| 1 | /* TILE-Gx-specific support for ELF. |
| 2 | Copyright (C) 2011-2014 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of BFD, the Binary File Descriptor library. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 19 | MA 02110-1301, USA. */ |
| 20 | |
| 21 | #include "sysdep.h" |
| 22 | #include "bfd.h" |
| 23 | #include "libbfd.h" |
| 24 | #include "elf-bfd.h" |
| 25 | #include "elf/tilegx.h" |
| 26 | #include "opcode/tilegx.h" |
| 27 | #include "libiberty.h" |
| 28 | #include "elfxx-tilegx.h" |
| 29 | |
| 30 | #define ABI_64_P(abfd) \ |
| 31 | (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64) |
| 32 | |
| 33 | #define TILEGX_ELF_WORD_BYTES(htab) \ |
| 34 | ((htab)->bytes_per_word) |
| 35 | |
| 36 | /* The size of an external RELA relocation. */ |
| 37 | #define TILEGX_ELF_RELA_BYTES(htab) \ |
| 38 | ((htab)->bytes_per_rela) |
| 39 | |
| 40 | /* Both 32-bit and 64-bit tilegx encode this in an identical manner, |
| 41 | so just take advantage of that. */ |
| 42 | #define TILEGX_ELF_R_TYPE(r_info) \ |
| 43 | ((r_info) & 0xFF) |
| 44 | |
| 45 | #define TILEGX_ELF_R_INFO(htab, in_rel, index, type) \ |
| 46 | ((htab)->r_info (in_rel, index, type)) |
| 47 | |
| 48 | #define TILEGX_ELF_R_SYMNDX(htab, r_info) \ |
| 49 | ((htab)->r_symndx(r_info)) |
| 50 | |
| 51 | #define TILEGX_ELF_DTPOFF_RELOC(htab) \ |
| 52 | ((htab)->dtpoff_reloc) |
| 53 | |
| 54 | #define TILEGX_ELF_DTPMOD_RELOC(htab) \ |
| 55 | ((htab)->dtpmod_reloc) |
| 56 | |
| 57 | #define TILEGX_ELF_TPOFF_RELOC(htab) \ |
| 58 | ((htab)->tpoff_reloc) |
| 59 | |
| 60 | #define TILEGX_ELF_PUT_WORD(htab, bfd, val, ptr) \ |
| 61 | ((htab)->put_word (bfd, val, ptr)) |
| 62 | |
| 63 | /* The name of the dynamic interpreter. This is put in the .interp |
| 64 | section. */ |
| 65 | |
| 66 | #define ELF64_DYNAMIC_INTERPRETER "/lib/ld.so.1" |
| 67 | #define ELF32_DYNAMIC_INTERPRETER "/lib32/ld.so.1" |
| 68 | |
| 69 | |
| 70 | static reloc_howto_type tilegx_elf_howto_table [] = |
| 71 | { |
| 72 | /* This reloc does nothing. */ |
| 73 | HOWTO (R_TILEGX_NONE, /* type */ |
| 74 | 0, /* rightshift */ |
| 75 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 76 | 32, /* bitsize */ |
| 77 | FALSE, /* pc_relative */ |
| 78 | 0, /* bitpos */ |
| 79 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 80 | bfd_elf_generic_reloc, /* special_function */ |
| 81 | "R_TILEGX_NONE", /* name */ |
| 82 | FALSE, /* partial_inplace */ |
| 83 | 0, /* src_mask */ |
| 84 | 0, /* dst_mask */ |
| 85 | FALSE), /* pcrel_offset */ |
| 86 | #ifdef BFD64 |
| 87 | /* A 64 bit absolute relocation. */ |
| 88 | HOWTO (R_TILEGX_64, /* type */ |
| 89 | 0, /* rightshift */ |
| 90 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
| 91 | 64, /* bitsize */ |
| 92 | FALSE, /* pc_relative */ |
| 93 | 0, /* bitpos */ |
| 94 | complain_overflow_dont, /* complain_on_overflow */ |
| 95 | bfd_elf_generic_reloc, /* special_function */ |
| 96 | "R_TILEGX_64", /* name */ |
| 97 | FALSE, /* partial_inplace */ |
| 98 | 0, /* src_mask */ |
| 99 | 0xffffffffffffffffULL, /* dst_mask */ |
| 100 | FALSE), /* pcrel_offset */ |
| 101 | #endif |
| 102 | /* A 32 bit absolute relocation. */ |
| 103 | HOWTO (R_TILEGX_32, /* type */ |
| 104 | 0, /* rightshift */ |
| 105 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 106 | 32, /* bitsize */ |
| 107 | FALSE, /* pc_relative */ |
| 108 | 0, /* bitpos */ |
| 109 | complain_overflow_dont, /* complain_on_overflow */ |
| 110 | bfd_elf_generic_reloc, /* special_function */ |
| 111 | "R_TILEGX_32", /* name */ |
| 112 | FALSE, /* partial_inplace */ |
| 113 | 0, /* src_mask */ |
| 114 | 0xffffffff, /* dst_mask */ |
| 115 | FALSE), /* pcrel_offset */ |
| 116 | |
| 117 | /* A 16 bit absolute relocation. */ |
| 118 | HOWTO (R_TILEGX_16, /* type */ |
| 119 | 0, /* rightshift */ |
| 120 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 121 | 16, /* bitsize */ |
| 122 | FALSE, /* pc_relative */ |
| 123 | 0, /* bitpos */ |
| 124 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 125 | bfd_elf_generic_reloc, /* special_function */ |
| 126 | "R_TILEGX_16", /* name */ |
| 127 | FALSE, /* partial_inplace */ |
| 128 | 0, /* src_mask */ |
| 129 | 0xffff, /* dst_mask */ |
| 130 | FALSE), /* pcrel_offset */ |
| 131 | |
| 132 | /* An 8 bit absolute relocation. */ |
| 133 | HOWTO (R_TILEGX_8, /* type */ |
| 134 | 0, /* rightshift */ |
| 135 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 136 | 8, /* bitsize */ |
| 137 | FALSE, /* pc_relative */ |
| 138 | 0, /* bitpos */ |
| 139 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 140 | bfd_elf_generic_reloc, /* special_function */ |
| 141 | "R_TILEGX_8", /* name */ |
| 142 | FALSE, /* partial_inplace */ |
| 143 | 0, /* src_mask */ |
| 144 | 0xff, /* dst_mask */ |
| 145 | FALSE), /* pcrel_offset */ |
| 146 | #ifdef BFD64 |
| 147 | /* A 64 bit pc-relative relocation. */ |
| 148 | HOWTO (R_TILEGX_64_PCREL,/* type */ |
| 149 | 0, /* rightshift */ |
| 150 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
| 151 | 64, /* bitsize */ |
| 152 | TRUE, /* pc_relative */ |
| 153 | 0, /* bitpos */ |
| 154 | complain_overflow_dont, /* complain_on_overflow */ |
| 155 | bfd_elf_generic_reloc, /* special_function */ |
| 156 | "R_TILEGX_32_PCREL", /* name */ |
| 157 | FALSE, /* partial_inplace */ |
| 158 | 0, /* src_mask */ |
| 159 | 0xffffffffffffffffULL, /* dst_mask */ |
