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 3, /* size (0 = byte, 1 = short, 2 = long) */ 38 0, /* bitsize */ 39 FALSE, /* pc_relative */ 40 0, /* bitpos */ 41 complain_overflow_dont, /* complain_on_overflow */ 42 bfd_elf_generic_reloc, /* special_function */ 43 "R_FRV_NONE", /* name */ 44 FALSE, /* partial_inplace */ 45 0, /* src_mask */ 46 0, /* dst_mask */ 47 FALSE), /* pcrel_offset */ 48 49 /* A 32 bit absolute relocation. */ 50 HOWTO (R_FRV_32, /* type */ 51 0, /* rightshift */ 52 2, /* size (0 = byte, 1 = short, 2 = long) */ 53 32, /* bitsize */ 54 FALSE, /* pc_relative */ 55 0, /* bitpos */ 56 complain_overflow_bitfield, /* complain_on_overflow */ 57 bfd_elf_generic_reloc, /* special_function */ 58 "R_FRV_32", /* name */ 59 FALSE, /* partial_inplace */ 60 0xffffffff, /* src_mask */ 61 0xffffffff, /* dst_mask */ 62 FALSE), /* pcrel_offset */ 63 64 /* A 16 bit pc-relative relocation. */ 65 HOWTO (R_FRV_LABEL16, /* type */ 66 2, /* rightshift */ 67 2, /* size (0 = byte, 1 = short, 2 = long) */ 68 16, /* bitsize */ 69 TRUE, /* pc_relative */ 70 0, /* bitpos */ 71 complain_overflow_signed, /* complain_on_overflow */ 72 bfd_elf_generic_reloc, /* special_function */ 73 "R_FRV_LABEL16", /* name */ 74 FALSE, /* partial_inplace */ 75 0xffff, /* src_mask */ 76 0xffff, /* dst_mask */ 77 TRUE), /* pcrel_offset */ 78 79 /* A 24-bit pc-relative relocation. */ 80 HOWTO (R_FRV_LABEL24, /* type */ 81 2, /* rightshift */ 82 2, /* size (0 = byte, 1 = short, 2 = long) */ 83 26, /* bitsize */ 84 TRUE, /* pc_relative */ 85 0, /* bitpos */ 86 complain_overflow_bitfield, /* complain_on_overflow */ 87 bfd_elf_generic_reloc, /* special_function */ 88 "R_FRV_LABEL24", /* name */ 89 FALSE, /* partial_inplace */ 90 0x7e03ffff, /* src_mask */ 91 0x7e03ffff, /* dst_mask */ 92 TRUE), /* pcrel_offset */ 93 94 HOWTO (R_FRV_LO16, /* type */ 95 0, /* rightshift */ 96 2, /* size (0 = byte, 1 = short, 2 = long) */ 97 16, /* bitsize */ 98 FALSE, /* pc_relative */ 99 0, /* bitpos */ 100 complain_overflow_dont, /* complain_on_overflow */ 101 bfd_elf_generic_reloc, /* special_function */ 102 "R_FRV_LO16", /* name */ 103 FALSE, /* partial_inplace */ 104 0xffff, /* src_mask */ 105 0xffff, /* dst_mask */ 106 FALSE), /* pcrel_offset */ 107 108 HOWTO (R_FRV_HI16, /* type */ 109 0, /* rightshift */ 110 2, /* size (0 = byte, 1 = short, 2 = long) */ 111 16, /* bitsize */ 112 FALSE, /* pc_relative */ 113 0, /* bitpos */ 114 complain_overflow_dont, /* complain_on_overflow */ 115 bfd_elf_generic_reloc, /* special_function */ 116 "R_FRV_HI16", /* name */ 117 FALSE, /* partial_inplace */ 118 0xffff, /* src_mask */ 119 0xffff, /* dst_mask */ 120 FALSE), /* pcrel_offset */ 121 122 HOWTO (R_FRV_GPREL12, /* type */ 123 0, /* rightshift */ 124 2, /* size (0 = byte, 1 = short, 2 = long) */ 125 12, /* bitsize */ 126 FALSE, /* pc_relative */ 127 0, /* bitpos */ 128 complain_overflow_dont, /* complain_on_overflow */ 129 bfd_elf_generic_reloc, /* special_function */ 130 "R_FRV_GPREL12", /* name */ 131 FALSE, /* partial_inplace */ 132 0xfff, /* src_mask */ 133 0xfff, /* dst_mask */ 134 FALSE), /* pcrel_offset */ 135 136 HOWTO (R_FRV_GPRELU12, /* type */ 137 0, /* rightshift */ 138 2, /* size (0 = byte, 1 = short, 2 = long) */ 139 12, /* bitsize */ 140 FALSE, /* pc_relative */ 141 0, /* bitpos */ 142 complain_overflow_dont, /* complain_on_overflow */ 143 bfd_elf_generic_reloc, /* special_function */ 144 "R_FRV_GPRELU12", /* name */ 145 FALSE, /* partial_inplace */ 146 0xfff, /* src_mask */ 147 0x3f03f, /* dst_mask */ 148 FALSE), /* pcrel_offset */ 149 150 HOWTO (R_FRV_GPREL32, /* type */ 151 0, /* rightshift */ 152 2, /* size (0 = byte, 1 = short, 2 = long) */ 153 32, /* bitsize */ 154 FALSE, /* pc_relative */ 155 0, /* bitpos */ 156 complain_overflow_dont, /* complain_on_overflow */ 157 bfd_elf_generic_reloc, /* special_function */ 158 "R_FRV_GPREL32", /* name */ 159 FALSE, /* partial_inplace */ 160 0xffffffff, /* src_mask */ 161 0xffffffff, /* dst_mask */ 162 FALSE), /* pcrel_offset */ 163 164 HOWTO (R_FRV_GPRELHI, /* type */ 165 0, /* rightshift */ 166 2, /* size (0 = byte, 1 = short, 2 = long) */ 167 16, /* bitsize */ 168 FALSE, /* pc_relative */ 169 0, /* bitpos */ 170 complain_overflow_dont, /* complain_on_overflow */ 171 bfd_elf_generic_reloc, /* special_function */ 172 "R_FRV_GPRELHI", /* name */ 173 FALSE, /* partial_inplace */ 174 0xffff, /* src_mask */ 175 0xffff, /* dst_mask */ 176 FALSE), /* pcrel_offset */ 177 178 HOWTO (R_FRV_GPRELLO, /* type */ 179 0, /* rightshift */ 180 2, /* size (0 = byte, 1 = short, 2 = long) */ 181 16, /* bitsize */ 182 FALSE, /* pc_relative */ 183 0, /* bitpos */ 184 complain_overflow_dont, /* complain_on_overflow */ 185 bfd_elf_generic_reloc, /* special_function */ 186 "R_FRV_GPRELLO", /* name */ 187 FALSE, /* partial_inplace */ 188 0xffff, /* src_mask */ 189 0xffff, /* dst_mask */ 190 FALSE), /* pcrel_offset */ 191 192 /* A 12-bit signed operand with the GOT offset for the address of 193 the symbol. */ 194 HOWTO (R_FRV_GOT12, /* type */ 195 0, /* rightshift */ 196 2, /* size (0 = byte, 1 = short, 2 = long) */ 197 12, /* bitsize */ 198 FALSE, /* pc_relative */ 199 0, /* bitpos */ 200 complain_overflow_signed, /* complain_on_overflow */ 201 bfd_elf_generic_reloc, /* special_function */ 202 "R_FRV_GOT12", /* name */ 203 FALSE, /* partial_inplace */ 204 0xfff, /* src_mask */ 205 0xfff, /* dst_mask */ 206 FALSE), /* pcrel_offset */ 207 208 /* The upper 16 bits of the GOT offset for the address of the 209 symbol. */ 210 HOWTO (R_FRV_GOTHI, /* type */ 211 0, /* rightshift */ 212 2, /* size (0 = byte, 1 = short, 2 = long) */ 213 16, /* bitsize */ 214 FALSE, /* pc_relative */ 215 0, /* bitpos */ 216 complain_overflow_dont, /* complain_on_overflow */ 217 bfd_elf_generic_reloc, /* special_function */ 218 "R_FRV_GOTHI", /* name */ 219 FALSE, /* partial_inplace */ 220 0xffff, /* src_mask */ 221 0xffff, /* dst_mask */ 222 FALSE), /* pcrel_offset */ 223 224 /* The lower 16 bits of the GOT offset for the address of the 225 symbol. */ 226 HOWTO (R_FRV_GOTLO, /* type */ 227 0, /* rightshift */ 228 2, /* size (0 = byte, 1 = short, 2 = long) */ 229 16, /* bitsize */ 230 FALSE, /* pc_relative */ 231 0, /* bitpos */ 232 complain_overflow_dont, /* complain_on_overflow */ 233 bfd_elf_generic_reloc, /* special_function */ 234 "R_FRV_GOTLO", /* name */ 235 FALSE, /* partial_inplace */ 236 0xffff, /* src_mask */ 237 0xffff, /* dst_mask */ 238 FALSE), /* pcrel_offset */ 239 240 /* The 32-bit address of the canonical descriptor of a function. */ 241 HOWTO (R_FRV_FUNCDESC, /* type */ 242 0, /* rightshift */ 243 2, /* size (0 = byte, 1 = short, 2 = long) */ 244 32, /* bitsize */ 245 FALSE, /* pc_relative */ 246 0, /* bitpos */ 247 complain_overflow_bitfield, /* complain_on_overflow */ 248 bfd_elf_generic_reloc, /* special_function */ 249 "R_FRV_FUNCDESC", /* name */ 250 FALSE, /* partial_inplace */ 251 0xffffffff, /* src_mask */ 252 0xffffffff, /* dst_mask */ 253 FALSE), /* pcrel_offset */ 254 255 /* A 12-bit signed operand with the GOT offset for the address of 256 canonical descriptor of a function. */ 257 HOWTO (R_FRV_FUNCDESC_GOT12, /* type */ 258 0, /* rightshift */ 259 2, /* size (0 = byte, 1 = short, 2 = long) */ 260 12, /* bitsize */ 261 FALSE, /* pc_relative */ 262 0, /* bitpos */ 263 complain_overflow_signed, /* complain_on_overflow */ 264 bfd_elf_generic_reloc, /* special_function */ 265 "R_FRV_FUNCDESC_GOT12", /* name */ 266 FALSE, /* partial_inplace */ 267 0xfff, /* src_mask */ 268 0xfff, /* dst_mask */ 269 FALSE), /* pcrel_offset */ 270 271 /* The upper 16 bits of the GOT offset for the address of the 272 canonical descriptor of a function. */ 273 HOWTO (R_FRV_FUNCDESC_GOTHI, /* type */ 274 0, /* rightshift */ 275 2, /* size (0 = byte, 1 = short, 2 = long) */ 276 16, /* bitsize */ 277 FALSE, /* pc_relative */ 278 0, /* bitpos */ 279 complain_overflow_dont, /* complain_on_overflow */ 280 bfd_elf_generic_reloc, /* special_function */ 281 "R_FRV_FUNCDESC_GOTHI", /* name */ 282 FALSE, /* partial_inplace */ 283 0xffff, /* src_mask */ 284 0xffff, /* dst_mask */ 285 FALSE), /* pcrel_offset */ 286 287 /* The lower 16 bits of the GOT offset for the address of the 288 canonical descriptor of a function. */ 289 HOWTO (R_FRV_FUNCDESC_GOTLO, /* type */ 290 0, /* rightshift */ 291 2, /* size (0 = byte, 1 = short, 2 = long) */ 292 16, /* bitsize */ 293 FALSE, /* pc_relative */ 294 0, /* bitpos */ 295 complain_overflow_dont, /* complain_on_overflow */ 296 bfd_elf_generic_reloc, /* special_function */ 297 "R_FRV_FUNCDESC_GOTLO", /* name */ 298 FALSE, /* partial_inplace */ 299 0xffff, /* src_mask */ 300 0xffff, /* dst_mask */ 301 FALSE), /* pcrel_offset */ 302 303 /* The 64-bit descriptor of a function. */ 304 HOWTO (R_FRV_FUNCDESC_VALUE, /* type */ 305 0, /* rightshift */ 306 2, /* size (0 = byte, 1 = short, 2 = long) */ 307 64, /* bitsize */ 308 FALSE, /* pc_relative */ 309 0, /* bitpos */ 310 complain_overflow_bitfield, /* complain_on_overflow */ 311 bfd_elf_generic_reloc, /* special_function */ 312 "R_FRV_FUNCDESC_VALUE", /* name */ 313 FALSE, /* partial_inplace */ 314 0xffffffff, /* src_mask */ 315 0xffffffff, /* dst_mask */ 316 FALSE), /* pcrel_offset */ 317 318 /* A 12-bit signed operand with the GOT offset for the address of 319 canonical descriptor of a function. */ 320 HOWTO (R_FRV_FUNCDESC_GOTOFF12, /* type */ 321 0, /* rightshift */ 322 2, /* size (0 = byte, 1 = short, 2 = long) */ 323 12, /* bitsize */ 324 FALSE, /* pc_relative */ 325 0, /* bitpos */ 326 complain_overflow_signed, /* complain_on_overflow */ 327 bfd_elf_generic_reloc, /* special_function */ 328 "R_FRV_FUNCDESC_GOTOFF12", /* name */ 329 FALSE, /* partial_inplace */ 330 0xfff, /* src_mask */ 331 0xfff, /* dst_mask */ 332 FALSE), /* pcrel_offset */ 333 334 /* The upper 16 bits of the GOT offset for the address of the 335 canonical descriptor of a function. */ 336 HOWTO (R_FRV_FUNCDESC_GOTOFFHI, /* type */ 337 0, /* rightshift */ 338 2, /* size (0 = byte, 1 = short, 2 = long) */ 339 16, /* bitsize */ 340 FALSE, /* pc_relative */ 341 0, /* bitpos */ 342 complain_overflow_dont, /* complain_on_overflow */ 343 bfd_elf_generic_reloc, /* special_function */ 344 "R_FRV_FUNCDESC_GOTOFFHI", /* name */ 345 FALSE, /* partial_inplace */ 346 0xffff, /* src_mask */ 347 0xffff, /* dst_mask */ 348 FALSE), /* pcrel_offset */ 349 350 /* The lower 16 bits of the GOT offset for the address of the 351 canonical descriptor of a function. */ 352 HOWTO (R_FRV_FUNCDESC_GOTOFFLO, /* type */ 353 0, /* rightshift */ 354 2, /* size (0 = byte, 1 = short, 2 = long) */ 355 16, /* bitsize */ 356 FALSE, /* pc_relative */ 357 0, /* bitpos */ 358 complain_overflow_dont, /* complain_on_overflow */ 359 bfd_elf_generic_reloc, /* special_function */ 360 "R_FRV_FUNCDESC_GOTOFFLO", /* name */ 361 FALSE, /* partial_inplace */ 362 0xffff, /* src_mask */ 363 0xffff, /* dst_mask */ 364 FALSE), /* pcrel_offset */ 365 366 /* A 12-bit signed operand with the GOT offset for the address of 367 the symbol. */ 368 HOWTO (R_FRV_GOTOFF12, /* type */ 369 0, /* rightshift */ 370 2, /* size (0 = byte, 1 = short, 2 = long) */ 371 12, /* bitsize */ 372 FALSE, /* pc_relative */ 373 0, /* bitpos */ 374 complain_overflow_signed, /* complain_on_overflow */ 375 bfd_elf_generic_reloc, /* special_function */ 376 "R_FRV_GOTOFF12", /* name */ 377 FALSE, /* partial_inplace */ 378 0xfff, /* src_mask */ 379 0xfff, /* dst_mask */ 380 FALSE), /* pcrel_offset */ 381 382 /* The upper 16 bits of the GOT offset for the address of the 383 symbol. */ 384 HOWTO (R_FRV_GOTOFFHI, /* type */ 385 0, /* rightshift */ 386 2, /* size (0 = byte, 1 = short, 2 = long) */ 387 16, /* bitsize */ 388 FALSE, /* pc_relative */ 389 0, /* bitpos */ 390 complain_overflow_dont, /* complain_on_overflow */ 391 bfd_elf_generic_reloc, /* special_function */ 392 "R_FRV_GOTOFFHI", /* name */ 393 FALSE, /* partial_inplace */ 394 0xffff, /* src_mask */ 395 0xffff, /* dst_mask */ 396 FALSE), /* pcrel_offset */ 397 398 /* The lower 16 bits of the GOT offset for the address of the 399 symbol. */ 400 HOWTO (R_FRV_GOTOFFLO, /* type */ 401 0, /* rightshift */ 402 2, /* size (0 = byte, 1 = short, 2 = long) */ 403 16, /* bitsize */ 404 FALSE, /* pc_relative */ 405 0, /* bitpos */ 406 complain_overflow_dont, /* complain_on_overflow */ 407 bfd_elf_generic_reloc, /* special_function */ 408 "R_FRV_GOTOFFLO", /* name */ 409 FALSE, /* partial_inplace */ 410 0xffff, /* src_mask */ 411 0xffff, /* dst_mask */ 412 FALSE), /* pcrel_offset */ 413 414 /* A 24-bit pc-relative relocation referencing the TLS PLT entry for 415 a thread-local symbol. If the symbol number is 0, it refers to 416 the module. */ 417 HOWTO (R_FRV_GETTLSOFF, /* type */ 418 2, /* rightshift */ 419 2, /* size (0 = byte, 1 = short, 2 = long) */ 420 26, /* bitsize */ 421 TRUE, /* pc_relative */ 422 0, /* bitpos */ 423 complain_overflow_bitfield, /* complain_on_overflow */ 424 bfd_elf_generic_reloc, /* special_function */ 425 "R_FRV_GETTLSOFF", /* name */ 426 FALSE, /* partial_inplace */ 427 0x7e03ffff, /* src_mask */ 428 0x7e03ffff, /* dst_mask */ 429 TRUE), /* pcrel_offset */ 430 431 /* A 64-bit TLS descriptor for a symbol. This relocation is only 432 valid as a REL, dynamic relocation. */ 433 HOWTO (R_FRV_TLSDESC_VALUE, /* type */ 434 0, /* rightshift */ 435 2, /* size (0 = byte, 1 = short, 2 = long) */ 436 64, /* bitsize */ 437 FALSE, /* pc_relative */ 438 0, /* bitpos */ 439 complain_overflow_bitfield, /* complain_on_overflow */ 440 bfd_elf_generic_reloc, /* special_function */ 441 "R_FRV_TLSDESC_VALUE", /* name */ 442 FALSE, /* partial_inplace */ 443 0xffffffff, /* src_mask */ 444 0xffffffff, /* dst_mask */ 445 FALSE), /* pcrel_offset */ 446 447 /* A 12-bit signed operand with the GOT offset for the TLS 448 descriptor of the symbol. */ 449 HOWTO (R_FRV_GOTTLSDESC12, /* type */ 450 0, /* rightshift */ 451 2, /* size (0 = byte, 1 = short, 2 = long) */ 452 12, /* bitsize */ 453 FALSE, /* pc_relative */ 454 0, /* bitpos */ 455 complain_overflow_signed, /* complain_on_overflow */ 456 bfd_elf_generic_reloc, /* special_function */ 457 "R_FRV_GOTTLSDESC12", /* name */ 458 FALSE, /* partial_inplace */ 459 0xfff, /* src_mask */ 460 0xfff, /* dst_mask */ 461 FALSE), /* pcrel_offset */ 462 463 /* The upper 16 bits of the GOT offset for the TLS descriptor of the 464 symbol. */ 465 HOWTO (R_FRV_GOTTLSDESCHI, /* type */ 466 0, /* rightshift */ 467 2, /* size (0 = byte, 1 = short, 2 = long) */ 468 16, /* bitsize */ 469 FALSE, /* pc_relative */ 470 0, /* bitpos */ 471 complain_overflow_dont, /* complain_on_overflow */ 472 bfd_elf_generic_reloc, /* special_function */ 473 "R_FRV_GOTTLSDESCHI", /* name */ 474 FALSE, /* partial_inplace */ 475 0xffff, /* src_mask */ 476 0xffff, /* dst_mask */ 477 FALSE), /* pcrel_offset */ 478 479 /* The lower 16 bits of the GOT offset for the TLS descriptor of the 480 symbol. */ 481 HOWTO (R_FRV_GOTTLSDESCLO, /* type */ 482 0, /* rightshift */ 483 2, /* size (0 = byte, 1 = short, 2 = long) */ 484 16, /* bitsize */ 485 FALSE, /* pc_relative */ 486 0, /* bitpos */ 487 complain_overflow_dont, /* complain_on_overflow */ 488 bfd_elf_generic_reloc, /* special_function */ 489 "R_FRV_GOTTLSDESCLO", /* name */ 490 FALSE, /* partial_inplace */ 491 0xffff, /* src_mask */ 492 0xffff, /* dst_mask */ 493 FALSE), /* pcrel_offset */ 494 495 /* A 12-bit signed operand with the offset from the module base 496 address to the thread-local symbol address. */ 497 HOWTO (R_FRV_TLSMOFF12, /* type */ 498 0, /* rightshift */ 499 2, /* size (0 = byte, 1 = short, 2 = long) */ 500 12, /* bitsize */ 501 FALSE, /* pc_relative */ 502 0, /* bitpos */ 503 complain_overflow_signed, /* complain_on_overflow */ 504 bfd_elf_generic_reloc, /* special_function */ 505 "R_FRV_TLSMOFF12", /* name */ 506 FALSE, /* partial_inplace */ 507 0xfff, /* src_mask */ 508 0xfff, /* dst_mask */ 509 FALSE), /* pcrel_offset */ 510 511 /* The upper 16 bits of the offset from the module base address to 512 the thread-local symbol address. */ 513 HOWTO (R_FRV_TLSMOFFHI, /* type */ 514 0, /* rightshift */ 515 2, /* size (0 = byte, 1 = short, 2 = long) */ 516 16, /* bitsize */ 517 FALSE, /* pc_relative */ 518 0, /* bitpos */ 519 complain_overflow_dont, /* complain_on_overflow */ 520 bfd_elf_generic_reloc, /* special_function */ 521 "R_FRV_TLSMOFFHI", /* name */ 522 FALSE, /* partial_inplace */ 523 0xffff, /* src_mask */ 524 0xffff, /* dst_mask */ 525 FALSE), /* pcrel_offset */ 526 527 /* The lower 16 bits of the offset from the module base address to 528 the thread-local symbol address. */ 529 HOWTO (R_FRV_TLSMOFFLO, /* type */ 530 0, /* rightshift */ 531 2, /* size (0 = byte, 1 = short, 2 = long) */ 532 16, /* bitsize */ 533 FALSE, /* pc_relative */ 534 0, /* bitpos */ 535 complain_overflow_dont, /* complain_on_overflow */ 536 bfd_elf_generic_reloc, /* special_function */ 537 "R_FRV_TLSMOFFLO", /* name */ 538 FALSE, /* partial_inplace */ 539 0xffff, /* src_mask */ 540 0xffff, /* dst_mask */ 541 FALSE), /* pcrel_offset */ 542 543 /* A 12-bit signed operand with the GOT offset for the TLSOFF entry 544 for a symbol. */ 545 HOWTO (R_FRV_GOTTLSOFF12, /* type */ 546 0, /* rightshift */ 547 2, /* size (0 = byte, 1 = short, 2 = long) */ 548 12, /* bitsize */ 549 FALSE, /* pc_relative */ 550 0, /* bitpos */ 551 complain_overflow_signed, /* complain_on_overflow */ 552 bfd_elf_generic_reloc, /* special_function */ 553 "R_FRV_GOTTLSOFF12", /* name */ 554 FALSE, /* partial_inplace */ 555 0xfff, /* src_mask */ 556 0xfff, /* dst_mask */ 557 FALSE), /* pcrel_offset */ 558 559 /* The upper 16 bits of the GOT offset for the TLSOFF entry for a 560 symbol. */ 561 HOWTO (R_FRV_GOTTLSOFFHI, /* type */ 562 0, /* rightshift */ 563 2, /* size (0 = byte, 1 = short, 2 = long) */ 564 16, /* bitsize */ 565 FALSE, /* pc_relative */ 566 0, /* bitpos */ 567 complain_overflow_dont, /* complain_on_overflow */ 568 bfd_elf_generic_reloc, /* special_function */ 569 "R_FRV_GOTTLSOFFHI", /* name */ 570 FALSE, /* partial_inplace */ 571 0xffff, /* src_mask */ 572 0xffff, /* dst_mask */ 573 FALSE), /* pcrel_offset */ 574 575 /* The lower 16 bits of the GOT offset for the TLSOFF entry for a 576 symbol. */ 577 HOWTO (R_FRV_GOTTLSOFFLO, /* type */ 578 0, /* rightshift */ 579 2, /* size (0 = byte, 1 = short, 2 = long) */ 580 16, /* bitsize */ 581 FALSE, /* pc_relative */ 582 0, /* bitpos */ 583 complain_overflow_dont, /* complain_on_overflow */ 584 bfd_elf_generic_reloc, /* special_function */ 585 "R_FRV_GOTTLSOFFLO", /* name */ 586 FALSE, /* partial_inplace */ 587 0xffff, /* src_mask */ 588 0xffff, /* dst_mask */ 589 FALSE), /* pcrel_offset */ 590 591 /* The 32-bit offset from the thread pointer (not the module base 592 address) to a thread-local symbol. */ 593 HOWTO (R_FRV_TLSOFF, /* type */ 594 0, /* rightshift */ 595 2, /* size (0 = byte, 1 = short, 2 = long) */ 596 32, /* bitsize */ 597 FALSE, /* pc_relative */ 598 0, /* bitpos */ 599 complain_overflow_dont, /* complain_on_overflow */ 600 bfd_elf_generic_reloc, /* special_function */ 601 "R_FRV_TLSOFF", /* name */ 602 FALSE, /* partial_inplace */ 603 0xffffffff, /* src_mask */ 604 0xffffffff, /* dst_mask */ 605 FALSE), /* pcrel_offset */ 606 607 /* An annotation for linker relaxation, that denotes the 608 symbol+addend whose TLS descriptor is referenced by the sum of 609 the two input registers of an ldd instruction. */ 610 HOWTO (R_FRV_TLSDESC_RELAX, /* type */ 611 0, /* rightshift */ 612 2, /* size (0 = byte, 1 = short, 2 = long) */ 613 0, /* bitsize */ 614 FALSE, /* pc_relative */ 615 0, /* bitpos */ 616 complain_overflow_dont, /* complain_on_overflow */ 617 bfd_elf_generic_reloc, /* special_function */ 618 "R_FRV_TLSDESC_RELAX", /* name */ 619 FALSE, /* partial_inplace */ 620 0, /* src_mask */ 621 0, /* dst_mask */ 622 FALSE), /* pcrel_offset */ 623 624 /* An annotation for linker relaxation, that denotes the 625 symbol+addend whose TLS resolver entry point is given by the sum 626 of the two register operands of an calll instruction. */ 627 HOWTO (R_FRV_GETTLSOFF_RELAX, /* type */ 628 0, /* rightshift */ 629 2, /* size (0 = byte, 1 = short, 2 = long) */ 630 0, /* bitsize */ 631 FALSE, /* pc_relative */ 632 0, /* bitpos */ 633 complain_overflow_dont, /* complain_on_overflow */ 634 bfd_elf_generic_reloc, /* special_function */ 635 "R_FRV_GETTLSOFF_RELAX", /* name */ 636 FALSE, /* partial_inplace */ 637 0, /* src_mask */ 638 0, /* dst_mask */ 639 FALSE), /* pcrel_offset */ 640 641 /* An annotation for linker relaxation, that denotes the 642 symbol+addend whose TLS offset GOT entry is given by the sum of 643 the two input registers of an ld instruction. */ 644 HOWTO (R_FRV_TLSOFF_RELAX, /* type */ 645 0, /* rightshift */ 646 2, /* size (0 = byte, 1 = short, 2 = long) */ 647 0, /* bitsize */ 648 FALSE, /* pc_relative */ 649 0, /* bitpos */ 650 complain_overflow_bitfield, /* complain_on_overflow */ 651 bfd_elf_generic_reloc, /* special_function */ 652 "R_FRV_TLSOFF_RELAX", /* name */ 653 FALSE, /* partial_inplace */ 654 0, /* src_mask */ 655 0, /* dst_mask */ 656 FALSE), /* pcrel_offset */ 657 658 /* A 32-bit offset from the module base address to 659 the thread-local symbol address. */ 660 HOWTO (R_FRV_TLSMOFF, /* type */ 661 0, /* rightshift */ 662 2, /* size (0 = byte, 1 = short, 2 = long) */ 663 32, /* bitsize */ 664 FALSE, /* pc_relative */ 665 0, /* bitpos */ 666 complain_overflow_dont, /* complain_on_overflow */ 667 bfd_elf_generic_reloc, /* special_function */ 668 "R_FRV_TLSMOFF", /* name */ 669 FALSE, /* partial_inplace */ 670 0xffffffff, /* src_mask */ 671 0xffffffff, /* dst_mask */ 672 FALSE), /* pcrel_offset */ 673 }; 674 675 /* GNU extension to record C++ vtable hierarchy. */ 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 (bfd_link_pde (info) 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 && !bfd_link_pde (info)) 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 (bfd_link_pde (info) 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 (bfd_link_pde (info) 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 (bfd_link_pde (info) 1597 && sec 1598 && sec->output_section) 1599 { 1600 lowword = ad; 1601 highword = frvfdpic_got_section (info)->output_section->vma 1602 + frvfdpic_got_section (info)->output_offset 1603 + frvfdpic_got_initial_offset (info); 1604 } 1605 else if (entry->lazyplt) 1606 { 1607 if (ad) 1608 { 1609 (*info->callbacks->reloc_dangerous) 1610 (info, _("relocation requires zero addend"), 1611 elf_hash_table (info)->dynobj, 1612 frvfdpic_got_section (info), 1613 entry->fd_entry); 1614 return FALSE; 1615 } 1616 1617 fd_lazy_rel_offset = ofst; 1618 1619 /* A function descriptor used for lazy or local resolving is 1620 initialized such that its high word contains the output 1621 section index in which the PLT entries are located, and 1622 the low word contains the address of the lazy PLT entry 1623 entry point, that must be within the memory region 1624 assigned to that section. */ 1625 lowword = entry->lzplt_entry + 4 1626 + frvfdpic_plt_section (info)->output_offset 1627 + frvfdpic_plt_section (info)->output_section->vma; 1628 highword = _frvfdpic_osec_to_segment 1629 (output_bfd, frvfdpic_plt_section (info)->output_section); 1630 } 1631 else 1632 { 1633 /* A function descriptor for a local function gets the index 1634 of the section. For a non-local function, it's 1635 disregarded. */ 1636 lowword = ad; 1637 if (sec == NULL 1638 || (entry->symndx == -1 && entry->d.h->dynindx != -1 1639 && entry->d.h->dynindx == idx)) 1640 highword = 0; 1641 else 1642 highword = _frvfdpic_osec_to_segment 