1 /* FRV-specific support for 32-bit ELF. 2 Copyright 2002, 2003, 2004 Free Software Foundation, Inc. 3 4 This file is part of BFD, the Binary File Descriptor library. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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. */ 29 static bfd_reloc_status_type elf32_frv_relocate_lo16 30 PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); 31 static bfd_reloc_status_type elf32_frv_relocate_hi16 32 PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); 33 static bfd_reloc_status_type elf32_frv_relocate_label24 34 PARAMS ((bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); 35 static bfd_reloc_status_type elf32_frv_relocate_gprel12 36 PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, 37 bfd_byte *, bfd_vma)); 38 static bfd_reloc_status_type elf32_frv_relocate_gprelu12 39 PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, 40 bfd_byte *, bfd_vma)); 41 static bfd_reloc_status_type elf32_frv_relocate_gprello 42 PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, 43 bfd_byte *, bfd_vma)); 44 static bfd_reloc_status_type elf32_frv_relocate_gprelhi 45 PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, 46 bfd_byte *, bfd_vma)); 47 static reloc_howto_type *frv_reloc_type_lookup 48 PARAMS ((bfd *, bfd_reloc_code_real_type)); 49 static void frv_info_to_howto_rela 50 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); 51 static 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 **)); 54 static bfd_boolean elf32_frv_add_symbol_hook 55 PARAMS (( bfd *, struct bfd_link_info *, Elf_Internal_Sym *, 56 const char **, flagword *, asection **, bfd_vma *)); 57 static bfd_reloc_status_type frv_final_link_relocate 58 PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, 59 Elf_Internal_Rela *, bfd_vma)); 60 static bfd_boolean elf32_frv_gc_sweep_hook 61 PARAMS ((bfd *, struct bfd_link_info *, asection *, const 62 Elf_Internal_Rela *)); 63 static 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 *)); 66 static bfd_boolean elf32_frv_check_relocs 67 PARAMS ((bfd *, struct bfd_link_info *, asection *, 68 const Elf_Internal_Rela *)); 69 static int elf32_frv_machine 70 PARAMS ((bfd *)); 71 static bfd_boolean elf32_frv_object_p 72 PARAMS ((bfd *)); 73 static bfd_boolean frv_elf_set_private_flags 74 PARAMS ((bfd *, flagword)); 75 static bfd_boolean frv_elf_copy_private_bfd_data 76 PARAMS ((bfd *, bfd *)); 77 static bfd_boolean frv_elf_merge_private_bfd_data 78 PARAMS ((bfd *, bfd *)); 79 static bfd_boolean frv_elf_print_private_bfd_data 80 PARAMS ((bfd *, PTR)); 81 82 static reloc_howto_type elf32_frv_howto_table [] = 83 { 84 /* This reloc does nothing. */ 85 HOWTO (R_FRV_NONE, /* type */ 86 0, /* rightshift */ 87 2, /* size (0 = byte, 1 = short, 2 = long) */ 88 32, /* bitsize */ 89 FALSE, /* pc_relative */ 90 0, /* bitpos */ 91 complain_overflow_bitfield, /* complain_on_overflow */ 92 bfd_elf_generic_reloc, /* special_function */ 93 "R_FRV_NONE", /* name */ 94 FALSE, /* partial_inplace */ 95 0, /* src_mask */ 96 0, /* dst_mask */ 97 FALSE), /* pcrel_offset */ 98 99 /* A 32 bit absolute relocation. */ 100 HOWTO (R_FRV_32, /* type */ 101 0, /* rightshift */ 102 2, /* size (0 = byte, 1 = short, 2 = long) */ 103 32, /* bitsize */ 104 FALSE, /* pc_relative */ 105 0, /* bitpos */ 106 complain_overflow_bitfield, /* complain_on_overflow */ 107 bfd_elf_generic_reloc, /* special_function */ 108 "R_FRV_32", /* name */ 109 FALSE, /* partial_inplace */ 110 0xffffffff, /* src_mask */ 111 0xffffffff, /* dst_mask */ 112 FALSE), /* pcrel_offset */ 113 114 /* A 16 bit pc-relative relocation. */ 115 HOWTO (R_FRV_LABEL16, /* type */ 116 2, /* rightshift */ 117 2, /* size (0 = byte, 1 = short, 2 = long) */ 118 16, /* bitsize */ 119 TRUE, /* pc_relative */ 120 0, /* bitpos */ 121 complain_overflow_signed, /* complain_on_overflow */ 122 bfd_elf_generic_reloc, /* special_function */ 123 "R_FRV_LABEL16", /* name */ 124 FALSE, /* partial_inplace */ 125 0xffff, /* src_mask */ 126 0xffff, /* dst_mask */ 127 TRUE), /* pcrel_offset */ 128 129 /* A 24-bit pc-relative relocation. */ 130 HOWTO (R_FRV_LABEL24, /* type */ 131 2, /* rightshift */ 132 2, /* size (0 = byte, 1 = short, 2 = long) */ 133 26, /* bitsize */ 134 TRUE, /* pc_relative */ 135 0, /* bitpos */ 136 complain_overflow_bitfield, /* complain_on_overflow */ 137 bfd_elf_generic_reloc, /* special_function */ 138 "R_FRV_LABEL24", /* name */ 139 FALSE, /* partial_inplace */ 140 0x7e03ffff, /* src_mask */ 141 0x7e03ffff, /* dst_mask */ 142 TRUE), /* pcrel_offset */ 143 144 HOWTO (R_FRV_LO16, /* type */ 145 0, /* rightshift */ 146 2, /* size (0 = byte, 1 = short, 2 = long) */ 147 16, /* bitsize */ 148 FALSE, /* pc_relative */ 149 0, /* bitpos */ 150 complain_overflow_dont, /* complain_on_overflow */ 151 bfd_elf_generic_reloc, /* special_function */ 152 "R_FRV_LO16", /* name */ 153 FALSE, /* partial_inplace */ 154 0xffff, /* src_mask */ 155 0xffff, /* dst_mask */ 156 FALSE), /* pcrel_offset */ 157 158 HOWTO (R_FRV_HI16, /* type */ 159 0, /* rightshift */ 160 2, /* size (0 = byte, 1 = short, 2 = long) */ 161 16, /* bitsize */ 162 FALSE, /* pc_relative */ 163 0, /* bitpos */ 164 complain_overflow_dont, /* complain_on_overflow */ 165 bfd_elf_generic_reloc, /* special_function */ 166 "R_FRV_HI16", /* name */ 167 FALSE, /* partial_inplace */ 168 0xffff, /* src_mask */ 169 0xffff, /* dst_mask */ 170 FALSE), /* pcrel_offset */ 171 172 HOWTO (R_FRV_GPREL12, /* type */ 173 0, /* rightshift */ 174 2, /* size (0 = byte, 1 = short, 2 = long) */ 175 12, /* bitsize */ 176 FALSE, /* pc_relative */ 177 0, /* bitpos */ 178 complain_overflow_dont, /* complain_on_overflow */ 179 bfd_elf_generic_reloc, /* special_function */ 180 "R_FRV_GPREL12", /* name */ 181 FALSE, /* partial_inplace */ 182 0xfff, /* src_mask */ 183 0xfff, /* dst_mask */ 184 FALSE), /* pcrel_offset */ 185 186 HOWTO (R_FRV_GPRELU12, /* type */ 187 0, /* rightshift */ 188 2, /* size (0 = byte, 1 = short, 2 = long) */ 189 12, /* bitsize */ 190 FALSE, /* pc_relative */ 191 0, /* bitpos */ 192 complain_overflow_dont, /* complain_on_overflow */ 193 bfd_elf_generic_reloc, /* special_function */ 194 "R_FRV_GPRELU12", /* name */ 195 FALSE, /* partial_inplace */ 196 0xfff, /* src_mask */ 197 0x3f03f, /* dst_mask */ 198 FALSE), /* pcrel_offset */ 199 200 HOWTO (R_FRV_GPREL32, /* type */ 201 0, /* rightshift */ 202 2, /* size (0 = byte, 1 = short, 2 = long) */ 203 32, /* bitsize */ 204 FALSE, /* pc_relative */ 205 0, /* bitpos */ 206 complain_overflow_dont, /* complain_on_overflow */ 207 bfd_elf_generic_reloc, /* special_function */ 208 "R_FRV_GPREL32", /* name */ 209 FALSE, /* partial_inplace */ 210 0xffffffff, /* src_mask */ 211 0xffffffff, /* dst_mask */ 212 FALSE), /* pcrel_offset */ 213 214 HOWTO (R_FRV_GPRELHI, /* type */ 215 0, /* rightshift */ 216 2, /* size (0 = byte, 1 = short, 2 = long) */ 217 16, /* bitsize */ 218 FALSE, /* pc_relative */ 219 0, /* bitpos */ 220 complain_overflow_dont, /* complain_on_overflow */ 221 bfd_elf_generic_reloc, /* special_function */ 222 "R_FRV_GPRELHI", /* name */ 223 FALSE, /* partial_inplace */ 224 0xffff, /* src_mask */ 225 0xffff, /* dst_mask */ 226 FALSE), /* pcrel_offset */ 227 228 HOWTO (R_FRV_GPRELLO, /* type */ 229 0, /* rightshift */ 230 2, /* size (0 = byte, 1 = short, 2 = long) */ 231 16, /* bitsize */ 232 FALSE, /* pc_relative */ 233 0, /* bitpos */ 234 complain_overflow_dont, /* complain_on_overflow */ 235 bfd_elf_generic_reloc, /* special_function */ 236 "R_FRV_GPRELLO", /* name */ 237 FALSE, /* partial_inplace */ 238 0xffff, /* src_mask */ 239 0xffff, /* dst_mask */ 240 FALSE), /* pcrel_offset */ 241 242 /* A 12-bit signed operand with the GOT offset for the address of 243 the symbol. */ 244 HOWTO (R_FRV_GOT12, /* type */ 245 0, /* rightshift */ 246 2, /* size (0 = byte, 1 = short, 2 = long) */ 247 12, /* bitsize */ 248 FALSE, /* pc_relative */ 249 0, /* bitpos */ 250 complain_overflow_signed, /* complain_on_overflow */ 251 bfd_elf_generic_reloc, /* special_function */ 252 "R_FRV_GOT12", /* name */ 253 FALSE, /* partial_inplace */ 254 0xfff, /* src_mask */ 255 0xfff, /* dst_mask */ 256 FALSE), /* pcrel_offset */ 257 258 /* The upper 16 bits of the GOT offset for the address of the 259 symbol. */ 260 HOWTO (R_FRV_GOTHI, /* type */ 261 0, /* rightshift */ 262 2, /* size (0 = byte, 1 = short, 2 = long) */ 263 16, /* bitsize */ 264 FALSE, /* pc_relative */ 265 0, /* bitpos */ 266 complain_overflow_dont, /* complain_on_overflow */ 267 bfd_elf_generic_reloc, /* special_function */ 268 "R_FRV_GOTHI", /* name */ 269 FALSE, /* partial_inplace */ 270 0xffff, /* src_mask */ 271 0xffff, /* dst_mask */ 272 FALSE), /* pcrel_offset */ 273 274 /* The lower 16 bits of the GOT offset for the address of the 275 symbol. */ 276 HOWTO (R_FRV_GOTLO, /* type */ 277 0, /* rightshift */ 278 2, /* size (0 = byte, 1 = short, 2 = long) */ 279 16, /* bitsize */ 280 FALSE, /* pc_relative */ 281 0, /* bitpos */ 282 complain_overflow_dont, /* complain_on_overflow */ 283 bfd_elf_generic_reloc, /* special_function */ 284 "R_FRV_GOTLO", /* name */ 285 FALSE, /* partial_inplace */ 286 0xffff, /* src_mask */ 287 0xffff, /* dst_mask */ 288 FALSE), /* pcrel_offset */ 289 290 /* The 32-bit address of the canonical descriptor of a function. */ 291 HOWTO (R_FRV_FUNCDESC, /* type */ 292 0, /* rightshift */ 293 2, /* size (0 = byte, 1 = short, 2 = long) */ 294 32, /* bitsize */ 295 FALSE, /* pc_relative */ 296 0, /* bitpos */ 297 complain_overflow_bitfield, /* complain_on_overflow */ 298 bfd_elf_generic_reloc, /* special_function */ 299 "R_FRV_FUNCDESC", /* name */ 300 FALSE, /* partial_inplace */ 301 0xffffffff, /* src_mask */ 302 0xffffffff, /* dst_mask */ 303 FALSE), /* pcrel_offset */ 304 305 /* A 12-bit signed operand with the GOT offset for the address of 306 canonical descriptor of a function. */ 307 HOWTO (R_FRV_FUNCDESC_GOT12, /* type */ 308 0, /* rightshift */ 309 2, /* size (0 = byte, 1 = short, 2 = long) */ 310 12, /* bitsize */ 311 FALSE, /* pc_relative */ 312 0, /* bitpos */ 313 complain_overflow_signed, /* complain_on_overflow */ 314 bfd_elf_generic_reloc, /* special_function */ 315 "R_FRV_FUNCDESC_GOT12", /* name */ 316 FALSE, /* partial_inplace */ 317 0xfff, /* src_mask */ 318 0xfff, /* dst_mask */ 319 FALSE), /* pcrel_offset */ 320 321 /* The upper 16 bits of the GOT offset for the address of the 322 canonical descriptor of a function. */ 323 HOWTO (R_FRV_FUNCDESC_GOTHI, /* type */ 324 0, /* rightshift */ 325 2, /* size (0 = byte, 1 = short, 2 = long) */ 326 16, /* bitsize */ 327 FALSE, /* pc_relative */ 328 0, /* bitpos */ 329 complain_overflow_dont, /* complain_on_overflow */ 330 bfd_elf_generic_reloc, /* special_function */ 331 "R_FRV_FUNCDESC_GOTHI", /* name */ 332 FALSE, /* partial_inplace */ 333 0xffff, /* src_mask */ 334 0xffff, /* dst_mask */ 335 FALSE), /* pcrel_offset */ 336 337 /* The lower 16 bits of the GOT offset for the address of the 338 canonical descriptor of a function. */ 339 HOWTO (R_FRV_FUNCDESC_GOTLO, /* type */ 340 0, /* rightshift */ 341 2, /* size (0 = byte, 1 = short, 2 = long) */ 342 16, /* bitsize */ 343 FALSE, /* pc_relative */ 344 0, /* bitpos */ 345 complain_overflow_dont, /* complain_on_overflow */ 346 bfd_elf_generic_reloc, /* special_function */ 347 "R_FRV_FUNCDESC_GOTLO", /* name */ 348 FALSE, /* partial_inplace */ 349 0xffff, /* src_mask */ 350 0xffff, /* dst_mask */ 351 FALSE), /* pcrel_offset */ 352 353 /* The 32-bit address of the canonical descriptor of a function. */ 354 HOWTO (R_FRV_FUNCDESC_VALUE, /* type */ 355 0, /* rightshift */ 356 2, /* size (0 = byte, 1 = short, 2 = long) */ 357 64, /* bitsize */ 358 FALSE, /* pc_relative */ 359 0, /* bitpos */ 360 complain_overflow_bitfield, /* complain_on_overflow */ 361 bfd_elf_generic_reloc, /* special_function */ 362 "R_FRV_FUNCDESC_VALUE", /* name */ 363 FALSE, /* partial_inplace */ 364 0xffffffff, /* src_mask */ 365 0xffffffff, /* dst_mask */ 366 FALSE), /* pcrel_offset */ 367 368 /* A 12-bit signed operand with the GOT offset for the address of 369 canonical descriptor of a function. */ 370 HOWTO (R_FRV_FUNCDESC_GOTOFF12, /* type */ 371 0, /* rightshift */ 372 2, /* size (0 = byte, 1 = short, 2 = long) */ 373 12, /* bitsize */ 374 FALSE, /* pc_relative */ 375 0, /* bitpos */ 376 complain_overflow_signed, /* complain_on_overflow */ 377 bfd_elf_generic_reloc, /* special_function */ 378 "R_FRV_FUNCDESC_GOTOFF12", /* name */ 379 FALSE, /* partial_inplace */ 380 0xfff, /* src_mask */ 381 0xfff, /* dst_mask */ 382 FALSE), /* pcrel_offset */ 383 384 /* The upper 16 bits of the GOT offset for the address of the 385 canonical descriptor of a function. */ 386 HOWTO (R_FRV_FUNCDESC_GOTOFFHI, /* type */ 387 0, /* rightshift */ 388 2, /* size (0 = byte, 1 = short, 2 = long) */ 389 16, /* bitsize */ 390 FALSE, /* pc_relative */ 391 0, /* bitpos */ 392 complain_overflow_dont, /* complain_on_overflow */ 393 bfd_elf_generic_reloc, /* special_function */ 394 "R_FRV_FUNCDESC_GOTOFFHI", /* name */ 395 FALSE, /* partial_inplace */ 396 0xffff, /* src_mask */ 397 0xffff, /* dst_mask */ 398 FALSE), /* pcrel_offset */ 399 400 /* The lower 16 bits of the GOT offset for the address of the 401 canonical descriptor of a function. */ 402 HOWTO (R_FRV_FUNCDESC_GOTOFFLO, /* type */ 403 0, /* rightshift */ 404 2, /* size (0 = byte, 1 = short, 2 = long) */ 405 16, /* bitsize */ 406 FALSE, /* pc_relative */ 407 0, /* bitpos */ 408 complain_overflow_dont, /* complain_on_overflow */ 409 bfd_elf_generic_reloc, /* special_function */ 410 "R_FRV_FUNCDESC_GOTOFFLO", /* name */ 411 FALSE, /* partial_inplace */ 412 0xffff, /* src_mask */ 413 0xffff, /* dst_mask */ 414 FALSE), /* pcrel_offset */ 415 416 /* A 12-bit signed operand with the GOT offset for the address of 417 the symbol. */ 418 HOWTO (R_FRV_GOTOFF12, /* type */ 419 0, /* rightshift */ 420 2, /* size (0 = byte, 1 = short, 2 = long) */ 421 12, /* bitsize */ 422 FALSE, /* pc_relative */ 423 0, /* bitpos */ 424 complain_overflow_signed, /* complain_on_overflow */ 425 bfd_elf_generic_reloc, /* special_function */ 426 "R_FRV_GOTOFF12", /* name */ 427 FALSE, /* partial_inplace */ 428 0xfff, /* src_mask */ 429 0xfff, /* dst_mask */ 430 FALSE), /* pcrel_offset */ 431 432 /* The upper 16 bits of the GOT offset for the address of the 433 symbol. */ 434 HOWTO (R_FRV_GOTOFFHI, /* type */ 435 0, /* rightshift */ 436 2, /* size (0 = byte, 1 = short, 2 = long) */ 437 16, /* bitsize */ 438 FALSE, /* pc_relative */ 439 0, /* bitpos */ 440 complain_overflow_dont, /* complain_on_overflow */ 441 bfd_elf_generic_reloc, /* special_function */ 442 "R_FRV_GOTOFFHI", /* name */ 443 FALSE, /* partial_inplace */ 444 0xffff, /* src_mask */ 445 0xffff, /* dst_mask */ 446 FALSE), /* pcrel_offset */ 447 448 /* The lower 16 bits of the GOT offset for the address of the 449 symbol. */ 450 HOWTO (R_FRV_GOTOFFLO, /* type */ 451 0, /* rightshift */ 452 2, /* size (0 = byte, 1 = short, 2 = long) */ 453 16, /* bitsize */ 454 FALSE, /* pc_relative */ 455 0, /* bitpos */ 456 complain_overflow_dont, /* complain_on_overflow */ 457 bfd_elf_generic_reloc, /* special_function */ 458 "R_FRV_GOTOFFLO", /* name */ 459 FALSE, /* partial_inplace */ 460 0xffff, /* src_mask */ 461 0xffff, /* dst_mask */ 462 FALSE), /* pcrel_offset */ 463 464 }; 465 466 /* GNU extension to record C++ vtable hierarchy. */ 467 static reloc_howto_type elf32_frv_vtinherit_howto = 468 HOWTO (R_FRV_GNU_VTINHERIT, /* type */ 469 0, /* rightshift */ 470 2, /* size (0 = byte, 1 = short, 2 = long) */ 471 0, /* bitsize */ 472 FALSE, /* pc_relative */ 473 0, /* bitpos */ 474 complain_overflow_dont, /* complain_on_overflow */ 475 NULL, /* special_function */ 476 "R_FRV_GNU_VTINHERIT", /* name */ 477 FALSE, /* partial_inplace */ 478 0, /* src_mask */ 479 0, /* dst_mask */ 480 FALSE); /* pcrel_offset */ 481 482 /* GNU extension to record C++ vtable member usage. */ 483 static reloc_howto_type elf32_frv_vtentry_howto = 484 HOWTO (R_FRV_GNU_VTENTRY, /* type */ 485 0, /* rightshift */ 486 2, /* size (0 = byte, 1 = short, 2 = long) */ 487 0, /* bitsize */ 488 FALSE, /* pc_relative */ 489 0, /* bitpos */ 490 complain_overflow_dont, /* complain_on_overflow */ 491 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 492 "R_FRV_GNU_VTENTRY", /* name */ 493 FALSE, /* partial_inplace */ 494 0, /* src_mask */ 495 0, /* dst_mask */ 496 FALSE); /* pcrel_offset */ 497 498 /* The following 3 relocations are REL. The only difference to the 499 entries in the table above are that partial_inplace is TRUE. */ 500 static reloc_howto_type elf32_frv_rel_32_howto = 501 HOWTO (R_FRV_32, /* type */ 502 0, /* rightshift */ 503 2, /* size (0 = byte, 1 = short, 2 = long) */ 504 32, /* bitsize */ 505 FALSE, /* pc_relative */ 506 0, /* bitpos */ 507 complain_overflow_bitfield, /* complain_on_overflow */ 508 bfd_elf_generic_reloc, /* special_function */ 509 "R_FRV_32", /* name */ 510 TRUE, /* partial_inplace */ 511 0xffffffff, /* src_mask */ 512 0xffffffff, /* dst_mask */ 513 FALSE); /* pcrel_offset */ 514 515 static reloc_howto_type elf32_frv_rel_funcdesc_howto = 516 HOWTO (R_FRV_FUNCDESC, /* type */ 517 0, /* rightshift */ 518 2, /* size (0 = byte, 1 = short, 2 = long) */ 519 32, /* bitsize */ 520 FALSE, /* pc_relative */ 521 0, /* bitpos */ 522 complain_overflow_bitfield, /* complain_on_overflow */ 523 bfd_elf_generic_reloc, /* special_function */ 524 "R_FRV_FUNCDESC", /* name */ 525 TRUE, /* partial_inplace */ 526 0xffffffff, /* src_mask */ 527 0xffffffff, /* dst_mask */ 528 FALSE); /* pcrel_offset */ 529 530 static reloc_howto_type elf32_frv_rel_funcdesc_value_howto = 531 HOWTO (R_FRV_FUNCDESC_VALUE, /* type */ 532 0, /* rightshift */ 533 2, /* size (0 = byte, 1 = short, 2 = long) */ 534 64, /* bitsize */ 535 FALSE, /* pc_relative */ 536 0, /* bitpos */ 537 complain_overflow_bitfield, /* complain_on_overflow */ 538 bfd_elf_generic_reloc, /* special_function */ 539 "R_FRV_FUNCDESC_VALUE", /* name */ 540 TRUE, /* partial_inplace */ 541 0xffffffff, /* src_mask */ 542 0xffffffff, /* dst_mask */ 543 FALSE); /* pcrel_offset */ 544 545 546 /* Map BFD reloc types to FRV ELF reloc types. */ 547 #if 0 548 struct frv_reloc_map 549 { 550 unsigned int bfd_reloc_val; 551 unsigned int frv_reloc_val; 552 }; 553 554 static const struct frv_reloc_map frv_reloc_map [] = 555 { 556 { BFD_RELOC_NONE, R_FRV_NONE }, 557 { BFD_RELOC_32, R_FRV_32 }, 558 { BFD_RELOC_FRV_LABEL16, R_FRV_LABEL16 }, 559 { BFD_RELOC_FRV_LABEL24, R_FRV_LABEL24 }, 560 { BFD_RELOC_FRV_LO16, R_FRV_LO16 }, 561 { BFD_RELOC_FRV_HI16, R_FRV_HI16 }, 562 { BFD_RELOC_FRV_GPREL12, R_FRV_GPREL12 }, 563 { BFD_RELOC_FRV_GPRELU12, R_FRV_GPRELU12 }, 564 { BFD_RELOC_FRV_GPREL32, R_FRV_GPREL32 }, 565 { BFD_RELOC_FRV_GPRELHI, R_FRV_GPRELHI }, 566 { BFD_RELOC_FRV_GPRELLO, R_FRV_GPRELLO }, 567 { BFD_RELOC_FRV_GOT12, R_FRV_GOT12 }, 568 { BFD_RELOC_FRV_GOTHI, R_FRV_GOTHI }, 569 { BFD_RELOC_FRV_GOTLO, R_FRV_GOTLO }, 570 { BFD_RELOC_FRV_FUNCDESC, R_FRV_FUNCDESC }, 571 { BFD_RELOC_FRV_FUNCDESC_GOT12, R_FRV_FUNCDESC_GOT12 }, 572 { BFD_RELOC_FRV_FUNCDESC_GOTHI, R_FRV_FUNCDESC_GOTHI }, 573 { BFD_RELOC_FRV_FUNCDESC_GOTLO, R_FRV_FUNCDESC_GOTLO }, 574 { BFD_RELOC_FRV_FUNCDESC_VALUE, R_FRV_FUNCDESC_VALUE }, 575 { BFD_RELOC_FRV_FUNCDESC_GOTOFF12, R_FRV_FUNCDESC_GOTOFF12 }, 576 { BFD_RELOC_FRV_FUNCDESC_GOTOFFHI, R_FRV_FUNCDESC_GOTOFFHI }, 577 { BFD_RELOC_FRV_FUNCDESC_GOTOFFLO, R_FRV_FUNCDESC_GOTOFFLO }, 578 { BFD_RELOC_FRV_GOTOFF12, R_FRV_GOTOFF12 }, 579 { BFD_RELOC_FRV_GOTOFFHI, R_FRV_GOTOFFHI }, 580 { BFD_RELOC_FRV_GOTOFFLO, R_FRV_GOTOFFLO }, 581 { BFD_RELOC_VTABLE_INHERIT, R_FRV_GNU_VTINHERIT }, 582 { BFD_RELOC_VTABLE_ENTRY, R_FRV_GNU_VTENTRY }, 583 }; 584 #endif 585 586 extern const bfd_target bfd_elf32_frvfdpic_vec; 587 #define IS_FDPIC(bfd) ((bfd)->xvec == &bfd_elf32_frvfdpic_vec) 588 589 /* An extension of the elf hash table data structure, containing some 590 additional FRV-specific data. */ 591 struct frvfdpic_elf_link_hash_table 592 { 593 struct elf_link_hash_table elf; 594 595 /* A pointer to the .got section. */ 596 asection *sgot; 597 /* A pointer to the .rel.got section. */ 598 asection *sgotrel; 599 /* A pointer to the .rofixup section. */ 600 asection *sgotfixup; 601 /* A pointer to the .plt section. */ 602 asection *splt; 603 /* A pointer to the .rel.plt section. */ 604 asection *spltrel; 605 /* GOT base offset. */ 606 bfd_vma got0; 607 /* Location of the first non-lazy PLT entry, i.e., the number of 608 bytes taken by lazy PLT entries. */ 609 bfd_vma plt0; 610 /* A hash table holding information about which symbols were 611 referenced with which PIC-related relocations. */ 612 struct htab *relocs_info; 613 }; 614 615 /* Get the FRV ELF linker hash table from a link_info structure. */ 616 617 #define frvfdpic_hash_table(info) \ 618 ((struct frvfdpic_elf_link_hash_table *) ((info)->hash)) 619 620 #define frvfdpic_got_section(info) \ 621 (frvfdpic_hash_table (info)->sgot) 622 #define frvfdpic_gotrel_section(info) \ 623 (frvfdpic_hash_table (info)->sgotrel) 624 #define frvfdpic_gotfixup_section(info) \ 625 (frvfdpic_hash_table (info)->sgotfixup) 626 #define frvfdpic_plt_section(info) \ 627 (frvfdpic_hash_table (info)->splt) 628 #define frvfdpic_pltrel_section(info) \ 629 (frvfdpic_hash_table (info)->spltrel) 630 #define frvfdpic_relocs_info(info) \ 631 (frvfdpic_hash_table (info)->relocs_info) 632 #define frvfdpic_got_initial_offset(info) \ 633 (frvfdpic_hash_table (info)->got0) 634 #define frvfdpic_plt_initial_offset(info) \ 635 (frvfdpic_hash_table (info)->plt0) 636 637 /* Create an FRV ELF linker hash table. */ 638 639 static struct bfd_link_hash_table * 640 frvfdpic_elf_link_hash_table_create (bfd *abfd) 641 { 642 struct frvfdpic_elf_link_hash_table *ret; 643 bfd_size_type amt = sizeof (struct frvfdpic_elf_link_hash_table); 644 645 ret = bfd_zalloc (abfd, amt); 646 if (ret == NULL) 647 return NULL; 648 649 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, 650 _bfd_elf_link_hash_newfunc)) 651 { 652 free (ret); 653 return NULL; 654 } 655 656 return &ret->elf.root; 657 } 658 659 /* Decide whether a reference to a symbol can be resolved locally or 660 not. If the symbol is protected, we want the local address, but 661 its function descriptor must be assigned by the dynamic linker. */ 662 #define FRVFDPIC_SYM_LOCAL(INFO, H) \ 663 (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \ 664 || ! elf_hash_table (INFO)->dynamic_sections_created \ 665 || (/* The condition below is an ugly hack to get .scommon data to 666 be regarded as local. For some reason the 667 ELF_LINK_HASH_DEF_REGULAR bit is not set on such common 668 symbols, and the SEC_IS_COMMON bit is not set any longer 669 when we need to perform this test. Hopefully this 670 approximation is good enough. */ \ 671 ((H)->root.type == bfd_link_hash_defined \ 672 || (H)->root.type == bfd_link_hash_defweak) \ 673 && (H)->root.u.def.section->output_section \ 674 && ((H)->root.u.def.section->flags & SEC_LINKER_CREATED))) 675 #define FRVFDPIC_FUNCDESC_LOCAL(INFO, H) \ 676 ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created) 677 678 /* This structure collects information on what kind of GOT, PLT or 679 function descriptors are required by relocations that reference a 680 certain symbol. */ 681 struct frvfdpic_relocs_info 682 { 683 /* The index of the symbol, as stored in the relocation r_info, if 684 we have a local symbol; -1 otherwise. */ 685 long symndx; 686 union 687 { 688 /* The input bfd in which the symbol is defined, if it's a local 689 symbol. */ 690 bfd *abfd; 691 /* If symndx == -1, the hash table entry corresponding to a global 692 symbol (even if it turns out to bind locally, in which case it 693 should ideally be replaced with section's symndx + addend). */ 694 struct elf_link_hash_entry *h; 695 } d; 696 /* The addend of the relocation that references the symbol. */ 697 bfd_vma addend; 698 699 /* The fields above are used to identify an entry. The fields below 700 contain information on how an entry is used and, later on, which 701 locations it was assigned. */ 702 /* The following 3 fields record whether the symbol+addend above was 703 ever referenced with a GOT relocation. The 12 suffix indicates a 704 GOT12 relocation; los is used for GOTLO relocations that are not 705 matched by a GOTHI relocation; hilo is used for GOTLO/GOTHI 706 pairs. */ 707 unsigned got12:1; 708 unsigned gotlos:1; 709 unsigned gothilo:1; 710 /* Whether a FUNCDESC relocation references symbol+addend. */ 711 unsigned fd:1; 712 /* Whether a FUNCDESC_GOT relocation references symbol+addend. */ 713 unsigned fdgot12:1; 714 unsigned fdgotlos:1; 715 unsigned fdgothilo:1; 716 /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */ 717 unsigned fdgoff12:1; 718 unsigned fdgofflos:1; 719 unsigned fdgoffhilo:1; 720 /* Whether symbol+addend is referenced with GOTOFF12, GOTOFFLO or 721 GOTOFFHI relocations. The addend doesn't really matter, since we 722 envision that this will only be used to check whether the symbol 723 is mapped to the same segment as the got. */ 724 unsigned gotoff:1; 725 /* Whether symbol+addend is referenced by a LABEL24 relocation. */ 726 unsigned call:1; 727 /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE 728 relocation. */ 729 unsigned sym:1; 730 /* Whether we need a PLT entry for a symbol. Should be implied by 731 something like: 732 (call && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h)) */ 733 unsigned plt:1; 734 /* Whether a function descriptor should be created in this link unit 735 for symbol+addend. Should be implied by something like: 736 (plt || fdgotoff12 || fdgotofflos || fdgotofflohi 737 || ((fd || fdgot12 || fdgotlos || fdgothilo) 738 && (symndx != -1 || FRVFDPIC_FUNCDESC_LOCAL (info, d.h)))) */ 739 unsigned privfd:1; 740 /* Whether a lazy PLT entry is needed for this symbol+addend. 741 Should be implied by something like: 742 (privfd && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h) 743 && ! (info->flags & DF_BIND_NOW)) */ 744 unsigned lazyplt:1; 745 /* Whether we've already emitted GOT relocations and PLT entries as 746 needed for this symbol. */ 747 unsigned done:1; 748 749 /* The number of R_FRV_32, R_FRV_FUNCDESC and R_FRV_FUNCDESC_VALUE 750 relocations referencing the symbol. */ 751 unsigned relocs32, relocsfd, relocsfdv; 752 753 /* The number of .rofixups entries and dynamic relocations allocated 754 for this symbol, minus any that might have already been used. */ 755 unsigned fixups, dynrelocs; 756 757 /* The offsets of the GOT entries assigned to symbol+addend, to the 758 function descriptor's address, and to a function descriptor, 759 respectively. Should be zero if unassigned. The offsets are 760 counted from the value that will be assigned to the PIC register, 761 not from the beginning of the .got section. */ 762 bfd_signed_vma got_entry, fdgot_entry, fd_entry; 763 /* The offsets of the PLT entries assigned to symbol+addend, 764 non-lazy and lazy, respectively. If unassigned, should be 765 (bfd_vma)-1. */ 766 bfd_vma plt_entry, lzplt_entry; 767 }; 768 769 /* Compute a hash with the key fields of an frvfdpic_relocs_info entry. */ 770 static hashval_t 771 frvfdpic_relocs_info_hash (const void *entry_) 772 { 773 const struct frvfdpic_relocs_info *entry = entry_; 774 775 return (entry->symndx == -1 776 ? entry->d.h->root.root.hash 777 : entry->symndx + entry->d.abfd->id * 257) + entry->addend; 778 } 779 780 /* Test whether the key fields of two frvfdpic_relocs_info entries are 781 identical. */ 782 static int 783 frvfdpic_relocs_info_eq (const void *entry1, const void *entry2) 784 { 785 const struct frvfdpic_relocs_info *e1 = entry1; 786 const struct frvfdpic_relocs_info *e2 = entry2; 787 788 return e1->symndx == e2->symndx && e1->addend == e2->addend 789 && (e1->symndx == -1 ? e1->d.h == e2->d.h : e1->d.abfd == e2->d.abfd); 790 } 791 792 /* Find or create an entry in a hash table HT that matches the key 793 fields of the given ENTRY. If it's not found, memory for a new 794 entry is allocated in ABFD's obstack. */ 795 static struct frvfdpic_relocs_info * 796 frvfdpic_relocs_info_find (struct htab *ht, 797 bfd *abfd, 798 const struct frvfdpic_relocs_info *entry, 799 enum insert_option insert) 800 { 801 struct frvfdpic_relocs_info **loc = 802 (struct frvfdpic_relocs_info **) htab_find_slot (ht, entry, insert); 803 804 if (! loc) 805 return NULL; 806 807 if (*loc) 808 return *loc; 809 810 *loc = bfd_zalloc (abfd, sizeof (**loc)); 811 812 if (! *loc) 813 return *loc; 814 815 (*loc)->symndx = entry->symndx; 816 (*loc)->d = entry->d; 817 (*loc)->addend = entry->addend; 818 (*loc)->plt_entry = (bfd_vma)-1; 819 (*loc)->lzplt_entry = (bfd_vma)-1; 820 821 return *loc; 822 } 823 824 /* Obtain the address of the entry in HT associated with H's symbol + 825 addend, creating a new entry if none existed. ABFD is only used 826 for memory allocation purposes. */ 827 inline static struct frvfdpic_relocs_info * 828 frvfdpic_relocs_info_for_global (struct htab *ht, 829 bfd *abfd, 830 struct elf_link_hash_entry *h, 831 bfd_vma addend, 832 enum insert_option insert) 833 { 834 struct frvfdpic_relocs_info entry; 835 836 entry.symndx = -1; 837 entry.d.h = h; 838 entry.addend = addend; 839 840 return frvfdpic_relocs_info_find (ht, abfd, &entry, insert); 841 } 842 843 /* Obtain the address of the entry in HT associated with the SYMNDXth 844 local symbol of the input bfd ABFD, plus the addend, creating a new 845 entry if none existed. */ 846 inline static struct frvfdpic_relocs_info * 847 frvfdpic_relocs_info_for_local (struct htab *ht, 848 bfd *abfd, 849 long symndx, 850 bfd_vma addend, 851 enum insert_option insert) 852 { 853 struct frvfdpic_relocs_info entry; 854 855 entry.symndx = symndx; 856 entry.d.abfd = abfd; 857 entry.addend = addend; 858 859 return frvfdpic_relocs_info_find (ht, abfd, &entry, insert); 860 } 861 862 /* Merge fields set by check_relocs() of two entries that end up being 863 mapped to the same (presumably global) symbol. */ 864 865 inline static void 866 frvfdpic_pic_merge_early_relocs_info (struct frvfdpic_relocs_info *e2, 867 struct frvfdpic_relocs_info const *e1) 868 { 869 e2->got12 |= e1->got12; 870 e2->gotlos |= e1->gotlos; 871 e2->gothilo |= e1->gothilo; 872 e2->fd |= e1->fd; 873 e2->fdgot12 |= e1->fdgot12; 874 e2->fdgotlos |= e1->fdgotlos; 875 e2->fdgothilo |= e1->fdgothilo; 876 e2->fdgoff12 |= e1->fdgoff12; 877 e2->fdgofflos |= e1->fdgofflos; 878 e2->fdgoffhilo |= e1->fdgoffhilo; 879 e2->gotoff |= e1->gotoff; 880 e2->call |= e1->call; 881 e2->sym |= e1->sym; 882 883 #if 0 884 /* These are set in _frvfdpic_count_got_plt_entries() or later, and this 885 function is only called in _frvfdpic_resolve_final_relocs_info(), that 886 runs just before it, so we don't have to worry about the fields 887 below. */ 888 889 e2->plt |= e1->plt; 890 e2->privfd |= e1->privfd; 891 e2->lazyplt |= e1->lazyplt; 892 e2->done |= e1->done; 893 894 e2->relocs32 += e1->relocs32; 895 e2->relocsfd += e1->relocsfd; 896 e2->relocsfdv += e1->relocsfdv; 897 e2->fixups += e1->fixups; 898 e2->dynrelocs += e1->dynrelocs; 899 900 if (abs (e1->got_entry) < abs (e2->got_entry)) 901 e2->got_entry = e1->got_entry; 902 if (abs (e1->fdgot_entry) < abs (e2->fdgot_entry)) 903 e2->fdgot_entry = e1->fdgot_entry; 904 if (abs (e1->fd_entry) < abs (e2->fd_entry)) 905 e2->fd_entry = e1->fd_entry; 906 907 if (e1->plt_entry < e2->plt_entry) 908 e2->plt_entry = e1->plt_entry; 909 if (e1->lzplt_entry < e2->lzplt_entry) 910 e2->lzplt_entry = e1->lzplt_entry; 911 #endif 912 } 913 914 /* Every block of 65535 lazy PLT entries shares a single call to the 915 resolver, inserted in the 32768th lazy PLT entry (i.e., entry # 916 32767, counting from 0). All other lazy PLT entries branch to it 917 in a single instruction. */ 918 919 #define FRVFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) 8 * 65535 + 4) 920 #define FRVFDPIC_LZPLT_RESOLV_LOC (8 * 32767) 921 922 /* Add a dynamic relocation to the SRELOC section. */ 923 924 inline static bfd_vma 925 _frvfdpic_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset, 926 int reloc_type, long dynindx, bfd_vma addend, 927 struct frvfdpic_relocs_info *entry) 928 { 929 Elf_Internal_Rela outrel; 930 bfd_vma reloc_offset; 931 932 outrel.r_offset = offset; 933 outrel.r_info = ELF32_R_INFO (dynindx, reloc_type); 934 outrel.r_addend = addend; 935 936 reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rel); 937 BFD_ASSERT (reloc_offset < sreloc->_raw_size); 938 bfd_elf32_swap_reloc_out (output_bfd, &outrel, 939 sreloc->contents + reloc_offset); 940 sreloc->reloc_count++; 941 942 BFD_ASSERT (entry->dynrelocs > 0); 943 entry->dynrelocs--; 944 945 return reloc_offset; 946 } 947 948 /* Add a fixup to the ROFIXUP section. */ 949 950 static bfd_vma 951 _frvfdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma offset, 952 struct frvfdpic_relocs_info *entry) 953 { 954 bfd_vma fixup_offset; 955 956 if (rofixup->flags & SEC_EXCLUDE) 957 return -1; 958 959 fixup_offset = rofixup->reloc_count * 4; 960 if (rofixup->contents) 961 { 962 BFD_ASSERT (fixup_offset < rofixup->_raw_size); 963 bfd_put_32 (output_bfd, offset, rofixup->contents + fixup_offset); 964 } 965 rofixup->reloc_count++; 966 967 if (entry) 968 { 969 BFD_ASSERT (entry->fixups > 0); 970 entry->fixups--; 971 } 972 973 return fixup_offset; 974 } 975 976 /* Find the segment number in which OSEC, and output section, is 977 located. */ 978 979 static unsigned 980 _frvfdpic_osec_to_segment (bfd *output_bfd, asection *osec) 981 { 982 struct elf_segment_map *m; 983 Elf_Internal_Phdr *p; 984 985 /* Find the segment that contains the output_section. */ 986 for (m = elf_tdata (output_bfd)->segment_map, 987 p = elf_tdata (output_bfd)->phdr; 988 m != NULL; 989 m = m->next, p++) 990 { 991 int i; 992 993 for (i = m->count - 1; i >= 0; i--) 994 if (m->sections[i] == osec) 995 break; 996 997 if (i >= 0) 998 break; 999 } 1000 1001 return p - elf_tdata (output_bfd)->phdr; 1002 } 1003 1004 inline static bfd_boolean 1005 _frvfdpic_osec_readonly_p (bfd *output_bfd, asection *osec) 1006 { 1007 unsigned seg = _frvfdpic_osec_to_segment (output_bfd, osec); 1008 1009 return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W); 1010 } 1011 1012 /* Generate relocations for GOT entries, function descriptors, and 1013 code for PLT and lazy PLT entries. */ 1014 1015 inline static bfd_boolean 1016 _frvfdpic_emit_got_relocs_plt_entries (struct frvfdpic_relocs_info *entry, 1017 bfd *output_bfd, 1018 struct bfd_link_info *info, 1019 asection *sec, 1020 Elf_Internal_Sym *sym, 1021 bfd_vma addend) 1022 1023 { 1024 bfd_vma fd_lazy_rel_offset = (bfd_vma)-1; 1025 int dynindx = -1; 1026 1027 if (entry->done) 1028 return TRUE; 1029 entry->done = 1; 1030 1031 if (entry->got_entry || entry->fdgot_entry || entry->fd_entry) 1032 { 1033 /* If the symbol is dynamic, consider it for dynamic 1034 relocations, otherwise decay to section + offset. */ 1035 if (entry->symndx == -1 && entry->d.h->dynindx != -1) 1036 dynindx = entry->d.h->dynindx; 1037 else 1038 { 1039 if (sec->output_section 1040 && ! bfd_is_abs_section (sec->output_section) 1041 && ! bfd_is_und_section (sec->output_section)) 1042 dynindx = elf_section_data (sec->output_section)->dynindx; 1043 else 1044 dynindx = 0; 1045 } 1046 } 1047 1048 /* Generate relocation for GOT entry pointing to the symbol. */ 1049 if (entry->got_entry) 1050 { 1051 int idx = dynindx; 1052 bfd_vma ad = addend; 1053 1054 /* If the symbol is dynamic but binds locally, use 1055 section+offset. */ 1056 if (sec && (entry->symndx != -1 1057 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1058 { 1059 if (entry->symndx == -1) 1060 ad += entry->d.h->root.u.def.value; 1061 else 1062 ad += sym->st_value; 1063 ad += sec->output_offset; 1064 if (sec->output_section && elf_section_data (sec->output_section)) 1065 idx = elf_section_data (sec->output_section)->dynindx; 1066 else 1067 idx = 0; 1068 } 1069 1070 /* If we're linking an executable at a fixed address, we can 1071 omit the dynamic relocation as long as the symbol is local to 1072 this module. */ 1073 if (info->executable && !info->pie 1074 && (entry->symndx != -1 1075 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1076 { 1077 if (sec) 1078 ad += sec->output_section->vma; 1079 if (entry->symndx != -1 1080 || entry->d.h->root.type != bfd_link_hash_undefweak) 1081 _frvfdpic_add_rofixup (output_bfd, 1082 frvfdpic_gotfixup_section (info), 1083 frvfdpic_got_section (info)->output_section 1084 ->vma 1085 + frvfdpic_got_section (info)->output_offset 1086 + frvfdpic_got_initial_offset (info) 1087 + entry->got_entry, entry); 1088 } 1089 else 1090 _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), 1091 _bfd_elf_section_offset 1092 (output_bfd, info, 1093 frvfdpic_got_section (info), 1094 frvfdpic_got_initial_offset (info) 1095 + entry->got_entry) 1096 + frvfdpic_got_section (info) 1097 ->output_section->vma 1098 + frvfdpic_got_section (info)->output_offset, 1099 R_FRV_32, idx, ad, entry); 1100 1101 bfd_put_32 (output_bfd, ad, 1102 frvfdpic_got_section (info)->contents 1103 + frvfdpic_got_initial_offset (info) 1104 + entry->got_entry); 1105 } 1106 1107 /* Generate relocation for GOT entry pointing to a canonical 1108 function descriptor. */ 1109 if (entry->fdgot_entry) 1110 { 1111 int reloc, idx; 1112 bfd_vma ad = 0; 1113 1114 if (! (entry->symndx == -1 1115 && entry->d.h->root.type == bfd_link_hash_undefweak 1116 && FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1117 { 1118 /* If the symbol is dynamic and there may be dynamic symbol 1119 resolution because we are, or are linked with, a shared 1120 library, emit a FUNCDESC relocation such that the dynamic 1121 linker will allocate the function descriptor. If the 1122 symbol needs a non-local function descriptor but binds 1123 locally (e.g., its visibility is protected, emit a 1124 dynamic relocation decayed to section+offset. */ 1125 if (entry->symndx == -1 1126 && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h) 1127 && FRVFDPIC_SYM_LOCAL (info, entry->d.h) 1128 && !