elfn32-mips.c revision 1.1.1.1
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 (at) cygnus.com>. 7 N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC. 8 <mark (at) codesourcery.com> 9 Traditional MIPS targets support added by Koundinya.K, Dansk Data 10 Elektronik & Operations Research Group. <kk (at) 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. */ 1690 static reloc_howto_type elf_mips_gnu_rel16_s2 = 1691 HOWTO (R_MIPS_GNU_REL16_S2, /* type */ 1692 2, /* rightshift */ 1693 2, /* size (0 = byte, 1 = short, 2 = long) */ 1694 16, /* bitsize */ 1695 TRUE, /* pc_relative */ 1696 0, /* bitpos */ 1697 complain_overflow_signed, /* complain_on_overflow */ 1698 _bfd_mips_elf_generic_reloc, /* special_function */ 1699 "R_MIPS_GNU_REL16_S2", /* name */ 1700 TRUE, /* partial_inplace */ 1701 0x0000ffff, /* src_mask */ 1702 0x0000ffff, /* dst_mask */ 1703 TRUE); /* pcrel_offset */ 1704 1705 /* 16 bit offset for pc-relative branches. */ 1706 static reloc_howto_type elf_mips_gnu_rela16_s2 = 1707 HOWTO (R_MIPS_GNU_REL16_S2, /* type */ 1708 2, /* rightshift */ 1709 2, /* size (0 = byte, 1 = short, 2 = long) */ 1710 16, /* bitsize */ 1711 TRUE, /* pc_relative */ 1712 0, /* bitpos */ 1713 complain_overflow_signed, /* complain_on_overflow */ 1714 _bfd_mips_elf_generic_reloc, /* special_function */ 1715 "R_MIPS_GNU_REL16_S2", /* name */ 1716 FALSE, /* partial_inplace */ 1717 0, /* src_mask */ 1718 0x0000ffff, /* dst_mask */ 1719 TRUE); /* pcrel_offset */ 1720 1721 /* Originally a VxWorks extension, but now used for other systems too. */ 1723 static reloc_howto_type elf_mips_copy_howto = 1724 HOWTO (R_MIPS_COPY, /* type */ 1725 0, /* rightshift */ 1726 0, /* this one is variable size */ 1727 0, /* bitsize */ 1728 FALSE, /* pc_relative */ 1729 0, /* bitpos */ 1730 complain_overflow_bitfield, /* complain_on_overflow */ 1731 bfd_elf_generic_reloc, /* special_function */ 1732 "R_MIPS_COPY", /* name */ 1733 FALSE, /* partial_inplace */ 1734 0x0, /* src_mask */ 1735 0x0, /* dst_mask */ 1736 FALSE); /* pcrel_offset */ 1737 1738 /* Originally a VxWorks extension, but now used for other systems too. */ 1739 static reloc_howto_type elf_mips_jump_slot_howto = 1740 HOWTO (R_MIPS_JUMP_SLOT, /* type */ 1741 0, /* rightshift */ 1742 2, /* size (0 = byte, 1 = short, 2 = long) */ 1743 32, /* bitsize */ 1744 FALSE, /* pc_relative */ 1745 0, /* bitpos */ 1746 complain_overflow_bitfield, /* complain_on_overflow */ 1747 bfd_elf_generic_reloc, /* special_function */ 1748 "R_MIPS_JUMP_SLOT", /* name */ 1749 FALSE, /* partial_inplace */ 1750 0x0, /* src_mask */ 1751 0x0, /* dst_mask */ 1752 FALSE); /* pcrel_offset */ 1753 1754 /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a 1756 dangerous relocation. */ 1757 1758 static bfd_boolean 1759 mips_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp) 1760 { 1761 unsigned int count; 1762 asymbol **sym; 1763 unsigned int i; 1764 1765 /* If we've already figured out what GP will be, just return it. */ 1766 *pgp = _bfd_get_gp_value (output_bfd); 1767 if (*pgp) 1768 return TRUE; 1769 1770 count = bfd_get_symcount (output_bfd); 1771 sym = bfd_get_outsymbols (output_bfd); 1772 1773 /* The linker script will have created a symbol named `_gp' with the 1774 appropriate value. */ 1775 if (sym == NULL) 1776 i = count; 1777 else 1778 { 1779 for (i = 0; i < count; i++, sym++) 1780 { 1781 register const char *name; 1782 1783 name = bfd_asymbol_name (*sym); 1784 if (*name == '_' && strcmp (name, "_gp") == 0) 1785 { 1786 *pgp = bfd_asymbol_value (*sym); 1787 _bfd_set_gp_value (output_bfd, *pgp); 1788 break; 1789 } 1790 } 1791 } 1792 1793 if (i >= count) 1794 { 1795 /* Only get the error once. */ 1796 *pgp = 4; 1797 _bfd_set_gp_value (output_bfd, *pgp); 1798 return FALSE; 1799 } 1800 1801 return TRUE; 1802 } 1803 1804 /* We have to figure out the gp value, so that we can adjust