| 1 | /* 32-bit ELF support for ARM new abi option. |
| 2 | Copyright 1999, 2000, 2001 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of BFD, the Binary File Descriptor library. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 19 | |
| 20 | #include "elf/arm.h" |
| 21 | #include "bfd.h" |
| 22 | #include "sysdep.h" |
| 23 | #include "libbfd.h" |
| 24 | #include "elf-bfd.h" |
| 25 | |
| 26 | #ifndef NUM_ELEM |
| 27 | #define NUM_ELEM(a) (sizeof (a) / (sizeof (a)[0])) |
| 28 | #endif |
| 29 | |
| 30 | #define USE_REL |
| 31 | |
| 32 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec |
| 33 | #define TARGET_LITTLE_NAME "elf32-littlearm" |
| 34 | #define TARGET_BIG_SYM bfd_elf32_bigarm_vec |
| 35 | #define TARGET_BIG_NAME "elf32-bigarm" |
| 36 | |
| 37 | #define elf_info_to_howto 0 |
| 38 | #define elf_info_to_howto_rel elf32_arm_info_to_howto |
| 39 | |
| 40 | #define ARM_ELF_ABI_VERSION 0 |
| 41 | #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM |
| 42 | |
| 43 | static reloc_howto_type * elf32_arm_reloc_type_lookup |
| 44 | PARAMS ((bfd * abfd, bfd_reloc_code_real_type code)); |
| 45 | |
| 46 | /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g. |
| 47 | R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO |
| 48 | in that slot. */ |
| 49 | |
| 50 | static reloc_howto_type elf32_arm_howto_table[] = |
| 51 | { |
| 52 | /* No relocation */ |
| 53 | HOWTO (R_ARM_NONE, /* type */ |
| 54 | 0, /* rightshift */ |
| 55 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 56 | 0, /* bitsize */ |
| 57 | false, /* pc_relative */ |
| 58 | 0, /* bitpos */ |
| 59 | complain_overflow_dont,/* complain_on_overflow */ |
| 60 | bfd_elf_generic_reloc, /* special_function */ |
| 61 | "R_ARM_NONE", /* name */ |
| 62 | false, /* partial_inplace */ |
| 63 | 0, /* src_mask */ |
| 64 | 0, /* dst_mask */ |
| 65 | false), /* pcrel_offset */ |
| 66 | |
| 67 | HOWTO (R_ARM_PC24, /* type */ |
| 68 | 2, /* rightshift */ |
| 69 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 70 | 24, /* bitsize */ |
| 71 | true, /* pc_relative */ |
| 72 | 0, /* bitpos */ |
| 73 | complain_overflow_signed,/* complain_on_overflow */ |
| 74 | bfd_elf_generic_reloc, /* special_function */ |
| 75 | "R_ARM_PC24", /* name */ |
| 76 | false, /* partial_inplace */ |
| 77 | 0x00ffffff, /* src_mask */ |
| 78 | 0x00ffffff, /* dst_mask */ |
| 79 | true), /* pcrel_offset */ |
| 80 | |
| 81 | /* 32 bit absolute */ |
| 82 | HOWTO (R_ARM_ABS32, /* type */ |
| 83 | 0, /* rightshift */ |
| 84 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 85 | 32, /* bitsize */ |
| 86 | false, /* pc_relative */ |
| 87 | 0, /* bitpos */ |
| 88 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 89 | bfd_elf_generic_reloc, /* special_function */ |
| 90 | "R_ARM_ABS32", /* name */ |
| 91 | false, /* partial_inplace */ |
| 92 | 0xffffffff, /* src_mask */ |
| 93 | 0xffffffff, /* dst_mask */ |
| 94 | false), /* pcrel_offset */ |
| 95 | |
| 96 | /* standard 32bit pc-relative reloc */ |
| 97 | HOWTO (R_ARM_REL32, /* type */ |
| 98 | 0, /* rightshift */ |
