1/* MIPS-specific support for 32-bit ELF 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 3 2003, 2004, 2005 Free Software Foundation, Inc. 4 5 Most of the information added by Ian Lance Taylor, Cygnus Support, 6 <ian@cygnus.com>. 7 N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC. 8 <mark@codesourcery.com> 9 Traditional MIPS targets support added by Koundinya.K, Dansk Data 10 Elektronik & Operations Research Group. <kk@ddeorg.soft.net> 11 12This file is part of BFD, the Binary File Descriptor library. 13 14This program is free software; you can redistribute it and/or modify 15it under the terms of the GNU General Public License as published by 16the Free Software Foundation; either version 2 of the License, or 17(at your option) any later version. 18 19This program is distributed in the hope that it will be useful, 20but WITHOUT ANY WARRANTY; without even the implied warranty of 21MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22GNU General Public License for more details. 23 24You should have received a copy of the GNU General Public License 25along with this program; if not, write to the Free Software 26Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 27 28/* This file handles MIPS ELF targets. SGI Irix 5 uses a slightly 29 different MIPS ELF from other targets. This matters when linking. 30 This file supports both, switching at runtime. */ 31 32#include "bfd.h" 33#include "sysdep.h" 34#include "libbfd.h" 35#include "bfdlink.h" 36#include "genlink.h" 37#include "elf-bfd.h" 38#include "elfxx-mips.h" 39#include "elf/mips.h" 40#include "elf-vxworks.h" 41 42/* Get the ECOFF swapping routines. */ 43#include "coff/sym.h" 44#include "coff/symconst.h" 45#include "coff/internal.h" 46#include "coff/ecoff.h" 47#include "coff/mips.h" 48#define ECOFF_SIGNED_32 49#include "ecoffswap.h" 50 51static bfd_reloc_status_type gprel32_with_gp 52 (bfd *, asymbol *, arelent *, asection *, bfd_boolean, void *, bfd_vma); 53static bfd_reloc_status_type mips_elf_gprel32_reloc 54 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 55static bfd_reloc_status_type mips32_64bit_reloc 56 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 57static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup 58 (bfd *, bfd_reloc_code_real_type); 59static reloc_howto_type *mips_elf32_rtype_to_howto 60 (unsigned int, bfd_boolean); 61static void mips_info_to_howto_rel 62 (bfd *, arelent *, Elf_Internal_Rela *); 63static void mips_info_to_howto_rela 64 (bfd *, arelent *, Elf_Internal_Rela *); 65static bfd_boolean mips_elf_sym_is_global 66 (bfd *, asymbol *); 67static bfd_boolean mips_elf32_object_p 68 (bfd *); 69static bfd_boolean mips_elf_is_local_label_name 70 (bfd *, const char *); 71static bfd_reloc_status_type mips16_jump_reloc 72 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 73static bfd_reloc_status_type mips16_gprel_reloc 74 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 75static bfd_reloc_status_type mips_elf_final_gp 76 (bfd *, asymbol *, bfd_boolean, char **, bfd_vma *); 77static bfd_boolean mips_elf_assign_gp 78 (bfd *, bfd_vma *); 79static bfd_boolean elf32_mips_grok_prstatus 80 (bfd *, Elf_Internal_Note *); 81static bfd_boolean elf32_mips_grok_psinfo 82 (bfd *, Elf_Internal_Note *); 83static irix_compat_t elf32_mips_irix_compat 84 (bfd *); 85 86extern const bfd_target bfd_elf32_bigmips_vec; 87extern const bfd_target bfd_elf32_littlemips_vec; 88 89/* Nonzero if ABFD is using the N32 ABI. */ 90#define ABI_N32_P(abfd) \ 91 ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0) 92 93/* Whether we are trying to be compatible with IRIX at all. */ 94#define SGI_COMPAT(abfd) \ 95 (elf32_mips_irix_compat (abfd) != ict_none) 96 97/* The number of local .got entries we reserve. */ 98#define MIPS_RESERVED_GOTNO (2) 99 100/* In case we're on a 32-bit machine, construct a 64-bit "-1" value 101 from smaller values. Start with zero, widen, *then* decrement. */ 102#define MINUS_ONE (((bfd_vma)0) - 1) 103 104/* The relocation table used for SHT_REL sections. */ 105 106static reloc_howto_type elf_mips_howto_table_rel[] = 107{ 108 /* No relocation. */ 109 HOWTO (R_MIPS_NONE, /* type */ 110 0, /* rightshift */ 111 0, /* size (0 = byte, 1 = short, 2 = long) */ 112 0, /* bitsize */ 113 FALSE, /* pc_relative */ 114 0, /* bitpos */ 115 complain_overflow_dont, /* complain_on_overflow */ 116 _bfd_mips_elf_generic_reloc, /* special_function */ 117 "R_MIPS_NONE", /* name */ 118 FALSE, /* partial_inplace */ 119 0, /* src_mask */ 120 0, /* dst_mask */ 121 FALSE), /* pcrel_offset */ 122 123 /* 16 bit relocation. */ 124 HOWTO (R_MIPS_16, /* type */ 125 0, /* rightshift */ 126 2, /* size (0 = byte, 1 = short, 2 = long) */ 127 16, /* bitsize */ 128 FALSE, /* pc_relative */ 129 0, /* bitpos */ 130 complain_overflow_signed, /* complain_on_overflow */ 131 _bfd_mips_elf_generic_reloc, /* special_function */ 132 "R_MIPS_16", /* name */ 133 TRUE, /* partial_inplace */ 134 0x0000ffff, /* src_mask */ 135 0x0000ffff, /* dst_mask */ 136 FALSE), /* pcrel_offset */ 137 138 /* 32 bit relocation. */ 139 HOWTO (R_MIPS_32, /* type */ 140 0, /* rightshift */ 141 2, /* size (0 = byte, 1 = short, 2 = long) */ 142 32, /* bitsize */ 143 FALSE, /* pc_relative */ 144 0, /* bitpos */ 145 complain_overflow_dont, /* complain_on_overflow */ 146 _bfd_mips_elf_generic_reloc, /* special_function */ 147 "R_MIPS_32", /* name */ 148 TRUE, /* partial_inplace */ 149 0xffffffff, /* src_mask */ 150 0xffffffff, /* dst_mask */ 151 FALSE), /* pcrel_offset */ 152 153 /* 32 bit symbol relative relocation. */ 154 HOWTO (R_MIPS_REL32, /* type */ 155 0, /* rightshift */ 156 2, /* size (0 = byte, 1 = short, 2 = long) */ 157 32, /* bitsize */ 158 FALSE, /* pc_relative */ 159 0, /* bitpos */ 160 complain_overflow_dont, /* complain_on_overflow */ 161 _bfd_mips_elf_generic_reloc, /* special_function */ 162 "R_MIPS_REL32", /* name */ 163 TRUE, /* partial_inplace */ 164 0xffffffff, /* src_mask */ 165 0xffffffff, /* dst_mask */ 166 FALSE), /* pcrel_offset */ 167 168 /* 26 bit jump address. */ 169 HOWTO (R_MIPS_26, /* type */ 170 2, /* rightshift */ 171 2, /* size (0 = byte, 1 = short, 2 = long) */ 172 26, /* bitsize */ 173 FALSE, /* pc_relative */ 174 0, /* bitpos */ 175 complain_overflow_dont, /* complain_on_overflow */ 176 /* This needs complex overflow 177 detection, because the upper four 178 bits must match the PC + 4. */ 179 _bfd_mips_elf_generic_reloc, /* special_function */ 180 "R_MIPS_26", /* name */ 181 TRUE, /* partial_inplace */ 182 0x03ffffff, /* src_mask */ 183 0x03ffffff, /* dst_mask */ 184 FALSE), /* pcrel_offset */ 185 186 /* High 16 bits of symbol value. */ 187 HOWTO (R_MIPS_HI16, /* type */ 188 16, /* rightshift */ 189 2, /* size (0 = byte, 1 = short, 2 = long) */ 190 16, /* bitsize */ 191 FALSE, /* pc_relative */ 192 0, /* bitpos */ 193 complain_overflow_dont, /* complain_on_overflow */ 194 _bfd_mips_elf_hi16_reloc, /* special_function */ 195 "R_MIPS_HI16", /* name */ 196 TRUE, /* partial_inplace */ 197 0x0000ffff, /* src_mask */ 198 0x0000ffff, /* dst_mask */ 199 FALSE), /* pcrel_offset */ 200 201 /* Low 16 bits of symbol value. */ 202 HOWTO (R_MIPS_LO16, /* type */ 203 0, /* rightshift */ 204 2, /* size (0 = byte, 1 = short, 2 = long) */ 205 16, /* bitsize */ 206 FALSE, /* pc_relative */ 207 0, /* bitpos */ 208 complain_overflow_dont, /* complain_on_overflow */ 209 _bfd_mips_elf_lo16_reloc, /* special_function */ 210 "R_MIPS_LO16", /* name */ 211 TRUE, /* partial_inplace */ 212 