(info->executable && !info->pie)) 1129 { 1130 reloc = R_FRV_FUNCDESC; 1131 idx = elf_section_data (entry->d.h->root.u.def.section 1132 ->output_section)->dynindx; 1133 ad = entry->d.h->root.u.def.section->output_offset 1134 + entry->d.h->root.u.def.value; 1135 } 1136 else if (entry->symndx == -1 1137 && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h)) 1138 { 1139 reloc = R_FRV_FUNCDESC; 1140 idx = dynindx; 1141 ad = addend; 1142 if (ad) 1143 return FALSE; 1144 } 1145 else 1146 { 1147 /* Otherwise, we know we have a private function descriptor, 1148 so reference it directly. */ 1149 if (elf_hash_table (info)->dynamic_sections_created) 1150 BFD_ASSERT (entry->privfd); 1151 reloc = R_FRV_32; 1152 idx = elf_section_data (frvfdpic_got_section (info) 1153 ->output_section)->dynindx; 1154 ad = frvfdpic_got_section (info)->output_offset 1155 + frvfdpic_got_initial_offset (info) + entry->fd_entry; 1156 } 1157 1158 /* If there is room for dynamic symbol resolution, emit the 1159 dynamic relocation. However, if we're linking an 1160 executable at a fixed location, we won't have emitted a 1161 dynamic symbol entry for the got section, so idx will be 1162 zero, which means we can and should compute the address 1163 of the private descriptor ourselves. */ 1164 if (info->executable && !info->pie 1165 && (entry->symndx != -1 1166 || FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h))) 1167 { 1168 ad += frvfdpic_got_section (info)->output_section->vma; 1169 _frvfdpic_add_rofixup (output_bfd, 1170 frvfdpic_gotfixup_section (info), 1171 frvfdpic_got_section (info) 1172 ->output_section->vma 1173 + frvfdpic_got_section (info) 1174 ->output_offset 1175 + frvfdpic_got_initial_offset (info) 1176 + entry->fdgot_entry, entry); 1177 } 1178 else 1179 _frvfdpic_add_dyn_reloc (output_bfd, 1180 frvfdpic_gotrel_section (info), 1181 _bfd_elf_section_offset 1182 (output_bfd, info, 1183 frvfdpic_got_section (info), 1184 frvfdpic_got_initial_offset (info) 1185 + entry->fdgot_entry) 1186 + frvfdpic_got_section (info) 1187 ->output_section->vma 1188 + frvfdpic_got_section (info) 1189 ->output_offset, 1190 reloc, idx, ad, entry); 1191 } 1192 1193 bfd_put_32 (output_bfd, ad, 1194 frvfdpic_got_section (info)->contents 1195 + frvfdpic_got_initial_offset (info) 1196 + entry->fdgot_entry); 1197 } 1198 1199 /* Generate relocation to fill in a private function descriptor in 1200 the GOT. */ 1201 if (entry->fd_entry) 1202 { 1203 int idx = dynindx; 1204 bfd_vma ad = addend; 1205 bfd_vma ofst; 1206 long lowword, highword; 1207 1208 /* If the symbol is dynamic but binds locally, use 1209 section+offset. */ 1210 if (sec && (entry->symndx != -1 1211 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1212 { 1213 if (entry->symndx == -1) 1214 ad += entry->d.h->root.u.def.value; 1215 else 1216 ad += sym->st_value; 1217 ad += sec->output_offset; 1218 if (sec->output_section && elf_section_data (sec->output_section)) 1219 idx = elf_section_data (sec->output_section)->dynindx; 1220 else 1221 idx = 0; 1222 } 1223 1224 /* If we're linking an executable at a fixed address, we can 1225 omit the dynamic relocation as long as the symbol is local to 1226 this module. */ 1227 if (info->executable && !info->pie 1228 && (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) 1229 { 1230 if (sec) 1231 ad += sec->output_section->vma; 1232 ofst = 0; 1233 if (entry->symndx != -1 1234 || entry->d.h->root.type != bfd_link_hash_undefweak) 1235 { 1236 _frvfdpic_add_rofixup (output_bfd, 1237 frvfdpic_gotfixup_section (info), 1238 frvfdpic_got_section (info) 1239 ->output_section->vma 1240 + frvfdpic_got_section (info) 1241 ->output_offset 1242 + frvfdpic_got_initial_offset (info) 1243 + entry->fd_entry, entry); 1244 _frvfdpic_add_rofixup (output_bfd, 1245 frvfdpic_gotfixup_section (info), 1246 frvfdpic_got_section (info) 1247 ->output_section->vma 1248 + frvfdpic_got_section (info) 1249 ->output_offset 1250 + frvfdpic_got_initial_offset (info) 1251 + entry->fd_entry + 4, entry); 1252 } 1253 } 1254 else 1255 { 1256 ofst = 1257 _frvfdpic_add_dyn_reloc (output_bfd, 1258 entry->lazyplt 1259 ? frvfdpic_pltrel_section (info) 1260 : frvfdpic_gotrel_section (info), 1261 _bfd_elf_section_offset 1262 (output_bfd, info, 1263 frvfdpic_got_section (info), 1264 frvfdpic_got_initial_offset (info) 1265 + entry->fd_entry) 1266 + frvfdpic_got_section (info) 1267 ->output_section->vma 1268 + frvfdpic_got_section (info) 1269 ->output_offset, 1270 R_FRV_FUNCDESC_VALUE, idx, ad, entry); 1271 } 1272 1273 /* If we've omitted the dynamic relocation, just emit the fixed 1274 addresses of the symbol and of the local GOT base offset. */ 1275 if (info->executable && !info->pie && sec && sec->output_section) 1276 { 1277 lowword = ad; 1278 highword = frvfdpic_got_section (info)->output_section->vma 1279 + frvfdpic_got_section (info)->output_offset 1280 + frvfdpic_got_initial_offset (info); 1281 } 1282 else if (entry->lazyplt) 1283 { 1284 if (ad) 1285 return FALSE; 1286 1287 fd_lazy_rel_offset = ofst; 1288 1289 /* A function descriptor used for lazy or local resolving is 1290 initialized such that its high word contains the output 1291 section index in which the PLT entries are located, and 1292 the low word contains the address of the lazy PLT entry 1293 entry point, that must be within the memory region 1294 assigned to that section. */ 1295 lowword = entry->lzplt_entry + 4 1296 + frvfdpic_plt_section (info)->output_offset 1297 + frvfdpic_plt_section (info)->output_section->vma; 1298 highword = _frvfdpic_osec_to_segment 1299 (output_bfd, frvfdpic_plt_section (info)->output_section); 1300 } 1301 else 1302 { 1303 /* A function descriptor for a local function gets the index 1304 of the section. For a non-local function, it's 1305 disregarded. */ 1306 lowword = ad; 1307 if (entry->symndx == -1 && entry->d.h->dynindx != -1 1308 && entry->d.h->dynindx == idx) 1309 highword = 0; 1310 else 1311 highword = _frvfdpic_osec_to_segment 1312 (output_bfd, sec->output_section); 1313 } 1314 1315 bfd_put_32 (output_bfd, lowword, 1316 frvfdpic_got_section (info)->contents 1317 + frvfdpic_got_initial_offset (info) 1318 + entry->fd_entry); 1319 bfd_put_32 (output_bfd, highword, 1320 frvfdpic_got_section (info)->contents 1321 + frvfdpic_got_initial_offset (info) 1322 + entry->fd_entry + 4); 1323 } 1324 1325 /* Generate code for the PLT entry. */ 1326 if (entry->plt_entry != (bfd_vma) -1) 1327 { 1328 bfd_byte *plt_code = frvfdpic_plt_section (info)->contents 1329 + entry->plt_entry; 1330 1331 BFD_ASSERT (entry->fd_entry); 1332 1333 /* Figure out what kind of PLT entry we need, depending on the 1334 location of the function descriptor within the GOT. */ 1335 if (entry->fd_entry >= -(1 << (12 - 1)) 1336 && entry->fd_entry < (1 << (12 - 1))) 1337 { 1338 /* lddi @(gr15, fd_entry), gr14 */ 1339 bfd_put_32 (output_bfd, 1340 0x9cccf000 | (entry->fd_entry & ((1 << 12) - 1)), 1341 plt_code); 1342 plt_code += 4; 1343 } 1344 else 1345 { 1346 if (entry->fd_entry >= -(1 << (16 - 1)) 1347 && entry->fd_entry < (1 << (16 - 1))) 1348 { 1349 /* setlos lo(fd_entry), gr14 */ 1350 bfd_put_32 (output_bfd, 1351 0x9cfc0000 1352 | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)), 1353 plt_code); 1354 plt_code += 4; 1355 } 1356 else 1357 { 1358 /* sethi.p hi(fd_entry), gr14 1359 setlo lo(fd_entry), gr14 */ 1360 bfd_put_32 (output_bfd, 1361 0x1cf80000 1362 | ((entry->fd_entry >> 16) 1363 & (((bfd_vma)1 << 16) - 1)), 1364 plt_code); 1365 bfd_put_32 (output_bfd, 1366 0x9cf40000 1367 | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)), 1368 plt_code); 1369 plt_code += 8; 1370 } 1371 /* ldd @(gr14,gr15),gr14 */ 1372 bfd_put_32 (output_bfd, 0x9c08e14f, plt_code); 1373 plt_code += 4; 1374 } 1375 /* jmpl @(gr14,gr0) */ 1376 bfd_put_32 (output_bfd, 0x8030e000, plt_code); 1377 } 1378 1379 /* Generate code for the lazy PLT entry. */ 1380 if (entry->lzplt_entry != (bfd_vma) -1) 1381 { 1382 bfd_byte *lzplt_code = frvfdpic_plt_section (info)->contents 1383 + entry->lzplt_entry; 1384 bfd_vma resolverStub_addr; 1385 1386 bfd_put_32 (output_bfd, fd_lazy_rel_offset, lzplt_code); 1387 lzplt_code += 4; 1388 1389 resolverStub_addr = entry->lzplt_entry / FRVFDPIC_LZPLT_BLOCK_SIZE 1390 * FRVFDPIC_LZPLT_BLOCK_SIZE + FRVFDPIC_LZPLT_RESOLV_LOC; 1391 if (resolverStub_addr >= frvfdpic_plt_initial_offset (info)) 1392 resolverStub_addr = frvfdpic_plt_initial_offset (info) - 12; 1393 1394 if (entry->lzplt_entry == resolverStub_addr) 1395 { 1396 /* This is a lazy PLT entry that includes a resolver call. */ 1397 /* ldd @(gr15,gr0), gr4 1398 jmpl @(gr4,gr0) */ 1399 bfd_put_32 (output_bfd, 0x8808f140, lzplt_code); 1400 bfd_put_32 (output_bfd, 0x80304000, lzplt_code + 4); 1401 } 1402 else 1403 { 1404 /* bra resolverStub */ 1405 bfd_put_32 (output_bfd, 1406 0xc01a0000 1407 | (((resolverStub_addr - entry->lzplt_entry) 1408 / 4) & (((bfd_vma)1 << 16) - 1)), 1409 lzplt_code); 1410 } 1411 } 1412 1413 return TRUE; 1414 } 1415 1416 /* Handle an FRV small data reloc. */ 1417 1418 static bfd_reloc_status_type 1419 elf32_frv_relocate_gprel12 (info, input_bfd, input_section, relocation, 1420 contents, value) 1421 struct bfd_link_info *info; 1422 bfd *input_bfd; 1423 asection *input_section; 1424 Elf_Internal_Rela *relocation; 1425 bfd_byte *contents; 1426 bfd_vma value; 1427 { 1428 bfd_vma insn; 1429 bfd_vma gp; 1430 struct bfd_link_hash_entry *h; 1431 1432 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 1433 1434 gp = (h->u.def.value 1435 + h->u.def.section->output_section->vma 1436 + h->u.def.section->output_offset); 1437 1438 value -= input_section->output_section->vma; 1439 value -= (gp - input_section->output_section->vma); 1440 1441 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 1442 1443 value += relocation->r_addend; 1444 1445 if ((long) value > 0x7ff || (long) value < -0x800) 1446 return bfd_reloc_overflow; 1447 1448 bfd_put_32 (input_bfd, 1449 (insn & 0xfffff000) | (value & 0xfff), 1450 contents + relocation->r_offset); 1451 1452 return bfd_reloc_ok; 1453 } 1454 1455 /* Handle an FRV small data reloc. for the u12 field. */ 1456 1457 static bfd_reloc_status_type 1458 elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, relocation, 1459 contents, value) 1460 struct bfd_link_info *info; 1461 bfd *input_bfd; 1462 asection *input_section; 1463 Elf_Internal_Rela *relocation; 1464 bfd_byte *contents; 1465 bfd_vma value; 1466 { 1467 bfd_vma insn; 1468 bfd_vma gp; 1469 struct bfd_link_hash_entry *h; 1470 bfd_vma mask; 1471 1472 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 1473 1474 gp = (h->u.def.value 1475 + h->u.def.section->output_section->vma 1476 + h->u.def.section->output_offset); 1477 1478 value -= input_section->output_section->vma; 1479 value -= (gp - input_section->output_section->vma); 1480 1481 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 1482 1483 value += relocation->r_addend; 1484 1485 if ((long) value > 0x7ff || (long) value < -0x800) 1486 return bfd_reloc_overflow; 1487 1488 /* The high 6 bits go into bits 17-12. The low 6 bits go into bits 5-0. */ 1489 mask = 0x3f03f; 1490 insn = (insn & ~mask) | ((value & 0xfc0) << 12) | (value & 0x3f); 1491 1492 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); 1493 1494 return bfd_reloc_ok; 1495 } 1496 1497 /* Handle an FRV ELF HI16 reloc. */ 1498 1499 static bfd_reloc_status_type 1500 elf32_frv_relocate_hi16 (input_bfd, relhi, contents, value) 1501 bfd *input_bfd; 1502 Elf_Internal_Rela *relhi; 1503 bfd_byte *contents; 1504 bfd_vma value; 1505 { 1506 bfd_vma insn; 1507 1508 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); 1509 1510 value += relhi->r_addend; 1511 value = ((value >> 16) & 0xffff); 1512 1513 insn = (insn & 0xffff0000) | value; 1514 1515 if ((long) value > 0xffff || (long) value < -0x10000) 1516 return bfd_reloc_overflow; 1517 1518 bfd_put_32 (input_bfd, insn, contents + relhi->r_offset); 1519 return bfd_reloc_ok; 1520 1521 } 1522 static bfd_reloc_status_type 1523 elf32_frv_relocate_lo16 (input_bfd, rello, contents, value) 1524 bfd *input_bfd; 1525 Elf_Internal_Rela *rello; 1526 bfd_byte *contents; 1527 bfd_vma value; 1528 { 1529 bfd_vma insn; 1530 1531 insn = bfd_get_32 (input_bfd, contents + rello->r_offset); 1532 1533 value += rello->r_addend; 1534 value = value & 0xffff; 1535 1536 insn = (insn & 0xffff0000) | value; 1537 1538 if ((long) value > 0xffff || (long) value < -0x10000) 1539 return bfd_reloc_overflow; 1540 1541 bfd_put_32 (input_bfd, insn, contents + rello->r_offset); 1542 return bfd_reloc_ok; 1543 } 1544 1545 /* Perform the relocation for the CALL label24 instruction. */ 1546 1547 static bfd_reloc_status_type 1548 elf32_frv_relocate_label24 (input_bfd, input_section, rello, contents, value) 1549 bfd *input_bfd; 1550 asection *input_section; 1551 Elf_Internal_Rela *rello; 1552 bfd_byte *contents; 1553 bfd_vma value; 1554 { 1555 bfd_vma insn; 1556 bfd_vma label6; 1557 bfd_vma label18; 1558 1559 /* The format for the call instruction is: 1560 1561 0 000000 0001111 000000000000000000 1562 label6 opcode label18 1563 1564 The branch calculation is: pc + (4*label24) 1565 where label24 is the concatenation of label6 and label18. */ 1566 1567 /* Grab the instruction. */ 1568 insn = bfd_get_32 (input_bfd, contents + rello->r_offset); 1569 1570 value -= input_section->output_section->vma + input_section->output_offset; 1571 value -= rello->r_offset; 1572 value += rello->r_addend; 1573 1574 value = value >> 2; 1575 1576 label6 = value & 0xfc0000; 1577 label6 = label6 << 7; 1578 1579 label18 = value & 0x3ffff; 1580 1581 insn = insn & 0x803c0000; 1582 insn = insn | label6; 1583 insn = insn | label18; 1584 1585 bfd_put_32 (input_bfd, insn, contents + rello->r_offset); 1586 1587 return bfd_reloc_ok; 1588 } 1589 1590 static bfd_reloc_status_type 1591 elf32_frv_relocate_gprelhi (info, input_bfd, input_section, relocation, 1592 contents, value) 1593 struct bfd_link_info *info; 1594 bfd *input_bfd; 1595 asection *input_section; 1596 Elf_Internal_Rela *relocation; 1597 bfd_byte *contents; 1598 bfd_vma value; 1599 { 1600 bfd_vma insn; 1601 bfd_vma gp; 1602 struct bfd_link_hash_entry *h; 1603 1604 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 1605 1606 gp = (h->u.def.value 1607 + h->u.def.section->output_section->vma 1608 + h->u.def.section->output_offset); 1609 1610 value -= input_section->output_section->vma; 1611 value -= (gp - input_section->output_section->vma); 1612 value += relocation->r_addend; 1613 value = ((value >> 16) & 0xffff); 1614 1615 if ((long) value > 0xffff || (long) value < -0x10000) 1616 return bfd_reloc_overflow; 1617 1618 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 1619 insn = (insn & 0xffff0000) | value; 1620 1621 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); 1622 return bfd_reloc_ok; 1623 } 1624 1625 static bfd_reloc_status_type 1626 elf32_frv_relocate_gprello (info, input_bfd, input_section, relocation, 1627 contents, value) 1628 struct bfd_link_info *info; 1629 bfd *input_bfd; 1630 asection *input_section; 1631 Elf_Internal_Rela *relocation; 1632 bfd_byte *contents; 1633 bfd_vma value; 1634 { 1635 bfd_vma insn; 1636 bfd_vma gp; 1637 struct bfd_link_hash_entry *h; 1638 1639 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); 1640 1641 gp = (h->u.def.value 1642 + h->u.def.section->output_section->vma 1643 + h->u.def.section->output_offset); 1644 1645 value -= input_section->output_section->vma; 1646 value -= (gp - input_section->output_section->vma); 1647 value += relocation->r_addend; 1648 value = value & 0xffff; 1649 1650 if ((long) value > 0xffff || (long) value < -0x10000) 1651 return bfd_reloc_overflow; 1652 1653 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); 1654 insn = (insn & 0xffff0000) | value; 1655 1656 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); 1657 1658 return bfd_reloc_ok; 1659 } 1660 1661 static reloc_howto_type * 1662 frv_reloc_type_lookup (abfd, code) 1663 bfd *abfd ATTRIBUTE_UNUSED; 1664 bfd_reloc_code_real_type code; 1665 { 1666 switch (code) 1667 { 1668 default: 1669 break; 1670 1671 case BFD_RELOC_NONE: 1672 return &elf32_frv_howto_table[ (int) R_FRV_NONE]; 1673 1674 case BFD_RELOC_32: 1675 if (elf_elfheader (abfd)->e_type == ET_EXEC 1676 || elf_elfheader (abfd)->e_type == ET_DYN) 1677 return &elf32_frv_rel_32_howto; 1678 /* Fall through. */ 1679 case BFD_RELOC_CTOR: 1680 return &elf32_frv_howto_table[ (int) R_FRV_32]; 1681 1682 case BFD_RELOC_FRV_LABEL16: 1683 return &elf32_frv_howto_table[ (int) R_FRV_LABEL16]; 1684 1685 case BFD_RELOC_FRV_LABEL24: 1686 return &elf32_frv_howto_table[ (int) R_FRV_LABEL24]; 1687 1688 case BFD_RELOC_FRV_LO16: 1689 return &elf32_frv_howto_table[ (int) R_FRV_LO16]; 1690 1691 case BFD_RELOC_FRV_HI16: 1692 return &elf32_frv_howto_table[ (int) R_FRV_HI16]; 1693 1694 case BFD_RELOC_FRV_GPREL12: 1695 return &elf32_frv_howto_table[ (int) R_FRV_GPREL12]; 1696 1697 case BFD_RELOC_FRV_GPRELU12: 1698 return &elf32_frv_howto_table[ (int) R_FRV_GPRELU12]; 1699 1700 case BFD_RELOC_FRV_GPREL32: 1701 return &elf32_frv_howto_table[ (int) R_FRV_GPREL32]; 1702 1703 case BFD_RELOC_FRV_GPRELHI: 1704 return &elf32_frv_howto_table[ (int) R_FRV_GPRELHI]; 1705 1706 case BFD_RELOC_FRV_GPRELLO: 1707 return &elf32_frv_howto_table[ (int) R_FRV_GPRELLO]; 1708 1709 case BFD_RELOC_FRV_GOT12: 1710 return &elf32_frv_howto_table[ (int) R_FRV_GOT12]; 1711 1712 case BFD_RELOC_FRV_GOTHI: 1713 return &elf32_frv_howto_table[ (int) R_FRV_GOTHI]; 1714 1715 case BFD_RELOC_FRV_GOTLO: 1716 return &elf32_frv_howto_table[ (int) R_FRV_GOTLO]; 1717 1718 case BFD_RELOC_FRV_FUNCDESC: 1719 if (elf_elfheader (abfd)->e_type == ET_EXEC 1720 || elf_elfheader (abfd)->e_type == ET_DYN) 1721 return &elf32_frv_rel_funcdesc_howto; 1722 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC]; 1723 1724 case BFD_RELOC_FRV_FUNCDESC_GOT12: 1725 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOT12]; 1726 1727 case BFD_RELOC_FRV_FUNCDESC_GOTHI: 1728 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTHI]; 1729 1730 case BFD_RELOC_FRV_FUNCDESC_GOTLO: 1731 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTLO]; 1732 1733 case BFD_RELOC_FRV_FUNCDESC_VALUE: 1734 if (elf_elfheader (abfd)->e_type == ET_EXEC 1735 || elf_elfheader (abfd)->e_type == ET_DYN) 1736 return &elf32_frv_rel_funcdesc_value_howto; 1737 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_VALUE]; 1738 1739 case BFD_RELOC_FRV_FUNCDESC_GOTOFF12: 1740 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFF12]; 1741 1742 case BFD_RELOC_FRV_FUNCDESC_GOTOFFHI: 1743 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFHI]; 1744 1745 case BFD_RELOC_FRV_FUNCDESC_GOTOFFLO: 1746 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFLO]; 1747 1748 case BFD_RELOC_FRV_GOTOFF12: 1749 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFF12]; 1750 1751 case BFD_RELOC_FRV_GOTOFFHI: 1752 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFHI]; 1753 1754 case BFD_RELOC_FRV_GOTOFFLO: 1755 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFLO]; 1756 1757 case BFD_RELOC_VTABLE_INHERIT: 1758 return &elf32_frv_vtinherit_howto; 1759 1760 case BFD_RELOC_VTABLE_ENTRY: 1761 return &elf32_frv_vtentry_howto; 1762 } 1763 1764 return NULL; 1765 } 1766 1767 /* Set the howto pointer for an FRV ELF reloc. */ 1768 1769 static void 1770 frv_info_to_howto_rela (abfd, cache_ptr, dst) 1771 bfd *abfd ATTRIBUTE_UNUSED; 1772 arelent *cache_ptr; 1773 Elf_Internal_Rela *dst; 1774 { 1775 unsigned int r_type; 1776 1777 r_type = ELF32_R_TYPE (dst->r_info); 1778 switch (r_type) 1779 { 1780 case R_FRV_GNU_VTINHERIT: 1781 cache_ptr->howto = &elf32_frv_vtinherit_howto; 1782 break; 1783 1784 case R_FRV_GNU_VTENTRY: 1785 cache_ptr->howto = &elf32_frv_vtentry_howto; 1786 break; 1787 1788 default: 1789 cache_ptr->howto = & elf32_frv_howto_table [r_type]; 1790 break; 1791 } 1792 } 1793 1794 /* Set the howto pointer for an FRV ELF REL reloc. */ 1795 static void 1796 frvfdpic_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, 1797 arelent *cache_ptr, Elf_Internal_Rela *dst) 1798 { 1799 unsigned int r_type; 1800 1801 r_type = ELF32_R_TYPE (dst->r_info); 1802 switch (r_type) 1803 { 1804 case R_FRV_32: 1805 cache_ptr->howto = &elf32_frv_rel_32_howto; 1806 break; 1807 1808 case R_FRV_FUNCDESC: 1809 cache_ptr->howto = &elf32_frv_rel_funcdesc_howto; 1810 break; 1811 1812 case R_FRV_FUNCDESC_VALUE: 1813 cache_ptr->howto = &elf32_frv_rel_funcdesc_value_howto; 1814 break; 1815 1816 default: 1817 cache_ptr->howto = NULL; 1818 break; 1819 } 1820 } 1821 1822 /* Perform a single relocation. By default we use the standard BFD 1823 routines, but a few relocs, we have to do them ourselves. */ 1824 1825 static bfd_reloc_status_type 1826 frv_final_link_relocate (howto, input_bfd, input_section, contents, rel, 1827 relocation) 1828 reloc_howto_type *howto; 1829 bfd *input_bfd; 1830 asection *input_section; 1831 bfd_byte *contents; 1832 Elf_Internal_Rela *rel; 1833 bfd_vma relocation; 1834 { 1835 return _bfd_final_link_relocate (howto, input_bfd, input_section, 1836 contents, rel->r_offset, relocation, 1837 rel->r_addend); 1838 } 1839 1840 1841 /* Relocate an FRV ELF section. 