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 43 /* Get the ECOFF swapping routines. */ 44 #include "coff/sym.h" 45 #include "coff/symconst.h" 46 #include "coff/internal.h" 47 #include "coff/ecoff.h" 48 #include "coff/mips.h" 49 #define ECOFF_SIGNED_32 50 #include "ecoffswap.h" 51 52 static bfd_boolean mips_elf_assign_gp 53 (bfd *, bfd_vma *); 54 static bfd_reloc_status_type mips_elf_final_gp 55 (bfd *, asymbol *, bfd_boolean, char **, bfd_vma *); 56 static bfd_reloc_status_type mips_elf_gprel16_reloc 57 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 58 static bfd_reloc_status_type mips_elf_literal_reloc 59 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 60 static bfd_reloc_status_type mips_elf_gprel32_reloc 61 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 62 static bfd_reloc_status_type gprel32_with_gp 63 (bfd *, asymbol *, arelent *, asection *, bfd_boolean, void *, bfd_vma); 64 static bfd_reloc_status_type mips_elf_shift6_reloc 65 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 66 static bfd_reloc_status_type mips16_gprel_reloc 67 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 68 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup 69 (bfd *, bfd_reloc_code_real_type); 70 static reloc_howto_type *mips_elf_n32_rtype_to_howto 71 (unsigned int, bfd_boolean); 72 static void mips_info_to_howto_rel 73 (bfd *, arelent *, Elf_Internal_Rela *); 74 static void mips_info_to_howto_rela 75 (bfd *, arelent *, Elf_Internal_Rela *); 76 static bfd_boolean mips_elf_sym_is_global 77 (bfd *, asymbol *); 78 static bfd_boolean mips_elf_n32_object_p 79 (bfd *); 80 static bfd_boolean elf32_mips_grok_prstatus 81 (bfd *, Elf_Internal_Note *); 82 static bfd_boolean elf32_mips_grok_psinfo 83 (bfd *, Elf_Internal_Note *); 84 static irix_compat_t elf_n32_mips_irix_compat 85 (bfd *); 86 87 extern const bfd_target bfd_elf32_nbigmips_vec; 88 extern 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. */ 106 107 static 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 /* 32 bit relocation with no addend. */ 761 HOWTO (R_MIPS_GLOB_DAT, /* type */ 762 0, /* rightshift */ 763 2, /* size (0 = byte, 1 = short, 2 = long) */ 764 32, /* bitsize */ 765 FALSE, /* pc_relative */ 766 0, /* bitpos */ 767 complain_overflow_dont, /* complain_on_overflow */ 768 _bfd_mips_elf_generic_reloc, /* special_function */ 769 "R_MIPS_GLOB_DAT", /* name */ 770 FALSE, /* partial_inplace */ 771 0x0, /* src_mask */ 772 0xffffffff, /* dst_mask */ 773 FALSE), /* pcrel_offset */ 774 }; 775 776 /* The relocation table used for SHT_RELA sections. */ 777 778 static reloc_howto_type elf_mips_howto_table_rela[] = 779 { 780 /* No relocation. */ 781 HOWTO (R_MIPS_NONE, /* type */ 782 0, /* rightshift */ 783 0, /* size (0 = byte, 1 = short, 2 = long) */ 784 0, /* bitsize */ 785 FALSE, /* pc_relative */ 786 0, /* bitpos */ 787 complain_overflow_dont, /* complain_on_overflow */ 788 _bfd_mips_elf_generic_reloc, /* special_function */ 789 "R_MIPS_NONE", /* name */ 790 FALSE, /* partial_inplace */ 791 0, /* src_mask */ 792 0, /* dst_mask */ 793 FALSE), /* pcrel_offset */ 794 795 /* 16 bit relocation. */ 796 HOWTO (R_MIPS_16, /* type */ 797 0, /* rightshift */ 798 2, /* size (0 = byte, 1 = short, 2 = long) */ 799 16, /* bitsize */ 800 FALSE, /* pc_relative */ 801 0, /* bitpos */ 802 complain_overflow_signed, /* complain_on_overflow */ 803 _bfd_mips_elf_generic_reloc, /* special_function */ 804 "R_MIPS_16", /* name */ 805 FALSE, /* partial_inplace */ 806 0, /* src_mask */ 807 0x0000, /* dst_mask */ 808 FALSE), /* pcrel_offset */ 809 810 /* 32 bit relocation. */ 811 HOWTO (R_MIPS_32, /* 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_32", /* name */ 820 FALSE, /* partial_inplace */ 821 0, /* src_mask */ 822 0xffffffff, /* dst_mask */ 823 FALSE), /* pcrel_offset */ 824 825 /* 32 bit symbol relative relocation. */ 826 HOWTO (R_MIPS_REL32, /* type */ 827 0, /* rightshift */ 828 2, /* size (0 = byte, 1 = short, 2 = long) */ 829 32, /* bitsize */ 830 FALSE, /* pc_relative */ 831 0, /* bitpos */ 832 complain_overflow_dont, /* complain_on_overflow */ 833 _bfd_mips_elf_generic_reloc, /* special_function */ 834 "R_MIPS_REL32", /* name */ 835 FALSE, /* partial_inplace */ 836 0, /* src_mask */ 837 0xffffffff, /* dst_mask */ 838 FALSE), /* pcrel_offset */ 839 840 /* 26 bit jump address. */ 841 HOWTO (R_MIPS_26, /* type */ 842 2, /* rightshift */ 843 2, /* size (0 = byte, 1 = short, 2 = long) */ 844 26, /* bitsize */ 845 FALSE, /* pc_relative */ 846 0, /* bitpos */ 847 complain_overflow_dont, /* complain_on_overflow */ 848 /* This needs complex overflow 849 detection, because the upper 36 850 bits must match the PC + 4. */ 851 _bfd_mips_elf_generic_reloc, /* special_function */ 852 "R_MIPS_26", /* name */ 853 FALSE, /* partial_inplace */ 854 0, /* src_mask */ 855 0x03ffffff, /* dst_mask */ 856 FALSE), /* pcrel_offset */ 857 858 /* High 16 bits of symbol value. */ 859 HOWTO (R_MIPS_HI16, /* 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_HI16", /* name */ 868 FALSE, /* partial_inplace */ 869 0, /* src_mask */ 870 0x0000ffff, /* dst_mask */ 871 FALSE), /* pcrel_offset */ 872 873 /* Low 16 bits of symbol value. */ 874 HOWTO (R_MIPS_LO16, /* 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_dont, /* complain_on_overflow */ 881 _bfd_mips_elf_generic_reloc, /* special_function */ 882 "R_MIPS_LO16", /* name */ 883 FALSE, /* partial_inplace */ 884 0, /* src_mask */ 885 0x0000ffff, /* dst_mask */ 886 FALSE), /* pcrel_offset */ 887 888 /* GP relative reference. */ 889 HOWTO (R_MIPS_GPREL16, /* 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_gprel16_reloc, /* special_function */ 897 "R_MIPS_GPREL16", /* name */ 898 FALSE, /* partial_inplace */ 899 0, /* src_mask */ 900 0x0000ffff, /* dst_mask */ 901 FALSE), /* pcrel_offset */ 902 903 /* Reference to literal section. */ 904 HOWTO (R_MIPS_LITERAL, /* 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 mips_elf_literal_reloc, /* special_function */ 912 "R_MIPS_LITERAL", /* name */ 913 FALSE, /* partial_inplace */ 914 0, /* src_mask */ 915 0x0000ffff, /* dst_mask */ 916 FALSE), /* pcrel_offset */ 917 918 /* Reference to global offset table. */ 919 HOWTO (R_MIPS_GOT16, /* type */ 920 0, /* rightshift */ 921 2, /* size (0 = byte, 1 = short, 2 = long) */ 922 16, /* bitsize */ 923 FALSE, /* pc_relative */ 924 0, /* bitpos */ 925 complain_overflow_signed, /* complain_on_overflow */ 926 _bfd_mips_elf_generic_reloc, /* special_function */ 927 "R_MIPS_GOT16", /* name */ 928 FALSE, /* partial_inplace */ 929 0, /* src_mask */ 930 0x0000ffff, /* dst_mask */ 931 FALSE), /* pcrel_offset */ 932 933 /* 16 bit PC relative reference. Note that the ABI document has a typo 934 and claims R_MIPS_PC16 to be not rightshifted, rendering it useless. 