1/* MIPS-specific support for 32-bit ELF 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 3 2003, 2004, 2005, 2006, 2007, 2008, 2009 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 12 This file is part of BFD, the Binary File Descriptor library. 13 14 This program is free software; you can redistribute it and/or modify 15 it under the terms of the GNU General Public License as published by 16 the Free Software Foundation; either version 3 of the License, or 17 (at your option) any later version. 18 19 This program is distributed in the hope that it will be useful, 20 but WITHOUT ANY WARRANTY; without even the implied warranty of 21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 GNU General Public License for more details. 23 24 You should have received a copy of the GNU General Public License 25 along with this program; if not, write to the Free Software 26 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 27 MA 02110-1301, USA. */ 28 29 30/* This file handles MIPS ELF targets. SGI Irix 5 uses a slightly 31 different MIPS ELF from other targets. This matters when linking. 32 This file supports both, switching at runtime. */ 33 34#include "sysdep.h" 35#include "bfd.h" 36#include "libbfd.h" 37#include "bfdlink.h" 38#include "genlink.h" 39#include "elf-bfd.h" 40#include "elfxx-mips.h" 41#include "elf/mips.h" 42#include "elf-vxworks.h" 43 44/* Get the ECOFF swapping routines. */ 45#include "coff/sym.h" 46#include "coff/symconst.h" 47#include "coff/internal.h" 48#include "coff/ecoff.h" 49#include "coff/mips.h" 50#define ECOFF_SIGNED_32 51#include "ecoffswap.h" 52 53static bfd_reloc_status_type gprel32_with_gp 54 (bfd *, asymbol *, arelent *, asection *, bfd_boolean, void *, bfd_vma); 55static bfd_reloc_status_type mips_elf_gprel32_reloc 56 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 57static bfd_reloc_status_type mips32_64bit_reloc 58 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 59static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup 60 (bfd *, bfd_reloc_code_real_type); 61static reloc_howto_type *mips_elf32_rtype_to_howto 62 (unsigned int, bfd_boolean); 63static void mips_info_to_howto_rel 64 (bfd *, arelent *, Elf_Internal_Rela *); 65static void mips_info_to_howto_rela 66 (bfd *, arelent *, Elf_Internal_Rela *); 67static bfd_boolean mips_elf_sym_is_global 68 (bfd *, asymbol *); 69static bfd_boolean mips_elf32_object_p 70 (bfd *); 71static bfd_boolean mips_elf_is_local_label_name 72 (bfd *, const 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 /* 32 bit relocation with no addend. */ 707 HOWTO (R_MIPS_GLOB_DAT, /* type */ 708 0, /* rightshift */ 709 2, /* size (0 = byte, 1 = short, 2 = long) */ 710 32, /* bitsize */ 711 FALSE, /* pc_relative */ 712 0, /* bitpos */ 713 complain_overflow_dont, /* complain_on_overflow */ 714 _bfd_mips_elf_generic_reloc, /* special_function */ 715 "R_MIPS_GLOB_DAT", /* name */ 716 FALSE, /* partial_inplace */ 717 0x0, /* src_mask */ 718 0xffffffff, /* dst_mask */ 719 FALSE), /* pcrel_offset */ 720}; 721 722/* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This 723 is a hack to make the linker think that we need 64 bit values. */ 724static reloc_howto_type elf_mips_ctor64_howto = 725 HOWTO (R_MIPS_64, /* type */ 726 0, /* rightshift */ 727 4, /* size (0 = byte, 1 = short, 2 = long) */ 728 32, /* bitsize */ 729 FALSE, /* pc_relative */ 730 0, /* bitpos */ 731 complain_overflow_signed, /* complain_on_overflow */ 732 mips32_64bit_reloc, /* special_function */ 733 "R_MIPS_64", /* name */ 734 TRUE, /* partial_inplace */ 735 0xffffffff, /* src_mask */ 736 0xffffffff, /* dst_mask */ 737 FALSE); /* pcrel_offset */ 738 739static reloc_howto_type elf_mips16_howto_table_rel[] = 740{ 741 /* The reloc used for the mips16 jump instruction. */ 742 HOWTO (R_MIPS16_26, /* type */ 743 2, /* rightshift */ 744 2, /* size (0 = byte, 1 = short, 2 = long) */ 745 26, /* bitsize */ 746 FALSE, /* pc_relative */ 747 0, /* bitpos */ 748 complain_overflow_dont, /* complain_on_overflow */ 749 /* This needs complex overflow 750 detection, because the upper four 751 bits must match the PC. */ 752 _bfd_mips_elf_generic_reloc, /* special_function */ 753 "R_MIPS16_26", /* name */ 754 TRUE, /* partial_inplace */ 755 0x3ffffff, /* src_mask */ 756 0x3ffffff, /* dst_mask */ 757 FALSE), /* pcrel_offset */ 758 759 /* The reloc used for the mips16 gprel instruction. */ 760 HOWTO (R_MIPS16_GPREL, /* type */ 761 0, /* rightshift */ 762 2, /* size (0 = byte, 1 = short, 2 = long) */ 763 16, /* bitsize */ 764 FALSE, /* pc_relative */ 765 0, /* bitpos */ 766 complain_overflow_signed, /* complain_on_overflow */ 767 mips16_gprel_reloc, /* special_function */ 768 "R_MIPS16_GPREL", /* name */ 769 TRUE, /* partial_inplace */ 770 0x0000ffff, /* src_mask */ 771 0x0000ffff, /* dst_mask */ 772 FALSE), /* pcrel_offset */ 773 774 /* A MIPS16 reference to the global offset table. */ 775 HOWTO (R_MIPS16_GOT16, /* type */ 776 0, /* rightshift */ 777 2, /* size (0 = byte, 1 = short, 2 = long) */ 778 16, /* bitsize */ 779 FALSE, /* pc_relative */ 780 0, /* bitpos */ 781 complain_overflow_dont, /* complain_on_overflow */ 782 _bfd_mips_elf_got16_reloc, /* special_function */ 783 "R_MIPS16_GOT16", /* name */ 784 TRUE, /* partial_inplace */ 785 0x0000ffff, /* src_mask */ 786 0x0000ffff, /* dst_mask */ 787 FALSE), /* pcrel_offset */ 788 789 /* A MIPS16 call through the global offset table. */ 790 HOWTO (R_MIPS16_CALL16, /* type */ 791 0, /* rightshift */ 792 2, /* size (0 = byte, 1 = short, 2 = long) */ 793 16, /* bitsize */ 794 FALSE, /* pc_relative */ 795 0, /* bitpos */ 796 complain_overflow_dont, /* complain_on_overflow */ 797 _bfd_mips_elf_generic_reloc, /* special_function */ 798 "R_MIPS16_CALL16", /* name */ 799 TRUE, /* partial_inplace */ 800 0x0000ffff, /* src_mask */ 801 0x0000ffff, /* dst_mask */ 802 FALSE), /* pcrel_offset */ 803 804 /* MIPS16 high 16 bits of symbol value. */ 805 HOWTO (R_MIPS16_HI16, /* type */ 806 16, /* rightshift */ 807 2, /* size (0 = byte, 1 = short, 2 = long) */ 808 16, /* bitsize */ 809 FALSE, /* pc_relative */ 810 0, /* bitpos */ 811 complain_overflow_dont, /* complain_on_overflow */ 812 _bfd_mips_elf_hi16_reloc, /* special_function */ 813 "R_MIPS16_HI16", /* name */ 814 TRUE, /* partial_inplace */ 815 0x0000ffff, /* src_mask */ 816 0x0000ffff, /* dst_mask */ 817 FALSE), /* pcrel_offset */ 818 819 /* MIPS16 low 16 bits of symbol value. */ 820 HOWTO (R_MIPS16_LO16, /* type */ 821 0, /* rightshift */ 822 2, /* size (0 = byte, 1 = short, 2 = long) */ 823 16, /* bitsize */ 824 FALSE, /* pc_relative */ 825 0, /* bitpos */ 826 complain_overflow_dont, /* complain_on_overflow */ 827 _bfd_mips_elf_lo16_reloc, /* special_function */ 828 "R_MIPS16_LO16", /* name */ 829 TRUE, /* partial_inplace */ 830 0x0000ffff, /* src_mask */ 831 0x0000ffff, /* dst_mask */ 832 FALSE), /* pcrel_offset */ 833}; 834 835/* 16 bit offset for pc-relative branches. */ 836static reloc_howto_type elf_mips_gnu_rel16_s2 = 837 HOWTO (R_MIPS_GNU_REL16_S2, /* type */ 838 2, /* rightshift */ 839 2, /* size (0 = byte, 1 = short, 2 = long) */ 840 16, /* bitsize */ 841 TRUE, /* pc_relative */ 842 0, /* bitpos */ 843 complain_overflow_signed, /* complain_on_overflow */ 844 _bfd_mips_elf_generic_reloc, /* special_function */ 845 "R_MIPS_GNU_REL16_S2", /* name */ 846 TRUE, /* partial_inplace */ 847 0xffff, /* src_mask */ 848 0xffff, /* dst_mask */ 849 TRUE); /* pcrel_offset */ 850 851/* 32 bit pc-relative. This was a GNU extension used by embedded-PIC. 852 It was co-opted by mips-linux for exception-handling data. It is no 853 longer used, but should continue to be supported by the linker for 854 backward compatibility. (GCC stopped using it in May, 2004.) */ 855static reloc_howto_type elf_mips_gnu_pcrel32 = 856 HOWTO (R_MIPS_PC32, /* type */ 857 0, /* rightshift */ 858 2, /* size (0 = byte, 1 = short, 2 = long) */ 859 32, /* bitsize */ 860 TRUE, /* pc_relative */ 861 0, /* bitpos */ 862 complain_overflow_signed, /* complain_on_overflow */ 863 _bfd_mips_elf_generic_reloc, /* special_function */ 864 "R_MIPS_PC32", /* name */ 865 TRUE, /* partial_inplace */ 866 0xffffffff, /* src_mask */ 867 0xffffffff, /* dst_mask */ 868 TRUE); /* pcrel_offset */ 869 870/* GNU extension to record C++ vtable hierarchy */ 871static reloc_howto_type elf_mips_gnu_vtinherit_howto = 872 HOWTO (R_MIPS_GNU_VTINHERIT, /* type */ 873 0, /* rightshift */ 874 2, /* size (0 = byte, 1 = short, 2 = long) */ 875 0, /* bitsize */ 876 FALSE, /* pc_relative */ 877 0, /* bitpos */ 878 complain_overflow_dont, /* complain_on_overflow */ 879 NULL, /* special_function */ 880 "R_MIPS_GNU_VTINHERIT", /* name */ 881 FALSE, /* partial_inplace */ 882 0, /* src_mask */ 883 0, /* dst_mask */ 884 FALSE); /* pcrel_offset */ 885 886/* GNU extension to record C++ vtable member usage */ 887static reloc_howto_type elf_mips_gnu_vtentry_howto = 888 HOWTO (R_MIPS_GNU_VTENTRY, /* type */ 889 0, /* rightshift */ 890 2, /* size (0 = byte, 1 = short, 2 = long) */ 891 0, /* bitsize */ 892 FALSE, /* pc_relative */ 893 0, /* bitpos */ 894 complain_overflow_dont, /* complain_on_overflow */ 895 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 896 "R_MIPS_GNU_VTENTRY", /* name */ 897 FALSE, /* partial_inplace */ 898 0, /* src_mask */ 899 0, /* dst_mask */ 900 FALSE); /* pcrel_offset */ 901 902/* Originally a VxWorks extension, but now used for other systems too. */ 903static reloc_howto_type elf_mips_copy_howto = 904 HOWTO (R_MIPS_COPY, /* type */ 905 0, /* rightshift */ 906 0, /* this one is variable size */ 907 0, /* bitsize */ 908 FALSE, /* pc_relative */ 909 0, /* bitpos */ 910 complain_overflow_bitfield, /* complain_on_overflow */ 911 bfd_elf_generic_reloc, /* special_function */ 912 "R_MIPS_COPY", /* name */ 913 FALSE, /* partial_inplace */ 914 0x0, /* src_mask */ 915 0x0, /* dst_mask */ 916 FALSE); /* pcrel_offset */ 917 918/* Originally a VxWorks extension, but now used for other systems too. */ 919static