| 99 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 100 | 32, /* bitsize */ |
| 101 | true, /* pc_relative */ |
| 102 | 0, /* bitpos */ |
| 103 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 104 | bfd_elf_generic_reloc, /* special_function */ |
| 105 | "R_ARM_REL32", /* name */ |
| 106 | false, /* partial_inplace */ |
| 107 | 0xffffffff, /* src_mask */ |
| 108 | 0xffffffff, /* dst_mask */ |
| 109 | true), /* pcrel_offset */ |
| 110 | |
| 111 | /* 8 bit absolute */ |
| 112 | HOWTO (R_ARM_PC13, /* type */ |
| 113 | 0, /* rightshift */ |
| 114 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 115 | 8, /* bitsize */ |
| 116 | false, /* pc_relative */ |
| 117 | 0, /* bitpos */ |
| 118 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 119 | bfd_elf_generic_reloc, /* special_function */ |
| 120 | "R_ARM_PC13", /* name */ |
| 121 | false, /* partial_inplace */ |
| 122 | 0x000000ff, /* src_mask */ |
| 123 | 0x000000ff, /* dst_mask */ |
| 124 | false), /* pcrel_offset */ |
| 125 | |
| 126 | /* 16 bit absolute */ |
| 127 | HOWTO (R_ARM_ABS16, /* type */ |
| 128 | 0, /* rightshift */ |
| 129 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 130 | 16, /* bitsize */ |
| 131 | false, /* pc_relative */ |
| 132 | 0, /* bitpos */ |
| 133 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 134 | bfd_elf_generic_reloc, /* special_function */ |
| 135 | "R_ARM_ABS16", /* name */ |
| 136 | false, /* partial_inplace */ |
| 137 | 0, /* src_mask */ |
| 138 | 0, /* dst_mask */ |
| 139 | false), /* pcrel_offset */ |
| 140 | |
| 141 | /* 12 bit absolute */ |
| 142 | HOWTO (R_ARM_ABS12, /* type */ |
| 143 | 0, /* rightshift */ |
| 144 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 145 | 12, /* bitsize */ |
| 146 | false, /* pc_relative */ |
| 147 | 0, /* bitpos */ |
| 148 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 149 | bfd_elf_generic_reloc, /* special_function */ |
| 150 | "R_ARM_ABS12", /* name */ |
| 151 | false, /* partial_inplace */ |
| 152 | 0x000008ff, /* src_mask */ |
| 153 | 0x000008ff, /* dst_mask */ |
| 154 | false), /* pcrel_offset */ |
| 155 | |
| 156 | HOWTO (R_ARM_THM_ABS5, /* type */ |
| 157 | 6, /* rightshift */ |
| 158 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 159 | 5, /* bitsize */ |
| 160 | false, /* pc_relative */ |
| 161 | 0, /* bitpos */ |
| 162 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 163 | bfd_elf_generic_reloc, /* special_function */ |
| 164 | "R_ARM_THM_ABS5", /* name */ |
| 165 | false, /* partial_inplace */ |
| 166 | 0x000007e0, /* src_mask */ |
| 167 | 0x000007e0, /* dst_mask */ |
| 168 | false), /* pcrel_offset */ |
| 169 | |
| 170 | /* 8 bit absolute */ |
| 171 | HOWTO (R_ARM_ABS8, /* type */ |
| 172 | 0, /* rightshift */ |
| 173 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 174 | 8, /* bitsize */ |
| 175 | false, /* pc_relative */ |
| 176 | 0, /* bitpos */ |
| 177 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 178 | bfd_elf_generic_reloc, /* special_function */ |
| 179 | "R_ARM_ABS8", /* name */ |
| 180 | false, /* partial_inplace */ |