| 160 | TRUE), /* pcrel_offset */ |
| 161 | #endif |
| 162 | /* A 32 bit pc-relative relocation. */ |
| 163 | HOWTO (R_TILEGX_32_PCREL,/* type */ |
| 164 | 0, /* rightshift */ |
| 165 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 166 | 32, /* bitsize */ |
| 167 | TRUE, /* pc_relative */ |
| 168 | 0, /* bitpos */ |
| 169 | complain_overflow_dont, /* complain_on_overflow */ |
| 170 | bfd_elf_generic_reloc, /* special_function */ |
| 171 | "R_TILEGX_32_PCREL", /* name */ |
| 172 | FALSE, /* partial_inplace */ |
| 173 | 0, /* src_mask */ |
| 174 | 0xffffffff, /* dst_mask */ |
| 175 | TRUE), /* pcrel_offset */ |
| 176 | |
| 177 | /* A 16 bit pc-relative relocation. */ |
| 178 | HOWTO (R_TILEGX_16_PCREL,/* type */ |
| 179 | 0, /* rightshift */ |
| 180 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 181 | 16, /* bitsize */ |
| 182 | TRUE, /* pc_relative */ |
| 183 | 0, /* bitpos */ |
| 184 | complain_overflow_signed, /* complain_on_overflow */ |
| 185 | bfd_elf_generic_reloc, /* special_function */ |
| 186 | "R_TILEGX_16_PCREL", /* name */ |
| 187 | FALSE, /* partial_inplace */ |
| 188 | 0, /* src_mask */ |
| 189 | 0xffff, /* dst_mask */ |
| 190 | TRUE), /* pcrel_offset */ |
| 191 | |
| 192 | /* An 8 bit pc-relative relocation. */ |
| 193 | HOWTO (R_TILEGX_8_PCREL, /* type */ |
| 194 | 0, /* rightshift */ |
| 195 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 196 | 8, /* bitsize */ |
| 197 | TRUE, /* pc_relative */ |
| 198 | 0, /* bitpos */ |
| 199 | complain_overflow_signed, /* complain_on_overflow */ |
| 200 | bfd_elf_generic_reloc, /* special_function */ |
| 201 | "R_TILEGX_8_PCREL",/* name */ |
| 202 | FALSE, /* partial_inplace */ |
| 203 | 0, /* src_mask */ |
| 204 | 0xff, /* dst_mask */ |
| 205 | TRUE), /* pcrel_offset */ |
| 206 | |
| 207 | /* A 16 bit relocation without overflow. */ |
| 208 | HOWTO (R_TILEGX_HW0, /* type */ |
| 209 | 0, /* rightshift */ |
| 210 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 211 | 16, /* bitsize */ |
| 212 | FALSE, /* pc_relative */ |
| 213 | 0, /* bitpos */ |
| 214 | complain_overflow_dont,/* complain_on_overflow */ |
| 215 | bfd_elf_generic_reloc, /* special_function */ |
| 216 | "R_TILEGX_HW0", /* name */ |
| 217 | FALSE, /* partial_inplace */ |
| 218 | 0, /* src_mask */ |
| 219 | 0xffff, /* dst_mask */ |
| 220 | FALSE), /* pcrel_offset */ |
| 221 | |
| 222 | /* A 16 bit relocation without overflow. */ |
| 223 | HOWTO (R_TILEGX_HW1, /* type */ |
| 224 | 16, /* rightshift */ |
| 225 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 226 | 16, /* bitsize */ |
| 227 | FALSE, /* pc_relative */ |
| 228 | 0, /* bitpos */ |
| 229 | complain_overflow_dont,/* complain_on_overflow */ |
| 230 | bfd_elf_generic_reloc, /* special_function */ |
| 231 | "R_TILEGX_HW1", /* name */ |
| 232 | FALSE, /* partial_inplace */ |
| 233 | 0, /* src_mask */ |
| 234 | 0xffff, /* dst_mask */ |
| 235 | FALSE), /* pcrel_offset */ |
| 236 | |
| 237 | /* A 16 bit relocation without overflow. */ |
| 238 | HOWTO (R_TILEGX_HW2, /* type */ |
| 239 | 32, /* rightshift */ |
| 240 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 241 | 16, /* bitsize */ |
| 242 | FALSE, /* pc_relative */ |
| 243 | 0, /* bitpos */ |
| 244 | complain_overflow_dont,/* complain_on_overflow */ |
| 245 | bfd_elf_generic_reloc, /* special_function */ |
| 246 | "R_TILEGX_HW2", /* name */ |
| 247 | FALSE, /* partial_inplace */ |
| 248 | 0, /* src_mask */ |
| 249 | 0xffff, /* dst_mask */ |
| 250 | FALSE), /* pcrel_offset */ |
| 251 | |
| 252 | /* A 16 bit relocation without overflow. */ |
| 253 | HOWTO (R_TILEGX_HW3, /* type */ |
| 254 | 48, /* rightshift */ |
| 255 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 256 | 16, /* bitsize */ |
| 257 | FALSE, /* pc_relative */ |
| 258 | 0, /* bitpos */ |
| 259 | complain_overflow_dont,/* complain_on_overflow */ |
| 260 | bfd_elf_generic_reloc, /* special_function */ |
| 261 | "R_TILEGX_HW3", /* name */ |
| 262 | FALSE, /* partial_inplace */ |
| 263 | 0, /* src_mask */ |
| 264 | 0xffff, /* dst_mask */ |
| 265 | FALSE), /* pcrel_offset */ |
| 266 | |
| 267 | /* A 16 bit relocation with overflow. */ |
| 268 | HOWTO (R_TILEGX_HW0_LAST, /* type */ |
| 269 | 0, /* rightshift */ |
| 270 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 271 | 16, /* bitsize */ |
| 272 | FALSE, /* pc_relative */ |
| 273 | 0, /* bitpos */ |
| 274 | complain_overflow_signed,/* complain_on_overflow */ |
| 275 | bfd_elf_generic_reloc, /* special_function */ |
| 276 | "R_TILEGX_HW0_LAST", /* name */ |
| 277 | FALSE, /* partial_inplace */ |
| 278 | 0, /* src_mask */ |
| 279 | 0xffff, /* dst_mask */ |
| 280 | FALSE), /* pcrel_offset */ |
| 281 | |
| 282 | /* A 16 bit relocation with overflow. */ |
| 283 | HOWTO (R_TILEGX_HW1_LAST, /* type */ |
| 284 | 16, /* rightshift */ |
| 285 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 286 | 16, /* bitsize */ |
| 287 | FALSE, /* pc_relative */ |
| 288 | 0, /* bitpos */ |
| 289 | complain_overflow_signed,/* complain_on_overflow */ |
| 290 | bfd_elf_generic_reloc, /* special_function */ |
| 291 | "R_TILEGX_HW1_LAST", /* name */ |
| 292 | FALSE, /* partial_inplace */ |
| 293 | 0, /* src_mask */ |
| 294 | 0xffff, /* dst_mask */ |
| 295 | FALSE), /* pcrel_offset */ |
| 296 | |
| 297 | /* A 16 bit relocation with overflow. */ |
| 298 | HOWTO (R_TILEGX_HW2_LAST, /* type */ |
| 299 | 32, /* rightshift */ |