935 We do the right thing here. */ 936 HOWTO (R_MIPS_PC16, /* type */ 937 2, /* rightshift */ 938 2, /* size (0 = byte, 1 = short, 2 = long) */ 939 16, /* bitsize */ 940 TRUE, /* pc_relative */ 941 0, /* bitpos */ 942 complain_overflow_signed, /* complain_on_overflow */ 943 _bfd_mips_elf_generic_reloc, /* special_function */ 944 "R_MIPS_PC16", /* name */ 945 FALSE, /* partial_inplace */ 946 0, /* src_mask */ 947 0x0000ffff, /* dst_mask */ 948 TRUE), /* pcrel_offset */ 949 950 /* 16 bit call through global offset table. */ 951 HOWTO (R_MIPS_CALL16, /* type */ 952 0, /* rightshift */ 953 2, /* size (0 = byte, 1 = short, 2 = long) */ 954 16, /* bitsize */ 955 FALSE, /* pc_relative */ 956 0, /* bitpos */ 957 complain_overflow_signed, /* complain_on_overflow */ 958 _bfd_mips_elf_generic_reloc, /* special_function */ 959 "R_MIPS_CALL16", /* name */ 960 FALSE, /* partial_inplace */ 961 0, /* src_mask */ 962 0x0000ffff, /* dst_mask */ 963 FALSE), /* pcrel_offset */ 964 965 /* 32 bit GP relative reference. */ 966 HOWTO (R_MIPS_GPREL32, /* type */ 967 0, /* rightshift */ 968 2, /* size (0 = byte, 1 = short, 2 = long) */ 969 32, /* bitsize */ 970 FALSE, /* pc_relative */ 971 0, /* bitpos */ 972 complain_overflow_dont, /* complain_on_overflow */ 973 mips_elf_gprel32_reloc, /* special_function */ 974 "R_MIPS_GPREL32", /* name */ 975 FALSE, /* partial_inplace */ 976 0, /* src_mask */ 977 0xffffffff, /* dst_mask */ 978 FALSE), /* pcrel_offset */ 979 980 EMPTY_HOWTO (13), 981 EMPTY_HOWTO (14), 982 EMPTY_HOWTO (15), 983 984 /* A 5 bit shift field. */ 985 HOWTO (R_MIPS_SHIFT5, /* type */ 986 0, /* rightshift */ 987 2, /* size (0 = byte, 1 = short, 2 = long) */ 988 5, /* bitsize */ 989 FALSE, /* pc_relative */ 990 6, /* bitpos */ 991 complain_overflow_bitfield, /* complain_on_overflow */ 992 _bfd_mips_elf_generic_reloc, /* special_function */ 993 "R_MIPS_SHIFT5", /* name */ 994 FALSE, /* partial_inplace */ 995 0, /* src_mask */ 996 0x000007c0, /* dst_mask */ 997 FALSE), /* pcrel_offset */ 998 999 /* A 6 bit shift field. */ 1000 HOWTO (R_MIPS_SHIFT6, /* type */ 1001 0, /* rightshift */ 1002 2, /* size (0 = byte, 1 = short, 2 = long) */ 1003 6, /* bitsize */ 1004 FALSE, /* pc_relative */ 1005 6, /* bitpos */ 1006 complain_overflow_bitfield, /* complain_on_overflow */ 1007 mips_elf_shift6_reloc, /* special_function */ 1008 "R_MIPS_SHIFT6", /* name */ 1009 FALSE, /* partial_inplace */ 1010 0, /* src_mask */ 1011 0x000007c4, /* dst_mask */ 1012 FALSE), /* pcrel_offset */ 1013 1014 /* 64 bit relocation. */ 1015 HOWTO (R_MIPS_64, /* type */ 1016 0, /* rightshift */ 1017 4, /* size (0 = byte, 1 = short, 2 = long) */ 1018 64, /* bitsize */ 1019 FALSE, /* pc_relative */ 1020 0, /* bitpos */ 1021 complain_overflow_dont, /* complain_on_overflow */ 1022 _bfd_mips_elf_generic_reloc, /* special_function */ 1023 "R_MIPS_64", /* name */ 1024 FALSE, /* partial_inplace */ 1025 0, /* src_mask */ 1026 MINUS_ONE, /* dst_mask */ 1027 FALSE), /* pcrel_offset */ 1028 1029 /* Displacement in the global offset table. */ 1030 HOWTO (R_MIPS_GOT_DISP, /* 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_DISP", /* name */ 1039 FALSE, /* partial_inplace */ 1040 0, /* src_mask */ 1041 0x0000ffff, /* dst_mask */ 1042 FALSE), /* pcrel_offset */ 1043 1044 /* Displacement to page pointer in the global offset table. */ 1045 HOWTO (R_MIPS_GOT_PAGE, /* 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_PAGE", /* name */ 1054 FALSE, /* partial_inplace */ 1055 0, /* src_mask */ 1056 0x0000ffff, /* dst_mask */ 1057 FALSE), /* pcrel_offset */ 1058 1059 /* Offset from page pointer in the global offset table. */ 1060 HOWTO (R_MIPS_GOT_OFST, /* 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_signed, /* complain_on_overflow */ 1067 _bfd_mips_elf_generic_reloc, /* special_function */ 1068 "R_MIPS_GOT_OFST", /* name */ 1069 FALSE, /* partial_inplace */ 1070 0, /* src_mask */ 1071 0x0000ffff, /* dst_mask */ 1072 FALSE), /* pcrel_offset */ 1073 1074 /* High 16 bits of displacement in global offset table. */ 1075 HOWTO (R_MIPS_GOT_HI16, /* 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_HI16", /* name */ 1084 FALSE, /* partial_inplace */ 1085 0, /* src_mask */ 1086 0x0000ffff, /* dst_mask */ 1087 FALSE), /* pcrel_offset */ 1088 1089 /* Low 16 bits of displacement in global offset table. */ 1090 HOWTO (R_MIPS_GOT_LO16, /* type */ 1091 0, /* rightshift */ 1092 2, /* size (0 = byte, 1 = short, 2 = long) */ 1093 16, /* 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_GOT_LO16", /* name */ 1099 FALSE, /* partial_inplace */ 1100 0, /* src_mask */ 1101 0x0000ffff, /* dst_mask */ 1102 FALSE), /* pcrel_offset */ 1103 1104 /* 64 bit subtraction. */ 1105 HOWTO (R_MIPS_SUB, /* type */ 1106 0, /* rightshift */ 1107 4, /* size (0 = byte, 1 = short, 2 = long) */ 1108 64, /* bitsize */ 1109 FALSE, /* pc_relative */ 1110 0, /* bitpos */ 1111 complain_overflow_dont, /* complain_on_overflow */ 1112 _bfd_mips_elf_generic_reloc, /* special_function */ 1113 "R_MIPS_SUB", /* name */ 1114 FALSE, /* partial_inplace */ 1115 0, /* src_mask */ 1116 MINUS_ONE, /* dst_mask */ 1117 FALSE), /* pcrel_offset */ 1118 1119 /* Insert the addend as an instruction. */ 1120 /* FIXME: Not handled correctly. */ 1121 HOWTO (R_MIPS_INSERT_A, /* type */ 1122 0, /* rightshift */ 1123 2, /* size (0 = byte, 1 = short, 2 = long) */ 1124 32, /* bitsize */ 1125 FALSE, /* pc_relative */ 1126 0, /* bitpos */ 1127 complain_overflow_dont, /* complain_on_overflow */ 1128 _bfd_mips_elf_generic_reloc, /* special_function */ 1129 "R_MIPS_INSERT_A", /* name */ 1130 FALSE, /* partial_inplace */ 1131 0, /* src_mask */ 1132 0xffffffff, /* dst_mask */ 1133 FALSE), /* pcrel_offset */ 1134 1135 /* Insert the addend as an instruction, and change all relocations 1136 to refer to the old instruction at the address. */ 1137 /* FIXME: Not handled correctly. */ 1138 HOWTO (R_MIPS_INSERT_B, /* type */ 1139 0, /* rightshift */ 1140 2, /* size (0 = byte, 1 = short, 2 = long) */ 1141 32, /* bitsize */ 1142 FALSE, /* pc_relative */ 1143 0, /* bitpos */ 1144 complain_overflow_dont, /* complain_on_overflow */ 1145 _bfd_mips_elf_generic_reloc, /* special_function */ 1146 "R_MIPS_INSERT_B", /* name */ 1147 FALSE, /* partial_inplace */ 1148 0, /* src_mask */ 1149 0xffffffff, /* dst_mask */ 1150 FALSE), /* pcrel_offset */ 1151 1152 /* Delete a 32 bit instruction. */ 1153 /* FIXME: Not handled correctly. */ 1154 HOWTO (R_MIPS_DELETE, /* type */ 1155 0, /* rightshift */ 1156 2, /* size (0 = byte, 1 = short, 2 = long) */ 1157 32, /* 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_DELETE", /* name */ 1163 FALSE, /* partial_inplace */ 1164 0, /* src_mask */ 1165 0xffffffff, /* dst_mask */ 1166 FALSE), /* pcrel_offset */ 1167 1168 /* Get the higher value of a 64 bit addend. */ 1169 HOWTO (R_MIPS_HIGHER, /* 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_HIGHER", /* name */ 1178 FALSE, /* partial_inplace */ 1179 0, /* src_mask */ 1180 0x0000ffff, /* dst_mask */ 1181 FALSE), /* pcrel_offset */ 1182 1183 /* Get the highest value of a 64 bit addend. */ 1184 HOWTO (R_MIPS_HIGHEST, /* 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_HIGHEST", /* name */ 1193 FALSE, /* partial_inplace */ 1194 0, /* src_mask */ 1195 0x0000ffff, /* dst_mask */ 1196 FALSE), /* pcrel_offset */ 1197 1198 /* High 16 bits of displacement in global offset table. */ 1199 HOWTO (R_MIPS_CALL_HI16, /* 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_HI16", /* name */ 1208 FALSE, /* partial_inplace */ 1209 0, /* src_mask */ 1210 0x0000ffff, /* dst_mask */ 1211 FALSE), /* pcrel_offset */ 1212 1213 /* Low 16 bits of displacement in global offset table. */ 1214 HOWTO (R_MIPS_CALL_LO16, /* type */ 1215 0, /* rightshift */ 1216 2, /* size (0 = byte, 1 = short, 2 = long) */ 1217 16, /* 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_CALL_LO16", /* name */ 1223 FALSE, /* partial_inplace */ 1224 0, /* src_mask */ 1225 0x0000ffff, /* dst_mask */ 1226 FALSE), /* pcrel_offset */ 1227 1228 /* Section displacement, used by an associated event location section. */ 1229 HOWTO (R_MIPS_SCN_DISP, /* type */ 1230 0, /* rightshift */ 1231 2, /* size (0 = byte, 1 = short, 2 = long) */ 1232 32, /* bitsize */ 1233 FALSE, /* pc_relative */ 1234 0, /* bitpos */ 1235 complain_overflow_dont, /* complain_on_overflow */ 1236 _bfd_mips_elf_generic_reloc, /* special_function */ 1237 "R_MIPS_SCN_DISP", /* name */ 1238 FALSE, /* partial_inplace */ 1239 0, /* src_mask */ 1240 0xffffffff, /* dst_mask */ 1241 FALSE), /* pcrel_offset */ 1242 1243 /* 16 bit relocation. */ 1244 HOWTO (R_MIPS_REL16, /* type */ 1245 0, /* rightshift */ 1246 1, /* size (0 = byte, 1 = short, 2 = long) */ 1247 16, /* bitsize */ 1248 FALSE, /* pc_relative */ 1249 0, /* bitpos */ 1250 complain_overflow_signed, /* complain_on_overflow */ 1251 _bfd_mips_elf_generic_reloc, /* special_function */ 1252 "R_MIPS_REL16", /* name */ 1253 FALSE, /* partial_inplace */ 1254 0, /* src_mask */ 1255 0xffff, /* dst_mask */ 1256 FALSE), /* pcrel_offset */ 1257 1258 /* These two are obsolete. */ 1259 EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE), 1260 EMPTY_HOWTO (R_MIPS_PJUMP), 1261 1262 /* Similiar to R_MIPS_REL32, but used for relocations in a GOT section. 