1/* FRV-specific support for 32-bit ELF. 2 Copyright 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. 3 4This file is part of BFD, the Binary File Descriptor library. 5 6This program is free software; you can redistribute it and/or modify 7it under the terms of the GNU General Public License as published by 8the Free Software Foundation; either version 2 of the License, or 9(at your option) any later version. 10 11This program is distributed in the hope that it will be useful, 12but WITHOUT ANY WARRANTY; without even the implied warranty of 13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14GNU General Public License for more details. 15 16You should have received a copy of the GNU General Public License 17along with this program; if not, write to the Free Software 18Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 19 20#include "bfd.h" 21#include "sysdep.h" 22#include "libbfd.h" 23#include "elf-bfd.h" 24#include "elf/frv.h" 25#include "elf/dwarf2.h" 26#include "hashtab.h" 27 28/* Forward declarations. */ 29static bfd_reloc_status_type elf32_frv_relocate_lo16 30 PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); 31static bfd_reloc_status_type elf32_frv_relocate_hi16 32 PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); 33static bfd_reloc_status_type elf32_frv_relocate_label24 34 PARAMS ((bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); 35static bfd_reloc_status_type elf32_frv_relocate_gprel12 36 PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, 37 bfd_byte *, bfd_vma)); 38static bfd_reloc_status_type elf32_frv_relocate_gprelu12 39 PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, 40 bfd_byte *, bfd_vma)); 41static bfd_reloc_status_type elf32_frv_relocate_gprello 42 PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, 43 bfd_byte *, bfd_vma)); 44static bfd_reloc_status_type elf32_frv_relocate_gprelhi 45 PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, 46 bfd_byte *, bfd_vma)); 47static reloc_howto_type *frv_reloc_type_lookup 48 PARAMS ((bfd *, bfd_reloc_code_real_type)); 49static void frv_info_to_howto_rela 50 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); 51static bfd_boolean elf32_frv_relocate_section 52 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, 53 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); 54static bfd_boolean elf32_frv_add_symbol_hook 55 PARAMS (( bfd *, struct bfd_link_info *, Elf_Internal_Sym *, 56 const char **, flagword *, asection **, bfd_vma *)); 57static bfd_reloc_status_type frv_final_link_relocate 58 PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, 59 Elf_Internal_Rela *, bfd_vma)); 60static bfd_boolean elf32_frv_gc_sweep_hook 61 PARAMS ((bfd *, struct bfd_link_info *, asection *, const 62 Elf_Internal_Rela *)); 63static asection * elf32_frv_gc_mark_hook 64 PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, 65 struct elf_link_hash_entry *, Elf_Internal_Sym *)); 66static bfd_boolean elf32_frv_check_relocs 67 PARAMS ((bfd *, struct bfd_link_info *, asection *, 68 const Elf_Internal_Rela *)); 69static int elf32_frv_machine 70 PARAMS ((bfd *)); 71static bfd_boolean elf32_frv_object_p 72 PARAMS ((bfd *)); 73static bfd_boolean frv_elf_set_private_flags 74 PARAMS ((bfd *, flagword)); 75static bfd_boolean frv_elf_copy_private_bfd_data 76 PARAMS ((bfd *, bfd *)); 77static bfd_boolean frv_elf_merge_private_bfd_data 78 PARAMS ((bfd *, bfd *)); 79static bfd_boolean frv_elf_print_private_bfd_data 80 PARAMS ((bfd *, PTR)); 81static bfd_boolean elf32_frv_grok_prstatus (bfd * abfd, 82 Elf_Internal_Note * note); 83static bfd_boolean elf32_frv_grok_psinfo (bfd * abfd, 84 Elf_Internal_Note * note); 85 86static reloc_howto_type elf32_frv_howto_table [] = 87{ 88 /* This reloc does nothing. */ 89 HOWTO (R_FRV_NONE, /* type */ 90 0, /* rightshift */ 91 2, /* size (0 = byte, 1 = short, 2 = long) */ 92 32, /* bitsize */ 93 FALSE, /* pc_relative */ 94 0, /* bitpos */ 95 complain_overflow_bitfield, /* complain_on_overflow */ 96 bfd_elf_generic_reloc, /* special_function */ 97 "R_FRV_NONE", /* name */ 98 FALSE, /* partial_inplace */ 99 0, /* src_mask */ 100 0, /* dst_mask */ 101 FALSE), /* pcrel_offset */ 102 103 /* A 32 bit absolute relocation. */ 104 HOWTO (R_FRV_32, /* type */ 105 0, /* rightshift */ 106 2, /* size (0 = byte, 1 = short, 2 = long) */ 107 32, /* bitsize */ 108 FALSE, /* pc_relative */ 109 0, /* bitpos */ 110 complain_overflow_bitfield, /* complain_on_overflow */ 111 bfd_elf_generic_reloc, /* special_function */ 112 "R_FRV_32", /* name */ 113 FALSE, /* partial_inplace */ 114 0xffffffff, /* src_mask */ 115 0xffffffff, /* dst_mask */ 116 FALSE), /* pcrel_offset */ 117 118 /* A 16 bit pc-relative relocation. */ 119 HOWTO (R_FRV_LABEL16, /* type */ 120 2, /* rightshift */ 121 2, /* size (0 = byte, 1 = short, 2 = long) */ 122 16, /* bitsize */ 123 TRUE, /* pc_relative */ 124 0, /* bitpos */ 125 complain_overflow_signed, /* complain_on_overflow */ 126 bfd_elf_generic_reloc, /* special_function */ 127 "R_FRV_LABEL16", /* name */ 128 FALSE, /* partial_inplace */ 129 0xffff, /* src_mask */ 130 0xffff, /* dst_mask */ 131 TRUE), /* pcrel_offset */ 132 133 /* A 24-bit pc-relative relocation. */ 134 HOWTO (R_FRV_LABEL24, /* type */ 135 2, /* rightshift */ 136 2, /* size (0 = byte, 1 = short, 2 = long) */ 137 26, /* bitsize */ 138 TRUE, /* pc_relative */ 139 0, /* bitpos */ 140 complain_overflow_bitfield, /* complain_on_overflow */ 141 bfd_elf_generic_reloc, /* special_function */ 142 "R_FRV_LABEL24", /* name */ 143 FALSE, /* partial_inplace */ 144 0x7e03ffff, /* src_mask */ 145 0x7e03ffff, /* dst_mask */ 146 TRUE), /* pcrel_offset */ 147 148 HOWTO (R_FRV_LO16, /* type */ 149 0, /* rightshift */ 150 2, /* size (0 = byte, 1 = short, 2 = long) */ 151 16, /* bitsize */ 152 FALSE, /* pc_relative */ 153 0, /* bitpos */ 154 complain_overflow_dont, /* complain_on_overflow */ 155 bfd_elf_generic_reloc, /* special_function */ 156 "R_FRV_LO16", /* name */ 157 FALSE, /* partial_inplace */ 158 0xffff, /* src_mask */ 159 0xffff, /* dst_mask */ 160 FALSE), /* pcrel_offset */ 161 162 HOWTO (R_FRV_HI16, /* type */ 163 0, /* rightshift */ 164 2, /* size (0 = byte, 1 = short, 2 = long) */ 165 16, /* bitsize */ 166 FALSE, /* pc_relative */ 167 0, /* bitpos */ 168 complain_overflow_dont, /* complain_on_overflow */ 169 bfd_elf_generic_reloc, /* special_function */ 170 "R_FRV_HI16", /* name */ 171 FALSE, /* partial_inplace */ 172 0xffff, /* src_mask */ 173 0xffff, /* dst_mask */ 174 FALSE), /* pcrel_offset */ 175 176 HOWTO (R_FRV_GPREL12, /* type */ 177 0, /* rightshift */ 178 2, /* size (0 = byte, 1 = short, 2 = long) */ 179 12, /* bitsize */ 180 FALSE, /* pc_relative */ 181 0, /* bitpos */ 182 complain_overflow_dont, /* complain_on_overflow */ 183 bfd_elf_generic_reloc, /* special_function */ 184 "R_FRV_GPREL12", /* name */ 185 FALSE, /* partial_inplace */ 186 0xfff, /* src_mask */ 187 0xfff, /* dst_mask */ 188 FALSE), /* pcrel_offset */ 189 190 HOWTO (R_FRV_GPRELU12, /* type */ 191 0, /* rightshift */ 192 2, /* size (0 = byte, 1 = short, 2 = long) */ 193 12, /* bitsize */ 194 FALSE, /* pc_relative */ 195 0, /* bitpos */ 196 complain_overflow_dont, /* complain_on_overflow */ 197 bfd_elf_generic_reloc, /* special_function */ 198 "R_FRV_GPRELU12", /* name */ 199 FALSE, /* partial_inplace */ 200 0xfff, /* src_mask */ 201 0x3f03f, /* dst_mask */ 202 FALSE), /* pcrel_offset */ 203 204 HOWTO (R_FRV_GPREL32, /* type */ 205 0, /* rightshift */ 206 2, /* size (0 = byte, 1 = short, 2 = long) */ 207 32, /* bitsize */ 208 FALSE, /* pc_relative */ 209 0, /* bitpos */ 210 complain_overflow_dont, /* complain_on_overflow */ 211 bfd_elf_generic_reloc, /* special_function */ 212 "R_FRV_GPREL32", /* name */ 213 FALSE, /* partial_inplace */ 214 0xffffffff, /* src_mask */ 215 0xffffffff, /* dst_mask */ 216 FALSE), /* pcrel_offset */ 217 218 HOWTO (R_FRV_GPRELHI, /* type */ 219 0, /* rightshift */ 220 2, /* size (0 = byte, 1 = short, 2 = long) */ 221 16, /* bitsize */ 222 FALSE, /* pc_relative */ 223 0, /* bitpos */ 224 complain_overflow_dont, /* complain_on_overflow */ 225 bfd_elf_generic_reloc, /* special_function */ 226 "R_FRV_GPRELHI", /* name */ 227 FALSE, /* partial_inplace */ 228 0xffff, /* src_mask */ 229 0xffff, /* dst_mask */ 230 FALSE), /* pcrel_offset */ 231 232 HOWTO (R_FRV_GPRELLO, /* type */ 233 0, /* rightshift */ 234 2, /* size (0 = byte, 1 = short, 2 = long) */ 235 16, /* bitsize */ 236 FALSE, /* pc_relative */ 237 0, /* bitpos */ 238 complain_overflow_dont, /* complain_on_overflow */ 239 bfd_elf_generic_reloc, /* special_function */ 240 "R_FRV_GPRELLO", /* name */ 241 FALSE, /* partial_inplace */ 242 0xffff, /* src_mask */ 243 0xffff, /* dst_mask */ 244 FALSE), /* pcrel_offset */ 245 246 /* A 12-bit signed operand with the GOT offset for the address of 247 the symbol. */ 248 HOWTO (R_FRV_GOT12, /* type */ 249 0, /* rightshift */ 250 2, /* size (0 = byte, 1 = short, 2 = long) */ 251 12, /* bitsize */ 252 FALSE, /* pc_relative */ 253 0, /* bitpos */ 254 complain_overflow_signed, /* complain_on_overflow */ 255 bfd_elf_generic_reloc, /* special_function */ 256 "R_FRV_GOT12", /* name */ 257 FALSE, /* partial_inplace */ 258 0xfff, /* src_mask */ 259 0xfff, /* dst_mask */ 260 FALSE), /* pcrel_offset */ 261 262 /* The upper 16 bits of the GOT offset for the address of the 263 symbol. */ 264 HOWTO (R_FRV_GOTHI, /* type */ 265 0, /* rightshift */ 266 2, /* size (0 = byte, 1 = short, 2 = long) */ 267 16, /* bitsize */ 268 FALSE, /* pc_relative */ 269 0, /* bitpos */ 270 complain_overflow_dont, /* complain_on_overflow */ 271 bfd_elf_generic_reloc, /* special_function */ 272 "R_FRV_GOTHI", /* name */ 273 FALSE, /* partial_inplace */ 274 0xffff, /* src_mask */ 275 0xffff, /* dst_mask */ 276 FALSE), /* pcrel_offset */ 277 278 /* The lower 16 bits of the GOT offset for the address of the 279 symbol. */ 280 HOWTO (R_FRV_GOTLO, /* type */ 281 0, /* rightshift */ 282 2, /* size (0 = byte, 1 = short, 2 = long) */ 283 16, /* bitsize */ 284 FALSE, /* pc_relative */ 285 0, /* bitpos */ 286 complain_overflow_dont, /* complain_on_overflow */ 287 bfd_elf_generic_reloc, /* special_function */ 288 "R_FRV_GOTLO", /* name */ 289 FALSE, /* partial_inplace */ 290 0xffff, /* src_mask */ 291 0xffff, /* dst_mask */ 292 FALSE), /* pcrel_offset */ 293 294 /* The 32-bit address of the canonical descriptor of a function. */ 295 HOWTO (R_FRV_FUNCDESC, /* type */ 296 0, /* rightshift */ 297 2, /* size (0 = byte, 1 = short, 2 = long) */ 298 32, /* bitsize */ 299 FALSE, /* pc_relative */ 300 0, /* bitpos */ 301 complain_overflow_bitfield, /* complain_on_overflow */ 302 bfd_elf_generic_reloc, /* special_function */ 303 "R_FRV_FUNCDESC", /* name */ 304 FALSE, /* partial_inplace */ 305 0xffffffff, /* src_mask */ 306 0xffffffff, /* dst_mask */ 307 FALSE), /* pcrel_offset */ 308 309 /* A 12-bit signed operand with the GOT offset for the address of 310 canonical descriptor of a function. */ 311 HOWTO (R_FRV_FUNCDESC_GOT12, /* type */ 312 0, /* rightshift */ 313 2, /* size (0 = byte, 1 = short, 2 = long) */ 314 12, /* bitsize */ 315 FALSE, /* pc_relative */ 316 0, /* bitpos */ 317 complain_overflow_signed, /* complain_on_overflow */ 318 bfd_elf_generic_reloc, /* special_function */ 319 "R_FRV_FUNCDESC_GOT12", /* name */ 320 FALSE, /* partial_inplace */ 321 0xfff, /* src_mask */ 322 0xfff, /* dst_mask */ 323 FALSE), /* pcrel_offset */ 324 325 /* The upper 16 bits of the GOT offset for the address of the 326 canonical descriptor of a function. */ 327 HOWTO (R_FRV_FUNCDESC_GOTHI, /* type */ 328 0, /* rightshift */ 329 2, /* size (0 = byte, 1 = short, 2 = long) */ 330 16, /* bitsize */ 331 FALSE, /* pc_relative */ 332 0, /* bitpos */ 333 complain_overflow_dont, /* complain_on_overflow */ 334 bfd_elf_generic_reloc, /* special_function */ 335 "R_FRV_FUNCDESC_GOTHI", /* name */ 336 FALSE, /* partial_inplace */ 337 0xffff, /* src_mask */ 338 0xffff, /* dst_mask */ 339 FALSE), /* pcrel_offset */ 340 341 /* The lower 16 bits of the GOT offset for the address of the 342 canonical descriptor of a function. */ 343 HOWTO (R_FRV_FUNCDESC_GOTLO, /* type */ 344 0, /* rightshift */ 345 2, /* size (0 = byte, 1 = short, 2 = long) */ 346 16, /* bitsize */ 347 FALSE, /* pc_relative */ 348 0, /* bitpos */ 349 complain_overflow_dont, /* complain_on_overflow */ 350 bfd_elf_generic_reloc, /* special_function */ 351 "R_FRV_FUNCDESC_GOTLO", /* name */ 352 FALSE, /* partial_inplace */ 353 0xffff, /* src_mask */ 354 0xffff, /* dst_mask */ 355 FALSE), /* pcrel_offset */ 356 357 /* The 64-bit descriptor of a function. */ 358 HOWTO (R_FRV_FUNCDESC_VALUE, /* type */ 359 0, /* rightshift */ 360 2, /* size (0 = byte, 1 = short, 2 = long) */ 361 64, /* bitsize */ 362 FALSE, /* pc_relative */ 363 0, /* bitpos */ 364 complain_overflow_bitfield, /* complain_on_overflow */ 365 bfd_elf_generic_reloc, /* special_function */ 366 "R_FRV_FUNCDESC_VALUE", /* name */ 367 FALSE, /* partial_inplace */ 368 0xffffffff, /* src_mask */ 369 0xffffffff, /* dst_mask */ 370 FALSE), /* pcrel_offset */ 371 372 /* A 12-bit signed operand with the GOT offset for the address of 373 canonical descriptor of a function. */ 374 HOWTO (R_FRV_FUNCDESC_GOTOFF12, /* type */ 375 0, /* rightshift */ 376 2, /* size (0 = byte, 1 = short, 2 = long) */ 377 12, /* bitsize */ 378 FALSE, /* pc_relative */ 379 0, /* bitpos */ 380 complain_overflow_signed, /* complain_on_overflow */ 381 bfd_elf_generic_reloc, /* special_function */ 382 "R_FRV_FUNCDESC_GOTOFF12", /* name */ 383 FALSE, /* partial_inplace */ 384 0xfff, /* src_mask */ 385 0xfff, /* dst_mask */ 386 FALSE), /* pcrel_offset */ 387 388 /* The upper 16 bits of the GOT offset for the address of the 389 canonical descriptor of a function. */ 390 HOWTO (R_FRV_FUNCDESC_GOTOFFHI, /* type */ 391 0, /* rightshift */ 392 2, /* size (0 = byte, 1 = short, 2 = long) */ 393 16, /* bitsize */ 394 FALSE, /* pc_relative */ 395 0, /* bitpos */ 396 complain_overflow_dont, /* complain_on_overflow */ 397 bfd_elf_generic_reloc, /* special_function */ 398 "R_FRV_FUNCDESC_GOTOFFHI", /* name */ 399 FALSE, /* partial_inplace */ 400 0xffff, /* src_mask */ 401 0xffff, /* dst_mask */ 402 FALSE), /* pcrel_offset */ 403 404 /* The lower 16 bits of the GOT offset for the address of the 405 canonical descriptor of a function. */ 406 HOWTO (R_FRV_FUNCDESC_GOTOFFLO, /* type */ 407 0, /* rightshift */ 408 2, /* size (0 = byte, 1 = short, 2 = long) */ 409 16, /* bitsize */ 410 FALSE, /* pc_relative */ 411 0, /* bitpos */ 412 complain_overflow_dont, /* complain_on_overflow */ 413 bfd_elf_generic_reloc, /* special_function */ 414 "R_FRV_FUNCDESC_GOTOFFLO", /* name */ 415 FALSE, /* partial_inplace */ 416 0xffff, /* src_mask */ 417 0xffff, /* dst_mask */ 418 FALSE), /* pcrel_offset */ 419 420 /* A 12-bit signed operand with the GOT offset for the address of 421 the symbol. */ 422 HOWTO (R_FRV_GOTOFF12, /* type */ 423 0, /* rightshift */ 424 2, /* size (0 = byte, 1 = short, 2 = long) */ 425 12, /* bitsize */ 426 FALSE, /* pc_relative */ 427 0, /* bitpos */ 428 complain_overflow_signed, /* complain_on_overflow */ 429 bfd_elf_generic_reloc, /* special_function */ 430 "R_FRV_GOTOFF12", /* name */ 431 FALSE, /* partial_inplace */ 432 0xfff, /* src_mask */ 433 0xfff, /* dst_mask */ 434 FALSE), /* pcrel_offset */ 435 436 /* The upper 16 bits of the GOT offset for the address of the 437 symbol. */ 438 HOWTO (R_FRV_GOTOFFHI, /* type */ 439 0, /* rightshift */ 440 2, /* size (0 = byte, 1 = short, 2 = long) */ 441 16, /* bitsize */ 442 FALSE, /* pc_relative */ 443 0, /* bitpos */ 444 complain_overflow_dont, /* complain_on_overflow */ 445 bfd_elf_generic_reloc, /* special_function */ 446 "R_FRV_GOTOFFHI", /* name */ 447 FALSE, /* partial_inplace */ 448 0xffff, /* src_mask */ 449 0xffff, /* dst_mask */ 450 FALSE), /* pcrel_offset */ 451 452 /* The lower 16 bits of the GOT offset for the address of the 453 symbol. */ 454 HOWTO (R_FRV_GOTOFFLO, /* type */ 455 0, /* rightshift */ 456 2, /* size (0 = byte, 1 = short, 2 = long) */ 457 16, /* bitsize */ 458 FALSE, /* pc_relative */ 459 0, /* bitpos */ 460 complain_overflow_dont, /* complain_on_overflow */ 461 bfd_elf_generic_reloc, /* special_function */ 462 "R_FRV_GOTOFFLO", /* name */ 463 FALSE, /* partial_inplace */ 464 0xffff, /* src_mask */ 465 0xffff, /* dst_mask */ 466 FALSE), /* pcrel_offset */ 467 468 /* A 24-bit pc-relative relocation referencing the TLS PLT entry for 469 a thread-local symbol. If the symbol number is 0, it refers to 470 the module. */ 471 HOWTO (R_FRV_GETTLSOFF, /* type */ 472 2, /* rightshift */ 473 2, /* size (0 = byte, 1 = short, 2 = long) */ 474 26, /* bitsize */ 475 TRUE, /* pc_relative */ 476 0, /* bitpos */ 477 complain_overflow_bitfield, /* complain_on_overflow */ 478 bfd_elf_generic_reloc, /* special_function */ 479 "R_FRV_GETTLSOFF", /* name */ 480 FALSE, /* partial_inplace */ 481 0x7e03ffff, /* src_mask */ 482 0x7e03ffff, /* dst_mask */ 483 TRUE), /* pcrel_offset */ 484 485 /* A 64-bit TLS descriptor for a symbol. This relocation is only 486 valid as a REL, dynamic relocation. */ 487 HOWTO (R_FRV_TLSDESC_VALUE, /* type */ 488 0, /* rightshift */ 489 2, /* size (0 = byte, 1 = short, 2 = long) */ 490 64, /* bitsize */ 491 FALSE, /* pc_relative */ 492 0, /* bitpos */ 493 complain_overflow_bitfield, /* complain_on_overflow */ 494 bfd_elf_generic_reloc, /* special_function */ 495 "R_FRV_TLSDESC_VALUE", /* name */ 496 FALSE, /* partial_inplace */ 497 0xffffffff, /* src_mask */ 498 0xffffffff, /* dst_mask */ 499 FALSE), /* pcrel_offset */ 500 501 /* A 12-bit signed operand with the GOT offset for the TLS 502 descriptor of the symbol. */ 503 HOWTO (R_FRV_GOTTLSDESC12, /* type */ 504 0, /* rightshift */ 505 2, /* size (0 = byte, 1 = short, 2 = long) */ 506 12, /* bitsize */ 507 FALSE, /* pc_relative */ 508 0, /* bitpos */ 509 complain_overflow_signed, /* complain_on_overflow */ 510 bfd_elf_generic_reloc, /* special_function */ 511 "R_FRV_GOTTLSDESC12", /* name */ 512 FALSE, /* partial_inplace */ 513 0xfff, /* src_mask */ 514 0xfff, /* dst_mask */ 515 FALSE), /* pcrel_offset */ 516 517 /* The upper 16 bits of the GOT offset for the TLS descriptor of the 518 symbol. */ 519 HOWTO (R_FRV_GOTTLSDESCHI, /* type */ 520 0, /* rightshift */ 521 2, /* size (0 = byte, 1 = short, 2 = long) */ 522 16, /* bitsize */ 523 FALSE, /* pc_relative */ 524 0, /* bitpos */ 525 complain_overflow_dont, /* complain_on_overflow */ 526 bfd_elf_generic_reloc, /* special_function */ 527 "R_FRV_GOTTLSDESCHI", /* name */ 528 FALSE, /* partial_inplace */ 529 0xffff, /* src_mask */ 530 0xffff, /* dst_mask */ 531 FALSE), /* pcrel_offset */ 532 533 /* The lower 16 bits of the GOT offset for the TLS descriptor of the 534 symbol. */ 535 HOWTO (R_FRV_GOTTLSDESCLO, /* type */ 536 0, /* rightshift */ 537 2, /* size (0 = byte, 1 = short, 2 = long) */ 538 16, /* bitsize */ 539 FALSE, /* pc_relative */ 540 0, /* bitpos */ 541 complain_overflow_dont, /* complain_on_overflow */ 542 bfd_elf_generic_reloc, /* special_function */ 543 "R_FRV_GOTTLSDESCLO", /* name */ 544 FALSE, /* partial_inplace */ 545 0xffff, /* src_mask */ 546 0xffff, /* dst_mask */ 547 FALSE), /* pcrel_offset */ 548 549 /* A 12-bit signed operand with the offset from the module base 550 address to the thread-local symbol address. */ 551 HOWTO (R_FRV_TLSMOFF12, /* type */ 552 0, /* rightshift */ 553 2, /* size (0 = byte, 1 = short, 2 = long) */ 554 12, /* bitsize */ 555 FALSE, /* pc_relative */ 556 0, /* bitpos */ 557 complain_overflow_signed, /* complain_on_overflow */ 558 bfd_elf_generic_reloc, /* special_function */ 559 "R_FRV_TLSMOFF12", /* name */ 560 FALSE, /* partial_inplace */ 561 0xfff, /* src_mask */ 562 0xfff, /* dst_mask */ 563 FALSE), /* pcrel_offset */ 564 565 /* The upper 16 bits of the offset from the module base address to 566 the thread-local symbol address. */ 567 HOWTO (R_FRV_TLSMOFFHI, /* type */ 568 0, /* rightshift */ 569 2, /* size (0 = byte, 1 = short, 2 = long) */ 570 16, /* bitsize */ 571 FALSE, /* pc_relative */ 572 0, /* bitpos */ 573 complain_overflow_dont, /* complain_on_overflow */ 574 bfd_elf_generic_reloc, /* special_function */ 575 "R_FRV_TLSMOFFHI", /* name */ 576 FALSE, /* partial_inplace */ 577 0xffff, /* src_mask */ 578 0xffff, /* dst_mask */ 579 FALSE), /* pcrel_offset */ 580 581 /* The lower 16 bits of the offset from the module base address to 582 the thread-local symbol address. */ 583 HOWTO (R_FRV_TLSMOFFLO, /* type */ 584 0, /* rightshift */ 585 2, /* size (0 = byte, 1 = short, 2 = long) */ 586 16, /* bitsize */ 587 FALSE, /* pc_relative */ 588 0, /* bitpos */ 589 complain_overflow_dont, /* complain_on_overflow */ 590 bfd_elf_generic_reloc, /* special_function */ 591 "R_FRV_TLSMOFFLO", /* name */ 592 FALSE, /* partial_inplace */ 593 0xffff, /* src_mask */ 594 0xffff, /* dst_mask */ 595 FALSE), /* pcrel_offset */ 596 597 /* A 12-bit signed operand with the GOT offset for the TLSOFF entry 598 for a symbol. */ 599 HOWTO (R_FRV_GOTTLSOFF12, /* type */ 600 0, /* rightshift */ 601 2, /* size (0 = byte, 1 = short, 2 = long) */ 602 12, /* bitsize */ 603 FALSE, /* pc_relative */ 604 0, /* bitpos */ 605 complain_overflow_signed, /* complain_on_overflow */ 606 bfd_elf_generic_reloc, /* special_function */ 607 "R_FRV_GOTTLSOFF12", /* name */ 608 FALSE, /* partial_inplace */ 609 0xfff, /* src_mask */ 610 0xfff, /* dst_mask */ 611 FALSE), /* pcrel_offset */ 612 613 /* The upper 16 bits of the GOT offset for the TLSOFF entry for a 614 symbol. */ 615 HOWTO (R_FRV_GOTTLSOFFHI, /* type */ 616 0, /* rightshift */ 617 2, /* size (0 = byte, 1 = short, 2 = long) */ 618 16, /* bitsize */ 619 FALSE, /* pc_relative */ 620 0, /* bitpos */ 621 complain_overflow_dont, /* complain_on_overflow */ 622 bfd_elf_generic_reloc, /* special_function */ 623 "R_FRV_GOTTLSOFFHI", /* name */ 624 FALSE, /* partial_inplace */ 625 0xffff, /* src_mask */ 626 0xffff, /* dst_mask */ 627 FALSE), /* pcrel_offset */ 628 629 /* The lower 16 bits of the GOT offset for the TLSOFF entry for a 630 symbol. */ 631 HOWTO (R_FRV_GOTTLSOFFLO, /* type */ 632 0, /* rightshift */ 633 2, /* size (0 = byte, 1 = short, 2 = long) */ 634 16, /* bitsize */ 635 FALSE, /* pc_relative */ 636 0, /* bitpos */ 637 complain_overflow_dont, /* complain_on_overflow */ 638 bfd_elf_generic_reloc, /* special_function */ 639 "R_FRV_GOTTLSOFFLO", /* name */ 640 FALSE, /* partial_inplace */ 641 0xffff, /* src_mask */ 642 0xffff, /* dst_mask */ 643 FALSE), /* pcrel_offset */ 644 645 /* The 32-bit offset from the thread pointer (not the module base 646 address) to a thread-local symbol. */ 647 HOWTO (R_FRV_TLSOFF, /* type */ 648 0, /* rightshift */ 649 2, /* size (0 = byte, 1 = short, 2 = long) */ 650 32, /* bitsize */ 651 FALSE, /* pc_relative */ 652 0, /* bitpos */ 653 complain_overflow_dont, /* complain_on_overflow */ 654 bfd_elf_generic_reloc, /* special_function */ 655 "R_FRV_TLSOFF", /* name */ 656 FALSE, /* partial_inplace */ 657 0xffffffff, /* src_mask */ 658 0xffffffff, /* dst_mask */ 659 FALSE), /* pcrel_offset */ 660 661 /* An annotation for linker relaxation, that denotes the 662 symbol+addend whose TLS descriptor is referenced by the sum of 663 the two input registers of an ldd instruction. */ 664 HOWTO (R_FRV_TLSDESC_RELAX, /* type */ 665 0, /* rightshift */ 666 2, /* size (0 = byte, 1 = short, 2 = long) */ 667 0, /* bitsize */ 668 FALSE, /* pc_relative */ 669 0, /* bitpos */ 670 complain_overflow_dont, /* complain_on_overflow */ 671 bfd_elf_generic_reloc, /* special_function */ 672 "R_FRV_TLSDESC_RELAX", /* name */ 673 FALSE, /* partial_inplace */ 674 0, /* src_mask */ 675 0, /* dst_mask */ 676 FALSE), /* pcrel_offset */ 677 678 /* An annotation for linker relaxation, that denotes the 679 symbol+addend whose TLS resolver entry point is given by the sum 680 of the two register operands of an calll instruction. */ 681 HOWTO (R_FRV_GETTLSOFF_RELAX, /* type */ 682 0, /* rightshift */ 683 2, /* size (0 = byte, 1 = short, 2 = long) */ 684 0, /* bitsize */ 685 FALSE, /* pc_relative */ 686 0, /* bitpos */ 687 complain_overflow_dont, /* complain_on_overflow */ 688 bfd_elf_generic_reloc, /* special_function */ 689 "R_FRV_GETTLSOFF_RELAX", /* name */ 690 FALSE, /* partial_inplace */ 691 0, /* src_mask */ 692 0, /* dst_mask */ 693 FALSE), /* pcrel_offset */ 694 695 /* An annotation for linker relaxation, that denotes the 696 symbol+addend whose TLS offset GOT entry is given by the sum of 697 the two input registers of an ld instruction. */ 698 HOWTO (R_FRV_TLSOFF_RELAX, /* type */ 699 0, /* rightshift */ 700 2, /* size (0 = byte, 1 = short, 2 = long) */ 701 0, /* bitsize */ 702 FALSE, /* pc_relative */ 703 0, /* bitpos */ 704 complain_overflow_bitfield, /* complain_on_overflow */ 705 bfd_elf_generic_reloc, /* special_function */ 706 "R_FRV_TLSOFF_RELAX", /* name */ 707 FALSE, /* partial_inplace */ 708 0, /* src_mask */ 709 0, /* dst_mask */ 710 FALSE), /* pcrel_offset */ 711 712 /* A 32-bit offset from the module base address to 713 the thread-local symbol address. */ 714 HOWTO (R_FRV_TLSMOFF, /* type */ 715 0, /* rightshift */ 716 2, /* size (0 = byte, 1 = short, 2 = long) */ 717 32, /* bitsize */ 718 FALSE, /* pc_relative */ 719 0, /* bitpos */ 720 complain_overflow_dont, /* complain_on_overflow */ 721 bfd_elf_generic_reloc, /* special_function */ 722 "R_FRV_TLSMOFF", /* name */ 723 FALSE, /* partial_inplace */ 724 0xffffffff, /* src_mask */ 725 0xffffffff, /* dst_mask */ 726 FALSE), /* pcrel_offset */ 727}; 728 729/* GNU extension to record C++ vtable hierarchy. */ 730static reloc_howto_type elf32_frv_vtinherit_howto = 731 HOWTO (R_FRV_GNU_VTINHERIT, /* type */ 732 0, /* rightshift */ 733 2, /* size (0 = byte, 1 = short, 2 = long) */ 734 0, /* bitsize */ 735 FALSE, /* pc_relative */ 736 0, /* bitpos */ 737 complain_overflow_dont, /* complain_on_overflow */ 738 NULL, /* special_function */ 739 "R_FRV_GNU_VTINHERIT", /* name */ 740 FALSE, /* partial_inplace */ 741 0, /* src_mask */ 742 0, /* dst_mask */ 743 FALSE); /* pcrel_offset */ 744 745 /* GNU extension to record C++ vtable member usage. */ 746static reloc_howto_type elf32_frv_vtentry_howto = 747 HOWTO (R_FRV_GNU_VTENTRY, /* type */ 748 0, /* rightshift */ 749 2, /* size (0 = byte, 1 = short, 2 = long) */ 750 0, /* bitsize */ 751 FALSE, /* pc_relative */ 752 0, /* bitpos */ 753 complain_overflow_dont, /* complain_on_overflow */ 754 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 755 "R_FRV_GNU_VTENTRY", /* name */ 756 FALSE, /* partial_inplace */ 757 0, /* src_mask */ 758 0, /* dst_mask */ 759 FALSE); /* pcrel_offset */ 760 761/* The following 3 relocations are REL. The only difference to the 762 entries in the table above are that partial_inplace is TRUE. */ 763static reloc_howto_type elf32_frv_rel_32_howto = 764 HOWTO (R_FRV_32, /* type */ 765 0, /* rightshift */ 766 2, /* size (0 = byte, 1 = short, 2 = long) */ 767 32, /* bitsize */ 768 FALSE, /* pc_relative */ 769 0, /* bitpos */ 770 complain_overflow_bitfield, /* complain_on_overflow */ 771 bfd_elf_generic_reloc, /* special_function */ 772 "R_FRV_32", /* name */ 773 TRUE, /* partial_inplace */ 774 0xffffffff, /* src_mask */ 775 0xffffffff, /* dst_mask */ 776 FALSE); /* pcrel_offset */ 777 778static reloc_howto_type elf32_frv_rel_funcdesc_howto = 779 HOWTO (R_FRV_FUNCDESC, /* type */ 780 0, /* rightshift */ 781 2, /* size (0 = byte, 1 = short, 2 = long) */ 782 32, /* bitsize */ 783 FALSE, /* pc_relative */ 784 0, /* bitpos */ 785 complain_overflow_bitfield, /* complain_on_overflow */ 786 bfd_elf_generic_reloc, /* special_function */ 787 "R_FRV_FUNCDESC", /* name */ 788 TRUE, /* partial_inplace */ 789 0xffffffff, /* src_mask */ 790 0xffffffff, /* dst_mask */ 791 FALSE); /* pcrel_offset */ 792 793static reloc_howto_type elf32_frv_rel_funcdesc_value_howto = 794 HOWTO (R_FRV_FUNCDESC_VALUE, /* type */ 795 0, /* rightshift */ 796 2, /* size (0 = byte, 1 = short, 2 = long) */ 797 64, /* bitsize */ 798 FALSE, /* pc_relative */ 799 0, /* bitpos */ 800 complain_overflow_bitfield, /* complain_on_overflow */ 801 bfd_elf_generic_reloc, /* special_function */ 802 "R_FRV_FUNCDESC_VALUE", /* name */ 803 TRUE, /* partial_inplace */ 804 0xffffffff, /* src_mask */ 805 0xffffffff, /* dst_mask */ 806 FALSE); /* pcrel_offset */ 807 808static reloc_howto_type elf32_frv_rel_tlsdesc_value_howto = 809 /* A 64-bit TLS descriptor for a symbol. The first word resolves to 810 an entry point, and the second resolves to a special argument. 