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 41/* Get the ECOFF swapping routines. */ 42#include "coff/sym.h" 43#include "coff/symconst.h" 44#include "coff/internal.h" 45#include "coff/ecoff.h" 46#include "coff/mips.h" 47#define ECOFF_SIGNED_32 48#include "ecoffswap.h" 49 50static bfd_boolean mips_elf_assign_gp 51 (bfd *, bfd_vma *); 52static bfd_reloc_status_type mips_elf_final_gp 53 (bfd *, asymbol *, bfd_boolean, char **, bfd_vma *); 54static bfd_reloc_status_type mips_elf_gprel16_reloc 55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 56static bfd_reloc_status_type mips_elf_literal_reloc 57 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 58static bfd_reloc_status_type mips_elf_gprel32_reloc 59 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 60static bfd_reloc_status_type gprel32_with_gp 61 (bfd *, asymbol *, arelent *, asection *, bfd_boolean, void *, bfd_vma); 62static bfd_reloc_status_type mips_elf_shift6_reloc 63 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 64static bfd_reloc_status_type mips16_jump_reloc 65 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 66static bfd_reloc_status_type mips16_gprel_reloc 67 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 68static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup 69 (bfd *, bfd_reloc_code_real_type); 70static reloc_howto_type *mips_elf_n32_rtype_to_howto 71 (unsigned int, bfd_boolean); 72static void mips_info_to_howto_rel 73 (bfd *, arelent *, Elf_Internal_Rela *); 74static void mips_info_to_howto_rela 75 (bfd *, arelent *, Elf_Internal_Rela *); 76static bfd_boolean mips_elf_sym_is_global 77 (bfd *, asymbol *); 78static bfd_boolean mips_elf_n32_object_p 79 (bfd *); 80static bfd_boolean elf32_mips_grok_prstatus 81 (bfd *, Elf_Internal_Note *); 82static bfd_boolean elf32_mips_grok_psinfo 83 (bfd *, Elf_Internal_Note *); 84static irix_compat_t elf_n32_mips_irix_compat 85 (bfd *); 86 87extern const bfd_target bfd_elf32_nbigmips_vec; 88extern const bfd_target bfd_elf32_nlittlemips_vec; 89 90/* Nonzero if ABFD is using the N32 ABI. */ 91#define ABI_N32_P(abfd) \ 92 ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0) 93 94/* Whether we are trying to be compatible with IRIX at all. */ 95#define SGI_COMPAT(abfd) \ 96 (elf_n32_mips_irix_compat (abfd) != ict_none) 97 98/* The number of local .got entries we reserve. */ 99#define MIPS_RESERVED_GOTNO (2) 100 101/* In case we're on a 32-bit machine, construct a 64-bit "-1" value 102 from smaller values. Start with zero, widen, *then* decrement. */ 103#define MINUS_ONE (((bfd_vma)0) - 1) 104 105/* The relocation table used for SHT_REL sections. */ 106 107static reloc_howto_type elf_mips_howto_table_rel[] = 108{ 109 /* No relocation. */ 110 HOWTO (R_MIPS_NONE, /* type */ 111 0, /* rightshift */ 112 0, /* size (0 = byte, 1 = short, 2 = long) */ 113 0, /* bitsize */ 114 FALSE, /* pc_relative */ 115 0, /* bitpos */ 116 complain_overflow_dont, /* complain_on_overflow */ 117 _bfd_mips_elf_generic_reloc, /* special_function */ 118 "R_MIPS_NONE", /* name */ 119 FALSE, /* partial_inplace */ 120 0, /* src_mask */ 121 0, /* dst_mask */ 122 FALSE), /* pcrel_offset */ 123 124 /* 16 bit relocation. */ 125 HOWTO (R_MIPS_16, /* type */ 126 0, /* rightshift */ 127 2, /* size (0 = byte, 1 = short, 2 = long) */ 128 16, /* bitsize */ 129 FALSE, /* pc_relative */ 130 0, /* bitpos */ 131 complain_overflow_signed, /* complain_on_overflow */ 132 _bfd_mips_elf_generic_reloc, /* special_function */ 133 "R_MIPS_16", /* name */ 134 TRUE, /* partial_inplace */ 135 0x0000ffff, /* src_mask */ 136 0x0000ffff, /* dst_mask */ 137 FALSE), /* pcrel_offset */ 138 139 /* 32 bit relocation. */ 140 HOWTO (R_MIPS_32, /* type */ 141 0, /* rightshift */ 142 2, /* size (0 = byte, 1 = short, 2 = long) */ 143 32, /* bitsize */ 144 FALSE, /* pc_relative */ 145 0, /* bitpos */ 146 complain_overflow_dont, /* complain_on_overflow */ 147 _bfd_mips_elf_generic_reloc, /* special_function */ 148 "R_MIPS_32", /* name */ 149 TRUE, /* partial_inplace */ 150 0xffffffff, /* src_mask */ 151 0xffffffff, /* dst_mask */ 152 FALSE), /* pcrel_offset */ 153 154 /* 32 bit symbol relative relocation. */ 155 HOWTO (R_MIPS_REL32, /* type */ 156 0, /* rightshift */ 157 2, /* size (0 = byte, 1 = short, 2 = long) */ 158 32, /* bitsize */ 159 FALSE, /* pc_relative */ 160 0, /* bitpos */ 161 complain_overflow_dont, /* complain_on_overflow */ 162 _bfd_mips_elf_generic_reloc, /* special_function */ 163 "R_MIPS_REL32", /* name */ 164 TRUE, /* partial_inplace */ 165 0xffffffff, /* src_mask */ 166 0xffffffff, /* dst_mask */ 167 FALSE), /* pcrel_offset */ 168 169 /* 26 bit jump address. */ 170 HOWTO (R_MIPS_26, /* type */ 171 2, /* rightshift */ 172 2, /* size (0 = byte, 1 = short, 2 = long) */ 173 26, /* bitsize */ 174 FALSE, /* pc_relative */ 175 0, /* bitpos */ 176 complain_overflow_dont, /* complain_on_overflow */ 177 /* This needs complex overflow 178 detection, because the upper four 179 bits must match the PC + 4. */ 180 _bfd_mips_elf_generic_reloc, /* special_function */ 181 "R_MIPS_26", /* name */ 182 TRUE, /* partial_inplace */ 183 0x03ffffff, /* src_mask */ 184 0x03ffffff, /* dst_mask */ 185 FALSE), /* pcrel_offset */ 186 187 /* R_MIPS_HI16 and R_MIPS_LO16 are unsupported for NewABI REL. 188 However, the native IRIX6 tools use them, so we try our best. */ 189 190 /* High 16 bits of symbol value. */ 191 HOWTO (R_MIPS_HI16, /* type */ 192 16, /* rightshift */ 193 2, /* size (0 = byte, 1 = short, 2 = long) */ 194 16, /* bitsize */ 195 FALSE, /* pc_relative */ 196 0, /* bitpos */ 197 complain_overflow_dont, /* complain_on_overflow */ 198 _bfd_mips_elf_hi16_reloc, /* special_function */ 199 "R_MIPS_HI16", /* name */ 200 TRUE, /* partial_inplace */ 201 0x0000ffff, /* src_mask */ 202 0x0000ffff, /* dst_mask */ 203 FALSE), /* pcrel_offset */ 204 205 /* Low 16 bits of symbol value. */ 206 HOWTO (R_MIPS_LO16, /* type */ 207 0, /* rightshift */ 208 2, /* size (0 = byte, 1 = short, 2 = long) */ 209 16, /* bitsize */ 210 FALSE, /* pc_relative */ 211 0, /* bitpos */ 212 complain_overflow_dont, /* complain_on_overflow */ 213 _bfd_mips_elf_lo16_reloc, /* special_function */ 214 "R_MIPS_LO16", /* name */ 215 TRUE, /* partial_inplace */ 216 0x0000ffff, /* src_mask */ 217 0x0000ffff, /* dst_mask */ 218 FALSE), /* pcrel_offset */ 219 220 /* GP relative reference. */ 221 HOWTO (R_MIPS_GPREL16, /* type */ 222 0, /* rightshift */ 223 2, /* size (0 = byte, 1 = short, 2 = long) */ 224 16, /* bitsize */ 225 FALSE, /* pc_relative */ 226 0, /* bitpos */ 227 complain_overflow_signed, /* complain_on_overflow */ 228 mips_elf_gprel16_reloc, /* special_function */ 229 "R_MIPS_GPREL16", /* name */ 230 TRUE, /* partial_inplace */ 231 0x0000ffff, /* src_mask */ 232 0x0000ffff, /* dst_mask */ 233 FALSE), /* pcrel_offset */ 234 235 /* Reference to literal section. */ 236 HOWTO (R_MIPS_LITERAL, /* type */ 237 0, /* rightshift */ 238 2, /* size (0 = byte, 1 = short, 2 = long) */ 239 16, /* bitsize */ 240 FALSE, /* pc_relative */ 241 0, /* bitpos */ 242 complain_overflow_signed, /* complain_on_overflow */ 243 mips_elf_literal_reloc, /* special_function */ 244 "R_MIPS_LITERAL", /* name */ 245 TRUE, /* partial_inplace */ 246 0x0000ffff, /* src_mask */ 247 0x0000ffff, /* dst_mask */ 248 FALSE), /* pcrel_offset */ 249 250 /* Reference to global offset table. */ 251 HOWTO (R_MIPS_GOT16, /* type */ 252 0, /* rightshift */ 253 2, /* size (0 = byte, 1 = short, 2 = long) */ 254 16, /* bitsize */ 255 FALSE, /* pc_relative */ 256 0, /* bitpos */ 257 complain_overflow_signed, /* complain_on_overflow */ 258 _bfd_mips_elf_got16_reloc, /* special_function */ 259 "R_MIPS_GOT16", /* name */ 260 TRUE, /* partial_inplace */ 261 0x0000ffff, /* src_mask */ 262 0x0000ffff, /* dst_mask */ 263 FALSE), /* pcrel_offset */ 264 265 /* 16 bit PC relative reference. Note that the ABI document has a typo 266 and claims R_MIPS_PC16 to be not rightshifted, rendering it useless. 267 We do the right thing here. */ 268 HOWTO (R_MIPS_PC16, /* type */ 269 2, /* rightshift */ 270 2, /* size (0 = byte, 1 = short, 2 = long) */ 271 16, /* bitsize */ 272 TRUE, /* pc_relative */ 273 0, /* bitpos */ 274 complain_overflow_signed, /* complain_on_overflow */ 275 _bfd_mips_elf_generic_reloc, /* special_function */ 276 "R_MIPS_PC16", /* name */ 277 TRUE, /* partial_inplace */ 278 0x0000ffff, /* src_mask */ 279 0x0000ffff, /* dst_mask */ 280 TRUE), /* pcrel_offset */ 281 282 /* 16 bit call through global offset table. */ 283 HOWTO (R_MIPS_CALL16, /* type */ 284 0, /* rightshift */ 285 2, /* size (0 = byte, 1 = short, 2 = long) */ 286 16, /* bitsize */ 287 FALSE, /* pc_relative */ 288 0, /* bitpos */ 289 complain_overflow_signed, /* complain_on_overflow */ 290 _bfd_mips_elf_generic_reloc, /* special_function */ 291 "R_MIPS_CALL16", /* name */ 292 TRUE, /* partial_inplace */ 293 0x0000ffff, /* src_mask */ 294 0x0000ffff, /* dst_mask */ 295 FALSE), /* pcrel_offset */ 296 297 /* 32 bit GP relative reference. */ 298 HOWTO (R_MIPS_GPREL32, /* type */ 299 0, /* rightshift */ 300 2, /* size (0 = byte, 1 = short, 2 = long) */ 301 32, /* bitsize */ 302 FALSE, /* pc_relative */ 303 0, /* bitpos */ 304 complain_overflow_dont, /* complain_on_overflow */ 305 mips_elf_gprel32_reloc, /* special_function */ 306 "R_MIPS_GPREL32", /* name */ 307 TRUE, /* partial_inplace */ 308 0xffffffff, /* src_mask */ 309 0xffffffff, /* dst_mask */ 310 FALSE), /* pcrel_offset */ 311 312 /* The remaining relocs are defined on Irix 5, although they are 313 not defined by the ABI. */ 314 EMPTY_HOWTO (13), 315 EMPTY_HOWTO (14), 316 EMPTY_HOWTO (15), 317 318 /* A 5 bit shift field. */ 319 HOWTO (R_MIPS_SHIFT5, /* type */ 320 0, /* rightshift */ 321 2, /* size (0 = byte, 1 = short, 2 = long) */ 322 5, /* bitsize */ 323 FALSE, /* pc_relative */ 324 6, /* bitpos */ 325 complain_overflow_bitfield, /* complain_on_overflow */ 326 _bfd_mips_elf_generic_reloc, /* special_function */ 327 "R_MIPS_SHIFT5", /* name */ 328 TRUE, /* partial_inplace */ 329 0x000007c0, /* src_mask */ 330 0x000007c0, /* dst_mask */ 331 FALSE), /* pcrel_offset */ 332 333 /* A 6 bit shift field. */ 334 HOWTO (R_MIPS_SHIFT6, /* type */ 335 0, /* rightshift */ 336 2, /* size (0 = byte, 1 = short, 2 = long) */ 337 6, /* bitsize */ 338 FALSE, /* pc_relative */ 339 6, /* bitpos */ 340 complain_overflow_bitfield, /* complain_on_overflow */ 341 mips_elf_shift6_reloc, /* special_function */ 342 "R_MIPS_SHIFT6", /* name */ 343 TRUE, /* partial_inplace */ 344 0x000007c4, /* src_mask */ 345 0x000007c4, /* dst_mask */ 346 FALSE), /* pcrel_offset */ 347 348 /* A 64 bit relocation. */ 349 HOWTO (R_MIPS_64, /* type */ 350 0, /* rightshift */ 351 4, /* size (0 = byte, 1 = short, 2 = long) */ 352 64, /* bitsize */ 353 FALSE, /* pc_relative */ 354 0, /* bitpos */ 355 complain_overflow_dont, /* complain_on_overflow */ 356 _bfd_mips_elf_generic_reloc, /* special_function */ 357 "R_MIPS_64", /* name */ 358 TRUE, /* partial_inplace */ 359 MINUS_ONE, /* src_mask */ 360 MINUS_ONE, /* dst_mask */ 361 FALSE), /* pcrel_offset */ 362 363 /* Displacement in the global offset table. */ 364 HOWTO (R_MIPS_GOT_DISP, /* type */ 365 0, /* rightshift */ 366 2, /* size (0 = byte, 1 = short, 2 = long) */ 367 16, /* bitsize */ 368 FALSE, /* pc_relative */ 369 0, /* bitpos */ 370 complain_overflow_signed, /* complain_on_overflow */ 371 _bfd_mips_elf_generic_reloc, /* special_function */ 372 "R_MIPS_GOT_DISP", /* name */ 373 TRUE, /* partial_inplace */ 374 0x0000ffff, /* src_mask */ 375 0x0000ffff, /* dst_mask */ 376 FALSE), /* pcrel_offset */ 377 378 /* Displacement to page pointer in the global offset table. */ 379 HOWTO (R_MIPS_GOT_PAGE, /* type */ 380 0, /* rightshift */ 381 2, /* size (0 = byte, 1 = short, 2 = long) */ 382 16, /* bitsize */ 383 FALSE, /* pc_relative */ 384 0, /* bitpos */ 385 complain_overflow_signed, /* complain_on_overflow */ 386 _bfd_mips_elf_generic_reloc, /* special_function */ 387 "R_MIPS_GOT_PAGE", /* name */ 388 TRUE, /* partial_inplace */ 389 0x0000ffff, /* src_mask */ 390 0x0000ffff, /* dst_mask */ 391 FALSE), /* pcrel_offset */ 392 393 /* Offset from page pointer in the global offset table. */ 394 HOWTO (R_MIPS_GOT_OFST, /* type */ 395 0, /* rightshift */ 396 2, /* size (0 = byte, 1 = short, 2 = long) */ 397 16, /* bitsize */ 398 FALSE, /* pc_relative */ 399 0, /* bitpos */ 400 complain_overflow_signed, /* complain_on_overflow */ 401 _bfd_mips_elf_generic_reloc, /* special_function */ 402 "R_MIPS_GOT_OFST", /* name */ 403 TRUE, /* partial_inplace */ 404 0x0000ffff, /* src_mask */ 405 0x0000ffff, /* dst_mask */ 406 FALSE), /* pcrel_offset */ 407 408 /* High 16 bits of displacement in global offset table. */ 409 HOWTO (R_MIPS_GOT_HI16, /* type */ 410 0, /* rightshift */ 411 2, /* size (0 = byte, 1 = short, 2 = long) */ 412 16, /* bitsize */ 413 FALSE, /* pc_relative */ 414 0, /* bitpos */ 415 complain_overflow_dont, /* complain_on_overflow */ 416 _bfd_mips_elf_generic_reloc, /* special_function */ 417 "R_MIPS_GOT_HI16", /* name */ 418 TRUE, /* partial_inplace */ 419 0x0000ffff, /* src_mask */ 420 0x0000ffff, /* dst_mask */ 421 FALSE), /* pcrel_offset */ 422 423 /* Low 16 bits of displacement in global offset table. */ 424 HOWTO (R_MIPS_GOT_LO16, /* type */ 425 0, /* rightshift */ 426 2, /* size (0 = byte, 1 = short, 2 = long) */ 427 16, /* bitsize */ 428 FALSE, /* pc_relative */ 429 0, /* bitpos */ 430 complain_overflow_dont, /* complain_on_overflow */ 431 _bfd_mips_elf_generic_reloc, /* special_function */ 432 "R_MIPS_GOT_LO16", /* name */ 433 TRUE, /* partial_inplace */ 434 0x0000ffff, /* src_mask */ 435 0x0000ffff, /* dst_mask */ 436 FALSE), /* pcrel_offset */ 437 438 /* 64 bit subtraction. */ 439 HOWTO (R_MIPS_SUB, /* type */ 440 0, /* rightshift */ 441 4, /* size (0 = byte, 1 = short, 2 = long) */ 442 64, /* bitsize */ 443 FALSE, /* pc_relative */ 444 0, /* bitpos */ 445 complain_overflow_dont, /* complain_on_overflow */ 446 _bfd_mips_elf_generic_reloc, /* special_function */ 447 "R_MIPS_SUB", /* name */ 448 TRUE, /* partial_inplace */ 449 MINUS_ONE, /* src_mask */ 450 MINUS_ONE, /* dst_mask */ 451 FALSE), /* pcrel_offset */ 452 453 /* Insert the addend as an instruction. */ 454 /* FIXME: Not handled correctly. */ 455 HOWTO (R_MIPS_INSERT_A, /* type */ 456 0, /* rightshift */ 457 2, /* size (0 = byte, 1 = short, 2 = long) */ 458 32, /* bitsize */ 459 FALSE, /* pc_relative */ 460 0, /* bitpos */ 461 complain_overflow_dont, /* complain_on_overflow */ 462 _bfd_mips_elf_generic_reloc, /* special_function */ 463 "R_MIPS_INSERT_A", /* name */ 464 TRUE, /* partial_inplace */ 465 0xffffffff, /* src_mask */ 466 0xffffffff, /* dst_mask */ 467 FALSE), /* pcrel_offset */ 468 469 /* Insert the addend as an instruction, and change all relocations 470 to refer to the old instruction at the address. */ 471 /* FIXME: Not handled correctly. */ 472 HOWTO (R_MIPS_INSERT_B, /* type */ 473 0, /* rightshift */ 474 2, /* size (0 = byte, 1 = short, 2 = long) */ 475 32, /* 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_INSERT_B", /* name */ 481 TRUE, /* partial_inplace */ 482 0xffffffff, /* src_mask */ 483 0xffffffff, /* dst_mask */ 484 FALSE), /* pcrel_offset */ 485 486 /* Delete a 32 bit instruction. */ 487 /* FIXME: Not handled correctly. */ 488 HOWTO (R_MIPS_DELETE, /* type */ 489 0, /* rightshift */ 490 2, /* size (0 = byte, 1 = short, 2 = long) */ 491 32, /* bitsize */ 492 FALSE, /* pc_relative */ 493 0, /* bitpos */ 494 complain_overflow_dont, /* complain_on_overflow */ 495 _bfd_mips_elf_generic_reloc, /* special_function */ 496 "R_MIPS_DELETE", /* name */ 497 TRUE, /* partial_inplace */ 498 0xffffffff, /* src_mask */ 499 0xffffffff, /* dst_mask */ 500 FALSE), /* pcrel_offset */ 501 502 /* The MIPS ELF64 ABI Draft wants us to support these for REL relocations. 503 We don't, because 504 a) It means building the addend from a R_MIPS_HIGHEST/R_MIPS_HIGHER/ 505 R_MIPS_HI16/R_MIPS_LO16 sequence with varying ordering, using 506 fallable heuristics. 507 b) No other NewABI toolchain actually emits such relocations. */ 508 EMPTY_HOWTO (R_MIPS_HIGHER), 509 EMPTY_HOWTO (R_MIPS_HIGHEST), 510 511 /* High 16 bits of displacement in global offset table. */ 512 HOWTO (R_MIPS_CALL_HI16, /* type */ 513 0, /* rightshift */ 514 2, /* size (0 = byte, 1 = short, 2 = long) */ 515 16, /* bitsize */ 516 FALSE, /* pc_relative */ 517 0, /* bitpos */ 518 complain_overflow_dont, /* complain_on_overflow */ 519 _bfd_mips_elf_generic_reloc, /* special_function */ 520 "R_MIPS_CALL_HI16", /* name */ 521 TRUE, /* partial_inplace */ 522 0x0000ffff, /* src_mask */ 523 0x0000ffff, /* dst_mask */ 524 FALSE), /* pcrel_offset */ 525 526 /* Low 16 bits of displacement in global offset table. */ 527 HOWTO (R_MIPS_CALL_LO16, /* type */ 528 0, /* rightshift */ 529 2, /* size (0 = byte, 1 = short, 2 = long) */ 530 16, /* bitsize */ 531 FALSE, /* pc_relative */ 532 0, /* bitpos */ 533 complain_overflow_dont, /* complain_on_overflow */ 534 _bfd_mips_elf_generic_reloc, /* special_function */ 535 "R_MIPS_CALL_LO16", /* name */ 536 TRUE, /* partial_inplace */ 537 0x0000ffff, /* src_mask */ 538 0x0000ffff, /* dst_mask */ 539 FALSE), /* pcrel_offset */ 540 541 /* Section displacement. */ 542 HOWTO (R_MIPS_SCN_DISP, /* type */ 543 0, /* rightshift */ 544 2, /* size (0 = byte, 1 = short, 2 = long) */ 545 32, /* bitsize */ 546 FALSE, /* pc_relative */ 547 0, /* bitpos */ 548 complain_overflow_dont, /* complain_on_overflow */ 549 _bfd_mips_elf_generic_reloc, /* special_function */ 550 "R_MIPS_SCN_DISP", /* name */ 551 TRUE, /* partial_inplace */ 552 0xffffffff, /* src_mask */ 553 0xffffffff, /* dst_mask */ 554 FALSE), /* pcrel_offset */ 555 556 HOWTO (R_MIPS_REL16, /* type */ 557 0, /* rightshift */ 558 1, /* size (0 = byte, 1 = short, 2 = long) */ 559 16, /* bitsize */ 560 FALSE, /* pc_relative */ 561 0, /* bitpos */ 562 complain_overflow_signed, /* complain_on_overflow */ 563 _bfd_mips_elf_generic_reloc, /* special_function */ 564 "R_MIPS_REL16", /* name */ 565 TRUE, /* partial_inplace */ 566 0xffff, /* src_mask */ 567 0xffff, /* dst_mask */ 568 FALSE), /* pcrel_offset */ 569 570 /* These two are obsolete. */ 571 EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE), 572 EMPTY_HOWTO (R_MIPS_PJUMP), 573 574 /* Similiar to R_MIPS_REL32, but used for relocations in a GOT section. 575 It must be used for multigot GOT's (and only there). */ 576 HOWTO (R_MIPS_RELGOT, /* type */ 577 0, /* rightshift */ 578 2, /* size (0 = byte, 1 = short, 2 = long) */ 579 32, /* bitsize */ 580 FALSE, /* pc_relative */ 581 0, /* bitpos */ 582 complain_overflow_dont, /* complain_on_overflow */ 583 _bfd_mips_elf_generic_reloc, /* special_function */ 584 "R_MIPS_RELGOT", /* name */ 585 TRUE, /* partial_inplace */ 586 0xffffffff, /* src_mask */ 587 0xffffffff, /* dst_mask */ 588 FALSE), /* pcrel_offset */ 589 590 /* Protected jump conversion. This is an optimization hint. No 591 relocation is required for correctness. */ 592 HOWTO (R_MIPS_JALR, /* type */ 593 0, /* rightshift */ 594 2, /* size (0 = byte, 1 = short, 2 = long) */ 595 32, /* bitsize */ 596 FALSE, /* pc_relative */ 597 0, /* bitpos */ 598 complain_overflow_dont, /* complain_on_overflow */ 599 _bfd_mips_elf_generic_reloc, /* special_function */ 600 "R_MIPS_JALR", /* name */ 601 FALSE, /* partial_inplace */ 602 0x00000000, /* src_mask */ 603 0x00000000, /* dst_mask */ 604 FALSE), /* pcrel_offset */ 605 606 /* TLS GD/LD dynamic relocations. */ 607 HOWTO (R_MIPS_TLS_DTPMOD32, /* type */ 608 0, /* rightshift */ 609 2, /* size (0 = byte, 1 = short, 2 = long) */ 610 32, /* bitsize */ 611 FALSE, /* pc_relative */ 612 0, /* bitpos */ 613 complain_overflow_dont, /* complain_on_overflow */ 614 _bfd_mips_elf_generic_reloc, /* special_function */ 615 "R_MIPS_TLS_DTPMOD32", /* name */ 616 TRUE, /* partial_inplace */ 617 0xffffffff, /* src_mask */ 618 0xffffffff, /* dst_mask */ 619 FALSE), /* pcrel_offset */ 620 621 HOWTO (R_MIPS_TLS_DTPREL32, /* type */ 622 0, /* rightshift */ 623 2, /* size (0 = byte, 1 = short, 2 = long) */ 624 32, /* bitsize */ 625 FALSE, /* pc_relative */ 626 0, /* bitpos */ 627 complain_overflow_dont, /* complain_on_overflow */ 628 _bfd_mips_elf_generic_reloc, /* special_function */ 629 "R_MIPS_TLS_DTPREL32", /* name */ 630 TRUE, /* partial_inplace */ 631 0xffffffff, /* src_mask */ 632 0xffffffff, /* dst_mask */ 633 FALSE), /* pcrel_offset */ 634 635 EMPTY_HOWTO (R_MIPS_TLS_DTPMOD64), 636 EMPTY_HOWTO (R_MIPS_TLS_DTPREL64), 637 638 /* TLS general dynamic variable reference. */ 639 HOWTO (R_MIPS_TLS_GD, /* type */ 640 0, /* rightshift */ 641 2, /* size (0 = byte, 1 = short, 2 = long) */ 642 16, /* bitsize */ 643 FALSE, /* pc_relative */ 644 0, /* bitpos */ 645 complain_overflow_signed, /* complain_on_overflow */ 646 _bfd_mips_elf_generic_reloc, /* special_function */ 647 "R_MIPS_TLS_GD", /* name */ 648 TRUE, /* partial_inplace */ 649 0x0000ffff, /* src_mask */ 650 0x0000ffff, /* dst_mask */ 651 FALSE), /* pcrel_offset */ 652 653 /* TLS local dynamic variable reference. */ 654 HOWTO (R_MIPS_TLS_LDM, /* type */ 655 0, /* rightshift */ 656 2, /* size (0 = byte, 1 = short, 2 = long) */ 657 16, /* bitsize */ 658 FALSE, /* pc_relative */ 659 0, /* bitpos */ 660 complain_overflow_signed, /* complain_on_overflow */ 661 _bfd_mips_elf_generic_reloc, /* special_function */ 662 "R_MIPS_TLS_LDM", /* name */ 663 TRUE, /* partial_inplace */ 664 0x0000ffff, /* src_mask */ 665 0x0000ffff, /* dst_mask */ 666 FALSE), /* pcrel_offset */ 667 668 /* TLS local dynamic offset. */ 669 HOWTO (R_MIPS_TLS_DTPREL_HI16, /* type */ 670 0, /* rightshift */ 671 2, /* size (0 = byte, 1 = short, 2 = long) */ 672 16, /* bitsize */ 673 FALSE, /* pc_relative */ 674 0, /* bitpos */ 675 complain_overflow_signed, /* complain_on_overflow */ 676 _bfd_mips_elf_generic_reloc, /* special_function */ 677 "R_MIPS_TLS_DTPREL_HI16", /* name */ 678 TRUE, /* partial_inplace */ 679 0x0000ffff, /* src_mask */ 680 0x0000ffff, /* dst_mask */ 681 FALSE), /* pcrel_offset */ 682 683 /* TLS local dynamic offset. */ 684 HOWTO (R_MIPS_TLS_DTPREL_LO16, /* type */ 685 0, /* rightshift */ 686 2, /* size (0 = byte, 1 = short, 2 = long) */ 687 16, /* bitsize */ 688 FALSE, /* pc_relative */ 689 0, /* bitpos */ 690 complain_overflow_signed, /* complain_on_overflow */ 691 _bfd_mips_elf_generic_reloc, /* special_function */ 692 "R_MIPS_TLS_DTPREL_LO16", /* name */ 693 TRUE, /* partial_inplace */ 694 0x0000ffff, /* src_mask */ 695 0x0000ffff, /* dst_mask */ 696 FALSE), /* pcrel_offset */ 697 698 /* TLS thread pointer offset. */ 699 HOWTO (R_MIPS_TLS_GOTTPREL, /* type */ 700 0, /* rightshift */ 701 2, /* size (0 = byte, 1 = short, 2 = long) */ 702 16, /* bitsize */ 703 FALSE, /* pc_relative */ 704 0, /* bitpos */ 705 complain_overflow_signed, /* complain_on_overflow */ 706 _bfd_mips_elf_generic_reloc, /* special_function */ 707 "R_MIPS_TLS_GOTTPREL", /* name */ 708 TRUE, /* partial_inplace */ 709 0x0000ffff, /* src_mask */ 710 0x0000ffff, /* dst_mask */ 711 FALSE), /* pcrel_offset */ 712 713 /* TLS IE dynamic relocations. */ 714 HOWTO (R_MIPS_TLS_TPREL32, /* type */ 715 0, /* rightshift */ 716 2, /* size (0 = byte, 1 = short, 2 = long) */ 717 32, /* bitsize */ 718 FALSE, /* pc_relative */ 719 0, /* bitpos */ 720 complain_overflow_dont, /* complain_on_overflow */ 721 _bfd_mips_elf_generic_reloc, /* special_function */ 722 "R_MIPS_TLS_TPREL32", /* name */ 723 TRUE, /* partial_inplace */ 724 0xffffffff, /* src_mask */ 725 0xffffffff, /* dst_mask */ 726 FALSE), /* pcrel_offset */ 727 728 EMPTY_HOWTO (R_MIPS_TLS_TPREL64), 729 730 /* TLS thread pointer offset. */ 731 HOWTO (R_MIPS_TLS_TPREL_HI16, /* type */ 732 0, /* rightshift */ 733 2, /* size (0 = byte, 1 = short, 2 = long) */ 734 16, /* bitsize */ 735 FALSE, /* pc_relative */ 736 0, /* bitpos */ 737 complain_overflow_signed, /* complain_on_overflow */ 738 _bfd_mips_elf_generic_reloc, /* special_function */ 739 "R_MIPS_TLS_TPREL_HI16", /* name */ 740 TRUE, /* partial_inplace */ 741 0x0000ffff, /* src_mask */ 742 0x0000ffff, /* dst_mask */ 743 FALSE), /* pcrel_offset */ 744 745 /* TLS thread pointer offset. */ 746 HOWTO (R_MIPS_TLS_TPREL_LO16, /* type */ 747 0, /* rightshift */ 748 2, /* size (0 = byte, 1 = short, 2 = long) */ 749 16, /* bitsize */ 750 FALSE, /* pc_relative */ 751 0, /* bitpos */ 752 complain_overflow_signed, /* complain_on_overflow */ 753 _bfd_mips_elf_generic_reloc, /* special_function */ 754 "R_MIPS_TLS_TPREL_LO16", /* name */ 755 TRUE, /* partial_inplace */ 756 0x0000ffff, /* src_mask */ 757 0x0000ffff, /* dst_mask */ 758 FALSE), /* pcrel_offset */ 759}; 760 761/* The relocation table used for SHT_RELA sections. */ 762 763static reloc_howto_type elf_mips_howto_table_rela[] = 764{ 765 /* No relocation. */ 766 HOWTO (R_MIPS_NONE, /* type */ 767 0, /* rightshift */ 768 0, /* size (0 = byte, 1 = short, 2 = long) */ 769 0, /* bitsize */ 770 FALSE, /* pc_relative */ 771 0, /* bitpos */ 772 complain_overflow_dont, /* complain_on_overflow */ 773 _bfd_mips_elf_generic_reloc, /* special_function */ 774 "R_MIPS_NONE", /* name */ 775 FALSE, /* partial_inplace */ 776 0, /* src_mask */ 777 0, /* dst_mask */ 778 FALSE), /* pcrel_offset */ 779 780 /* 16 bit relocation. */ 781 HOWTO (R_MIPS_16, /* 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_signed, /* complain_on_overflow */ 788 _bfd_mips_elf_generic_reloc, /* special_function */ 789 "R_MIPS_16", /* name */ 790 FALSE, /* partial_inplace */ 791 0, /* src_mask */ 792 0x0000, /* dst_mask */ 793 FALSE), /* pcrel_offset */ 794 795 /* 32 bit relocation. */ 796 HOWTO (R_MIPS_32, /* type */ 797 0, /* rightshift */ 798 2, /* size (0 = byte, 1 = short, 2 = long) */ 799 32, /* bitsize */ 800 FALSE, /* pc_relative */ 801 0, /* bitpos */ 802 complain_overflow_dont, /* complain_on_overflow */ 803 _bfd_mips_elf_generic_reloc, /* special_function */ 804 "R_MIPS_32", /* name */ 805 FALSE, /* partial_inplace */ 806 0, /* src_mask */ 807 0xffffffff, /* dst_mask */ 808 FALSE), /* pcrel_offset */ 809 810 /* 32 bit symbol relative relocation. */ 811 HOWTO (R_MIPS_REL32, /* type */ 812 0, /* rightshift */ 813 2, /* size (0 = byte, 1 = short, 2 = long) */ 814 32, /* bitsize */ 815 FALSE, /* pc_relative */ 816 0, /* bitpos */ 817 complain_overflow_dont, /* complain_on_overflow */ 818 _bfd_mips_elf_generic_reloc, /* special_function */ 819 "R_MIPS_REL32", /* name */ 820 FALSE, /* partial_inplace */ 821 0, /* src_mask */ 822 0xffffffff, /* dst_mask */ 823 FALSE), /* pcrel_offset */ 824 825 /* 26 bit jump address. */ 826 HOWTO (R_MIPS_26, /* type */ 827 2, /* rightshift */ 828 2, /* size (0 = byte, 1 = short, 2 = long) */ 829 26, /* bitsize */ 830 FALSE, /* pc_relative */ 831 0, /* bitpos */ 832 complain_overflow_dont, /* complain_on_overflow */ 833 /* This needs complex overflow 834 detection, because the upper 36 835 bits must match the PC + 4. */ 836 _bfd_mips_elf_generic_reloc, /* special_function */ 837 "R_MIPS_26", /* name */ 838 FALSE, /* partial_inplace */ 839 0, /* src_mask */ 840 0x03ffffff, /* dst_mask */ 841 FALSE), /* pcrel_offset */ 842 843 /* High 16 bits of symbol value. */ 844 HOWTO (R_MIPS_HI16, /* type */ 845 0, /* rightshift */ 846 2, /* size (0 = byte, 1 = short, 2 = long) */ 847 16, /* bitsize */ 848 FALSE, /* pc_relative */ 849 0, /* bitpos */ 850 complain_overflow_dont, /* complain_on_overflow */ 851 _bfd_mips_elf_generic_reloc, /* special_function */ 852 "R_MIPS_HI16", /* name */ 853 FALSE, /* partial_inplace */ 854 0, /* src_mask */ 855 0x0000ffff, /* dst_mask */ 856 FALSE), /* pcrel_offset */ 857 858 /* Low 16 bits of symbol value. */ 859 HOWTO (R_MIPS_LO16, /* type */ 860 0, /* rightshift */ 861 2, /* size (0 = byte, 1 = short, 2 = long) */ 862 16, /* bitsize */ 863 FALSE, /* pc_relative */ 864 0, /* bitpos */ 865 complain_overflow_dont, /* complain_on_overflow */ 866 _bfd_mips_elf_generic_reloc, /* special_function */ 867 "R_MIPS_LO16", /* name */ 868 FALSE, /* partial_inplace */ 869 0, /* src_mask */ 870 0x0000ffff, /* dst_mask */ 871 FALSE), /* pcrel_offset */ 872 873 /* GP relative reference. */ 874 HOWTO (R_MIPS_GPREL16, /* type */ 875 0, /* rightshift */ 876 2, /* size (0 = byte, 1 = short, 2 = long) */ 877 16, /* bitsize */ 878 FALSE, /* pc_relative */ 879 0, /* bitpos */ 880 complain_overflow_signed, /* complain_on_overflow */ 881 mips_elf_gprel16_reloc, /* special_function */ 882 "R_MIPS_GPREL16", /* name */ 883 FALSE, /* partial_inplace */ 884 0, /* src_mask */ 885 0x0000ffff, /* dst_mask */ 886 FALSE), /* pcrel_offset */ 887 888 /* Reference to literal section. */ 889 HOWTO (R_MIPS_LITERAL, /* type */ 890 0, /* rightshift */ 891 2, /* size (0 = byte, 1 = short, 2 = long) */ 892 16, /* bitsize */ 893 FALSE, /* pc_relative */ 894 0, /* bitpos */ 895 complain_overflow_signed, /* complain_on_overflow */ 896 mips_elf_literal_reloc, /* special_function */ 897 "R_MIPS_LITERAL", /* name */ 898 FALSE, /* partial_inplace */ 899 0, /* src_mask */ 900 0x0000ffff, /* dst_mask */ 901 FALSE), /* pcrel_offset */ 902 903 /* Reference to global offset table. */ 904 HOWTO (R_MIPS_GOT16, /* type */ 905 0, /* rightshift */ 906 2, /* size (0 = byte, 1 = short, 2 = long) */ 907 16, /* bitsize */ 908 FALSE, /* pc_relative */ 909 0, /* bitpos */ 910 complain_overflow_signed, /* complain_on_overflow */ 911 _bfd_mips_elf_generic_reloc, /* special_function */ 912 "R_MIPS_GOT16", /* name */ 913 FALSE, /* partial_inplace */ 914 0, /* src_mask */ 915 0x0000ffff, /* dst_mask */ 916 FALSE), /* pcrel_offset */ 917 918 /* 16 bit PC relative reference. Note that the ABI document has a typo 919 and claims R_MIPS_PC16 to be not rightshifted, rendering it useless. 