| 1 | /* 32-bit ELF support for ARM |
| 2 | Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
| 3 | Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of BFD, the Binary File Descriptor library. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 20 | MA 02110-1301, USA. */ |
| 21 | |
| 22 | #include "sysdep.h" |
| 23 | #include "bfd.h" |
| 24 | #include "libiberty.h" |
| 25 | #include "libbfd.h" |
| 26 | #include "elf-bfd.h" |
| 27 | #include "elf-vxworks.h" |
| 28 | #include "elf/arm.h" |
| 29 | |
| 30 | #ifndef NUM_ELEM |
| 31 | #define NUM_ELEM(a) (sizeof (a) / (sizeof (a)[0])) |
| 32 | #endif |
| 33 | |
| 34 | /* Return the relocation section associated with NAME. HTAB is the |
| 35 | bfd's elf32_arm_link_hash_entry. */ |
| 36 | #define RELOC_SECTION(HTAB, NAME) \ |
| 37 | ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME) |
| 38 | |
| 39 | /* Return size of a relocation entry. HTAB is the bfd's |
| 40 | elf32_arm_link_hash_entry. */ |
| 41 | #define RELOC_SIZE(HTAB) \ |
| 42 | ((HTAB)->use_rel \ |
| 43 | ? sizeof (Elf32_External_Rel) \ |
| 44 | : sizeof (Elf32_External_Rela)) |
| 45 | |
| 46 | /* Return function to swap relocations in. HTAB is the bfd's |
| 47 | elf32_arm_link_hash_entry. */ |
| 48 | #define SWAP_RELOC_IN(HTAB) \ |
| 49 | ((HTAB)->use_rel \ |
| 50 | ? bfd_elf32_swap_reloc_in \ |
| 51 | : bfd_elf32_swap_reloca_in) |
| 52 | |
| 53 | /* Return function to swap relocations out. HTAB is the bfd's |
| 54 | elf32_arm_link_hash_entry. */ |
| 55 | #define SWAP_RELOC_OUT(HTAB) \ |
| 56 | ((HTAB)->use_rel \ |
| 57 | ? bfd_elf32_swap_reloc_out \ |
| 58 | : bfd_elf32_swap_reloca_out) |
| 59 | |
| 60 | #define elf_info_to_howto 0 |
| 61 | #define elf_info_to_howto_rel elf32_arm_info_to_howto |
| 62 | |
| 63 | #define ARM_ELF_ABI_VERSION 0 |
| 64 | #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM |
| 65 | |
| 66 | static struct elf_backend_data elf32_arm_vxworks_bed; |
| 67 | |
| 68 | /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g. |
| 69 | R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO |
| 70 | in that slot. */ |
| 71 | |
| 72 | static reloc_howto_type elf32_arm_howto_table_1[] = |
| 73 | { |
| 74 | /* No relocation */ |
| 75 | HOWTO (R_ARM_NONE, /* type */ |
| 76 | 0, /* rightshift */ |
| 77 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 78 | 0, /* bitsize */ |
| 79 | FALSE, /* pc_relative */ |
| 80 | 0, /* bitpos */ |
| 81 | complain_overflow_dont,/* complain_on_overflow */ |
| 82 | bfd_elf_generic_reloc, /* special_function */ |
| 83 | "R_ARM_NONE", /* name */ |
| 84 | FALSE, /* partial_inplace */ |
| 85 | 0, /* src_mask */ |
| 86 | 0, /* dst_mask */ |
| 87 | FALSE), /* pcrel_offset */ |
| 88 | |
| 89 | HOWTO (R_ARM_PC24, /* type */ |
| 90 | 2, /* rightshift */ |
| 91 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 92 | 24, /* bitsize */ |
| 93 | TRUE, /* pc_relative */ |
| 94 | 0, /* bitpos */ |
| 95 | complain_overflow_signed,/* complain_on_overflow */ |
| 96 | bfd_elf_generic_reloc, /* special_function */ |
| 97 | "R_ARM_PC24", /* name */ |
| 98 | FALSE, /* partial_inplace */ |
| 99 | 0x00ffffff, /* src_mask */ |
| 100 | 0x00ffffff, /* dst_mask */ |
| 101 | TRUE), /* pcrel_offset */ |
| 102 | |
| 103 | /* 32 bit absolute */ |
| 104 | HOWTO (R_ARM_ABS32, /* type */ |
| 105 | 0, /* rightshift */ |
| 106 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 107 | 32, /* bitsize */ |
| 108 | FALSE, /* pc_relative */ |
| 109 | 0, /* bitpos */ |
| 110 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 111 | bfd_elf_generic_reloc, /* special_function */ |
| 112 | "R_ARM_ABS32", /* name */ |
| 113 | FALSE, /* partial_inplace */ |
| 114 | 0xffffffff, /* src_mask */ |
| 115 | 0xffffffff, /* dst_mask */ |
| 116 | FALSE), /* pcrel_offset */ |
| 117 | |
| 118 | /* standard 32bit pc-relative reloc */ |
| 119 | HOWTO (R_ARM_REL32, /* type */ |
| 120 | 0, /* rightshift */ |
| 121 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 122 | 32, /* bitsize */ |
| 123 | TRUE, /* pc_relative */ |
| 124 | 0, /* bitpos */ |
| 125 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 126 | bfd_elf_generic_reloc, /* special_function */ |
| 127 | "R_ARM_REL32", /* name */ |
| 128 | FALSE, /* partial_inplace */ |
| 129 | 0xffffffff, /* src_mask */ |
| 130 | 0xffffffff, /* dst_mask */ |
| 131 | TRUE), /* pcrel_offset */ |
| 132 | |
| 133 | /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */ |
| 134 | HOWTO (R_ARM_LDR_PC_G0, /* type */ |
| 135 | 0, /* rightshift */ |
| 136 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 137 | 32, /* bitsize */ |
| 138 | TRUE, /* pc_relative */ |
| 139 | 0, /* bitpos */ |
| 140 | complain_overflow_dont,/* complain_on_overflow */ |
| 141 | bfd_elf_generic_reloc, /* special_function */ |
| 142 | "R_ARM_LDR_PC_G0", /* name */ |
| 143 | FALSE, /* partial_inplace */ |
| 144 | 0xffffffff, /* src_mask */ |
| 145 | 0xffffffff, /* dst_mask */ |
| 146 | TRUE), /* pcrel_offset */ |
| 147 | |
| 148 | /* 16 bit absolute */ |
| 149 | HOWTO (R_ARM_ABS16, /* type */ |
| 150 | 0, /* rightshift */ |
| 151 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 152 | 16, /* bitsize */ |
| 153 | FALSE, /* pc_relative */ |
| 154 | 0, /* bitpos */ |
| 155 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 156 | bfd_elf_generic_reloc, /* special_function */ |
| 157 | "R_ARM_ABS16", /* name */ |
| 158 | FALSE, /* partial_inplace */ |
| 159 | 0x0000ffff, /* src_mask */ |
| 160 | 0x0000ffff, /* dst_mask */ |
| 161 | FALSE), /* pcrel_offset */ |
| 162 | |
| 163 | /* 12 bit absolute */ |
| 164 | HOWTO (R_ARM_ABS12, /* type */ |
| 165 | 0, /* rightshift */ |
| 166 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 167 | 12, /* bitsize */ |
| 168 | FALSE, /* pc_relative */ |
| 169 | 0, /* bitpos */ |
| 170 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 171 | bfd_elf_generic_reloc, /* special_function */ |
| 172 | "R_ARM_ABS12", /* name */ |
| 173 | FALSE, /* partial_inplace */ |
| 174 | 0x00000fff, /* src_mask */ |
| 175 | 0x00000fff, /* dst_mask */ |
| 176 | FALSE), /* pcrel_offset */ |
| 177 | |
| 178 | HOWTO (R_ARM_THM_ABS5, /* type */ |
| 179 | 6, /* rightshift */ |
| 180 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 181 | 5, /* bitsize */ |
| 182 | FALSE, /* pc_relative */ |
| 183 | 0, /* bitpos */ |
| 184 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 185 | bfd_elf_generic_reloc, /* special_function */ |
| 186 | "R_ARM_THM_ABS5", /* name */ |
| 187 | FALSE, /* partial_inplace */ |
| 188 | 0x000007e0, /* src_mask */ |
| 189 | 0x000007e0, /* dst_mask */ |
| 190 | FALSE), /* pcrel_offset */ |
| 191 | |
| 192 | /* 8 bit absolute */ |
| 193 | HOWTO (R_ARM_ABS8, /* type */ |
| 194 | 0, /* rightshift */ |
| 195 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 196 | 8, /* bitsize */ |
| 197 | FALSE, /* pc_relative */ |
| 198 | 0, /* bitpos */ |
| 199 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 200 | bfd_elf_generic_reloc, /* special_function */ |
| 201 | "R_ARM_ABS8", /* name */ |
| 202 | FALSE, /* partial_inplace */ |
| 203 | 0x000000ff, /* src_mask */ |
| 204 | 0x000000ff, /* dst_mask */ |
| 205 | FALSE), /* pcrel_offset */ |
| 206 | |
| 207 | HOWTO (R_ARM_SBREL32, /* type */ |
| 208 | 0, /* rightshift */ |
| 209 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 210 | 32, /* bitsize */ |
| 211 | FALSE, /* pc_relative */ |
| 212 | 0, /* bitpos */ |
| 213 | complain_overflow_dont,/* complain_on_overflow */ |
| 214 | bfd_elf_generic_reloc, /* special_function */ |
| 215 | "R_ARM_SBREL32", /* name */ |
| 216 | FALSE, /* partial_inplace */ |
| 217 | 0xffffffff, /* src_mask */ |
| 218 | 0xffffffff, /* dst_mask */ |
| 219 | FALSE), /* pcrel_offset */ |
| 220 | |
| 221 | HOWTO (R_ARM_THM_CALL, /* type */ |
| 222 | 1, /* rightshift */ |
| 223 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 224 | 25, /* bitsize */ |
| 225 | TRUE, /* pc_relative */ |
| 226 | 0, /* bitpos */ |
| 227 | complain_overflow_signed,/* complain_on_overflow */ |
| 228 | bfd_elf_generic_reloc, /* special_function */ |
| 229 | "R_ARM_THM_CALL", /* name */ |
| 230 | FALSE, /* partial_inplace */ |
| 231 | 0x07ff07ff, /* src_mask */ |
| 232 | 0x07ff07ff, /* dst_mask */ |
| 233 | TRUE), /* pcrel_offset */ |
| 234 | |
| 235 | HOWTO (R_ARM_THM_PC8, /* type */ |
| 236 | 1, /* rightshift */ |
| 237 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 238 | 8, /* bitsize */ |
| 239 | TRUE, /* pc_relative */ |
| 240 | 0, /* bitpos */ |
| 241 | complain_overflow_signed,/* complain_on_overflow */ |
| 242 | bfd_elf_generic_reloc, /* special_function */ |
| 243 | "R_ARM_THM_PC8", /* name */ |
| 244 | FALSE, /* partial_inplace */ |
| 245 | 0x000000ff, /* src_mask */ |
| 246 | 0x000000ff, /* dst_mask */ |
| 247 | TRUE), /* pcrel_offset */ |
| 248 | |
| 249 | HOWTO (R_ARM_BREL_ADJ, /* type */ |
| 250 | 1, /* rightshift */ |
| 251 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 252 | 32, /* bitsize */ |
| 253 | FALSE, /* pc_relative */ |
| 254 | 0, /* bitpos */ |
| 255 | complain_overflow_signed,/* complain_on_overflow */ |
| 256 | bfd_elf_generic_reloc, /* special_function */ |
| 257 | "R_ARM_BREL_ADJ", /* name */ |
| 258 | FALSE, /* partial_inplace */ |
| 259 | 0xffffffff, /* src_mask */ |
| 260 | 0xffffffff, /* dst_mask */ |
| 261 | FALSE), /* pcrel_offset */ |
| 262 | |
| 263 | HOWTO (R_ARM_SWI24, /* type */ |
| 264 | 0, /* rightshift */ |
| 265 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 266 | 0, /* bitsize */ |
| 267 | FALSE, /* pc_relative */ |
| 268 | 0, /* bitpos */ |
| 269 | complain_overflow_signed,/* complain_on_overflow */ |
| 270 | bfd_elf_generic_reloc, /* special_function */ |
| 271 | "R_ARM_SWI24", /* name */ |
| 272 | FALSE, /* partial_inplace */ |
| 273 | 0x00000000, /* src_mask */ |
| 274 | 0x00000000, /* dst_mask */ |
| 275 | FALSE), /* pcrel_offset */ |
| 276 | |
| 277 | HOWTO (R_ARM_THM_SWI8, /* type */ |
| 278 | 0, /* rightshift */ |
| 279 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 280 | 0, /* bitsize */ |
| 281 | FALSE, /* pc_relative */ |
| 282 | 0, /* bitpos */ |
| 283 | complain_overflow_signed,/* complain_on_overflow */ |
| 284 | bfd_elf_generic_reloc, /* special_function */ |
| 285 | "R_ARM_SWI8", /* name */ |
| 286 | FALSE, /* partial_inplace */ |
| 287 | 0x00000000, /* src_mask */ |
| 288 | 0x00000000, /* dst_mask */ |
| 289 | FALSE), /* pcrel_offset */ |
| 290 | |
| 291 | /* BLX instruction for the ARM. */ |
| 292 | HOWTO (R_ARM_XPC25, /* type */ |
| 293 | 2, /* rightshift */ |
| 294 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 295 | 25, /* bitsize */ |
| 296 | TRUE, /* pc_relative */ |
| 297 | 0, /* bitpos */ |
| 298 | complain_overflow_signed,/* complain_on_overflow */ |
| 299 | bfd_elf_generic_reloc, /* special_function */ |
| 300 | "R_ARM_XPC25", /* name */ |
| 301 | FALSE, /* partial_inplace */ |
| 302 | 0x00ffffff, /* src_mask */ |
| 303 | 0x00ffffff, /* dst_mask */ |
| 304 | TRUE), /* pcrel_offset */ |
| 305 | |
| 306 | /* BLX instruction for the Thumb. */ |
| 307 | HOWTO (R_ARM_THM_XPC22, /* type */ |
| 308 | 2, /* rightshift */ |
| 309 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 310 | 22, /* bitsize */ |
| 311 | TRUE, /* pc_relative */ |
| 312 | 0, /* bitpos */ |
| 313 | complain_overflow_signed,/* complain_on_overflow */ |
| 314 | bfd_elf_generic_reloc, /* special_function */ |
| 315 | "R_ARM_THM_XPC22", /* name */ |
| 316 | FALSE, /* partial_inplace */ |
| 317 | 0x07ff07ff, /* src_mask */ |
| 318 | 0x07ff07ff, /* dst_mask */ |
| 319 | TRUE), /* pcrel_offset */ |
| 320 | |
| 321 | /* Dynamic TLS relocations. */ |
| 322 | |
| 323 | HOWTO (R_ARM_TLS_DTPMOD32, /* type */ |
| 324 | 0, /* rightshift */ |
| 325 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 326 | 32, /* bitsize */ |
| 327 | FALSE, /* pc_relative */ |
| 328 | 0, /* bitpos */ |
| 329 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 330 | bfd_elf_generic_reloc, /* special_function */ |
| 331 | "R_ARM_TLS_DTPMOD32", /* name */ |
| 332 | TRUE, /* partial_inplace */ |
| 333 | 0xffffffff, /* src_mask */ |
| 334 | 0xffffffff, /* dst_mask */ |
| 335 | FALSE), /* pcrel_offset */ |
| 336 | |
| 337 | HOWTO (R_ARM_TLS_DTPOFF32, /* type */ |
| 338 | 0, /* rightshift */ |
| 339 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 340 | 32, /* bitsize */ |
| 341 | FALSE, /* pc_relative */ |
| 342 | 0, /* bitpos */ |
| 343 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 344 | bfd_elf_generic_reloc, /* special_function */ |
| 345 | "R_ARM_TLS_DTPOFF32", /* name */ |
| 346 | TRUE, /* partial_inplace */ |
| 347 | 0xffffffff, /* src_mask */ |
| 348 | 0xffffffff, /* dst_mask */ |
| 349 | FALSE), /* pcrel_offset */ |
| 350 | |
| 351 | HOWTO (R_ARM_TLS_TPOFF32, /* type */ |
| 352 | 0, /* rightshift */ |
| 353 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 354 | 32, /* bitsize */ |
| 355 | FALSE, /* pc_relative */ |
| 356 | 0, /* bitpos */ |
| 357 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 358 | bfd_elf_generic_reloc, /* special_function */ |
| 359 | "R_ARM_TLS_TPOFF32", /* name */ |
| 360 | TRUE, /* partial_inplace */ |
| 361 | 0xffffffff, /* src_mask */ |
| 362 | 0xffffffff, /* dst_mask */ |
| 363 | FALSE), /* pcrel_offset */ |
| 364 | |
| 365 | /* Relocs used in ARM Linux */ |
| 366 | |
| 367 | HOWTO (R_ARM_COPY, /* type */ |
| 368 | 0, /* rightshift */ |
| 369 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 370 | 32, /* bitsize */ |
| 371 | FALSE, /* pc_relative */ |
| 372 | 0, /* bitpos */ |
| 373 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 374 | bfd_elf_generic_reloc, /* special_function */ |
| 375 | "R_ARM_COPY", /* name */ |
| 376 | TRUE, /* partial_inplace */ |
| 377 | 0xffffffff, /* src_mask */ |
| 378 | 0xffffffff, /* dst_mask */ |
| 379 | FALSE), /* pcrel_offset */ |
| 380 | |
| 381 | HOWTO (R_ARM_GLOB_DAT, /* type */ |
| 382 | 0, /* rightshift */ |
| 383 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 384 | 32, /* bitsize */ |
| 385 | FALSE, /* pc_relative */ |
| 386 | 0, /* bitpos */ |
| 387 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 388 | bfd_elf_generic_reloc, /* special_function */ |
| 389 | "R_ARM_GLOB_DAT", /* name */ |
| 390 | TRUE, /* partial_inplace */ |
| 391 | 0xffffffff, /* src_mask */ |
| 392 | 0xffffffff, /* dst_mask */ |
| 393 | FALSE), /* pcrel_offset */ |
| 394 | |
| 395 | HOWTO (R_ARM_JUMP_SLOT, /* type */ |
| 396 | 0, /* rightshift */ |
| 397 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 398 | 32, /* bitsize */ |
| 399 | FALSE, /* pc_relative */ |
| 400 | 0, /* bitpos */ |
| 401 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 402 | bfd_elf_generic_reloc, /* special_function */ |
| 403 | "R_ARM_JUMP_SLOT", /* name */ |
| 404 | TRUE, /* partial_inplace */ |
| 405 | 0xffffffff, /* src_mask */ |
| 406 | 0xffffffff, /* dst_mask */ |
| 407 | FALSE), /* pcrel_offset */ |
| 408 | |
| 409 | HOWTO (R_ARM_RELATIVE, /* type */ |
| 410 | 0, /* rightshift */ |
| 411 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 412 | 32, /* bitsize */ |
| 413 | FALSE, /* pc_relative */ |
| 414 | 0, /* bitpos */ |
| 415 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 416 | bfd_elf_generic_reloc, /* special_function */ |
| 417 | "R_ARM_RELATIVE", /* name */ |
| 418 | TRUE, /* partial_inplace */ |
| 419 | 0xffffffff, /* src_mask */ |
| 420 | 0xffffffff, /* dst_mask */ |
| 421 | FALSE), /* pcrel_offset */ |
| 422 | |
| 423 | HOWTO (R_ARM_GOTOFF32, /* type */ |
| 424 | 0, /* rightshift */ |
| 425 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 426 | 32, /* bitsize */ |
| 427 | FALSE, /* pc_relative */ |
| 428 | 0, /* bitpos */ |
| 429 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 430 | bfd_elf_generic_reloc, /* special_function */ |
| 431 | "R_ARM_GOTOFF32", /* name */ |
| 432 | TRUE, /* partial_inplace */ |
| 433 | 0xffffffff, /* src_mask */ |
| 434 | 0xffffffff, /* dst_mask */ |
| 435 | FALSE), /* pcrel_offset */ |
| 436 | |
| 437 | HOWTO (R_ARM_GOTPC, /* type */ |
| 438 | 0, /* rightshift */ |
| 439 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 440 | 32, /* bitsize */ |
| 441 | TRUE, /* pc_relative */ |
| 442 | 0, /* bitpos */ |
| 443 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 444 | bfd_elf_generic_reloc, /* special_function */ |
| 445 | "R_ARM_GOTPC", /* name */ |
| 446 | TRUE, /* partial_inplace */ |
| 447 | 0xffffffff, /* src_mask */ |
| 448 | 0xffffffff, /* dst_mask */ |
| 449 | TRUE), /* pcrel_offset */ |
| 450 | |
| 451 | HOWTO (R_ARM_GOT32, /* type */ |
| 452 | 0, /* rightshift */ |
| 453 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 454 | 32, /* bitsize */ |
| 455 | FALSE, /* pc_relative */ |
| 456 | 0, /* bitpos */ |
| 457 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 458 | bfd_elf_generic_reloc, /* special_function */ |
| 459 | "R_ARM_GOT32", /* name */ |
| 460 | TRUE, /* partial_inplace */ |
| 461 | 0xffffffff, /* src_mask */ |
| 462 | 0xffffffff, /* dst_mask */ |
| 463 | FALSE), /* pcrel_offset */ |
| 464 | |
| 465 | HOWTO (R_ARM_PLT32, /* type */ |
| 466 | 2, /* rightshift */ |
| 467 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 468 | 24, /* bitsize */ |
| 469 | TRUE, /* pc_relative */ |
| 470 | 0, /* bitpos */ |
| 471 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 472 | bfd_elf_generic_reloc, /* special_function */ |
| 473 | "R_ARM_PLT32", /* name */ |
| 474 | FALSE, /* partial_inplace */ |
| 475 | 0x00ffffff, /* src_mask */ |
| 476 | 0x00ffffff, /* dst_mask */ |
| 477 | TRUE), /* pcrel_offset */ |
| 478 | |
| 479 | HOWTO (R_ARM_CALL, /* type */ |
| 480 | 2, /* rightshift */ |
| 481 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 482 | 24, /* bitsize */ |
| 483 | TRUE, /* pc_relative */ |
| 484 | 0, /* bitpos */ |
| 485 | complain_overflow_signed,/* complain_on_overflow */ |
| 486 | bfd_elf_generic_reloc, /* special_function */ |
| 487 | "R_ARM_CALL", /* name */ |
| 488 | FALSE, /* partial_inplace */ |
| 489 | 0x00ffffff, /* src_mask */ |
| 490 | 0x00ffffff, /* dst_mask */ |
| 491 | TRUE), /* pcrel_offset */ |
| 492 | |
| 493 | HOWTO (R_ARM_JUMP24, /* type */ |
| 494 | 2, /* rightshift */ |
| 495 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 496 | 24, /* bitsize */ |
| 497 | TRUE, /* pc_relative */ |
| 498 | 0, /* bitpos */ |
| 499 | complain_overflow_signed,/* complain_on_overflow */ |
| 500 | bfd_elf_generic_reloc, /* special_function */ |
| 501 | "R_ARM_JUMP24", /* name */ |
| 502 | FALSE, /* partial_inplace */ |
| 503 | 0x00ffffff, /* src_mask */ |
| 504 | 0x00ffffff, /* dst_mask */ |
| 505 | TRUE), /* pcrel_offset */ |
| 506 | |
| 507 | HOWTO (R_ARM_THM_JUMP24, /* type */ |
| 508 | 1, /* rightshift */ |
| 509 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 510 | 24, /* bitsize */ |
| 511 | TRUE, /* pc_relative */ |
| 512 | 0, /* bitpos */ |
| 513 | complain_overflow_signed,/* complain_on_overflow */ |
| 514 | bfd_elf_generic_reloc, /* special_function */ |
| 515 | "R_ARM_THM_JUMP24", /* name */ |
| 516 | FALSE, /* partial_inplace */ |
| 517 | 0x07ff2fff, /* src_mask */ |
| 518 | 0x07ff2fff, /* dst_mask */ |
| 519 | TRUE), /* pcrel_offset */ |
| 520 | |
| 521 | HOWTO (R_ARM_BASE_ABS, /* type */ |
| 522 | 0, /* rightshift */ |
| 523 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 524 | 32, /* bitsize */ |
| 525 | FALSE, /* pc_relative */ |
| 526 | 0, /* bitpos */ |
| 527 | complain_overflow_dont,/* complain_on_overflow */ |
| 528 | bfd_elf_generic_reloc, /* special_function */ |
| 529 | "R_ARM_BASE_ABS", /* name */ |
| 530 | FALSE, /* partial_inplace */ |
| 531 | 0xffffffff, /* src_mask */ |
| 532 | 0xffffffff, /* dst_mask */ |
| 533 | FALSE), /* pcrel_offset */ |
| 534 | |
| 535 | HOWTO (R_ARM_ALU_PCREL7_0, /* type */ |
| 536 | 0, /* rightshift */ |
| 537 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 538 | 12, /* bitsize */ |
| 539 | TRUE, /* pc_relative */ |
| 540 | 0, /* bitpos */ |
| 541 | complain_overflow_dont,/* complain_on_overflow */ |
| 542 | bfd_elf_generic_reloc, /* special_function */ |
| 543 | "R_ARM_ALU_PCREL_7_0", /* name */ |
| 544 | FALSE, /* partial_inplace */ |
| 545 | 0x00000fff, /* src_mask */ |
| 546 | 0x00000fff, /* dst_mask */ |
| 547 | TRUE), /* pcrel_offset */ |
| 548 | |
| 549 | HOWTO (R_ARM_ALU_PCREL15_8, /* type */ |
| 550 | 0, /* rightshift */ |
| 551 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 552 | 12, /* bitsize */ |
| 553 | TRUE, /* pc_relative */ |
| 554 | 8, /* bitpos */ |
| 555 | complain_overflow_dont,/* complain_on_overflow */ |
| 556 | bfd_elf_generic_reloc, /* special_function */ |
| 557 | "R_ARM_ALU_PCREL_15_8",/* name */ |
| 558 | FALSE, /* partial_inplace */ |
| 559 | 0x00000fff, /* src_mask */ |
| 560 | 0x00000fff, /* dst_mask */ |
| 561 | TRUE), /* pcrel_offset */ |
| 562 | |
| 563 | HOWTO (R_ARM_ALU_PCREL23_15, /* type */ |
| 564 | 0, /* rightshift */ |
| 565 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 566 | 12, /* bitsize */ |
| 567 | TRUE, /* pc_relative */ |
| 568 | 16, /* bitpos */ |
| 569 | complain_overflow_dont,/* complain_on_overflow */ |
| 570 | bfd_elf_generic_reloc, /* special_function */ |
| 571 | "R_ARM_ALU_PCREL_23_15",/* name */ |
| 572 | FALSE, /* partial_inplace */ |
| 573 | 0x00000fff, /* src_mask */ |
| 574 | 0x00000fff, /* dst_mask */ |
| 575 | TRUE), /* pcrel_offset */ |
| 576 | |
| 577 | HOWTO (R_ARM_LDR_SBREL_11_0, /* type */ |
| 578 | 0, /* rightshift */ |
| 579 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 580 | 12, /* bitsize */ |
| 581 | FALSE, /* pc_relative */ |
| 582 | 0, /* bitpos */ |
| 583 | complain_overflow_dont,/* complain_on_overflow */ |
| 584 | bfd_elf_generic_reloc, /* special_function */ |
| 585 | "R_ARM_LDR_SBREL_11_0",/* name */ |
| 586 | FALSE, /* partial_inplace */ |
| 587 | 0x00000fff, /* src_mask */ |
| 588 | 0x00000fff, /* dst_mask */ |
| 589 | FALSE), /* pcrel_offset */ |
| 590 | |
| 591 | HOWTO (R_ARM_ALU_SBREL_19_12, /* type */ |
| 592 | 0, /* rightshift */ |
| 593 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 594 | 8, /* bitsize */ |
| 595 | FALSE, /* pc_relative */ |
| 596 | 12, /* bitpos */ |
| 597 | complain_overflow_dont,/* complain_on_overflow */ |
| 598 | bfd_elf_generic_reloc, /* special_function */ |
| 599 | "R_ARM_ALU_SBREL_19_12",/* name */ |
| 600 | FALSE, /* partial_inplace */ |
| 601 | 0x000ff000, /* src_mask */ |
| 602 | 0x000ff000, /* dst_mask */ |
| 603 | FALSE), /* pcrel_offset */ |
| 604 | |
| 605 | HOWTO (R_ARM_ALU_SBREL_27_20, /* type */ |
| 606 | 0, /* rightshift */ |
| 607 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 608 | 8, /* bitsize */ |
| 609 | FALSE, /* pc_relative */ |
| 610 | 20, /* bitpos */ |
| 611 | complain_overflow_dont,/* complain_on_overflow */ |
| 612 | bfd_elf_generic_reloc, /* special_function */ |
| 613 | "R_ARM_ALU_SBREL_27_20",/* name */ |
| 614 | FALSE, /* partial_inplace */ |
| 615 | 0x0ff00000, /* src_mask */ |
| 616 | 0x0ff00000, /* dst_mask */ |
| 617 | FALSE), /* pcrel_offset */ |
| 618 | |
| 619 | HOWTO (R_ARM_TARGET1, /* type */ |
| 620 | 0, /* rightshift */ |
| 621 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 622 | 32, /* bitsize */ |
| 623 | FALSE, /* pc_relative */ |
| 624 | 0, /* bitpos */ |
| 625 | complain_overflow_dont,/* complain_on_overflow */ |
| 626 | bfd_elf_generic_reloc, /* special_function */ |
| 627 | "R_ARM_TARGET1", /* name */ |
| 628 | FALSE, /* partial_inplace */ |
| 629 | 0xffffffff, /* src_mask */ |
| 630 | 0xffffffff, /* dst_mask */ |
| 631 | FALSE), /* pcrel_offset */ |
| 632 | |
| 633 | HOWTO (R_ARM_ROSEGREL32, /* type */ |
| 634 | 0, /* rightshift */ |
| 635 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 636 | 32, /* bitsize */ |
| 637 | FALSE, /* pc_relative */ |
| 638 | 0, /* bitpos */ |
| 639 | complain_overflow_dont,/* complain_on_overflow */ |
| 640 | bfd_elf_generic_reloc, /* special_function */ |
| 641 | "R_ARM_ROSEGREL32", /* name */ |
| 642 | FALSE, /* partial_inplace */ |
| 643 | 0xffffffff, /* src_mask */ |
| 644 | 0xffffffff, /* dst_mask */ |
| 645 | FALSE), /* pcrel_offset */ |
| 646 | |
| 647 | HOWTO (R_ARM_V4BX, /* type */ |
| 648 | 0, /* rightshift */ |
| 649 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 650 | 32, /* bitsize */ |
| 651 | FALSE, /* pc_relative */ |
| 652 | 0, /* bitpos */ |
| 653 | complain_overflow_dont,/* complain_on_overflow */ |
| 654 | bfd_elf_generic_reloc, /* special_function */ |
| 655 | "R_ARM_V4BX", /* name */ |
| 656 | FALSE, /* partial_inplace */ |
| 657 | 0xffffffff, /* src_mask */ |
| 658 | 0xffffffff, /* dst_mask */ |
| 659 | FALSE), /* pcrel_offset */ |
| 660 | |
| 661 | HOWTO (R_ARM_TARGET2, /* type */ |
| 662 | 0, /* rightshift */ |
| 663 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 664 | 32, /* bitsize */ |
| 665 | FALSE, /* pc_relative */ |
| 666 | 0, /* bitpos */ |
| 667 | complain_overflow_signed,/* complain_on_overflow */ |
| 668 | bfd_elf_generic_reloc, /* special_function */ |
| 669 | "R_ARM_TARGET2", /* name */ |
| 670 | FALSE, /* partial_inplace */ |
| 671 | 0xffffffff, /* src_mask */ |
| 672 | 0xffffffff, /* dst_mask */ |
| 673 | TRUE), /* pcrel_offset */ |
| 674 | |
| 675 | HOWTO (R_ARM_PREL31, /* type */ |
| 676 | 0, /* rightshift */ |
| 677 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 678 | 31, /* bitsize */ |
| 679 | TRUE, /* pc_relative */ |
| 680 | 0, /* bitpos */ |
| 681 | complain_overflow_signed,/* complain_on_overflow */ |
| 682 | bfd_elf_generic_reloc, /* special_function */ |
| 683 | "R_ARM_PREL31", /* name */ |
| 684 | FALSE, /* partial_inplace */ |
| 685 | 0x7fffffff, /* src_mask */ |
| 686 | 0x7fffffff, /* dst_mask */ |
| 687 | TRUE), /* pcrel_offset */ |
| 688 | |
| 689 | HOWTO (R_ARM_MOVW_ABS_NC, /* type */ |
| 690 | 0, /* rightshift */ |
| 691 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 692 | 16, /* bitsize */ |
| 693 | FALSE, /* pc_relative */ |
| 694 | 0, /* bitpos */ |
| 695 | complain_overflow_dont,/* complain_on_overflow */ |
| 696 | bfd_elf_generic_reloc, /* special_function */ |
| 697 | "R_ARM_MOVW_ABS_NC", /* name */ |
| 698 | FALSE, /* partial_inplace */ |
| 699 | 0x0000ffff, /* src_mask */ |
| 700 | 0x0000ffff, /* dst_mask */ |
| 701 | FALSE), /* pcrel_offset */ |
| 702 | |
| 703 | HOWTO (R_ARM_MOVT_ABS, /* type */ |
| 704 | 0, /* rightshift */ |
| 705 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 706 | 16, /* bitsize */ |
| 707 | FALSE, /* pc_relative */ |
| 708 | 0, /* bitpos */ |
| 709 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 710 | bfd_elf_generic_reloc, /* special_function */ |
| 711 | "R_ARM_MOVT_ABS", /* name */ |
| 712 | FALSE, /* partial_inplace */ |
| 713 | 0x0000ffff, /* src_mask */ |
| 714 | 0x0000ffff, /* dst_mask */ |
| 715 | FALSE), /* pcrel_offset */ |
| 716 | |
| 717 | HOWTO (R_ARM_MOVW_PREL_NC, /* type */ |
| 718 | 0, /* rightshift */ |
| 719 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 720 | 16, /* bitsize */ |
| 721 | TRUE, /* pc_relative */ |
| 722 | 0, /* bitpos */ |
| 723 | complain_overflow_dont,/* complain_on_overflow */ |
| 724 | bfd_elf_generic_reloc, /* special_function */ |
| 725 | "R_ARM_MOVW_PREL_NC", /* name */ |
| 726 | FALSE, /* partial_inplace */ |
| 727 | 0x0000ffff, /* src_mask */ |
| 728 | 0x0000ffff, /* dst_mask */ |
| 729 | TRUE), /* pcrel_offset */ |
| 730 | |
| 731 | HOWTO (R_ARM_MOVT_PREL, /* type */ |
| 732 | 0, /* rightshift */ |
| 733 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 734 | 16, /* bitsize */ |
| 735 | TRUE, /* pc_relative */ |
| 736 | 0, /* bitpos */ |
| 737 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 738 | bfd_elf_generic_reloc, /* special_function */ |
| 739 | "R_ARM_MOVT_PREL", /* name */ |
| 740 | FALSE, /* partial_inplace */ |
| 741 | 0x0000ffff, /* src_mask */ |
| 742 | 0x0000ffff, /* dst_mask */ |
| 743 | TRUE), /* pcrel_offset */ |
| 744 | |
| 745 | HOWTO (R_ARM_THM_MOVW_ABS_NC, /* type */ |
| 746 | 0, /* rightshift */ |
| 747 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 748 | 16, /* bitsize */ |
| 749 | FALSE, /* pc_relative */ |
| 750 | 0, /* bitpos */ |
| 751 | complain_overflow_dont,/* complain_on_overflow */ |
| 752 | bfd_elf_generic_reloc, /* special_function */ |
| 753 | "R_ARM_THM_MOVW_ABS_NC",/* name */ |
| 754 | FALSE, /* partial_inplace */ |
| 755 | 0x040f70ff, /* src_mask */ |
| 756 | 0x040f70ff, /* dst_mask */ |
| 757 | FALSE), /* pcrel_offset */ |
| 758 | |
| 759 | HOWTO (R_ARM_THM_MOVT_ABS, /* type */ |
| 760 | 0, /* rightshift */ |
| 761 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 762 | 16, /* bitsize */ |
| 763 | FALSE, /* pc_relative */ |
| 764 | 0, /* bitpos */ |
| 765 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 766 | bfd_elf_generic_reloc, /* special_function */ |
| 767 | "R_ARM_THM_MOVT_ABS", /* name */ |
| 768 | FALSE, /* partial_inplace */ |
| 769 | 0x040f70ff, /* src_mask */ |
| 770 | 0x040f70ff, /* dst_mask */ |
| 771 | FALSE), /* pcrel_offset */ |
| 772 | |
| 773 | HOWTO (R_ARM_THM_MOVW_PREL_NC,/* type */ |
| 774 | 0, /* rightshift */ |
| 775 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 776 | 16, /* bitsize */ |
| 777 | TRUE, /* pc_relative */ |
| 778 | 0, /* bitpos */ |
| 779 | complain_overflow_dont,/* complain_on_overflow */ |
| 780 | bfd_elf_generic_reloc, /* special_function */ |
| 781 | "R_ARM_THM_MOVW_PREL_NC",/* name */ |
| 782 | FALSE, /* partial_inplace */ |
| 783 | 0x040f70ff, /* src_mask */ |
| 784 | 0x040f70ff, /* dst_mask */ |
| 785 | TRUE), /* pcrel_offset */ |
| 786 | |
| 787 | HOWTO (R_ARM_THM_MOVT_PREL, /* type */ |
| 788 | 0, /* rightshift */ |
| 789 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 790 | 16, /* bitsize */ |
| 791 | TRUE, /* pc_relative */ |
| 792 | 0, /* bitpos */ |
| 793 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 794 | bfd_elf_generic_reloc, /* special_function */ |
| 795 | "R_ARM_THM_MOVT_PREL", /* name */ |
| 796 | FALSE, /* partial_inplace */ |
| 797 | 0x040f70ff, /* src_mask */ |
| 798 | 0x040f70ff, /* dst_mask */ |
| 799 | TRUE), /* pcrel_offset */ |
| 800 | |
| 801 | HOWTO (R_ARM_THM_JUMP19, /* type */ |
| 802 | 1, /* rightshift */ |
| 803 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 804 | 19, /* bitsize */ |
| 805 | TRUE, /* pc_relative */ |
| 806 | 0, /* bitpos */ |
| 807 | complain_overflow_signed,/* complain_on_overflow */ |
| 808 | bfd_elf_generic_reloc, /* special_function */ |
| 809 | "R_ARM_THM_JUMP19", /* name */ |
| 810 | FALSE, /* partial_inplace */ |
| 811 | 0x043f2fff, /* src_mask */ |
| 812 | 0x043f2fff, /* dst_mask */ |
| 813 | TRUE), /* pcrel_offset */ |
| 814 | |
| 815 | HOWTO (R_ARM_THM_JUMP6, /* type */ |
| 816 | 1, /* rightshift */ |
| 817 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 818 | 6, /* bitsize */ |
| 819 | TRUE, /* pc_relative */ |
| 820 | 0, /* bitpos */ |
| 821 | complain_overflow_unsigned,/* complain_on_overflow */ |
| 822 | bfd_elf_generic_reloc, /* special_function */ |
| 823 | "R_ARM_THM_JUMP6", /* name */ |
| 824 | FALSE, /* partial_inplace */ |
| 825 | 0x02f8, /* src_mask */ |
| 826 | 0x02f8, /* dst_mask */ |
| 827 | TRUE), /* pcrel_offset */ |
| 828 | |
| 829 | /* These are declared as 13-bit signed relocations because we can |
| 830 | address -4095 .. 4095(base) by altering ADDW to SUBW or vice |
| 831 | versa. */ |
| 832 | HOWTO (R_ARM_THM_ALU_PREL_11_0,/* type */ |
| 833 | 0, /* rightshift */ |
| 834 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 835 | 13, /* bitsize */ |
| 836 | TRUE, /* pc_relative */ |
| 837 | 0, /* bitpos */ |
| 838 | complain_overflow_dont,/* complain_on_overflow */ |
| 839 | bfd_elf_generic_reloc, /* special_function */ |
| 840 | "R_ARM_THM_ALU_PREL_11_0",/* name */ |
| 841 | FALSE, /* partial_inplace */ |
| 842 | 0xffffffff, /* src_mask */ |
| 843 | 0xffffffff, /* dst_mask */ |
| 844 | TRUE), /* pcrel_offset */ |
| 845 | |
| 846 | HOWTO (R_ARM_THM_PC12, /* type */ |
| 847 | 0, /* rightshift */ |
| 848 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 849 | 13, /* bitsize */ |
| 850 | TRUE, /* pc_relative */ |
| 851 | 0, /* bitpos */ |
| 852 | complain_overflow_dont,/* complain_on_overflow */ |
| 853 | bfd_elf_generic_reloc, /* special_function */ |
| 854 | "R_ARM_THM_PC12", /* name */ |
| 855 | FALSE, /* partial_inplace */ |
| 856 | 0xffffffff, /* src_mask */ |
| 857 | 0xffffffff, /* dst_mask */ |
| 858 | TRUE), /* pcrel_offset */ |
| 859 | |
| 860 | HOWTO (R_ARM_ABS32_NOI, /* type */ |
| 861 | 0, /* rightshift */ |
| 862 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 863 | 32, /* bitsize */ |
| 864 | FALSE, /* pc_relative */ |
| 865 | 0, /* bitpos */ |
| 866 | complain_overflow_dont,/* complain_on_overflow */ |
| 867 | bfd_elf_generic_reloc, /* special_function */ |
| 868 | "R_ARM_ABS32_NOI", /* name */ |
| 869 | FALSE, /* partial_inplace */ |
| 870 | 0xffffffff, /* src_mask */ |
| 871 | 0xffffffff, /* dst_mask */ |
| 872 | FALSE), /* pcrel_offset */ |
| 873 | |
| 874 | HOWTO (R_ARM_REL32_NOI, /* type */ |
| 875 | 0, /* rightshift */ |
| 876 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 877 | 32, /* bitsize */ |
| 878 | TRUE, /* pc_relative */ |
| 879 | 0, /* bitpos */ |
| 880 | complain_overflow_dont,/* complain_on_overflow */ |
| 881 | bfd_elf_generic_reloc, /* special_function */ |
| 882 | "R_ARM_REL32_NOI", /* name */ |
| 883 | FALSE, /* partial_inplace */ |
| 884 | 0xffffffff, /* src_mask */ |
| 885 | 0xffffffff, /* dst_mask */ |
| 886 | FALSE), /* pcrel_offset */ |
| 887 | |
| 888 | /* Group relocations. */ |
| 889 | |
| 890 | HOWTO (R_ARM_ALU_PC_G0_NC, /* type */ |
| 891 | 0, /* rightshift */ |
| 892 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 893 | 32, /* bitsize */ |
| 894 | TRUE, /* pc_relative */ |
| 895 | 0, /* bitpos */ |
| 896 | complain_overflow_dont,/* complain_on_overflow */ |
| 897 | bfd_elf_generic_reloc, /* special_function */ |
| 898 | "R_ARM_ALU_PC_G0_NC", /* name */ |
| 899 | FALSE, /* partial_inplace */ |
| 900 | 0xffffffff, /* src_mask */ |
| 901 | 0xffffffff, /* dst_mask */ |
| 902 | TRUE), /* pcrel_offset */ |
| 903 | |
| 904 | HOWTO (R_ARM_ALU_PC_G0, /* type */ |
| 905 | 0, /* rightshift */ |
| 906 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 907 | 32, /* bitsize */ |
| 908 | TRUE, /* pc_relative */ |
| 909 | 0, /* bitpos */ |
| 910 | complain_overflow_dont,/* complain_on_overflow */ |
| 911 | bfd_elf_generic_reloc, /* special_function */ |
| 912 | "R_ARM_ALU_PC_G0", /* name */ |
| 913 | FALSE, /* partial_inplace */ |
| 914 | 0xffffffff, /* src_mask */ |
| 915 | 0xffffffff, /* dst_mask */ |
| 916 | TRUE), /* pcrel_offset */ |
| 917 | |
| 918 | HOWTO (R_ARM_ALU_PC_G1_NC, /* type */ |
| 919 | 0, /* rightshift */ |
| 920 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 921 | 32, /* bitsize */ |
| 922 | TRUE, /* pc_relative */ |
| 923 | 0, /* bitpos */ |
| 924 | complain_overflow_dont,/* complain_on_overflow */ |
| 925 | bfd_elf_generic_reloc, /* special_function */ |
| 926 | "R_ARM_ALU_PC_G1_NC", /* name */ |
| 927 | FALSE, /* partial_inplace */ |
| 928 | 0xffffffff, /* src_mask */ |
| 929 | 0xffffffff, /* dst_mask */ |
| 930 | TRUE), /* pcrel_offset */ |
| 931 | |
| 932 | HOWTO (R_ARM_ALU_PC_G1, /* type */ |
| 933 | 0, /* rightshift */ |
| 934 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 935 | 32, /* bitsize */ |
| 936 | TRUE, /* pc_relative */ |
| 937 | 0, /* bitpos */ |
| 938 | complain_overflow_dont,/* complain_on_overflow */ |
| 939 | bfd_elf_generic_reloc, /* special_function */ |
| 940 | "R_ARM_ALU_PC_G1", /* name */ |
| 941 | FALSE, /* partial_inplace */ |
| 942 | 0xffffffff, /* src_mask */ |
| 943 | 0xffffffff, /* dst_mask */ |
| 944 | TRUE), /* pcrel_offset */ |
| 945 | |
| 946 | HOWTO (R_ARM_ALU_PC_G2, /* type */ |
| 947 | 0, /* rightshift */ |
| 948 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 949 | 32, /* bitsize */ |
| 950 | TRUE, /* pc_relative */ |
| 951 | 0, /* bitpos */ |
| 952 | complain_overflow_dont,/* complain_on_overflow */ |
| 953 | bfd_elf_generic_reloc, /* special_function */ |
| 954 | "R_ARM_ALU_PC_G2", /* name */ |
| 955 | FALSE, /* partial_inplace */ |
| 956 | 0xffffffff, /* src_mask */ |
| 957 | 0xffffffff, /* dst_mask */ |
| 958 | TRUE), /* pcrel_offset */ |
| 959 | |
| 960 | HOWTO (R_ARM_LDR_PC_G1, /* type */ |
| 961 | 0, /* rightshift */ |
| 962 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 963 | 32, /* bitsize */ |
| 964 | TRUE, /* pc_relative */ |
| 965 | 0, /* bitpos */ |
| 966 | complain_overflow_dont,/* complain_on_overflow */ |
| 967 | bfd_elf_generic_reloc, /* special_function */ |
| 968 | "R_ARM_LDR_PC_G1", /* name */ |
| 969 | FALSE, /* partial_inplace */ |
| 970 | 0xffffffff, /* src_mask */ |
| 971 | 0xffffffff, /* dst_mask */ |
| 972 | TRUE), /* pcrel_offset */ |
| 973 | |
| 974 | HOWTO (R_ARM_LDR_PC_G2, /* type */ |
| 975 | 0, /* rightshift */ |
| 976 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 977 | 32, /* bitsize */ |
| 978 | TRUE, /* pc_relative */ |
| 979 | 0, /* bitpos */ |
| 980 | complain_overflow_dont,/* complain_on_overflow */ |
| 981 | bfd_elf_generic_reloc, /* special_function */ |
| 982 | "R_ARM_LDR_PC_G2", /* name */ |
| 983 | FALSE, /* partial_inplace */ |
| 984 | 0xffffffff, /* src_mask */ |
| 985 | 0xffffffff, /* dst_mask */ |
| 986 | TRUE), /* pcrel_offset */ |
| 987 | |
| 988 | HOWTO (R_ARM_LDRS_PC_G0, /* type */ |
| 989 | 0, /* rightshift */ |
| 990 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 991 | 32, /* bitsize */ |
| 992 | TRUE, /* pc_relative */ |
| 993 | 0, /* bitpos */ |
| 994 | complain_overflow_dont,/* complain_on_overflow */ |
| 995 | bfd_elf_generic_reloc, /* special_function */ |
| 996 | "R_ARM_LDRS_PC_G0", /* name */ |
| 997 | FALSE, /* partial_inplace */ |
| 998 | 0xffffffff, /* src_mask */ |
| 999 | 0xffffffff, /* dst_mask */ |
| 1000 | TRUE), /* pcrel_offset */ |
| 1001 | |
| 1002 | HOWTO (R_ARM_LDRS_PC_G1, /* type */ |
| 1003 | 0, /* rightshift */ |
| 1004 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1005 | 32, /* bitsize */ |
| 1006 | TRUE, /* pc_relative */ |
| 1007 | 0, /* bitpos */ |
| 1008 | complain_overflow_dont,/* complain_on_overflow */ |
| 1009 | bfd_elf_generic_reloc, /* special_function */ |
| 1010 | "R_ARM_LDRS_PC_G1", /* name */ |
| 1011 | FALSE, /* partial_inplace */ |
| 1012 | 0xffffffff, /* src_mask */ |
| 1013 | 0xffffffff, /* dst_mask */ |
| 1014 | TRUE), /* pcrel_offset */ |
| 1015 | |
| 1016 | HOWTO (R_ARM_LDRS_PC_G2, /* type */ |
| 1017 | 0, /* rightshift */ |
| 1018 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1019 | 32, /* bitsize */ |
| 1020 | TRUE, /* pc_relative */ |
| 1021 | 0, /* bitpos */ |
| 1022 | complain_overflow_dont,/* complain_on_overflow */ |
| 1023 | bfd_elf_generic_reloc, /* special_function */ |
| 1024 | "R_ARM_LDRS_PC_G2", /* name */ |
| 1025 | FALSE, /* partial_inplace */ |
| 1026 | 0xffffffff, /* src_mask */ |
| 1027 | 0xffffffff, /* dst_mask */ |
| 1028 | TRUE), /* pcrel_offset */ |
| 1029 | |
| 1030 | HOWTO (R_ARM_LDC_PC_G0, /* type */ |
| 1031 | 0, /* rightshift */ |
| 1032 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1033 | 32, /* bitsize */ |
| 1034 | TRUE, /* pc_relative */ |
| 1035 | 0, /* bitpos */ |
| 1036 | complain_overflow_dont,/* complain_on_overflow */ |
| 1037 | bfd_elf_generic_reloc, /* special_function */ |
| 1038 | "R_ARM_LDC_PC_G0", /* name */ |
| 1039 | FALSE, /* partial_inplace */ |
| 1040 | 0xffffffff, /* src_mask */ |
| 1041 | 0xffffffff, /* dst_mask */ |
| 1042 | TRUE), /* pcrel_offset */ |
| 1043 | |
| 1044 | HOWTO (R_ARM_LDC_PC_G1, /* type */ |
| 1045 | 0, /* rightshift */ |
| 1046 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1047 | 32, /* bitsize */ |
| 1048 | TRUE, /* pc_relative */ |
| 1049 | 0, /* bitpos */ |
| 1050 | complain_overflow_dont,/* complain_on_overflow */ |
| 1051 | bfd_elf_generic_reloc, /* special_function */ |
| 1052 | "R_ARM_LDC_PC_G1", /* name */ |
| 1053 | FALSE, /* partial_inplace */ |
| 1054 | 0xffffffff, /* src_mask */ |
| 1055 | 0xffffffff, /* dst_mask */ |
| 1056 | TRUE), /* pcrel_offset */ |
| 1057 | |
| 1058 | HOWTO (R_ARM_LDC_PC_G2, /* type */ |
| 1059 | 0, /* rightshift */ |
| 1060 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1061 | 32, /* bitsize */ |
| 1062 | TRUE, /* pc_relative */ |
| 1063 | 0, /* bitpos */ |
| 1064 | complain_overflow_dont,/* complain_on_overflow */ |
| 1065 | bfd_elf_generic_reloc, /* special_function */ |
| 1066 | "R_ARM_LDC_PC_G2", /* name */ |
| 1067 | FALSE, /* partial_inplace */ |
| 1068 | 0xffffffff, /* src_mask */ |
| 1069 | 0xffffffff, /* dst_mask */ |
| 1070 | TRUE), /* pcrel_offset */ |
| 1071 | |
| 1072 | HOWTO (R_ARM_ALU_SB_G0_NC, /* type */ |
| 1073 | 0, /* rightshift */ |
| 1074 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1075 | 32, /* bitsize */ |
| 1076 | TRUE, /* pc_relative */ |
| 1077 | 0, /* bitpos */ |
| 1078 | complain_overflow_dont,/* complain_on_overflow */ |
| 1079 | bfd_elf_generic_reloc, /* special_function */ |
| 1080 | "R_ARM_ALU_SB_G0_NC", /* name */ |
| 1081 | FALSE, /* partial_inplace */ |
| 1082 | 0xffffffff, /* src_mask */ |
| 1083 | 0xffffffff, /* dst_mask */ |
| 1084 | TRUE), /* pcrel_offset */ |
| 1085 | |
| 1086 | HOWTO (R_ARM_ALU_SB_G0, /* type */ |
| 1087 | 0, /* rightshift */ |
| 1088 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1089 | 32, /* bitsize */ |
| 1090 | TRUE, /* pc_relative */ |
| 1091 | 0, /* bitpos */ |
| 1092 | complain_overflow_dont,/* complain_on_overflow */ |
| 1093 | bfd_elf_generic_reloc, /* special_function */ |
| 1094 | "R_ARM_ALU_SB_G0", /* name */ |
| 1095 | FALSE, /* partial_inplace */ |
| 1096 | 0xffffffff, /* src_mask */ |
| 1097 | 0xffffffff, /* dst_mask */ |
| 1098 | TRUE), /* pcrel_offset */ |
| 1099 | |
| 1100 | HOWTO (R_ARM_ALU_SB_G1_NC, /* type */ |
| 1101 | 0, /* rightshift */ |
| 1102 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1103 | 32, /* bitsize */ |
| 1104 | TRUE, /* pc_relative */ |
| 1105 | 0, /* bitpos */ |
| 1106 | complain_overflow_dont,/* complain_on_overflow */ |
| 1107 | bfd_elf_generic_reloc, /* special_function */ |
| 1108 | "R_ARM_ALU_SB_G1_NC", /* name */ |
| 1109 | FALSE, /* partial_inplace */ |
| 1110 | 0xffffffff, /* src_mask */ |
| 1111 | 0xffffffff, /* dst_mask */ |
| 1112 | TRUE), /* pcrel_offset */ |
| 1113 | |
| 1114 | HOWTO (R_ARM_ALU_SB_G1, /* type */ |
| 1115 | 0, /* rightshift */ |
| 1116 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1117 | 32, /* bitsize */ |
| 1118 | TRUE, /* pc_relative */ |
| 1119 | 0, /* bitpos */ |
| 1120 | complain_overflow_dont,/* complain_on_overflow */ |
| 1121 | bfd_elf_generic_reloc, /* special_function */ |
| 1122 | "R_ARM_ALU_SB_G1", /* name */ |
| 1123 | FALSE, /* partial_inplace */ |
| 1124 | 0xffffffff, /* src_mask */ |
| 1125 | 0xffffffff, /* dst_mask */ |
| 1126 | TRUE), /* pcrel_offset */ |
| 1127 | |
| 1128 | HOWTO (R_ARM_ALU_SB_G2, /* type */ |
| 1129 | 0, /* rightshift */ |
| 1130 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1131 | 32, /* bitsize */ |
| 1132 | TRUE, /* pc_relative */ |
| 1133 | 0, /* bitpos */ |
| 1134 | complain_overflow_dont,/* complain_on_overflow */ |
| 1135 | bfd_elf_generic_reloc, /* special_function */ |
| 1136 | "R_ARM_ALU_SB_G2", /* name */ |
| 1137 | FALSE, /* partial_inplace */ |
| 1138 | 0xffffffff, /* src_mask */ |
| 1139 | 0xffffffff, /* dst_mask */ |
| 1140 | TRUE), /* pcrel_offset */ |
| 1141 | |
| 1142 | HOWTO (R_ARM_LDR_SB_G0, /* type */ |
| 1143 | 0, /* rightshift */ |
| 1144 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1145 | 32, /* bitsize */ |
| 1146 | TRUE, /* pc_relative */ |
| 1147 | 0, /* bitpos */ |
| 1148 | complain_overflow_dont,/* complain_on_overflow */ |
| 1149 | bfd_elf_generic_reloc, /* special_function */ |
| 1150 | "R_ARM_LDR_SB_G0", /* name */ |
| 1151 | FALSE, /* partial_inplace */ |
| 1152 | 0xffffffff, /* src_mask */ |
| 1153 | 0xffffffff, /* dst_mask */ |
| 1154 | TRUE), /* pcrel_offset */ |
| 1155 | |
| 1156 | HOWTO (R_ARM_LDR_SB_G1, /* type */ |
| 1157 | 0, /* rightshift */ |
| 1158 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1159 | 32, /* bitsize */ |
| 1160 | TRUE, /* pc_relative */ |
| 1161 | 0, /* bitpos */ |
| 1162 | complain_overflow_dont,/* complain_on_overflow */ |
| 1163 | bfd_elf_generic_reloc, /* special_function */ |
| 1164 | "R_ARM_LDR_SB_G1", /* name */ |
| 1165 | FALSE, /* partial_inplace */ |
| 1166 | 0xffffffff, /* src_mask */ |
| 1167 | 0xffffffff, /* dst_mask */ |
| 1168 | TRUE), /* pcrel_offset */ |
| 1169 | |
| 1170 | HOWTO (R_ARM_LDR_SB_G2, /* type */ |
| 1171 | 0, /* rightshift */ |
| 1172 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1173 | 32, /* bitsize */ |
| 1174 | TRUE, /* pc_relative */ |
| 1175 | 0, /* bitpos */ |
| 1176 | complain_overflow_dont,/* complain_on_overflow */ |
| 1177 | bfd_elf_generic_reloc, /* special_function */ |
| 1178 | "R_ARM_LDR_SB_G2", /* name */ |
| 1179 | FALSE, /* partial_inplace */ |
| 1180 | 0xffffffff, /* src_mask */ |
| 1181 | 0xffffffff, /* dst_mask */ |
| 1182 | TRUE), /* pcrel_offset */ |
| 1183 | |
| 1184 | HOWTO (R_ARM_LDRS_SB_G0, /* type */ |
| 1185 | 0, /* rightshift */ |
| 1186 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1187 | 32, /* bitsize */ |
| 1188 | TRUE, /* pc_relative */ |
| 1189 | 0, /* bitpos */ |
| 1190 | complain_overflow_dont,/* complain_on_overflow */ |
| 1191 | bfd_elf_generic_reloc, /* special_function */ |
| 1192 | "R_ARM_LDRS_SB_G0", /* name */ |
| 1193 | FALSE, /* partial_inplace */ |
| 1194 | 0xffffffff, /* src_mask */ |
| 1195 | 0xffffffff, /* dst_mask */ |
| 1196 | TRUE), /* pcrel_offset */ |
| 1197 | |
| 1198 | HOWTO (R_ARM_LDRS_SB_G1, /* type */ |
| 1199 | 0, /* rightshift */ |
| 1200 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1201 | 32, /* bitsize */ |
| 1202 | TRUE, /* pc_relative */ |
| 1203 | 0, /* bitpos */ |
| 1204 | complain_overflow_dont,/* complain_on_overflow */ |
| 1205 | bfd_elf_generic_reloc, /* special_function */ |
| 1206 | "R_ARM_LDRS_SB_G1", /* name */ |
| 1207 | FALSE, /* partial_inplace */ |
| 1208 | 0xffffffff, /* src_mask */ |
| 1209 | 0xffffffff, /* dst_mask */ |
| 1210 | TRUE), /* pcrel_offset */ |
| 1211 | |
| 1212 | HOWTO (R_ARM_LDRS_SB_G2, /* type */ |
| 1213 | 0, /* rightshift */ |
| 1214 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1215 | 32, /* bitsize */ |
| 1216 | TRUE, /* pc_relative */ |
| 1217 | 0, /* bitpos */ |
| 1218 | complain_overflow_dont,/* complain_on_overflow */ |
| 1219 | bfd_elf_generic_reloc, /* special_function */ |
| 1220 | "R_ARM_LDRS_SB_G2", /* name */ |
| 1221 | FALSE, /* partial_inplace */ |
| 1222 | 0xffffffff, /* src_mask */ |
| 1223 | 0xffffffff, /* dst_mask */ |
| 1224 | TRUE), /* pcrel_offset */ |
| 1225 | |
| 1226 | HOWTO (R_ARM_LDC_SB_G0, /* type */ |
| 1227 | 0, /* rightshift */ |
| 1228 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1229 | 32, /* bitsize */ |
| 1230 | TRUE, /* pc_relative */ |
| 1231 | 0, /* bitpos */ |
| 1232 | complain_overflow_dont,/* complain_on_overflow */ |
| 1233 | bfd_elf_generic_reloc, /* special_function */ |
| 1234 | "R_ARM_LDC_SB_G0", /* name */ |
| 1235 | FALSE, /* partial_inplace */ |
| 1236 | 0xffffffff, /* src_mask */ |
| 1237 | 0xffffffff, /* dst_mask */ |
| 1238 | TRUE), /* pcrel_offset */ |
| 1239 | |
| 1240 | HOWTO (R_ARM_LDC_SB_G1, /* type */ |
| 1241 | 0, /* rightshift */ |
| 1242 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1243 | 32, /* bitsize */ |
| 1244 | TRUE, /* pc_relative */ |
| 1245 | 0, /* bitpos */ |
| 1246 | complain_overflow_dont,/* complain_on_overflow */ |
| 1247 | bfd_elf_generic_reloc, /* special_function */ |
| 1248 | "R_ARM_LDC_SB_G1", /* name */ |
| 1249 | FALSE, /* partial_inplace */ |
| 1250 | 0xffffffff, /* src_mask */ |
| 1251 | 0xffffffff, /* dst_mask */ |
| 1252 | TRUE), /* pcrel_offset */ |
| 1253 | |
| 1254 | HOWTO (R_ARM_LDC_SB_G2, /* type */ |
| 1255 | 0, /* rightshift */ |
| 1256 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1257 | 32, /* bitsize */ |
| 1258 | TRUE, /* pc_relative */ |
| 1259 | 0, /* bitpos */ |