the 1805 symbol value correctly. We look up the symbol _gp in the output 1806 BFD. If we can't find it, we're stuck. We cache it in the ELF 1807 target data. We don't need to adjust the symbol value for an 1808 external symbol if we are producing relocatable output. */ 1809 1810 static bfd_reloc_status_type 1811 mips_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable, 1812 char **error_message, bfd_vma *pgp) 1813 { 1814 if (bfd_is_und_section (symbol->section) 1815 && ! relocatable) 1816 { 1817 *pgp = 0; 1818 return bfd_reloc_undefined; 1819 } 1820 1821 *pgp = _bfd_get_gp_value (output_bfd); 1822 if (*pgp == 0 1823 && (! relocatable 1824 || (symbol->flags & BSF_SECTION_SYM) != 0)) 1825 { 1826 if (relocatable) 1827 { 1828 /* Make up a value. */ 1829 *pgp = symbol->section->output_section->vma /*+ 0x4000*/; 1830 _bfd_set_gp_value (output_bfd, *pgp); 1831 } 1832 else if (!mips_elf_assign_gp (output_bfd, pgp)) 1833 { 1834 *error_message = 1835 (char *) _("GP relative relocation when _gp not defined"); 1836 return bfd_reloc_dangerous; 1837 } 1838 } 1839 1840 return bfd_reloc_ok; 1841 } 1842 1843 /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must 1844 become the offset from the gp register. */ 1845 1846 static bfd_reloc_status_type 1847 mips_elf_gprel16_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, 1848 asymbol *symbol, void *data ATTRIBUTE_UNUSED, 1849 asection *input_section, bfd *output_bfd, 1850 char **error_message ATTRIBUTE_UNUSED) 1851 { 1852 bfd_boolean relocatable; 1853 bfd_reloc_status_type ret; 1854 bfd_vma gp; 1855 1856 if (output_bfd != NULL) 1857 relocatable = TRUE; 1858 else 1859 { 1860 relocatable = FALSE; 1861 output_bfd = symbol->section->output_section->owner; 1862 } 1863 1864 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message, 1865 &gp); 1866 if (ret != bfd_reloc_ok) 1867 return ret; 1868 1869 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, 1870 input_section, relocatable, 1871 data, gp); 1872 } 1873 1874 /* Do a R_MIPS_LITERAL relocation. */ 1875 1876 static bfd_reloc_status_type 1877 mips_elf_literal_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 1878 void *data, asection *input_section, bfd *output_bfd, 1879 char **error_message) 1880 { 1881 bfd_boolean relocatable; 1882 bfd_reloc_status_type ret; 1883 bfd_vma gp; 1884 1885 /* R_MIPS_LITERAL relocations are defined for local symbols only. */ 1886 if (output_bfd != NULL 1887 && (symbol->flags & BSF_SECTION_SYM) == 0 1888 && (symbol->flags & BSF_LOCAL) != 0) 1889 { 1890 *error_message = (char *) 1891 _("literal relocation occurs for an external symbol"); 1892 return bfd_reloc_outofrange; 1893 } 1894 1895 /* FIXME: The entries in the .lit8 and .lit4 sections should be merged. */ 1896 if (output_bfd != NULL) 1897 relocatable = TRUE; 1898 else 1899 { 1900 relocatable = FALSE; 1901 output_bfd = symbol->section->output_section->owner; 1902 } 1903 1904 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message, 1905 &gp); 1906 if (ret != bfd_reloc_ok) 1907 return ret; 1908 1909 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, 1910 input_section, relocatable, 1911 data, gp); 1912 } 1913 1914 /* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must 1915 become the offset from the gp register. */ 1916 1917 static bfd_reloc_status_type 1918 mips_elf_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 1919 void *data, asection *input_section, bfd *output_bfd, 1920 char **error_message) 1921 { 1922 bfd_boolean relocatable; 1923 bfd_reloc_status_type ret; 1924 bfd_vma gp; 1925 1926 /* R_MIPS_GPREL32 relocations are defined for local symbols only. */ 1927 if (output_bfd != NULL 1928 && (symbol->flags & BSF_SECTION_SYM) == 0 1929 && (symbol->flags & BSF_LOCAL) != 0) 1930 { 1931 *error_message = (char *) 1932 _("32bits gp relative relocation occurs for an external symbol"); 1933 