920 We do the right thing here. */ 921 HOWTO (R_MIPS_PC16, /* type */ 922 2, /* rightshift */ 923 2, /* size (0 = byte, 1 = short, 2 = long) */ 924 16, /* bitsize */ 925 TRUE, /* pc_relative */ 926 0, /* bitpos */ 927 complain_overflow_signed, /* complain_on_overflow */ 928 _bfd_mips_elf_generic_reloc, /* special_function */ 929 "R_MIPS_PC16", /* name */ 930 FALSE, /* partial_inplace */ 931 0, /* src_mask */ 932 0x0000ffff, /* dst_mask */ 933 TRUE), /* pcrel_offset */ 934 935 /* 16 bit call through global offset table. */ 936 HOWTO (R_MIPS_CALL16, /* type */ 937 0, /* rightshift */ 938 2, /* size (0 = byte, 1 = short, 2 = long) */ 939 16, /* bitsize */ 940 FALSE, /* pc_relative */ 941 0, /* bitpos */ 942 complain_overflow_signed, /* complain_on_overflow */ 943 _bfd_mips_elf_generic_reloc, /* special_function */ 944 "R_MIPS_CALL16", /* name */ 945 FALSE, /* partial_inplace */ 946 0, /* src_mask */ 947 0x0000ffff, /* dst_mask */ 948 FALSE), /* pcrel_offset */ 949 950 /* 32 bit GP relative reference. */ 951 HOWTO (R_MIPS_GPREL32, /* type */ 952 0, /* rightshift */ 953 2, /* size (0 = byte, 1 = short, 2 = long) */ 954 32, /* bitsize */ 955 FALSE, /* pc_relative */ 956 0, /* bitpos */ 957 complain_overflow_dont, /* complain_on_overflow */ 958 mips_elf_gprel32_reloc, /* special_function */ 959 "R_MIPS_GPREL32", /* name */ 960 FALSE, /* partial_inplace */ 961 0, /* src_mask */ 962 0xffffffff, /* dst_mask */ 963 FALSE), /* pcrel_offset */ 964 965 EMPTY_HOWTO (13), 966 EMPTY_HOWTO (14), 967 EMPTY_HOWTO (15), 968 969 /* A 5 bit shift field. */ 970 HOWTO (R_MIPS_SHIFT5, /* type */ 971 0, /* rightshift */ 972 2, /* size (0 = byte, 1 = short, 2 = long) */ 973 5, /* bitsize */ 974 FALSE, /* pc_relative */ 975 6, /* bitpos */ 976 complain_overflow_bitfield, /* complain_on_overflow */ 977 _bfd_mips_elf_generic_reloc, /* special_function */ 978 "R_MIPS_SHIFT5", /* name */ 979 FALSE, /* partial_inplace */ 980 0, /* src_mask */ 981 0x000007c0, /* dst_mask */ 982 FALSE), /* pcrel_offset */ 983 984 /* A 6 bit shift field. */ 985 HOWTO (R_MIPS_SHIFT6, /* type */ 986 0, /* rightshift */ 987 2, /* size (0 = byte, 1 = short, 2 = long) */ 988 6, /* bitsize */ 989 FALSE, /* pc_relative */ 990 6, /* bitpos */ 991 complain_overflow_bitfield, /* complain_on_overflow */ 992 mips_elf_shift6_reloc, /* special_function */ 993 "R_MIPS_SHIFT6", /* name */ 994 FALSE, /* partial_inplace */ 995 0, /* src_mask */ 996 0x000007c4, /* dst_mask */ 997 FALSE), /* pcrel_offset */ 998 999 /* 64 bit relocation. */ 1000 HOWTO (R_MIPS_64, /* type */ 1001 0, /* rightshift */ 1002 4, /* size (0 = byte, 1 = short, 2 = long) */ 1003 64, /* bitsize */ 1004 FALSE, /* pc_relative */ 1005 0, /* bitpos */ 1006 complain_overflow_dont, /* complain_on_overflow */ 1007 _bfd_mips_elf_generic_reloc, /* special_function */ 1008 "R_MIPS_64", /* name */ 1009 FALSE, /* partial_inplace */ 1010 0, /* src_mask */ 1011 MINUS_ONE, /* dst_mask */ 1012 FALSE), /* pcrel_offset */ 1013 1014 /* Displacement in the global offset table. */ 1015 HOWTO (R_MIPS_GOT_DISP, /* type */ 1016 0, /* rightshift */ 1017 2, /* size (0 = byte, 1 = short, 2 = long) */ 1018 16, /* bitsize */ 1019 FALSE, /* pc_relative */ 1020 0, /* bitpos */ 1021 complain_overflow_signed, /* complain_on_overflow */ 1022 _bfd_mips_elf_generic_reloc, /* special_function */ 1023 "R_MIPS_GOT_DISP", /* name */ 1024 FALSE, /* partial_inplace */ 1025 0, /* src_mask */ 1026 0x0000ffff, /* dst_mask */ 1027 FALSE), /* pcrel_offset */ 1028 1029 /* Displacement to page pointer in the global offset table. */ 1030 HOWTO (R_MIPS_GOT_PAGE, /* type */ 1031 0, /* rightshift */ 1032 2, /* size (0 = byte, 1 = short, 2 = long) */ 1033 16, /* bitsize */ 1034 FALSE, /* pc_relative */ 1035 0, /* bitpos */ 1036 complain_overflow_signed, /* complain_on_overflow */ 1037 _bfd_mips_elf_generic_reloc, /* special_function */ 1038 "R_MIPS_GOT_PAGE", /* name */ 1039 FALSE, /* partial_inplace */ 1040 0, /* src_mask */ 1041 0x0000ffff, /* dst_mask */ 1042 FALSE), /* pcrel_offset */ 1043 1044 /* Offset from page pointer in the global offset table. */ 1045 HOWTO (R_MIPS_GOT_OFST, /* type */ 1046 0, /* rightshift */ 1047 2, /* size (0 = byte, 1 = short, 2 = long) */ 1048 16, /* bitsize */ 1049 FALSE, /* pc_relative */ 1050 0, /* bitpos */ 1051 complain_overflow_signed, /* complain_on_overflow */ 1052 _bfd_mips_elf_generic_reloc, /* special_function */ 1053 "R_MIPS_GOT_OFST", /* name */ 1054 FALSE, /* partial_inplace */ 1055 0, /* src_mask */ 1056 0x0000ffff, /* dst_mask */ 1057 FALSE), /* pcrel_offset */ 1058 1059 /* High 16 bits of displacement in global offset table. */ 1060 HOWTO (R_MIPS_GOT_HI16, /* type */ 1061 0, /* rightshift */ 1062 2, /* size (0 = byte, 1 = short, 2 = long) */ 1063 16, /* bitsize */ 1064 FALSE, /* pc_relative */ 1065 0, /* bitpos */ 1066 complain_overflow_dont, /* complain_on_overflow */ 1067 _bfd_mips_elf_generic_reloc, /* special_function */ 1068 "R_MIPS_GOT_HI16", /* name */ 1069 FALSE, /* partial_inplace */ 1070 0, /* src_mask */ 1071 0x0000ffff, /* dst_mask */ 1072 FALSE), /* pcrel_offset */ 1073 1074 /* Low 16 bits of displacement in global offset table. */ 1075 HOWTO (R_MIPS_GOT_LO16, /* type */ 1076 0, /* rightshift */ 1077 2, /* size (0 = byte, 1 = short, 2 = long) */ 1078 16, /* bitsize */ 1079 FALSE, /* pc_relative */ 1080 0, /* bitpos */ 1081 complain_overflow_dont, /* complain_on_overflow */ 1082 _bfd_mips_elf_generic_reloc, /* special_function */ 1083 "R_MIPS_GOT_LO16", /* name */ 1084 FALSE, /* partial_inplace */ 1085 0, /* src_mask */ 1086 0x0000ffff, /* dst_mask */ 1087 FALSE), /* pcrel_offset */ 1088 1089 /* 64 bit subtraction. */ 1090 HOWTO (R_MIPS_SUB, /* type */ 1091 0, /* rightshift */ 1092 4, /* size (0 = byte, 1 = short, 2 = long) */ 1093 64, /* bitsize */ 1094 FALSE, /* pc_relative */ 1095 0, /* bitpos */ 1096 complain_overflow_dont, /* complain_on_overflow */ 1097 _bfd_mips_elf_generic_reloc, /* special_function */ 1098 "R_MIPS_SUB", /* name */ 1099 FALSE, /* partial_inplace */ 1100 0, /* src_mask */ 1101 MINUS_ONE, /* dst_mask */ 1102 FALSE), /* pcrel_offset */ 1103 1104 /* Insert the addend as an instruction. */ 1105 /* FIXME: Not handled correctly. */ 1106 HOWTO (R_MIPS_INSERT_A, /* type */ 1107 0, /* rightshift */ 1108 2, /* size (0 = byte, 1 = short, 2 = long) */ 1109 32, /* bitsize */ 1110 FALSE, /* pc_relative */ 1111 0, /* bitpos */ 1112 complain_overflow_dont, /* complain_on_overflow */ 1113 _bfd_mips_elf_generic_reloc, /* special_function */ 1114 "R_MIPS_INSERT_A", /* name */ 1115 FALSE, /* partial_inplace */ 1116 0, /* src_mask */ 1117 0xffffffff, /* dst_mask */ 1118 FALSE), /* pcrel_offset */ 1119 1120 /* Insert the addend as an instruction, and change all relocations 1121 to refer to the old instruction at the address. */ 1122 /* FIXME: Not handled correctly. */ 1123 HOWTO (R_MIPS_INSERT_B, /* type */ 1124 0, /* rightshift */ 1125 2, /* size (0 = byte, 1 = short, 2 = long) */ 1126 32, /* bitsize */ 1127 FALSE, /* pc_relative */ 1128 0, /* bitpos */ 1129 complain_overflow_dont, /* complain_on_overflow */ 1130 _bfd_mips_elf_generic_reloc, /* special_function */ 1131 "R_MIPS_INSERT_B", /* name */ 1132 FALSE, /* partial_inplace */ 1133 0, /* src_mask */ 1134 0xffffffff, /* dst_mask */ 1135 FALSE), /* pcrel_offset */ 1136 1137 /* Delete a 32 bit instruction. */ 1138 /* FIXME: Not handled correctly. */ 1139 HOWTO (R_MIPS_DELETE, /* type */ 1140 0, /* rightshift */ 1141 2, /* size (0 = byte, 1 = short, 2 = long) */ 1142 32, /* bitsize */ 1143 FALSE, /* pc_relative */ 1144 0, /* bitpos */ 1145 complain_overflow_dont, /* complain_on_overflow */ 1146 _bfd_mips_elf_generic_reloc, /* special_function */ 1147 "R_MIPS_DELETE", /* name */ 1148 FALSE, /* partial_inplace */ 1149 0, /* src_mask */ 1150 0xffffffff, /* dst_mask */ 1151 FALSE), /* pcrel_offset */ 1152 1153 /* Get the higher value of a 64 bit addend. */ 1154 HOWTO (R_MIPS_HIGHER, /* type */ 1155 0, /* rightshift */ 1156 2, /* size (0 = byte, 1 = short, 2 = long) */ 1157 16, /* bitsize */ 1158 FALSE, /* pc_relative */ 1159 0, /* bitpos */ 1160 complain_overflow_dont, /* complain_on_overflow */ 1161 _bfd_mips_elf_generic_reloc, /* special_function */ 1162 "R_MIPS_HIGHER", /* name */ 1163 FALSE, /* partial_inplace */ 1164 0, /* src_mask */ 1165 0x0000ffff, /* dst_mask */ 1166 FALSE), /* pcrel_offset */ 1167 1168 /* Get the highest value of a 64 bit addend. */ 1169 HOWTO (R_MIPS_HIGHEST, /* type */ 1170 0, /* rightshift */ 1171 2, /* size (0 = byte, 1 = short, 2 = long) */ 1172 16, /* bitsize */ 1173 FALSE, /* pc_relative */ 1174 0, /* bitpos */ 1175 complain_overflow_dont, /* complain_on_overflow */ 1176 _bfd_mips_elf_generic_reloc, /* special_function */ 1177 "R_MIPS_HIGHEST", /* name */ 1178 FALSE, /* partial_inplace */ 1179 0, /* src_mask */ 1180 0x0000ffff, /* dst_mask */ 1181 FALSE), /* pcrel_offset */ 1182 1183 /* High 16 bits of displacement in global offset table. */ 1184 HOWTO (R_MIPS_CALL_HI16, /* type */ 1185 0, /* rightshift */ 1186 2, /* size (0 = byte, 1 = short, 2 = long) */ 1187 16, /* bitsize */ 1188 FALSE, /* pc_relative */ 1189 0, /* bitpos */ 1190 complain_overflow_dont, /* complain_on_overflow */ 1191 _bfd_mips_elf_generic_reloc, /* special_function */ 1192 "R_MIPS_CALL_HI16", /* name */ 1193 FALSE, /* partial_inplace */ 1194 0, /* src_mask */ 1195 0x0000ffff, /* dst_mask */ 1196 FALSE), /* pcrel_offset */ 1197 1198 /* Low 16 bits of displacement in global offset table. */ 1199 HOWTO (R_MIPS_CALL_LO16, /* type */ 1200 0, /* rightshift */ 1201 2, /* size (0 = byte, 1 = short, 2 = long) */ 1202 16, /* bitsize */ 1203 FALSE, /* pc_relative */ 1204 0, /* bitpos */ 1205 complain_overflow_dont, /* complain_on_overflow */ 1206 _bfd_mips_elf_generic_reloc, /* special_function */ 1207 "R_MIPS_CALL_LO16", /* name */ 1208 FALSE, /* partial_inplace */ 1209 0, /* src_mask */ 1210 0x0000ffff, /* dst_mask */ 1211 FALSE), /* pcrel_offset */ 1212 1213 /* Section displacement, used by an associated event location section. */ 1214 HOWTO (R_MIPS_SCN_DISP, /* type */ 1215 0, /* rightshift */ 1216 2, /* size (0 = byte, 1 = short, 2 = long) */ 1217 32, /* bitsize */ 1218 FALSE, /* pc_relative */ 1219 0, /* bitpos */ 1220 complain_overflow_dont, /* complain_on_overflow */ 1221 _bfd_mips_elf_generic_reloc, /* special_function */ 1222 "R_MIPS_SCN_DISP", /* name */ 1223 FALSE, /* partial_inplace */ 1224 0, /* src_mask */ 1225 0xffffffff, /* dst_mask */ 1226 FALSE), /* pcrel_offset */ 1227 1228 /* 16 bit relocation. */ 1229 HOWTO (R_MIPS_REL16, /* type */ 1230 0, /* rightshift */ 1231 1, /* size (0 = byte, 1 = short, 2 = long) */ 1232 16, /* bitsize */ 1233 FALSE, /* pc_relative */ 1234 0, /* bitpos */ 1235 complain_overflow_signed, /* complain_on_overflow */ 1236 _bfd_mips_elf_generic_reloc, /* special_function */ 1237 "R_MIPS_REL16", /* name */ 1238 FALSE, /* partial_inplace */ 1239 0, /* src_mask */ 1240 0xffff, /* dst_mask */ 1241 FALSE), /* pcrel_offset */ 1242 1243 /* These two are obsolete. */ 1244 EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE), 1245 EMPTY_HOWTO (R_MIPS_PJUMP), 1246 1247 /* Similiar to R_MIPS_REL32, but used for relocations in a GOT section. 