| 1260 | complain_overflow_dont,/* complain_on_overflow */ |
| 1261 | bfd_elf_generic_reloc, /* special_function */ |
| 1262 | "R_ARM_LDC_SB_G2", /* name */ |
| 1263 | FALSE, /* partial_inplace */ |
| 1264 | 0xffffffff, /* src_mask */ |
| 1265 | 0xffffffff, /* dst_mask */ |
| 1266 | TRUE), /* pcrel_offset */ |
| 1267 | |
| 1268 | /* End of group relocations. */ |
| 1269 | |
| 1270 | HOWTO (R_ARM_MOVW_BREL_NC, /* type */ |
| 1271 | 0, /* rightshift */ |
| 1272 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1273 | 16, /* bitsize */ |
| 1274 | FALSE, /* pc_relative */ |
| 1275 | 0, /* bitpos */ |
| 1276 | complain_overflow_dont,/* complain_on_overflow */ |
| 1277 | bfd_elf_generic_reloc, /* special_function */ |
| 1278 | "R_ARM_MOVW_BREL_NC", /* name */ |
| 1279 | FALSE, /* partial_inplace */ |
| 1280 | 0x0000ffff, /* src_mask */ |
| 1281 | 0x0000ffff, /* dst_mask */ |
| 1282 | FALSE), /* pcrel_offset */ |
| 1283 | |
| 1284 | HOWTO (R_ARM_MOVT_BREL, /* type */ |
| 1285 | 0, /* rightshift */ |
| 1286 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1287 | 16, /* bitsize */ |
| 1288 | FALSE, /* pc_relative */ |
| 1289 | 0, /* bitpos */ |
| 1290 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 1291 | bfd_elf_generic_reloc, /* special_function */ |
| 1292 | "R_ARM_MOVT_BREL", /* name */ |
| 1293 | FALSE, /* partial_inplace */ |
| 1294 | 0x0000ffff, /* src_mask */ |
| 1295 | 0x0000ffff, /* dst_mask */ |
| 1296 | FALSE), /* pcrel_offset */ |
| 1297 | |
| 1298 | HOWTO (R_ARM_MOVW_BREL, /* type */ |
| 1299 | 0, /* rightshift */ |
| 1300 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1301 | 16, /* bitsize */ |
| 1302 | FALSE, /* pc_relative */ |
| 1303 | 0, /* bitpos */ |
| 1304 | complain_overflow_dont,/* complain_on_overflow */ |
| 1305 | bfd_elf_generic_reloc, /* special_function */ |
| 1306 | "R_ARM_MOVW_BREL", /* name */ |
| 1307 | FALSE, /* partial_inplace */ |
| 1308 | 0x0000ffff, /* src_mask */ |
| 1309 | 0x0000ffff, /* dst_mask */ |
| 1310 | FALSE), /* pcrel_offset */ |
| 1311 | |
| 1312 | HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */ |
| 1313 | 0, /* rightshift */ |
| 1314 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1315 | 16, /* bitsize */ |
| 1316 | FALSE, /* pc_relative */ |
| 1317 | 0, /* bitpos */ |
| 1318 | complain_overflow_dont,/* complain_on_overflow */ |
| 1319 | bfd_elf_generic_reloc, /* special_function */ |
| 1320 | "R_ARM_THM_MOVW_BREL_NC",/* name */ |
| 1321 | FALSE, /* partial_inplace */ |
| 1322 | 0x040f70ff, /* src_mask */ |
| 1323 | 0x040f70ff, /* dst_mask */ |
| 1324 | FALSE), /* pcrel_offset */ |
| 1325 | |
| 1326 | HOWTO (R_ARM_THM_MOVT_BREL, /* type */ |
| 1327 | 0, /* rightshift */ |
| 1328 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1329 | 16, /* bitsize */ |
| 1330 | FALSE, /* pc_relative */ |
| 1331 | 0, /* bitpos */ |
| 1332 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 1333 | bfd_elf_generic_reloc, /* special_function */ |
| 1334 | "R_ARM_THM_MOVT_BREL", /* name */ |
| 1335 | FALSE, /* partial_inplace */ |
| 1336 | 0x040f70ff, /* src_mask */ |
| 1337 | 0x040f70ff, /* dst_mask */ |
| 1338 | FALSE), /* pcrel_offset */ |
| 1339 | |
| 1340 | HOWTO (R_ARM_THM_MOVW_BREL, /* type */ |
| 1341 | 0, /* rightshift */ |
| 1342 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1343 | 16, /* bitsize */ |
| 1344 | FALSE, /* pc_relative */ |
| 1345 | 0, /* bitpos */ |
| 1346 | complain_overflow_dont,/* complain_on_overflow */ |
| 1347 | bfd_elf_generic_reloc, /* special_function */ |
| 1348 | "R_ARM_THM_MOVW_BREL", /* name */ |
| 1349 | FALSE, /* partial_inplace */ |
| 1350 | 0x040f70ff, /* src_mask */ |
| 1351 | 0x040f70ff, /* dst_mask */ |
| 1352 | FALSE), /* pcrel_offset */ |
| 1353 | |
| 1354 | EMPTY_HOWTO (90), /* unallocated */ |
| 1355 | EMPTY_HOWTO (91), |
| 1356 | EMPTY_HOWTO (92), |
| 1357 | EMPTY_HOWTO (93), |
| 1358 | |
| 1359 | HOWTO (R_ARM_PLT32_ABS, /* type */ |
| 1360 | 0, /* rightshift */ |
| 1361 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1362 | 32, /* bitsize */ |
| 1363 | FALSE, /* pc_relative */ |
| 1364 | 0, /* bitpos */ |
| 1365 | complain_overflow_dont,/* complain_on_overflow */ |
| 1366 | bfd_elf_generic_reloc, /* special_function */ |
| 1367 | "R_ARM_PLT32_ABS", /* name */ |
| 1368 | FALSE, /* partial_inplace */ |
| 1369 | 0xffffffff, /* src_mask */ |
| 1370 | 0xffffffff, /* dst_mask */ |
| 1371 | FALSE), /* pcrel_offset */ |
| 1372 | |
| 1373 | HOWTO (R_ARM_GOT_ABS, /* type */ |
| 1374 | 0, /* rightshift */ |
| 1375 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1376 | 32, /* bitsize */ |
| 1377 | FALSE, /* pc_relative */ |
| 1378 | 0, /* bitpos */ |
| 1379 | complain_overflow_dont,/* complain_on_overflow */ |
| 1380 | bfd_elf_generic_reloc, /* special_function */ |
| 1381 | "R_ARM_GOT_ABS", /* name */ |
| 1382 | FALSE, /* partial_inplace */ |
| 1383 | 0xffffffff, /* src_mask */ |
| 1384 | 0xffffffff, /* dst_mask */ |
| 1385 | FALSE), /* pcrel_offset */ |
| 1386 | |
| 1387 | HOWTO (R_ARM_GOT_PREL, /* type */ |
| 1388 | 0, /* rightshift */ |
| 1389 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1390 | 32, /* bitsize */ |
| 1391 | TRUE, /* pc_relative */ |
| 1392 | 0, /* bitpos */ |
| 1393 | complain_overflow_dont, /* complain_on_overflow */ |
| 1394 | bfd_elf_generic_reloc, /* special_function */ |
| 1395 | "R_ARM_GOT_PREL", /* name */ |
| 1396 | FALSE, /* partial_inplace */ |
| 1397 | 0xffffffff, /* src_mask */ |
| 1398 | 0xffffffff, /* dst_mask */ |
| 1399 | TRUE), /* pcrel_offset */ |
| 1400 | |
| 1401 | HOWTO (R_ARM_GOT_BREL12, /* type */ |
| 1402 | 0, /* rightshift */ |
| 1403 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1404 | 12, /* bitsize */ |
| 1405 | FALSE, /* pc_relative */ |
| 1406 | 0, /* bitpos */ |
| 1407 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 1408 | bfd_elf_generic_reloc, /* special_function */ |
| 1409 | "R_ARM_GOT_BREL12", /* name */ |
| 1410 | FALSE, /* partial_inplace */ |
| 1411 | 0x00000fff, /* src_mask */ |
| 1412 | 0x00000fff, /* dst_mask */ |
| 1413 | FALSE), /* pcrel_offset */ |
| 1414 | |
| 1415 | HOWTO (R_ARM_GOTOFF12, /* type */ |
| 1416 | 0, /* rightshift */ |
| 1417 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1418 | 12, /* bitsize */ |
| 1419 | FALSE, /* pc_relative */ |
| 1420 | 0, /* bitpos */ |
| 1421 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 1422 | bfd_elf_generic_reloc, /* special_function */ |
| 1423 | "R_ARM_GOTOFF12", /* name */ |
| 1424 | FALSE, /* partial_inplace */ |
| 1425 | 0x00000fff, /* src_mask */ |
| 1426 | 0x00000fff, /* dst_mask */ |
| 1427 | FALSE), /* pcrel_offset */ |
| 1428 | |
| 1429 | EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */ |
| 1430 | |
| 1431 | /* GNU extension to record C++ vtable member usage */ |
| 1432 | HOWTO (R_ARM_GNU_VTENTRY, /* type */ |
| 1433 | 0, /* rightshift */ |
| 1434 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1435 | 0, /* bitsize */ |
| 1436 | FALSE, /* pc_relative */ |
| 1437 | 0, /* bitpos */ |
| 1438 | complain_overflow_dont, /* complain_on_overflow */ |
| 1439 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
| 1440 | "R_ARM_GNU_VTENTRY", /* name */ |
| 1441 | FALSE, /* partial_inplace */ |
| 1442 | 0, /* src_mask */ |
| 1443 | 0, /* dst_mask */ |
| 1444 | FALSE), /* pcrel_offset */ |
| 1445 | |
| 1446 | /* GNU extension to record C++ vtable hierarchy */ |
| 1447 | HOWTO (R_ARM_GNU_VTINHERIT, /* type */ |
| 1448 | 0, /* rightshift */ |
| 1449 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1450 | 0, /* bitsize */ |
| 1451 | FALSE, /* pc_relative */ |
| 1452 | 0, /* bitpos */ |
| 1453 | complain_overflow_dont, /* complain_on_overflow */ |
| 1454 | NULL, /* special_function */ |
| 1455 | "R_ARM_GNU_VTINHERIT", /* name */ |
| 1456 | FALSE, /* partial_inplace */ |
| 1457 | 0, /* src_mask */ |
| 1458 | 0, /* dst_mask */ |
| 1459 | FALSE), /* pcrel_offset */ |
| 1460 | |
| 1461 | HOWTO (R_ARM_THM_JUMP11, /* type */ |
| 1462 | 1, /* rightshift */ |
| 1463 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1464 | 11, /* bitsize */ |
| 1465 | TRUE, /* pc_relative */ |
| 1466 | 0, /* bitpos */ |
| 1467 | complain_overflow_signed, /* complain_on_overflow */ |
| 1468 | bfd_elf_generic_reloc, /* special_function */ |
| 1469 | "R_ARM_THM_JUMP11", /* name */ |
| 1470 | FALSE, /* partial_inplace */ |
| 1471 | 0x000007ff, /* src_mask */ |
| 1472 | 0x000007ff, /* dst_mask */ |
| 1473 | TRUE), /* pcrel_offset */ |
| 1474 | |
| 1475 | HOWTO (R_ARM_THM_JUMP8, /* type */ |
| 1476 | 1, /* rightshift */ |
| 1477 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1478 | 8, /* bitsize */ |
| 1479 | TRUE, /* pc_relative */ |
| 1480 | 0, /* bitpos */ |
| 1481 | complain_overflow_signed, /* complain_on_overflow */ |
| 1482 | bfd_elf_generic_reloc, /* special_function */ |
| 1483 | "R_ARM_THM_JUMP8", /* name */ |
| 1484 | FALSE, /* partial_inplace */ |
| 1485 | 0x000000ff, /* src_mask */ |
| 1486 | 0x000000ff, /* dst_mask */ |
| 1487 | TRUE), /* pcrel_offset */ |
| 1488 | |
| 1489 | /* TLS relocations */ |
| 1490 | HOWTO (R_ARM_TLS_GD32, /* type */ |
| 1491 | 0, /* rightshift */ |
| 1492 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1493 | 32, /* bitsize */ |
| 1494 | FALSE, /* pc_relative */ |
| 1495 | 0, /* bitpos */ |
| 1496 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 1497 | NULL, /* special_function */ |
| 1498 | "R_ARM_TLS_GD32", /* name */ |
| 1499 | TRUE, /* partial_inplace */ |
| 1500 | 0xffffffff, /* src_mask */ |
| 1501 | 0xffffffff, /* dst_mask */ |
| 1502 | FALSE), /* pcrel_offset */ |
| 1503 | |
| 1504 | HOWTO (R_ARM_TLS_LDM32, /* type */ |
| 1505 | 0, /* rightshift */ |
| 1506 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1507 | 32, /* bitsize */ |
| 1508 | FALSE, /* pc_relative */ |
| 1509 | 0, /* bitpos */ |
| 1510 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 1511 | bfd_elf_generic_reloc, /* special_function */ |
| 1512 | "R_ARM_TLS_LDM32", /* name */ |
| 1513 | TRUE, /* partial_inplace */ |
| 1514 | 0xffffffff, /* src_mask */ |
| 1515 | 0xffffffff, /* dst_mask */ |
| 1516 | FALSE), /* pcrel_offset */ |
| 1517 | |
| 1518 | HOWTO (R_ARM_TLS_LDO32, /* type */ |
| 1519 | 0, /* rightshift */ |
| 1520 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1521 | 32, /* bitsize */ |
| 1522 | FALSE, /* pc_relative */ |
| 1523 | 0, /* bitpos */ |
| 1524 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 1525 | bfd_elf_generic_reloc, /* special_function */ |
| 1526 | "R_ARM_TLS_LDO32", /* name */ |
| 1527 | TRUE, /* partial_inplace */ |
| 1528 | 0xffffffff, /* src_mask */ |
| 1529 | 0xffffffff, /* dst_mask */ |
| 1530 | FALSE), /* pcrel_offset */ |
| 1531 | |
| 1532 | HOWTO (R_ARM_TLS_IE32, /* type */ |
| 1533 | 0, /* rightshift */ |
| 1534 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1535 | 32, /* bitsize */ |
| 1536 | FALSE, /* pc_relative */ |
| 1537 | 0, /* bitpos */ |
| 1538 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 1539 | NULL, /* special_function */ |
| 1540 | "R_ARM_TLS_IE32", /* name */ |
| 1541 | TRUE, /* partial_inplace */ |
| 1542 | 0xffffffff, /* src_mask */ |
| 1543 | 0xffffffff, /* dst_mask */ |
| 1544 | FALSE), /* pcrel_offset */ |
| 1545 | |
| 1546 | HOWTO (R_ARM_TLS_LE32, /* type */ |
| 1547 | 0, /* rightshift */ |
| 1548 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1549 | 32, /* bitsize */ |
| 1550 | FALSE, /* pc_relative */ |
| 1551 | 0, /* bitpos */ |
| 1552 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 1553 | bfd_elf_generic_reloc, /* special_function */ |
| 1554 | "R_ARM_TLS_LE32", /* name */ |
| 1555 | TRUE, /* partial_inplace */ |
| 1556 | 0xffffffff, /* src_mask */ |
| 1557 | 0xffffffff, /* dst_mask */ |
| 1558 | FALSE), /* pcrel_offset */ |
| 1559 | |
| 1560 | HOWTO (R_ARM_TLS_LDO12, /* type */ |
| 1561 | 0, /* rightshift */ |
| 1562 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1563 | 12, /* bitsize */ |
| 1564 | FALSE, /* pc_relative */ |
| 1565 | 0, /* bitpos */ |
| 1566 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 1567 | bfd_elf_generic_reloc, /* special_function */ |
| 1568 | "R_ARM_TLS_LDO12", /* name */ |
| 1569 | FALSE, /* partial_inplace */ |
| 1570 | 0x00000fff, /* src_mask */ |
| 1571 | 0x00000fff, /* dst_mask */ |
| 1572 | FALSE), /* pcrel_offset */ |
| 1573 | |
| 1574 | HOWTO (R_ARM_TLS_LE12, /* type */ |
| 1575 | 0, /* rightshift */ |
| 1576 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1577 | 12, /* bitsize */ |
| 1578 | FALSE, /* pc_relative */ |
| 1579 | 0, /* bitpos */ |
| 1580 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 1581 | bfd_elf_generic_reloc, /* special_function */ |
| 1582 | "R_ARM_TLS_LE12", /* name */ |
| 1583 | FALSE, /* partial_inplace */ |
| 1584 | 0x00000fff, /* src_mask */ |
| 1585 | 0x00000fff, /* dst_mask */ |
| 1586 | FALSE), /* pcrel_offset */ |
| 1587 | |
| 1588 | HOWTO (R_ARM_TLS_IE12GP, /* type */ |
| 1589 | 0, /* rightshift */ |
| 1590 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1591 | 12, /* bitsize */ |
| 1592 | FALSE, /* pc_relative */ |
| 1593 | 0, /* bitpos */ |
| 1594 | complain_overflow_bitfield,/* complain_on_overflow */ |
| 1595 | bfd_elf_generic_reloc, /* special_function */ |
| 1596 | "R_ARM_TLS_IE12GP", /* name */ |
| 1597 | FALSE, /* partial_inplace */ |
| 1598 | 0x00000fff, /* src_mask */ |
| 1599 | 0x00000fff, /* dst_mask */ |
| 1600 | FALSE), /* pcrel_offset */ |
| 1601 | }; |
| 1602 | |
| 1603 | /* 112-127 private relocations |
| 1604 | 128 R_ARM_ME_TOO, obsolete |
| 1605 | 129-255 unallocated in AAELF. |
| 1606 | |
| 1607 | 249-255 extended, currently unused, relocations: */ |
| 1608 | |
| 1609 | static reloc_howto_type elf32_arm_howto_table_2[4] = |
| 1610 | { |
| 1611 | HOWTO (R_ARM_RREL32, /* type */ |
| 1612 | 0, /* rightshift */ |
| 1613 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1614 | 0, /* bitsize */ |
| 1615 | FALSE, /* pc_relative */ |
| 1616 | 0, /* bitpos */ |
| 1617 | complain_overflow_dont,/* complain_on_overflow */ |
| 1618 | bfd_elf_generic_reloc, /* special_function */ |
| 1619 | "R_ARM_RREL32", /* name */ |
| 1620 | FALSE, /* partial_inplace */ |
| 1621 | 0, /* src_mask */ |
| 1622 | 0, /* dst_mask */ |
| 1623 | FALSE), /* pcrel_offset */ |
| 1624 | |
| 1625 | HOWTO (R_ARM_RABS32, /* type */ |
| 1626 | 0, /* rightshift */ |
| 1627 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1628 | 0, /* bitsize */ |
| 1629 | FALSE, /* pc_relative */ |
| 1630 | 0, /* bitpos */ |
| 1631 | complain_overflow_dont,/* complain_on_overflow */ |
| 1632 | bfd_elf_generic_reloc, /* special_function */ |
| 1633 | "R_ARM_RABS32", /* name */ |
| 1634 | FALSE, /* partial_inplace */ |
| 1635 | 0, /* src_mask */ |
| 1636 | 0, /* dst_mask */ |
| 1637 | FALSE), /* pcrel_offset */ |
| 1638 | |
| 1639 | HOWTO (R_ARM_RPC24, /* type */ |
| 1640 | 0, /* rightshift */ |
| 1641 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1642 | 0, /* bitsize */ |
| 1643 | FALSE, /* pc_relative */ |
| 1644 | 0, /* bitpos */ |
| 1645 | complain_overflow_dont,/* complain_on_overflow */ |
| 1646 | bfd_elf_generic_reloc, /* special_function */ |
| 1647 | "R_ARM_RPC24", /* name */ |
| 1648 | FALSE, /* partial_inplace */ |
| 1649 | 0, /* src_mask */ |
| 1650 | 0, /* dst_mask */ |
| 1651 | FALSE), /* pcrel_offset */ |
| 1652 | |
| 1653 | HOWTO (R_ARM_RBASE, /* type */ |
| 1654 | 0, /* rightshift */ |
| 1655 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1656 | 0, /* bitsize */ |
| 1657 | FALSE, /* pc_relative */ |
| 1658 | 0, /* bitpos */ |
| 1659 | complain_overflow_dont,/* complain_on_overflow */ |
| 1660 | bfd_elf_generic_reloc, /* special_function */ |
| 1661 | "R_ARM_RBASE", /* name */ |
| 1662 | FALSE, /* partial_inplace */ |
| 1663 | 0, /* src_mask */ |
| 1664 | 0, /* dst_mask */ |
| 1665 | FALSE) /* pcrel_offset */ |
| 1666 | }; |
| 1667 | |
| 1668 | static reloc_howto_type * |
| 1669 | elf32_arm_howto_from_type (unsigned int r_type) |
| 1670 | { |
| 1671 | if (r_type < NUM_ELEM (elf32_arm_howto_table_1)) |
| 1672 | return &elf32_arm_howto_table_1[r_type]; |
| 1673 | |
| 1674 | if (r_type >= R_ARM_RREL32 |
| 1675 | && r_type < R_ARM_RREL32 + NUM_ELEM (elf32_arm_howto_table_2)) |
| 1676 | return &elf32_arm_howto_table_2[r_type - R_ARM_RREL32]; |
| 1677 | |
| 1678 | return NULL; |
| 1679 | } |
| 1680 | |
| 1681 | static void |
| 1682 | elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc, |
| 1683 | Elf_Internal_Rela * elf_reloc) |
| 1684 | { |
| 1685 | unsigned int r_type; |
| 1686 | |
| 1687 | r_type = ELF32_R_TYPE (elf_reloc->r_info); |
| 1688 | bfd_reloc->howto = elf32_arm_howto_from_type (r_type); |
| 1689 | } |
| 1690 | |
| 1691 | struct elf32_arm_reloc_map |
| 1692 | { |
| 1693 | bfd_reloc_code_real_type bfd_reloc_val; |
| 1694 | unsigned char elf_reloc_val; |
| 1695 | }; |
| 1696 | |
| 1697 | /* All entries in this list must also be present in elf32_arm_howto_table. */ |
| 1698 | static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] = |
| 1699 | { |
| 1700 | {BFD_RELOC_NONE, R_ARM_NONE}, |
| 1701 | {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24}, |
| 1702 | {BFD_RELOC_ARM_PCREL_CALL, R_ARM_CALL}, |
| 1703 | {BFD_RELOC_ARM_PCREL_JUMP, R_ARM_JUMP24}, |
| 1704 | {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25}, |
| 1705 | {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22}, |
| 1706 | {BFD_RELOC_32, R_ARM_ABS32}, |
| 1707 | {BFD_RELOC_32_PCREL, R_ARM_REL32}, |
| 1708 | {BFD_RELOC_8, R_ARM_ABS8}, |
| 1709 | {BFD_RELOC_16, R_ARM_ABS16}, |
| 1710 | {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12}, |
| 1711 | {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5}, |
| 1712 | {BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24}, |
| 1713 | {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL}, |
| 1714 | {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11}, |
| 1715 | {BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19}, |
| 1716 | {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8}, |
| 1717 | {BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6}, |
| 1718 | {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT}, |
| 1719 | {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT}, |
| 1720 | {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE}, |
| 1721 | {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32}, |
| 1722 | {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC}, |
| 1723 | {BFD_RELOC_ARM_GOT32, R_ARM_GOT32}, |
| 1724 | {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}, |
| 1725 | {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1}, |
| 1726 | {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32}, |
| 1727 | {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32}, |
| 1728 | {BFD_RELOC_ARM_PREL31, R_ARM_PREL31}, |
| 1729 | {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2}, |
| 1730 | {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}, |
| 1731 | {BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32}, |
| 1732 | {BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32}, |
| 1733 | {BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32}, |
| 1734 | {BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32}, |
| 1735 | {BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32}, |
| 1736 | {BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32}, |
| 1737 | {BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32}, |
| 1738 | {BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32}, |
| 1739 | {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT}, |
| 1740 | {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY}, |
| 1741 | {BFD_RELOC_ARM_MOVW, R_ARM_MOVW_ABS_NC}, |
| 1742 | {BFD_RELOC_ARM_MOVT, R_ARM_MOVT_ABS}, |
| 1743 | {BFD_RELOC_ARM_MOVW_PCREL, R_ARM_MOVW_PREL_NC}, |
| 1744 | {BFD_RELOC_ARM_MOVT_PCREL, R_ARM_MOVT_PREL}, |
| 1745 | {BFD_RELOC_ARM_THUMB_MOVW, R_ARM_THM_MOVW_ABS_NC}, |
| 1746 | {BFD_RELOC_ARM_THUMB_MOVT, R_ARM_THM_MOVT_ABS}, |
| 1747 | {BFD_RELOC_ARM_THUMB_MOVW_PCREL, R_ARM_THM_MOVW_PREL_NC}, |
| 1748 | {BFD_RELOC_ARM_THUMB_MOVT_PCREL, R_ARM_THM_MOVT_PREL}, |
| 1749 | {BFD_RELOC_ARM_ALU_PC_G0_NC, R_ARM_ALU_PC_G0_NC}, |
| 1750 | {BFD_RELOC_ARM_ALU_PC_G0, R_ARM_ALU_PC_G0}, |
| 1751 | {BFD_RELOC_ARM_ALU_PC_G1_NC, R_ARM_ALU_PC_G1_NC}, |
| 1752 | {BFD_RELOC_ARM_ALU_PC_G1, R_ARM_ALU_PC_G1}, |
| 1753 | {BFD_RELOC_ARM_ALU_PC_G2, R_ARM_ALU_PC_G2}, |
| 1754 | {BFD_RELOC_ARM_LDR_PC_G0, R_ARM_LDR_PC_G0}, |
| 1755 | {BFD_RELOC_ARM_LDR_PC_G1, R_ARM_LDR_PC_G1}, |
| 1756 | {BFD_RELOC_ARM_LDR_PC_G2, R_ARM_LDR_PC_G2}, |
| 1757 | {BFD_RELOC_ARM_LDRS_PC_G0, R_ARM_LDRS_PC_G0}, |
| 1758 | {BFD_RELOC_ARM_LDRS_PC_G1, R_ARM_LDRS_PC_G1}, |
| 1759 | {BFD_RELOC_ARM_LDRS_PC_G2, R_ARM_LDRS_PC_G2}, |
| 1760 | {BFD_RELOC_ARM_LDC_PC_G0, R_ARM_LDC_PC_G0}, |
| 1761 | {BFD_RELOC_ARM_LDC_PC_G1, R_ARM_LDC_PC_G1}, |
| 1762 | {BFD_RELOC_ARM_LDC_PC_G2, R_ARM_LDC_PC_G2}, |
| 1763 | {BFD_RELOC_ARM_ALU_SB_G0_NC, R_ARM_ALU_SB_G0_NC}, |
| 1764 | {BFD_RELOC_ARM_ALU_SB_G0, R_ARM_ALU_SB_G0}, |
| 1765 | {BFD_RELOC_ARM_ALU_SB_G1_NC, R_ARM_ALU_SB_G1_NC}, |
| 1766 | {BFD_RELOC_ARM_ALU_SB_G1, R_ARM_ALU_SB_G1}, |
| 1767 | {BFD_RELOC_ARM_ALU_SB_G2, R_ARM_ALU_SB_G2}, |
| 1768 | {BFD_RELOC_ARM_LDR_SB_G0, R_ARM_LDR_SB_G0}, |
| 1769 | {BFD_RELOC_ARM_LDR_SB_G1, R_ARM_LDR_SB_G1}, |
| 1770 | {BFD_RELOC_ARM_LDR_SB_G2, R_ARM_LDR_SB_G2}, |
| 1771 | {BFD_RELOC_ARM_LDRS_SB_G0, R_ARM_LDRS_SB_G0}, |
| 1772 | {BFD_RELOC_ARM_LDRS_SB_G1, R_ARM_LDRS_SB_G1}, |
| 1773 | {BFD_RELOC_ARM_LDRS_SB_G2, R_ARM_LDRS_SB_G2}, |
| 1774 | {BFD_RELOC_ARM_LDC_SB_G0, R_ARM_LDC_SB_G0}, |
| 1775 | {BFD_RELOC_ARM_LDC_SB_G1, R_ARM_LDC_SB_G1}, |
| 1776 | {BFD_RELOC_ARM_LDC_SB_G2, R_ARM_LDC_SB_G2} |
| 1777 | }; |
| 1778 | |
| 1779 | static reloc_howto_type * |
| 1780 | elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 1781 | bfd_reloc_code_real_type code) |
| 1782 | { |
| 1783 | unsigned int i; |
| 1784 | for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++) |
| 1785 | if (elf32_arm_reloc_map[i].bfd_reloc_val == code) |
| 1786 | return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val); |
| 1787 | |
| 1788 | return NULL; |
| 1789 | } |
| 1790 | |
| 1791 | static reloc_howto_type * |
| 1792 | elf32_arm_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 1793 | const char *r_name) |
| 1794 | { |
| 1795 | unsigned int i; |
| 1796 | |
| 1797 | for (i = 0; |
| 1798 | i < (sizeof (elf32_arm_howto_table_1) |
| 1799 | / sizeof (elf32_arm_howto_table_1[0])); |
| 1800 | i++) |
| 1801 | if (elf32_arm_howto_table_1[i].name != NULL |
| 1802 | && strcasecmp (elf32_arm_howto_table_1[i].name, r_name) == 0) |
| 1803 | return &elf32_arm_howto_table_1[i]; |
| 1804 | |
| 1805 | for (i = 0; |
| 1806 | i < (sizeof (elf32_arm_howto_table_2) |
| 1807 | / sizeof (elf32_arm_howto_table_2[0])); |
| 1808 | i++) |
| 1809 | if (elf32_arm_howto_table_2[i].name != NULL |
| 1810 | && strcasecmp (elf32_arm_howto_table_2[i].name, r_name) == 0) |
| 1811 | return &elf32_arm_howto_table_2[i]; |
| 1812 | |
| 1813 | return NULL; |
| 1814 | } |
| 1815 | |
| 1816 | /* Support for core dump NOTE sections */ |
| 1817 | static bfd_boolean |
| 1818 | elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
| 1819 | { |
| 1820 | int offset; |
| 1821 | size_t size; |
| 1822 | |
| 1823 | switch (note->descsz) |
| 1824 | { |
| 1825 | default: |
| 1826 | return FALSE; |
| 1827 | |
| 1828 | case 148: /* Linux/ARM 32-bit*/ |
| 1829 | /* pr_cursig */ |
| 1830 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); |
| 1831 | |
| 1832 | /* pr_pid */ |
| 1833 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); |
| 1834 | |
| 1835 | /* pr_reg */ |
| 1836 | offset = 72; |
| 1837 | size = 72; |
| 1838 | |
| 1839 | break; |
| 1840 | } |
| 1841 | |
| 1842 | /* Make a ".reg/999" section. */ |
| 1843 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
| 1844 | size, note->descpos + offset); |
| 1845 | } |
| 1846 | |
| 1847 | static bfd_boolean |
| 1848 | elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
| 1849 | { |
| 1850 | switch (note->descsz) |
| 1851 | { |
| 1852 | default: |
| 1853 | return FALSE; |
| 1854 | |
| 1855 | case 124: /* Linux/ARM elf_prpsinfo */ |
| 1856 | elf_tdata (abfd)->core_program |
| 1857 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
| 1858 | elf_tdata (abfd)->core_command |
| 1859 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
| 1860 | } |
| 1861 | |
| 1862 | /* Note that for some reason, a spurious space is tacked |
| 1863 | onto the end of the args in some (at least one anyway) |
| 1864 | implementations, so strip it off if it exists. */ |
| 1865 | |
| 1866 | { |
| 1867 | char *command = elf_tdata (abfd)->core_command; |
| 1868 | int n = strlen (command); |
| 1869 | |
| 1870 | if (0 < n && command[n - 1] == ' ') |
| 1871 | command[n - 1] = '\0'; |
| 1872 | } |
| 1873 | |
| 1874 | return TRUE; |
| 1875 | } |
| 1876 | |
| 1877 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec |
| 1878 | #define TARGET_LITTLE_NAME "elf32-littlearm" |
| 1879 | #define TARGET_BIG_SYM bfd_elf32_bigarm_vec |
| 1880 | #define TARGET_BIG_NAME "elf32-bigarm" |
| 1881 | |
| 1882 | #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus |
| 1883 | #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo |
| 1884 | |
| 1885 | typedef unsigned long int insn32; |
| 1886 | typedef unsigned short int insn16; |
| 1887 | |
| 1888 | /* In lieu of proper flags, assume all EABIv4 or later objects are |
| 1889 | interworkable. */ |
| 1890 | #define INTERWORK_FLAG(abfd) \ |
| 1891 | (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \ |
| 1892 | || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK)) |
| 1893 | |
| 1894 | /* The linker script knows the section names for placement. |
| 1895 | The entry_names are used to do simple name mangling on the stubs. |
| 1896 | Given a function name, and its type, the stub can be found. The |
| 1897 | name can be changed. The only requirement is the %s be present. */ |
| 1898 | #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t" |
| 1899 | #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb" |
| 1900 | |
| 1901 | #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7" |
| 1902 | #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm" |
| 1903 | |
| 1904 | #define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer" |
| 1905 | #define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x" |
| 1906 | |
| 1907 | /* The name of the dynamic interpreter. This is put in the .interp |
| 1908 | section. */ |
| 1909 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" |
| 1910 | |
| 1911 | #ifdef FOUR_WORD_PLT |
| 1912 | |
| 1913 | /* The first entry in a procedure linkage table looks like |
| 1914 | this. It is set up so that any shared library function that is |
| 1915 | called before the relocation has been set up calls the dynamic |
| 1916 | linker first. */ |
| 1917 | static const bfd_vma elf32_arm_plt0_entry [] = |
| 1918 | { |
| 1919 | 0xe52de004, /* str lr, [sp, #-4]! */ |
| 1920 | 0xe59fe010, /* ldr lr, [pc, #16] */ |
| 1921 | 0xe08fe00e, /* add lr, pc, lr */ |
| 1922 | 0xe5bef008, /* ldr pc, [lr, #8]! */ |
| 1923 | }; |
| 1924 | |
| 1925 | /* Subsequent entries in a procedure linkage table look like |
| 1926 | this. */ |
| 1927 | static const bfd_vma elf32_arm_plt_entry [] = |
| 1928 | { |
| 1929 | 0xe28fc600, /* add ip, pc, #NN */ |
| 1930 | 0xe28cca00, /* add ip, ip, #NN */ |
| 1931 | 0xe5bcf000, /* ldr pc, [ip, #NN]! */ |
| 1932 | 0x00000000, /* unused */ |
| 1933 | }; |
| 1934 | |
| 1935 | #else |
| 1936 | |
| 1937 | /* The first entry in a procedure linkage table looks like |
| 1938 | this. It is set up so that any shared library function that is |
| 1939 | called before the relocation has been set up calls the dynamic |
| 1940 | linker first. */ |
| 1941 | static const bfd_vma elf32_arm_plt0_entry [] = |
| 1942 | { |
| 1943 | 0xe52de004, /* str lr, [sp, #-4]! */ |
| 1944 | 0xe59fe004, /* ldr lr, [pc, #4] */ |
| 1945 | 0xe08fe00e, /* add lr, pc, lr */ |
| 1946 | 0xe5bef008, /* ldr pc, [lr, #8]! */ |
| 1947 | 0x00000000, /* &GOT[0] - . */ |
| 1948 | }; |
| 1949 | |
| 1950 | /* Subsequent entries in a procedure linkage table look like |
| 1951 | this. */ |
| 1952 | static const bfd_vma elf32_arm_plt_entry [] = |
| 1953 | { |
| 1954 | 0xe28fc600, /* add ip, pc, #0xNN00000 */ |
| 1955 | 0xe28cca00, /* add ip, ip, #0xNN000 */ |
| 1956 | 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */ |
| 1957 | }; |
| 1958 | |
| 1959 | #endif |
| 1960 | |
| 1961 | /* The format of the first entry in the procedure linkage table |
| 1962 | for a VxWorks executable. */ |
| 1963 | static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] = |
| 1964 | { |
| 1965 | 0xe52dc008, /* str ip,[sp,#-8]! */ |
| 1966 | 0xe59fc000, /* ldr ip,[pc] */ |
| 1967 | 0xe59cf008, /* ldr pc,[ip,#8] */ |
| 1968 | 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */ |
| 1969 | }; |
| 1970 | |
| 1971 | /* The format of subsequent entries in a VxWorks executable. */ |
| 1972 | static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] = |
| 1973 | { |
| 1974 | 0xe59fc000, /* ldr ip,[pc] */ |
| 1975 | 0xe59cf000, /* ldr pc,[ip] */ |
| 1976 | 0x00000000, /* .long @got */ |
| 1977 | 0xe59fc000, /* ldr ip,[pc] */ |
| 1978 | 0xea000000, /* b _PLT */ |
| 1979 | 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */ |
| 1980 | }; |
| 1981 | |
| 1982 | /* The format of entries in a VxWorks shared library. */ |
| 1983 | static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] = |
| 1984 | { |
| 1985 | 0xe59fc000, /* ldr ip,[pc] */ |
| 1986 | 0xe79cf009, /* ldr pc,[ip,r9] */ |
| 1987 | 0x00000000, /* .long @got */ |
| 1988 | 0xe59fc000, /* ldr ip,[pc] */ |
| 1989 | 0xe599f008, /* ldr pc,[r9,#8] */ |
| 1990 | 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */ |
| 1991 | }; |
| 1992 | |
| 1993 | /* An initial stub used if the PLT entry is referenced from Thumb code. */ |
| 1994 | #define PLT_THUMB_STUB_SIZE 4 |
| 1995 | static const bfd_vma elf32_arm_plt_thumb_stub [] = |
| 1996 | { |
| 1997 | 0x4778, /* bx pc */ |
| 1998 | 0x46c0 /* nop */ |
| 1999 | }; |
| 2000 | |
| 2001 | /* The entries in a PLT when using a DLL-based target with multiple |
| 2002 | address spaces. */ |
| 2003 | static const bfd_vma elf32_arm_symbian_plt_entry [] = |
| 2004 | { |
| 2005 | 0xe51ff004, /* ldr pc, [pc, #-4] */ |
| 2006 | 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */ |
| 2007 | }; |
| 2008 | |
| 2009 | /* Used to build a map of a section. This is required for mixed-endian |
| 2010 | code/data. */ |
| 2011 | |
| 2012 | typedef struct elf32_elf_section_map |
| 2013 | { |
| 2014 | bfd_vma vma; |
| 2015 | char type; |
| 2016 | } |
| 2017 | elf32_arm_section_map; |
| 2018 | |
| 2019 | /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */ |
| 2020 | |
| 2021 | typedef enum |
| 2022 | { |
| 2023 | VFP11_ERRATUM_BRANCH_TO_ARM_VENEER, |
| 2024 | VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER, |
| 2025 | VFP11_ERRATUM_ARM_VENEER, |
| 2026 | VFP11_ERRATUM_THUMB_VENEER |
| 2027 | } |
| 2028 | elf32_vfp11_erratum_type; |
| 2029 | |
| 2030 | typedef struct elf32_vfp11_erratum_list |
| 2031 | { |
| 2032 | struct elf32_vfp11_erratum_list *next; |
| 2033 | bfd_vma vma; |
| 2034 | union |
| 2035 | { |
| 2036 | struct |
| 2037 | { |
| 2038 | struct elf32_vfp11_erratum_list *veneer; |
| 2039 | unsigned int vfp_insn; |
| 2040 | } b; |
| 2041 | struct |
| 2042 | { |
| 2043 | struct elf32_vfp11_erratum_list *branch; |
| 2044 | unsigned int id; |
| 2045 | } v; |
| 2046 | } u; |
| 2047 | elf32_vfp11_erratum_type type; |
| 2048 | } |
| 2049 | elf32_vfp11_erratum_list; |
| 2050 | |
| 2051 | typedef struct _arm_elf_section_data |
| 2052 | { |
| 2053 | struct bfd_elf_section_data elf; |
| 2054 | unsigned int mapcount; |
| 2055 | unsigned int mapsize; |
| 2056 | elf32_arm_section_map *map; |
| 2057 | unsigned int erratumcount; |
| 2058 | elf32_vfp11_erratum_list *erratumlist; |
| 2059 | } |
| 2060 | _arm_elf_section_data; |
| 2061 | |
| 2062 | #define elf32_arm_section_data(sec) \ |
| 2063 | ((_arm_elf_section_data *) elf_section_data (sec)) |
| 2064 | |
| 2065 | /* The size of the thread control block. */ |
| 2066 | #define TCB_SIZE 8 |
| 2067 | |
| 2068 | struct elf32_arm_obj_tdata |
| 2069 | { |
| 2070 | struct elf_obj_tdata root; |
| 2071 | |
| 2072 | /* tls_type for each local got entry. */ |
| 2073 | char *local_got_tls_type; |
| 2074 | |
| 2075 | /* Zero to warn when linking objects with incompatible enum sizes. */ |
| 2076 | int no_enum_size_warning; |
| 2077 | }; |
| 2078 | |
| 2079 | #define elf32_arm_tdata(abfd) \ |
| 2080 | ((struct elf32_arm_obj_tdata *) (abfd)->tdata.any) |
| 2081 | |
| 2082 | #define elf32_arm_local_got_tls_type(abfd) \ |
| 2083 | (elf32_arm_tdata (abfd)->local_got_tls_type) |
| 2084 | |
| 2085 | static bfd_boolean |
| 2086 | elf32_arm_mkobject (bfd *abfd) |
| 2087 | { |
| 2088 | if (abfd->tdata.any == NULL) |
| 2089 | { |
| 2090 | bfd_size_type amt = sizeof (struct elf32_arm_obj_tdata); |
| 2091 | abfd->tdata.any = bfd_zalloc (abfd, amt); |
| 2092 | if (abfd->tdata.any == NULL) |
| 2093 | return FALSE; |
| 2094 | } |
| 2095 | return bfd_elf_mkobject (abfd); |
| 2096 | } |
| 2097 | |
| 2098 | /* The ARM linker needs to keep track of the number of relocs that it |
| 2099 | decides to copy in check_relocs for each symbol. This is so that |
| 2100 | it can discard PC relative relocs if it doesn't need them when |
| 2101 | linking with -Bsymbolic. We store the information in a field |
| 2102 | extending the regular ELF linker hash table. */ |
| 2103 | |
| 2104 | /* This structure keeps track of the number of relocs we have copied |
| 2105 | for a given symbol. */ |
| 2106 | struct elf32_arm_relocs_copied |
| 2107 | { |
| 2108 | /* Next section. */ |
| 2109 | struct elf32_arm_relocs_copied * next; |
| 2110 | /* A section in dynobj. */ |
| 2111 | asection * section; |
| 2112 | /* Number of relocs copied in this section. */ |
| 2113 | bfd_size_type count; |
| 2114 | /* Number of PC-relative relocs copied in this section. */ |
| 2115 | bfd_size_type pc_count; |
| 2116 | }; |
| 2117 | |
| 2118 | #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent)) |
| 2119 | |
| 2120 | /* Arm ELF linker hash entry. */ |
| 2121 | struct elf32_arm_link_hash_entry |
| 2122 | { |
| 2123 | struct elf_link_hash_entry root; |
| 2124 | |
| 2125 | /* Number of PC relative relocs copied for this symbol. */ |
| 2126 | struct elf32_arm_relocs_copied * relocs_copied; |
| 2127 | |
| 2128 | /* We reference count Thumb references to a PLT entry separately, |
| 2129 | so that we can emit the Thumb trampoline only if needed. */ |
| 2130 | bfd_signed_vma plt_thumb_refcount; |
| 2131 | |
| 2132 | /* Since PLT entries have variable size if the Thumb prologue is |
| 2133 | used, we need to record the index into .got.plt instead of |
| 2134 | recomputing it from the PLT offset. */ |
| 2135 | bfd_signed_vma plt_got_offset; |
| 2136 | |
| 2137 | #define GOT_UNKNOWN 0 |
| 2138 | #define GOT_NORMAL 1 |
| 2139 | #define GOT_TLS_GD 2 |
| 2140 | #define GOT_TLS_IE 4 |
| 2141 | unsigned char tls_type; |
| 2142 | |
| 2143 | /* The symbol marking the real symbol location for exported thumb |
| 2144 | symbols with Arm stubs. */ |
| 2145 | struct elf_link_hash_entry *export_glue; |
| 2146 | }; |
| 2147 | |
| 2148 | /* Traverse an arm ELF linker hash table. */ |
| 2149 | #define elf32_arm_link_hash_traverse(table, func, info) \ |
| 2150 | (elf_link_hash_traverse \ |
| 2151 | (&(table)->root, \ |
| 2152 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
| 2153 | (info))) |
| 2154 | |
| 2155 | /* Get the ARM elf linker hash table from a link_info structure. */ |
| 2156 | #define elf32_arm_hash_table(info) \ |
| 2157 | ((struct elf32_arm_link_hash_table *) ((info)->hash)) |
| 2158 | |
| 2159 | /* ARM ELF linker hash table. */ |
| 2160 | struct elf32_arm_link_hash_table |
| 2161 | { |
| 2162 | /* The main hash table. */ |
| 2163 | struct elf_link_hash_table root; |
| 2164 | |
| 2165 | /* The size in bytes of the section containing the Thumb-to-ARM glue. */ |
| 2166 | bfd_size_type thumb_glue_size; |
| 2167 | |
| 2168 | /* The size in bytes of the section containing the ARM-to-Thumb glue. */ |
| 2169 | bfd_size_type arm_glue_size; |
| 2170 | |
| 2171 | /* The size in bytes of the section containing glue for VFP11 erratum |
| 2172 | veneers. */ |
| 2173 | bfd_size_type vfp11_erratum_glue_size; |
| 2174 | |
| 2175 | /* An arbitrary input BFD chosen to hold the glue sections. */ |
| 2176 | bfd * bfd_of_glue_owner; |
| 2177 | |
| 2178 | /* Nonzero to output a BE8 image. */ |
| 2179 | int byteswap_code; |
| 2180 | |
| 2181 | /* Zero if R_ARM_TARGET1 means R_ARM_ABS32. |
| 2182 | Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */ |
| 2183 | int target1_is_rel; |
| 2184 | |
| 2185 | /* The relocation to use for R_ARM_TARGET2 relocations. */ |
| 2186 | int target2_reloc; |
| 2187 | |
| 2188 | /* Nonzero to fix BX instructions for ARMv4 targets. */ |
| 2189 | int fix_v4bx; |
| 2190 | |
| 2191 | /* Nonzero if the ARM/Thumb BLX instructions are available for use. */ |
| 2192 | int use_blx; |
| 2193 | |
| 2194 | /* What sort of code sequences we should look for which may trigger the |
| 2195 | VFP11 denorm erratum. */ |
| 2196 | bfd_arm_vfp11_fix vfp11_fix; |
| 2197 | |
| 2198 | /* Global counter for the number of fixes we have emitted. */ |
| 2199 | int num_vfp11_fixes; |
| 2200 | |
| 2201 | /* Nonzero to force PIC branch veneers. */ |
| 2202 | int pic_veneer; |
| 2203 | |
| 2204 | /* The number of bytes in the initial entry in the PLT. */ |
| 2205 | bfd_size_type plt_header_size; |
| 2206 | |
| 2207 | /* The number of bytes in the subsequent PLT etries. */ |
| 2208 | bfd_size_type plt_entry_size; |
| 2209 | |
| 2210 | /* True if the target system is VxWorks. */ |
| 2211 | int vxworks_p; |
| 2212 | |
| 2213 | /* True if the target system is Symbian OS. */ |
| 2214 | int symbian_p; |
| 2215 | |
| 2216 | /* True if the target uses REL relocations. */ |
| 2217 | int use_rel; |
| 2218 | |
| 2219 | /* Short-cuts to get to dynamic linker sections. */ |
| 2220 | asection *sgot; |
| 2221 | asection *sgotplt; |
| 2222 | asection *srelgot; |
| 2223 | asection *splt; |
| 2224 | asection *srelplt; |
| 2225 | asection *sdynbss; |
| 2226 | asection *srelbss; |
| 2227 | |
| 2228 | /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */ |
| 2229 | asection *srelplt2; |
| 2230 | |
| 2231 | /* Data for R_ARM_TLS_LDM32 relocations. */ |
| 2232 | union { |
| 2233 | bfd_signed_vma refcount; |
| 2234 | bfd_vma offset; |
| 2235 | } tls_ldm_got; |
| 2236 | |
| 2237 | /* Small local sym to section mapping cache. */ |
| 2238 | struct sym_sec_cache sym_sec; |
| 2239 | |
| 2240 | /* For convenience in allocate_dynrelocs. */ |
| 2241 | bfd * obfd; |
| 2242 | }; |
| 2243 | |
| 2244 | /* Create an entry in an ARM ELF linker hash table. */ |
| 2245 | |
| 2246 | static struct bfd_hash_entry * |
| 2247 | elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry, |
| 2248 | struct bfd_hash_table * table, |
| 2249 | const char * string) |
| 2250 | { |
| 2251 | struct elf32_arm_link_hash_entry * ret = |
| 2252 | (struct elf32_arm_link_hash_entry *) entry; |
| 2253 | |
| 2254 | /* Allocate the structure if it has not already been allocated by a |
| 2255 | subclass. */ |
| 2256 | if (ret == (struct elf32_arm_link_hash_entry *) NULL) |
| 2257 | ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry)); |
| 2258 | if (ret == NULL) |
| 2259 | return (struct bfd_hash_entry *) ret; |
| 2260 | |
| 2261 | /* Call the allocation method of the superclass. */ |
| 2262 | ret = ((struct elf32_arm_link_hash_entry *) |
| 2263 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
| 2264 | table, string)); |
| 2265 | if (ret != NULL) |
| 2266 | { |
| 2267 | ret->relocs_copied = NULL; |
| 2268 | ret->tls_type = GOT_UNKNOWN; |
| 2269 | ret->plt_thumb_refcount = 0; |
| 2270 | ret->plt_got_offset = -1; |
| 2271 | ret->export_glue = NULL; |
| 2272 | } |
| 2273 | |
| 2274 | return (struct bfd_hash_entry *) ret; |
| 2275 | } |
| 2276 | |
| 2277 | /* Return true if NAME is the name of the relocation section associated |
| 2278 | with S. */ |
| 2279 | |
| 2280 | static bfd_boolean |
| 2281 | reloc_section_p (struct elf32_arm_link_hash_table *htab, |
| 2282 | const char *name, asection *s) |
| 2283 | { |
| 2284 | if (htab->use_rel) |
| 2285 | return CONST_STRNEQ (name, ".rel") && strcmp (s->name, name + 4) == 0; |
| 2286 | else |
| 2287 | return CONST_STRNEQ (name, ".rela") && strcmp (s->name, name + 5) == 0; |
| 2288 | } |
| 2289 | |
| 2290 | /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up |
| 2291 | shortcuts to them in our hash table. */ |
| 2292 | |
| 2293 | static bfd_boolean |
| 2294 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
| 2295 | { |
| 2296 | struct elf32_arm_link_hash_table *htab; |
| 2297 | |
| 2298 | htab = elf32_arm_hash_table (info); |
| 2299 | /* BPABI objects never have a GOT, or associated sections. */ |
| 2300 | if (htab->symbian_p) |
| 2301 | return TRUE; |
| 2302 | |
| 2303 | if (! _bfd_elf_create_got_section (dynobj, info)) |
| 2304 | return FALSE; |
| 2305 | |
| 2306 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 2307 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); |
| 2308 | if (!htab->sgot || !htab->sgotplt) |
| 2309 | abort (); |
| 2310 | |
| 2311 | htab->srelgot = bfd_make_section_with_flags (dynobj, |
| 2312 | RELOC_SECTION (htab, ".got"), |
| 2313 | (SEC_ALLOC | SEC_LOAD |
| 2314 | | SEC_HAS_CONTENTS |
| 2315 | | SEC_IN_MEMORY |
| 2316 | | SEC_LINKER_CREATED |
| 2317 | | SEC_READONLY)); |
| 2318 | if (htab->srelgot == NULL |
| 2319 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) |
| 2320 | return FALSE; |
| 2321 | return TRUE; |
| 2322 | } |
| 2323 | |
| 2324 | /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and |
| 2325 | .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our |
| 2326 | hash table. */ |
| 2327 | |
| 2328 | static bfd_boolean |
| 2329 | elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
| 2330 | { |
| 2331 | struct elf32_arm_link_hash_table *htab; |
| 2332 | |
| 2333 | htab = elf32_arm_hash_table (info); |
| 2334 | if (!htab->sgot && !create_got_section (dynobj, info)) |
| 2335 | return FALSE; |
| 2336 | |
| 2337 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
| 2338 | return FALSE; |
| 2339 | |
| 2340 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 2341 | htab->srelplt = bfd_get_section_by_name (dynobj, |
| 2342 | RELOC_SECTION (htab, ".plt")); |
| 2343 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); |
| 2344 | if (!info->shared) |
| 2345 | htab->srelbss = bfd_get_section_by_name (dynobj, |
| 2346 | RELOC_SECTION (htab, ".bss")); |
| 2347 | |
| 2348 | if (htab->vxworks_p) |
| 2349 | { |
| 2350 | if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2)) |
| 2351 | return FALSE; |
| 2352 | |
| 2353 | if (info->shared) |
| 2354 | { |
| 2355 | htab->plt_header_size = 0; |
| 2356 | htab->plt_entry_size |
| 2357 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry); |
| 2358 | } |
| 2359 | else |
| 2360 | { |
| 2361 | htab->plt_header_size |
| 2362 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry); |
| 2363 | htab->plt_entry_size |
| 2364 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry); |
| 2365 | } |
| 2366 | } |
| 2367 | |
| 2368 | if (!htab->splt |
| 2369 | || !htab->srelplt |
| 2370 | || !htab->sdynbss |
| 2371 | || (!info->shared && !htab->srelbss)) |
| 2372 | abort (); |
| 2373 | |
| 2374 | return TRUE; |
| 2375 | } |
| 2376 | |
| 2377 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
| 2378 | |
| 2379 | static void |
| 2380 | elf32_arm_copy_indirect_symbol (struct bfd_link_info *info, |
| 2381 | struct elf_link_hash_entry *dir, |
| 2382 | struct elf_link_hash_entry *ind) |
| 2383 | { |
| 2384 | struct elf32_arm_link_hash_entry *edir, *eind; |
| 2385 | |
| 2386 | edir = (struct elf32_arm_link_hash_entry *) dir; |
| 2387 | eind = (struct elf32_arm_link_hash_entry *) ind; |
| 2388 | |
| 2389 | if (eind->relocs_copied != NULL) |
| 2390 | { |
| 2391 | if (edir->relocs_copied != NULL) |
| 2392 | { |
| 2393 | struct elf32_arm_relocs_copied **pp; |
| 2394 | struct elf32_arm_relocs_copied *p; |
| 2395 | |
| 2396 | /* Add reloc counts against the indirect sym to the direct sym |
| 2397 | list. Merge any entries against the same section. */ |
| 2398 | for (pp = &eind->relocs_copied; (p = *pp) != NULL; ) |
| 2399 | { |
| 2400 | struct elf32_arm_relocs_copied *q; |
| 2401 | |
| 2402 | for (q = edir->relocs_copied; q != NULL; q = q->next) |
| 2403 | if (q->section == p->section) |
| 2404 | { |
| 2405 | q->pc_count += p->pc_count; |
| 2406 | q->count += p->count; |
| 2407 | *pp = p->next; |
| 2408 | break; |
| 2409 | } |
| 2410 | if (q == NULL) |
| 2411 | pp = &p->next; |
| 2412 | } |
| 2413 | *pp = edir->relocs_copied; |
| 2414 | } |
| 2415 | |
| 2416 | edir->relocs_copied = eind->relocs_copied; |
| 2417 | eind->relocs_copied = NULL; |
| 2418 | } |
| 2419 | |
| 2420 | if (ind->root.type == bfd_link_hash_indirect) |
| 2421 | { |
| 2422 | /* Copy over PLT info. */ |
| 2423 | edir->plt_thumb_refcount += eind->plt_thumb_refcount; |
| 2424 | eind->plt_thumb_refcount = 0; |
| 2425 | |
| 2426 | if (dir->got.refcount <= 0) |
| 2427 | { |
| 2428 | edir->tls_type = eind->tls_type; |
| 2429 | eind->tls_type = GOT_UNKNOWN; |
| 2430 | } |
| 2431 | } |
| 2432 | |
| 2433 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
| 2434 | } |
| 2435 | |
| 2436 | /* Create an ARM elf linker hash table. */ |
| 2437 | |
| 2438 | static struct bfd_link_hash_table * |
| 2439 | elf32_arm_link_hash_table_create (bfd *abfd) |
| 2440 | { |
| 2441 | struct elf32_arm_link_hash_table *ret; |
| 2442 | bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table); |
| 2443 | |
| 2444 | ret = bfd_malloc (amt); |
| 2445 | if (ret == NULL) |
| 2446 | return NULL; |
| 2447 | |
| 2448 | if (!_bfd_elf_link_hash_table_init (& ret->root, abfd, |
| 2449 | elf32_arm_link_hash_newfunc, |
| 2450 | sizeof (struct elf32_arm_link_hash_entry))) |
| 2451 | { |
| 2452 | free (ret); |
| 2453 | return NULL; |
| 2454 | } |
| 2455 | |
| 2456 | ret->sgot = NULL; |
| 2457 | ret->sgotplt = NULL; |
| 2458 | ret->srelgot = NULL; |
| 2459 | ret->splt = NULL; |
| 2460 | ret->srelplt = NULL; |
| 2461 | ret->sdynbss = NULL; |
| 2462 | ret->srelbss = NULL; |
| 2463 | ret->srelplt2 = NULL; |
| 2464 | ret->thumb_glue_size = 0; |
| 2465 | ret->arm_glue_size = 0; |
| 2466 | ret->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; |
| 2467 | ret->vfp11_erratum_glue_size = 0; |
| 2468 | ret->num_vfp11_fixes = 0; |
| 2469 | ret->bfd_of_glue_owner = NULL; |
| 2470 | ret->byteswap_code = 0; |
| 2471 | ret->target1_is_rel = 0; |
| 2472 | ret->target2_reloc = R_ARM_NONE; |
| 2473 | #ifdef FOUR_WORD_PLT |
| 2474 | ret->plt_header_size = 16; |
| 2475 | ret->plt_entry_size = 16; |
| 2476 | #else |
| 2477 | ret->plt_header_size = 20; |
| 2478 | ret->plt_entry_size = 12; |
| 2479 | #endif |
| 2480 | ret->fix_v4bx = 0; |
| 2481 | ret->use_blx = 0; |
| 2482 | ret->vxworks_p = 0; |
| 2483 | ret->symbian_p = 0; |
| 2484 | ret->use_rel = 1; |
| 2485 | ret->sym_sec.abfd = NULL; |
| 2486 | ret->obfd = abfd; |
| 2487 | ret->tls_ldm_got.refcount = 0; |
| 2488 | |
| 2489 | return &ret->root.root; |
| 2490 | } |
| 2491 | |
| 2492 | /* Locate the Thumb encoded calling stub for NAME. */ |
| 2493 | |
| 2494 | static struct elf_link_hash_entry * |
| 2495 | find_thumb_glue (struct bfd_link_info *link_info, |
| 2496 | const char *name, |
| 2497 | char **error_message) |
| 2498 | { |
| 2499 | char *tmp_name; |
| 2500 | struct elf_link_hash_entry *hash; |
| 2501 | struct elf32_arm_link_hash_table *hash_table; |
| 2502 | |
| 2503 | /* We need a pointer to the armelf specific hash table. */ |