1263 It must be used for multigot GOT's (and only there). */ 1264 HOWTO (R_MIPS_RELGOT, /* type */ 1265 0, /* rightshift */ 1266 2, /* size (0 = byte, 1 = short, 2 = long) */ 1267 32, /* bitsize */ 1268 FALSE, /* pc_relative */ 1269 0, /* bitpos */ 1270 complain_overflow_dont, /* complain_on_overflow */ 1271 _bfd_mips_elf_generic_reloc, /* special_function */ 1272 "R_MIPS_RELGOT", /* name */ 1273 FALSE, /* partial_inplace */ 1274 0, /* src_mask */ 1275 0xffffffff, /* dst_mask */ 1276 FALSE), /* pcrel_offset */ 1277 1278 /* Protected jump conversion. This is an optimization hint. No 1279 relocation is required for correctness. */ 1280 HOWTO (R_MIPS_JALR, /* 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_JALR", /* name */ 1289 FALSE, /* partial_inplace */ 1290 0, /* src_mask */ 1291 0, /* dst_mask */ 1292 FALSE), /* pcrel_offset */ 1293 1294 /* TLS GD/LD dynamic relocations. */ 1295 HOWTO (R_MIPS_TLS_DTPMOD32, /* type */ 1296 0, /* rightshift */ 1297 2, /* size (0 = byte, 1 = short, 2 = long) */ 1298 32, /* bitsize */ 1299 FALSE, /* pc_relative */ 1300 0, /* bitpos */ 1301 complain_overflow_dont, /* complain_on_overflow */ 1302 _bfd_mips_elf_generic_reloc, /* special_function */ 1303 "R_MIPS_TLS_DTPMOD32", /* name */ 1304 FALSE, /* partial_inplace */ 1305 0xffffffff, /* src_mask */ 1306 0xffffffff, /* dst_mask */ 1307 FALSE), /* pcrel_offset */ 1308 1309 HOWTO (R_MIPS_TLS_DTPREL32, /* type */ 1310 0, /* rightshift */ 1311 2, /* size (0 = byte, 1 = short, 2 = long) */ 1312 32, /* bitsize */ 1313 FALSE, /* pc_relative */ 1314 0, /* bitpos */ 1315 complain_overflow_dont, /* complain_on_overflow */ 1316 _bfd_mips_elf_generic_reloc, /* special_function */ 1317 "R_MIPS_TLS_DTPREL32", /* name */ 1318 FALSE, /* partial_inplace */ 1319 0xffffffff, /* src_mask */ 1320 0xffffffff, /* dst_mask */ 1321 FALSE), /* pcrel_offset */ 1322 1323 EMPTY_HOWTO (R_MIPS_TLS_DTPMOD64), 1324 EMPTY_HOWTO (R_MIPS_TLS_DTPREL64), 1325 1326 /* TLS general dynamic variable reference. */ 1327 HOWTO (R_MIPS_TLS_GD, /* 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_GD", /* name */ 1336 FALSE, /* partial_inplace */ 1337 0x0000ffff, /* src_mask */ 1338 0x0000ffff, /* dst_mask */ 1339 FALSE), /* pcrel_offset */ 1340 1341 /* TLS local dynamic variable reference. */ 1342 HOWTO (R_MIPS_TLS_LDM, /* 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_LDM", /* name */ 1351 FALSE, /* 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_HI16, /* 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_HI16", /* name */ 1366 FALSE, /* partial_inplace */ 1367 0x0000ffff, /* src_mask */ 1368 0x0000ffff, /* dst_mask */ 1369 FALSE), /* pcrel_offset */ 1370 1371 /* TLS local dynamic offset. */ 1372 HOWTO (R_MIPS_TLS_DTPREL_LO16, /* 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_DTPREL_LO16", /* name */ 1381 FALSE, /* partial_inplace */ 1382 0x0000ffff, /* src_mask */ 1383 0x0000ffff, /* dst_mask */ 1384 FALSE), /* pcrel_offset */ 1385 1386 /* TLS thread pointer offset. */ 1387 HOWTO (R_MIPS_TLS_GOTTPREL, /* type */ 1388 0, /* rightshift */ 1389 2, /* size (0 = byte, 1 = short, 2 = long) */ 1390 16, /* bitsize */ 1391 FALSE, /* pc_relative */ 1392 0, /* bitpos */ 1393 complain_overflow_signed, /* complain_on_overflow */ 1394 _bfd_mips_elf_generic_reloc, /* special_function */ 1395 "R_MIPS_TLS_GOTTPREL", /* name */ 1396 FALSE, /* partial_inplace */ 1397 0x0000ffff, /* src_mask */ 1398 0x0000ffff, /* dst_mask */ 1399 FALSE), /* pcrel_offset */ 1400 1401 /* TLS IE dynamic relocations. */ 1402 HOWTO (R_MIPS_TLS_TPREL32, /* type */ 1403 0, /* rightshift */ 1404 2, /* size (0 = byte, 1 = short, 2 = long) */ 1405 32, /* bitsize */ 1406 FALSE, /* pc_relative */ 1407 0, /* bitpos */ 1408 complain_overflow_dont, /* complain_on_overflow */ 1409 _bfd_mips_elf_generic_reloc, /* special_function */ 1410 "R_MIPS_TLS_TPREL32", /* name */ 1411 FALSE, /* partial_inplace */ 1412 0xffffffff, /* src_mask */ 1413 0xffffffff, /* dst_mask */ 1414 FALSE), /* pcrel_offset */ 1415 1416 EMPTY_HOWTO (R_MIPS_TLS_TPREL64), 1417 1418 /* TLS thread pointer offset. */ 1419 HOWTO (R_MIPS_TLS_TPREL_HI16, /* 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_HI16", /* name */ 1428 FALSE, /* partial_inplace */ 1429 0x0000ffff, /* src_mask */ 1430 0x0000ffff, /* dst_mask */ 1431 FALSE), /* pcrel_offset */ 1432 1433 /* TLS thread pointer offset. */ 1434 HOWTO (R_MIPS_TLS_TPREL_LO16, /* type */ 1435 0, /* rightshift */ 1436 2, /* size (0 = byte, 1 = short, 2 = long) */ 1437 16, /* bitsize */ 1438 FALSE, /* pc_relative */ 1439 0, /* bitpos */ 1440 complain_overflow_signed, /* complain_on_overflow */ 1441 _bfd_mips_elf_generic_reloc, /* special_function */ 1442 "R_MIPS_TLS_TPREL_LO16", /* name */ 1443 FALSE, /* partial_inplace */ 1444 0x0000ffff, /* src_mask */ 1445 0x0000ffff, /* dst_mask */ 1446 FALSE), /* pcrel_offset */ 1447 1448 /* 32 bit relocation with no addend. */ 1449 HOWTO (R_MIPS_GLOB_DAT, /* type */ 1450 0, /* rightshift */ 1451 2, /* size (0 = byte, 1 = short, 2 = long) */ 1452 32, /* bitsize */ 1453 FALSE, /* pc_relative */ 1454 0, /* bitpos */ 1455 complain_overflow_dont, /* complain_on_overflow */ 1456 _bfd_mips_elf_generic_reloc, /* special_function */ 1457 "R_MIPS_GLOB_DAT", /* name */ 1458 FALSE, /* partial_inplace */ 1459 0x0, /* src_mask */ 1460 0xffffffff, /* dst_mask */ 1461 FALSE), /* pcrel_offset */ 1462 }; 1463 1464 static reloc_howto_type elf_mips16_howto_table_rel[] = 1465 { 1466 /* The reloc used for the mips16 jump instruction. */ 1467 HOWTO (R_MIPS16_26, /* type */ 1468 2, /* rightshift */ 1469 2, /* size (0 = byte, 1 = short, 2 = long) */ 1470 26, /* bitsize */ 1471 FALSE, /* pc_relative */ 1472 0, /* bitpos */ 1473 complain_overflow_dont, /* complain_on_overflow */ 1474 /* This needs complex overflow 1475 detection, because the upper four 1476 bits must match the PC. */ 1477 _bfd_mips_elf_generic_reloc, /* special_function */ 1478 "R_MIPS16_26", /* name */ 1479 TRUE, /* partial_inplace */ 1480 0x3ffffff, /* src_mask */ 1481 0x3ffffff, /* dst_mask */ 1482 FALSE), /* pcrel_offset */ 1483 1484 /* The reloc used for the mips16 gprel instruction. */ 1485 HOWTO (R_MIPS16_GPREL, /* type */ 1486 0, /* rightshift */ 1487 2, /* size (0 = byte, 1 = short, 2 = long) */ 1488 16, /* bitsize */ 1489 FALSE, /* pc_relative */ 1490 0, /* bitpos */ 1491 complain_overflow_signed, /* complain_on_overflow */ 1492 mips16_gprel_reloc, /* special_function */ 1493 "R_MIPS16_GPREL", /* name */ 1494 TRUE, /* partial_inplace */ 1495 0x0000ffff, /* src_mask */ 1496 0x0000ffff, /* dst_mask */ 1497 FALSE), /* pcrel_offset */ 1498 1499 /* A MIPS16 reference to the global offset table. */ 1500 HOWTO (R_MIPS16_GOT16, /* type */ 1501 0, /* rightshift */ 1502 2, /* size (0 = byte, 1 = short, 2 = long) */ 1503 16, /* bitsize */ 1504 FALSE, /* pc_relative */ 1505 0, /* bitpos */ 1506 complain_overflow_dont, /* complain_on_overflow */ 1507 _bfd_mips_elf_got16_reloc, /* special_function */ 1508 "R_MIPS16_GOT16", /* name */ 1509 TRUE, /* partial_inplace */ 1510 0x0000ffff, /* src_mask */ 1511 0x0000ffff, /* dst_mask */ 1512 FALSE), /* pcrel_offset */ 1513 1514 /* A MIPS16 call through the global offset table. */ 1515 HOWTO (R_MIPS16_CALL16, /* type */ 1516 0, /* rightshift */ 1517 2, /* size (0 = byte, 1 = short, 2 = long) */ 1518 16, /* bitsize */ 1519 FALSE, /* pc_relative */ 1520 0, /* bitpos */ 1521 complain_overflow_dont, /* complain_on_overflow */ 1522 _bfd_mips_elf_generic_reloc, /* special_function */ 1523 "R_MIPS16_CALL16", /* name */ 1524 TRUE, /* partial_inplace */ 1525 0x0000ffff, /* src_mask */ 1526 0x0000ffff, /* dst_mask */ 1527 FALSE), /* pcrel_offset */ 1528 1529 /* MIPS16 high 16 bits of symbol value. */ 1530 HOWTO (R_MIPS16_HI16, /* type */ 1531 16, /* rightshift */ 1532 2, /* size (0 = byte, 1 = short, 2 = long) */ 1533 16, /* bitsize */ 1534 FALSE, /* pc_relative */ 1535 0, /* bitpos */ 1536 complain_overflow_dont, /* complain_on_overflow */ 1537 _bfd_mips_elf_hi16_reloc, /* special_function */ 1538 "R_MIPS16_HI16", /* name */ 1539 TRUE, /* partial_inplace */ 1540 0x0000ffff, /* src_mask */ 1541 0x0000ffff, /* dst_mask */ 1542 FALSE), /* pcrel_offset */ 1543 1544 /* MIPS16 low 16 bits of symbol value. */ 1545 HOWTO (R_MIPS16_LO16, /* type */ 1546 0, /* rightshift */ 1547 2, /* size (0 = byte, 1 = short, 2 = long) */ 1548 16, /* bitsize */ 1549 FALSE, /* pc_relative */ 1550 0, /* bitpos */ 1551 complain_overflow_dont, /* complain_on_overflow */ 1552 _bfd_mips_elf_lo16_reloc, /* special_function */ 1553 "R_MIPS16_LO16", /* name */ 1554 TRUE, /* partial_inplace */ 1555 0x0000ffff, /* src_mask */ 1556 0x0000ffff, /* dst_mask */ 1557 FALSE), /* pcrel_offset */ 1558 }; 1559 1560 static reloc_howto_type elf_mips16_howto_table_rela[] = 1561 { 1562 /* The reloc used for the mips16 jump instruction. */ 1563 HOWTO (R_MIPS16_26, /* type */ 1564 2, /* rightshift */ 1565 2, /* size (0 = byte, 1 = short, 2 = long) */ 1566 26, /* bitsize */ 1567 FALSE, /* pc_relative */ 1568 0, /* bitpos */ 1569 complain_overflow_dont, /* complain_on_overflow */ 1570 /* This needs complex overflow 1571 detection, because the upper four 1572 bits must match the PC. */ 1573 _bfd_mips_elf_generic_reloc, /* special_function */ 1574 "R_MIPS16_26", /* name */ 1575 FALSE, /* partial_inplace */ 1576 0x3ffffff, /* src_mask */ 1577 0x3ffffff, /* dst_mask */ 1578 FALSE), /* pcrel_offset */ 1579 1580 /* The reloc used for the mips16 gprel instruction. */ 1581 HOWTO (R_MIPS16_GPREL, /* type */ 1582 0, /* rightshift */ 1583 2, /* size (0 = byte, 1 = short, 2 = long) */ 1584 16, /* bitsize */ 1585 FALSE, /* pc_relative */ 1586 0, /* bitpos */ 1587 complain_overflow_signed, /* complain_on_overflow */ 1588 mips16_gprel_reloc, /* special_function */ 1589 "R_MIPS16_GPREL", /* name */ 1590 FALSE, /* partial_inplace */ 1591 0x0000ffff, /* src_mask */ 1592 0x0000ffff, /* dst_mask */ 1593 FALSE), /* pcrel_offset */ 1594 1595 /* A MIPS16 reference to the global offset table. */ 1596 HOWTO (R_MIPS16_GOT16, /* type */ 1597 0, /* rightshift */ 1598 2, /* size (0 = byte, 1 = short, 2 = long) */ 1599 16, /* bitsize */ 1600 FALSE, /* pc_relative */ 1601 0, /* bitpos */ 1602 complain_overflow_dont, /* complain_on_overflow */ 1603 _bfd_mips_elf_got16_reloc, /* special_function */ 1604 "R_MIPS16_GOT16", /* name */ 1605 FALSE, /* partial_inplace */ 1606 0x0000ffff, /* src_mask */ 1607 0x0000ffff, /* dst_mask */ 1608 FALSE), /* pcrel_offset */ 1609 1610 /* A MIPS16 call through the global offset table. */ 1611 HOWTO (R_MIPS16_CALL16, /* type */ 1612 0, /* rightshift */ 1613 2, /* size (0 = byte, 1 = short, 2 = long) */ 1614 16, /* bitsize */ 1615 FALSE, /* pc_relative */ 1616 0, /* bitpos */ 1617 complain_overflow_dont, /* complain_on_overflow */ 1618 _bfd_mips_elf_generic_reloc, /* special_function */ 1619 "R_MIPS16_CALL16", /* name */ 1620 FALSE, /* partial_inplace */ 1621 0x0000ffff, /* src_mask */ 1622 0x0000ffff, /* dst_mask */ 1623 FALSE), /* pcrel_offset */ 1624 1625 /* MIPS16 high 16 bits of symbol value. */ 1626 HOWTO (R_MIPS16_HI16, /* type */ 1627 16, /* rightshift */ 1628 2, /* size (0 = byte, 1 = short, 2 = long) */ 1629 16, /* bitsize */ 1630 FALSE, /* pc_relative */ 1631 0, /* bitpos */ 1632 complain_overflow_dont, /* complain_on_overflow */ 1633 _bfd_mips_elf_hi16_reloc, /* special_function */ 1634 "R_MIPS16_HI16", /* name */ 1635 FALSE, /* partial_inplace */ 1636 0x0000ffff, /* src_mask */ 1637 0x0000ffff, /* dst_mask */ 1638 FALSE), /* pcrel_offset */ 1639 1640 /* MIPS16 low 16 bits of symbol value. */ 1641 HOWTO (R_MIPS16_LO16, /* type */ 1642 0, /* rightshift */ 1643 2, /* size (0 = byte, 1 = short, 2 = long) */ 1644 16, /* bitsize */ 1645 FALSE, /* pc_relative */ 1646 0, /* bitpos */ 1647 complain_overflow_dont, /* complain_on_overflow */ 1648 _bfd_mips_elf_lo16_reloc, /* special_function */ 1649 "R_MIPS16_LO16", /* name */ 1650 FALSE, /* partial_inplace */ 1651 0x0000ffff, /* src_mask */ 1652 0x0000ffff, /* dst_mask */ 1653 FALSE), /* pcrel_offset */ 1654 }; 1655 1656 /* GNU extension to record C++ vtable hierarchy */ 1657 static reloc_howto_type elf_mips_gnu_vtinherit_howto = 1658 HOWTO (R_MIPS_GNU_VTINHERIT, /* type */ 1659 0, /* rightshift */ 1660 2, /* size (0 = byte, 1 = short, 2 = long) */ 1661 0, /* bitsize */ 1662 FALSE, /* pc_relative */ 1663 0, /* bitpos */ 1664 complain_overflow_dont, /* complain_on_overflow */ 1665 NULL, /* special_function */ 1666 "R_MIPS_GNU_VTINHERIT", /* name */ 1667 FALSE, /* partial_inplace */ 1668 0, /* src_mask */ 1669 0, /* dst_mask */ 1670 FALSE); /* pcrel_offset */ 1671 1672 /* GNU extension to record C++ vtable member usage */ 1673 static reloc_howto_type elf_mips_gnu_vtentry_howto = 1674 HOWTO (R_MIPS_GNU_VTENTRY, /* type */ 1675 0, /* rightshift */ 1676 2, /* size (0 = byte, 1 = short, 2 = long) */ 1677 0, /* bitsize */ 1678 FALSE, /* pc_relative */ 1679 0, /* bitpos */ 1680 complain_overflow_dont, /* complain_on_overflow */ 1681 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 1682 "R_MIPS_GNU_VTENTRY", /* name */ 1683 FALSE, /* partial_inplace */ 1684 0, /* src_mask */ 1685 0, /* dst_mask */ 1686 FALSE); /* pcrel_offset */ 1687 1688 /* 16 bit offset for pc-relative branches. */ 1689 static reloc_howto_type elf_mips_gnu_rel16_s2 = 1690 HOWTO (R_MIPS_GNU_REL16_S2, /* type */ 1691 2, /* rightshift */ 1692 2, /* size (0 = byte, 1 = short, 2 = long) */ 1693 16, /* bitsize */ 1694 TRUE, /* pc_relative */ 1695 0, /* bitpos */ 1696 complain_overflow_signed, /* complain_on_overflow */ 1697 _bfd_mips_elf_generic_reloc, /* special_function */ 1698 "R_MIPS_GNU_REL16_S2", /* name */ 1699 TRUE, /* partial_inplace */ 1700 0x0000ffff, /* src_mask */ 1701 0x0000ffff, /* dst_mask */ 1702 TRUE); /* pcrel_offset */ 1703 1704 /* 16 bit offset for pc-relative branches. */ 1705 static reloc_howto_type elf_mips_gnu_rela16_s2 = 