_ASSERT (h && h->root.type == bfd_link_hash_defined); 5896 5897 if (! h || (_frvfdpic_osec_to_segment (abfd, osec) 5898 == _frvfdpic_osec_to_segment (abfd, loc_sec->output_section))) 5899 return _bfd_elf_encode_eh_address (abfd, info, osec, offset, 5900 loc_sec, loc_offset, encoded); 5901 5902 BFD_ASSERT (_frvfdpic_osec_to_segment (abfd, osec) 5903 == (_frvfdpic_osec_to_segment 5904 (abfd, h->root.u.def.section->output_section))); 5905 5906 *encoded = osec->vma + offset 5907 - (h->root.u.def.value 5908 + h->root.u.def.section->output_section->vma 5909 + h->root.u.def.section->output_offset); 5910 5911 return DW_EH_PE_datarel | DW_EH_PE_sdata4; 5912 } 5913 5914 /* Look through the relocs for a section during the first phase. 5915 5916 Besides handling virtual table relocs for gc, we have to deal with 5917 all sorts of PIC-related relocations. We describe below the 5918 general plan on how to handle such relocations, even though we only 5919 collect information at this point, storing them in hash tables for 5920 perusal of later passes. 5921 5922 32 relocations are propagated to the linker output when creating 5923 position-independent output. LO16 and HI16 relocations are not 5924 supposed to be encountered in this case. 5925 5926 LABEL16 should always be resolvable by the linker, since it's only 5927 used by branches. 5928 5929 LABEL24, on the other hand, is used by calls. If it turns out that 5930 the target of a call is a dynamic symbol, a PLT entry must be 5931 created for it, which triggers the creation of a private function 5932 descriptor and, unless lazy binding is disabled, a lazy PLT entry. 5933 5934 GPREL relocations require the referenced symbol to be in the same 5935 segment as _gp, but this can only be checked later. 5936 5937 All GOT, GOTOFF and FUNCDESC relocations require a .got section to 5938 exist. LABEL24 might as well, since it may require a PLT entry, 5939 that will require a got. 5940 5941 Non-FUNCDESC GOT relocations require a GOT entry to be created 5942 regardless of whether the symbol is dynamic. However, since a 5943 global symbol that turns out to not be exported may have the same 5944 address of a non-dynamic symbol, we don't assign GOT entries at 5945 this point, such that we can share them in this case. A relocation 5946 for the GOT entry always has to be created, be it to offset a 5947 private symbol by the section load address, be it to get the symbol 5948 resolved dynamically. 5949 5950 FUNCDESC GOT relocations require a GOT entry to be created, and 5951 handled as if a FUNCDESC relocation was applied to the GOT entry in 5952 an object file. 5953 5954 FUNCDESC relocations referencing a symbol that turns out to NOT be 5955 dynamic cause a private function descriptor to be created. The 5956 FUNCDESC relocation then decays to a 32 relocation that points at 5957 the private descriptor. If the symbol is dynamic, the FUNCDESC 5958 relocation is propagated to the linker output, such that the 5959 dynamic linker creates the canonical descriptor, pointing to the 5960 dynamically-resolved definition of the function. 5961 5962 Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic 5963 symbols that are assigned to the same segment as the GOT, but we 5964 can only check this later, after we know the complete set of 5965 symbols defined and/or exported. 5966 5967 FUNCDESC GOTOFF relocations require a function descriptor to be 5968 created and, unless lazy binding is disabled or the symbol is not 5969 dynamic, a lazy PLT entry. Since we can't tell at this point 5970 whether a symbol is going to be dynamic, we have to decide later 5971 whether to create a lazy PLT entry or bind the descriptor directly 5972 to the private function. 5973 5974 FUNCDESC_VALUE relocations are not supposed to be present in object 5975 files, but they may very well be simply propagated to the linker 5976 output, since they have no side effect. 5977 5978 5979 A function descriptor always requires a FUNCDESC_VALUE relocation. 5980 Whether it's in .plt.rel or not depends on whether lazy binding is 5981 enabled and on whether the referenced symbol is dynamic. 