0x0000ffff, /* src_mask */ 213 0x0000ffff, /* dst_mask */ 214 FALSE), /* pcrel_offset */ 215 216 /* GP relative reference. */ 217 HOWTO (R_MIPS_GPREL16, /* type */ 218 0, /* rightshift */ 219 2, /* size (0 = byte, 1 = short, 2 = long) */ 220 16, /* bitsize */ 221 FALSE, /* pc_relative */ 222 0, /* bitpos */ 223 complain_overflow_signed, /* complain_on_overflow */ 224 _bfd_mips_elf32_gprel16_reloc, /* special_function */ 225 "R_MIPS_GPREL16", /* name */ 226 TRUE, /* partial_inplace */ 227 0x0000ffff, /* src_mask */ 228 0x0000ffff, /* dst_mask */ 229 FALSE), /* pcrel_offset */ 230 231 /* Reference to literal section. */ 232 HOWTO (R_MIPS_LITERAL, /* type */ 233 0, /* rightshift */ 234 2, /* size (0 = byte, 1 = short, 2 = long) */ 235 16, /* bitsize */ 236 FALSE, /* pc_relative */ 237 0, /* bitpos */ 238 complain_overflow_signed, /* complain_on_overflow */ 239 _bfd_mips_elf32_gprel16_reloc, /* special_function */ 240 "R_MIPS_LITERAL", /* name */ 241 TRUE, /* partial_inplace */ 242 0x0000ffff, /* src_mask */ 243 0x0000ffff, /* dst_mask */ 244 FALSE), /* pcrel_offset */ 245 246 /* Reference to global offset table. */ 247 HOWTO (R_MIPS_GOT16, /* type */ 248 0, /* rightshift */ 249 2, /* size (0 = byte, 1 = short, 2 = long) */ 250 16, /* bitsize */ 251 FALSE, /* pc_relative */ 252 0, /* bitpos */ 253 complain_overflow_signed, /* complain_on_overflow */ 254 _bfd_mips_elf_got16_reloc, /* special_function */ 255 "R_MIPS_GOT16", /* name */ 256 TRUE, /* partial_inplace */ 257 0x0000ffff, /* src_mask */ 258 0x0000ffff, /* dst_mask */ 259 FALSE), /* pcrel_offset */ 260 261 /* 16 bit PC relative reference. Note that the ABI document has a typo 262 and claims R_MIPS_PC16 to be not rightshifted, rendering it useless. 263 We do the right thing here. */ 264 HOWTO (R_MIPS_PC16, /* type */ 265 2, /* rightshift */ 266 2, /* size (0 = byte, 1 = short, 2 = long) */ 267 16, /* bitsize */ 268 TRUE, /* pc_relative */ 269 0, /* bitpos */ 270 complain_overflow_signed, /* complain_on_overflow */ 271 _bfd_mips_elf_generic_reloc, /* special_function */ 272 "R_MIPS_PC16", /* name */ 273 TRUE, /* partial_inplace */ 274 0x0000ffff, /* src_mask */ 275 0x0000ffff, /* dst_mask */ 276 TRUE), /* pcrel_offset */ 277 278 /* 16 bit call through global offset table. */ 279 HOWTO (R_MIPS_CALL16, /* type */ 280 0, /* rightshift */ 281 2, /* size (0 = byte, 1 = short, 2 = long) */ 282 16, /* bitsize */ 283 FALSE, /* pc_relative */ 284 0, /* bitpos */ 285 complain_overflow_signed, /* complain_on_overflow */ 286 _bfd_mips_elf_generic_reloc, /* special_function */ 287 "R_MIPS_CALL16", /* name */ 288 TRUE, /* partial_inplace */ 289 0x0000ffff, /* src_mask */ 290 0x0000ffff, /* dst_mask */ 291 FALSE), /* pcrel_offset */ 292 293 /* 32 bit GP relative reference. */ 294 HOWTO (R_MIPS_GPREL32, /* type */ 295 0, /* rightshift */ 296 2, /* size (0 = byte, 1 = short, 2 = long) */ 297 32, /* bitsize */ 298 FALSE, /* pc_relative */ 299 0, /* bitpos */ 300 complain_overflow_dont, /* complain_on_overflow */ 301 mips_elf_gprel32_reloc, /* special_function */ 302 "R_MIPS_GPREL32", /* name */ 303 TRUE, /* partial_inplace */ 304 0xffffffff, /* src_mask */ 305 0xffffffff, /* dst_mask */ 306 FALSE), /* pcrel_offset */ 307 308 /* The remaining relocs are defined on Irix 5, although they are 309 not defined by the ABI. */ 310 EMPTY_HOWTO (13), 311 EMPTY_HOWTO (14), 312 EMPTY_HOWTO (15), 313 314 /* A 5 bit shift field. */ 315 HOWTO (R_MIPS_SHIFT5, /* type */ 316 0, /* rightshift */ 317 2, /* size (0 = byte, 1 = short, 2 = long) */ 318 5, /* bitsize */ 319 FALSE, /* pc_relative */ 320 6, /* bitpos */ 321 complain_overflow_bitfield, /* complain_on_overflow */ 322 _bfd_mips_elf_generic_reloc, /* special_function */ 323 "R_MIPS_SHIFT5", /* name */ 324 TRUE, /* partial_inplace */ 325 0x000007c0, /* src_mask */ 326 0x000007c0, /* dst_mask */ 327 FALSE), /* pcrel_offset */ 328 329 /* A 6 bit shift field. */ 330 /* FIXME: This is not handled correctly; a special function is 331 needed to put the most significant bit in the right place. */ 332 HOWTO (R_MIPS_SHIFT6, /* type */ 333 0, /* rightshift */ 334 2, /* size (0 = byte, 1 = short, 2 = long) */ 335 6, /* bitsize */ 336 FALSE, /* pc_relative */ 337 6, /* bitpos */ 338 complain_overflow_bitfield, /* complain_on_overflow */ 339 _bfd_mips_elf_generic_reloc, /* special_function */ 340 "R_MIPS_SHIFT6", /* name */ 341 TRUE, /* partial_inplace */ 342 0x000007c4, /* src_mask */ 343 0x000007c4, /* dst_mask */ 344 FALSE), /* pcrel_offset */ 345 346 /* A 64 bit relocation. */ 347 HOWTO (R_MIPS_64, /* type */ 348 0, /* rightshift */ 349 4, /* size (0 = byte, 1 = short, 2 = long) */ 350 64, /* bitsize */ 351 FALSE, /* pc_relative */ 352 0, /* bitpos */ 353 complain_overflow_dont, /* complain_on_overflow */ 354 mips32_64bit_reloc, /* special_function */ 355 "R_MIPS_64", /* name */ 356 TRUE, /* partial_inplace */ 357 MINUS_ONE, /* src_mask */ 358 MINUS_ONE, /* dst_mask */ 359 FALSE), /* pcrel_offset */ 360 361 /* Displacement in the global offset table. */ 362 HOWTO (R_MIPS_GOT_DISP, /* type */ 363 0, /* rightshift */ 364 2, /* size (0 = byte, 1 = short, 2 = long) */ 365 16, /* bitsize */ 366 FALSE, /* pc_relative */ 367 0, /* bitpos */ 368 complain_overflow_signed, /* complain_on_overflow */ 369 _bfd_mips_elf_generic_reloc, /* special_function */ 370 "R_MIPS_GOT_DISP", /* name */ 371 TRUE, /* partial_inplace */ 372 0x0000ffff, /* src_mask */ 373 0x0000ffff, /* dst_mask */ 374 FALSE), /* pcrel_offset */ 375 376 /* Displacement to page pointer in the global offset table. */ 377 HOWTO (R_MIPS_GOT_PAGE, /* type */ 378 0, /* rightshift */ 379 2, /* size (0 = byte, 1 = short, 2 = long) */ 380 16, /* bitsize */ 381 FALSE, /* pc_relative */ 382 0, /* bitpos */ 383 complain_overflow_signed, /* complain_on_overflow */ 384 _bfd_mips_elf_generic_reloc, /* special_function */ 385 "R_MIPS_GOT_PAGE", /* name */ 386 TRUE, /* partial_inplace */ 387 0x0000ffff, /* src_mask */ 388 0x0000ffff, /* dst_mask */ 389 FALSE), /* pcrel_offset */ 390 391 /* Offset from page pointer in the global offset table. */ 392 HOWTO (R_MIPS_GOT_OFST, /* type */ 393 0, /* rightshift */ 394 2, /* size (0 = byte, 1 = short, 2 = long) */ 395 16, /* bitsize */ 396 FALSE, /* pc_relative */ 397 0, /* bitpos */ 398 complain_overflow_signed, /* complain_on_overflow */ 399 _bfd_mips_elf_generic_reloc, /* special_function */ 400 "R_MIPS_GOT_OFST", /* name */ 401 TRUE, /* partial_inplace */ 402 0x0000ffff, /* src_mask */ 403 0x0000ffff, /* dst_mask */ 404 FALSE), /* pcrel_offset */ 405 406 /* High 16 bits of displacement in global offset table. */ 407 HOWTO (R_MIPS_GOT_HI16, /* type */ 408 0, /* rightshift */ 409 2, /* size (0 = byte, 1 = short, 2 = long) */ 410 16, /* bitsize */ 411 FALSE, /* pc_relative */ 412 0, /* bitpos */ 413 complain_overflow_dont, /* complain_on_overflow */ 414 _bfd_mips_elf_generic_reloc, /* special_function */ 415 "R_MIPS_GOT_HI16", /* name */ 416 TRUE, /* partial_inplace */ 417 0x0000ffff, /* src_mask */ 418 0x0000ffff, /* dst_mask */ 419 FALSE), /* pcrel_offset */ 420 421 /* Low 16 bits of displacement in global offset table. */ 422 HOWTO (R_MIPS_GOT_LO16, /* type */ 423 0, /* rightshift */ 424 2, /* size (0 = byte, 1 = short, 2 = long) */ 425 16, /* bitsize */ 426 FALSE, /* pc_relative */ 427 0, /* bitpos */ 428 complain_overflow_dont, /* complain_on_overflow */ 429 _bfd_mips_elf_generic_reloc, /* special_function */ 430 "R_MIPS_GOT_LO16", /* name */ 431 TRUE, /* partial_inplace */ 432 