| 300 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 301 | 16, /* bitsize */ |
| 302 | FALSE, /* pc_relative */ |
| 303 | 0, /* bitpos */ |
| 304 | complain_overflow_signed,/* complain_on_overflow */ |
| 305 | bfd_elf_generic_reloc, /* special_function */ |
| 306 | "R_TILEGX_HW2_LAST", /* name */ |
| 307 | FALSE, /* partial_inplace */ |
| 308 | 0, /* src_mask */ |
| 309 | 0xffff, /* dst_mask */ |
| 310 | FALSE), /* pcrel_offset */ |
| 311 | |
| 312 | HOWTO (R_TILEGX_COPY, /* type */ |
| 313 | 0, /* rightshift */ |
| 314 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 315 | 0, /* bitsize */ |
| 316 | FALSE, /* pc_relative */ |
| 317 | 0, /* bitpos */ |
| 318 | complain_overflow_dont, /* complain_on_overflow */ |
| 319 | bfd_elf_generic_reloc, /* special_function */ |
| 320 | "R_TILEGX_COPY", /* name */ |
| 321 | FALSE, /* partial_inplace */ |
| 322 | 0, /* src_mask */ |
| 323 | 0, /* dst_mask */ |
| 324 | TRUE), /* pcrel_offset */ |
| 325 | |
| 326 | HOWTO (R_TILEGX_GLOB_DAT, /* type */ |
| 327 | 0, /* rightshift */ |
| 328 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 329 | 0, /* bitsize */ |
| 330 | FALSE, /* pc_relative */ |
| 331 | 0, /* bitpos */ |
| 332 | complain_overflow_dont, /* complain_on_overflow */ |
| 333 | bfd_elf_generic_reloc, /* special_function */ |
| 334 | "R_TILEGX_GLOB_DAT", /* name */ |
| 335 | FALSE, /* partial_inplace */ |
| 336 | 0, /* src_mask */ |
| 337 | 0, /* dst_mask */ |
| 338 | TRUE), /* pcrel_offset */ |
| 339 | |
| 340 | HOWTO (R_TILEGX_JMP_SLOT, /* type */ |
| 341 | 0, /* rightshift */ |
| 342 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 343 | 0, /* bitsize */ |
| 344 | FALSE, /* pc_relative */ |
| 345 | 0, /* bitpos */ |
| 346 | complain_overflow_dont, /* complain_on_overflow */ |
| 347 | bfd_elf_generic_reloc, /* special_function */ |
| 348 | "R_TILEGX_JMP_SLOT", /* name */ |
| 349 | FALSE, /* partial_inplace */ |
| 350 | 0, /* src_mask */ |
| 351 | 0, /* dst_mask */ |
| 352 | TRUE), /* pcrel_offset */ |
| 353 | |
| 354 | HOWTO (R_TILEGX_RELATIVE, /* type */ |
| 355 | 0, /* rightshift */ |
| 356 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 357 | 0, /* bitsize */ |
| 358 | FALSE, /* pc_relative */ |
| 359 | 0, /* bitpos */ |
| 360 | complain_overflow_dont, /* complain_on_overflow */ |
| 361 | bfd_elf_generic_reloc, /* special_function */ |
| 362 | "R_TILEGX_RELATIVE", /* name */ |
| 363 | FALSE, /* partial_inplace */ |
| 364 | 0, /* src_mask */ |
| 365 | 0, /* dst_mask */ |
| 366 | TRUE), /* pcrel_offset */ |
| 367 | |
| 368 | HOWTO (R_TILEGX_BROFF_X1, /* type */ |
| 369 | TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ |
| 370 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 371 | 17, /* bitsize */ |
| 372 | TRUE, /* pc_relative */ |
| 373 | 0, /* bitpos */ |
| 374 | complain_overflow_signed, /* complain_on_overflow */ |
| 375 | bfd_elf_generic_reloc, /* special_function */ |
| 376 | "R_TILEGX_BROFF_X1", /* name */ |
| 377 | FALSE, /* partial_inplace */ |
| 378 | 0, /* src_mask */ |
| 379 | -1, /* dst_mask */ |
| 380 | TRUE), /* pcrel_offset */ |
| 381 | |
| 382 | HOWTO (R_TILEGX_JUMPOFF_X1, /* type */ |
| 383 | TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ |
| 384 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 385 | 27, /* bitsize */ |
| 386 | TRUE, /* pc_relative */ |
| 387 | 0, /* bitpos */ |
| 388 | complain_overflow_signed,/* complain_on_overflow */ |
| 389 | bfd_elf_generic_reloc, /* special_function */ |
| 390 | "R_TILEGX_JUMPOFF_X1", /* name */ |
| 391 | FALSE, /* partial_inplace */ |
| 392 | 0, /* src_mask */ |
| 393 | -1, /* dst_mask */ |
| 394 | TRUE), /* pcrel_offset */ |
| 395 | |
| 396 | HOWTO (R_TILEGX_JUMPOFF_X1_PLT, /* type */ |
| 397 | TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ |
| 398 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 399 | 27, /* bitsize */ |
| 400 | TRUE, /* pc_relative */ |
| 401 | 0, /* bitpos */ |
| 402 | complain_overflow_signed,/* complain_on_overflow */ |
| 403 | bfd_elf_generic_reloc, /* special_function */ |
| 404 | "R_TILEGX_JUMPOFF_X1_PLT", /* name */ |
| 405 | FALSE, /* partial_inplace */ |
| 406 | 0, /* src_mask */ |
| 407 | -1, /* dst_mask */ |
| 408 | TRUE), /* pcrel_offset */ |
| 409 | |
| 410 | #define TILEGX_IMM_HOWTO(name, size, bitsize) \ |
| 411 | HOWTO (name, 0, size, bitsize, FALSE, 0, \ |
| 412 | complain_overflow_signed, bfd_elf_generic_reloc, \ |
| 413 | #name, FALSE, 0, -1, FALSE) |
| 414 | |
| 415 | #define TILEGX_UIMM_HOWTO(name, size, bitsize) \ |
| 416 | HOWTO (name, 0, size, bitsize, FALSE, 0, \ |
| 417 | complain_overflow_unsigned, bfd_elf_generic_reloc, \ |
| 418 | #name, FALSE, 0, -1, FALSE) |
| 419 | |
| 420 | TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0, 0, 8), |
| 421 | TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0, 0, 8), |
| 422 | TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1, 0, 8), |
| 423 | TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1, 0, 8), |
| 424 | TILEGX_IMM_HOWTO(R_TILEGX_DEST_IMM8_X1, 0, 8), |
| 425 | |
| 426 | TILEGX_UIMM_HOWTO(R_TILEGX_MT_IMM14_X1, 1, 14), |
| 427 | TILEGX_UIMM_HOWTO(R_TILEGX_MF_IMM14_X1, 1, 14), |
| 428 | |
| 429 | TILEGX_UIMM_HOWTO(R_TILEGX_MMSTART_X0, 0, 6), |
| 430 | TILEGX_UIMM_HOWTO(R_TILEGX_MMEND_X0, 0, 6), |
| 431 | |
| 432 | TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_X0, 0, 6), |