1842 1843 The RELOCATE_SECTION function is called by the new ELF backend linker 1844 to handle the relocations for a section. 1845 1846 The relocs are always passed as Rela structures; if the section 1847 actually uses Rel structures, the r_addend field will always be 1848 zero. 1849 1850 This function is responsible for adjusting the section contents as 1851 necessary, and (if using Rela relocs and generating a relocatable 1852 output file) adjusting the reloc addend as necessary. 1853 1854 This function does not have to worry about setting the reloc 1855 address or the reloc symbol index. 1856 1857 LOCAL_SYMS is a pointer to the swapped in local symbols. 1858 1859 LOCAL_SECTIONS is an array giving the section in the input file 1860 corresponding to the st_shndx field of each local symbol. 1861 1862 The global hash table entry for the global symbols can be found 1863 via elf_sym_hashes (input_bfd). 1864 1865 When generating relocatable output, this function must handle 1866 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 1867 going to be the section symbol corresponding to the output 1868 section, which means that the addend must be adjusted 1869 accordingly. */ 1870 1871 static bfd_boolean 1872 elf32_frv_relocate_section (output_bfd, info, input_bfd, input_section, 1873 contents, relocs, local_syms, local_sections) 1874 bfd *output_bfd ATTRIBUTE_UNUSED; 1875 struct bfd_link_info *info; 1876 bfd *input_bfd; 1877 asection *input_section; 1878 bfd_byte *contents; 1879 Elf_Internal_Rela *relocs; 1880 Elf_Internal_Sym *local_syms; 1881 asection **local_sections; 1882 { 1883 Elf_Internal_Shdr *symtab_hdr; 1884 struct elf_link_hash_entry **sym_hashes; 1885 Elf_Internal_Rela *rel; 1886 Elf_Internal_Rela *relend; 1887 unsigned isec_segment, got_segment, plt_segment, gprel_segment, 1888 check_segment[2]; 1889 int silence_segment_error = !(info->shared || info->pie); 1890 1891 if (info->relocatable) 1892 return TRUE; 1893 1894 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; 1895 sym_hashes = elf_sym_hashes (input_bfd); 1896 relend = relocs + input_section->reloc_count; 1897 1898 isec_segment = _frvfdpic_osec_to_segment (output_bfd, 1899 input_section->output_section); 1900 if (IS_FDPIC (output_bfd) && frvfdpic_got_section (info)) 1901 got_segment = _frvfdpic_osec_to_segment (output_bfd, 1902 frvfdpic_got_section (info) 1903 ->output_section); 1904 else 1905 got_segment = -1; 1906 if (IS_FDPIC (output_bfd) && frvfdpic_gotfixup_section (info)) 1907 gprel_segment = _frvfdpic_osec_to_segment (output_bfd, 1908 frvfdpic_gotfixup_section (info) 1909 ->output_section); 1910 else 1911 gprel_segment = -1; 1912 if (IS_FDPIC (output_bfd) && elf_hash_table (info)->dynamic_sections_created) 1913 plt_segment = _frvfdpic_osec_to_segment (output_bfd, 1914 frvfdpic_plt_section (info) 1915 ->output_section); 1916 else 1917 plt_segment = -1; 1918 1919 for (rel = relocs; rel < relend; rel ++) 1920 { 1921 reloc_howto_type *howto; 1922 unsigned long r_symndx; 1923 Elf_Internal_Sym *sym; 1924 asection *sec; 1925 struct elf_link_hash_entry *h; 1926 bfd_vma relocation; 1927 bfd_reloc_status_type r; 1928 const char * name = NULL; 1929 int r_type; 1930 asection *osec; 1931 struct frvfdpic_relocs_info *picrel; 1932 bfd_vma orig_addend = rel->r_addend; 1933 1934 r_type = ELF32_R_TYPE (rel->r_info); 1935 1936 if ( r_type == R_FRV_GNU_VTINHERIT 1937 || r_type == R_FRV_GNU_VTENTRY) 1938 continue; 1939 1940 /* This is a final link. */ 1941 r_symndx = ELF32_R_SYM (rel->r_info); 1942 howto = elf32_frv_howto_table + ELF32_R_TYPE (rel->r_info); 1943 h = NULL; 1944 sym = NULL; 1945 sec = NULL; 1946 1947 if (r_symndx < symtab_hdr->sh_info) 1948 { 1949 sym = local_syms + r_symndx; 1950 osec = sec = local_sections [r_symndx]; 1951 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 1952 1953 name = bfd_elf_string_from_elf_section 1954 (input_bfd, symtab_hdr->sh_link, sym->st_name); 1955 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; 1956 } 1957 else 1958 { 1959 h = sym_hashes [r_symndx - symtab_hdr->sh_info]; 1960 1961 while (h->root.type == bfd_link_hash_indirect 1962 || h->root.type == bfd_link_hash_warning) 1963 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1964 1965 name = h->root.root.string; 1966 1967 if ((h->root.type == bfd_link_hash_defined 1968 || h->root.type == bfd_link_hash_defweak) 1969 && ! FRVFDPIC_SYM_LOCAL (info, h)) 1970 { 1971 sec = NULL; 1972 relocation = 0; 1973 } 1974 else 1975 if (h->root.type == bfd_link_hash_defined 1976 || h->root.type == bfd_link_hash_defweak) 1977 { 1978 sec = h->root.u.def.section; 1979 relocation = (h->root.u.def.value 1980 + sec->output_section->vma 1981 + sec->output_offset); 1982 } 1983 else if (h->root.type == bfd_link_hash_undefweak) 1984 { 1985 relocation = 0; 1986 } 1987 else if (info->unresolved_syms_in_objects == RM_IGNORE 1988 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) 1989 relocation = 0; 1990 else 1991 { 1992 if (! ((*info->callbacks->undefined_symbol) 1993 (info, h->root.root.string, input_bfd, 1994 input_section, rel->r_offset, 1995 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR 1996 || ELF_ST_VISIBILITY (h->other))))) 1997 return FALSE; 1998 relocation = 0; 1999 } 2000 osec = sec; 2001 } 2002 2003 switch (r_type) 2004 { 2005 case R_FRV_LABEL24: 2006 case R_FRV_32: 2007 if (! IS_FDPIC (output_bfd)) 2008 goto non_fdpic; 2009 2010 case R_FRV_GOT12: 2011 case R_FRV_GOTHI: 2012 case R_FRV_GOTLO: 2013 case R_FRV_FUNCDESC_GOT12: 2014 case R_FRV_FUNCDESC_GOTHI: 2015 case R_FRV_FUNCDESC_GOTLO: 2016 case R_FRV_GOTOFF12: 2017 case R_FRV_GOTOFFHI: 2018 case R_FRV_GOTOFFLO: 2019 case R_FRV_FUNCDESC_GOTOFF12: 2020 case R_FRV_FUNCDESC_GOTOFFHI: 2021 case R_FRV_FUNCDESC_GOTOFFLO: 2022 case R_FRV_FUNCDESC: 2023 case R_FRV_FUNCDESC_VALUE: 2024 if (h != NULL) 2025 picrel = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info 2026 (info), input_bfd, h, 2027 orig_addend, INSERT); 2028 else 2029 /* In order to find the entry we created before, we must 2030 use the original addend, not the one that may have been 2031 modified by _bfd_elf_rela_local_sym(). */ 2032 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info 2033 (info), input_bfd, r_symndx, 2034 orig_addend, INSERT); 2035 if (! picrel) 2036 return FALSE; 2037 2038 if (!_frvfdpic_emit_got_relocs_plt_entries (picrel, output_bfd, info, 2039 osec, sym, 2040 rel->r_addend)) 2041 { 2042 (*_bfd_error_handler) 2043 (_("%s: relocation at `%s+0x%x' references symbol `%s' with nonzero addend"), 2044 bfd_archive_filename (input_bfd), input_section->name, 2045 rel->r_offset, name); 2046 return FALSE; 2047 2048 } 2049 2050 break; 2051 2052 default: 2053 non_fdpic: 2054 picrel = NULL; 2055 if (h && ! FRVFDPIC_SYM_LOCAL (info, h)) 2056 { 2057 info->callbacks->warning 2058 (info, _("relocation references symbol not defined in the module"), 2059 name, input_bfd, input_section, rel->r_offset); 2060 return FALSE; 2061 } 2062 break; 2063 } 2064 2065 switch (r_type) 2066 { 2067 case R_FRV_LABEL24: 2068 check_segment[0] = isec_segment; 2069 if (! IS_FDPIC (output_bfd)) 2070 check_segment[1] = isec_segment; 2071 else if (picrel->plt) 2072 { 2073 relocation = frvfdpic_plt_section (info)->output_section->vma 2074 + frvfdpic_plt_section (info)->output_offset 2075 + picrel->plt_entry; 2076 check_segment[1] = plt_segment; 2077 } 2078 /* We don't want to warn on calls to undefined weak symbols, 2079 as calls to them must be protected by non-NULL tests 2080 anyway, and unprotected calls would invoke undefined 2081 behavior. */ 2082 else if (picrel->symndx == -1 2083 && picrel->d.h->root.type == bfd_link_hash_undefweak) 2084 check_segment[1] = check_segment[0]; 2085 else 2086 check_segment[1] = sec 2087 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 2088 : (unsigned)-1; 2089 break; 2090 2091 case R_FRV_GOT12: 2092 case R_FRV_GOTHI: 2093 case R_FRV_GOTLO: 2094 relocation = picrel->got_entry; 2095 check_segment[0] = check_segment[1] = got_segment; 2096 break; 2097 2098 case R_FRV_FUNCDESC_GOT12: 2099 case R_FRV_FUNCDESC_GOTHI: 2100 case R_FRV_FUNCDESC_GOTLO: 2101 relocation = picrel->fdgot_entry; 2102 check_segment[0] = check_segment[1] = got_segment; 2103 break; 2104 2105 case R_FRV_GOTOFFHI: 2106 case R_FRV_GOTOFF12: 2107 case R_FRV_GOTOFFLO: 2108 relocation -= frvfdpic_got_section (info)->output_section->vma 2109 + frvfdpic_got_section (info)->output_offset 2110 + frvfdpic_got_initial_offset (info); 2111 check_segment[0] = got_segment; 2112 check_segment[1] = sec 2113 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 2114 : (unsigned)-1; 2115 break; 2116 2117 case R_FRV_FUNCDESC_GOTOFF12: 2118 case R_FRV_FUNCDESC_GOTOFFHI: 2119 case R_FRV_FUNCDESC_GOTOFFLO: 2120 relocation = picrel->fd_entry; 2121 check_segment[0] = check_segment[1] = got_segment; 2122 break; 2123 2124 case R_FRV_FUNCDESC: 2125 { 2126 int dynindx; 2127 bfd_vma addend = rel->r_addend; 2128 2129 if (! (h && h->root.type == bfd_link_hash_undefweak 2130 && FRVFDPIC_SYM_LOCAL (info, h))) 2131 { 2132 /* If the symbol is dynamic and there may be dynamic 2133 symbol resolution because we are or are linked with a 2134 shared library, emit a FUNCDESC relocation such that 2135 the dynamic linker will allocate the function 2136 descriptor. If the symbol needs a non-local function 2137 descriptor but binds locally (e.g., its visibility is 2138 protected, emit a dynamic relocation decayed to 2139 section+offset. */ 2140 if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h) 2141 && FRVFDPIC_SYM_LOCAL (info, h) 2142 && !(info->executable && !info->pie)) 2143 { 2144 dynindx = elf_section_data (h->root.u.def.section 2145 ->output_section)->dynindx; 2146 addend += h->root.u.def.section->output_offset 2147 + h->root.u.def.value; 2148 } 2149 else if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h)) 2150 { 2151 if (addend) 2152 { 2153 info->callbacks->warning 2154 (info, _("R_FRV_FUNCDESC references dynamic symbol with nonzero addend"), 2155 name, input_bfd, input_section, rel->r_offset); 2156 return FALSE; 2157 } 2158 dynindx = h->dynindx; 2159 } 2160 else 2161 { 2162 /* Otherwise, we know we have a private function 2163 descriptor, so reference it directly. */ 2164 BFD_ASSERT (picrel->privfd); 2165 r_type = R_FRV_32; 2166 dynindx = elf_section_data (frvfdpic_got_section (info) 2167 ->output_section)->dynindx; 2168 addend = frvfdpic_got_section (info)->output_offset 2169 + frvfdpic_got_initial_offset (info) 2170 + picrel->fd_entry; 2171 } 2172 2173 /* If there is room for dynamic symbol resolution, emit 2174 the dynamic relocation. However, if we're linking an 2175 executable at a fixed location, we won't have emitted a 2176 dynamic symbol entry for the got section, so idx will 2177 be zero, which means we can and should compute the 2178 address of the private descriptor ourselves. */ 2179 if (info->executable && !info->pie 2180 && (!h || FRVFDPIC_FUNCDESC_LOCAL (info, h))) 2181 { 2182 addend += frvfdpic_got_section (info)->output_section->vma; 2183 if ((bfd_get_section_flags (output_bfd, 2184 input_section->output_section) 2185 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 2186 { 2187 if (_frvfdpic_osec_readonly_p (output_bfd, 2188 input_section 2189 ->output_section)) 2190 { 2191 info->callbacks->warning 2192 (info, 2193 _("cannot emit fixups in read-only section"), 2194 name, input_bfd, input_section, rel->r_offset); 2195 return FALSE; 2196 } 2197 _frvfdpic_add_rofixup (output_bfd, 2198 frvfdpic_gotfixup_section 2199 (info), 2200 _bfd_elf_section_offset 2201 (output_bfd, info, 2202 input_section, rel->r_offset) 2203 + input_section 2204 ->output_section->vma 2205 + input_section->output_offset, 2206 picrel); 2207 } 2208 } 2209 else if ((bfd_get_section_flags (output_bfd, 2210 input_section->output_section) 2211 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 2212 { 2213 if (_frvfdpic_osec_readonly_p (output_bfd, 2214 input_section 2215 ->output_section)) 2216 { 2217 info->callbacks->warning 2218 (info, 2219 _("cannot emit dynamic relocations in read-only section"), 2220 name, input_bfd, input_section, rel->r_offset); 2221 return FALSE; 2222 } 2223 _frvfdpic_add_dyn_reloc (output_bfd, 2224 frvfdpic_gotrel_section (info), 2225 _bfd_elf_section_offset 2226 (output_bfd, info, 2227 input_section, rel->r_offset) 2228 + input_section 2229 ->output_section->vma 2230 + input_section->output_offset, 2231 r_type, dynindx, addend, picrel); 2232 } 2233 else 2234 addend += frvfdpic_got_section (info)->output_section->vma; 2235 } 2236 2237 /* We want the addend in-place because dynamic 2238 relocations are REL. Setting relocation to it should 2239 arrange for it to be installed. */ 2240 relocation = addend - rel->r_addend; 2241 } 2242 check_segment[0] = check_segment[1] = got_segment; 2243 break; 2244 2245 case R_FRV_32: 2246 if (! IS_FDPIC (output_bfd)) 2247 { 2248 check_segment[0] = check_segment[1] = -1; 2249 break; 2250 } 2251 /* Fall through. */ 2252 case R_FRV_FUNCDESC_VALUE: 2253 { 2254 int dynindx; 2255 bfd_vma addend = rel->r_addend; 2256 2257 /* If the symbol is dynamic but binds locally, use 2258 section+offset. */ 2259 if (h && ! FRVFDPIC_SYM_LOCAL (info, h)) 2260 { 2261 if (addend && r_type == R_FRV_FUNCDESC_VALUE) 2262 { 2263 info->callbacks->warning 2264 (info, _("R_FRV_FUNCDESC_VALUE references dynamic symbol with nonzero addend"), 2265 name, input_bfd, input_section, rel->r_offset); 2266 return FALSE; 2267 } 2268 dynindx = h->dynindx; 2269 } 2270 else 2271 { 2272 if (h) 2273 addend += h->root.u.def.value; 2274 else 2275 addend += sym->st_value; 2276 if (osec) 2277 addend += osec->output_offset; 2278 if (osec && osec->output_section 2279 && ! bfd_is_abs_section (osec->output_section) 2280 && ! bfd_is_und_section (osec->output_section)) 2281 dynindx = elf_section_data (osec->output_section)->dynindx; 2282 else 2283 dynindx = 0; 2284 } 2285 2286 /* If we're linking an executable at a fixed address, we 2287 can omit the dynamic relocation as long as the symbol 2288 is defined in the current link unit (which is implied 2289 by its output section not being NULL). */ 2290 if (info->executable && !info->pie 2291 && (!h || FRVFDPIC_SYM_LOCAL (info, h))) 2292 { 2293 if (osec) 2294 addend += osec->output_section->vma; 2295 if (IS_FDPIC (input_bfd) 2296 && (bfd_get_section_flags (output_bfd, 2297 input_section->output_section) 2298 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 2299 { 2300 if (_frvfdpic_osec_readonly_p (output_bfd, 2301 input_section 2302 ->output_section)) 2303 { 2304 info->callbacks->warning 2305 (info, 2306 _("cannot emit fixups in read-only section"), 2307 name, input_bfd, input_section, rel->r_offset); 2308 return FALSE; 2309 } 2310 if (!h || h->root.type != bfd_link_hash_undefweak) 2311 { 2312 _frvfdpic_add_rofixup (output_bfd, 2313 frvfdpic_gotfixup_section 2314 (info), 2315 _bfd_elf_section_offset 2316 (output_bfd, info, 2317 input_section, rel->r_offset) 2318 + input_section 2319 ->output_section->vma 2320 + input_section->output_offset, 2321 picrel); 2322 if (r_type == R_FRV_FUNCDESC_VALUE) 2323 _frvfdpic_add_rofixup 2324 (output_bfd, 2325 frvfdpic_gotfixup_section (info), 2326 _bfd_elf_section_offset 2327 (output_bfd, info, 2328 input_section, rel->r_offset) 2329 + input_section->output_section->vma 2330 + input_section->output_offset + 4, picrel); 2331 } 2332 } 2333 } 2334 else 2335 { 2336 if ((bfd_get_section_flags (output_bfd, 2337 input_section->output_section) 2338 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 2339 { 2340 if (_frvfdpic_osec_readonly_p (output_bfd, 2341 input_section 2342 ->output_section)) 2343 { 2344 info->callbacks->warning 2345 (info, 2346 _("cannot emit dynamic relocations in read-only section"), 2347 name, input_bfd, input_section, rel->r_offset); 2348 return FALSE; 2349 } 2350 _frvfdpic_add_dyn_reloc (output_bfd, 2351 frvfdpic_gotrel_section (info), 2352 _bfd_elf_section_offset 2353 (output_bfd, info, 2354 input_section, rel->r_offset) 2355 + input_section 2356 ->output_section->vma 2357 + input_section->output_offset, 2358 r_type, dynindx, addend, picrel); 2359 } 2360 else if (osec) 2361 addend += osec->output_section->vma; 2362 /* We want the addend in-place because dynamic 2363 relocations are REL. Setting relocation to it 2364 should arrange for it to be installed. */ 2365 relocation = addend - rel->r_addend; 2366 } 2367 2368 if (r_type == R_FRV_FUNCDESC_VALUE) 2369 { 2370 /* If we've omitted the dynamic relocation, just emit 2371 the fixed addresses of the symbol and of the local 2372 GOT base offset. */ 2373 if (info->executable && !info->pie 2374 && (!h || FRVFDPIC_SYM_LOCAL (info, h))) 2375 bfd_put_32 (output_bfd, 2376 frvfdpic_got_section (info)->output_section->vma 2377 + frvfdpic_got_section (info)->output_offset 2378 + frvfdpic_got_initial_offset (info), 2379 contents + rel->r_offset + 4); 2380 else 2381 /* A function descriptor used for lazy or local 2382 resolving is initialized such that its high word 2383 contains the output section index in which the 2384 PLT entries are located, and the low word 2385 contains the offset of the lazy PLT entry entry 2386 point into that section. */ 2387 bfd_put_32 (output_bfd, 2388 h && ! FRVFDPIC_SYM_LOCAL (info, h) 2389 ? 0 2390 : _frvfdpic_osec_to_segment (output_bfd, 2391 sec 2392 ->output_section), 2393 contents + rel->r_offset + 4); 2394 } 2395 } 2396 check_segment[0] = check_segment[1] = got_segment; 2397 break; 2398 2399 case R_FRV_GPREL12: 2400 case R_FRV_GPRELU12: 2401 case R_FRV_GPREL32: 2402 case R_FRV_GPRELHI: 2403 case R_FRV_GPRELLO: 2404 check_segment[0] = gprel_segment; 2405 check_segment[1] = sec 2406 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 2407 : (unsigned)-1; 2408 break; 2409 2410 default: 2411 check_segment[0] = isec_segment; 2412 check_segment[1] = sec 2413 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) 2414 : (unsigned)-1; 2415 break; 2416 } 2417 2418 if (check_segment[0] != check_segment[1] && IS_FDPIC (output_bfd)) 2419 { 2420 #if 1 /* If you take this out, remove the #error from fdpic-static-6.d 2421 in the ld testsuite. */ 2422 /* This helps catch problems in GCC while we can't do more 2423 than static linking. The idea is to test whether the 2424 input file basename is crt0.o only once. */ 2425 if (silence_segment_error == 1) 2426 silence_segment_error = 2427 (strlen (input_bfd->filename) == 6 2428 && strcmp (input_bfd->filename, "crt0.o") == 0) 2429 || (strlen (input_bfd->filename) > 6 2430 && strcmp (input_bfd->filename 2431 + strlen (input_bfd->filename) - 7, 2432 "/crt0.o") == 0) 2433 ? -1 : 0; 2434 #endif 2435 if (!silence_segment_error 2436 /* We don't want duplicate errors for undefined 2437 symbols. */ 2438 && !