1706 HOWTO (R_MIPS_GNU_REL16_S2, /* type */ 1707 2, /* rightshift */ 1708 2, /* size (0 = byte, 1 = short, 2 = long) */ 1709 16, /* bitsize */ 1710 TRUE, /* pc_relative */ 1711 0, /* bitpos */ 1712 complain_overflow_signed, /* complain_on_overflow */ 1713 _bfd_mips_elf_generic_reloc, /* special_function */ 1714 "R_MIPS_GNU_REL16_S2", /* name */ 1715 FALSE, /* partial_inplace */ 1716 0, /* src_mask */ 1717 0x0000ffff, /* dst_mask */ 1718 TRUE); /* pcrel_offset */ 1719 1720 /* Originally a VxWorks extension, but now used for other systems too. */ 1721 static reloc_howto_type elf_mips_copy_howto = 1722 HOWTO (R_MIPS_COPY, /* type */ 1723 0, /* rightshift */ 1724 0, /* this one is variable size */ 1725 0, /* bitsize */ 1726 FALSE, /* pc_relative */ 1727 0, /* bitpos */ 1728 complain_overflow_bitfield, /* complain_on_overflow */ 1729 bfd_elf_generic_reloc, /* special_function */ 1730 "R_MIPS_COPY", /* name */ 1731 FALSE, /* partial_inplace */ 1732 0x0, /* src_mask */ 1733 0x0, /* dst_mask */ 1734 FALSE); /* pcrel_offset */ 1735 1736 /* Originally a VxWorks extension, but now used for other systems too. */ 1737 static reloc_howto_type elf_mips_jump_slot_howto = 1738 HOWTO (R_MIPS_JUMP_SLOT, /* type */ 1739 0, /* rightshift */ 1740 2, /* size (0 = byte, 1 = short, 2 = long) */ 1741 32, /* bitsize */ 1742 FALSE, /* pc_relative */ 1743 0, /* bitpos */ 1744 complain_overflow_bitfield, /* complain_on_overflow */ 1745 bfd_elf_generic_reloc, /* special_function */ 1746 "R_MIPS_JUMP_SLOT", /* name */ 1747 FALSE, /* partial_inplace */ 1748 0x0, /* src_mask */ 1749 0x0, /* dst_mask */ 1750 FALSE); /* pcrel_offset */ 1751 1752 /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a 1753 dangerous relocation. */ 1754 1755 static bfd_boolean 1756 mips_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp) 1757 { 1758 unsigned int count; 1759 asymbol **sym; 1760 unsigned int i; 1761 1762 /* If we've already figured out what GP will be, just return it. */ 1763 *pgp = _bfd_get_gp_value (output_bfd); 1764 if (*pgp) 1765 return TRUE; 1766 1767 count = bfd_get_symcount (output_bfd); 1768 sym = bfd_get_outsymbols (output_bfd); 1769 1770 /* The linker script will have created a symbol named `_gp' with the 1771 appropriate value. */ 1772 if (sym == NULL) 1773 i = count; 1774 else 1775 { 1776 for (i = 0; i < count; i++, sym++) 1777 { 1778 register const char *name; 1779 1780 name = bfd_asymbol_name (*sym); 1781 if (*name == '_' && strcmp (name, "_gp") == 0) 1782 { 1783 *pgp = bfd_asymbol_value (*sym); 1784 _bfd_set_gp_value (output_bfd, *pgp); 1785 break; 1786 } 1787 } 1788 } 1789 1790 if (i >= count) 1791 { 1792 /* Only get the error once. */ 1793 *pgp = 4; 1794 _bfd_set_gp_value (output_bfd, *pgp); 1795 return FALSE; 1796 } 1797 1798 return TRUE; 1799 } 1800 1801 /* We have to figure out the gp value, so that we can adjust the 1802 symbol value correctly. We look up the symbol _gp in the output 1803 BFD. If we can't find it, we're stuck. We cache it in the ELF 1804 target data. We don't need to adjust the symbol value for an 1805 external symbol if we are producing relocatable output. */ 1806 1807 static bfd_reloc_status_type 1808 mips_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable, 1809 char **error_message, bfd_vma *pgp) 1810 { 1811 if (bfd_is_und_section (symbol->section) 1812 && ! relocatable) 1813 { 1814 *pgp = 0; 1815 return bfd_reloc_undefined; 1816 } 1817 1818 *pgp = _bfd_get_gp_value (output_bfd); 1819 if (*pgp == 0 1820 && (! relocatable 1821 || (symbol->flags & BSF_SECTION_SYM) != 0)) 1822 { 1823 if (relocatable) 1824 { 1825 /* Make up a value. */ 1826 *pgp = symbol->section->output_section->vma /*+ 0x4000*/; 1827 _bfd_set_gp_value (output_bfd, *pgp); 1828 } 1829 else if (!mips_elf_assign_gp (output_bfd, pgp)) 1830 { 1831 *error_message = 1832 (char *) _("GP relative relocation when _gp not defined"); 1833 return bfd_reloc_dangerous; 1834 } 1835 } 1836 1837 return bfd_reloc_ok; 1838 } 1839 1840 /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must 1841 become the offset from the gp register. */ 1842 1843 static bfd_reloc_status_type 1844 mips_elf_gprel16_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, 1845 asymbol *symbol, void *data ATTRIBUTE_UNUSED, 1846 asection *input_section, bfd *output_bfd, 1847 char **error_message ATTRIBUTE_UNUSED) 1848 { 1849 bfd_boolean relocatable; 1850 bfd_reloc_status_type ret; 1851 bfd_vma gp; 1852 1853 if (output_bfd != NULL) 1854 relocatable = TRUE; 1855 else 1856 { 1857 relocatable = FALSE; 1858 output_bfd = symbol->section->output_section->owner; 1859 } 1860 1861 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message, 1862 &gp); 1863 if (ret != bfd_reloc_ok) 1864 return ret; 1865 1866 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, 1867 input_section, relocatable, 1868 data, gp); 1869 } 1870 1871 /* Do a R_MIPS_LITERAL relocation. */ 1872 1873 static bfd_reloc_status_type 1874 mips_elf_literal_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 1875 void *data, asection *input_section, bfd *output_bfd, 1876 char **error_message) 1877 { 1878 bfd_boolean relocatable; 1879 bfd_reloc_status_type ret; 1880 bfd_vma gp; 1881 1882 /* R_MIPS_LITERAL relocations are defined for local symbols only. */ 1883 if (output_bfd != NULL 1884 && (symbol->flags & BSF_SECTION_SYM) == 0 1885 && (symbol->flags & BSF_LOCAL) != 0) 1886 { 1887 *error_message = (char *) 1888 _("literal relocation occurs for an external symbol"); 1889 return bfd_reloc_outofrange; 1890 } 1891 1892 /* FIXME: The entries in the .lit8 and .lit4 sections should be merged. */ 1893 if (output_bfd != NULL) 1894 relocatable = TRUE; 1895 else 1896 { 1897 relocatable = FALSE; 1898 output_bfd = symbol->section->output_section->owner; 1899 } 1900 1901 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message, 1902 &gp); 1903 if (ret != bfd_reloc_ok) 1904 return ret; 1905 1906 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, 1907 input_section, relocatable, 1908 data, gp); 1909 } 1910 1911 /* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must 1912 become the offset from the gp register. */ 1913 1914 static bfd_reloc_status_type 1915 mips_elf_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 1916 void *data, asection *input_section, bfd *output_bfd, 1917 char **error_message) 1918 { 1919 bfd_boolean relocatable; 1920 bfd_reloc_status_type ret; 1921 bfd_vma gp; 1922 1923 /* R_MIPS_GPREL32 relocations are defined for local symbols only. */ 1924 if (output_bfd != NULL 1925 && (symbol->flags & BSF_SECTION_SYM) == 0 1926 && (symbol->flags & BSF_LOCAL) != 0) 1927 { 1928 *error_message = (char *) 1929 _("32bits gp relative relocation occurs for an external symbol"); 1930 return bfd_reloc_outofrange; 1931 } 1932 1933 if (output_bfd != NULL) 1934 { 1935 relocatable = TRUE; 1936 gp = _bfd_get_gp_value (output_bfd); 1937 } 1938 else 1939 { 1940 relocatable = FALSE; 1941 output_bfd = symbol->section->output_section->owner; 1942 1943 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, 1944 error_message, &gp); 1945 if (ret != bfd_reloc_ok) 1946 return ret; 1947 } 1948 1949 return gprel32_with_gp (abfd, symbol, reloc_entry, input_section, 1950 relocatable, data, gp); 1951 } 1952 1953 static bfd_reloc_status_type 1954 gprel32_with_gp (bfd *abfd, asymbol *symbol, arelent *reloc_entry, 1955 asection *input_section, bfd_boolean relocatable, 1956 void *data, bfd_vma gp) 1957 { 1958 bfd_vma relocation; 1959 unsigned