| 433 | TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_X1, 0, 6), |
| 434 | TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_Y0, 0, 6), |
| 435 | TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_Y1, 0, 6), |
| 436 | |
| 437 | #define TILEGX_IMM16_HOWTO(name, rshift) \ |
| 438 | HOWTO (name, rshift, 1, 16, FALSE, 0, \ |
| 439 | complain_overflow_dont, bfd_elf_generic_reloc, \ |
| 440 | #name, FALSE, 0, 0xffff, FALSE) |
| 441 | |
| 442 | TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0, 0), |
| 443 | TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0, 0), |
| 444 | TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW1, 16), |
| 445 | TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW1, 16), |
| 446 | TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW2, 32), |
| 447 | TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW2, 32), |
| 448 | TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW3, 48), |
| 449 | TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW3, 48), |
| 450 | |
| 451 | #define TILEGX_IMM16_HOWTO_LAST(name, rshift) \ |
| 452 | HOWTO (name, rshift, 1, 16, FALSE, 0, \ |
| 453 | complain_overflow_signed, bfd_elf_generic_reloc, \ |
| 454 | #name, FALSE, 0, 0xffff, FALSE) |
| 455 | |
| 456 | TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST, 0), |
| 457 | TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST, 0), |
| 458 | TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST, 16), |
| 459 | TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST, 16), |
| 460 | TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW2_LAST, 32), |
| 461 | TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW2_LAST, 32), |
| 462 | |
| 463 | /* PC-relative offsets. */ |
| 464 | |
| 465 | #define TILEGX_IMM16_HOWTO_PCREL(name, rshift) \ |
| 466 | HOWTO (name, rshift, 1, 16, TRUE, 0, \ |
| 467 | complain_overflow_dont, bfd_elf_generic_reloc, \ |
| 468 | #name, FALSE, 0, 0xffff, TRUE) |
| 469 | |
| 470 | TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW0_PCREL, 0), |
| 471 | TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW0_PCREL, 0), |
| 472 | TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW1_PCREL, 16), |
| 473 | TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW1_PCREL, 16), |
| 474 | TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW2_PCREL, 32), |
| 475 | TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW2_PCREL, 32), |
| 476 | TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW3_PCREL, 48), |
| 477 | TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW3_PCREL, 48), |
| 478 | |
| 479 | #define TILEGX_IMM16_HOWTO_LAST_PCREL(name, rshift) \ |
| 480 | HOWTO (name, rshift, 1, 16, TRUE, 0, \ |
| 481 | complain_overflow_signed, bfd_elf_generic_reloc, \ |
| 482 | #name, FALSE, 0, 0xffff, TRUE) |
| 483 | |
| 484 | TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW0_LAST_PCREL, 0), |
| 485 | TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW0_LAST_PCREL, 0), |
| 486 | TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW1_LAST_PCREL, 16), |
| 487 | TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW1_LAST_PCREL, 16), |
| 488 | TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW2_LAST_PCREL, 32), |
| 489 | TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW2_LAST_PCREL, 32), |
| 490 | |
| 491 | TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_GOT, 0), |
| 492 | TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_GOT, 0), |
| 493 | |
| 494 | TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW0_PLT_PCREL, 0), |
| 495 | TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW0_PLT_PCREL, 0), |
| 496 | TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW1_PLT_PCREL, 16), |
| 497 | TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW1_PLT_PCREL, 16), |
| 498 | TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW2_PLT_PCREL, 32), |
| 499 | TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW2_PLT_PCREL, 32), |
| 500 | |
| 501 | TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_GOT, 0), |
| 502 | TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_GOT, 0), |
| 503 | TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_GOT, 16), |
| 504 | TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_GOT, 16), |
| 505 | |
| 506 | TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW3_PLT_PCREL, 48), |
| 507 | TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW3_PLT_PCREL, 48), |
| 508 | |
| 509 | TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_TLS_GD, 0), |
| 510 | TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_TLS_GD, 0), |
| 511 | |
| 512 | TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_TLS_LE, 0), |
| 513 | TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_TLS_LE, 0), |
| 514 | TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE, 0), |
| 515 | TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE, 0), |
| 516 | TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE, 16), |
| 517 | TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE, 16), |
| 518 | |
| 519 | TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD, 0), |
| 520 | TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD, 0), |
| 521 | TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD, 16), |