1643 (output_bfd, sec->output_section); 1644 } 1645 1646 bfd_put_32 (output_bfd, lowword, 1647 frvfdpic_got_section (info)->contents 1648 + frvfdpic_got_initial_offset (info) 1649 + entry->fd_entry); 1650 bfd_put_32 (output_bfd, highword, 1651 frvfdpic_got_section (info)->contents 1652 + frvfdpic_got_initial_offset (info) 1653 + entry->fd_entry + 4); 1654 } 1655 1656 /* Generate code for the PLT entry. */ 1657 if (entry->plt_entry != (bfd_vma) -1) 1658 { 1659 bfd_byte *plt_code = frvfdpic_plt_section (info)->contents 1660 + entry->plt_entry; 1661 1662 BFD_ASSERT (entry->fd_entry); 1663 1664 /* Figure out what kind of PLT entry we need, depending on the 1665 location of the function descriptor within the GOT. */ 1666 if (entry->fd_entry >= -(1 << (12 - 1)) 1667 && entry->fd_entry < (1 << (12 - 1))) 1668 { 1669 /* lddi @(gr15, fd_entry), gr14 */ 1670 bfd_put_32 (output_bfd, 1671 0x9cccf000 | (entry->fd_entry & ((1 << 12) - 1)), 1672 plt_code); 1673 plt_code += 4; 1674 } 1675 else 1676 { 1677 if (entry->fd_entry >= -(1 << (16 - 1)) 1678 && entry->fd_entry < (1 << (16 - 1))) 1679 { 1680 /* setlos lo(fd_entry), gr14 */ 1681 bfd_put_32 (output_bfd, 1682 0x9cfc0000 1683 | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)), 1684 plt_code); 1685 plt_code += 4; 1686 } 1687 else 1688 { 1689 /* sethi.p hi(fd_entry), gr14 1690 setlo lo(fd_entry), gr14 */ 1691 bfd_put_32 (output_bfd, 1692 0x1cf80000 1693 | ((entry->fd_entry >> 16) 1694 & (((bfd_vma)1 << 16) - 1)), 1695 plt_code); 1696 plt_code += 4; 1697 bfd_put_32 (output_bfd, 1698 0x9cf40000 1699 | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)), 1700 plt_code); 1701 plt_code += 4; 1702 } 1703 /* ldd @(gr14,gr15),gr14 */ 1704 bfd_put_32 (output_bfd, 0x9c08e14f, plt_code); 1705 plt_code += 4; 1706 } 1707 /* jmpl @(gr14,gr0) */ 1708 bfd_put_32 (output_bfd, 0x8030e000, plt_code); 1709 } 1710 1711 /* Generate code for the lazy PLT entry. */ 1712 if (entry->lzplt_entry != (bfd_vma) -1) 1713 { 1714 bfd_byte *lzplt_code = frvfdpic_plt_section (info)->contents 1715 + entry->lzplt_entry; 1716 bfd_vma resolverStub_addr; 1717 1718 bfd_put_32 (output_bfd, fd_lazy_rel_offset, lzplt_code); 1719 lzplt_code += 4; 1720 1721 resolverStub_addr = entry->lzplt_entry / FRVFDPIC_LZPLT_BLOCK_SIZE 1722 * FRVFDPIC_LZPLT_BLOCK_SIZE + FRVFDPIC_LZPLT_RESOLV_LOC; 1723 if (resolverStub_addr >= frvfdpic_plt_initial_offset (info)) 1724 resolverStub_addr = frvfdpic_plt_initial_offset (info) - 12; 1725 1726 if (entry->lzplt_entry == resolverStub_addr) 1727 { 1728 /* This is a lazy PLT entry that includes a resolver call. */ 1729 /* ldd @(gr15,gr0), gr4 1730 jmpl @(gr4,gr0) */ 1731 bfd_put_32 (output_bfd, 0x8808f140, lzplt_code); 1732 bfd_put_32 (output_bfd, 0x80304000, lzplt_code + 4); 1733 } 1734 else 1735 { 1736 /* bra resolverStub */ 1737 bfd_put_32 (output_bfd, 1738 0xc01a0000 1739 | (((resolverStub_addr - entry->lzplt_entry) 1740 / 4) & (((bfd_vma)1 << 16) - 1)), 1741 lzplt_code); 1742 } 1743 } 1744 1745 /* Generate relocation for GOT entry holding the TLS offset. */ 1746 if (entry->tlsoff_entry) 1747 { 1748 int idx = dynindx; 1749 bfd_vma ad = addend; 1750 1751 if (entry->symndx != -1 1752 || FRVFDPIC_SYM_LOCAL (info, entry->d.h)) 1753 { 1754 /* If the symbol is dynamic but binds locally, use 1755 section+offset. */ 1756 if (sec) 1757 { 1758 if (entry->symndx == -1) 1759 ad += entry->d.h->root.u.def.value; 1760 else 1761 ad += sym->st_value; 1762 ad += sec->output_offset; 1763 if (sec->output_section 1764 && elf_section_data (sec->output_section)) 1765 idx = elf_section_data (sec->output_section)->dynindx; 1766 else 1767 idx = 0; 1768 } 1769 } 1770 1771 /* *ABS*+addend is special for TLS relocations, use only the 1772 addend. */ 1773 if (bfd_link_executable (info) 1774 && idx == 0 1775 && (bfd_is_abs_section (sec) 1776 || bfd_is_und_section (sec))) 1777 ; 1778 /* If we're linking an executable, we can entirely omit the 1779 dynamic relocation if the symbol is local to this module. */ 1780 else if (bfd_link_executable (info) 1781 && (entry->symndx != -1 1782 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1783 { 1784 if (sec) 1785 ad += sec->output_section->vma - tls_biased_base (info); 1786 } 1787 else 1788 { 1789 if (idx == 0 1790 && (bfd_is_abs_section (sec) 1791 || bfd_is_und_section (sec))) 1792 { 1793 if (! elf_hash_table (info)->tls_sec) 1794 { 1795 (*info->callbacks->undefined_symbol) 1796 (info, "TLS section", elf_hash_table (info)->dynobj, 1797 frvfdpic_got_section (info), entry->tlsoff_entry, TRUE); 1798 return FALSE; 1799 } 1800 idx = elf_section_data (elf_hash_table (info)->tls_sec)->dynindx; 1801 ad += FRVFDPIC_TLS_BIAS; 1802 } 1803 _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), 1804 _bfd_elf_section_offset 1805 (output_bfd, info, 1806 frvfdpic_got_section (info), 1807 frvfdpic_got_initial_offset (info) 1808 + entry->tlsoff_entry) 1809 + frvfdpic_got_section (info) 1810 ->output_section->vma 1811 + frvfdpic_got_section (info) 1812 ->output_offset, 1813 R_FRV_TLSOFF, idx, ad, entry); 1814 } 1815 1816 bfd_put_32 (output_bfd, ad, 1817 frvfdpic_got_section (info)->contents 1818 + frvfdpic_got_initial_offset (info) 1819 + entry->tlsoff_entry); 1820 } 1821 1822 if (entry->tlsdesc_entry) 1823 { 1824 int idx = dynindx; 1825 bfd_vma ad = addend; 1826 1827 /* If the symbol is dynamic but binds locally, use 1828 section+offset. */ 1829 if (sec && (entry->symndx != -1 1830 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1831 { 1832 if (entry->symndx == -1) 1833 ad += entry->d.h->root.u.def.value; 1834 else 1835 ad += sym->st_value; 1836 ad += sec->output_offset; 1837 if (sec->output_section && elf_section_data (sec->output_section)) 1838 idx = elf_section_data (sec->output_section)->dynindx; 1839 else 1840 idx = 0; 1841 } 1842 1843 /* If we didn't set up a TLS offset entry, but we're linking an 1844 executable and the symbol binds locally, we can use the 1845 module offset in the TLS descriptor in relaxations. */ 1846 if (bfd_link_executable (info) && ! entry->tlsoff_entry) 1847 entry->tlsoff_entry = entry->tlsdesc_entry + 4; 1848 1849 if (bfd_link_pde (info) 1850 && ((idx == 0 1851 && (bfd_is_abs_section (sec) 1852 || bfd_is_und_section (sec))) 1853 || entry->symndx != -1 1854 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1855 { 1856 /* *ABS*+addend is special for TLS relocations, use only the 1857 addend for the TLS offset, and take the module id as 1858 0. */ 1859 if (idx == 0 1860 && (bfd_is_abs_section (sec) 1861 || bfd_is_und_section (sec))) 1862 ; 1863 /* For other TLS symbols that bind locally, add the section 1864 TLS offset to the addend. */ 1865 else if (sec) 1866 ad += sec->output_section->vma - tls_biased_base (info); 1867 1868 bfd_put_32 (output_bfd, 1869 frvfdpic_plt_section (info)->output_section->vma 1870 + frvfdpic_plt_section (info)->output_offset 1871 + frvfdpic_plt_tls_ret_offset (info), 1872 frvfdpic_got_section (info)->contents 1873 + frvfdpic_got_initial_offset (info) 1874 + entry->tlsdesc_entry); 1875 1876 _frvfdpic_add_rofixup (output_bfd, 1877 frvfdpic_gotfixup_section (info), 1878 frvfdpic_got_section (info) 1879 ->output_section->vma 1880 + frvfdpic_got_section (info) 1881 ->output_offset 1882 + frvfdpic_got_initial_offset (info) 1883 + entry->tlsdesc_entry, entry); 1884 1885 BFD_ASSERT (frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs); 1886 1887 /* We've used one of the reserved fixups, so discount it so 1888 that we can check at the end that we've used them 1889 all. */ 1890 frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs--; 1891 1892 /* While at that, make sure the ret instruction makes to the 1893 right location in the PLT. We could do it only when we 1894 got to 0, but since the check at the end will only print 1895 a warning, make sure we have the ret in place in case the 1896 warning is missed. */ 1897 bfd_put_32 (output_bfd, 0xc03a4000, 1898 frvfdpic_plt_section (info)->contents 1899 + frvfdpic_plt_tls_ret_offset (info)); 1900 } 1901 else 1902 { 1903 if (idx == 0 1904 && (bfd_is_abs_section (sec) 1905 || bfd_is_und_section (sec))) 1906 { 1907 if (! elf_hash_table (info)->tls_sec) 1908 { 1909 (*info->callbacks->undefined_symbol) 1910 (info, "TLS section", elf_hash_table (info)->dynobj, 1911 frvfdpic_got_section (info), entry->tlsdesc_entry, TRUE); 1912 return FALSE; 1913 } 1914 idx = elf_section_data (elf_hash_table (info)->tls_sec)->dynindx; 1915 ad += FRVFDPIC_TLS_BIAS; 1916 } 1917 1918 _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), 1919 _bfd_elf_section_offset 1920 (output_bfd, info, 1921 frvfdpic_got_section (info), 1922 frvfdpic_got_initial_offset (info) 1923 + entry->tlsdesc_entry) 1924 + frvfdpic_got_section (info) 1925 ->output_section->vma 1926 + frvfdpic_got_section (info) 1927 ->output_offset, 1928 R_FRV_TLSDESC_VALUE, idx, ad, entry); 1929 1930 bfd_put_32 (output_bfd, 0, 1931 frvfdpic_got_section (info)->contents 1932 + frvfdpic_got_initial_offset (info) 1933 + entry->tlsdesc_entry); 1934 } 1935 1936 bfd_put_32 (output_bfd, ad, 1937 frvfdpic_got_section (info)->contents 1938 + frvfdpic_got_initial_offset (info) 1939 + entry->tlsdesc_entry + 4); 1940 } 1941 1942 /* Generate code for the get-TLS-offset PLT entry. */ 1943 if (entry->tlsplt_entry != (bfd_vma) -1) 1944 { 1945 bfd_byte *plt_code = frvfdpic_plt_section (info)->contents 1946 + entry->tlsplt_entry; 1947 1948 if (bfd_link_executable (info) 1949 && (entry->symndx != -1 1950 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1951 { 1952 int idx = dynindx; 1953 bfd_vma ad = addend; 1954 1955 /* sec may be NULL when referencing an undefweak symbol 1956 while linking a static executable. */ 1957 if (!sec) 1958 { 1959 BFD_ASSERT (entry->symndx == -1 1960 && entry->d.h->root.type == bfd_link_hash_undefweak); 1961 } 1962 else 1963 { 1964 if (entry->symndx == -1) 1965 ad += entry->d.h->root.u.def.value; 1966 else 1967 ad += sym->st_value; 1968 ad += sec->output_offset; 1969 if (sec->output_section 1970 && elf_section_data (sec->output_section)) 1971 idx = elf_section_data (sec->output_section)->dynindx; 1972 else 1973 idx = 0; 1974 } 1975 1976 /* *ABS*+addend is special for TLS relocations, use only the 1977 addend for the TLS offset, and take the module id as 1978 0. */ 1979 if (idx == 0 1980 && (bfd_is_abs_section (sec) 1981 || bfd_is_und_section (sec))) 1982 ; 1983 /* For other TLS symbols that bind locally, add the section 1984 TLS offset to the addend. */ 1985 else if (sec) 1986 ad += sec->output_section->vma - tls_biased_base (info); 1987 1988 if ((bfd_signed_vma)ad >= -(1 << (16 - 1)) 1989 && (bfd_signed_vma)ad < (1 << (16 - 1))) 1990 { 1991 /* setlos lo(ad), gr9 */ 1992 bfd_put_32 (output_bfd, 1993 0x92fc0000 1994 | (ad 1995 & (((bfd_vma)1 << 16) - 1)), 1996 plt_code); 1997 plt_code += 4; 1998 } 1999 else 2000 { 2001 /* sethi.p hi(ad), gr9 2002 setlo lo(ad), gr9 */ 2003 bfd_put_32 (output_bfd, 2004 0x12f80000 2005 | ((ad >> 16) 2006 & (((bfd_vma)1 << 16) - 1)), 2007 plt_code); 2008 plt_code += 4; 2009 bfd_put_32 (output_bfd, 2010 0x92f40000 2011 | (ad 2012 & (((bfd_vma)1 << 16) - 1)), 2013 plt_code); 2014 plt_code += 4; 2015 } 2016 /* ret */ 2017 bfd_put_32 (output_bfd, 0xc03a4000, plt_code); 2018 } 2019 else if (entry->tlsoff_entry) 2020 { 2021 /* Figure out what kind of PLT entry we need, depending on the 2022 location of the TLS descriptor within the GOT. */ 2023 if (entry->tlsoff_entry >= -(1 << (12 - 1)) 2024 && entry->tlsoff_entry < (1 << (12 - 1))) 2025 { 2026 /* ldi @(gr15, tlsoff_entry), gr9 */ 2027 bfd_put_32 (output_bfd, 2028 0x92c8f000 | (entry->tlsoff_entry 2029 & ((1 << 12) - 1)), 2030 plt_code); 2031 plt_code += 4; 2032 } 2033 else 2034 { 2035 if (entry->tlsoff_entry >= -(1 << (16 - 1)) 2036 && entry->tlsoff_entry < (1 << (16 - 1))) 2037 { 2038 /* setlos lo(tlsoff_entry), gr8 */ 2039 bfd_put_32 (output_bfd, 2040 0x90fc0000 2041 | (entry->tlsoff_entry 2042 & (((bfd_vma)1 << 16) - 1)), 2043 plt_code); 2044 plt_code += 4; 2045 } 2046 else 2047 { 2048 /* sethi.p hi(tlsoff_entry), gr8 2049 setlo lo(tlsoff_entry), gr8 */ 2050 bfd_put_32 (output_bfd, 2051 0x10f80000 2052 | ((entry->tlsoff_entry >> 16) 2053 & (((bfd_vma)1 << 16) - 1)), 2054 plt_code); 2055 plt_code += 4; 2056 bfd_put_32 (output_bfd, 2057 0x90f40000 2058 | (entry->tlsoff_entry 2059 & (((bfd_vma)1 << 16) - 1)), 2060 plt_code); 2061 plt_code += 4; 2062 } 2063 /* ld @(gr15,gr8),gr9 */ 2064 bfd_put_32 (output_bfd, 0x9008f108, plt_code); 2065 plt_code += 4; 2066 } 2067 /* ret */ 2068 bfd_put_32 (output_bfd, 0xc03a4000, plt_code); 2069 } 2070 else 2071 { 2072 BFD_ASSERT (entry->tlsdesc_entry); 2073 2074 /* Figure out what kind of PLT entry we need, depending on the 2075 location of the TLS descriptor within the GOT. */ 2076 if (entry->tlsdesc_entry >= -(1 << (12 - 1)) 2077 && entry->tlsdesc_entry < (1 << (12 - 1))) 2078 { 2079 /* lddi @(gr15, tlsdesc_entry), gr8 */ 2080 bfd_put_32 (output_bfd, 2081 0x90ccf000 | (entry->tlsdesc_entry 2082 & ((1 << 12) - 1)), 2083 plt_code); 2084 plt_code += 4; 2085 } 2086 else 2087 { 2088 if (entry->tlsdesc_entry >= -(1 << (16 - 1)) 2089 && entry->tlsdesc_entry < (1 << (16 - 1))) 2090 { 2091 /* setlos lo(tlsdesc_entry), gr8 */ 2092 bfd_put_32 (output_bfd, 2093 0x90fc0000 2094 | (entry->tlsdesc_entry 2095 & (((bfd_vma)1 << 16) - 1)), 2096 plt_code); 2097 plt_code += 4; 2098 } 2099 else 2100 { 2101 /* sethi.p hi(tlsdesc_entry), gr8 2102 setlo lo(tlsdesc_entry), gr8 */ 2103 bfd_put_32 (output_bfd, 2104 0x10f80000 2105 | ((entry->tlsdesc_entry >> 16) 2106 & (((bfd_vma)1 << 16) - 1)), 2107 plt_code); 2108 plt_code += 4; 2109 bfd_put_32 (output_bfd, 2110 0x90f40000 2111 | (entry->tlsdesc_entry 2112 & (((bfd_vma)1 << 16) - 1)), 2113 plt_code); 2114 plt_code += 4; 2115 } 2116 /* ldd @(gr15,gr8),gr8 */ 2117 bfd_put_32 (output_bfd, 0x9008f148, plt_code); 2118 plt_code += 4; 2119 } 2120 /* jmpl @(gr8,gr0) */ 2121 bfd_put_32 (output_bfd, 0x80308000, plt_code); 2122 } 2123 } 2124 2125 return TRUE; 2126 } 2127 2128 /* Handle an FRV small data reloc. */ 2129 2130 static bfd_reloc_status_type 2131 elf32_frv_relocate_gprel12 (struct bfd_link_info *info, 2132 bfd *input_bfd, 2133 asection *input_section, 2134 Elf_Internal_Rela *relocation, 2135 bfd_byte *contents, 2136 bfd_vma value) 2137 { 2138 bfd_vma insn; 2139 bfd_vma gp; 2140 struct bfd_link_hash_entry *h; 2141 2142 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 2143 2144 gp = (h->u.def.value 2145 + h->u.def.section->output_section->vma 2146 + h->u.def.section->output_offset); 2147 2148 value -= input_section->output_section->vma; 2149 value -= (gp - input_section->output_section->vma); 2150 2151 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 2152 2153 value += relocation->r_addend; 2154 2155 if ((long) value > 0x7ff || (long) value < -0x800) 2156 return bfd_reloc_overflow; 2157 2158 bfd_put_32 (input_bfd, 2159 (insn & 0xfffff000) | (value & 0xfff), 2160 contents + relocation->r_offset); 2161 2162 return bfd_reloc_ok; 2163 } 2164 2165 /* Handle an FRV small data reloc. for the u12 field. */ 2166 2167 static bfd_reloc_status_type 2168 elf32_frv_relocate_gprelu12 (struct bfd_link_info *info, 2169 bfd *input_bfd, 2170 asection *input_section, 2171 Elf_Internal_Rela *relocation, 2172 bfd_byte *contents, 2173 bfd_vma value) 2174 { 2175 bfd_vma insn; 2176 bfd_vma gp; 2177 struct bfd_link_hash_entry *h; 2178 bfd_vma mask; 2179 2180 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 2181 2182 gp = (h->u.def.value 2183 + h->u.def.section->output_section->vma 2184 + h->u.def.section->output_offset); 2185 2186 value -= input_section->output_section->vma; 2187 value -= (gp - input_section->output_section->vma); 2188 2189 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 2190 2191 value += relocation->r_addend; 2192 2193 if ((long) value > 0x7ff || (long) value < -0x800) 2194 return bfd_reloc_overflow; 2195 2196 /* The high 6 bits go into bits 17-12. The low 6 bits go into bits 5-0. */ 2197 mask = 0x3f03f; 2198 insn = (insn & ~mask) | ((value & 0xfc0) << 12) | (value & 0x3f); 2199 2200 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); 2201 2202 return bfd_reloc_ok; 2203 } 2204 2205 /* Handle an FRV ELF HI16 reloc. */ 2206 2207 static bfd_reloc_status_type 2208 elf32_frv_relocate_hi16 (bfd *input_bfd, 2209 Elf_Internal_Rela *relhi, 2210 bfd_byte *contents, 2211 bfd_vma value) 2212 { 2213 bfd_vma insn; 2214 2215 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); 2216 2217 value += relhi->r_addend; 2218 value = ((value >> 16) & 0xffff); 2219 2220 insn = (insn & 0xffff0000) | value; 2221 2222 if ((long) value > 0xffff || (long) value < -0x10000) 2223 return bfd_reloc_overflow; 2224 2225 bfd_put_32 (input_bfd, insn, contents + relhi->r_offset); 2226 return bfd_reloc_ok; 2227 2228 } 2229 static bfd_reloc_status_type 2230 elf32_frv_relocate_lo16 (bfd *input_bfd, 2231 Elf_Internal_Rela *rello, 2232 bfd_byte *contents, 2233 bfd_vma value) 2234 { 2235 bfd_vma insn; 2236 2237 insn = bfd_get_32 (input_bfd, contents + rello->r_offset); 2238 2239 value += rello->r_addend; 2240 value = value & 0xffff; 2241 2242 insn = (insn & 0xffff0000) | value; 2243 2244 if ((long) value > 0xffff || (long) value < -0x10000) 2245 return bfd_reloc_overflow; 2246 2247 bfd_put_32 (input_bfd, insn, contents + rello->r_offset); 2248 return bfd_reloc_ok; 2249 } 2250 2251 /* Perform the relocation for the CALL label24 instruction. */ 2252 2253 static bfd_reloc_status_type 2254 elf32_frv_relocate_label24 (bfd *input_bfd, 2255 asection *input_section, 2256 Elf_Internal_Rela *rello, 2257 bfd_byte *contents, 2258 bfd_vma value) 2259 { 2260 bfd_vma insn; 2261 bfd_vma label6; 2262 bfd_vma label18; 2263 2264 /* The format for the call instruction is: 2265 2266 0 000000 0001111 000000000000000000 2267 label6 opcode label18 2268 2269 The branch calculation is: pc + (4*label24) 2270 where label24 is the concatenation of label6 and label18. */ 2271 2272 /* Grab the instruction. */ 2273 insn = bfd_get_32 (input_bfd, contents + rello->r_offset); 2274 2275 value -= input_section->output_section->vma + input_section->output_offset; 2276 value -= rello->r_offset; 2277 value += rello->r_addend; 2278 2279 value = value >> 2; 2280 2281 label6 = value & 0xfc0000; 2282 label6 = label6 << 7; 2283 2284 label18 = value & 0x3ffff; 2285 2286 insn = insn & 0x803c0000; 2287 insn = insn | label6; 2288 insn = insn | label18; 2289 2290 bfd_put_32 (input_bfd, insn, contents + rello->r_offset); 2291 2292 return bfd_reloc_ok; 2293 } 2294 2295 static bfd_reloc_status_type 2296 elf32_frv_relocate_gprelhi (struct bfd_link_info *info, 2297 bfd *input_bfd, 2298 asection *input_section, 2299 Elf_Internal_Rela *relocation, 2300 bfd_byte *contents, 2301 bfd_vma value) 2302 { 2303 bfd_vma insn; 2304 bfd_vma gp; 2305 struct bfd_link_hash_entry *h; 2306 2307 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 2308 2309 gp = (h->u.def.value 2310 + h->u.def.section->output_section->vma 2311 + h->u.def.section->output_offset); 2312 2313 value -= input_section->output_section->vma; 2314 value -= (gp - input_section->output_section->vma); 2315 value += relocation->r_addend; 2316 value = ((value >> 16) & 0xffff); 2317 2318 if ((long) value > 0xffff || (long) value < -0x10000) 2319 return bfd_reloc_overflow; 2320 2321 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 2322 insn = (insn & 0xffff0000) | value; 2323 2324 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); 2325 return bfd_reloc_ok; 2326 } 2327 2328 static bfd_reloc_status_type 2329 elf32_frv_relocate_gprello (struct bfd_link_info *info, 2330 bfd *input_bfd, 2331 asection *input_section, 2332 Elf_Internal_Rela *relocation, 2333 bfd_byte *contents, 2334 bfd_vma value) 2335 { 2336 bfd_vma insn; 2337 bfd_vma gp; 2338 struct bfd_link_hash_entry *h; 2339 2340 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 2341 2342 gp = (h->u.def.value 2343 + h->u.def.section->output_section->vma 2344 + h->u.def.section->output_offset); 2345 2346 value -= input_section->output_section->vma; 2347 value -= (gp - input_section->output_section->vma); 2348 value += relocation->r_addend; 2349 value = value & 0xffff; 2350 2351 if ((long) value > 0xffff || (long) value < -0x10000) 2352 return bfd_reloc_overflow; 2353 2354 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 2355 insn = (insn & 0xffff0000) | value; 2356 2357 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); 2358 2359 return bfd_reloc_ok; 2360 } 2361 2362 static reloc_howto_type * 2363 frv_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, 2364 bfd_reloc_code_real_type code) 2365 { 2366 switch (code) 2367 { 2368 default: 2369 break; 2370 2371 case BFD_RELOC_NONE: 2372 return &elf32_frv_howto_table[ (int) R_FRV_NONE]; 2373 2374 case BFD_RELOC_32: 2375 if (elf_elfheader (abfd)->e_type == ET_EXEC 2376 || elf_elfheader (abfd)->e_type == ET_DYN) 2377 return &elf32_frv_rel_32_howto; 2378 /* Fall through. */ 2379 case BFD_RELOC_CTOR: 2380 return &elf32_frv_howto_table[ (int) R_FRV_32]; 2381 2382 case BFD_RELOC_FRV_LABEL16: 2383 return &elf32_frv_howto_table[ (int) R_FRV_LABEL16]; 2384 2385 case BFD_RELOC_FRV_LABEL24: 2386 return &elf32_frv_howto_table[ (int) R_FRV_LABEL24]; 2387 2388 case BFD_RELOC_FRV_LO16: 2389 return &elf32_frv_howto_table[ (int) R_FRV_LO16]; 2390 2391 case BFD_RELOC_FRV_HI16: 2392 return &elf32_frv_howto_table[ (int) R_FRV_HI16]; 2393 2394 case BFD_RELOC_FRV_GPREL12: 2395 return &elf32_frv_howto_table[ (int) R_FRV_GPREL12]; 2396 2397 case BFD_RELOC_FRV_GPRELU12: 2398 return &elf32_frv_howto_table[ (int) R_FRV_GPRELU12]; 2399 2400 case BFD_RELOC_FRV_GPREL32: 2401 return &elf32_frv_howto_table[ (int) R_FRV_GPREL32]; 2402 2403 case BFD_RELOC_FRV_GPRELHI: 2404 return &elf32_frv_howto_table[ (int) R_FRV_GPRELHI]; 2405 2406 case BFD_RELOC_FRV_GPRELLO: 2407 return &elf32_frv_howto_table[ (int) R_FRV_GPRELLO]; 2408 2409 case BFD_RELOC_FRV_GOT12: 2410 return &elf32_frv_howto_table[ (int) R_FRV_GOT12]; 2411 2412 case BFD_RELOC_FRV_GOTHI: 2413 return &elf32_frv_howto_table[ (int) R_FRV_GOTHI]; 2414 2415 case BFD_RELOC_FRV_GOTLO: 2416 return &elf32_frv_howto_table[ (int) R_FRV_GOTLO]; 2417 2418 case BFD_RELOC_FRV_FUNCDESC: 2419 if (elf_elfheader (abfd)->e_type == ET_EXEC 2420 || elf_elfheader (abfd)->e_type == ET_DYN) 2421 return &elf32_frv_rel_funcdesc_howto; 2422 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC]; 2423 2424 case BFD_RELOC_FRV_FUNCDESC_GOT12: 2425 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOT12]; 2426 2427 case BFD_RELOC_FRV_FUNCDESC_GOTHI: 2428 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTHI]; 2429 2430 case BFD_RELOC_FRV_FUNCDESC_GOTLO: 2431 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTLO]; 2432 2433 case BFD_RELOC_FRV_FUNCDESC_VALUE: 2434 if (elf_elfheader (abfd)->e_type == ET_EXEC 2435 || elf_elfheader (abfd)->e_type == ET_DYN) 2436 return &elf32_frv_rel_funcdesc_value_howto; 2437 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_VALUE]; 2438 2439 case BFD_RELOC_FRV_FUNCDESC_GOTOFF12: 2440 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFF12]; 2441 2442 case BFD_RELOC_FRV_FUNCDESC_GOTOFFHI: 2443 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFHI]; 2444 2445 case BFD_RELOC_FRV_FUNCDESC_GOTOFFLO: 2446 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFLO]; 2447 2448 case BFD_RELOC_FRV_GOTOFF12: 2449 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFF12]; 2450 2451 case BFD_RELOC_FRV_GOTOFFHI: 2452 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFHI]; 2453 2454 case BFD_RELOC_FRV_GOTOFFLO: 2455 