(picrel && picrel->symndx == -1 2439 && picrel->d.h->root.type == bfd_link_hash_undefined)) 2440 info->callbacks->warning 2441 (info, 2442 (info->shared || info->pie) 2443 ? _("relocations between different segments are not supported") 2444 : _("warning: relocation references a different segment"), 2445 name, input_bfd, input_section, rel->r_offset); 2446 if (!silence_segment_error && (info->shared || info->pie)) 2447 return FALSE; 2448 elf_elfheader (output_bfd)->e_flags |= EF_FRV_PIC; 2449 } 2450 2451 switch (r_type) 2452 { 2453 case R_FRV_GOTOFFHI: 2454 /* We need the addend to be applied before we shift the 2455 value right. */ 2456 relocation += rel->r_addend; 2457 /* Fall through. */ 2458 case R_FRV_GOTHI: 2459 case R_FRV_FUNCDESC_GOTHI: 2460 case R_FRV_FUNCDESC_GOTOFFHI: 2461 relocation >>= 16; 2462 /* Fall through. */ 2463 2464 case R_FRV_GOTLO: 2465 case R_FRV_FUNCDESC_GOTLO: 2466 case R_FRV_GOTOFFLO: 2467 case R_FRV_FUNCDESC_GOTOFFLO: 2468 relocation &= 0xffff; 2469 break; 2470 2471 default: 2472 break; 2473 } 2474 2475 switch (r_type) 2476 { 2477 case R_FRV_LABEL24: 2478 if (! IS_FDPIC (output_bfd) || ! picrel->plt) 2479 break; 2480 /* Fall through. */ 2481 2482 /* When referencing a GOT entry, a function descriptor or a 2483 PLT, we don't want the addend to apply to the reference, 2484 but rather to the referenced symbol. The actual entry 2485 will have already been created taking the addend into 2486 account, so cancel it out here. */ 2487 case R_FRV_GOT12: 2488 case R_FRV_GOTHI: 2489 case R_FRV_GOTLO: 2490 case R_FRV_FUNCDESC_GOT12: 2491 case R_FRV_FUNCDESC_GOTHI: 2492 case R_FRV_FUNCDESC_GOTLO: 2493 case R_FRV_FUNCDESC_GOTOFF12: 2494 case R_FRV_FUNCDESC_GOTOFFHI: 2495 case R_FRV_FUNCDESC_GOTOFFLO: 2496 /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF12 2497 here, since we do want to apply the addend to the others. 2498 Note that we've applied the addend to GOTOFFHI before we 2499 shifted it right. */ 2500 case R_FRV_GOTOFFHI: 2501 relocation -= rel->r_addend; 2502 break; 2503 2504 default: 2505 break; 2506 } 2507 2508 if (r_type == R_FRV_HI16) 2509 r = elf32_frv_relocate_hi16 (input_bfd, rel, contents, relocation); 2510 2511 else if (r_type == R_FRV_LO16) 2512 r = elf32_frv_relocate_lo16 (input_bfd, rel, contents, relocation); 2513 2514 else if (r_type == R_FRV_LABEL24) 2515 r = elf32_frv_relocate_label24 (input_bfd, input_section, rel, 2516 contents, relocation); 2517 2518 else if (r_type == R_FRV_GPREL12) 2519 r = elf32_frv_relocate_gprel12 (info, input_bfd, input_section, rel, 2520 contents, relocation); 2521 2522 else if (r_type == R_FRV_GPRELU12) 2523 r = elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, rel, 2524 contents, relocation); 2525 2526 else if (r_type == R_FRV_GPRELLO) 2527 r = elf32_frv_relocate_gprello (info, input_bfd, input_section, rel, 2528 contents, relocation); 2529 2530 else if (r_type == R_FRV_GPRELHI) 2531 r = elf32_frv_relocate_gprelhi (info, input_bfd, input_section, rel, 2532 contents, relocation); 2533 2534 else 2535 r = frv_final_link_relocate (howto, input_bfd, input_section, contents, 2536 rel, relocation); 2537 2538 if (r != bfd_reloc_ok) 2539 { 2540 const char * msg = (const char *) NULL; 2541 2542 switch (r) 2543 { 2544 case bfd_reloc_overflow: 2545 r = info->callbacks->reloc_overflow 2546 (info, name, howto->name, (bfd_vma) 0, 2547 input_bfd, input_section, rel->r_offset); 2548 break; 2549 2550 case bfd_reloc_undefined: 2551 r = info->callbacks->undefined_symbol 2552 (info, name, input_bfd, input_section, rel->r_offset, TRUE); 2553 break; 2554 2555 case bfd_reloc_outofrange: 2556 msg = _("internal error: out of range error"); 2557 break; 2558 2559 case bfd_reloc_notsupported: 2560 msg = _("internal error: unsupported relocation error"); 2561 break; 2562 2563 case bfd_reloc_dangerous: 2564 msg = _("internal error: dangerous relocation"); 2565 break; 2566 2567 default: 2568 msg = _("internal error: unknown error"); 2569 break; 2570 } 2571 2572 if (msg) 2573 r = info->callbacks->warning 2574 (info, msg, name, input_bfd, input_section, rel->r_offset); 2575 2576 if (! r) 2577 return FALSE; 2578 } 2579 } 2580 2581 return TRUE; 2582 } 2583 2584 /* Return the section that should be marked against GC for a given 2585 relocation. */ 2586 2587 static asection * 2588 elf32_frv_gc_mark_hook (sec, info, rel, h, sym) 2589 asection *sec; 2590 struct bfd_link_info *info ATTRIBUTE_UNUSED; 2591 Elf_Internal_Rela *rel; 2592 struct elf_link_hash_entry *h; 2593 Elf_Internal_Sym *sym; 2594 { 2595 if (h != NULL) 2596 { 2597 switch (ELF32_R_TYPE (rel->r_info)) 2598 { 2599 case R_FRV_GNU_VTINHERIT: 2600 case R_FRV_GNU_VTENTRY: 2601 break; 2602 2603 default: 2604 switch (h->root.type) 2605 { 2606 default: 2607 break; 2608 2609 case bfd_link_hash_defined: 2610 case bfd_link_hash_defweak: 2611 return h->root.u.def.section; 2612 2613 case bfd_link_hash_common: 2614 return h->root.u.c.p->section; 2615 } 2616 } 2617 } 2618 else 2619 return bfd_section_from_elf_index (sec->owner, sym->st_shndx); 2620 2621 return NULL; 2622 } 2623 2624 /* Update the got entry reference counts for the section being removed. */ 2625 2626 static bfd_boolean 2627 elf32_frv_gc_sweep_hook (abfd, info, sec, relocs) 2628 bfd *abfd ATTRIBUTE_UNUSED; 2629 struct bfd_link_info *info ATTRIBUTE_UNUSED; 2630 asection *sec ATTRIBUTE_UNUSED; 2631 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED; 2632 { 2633 return TRUE; 2634 } 2635 2636 2637 /* Hook called by the linker routine which adds symbols from an object 2638 file. We use it to put .comm items in .scomm, and not .comm. */ 2639 2640 static bfd_boolean 2641 elf32_frv_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) 2642 bfd *abfd; 2643 struct bfd_link_info *info; 2644 Elf_Internal_Sym *sym; 2645 const char **namep ATTRIBUTE_UNUSED; 2646 flagword *flagsp ATTRIBUTE_UNUSED; 2647 asection **secp; 2648 bfd_vma *valp; 2649 { 2650 if (sym->st_shndx == SHN_COMMON 2651 && !info->relocatable 2652 && (int)sym->st_size <= (int)bfd_get_gp_size (abfd)) 2653 { 2654 /* Common symbols less than or equal to -G nn bytes are 2655 automatically put into .sbss. */ 2656 2657 asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); 2658 2659 if (scomm == NULL) 2660 { 2661 scomm = bfd_make_section (abfd, ".scommon"); 2662 if (scomm == NULL 2663 || !bfd_set_section_flags (abfd, scomm, (SEC_ALLOC 2664 | SEC_IS_COMMON 2665 | SEC_LINKER_CREATED))) 2666 return FALSE; 2667 } 2668 2669 *secp = scomm; 2670 *valp = sym->st_size; 2671 } 2672 2673 return TRUE; 2674 } 2675 2676 /* Create a .got section, as well as its additional info field. This 2677 is almost entirely copied from 2678 elflink.c:_bfd_elf_create_got_section(). */ 2679 2680 static bfd_boolean 2681 _frv_create_got_section (bfd *abfd, struct bfd_link_info *info) 2682 { 2683 flagword flags; 2684 asection *s; 2685 struct elf_link_hash_entry *h; 2686 struct bfd_link_hash_entry *bh; 2687 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 2688 int ptralign; 2689 int offset; 2690 2691 /* This function may be called more than once. */ 2692 s = bfd_get_section_by_name (abfd, ".got"); 2693 if (s != NULL && (s->flags & SEC_LINKER_CREATED) != 0) 2694 return TRUE; 2695 2696 /* Machine specific: although pointers are 32-bits wide, we want the 2697 GOT to be aligned to a 64-bit boundary, such that function 2698 descriptors in it can be accessed with 64-bit loads and 2699 stores. */ 2700 ptralign = 3; 2701 2702 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 2703 | SEC_LINKER_CREATED); 2704 2705 s = bfd_make_section (abfd, ".got"); 2706 if (s == NULL 2707 || !bfd_set_section_flags (abfd, s, flags) 2708 || !bfd_set_section_alignment (abfd, s, ptralign)) 2709 return FALSE; 2710 2711 if (bed->want_got_plt) 2712 { 2713 s = bfd_make_section (abfd, ".got.plt"); 2714 if (s == NULL 2715 || !bfd_set_section_flags (abfd, s, flags) 2716 || !bfd_set_section_alignment (abfd, s, ptralign)) 2717 return FALSE; 2718 } 2719 2720 if (bed->want_got_sym) 2721 { 2722 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got 2723 (or .got.plt) section. We don't do this in the linker script 2724 because we don't want to define the symbol if we are not creating 2725 a global offset table. */ 2726 bh = NULL; 2727 if (!(_bfd_generic_link_add_one_symbol 2728 (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, 2729 bed->got_symbol_offset, (const char *) NULL, FALSE, 2730 bed->collect, &bh))) 2731 return FALSE; 2732 h = (struct elf_link_hash_entry *) bh; 2733 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; 2734 h->type = STT_OBJECT; 2735 2736 /* Machine-specific: we want the symbol for executables as 2737 well. */ 2738 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2739 return FALSE; 2740 2741 elf_hash_table (info)->hgot = h; 2742 } 2743 2744 /* The first bit of the global offset table is the header. */ 2745 s->_raw_size += bed->got_header_size + bed->got_symbol_offset; 2746 2747 /* This is the machine-specific part. Create and initialize section 2748 data for the got. */ 2749 if (IS_FDPIC (abfd)) 2750 { 2751 frvfdpic_got_section (info) = s; 2752 frvfdpic_relocs_info (info) = htab_try_create (1, frvfdpic_relocs_info_hash, 2753 frvfdpic_relocs_info_eq, 2754 (htab_del) NULL); 2755 if (! frvfdpic_relocs_info (info)) 2756 return FALSE; 2757 2758 s = bfd_make_section (abfd, ".rel.got"); 2759 if (s == NULL 2760 || ! bfd_set_section_flags (abfd, s, (flags | SEC_READONLY)) 2761 || ! bfd_set_section_alignment (abfd, s, 2)) 2762 return FALSE; 2763 2764 frvfdpic_gotrel_section (info) = s; 2765 2766 /* Machine-specific. */ 2767 s = bfd_make_section (abfd, ".rofixup"); 2768 if (s == NULL 2769 || ! bfd_set_section_flags (abfd, s, (flags | SEC_READONLY)) 2770 || ! bfd_set_section_alignment (abfd, s, 2)) 2771 return FALSE; 2772 2773 frvfdpic_gotfixup_section (info) = s; 2774 offset = -2048; 2775 flags = BSF_GLOBAL; 2776 } 2777 else 2778 { 2779 offset = 2048; 2780 flags = BSF_GLOBAL | BSF_WEAK; 2781 } 2782 2783 /* Define _gp in .rofixup, for FDPIC, or .got otherwise. If it 2784 turns out that we're linking with a different linker script, the 2785 linker script will override it. */ 2786 bh = NULL; 2787 if (!(_bfd_generic_link_add_one_symbol 2788 (info, abfd, "_gp", flags, s, offset, (const char *) NULL, FALSE, 2789 bed->collect, &bh))) 2790 return FALSE; 2791 h = (struct elf_link_hash_entry *) bh; 2792 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; 2793 h->type = STT_OBJECT; 2794 2795 /* Machine-specific: we want the symbol for executables as well. */ 2796 if (IS_FDPIC (abfd) && ! bfd_elf_link_record_dynamic_symbol (info, h)) 2797 return FALSE; 2798 2799 return TRUE; 2800 } 2801 2802 /* Make sure the got and plt sections exist, and that our pointers in 2803 the link hash table point to them. */ 2804 2805 static bfd_boolean 2806 elf32_frvfdpic_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 2807 { 2808 /* This is mostly copied from 2809 elflink.c:_bfd_elf_create_dynamic_sections(). */ 2810 flagword flags, pltflags; 2811 asection *s; 2812 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 2813 2814 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and 2815 .rel[a].bss sections. */ 2816 2817 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 2818 | SEC_LINKER_CREATED); 2819 2820 pltflags = flags; 2821 pltflags |= SEC_CODE; 2822 if (bed->plt_not_loaded) 2823 pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS); 2824 if (bed->plt_readonly) 2825 pltflags |= SEC_READONLY; 2826 2827 s = bfd_make_section (abfd, ".plt"); 2828 if (s == NULL 2829 || ! bfd_set_section_flags (abfd, s, pltflags) 2830 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) 2831 return FALSE; 2832 /* FRV-specific: remember it. */ 2833 frvfdpic_plt_section (info) = s; 2834 2835 if (bed->want_plt_sym) 2836 { 2837 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the 2838 .plt section. */ 2839 struct elf_link_hash_entry *h; 2840 struct bfd_link_hash_entry *bh = NULL; 2841 2842 if (! (_bfd_generic_link_add_one_symbol 2843 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, 0, NULL, 2844 FALSE, get_elf_backend_data (abfd)->collect, &bh))) 2845 return FALSE; 2846 h = (struct elf_link_hash_entry *) bh; 2847 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; 2848 h->type = STT_OBJECT; 2849 2850 if (! info->executable 2851 && ! bfd_elf_link_record_dynamic_symbol (info, h)) 2852 return FALSE; 2853 } 2854 2855 /* FRV-specific: we want rel relocations for the plt. */ 2856 s = bfd_make_section (abfd, ".rel.plt"); 2857 if (s == NULL 2858 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) 2859 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 2860 return FALSE; 2861 /* FRV-specific: remember it. */ 2862 frvfdpic_pltrel_section (info) = s; 2863 2864 /* FRV-specific: we want to create the GOT in the FRV way. */ 2865 if (! _frv_create_got_section (abfd, info)) 2866 return FALSE; 2867 2868 /* FRV-specific: make sure we created everything we wanted. */ 2869 BFD_ASSERT (frvfdpic_got_section (info) && frvfdpic_gotrel_section (info) 2870 && frvfdpic_gotfixup_section (info) 2871 && frvfdpic_plt_section (info) 2872 && frvfdpic_pltrel_section (info)); 2873 2874 if (bed->want_dynbss) 2875 { 2876 /* The .dynbss section is a place to put symbols which are defined 2877 by dynamic objects, are referenced by regular objects, and are 2878 not functions. We must allocate space for them in the process 2879 image and use a R_*_COPY reloc to tell the dynamic linker to 2880 initialize them at run time. The linker script puts the .dynbss 2881 section into the .bss section of the final image. */ 2882 s = bfd_make_section (abfd, ".dynbss"); 2883 if (s == NULL 2884 || ! bfd_set_section_flags (abfd, s, SEC_ALLOC | SEC_LINKER_CREATED)) 2885 return FALSE; 2886 2887 /* The .rel[a].bss section holds copy relocs. This section is not 2888 normally needed. We need to create it here, though, so that the 2889 linker will map it to an output section. We can't just create it 2890 only if we need it, because we will not know whether we need it 2891 until we have seen all the input files, and the first time the 2892 main linker code calls BFD after examining all the input files 2893 (size_dynamic_sections) the input sections have already been 2894 mapped to the output sections. If the section turns out not to 2895 be needed, we can discard it later. We will never need this 2896 section when generating a shared object, since they do not use 2897 copy relocs. */ 2898 if (! info->shared) 2899 { 2900 s = bfd_make_section (abfd, 2901 (bed->default_use_rela_p 2902 ? ".rela.bss" : ".rel.bss")); 2903 if (s == NULL 2904 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) 2905 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 2906 return FALSE; 2907 } 2908 } 2909 2910 return TRUE; 2911 } 2912 2913 /* The name of the dynamic interpreter. This is put in the .interp 2914 section. */ 2915 2916 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" 2917 2918 #define DEFAULT_STACK_SIZE 0x20000 2919 2920 /* This structure is used to collect the number of entries present in 2921 each addressable range of the got. */ 2922 struct _frvfdpic_dynamic_got_info 2923 { 2924 /* Several bits of information about the current link. */ 2925 struct bfd_link_info *info; 2926 /* Total size needed for GOT entries within the 12-, 16- or 32-bit 2927 ranges. */ 2928 bfd_vma got12, gotlos, gothilo; 2929 /* Total size needed for function descriptor entries within the 12-, 2930 16- or 32-bit ranges. */ 2931 bfd_vma fd12, fdlos, fdhilo; 2932 /* Total size needed function descriptor entries referenced in PLT 2933 entries, that would be profitable to place in offsets close to 2934 the PIC register. */ 2935 bfd_vma fdplt; 2936 /* Total size needed by lazy PLT entries. */ 2937 bfd_vma lzplt; 2938 /* Number of relocations carried over from input object files. */ 2939 unsigned long relocs; 2940 /* Number of fixups introduced by relocations in input object files. */ 2941 unsigned long fixups; 2942 }; 2943 2944 /* Compute the total GOT size required by each symbol in each range. 