reloc_howto_type elf_mips_jump_slot_howto = 920 HOWTO (R_MIPS_JUMP_SLOT, /* type */ 921 0, /* rightshift */ 922 2, /* size (0 = byte, 1 = short, 2 = long) */ 923 32, /* bitsize */ 924 FALSE, /* pc_relative */ 925 0, /* bitpos */ 926 complain_overflow_bitfield, /* complain_on_overflow */ 927 bfd_elf_generic_reloc, /* special_function */ 928 "R_MIPS_JUMP_SLOT", /* name */ 929 FALSE, /* partial_inplace */ 930 0x0, /* src_mask */ 931 0x0, /* dst_mask */ 932 FALSE); /* pcrel_offset */ 933 934/* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a 935 dangerous relocation. */ 936 937static bfd_boolean 938mips_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp) 939{ 940 unsigned int count; 941 asymbol **sym; 942 unsigned int i; 943 944 /* If we've already figured out what GP will be, just return it. */ 945 *pgp = _bfd_get_gp_value (output_bfd); 946 if (*pgp) 947 return TRUE; 948 949 count = bfd_get_symcount (output_bfd); 950 sym = bfd_get_outsymbols (output_bfd); 951 952 /* The linker script will have created a symbol named `_gp' with the 953 appropriate value. */ 954 if (sym == NULL) 955 i = count; 956 else 957 { 958 for (i = 0; i < count; i++, sym++) 959 { 960 register const char *name; 961 962 name = bfd_asymbol_name (*sym); 963 if (*name == '_' && strcmp (name, "_gp") == 0) 964 { 965 *pgp = bfd_asymbol_value (*sym); 966 _bfd_set_gp_value (output_bfd, *pgp); 967 break; 968 } 969 } 970 } 971 972 if (i >= count) 973 { 974 /* Only get the error once. */ 975 *pgp = 4; 976 _bfd_set_gp_value (output_bfd, *pgp); 977 return FALSE; 978 } 979 980 return TRUE; 981} 982 983/* We have to figure out the gp value, so that we can adjust the 984 symbol value correctly. We look up the symbol _gp in the output 985 BFD. If we can't find it, we're stuck. We cache it in the ELF 986 target data. We don't need to adjust the symbol value for an 987 external symbol if we are producing relocatable output. */ 988 989static bfd_reloc_status_type 990mips_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable, 991 char **error_message, bfd_vma *pgp) 992{ 993 if (bfd_is_und_section (symbol->section) 994 && ! relocatable) 995 { 996 *pgp = 0; 997 return bfd_reloc_undefined; 998 } 999 1000 *pgp = _bfd_get_gp_value (output_bfd); 1001 if (*pgp == 0 1002 && (! relocatable 1003 || (symbol->flags & BSF_SECTION_SYM) != 0)) 1004 { 1005 if (relocatable) 1006 { 1007 /* Make up a value. */ 1008 *pgp = symbol->section->output_section->vma /*+ 0x4000*/; 1009 _bfd_set_gp_value (output_bfd, *pgp); 1010 } 1011 else if (!mips_elf_assign_gp (output_bfd, pgp)) 1012 { 1013 *error_message = 1014 (char *) _("GP relative relocation when _gp not defined"); 1015 return bfd_reloc_dangerous; 1016 } 1017 } 1018 1019 return bfd_reloc_ok; 1020} 1021 1022/* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must 1023 become the offset from the gp register. This function also handles 1024 R_MIPS_LITERAL relocations, although those can be handled more 1025 cleverly because the entries in the .lit8 and .lit4 sections can be 1026 merged. */ 1027 1028bfd_reloc_status_type 1029_bfd_mips_elf32_gprel16_reloc (bfd *abfd, arelent *reloc_entry, 1030 asymbol *symbol, void *data, 1031 asection *input_section, bfd *output_bfd, 1032 char **error_message) 1033{ 1034 bfd_boolean relocatable; 1035 bfd_reloc_status_type ret; 1036 bfd_vma gp; 1037 1038 /* R_MIPS_LITERAL relocations are defined for local symbols only. */ 1039 if (reloc_entry->howto->type == R_MIPS_LITERAL 1040 && output_bfd != NULL 1041 && (symbol->flags & BSF_SECTION_SYM) == 0 1042 && (symbol->flags & BSF_LOCAL) != 0) 1043 { 1044 *error_message = (char *) 1045 _("literal relocation occurs for an external symbol"); 1046 return bfd_reloc_outofrange; 1047 } 1048 1049 if (output_bfd != NULL) 1050 relocatable = TRUE; 1051 else 1052 { 1053 relocatable = FALSE; 1054 output_bfd = symbol->section->output_section->owner; 1055 } 1056 1057 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message, 1058 &gp); 1059 if (ret != bfd_reloc_ok) 1060 return ret; 1061 1062 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, 1063 input_section, relocatable, 1064 data, gp); 1065} 1066 1067/* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must 1068 become the offset from the gp register. */ 1069 1070static bfd_reloc_status_type 1071mips_elf_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 1072 void *data, asection *input_section, bfd *output_bfd, 1073 char **error_message) 1074{ 1075 bfd_boolean relocatable; 1076 bfd_reloc_status_type ret; 1077 bfd_vma gp; 1078 1079 /* R_MIPS_GPREL32 relocations are defined for local symbols only. */ 1080 if (output_bfd != NULL 1081 && (symbol->flags & BSF_SECTION_SYM) == 0 1082 && (symbol->flags & BSF_LOCAL) != 0) 1083 { 1084 *error_message = (char *) 1085 _("32bits gp relative relocation occurs for an external symbol"); 1086 return bfd_reloc_outofrange; 1087 } 1088 1089 if (output_bfd != NULL) 1090 relocatable = TRUE; 1091 else 1092 { 1093 relocatable = FALSE; 1094 