| 522 | TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD, 16), |
| 523 | EMPTY_HOWTO (90), |
| 524 | EMPTY_HOWTO (91), |
| 525 | |
| 526 | #define TILEGX_IMM16_HOWTO_TLS_IE(name, rshift) \ |
| 527 | HOWTO (name, rshift, 1, 16, FALSE, 0, \ |
| 528 | complain_overflow_dont, bfd_elf_generic_reloc, \ |
| 529 | #name, FALSE, 0, 0xffff, TRUE) |
| 530 | |
| 531 | TILEGX_IMM16_HOWTO_TLS_IE (R_TILEGX_IMM16_X0_HW0_TLS_IE, 0), |
| 532 | TILEGX_IMM16_HOWTO_TLS_IE (R_TILEGX_IMM16_X1_HW0_TLS_IE, 0), |
| 533 | |
| 534 | TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL, 0), |
| 535 | TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL, 0), |
| 536 | TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL, 16), |
| 537 | TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL, 16), |
| 538 | TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL, 32), |
| 539 | TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL, 32), |
| 540 | |
| 541 | #define TILEGX_IMM16_HOWTO_LAST_TLS_IE(name, rshift) \ |
| 542 | HOWTO (name, rshift, 1, 16, FALSE, 0, \ |
| 543 | complain_overflow_signed, bfd_elf_generic_reloc, \ |
| 544 | #name, FALSE, 0, 0xffff, TRUE) |
| 545 | |
| 546 | TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE, 0), |
| 547 | TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE, 0), |
| 548 | TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE, 16), |
| 549 | TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE, 16), |
| 550 | EMPTY_HOWTO (104), |
| 551 | EMPTY_HOWTO (105), |
| 552 | |
| 553 | HOWTO(R_TILEGX_TLS_DTPMOD64, 0, 0, 0, FALSE, 0, complain_overflow_dont, |
| 554 | bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPMOD64", |
| 555 | FALSE, 0, 0, TRUE), |
| 556 | HOWTO(R_TILEGX_TLS_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, |
| 557 | bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPOFF64", |
| 558 | FALSE, 0, -1, TRUE), |
| 559 | HOWTO(R_TILEGX_TLS_TPOFF64, 0, 0, 0, FALSE, 0, complain_overflow_dont, |
| 560 | bfd_elf_generic_reloc, "R_TILEGX_TLS_TPOFF64", |
| 561 | FALSE, 0, 0, TRUE), |
| 562 | |
| 563 | HOWTO(R_TILEGX_TLS_DTPMOD32, 0, 0, 0, FALSE, 0, complain_overflow_dont, |
| 564 | bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPMOD32", |
| 565 | FALSE, 0, 0, TRUE), |
| 566 | HOWTO(R_TILEGX_TLS_DTPOFF32, 0, 4, 32, FALSE, 0, complain_overflow_bitfield, |
| 567 | bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPOFF32", |
| 568 | FALSE, 0, -1, TRUE), |
| 569 | HOWTO(R_TILEGX_TLS_TPOFF32, 0, 0, 0, FALSE, 0, complain_overflow_dont, |
| 570 | bfd_elf_generic_reloc, "R_TILEGX_TLS_TPOFF32", |
| 571 | FALSE, 0, 0, TRUE), |
| 572 | |
| 573 | HOWTO (R_TILEGX_TLS_GD_CALL, /* type */ |
| 574 | TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */ |
| 575 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 576 | 27, /* bitsize */ |
| 577 | TRUE, /* pc_relative */ |
| 578 | 0, /* bitpos */ |
| 579 | complain_overflow_signed,/* complain_on_overflow */ |
| 580 | bfd_elf_generic_reloc, /* special_function */ |
| 581 | "R_TILEGX_TLS_GD_CALL", /* name */ |
| 582 | FALSE, /* partial_inplace */ |
| 583 | 0, /* src_mask */ |
| 584 | -1, /* dst_mask */ |
| 585 | TRUE), /* pcrel_offset */ |
| 586 | |
| 587 | TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0_TLS_GD_ADD, 0, 8), |
| 588 | TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_GD_ADD, 0, 8), |
| 589 | TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_GD_ADD, 0, 8), |
| 590 | TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_GD_ADD, 0, 8), |
| 591 | TILEGX_IMM_HOWTO(R_TILEGX_TLS_IE_LOAD, 0, 8), |
| 592 | TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0_TLS_ADD, 0, 8), |
| 593 | TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_ADD, 0, 8), |
| 594 | TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_ADD, 0, 8), |
| 595 | TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_ADD, 0, 8), |
| 596 | }; |
| 597 | |
| 598 | static reloc_howto_type tilegx_elf_howto_table2 [] = |
| 599 | { |
| 600 | /* GNU extension to record C++ vtable hierarchy */ |
| 601 | HOWTO (R_TILEGX_GNU_VTINHERIT, /* type */ |
| 602 | 0, /* rightshift */ |
| 603 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
| 604 | 0, /* bitsize */ |
| 605 | FALSE, /* pc_relative */ |
| 606 | 0, /* bitpos */ |
| 607 | complain_overflow_dont, /* complain_on_overflow */ |
| 608 | NULL, /* special_function */ |
| 609 | "R_TILEGX_GNU_VTINHERIT", /* name */ |
| 610 | FALSE, /* partial_inplace */ |
| 611 | 0, /* src_mask */ |
| 612 | 0, /* dst_mask */ |
| 613 | FALSE), /* pcrel_offset */ |
| 614 | |
| 615 | /* GNU extension to record C++ vtable member usage */ |
| 616 | HOWTO (R_TILEGX_GNU_VTENTRY, /* type */ |
| 617 | 0, /* rightshift */ |
| 618 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
| 619 | 0, /* bitsize */ |
| 620 | FALSE, /* pc_relative */ |
| 621 | 0, /* bitpos */ |
| 622 | complain_overflow_dont, /* complain_on_overflow */ |
| 623 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
| 624 | "R_TILEGX_GNU_VTENTRY", /* name */ |
| 625 | FALSE, /* partial_inplace */ |
| 626 | 0, /* src_mask */ |
| 627 | 0, /* dst_mask */ |
| 628 | FALSE), /* pcrel_offset */ |
| 629 | |
| 630 | }; |
| 631 | \f |
| 632 | /* Map BFD reloc types to TILEGX ELF reloc types. */ |
| 633 | |
| 634 | typedef struct tilegx_reloc_map |
| 635 | { |
| 636 | bfd_reloc_code_real_type bfd_reloc_val; |