2945 Symbols may require up to 4 words in the GOT: an entry pointing to 2946 the symbol, an entry pointing to its function descriptor, and a 2947 private function descriptors taking two words. */ 2948 2949 static int 2950 _frvfdpic_count_got_plt_entries (void **entryp, void *dinfo_) 2951 { 2952 struct frvfdpic_relocs_info *entry = *entryp; 2953 struct _frvfdpic_dynamic_got_info *dinfo = dinfo_; 2954 unsigned relocs = 0, fixups = 0; 2955 2956 /* Allocate space for a GOT entry pointing to the symbol. */ 2957 if (entry->got12) 2958 dinfo->got12 += 4; 2959 else if (entry->gotlos) 2960 dinfo->gotlos += 4; 2961 else if (entry->gothilo) 2962 dinfo->gothilo += 4; 2963 else 2964 entry->relocs32--; 2965 entry->relocs32++; 2966 2967 /* Allocate space for a GOT entry pointing to the function 2968 descriptor. */ 2969 if (entry->fdgot12) 2970 dinfo->got12 += 4; 2971 else if (entry->fdgotlos) 2972 dinfo->gotlos += 4; 2973 else if (entry->fdgothilo) 2974 dinfo->gothilo += 4; 2975 else 2976 entry->relocsfd--; 2977 entry->relocsfd++; 2978 2979 /* Decide whether we need a PLT entry, a function descriptor in the 2980 GOT, and a lazy PLT entry for this symbol. */ 2981 entry->plt = entry->call 2982 && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) 2983 && elf_hash_table (dinfo->info)->dynamic_sections_created; 2984 entry->privfd = entry->plt 2985 || entry->fdgoff12 || entry->fdgofflos || entry->fdgoffhilo 2986 || ((entry->fd || entry->fdgot12 || entry->fdgotlos || entry->fdgothilo) 2987 && (entry->symndx != -1 2988 || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h))); 2989 entry->lazyplt = entry->privfd 2990 && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) 2991 && ! (dinfo->info->flags & DF_BIND_NOW) 2992 && elf_hash_table (dinfo->info)->dynamic_sections_created; 2993 2994 /* Allocate space for a function descriptor. */ 2995 if (entry->fdgoff12) 2996 dinfo->fd12 += 8; 2997 else if (entry->fdgofflos) 2998 dinfo->fdlos += 8; 2999 else if (entry->privfd && entry->plt) 3000 dinfo->fdplt += 8; 3001 else if (entry->privfd) 3002 dinfo->fdhilo += 8; 3003 else 3004 entry->relocsfdv--; 3005 entry->relocsfdv++; 3006 3007 if (entry->lazyplt) 3008 dinfo->lzplt += 8; 3009 3010 if (!dinfo->info->executable || dinfo->info->pie) 3011 relocs = entry->relocs32 + entry->relocsfd + entry->relocsfdv; 3012 else 3013 { 3014 if (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)) 3015 { 3016 if (entry->symndx != -1 3017 || entry->d.h->root.type != bfd_link_hash_undefweak) 3018 fixups += entry->relocs32 + 2 * entry->relocsfdv; 3019 } 3020 else 3021 relocs += entry->relocs32 + entry->relocsfdv; 3022 3023 if (entry->symndx != -1 3024 || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h)) 3025 { 3026 if (entry->symndx != -1 3027 || entry->d.h->root.type != bfd_link_hash_undefweak) 3028 fixups += entry->relocsfd; 3029 } 3030 else 3031 relocs += entry->relocsfd; 3032 } 3033 3034 entry->dynrelocs += relocs; 3035 entry->fixups += fixups; 3036 dinfo->relocs += relocs; 3037 dinfo->fixups += fixups; 3038 3039 return 1; 3040 } 3041 3042 /* This structure is used to assign offsets to got entries, function 3043 descriptors, plt entries and lazy plt entries. */ 3044 3045 struct _frvfdpic_dynamic_got_plt_info 3046 { 3047 /* Summary information collected with _frvfdpic_count_got_plt_entries. */ 3048 struct _frvfdpic_dynamic_got_info g; 3049 3050 /* For each addressable range, we record a MAX (positive) and MIN 3051 (negative) value. CUR is used to assign got entries, and it's 3052 incremented from an initial positive value to MAX, then from MIN 3053 to FDCUR (unless FDCUR wraps around first). FDCUR is used to 3054 assign function descriptors, and it's decreased from an initial 3055 non-positive value to MIN, then from MAX down to CUR (unless CUR 3056 wraps around first). All of MIN, MAX, CUR and FDCUR always point 3057 to even words. ODD, if non-zero, indicates an odd word to be 3058 used for the next got entry, otherwise CUR is used and 3059 incremented by a pair of words, wrapping around when it reaches 3060 MAX. FDCUR is decremented (and wrapped) before the next function 3061 descriptor is chosen. FDPLT indicates the number of remaining 3062 slots that can be used for function descriptors used only by PLT 3063 entries. */ 3064 struct _frvfdpic_dynamic_got_alloc_data 3065 { 3066 bfd_signed_vma max, cur, odd, fdcur, min; 3067 bfd_vma fdplt; 3068 } got12, gotlos, gothilo; 3069 }; 3070 3071 /* Determine the positive and negative ranges to be used by each 3072 offset range in the GOT. FDCUR and CUR, that must be aligned to a 3073 double-word boundary, are the minimum (negative) and maximum 3074 (positive) GOT offsets already used by previous ranges, except for 3075 an ODD entry that may have been left behind. GOT and FD indicate 3076 the size of GOT entries and function descriptors that must be 3077 placed within the range from -WRAP to WRAP. If there's room left, 3078 up to FDPLT bytes should be reserved for additional function 3079 descriptors. */ 3080 3081 inline static bfd_signed_vma 3082 _frvfdpic_compute_got_alloc_data (struct _frvfdpic_dynamic_got_alloc_data *gad, 3083 bfd_signed_vma fdcur, 3084 bfd_signed_vma odd, 3085 bfd_signed_vma cur, 3086 bfd_vma got, 3087 bfd_vma fd, 3088 bfd_vma fdplt, 3089 bfd_vma wrap) 3090 { 3091 bfd_signed_vma wrapmin = -wrap; 3092 3093 /* Start at the given initial points. */ 3094 gad->fdcur = fdcur; 3095 gad->cur = cur; 3096 3097 /* If we had an incoming odd word and we have any got entries that 3098 are going to use it, consume it, otherwise leave gad->odd at 3099 zero. We might force gad->odd to zero and return the incoming 3100 odd such that it is used by the next range, but then GOT entries 3101 might appear to be out of order and we wouldn't be able to 3102 shorten the GOT by one word if it turns out to end with an 3103 unpaired GOT entry. */ 3104 if (odd && got) 3105 { 3106 gad->odd = odd; 3107 got -= 4; 3108 odd = 0; 3109 } 3110 else 3111 gad->odd = 0; 3112 3113 /* If we're left with an unpaired GOT entry, compute its location 3114 such that we can return it. Otherwise, if got doesn't require an 3115 odd number of words here, either odd was already zero in the 3116 block above, or it was set to zero because got was non-zero, or 3117 got was already zero. In the latter case, we want the value of 3118 odd to carry over to the return statement, so we don't want to 3119 reset odd unless the condition below is true. */ 3120 if (got & 4) 3121 { 3122 odd = cur + got; 3123 got += 4; 3124 } 3125 3126 /* Compute the tentative boundaries of this range. */ 3127 gad->max = cur + got; 3128 gad->min = fdcur - fd; 3129 gad->fdplt = 0; 3130 3131 /* If function descriptors took too much space, wrap some of them 3132 around. */ 3133 if (gad->min < wrapmin) 3134 { 3135 gad->max += wrapmin - gad->min; 3136 gad->min = wrapmin; 3137 } 3138 /* If there is space left and we have function descriptors 3139 referenced in PLT entries that could take advantage of shorter 3140 offsets, place them here. */ 3141 else if (fdplt && gad->min > wrapmin) 3142 { 3143 bfd_vma fds; 3144 if ((bfd_vma) (gad->min - wrapmin) < fdplt) 3145 fds = gad->min - wrapmin; 3146 else 3147 fds = fdplt; 3148 3149 fdplt -= fds; 3150 gad->min -= fds; 3151 gad->fdplt += fds; 3152 } 3153 3154 /* If GOT entries took too much space, wrap some of them around. 3155 This may well cause gad->min to become lower than wrapmin. This 3156 will cause a relocation overflow later on, so we don't have to 3157 report it here . */ 3158 if ((bfd_vma) gad->max > wrap) 3159 { 3160 gad->min -= gad->max - wrap; 3161 gad->max = wrap; 3162 } 3163 /* If there is more space left, try to place some more function 3164 descriptors for PLT entries. */ 3165 else if (fdplt && (bfd_vma) gad->max < wrap) 3166 { 3167 bfd_vma fds; 3168 if ((bfd_vma) (wrap - gad->max) < fdplt) 3169 fds = wrap - gad->max; 3170 else 3171 fds = fdplt; 3172 3173 fdplt -= fds; 3174 gad->max += fds; 3175 gad->fdplt += fds; 3176 } 3177 3178 /* If odd was initially computed as an offset past the wrap point, 3179 wrap it around. */ 3180 if (odd > gad->max) 3181 odd = gad->min + odd - gad->max; 3182 3183 /* _frvfdpic_get_got_entry() below will always wrap gad->cur if needed 3184 before returning, so do it here too. This guarantees that, 3185 should cur and fdcur meet at the wrap point, they'll both be 3186 equal to min. */ 3187 if (gad->cur == gad->max) 3188 gad->cur = gad->min; 3189 3190 return odd; 3191 } 3192 3193 /* Compute the location of the next GOT entry, given the allocation 3194 data for a range. */ 3195 3196 inline static bfd_signed_vma 3197 _frvfdpic_get_got_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) 3198 { 3199 bfd_signed_vma ret; 3200 3201 if (gad->odd) 3202 { 3203 /* If there was an odd word left behind, use it. */ 3204 ret = gad->odd; 3205 gad->odd = 0; 3206 } 3207 else 3208 { 3209 /* Otherwise, use the word pointed to by cur, reserve the next 3210 as an odd word, and skip to the next pair of words, possibly 3211 wrapping around. */ 3212 ret = gad->cur; 3213 gad->odd = gad->cur + 4; 3214 gad->cur += 8; 3215 if (gad->cur == gad->max) 3216 gad->cur = gad->min; 3217 } 3218 3219 return ret; 3220 } 3221 3222 /* Compute the location of the next function descriptor entry in the 3223 GOT, given the allocation data for a range. */ 3224 3225 inline static bfd_signed_vma 3226 _frvfdpic_get_fd_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) 3227 { 3228 /* If we're at the bottom, wrap around, and only then allocate the 3229 next pair of words. */ 3230 if (gad->fdcur == gad->min) 3231 gad->fdcur = gad->max; 3232 return gad->fdcur -= 8; 3233 } 3234 3235 /* Assign GOT offsets for every GOT entry and function descriptor. 3236 Doing everything in a single pass is tricky. */ 3237 3238 static int 3239 _frvfdpic_assign_got_entries (void **entryp, void *info_) 3240 { 3241 struct frvfdpic_relocs_info *entry = *entryp; 3242 struct _frvfdpic_dynamic_got_plt_info *dinfo = info_; 3243 3244 if (entry->got12) 3245 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->got12); 3246 else if (entry->gotlos) 3247 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); 3248 else if (entry->gothilo) 3249 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); 3250 3251 if (entry->fdgot12) 3252 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->got12); 3253 else if (entry->fdgotlos) 3254 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); 3255 else if (entry->fdgothilo) 3256 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); 3257 3258 if (entry->fdgoff12) 3259 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12); 3260 else if (entry->plt && dinfo->got12.fdplt) 3261 { 3262 dinfo->got12.fdplt -= 8; 3263 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12); 3264 } 3265 else if (entry->fdgofflos) 3266 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos); 3267 else if (entry->plt && dinfo->gotlos.fdplt) 3268 { 3269 dinfo->gotlos.fdplt -= 8; 3270 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos); 3271 } 3272 else if (entry->plt) 3273 { 3274 dinfo->gothilo.fdplt -= 8; 3275 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo); 3276 } 3277 else if (entry->privfd) 3278 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo); 3279 3280 return 1; 3281 } 3282 3283 /* Assign GOT offsets to private function descriptors used by PLT 3284 entries (or referenced by 32-bit offsets), as well as PLT entries 3285 and lazy PLT entries. */ 3286 3287 static int 3288 _frvfdpic_assign_plt_entries (void **entryp, void *info_) 3289 { 3290 struct frvfdpic_relocs_info *entry = *entryp; 3291 struct _frvfdpic_dynamic_got_plt_info *dinfo = info_; 3292 3293 /* If this symbol requires a local function descriptor, allocate 3294 one. */ 3295 if (entry->privfd && entry->fd_entry == 0) 3296 { 3297 if (dinfo->got12.fdplt) 3298 { 3299 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12); 3300 dinfo->got12.fdplt -= 8; 3301 } 3302 else if (dinfo->gotlos.fdplt) 3303 { 3304 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos); 3305 dinfo->gotlos.fdplt -= 8; 3306 } 3307 else 3308 { 3309 BFD_ASSERT (dinfo->gothilo.fdplt) 3310 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo); 3311 dinfo->gothilo.fdplt -= 8; 3312 } 3313 } 3314 3315 if (entry->plt) 3316 { 3317 int size; 3318 3319 /* We use the section's raw size to mark the location of the 3320 next PLT entry. */ 3321 entry->plt_entry = frvfdpic_plt_section (dinfo->g.info)->_raw_size; 3322 3323 /* Figure out the length of this PLT entry based on the 3324 addressing mode we need to reach the function descriptor. */ 3325 BFD_ASSERT (entry->fd_entry); 3326 if (entry->fd_entry >= -(1 << (12 - 1)) 3327 && entry->fd_entry < (1 << (12 - 1))) 3328 size = 8; 3329 else if (entry->fd_entry >= -(1 << (16 - 1)) 3330 && entry->fd_entry < (1 << (16 - 1))) 3331 size = 12; 3332 else 3333 size = 16; 3334 3335 frvfdpic_plt_section (dinfo->g.info)->_raw_size += size; 3336 } 3337 3338 if (entry->lazyplt) 3339 { 3340 entry->lzplt_entry = dinfo->g.lzplt; 3341 dinfo->g.lzplt += 8; 3342 /* If this entry is the one that gets the resolver stub, account 3343 for the additional instruction. */ 3344 if (entry->lzplt_entry % FRVFDPIC_LZPLT_BLOCK_SIZE 3345 == FRVFDPIC_LZPLT_RESOLV_LOC) 3346 dinfo->g.lzplt += 4; 3347 } 3348 3349 return 1; 3350 } 3351 3352 /* Follow indirect and warning hash entries so that each got entry 3353 points to the final symbol definition. P must point to a pointer 3354 to the hash table we're traversing. Since this traversal may 3355 modify the hash table, we set this pointer to NULL to indicate 3356 we've made a potentially-destructive change to the hash table, so 3357 the traversal must be restarted. */ 3358 static int 3359 _frvfdpic_resolve_final_relocs_info (void **entryp, void *p) 3360 { 3361 struct frvfdpic_relocs_info *entry = *entryp; 3362 htab_t *htab = p; 3363 3364 if (entry->symndx == -1) 3365 { 3366 struct elf_link_hash_entry *h = entry->d.h; 3367 struct frvfdpic_relocs_info *oentry; 3368 3369 while (h->root.type == bfd_link_hash_indirect 3370 || h->root.type == bfd_link_hash_warning) 3371 h = (struct elf_link_hash_entry *)h->root.u.i.link; 3372 3373 if (entry->d.h == h) 3374 return 1; 3375 3376 oentry = frvfdpic_relocs_info_for_global (*htab, 0, h, entry->addend, 3377 NO_INSERT); 3378 3379 if (oentry) 3380 { 3381 /* Merge the two entries. */ 3382 frvfdpic_pic_merge_early_relocs_info (oentry, entry); 3383 htab_clear_slot (*htab, entryp); 3384 return 1; 3385 } 3386 3387 entry->d.h = h; 3388 3389 /* If we can't find this entry with the new bfd hash, re-insert 3390 it, and get the traversal restarted. */ 3391 if (! htab_find (*htab, entry)) 3392 { 3393 htab_clear_slot (*htab, entryp); 3394 entryp = htab_find_slot (*htab, entry, INSERT); 3395 if (! *entryp) 3396 *entryp = entry; 3397 /* Abort the traversal, since the whole table may have 3398 moved, and leave it up to the parent to restart the 3399 process. */ 3400 *(htab_t *)p = NULL; 3401 return 0; 3402 } 3403 } 3404 3405 return 1; 3406 } 3407 3408 /* Set the sizes of the dynamic sections. */ 3409 3410 static bfd_boolean 3411 elf32_frvfdpic_size_dynamic_sections (bfd *output_bfd, 3412 struct bfd_link_info *info) 3413 { 3414 bfd *dynobj; 3415 asection *s; 3416 struct _frvfdpic_dynamic_got_plt_info gpinfo; 3417 bfd_signed_vma odd; 3418 bfd_vma limit; 3419 3420 dynobj = elf_hash_table (info)->dynobj; 3421 BFD_ASSERT (dynobj != NULL); 3422 3423 if (elf_hash_table (info)->dynamic_sections_created) 3424 { 3425 /* Set the contents of the .interp section to the interpreter. */ 3426 if (info->executable) 3427 { 3428 s = bfd_get_section_by_name (dynobj, ".interp"); 3429 BFD_ASSERT (s != NULL); 3430 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; 3431 s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; 3432 } 3433 } 3434 3435 memset (&gpinfo, 0, sizeof (gpinfo)); 3436 gpinfo.g.info = info; 3437 3438 for (;;) 3439 { 3440 htab_t relocs = frvfdpic_relocs_info (info); 3441 3442 htab_traverse (relocs, _frvfdpic_resolve_final_relocs_info, &relocs); 3443 3444 if (relocs == frvfdpic_relocs_info (info)) 3445 break; 3446 } 3447 3448 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_count_got_plt_entries, 3449 &gpinfo.g); 3450 3451 odd = 12; 3452 /* Compute the total size taken by entries in the 12-bit and 16-bit 3453 ranges, to tell how many PLT function descriptors we can bring 3454 into the 12-bit range without causing the 16-bit range to 3455 overflow. */ 3456 limit = odd + gpinfo.g.got12 + gpinfo.g.gotlos 3457 + gpinfo.g.fd12 + gpinfo.g.fdlos; 3458 if (limit < (bfd_vma)1 << 16) 3459 limit = ((bfd_vma)1 << 16) - limit; 3460 else 3461 limit = 0; 3462 if (gpinfo.g.fdplt < limit) 3463 limit = gpinfo.g.fdplt; 3464 3465 /* Determine the ranges of GOT offsets that we can use for each 3466 range of addressing modes. */ 3467 odd = _frvfdpic_compute_got_alloc_data (&gpinfo.got12, 3468 0, 3469 odd, 3470 16, 3471 gpinfo.g.got12, 3472 gpinfo.g.fd12, 3473 limit, 3474 (bfd_vma)1 << (12-1)); 3475 odd = _frvfdpic_compute_got_alloc_data (&gpinfo.gotlos, 3476 gpinfo.got12.min, 3477 odd, 3478 gpinfo.got12.max, 3479 gpinfo.g.gotlos, 3480 gpinfo.g.fdlos, 3481 gpinfo.g.fdplt - gpinfo.got12.fdplt, 3482 (bfd_vma)1 << (16-1)); 3483 odd = _frvfdpic_compute_got_alloc_data (&gpinfo.gothilo, 3484 gpinfo.gotlos.min, 3485 odd, 3486 gpinfo.gotlos.max, 3487 gpinfo.g.gothilo, 3488 gpinfo.g.fdhilo, 3489 gpinfo.g.fdplt - gpinfo.got12.fdplt 3490 - gpinfo.gotlos.fdplt, 3491 (bfd_vma)1 << (32-1)); 3492 3493 /* Now assign (most) GOT offsets. */ 3494 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_got_entries, 3495 &gpinfo); 3496 3497 frvfdpic_got_section (info)->_raw_size = gpinfo.gothilo.max 3498 - gpinfo.gothilo.min 3499 /* If an odd word is the last word of the GOT, we don't need this 3500 word to be part of the GOT. */ 3501 - (odd + 4 == gpinfo.gothilo.max ? 4 : 0); 3502 if (frvfdpic_got_section (info)->_raw_size == 0) 3503 frvfdpic_got_section (info)->flags |= SEC_EXCLUDE; 3504 else if (frvfdpic_got_section (info)->_raw_size == 12 3505 && ! elf_hash_table (info)->dynamic_sections_created) 3506 { 3507 frvfdpic_got_section (info)->flags |= SEC_EXCLUDE; 3508 frvfdpic_got_section (info)->_raw_size = 0; 3509 } 3510 else 3511 { 3512 frvfdpic_got_section (info)->contents = 3513 (bfd_byte *) bfd_zalloc (dynobj, 3514 frvfdpic_got_section (info)->_raw_size); 3515 if (frvfdpic_got_section (info)->contents == NULL) 3516 return FALSE; 3517 } 3518 3519 if (elf_hash_table (info)->dynamic_sections_created) 3520 /* Subtract the number of lzplt entries, since those will generate 3521 relocations in the pltrel section. */ 3522 frvfdpic_gotrel_section (info)->_raw_size = 3523 (gpinfo.g.relocs - gpinfo.g.lzplt / 8) 3524 * get_elf_backend_data (output_bfd)->s->sizeof_rel; 3525 else 3526 BFD_ASSERT (gpinfo.g.relocs == 0); 3527 if (frvfdpic_gotrel_section (info)->_raw_size == 0) 3528 frvfdpic_gotrel_section (info)->flags |= SEC_EXCLUDE; 3529 else 3530 { 3531 frvfdpic_gotrel_section (info)->contents = 3532 (bfd_byte *) bfd_zalloc (dynobj, 3533 frvfdpic_gotrel_section (info)->_raw_size); 3534 if (frvfdpic_gotrel_section (info)->contents == NULL) 3535 return FALSE; 3536 } 3537 3538 frvfdpic_gotfixup_section (info)->_raw_size = (gpinfo.g.fixups + 1) * 4; 3539 if (frvfdpic_gotfixup_section (info)->_raw_size == 0) 3540 frvfdpic_gotfixup_section (info)->flags |= SEC_EXCLUDE; 3541 else 3542 { 3543 frvfdpic_gotfixup_section (info)->contents = 3544 (bfd_byte *) bfd_zalloc (dynobj, 3545 frvfdpic_gotfixup_section (info)->_raw_size); 3546 if (frvfdpic_gotfixup_section (info)->contents == NULL) 3547 return FALSE; 3548 } 3549 3550 if (elf_hash_table (info)->dynamic_sections_created) 3551 { 3552 frvfdpic_pltrel_section (info)->_raw_size = 3553 gpinfo.g.lzplt / 8 * get_elf_backend_data (output_bfd)->s->sizeof_rel; 3554 if (frvfdpic_pltrel_section (info)->_raw_size == 0) 3555 frvfdpic_pltrel_section (info)->flags |= SEC_EXCLUDE; 3556 else 3557 { 3558 frvfdpic_pltrel_section (info)->contents = 3559 (bfd_byte *) bfd_zalloc (dynobj, 3560 frvfdpic_pltrel_section (info) 3561 ->_raw_size); 3562 if (frvfdpic_pltrel_section (info)->contents == NULL) 3563 return FALSE; 3564 } 3565 } 3566 3567 /* Add 4 bytes for every block of at most 65535 lazy PLT entries, 3568 such that there's room for the additional instruction needed to 3569 call the resolver. Since _frvfdpic_assign_got_entries didn't 3570 account for them, our block size is 4 bytes smaller than the real 3571 block size. */ 3572 if (elf_hash_table (info)->dynamic_sections_created) 3573 { 3574 frvfdpic_plt_section (info)->_raw_size = gpinfo.g.lzplt 3575 + ((gpinfo.g.lzplt + (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) - 8) 3576 / (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) * 4); 3577 } 3578 3579 /* Reset it, such that _frvfdpic_assign_plt_entries() can use it to 3580 actually assign lazy PLT entries addresses. */ 3581 gpinfo.g.lzplt = 0; 3582 3583 /* Save information that we're going to need to generate GOT and PLT 3584 entries. */ 3585 frvfdpic_got_initial_offset (info) = -gpinfo.gothilo.min; 3586 3587 if (get_elf_backend_data (output_bfd)->want_got_sym) 3588 elf_hash_table (info)->hgot->root.u.def.value 3589 += frvfdpic_got_initial_offset (info); 3590 3591 if (elf_hash_table (info)->dynamic_sections_created) 3592 frvfdpic_plt_initial_offset (info) = 3593 frvfdpic_plt_section (info)->_raw_size; 3594 3595 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_plt_entries, 3596 &gpinfo); 3597 3598 /* Allocate the PLT section contents only after 3599 _frvfdpic_assign_plt_entries has a chance to add the size of the 3600 non-lazy PLT entries. */ 3601 if (elf_hash_table (info)->dynamic_sections_created) 3602 { 3603 if (frvfdpic_plt_section (info)->_raw_size == 0) 3604 frvfdpic_plt_section (info)->flags |= SEC_EXCLUDE; 3605 else 3606 { 3607 frvfdpic_plt_section (info)->contents = 3608 (bfd_byte *) bfd_zalloc (dynobj, 3609 frvfdpic_plt_section (info)->_raw_size); 3610 if (frvfdpic_plt_section (info)->contents == NULL) 3611 return FALSE; 3612 } 3613 } 3614 3615 if (elf_hash_table (info)->dynamic_sections_created) 3616 { 3617 if (frvfdpic_got_section (info)->_raw_size) 3618 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)) 3619 return FALSE; 3620 3621 if (frvfdpic_pltrel_section (info)->_raw_size) 3622 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) 3623 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_REL) 3624 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) 3625 return FALSE; 3626 3627 if (frvfdpic_gotrel_section (info)->_raw_size) 3628 if (!