5982 5983 The existence of a lazy PLT requires the resolverStub lazy PLT 5984 entry to be present. 5985 5986 5987 As for assignment of GOT, PLT and lazy PLT entries, and private 5988 descriptors, we might do them all sequentially, but we can do 5989 better than that. For example, we can place GOT entries and 5990 private function descriptors referenced using 12-bit operands 5991 closer to the PIC register value, such that these relocations don't 5992 overflow. Those that are only referenced with LO16 relocations 5993 could come next, but we may as well place PLT-required function 5994 descriptors in the 12-bit range to make them shorter. Symbols 5995 referenced with LO16/HI16 may come next, but we may place 5996 additional function descriptors in the 16-bit range if we can 5997 reliably tell that we've already placed entries that are ever 5998 referenced with only LO16. PLT entries are therefore generated as 5999 small as possible, while not introducing relocation overflows in 6000 GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be 6001 generated before or after PLT entries, but not intermingled with 6002 them, such that we can have more lazy PLT entries in range for a 6003 branch to the resolverStub. The resolverStub should be emitted at 6004 the most distant location from the first lazy PLT entry such that 6005 it's still in range for a branch, or closer, if there isn't a need 6006 for so many lazy PLT entries. Additional lazy PLT entries may be 6007 emitted after the resolverStub, as long as branches are still in 6008 range. If the branch goes out of range, longer lazy PLT entries 6009 are emitted. 6010 6011 We could further optimize PLT and lazy PLT entries by giving them 6012 priority in assignment to closer-to-gr17 locations depending on the 6013 number of occurrences of references to them (assuming a function 6014 that's called more often is more important for performance, so its 6015 PLT entry should be faster), or taking hints from the compiler. 6016 Given infinite time and money... :-) */ 6017 6018 static bfd_boolean 6019 elf32_frv_check_relocs (bfd *abfd, 6020 struct bfd_link_info *info, 6021 asection *sec, 6022 const Elf_Internal_Rela *relocs) 6023 { 6024 Elf_Internal_Shdr *symtab_hdr; 6025 struct elf_link_hash_entry **sym_hashes; 6026 const Elf_Internal_Rela *rel; 6027 const Elf_Internal_Rela *rel_end; 6028 bfd *dynobj; 6029 struct frvfdpic_relocs_info *picrel; 6030 6031 if (info->relocatable) 6032 return TRUE; 6033 6034 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 6035 sym_hashes = elf_sym_hashes (abfd); 6036 6037 dynobj = elf_hash_table (info)->dynobj; 6038 rel_end = relocs + sec->reloc_count; 6039 for (rel = relocs; rel < rel_end; rel++) 6040 { 6041 struct elf_link_hash_entry *h; 6042 unsigned long r_symndx; 6043 6044 r_symndx = ELF32_R_SYM (rel->r_info); 6045 if (r_symndx < symtab_hdr->sh_info) 6046 h = NULL; 6047 else 6048 { 6049 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 6050 while (h->root.type == bfd_link_hash_indirect 6051 || h->root.type == bfd_link_hash_warning) 6052 h = (struct elf_link_hash_entry *) h->root.u.i.link; 6053 6054 /* PR15323, ref flags aren't set for references in the same 6055 object. */ 6056 h->root.non_ir_ref = 1; 6057 } 6058 6059 switch (ELF32_R_TYPE (rel->r_info)) 6060 { 6061 case R_FRV_GETTLSOFF: 6062 case R_FRV_TLSDESC_VALUE: 6063 case R_FRV_GOTTLSDESC12: 6064 case R_FRV_GOTTLSDESCHI: 6065 case R_FRV_GOTTLSDESCLO: 6066 case R_FRV_GOTTLSOFF12: 6067 case R_FRV_GOTTLSOFFHI: 6068 case R_FRV_GOTTLSOFFLO: 6069 case R_FRV_TLSOFF: 6070 case R_FRV_GOT12: 6071 case R_FRV_GOTHI: 6072 case R_FRV_GOTLO: 6073 case R_FRV_FUNCDESC_GOT12: 6074 case R_FRV_FUNCDESC_GOTHI: 6075 case R_FRV_FUNCDESC_GOTLO: 6076 case R_FRV_GOTOFF12: 6077 case R_FRV_GOTOFFHI: 6078 case R_FRV_GOTOFFLO: 6079 case R_FRV_FUNCDESC_GOTOFF12: 6080 case R_FRV_FUNCDESC_GOTOFFHI: 6081 case R_FRV_FUNCDESC_GOTOFFLO: 6082 case R_FRV_FUNCDESC: 6083 case R_FRV_FUNCDESC_VALUE: 6084 case R_FRV_TLSMOFF12: 6085 case R_FRV_TLSMOFFHI: 6086 case