output_bfd = symbol->section->output_section->owner; 1095 } 1096 1097 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, 1098 error_message, &gp); 1099 if (ret != bfd_reloc_ok) 1100 return ret; 1101 1102 return gprel32_with_gp (abfd, symbol, reloc_entry, input_section, 1103 relocatable, data, gp); 1104} 1105 1106static bfd_reloc_status_type 1107gprel32_with_gp (bfd *abfd, asymbol *symbol, arelent *reloc_entry, 1108 asection *input_section, bfd_boolean relocatable, 1109 void *data, bfd_vma gp) 1110{ 1111 bfd_vma relocation; 1112 bfd_vma val; 1113 1114 if (bfd_is_com_section (symbol->section)) 1115 relocation = 0; 1116 else 1117 relocation = symbol->value; 1118 1119 relocation += symbol->section->output_section->vma; 1120 relocation += symbol->section->output_offset; 1121 1122 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) 1123 return bfd_reloc_outofrange; 1124 1125 /* Set val to the offset into the section or symbol. */ 1126 val = reloc_entry->addend; 1127 1128 if (reloc_entry->howto->partial_inplace) 1129 val += bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 1130 1131 /* Adjust val for the final section location and GP value. If we 1132 are producing relocatable output, we don't want to do this for 1133 an external symbol. */ 1134 if (! relocatable 1135 || (symbol->flags & BSF_SECTION_SYM) != 0) 1136 val += relocation - gp; 1137 1138 if (reloc_entry->howto->partial_inplace) 1139 bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address); 1140 else 1141 reloc_entry->addend = val; 1142 1143 if (relocatable) 1144 reloc_entry->address += input_section->output_offset; 1145 1146 return bfd_reloc_ok; 1147} 1148 1149/* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are 1150 generated when addresses are 64 bits. The upper 32 bits are a simple 1151 sign extension. */ 1152 1153static bfd_reloc_status_type 1154mips32_64bit_reloc (bfd *abfd, arelent *reloc_entry, 1155 asymbol *symbol ATTRIBUTE_UNUSED, 1156 void *data, asection *input_section, 1157 bfd *output_bfd, char **error_message) 1158{ 1159 bfd_reloc_status_type r; 1160 arelent reloc32; 1161 unsigned long val; 1162 bfd_size_type addr; 1163 1164 /* Do a normal 32 bit relocation on the lower 32 bits. */ 1165 reloc32 = *reloc_entry; 1166 if (bfd_big_endian (abfd)) 1167 reloc32.address += 4; 1168 reloc32.howto = &elf_mips_howto_table_rel[R_MIPS_32]; 1169 r = bfd_perform_relocation (abfd, &reloc32, data, input_section, 1170 output_bfd, error_message); 1171 1172 /* Sign extend into the upper 32 bits. */ 1173 val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address); 1174 if ((val & 0x80000000) != 0) 1175 val = 0xffffffff; 1176 else 1177 val = 0; 1178 addr = reloc_entry->address; 1179 if (bfd_little_endian (abfd)) 1180 addr += 4; 1181 bfd_put_32 (abfd, val, (bfd_byte *) data + addr); 1182 1183 return r; 1184} 1185 1186/* Handle a mips16 GP relative reloc. */ 1187 1188static bfd_reloc_status_type 1189mips16_gprel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 1190 void *data, asection *input_section, bfd *output_bfd, 1191 char **error_message) 1192{ 1193 bfd_boolean relocatable; 1194 bfd_reloc_status_type ret; 1195 bfd_byte *location; 1196 bfd_vma gp; 1197 1198 /* If we're relocating, and this is an external symbol, we don't want 1199 to change anything. */ 1200 if (output_bfd != NULL 1201 && (symbol->flags & BSF_SECTION_SYM) == 0 1202 && (symbol->flags & BSF_LOCAL) != 0) 1203 { 1204 reloc_entry->address += input_section->output_offset; 1205 return bfd_reloc_ok; 1206 } 1207 1208 if (output_bfd != NULL) 1209 relocatable = TRUE; 1210 else 1211 { 1212 relocatable = FALSE; 1213 output_bfd = symbol->section->output_section->owner; 1214 } 1215 1216 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message, 1217 &gp); 1218 if (ret != bfd_reloc_ok) 1219 return ret; 1220 1221 location = (bfd_byte *) data + reloc_entry->address; 1222 _bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE, 1223 location); 1224 ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, 1225 input_section, relocatable, 1226 data, gp); 1227 _bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, !relocatable, 1228 location); 1229 1230 return ret; 1231} 1232 1233/* A mapping from BFD reloc types to MIPS ELF reloc types. */ 1234 1235struct elf_reloc_map { 1236 bfd_reloc_code_real_type bfd_val; 1237 enum elf_mips_reloc_type elf_val; 1238}; 1239 1240static const struct elf_reloc_map mips_reloc_map[] = 1241{ 1242 { BFD_RELOC_NONE, R_MIPS_NONE }, 1243 { BFD_RELOC_16, R_MIPS_16 }, 1244 { BFD_RELOC_32, R_MIPS_32 }, 1245 /* There is no BFD reloc for R_MIPS_REL32. */ 1246 { BFD_RELOC_64, R_MIPS_64 }, 1247 { BFD_RELOC_MIPS_JMP, R_MIPS_26 }, 1248 { BFD_RELOC_HI16_S, R_MIPS_HI16 }, 1249 { BFD_RELOC_LO16, R_MIPS_LO16 }, 1250 { BFD_RELOC_GPREL16, R_MIPS_GPREL16 }, 1251 { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL }, 1252 { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 }, 1253 { BFD_RELOC_16_PCREL_S2, R_MIPS_PC16 }, 1254 { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 }, 1255 { BFD_RELOC_GPREL32, R_MIPS_GPREL32 }, 1256 { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 }, 1257 { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 }, 1258 { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 }, 1259 { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 }, 1260 { BFD_RELOC_MIPS_SUB, R_MIPS_SUB }, 1261 { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE }, 1262 { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST }, 1263 { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP }, 1264 { BFD_RELOC_MIPS_JALR, R_MIPS_JALR }, 1265 { BFD_RELOC_MIPS_TLS_DTPMOD32, R_MIPS_TLS_DTPMOD32 }, 1266 { BFD_RELOC_MIPS_TLS_DTPREL32, R_MIPS_TLS_DTPREL32 }, 1267 { BFD_RELOC_MIPS_TLS_DTPMOD64, R_MIPS_TLS_DTPMOD64 }, 1268 { BFD_RELOC_MIPS_TLS_DTPREL64, R_MIPS_TLS_DTPREL64 }, 1269 { BFD_RELOC_MIPS_TLS_GD, R_MIPS_TLS_GD }, 1270 { BFD_RELOC_MIPS_TLS_LDM, R_MIPS_TLS_LDM }, 1271 { BFD_RELOC_MIPS_TLS_DTPREL_HI16, R_MIPS_TLS_DTPREL_HI16 }, 1272 { BFD_RELOC_MIPS_TLS_DTPREL_LO16, R_MIPS_TLS_DTPREL_LO16 }, 1273 { BFD_RELOC_MIPS_TLS_GOTTPREL, R_MIPS_TLS_GOTTPREL }, 1274 { BFD_RELOC_MIPS_TLS_TPREL32, R_MIPS_TLS_TPREL32 }, 1275 { BFD_RELOC_MIPS_TLS_TPREL64, R_MIPS_TLS_TPREL64 }, 1276 { BFD_RELOC_MIPS_TLS_TPREL_HI16, R_MIPS_TLS_TPREL_HI16 }, 1277 { BFD_RELOC_MIPS_TLS_TPREL_LO16, R_MIPS_TLS_TPREL_LO16 } 1278}; 1279 1280static const struct elf_reloc_map mips16_reloc_map[] = 1281{ 1282 { BFD_RELOC_MIPS16_JMP, R_MIPS16_26 - R_MIPS16_min }, 1283 { BFD_RELOC_MIPS16_GPREL, R_MIPS16_GPREL - R_MIPS16_min }, 1284 { BFD_RELOC_MIPS16_GOT16, R_MIPS16_GOT16 - R_MIPS16_min }, 1285 { BFD_RELOC_MIPS16_CALL16, R_MIPS16_CALL16 - R_MIPS16_min }, 1286 { BFD_RELOC_MIPS16_HI16_S, R_MIPS16_HI16 - R_MIPS16_min }, 1287 { BFD_RELOC_MIPS16_LO16, R_MIPS16_LO16 - R_MIPS16_min }, 1288}; 1289 1290/* Given a BFD reloc type, return a howto structure. */ 1291 1292static reloc_howto_type * 1293bfd_elf32_bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code) 1294{ 1295 unsigned int i; 1296 reloc_howto_type *howto_table = elf_mips_howto_table_rel; 1297 reloc_howto_type *howto16_table = elf_mips16_howto_table_rel; 1298 1299 for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); 1300 i++) 1301 { 1302 if (mips_reloc_map[i].bfd_val == code) 1303 return &howto_table[(int) mips_reloc_map[i].elf_val]; 1304 } 1305 1306 for (i = 0; i < sizeof (mips16_reloc_map) / sizeof (struct elf_reloc_map); 1307 i++) 1308 { 1309 if (mips16_reloc_map[i].bfd_val == code) 1310 return &howto16_table[(int) mips16_reloc_map[i].elf_val]; 1311 } 1312 1313 switch (code) 1314 { 1315 default: 1316 bfd_set_error (bfd_error_bad_value); 1317 return NULL; 1318 1319 case BFD_RELOC_CTOR: 1320 /* We need to handle BFD_RELOC_CTOR specially. 1321 Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the 1322 size of addresses of the ABI. */ 1323 if ((elf_elfheader (abfd)->e_flags & (E_MIPS_ABI_O64 1324 | E_MIPS_ABI_EABI64)) != 0) 1325 return &elf_mips_ctor64_howto; 1326 else 1327 return &howto_table[(int) R_MIPS_32]; 1328 1329 case BFD_RELOC_VTABLE_INHERIT: 1330 return &elf_mips_gnu_vtinherit_howto; 1331 case BFD_RELOC_VTABLE_ENTRY: 1332 return &elf_mips_gnu_vtentry_howto; 1333 case BFD_RELOC_32_PCREL: 1334 return &elf_mips_gnu_pcrel32; 1335 case BFD_RELOC_MIPS_COPY: 1336 return &elf_mips_copy_howto; 1337 case BFD_RELOC_MIPS_JUMP_SLOT: 1338 return &elf_mips_jump_slot_howto; 1339 } 1340} 1341 1342static reloc_howto_type * 1343bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 1344 const char *r_name) 1345{ 1346 unsigned int i; 1347 1348 for (i = 0; 1349 i < (sizeof (elf_mips_howto_table_rel) 1350 / sizeof (elf_mips_howto_table_rel[0])); 1351 i++) 1352 if (elf_mips_howto_table_rel[i].name != NULL 1353 && strcasecmp (elf_mips_howto_table_rel[i].name, r_name) == 0) 1354 return &elf_mips_howto_table_rel[i]; 1355 1356 for (i = 0; 1357 i < (sizeof (elf_mips16_howto_table_rel) 1358 / sizeof (elf_mips16_howto_table_rel[0])); 1359 i++) 1360 if (elf_mips16_howto_table_rel[i].name != NULL 1361 && strcasecmp (elf_mips16_howto_table_rel[i].name, r_name) == 0) 1362 return &elf_mips16_howto_table_rel[i]; 1363 1364 if (strcasecmp (elf_mips_gnu_pcrel32.name, r_name) == 0) 1365 return &elf_mips_gnu_pcrel32; 1366 if (strcasecmp (elf_mips_gnu_rel16_s2.name, r_name) == 0) 1367 return &elf_mips_gnu_rel16_s2; 1368 if (strcasecmp (elf_mips_gnu_vtinherit_howto.name, r_name) == 0) 1369 return &elf_mips_gnu_vtinherit_howto; 1370 if (strcasecmp (elf_mips_gnu_vtentry_howto.name, r_name) == 0) 1371 return &elf_mips_gnu_vtentry_howto; 1372 if (strcasecmp (elf_mips_copy_howto.name, r_name) == 0) 1373 return &elf_mips_copy_howto; 1374 if (strcasecmp (elf_mips_jump_slot_howto.name, r_name) == 0) 1375 return &elf_mips_jump_slot_howto; 1376 1377 return NULL; 1378} 1379 1380/* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */ 1381 1382static reloc_howto_type * 1383mips_elf32_rtype_to_howto (unsigned int r_type, 1384 bfd_boolean rela_p