| 181 | 0x000000ff, /* src_mask */ |
| 182 | 0x000000ff, /* dst_mask */ |
| 183 | false), /* pcrel_offset */ |
| 184 | |
| 185 | HOWTO (R_ARM_SBREL32, /* type */ |
| 186 | 0, /* rightshift */ |
| 187 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 188 | 0, /* bitsize */ |
| 189 | false, /* pc_relative */ |
| 190 | 0, /* bitpos */ |
| 191 | complain_overflow_dont,/* complain_on_overflow */ |
| 192 | bfd_elf_generic_reloc, /* special_function */ |
| 193 | "R_ARM_SBREL32", /* name */ |
| 194 | false, /* partial_inplace */ |
| 195 | 0, /* src_mask */ |
| 196 | 0, /* dst_mask */ |
| 197 | false), /* pcrel_offset */ |
| 198 | |
| 199 | HOWTO (R_ARM_THM_PC22, /* type */ |
| 200 | 1, /* rightshift */ |
| 201 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 202 | 23, /* bitsize */ |
| 203 | true, /* pc_relative */ |
| 204 | 0, /* bitpos */ |
| 205 | complain_overflow_signed,/* complain_on_overflow */ |
| 206 | bfd_elf_generic_reloc, /* special_function */ |
| 207 | "R_ARM_THM_PC22", /* name */ |
| 208 | false, /* partial_inplace */ |
| 209 | 0x07ff07ff, /* src_mask */ |
| 210 | 0x07ff07ff, /* dst_mask */ |
| 211 | true), /* pcrel_offset */ |
| 212 | |
| 213 | HOWTO (R_ARM_THM_PC8, /* type */ |
| 214 | 1, /* rightshift */ |
| 215 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 216 | 8, /* bitsize */ |
| 217 | true, /* pc_relative */ |
| 218 | 0, /* bitpos */ |
| 219 | complain_overflow_signed,/* complain_on_overflow */ |
| 220 | bfd_elf_generic_reloc, /* special_function */ |
| 221 | "R_ARM_THM_PC8", /* name */ |
| 222 | false, /* partial_inplace */ |
| 223 | 0x000000ff, /* src_mask */ |
| 224 | 0x000000ff, /* dst_mask */ |
| 225 | true), /* pcrel_offset */ |
| 226 | |
| 227 | HOWTO (R_ARM_AMP_VCALL9, /* type */ |
| 228 | 1, /* rightshift */ |
| 229 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 230 | 8, /* bitsize */ |
| 231 | true, /* pc_relative */ |
| 232 | 0, /* bitpos */ |
| 233 | complain_overflow_signed,/* complain_on_overflow */ |
| 234 | bfd_elf_generic_reloc, /* special_function */ |
| 235 | "R_ARM_AMP_VCALL9", /* name */ |
| 236 | false, /* partial_inplace */ |
| 237 | 0x000000ff, /* src_mask */ |
| 238 | 0x000000ff, /* dst_mask */ |
| 239 | true), /* pcrel_offset */ |
| 240 | |
| 241 | HOWTO (R_ARM_SWI24, /* type */ |
| 242 | 0, /* rightshift */ |
| 243 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 244 | 0, /* bitsize */ |
| 245 | false, /* pc_relative */ |
| 246 | 0, /* bitpos */ |
| 247 | complain_overflow_signed,/* complain_on_overflow */ |
| 248 | bfd_elf_generic_reloc, /* special_function */ |
| 249 | "R_ARM_SWI24", /* name */ |
| 250 | false, /* partial_inplace */ |
| 251 | 0x00000000, /* src_mask */ |
| 252 | 0x00000000, /* dst_mask */ |
| 253 | false), /* pcrel_offset */ |
| 254 | |
| 255 | HOWTO (R_ARM_THM_SWI8, /* type */ |
| 256 | 0, /* rightshift */ |
| 257 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 258 | 0, /* bitsize */ |
| 259 | false, /* pc_relative */ |
| 260 | 0, /* bitpos */ |
| 261 | complain_overflow_signed,/* complain_on_overflow */ |