long val; 1960 1961 if (bfd_is_com_section (symbol->section)) 1962 relocation = 0; 1963 else 1964 relocation = symbol->value; 1965 1966 relocation += symbol->section->output_section->vma; 1967 relocation += symbol->section->output_offset; 1968 1969 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) 1970 return bfd_reloc_outofrange; 1971 1972 if (reloc_entry->howto->src_mask == 0) 1973 val = 0; 1974 else 1975 val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 1976 1977 /* Set val to the offset into the section or symbol. */ 1978 val += reloc_entry->addend; 1979 1980 /* Adjust val for the final section location and GP value. If we 1981 are producing relocatable output, we don't want to do this for 1982 an external symbol. */ 1983 if (! relocatable 1984 || (symbol->flags & BSF_SECTION_SYM) != 0) 1985 val += relocation - gp; 1986 1987 bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address); 1988 1989 if (relocatable) 1990 reloc_entry->address += input_section->output_offset; 1991 1992 return bfd_reloc_ok; 1993 } 1994 1995 /* Do a R_MIPS_SHIFT6 relocation. The MSB of the shift is stored at bit 2, 1996 the rest is at bits 6-10. The bitpos already got right by the howto. */ 1997 1998 static bfd_reloc_status_type 1999 mips_elf_shift6_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 2000 void *data, asection *input_section, bfd *output_bfd, 2001 char **error_message) 2002 { 2003 if (reloc_entry->howto->partial_inplace) 2004 { 2005 reloc_entry->addend = ((reloc_entry->addend & 0x00007c0) 2006 | (reloc_entry->addend & 0x00000800) >> 9); 2007 } 2008 2009 return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, 2010 input_section, output_bfd, 2011 error_message); 2012 } 2013 2014 /* Handle a mips16 GP relative reloc. */ 2015 2016 static bfd_reloc_status_type 2017 mips16_gprel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 2018 void *data, asection *input_section, bfd *output_bfd, 2019 char **error_message) 2020 { 2021 bfd_boolean relocatable; 2022 bfd_reloc_status_type ret; 2023 bfd_byte *location; 2024 bfd_vma gp; 2025 2026 /* If we're relocating, and this is an external symbol, we don't want 2027 to change anything. */ 2028 if (output_bfd != NULL 2029 && (symbol->flags & BSF_SECTION_SYM) == 0 2030 && (symbol->flags & BSF_LOCAL) != 0) 2031 { 2032 reloc_entry->address += input_section->output_offset; 2033 return bfd_reloc_ok; 2034 } 2035 2036 if (output_bfd != NULL) 2037 relocatable = TRUE; 2038 else 2039 { 2040 relocatable = FALSE; 2041 output_bfd = symbol->section->output_section->owner; 2042 } 2043 2044 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message, 2045 &gp); 2046 if (ret != bfd_reloc_ok) 2047 return ret; 2048 2049 location = (bfd_byte *) data + reloc_entry->address; 2050 _bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE, 2051 location); 2052 ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, 2053 input_section, relocatable, 2054 data, gp); 2055 _bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, !relocatable, 2056 location); 2057 2058 return ret; 2059 } 2060 2061 /* A mapping from BFD reloc types to MIPS ELF reloc types. */ 2062 2063 struct elf_reloc_map { 2064 bfd_reloc_code_real_type bfd_val; 2065 enum elf_mips_reloc_type elf_val; 2066 }; 2067 2068 static const struct elf_reloc_map mips_reloc_map[] = 2069 { 2070 { BFD_RELOC_NONE, R_MIPS_NONE }, 2071 { BFD_RELOC_16, R_MIPS_16 }, 2072 { BFD_RELOC_32, R_MIPS_32 }, 2073 /* There is no BFD reloc for R_MIPS_REL32. */ 2074 { BFD_RELOC_CTOR, R_MIPS_32 }, 2075 { BFD_RELOC_64, R_MIPS_64 }, 2076 { BFD_RELOC_16_PCREL_S2, R_MIPS_PC16 }, 2077 { BFD_RELOC_HI16_S, R_MIPS_HI16 }, 2078 { BFD_RELOC_LO16, R_MIPS_LO16 }, 2079 { BFD_RELOC_GPREL16, R_MIPS_GPREL16 }, 2080 { BFD_RELOC_GPREL32, R_MIPS_GPREL32 }, 2081 { BFD_RELOC_MIPS_JMP, R_MIPS_26 }, 2082 { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL }, 2083 { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 }, 2084 { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 }, 2085 { BFD_RELOC_MIPS_SHIFT5, R_MIPS_SHIFT5 }, 2086 { BFD_RELOC_MIPS_SHIFT6, R_MIPS_SHIFT6 }, 2087 { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP }, 2088 { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE }, 2089 { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST }, 2090 { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 }, 2091 { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 }, 2092 { BFD_RELOC_MIPS_SUB, R_MIPS_SUB }, 2093 { BFD_RELOC_MIPS_INSERT_A, R_MIPS_INSERT_A }, 2094 { BFD_RELOC_MIPS_INSERT_B, R_MIPS_INSERT_B }, 2095 { BFD_RELOC_MIPS_DELETE, R_MIPS_DELETE }, 2096 { BFD_RELOC_MIPS_HIGHEST, R_MIPS_HIGHEST }, 2097 { BFD_RELOC_MIPS_HIGHER, R_MIPS_HIGHER }, 2098 { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 }, 2099 { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 }, 2100 { BFD_RELOC_MIPS_SCN_DISP, R_MIPS_SCN_DISP }, 2101 { BFD_RELOC_MIPS_REL16, R_MIPS_REL16 }, 2102 /* Use of R_MIPS_ADD_IMMEDIATE and R_MIPS_PJUMP is deprecated. */ 2103 { BFD_RELOC_MIPS_RELGOT, R_MIPS_RELGOT }, 2104 { BFD_RELOC_MIPS_JALR, R_MIPS_JALR }, 2105 { BFD_RELOC_MIPS_TLS_DTPMOD32, R_MIPS_TLS_DTPMOD32 }, 2106 { BFD_RELOC_MIPS_TLS_DTPREL32, R_MIPS_TLS_DTPREL32 }, 2107 { BFD_RELOC_MIPS_TLS_DTPMOD64, R_MIPS_TLS_DTPMOD64 }, 2108 { BFD_RELOC_MIPS_TLS_DTPREL64, R_MIPS_TLS_DTPREL64 }, 2109 { BFD_RELOC_MIPS_TLS_GD, R_MIPS_TLS_GD }, 2110 { BFD_RELOC_MIPS_TLS_LDM, R_MIPS_TLS_LDM }, 2111 { BFD_RELOC_MIPS_TLS_DTPREL_HI16, R_MIPS_TLS_DTPREL_HI16 }, 2112 { BFD_RELOC_MIPS_TLS_DTPREL_LO16, R_MIPS_TLS_DTPREL_LO16 }, 2113 { BFD_RELOC_MIPS_TLS_GOTTPREL, R_MIPS_TLS_GOTTPREL }, 2114 { BFD_RELOC_MIPS_TLS_TPREL32, R_MIPS_TLS_TPREL32 }, 2115 { BFD_RELOC_MIPS_TLS_TPREL64, R_MIPS_TLS_TPREL64 }, 2116 { BFD_RELOC_MIPS_TLS_TPREL_HI16, R_MIPS_TLS_TPREL_HI16 }, 2117 { BFD_RELOC_MIPS_TLS_TPREL_LO16, R_MIPS_TLS_TPREL_LO16 } 2118 }; 2119 2120 static const struct elf_reloc_map mips16_reloc_map[] = 2121 { 2122 { BFD_RELOC_MIPS16_JMP, R_MIPS16_26 - R_MIPS16_min }, 2123 { BFD_RELOC_MIPS16_GPREL, R_MIPS16_GPREL - R_MIPS16_min }, 2124 { BFD_RELOC_MIPS16_GOT16, R_MIPS16_GOT16 - R_MIPS16_min }, 2125 { BFD_RELOC_MIPS16_CALL16, R_MIPS16_CALL16 - R_MIPS16_min }, 2126 { BFD_RELOC_MIPS16_HI16_S, R_MIPS16_HI16 - R_MIPS16_min }, 2127 { BFD_RELOC_MIPS16_LO16, R_MIPS16_LO16 - R_MIPS16_min }, 2128 }; 2129 2130 /* Given a BFD reloc type, return a howto structure. */ 2131 2132 static reloc_howto_type * 2133 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, 2134 bfd_reloc_code_real_type code) 2135 { 2136 unsigned int i; 2137 /* FIXME: We default to RELA here instead of choosing the right 2138 relocation variant. */ 2139 reloc_howto_type *howto_table = elf_mips_howto_table_rela; 2140 reloc_howto_type *howto16_table = elf_mips16_howto_table_rela; 2141 2142 for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); 2143 i++) 2144 { 2145 if (mips_reloc_map[i].bfd_val == code) 2146 return &howto_table[(int) mips_reloc_map[i].elf_val]; 2147 } 2148 2149 for (i = 0; i < sizeof (mips16_reloc_map) / sizeof (struct elf_reloc_map); 2150 i++) 2151 { 2152 if (mips16_reloc_map[i].bfd_val == code) 2153 return &howto16_table[(int) mips16_reloc_map[i].elf_val]; 2154 } 2155 2156 switch (code) 2157 { 2158 case BFD_RELOC_VTABLE_INHERIT: 2159 return &elf_mips_gnu_vtinherit_howto; 2160 case BFD_RELOC_VTABLE_ENTRY: 2161 return &elf_mips_gnu_vtentry_howto; 2162 case BFD_RELOC_MIPS_COPY: 2163 return &elf_mips_copy_howto; 2164 case BFD_RELOC_MIPS_JUMP_SLOT: 