1248 It must be used for multigot GOT's (and only there). */ 1249 HOWTO (R_MIPS_RELGOT, /* type */ 1250 0, /* rightshift */ 1251 2, /* size (0 = byte, 1 = short, 2 = long) */ 1252 32, /* bitsize */ 1253 FALSE, /* pc_relative */ 1254 0, /* bitpos */ 1255 complain_overflow_dont, /* complain_on_overflow */ 1256 _bfd_mips_elf_generic_reloc, /* special_function */ 1257 "R_MIPS_RELGOT", /* name */ 1258 FALSE, /* partial_inplace */ 1259 0, /* src_mask */ 1260 0xffffffff, /* dst_mask */ 1261 FALSE), /* pcrel_offset */ 1262 1263 /* Protected jump conversion. This is an optimization hint. No 1264 relocation is required for correctness. */ 1265 HOWTO (R_MIPS_JALR, /* type */ 1266 0, /* rightshift */ 1267 2, /* size (0 = byte, 1 = short, 2 = long) */ 1268 32, /* bitsize */ 1269 FALSE, /* pc_relative */ 1270 0, /* bitpos */ 1271 complain_overflow_dont, /* complain_on_overflow */ 1272 _bfd_mips_elf_generic_reloc, /* special_function */ 1273 "R_MIPS_JALR", /* name */ 1274 FALSE, /* partial_inplace */ 1275 0, /* src_mask */ 1276 0, /* dst_mask */ 1277 FALSE), /* pcrel_offset */ 1278 1279 /* TLS GD/LD dynamic relocations. */ 1280 HOWTO (R_MIPS_TLS_DTPMOD32, /* type */ 1281 0, /* rightshift */ 1282 2, /* size (0 = byte, 1 = short, 2 = long) */ 1283 32, /* bitsize */ 1284 FALSE, /* pc_relative */ 1285 0, /* bitpos */ 1286 complain_overflow_dont, /* complain_on_overflow */ 1287 _bfd_mips_elf_generic_reloc, /* special_function */ 1288 "R_MIPS_TLS_DTPMOD32", /* name */ 1289 TRUE, /* partial_inplace */ 1290 0xffffffff, /* src_mask */ 1291 0xffffffff, /* dst_mask */ 1292 FALSE), /* pcrel_offset */ 1293 1294 HOWTO (R_MIPS_TLS_DTPREL32, /* type */ 1295 0, /* rightshift */ 1296 2, /* size (0 = byte, 1 = short, 2 = long) */ 1297 32, /* bitsize */ 1298 FALSE, /* pc_relative */ 1299 0, /* bitpos */ 1300 complain_overflow_dont, /* complain_on_overflow */ 1301 _bfd_mips_elf_generic_reloc, /* special_function */ 1302 "R_MIPS_TLS_DTPREL32", /* name */ 1303 TRUE, /* partial_inplace */ 1304 0xffffffff, /* src_mask */ 1305 0xffffffff, /* dst_mask */ 1306 FALSE), /* pcrel_offset */ 1307 1308 EMPTY_HOWTO (R_MIPS_TLS_DTPMOD64), 1309 EMPTY_HOWTO (R_MIPS_TLS_DTPREL64), 1310 1311 /* TLS general dynamic variable reference. */ 1312 HOWTO (R_MIPS_TLS_GD, /* type */ 1313 0, /* rightshift */ 1314 2, /* size (0 = byte, 1 = short, 2 = long) */ 1315 16, /* bitsize */ 1316 FALSE, /* pc_relative */ 1317 0, /* bitpos */ 1318 complain_overflow_signed, /* complain_on_overflow */ 1319 _bfd_mips_elf_generic_reloc, /* special_function */ 1320 "R_MIPS_TLS_GD", /* name */ 1321 TRUE, /* partial_inplace */ 1322 0x0000ffff, /* src_mask */ 1323 0x0000ffff, /* dst_mask */ 1324 FALSE), /* pcrel_offset */ 1325 1326 /* TLS local dynamic variable reference. */ 1327 HOWTO (R_MIPS_TLS_LDM, /* type */ 1328 0, /* rightshift */ 1329 2, /* size (0 = byte, 1 = short, 2 = long) */ 1330 16, /* bitsize */ 1331 FALSE, /* pc_relative */ 1332 0, /* bitpos */ 1333 complain_overflow_signed, /* complain_on_overflow */ 1334 _bfd_mips_elf_generic_reloc, /* special_function */ 1335 "R_MIPS_TLS_LDM", /* name */ 1336 TRUE, /* partial_inplace */ 1337 0x0000ffff, /* src_mask */ 1338 0x0000ffff, /* dst_mask */ 1339 FALSE), /* pcrel_offset */ 1340 1341 /* TLS local dynamic offset. */ 1342 HOWTO (R_MIPS_TLS_DTPREL_HI16, /* type */ 1343 0, /* rightshift */ 1344 2, /* size (0 = byte, 1 = short, 2 = long) */ 1345 16, /* bitsize */ 1346 FALSE, /* pc_relative */ 1347 0, /* bitpos */ 1348 complain_overflow_signed, /* complain_on_overflow */ 1349 _bfd_mips_elf_generic_reloc, /* special_function */ 1350 "R_MIPS_TLS_DTPREL_HI16", /* name */ 1351 TRUE, /* partial_inplace */ 1352 0x0000ffff, /* src_mask */ 1353 0x0000ffff, /* dst_mask */ 1354 FALSE), /* pcrel_offset */ 1355 1356 /* TLS local dynamic offset. */ 1357 HOWTO (R_MIPS_TLS_DTPREL_LO16, /* type */ 1358 0, /* rightshift */ 1359 2, /* size (0 = byte, 1 = short, 2 = long) */ 1360 16, /* bitsize */ 1361 FALSE, /* pc_relative */ 1362 0, /* bitpos */ 1363 complain_overflow_signed, /* complain_on_overflow */ 1364 _bfd_mips_elf_generic_reloc, /* special_function */ 1365 "R_MIPS_TLS_DTPREL_LO16", /* name */ 1366 TRUE, /* partial_inplace */ 1367 0x0000ffff, /* src_mask */ 1368 0x0000ffff, /* dst_mask */ 1369 FALSE), /* pcrel_offset */ 1370 1371 /* TLS thread pointer offset. */ 1372 HOWTO (R_MIPS_TLS_GOTTPREL, /* type */ 1373 0, /* rightshift */ 1374 2, /* size (0 = byte, 1 = short, 2 = long) */ 1375 16, /* bitsize */ 1376 FALSE, /* pc_relative */ 1377 0, /* bitpos */ 1378 complain_overflow_signed, /* complain_on_overflow */ 1379 _bfd_mips_elf_generic_reloc, /* special_function */ 1380 "R_MIPS_TLS_GOTTPREL", /* name */ 1381 TRUE, /* partial_inplace */ 1382 0x0000ffff, /* src_mask */ 1383 0x0000ffff, /* dst_mask */ 1384 FALSE), /* pcrel_offset */ 1385 1386 /* TLS IE dynamic relocations. */ 1387 HOWTO (R_MIPS_TLS_TPREL32, /* type */ 1388 0, /* rightshift */ 1389 2, /* size (0 = byte, 1 = short, 2 = long) */ 1390 32, /* bitsize */ 1391 FALSE, /* pc_relative */ 1392 0, /* bitpos */ 1393 complain_overflow_dont, /* complain_on_overflow */ 1394 _bfd_mips_elf_generic_reloc, /* special_function */ 1395 "R_MIPS_TLS_TPREL32", /* name */ 1396 TRUE, /* partial_inplace */ 1397 0xffffffff, /* src_mask */ 1398 0xffffffff, /* dst_mask */ 1399 FALSE), /* pcrel_offset */ 1400 1401 EMPTY_HOWTO (R_MIPS_TLS_TPREL64), 1402 1403 /* TLS thread pointer offset. */ 1404 HOWTO (R_MIPS_TLS_TPREL_HI16, /* type */ 1405 0, /* rightshift */ 1406 2, /* size (0 = byte, 1 = short, 2 = long) */ 1407 16, /* bitsize */ 1408 FALSE, /* pc_relative */ 1409 0, /* bitpos */ 1410 complain_overflow_signed, /* complain_on_overflow */ 1411 _bfd_mips_elf_generic_reloc, /* special_function */ 1412 "R_MIPS_TLS_TPREL_HI16", /* name */ 1413 TRUE, /* partial_inplace */ 1414 0x0000ffff, /* src_mask */ 1415 0x0000ffff, /* dst_mask */ 1416 FALSE), /* pcrel_offset */ 1417 1418 /* TLS thread pointer offset. */ 1419 HOWTO (R_MIPS_TLS_TPREL_LO16, /* type */ 1420 0, /* rightshift */ 1421 2, /* size (0 = byte, 1 = short, 2 = long) */ 1422 16, /* bitsize */ 1423 FALSE, /* pc_relative */ 1424 0, /* bitpos */ 1425 complain_overflow_signed, /* complain_on_overflow */ 1426 _bfd_mips_elf_generic_reloc, /* special_function */ 1427 "R_MIPS_TLS_TPREL_LO16", /* name */ 1428 TRUE, /* partial_inplace */ 1429 0x0000ffff, /* src_mask */ 1430 0x0000ffff, /* dst_mask */ 1431 FALSE), /* pcrel_offset */ 1432}; 1433 1434static reloc_howto_type elf_mips16_howto_table_rel[] = 1435{ 1436 /* The reloc used for the mips16 jump instruction. */ 1437 HOWTO (R_MIPS16_26, /* type */ 1438 2, /* rightshift */ 1439 2, /* size (0 = byte, 1 = short, 2 = long) */ 1440 26, /* bitsize */ 1441 FALSE, /* pc_relative */ 1442 0, /* bitpos */ 1443 complain_overflow_dont, /* complain_on_overflow */ 1444 /* This needs complex overflow 1445 detection, because the upper four 1446 bits must match the PC. */ 1447 mips16_jump_reloc, /* special_function */ 1448 "R_MIPS16_26", /* name */ 1449 TRUE, /* partial_inplace */ 1450 0x3ffffff, /* src_mask */ 1451 0x3ffffff, /* dst_mask */ 1452 FALSE), /* pcrel_offset */ 1453 1454 /* The reloc used for the mips16 gprel instruction. */ 1455 HOWTO (R_MIPS16_GPREL, /* type */ 1456 0, /* rightshift */ 1457 2, /* size (0 = byte, 1 = short, 2 = long) */ 1458 16, /* bitsize */ 1459 FALSE, /* pc_relative */ 1460 0, /* bitpos */ 1461 complain_overflow_signed, /* complain_on_overflow */ 1462 mips16_gprel_reloc, /* special_function */ 1463 "R_MIPS16_GPREL", /* name */ 1464 TRUE, /* partial_inplace */ 1465 0x0000ffff, /* src_mask */ 1466 0x0000ffff, /* dst_mask */ 1467 FALSE), /* pcrel_offset */ 1468 1469 /* A placeholder for MIPS16 reference to global offset table. */ 1470 EMPTY_HOWTO (R_MIPS16_GOT16), 1471 1472 /* A placeholder for MIPS16 16 bit call through global offset table. */ 1473 EMPTY_HOWTO (R_MIPS16_CALL16), 1474 1475 /* MIPS16 high 16 bits of symbol value. */ 1476 HOWTO (R_MIPS16_HI16, /* type */ 1477 16, /* rightshift */ 1478 2, /* size (0 = byte, 1 = short, 2 = long) */ 1479 16, /* bitsize */ 1480 FALSE, /* pc_relative */ 1481 0, /* bitpos */ 1482 complain_overflow_dont, /* complain_on_overflow */ 1483 _bfd_mips_elf_hi16_reloc, /* special_function */ 1484 "R_MIPS16_HI16", /* name */ 1485 TRUE, /* partial_inplace */ 1486 0x0000ffff, /* src_mask */ 1487 0x0000ffff, /* dst_mask */ 1488 FALSE), /* pcrel_offset */ 1489 1490 /* MIPS16 low 16 bits of symbol value. */ 1491 HOWTO (R_MIPS16_LO16, /* type */ 1492 0, /* rightshift */ 1493 2, /* size (0 = byte, 1 = short, 2 = long) */ 1494 16, /* bitsize */ 1495 FALSE, /* pc_relative */ 1496 0, /* bitpos */ 1497 complain_overflow_dont, /* complain_on_overflow */ 1498 _bfd_mips_elf_lo16_reloc, /* special_function */ 1499 "R_MIPS16_LO16", /* name */ 1500 TRUE, /* partial_inplace */ 1501 0x0000ffff, /* src_mask */ 1502 0x0000ffff, /* dst_mask */ 1503 FALSE), /* pcrel_offset */ 1504}; 1505 1506static reloc_howto_type elf_mips16_howto_table_rela[] = 1507{ 1508 /* The reloc used for the mips16 jump instruction. */ 1509 HOWTO (R_MIPS16_26, /* type */ 1510 2, /* rightshift */ 1511 2, /* size (0 = byte, 1 = short, 2 = long) */ 1512 26, /* bitsize */ 1513 FALSE, /* pc_relative */ 1514 0, /* bitpos */ 1515 complain_overflow_dont, /* complain_on_overflow */ 1516 /* This needs complex overflow 1517 detection, because the upper four 1518 bits