811 If the symbol turns out to be in static TLS, the entry point is a 812 return instruction, and the special argument is the TLS offset 813 for the symbol. If it's in dynamic TLS, the entry point is a TLS 814 offset resolver, and the special argument is a pointer to a data 815 structure allocated by the dynamic loader, containing the GOT 816 address for the offset resolver, the module id, the offset within 817 the module, and anything else the TLS offset resolver might need 818 to determine the TLS offset for the symbol in the running 819 thread. */ 820 HOWTO (R_FRV_TLSDESC_VALUE, /* type */ 821 0, /* rightshift */ 822 2, /* size (0 = byte, 1 = short, 2 = long) */ 823 64, /* bitsize */ 824 FALSE, /* pc_relative */ 825 0, /* bitpos */ 826 complain_overflow_bitfield, /* complain_on_overflow */ 827 bfd_elf_generic_reloc, /* special_function */ 828 "R_FRV_TLSDESC_VALUE", /* name */ 829 TRUE, /* partial_inplace */ 830 0xffffffff, /* src_mask */ 831 0xffffffff, /* dst_mask */ 832 FALSE); /* pcrel_offset */ 833 834static reloc_howto_type elf32_frv_rel_tlsoff_howto = 835 /* The 32-bit offset from the thread pointer (not the module base 836 address) to a thread-local symbol. */ 837 HOWTO (R_FRV_TLSOFF, /* type */ 838 0, /* rightshift */ 839 2, /* size (0 = byte, 1 = short, 2 = long) */ 840 32, /* bitsize */ 841 FALSE, /* pc_relative */ 842 0, /* bitpos */ 843 complain_overflow_bitfield, /* complain_on_overflow */ 844 bfd_elf_generic_reloc, /* special_function */ 845 "R_FRV_TLSOFF", /* name */ 846 TRUE, /* partial_inplace */ 847 0xffffffff, /* src_mask */ 848 0xffffffff, /* dst_mask */ 849 FALSE); /* pcrel_offset */ 850 851 852 853extern const bfd_target bfd_elf32_frvfdpic_vec; 854#define IS_FDPIC(bfd) ((bfd)->xvec == &bfd_elf32_frvfdpic_vec) 855 856/* An extension of the elf hash table data structure, containing some 857 additional FRV-specific data. */ 858struct frvfdpic_elf_link_hash_table 859{ 860 struct elf_link_hash_table elf; 861 862 /* A pointer to the .got section. */ 863 asection *sgot; 864 /* A pointer to the .rel.got section. */ 865 asection *sgotrel; 866 /* A pointer to the .rofixup section. */ 867 asection *sgotfixup; 868 /* A pointer to the .plt section. */ 869 asection *splt; 870 /* A pointer to the .rel.plt section. */ 871 asection *spltrel; 872 /* GOT base offset. */ 873 bfd_vma got0; 874 /* Location of the first non-lazy PLT entry, i.e., the number of 875 bytes taken by lazy PLT entries. If locally-bound TLS 876 descriptors require a ret instruction, it will be placed at this 877 offset. */ 878 bfd_vma plt0; 879 /* A hash table holding information about which symbols were 880 referenced with which PIC-related relocations. */ 881 struct htab *relocs_info; 882 /* Summary reloc information collected by 883 _frvfdpic_count_got_plt_entries. */ 884 struct _frvfdpic_dynamic_got_info *g; 885}; 886 887/* Get the FRV ELF linker hash table from a link_info structure. */ 888 889#define frvfdpic_hash_table(info) \ 890 ((struct frvfdpic_elf_link_hash_table *) ((info)->hash)) 891 892#define frvfdpic_got_section(info) \ 893 (frvfdpic_hash_table (info)->sgot) 894#define frvfdpic_gotrel_section(info) \ 895 (frvfdpic_hash_table (info)->sgotrel) 896#define frvfdpic_gotfixup_section(info) \ 897 (frvfdpic_hash_table (info)->sgotfixup) 898#define frvfdpic_plt_section(info) \ 899 (frvfdpic_hash_table (info)->splt) 900#define frvfdpic_pltrel_section(info) \ 901 (frvfdpic_hash_table (info)->spltrel) 902#define frvfdpic_relocs_info(info) \ 903 (frvfdpic_hash_table (info)->relocs_info) 904#define frvfdpic_got_initial_offset(info) \ 905 (frvfdpic_hash_table (info)->got0) 906#define frvfdpic_plt_initial_offset(info) \ 907 (frvfdpic_hash_table (info)->plt0) 908#define frvfdpic_dynamic_got_plt_info(info) \ 909 (frvfdpic_hash_table (info)->g) 910 911/* Currently it's the same, but if some day we have a reason to change 912 it, we'd better be using a different macro. 913 914 FIXME: if there's any TLS PLT entry that uses local-exec or 915 initial-exec models, we could use the ret at the end of any of them 916 instead of adding one more. */ 917#define frvfdpic_plt_tls_ret_offset(info) \ 918 (frvfdpic_plt_initial_offset (info)) 919 920/* The name of the dynamic interpreter. This is put in the .interp 921 section. */ 922 923#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" 924 925#define DEFAULT_STACK_SIZE 0x20000 926 927/* This structure is used to collect the number of entries present in 928 each addressable range of the got. */ 929struct _frvfdpic_dynamic_got_info 930{ 931 /* Several bits of information about the current link. */ 932 struct bfd_link_info *info; 933 /* Total GOT size needed for GOT entries within the 12-, 16- or 32-bit 934 ranges. */ 935 bfd_vma got12, gotlos, gothilo; 936 /* Total GOT size needed for function descriptor entries within the 12-, 937 16- or 32-bit ranges. */ 938 bfd_vma fd12, fdlos, fdhilo; 939 /* Total GOT size needed by function descriptor entries referenced 940 in PLT entries, that would be profitable to place in offsets 941 close to the PIC register. */ 942 bfd_vma fdplt; 943 /* Total PLT size needed by lazy PLT entries. */ 944 bfd_vma lzplt; 945 /* Total GOT size needed for TLS descriptor entries within the 12-, 946 16- or 32-bit ranges. */ 947 bfd_vma tlsd12, tlsdlos, tlsdhilo; 948 /* Total GOT size needed by TLS descriptors referenced in PLT 949 entries, that would be profitable to place in offers close to the 950 PIC register. */ 951 bfd_vma tlsdplt; 952 /* Total PLT size needed by TLS lazy PLT entries. */ 953 bfd_vma tlslzplt; 954 /* Number of relocations carried over from input object files. */ 955 unsigned long relocs; 956 /* Number of fixups introduced by relocations in input object files. */ 957 unsigned long fixups; 958 /* The number of fixups that reference the ret instruction added to 959 the PLT for locally-resolved TLS descriptors. */ 960 unsigned long tls_ret_refs; 961}; 962 963/* This structure is used to assign offsets to got entries, function 964 descriptors, plt entries and lazy plt entries. */ 965 966struct _frvfdpic_dynamic_got_plt_info 967{ 968 /* Summary information collected with _frvfdpic_count_got_plt_entries. */ 969 struct _frvfdpic_dynamic_got_info g; 970 971 /* For each addressable range, we record a MAX (positive) and MIN 972 (negative) value. CUR is used to assign got entries, and it's 973 incremented from an initial positive value to MAX, then from MIN 974 to FDCUR (unless FDCUR wraps around first). FDCUR is used to 975 assign function descriptors, and it's decreased from an initial 976 non-positive value to MIN, then from MAX down to CUR (unless CUR 977 wraps around first). All of MIN, MAX, CUR and FDCUR always point 978 to even words. ODD, if non-zero, indicates an odd word to be 979 used for the next got entry, otherwise CUR is used and 980 incremented by a pair of words, wrapping around when it reaches 981 MAX. FDCUR is decremented (and wrapped) before the next function 982 descriptor is chosen. FDPLT indicates the number of remaining 983 slots that can be used for function descriptors used only by PLT 984 entries. 985 986 TMAX, TMIN and TCUR are used to assign TLS descriptors. TCUR 987 starts as MAX, and grows up to TMAX, then wraps around to TMIN 988 and grows up to MIN. TLSDPLT indicates the number of remaining 989 slots that can be used for TLS descriptors used only by TLS PLT 990 entries. */ 991 struct _frvfdpic_dynamic_got_alloc_data 992 { 993 bfd_signed_vma max, cur, odd, fdcur, min; 994 bfd_signed_vma tmax, tcur, tmin; 995 bfd_vma fdplt, tlsdplt; 996 } got12, gotlos, gothilo; 997}; 998 999/* Create an FRV ELF linker hash table. */ 1000 1001static struct bfd_link_hash_table * 1002frvfdpic_elf_link_hash_table_create (bfd *abfd) 1003{ 1004 struct frvfdpic_elf_link_hash_table *ret; 1005 bfd_size_type amt = sizeof (struct frvfdpic_elf_link_hash_table); 1006 1007 ret = bfd_zalloc (abfd, amt); 1008 if (ret == NULL) 1009 return NULL; 1010 1011 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, 1012 _bfd_elf_link_hash_newfunc, 1013 sizeof (struct elf_link_hash_entry))) 1014 { 1015 free (ret); 1016 return NULL; 1017 } 1018 1019 return &ret->elf.root; 1020} 1021 1022/* Decide whether a reference to a symbol can be resolved locally or 1023 not. If the symbol is protected, we want the local address, but 1024 its function descriptor must be assigned by the dynamic linker. */ 1025#define FRVFDPIC_SYM_LOCAL(INFO, H) \ 1026 (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \ 1027 || ! elf_hash_table (INFO)->dynamic_sections_created) 1028#define FRVFDPIC_FUNCDESC_LOCAL(INFO, H) \ 1029 ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created) 1030 1031/* This structure collects information on what kind of GOT, PLT or 1032 function descriptors are required by relocations that reference a 1033 certain symbol. */ 1034struct frvfdpic_relocs_info 1035{ 1036 /* The index of the symbol, as stored in the relocation r_info, if 1037 we have a local symbol; -1 otherwise. */ 1038 long symndx; 1039 union 1040 { 1041 /* The input bfd in which the symbol is defined, if it's a local 1042 symbol. */ 1043 bfd *abfd; 1044 /* If symndx == -1, the hash table entry corresponding to a global 1045 symbol (even if it turns out to bind locally, in which case it 1046 should ideally be replaced with section's symndx + addend). */ 1047 struct elf_link_hash_entry *h; 1048 } d; 1049 /* The addend of the relocation that references the symbol. */ 1050 bfd_vma addend; 1051 1052 /* The fields above are used to identify an entry. The fields below 1053 contain information on how an entry is used and, later on, which 1054 locations it was assigned. */ 1055 /* The following 3 fields record whether the symbol+addend above was 1056 ever referenced with a GOT relocation. The 12 suffix indicates a 1057 GOT12 relocation; los is used for GOTLO relocations that are not 1058 matched by a GOTHI relocation; hilo is used for GOTLO/GOTHI 1059 pairs. */ 1060 unsigned got12:1; 1061 unsigned gotlos:1; 1062 unsigned gothilo:1; 1063 /* Whether a FUNCDESC relocation references symbol+addend. */ 1064 unsigned fd:1; 1065 /* Whether a FUNCDESC_GOT relocation references symbol+addend. */ 1066 unsigned fdgot12:1; 1067 unsigned fdgotlos:1; 1068 unsigned fdgothilo:1; 1069 /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */ 1070 unsigned fdgoff12:1; 1071 unsigned fdgofflos:1; 1072 unsigned fdgoffhilo:1; 1073 /* Whether a GETTLSOFF relocation references symbol+addend. */ 1074 unsigned tlsplt:1; 1075 /* FIXME: we should probably add tlspltdesc, tlspltoff and 1076 tlspltimm, to tell what kind of TLS PLT entry we're generating. 1077 We might instead just pre-compute flags telling whether the 1078 object is suitable for local exec, initial exec or general 1079 dynamic addressing, and use that all over the place. We could 1080 also try to do a better job of merging TLSOFF and TLSDESC entries 1081 in main executables, but perhaps we can get rid of TLSDESC 1082 entirely in them instead. */ 1083 /* Whether a GOTTLSDESC relocation references symbol+addend. */ 1084 unsigned tlsdesc12:1; 1085 unsigned tlsdesclos:1; 1086 unsigned tlsdeschilo:1; 1087 /* Whether a GOTTLSOFF relocation references symbol+addend. */ 1088 unsigned tlsoff12:1; 1089 unsigned tlsofflos:1; 1090 unsigned tlsoffhilo:1; 1091 /* Whether symbol+addend is referenced with GOTOFF12, GOTOFFLO or 1092 GOTOFFHI relocations. The addend doesn't really matter, since we 1093 envision that this will only be used to check whether the symbol 1094 is mapped to the same segment as the got. */ 1095 unsigned gotoff:1; 1096 /* Whether symbol+addend is referenced by a LABEL24 relocation. */ 1097 unsigned call:1; 1098 /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE 1099 relocation. */ 1100 unsigned sym:1; 1101 /* Whether we need a PLT entry for a symbol. Should be implied by 1102 something like: 1103 (call && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h)) */ 1104 unsigned plt:1; 1105 /* Whether a function descriptor should be created in this link unit 1106 for symbol+addend. Should be implied by something like: 1107 (plt || fdgotoff12 || fdgotofflos || fdgotofflohi 1108 || ((fd || fdgot12 || fdgotlos || fdgothilo) 1109 && (symndx != -1 || FRVFDPIC_FUNCDESC_LOCAL (info, d.h)))) */ 1110 unsigned privfd:1; 1111 /* Whether a lazy PLT entry is needed for this symbol+addend. 1112 Should be implied by something like: 1113 (privfd && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h) 1114 && ! (info->flags & DF_BIND_NOW)) */ 1115 unsigned lazyplt:1; 1116 /* Whether we've already emitted GOT relocations and PLT entries as 1117 needed for this symbol. */ 1118 unsigned done:1; 1119 1120 /* The number of R_FRV_32, R_FRV_FUNCDESC, R_FRV_FUNCDESC_VALUE and 1121 R_FRV_TLSDESC_VALUE, R_FRV_TLSOFF relocations referencing 1122 symbol+addend. */ 1123 unsigned relocs32, relocsfd, relocsfdv, relocstlsd, relocstlsoff; 1124 1125 /* The number of .rofixups entries and dynamic relocations allocated 1126 for this symbol, minus any that might have already been used. */ 1127 unsigned fixups, dynrelocs; 1128 1129 /* The offsets of the GOT entries assigned to symbol+addend, to the 1130 function descriptor's address, and to a function descriptor, 1131 respectively. Should be zero if unassigned. The offsets are 1132 counted from the value that will be assigned to the PIC register, 1133 not from the beginning of the .got section. */ 1134 bfd_signed_vma got_entry, fdgot_entry, fd_entry; 1135 /* The offsets of the PLT entries assigned to symbol+addend, 1136 non-lazy and lazy, respectively. If unassigned, should be 1137 (bfd_vma)-1. */ 1138 bfd_vma plt_entry, lzplt_entry; 1139 /* The offsets of the GOT entries for TLS offset and TLS descriptor. */ 1140 bfd_signed_vma tlsoff_entry, tlsdesc_entry; 1141 /* The offset of the TLS offset PLT entry. */ 1142 bfd_vma tlsplt_entry; 1143}; 1144 1145/* Compute a hash with the key fields of an frvfdpic_relocs_info entry. */ 1146static hashval_t 1147frvfdpic_relocs_info_hash (const void *entry_) 1148{ 1149 const struct frvfdpic_relocs_info *entry = entry_; 1150 1151 return (entry->symndx == -1 1152 ? (long) entry->d.h->root.root.hash 1153 : entry->symndx + (long) entry->d.abfd->id * 257) + entry->addend; 1154} 1155 1156/* Test whether the key fields of two frvfdpic_relocs_info entries are 1157 identical. */ 1158static int 1159frvfdpic_relocs_info_eq (const void *entry1, const void *entry2) 1160{ 1161 const struct frvfdpic_relocs_info *e1 = entry1; 1162 const struct frvfdpic_relocs_info *e2 = entry2; 1163 1164 return e1->symndx == e2->symndx && e1->addend == e2->addend 1165 && (e1->symndx == -1 ? e1->d.h == e2->d.h : e1->d.abfd == e2->d.abfd); 1166} 1167 1168/* Find or create an entry in a hash table HT that matches the key 1169 fields of the given ENTRY. If it's not found, memory for a new 1170 entry is allocated in ABFD's obstack. */ 1171static struct frvfdpic_relocs_info * 1172frvfdpic_relocs_info_find (struct htab *ht, 1173 bfd *abfd, 1174 const struct frvfdpic_relocs_info *entry, 1175 enum insert_option insert) 1176{ 1177 struct frvfdpic_relocs_info **loc = 1178 (struct frvfdpic_relocs_info **) htab_find_slot (ht, entry, insert); 1179 1180 if (! loc) 1181 return NULL; 1182 1183 if (*loc) 1184 return *loc; 1185 1186 *loc = bfd_zalloc (abfd, sizeof (**loc)); 1187 1188 if (! *loc) 1189 return *loc; 1190 1191 (*loc)->symndx = entry->symndx; 1192 (*loc)->d = entry->d; 1193 (*loc)->addend = entry->addend; 1194 (*loc)->plt_entry = (bfd_vma)-1; 1195 (*loc)->lzplt_entry = (bfd_vma)-1; 1196 (*loc)->tlsplt_entry = (bfd_vma)-1; 1197 1198 return *loc; 1199} 1200 1201/* Obtain the address of the entry in HT associated with H's symbol + 1202 addend, creating a new entry if none existed. ABFD is only used 1203 for memory allocation purposes. */ 1204inline static struct frvfdpic_relocs_info * 1205frvfdpic_relocs_info_for_global (struct htab *ht, 1206 bfd *abfd, 1207 struct elf_link_hash_entry *h, 1208 bfd_vma addend, 1209 enum insert_option insert) 1210{ 1211 struct frvfdpic_relocs_info entry; 1212 1213 entry.symndx = -1; 1214 entry.d.h = h; 1215 entry.addend = addend; 1216 1217 return frvfdpic_relocs_info_find (ht, abfd, &entry, insert); 1218} 1219 1220/* Obtain the address of the entry in HT associated with the SYMNDXth 1221 local symbol of the input bfd ABFD, plus the addend, creating a new 1222 entry if none existed. */ 1223inline static struct frvfdpic_relocs_info * 1224frvfdpic_relocs_info_for_local (struct htab *ht, 1225 bfd *abfd, 1226 long symndx, 1227 bfd_vma addend, 1228 enum insert_option insert) 1229{ 1230 struct frvfdpic_relocs_info entry; 1231 1232 entry.symndx = symndx; 1233 entry.d.abfd = abfd; 1234 entry.addend = addend; 1235 1236 return frvfdpic_relocs_info_find (ht, abfd, &entry, insert); 1237} 1238 1239/* Merge fields set by check_relocs() of two entries that end up being 1240 mapped to the same (presumably global) symbol. */ 1241 1242inline static void 1243frvfdpic_pic_merge_early_relocs_info (struct frvfdpic_relocs_info *e2, 1244 struct frvfdpic_relocs_info const *e1) 1245{ 1246 e2->got12 |= e1->got12; 1247 e2->gotlos |= e1->gotlos; 1248 e2->gothilo |= e1->gothilo; 1249 e2->fd |= e1->fd; 1250 e2->fdgot12 |= e1->fdgot12; 1251 e2->fdgotlos |= e1->fdgotlos; 1252 e2->fdgothilo |= e1->fdgothilo; 1253 e2->fdgoff12 |= e1->fdgoff12; 1254 e2->fdgofflos |= e1->fdgofflos; 1255 e2->fdgoffhilo |= e1->fdgoffhilo; 1256 e2->tlsplt |= e1->tlsplt; 1257 e2->tlsdesc12 |= e1->tlsdesc12; 1258 e2->tlsdesclos |= e1->tlsdesclos; 1259 e2->tlsdeschilo |= e1->tlsdeschilo; 1260 e2->tlsoff12 |= e1->tlsoff12; 1261 e2->tlsofflos |= e1->tlsofflos; 1262 e2->tlsoffhilo |= e1->tlsoffhilo; 1263 e2->gotoff |= e1->gotoff; 1264 e2->call |= e1->call; 1265 e2->sym |= e1->sym; 1266} 1267 1268/* Every block of 65535 lazy PLT entries shares a single call to the 1269 resolver, inserted in the 32768th lazy PLT entry (i.e., entry # 1270 32767, counting from 0). All other lazy PLT entries branch to it 1271 in a single instruction. */ 1272 1273#define FRVFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) 8 * 65535 + 4) 1274#define FRVFDPIC_LZPLT_RESOLV_LOC (8 * 32767) 1275 1276/* Add a dynamic relocation to the SRELOC section. */ 1277 1278inline static bfd_vma 1279_frvfdpic_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset, 1280 int reloc_type, long dynindx, bfd_vma addend, 1281 struct frvfdpic_relocs_info *entry) 1282{ 1283 Elf_Internal_Rela outrel; 1284 bfd_vma reloc_offset; 1285 1286 outrel.r_offset = offset; 1287 outrel.r_info = ELF32_R_INFO (dynindx, reloc_type); 1288 outrel.r_addend = addend; 1289 1290 reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rel); 1291 BFD_ASSERT (reloc_offset < sreloc->size); 1292 bfd_elf32_swap_reloc_out (output_bfd, &outrel, 1293 sreloc->contents + reloc_offset); 1294 sreloc->reloc_count++; 1295 1296 /* If the entry's index is zero, this relocation was probably to a 1297 linkonce section that got discarded. We reserved a dynamic 1298 relocation, but it was for another entry than the one we got at 1299 the time of emitting the relocation. Unfortunately there's no 1300 simple way for us to catch this situation, since the relocation 1301 is cleared right before calling relocate_section, at which point 1302 we no longer know what the relocation used to point to. */ 1303 if (entry->symndx) 1304 { 1305 BFD_ASSERT (entry->dynrelocs > 0); 1306 entry->dynrelocs--; 1307 } 1308 1309 return reloc_offset; 1310} 1311 1312/* Add a fixup to the ROFIXUP section. */ 1313 1314static bfd_vma 1315_frvfdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma offset, 1316 struct frvfdpic_relocs_info *entry) 1317{ 1318 bfd_vma fixup_offset; 1319 1320 if (rofixup->flags & SEC_EXCLUDE) 1321 return -1; 1322 1323 fixup_offset = rofixup->reloc_count * 4; 1324 if (rofixup->contents) 1325 { 1326 BFD_ASSERT (fixup_offset < rofixup->size); 1327 bfd_put_32 (output_bfd, offset, rofixup->contents + fixup_offset); 1328 } 1329 rofixup->reloc_count++; 1330 1331 if (entry && entry->symndx) 1332 { 1333 /* See discussion about symndx == 0 in _frvfdpic_add_dyn_reloc 1334 above. */ 1335 BFD_ASSERT (entry->fixups > 0); 1336 entry->fixups--; 1337 } 1338 1339 return fixup_offset; 1340} 1341 1342/* Find the segment number in which OSEC, and output section, is 1343 located. */ 1344 1345static unsigned 1346_frvfdpic_osec_to_segment (bfd *output_bfd, asection *osec) 1347{ 1348 struct elf_segment_map *m; 1349 Elf_Internal_Phdr *p; 1350 1351 /* Find the segment that contains the output_section. */ 1352 for (m = elf_tdata (output_bfd)->segment_map, 1353 p = elf_tdata (output_bfd)->phdr; 1354 m != NULL; 1355 m = m->next, p++) 1356 { 1357 int i; 1358 1359 for (i = m->count - 1; i >= 0; i--) 1360 if (m->sections[i] == osec) 1361 break; 1362 1363 if (i >= 0) 1364 break; 1365 } 1366 1367 return p - elf_tdata (output_bfd)->phdr; 1368} 1369 1370inline static bfd_boolean 1371_frvfdpic_osec_readonly_p (bfd *output_bfd, asection *osec) 1372{ 1373 unsigned seg = _frvfdpic_osec_to_segment (output_bfd, osec); 1374 1375 return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W); 1376} 1377 1378#define FRVFDPIC_TLS_BIAS (2048 - 16) 1379 1380/* Return the base VMA address which should be subtracted from real addresses 1381 when resolving TLSMOFF relocation. 1382 This is PT_TLS segment p_vaddr, plus the 2048-16 bias. */ 1383 1384static bfd_vma 1385tls_biased_base (struct bfd_link_info *info) 1386{ 1387 /* If tls_sec is NULL, we should have signalled an error already. */ 1388 if (elf_hash_table (info)->tls_sec == NULL) 1389 return FRVFDPIC_TLS_BIAS; 1390 return elf_hash_table (info)->tls_sec->vma + FRVFDPIC_TLS_BIAS; 1391} 1392 1393/* Generate relocations for GOT entries, function descriptors, and 1394 code for PLT and lazy PLT entries. */ 1395 1396inline static bfd_boolean 1397_frvfdpic_emit_got_relocs_plt_entries (struct frvfdpic_relocs_info *entry, 1398 bfd *output_bfd, 1399 struct bfd_link_info *info, 1400 asection *sec, 1401 Elf_Internal_Sym *sym, 1402 bfd_vma addend) 1403 1404{ 1405 bfd_vma fd_lazy_rel_offset = (bfd_vma)-1; 1406 int dynindx = -1; 1407 1408 if (entry->done) 1409 return TRUE; 1410 entry->done = 1; 1411 1412 if (entry->got_entry || entry->fdgot_entry || entry->fd_entry 1413 || entry->tlsoff_entry || entry->tlsdesc_entry) 1414 { 1415 /* If the symbol is dynamic, consider it for dynamic 1416 relocations, otherwise decay to section + offset. */ 1417 if (entry->symndx == -1 && entry->d.h->dynindx != -1) 1418 dynindx = entry->d.h->dynindx; 1419 else 1420 { 1421 if (sec->output_section 1422 && ! bfd_is_abs_section (sec->output_section) 1423 && ! bfd_is_und_section (sec->output_section)) 1424 dynindx = elf_section_data (sec->output_section)->dynindx; 1425 else 1426 dynindx = 0; 1427 } 1428 } 1429 1430 /* Generate relocation for GOT entry pointing to the symbol. */ 1431 if (entry->got_entry) 1432 { 1433 int idx = dynindx; 1434 bfd_vma ad = addend; 1435 1436 /* If the symbol is dynamic but binds locally, use 1437 section+offset. */ 1438 if (sec && (entry->symndx != -1 1439 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1440 { 1441 if (entry->symndx == -1) 1442 ad += entry->d.h->root.u.def.value; 1443 else 1444 ad += sym->st_value; 1445 ad += sec->output_offset; 1446 if (sec->output_section && elf_section_data (sec->output_section)) 1447 idx = elf_section_data (sec->output_section)->dynindx; 1448 else 1449 idx = 0; 1450 } 1451 1452 /* If we're linking an executable at a fixed address, we can 1453 omit the dynamic relocation as long as the symbol is local to 1454 this module. */ 1455 if (info->executable && !info->pie 1456 && (entry->symndx != -1 1457 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1458 { 1459 if (sec) 1460 ad += sec->output_section->vma; 1461 if (entry->symndx != -1 1462 || entry->d.h->root.type != bfd_link_hash_undefweak) 1463 _frvfdpic_add_rofixup (output_bfd, 1464 frvfdpic_gotfixup_section (info), 1465 frvfdpic_got_section (info)->output_section 1466 ->vma 1467 + frvfdpic_got_section (info)->output_offset 1468 + frvfdpic_got_initial_offset (info) 1469 + entry->got_entry, entry); 1470 } 1471 else 1472 _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), 1473 _bfd_elf_section_offset 1474 (output_bfd, info, 1475 frvfdpic_got_section (info), 1476 frvfdpic_got_initial_offset (info) 1477 + entry->got_entry) 1478 + frvfdpic_got_section (info) 1479 ->output_section->vma 1480 + frvfdpic_got_section (info)->output_offset, 1481 R_FRV_32, idx, ad, entry); 1482 1483 bfd_put_32 (output_bfd, ad, 1484 frvfdpic_got_section (info)->contents 1485 + frvfdpic_got_initial_offset (info) 1486 + entry->got_entry); 1487 } 1488 1489 /* Generate relocation for GOT entry pointing to a canonical 1490 function descriptor. */ 1491 if (entry->fdgot_entry) 1492 { 1493 int reloc, idx; 1494 bfd_vma ad = 0; 1495 1496 if (! (entry->symndx == -1 1497 && entry->d.h->root.type == bfd_link_hash_undefweak 1498 && FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1499 { 1500 /* If the symbol is dynamic and there may be dynamic symbol 1501 resolution because we are, or are linked with, a shared 1502 library, emit a FUNCDESC relocation such that the dynamic 1503 linker will allocate the function descriptor. If the 1504 symbol needs a non-local function descriptor but binds 1505 locally (e.g., its visibility is protected, emit a 1506 dynamic relocation decayed to section+offset. */ 1507 if (entry->symndx == -1 1508 && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h) 1509 && FRVFDPIC_SYM_LOCAL (info, entry->d.h) 1510 && !