| 637 | unsigned int tilegx_reloc_val; |
| 638 | reloc_howto_type * table; |
| 639 | } reloc_map; |
| 640 | |
| 641 | static const reloc_map tilegx_reloc_map [] = |
| 642 | { |
| 643 | #define TH_REMAP(bfd, tilegx) \ |
| 644 | { bfd, tilegx, tilegx_elf_howto_table }, |
| 645 | |
| 646 | /* Standard relocations. */ |
| 647 | TH_REMAP (BFD_RELOC_NONE, R_TILEGX_NONE) |
| 648 | TH_REMAP (BFD_RELOC_64, R_TILEGX_64) |
| 649 | TH_REMAP (BFD_RELOC_32, R_TILEGX_32) |
| 650 | TH_REMAP (BFD_RELOC_16, R_TILEGX_16) |
| 651 | TH_REMAP (BFD_RELOC_8, R_TILEGX_8) |
| 652 | TH_REMAP (BFD_RELOC_64_PCREL, R_TILEGX_64_PCREL) |
| 653 | TH_REMAP (BFD_RELOC_32_PCREL, R_TILEGX_32_PCREL) |
| 654 | TH_REMAP (BFD_RELOC_16_PCREL, R_TILEGX_16_PCREL) |
| 655 | TH_REMAP (BFD_RELOC_8_PCREL, R_TILEGX_8_PCREL) |
| 656 | |
| 657 | #define SIMPLE_REMAP(t) TH_REMAP (BFD_RELOC_##t, R_##t) |
| 658 | |
| 659 | /* Custom relocations. */ |
| 660 | SIMPLE_REMAP (TILEGX_HW0) |
| 661 | SIMPLE_REMAP (TILEGX_HW1) |
| 662 | SIMPLE_REMAP (TILEGX_HW2) |
| 663 | SIMPLE_REMAP (TILEGX_HW3) |
| 664 | SIMPLE_REMAP (TILEGX_HW0_LAST) |
| 665 | SIMPLE_REMAP (TILEGX_HW1_LAST) |
| 666 | SIMPLE_REMAP (TILEGX_HW2_LAST) |
| 667 | SIMPLE_REMAP (TILEGX_COPY) |
| 668 | SIMPLE_REMAP (TILEGX_GLOB_DAT) |
| 669 | SIMPLE_REMAP (TILEGX_JMP_SLOT) |
| 670 | SIMPLE_REMAP (TILEGX_RELATIVE) |
| 671 | SIMPLE_REMAP (TILEGX_BROFF_X1) |
| 672 | SIMPLE_REMAP (TILEGX_JUMPOFF_X1) |
| 673 | SIMPLE_REMAP (TILEGX_JUMPOFF_X1_PLT) |
| 674 | SIMPLE_REMAP (TILEGX_IMM8_X0) |
| 675 | SIMPLE_REMAP (TILEGX_IMM8_Y0) |
| 676 | SIMPLE_REMAP (TILEGX_IMM8_X1) |
| 677 | SIMPLE_REMAP (TILEGX_IMM8_Y1) |
| 678 | SIMPLE_REMAP (TILEGX_DEST_IMM8_X1) |
| 679 | SIMPLE_REMAP (TILEGX_MT_IMM14_X1) |
| 680 | SIMPLE_REMAP (TILEGX_MF_IMM14_X1) |
| 681 | SIMPLE_REMAP (TILEGX_MMSTART_X0) |
| 682 | SIMPLE_REMAP (TILEGX_MMEND_X0) |
| 683 | SIMPLE_REMAP (TILEGX_SHAMT_X0) |
| 684 | SIMPLE_REMAP (TILEGX_SHAMT_X1) |
| 685 | SIMPLE_REMAP (TILEGX_SHAMT_Y0) |
| 686 | SIMPLE_REMAP (TILEGX_SHAMT_Y1) |
| 687 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW0) |
| 688 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW0) |
| 689 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW1) |
| 690 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW1) |
| 691 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW2) |
| 692 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW2) |
| 693 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW3) |
| 694 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW3) |
| 695 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST) |
| 696 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST) |
| 697 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST) |
| 698 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST) |
| 699 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST) |
| 700 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST) |
| 701 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_PCREL) |
| 702 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_PCREL) |
| 703 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_PCREL) |
| 704 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_PCREL) |
| 705 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_PCREL) |
| 706 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_PCREL) |
| 707 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW3_PCREL) |
| 708 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW3_PCREL) |
| 709 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_PCREL) |
| 710 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_PCREL) |
| 711 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_PCREL) |
| 712 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_PCREL) |
| 713 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST_PCREL) |
| 714 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST_PCREL) |
| 715 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_GOT) |
| 716 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_GOT) |
| 717 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_PLT_PCREL) |
| 718 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_PLT_PCREL) |
| 719 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_PLT_PCREL) |
| 720 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_PLT_PCREL) |
| 721 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_PLT_PCREL) |
| 722 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_PLT_PCREL) |
| 723 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_GOT) |
| 724 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_GOT) |
| 725 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_GOT) |
| 726 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_GOT) |
| 727 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW3_PLT_PCREL) |
| 728 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW3_PLT_PCREL) |
| 729 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_GD) |
| 730 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_GD) |
| 731 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_LE) |
| 732 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_LE) |
| 733 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_LE) |
| 734 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_LE) |
| 735 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_LE) |