| 262 | bfd_elf_generic_reloc, /* special_function */ |
| 263 | "R_ARM_SWI8", /* name */ |
| 264 | false, /* partial_inplace */ |
| 265 | 0x00000000, /* src_mask */ |
| 266 | 0x00000000, /* dst_mask */ |
| 267 | false), /* pcrel_offset */ |
| 268 | |
| 269 | /* BLX instruction for the ARM. */ |
| 270 | HOWTO (R_ARM_XPC25, /* type */ |
| 271 | 2, /* rightshift */ |
| 272 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 273 | 25, /* bitsize */ |
| 274 | true, /* pc_relative */ |
| 275 | 0, /* bitpos */ |
| 276 | complain_overflow_signed,/* complain_on_overflow */ |
| 277 | bfd_elf_generic_reloc, /* special_function */ |
| 278 | "R_ARM_XPC25", /* name */ |
| 279 | false, /* partial_inplace */ |
| 280 | 0x00ffffff, /* src_mask */ |
| 281 | 0x00ffffff, /* dst_mask */ |
| 282 | true), /* pcrel_offset */ |
| 283 | |
| 284 | /* BLX instruction for the Thumb. */ |
| 285 | HOWTO (R_ARM_THM_XPC22, /* type */ |
| 286 | 2, /* rightshift */ |
| 287 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 288 | 22, /* bitsize */ |
| 289 | true, /* pc_relative */ |
| 290 | 0, /* bitpos */ |
| 291 | complain_overflow_signed,/* complain_on_overflow */ |
| 292 | bfd_elf_generic_reloc, /* special_function */ |
| 293 | "R_ARM_THM_XPC22", /* name */ |
| 294 | false, /* partial_inplace */ |
| 295 | 0x07ff07ff, /* src_mask */ |
| 296 | 0x07ff07ff, /* dst_mask */ |
| 297 | true), /* pcrel_offset */ |
| 298 | |
| 299 | /* These next three relocs are not defined, but we need to fill the space. */ |
| 300 | |
| 301 | HOWTO (R_ARM_NONE, /* type */ |
| 302 | 0, /* rightshift */ |
| 303 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 304 | 0, /* bitsize */ |
| 305 | false, /* pc_relative */ |
| 306 | 0, /* bitpos */ |
| 307 | complain_overflow_dont,/* complain_on_overflow */ |
| 308 | bfd_elf_generic_reloc, /* special_function */ |
| 309 | "R_ARM_unknown_17", /* name */ |
| 310 | false, /* partial_inplace */ |
| 311 | 0, /* src_mask */ |
| 312 | 0, /* dst_mask */ |
| 313 | false), /* pcrel_offset */ |
| 314 | |
| 315 | HOWTO (R_ARM_NONE, /* type */ |
| 316 | 0, /* rightshift */ |
| 317 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 318 | 0, /* bitsize */ |
| 319 | false, /* pc_relative */ |
| 320 | 0, /* bitpos */ |
| 321 | complain_overflow_dont,/* complain_on_overflow */ |
| 322 | bfd_elf_generic_reloc, /* special_function */ |
| 323 | "R_ARM_unknown_18", /* name */ |
| 324 | false, /* partial_inplace */ |
| 325 | 0, /* src_mask */ |
| 326 | 0, /* dst_mask */ |
| 327 | false), /* pcrel_offset */ |
| 328 | |
| 329 | HOWTO (R_ARM_NONE, /* type */ |
| 330 | 0, /* rightshift */ |
| 331 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 332 | 0, /* bitsize */ |
| 333 | false, /* pc_relative */ |
| 334 | 0, /* bitpos */ |
| 335 | complain_overflow_dont,/* complain_on_overflow */ |
| 336 | bfd_elf_generic_reloc, /* special_function */ |
| 337 | "R_ARM_unknown_19", /* name */ |
| 338 | false, /* partial_inplace */ |
| 339 | 0, /* src_mask */ |
| 340 | 0, /* dst_mask */ |
| 341 | false), /* pcrel_offset */ |
| 342 | |
| 343 | /* Relocs used in ARM Linux */ |
| 344 | |