2165 return &elf_mips_jump_slot_howto; 2166 default: 2167 bfd_set_error (bfd_error_bad_value); 2168 return NULL; 2169 } 2170 } 2171 2172 static reloc_howto_type * 2173 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 2174 const char *r_name) 2175 { 2176 unsigned int i; 2177 2178 for (i = 0; 2179 i < (sizeof (elf_mips_howto_table_rela) 2180 / sizeof (elf_mips_howto_table_rela[0])); 2181 i++) 2182 if (elf_mips_howto_table_rela[i].name != NULL 2183 && strcasecmp (elf_mips_howto_table_rela[i].name, r_name) == 0) 2184 return &elf_mips_howto_table_rela[i]; 2185 2186 for (i = 0; 2187 i < (sizeof (elf_mips16_howto_table_rela) 2188 / sizeof (elf_mips16_howto_table_rela[0])); 2189 i++) 2190 if (elf_mips16_howto_table_rela[i].name != NULL 2191 && strcasecmp (elf_mips16_howto_table_rela[i].name, r_name) == 0) 2192 return &elf_mips16_howto_table_rela[i]; 2193 2194 if (strcasecmp (elf_mips_gnu_vtinherit_howto.name, r_name) == 0) 2195 return &elf_mips_gnu_vtinherit_howto; 2196 if (strcasecmp (elf_mips_gnu_vtentry_howto.name, r_name) == 0) 2197 return &elf_mips_gnu_vtentry_howto; 2198 if (strcasecmp (elf_mips_gnu_rel16_s2.name, r_name) == 0) 2199 return &elf_mips_gnu_rel16_s2; 2200 if (strcasecmp (elf_mips_gnu_rela16_s2.name, r_name) == 0) 2201 return &elf_mips_gnu_rela16_s2; 2202 if (strcasecmp (elf_mips_copy_howto.name, r_name) == 0) 2203 return &elf_mips_copy_howto; 2204 if (strcasecmp (elf_mips_jump_slot_howto.name, r_name) == 0) 2205 return &elf_mips_jump_slot_howto; 2206 2207 return NULL; 2208 } 2209 2210 /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */ 2211 2212 static reloc_howto_type * 2213 mips_elf_n32_rtype_to_howto (unsigned int r_type, bfd_boolean rela_p) 2214 { 2215 switch (r_type) 2216 { 2217 case R_MIPS_GNU_VTINHERIT: 2218 return &elf_mips_gnu_vtinherit_howto; 2219 case R_MIPS_GNU_VTENTRY: 2220 return &elf_mips_gnu_vtentry_howto; 2221 case R_MIPS_GNU_REL16_S2: 2222 if (rela_p) 2223 return &elf_mips_gnu_rela16_s2; 2224 else 2225 return &elf_mips_gnu_rel16_s2; 2226 case R_MIPS_COPY: 2227 return &elf_mips_copy_howto; 2228 case R_MIPS_JUMP_SLOT: 2229 return &elf_mips_jump_slot_howto; 2230 default: 2231 if (r_type >= R_MIPS16_min && r_type < R_MIPS16_max) 2232 { 2233 if (rela_p) 2234 return &elf_mips16_howto_table_rela[r_type - R_MIPS16_min]; 2235 else 2236 return &elf_mips16_howto_table_rel[r_type - R_MIPS16_min]; 2237 } 2238 BFD_ASSERT (r_type < (unsigned int) R_MIPS_max); 2239 if (rela_p) 2240 return &elf_mips_howto_table_rela[r_type]; 2241 else 2242 return &elf_mips_howto_table_rel[r_type]; 2243 break; 2244 } 2245 } 2246 2247 /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */ 2248 2249 static void 2250 mips_info_to_howto_rel (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst) 2251 { 2252 unsigned int r_type; 2253 2254 r_type = ELF32_R_TYPE (dst->r_info); 2255 cache_ptr->howto = mips_elf_n32_rtype_to_howto (r_type, FALSE); 2256 2257 /* The addend for a GPREL16 or LITERAL relocation comes from the GP 2258 value for the object file. We get the addend now, rather than 2259 when we do the relocation, because the symbol manipulations done 2260 by the linker may cause us to lose track of the input BFD. */ 2261 if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0 2262 && (gprel16_reloc_p (r_type) || r_type == (unsigned int) R_MIPS_LITERAL)) 2263 cache_ptr->addend = elf_gp (abfd); 2264 } 2265 2266 /* Given a MIPS Elf_Internal_Rela, fill in an arelent structure. */ 2267 2268 static void 2269 mips_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, 2270 arelent *cache_ptr, Elf_Internal_Rela *dst) 2271 { 2272 unsigned int r_type; 2273 2274 r_type = ELF32_R_TYPE (dst->r_info); 2275 cache_ptr->howto = mips_elf_n32_rtype_to_howto (r_type, TRUE); 2276 cache_ptr->addend = dst->r_addend; 2277 } 2278 2279 /* Determine whether a symbol is global for the purposes of splitting 2280 the symbol table into global symbols and local symbols. At least 2281 on Irix 5, this split must be between section symbols and all other 2282 symbols. On most ELF targets the split is between static symbols 2283 and externally visible symbols. */ 2284 2285 static bfd_boolean 2286 mips_elf_sym_is_global (bfd *abfd ATTRIBUTE_UNUSED, asymbol *sym) 2287 { 2288 if (SGI_COMPAT (abfd)) 2289 return (sym->flags & BSF_SECTION_SYM) == 0; 2290 else 2291 return ((sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_GNU_UNIQUE)) != 0 2292 || bfd_is_und_section (bfd_get_section (sym)) 2293 || bfd_is_com_section (bfd_get_section (sym))); 2294 } 2295 2296 /* Set the right machine number for a MIPS ELF file. */ 2297 2298 static bfd_boolean 2299 mips_elf_n32_object_p (bfd *abfd) 2300 { 2301 unsigned long mach; 2302 2303 /* Irix 5 and 6 are broken. Object file symbol tables are not always 2304 sorted correctly such that local symbols precede global symbols, 2305 and the sh_info field in the symbol table is not always right. */ 2306 if (SGI_COMPAT (abfd)) 2307 elf_bad_symtab (abfd) = TRUE; 2308 2309 mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags); 2310 bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach); 2311 2312 if (! ABI_N32_P(abfd)) 2313 return FALSE; 2314 2315 return TRUE; 2316 } 2317 2318 /* Support for core dump NOTE sections. */ 2319 static bfd_boolean 2320 elf32_mips_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 2321 { 2322 int offset; 2323 unsigned int size; 2324 2325 switch (note->descsz) 2326 { 2327 default: 2328 return FALSE; 2329 2330 case 440: /* Linux/MIPS N32 */ 2331 /* pr_cursig */ 2332 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); 2333 2334 /* pr_pid */ 2335 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24); 2336 2337 /* pr_reg */ 2338 offset = 72; 2339 size = 360; 2340 2341 break; 2342 } 2343 2344 /* Make a ".reg/999" section. */ 2345 return _bfd_elfcore_make_pseudosection (abfd, ".reg", size, 2346 note->descpos + offset); 2347 } 2348 2349 static bfd_boolean 2350 elf32_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 2351 { 2352 switch (note->descsz) 2353 { 2354 default: 2355 return FALSE; 2356 2357 case 128: /* Linux/MIPS elf_prpsinfo */ 2358 elf_tdata (abfd)->core_program 2359 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); 2360 elf_tdata (abfd)->core_command 2361 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); 2362 } 2363 2364 /* Note that for some reason, a spurious space is tacked 2365 onto the end of the args in some (at least one anyway) 2366 implementations, so strip it off if it exists. */ 2367 2368 { 2369 char *command = elf_tdata (abfd)->core_command; 2370 int n = strlen (command); 2371 2372 if (0 < n && command[n - 1] == ' ') 2373 command[n - 1] = '\0'; 2374 } 2375 2376 return TRUE; 2377 } 2378 2379 /* Depending on the target vector we generate some version of Irix 2380 executables or "normal" MIPS ELF ABI executables. */ 2381 static irix_compat_t 2382 elf_n32_mips_irix_compat (bfd *abfd) 2383 { 2384 if ((abfd->xvec == &bfd_elf32_nbigmips_vec) 2385 || (abfd->xvec == &bfd_elf32_nlittlemips_vec)) 2386 return ict_irix6; 2387 else 2388 return ict_none; 2389 } 2390 2391 /* ECOFF swapping routines. These are used when dealing with the 2392 .mdebug section, which is in the ECOFF debugging format. */ 2393 static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = { 2394 /* Symbol table magic number. */ 2395 magicSym, 2396 /* Alignment of debugging information. E.g., 4. */ 2397 4, 2398 /* Sizes of external symbolic information. */ 2399 sizeof (struct