0x0000ffff, /* src_mask */ 433 0x0000ffff, /* dst_mask */ 434 FALSE), /* pcrel_offset */ 435 436 /* 64 bit subtraction. Used in the N32 ABI. */ 437 HOWTO (R_MIPS_SUB, /* type */ 438 0, /* rightshift */ 439 4, /* size (0 = byte, 1 = short, 2 = long) */ 440 64, /* bitsize */ 441 FALSE, /* pc_relative */ 442 0, /* bitpos */ 443 complain_overflow_dont, /* complain_on_overflow */ 444 _bfd_mips_elf_generic_reloc, /* special_function */ 445 "R_MIPS_SUB", /* name */ 446 TRUE, /* partial_inplace */ 447 MINUS_ONE, /* src_mask */ 448 MINUS_ONE, /* dst_mask */ 449 FALSE), /* pcrel_offset */ 450 451 /* Used to cause the linker to insert and delete instructions? */ 452 EMPTY_HOWTO (R_MIPS_INSERT_A), 453 EMPTY_HOWTO (R_MIPS_INSERT_B), 454 EMPTY_HOWTO (R_MIPS_DELETE), 455 456 /* Get the higher value of a 64 bit addend. */ 457 HOWTO (R_MIPS_HIGHER, /* type */ 458 0, /* rightshift */ 459 2, /* size (0 = byte, 1 = short, 2 = long) */ 460 16, /* bitsize */ 461 FALSE, /* pc_relative */ 462 0, /* bitpos */ 463 complain_overflow_dont, /* complain_on_overflow */ 464 _bfd_mips_elf_generic_reloc, /* special_function */ 465 "R_MIPS_HIGHER", /* name */ 466 TRUE, /* partial_inplace */ 467 0x0000ffff, /* src_mask */ 468 0x0000ffff, /* dst_mask */ 469 FALSE), /* pcrel_offset */ 470 471 /* Get the highest value of a 64 bit addend. */ 472 HOWTO (R_MIPS_HIGHEST, /* type */ 473 0, /* rightshift */ 474 2, /* size (0 = byte, 1 = short, 2 = long) */ 475 16, /* bitsize */ 476 FALSE, /* pc_relative */ 477 0, /* bitpos */ 478 complain_overflow_dont, /* complain_on_overflow */ 479 _bfd_mips_elf_generic_reloc, /* special_function */ 480 "R_MIPS_HIGHEST", /* name */ 481 TRUE, /* partial_inplace */ 482 0x0000ffff, /* src_mask */ 483 0x0000ffff, /* dst_mask */ 484 FALSE), /* pcrel_offset */ 485 486 /* High 16 bits of displacement in global offset table. */ 487 HOWTO (R_MIPS_CALL_HI16, /* type */ 488 0, /* rightshift */ 489 2, /* size (0 = byte, 1 = short, 2 = long) */ 490 16, /* bitsize */ 491 FALSE, /* pc_relative */ 492 0, /* bitpos */ 493 complain_overflow_dont, /* complain_on_overflow */ 494 _bfd_mips_elf_generic_reloc, /* special_function */ 495 "R_MIPS_CALL_HI16", /* name */ 496 TRUE, /* partial_inplace */ 497 0x0000ffff, /* src_mask */ 498 0x0000ffff, /* dst_mask */ 499 FALSE), /* pcrel_offset */ 500 501 /* Low 16 bits of displacement in global offset table. */ 502 HOWTO (R_MIPS_CALL_LO16, /* type */ 503 0, /* rightshift */ 504 2, /* size (0 = byte, 1 = short, 2 = long) */ 505 16, /* bitsize */ 506 FALSE, /* pc_relative */ 507 0, /* bitpos */ 508 complain_overflow_dont, /* complain_on_overflow */ 509 _bfd_mips_elf_generic_reloc, /* special_function */ 510 "R_MIPS_CALL_LO16", /* name */ 511 TRUE, /* partial_inplace */ 512 0x0000ffff, /* src_mask */ 513 0x0000ffff, /* dst_mask */ 514 FALSE), /* pcrel_offset */ 515 516 /* Section displacement. */ 517 HOWTO (R_MIPS_SCN_DISP, /* type */ 518 0, /* rightshift */ 519 2, /* size (0 = byte, 1 = short, 2 = long) */ 520 32, /* bitsize */ 521 FALSE, /* pc_relative */ 522 0, /* bitpos */ 523 complain_overflow_dont, /* complain_on_overflow */ 524 _bfd_mips_elf_generic_reloc, /* special_function */ 525 "R_MIPS_SCN_DISP", /* name */ 526 TRUE, /* partial_inplace */ 527 0xffffffff, /* src_mask */ 528 0xffffffff, /* dst_mask */ 529 FALSE), /* pcrel_offset */ 530 531 EMPTY_HOWTO (R_MIPS_REL16), 532 EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE), 533 EMPTY_HOWTO (R_MIPS_PJUMP), 534 EMPTY_HOWTO (R_MIPS_RELGOT), 535 536 /* Protected jump conversion. This is an optimization hint. No 537 relocation is required for correctness. */ 538 HOWTO (R_MIPS_JALR, /* type */ 539 0, /* rightshift */ 540 2, /* size (0 = byte, 1 = short, 2 = long) */ 541 32, /* bitsize */ 542 FALSE, /* pc_relative */ 543 0, /* bitpos */ 544 complain_overflow_dont, /* complain_on_overflow */ 545 _bfd_mips_elf_generic_reloc, /* special_function */ 546 "R_MIPS_JALR", /* name */ 547 FALSE, /* partial_inplace */ 548 0x00000000, /* src_mask */ 549 0x00000000, /* dst_mask */ 550 FALSE), /* pcrel_offset */ 551 552 /* TLS GD/LD dynamic relocations. */ 553 HOWTO (R_MIPS_TLS_DTPMOD32, /* type */ 554 0, /* rightshift */ 555 2, /* size (0 = byte, 1 = short, 2 = long) */ 556 32, /* bitsize */ 557 FALSE, /* pc_relative */ 558 0, /* bitpos */ 559 complain_overflow_dont, /* complain_on_overflow */ 560 _bfd_mips_elf_generic_reloc, /* special_function */ 561 "R_MIPS_TLS_DTPMOD32", /* name */ 562 TRUE, /* partial_inplace */ 563 0xffffffff, /* src_mask */ 564 0xffffffff, /* dst_mask */ 565 FALSE), /* pcrel_offset */ 566 567 HOWTO (R_MIPS_TLS_DTPREL32, /* type */ 568 0, /* rightshift */ 569 2, /* size (0 = byte, 1 = short, 2 = long) */ 570 32, /* bitsize */ 571 FALSE, /* pc_relative */ 572 0, /* bitpos */ 573 complain_overflow_dont, /* complain_on_overflow */ 574 _bfd_mips_elf_generic_reloc, /* special_function */ 575 "R_MIPS_TLS_DTPREL32", /* name */ 576 TRUE, /* partial_inplace */ 577 0xffffffff, /* src_mask */ 578 0xffffffff, /* dst_mask */ 579 FALSE), /* pcrel_offset */ 580 581 EMPTY_HOWTO (R_MIPS_TLS_DTPMOD64), 582 EMPTY_HOWTO (R_MIPS_TLS_DTPREL64), 583 584 /* TLS general dynamic variable reference. */ 585 HOWTO (R_MIPS_TLS_GD, /* type */ 586 0, /* rightshift */ 587 2, /* size (0 = byte, 1 = short, 2 = long) */ 588 16, /* bitsize */ 589 FALSE, /* pc_relative */ 590 0, /* bitpos */ 591 complain_overflow_signed, /* complain_on_overflow */ 592 _bfd_mips_elf_generic_reloc, /* special_function */ 593 "R_MIPS_TLS_GD", /* name */ 594 TRUE, /* partial_inplace */ 595 0x0000ffff, /* src_mask */ 596 0x0000ffff, /* dst_mask */ 597 FALSE), /* pcrel_offset */ 598 599 /* TLS local dynamic variable reference. */ 600 HOWTO (R_MIPS_TLS_LDM, /* type */ 601 0, /* rightshift */ 602 2, /* size (0 = byte, 1 = short, 2 = long) */ 603 16, /* bitsize */ 604 FALSE, /* pc_relative */ 605 0, /* bitpos */ 606 complain_overflow_signed, /* complain_on_overflow */ 607 _bfd_mips_elf_generic_reloc, /* special_function */ 608 "R_MIPS_TLS_LDM", /* name */ 609 TRUE, /* partial_inplace */ 610 0x0000ffff, /* src_mask */ 611 0x0000ffff, /* dst_mask */ 612 FALSE), /* pcrel_offset */ 613 614 /* TLS local dynamic offset. */ 615 HOWTO (R_MIPS_TLS_DTPREL_HI16, /* type */ 616 0, /* rightshift */ 617 2, /* size (0 = byte, 1 = short, 2 = long) */ 618 16, /* bitsize */ 619 FALSE, /* pc_relative */ 620 0, /* bitpos */ 621 complain_overflow_signed, /* complain_on_overflow */ 622 _bfd_mips_elf_generic_reloc, /* special_function */ 623 "R_MIPS_TLS_DTPREL_HI16", /* name */ 624 TRUE, /* partial_inplace */ 625 0x0000ffff, /* src_mask */ 626 0x0000ffff, /* dst_mask */ 627 FALSE), /* pcrel_offset */ 628 629 /* TLS local dynamic offset. */ 630 HOWTO (R_MIPS_TLS_DTPREL_LO16, /* type */ 631 0, /* rightshift */ 632 2, /* size (0 = byte, 1 = short, 2 = long) */ 633 16, /* bitsize */ 634 FALSE, /* pc_relative */ 635 0, /* bitpos */ 636 complain_overflow_signed, /* complain_on_overflow */ 637 _bfd_mips_elf_generic_reloc, /* special_function */ 638 "R_MIPS_TLS_DTPREL_LO16", /* name */ 639 TRUE, /* partial_inplace */ 640 0x0000ffff, /* src_mask */ 641 0x0000ffff, /* dst_mask */ 642 FALSE), /* pcrel_offset */ 643 644 /* TLS thread pointer offset. */ 645 HOWTO (R_MIPS_TLS_GOTTPREL, /* type */ 646 0, /* rightshift */ 647 2, /* size (0 = byte, 1 = short, 2 = long) */ 648 16, /* bitsize */ 649 FALSE, /* pc_relative */ 650 0, /* bitpos */ 651 complain_overflow_signed, /* complain_on_overflow */ 652 _bfd_mips_elf_generic_reloc, /* special_function */ 653 "R_MIPS_TLS_GOTTPREL", /* name */ 654 TRUE, /* partial_inplace */ 655 0x0000ffff, /* src_mask */ 656 0x0000ffff, /* dst_mask */ 657 FALSE), /* pcrel_offset */ 658 659 /* TLS IE dynamic relocations. */ 660 HOWTO (R_MIPS_TLS_TPREL32, /* type */ 661 0, /* rightshift */ 662 2, /* size (0 = byte, 1 = short, 2 = long) */ 663 32, /* bitsize */ 664 FALSE, /* pc_relative */ 665 0, /* bitpos */ 666 complain_overflow_dont, /* complain_on_overflow */ 667 _bfd_mips_elf_generic_reloc, /* special_function */ 668 "R_MIPS_TLS_TPREL32", /* name */ 669 TRUE, /* partial_inplace */ 670 0xffffffff, /* src_mask */ 671 0xffffffff, /* dst_mask */ 672 FALSE), /* pcrel_offset */ 673 674 EMPTY_HOWTO (R_MIPS_TLS_TPREL64), 675 676 /* TLS thread pointer offset. */ 677 HOWTO (R_MIPS_TLS_TPREL_HI16, /* type */ 678 0, /* rightshift */ 679 2, /* size (0 = byte, 1 = short, 2 = long) */ 680 16, /* bitsize */ 681 FALSE, /* pc_relative */ 682 0, /* bitpos */ 683 complain_overflow_signed, /* complain_on_overflow */ 684 _bfd_mips_elf_generic_reloc, /* special_function */ 685 "R_MIPS_TLS_TPREL_HI16", /* name */ 686 TRUE, /* partial_inplace */ 687 0x0000ffff, /* src_mask */ 688 0x0000ffff, /* dst_mask */ 689 FALSE), /* pcrel_offset */ 690 691 /* TLS thread pointer offset. */ 692 HOWTO (R_MIPS_TLS_TPREL_LO16, /* type */ 693 0, /* rightshift */ 694 2, /* size (0 = byte, 1 = short, 2 = long) */ 695 16, /* bitsize */ 696 FALSE, /* pc_relative */ 697 0, /* bitpos */ 698 complain_overflow_signed, /* complain_on_overflow */ 699 _bfd_mips_elf_generic_reloc, /* special_function */ 700 "R_MIPS_TLS_TPREL_LO16", /* name */ 701 TRUE, /* partial_inplace */ 702 0x0000ffff, /* src_mask */ 703 0x0000ffff, /* dst_mask */ 704 FALSE), /* pcrel_offset */ 705}; 706 707/* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This 708 is a hack to make the linker think that we need 64 bit values. */ 709static reloc_howto_type elf_mips_ctor64_howto = 710 HOWTO (R_MIPS_64, /* type */ 711 0, /* rightshift */ 712 4, /* size (0 = byte, 1 = short, 2 = long) */ 713 32, /* bitsize */ 714 FALSE, /* pc_relative */ 715 0, /* bitpos */ 716 complain_overflow_signed, /* complain_on_overflow */ 717 mips32_64bit_reloc, /* special_function */ 718 "R_MIPS_64", /* name */ 719 TRUE, /* partial_inplace */ 720 0xffffffff, /* src_mask */ 721 0xffffffff, /* dst_mask */ 722 FALSE); /* pcrel_offset */ 723 724static reloc_howto_type elf_mips16_howto_table_rel[] = 725{ 726 /* The reloc used for the mips16 jump instruction. */ 727 HOWTO (R_MIPS16_26, /* type */ 728 2, /* rightshift */ 729 2, /* size (0 = byte, 1 = short, 2 = long) */ 730 26, /* bitsize */ 731 FALSE, /* pc_relative */ 732 0, /* bitpos */ 733 complain_overflow_dont, /* complain_on_overflow */ 734 /* This needs complex overflow 735 detection, because the upper four 736 bits must match the PC. */ 737 mips16_jump_reloc, /* special_function */ 738 "R_MIPS16_26", /* name */ 739 TRUE, /* partial_inplace */ 740 0x3ffffff, /* src_mask */ 741 0x3ffffff, /* dst_mask */ 742 FALSE), /* pcrel_offset */ 743 744 /* The reloc used for the mips16 gprel instruction. */ 745 HOWTO (R_MIPS16_GPREL, /* type */ 746 0, /* rightshift */ 747 2, /* size (0 = byte, 1 = short, 2 = long) */ 748 16, /* bitsize */ 749 FALSE, /* pc_relative */ 750 0, /* bitpos */ 751 complain_overflow_signed, /* complain_on_overflow */ 752 mips16_gprel_reloc, /* special_function */ 753 "R_MIPS16_GPREL", /* name */ 754 TRUE, /* partial_inplace */ 755 0x0000ffff, /* src_mask */ 756 0x0000ffff, /* dst_mask */ 757 FALSE), /* pcrel_offset */ 758 759 /* A placeholder for MIPS16 reference to global offset table. */ 760 EMPTY_HOWTO (R_MIPS16_GOT16), 761 762 /* A placeholder for MIPS16 16 bit call through global offset table. */ 763 EMPTY_HOWTO (R_MIPS16_CALL16), 764 765 /* MIPS16 high 16 bits of symbol value. */ 766 HOWTO (R_MIPS16_HI16, /* type */ 767 16, /* rightshift */ 768 2, /* size (0 = byte, 1 = short, 2 = long) */ 769 16, /* bitsize */ 770 FALSE, /* pc_relative */ 771 0, /* bitpos */ 772 complain_overflow_dont, /* complain_on_overflow */ 773 _bfd_mips_elf_hi16_reloc, /* special_function */ 774 "R_MIPS16_HI16", /* name */ 775 TRUE, /* partial_inplace */ 776 0x0000ffff, /* src_mask */ 777 0x0000ffff, /* dst_mask */ 778 FALSE), /* pcrel_offset */ 779 780 /* MIPS16 low 16 bits of symbol value. */ 781 HOWTO (R_MIPS16_LO16, /* type */ 782 0, /* rightshift */ 783 2, /* size (0 = byte, 1 = short, 2 = long) */ 784 16, /* bitsize */ 785 FALSE, /* pc_relative */ 786 0, /* bitpos */ 787 complain_overflow_dont, /* complain_on_overflow */ 788 _bfd_mips_elf_lo16_reloc, /* special_function */ 789 "R_MIPS16_LO16", /* name */ 790 TRUE, /* partial_inplace */ 791 0x0000ffff, /* src_mask */ 792 0x0000ffff, /* dst_mask */ 793 FALSE), /* pcrel_offset */ 794}; 795 796/* 16 bit offset for pc-relative branches. */ 797static reloc_howto_type elf_mips_gnu_rel16_s2 = 798 HOWTO (R_MIPS_GNU_REL16_S2, /* type */ 799 2, /* rightshift */ 800 2, /* size (0 = byte, 1 = short, 2 = long) */ 801 16, /* bitsize */ 802 TRUE, /* pc_relative */ 803 0, /* bitpos */ 804 complain_overflow_signed, /* complain_on_overflow */ 805 _bfd_mips_elf_generic_reloc, /* special_function */ 806 "R_MIPS_GNU_REL16_S2", /* name */ 807 TRUE, /* partial_inplace */ 808 0xffff, /* src_mask */ 809 0xffff, /* dst_mask */ 810 TRUE); /* pcrel_offset */ 811 812/* 32 bit pc-relative. This was a GNU extension used by embedded-PIC. 813 It was co-opted by mips-linux for exception-handling data. It is no 814 longer used, but should continue to be supported by the linker for 815 backward compatibility. (GCC stopped using it in May, 2004.) */ 816static reloc_howto_type elf_mips_gnu_pcrel32 = 817 HOWTO (R_MIPS_PC32, /* type */ 818 0, /* rightshift */ 819 2, /* size (0 = byte, 1 = short, 2 = long) */ 820 32, /* bitsize */ 821 TRUE, /* pc_relative */ 822 0, /* bitpos */ 823 complain_overflow_signed, /* complain_on_overflow */ 824 _bfd_mips_elf_generic_reloc, /* special_function */ 825 "R_MIPS_PC32", /* name */ 826 TRUE, /* partial_inplace */ 827 0xffffffff, /* src_mask */ 828 0xffffffff, /* dst_mask */ 829 TRUE); /* pcrel_offset */ 830 831/* GNU extension to record C++ vtable hierarchy */ 832static reloc_howto_type elf_mips_gnu_vtinherit_howto = 833 HOWTO (R_MIPS_GNU_VTINHERIT, /* type */ 834 0, /* rightshift */ 835 2, /* size (0 = byte, 1 = short, 2 = long) */ 836 0, /* bitsize */ 837 FALSE, /* pc_relative */ 838 0, /* bitpos */ 839 complain_overflow_dont, /* complain_on_overflow */ 840 NULL, /* special_function */ 841 "R_MIPS_GNU_VTINHERIT", /* name */ 842 FALSE, /* partial_inplace */ 843 0, /* src_mask */ 844 0, /* dst_mask */ 845 FALSE); /* pcrel_offset */ 846 847/* GNU extension to record C++ vtable member usage */ 848static reloc_howto_type elf_mips_gnu_vtentry_howto = 849 HOWTO (R_MIPS_GNU_VTENTRY, /* type */ 850 0, /* rightshift */ 851 2, /* size (0 = byte, 1 = short, 2 = long) */ 852 0, /* bitsize */ 853 FALSE, /* pc_relative */ 854 0, /* bitpos */ 855 complain_overflow_dont, /* complain_on_overflow */ 856 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 857 "R_MIPS_GNU_VTENTRY", /* name */ 858 FALSE, /* partial_inplace */ 859 0, /* src_mask */ 860 0, /* dst_mask */ 861 FALSE); /* pcrel_offset */ 862 863/* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a 864 dangerous relocation. */ 865 866static bfd_boolean 867mips_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp) 868{ 869 unsigned int count; 870 asymbol **sym; 871 unsigned int i; 872 873 /* If we've already figured out