(info->executable && !info->pie)) 1511 { 1512 reloc = R_FRV_FUNCDESC; 1513 idx = elf_section_data (entry->d.h->root.u.def.section 1514 ->output_section)->dynindx; 1515 ad = entry->d.h->root.u.def.section->output_offset 1516 + entry->d.h->root.u.def.value; 1517 } 1518 else if (entry->symndx == -1 1519 && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h)) 1520 { 1521 reloc = R_FRV_FUNCDESC; 1522 idx = dynindx; 1523 ad = addend; 1524 if (ad) 1525 { 1526 (*info->callbacks->reloc_dangerous) 1527 (info, _("relocation requires zero addend"), 1528 elf_hash_table (info)->dynobj, 1529 frvfdpic_got_section (info), 1530 entry->fdgot_entry); 1531 return FALSE; 1532 } 1533 } 1534 else 1535 { 1536 /* Otherwise, we know we have a private function descriptor, 1537 so reference it directly. */ 1538 if (elf_hash_table (info)->dynamic_sections_created) 1539 BFD_ASSERT (entry->privfd); 1540 reloc = R_FRV_32; 1541 idx = elf_section_data (frvfdpic_got_section (info) 1542 ->output_section)->dynindx; 1543 ad = frvfdpic_got_section (info)->output_offset 1544 + frvfdpic_got_initial_offset (info) + entry->fd_entry; 1545 } 1546 1547 /* If there is room for dynamic symbol resolution, emit the 1548 dynamic relocation. However, if we're linking an 1549 executable at a fixed location, we won't have emitted a 1550 dynamic symbol entry for the got section, so idx will be 1551 zero, which means we can and should compute the address 1552 of the private descriptor ourselves. */ 1553 if (info->executable && !info->pie 1554 && (entry->symndx != -1 1555 || FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h))) 1556 { 1557 ad += frvfdpic_got_section (info)->output_section->vma; 1558 _frvfdpic_add_rofixup (output_bfd, 1559 frvfdpic_gotfixup_section (info), 1560 frvfdpic_got_section (info) 1561 ->output_section->vma 1562 + frvfdpic_got_section (info) 1563 ->output_offset 1564 + frvfdpic_got_initial_offset (info) 1565 + entry->fdgot_entry, entry); 1566 } 1567 else 1568 _frvfdpic_add_dyn_reloc (output_bfd, 1569 frvfdpic_gotrel_section (info), 1570 _bfd_elf_section_offset 1571 (output_bfd, info, 1572 frvfdpic_got_section (info), 1573 frvfdpic_got_initial_offset (info) 1574 + entry->fdgot_entry) 1575 + frvfdpic_got_section (info) 1576 ->output_section->vma 1577 + frvfdpic_got_section (info) 1578 ->output_offset, 1579 reloc, idx, ad, entry); 1580 } 1581 1582 bfd_put_32 (output_bfd, ad, 1583 frvfdpic_got_section (info)->contents 1584 + frvfdpic_got_initial_offset (info) 1585 + entry->fdgot_entry); 1586 } 1587 1588 /* Generate relocation to fill in a private function descriptor in 1589 the GOT. */ 1590 if (entry->fd_entry) 1591 { 1592 int idx = dynindx; 1593 bfd_vma ad = addend; 1594 bfd_vma ofst; 1595 long lowword, highword; 1596 1597 /* If the symbol is dynamic but binds locally, use 1598 section+offset. */ 1599 if (sec && (entry->symndx != -1 1600 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1601 { 1602 if (entry->symndx == -1) 1603 ad += entry->d.h->root.u.def.value; 1604 else 1605 ad += sym->st_value; 1606 ad += sec->output_offset; 1607 if (sec->output_section && elf_section_data (sec->output_section)) 1608 idx = elf_section_data (sec->output_section)->dynindx; 1609 else 1610 idx = 0; 1611 } 1612 1613 /* If we're linking an executable at a fixed address, we can 1614 omit the dynamic relocation as long as the symbol is local to 1615 this module. */ 1616 if (info->executable && !info->pie 1617 && (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1618 { 1619 if (sec) 1620 ad += sec->output_section->vma; 1621 ofst = 0; 1622 if (entry->symndx != -1 1623 || entry->d.h->root.type != bfd_link_hash_undefweak) 1624 { 1625 _frvfdpic_add_rofixup (output_bfd, 1626 frvfdpic_gotfixup_section (info), 1627 frvfdpic_got_section (info) 1628 ->output_section->vma 1629 + frvfdpic_got_section (info) 1630 ->output_offset 1631 + frvfdpic_got_initial_offset (info) 1632 + entry->fd_entry, entry); 1633 _frvfdpic_add_rofixup (output_bfd, 1634 frvfdpic_gotfixup_section (info), 1635 frvfdpic_got_section (info) 1636 ->output_section->vma 1637 + frvfdpic_got_section (info) 1638 ->output_offset 1639 + frvfdpic_got_initial_offset (info) 1640 + entry->fd_entry + 4, entry); 1641 } 1642 } 1643 else 1644 { 1645 ofst = 1646 _frvfdpic_add_dyn_reloc (output_bfd, 1647 entry->lazyplt 1648 ? frvfdpic_pltrel_section (info) 1649 : frvfdpic_gotrel_section (info), 1650 _bfd_elf_section_offset 1651 (output_bfd, info, 1652 frvfdpic_got_section (info), 1653 frvfdpic_got_initial_offset (info) 1654 + entry->fd_entry) 1655 + frvfdpic_got_section (info) 1656 ->output_section->vma 1657 + frvfdpic_got_section (info) 1658 ->output_offset, 1659 R_FRV_FUNCDESC_VALUE, idx, ad, entry); 1660 } 1661 1662 /* If we've omitted the dynamic relocation, just emit the fixed 1663 addresses of the symbol and of the local GOT base offset. */ 1664 if (info->executable && !info->pie && sec && sec->output_section) 1665 { 1666 lowword = ad; 1667 highword = frvfdpic_got_section (info)->output_section->vma 1668 + frvfdpic_got_section (info)->output_offset 1669 + frvfdpic_got_initial_offset (info); 1670 } 1671 else if (entry->lazyplt) 1672 { 1673 if (ad) 1674 { 1675 (*info->callbacks->reloc_dangerous) 1676 (info, _("relocation requires zero addend"), 1677 elf_hash_table (info)->dynobj, 1678 frvfdpic_got_section (info), 1679 entry->fd_entry); 1680 return FALSE; 1681 } 1682 1683 fd_lazy_rel_offset = ofst; 1684 1685 /* A function descriptor used for lazy or local resolving is 1686 initialized such that its high word contains the output 1687 section index in which the PLT entries are located, and 1688 the low word contains the address of the lazy PLT entry 1689 entry point, that must be within the memory region 1690 assigned to that section. */ 1691 lowword = entry->lzplt_entry + 4 1692 + frvfdpic_plt_section (info)->output_offset 1693 + frvfdpic_plt_section (info)->output_section->vma; 1694 highword = _frvfdpic_osec_to_segment 1695 (output_bfd, frvfdpic_plt_section (info)->output_section); 1696 } 1697 else 1698 { 1699 /* A function descriptor for a local function gets the index 1700 of the section. For a non-local function, it's 1701 disregarded. */ 1702 lowword = ad; 1703 if (entry->symndx == -1 && entry->d.h->dynindx != -1 1704 && entry->d.h->dynindx == idx) 1705 highword = 0; 1706 else 1707 highword = _frvfdpic_osec_to_segment 1708 (output_bfd, sec->output_section); 1709 } 1710 1711 bfd_put_32 (output_bfd, lowword, 1712 frvfdpic_got_section (info)->contents 1713 + frvfdpic_got_initial_offset (info) 1714 + entry->fd_entry); 1715 bfd_put_32 (output_bfd, highword, 1716 frvfdpic_got_section (info)->contents 1717 + frvfdpic_got_initial_offset (info) 1718 + entry->fd_entry + 4); 1719 } 1720 1721 /* Generate code for the PLT entry. */ 1722 if (entry->plt_entry != (bfd_vma) -1) 1723 { 1724 bfd_byte *plt_code = frvfdpic_plt_section (info)->contents 1725 + entry->plt_entry; 1726 1727 BFD_ASSERT (entry->fd_entry); 1728 1729 /* Figure out what kind of PLT entry we need, depending on the 1730 location of the function descriptor within the GOT. */ 1731 if (entry->fd_entry >= -(1 << (12 - 1)) 1732 && entry->fd_entry < (1 << (12 - 1))) 1733 { 1734 /* lddi @(gr15, fd_entry), gr14 */ 1735 bfd_put_32 (output_bfd, 1736 0x9cccf000 | (entry->fd_entry & ((1 << 12) - 1)), 1737 plt_code); 1738 plt_code += 4; 1739 } 1740 else 1741 { 1742 if (entry->fd_entry >= -(1 << (16 - 1)) 1743 && entry->fd_entry < (1 << (16 - 1))) 1744 { 1745 /* setlos lo(fd_entry), gr14 */ 1746 bfd_put_32 (output_bfd, 1747 0x9cfc0000 1748 | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)), 1749 plt_code); 1750 plt_code += 4; 1751 } 1752 else 1753 { 1754 /* sethi.p hi(fd_entry), gr14 1755 setlo lo(fd_entry), gr14 */ 1756 bfd_put_32 (output_bfd, 1757 0x1cf80000 1758 | ((entry->fd_entry >> 16) 1759 & (((bfd_vma)1 << 16) - 1)), 1760 plt_code); 1761 plt_code += 4; 1762 bfd_put_32 (output_bfd, 1763 0x9cf40000 1764 | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)), 1765 plt_code); 1766 plt_code += 4; 1767 } 1768 /* ldd @(gr14,gr15),gr14 */ 1769 bfd_put_32 (output_bfd, 0x9c08e14f, plt_code); 1770 plt_code += 4; 1771 } 1772 /* jmpl @(gr14,gr0) */ 1773 bfd_put_32 (output_bfd, 0x8030e000, plt_code); 1774 } 1775 1776 /* Generate code for the lazy PLT entry. */ 1777 if (entry->lzplt_entry != (bfd_vma) -1) 1778 { 1779 bfd_byte *lzplt_code = frvfdpic_plt_section (info)->contents 1780 + entry->lzplt_entry; 1781 bfd_vma resolverStub_addr; 1782 1783 bfd_put_32 (output_bfd, fd_lazy_rel_offset, lzplt_code); 1784 lzplt_code += 4; 1785 1786 resolverStub_addr = entry->lzplt_entry / FRVFDPIC_LZPLT_BLOCK_SIZE 1787 * FRVFDPIC_LZPLT_BLOCK_SIZE + FRVFDPIC_LZPLT_RESOLV_LOC; 1788 if (resolverStub_addr >= frvfdpic_plt_initial_offset (info)) 1789 resolverStub_addr = frvfdpic_plt_initial_offset (info) - 12; 1790 1791 if (entry->lzplt_entry == resolverStub_addr) 1792 { 1793 /* This is a lazy PLT entry that includes a resolver call. */ 1794 /* ldd @(gr15,gr0), gr4 1795 jmpl @(gr4,gr0) */ 1796 bfd_put_32 (output_bfd, 0x8808f140, lzplt_code); 1797 bfd_put_32 (output_bfd, 0x80304000, lzplt_code + 4); 1798 } 1799 else 1800 { 1801 /* bra resolverStub */ 1802 bfd_put_32 (output_bfd, 1803 0xc01a0000 1804 | (((resolverStub_addr - entry->lzplt_entry) 1805 / 4) & (((bfd_vma)1 << 16) - 1)), 1806 lzplt_code); 1807 } 1808 } 1809 1810 /* Generate relocation for GOT entry holding the TLS offset. */ 1811 if (entry->tlsoff_entry) 1812 { 1813 int idx = dynindx; 1814 bfd_vma ad = addend; 1815 1816 if (entry->symndx != -1 1817 || FRVFDPIC_SYM_LOCAL (info, entry->d.h)) 1818 { 1819 /* If the symbol is dynamic but binds locally, use 1820 section+offset. */ 1821 if (sec) 1822 { 1823 if (entry->symndx == -1) 1824 ad += entry->d.h->root.u.def.value; 1825 else 1826 ad += sym->st_value; 1827 ad += sec->output_offset; 1828 if (sec->output_section 1829 && elf_section_data (sec->output_section)) 1830 idx = elf_section_data (sec->output_section)->dynindx; 1831 else 1832 idx = 0; 1833 } 1834 } 1835 1836 /* *ABS*+addend is special for TLS relocations, use only the 1837 addend. */ 1838 if (info->executable 1839 && idx == 0 1840 && (bfd_is_abs_section (sec) 1841 || bfd_is_und_section (sec))) 1842 ; 1843 /* If we're linking an executable, we can entirely omit the 1844 dynamic relocation if the symbol is local to this module. */ 1845 else if (info->executable 1846 && (entry->symndx != -1 1847 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1848 { 1849 if (sec) 1850 ad += sec->output_section->vma - tls_biased_base (info); 1851 } 1852 else 1853 { 1854 if (idx == 0 1855 && (bfd_is_abs_section (sec) 1856 || bfd_is_und_section (sec))) 1857 { 1858 if (! elf_hash_table (info)->tls_sec) 1859 { 1860 (*info->callbacks->undefined_symbol) 1861 (info, "TLS section", elf_hash_table (info)->dynobj, 1862 frvfdpic_got_section (info), entry->tlsoff_entry, TRUE); 1863 return FALSE; 1864 } 1865 idx = elf_section_data (elf_hash_table (info)->tls_sec)->dynindx; 1866 ad += FRVFDPIC_TLS_BIAS; 1867 } 1868 _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), 1869 _bfd_elf_section_offset 1870 (output_bfd, info, 1871 frvfdpic_got_section (info), 1872 frvfdpic_got_initial_offset (info) 1873 + entry->tlsoff_entry) 1874 + frvfdpic_got_section (info) 1875 ->output_section->vma 1876 + frvfdpic_got_section (info) 1877 ->output_offset, 1878 R_FRV_TLSOFF, idx, ad, entry); 1879 } 1880 1881 bfd_put_32 (output_bfd, ad, 1882 frvfdpic_got_section (info)->contents 1883 + frvfdpic_got_initial_offset (info) 1884 + entry->tlsoff_entry); 1885 } 1886 1887 if (entry->tlsdesc_entry) 1888 { 1889 int idx = dynindx; 1890 bfd_vma ad = addend; 1891 1892 /* If the symbol is dynamic but binds locally, use 1893 section+offset. */ 1894 if (sec && (entry->symndx != -1 1895 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1896 { 1897 if (entry->symndx == -1) 1898 ad += entry->d.h->root.u.def.value; 1899 else 1900 ad += sym->st_value; 1901 ad += sec->output_offset; 1902 if (sec->output_section && elf_section_data (sec->output_section)) 1903 idx = elf_section_data (sec->output_section)->dynindx; 1904 else 1905 idx = 0; 1906 } 1907 1908 /* If we didn't set up a TLS offset entry, but we're linking an 1909 executable and the symbol binds locally, we can use the 1910 module offset in the TLS descriptor in relaxations. */ 1911 if (info->executable && ! entry->tlsoff_entry) 1912 entry->tlsoff_entry = entry->tlsdesc_entry + 4; 1913 1914 if (info->executable && !info->pie 1915 && ((idx == 0 1916 && (bfd_is_abs_section (sec) 1917 || bfd_is_und_section (sec))) 1918 || entry->symndx != -1 1919 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1920 { 1921 /* *ABS*+addend is special for TLS relocations, use only the 1922 addend for the TLS offset, and take the module id as 1923 0. */ 1924 if (idx == 0 1925 && (bfd_is_abs_section (sec) 1926 || bfd_is_und_section (sec))) 1927 ; 1928 /* For other TLS symbols that bind locally, add the section 1929 TLS offset to the addend. */ 1930 else if (sec) 1931 ad += sec->output_section->vma - tls_biased_base (info); 1932 1933 bfd_put_32 (output_bfd, 1934 frvfdpic_plt_section (info)->output_section->vma 1935 + frvfdpic_plt_section (info)->output_offset 1936 + frvfdpic_plt_tls_ret_offset (info), 1937 frvfdpic_got_section (info)->contents 1938 + frvfdpic_got_initial_offset (info) 1939 + entry->tlsdesc_entry); 1940 1941 _frvfdpic_add_rofixup (output_bfd, 1942 frvfdpic_gotfixup_section (info), 1943 frvfdpic_got_section (info) 1944 ->output_section->vma 1945 + frvfdpic_got_section (info) 1946 ->output_offset 1947 + frvfdpic_got_initial_offset (info) 1948 + entry->tlsdesc_entry, entry); 1949 1950 BFD_ASSERT (frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs); 1951 1952 /* We've used one of the reserved fixups, so discount it so 1953 that we can check at the end that we've used them 1954 all. */ 1955 frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs--; 1956 1957 /* While at that, make sure the ret instruction makes to the 1958 right location in the PLT. We could do it only when we 1959 got to 0, but since the check at the end will only print 1960 a warning, make sure we have the ret in place in case the 1961 warning is missed. */ 1962 bfd_put_32 (output_bfd, 0xc03a4000, 1963 frvfdpic_plt_section (info)->contents 1964 + frvfdpic_plt_tls_ret_offset (info)); 1965 } 1966 else 1967 { 1968 if (idx == 0 1969 && (bfd_is_abs_section (sec) 1970 || bfd_is_und_section (sec))) 1971 { 1972 if (! elf_hash_table (info)->tls_sec) 1973 { 1974 (*info->callbacks->undefined_symbol) 1975 (info, "TLS section", elf_hash_table (info)->dynobj, 1976 frvfdpic_got_section (info), entry->tlsdesc_entry, TRUE); 1977 return FALSE; 1978 } 1979 idx = elf_section_data (elf_hash_table (info)->tls_sec)->dynindx; 1980 ad += FRVFDPIC_TLS_BIAS; 1981 } 1982 1983 _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), 1984 _bfd_elf_section_offset 1985 (output_bfd, info, 1986 frvfdpic_got_section (info), 1987 frvfdpic_got_initial_offset (info) 1988 + entry->tlsdesc_entry) 1989 + frvfdpic_got_section (info) 1990 ->output_section->vma 1991 + frvfdpic_got_section (info) 1992 ->output_offset, 1993 R_FRV_TLSDESC_VALUE, idx, ad, entry); 1994 1995 bfd_put_32 (output_bfd, 0, 1996 frvfdpic_got_section (info)->contents 1997 + frvfdpic_got_initial_offset (info) 1998 + entry->tlsdesc_entry); 1999 } 2000 2001 bfd_put_32 (output_bfd, ad, 2002 frvfdpic_got_section (info)->contents 2003 + frvfdpic_got_initial_offset (info) 2004 + entry->tlsdesc_entry + 4); 2005 } 2006 2007 /* Generate code for the get-TLS-offset PLT entry. */ 2008 if (entry->tlsplt_entry != (bfd_vma) -1) 2009 { 2010 bfd_byte *plt_code = frvfdpic_plt_section (info)->contents 2011 + entry->tlsplt_entry; 2012 2013 if (info->executable 2014 && (entry->symndx != -1 2015 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 2016 { 2017 int idx = dynindx; 2018 bfd_vma ad = addend; 2019 2020 /* sec may be NULL when referencing an undefweak symbol 2021 while linking a static executable. */ 2022 if (!sec) 2023 { 2024 BFD_ASSERT (entry->symndx == -1 2025 && entry->d.h->root.type == bfd_link_hash_undefweak); 2026 } 2027 else 2028 { 2029 if (entry->symndx == -1) 2030 ad += entry->d.h->root.u.def.value; 2031 else 2032 ad += sym->st_value; 2033 ad += sec->output_offset; 2034 if (sec->output_section 2035 && elf_section_data (sec->output_section)) 2036 idx = elf_section_data (sec->output_section)->dynindx; 2037 else 2038 idx = 0; 2039 } 2040 2041 /* *ABS*+addend is special for TLS relocations, use only the 2042 addend for the TLS offset, and take the module id as 2043 0. */ 2044 if (idx == 0 2045 && (bfd_is_abs_section (sec) 2046 || bfd_is_und_section (sec))) 2047 ; 2048 /* For other TLS symbols that bind locally, add the section 2049 TLS offset to the addend. */ 2050 else if (sec) 2051 ad += sec->output_section->vma - tls_biased_base (info); 2052 2053 if ((bfd_signed_vma)ad >= -(1 << (16 - 1)) 2054 && (bfd_signed_vma)ad < (1 << (16 - 1))) 2055 { 2056 /* setlos lo(ad), gr9 */ 2057 bfd_put_32 (output_bfd, 2058 0x92fc0000 2059 | (ad 2060 & (((bfd_vma)1 << 16) - 1)), 2061 plt_code); 2062 plt_code += 4; 2063 } 2064 else 2065 { 2066 /* sethi.p hi(ad), gr9 2067 setlo lo(ad), gr9 */ 2068 bfd_put_32 (output_bfd, 2069 0x12f80000 2070 | ((ad >> 16) 2071 & (((bfd_vma)1 << 16) - 1)), 2072 plt_code); 2073 plt_code += 4; 2074 bfd_put_32 (output_bfd, 2075 0x92f40000 2076 | (ad 2077 & (((bfd_vma)1 << 16) - 1)), 2078 plt_code); 2079 plt_code += 4; 2080 } 2081 /* ret */ 2082 bfd_put_32 (output_bfd, 0xc03a4000, plt_code); 2083 } 2084 else if (entry->tlsoff_entry) 2085 { 2086 /* Figure out what kind of PLT entry we need, depending on the 2087 location of the TLS descriptor within the GOT. */ 2088 if (entry->tlsoff_entry >= -(1 << (12 - 1)) 2089 && entry->tlsoff_entry < (1 << (12 - 1))) 2090 { 2091 /* ldi @(gr15, tlsoff_entry), gr9 */ 2092 bfd_put_32 (output_bfd, 2093 0x92c8f000 | (entry->tlsoff_entry 2094 & ((1 << 12) - 1)), 2095 plt_code); 2096 plt_code += 4; 2097 } 2098 else 2099 { 2100 if (entry->tlsoff_entry >= -(1 << (16 - 1)) 2101 && entry->tlsoff_entry < (1 << (16 - 1))) 2102 { 2103 /* setlos lo(tlsoff_entry), gr8 */ 2104 bfd_put_32 (output_bfd, 2105 0x90fc0000 2106 | (entry->tlsoff_entry 2107 & (((bfd_vma)1 << 16) - 1)), 2108 plt_code); 2109 plt_code += 4; 2110 } 2111 else 2112 { 2113 /* sethi.p hi(tlsoff_entry), gr8 2114 setlo lo(tlsoff_entry), gr8 */ 2115 bfd_put_32 (output_bfd, 2116 0x10f80000 2117 | ((entry->tlsoff_entry >> 16) 2118 & (((bfd_vma)1 << 16) - 1)), 2119 plt_code); 2120 plt_code += 4; 2121 bfd_put_32 (output_bfd, 2122 0x90f40000 2123 | (entry->tlsoff_entry 2124 & (((bfd_vma)1 << 16) - 1)), 2125 plt_code); 2126 plt_code += 4; 2127 } 2128 /* ld @(gr15,gr8),gr9 */ 2129 bfd_put_32 (output_bfd, 0x9008f108, plt_code); 2130 plt_code += 4; 2131 } 2132 /* ret */ 2133 bfd_put_32 (output_bfd, 0xc03a4000, plt_code); 2134 } 2135 else 2136 { 2137 BFD_ASSERT (entry->tlsdesc_entry); 2138 2139 /* Figure out what kind of PLT entry we need, depending on the 2140 location of the TLS descriptor within the GOT. */ 2141 if (entry->tlsdesc_entry >= -(1 << (12 - 1)) 2142 && entry->tlsdesc_entry < (1 << (12 - 1))) 2143 { 2144 /* lddi @(gr15, tlsdesc_entry), gr8 */ 2145 bfd_put_32 (output_bfd, 2146 0x90ccf000 | (entry->tlsdesc_entry 2147 & ((1 << 12) - 1)), 2148 plt_code); 2149 plt_code += 4; 2150 } 2151 else 2152 { 2153 if (entry->tlsdesc_entry >= -(1 << (16 - 1)) 2154 && entry->tlsdesc_entry < (1 << (16 - 1))) 2155 { 2156 /* setlos lo(tlsdesc_entry), gr8 */ 2157 bfd_put_32 (output_bfd, 2158 0x90fc0000 2159 | (entry->tlsdesc_entry 2160 & (((bfd_vma)1 << 16) - 1)), 2161 plt_code); 2162 plt_code += 4; 2163 } 2164 else 2165 { 2166 /* sethi.p hi(tlsdesc_entry), gr8 2167 setlo lo(tlsdesc_entry), gr8 */ 2168 bfd_put_32 (output_bfd, 2169 0x10f80000 2170 | ((entry->tlsdesc_entry >> 16) 2171 & (((bfd_vma)1 << 16) - 1)), 2172 plt_code); 2173 plt_code += 4; 2174 bfd_put_32 (output_bfd, 2175 0x90f40000 2176 | (entry->tlsdesc_entry 2177 & (((bfd_vma)1 << 16) - 1)), 2178 plt_code); 2179 plt_code += 4; 2180 } 2181 /* ldd @(gr15,gr8),gr8 */ 2182 bfd_put_32 (output_bfd, 0x9008f148, plt_code); 2183 plt_code += 4; 2184 } 2185 /* jmpl @(gr8,gr0) */ 2186 bfd_put_32 (output_bfd, 0x80308000, plt_code); 2187 } 2188 } 2189 2190 return TRUE; 2191} 2192 2193/* Handle an FRV small data reloc. */ 2194 2195static bfd_reloc_status_type 2196elf32_frv_relocate_gprel12 (info, input_bfd, input_section, relocation, 2197 contents, value) 2198 struct bfd_link_info *info; 2199 bfd *input_bfd; 2200 asection *input_section; 2201 Elf_Internal_Rela *relocation; 2202 bfd_byte *contents; 2203 bfd_vma value; 2204{ 2205 bfd_vma insn; 2206 bfd_vma gp; 2207 struct bfd_link_hash_entry *h; 2208 2209 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 2210 2211 gp = (h->u.def.value 2212 + h->u.def.section->output_section->vma 2213 + h->u.def.section->output_offset); 2214 2215 value -= input_section->output_section->vma; 2216 value -= (gp - input_section->output_section->vma); 2217 2218 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 2219 2220 value += relocation->r_addend; 2221 2222 if ((long) value > 0x7ff || (long) value < -0x800) 2223 return bfd_reloc_overflow; 2224 2225 bfd_put_32 (input_bfd, 2226 (insn & 0xfffff000) | (value & 0xfff), 2227 contents + relocation->r_offset); 2228 2229 return bfd_reloc_ok; 2230} 2231 2232/* Handle an FRV small data reloc. for the u12 field. */ 2233 2234static bfd_reloc_status_type 2235elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, relocation, 2236 contents, value) 2237 struct bfd_link_info *info; 2238 bfd *input_bfd; 2239 asection *input_section; 2240 Elf_Internal_Rela *relocation; 2241 bfd_byte *contents; 2242 bfd_vma value; 2243{ 2244 bfd_vma insn; 2245 bfd_vma gp; 2246 struct bfd_link_hash_entry *h; 2247 bfd_vma mask; 2248 2249 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 2250 2251 gp = (h->u.def.value 2252 + h->u.def.section->output_section->vma 2253 + h->u.def.section->output_offset); 2254 2255 value -= input_section->output_section->vma; 2256 value -= (gp - input_section->output_section->vma); 2257 2258 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 2259 2260 value += relocation->r_addend; 2261 2262 if ((long) value > 0x7ff || (long) value < -0x800) 2263 return bfd_reloc_overflow; 2264 2265 /* The high 6 bits go into bits 17-12. The low 6 bits go into bits 5-0. */ 2266 mask = 0x3f03f; 2267 insn = (insn & ~mask) | ((value & 0xfc0) << 12) | (value & 0x3f); 2268 2269 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); 2270 2271 return bfd_reloc_ok; 2272} 2273 2274/* Handle an FRV ELF HI16 reloc. */ 2275 2276static bfd_reloc_status_type 2277elf32_frv_relocate_hi16 (input_bfd, relhi, contents, value) 2278 bfd *input_bfd; 2279 Elf_Internal_Rela *relhi; 2280 bfd_byte *contents; 2281 bfd_vma value; 2282{ 2283 bfd_vma insn; 2284 2285 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); 2286 2287 value += relhi->r_addend; 2288 value = ((value >> 16) & 0xffff); 2289 2290 insn = (insn & 0xffff0000) | value; 2291 2292 if ((long) value > 0xffff || (long) value < -0x10000) 2293 return bfd_reloc_overflow; 2294 2295 bfd_put_32 (input_bfd, insn, contents + relhi->r_offset); 2296 return bfd_reloc_ok; 2297 2298} 2299static bfd_reloc_status_type 2300elf32_frv_relocate_lo16 (input_bfd, rello, contents, value) 2301 bfd *input_bfd; 2302 Elf_Internal_Rela *rello; 2303 bfd_byte *contents; 2304 bfd_vma value; 2305{ 2306 bfd_vma insn; 2307 2308 insn = bfd_get_32 (input_bfd, contents + rello->r_offset); 2309 2310 value += rello->r_addend; 2311 value = value & 0xffff; 2312 2313 insn = (insn & 0xffff0000) | value; 2314 2315 if ((long) value > 0xffff || (long) value < -0x10000) 2316 return bfd_reloc_overflow; 2317 2318 bfd_put_32 (input_bfd, insn, contents + rello->r_offset); 2319 return bfd_reloc_ok; 2320} 2321 2322/* Perform the relocation for the CALL label24 instruction. */ 2323 2324static bfd_reloc_status_type 2325elf32_frv_relocate_label24 (input_bfd, input_section, rello, contents, value) 2326 bfd *input_bfd; 2327 asection *input_section; 2328 Elf_Internal_Rela *rello; 2329 bfd_byte *contents; 2330 bfd_vma value; 2331{ 2332 bfd_vma insn; 2333 bfd_vma label6; 2334 bfd_vma label18; 2335 2336 /* The format for the call instruction is: 2337 2338 0 000000 0001111 000000000000000000 2339 label6 opcode label18 2340 2341 The branch calculation is: pc + (4*label24) 2342 where label24 is the concatenation of label6 and label18. */ 2343 2344 /* Grab the instruction. */ 2345 insn = bfd_get_32 (input_bfd, contents + rello->r_offset); 2346 2347 value -= input_section->output_section->vma + input_section->output_offset; 2348 value -= rello->r_offset; 2349 value += rello->r_addend; 2350 2351 value = value >> 2; 2352 2353 label6 = value & 0xfc0000; 2354 label6 = label6 << 7; 2355 2356 label18 = value & 0x3ffff; 2357 2358 insn = insn & 0x803c0000; 2359 insn = insn | label6; 2360 insn = insn | label18; 2361 2362 bfd_put_32 (input_bfd, insn, contents + rello->r_offset); 2363 2364 return bfd_reloc_ok; 2365} 2366 2367static bfd_reloc_status_type 2368elf32_frv_relocate_gprelhi (info, input_bfd, input_section, relocation, 2369 contents, value) 2370 struct bfd_link_info *info; 2371 bfd *input_bfd; 2372 asection *input_section; 2373 Elf_Internal_Rela *relocation; 2374 bfd_byte *contents; 2375 bfd_vma value; 2376{ 2377 bfd_vma insn; 2378 bfd_vma gp; 2379 struct bfd_link_hash_entry *h; 2380 2381 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 2382 2383 gp = (h->u.def.value 2384 + h->u.def.section->output_section->vma 2385 + h->u.def.section->output_offset); 2386 2387 value -= input_section->output_section->vma; 2388 value -= (gp - input_section->output_section->vma); 2389 value += relocation->r_addend; 2390 value = ((value >> 16) & 0xffff); 2391 2392 if ((long) value > 0xffff || (long) value < -0x10000) 2393 return bfd_reloc_overflow; 2394 2395 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 2396 insn = (insn & 0xffff0000) | value; 2397 2398 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); 2399 return bfd_reloc_ok; 2400} 2401 2402static bfd_reloc_status_type 2403elf32_frv_relocate_gprello (info, input_bfd, input_section, relocation, 2404 contents, value) 2405 struct bfd_link_info *info; 2406 bfd *input_bfd; 2407 asection *input_section; 2408 Elf_Internal_Rela *relocation; 2409 bfd_byte *contents; 2410 bfd_vma value; 2411{ 2412 bfd_vma insn; 2413 bfd_vma gp; 2414 struct bfd_link_hash_entry *h; 2415 2416 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 2417 2418 gp = (h->u.def.value 2419 + h->u.def.section->output_section->vma 2420 + h->u.def.section->output_offset); 2421 2422 value -= input_section->output_section->vma; 2423 value -= (gp - input_section->output_section->vma); 2424 value += relocation->r_addend; 2425 value = value & 0xffff; 2426 2427 if ((long) value > 0xffff || (long) value < -0x10000) 2428 return bfd_reloc_overflow; 2429 2430 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 2431 insn = (insn & 0xffff0000) | value; 2432 2433 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); 2434 2435 return bfd_reloc_ok; 2436} 2437 2438static reloc_howto_type * 2439frv_reloc_type_lookup (abfd, code) 2440 bfd *abfd ATTRIBUTE_UNUSED; 2441 bfd_reloc_code_real_type code; 2442{ 2443 switch (code) 2444 { 2445 default: 2446 break; 2447 2448 case BFD_RELOC_NONE: 2449 return &elf32_frv_howto_table[ (int) R_FRV_NONE]; 2450 2451 case BFD_RELOC_32: 2452 if (elf_elfheader (abfd)->e_type == ET_EXEC 2453 || elf_elfheader (abfd)->e_type == ET_DYN) 2454 return &elf32_frv_rel_32_howto; 2455 /* Fall through. */ 2456 case BFD_RELOC_CTOR: 2457 return &elf32_frv_howto_table[ (int) R_FRV_32]; 2458 2459 case BFD_RELOC_FRV_LABEL16: 2460 return &elf32_frv_howto_table[ (int) R_FRV_LABEL16]; 2461 2462 case BFD_RELOC_FRV_LABEL24: 2463 return &elf32_frv_howto_table[ (int) R_FRV_LABEL24]; 2464 2465 case BFD_RELOC_FRV_LO16: 2466 return &elf32_frv_howto_table[ (int) R_FRV_LO16]; 2467 2468 case BFD_RELOC_FRV_HI16: 2469 return &elf32_frv_howto_table[ (int) R_FRV_HI16]; 2470 2471 case BFD_RELOC_FRV_GPREL12: 2472 return &elf32_frv_howto_table[ (int) R_FRV_GPREL12]; 2473 2474 case BFD_RELOC_FRV_GPRELU12: 2475 return &elf32_frv_howto_table[ (int) R_FRV_GPRELU12]; 2476 2477 case BFD_RELOC_FRV_GPREL32: 2478 return &elf32_frv_howto_table[ (int) R_FRV_GPREL32]; 2479 2480 case BFD_RELOC_FRV_GPRELHI: 2481 return &elf32_frv_howto_table[ (int) R_FRV_GPRELHI]; 2482 2483 case BFD_RELOC_FRV_GPRELLO: 2484 return &elf32_frv_howto_table[ (int) R_FRV_GPRELLO]; 2485 2486 case BFD_RELOC_FRV_GOT12: 2487 return &elf32_frv_howto_table[ (int) R_FRV_GOT12]; 2488 2489 case BFD_RELOC_FRV_GOTHI: 2490 return &elf32_frv_howto_table[ (int) R_FRV_GOTHI]; 2491 2492 case BFD_RELOC_FRV_GOTLO: 2493 return &elf32_frv_howto_table[ (int) R_FRV_GOTLO]; 2494 2495 case BFD_RELOC_FRV_FUNCDESC: 2496 if (elf_elfheader (abfd)->e_type == ET_EXEC 2497 || elf_elfheader (abfd)->e_type == ET_DYN) 2498 return &elf32_frv_rel_funcdesc_howto; 2499 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC]; 2500 2501 case BFD_RELOC_FRV_FUNCDESC_GOT12: 2502 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOT12]; 2503 2504 case BFD_RELOC_FRV_FUNCDESC_GOTHI: 2505 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTHI]; 2506 2507 case BFD_RELOC_FRV_FUNCDESC_GOTLO: 2508 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTLO]; 2509 2510 case BFD_RELOC_FRV_FUNCDESC_VALUE: 2511 if (elf_elfheader (abfd)->e_type == ET_EXEC 2512 || elf_elfheader (abfd)->e_type == ET_DYN) 2513 return &elf32_frv_rel_funcdesc_value_howto; 2514 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_VALUE]; 2515 2516 case BFD_RELOC_FRV_FUNCDESC_GOTOFF12: 2517 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFF12]; 2518 2519 case BFD_RELOC_FRV_FUNCDESC_GOTOFFHI: 2520 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFHI]; 2521 2522 case BFD_RELOC_FRV_FUNCDESC_GOTOFFLO: 2523 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFLO]; 2524 2525 case BFD_RELOC_FRV_GOTOFF12: 2526 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFF12]; 2527 2528 case BFD_RELOC_FRV_GOTOFFHI: 2529 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFHI]; 2530 2531 case BFD_RELOC_FRV_GOTOFFLO: 2532 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFLO]; 2533 2534 case BFD_RELOC_FRV_GETTLSOFF: 2535 return &elf32_frv_howto_table[ (int) R_FRV_GETTLSOFF]; 2536 2537 case BFD_RELOC_FRV_TLSDESC_VALUE: 2538 if (elf_elfheader (abfd)->e_type == ET_EXEC 2539 || elf_elfheader (abfd)->e_type == ET_DYN) 2540 return &elf32_frv_rel_tlsdesc_value_howto; 2541 return &elf32_frv_howto_table[ (int) R_FRV_TLSDESC_VALUE]; 2542 2543 case BFD_RELOC_FRV_GOTTLSDESC12: 2544 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESC12]; 2545 2546 case BFD_RELOC_FRV_GOTTLSDESCHI: 2547 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESCHI]; 2548 2549 case BFD_RELOC_FRV_GOTTLSDESCLO: 2550 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESCLO]; 2551 2552 case BFD_RELOC_FRV_TLSMOFF12: 2553 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFF12]; 2554 2555 case BFD_RELOC_FRV_TLSMOFFHI: 2556 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFFHI]; 2557 2558 case BFD_RELOC_FRV_TLSMOFFLO: 2559 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFFLO]; 2560 2561 case BFD_RELOC_FRV_GOTTLSOFF12: 2562 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFF12]; 2563 2564 case BFD_RELOC_FRV_GOTTLSOFFHI: 2565 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFFHI]; 2566 2567 case BFD_RELOC_FRV_GOTTLSOFFLO: 2568 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFFLO]; 2569 2570 case BFD_RELOC_FRV_TLSOFF: 2571 if (elf_elfheader (abfd)->e_type == ET_EXEC 2572 || elf_elfheader (abfd)->e_type == ET_DYN) 2573 return &elf32_frv_rel_tlsoff_howto; 2574 return &elf32_frv_howto_table[ (int) R_FRV_TLSOFF]; 2575 2576 case BFD_RELOC_FRV_TLSDESC_RELAX: 2577 return &elf32_frv_howto_table[ (int) R_FRV_TLSDESC_RELAX]; 2578 2579 case BFD_RELOC_FRV_GETTLSOFF_RELAX: 2580 return &elf32_frv_howto_table[ (int) R_FRV_GETTLSOFF_RELAX]; 2581 2582 case BFD_RELOC_FRV_TLSOFF_RELAX: 2583 return &elf32_frv_howto_table[ (int) R_FRV_TLSOFF_RELAX]; 2584 2585 case BFD_RELOC_FRV_TLSMOFF: 2586 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFF]; 2587 2588 case BFD_RELOC_VTABLE_INHERIT: 2589 return &elf32_frv_vtinherit_howto; 2590 2591 case BFD_RELOC_VTABLE_ENTRY: 2592 return &elf32_frv_vtentry_howto; 2593 } 2594 2595 return NULL; 2596} 2597 2598/* Set the howto pointer for an FRV ELF reloc. */ 2599 2600static void 2601frv_info_to_howto_rela (abfd, cache_ptr, dst) 2602 bfd *abfd ATTRIBUTE_UNUSED; 2603 arelent *cache_ptr; 2604 Elf_Internal_Rela *dst; 2605{ 2606 unsigned int r_type; 2607 2608 r_type = ELF32_R_TYPE (dst->r_info); 2609 switch (r_type) 2610 { 2611 case R_FRV_GNU_VTINHERIT: 2612 cache_ptr->howto = &elf32_frv_vtinherit_howto; 2613 break; 2614 2615 case R_FRV_GNU_VTENTRY: 2616 cache_ptr->howto = &elf32_frv_vtentry_howto; 2617 break; 2618 2619 default: 2620 cache_ptr->howto = & elf32_frv_howto_table [r_type]; 2621 break; 2622 } 2623} 2624 2625/* Set the howto pointer for an FRV ELF REL reloc. */ 2626static void 2627frvfdpic_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, 2628 arelent *cache_ptr, Elf_Internal_Rela *dst) 2629{ 2630 unsigned int r_type; 2631 2632 r_type = ELF32_R_TYPE (dst->r_info); 2633 switch (r_type) 2634 { 2635 case R_FRV_32: 2636 cache_ptr->howto = &elf32_frv_rel_32_howto; 2637 break; 2638 2639 case R_FRV_FUNCDESC: 2640 cache_ptr->howto = &elf32_frv_rel_funcdesc_howto; 2641 break; 2642 2643 case R_FRV_FUNCDESC_VALUE: 2644 cache_ptr->howto = &elf32_frv_rel_funcdesc_value_howto; 2645 break; 2646 2647 case R_FRV_TLSDESC_VALUE: 2648 cache_ptr->howto = &elf32_frv_rel_tlsdesc_value_howto; 2649 break; 2650 2651 case R_FRV_TLSOFF: 2652 cache_ptr->howto = &elf32_frv_rel_tlsoff_howto; 2653 break; 2654 2655 default: 2656 cache_ptr->howto = NULL; 2657 break; 2658 } 2659} 2660 2661/* Perform a single relocation. By default we use the standard BFD 2662 routines, but a few relocs, we have to do them ourselves. */ 2663 2664static bfd_reloc_status_type 2665frv_final_link_relocate (howto, input_bfd, input_section, contents, rel, 2666 relocation) 2667 reloc_howto_type *howto; 2668 bfd *input_bfd; 2669 asection *input_section; 2670 bfd_byte *contents; 2671 Elf_Internal_Rela *rel; 2672 bfd_vma relocation; 2673{ 2674 return _bfd_final_link_relocate (howto, input_bfd, input_section, 2675 contents, rel->r_offset, relocation, 2676 rel->r_addend); 2677} 2678 2679 2680/* Relocate an FRV ELF section. 