| 2504 | hash_table = elf32_arm_hash_table (link_info); |
| 2505 | |
| 2506 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
| 2507 | + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); |
| 2508 | |
| 2509 | BFD_ASSERT (tmp_name); |
| 2510 | |
| 2511 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); |
| 2512 | |
| 2513 | hash = elf_link_hash_lookup |
| 2514 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
| 2515 | |
| 2516 | if (hash == NULL) |
| 2517 | asprintf (error_message, _("unable to find THUMB glue '%s' for '%s'"), |
| 2518 | tmp_name, name); |
| 2519 | |
| 2520 | free (tmp_name); |
| 2521 | |
| 2522 | return hash; |
| 2523 | } |
| 2524 | |
| 2525 | /* Locate the ARM encoded calling stub for NAME. */ |
| 2526 | |
| 2527 | static struct elf_link_hash_entry * |
| 2528 | find_arm_glue (struct bfd_link_info *link_info, |
| 2529 | const char *name, |
| 2530 | char **error_message) |
| 2531 | { |
| 2532 | char *tmp_name; |
| 2533 | struct elf_link_hash_entry *myh; |
| 2534 | struct elf32_arm_link_hash_table *hash_table; |
| 2535 | |
| 2536 | /* We need a pointer to the elfarm specific hash table. */ |
| 2537 | hash_table = elf32_arm_hash_table (link_info); |
| 2538 | |
| 2539 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
| 2540 | + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); |
| 2541 | |
| 2542 | BFD_ASSERT (tmp_name); |
| 2543 | |
| 2544 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); |
| 2545 | |
| 2546 | myh = elf_link_hash_lookup |
| 2547 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
| 2548 | |
| 2549 | if (myh == NULL) |
| 2550 | asprintf (error_message, _("unable to find ARM glue '%s' for '%s'"), |
| 2551 | tmp_name, name); |
| 2552 | |
| 2553 | free (tmp_name); |
| 2554 | |
| 2555 | return myh; |
| 2556 | } |
| 2557 | |
| 2558 | /* ARM->Thumb glue (static images): |
| 2559 | |
| 2560 | .arm |
| 2561 | __func_from_arm: |
| 2562 | ldr r12, __func_addr |
| 2563 | bx r12 |
| 2564 | __func_addr: |
| 2565 | .word func @ behave as if you saw a ARM_32 reloc. |
| 2566 | |
| 2567 | (v5t static images) |
| 2568 | .arm |
| 2569 | __func_from_arm: |
| 2570 | ldr pc, __func_addr |
| 2571 | __func_addr: |
| 2572 | .word func @ behave as if you saw a ARM_32 reloc. |
| 2573 | |
| 2574 | (relocatable images) |
| 2575 | .arm |
| 2576 | __func_from_arm: |
| 2577 | ldr r12, __func_offset |
| 2578 | add r12, r12, pc |
| 2579 | bx r12 |
| 2580 | __func_offset: |
| 2581 | .word func - . |
| 2582 | */ |
| 2583 | |
| 2584 | #define ARM2THUMB_STATIC_GLUE_SIZE 12 |
| 2585 | static const insn32 a2t1_ldr_insn = 0xe59fc000; |
| 2586 | static const insn32 a2t2_bx_r12_insn = 0xe12fff1c; |
| 2587 | static const insn32 a2t3_func_addr_insn = 0x00000001; |
| 2588 | |
| 2589 | #define ARM2THUMB_V5_STATIC_GLUE_SIZE 8 |
| 2590 | static const insn32 a2t1v5_ldr_insn = 0xe51ff004; |
| 2591 | static const insn32 a2t2v5_func_addr_insn = 0x00000001; |
| 2592 | |
| 2593 | #define ARM2THUMB_PIC_GLUE_SIZE 16 |
| 2594 | static const insn32 a2t1p_ldr_insn = 0xe59fc004; |
| 2595 | static const insn32 a2t2p_add_pc_insn = 0xe08cc00f; |
| 2596 | static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c; |
| 2597 | |
| 2598 | /* Thumb->ARM: Thumb->(non-interworking aware) ARM |
| 2599 | |
| 2600 | .thumb .thumb |
| 2601 | .align 2 .align 2 |
| 2602 | __func_from_thumb: __func_from_thumb: |
| 2603 | bx pc push {r6, lr} |
| 2604 | nop ldr r6, __func_addr |
| 2605 | .arm mov lr, pc |
| 2606 | __func_change_to_arm: bx r6 |
| 2607 | b func .arm |
| 2608 | __func_back_to_thumb: |
| 2609 | ldmia r13! {r6, lr} |
| 2610 | bx lr |
| 2611 | __func_addr: |
| 2612 | .word func */ |
| 2613 | |
| 2614 | #define THUMB2ARM_GLUE_SIZE 8 |
| 2615 | static const insn16 t2a1_bx_pc_insn = 0x4778; |
| 2616 | static const insn16 t2a2_noop_insn = 0x46c0; |
| 2617 | static const insn32 t2a3_b_insn = 0xea000000; |
| 2618 | |
| 2619 | #define VFP11_ERRATUM_VENEER_SIZE 8 |
| 2620 | |
| 2621 | #ifndef ELFARM_NABI_C_INCLUDED |
| 2622 | bfd_boolean |
| 2623 | bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info) |
| 2624 | { |
| 2625 | asection * s; |
| 2626 | bfd_byte * foo; |
| 2627 | struct elf32_arm_link_hash_table * globals; |
| 2628 | |
| 2629 | globals = elf32_arm_hash_table (info); |
| 2630 | |
| 2631 | BFD_ASSERT (globals != NULL); |
| 2632 | |
| 2633 | if (globals->arm_glue_size != 0) |
| 2634 | { |
| 2635 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); |
| 2636 | |
| 2637 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, |
| 2638 | ARM2THUMB_GLUE_SECTION_NAME); |
| 2639 | |
| 2640 | BFD_ASSERT (s != NULL); |
| 2641 | |
| 2642 | foo = bfd_alloc (globals->bfd_of_glue_owner, globals->arm_glue_size); |
| 2643 | |
| 2644 | BFD_ASSERT (s->size == globals->arm_glue_size); |
| 2645 | s->contents = foo; |
| 2646 | } |
| 2647 | |
| 2648 | if (globals->thumb_glue_size != 0) |
| 2649 | { |
| 2650 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); |
| 2651 | |
| 2652 | s = bfd_get_section_by_name |
| 2653 | (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); |
| 2654 | |
| 2655 | BFD_ASSERT (s != NULL); |
| 2656 | |
| 2657 | foo = bfd_alloc (globals->bfd_of_glue_owner, globals->thumb_glue_size); |
| 2658 | |
| 2659 | BFD_ASSERT (s->size == globals->thumb_glue_size); |
| 2660 | s->contents = foo; |
| 2661 | } |
| 2662 | |
| 2663 | if (globals->vfp11_erratum_glue_size != 0) |
| 2664 | { |
| 2665 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); |
| 2666 | |
| 2667 | s = bfd_get_section_by_name |
| 2668 | (globals->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME); |
| 2669 | |
| 2670 | BFD_ASSERT (s != NULL); |
| 2671 | |
| 2672 | foo = bfd_alloc (globals->bfd_of_glue_owner, |
| 2673 | globals->vfp11_erratum_glue_size); |
| 2674 | |
| 2675 | BFD_ASSERT (s->size == globals->vfp11_erratum_glue_size); |
| 2676 | s->contents = foo; |
| 2677 | } |
| 2678 | |
| 2679 | return TRUE; |
| 2680 | } |
| 2681 | |
| 2682 | /* Allocate space and symbols for calling a Thumb function from Arm mode. |
| 2683 | returns the symbol identifying teh stub. */ |
| 2684 | static struct elf_link_hash_entry * |
| 2685 | record_arm_to_thumb_glue (struct bfd_link_info * link_info, |
| 2686 | struct elf_link_hash_entry * h) |
| 2687 | { |
| 2688 | const char * name = h->root.root.string; |
| 2689 | asection * s; |
| 2690 | char * tmp_name; |
| 2691 | struct elf_link_hash_entry * myh; |
| 2692 | struct bfd_link_hash_entry * bh; |
| 2693 | struct elf32_arm_link_hash_table * globals; |
| 2694 | bfd_vma val; |
| 2695 | bfd_size_type size; |
| 2696 | |
| 2697 | globals = elf32_arm_hash_table (link_info); |
| 2698 | |
| 2699 | BFD_ASSERT (globals != NULL); |
| 2700 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); |
| 2701 | |
| 2702 | s = bfd_get_section_by_name |
| 2703 | (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); |
| 2704 | |
| 2705 | BFD_ASSERT (s != NULL); |
| 2706 | |
| 2707 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); |
| 2708 | |
| 2709 | BFD_ASSERT (tmp_name); |
| 2710 | |
| 2711 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); |
| 2712 | |
| 2713 | myh = elf_link_hash_lookup |
| 2714 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); |
| 2715 | |
| 2716 | if (myh != NULL) |
| 2717 | { |
| 2718 | /* We've already seen this guy. */ |
| 2719 | free (tmp_name); |
| 2720 | return myh; |
| 2721 | } |
| 2722 | |
| 2723 | /* The only trick here is using hash_table->arm_glue_size as the value. |
| 2724 | Even though the section isn't allocated yet, this is where we will be |
| 2725 | putting it. */ |
| 2726 | bh = NULL; |
| 2727 | val = globals->arm_glue_size + 1; |
| 2728 | _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, |
| 2729 | tmp_name, BSF_GLOBAL, s, val, |
| 2730 | NULL, TRUE, FALSE, &bh); |
| 2731 | |
| 2732 | myh = (struct elf_link_hash_entry *) bh; |
| 2733 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); |
| 2734 | myh->forced_local = 1; |
| 2735 | |
| 2736 | free (tmp_name); |
| 2737 | |
| 2738 | if (link_info->shared || globals->root.is_relocatable_executable |
| 2739 | || globals->pic_veneer) |
| 2740 | size = ARM2THUMB_PIC_GLUE_SIZE; |
| 2741 | else if (globals->use_blx) |
| 2742 | size = ARM2THUMB_V5_STATIC_GLUE_SIZE; |
| 2743 | else |
| 2744 | size = ARM2THUMB_STATIC_GLUE_SIZE; |
| 2745 | |
| 2746 | s->size += size; |
| 2747 | globals->arm_glue_size += size; |
| 2748 | |
| 2749 | return myh; |
| 2750 | } |
| 2751 | |
| 2752 | static void |
| 2753 | record_thumb_to_arm_glue (struct bfd_link_info *link_info, |
| 2754 | struct elf_link_hash_entry *h) |
| 2755 | { |
| 2756 | const char *name = h->root.root.string; |
| 2757 | asection *s; |
| 2758 | char *tmp_name; |
| 2759 | struct elf_link_hash_entry *myh; |
| 2760 | struct bfd_link_hash_entry *bh; |
| 2761 | struct elf32_arm_link_hash_table *hash_table; |
| 2762 | bfd_vma val; |
| 2763 | |
| 2764 | hash_table = elf32_arm_hash_table (link_info); |
| 2765 | |
| 2766 | BFD_ASSERT (hash_table != NULL); |
| 2767 | BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL); |
| 2768 | |
| 2769 | s = bfd_get_section_by_name |
| 2770 | (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); |
| 2771 | |
| 2772 | BFD_ASSERT (s != NULL); |
| 2773 | |
| 2774 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
| 2775 | + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); |
| 2776 | |
| 2777 | BFD_ASSERT (tmp_name); |
| 2778 | |
| 2779 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); |
| 2780 | |
| 2781 | myh = elf_link_hash_lookup |
| 2782 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
| 2783 | |
| 2784 | if (myh != NULL) |
| 2785 | { |
| 2786 | /* We've already seen this guy. */ |
| 2787 | free (tmp_name); |
| 2788 | return; |
| 2789 | } |
| 2790 | |
| 2791 | bh = NULL; |
| 2792 | val = hash_table->thumb_glue_size + 1; |
| 2793 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, |
| 2794 | tmp_name, BSF_GLOBAL, s, val, |
| 2795 | NULL, TRUE, FALSE, &bh); |
| 2796 | |
| 2797 | /* If we mark it 'Thumb', the disassembler will do a better job. */ |
| 2798 | myh = (struct elf_link_hash_entry *) bh; |
| 2799 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC); |
| 2800 | myh->forced_local = 1; |
| 2801 | |
| 2802 | free (tmp_name); |
| 2803 | |
| 2804 | #define CHANGE_TO_ARM "__%s_change_to_arm" |
| 2805 | #define BACK_FROM_ARM "__%s_back_from_arm" |
| 2806 | |
| 2807 | /* Allocate another symbol to mark where we switch to Arm mode. */ |
| 2808 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
| 2809 | + strlen (CHANGE_TO_ARM) + 1); |
| 2810 | |
| 2811 | BFD_ASSERT (tmp_name); |
| 2812 | |
| 2813 | sprintf (tmp_name, CHANGE_TO_ARM, name); |
| 2814 | |
| 2815 | bh = NULL; |
| 2816 | val = hash_table->thumb_glue_size + 4, |
| 2817 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, |
| 2818 | tmp_name, BSF_LOCAL, s, val, |
| 2819 | NULL, TRUE, FALSE, &bh); |
| 2820 | |
| 2821 | free (tmp_name); |
| 2822 | |
| 2823 | s->size += THUMB2ARM_GLUE_SIZE; |
| 2824 | hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE; |
| 2825 | |
| 2826 | return; |
| 2827 | } |
| 2828 | |
| 2829 | |
| 2830 | /* Add an entry to the code/data map for section SEC. */ |
| 2831 | |
| 2832 | static void |
| 2833 | elf32_arm_section_map_add (asection *sec, char type, bfd_vma vma) |
| 2834 | { |
| 2835 | struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec); |
| 2836 | unsigned int newidx; |
| 2837 | |
| 2838 | if (sec_data->map == NULL) |
| 2839 | { |
| 2840 | sec_data->map = bfd_malloc (sizeof (elf32_arm_section_map)); |
| 2841 | sec_data->mapcount = 0; |
| 2842 | sec_data->mapsize = 1; |
| 2843 | } |
| 2844 | |
| 2845 | newidx = sec_data->mapcount++; |
| 2846 | |
| 2847 | if (sec_data->mapcount > sec_data->mapsize) |
| 2848 | { |
| 2849 | sec_data->mapsize *= 2; |
| 2850 | sec_data->map = bfd_realloc (sec_data->map, sec_data->mapsize |
| 2851 | * sizeof (elf32_arm_section_map)); |
| 2852 | } |
| 2853 | |
| 2854 | sec_data->map[newidx].vma = vma; |
| 2855 | sec_data->map[newidx].type = type; |
| 2856 | } |
| 2857 | |
| 2858 | |
| 2859 | /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode |
| 2860 | veneers are handled for now. */ |
| 2861 | |
| 2862 | static bfd_vma |
| 2863 | record_vfp11_erratum_veneer (struct bfd_link_info *link_info, |
| 2864 | elf32_vfp11_erratum_list *branch, |
| 2865 | bfd *branch_bfd, |
| 2866 | asection *branch_sec, |
| 2867 | unsigned int offset) |
| 2868 | { |
| 2869 | asection *s; |
| 2870 | struct elf32_arm_link_hash_table *hash_table; |
| 2871 | char *tmp_name; |
| 2872 | struct elf_link_hash_entry *myh; |
| 2873 | struct bfd_link_hash_entry *bh; |
| 2874 | bfd_vma val; |
| 2875 | struct _arm_elf_section_data *sec_data; |
| 2876 | int errcount; |
| 2877 | elf32_vfp11_erratum_list *newerr; |
| 2878 | |
| 2879 | hash_table = elf32_arm_hash_table (link_info); |
| 2880 | |
| 2881 | BFD_ASSERT (hash_table != NULL); |
| 2882 | BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL); |
| 2883 | |
| 2884 | s = bfd_get_section_by_name |
| 2885 | (hash_table->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME); |
| 2886 | |
| 2887 | sec_data = elf32_arm_section_data (s); |
| 2888 | |
| 2889 | BFD_ASSERT (s != NULL); |
| 2890 | |
| 2891 | tmp_name = bfd_malloc ((bfd_size_type) strlen |
| 2892 | (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10); |
| 2893 | |
| 2894 | BFD_ASSERT (tmp_name); |
| 2895 | |
| 2896 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME, |
| 2897 | hash_table->num_vfp11_fixes); |
| 2898 | |
| 2899 | myh = elf_link_hash_lookup |
| 2900 | (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE); |
| 2901 | |
| 2902 | BFD_ASSERT (myh == NULL); |
| 2903 | |
| 2904 | bh = NULL; |
| 2905 | val = hash_table->vfp11_erratum_glue_size; |
| 2906 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, |
| 2907 | tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val, |
| 2908 | NULL, TRUE, FALSE, &bh); |
| 2909 | |
| 2910 | myh = (struct elf_link_hash_entry *) bh; |
| 2911 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); |
| 2912 | myh->forced_local = 1; |
| 2913 | |
| 2914 | /* Link veneer back to calling location. */ |
| 2915 | errcount = ++(sec_data->erratumcount); |
| 2916 | newerr = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list)); |
| 2917 | |
| 2918 | newerr->type = VFP11_ERRATUM_ARM_VENEER; |
| 2919 | newerr->vma = -1; |
| 2920 | newerr->u.v.branch = branch; |
| 2921 | newerr->u.v.id = hash_table->num_vfp11_fixes; |
| 2922 | branch->u.b.veneer = newerr; |
| 2923 | |
| 2924 | newerr->next = sec_data->erratumlist; |
| 2925 | sec_data->erratumlist = newerr; |
| 2926 | |
| 2927 | /* A symbol for the return from the veneer. */ |
| 2928 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r", |
| 2929 | hash_table->num_vfp11_fixes); |
| 2930 | |
| 2931 | myh = elf_link_hash_lookup |
| 2932 | (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE); |
| 2933 | |
| 2934 | if (myh != NULL) |
| 2935 | abort (); |
| 2936 | |
| 2937 | bh = NULL; |
| 2938 | val = offset + 4; |
| 2939 | _bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL, |
| 2940 | branch_sec, val, NULL, TRUE, FALSE, &bh); |
| 2941 | |
| 2942 | myh = (struct elf_link_hash_entry *) bh; |
| 2943 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); |
| 2944 | myh->forced_local = 1; |
| 2945 | |
| 2946 | free (tmp_name); |
| 2947 | |
| 2948 | /* Generate a mapping symbol for the veneer section, and explicitly add an |
| 2949 | entry for that symbol to the code/data map for the section. */ |
| 2950 | if (hash_table->vfp11_erratum_glue_size == 0) |
| 2951 | { |
| 2952 | bh = NULL; |
| 2953 | /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it |
| 2954 | ever requires this erratum fix. */ |
| 2955 | _bfd_generic_link_add_one_symbol (link_info, |
| 2956 | hash_table->bfd_of_glue_owner, "$a", |
| 2957 | BSF_LOCAL, s, 0, NULL, |
| 2958 | TRUE, FALSE, &bh); |
| 2959 | |
| 2960 | myh = (struct elf_link_hash_entry *) bh; |
| 2961 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); |
| 2962 | myh->forced_local = 1; |
| 2963 | |
| 2964 | /* The elf32_arm_init_maps function only cares about symbols from input |
| 2965 | BFDs. We must make a note of this generated mapping symbol |
| 2966 | ourselves so that code byteswapping works properly in |
| 2967 | elf32_arm_write_section. */ |
| 2968 | elf32_arm_section_map_add (s, 'a', 0); |
| 2969 | } |
| 2970 | |
| 2971 | s->size += VFP11_ERRATUM_VENEER_SIZE; |
| 2972 | hash_table->vfp11_erratum_glue_size += VFP11_ERRATUM_VENEER_SIZE; |
| 2973 | hash_table->num_vfp11_fixes++; |
| 2974 | |
| 2975 | /* The offset of the veneer. */ |
| 2976 | return val; |
| 2977 | } |
| 2978 | |
| 2979 | /* Add the glue sections to ABFD. This function is called from the |
| 2980 | linker scripts in ld/emultempl/{armelf}.em. */ |
| 2981 | |
| 2982 | bfd_boolean |
| 2983 | bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd, |
| 2984 | struct bfd_link_info *info) |
| 2985 | { |
| 2986 | flagword flags; |
| 2987 | asection *sec; |
| 2988 | |
| 2989 | /* If we are only performing a partial |
| 2990 | link do not bother adding the glue. */ |
| 2991 | if (info->relocatable) |
| 2992 | return TRUE; |
| 2993 | |
| 2994 | sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME); |
| 2995 | |
| 2996 | if (sec == NULL) |
| 2997 | { |
| 2998 | /* Note: we do not include the flag SEC_LINKER_CREATED, as this |
| 2999 | will prevent elf_link_input_bfd() from processing the contents |
| 3000 | of this section. */ |
| 3001 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 3002 | | SEC_CODE | SEC_READONLY); |
| 3003 | |
| 3004 | sec = bfd_make_section_with_flags (abfd, |
| 3005 | ARM2THUMB_GLUE_SECTION_NAME, |
| 3006 | flags); |
| 3007 | |
| 3008 | if (sec == NULL |
| 3009 | || !bfd_set_section_alignment (abfd, sec, 2)) |
| 3010 | return FALSE; |
| 3011 | |
| 3012 | /* Set the gc mark to prevent the section from being removed by garbage |
| 3013 | collection, despite the fact that no relocs refer to this section. */ |
| 3014 | sec->gc_mark = 1; |
| 3015 | } |
| 3016 | |
| 3017 | sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME); |
| 3018 | |
| 3019 | if (sec == NULL) |
| 3020 | { |
| 3021 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 3022 | | SEC_CODE | SEC_READONLY); |
| 3023 | |
| 3024 | sec = bfd_make_section_with_flags (abfd, |
| 3025 | THUMB2ARM_GLUE_SECTION_NAME, |
| 3026 | flags); |
| 3027 | |
| 3028 | if (sec == NULL |
| 3029 | || !bfd_set_section_alignment (abfd, sec, 2)) |
| 3030 | return FALSE; |
| 3031 | |
| 3032 | sec->gc_mark = 1; |
| 3033 | } |
| 3034 | |
| 3035 | sec = bfd_get_section_by_name (abfd, VFP11_ERRATUM_VENEER_SECTION_NAME); |
| 3036 | |
| 3037 | if (sec == NULL) |
| 3038 | { |
| 3039 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 3040 | | SEC_CODE | SEC_READONLY); |
| 3041 | |
| 3042 | sec = bfd_make_section_with_flags (abfd, |
| 3043 | VFP11_ERRATUM_VENEER_SECTION_NAME, |
| 3044 | flags); |
| 3045 | |
| 3046 | if (sec == NULL |
| 3047 | || !bfd_set_section_alignment (abfd, sec, 2)) |
| 3048 | return FALSE; |
| 3049 | |
| 3050 | sec->gc_mark = 1; |
| 3051 | } |
| 3052 | |
| 3053 | return TRUE; |
| 3054 | } |
| 3055 | |
| 3056 | /* Select a BFD to be used to hold the sections used by the glue code. |
| 3057 | This function is called from the linker scripts in ld/emultempl/ |
| 3058 | {armelf/pe}.em */ |
| 3059 | |
| 3060 | bfd_boolean |
| 3061 | bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info) |
| 3062 | { |
| 3063 | struct elf32_arm_link_hash_table *globals; |
| 3064 | |
| 3065 | /* If we are only performing a partial link |
| 3066 | do not bother getting a bfd to hold the glue. */ |
| 3067 | if (info->relocatable) |
| 3068 | return TRUE; |
| 3069 | |
| 3070 | /* Make sure we don't attach the glue sections to a dynamic object. */ |
| 3071 | BFD_ASSERT (!(abfd->flags & DYNAMIC)); |
| 3072 | |
| 3073 | globals = elf32_arm_hash_table (info); |
| 3074 | |
| 3075 | BFD_ASSERT (globals != NULL); |
| 3076 | |
| 3077 | if (globals->bfd_of_glue_owner != NULL) |
| 3078 | return TRUE; |
| 3079 | |
| 3080 | /* Save the bfd for later use. */ |
| 3081 | globals->bfd_of_glue_owner = abfd; |
| 3082 | |
| 3083 | return TRUE; |
| 3084 | } |
| 3085 | |
| 3086 | static void check_use_blx(struct elf32_arm_link_hash_table *globals) |
| 3087 | { |
| 3088 | if (bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, |
| 3089 | Tag_CPU_arch) > 2) |
| 3090 | globals->use_blx = 1; |
| 3091 | } |
| 3092 | |
| 3093 | bfd_boolean |
| 3094 | bfd_elf32_arm_process_before_allocation (bfd *abfd, |
| 3095 | struct bfd_link_info *link_info) |
| 3096 | { |
| 3097 | Elf_Internal_Shdr *symtab_hdr; |
| 3098 | Elf_Internal_Rela *internal_relocs = NULL; |
| 3099 | Elf_Internal_Rela *irel, *irelend; |
| 3100 | bfd_byte *contents = NULL; |
| 3101 | |
| 3102 | asection *sec; |
| 3103 | struct elf32_arm_link_hash_table *globals; |
| 3104 | |
| 3105 | /* If we are only performing a partial link do not bother |
| 3106 | to construct any glue. */ |
| 3107 | if (link_info->relocatable) |
| 3108 | return TRUE; |
| 3109 | |
| 3110 | /* Here we have a bfd that is to be included on the link. We have a hook |
| 3111 | to do reloc rummaging, before section sizes are nailed down. */ |
| 3112 | globals = elf32_arm_hash_table (link_info); |
| 3113 | check_use_blx (globals); |
| 3114 | |
| 3115 | BFD_ASSERT (globals != NULL); |
| 3116 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); |
| 3117 | |
| 3118 | if (globals->byteswap_code && !bfd_big_endian (abfd)) |
| 3119 | { |
| 3120 | _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."), |
| 3121 | abfd); |
| 3122 | return FALSE; |
| 3123 | } |
| 3124 | |
| 3125 | /* Rummage around all the relocs and map the glue vectors. */ |
| 3126 | sec = abfd->sections; |
| 3127 | |
| 3128 | if (sec == NULL) |
| 3129 | return TRUE; |
| 3130 | |
| 3131 | for (; sec != NULL; sec = sec->next) |
| 3132 | { |
| 3133 | if (sec->reloc_count == 0) |
| 3134 | continue; |
| 3135 | |
| 3136 | if ((sec->flags & SEC_EXCLUDE) != 0) |
| 3137 | continue; |
| 3138 | |
| 3139 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 3140 | |
| 3141 | /* Load the relocs. */ |
| 3142 | internal_relocs |
| 3143 | = _bfd_elf_link_read_relocs (abfd, sec, (void *) NULL, |
| 3144 | (Elf_Internal_Rela *) NULL, FALSE); |
| 3145 | |
| 3146 | if (internal_relocs == NULL) |
| 3147 | goto error_return; |
| 3148 | |
| 3149 | irelend = internal_relocs + sec->reloc_count; |
| 3150 | for (irel = internal_relocs; irel < irelend; irel++) |
| 3151 | { |
| 3152 | long r_type; |
| 3153 | unsigned long r_index; |
| 3154 | |
| 3155 | struct elf_link_hash_entry *h; |
| 3156 | |
| 3157 | r_type = ELF32_R_TYPE (irel->r_info); |
| 3158 | r_index = ELF32_R_SYM (irel->r_info); |
| 3159 | |
| 3160 | /* These are the only relocation types we care about. */ |
| 3161 | if ( r_type != R_ARM_PC24 |
| 3162 | && r_type != R_ARM_PLT32 |
| 3163 | && r_type != R_ARM_CALL |
| 3164 | && r_type != R_ARM_JUMP24 |
| 3165 | && r_type != R_ARM_THM_CALL) |
| 3166 | continue; |
| 3167 | |
| 3168 | /* Get the section contents if we haven't done so already. */ |
| 3169 | if (contents == NULL) |
| 3170 | { |
| 3171 | /* Get cached copy if it exists. */ |
| 3172 | if (elf_section_data (sec)->this_hdr.contents != NULL) |
| 3173 | contents = elf_section_data (sec)->this_hdr.contents; |
| 3174 | else |
| 3175 | { |
| 3176 | /* Go get them off disk. */ |
| 3177 | if (! bfd_malloc_and_get_section (abfd, sec, &contents)) |
| 3178 | goto error_return; |
| 3179 | } |
| 3180 | } |
| 3181 | |
| 3182 | /* If the relocation is not against a symbol it cannot concern us. */ |
| 3183 | h = NULL; |
| 3184 | |
| 3185 | /* We don't care about local symbols. */ |
| 3186 | if (r_index < symtab_hdr->sh_info) |
| 3187 | continue; |
| 3188 | |
| 3189 | /* This is an external symbol. */ |
| 3190 | r_index -= symtab_hdr->sh_info; |
| 3191 | h = (struct elf_link_hash_entry *) |
| 3192 | elf_sym_hashes (abfd)[r_index]; |
| 3193 | |
| 3194 | /* If the relocation is against a static symbol it must be within |
| 3195 | the current section and so cannot be a cross ARM/Thumb relocation. */ |
| 3196 | if (h == NULL) |
| 3197 | continue; |
| 3198 | |
| 3199 | /* If the call will go through a PLT entry then we do not need |
| 3200 | glue. */ |
| 3201 | if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1) |
| 3202 | continue; |
| 3203 | |
| 3204 | switch (r_type) |
| 3205 | { |
| 3206 | case R_ARM_PC24: |
| 3207 | case R_ARM_PLT32: |
| 3208 | case R_ARM_CALL: |
| 3209 | case R_ARM_JUMP24: |
| 3210 | /* This one is a call from arm code. We need to look up |
| 3211 | the target of the call. If it is a thumb target, we |
| 3212 | insert glue. */ |
| 3213 | if (ELF_ST_TYPE(h->type) == STT_ARM_TFUNC |
| 3214 | && !(r_type == R_ARM_CALL && globals->use_blx)) |
| 3215 | record_arm_to_thumb_glue (link_info, h); |
| 3216 | break; |
| 3217 | |
| 3218 | case R_ARM_THM_CALL: |
| 3219 | /* This one is a call from thumb code. We look |
| 3220 | up the target of the call. If it is not a thumb |
| 3221 | target, we insert glue. */ |
| 3222 | if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC && !globals->use_blx |
| 3223 | && h->root.type != bfd_link_hash_undefweak) |
| 3224 | record_thumb_to_arm_glue (link_info, h); |
| 3225 | break; |
| 3226 | |
| 3227 | default: |
| 3228 | abort (); |
| 3229 | } |
| 3230 | } |
| 3231 | |
| 3232 | if (contents != NULL |
| 3233 | && elf_section_data (sec)->this_hdr.contents != contents) |
| 3234 | free (contents); |
| 3235 | contents = NULL; |
| 3236 | |
| 3237 | if (internal_relocs != NULL |
| 3238 | && elf_section_data (sec)->relocs != internal_relocs) |
| 3239 | free (internal_relocs); |
| 3240 | internal_relocs = NULL; |
| 3241 | } |
| 3242 | |
| 3243 | return TRUE; |
| 3244 | |
| 3245 | error_return: |
| 3246 | if (contents != NULL |
| 3247 | && elf_section_data (sec)->this_hdr.contents != contents) |
| 3248 | free (contents); |
| 3249 | if (internal_relocs != NULL |
| 3250 | && elf_section_data (sec)->relocs != internal_relocs) |
| 3251 | free (internal_relocs); |
| 3252 | |
| 3253 | return FALSE; |
| 3254 | } |
| 3255 | #endif |
| 3256 | |
| 3257 | |
| 3258 | /* Initialise maps of ARM/Thumb/data for input BFDs. */ |
| 3259 | |
| 3260 | void |
| 3261 | bfd_elf32_arm_init_maps (bfd *abfd) |
| 3262 | { |
| 3263 | Elf_Internal_Sym *isymbuf; |
| 3264 | Elf_Internal_Shdr *hdr; |
| 3265 | unsigned int i, localsyms; |
| 3266 | |
| 3267 | if ((abfd->flags & DYNAMIC) != 0) |
| 3268 | return; |
| 3269 | |
| 3270 | hdr = &elf_tdata (abfd)->symtab_hdr; |
| 3271 | localsyms = hdr->sh_info; |
| 3272 | |
| 3273 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field |
| 3274 | should contain the number of local symbols, which should come before any |
| 3275 | global symbols. Mapping symbols are always local. */ |
| 3276 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, |
| 3277 | NULL); |
| 3278 | |
| 3279 | /* No internal symbols read? Skip this BFD. */ |
| 3280 | if (isymbuf == NULL) |
| 3281 | return; |
| 3282 | |
| 3283 | for (i = 0; i < localsyms; i++) |
| 3284 | { |
| 3285 | Elf_Internal_Sym *isym = &isymbuf[i]; |
| 3286 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 3287 | const char *name; |
| 3288 | |
| 3289 | if (sec != NULL |
| 3290 | && ELF_ST_BIND (isym->st_info) == STB_LOCAL) |
| 3291 | { |
| 3292 | name = bfd_elf_string_from_elf_section (abfd, |
| 3293 | hdr->sh_link, isym->st_name); |
| 3294 | |
| 3295 | if (bfd_is_arm_special_symbol_name (name, |
| 3296 | BFD_ARM_SPECIAL_SYM_TYPE_MAP)) |
| 3297 | elf32_arm_section_map_add (sec, name[1], isym->st_value); |
| 3298 | } |
| 3299 | } |
| 3300 | } |
| 3301 | |
| 3302 | |
| 3303 | void |
| 3304 | bfd_elf32_arm_set_vfp11_fix (bfd *obfd, struct bfd_link_info *link_info) |
| 3305 | { |
| 3306 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); |
| 3307 | obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd); |
| 3308 | |
| 3309 | /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */ |
| 3310 | if (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V7) |
| 3311 | { |
| 3312 | switch (globals->vfp11_fix) |
| 3313 | { |
| 3314 | case BFD_ARM_VFP11_FIX_DEFAULT: |
| 3315 | case BFD_ARM_VFP11_FIX_NONE: |
| 3316 | globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; |
| 3317 | break; |
| 3318 | |
| 3319 | default: |
| 3320 | /* Give a warning, but do as the user requests anyway. */ |
| 3321 | (*_bfd_error_handler) (_("%B: warning: selected VFP11 erratum " |
| 3322 | "workaround is not necessary for target architecture"), obfd); |
| 3323 | } |
| 3324 | } |
| 3325 | else if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_DEFAULT) |
| 3326 | /* For earlier architectures, we might need the workaround, but do not |
| 3327 | enable it by default. If users is running with broken hardware, they |
| 3328 | must enable the erratum fix explicitly. */ |
| 3329 | globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; |
| 3330 | } |
| 3331 | |
| 3332 | |
| 3333 | enum bfd_arm_vfp11_pipe { |
| 3334 | VFP11_FMAC, |
| 3335 | VFP11_LS, |
| 3336 | VFP11_DS, |
| 3337 | VFP11_BAD |
| 3338 | }; |
| 3339 | |
| 3340 | /* Return a VFP register number. This is encoded as RX:X for single-precision |
| 3341 | registers, or X:RX for double-precision registers, where RX is the group of |
| 3342 | four bits in the instruction encoding and X is the single extension bit. |
| 3343 | RX and X fields are specified using their lowest (starting) bit. The return |
| 3344 | value is: |
| 3345 | |
| 3346 | 0...31: single-precision registers s0...s31 |
| 3347 | 32...63: double-precision registers d0...d31. |
| 3348 | |
| 3349 | Although X should be zero for VFP11 (encoding d0...d15 only), we might |
| 3350 | encounter VFP3 instructions, so we allow the full range for DP registers. */ |
| 3351 | |
| 3352 | static unsigned int |
| 3353 | bfd_arm_vfp11_regno (unsigned int insn, bfd_boolean is_double, unsigned int rx, |
| 3354 | unsigned int x) |
| 3355 | { |
| 3356 | if (is_double) |
| 3357 | return (((insn >> rx) & 0xf) | (((insn >> x) & 1) << 4)) + 32; |
| 3358 | else |
| 3359 | return (((insn >> rx) & 0xf) << 1) | ((insn >> x) & 1); |
| 3360 | } |
| 3361 | |
| 3362 | /* Set bits in *WMASK according to a register number REG as encoded by |
| 3363 | bfd_arm_vfp11_regno(). Ignore d16-d31. */ |
| 3364 | |
| 3365 | static void |
| 3366 | bfd_arm_vfp11_write_mask (unsigned int *wmask, unsigned int reg) |
| 3367 | { |
| 3368 | if (reg < 32) |
| 3369 | *wmask |= 1 << reg; |
| 3370 | else if (reg < 48) |
| 3371 | *wmask |= 3 << ((reg - 32) * 2); |
| 3372 | } |
| 3373 | |
| 3374 | /* Return TRUE if WMASK overwrites anything in REGS. */ |
| 3375 | |
| 3376 | static bfd_boolean |
| 3377 | bfd_arm_vfp11_antidependency (unsigned int wmask, int *regs, int numregs) |
| 3378 | { |
| 3379 | int i; |
| 3380 | |
| 3381 | for (i = 0; i < numregs; i++) |
| 3382 | { |
| 3383 | unsigned int reg = regs[i]; |
| 3384 | |
| 3385 | if (reg < 32 && (wmask & (1 << reg)) != 0) |
| 3386 | return TRUE; |
| 3387 | |
| 3388 | reg -= 32; |
| 3389 | |
| 3390 | if (reg >= 16) |
| 3391 | continue; |
| 3392 | |
| 3393 | if ((wmask & (3 << (reg * 2))) != 0) |
| 3394 | return TRUE; |
| 3395 | } |
| 3396 | |
| 3397 | return FALSE; |
| 3398 | } |
| 3399 | |
| 3400 | /* In this function, we're interested in two things: finding input registers |
| 3401 | for VFP data-processing instructions, and finding the set of registers which |
| 3402 | arbitrary VFP instructions may write to. We use a 32-bit unsigned int to |
| 3403 | hold the written set, so FLDM etc. are easy to deal with (we're only |
| 3404 | interested in 32 SP registers or 16 dp registers, due to the VFP version |
| 3405 | implemented by the chip in question). DP registers are marked by setting |
| 3406 | both SP registers in the write mask). */ |
| 3407 | |
| 3408 | static enum bfd_arm_vfp11_pipe |
| 3409 | bfd_arm_vfp11_insn_decode (unsigned int insn, unsigned int *destmask, int *regs, |
| 3410 | int *numregs) |
| 3411 | { |
| 3412 | enum bfd_arm_vfp11_pipe pipe = VFP11_BAD; |
| 3413 | bfd_boolean is_double = ((insn & 0xf00) == 0xb00) ? 1 : 0; |
| 3414 | |
| 3415 | if ((insn & 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */ |
| 3416 | { |
| 3417 | unsigned int pqrs; |
| 3418 | unsigned int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22); |
| 3419 | unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5); |
| 3420 | |
| 3421 | pqrs = ((insn & 0x00800000) >> 20) |
| 3422 | | ((insn & 0x00300000) >> 19) |
| 3423 | | ((insn & 0x00000040) >> 6); |
| 3424 | |
| 3425 | switch (pqrs) |
| 3426 | { |
| 3427 | case 0: /* fmac[sd]. */ |
| 3428 | case 1: /* fnmac[sd]. */ |
| 3429 | case 2: /* fmsc[sd]. */ |
| 3430 | case 3: /* fnmsc[sd]. */ |
| 3431 | pipe = VFP11_FMAC; |
| 3432 | bfd_arm_vfp11_write_mask (destmask, fd); |
| 3433 | regs[0] = fd; |
| 3434 | regs[1] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */ |
| 3435 | regs[2] = fm; |
| 3436 | *numregs = 3; |
| 3437 | break; |
| 3438 | |
| 3439 | case 4: /* fmul[sd]. */ |
| 3440 | case 5: /* fnmul[sd]. */ |
| 3441 | case 6: /* fadd[sd]. */ |
| 3442 | case 7: /* fsub[sd]. */ |
| 3443 | pipe = VFP11_FMAC; |
| 3444 | goto vfp_binop; |
| 3445 | |
| 3446 | case 8: /* fdiv[sd]. */ |
| 3447 | pipe = VFP11_DS; |
| 3448 | vfp_binop: |
| 3449 | bfd_arm_vfp11_write_mask (destmask, fd); |
| 3450 | regs[0] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */ |
| 3451 | regs[1] = fm; |
| 3452 | *numregs = 2; |
| 3453 | break; |
| 3454 | |
| 3455 | case 15: /* extended opcode. */ |
| 3456 | { |
| 3457 | unsigned int extn = ((insn >> 15) & 0x1e) |
| 3458 | | ((insn >> 7) & 1); |
| 3459 | |
| 3460 | switch (extn) |
| 3461 | { |
| 3462 | case 0: /* fcpy[sd]. */ |
| 3463 | case 1: /* fabs[sd]. */ |
| 3464 | case 2: /* fneg[sd]. */ |
| 3465 | case 8: /* fcmp[sd]. */ |
| 3466 | case 9: /* fcmpe[sd]. */ |
| 3467 | case 10: /* fcmpz[sd]. */ |
| 3468 | case 11: /* fcmpez[sd]. */ |
| 3469 | case 16: /* fuito[sd]. */ |
| 3470 | case 17: /* fsito[sd]. */ |
| 3471 | case 24: /* ftoui[sd]. */ |
| 3472 | case 25: /* ftouiz[sd]. */ |
| 3473 | case 26: /* ftosi[sd]. */ |
| 3474 | case 27: /* ftosiz[sd]. */ |
| 3475 | /* These instructions will not bounce due to underflow. */ |
| 3476 | *numregs = 0; |
| 3477 | pipe = VFP11_FMAC; |
| 3478 | break; |
| 3479 | |
| 3480 | case 3: /* fsqrt[sd]. */ |
| 3481 | /* fsqrt cannot underflow, but it can (perhaps) overwrite |
| 3482 | registers to cause the erratum in previous instructions. */ |
| 3483 | bfd_arm_vfp11_write_mask (destmask, fd); |
| 3484 | pipe = VFP11_DS; |
| 3485 | break; |
| 3486 | |
| 3487 | case 15: /* fcvt{ds,sd}. */ |
| 3488 | { |
| 3489 | int rnum = 0; |
| 3490 | |
| 3491 | bfd_arm_vfp11_write_mask (destmask, fd); |
| 3492 | |
| 3493 | /* Only FCVTSD can underflow. */ |
| 3494 | if ((insn & 0x100) != 0) |
| 3495 | regs[rnum++] = fm; |
| 3496 | |
| 3497 | *numregs = rnum; |
| 3498 | |
| 3499 | pipe = VFP11_FMAC; |
| 3500 | } |
| 3501 | break; |
| 3502 | |
| 3503 | default: |
| 3504 | return VFP11_BAD; |
| 3505 | } |
| 3506 | } |
| 3507 | break; |
| 3508 | |
| 3509 | default: |
| 3510 | return VFP11_BAD; |
| 3511 | } |
| 3512 | } |
| 3513 | /* Two-register transfer. */ |
| 3514 | else if ((insn & 0x0fe00ed0) == 0x0c400a10) |
| 3515 | { |
| 3516 | unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5); |
| 3517 | |
| 3518 | if ((insn & 0x100000) == 0) |
| 3519 | { |
| 3520 | if (is_double) |
| 3521 | bfd_arm_vfp11_write_mask (destmask, fm); |
| 3522 | else |
| 3523 | { |
| 3524 | bfd_arm_vfp11_write_mask (destmask, fm); |
| 3525 | bfd_arm_vfp11_write_mask (destmask, fm + 1); |
| 3526 | } |
| 3527 | } |
| 3528 | |
| 3529 | pipe = VFP11_LS; |
| 3530 | } |
| 3531 | else if ((insn & 0x0e100e00) == 0x0c100a00) /* A load insn. */ |
| 3532 | { |
| 3533 | int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22); |
| 3534 | unsigned int puw = ((insn >> 21) & 0x1) | (((insn >> 23) & 3) << 1); |
| 3535 | |
| 3536 | switch (puw) |
| 3537 | { |
| 3538 | case 0: /* Two-reg transfer. We should catch these above. */ |
| 3539 | abort (); |
| 3540 | |
| 3541 | case 2: /* fldm[sdx]. */ |
| 3542 | case 3: |
| 3543 | case 5: |
| 3544 | { |
| 3545 | unsigned int i, offset = insn & 0xff; |
| 3546 | |
| 3547 | if (is_double) |
| 3548 | offset >>= 1; |
| 3549 | |
| 3550 | for (i = fd; i < fd + offset; i++) |
| 3551 | bfd_arm_vfp11_write_mask (destmask, i); |
| 3552 | } |
| 3553 | break; |
| 3554 | |
| 3555 | case 4: /* fld[sd]. */ |
| 3556 | case 6: |
| 3557 | bfd_arm_vfp11_write_mask (destmask, fd); |
| 3558 | break; |
| 3559 | |
| 3560 | default: |
| 3561 | return VFP11_BAD; |
| 3562 | } |
| 3563 | |
| 3564 | pipe = VFP11_LS; |
| 3565 | } |
| 3566 | /* Single-register transfer. Note L==0. */ |
| 3567 | else if ((insn & 0x0f100e10) == 0x0e000a10) |
| 3568 | { |
| 3569 | unsigned int opcode = (insn >> 21) & 7; |
| 3570 | unsigned int fn = bfd_arm_vfp11_regno (insn, is_double, 16, 7); |
| 3571 | |
| 3572 | switch (opcode) |
| 3573 | { |
| 3574 | case 0: /* fmsr/fmdlr. */ |
| 3575 | case 1: /* fmdhr. */ |
| 3576 | /* Mark fmdhr and fmdlr as writing to the whole of the DP |
| 3577 | destination register. I don't know if this is exactly right, |
| 3578 | but it is the conservative choice. */ |
| 3579 | bfd_arm_vfp11_write_mask (destmask, fn); |
| 3580 | break; |
| 3581 | |
| 3582 | case 7: /* fmxr. */ |
| 3583 | break; |
| 3584 | } |
| 3585 | |
| 3586 | pipe = VFP11_LS; |
| 3587 | } |
| 3588 | |
| 3589 | return pipe; |
| 3590 | } |
| 3591 | |
| 3592 | |
| 3593 | static int elf32_arm_compare_mapping (const void * a, const void * b); |
| 3594 | |
| 3595 | |
| 3596 | /* Look for potentially-troublesome code sequences which might trigger the |
| 3597 | VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet |
| 3598 | (available from ARM) for details of the erratum. A short version is |
| 3599 | described in ld.texinfo. */ |
| 3600 | |
| 3601 | bfd_boolean |
| 3602 | bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info) |
| 3603 | { |
| 3604 | asection *sec; |
| 3605 | bfd_byte *contents = NULL; |
| 3606 | int state = 0; |
| 3607 | int regs[3], numregs = 0; |
| 3608 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); |
| 3609 | int use_vector = (globals->vfp11_fix == BFD_ARM_VFP11_FIX_VECTOR); |
| 3610 | |
| 3611 | /* We use a simple FSM to match troublesome VFP11 instruction sequences. |
| 3612 | The states transition as follows: |
| 3613 | |
| 3614 | 0 -> 1 (vector) or 0 -> 2 (scalar) |
| 3615 | A VFP FMAC-pipeline instruction has been seen. Fill |
| 3616 | regs[0]..regs[numregs-1] with its input operands. Remember this |
| 3617 | instruction in 'first_fmac'. |
| 3618 | |
| 3619 | 1 -> 2 |
| 3620 | Any instruction, except for a VFP instruction which overwrites |
| 3621 | regs[*]. |
| 3622 | |
| 3623 | 1 -> 3 [ -> 0 ] or |
| 3624 | 2 -> 3 [ -> 0 ] |
| 3625 | A VFP instruction has been seen which overwrites any of regs[*]. |
| 3626 | We must make a veneer! Reset state to 0 before examining next |
| 3627 | instruction. |
| 3628 | |
| 3629 | 2 -> 0 |
| 3630 | If we fail to match anything in state 2, reset to state 0 and reset |
| 3631 | the instruction pointer to the instruction after 'first_fmac'. |
| 3632 | |
| 3633 | If the VFP11 vector mode is in use, there must be at least two unrelated |
| 3634 | instructions between anti-dependent VFP11 instructions to properly avoid |
| 3635 | triggering the erratum, hence the use of the extra state 1. |
| 3636 | */ |
| 3637 | |
| 3638 | /* If we are only performing a partial link do not bother |
| 3639 | to construct any glue. */ |
| 3640 | if (link_info->relocatable) |
| 3641 | return TRUE; |
| 3642 | |
| 3643 | /* We should have chosen a fix type by the time we get here. */ |
| 3644 | BFD_ASSERT (globals->vfp11_fix != BFD_ARM_VFP11_FIX_DEFAULT); |
| 3645 | |
| 3646 | if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_NONE) |
| 3647 | return TRUE; |
| 3648 | |
| 3649 | /* Skip if this bfd does not correspond to an ELF image. */ |
| 3650 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour) |
| 3651 | return TRUE; |
| 3652 | |
| 3653 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
| 3654 | { |
| 3655 | unsigned int i, span, first_fmac = 0, veneer_of_insn = 0; |
| 3656 | struct _arm_elf_section_data *sec_data; |
| 3657 | |
| 3658 | /* If we don't have executable progbits, we're not interested in this |
| 3659 | section. Also skip if section is to be excluded. */ |
| 3660 | if (elf_section_type (sec) != SHT_PROGBITS |
| 3661 | || (elf_section_flags (sec) & SHF_EXECINSTR) == 0 |
| 3662 | || (sec->flags & SEC_EXCLUDE) != 0 |
| 3663 | || strcmp (sec->name, VFP11_ERRATUM_VENEER_SECTION_NAME) == 0) |
| 3664 | continue; |
| 3665 | |
| 3666 | sec_data = elf32_arm_section_data (sec); |
| 3667 | |
| 3668 | if (sec_data->mapcount == 0) |
| 3669 | continue; |
| 3670 | |
| 3671 | if (elf_section_data (sec)->this_hdr.contents != NULL) |
| 3672 | contents = elf_section_data (sec)->this_hdr.contents; |
| 3673 | else if (! bfd_malloc_and_get_section (abfd, sec, &contents)) |
| 3674 | goto error_return; |
| 3675 | |
| 3676 | qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map), |
| 3677 | elf32_arm_compare_mapping); |
| 3678 | |
| 3679 | for (span = 0; span < sec_data->mapcount; span++) |
| 3680 | { |
| 3681 | unsigned int span_start = sec_data->map[span].vma; |
| 3682 | unsigned int span_end = (span == sec_data->mapcount - 1) |
| 3683 | ? sec->size : sec_data->map[span + 1].vma; |
| 3684 | char span_type = sec_data->map[span].type; |
| 3685 | |
| 3686 | /* FIXME: Only ARM mode is supported at present. We may need to |
| 3687 | support Thumb-2 mode also at some point. */ |
| 3688 | if (span_type != 'a') |
| 3689 | continue; |
| 3690 | |
| 3691 | for (i = span_start; i < span_end;) |
| 3692 | { |
| 3693 | unsigned int next_i = i + 4; |
| 3694 | unsigned int insn = bfd_big_endian (abfd) |
| 3695 | ? (contents[i] << 24) |
| 3696 | | (contents[i + 1] << 16) |
| 3697 | | (contents[i + 2] << 8) |
| 3698 | | contents[i + 3] |
| 3699 | : (contents[i + 3] << 24) |
| 3700 | | (contents[i + 2] << 16) |
| 3701 | | (contents[i + 1] << 8) |
| 3702 | | contents[i]; |
| 3703 | unsigned int writemask = 0; |
| 3704 | enum bfd_arm_vfp11_pipe pipe; |
| 3705 | |
| 3706 | switch (state) |
| 3707 | { |
| 3708 | case 0: |
| 3709 | pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, regs, |
| 3710 | &numregs); |
| 3711 | /* I'm assuming the VFP11 erratum can trigger with denorm |
| 3712 | operands on either the FMAC or the DS pipeline. This might |
| 3713 | lead to slightly overenthusiastic veneer insertion. */ |
| 3714 | if (pipe == VFP11_FMAC || pipe == VFP11_DS) |
| 3715 | { |
| 3716 | state = use_vector ? 1 : 2; |
| 3717 | first_fmac = i; |
| 3718 | veneer_of_insn = insn; |
| 3719 | } |
| 3720 | break; |
| 3721 | |
| 3722 | case 1: |
| 3723 | { |
| 3724 | int other_regs[3], other_numregs; |
| 3725 | pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, |
| 3726 | other_regs, |
| 3727 | &other_numregs); |
| 3728 | if (pipe != VFP11_BAD |
| 3729 | && bfd_arm_vfp11_antidependency (writemask, regs, |
| 3730 | numregs)) |
| 3731 | state = 3; |
| 3732 | else |
| 3733 | state = 2; |
| 3734 | } |
| 3735 | break; |
| 3736 | |
| 3737 | case 2: |
| 3738 | { |
| 3739 | int other_regs[3], other_numregs; |
| 3740 | pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, |
| 3741 | other_regs, |
| 3742 | &other_numregs); |
| 3743 | if (pipe != VFP11_BAD |
| 3744 | && bfd_arm_vfp11_antidependency (writemask, regs, |
| 3745 | numregs)) |
| 3746 | state = 3; |
| 3747 | else |
| 3748 | { |
| 3749 | state = 0; |
| 3750 | next_i = first_fmac + 4; |
| 3751 | } |
| 3752 | } |
| 3753 | break; |
| 3754 | |
| 3755 | case 3: |
| 3756 | abort (); /* Should be unreachable. */ |
| 3757 | } |
| 3758 | |
| 3759 | if (state == 3) |
| 3760 | { |
| 3761 | elf32_vfp11_erratum_list *newerr |
| 3762 | = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list)); |
| 3763 | int errcount; |
| 3764 | |
| 3765 | errcount = ++(elf32_arm_section_data (sec)->erratumcount); |
| 3766 | |
| 3767 | newerr->u.b.vfp_insn = veneer_of_insn; |
| 3768 | |
| 3769 | switch (span_type) |
| 3770 | { |
| 3771 | case 'a': |
| 3772 | newerr->type = VFP11_ERRATUM_BRANCH_TO_ARM_VENEER; |
| 3773 | break; |
| 3774 | |
| 3775 | default: |
| 3776 | abort (); |
| 3777 | } |
| 3778 | |
| 3779 | record_vfp11_erratum_veneer (link_info, newerr, abfd, sec, |
| 3780 | first_fmac); |
| 3781 | |
| 3782 | newerr->vma = -1; |
| 3783 | |
| 3784 | newerr->next = sec_data->erratumlist; |
| 3785 | sec_data->erratumlist = newerr; |
| 3786 | |
| 3787 | state = 0; |
| 3788 | } |
| 3789 | |
| 3790 | i = next_i; |
| 3791 | } |
| 3792 | } |
| 3793 | |
| 3794 | if (contents != NULL |
| 3795 | && elf_section_data (sec)->this_hdr.contents != contents) |
| 3796 | free (contents); |
| 3797 | contents = NULL; |
| 3798 | } |
| 3799 | |
| 3800 | return TRUE; |
| 3801 | |
| 3802 | error_return: |
| 3803 | if (contents != NULL |
| 3804 | && elf_section_data (sec)->this_hdr.contents != contents) |
| 3805 | free (contents); |
| 3806 | |
| 3807 | return FALSE; |
| 3808 | } |
| 3809 | |
| 3810 | /* Find virtual-memory addresses for VFP11 erratum veneers and return locations |
| 3811 | after sections have been laid out, using specially-named symbols. */ |
| 3812 | |
| 3813 | void |
| 3814 | bfd_elf32_arm_vfp11_fix_veneer_locations (bfd *abfd, |
| 3815 | struct bfd_link_info *link_info) |
| 3816 | { |
| 3817 | asection *sec; |
| 3818 | struct elf32_arm_link_hash_table *globals; |
| 3819 | char *tmp_name; |
| 3820 | |
| 3821 | if (link_info->relocatable) |
| 3822 | return; |
| 3823 | |
| 3824 | /* Skip if this bfd does not correspond to an ELF image. */ |
| 3825 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour) |
| 3826 | return; |
| 3827 | |
| 3828 | globals = elf32_arm_hash_table (link_info); |
| 3829 | |
| 3830 | tmp_name = bfd_malloc ((bfd_size_type) strlen |
| 3831 | (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10); |
| 3832 | |
| 3833 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
| 3834 | { |
| 3835 | struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec); |
| 3836 | elf32_vfp11_erratum_list *errnode = sec_data->erratumlist; |
| 3837 | |
| 3838 | for (; errnode != NULL; errnode = errnode->next) |
| 3839 | { |
| 3840 | struct elf_link_hash_entry *myh; |
| 3841 | bfd_vma vma; |
| 3842 | |
| 3843 | switch (errnode->type) |
| 3844 | { |
| 3845 | case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER: |
| 3846 | case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER: |
| 3847 | /* Find veneer symbol. */ |
| 3848 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME, |
| 3849 | errnode->u.b.veneer->u.v.id); |
| 3850 | |
| 3851 | myh = elf_link_hash_lookup |
| 3852 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); |
| 3853 | |
| 3854 | if (myh == NULL) |
| 3855 | (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer " |
| 3856 | "`%s'"), abfd, tmp_name); |
| 3857 | |
| 3858 | vma = myh->root.u.def.section->output_section->vma |
| 3859 | + myh->root.u.def.section->output_offset |
| 3860 | + myh->root.u.def.value; |
| 3861 | |
| 3862 | errnode->u.b.veneer->vma = vma; |
| 3863 | break; |
| 3864 | |
| 3865 | case VFP11_ERRATUM_ARM_VENEER: |
| 3866 | case VFP11_ERRATUM_THUMB_VENEER: |
| 3867 | /* Find return location. */ |
| 3868 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r", |
| 3869 | errnode->u.v.id); |
| 3870 | |
| 3871 | myh = elf_link_hash_lookup |
| 3872 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); |
| 3873 | |
| 3874 | if (myh == NULL) |
| 3875 | (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer " |
| 3876 | "`%s'"), abfd, tmp_name); |
| 3877 | |
| 3878 | vma = myh->root.u.def.section->output_section->vma |