| 345 | HOWTO (R_ARM_COPY, /* type */ |
| 346 | 0, /* rightshift */ |
| 347 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 348 | 32, /* bitsize */ |
| 349 | false, /* pc_relative */ |
| 350 | 0, /* bitpos */ |
| 351 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 352 | bfd_elf_generic_reloc, /* special_function */ |
| 353 | "R_ARM_COPY", /* name */ |
| 354 | true, /* partial_inplace */ |
| 355 | 0xffffffff, /* src_mask */ |
| 356 | 0xffffffff, /* dst_mask */ |
| 357 | false), /* pcrel_offset */ |
| 358 | |
| 359 | HOWTO (R_ARM_GLOB_DAT, /* type */ |
| 360 | 0, /* rightshift */ |
| 361 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 362 | 32, /* bitsize */ |
| 363 | false, /* pc_relative */ |
| 364 | 0, /* bitpos */ |
| 365 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 366 | bfd_elf_generic_reloc, /* special_function */ |
| 367 | "R_ARM_GLOB_DAT", /* name */ |
| 368 | true, /* partial_inplace */ |
| 369 | 0xffffffff, /* src_mask */ |
| 370 | 0xffffffff, /* dst_mask */ |
| 371 | false), /* pcrel_offset */ |
| 372 | |
| 373 | HOWTO (R_ARM_JUMP_SLOT, /* type */ |
| 374 | 0, /* rightshift */ |
| 375 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 376 | 32, /* bitsize */ |
| 377 | false, /* pc_relative */ |
| 378 | 0, /* bitpos */ |
| 379 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 380 | bfd_elf_generic_reloc, /* special_function */ |
| 381 | "R_ARM_JUMP_SLOT", /* name */ |
| 382 | true, /* partial_inplace */ |
| 383 | 0xffffffff, /* src_mask */ |
| 384 | 0xffffffff, /* dst_mask */ |
| 385 | false), /* pcrel_offset */ |
| 386 | |
| 387 | HOWTO (R_ARM_RELATIVE, /* type */ |
| 388 | 0, /* rightshift */ |
| 389 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 390 | 32, /* bitsize */ |
| 391 | false, /* pc_relative */ |
| 392 | 0, /* bitpos */ |
| 393 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 394 | bfd_elf_generic_reloc, /* special_function */ |
| 395 | "R_ARM_RELATIVE", /* name */ |
| 396 | true, /* partial_inplace */ |
| 397 | 0xffffffff, /* src_mask */ |
| 398 | 0xffffffff, /* dst_mask */ |
| 399 | false), /* pcrel_offset */ |
| 400 | |
| 401 | HOWTO (R_ARM_GOTOFF, /* type */ |
| 402 | 0, /* rightshift */ |
| 403 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 404 | 32, /* bitsize */ |
| 405 | false, /* pc_relative */ |
| 406 | 0, /* bitpos */ |
| 407 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 408 | bfd_elf_generic_reloc, /* special_function */ |
| 409 | "R_ARM_GOTOFF", /* name */ |
| 410 | true, /* partial_inplace */ |
| 411 | 0xffffffff, /* src_mask */ |
| 412 | 0xffffffff, /* dst_mask */ |
| 413 | false), /* pcrel_offset */ |
| 414 | |
| 415 | HOWTO (R_ARM_GOTPC, /* type */ |
| 416 | 0, /* rightshift */ |
| 417 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 418 | 32, /* bitsize */ |
| 419 | true, /* pc_relative */ |
| 420 | 0, /* bitpos */ |
| 421 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 422 | bfd_elf_generic_reloc, /* special_function */ |
| 423 | "R_ARM_GOTPC", /* name */ |
| 424 | true, /* partial_inplace */ |