ATTRIBUTE_UNUSED) 1385{ 1386 switch (r_type) 1387 { 1388 case R_MIPS_GNU_VTINHERIT: 1389 return &elf_mips_gnu_vtinherit_howto; 1390 case R_MIPS_GNU_VTENTRY: 1391 return &elf_mips_gnu_vtentry_howto; 1392 case R_MIPS_GNU_REL16_S2: 1393 return &elf_mips_gnu_rel16_s2; 1394 case R_MIPS_PC32: 1395 return &elf_mips_gnu_pcrel32; 1396 case R_MIPS_COPY: 1397 return &elf_mips_copy_howto; 1398 case R_MIPS_JUMP_SLOT: 1399 return &elf_mips_jump_slot_howto; 1400 default: 1401 if (r_type >= R_MIPS16_min && r_type < R_MIPS16_max) 1402 return &elf_mips16_howto_table_rel[r_type - R_MIPS16_min]; 1403 BFD_ASSERT (r_type < (unsigned int) R_MIPS_max); 1404 return &elf_mips_howto_table_rel[r_type]; 1405 } 1406} 1407 1408/* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */ 1409 1410static void 1411mips_info_to_howto_rel (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst) 1412{ 1413 const struct elf_backend_data *bed; 1414 unsigned int r_type; 1415 1416 r_type = ELF32_R_TYPE (dst->r_info); 1417 bed = get_elf_backend_data (abfd); 1418 cache_ptr->howto = bed->elf_backend_mips_rtype_to_howto (r_type, FALSE); 1419 1420 /* The addend for a GPREL16 or LITERAL relocation comes from the GP 1421 value for the object file. We get the addend now, rather than 1422 when we do the relocation, because the symbol manipulations done 1423 by the linker may cause us to lose track of the input BFD. */ 1424 if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0 1425 && (gprel16_reloc_p (r_type) || r_type == (unsigned int) R_MIPS_LITERAL)) 1426 cache_ptr->addend = elf_gp (abfd); 1427} 1428 1429/* Given a MIPS Elf_Internal_Rela, fill in an arelent structure. */ 1430 1431static void 1432mips_info_to_howto_rela (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst) 1433{ 1434 mips_info_to_howto_rel (abfd, cache_ptr, dst); 1435 1436 /* If we ever need to do any extra processing with dst->r_addend 1437 (the field omitted in an Elf_Internal_Rel) we can do it here. */ 1438} 1439 1440/* Determine whether a symbol is global for the purposes of splitting 1441 the symbol table into global symbols and local symbols. At least 1442 on Irix 5, this split must be between section symbols and all other 1443 symbols. On most ELF targets the split is between static symbols 1444 and externally visible symbols. */ 1445 1446static bfd_boolean 1447mips_elf_sym_is_global (bfd *abfd ATTRIBUTE_UNUSED, asymbol *sym) 1448{ 1449 if (SGI_COMPAT (abfd)) 1450 return (sym->flags & BSF_SECTION_SYM) == 0; 1451 else 1452 return ((sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_GNU_UNIQUE)) != 0 1453 || bfd_is_und_section (bfd_get_section (sym)) 1454 || bfd_is_com_section (bfd_get_section (sym))); 1455} 1456 1457/* Set the right machine number for a MIPS ELF file. */ 1458 1459static bfd_boolean 1460mips_elf32_object_p (bfd *abfd) 1461{ 1462 unsigned long mach; 1463 1464 /* Irix 5 and 6 are broken. Object file symbol tables are not always 1465 sorted correctly such that local symbols precede global symbols, 1466 and the sh_info field in the symbol table is not always right. */ 1467 if (SGI_COMPAT (abfd)) 1468 elf_bad_symtab (abfd) = TRUE; 1469 1470 if (ABI_N32_P (abfd)) 1471 return FALSE; 1472 1473 mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags); 1474 bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach); 1475 1476 return TRUE; 1477} 1478 1479/* MIPS ELF local labels start with '$', not 'L'. */ 1480 1481static bfd_boolean 1482mips_elf_is_local_label_name (bfd *abfd, const char *name) 1483{ 1484 if (name[0] == '$') 1485 return TRUE; 1486 1487 /* On Irix 6, the labels go back to starting with '.', so we accept 1488 the generic ELF local label syntax as well. */ 1489 return _bfd_elf_is_local_label_name (abfd, name); 1490} 1491 1492/* Support for core dump NOTE sections. */ 1493static bfd_boolean 1494elf32_mips_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 1495{ 1496 int offset; 1497 unsigned int size; 1498 1499 switch (note->descsz) 1500 { 1501 default: 1502 return FALSE; 1503 1504 case 256: /* Linux/MIPS */ 1505 /* pr_cursig */ 1506 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); 1507 1508 /* pr_pid */ 1509 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24); 1510 1511 /* pr_reg */ 1512 offset = 72; 1513 size = 180; 1514 1515 break; 1516 } 1517 1518 /* Make a ".reg/999" section. */ 1519 return _bfd_elfcore_make_pseudosection (abfd, ".reg", 1520 size, note->descpos + offset); 1521} 1522 1523static bfd_boolean 1524elf32_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 1525{ 1526 switch (note->descsz) 1527 { 1528 default: 1529 return FALSE; 1530 1531 case 128: /* Linux/MIPS elf_prpsinfo */ 1532 elf_tdata (abfd)->core_program 1533 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); 1534 elf_tdata (abfd)->core_command 1535 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); 1536 } 1537 1538 /* Note that for some reason, a spurious space is tacked 1539 onto the end of the args in some (at least one