| 3879 | + myh->root.u.def.section->output_offset |
| 3880 | + myh->root.u.def.value; |
| 3881 | |
| 3882 | errnode->u.v.branch->vma = vma; |
| 3883 | break; |
| 3884 | |
| 3885 | default: |
| 3886 | abort (); |
| 3887 | } |
| 3888 | } |
| 3889 | } |
| 3890 | |
| 3891 | free (tmp_name); |
| 3892 | } |
| 3893 | |
| 3894 | |
| 3895 | /* Set target relocation values needed during linking. */ |
| 3896 | |
| 3897 | void |
| 3898 | bfd_elf32_arm_set_target_relocs (struct bfd *output_bfd, |
| 3899 | struct bfd_link_info *link_info, |
| 3900 | int target1_is_rel, |
| 3901 | char * target2_type, |
| 3902 | int fix_v4bx, |
| 3903 | int use_blx, |
| 3904 | bfd_arm_vfp11_fix vfp11_fix, |
| 3905 | int no_enum_warn, int pic_veneer) |
| 3906 | { |
| 3907 | struct elf32_arm_link_hash_table *globals; |
| 3908 | |
| 3909 | globals = elf32_arm_hash_table (link_info); |
| 3910 | |
| 3911 | globals->target1_is_rel = target1_is_rel; |
| 3912 | if (strcmp (target2_type, "rel") == 0) |
| 3913 | globals->target2_reloc = R_ARM_REL32; |
| 3914 | else if (strcmp (target2_type, "abs") == 0) |
| 3915 | globals->target2_reloc = R_ARM_ABS32; |
| 3916 | else if (strcmp (target2_type, "got-rel") == 0) |
| 3917 | globals->target2_reloc = R_ARM_GOT_PREL; |
| 3918 | else |
| 3919 | { |
| 3920 | _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."), |
| 3921 | target2_type); |
| 3922 | } |
| 3923 | globals->fix_v4bx = fix_v4bx; |
| 3924 | globals->use_blx |= use_blx; |
| 3925 | globals->vfp11_fix = vfp11_fix; |
| 3926 | globals->pic_veneer = pic_veneer; |
| 3927 | |
| 3928 | elf32_arm_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; |
| 3929 | } |
| 3930 | |
| 3931 | /* The thumb form of a long branch is a bit finicky, because the offset |
| 3932 | encoding is split over two fields, each in it's own instruction. They |
| 3933 | can occur in any order. So given a thumb form of long branch, and an |
| 3934 | offset, insert the offset into the thumb branch and return finished |
| 3935 | instruction. |
| 3936 | |
| 3937 | It takes two thumb instructions to encode the target address. Each has |
| 3938 | 11 bits to invest. The upper 11 bits are stored in one (identified by |
| 3939 | H-0.. see below), the lower 11 bits are stored in the other (identified |
| 3940 | by H-1). |
| 3941 | |
| 3942 | Combine together and shifted left by 1 (it's a half word address) and |
| 3943 | there you have it. |
| 3944 | |
| 3945 | Op: 1111 = F, |
| 3946 | H-0, upper address-0 = 000 |
| 3947 | Op: 1111 = F, |
| 3948 | H-1, lower address-0 = 800 |
| 3949 | |
| 3950 | They can be ordered either way, but the arm tools I've seen always put |
| 3951 | the lower one first. It probably doesn't matter. krk@cygnus.com |
| 3952 | |
| 3953 | XXX: Actually the order does matter. The second instruction (H-1) |
| 3954 | moves the computed address into the PC, so it must be the second one |
| 3955 | in the sequence. The problem, however is that whilst little endian code |
| 3956 | stores the instructions in HI then LOW order, big endian code does the |
| 3957 | reverse. nickc@cygnus.com. */ |
| 3958 | |
| 3959 | #define LOW_HI_ORDER 0xF800F000 |
| 3960 | #define HI_LOW_ORDER 0xF000F800 |
| 3961 | |
| 3962 | static insn32 |
| 3963 | insert_thumb_branch (insn32 br_insn, int rel_off) |
| 3964 | { |
| 3965 | unsigned int low_bits; |
| 3966 | unsigned int high_bits; |
| 3967 | |
| 3968 | BFD_ASSERT ((rel_off & 1) != 1); |
| 3969 | |
| 3970 | rel_off >>= 1; /* Half word aligned address. */ |
| 3971 | low_bits = rel_off & 0x000007FF; /* The bottom 11 bits. */ |
| 3972 | high_bits = (rel_off >> 11) & 0x000007FF; /* The top 11 bits. */ |
| 3973 | |
| 3974 | if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER) |
| 3975 | br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits; |
| 3976 | else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER) |
| 3977 | br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits; |
| 3978 | else |
| 3979 | /* FIXME: abort is probably not the right call. krk@cygnus.com */ |
| 3980 | abort (); /* Error - not a valid branch instruction form. */ |
| 3981 | |
| 3982 | return br_insn; |
| 3983 | } |
| 3984 | |
| 3985 | |
| 3986 | /* Store an Arm insn into an output section not processed by |
| 3987 | elf32_arm_write_section. */ |
| 3988 | |
| 3989 | static void |
| 3990 | put_arm_insn (struct elf32_arm_link_hash_table *htab, |
| 3991 | bfd * output_bfd, bfd_vma val, void * ptr) |
| 3992 | { |
| 3993 | if (htab->byteswap_code != bfd_little_endian (output_bfd)) |
| 3994 | bfd_putl32 (val, ptr); |
| 3995 | else |
| 3996 | bfd_putb32 (val, ptr); |
| 3997 | } |
| 3998 | |
| 3999 | |
| 4000 | /* Store a 16-bit Thumb insn into an output section not processed by |
| 4001 | elf32_arm_write_section. */ |
| 4002 | |
| 4003 | static void |
| 4004 | put_thumb_insn (struct elf32_arm_link_hash_table *htab, |
| 4005 | bfd * output_bfd, bfd_vma val, void * ptr) |
| 4006 | { |
| 4007 | if (htab->byteswap_code != bfd_little_endian (output_bfd)) |
| 4008 | bfd_putl16 (val, ptr); |
| 4009 | else |
| 4010 | bfd_putb16 (val, ptr); |
| 4011 | } |
| 4012 | |
| 4013 | |
| 4014 | /* Thumb code calling an ARM function. */ |
| 4015 | |
| 4016 | static int |
| 4017 | elf32_thumb_to_arm_stub (struct bfd_link_info * info, |
| 4018 | const char * name, |
| 4019 | bfd * input_bfd, |
| 4020 | bfd * output_bfd, |
| 4021 | asection * input_section, |
| 4022 | bfd_byte * hit_data, |
| 4023 | asection * sym_sec, |
| 4024 | bfd_vma offset, |
| 4025 | bfd_signed_vma addend, |
| 4026 | bfd_vma val, |
| 4027 | char **error_message) |
| 4028 | { |
| 4029 | asection * s = 0; |
| 4030 | bfd_vma my_offset; |
| 4031 | unsigned long int tmp; |
| 4032 | long int ret_offset; |
| 4033 | struct elf_link_hash_entry * myh; |
| 4034 | struct elf32_arm_link_hash_table * globals; |
| 4035 | |
| 4036 | myh = find_thumb_glue (info, name, error_message); |
| 4037 | if (myh == NULL) |
| 4038 | return FALSE; |
| 4039 | |
| 4040 | globals = elf32_arm_hash_table (info); |
| 4041 | |
| 4042 | BFD_ASSERT (globals != NULL); |
| 4043 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); |
| 4044 | |
| 4045 | my_offset = myh->root.u.def.value; |
| 4046 | |
| 4047 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, |
| 4048 | THUMB2ARM_GLUE_SECTION_NAME); |
| 4049 | |
| 4050 | BFD_ASSERT (s != NULL); |
| 4051 | BFD_ASSERT (s->contents != NULL); |
| 4052 | BFD_ASSERT (s->output_section != NULL); |
| 4053 | |
| 4054 | if ((my_offset & 0x01) == 0x01) |
| 4055 | { |
| 4056 | if (sym_sec != NULL |
| 4057 | && sym_sec->owner != NULL |
| 4058 | && !INTERWORK_FLAG (sym_sec->owner)) |
| 4059 | { |
| 4060 | (*_bfd_error_handler) |
| 4061 | (_("%B(%s): warning: interworking not enabled.\n" |
| 4062 | " first occurrence: %B: thumb call to arm"), |
| 4063 | sym_sec->owner, input_bfd, name); |
| 4064 | |
| 4065 | return FALSE; |
| 4066 | } |
| 4067 | |
| 4068 | --my_offset; |
| 4069 | myh->root.u.def.value = my_offset; |
| 4070 | |
| 4071 | put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn, |
| 4072 | s->contents + my_offset); |
| 4073 | |
| 4074 | put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn, |
| 4075 | s->contents + my_offset + 2); |
| 4076 | |
| 4077 | ret_offset = |
| 4078 | /* Address of destination of the stub. */ |
| 4079 | ((bfd_signed_vma) val) |
| 4080 | - ((bfd_signed_vma) |
| 4081 | /* Offset from the start of the current section |
| 4082 | to the start of the stubs. */ |
| 4083 | (s->output_offset |
| 4084 | /* Offset of the start of this stub from the start of the stubs. */ |
| 4085 | + my_offset |
| 4086 | /* Address of the start of the current section. */ |
| 4087 | + s->output_section->vma) |
| 4088 | /* The branch instruction is 4 bytes into the stub. */ |
| 4089 | + 4 |
| 4090 | /* ARM branches work from the pc of the instruction + 8. */ |
| 4091 | + 8); |
| 4092 | |
| 4093 | put_arm_insn (globals, output_bfd, |
| 4094 | (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF), |
| 4095 | s->contents + my_offset + 4); |
| 4096 | } |
| 4097 | |
| 4098 | BFD_ASSERT (my_offset <= globals->thumb_glue_size); |
| 4099 | |
| 4100 | /* Now go back and fix up the original BL insn to point to here. */ |
| 4101 | ret_offset = |
| 4102 | /* Address of where the stub is located. */ |
| 4103 | (s->output_section->vma + s->output_offset + my_offset) |
| 4104 | /* Address of where the BL is located. */ |
| 4105 | - (input_section->output_section->vma + input_section->output_offset |
| 4106 | + offset) |
| 4107 | /* Addend in the relocation. */ |
| 4108 | - addend |
| 4109 | /* Biassing for PC-relative addressing. */ |
| 4110 | - 8; |
| 4111 | |
| 4112 | tmp = bfd_get_32 (input_bfd, hit_data |
| 4113 | - input_section->vma); |
| 4114 | |
| 4115 | bfd_put_32 (output_bfd, |
| 4116 | (bfd_vma) insert_thumb_branch (tmp, ret_offset), |
| 4117 | hit_data - input_section->vma); |
| 4118 | |
| 4119 | return TRUE; |
| 4120 | } |
| 4121 | |
| 4122 | /* Populate an Arm to Thumb stub. Returns the stub symbol. */ |
| 4123 | |
| 4124 | static struct elf_link_hash_entry * |
| 4125 | elf32_arm_create_thumb_stub (struct bfd_link_info * info, |
| 4126 | const char * name, |
| 4127 | bfd * input_bfd, |
| 4128 | bfd * output_bfd, |
| 4129 | asection * sym_sec, |
| 4130 | bfd_vma val, |
| 4131 | asection *s, |
| 4132 | char **error_message) |
| 4133 | { |
| 4134 | bfd_vma my_offset; |
| 4135 | long int ret_offset; |
| 4136 | struct elf_link_hash_entry * myh; |
| 4137 | struct elf32_arm_link_hash_table * globals; |
| 4138 | |
| 4139 | myh = find_arm_glue (info, name, error_message); |
| 4140 | if (myh == NULL) |
| 4141 | return NULL; |
| 4142 | |
| 4143 | globals = elf32_arm_hash_table (info); |
| 4144 | |
| 4145 | BFD_ASSERT (globals != NULL); |
| 4146 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); |
| 4147 | |
| 4148 | my_offset = myh->root.u.def.value; |
| 4149 | |
| 4150 | if ((my_offset & 0x01) == 0x01) |
| 4151 | { |
| 4152 | if (sym_sec != NULL |
| 4153 | && sym_sec->owner != NULL |
| 4154 | && !INTERWORK_FLAG (sym_sec->owner)) |
| 4155 | { |
| 4156 | (*_bfd_error_handler) |
| 4157 | (_("%B(%s): warning: interworking not enabled.\n" |
| 4158 | " first occurrence: %B: arm call to thumb"), |
| 4159 | sym_sec->owner, input_bfd, name); |
| 4160 | } |
| 4161 | |
| 4162 | --my_offset; |
| 4163 | myh->root.u.def.value = my_offset; |
| 4164 | |
| 4165 | if (info->shared || globals->root.is_relocatable_executable |
| 4166 | || globals->pic_veneer) |
| 4167 | { |
| 4168 | /* For relocatable objects we can't use absolute addresses, |
| 4169 | so construct the address from a relative offset. */ |
| 4170 | /* TODO: If the offset is small it's probably worth |
| 4171 | constructing the address with adds. */ |
| 4172 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn, |
| 4173 | s->contents + my_offset); |
| 4174 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn, |
| 4175 | s->contents + my_offset + 4); |
| 4176 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn, |
| 4177 | s->contents + my_offset + 8); |
| 4178 | /* Adjust the offset by 4 for the position of the add, |
| 4179 | and 8 for the pipeline offset. */ |
| 4180 | ret_offset = (val - (s->output_offset |
| 4181 | + s->output_section->vma |
| 4182 | + my_offset + 12)) |
| 4183 | | 1; |
| 4184 | bfd_put_32 (output_bfd, ret_offset, |
| 4185 | s->contents + my_offset + 12); |
| 4186 | } |
| 4187 | else if (globals->use_blx) |
| 4188 | { |
| 4189 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1v5_ldr_insn, |
| 4190 | s->contents + my_offset); |
| 4191 | |
| 4192 | /* It's a thumb address. Add the low order bit. */ |
| 4193 | bfd_put_32 (output_bfd, val | a2t2v5_func_addr_insn, |
| 4194 | s->contents + my_offset + 4); |
| 4195 | } |
| 4196 | else |
| 4197 | { |
| 4198 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn, |
| 4199 | s->contents + my_offset); |
| 4200 | |
| 4201 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn, |
| 4202 | s->contents + my_offset + 4); |
| 4203 | |
| 4204 | /* It's a thumb address. Add the low order bit. */ |
| 4205 | bfd_put_32 (output_bfd, val | a2t3_func_addr_insn, |
| 4206 | s->contents + my_offset + 8); |
| 4207 | } |
| 4208 | } |
| 4209 | |
| 4210 | BFD_ASSERT (my_offset <= globals->arm_glue_size); |
| 4211 | |
| 4212 | return myh; |
| 4213 | } |
| 4214 | |
| 4215 | /* Arm code calling a Thumb function. */ |
| 4216 | |
| 4217 | static int |
| 4218 | elf32_arm_to_thumb_stub (struct bfd_link_info * info, |
| 4219 | const char * name, |
| 4220 | bfd * input_bfd, |
| 4221 | bfd * output_bfd, |
| 4222 | asection * input_section, |
| 4223 | bfd_byte * hit_data, |
| 4224 | asection * sym_sec, |
| 4225 | bfd_vma offset, |
| 4226 | bfd_signed_vma addend, |
| 4227 | bfd_vma val, |
| 4228 | char **error_message) |
| 4229 | { |
| 4230 | unsigned long int tmp; |
| 4231 | bfd_vma my_offset; |
| 4232 | asection * s; |
| 4233 | long int ret_offset; |
| 4234 | struct elf_link_hash_entry * myh; |
| 4235 | struct elf32_arm_link_hash_table * globals; |
| 4236 | |
| 4237 | globals = elf32_arm_hash_table (info); |
| 4238 | |
| 4239 | BFD_ASSERT (globals != NULL); |
| 4240 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); |
| 4241 | |
| 4242 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, |
| 4243 | ARM2THUMB_GLUE_SECTION_NAME); |
| 4244 | BFD_ASSERT (s != NULL); |
| 4245 | BFD_ASSERT (s->contents != NULL); |
| 4246 | BFD_ASSERT (s->output_section != NULL); |
| 4247 | |
| 4248 | myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd, |
| 4249 | sym_sec, val, s, error_message); |
| 4250 | if (!myh) |
| 4251 | return FALSE; |
| 4252 | |
| 4253 | my_offset = myh->root.u.def.value; |
| 4254 | tmp = bfd_get_32 (input_bfd, hit_data); |
| 4255 | tmp = tmp & 0xFF000000; |
| 4256 | |
| 4257 | /* Somehow these are both 4 too far, so subtract 8. */ |
| 4258 | ret_offset = (s->output_offset |
| 4259 | + my_offset |
| 4260 | + s->output_section->vma |
| 4261 | - (input_section->output_offset |
| 4262 | + input_section->output_section->vma |
| 4263 | + offset + addend) |
| 4264 | - 8); |
| 4265 | |
| 4266 | tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF); |
| 4267 | |
| 4268 | bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma); |
| 4269 | |
| 4270 | return TRUE; |
| 4271 | } |
| 4272 | |
| 4273 | /* Populate Arm stub for an exported Thumb function. */ |
| 4274 | |
| 4275 | static bfd_boolean |
| 4276 | elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf) |
| 4277 | { |
| 4278 | struct bfd_link_info * info = (struct bfd_link_info *) inf; |
| 4279 | asection * s; |
| 4280 | struct elf_link_hash_entry * myh; |
| 4281 | struct elf32_arm_link_hash_entry *eh; |
| 4282 | struct elf32_arm_link_hash_table * globals; |
| 4283 | asection *sec; |
| 4284 | bfd_vma val; |
| 4285 | char *error_message; |
| 4286 | |
| 4287 | eh = elf32_arm_hash_entry(h); |
| 4288 | /* Allocate stubs for exported Thumb functions on v4t. */ |
| 4289 | if (eh->export_glue == NULL) |
| 4290 | return TRUE; |
| 4291 | |
| 4292 | globals = elf32_arm_hash_table (info); |
| 4293 | |
| 4294 | BFD_ASSERT (globals != NULL); |
| 4295 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); |
| 4296 | |
| 4297 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, |
| 4298 | ARM2THUMB_GLUE_SECTION_NAME); |
| 4299 | BFD_ASSERT (s != NULL); |
| 4300 | BFD_ASSERT (s->contents != NULL); |
| 4301 | BFD_ASSERT (s->output_section != NULL); |
| 4302 | |
| 4303 | sec = eh->export_glue->root.u.def.section; |
| 4304 | |
| 4305 | BFD_ASSERT (sec->output_section != NULL); |
| 4306 | |
| 4307 | val = eh->export_glue->root.u.def.value + sec->output_offset |
| 4308 | + sec->output_section->vma; |
| 4309 | myh = elf32_arm_create_thumb_stub (info, h->root.root.string, |
| 4310 | h->root.u.def.section->owner, |
| 4311 | globals->obfd, sec, val, s, |
| 4312 | &error_message); |
| 4313 | BFD_ASSERT (myh); |
| 4314 | return TRUE; |
| 4315 | } |
| 4316 | |
| 4317 | /* Generate Arm stubs for exported Thumb symbols. */ |
| 4318 | static void |
| 4319 | elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED, |
| 4320 | struct bfd_link_info *link_info) |
| 4321 | { |
| 4322 | struct elf32_arm_link_hash_table * globals; |
| 4323 | |
| 4324 | if (!link_info) |
| 4325 | return; |
| 4326 | |
| 4327 | globals = elf32_arm_hash_table (link_info); |
| 4328 | /* If blx is available then exported Thumb symbols are OK and there is |
| 4329 | nothing to do. */ |
| 4330 | if (globals->use_blx) |
| 4331 | return; |
| 4332 | |
| 4333 | elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub, |
| 4334 | link_info); |
| 4335 | } |
| 4336 | |
| 4337 | /* Some relocations map to different relocations depending on the |
| 4338 | target. Return the real relocation. */ |
| 4339 | static int |
| 4340 | arm_real_reloc_type (struct elf32_arm_link_hash_table * globals, |
| 4341 | int r_type) |
| 4342 | { |
| 4343 | switch (r_type) |
| 4344 | { |
| 4345 | case R_ARM_TARGET1: |
| 4346 | if (globals->target1_is_rel) |
| 4347 | return R_ARM_REL32; |
| 4348 | else |
| 4349 | return R_ARM_ABS32; |
| 4350 | |
| 4351 | case R_ARM_TARGET2: |
| 4352 | return globals->target2_reloc; |
| 4353 | |
| 4354 | default: |
| 4355 | return r_type; |
| 4356 | } |
| 4357 | } |
| 4358 | |
| 4359 | /* Return the base VMA address which should be subtracted from real addresses |
| 4360 | when resolving @dtpoff relocation. |
| 4361 | This is PT_TLS segment p_vaddr. */ |
| 4362 | |
| 4363 | static bfd_vma |
| 4364 | dtpoff_base (struct bfd_link_info *info) |
| 4365 | { |
| 4366 | /* If tls_sec is NULL, we should have signalled an error already. */ |
| 4367 | if (elf_hash_table (info)->tls_sec == NULL) |
| 4368 | return 0; |
| 4369 | return elf_hash_table (info)->tls_sec->vma; |
| 4370 | } |
| 4371 | |
| 4372 | /* Return the relocation value for @tpoff relocation |
| 4373 | if STT_TLS virtual address is ADDRESS. */ |
| 4374 | |
| 4375 | static bfd_vma |
| 4376 | tpoff (struct bfd_link_info *info, bfd_vma address) |
| 4377 | { |
| 4378 | struct elf_link_hash_table *htab = elf_hash_table (info); |
| 4379 | bfd_vma base; |
| 4380 | |
| 4381 | /* If tls_sec is NULL, we should have signalled an error already. */ |
| 4382 | if (htab->tls_sec == NULL) |
| 4383 | return 0; |
| 4384 | base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power); |
| 4385 | return address - htab->tls_sec->vma + base; |
| 4386 | } |
| 4387 | |
| 4388 | /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA. |
| 4389 | VALUE is the relocation value. */ |
| 4390 | |
| 4391 | static bfd_reloc_status_type |
| 4392 | elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value) |
| 4393 | { |
| 4394 | if (value > 0xfff) |
| 4395 | return bfd_reloc_overflow; |
| 4396 | |
| 4397 | value |= bfd_get_32 (abfd, data) & 0xfffff000; |
| 4398 | bfd_put_32 (abfd, value, data); |
| 4399 | return bfd_reloc_ok; |
| 4400 | } |
| 4401 | |
| 4402 | /* For a given value of n, calculate the value of G_n as required to |
| 4403 | deal with group relocations. We return it in the form of an |
| 4404 | encoded constant-and-rotation, together with the final residual. If n is |
| 4405 | specified as less than zero, then final_residual is filled with the |
| 4406 | input value and no further action is performed. */ |
| 4407 | |
| 4408 | static bfd_vma |
| 4409 | calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual) |
| 4410 | { |
| 4411 | int current_n; |
| 4412 | bfd_vma g_n; |
| 4413 | bfd_vma encoded_g_n = 0; |
| 4414 | bfd_vma residual = value; /* Also known as Y_n. */ |
| 4415 | |
| 4416 | for (current_n = 0; current_n <= n; current_n++) |
| 4417 | { |
| 4418 | int shift; |
| 4419 | |
| 4420 | /* Calculate which part of the value to mask. */ |
| 4421 | if (residual == 0) |
| 4422 | shift = 0; |
| 4423 | else |
| 4424 | { |
| 4425 | int msb; |
| 4426 | |
| 4427 | /* Determine the most significant bit in the residual and |
| 4428 | align the resulting value to a 2-bit boundary. */ |
| 4429 | for (msb = 30; msb >= 0; msb -= 2) |
| 4430 | if (residual & (3 << msb)) |
| 4431 | break; |
| 4432 | |
| 4433 | /* The desired shift is now (msb - 6), or zero, whichever |
| 4434 | is the greater. */ |
| 4435 | shift = msb - 6; |
| 4436 | if (shift < 0) |
| 4437 | shift = 0; |
| 4438 | } |
| 4439 | |
| 4440 | /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */ |
| 4441 | g_n = residual & (0xff << shift); |
| 4442 | encoded_g_n = (g_n >> shift) |
| 4443 | | ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8); |
| 4444 | |
| 4445 | /* Calculate the residual for the next time around. */ |
| 4446 | residual &= ~g_n; |
| 4447 | } |
| 4448 | |
| 4449 | *final_residual = residual; |
| 4450 | |
| 4451 | return encoded_g_n; |
| 4452 | } |
| 4453 | |
| 4454 | /* Given an ARM instruction, determine whether it is an ADD or a SUB. |
| 4455 | Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */ |
| 4456 | static int |
| 4457 | identify_add_or_sub(bfd_vma insn) |
| 4458 | { |
| 4459 | int opcode = insn & 0x1e00000; |
| 4460 | |
| 4461 | if (opcode == 1 << 23) /* ADD */ |
| 4462 | return 1; |
| 4463 | |
| 4464 | if (opcode == 1 << 22) /* SUB */ |
| 4465 | return -1; |
| 4466 | |
| 4467 | return 0; |
| 4468 | } |
| 4469 | |
| 4470 | /* Determine if we're dealing with a Thumb-2 object. */ |
| 4471 | |
| 4472 | static int using_thumb2 (struct elf32_arm_link_hash_table *globals) |
| 4473 | { |
| 4474 | int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, |
| 4475 | Tag_CPU_arch); |
| 4476 | return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7; |
| 4477 | } |
| 4478 | |
| 4479 | /* Perform a relocation as part of a final link. */ |
| 4480 | |
| 4481 | static bfd_reloc_status_type |
| 4482 | elf32_arm_final_link_relocate (reloc_howto_type * howto, |
| 4483 | bfd * input_bfd, |
| 4484 | bfd * output_bfd, |
| 4485 | asection * input_section, |
| 4486 | bfd_byte * contents, |
| 4487 | Elf_Internal_Rela * rel, |
| 4488 | bfd_vma value, |
| 4489 | struct bfd_link_info * info, |
| 4490 | asection * sym_sec, |
| 4491 | const char * sym_name, |
| 4492 | int sym_flags, |
| 4493 | struct elf_link_hash_entry * h, |
| 4494 | bfd_boolean * unresolved_reloc_p, |
| 4495 | char **error_message) |
| 4496 | { |
| 4497 | unsigned long r_type = howto->type; |
| 4498 | unsigned long r_symndx; |
| 4499 | bfd_byte * hit_data = contents + rel->r_offset; |
| 4500 | bfd * dynobj = NULL; |
| 4501 | Elf_Internal_Shdr * symtab_hdr; |
| 4502 | struct elf_link_hash_entry ** sym_hashes; |
| 4503 | bfd_vma * local_got_offsets; |
| 4504 | asection * sgot = NULL; |
| 4505 | asection * splt = NULL; |
| 4506 | asection * sreloc = NULL; |
| 4507 | bfd_vma addend; |
| 4508 | bfd_signed_vma signed_addend; |
| 4509 | struct elf32_arm_link_hash_table * globals; |
| 4510 | |
| 4511 | globals = elf32_arm_hash_table (info); |
| 4512 | |
| 4513 | /* Some relocation type map to different relocations depending on the |
| 4514 | target. We pick the right one here. */ |
| 4515 | r_type = arm_real_reloc_type (globals, r_type); |
| 4516 | if (r_type != howto->type) |
| 4517 | howto = elf32_arm_howto_from_type (r_type); |
| 4518 | |
| 4519 | /* If the start address has been set, then set the EF_ARM_HASENTRY |
| 4520 | flag. Setting this more than once is redundant, but the cost is |
| 4521 | not too high, and it keeps the code simple. |
| 4522 | |
| 4523 | The test is done here, rather than somewhere else, because the |
| 4524 | start address is only set just before the final link commences. |
| 4525 | |
| 4526 | Note - if the user deliberately sets a start address of 0, the |
| 4527 | flag will not be set. */ |
| 4528 | if (bfd_get_start_address (output_bfd) != 0) |
| 4529 | elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY; |
| 4530 | |
| 4531 | dynobj = elf_hash_table (info)->dynobj; |
| 4532 | if (dynobj) |
| 4533 | { |
| 4534 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 4535 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 4536 | } |
| 4537 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
| 4538 | sym_hashes = elf_sym_hashes (input_bfd); |
| 4539 | local_got_offsets = elf_local_got_offsets (input_bfd); |
| 4540 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 4541 | |
| 4542 | if (globals->use_rel) |
| 4543 | { |
| 4544 | addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask; |
| 4545 | |
| 4546 | if (addend & ((howto->src_mask + 1) >> 1)) |
| 4547 | { |
| 4548 | signed_addend = -1; |
| 4549 | signed_addend &= ~ howto->src_mask; |
| 4550 | signed_addend |= addend; |
| 4551 | } |
| 4552 | else |
| 4553 | signed_addend = addend; |
| 4554 | } |
| 4555 | else |
| 4556 | addend = signed_addend = rel->r_addend; |
| 4557 | |
| 4558 | switch (r_type) |
| 4559 | { |
| 4560 | case R_ARM_NONE: |
| 4561 | /* We don't need to find a value for this symbol. It's just a |
| 4562 | marker. */ |
| 4563 | *unresolved_reloc_p = FALSE; |
| 4564 | return bfd_reloc_ok; |
| 4565 | |
| 4566 | case R_ARM_ABS12: |
| 4567 | if (!globals->vxworks_p) |
| 4568 | return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); |
| 4569 | |
| 4570 | case R_ARM_PC24: |
| 4571 | case R_ARM_ABS32: |
| 4572 | case R_ARM_ABS32_NOI: |
| 4573 | case R_ARM_REL32: |
| 4574 | case R_ARM_REL32_NOI: |
| 4575 | case R_ARM_CALL: |
| 4576 | case R_ARM_JUMP24: |
| 4577 | case R_ARM_XPC25: |
| 4578 | case R_ARM_PREL31: |
| 4579 | case R_ARM_PLT32: |
| 4580 | /* Handle relocations which should use the PLT entry. ABS32/REL32 |
| 4581 | will use the symbol's value, which may point to a PLT entry, but we |
| 4582 | don't need to handle that here. If we created a PLT entry, all |
| 4583 | branches in this object should go to it. */ |
| 4584 | if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32 |
| 4585 | && r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI) |
| 4586 | && h != NULL |
| 4587 | && splt != NULL |
| 4588 | && h->plt.offset != (bfd_vma) -1) |
| 4589 | { |
| 4590 | /* If we've created a .plt section, and assigned a PLT entry to |
| 4591 | this function, it should not be known to bind locally. If |
| 4592 | it were, we would have cleared the PLT entry. */ |
| 4593 | BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h)); |
| 4594 | |
| 4595 | value = (splt->output_section->vma |
| 4596 | + splt->output_offset |
| 4597 | + h->plt.offset); |
| 4598 | *unresolved_reloc_p = FALSE; |
| 4599 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 4600 | contents, rel->r_offset, value, |
| 4601 | rel->r_addend); |
| 4602 | } |
| 4603 | |
| 4604 | /* When generating a shared object or relocatable executable, these |
| 4605 | relocations are copied into the output file to be resolved at |
| 4606 | run time. */ |
| 4607 | if ((info->shared || globals->root.is_relocatable_executable) |
| 4608 | && (input_section->flags & SEC_ALLOC) |
| 4609 | && ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI) |
| 4610 | || !SYMBOL_CALLS_LOCAL (info, h)) |
| 4611 | && (h == NULL |
| 4612 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
| 4613 | || h->root.type != bfd_link_hash_undefweak) |
| 4614 | && r_type != R_ARM_PC24 |
| 4615 | && r_type != R_ARM_CALL |
| 4616 | && r_type != R_ARM_JUMP24 |
| 4617 | && r_type != R_ARM_PREL31 |
| 4618 | && r_type != R_ARM_PLT32) |
| 4619 | { |
| 4620 | Elf_Internal_Rela outrel; |
| 4621 | bfd_byte *loc; |
| 4622 | bfd_boolean skip, relocate; |
| 4623 | |
| 4624 | *unresolved_reloc_p = FALSE; |
| 4625 | |
| 4626 | if (sreloc == NULL) |
| 4627 | { |
| 4628 | const char * name; |
| 4629 | |
| 4630 | name = (bfd_elf_string_from_elf_section |
| 4631 | (input_bfd, |
| 4632 | elf_elfheader (input_bfd)->e_shstrndx, |
| 4633 | elf_section_data (input_section)->rel_hdr.sh_name)); |
| 4634 | if (name == NULL) |
| 4635 | return bfd_reloc_notsupported; |
| 4636 | |
| 4637 | BFD_ASSERT (reloc_section_p (globals, name, input_section)); |
| 4638 | |
| 4639 | sreloc = bfd_get_section_by_name (dynobj, name); |
| 4640 | BFD_ASSERT (sreloc != NULL); |
| 4641 | } |
| 4642 | |
| 4643 | skip = FALSE; |
| 4644 | relocate = FALSE; |
| 4645 | |
| 4646 | outrel.r_addend = addend; |
| 4647 | outrel.r_offset = |
| 4648 | _bfd_elf_section_offset (output_bfd, info, input_section, |
| 4649 | rel->r_offset); |
| 4650 | if (outrel.r_offset == (bfd_vma) -1) |
| 4651 | skip = TRUE; |
| 4652 | else if (outrel.r_offset == (bfd_vma) -2) |
| 4653 | skip = TRUE, relocate = TRUE; |
| 4654 | outrel.r_offset += (input_section->output_section->vma |
| 4655 | + input_section->output_offset); |
| 4656 | |
| 4657 | if (skip) |
| 4658 | memset (&outrel, 0, sizeof outrel); |
| 4659 | else if (h != NULL |
| 4660 | && h->dynindx != -1 |
| 4661 | && (!info->shared |
| 4662 | || !info->symbolic |
| 4663 | || !h->def_regular)) |
| 4664 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
| 4665 | else |
| 4666 | { |
| 4667 | int symbol; |
| 4668 | |
| 4669 | /* This symbol is local, or marked to become local. */ |
| 4670 | if (sym_flags == STT_ARM_TFUNC) |
| 4671 | value |= 1; |
| 4672 | if (globals->symbian_p) |
| 4673 | { |
| 4674 | asection *osec; |
| 4675 | |
| 4676 | /* On Symbian OS, the data segment and text segement |
| 4677 | can be relocated independently. Therefore, we |
| 4678 | must indicate the segment to which this |
| 4679 | relocation is relative. The BPABI allows us to |
| 4680 | use any symbol in the right segment; we just use |
| 4681 | the section symbol as it is convenient. (We |
| 4682 | cannot use the symbol given by "h" directly as it |
| 4683 | will not appear in the dynamic symbol table.) |
| 4684 | |
| 4685 | Note that the dynamic linker ignores the section |
| 4686 | symbol value, so we don't subtract osec->vma |
| 4687 | from the emitted reloc addend. */ |
| 4688 | if (sym_sec) |
| 4689 | osec = sym_sec->output_section; |
| 4690 | else |
| 4691 | osec = input_section->output_section; |
| 4692 | symbol = elf_section_data (osec)->dynindx; |
| 4693 | if (symbol == 0) |
| 4694 | { |
| 4695 | struct elf_link_hash_table *htab = elf_hash_table (info); |
| 4696 | |
| 4697 | if ((osec->flags & SEC_READONLY) == 0 |
| 4698 | && htab->data_index_section != NULL) |
| 4699 | osec = htab->data_index_section; |
| 4700 | else |
| 4701 | osec = htab->text_index_section; |
| 4702 | symbol = elf_section_data (osec)->dynindx; |
| 4703 | } |
| 4704 | BFD_ASSERT (symbol != 0); |
| 4705 | } |
| 4706 | else |
| 4707 | /* On SVR4-ish systems, the dynamic loader cannot |
| 4708 | relocate the text and data segments independently, |
| 4709 | so the symbol does not matter. */ |
| 4710 | symbol = 0; |
| 4711 | outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE); |
| 4712 | if (globals->use_rel) |
| 4713 | relocate = TRUE; |
| 4714 | else |
| 4715 | outrel.r_addend += value; |
| 4716 | } |
| 4717 | |
| 4718 | loc = sreloc->contents; |
| 4719 | loc += sreloc->reloc_count++ * RELOC_SIZE (globals); |
| 4720 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); |
| 4721 | |
| 4722 | /* If this reloc is against an external symbol, we do not want to |
| 4723 | fiddle with the addend. Otherwise, we need to include the symbol |
| 4724 | value so that it becomes an addend for the dynamic reloc. */ |
| 4725 | if (! relocate) |
| 4726 | return bfd_reloc_ok; |
| 4727 | |
| 4728 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 4729 | contents, rel->r_offset, value, |
| 4730 | (bfd_vma) 0); |
| 4731 | } |
| 4732 | else switch (r_type) |
| 4733 | { |
| 4734 | case R_ARM_ABS12: |
| 4735 | return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); |
| 4736 | |
| 4737 | case R_ARM_XPC25: /* Arm BLX instruction. */ |
| 4738 | case R_ARM_CALL: |
| 4739 | case R_ARM_JUMP24: |
| 4740 | case R_ARM_PC24: /* Arm B/BL instruction */ |
| 4741 | case R_ARM_PLT32: |
| 4742 | if (r_type == R_ARM_XPC25) |
| 4743 | { |
| 4744 | /* Check for Arm calling Arm function. */ |
| 4745 | /* FIXME: Should we translate the instruction into a BL |
| 4746 | instruction instead ? */ |
| 4747 | if (sym_flags != STT_ARM_TFUNC) |
| 4748 | (*_bfd_error_handler) |
| 4749 | (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."), |
| 4750 | input_bfd, |
| 4751 | h ? h->root.root.string : "(local)"); |
| 4752 | } |
| 4753 | else if (r_type != R_ARM_CALL || !globals->use_blx) |
| 4754 | { |
| 4755 | /* Check for Arm calling Thumb function. */ |
| 4756 | if (sym_flags == STT_ARM_TFUNC) |
| 4757 | { |
| 4758 | if (elf32_arm_to_thumb_stub (info, sym_name, input_bfd, |
| 4759 | output_bfd, input_section, |
| 4760 | hit_data, sym_sec, rel->r_offset, |
| 4761 | signed_addend, value, |
| 4762 | error_message)) |
| 4763 | return bfd_reloc_ok; |
| 4764 | else |
| 4765 | return bfd_reloc_dangerous; |
| 4766 | } |
| 4767 | } |
| 4768 | |
| 4769 | /* The ARM ELF ABI says that this reloc is computed as: S - P + A |
| 4770 | where: |
| 4771 | S is the address of the symbol in the relocation. |
| 4772 | P is address of the instruction being relocated. |
| 4773 | A is the addend (extracted from the instruction) in bytes. |
| 4774 | |
| 4775 | S is held in 'value'. |
| 4776 | P is the base address of the section containing the |
| 4777 | instruction plus the offset of the reloc into that |
| 4778 | section, ie: |
| 4779 | (input_section->output_section->vma + |
| 4780 | input_section->output_offset + |
| 4781 | rel->r_offset). |
| 4782 | A is the addend, converted into bytes, ie: |
| 4783 | (signed_addend * 4) |
| 4784 | |
| 4785 | Note: None of these operations have knowledge of the pipeline |
| 4786 | size of the processor, thus it is up to the assembler to |
| 4787 | encode this information into the addend. */ |
| 4788 | value -= (input_section->output_section->vma |
| 4789 | + input_section->output_offset); |
| 4790 | value -= rel->r_offset; |
| 4791 | if (globals->use_rel) |
| 4792 | value += (signed_addend << howto->size); |
| 4793 | else |
| 4794 | /* RELA addends do not have to be adjusted by howto->size. */ |
| 4795 | value += signed_addend; |
| 4796 | |
| 4797 | signed_addend = value; |
| 4798 | signed_addend >>= howto->rightshift; |
| 4799 | |
| 4800 | /* A branch to an undefined weak symbol is turned into a jump to |
| 4801 | the next instruction. */ |
| 4802 | if (h && h->root.type == bfd_link_hash_undefweak) |
| 4803 | { |
| 4804 | value = (bfd_get_32 (input_bfd, hit_data) & 0xf0000000) |
| 4805 | | 0x0affffff; |
| 4806 | } |
| 4807 | else |
| 4808 | { |
| 4809 | /* Perform a signed range check. */ |
| 4810 | if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1)) |
| 4811 | || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1))) |
| 4812 | return bfd_reloc_overflow; |
| 4813 | |
| 4814 | addend = (value & 2); |
| 4815 | |
| 4816 | value = (signed_addend & howto->dst_mask) |
| 4817 | | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask)); |
| 4818 | |
| 4819 | /* Set the H bit in the BLX instruction. */ |
| 4820 | if (sym_flags == STT_ARM_TFUNC) |
| 4821 | { |
| 4822 | if (addend) |
| 4823 | value |= (1 << 24); |
| 4824 | else |
| 4825 | value &= ~(bfd_vma)(1 << 24); |
| 4826 | } |
| 4827 | if (r_type == R_ARM_CALL) |
| 4828 | { |
| 4829 | /* Select the correct instruction (BL or BLX). */ |
| 4830 | if (sym_flags == STT_ARM_TFUNC) |
| 4831 | value |= (1 << 28); |
| 4832 | else |
| 4833 | { |
| 4834 | value &= ~(bfd_vma)(1 << 28); |
| 4835 | value |= (1 << 24); |
| 4836 | } |
| 4837 | } |
| 4838 | } |
| 4839 | break; |
| 4840 | |
| 4841 | case R_ARM_ABS32: |
| 4842 | value += addend; |
| 4843 | if (sym_flags == STT_ARM_TFUNC) |
| 4844 | value |= 1; |
| 4845 | break; |
| 4846 | |
| 4847 | case R_ARM_ABS32_NOI: |
| 4848 | value += addend; |
| 4849 | break; |
| 4850 | |
| 4851 | case R_ARM_REL32: |
| 4852 | value += addend; |
| 4853 | if (sym_flags == STT_ARM_TFUNC) |
| 4854 | value |= 1; |
| 4855 | value -= (input_section->output_section->vma |
| 4856 | + input_section->output_offset + rel->r_offset); |
| 4857 | break; |
| 4858 | |
| 4859 | case R_ARM_REL32_NOI: |
| 4860 | value += addend; |
| 4861 | value -= (input_section->output_section->vma |
| 4862 | + input_section->output_offset + rel->r_offset); |
| 4863 | break; |
| 4864 | |
| 4865 | case R_ARM_PREL31: |
| 4866 | value -= (input_section->output_section->vma |
| 4867 | + input_section->output_offset + rel->r_offset); |
| 4868 | value += signed_addend; |
| 4869 | if (! h || h->root.type != bfd_link_hash_undefweak) |
| 4870 | { |
| 4871 | /* Check for overflow */ |
| 4872 | if ((value ^ (value >> 1)) & (1 << 30)) |
| 4873 | return bfd_reloc_overflow; |
| 4874 | } |
| 4875 | value &= 0x7fffffff; |
| 4876 | value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000); |
| 4877 | if (sym_flags == STT_ARM_TFUNC) |
| 4878 | value |= 1; |
| 4879 | break; |
| 4880 | } |
| 4881 | |
| 4882 | bfd_put_32 (input_bfd, value, hit_data); |
| 4883 | return bfd_reloc_ok; |
| 4884 | |
| 4885 | case R_ARM_ABS8: |
| 4886 | value += addend; |
| 4887 | if ((long) value > 0x7f || (long) value < -0x80) |
| 4888 | return bfd_reloc_overflow; |
| 4889 | |
| 4890 | bfd_put_8 (input_bfd, value, hit_data); |
| 4891 | return bfd_reloc_ok; |
| 4892 | |
| 4893 | case R_ARM_ABS16: |
| 4894 | value += addend; |
| 4895 | |
| 4896 | if ((long) value > 0x7fff || (long) value < -0x8000) |
| 4897 | return bfd_reloc_overflow; |
| 4898 | |
| 4899 | bfd_put_16 (input_bfd, value, hit_data); |
| 4900 | return bfd_reloc_ok; |
| 4901 | |
| 4902 | case R_ARM_THM_ABS5: |
| 4903 | /* Support ldr and str instructions for the thumb. */ |
| 4904 | if (globals->use_rel) |
| 4905 | { |
| 4906 | /* Need to refetch addend. */ |
| 4907 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; |
| 4908 | /* ??? Need to determine shift amount from operand size. */ |
| 4909 | addend >>= howto->rightshift; |
| 4910 | } |
| 4911 | value += addend; |
| 4912 | |
| 4913 | /* ??? Isn't value unsigned? */ |
| 4914 | if ((long) value > 0x1f || (long) value < -0x10) |
| 4915 | return bfd_reloc_overflow; |
| 4916 | |
| 4917 | /* ??? Value needs to be properly shifted into place first. */ |
| 4918 | value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f; |
| 4919 | bfd_put_16 (input_bfd, value, hit_data); |
| 4920 | return bfd_reloc_ok; |
| 4921 | |
| 4922 | case R_ARM_THM_ALU_PREL_11_0: |
| 4923 | /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */ |
| 4924 | { |
| 4925 | bfd_vma insn; |
| 4926 | bfd_signed_vma relocation; |
| 4927 | |
| 4928 | insn = (bfd_get_16 (input_bfd, hit_data) << 16) |
| 4929 | | bfd_get_16 (input_bfd, hit_data + 2); |
| 4930 | |
| 4931 | if (globals->use_rel) |
| 4932 | { |
| 4933 | signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4) |
| 4934 | | ((insn & (1 << 26)) >> 15); |
| 4935 | if (insn & 0xf00000) |
| 4936 | signed_addend = -signed_addend; |
| 4937 | } |
| 4938 | |
| 4939 | relocation = value + signed_addend; |
| 4940 | relocation -= (input_section->output_section->vma |
| 4941 | + input_section->output_offset |
| 4942 | + rel->r_offset); |
| 4943 | |
| 4944 | value = abs (relocation); |
| 4945 | |
| 4946 | if (value >= 0x1000) |
| 4947 | return bfd_reloc_overflow; |
| 4948 | |
| 4949 | insn = (insn & 0xfb0f8f00) | (value & 0xff) |
| 4950 | | ((value & 0x700) << 4) |
| 4951 | | ((value & 0x800) << 15); |
| 4952 | if (relocation < 0) |
| 4953 | insn |= 0xa00000; |
| 4954 | |
| 4955 | bfd_put_16 (input_bfd, insn >> 16, hit_data); |
| 4956 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); |
| 4957 | |
| 4958 | return bfd_reloc_ok; |
| 4959 | } |
| 4960 | |
| 4961 | case R_ARM_THM_PC12: |
| 4962 | /* Corresponds to: ldr.w reg, [pc, #offset]. */ |
| 4963 | { |
| 4964 | bfd_vma insn; |
| 4965 | bfd_signed_vma relocation; |
| 4966 | |
| 4967 | insn = (bfd_get_16 (input_bfd, hit_data) << 16) |
| 4968 | | bfd_get_16 (input_bfd, hit_data + 2); |
| 4969 | |
| 4970 | if (globals->use_rel) |
| 4971 | { |
| 4972 | signed_addend = insn & 0xfff; |
| 4973 | if (!(insn & (1 << 23))) |
| 4974 | signed_addend = -signed_addend; |
| 4975 | } |
| 4976 | |
| 4977 | relocation = value + signed_addend; |
| 4978 | relocation -= (input_section->output_section->vma |
| 4979 | + input_section->output_offset |
| 4980 | + rel->r_offset); |
| 4981 | |
| 4982 | value = abs (relocation); |
| 4983 | |
| 4984 | if (value >= 0x1000) |
| 4985 | return bfd_reloc_overflow; |
| 4986 | |
| 4987 | insn = (insn & 0xff7ff000) | value; |
| 4988 | if (relocation >= 0) |
| 4989 | insn |= (1 << 23); |
| 4990 | |
| 4991 | bfd_put_16 (input_bfd, insn >> 16, hit_data); |
| 4992 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); |
| 4993 | |
| 4994 | return bfd_reloc_ok; |
| 4995 | } |
| 4996 | |
| 4997 | case R_ARM_THM_XPC22: |
| 4998 | case R_ARM_THM_CALL: |
| 4999 | /* Thumb BL (branch long instruction). */ |
| 5000 | { |
| 5001 | bfd_vma relocation; |
| 5002 | bfd_vma reloc_sign; |
| 5003 | bfd_boolean overflow = FALSE; |
| 5004 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); |
| 5005 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); |
| 5006 | bfd_signed_vma reloc_signed_max; |
| 5007 | bfd_signed_vma reloc_signed_min; |
| 5008 | bfd_vma check; |
| 5009 | bfd_signed_vma signed_check; |
| 5010 | int bitsize; |
| 5011 | int thumb2 = using_thumb2 (globals); |
| 5012 | |
| 5013 | /* A branch to an undefined weak symbol is turned into a jump to |
| 5014 | the next instruction. */ |
| 5015 | if (h && h->root.type == bfd_link_hash_undefweak) |
| 5016 | { |
| 5017 | bfd_put_16 (input_bfd, 0xe000, hit_data); |
| 5018 | bfd_put_16 (input_bfd, 0xbf00, hit_data + 2); |
| 5019 | return bfd_reloc_ok; |
| 5020 | } |
| 5021 | |
| 5022 | /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible |
| 5023 | with Thumb-1) involving the J1 and J2 bits. */ |
| 5024 | if (globals->use_rel) |
| 5025 | { |
| 5026 | bfd_vma s = (upper_insn & (1 << 10)) >> 10; |
| 5027 | bfd_vma upper = upper_insn & 0x3ff; |
| 5028 | bfd_vma lower = lower_insn & 0x7ff; |
| 5029 | bfd_vma j1 = (lower_insn & (1 << 13)) >> 13; |
| 5030 | bfd_vma j2 = (lower_insn & (1 << 11)) >> 11; |
| 5031 | bfd_vma i1 = j1 ^ s ? 0 : 1; |
| 5032 | bfd_vma i2 = j2 ^ s ? 0 : 1; |
| 5033 | |
| 5034 | addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1); |
| 5035 | /* Sign extend. */ |
| 5036 | addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24); |
| 5037 | |
| 5038 | signed_addend = addend; |
| 5039 | } |
| 5040 | |
| 5041 | if (r_type == R_ARM_THM_XPC22) |
| 5042 | { |
| 5043 | /* Check for Thumb to Thumb call. */ |
| 5044 | /* FIXME: Should we translate the instruction into a BL |
| 5045 | instruction instead ? */ |
| 5046 | if (sym_flags == STT_ARM_TFUNC) |
| 5047 | (*_bfd_error_handler) |
| 5048 | (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."), |
| 5049 | input_bfd, |
| 5050 | h ? h->root.root.string : "(local)"); |
| 5051 | } |
| 5052 | else |
| 5053 | { |
| 5054 | /* If it is not a call to Thumb, assume call to Arm. |
| 5055 | If it is a call relative to a section name, then it is not a |
| 5056 | function call at all, but rather a long jump. Calls through |
| 5057 | the PLT do not require stubs. */ |
| 5058 | if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION |
| 5059 | && (h == NULL || splt == NULL |
| 5060 | || h->plt.offset == (bfd_vma) -1)) |
| 5061 | { |
| 5062 | if (globals->use_blx) |
| 5063 | { |
| 5064 | /* Convert BL to BLX. */ |
| 5065 | lower_insn = (lower_insn & ~0x1000) | 0x0800; |
| 5066 | } |
| 5067 | else if (elf32_thumb_to_arm_stub |
| 5068 | (info, sym_name, input_bfd, output_bfd, input_section, |
| 5069 | hit_data, sym_sec, rel->r_offset, signed_addend, value, |
| 5070 | error_message)) |
| 5071 | return bfd_reloc_ok; |
| 5072 | else |
| 5073 | return bfd_reloc_dangerous; |
| 5074 | } |
| 5075 | else if (sym_flags == STT_ARM_TFUNC && globals->use_blx) |
| 5076 | { |
| 5077 | /* Make sure this is a BL. */ |
| 5078 | lower_insn |= 0x1800; |
| 5079 | } |
| 5080 | } |
| 5081 | |
| 5082 | /* Handle calls via the PLT. */ |
| 5083 | if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) |
| 5084 | { |
| 5085 | value = (splt->output_section->vma |
| 5086 | + splt->output_offset |
| 5087 | + h->plt.offset); |
| 5088 | if (globals->use_blx) |
| 5089 | { |
| 5090 | /* If the Thumb BLX instruction is available, convert the |
| 5091 | BL to a BLX instruction to call the ARM-mode PLT entry. */ |
| 5092 | lower_insn = (lower_insn & ~0x1000) | 0x0800; |
| 5093 | } |
| 5094 | else |
| 5095 | /* Target the Thumb stub before the ARM PLT entry. */ |
| 5096 | value -= PLT_THUMB_STUB_SIZE; |
| 5097 | *unresolved_reloc_p = FALSE; |
| 5098 | } |
| 5099 | |
| 5100 | relocation = value + signed_addend; |
| 5101 | |
| 5102 | relocation -= (input_section->output_section->vma |
| 5103 | + input_section->output_offset |
| 5104 | + rel->r_offset); |
| 5105 | |
| 5106 | check = relocation >> howto->rightshift; |
| 5107 | |
| 5108 | /* If this is a signed value, the rightshift just dropped |
| 5109 | leading 1 bits (assuming twos complement). */ |
| 5110 | if ((bfd_signed_vma) relocation >= 0) |
| 5111 | signed_check = check; |
| 5112 | else |
| 5113 | signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); |
| 5114 | |
| 5115 | /* Calculate the permissable maximum and minimum values for |
| 5116 | this relocation according to whether we're relocating for |
| 5117 | Thumb-2 or not. */ |
| 5118 | bitsize = howto->bitsize; |
| 5119 | if (!thumb2) |
| 5120 | bitsize -= 2; |
| 5121 | reloc_signed_max = ((1 << (bitsize - 1)) - 1) >> howto->rightshift; |
| 5122 | reloc_signed_min = ~reloc_signed_max; |
| 5123 | |
| 5124 | /* Assumes two's complement. */ |
| 5125 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
| 5126 | overflow = TRUE; |
| 5127 | |
| 5128 | if ((lower_insn & 0x1800) == 0x0800) |
| 5129 | /* For a BLX instruction, make sure that the relocation is rounded up |
| 5130 | to a word boundary. This follows the semantics of the instruction |
| 5131 | which specifies that bit 1 of the target address will come from bit |
| 5132 | 1 of the base address. */ |
| 5133 | relocation = (relocation + 2) & ~ 3; |
| 5134 | |
| 5135 | /* Put RELOCATION back into the insn. Assumes two's complement. |
| 5136 | We use the Thumb-2 encoding, which is safe even if dealing with |
| 5137 | a Thumb-1 instruction by virtue of our overflow check above. */ |
| 5138 | reloc_sign = (signed_check < 0) ? 1 : 0; |
| 5139 | upper_insn = (upper_insn & ~(bfd_vma) 0x7ff) |
| 5140 | | ((relocation >> 12) & 0x3ff) |
| 5141 | | (reloc_sign << 10); |
| 5142 | lower_insn = (lower_insn & ~(bfd_vma) 0x2fff) |
| 5143 | | (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13) |
| 5144 | | (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11) |
| 5145 | | ((relocation >> 1) & 0x7ff); |
| 5146 | |
| 5147 | /* Put the relocated value back in the object file: */ |
| 5148 | bfd_put_16 (input_bfd, upper_insn, hit_data); |
| 5149 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); |
| 5150 | |
| 5151 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); |
| 5152 | } |
| 5153 | break; |
| 5154 | |
| 5155 | case R_ARM_THM_JUMP24: |
| 5156 | /* Thumb32 unconditional branch instruction. */ |
| 5157 | { |
| 5158 | bfd_vma relocation; |
| 5159 | bfd_boolean overflow = FALSE; |
| 5160 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); |
| 5161 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); |
| 5162 | bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift; |
| 5163 | bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; |
| 5164 | bfd_vma check; |
| 5165 | bfd_signed_vma signed_check; |
| 5166 | |
| 5167 | /* Need to refetch the addend, reconstruct the top three bits, and glue the |
| 5168 | two pieces together. */ |
| 5169 | if (globals->use_rel) |
| 5170 | { |
| 5171 | bfd_vma S = (upper_insn & 0x0400) >> 10; |
| 5172 | bfd_vma hi = (upper_insn & 0x03ff); |
| 5173 | bfd_vma I1 = (lower_insn & 0x2000) >> 13; |
| 5174 | bfd_vma I2 = (lower_insn & 0x0800) >> 11; |
| 5175 | bfd_vma lo = (lower_insn & 0x07ff); |
| 5176 | |
| 5177 | I1 = !(I1 ^ S); |