_bfd_elf_add_dynamic_entry (info, DT_REL, 0) 3629 || !_bfd_elf_add_dynamic_entry (info, DT_RELSZ, 0) 3630 || !_bfd_elf_add_dynamic_entry (info, DT_RELENT, 3631 sizeof (Elf32_External_Rel))) 3632 return FALSE; 3633 } 3634 3635 return TRUE; 3636 } 3637 3638 static bfd_boolean 3639 elf32_frvfdpic_always_size_sections (bfd *output_bfd, 3640 struct bfd_link_info *info) 3641 { 3642 if (!info->relocatable) 3643 { 3644 struct elf_link_hash_entry *h; 3645 asection *sec; 3646 3647 /* Force a PT_GNU_STACK segment to be created. */ 3648 if (! elf_tdata (output_bfd)->stack_flags) 3649 elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | PF_X; 3650 3651 /* Define __stacksize if it's not defined yet. */ 3652 h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize", 3653 FALSE, FALSE, FALSE); 3654 if (! h || h->root.type != bfd_link_hash_defined 3655 || h->type != STT_OBJECT 3656 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) 3657 { 3658 struct bfd_link_hash_entry *bh = NULL; 3659 3660 if (!(_bfd_generic_link_add_one_symbol 3661 (info, output_bfd, "__stacksize", 3662 BSF_GLOBAL, bfd_abs_section_ptr, DEFAULT_STACK_SIZE, 3663 (const char *) NULL, FALSE, 3664 get_elf_backend_data (output_bfd)->collect, &bh))) 3665 return FALSE; 3666 3667 h = (struct elf_link_hash_entry *) bh; 3668 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; 3669 h->type = STT_OBJECT; 3670 } 3671 3672 /* Create a stack section, and set its alignment. */ 3673 sec = bfd_make_section (output_bfd, ".stack"); 3674 3675 if (sec == NULL 3676 || ! bfd_set_section_alignment (output_bfd, sec, 3)) 3677 return FALSE; 3678 } 3679 3680 return TRUE; 3681 } 3682 3683 static bfd_boolean 3684 elf32_frvfdpic_modify_segment_map (bfd *output_bfd, 3685 struct bfd_link_info *info) 3686 { 3687 struct elf_segment_map *m; 3688 3689 /* objcopy and strip preserve what's already there using 3690 elf32_frvfdpic_copy_private_bfd_data (). */ 3691 if (! info) 3692 return TRUE; 3693 3694 for (m = elf_tdata (output_bfd)->segment_map; m != NULL; m = m->next) 3695 if (m->p_type == PT_GNU_STACK) 3696 break; 3697 3698 if (m) 3699 { 3700 asection *sec = bfd_get_section_by_name (output_bfd, ".stack"); 3701 struct elf_link_hash_entry *h; 3702 3703 if (sec) 3704 { 3705 /* Obtain the pointer to the __stacksize symbol. */ 3706 h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize", 3707 FALSE, FALSE, FALSE); 3708 while (h->root.type == bfd_link_hash_indirect 3709 || h->root.type == bfd_link_hash_warning) 3710 h = (struct elf_link_hash_entry *)h->root.u.i.link; 3711 BFD_ASSERT (h->root.type == bfd_link_hash_defined); 3712 3713 /* Set the section size from the symbol value. We 3714 intentionally ignore the symbol section. */ 3715 if (h->root.type == bfd_link_hash_defined) 3716 sec->_raw_size = h->root.u.def.value; 3717 else 3718 sec->_raw_size = DEFAULT_STACK_SIZE; 3719 3720 /* Add the stack section to the PT_GNU_STACK segment, 3721 such that its size and alignment requirements make it 3722 to the segment. */ 3723 m->sections[m->count] = sec; 3724 m->count++; 3725 } 3726 } 3727 3728 return TRUE; 3729 } 3730 3731 /* Fill in code and data in dynamic sections. */ 3732 3733 static bfd_boolean 3734 elf32_frv_finish_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 3735 struct bfd_link_info *info ATTRIBUTE_UNUSED) 3736 { 3737 /* Nothing to be done for non-FDPIC. */ 3738 return TRUE; 3739 } 3740 3741 static bfd_boolean 3742 elf32_frvfdpic_finish_dynamic_sections (bfd *output_bfd, 3743 struct bfd_link_info *info) 3744 { 3745 bfd *dynobj; 3746 asection *sdyn; 3747 3748 dynobj = elf_hash_table (info)->dynobj; 3749 3750 if (frvfdpic_got_section (info)) 3751 { 3752 BFD_ASSERT (frvfdpic_gotrel_section (info)->_raw_size 3753 == (frvfdpic_gotrel_section (info)->reloc_count 3754 * sizeof (Elf32_External_Rel))); 3755 3756 if (frvfdpic_gotfixup_section (info)) 3757 { 3758 struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot; 3759 bfd_vma got_value = hgot->root.u.def.value 3760 + hgot->root.u.def.section->output_section->vma 3761 + hgot->root.u.def.section->output_offset; 3762 3763 _frvfdpic_add_rofixup (output_bfd, frvfdpic_gotfixup_section (info), 3764 got_value, 0); 3765 3766 if (frvfdpic_gotfixup_section (info)->_raw_size 3767 != (frvfdpic_gotfixup_section (info)->reloc_count * 4)) 3768 { 3769 (*_bfd_error_handler) 3770 ("LINKER BUG: .rofixup section size mismatch"); 3771 return FALSE; 3772 } 3773 } 3774 } 3775 if (elf_hash_table (info)->dynamic_sections_created) 3776 { 3777 BFD_ASSERT (frvfdpic_pltrel_section (info)->_raw_size 3778 == (frvfdpic_pltrel_section (info)->reloc_count 3779 * sizeof (Elf32_External_Rel))); 3780 } 3781 3782 sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); 3783 3784 if (elf_hash_table (info)->dynamic_sections_created) 3785 { 3786 Elf32_External_Dyn * dyncon; 3787 Elf32_External_Dyn * dynconend; 3788 3789 BFD_ASSERT (sdyn != NULL); 3790 3791 dyncon = (Elf32_External_Dyn *) sdyn->contents; 3792 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); 3793 3794 for (; dyncon < dynconend; dyncon++) 3795 { 3796 Elf_Internal_Dyn dyn; 3797 3798 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 3799 3800 switch (dyn.d_tag) 3801 { 3802 default: 3803 break; 3804 3805 case DT_PLTGOT: 3806 dyn.d_un.d_ptr = frvfdpic_got_section (info)->output_section->vma 3807 + frvfdpic_got_section (info)->output_offset 3808 + frvfdpic_got_initial_offset (info); 3809 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3810 break; 3811 3812 case DT_JMPREL: 3813 dyn.d_un.d_ptr = frvfdpic_pltrel_section (info) 3814 ->output_section->vma 3815 + frvfdpic_pltrel_section (info)->output_offset; 3816 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3817 break; 3818 3819 case DT_PLTRELSZ: 3820 if (frvfdpic_pltrel_section (info)->_cooked_size != 0) 3821 dyn.d_un.d_val = frvfdpic_pltrel_section (info)->_cooked_size; 3822 else 3823 dyn.d_un.d_val = frvfdpic_pltrel_section (info)->_raw_size; 3824 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3825 break; 3826 } 3827 } 3828 } 3829 3830 return TRUE; 3831 } 3832 3833 /* Adjust a symbol defined by a dynamic object and referenced by a 3834 regular object. */ 3835 3836 static bfd_boolean 3837 elf32_frvfdpic_adjust_dynamic_symbol 3838 (struct bfd_link_info *info ATTRIBUTE_UNUSED, 3839 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) 3840 { 3841 bfd * dynobj; 3842 3843 dynobj = elf_hash_table (info)->dynobj; 3844 3845 /* Make sure we know what is going on here. */ 3846 BFD_ASSERT (dynobj != NULL 3847 && (h->weakdef != NULL 3848 || ((h->elf_link_hash_flags 3849 & ELF_LINK_HASH_DEF_DYNAMIC) != 0 3850 && (h->elf_link_hash_flags 3851 & ELF_LINK_HASH_REF_REGULAR) != 0 3852 && (h->elf_link_hash_flags 3853 & ELF_LINK_HASH_DEF_REGULAR) == 0))); 3854 3855 /* If this is a weak symbol, and there is a real definition, the 3856 processor independent code will have arranged for us to see the 3857 real definition first, and we can just use the same value. */ 3858 if (h->weakdef != NULL) 3859 { 3860 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined 3861 || h->weakdef->root.type == bfd_link_hash_defweak); 3862 h->root.u.def.section = h->weakdef->root.u.def.section; 3863 h->root.u.def.value = h->weakdef->root.u.def.value; 3864 } 3865 3866 return TRUE; 3867 } 3868 3869 /* Perform any actions needed for dynamic symbols. */ 3870 3871 static bfd_boolean 3872 elf32_frvfdpic_finish_dynamic_symbol 3873 (bfd *output_bfd ATTRIBUTE_UNUSED, 3874 struct bfd_link_info *info ATTRIBUTE_UNUSED, 3875 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED, 3876 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) 3877 { 3878 return TRUE; 3879 } 3880 3881 /* Decide whether to attempt to turn absptr or lsda encodings in 3882 shared libraries into pcrel within the given input section. */ 3883 3884 static bfd_boolean 3885 frvfdpic_elf_use_relative_eh_frame 3886 (bfd *input_bfd ATTRIBUTE_UNUSED, 3887 struct bfd_link_info *info ATTRIBUTE_UNUSED, 3888 asection *eh_frame_section ATTRIBUTE_UNUSED) 3889 { 3890 /* We can't use PC-relative encodings in FDPIC binaries, in general. */ 3891 return FALSE; 3892 } 3893 3894 /* Adjust the contents of an eh_frame_hdr section before they're output. */ 3895 3896 static bfd_byte 3897 frvfdpic_elf_encode_eh_address (bfd *abfd, 3898 struct bfd_link_info *info, 3899 asection *osec, bfd_vma offset, 3900 asection *loc_sec, bfd_vma loc_offset, 3901 bfd_vma *encoded) 3902 { 3903 struct elf_link_hash_entry *h; 3904 3905 h = elf_hash_table (info)->hgot; 3906 BFD_ASSERT (h && h->root.type == bfd_link_hash_defined); 3907 3908 if (! h || (_frvfdpic_osec_to_segment (abfd, osec) 3909 == _frvfdpic_osec_to_segment (abfd, loc_sec->output_section))) 3910 return _bfd_elf_encode_eh_address (abfd, info, osec, offset, 3911 loc_sec, loc_offset, encoded); 3912 3913 BFD_ASSERT (_frvfdpic_osec_to_segment (abfd, osec) 3914 == (_frvfdpic_osec_to_segment 3915 (abfd, h->root.u.def.section->output_section))); 3916 3917 *encoded = osec->vma + offset 3918 - (h->root.u.def.value 3919 + h->root.u.def.section->output_section->vma 3920 + h->root.u.def.section->output_offset); 3921 3922 return DW_EH_PE_datarel | DW_EH_PE_sdata4; 3923 } 3924 3925 /* Look through the relocs for a section during the first phase. 3926 3927 Besides handling virtual table relocs for gc, we have to deal with 3928 all sorts of PIC-related relocations. We describe below the 3929 general plan on how to handle such relocations, even though we only 3930 collect information at this point, storing them in hash tables for 3931 perusal of later passes. 3932 3933 32 relocations are propagated to the linker output when creating 3934 position-independent output. LO16 and HI16 relocations are not 3935 supposed to be encountered in this case. 3936 3937 LABEL16 should always be resolvable by the linker, since it's only 3938 used by branches. 3939 3940 LABEL24, on the other hand, is used by calls. If it turns out that 3941 the target of a call is a dynamic symbol, a PLT entry must be 3942 created for it, which triggers the creation of a private function 3943 descriptor and, unless lazy binding is disabled, a lazy PLT entry. 3944 3945 GPREL relocations require the referenced symbol to be in the same 3946 segment as _gp, but this can only be checked later. 3947 3948 All GOT, GOTOFF and FUNCDESC relocations require a .got section to 3949 exist. LABEL24 might as well, since it may require a PLT entry, 3950 that will require a got. 3951 3952 Non-FUNCDESC GOT relocations require a GOT entry to be created 3953 regardless of whether the symbol is dynamic. However, since a 3954 global symbol that turns out to not be exported may have the same 3955 address of a non-dynamic symbol, we don't assign GOT entries at 3956 this point, such that we can share them in this case. A relocation 3957 for the GOT entry always has to be created, be it to offset a 3958 private symbol by the section load address, be it to get the symbol 3959 resolved dynamically. 3960 3961 FUNCDESC GOT relocations require a GOT entry to be created, and 3962 handled as if a FUNCDESC relocation was applied to the GOT entry in 3963 an object file. 3964 3965 FUNCDESC relocations referencing a symbol that turns out to NOT be 3966 dynamic cause a private function descriptor to be created. The 3967 FUNCDESC relocation then decays to a 32 relocation that points at 3968 the private descriptor. If the symbol is dynamic, the FUNCDESC 3969 relocation is propagated to the linker output, such that the 3970 dynamic linker creates the canonical descriptor, pointing to the 3971 dynamically-resolved definition of the function. 3972 3973 Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic 3974 symbols that are assigned to the same segment as the GOT, but we 3975 can only check this later, after we know the complete set of 3976 symbols defined and/or exported. 3977 3978 FUNCDESC GOTOFF relocations require a function descriptor to be 3979 created and, unless lazy binding is disabled or the symbol is not 3980 dynamic, a lazy PLT entry. Since we can't tell at this point 3981 whether a symbol is going to be dynamic, we have to decide later 3982 whether to create a lazy PLT entry or bind the descriptor directly 3983 to the private function. 3984 3985 FUNCDESC_VALUE relocations are not supposed to be present in object 3986 files, but they may very well be simply propagated to the linker 3987 output, since they have no side effect. 3988 3989 3990 A function descriptor always requires a FUNCDESC_VALUE relocation. 3991 Whether it's in .plt.rel or not depends on whether lazy binding is 3992 enabled and on whether the referenced symbol is dynamic. 3993 3994 The existence of a lazy PLT requires the resolverStub lazy PLT 3995 entry to be present. 3996 3997 3998 As for assignment of GOT, PLT and lazy PLT entries, and private 3999 descriptors, we might do them all sequentially, but we can do 4000 better than that. For example, we can place GOT entries and 4001 private function descriptors referenced using 12-bit operands 4002 closer to the PIC register value, such that these relocations don't 4003 overflow. Those that are only referenced with LO16 relocations 4004 could come next, but we may as well place PLT-required function 4005 descriptors in the 12-bit range to make them shorter. Symbols 4006 referenced with LO16/HI16 may come next, but we may place 4007 additional function descriptors in the 16-bit range if we can 4008 reliably tell that we've already placed entries that are ever 4009 referenced with only LO16. PLT entries are therefore generated as 4010 small as possible, while not introducing relocation overflows in 4011 GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be 4012 generated before or after PLT entries, but not intermingled with 4013 them, such that we can have more lazy PLT entries in range for a 4014 branch to the resolverStub. The resolverStub should be emitted at 4015 the most distant location from the first lazy PLT entry such that 4016 it's still in range for a branch, or closer, if there isn't a need 4017 for so many lazy PLT entries. Additional lazy PLT entries may be 4018 emitted after the resolverStub, as long as branches are still in 4019 range. If the branch goes out of range, longer lazy PLT entries 4020 are emitted. 4021 4022 We could further optimize PLT and lazy PLT entries by giving them 4023 priority in assignment to closer-to-gr17 locations depending on the 4024 number of occurrences of references to them (assuming a function 4025 that's called more often is more important for performance, so its 4026 PLT entry should be faster), or taking hints from the compiler. 4027 Given infinite time and money... :-) */ 4028 4029 static bfd_boolean 4030 elf32_frv_check_relocs (abfd, info, sec, relocs) 4031 bfd *abfd; 4032 struct bfd_link_info *info; 4033 asection *sec; 4034 const Elf_Internal_Rela *relocs; 4035 { 4036 Elf_Internal_Shdr *symtab_hdr; 4037 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; 4038 const Elf_Internal_Rela *rel; 4039 const Elf_Internal_Rela *rel_end; 4040 bfd *dynobj; 4041 struct frvfdpic_relocs_info *picrel; 4042 4043 if (info->relocatable) 4044 return TRUE; 4045 4046 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 4047 sym_hashes = elf_sym_hashes (abfd); 4048 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym); 4049 if (!elf_bad_symtab (abfd)) 4050 sym_hashes_end -= symtab_hdr->sh_info; 4051 4052 dynobj = elf_hash_table (info)->dynobj; 4053 rel_end = relocs + sec->reloc_count; 4054 for (rel = relocs; rel < rel_end; rel++) 4055 { 4056 struct elf_link_hash_entry *h; 4057 unsigned long r_symndx; 4058 4059 r_symndx = ELF32_R_SYM (rel->r_info); 4060 if (r_symndx < symtab_hdr->sh_info) 4061 h = NULL; 4062 else 4063 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 4064 4065 switch (ELF32_R_TYPE (rel->r_info)) 4066 { 4067 case R_FRV_GOT12: 4068 case R_FRV_GOTHI: 4069 case R_FRV_GOTLO: 4070 case R_FRV_FUNCDESC_GOT12: 4071 case R_FRV_FUNCDESC_GOTHI: 4072 case R_FRV_FUNCDESC_GOTLO: 4073 case R_FRV_GOTOFF12: 4074 case R_FRV_GOTOFFHI: 4075 case R_FRV_GOTOFFLO: 4076 case R_FRV_FUNCDESC_GOTOFF12: 4077 case R_FRV_FUNCDESC_GOTOFFHI: 4078 case R_FRV_FUNCDESC_GOTOFFLO: 4079 case R_FRV_FUNCDESC: 4080 case R_FRV_FUNCDESC_VALUE: 4081 if (! IS_FDPIC (abfd)) 4082 goto bad_reloc; 4083 /* Fall through. */ 4084 case R_FRV_GPREL12: 4085 case R_FRV_GPRELU12: 4086 case R_FRV_GPRELHI: 4087 case R_FRV_GPRELLO: 4088 case R_FRV_LABEL24: 4089 case R_FRV_32: 4090 if (! dynobj) 4091 { 4092 elf_hash_table (info)->dynobj = dynobj = abfd; 4093 if (! _frv_create_got_section (abfd, info)) 4094 return FALSE; 4095 } 4096 if (! IS_FDPIC (abfd)) 4097 { 4098 picrel = NULL; 4099 break; 4100 } 4101 if (h != NULL) 4102 { 4103 if (h->dynindx == -1) 4104 switch (ELF_ST_VISIBILITY (h->other)) 4105 { 4106 case STV_INTERNAL: 4107 case STV_HIDDEN: 4108 break; 4109 default: 4110 bfd_elf_link_record_dynamic_symbol (info, h); 4111 break; 4112 } 4113 picrel 4114 = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info (info), 4115 abfd, h, 4116 rel->r_addend, INSERT); 4117 } 4118 else 4119 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info 4120 (info), abfd, r_symndx, 4121 rel->r_addend, INSERT); 4122 if (! picrel) 4123 return FALSE; 4124 break; 4125 4126 default: 4127 picrel = NULL; 4128 break; 4129 } 4130 4131 switch (ELF32_R_TYPE (rel->r_info)) 4132 { 4133 case R_FRV_LABEL24: 4134 if (IS_FDPIC (abfd)) 4135 picrel->call = 1; 4136 break; 4137 4138 case R_FRV_FUNCDESC_VALUE: 4139 picrel->relocsfdv++; 4140 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) 4141 picrel->relocs32--; 4142 /* Fall through. */ 4143 4144 case R_FRV_32: 4145 if (! IS_FDPIC (abfd)) 4146 break; 4147 4148 picrel->sym = 1; 4149 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) 4150 picrel->relocs32++; 4151 break; 4152 4153 case R_FRV_GOT12: 4154 picrel->got12 = 1; 4155 break; 4156 4157 case R_FRV_GOTHI: 4158 case R_FRV_GOTLO: 4159 picrel->gothilo = 1; 4160 break; 4161 4162 case R_FRV_FUNCDESC_GOT12: 4163 picrel->fdgot12 = 1; 4164 break; 4165 4166 case R_FRV_FUNCDESC_GOTHI: 4167 case R_FRV_FUNCDESC_GOTLO: 4168 picrel->fdgothilo = 1; 4169 break; 4170 4171 case R_FRV_GOTOFF12: 4172 case R_FRV_GOTOFFHI: 4173 case R_FRV_GOTOFFLO: 4174 picrel->gotoff = 1; 4175 break; 4176 4177 case R_FRV_FUNCDESC_GOTOFF12: 4178 picrel->fdgoff12 = 1; 4179 break; 4180 4181 case R_FRV_FUNCDESC_GOTOFFHI: 4182 case R_FRV_FUNCDESC_GOTOFFLO: 4183 picrel->fdgoffhilo = 1; 4184 break; 4185 4186 case R_FRV_FUNCDESC: 4187 picrel->fd = 1; 4188 picrel->relocsfd++; 4189 break; 4190 4191 /* This relocation describes the C++ object vtable hierarchy. 