anyway) 1540 implementations, so strip it off if it exists. */ 1541 1542 { 1543 char *command = elf_tdata (abfd)->core_command; 1544 int n = strlen (command); 1545 1546 if (0 < n && command[n - 1] == ' ') 1547 command[n - 1] = '\0'; 1548 } 1549 1550 return TRUE; 1551} 1552 1553/* Depending on the target vector we generate some version of Irix 1554 executables or "normal" MIPS ELF ABI executables. */ 1555static irix_compat_t 1556elf32_mips_irix_compat (bfd *abfd) 1557{ 1558 if ((abfd->xvec == &bfd_elf32_bigmips_vec) 1559 || (abfd->xvec == &bfd_elf32_littlemips_vec)) 1560 return ict_irix5; 1561 else 1562 return ict_none; 1563} 1564 1565/* ECOFF swapping routines. These are used when dealing with the 1566 .mdebug section, which is in the ECOFF debugging format. */ 1567static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = { 1568 /* Symbol table magic number. */ 1569 magicSym, 1570 /* Alignment of debugging information. E.g., 4. */ 1571 4, 1572 /* Sizes of external symbolic information. */ 1573 sizeof (struct hdr_ext), 1574 sizeof (struct dnr_ext), 1575 sizeof (struct pdr_ext), 1576 sizeof (struct sym_ext), 1577 sizeof (struct opt_ext), 1578 sizeof (struct fdr_ext), 1579 sizeof (struct rfd_ext), 1580 sizeof (struct ext_ext), 1581 /* Functions to swap in external symbolic data. */ 1582 ecoff_swap_hdr_in, 1583 ecoff_swap_dnr_in, 1584 ecoff_swap_pdr_in, 1585 ecoff_swap_sym_in, 1586 ecoff_swap_opt_in, 1587 ecoff_swap_fdr_in, 1588 ecoff_swap_rfd_in, 1589 ecoff_swap_ext_in, 1590 _bfd_ecoff_swap_tir_in, 1591 _bfd_ecoff_swap_rndx_in, 1592 /* Functions to swap out external symbolic data. */ 1593 ecoff_swap_hdr_out, 1594 ecoff_swap_dnr_out, 1595 ecoff_swap_pdr_out, 1596 ecoff_swap_sym_out, 1597 ecoff_swap_opt_out, 1598 ecoff_swap_fdr_out, 1599 ecoff_swap_rfd_out, 1600 ecoff_swap_ext_out, 1601 _bfd_ecoff_swap_tir_out, 1602 _bfd_ecoff_swap_rndx_out, 1603 /* Function to read in symbolic data. */ 1604 _bfd_mips_elf_read_ecoff_info 1605}; 1606 1607#define ELF_ARCH bfd_arch_mips 1608#define ELF_TARGET_ID MIPS_ELF_DATA 1609#define ELF_MACHINE_CODE EM_MIPS 1610 1611#define elf_backend_collect TRUE 1612#define elf_backend_type_change_ok TRUE 1613#define elf_backend_can_gc_sections TRUE 1614#define elf_info_to_howto mips_info_to_howto_rela 1615#define elf_info_to_howto_rel mips_info_to_howto_rel 1616#define elf_backend_sym_is_global mips_elf_sym_is_global 1617#define elf_backend_object_p mips_elf32_object_p 1618#define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing 1619#define elf_backend_section_processing _bfd_mips_elf_section_processing 1620#define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr 1621#define elf_backend_fake_sections _bfd_mips_elf_fake_sections 1622#define elf_backend_section_from_bfd_section \ 1623 _bfd_mips_elf_section_from_bfd_section 1624#define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook 1625#define elf_backend_link_output_symbol_hook \ 1626 _bfd_mips_elf_link_output_symbol_hook 1627#define elf_backend_create_dynamic_sections \ 1628 _bfd_mips_elf_create_dynamic_sections 1629#define elf_backend_check_relocs _bfd_mips_elf_check_relocs 1630#define elf_backend_merge_symbol_attribute \ 1631 _bfd_mips_elf_merge_symbol_attribute 1632#define elf_backend_get_target_dtag _bfd_mips_elf_get_target_dtag 1633#define elf_backend_adjust_dynamic_symbol \ 1634 _bfd_mips_elf_adjust_dynamic_symbol 1635#define elf_backend_always_size_sections \ 1636 _bfd_mips_elf_always_size_sections 1637#define elf_backend_size_dynamic_sections \ 1638 _bfd_mips_elf_size_dynamic_sections 1639#define elf_backend_init_index_section _bfd_elf_init_1_index_section 1640#define elf_backend_relocate_section _bfd_mips_elf_relocate_section 1641#define elf_backend_finish_dynamic_symbol \ 1642 _bfd_mips_elf_finish_dynamic_symbol 1643#define elf_backend_finish_dynamic_sections \ 1644 _bfd_mips_elf_finish_dynamic_sections 1645#define elf_backend_final_write_processing \ 1646 _bfd_mips_elf_final_write_processing 1647#define elf_backend_additional_program_headers \ 1648 _bfd_mips_elf_additional_program_headers 1649#define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map 1650#define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook 1651#define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook 1652#define elf_backend_copy_indirect_symbol \ 1653 _bfd_mips_elf_copy_indirect_symbol 1654#define elf_backend_grok_prstatus elf32_mips_grok_prstatus 1655#define elf_backend_grok_psinfo elf32_mips_grok_psinfo 1656#define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap 1657 1658#define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO) 1659#define elf_backend_may_use_rel_p 1 1660#define elf_backend_may_use_rela_p 0 1661#define elf_backend_default_use_rela_p 0 1662#define elf_backend_sign_extend_vma TRUE 1663#define elf_backend_plt_readonly 1 1664#define elf_backend_plt_sym_val _bfd_mips_elf_plt_sym_val 1665 1666#define elf_backend_discard_info _bfd_mips_elf_discard_info 1667#define