| 425 | 0xffffffff, /* src_mask */ |
| 426 | 0xffffffff, /* dst_mask */ |
| 427 | true), /* pcrel_offset */ |
| 428 | |
| 429 | HOWTO (R_ARM_GOT32, /* type */ |
| 430 | 0, /* rightshift */ |
| 431 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 432 | 32, /* bitsize */ |
| 433 | false, /* pc_relative */ |
| 434 | 0, /* bitpos */ |
| 435 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 436 | bfd_elf_generic_reloc, /* special_function */ |
| 437 | "R_ARM_GOT32", /* name */ |
| 438 | true, /* partial_inplace */ |
| 439 | 0xffffffff, /* src_mask */ |
| 440 | 0xffffffff, /* dst_mask */ |
| 441 | false), /* pcrel_offset */ |
| 442 | |
| 443 | HOWTO (R_ARM_PLT32, /* type */ |
| 444 | 2, /* rightshift */ |
| 445 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 446 | 26, /* bitsize */ |
| 447 | true, /* pc_relative */ |
| 448 | 0, /* bitpos */ |
| 449 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 450 | bfd_elf_generic_reloc, /* special_function */ |
| 451 | "R_ARM_PLT32", /* name */ |
| 452 | true, /* partial_inplace */ |
| 453 | 0x00ffffff, /* src_mask */ |
| 454 | 0x00ffffff, /* dst_mask */ |
| 455 | true), /* pcrel_offset */ |
| 456 | |
| 457 | /* End of relocs used in ARM Linux */ |
| 458 | |
| 459 | HOWTO (R_ARM_RREL32, /* type */ |
| 460 | 0, /* rightshift */ |
| 461 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 462 | 0, /* bitsize */ |
| 463 | false, /* pc_relative */ |
| 464 | 0, /* bitpos */ |
| 465 | complain_overflow_dont,/* complain_on_overflow */ |
| 466 | bfd_elf_generic_reloc, /* special_function */ |
| 467 | "R_ARM_RREL32", /* name */ |
| 468 | false, /* partial_inplace */ |
| 469 | 0, /* src_mask */ |
| 470 | 0, /* dst_mask */ |
| 471 | false), /* pcrel_offset */ |
| 472 | |
| 473 | HOWTO (R_ARM_RABS32, /* type */ |
| 474 | 0, /* rightshift */ |
| 475 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 476 | 0, /* bitsize */ |
| 477 | false, /* pc_relative */ |
| 478 | 0, /* bitpos */ |
| 479 | complain_overflow_dont,/* complain_on_overflow */ |
| 480 | bfd_elf_generic_reloc, /* special_function */ |
| 481 | "R_ARM_RABS32", /* name */ |
| 482 | false, /* partial_inplace */ |
| 483 | 0, /* src_mask */ |
| 484 | 0, /* dst_mask */ |
| 485 | false), /* pcrel_offset */ |
| 486 | |
| 487 | HOWTO (R_ARM_RPC24, /* type */ |
| 488 | 0, /* rightshift */ |
| 489 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 490 | 0, /* bitsize */ |
| 491 | false, /* pc_relative */ |
| 492 | 0, /* bitpos */ |
| 493 | complain_overflow_dont,/* complain_on_overflow */ |
| 494 | bfd_elf_generic_reloc, /* special_function */ |
| 495 | "R_ARM_RPC24", /* name */ |
| 496 | false, /* partial_inplace */ |
| 497 | 0, /* src_mask */ |
| 498 | 0, /* dst_mask */ |
| 499 | false), /* pcrel_offset */ |
| 500 | |
| 501 | HOWTO (R_ARM_RBASE, /* type */ |
| 502 | 0, /* rightshift */ |
| 503 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 504 | 0, /* bitsize */ |
| 505 | false, /* pc_relative */ |
| 506 | 0, /* bitpos */ |
| 507 | complain_overflow_dont,/* complain_on_overflow */ |
| 508 | bfd_elf_generic_reloc, /* special_function */ |