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFLO]; 2456 2457 case BFD_RELOC_FRV_GETTLSOFF: 2458 return &elf32_frv_howto_table[ (int) R_FRV_GETTLSOFF]; 2459 2460 case BFD_RELOC_FRV_TLSDESC_VALUE: 2461 if (elf_elfheader (abfd)->e_type == ET_EXEC 2462 || elf_elfheader (abfd)->e_type == ET_DYN) 2463 return &elf32_frv_rel_tlsdesc_value_howto; 2464 return &elf32_frv_howto_table[ (int) R_FRV_TLSDESC_VALUE]; 2465 2466 case BFD_RELOC_FRV_GOTTLSDESC12: 2467 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESC12]; 2468 2469 case BFD_RELOC_FRV_GOTTLSDESCHI: 2470 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESCHI]; 2471 2472 case BFD_RELOC_FRV_GOTTLSDESCLO: 2473 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESCLO]; 2474 2475 case BFD_RELOC_FRV_TLSMOFF12: 2476 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFF12]; 2477 2478 case BFD_RELOC_FRV_TLSMOFFHI: 2479 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFFHI]; 2480 2481 case BFD_RELOC_FRV_TLSMOFFLO: 2482 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFFLO]; 2483 2484 case BFD_RELOC_FRV_GOTTLSOFF12: 2485 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFF12]; 2486 2487 case BFD_RELOC_FRV_GOTTLSOFFHI: 2488 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFFHI]; 2489 2490 case BFD_RELOC_FRV_GOTTLSOFFLO: 2491 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFFLO]; 2492 2493 case BFD_RELOC_FRV_TLSOFF: 2494 if (elf_elfheader (abfd)->e_type == ET_EXEC 2495 || elf_elfheader (abfd)->e_type == ET_DYN) 2496 return &elf32_frv_rel_tlsoff_howto; 2497 return &elf32_frv_howto_table[ (int) R_FRV_TLSOFF]; 2498 2499 case BFD_RELOC_FRV_TLSDESC_RELAX: 2500 return &elf32_frv_howto_table[ (int) R_FRV_TLSDESC_RELAX]; 2501 2502 case BFD_RELOC_FRV_GETTLSOFF_RELAX: 2503 return &elf32_frv_howto_table[ (int) R_FRV_GETTLSOFF_RELAX]; 2504 2505 case BFD_RELOC_FRV_TLSOFF_RELAX: 2506 return &elf32_frv_howto_table[ (int) R_FRV_TLSOFF_RELAX]; 2507 2508 case BFD_RELOC_FRV_TLSMOFF: 2509 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFF]; 2510 2511 case BFD_RELOC_VTABLE_INHERIT: 2512 return &elf32_frv_vtinherit_howto; 2513 2514 case BFD_RELOC_VTABLE_ENTRY: 2515 return &elf32_frv_vtentry_howto; 2516 } 2517 2518 return NULL; 2519 } 2520 2521 static reloc_howto_type * 2522 frv_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) 2523 { 2524 unsigned int i; 2525 2526 for (i = 0; 2527 i < sizeof (elf32_frv_howto_table) / sizeof (elf32_frv_howto_table[0]); 2528 i++) 2529 if (elf32_frv_howto_table[i].name != NULL 2530 && strcasecmp (elf32_frv_howto_table[i].name, r_name) == 0) 2531 return &elf32_frv_howto_table[i]; 2532 2533 if (strcasecmp (elf32_frv_vtinherit_howto.name, r_name) == 0) 2534 return &elf32_frv_vtinherit_howto; 2535 if (strcasecmp (elf32_frv_vtentry_howto.name, r_name) == 0) 2536 return &elf32_frv_vtentry_howto; 2537 2538 return NULL; 2539 } 2540 2541 /* Set the howto pointer for an FRV ELF reloc. */ 2542 2543 static void 2544 frv_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, 2545 arelent *cache_ptr, 2546 Elf_Internal_Rela *dst) 2547 { 2548 unsigned int r_type; 2549 2550 r_type = ELF32_R_TYPE (dst->r_info); 2551 switch (r_type) 2552 { 2553 case R_FRV_GNU_VTINHERIT: 2554 cache_ptr->howto = &elf32_frv_vtinherit_howto; 2555 break; 2556 2557 case R_FRV_GNU_VTENTRY: 2558 cache_ptr->howto = &elf32_frv_vtentry_howto; 2559 break; 2560 2561 default: 2562 if (r_type >= (unsigned int) R_FRV_max) 2563 { 2564 _bfd_error_handler (_("%B: invalid FRV reloc number: %d"), abfd, r_type); 2565 r_type = 0; 2566 } 2567 cache_ptr->howto = & elf32_frv_howto_table [r_type]; 2568 break; 2569 } 2570 } 2571 2572 /* Set the howto pointer for an FRV ELF REL reloc. */ 2573 static void 2574 frvfdpic_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, 2575 arelent *cache_ptr, Elf_Internal_Rela *dst) 2576 { 2577 unsigned int r_type; 2578 2579 r_type = ELF32_R_TYPE (dst->r_info); 2580 switch (r_type) 2581 { 2582 case R_FRV_32: 2583 cache_ptr->howto = &elf32_frv_rel_32_howto; 2584 break; 2585 2586 case R_FRV_FUNCDESC: 2587 cache_ptr->howto = &elf32_frv_rel_funcdesc_howto; 2588 break; 2589 2590 case R_FRV_FUNCDESC_VALUE: 2591 cache_ptr->howto = &elf32_frv_rel_funcdesc_value_howto; 2592 break; 2593 2594 case R_FRV_TLSDESC_VALUE: 2595 cache_ptr->howto = &elf32_frv_rel_tlsdesc_value_howto; 2596 break; 2597 2598 case R_FRV_TLSOFF: 2599 cache_ptr->howto = &elf32_frv_rel_tlsoff_howto; 2600 break; 2601 2602 default: 2603 cache_ptr->howto = NULL; 2604 break; 2605 } 2606 } 2607 2608 /* Perform a single relocation. By default we use the standard BFD 2609 routines, but a few relocs, we have to do them ourselves. */ 2610 2611 static bfd_reloc_status_type 2612 frv_final_link_relocate (reloc_howto_type *howto, 2613 bfd *input_bfd, 2614 asection *input_section, 2615 bfd_byte *contents, 2616 Elf_Internal_Rela *rel, 2617 bfd_vma relocation) 2618 { 2619 return _bfd_final_link_relocate (howto, input_bfd, input_section, 2620 contents, rel->r_offset, relocation, 2621 rel->r_addend); 2622 } 2623 2624 2625 /* Relocate an FRV ELF section. 2626 2627 The RELOCATE_SECTION function is called by the new ELF backend linker 2628 to handle the relocations for a section. 2629 2630 The relocs are always passed as Rela structures; if the section 2631 actually uses Rel structures, the r_addend field will always be 2632 zero. 2633 2634 This function is responsible for adjusting the section contents as 2635 necessary, and (if using Rela relocs and generating a relocatable 2636 output file) adjusting the reloc addend as necessary. 2637 2638 This function does not have to worry about setting the reloc 2639 address or the reloc symbol index. 2640 2641 LOCAL_SYMS is a pointer to the swapped in local symbols. 2642 2643 LOCAL_SECTIONS is an array giving the section in the input file 2644 corresponding to the st_shndx field of each local symbol. 2645 2646 The global hash table entry for the global symbols can be found 2647 via elf_sym_hashes (input_bfd). 2648 2649 When generating relocatable output, this function must handle 2650 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 2651 going to be the section symbol corresponding to the output 2652 section, which means that the addend must be adjusted 2653 accordingly. */ 2654 2655 static bfd_boolean 2656 elf32_frv_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, 2657 struct bfd_link_info *info, 2658 bfd *input_bfd, 2659 asection *input_section, 2660 bfd_byte *contents, 2661 Elf_Internal_Rela *relocs, 2662 Elf_Internal_Sym *local_syms, 2663 asection **local_sections) 2664 { 2665 Elf_Internal_Shdr *symtab_hdr; 2666 struct elf_link_hash_entry **sym_hashes; 2667 Elf_Internal_Rela *rel; 2668 Elf_Internal_Rela *relend; 2669 unsigned isec_segment, got_segment, plt_segment, gprel_segment, tls_segment, 2670 check_segment[2]; 2671 int silence_segment_error = !bfd_link_pic (info); 2672 unsigned long insn; 2673 2674 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; 2675 sym_hashes = elf_sym_hashes (input_bfd); 2676 relend = relocs + input_section->reloc_count; 2677 2678 isec_segment = _frvfdpic_osec_to_segment (output_bfd, 2679 input_section->output_section); 2680 if (IS_FDPIC (output_bfd) && frvfdpic_got_section (info)) 2681 got_segment = _frvfdpic_osec_to_segment (output_bfd, 2682 frvfdpic_got_section (info) 2683 ->output_section); 2684 else 2685 got_segment = -1; 2686 if (IS_FDPIC (output_bfd) && frvfdpic_gotfixup_section (info)) 2687 gprel_segment = _frvfdpic_osec_to_segment (output_bfd, 2688 frvfdpic_gotfixup_section (info) 2689 ->output_section); 2690 else 2691 gprel_segment = -1; 2692 if (IS_FDPIC (output_bfd) && frvfdpic_plt_section (info)) 2693 plt_segment = _frvfdpic_osec_to_segment (output_bfd, 2694 frvfdpic_plt_section (info) 2695 ->output_section); 2696 else 2697 plt_segment = -1; 2698 if (elf_hash_table (info)->tls_sec) 2699 tls_segment = _frvfdpic_osec_to_segment (output_bfd, 2700 elf_hash_table (info)->tls_sec); 2701 else 2702 tls_segment = -1; 2703 2704 for (rel = relocs; rel < relend; rel ++) 2705 { 2706 reloc_howto_type *howto; 2707 unsigned long r_symndx; 2708 Elf_Internal_Sym *sym; 2709 asection *sec; 2710 struct elf_link_hash_entry *h; 2711 bfd_vma relocation; 2712 bfd_reloc_status_type r; 2713 const char *name; 2714 int r_type; 2715 asection *osec; 2716 struct frvfdpic_relocs_info *picrel; 2717 bfd_vma orig_addend = rel->r_addend; 2718 2719 r_type = ELF32_R_TYPE (rel->r_info); 2720 2721 if ( r_type == R_FRV_GNU_VTINHERIT 2722 || r_type == R_FRV_GNU_VTENTRY) 2723 continue; 2724 2725 r_symndx = ELF32_R_SYM (rel->r_info); 2726 howto = elf32_frv_howto_table + ELF32_R_TYPE (rel->r_info); 2727 h = NULL; 2728 sym = NULL; 2729 sec = NULL; 2730 2731 if (r_symndx < symtab_hdr->sh_info) 2732 { 2733 sym = local_syms + r_symndx; 2734 osec = sec = local_sections [r_symndx]; 2735 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2736 2737 name = bfd_elf_string_from_elf_section 2738 (input_bfd, symtab_hdr->sh_link, sym->st_name); 2739 if (name == NULL || name[0] == 0) 2740 name = bfd_section_name (input_bfd, sec); 2741 } 2742 else 2743 { 2744 bfd_boolean warned, ignored; 2745 bfd_boolean unresolved_reloc; 2746 2747 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 2748 r_symndx, symtab_hdr, sym_hashes, 2749 h, sec, relocation, 2750 unresolved_reloc, warned, ignored); 2751 osec = sec; 2752 name = h->root.root.string; 2753 } 2754 2755 if (sec != NULL && discarded_section (sec)) 2756 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 2757 rel, 1, relend, howto, 0, contents); 2758 2759 if (bfd_link_relocatable (info)) 2760 continue; 2761 2762 if (r_type != R_FRV_TLSMOFF 2763 && h != NULL 2764 && (h->root.type == bfd_link_hash_defined 2765 || h->root.type == bfd_link_hash_defweak) 2766 && !FRVFDPIC_SYM_LOCAL (info, h)) 2767 { 2768 osec = sec = NULL; 2769 relocation = 0; 2770 } 2771 2772 switch (r_type) 2773 { 2774 case R_FRV_LABEL24: 2775 case R_FRV_32: 2776 if (! IS_FDPIC (output_bfd)) 2777 goto non_fdpic; 2778 2779 case R_FRV_GOT12: 2780 case R_FRV_GOTHI: 2781 case R_FRV_GOTLO: 2782 case R_FRV_FUNCDESC_GOT12: 2783 case R_FRV_FUNCDESC_GOTHI: 2784 case R_FRV_FUNCDESC_GOTLO: 2785 case R_FRV_GOTOFF12: 2786 case R_FRV_GOTOFFHI: 2787 case R_FRV_GOTOFFLO: 2788 case R_FRV_FUNCDESC_GOTOFF12: 2789 case R_FRV_FUNCDESC_GOTOFFHI: 2790 case R_FRV_FUNCDESC_GOTOFFLO: 2791 case R_FRV_FUNCDESC: 2792 case R_FRV_FUNCDESC_VALUE: 2793 case R_FRV_GETTLSOFF: 2794 case R_FRV_TLSDESC_VALUE: 2795 case R_FRV_GOTTLSDESC12: 2796 case R_FRV_GOTTLSDESCHI: 2797 case R_FRV_GOTTLSDESCLO: 2798 case R_FRV_TLSMOFF12: 2799 case R_FRV_TLSMOFFHI: 2800 case R_FRV_TLSMOFFLO: 2801 case R_FRV_GOTTLSOFF12: 2802 case R_FRV_GOTTLSOFFHI: 2803 case R_FRV_GOTTLSOFFLO: 2804 case R_FRV_TLSOFF: 2805 case R_FRV_TLSDESC_RELAX: 2806 case R_FRV_GETTLSOFF_RELAX: 2807 case R_FRV_TLSOFF_RELAX: 2808 case R_FRV_TLSMOFF: 2809 if (h != NULL) 2810 picrel = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info 2811 (info), input_bfd, h, 2812 orig_addend, INSERT); 2813 else 2814 /* In order to find the entry we created before, we must 2815 use the original addend, not the one that may have been 2816 modified by _bfd_elf_rela_local_sym(). */ 2817 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info 2818 (info), input_bfd, r_symndx, 2819 orig_addend, INSERT); 2820 if (! picrel) 2821 return FALSE; 2822 2823 if (!_frvfdpic_emit_got_relocs_plt_entries (picrel, output_bfd, info, 2824 osec, sym, 2825 rel->r_addend)) 2826 { 2827 info->callbacks->einfo 2828 (_("%H: relocation to `%s+%v'" 2829 " may have caused the error above\n"), 2830 input_bfd, input_section, rel->r_offset, name, rel->r_addend); 2831 return FALSE; 2832 } 2833 2834 break; 2835 2836 default: 2837 non_fdpic: 2838 picrel = NULL; 2839 if (h 2840 && ! FRVFDPIC_SYM_LOCAL (info, h) 2841 && _bfd_elf_section_offset (output_bfd, info, input_section, 2842 rel->r_offset) != (bfd_vma) -1) 2843 { 2844 info->callbacks->einfo 2845 (_("%H: relocation references symbol" 2846 " not defined in the module\n"), 2847 input_bfd, input_section, rel->r_offset); 2848 return FALSE; 2849 } 2850 break; 2851 } 2852 2853 switch (r_type) 2854 { 2855 case R_FRV_GETTLSOFF: 2856 case R_FRV_TLSDESC_VALUE: 2857 case R_FRV_GOTTLSDESC12: 2858 case R_FRV_GOTTLSDESCHI: 2859 case R_FRV_GOTTLSDESCLO: 2860 case R_FRV_TLSMOFF12: 2861 case R_FRV_TLSMOFFHI: 2862 case R_FRV_TLSMOFFLO: 2863 case R_FRV_GOTTLSOFF12: 2864 case R_FRV_GOTTLSOFFHI: 2865 case R_FRV_GOTTLSOFFLO: 2866 case R_FRV_TLSOFF: 2867 case R_FRV_TLSDESC_RELAX: 2868 case R_FRV_GETTLSOFF_RELAX: 2869 case R_FRV_TLSOFF_RELAX: 2870 case R_FRV_TLSMOFF: 2871 if (sec && (bfd_is_abs_section (sec) || bfd_is_und_section (sec))) 2872 relocation += tls_biased_base (info); 2873 break; 2874 2875 default: 2876 break; 2877 } 2878 2879 /* Try to apply TLS relaxations. */ 2880 if (1) 2881 switch (r_type) 2882 { 2883 2884 #define LOCAL_EXEC_P(info, picrel) \ 2885 (bfd_link_executable (info) \ 2886 && (picrel->symndx != -1 || FRVFDPIC_SYM_LOCAL ((info), (picrel)->d.h))) 2887 #define INITIAL_EXEC_P(info, picrel) \ 2888 ((bfd_link_executable (info)|| (info)->flags & DF_STATIC_TLS) \ 2889 && (picrel)->tlsoff_entry) 2890 2891 #define IN_RANGE_FOR_OFST12_P(value) \ 2892 ((bfd_vma)((value) + 2048) < (bfd_vma)4096) 2893 #define IN_RANGE_FOR_SETLOS_P(value) \ 2894 ((bfd_vma)((value) + 32768) < (bfd_vma)65536) 2895 #define TLSMOFF_IN_RANGE_FOR_SETLOS_P(value, info) \ 2896 (IN_RANGE_FOR_SETLOS_P ((value) - tls_biased_base (info))) 2897 2898 #define RELAX_GETTLSOFF_LOCAL_EXEC_P(info, picrel, value) \ 2899 (LOCAL_EXEC_P ((info), (picrel)) \ 2900 && TLSMOFF_IN_RANGE_FOR_SETLOS_P((value), (info))) 2901 #define RELAX_GETTLSOFF_INITIAL_EXEC_P(info, picrel) \ 2902 (INITIAL_EXEC_P ((info), (picrel)) \ 2903 && IN_RANGE_FOR_OFST12_P ((picrel)->tlsoff_entry)) 2904 2905 #define RELAX_TLSDESC_LOCAL_EXEC_P(info, picrel, value) \ 2906 (LOCAL_EXEC_P ((info), (picrel))) 2907 #define RELAX_TLSDESC_INITIAL_EXEC_P(info, picrel) \ 2908 (INITIAL_EXEC_P ((info), (picrel))) 2909 2910 #define RELAX_GOTTLSOFF_LOCAL_EXEC_P(info, picrel, value) \ 2911 (LOCAL_EXEC_P ((info), (picrel)) \ 2912 && TLSMOFF_IN_RANGE_FOR_SETLOS_P((value), (info))) 2913 2914 case R_FRV_GETTLSOFF: 2915 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 2916 2917 /* Is this a call instruction? */ 2918 if ((insn & (unsigned long)0x01fc0000) != 0x003c0000) 2919 { 2920 info->callbacks->einfo 2921 (_("%H: R_FRV_GETTLSOFF not applied to a call instruction\n"), 2922 input_bfd, input_section, rel->r_offset); 2923 return FALSE; 2924 } 2925 2926 if (RELAX_GETTLSOFF_LOCAL_EXEC_P (info, picrel, 2927 relocation + rel->r_addend)) 2928 { 2929 /* Replace the call instruction (except the packing bit) 2930 with setlos #tlsmofflo(symbol+offset), gr9. */ 2931 insn &= (unsigned long)0x80000000; 2932 insn |= (unsigned long)0x12fc0000; 2933 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 2934 2935 r_type = R_FRV_TLSMOFFLO; 2936 howto = elf32_frv_howto_table + r_type; 2937 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 2938 } 2939 2940 else if (RELAX_GETTLSOFF_INITIAL_EXEC_P (info, picrel)) 2941 { 2942 /* Replace the call instruction (except the packing bit) 2943 with ldi @(gr15, #gottlsoff12(symbol+addend)), gr9. */ 2944 insn &= (unsigned long)0x80000000; 2945 insn |= (unsigned long)0x12c8f000; 2946 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 2947 2948 r_type = R_FRV_GOTTLSOFF12; 2949 howto = elf32_frv_howto_table + r_type; 2950 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 2951 } 2952 2953 break; 2954 2955 case R_FRV_GOTTLSDESC12: 2956 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 2957 2958 /* Is this an lddi instruction? */ 2959 if ((insn & (unsigned long)0x01fc0000) != 0x00cc0000) 2960 { 2961 info->callbacks->einfo 2962 (_("%H: R_FRV_GOTTLSDESC12" 2963 " not applied to an lddi instruction\n"), 2964 input_bfd, input_section, rel->r_offset); 2965 return FALSE; 2966 } 2967 2968 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 2969 relocation + rel->r_addend) 2970 && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 2971 info)) 2972 { 2973 /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC 2974 with setlos #tlsmofflo(symbol+offset), gr<C+1>. 2975 Preserve the packing bit. */ 2976 insn = (insn & (unsigned long)0x80000000) 2977 | ((insn + (unsigned long)0x02000000) 2978 & (unsigned long)0x7e000000); 2979 insn |= (unsigned long)0x00fc0000; 2980 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 2981 2982 r_type = R_FRV_TLSMOFFLO; 2983 howto = elf32_frv_howto_table + r_type; 2984 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 2985 } 2986 2987 else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 2988 relocation + rel->r_addend)) 2989 { 2990 /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC 2991 with sethi #tlsmoffhi(symbol+offset), gr<C+1>. 2992 Preserve the packing bit. */ 2993 insn = (insn & (unsigned long)0x80000000) 2994 | ((insn + (unsigned long)0x02000000) 2995 & (unsigned long)0x7e000000); 2996 insn |= (unsigned long)0x00f80000; 2997 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 2998 2999 r_type = R_FRV_TLSMOFFHI; 3000 howto = elf32_frv_howto_table + r_type; 3001 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3002 } 3003 3004 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3005 { 3006 /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC 3007 with ldi @(grB, #gottlsoff12(symbol+offset), 3008 gr<C+1>. Preserve the packing bit. If gottlsoff12 3009 overflows, we'll error out, but that's sort-of ok, 3010 since we'd started with gottlsdesc12, that's actually 3011 more demanding. Compiling with -fPIE instead of 3012 -fpie would fix it; linking with --relax should fix 3013 it as well. */ 3014 insn = (insn & (unsigned long)0x80cbf000) 3015 | ((insn + (unsigned long)0x02000000) 3016 & (unsigned long)0x7e000000); 3017 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3018 3019 r_type = R_FRV_GOTTLSOFF12; 3020 howto = elf32_frv_howto_table + r_type; 3021 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3022 } 3023 3024 break; 3025 3026 case R_FRV_GOTTLSDESCHI: 3027 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3028 3029 /* Is this a sethi instruction? */ 3030 if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) 3031 { 3032 info->callbacks->einfo 3033 (_("%H: R_FRV_GOTTLSDESCHI" 3034 " not applied to a sethi instruction\n"), 3035 input_bfd, input_section, rel->r_offset); 3036 return FALSE; 3037 } 3038 3039 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3040 relocation + rel->r_addend) 3041 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3042 && IN_RANGE_FOR_SETLOS_P (picrel->tlsoff_entry))) 3043 { 3044 /* Replace sethi with a nop. Preserve the packing bit. */ 3045 insn &= (unsigned long)0x80000000; 3046 insn |= (unsigned long)0x00880000; 3047 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3048 3049 /* Nothing to relocate. */ 3050 continue; 3051 } 3052 3053 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3054 { 3055 /* Simply decay GOTTLSDESC to GOTTLSOFF. */ 3056 r_type = R_FRV_GOTTLSOFFHI; 3057 howto = elf32_frv_howto_table + r_type; 3058 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3059 } 3060 3061 break; 3062 3063 case R_FRV_GOTTLSDESCLO: 3064 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3065 3066 /* Is this a setlo or setlos instruction? */ 3067 if ((insn & (unsigned long)0x01f70000) != 0x00f40000) 3068 { 3069 info->callbacks->einfo 3070 (_("%H: R_FRV_GOTTLSDESCLO" 3071 " not applied to a setlo or setlos instruction\n"), 3072 input_bfd, input_section, rel->r_offset); 3073 return FALSE; 3074 } 3075 3076 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3077 relocation + rel->r_addend) 3078 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3079 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) 3080 { 3081 /* Replace setlo/setlos with a nop. Preserve the 3082 packing bit. */ 3083 insn &= (unsigned long)0x80000000; 3084 insn |= (unsigned long)0x00880000; 3085 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3086 3087 /* Nothing to relocate. */ 3088 continue; 3089 } 3090 3091 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3092 { 3093 /* If the corresponding sethi (if it exists) decayed 3094 to a nop, make sure this becomes (or already is) a 3095 setlos, not setlo. */ 3096 if (IN_RANGE_FOR_SETLOS_P (picrel->tlsoff_entry)) 3097 { 3098 insn |= (unsigned long)0x00080000; 3099 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3100 } 3101 3102 /* Simply decay GOTTLSDESC to GOTTLSOFF. */ 3103 r_type = R_FRV_GOTTLSOFFLO; 3104 howto = elf32_frv_howto_table + r_type; 3105 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3106 } 3107 3108 break; 3109 3110 case R_FRV_TLSDESC_RELAX: 3111 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3112 3113 /* Is this an ldd instruction? */ 3114 if ((insn & (unsigned long)0x01fc0fc0) != 0x00080140) 3115 { 3116 info->callbacks->einfo 3117 (_("%H: R_FRV_TLSDESC_RELAX" 3118 " not applied to an ldd instruction\n"), 3119 input_bfd, input_section, rel->r_offset); 3120 return FALSE; 3121 } 3122 3123 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3124 relocation + rel->r_addend) 3125 && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 3126 info)) 3127 { 3128 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC 3129 with setlos #tlsmofflo(symbol+offset), gr<C+1>. 3130 Preserve the packing bit. */ 3131 insn = (insn & (unsigned long)0x80000000) 3132 | ((insn + (unsigned long)0x02000000) 3133 & (unsigned long)0x7e000000); 3134 insn |= (unsigned long)0x00fc0000; 3135 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3136 3137 r_type = R_FRV_TLSMOFFLO; 3138 howto = elf32_frv_howto_table + r_type; 3139 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3140 } 3141 3142 else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3143 relocation + rel->r_addend)) 3144 { 3145 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC 3146 with sethi #tlsmoffhi(symbol+offset), gr<C+1>. 3147 Preserve the packing bit. */ 3148 insn = (insn & (unsigned long)0x80000000) 3149 | ((insn + (unsigned long)0x02000000) 3150 & (unsigned long)0x7e000000); 3151 insn |= (unsigned long)0x00f80000; 3152 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3153 3154 r_type = R_FRV_TLSMOFFHI; 3155 howto = elf32_frv_howto_table + r_type; 3156 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3157 } 3158 3159 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3160 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry)) 3161 { 3162 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC 3163 with ldi @(grB, #gottlsoff12(symbol+offset), gr<C+1>. 3164 Preserve the packing bit. */ 3165 insn = (insn & (unsigned long)0x8003f000) 3166 | (unsigned long)0x00c80000 3167 | ((insn + (unsigned long)0x02000000) 3168 & (unsigned long)0x7e000000); 3169 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3170 3171 r_type = R_FRV_GOTTLSOFF12; 3172 howto = elf32_frv_howto_table + r_type; 3173 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3174 } 3175 3176 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3177 { 3178 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC 3179 with ld #tlsoff(symbol+offset)@(grB, grA), gr<C+1>. 