R_FRV_TLSMOFFLO: 6087 case R_FRV_TLSMOFF: 6088 if (! IS_FDPIC (abfd)) 6089 goto bad_reloc; 6090 /* Fall through. */ 6091 case R_FRV_GPREL12: 6092 case R_FRV_GPRELU12: 6093 case R_FRV_GPRELHI: 6094 case R_FRV_GPRELLO: 6095 case R_FRV_LABEL24: 6096 case R_FRV_32: 6097 if (! dynobj) 6098 { 6099 elf_hash_table (info)->dynobj = dynobj = abfd; 6100 if (! _frv_create_got_section (abfd, info)) 6101 return FALSE; 6102 } 6103 if (! IS_FDPIC (abfd)) 6104 { 6105 picrel = NULL; 6106 break; 6107 } 6108 if (h != NULL) 6109 { 6110 if (h->dynindx == -1) 6111 switch (ELF_ST_VISIBILITY (h->other)) 6112 { 6113 case STV_INTERNAL: 6114 case STV_HIDDEN: 6115 break; 6116 default: 6117 bfd_elf_link_record_dynamic_symbol (info, h); 6118 break; 6119 } 6120 picrel 6121 = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info (info), 6122 abfd, h, 6123 rel->r_addend, INSERT); 6124 } 6125 else 6126 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info 6127 (info), abfd, r_symndx, 6128 rel->r_addend, INSERT); 6129 if (! picrel) 6130 return FALSE; 6131 break; 6132 6133 default: 6134 picrel = NULL; 6135 break; 6136 } 6137 6138 switch (ELF32_R_TYPE (rel->r_info)) 6139 { 6140 case R_FRV_LABEL24: 6141 if (IS_FDPIC (abfd)) 6142 picrel->call = 1; 6143 break; 6144 6145 case R_FRV_FUNCDESC_VALUE: 6146 picrel->relocsfdv++; 6147 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) 6148 picrel->relocs32--; 6149 /* Fall through. */ 6150 6151 case R_FRV_32: 6152 if (! IS_FDPIC (abfd)) 6153 break; 6154 6155 picrel->sym = 1; 6156 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) 6157 picrel->relocs32++; 6158 break; 6159 6160 case R_FRV_GOT12: 6161 picrel->got12 = 1; 6162 break; 6163 6164 case R_FRV_GOTHI: 6165 case R_FRV_GOTLO: 6166 picrel->gothilo = 1; 6167 break; 6168 6169 case R_FRV_FUNCDESC_GOT12: 6170 picrel->fdgot12 = 1; 6171 break; 6172 6173 case R_FRV_FUNCDESC_GOTHI: 6174 case R_FRV_FUNCDESC_GOTLO: 6175 picrel->fdgothilo = 1; 6176 break; 6177 6178 case R_FRV_GOTOFF12: 6179 case R_FRV_GOTOFFHI: 6180 case R_FRV_GOTOFFLO: 6181 picrel->gotoff = 1; 6182 break; 6183 6184 case R_FRV_FUNCDESC_GOTOFF12: 6185 picrel->fdgoff12 = 1; 6186 break; 6187 6188 case R_FRV_FUNCDESC_GOTOFFHI: 6189 case R_FRV_FUNCDESC_GOTOFFLO: 6190 picrel->fdgoffhilo = 1; 6191 break; 6192 6193 case R_FRV_FUNCDESC: 6194 picrel->fd = 1; 6195 picrel->relocsfd++; 6196 break; 6197 6198 case R_FRV_GETTLSOFF: 6199 picrel->tlsplt = 1; 6200 break; 6201 6202 case R_FRV_TLSDESC_VALUE: 6203 picrel->relocstlsd++; 6204 goto bad_reloc; 6205 6206 case R_FRV_GOTTLSDESC12: 6207 picrel->tlsdesc12 = 1; 6208 break; 6209 6210 case R_FRV_GOTTLSDESCHI: 6211 case R_FRV_GOTTLSDESCLO: 6212 picrel->tlsdeschilo = 1; 6213 break; 6214 6215 case R_FRV_TLSMOFF12: 6216 case R_FRV_TLSMOFFHI: 6217 case R_FRV_TLSMOFFLO: 6218 case R_FRV_TLSMOFF: 6219 break; 6220 6221 case R_FRV_GOTTLSOFF12: 6222 picrel->tlsoff12 = 1; 6223 info->flags |= DF_STATIC_TLS; 6224 break; 6225 6226 case R_FRV_GOTTLSOFFHI: 6227 case R_FRV_GOTTLSOFFLO: 6228 picrel->tlsoffhilo = 1; 6229 info->flags |= DF_STATIC_TLS; 6230 break; 6231 6232 case R_FRV_TLSOFF: 6233 picrel->relocstlsoff++; 6234 info->flags |= DF_STATIC_TLS; 6235 goto bad_reloc; 6236 6237 /* This relocation describes the C++ object vtable hierarchy. 6238 Reconstruct it for later use during GC. */ 6239 case R_FRV_GNU_VTINHERIT: 6240 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 6241 return FALSE; 6242 break; 6243 6244 /* This relocation describes which C++ vtable entries are actually 6245 used. Record for later use during GC. */ 6246 case R_FRV_GNU_VTENTRY: 6247 BFD_ASSERT (h != NULL); 6248 if (h != NULL 6249 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 6250 return FALSE; 6251 break; 6252 6253 case R_FRV_LABEL16: 6254 case R_FRV_LO16: 6255 case R_FRV_HI16: 6256 case R_FRV_GPREL12: 6257 case R_FRV_GPRELU12: 6258 case R_FRV_GPREL32: 6259 case R_FRV_GPRELHI: 6260 case R_FRV_GPRELLO: 6261 case R_FRV_TLSDESC_RELAX: 6262 case R_FRV_GETTLSOFF_RELAX: 6263 case R_FRV_TLSOFF_RELAX: 6264 break; 6265 6266 default: 6267 bad_reloc: 6268 info->callbacks->einfo 6269 (_("%B: unsupported relocation type %i\n"), 6270 abfd, ELF32_R_TYPE (rel->r_info)); 6271 return FALSE; 6272 } 6273 } 6274 6275 return TRUE; 6276 } 6277 6278 6279 /* Return the machine subcode from the ELF e_flags header. */ 6280 6281 static int 6282 elf32_frv_machine (bfd *abfd) 6283 { 6284 switch (elf_elfheader (abfd)->e_flags & EF_FRV_CPU_MASK) 6285 { 6286 default: break; 6287 case EF_FRV_CPU_FR550: return bfd_mach_fr550; 6288 case EF_FRV_CPU_FR500: return bfd_mach_fr500; 6289 case EF_FRV_CPU_FR450: return bfd_mach_fr450; 6290 case EF_FRV_CPU_FR405: return bfd_mach_fr400; 6291 case EF_FRV_CPU_FR400: return bfd_mach_fr400; 6292 case EF_FRV_CPU_FR300: return bfd_mach_fr300; 6293 case EF_FRV_CPU_SIMPLE: return bfd_mach_frvsimple; 6294 case EF_FRV_CPU_TOMCAT: return bfd_mach_frvtomcat; 6295 } 6296 6297 return bfd_mach_frv; 6298 } 6299 6300 /* Set the right machine number for a FRV ELF file. */ 6301 6302 static bfd_boolean 6303 elf32_frv_object_p (bfd *abfd) 6304 { 6305 bfd_default_set_arch_mach (abfd, bfd_arch_frv, elf32_frv_machine (abfd)); 6306 return (((elf_elfheader (abfd)->e_flags & EF_FRV_FDPIC) != 0) 6307 == (IS_FDPIC (abfd))); 6308 } 6309 6310 /* Function to set the ELF flag bits. */ 6311 6312 static bfd_boolean 6313 frv_elf_set_private_flags (bfd *abfd, flagword flags) 6314 { 6315 elf_elfheader (abfd)->e_flags = flags; 6316 elf_flags_init (abfd) = TRUE; 6317 return TRUE; 6318 } 6319 6320 /* Return true if the architecture described by elf header flag 6321 EXTENSION is an extension of the architecture described by BASE. */ 6322 6323 static bfd_boolean 6324 frv_elf_arch_extension_p (flagword base, flagword extension) 6325 { 6326 if (base == extension) 6327 return TRUE; 6328 6329 /* CPU_GENERIC code can be merged with code for a specific 6330 architecture, in which case the result is marked as being 6331 for the specific architecture. Everything is therefore 6332 an extension of CPU_GENERIC. */ 6333 if (base == EF_FRV_CPU_GENERIC) 6334 return TRUE; 6335 6336 if (extension == EF_FRV_CPU_FR450) 6337 if (base == EF_FRV_CPU_FR400 || base == EF_FRV_CPU_FR405) 6338 return TRUE; 6339 6340 if (extension == EF_FRV_CPU_FR405) 6341 if (base == EF_FRV_CPU_FR400) 6342 return TRUE; 6343 6344 return FALSE; 6345 } 6346 6347 /* Merge backend specific data from an object file to the output 6348 object file when linking. */ 6349 6350 static bfd_boolean 6351 frv_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) 6352 { 6353 flagword old_flags, old_partial; 6354 flagword new_flags, new_partial; 6355 bfd_boolean error = FALSE; 6356 char new_opt[80]; 6357 char old_opt[80]; 6358 6359 new_opt[0] = old_opt[0] = '\0'; 6360 new_flags = elf_elfheader (ibfd)->e_flags; 6361 old_flags = elf_elfheader (obfd)->e_flags; 6362 6363 if (new_flags & EF_FRV_FDPIC) 6364 new_flags &= ~EF_FRV_PIC; 6365 6366 #ifdef DEBUG 6367 (*_bfd_error_handler) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s", 6368 old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no", 6369 bfd_get_filename (ibfd)); 6370 #endif 6371 6372 if (!elf_flags_init (obfd)) /* First call, no flags set. */ 6373 { 6374 elf_flags_init (obfd) = TRUE; 6375 old_flags = new_flags; 6376 } 6377 6378 else if (new_flags == old_flags) /* Compatible flags are ok. */ 6379 ; 6380 6381 else /* Possibly incompatible flags. */ 6382 { 6383 /* Warn if different # of gprs are used. Note, 0 means nothing is 6384 said about the size of gprs. */ 6385 new_partial = (new_flags & EF_FRV_GPR_MASK); 6386 old_partial = (old_flags & EF_FRV_GPR_MASK); 6387 if (new_partial == old_partial) 6388 ; 6389 6390 else if (new_partial == 0) 6391 ; 6392 6393 else if (old_partial == 0) 6394 old_flags |= new_partial; 6395 6396 else 6397 { 6398 switch (new_partial) 6399 { 6400 default: strcat (new_opt, " -mgpr-??"); break; 6401 case EF_FRV_GPR_32: strcat (new_opt, " -mgpr-32"); break; 6402 case EF_FRV_GPR_64: strcat (new_opt, " -mgpr-64"); break; 6403 } 6404 6405 switch (old_partial) 6406 { 6407 default: strcat (old_opt, " -mgpr-??"); break; 6408 case EF_FRV_GPR_32: strcat (old_opt, " -mgpr-32"); break; 6409 case