return bfd_reloc_outofrange; 1934 } 1935 1936 if (output_bfd != NULL) 1937 { 1938 relocatable = TRUE; 1939 gp = _bfd_get_gp_value (output_bfd); 1940 } 1941 else 1942 { 1943 relocatable = FALSE; 1944 output_bfd = symbol->section->output_section->owner; 1945 1946 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, 1947 error_message, &gp); 1948 if (ret != bfd_reloc_ok) 1949 return ret; 1950 } 1951 1952 return gprel32_with_gp (abfd, symbol, reloc_entry, input_section, 1953 relocatable, data, gp); 1954 } 1955 1956 static bfd_reloc_status_type 1957 gprel32_with_gp (bfd *abfd, asymbol *symbol, arelent *reloc_entry, 1958 asection *input_section, bfd_boolean relocatable, 1959 void *data, bfd_vma gp) 1960 { 1961 bfd_vma relocation; 1962 unsigned long val; 1963 1964 if (bfd_is_com_section (symbol->section)) 1965 relocation = 0; 1966 else 1967 relocation = symbol->value; 1968 1969 relocation += symbol->section->output_section->vma; 1970 relocation += symbol->section->output_offset; 1971 1972 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) 1973 return bfd_reloc_outofrange; 1974 1975 if (reloc_entry->howto->src_mask == 0) 1976 val = 0; 1977 else 1978 val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 1979 1980 /* Set val to the offset into the section or symbol. */ 1981 val += reloc_entry->addend; 1982 1983 /* Adjust val for the final section location and GP value. If we 1984 are producing relocatable output, we don't want to do this for 1985 an external symbol. */ 1986 if (! relocatable 1987 || (symbol->flags & BSF_SECTION_SYM) != 0) 1988 val += relocation - gp; 1989 1990 bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address); 1991 1992 if (relocatable) 1993 reloc_entry->address += input_section->output_offset; 1994 1995 return bfd_reloc_ok; 1996 } 1997 1998 /* Do a R_MIPS_SHIFT6 relocation. The MSB of the shift is stored at bit 2, 1999 the rest is at bits 6-10. The bitpos already got right by the howto. */ 2000 2001 static bfd_reloc_status_type 2002 mips_elf_shift6_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 2003 void *data, asection *input_section, bfd *output_bfd, 2004 char **error_message) 2005 { 2006 if (reloc_entry->howto->partial_inplace) 2007 { 2008 reloc_entry->addend = ((reloc_entry->addend & 0x00007c0) 2009 | (reloc_entry->addend & 0x00000800) >> 9); 2010 } 2011 2012 return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, 2013 input_section, output_bfd, 2014 error_message); 2015 } 2016 2017 /* Handle a mips16 GP relative reloc. */ 2019 2020 static bfd_reloc_status_type 2021 mips16_gprel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, 2022 void *data, asection *input_section, bfd *output_bfd, 2023 char **error_message) 2024 { 2025 bfd_boolean relocatable; 2026 bfd_reloc_status_type ret; 2027 bfd_byte *location; 2028 bfd_vma gp; 2029 2030 /* If we're relocating, and this is an external symbol, we don't want 2031 to change anything. */ 2032 if (output_bfd != NULL 2033 && (symbol->flags & BSF_SECTION_SYM) == 0 2034 && (symbol->flags & BSF_LOCAL) != 0) 2035 { 2036 reloc_entry->address += input_section->output_offset; 2037 return bfd_reloc_ok; 2038 } 2039 2040 if (output_bfd != NULL) 2041 relocatable = TRUE; 2042 else 2043 { 2044 relocatable = FALSE; 2045 output_bfd = symbol->section->output_section->owner; 2046 } 2047 2048 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message, 2049 &gp); 2050 if (ret != bfd_reloc_ok) 2051 return ret; 2052 2053 location = (bfd_byte *) data + reloc_entry->address; 2054 _bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE, 2055 location); 2056 ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, 2057 input_section, relocatable, 2058 data, gp); 2059 _bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, !relocatable, 2060 location); 2061 2062 return ret; 2063 } 2064 2065 /* A mapping from BFD reloc types