| 736 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_LE) |
| 737 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_GD) |
| 738 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_GD) |
| 739 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_GD) |
| 740 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_GD) |
| 741 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_IE) |
| 742 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_IE) |
| 743 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL) |
| 744 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL) |
| 745 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL) |
| 746 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL) |
| 747 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL) |
| 748 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL) |
| 749 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_IE) |
| 750 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_IE) |
| 751 | SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_IE) |
| 752 | SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_IE) |
| 753 | |
| 754 | SIMPLE_REMAP (TILEGX_TLS_DTPMOD64) |
| 755 | SIMPLE_REMAP (TILEGX_TLS_DTPOFF64) |
| 756 | SIMPLE_REMAP (TILEGX_TLS_TPOFF64) |
| 757 | |
| 758 | SIMPLE_REMAP (TILEGX_TLS_DTPMOD32) |
| 759 | SIMPLE_REMAP (TILEGX_TLS_DTPOFF32) |
| 760 | SIMPLE_REMAP (TILEGX_TLS_TPOFF32) |
| 761 | |
| 762 | SIMPLE_REMAP (TILEGX_TLS_GD_CALL) |
| 763 | SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_GD_ADD) |
| 764 | SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_GD_ADD) |
| 765 | SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_GD_ADD) |
| 766 | SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_GD_ADD) |
| 767 | SIMPLE_REMAP (TILEGX_TLS_IE_LOAD) |
| 768 | SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_ADD) |
| 769 | SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_ADD) |
| 770 | SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_ADD) |
| 771 | SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_ADD) |
| 772 | |
| 773 | #undef SIMPLE_REMAP |
| 774 | #undef TH_REMAP |
| 775 | |
| 776 | { BFD_RELOC_VTABLE_INHERIT, R_TILEGX_GNU_VTINHERIT, tilegx_elf_howto_table2 }, |
| 777 | { BFD_RELOC_VTABLE_ENTRY, R_TILEGX_GNU_VTENTRY, tilegx_elf_howto_table2 }, |
| 778 | }; |
| 779 | |
| 780 | |
| 781 | |
| 782 | /* The TILE-Gx linker needs to keep track of the number of relocs that it |
| 783 | decides to copy as dynamic relocs in check_relocs for each symbol. |
| 784 | This is so that it can later discard them if they are found to be |
| 785 | unnecessary. We store the information in a field extending the |
| 786 | regular ELF linker hash table. */ |
| 787 | |
| 788 | struct tilegx_elf_dyn_relocs |
| 789 | { |
| 790 | struct tilegx_elf_dyn_relocs *next; |
| 791 | |
| 792 | /* The input section of the reloc. */ |
| 793 | asection *sec; |
| 794 | |
| 795 | /* Total number of relocs copied for the input section. */ |
| 796 | bfd_size_type count; |
| 797 | |
| 798 | /* Number of pc-relative relocs copied for the input section. */ |
| 799 | bfd_size_type pc_count; |
| 800 | }; |
| 801 | |
| 802 | /* TILEGX ELF linker hash entry. */ |
| 803 | |
| 804 | struct tilegx_elf_link_hash_entry |
| 805 | { |
| 806 | struct elf_link_hash_entry elf; |
| 807 | |
| 808 | /* Track dynamic relocs copied for this symbol. */ |
| 809 | struct tilegx_elf_dyn_relocs *dyn_relocs; |
| 810 | |
| 811 | #define GOT_UNKNOWN 0 |
| 812 | #define GOT_NORMAL 1 |
| 813 | #define GOT_TLS_GD 2 |
| 814 | #define GOT_TLS_IE 4 |
| 815 | unsigned char tls_type; |
| 816 | }; |
| 817 | |
| 818 | #define tilegx_elf_hash_entry(ent) \ |
| 819 | ((struct tilegx_elf_link_hash_entry *)(ent)) |
| 820 | |
| 821 | struct _bfd_tilegx_elf_obj_tdata |
| 822 | { |
| 823 | struct elf_obj_tdata root; |
| 824 | |
| 825 | /* tls_type for each local got entry. */ |
| 826 | char *local_got_tls_type; |
| 827 | }; |
| 828 | |
| 829 | #define _bfd_tilegx_elf_tdata(abfd) \ |
| 830 | ((struct _bfd_tilegx_elf_obj_tdata *) (abfd)->tdata.any) |
| 831 | |
| 832 | #define _bfd_tilegx_elf_local_got_tls_type(abfd) \ |
| 833 | (_bfd_tilegx_elf_tdata (abfd)->local_got_tls_type) |
| 834 | |
| 835 | #define is_tilegx_elf(bfd) \ |
| 836 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ |
| 837 | && elf_tdata (bfd) != NULL \ |
| 838 | && elf_object_id (bfd) == TILEGX_ELF_DATA) |
| 839 | |
| 840 | #include "elf/common.h" |
| 841 | #include "elf/internal.h" |
| 842 | |
| 843 | struct tilegx_elf_link_hash_table |
| 844 | { |
| 845 | struct elf_link_hash_table elf; |
| 846 | |
| 847 | int bytes_per_word; |
| 848 | int word_align_power; |
| 849 | int bytes_per_rela; |
| 850 | int dtpmod_reloc; |
| 851 | int dtpoff_reloc; |
| 852 | int tpoff_reloc; |
| 853 | bfd_vma (*r_info) (Elf_Internal_Rela *, bfd_vma, bfd_vma); |
| 854 | bfd_vma (*r_symndx) (bfd_vma); |
| 855 | void (*put_word) (bfd *, bfd_vma, void *); |
| 856 | const char *dynamic_interpreter; |
| 857 | |
| 858 | /* Short-cuts to get to dynamic linker sections. */ |
| 859 | asection *sdynbss; |
| 860 | asection *srelbss; |
| 861 | |
| 862 | /* Whether LE transition has been disabled for some of the |
| 863 | sections. */ |
| 864 | bfd_boolean disable_le_transition; |
| 865 | |
| 866 | /* Small local sym to section mapping cache. */ |
| 867 | struct sym_cache sym_cache; |