3180 Preserve the packing bit. */ 3181 insn = (insn & (unsigned long)0x81ffffbf) 3182 | ((insn + (unsigned long)0x02000000) 3183 & (unsigned long)0x7e000000); 3184 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3185 3186 /* #tlsoff(symbol+offset) is just a relaxation 3187 annotation, so there's nothing left to 3188 relocate. */ 3189 continue; 3190 } 3191 3192 break; 3193 3194 case R_FRV_GETTLSOFF_RELAX: 3195 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3196 3197 /* Is this a calll or callil instruction? */ 3198 if ((insn & (unsigned long)0x7ff80fc0) != 0x02300000) 3199 { 3200 info->callbacks->einfo 3201 (_("%H: R_FRV_GETTLSOFF_RELAX" 3202 " not applied to a calll instruction\n"), 3203 input_bfd, input_section, rel->r_offset); 3204 return FALSE; 3205 } 3206 3207 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3208 relocation + rel->r_addend) 3209 && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 3210 info)) 3211 { 3212 /* Replace calll with a nop. Preserve the packing bit. */ 3213 insn &= (unsigned long)0x80000000; 3214 insn |= (unsigned long)0x00880000; 3215 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3216 3217 /* Nothing to relocate. */ 3218 continue; 3219 } 3220 3221 else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3222 relocation + rel->r_addend)) 3223 { 3224 /* Replace calll with setlo #tlsmofflo(symbol+offset), gr9. 3225 Preserve the packing bit. */ 3226 insn &= (unsigned long)0x80000000; 3227 insn |= (unsigned long)0x12f40000; 3228 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3229 3230 r_type = R_FRV_TLSMOFFLO; 3231 howto = elf32_frv_howto_table + r_type; 3232 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3233 } 3234 3235 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3236 { 3237 /* Replace calll with a nop. Preserve the packing bit. */ 3238 insn &= (unsigned long)0x80000000; 3239 insn |= (unsigned long)0x00880000; 3240 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3241 3242 /* Nothing to relocate. */ 3243 continue; 3244 } 3245 3246 break; 3247 3248 case R_FRV_GOTTLSOFF12: 3249 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3250 3251 /* Is this an ldi instruction? */ 3252 if ((insn & (unsigned long)0x01fc0000) != 0x00c80000) 3253 { 3254 info->callbacks->einfo 3255 (_("%H: R_FRV_GOTTLSOFF12" 3256 " not applied to an ldi instruction\n"), 3257 input_bfd, input_section, rel->r_offset); 3258 return FALSE; 3259 } 3260 3261 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, 3262 relocation + rel->r_addend)) 3263 { 3264 /* Replace ldi @(grB, #gottlsoff12(symbol+offset), grC 3265 with setlos #tlsmofflo(symbol+offset), grC. 3266 Preserve the packing bit. */ 3267 insn &= (unsigned long)0xfe000000; 3268 insn |= (unsigned long)0x00fc0000; 3269 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3270 3271 r_type = R_FRV_TLSMOFFLO; 3272 howto = elf32_frv_howto_table + r_type; 3273 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3274 } 3275 3276 break; 3277 3278 case R_FRV_GOTTLSOFFHI: 3279 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3280 3281 /* Is this a sethi instruction? */ 3282 if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) 3283 { 3284 info->callbacks->einfo 3285 (_("%H: R_FRV_GOTTLSOFFHI" 3286 " not applied to a sethi instruction\n"), 3287 input_bfd, input_section, rel->r_offset); 3288 return FALSE; 3289 } 3290 3291 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, 3292 relocation + rel->r_addend) 3293 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3294 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) 3295 { 3296 /* Replace sethi with a nop. Preserve the packing bit. */ 3297 insn &= (unsigned long)0x80000000; 3298 insn |= (unsigned long)0x00880000; 3299 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3300 3301 /* Nothing to relocate. */ 3302 continue; 3303 } 3304 3305 break; 3306 3307 case R_FRV_GOTTLSOFFLO: 3308 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3309 3310 /* Is this a setlo or setlos instruction? */ 3311 if ((insn & (unsigned long)0x01f70000) != 0x00f40000) 3312 { 3313 info->callbacks->einfo 3314 (_("%H: R_FRV_GOTTLSOFFLO" 3315 " not applied to a setlo or setlos instruction\n"), 3316 input_bfd, input_section, rel->r_offset); 3317 return FALSE; 3318 } 3319 3320 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, 3321 relocation + rel->r_addend) 3322 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3323 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) 3324 { 3325 /* Replace setlo/setlos with a nop. Preserve the 3326 packing bit. */ 3327 insn &= (unsigned long)0x80000000; 3328 insn |= (unsigned long)0x00880000; 3329 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3330 3331 /* Nothing to relocate. */ 3332 continue; 3333 } 3334 3335 break; 3336 3337 case R_FRV_TLSOFF_RELAX: 3338 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3339 3340 /* Is this an ld instruction? */ 3341 if ((insn & (unsigned long)0x01fc0fc0) != 0x00080100) 3342 { 3343 info->callbacks->einfo 3344 (_("%H: R_FRV_TLSOFF_RELAX" 3345 " not applied to an ld instruction\n"), 3346 input_bfd, input_section, rel->r_offset); 3347 return FALSE; 3348 } 3349 3350 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, 3351 relocation + rel->r_addend)) 3352 { 3353 /* Replace ld #gottlsoff(symbol+offset)@(grB, grA), grC 3354 with setlos #tlsmofflo(symbol+offset), grC. 3355 Preserve the packing bit. */ 3356 insn &= (unsigned long)0xfe000000; 3357 insn |= (unsigned long)0x00fc0000; 3358 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3359 3360 r_type = R_FRV_TLSMOFFLO; 3361 howto = elf32_frv_howto_table + r_type; 3362 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3363 } 3364 3365 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3366 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry)) 3367 { 3368 /* Replace ld #tlsoff(symbol+offset)@(grB, grA), grC 3369 with ldi @(grB, #gottlsoff12(symbol+offset), grC. 3370 Preserve the packing bit. */ 3371 insn = (insn & (unsigned long)0xfe03f000) 3372 | (unsigned long)0x00c80000; 3373 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3374 3375 r_type = R_FRV_GOTTLSOFF12; 3376 howto = elf32_frv_howto_table + r_type; 3377 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3378 } 3379 3380 break; 3381 3382 case R_FRV_TLSMOFFHI: 3383 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3384 3385 /* Is this a sethi instruction? */ 3386 if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) 3387 { 3388 info->callbacks->einfo 3389 (_("%H: R_FRV_TLSMOFFHI" 3390 " not applied to a sethi instruction\n"), 3391 input_bfd, input_section, rel->r_offset); 3392 return FALSE; 3393 } 3394 3395 if (TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 3396 info)) 3397 { 3398 /* Replace sethi with a nop. Preserve the packing bit. */ 3399 insn &= (unsigned long)0x80000000; 3400 insn |= (unsigned long)0x00880000; 3401 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3402 3403 /* Nothing to relocate. */ 3404 continue; 3405 } 3406 3407 break; 3408 3409 case R_FRV_TLSMOFFLO: 3410 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3411 3412 /* Is this a setlo or setlos instruction? */ 3413 if ((insn & (unsigned long)0x01f70000) != 0x00f40000) 3414 { 3415 info->callbacks->einfo 3416 (_("R_FRV_TLSMOFFLO" 3417 " not applied to a setlo or setlos instruction\n"), 3418 input_bfd, input_section, rel->r_offset); 3419 return FALSE; 3420 } 3421 3422 if (TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 3423 info)) 3424 /* If the corresponding sethi (if it exists) decayed 3425 to a nop, make sure this becomes (or already is) a 3426 setlos, not setlo. */ 3427 { 3428 insn |= (unsigned long)0x00080000; 3429 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3430 } 3431 3432 break; 3433 3434 /* 3435 There's nothing to relax in these: 3436 R_FRV_TLSDESC_VALUE 3437 R_FRV_TLSOFF 3438 R_FRV_TLSMOFF12 3439 R_FRV_TLSMOFFHI 3440 R_FRV_TLSMOFFLO 3441 R_FRV_TLSMOFF 3442 */ 3443 3444 default: 3445 break; 3446 } 3447 3448 switch (r_type) 3449 { 3450 case R_FRV_LABEL24: 3451 check_segment[0] = isec_segment; 3452 if (! IS_FDPIC (output_bfd)) 3453 check_segment[1] = isec_segment; 3454 else if (picrel->plt) 3455 { 3456 relocation = frvfdpic_plt_section (info)->output_section->vma 3457 + frvfdpic_plt_section (info)->output_offset 3458 + picrel->plt_entry; 3459 check_segment[1] = plt_segment; 3460 } 3461 /* We don't want to warn on calls to undefined weak symbols, 3462 as calls to them must be protected by non-NULL tests 3463 anyway, and unprotected calls would invoke undefined 3464 behavior. */ 3465 else if (picrel->symndx == -1 3466 && picrel->d.h->root.type == bfd_link_hash_undefweak) 3467 check_segment[1] = check_segment[0]; 3468 else 3469 check_segment[1] = sec 3470 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3471 : (unsigned)-1; 3472 break; 3473 3474 case R_FRV_GOT12: 3475 case R_FRV_GOTHI: 3476 case R_FRV_GOTLO: 3477 relocation = picrel->got_entry; 3478 check_segment[0] = check_segment[1] = got_segment; 3479 break; 3480 3481 case R_FRV_FUNCDESC_GOT12: 3482 case R_FRV_FUNCDESC_GOTHI: 3483 case R_FRV_FUNCDESC_GOTLO: 3484 relocation = picrel->fdgot_entry; 3485 check_segment[0] = check_segment[1] = got_segment; 3486 break; 3487 3488 case R_FRV_GOTOFFHI: 3489 case R_FRV_GOTOFF12: 3490 case R_FRV_GOTOFFLO: 3491 relocation -= frvfdpic_got_section (info)->output_section->vma 3492 + frvfdpic_got_section (info)->output_offset 3493 + frvfdpic_got_initial_offset (info); 3494 check_segment[0] = got_segment; 3495 check_segment[1] = sec 3496 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3497 : (unsigned)-1; 3498 break; 3499 3500 case R_FRV_FUNCDESC_GOTOFF12: 3501 case R_FRV_FUNCDESC_GOTOFFHI: 3502 case R_FRV_FUNCDESC_GOTOFFLO: 3503 relocation = picrel->fd_entry; 3504 check_segment[0] = check_segment[1] = got_segment; 3505 break; 3506 3507 case R_FRV_FUNCDESC: 3508 { 3509 int dynindx; 3510 bfd_vma addend = rel->r_addend; 3511 3512 if (! (h && h->root.type == bfd_link_hash_undefweak 3513 && FRVFDPIC_SYM_LOCAL (info, h))) 3514 { 3515 /* If the symbol is dynamic and there may be dynamic 3516 symbol resolution because we are or are linked with a 3517 shared library, emit a FUNCDESC relocation such that 3518 the dynamic linker will allocate the function 3519 descriptor. If the symbol needs a non-local function 3520 descriptor but binds locally (e.g., its visibility is 3521 protected, emit a dynamic relocation decayed to 3522 section+offset. */ 3523 if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h) 3524 && FRVFDPIC_SYM_LOCAL (info, h) 3525 && !bfd_link_pde (info)) 3526 { 3527 dynindx = elf_section_data (h->root.u.def.section 3528 ->output_section)->dynindx; 3529 addend += h->root.u.def.section->output_offset 3530 + h->root.u.def.value; 3531 } 3532 else if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h)) 3533 { 3534 if (addend) 3535 { 3536 info->callbacks->einfo 3537 (_("%H: R_FRV_FUNCDESC references dynamic symbol" 3538 " with nonzero addend\n"), 3539 input_bfd, input_section, rel->r_offset); 3540 return FALSE; 3541 } 3542 dynindx = h->dynindx; 3543 } 3544 else 3545 { 3546 /* Otherwise, we know we have a private function 3547 descriptor, so reference it directly. */ 3548 BFD_ASSERT (picrel->privfd); 3549 r_type = R_FRV_32; 3550 dynindx = elf_section_data (frvfdpic_got_section (info) 3551 ->output_section)->dynindx; 3552 addend = frvfdpic_got_section (info)->output_offset 3553 + frvfdpic_got_initial_offset (info) 3554 + picrel->fd_entry; 3555 } 3556 3557 /* If there is room for dynamic symbol resolution, emit 3558 the dynamic relocation. However, if we're linking an 3559 executable at a fixed location, we won't have emitted a 3560 dynamic symbol entry for the got section, so idx will 3561 be zero, which means we can and should compute the 3562 address of the private descriptor ourselves. */ 3563 if (bfd_link_pde (info) 3564 && (!h || FRVFDPIC_FUNCDESC_LOCAL (info, h))) 3565 { 3566 addend += frvfdpic_got_section (info)->output_section->vma; 3567 if ((bfd_get_section_flags (output_bfd, 3568 input_section->output_section) 3569 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 3570 { 3571 bfd_vma offset; 3572 3573 if (_frvfdpic_osec_readonly_p (output_bfd, 3574 input_section 3575 ->output_section)) 3576 { 3577 info->callbacks->einfo 3578 (_("%H: cannot emit fixups" 3579 " in read-only section\n"), 3580 input_bfd, input_section, rel->r_offset); 3581 return FALSE; 3582 } 3583 3584 offset = _bfd_elf_section_offset 3585 (output_bfd, info, 3586 input_section, rel->r_offset); 3587 3588 if (offset != (bfd_vma)-1) 3589 _frvfdpic_add_rofixup (output_bfd, 3590 frvfdpic_gotfixup_section 3591 (info), 3592 offset + input_section 3593 ->output_section->vma 3594 + input_section->output_offset, 3595 picrel); 3596 } 3597 } 3598 else if ((bfd_get_section_flags (output_bfd, 3599 input_section->output_section) 3600 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 3601 { 3602 bfd_vma offset; 3603 3604 if (_frvfdpic_osec_readonly_p (output_bfd, 3605 input_section 3606 ->output_section)) 3607 { 3608 info->callbacks->einfo 3609 (_("%H: cannot emit dynamic relocations" 3610 " in read-only section\n"), 3611 input_bfd, input_section, rel->r_offset); 3612 return FALSE; 3613 } 3614 3615 offset = _bfd_elf_section_offset 3616 (output_bfd, info, 3617 input_section, rel->r_offset); 3618 3619 if (offset != (bfd_vma)-1) 3620 _frvfdpic_add_dyn_reloc (output_bfd, 3621 frvfdpic_gotrel_section (info), 3622 offset + input_section 3623 ->output_section->vma 3624 + input_section->output_offset, 3625 r_type, dynindx, addend, picrel); 3626 } 3627 else 3628 addend += frvfdpic_got_section (info)->output_section->vma; 3629 } 3630 3631 /* We want the addend in-place because dynamic 3632 relocations are REL. Setting relocation to it should 3633 arrange for it to be installed. */ 3634 relocation = addend - rel->r_addend; 3635 } 3636 check_segment[0] = check_segment[1] = got_segment; 3637 break; 3638 3639 case R_FRV_32: 3640 if (! IS_FDPIC (output_bfd)) 3641 { 3642 check_segment[0] = check_segment[1] = -1; 3643 break; 3644 } 3645 /* Fall through. */ 3646 case R_FRV_FUNCDESC_VALUE: 3647 { 3648 int dynindx; 3649 bfd_vma addend = rel->r_addend; 3650 3651 /* If the symbol is dynamic but binds locally, use 3652 section+offset. */ 3653 if (h && ! FRVFDPIC_SYM_LOCAL (info, h)) 3654 { 3655 if (addend && r_type == R_FRV_FUNCDESC_VALUE) 3656 { 3657 info->callbacks->einfo 3658 (_("%H: R_FRV_FUNCDESC_VALUE" 3659 " references dynamic symbol with nonzero addend\n"), 3660 input_bfd, input_section, rel->r_offset); 3661 return FALSE; 3662 } 3663 dynindx = h->dynindx; 3664 } 3665 else 3666 { 3667 if (h) 3668 addend += h->root.u.def.value; 3669 else 3670 addend += sym->st_value; 3671 if (osec) 3672 addend += osec->output_offset; 3673 if (osec && osec->output_section 3674 && ! bfd_is_abs_section (osec->output_section) 3675 && ! bfd_is_und_section (osec->output_section)) 3676 dynindx = elf_section_data (osec->output_section)->dynindx; 3677 else 3678 dynindx = 0; 3679 } 3680 3681 /* If we're linking an executable at a fixed address, we 3682 can omit the dynamic relocation as long as the symbol 3683 is defined in the current link unit (which is implied 3684 by its output section not being NULL). */ 3685 if (bfd_link_pde (info) 3686 && (!h || FRVFDPIC_SYM_LOCAL (info, h))) 3687 { 3688 if (osec) 3689 addend += osec->output_section->vma; 3690 if (IS_FDPIC (input_bfd) 3691 && (bfd_get_section_flags (output_bfd, 3692 input_section->output_section) 3693 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 3694 { 3695 if (_frvfdpic_osec_readonly_p (output_bfd, 3696 input_section 3697 ->output_section)) 3698 { 3699 info->callbacks->einfo 3700 (_("%H: cannot emit fixups in read-only section\n"), 3701 input_bfd, input_section, rel->r_offset); 3702 return FALSE; 3703 } 3704 if (!h || h->root.type != bfd_link_hash_undefweak) 3705 { 3706 bfd_vma offset = _bfd_elf_section_offset 3707 (output_bfd, info, 3708 input_section, rel->r_offset); 3709 3710 if (offset != (bfd_vma)-1) 3711 { 3712 _frvfdpic_add_rofixup (output_bfd, 3713 frvfdpic_gotfixup_section 3714 (info), 3715 offset + input_section 3716 ->output_section->vma 3717 + input_section->output_offset, 3718 picrel); 3719 if (r_type == R_FRV_FUNCDESC_VALUE) 3720 _frvfdpic_add_rofixup 3721 (output_bfd, 3722 frvfdpic_gotfixup_section (info), 3723 offset 3724 + input_section->output_section->vma 3725 + input_section->output_offset + 4, picrel); 3726 } 3727 } 3728 } 3729 } 3730 else 3731 { 3732 if ((bfd_get_section_flags (output_bfd, 3733 input_section->output_section) 3734 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 3735 { 3736 bfd_vma offset; 3737 3738 if (_frvfdpic_osec_readonly_p (output_bfd, 3739 input_section 3740 ->output_section)) 3741 { 3742 info->callbacks->einfo 3743 (_("%H: cannot emit dynamic relocations" 3744 " in read-only section\n"), 3745 input_bfd, input_section, rel->r_offset); 3746 return FALSE; 3747 } 3748 3749 offset = _bfd_elf_section_offset 3750 (output_bfd, info, 3751 input_section, rel->r_offset); 3752 3753 if (offset != (bfd_vma)-1) 3754 _frvfdpic_add_dyn_reloc (output_bfd, 3755 frvfdpic_gotrel_section (info), 3756 offset + input_section 3757 ->output_section->vma 3758 + input_section->output_offset, 3759 r_type, dynindx, addend, picrel); 3760 } 3761 else if (osec) 3762 addend += osec->output_section->vma; 3763 /* We want the addend in-place because dynamic 3764 relocations are REL. Setting relocation to it 3765 should arrange for it to be installed. */ 3766 relocation = addend - rel->r_addend; 3767 } 3768 3769 if (r_type == R_FRV_FUNCDESC_VALUE) 3770 { 3771 /* If we've omitted the dynamic relocation, just emit 3772 the fixed addresses of the symbol and of the local 3773 GOT base offset. */ 3774 if (bfd_link_pde (info) 3775 && (!h || FRVFDPIC_SYM_LOCAL (info, h))) 3776 bfd_put_32 (output_bfd, 3777 frvfdpic_got_section (info)->output_section->vma 3778 + frvfdpic_got_section (info)->output_offset 3779 + frvfdpic_got_initial_offset (info), 3780 contents + rel->r_offset + 4); 3781 else 3782 /* A function descriptor used for lazy or local 3783 resolving is initialized such that its high word 3784 contains the output section index in which the 3785 PLT entries are located, and the low word 3786 contains the offset of the lazy PLT entry entry 3787 point into that section. */ 3788 bfd_put_32 (output_bfd, 3789 h && ! FRVFDPIC_SYM_LOCAL (info, h) 3790 ? 0 3791 : _frvfdpic_osec_to_segment (output_bfd, 3792 sec 3793 ->output_section), 3794 contents + rel->r_offset + 4); 3795 } 3796 } 3797 check_segment[0] = check_segment[1] = got_segment; 3798 break; 3799 3800 case R_FRV_GPREL12: 3801 case R_FRV_GPRELU12: 3802 case R_FRV_GPREL32: 3803 case R_FRV_GPRELHI: 3804 case R_FRV_GPRELLO: 3805 check_segment[0] = gprel_segment; 3806 check_segment[1] = sec 3807 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3808 : (unsigned)-1; 3809 break; 3810 3811 case R_FRV_GETTLSOFF: 3812 relocation = frvfdpic_plt_section (info)->output_section->vma 3813 + frvfdpic_plt_section (info)->output_offset 3814 + picrel->tlsplt_entry; 3815 BFD_ASSERT (picrel->tlsplt_entry != (bfd_vma)-1 3816 && picrel->tlsdesc_entry); 3817 check_segment[0] = isec_segment; 3818 check_segment[1] = plt_segment; 3819 break; 3820 3821 case R_FRV_GOTTLSDESC12: 3822 case R_FRV_GOTTLSDESCHI: 3823 case R_FRV_GOTTLSDESCLO: 3824 BFD_ASSERT (picrel->tlsdesc_entry); 3825 relocation = picrel->tlsdesc_entry; 3826 check_segment[0] = tls_segment; 3827 check_segment[1] = sec 3828 && ! bfd_is_abs_section (sec) 3829 && ! bfd_is_und_section (sec) 3830 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3831 : tls_segment; 3832 break; 3833 3834 case R_FRV_TLSMOFF12: 3835 case R_FRV_TLSMOFFHI: 3836 case R_FRV_TLSMOFFLO: 3837 case R_FRV_TLSMOFF: 3838 check_segment[0] = tls_segment; 3839 if (! sec) 3840 check_segment[1] = -1; 3841 else if (bfd_is_abs_section (sec) 3842 || bfd_is_und_section (sec)) 3843 { 3844 relocation = 0; 3845 check_segment[1] = tls_segment; 3846 } 3847 else if (sec->output_section) 3848 { 3849 relocation -= tls_biased_base (info); 3850 check_segment[1] = 3851 _frvfdpic_osec_to_segment (output_bfd, sec->output_section); 3852 } 3853 else 3854 check_segment[1] = -1; 3855 break; 3856 3857 case R_FRV_GOTTLSOFF12: 3858 case R_FRV_GOTTLSOFFHI: 3859 case R_FRV_GOTTLSOFFLO: 3860 BFD_ASSERT (picrel->tlsoff_entry); 3861 relocation = picrel->tlsoff_entry; 3862 check_segment[0] = tls_segment; 3863 check_segment[1] = sec 3864 && ! bfd_is_abs_section (sec) 3865 && ! bfd_is_und_section (sec) 3866 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3867 : tls_segment; 3868 break; 3869 3870 case R_FRV_TLSDESC_VALUE: 3871 case R_FRV_TLSOFF: 3872 /* These shouldn't be present in input object files. */ 3873 check_segment[0] = check_segment[1] = isec_segment; 3874 break; 3875 3876 case R_FRV_TLSDESC_RELAX: 3877 case R_FRV_GETTLSOFF_RELAX: 3878 case R_FRV_TLSOFF_RELAX: 3879 /* These are just annotations for relaxation, nothing to do 3880 here. */ 3881 continue; 3882 3883 default: 3884 check_segment[0] = isec_segment; 3885 check_segment[1] = sec 3886 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3887 : (unsigned)-1; 3888 break; 3889 } 3890 3891 if (check_segment[0] != check_segment[1] && IS_FDPIC (output_bfd)) 3892 { 3893 /* If you take this out, remove the #error from fdpic-static-6.d 3894 in the ld testsuite. */ 3895 /* This helps catch problems in GCC while we can't do more 3896 than static linking. The idea is to test whether the 3897 input file basename is crt0.o only once. */ 3898 if (silence_segment_error == 1) 3899 silence_segment_error = 3900 (strlen (input_bfd->filename) == 6 3901 && filename_cmp (input_bfd->filename, "crt0.o") == 0) 3902 || (strlen (input_bfd->filename) > 6 3903 && filename_cmp (input_bfd->filename 3904 + strlen (input_bfd->filename) - 7, 3905 "/crt0.o") == 0) 3906 ? -1 : 0; 3907 if (!silence_segment_error 3908 /* We don't want duplicate errors for undefined 3909 symbols. */ 3910 && !(picrel && picrel->symndx == -1 3911 && picrel->d.h->root.type == bfd_link_hash_undefined)) 3912 { 3913 info->callbacks->einfo 3914 (_("%H: reloc against `%s' references a different segment\n"), 3915 input_bfd, input_section, rel->r_offset, name); 3916 } 3917 if (!silence_segment_error && bfd_link_pic (info)) 3918 return FALSE; 3919 elf_elfheader (output_bfd)->e_flags |= EF_FRV_PIC; 3920 } 3921 3922 switch (r_type) 3923 { 3924 case R_FRV_GOTOFFHI: 3925 case R_FRV_TLSMOFFHI: 3926 /* We need the addend to be applied before we shift the 3927 value right. */ 3928 relocation += rel->r_addend; 3929 /* Fall through. */ 3930 case R_FRV_GOTHI: 3931 case R_FRV_FUNCDESC_GOTHI: 3932 case R_FRV_FUNCDESC_GOTOFFHI: 3933 case R_FRV_GOTTLSOFFHI: 3934 case R_FRV_GOTTLSDESCHI: 3935 relocation >>= 16; 3936 /* Fall through. */ 3937 3938 case R_FRV_GOTLO: 3939 case R_FRV_FUNCDESC_GOTLO: 3940 case R_FRV_GOTOFFLO: 3941 case R_FRV_FUNCDESC_GOTOFFLO: 3942 case R_FRV_GOTTLSOFFLO: 3943 case R_FRV_GOTTLSDESCLO: 3944 case R_FRV_TLSMOFFLO: 3945 relocation &= 0xffff; 3946 break; 3947 3948 default: 3949 break; 3950 } 3951 3952 switch (r_type) 3953 { 3954 case R_FRV_LABEL24: 3955 if (! IS_FDPIC (output_bfd) || ! picrel->plt) 3956 break; 3957 /* Fall through. */ 3958 3959 /* When referencing a GOT entry, a function descriptor or a 3960 PLT, we don't want the addend to apply to the reference, 3961 but rather to the referenced symbol. The actual entry 3962 will have already been created taking the addend into 3963 account, so cancel it out here. */ 3964 case R_FRV_GOT12: 3965 case R_FRV_GOTHI: 3966 case R_FRV_GOTLO: 3967 case R_FRV_FUNCDESC_GOT12: 3968 case R_FRV_FUNCDESC_GOTHI: 3969 case R_FRV_FUNCDESC_GOTLO: 3970 case R_FRV_FUNCDESC_GOTOFF12: 3971 case R_FRV_FUNCDESC_GOTOFFHI: 3972 case R_FRV_FUNCDESC_GOTOFFLO: 3973 case R_FRV_GETTLSOFF: 3974 case R_FRV_GOTTLSDESC12: 3975 case R_FRV_GOTTLSDESCHI: 3976 case R_FRV_GOTTLSDESCLO: 3977 case R_FRV_GOTTLSOFF12: 3978 case R_FRV_GOTTLSOFFHI: 3979 case R_FRV_GOTTLSOFFLO: 3980 /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF12 3981 here, since we do want to apply the addend to the others. 