2681 2682 The RELOCATE_SECTION function is called by the new ELF backend linker 2683 to handle the relocations for a section. 2684 2685 The relocs are always passed as Rela structures; if the section 2686 actually uses Rel structures, the r_addend field will always be 2687 zero. 2688 2689 This function is responsible for adjusting the section contents as 2690 necessary, and (if using Rela relocs and generating a relocatable 2691 output file) adjusting the reloc addend as necessary. 2692 2693 This function does not have to worry about setting the reloc 2694 address or the reloc symbol index. 2695 2696 LOCAL_SYMS is a pointer to the swapped in local symbols. 2697 2698 LOCAL_SECTIONS is an array giving the section in the input file 2699 corresponding to the st_shndx field of each local symbol. 2700 2701 The global hash table entry for the global symbols can be found 2702 via elf_sym_hashes (input_bfd). 2703 2704 When generating relocatable output, this function must handle 2705 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 2706 going to be the section symbol corresponding to the output 2707 section, which means that the addend must be adjusted 2708 accordingly. */ 2709 2710static bfd_boolean 2711elf32_frv_relocate_section (output_bfd, info, input_bfd, input_section, 2712 contents, relocs, local_syms, local_sections) 2713 bfd *output_bfd ATTRIBUTE_UNUSED; 2714 struct bfd_link_info *info; 2715 bfd *input_bfd; 2716 asection *input_section; 2717 bfd_byte *contents; 2718 Elf_Internal_Rela *relocs; 2719 Elf_Internal_Sym *local_syms; 2720 asection **local_sections; 2721{ 2722 Elf_Internal_Shdr *symtab_hdr; 2723 struct elf_link_hash_entry **sym_hashes; 2724 Elf_Internal_Rela *rel; 2725 Elf_Internal_Rela *relend; 2726 unsigned isec_segment, got_segment, plt_segment, gprel_segment, tls_segment, 2727 check_segment[2]; 2728 int silence_segment_error = !(info->shared || info->pie); 2729 unsigned long insn; 2730 2731 if (info->relocatable) 2732 return TRUE; 2733 2734 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; 2735 sym_hashes = elf_sym_hashes (input_bfd); 2736 relend = relocs + input_section->reloc_count; 2737 2738 isec_segment = _frvfdpic_osec_to_segment (output_bfd, 2739 input_section->output_section); 2740 if (IS_FDPIC (output_bfd) && frvfdpic_got_section (info)) 2741 got_segment = _frvfdpic_osec_to_segment (output_bfd, 2742 frvfdpic_got_section (info) 2743 ->output_section); 2744 else 2745 got_segment = -1; 2746 if (IS_FDPIC (output_bfd) && frvfdpic_gotfixup_section (info)) 2747 gprel_segment = _frvfdpic_osec_to_segment (output_bfd, 2748 frvfdpic_gotfixup_section (info) 2749 ->output_section); 2750 else 2751 gprel_segment = -1; 2752 if (IS_FDPIC (output_bfd) && frvfdpic_plt_section (info)) 2753 plt_segment = _frvfdpic_osec_to_segment (output_bfd, 2754 frvfdpic_plt_section (info) 2755 ->output_section); 2756 else 2757 plt_segment = -1; 2758 if (elf_hash_table (info)->tls_sec) 2759 tls_segment = _frvfdpic_osec_to_segment (output_bfd, 2760 elf_hash_table (info)->tls_sec); 2761 else 2762 tls_segment = -1; 2763 2764 for (rel = relocs; rel < relend; rel ++) 2765 { 2766 reloc_howto_type *howto; 2767 unsigned long r_symndx; 2768 Elf_Internal_Sym *sym; 2769 asection *sec; 2770 struct elf_link_hash_entry *h; 2771 bfd_vma relocation; 2772 bfd_reloc_status_type r; 2773 const char * name = NULL; 2774 int r_type; 2775 asection *osec; 2776 struct frvfdpic_relocs_info *picrel; 2777 bfd_vma orig_addend = rel->r_addend; 2778 2779 r_type = ELF32_R_TYPE (rel->r_info); 2780 2781 if ( r_type == R_FRV_GNU_VTINHERIT 2782 || r_type == R_FRV_GNU_VTENTRY) 2783 continue; 2784 2785 /* This is a final link. */ 2786 r_symndx = ELF32_R_SYM (rel->r_info); 2787 howto = elf32_frv_howto_table + ELF32_R_TYPE (rel->r_info); 2788 h = NULL; 2789 sym = NULL; 2790 sec = NULL; 2791 2792 if (r_symndx < symtab_hdr->sh_info) 2793 { 2794 sym = local_syms + r_symndx; 2795 osec = sec = local_sections [r_symndx]; 2796 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2797 2798 name = bfd_elf_string_from_elf_section 2799 (input_bfd, symtab_hdr->sh_link, sym->st_name); 2800 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; 2801 } 2802 else 2803 { 2804 h = sym_hashes [r_symndx - symtab_hdr->sh_info]; 2805 2806 while (h->root.type == bfd_link_hash_indirect 2807 || h->root.type == bfd_link_hash_warning) 2808 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2809 2810 name = h->root.root.string; 2811 2812 if ((h->root.type == bfd_link_hash_defined 2813 || h->root.type == bfd_link_hash_defweak)) 2814 { 2815 if (/* TLSMOFF forces local binding. */ 2816 r_type != R_FRV_TLSMOFF 2817 && ! FRVFDPIC_SYM_LOCAL (info, h)) 2818 { 2819 sec = NULL; 2820 relocation = 0; 2821 } 2822 else 2823 { 2824 sec = h->root.u.def.section; 2825 relocation = (h->root.u.def.value 2826 + sec->output_section->vma 2827 + sec->output_offset); 2828 } 2829 } 2830 else if (h->root.type == bfd_link_hash_undefweak) 2831 { 2832 relocation = 0; 2833 } 2834 else if (info->unresolved_syms_in_objects == RM_IGNORE 2835 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) 2836 relocation = 0; 2837 else 2838 { 2839 if (! ((*info->callbacks->undefined_symbol) 2840 (info, h->root.root.string, input_bfd, 2841 input_section, rel->r_offset, 2842 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR 2843 || ELF_ST_VISIBILITY (h->other))))) 2844 return FALSE; 2845 relocation = 0; 2846 } 2847 osec = sec; 2848 } 2849 2850 switch (r_type) 2851 { 2852 case R_FRV_LABEL24: 2853 case R_FRV_32: 2854 if (! IS_FDPIC (output_bfd)) 2855 goto non_fdpic; 2856 2857 case R_FRV_GOT12: 2858 case R_FRV_GOTHI: 2859 case R_FRV_GOTLO: 2860 case R_FRV_FUNCDESC_GOT12: 2861 case R_FRV_FUNCDESC_GOTHI: 2862 case R_FRV_FUNCDESC_GOTLO: 2863 case R_FRV_GOTOFF12: 2864 case R_FRV_GOTOFFHI: 2865 case R_FRV_GOTOFFLO: 2866 case R_FRV_FUNCDESC_GOTOFF12: 2867 case R_FRV_FUNCDESC_GOTOFFHI: 2868 case R_FRV_FUNCDESC_GOTOFFLO: 2869 case R_FRV_FUNCDESC: 2870 case R_FRV_FUNCDESC_VALUE: 2871 case R_FRV_GETTLSOFF: 2872 case R_FRV_TLSDESC_VALUE: 2873 case R_FRV_GOTTLSDESC12: 2874 case R_FRV_GOTTLSDESCHI: 2875 case R_FRV_GOTTLSDESCLO: 2876 case R_FRV_TLSMOFF12: 2877 case R_FRV_TLSMOFFHI: 2878 case R_FRV_TLSMOFFLO: 2879 case R_FRV_GOTTLSOFF12: 2880 case R_FRV_GOTTLSOFFHI: 2881 case R_FRV_GOTTLSOFFLO: 2882 case R_FRV_TLSOFF: 2883 case R_FRV_TLSDESC_RELAX: 2884 case R_FRV_GETTLSOFF_RELAX: 2885 case R_FRV_TLSOFF_RELAX: 2886 case R_FRV_TLSMOFF: 2887 if (h != NULL) 2888 picrel = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info 2889 (info), input_bfd, h, 2890 orig_addend, INSERT); 2891 else 2892 /* In order to find the entry we created before, we must 2893 use the original addend, not the one that may have been 2894 modified by _bfd_elf_rela_local_sym(). */ 2895 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info 2896 (info), input_bfd, r_symndx, 2897 orig_addend, INSERT); 2898 if (! picrel) 2899 return FALSE; 2900 2901 if (!_frvfdpic_emit_got_relocs_plt_entries (picrel, output_bfd, info, 2902 osec, sym, 2903 rel->r_addend)) 2904 { 2905 (*_bfd_error_handler) 2906 (_("%B(%A+0x%x): relocation to `%s+%x' may have caused the error above"), 2907 input_bfd, input_section, rel->r_offset, name, rel->r_addend); 2908 return FALSE; 2909 } 2910 2911 break; 2912 2913 default: 2914 non_fdpic: 2915 picrel = NULL; 2916 if (h && ! FRVFDPIC_SYM_LOCAL (info, h)) 2917 { 2918 info->callbacks->warning 2919 (info, _("relocation references symbol not defined in the module"), 2920 name, input_bfd, input_section, rel->r_offset); 2921 return FALSE; 2922 } 2923 break; 2924 } 2925 2926 switch (r_type) 2927 { 2928 case R_FRV_GETTLSOFF: 2929 case R_FRV_TLSDESC_VALUE: 2930 case R_FRV_GOTTLSDESC12: 2931 case R_FRV_GOTTLSDESCHI: 2932 case R_FRV_GOTTLSDESCLO: 2933 case R_FRV_TLSMOFF12: 2934 case R_FRV_TLSMOFFHI: 2935 case R_FRV_TLSMOFFLO: 2936 case R_FRV_GOTTLSOFF12: 2937 case R_FRV_GOTTLSOFFHI: 2938 case R_FRV_GOTTLSOFFLO: 2939 case R_FRV_TLSOFF: 2940 case R_FRV_TLSDESC_RELAX: 2941 case R_FRV_GETTLSOFF_RELAX: 2942 case R_FRV_TLSOFF_RELAX: 2943 case R_FRV_TLSMOFF: 2944 if (sec && (bfd_is_abs_section (sec) || bfd_is_und_section (sec))) 2945 relocation += tls_biased_base (info); 2946 break; 2947 2948 default: 2949 break; 2950 } 2951 2952 /* Try to apply TLS relaxations. */ 2953 if (1) 2954 switch (r_type) 2955 { 2956 2957#define LOCAL_EXEC_P(info, picrel) \ 2958 ((info)->executable \ 2959 && (picrel->symndx != -1 || FRVFDPIC_SYM_LOCAL ((info), (picrel)->d.h))) 2960#define INITIAL_EXEC_P(info, picrel) \ 2961 (((info)->executable || (info)->flags & DF_STATIC_TLS) \ 2962 && (picrel)->tlsoff_entry) 2963 2964#define IN_RANGE_FOR_OFST12_P(value) \ 2965 ((bfd_vma)((value) + 2048) < (bfd_vma)4096) 2966#define IN_RANGE_FOR_SETLOS_P(value) \ 2967 ((bfd_vma)((value) + 32768) < (bfd_vma)65536) 2968#define TLSMOFF_IN_RANGE_FOR_SETLOS_P(value, info) \ 2969 (IN_RANGE_FOR_SETLOS_P ((value) - tls_biased_base (info))) 2970 2971#define RELAX_GETTLSOFF_LOCAL_EXEC_P(info, picrel, value) \ 2972 (LOCAL_EXEC_P ((info), (picrel)) \ 2973 && TLSMOFF_IN_RANGE_FOR_SETLOS_P((value), (info))) 2974#define RELAX_GETTLSOFF_INITIAL_EXEC_P(info, picrel) \ 2975 (INITIAL_EXEC_P ((info), (picrel)) \ 2976 && IN_RANGE_FOR_OFST12_P ((picrel)->tlsoff_entry)) 2977 2978#define RELAX_TLSDESC_LOCAL_EXEC_P(info, picrel, value) \ 2979 (LOCAL_EXEC_P ((info), (picrel))) 2980#define RELAX_TLSDESC_INITIAL_EXEC_P(info, picrel) \ 2981 (INITIAL_EXEC_P ((info), (picrel))) 2982 2983#define RELAX_GOTTLSOFF_LOCAL_EXEC_P(info, picrel, value) \ 2984 (LOCAL_EXEC_P ((info), (picrel)) \ 2985 && TLSMOFF_IN_RANGE_FOR_SETLOS_P((value), (info))) 2986 2987 case R_FRV_GETTLSOFF: 2988 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 2989 2990 /* Is this a call instruction? */ 2991 if ((insn & (unsigned long)0x01fc0000) != 0x003c0000) 2992 { 2993 r = info->callbacks->warning 2994 (info, 2995 _("R_FRV_GETTLSOFF not applied to a call instruction"), 2996 name, input_bfd, input_section, rel->r_offset); 2997 return FALSE; 2998 } 2999 3000 if (RELAX_GETTLSOFF_LOCAL_EXEC_P (info, picrel, 3001 relocation + rel->r_addend)) 3002 { 3003 /* Replace the call instruction (except the packing bit) 3004 with setlos #tlsmofflo(symbol+offset), gr9. */ 3005 insn &= (unsigned long)0x80000000; 3006 insn |= (unsigned long)0x12fc0000; 3007 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3008 3009 r_type = R_FRV_TLSMOFFLO; 3010 howto = elf32_frv_howto_table + r_type; 3011 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3012 } 3013 3014 else if (RELAX_GETTLSOFF_INITIAL_EXEC_P (info, picrel)) 3015 { 3016 /* Replace the call instruction (except the packing bit) 3017 with ldi @(gr15, #gottlsoff12(symbol+addend)), gr9. */ 3018 insn &= (unsigned long)0x80000000; 3019 insn |= (unsigned long)0x12c8f000; 3020 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3021 3022 r_type = R_FRV_GOTTLSOFF12; 3023 howto = elf32_frv_howto_table + r_type; 3024 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3025 } 3026 3027 break; 3028 3029 case R_FRV_GOTTLSDESC12: 3030 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3031 3032 /* Is this an lddi instruction? */ 3033 if ((insn & (unsigned long)0x01fc0000) != 0x00cc0000) 3034 { 3035 r = info->callbacks->warning 3036 (info, 3037 _("R_FRV_GOTTLSDESC12 not applied to an lddi instruction"), 3038 name, input_bfd, input_section, rel->r_offset); 3039 return FALSE; 3040 } 3041 3042 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3043 relocation + rel->r_addend) 3044 && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 3045 info)) 3046 { 3047 /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC 3048 with setlos #tlsmofflo(symbol+offset), gr<C+1>. 3049 Preserve the packing bit. */ 3050 insn = (insn & (unsigned long)0x80000000) 3051 | ((insn + (unsigned long)0x02000000) 3052 & (unsigned long)0x7e000000); 3053 insn |= (unsigned long)0x00fc0000; 3054 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3055 3056 r_type = R_FRV_TLSMOFFLO; 3057 howto = elf32_frv_howto_table + r_type; 3058 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3059 } 3060 3061 else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3062 relocation + rel->r_addend)) 3063 { 3064 /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC 3065 with sethi #tlsmoffhi(symbol+offset), gr<C+1>. 3066 Preserve the packing bit. */ 3067 insn = (insn & (unsigned long)0x80000000) 3068 | ((insn + (unsigned long)0x02000000) 3069 & (unsigned long)0x7e000000); 3070 insn |= (unsigned long)0x00f80000; 3071 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3072 3073 r_type = R_FRV_TLSMOFFHI; 3074 howto = elf32_frv_howto_table + r_type; 3075 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3076 } 3077 3078 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3079 { 3080 /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC 3081 with ldi @(grB, #gottlsoff12(symbol+offset), 3082 gr<C+1>. Preserve the packing bit. If gottlsoff12 3083 overflows, we'll error out, but that's sort-of ok, 3084 since we'd started with gottlsdesc12, that's actually 3085 more demanding. Compiling with -fPIE instead of 3086 -fpie would fix it; linking with --relax should fix 3087 it as well. */ 3088 insn = (insn & (unsigned long)0x80cbf000) 3089 | ((insn + (unsigned long)0x02000000) 3090 & (unsigned long)0x7e000000); 3091 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3092 3093 r_type = R_FRV_GOTTLSOFF12; 3094 howto = elf32_frv_howto_table + r_type; 3095 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3096 } 3097 3098 break; 3099 3100 case R_FRV_GOTTLSDESCHI: 3101 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3102 3103 /* Is this a sethi instruction? */ 3104 if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) 3105 { 3106 r = info->callbacks->warning 3107 (info, 3108 _("R_FRV_GOTTLSDESCHI not applied to a sethi instruction"), 3109 name, input_bfd, input_section, rel->r_offset); 3110 return FALSE; 3111 } 3112 3113 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3114 relocation + rel->r_addend) 3115 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3116 && IN_RANGE_FOR_SETLOS_P (picrel->tlsoff_entry))) 3117 { 3118 /* Replace sethi with a nop. Preserve the packing bit. */ 3119 insn &= (unsigned long)0x80000000; 3120 insn |= (unsigned long)0x00880000; 3121 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3122 3123 /* Nothing to relocate. */ 3124 continue; 3125 } 3126 3127 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3128 { 3129 /* Simply decay GOTTLSDESC to GOTTLSOFF. */ 3130 r_type = R_FRV_GOTTLSOFFHI; 3131 howto = elf32_frv_howto_table + r_type; 3132 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3133 } 3134 3135 break; 3136 3137 case R_FRV_GOTTLSDESCLO: 3138 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3139 3140 /* Is this a setlo or setlos instruction? */ 3141 if ((insn & (unsigned long)0x01f70000) != 0x00f40000) 3142 { 3143 r = info->callbacks->warning 3144 (info, 3145 _("R_FRV_GOTTLSDESCLO" 3146 " not applied to a setlo or setlos instruction"), 3147 name, input_bfd, input_section, rel->r_offset); 3148 return FALSE; 3149 } 3150 3151 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3152 relocation + rel->r_addend) 3153 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3154 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) 3155 { 3156 /* Replace setlo/setlos with a nop. Preserve the 3157 packing bit. */ 3158 insn &= (unsigned long)0x80000000; 3159 insn |= (unsigned long)0x00880000; 3160 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3161 3162 /* Nothing to relocate. */ 3163 continue; 3164 } 3165 3166 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3167 { 3168 /* If the corresponding sethi (if it exists) decayed 3169 to a nop, make sure this becomes (or already is) a 3170 setlos, not setlo. */ 3171 if (IN_RANGE_FOR_SETLOS_P (picrel->tlsoff_entry)) 3172 { 3173 insn |= (unsigned long)0x00080000; 3174 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3175 } 3176 3177 /* Simply decay GOTTLSDESC to GOTTLSOFF. */ 3178 r_type = R_FRV_GOTTLSOFFLO; 3179 howto = elf32_frv_howto_table + r_type; 3180 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3181 } 3182 3183 break; 3184 3185 case R_FRV_TLSDESC_RELAX: 3186 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3187 3188 /* Is this an ldd instruction? */ 3189 if ((insn & (unsigned long)0x01fc0fc0) != 0x00080140) 3190 { 3191 r = info->callbacks->warning 3192 (info, 3193 _("R_FRV_TLSDESC_RELAX not applied to an ldd instruction"), 3194 name, input_bfd, input_section, rel->r_offset); 3195 return FALSE; 3196 } 3197 3198 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3199 relocation + rel->r_addend) 3200 && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 3201 info)) 3202 { 3203 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC 3204 with setlos #tlsmofflo(symbol+offset), gr<C+1>. 3205 Preserve the packing bit. */ 3206 insn = (insn & (unsigned long)0x80000000) 3207 | ((insn + (unsigned long)0x02000000) 3208 & (unsigned long)0x7e000000); 3209 insn |= (unsigned long)0x00fc0000; 3210 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3211 3212 r_type = R_FRV_TLSMOFFLO; 3213 howto = elf32_frv_howto_table + r_type; 3214 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3215 } 3216 3217 else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3218 relocation + rel->r_addend)) 3219 { 3220 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC 3221 with sethi #tlsmoffhi(symbol+offset), gr<C+1>. 3222 Preserve the packing bit. */ 3223 insn = (insn & (unsigned long)0x80000000) 3224 | ((insn + (unsigned long)0x02000000) 3225 & (unsigned long)0x7e000000); 3226 insn |= (unsigned long)0x00f80000; 3227 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3228 3229 r_type = R_FRV_TLSMOFFHI; 3230 howto = elf32_frv_howto_table + r_type; 3231 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3232 } 3233 3234 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3235 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry)) 3236 { 3237 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC 3238 with ldi @(grB, #gottlsoff12(symbol+offset), gr<C+1>. 3239 Preserve the packing bit. */ 3240 insn = (insn & (unsigned long)0x8003f000) 3241 | (unsigned long)0x00c80000 3242 | ((insn + (unsigned long)0x02000000) 3243 & (unsigned long)0x7e000000); 3244 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3245 3246 r_type = R_FRV_GOTTLSOFF12; 3247 howto = elf32_frv_howto_table + r_type; 3248 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3249 } 3250 3251 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3252 { 3253 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC 3254 with ld #tlsoff(symbol+offset)@(grB, grA), gr<C+1>. 3255 Preserve the packing bit. */ 3256 insn = (insn & (unsigned long)0x81ffffbf) 3257 | ((insn + (unsigned long)0x02000000) 3258 & (unsigned long)0x7e000000); 3259 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3260 3261 /* #tlsoff(symbol+offset) is just a relaxation 3262 annotation, so there's nothing left to 3263 relocate. */ 3264 continue; 3265 } 3266 3267 break; 3268 3269 case R_FRV_GETTLSOFF_RELAX: 3270 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3271 3272 /* Is this a calll or callil instruction? */ 3273 if ((insn & (unsigned long)0x7ff80fc0) != 0x02300000) 3274 { 3275 r = info->callbacks->warning 3276 (info, 3277 _("R_FRV_GETTLSOFF_RELAX" 3278 " not applied to a calll instruction"), 3279 name, input_bfd, input_section, rel->r_offset); 3280 return FALSE; 3281 } 3282 3283 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3284 relocation + rel->r_addend) 3285 && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 3286 info)) 3287 { 3288 /* Replace calll with a nop. Preserve the packing bit. */ 3289 insn &= (unsigned long)0x80000000; 3290 insn |= (unsigned long)0x00880000; 3291 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3292 3293 /* Nothing to relocate. */ 3294 continue; 3295 } 3296 3297 else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, 3298 relocation + rel->r_addend)) 3299 { 3300 /* Replace calll with setlo #tlsmofflo(symbol+offset), gr9. 3301 Preserve the packing bit. */ 3302 insn &= (unsigned long)0x80000000; 3303 insn |= (unsigned long)0x12f40000; 3304 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3305 3306 r_type = R_FRV_TLSMOFFLO; 3307 howto = elf32_frv_howto_table + r_type; 3308 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3309 } 3310 3311 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) 3312 { 3313 /* Replace calll with a nop. Preserve the packing bit. */ 3314 insn &= (unsigned long)0x80000000; 3315 insn |= (unsigned long)0x00880000; 3316 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3317 3318 /* Nothing to relocate. */ 3319 continue; 3320 } 3321 3322 break; 3323 3324 case R_FRV_GOTTLSOFF12: 3325 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3326 3327 /* Is this an ldi instruction? */ 3328 if ((insn & (unsigned long)0x01fc0000) != 0x00c80000) 3329 { 3330 r = info->callbacks->warning 3331 (info, 3332 _("R_FRV_GOTTLSOFF12 not applied to an ldi instruction"), 3333 name, input_bfd, input_section, rel->r_offset); 3334 return FALSE; 3335 } 3336 3337 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, 3338 relocation + rel->r_addend)) 3339 { 3340 /* Replace ldi @(grB, #gottlsoff12(symbol+offset), grC 3341 with setlos #tlsmofflo(symbol+offset), grC. 3342 Preserve the packing bit. */ 3343 insn &= (unsigned long)0xfe000000; 3344 insn |= (unsigned long)0x00fc0000; 3345 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3346 3347 r_type = R_FRV_TLSMOFFLO; 3348 howto = elf32_frv_howto_table + r_type; 3349 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3350 } 3351 3352 break; 3353 3354 case R_FRV_GOTTLSOFFHI: 3355 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3356 3357 /* Is this a sethi instruction? */ 3358 if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) 3359 { 3360 r = info->callbacks->warning 3361 (info, 3362 _("R_FRV_GOTTLSOFFHI not applied to a sethi instruction"), 3363 name, input_bfd, input_section, rel->r_offset); 3364 return FALSE; 3365 } 3366 3367 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, 3368 relocation + rel->r_addend) 3369 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3370 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) 3371 { 3372 /* Replace sethi with a nop. Preserve the packing bit. */ 3373 insn &= (unsigned long)0x80000000; 3374 insn |= (unsigned long)0x00880000; 3375 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3376 3377 /* Nothing to relocate. */ 3378 continue; 3379 } 3380 3381 break; 3382 3383 case R_FRV_GOTTLSOFFLO: 3384 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3385 3386 /* Is this a setlo or setlos instruction? */ 3387 if ((insn & (unsigned long)0x01f70000) != 0x00f40000) 3388 { 3389 r = info->callbacks->warning 3390 (info, 3391 _("R_FRV_GOTTLSOFFLO" 3392 " not applied to a setlo or setlos instruction"), 3393 name, input_bfd, input_section, rel->r_offset); 3394 return FALSE; 3395 } 3396 3397 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, 3398 relocation + rel->r_addend) 3399 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3400 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) 3401 { 3402 /* Replace setlo/setlos with a nop. Preserve the 3403 packing bit. */ 3404 insn &= (unsigned long)0x80000000; 3405 insn |= (unsigned long)0x00880000; 3406 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3407 3408 /* Nothing to relocate. */ 3409 continue; 3410 } 3411 3412 break; 3413 3414 case R_FRV_TLSOFF_RELAX: 3415 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3416 3417 /* Is this an ld instruction? */ 3418 if ((insn & (unsigned long)0x01fc0fc0) != 0x00080100) 3419 { 3420 r = info->callbacks->warning 3421 (info, 3422 _("R_FRV_TLSOFF_RELAX not applied to an ld instruction"), 3423 name, input_bfd, input_section, rel->r_offset); 3424 return FALSE; 3425 } 3426 3427 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, 3428 relocation + rel->r_addend)) 3429 { 3430 /* Replace ld #gottlsoff(symbol+offset)@(grB, grA), grC 3431 with setlos #tlsmofflo(symbol+offset), grC. 3432 Preserve the packing bit. */ 3433 insn &= (unsigned long)0xfe000000; 3434 insn |= (unsigned long)0x00fc0000; 3435 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3436 3437 r_type = R_FRV_TLSMOFFLO; 3438 howto = elf32_frv_howto_table + r_type; 3439 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3440 } 3441 3442 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) 3443 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry)) 3444 { 3445 /* Replace ld #tlsoff(symbol+offset)@(grB, grA), grC 3446 with ldi @(grB, #gottlsoff12(symbol+offset), grC. 3447 Preserve the packing bit. */ 3448 insn = (insn & (unsigned long)0xfe03f000) 3449 | (unsigned long)0x00c80000;; 3450 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3451 3452 r_type = R_FRV_GOTTLSOFF12; 3453 howto = elf32_frv_howto_table + r_type; 3454 rel->r_info = ELF32_R_INFO (r_symndx, r_type); 3455 } 3456 3457 break; 3458 3459 case R_FRV_TLSMOFFHI: 3460 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3461 3462 /* Is this a sethi instruction? */ 3463 if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) 3464 { 3465 r = info->callbacks->warning 3466 (info, 3467 _("R_FRV_TLSMOFFHI not applied to a sethi instruction"), 3468 name, input_bfd, input_section, rel->r_offset); 3469 return FALSE; 3470 } 3471 3472 if (TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 3473 info)) 3474 { 3475 /* Replace sethi with a nop. Preserve the packing bit. */ 3476 insn &= (unsigned long)0x80000000; 3477 insn |= (unsigned long)0x00880000; 3478 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3479 3480 /* Nothing to relocate. */ 3481 continue; 3482 } 3483 3484 break; 3485 3486 case R_FRV_TLSMOFFLO: 3487 insn = bfd_get_32 (input_bfd, contents + rel->r_offset); 3488 3489 /* Is this a setlo or setlos instruction? */ 3490 if ((insn & (unsigned long)0x01f70000) != 0x00f40000) 3491 { 3492 r = info->callbacks->warning 3493 (info, 3494 _("R_FRV_TLSMOFFLO" 3495 " not applied to a setlo or setlos instruction"), 3496 name, input_bfd, input_section, rel->r_offset); 3497 return FALSE; 3498 } 3499 3500 if (TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, 3501 info)) 3502 /* If the corresponding sethi (if it exists) decayed 3503 to a nop, make sure this becomes (or already is) a 3504 setlos, not setlo. */ 3505 { 3506 insn |= (unsigned long)0x00080000; 3507 bfd_put_32 (input_bfd, insn, contents + rel->r_offset); 3508 } 3509 3510 break; 3511 3512 /* 3513 There's nothing to relax in these: 3514 R_FRV_TLSDESC_VALUE 3515 R_FRV_TLSOFF 3516 R_FRV_TLSMOFF12 3517 R_FRV_TLSMOFFHI 3518 R_FRV_TLSMOFFLO 3519 R_FRV_TLSMOFF 3520 */ 3521 3522 default: 3523 break; 3524 } 3525 3526 switch (r_type) 3527 { 3528 case R_FRV_LABEL24: 3529 check_segment[0] = isec_segment; 3530 if (! IS_FDPIC (output_bfd)) 3531 check_segment[1] = isec_segment; 3532 else if (picrel->plt) 3533 { 3534 relocation = frvfdpic_plt_section (info)->output_section->vma 3535 + frvfdpic_plt_section (info)->output_offset 3536 + picrel->plt_entry; 3537 check_segment[1] = plt_segment; 3538 } 3539 /* We don't want to warn on calls to undefined weak symbols, 3540 as calls to them must be protected by non-NULL tests 3541 anyway, and unprotected calls would invoke undefined 3542 behavior. */ 3543 else if (picrel->symndx == -1 3544 && picrel->d.h->root.type == bfd_link_hash_undefweak) 3545 check_segment[1] = check_segment[0]; 3546 else 3547 check_segment[1] = sec 3548 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3549 : (unsigned)-1; 3550 break; 3551 3552 case R_FRV_GOT12: 3553 case R_FRV_GOTHI: 3554 case R_FRV_GOTLO: 3555 relocation = picrel->got_entry; 3556 check_segment[0] = check_segment[1] = got_segment; 3557 break; 3558 3559 case R_FRV_FUNCDESC_GOT12: 3560 case R_FRV_FUNCDESC_GOTHI: 3561 case R_FRV_FUNCDESC_GOTLO: 3562 relocation = picrel->fdgot_entry; 3563 check_segment[0] = check_segment[1] = got_segment; 3564 break; 3565 3566 case R_FRV_GOTOFFHI: 3567 case R_FRV_GOTOFF12: 3568 case R_FRV_GOTOFFLO: 3569 relocation -= frvfdpic_got_section (info)->output_section->vma 3570 + frvfdpic_got_section (info)->output_offset 3571 + frvfdpic_got_initial_offset (info); 3572 check_segment[0] = got_segment; 3573 check_segment[1] = sec 3574 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3575 : (unsigned)-1; 3576 break; 3577 3578 case R_FRV_FUNCDESC_GOTOFF12: 3579 case R_FRV_FUNCDESC_GOTOFFHI: 3580 case R_FRV_FUNCDESC_GOTOFFLO: 3581 relocation = picrel->fd_entry; 3582 check_segment[0] = check_segment[1] = got_segment; 3583 break; 3584 3585 case R_FRV_FUNCDESC: 3586 { 3587 int dynindx; 3588 bfd_vma addend = rel->r_addend; 3589 3590 if (! (h && h->root.type == bfd_link_hash_undefweak 3591 && FRVFDPIC_SYM_LOCAL (info, h))) 3592 { 3593 /* If the symbol is dynamic and there may be dynamic 3594 symbol resolution because we are or are linked with a 3595 shared library, emit a FUNCDESC relocation such that 3596 the dynamic linker will allocate the function 3597 descriptor. If the symbol needs a non-local function 3598 descriptor but binds locally (e.g., its visibility is 3599 protected, emit a dynamic relocation decayed to 3600 section+offset. */ 3601 if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h) 3602 && FRVFDPIC_SYM_LOCAL (info, h) 3603 && !(info->executable && !info->pie)) 3604 { 3605 dynindx = elf_section_data (h->root.u.def.section 3606 ->output_section)->dynindx; 3607 addend += h->root.u.def.section->output_offset 3608 + h->root.u.def.value; 3609 } 3610 else if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h)) 3611 { 3612 if (addend) 3613 { 3614 info->callbacks->warning 3615 (info, _("R_FRV_FUNCDESC references dynamic symbol with nonzero addend"), 3616 name, input_bfd, input_section, rel->r_offset); 3617 return FALSE; 3618 } 3619 dynindx = h->dynindx; 3620 } 3621 else 3622 { 3623 /* Otherwise, we know we have a private function 3624 descriptor, so reference it directly. */ 3625 BFD_ASSERT (picrel->privfd); 3626 r_type = R_FRV_32; 3627 dynindx = elf_section_data (frvfdpic_got_section (info) 3628 ->output_section)->dynindx; 3629 addend = frvfdpic_got_section (info)->output_offset 3630 + frvfdpic_got_initial_offset (info) 3631 + picrel->fd_entry; 3632 } 3633 3634 /* If there is room for dynamic symbol resolution, emit 3635 the dynamic relocation. However, if we're linking an 3636 executable at a fixed location, we won't have emitted a 3637 dynamic symbol entry for the got section, so idx will 3638 be zero, which means we can and should compute the 3639 address of the private descriptor ourselves. */ 3640 if (info->executable && !info->pie 3641 && (!h || FRVFDPIC_FUNCDESC_LOCAL (info, h))) 3642 { 3643 addend += frvfdpic_got_section (info)->output_section->vma; 3644 if ((bfd_get_section_flags (output_bfd, 3645 input_section->output_section) 3646 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 3647 { 3648 if (_frvfdpic_osec_readonly_p (output_bfd, 3649 input_section 3650 ->output_section)) 3651 { 3652 info->callbacks->warning 3653 (info, 3654 _("cannot emit fixups in read-only section"), 3655 name, input_bfd, input_section, rel->r_offset); 3656 return FALSE; 3657 } 3658 _frvfdpic_add_rofixup (output_bfd, 3659 frvfdpic_gotfixup_section 3660 (info), 3661 _bfd_elf_section_offset 3662 (output_bfd, info, 3663 input_section, rel->r_offset) 3664 + input_section 3665 ->output_section->vma 3666 + input_section->output_offset, 3667 picrel); 3668 } 3669 } 3670 else if ((bfd_get_section_flags (output_bfd, 3671 input_section->output_section) 3672 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 3673 { 3674 if (_frvfdpic_osec_readonly_p (output_bfd, 3675 input_section 3676 ->output_section)) 3677 { 3678 info->callbacks->warning 3679 (info, 3680 _("cannot emit dynamic relocations in read-only section"), 3681 name, input_bfd, input_section, rel->r_offset); 3682 return FALSE; 3683 } 3684 _frvfdpic_add_dyn_reloc (output_bfd, 3685 frvfdpic_gotrel_section (info), 3686 _bfd_elf_section_offset 3687 (output_bfd, info, 3688 input_section, rel->r_offset) 3689 + input_section 3690 ->output_section->vma 3691 + input_section->output_offset, 3692 r_type, dynindx, addend, picrel); 3693 } 3694 else 3695 addend += frvfdpic_got_section (info)->output_section->vma; 3696 } 3697 3698 /* We want the addend in-place because dynamic 3699 relocations are REL. Setting relocation to it should 3700 arrange for it to be installed. */ 3701 relocation = addend - rel->r_addend; 3702 } 3703 check_segment[0] = check_segment[1] = got_segment; 3704 break; 3705 3706 case R_FRV_32: 3707 if (! IS_FDPIC (output_bfd)) 3708 { 3709 check_segment[0] = check_segment[1] = -1; 3710 break; 3711 } 3712 /* Fall through. */ 3713 case R_FRV_FUNCDESC_VALUE: 3714 { 3715 int dynindx; 3716 bfd_vma addend = rel->r_addend; 3717 3718 /* If the symbol is dynamic but binds locally, use 3719 section+offset. */ 3720 if (h && ! FRVFDPIC_SYM_LOCAL (info, h)) 3721 { 3722 if (addend && r_type == R_FRV_FUNCDESC_VALUE) 3723 { 3724 info->callbacks->warning 3725 (info, _("R_FRV_FUNCDESC_VALUE references dynamic symbol with nonzero addend"), 3726 name, input_bfd, input_section, rel->r_offset); 3727 return FALSE; 3728 } 3729 dynindx = h->dynindx; 3730 } 3731 else 3732 { 3733 if (h) 3734 addend += h->root.u.def.value; 3735 else 3736 addend += sym->st_value; 3737 if (osec) 3738 addend += osec->output_offset; 3739 if (osec && osec->output_section 3740 && ! bfd_is_abs_section (osec->output_section) 3741 && ! bfd_is_und_section (osec->output_section)) 3742 dynindx = elf_section_data (osec->output_section)->dynindx; 3743 else 3744 dynindx = 0; 3745 } 3746 3747 /* If we're linking an executable at a fixed address, we 3748 can omit the dynamic relocation as long as the symbol 3749 is defined in the current link unit (which is implied 3750 by its output section not being NULL). */ 3751 if (info->executable && !info->pie 3752 && (!h || FRVFDPIC_SYM_LOCAL (info, h))) 3753 { 3754 if (osec) 3755 addend += osec->output_section->vma; 3756 if (IS_FDPIC (input_bfd) 3757 && (bfd_get_section_flags (output_bfd, 3758 input_section->output_section) 3759 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 3760 { 3761 if (_frvfdpic_osec_readonly_p (output_bfd, 3762 input_section 3763 ->output_section)) 3764 { 3765 info->callbacks->warning 3766 (info, 3767 _("cannot emit fixups in read-only section"), 3768 name, input_bfd, input_section, rel->r_offset); 3769 return FALSE; 3770 } 3771 if (!h || h->root.type != bfd_link_hash_undefweak) 3772 { 3773 _frvfdpic_add_rofixup (output_bfd, 3774 frvfdpic_gotfixup_section 3775 (info), 3776 _bfd_elf_section_offset 3777 (output_bfd, info, 3778 input_section, rel->r_offset) 3779 + input_section 3780 ->output_section->vma 3781 + input_section->output_offset, 3782 picrel); 3783 if (r_type == R_FRV_FUNCDESC_VALUE) 3784 _frvfdpic_add_rofixup 3785 (output_bfd, 3786 frvfdpic_gotfixup_section (info), 3787 _bfd_elf_section_offset 3788 (output_bfd, info, 3789 input_section, rel->r_offset) 3790 + input_section->output_section->vma 3791 + input_section->output_offset + 4, picrel); 3792 } 3793 } 3794 } 3795 else 3796 { 3797 if ((bfd_get_section_flags (output_bfd, 3798 input_section->output_section) 3799 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 3800 { 3801 if (_frvfdpic_osec_readonly_p (output_bfd, 3802 input_section 3803 ->output_section)) 3804 { 3805 info->callbacks->warning 3806 (info, 3807 _("cannot emit dynamic relocations in read-only section"), 3808 name, input_bfd, input_section, rel->r_offset); 3809 return FALSE; 3810 } 3811 _frvfdpic_add_dyn_reloc (output_bfd, 3812 frvfdpic_gotrel_section (info), 3813 _bfd_elf_section_offset 3814 (output_bfd, info, 3815 input_section, rel->r_offset) 3816 + input_section 3817 ->output_section->vma 3818 + input_section->output_offset, 3819 r_type, dynindx, addend, picrel); 3820 } 3821 else if (osec) 3822 addend += osec->output_section->vma; 3823 /* We want the addend in-place because dynamic 3824 relocations are REL. Setting relocation to it 3825 should arrange for it to be installed. */ 3826 relocation = addend - rel->r_addend; 3827 } 3828 3829 if (r_type == R_FRV_FUNCDESC_VALUE) 3830 { 3831 /* If we've omitted the dynamic relocation, just emit 3832 the fixed addresses of the symbol and of the local 3833 GOT base offset. */ 3834 if (info->executable && !info->pie 3835 && (!h || FRVFDPIC_SYM_LOCAL (info, h))) 3836 bfd_put_32 (output_bfd, 3837 frvfdpic_got_section (info)->output_section->vma 3838 + frvfdpic_got_section (info)->output_offset 3839 + frvfdpic_got_initial_offset (info), 3840 contents + rel->r_offset + 4); 3841 else 3842 /* A function descriptor used for lazy or local 3843 resolving is initialized such that its high word 3844 contains the output section index in which the 3845 PLT entries are located, and the low word 3846 contains the offset of the lazy PLT entry entry 3847 point into that section. */ 3848 bfd_put_32 (output_bfd, 3849 h && ! FRVFDPIC_SYM_LOCAL (info, h) 3850 ? 0 3851 : _frvfdpic_osec_to_segment (output_bfd, 3852 sec 3853 ->output_section), 3854 contents + rel->r_offset + 4); 3855 } 3856 } 3857 check_segment[0] = check_segment[1] = got_segment; 3858 break; 3859 3860 case R_FRV_GPREL12: 3861 case R_FRV_GPRELU12: 3862 case R_FRV_GPREL32: 3863 case R_FRV_GPRELHI: 3864 case R_FRV_GPRELLO: 3865 check_segment[0] = gprel_segment; 3866 check_segment[1] = sec 3867 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3868 : (unsigned)-1; 3869 break; 3870 3871 case R_FRV_GETTLSOFF: 3872 relocation = frvfdpic_plt_section (info)->output_section->vma 3873 + frvfdpic_plt_section (info)->output_offset 3874 + picrel->tlsplt_entry; 3875 BFD_ASSERT (picrel->tlsplt_entry != (bfd_vma)-1 3876 && picrel->tlsdesc_entry); 3877 check_segment[0] = isec_segment; 3878 check_segment[1] = plt_segment; 3879 break; 3880 3881 case R_FRV_GOTTLSDESC12: 3882 case R_FRV_GOTTLSDESCHI: 3883 case R_FRV_GOTTLSDESCLO: 3884 BFD_ASSERT (picrel->tlsdesc_entry); 3885 relocation = picrel->tlsdesc_entry; 3886 check_segment[0] = tls_segment; 3887 check_segment[1] = sec 3888 && ! bfd_is_abs_section (sec) 3889 && ! bfd_is_und_section (sec) 3890 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3891 : tls_segment; 3892 break; 3893 3894 case R_FRV_TLSMOFF12: 3895 case R_FRV_TLSMOFFHI: 3896 case R_FRV_TLSMOFFLO: 3897 case R_FRV_TLSMOFF: 3898 check_segment[0] = tls_segment; 3899 if (! sec) 3900 check_segment[1] = -1; 3901 else if (bfd_is_abs_section (sec) 3902 || bfd_is_und_section (sec)) 3903 { 3904 relocation = 0; 3905 check_segment[1] = tls_segment; 3906 } 3907 else if (sec->output_section) 3908 { 3909 relocation -= tls_biased_base (info); 3910 check_segment[1] = 3911 _frvfdpic_osec_to_segment (output_bfd, sec->output_section); 3912 } 3913 else 3914 check_segment[1] = -1; 3915 break; 3916 3917 case R_FRV_GOTTLSOFF12: 3918 case R_FRV_GOTTLSOFFHI: 3919 case R_FRV_GOTTLSOFFLO: 3920 BFD_ASSERT (picrel->tlsoff_entry); 3921 relocation = picrel->tlsoff_entry; 3922 check_segment[0] = tls_segment; 3923 check_segment[1] = sec 3924 && ! bfd_is_abs_section (sec) 3925 && ! bfd_is_und_section (sec) 3926 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3927 : tls_segment; 3928 break; 3929 3930 case R_FRV_TLSDESC_VALUE: 3931 case R_FRV_TLSOFF: 3932 /* These shouldn't be present in input object files. */ 3933 check_segment[0] = check_segment[1] = isec_segment; 3934 break; 3935 3936 case R_FRV_TLSDESC_RELAX: 3937 case R_FRV_GETTLSOFF_RELAX: 3938 case R_FRV_TLSOFF_RELAX: 3939 /* These are just annotations for relaxation, nothing to do 3940 here. */ 3941 continue; 3942 3943 default: 3944 check_segment[0] = isec_segment; 3945 check_segment[1] = sec 3946 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 3947 : (unsigned)-1; 3948 break; 3949 } 3950 3951 if (check_segment[0] != check_segment[1] && IS_FDPIC (output_bfd)) 3952 { 3953 /* If you take this out, remove the #error from fdpic-static-6.d 3954 in the ld testsuite. */ 3955 /* This helps catch problems in GCC while we can't do more 3956 than static linking. The idea is to test whether the 3957 input file basename is crt0.o only once. */ 3958 if (silence_segment_error == 1) 3959 silence_segment_error = 3960 (strlen (input_bfd->filename) == 6 3961 && strcmp (input_bfd->filename, "crt0.o") == 0) 3962 || (strlen (input_bfd->filename) > 6 3963 && strcmp (input_bfd->filename 3964 + strlen (input_bfd->filename) - 7, 3965 "/crt0.o") == 0) 3966 ? -1 : 0; 3967 if (!silence_segment_error 3968 /* We don't want duplicate errors for undefined 3969 symbols. */ 3970 && !(picrel && picrel->symndx == -1 3971 && picrel->d.h->root.type == bfd_link_hash_undefined)) 3972 { 3973 if (info->shared || info->pie) 3974 (*_bfd_error_handler) 3975 (_("%B(%A+0x%lx): reloc against `%s': %s"), 3976 input_bfd, input_section, (long)rel->r_offset, name, 3977 _("relocation references a different segment")); 3978 else 3979 info->callbacks->warning 3980 (info, 3981 _("relocation references a different segment"), 3982 name, input_bfd, input_section, rel->r_offset); 3983 } 3984 if (!silence_segment_error && (info->shared || info->pie)) 3985 return FALSE; 3986 elf_elfheader (output_bfd)->e_flags |= EF_FRV_PIC; 3987 } 3988 3989 switch (r_type) 3990 { 3991 case R_FRV_GOTOFFHI: 3992 case R_FRV_TLSMOFFHI: 3993 /* We need the addend to be applied before we shift the 3994 value right. */ 3995 relocation += rel->r_addend; 3996 /* Fall through. */ 3997 case R_FRV_GOTHI: 3998 case R_FRV_FUNCDESC_GOTHI: 3999 case R_FRV_FUNCDESC_GOTOFFHI: 4000 case R_FRV_GOTTLSOFFHI: 4001 case R_FRV_GOTTLSDESCHI: 4002 relocation >>= 16; 4003 /* Fall through. */ 4004 4005 case R_FRV_GOTLO: 4006 case R_FRV_FUNCDESC_GOTLO: 4007 case R_FRV_GOTOFFLO: 4008 case R_FRV_FUNCDESC_GOTOFFLO: 4009 case R_FRV_GOTTLSOFFLO: 4010 case R_FRV_GOTTLSDESCLO: 4011 case R_FRV_TLSMOFFLO: 4012 relocation &= 0xffff; 4013 break; 4014 4015 default: 4016 break; 4017 } 4018 4019 switch (r_type) 4020 { 4021 case R_FRV_LABEL24: 4022 if (! IS_FDPIC (output_bfd) || ! picrel->plt) 4023 break; 4024 /* Fall through. */ 4025 4026 /* When referencing a GOT entry, a function descriptor or a 4027 PLT, we don't want the addend to apply to the reference, 4028 but rather to the referenced symbol. The actual entry 4029 will have already been created taking the addend into 4030 account, so cancel it out here. */ 4031 case R_FRV_GOT12: 4032 case R_FRV_GOTHI: 4033 case R_FRV_GOTLO: 4034 case R_FRV_FUNCDESC_GOT12: 4035 case R_FRV_FUNCDESC_GOTHI: 4036 case R_FRV_FUNCDESC_GOTLO: 4037 case R_FRV_FUNCDESC_GOTOFF12: 4038 case R_FRV_FUNCDESC_GOTOFFHI: 4039 case R_FRV_FUNCDESC_GOTOFFLO: 4040 case R_FRV_GETTLSOFF: 4041 case R_FRV_GOTTLSDESC12: 4042 case R_FRV_GOTTLSDESCHI: 4043 case R_FRV_GOTTLSDESCLO: 4044 case R_FRV_GOTTLSOFF12: 4045 case R_FRV_GOTTLSOFFHI: 4046 case R_FRV_GOTTLSOFFLO: 4047 /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF12 4048 here, since we do want to apply the addend to the others. 4049 Note that we've applied the addend to GOTOFFHI before we 4050 shifted it right. */ 4051 case R_FRV_GOTOFFHI: 4052 case R_FRV_TLSMOFFHI: 4053 relocation -= rel->r_addend; 4054 break; 4055 4056 default: 4057 break; 4058 } 4059 4060 if (r_type == R_FRV_HI16) 4061 r = elf32_frv_relocate_hi16 (input_bfd, rel, contents, relocation); 4062 4063 else if (r_type == R_FRV_LO16) 4064 r = elf32_frv_relocate_lo16 (input_bfd, rel, contents, relocation); 4065 4066 else if (r_type == R_FRV_LABEL24 || r_type == R_FRV_GETTLSOFF) 4067 r = elf32_frv_relocate_label24 (input_bfd, input_section, rel, 4068 contents, relocation); 4069 4070 else if (r_type == R_FRV_GPREL12) 4071 r = elf32_frv_relocate_gprel12 (info, input_bfd, input_section, rel, 4072 contents, relocation); 4073 4074 else if (r_type == R_FRV_GPRELU12) 4075 r = elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, rel, 4076 contents, relocation); 4077 4078 else if (r_type == R_FRV_GPRELLO) 4079 r = elf32_frv_relocate_gprello (info, input_bfd, input_section, rel, 4080 contents, relocation); 4081 4082 else if (r_type == R_FRV_GPRELHI) 4083 r = elf32_frv_relocate_gprelhi (info, input_bfd, input_section, rel, 4084 contents, relocation); 4085 4086 else if (r_type == R_FRV_TLSOFF 4087 || r_type == R_FRV_TLSDESC_VALUE) 4088 r = bfd_reloc_notsupported; 4089 4090 else 4091 r = frv_final_link_relocate (howto, input_bfd, input_section, contents, 4092 rel, relocation); 4093 4094 if (r != bfd_reloc_ok) 4095 { 4096 const char * msg = (const char *) NULL; 4097 4098 switch (r) 4099 { 4100 case bfd_reloc_overflow: 4101 r = info->callbacks->reloc_overflow 4102 (info, (h ? &h->root : NULL), name, howto->name, 4103 (bfd_vma) 0, input_bfd, input_section, rel->r_offset); 4104 break; 4105 4106 case bfd_reloc_undefined: 4107 r = info->callbacks->undefined_symbol 4108 (info, name, input_bfd, input_section, rel->r_offset, TRUE); 4109 break; 4110 4111 case bfd_reloc_outofrange: 4112 msg = _("internal error: out of range error"); 4113 break; 4114 4115 case bfd_reloc_notsupported: 4116 msg = _("internal error: unsupported relocation error"); 4117 break; 4118 4119 case bfd_reloc_dangerous: 4120 msg = _("internal error: dangerous relocation"); 4121 break; 4122 4123 default: 4124 msg = _("internal error: unknown error"); 4125 break; 4126 } 4127 4128 if (msg) 4129 { 4130 (*_bfd_error_handler) 4131 (_("%B(%A+0x%lx): reloc against `%s': %s"), 4132 input_bfd, input_section, (long)rel->r_offset, name, msg); 4133 return FALSE; 4134 } 4135 4136 if (! r) 4137 return FALSE; 4138 } 4139 } 4140 4141 return TRUE; 4142} 4143 4144/* Return the section that should be marked against GC for a given 4145 relocation. */ 4146 4147static asection * 4148elf32_frv_gc_mark_hook (sec, info, rel, h, sym) 4149 asection *sec; 4150 struct bfd_link_info *info ATTRIBUTE_UNUSED; 4151 Elf_Internal_Rela *rel; 4152 struct elf_link_hash_entry *h; 4153 Elf_Internal_Sym *sym; 4154{ 4155 if (h != NULL) 4156 { 4157 switch (ELF32_R_TYPE (rel->r_info)) 4158 { 4159 case R_FRV_GNU_VTINHERIT: 4160 case R_FRV_GNU_VTENTRY: 4161 break; 4162 4163 default: 4164 switch (h->root.type) 4165 { 4166 default: 4167 break; 4168 4169 case bfd_link_hash_defined: 4170 case bfd_link_hash_defweak: 4171 return h->root.u.def.section; 4172 4173 case bfd_link_hash_common: 4174 return h->root.u.c.p->section; 4175 } 4176 } 4177 } 4178 else 4179 return bfd_section_from_elf_index (sec->owner, sym->st_shndx); 4180 4181 return NULL; 4182} 4183 4184/* Update the got entry reference counts for the section being removed. */ 4185 4186static bfd_boolean 4187elf32_frv_gc_sweep_hook (abfd, info, sec, relocs) 4188 bfd *abfd ATTRIBUTE_UNUSED; 4189 struct bfd_link_info *info ATTRIBUTE_UNUSED; 4190 asection *sec ATTRIBUTE_UNUSED; 4191 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED; 4192{ 4193 return TRUE; 4194} 4195 4196 4197/* Hook called by the linker routine which adds symbols from an object 4198 file. We use it to put .comm items in .scomm, and not .comm. */ 4199 4200static bfd_boolean 4201elf32_frv_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) 4202 bfd *abfd; 4203 struct bfd_link_info *info; 4204 Elf_Internal_Sym *sym; 4205 const char **namep ATTRIBUTE_UNUSED; 4206 flagword *flagsp ATTRIBUTE_UNUSED; 4207 asection **secp; 4208 bfd_vma *valp; 4209{ 4210 if (sym->st_shndx == SHN_COMMON 4211 && !info->relocatable 4212 && (int)sym->st_size <= (int)bfd_get_gp_size (abfd)) 4213 { 4214 /* Common symbols less than or equal to -G nn bytes are 4215 automatically put into .sbss. */ 4216 4217 asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); 4218 4219 if (scomm == NULL) 4220 { 4221 scomm = bfd_make_section_with_flags (abfd, ".scommon", 4222 (SEC_ALLOC 4223 | SEC_IS_COMMON 4224 | SEC_LINKER_CREATED)); 4225 if (scomm == NULL) 4226 return FALSE; 4227 } 4228 4229 *secp = scomm; 4230 *valp = sym->st_size; 4231 } 4232 4233 return TRUE; 4234} 4235 4236/* We need dynamic symbols for every section, since segments can 4237 relocate independently. */ 4238static bfd_boolean 4239_frvfdpic_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED, 4240 struct bfd_link_info *info 4241 ATTRIBUTE_UNUSED, 4242 asection *p ATTRIBUTE_UNUSED) 4243{ 4244 switch (elf_section_data (p)->this_hdr.sh_type) 4245 { 4246 case SHT_PROGBITS: 4247 case SHT_NOBITS: 4248 /* If sh_type is yet undecided, assume it could be 4249 SHT_PROGBITS/SHT_NOBITS. */ 4250 case SHT_NULL: 4251 return FALSE; 4252 4253 /* There shouldn't be section relative relocations 4254 against any other section. */ 4255 default: 4256 return TRUE; 4257 } 4258} 4259 4260/* Create a .got section, as well as its additional info field. This 4261 is almost entirely copied from 4262 elflink.c:_bfd_elf_create_got_section(). */ 4263 4264static bfd_boolean 4265_frv_create_got_section (bfd *abfd, struct bfd_link_info *info) 4266{ 4267 flagword flags, pltflags; 4268 asection *s; 4269 struct elf_link_hash_entry *h; 4270 struct bfd_link_hash_entry *bh; 4271 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 4272 int ptralign; 4273 int offset; 4274 4275 /* This function may be called more than once. */ 4276 s = bfd_get_section_by_name (abfd, ".got"); 4277 if (s != NULL && (s->flags & SEC_LINKER_CREATED) != 0) 4278 return TRUE; 4279 4280 /* Machine specific: although pointers are 32-bits wide, we want the 4281 GOT to be aligned to a 64-bit boundary, such that function 4282 descriptors in it can be accessed with 64-bit loads and 4283 stores. */ 4284 ptralign = 3; 4285 4286 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 4287 | SEC_LINKER_CREATED); 4288 pltflags = flags; 4289 4290 s = bfd_make_section_with_flags (abfd, ".got", flags); 4291 if (s == NULL 4292 || !bfd_set_section_alignment (abfd, s, ptralign)) 4293 return FALSE; 4294 4295 if (bed->want_got_plt) 4296 { 4297 s = bfd_make_section_with_flags (abfd, ".got.plt", flags); 4298 if (s == NULL 4299 || !bfd_set_section_alignment (abfd, s, ptralign)) 4300 return FALSE; 4301 } 4302 4303 if (bed->want_got_sym) 4304 { 4305 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got 4306 (or .got.plt) section. We don't do this in the linker script 4307 because we don't want to define the symbol if we are not creating 4308 a global offset table. */ 4309 h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_"); 4310 elf_hash_table (info)->hgot = h; 4311 if (h == NULL) 4312 return FALSE; 4313 4314 /* Machine-specific: we want the symbol for executables as 4315 well. */ 4316 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 4317 return FALSE; 4318 } 4319 4320 /* The first bit of the global offset table is the header. */ 4321 s->size += bed->got_header_size; 4322 4323 /* This is the machine-specific part. Create and initialize section 4324 data for the got. */ 4325 if (IS_FDPIC (abfd)) 4326 { 4327 frvfdpic_got_section (info) = s; 4328 frvfdpic_relocs_info (info) = htab_try_create (1, 4329 frvfdpic_relocs_info_hash, 4330 frvfdpic_relocs_info_eq, 4331 (htab_del) NULL); 4332 if (! frvfdpic_relocs_info (info)) 4333 return FALSE; 4334 4335 s = bfd_make_section_with_flags (abfd, ".rel.got", 4336 (flags | SEC_READONLY)); 4337 if (s == NULL 4338 || ! bfd_set_section_alignment (abfd, s, 2)) 4339 return FALSE; 4340 4341 frvfdpic_gotrel_section (info) = s; 4342 4343 /* Machine-specific. */ 4344 s = bfd_make_section_with_flags (abfd, ".rofixup", 4345 (flags | SEC_READONLY)); 4346 if (s == NULL 4347 || ! bfd_set_section_alignment (abfd, s, 2)) 4348 return FALSE; 4349 4350 frvfdpic_gotfixup_section (info) = s; 4351 offset = -2048; 4352 flags = BSF_GLOBAL; 4353 } 4354 else 4355 { 4356 offset = 2048; 4357 flags = BSF_GLOBAL | BSF_WEAK; 4358 } 4359 4360 /* Define _gp in .rofixup, for FDPIC, or .got otherwise. If it 4361 turns out that we're linking with a different linker script, the 4362 linker script will override it. */ 4363 bh = NULL; 4364 if (!