what GP will be, just return it. */ 874 *pgp = _bfd_get_gp_value (output_bfd); 875 if (*pgp) 876 return TRUE; 877 878 count = bfd_get_symcount (output_bfd); 879 sym = bfd_get_outsymbols (output_bfd); 880 881 /* The linker script will have created a symbol named `_gp' with the 882 appropriate value. */ 883 if (sym == NULL) 884 i = count; 885 else 886 { 887 for (i = 0; i < count; i++, sym++) 888 { 889 register const char *name; 890 891 name = bfd_asymbol_name (*sym); 892 if (*name == '_' && strcmp (name, "_gp") == 0) 893 { 894 *pgp = bfd_asymbol_value (*sym); 895 _bfd_set_gp_value (output_bfd, *pgp); 896 break; 897 } 898 } 899 } 900 901 if (i >= count) 902 { 903 /* Only get the error once. */ 904 *pgp = 4; 905 _bfd_set_gp_value (output_bfd, *pgp); 906 return FALSE; 907 } 908 909 return TRUE; 910} 911 912/* We have to figure out the gp value, so that we can adjust the 913 symbol value correctly. We look up the symbol _gp in the output 914 BFD. If we can't find it, we're stuck. We cache it in the ELF 915 target data. We don't need to adjust the symbol value for an 916 external symbol if we are producing relocatable output. */ 917 918static bfd_reloc_status_type 919mips_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable, 920 char **error_message, bfd_vma *pgp) 921{ 922 if (bfd_is_und_section (symbol->section) 923 && ! relocatable) 924 { 925 *pgp = 0; 926 return bfd_reloc_undefined; 927 } 928 929 *pgp = _bfd_get_gp_value (output_bfd); 930 if (*pgp == 0 931 && (! relocatable 932 || (symbol->flags & BSF_SECTION_SYM) != 0)) 933 { 934 if (relocatable) 935 { 936 /* Make up a value. */ 937 *pgp = symbol->section->output_section->vma + 0x4000; 938 _bfd_set_gp_value (output_bfd, *pgp); 939 } 940 else if (!mips_elf_assign_gp (output_bfd, pgp)) 941 { 942 *error_message = 943 (char *) _("GP relative relocation when _gp not defined"); 944 return bfd_reloc_dangerous; 945 } 946 } 947 948 return bfd_reloc_ok; 949} 950 951/* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must 952 become the offset from the gp register. This function also handles 953 R_MIPS_LITERAL relocations, although those can be handled more 954 cleverly because the entries in the .lit8 and .lit4 sections can be 955 merged. */ 956 957bfd_reloc_status_type 958_bfd_mips_elf32_gprel16_reloc (bfd *abfd, arelent *reloc_entry, 959 asymbol *symbol, void *data, 960 asection *input_section, bfd *output_bfd, 961 char **error_message) 962{ 963 bfd_boolean relocatable; 964 bfd_reloc_status_type ret; 965 bfd_vma gp; 966 967 /* R_MIPS_LITERAL relocations are defined for local symbols only. */ 968 if (reloc_entry->howto->type == R_MIPS_LITERAL 969 && output_bfd != NULL 970 && (symbol->flags & BSF_SECTION_SYM) == 0 971 && (symbol->flags & BSF_LOCAL) != 0) 972 { 973 *error_message = (char *) 974 _("literal relocation occurs for an external symbol"); 975 return bfd_reloc_outofrange; 976 } 977 978 if (output_bfd != NULL) 979 relocatable = TRUE; 980 else 981 { 982 relocatable = FALSE; 983 output_bfd = symbol->section->output_section->owner; 984 } 985 986 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message, 987 &gp); 988 if (ret != bfd_reloc_ok) 989 return ret; 990 991 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, 992 input_section, relocatable, 993 data, gp); 994} 995 996/* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must 997 become the offset from the gp register. */ 998 999static bfd_reloc_status_type 1000mips_elf_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 1001 void *data, asection *input_section, bfd *output_bfd, 1002 char **error_message) 1003{ 1004 bfd_boolean relocatable; 1005 bfd_reloc_status_type ret; 1006 bfd_vma gp; 1007 1008 /* R_MIPS_GPREL32 relocations are defined for local symbols only. */ 1009 if (output_bfd != NULL 1010 && (symbol->flags & BSF_SECTION_SYM) == 0 1011 && (symbol->flags & BSF_LOCAL) != 0) 1012 { 1013 *error_message = (char *) 1014 _("32bits gp relative relocation occurs for an external symbol"); 1015 return bfd_reloc_outofrange; 1016 } 1017 1018 if (output_bfd != NULL) 1019 relocatable = TRUE; 1020 else 1021 { 1022 relocatable = FALSE; 1023 output_bfd = symbol->section->output_section->owner; 1024 } 1025 1026 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, 1027 error_message, &gp); 1028 if (ret != bfd_reloc_ok) 1029 return ret; 1030 1031 return gprel32_with_gp (abfd, symbol, reloc_entry, input_section, 1032 relocatable, data, gp); 1033} 1034 1035static bfd_reloc_status_type 1036gprel32_with_gp (bfd *abfd, asymbol *symbol, arelent *reloc_entry, 1037 asection *input_section, bfd_boolean relocatable, 1038 void *data, bfd_vma gp) 1039{ 1040 bfd_vma relocation; 1041 bfd_vma val; 1042 1043 if (bfd_is_com_section (symbol->section)) 1044 relocation = 0; 1045 else 1046 relocation = symbol->value; 1047 1048 relocation += symbol->section->output_section->vma; 1049 relocation += symbol->section->output_offset; 1050 1051 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) 1052 return bfd_reloc_outofrange; 1053 1054 /* Set val to the offset into the section or symbol. */ 1055 val = reloc_entry->addend; 1056 1057 if (reloc_entry->howto->partial_inplace) 1058 val += bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 1059 1060 /* Adjust val for the final section location and GP value. If we 1061 are producing relocatable output, we don't want to do this for 1062 an external symbol. */ 1063 if (! relocatable 1064 || (symbol->flags & BSF_SECTION_SYM) != 0) 1065 val += relocation - gp; 1066 1067 if (reloc_entry->howto->partial_inplace) 1068 bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address); 1069 else 1070 reloc_entry->addend = val; 1071 1072 if (relocatable) 1073 reloc_entry->address += input_section->output_offset; 1074 1075 return bfd_reloc_ok; 1076} 1077 1078/* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are 1079 generated when addresses are 64 bits. The upper 32 bits are a simple 1080 sign extension. */ 1081 1082static bfd_reloc_status_type 1083mips32_64bit_reloc (bfd *abfd, arelent *reloc_entry, 1084 asymbol *symbol ATTRIBUTE_UNUSED, 1085 void *data, asection *input_section, 1086 bfd *output_bfd, char **error_message) 1087{ 1088 bfd_reloc_status_type r; 1089 arelent reloc32; 1090 unsigned long val; 1091 bfd_size_type addr; 1092 1093 /* Do a normal 32 bit relocation on the lower 32 bits. */ 1094 reloc32 = *reloc_entry; 1095 if (bfd_big_endian (abfd)) 1096 reloc32.address += 4; 1097 reloc32.howto = &elf_mips_howto_table_rel[R_MIPS_32]; 1098 r = bfd_perform_relocation (abfd, &reloc32, data, input_section, 1099 output_bfd, error_message); 1100 1101 /* Sign extend into the upper 32 bits. */ 1102 val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address); 1103 if ((val & 0x80000000) != 0) 1104 val = 0xffffffff; 1105 else 1106 val = 0; 1107 addr = reloc_entry->address; 1108 if (bfd_little_endian (abfd)) 1109 addr += 4; 1110 bfd_put_32 (abfd, val, (bfd_byte *) data + addr); 1111 1112 return r; 1113} 1114 1115/* Handle a mips16 jump. */ 1116 1117static bfd_reloc_status_type 1118mips16_jump_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, 1119 asymbol *symbol, void *data ATTRIBUTE_UNUSED, 1120 asection *input_section, bfd *output_bfd, 1121 char **error_message ATTRIBUTE_UNUSED) 1122{ 1123 if (output_bfd != NULL 1124 && (symbol->flags & BSF_SECTION_SYM) == 0 1125 && reloc_entry->addend == 0) 1126 { 1127 reloc_entry->address += input_section->output_offset; 1128 return bfd_reloc_ok; 1129 } 1130 1131 /* FIXME. */ 1132 { 1133 static bfd_boolean warned; 1134 1135 if (! warned) 1136 (*_bfd_error_handler) 1137 (_("Linking mips16 objects into %s format is not supported"), 1138 bfd_get_target (input_section->output_section->owner)); 1139 warned = TRUE; 1140 } 1141 1142 return bfd_reloc_undefined; 1143} 1144 1145/* Handle a mips16 GP relative reloc. */ 1146 1147static bfd_reloc_status_type 1148mips16_gprel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 1149 void *data, asection *input_section, bfd *output_bfd, 1150 char **error_message) 1151{ 1152 bfd_boolean relocatable; 1153 bfd_reloc_status_type ret; 1154 bfd_byte *location; 1155 bfd_vma gp; 1156 1157 /* If we're relocating, and this is an external symbol, we don't want 1158 to change anything. */ 1159 if (output_bfd != NULL 1160 && (symbol->flags & BSF_SECTION_SYM) == 0 1161 && (symbol->flags & BSF_LOCAL) != 0) 1162 { 1163 reloc_entry->address += input_section->output_offset; 1164 return bfd_reloc_ok; 1165 } 1166 1167 if (output_bfd != NULL) 1168 relocatable = TRUE; 1169 else 1170 { 1171 relocatable = FALSE; 1172 output_bfd = symbol->section->output_section->owner; 1173 } 1174 1175 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message, 1176 &gp); 1177 if (ret != bfd_reloc_ok) 1178 return ret; 1179 1180 location = (bfd_byte *) data + reloc_entry->address; 1181 _bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE, 1182 location); 1183 ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, 1184 input_section, relocatable, 1185 data, gp); 1186 _bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, !relocatable, 1187 location); 1188 1189 return ret; 1190} 1191 1192/* A mapping from BFD reloc types to MIPS ELF reloc types. */ 1193 1194struct elf_reloc_map { 1195 bfd_reloc_code_real_type bfd_val; 1196 enum elf_mips_reloc_type elf_val; 1197}; 1198 1199static const struct elf_reloc_map mips_reloc_map[] = 1200{ 1201 { BFD_RELOC_NONE, R_MIPS_NONE }, 1202 { BFD_RELOC_16, R_MIPS_16 }, 1203 { BFD_RELOC_32, R_MIPS_32 }, 1204 /* There is no BFD reloc for R_MIPS_REL32. */ 1205 { BFD_RELOC_64, R_MIPS_64 }, 1206 { BFD_RELOC_MIPS_JMP, R_MIPS_26 }, 1207 { BFD_RELOC_HI16_S, R_MIPS_HI16 }, 1208 { BFD_RELOC_LO16, R_MIPS_LO16 }, 1209 { BFD_RELOC_GPREL16, R_MIPS_GPREL16 }, 1210 { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL }, 1211 { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 }, 1212 { BFD_RELOC_16_PCREL_S2, R_MIPS_PC16 }, 1213 { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 }, 1214 { BFD_RELOC_GPREL32, R_MIPS_GPREL32 }, 1215 { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 }, 1216 { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 }, 1217 { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 }, 1218 { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 }, 1219 { BFD_RELOC_MIPS_SUB, R_MIPS_SUB }, 1220 { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE }, 1221 { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST }, 1222 { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP }, 1223 { BFD_RELOC_MIPS_TLS_DTPMOD32, R_MIPS_TLS_DTPMOD32 }, 1224 { BFD_RELOC_MIPS_TLS_DTPREL32, R_MIPS_TLS_DTPREL32 }, 1225 { BFD_RELOC_MIPS_TLS_DTPMOD64, R_MIPS_TLS_DTPMOD64 }, 1226 { BFD_RELOC_MIPS_TLS_DTPREL64, R_MIPS_TLS_DTPREL64 }, 1227 { BFD_RELOC_MIPS_TLS_GD, R_MIPS_TLS_GD }, 1228 { BFD_RELOC_MIPS_TLS_LDM, R_MIPS_TLS_LDM }, 1229 { BFD_RELOC_MIPS_TLS_DTPREL_HI16, R_MIPS_TLS_DTPREL_HI16 }, 1230 { BFD_RELOC_MIPS_TLS_DTPREL_LO16, R_MIPS_TLS_DTPREL_LO16 }, 1231 { BFD_RELOC_MIPS_TLS_GOTTPREL, R_MIPS_TLS_GOTTPREL }, 1232 { BFD_RELOC_MIPS_TLS_TPREL32, R_MIPS_TLS_TPREL32 }, 1233 { BFD_RELOC_MIPS_TLS_TPREL64, R_MIPS_TLS_TPREL64 }, 1234 { BFD_RELOC_MIPS_TLS_TPREL_HI16, R_MIPS_TLS_TPREL_HI16 }, 1235 { BFD_RELOC_MIPS_TLS_TPREL_LO16, R_MIPS_TLS_TPREL_LO16 } 1236}; 1237 1238static const struct elf_reloc_map mips16_reloc_map[] = 1239{ 1240 { BFD_RELOC_MIPS16_JMP, R_MIPS16_26 - R_MIPS16_min }, 1241 { BFD_RELOC_MIPS16_GPREL, R_MIPS16_GPREL - R_MIPS16_min }, 1242 { BFD_RELOC_MIPS16_HI16_S, R_MIPS16_HI16 - R_MIPS16_min }, 1243 { BFD_RELOC_MIPS16_LO16, R_MIPS16_LO16 - R_MIPS16_min }, 1244}; 1245 1246/* Given a BFD reloc type, return a howto structure. */ 1247 1248static reloc_howto_type * 1249bfd_elf32_bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code) 1250{ 1251 unsigned int i; 1252 reloc_howto_type *howto_table = elf_mips_howto_table_rel; 1253 reloc_howto_type *howto16_table = elf_mips16_howto_table_rel; 1254 1255 for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); 1256 i++) 1257 { 1258 if (mips_reloc_map[i].bfd_val == code) 1259 return &howto_table[(int) mips_reloc_map[i].elf_val]; 1260 } 1261 1262 for (i = 0; i < sizeof (mips16_reloc_map) / sizeof (struct elf_reloc_map); 1263 i++) 1264 { 1265 if (mips16_reloc_map[i].bfd_val == code) 1266 return &howto16_table[(int) mips16_reloc_map[i].elf_val]; 1267 } 1268 1269 switch (code) 1270 { 1271 default: 1272 bfd_set_error (bfd_error_bad_value); 1273 return NULL; 1274 1275 case BFD_RELOC_CTOR: 1276 /* We need to handle BFD_RELOC_CTOR specially. 1277 Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the 1278 size of addresses of the ABI. */ 1279 if ((elf_elfheader (abfd)->e_flags & (E_MIPS_ABI_O64 1280 | E_MIPS_ABI_EABI64)) != 0) 1281 return &elf_mips_ctor64_howto; 1282 else 1283 return &howto_table[(int) R_MIPS_32]; 1284 1285 case BFD_RELOC_VTABLE_INHERIT: 1286 return &elf_mips_gnu_vtinherit_howto; 1287 case BFD_RELOC_VTABLE_ENTRY: 1288 return &elf_mips_gnu_vtentry_howto; 1289 case BFD_RELOC_32_PCREL: 1290 return &elf_mips_gnu_pcrel32; 1291 } 1292} 1293 1294/* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */ 1295 1296static reloc_howto_type * 1297mips_elf32_rtype_to_howto (unsigned int r_type, 1298 bfd_boolean rela_p ATTRIBUTE_UNUSED) 1299{ 1300 switch (r_type) 1301 { 1302 case R_MIPS_GNU_VTINHERIT: 1303 return &elf_mips_gnu_vtinherit_howto; 1304 case R_MIPS_GNU_VTENTRY: 1305 return &elf_mips_gnu_vtentry_howto; 1306 case R_MIPS_GNU_REL16_S2: 1307 return &elf_mips_gnu_rel16_s2; 1308 case R_MIPS_PC32: 1309 return &elf_mips_gnu_pcrel32; 1310 default: 1311 if (r_type >= R_MIPS16_min && r_type < R_MIPS16_max) 1312 return &elf_mips16_howto_table_rel[r_type - R_MIPS16_min]; 1313 BFD_ASSERT (r_type < (unsigned int) R_MIPS_max); 1314 return &elf_mips_howto_table_rel[r_type]; 1315 } 1316} 1317 1318/* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */ 1319 1320static void 1321mips_info_to_howto_rel (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst) 1322{ 1323 const struct elf_backend_data *bed; 1324 unsigned int r_type; 1325 1326 r_type = ELF32_R_TYPE (dst->r_info); 1327 bed = get_elf_backend_data (abfd); 1328 cache_ptr->howto = bed->elf_backend_mips_rtype_to_howto (r_type, FALSE); 1329 1330 /* The addend for a GPREL16 or LITERAL relocation comes from the GP 1331 value for the object file. We get the addend now, rather than 1332 when we do the relocation, because the symbol manipulations done 1333 by the linker may cause us to lose track of the input BFD. */ 1334 if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0 1335 && (r_type == (unsigned int) R_MIPS_GPREL16 1336 || r_type == (unsigned int) R_MIPS_LITERAL)) 1337 cache_ptr->addend = elf_gp (abfd); 1338} 1339 1340/* Given a MIPS Elf_Internal_Rela, fill in an arelent structure. */ 1341 1342static void 1343mips_info_to_howto_rela (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst) 1344{ 1345 mips_info_to_howto_rel (abfd, cache_ptr, dst); 1346 1347 /* If