| 5178 | I2 = !(I2 ^ S); |
| 5179 | S = !S; |
| 5180 | |
| 5181 | signed_addend = (S << 24) | (I1 << 23) | (I2 << 22) | (hi << 12) | (lo << 1); |
| 5182 | signed_addend -= (1 << 24); /* Sign extend. */ |
| 5183 | } |
| 5184 | |
| 5185 | /* ??? Should handle interworking? GCC might someday try to |
| 5186 | use this for tail calls. */ |
| 5187 | |
| 5188 | relocation = value + signed_addend; |
| 5189 | relocation -= (input_section->output_section->vma |
| 5190 | + input_section->output_offset |
| 5191 | + rel->r_offset); |
| 5192 | |
| 5193 | check = relocation >> howto->rightshift; |
| 5194 | |
| 5195 | /* If this is a signed value, the rightshift just dropped |
| 5196 | leading 1 bits (assuming twos complement). */ |
| 5197 | if ((bfd_signed_vma) relocation >= 0) |
| 5198 | signed_check = check; |
| 5199 | else |
| 5200 | signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); |
| 5201 | |
| 5202 | /* Assumes two's complement. */ |
| 5203 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
| 5204 | overflow = TRUE; |
| 5205 | |
| 5206 | /* Put RELOCATION back into the insn. */ |
| 5207 | { |
| 5208 | bfd_vma S = (relocation & 0x01000000) >> 24; |
| 5209 | bfd_vma I1 = (relocation & 0x00800000) >> 23; |
| 5210 | bfd_vma I2 = (relocation & 0x00400000) >> 22; |
| 5211 | bfd_vma hi = (relocation & 0x003ff000) >> 12; |
| 5212 | bfd_vma lo = (relocation & 0x00000ffe) >> 1; |
| 5213 | |
| 5214 | I1 = !(I1 ^ S); |
| 5215 | I2 = !(I2 ^ S); |
| 5216 | |
| 5217 | upper_insn = (upper_insn & (bfd_vma) 0xf800) | (S << 10) | hi; |
| 5218 | lower_insn = (lower_insn & (bfd_vma) 0xd000) | (I1 << 13) | (I2 << 11) | lo; |
| 5219 | } |
| 5220 | |
| 5221 | /* Put the relocated value back in the object file: */ |
| 5222 | bfd_put_16 (input_bfd, upper_insn, hit_data); |
| 5223 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); |
| 5224 | |
| 5225 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); |
| 5226 | } |
| 5227 | |
| 5228 | case R_ARM_THM_JUMP19: |
| 5229 | /* Thumb32 conditional branch instruction. */ |
| 5230 | { |
| 5231 | bfd_vma relocation; |
| 5232 | bfd_boolean overflow = FALSE; |
| 5233 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); |
| 5234 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); |
| 5235 | bfd_signed_vma reloc_signed_max = 0xffffe; |
| 5236 | bfd_signed_vma reloc_signed_min = -0x100000; |
| 5237 | bfd_signed_vma signed_check; |
| 5238 | |
| 5239 | /* Need to refetch the addend, reconstruct the top three bits, |
| 5240 | and squish the two 11 bit pieces together. */ |
| 5241 | if (globals->use_rel) |
| 5242 | { |
| 5243 | bfd_vma S = (upper_insn & 0x0400) >> 10; |
| 5244 | bfd_vma upper = (upper_insn & 0x003f); |
| 5245 | bfd_vma J1 = (lower_insn & 0x2000) >> 13; |
| 5246 | bfd_vma J2 = (lower_insn & 0x0800) >> 11; |
| 5247 | bfd_vma lower = (lower_insn & 0x07ff); |
| 5248 | |
| 5249 | upper |= J1 << 6; |
| 5250 | upper |= J2 << 7; |
| 5251 | upper |= (!S) << 8; |
| 5252 | upper -= 0x0100; /* Sign extend. */ |
| 5253 | |
| 5254 | addend = (upper << 12) | (lower << 1); |
| 5255 | signed_addend = addend; |
| 5256 | } |
| 5257 | |
| 5258 | /* ??? Should handle interworking? GCC might someday try to |
| 5259 | use this for tail calls. */ |
| 5260 | |
| 5261 | relocation = value + signed_addend; |
| 5262 | relocation -= (input_section->output_section->vma |
| 5263 | + input_section->output_offset |
| 5264 | + rel->r_offset); |
| 5265 | signed_check = (bfd_signed_vma) relocation; |
| 5266 | |
| 5267 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
| 5268 | overflow = TRUE; |
| 5269 | |
| 5270 | /* Put RELOCATION back into the insn. */ |
| 5271 | { |
| 5272 | bfd_vma S = (relocation & 0x00100000) >> 20; |
| 5273 | bfd_vma J2 = (relocation & 0x00080000) >> 19; |
| 5274 | bfd_vma J1 = (relocation & 0x00040000) >> 18; |
| 5275 | bfd_vma hi = (relocation & 0x0003f000) >> 12; |
| 5276 | bfd_vma lo = (relocation & 0x00000ffe) >> 1; |
| 5277 | |
| 5278 | upper_insn = (upper_insn & 0xfbc0) | (S << 10) | hi; |
| 5279 | lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo; |
| 5280 | } |
| 5281 | |
| 5282 | /* Put the relocated value back in the object file: */ |
| 5283 | bfd_put_16 (input_bfd, upper_insn, hit_data); |
| 5284 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); |
| 5285 | |
| 5286 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); |
| 5287 | } |
| 5288 | |
| 5289 | case R_ARM_THM_JUMP11: |
| 5290 | case R_ARM_THM_JUMP8: |
| 5291 | case R_ARM_THM_JUMP6: |
| 5292 | /* Thumb B (branch) instruction). */ |
| 5293 | { |
| 5294 | bfd_signed_vma relocation; |
| 5295 | bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1; |
| 5296 | bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; |
| 5297 | bfd_signed_vma signed_check; |
| 5298 | |
| 5299 | /* CZB cannot jump backward. */ |
| 5300 | if (r_type == R_ARM_THM_JUMP6) |
| 5301 | reloc_signed_min = 0; |
| 5302 | |
| 5303 | if (globals->use_rel) |
| 5304 | { |
| 5305 | /* Need to refetch addend. */ |
| 5306 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; |
| 5307 | if (addend & ((howto->src_mask + 1) >> 1)) |
| 5308 | { |
| 5309 | signed_addend = -1; |
| 5310 | signed_addend &= ~ howto->src_mask; |
| 5311 | signed_addend |= addend; |
| 5312 | } |
| 5313 | else |
| 5314 | signed_addend = addend; |
| 5315 | /* The value in the insn has been right shifted. We need to |
| 5316 | undo this, so that we can perform the address calculation |
| 5317 | in terms of bytes. */ |
| 5318 | signed_addend <<= howto->rightshift; |
| 5319 | } |
| 5320 | relocation = value + signed_addend; |
| 5321 | |
| 5322 | relocation -= (input_section->output_section->vma |
| 5323 | + input_section->output_offset |
| 5324 | + rel->r_offset); |
| 5325 | |
| 5326 | relocation >>= howto->rightshift; |
| 5327 | signed_check = relocation; |
| 5328 | |
| 5329 | if (r_type == R_ARM_THM_JUMP6) |
| 5330 | relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3); |
| 5331 | else |
| 5332 | relocation &= howto->dst_mask; |
| 5333 | relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask)); |
| 5334 | |
| 5335 | bfd_put_16 (input_bfd, relocation, hit_data); |
| 5336 | |
| 5337 | /* Assumes two's complement. */ |
| 5338 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
| 5339 | return bfd_reloc_overflow; |
| 5340 | |
| 5341 | return bfd_reloc_ok; |
| 5342 | } |
| 5343 | |
| 5344 | case R_ARM_ALU_PCREL7_0: |
| 5345 | case R_ARM_ALU_PCREL15_8: |
| 5346 | case R_ARM_ALU_PCREL23_15: |
| 5347 | { |
| 5348 | bfd_vma insn; |
| 5349 | bfd_vma relocation; |
| 5350 | |
| 5351 | insn = bfd_get_32 (input_bfd, hit_data); |
| 5352 | if (globals->use_rel) |
| 5353 | { |
| 5354 | /* Extract the addend. */ |
| 5355 | addend = (insn & 0xff) << ((insn & 0xf00) >> 7); |
| 5356 | signed_addend = addend; |
| 5357 | } |
| 5358 | relocation = value + signed_addend; |
| 5359 | |
| 5360 | relocation -= (input_section->output_section->vma |
| 5361 | + input_section->output_offset |
| 5362 | + rel->r_offset); |
| 5363 | insn = (insn & ~0xfff) |
| 5364 | | ((howto->bitpos << 7) & 0xf00) |
| 5365 | | ((relocation >> howto->bitpos) & 0xff); |
| 5366 | bfd_put_32 (input_bfd, value, hit_data); |
| 5367 | } |
| 5368 | return bfd_reloc_ok; |
| 5369 | |
| 5370 | case R_ARM_GNU_VTINHERIT: |
| 5371 | case R_ARM_GNU_VTENTRY: |
| 5372 | return bfd_reloc_ok; |
| 5373 | |
| 5374 | case R_ARM_GOTOFF32: |
| 5375 | /* Relocation is relative to the start of the |
| 5376 | global offset table. */ |
| 5377 | |
| 5378 | BFD_ASSERT (sgot != NULL); |
| 5379 | if (sgot == NULL) |
| 5380 | return bfd_reloc_notsupported; |
| 5381 | |
| 5382 | /* If we are addressing a Thumb function, we need to adjust the |
| 5383 | address by one, so that attempts to call the function pointer will |
| 5384 | correctly interpret it as Thumb code. */ |
| 5385 | if (sym_flags == STT_ARM_TFUNC) |
| 5386 | value += 1; |
| 5387 | |
| 5388 | /* Note that sgot->output_offset is not involved in this |
| 5389 | calculation. We always want the start of .got. If we |
| 5390 | define _GLOBAL_OFFSET_TABLE in a different way, as is |
| 5391 | permitted by the ABI, we might have to change this |
| 5392 | calculation. */ |
| 5393 | value -= sgot->output_section->vma; |
| 5394 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 5395 | contents, rel->r_offset, value, |
| 5396 | rel->r_addend); |
| 5397 | |
| 5398 | case R_ARM_GOTPC: |
| 5399 | /* Use global offset table as symbol value. */ |
| 5400 | BFD_ASSERT (sgot != NULL); |
| 5401 | |
| 5402 | if (sgot == NULL) |
| 5403 | return bfd_reloc_notsupported; |
| 5404 | |
| 5405 | *unresolved_reloc_p = FALSE; |
| 5406 | value = sgot->output_section->vma; |
| 5407 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 5408 | contents, rel->r_offset, value, |
| 5409 | rel->r_addend); |
| 5410 | |
| 5411 | case R_ARM_GOT32: |
| 5412 | case R_ARM_GOT_PREL: |
| 5413 | /* Relocation is to the entry for this symbol in the |
| 5414 | global offset table. */ |
| 5415 | if (sgot == NULL) |
| 5416 | return bfd_reloc_notsupported; |
| 5417 | |
| 5418 | if (h != NULL) |
| 5419 | { |
| 5420 | bfd_vma off; |
| 5421 | bfd_boolean dyn; |
| 5422 | |
| 5423 | off = h->got.offset; |
| 5424 | BFD_ASSERT (off != (bfd_vma) -1); |
| 5425 | dyn = globals->root.dynamic_sections_created; |
| 5426 | |
| 5427 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
| 5428 | || (info->shared |
| 5429 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
| 5430 | || (ELF_ST_VISIBILITY (h->other) |
| 5431 | && h->root.type == bfd_link_hash_undefweak)) |
| 5432 | { |
| 5433 | /* This is actually a static link, or it is a -Bsymbolic link |
| 5434 | and the symbol is defined locally. We must initialize this |
| 5435 | entry in the global offset table. Since the offset must |
| 5436 | always be a multiple of 4, we use the least significant bit |
| 5437 | to record whether we have initialized it already. |
| 5438 | |
| 5439 | When doing a dynamic link, we create a .rel(a).got relocation |
| 5440 | entry to initialize the value. This is done in the |
| 5441 | finish_dynamic_symbol routine. */ |
| 5442 | if ((off & 1) != 0) |
| 5443 | off &= ~1; |
| 5444 | else |
| 5445 | { |
| 5446 | /* If we are addressing a Thumb function, we need to |
| 5447 | adjust the address by one, so that attempts to |
| 5448 | call the function pointer will correctly |
| 5449 | interpret it as Thumb code. */ |
| 5450 | if (sym_flags == STT_ARM_TFUNC) |
| 5451 | value |= 1; |
| 5452 | |
| 5453 | bfd_put_32 (output_bfd, value, sgot->contents + off); |
| 5454 | h->got.offset |= 1; |
| 5455 | } |
| 5456 | } |
| 5457 | else |
| 5458 | *unresolved_reloc_p = FALSE; |
| 5459 | |
| 5460 | value = sgot->output_offset + off; |
| 5461 | } |
| 5462 | else |
| 5463 | { |
| 5464 | bfd_vma off; |
| 5465 | |
| 5466 | BFD_ASSERT (local_got_offsets != NULL && |
| 5467 | local_got_offsets[r_symndx] != (bfd_vma) -1); |
| 5468 | |
| 5469 | off = local_got_offsets[r_symndx]; |
| 5470 | |
| 5471 | /* The offset must always be a multiple of 4. We use the |
| 5472 | least significant bit to record whether we have already |
| 5473 | generated the necessary reloc. */ |
| 5474 | if ((off & 1) != 0) |
| 5475 | off &= ~1; |
| 5476 | else |
| 5477 | { |
| 5478 | /* If we are addressing a Thumb function, we need to |
| 5479 | adjust the address by one, so that attempts to |
| 5480 | call the function pointer will correctly |
| 5481 | interpret it as Thumb code. */ |
| 5482 | if (sym_flags == STT_ARM_TFUNC) |
| 5483 | value |= 1; |
| 5484 | |
| 5485 | if (globals->use_rel) |
| 5486 | bfd_put_32 (output_bfd, value, sgot->contents + off); |
| 5487 | |
| 5488 | if (info->shared) |
| 5489 | { |
| 5490 | asection * srelgot; |
| 5491 | Elf_Internal_Rela outrel; |
| 5492 | bfd_byte *loc; |
| 5493 | |
| 5494 | srelgot = (bfd_get_section_by_name |
| 5495 | (dynobj, RELOC_SECTION (globals, ".got"))); |
| 5496 | BFD_ASSERT (srelgot != NULL); |
| 5497 | |
| 5498 | outrel.r_addend = addend + value; |
| 5499 | outrel.r_offset = (sgot->output_section->vma |
| 5500 | + sgot->output_offset |
| 5501 | + off); |
| 5502 | outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); |
| 5503 | loc = srelgot->contents; |
| 5504 | loc += srelgot->reloc_count++ * RELOC_SIZE (globals); |
| 5505 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); |
| 5506 | } |
| 5507 | |
| 5508 | local_got_offsets[r_symndx] |= 1; |
| 5509 | } |
| 5510 | |
| 5511 | value = sgot->output_offset + off; |
| 5512 | } |
| 5513 | if (r_type != R_ARM_GOT32) |
| 5514 | value += sgot->output_section->vma; |
| 5515 | |
| 5516 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 5517 | contents, rel->r_offset, value, |
| 5518 | rel->r_addend); |
| 5519 | |
| 5520 | case R_ARM_TLS_LDO32: |
| 5521 | value = value - dtpoff_base (info); |
| 5522 | |
| 5523 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 5524 | contents, rel->r_offset, value, |
| 5525 | rel->r_addend); |
| 5526 | |
| 5527 | case R_ARM_TLS_LDM32: |
| 5528 | { |
| 5529 | bfd_vma off; |
| 5530 | |
| 5531 | if (globals->sgot == NULL) |
| 5532 | abort (); |
| 5533 | |
| 5534 | off = globals->tls_ldm_got.offset; |
| 5535 | |
| 5536 | if ((off & 1) != 0) |
| 5537 | off &= ~1; |
| 5538 | else |
| 5539 | { |
| 5540 | /* If we don't know the module number, create a relocation |
| 5541 | for it. */ |
| 5542 | if (info->shared) |
| 5543 | { |
| 5544 | Elf_Internal_Rela outrel; |
| 5545 | bfd_byte *loc; |
| 5546 | |
| 5547 | if (globals->srelgot == NULL) |
| 5548 | abort (); |
| 5549 | |
| 5550 | outrel.r_addend = 0; |
| 5551 | outrel.r_offset = (globals->sgot->output_section->vma |
| 5552 | + globals->sgot->output_offset + off); |
| 5553 | outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32); |
| 5554 | |
| 5555 | if (globals->use_rel) |
| 5556 | bfd_put_32 (output_bfd, outrel.r_addend, |
| 5557 | globals->sgot->contents + off); |
| 5558 | |
| 5559 | loc = globals->srelgot->contents; |
| 5560 | loc += globals->srelgot->reloc_count++ * RELOC_SIZE (globals); |
| 5561 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); |
| 5562 | } |
| 5563 | else |
| 5564 | bfd_put_32 (output_bfd, 1, globals->sgot->contents + off); |
| 5565 | |
| 5566 | globals->tls_ldm_got.offset |= 1; |
| 5567 | } |
| 5568 | |
| 5569 | value = globals->sgot->output_section->vma + globals->sgot->output_offset + off |
| 5570 | - (input_section->output_section->vma + input_section->output_offset + rel->r_offset); |
| 5571 | |
| 5572 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 5573 | contents, rel->r_offset, value, |
| 5574 | rel->r_addend); |
| 5575 | } |
| 5576 | |
| 5577 | case R_ARM_TLS_GD32: |
| 5578 | case R_ARM_TLS_IE32: |
| 5579 | { |
| 5580 | bfd_vma off; |
| 5581 | int indx; |
| 5582 | char tls_type; |
| 5583 | |
| 5584 | if (globals->sgot == NULL) |
| 5585 | abort (); |
| 5586 | |
| 5587 | indx = 0; |
| 5588 | if (h != NULL) |
| 5589 | { |
| 5590 | bfd_boolean dyn; |
| 5591 | dyn = globals->root.dynamic_sections_created; |
| 5592 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
| 5593 | && (!info->shared |
| 5594 | || !SYMBOL_REFERENCES_LOCAL (info, h))) |
| 5595 | { |
| 5596 | *unresolved_reloc_p = FALSE; |
| 5597 | indx = h->dynindx; |
| 5598 | } |
| 5599 | off = h->got.offset; |
| 5600 | tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type; |
| 5601 | } |
| 5602 | else |
| 5603 | { |
| 5604 | if (local_got_offsets == NULL) |
| 5605 | abort (); |
| 5606 | off = local_got_offsets[r_symndx]; |
| 5607 | tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx]; |
| 5608 | } |
| 5609 | |
| 5610 | if (tls_type == GOT_UNKNOWN) |
| 5611 | abort (); |
| 5612 | |
| 5613 | if ((off & 1) != 0) |
| 5614 | off &= ~1; |
| 5615 | else |
| 5616 | { |
| 5617 | bfd_boolean need_relocs = FALSE; |
| 5618 | Elf_Internal_Rela outrel; |
| 5619 | bfd_byte *loc = NULL; |
| 5620 | int cur_off = off; |
| 5621 | |
| 5622 | /* The GOT entries have not been initialized yet. Do it |
| 5623 | now, and emit any relocations. If both an IE GOT and a |
| 5624 | GD GOT are necessary, we emit the GD first. */ |
| 5625 | |
| 5626 | if ((info->shared || indx != 0) |
| 5627 | && (h == NULL |
| 5628 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
| 5629 | || h->root.type != bfd_link_hash_undefweak)) |
| 5630 | { |
| 5631 | need_relocs = TRUE; |
| 5632 | if (globals->srelgot == NULL) |
| 5633 | abort (); |
| 5634 | loc = globals->srelgot->contents; |
| 5635 | loc += globals->srelgot->reloc_count * RELOC_SIZE (globals); |
| 5636 | } |
| 5637 | |
| 5638 | if (tls_type & GOT_TLS_GD) |
| 5639 | { |
| 5640 | if (need_relocs) |
| 5641 | { |
| 5642 | outrel.r_addend = 0; |
| 5643 | outrel.r_offset = (globals->sgot->output_section->vma |
| 5644 | + globals->sgot->output_offset |
| 5645 | + cur_off); |
| 5646 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32); |
| 5647 | |
| 5648 | if (globals->use_rel) |
| 5649 | bfd_put_32 (output_bfd, outrel.r_addend, |
| 5650 | globals->sgot->contents + cur_off); |
| 5651 | |
| 5652 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); |
| 5653 | globals->srelgot->reloc_count++; |
| 5654 | loc += RELOC_SIZE (globals); |
| 5655 | |
| 5656 | if (indx == 0) |
| 5657 | bfd_put_32 (output_bfd, value - dtpoff_base (info), |
| 5658 | globals->sgot->contents + cur_off + 4); |
| 5659 | else |
| 5660 | { |
| 5661 | outrel.r_addend = 0; |
| 5662 | outrel.r_info = ELF32_R_INFO (indx, |
| 5663 | R_ARM_TLS_DTPOFF32); |
| 5664 | outrel.r_offset += 4; |
| 5665 | |
| 5666 | if (globals->use_rel) |
| 5667 | bfd_put_32 (output_bfd, outrel.r_addend, |
| 5668 | globals->sgot->contents + cur_off + 4); |
| 5669 | |
| 5670 | |
| 5671 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); |
| 5672 | globals->srelgot->reloc_count++; |
| 5673 | loc += RELOC_SIZE (globals); |
| 5674 | } |
| 5675 | } |
| 5676 | else |
| 5677 | { |
| 5678 | /* If we are not emitting relocations for a |
| 5679 | general dynamic reference, then we must be in a |
| 5680 | static link or an executable link with the |
| 5681 | symbol binding locally. Mark it as belonging |
| 5682 | to module 1, the executable. */ |
| 5683 | bfd_put_32 (output_bfd, 1, |
| 5684 | globals->sgot->contents + cur_off); |
| 5685 | bfd_put_32 (output_bfd, value - dtpoff_base (info), |
| 5686 | globals->sgot->contents + cur_off + 4); |
| 5687 | } |
| 5688 | |
| 5689 | cur_off += 8; |
| 5690 | } |
| 5691 | |
| 5692 | if (tls_type & GOT_TLS_IE) |
| 5693 | { |
| 5694 | if (need_relocs) |
| 5695 | { |
| 5696 | if (indx == 0) |
| 5697 | outrel.r_addend = value - dtpoff_base (info); |
| 5698 | else |
| 5699 | outrel.r_addend = 0; |
| 5700 | outrel.r_offset = (globals->sgot->output_section->vma |
| 5701 | + globals->sgot->output_offset |
| 5702 | + cur_off); |
| 5703 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32); |
| 5704 | |
| 5705 | if (globals->use_rel) |
| 5706 | bfd_put_32 (output_bfd, outrel.r_addend, |
| 5707 | globals->sgot->contents + cur_off); |
| 5708 | |
| 5709 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); |
| 5710 | globals->srelgot->reloc_count++; |
| 5711 | loc += RELOC_SIZE (globals); |
| 5712 | } |
| 5713 | else |
| 5714 | bfd_put_32 (output_bfd, tpoff (info, value), |
| 5715 | globals->sgot->contents + cur_off); |
| 5716 | cur_off += 4; |
| 5717 | } |
| 5718 | |
| 5719 | if (h != NULL) |
| 5720 | h->got.offset |= 1; |
| 5721 | else |
| 5722 | local_got_offsets[r_symndx] |= 1; |
| 5723 | } |
| 5724 | |
| 5725 | if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32) |
| 5726 | off += 8; |
| 5727 | value = globals->sgot->output_section->vma + globals->sgot->output_offset + off |
| 5728 | - (input_section->output_section->vma + input_section->output_offset + rel->r_offset); |
| 5729 | |
| 5730 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 5731 | contents, rel->r_offset, value, |
| 5732 | rel->r_addend); |
| 5733 | } |
| 5734 | |
| 5735 | case R_ARM_TLS_LE32: |
| 5736 | if (info->shared) |
| 5737 | { |
| 5738 | (*_bfd_error_handler) |
| 5739 | (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"), |
| 5740 | input_bfd, input_section, |
| 5741 | (long) rel->r_offset, howto->name); |
| 5742 | return FALSE; |
| 5743 | } |
| 5744 | else |
| 5745 | value = tpoff (info, value); |
| 5746 | |
| 5747 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 5748 | contents, rel->r_offset, value, |
| 5749 | rel->r_addend); |
| 5750 | |
| 5751 | case R_ARM_V4BX: |
| 5752 | if (globals->fix_v4bx) |
| 5753 | { |
| 5754 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); |
| 5755 | |
| 5756 | /* Ensure that we have a BX instruction. */ |
| 5757 | BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10); |
| 5758 | |
| 5759 | /* Preserve Rm (lowest four bits) and the condition code |
| 5760 | (highest four bits). Other bits encode MOV PC,Rm. */ |
| 5761 | insn = (insn & 0xf000000f) | 0x01a0f000; |
| 5762 | |
| 5763 | bfd_put_32 (input_bfd, insn, hit_data); |
| 5764 | } |
| 5765 | return bfd_reloc_ok; |
| 5766 | |
| 5767 | case R_ARM_MOVW_ABS_NC: |
| 5768 | case R_ARM_MOVT_ABS: |
| 5769 | case R_ARM_MOVW_PREL_NC: |
| 5770 | case R_ARM_MOVT_PREL: |
| 5771 | /* Until we properly support segment-base-relative addressing then |
| 5772 | we assume the segment base to be zero, as for the group relocations. |
| 5773 | Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC |
| 5774 | and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */ |
| 5775 | case R_ARM_MOVW_BREL_NC: |
| 5776 | case R_ARM_MOVW_BREL: |
| 5777 | case R_ARM_MOVT_BREL: |
| 5778 | { |
| 5779 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); |
| 5780 | |
| 5781 | if (globals->use_rel) |
| 5782 | { |
| 5783 | addend = ((insn >> 4) & 0xf000) | (insn & 0xfff); |
| 5784 | signed_addend = (addend ^ 0x10000) - 0x10000; |
| 5785 | } |
| 5786 | |
| 5787 | value += signed_addend; |
| 5788 | |
| 5789 | if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL) |
| 5790 | value -= (input_section->output_section->vma |
| 5791 | + input_section->output_offset + rel->r_offset); |
| 5792 | |
| 5793 | if (r_type == R_ARM_MOVW_BREL && value >= 0x10000) |
| 5794 | return bfd_reloc_overflow; |
| 5795 | |
| 5796 | if (sym_flags == STT_ARM_TFUNC) |
| 5797 | value |= 1; |
| 5798 | |
| 5799 | if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL |
| 5800 | || r_type == R_ARM_MOVT_BREL) |
| 5801 | value >>= 16; |
| 5802 | |
| 5803 | insn &= 0xfff0f000; |
| 5804 | insn |= value & 0xfff; |
| 5805 | insn |= (value & 0xf000) << 4; |
| 5806 | bfd_put_32 (input_bfd, insn, hit_data); |
| 5807 | } |
| 5808 | return bfd_reloc_ok; |
| 5809 | |
| 5810 | case R_ARM_THM_MOVW_ABS_NC: |
| 5811 | case R_ARM_THM_MOVT_ABS: |
| 5812 | case R_ARM_THM_MOVW_PREL_NC: |
| 5813 | case R_ARM_THM_MOVT_PREL: |
| 5814 | /* Until we properly support segment-base-relative addressing then |
| 5815 | we assume the segment base to be zero, as for the above relocations. |
| 5816 | Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as |
| 5817 | R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics |
| 5818 | as R_ARM_THM_MOVT_ABS. */ |
| 5819 | case R_ARM_THM_MOVW_BREL_NC: |
| 5820 | case R_ARM_THM_MOVW_BREL: |
| 5821 | case R_ARM_THM_MOVT_BREL: |
| 5822 | { |
| 5823 | bfd_vma insn; |
| 5824 | |
| 5825 | insn = bfd_get_16 (input_bfd, hit_data) << 16; |
| 5826 | insn |= bfd_get_16 (input_bfd, hit_data + 2); |
| 5827 | |
| 5828 | if (globals->use_rel) |
| 5829 | { |
| 5830 | addend = ((insn >> 4) & 0xf000) |
| 5831 | | ((insn >> 15) & 0x0800) |
| 5832 | | ((insn >> 4) & 0x0700) |
| 5833 | | (insn & 0x00ff); |
| 5834 | signed_addend = (addend ^ 0x10000) - 0x10000; |
| 5835 | } |
| 5836 | |
| 5837 | value += signed_addend; |
| 5838 | |
| 5839 | if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL) |
| 5840 | value -= (input_section->output_section->vma |
| 5841 | + input_section->output_offset + rel->r_offset); |
| 5842 | |
| 5843 | if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000) |
| 5844 | return bfd_reloc_overflow; |
| 5845 | |
| 5846 | if (sym_flags == STT_ARM_TFUNC) |
| 5847 | value |= 1; |
| 5848 | |
| 5849 | if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL |
| 5850 | || r_type == R_ARM_THM_MOVT_BREL) |
| 5851 | value >>= 16; |
| 5852 | |
| 5853 | insn &= 0xfbf08f00; |
| 5854 | insn |= (value & 0xf000) << 4; |
| 5855 | insn |= (value & 0x0800) << 15; |
| 5856 | insn |= (value & 0x0700) << 4; |
| 5857 | insn |= (value & 0x00ff); |
| 5858 | |
| 5859 | bfd_put_16 (input_bfd, insn >> 16, hit_data); |
| 5860 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); |
| 5861 | } |
| 5862 | return bfd_reloc_ok; |
| 5863 | |
| 5864 | case R_ARM_ALU_PC_G0_NC: |
| 5865 | case R_ARM_ALU_PC_G1_NC: |
| 5866 | case R_ARM_ALU_PC_G0: |
| 5867 | case R_ARM_ALU_PC_G1: |
| 5868 | case R_ARM_ALU_PC_G2: |
| 5869 | case R_ARM_ALU_SB_G0_NC: |
| 5870 | case R_ARM_ALU_SB_G1_NC: |
| 5871 | case R_ARM_ALU_SB_G0: |
| 5872 | case R_ARM_ALU_SB_G1: |
| 5873 | case R_ARM_ALU_SB_G2: |
| 5874 | { |
| 5875 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); |
| 5876 | bfd_vma pc = input_section->output_section->vma |
| 5877 | + input_section->output_offset + rel->r_offset; |
| 5878 | /* sb should be the origin of the *segment* containing the symbol. |
| 5879 | It is not clear how to obtain this OS-dependent value, so we |
| 5880 | make an arbitrary choice of zero. */ |
| 5881 | bfd_vma sb = 0; |
| 5882 | bfd_vma residual; |
| 5883 | bfd_vma g_n; |
| 5884 | bfd_signed_vma signed_value; |
| 5885 | int group = 0; |
| 5886 | |
| 5887 | /* Determine which group of bits to select. */ |
| 5888 | switch (r_type) |
| 5889 | { |
| 5890 | case R_ARM_ALU_PC_G0_NC: |
| 5891 | case R_ARM_ALU_PC_G0: |
| 5892 | case R_ARM_ALU_SB_G0_NC: |
| 5893 | case R_ARM_ALU_SB_G0: |
| 5894 | group = 0; |
| 5895 | break; |
| 5896 | |
| 5897 | case R_ARM_ALU_PC_G1_NC: |
| 5898 | case R_ARM_ALU_PC_G1: |
| 5899 | case R_ARM_ALU_SB_G1_NC: |
| 5900 | case R_ARM_ALU_SB_G1: |
| 5901 | group = 1; |
| 5902 | break; |
| 5903 | |
| 5904 | case R_ARM_ALU_PC_G2: |
| 5905 | case R_ARM_ALU_SB_G2: |
| 5906 | group = 2; |
| 5907 | break; |
| 5908 | |
| 5909 | default: |
| 5910 | abort(); |
| 5911 | } |
| 5912 | |
| 5913 | /* If REL, extract the addend from the insn. If RELA, it will |
| 5914 | have already been fetched for us. */ |
| 5915 | if (globals->use_rel) |
| 5916 | { |
| 5917 | int negative; |
| 5918 | bfd_vma constant = insn & 0xff; |
| 5919 | bfd_vma rotation = (insn & 0xf00) >> 8; |
| 5920 | |
| 5921 | if (rotation == 0) |
| 5922 | signed_addend = constant; |
| 5923 | else |
| 5924 | { |
| 5925 | /* Compensate for the fact that in the instruction, the |
| 5926 | rotation is stored in multiples of 2 bits. */ |
| 5927 | rotation *= 2; |
| 5928 | |
| 5929 | /* Rotate "constant" right by "rotation" bits. */ |
| 5930 | signed_addend = (constant >> rotation) | |
| 5931 | (constant << (8 * sizeof (bfd_vma) - rotation)); |
| 5932 | } |
| 5933 | |
| 5934 | /* Determine if the instruction is an ADD or a SUB. |
| 5935 | (For REL, this determines the sign of the addend.) */ |
| 5936 | negative = identify_add_or_sub (insn); |
| 5937 | if (negative == 0) |
| 5938 | { |
| 5939 | (*_bfd_error_handler) |
| 5940 | (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"), |
| 5941 | input_bfd, input_section, |
| 5942 | (long) rel->r_offset, howto->name); |
| 5943 | return bfd_reloc_overflow; |
| 5944 | } |
| 5945 | |
| 5946 | signed_addend *= negative; |
| 5947 | } |
| 5948 | |
| 5949 | /* Compute the value (X) to go in the place. */ |
| 5950 | if (r_type == R_ARM_ALU_PC_G0_NC |
| 5951 | || r_type == R_ARM_ALU_PC_G1_NC |
| 5952 | || r_type == R_ARM_ALU_PC_G0 |
| 5953 | || r_type == R_ARM_ALU_PC_G1 |
| 5954 | || r_type == R_ARM_ALU_PC_G2) |
| 5955 | /* PC relative. */ |
| 5956 | signed_value = value - pc + signed_addend; |
| 5957 | else |
| 5958 | /* Section base relative. */ |
| 5959 | signed_value = value - sb + signed_addend; |
| 5960 | |
| 5961 | /* If the target symbol is a Thumb function, then set the |
| 5962 | Thumb bit in the address. */ |
| 5963 | if (sym_flags == STT_ARM_TFUNC) |
| 5964 | signed_value |= 1; |
| 5965 | |
| 5966 | /* Calculate the value of the relevant G_n, in encoded |
| 5967 | constant-with-rotation format. */ |
| 5968 | g_n = calculate_group_reloc_mask (abs (signed_value), group, |
| 5969 | &residual); |
| 5970 | |
| 5971 | /* Check for overflow if required. */ |
| 5972 | if ((r_type == R_ARM_ALU_PC_G0 |
| 5973 | || r_type == R_ARM_ALU_PC_G1 |
| 5974 | || r_type == R_ARM_ALU_PC_G2 |
| 5975 | || r_type == R_ARM_ALU_SB_G0 |
| 5976 | || r_type == R_ARM_ALU_SB_G1 |
| 5977 | || r_type == R_ARM_ALU_SB_G2) && residual != 0) |
| 5978 | { |
| 5979 | (*_bfd_error_handler) |
| 5980 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), |
| 5981 | input_bfd, input_section, |
| 5982 | (long) rel->r_offset, abs (signed_value), howto->name); |
| 5983 | return bfd_reloc_overflow; |
| 5984 | } |
| 5985 | |
| 5986 | /* Mask out the value and the ADD/SUB part of the opcode; take care |
| 5987 | not to destroy the S bit. */ |
| 5988 | insn &= 0xff1ff000; |
| 5989 | |
| 5990 | /* Set the opcode according to whether the value to go in the |
| 5991 | place is negative. */ |
| 5992 | if (signed_value < 0) |
| 5993 | insn |= 1 << 22; |
| 5994 | else |
| 5995 | insn |= 1 << 23; |
| 5996 | |
| 5997 | /* Encode the offset. */ |
| 5998 | insn |= g_n; |
| 5999 | |
| 6000 | bfd_put_32 (input_bfd, insn, hit_data); |
| 6001 | } |
| 6002 | return bfd_reloc_ok; |
| 6003 | |
| 6004 | case R_ARM_LDR_PC_G0: |
| 6005 | case R_ARM_LDR_PC_G1: |
| 6006 | case R_ARM_LDR_PC_G2: |
| 6007 | case R_ARM_LDR_SB_G0: |
| 6008 | case R_ARM_LDR_SB_G1: |
| 6009 | case R_ARM_LDR_SB_G2: |
| 6010 | { |
| 6011 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); |
| 6012 | bfd_vma pc = input_section->output_section->vma |
| 6013 | + input_section->output_offset + rel->r_offset; |
| 6014 | bfd_vma sb = 0; /* See note above. */ |
| 6015 | bfd_vma residual; |
| 6016 | bfd_signed_vma signed_value; |
| 6017 | int group = 0; |
| 6018 | |
| 6019 | /* Determine which groups of bits to calculate. */ |
| 6020 | switch (r_type) |
| 6021 | { |
| 6022 | case R_ARM_LDR_PC_G0: |
| 6023 | case R_ARM_LDR_SB_G0: |
| 6024 | group = 0; |
| 6025 | break; |
| 6026 | |
| 6027 | case R_ARM_LDR_PC_G1: |
| 6028 | case R_ARM_LDR_SB_G1: |
| 6029 | group = 1; |
| 6030 | break; |
| 6031 | |
| 6032 | case R_ARM_LDR_PC_G2: |
| 6033 | case R_ARM_LDR_SB_G2: |
| 6034 | group = 2; |
| 6035 | break; |
| 6036 | |
| 6037 | default: |
| 6038 | abort(); |
| 6039 | } |
| 6040 | |
| 6041 | /* If REL, extract the addend from the insn. If RELA, it will |
| 6042 | have already been fetched for us. */ |
| 6043 | if (globals->use_rel) |
| 6044 | { |
| 6045 | int negative = (insn & (1 << 23)) ? 1 : -1; |
| 6046 | signed_addend = negative * (insn & 0xfff); |
| 6047 | } |
| 6048 | |
| 6049 | /* Compute the value (X) to go in the place. */ |
| 6050 | if (r_type == R_ARM_LDR_PC_G0 |
| 6051 | || r_type == R_ARM_LDR_PC_G1 |
| 6052 | || r_type == R_ARM_LDR_PC_G2) |
| 6053 | /* PC relative. */ |
| 6054 | signed_value = value - pc + signed_addend; |
| 6055 | else |
| 6056 | /* Section base relative. */ |
| 6057 | signed_value = value - sb + signed_addend; |
| 6058 | |
| 6059 | /* Calculate the value of the relevant G_{n-1} to obtain |
| 6060 | the residual at that stage. */ |
| 6061 | calculate_group_reloc_mask (abs (signed_value), group - 1, &residual); |
| 6062 | |
| 6063 | /* Check for overflow. */ |
| 6064 | if (residual >= 0x1000) |
| 6065 | { |
| 6066 | (*_bfd_error_handler) |
| 6067 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), |
| 6068 | input_bfd, input_section, |
| 6069 | (long) rel->r_offset, abs (signed_value), howto->name); |
| 6070 | return bfd_reloc_overflow; |
| 6071 | } |
| 6072 | |
| 6073 | /* Mask out the value and U bit. */ |
| 6074 | insn &= 0xff7ff000; |
| 6075 | |
| 6076 | /* Set the U bit if the value to go in the place is non-negative. */ |
| 6077 | if (signed_value >= 0) |
| 6078 | insn |= 1 << 23; |
| 6079 | |
| 6080 | /* Encode the offset. */ |
| 6081 | insn |= residual; |
| 6082 | |
| 6083 | bfd_put_32 (input_bfd, insn, hit_data); |
| 6084 | } |
| 6085 | return bfd_reloc_ok; |
| 6086 | |
| 6087 | case R_ARM_LDRS_PC_G0: |
| 6088 | case R_ARM_LDRS_PC_G1: |
| 6089 | case R_ARM_LDRS_PC_G2: |
| 6090 | case R_ARM_LDRS_SB_G0: |
| 6091 | case R_ARM_LDRS_SB_G1: |
| 6092 | case R_ARM_LDRS_SB_G2: |
| 6093 | { |
| 6094 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); |
| 6095 | bfd_vma pc = input_section->output_section->vma |
| 6096 | + input_section->output_offset + rel->r_offset; |
| 6097 | bfd_vma sb = 0; /* See note above. */ |
| 6098 | bfd_vma residual; |
| 6099 | bfd_signed_vma signed_value; |
| 6100 | int group = 0; |
| 6101 | |
| 6102 | /* Determine which groups of bits to calculate. */ |
| 6103 | switch (r_type) |
| 6104 | { |
| 6105 | case R_ARM_LDRS_PC_G0: |
| 6106 | case R_ARM_LDRS_SB_G0: |
| 6107 | group = 0; |
| 6108 | break; |
| 6109 | |
| 6110 | case R_ARM_LDRS_PC_G1: |
| 6111 | case R_ARM_LDRS_SB_G1: |
| 6112 | group = 1; |
| 6113 | break; |
| 6114 | |
| 6115 | case R_ARM_LDRS_PC_G2: |
| 6116 | case R_ARM_LDRS_SB_G2: |
| 6117 | group = 2; |
| 6118 | break; |
| 6119 | |
| 6120 | default: |
| 6121 | abort(); |
| 6122 | } |
| 6123 | |
| 6124 | /* If REL, extract the addend from the insn. If RELA, it will |
| 6125 | have already been fetched for us. */ |
| 6126 | if (globals->use_rel) |
| 6127 | { |
| 6128 | int negative = (insn & (1 << 23)) ? 1 : -1; |
| 6129 | signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf)); |
| 6130 | } |
| 6131 | |
| 6132 | /* Compute the value (X) to go in the place. */ |
| 6133 | if (r_type == R_ARM_LDRS_PC_G0 |
| 6134 | || r_type == R_ARM_LDRS_PC_G1 |
| 6135 | || r_type == R_ARM_LDRS_PC_G2) |
| 6136 | /* PC relative. */ |
| 6137 | signed_value = value - pc + signed_addend; |
| 6138 | else |
| 6139 | /* Section base relative. */ |
| 6140 | signed_value = value - sb + signed_addend; |
| 6141 | |
| 6142 | /* Calculate the value of the relevant G_{n-1} to obtain |
| 6143 | the residual at that stage. */ |
| 6144 | calculate_group_reloc_mask (abs (signed_value), group - 1, &residual); |
| 6145 | |
| 6146 | /* Check for overflow. */ |
| 6147 | if (residual >= 0x100) |
| 6148 | { |
| 6149 | (*_bfd_error_handler) |
| 6150 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), |
| 6151 | input_bfd, input_section, |
| 6152 | (long) rel->r_offset, abs (signed_value), howto->name); |
| 6153 | return bfd_reloc_overflow; |
| 6154 | } |
| 6155 | |
| 6156 | /* Mask out the value and U bit. */ |
| 6157 | insn &= 0xff7ff0f0; |
| 6158 | |
| 6159 | /* Set the U bit if the value to go in the place is non-negative. */ |
| 6160 | if (signed_value >= 0) |
| 6161 | insn |= 1 << 23; |
| 6162 | |
| 6163 | /* Encode the offset. */ |
| 6164 | insn |= ((residual & 0xf0) << 4) | (residual & 0xf); |
| 6165 | |
| 6166 | bfd_put_32 (input_bfd, insn, hit_data); |
| 6167 | } |
| 6168 | return bfd_reloc_ok; |
| 6169 | |
| 6170 | case R_ARM_LDC_PC_G0: |
| 6171 | case R_ARM_LDC_PC_G1: |
| 6172 | case R_ARM_LDC_PC_G2: |
| 6173 | case R_ARM_LDC_SB_G0: |
| 6174 | case R_ARM_LDC_SB_G1: |
| 6175 | case R_ARM_LDC_SB_G2: |
| 6176 | { |
| 6177 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); |
| 6178 | bfd_vma pc = input_section->output_section->vma |
| 6179 | + input_section->output_offset + rel->r_offset; |
| 6180 | bfd_vma sb = 0; /* See note above. */ |
| 6181 | bfd_vma residual; |
| 6182 | bfd_signed_vma signed_value; |
| 6183 | int group = 0; |
| 6184 | |
| 6185 | /* Determine which groups of bits to calculate. */ |
| 6186 | switch (r_type) |
| 6187 | { |
| 6188 | case R_ARM_LDC_PC_G0: |
| 6189 | case R_ARM_LDC_SB_G0: |
| 6190 | group = 0; |
| 6191 | break; |
| 6192 | |
| 6193 | case R_ARM_LDC_PC_G1: |
| 6194 | case R_ARM_LDC_SB_G1: |
| 6195 | group = 1; |
| 6196 | break; |
| 6197 | |
| 6198 | case R_ARM_LDC_PC_G2: |
| 6199 | case R_ARM_LDC_SB_G2: |
| 6200 | group = 2; |
| 6201 | break; |
| 6202 | |
| 6203 | default: |
| 6204 | abort(); |
| 6205 | } |
| 6206 | |
| 6207 | /* If REL, extract the addend from the insn. If RELA, it will |
| 6208 | have already been fetched for us. */ |
| 6209 | if (globals->use_rel) |
| 6210 | { |
| 6211 | int negative = (insn & (1 << 23)) ? 1 : -1; |
| 6212 | signed_addend = negative * ((insn & 0xff) << 2); |
| 6213 | } |
| 6214 | |
| 6215 | /* Compute the value (X) to go in the place. */ |
| 6216 | if (r_type == R_ARM_LDC_PC_G0 |
| 6217 | || r_type == R_ARM_LDC_PC_G1 |
| 6218 | || r_type == R_ARM_LDC_PC_G2) |
| 6219 | /* PC relative. */ |
| 6220 | signed_value = value - pc + signed_addend; |
| 6221 | else |
| 6222 | /* Section base relative. */ |
| 6223 | signed_value = value - sb + signed_addend; |
| 6224 | |
| 6225 | /* Calculate the value of the relevant G_{n-1} to obtain |
| 6226 | the residual at that stage. */ |
| 6227 | calculate_group_reloc_mask (abs (signed_value), group - 1, &residual); |
| 6228 | |
| 6229 | /* Check for overflow. (The absolute value to go in the place must be |
| 6230 | divisible by four and, after having been divided by four, must |
| 6231 | fit in eight bits.) */ |
| 6232 | if ((residual & 0x3) != 0 || residual >= 0x400) |
| 6233 | { |
| 6234 | (*_bfd_error_handler) |
| 6235 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), |
| 6236 | input_bfd, input_section, |
| 6237 | (long) rel->r_offset, abs (signed_value), howto->name); |
| 6238 | return bfd_reloc_overflow; |
| 6239 | } |
| 6240 | |
| 6241 | /* Mask out the value and U bit. */ |
| 6242 | insn &= 0xff7fff00; |
| 6243 | |
| 6244 | /* Set the U bit if the value to go in the place is non-negative. */ |
| 6245 | if (signed_value >= 0) |
| 6246 | insn |= 1 << 23; |
| 6247 | |
| 6248 | /* Encode the offset. */ |
| 6249 | insn |= residual >> 2; |
| 6250 | |
| 6251 | bfd_put_32 (input_bfd, insn, hit_data); |
| 6252 | } |
| 6253 | return bfd_reloc_ok; |
| 6254 | |
| 6255 | default: |
| 6256 | return bfd_reloc_notsupported; |
| 6257 | } |
| 6258 | } |
| 6259 | |
| 6260 | /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */ |
| 6261 | static void |
| 6262 | arm_add_to_rel (bfd * abfd, |
| 6263 | bfd_byte * address, |
| 6264 | reloc_howto_type * howto, |
| 6265 | bfd_signed_vma increment) |
| 6266 | { |
| 6267 | bfd_signed_vma addend; |
| 6268 | |
| 6269 | if (howto->type == R_ARM_THM_CALL) |
| 6270 | { |
| 6271 | int upper_insn, lower_insn; |
| 6272 | int upper, lower; |
| 6273 | |
| 6274 | upper_insn = bfd_get_16 (abfd, address); |
| 6275 | lower_insn = bfd_get_16 (abfd, address + 2); |
| 6276 | upper = upper_insn & 0x7ff; |
| 6277 | lower = lower_insn & 0x7ff; |
| 6278 | |
| 6279 | addend = (upper << 12) | (lower << 1); |
| 6280 | addend += increment; |
| 6281 | addend >>= 1; |
| 6282 | |
| 6283 | upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff); |
| 6284 | lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff); |
| 6285 | |
| 6286 | bfd_put_16 (abfd, (bfd_vma) upper_insn, address); |
| 6287 | bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2); |
| 6288 | } |
| 6289 | else |
| 6290 | { |
| 6291 | bfd_vma contents; |
| 6292 | |
| 6293 | contents = bfd_get_32 (abfd, address); |
| 6294 | |
| 6295 | /* Get the (signed) value from the instruction. */ |
| 6296 | addend = contents & howto->src_mask; |
| 6297 | if (addend & ((howto->src_mask + 1) >> 1)) |
| 6298 | { |
| 6299 | bfd_signed_vma mask; |
| 6300 | |
| 6301 | mask = -1; |
| 6302 | mask &= ~ howto->src_mask; |
| 6303 | addend |= mask; |
| 6304 | } |
| 6305 | |
| 6306 | /* Add in the increment, (which is a byte value). */ |
| 6307 | switch (howto->type) |
| 6308 | { |
| 6309 | default: |
| 6310 | addend += increment; |
| 6311 | break; |
| 6312 | |
| 6313 | case R_ARM_PC24: |
| 6314 | case R_ARM_PLT32: |
| 6315 | case R_ARM_CALL: |
| 6316 | case R_ARM_JUMP24: |
| 6317 | addend <<= howto->size; |
| 6318 | addend += increment; |
| 6319 | |
| 6320 | /* Should we check for overflow here ? */ |
| 6321 | |
| 6322 | /* Drop any undesired bits. */ |
| 6323 | addend >>= howto->rightshift; |
| 6324 | break; |
| 6325 | } |
| 6326 | |
| 6327 | contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask); |
| 6328 | |
| 6329 | bfd_put_32 (abfd, contents, address); |
| 6330 | } |
| 6331 | } |
| 6332 | |
| 6333 | #define IS_ARM_TLS_RELOC(R_TYPE) \ |
| 6334 | ((R_TYPE) == R_ARM_TLS_GD32 \ |
| 6335 | || (R_TYPE) == R_ARM_TLS_LDO32 \ |
| 6336 | || (R_TYPE) == R_ARM_TLS_LDM32 \ |
| 6337 | || (R_TYPE) == R_ARM_TLS_DTPOFF32 \ |
| 6338 | || (R_TYPE) == R_ARM_TLS_DTPMOD32 \ |
| 6339 | || (R_TYPE) == R_ARM_TLS_TPOFF32 \ |
| 6340 | || (R_TYPE) == R_ARM_TLS_LE32 \ |
| 6341 | || (R_TYPE) == R_ARM_TLS_IE32) |
| 6342 | |
| 6343 | /* Relocate an ARM ELF section. */ |
| 6344 | static bfd_boolean |
| 6345 | elf32_arm_relocate_section (bfd * output_bfd, |
| 6346 | struct bfd_link_info * info, |
| 6347 | bfd * input_bfd, |
| 6348 | asection * input_section, |
| 6349 | bfd_byte * contents, |
| 6350 | Elf_Internal_Rela * relocs, |
| 6351 | Elf_Internal_Sym * local_syms, |
| 6352 | asection ** local_sections) |
| 6353 | { |
| 6354 | Elf_Internal_Shdr *symtab_hdr; |
| 6355 | struct elf_link_hash_entry **sym_hashes; |
| 6356 | Elf_Internal_Rela *rel; |
| 6357 | Elf_Internal_Rela *relend; |
| 6358 | const char *name; |
| 6359 | struct elf32_arm_link_hash_table * globals; |
| 6360 | |
| 6361 | globals = elf32_arm_hash_table (info); |
| 6362 | |
| 6363 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
| 6364 | sym_hashes = elf_sym_hashes (input_bfd); |
| 6365 | |
| 6366 | rel = relocs; |
| 6367 | relend = relocs + input_section->reloc_count; |
| 6368 | for (; rel < relend; rel++) |
| 6369 | { |
| 6370 | int r_type; |
| 6371 | reloc_howto_type * howto; |
| 6372 | unsigned long r_symndx; |
| 6373 | Elf_Internal_Sym * sym; |
| 6374 | asection * sec; |
| 6375 | struct elf_link_hash_entry * h; |
| 6376 | bfd_vma relocation; |
| 6377 | bfd_reloc_status_type r; |
| 6378 | arelent bfd_reloc; |
| 6379 | char sym_type; |
| 6380 | bfd_boolean unresolved_reloc = FALSE; |
| 6381 | char *error_message = NULL; |
| 6382 | |
| 6383 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 6384 | r_type = ELF32_R_TYPE (rel->r_info); |
| 6385 | r_type = arm_real_reloc_type (globals, r_type); |
| 6386 | |
| 6387 | if ( r_type == R_ARM_GNU_VTENTRY |
| 6388 | || r_type == R_ARM_GNU_VTINHERIT) |
| 6389 | continue; |
| 6390 | |
| 6391 | bfd_reloc.howto = elf32_arm_howto_from_type (r_type); |
| 6392 | howto = bfd_reloc.howto; |
| 6393 | |
| 6394 | h = NULL; |
| 6395 | sym = NULL; |
| 6396 | sec = NULL; |
| 6397 | |
| 6398 | if (r_symndx < symtab_hdr->sh_info) |
| 6399 | { |
| 6400 | sym = local_syms + r_symndx; |
| 6401 | sym_type = ELF32_ST_TYPE (sym->st_info); |
| 6402 | sec = local_sections[r_symndx]; |
| 6403 | if (globals->use_rel) |
| 6404 | { |
| 6405 | relocation = (sec->output_section->vma |
| 6406 | + sec->output_offset |
| 6407 | + sym->st_value); |
| 6408 | if (!info->relocatable |
| 6409 | && (sec->flags & SEC_MERGE) |
| 6410 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) |
| 6411 | { |
| 6412 | asection *msec; |
| 6413 | bfd_vma addend, value; |
| 6414 | |
| 6415 | if (howto->rightshift) |
| 6416 | { |
| 6417 | (*_bfd_error_handler) |
| 6418 | (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"), |
| 6419 | input_bfd, input_section, |
| 6420 | (long) rel->r_offset, howto->name); |
| 6421 | return FALSE; |
| 6422 | } |
| 6423 | |
| 6424 | value = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 6425 | |
| 6426 | /* Get the (signed) value from the instruction. */ |
| 6427 | addend = value & howto->src_mask; |
| 6428 | if (addend & ((howto->src_mask + 1) >> 1)) |
| 6429 | { |
| 6430 | bfd_signed_vma mask; |
| 6431 | |
| 6432 | mask = -1; |
| 6433 | mask &= ~ howto->src_mask; |
| 6434 | addend |= mask; |
| 6435 | } |
| 6436 | msec = sec; |
| 6437 | addend = |
| 6438 | _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) |
| 6439 | - relocation; |
| 6440 | addend += msec->output_section->vma + msec->output_offset; |
| 6441 | value = (value & ~ howto->dst_mask) | (addend & howto->dst_mask); |
| 6442 | bfd_put_32 (input_bfd, value, contents + rel->r_offset); |
| 6443 | } |
| 6444 | } |
| 6445 | else |
| 6446 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 6447 | } |
| 6448 | else |
| 6449 | { |
| 6450 | bfd_boolean warned; |
| 6451 | |
| 6452 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 6453 | r_symndx, symtab_hdr, sym_hashes, |
| 6454 | h, sec, relocation, |
| 6455 | unresolved_reloc, warned); |
| 6456 | |
| 6457 | sym_type = h->type; |
| 6458 | } |
| 6459 | |
| 6460 | if (sec != NULL && elf_discarded_section (sec)) |
| 6461 | { |
| 6462 | /* For relocs against symbols from removed linkonce sections, |
| 6463 | or sections discarded by a linker script, we just want the |
| 6464 | section contents zeroed. Avoid any special processing. */ |
| 6465 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); |
| 6466 | rel->r_info = 0; |
| 6467 | rel->r_addend = 0; |
| 6468 | continue; |
| 6469 | } |
| 6470 | |
| 6471 | if (info->relocatable) |
| 6472 | { |
| 6473 | /* This is a relocatable link. We don't have to change |
| 6474 | anything, unless the reloc is against a section symbol, |
| 6475 | in which case we have to adjust according to where the |
| 6476 | section symbol winds up in the output section. */ |
| 6477 | if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) |
| 6478 | { |
| 6479 | if (globals->use_rel) |
| 6480 | arm_add_to_rel (input_bfd, contents + rel->r_offset, |
| 6481 | howto, (bfd_signed_vma) sec->output_offset); |
| 6482 | else |
| 6483 | rel->r_addend += sec->output_offset; |
| 6484 | } |
| 6485 | continue; |
| 6486 | } |
| 6487 | |
| 6488 | if (h != NULL) |
| 6489 | name = h->root.root.string; |
| 6490 | else |
| 6491 | { |
| 6492 | name = (bfd_elf_string_from_elf_section |
| 6493 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); |
| 6494 | if (name == NULL || *name == '\0') |
| 6495 | name = bfd_section_name (input_bfd, sec); |
| 6496 | } |
| 6497 | |
| 6498 | if (r_symndx != 0 |
| 6499 | && r_type != R_ARM_NONE |
| 6500 | && (h == NULL |
| 6501 | || h->root.type == bfd_link_hash_defined |
| 6502 | || h->root.type == bfd_link_hash_defweak) |
| 6503 | && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
| 6504 | { |
| 6505 | (*_bfd_error_handler) |
| 6506 | ((sym_type == STT_TLS |
| 6507 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
| 6508 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")), |
| 6509 | input_bfd, |
| 6510 | input_section, |
| 6511 | (long) rel->r_offset, |
| 6512 | howto->name, |
| 6513 | name); |
| 6514 | } |
| 6515 | |
| 6516 | r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd, |
| 6517 | input_section, contents, rel, |
| 6518 | relocation, info, sec, name, |
| 6519 | (h ? ELF_ST_TYPE (h->type) : |
| 6520 | ELF_ST_TYPE (sym->st_info)), h, |
| 6521 | &unresolved_reloc, &error_message); |
| 6522 | |
| 6523 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
| 6524 | because such sections are not SEC_ALLOC and thus ld.so will |
| 6525 | not process them. */ |
| 6526 | if (unresolved_reloc |
| 6527 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
| 6528 | && h->def_dynamic)) |
| 6529 | { |
| 6530 | (*_bfd_error_handler) |
| 6531 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
| 6532 | input_bfd, |
| 6533 | input_section, |
| 6534 | (long) rel->r_offset, |
| 6535 | howto->name, |
| 6536 | h->root.root.string); |
| 6537 | return FALSE; |
| 6538 | } |
| 6539 | |
| 6540 | if (r != bfd_reloc_ok) |
| 6541 | { |
| 6542 | switch (r) |
| 6543 | { |
| 6544 | case bfd_reloc_overflow: |
| 6545 | /* If the overflowing reloc was to an undefined symbol, |
| 6546 | we have already printed one error message and there |
| 6547 | is no point complaining again. */ |
| 6548 | if ((! h || |