(_bfd_generic_link_add_one_symbol 4365 (info, abfd, "_gp", flags, s, offset, (const char *) NULL, FALSE, 4366 bed->collect, &bh))) 4367 return FALSE; 4368 h = (struct elf_link_hash_entry *) bh; 4369 h->def_regular = 1; 4370 h->type = STT_OBJECT; 4371 /* h->other = STV_HIDDEN; */ /* Should we? */ 4372 4373 /* Machine-specific: we want the symbol for executables as well. */ 4374 if (IS_FDPIC (abfd) && ! bfd_elf_link_record_dynamic_symbol (info, h)) 4375 return FALSE; 4376 4377 if (!IS_FDPIC (abfd)) 4378 return TRUE; 4379 4380 /* FDPIC supports Thread Local Storage, and this may require a 4381 procedure linkage table for TLS PLT entries. */ 4382 4383 /* This is mostly copied from 4384 elflink.c:_bfd_elf_create_dynamic_sections(). */ 4385 4386 flags = pltflags; 4387 pltflags |= SEC_CODE; 4388 if (bed->plt_not_loaded) 4389 pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS); 4390 if (bed->plt_readonly) 4391 pltflags |= SEC_READONLY; 4392 4393 s = bfd_make_section_with_flags (abfd, ".plt", pltflags); 4394 if (s == NULL 4395 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) 4396 return FALSE; 4397 /* FRV-specific: remember it. */ 4398 frvfdpic_plt_section (info) = s; 4399 4400 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the 4401 .plt section. */ 4402 if (bed->want_plt_sym) 4403 { 4404 h = _bfd_elf_define_linkage_sym (abfd, info, s, 4405 "_PROCEDURE_LINKAGE_TABLE_"); 4406 elf_hash_table (info)->hplt = h; 4407 if (h == NULL) 4408 return FALSE; 4409 } 4410 4411 /* FRV-specific: we want rel relocations for the plt. */ 4412 s = bfd_make_section_with_flags (abfd, ".rel.plt", 4413 flags | SEC_READONLY); 4414 if (s == NULL 4415 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 4416 return FALSE; 4417 /* FRV-specific: remember it. */ 4418 frvfdpic_pltrel_section (info) = s; 4419 4420 return TRUE; 4421} 4422 4423/* Make sure the got and plt sections exist, and that our pointers in 4424 the link hash table point to them. */ 4425 4426static bfd_boolean 4427elf32_frvfdpic_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 4428{ 4429 /* This is mostly copied from 4430 elflink.c:_bfd_elf_create_dynamic_sections(). */ 4431 flagword flags; 4432 asection *s; 4433 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 4434 4435 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 4436 | SEC_LINKER_CREATED); 4437 4438 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and 4439 .rel[a].bss sections. */ 4440 4441 /* FRV-specific: we want to create the GOT and the PLT in the FRV 4442 way. */ 4443 if (! _frv_create_got_section (abfd, info)) 4444 return FALSE; 4445 4446 /* FRV-specific: make sure we created everything we wanted. */ 4447 BFD_ASSERT (frvfdpic_got_section (info) && frvfdpic_gotrel_section (info) 4448 && frvfdpic_gotfixup_section (info) 4449 && frvfdpic_plt_section (info) 4450 && frvfdpic_pltrel_section (info)); 4451 4452 if (bed->want_dynbss) 4453 { 4454 /* The .dynbss section is a place to put symbols which are defined 4455 by dynamic objects, are referenced by regular objects, and are 4456 not functions. We must allocate space for them in the process 4457 image and use a R_*_COPY reloc to tell the dynamic linker to 4458 initialize them at run time. The linker script puts the .dynbss 4459 section into the .bss section of the final image. */ 4460 s = bfd_make_section_with_flags (abfd, ".dynbss", 4461 SEC_ALLOC | SEC_LINKER_CREATED); 4462 if (s == NULL) 4463 return FALSE; 4464 4465 /* The .rel[a].bss section holds copy relocs. This section is not 4466 normally needed. We need to create it here, though, so that the 4467 linker will map it to an output section. We can't just create it 4468 only if we need it, because we will not know whether we need it 4469 until we have seen all the input files, and the first time the 4470 main linker code calls BFD after examining all the input files 4471 (size_dynamic_sections) the input sections have already been 4472 mapped to the output sections. If the section turns out not to 4473 be needed, we can discard it later. We will never need this 4474 section when generating a shared object, since they do not use 4475 copy relocs. */ 4476 if (! info->shared) 4477 { 4478 s = bfd_make_section_with_flags (abfd, 4479 (bed->default_use_rela_p 4480 ? ".rela.bss" : ".rel.bss"), 4481 flags | SEC_READONLY); 4482 if (s == NULL 4483 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 4484 return FALSE; 4485 } 4486 } 4487 4488 return TRUE; 4489} 4490 4491/* Compute the total GOT and PLT size required by each symbol in each 4492 range. Symbols may require up to 4 words in the GOT: an entry 4493 pointing to the symbol, an entry pointing to its function 4494 descriptor, and a private function descriptors taking two 4495 words. */ 4496 4497static void 4498_frvfdpic_count_nontls_entries (struct frvfdpic_relocs_info *entry, 4499 struct _frvfdpic_dynamic_got_info *dinfo) 4500{ 4501 /* Allocate space for a GOT entry pointing to the symbol. */ 4502 if (entry->got12) 4503 dinfo->got12 += 4; 4504 else if (entry->gotlos) 4505 dinfo->gotlos += 4; 4506 else if (entry->gothilo) 4507 dinfo->gothilo += 4; 4508 else 4509 entry->relocs32--; 4510 entry->relocs32++; 4511 4512 /* Allocate space for a GOT entry pointing to the function 4513 descriptor. */ 4514 if (entry->fdgot12) 4515 dinfo->got12 += 4; 4516 else if (entry->fdgotlos) 4517 dinfo->gotlos += 4; 4518 else if (entry->fdgothilo) 4519 dinfo->gothilo += 4; 4520 else 4521 entry->relocsfd--; 4522 entry->relocsfd++; 4523 4524 /* Decide whether we need a PLT entry, a function descriptor in the 4525 GOT, and a lazy PLT entry for this symbol. */ 4526 entry->plt = entry->call 4527 && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) 4528 && elf_hash_table (dinfo->info)->dynamic_sections_created; 4529 entry->privfd = entry->plt 4530 || entry->fdgoff12 || entry->fdgofflos || entry->fdgoffhilo 4531 || ((entry->fd || entry->fdgot12 || entry->fdgotlos || entry->fdgothilo) 4532 && (entry->symndx != -1 4533 || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h))); 4534 entry->lazyplt = entry->privfd 4535 && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) 4536 && ! (dinfo->info->flags & DF_BIND_NOW) 4537 && elf_hash_table (dinfo->info)->dynamic_sections_created; 4538 4539 /* Allocate space for a function descriptor. */ 4540 if (entry->fdgoff12) 4541 dinfo->fd12 += 8; 4542 else if (entry->fdgofflos) 4543 dinfo->fdlos += 8; 4544 else if (entry->privfd && entry->plt) 4545 dinfo->fdplt += 8; 4546 else if (entry->privfd) 4547 dinfo->fdhilo += 8; 4548 else 4549 entry->relocsfdv--; 4550 entry->relocsfdv++; 4551 4552 if (entry->lazyplt) 4553 dinfo->lzplt += 8; 4554} 4555 4556/* Compute the total GOT size required by each TLS symbol in each 4557 range. Symbols may require up to 5 words in the GOT: an entry 4558 holding the TLS offset for the symbol, and an entry with a full TLS 4559 descriptor taking 4 words. */ 4560 4561static void 4562_frvfdpic_count_tls_entries (struct frvfdpic_relocs_info *entry, 4563 struct _frvfdpic_dynamic_got_info *dinfo, 4564 bfd_boolean subtract) 4565{ 4566 const int l = subtract ? -1 : 1; 4567 4568 /* Allocate space for a GOT entry with the TLS offset of the 4569 symbol. */ 4570 if (entry->tlsoff12) 4571 dinfo->got12 += 4 * l; 4572 else if (entry->tlsofflos) 4573 dinfo->gotlos += 4 * l; 4574 else if (entry->tlsoffhilo) 4575 dinfo->gothilo += 4 * l; 4576 else 4577 entry->relocstlsoff -= l; 4578 entry->relocstlsoff += l; 4579 4580 /* If there's any TLSOFF relocation, mark the output file as not 4581 suitable for dlopening. This mark will remain even if we relax 4582 all such relocations, but this is not a problem, since we'll only 4583 do so for executables, and we definitely don't want anyone 4584 dlopening executables. */ 4585 if (entry->relocstlsoff) 4586 dinfo->info->flags |= DF_STATIC_TLS; 4587 4588 /* Allocate space for a TLS descriptor. */ 4589 if (entry->tlsdesc12) 4590 dinfo->tlsd12 += 8 * l; 4591 else if (entry->tlsdesclos) 4592 dinfo->tlsdlos += 8 * l; 4593 else if (entry->tlsplt) 4594 dinfo->tlsdplt += 8 * l; 4595 else if (entry->tlsdeschilo) 4596 dinfo->tlsdhilo += 8 * l; 4597 else 4598 entry->relocstlsd -= l; 4599 entry->relocstlsd += l; 4600} 4601 4602/* Compute the number of dynamic relocations and fixups that a symbol 4603 requires, and add (or subtract) from the grand and per-symbol 4604 totals. */ 4605 4606static void 4607_frvfdpic_count_relocs_fixups (struct frvfdpic_relocs_info *entry, 4608 struct _frvfdpic_dynamic_got_info *dinfo, 4609 bfd_boolean subtract) 4610{ 4611 bfd_vma relocs = 0, fixups = 0, tlsrets = 0; 4612 4613 if (!dinfo->info->executable || dinfo->info->pie) 4614 { 4615 relocs = entry->relocs32 + entry->relocsfd + entry->relocsfdv 4616 + entry->relocstlsd; 4617 4618 /* In the executable, TLS relocations to symbols that bind 4619 locally (including those that resolve to global TLS offsets) 4620 are resolved immediately, without any need for fixups or 4621 dynamic relocations. In shared libraries, however, we must 4622 emit dynamic relocations even for local symbols, because we 4623 don't know the module id the library is going to get at 4624 run-time, nor its TLS base offset. */ 4625 if (!dinfo->info->executable 4626 || (entry->symndx == -1 4627 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))) 4628 relocs += entry->relocstlsoff; 4629 } 4630 else 4631 { 4632 if (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)) 4633 { 4634 if (entry->symndx != -1 4635 || entry->d.h->root.type != bfd_link_hash_undefweak) 4636 fixups += entry->relocs32 + 2 * entry->relocsfdv; 4637 fixups += entry->relocstlsd; 4638 tlsrets += entry->relocstlsd; 4639 } 4640 else 4641 { 4642 relocs += entry->relocs32 + entry->relocsfdv 4643 + entry->relocstlsoff + entry->relocstlsd; 4644 } 4645 4646 if (entry->symndx != -1 4647 || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h)) 4648 { 4649 if (entry->symndx != -1 4650 || entry->d.h->root.type != bfd_link_hash_undefweak) 4651 fixups += entry->relocsfd; 4652 } 4653 else 4654 relocs += entry->relocsfd; 4655 } 4656 4657 if (subtract) 4658 { 4659 relocs = - relocs; 4660 fixups = - fixups; 4661 tlsrets = - tlsrets; 4662 } 4663 4664 entry->dynrelocs += relocs; 4665 entry->fixups += fixups; 4666 dinfo->relocs += relocs; 4667 dinfo->fixups += fixups; 4668 dinfo->tls_ret_refs += tlsrets; 4669} 4670 4671/* Look for opportunities to relax TLS relocations. We can assume 4672 we're linking the main executable or a static-tls library, since 4673 otherwise we wouldn't have got here. When relaxing, we have to 4674 first undo any previous accounting of TLS uses of fixups, dynamic 4675 relocations, GOT and PLT entries. */ 4676 4677static void 4678_frvfdpic_relax_tls_entries (struct frvfdpic_relocs_info *entry, 4679 struct _frvfdpic_dynamic_got_info *dinfo, 4680 bfd_boolean relaxing) 4681{ 4682 bfd_boolean changed = ! relaxing; 4683 4684 BFD_ASSERT (dinfo->info->executable 4685 || (dinfo->info->flags & DF_STATIC_TLS)); 4686 4687 if (entry->tlsdesc12 || entry->tlsdesclos || entry->tlsdeschilo) 4688 { 4689 if (! changed) 4690 { 4691 _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE); 4692 _frvfdpic_count_tls_entries (entry, dinfo, TRUE); 4693 changed = TRUE; 4694 } 4695 4696 /* When linking an executable, we can always decay GOTTLSDESC to 4697 TLSMOFF, if the symbol is local, or GOTTLSOFF, otherwise. 4698 When linking a static-tls shared library, using TLSMOFF is 4699 not an option, but we can still use GOTTLSOFF. When decaying 4700 to GOTTLSOFF, we must keep the GOT entry in range. We know 4701 it has to fit because we'll be trading the 4 words of hte TLS 4702 descriptor for a single word in the same range. */ 4703 if (! dinfo->info->executable 4704 || (entry->symndx == -1 4705 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))) 4706 { 4707 entry->tlsoff12 |= entry->tlsdesc12; 4708 entry->tlsofflos |= entry->tlsdesclos; 4709 entry->tlsoffhilo |= entry->tlsdeschilo; 4710 } 4711 4712 entry->tlsdesc12 = entry->tlsdesclos = entry->tlsdeschilo = 0; 4713 } 4714 4715 /* We can only decay TLSOFFs or call #gettlsoff to TLSMOFF in the 4716 main executable. We have to check whether the symbol's TLSOFF is 4717 in range for a setlos. For symbols with a hash entry, we can 4718 determine exactly what to do; for others locals, we don't have 4719 addresses handy, so we use the size of the TLS section as an 4720 approximation. If we get it wrong, we'll retain a GOT entry 4721 holding the TLS offset (without dynamic relocations or fixups), 4722 but we'll still optimize away the loads from it. Since TLS sizes 4723 are generally very small, it's probably not worth attempting to 4724 do better than this. */ 4725 if ((entry->tlsplt 4726 || entry->tlsoff12 || entry->tlsofflos || entry->tlsoffhilo) 4727 && dinfo->info->executable && relaxing 4728 && ((entry->symndx == -1 4729 && FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) 4730 /* The above may hold for an undefweak TLS symbol, so make 4731 sure we don't have this case before accessing def.value 4732 and def.section. */ 4733 && (entry->d.h->root.type == bfd_link_hash_undefweak 4734 || (bfd_vma)(entry->d.h->root.u.def.value 4735 + (entry->d.h->root.u.def.section 4736 ->output_section->vma) 4737 + entry->d.h->root.u.def.section->output_offset 4738 + entry->addend 4739 - tls_biased_base (dinfo->info) 4740 + 32768) < (bfd_vma)65536)) 4741 || (entry->symndx != -1 4742 && (elf_hash_table (dinfo->info)->tls_sec->size 4743 + abs (entry->addend) < 32768 + FRVFDPIC_TLS_BIAS)))) 4744 { 4745 if (! changed) 4746 { 4747 _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE); 4748 _frvfdpic_count_tls_entries (entry, dinfo, TRUE); 4749 changed = TRUE; 4750 } 4751 4752 entry->tlsplt = 4753 entry->tlsoff12 = entry->tlsofflos = entry->tlsoffhilo = 0; 4754 } 4755 4756 /* We can decay `call #gettlsoff' to a ldi #tlsoff if we already 4757 have a #gottlsoff12 relocation for this entry, or if we can fit 4758 one more in the 12-bit (and 16-bit) ranges. */ 4759 if (entry->tlsplt 4760 && (entry->tlsoff12 4761 || (relaxing 4762 && dinfo->got12 + dinfo->fd12 + dinfo->tlsd12 <= 4096 - 12 - 4 4763 && (dinfo->got12 + dinfo->fd12 + dinfo->tlsd12 4764 + dinfo->gotlos + dinfo->fdlos + dinfo->tlsdlos 4765 <= 65536 - 12 - 4)))) 4766 { 4767 if (! changed) 4768 { 4769 _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE); 4770 _frvfdpic_count_tls_entries (entry, dinfo, TRUE); 4771 changed = TRUE; 4772 } 4773 4774 entry->tlsoff12 = 1; 4775 entry->tlsplt = 0; 4776 } 4777 4778 if (changed) 4779 { 4780 _frvfdpic_count_tls_entries (entry, dinfo, FALSE); 4781 _frvfdpic_count_relocs_fixups (entry, dinfo, FALSE); 4782 } 4783 4784 return; 4785} 4786 4787/* Compute the total GOT and PLT size required by each symbol in each range. * 4788 Symbols may require up to 4 words in the GOT: an entry pointing to 4789 the symbol, an entry pointing to its function descriptor, and a 4790 private function descriptors taking two words. */ 4791 4792static int 4793_frvfdpic_count_got_plt_entries (void **entryp, void *dinfo_) 4794{ 4795 struct frvfdpic_relocs_info *entry = *entryp; 4796 struct _frvfdpic_dynamic_got_info *dinfo = dinfo_; 4797 4798 _frvfdpic_count_nontls_entries (entry, dinfo); 4799 4800 if (dinfo->info->executable || (dinfo->info->flags & DF_STATIC_TLS)) 4801 _frvfdpic_relax_tls_entries (entry, dinfo, FALSE); 4802 else 4803 { 4804 _frvfdpic_count_tls_entries (entry, dinfo, FALSE); 4805 _frvfdpic_count_relocs_fixups (entry, dinfo, FALSE); 4806 } 4807 4808 return 1; 4809} 4810 4811/* Determine the positive and negative ranges to be used by each 4812 offset range in the GOT. FDCUR and CUR, that must be aligned to a 4813 double-word boundary, are the minimum (negative) and maximum 4814 (positive) GOT offsets already used by previous ranges, except for 4815 an ODD entry that may have been left behind. GOT and FD indicate 4816 the size of GOT entries and function descriptors that must be 4817 placed within the range from -WRAP to WRAP. If there's room left, 4818 up to FDPLT bytes should be reserved for additional function 4819 descriptors. */ 4820 4821inline static bfd_signed_vma 4822_frvfdpic_compute_got_alloc_data (struct _frvfdpic_dynamic_got_alloc_data *gad, 4823 bfd_signed_vma fdcur, 4824 bfd_signed_vma odd, 4825 bfd_signed_vma cur, 4826 bfd_vma got, 4827 bfd_vma fd, 4828 bfd_vma fdplt, 4829 bfd_vma tlsd, 4830 bfd_vma tlsdplt, 4831 bfd_vma wrap) 4832{ 4833 bfd_signed_vma wrapmin = -wrap; 4834 const bfd_vma tdescsz = 8; 4835 4836 /* Start at the given initial points. */ 4837 gad->fdcur = fdcur; 4838 gad->cur = cur; 4839 4840 /* If we had an incoming odd word and we have any got entries that 4841 are going to use it, consume it, otherwise leave gad->odd at 4842 zero. We might force gad->odd to zero and return the incoming 4843 odd such that it is used by the next range, but then GOT entries 4844 might appear to be out of order and we wouldn't be able to 4845 shorten the GOT by one word if it turns out to end with an 4846 unpaired GOT entry. */ 4847 if (odd && got) 4848 { 4849 gad->odd = odd; 4850 got -= 4; 4851 odd = 0; 4852 } 4853 else 4854 gad->odd = 0; 4855 4856 /* If we're left with an unpaired GOT entry, compute its location 4857 such that we can return it. Otherwise, if got doesn't require an 4858 odd number of words here, either odd was already zero in the 4859 block above, or it was set to zero because got was non-zero, or 4860 got was already zero. In the latter case, we want the value of 4861 odd to carry over to the return statement, so we don't want to 4862 reset odd unless the condition below is true. */ 4863 if (got & 4) 4864 { 4865 odd = cur + got; 4866 got += 4; 4867 } 4868 4869 /* Compute the tentative boundaries of this range. */ 4870 gad->max = cur + got; 4871 gad->min = fdcur - fd; 4872 gad->fdplt = 0; 4873 4874 /* If function descriptors took too much space, wrap some of them 4875 around. */ 4876 if (gad->min < wrapmin) 4877 { 4878 gad->max += wrapmin - gad->min; 4879 gad->tmin = gad->min = wrapmin; 4880 } 4881 4882 /* If GOT entries took too much space, wrap some of them around. 4883 This may well cause gad->min to become lower than wrapmin. This 4884 will cause a relocation overflow later on, so we don't have to 4885 report it here . */ 4886 if ((bfd_vma) gad->max > wrap) 4887 { 4888 gad->min -= gad->max - wrap; 4889 gad->max = wrap; 4890 } 4891 4892 /* Add TLS descriptors. */ 4893 gad->tmax = gad->max + tlsd; 4894 gad->tmin = gad->min; 4895 gad->tlsdplt = 0; 4896 4897 /* If TLS descriptors took too much space, wrap an integral number 4898 of them around. */ 4899 if ((bfd_vma) gad->tmax > wrap) 4900 { 4901 bfd_vma wrapsize = gad->tmax - wrap; 4902 4903 wrapsize += tdescsz / 2; 4904 wrapsize &= ~ tdescsz / 2; 4905 4906 gad->tmin -= wrapsize; 4907 gad->tmax -= wrapsize; 4908 } 4909 4910 /* If there is space left and we have function descriptors 4911 referenced in PLT entries that could take advantage of shorter 4912 offsets, place them now. */ 4913 if (fdplt && gad->tmin > wrapmin) 4914 { 4915 bfd_vma fds; 4916 4917 if ((bfd_vma) (gad->tmin - wrapmin) < fdplt) 4918 fds = gad->tmin - wrapmin; 4919 else 4920 fds = fdplt; 4921 4922 fdplt -= fds; 4923 gad->min -= fds; 4924 gad->tmin -= fds; 4925 gad->fdplt += fds; 4926 } 4927 4928 /* If there is more space left, try to place some more function 4929 descriptors for PLT entries. */ 4930 if (fdplt && (bfd_vma) gad->tmax < wrap) 4931 { 4932 bfd_vma fds; 4933 4934 if ((bfd_vma) (wrap - gad->tmax) < fdplt) 4935 fds = wrap - gad->tmax; 4936 else 4937 fds = fdplt; 4938 4939 fdplt -= fds; 4940 gad->max += fds; 4941 gad->tmax += fds; 4942 gad->fdplt += fds; 4943 } 4944 4945 /* If there is space left and we have TLS descriptors referenced in 4946 PLT entries that could take advantage of shorter offsets, place 4947 them now. */ 4948 if (tlsdplt && gad->tmin > wrapmin) 4949 { 4950 bfd_vma tlsds; 4951 4952 if ((bfd_vma) (gad->tmin - wrapmin) < tlsdplt) 4953 tlsds = (gad->tmin - wrapmin) & ~ (tdescsz / 2); 4954 else 4955 tlsds = tlsdplt; 4956 4957 tlsdplt -= tlsds; 4958 gad->tmin -= tlsds; 4959 gad->tlsdplt += tlsds; 4960 } 4961 4962 /* If there is more space left, try to place some more TLS 4963 descriptors for PLT entries. Although we could try to fit an 4964 additional TLS descriptor with half of it just before before the 4965 wrap point and another right past the wrap point, this might 4966 cause us to run out of space for the next region, so don't do 4967 it. */ 4968 if (tlsdplt && (bfd_vma) gad->tmax < wrap - tdescsz / 2) 4969 { 4970 bfd_vma tlsds; 4971 4972 if ((bfd_vma) (wrap - gad->tmax) < tlsdplt) 4973 tlsds = (wrap - gad->tmax) & ~ (tdescsz / 2); 4974 else 4975 tlsds = tlsdplt; 4976 4977 tlsdplt -= tlsds; 4978 gad->tmax += tlsds; 4979 gad->tlsdplt += tlsds; 4980 } 4981 4982 /* If odd was initially computed as an offset past the wrap point, 4983 wrap it around. */ 4984 if (odd > gad->max) 4985 odd = gad->min + odd - gad->max; 4986 4987 /* _frvfdpic_get_got_entry() below will always wrap gad->cur if needed 4988 before returning, so do it here too. This guarantees that, 4989 should cur and fdcur meet at the wrap point, they'll both be 4990 equal to min. */ 4991 if (gad->cur == gad->max) 4992 gad->cur = gad->min; 4993 4994 /* Ditto for _frvfdpic_get_tlsdesc_entry(). */ 4995 gad->tcur = gad->max; 4996 if (gad->tcur == gad->tmax) 4997 gad->tcur = gad->tmin; 4998 4999 return odd; 5000} 5001 5002/* Compute the location of the next GOT entry, given the allocation 5003 data for a range. */ 5004 5005inline static bfd_signed_vma 5006_frvfdpic_get_got_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) 5007{ 5008 bfd_signed_vma ret; 5009 5010 if (gad->odd) 5011 { 5012 /* If there was an odd word left behind, use it. */ 5013 ret = gad->odd; 5014 gad->odd = 0; 5015 } 5016 else 5017 { 5018 /* Otherwise, use the word pointed to by cur, reserve the next 5019 as an odd word, and skip to the next pair of words, possibly 5020 wrapping around. */ 5021 ret = gad->cur; 5022 gad->odd = gad->cur + 4; 5023 gad->cur += 8; 5024 if (gad->cur == gad->max) 5025 gad->cur = gad->min; 5026 } 5027 5028 return ret; 5029} 5030 5031/* Compute the location of the next function descriptor entry in the 5032 GOT, given the allocation data for a range. */ 5033 5034inline static bfd_signed_vma 5035_frvfdpic_get_fd_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) 5036{ 5037 /* If we're at the bottom, wrap around, and only then allocate the 5038 next pair of words. */ 5039 if (gad->fdcur == gad->min) 5040 gad->fdcur = gad->max; 5041 return gad->fdcur -= 8; 5042} 5043 5044/* Compute the location of the next TLS descriptor entry in the GOT, 5045 given the allocation data for a range. */ 5046inline static bfd_signed_vma 5047_frvfdpic_get_tlsdesc_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) 5048{ 5049 bfd_signed_vma ret; 5050 5051 ret = gad->tcur; 5052 5053 gad->tcur += 8; 5054 5055 /* If we're at the top of the region, wrap around to the bottom. */ 5056 if (gad->tcur == gad->tmax) 5057 gad->tcur = gad->tmin; 5058 5059 return ret; 5060} 5061 5062/* Assign GOT offsets for every GOT entry and function descriptor. 5063 Doing everything in a single pass is tricky. */ 5064 5065static int 5066_frvfdpic_assign_got_entries (void **entryp, void *info_) 5067{ 5068 struct frvfdpic_relocs_info *entry = *entryp; 5069 struct _frvfdpic_dynamic_got_plt_info *dinfo = info_; 5070 5071 if (entry->got12) 5072 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->got12); 5073 else if (entry->gotlos) 5074 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); 5075 else if (entry->gothilo) 5076 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); 5077 5078 if (entry->fdgot12) 5079 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->got12); 5080 else if (entry->fdgotlos) 5081 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); 5082 else if (entry->fdgothilo) 5083 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); 5084 5085 if (entry->fdgoff12) 5086 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12); 5087 else if (entry->plt && dinfo->got12.fdplt) 5088 { 5089 dinfo->got12.fdplt -= 8; 5090 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12); 5091 } 5092 else if (entry->fdgofflos) 5093 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos); 5094 else if (entry->plt && dinfo->gotlos.fdplt) 5095 { 5096 dinfo->gotlos.fdplt -= 8; 5097 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos); 5098 } 5099 else if (entry->plt) 5100 { 5101 dinfo->gothilo.fdplt -= 8; 5102 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo); 5103 } 5104 else if (entry->privfd) 5105 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo); 5106 5107 if (entry->tlsoff12) 5108 entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->got12); 5109 else if (entry->tlsofflos) 5110 entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); 5111 else if (entry->tlsoffhilo) 5112 entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); 5113 5114 if (entry->tlsdesc12) 5115 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->got12); 5116 else if (entry->tlsplt && dinfo->got12.tlsdplt) 5117 { 5118 dinfo->got12.tlsdplt -= 8; 5119 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->got12); 5120 } 5121 else if (entry->tlsdesclos) 5122 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gotlos); 5123 else if (entry->tlsplt && dinfo->gotlos.tlsdplt) 5124 { 5125 dinfo->gotlos.tlsdplt -= 8; 5126 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gotlos); 5127 } 5128 else if (entry->tlsplt) 5129 { 5130 dinfo->gothilo.tlsdplt -= 8; 5131 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gothilo); 5132 } 5133 else if (entry->tlsdeschilo) 5134 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gothilo); 5135 5136 return 1; 5137} 5138 5139/* Assign GOT offsets to private function descriptors used by PLT 5140 entries (or referenced by 32-bit offsets), as well as PLT entries 5141 and lazy PLT entries. */ 5142 5143static int 5144_frvfdpic_assign_plt_entries (void **entryp, void *info_) 5145{ 5146 struct frvfdpic_relocs_info *entry = *entryp; 5147 struct _frvfdpic_dynamic_got_plt_info *dinfo = info_; 5148 5149 if (entry->privfd) 5150 BFD_ASSERT (entry->fd_entry); 5151 5152 if (entry->plt) 5153 { 5154 int size; 5155 5156 /* We use the section's raw size to mark the location of the 5157 next PLT entry. */ 5158 entry->plt_entry = frvfdpic_plt_section (dinfo->g.info)->size; 5159 5160 /* Figure out the length of this PLT entry based on the 5161 addressing mode we need to reach the function descriptor. */ 5162 BFD_ASSERT (entry->fd_entry); 5163 if (entry->fd_entry >= -(1 << (12 - 1)) 5164 && entry->fd_entry < (1 << (12 - 1))) 5165 size = 8; 5166 else if (entry->fd_entry >= -(1 << (16 - 1)) 5167 && entry->fd_entry < (1 << (16 - 1))) 5168 size = 12; 5169 else 5170 size = 16; 5171 5172 frvfdpic_plt_section (dinfo->g.info)->size += size; 5173 } 5174 5175 if (entry->lazyplt) 5176 { 5177 entry->lzplt_entry = dinfo->g.lzplt; 5178 dinfo->g.lzplt += 8; 5179 /* If this entry is the one that gets the resolver stub, account 5180 for the additional instruction. */ 5181 if (entry->lzplt_entry % FRVFDPIC_LZPLT_BLOCK_SIZE 5182 == FRVFDPIC_LZPLT_RESOLV_LOC) 5183 dinfo->g.lzplt += 4; 5184 } 5185 5186 if (entry->tlsplt) 5187 { 5188 int size; 5189 5190 entry->tlsplt_entry 5191 = frvfdpic_plt_section (dinfo->g.info)->size; 5192 5193 if (dinfo->g.info->executable 5194 && (entry->symndx != -1 5195 || FRVFDPIC_SYM_LOCAL (dinfo->g.info, entry->d.h))) 5196 { 5197 if ((bfd_signed_vma)entry->addend >= -(1 << (16 - 1)) 5198 /* FIXME: here we use the size of the TLS section 5199 as an upper bound for the value of the TLS 5200 symbol, because we may not know the exact value 5201 yet. If we get it wrong, we'll just waste a 5202 word in the PLT, and we should never get even 5203 close to 32 KiB of TLS anyway. */ 5204 && elf_hash_table (dinfo->g.info)->tls_sec 5205 && (elf_hash_table (dinfo->g.info)->tls_sec->size 5206 + (bfd_signed_vma)(entry->addend) <= (1 << (16 - 1)))) 5207 size = 8; 5208 else 5209 size = 12; 5210 } 5211 else if (entry->tlsoff_entry) 5212 { 5213 if (entry->tlsoff_entry >= -(1 << (12 - 1)) 5214 && entry->tlsoff_entry < (1 << (12 - 1))) 5215 size = 8; 5216 else if (entry->tlsoff_entry >= -(1 << (16 - 1)) 5217 && entry->tlsoff_entry < (1 << (16 - 1))) 5218 size = 12; 5219 else 5220 size = 16; 5221 } 5222 else 5223 { 5224 BFD_ASSERT (entry->tlsdesc_entry); 5225 5226 if (entry->tlsdesc_entry >= -(1 << (12 - 1)) 5227 && entry->tlsdesc_entry < (1 << (12 - 1))) 5228 size = 8; 5229 else if (entry->tlsdesc_entry >= -(1 << (16 - 1)) 5230 && entry->tlsdesc_entry < (1 << (16 - 1))) 5231 size = 12; 5232 else 5233 size = 16; 5234 } 5235 5236 frvfdpic_plt_section (dinfo->g.info)->size += size; 5237 } 5238 5239 return 1; 5240} 5241 5242/* Cancel out any effects of calling _frvfdpic_assign_got_entries and 5243 _frvfdpic_assign_plt_entries. */ 5244 5245static int 5246_frvfdpic_reset_got_plt_entries (void **entryp, void *ignore ATTRIBUTE_UNUSED) 5247{ 5248 struct frvfdpic_relocs_info *entry = *entryp; 5249 5250 entry->got_entry = 0; 5251 entry->fdgot_entry = 0; 5252 entry->fd_entry = 0; 5253 entry->plt_entry = (bfd_vma)-1; 5254 entry->lzplt_entry = (bfd_vma)-1; 5255 entry->tlsoff_entry = 0; 5256 entry->tlsdesc_entry = 0; 5257 entry->tlsplt_entry = (bfd_vma)-1; 5258 5259 return 1; 5260} 5261 5262/* Follow indirect and warning hash entries so that each got entry 5263 points to the final symbol definition. P must point to a pointer 5264 to the hash table we're traversing. Since this traversal may 5265 modify the hash table, we set this pointer to NULL to indicate 5266 we've made a potentially-destructive change to the hash table, so 5267 the traversal must be restarted. */ 5268static int 5269_frvfdpic_resolve_final_relocs_info (void **entryp, void *p) 5270{ 5271 struct frvfdpic_relocs_info *entry = *entryp; 5272 htab_t *htab = p; 5273 5274 if (entry->symndx == -1) 5275 { 5276 struct elf_link_hash_entry *h = entry->d.h; 5277 struct frvfdpic_relocs_info *oentry; 5278 5279 while (h->root.type == bfd_link_hash_indirect 5280 || h->root.type == bfd_link_hash_warning) 5281 h = (struct elf_link_hash_entry *)h->root.u.i.link; 5282 5283 if (entry->d.h == h) 5284 return 1; 5285 5286 oentry = frvfdpic_relocs_info_for_global (*htab, 0, h, entry->addend, 5287 NO_INSERT); 5288 5289 if (oentry) 5290 { 5291 /* Merge the two entries. */ 5292 frvfdpic_pic_merge_early_relocs_info (oentry, entry); 5293 htab_clear_slot (*htab, entryp); 5294 return 1; 5295 } 5296 5297 entry->d.h = h; 5298 5299 /* If we can't find this entry with the new bfd hash, re-insert 5300 it, and get the traversal restarted. */ 5301 if (! htab_find (*htab, entry)) 5302 { 5303 htab_clear_slot (*htab, entryp); 5304 entryp = htab_find_slot (*htab, entry, INSERT); 5305 if (! *entryp) 5306 *entryp = entry; 5307 /* Abort the traversal, since the whole table may have 5308 moved, and leave it up to the parent to restart the 5309 process. */ 5310 *(htab_t *)p = NULL; 5311 return 0; 5312 } 5313 } 5314 5315 return 1; 5316} 5317 5318/* Compute the total size of the GOT, the PLT, the dynamic relocations 5319 section and the rofixup section. Assign locations for GOT and PLT 5320 entries. */ 5321 5322static bfd_boolean 5323_frvfdpic_size_got_plt (bfd *output_bfd, 5324 struct _frvfdpic_dynamic_got_plt_info *gpinfop) 5325{ 5326 bfd_signed_vma odd; 5327 bfd_vma limit, tlslimit; 5328 struct bfd_link_info *info = gpinfop->g.info; 5329 bfd *dynobj = elf_hash_table (info)->dynobj; 5330 5331 memcpy (frvfdpic_dynamic_got_plt_info (info), &gpinfop->g, 5332 sizeof (gpinfop->g)); 5333 5334 odd = 12; 5335 /* Compute the total size taken by entries in the 12-bit and 16-bit 5336 ranges, to tell how many PLT function descriptors we can bring 5337 into the 12-bit range without causing the 16-bit range to 5338 overflow. */ 5339 limit = odd + gpinfop->g.got12 + gpinfop->g.gotlos 5340 + gpinfop->g.fd12 + gpinfop->g.fdlos 5341 + gpinfop->g.tlsd12 + gpinfop->g.tlsdlos; 5342 if (limit < (bfd_vma)1 << 16) 5343 limit = ((bfd_vma)1 << 16) - limit; 5344 else 5345 limit = 0; 5346 if (gpinfop->g.fdplt < limit) 5347 { 5348 tlslimit = (limit - gpinfop->g.fdplt) & ~ (bfd_vma) 8; 5349 limit = gpinfop->g.fdplt; 5350 } 5351 else 5352 tlslimit = 0; 5353 if (gpinfop->g.tlsdplt < tlslimit) 5354 tlslimit = gpinfop->g.tlsdplt; 5355 5356 /* Determine the ranges of GOT offsets that we can use for each 5357 range of addressing modes. */ 5358 odd = _frvfdpic_compute_got_alloc_data (&gpinfop->got12, 5359 0, 5360 odd, 5361 16, 5362 gpinfop->g.got12, 5363 gpinfop->g.fd12, 5364 limit, 5365 gpinfop->g.tlsd12, 5366 tlslimit, 5367 (bfd_vma)1 << (12-1)); 5368 odd = _frvfdpic_compute_got_alloc_data (&gpinfop->gotlos, 5369 gpinfop->got12.tmin, 5370 odd, 5371 gpinfop->got12.tmax, 5372 gpinfop->g.gotlos, 5373 gpinfop->g.fdlos, 5374 gpinfop->g.fdplt 5375 - gpinfop->got12.fdplt, 5376 gpinfop->g.tlsdlos, 5377 gpinfop->g.tlsdplt 5378 - gpinfop->got12.tlsdplt, 5379 (bfd_vma)1 << (16-1)); 5380 odd = _frvfdpic_compute_got_alloc_data (&gpinfop->gothilo, 5381 gpinfop->gotlos.tmin, 5382 odd, 5383 gpinfop->gotlos.tmax, 5384 gpinfop->g.gothilo, 5385 gpinfop->g.fdhilo, 5386 gpinfop->g.fdplt 5387 - gpinfop->got12.fdplt 5388 - gpinfop->gotlos.fdplt, 5389 gpinfop->g.tlsdhilo, 5390 gpinfop->g.tlsdplt 5391 - gpinfop->got12.tlsdplt 5392 - gpinfop->gotlos.tlsdplt, 5393 (bfd_vma)1 << (32-1)); 5394 5395 /* Now assign (most) GOT offsets. */ 5396 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_got_entries, 5397 gpinfop); 5398 5399 frvfdpic_got_section (info)->size = gpinfop->gothilo.tmax 5400 - gpinfop->gothilo.tmin 5401 /* If an odd word is the last word of the GOT, we don't need this 5402 word to be part of the GOT. */ 5403 - (odd + 4 == gpinfop->gothilo.tmax ? 