3982 Note that we've applied the addend to GOTOFFHI before we 3983 shifted it right. */ 3984 case R_FRV_GOTOFFHI: 3985 case R_FRV_TLSMOFFHI: 3986 relocation -= rel->r_addend; 3987 break; 3988 3989 default: 3990 break; 3991 } 3992 3993 if (r_type == R_FRV_HI16) 3994 r = elf32_frv_relocate_hi16 (input_bfd, rel, contents, relocation); 3995 3996 else if (r_type == R_FRV_LO16) 3997 r = elf32_frv_relocate_lo16 (input_bfd, rel, contents, relocation); 3998 3999 else if (r_type == R_FRV_LABEL24 || r_type == R_FRV_GETTLSOFF) 4000 r = elf32_frv_relocate_label24 (input_bfd, input_section, rel, 4001 contents, relocation); 4002 4003 else if (r_type == R_FRV_GPREL12) 4004 r = elf32_frv_relocate_gprel12 (info, input_bfd, input_section, rel, 4005 contents, relocation); 4006 4007 else if (r_type == R_FRV_GPRELU12) 4008 r = elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, rel, 4009 contents, relocation); 4010 4011 else if (r_type == R_FRV_GPRELLO) 4012 r = elf32_frv_relocate_gprello (info, input_bfd, input_section, rel, 4013 contents, relocation); 4014 4015 else if (r_type == R_FRV_GPRELHI) 4016 r = elf32_frv_relocate_gprelhi (info, input_bfd, input_section, rel, 4017 contents, relocation); 4018 4019 else if (r_type == R_FRV_TLSOFF 4020 || r_type == R_FRV_TLSDESC_VALUE) 4021 r = bfd_reloc_notsupported; 4022 4023 else 4024 r = frv_final_link_relocate (howto, input_bfd, input_section, contents, 4025 rel, relocation); 4026 4027 if (r != bfd_reloc_ok) 4028 { 4029 const char * msg = (const char *) NULL; 4030 4031 switch (r) 4032 { 4033 case bfd_reloc_overflow: 4034 r = info->callbacks->reloc_overflow 4035 (info, (h ? &h->root : NULL), name, howto->name, 4036 (bfd_vma) 0, input_bfd, input_section, rel->r_offset); 4037 break; 4038 4039 case bfd_reloc_undefined: 4040 r = info->callbacks->undefined_symbol 4041 (info, name, input_bfd, input_section, rel->r_offset, TRUE); 4042 break; 4043 4044 case bfd_reloc_outofrange: 4045 msg = _("internal error: out of range error"); 4046 break; 4047 4048 case bfd_reloc_notsupported: 4049 msg = _("internal error: unsupported relocation error"); 4050 break; 4051 4052 case bfd_reloc_dangerous: 4053 msg = _("internal error: dangerous relocation"); 4054 break; 4055 4056 default: 4057 msg = _("internal error: unknown error"); 4058 break; 4059 } 4060 4061 if (msg) 4062 { 4063 info->callbacks->einfo 4064 (_("%H: reloc against `%s': %s\n"), 4065 input_bfd, input_section, rel->r_offset, name, msg); 4066 return FALSE; 4067 } 4068 4069 if (! r) 4070 return FALSE; 4071 } 4072 } 4073 4074 return TRUE; 4075 } 4076 4077 /* Return the section that should be marked against GC for a given 4078 relocation. */ 4079 4080 static asection * 4081 elf32_frv_gc_mark_hook (asection *sec, 4082 struct bfd_link_info *info, 4083 Elf_Internal_Rela *rel, 4084 struct elf_link_hash_entry *h, 4085 Elf_Internal_Sym *sym) 4086 { 4087 if (h != NULL) 4088 switch (ELF32_R_TYPE (rel->r_info)) 4089 { 4090 case R_FRV_GNU_VTINHERIT: 4091 case R_FRV_GNU_VTENTRY: 4092 return NULL; 4093 } 4094 4095 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 4096 } 4097 4098 /* Hook called by the linker routine which adds symbols from an object 4099 file. We use it to put .comm items in .scomm, and not .comm. */ 4100 4101 static bfd_boolean 4102 elf32_frv_add_symbol_hook (bfd *abfd, 4103 struct bfd_link_info *info, 4104 Elf_Internal_Sym *sym, 4105 const char **namep ATTRIBUTE_UNUSED, 4106 flagword *flagsp ATTRIBUTE_UNUSED, 4107 asection **secp, 4108 bfd_vma *valp) 4109 { 4110 if (sym->st_shndx == SHN_COMMON 4111 && !bfd_link_relocatable (info) 4112 && (int)sym->st_size <= (int)bfd_get_gp_size (abfd)) 4113 { 4114 /* Common symbols less than or equal to -G nn bytes are 4115 automatically put into .sbss. */ 4116 4117 asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); 4118 4119 if (scomm == NULL) 4120 { 4121 scomm = bfd_make_section_with_flags (abfd, ".scommon", 4122 (SEC_ALLOC 4123 | SEC_IS_COMMON 4124 | SEC_LINKER_CREATED)); 4125 if (scomm == NULL) 4126 return FALSE; 4127 } 4128 4129 *secp = scomm; 4130 *valp = sym->st_size; 4131 } 4132 4133 return TRUE; 4134 } 4135 4136 /* We need dynamic symbols for every section, since segments can 4137 relocate independently. */ 4138 static bfd_boolean 4139 _frvfdpic_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED, 4140 struct bfd_link_info *info 4141 ATTRIBUTE_UNUSED, 4142 asection *p ATTRIBUTE_UNUSED) 4143 { 4144 switch (elf_section_data (p)->this_hdr.sh_type) 4145 { 4146 case SHT_PROGBITS: 4147 case SHT_NOBITS: 4148 /* If sh_type is yet undecided, assume it could be 4149 SHT_PROGBITS/SHT_NOBITS. */ 4150 case SHT_NULL: 4151 return FALSE; 4152 4153 /* There shouldn't be section relative relocations 4154 against any other section. */ 4155 default: 4156 return TRUE; 4157 } 4158 } 4159 4160 /* Create a .got section, as well as its additional info field. This 4161 is almost entirely copied from 4162 elflink.c:_bfd_elf_create_got_section(). */ 4163 4164 static bfd_boolean 4165 _frv_create_got_section (bfd *abfd, struct bfd_link_info *info) 4166 { 4167 flagword flags, pltflags; 4168 asection *s; 4169 struct elf_link_hash_entry *h; 4170 struct bfd_link_hash_entry *bh; 4171 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 4172 int ptralign; 4173 int offset; 4174 4175 /* This function may be called more than once. */ 4176 s = bfd_get_linker_section (abfd, ".got"); 4177 if (s != NULL) 4178 return TRUE; 4179 4180 /* Machine specific: although pointers are 32-bits wide, we want the 4181 GOT to be aligned to a 64-bit boundary, such that function 4182 descriptors in it can be accessed with 64-bit loads and 4183 stores. */ 4184 ptralign = 3; 4185 4186 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 4187 | SEC_LINKER_CREATED); 4188 pltflags = flags; 4189 4190 s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); 4191 if (s == NULL 4192 || !bfd_set_section_alignment (abfd, s, ptralign)) 4193 return FALSE; 4194 4195 if (bed->want_got_plt) 4196 { 4197 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); 4198 if (s == NULL 4199 || !bfd_set_section_alignment (abfd, s, ptralign)) 4200 return FALSE; 4201 } 4202 4203 if (bed->want_got_sym) 4204 { 4205 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got 4206 (or .got.plt) section. We don't do this in the linker script 4207 because we don't want to define the symbol if we are not creating 4208 a global offset table. */ 4209 h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_"); 4210 elf_hash_table (info)->hgot = h; 4211 if (h == NULL) 4212 return FALSE; 4213 4214 /* Machine-specific: we want the symbol for executables as 4215 well. */ 4216 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 4217 return FALSE; 4218 } 4219 4220 /* The first bit of the global offset table is the header. */ 4221 s->size += bed->got_header_size; 4222 4223 /* This is the machine-specific part. Create and initialize section 4224 data for the got. */ 4225 if (IS_FDPIC (abfd)) 4226 { 4227 frvfdpic_got_section (info) = s; 4228 frvfdpic_relocs_info (info) = htab_try_create (1, 4229 frvfdpic_relocs_info_hash, 4230 frvfdpic_relocs_info_eq, 4231 (htab_del) NULL); 4232 if (! frvfdpic_relocs_info (info)) 4233 return FALSE; 4234 4235 s = bfd_make_section_anyway_with_flags (abfd, ".rel.got", 4236 (flags | SEC_READONLY)); 4237 if (s == NULL 4238 || ! bfd_set_section_alignment (abfd, s, 2)) 4239 return FALSE; 4240 4241 frvfdpic_gotrel_section (info) = s; 4242 4243 /* Machine-specific. */ 4244 s = bfd_make_section_anyway_with_flags (abfd, ".rofixup", 4245 (flags | SEC_READONLY)); 4246 if (s == NULL 4247 || ! bfd_set_section_alignment (abfd, s, 2)) 4248 return FALSE; 4249 4250 frvfdpic_gotfixup_section (info) = s; 4251 offset = -2048; 4252 flags = BSF_GLOBAL; 4253 } 4254 else 4255 { 4256 offset = 2048; 4257 flags = BSF_GLOBAL | BSF_WEAK; 4258 } 4259 4260 /* Define _gp in .rofixup, for FDPIC, or .got otherwise. If it 4261 turns out that we're linking with a different linker script, the 4262 linker script will override it. */ 4263 bh = NULL; 4264 if (!(_bfd_generic_link_add_one_symbol 4265 (info, abfd, "_gp", flags, s, offset, (const char *) NULL, FALSE, 4266 bed->collect, &bh))) 4267 return FALSE; 4268 h = (struct elf_link_hash_entry *) bh; 4269 h->def_regular = 1; 4270 h->type = STT_OBJECT; 4271 /* h->other = STV_HIDDEN; */ /* Should we? */ 4272 4273 /* Machine-specific: we want the symbol for executables as well. */ 4274 if (IS_FDPIC (abfd) && ! bfd_elf_link_record_dynamic_symbol (info, h)) 4275 return FALSE; 4276 4277 if (!IS_FDPIC (abfd)) 4278 return TRUE; 4279 4280 /* FDPIC supports Thread Local Storage, and this may require a 4281 procedure linkage table for TLS PLT entries. */ 4282 4283 /* This is mostly copied from 4284 elflink.c:_bfd_elf_create_dynamic_sections(). */ 4285 4286 flags = pltflags; 4287 pltflags |= SEC_CODE; 4288 if (bed->plt_not_loaded) 4289 pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS); 4290 if (bed->plt_readonly) 4291 pltflags |= SEC_READONLY; 4292 4293 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags); 4294 if (s == NULL 4295 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) 4296 return FALSE; 4297 /* FRV-specific: remember it. */ 4298 frvfdpic_plt_section (info) = s; 4299 4300 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the 4301 .plt section. */ 4302 if (bed->want_plt_sym) 4303 { 4304 h = _bfd_elf_define_linkage_sym (abfd, info, s, 4305 "_PROCEDURE_LINKAGE_TABLE_"); 4306 elf_hash_table (info)->hplt = h; 4307 if (h == NULL) 4308 return FALSE; 4309 } 4310 4311 /* FRV-specific: we want rel relocations for the plt. */ 4312 s = bfd_make_section_anyway_with_flags (abfd, ".rel.plt", 4313 flags | SEC_READONLY); 4314 if (s == NULL 4315 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 4316 return FALSE; 4317 /* FRV-specific: remember it. */ 4318 frvfdpic_pltrel_section (info) = s; 4319 4320 return TRUE; 4321 } 4322 4323 /* Make sure the got and plt sections exist, and that our pointers in 4324 the link hash table point to them. */ 4325 4326 static bfd_boolean 4327 elf32_frvfdpic_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 4328 { 4329 /* This is mostly copied from 4330 elflink.c:_bfd_elf_create_dynamic_sections(). */ 4331 flagword flags; 4332 asection *s; 4333 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 4334 4335 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 4336 | SEC_LINKER_CREATED); 4337 4338 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and 4339 .rel[a].bss sections. */ 4340 4341 /* FRV-specific: we want to create the GOT and the PLT in the FRV 4342 way. */ 4343 if (! _frv_create_got_section (abfd, info)) 4344 return FALSE; 4345 4346 /* FRV-specific: make sure we created everything we wanted. */ 4347 BFD_ASSERT (frvfdpic_got_section (info) && frvfdpic_gotrel_section (info) 4348 && frvfdpic_gotfixup_section (info) 4349 && frvfdpic_plt_section (info) 4350 && frvfdpic_pltrel_section (info)); 4351 4352 if (bed->want_dynbss) 4353 { 4354 /* The .dynbss section is a place to put symbols which are defined 4355 by dynamic objects, are referenced by regular objects, and are 4356 not functions. We must allocate space for them in the process 4357 image and use a R_*_COPY reloc to tell the dynamic linker to 4358 initialize them at run time. The linker script puts the .dynbss 4359 section into the .bss section of the final image. */ 4360 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss", 4361 SEC_ALLOC | SEC_LINKER_CREATED); 4362 if (s == NULL) 4363 return FALSE; 4364 4365 /* The .rel[a].bss section holds copy relocs. This section is not 4366 normally needed. We need to create it here, though, so that the 4367 linker will map it to an output section. We can't just create it 4368 only if we need it, because we will not know whether we need it 4369 until we have seen all the input files, and the first time the 4370 main linker code calls BFD after examining all the input files 4371 (size_dynamic_sections) the input sections have already been 4372 mapped to the output sections. If the section turns out not to 4373 be needed, we can discard it later. We will never need this 4374 section when generating a shared object, since they do not use 4375 copy relocs. */ 4376 if (! bfd_link_pic (info)) 4377 { 4378 s = bfd_make_section_anyway_with_flags (abfd, 4379 (bed->default_use_rela_p 4380 ? ".rela.bss" : ".rel.bss"), 4381 flags | SEC_READONLY); 4382 if (s == NULL 4383 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 4384 return FALSE; 4385 } 4386 } 4387 4388 return TRUE; 4389 } 4390 4391 /* Compute the total GOT and PLT size required by each symbol in each 4392 range. Symbols may require up to 4 words in the GOT: an entry 4393 pointing to the symbol, an entry pointing to its function 4394 descriptor, and a private function descriptors taking two 4395 words. */ 4396 4397 static void 4398 _frvfdpic_count_nontls_entries (struct frvfdpic_relocs_info *entry, 4399 struct _frvfdpic_dynamic_got_info *dinfo) 4400 { 4401 /* Allocate space for a GOT entry pointing to the symbol. */ 4402 if (entry->got12) 4403 dinfo->got12 += 4; 4404 else if (entry->gotlos) 4405 dinfo->gotlos += 4; 4406 else if (entry->gothilo) 4407 dinfo->gothilo += 4; 4408 else 4409 entry->relocs32--; 4410 entry->relocs32++; 4411 4412 /* Allocate space for a GOT entry pointing to the function 4413 descriptor. */ 4414 if (entry->fdgot12) 4415 dinfo->got12 += 4; 4416 else if (entry->fdgotlos) 4417 dinfo->gotlos += 4; 4418 else if (entry->fdgothilo) 4419 dinfo->gothilo += 4; 4420 else 4421 entry->relocsfd--; 4422 entry->relocsfd++; 4423 4424 /* Decide whether we need a PLT entry, a function descriptor in the 4425 GOT, and a lazy PLT entry for this symbol. */ 4426 entry->plt = entry->call 4427 && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) 4428 && elf_hash_table (dinfo->info)->dynamic_sections_created; 4429 entry->privfd = entry->plt 4430 || entry->fdgoff12 || entry->fdgofflos || entry->fdgoffhilo 4431 || ((entry->fd || entry->fdgot12 || entry->fdgotlos || entry->fdgothilo) 4432 && (entry->symndx != -1 4433 || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h))); 4434 entry->lazyplt = entry->privfd 4435 && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) 4436 && ! (dinfo->info->flags & DF_BIND_NOW) 4437 && elf_hash_table (dinfo->info)->dynamic_sections_created; 4438 4439 /* Allocate space for a function descriptor. */ 4440 if (entry->fdgoff12) 4441 dinfo->fd12 += 8; 4442 else if (entry->fdgofflos) 4443 dinfo->fdlos += 8; 4444 else if (entry->privfd && entry->plt) 4445 dinfo->fdplt += 8; 4446 else if (entry->privfd) 4447 dinfo->fdhilo += 8; 4448 else 4449 entry->relocsfdv--; 4450 entry->relocsfdv++; 4451 4452 if (entry->lazyplt) 4453 dinfo->lzplt += 8; 4454 } 4455 4456 /* Compute the total GOT size required by each TLS symbol in each 4457 range. Symbols may require up to 5 words in the GOT: an entry 4458 holding the TLS offset for the symbol, and an entry with a full TLS 4459 descriptor taking 4 words. */ 4460 4461 static void 4462 _frvfdpic_count_tls_entries (struct frvfdpic_relocs_info *entry, 4463 struct _frvfdpic_dynamic_got_info *dinfo, 4464 bfd_boolean subtract) 4465 { 4466 const int l = subtract ? -1 : 1; 4467 4468 /* Allocate space for a GOT entry with the TLS offset of the 4469 symbol. */ 4470 if (entry->tlsoff12) 4471 dinfo->got12 += 4 * l; 4472 else if (entry->tlsofflos) 4473 dinfo->gotlos += 4 * l; 4474 else if (entry->tlsoffhilo) 4475 dinfo->gothilo += 4 * l; 4476 else 4477 entry->relocstlsoff -= l; 4478 entry->relocstlsoff += l; 4479 4480 /* If there's any TLSOFF relocation, mark the output file as not 4481 suitable for dlopening. This mark will remain even if we relax 4482 all such relocations, but this is not a problem, since we'll only 4483 do so for executables, and we definitely don't want anyone 4484 dlopening executables. */ 4485 if (entry->relocstlsoff) 4486 dinfo->info->flags |= DF_STATIC_TLS; 4487 4488 /* Allocate space for a TLS descriptor. */ 4489 if (entry->tlsdesc12) 4490 dinfo->tlsd12 += 8 * l; 4491 else if (entry->tlsdesclos) 4492 dinfo->tlsdlos += 8 * l; 4493 else if (entry->tlsplt) 4494 dinfo->tlsdplt += 8 * l; 4495 else if (entry->tlsdeschilo) 4496 dinfo->tlsdhilo += 8 * l; 4497 else 4498 entry->relocstlsd -= l; 4499 entry->relocstlsd += l; 4500 } 4501 4502 /* Compute the number of dynamic relocations and fixups that a symbol 4503 requires, and add (or subtract) from the grand and per-symbol 4504 totals. */ 4505 4506 static void 4507 _frvfdpic_count_relocs_fixups (struct frvfdpic_relocs_info *entry, 4508 struct _frvfdpic_dynamic_got_info *dinfo, 4509 bfd_boolean subtract) 4510 { 4511 bfd_vma relocs = 0, fixups = 0, tlsrets = 0; 4512 4513 if (!bfd_link_pde (dinfo->info)) 4514 { 4515 relocs = entry->relocs32 + entry->relocsfd + entry->relocsfdv 4516 + entry->relocstlsd; 4517 4518 /* In the executable, TLS relocations to symbols that bind 4519 locally (including those that resolve to global TLS offsets) 4520 are resolved immediately, without any need for fixups or 4521 dynamic relocations. In shared libraries, however, we must 4522 emit dynamic relocations even for local symbols, because we 4523 don't know the module id the library is going to get at 4524 run-time, nor its TLS base offset. */ 4525 if (!bfd_link_executable (dinfo->info) 4526 || (entry->symndx == -1 4527 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))) 4528 relocs += entry->relocstlsoff; 4529 } 4530 else 4531 { 4532 if (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)) 4533 { 4534 if (entry->symndx != -1 4535 || entry->d.h->root.type != bfd_link_hash_undefweak) 4536 fixups += entry->relocs32 + 2 * entry->relocsfdv; 4537 fixups += entry->relocstlsd; 4538 tlsrets += entry->relocstlsd; 4539 } 4540 else 4541 { 4542 relocs += entry->relocs32 + entry->relocsfdv 4543 + entry->relocstlsoff + entry->relocstlsd; 4544 } 4545 4546 if (entry->symndx != -1 4547 || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h)) 4548 { 4549 if (entry->symndx != -1 4550 || entry->d.h->root.type != bfd_link_hash_undefweak) 4551 fixups += entry->relocsfd; 4552 } 4553 else 4554 relocs += entry->relocsfd; 4555 } 4556 4557 if (subtract) 4558 { 4559 relocs = - relocs; 4560 fixups = - fixups; 4561 tlsrets = - tlsrets; 4562 } 4563 4564 entry->dynrelocs += relocs; 4565 entry->fixups += fixups; 4566 dinfo->relocs += relocs; 4567 dinfo->fixups += fixups; 4568 dinfo->tls_ret_refs += tlsrets; 4569 } 4570 4571 /* Look for opportunities to relax TLS relocations. We can assume 4572 we're linking the main executable or a static-tls library, since 4573 otherwise we wouldn't have got here. When relaxing, we have to 4574 first undo any previous accounting of TLS uses of fixups, dynamic 4575 relocations, GOT and PLT entries. */ 4576 4577 static void 4578 _frvfdpic_relax_tls_entries (struct frvfdpic_relocs_info *entry, 4579 struct _frvfdpic_dynamic_got_info *dinfo, 4580 bfd_boolean relaxing) 4581 { 4582 bfd_boolean changed = ! relaxing; 4583 4584 BFD_ASSERT (bfd_link_executable (dinfo->info) 4585 || (dinfo->info->flags & DF_STATIC_TLS)); 4586 4587 if (entry->tlsdesc12 || entry->tlsdesclos || entry->tlsdeschilo) 4588 { 4589 if (! changed) 4590 { 4591 _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE); 4592 _frvfdpic_count_tls_entries (entry, dinfo, TRUE); 4593 changed = TRUE; 4594 } 4595 4596 /* When linking an executable, we can always decay GOTTLSDESC to 4597 TLSMOFF, if the symbol is local, or GOTTLSOFF, otherwise. 4598 When linking a static-tls shared library, using TLSMOFF is 4599 not an option, but we can still use GOTTLSOFF. When decaying 4600 to GOTTLSOFF, we must keep the GOT entry in range. We know 4601 it has to fit because we'll be trading the 4 words of hte TLS 4602 descriptor for a single word in the same range. */ 4603 if (! bfd_link_executable (dinfo->info) 4604 || (entry->symndx == -1 4605 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))) 4606 { 4607 entry->tlsoff12 |= entry->tlsdesc12; 4608 entry->tlsofflos |= entry->tlsdesclos; 4609 entry->tlsoffhilo |= entry->tlsdeschilo; 4610 } 4611 4612 entry->tlsdesc12 = entry->tlsdesclos = entry->tlsdeschilo = 0; 4613 } 4614 4615 /* We can only decay TLSOFFs or call #gettlsoff to TLSMOFF in the 4616 main executable. We have to check whether the symbol's TLSOFF is 4617 in range for a setlos. For symbols with a hash entry, we can 4618 determine exactly what to do; for others locals, we don't have 4619 addresses handy, so we use the size of the TLS section as an 4620 approximation. If we get it wrong, we'll retain a GOT entry 4621 holding the TLS offset (without dynamic relocations or fixups), 4622 but we'll still optimize away the loads from it. Since TLS sizes 4623 are generally very small, it's probably not worth attempting to 4624 do better than this. */ 4625 if ((entry->tlsplt 4626 || entry->tlsoff12 || entry->tlsofflos || entry->tlsoffhilo) 4627 && bfd_link_executable (dinfo->info) && relaxing 4628 && ((entry->symndx == -1 4629 && FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) 4630 /* The above may hold for an undefweak TLS symbol, so make 4631 sure we don't have this case before accessing def.value 4632 and def.section. */ 4633 && (entry->d.h->root.type == bfd_link_hash_undefweak 4634 || (bfd_vma)(entry->d.h->root.u.def.value 4635 + (entry->d.h->root.u.def.section 4636 ->output_section->vma) 4637 + entry->d.h->root.u.def.section->output_offset 4638 + entry->addend 4639 - tls_biased_base (dinfo->info) 4640 + 32768) < (bfd_vma)65536)) 4641 || (entry->symndx != -1 4642 && (elf_hash_table (dinfo->info)->tls_sec->size 4643 + entry->addend < 32768 + FRVFDPIC_TLS_BIAS)))) 4644 { 4645 if (! changed) 4646 { 4647 _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE); 4648 _frvfdpic_count_tls_entries (entry, dinfo, TRUE); 4649 changed = TRUE; 4650 } 4651 4652 entry->tlsplt = 4653 entry->tlsoff12 = entry->tlsofflos = entry->tlsoffhilo = 0; 4654 } 4655 4656 /* We can decay `call #gettlsoff' to a ldi #tlsoff if we already 4657 have a #gottlsoff12 relocation for this entry, or if we can fit 4658 one more in the 12-bit (and 16-bit) ranges. */ 4659 if (entry->tlsplt 4660 && (entry->tlsoff12 4661 || (relaxing 4662 && dinfo->got12 + dinfo->fd12 + dinfo->tlsd12 <= 4096 - 12 - 4 4663 && (dinfo->got12 + dinfo->fd12 + dinfo->tlsd12 4664 + dinfo->gotlos + dinfo->fdlos + dinfo->tlsdlos 4665 <= 65536 - 12 - 4)))) 4666 { 4667 if (! changed) 4668 { 4669 _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE); 4670 _frvfdpic_count_tls_entries (entry, dinfo, TRUE); 4671 changed = TRUE; 4672 } 4673 4674 entry->tlsoff12 = 1; 4675 entry->tlsplt = 0; 4676 } 4677 4678 if (changed) 4679 { 4680 _frvfdpic_count_tls_entries (entry, dinfo, FALSE); 4681 _frvfdpic_count_relocs_fixups (entry, dinfo, FALSE); 4682 } 4683 4684 return; 4685 } 4686 4687 /* Compute the total GOT and PLT size required by each symbol in each range. * 4688 Symbols may require up to 4 words in the GOT: an entry pointing to 4689 the symbol, an entry pointing to its function descriptor, and a 4690 private function descriptors taking two words. */ 4691 4692 static int 4693 _frvfdpic_count_got_plt_entries (void **entryp, void *dinfo_) 4694 { 4695 struct frvfdpic_relocs_info *entry = *entryp; 4696 struct _frvfdpic_dynamic_got_info *dinfo = dinfo_; 4697 4698 _frvfdpic_count_nontls_entries (entry, dinfo); 4699 4700 if (bfd_link_executable (dinfo->info) 4701 || (dinfo->info->flags & DF_STATIC_TLS)) 4702 _frvfdpic_relax_tls_entries (entry, dinfo, FALSE); 4703 else 4704 { 4705 _frvfdpic_count_tls_entries (entry, dinfo, FALSE); 4706 _frvfdpic_count_relocs_fixups (entry, dinfo, FALSE); 4707 } 4708 4709 return 1; 4710 } 4711 4712 /* Determine the positive and negative ranges to be used by each 4713 offset range in the GOT. FDCUR and CUR, that must be aligned to a 4714 double-word boundary, are the minimum (negative) and maximum 4715 (positive) GOT offsets already used by previous ranges, except for 4716 an ODD entry that may have been left behind. GOT and FD indicate 4717 the size of GOT entries and function descriptors that must be 4718 placed within the range from -WRAP to WRAP. If there's room left, 4719 up to FDPLT bytes should be reserved for additional function 4720 descriptors. */ 4721 4722 inline static bfd_signed_vma 4723 _frvfdpic_compute_got_alloc_data (struct _frvfdpic_dynamic_got_alloc_data *gad, 4724 bfd_signed_vma fdcur, 4725 bfd_signed_vma odd, 4726 bfd_signed_vma cur, 4727 bfd_vma got, 4728 bfd_vma fd, 4729 bfd_vma fdplt, 4730 bfd_vma tlsd, 4731 bfd_vma tlsdplt, 4732 bfd_vma wrap) 4733 { 4734 bfd_signed_vma wrapmin = -wrap; 4735 const bfd_vma tdescsz = 8; 4736 4737 /* Start at the given initial points. */ 4738 gad->fdcur = fdcur; 4739 gad->cur = cur; 4740 4741 /* If we had an incoming odd word and we have any got entries that 4742 are going to use it, consume it, otherwise leave gad->odd at 4743 zero. We might force gad->odd to zero and return the incoming 4744 odd such that it is used by the next range, but then GOT entries 4745 might appear to be out of order and we wouldn't be able to 4746 shorten the GOT by one word if it turns out to end with an 4747 unpaired GOT entry. */ 4748 if (odd && got) 4749 { 4750 gad->odd = odd; 4751 got -= 4; 4752 odd = 0; 4753 } 4754 else 4755 gad->odd = 0; 4756 4757 /* If we're left with an unpaired GOT entry, compute its location 4758 such that we can return it. Otherwise, if got doesn't require an 4759 odd number of words here, either odd was already zero in the 4760 block above, or it was set to zero because got was non-zero, or 4761 got was already zero. In the latter case, we want the value of 4762 odd to carry over to the return statement, so we don't want to 4763 reset odd unless the condition below is true. */ 4764 if (got & 4) 4765 { 4766 odd = cur + got; 4767 got += 4; 4768 } 4769 4770 /* Compute the tentative boundaries of this range. */ 4771 gad->max = cur + got; 4772 gad->min = fdcur - fd; 4773 gad->fdplt = 0; 4774 4775 /* If function descriptors took too much space, wrap some of them 4776 around. */ 4777 if (gad->min < wrapmin) 4778 { 4779 gad->max += wrapmin - gad->min; 4780 gad->tmin = gad->min = wrapmin; 4781 } 4782 4783 /* If GOT entries took too much space, wrap some of them around. 