| 6549 | h->root.type != bfd_link_hash_undefined) |
| 6550 | && (!((*info->callbacks->reloc_overflow) |
| 6551 | (info, (h ? &h->root : NULL), name, howto->name, |
| 6552 | (bfd_vma) 0, input_bfd, input_section, |
| 6553 | rel->r_offset)))) |
| 6554 | return FALSE; |
| 6555 | break; |
| 6556 | |
| 6557 | case bfd_reloc_undefined: |
| 6558 | if (!((*info->callbacks->undefined_symbol) |
| 6559 | (info, name, input_bfd, input_section, |
| 6560 | rel->r_offset, TRUE))) |
| 6561 | return FALSE; |
| 6562 | break; |
| 6563 | |
| 6564 | case bfd_reloc_outofrange: |
| 6565 | error_message = _("out of range"); |
| 6566 | goto common_error; |
| 6567 | |
| 6568 | case bfd_reloc_notsupported: |
| 6569 | error_message = _("unsupported relocation"); |
| 6570 | goto common_error; |
| 6571 | |
| 6572 | case bfd_reloc_dangerous: |
| 6573 | /* error_message should already be set. */ |
| 6574 | goto common_error; |
| 6575 | |
| 6576 | default: |
| 6577 | error_message = _("unknown error"); |
| 6578 | /* fall through */ |
| 6579 | |
| 6580 | common_error: |
| 6581 | BFD_ASSERT (error_message != NULL); |
| 6582 | if (!((*info->callbacks->reloc_dangerous) |
| 6583 | (info, error_message, input_bfd, input_section, |
| 6584 | rel->r_offset))) |
| 6585 | return FALSE; |
| 6586 | break; |
| 6587 | } |
| 6588 | } |
| 6589 | } |
| 6590 | |
| 6591 | return TRUE; |
| 6592 | } |
| 6593 | |
| 6594 | /* Set the right machine number. */ |
| 6595 | |
| 6596 | static bfd_boolean |
| 6597 | elf32_arm_object_p (bfd *abfd) |
| 6598 | { |
| 6599 | unsigned int mach; |
| 6600 | |
| 6601 | mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION); |
| 6602 | |
| 6603 | if (mach != bfd_mach_arm_unknown) |
| 6604 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); |
| 6605 | |
| 6606 | else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT) |
| 6607 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312); |
| 6608 | |
| 6609 | else |
| 6610 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); |
| 6611 | |
| 6612 | return TRUE; |
| 6613 | } |
| 6614 | |
| 6615 | /* Function to keep ARM specific flags in the ELF header. */ |
| 6616 | |
| 6617 | static bfd_boolean |
| 6618 | elf32_arm_set_private_flags (bfd *abfd, flagword flags) |
| 6619 | { |
| 6620 | if (elf_flags_init (abfd) |
| 6621 | && elf_elfheader (abfd)->e_flags != flags) |
| 6622 | { |
| 6623 | if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN) |
| 6624 | { |
| 6625 | if (flags & EF_ARM_INTERWORK) |
| 6626 | (*_bfd_error_handler) |
| 6627 | (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"), |
| 6628 | abfd); |
| 6629 | else |
| 6630 | _bfd_error_handler |
| 6631 | (_("Warning: Clearing the interworking flag of %B due to outside request"), |
| 6632 | abfd); |
| 6633 | } |
| 6634 | } |
| 6635 | else |
| 6636 | { |
| 6637 | elf_elfheader (abfd)->e_flags = flags; |
| 6638 | elf_flags_init (abfd) = TRUE; |
| 6639 | } |
| 6640 | |
| 6641 | return TRUE; |
| 6642 | } |
| 6643 | |
| 6644 | /* Copy backend specific data from one object module to another. */ |
| 6645 | |
| 6646 | static bfd_boolean |
| 6647 | elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
| 6648 | { |
| 6649 | flagword in_flags; |
| 6650 | flagword out_flags; |
| 6651 | |
| 6652 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 6653 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 6654 | return TRUE; |
| 6655 | |
| 6656 | in_flags = elf_elfheader (ibfd)->e_flags; |
| 6657 | out_flags = elf_elfheader (obfd)->e_flags; |
| 6658 | |
| 6659 | if (elf_flags_init (obfd) |
| 6660 | && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN |
| 6661 | && in_flags != out_flags) |
| 6662 | { |
| 6663 | /* Cannot mix APCS26 and APCS32 code. */ |
| 6664 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
| 6665 | return FALSE; |
| 6666 | |
| 6667 | /* Cannot mix float APCS and non-float APCS code. */ |
| 6668 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
| 6669 | return FALSE; |
| 6670 | |
| 6671 | /* If the src and dest have different interworking flags |
| 6672 | then turn off the interworking bit. */ |
| 6673 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
| 6674 | { |
| 6675 | if (out_flags & EF_ARM_INTERWORK) |
| 6676 | _bfd_error_handler |
| 6677 | (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"), |
| 6678 | obfd, ibfd); |
| 6679 | |
| 6680 | in_flags &= ~EF_ARM_INTERWORK; |
| 6681 | } |
| 6682 | |
| 6683 | /* Likewise for PIC, though don't warn for this case. */ |
| 6684 | if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC)) |
| 6685 | in_flags &= ~EF_ARM_PIC; |
| 6686 | } |
| 6687 | |
| 6688 | elf_elfheader (obfd)->e_flags = in_flags; |
| 6689 | elf_flags_init (obfd) = TRUE; |
| 6690 | |
| 6691 | /* Also copy the EI_OSABI field. */ |
| 6692 | elf_elfheader (obfd)->e_ident[EI_OSABI] = |
| 6693 | elf_elfheader (ibfd)->e_ident[EI_OSABI]; |
| 6694 | |
| 6695 | /* Copy object attributes. */ |
| 6696 | _bfd_elf_copy_obj_attributes (ibfd, obfd); |
| 6697 | |
| 6698 | return TRUE; |
| 6699 | } |
| 6700 | |
| 6701 | /* Values for Tag_ABI_PCS_R9_use. */ |
| 6702 | enum |
| 6703 | { |
| 6704 | AEABI_R9_V6, |
| 6705 | AEABI_R9_SB, |
| 6706 | AEABI_R9_TLS, |
| 6707 | AEABI_R9_unused |
| 6708 | }; |
| 6709 | |
| 6710 | /* Values for Tag_ABI_PCS_RW_data. */ |
| 6711 | enum |
| 6712 | { |
| 6713 | AEABI_PCS_RW_data_absolute, |
| 6714 | AEABI_PCS_RW_data_PCrel, |
| 6715 | AEABI_PCS_RW_data_SBrel, |
| 6716 | AEABI_PCS_RW_data_unused |
| 6717 | }; |
| 6718 | |
| 6719 | /* Values for Tag_ABI_enum_size. */ |
| 6720 | enum |
| 6721 | { |
| 6722 | AEABI_enum_unused, |
| 6723 | AEABI_enum_short, |
| 6724 | AEABI_enum_wide, |
| 6725 | AEABI_enum_forced_wide |
| 6726 | }; |
| 6727 | |
| 6728 | /* Determine whether an object attribute tag takes an integer, a |
| 6729 | string or both. */ |
| 6730 | static int |
| 6731 | elf32_arm_obj_attrs_arg_type (int tag) |
| 6732 | { |
| 6733 | if (tag == Tag_compatibility) |
| 6734 | return 3; |
| 6735 | else if (tag == 4 || tag == 5) |
| 6736 | return 2; |
| 6737 | else if (tag < 32) |
| 6738 | return 1; |
| 6739 | else |
| 6740 | return (tag & 1) != 0 ? 2 : 1; |
| 6741 | } |
| 6742 | |
| 6743 | /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there |
| 6744 | are conflicting attributes. */ |
| 6745 | static bfd_boolean |
| 6746 | elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd) |
| 6747 | { |
| 6748 | obj_attribute *in_attr; |
| 6749 | obj_attribute *out_attr; |
| 6750 | obj_attribute_list *in_list; |
| 6751 | /* Some tags have 0 = don't care, 1 = strong requirement, |
| 6752 | 2 = weak requirement. */ |
| 6753 | static const int order_312[3] = {3, 1, 2}; |
| 6754 | int i; |
| 6755 | |
| 6756 | if (!elf_known_obj_attributes_proc (obfd)[0].i) |
| 6757 | { |
| 6758 | /* This is the first object. Copy the attributes. */ |
| 6759 | _bfd_elf_copy_obj_attributes (ibfd, obfd); |
| 6760 | |
| 6761 | /* Use the Tag_null value to indicate the attributes have been |
| 6762 | initialized. */ |
| 6763 | elf_known_obj_attributes_proc (obfd)[0].i = 1; |
| 6764 | |
| 6765 | return TRUE; |
| 6766 | } |
| 6767 | |
| 6768 | in_attr = elf_known_obj_attributes_proc (ibfd); |
| 6769 | out_attr = elf_known_obj_attributes_proc (obfd); |
| 6770 | /* This needs to happen before Tag_ABI_FP_number_model is merged. */ |
| 6771 | if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i) |
| 6772 | { |
| 6773 | /* Ignore mismatches if teh object doesn't use floating point. */ |
| 6774 | if (out_attr[Tag_ABI_FP_number_model].i == 0) |
| 6775 | out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i; |
| 6776 | else if (in_attr[Tag_ABI_FP_number_model].i != 0) |
| 6777 | { |
| 6778 | _bfd_error_handler |
| 6779 | (_("ERROR: %B uses VFP register arguments, %B does not"), |
| 6780 | ibfd, obfd); |
| 6781 | return FALSE; |
| 6782 | } |
| 6783 | } |
| 6784 | |
| 6785 | for (i = 4; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++) |
| 6786 | { |
| 6787 | /* Merge this attribute with existing attributes. */ |
| 6788 | switch (i) |
| 6789 | { |
| 6790 | case Tag_CPU_raw_name: |
| 6791 | case Tag_CPU_name: |
| 6792 | /* Use whichever has the greatest architecture requirements. We |
| 6793 | won't necessarily have both the above tags, so make sure input |
| 6794 | name is non-NULL. */ |
| 6795 | if (in_attr[Tag_CPU_arch].i > out_attr[Tag_CPU_arch].i |
| 6796 | && in_attr[i].s) |
| 6797 | out_attr[i].s = _bfd_elf_attr_strdup (obfd, in_attr[i].s); |
| 6798 | break; |
| 6799 | |
| 6800 | case Tag_ABI_optimization_goals: |
| 6801 | case Tag_ABI_FP_optimization_goals: |
| 6802 | /* Use the first value seen. */ |
| 6803 | break; |
| 6804 | |
| 6805 | case Tag_CPU_arch: |
| 6806 | case Tag_ARM_ISA_use: |
| 6807 | case Tag_THUMB_ISA_use: |
| 6808 | case Tag_VFP_arch: |
| 6809 | case Tag_WMMX_arch: |
| 6810 | case Tag_NEON_arch: |
| 6811 | /* ??? Do NEON and WMMX conflict? */ |
| 6812 | case Tag_ABI_FP_rounding: |
| 6813 | case Tag_ABI_FP_denormal: |
| 6814 | case Tag_ABI_FP_exceptions: |
| 6815 | case Tag_ABI_FP_user_exceptions: |
| 6816 | case Tag_ABI_FP_number_model: |
| 6817 | case Tag_ABI_align8_preserved: |
| 6818 | case Tag_ABI_HardFP_use: |
| 6819 | /* Use the largest value specified. */ |
| 6820 | if (in_attr[i].i > out_attr[i].i) |
| 6821 | out_attr[i].i = in_attr[i].i; |
| 6822 | break; |
| 6823 | |
| 6824 | case Tag_CPU_arch_profile: |
| 6825 | /* Warn if conflicting architecture profiles used. */ |
| 6826 | if (out_attr[i].i && in_attr[i].i && in_attr[i].i != out_attr[i].i) |
| 6827 | { |
| 6828 | _bfd_error_handler |
| 6829 | (_("ERROR: %B: Conflicting architecture profiles %c/%c"), |
| 6830 | ibfd, in_attr[i].i, out_attr[i].i); |
| 6831 | return FALSE; |
| 6832 | } |
| 6833 | if (in_attr[i].i) |
| 6834 | out_attr[i].i = in_attr[i].i; |
| 6835 | break; |
| 6836 | case Tag_PCS_config: |
| 6837 | if (out_attr[i].i == 0) |
| 6838 | out_attr[i].i = in_attr[i].i; |
| 6839 | else if (in_attr[i].i != 0 && out_attr[i].i != 0) |
| 6840 | { |
| 6841 | /* It's sometimes ok to mix different configs, so this is only |
| 6842 | a warning. */ |
| 6843 | _bfd_error_handler |
| 6844 | (_("Warning: %B: Conflicting platform configuration"), ibfd); |
| 6845 | } |
| 6846 | break; |
| 6847 | case Tag_ABI_PCS_R9_use: |
| 6848 | if (in_attr[i].i != out_attr[i].i |
| 6849 | && out_attr[i].i != AEABI_R9_unused |
| 6850 | && in_attr[i].i != AEABI_R9_unused) |
| 6851 | { |
| 6852 | _bfd_error_handler |
| 6853 | (_("ERROR: %B: Conflicting use of R9"), ibfd); |
| 6854 | return FALSE; |
| 6855 | } |
| 6856 | if (out_attr[i].i == AEABI_R9_unused) |
| 6857 | out_attr[i].i = in_attr[i].i; |
| 6858 | break; |
| 6859 | case Tag_ABI_PCS_RW_data: |
| 6860 | if (in_attr[i].i == AEABI_PCS_RW_data_SBrel |
| 6861 | && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB |
| 6862 | && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused) |
| 6863 | { |
| 6864 | _bfd_error_handler |
| 6865 | (_("ERROR: %B: SB relative addressing conflicts with use of R9"), |
| 6866 | ibfd); |
| 6867 | return FALSE; |
| 6868 | } |
| 6869 | /* Use the smallest value specified. */ |
| 6870 | if (in_attr[i].i < out_attr[i].i) |
| 6871 | out_attr[i].i = in_attr[i].i; |
| 6872 | break; |
| 6873 | case Tag_ABI_PCS_RO_data: |
| 6874 | /* Use the smallest value specified. */ |
| 6875 | if (in_attr[i].i < out_attr[i].i) |
| 6876 | out_attr[i].i = in_attr[i].i; |
| 6877 | break; |
| 6878 | case Tag_ABI_PCS_GOT_use: |
| 6879 | if (in_attr[i].i > 2 || out_attr[i].i > 2 |
| 6880 | || order_312[in_attr[i].i] < order_312[out_attr[i].i]) |
| 6881 | out_attr[i].i = in_attr[i].i; |
| 6882 | break; |
| 6883 | case Tag_ABI_PCS_wchar_t: |
| 6884 | if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i) |
| 6885 | { |
| 6886 | _bfd_error_handler |
| 6887 | (_("ERROR: %B: Conflicting definitions of wchar_t"), ibfd); |
| 6888 | return FALSE; |
| 6889 | } |
| 6890 | if (in_attr[i].i) |
| 6891 | out_attr[i].i = in_attr[i].i; |
| 6892 | break; |
| 6893 | case Tag_ABI_align8_needed: |
| 6894 | /* ??? Check against Tag_ABI_align8_preserved. */ |
| 6895 | if (in_attr[i].i > 2 || out_attr[i].i > 2 |
| 6896 | || order_312[in_attr[i].i] < order_312[out_attr[i].i]) |
| 6897 | out_attr[i].i = in_attr[i].i; |
| 6898 | break; |
| 6899 | case Tag_ABI_enum_size: |
| 6900 | if (in_attr[i].i != AEABI_enum_unused) |
| 6901 | { |
| 6902 | if (out_attr[i].i == AEABI_enum_unused |
| 6903 | || out_attr[i].i == AEABI_enum_forced_wide) |
| 6904 | { |
| 6905 | /* The existing object is compatible with anything. |
| 6906 | Use whatever requirements the new object has. */ |
| 6907 | out_attr[i].i = in_attr[i].i; |
| 6908 | } |
| 6909 | else if (in_attr[i].i != AEABI_enum_forced_wide |
| 6910 | && out_attr[i].i != in_attr[i].i |
| 6911 | && !elf32_arm_tdata (obfd)->no_enum_size_warning) |
| 6912 | { |
| 6913 | const char *aeabi_enum_names[] = |
| 6914 | { "", "variable-size", "32-bit", "" }; |
| 6915 | _bfd_error_handler |
| 6916 | (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"), |
| 6917 | ibfd, aeabi_enum_names[in_attr[i].i], |
| 6918 | aeabi_enum_names[out_attr[i].i]); |
| 6919 | } |
| 6920 | } |
| 6921 | break; |
| 6922 | case Tag_ABI_VFP_args: |
| 6923 | /* Aready done. */ |
| 6924 | break; |
| 6925 | case Tag_ABI_WMMX_args: |
| 6926 | if (in_attr[i].i != out_attr[i].i) |
| 6927 | { |
| 6928 | _bfd_error_handler |
| 6929 | (_("ERROR: %B uses iWMMXt register arguments, %B does not"), |
| 6930 | ibfd, obfd); |
| 6931 | return FALSE; |
| 6932 | } |
| 6933 | break; |
| 6934 | default: /* All known attributes should be explicitly covered. */ |
| 6935 | abort (); |
| 6936 | } |
| 6937 | |
| 6938 | if (in_attr[i].type && !out_attr[i].type) |
| 6939 | switch (in_attr[i].type) |
| 6940 | { |
| 6941 | case 1: |
| 6942 | if (out_attr[i].i) |
| 6943 | out_attr[i].type = 1; |
| 6944 | break; |
| 6945 | |
| 6946 | case 2: |
| 6947 | if (out_attr[i].s) |
| 6948 | out_attr[i].type = 2; |
| 6949 | break; |
| 6950 | |
| 6951 | default: |
| 6952 | abort (); |
| 6953 | } |
| 6954 | } |
| 6955 | |
| 6956 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
| 6957 | _bfd_elf_merge_object_attributes (ibfd, obfd); |
| 6958 | |
| 6959 | /* Check for any attributes not known on ARM. */ |
| 6960 | in_list = elf_other_obj_attributes_proc (ibfd); |
| 6961 | while (in_list && in_list->tag == Tag_compatibility) |
| 6962 | in_list = in_list->next; |
| 6963 | |
| 6964 | for (; in_list; in_list = in_list->next) |
| 6965 | { |
| 6966 | if ((in_list->tag & 128) < 64) |
| 6967 | { |
| 6968 | _bfd_error_handler |
| 6969 | (_("Warning: %B: Unknown EABI object attribute %d"), |
| 6970 | ibfd, in_list->tag); |
| 6971 | break; |
| 6972 | } |
| 6973 | } |
| 6974 | return TRUE; |
| 6975 | } |
| 6976 | |
| 6977 | |
| 6978 | /* Return TRUE if the two EABI versions are incompatible. */ |
| 6979 | |
| 6980 | static bfd_boolean |
| 6981 | elf32_arm_versions_compatible (unsigned iver, unsigned over) |
| 6982 | { |
| 6983 | /* v4 and v5 are the same spec before and after it was released, |
| 6984 | so allow mixing them. */ |
| 6985 | if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5) |
| 6986 | || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4)) |
| 6987 | return TRUE; |
| 6988 | |
| 6989 | return (iver == over); |
| 6990 | } |
| 6991 | |
| 6992 | /* Merge backend specific data from an object file to the output |
| 6993 | object file when linking. */ |
| 6994 | |
| 6995 | static bfd_boolean |
| 6996 | elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd) |
| 6997 | { |
| 6998 | flagword out_flags; |
| 6999 | flagword in_flags; |
| 7000 | bfd_boolean flags_compatible = TRUE; |
| 7001 | asection *sec; |
| 7002 | |
| 7003 | /* Check if we have the same endianess. */ |
| 7004 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
| 7005 | return FALSE; |
| 7006 | |
| 7007 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 7008 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 7009 | return TRUE; |
| 7010 | |
| 7011 | if (!elf32_arm_merge_eabi_attributes (ibfd, obfd)) |
| 7012 | return FALSE; |
| 7013 | |
| 7014 | /* The input BFD must have had its flags initialised. */ |
| 7015 | /* The following seems bogus to me -- The flags are initialized in |
| 7016 | the assembler but I don't think an elf_flags_init field is |
| 7017 | written into the object. */ |
| 7018 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ |
| 7019 | |
| 7020 | in_flags = elf_elfheader (ibfd)->e_flags; |
| 7021 | out_flags = elf_elfheader (obfd)->e_flags; |
| 7022 | |
| 7023 | if (!elf_flags_init (obfd)) |
| 7024 | { |
| 7025 | /* If the input is the default architecture and had the default |
| 7026 | flags then do not bother setting the flags for the output |
| 7027 | architecture, instead allow future merges to do this. If no |
| 7028 | future merges ever set these flags then they will retain their |
| 7029 | uninitialised values, which surprise surprise, correspond |
| 7030 | to the default values. */ |
| 7031 | if (bfd_get_arch_info (ibfd)->the_default |
| 7032 | && elf_elfheader (ibfd)->e_flags == 0) |
| 7033 | return TRUE; |
| 7034 | |
| 7035 | elf_flags_init (obfd) = TRUE; |
| 7036 | elf_elfheader (obfd)->e_flags = in_flags; |
| 7037 | |
| 7038 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) |
| 7039 | && bfd_get_arch_info (obfd)->the_default) |
| 7040 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); |
| 7041 | |
| 7042 | return TRUE; |
| 7043 | } |
| 7044 | |
| 7045 | /* Determine what should happen if the input ARM architecture |
| 7046 | does not match the output ARM architecture. */ |
| 7047 | if (! bfd_arm_merge_machines (ibfd, obfd)) |
| 7048 | return FALSE; |
| 7049 | |
| 7050 | /* Identical flags must be compatible. */ |
| 7051 | if (in_flags == out_flags) |
| 7052 | return TRUE; |
| 7053 | |
| 7054 | /* Check to see if the input BFD actually contains any sections. If |
| 7055 | not, its flags may not have been initialised either, but it |
| 7056 | cannot actually cause any incompatiblity. Do not short-circuit |
| 7057 | dynamic objects; their section list may be emptied by |
| 7058 | elf_link_add_object_symbols. |
| 7059 | |
| 7060 | Also check to see if there are no code sections in the input. |
| 7061 | In this case there is no need to check for code specific flags. |
| 7062 | XXX - do we need to worry about floating-point format compatability |
| 7063 | in data sections ? */ |
| 7064 | if (!(ibfd->flags & DYNAMIC)) |
| 7065 | { |
| 7066 | bfd_boolean null_input_bfd = TRUE; |
| 7067 | bfd_boolean only_data_sections = TRUE; |
| 7068 | |
| 7069 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
| 7070 | { |
| 7071 | /* Ignore synthetic glue sections. */ |
| 7072 | if (strcmp (sec->name, ".glue_7") |
| 7073 | && strcmp (sec->name, ".glue_7t")) |
| 7074 | { |
| 7075 | if ((bfd_get_section_flags (ibfd, sec) |
| 7076 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) |
| 7077 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) |
| 7078 | only_data_sections = FALSE; |
| 7079 | |
| 7080 | null_input_bfd = FALSE; |
| 7081 | break; |
| 7082 | } |
| 7083 | } |
| 7084 | |
| 7085 | if (null_input_bfd || only_data_sections) |
| 7086 | return TRUE; |
| 7087 | } |
| 7088 | |
| 7089 | /* Complain about various flag mismatches. */ |
| 7090 | if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags), |
| 7091 | EF_ARM_EABI_VERSION (out_flags))) |
| 7092 | { |
| 7093 | _bfd_error_handler |
| 7094 | (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"), |
| 7095 | ibfd, obfd, |
| 7096 | (in_flags & EF_ARM_EABIMASK) >> 24, |
| 7097 | (out_flags & EF_ARM_EABIMASK) >> 24); |
| 7098 | return FALSE; |
| 7099 | } |
| 7100 | |
| 7101 | /* Not sure what needs to be checked for EABI versions >= 1. */ |
| 7102 | /* VxWorks libraries do not use these flags. */ |
| 7103 | if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed |
| 7104 | && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed |
| 7105 | && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN) |
| 7106 | { |
| 7107 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
| 7108 | { |
| 7109 | _bfd_error_handler |
| 7110 | (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"), |
| 7111 | ibfd, obfd, |
| 7112 | in_flags & EF_ARM_APCS_26 ? 26 : 32, |
| 7113 | out_flags & EF_ARM_APCS_26 ? 26 : 32); |
| 7114 | flags_compatible = FALSE; |
| 7115 | } |
| 7116 | |
| 7117 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
| 7118 | { |
| 7119 | if (in_flags & EF_ARM_APCS_FLOAT) |
| 7120 | _bfd_error_handler |
| 7121 | (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"), |
| 7122 | ibfd, obfd); |
| 7123 | else |
| 7124 | _bfd_error_handler |
| 7125 | (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"), |
| 7126 | ibfd, obfd); |
| 7127 | |
| 7128 | flags_compatible = FALSE; |
| 7129 | } |
| 7130 | |
| 7131 | if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT)) |
| 7132 | { |
| 7133 | if (in_flags & EF_ARM_VFP_FLOAT) |
| 7134 | _bfd_error_handler |
| 7135 | (_("ERROR: %B uses VFP instructions, whereas %B does not"), |
| 7136 | ibfd, obfd); |
| 7137 | else |
| 7138 | _bfd_error_handler |
| 7139 | (_("ERROR: %B uses FPA instructions, whereas %B does not"), |
| 7140 | ibfd, obfd); |
| 7141 | |
| 7142 | flags_compatible = FALSE; |
| 7143 | } |
| 7144 | |
| 7145 | if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT)) |
| 7146 | { |
| 7147 | if (in_flags & EF_ARM_MAVERICK_FLOAT) |
| 7148 | _bfd_error_handler |
| 7149 | (_("ERROR: %B uses Maverick instructions, whereas %B does not"), |
| 7150 | ibfd, obfd); |
| 7151 | else |
| 7152 | _bfd_error_handler |
| 7153 | (_("ERROR: %B does not use Maverick instructions, whereas %B does"), |
| 7154 | ibfd, obfd); |
| 7155 | |
| 7156 | flags_compatible = FALSE; |
| 7157 | } |
| 7158 | |
| 7159 | #ifdef EF_ARM_SOFT_FLOAT |
| 7160 | if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT)) |
| 7161 | { |
| 7162 | /* We can allow interworking between code that is VFP format |
| 7163 | layout, and uses either soft float or integer regs for |
| 7164 | passing floating point arguments and results. We already |
| 7165 | know that the APCS_FLOAT flags match; similarly for VFP |
| 7166 | flags. */ |
| 7167 | if ((in_flags & EF_ARM_APCS_FLOAT) != 0 |
| 7168 | || (in_flags & EF_ARM_VFP_FLOAT) == 0) |
| 7169 | { |
| 7170 | if (in_flags & EF_ARM_SOFT_FLOAT) |
| 7171 | _bfd_error_handler |
| 7172 | (_("ERROR: %B uses software FP, whereas %B uses hardware FP"), |
| 7173 | ibfd, obfd); |
| 7174 | else |
| 7175 | _bfd_error_handler |
| 7176 | (_("ERROR: %B uses hardware FP, whereas %B uses software FP"), |
| 7177 | ibfd, obfd); |
| 7178 | |
| 7179 | flags_compatible = FALSE; |
| 7180 | } |
| 7181 | } |
| 7182 | #endif |
| 7183 | |
| 7184 | /* Interworking mismatch is only a warning. */ |
| 7185 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
| 7186 | { |
| 7187 | if (in_flags & EF_ARM_INTERWORK) |
| 7188 | { |
| 7189 | _bfd_error_handler |
| 7190 | (_("Warning: %B supports interworking, whereas %B does not"), |
| 7191 | ibfd, obfd); |
| 7192 | } |
| 7193 | else |
| 7194 | { |
| 7195 | _bfd_error_handler |
| 7196 | (_("Warning: %B does not support interworking, whereas %B does"), |
| 7197 | ibfd, obfd); |
| 7198 | } |
| 7199 | } |
| 7200 | } |
| 7201 | |
| 7202 | return flags_compatible; |
| 7203 | } |
| 7204 | |
| 7205 | /* Display the flags field. */ |
| 7206 | |
| 7207 | static bfd_boolean |
| 7208 | elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr) |
| 7209 | { |
| 7210 | FILE * file = (FILE *) ptr; |
| 7211 | unsigned long flags; |
| 7212 | |
| 7213 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
| 7214 | |
| 7215 | /* Print normal ELF private data. */ |
| 7216 | _bfd_elf_print_private_bfd_data (abfd, ptr); |
| 7217 | |
| 7218 | flags = elf_elfheader (abfd)->e_flags; |
| 7219 | /* Ignore init flag - it may not be set, despite the flags field |
| 7220 | containing valid data. */ |
| 7221 | |
| 7222 | /* xgettext:c-format */ |
| 7223 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); |
| 7224 | |
| 7225 | switch (EF_ARM_EABI_VERSION (flags)) |
| 7226 | { |
| 7227 | case EF_ARM_EABI_UNKNOWN: |
| 7228 | /* The following flag bits are GNU extensions and not part of the |
| 7229 | official ARM ELF extended ABI. Hence they are only decoded if |
| 7230 | the EABI version is not set. */ |
| 7231 | if (flags & EF_ARM_INTERWORK) |
| 7232 | fprintf (file, _(" [interworking enabled]")); |
| 7233 | |
| 7234 | if (flags & EF_ARM_APCS_26) |
| 7235 | fprintf (file, " [APCS-26]"); |
| 7236 | else |
| 7237 | fprintf (file, " [APCS-32]"); |
| 7238 | |
| 7239 | if (flags & EF_ARM_VFP_FLOAT) |
| 7240 | fprintf (file, _(" [VFP float format]")); |
| 7241 | else if (flags & EF_ARM_MAVERICK_FLOAT) |
| 7242 | fprintf (file, _(" [Maverick float format]")); |
| 7243 | else |
| 7244 | fprintf (file, _(" [FPA float format]")); |
| 7245 | |
| 7246 | if (flags & EF_ARM_APCS_FLOAT) |
| 7247 | fprintf (file, _(" [floats passed in float registers]")); |
| 7248 | |
| 7249 | if (flags & EF_ARM_PIC) |
| 7250 | fprintf (file, _(" [position independent]")); |
| 7251 | |
| 7252 | if (flags & EF_ARM_NEW_ABI) |
| 7253 | fprintf (file, _(" [new ABI]")); |
| 7254 | |
| 7255 | if (flags & EF_ARM_OLD_ABI) |
| 7256 | fprintf (file, _(" [old ABI]")); |
| 7257 | |
| 7258 | if (flags & EF_ARM_SOFT_FLOAT) |
| 7259 | fprintf (file, _(" [software FP]")); |
| 7260 | |
| 7261 | flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT |
| 7262 | | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI |
| 7263 | | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT |
| 7264 | | EF_ARM_MAVERICK_FLOAT); |
| 7265 | break; |
| 7266 | |
| 7267 | case EF_ARM_EABI_VER1: |
| 7268 | fprintf (file, _(" [Version1 EABI]")); |
| 7269 | |
| 7270 | if (flags & EF_ARM_SYMSARESORTED) |
| 7271 | fprintf (file, _(" [sorted symbol table]")); |
| 7272 | else |
| 7273 | fprintf (file, _(" [unsorted symbol table]")); |
| 7274 | |
| 7275 | flags &= ~ EF_ARM_SYMSARESORTED; |
| 7276 | break; |
| 7277 | |
| 7278 | case EF_ARM_EABI_VER2: |
| 7279 | fprintf (file, _(" [Version2 EABI]")); |
| 7280 | |
| 7281 | if (flags & EF_ARM_SYMSARESORTED) |
| 7282 | fprintf (file, _(" [sorted symbol table]")); |
| 7283 | else |
| 7284 | fprintf (file, _(" [unsorted symbol table]")); |
| 7285 | |
| 7286 | if (flags & EF_ARM_DYNSYMSUSESEGIDX) |
| 7287 | fprintf (file, _(" [dynamic symbols use segment index]")); |
| 7288 | |
| 7289 | if (flags & EF_ARM_MAPSYMSFIRST) |
| 7290 | fprintf (file, _(" [mapping symbols precede others]")); |
| 7291 | |
| 7292 | flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX |
| 7293 | | EF_ARM_MAPSYMSFIRST); |
| 7294 | break; |
| 7295 | |
| 7296 | case EF_ARM_EABI_VER3: |
| 7297 | fprintf (file, _(" [Version3 EABI]")); |
| 7298 | break; |
| 7299 | |
| 7300 | case EF_ARM_EABI_VER4: |
| 7301 | fprintf (file, _(" [Version4 EABI]")); |
| 7302 | goto eabi; |
| 7303 | |
| 7304 | case EF_ARM_EABI_VER5: |
| 7305 | fprintf (file, _(" [Version5 EABI]")); |
| 7306 | eabi: |
| 7307 | if (flags & EF_ARM_BE8) |
| 7308 | fprintf (file, _(" [BE8]")); |
| 7309 | |
| 7310 | if (flags & EF_ARM_LE8) |
| 7311 | fprintf (file, _(" [LE8]")); |
| 7312 | |
| 7313 | flags &= ~(EF_ARM_LE8 | EF_ARM_BE8); |
| 7314 | break; |
| 7315 | |
| 7316 | default: |
| 7317 | fprintf (file, _(" <EABI version unrecognised>")); |
| 7318 | break; |
| 7319 | } |
| 7320 | |
| 7321 | flags &= ~ EF_ARM_EABIMASK; |
| 7322 | |
| 7323 | if (flags & EF_ARM_RELEXEC) |
| 7324 | fprintf (file, _(" [relocatable executable]")); |
| 7325 | |
| 7326 | if (flags & EF_ARM_HASENTRY) |
| 7327 | fprintf (file, _(" [has entry point]")); |
| 7328 | |
| 7329 | flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY); |
| 7330 | |
| 7331 | if (flags) |
| 7332 | fprintf (file, _("<Unrecognised flag bits set>")); |
| 7333 | |
| 7334 | fputc ('\n', file); |
| 7335 | |
| 7336 | return TRUE; |
| 7337 | } |
| 7338 | |
| 7339 | static int |
| 7340 | elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type) |
| 7341 | { |
| 7342 | switch (ELF_ST_TYPE (elf_sym->st_info)) |
| 7343 | { |
| 7344 | case STT_ARM_TFUNC: |
| 7345 | return ELF_ST_TYPE (elf_sym->st_info); |
| 7346 | |
| 7347 | case STT_ARM_16BIT: |
| 7348 | /* If the symbol is not an object, return the STT_ARM_16BIT flag. |
| 7349 | This allows us to distinguish between data used by Thumb instructions |
| 7350 | and non-data (which is probably code) inside Thumb regions of an |
| 7351 | executable. */ |
| 7352 | if (type != STT_OBJECT && type != STT_TLS) |
| 7353 | return ELF_ST_TYPE (elf_sym->st_info); |
| 7354 | break; |
| 7355 | |
| 7356 | default: |
| 7357 | break; |
| 7358 | } |
| 7359 | |
| 7360 | return type; |
| 7361 | } |
| 7362 | |
| 7363 | static asection * |
| 7364 | elf32_arm_gc_mark_hook (asection *sec, |
| 7365 | struct bfd_link_info *info, |
| 7366 | Elf_Internal_Rela *rel, |
| 7367 | struct elf_link_hash_entry *h, |
| 7368 | Elf_Internal_Sym *sym) |
| 7369 | { |
| 7370 | if (h != NULL) |
| 7371 | switch (ELF32_R_TYPE (rel->r_info)) |
| 7372 | { |
| 7373 | case R_ARM_GNU_VTINHERIT: |
| 7374 | case R_ARM_GNU_VTENTRY: |
| 7375 | return NULL; |
| 7376 | } |
| 7377 | |
| 7378 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
| 7379 | } |
| 7380 | |
| 7381 | /* Update the got entry reference counts for the section being removed. */ |
| 7382 | |
| 7383 | static bfd_boolean |
| 7384 | elf32_arm_gc_sweep_hook (bfd * abfd, |
| 7385 | struct bfd_link_info * info, |
| 7386 | asection * sec, |
| 7387 | const Elf_Internal_Rela * relocs) |
| 7388 | { |
| 7389 | Elf_Internal_Shdr *symtab_hdr; |
| 7390 | struct elf_link_hash_entry **sym_hashes; |
| 7391 | bfd_signed_vma *local_got_refcounts; |
| 7392 | const Elf_Internal_Rela *rel, *relend; |
| 7393 | struct elf32_arm_link_hash_table * globals; |
| 7394 | |
| 7395 | globals = elf32_arm_hash_table (info); |
| 7396 | |
| 7397 | elf_section_data (sec)->local_dynrel = NULL; |
| 7398 | |
| 7399 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 7400 | sym_hashes = elf_sym_hashes (abfd); |
| 7401 | local_got_refcounts = elf_local_got_refcounts (abfd); |
| 7402 | |
| 7403 | relend = relocs + sec->reloc_count; |
| 7404 | for (rel = relocs; rel < relend; rel++) |
| 7405 | { |
| 7406 | unsigned long r_symndx; |
| 7407 | struct elf_link_hash_entry *h = NULL; |
| 7408 | int r_type; |
| 7409 | |
| 7410 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 7411 | if (r_symndx >= symtab_hdr->sh_info) |
| 7412 | { |
| 7413 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 7414 | while (h->root.type == bfd_link_hash_indirect |
| 7415 | || h->root.type == bfd_link_hash_warning) |
| 7416 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 7417 | } |
| 7418 | |
| 7419 | r_type = ELF32_R_TYPE (rel->r_info); |
| 7420 | r_type = arm_real_reloc_type (globals, r_type); |
| 7421 | switch (r_type) |
| 7422 | { |
| 7423 | case R_ARM_GOT32: |
| 7424 | case R_ARM_GOT_PREL: |
| 7425 | case R_ARM_TLS_GD32: |
| 7426 | case R_ARM_TLS_IE32: |
| 7427 | if (h != NULL) |
| 7428 | { |
| 7429 | if (h->got.refcount > 0) |
| 7430 | h->got.refcount -= 1; |
| 7431 | } |
| 7432 | else if (local_got_refcounts != NULL) |
| 7433 | { |
| 7434 | if (local_got_refcounts[r_symndx] > 0) |
| 7435 | local_got_refcounts[r_symndx] -= 1; |
| 7436 | } |
| 7437 | break; |
| 7438 | |
| 7439 | case R_ARM_TLS_LDM32: |
| 7440 | elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1; |
| 7441 | break; |
| 7442 | |
| 7443 | case R_ARM_ABS32: |
| 7444 | case R_ARM_ABS32_NOI: |
| 7445 | case R_ARM_REL32: |
| 7446 | case R_ARM_REL32_NOI: |
| 7447 | case R_ARM_PC24: |
| 7448 | case R_ARM_PLT32: |
| 7449 | case R_ARM_CALL: |
| 7450 | case R_ARM_JUMP24: |
| 7451 | case R_ARM_PREL31: |
| 7452 | case R_ARM_THM_CALL: |
| 7453 | case R_ARM_MOVW_ABS_NC: |
| 7454 | case R_ARM_MOVT_ABS: |
| 7455 | case R_ARM_MOVW_PREL_NC: |
| 7456 | case R_ARM_MOVT_PREL: |
| 7457 | case R_ARM_THM_MOVW_ABS_NC: |
| 7458 | case R_ARM_THM_MOVT_ABS: |
| 7459 | case R_ARM_THM_MOVW_PREL_NC: |
| 7460 | case R_ARM_THM_MOVT_PREL: |
| 7461 | /* Should the interworking branches be here also? */ |
| 7462 | |
| 7463 | if (h != NULL) |
| 7464 | { |
| 7465 | struct elf32_arm_link_hash_entry *eh; |
| 7466 | struct elf32_arm_relocs_copied **pp; |
| 7467 | struct elf32_arm_relocs_copied *p; |
| 7468 | |
| 7469 | eh = (struct elf32_arm_link_hash_entry *) h; |
| 7470 | |
| 7471 | if (h->plt.refcount > 0) |
| 7472 | { |
| 7473 | h->plt.refcount -= 1; |
| 7474 | if (ELF32_R_TYPE (rel->r_info) == R_ARM_THM_CALL) |
| 7475 | eh->plt_thumb_refcount--; |
| 7476 | } |
| 7477 | |
| 7478 | if (r_type == R_ARM_ABS32 |
| 7479 | || r_type == R_ARM_REL32 |
| 7480 | || r_type == R_ARM_ABS32_NOI |
| 7481 | || r_type == R_ARM_REL32_NOI) |
| 7482 | { |
| 7483 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; |
| 7484 | pp = &p->next) |
| 7485 | if (p->section == sec) |
| 7486 | { |
| 7487 | p->count -= 1; |
| 7488 | if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32 |
| 7489 | || ELF32_R_TYPE (rel->r_info) == R_ARM_REL32_NOI) |
| 7490 | p->pc_count -= 1; |
| 7491 | if (p->count == 0) |
| 7492 | *pp = p->next; |
| 7493 | break; |
| 7494 | } |
| 7495 | } |
| 7496 | } |
| 7497 | break; |
| 7498 | |
| 7499 | default: |
| 7500 | break; |
| 7501 | } |
| 7502 | } |
| 7503 | |
| 7504 | return TRUE; |
| 7505 | } |
| 7506 | |
| 7507 | /* Look through the relocs for a section during the first phase. */ |
| 7508 | |
| 7509 | static bfd_boolean |
| 7510 | elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info, |
| 7511 | asection *sec, const Elf_Internal_Rela *relocs) |
| 7512 | { |
| 7513 | Elf_Internal_Shdr *symtab_hdr; |
| 7514 | struct elf_link_hash_entry **sym_hashes; |
| 7515 | struct elf_link_hash_entry **sym_hashes_end; |
| 7516 | const Elf_Internal_Rela *rel; |
| 7517 | const Elf_Internal_Rela *rel_end; |
| 7518 | bfd *dynobj; |
| 7519 | asection *sreloc; |
| 7520 | bfd_vma *local_got_offsets; |
| 7521 | struct elf32_arm_link_hash_table *htab; |
| 7522 | |
| 7523 | if (info->relocatable) |
| 7524 | return TRUE; |
| 7525 | |
| 7526 | htab = elf32_arm_hash_table (info); |
| 7527 | sreloc = NULL; |
| 7528 | |
| 7529 | /* Create dynamic sections for relocatable executables so that we can |
| 7530 | copy relocations. */ |
| 7531 | if (htab->root.is_relocatable_executable |
| 7532 | && ! htab->root.dynamic_sections_created) |
| 7533 | { |
| 7534 | if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) |
| 7535 | return FALSE; |
| 7536 | } |
| 7537 | |
| 7538 | dynobj = elf_hash_table (info)->dynobj; |
| 7539 | local_got_offsets = elf_local_got_offsets (abfd); |
| 7540 | |
| 7541 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 7542 | sym_hashes = elf_sym_hashes (abfd); |
| 7543 | sym_hashes_end = sym_hashes |
| 7544 | + symtab_hdr->sh_size / sizeof (Elf32_External_Sym); |
| 7545 | |
| 7546 | if (!elf_bad_symtab (abfd)) |
| 7547 | sym_hashes_end -= symtab_hdr->sh_info; |
| 7548 | |
| 7549 | rel_end = relocs + sec->reloc_count; |
| 7550 | for (rel = relocs; rel < rel_end; rel++) |
| 7551 | { |
| 7552 | struct elf_link_hash_entry *h; |
| 7553 | struct elf32_arm_link_hash_entry *eh; |
| 7554 | unsigned long r_symndx; |
| 7555 | int r_type; |
| 7556 | |
| 7557 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 7558 | r_type = ELF32_R_TYPE (rel->r_info); |
| 7559 | r_type = arm_real_reloc_type (htab, r_type); |
| 7560 | |
| 7561 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
| 7562 | { |
| 7563 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd, |
| 7564 | r_symndx); |
| 7565 | return FALSE; |
| 7566 | } |
| 7567 | |
| 7568 | if (r_symndx < symtab_hdr->sh_info) |
| 7569 | h = NULL; |
| 7570 | else |
| 7571 | { |
| 7572 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 7573 | while (h->root.type == bfd_link_hash_indirect |
| 7574 | || h->root.type == bfd_link_hash_warning) |
| 7575 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 7576 | } |
| 7577 | |
| 7578 | eh = (struct elf32_arm_link_hash_entry *) h; |
| 7579 | |
| 7580 | switch (r_type) |
| 7581 | { |
| 7582 | case R_ARM_GOT32: |
| 7583 | case R_ARM_GOT_PREL: |
| 7584 | case R_ARM_TLS_GD32: |
| 7585 | case R_ARM_TLS_IE32: |
| 7586 | /* This symbol requires a global offset table entry. */ |
| 7587 | { |
| 7588 | int tls_type, old_tls_type; |
| 7589 | |
| 7590 | switch (r_type) |
| 7591 | { |
| 7592 | case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break; |
| 7593 | case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break; |
| 7594 | default: tls_type = GOT_NORMAL; break; |
| 7595 | } |
| 7596 | |
| 7597 | if (h != NULL) |
| 7598 | { |
| 7599 | h->got.refcount++; |
| 7600 | old_tls_type = elf32_arm_hash_entry (h)->tls_type; |
| 7601 | } |
| 7602 | else |
| 7603 | { |
| 7604 | bfd_signed_vma *local_got_refcounts; |
| 7605 | |
| 7606 | /* This is a global offset table entry for a local symbol. */ |
| 7607 | local_got_refcounts = elf_local_got_refcounts (abfd); |
| 7608 | if (local_got_refcounts == NULL) |
| 7609 | { |
| 7610 | bfd_size_type size; |
| 7611 | |
| 7612 | size = symtab_hdr->sh_info; |
| 7613 | size *= (sizeof (bfd_signed_vma) + sizeof(char)); |
| 7614 | local_got_refcounts = bfd_zalloc (abfd, size); |
| 7615 | if (local_got_refcounts == NULL) |
| 7616 | return FALSE; |
| 7617 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
| 7618 | elf32_arm_local_got_tls_type (abfd) |
| 7619 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); |
| 7620 | } |
| 7621 | local_got_refcounts[r_symndx] += 1; |
| 7622 | old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx]; |
| 7623 | } |
| 7624 | |
| 7625 | /* We will already have issued an error message if there is a |
| 7626 | TLS / non-TLS mismatch, based on the symbol type. We don't |
| 7627 | support any linker relaxations. So just combine any TLS |
| 7628 | types needed. */ |
| 7629 | if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL |
| 7630 | && tls_type != GOT_NORMAL) |
| 7631 | tls_type |= old_tls_type; |
| 7632 | |
| 7633 | if (old_tls_type != tls_type) |
| 7634 | { |
| 7635 | if (h != NULL) |
| 7636 | elf32_arm_hash_entry (h)->tls_type = tls_type; |
| 7637 | else |
| 7638 | elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type; |
| 7639 | } |
| 7640 | } |
| 7641 | /* Fall through */ |
| 7642 | |
| 7643 | case R_ARM_TLS_LDM32: |
| 7644 | if (r_type == R_ARM_TLS_LDM32) |
| 7645 | htab->tls_ldm_got.refcount++; |
| 7646 | /* Fall through */ |
| 7647 | |
| 7648 | case R_ARM_GOTOFF32: |
| 7649 | case R_ARM_GOTPC: |
| 7650 | if (htab->sgot == NULL) |
| 7651 | { |
| 7652 | if (htab->root.dynobj == NULL) |
| 7653 | htab->root.dynobj = abfd; |
| 7654 | if (!create_got_section (htab->root.dynobj, info)) |
| 7655 | return FALSE; |
| 7656 | } |
| 7657 | break; |
| 7658 | |
| 7659 | case R_ARM_ABS12: |
| 7660 | /* VxWorks uses dynamic R_ARM_ABS12 relocations for |
| 7661 | ldr __GOTT_INDEX__ offsets. */ |
| 7662 | if (!htab->vxworks_p) |
| 7663 | break; |
| 7664 | /* Fall through */ |
| 7665 | |
| 7666 | case R_ARM_ABS32: |
| 7667 | case R_ARM_ABS32_NOI: |
| 7668 | case R_ARM_REL32: |
| 7669 | case R_ARM_REL32_NOI: |
| 7670 | case R_ARM_PC24: |
| 7671 | case R_ARM_PLT32: |
| 7672 | case R_ARM_CALL: |
| 7673 | case R_ARM_JUMP24: |
| 7674 | case R_ARM_PREL31: |
| 7675 | case R_ARM_THM_CALL: |
| 7676 | case R_ARM_MOVW_ABS_NC: |
| 7677 | case R_ARM_MOVT_ABS: |
| 7678 | case R_ARM_MOVW_PREL_NC: |
| 7679 | case R_ARM_MOVT_PREL: |
| 7680 | case R_ARM_THM_MOVW_ABS_NC: |
| 7681 | case R_ARM_THM_MOVT_ABS: |
| 7682 | case R_ARM_THM_MOVW_PREL_NC: |
| 7683 | case R_ARM_THM_MOVT_PREL: |
| 7684 | /* Should the interworking branches be listed here? */ |
| 7685 | if (h != NULL) |
| 7686 | { |
| 7687 | /* If this reloc is in a read-only section, we might |
| 7688 | need a copy reloc. We can't check reliably at this |
| 7689 | stage whether the section is read-only, as input |
| 7690 | sections have not yet been mapped to output sections. |
| 7691 | Tentatively set the flag for now, and correct in |
| 7692 | adjust_dynamic_symbol. */ |
| 7693 | if (!info->shared) |
| 7694 | h->non_got_ref = 1; |
| 7695 | |
| 7696 | /* We may need a .plt entry if the function this reloc |
| 7697 | refers to is in a different object. We can't tell for |
| 7698 | sure yet, because something later might force the |
| 7699 | symbol local. */ |
| 7700 | if (r_type != R_ARM_ABS32 |
| 7701 | && r_type != R_ARM_REL32 |
| 7702 | && r_type != R_ARM_ABS32_NOI |
| 7703 | && r_type != R_ARM_REL32_NOI |
| 7704 | && r_type != R_ARM_ABS12) |
| 7705 | h->needs_plt = 1; |
| 7706 | |
| 7707 | /* If we create a PLT entry, this relocation will reference |
| 7708 | it, even if it's an ABS32 relocation. */ |
| 7709 | h->plt.refcount += 1; |
| 7710 | |
| 7711 | if (r_type == R_ARM_THM_CALL) |
| 7712 | eh->plt_thumb_refcount += 1; |
| 7713 | } |
| 7714 | |
| 7715 | /* If we are creating a shared library or relocatable executable, |
| 7716 | and this is a reloc against a global symbol, or a non PC |
| 7717 | relative reloc against a local symbol, then we need to copy |
| 7718 | the reloc into the shared library. However, if we are linking |
| 7719 | with -Bsymbolic, we do not need to copy a reloc against a |
| 7720 | global symbol which is defined in an object we are |
| 7721 | including in the link (i.e., DEF_REGULAR is set). At |
| 7722 | this point we have not seen all the input files, so it is |
| 7723 | possible that DEF_REGULAR is not set now but will be set |
| 7724 | later (it is never cleared). We account for that |
| 7725 | possibility below by storing information in the |
| 7726 | relocs_copied field of the hash table entry. */ |
| 7727 | if ((info->shared || htab->root.is_relocatable_executable) |
| 7728 | && (sec->flags & SEC_ALLOC) != 0 |
| 7729 | && ((r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI) |
| 7730 | || (h != NULL && ! h->needs_plt |
| 7731 | && (! info->symbolic || ! h->def_regular)))) |
| 7732 | { |
| 7733 | struct elf32_arm_relocs_copied *p, **head; |
| 7734 | |
| 7735 | /* When creating a shared object, we must copy these |
| 7736 | reloc types into the output file. We create a reloc |
| 7737 | section in dynobj and make room for this reloc. */ |
| 7738 | if (sreloc == NULL) |
| 7739 | { |
| 7740 | const char * name; |
| 7741 | |
| 7742 | name = (bfd_elf_string_from_elf_section |
| 7743 | (abfd, |
| 7744 | elf_elfheader (abfd)->e_shstrndx, |
| 7745 | elf_section_data (sec)->rel_hdr.sh_name)); |
| 7746 | if (name == NULL) |
| 7747 | return FALSE; |
| 7748 | |
| 7749 | BFD_ASSERT (reloc_section_p (htab, name, sec)); |
| 7750 | |
| 7751 | sreloc = bfd_get_section_by_name (dynobj, name); |
| 7752 | if (sreloc == NULL) |
| 7753 | { |
| 7754 | flagword flags; |
| 7755 | |
| 7756 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
| 7757 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); |
| 7758 | if ((sec->flags & SEC_ALLOC) != 0 |
| 7759 | /* BPABI objects never have dynamic |
| 7760 | relocations mapped. */ |
| 7761 | && !htab->symbian_p) |
| 7762 | flags |= SEC_ALLOC | SEC_LOAD; |
| 7763 | sreloc = bfd_make_section_with_flags (dynobj, |
| 7764 | name, |
| 7765 | flags); |
| 7766 | if (sreloc == NULL |
| 7767 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) |
| 7768 | return FALSE; |
| 7769 | } |
| 7770 | |
| 7771 | elf_section_data (sec)->sreloc = sreloc; |
| 7772 | } |
| 7773 | |
| 7774 | /* If this is a global symbol, we count the number of |
| 7775 | relocations we need for this symbol. */ |
| 7776 | if (h != NULL) |
| 7777 | { |
| 7778 | head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied; |
| 7779 | } |
| 7780 | else |
| 7781 | { |
| 7782 | /* Track dynamic relocs needed for local syms too. |
| 7783 | We really need local syms available to do this |
| 7784 | easily. Oh well. */ |
| 7785 | |
| 7786 | asection *s; |
| 7787 | void *vpp; |
| 7788 | |
| 7789 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
| 7790 | sec, r_symndx); |
| 7791 | if (s == NULL) |
| 7792 | return FALSE; |
| 7793 | |
| 7794 | vpp = &elf_section_data (s)->local_dynrel; |
| 7795 | head = (struct elf32_arm_relocs_copied **) vpp; |
| 7796 | } |
| 7797 | |
| 7798 | p = *head; |
| 7799 | if (p == NULL || p->section != sec) |
| 7800 | { |
| 7801 | bfd_size_type amt = sizeof *p; |
| 7802 | |
| 7803 | p = bfd_alloc (htab->root.dynobj, amt); |
| 7804 | if (p == NULL) |
| 7805 | return FALSE; |
| 7806 | p->next = *head; |
| 7807 | *head = p; |
| 7808 | p->section = sec; |
| 7809 | p->count = 0; |
| 7810 | p->pc_count = 0; |
| 7811 | } |
| 7812 | |
| 7813 | if (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI) |
| 7814 | p->pc_count += 1; |
| 7815 | p->count += 1; |
| 7816 | } |
| 7817 | break; |
| 7818 | |
| 7819 | /* This relocation describes the C++ object vtable hierarchy. |
| 7820 | Reconstruct it for later use during GC. */ |
| 7821 | case R_ARM_GNU_VTINHERIT: |
| 7822 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| 7823 | return FALSE; |
| 7824 | break; |
| 7825 | |
| 7826 | /* This relocation describes which C++ vtable entries are actually |
| 7827 | used. Record for later use during GC. */ |
| 7828 | case R_ARM_GNU_VTENTRY: |
| 7829 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) |
| 7830 | return FALSE; |
| 7831 | break; |
| 7832 | } |
| 7833 | } |
| 7834 | |
| 7835 | return TRUE; |
| 7836 | } |
| 7837 | |
| 7838 | /* Unwinding tables are not referenced directly. This pass marks them as |
| 7839 | required if the corresponding code section is marked. */ |
| 7840 | |
| 7841 | static bfd_boolean |
| 7842 | elf32_arm_gc_mark_extra_sections(struct bfd_link_info *info, |
| 7843 | elf_gc_mark_hook_fn gc_mark_hook) |
| 7844 | { |
| 7845 | bfd *sub; |
| 7846 | Elf_Internal_Shdr **elf_shdrp; |
| 7847 | bfd_boolean again; |
| 7848 | |
| 7849 | /* Marking EH data may cause additional code sections to be marked, |
| 7850 | requiring multiple passes. */ |
| 7851 | again = TRUE; |
| 7852 | while (again) |
| 7853 | { |
| 7854 | again = FALSE; |
| 7855 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) |
| 7856 | { |
| 7857 | asection *o; |
| 7858 | |
| 7859 | if (bfd_get_flavour (sub) != bfd_target_elf_flavour) |
| 7860 | continue; |
| 7861 | |
| 7862 | elf_shdrp = elf_elfsections (sub); |
| 7863 | for (o = sub->sections; o != NULL; o = o->next) |
| 7864 | { |
| 7865 | Elf_Internal_Shdr *hdr; |
| 7866 | hdr = &elf_section_data (o)->this_hdr; |
| 7867 | if (hdr->sh_type == SHT_ARM_EXIDX && hdr->sh_link |
| 7868 | && !o->gc_mark |
| 7869 | && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark) |
| 7870 | { |
| 7871 | again = TRUE; |
| 7872 | if (!_bfd_elf_gc_mark (info, o, gc_mark_hook)) |
| 7873 | return FALSE; |
| 7874 | } |
| 7875 | } |
| 7876 | } |
| 7877 | } |
| 7878 | |
| 7879 | return TRUE; |
| 7880 | } |
| 7881 | |
| 7882 | /* Treat mapping symbols as special target symbols. */ |
| 7883 | |
| 7884 | static bfd_boolean |
| 7885 | elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym) |
| 7886 | { |
| 7887 | return bfd_is_arm_special_symbol_name (sym->name, |
| 7888 | BFD_ARM_SPECIAL_SYM_TYPE_ANY); |
| 7889 | } |
| 7890 | |
| 7891 | /* This is a copy of elf_find_function() from elf.c except that |
| 7892 | ARM mapping symbols are ignored when looking for function names |
| 7893 | and STT_ARM_TFUNC is considered to a function type. */ |
| 7894 | |
| 7895 | static bfd_boolean |
| 7896 | arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED, |
| 7897 | asection * section, |
| 7898 | asymbol ** symbols, |
| 7899 | bfd_vma offset, |
| 7900 | const char ** filename_ptr, |
| 7901 | const char ** functionname_ptr) |
| 7902 | { |
| 7903 | const char * filename = NULL; |
| 7904 | asymbol * func = NULL; |
| 7905 | bfd_vma low_func = 0; |
| 7906 | asymbol ** p; |
| 7907 | |
| 7908 | for (p = symbols; *p != NULL; p++) |
| 7909 | { |
| 7910 | elf_symbol_type *q; |
| 7911 | |
| 7912 | q = (elf_symbol_type *) *p; |
| 7913 | |