4 : 0); 5404 if (frvfdpic_got_section (info)->size == 0) 5405 frvfdpic_got_section (info)->flags |= SEC_EXCLUDE; 5406 else if (frvfdpic_got_section (info)->size == 12 5407 && ! elf_hash_table (info)->dynamic_sections_created) 5408 { 5409 frvfdpic_got_section (info)->flags |= SEC_EXCLUDE; 5410 frvfdpic_got_section (info)->size = 0; 5411 } 5412 /* This will be non-NULL during relaxation. The assumption is that 5413 the size of one of these sections will never grow, only shrink, 5414 so we can use the larger buffer we allocated before. */ 5415 else if (frvfdpic_got_section (info)->contents == NULL) 5416 { 5417 frvfdpic_got_section (info)->contents = 5418 (bfd_byte *) bfd_zalloc (dynobj, 5419 frvfdpic_got_section (info)->size); 5420 if (frvfdpic_got_section (info)->contents == NULL) 5421 return FALSE; 5422 } 5423 5424 if (frvfdpic_gotrel_section (info)) 5425 /* Subtract the number of lzplt entries, since those will generate 5426 relocations in the pltrel section. */ 5427 frvfdpic_gotrel_section (info)->size = 5428 (gpinfop->g.relocs - gpinfop->g.lzplt / 8) 5429 * get_elf_backend_data (output_bfd)->s->sizeof_rel; 5430 else 5431 BFD_ASSERT (gpinfop->g.relocs == 0); 5432 if (frvfdpic_gotrel_section (info)->size == 0) 5433 frvfdpic_gotrel_section (info)->flags |= SEC_EXCLUDE; 5434 else if (frvfdpic_gotrel_section (info)->contents == NULL) 5435 { 5436 frvfdpic_gotrel_section (info)->contents = 5437 (bfd_byte *) bfd_zalloc (dynobj, 5438 frvfdpic_gotrel_section (info)->size); 5439 if (frvfdpic_gotrel_section (info)->contents == NULL) 5440 return FALSE; 5441 } 5442 5443 frvfdpic_gotfixup_section (info)->size = (gpinfop->g.fixups + 1) * 4; 5444 if (frvfdpic_gotfixup_section (info)->size == 0) 5445 frvfdpic_gotfixup_section (info)->flags |= SEC_EXCLUDE; 5446 else if (frvfdpic_gotfixup_section (info)->contents == NULL) 5447 { 5448 frvfdpic_gotfixup_section (info)->contents = 5449 (bfd_byte *) bfd_zalloc (dynobj, 5450 frvfdpic_gotfixup_section (info)->size); 5451 if (frvfdpic_gotfixup_section (info)->contents == NULL) 5452 return FALSE; 5453 } 5454 5455 if (frvfdpic_pltrel_section (info)) 5456 { 5457 frvfdpic_pltrel_section (info)->size = 5458 gpinfop->g.lzplt / 8 5459 * get_elf_backend_data (output_bfd)->s->sizeof_rel; 5460 if (frvfdpic_pltrel_section (info)->size == 0) 5461 frvfdpic_pltrel_section (info)->flags |= SEC_EXCLUDE; 5462 else if (frvfdpic_pltrel_section (info)->contents == NULL) 5463 { 5464 frvfdpic_pltrel_section (info)->contents = 5465 (bfd_byte *) bfd_zalloc (dynobj, 5466 frvfdpic_pltrel_section (info)->size); 5467 if (frvfdpic_pltrel_section (info)->contents == NULL) 5468 return FALSE; 5469 } 5470 } 5471 5472 /* Add 4 bytes for every block of at most 65535 lazy PLT entries, 5473 such that there's room for the additional instruction needed to 5474 call the resolver. Since _frvfdpic_assign_got_entries didn't 5475 account for them, our block size is 4 bytes smaller than the real 5476 block size. */ 5477 if (frvfdpic_plt_section (info)) 5478 { 5479 frvfdpic_plt_section (info)->size = gpinfop->g.lzplt 5480 + ((gpinfop->g.lzplt + (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) - 8) 5481 / (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) * 4); 5482 } 5483 5484 /* Reset it, such that _frvfdpic_assign_plt_entries() can use it to 5485 actually assign lazy PLT entries addresses. */ 5486 gpinfop->g.lzplt = 0; 5487 5488 /* Save information that we're going to need to generate GOT and PLT 5489 entries. */ 5490 frvfdpic_got_initial_offset (info) = -gpinfop->gothilo.tmin; 5491 5492 if (get_elf_backend_data (output_bfd)->want_got_sym) 5493 elf_hash_table (info)->hgot->root.u.def.value 5494 = frvfdpic_got_initial_offset (info); 5495 5496 if (frvfdpic_plt_section (info)) 5497 frvfdpic_plt_initial_offset (info) = 5498 frvfdpic_plt_section (info)->size; 5499 5500 /* Allocate a ret statement at plt_initial_offset, to be used by 5501 locally-resolved TLS descriptors. */ 5502 if (gpinfop->g.tls_ret_refs) 5503 frvfdpic_plt_section (info)->size += 4; 5504 5505 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_plt_entries, 5506 gpinfop); 5507 5508 /* Allocate the PLT section contents only after 5509 _frvfdpic_assign_plt_entries has a chance to add the size of the 5510 non-lazy PLT entries. */ 5511 if (frvfdpic_plt_section (info)) 5512 { 5513 if (frvfdpic_plt_section (info)->size == 0) 5514 frvfdpic_plt_section (info)->flags |= SEC_EXCLUDE; 5515 else if (frvfdpic_plt_section (info)->contents == NULL) 5516 { 5517 frvfdpic_plt_section (info)->contents = 5518 (bfd_byte *) bfd_zalloc (dynobj, 5519 frvfdpic_plt_section (info)->size); 5520 if (frvfdpic_plt_section (info)->contents == NULL) 5521 return FALSE; 5522 } 5523 } 5524 5525 return TRUE; 5526} 5527 5528/* Set the sizes of the dynamic sections. */ 5529 5530static bfd_boolean 5531elf32_frvfdpic_size_dynamic_sections (bfd *output_bfd, 5532 struct bfd_link_info *info) 5533{ 5534 bfd *dynobj; 5535 asection *s; 5536 struct _frvfdpic_dynamic_got_plt_info gpinfo; 5537 5538 dynobj = elf_hash_table (info)->dynobj; 5539 BFD_ASSERT (dynobj != NULL); 5540 5541 if (elf_hash_table (info)->dynamic_sections_created) 5542 { 5543 /* Set the contents of the .interp section to the interpreter. */ 5544 if (info->executable) 5545 { 5546 s = bfd_get_section_by_name (dynobj, ".interp"); 5547 BFD_ASSERT (s != NULL); 5548 s->size = sizeof ELF_DYNAMIC_INTERPRETER; 5549 s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; 5550 } 5551 } 5552 5553 memset (&gpinfo, 0, sizeof (gpinfo)); 5554 gpinfo.g.info = info; 5555 5556 for (;;) 5557 { 5558 htab_t relocs = frvfdpic_relocs_info (info); 5559 5560 htab_traverse (relocs, _frvfdpic_resolve_final_relocs_info, &relocs); 5561 5562 if (relocs == frvfdpic_relocs_info (info)) 5563 break; 5564 } 5565 5566 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_count_got_plt_entries, 5567 &gpinfo.g); 5568 5569 /* Allocate space to save the summary information, we're going to 5570 use it if we're doing relaxations. */ 5571 frvfdpic_dynamic_got_plt_info (info) = bfd_alloc (dynobj, sizeof (gpinfo.g)); 5572 5573 if (!_frvfdpic_size_got_plt (output_bfd, &gpinfo)) 5574 return FALSE; 5575 5576 if (elf_hash_table (info)->dynamic_sections_created) 5577 { 5578 if (frvfdpic_got_section (info)->size) 5579 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)) 5580 return FALSE; 5581 5582 if (frvfdpic_pltrel_section (info)->size) 5583 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) 5584 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_REL) 5585 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) 5586 return FALSE; 5587 5588 if (frvfdpic_gotrel_section (info)->size) 5589 if (!_bfd_elf_add_dynamic_entry (info, DT_REL, 0) 5590 || !_bfd_elf_add_dynamic_entry (info, DT_RELSZ, 0) 5591 || !_bfd_elf_add_dynamic_entry (info, DT_RELENT, 5592 sizeof (Elf32_External_Rel))) 5593 return FALSE; 5594 } 5595 5596 return TRUE; 5597} 5598 5599static bfd_boolean 5600elf32_frvfdpic_always_size_sections (bfd *output_bfd, 5601 struct bfd_link_info *info) 5602{ 5603 if (!info->relocatable) 5604 { 5605 struct elf_link_hash_entry *h; 5606 asection *sec; 5607 5608 /* Force a PT_GNU_STACK segment to be created. */ 5609 if (! elf_tdata (output_bfd)->stack_flags) 5610 elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | PF_X; 5611 5612 /* Define __stacksize if it's not defined yet. */ 5613 h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize", 5614 FALSE, FALSE, FALSE); 5615 if (! h || h->root.type != bfd_link_hash_defined 5616 || h->type != STT_OBJECT 5617 || !h->def_regular) 5618 { 5619 struct bfd_link_hash_entry *bh = NULL; 5620 5621 if (!(_bfd_generic_link_add_one_symbol 5622 (info, output_bfd, "__stacksize", 5623 BSF_GLOBAL, bfd_abs_section_ptr, DEFAULT_STACK_SIZE, 5624 (const char *) NULL, FALSE, 5625 get_elf_backend_data (output_bfd)->collect, &bh))) 5626 return FALSE; 5627 5628 h = (struct elf_link_hash_entry *) bh; 5629 h->def_regular = 1; 5630 h->type = STT_OBJECT; 5631 /* This one must NOT be hidden. */ 5632 } 5633 5634 /* Create a stack section, and set its alignment. */ 5635 sec = bfd_make_section (output_bfd, ".stack"); 5636 5637 if (sec == NULL 5638 || ! bfd_set_section_alignment (output_bfd, sec, 3)) 5639 return FALSE; 5640 } 5641 5642 return TRUE; 5643} 5644 5645/* Look for opportunities to relax TLS relocations. We can assume 5646 we're linking the main executable or a static-tls library, since 5647 otherwise we wouldn't have got here. */ 5648 5649static int 5650_frvfdpic_relax_got_plt_entries (void **entryp, void *dinfo_) 5651{ 5652 struct frvfdpic_relocs_info *entry = *entryp; 5653 struct _frvfdpic_dynamic_got_info *dinfo = dinfo_; 5654 5655 _frvfdpic_relax_tls_entries (entry, dinfo, TRUE); 5656 5657 return 1; 5658} 5659 5660static bfd_boolean 5661elf32_frvfdpic_relax_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, 5662 struct bfd_link_info *info, bfd_boolean *again) 5663{ 5664 struct _frvfdpic_dynamic_got_plt_info gpinfo; 5665 5666 /* If we return early, we didn't change anything. */ 5667 *again = FALSE; 5668 5669 /* We'll do our thing when requested to relax the GOT section. */ 5670 if (sec != frvfdpic_got_section (info)) 5671 return TRUE; 5672 5673 /* We can only relax when linking the main executable or a library 5674 that can't be dlopened. */ 5675 if (! info->executable && ! (info->flags & DF_STATIC_TLS)) 5676 return TRUE; 5677 5678 /* If there isn't a TLS section for this binary, we can't do 5679 anything about its TLS relocations (it probably doesn't have 5680 any. */ 5681 if (elf_hash_table (info)->tls_sec == NULL) 5682 return TRUE; 5683 5684 memset (&gpinfo, 0, sizeof (gpinfo)); 5685 memcpy (&gpinfo.g, frvfdpic_dynamic_got_plt_info (info), sizeof (gpinfo.g)); 5686 5687 /* Now look for opportunities to relax, adjusting the GOT usage 5688 as needed. */ 5689 htab_traverse (frvfdpic_relocs_info (info), 5690 _frvfdpic_relax_got_plt_entries, 5691 &gpinfo.g); 5692 5693 /* If we changed anything, reset and re-assign GOT and PLT entries. */ 5694 if (memcmp (frvfdpic_dynamic_got_plt_info (info), 5695 &gpinfo.g, sizeof (gpinfo.g)) != 0) 5696 { 5697 /* Clear GOT and PLT assignments. */ 5698 htab_traverse (frvfdpic_relocs_info (info), 5699 _frvfdpic_reset_got_plt_entries, 5700 NULL); 5701 5702 /* The owner of the TLS section is the output bfd. There should 5703 be a better way to get to it. */ 5704 if (!_frvfdpic_size_got_plt (elf_hash_table (info)->tls_sec->owner, 5705 &gpinfo)) 5706 return FALSE; 5707 5708 /* Repeat until we don't make any further changes. We could fail to 5709 introduce changes in a round if, for example, the 12-bit range is 5710 full, but we later release some space by getting rid of TLS 5711 descriptors in it. We have to repeat the whole process because 5712 we might have changed the size of a section processed before this 5713 one. */ 5714 *again = TRUE; 5715 } 5716 5717 return TRUE; 5718} 5719 5720static bfd_boolean 5721elf32_frvfdpic_modify_segment_map (bfd *output_bfd, 5722 struct bfd_link_info *info) 5723{ 5724 struct elf_segment_map *m; 5725 5726 /* objcopy and strip preserve what's already there using 5727 elf32_frvfdpic_copy_private_bfd_data (). */ 5728 if (! info) 5729 return TRUE; 5730 5731 for (m = elf_tdata (output_bfd)->segment_map; m != NULL; m = m->next) 5732 if (m->p_type == PT_GNU_STACK) 5733 break; 5734 5735 if (m) 5736 { 5737 asection *sec = bfd_get_section_by_name (output_bfd, ".stack"); 5738 struct elf_link_hash_entry *h; 5739 5740 if (sec) 5741 { 5742 /* Obtain the pointer to the __stacksize symbol. */ 5743 h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize", 5744 FALSE, FALSE, FALSE); 5745 while (h->root.type == bfd_link_hash_indirect 5746 || h->root.type == bfd_link_hash_warning) 5747 h = (struct elf_link_hash_entry *)h->root.u.i.link; 5748 BFD_ASSERT (h->root.type == bfd_link_hash_defined); 5749 5750 /* Set the section size from the symbol value. We 5751 intentionally ignore the symbol section. */ 5752 if (h->root.type == bfd_link_hash_defined) 5753 sec->size = h->root.u.def.value; 5754 else 5755 sec->size = DEFAULT_STACK_SIZE; 5756 5757 /* Add the stack section to the PT_GNU_STACK segment, 5758 such that its size and alignment requirements make it 5759 to the segment. */ 5760 m->sections[m->count] = sec; 5761 m->count++; 5762 } 5763 } 5764 5765 return TRUE; 5766} 5767 5768/* Fill in code and data in dynamic sections. */ 5769 5770static bfd_boolean 5771elf32_frv_finish_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 5772 struct bfd_link_info *info ATTRIBUTE_UNUSED) 5773{ 5774 /* Nothing to be done for non-FDPIC. */ 5775 return TRUE; 5776} 5777 5778static bfd_boolean 5779elf32_frvfdpic_finish_dynamic_sections (bfd *output_bfd, 5780 struct bfd_link_info *info) 5781{ 5782 bfd *dynobj; 5783 asection *sdyn; 5784 5785 dynobj = elf_hash_table (info)->dynobj; 5786 5787 if (frvfdpic_dynamic_got_plt_info (info)) 5788 { 5789 BFD_ASSERT (frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs == 0); 5790 } 5791 if (frvfdpic_got_section (info)) 5792 { 5793 BFD_ASSERT (frvfdpic_gotrel_section (info)->size 5794 == (frvfdpic_gotrel_section (info)->reloc_count 5795 * sizeof (Elf32_External_Rel))); 5796 5797 if (frvfdpic_gotfixup_section (info)) 5798 { 5799 struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot; 5800 bfd_vma got_value = hgot->root.u.def.value 5801 + hgot->root.u.def.section->output_section->vma 5802 + hgot->root.u.def.section->output_offset; 5803 struct bfd_link_hash_entry *hend; 5804 5805 _frvfdpic_add_rofixup (output_bfd, frvfdpic_gotfixup_section (info), 5806 got_value, 0); 5807 5808 if (frvfdpic_gotfixup_section (info)->size 5809 != (frvfdpic_gotfixup_section (info)->reloc_count * 4)) 5810 { 5811 error: 5812 (*_bfd_error_handler) 5813 ("LINKER BUG: .rofixup section size mismatch"); 5814 return FALSE; 5815 } 5816 5817 hend = bfd_link_hash_lookup (info->hash, "__ROFIXUP_END__", 5818 FALSE, FALSE, TRUE); 5819 if (hend 5820 && (hend->type == bfd_link_hash_defined 5821 || hend->type == bfd_link_hash_defweak)) 5822 { 5823 bfd_vma value = 5824 frvfdpic_gotfixup_section (info)->output_section->vma 5825 + frvfdpic_gotfixup_section (info)->output_offset 5826 + frvfdpic_gotfixup_section (info)->size 5827 - hend->u.def.section->output_section->vma 5828 - hend->u.def.section->output_offset; 5829 BFD_ASSERT (hend->u.def.value == value); 5830 if (hend->u.def.value != value) 5831 goto error; 5832 } 5833 } 5834 } 5835 if (frvfdpic_pltrel_section (info)) 5836 { 5837 BFD_ASSERT (frvfdpic_pltrel_section (info)->size 5838 == (frvfdpic_pltrel_section (info)->reloc_count 5839 * sizeof (Elf32_External_Rel))); 5840 } 5841 5842 5843 if (elf_hash_table (info)->dynamic_sections_created) 5844 { 5845 Elf32_External_Dyn * dyncon; 5846 Elf32_External_Dyn * dynconend; 5847 5848 sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); 5849 5850 BFD_ASSERT (sdyn != NULL); 5851 5852 dyncon = (Elf32_External_Dyn *) sdyn->contents; 5853 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); 5854 5855 for (; dyncon < dynconend; dyncon++) 5856 { 5857 Elf_Internal_Dyn dyn; 5858 5859 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 5860 5861 switch (dyn.d_tag) 5862 { 5863 default: 5864 break; 5865 5866 case DT_PLTGOT: 5867 dyn.d_un.d_ptr = frvfdpic_got_section (info)->output_section->vma 5868 + frvfdpic_got_section (info)->output_offset 5869 + frvfdpic_got_initial_offset (info); 5870 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 5871 break; 5872 5873 case DT_JMPREL: 5874 dyn.d_un.d_ptr = frvfdpic_pltrel_section (info) 5875 ->output_section->vma 5876 + frvfdpic_pltrel_section (info)->output_offset; 5877 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 5878 break; 5879 5880 case DT_PLTRELSZ: 5881 dyn.d_un.d_val = frvfdpic_pltrel_section (info)->size; 5882 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 5883 break; 5884 } 5885 } 5886 } 5887 5888 return TRUE; 5889} 5890 5891/* Adjust a symbol defined by a dynamic object and referenced by a 5892 regular object. */ 5893 5894static bfd_boolean 5895elf32_frvfdpic_adjust_dynamic_symbol 5896(struct bfd_link_info *info ATTRIBUTE_UNUSED, 5897 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) 5898{ 5899 bfd * dynobj; 5900 5901 dynobj = elf_hash_table (info)->dynobj; 5902 5903 /* Make sure we know what is going on here. */ 5904 BFD_ASSERT (dynobj != NULL 5905 && (h->u.weakdef != NULL 5906 || (h->def_dynamic 5907 && h->ref_regular 5908 && !h->def_regular))); 5909 5910 /* If this is a weak symbol, and there is a real definition, the 5911 processor independent code will have arranged for us to see the 5912 real definition first, and we can just use the same value. */ 5913 if (h->u.weakdef != NULL) 5914 { 5915 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 5916 || h->u.weakdef->root.type == bfd_link_hash_defweak); 5917 h->root.u.def.section = h->u.weakdef->root.u.def.section; 5918 h->root.u.def.value = h->u.weakdef->root.u.def.value; 5919 } 5920 5921 return TRUE; 5922} 5923 5924/* Perform any actions needed for dynamic symbols. */ 5925 5926static bfd_boolean 5927elf32_frvfdpic_finish_dynamic_symbol 5928(bfd *output_bfd ATTRIBUTE_UNUSED, 5929 struct bfd_link_info *info ATTRIBUTE_UNUSED, 5930 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED, 5931 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) 5932{ 5933 return TRUE; 5934} 5935 5936/* Decide whether to attempt to turn absptr or lsda encodings in 5937 shared libraries into pcrel within the given input section. */ 5938 5939static bfd_boolean 5940frvfdpic_elf_use_relative_eh_frame 5941(bfd *input_bfd ATTRIBUTE_UNUSED, 5942 struct bfd_link_info *info ATTRIBUTE_UNUSED, 5943 asection *eh_frame_section ATTRIBUTE_UNUSED) 5944{ 5945 /* We can't use PC-relative encodings in FDPIC binaries, in general. */ 5946 return FALSE; 5947} 5948 5949/* Adjust the contents of an eh_frame_hdr section before they're output. */ 5950 5951static bfd_byte 5952frvfdpic_elf_encode_eh_address (bfd *abfd, 5953 struct bfd_link_info *info, 5954 asection *osec, bfd_vma offset, 5955 asection *loc_sec, bfd_vma loc_offset, 5956 bfd_vma *encoded) 5957{ 5958 struct elf_link_hash_entry *h; 5959 5960 h = elf_hash_table (info)->hgot; 5961 BFD_ASSERT (h && h->root.type == bfd_link_hash_defined); 5962 5963 if (! h || (_frvfdpic_osec_to_segment (abfd, osec) 5964 == _frvfdpic_osec_to_segment (abfd, loc_sec->output_section))) 5965 return _bfd_elf_encode_eh_address (abfd, info, osec, offset, 5966 loc_sec, loc_offset, encoded); 5967 5968 BFD_ASSERT (_frvfdpic_osec_to_segment (abfd, osec) 5969 == (_frvfdpic_osec_to_segment 5970 (abfd, h->root.u.def.section->output_section))); 5971 5972 *encoded = osec->vma + offset 5973 - (h->root.u.def.value 5974 + h->root.u.def.section->output_section->vma 5975 + h->root.u.def.section->output_offset); 5976 5977 return DW_EH_PE_datarel | DW_EH_PE_sdata4; 5978} 5979 5980/* Look through the relocs for a section during the first phase. 5981 5982 Besides handling virtual table relocs for gc, we have to deal with 5983 all sorts of PIC-related relocations. We describe below the 5984 general plan on how to handle such relocations, even though we only 5985 collect information at this point, storing them in hash tables for 5986 perusal of later passes. 5987 5988 32 relocations are propagated to the linker output when creating 5989 position-independent output. LO16 and HI16 relocations are not 5990 supposed to be encountered in this case. 5991 5992 LABEL16 should always be resolvable by the linker, since it's only 5993 used by branches. 5994 5995 LABEL24, on the other hand, is used by calls. If it turns out that 5996 the target of a call is a dynamic symbol, a PLT entry must be 5997 created for it, which triggers the creation of a private function 5998 descriptor and, unless lazy binding is disabled, a lazy PLT entry. 5999 6000 GPREL relocations require the referenced symbol to be in the same 6001 segment as _gp, but this can only be checked later. 6002 6003 All GOT, GOTOFF and FUNCDESC relocations require a .got section to 6004 exist. LABEL24 might as well, since it may require a PLT entry, 6005 that will require a got. 6006 6007 Non-FUNCDESC GOT relocations require a GOT entry to be created 6008 regardless of whether the symbol is dynamic. However, since a 6009 global symbol that turns out to not be exported may have the same 6010 address of a non-dynamic symbol, we don't assign GOT entries at 6011 this point, such that we can share them in this case. A relocation 6012 for the GOT entry always has to be created, be it to offset a 6013 private symbol by the section load address, be it to get the symbol 6014 resolved dynamically. 6015 6016 FUNCDESC GOT relocations require a GOT entry to be created, and 6017 handled as if a FUNCDESC relocation was applied to the GOT entry in 6018 an object file. 6019 6020 FUNCDESC relocations referencing a symbol that turns out to NOT be 6021 dynamic cause a private function descriptor to be created. The 6022 FUNCDESC relocation then decays to a 32 relocation that points at 6023 the private descriptor. If the symbol is dynamic, the FUNCDESC 6024 relocation is propagated to the linker output, such that the 6025 dynamic linker creates the canonical descriptor, pointing to the 6026 dynamically-resolved definition of the function. 6027 6028 Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic 6029 symbols that are assigned to the same segment as the GOT, but we 6030 can only check this later, after we know the complete set of 6031 symbols defined and/or exported. 6032 6033 FUNCDESC GOTOFF relocations require a function descriptor to be 6034 created and, unless lazy binding is disabled or the symbol is not 6035 dynamic, a lazy PLT entry. Since we can't tell at this point 6036 whether a symbol is going to be dynamic, we have to decide later 6037 whether to create a lazy PLT entry or bind the descriptor directly 6038 to the private function. 6039 6040 FUNCDESC_VALUE relocations are not supposed to be present in object 6041 files, but they may very well be simply propagated to the linker 6042 output, since they have no side effect. 6043 6044 6045 A function descriptor always requires a FUNCDESC_VALUE relocation. 6046 Whether it's in .plt.rel or not depends on whether lazy binding is 6047 enabled and on whether the referenced symbol is dynamic. 6048 6049 The existence of a lazy PLT requires the resolverStub lazy PLT 6050 entry to be present. 6051 6052 6053 As for assignment of GOT, PLT and lazy PLT entries, and private 6054 descriptors, we might do them all sequentially, but we can do 6055 better than that. For example, we can place GOT entries and 6056 private function descriptors referenced using 12-bit operands 6057 closer to the PIC register value, such that these relocations don't 6058 overflow. Those that are only referenced with LO16 relocations 6059 could come next, but we may as well place PLT-required function 6060 descriptors in the 12-bit range to make them shorter. Symbols 6061 referenced with LO16/HI16 may come next, but we may place 6062 additional function descriptors in the 16-bit range if we can 6063 reliably tell that we've already placed entries that are ever 6064 referenced with only LO16. PLT entries are therefore generated as 6065 small as possible, while not introducing relocation overflows in 6066 GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be 6067 generated before or after PLT entries, but not intermingled with 6068 them, such that we can have more lazy PLT entries in range for a 6069 branch to the resolverStub. The resolverStub should be emitted at 6070 the most distant location from the first lazy PLT entry such that 6071 it's still in range for a branch, or closer, if there isn't a need 6072 for so many lazy PLT entries. Additional lazy PLT entries may be 6073 emitted after the resolverStub, as long as branches are still in 6074 range. If the branch goes out of range, longer lazy PLT entries 6075 are emitted. 6076 6077 We could further optimize PLT and lazy PLT entries by giving them 6078 priority in assignment to closer-to-gr17 locations depending on the 6079 number of occurrences of references to them (assuming a function 6080 that's called more often is more important for performance, so its 6081 PLT entry should be faster), or taking hints from the compiler. 