4784 This may well cause gad->min to become lower than wrapmin. This 4785 will cause a relocation overflow later on, so we don't have to 4786 report it here . */ 4787 if ((bfd_vma) gad->max > wrap) 4788 { 4789 gad->min -= gad->max - wrap; 4790 gad->max = wrap; 4791 } 4792 4793 /* Add TLS descriptors. */ 4794 gad->tmax = gad->max + tlsd; 4795 gad->tmin = gad->min; 4796 gad->tlsdplt = 0; 4797 4798 /* If TLS descriptors took too much space, wrap an integral number 4799 of them around. */ 4800 if ((bfd_vma) gad->tmax > wrap) 4801 { 4802 bfd_vma wrapsize = gad->tmax - wrap; 4803 4804 wrapsize += tdescsz / 2; 4805 wrapsize &= ~ tdescsz / 2; 4806 4807 gad->tmin -= wrapsize; 4808 gad->tmax -= wrapsize; 4809 } 4810 4811 /* If there is space left and we have function descriptors 4812 referenced in PLT entries that could take advantage of shorter 4813 offsets, place them now. */ 4814 if (fdplt && gad->tmin > wrapmin) 4815 { 4816 bfd_vma fds; 4817 4818 if ((bfd_vma) (gad->tmin - wrapmin) < fdplt) 4819 fds = gad->tmin - wrapmin; 4820 else 4821 fds = fdplt; 4822 4823 fdplt -= fds; 4824 gad->min -= fds; 4825 gad->tmin -= fds; 4826 gad->fdplt += fds; 4827 } 4828 4829 /* If there is more space left, try to place some more function 4830 descriptors for PLT entries. */ 4831 if (fdplt && (bfd_vma) gad->tmax < wrap) 4832 { 4833 bfd_vma fds; 4834 4835 if ((bfd_vma) (wrap - gad->tmax) < fdplt) 4836 fds = wrap - gad->tmax; 4837 else 4838 fds = fdplt; 4839 4840 fdplt -= fds; 4841 gad->max += fds; 4842 gad->tmax += fds; 4843 gad->fdplt += fds; 4844 } 4845 4846 /* If there is space left and we have TLS descriptors referenced in 4847 PLT entries that could take advantage of shorter offsets, place 4848 them now. */ 4849 if (tlsdplt && gad->tmin > wrapmin) 4850 { 4851 bfd_vma tlsds; 4852 4853 if ((bfd_vma) (gad->tmin - wrapmin) < tlsdplt) 4854 tlsds = (gad->tmin - wrapmin) & ~ (tdescsz / 2); 4855 else 4856 tlsds = tlsdplt; 4857 4858 tlsdplt -= tlsds; 4859 gad->tmin -= tlsds; 4860 gad->tlsdplt += tlsds; 4861 } 4862 4863 /* If there is more space left, try to place some more TLS 4864 descriptors for PLT entries. Although we could try to fit an 4865 additional TLS descriptor with half of it just before before the 4866 wrap point and another right past the wrap point, this might 4867 cause us to run out of space for the next region, so don't do 4868 it. */ 4869 if (tlsdplt && (bfd_vma) gad->tmax < wrap - tdescsz / 2) 4870 { 4871 bfd_vma tlsds; 4872 4873 if ((bfd_vma) (wrap - gad->tmax) < tlsdplt) 4874 tlsds = (wrap - gad->tmax) & ~ (tdescsz / 2); 4875 else 4876 tlsds = tlsdplt; 4877 4878 tlsdplt -= tlsds; 4879 gad->tmax += tlsds; 4880 gad->tlsdplt += tlsds; 4881 } 4882 4883 /* If odd was initially computed as an offset past the wrap point, 4884 wrap it around. */ 4885 if (odd > gad->max) 4886 odd = gad->min + odd - gad->max; 4887 4888 /* _frvfdpic_get_got_entry() below will always wrap gad->cur if needed 4889 before returning, so do it here too. This guarantees that, 4890 should cur and fdcur meet at the wrap point, they'll both be 4891 equal to min. */ 4892 if (gad->cur == gad->max) 4893 gad->cur = gad->min; 4894 4895 /* Ditto for _frvfdpic_get_tlsdesc_entry(). */ 4896 gad->tcur = gad->max; 4897 if (gad->tcur == gad->tmax) 4898 gad->tcur = gad->tmin; 4899 4900 return odd; 4901 } 4902 4903 /* Compute the location of the next GOT entry, given the allocation 4904 data for a range. */ 4905 4906 inline static bfd_signed_vma 4907 _frvfdpic_get_got_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) 4908 { 4909 bfd_signed_vma ret; 4910 4911 if (gad->odd) 4912 { 4913 /* If there was an odd word left behind, use it. */ 4914 ret = gad->odd; 4915 gad->odd = 0; 4916 } 4917 else 4918 { 4919 /* Otherwise, use the word pointed to by cur, reserve the next 4920 as an odd word, and skip to the next pair of words, possibly 4921 wrapping around. */ 4922 ret = gad->cur; 4923 gad->odd = gad->cur + 4; 4924 gad->cur += 8; 4925 if (gad->cur == gad->max) 4926 gad->cur = gad->min; 4927 } 4928 4929 return ret; 4930 } 4931 4932 /* Compute the location of the next function descriptor entry in the 4933 GOT, given the allocation data for a range. */ 4934 4935 inline static bfd_signed_vma 4936 _frvfdpic_get_fd_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) 4937 { 4938 /* If we're at the bottom, wrap around, and only then allocate the 4939 next pair of words. */ 4940 if (gad->fdcur == gad->min) 4941 gad->fdcur = gad->max; 4942 return gad->fdcur -= 8; 4943 } 4944 4945 /* Compute the location of the next TLS descriptor entry in the GOT, 4946 given the allocation data for a range. */ 4947 inline static bfd_signed_vma 4948 _frvfdpic_get_tlsdesc_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) 4949 { 4950 bfd_signed_vma ret; 4951 4952 ret = gad->tcur; 4953 4954 gad->tcur += 8; 4955 4956 /* If we're at the top of the region, wrap around to the bottom. */ 4957 if (gad->tcur == gad->tmax) 4958 gad->tcur = gad->tmin; 4959 4960 return ret; 4961 } 4962 4963 /* Assign GOT offsets for every GOT entry and function descriptor. 4964 Doing everything in a single pass is tricky. */ 4965 4966 static int 4967 _frvfdpic_assign_got_entries (void **entryp, void *info_) 4968 { 4969 struct frvfdpic_relocs_info *entry = *entryp; 4970 struct _frvfdpic_dynamic_got_plt_info *dinfo = info_; 4971 4972 if (entry->got12) 4973 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->got12); 4974 else if (entry->gotlos) 4975 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); 4976 else if (entry->gothilo) 4977 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); 4978 4979 if (entry->fdgot12) 4980 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->got12); 4981 else if (entry->fdgotlos) 4982 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); 4983 else if (entry->fdgothilo) 4984 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); 4985 4986 if (entry->fdgoff12) 4987 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12); 4988 else if (entry->plt && dinfo->got12.fdplt) 4989 { 4990 dinfo->got12.fdplt -= 8; 4991 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12); 4992 } 4993 else if (entry->fdgofflos) 4994 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos); 4995 else if (entry->plt && dinfo->gotlos.fdplt) 4996 { 4997 dinfo->gotlos.fdplt -= 8; 4998 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos); 4999 } 5000 else if (entry->plt) 5001 { 5002 dinfo->gothilo.fdplt -= 8; 5003 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo); 5004 } 5005 else if (entry->privfd) 5006 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo); 5007 5008 if (entry->tlsoff12) 5009 entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->got12); 5010 else if (entry->tlsofflos) 5011 entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); 5012 else if (entry->tlsoffhilo) 5013 entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); 5014 5015 if (entry->tlsdesc12) 5016 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->got12); 5017 else if (entry->tlsplt && dinfo->got12.tlsdplt) 5018 { 5019 dinfo->got12.tlsdplt -= 8; 5020 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->got12); 5021 } 5022 else if (entry->tlsdesclos) 5023 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gotlos); 5024 else if (entry->tlsplt && dinfo->gotlos.tlsdplt) 5025 { 5026 dinfo->gotlos.tlsdplt -= 8; 5027 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gotlos); 5028 } 5029 else if (entry->tlsplt) 5030 { 5031 dinfo->gothilo.tlsdplt -= 8; 5032 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gothilo); 5033 } 5034 else if (entry->tlsdeschilo) 5035 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gothilo); 5036 5037 return 1; 5038 } 5039 5040 /* Assign GOT offsets to private function descriptors used by PLT 5041 entries (or referenced by 32-bit offsets), as well as PLT entries 5042 and lazy PLT entries. */ 5043 5044 static int 5045 _frvfdpic_assign_plt_entries (void **entryp, void *info_) 5046 { 5047 struct frvfdpic_relocs_info *entry = *entryp; 5048 struct _frvfdpic_dynamic_got_plt_info *dinfo = info_; 5049 5050 if (entry->privfd) 5051 BFD_ASSERT (entry->fd_entry); 5052 5053 if (entry->plt) 5054 { 5055 int size; 5056 5057 /* We use the section's raw size to mark the location of the 5058 next PLT entry. */ 5059 entry->plt_entry = frvfdpic_plt_section (dinfo->g.info)->size; 5060 5061 /* Figure out the length of this PLT entry based on the 5062 addressing mode we need to reach the function descriptor. */ 5063 BFD_ASSERT (entry->fd_entry); 5064 if (entry->fd_entry >= -(1 << (12 - 1)) 5065 && entry->fd_entry < (1 << (12 - 1))) 5066 size = 8; 5067 else if (entry->fd_entry >= -(1 << (16 - 1)) 5068 && entry->fd_entry < (1 << (16 - 1))) 5069 size = 12; 5070 else 5071 size = 16; 5072 5073 frvfdpic_plt_section (dinfo->g.info)->size += size; 5074 } 5075 5076 if (entry->lazyplt) 5077 { 5078 entry->lzplt_entry = dinfo->g.lzplt; 5079 dinfo->g.lzplt += 8; 5080 /* If this entry is the one that gets the resolver stub, account 5081 for the additional instruction. */ 5082 if (entry->lzplt_entry % FRVFDPIC_LZPLT_BLOCK_SIZE 5083 == FRVFDPIC_LZPLT_RESOLV_LOC) 5084 dinfo->g.lzplt += 4; 5085 } 5086 5087 if (entry->tlsplt) 5088 { 5089 int size; 5090 5091 entry->tlsplt_entry 5092 = frvfdpic_plt_section (dinfo->g.info)->size; 5093 5094 if (bfd_link_executable (dinfo->g.info) 5095 && (entry->symndx != -1 5096 || FRVFDPIC_SYM_LOCAL (dinfo->g.info, entry->d.h))) 5097 { 5098 if ((bfd_signed_vma)entry->addend >= -(1 << (16 - 1)) 5099 /* FIXME: here we use the size of the TLS section 5100 as an upper bound for the value of the TLS 5101 symbol, because we may not know the exact value 5102 yet. If we get it wrong, we'll just waste a 5103 word in the PLT, and we should never get even 5104 close to 32 KiB of TLS anyway. */ 5105 && elf_hash_table (dinfo->g.info)->tls_sec 5106 && (elf_hash_table (dinfo->g.info)->tls_sec->size 5107 + (bfd_signed_vma)(entry->addend) <= (1 << (16 - 1)))) 5108 size = 8; 5109 else 5110 size = 12; 5111 } 5112 else if (entry->tlsoff_entry) 5113 { 5114 if (entry->tlsoff_entry >= -(1 << (12 - 1)) 5115 && entry->tlsoff_entry < (1 << (12 - 1))) 5116 size = 8; 5117 else if (entry->tlsoff_entry >= -(1 << (16 - 1)) 5118 && entry->tlsoff_entry < (1 << (16 - 1))) 5119 size = 12; 5120 else 5121 size = 16; 5122 } 5123 else 5124 { 5125 BFD_ASSERT (entry->tlsdesc_entry); 5126 5127 if (entry->tlsdesc_entry >= -(1 << (12 - 1)) 5128 && entry->tlsdesc_entry < (1 << (12 - 1))) 5129 size = 8; 5130 else if (entry->tlsdesc_entry >= -(1 << (16 - 1)) 5131 && entry->tlsdesc_entry < (1 << (16 - 1))) 5132 size = 12; 5133 else 5134 size = 16; 5135 } 5136 5137 frvfdpic_plt_section (dinfo->g.info)->size += size; 5138 } 5139 5140 return 1; 5141 } 5142 5143 /* Cancel out any effects of calling _frvfdpic_assign_got_entries and 5144 _frvfdpic_assign_plt_entries. */ 5145 5146 static int 5147 _frvfdpic_reset_got_plt_entries (void **entryp, void *ignore ATTRIBUTE_UNUSED) 5148 { 5149 struct frvfdpic_relocs_info *entry = *entryp; 5150 5151 entry->got_entry = 0; 5152 entry->fdgot_entry = 0; 5153 entry->fd_entry = 0; 5154 entry->plt_entry = (bfd_vma)-1; 5155 entry->lzplt_entry = (bfd_vma)-1; 5156 entry->tlsoff_entry = 0; 5157 entry->tlsdesc_entry = 0; 5158 entry->tlsplt_entry = (bfd_vma)-1; 5159 5160 return 1; 5161 } 5162 5163 /* Follow indirect and warning hash entries so that each got entry 5164 points to the final symbol definition. P must point to a pointer 5165 to the hash table we're traversing. Since this traversal may 5166 modify the hash table, we set this pointer to NULL to indicate 5167 we've made a potentially-destructive change to the hash table, so 5168 the traversal must be restarted. */ 5169 static int 5170 _frvfdpic_resolve_final_relocs_info (void **entryp, void *p) 5171 { 5172 struct frvfdpic_relocs_info *entry = *entryp; 5173 htab_t *htab = p; 5174 5175 if (entry->symndx == -1) 5176 { 5177 struct elf_link_hash_entry *h = entry->d.h; 5178 struct frvfdpic_relocs_info *oentry; 5179 5180 while (h->root.type == bfd_link_hash_indirect 5181 || h->root.type == bfd_link_hash_warning) 5182 h = (struct elf_link_hash_entry *)h->root.u.i.link; 5183 5184 if (entry->d.h == h) 5185 return 1; 5186 5187 oentry = frvfdpic_relocs_info_for_global (*htab, 0, h, entry->addend, 5188 NO_INSERT); 5189 5190 if (oentry) 5191 { 5192 /* Merge the two entries. */ 5193 frvfdpic_pic_merge_early_relocs_info (oentry, entry); 5194 htab_clear_slot (*htab, entryp); 5195 return 1; 5196 } 5197 5198 entry->d.h = h; 5199 5200 /* If we can't find this entry with the new bfd hash, re-insert 5201 it, and get the traversal restarted. */ 5202 if (! htab_find (*htab, entry)) 5203 { 5204 htab_clear_slot (*htab, entryp); 5205 entryp = htab_find_slot (*htab, entry, INSERT); 5206 if (! *entryp) 5207 *entryp = entry; 5208 /* Abort the traversal, since the whole table may have 5209 moved, and leave it up to the parent to restart the 5210 process. */ 5211 *(htab_t *)p = NULL; 5212 return 0; 5213 } 5214 } 5215 5216 return 1; 5217 } 5218 5219 /* Compute the total size of the GOT, the PLT, the dynamic relocations 5220 section and the rofixup section. Assign locations for GOT and PLT 5221 entries. */ 5222 5223 static bfd_boolean 5224 _frvfdpic_size_got_plt (bfd *output_bfd, 5225 struct _frvfdpic_dynamic_got_plt_info *gpinfop) 5226 { 5227 bfd_signed_vma odd; 5228 bfd_vma limit, tlslimit; 5229 struct bfd_link_info *info = gpinfop->g.info; 5230 bfd *dynobj = elf_hash_table (info)->dynobj; 5231 5232 memcpy (frvfdpic_dynamic_got_plt_info (info), &gpinfop->g, 5233 sizeof (gpinfop->g)); 5234 5235 odd = 12; 5236 /* Compute the total size taken by entries in the 12-bit and 16-bit 5237 ranges, to tell how many PLT function descriptors we can bring 5238 into the 12-bit range without causing the 16-bit range to 5239 overflow. */ 5240 limit = odd + gpinfop->g.got12 + gpinfop->g.gotlos 5241 + gpinfop->g.fd12 + gpinfop->g.fdlos 5242 + gpinfop->g.tlsd12 + gpinfop->g.tlsdlos; 5243 if (limit < (bfd_vma)1 << 16) 5244 limit = ((bfd_vma)1 << 16) - limit; 5245 else 5246 limit = 0; 5247 if (gpinfop->g.fdplt < limit) 5248 { 5249 tlslimit = (limit - gpinfop->g.fdplt) & ~ (bfd_vma) 8; 5250 limit = gpinfop->g.fdplt; 5251 } 5252 else 5253 tlslimit = 0; 5254 if (gpinfop->g.tlsdplt < tlslimit) 5255 tlslimit = gpinfop->g.tlsdplt; 5256 5257 /* Determine the ranges of GOT offsets that we can use for each 5258 range of addressing modes. */ 5259 odd = _frvfdpic_compute_got_alloc_data (&gpinfop->got12, 5260 0, 5261 odd, 5262 16, 5263 gpinfop->g.got12, 5264 gpinfop->g.fd12, 5265 limit, 5266 gpinfop->g.tlsd12, 5267 tlslimit, 5268 (bfd_vma)1 << (12-1)); 5269 odd = _frvfdpic_compute_got_alloc_data (&gpinfop->gotlos, 5270 gpinfop->got12.tmin, 5271 odd, 5272 gpinfop->got12.tmax, 5273 gpinfop->g.gotlos, 5274 gpinfop->g.fdlos, 5275 gpinfop->g.fdplt 5276 - gpinfop->got12.fdplt, 5277 gpinfop->g.tlsdlos, 5278 gpinfop->g.tlsdplt 5279 - gpinfop->got12.tlsdplt, 5280 (bfd_vma)1 << (16-1)); 5281 odd = _frvfdpic_compute_got_alloc_data (&gpinfop->gothilo, 5282 gpinfop->gotlos.tmin, 5283 odd, 5284 gpinfop->gotlos.tmax, 5285 gpinfop->g.gothilo, 5286 gpinfop->g.fdhilo, 5287 gpinfop->g.fdplt 5288 - gpinfop->got12.fdplt 5289 - gpinfop->gotlos.fdplt, 5290 gpinfop->g.tlsdhilo, 5291 gpinfop->g.tlsdplt 5292 - gpinfop->got12.tlsdplt 5293 - gpinfop->gotlos.tlsdplt, 5294 (bfd_vma)1 << (32-1)); 5295 5296 /* Now assign (most) GOT offsets. */ 5297 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_got_entries, 5298 gpinfop); 5299 5300 frvfdpic_got_section (info)->size = gpinfop->gothilo.tmax 5301 - gpinfop->gothilo.tmin 5302 /* If an odd word is the last word of the GOT, we don't need this 5303 word to be part of the GOT. */ 5304 - (odd + 4 == gpinfop->gothilo.tmax ? 4 : 0); 5305 if (frvfdpic_got_section (info)->size == 0) 5306 frvfdpic_got_section (info)->flags |= SEC_EXCLUDE; 5307 else if (frvfdpic_got_section (info)->size == 12 5308 && ! elf_hash_table (info)->dynamic_sections_created) 5309 { 5310 frvfdpic_got_section (info)->flags |= SEC_EXCLUDE; 5311 frvfdpic_got_section (info)->size = 0; 5312 } 5313 /* This will be non-NULL during relaxation. The assumption is that 5314 the size of one of these sections will never grow, only shrink, 5315 so we can use the larger buffer we allocated before. */ 5316 else if (frvfdpic_got_section (info)->contents == NULL) 5317 { 5318 frvfdpic_got_section (info)->contents = 5319 (bfd_byte *) bfd_zalloc (dynobj, 5320 frvfdpic_got_section (info)->size); 5321 if (frvfdpic_got_section (info)->contents == NULL) 5322 return FALSE; 5323 } 5324 5325 if (frvfdpic_gotrel_section (info)) 5326 /* Subtract the number of lzplt entries, since those will generate 5327 relocations in the pltrel section. */ 5328 frvfdpic_gotrel_section (info)->size = 5329 (gpinfop->g.relocs - gpinfop->g.lzplt / 8) 5330 * get_elf_backend_data (output_bfd)->s->sizeof_rel; 5331 else 5332 BFD_ASSERT (gpinfop->g.relocs == 0); 5333 if (frvfdpic_gotrel_section (info)->size == 0) 5334 frvfdpic_gotrel_section (info)->flags |= SEC_EXCLUDE; 5335 else if (frvfdpic_gotrel_section (info)->contents == NULL) 5336 { 5337 frvfdpic_gotrel_section (info)->contents = 5338 (bfd_byte *) bfd_zalloc (dynobj, 5339 frvfdpic_gotrel_section (info)->size); 5340 if (frvfdpic_gotrel_section (info)->contents == NULL) 5341 return FALSE; 5342 } 5343 5344 frvfdpic_gotfixup_section (info)->size = (gpinfop->g.fixups + 1) * 4; 5345 if (frvfdpic_gotfixup_section (info)->size == 0) 5346 frvfdpic_gotfixup_section (info)->flags |= SEC_EXCLUDE; 5347 else if (frvfdpic_gotfixup_section (info)->contents == NULL) 5348 { 5349 frvfdpic_gotfixup_section (info)->contents = 5350 (bfd_byte *) bfd_zalloc (dynobj, 5351 frvfdpic_gotfixup_section (info)->size); 5352 if (frvfdpic_gotfixup_section (info)->contents == NULL) 5353 return FALSE; 5354 } 5355 5356 if (frvfdpic_pltrel_section (info)) 5357 { 5358 frvfdpic_pltrel_section (info)->size = 5359 gpinfop->g.lzplt / 8 5360 * get_elf_backend_data (output_bfd)->s->sizeof_rel; 5361 if (frvfdpic_pltrel_section (info)->size == 0) 5362 frvfdpic_pltrel_section (info)->flags |= SEC_EXCLUDE; 5363 else if (frvfdpic_pltrel_section (info)->contents == NULL) 5364 { 5365 frvfdpic_pltrel_section (info)->contents = 5366 (bfd_byte *) bfd_zalloc (dynobj, 5367 frvfdpic_pltrel_section (info)->size); 5368 if (frvfdpic_pltrel_section (info)->contents == NULL) 5369 return FALSE; 5370 } 5371 } 5372 5373 /* Add 4 bytes for every block of at most 65535 lazy PLT entries, 5374 such that there's room for the additional instruction needed to 5375 call the resolver. Since _frvfdpic_assign_got_entries didn't 5376 account for them, our block size is 4 bytes smaller than the real 5377 block size. */ 5378 if (frvfdpic_plt_section (info)) 5379 { 5380 frvfdpic_plt_section (info)->size = gpinfop->g.lzplt 5381 + ((gpinfop->g.lzplt + (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) - 8) 5382 / (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) * 4); 5383 } 5384 5385 /* Reset it, such that _frvfdpic_assign_plt_entries() can use it to 5386 actually assign lazy PLT entries addresses. */ 5387 gpinfop->g.lzplt = 0; 5388 5389 /* Save information that we're going to need to generate GOT and PLT 5390 entries. */ 5391 frvfdpic_got_initial_offset (info) = -gpinfop->gothilo.tmin; 5392 5393 if (get_elf_backend_data (output_bfd)->want_got_sym) 5394 elf_hash_table (info)->hgot->root.u.def.value 5395 = frvfdpic_got_initial_offset (info); 5396 5397 if (frvfdpic_plt_section (info)) 5398 frvfdpic_plt_initial_offset (info) = 5399 frvfdpic_plt_section (info)->size; 5400 5401 /* Allocate a ret statement at plt_initial_offset, to be used by 5402 locally-resolved TLS descriptors. */ 5403 if (gpinfop->g.tls_ret_refs) 5404 frvfdpic_plt_section (info)->size += 4; 5405 5406 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_plt_entries, 5407 gpinfop); 5408 5409 /* Allocate the PLT section contents only after 5410 _frvfdpic_assign_plt_entries has a chance to add the size of the 5411 non-lazy PLT entries. */ 5412 if (frvfdpic_plt_section (info)) 5413 { 5414 if (frvfdpic_plt_section (info)->size == 0) 5415 frvfdpic_plt_section (info)->flags |= SEC_EXCLUDE; 5416 else if (frvfdpic_plt_section (info)->contents == NULL) 5417 { 5418 frvfdpic_plt_section (info)->contents = 5419 (bfd_byte *) bfd_zalloc (dynobj, 5420 frvfdpic_plt_section (info)->size); 5421 if (frvfdpic_plt_section (info)->contents == NULL) 5422 return FALSE; 5423 } 5424 } 5425 5426 return TRUE; 5427 } 5428 5429 /* Set the sizes of the dynamic sections. */ 5430 5431 static bfd_boolean 5432 elf32_frvfdpic_size_dynamic_sections (bfd *output_bfd, 5433 struct bfd_link_info *info) 5434 { 5435 bfd *dynobj; 5436 asection *s; 5437 struct _frvfdpic_dynamic_got_plt_info gpinfo; 5438 5439 dynobj = elf_hash_table (info)->dynobj; 5440 BFD_ASSERT (dynobj != NULL); 5441 5442 if (elf_hash_table (info)->dynamic_sections_created) 5443 { 5444 /* Set the contents of the .interp section to the interpreter. */ 5445 if (bfd_link_executable (info) && !info->nointerp) 5446 { 5447 s = bfd_get_linker_section (dynobj, ".interp"); 5448 BFD_ASSERT (s != NULL); 5449 s->size = sizeof ELF_DYNAMIC_INTERPRETER; 5450 s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; 5451 } 5452 } 5453 5454 memset (&gpinfo, 0, sizeof (gpinfo)); 5455 gpinfo.g.info = info; 5456 5457 for (;;) 5458 { 5459 htab_t relocs = frvfdpic_relocs_info (info); 5460 5461 htab_traverse (relocs, _frvfdpic_resolve_final_relocs_info, &relocs); 5462 5463 if (relocs == frvfdpic_relocs_info (info)) 5464 break; 5465 } 5466 5467 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_count_got_plt_entries, 5468 &gpinfo.g); 5469 5470 /* Allocate space to save the summary information, we're going to 5471 use it if we're doing relaxations. */ 5472 frvfdpic_dynamic_got_plt_info (info) = bfd_alloc (dynobj, sizeof (gpinfo.g)); 5473 5474 if (!