elf_backend_ignore_discarded_relocs \ 1668 _bfd_mips_elf_ignore_discarded_relocs 1669#define elf_backend_write_section _bfd_mips_elf_write_section 1670#define elf_backend_mips_irix_compat elf32_mips_irix_compat 1671#define elf_backend_mips_rtype_to_howto mips_elf32_rtype_to_howto 1672#define bfd_elf32_bfd_is_local_label_name \ 1673 mips_elf_is_local_label_name 1674#define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line 1675#define bfd_elf32_find_inliner_info _bfd_mips_elf_find_inliner_info 1676#define bfd_elf32_new_section_hook _bfd_mips_elf_new_section_hook 1677#define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents 1678#define bfd_elf32_bfd_get_relocated_section_contents \ 1679 _bfd_elf_mips_get_relocated_section_contents 1680#define bfd_elf32_bfd_link_hash_table_create \ 1681 _bfd_mips_elf_link_hash_table_create 1682#define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link 1683#define bfd_elf32_bfd_merge_private_bfd_data \ 1684 _bfd_mips_elf_merge_private_bfd_data 1685#define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags 1686#define bfd_elf32_bfd_print_private_bfd_data \ 1687 _bfd_mips_elf_print_private_bfd_data 1688 1689/* Support for SGI-ish mips targets. */ 1690#define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec 1691#define TARGET_LITTLE_NAME "elf32-littlemips" 1692#define TARGET_BIG_SYM bfd_elf32_bigmips_vec 1693#define TARGET_BIG_NAME "elf32-bigmips" 1694 1695/* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses 1696 a value of 0x1000, and we are compatible. */ 1697#define ELF_MAXPAGESIZE 0x1000 1698#define ELF_COMMONPAGESIZE 0x1000 1699 1700#include "elf32-target.h" 1701 1702/* Support for traditional mips targets. */ 1703#undef TARGET_LITTLE_SYM 1704#undef TARGET_LITTLE_NAME 1705#undef TARGET_BIG_SYM 1706#undef TARGET_BIG_NAME 1707 1708#undef ELF_MAXPAGESIZE 1709#undef ELF_COMMONPAGESIZE 1710 1711#define TARGET_LITTLE_SYM bfd_elf32_tradlittlemips_vec 1712#define TARGET_LITTLE_NAME "elf32-tradlittlemips" 1713#define TARGET_BIG_SYM bfd_elf32_tradbigmips_vec 1714#define TARGET_BIG_NAME "elf32-tradbigmips" 1715 1716/* The MIPS ABI says at Page 5-1: 1717 Virtual addresses and file offsets for MIPS segments are congruent 1718 modulo 64 KByte (0x10000) or larger powers of 2. Because 64 KBytes 1719 is the maximum page size, the files are suitable for paging 1720 regardless of physical page size. */ 1721#define ELF_MAXPAGESIZE 0x10000 1722#define ELF_COMMONPAGESIZE 0x1000 1723#define elf32_bed elf32_tradbed 1724 1725/* Include the target file again for this target. */ 1726#include "elf32-target.h" 1727 1728/* Implement elf_backend_final_write_processing for VxWorks. */ 1729 1730static void 1731mips_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) 1732{ 1733 _bfd_mips_elf_final_write_processing (abfd, linker); 1734 elf_vxworks_final_write_processing (abfd, linker); 1735} 1736 1737#undef TARGET_LITTLE_SYM 1738#undef TARGET_LITTLE_NAME 1739#undef TARGET_BIG_SYM 1740#undef TARGET_BIG_NAME 1741 1742#undef ELF_MAXPAGESIZE 1743#undef ELF_COMMONPAGESIZE 1744 1745#define TARGET_LITTLE_SYM bfd_elf32_littlemips_vxworks_vec 1746#define TARGET_LITTLE_NAME "elf32-littlemips-vxworks" 1747#define TARGET_BIG_SYM bfd_elf32_bigmips_vxworks_vec 1748#define TARGET_BIG_NAME "elf32-bigmips-vxworks" 1749 1750#undef elf32_bed 1751#define elf32_bed elf32_mips_vxworks_bed 1752 1753#define ELF_MAXPAGESIZE 0x1000 1754#define ELF_COMMONPAGESIZE 0x1000 1755 1756#undef elf_backend_want_got_plt 1757#define elf_backend_want_got_plt 1 1758#undef elf_backend_want_plt_sym 1759#define elf_backend_want_plt_sym 1 1760#undef elf_backend_may_use_rel_p 1761#define elf_backend_may_use_rel_p 0 1762#undef elf_backend_may_use_rela_p 1763#define elf_backend_may_use_rela_p 1 1764#undef elf_backend_default_use_rela_p 1765#define elf_backend_default_use_rela_p 1 1766#undef elf_backend_got_header_size 1767#define elf_backend_got_header_size (4 * 3) 1768#undef elf_backend_plt_sym_val 1769 1770#undef elf_backend_finish_dynamic_symbol 1771#define elf_backend_finish_dynamic_symbol \ 1772 _bfd_mips_vxworks_finish_dynamic_symbol 1773#undef bfd_elf32_bfd_link_hash_table_create 1774#define bfd_elf32_bfd_link_hash_table_create \ 1775 _bfd_mips_vxworks_link_hash_table_create 1776#undef elf_backend_add_symbol_hook 1777#define elf_backend_add_symbol_hook \ 1778 elf_vxworks_add_symbol_hook 1779#undef elf_backend_link_output_symbol_hook 1780#define elf_backend_link_output_symbol_hook \ 1781 elf_vxworks_link_output_symbol_hook 1782#undef elf_backend_emit_relocs 1783#define elf_backend_emit_relocs \ 1784 elf_vxworks_emit_relocs 1785#undef elf_backend_final_write_processing 1786#define elf_backend_final_write_processing \ 1787 mips_vxworks_final_write_processing 1788 1789#undef elf_backend_additional_program_headers 1790#undef elf_backend_modify_segment_map 1791#undef elf_backend_symbol_processing 1792/* NOTE: elf_backend_rela_normal is not defined for MIPS. */ 1793 1794#include "elf32-target.h" 1795