to MIPS ELF reloc types. */ 2067 2068 struct elf_reloc_map { 2069 bfd_reloc_code_real_type bfd_val; 2070 enum elf_mips_reloc_type elf_val; 2071 }; 2072 2073 static const struct elf_reloc_map mips_reloc_map[] = 2074 { 2075 { BFD_RELOC_NONE, R_MIPS_NONE }, 2076 { BFD_RELOC_16, R_MIPS_16 }, 2077 { BFD_RELOC_32, R_MIPS_32 }, 2078 /* There is no BFD reloc for R_MIPS_REL32. */ 2079 { BFD_RELOC_CTOR, R_MIPS_32 }, 2080 { BFD_RELOC_64, R_MIPS_64 }, 2081 { BFD_RELOC_16_PCREL_S2, R_MIPS_PC16 }, 2082 { BFD_RELOC_HI16_S, R_MIPS_HI16 }, 2083 { BFD_RELOC_LO16, R_MIPS_LO16 }, 2084 { BFD_RELOC_GPREL16, R_MIPS_GPREL16 }, 2085 { BFD_RELOC_GPREL32, R_MIPS_GPREL32 }, 2086 { BFD_RELOC_MIPS_JMP, R_MIPS_26 }, 2087 { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL }, 2088 { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 }, 2089 { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 }, 2090 { BFD_RELOC_MIPS_SHIFT5, R_MIPS_SHIFT5 }, 2091 { BFD_RELOC_MIPS_SHIFT6, R_MIPS_SHIFT6 }, 2092 { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP }, 2093 { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE }, 2094 { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST }, 2095 { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 }, 2096 { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 }, 2097 { BFD_RELOC_MIPS_SUB, R_MIPS_SUB }, 2098 { BFD_RELOC_MIPS_INSERT_A, R_MIPS_INSERT_A }, 2099 { BFD_RELOC_MIPS_INSERT_B, R_MIPS_INSERT_B }, 2100 { BFD_RELOC_MIPS_DELETE, R_MIPS_DELETE }, 2101 { BFD_RELOC_MIPS_HIGHEST, R_MIPS_HIGHEST }, 2102 { BFD_RELOC_MIPS_HIGHER, R_MIPS_HIGHER }, 2103 { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 }, 2104 { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 }, 2105 { BFD_RELOC_MIPS_SCN_DISP, R_MIPS_SCN_DISP }, 2106 { BFD_RELOC_MIPS_REL16, R_MIPS_REL16 }, 2107 /* Use of R_MIPS_ADD_IMMEDIATE and R_MIPS_PJUMP is deprecated. */ 2108 { BFD_RELOC_MIPS_RELGOT, R_MIPS_RELGOT }, 2109 { BFD_RELOC_MIPS_JALR, R_MIPS_JALR }, 2110 { BFD_RELOC_MIPS_TLS_DTPMOD32, R_MIPS_TLS_DTPMOD32 }, 2111 { BFD_RELOC_MIPS_TLS_DTPREL32, R_MIPS_TLS_DTPREL32 }, 2112 { BFD_RELOC_MIPS_TLS_DTPMOD64, R_MIPS_TLS_DTPMOD64 }, 2113 { BFD_RELOC_MIPS_TLS_DTPREL64, R_MIPS_TLS_DTPREL64 }, 2114 { BFD_RELOC_MIPS_TLS_GD, R_MIPS_TLS_GD }, 2115 { BFD_RELOC_MIPS_TLS_LDM, R_MIPS_TLS_LDM }, 2116 { BFD_RELOC_MIPS_TLS_DTPREL_HI16, R_MIPS_TLS_DTPREL_HI16 }, 2117 { BFD_RELOC_MIPS_TLS_DTPREL_LO16, R_MIPS_TLS_DTPREL_LO16 }, 2118 { BFD_RELOC_MIPS_TLS_GOTTPREL, R_MIPS_TLS_GOTTPREL }, 2119 { BFD_RELOC_MIPS_TLS_TPREL32, R_MIPS_TLS_TPREL32 }, 2120 { BFD_RELOC_MIPS_TLS_TPREL64, R_MIPS_TLS_TPREL64 }, 2121 { BFD_RELOC_MIPS_TLS_TPREL_HI16, R_MIPS_TLS_TPREL_HI16 }, 2122 { BFD_RELOC_MIPS_TLS_TPREL_LO16, R_MIPS_TLS_TPREL_LO16 } 2123 }; 2124 2125 static const struct elf_reloc_map mips16_reloc_map[] = 2126 { 2127 { BFD_RELOC_MIPS16_JMP, R_MIPS16_26 - R_MIPS16_min }, 2128 { BFD_RELOC_MIPS16_GPREL, R_MIPS16_GPREL - R_MIPS16_min }, 2129 { BFD_RELOC_MIPS16_GOT16, R_MIPS16_GOT16 - R_MIPS16_min }, 2130 { BFD_RELOC_MIPS16_CALL16, R_MIPS16_CALL16 - R_MIPS16_min }, 2131 { BFD_RELOC_MIPS16_HI16_S, R_MIPS16_HI16 - R_MIPS16_min }, 2132 { BFD_RELOC_MIPS16_LO16, R_MIPS16_LO16 - R_MIPS16_min }, 2133 }; 2134 2135 /* Given a BFD reloc type, return a howto structure. */ 2136 2137 static reloc_howto_type * 2138 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, 2139 bfd_reloc_code_real_type code) 2140 { 2141 unsigned int i; 2142 /* FIXME: We default to RELA here instead of choosing the right 2143 relocation variant. */ 2144 reloc_howto_type *howto_table = elf_mips_howto_table_rela; 2145 reloc_howto_type *howto16_table = elf_mips16_howto_table_rela; 2146 2147 for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); 2148 i++) 2149 { 2150 if (mips_reloc_map[i].bfd_val == code) 2151 return &howto_table[(int) mips_reloc_map[i].elf_val]; 2152 } 2153 2154 for (i = 0; i < sizeof (mips16_reloc_map) / sizeof (struct elf_reloc_map); 2155 i++) 2156 { 2157 if (mips16_reloc_map[i].bfd_val == code) 2158 return &howto16_table[(int) mips16_reloc_map[i].elf_val]; 2159 } 2160 2161 switch (code) 2162 { 2163 case BFD_RELOC_VTABLE_INHERIT: 2164 return &elf_mips_gnu_vtinherit_howto; 2165 case BFD_RELOC_VTABLE_ENTRY: 2166 return &elf_mips_gnu_vtentry_howto; 2167 case BFD_RELOC_MIPS_COPY: 2168 return &elf_mips_copy_howto; 2169 case BFD_RELOC_MIPS_JUMP_SLOT: 2170 return &elf_mips_jump_slot_howto; 2171 default: 2172 bfd_set_error (bfd_error_bad_value); 2173 return NULL; 2174 } 2175 } 2176 2177 static reloc_howto_type * 2178 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 2179 const char *r_name) 2180 { 2181 unsigned int i; 2182 2183 for (i = 0; 2184 i < (sizeof (elf_mips_howto_table_rela) 2185 / sizeof (elf_mips_howto_table_rela[0])); 2186 i++) 2187 if (elf_mips_howto_table_rela[i].name != NULL 2188 && strcasecmp (elf_mips_howto_table_rela[i].name, r_name) == 0) 2189 return &elf_mips_howto_table_rela[i]; 2190 2191 for (i = 0; 2192 i < (sizeof (elf_mips16_howto_table_rela) 2193 / sizeof (elf_mips16_howto_table_rela[0])); 2194 i++) 2195 if (elf_mips16_howto_table_rela[i].name != NULL 2196 && strcasecmp (elf_mips16_howto_table_rela[i].name, r_name) == 0) 2197 return &elf_mips16_howto_table_rela[i]; 2198 2199 if (strcasecmp (elf_mips_gnu_vtinherit_howto.name, r_name) == 0) 2200 return &elf_mips_gnu_vtinherit_howto; 2201 if (strcasecmp (elf_mips_gnu_vtentry_howto.name, r_name) == 0) 2202 return &elf_mips_gnu_vtentry_howto; 2203 if (strcasecmp (elf_mips_gnu_rel16_s2.name, r_name) == 0) 2204 return &elf_mips_gnu_rel16_s2; 2205 if (strcasecmp (elf_mips_gnu_rela16_s2.name, r_name) == 0) 2206 return &elf_mips_gnu_rela16_s2; 2207 if (strcasecmp (elf_mips_copy_howto.name, r_name) == 0) 2208 return &elf_mips_copy_howto; 2209 if (strcasecmp (elf_mips_jump_slot_howto.name, r_name) == 0) 2210 return &elf_mips_jump_slot_howto; 2211 2212 return NULL; 2213 } 2214 2215 /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */ 2216 2217 static reloc_howto_type * 2218 mips_elf_n32_rtype_to_howto (unsigned int r_type, bfd_boolean rela_p) 2219 { 2220 switch (r_type) 2221 { 2222 case R_MIPS_GNU_VTINHERIT: 2223 return &elf_mips_gnu_vtinherit_howto; 2224 case R_MIPS_GNU_VTENTRY: 2225 return &elf_mips_gnu_vtentry_howto; 2226 case R_MIPS_GNU_REL16_S2: 2227 if (rela_p) 2228 return &elf_mips_gnu_rela16_s2; 2229 else 2230 return &elf_mips_gnu_rel16_s2; 2231 case R_MIPS_COPY: 2232 return &elf_mips_copy_howto; 2233 case R_MIPS_JUMP_SLOT: 2234 return &elf_mips_jump_slot_howto; 2235 default: 2236 if (r_type >= R_MIPS16_min && r_type < R_MIPS16_max) 2237 { 2238 if (rela_p) 2239 return &elf_mips16_howto_table_rela[r_type - R_MIPS16_min]; 2240 else 2241 return &elf_mips16_howto_table_rel[r_type - R_MIPS16_min]; 2242 } 2243 BFD_ASSERT (r_type < (unsigned int) R_MIPS_max); 2244 if (rela_p) 2245 return &elf_mips_howto_table_rela[r_type]; 2246 else 2247 return &elf_mips_howto_table_rel[r_type]; 2248 break; 2249 } 2250 } 2251 2252 /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */ 2253 2254 static void 2255 mips_info_to_howto_rel (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst) 2256 { 2257 unsigned int r_type; 2258 2259 r_type = ELF32_R_TYPE (dst->r_info); 2260 cache_ptr->howto = mips_elf_n32_rtype_to_howto (r_type, FALSE); 2261 2262 /* The addend for a GPREL16 or LITERAL relocation comes from the GP 2263 value for the object file. We get the addend now, rather than 2264 when we do the relocation, because the symbol manipulations done 2265 by the linker may cause us to lose track of the input BFD. */ 2266 if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0 2267 && (gprel16_reloc_p (r_type) || r_type == (unsigned int) R_MIPS_LITERAL)) 2268 cache_ptr->addend = elf_gp (abfd); 2269 } 