we ever need to do any extra processing with dst->r_addend 1348 (the field omitted in an Elf_Internal_Rel) we can do it here. */ 1349} 1350 1351/* Determine whether a symbol is global for the purposes of splitting 1352 the symbol table into global symbols and local symbols. At least 1353 on Irix 5, this split must be between section symbols and all other 1354 symbols. On most ELF targets the split is between static symbols 1355 and externally visible symbols. */ 1356 1357static bfd_boolean 1358mips_elf_sym_is_global (bfd *abfd ATTRIBUTE_UNUSED, asymbol *sym) 1359{ 1360 if (SGI_COMPAT (abfd)) 1361 return (sym->flags & BSF_SECTION_SYM) == 0; 1362 else 1363 return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 1364 || bfd_is_und_section (bfd_get_section (sym)) 1365 || bfd_is_com_section (bfd_get_section (sym))); 1366} 1367 1368/* Set the right machine number for a MIPS ELF file. */ 1369 1370static bfd_boolean 1371mips_elf32_object_p (bfd *abfd) 1372{ 1373 unsigned long mach; 1374 1375 /* Irix 5 and 6 are broken. Object file symbol tables are not always 1376 sorted correctly such that local symbols precede global symbols, 1377 and the sh_info field in the symbol table is not always right. */ 1378 if (SGI_COMPAT (abfd)) 1379 elf_bad_symtab (abfd) = TRUE; 1380 1381 if (ABI_N32_P (abfd)) 1382 return FALSE; 1383 1384 mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags); 1385 bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach); 1386 1387 return TRUE; 1388} 1389 1390/* MIPS ELF local labels start with '$', not 'L'. */ 1391 1392static bfd_boolean 1393mips_elf_is_local_label_name (bfd *abfd, const char *name) 1394{ 1395 if (name[0] == '$') 1396 return TRUE; 1397 1398 /* On Irix 6, the labels go back to starting with '.', so we accept 1399 the generic ELF local label syntax as well. */ 1400 return _bfd_elf_is_local_label_name (abfd, name); 1401} 1402 1403/* Support for core dump NOTE sections. */ 1404static bfd_boolean 1405elf32_mips_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 1406{ 1407 int offset; 1408 unsigned int size; 1409 1410 switch (note->descsz) 1411 { 1412 default: 1413 return FALSE; 1414 1415 case 256: /* Linux/MIPS */ 1416 /* pr_cursig */ 1417 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); 1418 1419 /* pr_pid */ 1420 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); 1421 1422 /* pr_reg */ 1423 offset = 72; 1424 size = 180; 1425 1426 break; 1427 } 1428 1429 /* Make a ".reg/999" section. */ 1430 return _bfd_elfcore_make_pseudosection (abfd, ".reg", 1431 size, note->descpos + offset); 1432} 1433 1434static bfd_boolean 1435elf32_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 1436{ 1437 switch (note->descsz) 1438 { 1439 default: 1440 return FALSE; 1441 1442 case 128: /* Linux/MIPS elf_prpsinfo */ 1443 elf_tdata (abfd)->core_program 1444 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); 1445 elf_tdata (abfd)->core_command 1446 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); 1447 } 1448 1449 /* Note that for some reason, a spurious space is tacked 1450 onto the end of the args in some (at least one anyway) 1451 implementations, so strip it off if it exists. */ 1452 1453 { 1454 char *command = elf_tdata (abfd)->core_command; 1455 int n = strlen (command); 1456 1457 if (0 < n && command[n - 1] == ' ') 1458 command[n - 1] = '\0'; 1459 } 1460 1461 return TRUE; 1462} 1463 1464/* Depending on the target vector we generate some version of Irix 1465 executables or "normal" MIPS ELF ABI executables. */ 1466static irix_compat_t 1467elf32_mips_irix_compat (bfd *abfd) 1468{ 1469 if ((abfd->xvec == &bfd_elf32_bigmips_vec) 1470 || (abfd->xvec == &bfd_elf32_littlemips_vec)) 1471 return ict_irix5; 1472 else 1473 return ict_none; 1474} 1475 1476/* ECOFF swapping routines. These are used when dealing with the 1477 .mdebug section, which is in the ECOFF debugging format. */ 1478static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = { 1479 /* Symbol table magic number. */ 1480 magicSym, 1481 /* Alignment of debugging information. E.g., 4. */ 1482 4, 1483 /* Sizes of external symbolic information. */ 1484 sizeof (struct hdr_ext), 1485 sizeof (struct dnr_ext), 1486 sizeof (struct pdr_ext), 1487 sizeof (struct sym_ext), 1488 sizeof (struct opt_ext), 1489 sizeof (struct fdr_ext), 1490 sizeof (struct rfd_ext), 1491 sizeof (struct ext_ext), 1492 /* Functions to swap in external symbolic data. */ 1493 ecoff_swap_hdr_in, 1494 ecoff_swap_dnr_in, 1495 ecoff_swap_pdr_in, 1496 ecoff_swap_sym_in, 1497 ecoff_swap_opt_in, 1498 ecoff_swap_fdr_in, 1499 ecoff_swap_rfd_in, 1500 ecoff_swap_ext_in, 1501 _bfd_ecoff_swap_tir_in, 1502 _bfd_ecoff_swap_rndx_in, 1503 /* Functions to swap out external symbolic data. */ 1504 ecoff_swap_hdr_out, 1505 ecoff_swap_dnr_out, 1506 ecoff_swap_pdr_out, 1507 ecoff_swap_sym_out, 1508 ecoff_swap_opt_out, 1509 ecoff_swap_fdr_out, 1510 ecoff_swap_rfd_out, 1511 ecoff_swap_ext_out, 1512 _bfd_ecoff_swap_tir_out, 1513 _bfd_ecoff_swap_rndx_out, 1514 /* Function to read in symbolic data. */ 1515 _bfd_mips_elf_read_ecoff_info 1516}; 1517 1518#define ELF_ARCH bfd_arch_mips 1519#define ELF_MACHINE_CODE EM_MIPS 1520 1521#define elf_backend_collect TRUE 1522#define elf_backend_type_change_ok TRUE 1523#define elf_backend_can_gc_sections TRUE 1524#define elf_info_to_howto mips_info_to_howto_rela 1525#define elf_info_to_howto_rel mips_info_to_howto_rel 1526#define elf_backend_sym_is_global mips_elf_sym_is_global 1527#define elf_backend_object_p mips_elf32_object_p 1528#define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing 1529#define elf_backend_section_processing _bfd_mips_elf_section_processing 1530#define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr 1531#define elf_backend_fake_sections _bfd_mips_elf_fake_sections 1532#define elf_backend_section_from_bfd_section \ 1533 _bfd_mips_elf_section_from_bfd_section 1534#define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook 1535#define elf_backend_link_output_symbol_hook \ 1536 _bfd_mips_elf_link_output_symbol_hook 1537#define elf_backend_create_dynamic_sections \ 1538 _bfd_mips_elf_create_dynamic_sections 1539#define elf_backend_check_relocs _bfd_mips_elf_check_relocs 1540#define elf_backend_adjust_dynamic_symbol \ 1541 _bfd_mips_elf_adjust_dynamic_symbol 1542#define elf_backend_always_size_sections \ 1543 _bfd_mips_elf_always_size_sections 1544#define elf_backend_size_dynamic_sections \ 1545 _bfd_mips_elf_size_dynamic_sections 1546#define elf_backend_relocate_section _bfd_mips_elf_relocate_section 1547#define elf_backend_finish_dynamic_symbol \ 1548 _bfd_mips_elf_finish_dynamic_symbol 1549#define elf_backend_finish_dynamic_sections \ 1550 _bfd_mips_elf_finish_dynamic_sections 1551#define elf_backend_final_write_processing \ 1552 _bfd_mips_elf_final_write_processing 1553#define elf_backend_additional_program_headers \ 1554 _bfd_mips_elf_additional_program_headers 1555#define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map 1556#define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook 1557#define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook 1558#define elf_backend_copy_indirect_symbol \ 1559 _bfd_mips_elf_copy_indirect_symbol 1560#define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol 1561#define elf_backend_grok_prstatus elf32_mips_grok_prstatus 1562#define elf_backend_grok_psinfo elf32_mips_grok_psinfo 1563#define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap 1564 