| 7914 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
| 7915 | { |
| 7916 | default: |
| 7917 | break; |
| 7918 | case STT_FILE: |
| 7919 | filename = bfd_asymbol_name (&q->symbol); |
| 7920 | break; |
| 7921 | case STT_FUNC: |
| 7922 | case STT_ARM_TFUNC: |
| 7923 | case STT_NOTYPE: |
| 7924 | /* Skip mapping symbols. */ |
| 7925 | if ((q->symbol.flags & BSF_LOCAL) |
| 7926 | && bfd_is_arm_special_symbol_name (q->symbol.name, |
| 7927 | BFD_ARM_SPECIAL_SYM_TYPE_ANY)) |
| 7928 | continue; |
| 7929 | /* Fall through. */ |
| 7930 | if (bfd_get_section (&q->symbol) == section |
| 7931 | && q->symbol.value >= low_func |
| 7932 | && q->symbol.value <= offset) |
| 7933 | { |
| 7934 | func = (asymbol *) q; |
| 7935 | low_func = q->symbol.value; |
| 7936 | } |
| 7937 | break; |
| 7938 | } |
| 7939 | } |
| 7940 | |
| 7941 | if (func == NULL) |
| 7942 | return FALSE; |
| 7943 | |
| 7944 | if (filename_ptr) |
| 7945 | *filename_ptr = filename; |
| 7946 | if (functionname_ptr) |
| 7947 | *functionname_ptr = bfd_asymbol_name (func); |
| 7948 | |
| 7949 | return TRUE; |
| 7950 | } |
| 7951 | |
| 7952 | |
| 7953 | /* Find the nearest line to a particular section and offset, for error |
| 7954 | reporting. This code is a duplicate of the code in elf.c, except |
| 7955 | that it uses arm_elf_find_function. */ |
| 7956 | |
| 7957 | static bfd_boolean |
| 7958 | elf32_arm_find_nearest_line (bfd * abfd, |
| 7959 | asection * section, |
| 7960 | asymbol ** symbols, |
| 7961 | bfd_vma offset, |
| 7962 | const char ** filename_ptr, |
| 7963 | const char ** functionname_ptr, |
| 7964 | unsigned int * line_ptr) |
| 7965 | { |
| 7966 | bfd_boolean found = FALSE; |
| 7967 | |
| 7968 | /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */ |
| 7969 | |
| 7970 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, |
| 7971 | filename_ptr, functionname_ptr, |
| 7972 | line_ptr, 0, |
| 7973 | & elf_tdata (abfd)->dwarf2_find_line_info)) |
| 7974 | { |
| 7975 | if (!*functionname_ptr) |
| 7976 | arm_elf_find_function (abfd, section, symbols, offset, |
| 7977 | *filename_ptr ? NULL : filename_ptr, |
| 7978 | functionname_ptr); |
| 7979 | |
| 7980 | return TRUE; |
| 7981 | } |
| 7982 | |
| 7983 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, |
| 7984 | & found, filename_ptr, |
| 7985 | functionname_ptr, line_ptr, |
| 7986 | & elf_tdata (abfd)->line_info)) |
| 7987 | return FALSE; |
| 7988 | |
| 7989 | if (found && (*functionname_ptr || *line_ptr)) |
| 7990 | return TRUE; |
| 7991 | |
| 7992 | if (symbols == NULL) |
| 7993 | return FALSE; |
| 7994 | |
| 7995 | if (! arm_elf_find_function (abfd, section, symbols, offset, |
| 7996 | filename_ptr, functionname_ptr)) |
| 7997 | return FALSE; |
| 7998 | |
| 7999 | *line_ptr = 0; |
| 8000 | return TRUE; |
| 8001 | } |
| 8002 | |
| 8003 | static bfd_boolean |
| 8004 | elf32_arm_find_inliner_info (bfd * abfd, |
| 8005 | const char ** filename_ptr, |
| 8006 | const char ** functionname_ptr, |
| 8007 | unsigned int * line_ptr) |
| 8008 | { |
| 8009 | bfd_boolean found; |
| 8010 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, |
| 8011 | functionname_ptr, line_ptr, |
| 8012 | & elf_tdata (abfd)->dwarf2_find_line_info); |
| 8013 | return found; |
| 8014 | } |
| 8015 | |
| 8016 | /* Adjust a symbol defined by a dynamic object and referenced by a |
| 8017 | regular object. The current definition is in some section of the |
| 8018 | dynamic object, but we're not including those sections. We have to |
| 8019 | change the definition to something the rest of the link can |
| 8020 | understand. */ |
| 8021 | |
| 8022 | static bfd_boolean |
| 8023 | elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info, |
| 8024 | struct elf_link_hash_entry * h) |
| 8025 | { |
| 8026 | bfd * dynobj; |
| 8027 | asection * s; |
| 8028 | struct elf32_arm_link_hash_entry * eh; |
| 8029 | struct elf32_arm_link_hash_table *globals; |
| 8030 | |
| 8031 | globals = elf32_arm_hash_table (info); |
| 8032 | dynobj = elf_hash_table (info)->dynobj; |
| 8033 | |
| 8034 | /* Make sure we know what is going on here. */ |
| 8035 | BFD_ASSERT (dynobj != NULL |
| 8036 | && (h->needs_plt |
| 8037 | || h->u.weakdef != NULL |
| 8038 | || (h->def_dynamic |
| 8039 | && h->ref_regular |
| 8040 | && !h->def_regular))); |
| 8041 | |
| 8042 | eh = (struct elf32_arm_link_hash_entry *) h; |
| 8043 | |
| 8044 | /* If this is a function, put it in the procedure linkage table. We |
| 8045 | will fill in the contents of the procedure linkage table later, |
| 8046 | when we know the address of the .got section. */ |
| 8047 | if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC |
| 8048 | || h->needs_plt) |
| 8049 | { |
| 8050 | if (h->plt.refcount <= 0 |
| 8051 | || SYMBOL_CALLS_LOCAL (info, h) |
| 8052 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
| 8053 | && h->root.type == bfd_link_hash_undefweak)) |
| 8054 | { |
| 8055 | /* This case can occur if we saw a PLT32 reloc in an input |
| 8056 | file, but the symbol was never referred to by a dynamic |
| 8057 | object, or if all references were garbage collected. In |
| 8058 | such a case, we don't actually need to build a procedure |
| 8059 | linkage table, and we can just do a PC24 reloc instead. */ |
| 8060 | h->plt.offset = (bfd_vma) -1; |
| 8061 | eh->plt_thumb_refcount = 0; |
| 8062 | h->needs_plt = 0; |
| 8063 | } |
| 8064 | |
| 8065 | return TRUE; |
| 8066 | } |
| 8067 | else |
| 8068 | { |
| 8069 | /* It's possible that we incorrectly decided a .plt reloc was |
| 8070 | needed for an R_ARM_PC24 or similar reloc to a non-function sym |
| 8071 | in check_relocs. We can't decide accurately between function |
| 8072 | and non-function syms in check-relocs; Objects loaded later in |
| 8073 | the link may change h->type. So fix it now. */ |
| 8074 | h->plt.offset = (bfd_vma) -1; |
| 8075 | eh->plt_thumb_refcount = 0; |
| 8076 | } |
| 8077 | |
| 8078 | /* If this is a weak symbol, and there is a real definition, the |
| 8079 | processor independent code will have arranged for us to see the |
| 8080 | real definition first, and we can just use the same value. */ |
| 8081 | if (h->u.weakdef != NULL) |
| 8082 | { |
| 8083 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
| 8084 | || h->u.weakdef->root.type == bfd_link_hash_defweak); |
| 8085 | h->root.u.def.section = h->u.weakdef->root.u.def.section; |
| 8086 | h->root.u.def.value = h->u.weakdef->root.u.def.value; |
| 8087 | return TRUE; |
| 8088 | } |
| 8089 | |
| 8090 | /* If there are no non-GOT references, we do not need a copy |
| 8091 | relocation. */ |
| 8092 | if (!h->non_got_ref) |
| 8093 | return TRUE; |
| 8094 | |
| 8095 | /* This is a reference to a symbol defined by a dynamic object which |
| 8096 | is not a function. */ |
| 8097 | |
| 8098 | /* If we are creating a shared library, we must presume that the |
| 8099 | only references to the symbol are via the global offset table. |
| 8100 | For such cases we need not do anything here; the relocations will |
| 8101 | be handled correctly by relocate_section. Relocatable executables |
| 8102 | can reference data in shared objects directly, so we don't need to |
| 8103 | do anything here. */ |
| 8104 | if (info->shared || globals->root.is_relocatable_executable) |
| 8105 | return TRUE; |
| 8106 | |
| 8107 | if (h->size == 0) |
| 8108 | { |
| 8109 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), |
| 8110 | h->root.root.string); |
| 8111 | return TRUE; |
| 8112 | } |
| 8113 | |
| 8114 | /* We must allocate the symbol in our .dynbss section, which will |
| 8115 | become part of the .bss section of the executable. There will be |
| 8116 | an entry for this symbol in the .dynsym section. The dynamic |
| 8117 | object will contain position independent code, so all references |
| 8118 | from the dynamic object to this symbol will go through the global |
| 8119 | offset table. The dynamic linker will use the .dynsym entry to |
| 8120 | determine the address it must put in the global offset table, so |
| 8121 | both the dynamic object and the regular object will refer to the |
| 8122 | same memory location for the variable. */ |
| 8123 | s = bfd_get_section_by_name (dynobj, ".dynbss"); |
| 8124 | BFD_ASSERT (s != NULL); |
| 8125 | |
| 8126 | /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to |
| 8127 | copy the initial value out of the dynamic object and into the |
| 8128 | runtime process image. We need to remember the offset into the |
| 8129 | .rel(a).bss section we are going to use. */ |
| 8130 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
| 8131 | { |
| 8132 | asection *srel; |
| 8133 | |
| 8134 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss")); |
| 8135 | BFD_ASSERT (srel != NULL); |
| 8136 | srel->size += RELOC_SIZE (globals); |
| 8137 | h->needs_copy = 1; |
| 8138 | } |
| 8139 | |
| 8140 | return _bfd_elf_adjust_dynamic_copy (h, s); |
| 8141 | } |
| 8142 | |
| 8143 | /* Allocate space in .plt, .got and associated reloc sections for |
| 8144 | dynamic relocs. */ |
| 8145 | |
| 8146 | static bfd_boolean |
| 8147 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
| 8148 | { |
| 8149 | struct bfd_link_info *info; |
| 8150 | struct elf32_arm_link_hash_table *htab; |
| 8151 | struct elf32_arm_link_hash_entry *eh; |
| 8152 | struct elf32_arm_relocs_copied *p; |
| 8153 | |
| 8154 | eh = (struct elf32_arm_link_hash_entry *) h; |
| 8155 | |
| 8156 | if (h->root.type == bfd_link_hash_indirect) |
| 8157 | return TRUE; |
| 8158 | |
| 8159 | if (h->root.type == bfd_link_hash_warning) |
| 8160 | /* When warning symbols are created, they **replace** the "real" |
| 8161 | entry in the hash table, thus we never get to see the real |
| 8162 | symbol in a hash traversal. So look at it now. */ |
| 8163 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 8164 | |
| 8165 | info = (struct bfd_link_info *) inf; |
| 8166 | htab = elf32_arm_hash_table (info); |
| 8167 | |
| 8168 | if (htab->root.dynamic_sections_created |
| 8169 | && h->plt.refcount > 0) |
| 8170 | { |
| 8171 | /* Make sure this symbol is output as a dynamic symbol. |
| 8172 | Undefined weak syms won't yet be marked as dynamic. */ |
| 8173 | if (h->dynindx == -1 |
| 8174 | && !h->forced_local) |
| 8175 | { |
| 8176 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 8177 | return FALSE; |
| 8178 | } |
| 8179 | |
| 8180 | if (info->shared |
| 8181 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
| 8182 | { |
| 8183 | asection *s = htab->splt; |
| 8184 | |
| 8185 | /* If this is the first .plt entry, make room for the special |
| 8186 | first entry. */ |
| 8187 | if (s->size == 0) |
| 8188 | s->size += htab->plt_header_size; |
| 8189 | |
| 8190 | h->plt.offset = s->size; |
| 8191 | |
| 8192 | /* If we will insert a Thumb trampoline before this PLT, leave room |
| 8193 | for it. */ |
| 8194 | if (!htab->use_blx && eh->plt_thumb_refcount > 0) |
| 8195 | { |
| 8196 | h->plt.offset += PLT_THUMB_STUB_SIZE; |
| 8197 | s->size += PLT_THUMB_STUB_SIZE; |
| 8198 | } |
| 8199 | |
| 8200 | /* If this symbol is not defined in a regular file, and we are |
| 8201 | not generating a shared library, then set the symbol to this |
| 8202 | location in the .plt. This is required to make function |
| 8203 | pointers compare as equal between the normal executable and |
| 8204 | the shared library. */ |
| 8205 | if (! info->shared |
| 8206 | && !h->def_regular) |
| 8207 | { |
| 8208 | h->root.u.def.section = s; |
| 8209 | h->root.u.def.value = h->plt.offset; |
| 8210 | |
| 8211 | /* Make sure the function is not marked as Thumb, in case |
| 8212 | it is the target of an ABS32 relocation, which will |
| 8213 | point to the PLT entry. */ |
| 8214 | if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC) |
| 8215 | h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC); |
| 8216 | } |
| 8217 | |
| 8218 | /* Make room for this entry. */ |
| 8219 | s->size += htab->plt_entry_size; |
| 8220 | |
| 8221 | if (!htab->symbian_p) |
| 8222 | { |
| 8223 | /* We also need to make an entry in the .got.plt section, which |
| 8224 | will be placed in the .got section by the linker script. */ |
| 8225 | eh->plt_got_offset = htab->sgotplt->size; |
| 8226 | htab->sgotplt->size += 4; |
| 8227 | } |
| 8228 | |
| 8229 | /* We also need to make an entry in the .rel(a).plt section. */ |
| 8230 | htab->srelplt->size += RELOC_SIZE (htab); |
| 8231 | |
| 8232 | /* VxWorks executables have a second set of relocations for |
| 8233 | each PLT entry. They go in a separate relocation section, |
| 8234 | which is processed by the kernel loader. */ |
| 8235 | if (htab->vxworks_p && !info->shared) |
| 8236 | { |
| 8237 | /* There is a relocation for the initial PLT entry: |
| 8238 | an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */ |
| 8239 | if (h->plt.offset == htab->plt_header_size) |
| 8240 | htab->srelplt2->size += RELOC_SIZE (htab); |
| 8241 | |
| 8242 | /* There are two extra relocations for each subsequent |
| 8243 | PLT entry: an R_ARM_32 relocation for the GOT entry, |
| 8244 | and an R_ARM_32 relocation for the PLT entry. */ |
| 8245 | htab->srelplt2->size += RELOC_SIZE (htab) * 2; |
| 8246 | } |
| 8247 | } |
| 8248 | else |
| 8249 | { |
| 8250 | h->plt.offset = (bfd_vma) -1; |
| 8251 | h->needs_plt = 0; |
| 8252 | } |
| 8253 | } |
| 8254 | else |
| 8255 | { |
| 8256 | h->plt.offset = (bfd_vma) -1; |
| 8257 | h->needs_plt = 0; |
| 8258 | } |
| 8259 | |
| 8260 | if (h->got.refcount > 0) |
| 8261 | { |
| 8262 | asection *s; |
| 8263 | bfd_boolean dyn; |
| 8264 | int tls_type = elf32_arm_hash_entry (h)->tls_type; |
| 8265 | int indx; |
| 8266 | |
| 8267 | /* Make sure this symbol is output as a dynamic symbol. |
| 8268 | Undefined weak syms won't yet be marked as dynamic. */ |
| 8269 | if (h->dynindx == -1 |
| 8270 | && !h->forced_local) |
| 8271 | { |
| 8272 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 8273 | return FALSE; |
| 8274 | } |
| 8275 | |
| 8276 | if (!htab->symbian_p) |
| 8277 | { |
| 8278 | s = htab->sgot; |
| 8279 | h->got.offset = s->size; |
| 8280 | |
| 8281 | if (tls_type == GOT_UNKNOWN) |
| 8282 | abort (); |
| 8283 | |
| 8284 | if (tls_type == GOT_NORMAL) |
| 8285 | /* Non-TLS symbols need one GOT slot. */ |
| 8286 | s->size += 4; |
| 8287 | else |
| 8288 | { |
| 8289 | if (tls_type & GOT_TLS_GD) |
| 8290 | /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */ |
| 8291 | s->size += 8; |
| 8292 | if (tls_type & GOT_TLS_IE) |
| 8293 | /* R_ARM_TLS_IE32 needs one GOT slot. */ |
| 8294 | s->size += 4; |
| 8295 | } |
| 8296 | |
| 8297 | dyn = htab->root.dynamic_sections_created; |
| 8298 | |
| 8299 | indx = 0; |
| 8300 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
| 8301 | && (!info->shared |
| 8302 | || !SYMBOL_REFERENCES_LOCAL (info, h))) |
| 8303 | indx = h->dynindx; |
| 8304 | |
| 8305 | if (tls_type != GOT_NORMAL |
| 8306 | && (info->shared || indx != 0) |
| 8307 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
| 8308 | || h->root.type != bfd_link_hash_undefweak)) |
| 8309 | { |
| 8310 | if (tls_type & GOT_TLS_IE) |
| 8311 | htab->srelgot->size += RELOC_SIZE (htab); |
| 8312 | |
| 8313 | if (tls_type & GOT_TLS_GD) |
| 8314 | htab->srelgot->size += RELOC_SIZE (htab); |
| 8315 | |
| 8316 | if ((tls_type & GOT_TLS_GD) && indx != 0) |
| 8317 | htab->srelgot->size += RELOC_SIZE (htab); |
| 8318 | } |
| 8319 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
| 8320 | || h->root.type != bfd_link_hash_undefweak) |
| 8321 | && (info->shared |
| 8322 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) |
| 8323 | htab->srelgot->size += RELOC_SIZE (htab); |
| 8324 | } |
| 8325 | } |
| 8326 | else |
| 8327 | h->got.offset = (bfd_vma) -1; |
| 8328 | |
| 8329 | /* Allocate stubs for exported Thumb functions on v4t. */ |
| 8330 | if (!htab->use_blx && h->dynindx != -1 |
| 8331 | && h->def_regular |
| 8332 | && ELF_ST_TYPE (h->type) == STT_ARM_TFUNC |
| 8333 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
| 8334 | { |
| 8335 | struct elf_link_hash_entry * th; |
| 8336 | struct bfd_link_hash_entry * bh; |
| 8337 | struct elf_link_hash_entry * myh; |
| 8338 | char name[1024]; |
| 8339 | asection *s; |
| 8340 | bh = NULL; |
| 8341 | /* Create a new symbol to regist the real location of the function. */ |
| 8342 | s = h->root.u.def.section; |
| 8343 | sprintf(name, "__real_%s", h->root.root.string); |
| 8344 | _bfd_generic_link_add_one_symbol (info, s->owner, |
| 8345 | name, BSF_GLOBAL, s, |
| 8346 | h->root.u.def.value, |
| 8347 | NULL, TRUE, FALSE, &bh); |
| 8348 | |
| 8349 | myh = (struct elf_link_hash_entry *) bh; |
| 8350 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC); |
| 8351 | myh->forced_local = 1; |
| 8352 | eh->export_glue = myh; |
| 8353 | th = record_arm_to_thumb_glue (info, h); |
| 8354 | /* Point the symbol at the stub. */ |
| 8355 | h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC); |
| 8356 | h->root.u.def.section = th->root.u.def.section; |
| 8357 | h->root.u.def.value = th->root.u.def.value & ~1; |
| 8358 | } |
| 8359 | |
| 8360 | if (eh->relocs_copied == NULL) |
| 8361 | return TRUE; |
| 8362 | |
| 8363 | /* In the shared -Bsymbolic case, discard space allocated for |
| 8364 | dynamic pc-relative relocs against symbols which turn out to be |
| 8365 | defined in regular objects. For the normal shared case, discard |
| 8366 | space for pc-relative relocs that have become local due to symbol |
| 8367 | visibility changes. */ |
| 8368 | |
| 8369 | if (info->shared || htab->root.is_relocatable_executable) |
| 8370 | { |
| 8371 | /* The only relocs that use pc_count are R_ARM_REL32 and |
| 8372 | R_ARM_REL32_NOI, which will appear on something like |
| 8373 | ".long foo - .". We want calls to protected symbols to resolve |
| 8374 | directly to the function rather than going via the plt. If people |
| 8375 | want function pointer comparisons to work as expected then they |
| 8376 | should avoid writing assembly like ".long foo - .". */ |
| 8377 | if (SYMBOL_CALLS_LOCAL (info, h)) |
| 8378 | { |
| 8379 | struct elf32_arm_relocs_copied **pp; |
| 8380 | |
| 8381 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; ) |
| 8382 | { |
| 8383 | p->count -= p->pc_count; |
| 8384 | p->pc_count = 0; |
| 8385 | if (p->count == 0) |
| 8386 | *pp = p->next; |
| 8387 | else |
| 8388 | pp = &p->next; |
| 8389 | } |
| 8390 | } |
| 8391 | |
| 8392 | /* Also discard relocs on undefined weak syms with non-default |
| 8393 | visibility. */ |
| 8394 | if (eh->relocs_copied != NULL |
| 8395 | && h->root.type == bfd_link_hash_undefweak) |
| 8396 | { |
| 8397 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
| 8398 | eh->relocs_copied = NULL; |
| 8399 | |
| 8400 | /* Make sure undefined weak symbols are output as a dynamic |
| 8401 | symbol in PIEs. */ |
| 8402 | else if (h->dynindx == -1 |
| 8403 | && !h->forced_local) |
| 8404 | { |
| 8405 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 8406 | return FALSE; |
| 8407 | } |
| 8408 | } |
| 8409 | |
| 8410 | else if (htab->root.is_relocatable_executable && h->dynindx == -1 |
| 8411 | && h->root.type == bfd_link_hash_new) |
| 8412 | { |
| 8413 | /* Output absolute symbols so that we can create relocations |
| 8414 | against them. For normal symbols we output a relocation |
| 8415 | against the section that contains them. */ |
| 8416 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 8417 | return FALSE; |
| 8418 | } |
| 8419 | |
| 8420 | } |
| 8421 | else |
| 8422 | { |
| 8423 | /* For the non-shared case, discard space for relocs against |
| 8424 | symbols which turn out to need copy relocs or are not |
| 8425 | dynamic. */ |
| 8426 | |
| 8427 | if (!h->non_got_ref |
| 8428 | && ((h->def_dynamic |
| 8429 | && !h->def_regular) |
| 8430 | || (htab->root.dynamic_sections_created |
| 8431 | && (h->root.type == bfd_link_hash_undefweak |
| 8432 | || h->root.type == bfd_link_hash_undefined)))) |
| 8433 | { |
| 8434 | /* Make sure this symbol is output as a dynamic symbol. |
| 8435 | Undefined weak syms won't yet be marked as dynamic. */ |
| 8436 | if (h->dynindx == -1 |
| 8437 | && !h->forced_local) |
| 8438 | { |
| 8439 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 8440 | return FALSE; |
| 8441 | } |
| 8442 | |
| 8443 | /* If that succeeded, we know we'll be keeping all the |
| 8444 | relocs. */ |
| 8445 | if (h->dynindx != -1) |
| 8446 | goto keep; |
| 8447 | } |
| 8448 | |
| 8449 | eh->relocs_copied = NULL; |
| 8450 | |
| 8451 | keep: ; |
| 8452 | } |
| 8453 | |
| 8454 | /* Finally, allocate space. */ |
| 8455 | for (p = eh->relocs_copied; p != NULL; p = p->next) |
| 8456 | { |
| 8457 | asection *sreloc = elf_section_data (p->section)->sreloc; |
| 8458 | sreloc->size += p->count * RELOC_SIZE (htab); |
| 8459 | } |
| 8460 | |
| 8461 | return TRUE; |
| 8462 | } |
| 8463 | |
| 8464 | /* Find any dynamic relocs that apply to read-only sections. */ |
| 8465 | |
| 8466 | static bfd_boolean |
| 8467 | elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf) |
| 8468 | { |
| 8469 | struct elf32_arm_link_hash_entry *eh; |
| 8470 | struct elf32_arm_relocs_copied *p; |
| 8471 | |
| 8472 | if (h->root.type == bfd_link_hash_warning) |
| 8473 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 8474 | |
| 8475 | eh = (struct elf32_arm_link_hash_entry *) h; |
| 8476 | for (p = eh->relocs_copied; p != NULL; p = p->next) |
| 8477 | { |
| 8478 | asection *s = p->section; |
| 8479 | |
| 8480 | if (s != NULL && (s->flags & SEC_READONLY) != 0) |
| 8481 | { |
| 8482 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
| 8483 | |
| 8484 | info->flags |= DF_TEXTREL; |
| 8485 | |
| 8486 | /* Not an error, just cut short the traversal. */ |
| 8487 | return FALSE; |
| 8488 | } |
| 8489 | } |
| 8490 | return TRUE; |
| 8491 | } |
| 8492 | |
| 8493 | void |
| 8494 | bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *info, |
| 8495 | int byteswap_code) |
| 8496 | { |
| 8497 | struct elf32_arm_link_hash_table *globals; |
| 8498 | |
| 8499 | globals = elf32_arm_hash_table (info); |
| 8500 | globals->byteswap_code = byteswap_code; |
| 8501 | } |
| 8502 | |
| 8503 | /* Set the sizes of the dynamic sections. */ |
| 8504 | |
| 8505 | static bfd_boolean |
| 8506 | elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, |
| 8507 | struct bfd_link_info * info) |
| 8508 | { |
| 8509 | bfd * dynobj; |
| 8510 | asection * s; |
| 8511 | bfd_boolean plt; |
| 8512 | bfd_boolean relocs; |
| 8513 | bfd *ibfd; |
| 8514 | struct elf32_arm_link_hash_table *htab; |
| 8515 | |
| 8516 | htab = elf32_arm_hash_table (info); |
| 8517 | dynobj = elf_hash_table (info)->dynobj; |
| 8518 | BFD_ASSERT (dynobj != NULL); |
| 8519 | check_use_blx (htab); |
| 8520 | |
| 8521 | if (elf_hash_table (info)->dynamic_sections_created) |
| 8522 | { |
| 8523 | /* Set the contents of the .interp section to the interpreter. */ |
| 8524 | if (info->executable) |
| 8525 | { |
| 8526 | s = bfd_get_section_by_name (dynobj, ".interp"); |
| 8527 | BFD_ASSERT (s != NULL); |
| 8528 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 8529 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| 8530 | } |
| 8531 | } |
| 8532 | |
| 8533 | /* Set up .got offsets for local syms, and space for local dynamic |
| 8534 | relocs. */ |
| 8535 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 8536 | { |
| 8537 | bfd_signed_vma *local_got; |
| 8538 | bfd_signed_vma *end_local_got; |
| 8539 | char *local_tls_type; |
| 8540 | bfd_size_type locsymcount; |
| 8541 | Elf_Internal_Shdr *symtab_hdr; |
| 8542 | asection *srel; |
| 8543 | |
| 8544 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
| 8545 | continue; |
| 8546 | |
| 8547 | for (s = ibfd->sections; s != NULL; s = s->next) |
| 8548 | { |
| 8549 | struct elf32_arm_relocs_copied *p; |
| 8550 | |
| 8551 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
| 8552 | { |
| 8553 | if (!bfd_is_abs_section (p->section) |
| 8554 | && bfd_is_abs_section (p->section->output_section)) |
| 8555 | { |
| 8556 | /* Input section has been discarded, either because |
| 8557 | it is a copy of a linkonce section or due to |
| 8558 | linker script /DISCARD/, so we'll be discarding |
| 8559 | the relocs too. */ |
| 8560 | } |
| 8561 | else if (p->count != 0) |
| 8562 | { |
| 8563 | srel = elf_section_data (p->section)->sreloc; |
| 8564 | srel->size += p->count * RELOC_SIZE (htab); |
| 8565 | if ((p->section->output_section->flags & SEC_READONLY) != 0) |
| 8566 | info->flags |= DF_TEXTREL; |
| 8567 | } |
| 8568 | } |
| 8569 | } |
| 8570 | |
| 8571 | local_got = elf_local_got_refcounts (ibfd); |
| 8572 | if (!local_got) |
| 8573 | continue; |
| 8574 | |
| 8575 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
| 8576 | locsymcount = symtab_hdr->sh_info; |
| 8577 | end_local_got = local_got + locsymcount; |
| 8578 | local_tls_type = elf32_arm_local_got_tls_type (ibfd); |
| 8579 | s = htab->sgot; |
| 8580 | srel = htab->srelgot; |
| 8581 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
| 8582 | { |
| 8583 | if (*local_got > 0) |
| 8584 | { |
| 8585 | *local_got = s->size; |
| 8586 | if (*local_tls_type & GOT_TLS_GD) |
| 8587 | /* TLS_GD relocs need an 8-byte structure in the GOT. */ |
| 8588 | s->size += 8; |
| 8589 | if (*local_tls_type & GOT_TLS_IE) |
| 8590 | s->size += 4; |
| 8591 | if (*local_tls_type == GOT_NORMAL) |
| 8592 | s->size += 4; |
| 8593 | |
| 8594 | if (info->shared || *local_tls_type == GOT_TLS_GD) |
| 8595 | srel->size += RELOC_SIZE (htab); |
| 8596 | } |
| 8597 | else |
| 8598 | *local_got = (bfd_vma) -1; |
| 8599 | } |
| 8600 | } |
| 8601 | |
| 8602 | if (htab->tls_ldm_got.refcount > 0) |
| 8603 | { |
| 8604 | /* Allocate two GOT entries and one dynamic relocation (if necessary) |
| 8605 | for R_ARM_TLS_LDM32 relocations. */ |
| 8606 | htab->tls_ldm_got.offset = htab->sgot->size; |
| 8607 | htab->sgot->size += 8; |
| 8608 | if (info->shared) |
| 8609 | htab->srelgot->size += RELOC_SIZE (htab); |
| 8610 | } |
| 8611 | else |
| 8612 | htab->tls_ldm_got.offset = -1; |
| 8613 | |
| 8614 | /* Allocate global sym .plt and .got entries, and space for global |
| 8615 | sym dynamic relocs. */ |
| 8616 | elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info); |
| 8617 | |
| 8618 | /* Here we rummage through the found bfds to collect glue information. */ |
| 8619 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 8620 | { |
| 8621 | /* Initialise mapping tables for code/data. */ |
| 8622 | bfd_elf32_arm_init_maps (ibfd); |
| 8623 | |
| 8624 | if (!bfd_elf32_arm_process_before_allocation (ibfd, info) |
| 8625 | || !bfd_elf32_arm_vfp11_erratum_scan (ibfd, info)) |
| 8626 | /* xgettext:c-format */ |
| 8627 | _bfd_error_handler (_("Errors encountered processing file %s"), |
| 8628 | ibfd->filename); |
| 8629 | } |
| 8630 | |
| 8631 | /* The check_relocs and adjust_dynamic_symbol entry points have |
| 8632 | determined the sizes of the various dynamic sections. Allocate |
| 8633 | memory for them. */ |
| 8634 | plt = FALSE; |
| 8635 | relocs = FALSE; |
| 8636 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 8637 | { |
| 8638 | const char * name; |
| 8639 | |
| 8640 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
| 8641 | continue; |
| 8642 | |
| 8643 | /* It's OK to base decisions on the section name, because none |
| 8644 | of the dynobj section names depend upon the input files. */ |
| 8645 | name = bfd_get_section_name (dynobj, s); |
| 8646 | |
| 8647 | if (strcmp (name, ".plt") == 0) |
| 8648 | { |
| 8649 | /* Remember whether there is a PLT. */ |
| 8650 | plt = s->size != 0; |
| 8651 | } |
| 8652 | else if (CONST_STRNEQ (name, ".rel")) |
| 8653 | { |
| 8654 | if (s->size != 0) |
| 8655 | { |
| 8656 | /* Remember whether there are any reloc sections other |
| 8657 | than .rel(a).plt and .rela.plt.unloaded. */ |
| 8658 | if (s != htab->srelplt && s != htab->srelplt2) |
| 8659 | relocs = TRUE; |
| 8660 | |
| 8661 | /* We use the reloc_count field as a counter if we need |
| 8662 | to copy relocs into the output file. */ |
| 8663 | s->reloc_count = 0; |
| 8664 | } |
| 8665 | } |
| 8666 | else if (! CONST_STRNEQ (name, ".got") |
| 8667 | && strcmp (name, ".dynbss") != 0) |
| 8668 | { |
| 8669 | /* It's not one of our sections, so don't allocate space. */ |
| 8670 | continue; |
| 8671 | } |
| 8672 | |
| 8673 | if (s->size == 0) |
| 8674 | { |
| 8675 | /* If we don't need this section, strip it from the |
| 8676 | output file. This is mostly to handle .rel(a).bss and |
| 8677 | .rel(a).plt. We must create both sections in |
| 8678 | create_dynamic_sections, because they must be created |
| 8679 | before the linker maps input sections to output |
| 8680 | sections. The linker does that before |
| 8681 | adjust_dynamic_symbol is called, and it is that |
| 8682 | function which decides whether anything needs to go |
| 8683 | into these sections. */ |
| 8684 | s->flags |= SEC_EXCLUDE; |
| 8685 | continue; |
| 8686 | } |
| 8687 | |
| 8688 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
| 8689 | continue; |
| 8690 | |
| 8691 | /* Allocate memory for the section contents. */ |
| 8692 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
| 8693 | if (s->contents == NULL) |
| 8694 | return FALSE; |
| 8695 | } |
| 8696 | |
| 8697 | if (elf_hash_table (info)->dynamic_sections_created) |
| 8698 | { |
| 8699 | /* Add some entries to the .dynamic section. We fill in the |
| 8700 | values later, in elf32_arm_finish_dynamic_sections, but we |
| 8701 | must add the entries now so that we get the correct size for |
| 8702 | the .dynamic section. The DT_DEBUG entry is filled in by the |
| 8703 | dynamic linker and used by the debugger. */ |
| 8704 | #define add_dynamic_entry(TAG, VAL) \ |
| 8705 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
| 8706 | |
| 8707 | if (info->executable) |
| 8708 | { |
| 8709 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
| 8710 | return FALSE; |
| 8711 | } |
| 8712 | |
| 8713 | if (plt) |
| 8714 | { |
| 8715 | if ( !add_dynamic_entry (DT_PLTGOT, 0) |
| 8716 | || !add_dynamic_entry (DT_PLTRELSZ, 0) |
| 8717 | || !add_dynamic_entry (DT_PLTREL, |
| 8718 | htab->use_rel ? DT_REL : DT_RELA) |
| 8719 | || !add_dynamic_entry (DT_JMPREL, 0)) |
| 8720 | return FALSE; |
| 8721 | } |
| 8722 | |
| 8723 | if (relocs) |
| 8724 | { |
| 8725 | if (htab->use_rel) |
| 8726 | { |
| 8727 | if (!add_dynamic_entry (DT_REL, 0) |
| 8728 | || !add_dynamic_entry (DT_RELSZ, 0) |
| 8729 | || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab))) |
| 8730 | return FALSE; |
| 8731 | } |
| 8732 | else |
| 8733 | { |
| 8734 | if (!add_dynamic_entry (DT_RELA, 0) |
| 8735 | || !add_dynamic_entry (DT_RELASZ, 0) |
| 8736 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) |
| 8737 | return FALSE; |
| 8738 | } |
| 8739 | } |
| 8740 | |
| 8741 | /* If any dynamic relocs apply to a read-only section, |
| 8742 | then we need a DT_TEXTREL entry. */ |
| 8743 | if ((info->flags & DF_TEXTREL) == 0) |
| 8744 | elf_link_hash_traverse (&htab->root, elf32_arm_readonly_dynrelocs, |
| 8745 | (PTR) info); |
| 8746 | |
| 8747 | if ((info->flags & DF_TEXTREL) != 0) |
| 8748 | { |
| 8749 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
| 8750 | return FALSE; |
| 8751 | } |
| 8752 | } |
| 8753 | #undef add_dynamic_entry |
| 8754 | |
| 8755 | return TRUE; |
| 8756 | } |
| 8757 | |
| 8758 | /* Finish up dynamic symbol handling. We set the contents of various |
| 8759 | dynamic sections here. */ |
| 8760 | |
| 8761 | static bfd_boolean |
| 8762 | elf32_arm_finish_dynamic_symbol (bfd * output_bfd, struct bfd_link_info * info, |
| 8763 | struct elf_link_hash_entry * h, Elf_Internal_Sym * sym) |
| 8764 | { |
| 8765 | bfd * dynobj; |
| 8766 | struct elf32_arm_link_hash_table *htab; |
| 8767 | struct elf32_arm_link_hash_entry *eh; |
| 8768 | |
| 8769 | dynobj = elf_hash_table (info)->dynobj; |
| 8770 | htab = elf32_arm_hash_table (info); |
| 8771 | eh = (struct elf32_arm_link_hash_entry *) h; |
| 8772 | |
| 8773 | if (h->plt.offset != (bfd_vma) -1) |
| 8774 | { |
| 8775 | asection * splt; |
| 8776 | asection * srel; |
| 8777 | bfd_byte *loc; |
| 8778 | bfd_vma plt_index; |
| 8779 | Elf_Internal_Rela rel; |
| 8780 | |
| 8781 | /* This symbol has an entry in the procedure linkage table. Set |
| 8782 | it up. */ |
| 8783 | |
| 8784 | BFD_ASSERT (h->dynindx != -1); |
| 8785 | |
| 8786 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 8787 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".plt")); |
| 8788 | BFD_ASSERT (splt != NULL && srel != NULL); |
| 8789 | |
| 8790 | /* Fill in the entry in the procedure linkage table. */ |
| 8791 | if (htab->symbian_p) |
| 8792 | { |
| 8793 | put_arm_insn (htab, output_bfd, |
| 8794 | elf32_arm_symbian_plt_entry[0], |
| 8795 | splt->contents + h->plt.offset); |
| 8796 | bfd_put_32 (output_bfd, |
| 8797 | elf32_arm_symbian_plt_entry[1], |
| 8798 | splt->contents + h->plt.offset + 4); |
| 8799 | |
| 8800 | /* Fill in the entry in the .rel.plt section. */ |
| 8801 | rel.r_offset = (splt->output_section->vma |
| 8802 | + splt->output_offset |
| 8803 | + h->plt.offset + 4); |
| 8804 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); |
| 8805 | |
| 8806 | /* Get the index in the procedure linkage table which |
| 8807 | corresponds to this symbol. This is the index of this symbol |
| 8808 | in all the symbols for which we are making plt entries. The |
| 8809 | first entry in the procedure linkage table is reserved. */ |
| 8810 | plt_index = ((h->plt.offset - htab->plt_header_size) |
| 8811 | / htab->plt_entry_size); |
| 8812 | } |
| 8813 | else |
| 8814 | { |
| 8815 | bfd_vma got_offset, got_address, plt_address; |
| 8816 | bfd_vma got_displacement; |
| 8817 | asection * sgot; |
| 8818 | bfd_byte * ptr; |
| 8819 | |
| 8820 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); |
| 8821 | BFD_ASSERT (sgot != NULL); |
| 8822 | |
| 8823 | /* Get the offset into the .got.plt table of the entry that |
| 8824 | corresponds to this function. */ |
| 8825 | got_offset = eh->plt_got_offset; |
| 8826 | |
| 8827 | /* Get the index in the procedure linkage table which |
| 8828 | corresponds to this symbol. This is the index of this symbol |
| 8829 | in all the symbols for which we are making plt entries. The |
| 8830 | first three entries in .got.plt are reserved; after that |
| 8831 | symbols appear in the same order as in .plt. */ |
| 8832 | plt_index = (got_offset - 12) / 4; |
| 8833 | |
| 8834 | /* Calculate the address of the GOT entry. */ |
| 8835 | got_address = (sgot->output_section->vma |
| 8836 | + sgot->output_offset |
| 8837 | + got_offset); |
| 8838 | |
| 8839 | /* ...and the address of the PLT entry. */ |
| 8840 | plt_address = (splt->output_section->vma |
| 8841 | + splt->output_offset |
| 8842 | + h->plt.offset); |
| 8843 | |
| 8844 | ptr = htab->splt->contents + h->plt.offset; |
| 8845 | if (htab->vxworks_p && info->shared) |
| 8846 | { |
| 8847 | unsigned int i; |
| 8848 | bfd_vma val; |
| 8849 | |
| 8850 | for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4) |
| 8851 | { |
| 8852 | val = elf32_arm_vxworks_shared_plt_entry[i]; |
| 8853 | if (i == 2) |
| 8854 | val |= got_address - sgot->output_section->vma; |
| 8855 | if (i == 5) |
| 8856 | val |= plt_index * RELOC_SIZE (htab); |
| 8857 | if (i == 2 || i == 5) |
| 8858 | bfd_put_32 (output_bfd, val, ptr); |
| 8859 | else |
| 8860 | put_arm_insn (htab, output_bfd, val, ptr); |
| 8861 | } |
| 8862 | } |
| 8863 | else if (htab->vxworks_p) |
| 8864 | { |
| 8865 | unsigned int i; |
| 8866 | bfd_vma val; |
| 8867 | |
| 8868 | for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4) |
| 8869 | { |
| 8870 | val = elf32_arm_vxworks_exec_plt_entry[i]; |
| 8871 | if (i == 2) |
| 8872 | val |= got_address; |
| 8873 | if (i == 4) |
| 8874 | val |= 0xffffff & -((h->plt.offset + i * 4 + 8) >> 2); |
| 8875 | if (i == 5) |
| 8876 | val |= plt_index * RELOC_SIZE (htab); |
| 8877 | if (i == 2 || i == 5) |
| 8878 | bfd_put_32 (output_bfd, val, ptr); |
| 8879 | else |
| 8880 | put_arm_insn (htab, output_bfd, val, ptr); |
| 8881 | } |
| 8882 | |
| 8883 | loc = (htab->srelplt2->contents |
| 8884 | + (plt_index * 2 + 1) * RELOC_SIZE (htab)); |
| 8885 | |
| 8886 | /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation |
| 8887 | referencing the GOT for this PLT entry. */ |
| 8888 | rel.r_offset = plt_address + 8; |
| 8889 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); |
| 8890 | rel.r_addend = got_offset; |
| 8891 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); |
| 8892 | loc += RELOC_SIZE (htab); |
| 8893 | |
| 8894 | /* Create the R_ARM_ABS32 relocation referencing the |
| 8895 | beginning of the PLT for this GOT entry. */ |
| 8896 | rel.r_offset = got_address; |
| 8897 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); |
| 8898 | rel.r_addend = 0; |
| 8899 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); |
| 8900 | } |
| 8901 | else |
| 8902 | { |
| 8903 | /* Calculate the displacement between the PLT slot and the |
| 8904 | entry in the GOT. The eight-byte offset accounts for the |
| 8905 | value produced by adding to pc in the first instruction |
| 8906 | of the PLT stub. */ |
| 8907 | got_displacement = got_address - (plt_address + 8); |
| 8908 | |
| 8909 | BFD_ASSERT ((got_displacement & 0xf0000000) == 0); |
| 8910 | |
| 8911 | if (!htab->use_blx && eh->plt_thumb_refcount > 0) |
| 8912 | { |
| 8913 | put_thumb_insn (htab, output_bfd, |
| 8914 | elf32_arm_plt_thumb_stub[0], ptr - 4); |
| 8915 | put_thumb_insn (htab, output_bfd, |
| 8916 | elf32_arm_plt_thumb_stub[1], ptr - 2); |
| 8917 | } |
| 8918 | |
| 8919 | put_arm_insn (htab, output_bfd, |
| 8920 | elf32_arm_plt_entry[0] |
| 8921 | | ((got_displacement & 0x0ff00000) >> 20), |
| 8922 | ptr + 0); |
| 8923 | put_arm_insn (htab, output_bfd, |
| 8924 | elf32_arm_plt_entry[1] |
| 8925 | | ((got_displacement & 0x000ff000) >> 12), |
| 8926 | ptr+ 4); |
| 8927 | put_arm_insn (htab, output_bfd, |
| 8928 | elf32_arm_plt_entry[2] |
| 8929 | | (got_displacement & 0x00000fff), |
| 8930 | ptr + 8); |
| 8931 | #ifdef FOUR_WORD_PLT |
| 8932 | bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], ptr + 12); |
| 8933 | #endif |
| 8934 | } |
| 8935 | |
| 8936 | /* Fill in the entry in the global offset table. */ |
| 8937 | bfd_put_32 (output_bfd, |
| 8938 | (splt->output_section->vma |
| 8939 | + splt->output_offset), |
| 8940 | sgot->contents + got_offset); |
| 8941 | |
| 8942 | /* Fill in the entry in the .rel(a).plt section. */ |
| 8943 | rel.r_addend = 0; |
| 8944 | rel.r_offset = got_address; |
| 8945 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT); |
| 8946 | } |
| 8947 | |
| 8948 | loc = srel->contents + plt_index * RELOC_SIZE (htab); |
| 8949 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); |
| 8950 | |
| 8951 | if (!h->def_regular) |
| 8952 | { |
| 8953 | /* Mark the symbol as undefined, rather than as defined in |
| 8954 | the .plt section. Leave the value alone. */ |
| 8955 | sym->st_shndx = SHN_UNDEF; |
| 8956 | /* If the symbol is weak, we do need to clear the value. |
| 8957 | Otherwise, the PLT entry would provide a definition for |
| 8958 | the symbol even if the symbol wasn't defined anywhere, |
| 8959 | and so the symbol would never be NULL. */ |
| 8960 | if (!h->ref_regular_nonweak) |
| 8961 | sym->st_value = 0; |
| 8962 | } |
| 8963 | } |
| 8964 | |
| 8965 | if (h->got.offset != (bfd_vma) -1 |
| 8966 | && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0 |
| 8967 | && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0) |
| 8968 | { |
| 8969 | asection * sgot; |
| 8970 | asection * srel; |
| 8971 | Elf_Internal_Rela rel; |
| 8972 | bfd_byte *loc; |
| 8973 | bfd_vma offset; |
| 8974 | |
| 8975 | /* This symbol has an entry in the global offset table. Set it |
| 8976 | up. */ |
| 8977 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 8978 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".got")); |
| 8979 | BFD_ASSERT (sgot != NULL && srel != NULL); |
| 8980 | |
| 8981 | offset = (h->got.offset & ~(bfd_vma) 1); |
| 8982 | rel.r_addend = 0; |
| 8983 | rel.r_offset = (sgot->output_section->vma |
| 8984 | + sgot->output_offset |
| 8985 | + offset); |
| 8986 | |
| 8987 | /* If this is a static link, or it is a -Bsymbolic link and the |
| 8988 | symbol is defined locally or was forced to be local because |
| 8989 | of a version file, we just want to emit a RELATIVE reloc. |
| 8990 | The entry in the global offset table will already have been |
| 8991 | initialized in the relocate_section function. */ |
| 8992 | if (info->shared |
| 8993 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
| 8994 | { |
| 8995 | BFD_ASSERT((h->got.offset & 1) != 0); |
| 8996 | rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); |
| 8997 | if (!htab->use_rel) |
| 8998 | { |
| 8999 | rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset); |
| 9000 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset); |
| 9001 | } |
| 9002 | } |
| 9003 | else |
| 9004 | { |
| 9005 | BFD_ASSERT((h->got.offset & 1) == 0); |
| 9006 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset); |
| 9007 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); |
| 9008 | } |
| 9009 | |
| 9010 | loc = srel->contents + srel->reloc_count++ * RELOC_SIZE (htab); |
| 9011 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); |
| 9012 | } |
| 9013 | |
| 9014 | if (h->needs_copy) |
| 9015 | { |
| 9016 | asection * s; |
| 9017 | Elf_Internal_Rela rel; |
| 9018 | bfd_byte *loc; |
| 9019 | |
| 9020 | /* This symbol needs a copy reloc. Set it up. */ |
| 9021 | BFD_ASSERT (h->dynindx != -1 |
| 9022 | && (h->root.type == bfd_link_hash_defined |
| 9023 | || h->root.type == bfd_link_hash_defweak)); |
| 9024 | |
| 9025 | s = bfd_get_section_by_name (h->root.u.def.section->owner, |
| 9026 | RELOC_SECTION (htab, ".bss")); |
| 9027 | BFD_ASSERT (s != NULL); |
| 9028 | |
| 9029 | rel.r_addend = 0; |
| 9030 | rel.r_offset = (h->root.u.def.value |
| 9031 | + h->root.u.def.section->output_section->vma |
| 9032 | + h->root.u.def.section->output_offset); |
| 9033 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY); |
| 9034 | loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab); |
| 9035 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); |
| 9036 | } |
| 9037 | |
| 9038 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks, |
| 9039 | the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative |
| 9040 | to the ".got" section. */ |
| 9041 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
| 9042 | || (!htab->vxworks_p && h == htab->root.hgot)) |
| 9043 | sym->st_shndx = SHN_ABS; |
| 9044 | |
| 9045 | return TRUE; |
| 9046 | } |
| 9047 | |
| 9048 | /* Finish up the dynamic sections. */ |
| 9049 | |
| 9050 | static bfd_boolean |
| 9051 | elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info) |
| 9052 | { |
| 9053 | bfd * dynobj; |
| 9054 | asection * sgot; |
| 9055 | asection * sdyn; |
| 9056 | |
| 9057 | dynobj = elf_hash_table (info)->dynobj; |
| 9058 | |
| 9059 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); |
| 9060 | BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL); |
| 9061 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 9062 | |
| 9063 | if (elf_hash_table (info)->dynamic_sections_created) |
| 9064 | { |
| 9065 | asection *splt; |
| 9066 | Elf32_External_Dyn *dyncon, *dynconend; |
| 9067 | struct elf32_arm_link_hash_table *htab; |
| 9068 | |
| 9069 | htab = elf32_arm_hash_table (info); |
| 9070 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 9071 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
| 9072 | |
| 9073 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
| 9074 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
| 9075 | |
| 9076 | for (; dyncon < dynconend; dyncon++) |
| 9077 | { |
| 9078 | Elf_Internal_Dyn dyn; |
| 9079 | const char * name; |
| 9080 | asection * s; |
| 9081 | |
| 9082 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
| 9083 | |
| 9084 | switch (dyn.d_tag) |
| 9085 | { |
| 9086 | unsigned int type; |
| 9087 | |
| 9088 | default: |
| 9089 | break; |
| 9090 | |
| 9091 | case DT_HASH: |
| 9092 | name = ".hash"; |
| 9093 | goto get_vma_if_bpabi; |
| 9094 | case DT_STRTAB: |
| 9095 | name = ".dynstr"; |
| 9096 | goto get_vma_if_bpabi; |
| 9097 | case DT_SYMTAB: |
| 9098 | name = ".dynsym"; |
| 9099 | goto get_vma_if_bpabi; |
| 9100 | case DT_VERSYM: |
| 9101 | name = ".gnu.version"; |
| 9102 | goto get_vma_if_bpabi; |
| 9103 | case DT_VERDEF: |
| 9104 | name = ".gnu.version_d"; |
| 9105 | goto get_vma_if_bpabi; |
| 9106 | case DT_VERNEED: |
| 9107 | name = ".gnu.version_r"; |
| 9108 | goto get_vma_if_bpabi; |
| 9109 | |
| 9110 | case DT_PLTGOT: |
| 9111 | name = ".got"; |
| 9112 | goto get_vma; |
| 9113 | case DT_JMPREL: |
| 9114 | name = RELOC_SECTION (htab, ".plt"); |
| 9115 | get_vma: |
| 9116 | s = bfd_get_section_by_name (output_bfd, name); |
| 9117 | BFD_ASSERT (s != NULL); |
| 9118 | if (!htab->symbian_p) |
| 9119 | dyn.d_un.d_ptr = s->vma; |
| 9120 | else |
| 9121 | /* In the BPABI, tags in the PT_DYNAMIC section point |
| 9122 | at the file offset, not the memory address, for the |
| 9123 | convenience of the post linker. */ |
| 9124 | dyn.d_un.d_ptr = s->filepos; |
| 9125 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 9126 | break; |
| 9127 | |
| 9128 | get_vma_if_bpabi: |
| 9129 | if (htab->symbian_p) |
| 9130 | goto get_vma; |
| 9131 | break; |
| 9132 | |
| 9133 | case DT_PLTRELSZ: |
| 9134 | s = bfd_get_section_by_name (output_bfd, |
| 9135 | RELOC_SECTION (htab, ".plt")); |
| 9136 | BFD_ASSERT (s != NULL); |
| 9137 | dyn.d_un.d_val = s->size; |
| 9138 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 9139 | break; |
| 9140 | |
| 9141 | case DT_RELSZ: |
| 9142 | case DT_RELASZ: |
| 9143 | if (!htab->symbian_p) |
| 9144 | { |
| 9145 | /* My reading of the SVR4 ABI indicates that the |
| 9146 | procedure linkage table relocs (DT_JMPREL) should be |
| 9147 | included in the overall relocs (DT_REL). This is |
| 9148 | what Solaris does. However, UnixWare can not handle |
| 9149 | that case. Therefore, we override the DT_RELSZ entry |
| 9150 | here to make it not include the JMPREL relocs. Since |
| 9151 | the linker script arranges for .rel(a).plt to follow all |
| 9152 | other relocation sections, we don't have to worry |
| 9153 | about changing the DT_REL entry. */ |
| 9154 | s = bfd_get_section_by_name (output_bfd, |
| 9155 | RELOC_SECTION (htab, ".plt")); |
| 9156 | if (s != NULL) |
| 9157 | dyn.d_un.d_val -= s->size; |
| 9158 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 9159 | break; |
| 9160 | } |
| 9161 | /* Fall through */ |
| 9162 | |
| 9163 | case DT_REL: |
| 9164 | case DT_RELA: |
| 9165 | /* In the BPABI, the DT_REL tag must point at the file |
| 9166 | offset, not the VMA, of the first relocation |
| 9167 | section. So, we use code similar to that in |
| 9168 | elflink.c, but do not check for SHF_ALLOC on the |
| 9169 | relcoation section, since relocations sections are |
| 9170 | never allocated under the BPABI. The comments above |
| 9171 | about Unixware notwithstanding, we include all of the |
| 9172 | relocations here. */ |
| 9173 | if (htab->symbian_p) |
| 9174 | { |
| 9175 | unsigned int i; |
| 9176 | type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ) |
| 9177 | ? SHT_REL : SHT_RELA); |
| 9178 | dyn.d_un.d_val = 0; |
| 9179 | for (i = 1; i < elf_numsections (output_bfd); i++) |
| 9180 | { |
| 9181 | Elf_Internal_Shdr *hdr |
| 9182 | = elf_elfsections (output_bfd)[i]; |
| 9183 | if (hdr->sh_type == type) |
| 9184 | { |
| 9185 | if (dyn.d_tag == DT_RELSZ |
| 9186 | || dyn.d_tag == DT_RELASZ) |
| 9187 | dyn.d_un.d_val += hdr->sh_size; |
| 9188 | else if ((ufile_ptr) hdr->sh_offset |
| 9189 | <= dyn.d_un.d_val - 1) |
| 9190 | dyn.d_un.d_val = hdr->sh_offset; |
| 9191 | } |
| 9192 | } |