4192 Reconstruct it for later use during GC. */ 4193 case R_FRV_GNU_VTINHERIT: 4194 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 4195 return FALSE; 4196 break; 4197 4198 /* This relocation describes which C++ vtable entries are actually 4199 used. Record for later use during GC. */ 4200 case R_FRV_GNU_VTENTRY: 4201 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 4202 return FALSE; 4203 break; 4204 4205 case R_FRV_LABEL16: 4206 case R_FRV_LO16: 4207 case R_FRV_HI16: 4208 case R_FRV_GPREL12: 4209 case R_FRV_GPRELU12: 4210 case R_FRV_GPREL32: 4211 case R_FRV_GPRELHI: 4212 case R_FRV_GPRELLO: 4213 break; 4214 4215 default: 4216 bad_reloc: 4217 (*_bfd_error_handler) 4218 (_("%s: unsupported relocation type %i"), 4219 bfd_archive_filename (abfd), ELF32_R_TYPE (rel->r_info)); 4220 return FALSE; 4221 } 4222 } 4223 4224 return TRUE; 4225 } 4226 4227 4228 /* Return the machine subcode from the ELF e_flags header. */ 4229 4230 static int 4231 elf32_frv_machine (abfd) 4232 bfd *abfd; 4233 { 4234 switch (elf_elfheader (abfd)->e_flags & EF_FRV_CPU_MASK) 4235 { 4236 default: break; 4237 case EF_FRV_CPU_FR550: return bfd_mach_fr550; 4238 case EF_FRV_CPU_FR500: return bfd_mach_fr500; 4239 case EF_FRV_CPU_FR400: return bfd_mach_fr400; 4240 case EF_FRV_CPU_FR300: return bfd_mach_fr300; 4241 case EF_FRV_CPU_SIMPLE: return bfd_mach_frvsimple; 4242 case EF_FRV_CPU_TOMCAT: return bfd_mach_frvtomcat; 4243 } 4244 4245 return bfd_mach_frv; 4246 } 4247 4248 /* Set the right machine number for a FRV ELF file. */ 4249 4250 static bfd_boolean 4251 elf32_frv_object_p (abfd) 4252 bfd *abfd; 4253 { 4254 bfd_default_set_arch_mach (abfd, bfd_arch_frv, elf32_frv_machine (abfd)); 4255 return (((elf_elfheader (abfd)->e_flags & EF_FRV_FDPIC) != 0) 4256 == (IS_FDPIC (abfd))); 4257 } 4258 4259 /* Function to set the ELF flag bits. */ 4260 4261 static bfd_boolean 4262 frv_elf_set_private_flags (abfd, flags) 4263 bfd *abfd; 4264 flagword flags; 4265 { 4266 elf_elfheader (abfd)->e_flags = flags; 4267 elf_flags_init (abfd) = TRUE; 4268 return TRUE; 4269 } 4270 4271 /* Copy backend specific data from one object module to another. */ 4272 4273 static bfd_boolean 4274 frv_elf_copy_private_bfd_data (ibfd, obfd) 4275 bfd *ibfd; 4276 bfd *obfd; 4277 { 4278 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour 4279 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 4280 return TRUE; 4281 4282 BFD_ASSERT (!elf_flags_init (obfd) 4283 || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags); 4284 4285 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; 4286 elf_flags_init (obfd) = TRUE; 4287 return TRUE; 4288 } 4289 4290 static bfd_boolean 4291 elf32_frvfdpic_copy_private_bfd_data (bfd *ibfd, bfd *obfd) 4292 { 4293 unsigned i; 4294 4295 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour 4296 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 4297 return TRUE; 4298 4299 if (! frv_elf_copy_private_bfd_data (ibfd, obfd)) 4300 return FALSE; 4301 4302 if (! elf_tdata (ibfd) || ! elf_tdata (ibfd)->phdr 4303 || ! elf_tdata (obfd) || ! elf_tdata (obfd)->phdr) 4304 return TRUE; 4305 4306 /* Copy the stack size. */ 4307 for (i = 0; i < elf_elfheader (ibfd)->e_phnum; i++) 4308 if (elf_tdata (ibfd)->phdr[i].p_type == PT_GNU_STACK) 4309 { 4310 Elf_Internal_Phdr *iphdr = &elf_tdata (ibfd)->phdr[i]; 4311 4312 for (i = 0; i < elf_elfheader (obfd)->e_phnum; i++) 4313 if (elf_tdata (obfd)->phdr[i].p_type == PT_GNU_STACK) 4314 { 4315 memcpy (&elf_tdata (obfd)->phdr[i], iphdr, sizeof (*iphdr)); 4316 4317 /* Rewrite the phdrs, since we're only called after they 4318 were first written. */ 4319 if (bfd_seek (obfd, (bfd_signed_vma) get_elf_backend_data (obfd) 4320 ->s->sizeof_ehdr, SEEK_SET) != 0 4321 || get_elf_backend_data (obfd)->s 4322 ->write_out_phdrs (obfd, elf_tdata (obfd)->phdr, 4323 elf_elfheader (obfd)->e_phnum) != 0) 4324 return FALSE; 4325 break; 4326 } 4327 4328 break; 4329 } 4330 4331 return TRUE; 4332 } 4333 4334 /* Merge backend specific data from an object file to the output 4335 object file when linking. */ 4336 4337 static bfd_boolean 4338 frv_elf_merge_private_bfd_data (ibfd, obfd) 4339 bfd *ibfd; 4340 bfd *obfd; 4341 { 4342 flagword old_flags, old_partial; 4343 flagword new_flags, new_partial; 4344 bfd_boolean error = FALSE; 4345 char new_opt[80]; 4346 char old_opt[80]; 4347 4348 new_opt[0] = old_opt[0] = '\0'; 4349 new_flags = elf_elfheader (ibfd)->e_flags; 4350 old_flags = elf_elfheader (obfd)->e_flags; 4351 4352 if (new_flags & EF_FRV_FDPIC) 4353 new_flags &= ~EF_FRV_PIC; 4354 4355 #ifdef DEBUG 4356 (*_bfd_error_handler) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s", 4357 old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no", 4358 bfd_get_filename (ibfd)); 4359 #endif 4360 4361 if (!elf_flags_init (obfd)) /* First call, no flags set. */ 4362 { 4363 elf_flags_init (obfd) = TRUE; 4364 old_flags = new_flags; 4365 } 4366 4367 else if (new_flags == old_flags) /* Compatible flags are ok. */ 4368 ; 4369 4370 else /* Possibly incompatible flags. */ 4371 { 4372 /* Warn if different # of gprs are used. Note, 0 means nothing is 4373 said about the size of gprs. */ 4374 new_partial = (new_flags & EF_FRV_GPR_MASK); 4375 old_partial = (old_flags & EF_FRV_GPR_MASK); 4376 if (new_partial == old_partial) 4377 ; 4378 4379 else if (new_partial == 0) 4380 ; 4381 4382 else if (old_partial == 0) 4383 old_flags |= new_partial; 4384 4385 else 4386 { 4387 switch (new_partial) 4388 { 4389 default: strcat (new_opt, " -mgpr-??"); break; 4390 case EF_FRV_GPR_32: strcat (new_opt, " -mgpr-32"); break; 4391 case EF_FRV_GPR_64: strcat (new_opt, " -mgpr-64"); break; 4392 } 4393 4394 switch (old_partial) 4395 { 4396 default: strcat (old_opt, " -mgpr-??"); break; 4397 case EF_FRV_GPR_32: strcat (old_opt, " -mgpr-32"); break; 4398 case EF_FRV_GPR_64: strcat (old_opt, " -mgpr-64"); break; 4399 } 4400 } 4401 4402 /* Warn if different # of fprs are used. Note, 0 means nothing is 4403 said about the size of fprs. */ 4404 new_partial = (new_flags & EF_FRV_FPR_MASK); 4405 old_partial = (old_flags & EF_FRV_FPR_MASK); 4406 if (new_partial == old_partial) 4407 ; 4408 4409 else if (new_partial == 0) 4410 ; 4411 4412 else if (old_partial == 0) 4413 old_flags |= new_partial; 4414 4415 else 4416 { 4417 switch (new_partial) 4418 { 4419 default: strcat (new_opt, " -mfpr-?"); break; 4420 case EF_FRV_FPR_32: strcat (new_opt, " -mfpr-32"); break; 4421 case EF_FRV_FPR_64: strcat (new_opt, " -mfpr-64"); break; 4422 case EF_FRV_FPR_NONE: strcat (new_opt, " -msoft-float"); break; 4423 } 4424 4425 switch (old_partial) 4426 { 4427 default: strcat (old_opt, " -mfpr-?"); break; 4428 case EF_FRV_FPR_32: strcat (old_opt, " -mfpr-32"); break; 4429 case EF_FRV_FPR_64: strcat (old_opt, " -mfpr-64"); break; 4430 case EF_FRV_FPR_NONE: strcat (old_opt, " -msoft-float"); break; 4431 } 4432 } 4433 4434 /* Warn if different dword support was used. Note, 0 means nothing is 4435 said about the dword support. */ 4436 new_partial = (new_flags & EF_FRV_DWORD_MASK); 4437 old_partial = (old_flags & EF_FRV_DWORD_MASK); 4438 if (new_partial == old_partial) 4439 ; 4440 4441 else if (new_partial == 0) 4442 ; 4443 4444 else if (old_partial == 0) 4445 old_flags |= new_partial; 4446 4447 else 4448 { 4449 switch (new_partial) 4450 { 4451 default: strcat (new_opt, " -mdword-?"); break; 4452 case EF_FRV_DWORD_YES: strcat (new_opt, " -mdword"); break; 4453 case EF_FRV_DWORD_NO: strcat (new_opt, " -mno-dword"); break; 4454 } 4455 4456 switch (old_partial) 4457 { 4458 default: strcat (old_opt, " -mdword-?"); break; 4459 case EF_FRV_DWORD_YES: strcat (old_opt, " -mdword"); break; 4460 case EF_FRV_DWORD_NO: strcat (old_opt, " -mno-dword"); break; 4461 } 4462 } 4463 4464 /* Or in flags that accumulate (ie, if one module uses it, mark that the 4465 feature is used. */ 4466 old_flags |= new_flags & (EF_FRV_DOUBLE 4467 | EF_FRV_MEDIA 4468 | EF_FRV_MULADD 4469 | EF_FRV_NON_PIC_RELOCS); 4470 4471 /* If any module was compiled without -G0, clear the G0 bit. */ 4472 old_flags = ((old_flags & ~ EF_FRV_G0) 4473 | (old_flags & new_flags & EF_FRV_G0)); 4474 4475 /* If any module was compiled without -mnopack, clear the mnopack bit. */ 4476 old_flags = ((old_flags & ~ EF_FRV_NOPACK) 4477 | (old_flags & new_flags & EF_FRV_NOPACK)); 4478 4479 /* We don't have to do anything if the pic flags are the same, or the new 4480 module(s) were compiled with -mlibrary-pic. */ 4481 new_partial = (new_flags & EF_FRV_PIC_FLAGS); 4482 old_partial = (old_flags & EF_FRV_PIC_FLAGS); 4483 if ((new_partial == old_partial) || ((new_partial & EF_FRV_LIBPIC) != 0)) 4484 ; 4485 4486 /* If the old module(s) were compiled with -mlibrary-pic, copy in the pic 4487 flags if any from the new module. */ 4488 else if ((old_partial & EF_FRV_LIBPIC) != 0) 4489 old_flags = (old_flags & ~ EF_FRV_PIC_FLAGS) | new_partial; 4490 4491 /* If we have mixtures of -fpic and -fPIC, or in both bits. */ 4492 else if (new_partial != 0 && old_partial != 0) 4493 old_flags |= new_partial; 4494 4495 /* One module was compiled for pic and the other was not, see if we have 4496 had any relocations that are not pic-safe. */ 4497 else 4498 { 4499 if ((old_flags & EF_FRV_NON_PIC_RELOCS) == 0) 4500 old_flags |= new_partial; 4501 else 4502 { 4503 old_flags &= ~ EF_FRV_PIC_FLAGS; 4504 #ifndef FRV_NO_PIC_ERROR 4505 error = TRUE; 4506 (*_bfd_error_handler) 4507 (_("%s: compiled with %s and linked with modules that use non-pic relocations"), 4508 bfd_get_filename (ibfd), 4509 (new_flags & EF_FRV_BIGPIC) ? "-fPIC" : "-fpic"); 4510 #endif 4511 } 4512 } 4513 4514 /* Warn if different cpu is used (allow a specific cpu to override 4515 the generic cpu). */ 4516 new_partial = (new_flags & EF_FRV_CPU_MASK); 4517 old_partial = (old_flags & EF_FRV_CPU_MASK); 4518 if (new_partial == old_partial) 4519 ; 4520 4521 else if (new_partial == EF_FRV_CPU_GENERIC) 4522 ; 4523 4524 else if (old_partial == EF_FRV_CPU_GENERIC) 4525 old_flags = (old_flags & ~EF_FRV_CPU_MASK) | new_partial; 4526 4527 else 4528 { 4529 switch (new_partial) 4530 { 4531 default: strcat (new_opt, " -mcpu=?"); break; 4532 case EF_FRV_CPU_GENERIC: strcat (new_opt, " -mcpu=frv"); break; 4533 case EF_FRV_CPU_SIMPLE: strcat (new_opt, " -mcpu=simple"); break; 4534 case EF_FRV_CPU_FR550: strcat (new_opt, " -mcpu=fr550"); break; 4535 case EF_FRV_CPU_FR500: strcat (new_opt, " -mcpu=fr500"); break; 4536 case EF_FRV_CPU_FR400: strcat (new_opt, " -mcpu=fr400"); break; 4537 case EF_FRV_CPU_FR300: strcat (new_opt, " -mcpu=fr300"); break; 4538 case EF_FRV_CPU_TOMCAT: strcat (new_opt, " -mcpu=tomcat"); break; 4539 } 4540 4541 switch (old_partial) 4542 { 4543 default: strcat (old_opt, " -mcpu=?"); break; 4544 case EF_FRV_CPU_GENERIC: strcat (old_opt, " -mcpu=frv"); break; 4545 case EF_FRV_CPU_SIMPLE: strcat (old_opt, " -mcpu=simple"); break; 4546 case EF_FRV_CPU_FR550: strcat (old_opt, " -mcpu=fr550"); break; 4547 case EF_FRV_CPU_FR500: strcat (old_opt, " -mcpu=fr500"); break; 4548 case EF_FRV_CPU_FR400: strcat (old_opt, " -mcpu=fr400"); break; 4549 case EF_FRV_CPU_FR300: strcat (old_opt, " -mcpu=fr300"); break; 4550 case EF_FRV_CPU_TOMCAT: strcat (old_opt, " -mcpu=tomcat"); break; 4551 } 4552 } 4553 4554 /* Print out any mismatches from above. */ 4555 if (new_opt[0]) 4556 { 4557 error = TRUE; 4558 (*_bfd_error_handler) 4559 (_("%s: compiled with %s and linked with modules compiled with %s"), 4560 bfd_get_filename (ibfd), new_opt, old_opt); 4561 } 4562 4563 /* Warn about any other mismatches */ 4564 new_partial = (new_flags & ~ EF_FRV_ALL_FLAGS); 4565 old_partial = (old_flags & ~ EF_FRV_ALL_FLAGS); 4566 if (new_partial != old_partial) 4567 { 4568 old_flags |= new_partial; 4569 error = TRUE; 4570 (*_bfd_error_handler) 4571 (_("%s: uses different unknown e_flags (0x%lx) fields than previous modules (0x%lx)"), 4572 bfd_get_filename (ibfd), (long)new_partial, (long)old_partial); 4573 } 4574 } 4575 4576 /* If the cpu is -mcpu=simple, then set the -mnopack bit. */ 4577 if ((old_flags & EF_FRV_CPU_MASK) == EF_FRV_CPU_SIMPLE) 4578 old_flags |= EF_FRV_NOPACK; 4579 4580 /* Update the old flags now with changes made above. */ 4581 old_partial = elf_elfheader (obfd)->e_flags & EF_FRV_CPU_MASK; 4582 elf_elfheader (obfd)->e_flags = old_flags; 4583 if (old_partial != (old_flags & EF_FRV_CPU_MASK)) 4584 bfd_default_set_arch_mach (obfd, bfd_arch_frv, elf32_frv_machine (obfd)); 4585 4586 if (((new_flags & EF_FRV_FDPIC) == 0) 4587 != (! IS_FDPIC (ibfd))) 4588 { 4589 error = TRUE; 4590 if (IS_FDPIC (obfd)) 4591 (*_bfd_error_handler) 4592 (_("%s: cannot link non-fdpic object file into fdpic executable"), 4593 bfd_get_filename (ibfd)); 4594 else 4595 (*_bfd_error_handler) 4596 (_("%s: cannot link fdpic object file into non-fdpic executable"), 4597 bfd_get_filename (ibfd)); 4598 } 4599 4600 if (error) 4601 bfd_set_error (bfd_error_bad_value); 4602 4603 return !error; 4604 } 4605 4606 4607 bfd_boolean 4608 frv_elf_print_private_bfd_data (abfd, ptr) 4609 bfd *abfd; 4610 PTR ptr; 4611 { 4612 FILE *file = (FILE *) ptr; 4613 flagword flags; 4614 4615 BFD_ASSERT (abfd != NULL && ptr != NULL); 4616 4617 /* Print normal ELF private data. */ 4618 _bfd_elf_print_private_bfd_data (abfd, ptr); 4619 4620 flags = elf_elfheader (abfd)->e_flags; 4621 fprintf (file, _("private flags = 0x%lx:"), (long)flags); 4622 4623 switch (flags & EF_FRV_CPU_MASK) 4624 { 4625 default: break; 4626 case EF_FRV_CPU_SIMPLE: fprintf (file, " -mcpu=simple"); break; 4627 case EF_FRV_CPU_FR550: fprintf (file, " -mcpu=fr550"); break; 4628 case EF_FRV_CPU_FR500: fprintf (file, " -mcpu=fr500"); break; 4629 case EF_FRV_CPU_FR400: fprintf (file, " -mcpu=fr400"); break; 4630 case EF_FRV_CPU_FR300: fprintf (file, " -mcpu=fr300"); break; 4631 case EF_FRV_CPU_TOMCAT: fprintf (file, " -mcpu=tomcat"); break; 4632 } 4633 4634 switch (flags & EF_FRV_GPR_MASK) 4635 { 4636 default: break; 4637 case EF_FRV_GPR_32: fprintf (file, " -mgpr-32"); break; 4638 case EF_FRV_GPR_64: fprintf (file, " -mgpr-64"); break; 4639 } 4640 4641 switch (flags & EF_FRV_FPR_MASK) 4642 { 4643 default: break; 4644 case EF_FRV_FPR_32: fprintf (file, " -mfpr-32"); break; 4645 case EF_FRV_FPR_64: fprintf (file, " -mfpr-64"); break; 4646 case EF_FRV_FPR_NONE: fprintf (file, " -msoft-float"); break; 4647 } 4648 4649 switch (flags & EF_FRV_DWORD_MASK) 4650 { 4651 default: break; 4652 case EF_FRV_DWORD_YES: fprintf (file, " -mdword"); break; 4653 case EF_FRV_DWORD_NO: fprintf (file, " -mno-dword"); break; 4654 } 4655 4656 if (flags & EF_FRV_DOUBLE) 4657 fprintf (file, " -mdouble"); 4658 4659 if (flags & EF_FRV_MEDIA) 4660 fprintf (file, " -mmedia"); 4661 4662 if (flags & EF_FRV_MULADD) 4663 fprintf (file, " -mmuladd"); 4664 4665 if (flags & EF_FRV_PIC) 4666 fprintf (file, " -fpic"); 4667 4668 if (flags & EF_FRV_BIGPIC) 4669 fprintf (file, " -fPIC"); 4670 4671 if (flags & EF_FRV_LIBPIC) 4672 fprintf (file, " -mlibrary-pic"); 4673 4674 if (flags & EF_FRV_FDPIC) 4675 fprintf (file, " -mfdpic"); 4676 4677 if (flags & EF_FRV_NON_PIC_RELOCS) 4678 fprintf (file, " non-pic relocations"); 4679 4680 if (flags & EF_FRV_G0) 4681 fprintf (file, " -G0"); 4682 4683 fputc ('\n', file); 4684 return TRUE; 4685 } 4686 4687 4688 #define ELF_ARCH bfd_arch_frv 4689 #define ELF_MACHINE_CODE EM_CYGNUS_FRV 4690 #define ELF_MAXPAGESIZE 0x1000 4691 4692 #define TARGET_BIG_SYM bfd_elf32_frv_vec 4693 #define TARGET_BIG_NAME "elf32-frv" 4694 4695 #define elf_info_to_howto frv_info_to_howto_rela 4696 #define elf_backend_relocate_section elf32_frv_relocate_section 4697 #define elf_backend_gc_mark_hook elf32_frv_gc_mark_hook 4698 #define elf_backend_gc_sweep_hook elf32_frv_gc_sweep_hook 4699 #define elf_backend_check_relocs elf32_frv_check_relocs 4700 #define elf_backend_object_p elf32_frv_object_p 4701 #define elf_backend_add_symbol_hook elf32_frv_add_symbol_hook 4702 4703 #define elf_backend_can_gc_sections 1 4704 #define elf_backend_rela_normal 1 4705 4706 #define bfd_elf32_bfd_reloc_type_lookup frv_reloc_type_lookup 4707 #define bfd_elf32_bfd_set_private_flags frv_elf_set_private_flags 4708 #define bfd_elf32_bfd_copy_private_bfd_data frv_elf_copy_private_bfd_data 4709 #define bfd_elf32_bfd_merge_private_bfd_data frv_elf_merge_private_bfd_data 4710 #define bfd_elf32_bfd_print_private_bfd_data frv_elf_print_private_bfd_data 4711 4712 #define elf_backend_want_got_sym 1 4713 #define elf_backend_got_header_size 0 4714 #define elf_backend_want_got_plt 0 4715 #define elf_backend_plt_readonly 1 4716 #define elf_backend_want_plt_sym 0 4717 #define elf_backend_plt_header_size 0 4718 4719 #define elf_backend_finish_dynamic_sections \ 4720 elf32_frv_finish_dynamic_sections 4721 4722 #include "elf32-target.h" 4723 4724 #undef ELF_MAXPAGESIZE 4725 #define ELF_MAXPAGESIZE 0x4000 4726 4727 #undef TARGET_BIG_SYM 4728 #define TARGET_BIG_SYM bfd_elf32_frvfdpic_vec 4729 #undef TARGET_BIG_NAME 4730 #define TARGET_BIG_NAME "elf32-frvfdpic" 4731 #undef elf32_bed 4732 #define elf32_bed elf32_frvfdpic_bed 4733 4734 #undef elf_info_to_howto_rel 4735 #define elf_info_to_howto_rel frvfdpic_info_to_howto_rel 4736 4737 #undef bfd_elf32_bfd_link_hash_table_create 4738 #define bfd_elf32_bfd_link_hash_table_create \ 4739 frvfdpic_elf_link_hash_table_create 4740 #undef elf_backend_always_size_sections 4741 #define elf_backend_always_size_sections \ 4742 elf32_frvfdpic_always_size_sections 4743 #undef elf_backend_modify_segment_map 4744 #define elf_backend_modify_segment_map \ 4745 elf32_frvfdpic_modify_segment_map 4746 #undef bfd_elf32_bfd_copy_private_bfd_data 4747 #define bfd_elf32_bfd_copy_private_bfd_data \ 4748 elf32_frvfdpic_copy_private_bfd_data 4749 4750 #undef elf_backend_create_dynamic_sections 4751 #define elf_backend_create_dynamic_sections \ 4752 elf32_frvfdpic_create_dynamic_sections 4753 #undef elf_backend_adjust_dynamic_symbol 4754 #define elf_backend_adjust_dynamic_symbol \ 4755 elf32_frvfdpic_adjust_dynamic_symbol 4756 #undef elf_backend_size_dynamic_sections 4757 #define elf_backend_size_dynamic_sections \ 4758 elf32_frvfdpic_size_dynamic_sections 4759 #undef elf_backend_finish_dynamic_symbol 4760 #define elf_backend_finish_dynamic_symbol \ 4761 elf32_frvfdpic_finish_dynamic_symbol 4762 #undef elf_backend_finish_dynamic_sections 4763 #define elf_backend_finish_dynamic_sections \ 4764 elf32_frvfdpic_finish_dynamic_sections 4765 4766 #undef elf_backend_can_make_relative_eh_frame 4767 #define elf_backend_can_make_relative_eh_frame \ 4768 frvfdpic_elf_use_relative_eh_frame 4769 #undef elf_backend_can_make_lsda_relative_eh_frame 4770 #define elf_backend_can_make_lsda_relative_eh_frame \ 4771 frvfdpic_elf_use_relative_eh_frame 4772 #undef elf_backend_encode_eh_address 4773 #define elf_backend_encode_eh_address \ 4774 frvfdpic_elf_encode_eh_address 4775 4776 #undef elf_backend_may_use_rel_p 4777 #define elf_backend_may_use_rel_p 1 4778 #undef elf_backend_may_use_rela_p 4779 #define elf_backend_may_use_rela_p 1 4780 /* We use REL for dynamic relocations only. */ 4781 #undef elf_backend_default_use_rela_p 4782 #define elf_backend_default_use_rela_p 1 4783 4784 #include "elf32-target.h" 4785