| 509 | "R_ARM_RBASE", /* name */ |
| 510 | false, /* partial_inplace */ |
| 511 | 0, /* src_mask */ |
| 512 | 0, /* dst_mask */ |
| 513 | false), /* pcrel_offset */ |
| 514 | |
| 515 | }; |
| 516 | |
| 517 | /* GNU extension to record C++ vtable hierarchy */ |
| 518 | static reloc_howto_type elf32_arm_vtinherit_howto = |
| 519 | HOWTO (R_ARM_GNU_VTINHERIT, /* type */ |
| 520 | 0, /* rightshift */ |
| 521 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 522 | 0, /* bitsize */ |
| 523 | false, /* pc_relative */ |
| 524 | 0, /* bitpos */ |
| 525 | complain_overflow_dont, /* complain_on_overflow */ |
| 526 | NULL, /* special_function */ |
| 527 | "R_ARM_GNU_VTINHERIT", /* name */ |
| 528 | false, /* partial_inplace */ |
| 529 | 0, /* src_mask */ |
| 530 | 0, /* dst_mask */ |
| 531 | false); /* pcrel_offset */ |
| 532 | |
| 533 | /* GNU extension to record C++ vtable member usage */ |
| 534 | static reloc_howto_type elf32_arm_vtentry_howto = |
| 535 | HOWTO (R_ARM_GNU_VTENTRY, /* type */ |
| 536 | 0, /* rightshift */ |
| 537 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 538 | 0, /* bitsize */ |
| 539 | false, /* pc_relative */ |
| 540 | 0, /* bitpos */ |
| 541 | complain_overflow_dont, /* complain_on_overflow */ |
| 542 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
| 543 | "R_ARM_GNU_VTENTRY", /* name */ |
| 544 | false, /* partial_inplace */ |
| 545 | 0, /* src_mask */ |
| 546 | 0, /* dst_mask */ |
| 547 | false); /* pcrel_offset */ |
| 548 | |
| 549 | /* 12 bit pc relative */ |
| 550 | static reloc_howto_type elf32_arm_thm_pc11_howto = |
| 551 | HOWTO (R_ARM_THM_PC11, /* type */ |
| 552 | 1, /* rightshift */ |
| 553 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 554 | 11, /* bitsize */ |
| 555 | true, /* pc_relative */ |
| 556 | 0, /* bitpos */ |
| 557 | complain_overflow_signed, /* complain_on_overflow */ |
| 558 | bfd_elf_generic_reloc, /* special_function */ |
| 559 | "R_ARM_THM_PC11", /* name */ |
| 560 | false, /* partial_inplace */ |
| 561 | 0x000007ff, /* src_mask */ |
| 562 | 0x000007ff, /* dst_mask */ |
| 563 | true); /* pcrel_offset */ |
| 564 | |
| 565 | /* 12 bit pc relative */ |
| 566 | static reloc_howto_type elf32_arm_thm_pc9_howto = |
| 567 | HOWTO (R_ARM_THM_PC9, /* type */ |
| 568 | 1, /* rightshift */ |
| 569 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 570 | 8, /* bitsize */ |
| 571 | true, /* pc_relative */ |
| 572 | 0, /* bitpos */ |
| 573 | complain_overflow_signed, /* complain_on_overflow */ |
| 574 | bfd_elf_generic_reloc, /* special_function */ |
| 575 | "R_ARM_THM_PC9", /* name */ |
| 576 | false, /* partial_inplace */ |
| 577 | 0x000000ff, /* src_mask */ |
| 578 | 0x000000ff, /* dst_mask */ |
| 579 | true); /* pcrel_offset */ |
| 580 | |
| 581 | static void |
| 582 | elf32_arm_info_to_howto (abfd, bfd_reloc, elf_reloc) |
| 583 | bfd * abfd ATTRIBUTE_UNUSED; |
| 584 | arelent * bfd_reloc; |
| 585 | Elf32_Internal_Rel * elf_reloc; |
| 586 | { |
| 587 | unsigned int r_type; |
| 588 | |
| 589 | r_type = ELF32_R_TYPE (elf_reloc->r_info); |
| 590 | |