| 9193 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 9194 | } |
| 9195 | break; |
| 9196 | |
| 9197 | /* Set the bottom bit of DT_INIT/FINI if the |
| 9198 | corresponding function is Thumb. */ |
| 9199 | case DT_INIT: |
| 9200 | name = info->init_function; |
| 9201 | goto get_sym; |
| 9202 | case DT_FINI: |
| 9203 | name = info->fini_function; |
| 9204 | get_sym: |
| 9205 | /* If it wasn't set by elf_bfd_final_link |
| 9206 | then there is nothing to adjust. */ |
| 9207 | if (dyn.d_un.d_val != 0) |
| 9208 | { |
| 9209 | struct elf_link_hash_entry * eh; |
| 9210 | |
| 9211 | eh = elf_link_hash_lookup (elf_hash_table (info), name, |
| 9212 | FALSE, FALSE, TRUE); |
| 9213 | if (eh != (struct elf_link_hash_entry *) NULL |
| 9214 | && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC) |
| 9215 | { |
| 9216 | dyn.d_un.d_val |= 1; |
| 9217 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 9218 | } |
| 9219 | } |
| 9220 | break; |
| 9221 | } |
| 9222 | } |
| 9223 | |
| 9224 | /* Fill in the first entry in the procedure linkage table. */ |
| 9225 | if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size) |
| 9226 | { |
| 9227 | const bfd_vma *plt0_entry; |
| 9228 | bfd_vma got_address, plt_address, got_displacement; |
| 9229 | |
| 9230 | /* Calculate the addresses of the GOT and PLT. */ |
| 9231 | got_address = sgot->output_section->vma + sgot->output_offset; |
| 9232 | plt_address = splt->output_section->vma + splt->output_offset; |
| 9233 | |
| 9234 | if (htab->vxworks_p) |
| 9235 | { |
| 9236 | /* The VxWorks GOT is relocated by the dynamic linker. |
| 9237 | Therefore, we must emit relocations rather than simply |
| 9238 | computing the values now. */ |
| 9239 | Elf_Internal_Rela rel; |
| 9240 | |
| 9241 | plt0_entry = elf32_arm_vxworks_exec_plt0_entry; |
| 9242 | put_arm_insn (htab, output_bfd, plt0_entry[0], |
| 9243 | splt->contents + 0); |
| 9244 | put_arm_insn (htab, output_bfd, plt0_entry[1], |
| 9245 | splt->contents + 4); |
| 9246 | put_arm_insn (htab, output_bfd, plt0_entry[2], |
| 9247 | splt->contents + 8); |
| 9248 | bfd_put_32 (output_bfd, got_address, splt->contents + 12); |
| 9249 | |
| 9250 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */ |
| 9251 | rel.r_offset = plt_address + 12; |
| 9252 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); |
| 9253 | rel.r_addend = 0; |
| 9254 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, |
| 9255 | htab->srelplt2->contents); |
| 9256 | } |
| 9257 | else |
| 9258 | { |
| 9259 | got_displacement = got_address - (plt_address + 16); |
| 9260 | |
| 9261 | plt0_entry = elf32_arm_plt0_entry; |
| 9262 | put_arm_insn (htab, output_bfd, plt0_entry[0], |
| 9263 | splt->contents + 0); |
| 9264 | put_arm_insn (htab, output_bfd, plt0_entry[1], |
| 9265 | splt->contents + 4); |
| 9266 | put_arm_insn (htab, output_bfd, plt0_entry[2], |
| 9267 | splt->contents + 8); |
| 9268 | put_arm_insn (htab, output_bfd, plt0_entry[3], |
| 9269 | splt->contents + 12); |
| 9270 | |
| 9271 | #ifdef FOUR_WORD_PLT |
| 9272 | /* The displacement value goes in the otherwise-unused |
| 9273 | last word of the second entry. */ |
| 9274 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 28); |
| 9275 | #else |
| 9276 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 16); |
| 9277 | #endif |
| 9278 | } |
| 9279 | } |
| 9280 | |
| 9281 | /* UnixWare sets the entsize of .plt to 4, although that doesn't |
| 9282 | really seem like the right value. */ |
| 9283 | if (splt->output_section->owner == output_bfd) |
| 9284 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; |
| 9285 | |
| 9286 | if (htab->vxworks_p && !info->shared && htab->splt->size > 0) |
| 9287 | { |
| 9288 | /* Correct the .rel(a).plt.unloaded relocations. They will have |
| 9289 | incorrect symbol indexes. */ |
| 9290 | int num_plts; |
| 9291 | unsigned char *p; |
| 9292 | |
| 9293 | num_plts = ((htab->splt->size - htab->plt_header_size) |
| 9294 | / htab->plt_entry_size); |
| 9295 | p = htab->srelplt2->contents + RELOC_SIZE (htab); |
| 9296 | |
| 9297 | for (; num_plts; num_plts--) |
| 9298 | { |
| 9299 | Elf_Internal_Rela rel; |
| 9300 | |
| 9301 | SWAP_RELOC_IN (htab) (output_bfd, p, &rel); |
| 9302 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); |
| 9303 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); |
| 9304 | p += RELOC_SIZE (htab); |
| 9305 | |
| 9306 | SWAP_RELOC_IN (htab) (output_bfd, p, &rel); |
| 9307 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); |
| 9308 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); |
| 9309 | p += RELOC_SIZE (htab); |
| 9310 | } |
| 9311 | } |
| 9312 | } |
| 9313 | |
| 9314 | /* Fill in the first three entries in the global offset table. */ |
| 9315 | if (sgot) |
| 9316 | { |
| 9317 | if (sgot->size > 0) |
| 9318 | { |
| 9319 | if (sdyn == NULL) |
| 9320 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); |
| 9321 | else |
| 9322 | bfd_put_32 (output_bfd, |
| 9323 | sdyn->output_section->vma + sdyn->output_offset, |
| 9324 | sgot->contents); |
| 9325 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); |
| 9326 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); |
| 9327 | } |
| 9328 | |
| 9329 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
| 9330 | } |
| 9331 | |
| 9332 | return TRUE; |
| 9333 | } |
| 9334 | |
| 9335 | static void |
| 9336 | elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED) |
| 9337 | { |
| 9338 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ |
| 9339 | struct elf32_arm_link_hash_table *globals; |
| 9340 | |
| 9341 | i_ehdrp = elf_elfheader (abfd); |
| 9342 | |
| 9343 | if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN) |
| 9344 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM; |
| 9345 | else |
| 9346 | i_ehdrp->e_ident[EI_OSABI] = 0; |
| 9347 | i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION; |
| 9348 | |
| 9349 | if (link_info) |
| 9350 | { |
| 9351 | globals = elf32_arm_hash_table (link_info); |
| 9352 | if (globals->byteswap_code) |
| 9353 | i_ehdrp->e_flags |= EF_ARM_BE8; |
| 9354 | } |
| 9355 | } |
| 9356 | |
| 9357 | static enum elf_reloc_type_class |
| 9358 | elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela) |
| 9359 | { |
| 9360 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
| 9361 | { |
| 9362 | case R_ARM_RELATIVE: |
| 9363 | return reloc_class_relative; |
| 9364 | case R_ARM_JUMP_SLOT: |
| 9365 | return reloc_class_plt; |
| 9366 | case R_ARM_COPY: |
| 9367 | return reloc_class_copy; |
| 9368 | default: |
| 9369 | return reloc_class_normal; |
| 9370 | } |
| 9371 | } |
| 9372 | |
| 9373 | /* Set the right machine number for an Arm ELF file. */ |
| 9374 | |
| 9375 | static bfd_boolean |
| 9376 | elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr) |
| 9377 | { |
| 9378 | if (hdr->sh_type == SHT_NOTE) |
| 9379 | *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS; |
| 9380 | |
| 9381 | return TRUE; |
| 9382 | } |
| 9383 | |
| 9384 | static void |
| 9385 | elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) |
| 9386 | { |
| 9387 | bfd_arm_update_notes (abfd, ARM_NOTE_SECTION); |
| 9388 | } |
| 9389 | |
| 9390 | /* Return TRUE if this is an unwinding table entry. */ |
| 9391 | |
| 9392 | static bfd_boolean |
| 9393 | is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name) |
| 9394 | { |
| 9395 | return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind) |
| 9396 | || CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once)); |
| 9397 | } |
| 9398 | |
| 9399 | |
| 9400 | /* Set the type and flags for an ARM section. We do this by |
| 9401 | the section name, which is a hack, but ought to work. */ |
| 9402 | |
| 9403 | static bfd_boolean |
| 9404 | elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec) |
| 9405 | { |
| 9406 | const char * name; |
| 9407 | |
| 9408 | name = bfd_get_section_name (abfd, sec); |
| 9409 | |
| 9410 | if (is_arm_elf_unwind_section_name (abfd, name)) |
| 9411 | { |
| 9412 | hdr->sh_type = SHT_ARM_EXIDX; |
| 9413 | hdr->sh_flags |= SHF_LINK_ORDER; |
| 9414 | } |
| 9415 | return TRUE; |
| 9416 | } |
| 9417 | |
| 9418 | /* Handle an ARM specific section when reading an object file. This is |
| 9419 | called when bfd_section_from_shdr finds a section with an unknown |
| 9420 | type. */ |
| 9421 | |
| 9422 | static bfd_boolean |
| 9423 | elf32_arm_section_from_shdr (bfd *abfd, |
| 9424 | Elf_Internal_Shdr * hdr, |
| 9425 | const char *name, |
| 9426 | int shindex) |
| 9427 | { |
| 9428 | /* There ought to be a place to keep ELF backend specific flags, but |
| 9429 | at the moment there isn't one. We just keep track of the |
| 9430 | sections by their name, instead. Fortunately, the ABI gives |
| 9431 | names for all the ARM specific sections, so we will probably get |
| 9432 | away with this. */ |
| 9433 | switch (hdr->sh_type) |
| 9434 | { |
| 9435 | case SHT_ARM_EXIDX: |
| 9436 | case SHT_ARM_PREEMPTMAP: |
| 9437 | case SHT_ARM_ATTRIBUTES: |
| 9438 | break; |
| 9439 | |
| 9440 | default: |
| 9441 | return FALSE; |
| 9442 | } |
| 9443 | |
| 9444 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
| 9445 | return FALSE; |
| 9446 | |
| 9447 | return TRUE; |
| 9448 | } |
| 9449 | |
| 9450 | /* A structure used to record a list of sections, independently |
| 9451 | of the next and prev fields in the asection structure. */ |
| 9452 | typedef struct section_list |
| 9453 | { |
| 9454 | asection * sec; |
| 9455 | struct section_list * next; |
| 9456 | struct section_list * prev; |
| 9457 | } |
| 9458 | section_list; |
| 9459 | |
| 9460 | /* Unfortunately we need to keep a list of sections for which |
| 9461 | an _arm_elf_section_data structure has been allocated. This |
| 9462 | is because it is possible for functions like elf32_arm_write_section |
| 9463 | to be called on a section which has had an elf_data_structure |
| 9464 | allocated for it (and so the used_by_bfd field is valid) but |
| 9465 | for which the ARM extended version of this structure - the |
| 9466 | _arm_elf_section_data structure - has not been allocated. */ |
| 9467 | static section_list * sections_with_arm_elf_section_data = NULL; |
| 9468 | |
| 9469 | static void |
| 9470 | record_section_with_arm_elf_section_data (asection * sec) |
| 9471 | { |
| 9472 | struct section_list * entry; |
| 9473 | |
| 9474 | entry = bfd_malloc (sizeof (* entry)); |
| 9475 | if (entry == NULL) |
| 9476 | return; |
| 9477 | entry->sec = sec; |
| 9478 | entry->next = sections_with_arm_elf_section_data; |
| 9479 | entry->prev = NULL; |
| 9480 | if (entry->next != NULL) |
| 9481 | entry->next->prev = entry; |
| 9482 | sections_with_arm_elf_section_data = entry; |
| 9483 | } |
| 9484 | |
| 9485 | static struct section_list * |
| 9486 | find_arm_elf_section_entry (asection * sec) |
| 9487 | { |
| 9488 | struct section_list * entry; |
| 9489 | static struct section_list * last_entry = NULL; |
| 9490 | |
| 9491 | /* This is a short cut for the typical case where the sections are added |
| 9492 | to the sections_with_arm_elf_section_data list in forward order and |
| 9493 | then looked up here in backwards order. This makes a real difference |
| 9494 | to the ld-srec/sec64k.exp linker test. */ |
| 9495 | entry = sections_with_arm_elf_section_data; |
| 9496 | if (last_entry != NULL) |
| 9497 | { |
| 9498 | if (last_entry->sec == sec) |
| 9499 | entry = last_entry; |
| 9500 | else if (last_entry->next != NULL |
| 9501 | && last_entry->next->sec == sec) |
| 9502 | entry = last_entry->next; |
| 9503 | } |
| 9504 | |
| 9505 | for (; entry; entry = entry->next) |
| 9506 | if (entry->sec == sec) |
| 9507 | break; |
| 9508 | |
| 9509 | if (entry) |
| 9510 | /* Record the entry prior to this one - it is the entry we are most |
| 9511 | likely to want to locate next time. Also this way if we have been |
| 9512 | called from unrecord_section_with_arm_elf_section_data() we will not |
| 9513 | be caching a pointer that is about to be freed. */ |
| 9514 | last_entry = entry->prev; |
| 9515 | |
| 9516 | return entry; |
| 9517 | } |
| 9518 | |
| 9519 | static _arm_elf_section_data * |
| 9520 | get_arm_elf_section_data (asection * sec) |
| 9521 | { |
| 9522 | struct section_list * entry; |
| 9523 | |
| 9524 | entry = find_arm_elf_section_entry (sec); |
| 9525 | |
| 9526 | if (entry) |
| 9527 | return elf32_arm_section_data (entry->sec); |
| 9528 | else |
| 9529 | return NULL; |
| 9530 | } |
| 9531 | |
| 9532 | static void |
| 9533 | unrecord_section_with_arm_elf_section_data (asection * sec) |
| 9534 | { |
| 9535 | struct section_list * entry; |
| 9536 | |
| 9537 | entry = find_arm_elf_section_entry (sec); |
| 9538 | |
| 9539 | if (entry) |
| 9540 | { |
| 9541 | if (entry->prev != NULL) |
| 9542 | entry->prev->next = entry->next; |
| 9543 | if (entry->next != NULL) |
| 9544 | entry->next->prev = entry->prev; |
| 9545 | if (entry == sections_with_arm_elf_section_data) |
| 9546 | sections_with_arm_elf_section_data = entry->next; |
| 9547 | free (entry); |
| 9548 | } |
| 9549 | } |
| 9550 | |
| 9551 | |
| 9552 | typedef struct |
| 9553 | { |
| 9554 | void *finfo; |
| 9555 | struct bfd_link_info *info; |
| 9556 | asection *sec; |
| 9557 | int sec_shndx; |
| 9558 | bfd_boolean (*func) (void *, const char *, Elf_Internal_Sym *, |
| 9559 | asection *, struct elf_link_hash_entry *); |
| 9560 | } output_arch_syminfo; |
| 9561 | |
| 9562 | enum map_symbol_type |
| 9563 | { |
| 9564 | ARM_MAP_ARM, |
| 9565 | ARM_MAP_THUMB, |
| 9566 | ARM_MAP_DATA |
| 9567 | }; |
| 9568 | |
| 9569 | |
| 9570 | /* Output a single PLT mapping symbol. */ |
| 9571 | |
| 9572 | static bfd_boolean |
| 9573 | elf32_arm_ouput_plt_map_sym (output_arch_syminfo *osi, |
| 9574 | enum map_symbol_type type, |
| 9575 | bfd_vma offset) |
| 9576 | { |
| 9577 | static const char *names[3] = {"$a", "$t", "$d"}; |
| 9578 | struct elf32_arm_link_hash_table *htab; |
| 9579 | Elf_Internal_Sym sym; |
| 9580 | |
| 9581 | htab = elf32_arm_hash_table (osi->info); |
| 9582 | sym.st_value = osi->sec->output_section->vma |
| 9583 | + osi->sec->output_offset |
| 9584 | + offset; |
| 9585 | sym.st_size = 0; |
| 9586 | sym.st_other = 0; |
| 9587 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); |
| 9588 | sym.st_shndx = osi->sec_shndx; |
| 9589 | if (!osi->func (osi->finfo, names[type], &sym, osi->sec, NULL)) |
| 9590 | return FALSE; |
| 9591 | return TRUE; |
| 9592 | } |
| 9593 | |
| 9594 | |
| 9595 | /* Output mapping symbols for PLT entries associated with H. */ |
| 9596 | |
| 9597 | static bfd_boolean |
| 9598 | elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf) |
| 9599 | { |
| 9600 | output_arch_syminfo *osi = (output_arch_syminfo *) inf; |
| 9601 | struct elf32_arm_link_hash_table *htab; |
| 9602 | struct elf32_arm_link_hash_entry *eh; |
| 9603 | bfd_vma addr; |
| 9604 | |
| 9605 | htab = elf32_arm_hash_table (osi->info); |
| 9606 | |
| 9607 | if (h->root.type == bfd_link_hash_indirect) |
| 9608 | return TRUE; |
| 9609 | |
| 9610 | if (h->root.type == bfd_link_hash_warning) |
| 9611 | /* When warning symbols are created, they **replace** the "real" |
| 9612 | entry in the hash table, thus we never get to see the real |
| 9613 | symbol in a hash traversal. So look at it now. */ |
| 9614 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 9615 | |
| 9616 | if (h->plt.offset == (bfd_vma) -1) |
| 9617 | return TRUE; |
| 9618 | |
| 9619 | eh = (struct elf32_arm_link_hash_entry *) h; |
| 9620 | addr = h->plt.offset; |
| 9621 | if (htab->symbian_p) |
| 9622 | { |
| 9623 | if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr)) |
| 9624 | return FALSE; |
| 9625 | if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 4)) |
| 9626 | return FALSE; |
| 9627 | } |
| 9628 | else if (htab->vxworks_p) |
| 9629 | { |
| 9630 | if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr)) |
| 9631 | return FALSE; |
| 9632 | if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 8)) |
| 9633 | return FALSE; |
| 9634 | if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr + 12)) |
| 9635 | return FALSE; |
| 9636 | if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 20)) |
| 9637 | return FALSE; |
| 9638 | } |
| 9639 | else |
| 9640 | { |
| 9641 | bfd_boolean thumb_stub; |
| 9642 | |
| 9643 | thumb_stub = eh->plt_thumb_refcount > 0 && !htab->use_blx; |
| 9644 | if (thumb_stub) |
| 9645 | { |
| 9646 | if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_THUMB, addr - 4)) |
| 9647 | return FALSE; |
| 9648 | } |
| 9649 | #ifdef FOUR_WORD_PLT |
| 9650 | if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr)) |
| 9651 | return FALSE; |
| 9652 | if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 12)) |
| 9653 | return FALSE; |
| 9654 | #else |
| 9655 | /* A three-word PLT with no Thumb thunk contains only Arm code, |
| 9656 | so only need to output a mapping symbol for the first PLT entry and |
| 9657 | entries with thumb thunks. */ |
| 9658 | if (thumb_stub || addr == 20) |
| 9659 | { |
| 9660 | if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr)) |
| 9661 | return FALSE; |
| 9662 | } |
| 9663 | #endif |
| 9664 | } |
| 9665 | |
| 9666 | return TRUE; |
| 9667 | } |
| 9668 | |
| 9669 | |
| 9670 | /* Output mapping symbols for linker generated sections. */ |
| 9671 | |
| 9672 | static bfd_boolean |
| 9673 | elf32_arm_output_arch_local_syms (bfd *output_bfd, |
| 9674 | struct bfd_link_info *info, |
| 9675 | void *finfo, bfd_boolean (*func) (void *, const char *, |
| 9676 | Elf_Internal_Sym *, |
| 9677 | asection *, |
| 9678 | struct elf_link_hash_entry *)) |
| 9679 | { |
| 9680 | output_arch_syminfo osi; |
| 9681 | struct elf32_arm_link_hash_table *htab; |
| 9682 | bfd_vma offset; |
| 9683 | bfd_size_type size; |
| 9684 | |
| 9685 | htab = elf32_arm_hash_table (info); |
| 9686 | check_use_blx(htab); |
| 9687 | |
| 9688 | osi.finfo = finfo; |
| 9689 | osi.info = info; |
| 9690 | osi.func = func; |
| 9691 | |
| 9692 | /* ARM->Thumb glue. */ |
| 9693 | if (htab->arm_glue_size > 0) |
| 9694 | { |
| 9695 | osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner, |
| 9696 | ARM2THUMB_GLUE_SECTION_NAME); |
| 9697 | |
| 9698 | osi.sec_shndx = _bfd_elf_section_from_bfd_section |
| 9699 | (output_bfd, osi.sec->output_section); |
| 9700 | if (info->shared || htab->root.is_relocatable_executable |
| 9701 | || htab->pic_veneer) |
| 9702 | size = ARM2THUMB_PIC_GLUE_SIZE; |
| 9703 | else if (htab->use_blx) |
| 9704 | size = ARM2THUMB_V5_STATIC_GLUE_SIZE; |
| 9705 | else |
| 9706 | size = ARM2THUMB_STATIC_GLUE_SIZE; |
| 9707 | |
| 9708 | for (offset = 0; offset < htab->arm_glue_size; offset += size) |
| 9709 | { |
| 9710 | elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, offset); |
| 9711 | elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, offset + size - 4); |
| 9712 | } |
| 9713 | } |
| 9714 | |
| 9715 | /* Thumb->ARM glue. */ |
| 9716 | if (htab->thumb_glue_size > 0) |
| 9717 | { |
| 9718 | osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner, |
| 9719 | THUMB2ARM_GLUE_SECTION_NAME); |
| 9720 | |
| 9721 | osi.sec_shndx = _bfd_elf_section_from_bfd_section |
| 9722 | (output_bfd, osi.sec->output_section); |
| 9723 | size = THUMB2ARM_GLUE_SIZE; |
| 9724 | |
| 9725 | for (offset = 0; offset < htab->thumb_glue_size; offset += size) |
| 9726 | { |
| 9727 | elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_THUMB, offset); |
| 9728 | elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, offset + 4); |
| 9729 | } |
| 9730 | } |
| 9731 | |
| 9732 | /* Finally, output mapping symbols for the PLT. */ |
| 9733 | if (!htab->splt || htab->splt->size == 0) |
| 9734 | return TRUE; |
| 9735 | |
| 9736 | osi.sec_shndx = _bfd_elf_section_from_bfd_section (output_bfd, |
| 9737 | htab->splt->output_section); |
| 9738 | osi.sec = htab->splt; |
| 9739 | /* Output mapping symbols for the plt header. SymbianOS does not have a |
| 9740 | plt header. */ |
| 9741 | if (htab->vxworks_p) |
| 9742 | { |
| 9743 | /* VxWorks shared libraries have no PLT header. */ |
| 9744 | if (!info->shared) |
| 9745 | { |
| 9746 | if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, 0)) |
| 9747 | return FALSE; |
| 9748 | if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, 12)) |
| 9749 | return FALSE; |
| 9750 | } |
| 9751 | } |
| 9752 | else if (!htab->symbian_p) |
| 9753 | { |
| 9754 | if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, 0)) |
| 9755 | return FALSE; |
| 9756 | #ifndef FOUR_WORD_PLT |
| 9757 | if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, 16)) |
| 9758 | return FALSE; |
| 9759 | #endif |
| 9760 | } |
| 9761 | |
| 9762 | elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, (void *) &osi); |
| 9763 | return TRUE; |
| 9764 | } |
| 9765 | |
| 9766 | /* Allocate target specific section data. */ |
| 9767 | |
| 9768 | static bfd_boolean |
| 9769 | elf32_arm_new_section_hook (bfd *abfd, asection *sec) |
| 9770 | { |
| 9771 | if (!sec->used_by_bfd) |
| 9772 | { |
| 9773 | _arm_elf_section_data *sdata; |
| 9774 | bfd_size_type amt = sizeof (*sdata); |
| 9775 | |
| 9776 | sdata = bfd_zalloc (abfd, amt); |
| 9777 | if (sdata == NULL) |
| 9778 | return FALSE; |
| 9779 | sec->used_by_bfd = sdata; |
| 9780 | } |
| 9781 | |
| 9782 | record_section_with_arm_elf_section_data (sec); |
| 9783 | |
| 9784 | return _bfd_elf_new_section_hook (abfd, sec); |
| 9785 | } |
| 9786 | |
| 9787 | |
| 9788 | /* Used to order a list of mapping symbols by address. */ |
| 9789 | |
| 9790 | static int |
| 9791 | elf32_arm_compare_mapping (const void * a, const void * b) |
| 9792 | { |
| 9793 | return ((const elf32_arm_section_map *) a)->vma |
| 9794 | > ((const elf32_arm_section_map *) b)->vma; |
| 9795 | } |
| 9796 | |
| 9797 | |
| 9798 | /* Do code byteswapping. Return FALSE afterwards so that the section is |
| 9799 | written out as normal. */ |
| 9800 | |
| 9801 | static bfd_boolean |
| 9802 | elf32_arm_write_section (bfd *output_bfd, |
| 9803 | struct bfd_link_info *link_info, asection *sec, |
| 9804 | bfd_byte *contents) |
| 9805 | { |
| 9806 | int mapcount, errcount; |
| 9807 | _arm_elf_section_data *arm_data; |
| 9808 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); |
| 9809 | elf32_arm_section_map *map; |
| 9810 | elf32_vfp11_erratum_list *errnode; |
| 9811 | bfd_vma ptr; |
| 9812 | bfd_vma end; |
| 9813 | bfd_vma offset = sec->output_section->vma + sec->output_offset; |
| 9814 | bfd_byte tmp; |
| 9815 | int i; |
| 9816 | |
| 9817 | /* If this section has not been allocated an _arm_elf_section_data |
| 9818 | structure then we cannot record anything. */ |
| 9819 | arm_data = get_arm_elf_section_data (sec); |
| 9820 | if (arm_data == NULL) |
| 9821 | return FALSE; |
| 9822 | |
| 9823 | mapcount = arm_data->mapcount; |
| 9824 | map = arm_data->map; |
| 9825 | errcount = arm_data->erratumcount; |
| 9826 | |
| 9827 | if (errcount != 0) |
| 9828 | { |
| 9829 | unsigned int endianflip = bfd_big_endian (output_bfd) ? 3 : 0; |
| 9830 | |
| 9831 | for (errnode = arm_data->erratumlist; errnode != 0; |
| 9832 | errnode = errnode->next) |
| 9833 | { |
| 9834 | bfd_vma index = errnode->vma - offset; |
| 9835 | |
| 9836 | switch (errnode->type) |
| 9837 | { |
| 9838 | case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER: |
| 9839 | { |
| 9840 | bfd_vma branch_to_veneer; |
| 9841 | /* Original condition code of instruction, plus bit mask for |
| 9842 | ARM B instruction. */ |
| 9843 | unsigned int insn = (errnode->u.b.vfp_insn & 0xf0000000) |
| 9844 | | 0x0a000000; |
| 9845 | |
| 9846 | /* The instruction is before the label. */ |
| 9847 | index -= 4; |
| 9848 | |
| 9849 | /* Above offset included in -4 below. */ |
| 9850 | branch_to_veneer = errnode->u.b.veneer->vma |
| 9851 | - errnode->vma - 4; |
| 9852 | |
| 9853 | if ((signed) branch_to_veneer < -(1 << 25) |
| 9854 | || (signed) branch_to_veneer >= (1 << 25)) |
| 9855 | (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of " |
| 9856 | "range"), output_bfd); |
| 9857 | |
| 9858 | insn |= (branch_to_veneer >> 2) & 0xffffff; |
| 9859 | contents[endianflip ^ index] = insn & 0xff; |
| 9860 | contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff; |
| 9861 | contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff; |
| 9862 | contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff; |
| 9863 | } |
| 9864 | break; |
| 9865 | |
| 9866 | case VFP11_ERRATUM_ARM_VENEER: |
| 9867 | { |
| 9868 | bfd_vma branch_from_veneer; |
| 9869 | unsigned int insn; |
| 9870 | |
| 9871 | /* Take size of veneer into account. */ |
| 9872 | branch_from_veneer = errnode->u.v.branch->vma |
| 9873 | - errnode->vma - 12; |
| 9874 | |
| 9875 | if ((signed) branch_from_veneer < -(1 << 25) |
| 9876 | || (signed) branch_from_veneer >= (1 << 25)) |
| 9877 | (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of " |
| 9878 | "range"), output_bfd); |
| 9879 | |
| 9880 | /* Original instruction. */ |
| 9881 | insn = errnode->u.v.branch->u.b.vfp_insn; |
| 9882 | contents[endianflip ^ index] = insn & 0xff; |
| 9883 | contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff; |
| 9884 | contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff; |
| 9885 | contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff; |
| 9886 | |
| 9887 | /* Branch back to insn after original insn. */ |
| 9888 | insn = 0xea000000 | ((branch_from_veneer >> 2) & 0xffffff); |
| 9889 | contents[endianflip ^ (index + 4)] = insn & 0xff; |
| 9890 | contents[endianflip ^ (index + 5)] = (insn >> 8) & 0xff; |
| 9891 | contents[endianflip ^ (index + 6)] = (insn >> 16) & 0xff; |
| 9892 | contents[endianflip ^ (index + 7)] = (insn >> 24) & 0xff; |
| 9893 | } |
| 9894 | break; |
| 9895 | |
| 9896 | default: |
| 9897 | abort (); |
| 9898 | } |
| 9899 | } |
| 9900 | } |
| 9901 | |
| 9902 | if (mapcount == 0) |
| 9903 | return FALSE; |
| 9904 | |
| 9905 | if (globals->byteswap_code) |
| 9906 | { |
| 9907 | qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping); |
| 9908 | |
| 9909 | ptr = map[0].vma; |
| 9910 | for (i = 0; i < mapcount; i++) |
| 9911 | { |
| 9912 | if (i == mapcount - 1) |
| 9913 | end = sec->size; |
| 9914 | else |
| 9915 | end = map[i + 1].vma; |
| 9916 | |
| 9917 | switch (map[i].type) |
| 9918 | { |
| 9919 | case 'a': |
| 9920 | /* Byte swap code words. */ |
| 9921 | while (ptr + 3 < end) |
| 9922 | { |
| 9923 | tmp = contents[ptr]; |
| 9924 | contents[ptr] = contents[ptr + 3]; |
| 9925 | contents[ptr + 3] = tmp; |
| 9926 | tmp = contents[ptr + 1]; |
| 9927 | contents[ptr + 1] = contents[ptr + 2]; |
| 9928 | contents[ptr + 2] = tmp; |
| 9929 | ptr += 4; |
| 9930 | } |
| 9931 | break; |
| 9932 | |
| 9933 | case 't': |
| 9934 | /* Byte swap code halfwords. */ |
| 9935 | while (ptr + 1 < end) |
| 9936 | { |
| 9937 | tmp = contents[ptr]; |
| 9938 | contents[ptr] = contents[ptr + 1]; |
| 9939 | contents[ptr + 1] = tmp; |
| 9940 | ptr += 2; |
| 9941 | } |
| 9942 | break; |
| 9943 | |
| 9944 | case 'd': |
| 9945 | /* Leave data alone. */ |
| 9946 | break; |
| 9947 | } |
| 9948 | ptr = end; |
| 9949 | } |
| 9950 | } |
| 9951 | |
| 9952 | free (map); |
| 9953 | arm_data->mapcount = 0; |
| 9954 | arm_data->mapsize = 0; |
| 9955 | arm_data->map = NULL; |
| 9956 | unrecord_section_with_arm_elf_section_data (sec); |
| 9957 | |
| 9958 | return FALSE; |
| 9959 | } |
| 9960 | |
| 9961 | static void |
| 9962 | unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED, |
| 9963 | asection * sec, |
| 9964 | void * ignore ATTRIBUTE_UNUSED) |
| 9965 | { |
| 9966 | unrecord_section_with_arm_elf_section_data (sec); |
| 9967 | } |
| 9968 | |
| 9969 | static bfd_boolean |
| 9970 | elf32_arm_close_and_cleanup (bfd * abfd) |
| 9971 | { |
| 9972 | if (abfd->sections) |
| 9973 | bfd_map_over_sections (abfd, |
| 9974 | unrecord_section_via_map_over_sections, |
| 9975 | NULL); |
| 9976 | |
| 9977 | return _bfd_elf_close_and_cleanup (abfd); |
| 9978 | } |
| 9979 | |
| 9980 | static bfd_boolean |
| 9981 | elf32_arm_bfd_free_cached_info (bfd * abfd) |
| 9982 | { |
| 9983 | if (abfd->sections) |
| 9984 | bfd_map_over_sections (abfd, |
| 9985 | unrecord_section_via_map_over_sections, |
| 9986 | NULL); |
| 9987 | |
| 9988 | return _bfd_free_cached_info (abfd); |
| 9989 | } |
| 9990 | |
| 9991 | /* Display STT_ARM_TFUNC symbols as functions. */ |
| 9992 | |
| 9993 | static void |
| 9994 | elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, |
| 9995 | asymbol *asym) |
| 9996 | { |
| 9997 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; |
| 9998 | |
| 9999 | if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC) |
| 10000 | elfsym->symbol.flags |= BSF_FUNCTION; |
| 10001 | } |
| 10002 | |
| 10003 | |
| 10004 | /* Mangle thumb function symbols as we read them in. */ |
| 10005 | |
| 10006 | static bfd_boolean |
| 10007 | elf32_arm_swap_symbol_in (bfd * abfd, |
| 10008 | const void *psrc, |
| 10009 | const void *pshn, |
| 10010 | Elf_Internal_Sym *dst) |
| 10011 | { |
| 10012 | if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst)) |
| 10013 | return FALSE; |
| 10014 | |
| 10015 | /* New EABI objects mark thumb function symbols by setting the low bit of |
| 10016 | the address. Turn these into STT_ARM_TFUNC. */ |
| 10017 | if (ELF_ST_TYPE (dst->st_info) == STT_FUNC |
| 10018 | && (dst->st_value & 1)) |
| 10019 | { |
| 10020 | dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC); |
| 10021 | dst->st_value &= ~(bfd_vma) 1; |
| 10022 | } |
| 10023 | return TRUE; |
| 10024 | } |
| 10025 | |
| 10026 | |
| 10027 | /* Mangle thumb function symbols as we write them out. */ |
| 10028 | |
| 10029 | static void |
| 10030 | elf32_arm_swap_symbol_out (bfd *abfd, |
| 10031 | const Elf_Internal_Sym *src, |
| 10032 | void *cdst, |
| 10033 | void *shndx) |
| 10034 | { |
| 10035 | Elf_Internal_Sym newsym; |
| 10036 | |
| 10037 | /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit |
| 10038 | of the address set, as per the new EABI. We do this unconditionally |
| 10039 | because objcopy does not set the elf header flags until after |
| 10040 | it writes out the symbol table. */ |
| 10041 | if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC) |
| 10042 | { |
| 10043 | newsym = *src; |
| 10044 | newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC); |
| 10045 | if (newsym.st_shndx != SHN_UNDEF) |
| 10046 | { |
| 10047 | /* Do this only for defined symbols. At link type, the static |
| 10048 | linker will simulate the work of dynamic linker of resolving |
| 10049 | symbols and will carry over the thumbness of found symbols to |
| 10050 | the output symbol table. It's not clear how it happens, but |
| 10051 | the thumbness of undefined symbols can well be different at |
| 10052 | runtime, and writing '1' for them will be confusing for users |
| 10053 | and possibly for dynamic linker itself. |
| 10054 | */ |
| 10055 | newsym.st_value |= 1; |
| 10056 | } |
| 10057 | |
| 10058 | src = &newsym; |
| 10059 | } |
| 10060 | bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx); |
| 10061 | } |
| 10062 | |
| 10063 | /* Add the PT_ARM_EXIDX program header. */ |
| 10064 | |
| 10065 | static bfd_boolean |
| 10066 | elf32_arm_modify_segment_map (bfd *abfd, |
| 10067 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
| 10068 | { |
| 10069 | struct elf_segment_map *m; |
| 10070 | asection *sec; |
| 10071 | |
| 10072 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); |
| 10073 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) |
| 10074 | { |
| 10075 | /* If there is already a PT_ARM_EXIDX header, then we do not |
| 10076 | want to add another one. This situation arises when running |
| 10077 | "strip"; the input binary already has the header. */ |
| 10078 | m = elf_tdata (abfd)->segment_map; |
| 10079 | while (m && m->p_type != PT_ARM_EXIDX) |
| 10080 | m = m->next; |
| 10081 | if (!m) |
| 10082 | { |
| 10083 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); |
| 10084 | if (m == NULL) |
| 10085 | return FALSE; |
| 10086 | m->p_type = PT_ARM_EXIDX; |
| 10087 | m->count = 1; |
| 10088 | m->sections[0] = sec; |
| 10089 | |
| 10090 | m->next = elf_tdata (abfd)->segment_map; |
| 10091 | elf_tdata (abfd)->segment_map = m; |
| 10092 | } |
| 10093 | } |
| 10094 | |
| 10095 | return TRUE; |
| 10096 | } |
| 10097 | |
| 10098 | /* We may add a PT_ARM_EXIDX program header. */ |
| 10099 | |
| 10100 | static int |
| 10101 | elf32_arm_additional_program_headers (bfd *abfd, |
| 10102 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
| 10103 | { |
| 10104 | asection *sec; |
| 10105 | |
| 10106 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); |
| 10107 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) |
| 10108 | return 1; |
| 10109 | else |
| 10110 | return 0; |
| 10111 | } |
| 10112 | |
| 10113 | /* We have two function types: STT_FUNC and STT_ARM_TFUNC. */ |
| 10114 | static bfd_boolean |
| 10115 | elf32_arm_is_function_type (unsigned int type) |
| 10116 | { |
| 10117 | return (type == STT_FUNC) || (type == STT_ARM_TFUNC); |
| 10118 | } |
| 10119 | |
| 10120 | /* We use this to override swap_symbol_in and swap_symbol_out. */ |
| 10121 | const struct elf_size_info elf32_arm_size_info = { |
| 10122 | sizeof (Elf32_External_Ehdr), |
| 10123 | sizeof (Elf32_External_Phdr), |
| 10124 | sizeof (Elf32_External_Shdr), |
| 10125 | sizeof (Elf32_External_Rel), |
| 10126 | sizeof (Elf32_External_Rela), |
| 10127 | sizeof (Elf32_External_Sym), |
| 10128 | sizeof (Elf32_External_Dyn), |
| 10129 | sizeof (Elf_External_Note), |
| 10130 | 4, |
| 10131 | 1, |
| 10132 | 32, 2, |
| 10133 | ELFCLASS32, EV_CURRENT, |
| 10134 | bfd_elf32_write_out_phdrs, |
| 10135 | bfd_elf32_write_shdrs_and_ehdr, |
| 10136 | bfd_elf32_checksum_contents, |
| 10137 | bfd_elf32_write_relocs, |
| 10138 | elf32_arm_swap_symbol_in, |
| 10139 | elf32_arm_swap_symbol_out, |
| 10140 | bfd_elf32_slurp_reloc_table, |
| 10141 | bfd_elf32_slurp_symbol_table, |
| 10142 | bfd_elf32_swap_dyn_in, |
| 10143 | bfd_elf32_swap_dyn_out, |
| 10144 | bfd_elf32_swap_reloc_in, |
| 10145 | bfd_elf32_swap_reloc_out, |
| 10146 | bfd_elf32_swap_reloca_in, |
| 10147 | bfd_elf32_swap_reloca_out |
| 10148 | }; |
| 10149 | |
| 10150 | #define ELF_ARCH bfd_arch_arm |
| 10151 | #define ELF_MACHINE_CODE EM_ARM |
| 10152 | #ifdef __QNXTARGET__ |
| 10153 | #define ELF_MAXPAGESIZE 0x1000 |
| 10154 | #else |
| 10155 | #define ELF_MAXPAGESIZE 0x8000 |
| 10156 | #endif |
| 10157 | #define ELF_MINPAGESIZE 0x1000 |
| 10158 | #define ELF_COMMONPAGESIZE 0x1000 |
| 10159 | |
| 10160 | #define bfd_elf32_mkobject elf32_arm_mkobject |
| 10161 | |
| 10162 | #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data |
| 10163 | #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data |
| 10164 | #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags |
| 10165 | #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data |
| 10166 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create |
| 10167 | #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup |
| 10168 | #define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup |
| 10169 | #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line |
| 10170 | #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info |
| 10171 | #define bfd_elf32_new_section_hook elf32_arm_new_section_hook |
| 10172 | #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol |
| 10173 | #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup |
| 10174 | #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info |
| 10175 | |
| 10176 | #define elf_backend_get_symbol_type elf32_arm_get_symbol_type |
| 10177 | #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook |
| 10178 | #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections |
| 10179 | #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook |
| 10180 | #define elf_backend_check_relocs elf32_arm_check_relocs |
| 10181 | #define elf_backend_relocate_section elf32_arm_relocate_section |
| 10182 | #define elf_backend_write_section elf32_arm_write_section |
| 10183 | #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol |
| 10184 | #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections |
| 10185 | #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol |
| 10186 | #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections |
| 10187 | #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections |
| 10188 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
| 10189 | #define elf_backend_post_process_headers elf32_arm_post_process_headers |
| 10190 | #define elf_backend_reloc_type_class elf32_arm_reloc_type_class |
| 10191 | #define elf_backend_object_p elf32_arm_object_p |
| 10192 | #define elf_backend_section_flags elf32_arm_section_flags |
| 10193 | #define elf_backend_fake_sections elf32_arm_fake_sections |
| 10194 | #define elf_backend_section_from_shdr elf32_arm_section_from_shdr |
| 10195 | #define elf_backend_final_write_processing elf32_arm_final_write_processing |
| 10196 | #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol |
| 10197 | #define elf_backend_symbol_processing elf32_arm_symbol_processing |
| 10198 | #define elf_backend_size_info elf32_arm_size_info |
| 10199 | #define elf_backend_modify_segment_map elf32_arm_modify_segment_map |
| 10200 | #define elf_backend_additional_program_headers \ |
| 10201 | elf32_arm_additional_program_headers |
| 10202 | #define elf_backend_output_arch_local_syms \ |
| 10203 | elf32_arm_output_arch_local_syms |
| 10204 | #define elf_backend_begin_write_processing \ |
| 10205 | elf32_arm_begin_write_processing |
| 10206 | #define elf_backend_is_function_type elf32_arm_is_function_type |
| 10207 | |
| 10208 | #define elf_backend_can_refcount 1 |
| 10209 | #define elf_backend_can_gc_sections 1 |
| 10210 | #define elf_backend_plt_readonly 1 |
| 10211 | #define elf_backend_want_got_plt 1 |
| 10212 | #define elf_backend_want_plt_sym 0 |
| 10213 | #define elf_backend_may_use_rel_p 1 |
| 10214 | #define elf_backend_may_use_rela_p 0 |
| 10215 | #define elf_backend_default_use_rela_p 0 |
| 10216 | |
| 10217 | #define elf_backend_got_header_size 12 |
| 10218 | |
| 10219 | #undef elf_backend_obj_attrs_vendor |
| 10220 | #define elf_backend_obj_attrs_vendor "aeabi" |
| 10221 | #undef elf_backend_obj_attrs_section |
| 10222 | #define elf_backend_obj_attrs_section ".ARM.attributes" |
| 10223 | #undef elf_backend_obj_attrs_arg_type |
| 10224 | #define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type |
| 10225 | #undef elf_backend_obj_attrs_section_type |
| 10226 | #define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES |
| 10227 | |
| 10228 | #include "elf32-target.h" |
| 10229 | |
| 10230 | /* VxWorks Targets */ |
| 10231 | |
| 10232 | #undef TARGET_LITTLE_SYM |
| 10233 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec |
| 10234 | #undef TARGET_LITTLE_NAME |
| 10235 | #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks" |
| 10236 | #undef TARGET_BIG_SYM |
| 10237 | #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec |
| 10238 | #undef TARGET_BIG_NAME |
| 10239 | #define TARGET_BIG_NAME "elf32-bigarm-vxworks" |
| 10240 | |
| 10241 | /* Like elf32_arm_link_hash_table_create -- but overrides |
| 10242 | appropriately for VxWorks. */ |
| 10243 | static struct bfd_link_hash_table * |
| 10244 | elf32_arm_vxworks_link_hash_table_create (bfd *abfd) |
| 10245 | { |
| 10246 | struct bfd_link_hash_table *ret; |
| 10247 | |
| 10248 | ret = elf32_arm_link_hash_table_create (abfd); |
| 10249 | if (ret) |
| 10250 | { |
| 10251 | struct elf32_arm_link_hash_table *htab |
| 10252 | = (struct elf32_arm_link_hash_table *) ret; |
| 10253 | htab->use_rel = 0; |
| 10254 | htab->vxworks_p = 1; |
| 10255 | } |
| 10256 | return ret; |
| 10257 | } |
| 10258 | |
| 10259 | static void |
| 10260 | elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) |
| 10261 | { |
| 10262 | elf32_arm_final_write_processing (abfd, linker); |
| 10263 | elf_vxworks_final_write_processing (abfd, linker); |
| 10264 | } |
| 10265 | |
| 10266 | #undef elf32_bed |
| 10267 | #define elf32_bed elf32_arm_vxworks_bed |
| 10268 | |
| 10269 | #undef bfd_elf32_bfd_link_hash_table_create |
| 10270 | #define bfd_elf32_bfd_link_hash_table_create \ |
| 10271 | elf32_arm_vxworks_link_hash_table_create |
| 10272 | #undef elf_backend_add_symbol_hook |
| 10273 | #define elf_backend_add_symbol_hook \ |
| 10274 | elf_vxworks_add_symbol_hook |
| 10275 | #undef elf_backend_final_write_processing |
| 10276 | #define elf_backend_final_write_processing \ |
| 10277 | elf32_arm_vxworks_final_write_processing |
| 10278 | #undef elf_backend_emit_relocs |
| 10279 | #define elf_backend_emit_relocs \ |
| 10280 | elf_vxworks_emit_relocs |
| 10281 | |
| 10282 | #undef elf_backend_may_use_rel_p |
| 10283 | #define elf_backend_may_use_rel_p 0 |
| 10284 | #undef elf_backend_may_use_rela_p |
| 10285 | #define elf_backend_may_use_rela_p 1 |
| 10286 | #undef elf_backend_default_use_rela_p |
| 10287 | #define elf_backend_default_use_rela_p 1 |
| 10288 | #undef elf_backend_want_plt_sym |
| 10289 | #define elf_backend_want_plt_sym 1 |
| 10290 | #undef ELF_MAXPAGESIZE |
| 10291 | #define ELF_MAXPAGESIZE 0x1000 |
| 10292 | |
| 10293 | #include "elf32-target.h" |
| 10294 | |
| 10295 | |
| 10296 | /* Symbian OS Targets */ |
| 10297 | |
| 10298 | #undef TARGET_LITTLE_SYM |
| 10299 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec |
| 10300 | #undef TARGET_LITTLE_NAME |
| 10301 | #define TARGET_LITTLE_NAME "elf32-littlearm-symbian" |
| 10302 | #undef TARGET_BIG_SYM |
| 10303 | #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec |
| 10304 | #undef TARGET_BIG_NAME |
| 10305 | #define TARGET_BIG_NAME "elf32-bigarm-symbian" |
| 10306 | |
| 10307 | /* Like elf32_arm_link_hash_table_create -- but overrides |
| 10308 | appropriately for Symbian OS. */ |
| 10309 | static struct bfd_link_hash_table * |
| 10310 | elf32_arm_symbian_link_hash_table_create (bfd *abfd) |
| 10311 | { |
| 10312 | struct bfd_link_hash_table *ret; |
| 10313 | |
| 10314 | ret = elf32_arm_link_hash_table_create (abfd); |
| 10315 | if (ret) |
| 10316 | { |
| 10317 | struct elf32_arm_link_hash_table *htab |
| 10318 | = (struct elf32_arm_link_hash_table *)ret; |
| 10319 | /* There is no PLT header for Symbian OS. */ |
| 10320 | htab->plt_header_size = 0; |
| 10321 | /* The PLT entries are each three instructions. */ |
| 10322 | htab->plt_entry_size = 4 * NUM_ELEM (elf32_arm_symbian_plt_entry); |
| 10323 | htab->symbian_p = 1; |
| 10324 | /* Symbian uses armv5t or above, so use_blx is always true. */ |
| 10325 | htab->use_blx = 1; |
| 10326 | htab->root.is_relocatable_executable = 1; |
| 10327 | } |
| 10328 | return ret; |
| 10329 | } |
| 10330 | |
| 10331 | static const struct bfd_elf_special_section |
| 10332 | elf32_arm_symbian_special_sections[] = |
| 10333 | { |
| 10334 | /* In a BPABI executable, the dynamic linking sections do not go in |
| 10335 | the loadable read-only segment. The post-linker may wish to |
| 10336 | refer to these sections, but they are not part of the final |
| 10337 | program image. */ |
| 10338 | { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 }, |
| 10339 | { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 }, |
| 10340 | { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 }, |
| 10341 | { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 }, |
| 10342 | { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 }, |
| 10343 | /* These sections do not need to be writable as the SymbianOS |
| 10344 | postlinker will arrange things so that no dynamic relocation is |
| 10345 | required. */ |
| 10346 | { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC }, |
| 10347 | { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC }, |
| 10348 | { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC }, |
| 10349 | { NULL, 0, 0, 0, 0 } |
| 10350 | }; |
| 10351 | |
| 10352 | static void |
| 10353 | elf32_arm_symbian_begin_write_processing (bfd *abfd, |
| 10354 | struct bfd_link_info *link_info) |
| 10355 | { |
| 10356 | /* BPABI objects are never loaded directly by an OS kernel; they are |
| 10357 | processed by a postlinker first, into an OS-specific format. If |
| 10358 | the D_PAGED bit is set on the file, BFD will align segments on |
| 10359 | page boundaries, so that an OS can directly map the file. With |
| 10360 | BPABI objects, that just results in wasted space. In addition, |
| 10361 | because we clear the D_PAGED bit, map_sections_to_segments will |
| 10362 | recognize that the program headers should not be mapped into any |
| 10363 | loadable segment. */ |
| 10364 | abfd->flags &= ~D_PAGED; |
| 10365 | elf32_arm_begin_write_processing(abfd, link_info); |
| 10366 | } |
| 10367 | |
| 10368 | static bfd_boolean |
| 10369 | elf32_arm_symbian_modify_segment_map (bfd *abfd, |
| 10370 | struct bfd_link_info *info) |
| 10371 | { |
| 10372 | struct elf_segment_map *m; |
| 10373 | asection *dynsec; |
| 10374 | |
| 10375 | /* BPABI shared libraries and executables should have a PT_DYNAMIC |
| 10376 | segment. However, because the .dynamic section is not marked |
| 10377 | with SEC_LOAD, the generic ELF code will not create such a |
| 10378 | segment. */ |
| 10379 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); |
| 10380 | if (dynsec) |
| 10381 | { |
| 10382 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
| 10383 | if (m->p_type == PT_DYNAMIC) |
| 10384 | break; |
| 10385 | |
| 10386 | if (m == NULL) |
| 10387 | { |
| 10388 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); |
| 10389 | m->next = elf_tdata (abfd)->segment_map; |
| 10390 | elf_tdata (abfd)->segment_map = m; |
| 10391 | } |
| 10392 | } |
| 10393 | |
| 10394 | /* Also call the generic arm routine. */ |
| 10395 | return elf32_arm_modify_segment_map (abfd, info); |
| 10396 | } |
| 10397 | |
| 10398 | #undef elf32_bed |
| 10399 | #define elf32_bed elf32_arm_symbian_bed |
| 10400 | |
| 10401 | /* The dynamic sections are not allocated on SymbianOS; the postlinker |
| 10402 | will process them and then discard them. */ |
| 10403 | #undef ELF_DYNAMIC_SEC_FLAGS |
| 10404 | #define ELF_DYNAMIC_SEC_FLAGS \ |
| 10405 | (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED) |
| 10406 | |
| 10407 | #undef bfd_elf32_bfd_link_hash_table_create |
| 10408 | #define bfd_elf32_bfd_link_hash_table_create \ |
| 10409 | elf32_arm_symbian_link_hash_table_create |
| 10410 | #undef elf_backend_add_symbol_hook |
| 10411 | |
| 10412 | #undef elf_backend_special_sections |
| 10413 | #define elf_backend_special_sections elf32_arm_symbian_special_sections |
| 10414 | |
| 10415 | #undef elf_backend_begin_write_processing |
| 10416 | #define elf_backend_begin_write_processing \ |
| 10417 | elf32_arm_symbian_begin_write_processing |
| 10418 | #undef elf_backend_final_write_processing |
| 10419 | #define elf_backend_final_write_processing \ |
| 10420 | elf32_arm_final_write_processing |
| 10421 | #undef elf_backend_emit_relocs |
| 10422 | |
| 10423 | #undef elf_backend_modify_segment_map |
| 10424 | #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map |
| 10425 | |
| 10426 | /* There is no .got section for BPABI objects, and hence no header. */ |
| 10427 | #undef elf_backend_got_header_size |
| 10428 | #define elf_backend_got_header_size 0 |
| 10429 | |
| 10430 | /* Similarly, there is no .got.plt section. */ |
| 10431 | #undef elf_backend_want_got_plt |
| 10432 | #define elf_backend_want_got_plt 0 |
| 10433 | |
| 10434 | #undef elf_backend_may_use_rel_p |
| 10435 | #define elf_backend_may_use_rel_p 1 |
| 10436 | #undef elf_backend_may_use_rela_p |
| 10437 | #define elf_backend_may_use_rela_p 0 |
| 10438 | #undef elf_backend_default_use_rela_p |
| 10439 | #define elf_backend_default_use_rela_p 0 |
| 10440 | #undef elf_backend_want_plt_sym |
| 10441 | #define elf_backend_want_plt_sym 0 |
| 10442 | #undef ELF_MAXPAGESIZE |
| 10443 | #define ELF_MAXPAGESIZE 0x8000 |
| 10444 | |
| 10445 | #include "elf32-target.h" |