EF_FRV_GPR_64: strcat (old_opt, " -mgpr-64"); break; 6410 } 6411 } 6412 6413 /* Warn if different # of fprs are used. Note, 0 means nothing is 6414 said about the size of fprs. */ 6415 new_partial = (new_flags & EF_FRV_FPR_MASK); 6416 old_partial = (old_flags & EF_FRV_FPR_MASK); 6417 if (new_partial == old_partial) 6418 ; 6419 6420 else if (new_partial == 0) 6421 ; 6422 6423 else if (old_partial == 0) 6424 old_flags |= new_partial; 6425 6426 else 6427 { 6428 switch (new_partial) 6429 { 6430 default: strcat (new_opt, " -mfpr-?"); break; 6431 case EF_FRV_FPR_32: strcat (new_opt, " -mfpr-32"); break; 6432 case EF_FRV_FPR_64: strcat (new_opt, " -mfpr-64"); break; 6433 case EF_FRV_FPR_NONE: strcat (new_opt, " -msoft-float"); break; 6434 } 6435 6436 switch (old_partial) 6437 { 6438 default: strcat (old_opt, " -mfpr-?"); break; 6439 case EF_FRV_FPR_32: strcat (old_opt, " -mfpr-32"); break; 6440 case EF_FRV_FPR_64: strcat (old_opt, " -mfpr-64"); break; 6441 case EF_FRV_FPR_NONE: strcat (old_opt, " -msoft-float"); break; 6442 } 6443 } 6444 6445 /* Warn if different dword support was used. Note, 0 means nothing is 6446 said about the dword support. */ 6447 new_partial = (new_flags & EF_FRV_DWORD_MASK); 6448 old_partial = (old_flags & EF_FRV_DWORD_MASK); 6449 if (new_partial == old_partial) 6450 ; 6451 6452 else if (new_partial == 0) 6453 ; 6454 6455 else if (old_partial == 0) 6456 old_flags |= new_partial; 6457 6458 else 6459 { 6460 switch (new_partial) 6461 { 6462 default: strcat (new_opt, " -mdword-?"); break; 6463 case EF_FRV_DWORD_YES: strcat (new_opt, " -mdword"); break; 6464 case EF_FRV_DWORD_NO: strcat (new_opt, " -mno-dword"); break; 6465 } 6466 6467 switch (old_partial) 6468 { 6469 default: strcat (old_opt, " -mdword-?"); break; 6470 case EF_FRV_DWORD_YES: strcat (old_opt, " -mdword"); break; 6471 case EF_FRV_DWORD_NO: strcat (old_opt, " -mno-dword"); break; 6472 } 6473 } 6474 6475 /* Or in flags that accumulate (ie, if one module uses it, mark that the 6476 feature is used. */ 6477 old_flags |= new_flags & (EF_FRV_DOUBLE 6478 | EF_FRV_MEDIA 6479 | EF_FRV_MULADD 6480 | EF_FRV_NON_PIC_RELOCS); 6481 6482 /* If any module was compiled without -G0, clear the G0 bit. */ 6483 old_flags = ((old_flags & ~ EF_FRV_G0) 6484 | (old_flags & new_flags & EF_FRV_G0)); 6485 6486 /* If any module was compiled without -mnopack, clear the mnopack bit. */ 6487 old_flags = ((old_flags & ~ EF_FRV_NOPACK) 6488 | (old_flags & new_flags & EF_FRV_NOPACK)); 6489 6490 /* We don't have to do anything if the pic flags are the same, or the new 6491 module(s) were compiled with -mlibrary-pic. */ 6492 new_partial = (new_flags & EF_FRV_PIC_FLAGS); 6493 old_partial = (old_flags & EF_FRV_PIC_FLAGS); 6494 if ((new_partial == old_partial) || ((new_partial & EF_FRV_LIBPIC) != 0)) 6495 ; 6496 6497 /* If the old module(s) were compiled with -mlibrary-pic, copy in the pic 6498 flags if any from the new module. */ 6499 else if ((old_partial & EF_FRV_LIBPIC) != 0) 6500 old_flags = (old_flags & ~ EF_FRV_PIC_FLAGS) | new_partial; 6501 6502 /* If we have mixtures of -fpic and -fPIC, or in both bits. */ 6503 else if (new_partial != 0 && old_partial != 0) 6504 old_flags |= new_partial; 6505 6506 /* One module was compiled for pic and the other was not, see if we have 6507 had any relocations that are not pic-safe. */ 6508 else 6509 { 6510 if ((old_flags & EF_FRV_NON_PIC_RELOCS) == 0) 6511 old_flags |= new_partial; 6512 else 6513 { 6514 old_flags &= ~ EF_FRV_PIC_FLAGS; 6515 #ifndef FRV_NO_PIC_ERROR 6516 error = TRUE; 6517 (*_bfd_error_handler) 6518 (_("%s: compiled with %s and linked with modules that use non-pic relocations"), 6519 bfd_get_filename (ibfd), 6520 (new_flags & EF_FRV_BIGPIC) ? "-fPIC" : "-fpic"); 6521 #endif 6522 } 6523 } 6524 6525 /* Warn if different cpu is used (allow a specific cpu to override 6526 the generic cpu). */ 6527 new_partial = (new_flags & EF_FRV_CPU_MASK); 6528 old_partial = (old_flags & EF_FRV_CPU_MASK); 6529 if (frv_elf_arch_extension_p (new_partial, old_partial)) 6530 ; 6531 6532 else if (frv_elf_arch_extension_p (old_partial, new_partial)) 6533 old_flags = (old_flags & ~EF_FRV_CPU_MASK) | new_partial; 6534 6535 else 6536 { 6537 switch (new_partial) 6538 { 6539 default: strcat (new_opt, " -mcpu=?"); break; 6540 case EF_FRV_CPU_GENERIC: strcat (new_opt, " -mcpu=frv"); break; 6541 case EF_FRV_CPU_SIMPLE: strcat (new_opt, " -mcpu=simple"); break; 6542 case EF_FRV_CPU_FR550: strcat (new_opt, " -mcpu=fr550"); break; 6543 case EF_FRV_CPU_FR500: strcat (new_opt, " -mcpu=fr500"); break; 6544 case EF_FRV_CPU_FR450: strcat (new_opt, " -mcpu=fr450"); break; 6545 case EF_FRV_CPU_FR405: strcat (new_opt, " -mcpu=fr405"); break; 6546 case EF_FRV_CPU_FR400: strcat (new_opt, " -mcpu=fr400"); break; 6547 case EF_FRV_CPU_FR300: strcat (new_opt, " -mcpu=fr300"); break; 6548 case EF_FRV_CPU_TOMCAT: strcat (new_opt, " -mcpu=tomcat"); break; 6549 } 6550 6551 switch (old_partial) 6552 { 6553 default: strcat (old_opt, " -mcpu=?"); break; 6554 case EF_FRV_CPU_GENERIC: strcat (old_opt, " -mcpu=frv"); break; 6555 case EF_FRV_CPU_SIMPLE: strcat (old_opt, " -mcpu=simple"); break; 6556 case EF_FRV_CPU_FR550: strcat (old_opt, " -mcpu=fr550"); break; 6557 case EF_FRV_CPU_FR500: strcat (old_opt, " -mcpu=fr500"); break; 6558 case EF_FRV_CPU_FR450: strcat (old_opt, " -mcpu=fr450"); break; 6559 case EF_FRV_CPU_FR405: strcat (old_opt, " -mcpu=fr405"); break; 6560 case EF_FRV_CPU_FR400: strcat (old_opt, " -mcpu=fr400"); break; 6561 case EF_FRV_CPU_FR300: strcat (old_opt, " -mcpu=fr300"); break; 6562 case EF_FRV_CPU_TOMCAT: strcat (old_opt, " -mcpu=tomcat"); break; 6563 } 6564 } 6565 6566 /* Print out any mismatches from above. */ 6567 if (new_opt[0]) 6568 { 6569 error = TRUE; 6570 (*_bfd_error_handler) 6571 (_("%s: compiled with %s and linked with modules compiled with %s"), 6572 bfd_get_filename (ibfd), new_opt, old_opt); 6573 } 6574 6575 /* Warn about any other mismatches */ 6576 new_partial = (new_flags & ~ EF_FRV_ALL_FLAGS); 6577 old_partial = (old_flags & ~ EF_FRV_ALL_FLAGS); 6578 if (new_partial != old_partial) 6579 { 6580 old_flags |= new_partial; 6581 error = TRUE; 6582 (*_bfd_error_handler) 6583 (_("%s: uses different unknown e_flags (0x%lx) fields than previous modules (0x%lx)"), 6584 bfd_get_filename (ibfd), (long)new_partial, (long)old_partial); 6585 } 6586 } 6587 6588 /* If the cpu is -mcpu=simple, then set the -mnopack bit. */ 6589 if ((old_flags & EF_FRV_CPU_MASK) == EF_FRV_CPU_SIMPLE) 6590 old_flags |= EF_FRV_NOPACK; 6591 6592 /* Update the old flags now with changes made above. */ 6593 old_partial = elf_elfheader (obfd)->e_flags & EF_FRV_CPU_MASK; 6594 elf_elfheader (obfd)->e_flags = old_flags; 6595 if (old_partial != (old_flags & EF_FRV_CPU_MASK)) 6596 bfd_default_set_arch_mach (obfd, bfd_arch_frv, elf32_frv_machine (obfd)); 6597 6598 if (((new_flags & EF_FRV_FDPIC) == 0) 6599 != (! IS_FDPIC (ibfd))) 6600 { 6601 error = TRUE; 6602 if (IS_FDPIC (obfd)) 6603 (*_bfd_error_handler) 6604 (_("%s: cannot link non-fdpic object file into fdpic executable"), 6605 bfd_get_filename (ibfd)); 6606 else 6607 (*_bfd_error_handler) 6608 (_("%s: cannot link fdpic object file into non-fdpic executable"), 6609 bfd_get_filename (ibfd)); 6610 } 6611 6612 if (error) 6613 bfd_set_error (bfd_error_bad_value); 6614 6615 return !error; 6616 } 6617 6618 6619 static bfd_boolean 6620 frv_elf_print_private_bfd_data (bfd *abfd, void * ptr) 6621 { 6622 FILE *file = (FILE *) ptr; 6623 flagword flags; 6624 6625 BFD_ASSERT (abfd != NULL && ptr != NULL); 6626 6627 /* Print normal ELF private data. */ 6628 _bfd_elf_print_private_bfd_data (abfd, ptr); 6629 6630 flags = elf_elfheader (abfd)->e_flags; 6631 fprintf (file, _("private flags = 0x%lx:"), (unsigned long) flags); 6632 6633 switch (flags & EF_FRV_CPU_MASK) 6634 { 6635 default: break; 6636 case EF_FRV_CPU_SIMPLE: fprintf (file, " -mcpu=simple"); break; 6637 case EF_FRV_CPU_FR550: fprintf (file, " -mcpu=fr550"); break; 6638 case EF_FRV_CPU_FR500: fprintf (file, " -mcpu=fr500"); break; 6639 case EF_FRV_CPU_FR450: fprintf (file, " -mcpu=fr450"); break; 6640 case EF_FRV_CPU_FR405: fprintf (file, " -mcpu=fr405"); break; 6641 case