_frvfdpic_size_got_plt (output_bfd, &gpinfo)) 5475 return FALSE; 5476 5477 if (elf_hash_table (info)->dynamic_sections_created) 5478 { 5479 if (frvfdpic_got_section (info)->size) 5480 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)) 5481 return FALSE; 5482 5483 if (frvfdpic_pltrel_section (info)->size) 5484 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) 5485 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_REL) 5486 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) 5487 return FALSE; 5488 5489 if (frvfdpic_gotrel_section (info)->size) 5490 if (!_bfd_elf_add_dynamic_entry (info, DT_REL, 0) 5491 || !_bfd_elf_add_dynamic_entry (info, DT_RELSZ, 0) 5492 || !_bfd_elf_add_dynamic_entry (info, DT_RELENT, 5493 sizeof (Elf32_External_Rel))) 5494 return FALSE; 5495 } 5496 5497 return TRUE; 5498 } 5499 5500 static bfd_boolean 5501 elf32_frvfdpic_always_size_sections (bfd *output_bfd, 5502 struct bfd_link_info *info) 5503 { 5504 if (!bfd_link_relocatable (info) 5505 && !bfd_elf_stack_segment_size (output_bfd, info, 5506 "__stacksize", DEFAULT_STACK_SIZE)) 5507 return FALSE; 5508 5509 return TRUE; 5510 } 5511 5512 /* Check whether any of the relocations was optimized away, and 5513 subtract it from the relocation or fixup count. */ 5514 static bfd_boolean 5515 _frvfdpic_check_discarded_relocs (bfd *abfd, asection *sec, 5516 struct bfd_link_info *info, 5517 5518 bfd_boolean *changed) 5519 { 5520 Elf_Internal_Shdr *symtab_hdr; 5521 struct elf_link_hash_entry **sym_hashes; 5522 Elf_Internal_Rela *rel, *erel; 5523 5524 if ((sec->flags & SEC_RELOC) == 0 5525 || sec->reloc_count == 0) 5526 return TRUE; 5527 5528 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 5529 sym_hashes = elf_sym_hashes (abfd); 5530 5531 rel = elf_section_data (sec)->relocs; 5532 5533 /* Now examine each relocation. */ 5534 for (erel = rel + sec->reloc_count; rel < erel; rel++) 5535 { 5536 struct elf_link_hash_entry *h; 5537 unsigned long r_symndx; 5538 struct frvfdpic_relocs_info *picrel; 5539 struct _frvfdpic_dynamic_got_info *dinfo; 5540 5541 if (ELF32_R_TYPE (rel->r_info) != R_FRV_32 5542 && ELF32_R_TYPE (rel->r_info) != R_FRV_FUNCDESC) 5543 continue; 5544 5545 if (_bfd_elf_section_offset (sec->output_section->owner, 5546 info, sec, rel->r_offset) 5547 != (bfd_vma)-1) 5548 continue; 5549 5550 r_symndx = ELF32_R_SYM (rel->r_info); 5551 if (r_symndx < symtab_hdr->sh_info) 5552 h = NULL; 5553 else 5554 { 5555 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 5556 while (h->root.type == bfd_link_hash_indirect 5557 || h->root.type == bfd_link_hash_warning) 5558 h = (struct elf_link_hash_entry *)h->root.u.i.link; 5559 } 5560 5561 if (h != NULL) 5562 picrel = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info (info), 5563 abfd, h, 5564 rel->r_addend, NO_INSERT); 5565 else 5566 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info (info), 5567 abfd, r_symndx, 5568 rel->r_addend, NO_INSERT); 5569 5570 if (! picrel) 5571 return FALSE; 5572 5573 *changed = TRUE; 5574 dinfo = frvfdpic_dynamic_got_plt_info (info); 5575 5576 _frvfdpic_count_relocs_fixups (picrel, dinfo, TRUE); 5577 if (ELF32_R_TYPE (rel->r_info) == R_FRV_32) 5578 picrel->relocs32--; 5579 else /* we know (ELF32_R_TYPE (rel->r_info) == R_FRV_FUNCDESC) */ 5580 picrel->relocsfd--; 5581 _frvfdpic_count_relocs_fixups (picrel, dinfo, FALSE); 5582 } 5583 5584 return TRUE; 5585 } 5586 5587 static bfd_boolean 5588 frvfdpic_elf_discard_info (bfd *ibfd, 5589 struct elf_reloc_cookie *cookie ATTRIBUTE_UNUSED, 5590 struct bfd_link_info *info) 5591 { 5592 bfd_boolean changed = FALSE; 5593 asection *s; 5594 bfd *obfd = NULL; 5595 5596 /* Account for relaxation of .eh_frame section. */ 5597 for (s = ibfd->sections; s; s = s->next) 5598 if (s->sec_info_type == SEC_INFO_TYPE_EH_FRAME) 5599 { 5600 if (!_frvfdpic_check_discarded_relocs (ibfd, s, info, &changed)) 5601 return FALSE; 5602 obfd = s->output_section->owner; 5603 } 5604 5605 if (changed) 5606 { 5607 struct _frvfdpic_dynamic_got_plt_info gpinfo; 5608 5609 memset (&gpinfo, 0, sizeof (gpinfo)); 5610 memcpy (&gpinfo.g, frvfdpic_dynamic_got_plt_info (info), 5611 sizeof (gpinfo.g)); 5612 5613 /* Clear GOT and PLT assignments. */ 5614 htab_traverse (frvfdpic_relocs_info (info), 5615 _frvfdpic_reset_got_plt_entries, 5616 NULL); 5617 5618 if (!_frvfdpic_size_got_plt (obfd, &gpinfo)) 5619 return FALSE; 5620 } 5621 5622 return TRUE; 5623 } 5624 5625 /* Look for opportunities to relax TLS relocations. We can assume 5626 we're linking the main executable or a static-tls library, since 5627 otherwise we wouldn't have got here. */ 5628 5629 static int 5630 _frvfdpic_relax_got_plt_entries (void **entryp, void *dinfo_) 5631 { 5632 struct frvfdpic_relocs_info *entry = *entryp; 5633 struct _frvfdpic_dynamic_got_info *dinfo = dinfo_; 5634 5635 _frvfdpic_relax_tls_entries (entry, dinfo, TRUE); 5636 5637 return 1; 5638 } 5639 5640 static bfd_boolean 5641 elf32_frvfdpic_relax_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, 5642 struct bfd_link_info *info, bfd_boolean *again) 5643 { 5644 struct _frvfdpic_dynamic_got_plt_info gpinfo; 5645 5646 if (bfd_link_relocatable (info)) 5647 (*info->callbacks->einfo) 5648 (_("%P%F: --relax and -r may not be used together\n")); 5649 5650 /* If we return early, we didn't change anything. */ 5651 *again = FALSE; 5652 5653 /* We'll do our thing when requested to relax the GOT section. */ 5654 if (sec != frvfdpic_got_section (info)) 5655 return TRUE; 5656 5657 /* We can only relax when linking the main executable or a library 5658 that can't be dlopened. */ 5659 if (! bfd_link_executable (info) && ! (info->flags & DF_STATIC_TLS)) 5660 return TRUE; 5661 5662 /* If there isn't a TLS section for this binary, we can't do 5663 anything about its TLS relocations (it probably doesn't have 5664 any. */ 5665 if (elf_hash_table (info)->tls_sec == NULL) 5666 return TRUE; 5667 5668 memset (&gpinfo, 0, sizeof (gpinfo)); 5669 memcpy (&gpinfo.g, frvfdpic_dynamic_got_plt_info (info), sizeof (gpinfo.g)); 5670 5671 /* Now look for opportunities to relax, adjusting the GOT usage 5672 as needed. */ 5673 htab_traverse (frvfdpic_relocs_info (info), 5674 _frvfdpic_relax_got_plt_entries, 5675 &gpinfo.g); 5676 5677 /* If we changed anything, reset and re-assign GOT and PLT entries. */ 5678 if (memcmp (frvfdpic_dynamic_got_plt_info (info), 5679 &gpinfo.g, sizeof (gpinfo.g)) != 0) 5680 { 5681 /* Clear GOT and PLT assignments. */ 5682 htab_traverse (frvfdpic_relocs_info (info), 5683 _frvfdpic_reset_got_plt_entries, 5684 NULL); 5685 5686 /* The owner of the TLS section is the output bfd. There should 5687 be a better way to get to it. */ 5688 if (!_frvfdpic_size_got_plt (elf_hash_table (info)->tls_sec->owner, 5689 &gpinfo)) 5690 return FALSE; 5691 5692 /* Repeat until we don't make any further changes. We could fail to 5693 introduce changes in a round if, for example, the 12-bit range is 5694 full, but we later release some space by getting rid of TLS 5695 descriptors in it. We have to repeat the whole process because 5696 we might have changed the size of a section processed before this 5697 one. */ 5698 *again = TRUE; 5699 } 5700 5701 return TRUE; 5702 } 5703 5704 /* Fill in code and data in dynamic sections. */ 5705 5706 static bfd_boolean 5707 elf32_frv_finish_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 5708 struct bfd_link_info *info ATTRIBUTE_UNUSED) 5709 { 5710 /* Nothing to be done for non-FDPIC. */ 5711 return TRUE; 5712 } 5713 5714 static bfd_boolean 5715 elf32_frvfdpic_finish_dynamic_sections (bfd *output_bfd, 5716 struct bfd_link_info *info) 5717 { 5718 bfd *dynobj; 5719 asection *sdyn; 5720 5721 dynobj = elf_hash_table (info)->dynobj; 5722 5723 if (frvfdpic_dynamic_got_plt_info (info)) 5724 { 5725 BFD_ASSERT (frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs == 0); 5726 } 5727 if (frvfdpic_got_section (info)) 5728 { 5729 BFD_ASSERT (frvfdpic_gotrel_section (info)->size 5730 == (frvfdpic_gotrel_section (info)->reloc_count 5731 * sizeof (Elf32_External_Rel))); 5732 5733 if (frvfdpic_gotfixup_section (info)) 5734 { 5735 struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot; 5736 bfd_vma got_value = hgot->root.u.def.value 5737 + hgot->root.u.def.section->output_section->vma 5738 + hgot->root.u.def.section->output_offset; 5739 struct bfd_link_hash_entry *hend; 5740 5741 _frvfdpic_add_rofixup (output_bfd, frvfdpic_gotfixup_section (info), 5742 got_value, 0); 5743 5744 if (frvfdpic_gotfixup_section (info)->size 5745 != (frvfdpic_gotfixup_section (info)->reloc_count * 4)) 5746 { 5747 error: 5748 info->callbacks->einfo 5749 ("LINKER BUG: .rofixup section size mismatch\n"); 5750 return FALSE; 5751 } 5752 5753 hend = bfd_link_hash_lookup (info->hash, "__ROFIXUP_END__", 5754 FALSE, FALSE, TRUE); 5755 if (hend 5756 && (hend->type == bfd_link_hash_defined 5757 || hend->type == bfd_link_hash_defweak) 5758 && hend->u.def.section->output_section != NULL) 5759 { 5760 bfd_vma value = 5761 frvfdpic_gotfixup_section (info)->output_section->vma 5762 + frvfdpic_gotfixup_section (info)->output_offset 5763 + frvfdpic_gotfixup_section (info)->size 5764 - hend->u.def.section->output_section->vma 5765 - hend->u.def.section->output_offset; 5766 BFD_ASSERT (hend->u.def.value == value); 5767 if (hend->u.def.value != value) 5768 goto error; 5769 } 5770 } 5771 } 5772 if (frvfdpic_pltrel_section (info)) 5773 { 5774 BFD_ASSERT (frvfdpic_pltrel_section (info)->size 5775 == (frvfdpic_pltrel_section (info)->reloc_count 5776 * sizeof (Elf32_External_Rel))); 5777 } 5778 5779 5780 if (elf_hash_table (info)->dynamic_sections_created) 5781 { 5782 Elf32_External_Dyn * dyncon; 5783 Elf32_External_Dyn * dynconend; 5784 5785 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 5786 5787 BFD_ASSERT (sdyn != NULL); 5788 5789 dyncon = (Elf32_External_Dyn *) sdyn->contents; 5790 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); 5791 5792 for (; dyncon < dynconend; dyncon++) 5793 { 5794 Elf_Internal_Dyn dyn; 5795 5796 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 5797 5798 switch (dyn.d_tag) 5799 { 5800 default: 5801 break; 5802 5803 case DT_PLTGOT: 5804 dyn.d_un.d_ptr = frvfdpic_got_section (info)->output_section->vma 5805 + frvfdpic_got_section (info)->output_offset 5806 + frvfdpic_got_initial_offset (info); 5807 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 5808 break; 5809 5810 case DT_JMPREL: 5811 dyn.d_un.d_ptr = frvfdpic_pltrel_section (info) 5812 ->output_section->vma 5813 + frvfdpic_pltrel_section (info)->output_offset; 5814 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 5815 break; 5816 5817 case DT_PLTRELSZ: 5818 dyn.d_un.d_val = frvfdpic_pltrel_section (info)->size; 5819 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 5820 break; 5821 } 5822 } 5823 } 5824 5825 return TRUE; 5826 } 5827 5828 /* Adjust a symbol defined by a dynamic object and referenced by a 5829 regular object. */ 5830 5831 static bfd_boolean 5832 elf32_frvfdpic_adjust_dynamic_symbol 5833 (struct bfd_link_info *info ATTRIBUTE_UNUSED, 5834 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) 5835 { 5836 bfd * dynobj; 5837 5838 dynobj = elf_hash_table (info)->dynobj; 5839 5840 /* Make sure we know what is going on here. */ 5841 BFD_ASSERT (dynobj != NULL 5842 && (h->u.weakdef != NULL 5843 || (h->def_dynamic 5844 && h->ref_regular 5845 && !h->def_regular))); 5846 5847 /* If this is a weak symbol, and there is a real definition, the 5848 processor independent code will have arranged for us to see the 5849 real definition first, and we can just use the same value. */ 5850 if (h->u.weakdef != NULL) 5851 { 5852 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 5853 || h->u.weakdef->root.type == bfd_link_hash_defweak); 5854 h->root.u.def.section = h->u.weakdef->root.u.def.section; 5855 h->root.u.def.value = h->u.weakdef->root.u.def.value; 5856 } 5857 5858 return TRUE; 5859 } 5860 5861 /* Perform any actions needed for dynamic symbols. */ 5862 5863 static bfd_boolean 5864 elf32_frvfdpic_finish_dynamic_symbol 5865 (bfd *output_bfd ATTRIBUTE_UNUSED, 5866 struct bfd_link_info *info ATTRIBUTE_UNUSED, 5867 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED, 5868 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) 5869 { 5870 return TRUE; 5871 } 5872 5873 /* Decide whether to attempt to turn absptr or lsda encodings in 5874 shared libraries into pcrel within the given input section. */ 5875 5876 static bfd_boolean 5877 frvfdpic_elf_use_relative_eh_frame 5878 (bfd *input_bfd ATTRIBUTE_UNUSED, 5879 struct bfd_link_info *info ATTRIBUTE_UNUSED, 5880 asection *eh_frame_section ATTRIBUTE_UNUSED) 5881 { 5882 /* We can't use PC-relative encodings in FDPIC binaries, in general. */ 5883 return FALSE; 5884 } 5885 5886 /* Adjust the contents of an eh_frame_hdr section before they're output. */ 5887 5888 static bfd_byte 5889 frvfdpic_elf_encode_eh_address (bfd *abfd, 5890 struct bfd_link_info *info, 5891 asection *osec, bfd_vma offset, 5892 asection *loc_sec, bfd_vma loc_offset, 5893 bfd_vma *encoded) 5894 { 5895 struct elf_link_hash_entry *h; 5896 5897 h = elf_hash_table (info)->hgot; 5898 BFD_ASSERT (h && h->root.type == bfd_link_hash_defined); 5899 5900 if (! h || (_frvfdpic_osec_to_segment (abfd, osec) 5901 == _frvfdpic_osec_to_segment (abfd, loc_sec->output_section))) 5902 return _bfd_elf_encode_eh_address (abfd, info, osec, offset, 5903 loc_sec, loc_offset, encoded); 5904 5905 BFD_ASSERT (_frvfdpic_osec_to_segment (abfd, osec) 5906 == (_frvfdpic_osec_to_segment 5907 (abfd, h->root.u.def.section->output_section))); 5908 5909 *encoded = osec->vma + offset 5910 - (h->root.u.def.value 5911 + h->root.u.def.section->output_section->vma 5912 + h->root.u.def.section->output_offset); 5913 5914 return DW_EH_PE_datarel | DW_EH_PE_sdata4; 5915 } 5916 5917 /* Look through the relocs for a section during the first phase. 5918 5919 Besides handling virtual table relocs for gc, we have to deal with 5920 all sorts of PIC-related relocations. We describe below the 5921 general plan on how to handle such relocations, even though we only 5922 collect information at this point, storing them in hash tables for 5923 perusal of later passes. 5924 5925 32 relocations are propagated to the linker output when creating 5926 position-independent output. LO16 and HI16 relocations are not 5927 supposed to be encountered in this case. 5928 5929 LABEL16 should always be resolvable by the linker, since it's only 5930 used by branches. 5931 5932 LABEL24, on the other hand, is used by calls. If it turns out that 5933 the target of a call is a dynamic symbol, a PLT entry must be 5934 created for it, which triggers the creation of a private function 5935 descriptor and, unless lazy binding is disabled, a lazy PLT entry. 5936 5937 GPREL relocations require the referenced symbol to be in the same 5938 segment as _gp, but this can only be checked later. 5939 5940 All GOT, GOTOFF and FUNCDESC relocations require a .got section to 5941 exist. LABEL24 might as well, since it may require a PLT entry, 5942 that will require a got. 5943 5944 Non-FUNCDESC GOT relocations require a GOT entry to be created 5945 regardless of whether the symbol is dynamic. However, since a 5946 global symbol that turns out to not be exported may have the same 5947 address of a non-dynamic symbol, we don't assign GOT entries at 5948 this point, such that we can share them in this case. A relocation 5949 for the GOT entry always has to be created, be it to offset a 5950 private symbol by the section load address, be it to get the symbol 5951 resolved dynamically. 5952 5953 FUNCDESC GOT relocations require a GOT entry to be created, and 5954 handled as if a FUNCDESC relocation was applied to the GOT entry in 5955 an object file. 5956 5957 FUNCDESC relocations referencing a symbol that turns out to NOT be 5958 dynamic cause a private function descriptor to be created. The 5959 FUNCDESC relocation then decays to a 32 relocation that points at 5960 the private descriptor. If the symbol is dynamic, the FUNCDESC 5961 relocation is propagated to the linker output, such that the 5962 dynamic linker creates the canonical descriptor, pointing to the 5963 dynamically-resolved definition of the function. 5964 5965 Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic 5966 symbols that are assigned to the same segment as the GOT, but we 5967 can only check this later, after we know the complete set of 5968 symbols defined and/or exported. 5969 5970 FUNCDESC GOTOFF relocations require a function descriptor to be 5971 created and, unless lazy binding is disabled or the symbol is not 5972 dynamic, a lazy PLT entry. Since we can't tell at this point 5973 whether a symbol is going to be dynamic, we have to decide later 5974 whether to create a lazy PLT entry or bind the descriptor directly 5975 to the private function. 5976 5977 FUNCDESC_VALUE relocations are not supposed to be present in object 5978 files, but they may very well be simply propagated to the linker 5979 output, since they have no side effect. 5980 5981 5982 A function descriptor always requires a FUNCDESC_VALUE relocation. 5983 Whether it's in .plt.rel or not depends on whether lazy binding is 5984 enabled and on whether the referenced symbol is dynamic. 5985 5986 The existence of a lazy PLT requires the resolverStub lazy PLT 5987 entry to be present. 5988 5989 5990 As for assignment of GOT, PLT and lazy PLT entries, and private 5991 descriptors, we might do them all sequentially, but we can do 5992 better than that. For example, we can place GOT entries and 5993 private function descriptors referenced using 12-bit operands 5994 closer to the PIC register value, such that these relocations don't 5995 overflow. Those that are only referenced with LO16 relocations 5996 could come next, but we may as well place PLT-required function 5997 descriptors in the 12-bit range to make them shorter. Symbols 5998 referenced with LO16/HI16 may come next, but we may place 5999 additional function descriptors in the 16-bit range if we can 6000 reliably tell that we've already placed entries that are ever 6001 referenced with only LO16. PLT entries are therefore generated as 6002 small as possible, while not introducing relocation overflows in 6003 GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be 6004 generated before or after PLT entries, but not intermingled with 6005 them, such that we can have more lazy PLT entries in range for a 6006 branch to the resolverStub. The resolverStub should be emitted at 6007 the most distant location from the first lazy PLT entry such that 6008 it's still in range for a branch, or closer, if there isn't a need 6009 for so many lazy PLT entries. Additional lazy PLT entries may be 6010 emitted after the resolverStub, as long as branches are still in 6011 range. If the branch goes out of range, longer lazy PLT entries 6012 are emitted. 6013 6014 We could further optimize PLT and lazy PLT entries by giving them 6015 priority in assignment to closer-to-gr17 locations depending on the 6016 number of occurrences of references to them (assuming a function 6017 that's called more often is more important for performance, so its 6018 PLT entry should be faster), or taking hints from the compiler. 6019 Given infinite time and money... :-) */ 6020 6021 static bfd_boolean 6022 elf32_frv_check_relocs (bfd *abfd, 6023 struct bfd_link_info *info, 6024 asection *sec, 6025 const Elf_Internal_Rela *relocs) 6026 { 6027 Elf_Internal_Shdr *symtab_hdr; 6028 struct elf_link_hash_entry **sym_hashes; 6029 const Elf_Internal_Rela *rel; 6030 const Elf_Internal_Rela *rel_end; 6031 bfd *dynobj; 6032 struct frvfdpic_relocs_info *picrel; 6033 6034 if (bfd_link_relocatable (info)) 6035 return TRUE; 6036 6037 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 6038 sym_hashes = elf_sym_hashes (abfd); 6039 6040 dynobj = elf_hash_table (info)->dynobj; 6041 rel_end = relocs + sec->reloc_count; 6042 for (rel = relocs; rel < rel_end; rel++) 6043 { 6044 struct elf_link_hash_entry *h; 6045 unsigned long r_symndx; 6046 6047 r_symndx = ELF32_R_SYM (rel->r_info); 6048 if (r_symndx < symtab_hdr->sh_info) 6049 h = NULL; 6050 else 6051 { 6052 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 6053 while (h->root.type == bfd_link_hash_indirect 6054 || h->root.type == bfd_link_hash_warning) 6055 h = (struct elf_link_hash_entry *) h->root.u.i.link; 6056 6057 /* PR15323, ref flags aren't set for references in the same 6058 object. */ 6059 h->root.non_ir_ref = 1; 6060 } 6061 6062 switch (ELF32_R_TYPE (rel->r_info)) 6063 { 6064 case R_FRV_GETTLSOFF: 6065 case R_FRV_TLSDESC_VALUE: 6066 case R_FRV_GOTTLSDESC12: 6067 case R_FRV_GOTTLSDESCHI: 6068 case R_FRV_GOTTLSDESCLO: 6069 case R_FRV_GOTTLSOFF12: 6070 case R_FRV_GOTTLSOFFHI: 6071 case R_FRV_GOTTLSOFFLO: 6072 case R_FRV_TLSOFF: 6073 case R_FRV_GOT12: 6074 case R_FRV_GOTHI: 6075 case R_FRV_GOTLO: 6076 case R_FRV_FUNCDESC_GOT12: 6077 case R_FRV_FUNCDESC_GOTHI: 6078 case R_FRV_FUNCDESC_GOTLO: 6079 case R_FRV_GOTOFF12: 6080 case R_FRV_GOTOFFHI: 6081 case R_FRV_GOTOFFLO: 6082 case R_FRV_FUNCDESC_GOTOFF12: 6083 case R_FRV_FUNCDESC_GOTOFFHI: 6084 case R_FRV_FUNCDESC_GOTOFFLO: 6085 case R_FRV_FUNCDESC: 6086 case R_FRV_FUNCDESC_VALUE: 6087 case R_FRV_TLSMOFF12: 6088 case R_FRV_TLSMOFFHI: 6089 case R_FRV_TLSMOFFLO: 6090 case R_FRV_TLSMOFF: 6091 if (! IS_FDPIC (abfd)) 6092 goto bad_reloc; 6093 /* Fall through. */ 6094 case R_FRV_GPREL12: 6095 case R_FRV_GPRELU12: 6096 case R_FRV_GPRELHI: 6097 case R_FRV_GPRELLO: 6098 case R_FRV_LABEL24: 6099 case R_FRV_32: 6100 if (! dynobj) 6101 { 6102 elf_hash_table (info)->dynobj = dynobj = abfd; 6103 if (! _frv_create_got_section (abfd, info)) 6104 return FALSE; 6105 } 6106 if (! IS_FDPIC (abfd)) 6107 { 6108 picrel = NULL; 6109 break; 6110 } 6111 if (h != NULL) 6112 { 6113 if (h->dynindx == -1) 6114 switch (ELF_ST_VISIBILITY (h->other)) 6115 { 6116 case STV_INTERNAL: 6117 case STV_HIDDEN: 6118 break; 6119 default: 6120 bfd_elf_link_record_dynamic_symbol (info, h); 6121 break; 6122 } 6123 picrel 6124 = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info (info), 6125 abfd, h, 6126 rel->r_addend, INSERT); 6127 } 6128 else 6129 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info 6130 (info), abfd, r_symndx, 6131 rel->r_addend, INSERT); 6132 if (! picrel) 6133 return FALSE; 6134 break; 6135 6136 default: 6137 picrel = NULL; 6138 break; 6139 } 6140 6141 switch (ELF32_R_TYPE (rel->r_info)) 6142 { 6143 case R_FRV_LABEL24: 6144 if (IS_FDPIC (abfd)) 6145 picrel->call = 1; 6146 break; 6147 6148 case R_FRV_FUNCDESC_VALUE: 6149 picrel->relocsfdv++; 6150 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) 6151 picrel->relocs32--; 6152 /* Fall through. */ 6153 6154 case R_FRV_32: 6155 if (! IS_FDPIC (abfd)) 6156 break; 6157 6158 picrel->sym = 1; 6159 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) 6160 picrel->relocs32++; 6161 break; 6162 6163 case R_FRV_GOT12: 6164 picrel->got12 = 1; 6165 break; 6166 6167 case R_FRV_GOTHI: 6168 case R_FRV_GOTLO: 6169 picrel->gothilo = 1; 6170 break; 6171 6172 case R_FRV_FUNCDESC_GOT12: 6173 picrel->fdgot12 = 1; 6174 break; 6175 6176 case R_FRV_FUNCDESC_GOTHI: 6177 case R_FRV_FUNCDESC_GOTLO: 6178 picrel->fdgothilo = 1; 6179 break; 6180 6181 case R_FRV_GOTOFF12: 6182 case R_FRV_GOTOFFHI: 6183 case R_FRV_GOTOFFLO: 6184 picrel->gotoff = 1; 6185 break; 6186 6187 case R_FRV_FUNCDESC_GOTOFF12: 6188 picrel->fdgoff12 = 1; 6189 break; 6190 6191 case R_FRV_FUNCDESC_GOTOFFHI: 6192 case R_FRV_FUNCDESC_GOTOFFLO: 6193 picrel->fdgoffhilo = 1; 6194 break; 6195 6196 case R_FRV_FUNCDESC: 6197 picrel->fd = 1; 6198 picrel->relocsfd++; 6199 break; 6200 6201 case R_FRV_GETTLSOFF: 6202 picrel->tlsplt = 1; 6203 break; 6204 6205 case R_FRV_TLSDESC_VALUE: 6206 picrel->relocstlsd++; 6207 goto bad_reloc; 6208 6209 case R_FRV_GOTTLSDESC12: 6210 picrel->tlsdesc12 = 1; 6211 break; 6212 6213 case R_FRV_GOTTLSDESCHI: 6214 case R_FRV_GOTTLSDESCLO: 6215 picrel->tlsdeschilo = 1; 6216 break; 6217 6218 case R_FRV_TLSMOFF12: 6219 case R_FRV_TLSMOFFHI: 6220 case R_FRV_TLSMOFFLO: 6221 case R_FRV_TLSMOFF: 6222 break; 6223 6224 case R_FRV_GOTTLSOFF12: 6225 picrel->tlsoff12 = 1; 6226 info->flags |= DF_STATIC_TLS; 6227 break; 6228 6229 case R_FRV_GOTTLSOFFHI: 6230 case R_FRV_GOTTLSOFFLO: 6231 picrel->tlsoffhilo = 1; 6232 info->flags |= DF_STATIC_TLS; 6233 break; 6234 6235 case R_FRV_TLSOFF: 6236 picrel->relocstlsoff++; 6237 info->flags |= DF_STATIC_TLS; 6238 goto bad_reloc; 6239 6240 /* This relocation describes the C++ object vtable hierarchy. 