6082 Given infinite time and money... :-) */ 6083 6084static bfd_boolean 6085elf32_frv_check_relocs (abfd, info, sec, relocs) 6086 bfd *abfd; 6087 struct bfd_link_info *info; 6088 asection *sec; 6089 const Elf_Internal_Rela *relocs; 6090{ 6091 Elf_Internal_Shdr *symtab_hdr; 6092 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; 6093 const Elf_Internal_Rela *rel; 6094 const Elf_Internal_Rela *rel_end; 6095 bfd *dynobj; 6096 struct frvfdpic_relocs_info *picrel; 6097 6098 if (info->relocatable) 6099 return TRUE; 6100 6101 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 6102 sym_hashes = elf_sym_hashes (abfd); 6103 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym); 6104 if (!elf_bad_symtab (abfd)) 6105 sym_hashes_end -= symtab_hdr->sh_info; 6106 6107 dynobj = elf_hash_table (info)->dynobj; 6108 rel_end = relocs + sec->reloc_count; 6109 for (rel = relocs; rel < rel_end; rel++) 6110 { 6111 struct elf_link_hash_entry *h; 6112 unsigned long r_symndx; 6113 6114 r_symndx = ELF32_R_SYM (rel->r_info); 6115 if (r_symndx < symtab_hdr->sh_info) 6116 h = NULL; 6117 else 6118 { 6119 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 6120 while (h->root.type == bfd_link_hash_indirect 6121 || h->root.type == bfd_link_hash_warning) 6122 h = (struct elf_link_hash_entry *) h->root.u.i.link; 6123 } 6124 6125 switch (ELF32_R_TYPE (rel->r_info)) 6126 { 6127 case R_FRV_GETTLSOFF: 6128 case R_FRV_TLSDESC_VALUE: 6129 case R_FRV_GOTTLSDESC12: 6130 case R_FRV_GOTTLSDESCHI: 6131 case R_FRV_GOTTLSDESCLO: 6132 case R_FRV_GOTTLSOFF12: 6133 case R_FRV_GOTTLSOFFHI: 6134 case R_FRV_GOTTLSOFFLO: 6135 case R_FRV_TLSOFF: 6136 case R_FRV_GOT12: 6137 case R_FRV_GOTHI: 6138 case R_FRV_GOTLO: 6139 case R_FRV_FUNCDESC_GOT12: 6140 case R_FRV_FUNCDESC_GOTHI: 6141 case R_FRV_FUNCDESC_GOTLO: 6142 case R_FRV_GOTOFF12: 6143 case R_FRV_GOTOFFHI: 6144 case R_FRV_GOTOFFLO: 6145 case R_FRV_FUNCDESC_GOTOFF12: 6146 case R_FRV_FUNCDESC_GOTOFFHI: 6147 case R_FRV_FUNCDESC_GOTOFFLO: 6148 case R_FRV_FUNCDESC: 6149 case R_FRV_FUNCDESC_VALUE: 6150 case R_FRV_TLSMOFF12: 6151 case R_FRV_TLSMOFFHI: 6152 case R_FRV_TLSMOFFLO: 6153 case R_FRV_TLSMOFF: 6154 if (! IS_FDPIC (abfd)) 6155 goto bad_reloc; 6156 /* Fall through. */ 6157 case R_FRV_GPREL12: 6158 case R_FRV_GPRELU12: 6159 case R_FRV_GPRELHI: 6160 case R_FRV_GPRELLO: 6161 case R_FRV_LABEL24: 6162 case R_FRV_32: 6163 if (! dynobj) 6164 { 6165 elf_hash_table (info)->dynobj = dynobj = abfd; 6166 if (! _frv_create_got_section (abfd, info)) 6167 return FALSE; 6168 } 6169 if (! IS_FDPIC (abfd)) 6170 { 6171 picrel = NULL; 6172 break; 6173 } 6174 if (h != NULL) 6175 { 6176 if (h->dynindx == -1) 6177 switch (ELF_ST_VISIBILITY (h->other)) 6178 { 6179 case STV_INTERNAL: 6180 case STV_HIDDEN: 6181 break; 6182 default: 6183 bfd_elf_link_record_dynamic_symbol (info, h); 6184 break; 6185 } 6186 picrel 6187 = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info (info), 6188 abfd, h, 6189 rel->r_addend, INSERT); 6190 } 6191 else 6192 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info 6193 (info), abfd, r_symndx, 6194 rel->r_addend, INSERT); 6195 if (! picrel) 6196 return FALSE; 6197 break; 6198 6199 default: 6200 picrel = NULL; 6201 break; 6202 } 6203 6204 switch (ELF32_R_TYPE (rel->r_info)) 6205 { 6206 case R_FRV_LABEL24: 6207 if (IS_FDPIC (abfd)) 6208 picrel->call = 1; 6209 break; 6210 6211 case R_FRV_FUNCDESC_VALUE: 6212 picrel->relocsfdv++; 6213 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) 6214 picrel->relocs32--; 6215 /* Fall through. */ 6216 6217 case R_FRV_32: 6218 if (! IS_FDPIC (abfd)) 6219 break; 6220 6221 picrel->sym = 1; 6222 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) 6223 picrel->relocs32++; 6224 break; 6225 6226 case R_FRV_GOT12: 6227 picrel->got12 = 1; 6228 break; 6229 6230 case R_FRV_GOTHI: 6231 case R_FRV_GOTLO: 6232 picrel->gothilo = 1; 6233 break; 6234 6235 case R_FRV_FUNCDESC_GOT12: 6236 picrel->fdgot12 = 1; 6237 break; 6238 6239 case R_FRV_FUNCDESC_GOTHI: 6240 case R_FRV_FUNCDESC_GOTLO: 6241 picrel->fdgothilo = 1; 6242 break; 6243 6244 case R_FRV_GOTOFF12: 6245 case R_FRV_GOTOFFHI: 6246 case R_FRV_GOTOFFLO: 6247 picrel->gotoff = 1; 6248 break; 6249 6250 case R_FRV_FUNCDESC_GOTOFF12: 6251 picrel->fdgoff12 = 1; 6252 break; 6253 6254 case R_FRV_FUNCDESC_GOTOFFHI: 6255 case R_FRV_FUNCDESC_GOTOFFLO: 6256 picrel->fdgoffhilo = 1; 6257 break; 6258 6259 case R_FRV_FUNCDESC: 6260 picrel->fd = 1; 6261 picrel->relocsfd++; 6262 break; 6263 6264 case R_FRV_GETTLSOFF: 6265 picrel->tlsplt = 1; 6266 break; 6267 6268 case R_FRV_TLSDESC_VALUE: 6269 picrel->relocstlsd++; 6270 goto bad_reloc; 6271 6272 case R_FRV_GOTTLSDESC12: 6273 picrel->tlsdesc12 = 1; 6274 break; 6275 6276 case R_FRV_GOTTLSDESCHI: 6277 case R_FRV_GOTTLSDESCLO: 6278 picrel->tlsdeschilo = 1; 6279 break; 6280 6281 case R_FRV_TLSMOFF12: 6282 case R_FRV_TLSMOFFHI: 6283 case R_FRV_TLSMOFFLO: 6284 case R_FRV_TLSMOFF: 6285 break; 6286 6287 case R_FRV_GOTTLSOFF12: 6288 picrel->tlsoff12 = 1; 6289 info->flags |= DF_STATIC_TLS; 6290 break; 6291 6292 case R_FRV_GOTTLSOFFHI: 6293 case R_FRV_GOTTLSOFFLO: 6294 picrel->tlsoffhilo = 1; 6295 info->flags |= DF_STATIC_TLS; 6296 break; 6297 6298 case R_FRV_TLSOFF: 6299 picrel->relocstlsoff++; 6300 info->flags |= DF_STATIC_TLS; 6301 goto bad_reloc; 6302 6303 /* This relocation describes the C++ object vtable hierarchy. 6304 Reconstruct it for later use during GC. */ 6305 case R_FRV_GNU_VTINHERIT: 6306 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 6307 return FALSE; 6308 break; 6309 6310 /* This relocation describes which C++ vtable entries are actually 6311 used. Record for later use during GC. */ 6312 case R_FRV_GNU_VTENTRY: 6313 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 6314 return FALSE; 6315 break; 6316 6317 case R_FRV_LABEL16: 6318 case R_FRV_LO16: 6319 case R_FRV_HI16: 6320 case R_FRV_GPREL12: 6321 case R_FRV_GPRELU12: 6322 case R_FRV_GPREL32: 6323 case R_FRV_GPRELHI: 6324 case R_FRV_GPRELLO: 6325 case R_FRV_TLSDESC_RELAX: 6326 case R_FRV_GETTLSOFF_RELAX: 6327 case R_FRV_TLSOFF_RELAX: 6328 break; 6329 6330 default: 6331 bad_reloc: 6332 (*_bfd_error_handler) 6333 (_("%B: unsupported relocation type %i"), 6334 abfd, ELF32_R_TYPE (rel->r_info)); 6335 return FALSE; 6336 } 6337 } 6338 6339 return TRUE; 6340} 6341 6342 6343/* Return the machine subcode from the ELF e_flags header. */ 6344 6345static int 6346elf32_frv_machine (abfd) 6347 bfd *abfd; 6348{ 6349 switch (elf_elfheader (abfd)->e_flags & EF_FRV_CPU_MASK) 6350 { 6351 default: break; 6352 case EF_FRV_CPU_FR550: return bfd_mach_fr550; 6353 case EF_FRV_CPU_FR500: return bfd_mach_fr500; 6354 case EF_FRV_CPU_FR450: return bfd_mach_fr450; 6355 case EF_FRV_CPU_FR405: return bfd_mach_fr400; 6356 case EF_FRV_CPU_FR400: return bfd_mach_fr400; 6357 case EF_FRV_CPU_FR300: return bfd_mach_fr300; 6358 case EF_FRV_CPU_SIMPLE: return bfd_mach_frvsimple; 6359 case EF_FRV_CPU_TOMCAT: return bfd_mach_frvtomcat; 6360 } 6361 6362 return bfd_mach_frv; 6363} 6364 6365/* Set the right machine number for a FRV ELF file. */ 6366 6367static bfd_boolean 6368elf32_frv_object_p (abfd) 6369 bfd *abfd; 6370{ 6371 bfd_default_set_arch_mach (abfd, bfd_arch_frv, elf32_frv_machine (abfd)); 6372 return (((elf_elfheader (abfd)->e_flags & EF_FRV_FDPIC) != 0) 6373 == (IS_FDPIC (abfd))); 6374} 6375 6376/* Function to set the ELF flag bits. */ 6377 6378static bfd_boolean 6379frv_elf_set_private_flags (abfd, flags) 6380 bfd *abfd; 6381 flagword flags; 6382{ 6383 elf_elfheader (abfd)->e_flags = flags; 6384 elf_flags_init (abfd) = TRUE; 6385 return TRUE; 6386} 6387 6388/* Copy backend specific data from one object module to another. */ 6389 6390static bfd_boolean 6391frv_elf_copy_private_bfd_data (ibfd, obfd) 6392 bfd *ibfd; 6393 bfd *obfd; 6394{ 6395 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour 6396 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 6397 return TRUE; 6398 6399 BFD_ASSERT (!elf_flags_init (obfd) 6400 || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags); 6401 6402 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; 6403 elf_flags_init (obfd) = TRUE; 6404 return TRUE; 6405} 6406 6407/* Return true if the architecture described by elf header flag 6408 EXTENSION is an extension of the architecture described by BASE. */ 6409 6410static bfd_boolean 6411frv_elf_arch_extension_p (flagword base, flagword extension) 6412{ 6413 if (base == extension) 6414 return TRUE; 6415 6416 /* CPU_GENERIC code can be merged with code for a specific 6417 architecture, in which case the result is marked as being 6418 for the specific architecture. Everything is therefore 6419 an extension of CPU_GENERIC. */ 6420 if (base == EF_FRV_CPU_GENERIC) 6421 return TRUE; 6422 6423 if (extension == EF_FRV_CPU_FR450) 6424 if (base == EF_FRV_CPU_FR400 || base == EF_FRV_CPU_FR405) 6425 return TRUE; 6426 6427 if (extension == EF_FRV_CPU_FR405) 6428 if (base == EF_FRV_CPU_FR400) 6429 return TRUE; 6430 6431 return FALSE; 6432} 6433 6434static bfd_boolean 6435elf32_frvfdpic_copy_private_bfd_data (bfd *ibfd, bfd *obfd) 6436{ 6437 unsigned i; 6438 6439 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour 6440 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 6441 return TRUE; 6442 6443 if (! frv_elf_copy_private_bfd_data (ibfd, obfd)) 6444 return FALSE; 6445 6446 if (! elf_tdata (ibfd) || ! elf_tdata (ibfd)->phdr 6447 || ! elf_tdata (obfd) || ! elf_tdata (obfd)->phdr) 6448 return TRUE; 6449 6450 /* Copy the stack size. */ 6451 for (i = 0; i < elf_elfheader (ibfd)->e_phnum; i++) 6452 if (elf_tdata (ibfd)->phdr[i].p_type == PT_GNU_STACK) 6453 { 6454 Elf_Internal_Phdr *iphdr = &elf_tdata (ibfd)->phdr[i]; 6455 6456 for (i = 0; i < elf_elfheader (obfd)->e_phnum; i++) 6457 if (elf_tdata (obfd)->phdr[i].p_type == PT_GNU_STACK) 6458 { 6459 memcpy (&elf_tdata (obfd)->phdr[i], iphdr, sizeof (*iphdr)); 6460 6461 /* Rewrite the phdrs, since we're only called after they 6462 were first written. */ 6463 if (bfd_seek (obfd, (bfd_signed_vma) get_elf_backend_data (obfd) 6464 ->s->sizeof_ehdr, SEEK_SET) != 0 6465 || get_elf_backend_data (obfd)->s 6466 ->write_out_phdrs (obfd, elf_tdata (obfd)->phdr, 6467 elf_elfheader (obfd)->e_phnum) != 0) 6468 return FALSE; 6469 break; 6470 } 6471 6472 break; 6473 } 6474 6475 return TRUE; 6476} 6477 6478/* Merge backend specific data from an object file to the output 6479 object file when linking. */ 6480 6481static bfd_boolean 6482frv_elf_merge_private_bfd_data (ibfd, obfd) 6483 bfd *ibfd; 6484 bfd *obfd; 6485{ 6486 flagword old_flags, old_partial; 6487 flagword new_flags, new_partial; 6488 bfd_boolean error = FALSE; 6489 char new_opt[80]; 6490 char old_opt[80]; 6491 6492 new_opt[0] = old_opt[0] = '\0'; 6493 new_flags = elf_elfheader (ibfd)->e_flags; 6494 old_flags = elf_elfheader (obfd)->e_flags; 6495 6496 if (new_flags & EF_FRV_FDPIC) 6497 new_flags &= ~EF_FRV_PIC; 6498 6499#ifdef DEBUG 6500 (*_bfd_error_handler) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s", 6501 old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no", 6502 bfd_get_filename (ibfd)); 6503#endif 6504 6505 if (!elf_flags_init (obfd)) /* First call, no flags set. */ 6506 { 6507 elf_flags_init (obfd) = TRUE; 6508 old_flags = new_flags; 6509 } 6510 6511 else if (new_flags == old_flags) /* Compatible flags are ok. */ 6512 ; 6513 6514 else /* Possibly incompatible flags. */ 6515 { 6516 /* Warn if different # of gprs are used. Note, 0 means nothing is 6517 said about the size of gprs. */ 6518 new_partial = (new_flags & EF_FRV_GPR_MASK); 6519 old_partial = (old_flags & EF_FRV_GPR_MASK); 6520 if (new_partial == old_partial) 6521 ; 6522 6523 else if (new_partial == 0) 6524 ; 6525 6526 else if (old_partial == 0) 6527 old_flags |= new_partial; 6528 6529 else 6530 { 6531 switch (new_partial) 6532 { 6533 default: strcat (new_opt, " -mgpr-??"); break; 6534 case EF_FRV_GPR_32: strcat (new_opt, " -mgpr-32"); break; 6535 case EF_FRV_GPR_64: strcat (new_opt, " -mgpr-64"); break; 6536 } 6537 6538 switch (old_partial) 6539 { 6540 default: strcat (old_opt, " -mgpr-??"); break; 6541 case EF_FRV_GPR_32: strcat (old_opt, " -mgpr-32"); break; 6542 case EF_FRV_GPR_64: strcat (old_opt, " -mgpr-64"); break; 6543 } 6544 } 6545 6546 /* Warn if different # of fprs are used. Note, 0 means nothing is 6547 said about the size of fprs. */ 6548 new_partial = (new_flags & EF_FRV_FPR_MASK); 6549 old_partial = (old_flags & EF_FRV_FPR_MASK); 6550 if (new_partial == old_partial) 6551 ; 6552 6553 else if (new_partial == 0) 6554 ; 6555 6556 else if (old_partial == 0) 6557 old_flags |= new_partial; 6558 6559 else 6560 { 6561 switch (new_partial) 6562 { 6563 default: strcat (new_opt, " -mfpr-?"); break; 6564 case EF_FRV_FPR_32: strcat (new_opt, " -mfpr-32"); break; 6565 case EF_FRV_FPR_64: strcat (new_opt, " -mfpr-64"); break; 6566 case EF_FRV_FPR_NONE: strcat (new_opt, " -msoft-float"); break; 6567 } 6568 6569 switch (old_partial) 6570 { 6571 default: strcat (old_opt, " -mfpr-?"); break; 6572 case EF_FRV_FPR_32: strcat (old_opt, " -mfpr-32"); break; 6573 case EF_FRV_FPR_64: strcat (old_opt, " -mfpr-64"); break; 6574 case EF_FRV_FPR_NONE: strcat (old_opt, " -msoft-float"); break; 6575 } 6576 } 6577 6578 /* Warn if different dword support was used. Note, 0 means nothing is 6579 said about the dword support. */ 6580 new_partial = (new_flags & EF_FRV_DWORD_MASK); 6581 old_partial = (old_flags & EF_FRV_DWORD_MASK); 6582 if (new_partial == old_partial) 6583 ; 6584 6585 else if (new_partial == 0) 6586 ; 6587 6588 else if (old_partial == 0) 6589 old_flags |= new_partial; 6590 6591 else 6592 { 6593 switch (new_partial) 6594 { 6595 default: strcat (new_opt, " -mdword-?"); break; 6596 case EF_FRV_DWORD_YES: strcat (new_opt, " -mdword"); break; 6597 case EF_FRV_DWORD_NO: strcat (new_opt, " -mno-dword"); break; 6598 } 6599 6600 switch (old_partial) 6601 { 6602 default: strcat (old_opt, " -mdword-?"); break; 6603 case EF_FRV_DWORD_YES: strcat (old_opt, " -mdword"); break; 6604 case EF_FRV_DWORD_NO: strcat (old_opt, " -mno-dword"); break; 6605 } 6606 } 6607 6608 /* Or in flags that accumulate (ie, if one module uses it, mark that the 6609 feature is used. */ 6610 old_flags |= new_flags & (EF_FRV_DOUBLE 6611 | EF_FRV_MEDIA 6612 | EF_FRV_MULADD 6613 | EF_FRV_NON_PIC_RELOCS); 6614 6615 /* If any module was compiled without -G0, clear the G0 bit. */ 6616 old_flags = ((old_flags & ~ EF_FRV_G0) 6617 | (old_flags & new_flags & EF_FRV_G0)); 6618 6619 /* If any module was compiled without -mnopack, clear the mnopack bit. */ 6620 old_flags = ((old_flags & ~ EF_FRV_NOPACK) 6621 | (old_flags & new_flags & EF_FRV_NOPACK)); 6622 6623 /* We don't have to do anything if the pic flags are the same, or the new 6624 module(s) were compiled with -mlibrary-pic. */ 6625 new_partial = (new_flags & EF_FRV_PIC_FLAGS); 6626 old_partial = (old_flags & EF_FRV_PIC_FLAGS); 6627 if ((new_partial == old_partial) || ((new_partial & EF_FRV_LIBPIC) != 0)) 6628 ; 6629 6630 /* If the old module(s) were compiled with -mlibrary-pic, copy in the pic 6631 flags if any from the new module. */ 6632 else if ((old_partial & EF_FRV_LIBPIC) != 0) 6633 old_flags = (old_flags & ~ EF_FRV_PIC_FLAGS) | new_partial; 6634 6635 /* If we have mixtures of -fpic and -fPIC, or in both bits. */ 6636 else if (new_partial != 0 && old_partial != 0) 6637 old_flags |= new_partial; 6638 6639 /* One module was compiled for pic and the other was not, see if we have 6640 had any relocations that are not pic-safe. */ 6641 else 6642 { 6643 if ((old_flags & EF_FRV_NON_PIC_RELOCS) == 0) 6644 old_flags |= new_partial; 6645 else 6646 { 6647 old_flags &= ~ EF_FRV_PIC_FLAGS; 6648#ifndef FRV_NO_PIC_ERROR 6649 error = TRUE; 6650 (*_bfd_error_handler) 6651 (_("%s: compiled with %s and linked with modules that use non-pic relocations"), 6652 bfd_get_filename (ibfd), 6653 (new_flags & EF_FRV_BIGPIC) ? "-fPIC" : "-fpic"); 6654#endif 6655 } 6656 } 6657 6658 /* Warn if different cpu is used (allow a specific cpu to override 6659 the generic cpu). */ 6660 new_partial = (new_flags & EF_FRV_CPU_MASK); 6661 old_partial = (old_flags & EF_FRV_CPU_MASK); 6662 if (frv_elf_arch_extension_p (new_partial, old_partial)) 6663 ; 6664 6665 else if (frv_elf_arch_extension_p (old_partial, new_partial)) 6666 old_flags = (old_flags & ~EF_FRV_CPU_MASK) | new_partial; 6667 6668 else 6669 { 6670 switch (new_partial) 6671 { 6672 default: strcat (new_opt, " -mcpu=?"); break; 6673 case EF_FRV_CPU_GENERIC: strcat (new_opt, " -mcpu=frv"); break; 6674 case EF_FRV_CPU_SIMPLE: strcat (new_opt, " -mcpu=simple"); break; 6675 case EF_FRV_CPU_FR550: strcat (new_opt, " -mcpu=fr550"); break; 6676 case EF_FRV_CPU_FR500: strcat (new_opt, " -mcpu=fr500"); break; 6677 case EF_FRV_CPU_FR450: strcat (new_opt, " -mcpu=fr450"); break; 6678 case EF_FRV_CPU_FR405: strcat (new_opt, " -mcpu=fr405"); break; 6679 case EF_FRV_CPU_FR400: strcat (new_opt, " -mcpu=fr400"); break; 6680 case EF_FRV_CPU_FR300: strcat (new_opt, " -mcpu=fr300"); break; 6681 case EF_FRV_CPU_TOMCAT: strcat (new_opt, " -mcpu=tomcat"); break; 6682 } 6683 6684 switch (old_partial) 6685 { 6686 default: strcat (old_opt, " -mcpu=?"); break; 6687 case EF_FRV_CPU_GENERIC: strcat (old_opt, " -mcpu=frv"); break; 6688 case EF_FRV_CPU_SIMPLE: strcat (old_opt, " -mcpu=simple"); break; 6689 case EF_FRV_CPU_FR550: strcat (old_opt, " -mcpu=fr550"); break; 6690 case EF_FRV_CPU_FR500: strcat (old_opt, " -mcpu=fr500"); break; 6691 case EF_FRV_CPU_FR450: strcat (old_opt, " -mcpu=fr450"); break; 6692 case EF_FRV_CPU_FR405: strcat (old_opt, " -mcpu=fr405"); break; 6693 case EF_FRV_CPU_FR400: strcat (old_opt, " -mcpu=fr400"); break; 6694 case EF_FRV_CPU_FR300: strcat (old_opt, " -mcpu=fr300"); break; 6695 case EF_FRV_CPU_TOMCAT: strcat (old_opt, " -mcpu=tomcat"); break; 6696 } 6697 } 6698 6699 /* Print out any mismatches from above. */ 6700 if (new_opt[0]) 6701 { 6702 error = TRUE; 6703 (*_bfd_error_handler) 6704 (_("%s: compiled with %s and linked with modules compiled with %s"), 6705 bfd_get_filename (ibfd), new_opt, old_opt); 6706 } 6707 6708 /* Warn about any other mismatches */ 6709 new_partial = (new_flags & ~ EF_FRV_ALL_FLAGS); 6710 old_partial = (old_flags & ~ EF_FRV_ALL_FLAGS); 6711 if (new_partial != old_partial) 6712 { 6713 old_flags |= new_partial; 6714 error = TRUE; 6715 (*_bfd_error_handler) 6716 (_("%s: uses different unknown e_flags (0x%lx) fields than previous modules (0x%lx)"), 6717 bfd_get_filename (ibfd), (long)new_partial, (long)old_partial); 6718 } 6719 } 6720 6721 /* If the cpu is -mcpu=simple, then set the -mnopack bit. */ 6722 if ((old_flags & EF_FRV_CPU_MASK) == EF_FRV_CPU_SIMPLE) 6723 old_flags |= EF_FRV_NOPACK; 6724 6725 /* Update the old flags now with changes made above. */ 6726 old_partial = elf_elfheader (obfd)->e_flags & EF_FRV_CPU_MASK; 6727 elf_elfheader (obfd)->e_flags = old_flags; 6728 if (old_partial != (old_flags & EF_FRV_CPU_MASK)) 6729 bfd_default_set_arch_mach (obfd, bfd_arch_frv, elf32_frv_machine (obfd)); 6730 6731 if (((new_flags & EF_FRV_FDPIC) == 0) 6732 != (! IS_FDPIC (ibfd))) 6733 { 6734 error = TRUE; 6735 if (IS_FDPIC (obfd)) 6736 (*_bfd_error_handler) 6737 (_("%s: cannot link non-fdpic object file into fdpic executable"), 6738 bfd_get_filename (ibfd)); 6739 else 6740 (*_bfd_error_handler) 6741 (_("%s: cannot link fdpic object file into non-fdpic executable"), 6742 bfd_get_filename (ibfd)); 6743 } 6744 6745 if (error) 6746 bfd_set_error (bfd_error_bad_value); 6747 6748 return !error; 6749} 6750 6751 6752bfd_boolean 6753frv_elf_print_private_bfd_data (abfd, ptr) 6754 bfd *abfd; 6755 PTR ptr; 6756{ 6757 FILE *file = (FILE *) ptr; 6758 flagword flags; 6759 6760 BFD_ASSERT (abfd != NULL && ptr != NULL); 6761 6762 /* Print normal ELF private data. */ 6763 _bfd_elf_print_private_bfd_data (abfd, ptr); 6764 6765 flags = elf_elfheader (abfd)->e_flags; 6766 fprintf (file, _("private flags = 0x%lx:"), (long)flags); 6767 6768 switch (flags & EF_FRV_CPU_MASK) 6769 { 6770 default: break; 6771 case EF_FRV_CPU_SIMPLE: fprintf (file, " -mcpu=simple"); break; 6772 case EF_FRV_CPU_FR550: fprintf (file, " -mcpu=fr550"); break; 6773 case EF_FRV_CPU_FR500: fprintf (file, " -mcpu=fr500"); break; 6774 case EF_FRV_CPU_FR450: fprintf (file, " -mcpu=fr450"); break; 6775 case EF_FRV_CPU_FR405: fprintf (file, " -mcpu=fr405"); break; 6776 case EF_FRV_CPU_FR400: fprintf (file, " -mcpu=fr400"); break; 6777 case EF_FRV_CPU_FR300: fprintf (file, " -mcpu=fr300"); break; 6778 case EF_FRV_CPU_TOMCAT: fprintf (file, " -mcpu=tomcat"); break; 6779 } 6780 6781 switch (flags & EF_FRV_GPR_MASK) 6782 { 6783 default: break; 6784 case EF_FRV_GPR_32: fprintf (file, " -mgpr-32"); break; 6785 case EF_FRV_GPR_64: fprintf (file, " -mgpr-64"); break; 6786 } 6787 6788 switch (flags & EF_FRV_FPR_MASK) 6789 { 6790 default: break; 6791 case EF_FRV_FPR_32: fprintf (file, " -mfpr-32"); break; 6792 case EF_FRV_FPR_64: fprintf (file, " -mfpr-64"); break; 6793 case EF_FRV_FPR_NONE: fprintf (file, " -msoft-float"); break; 6794 } 6795 6796 switch (flags & EF_FRV_DWORD_MASK) 6797 { 6798 default: break; 6799 case EF_FRV_DWORD_YES: fprintf (file, " -mdword"); break; 6800 case EF_FRV_DWORD_NO: fprintf (file, " -mno-dword"); break; 6801 } 6802 6803 if (flags & EF_FRV_DOUBLE) 6804 fprintf (file, " -mdouble"); 6805 6806 if (flags & EF_FRV_MEDIA) 6807 fprintf (file, " -mmedia"); 6808 6809 if (flags & EF_FRV_MULADD) 6810 fprintf (file, " -mmuladd"); 6811 6812 if (flags & EF_FRV_PIC) 6813 fprintf (file, " -fpic"); 6814 6815 if (flags & EF_FRV_BIGPIC) 6816 fprintf (file, " -fPIC"); 6817 6818 if (flags & EF_FRV_LIBPIC) 6819 fprintf (file, " -mlibrary-pic"); 6820 6821 if (flags & EF_FRV_FDPIC) 6822 fprintf (file, " -mfdpic"); 6823 6824 if (flags & EF_FRV_NON_PIC_RELOCS) 6825 fprintf (file, " non-pic relocations"); 6826 6827 if (flags & EF_FRV_G0) 6828 fprintf (file, " -G0"); 6829 6830 fputc ('\n', file); 6831 return TRUE; 6832} 6833 6834 6835/* Support for core dump NOTE sections. */ 6836 6837static bfd_boolean 6838elf32_frv_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 6839{ 6840 int offset; 6841 unsigned int raw_size; 6842 6843 switch (note->descsz) 6844 { 6845 default: 6846 return FALSE; 6847 6848 /* The Linux/FRV elf_prstatus struct is 268 bytes long. The other 6849 hardcoded offsets and sizes listed below (and contained within 6850 this lexical block) refer to fields in the target's elf_prstatus 6851 struct. */ 6852 case 268: 6853 /* `pr_cursig' is at offset 12. */ 6854 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); 6855 6856 /* `pr_pid' is at offset 24. */ 6857 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); 6858 6859 /* `pr_reg' is at offset 72. */ 6860 offset = 72; 6861 6862 /* Most grok_prstatus implementations set `raw_size' to the size 6863 of the pr_reg field. For Linux/FRV, we set `raw_size' to be 6864 the size of `pr_reg' plus the size of `pr_exec_fdpic_loadmap' 6865 and `pr_interp_fdpic_loadmap', both of which (by design) 6866 immediately follow `pr_reg'. This will allow these fields to 6867 be viewed by GDB as registers. 6868 6869 `pr_reg' is 184 bytes long. `pr_exec_fdpic_loadmap' and 6870 `pr_interp_fdpic_loadmap' are 4 bytes each. */ 6871 raw_size = 184 + 4 + 4; 6872 6873 break; 6874 } 6875 6876 /* Make a ".reg/999" section. */ 6877 return _bfd_elfcore_make_pseudosection (abfd, ".reg", raw_size, 6878 note->descpos + offset); 6879} 6880 6881static bfd_boolean 6882elf32_frv_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 6883{ 6884 switch (note->descsz) 6885 { 6886 default: 6887 return FALSE; 6888 6889 /* The Linux/FRV elf_prpsinfo struct is 124 bytes long. */ 6890 case 124: 6891 6892 /* `pr_fname' is found at offset 28 and is 16 bytes long. */ 6893 elf_tdata (abfd)->core_program 6894 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); 6895 6896 /* `pr_psargs' is found at offset 44 and is 80 bytes long. */ 6897 elf_tdata (abfd)->core_command 6898 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); 6899 } 6900 6901 /* Note that for some reason, a spurious space is tacked 6902 onto the end of the args in some (at least one anyway) 6903 implementations, so strip it off if it exists. */ 6904 6905 { 6906 char *command = elf_tdata (abfd)->core_command; 6907 int n = strlen (command); 6908 6909 if (0 < n && command[n - 1] == ' ') 6910 command[n - 1] = '\0'; 6911 } 6912 6913 return TRUE; 6914} 6915#define ELF_ARCH bfd_arch_frv 6916#define ELF_MACHINE_CODE EM_CYGNUS_FRV 6917#define ELF_MAXPAGESIZE 0x1000 6918 6919#define TARGET_BIG_SYM bfd_elf32_frv_vec 6920#define TARGET_BIG_NAME "elf32-frv" 6921 6922#define elf_info_to_howto frv_info_to_howto_rela 6923#define elf_backend_relocate_section elf32_frv_relocate_section 6924#define elf_backend_gc_mark_hook elf32_frv_gc_mark_hook 6925#define elf_backend_gc_sweep_hook elf32_frv_gc_sweep_hook 6926#define elf_backend_check_relocs elf32_frv_check_relocs 6927#define elf_backend_object_p elf32_frv_object_p 6928#define elf_backend_add_symbol_hook elf32_frv_add_symbol_hook 6929 6930#define elf_backend_can_gc_sections 1 6931#define elf_backend_rela_normal 1 6932 6933#define bfd_elf32_bfd_reloc_type_lookup frv_reloc_type_lookup 6934#define bfd_elf32_bfd_set_private_flags frv_elf_set_private_flags 6935#define bfd_elf32_bfd_copy_private_bfd_data frv_elf_copy_private_bfd_data 6936#define bfd_elf32_bfd_merge_private_bfd_data frv_elf_merge_private_bfd_data 6937#define bfd_elf32_bfd_print_private_bfd_data frv_elf_print_private_bfd_data 6938 6939#define elf_backend_want_got_sym 1 6940#define elf_backend_got_header_size 0 6941#define elf_backend_want_got_plt 0 6942#define elf_backend_plt_readonly 1 6943#define elf_backend_want_plt_sym 0 6944#define elf_backend_plt_header_size 0 6945 6946#define elf_backend_finish_dynamic_sections \ 6947 elf32_frv_finish_dynamic_sections 6948 6949#define elf_backend_grok_prstatus elf32_frv_grok_prstatus 6950#define elf_backend_grok_psinfo elf32_frv_grok_psinfo 6951 6952#include "elf32-target.h" 6953 6954#undef ELF_MAXPAGESIZE 6955#define ELF_MAXPAGESIZE 0x4000 6956 6957#undef TARGET_BIG_SYM 6958#define TARGET_BIG_SYM bfd_elf32_frvfdpic_vec 6959#undef TARGET_BIG_NAME 6960#define TARGET_BIG_NAME "elf32-frvfdpic" 6961#undef elf32_bed 6962#define elf32_bed elf32_frvfdpic_bed 6963 6964#undef elf_info_to_howto_rel 6965#define elf_info_to_howto_rel frvfdpic_info_to_howto_rel 6966 6967#undef bfd_elf32_bfd_link_hash_table_create 6968#define bfd_elf32_bfd_link_hash_table_create \ 6969 frvfdpic_elf_link_hash_table_create 6970#undef elf_backend_always_size_sections 6971#define elf_backend_always_size_sections \ 6972 elf32_frvfdpic_always_size_sections 6973#undef elf_backend_modify_segment_map 6974#define elf_backend_modify_segment_map \ 6975 elf32_frvfdpic_modify_segment_map 6976#undef bfd_elf32_bfd_copy_private_bfd_data 6977#define bfd_elf32_bfd_copy_private_bfd_data \ 6978 elf32_frvfdpic_copy_private_bfd_data 6979 6980#undef elf_backend_create_dynamic_sections 6981#define elf_backend_create_dynamic_sections \ 6982 elf32_frvfdpic_create_dynamic_sections 6983#undef elf_backend_adjust_dynamic_symbol 6984#define elf_backend_adjust_dynamic_symbol \ 6985 elf32_frvfdpic_adjust_dynamic_symbol 6986#undef elf_backend_size_dynamic_sections 6987#define elf_backend_size_dynamic_sections \ 6988 elf32_frvfdpic_size_dynamic_sections 6989#undef bfd_elf32_bfd_relax_section 6990#define bfd_elf32_bfd_relax_section \ 6991 elf32_frvfdpic_relax_section 6992#undef elf_backend_finish_dynamic_symbol 6993#define elf_backend_finish_dynamic_symbol \ 6994 elf32_frvfdpic_finish_dynamic_symbol 6995#undef elf_backend_finish_dynamic_sections 6996#define elf_backend_finish_dynamic_sections \ 6997 elf32_frvfdpic_finish_dynamic_sections 6998 6999#undef elf_backend_can_make_relative_eh_frame 7000#define elf_backend_can_make_relative_eh_frame \ 7001 frvfdpic_elf_use_relative_eh_frame 7002#undef elf_backend_can_make_lsda_relative_eh_frame 7003#define elf_backend_can_make_lsda_relative_eh_frame \ 7004 frvfdpic_elf_use_relative_eh_frame 7005#undef elf_backend_encode_eh_address 7006#define elf_backend_encode_eh_address \ 7007 frvfdpic_elf_encode_eh_address 7008 7009#undef elf_backend_may_use_rel_p 7010#define elf_backend_may_use_rel_p 1 7011#undef elf_backend_may_use_rela_p 7012#define elf_backend_may_use_rela_p 1 7013/* We use REL for dynamic relocations only. */ 7014#undef elf_backend_default_use_rela_p 7015#define elf_backend_default_use_rela_p 1 7016 7017#undef elf_backend_omit_section_dynsym 7018#define elf_backend_omit_section_dynsym _frvfdpic_link_omit_section_dynsym 7019 7020#include "elf32-target.h" 7021