| 591 | switch (r_type) |
| 592 | { |
| 593 | case R_ARM_GNU_VTINHERIT: |
| 594 | bfd_reloc->howto = & elf32_arm_vtinherit_howto; |
| 595 | break; |
| 596 | |
| 597 | case R_ARM_GNU_VTENTRY: |
| 598 | bfd_reloc->howto = & elf32_arm_vtentry_howto; |
| 599 | break; |
| 600 | |
| 601 | case R_ARM_THM_PC11: |
| 602 | bfd_reloc->howto = & elf32_arm_thm_pc11_howto; |
| 603 | break; |
| 604 | |
| 605 | case R_ARM_THM_PC9: |
| 606 | bfd_reloc->howto = & elf32_arm_thm_pc9_howto; |
| 607 | break; |
| 608 | |
| 609 | default: |
| 610 | if (r_type >= NUM_ELEM (elf32_arm_howto_table)) |
| 611 | bfd_reloc->howto = NULL; |
| 612 | else |
| 613 | bfd_reloc->howto = & elf32_arm_howto_table[r_type]; |
| 614 | break; |
| 615 | } |
| 616 | } |
| 617 | |
| 618 | struct elf32_arm_reloc_map |
| 619 | { |
| 620 | bfd_reloc_code_real_type bfd_reloc_val; |
| 621 | unsigned char elf_reloc_val; |
| 622 | }; |
| 623 | |
| 624 | static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] = |
| 625 | { |
| 626 | {BFD_RELOC_NONE, R_ARM_NONE}, |
| 627 | {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24}, |
| 628 | {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25}, |
| 629 | {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22}, |
| 630 | {BFD_RELOC_32, R_ARM_ABS32}, |
| 631 | {BFD_RELOC_32_PCREL, R_ARM_REL32}, |
| 632 | {BFD_RELOC_8, R_ARM_ABS8}, |
| 633 | {BFD_RELOC_16, R_ARM_ABS16}, |
| 634 | {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12}, |
| 635 | {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5}, |
| 636 | {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_PC22}, |
| 637 | {BFD_RELOC_ARM_COPY, R_ARM_COPY}, |
| 638 | {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT}, |
| 639 | {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT}, |
| 640 | {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE}, |
| 641 | {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF}, |
| 642 | {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC}, |
| 643 | {BFD_RELOC_ARM_GOT32, R_ARM_GOT32}, |
| 644 | {BFD_RELOC_ARM_PLT32, R_ARM_PLT32} |
| 645 | }; |
| 646 | |
| 647 | static reloc_howto_type * |
| 648 | elf32_arm_reloc_type_lookup (abfd, code) |
| 649 | bfd *abfd ATTRIBUTE_UNUSED; |
| 650 | bfd_reloc_code_real_type code; |
| 651 | { |
| 652 | unsigned int i; |
| 653 | |
| 654 | switch (code) |
| 655 | { |
| 656 | case BFD_RELOC_VTABLE_INHERIT: |
| 657 | return & elf32_arm_vtinherit_howto; |
| 658 | |
| 659 | case BFD_RELOC_VTABLE_ENTRY: |
| 660 | return & elf32_arm_vtentry_howto; |
| 661 | |
| 662 | case BFD_RELOC_THUMB_PCREL_BRANCH12: |
| 663 | return & elf32_arm_thm_pc11_howto; |
| 664 | |
| 665 | case BFD_RELOC_THUMB_PCREL_BRANCH9: |
| 666 | return & elf32_arm_thm_pc9_howto; |
| 667 | |
| 668 | default: |
| 669 | for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++) |
| 670 | if (elf32_arm_reloc_map[i].bfd_reloc_val == code) |
| 671 | return & elf32_arm_howto_table[elf32_arm_reloc_map[i].elf_reloc_val]; |
| 672 | |
| 673 | return NULL; |
| 674 | } |
| 675 | } |
| 676 | |
| 677 | #include "elf32-arm.h" |