2270 2271 /* Given a MIPS Elf_Internal_Rela, fill in an arelent structure. */ 2272 2273 static void 2274 mips_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, 2275 arelent *cache_ptr, Elf_Internal_Rela *dst) 2276 { 2277 unsigned int r_type; 2278 2279 r_type = ELF32_R_TYPE (dst->r_info); 2280 cache_ptr->howto = mips_elf_n32_rtype_to_howto (r_type, TRUE); 2281 cache_ptr->addend = dst->r_addend; 2282 } 2283 2284 /* Determine whether a symbol is global for the purposes of splitting 2286 the symbol table into global symbols and local symbols. At least 2287 on Irix 5, this split must be between section symbols and all other 2288 symbols. On most ELF targets the split is between static symbols 2289 and externally visible symbols. */ 2290 2291 static bfd_boolean 2292 mips_elf_sym_is_global (bfd *abfd ATTRIBUTE_UNUSED, asymbol *sym) 2293 { 2294 if (SGI_COMPAT (abfd)) 2295 return (sym->flags & BSF_SECTION_SYM) == 0; 2296 else 2297 return ((sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_GNU_UNIQUE)) != 0 2298 || bfd_is_und_section (bfd_get_section (sym)) 2299 || bfd_is_com_section (bfd_get_section (sym))); 2300 } 2301 2302 /* Set the right machine number for a MIPS ELF file. */ 2304 2305 static bfd_boolean 2306 mips_elf_n32_object_p (bfd *abfd) 2307 { 2308 unsigned long mach; 2309 2310 /* Irix 5 and 6 are broken. Object file symbol tables are not always 2311 sorted correctly such that local symbols precede global symbols, 2312 and the sh_info field in the symbol table is not always right. */ 2313 if (SGI_COMPAT (abfd)) 2314 elf_bad_symtab (abfd) = TRUE; 2315 2316 mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags); 2317 bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach); 2318 2319 if (! ABI_N32_P(abfd)) 2320 return FALSE; 2321 2322 return TRUE; 2323 } 2324 2325 /* Support for core dump NOTE sections. */ 2327 static bfd_boolean 2328 elf32_mips_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 2329 { 2330 int offset; 2331 unsigned int size; 2332 2333 switch (note->descsz) 2334 { 2335 default: 2336 return FALSE; 2337 2338 case 440: /* Linux/MIPS N32 */ 2339 /* pr_cursig */ 2340 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); 2341 2342 /* pr_pid */ 2343 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24); 2344 2345 /* pr_reg */ 2346 offset = 72; 2347 size = 360; 2348 2349 break; 2350 } 2351 2352 /* Make a ".reg/999" section. */ 2353 return _bfd_elfcore_make_pseudosection (abfd, ".reg", size, 2354 note->descpos + offset); 2355 } 2356 2357 static bfd_boolean 2358 elf32_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 2359 { 2360 switch (note->descsz) 2361 { 2362 default: 2363 return FALSE; 2364 2365 case 128: /* Linux/MIPS elf_prpsinfo */ 2366 elf_tdata (abfd)->core_program 2367 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); 2368 elf_tdata (abfd)->core_command 2369 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); 2370 } 2371 2372 /* Note that for some reason, a spurious space is tacked 2373 onto the end of the args in some (at least one anyway) 2374 implementations, so strip it off if it exists. */ 2375 2376 { 2377 char *command = elf_tdata (abfd)->core_command; 2378 int n = strlen (command); 2379 2380 if (0 < n && command[n - 1] == ' ') 2381 command[n - 1] = '\0'; 2382 } 2383 2384 return TRUE; 2385 } 2386 2387 /* Depending on the target vector we generate some version of Irix 2389 executables or "normal" MIPS ELF ABI executables. */ 2390 static irix_compat_t 2391 elf_n32_mips_irix_compat (bfd *abfd) 2392 { 2393 if ((abfd->xvec == &bfd_elf32_nbigmips_vec) 2394 || (abfd->xvec == &bfd_elf32_nlittlemips_vec)) 2395 return ict_irix6; 2396 else 2397 return ict_none; 2398 } 2399 2400 /* ECOFF swapping routines. These are used when dealing with the 2402 .mdebug section, which is in the ECOFF debugging format. */ 2403 