hdr_ext), 2400 sizeof (struct dnr_ext), 2401 sizeof (struct pdr_ext), 2402 sizeof (struct sym_ext), 2403 sizeof (struct opt_ext), 2404 sizeof (struct fdr_ext), 2405 sizeof (struct rfd_ext), 2406 sizeof (struct ext_ext), 2407 /* Functions to swap in external symbolic data. */ 2408 ecoff_swap_hdr_in, 2409 ecoff_swap_dnr_in, 2410 ecoff_swap_pdr_in, 2411 ecoff_swap_sym_in, 2412 ecoff_swap_opt_in, 2413 ecoff_swap_fdr_in, 2414 ecoff_swap_rfd_in, 2415 ecoff_swap_ext_in, 2416 _bfd_ecoff_swap_tir_in, 2417 _bfd_ecoff_swap_rndx_in, 2418 /* Functions to swap out external symbolic data. */ 2419 ecoff_swap_hdr_out, 2420 ecoff_swap_dnr_out, 2421 ecoff_swap_pdr_out, 2422 ecoff_swap_sym_out, 2423 ecoff_swap_opt_out, 2424 ecoff_swap_fdr_out, 2425 ecoff_swap_rfd_out, 2426 ecoff_swap_ext_out, 2427 _bfd_ecoff_swap_tir_out, 2428 _bfd_ecoff_swap_rndx_out, 2429 /* Function to read in symbolic data. */ 2430 _bfd_mips_elf_read_ecoff_info 2431 }; 2432 2433 #define ELF_ARCH bfd_arch_mips 2434 #define ELF_TARGET_ID MIPS_ELF_DATA 2435 #define ELF_MACHINE_CODE EM_MIPS 2436 2437 #define elf_backend_collect TRUE 2438 #define elf_backend_type_change_ok TRUE 2439 #define elf_backend_can_gc_sections TRUE 2440 #define elf_info_to_howto mips_info_to_howto_rela 2441 #define elf_info_to_howto_rel mips_info_to_howto_rel 2442 #define elf_backend_sym_is_global mips_elf_sym_is_global 2443 #define elf_backend_object_p mips_elf_n32_object_p 2444 #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing 2445 #define elf_backend_section_processing _bfd_mips_elf_section_processing 2446 #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr 2447 #define elf_backend_fake_sections _bfd_mips_elf_fake_sections 2448 #define elf_backend_section_from_bfd_section \ 2449 _bfd_mips_elf_section_from_bfd_section 2450 #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook 2451 #define elf_backend_link_output_symbol_hook \ 2452 _bfd_mips_elf_link_output_symbol_hook 2453 #define elf_backend_create_dynamic_sections \ 2454 _bfd_mips_elf_create_dynamic_sections 2455 #define elf_backend_check_relocs _bfd_mips_elf_check_relocs 2456 #define elf_backend_merge_symbol_attribute \ 2457 _bfd_mips_elf_merge_symbol_attribute 2458 #define elf_backend_get_target_dtag _bfd_mips_elf_get_target_dtag 2459 #define elf_backend_adjust_dynamic_symbol \ 2460 _bfd_mips_elf_adjust_dynamic_symbol 2461 #define elf_backend_always_size_sections \ 2462 _bfd_mips_elf_always_size_sections 2463 #define elf_backend_size_dynamic_sections \ 2464 _bfd_mips_elf_size_dynamic_sections 2465 #define elf_backend_init_index_section _bfd_elf_init_1_index_section 2466 #define elf_backend_relocate_section _bfd_mips_elf_relocate_section 2467 #define elf_backend_finish_dynamic_symbol \ 2468 _bfd_mips_elf_finish_dynamic_symbol 2469 #define elf_backend_finish_dynamic_sections \ 2470 _bfd_mips_elf_finish_dynamic_sections 2471 #define elf_backend_final_write_processing \ 2472 _bfd_mips_elf_final_write_processing 2473 #define elf_backend_additional_program_headers \ 2474 _bfd_mips_elf_additional_program_headers 2475 #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map 2476 #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook 2477 #define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook 2478 #define elf_backend_copy_indirect_symbol \ 2479 _bfd_mips_elf_copy_indirect_symbol 2480 #define elf_backend_grok_prstatus elf32_mips_grok_prstatus 2481 #define elf_backend_grok_psinfo elf32_mips_grok_psinfo 2482 #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap 2483 2484 #define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO) 2485 2486 /* MIPS n32 ELF can use a mixture of REL and RELA, but some Relocations 2487 work better/work only in RELA, so we default to this. */ 2488 #define elf_backend_may_use_rel_p 1 2489 #define elf_backend_may_use_rela_p 1 2490 #define elf_backend_default_use_rela_p 1 2491 #define elf_backend_rela_plts_and_copies_p 0 2492 #define elf_backend_sign_extend_vma TRUE 2493 #define elf_backend_plt_readonly 1 2494 #define elf_backend_plt_sym_val _bfd_mips_elf_plt_sym_val 2495 2496 #define elf_backend_discard_info _bfd_mips_elf_discard_info 2497 #define elf_backend_ignore_discarded_relocs \ 2498 _bfd_mips_elf_ignore_discarded_relocs 2499 #define elf_backend_write_section _bfd_mips_elf_write_section 2500 #define elf_backend_mips_irix_compat elf_n32_mips_irix_compat 2501 #define elf_backend_mips_rtype_to_howto mips_elf_n32_rtype_to_howto 2502 #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line 2503 #define bfd_elf32_find_inliner_info _bfd_mips_elf_find_inliner_info 2504 #define bfd_elf32_new_section_hook _bfd_mips_elf_new_section_hook 2505 #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents 2506 #define bfd_elf32_bfd_get_relocated_section_contents \ 2507 _bfd_elf_mips_get_relocated_section_contents 2508 #define bfd_elf32_bfd_link_hash_table_create \ 2509 _bfd_mips_elf_link_hash_table_create 2510 #define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link 2511 #define bfd_elf32_bfd_merge_private_bfd_data \ 2512 _bfd_mips_elf_merge_private_bfd_data 2513 #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags 2514 #define bfd_elf32_bfd_print_private_bfd_data \ 2515 _bfd_mips_elf_print_private_bfd_data 2516 #define bfd_elf32_bfd_relax_section _bfd_mips_relax_section 2517 2518 /* Support for SGI-ish mips targets using n32 ABI. */ 2519 2520 #define TARGET_LITTLE_SYM bfd_elf32_nlittlemips_vec 2521 #define TARGET_LITTLE_NAME "elf32-nlittlemips" 2522 #define TARGET_BIG_SYM bfd_elf32_nbigmips_vec 2523 #define TARGET_BIG_NAME "elf32-nbigmips" 2524 2525 #define ELF_MAXPAGESIZE 0x10000 2526 #define ELF_COMMONPAGESIZE 0x1000 2527 2528 #include "elf32-target.h" 2529 2530 /* Support for traditional mips targets using n32 ABI. */ 2531 #undef TARGET_LITTLE_SYM 2532 #undef TARGET_LITTLE_NAME 2533 #undef TARGET_BIG_SYM 2534 #undef TARGET_BIG_NAME 2535 2536 #undef ELF_MAXPAGESIZE 2537 #undef ELF_COMMONPAGESIZE 2538 2539 #define TARGET_LITTLE_SYM bfd_elf32_ntradlittlemips_vec 2540 #define TARGET_LITTLE_NAME "elf32-ntradlittlemips" 2541 #define TARGET_BIG_SYM bfd_elf32_ntradbigmips_vec 2542 #define TARGET_BIG_NAME "elf32-ntradbigmips" 2543 2544 #define ELF_MAXPAGESIZE 0x10000 2545 #define ELF_COMMONPAGESIZE 0x1000 2546 #define elf32_bed elf32_tradbed 2547 2548 /* Include the target file again for this target. */ 2549 #include "elf32-target.h" 2550 2551 2552 /* FreeBSD support. */ 2553 2554 #undef TARGET_LITTLE_SYM 2555 #undef TARGET_LITTLE_NAME 2556 #undef TARGET_BIG_SYM 2557 #undef TARGET_BIG_NAME 2558 2559 #define TARGET_LITTLE_SYM bfd_elf32_ntradlittlemips_freebsd_vec 2560 #define TARGET_LITTLE_NAME "elf32-ntradlittlemips-freebsd" 2561 #define TARGET_BIG_SYM bfd_elf32_ntradbigmips_freebsd_vec 2562 #define TARGET_BIG_NAME "elf32-ntradbigmips-freebsd" 2563 2564 #undef ELF_OSABI 2565 #define ELF_OSABI ELFOSABI_FREEBSD 2566 2567 /* The kernel recognizes executables as valid only if they carry a 2568 "FreeBSD" label in the ELF header. So we put this label on all 2569 executables and (for simplicity) also all other object files. */ 2570 2571 static void 2572 elf_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info) 2573 { 2574 _bfd_elf_set_osabi (abfd, info); 2575 } 2576 2577 #undef elf_backend_post_process_headers 2578 #define elf_backend_post_process_headers elf_fbsd_post_process_headers 2579 #undef elf32_bed 2580 #define elf32_bed elf32_fbsd_tradbed 2581 2582 #include "elf32-target.h" 2583