6241 Reconstruct it for later use during GC. */ 6242 case R_FRV_GNU_VTINHERIT: 6243 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 6244 return FALSE; 6245 break; 6246 6247 /* This relocation describes which C++ vtable entries are actually 6248 used. Record for later use during GC. */ 6249 case R_FRV_GNU_VTENTRY: 6250 BFD_ASSERT (h != NULL); 6251 if (h != NULL 6252 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 6253 return FALSE; 6254 break; 6255 6256 case R_FRV_LABEL16: 6257 case R_FRV_LO16: 6258 case R_FRV_HI16: 6259 case R_FRV_GPREL12: 6260 case R_FRV_GPRELU12: 6261 case R_FRV_GPREL32: 6262 case R_FRV_GPRELHI: 6263 case R_FRV_GPRELLO: 6264 case R_FRV_TLSDESC_RELAX: 6265 case R_FRV_GETTLSOFF_RELAX: 6266 case R_FRV_TLSOFF_RELAX: 6267 break; 6268 6269 default: 6270 bad_reloc: 6271 info->callbacks->einfo 6272 (_("%B: unsupported relocation type %i\n"), 6273 abfd, ELF32_R_TYPE (rel->r_info)); 6274 return FALSE; 6275 } 6276 } 6277 6278 return TRUE; 6279 } 6280 6281 6282 /* Return the machine subcode from the ELF e_flags header. */ 6283 6284 static int 6285 elf32_frv_machine (bfd *abfd) 6286 { 6287 switch (elf_elfheader (abfd)->e_flags & EF_FRV_CPU_MASK) 6288 { 6289 default: break; 6290 case EF_FRV_CPU_FR550: return bfd_mach_fr550; 6291 case EF_FRV_CPU_FR500: return bfd_mach_fr500; 6292 case EF_FRV_CPU_FR450: return bfd_mach_fr450; 6293 case EF_FRV_CPU_FR405: return bfd_mach_fr400; 6294 case EF_FRV_CPU_FR400: return bfd_mach_fr400; 6295 case EF_FRV_CPU_FR300: return bfd_mach_fr300; 6296 case EF_FRV_CPU_SIMPLE: return bfd_mach_frvsimple; 6297 case EF_FRV_CPU_TOMCAT: return bfd_mach_frvtomcat; 6298 } 6299 6300 return bfd_mach_frv; 6301 } 6302 6303 /* Set the right machine number for a FRV ELF file. */ 6304 6305 static bfd_boolean 6306 elf32_frv_object_p (bfd *abfd) 6307 { 6308 bfd_default_set_arch_mach (abfd, bfd_arch_frv, elf32_frv_machine (abfd)); 6309 return (((elf_elfheader (abfd)->e_flags & EF_FRV_FDPIC) != 0) 6310 == (IS_FDPIC (abfd))); 6311 } 6312 6313 /* Function to set the ELF flag bits. */ 6314 6315 static bfd_boolean 6316 frv_elf_set_private_flags (bfd *abfd, flagword flags) 6317 { 6318 elf_elfheader (abfd)->e_flags = flags; 6319 elf_flags_init (abfd) = TRUE; 6320 return TRUE; 6321 } 6322 6323 /* Return true if the architecture described by elf header flag 6324 EXTENSION is an extension of the architecture described by BASE. */ 6325 6326 static bfd_boolean 6327 frv_elf_arch_extension_p (flagword base, flagword extension) 6328 { 6329 if (base == extension) 6330 return TRUE; 6331 6332 /* CPU_GENERIC code can be merged with code for a specific 6333 architecture, in which case the result is marked as being 6334 for the specific architecture. Everything is therefore 6335 an extension of CPU_GENERIC. */ 6336 if (base == EF_FRV_CPU_GENERIC) 6337 return TRUE; 6338 6339 if (extension == EF_FRV_CPU_FR450) 6340 if (base == EF_FRV_CPU_FR400 || base == EF_FRV_CPU_FR405) 6341 return TRUE; 6342 6343 if (extension == EF_FRV_CPU_FR405) 6344 if (base == EF_FRV_CPU_FR400) 6345 return TRUE; 6346 6347 return FALSE; 6348 } 6349 6350 /* Merge backend specific data from an object file to the output 6351 object file when linking. */ 6352 6353 static bfd_boolean 6354 frv_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) 6355 { 6356 flagword old_flags, old_partial; 6357 flagword new_flags, new_partial; 6358 bfd_boolean error = FALSE; 6359 char new_opt[80]; 6360 char old_opt[80]; 6361 6362 new_opt[0] = old_opt[0] = '\0'; 6363 new_flags = elf_elfheader (ibfd)->e_flags; 6364 old_flags = elf_elfheader (obfd)->e_flags; 6365 6366 if (new_flags & EF_FRV_FDPIC) 6367 new_flags &= ~EF_FRV_PIC; 6368 6369 #ifdef DEBUG 6370 (*_bfd_error_handler) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s", 6371 old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no", 6372 bfd_get_filename (ibfd)); 6373 #endif 6374 6375 if (!elf_flags_init (obfd)) /* First call, no flags set. */ 6376 { 6377 elf_flags_init (obfd) = TRUE; 6378 old_flags = new_flags; 6379 } 6380 6381 else if (new_flags == old_flags) /* Compatible flags are ok. */ 6382 ; 6383 6384 else /* Possibly incompatible flags. */ 6385 { 6386 /* Warn if different # of gprs are used. Note, 0 means nothing is 6387 said about the size of gprs. */ 6388 new_partial = (new_flags & EF_FRV_GPR_MASK); 6389 old_partial = (old_flags & EF_FRV_GPR_MASK); 6390 if (new_partial == old_partial) 6391 ; 6392 6393 else if (new_partial == 0) 6394 ; 6395 6396 else if (old_partial == 0) 6397 old_flags |= new_partial; 6398 6399 else 6400 { 6401 switch (new_partial) 6402 { 6403 default: strcat (new_opt, " -mgpr-??"); break; 6404 case EF_FRV_GPR_32: strcat (new_opt, " -mgpr-32"); break; 6405 case EF_FRV_GPR_64: strcat (new_opt, " -mgpr-64"); break; 6406 } 6407 6408 switch (old_partial) 6409 { 6410 default: strcat (old_opt, " -mgpr-??"); break; 6411 case EF_FRV_GPR_32: strcat (old_opt, " -mgpr-32"); break; 6412 case EF_FRV_GPR_64: strcat (old_opt, " -mgpr-64"); break; 6413 } 6414 } 6415 6416 /* Warn if different # of fprs are used. Note, 0 means nothing is 6417 said about the size of fprs. */ 6418 new_partial = (new_flags & EF_FRV_FPR_MASK); 6419 old_partial = (old_flags & EF_FRV_FPR_MASK); 6420 if (new_partial == old_partial) 6421 ; 6422 6423 else if (new_partial == 0) 6424 ; 6425 6426 else if (old_partial == 0) 6427 old_flags |= new_partial; 6428 6429 else 6430 { 6431 switch (new_partial) 6432 { 6433 default: strcat (new_opt, " -mfpr-?"); break; 6434 case EF_FRV_FPR_32: strcat (new_opt, " -mfpr-32"); break; 6435 case EF_FRV_FPR_64: strcat (new_opt, " -mfpr-64"); break; 6436 case EF_FRV_FPR_NONE: strcat (new_opt, " -msoft-float"); break; 6437 } 6438 6439 switch (old_partial) 6440 { 6441 default: strcat (old_opt, " -mfpr-?"); break; 6442 case EF_FRV_FPR_32: strcat (old_opt, " -mfpr-32"); break; 6443 case EF_FRV_FPR_64: strcat (old_opt, " -mfpr-64"); break; 6444 case EF_FRV_FPR_NONE: strcat (old_opt, " -msoft-float"); break; 6445 } 6446 } 6447 6448 /* Warn if different dword support was used. Note, 0 means nothing is 6449 said about the dword support. */ 6450 new_partial = (new_flags & EF_FRV_DWORD_MASK); 6451 old_partial = (old_flags & EF_FRV_DWORD_MASK); 6452 if (new_partial == old_partial) 6453 ; 6454 6455 else if (new_partial == 0) 6456 ; 6457 6458 else if (old_partial == 0) 6459 old_flags |= new_partial; 6460 6461 else 6462 { 6463 switch (new_partial) 6464 { 6465 default: strcat (new_opt, " -mdword-?"); break; 6466 case EF_FRV_DWORD_YES: strcat (new_opt, " -mdword"); break; 6467 case EF_FRV_DWORD_NO: strcat (new_opt, " -mno-dword"); break; 6468 } 6469 6470 switch (old_partial) 6471 { 6472 default: strcat (old_opt, " -mdword-?"); break; 6473 case EF_FRV_DWORD_YES: strcat (old_opt, " -mdword"); break; 6474 case EF_FRV_DWORD_NO: strcat (old_opt, " -mno-dword"); break; 6475 } 6476 } 6477 6478 /* Or in flags that accumulate (ie, if one module uses it, mark that the 6479 feature is used. */ 6480 old_flags |= new_flags & (EF_FRV_DOUBLE 6481 | EF_FRV_MEDIA 6482 | EF_FRV_MULADD 6483 | EF_FRV_NON_PIC_RELOCS); 6484 6485 /* If any module was compiled without -G0, clear the G0 bit. */ 6486 old_flags = ((old_flags & ~ EF_FRV_G0) 6487 | (old_flags & new_flags & EF_FRV_G0)); 6488 6489 /* If any module was compiled without -mnopack, clear the mnopack bit. */ 6490 old_flags = ((old_flags & ~ EF_FRV_NOPACK) 6491 | (old_flags & new_flags & EF_FRV_NOPACK)); 6492 6493 /* We don't have to do anything if the pic flags are the same, or the new 6494 module(s) were compiled with -mlibrary-pic. */ 6495 new_partial = (new_flags & EF_FRV_PIC_FLAGS); 6496 old_partial = (old_flags & EF_FRV_PIC_FLAGS); 6497 if ((new_partial == old_partial) || ((new_partial & EF_FRV_LIBPIC) != 0)) 6498 ; 6499 6500 /* If the old module(s) were compiled with -mlibrary-pic, copy in the pic 6501 flags if any from the new module. */ 6502 else if ((old_partial & EF_FRV_LIBPIC) != 0) 6503 old_flags = (old_flags & ~ EF_FRV_PIC_FLAGS) | new_partial; 6504 6505 /* If we have mixtures of -fpic and -fPIC, or in both bits. */ 6506 else if (new_partial != 0 && old_partial != 0) 6507 old_flags |= new_partial; 6508 6509 /* One module was compiled for pic and the other was not, see if we have 6510 had any relocations that are not pic-safe. */ 6511 else 6512 { 6513 if ((old_flags & EF_FRV_NON_PIC_RELOCS) == 0) 6514 old_flags |= new_partial; 6515 else 6516 { 6517 old_flags &= ~ EF_FRV_PIC_FLAGS; 6518 #ifndef FRV_NO_PIC_ERROR 6519 error = TRUE; 6520 (*_bfd_error_handler) 6521 (_("%s: compiled with %s and linked with modules that use non-pic relocations"), 6522 bfd_get_filename (ibfd), 6523 (new_flags & EF_FRV_BIGPIC) ? "-fPIC" : "-fpic"); 6524 #endif 6525 } 6526 } 6527 6528 /* Warn if different cpu is used (allow a specific cpu to override 6529 the generic cpu). */ 6530 new_partial = (new_flags & EF_FRV_CPU_MASK); 6531 old_partial = (old_flags & EF_FRV_CPU_MASK); 6532 if (frv_elf_arch_extension_p (new_partial, old_partial)) 6533 ; 6534 6535 else if (frv_elf_arch_extension_p (old_partial, new_partial)) 6536 old_flags = (old_flags & ~EF_FRV_CPU_MASK) | new_partial; 6537 6538 else 6539 { 6540 switch (new_partial) 6541 { 6542 default: strcat (new_opt, " -mcpu=?"); break; 6543 case EF_FRV_CPU_GENERIC: strcat (new_opt, " -mcpu=frv"); break; 6544 case EF_FRV_CPU_SIMPLE: strcat (new_opt, " -mcpu=simple"); break; 6545 case EF_FRV_CPU_FR550: strcat (new_opt, " -mcpu=fr550"); break; 6546 case EF_FRV_CPU_FR500: strcat (new_opt, " -mcpu=fr500"); break; 6547 case EF_FRV_CPU_FR450: strcat (new_opt, " -mcpu=fr450"); break; 6548 case EF_FRV_CPU_FR405: strcat (new_opt, " -mcpu=fr405"); break; 6549 case EF_FRV_CPU_FR400: strcat (new_opt, " -mcpu=fr400"); break; 6550 case EF_FRV_CPU_FR300: strcat (new_opt, " -mcpu=fr300"); break; 6551 case EF_FRV_CPU_TOMCAT: strcat (new_opt, " -mcpu=tomcat"); break; 6552 } 6553 6554 switch (old_partial) 6555 { 6556 default: strcat (old_opt, " -mcpu=?"); break; 6557 case EF_FRV_CPU_GENERIC: strcat (old_opt, " -mcpu=frv"); break; 6558 case EF_FRV_CPU_SIMPLE: strcat (old_opt, " -mcpu=simple"); break; 6559 case EF_FRV_CPU_FR550: strcat (old_opt, " -mcpu=fr550"); break; 6560 case EF_FRV_CPU_FR500: strcat (old_opt, " -mcpu=fr500"); break; 6561 case EF_FRV_CPU_FR450: strcat (old_opt, " -mcpu=fr450"); break; 6562 case EF_FRV_CPU_FR405: strcat (old_opt, " -mcpu=fr405"); break; 6563 case EF_FRV_CPU_FR400: strcat (old_opt, " -mcpu=fr400"); break; 6564 case EF_FRV_CPU_FR300: strcat (old_opt, " -mcpu=fr300"); break; 6565 case EF_FRV_CPU_TOMCAT: strcat (old_opt, " -mcpu=tomcat"); break; 6566 } 6567 } 6568 6569 /* Print out any mismatches from above. */ 6570 if (new_opt[0]) 6571 { 6572 error = TRUE; 6573 (*_bfd_error_handler) 6574 (_("%s: compiled with %s and linked with modules compiled with %s"), 6575 bfd_get_filename (ibfd), new_opt, old_opt); 6576 } 6577 6578 /* Warn about any other mismatches */ 6579 new_partial = (new_flags & ~ EF_FRV_ALL_FLAGS); 6580 old_partial = (old_flags & ~ EF_FRV_ALL_FLAGS); 6581 if (new_partial != old_partial) 6582 { 6583 old_flags |= new_partial; 6584 error = TRUE; 6585 (*_bfd_error_handler) 6586 (_("%s: uses different unknown e_flags (0x%lx) fields than previous modules (0x%lx)"), 6587 bfd_get_filename (ibfd), (long)new_partial, (long)old_partial); 6588 } 6589 } 6590 6591 /* If the cpu is -mcpu=simple, then set the -mnopack bit. */ 6592 if ((old_flags & EF_FRV_CPU_MASK) == EF_FRV_CPU_SIMPLE) 6593 old_flags |= EF_FRV_NOPACK; 6594 6595 /* Update the old flags now with changes made above. */ 6596 old_partial = elf_elfheader (obfd)->e_flags & EF_FRV_CPU_MASK; 6597 elf_elfheader (obfd)->e_flags = old_flags; 6598 if (old_partial != (old_flags & EF_FRV_CPU_MASK)) 6599 bfd_default_set_arch_mach (obfd, bfd_arch_frv, elf32_frv_machine (obfd)); 6600 6601 if (((new_flags & EF_FRV_FDPIC) == 0) 6602 != (! IS_FDPIC (ibfd))) 6603 { 6604 error = TRUE; 6605 if (IS_FDPIC (obfd)) 6606 (*_bfd_error_handler) 6607 (_("%s: cannot link non-fdpic object file into fdpic executable"), 6608 bfd_get_filename (ibfd)); 6609 else 6610 (*_bfd_error_handler) 6611 (_("%s: cannot link fdpic object file into non-fdpic executable"), 6612 bfd_get_filename (ibfd)); 6613 } 6614 6615 if (error) 6616 bfd_set_error (bfd_error_bad_value); 6617 6618 return !error; 6619 } 6620 6621 6622 static bfd_boolean 6623 frv_elf_print_private_bfd_data (bfd *abfd, void * ptr) 6624 { 6625 FILE *file = (FILE *) ptr; 6626 flagword flags; 6627 6628 BFD_ASSERT (abfd != NULL && ptr != NULL); 6629 6630 /* Print normal ELF private data. */ 6631 _bfd_elf_print_private_bfd_data (abfd, ptr); 6632 6633 flags = elf_elfheader (abfd)->e_flags; 6634 fprintf (file, _("private flags = 0x%lx:"), (unsigned long) flags); 6635 6636 switch (flags & EF_FRV_CPU_MASK) 6637 { 6638 default: break; 6639 case EF_FRV_CPU_SIMPLE: fprintf (file, " -mcpu=simple"); break; 6640 case EF_FRV_CPU_FR550: fprintf (file, " -mcpu=fr550"); break; 6641 case EF_FRV_CPU_FR500: fprintf (file, " -mcpu=fr500"); break; 6642 case EF_FRV_CPU_FR450: fprintf (file, " -mcpu=fr450"); break; 6643 case EF_FRV_CPU_FR405: fprintf (file, " -mcpu=fr405"); break; 6644 case EF_FRV_CPU_FR400: fprintf (file, " -mcpu=fr400"); break; 6645 case EF_FRV_CPU_FR300: fprintf (file, " -mcpu=fr300"); break; 6646 case EF_FRV_CPU_TOMCAT: fprintf (file, " -mcpu=tomcat"); break; 6647 } 6648 6649 switch (flags & EF_FRV_GPR_MASK) 6650 { 6651 default: break; 6652 case EF_FRV_GPR_32: fprintf (file, " -mgpr-32"); break; 6653 case EF_FRV_GPR_64: fprintf (file, " -mgpr-64"); break; 6654 } 6655 6656 switch (flags & EF_FRV_FPR_MASK) 6657 { 6658 default: break; 6659 case EF_FRV_FPR_32: fprintf (file, " -mfpr-32"); break; 6660 case EF_FRV_FPR_64: fprintf (file, " -mfpr-64"); break; 6661 case EF_FRV_FPR_NONE: fprintf (file, " -msoft-float"); break; 6662 } 6663 6664 switch (flags & EF_FRV_DWORD_MASK) 6665 { 6666 default: break; 6667 case EF_FRV_DWORD_YES: fprintf (file, " -mdword"); break; 6668 case EF_FRV_DWORD_NO: fprintf (file, " -mno-dword"); break; 6669 } 6670 6671 if (flags & EF_FRV_DOUBLE) 6672 fprintf (file, " -mdouble"); 6673 6674 if (flags & EF_FRV_MEDIA) 6675 fprintf (file, " -mmedia"); 6676 6677 if (flags & EF_FRV_MULADD) 6678 fprintf (file, " -mmuladd"); 6679 6680 if (flags & EF_FRV_PIC) 6681 fprintf (file, " -fpic"); 6682 6683 if (flags & EF_FRV_BIGPIC) 6684 fprintf (file, " -fPIC"); 6685 6686 if (flags & EF_FRV_LIBPIC) 6687 fprintf (file, " -mlibrary-pic"); 6688 6689 if (flags & EF_FRV_FDPIC) 6690 fprintf (file, " -mfdpic"); 6691 6692 if (flags & EF_FRV_NON_PIC_RELOCS) 6693 fprintf (file, " non-pic relocations"); 6694 6695 if (flags & EF_FRV_G0) 6696 fprintf (file, " -G0"); 6697 6698 fputc ('\n', file); 6699 return TRUE; 6700 } 6701 6702 6703 /* Support for core dump NOTE sections. */ 6704 6705 static bfd_boolean 6706 elf32_frv_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 6707 { 6708 int offset; 6709 unsigned int raw_size; 6710 6711 switch (note->descsz) 6712 { 6713 default: 6714 return FALSE; 6715 6716 /* The Linux/FRV elf_prstatus struct is 268 bytes long. The other 6717 hardcoded offsets and sizes listed below (and contained within 6718 this lexical block) refer to fields in the target's elf_prstatus 6719 struct. */ 6720 case 268: 6721 /* `pr_cursig' is at offset 12. */ 6722 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); 6723 6724 /* `pr_pid' is at offset 24. */ 6725 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); 6726 6727 /* `pr_reg' is at offset 72. */ 6728 offset = 72; 6729 6730 /* Most grok_prstatus implementations set `raw_size' to the size 6731 of the pr_reg field. For Linux/FRV, we set `raw_size' to be 6732 the size of `pr_reg' plus the size of `pr_exec_fdpic_loadmap' 6733 and `pr_interp_fdpic_loadmap', both of which (by design) 6734 immediately follow `pr_reg'. This will allow these fields to 6735 be viewed by GDB as registers. 6736 6737 `pr_reg' is 184 bytes long. `pr_exec_fdpic_loadmap' and 6738 `pr_interp_fdpic_loadmap' are 4 bytes each. */ 6739 raw_size = 184 + 4 + 4; 6740 6741 break; 6742 } 6743 6744 /* Make a ".reg/999" section. */ 6745 return _bfd_elfcore_make_pseudosection (abfd, ".reg", raw_size, 6746 note->descpos + offset); 6747 } 6748 6749 static bfd_boolean 6750 elf32_frv_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 6751 { 6752 switch (note->descsz) 6753 { 6754 default: 6755 return FALSE; 6756 6757 /* The Linux/FRV elf_prpsinfo struct is 124 bytes long. */ 6758 case 124: 6759 6760 /* `pr_fname' is found at offset 28 and is 16 bytes long. */ 6761 elf_tdata (abfd)->core->program 6762 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); 6763 6764 /* `pr_psargs' is found at offset 44 and is 80 bytes long. */ 6765 elf_tdata (abfd)->core->command 6766 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); 6767 } 6768 6769 /* Note that for some reason, a spurious space is tacked 6770 onto the end of the args in some (at least one anyway) 6771 implementations, so strip it off if it exists. */ 6772 6773 { 6774 char *command = elf_tdata (abfd)->core->command; 6775 int n = strlen (command); 6776 6777 if (0 < n && command[n - 1] == ' ') 6778 command[n - 1] = '\0'; 6779 } 6780 6781 return TRUE; 6782 } 6783 #define ELF_ARCH bfd_arch_frv 6784 #define ELF_TARGET_ID FRV_ELF_DATA 6785 #define ELF_MACHINE_CODE EM_CYGNUS_FRV 6786 #define ELF_MAXPAGESIZE 0x1000 6787 6788 #define TARGET_BIG_SYM frv_elf32_vec 6789 #define TARGET_BIG_NAME "elf32-frv" 6790 6791 #define elf_info_to_howto frv_info_to_howto_rela 6792 #define elf_backend_relocate_section elf32_frv_relocate_section 6793 #define elf_backend_gc_mark_hook elf32_frv_gc_mark_hook 6794 #define elf_backend_check_relocs elf32_frv_check_relocs 6795 #define elf_backend_object_p elf32_frv_object_p 6796 #define elf_backend_add_symbol_hook elf32_frv_add_symbol_hook 6797 6798 #define elf_backend_stack_align 8 6799 #define elf_backend_can_gc_sections 1 6800 #define elf_backend_rela_normal 1 6801 6802 #define bfd_elf32_bfd_reloc_type_lookup frv_reloc_type_lookup 6803 #define bfd_elf32_bfd_reloc_name_lookup frv_reloc_name_lookup 6804 #define bfd_elf32_bfd_set_private_flags frv_elf_set_private_flags 6805 #define bfd_elf32_bfd_merge_private_bfd_data frv_elf_merge_private_bfd_data 6806 #define bfd_elf32_bfd_print_private_bfd_data frv_elf_print_private_bfd_data 6807 6808 #define elf_backend_want_got_sym 1 6809 #define elf_backend_got_header_size 0 6810 #define elf_backend_want_got_plt 0 6811 #define elf_backend_plt_readonly 1 6812 #define elf_backend_want_plt_sym 0 6813 #define elf_backend_plt_header_size 0 6814 6815 #define elf_backend_finish_dynamic_sections \ 6816 elf32_frv_finish_dynamic_sections 6817 6818 #define elf_backend_grok_prstatus elf32_frv_grok_prstatus 6819 #define elf_backend_grok_psinfo elf32_frv_grok_psinfo 6820 6821 #include "elf32-target.h" 6822 6823 #undef ELF_MAXPAGESIZE 6824 #define ELF_MAXPAGESIZE 0x4000 6825 6826 #undef TARGET_BIG_SYM 6827 #define TARGET_BIG_SYM frv_elf32_fdpic_vec 6828 #undef TARGET_BIG_NAME 6829 #define TARGET_BIG_NAME "elf32-frvfdpic" 6830 #undef elf32_bed 6831 #define elf32_bed elf32_frvfdpic_bed 6832 6833 #undef elf_info_to_howto_rel 6834 #define elf_info_to_howto_rel frvfdpic_info_to_howto_rel 6835 6836 #undef bfd_elf32_bfd_link_hash_table_create 6837 #define bfd_elf32_bfd_link_hash_table_create \ 6838 frvfdpic_elf_link_hash_table_create 6839 #undef elf_backend_always_size_sections 6840 #define elf_backend_always_size_sections \ 6841 elf32_frvfdpic_always_size_sections 6842 6843 #undef elf_backend_create_dynamic_sections 6844 #define elf_backend_create_dynamic_sections \ 6845 elf32_frvfdpic_create_dynamic_sections 6846 #undef elf_backend_adjust_dynamic_symbol 6847 #define elf_backend_adjust_dynamic_symbol \ 6848 elf32_frvfdpic_adjust_dynamic_symbol 6849 #undef elf_backend_size_dynamic_sections 6850 #define elf_backend_size_dynamic_sections \ 6851 elf32_frvfdpic_size_dynamic_sections 6852 #undef bfd_elf32_bfd_relax_section 6853 #define bfd_elf32_bfd_relax_section \ 6854 elf32_frvfdpic_relax_section 6855 #undef elf_backend_finish_dynamic_symbol 6856 #define elf_backend_finish_dynamic_symbol \ 6857 elf32_frvfdpic_finish_dynamic_symbol 6858 #undef elf_backend_finish_dynamic_sections 6859 #define elf_backend_finish_dynamic_sections \ 6860 elf32_frvfdpic_finish_dynamic_sections 6861 6862 #undef elf_backend_discard_info 6863 #define elf_backend_discard_info \ 6864 frvfdpic_elf_discard_info 6865 #undef elf_backend_can_make_relative_eh_frame 6866 #define elf_backend_can_make_relative_eh_frame \ 6867 frvfdpic_elf_use_relative_eh_frame 6868 #undef elf_backend_can_make_lsda_relative_eh_frame 6869 #define elf_backend_can_make_lsda_relative_eh_frame \ 6870 frvfdpic_elf_use_relative_eh_frame 6871 #undef elf_backend_encode_eh_address 6872 #define elf_backend_encode_eh_address \ 6873 frvfdpic_elf_encode_eh_address 6874 6875 #undef elf_backend_may_use_rel_p 6876 #define elf_backend_may_use_rel_p 1 6877 #undef elf_backend_may_use_rela_p 6878 #define elf_backend_may_use_rela_p 1 6879 /* We use REL for dynamic relocations only. */ 6880 #undef elf_backend_default_use_rela_p 6881 #define elf_backend_default_use_rela_p 1 6882 6883 #undef elf_backend_omit_section_dynsym 6884 #define elf_backend_omit_section_dynsym _frvfdpic_link_omit_section_dynsym 6885 6886 #include "elf32-target.h" 6887