static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = { 2404 /* Symbol table magic number. */ 2405 magicSym, 2406 /* Alignment of debugging information. E.g., 4. */ 2407 4, 2408 /* Sizes of external symbolic information. */ 2409 sizeof (struct hdr_ext), 2410 sizeof (struct dnr_ext), 2411 sizeof (struct pdr_ext), 2412 sizeof (struct sym_ext), 2413 sizeof (struct opt_ext), 2414 sizeof (struct fdr_ext), 2415 sizeof (struct rfd_ext), 2416 sizeof (struct ext_ext), 2417 /* Functions to swap in external symbolic data. */ 2418 ecoff_swap_hdr_in, 2419 ecoff_swap_dnr_in, 2420 ecoff_swap_pdr_in, 2421 ecoff_swap_sym_in, 2422 ecoff_swap_opt_in, 2423 ecoff_swap_fdr_in, 2424 ecoff_swap_rfd_in, 2425 ecoff_swap_ext_in, 2426 _bfd_ecoff_swap_tir_in, 2427 _bfd_ecoff_swap_rndx_in, 2428 /* Functions to swap out external symbolic data. */ 2429 ecoff_swap_hdr_out, 2430 ecoff_swap_dnr_out, 2431 ecoff_swap_pdr_out, 2432 ecoff_swap_sym_out, 2433 ecoff_swap_opt_out, 2434 ecoff_swap_fdr_out, 2435 ecoff_swap_rfd_out, 2436 ecoff_swap_ext_out, 2437 _bfd_ecoff_swap_tir_out, 2438 _bfd_ecoff_swap_rndx_out, 2439 /* Function to read in symbolic data. */ 2440 _bfd_mips_elf_read_ecoff_info 2441 }; 2442 2443 #define ELF_ARCH bfd_arch_mips 2445 #define ELF_TARGET_ID MIPS_ELF_DATA 2446 #define ELF_MACHINE_CODE EM_MIPS 2447 2448 #define elf_backend_collect TRUE 2449 #define elf_backend_type_change_ok TRUE 2450 #define elf_backend_can_gc_sections TRUE 2451 #define elf_info_to_howto mips_info_to_howto_rela 2452 #define elf_info_to_howto_rel mips_info_to_howto_rel 2453 #define elf_backend_sym_is_global mips_elf_sym_is_global 2454 #define elf_backend_object_p mips_elf_n32_object_p 2455 #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing 2456 #define elf_backend_section_processing _bfd_mips_elf_section_processing 2457 #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr 2458 #define elf_backend_fake_sections _bfd_mips_elf_fake_sections 2459 #define elf_backend_section_from_bfd_section \ 2460 _bfd_mips_elf_section_from_bfd_section 2461 #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook 2462 #define elf_backend_link_output_symbol_hook \ 2463 _bfd_mips_elf_link_output_symbol_hook 2464 #define elf_backend_create_dynamic_sections \ 2465 _bfd_mips_elf_create_dynamic_sections 2466 #define elf_backend_check_relocs _bfd_mips_elf_check_relocs 2467 #define elf_backend_merge_symbol_attribute \ 2468 _bfd_mips_elf_merge_symbol_attribute 2469 #define elf_backend_get_target_dtag _bfd_mips_elf_get_target_dtag 2470 #define elf_backend_adjust_dynamic_symbol \ 2471 _bfd_mips_elf_adjust_dynamic_symbol 2472 #define elf_backend_always_size_sections \ 2473 _bfd_mips_elf_always_size_sections 2474 #define elf_backend_size_dynamic_sections \ 2475 _bfd_mips_elf_size_dynamic_sections 2476 #define elf_backend_init_index_section _bfd_elf_init_1_index_section 2477 #define elf_backend_relocate_section _bfd_mips_elf_relocate_section 2478 #define elf_backend_finish_dynamic_symbol \ 2479 _bfd_mips_elf_finish_dynamic_symbol 2480 #define elf_backend_finish_dynamic_sections \ 2481 _bfd_mips_elf_finish_dynamic_sections 2482 #define elf_backend_final_write_processing \ 2483 _bfd_mips_elf_final_write_processing 2484 #define elf_backend_additional_program_headers \ 2485 _bfd_mips_elf_additional_program_headers 2486 #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map 2487 #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook 2488 #define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook 2489 #define elf_backend_copy_indirect_symbol \ 2490 _bfd_mips_elf_copy_indirect_symbol 2491 #define elf_backend_grok_prstatus elf32_mips_grok_prstatus 2492 #define elf_backend_grok_psinfo elf32_mips_grok_psinfo 2493 #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap 2494 2495 #define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO) 2496 2497 /* MIPS n32 ELF can use a mixture