must match the PC. */ 1519 mips16_jump_reloc, /* special_function */ 1520 "R_MIPS16_26", /* name */ 1521 FALSE, /* partial_inplace */ 1522 0x3ffffff, /* src_mask */ 1523 0x3ffffff, /* dst_mask */ 1524 FALSE), /* pcrel_offset */ 1525 1526 /* The reloc used for the mips16 gprel instruction. */ 1527 HOWTO (R_MIPS16_GPREL, /* type */ 1528 0, /* rightshift */ 1529 2, /* size (0 = byte, 1 = short, 2 = long) */ 1530 16, /* bitsize */ 1531 FALSE, /* pc_relative */ 1532 0, /* bitpos */ 1533 complain_overflow_signed, /* complain_on_overflow */ 1534 mips16_gprel_reloc, /* special_function */ 1535 "R_MIPS16_GPREL", /* name */ 1536 FALSE, /* partial_inplace */ 1537 0x0000ffff, /* src_mask */ 1538 0x0000ffff, /* dst_mask */ 1539 FALSE), /* pcrel_offset */ 1540 1541 /* A placeholder for MIPS16 reference to global offset table. */ 1542 EMPTY_HOWTO (R_MIPS16_GOT16), 1543 1544 /* A placeholder for MIPS16 16 bit call through global offset table. */ 1545 EMPTY_HOWTO (R_MIPS16_CALL16), 1546 1547 /* MIPS16 high 16 bits of symbol value. */ 1548 HOWTO (R_MIPS16_HI16, /* type */ 1549 16, /* rightshift */ 1550 2, /* size (0 = byte, 1 = short, 2 = long) */ 1551 16, /* bitsize */ 1552 FALSE, /* pc_relative */ 1553 0, /* bitpos */ 1554 complain_overflow_dont, /* complain_on_overflow */ 1555 _bfd_mips_elf_hi16_reloc, /* special_function */ 1556 "R_MIPS16_HI16", /* name */ 1557 FALSE, /* partial_inplace */ 1558 0x0000ffff, /* src_mask */ 1559 0x0000ffff, /* dst_mask */ 1560 FALSE), /* pcrel_offset */ 1561 1562 /* MIPS16 low 16 bits of symbol value. */ 1563 HOWTO (R_MIPS16_LO16, /* type */ 1564 0, /* rightshift */ 1565 2, /* size (0 = byte, 1 = short, 2 = long) */ 1566 16, /* bitsize */ 1567 FALSE, /* pc_relative */ 1568 0, /* bitpos */ 1569 complain_overflow_dont, /* complain_on_overflow */ 1570 _bfd_mips_elf_lo16_reloc, /* special_function */ 1571 "R_MIPS16_LO16", /* name */ 1572 FALSE, /* partial_inplace */ 1573 0x0000ffff, /* src_mask */ 1574 0x0000ffff, /* dst_mask */ 1575 FALSE), /* pcrel_offset */ 1576}; 1577 1578/* GNU extension to record C++ vtable hierarchy */ 1579static reloc_howto_type elf_mips_gnu_vtinherit_howto = 1580 HOWTO (R_MIPS_GNU_VTINHERIT, /* type */ 1581 0, /* rightshift */ 1582 2, /* size (0 = byte, 1 = short, 2 = long) */ 1583 0, /* bitsize */ 1584 FALSE, /* pc_relative */ 1585 0, /* bitpos */ 1586 complain_overflow_dont, /* complain_on_overflow */ 1587 NULL, /* special_function */ 1588 "R_MIPS_GNU_VTINHERIT", /* name */ 1589 FALSE, /* partial_inplace */ 1590 0, /* src_mask */ 1591 0, /* dst_mask */ 1592 FALSE); /* pcrel_offset */ 1593 1594/* GNU extension to record C++ vtable member usage */ 1595static reloc_howto_type elf_mips_gnu_vtentry_howto = 1596 HOWTO (R_MIPS_GNU_VTENTRY, /* type */ 1597 0, /* rightshift */ 1598 2, /* size (0 = byte, 1 = short, 2 = long) */ 1599 0, /* bitsize */ 1600 FALSE, /* pc_relative */ 1601 0, /* bitpos */ 1602 complain_overflow_dont, /* complain_on_overflow */ 1603 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 1604 "R_MIPS_GNU_VTENTRY", /* name */ 1605 FALSE, /* partial_inplace */ 1606 0, /* src_mask */ 1607 0, /* dst_mask */ 1608 FALSE); /* pcrel_offset */ 1609 1610/* 16 bit offset for pc-relative branches. */ 1611static reloc_howto_type elf_mips_gnu_rel16_s2 = 1612 HOWTO (R_MIPS_GNU_REL16_S2, /* type */ 1613 2, /* rightshift */ 1614 2, /* size (0 = byte, 1 = short, 2 = long) */ 1615 16, /* bitsize */ 1616 TRUE, /* pc_relative */ 1617 0, /* bitpos */ 1618 complain_overflow_signed, /* complain_on_overflow */ 1619 _bfd_mips_elf_generic_reloc, /* special_function */ 1620 "R_MIPS_GNU_REL16_S2", /* name */ 1621 TRUE, /* partial_inplace */ 1622 0x0000ffff, /* src_mask */ 1623 0x0000ffff, /* dst_mask */ 1624 TRUE); /* pcrel_offset */ 1625 1626/* 16 bit offset for pc-relative branches. */ 1627static reloc_howto_type elf_mips_gnu_rela16_s2 = 1628 HOWTO (R_MIPS_GNU_REL16_S2, /* type */ 1629 2, /* rightshift */ 1630 2, /* size (0 = byte, 1 = short, 2 = long) */ 1631 16, /* bitsize */ 1632 TRUE, /* pc_relative */ 1633 0, /* bitpos */ 1634 complain_overflow_signed, /* complain_on_overflow */ 1635 _bfd_mips_elf_generic_reloc, /* special_function */ 1636 "R_MIPS_GNU_REL16_S2", /* name */ 1637 FALSE, /* partial_inplace */ 1638 0, /* src_mask */ 1639 0x0000ffff, /* dst_mask */ 1640 TRUE); /* pcrel_offset */ 1641 1642/* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a 1643 dangerous relocation. */ 1644 1645static bfd_boolean 1646mips_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp) 1647{ 1648 unsigned int count; 1649 asymbol **sym; 1650 unsigned int i; 1651 1652 /* If we've already figured out what GP will be, just return it. */ 1653 *pgp = _bfd_get_gp_value (output_bfd); 1654 if (*pgp) 1655 return TRUE; 1656 1657 count = bfd_get_symcount (output_bfd); 1658 sym = bfd_get_outsymbols (output_bfd); 1659 1660 /* The linker script will have created a symbol named `_gp' with the 1661 appropriate value. */ 1662 if (sym == NULL) 1663 i = count; 1664 else 1665 { 1666 for (i = 0; i < count; i++, sym++) 1667 { 1668 register const char *name; 1669 1670 name = bfd_asymbol_name (*sym); 1671 if (*name == '_' && strcmp (name, "_gp") == 0) 1672 { 1673 *pgp = bfd_asymbol_value (*sym); 1674 _bfd_set_gp_value (output_bfd, *pgp); 1675 break; 1676 } 1677 } 1678 } 1679 1680 if (i >= count) 1681 { 1682 /* Only get the error once. */ 1683 *pgp = 4; 1684 _bfd_set_gp_value (output_bfd, *pgp); 1685 return FALSE; 1686 } 1687 1688 return TRUE; 1689} 1690 1691/* We have to figure out the gp value, so that we can adjust the 1692 symbol value correctly. We look up the symbol _gp in the output 1693 BFD. If we can't find it, we're stuck. We cache it in the ELF 1694 target data. We don't need to adjust the symbol value for an 1695 external symbol if we are producing relocatable output. */ 1696 1697static bfd_reloc_status_type 1698mips_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable, 1699 char **error_message, bfd_vma *pgp) 1700{ 1701 if (bfd_is_und_section (symbol->section) 1702 && ! relocatable) 1703 { 1704 *pgp = 0; 1705 return bfd_reloc_undefined; 1706 } 1707 1708 *pgp = _bfd_get_gp_value (output_bfd); 1709 if (*pgp == 0 1710 && (! relocatable 1711 || (symbol->flags & BSF_SECTION_SYM) != 0)) 1712 { 1713 if (relocatable) 1714 { 1715 /* Make up a value. */ 1716 *pgp = symbol->section->output_section->vma /*+ 0x4000*/; 1717 _bfd_set_gp_value (output_bfd, *pgp); 1718 } 1719 else if (!mips_elf_assign_gp (output_bfd, pgp)) 1720 { 1721 *error_message = 1722 (char *) _("GP relative relocation when _gp not defined"); 1723 return bfd_reloc_dangerous; 1724 } 1725 } 1726 1727 return bfd_reloc_ok; 1728} 1729 1730/* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must 1731 become the offset from the gp register. */ 1732 1733static bfd_reloc_status_type 1734mips_elf_gprel16_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, 1735 asymbol *symbol, void *data ATTRIBUTE_UNUSED, 1736 asection *input_section, bfd *output_bfd, 1737 char **error_message ATTRIBUTE_UNUSED) 1738{ 1739 bfd_boolean relocatable; 1740 bfd_reloc_status_type ret; 1741 bfd_vma gp; 1742 1743 if (output_bfd != NULL) 1744 relocatable = TRUE; 1745 else 1746 { 1747 relocatable = FALSE; 1748 output_bfd = symbol->section->output_section->owner; 1749 } 1750 1751 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message, 1752 &gp); 1753 if (ret != bfd_reloc_ok) 1754 return ret; 1755 1756 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, 1757 input_section, relocatable, 1758 data, gp); 1759} 1760 1761/* Do a R_MIPS_LITERAL relocation. */ 1762 1763static bfd_reloc_status_type 1764mips_elf_literal_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 1765 void *data, asection *input_section, bfd *output_bfd, 1766 char **error_message) 1767{ 1768 bfd_boolean relocatable; 1769 bfd_reloc_status_type ret; 1770 bfd_vma gp; 1771 1772 /* R_MIPS_LITERAL relocations are defined for local symbols only. */ 1773 if (output_bfd != NULL 1774 && (symbol->flags & BSF_SECTION_SYM) == 0 1775 && (symbol->flags & BSF_LOCAL) != 0) 1776 { 1777 *error_message = (char *) 1778 _("literal relocation occurs for an external symbol"); 1779 return bfd_reloc_outofrange; 1780 } 1781 1782 /* FIXME: The entries in the .lit8 and .lit4 sections should be merged. */ 1783 if (output_bfd != NULL) 1784 relocatable = TRUE; 1785 else 1786 { 1787 relocatable = FALSE; 1788 output_bfd = symbol->section->output_section->owner; 1789 } 1790 1791 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message, 1792 &gp); 1793 if (ret != bfd_reloc_ok) 1794 return ret; 1795 1796 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, 1797 input_section, relocatable, 1798 data, gp); 1799} 1800 1801/* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must 1802 become the offset from the gp register. */ 1803 1804static bfd_reloc_status_type 1805mips_elf_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 1806 void *data, asection *input_section, bfd *output_bfd, 1807 char **error_message) 1808{ 1809 bfd_boolean relocatable; 1810 bfd_reloc_status_type ret; 1811 bfd_vma gp; 1812 1813 /* R_MIPS_GPREL32 relocations are defined for local symbols only. */ 1814 if (output_bfd != NULL 1815 && (symbol->flags & BSF_SECTION_SYM) == 0 1816 && (symbol->flags & BSF_LOCAL) != 0) 1817 { 1818 *error_message = (char *) 1819 _("32bits gp relative relocation occurs for an external symbol"); 1820 return bfd_reloc_outofrange; 1821 } 1822 1823 if (output_bfd != NULL) 1824 { 1825 relocatable = TRUE; 1826 gp = _bfd_get_gp_value (output_bfd); 1827 } 1828 else 1829 { 1830 relocatable = FALSE; 1831 output_bfd = symbol->section->output_section->owner; 1832 1833 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, 1834 error_message, &gp); 1835 if (ret != bfd_reloc_ok) 1836 return ret; 1837 } 1838 1839 return gprel32_with_gp (abfd, symbol, reloc_entry, input_section, 1840 relocatable, data, gp); 1841} 1842 1843static bfd_reloc_status_type 1844gprel32_with_gp (bfd *abfd, asymbol *symbol, arelent *reloc_entry, 1845 asection *input_section, bfd_boolean relocatable, 1846 void *data, bfd_vma gp) 1847{ 1848 bfd_vma relocation; 1849 unsigned long val; 1850 1851 if (bfd_is_com_section (symbol->section)) 1852 relocation = 0; 1853 else 1854 relocation = symbol->value; 1855 1856 relocation += symbol->section->output_section->vma; 1857 relocation += symbol->section->output_offset; 1858 1859 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) 1860 return bfd_reloc_outofrange; 1861 1862 if (reloc_entry->howto->src_mask == 0) 1863 val = 0; 1864 else 1865 val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 1866 1867 /* Set val to the offset into the section or symbol. */ 1868 val += reloc_entry->addend; 1869 1870 /* Adjust val for the final section location and GP value. If we 1871 are producing relocatable output, we don't want to do this for 1872 an external symbol. */ 1873 if (! relocatable 1874 || (symbol->flags & BSF_SECTION_SYM) != 0) 1875 val += relocation - gp; 1876 1877 bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address); 1878 1879 if (relocatable) 1880 reloc_entry->address += input_section->output_offset; 1881 1882 return bfd_reloc_ok; 1883} 1884 1885/* Do a R_MIPS_SHIFT6 relocation. The MSB of the shift is stored at bit 2, 1886 the rest is at bits 6-10. The bitpos already got right by the howto. */ 1887 1888static bfd_reloc_status_type 1889mips_elf_shift6_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 1890 void *data, asection *input_section, bfd *output_bfd, 1891 char **error_message) 1892{ 1893 if (reloc_entry->howto->partial_inplace) 1894 { 1895 reloc_entry->addend = ((reloc_entry->addend & 0x00007c0) 1896 | (reloc_entry->addend & 0x00000800) >> 9); 1897 } 1898 1899 return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, 1900 input_section, output_bfd, 1901 error_message); 1902} 1903 1904/* Handle a mips16 jump. */ 1905 1906static bfd_reloc_status_type 1907mips16_jump_reloc (bfd *abfd ATTRIBUTE_UNUSED, 1908 arelent *reloc_entry ATTRIBUTE_UNUSED, 1909 asymbol *symbol ATTRIBUTE_UNUSED, 1910 void *data ATTRIBUTE_UNUSED, 1911 asection *input_section, bfd *output_bfd ATTRIBUTE_UNUSED, 1912 char **error_message ATTRIBUTE_UNUSED) 1913{ 1914 static bfd_boolean warned = FALSE; 1915 1916 /* FIXME. */ 1917 if (! warned) 1918 (*_bfd_error_handler) 1919 (_("Linking mips16 objects into %s format is not supported"), 1920 bfd_get_target (input_section->output_section->owner)); 1921 warned = TRUE; 1922 1923 return bfd_reloc_undefined; 1924} 1925 1926/* Handle a mips16 GP relative reloc. */ 1927 1928static bfd_reloc_status_type 1929mips16_gprel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 1930 void *data, asection *input_section, bfd *output_bfd, 1931 char **error_message) 1932{ 1933 bfd_boolean relocatable; 1934 bfd_reloc_status_type ret; 1935 bfd_byte *location; 1936 bfd_vma gp; 1937 1938 /* If we're relocating, and this is an external symbol, we don't want 1939 to change anything. */ 1940 if (output_bfd != NULL 1941 && (symbol->flags & BSF_SECTION_SYM) == 0 1942 && (symbol->flags & BSF_LOCAL) != 0) 1943 { 1944 reloc_entry->address += input_section->output_offset; 1945 return bfd_reloc_ok; 1946 } 1947 1948 if (output_bfd != NULL) 1949 relocatable = TRUE; 1950 else 1951 { 1952 relocatable = FALSE; 1953 output_bfd = symbol->section->output_section->owner; 1954 } 1955 1956 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message, 1957 &gp); 1958 if (ret != bfd_reloc_ok) 1959 return ret; 1960 1961 location = (bfd_byte *) data + reloc_entry->address; 1962 _bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE, 1963 location); 1964 ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, 1965 input_section, relocatable, 1966 data, gp); 1967 _bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, !relocatable, 1968 location); 1969 1970 return ret; 1971} 1972 1973/* A mapping from BFD reloc types to MIPS ELF reloc types. */ 1974 1975struct elf_reloc_map { 1976 bfd_reloc_code_real_type bfd_val; 1977 enum elf_mips_reloc_type elf_val; 1978}; 1979 1980static const struct elf_reloc_map mips_reloc_map[] = 1981{ 1982 { BFD_RELOC_NONE, R_MIPS_NONE }, 1983 { BFD_RELOC_16, R_MIPS_16 }, 1984 { BFD_RELOC_32, R_MIPS_32 }, 1985 /* There is no BFD reloc for R_MIPS_REL32. */ 1986 { BFD_RELOC_CTOR, R_MIPS_32 }, 1987 { BFD_RELOC_64, R_MIPS_64 }, 1988 { BFD_RELOC_16_PCREL_S2, R_MIPS_PC16 }, 1989 { BFD_RELOC_HI16_S, R_MIPS_HI16 }, 1990 { BFD_RELOC_LO16, R_MIPS_LO16 }, 1991 { BFD_RELOC_GPREL16, R_MIPS_GPREL16 }, 1992 { BFD_RELOC_GPREL32, R_MIPS_GPREL32 }, 1993 { BFD_RELOC_MIPS_JMP, R_MIPS_26 }, 1994 { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL }, 1995 { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 }, 1996 { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 }, 1997 { BFD_RELOC_MIPS_SHIFT5, R_MIPS_SHIFT5 }, 1998 { BFD_RELOC_MIPS_SHIFT6, R_MIPS_SHIFT6 }, 1999 { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP }, 2000 { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE }, 2001 { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST }, 2002 { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 }, 2003 { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 }, 2004 { BFD_RELOC_MIPS_SUB, R_MIPS_SUB }, 2005 { BFD_RELOC_MIPS_INSERT_A, R_MIPS_INSERT_A }, 2006 { BFD_RELOC_MIPS_INSERT_B, R_MIPS_INSERT_B }, 2007 { BFD_RELOC_MIPS_DELETE, R_MIPS_DELETE }, 2008 { BFD_RELOC_MIPS_HIGHEST, R_MIPS_HIGHEST }, 2009 { BFD_RELOC_MIPS_HIGHER, R_MIPS_HIGHER }, 2010 { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 }, 2011 { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 }, 2012 { BFD_RELOC_MIPS_SCN_DISP, R_MIPS_SCN_DISP }, 2013 { BFD_RELOC_MIPS_REL16, R_MIPS_REL16 }, 2014 /* Use of R_MIPS_ADD_IMMEDIATE and R_MIPS_PJUMP is deprecated. */ 2015 { BFD_RELOC_MIPS_RELGOT, R_MIPS_RELGOT }, 2016 { BFD_RELOC_MIPS_JALR, R_MIPS_JALR }, 2017 { BFD_RELOC_MIPS_TLS_DTPMOD32, R_MIPS_TLS_DTPMOD32 }, 2018 { BFD_RELOC_MIPS_TLS_DTPREL32, R_MIPS_TLS_DTPREL32 }, 2019 { BFD_RELOC_MIPS_TLS_DTPMOD64, R_MIPS_TLS_DTPMOD64 }, 2020 { BFD_RELOC_MIPS_TLS_DTPREL64, R_MIPS_TLS_DTPREL64 }, 2021 { BFD_RELOC_MIPS_TLS_GD, R_MIPS_TLS_GD }, 2022 { BFD_RELOC_MIPS_TLS_LDM, R_MIPS_TLS_LDM }, 2023 { BFD_RELOC_MIPS_TLS_DTPREL_HI16, R_MIPS_TLS_DTPREL_HI16 }, 2024 { BFD_RELOC_MIPS_TLS_DTPREL_LO16, R_MIPS_TLS_DTPREL_LO16 }, 2025 { BFD_RELOC_MIPS_TLS_GOTTPREL, R_MIPS_TLS_GOTTPREL }, 2026 { BFD_RELOC_MIPS_TLS_TPREL32, R_MIPS_TLS_TPREL32 }, 2027 { BFD_RELOC_MIPS_TLS_TPREL64, R_MIPS_TLS_TPREL64 }, 2028 { BFD_RELOC_MIPS_TLS_TPREL_HI16, R_MIPS_TLS_TPREL_HI16 }, 2029 { BFD_RELOC_MIPS_TLS_TPREL_LO16, R_MIPS_TLS_TPREL_LO16 } 2030}; 2031 2032static const struct elf_reloc_map mips16_reloc_map[] = 2033{ 2034 { BFD_RELOC_MIPS16_JMP, R_MIPS16_26 - R_MIPS16_min }, 2035 { BFD_RELOC_MIPS16_GPREL, R_MIPS16_GPREL - R_MIPS16_min }, 2036 { BFD_RELOC_MIPS16_HI16_S, R_MIPS16_HI16 - R_MIPS16_min }, 2037 { BFD_RELOC_MIPS16_LO16, R_MIPS16_LO16 - R_MIPS16_min }, 2038}; 2039 2040/* Given a BFD reloc type, return a howto structure. */ 2041 2042static reloc_howto_type * 2043bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, 2044 bfd_reloc_code_real_type code) 2045{ 2046 unsigned int i; 2047 /* FIXME: We default to RELA here instead of choosing the right 2048 relocation variant. */ 2049 reloc_howto_type *howto_table = elf_mips_howto_table_rela; 2050 reloc_howto_type *howto16_table = elf_mips16_howto_table_rela; 2051 2052 for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); 2053 i++) 2054 { 2055 if (mips_reloc_map[i].bfd_val == code) 2056 return &howto_table[(int) mips_reloc_map[i].elf_val]; 2057 } 2058 2059 for (i = 0; i < sizeof (mips16_reloc_map) / sizeof (struct elf_reloc_map); 2060 i++) 2061 { 2062 if (mips16_reloc_map[i].bfd_val == code) 2063 return &howto16_table[(int) mips16_reloc_map[i].elf_val]; 2064 } 2065 2066 switch (code) 2067 { 2068 case BFD_RELOC_VTABLE_INHERIT: 2069 return &elf_mips_gnu_vtinherit_howto; 2070 case BFD_RELOC_VTABLE_ENTRY: 2071 return &elf_mips_gnu_vtentry_howto; 2072 default: 2073 bfd_set_error (bfd_error_bad_value); 2074 return NULL; 2075 } 2076} 2077 2078/* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */ 2079 2080static reloc_howto_type * 2081mips_elf_n32_rtype_to_howto (unsigned int r_type, bfd_boolean rela_p) 2082{ 2083 switch (r_type) 2084 { 2085 case R_MIPS_GNU_VTINHERIT: 2086 return &elf_mips_gnu_vtinherit_howto; 2087 case R_MIPS_GNU_VTENTRY: 2088 return &elf_mips_gnu_vtentry_howto; 2089 case R_MIPS_GNU_REL16_S2: 2090 if (rela_p) 2091 return &elf_mips_gnu_rela16_s2; 2092 else 2093 return &elf_mips_gnu_rel16_s2; 2094 default: 2095 if (r_type >= R_MIPS16_min && r_type < R_MIPS16_max) 2096 { 2097 if (rela_p) 2098 return &elf_mips16_howto_table_rela[r_type - R_MIPS16_min]; 2099 else 2100 return &elf_mips16_howto_table_rel[r_type - R_MIPS16_min]; 2101 } 2102 BFD_ASSERT (r_type < (unsigned int) R_MIPS_max); 2103 if (rela_p) 2104 return &elf_mips_howto_table_rela[r_type]; 2105 else 2106 return &elf_mips_howto_table_rel[r_type]; 2107 break; 2108 } 2109} 2110 2111/* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */ 2112 2113static void 2114mips_info_to_howto_rel (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst) 2115{ 2116 unsigned int r_type; 2117 2118 r_type = ELF32_R_TYPE (dst->r_info); 2119 cache_ptr->howto = mips_elf_n32_rtype_to_howto (r_type, FALSE); 2120 2121 /* The addend for a GPREL16 or LITERAL relocation comes from the GP 2122 value for the object file. We get the addend now, rather than 2123 when we do the relocation, because the symbol manipulations done 2124 by the linker may cause us to lose track of the input BFD. */ 2125 if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0 2126 && (r_type == (unsigned int) R_MIPS_GPREL16 2127 || r_type == (unsigned int) R_MIPS_LITERAL)) 2128 cache_ptr->addend = elf_gp (abfd); 2129} 2130 2131/* Given a MIPS Elf_Internal_Rela, fill in an arelent structure. */ 2132 2133static void 2134mips_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, 2135 arelent *cache_ptr, Elf_Internal_Rela *dst) 2136{ 2137 unsigned int r_type; 2138 2139 r_type = ELF32_R_TYPE (dst->r_info); 2140 cache_ptr->howto = mips_elf_n32_rtype_to_howto (r_type, TRUE); 2141 cache_ptr->addend = dst->r_addend; 2142} 2143 2144/* Determine whether a symbol is global for the purposes of splitting 2145 the symbol table into global symbols and local symbols. At least 2146 on Irix 5, this split must be between section symbols and all other 2147 symbols. On most ELF targets the split is between static symbols 2148 and externally visible symbols. */ 2149 2150static bfd_boolean 2151mips_elf_sym_is_global (bfd *abfd ATTRIBUTE_UNUSED, asymbol *sym) 2152{ 2153 if (SGI_COMPAT (abfd)) 2154 return (sym->flags & BSF_SECTION_SYM) == 0; 2155 else 2156 return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 2157 || bfd_is_und_section (bfd_get_section (sym)) 2158 || bfd_is_com_section (bfd_get_section (sym))); 2159} 2160 2161/* Set the right machine number for a MIPS ELF file. */ 2162 2163static bfd_boolean 2164mips_elf_n32_object_p (bfd *abfd) 2165{ 2166 unsigned long mach; 2167 2168 /* Irix 5 and 6 are broken. Object file symbol tables are not always 2169 sorted correctly such that local symbols precede global symbols, 2170 and the sh_info field in the symbol table is not always right. */ 2171 if (SGI_COMPAT (abfd)) 2172 elf_bad_symtab (abfd) = TRUE; 2173 2174 mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags); 2175 bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach); 2176 2177 if (! ABI_N32_P(abfd)) 2178 return FALSE; 2179 2180 return TRUE; 2181} 2182 2183/* Support for core dump NOTE sections. */ 2184static bfd_boolean 2185elf32_mips_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 2186{ 2187 int offset; 2188 unsigned int size; 2189 2190 switch (note->descsz) 2191 { 2192 default: 2193 return FALSE; 2194 2195 case 440: /* Linux/MIPS N32 */ 2196 /* pr_cursig */ 2197 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); 2198 2199 /* pr_pid */ 2200 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); 2201 2202 /* pr_reg */ 2203 offset = 72; 2204 size = 360; 2205 2206 break; 2207 } 2208 2209 /* Make a ".reg/999" section. */ 2210 return _bfd_elfcore_make_pseudosection (abfd, ".reg", size, 2211 note->descpos + offset); 2212} 2213 2214static bfd_boolean 2215elf32_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 2216{ 2217 switch (note->descsz) 2218 { 2219 default: 2220 return FALSE; 2221 2222 case 128: /* Linux/MIPS elf_prpsinfo */ 2223 elf_tdata (abfd)->core_program 2224 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); 2225 elf_tdata (abfd)->core_command 2226 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); 2227 } 2228 2229 /* Note that for some reason, a spurious space is tacked 2230 onto the end of the args in some (at least one anyway) 2231 implementations, so strip it off if it exists. */ 2232 2233 { 2234 char *command = elf_tdata (abfd)->core_command; 2235 int n = strlen (command); 2236 2237 if (0 < n && command[n - 1] == ' ') 2238 command[n - 1] = '\0'; 2239 } 2240 2241 return TRUE; 2242} 2243 2244/* Depending on the target vector we generate some version of Irix 2245 executables or "normal" MIPS ELF ABI executables. */ 2246static irix_compat_t 2247elf_n32_mips_irix_compat (bfd *abfd) 2248{ 2249 if ((abfd->xvec == &bfd_elf32_nbigmips_vec) 2250 || (abfd->xvec == &bfd_elf32_nlittlemips_vec)) 2251 return ict_irix6; 2252 else 2253 return ict_none; 2254} 2255 2256/* ECOFF swapping routines. These are used when dealing with the 2257 .mdebug section, which is in the ECOFF debugging format. */ 2258static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = { 2259 /* Symbol table magic number. */ 2260 magicSym, 2261 /* Alignment of debugging information. E.g., 4. */ 2262 4, 2263 /* Sizes of external symbolic information. */ 2264 sizeof (struct hdr_ext), 2265 sizeof (struct dnr_ext), 2266 sizeof (struct pdr_ext), 2267 sizeof (struct sym_ext), 2268 sizeof (struct opt_ext), 2269 sizeof (struct fdr_ext), 2270 sizeof (struct rfd_ext), 2271 sizeof (struct ext_ext), 2272 /* Functions to swap in external symbolic data. */ 2273 ecoff_swap_hdr_in, 2274 ecoff_swap_dnr_in, 2275 ecoff_swap_pdr_in, 2276 ecoff_swap_sym_in, 2277 ecoff_swap_opt_in, 2278 ecoff_swap_fdr_in, 2279 ecoff_swap_rfd_in, 2280 ecoff_swap_ext_in, 2281 _bfd_ecoff_swap_tir_in, 2282 _bfd_ecoff_swap_rndx_in, 2283 /* Functions to swap out external symbolic data. */ 2284 ecoff_swap_hdr_out, 2285 ecoff_swap_dnr_out, 2286 ecoff_swap_pdr_out, 2287 ecoff_swap_sym_out, 2288 ecoff_swap_opt_out, 2289 ecoff_swap_fdr_out, 2290 ecoff_swap_rfd_out, 2291 ecoff_swap_ext_out, 2292 _bfd_ecoff_swap_tir_out, 2293 _bfd_ecoff_swap_rndx_out, 2294 /* Function to read in symbolic data. */ 2295 _bfd_mips_elf_read_ecoff_info 2296}; 2297 2298#define ELF_ARCH bfd_arch_mips 2299#define ELF_MACHINE_CODE EM_MIPS 2300 2301#define elf_backend_collect TRUE 2302#define elf_backend_type_change_ok TRUE 2303#define elf_backend_can_gc_sections TRUE 2304#define elf_info_to_howto mips_info_to_howto_rela 2305#define elf_info_to_howto_rel mips_info_to_howto_rel 2306#define elf_backend_sym_is_global mips_elf_sym_is_global 2307#define elf_backend_object_p mips_elf_n32_object_p 2308#define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing 2309#define elf_backend_section_processing _bfd_mips_elf_section_processing 2310#define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr 2311#define elf_backend_fake_sections _bfd_mips_elf_fake_sections 2312#define elf_backend_section_from_bfd_section \ 2313 _bfd_mips_elf_section_from_bfd_section 2314#define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook 2315#define elf_backend_link_output_symbol_hook \ 2316 _bfd_mips_elf_link_output_symbol_hook 2317#define elf_backend_create_dynamic_sections \ 2318 _bfd_mips_elf_create_dynamic_sections 2319#define elf_backend_check_relocs _bfd_mips_elf_check_relocs 2320#define elf_backend_adjust_dynamic_symbol \ 2321 _bfd_mips_elf_adjust_dynamic_symbol 2322#define elf_backend_always_size_sections \ 2323 _bfd_mips_elf_always_size_sections 2324#define elf_backend_size_dynamic_sections \ 2325 _bfd_mips_elf_size_dynamic_sections 2326#define elf_backend_relocate_section _bfd_mips_elf_relocate_section 2327#define elf_backend_finish_dynamic_symbol \ 2328 _bfd_mips_elf_finish_dynamic_symbol 2329#define elf_backend_finish_dynamic_sections \ 2330 _bfd_mips_elf_finish_dynamic_sections 2331#define elf_backend_final_write_processing \ 2332 _bfd_mips_elf_final_write_processing 2333#define elf_backend_additional_program_headers \ 2334 _bfd_mips_elf_additional_program_headers 2335#define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map 2336#define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook 2337#define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook 2338#define elf_backend_copy_indirect_symbol \ 2339 _bfd_mips_elf_copy_indirect_symbol 2340#define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol 2341#define elf_backend_grok_prstatus elf32_mips_grok_prstatus 2342#define elf_backend_grok_psinfo elf32_mips_grok_psinfo 2343#define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap 2344 2345#define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO) 2346 2347/* MIPS n32 ELF can use a mixture of REL and RELA, but some Relocations 2348 work better/work only in RELA, so we default to this. */ 2349#define elf_backend_may_use_rel_p 1 2350#define elf_backend_may_use_rela_p 1 2351#define elf_backend_default_use_rela_p 1 2352#define elf_backend_sign_extend_vma TRUE 2353 2354#define elf_backend_discard_info _bfd_mips_elf_discard_info 2355#define elf_backend_ignore_discarded_relocs \ 2356 _bfd_mips_elf_ignore_discarded_relocs 2357#define elf_backend_write_section _bfd_mips_elf_write_section 2358#define elf_backend_mips_irix_compat elf_n32_mips_irix_compat 2359#define elf_backend_mips_rtype_to_howto mips_elf_n32_rtype_to_howto 2360#define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line 2361#define bfd_elf32_find_inliner_info _bfd_mips_elf_find_inliner_info 2362#define bfd_elf32_new_section_hook _bfd_mips_elf_new_section_hook 2363#define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents 2364#define bfd_elf32_bfd_get_relocated_section_contents \ 2365 _bfd_elf_mips_get_relocated_section_contents 2366#define bfd_elf32_bfd_link_hash_table_create \ 2367 _bfd_mips_elf_link_hash_table_create 2368#define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link 2369#define bfd_elf32_bfd_merge_private_bfd_data \ 2370 _bfd_mips_elf_merge_private_bfd_data 2371#define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags 2372#define bfd_elf32_bfd_print_private_bfd_data \ 2373 _bfd_mips_elf_print_private_bfd_data 2374#define bfd_elf32_bfd_relax_section _bfd_mips_relax_section 2375 2376/* Support for SGI-ish mips targets using n32 ABI. */ 2377 2378#define TARGET_LITTLE_SYM bfd_elf32_nlittlemips_vec 2379#define TARGET_LITTLE_NAME "elf32-nlittlemips" 2380#define TARGET_BIG_SYM bfd_elf32_nbigmips_vec 2381#define TARGET_BIG_NAME "elf32-nbigmips" 2382 2383/* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses 2384 a value of 0x1000, and we are compatible. 2385 FIXME: How does this affect NewABI? */ 2386#define ELF_MAXPAGESIZE 0x1000 2387 2388#include "elf32-target.h" 2389 2390/* Support for traditional mips targets using n32 ABI. */ 2391#undef TARGET_LITTLE_SYM 2392#undef TARGET_LITTLE_NAME 2393#undef TARGET_BIG_SYM 2394#undef TARGET_BIG_NAME 2395 2396#undef ELF_MAXPAGESIZE 2397 2398#define TARGET_LITTLE_SYM bfd_elf32_ntradlittlemips_vec 2399#define TARGET_LITTLE_NAME "elf32-ntradlittlemips" 2400#define TARGET_BIG_SYM bfd_elf32_ntradbigmips_vec 2401#define TARGET_BIG_NAME "elf32-ntradbigmips" 2402 2403/* The SVR4 MIPS ABI says that this should be 0x10000, and Linux uses 2404 page sizes of up to that limit, so we need to respect it. */ 2405#define ELF_MAXPAGESIZE 0x10000 2406#define elf32_bed elf32_tradbed 2407 2408/* Include the target file again for this target. */ 2409#include "elf32-target.h" 2410