1565#define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO) 1566#define elf_backend_may_use_rel_p 1 1567#define elf_backend_may_use_rela_p 0 1568#define elf_backend_default_use_rela_p 0 1569#define elf_backend_sign_extend_vma TRUE 1570 1571#define elf_backend_discard_info _bfd_mips_elf_discard_info 1572#define elf_backend_ignore_discarded_relocs \ 1573 _bfd_mips_elf_ignore_discarded_relocs 1574#define elf_backend_mips_irix_compat elf32_mips_irix_compat 1575#define elf_backend_mips_rtype_to_howto mips_elf32_rtype_to_howto 1576#define bfd_elf32_bfd_is_local_label_name \ 1577 mips_elf_is_local_label_name 1578#define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line 1579#define bfd_elf32_find_inliner_info _bfd_mips_elf_find_inliner_info 1580#define bfd_elf32_new_section_hook _bfd_mips_elf_new_section_hook 1581#define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents 1582#define bfd_elf32_bfd_get_relocated_section_contents \ 1583 _bfd_elf_mips_get_relocated_section_contents 1584#define bfd_elf32_bfd_link_hash_table_create \ 1585 _bfd_mips_elf_link_hash_table_create 1586#define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link 1587#define bfd_elf32_bfd_merge_private_bfd_data \ 1588 _bfd_mips_elf_merge_private_bfd_data 1589#define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags 1590#define bfd_elf32_bfd_print_private_bfd_data \ 1591 _bfd_mips_elf_print_private_bfd_data 1592 1593/* Support for SGI-ish mips targets. */ 1594#define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec 1595#define TARGET_LITTLE_NAME "elf32-littlemips" 1596#define TARGET_BIG_SYM bfd_elf32_bigmips_vec 1597#define TARGET_BIG_NAME "elf32-bigmips" 1598 1599/* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses 1600 a value of 0x1000, and we are compatible. */ 1601#define ELF_MAXPAGESIZE 0x1000 1602 1603#include "elf32-target.h" 1604 1605/* Support for traditional mips targets. */ 1606#undef TARGET_LITTLE_SYM 1607#undef TARGET_LITTLE_NAME 1608#undef TARGET_BIG_SYM 1609#undef TARGET_BIG_NAME 1610 1611#undef ELF_MAXPAGESIZE 1612 1613#define TARGET_LITTLE_SYM bfd_elf32_tradlittlemips_vec 1614#define TARGET_LITTLE_NAME "elf32-tradlittlemips" 1615#define TARGET_BIG_SYM bfd_elf32_tradbigmips_vec 1616#define TARGET_BIG_NAME "elf32-tradbigmips" 1617 1618/* The SVR4 MIPS ABI says that this should be 0x10000, and Linux uses 1619 page sizes of up to that limit, so we need to respect it. */ 1620#define ELF_MAXPAGESIZE 0x10000 1621#define elf32_bed elf32_tradbed 1622 1623/* Include the target file again for this target. */ 1624#include "elf32-target.h" 1625 1626 1627/* Specific to VxWorks. */ 1628static reloc_howto_type mips_vxworks_copy_howto_rela = 1629 HOWTO (R_MIPS_COPY, /* type */ 1630 0, /* rightshift */ 1631 2, /* size (0 = byte, 1 = short, 2 = long) */ 1632 32, /* bitsize */ 1633 FALSE, /* pc_relative */ 1634 0, /* bitpos */ 1635 complain_overflow_bitfield, /* complain_on_overflow */ 1636 bfd_elf_generic_reloc, /* special_function */ 1637 "R_MIPS_COPY", /* name */ 1638 FALSE, /* partial_inplace */ 1639 0x0, /* src_mask */ 1640 0x0, /* dst_mask */ 1641 FALSE); /* pcrel_offset */ 1642 1643/* Specific to VxWorks. */ 1644static reloc_howto_type mips_vxworks_jump_slot_howto_rela = 1645 HOWTO (R_MIPS_JUMP_SLOT, /* type */ 1646 0, /* rightshift */ 1647 2, /* size (0 = byte, 1 = short, 2 = long) */ 1648 32, /* bitsize */ 1649 FALSE, /* pc_relative */ 1650 0, /* bitpos */ 1651 complain_overflow_bitfield, /* complain_on_overflow */ 1652 bfd_elf_generic_reloc, /* special_function */ 1653 "R_MIPS_JUMP_SLOT", /* name */ 1654 FALSE, /* partial_inplace */ 1655 0x0, /* src_mask */ 1656 0x0, /* dst_mask */ 1657 FALSE); /* pcrel_offset */ 1658 1659/* Implement elf_backend_bfd_reloc_type_lookup for VxWorks. */ 1660 1661static reloc_howto_type * 1662mips_vxworks_bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code) 1663{ 1664 switch (code) 1665 { 1666 case BFD_RELOC_MIPS_COPY: 1667 return &mips_vxworks_copy_howto_rela; 1668 case BFD_RELOC_MIPS_JUMP_SLOT: 1669 return &mips_vxworks_jump_slot_howto_rela; 1670 default: 1671 return bfd_elf32_bfd_reloc_type_lookup (abfd, code); 1672 } 1673} 1674 1675/* Implement elf_backend_mips_rtype_to_lookup for VxWorks. */ 1676 1677static reloc_howto_type * 1678mips_vxworks_rtype_to_howto (unsigned int r_type, bfd_boolean rela_p) 1679{ 1680 switch (r_type) 1681 { 1682 case R_MIPS_COPY: 1683 return &mips_vxworks_copy_howto_rela; 1684 case R_MIPS_JUMP_SLOT: 1685 return &mips_vxworks_jump_slot_howto_rela; 1686 default: 1687 return mips_elf32_rtype_to_howto (r_type, rela_p); 1688 } 1689} 1690 1691/* Implement elf_backend_final_write_processing for VxWorks. */ 1692 1693static void 1694mips_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) 1695{ 1696 _bfd_mips_elf_final_write_processing (abfd, linker); 1697 elf_vxworks_final_write_processing (abfd, linker); 1698} 1699 1700#undef TARGET_LITTLE_SYM 1701#undef TARGET_LITTLE_NAME 1702#undef TARGET_BIG_SYM 1703#undef TARGET_BIG_NAME 1704 1705#define TARGET_LITTLE_SYM bfd_elf32_littlemips_vxworks_vec 1706#define TARGET_LITTLE_NAME "elf32-littlemips-vxworks" 1707#define TARGET_BIG_SYM bfd_elf32_bigmips_vxworks_vec 1708#define TARGET_BIG_NAME "elf32-bigmips-vxworks" 1709 1710#undef elf32_bed 1711#define elf32_bed elf32_mips_vxworks_bed 1712 1713#undef ELF_MAXPAGESIZE 1714#define ELF_MAXPAGESIZE 0x1000 1715 1716#undef elf_backend_want_got_plt 1717#define elf_backend_want_got_plt 1 1718#undef elf_backend_want_plt_sym 1719#define elf_backend_want_plt_sym 1 1720#undef elf_backend_got_symbol_offset 1721#define elf_backend_got_symbol_offset 0 1722#undef elf_backend_want_dynbss 1723#define elf_backend_want_dynbss 1 1724#undef elf_backend_may_use_rel_p 1725#define elf_backend_may_use_rel_p 0 1726#undef elf_backend_may_use_rela_p 1727#define elf_backend_may_use_rela_p 1 1728#undef elf_backend_default_use_rela_p 1729#define elf_backend_default_use_rela_p 1 1730#undef elf_backend_got_header_size 1731#define elf_backend_got_header_size (4 * 3) 1732#undef elf_backend_plt_readonly 1733#define elf_backend_plt_readonly 1 1734 1735#undef bfd_elf32_bfd_reloc_type_lookup 1736#define bfd_elf32_bfd_reloc_type_lookup \ 1737 mips_vxworks_bfd_reloc_type_lookup 1738#undef elf_backend_mips_rtype_to_howto 1739#define elf_backend_mips_rtype_to_howto \ 1740 mips_vxworks_rtype_to_howto 1741#undef elf_backend_adjust_dynamic_symbol 1742#define elf_backend_adjust_dynamic_symbol \ 1743 _bfd_mips_vxworks_adjust_dynamic_symbol 1744#undef elf_backend_finish_dynamic_symbol 1745#define elf_backend_finish_dynamic_symbol \ 1746 _bfd_mips_vxworks_finish_dynamic_symbol 1747#undef bfd_elf32_bfd_link_hash_table_create 1748#define bfd_elf32_bfd_link_hash_table_create \ 1749 _bfd_mips_vxworks_link_hash_table_create 1750#undef elf_backend_add_symbol_hook 1751#define elf_backend_add_symbol_hook \ 1752 elf_vxworks_add_symbol_hook 1753#undef elf_backend_link_output_symbol_hook 1754#define elf_backend_link_output_symbol_hook \ 1755 elf_vxworks_link_output_symbol_hook 1756#undef elf_backend_emit_relocs 1757#define elf_backend_emit_relocs \ 1758 elf_vxworks_emit_relocs 1759#undef elf_backend_final_write_processing 1760#define elf_backend_final_write_processing \ 1761 mips_vxworks_final_write_processing 1762 1763#undef elf_backend_additional_program_headers 1764#undef elf_backend_modify_segment_map 1765#undef elf_backend_symbol_processing 1766/* NOTE: elf_backend_rela_normal is not defined for MIPS. */ 1767 1768#include "elf32-target.h" 1769