of REL and RELA, but some Relocations 2498 work better/work only in RELA, so we default to this. */ 2499 #define elf_backend_may_use_rel_p 1 2500 #define elf_backend_may_use_rela_p 1 2501 #define elf_backend_default_use_rela_p 1 2502 #define elf_backend_rela_plts_and_copies_p 0 2503 #define elf_backend_sign_extend_vma TRUE 2504 #define elf_backend_plt_readonly 1 2505 #define elf_backend_plt_sym_val _bfd_mips_elf_plt_sym_val 2506 2507 #define elf_backend_discard_info _bfd_mips_elf_discard_info 2508 #define elf_backend_ignore_discarded_relocs \ 2509 _bfd_mips_elf_ignore_discarded_relocs 2510 #define elf_backend_write_section _bfd_mips_elf_write_section 2511 #define elf_backend_mips_irix_compat elf_n32_mips_irix_compat 2512 #define elf_backend_mips_rtype_to_howto mips_elf_n32_rtype_to_howto 2513 #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line 2514 #define bfd_elf32_find_inliner_info _bfd_mips_elf_find_inliner_info 2515 #define bfd_elf32_new_section_hook _bfd_mips_elf_new_section_hook 2516 #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents 2517 #define bfd_elf32_bfd_get_relocated_section_contents \ 2518 _bfd_elf_mips_get_relocated_section_contents 2519 #define bfd_elf32_bfd_link_hash_table_create \ 2520 _bfd_mips_elf_link_hash_table_create 2521 #define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link 2522 #define bfd_elf32_bfd_merge_private_bfd_data \ 2523 _bfd_mips_elf_merge_private_bfd_data 2524 #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags 2525 #define bfd_elf32_bfd_print_private_bfd_data \ 2526 _bfd_mips_elf_print_private_bfd_data 2527 #define bfd_elf32_bfd_relax_section _bfd_mips_relax_section 2528 2529 /* Support for SGI-ish mips targets using n32 ABI. */ 2530 2531 #define TARGET_LITTLE_SYM bfd_elf32_nlittlemips_vec 2532 #define TARGET_LITTLE_NAME "elf32-nlittlemips" 2533 #define TARGET_BIG_SYM bfd_elf32_nbigmips_vec 2534 #define TARGET_BIG_NAME "elf32-nbigmips" 2535 2536 #define ELF_MAXPAGESIZE 0x10000 2537 #define ELF_COMMONPAGESIZE 0x1000 2538 2539 #include "elf32-target.h" 2540 2541 /* Support for traditional mips targets using n32 ABI. */ 2542 #undef TARGET_LITTLE_SYM 2543 #undef TARGET_LITTLE_NAME 2544 #undef TARGET_BIG_SYM 2545 #undef TARGET_BIG_NAME 2546 2547 #undef ELF_MAXPAGESIZE 2548 #undef ELF_COMMONPAGESIZE 2549 2550 #define TARGET_LITTLE_SYM bfd_elf32_ntradlittlemips_vec 2551 #define TARGET_LITTLE_NAME "elf32-ntradlittlemips" 2552 #define TARGET_BIG_SYM bfd_elf32_ntradbigmips_vec 2553 #define TARGET_BIG_NAME "elf32-ntradbigmips" 2554 2555 #define ELF_MAXPAGESIZE 0x10000 2556 #define ELF_COMMONPAGESIZE 0x1000 2557 #define elf32_bed elf32_tradbed 2558 2559 /* Include the target file again for this target. */ 2560 #include "elf32-target.h" 2561 2562 2563 /* FreeBSD support. */ 2564 2565 #undef TARGET_LITTLE_SYM 2566 #undef TARGET_LITTLE_NAME 2567 #undef TARGET_BIG_SYM 2568 #undef TARGET_BIG_NAME 2569 2570 #define TARGET_LITTLE_SYM bfd_elf32_ntradlittlemips_freebsd_vec 2571 #define TARGET_LITTLE_NAME "elf32-ntradlittlemips-freebsd" 2572 #define TARGET_BIG_SYM bfd_elf32_ntradbigmips_freebsd_vec 2573 #define TARGET_BIG_NAME "elf32-ntradbigmips-freebsd" 2574 2575 #undef ELF_OSABI 2576 #define ELF_OSABI ELFOSABI_FREEBSD 2577 2578 /* The kernel recognizes executables as valid only if they carry a 2579 "FreeBSD" label in the ELF header. So we put this label on all 2580 executables and (for simplicity) also all other object files. */ 2581 2582 static void 2583 elf_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info) 2584 { 2585 _bfd_elf_set_osabi (abfd, info); 2586 } 2587 2588 #undef elf_backend_post_process_headers 2589 #define elf_backend_post_process_headers elf_fbsd_post_process_headers 2590 #undef elf32_bed 2591 #define elf32_bed elf32_fbsd_tradbed 2592 2593 #include "elf32-target.h" 2594
Indexes created Sun May 03 00:22:47 UTC 2026