EF_FRV_CPU_FR400: fprintf (file, " -mcpu=fr400"); break; 6642 case EF_FRV_CPU_FR300: fprintf (file, " -mcpu=fr300"); break; 6643 case EF_FRV_CPU_TOMCAT: fprintf (file, " -mcpu=tomcat"); break; 6644 } 6645 6646 switch (flags & EF_FRV_GPR_MASK) 6647 { 6648 default: break; 6649 case EF_FRV_GPR_32: fprintf (file, " -mgpr-32"); break; 6650 case EF_FRV_GPR_64: fprintf (file, " -mgpr-64"); break; 6651 } 6652 6653 switch (flags & EF_FRV_FPR_MASK) 6654 { 6655 default: break; 6656 case EF_FRV_FPR_32: fprintf (file, " -mfpr-32"); break; 6657 case EF_FRV_FPR_64: fprintf (file, " -mfpr-64"); break; 6658 case EF_FRV_FPR_NONE: fprintf (file, " -msoft-float"); break; 6659 } 6660 6661 switch (flags & EF_FRV_DWORD_MASK) 6662 { 6663 default: break; 6664 case EF_FRV_DWORD_YES: fprintf (file, " -mdword"); break; 6665 case EF_FRV_DWORD_NO: fprintf (file, " -mno-dword"); break; 6666 } 6667 6668 if (flags & EF_FRV_DOUBLE) 6669 fprintf (file, " -mdouble"); 6670 6671 if (flags & EF_FRV_MEDIA) 6672 fprintf (file, " -mmedia"); 6673 6674 if (flags & EF_FRV_MULADD) 6675 fprintf (file, " -mmuladd"); 6676 6677 if (flags & EF_FRV_PIC) 6678 fprintf (file, " -fpic"); 6679 6680 if (flags & EF_FRV_BIGPIC) 6681 fprintf (file, " -fPIC"); 6682 6683 if (flags & EF_FRV_LIBPIC) 6684 fprintf (file, " -mlibrary-pic"); 6685 6686 if (flags & EF_FRV_FDPIC) 6687 fprintf (file, " -mfdpic"); 6688 6689 if (flags & EF_FRV_NON_PIC_RELOCS) 6690 fprintf (file, " non-pic relocations"); 6691 6692 if (flags & EF_FRV_G0) 6693 fprintf (file, " -G0"); 6694 6695 fputc ('\n', file); 6696 return TRUE; 6697 } 6698 6699 6700 /* Support for core dump NOTE sections. */ 6701 6702 static bfd_boolean 6703 elf32_frv_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 6704 { 6705 int offset; 6706 unsigned int raw_size; 6707 6708 switch (note->descsz) 6709 { 6710 default: 6711 return FALSE; 6712 6713 /* The Linux/FRV elf_prstatus struct is 268 bytes long. The other 6714 hardcoded offsets and sizes listed below (and contained within 6715 this lexical block) refer to fields in the target's elf_prstatus 6716 struct. */ 6717 case 268: 6718 /* `pr_cursig' is at offset 12. */ 6719 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); 6720 6721 /* `pr_pid' is at offset 24. */ 6722 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); 6723 6724 /* `pr_reg' is at offset 72. */ 6725 offset = 72; 6726 6727 /* Most grok_prstatus implementations set `raw_size' to the size 6728 of the pr_reg field. For Linux/FRV, we set `raw_size' to be 6729 the size of `pr_reg' plus the size of `pr_exec_fdpic_loadmap' 6730 and `pr_interp_fdpic_loadmap', both of which (by design) 6731 immediately follow `pr_reg'. This will allow these fields to 6732 be viewed by GDB as registers. 6733 6734 `pr_reg' is 184 bytes long. `pr_exec_fdpic_loadmap' and 6735 `pr_interp_fdpic_loadmap' are 4 bytes each. */ 6736 raw_size = 184 + 4 + 4; 6737 6738 break; 6739 } 6740 6741 /* Make a ".reg/999" section. */ 6742 return _bfd_elfcore_make_pseudosection (abfd, ".reg", raw_size, 6743 note->descpos + offset); 6744 } 6745 6746 static bfd_boolean 6747 elf32_frv_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 6748 { 6749 switch (note->descsz) 6750 { 6751 default: 6752 return FALSE; 6753 6754 /* The Linux/FRV elf_prpsinfo struct is 124 bytes long. */ 6755 case 124: 6756 6757 /* `pr_fname' is found at offset 28 and is 16 bytes long. */ 6758 elf_tdata (abfd)->core->program 6759 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); 6760 6761 /* `pr_psargs' is found at offset 44 and is 80 bytes long. */ 6762 elf_tdata (abfd)->core->command 6763 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); 6764 } 6765 6766 /* Note that for some reason, a spurious space is tacked 6767 onto the end of the args in some (at least one anyway) 6768 implementations, so strip it off if it exists. */ 6769 6770 { 6771 char *command = elf_tdata (abfd)->core->command; 6772 int n = strlen (command); 6773 6774 if (0 < n && command[n - 1] == ' ') 6775 command[n - 1] = '\0'; 6776 } 6777 6778 return TRUE; 6779 } 6780 #define ELF_ARCH bfd_arch_frv 6781 #define ELF_TARGET_ID FRV_ELF_DATA 6782 #define ELF_MACHINE_CODE EM_CYGNUS_FRV 6783 #define ELF_MAXPAGESIZE 0x1000 6784 6785 #define TARGET_BIG_SYM frv_elf32_vec 6786 #define TARGET_BIG_NAME "elf32-frv" 6787 6788 #define elf_info_to_howto frv_info_to_howto_rela 6789 #define elf_backend_relocate_section elf32_frv_relocate_section 6790 #define elf_backend_gc_mark_hook elf32_frv_gc_mark_hook 6791 #define elf_backend_check_relocs elf32_frv_check_relocs 6792 #define elf_backend_object_p elf32_frv_object_p 6793 #define elf_backend_add_symbol_hook elf32_frv_add_symbol_hook 6794 6795 #define elf_backend_stack_align 8 6796 #define elf_backend_can_gc_sections 1 6797 #define elf_backend_rela_normal 1 6798 6799 #define bfd_elf32_bfd_reloc_type_lookup frv_reloc_type_lookup 6800 #define bfd_elf32_bfd_reloc_name_lookup frv_reloc_name_lookup 6801 #define bfd_elf32_bfd_set_private_flags frv_elf_set_private_flags 6802 #define bfd_elf32_bfd_merge_private_bfd_data frv_elf_merge_private_bfd_data 6803 #define bfd_elf32_bfd_print_private_bfd_data frv_elf_print_private_bfd_data 6804 6805 #define elf_backend_want_got_sym 1 6806 #define elf_backend_got_header_size 0 6807 #define elf_backend_want_got_plt 0 6808 #define elf_backend_plt_readonly 1 6809 #define elf_backend_want_plt_sym 0 6810 #define elf_backend_plt_header_size 0 6811 6812 #define elf_backend_finish_dynamic_sections \ 6813 elf32_frv_finish_dynamic_sections 6814 6815 #define elf_backend_grok_prstatus elf32_frv_grok_prstatus 6816 #define elf_backend_grok_psinfo elf32_frv_grok_psinfo 6817 6818 #include "elf32-target.h" 6819 6820 #undef ELF_MAXPAGESIZE 6821 #define ELF_MAXPAGESIZE 0x4000 6822 6823 #undef TARGET_BIG_SYM 6824 #define TARGET_BIG_SYM frv_elf32_fdpic_vec 6825 #undef TARGET_BIG_NAME 6826 #define TARGET_BIG_NAME "elf32-frvfdpic" 6827 #undef elf32_bed 6828 #define elf32_bed elf32_frvfdpic_bed 6829 6830 #undef elf_info_to_howto_rel 6831 #define elf_info_to_howto_rel frvfdpic_info_to_howto_rel 6832 6833 #undef bfd_elf32_bfd_link_hash_table_create 6834 #define bfd_elf32_bfd_link_hash_table_create \ 6835 frvfdpic_elf_link_hash_table_create 6836 #undef elf_backend_always_size_sections 6837 #define elf_backend_always_size_sections \ 6838 elf32_frvfdpic_always_size_sections 6839 6840 #undef elf_backend_create_dynamic_sections 6841 #define elf_backend_create_dynamic_sections \ 6842 elf32_frvfdpic_create_dynamic_sections 6843 #undef elf_backend_adjust_dynamic_symbol 6844 #define elf_backend_adjust_dynamic_symbol \ 6845 elf32_frvfdpic_adjust_dynamic_symbol 6846 #undef elf_backend_size_dynamic_sections 6847 #define elf_backend_size_dynamic_sections \ 6848 elf32_frvfdpic_size_dynamic_sections 6849 #undef bfd_elf32_bfd_relax_section 6850 #define bfd_elf32_bfd_relax_section \ 6851 elf32_frvfdpic_relax_section 6852 #undef elf_backend_finish_dynamic_symbol 6853 #define elf_backend_finish_dynamic_symbol \ 6854 elf32_frvfdpic_finish_dynamic_symbol 6855 #undef elf_backend_finish_dynamic_sections 6856 #define elf_backend_finish_dynamic_sections \ 6857 elf32_frvfdpic_finish_dynamic_sections 6858 6859 #undef elf_backend_discard_info 6860 #define elf_backend_discard_info \ 6861 frvfdpic_elf_discard_info 6862 #undef elf_backend_can_make_relative_eh_frame 6863 #define elf_backend_can_make_relative_eh_frame \ 6864 frvfdpic_elf_use_relative_eh_frame 6865 #undef elf_backend_can_make_lsda_relative_eh_frame 6866 #define elf_backend_can_make_lsda_relative_eh_frame \ 6867 frvfdpic_elf_use_relative_eh_frame 6868 #undef elf_backend_encode_eh_address 6869 #define elf_backend_encode_eh_address \ 6870 frvfdpic_elf_encode_eh_address 6871 6872 #undef elf_backend_may_use_rel_p 6873 #define elf_backend_may_use_rel_p 1 6874 #undef elf_backend_may_use_rela_p 6875 #define elf_backend_may_use_rela_p 1 6876 /* We use REL for dynamic relocations only. */ 6877 #undef elf_backend_default_use_rela_p 6878 #define elf_backend_default_use_rela_p 1 6879 6880 #undef elf_backend_omit_section_dynsym 6881 #define elf_backend_omit_section_dynsym _frvfdpic_link_omit_section_dynsym 6882 6883 #include "elf32-target.h" 6884