| 868 | }; |
| 869 | |
| 870 | |
| 871 | /* Get the Tile ELF linker hash table from a link_info structure. */ |
| 872 | #define tilegx_elf_hash_table(p) \ |
| 873 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
| 874 | == TILEGX_ELF_DATA ? ((struct tilegx_elf_link_hash_table *) ((p)->hash)) : NULL) |
| 875 | |
| 876 | #ifdef BFD64 |
| 877 | static bfd_vma |
| 878 | tilegx_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED, |
| 879 | bfd_vma rel_index, |
| 880 | bfd_vma type) |
| 881 | { |
| 882 | return ELF64_R_INFO (rel_index, type); |
| 883 | } |
| 884 | |
| 885 | static bfd_vma |
| 886 | tilegx_elf_r_symndx_64 (bfd_vma r_info) |
| 887 | { |
| 888 | return ELF64_R_SYM (r_info); |
| 889 | } |
| 890 | |
| 891 | static void |
| 892 | tilegx_put_word_64 (bfd *abfd, bfd_vma val, void *ptr) |
| 893 | { |
| 894 | bfd_put_64 (abfd, val, ptr); |
| 895 | } |
| 896 | #endif /* BFD64 */ |
| 897 | |
| 898 | static bfd_vma |
| 899 | tilegx_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED, |
| 900 | bfd_vma rel_index, |
| 901 | bfd_vma type) |
| 902 | { |
| 903 | return ELF32_R_INFO (rel_index, type); |
| 904 | } |
| 905 | |
| 906 | static bfd_vma |
| 907 | tilegx_elf_r_symndx_32 (bfd_vma r_info) |
| 908 | { |
| 909 | return ELF32_R_SYM (r_info); |
| 910 | } |
| 911 | |
| 912 | static void |
| 913 | tilegx_put_word_32 (bfd *abfd, bfd_vma val, void *ptr) |
| 914 | { |
| 915 | bfd_put_32 (abfd, val, ptr); |
| 916 | } |
| 917 | |
| 918 | reloc_howto_type * |
| 919 | tilegx_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, |
| 920 | bfd_reloc_code_real_type code) |
| 921 | { |
| 922 | unsigned int i; |
| 923 | |
| 924 | for (i = ARRAY_SIZE (tilegx_reloc_map); --i;) |
| 925 | { |
| 926 | const reloc_map * entry; |
| 927 | |
| 928 | entry = tilegx_reloc_map + i; |
| 929 | |
| 930 | if (entry->bfd_reloc_val == code) |
| 931 | return entry->table + (entry->tilegx_reloc_val |
| 932 | - entry->table[0].type); |
| 933 | } |
| 934 | |
| 935 | return NULL; |
| 936 | } |
| 937 | |
| 938 | reloc_howto_type * |
| 939 | tilegx_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 940 | const char *r_name) |
| 941 | { |
| 942 | unsigned int i; |
| 943 | |
| 944 | for (i = 0; |
| 945 | i < (sizeof (tilegx_elf_howto_table) |
| 946 | / sizeof (tilegx_elf_howto_table[0])); |
| 947 | i++) |
| 948 | if (tilegx_elf_howto_table[i].name != NULL |
| 949 | && strcasecmp (tilegx_elf_howto_table[i].name, r_name) == 0) |
| 950 | return &tilegx_elf_howto_table[i]; |
| 951 | |
| 952 | return NULL; |
| 953 | } |
| 954 | |
| 955 | void |
| 956 | tilegx_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, |
| 957 | arelent *cache_ptr, |
| 958 | Elf_Internal_Rela *dst) |
| 959 | { |
| 960 | unsigned int r_type = TILEGX_ELF_R_TYPE (dst->r_info); |
| 961 | |
| 962 | if (r_type <= (unsigned int) R_TILEGX_IMM8_Y1_TLS_ADD) |
| 963 | cache_ptr->howto = &tilegx_elf_howto_table [r_type]; |
| 964 | else if (r_type - R_TILEGX_GNU_VTINHERIT |
| 965 | <= (unsigned int) R_TILEGX_GNU_VTENTRY) |
| 966 | cache_ptr->howto |
| 967 | = &tilegx_elf_howto_table2 [r_type - R_TILEGX_GNU_VTINHERIT]; |
| 968 | else |
| 969 | abort (); |
| 970 | } |
| 971 | |
| 972 | typedef tilegx_bundle_bits (*tilegx_create_func)(int); |
| 973 | |
| 974 | static const tilegx_create_func reloc_to_create_func[] = |
| 975 | { |
| 976 | /* The first twenty relocation types don't correspond to operands */ |
| 977 | NULL, |
| 978 | NULL, |
| 979 | NULL, |
| 980 | NULL, |
| 981 | NULL, |
| 982 | NULL, |
| 983 | NULL, |
| 984 | NULL, |
| 985 | NULL, |
| 986 | NULL, |
| 987 | NULL, |
| 988 | NULL, |
| 989 | NULL, |
| 990 | NULL, |
| 991 | NULL, |
| 992 | NULL, |
| 993 | NULL, |
| 994 | NULL, |
| 995 | NULL, |
| 996 | NULL, |
| 997 | |
| 998 | /* The remaining relocations are used for immediate operands */ |
| 999 | create_BrOff_X1, |
| 1000 | create_JumpOff_X1, |
| 1001 | create_JumpOff_X1, |
| 1002 | create_Imm8_X0, |
| 1003 | create_Imm8_Y0, |
| 1004 | create_Imm8_X1, |
| 1005 | create_Imm8_Y1, |
| 1006 | create_Dest_Imm8_X1, |
| 1007 | create_MT_Imm14_X1, |
| 1008 | create_MF_Imm14_X1, |
| 1009 | create_BFStart_X0, |
| 1010 | create_BFEnd_X0, |
| 1011 | create_ShAmt_X0, |
| 1012 | create_ShAmt_X1, |
| 1013 | create_ShAmt_Y0, |
| 1014 | create_ShAmt_Y1, |
| 1015 | create_Imm16_X0, |
| 1016 | create_Imm16_X1, |
| 1017 | create_Imm16_X0, |
| 1018 | create_Imm16_X1, |
| 1019 | create_Imm16_X0, |
| 1020 | create_Imm16_X1, |
| 1021 | create_Imm16_X0, |
| 1022 | create_Imm16_X1, |
| 1023 | create_Imm16_X0, |
| 1024 | create_Imm16_X1, |
| 1025 | create_Imm16_X0, |
| 1026 | create_Imm16_X1, |
| 1027 | create_Imm16_X0, |
| 1028 | create_Imm16_X1, |
| 1029 | create_Imm16_X0, |
| 1030 | create_Imm16_X1, |
| 1031 | create_Imm16_X0, |
| 1032 | create_Imm16_X1, |
| 1033 | create_Imm16_X0, |
| 1034 | create_Imm16_X1, |
| 1035 | create_Imm16_X0, |
| 1036 | create_Imm16_X1, |
| 1037 | create_Imm16_X0, |
| 1038 | create_Imm16_X1, |
| 1039 | create_Imm16_X0, |
| 1040 | create_Imm16_X1, |
| 1041 | create_Imm16_X0, |
| 1042 | create_Imm16_X1, |
| 1043 | create_Imm16_X0, |
| 1044 | create_Imm16_X1, |
| 1045 | create_Imm16_X0, |
| 1046 | create_Imm16_X1, |
| 1047 | create_Imm16_X0, |
| 1048 | create_Imm16_X1, |
| 1049 | create_Imm16_X0, |
| 1050 | create_Imm16_X1, |
| 1051 | create_Imm16_X0, |
| 1052 | create_Imm16_X1, |
| 1053 | create_Imm16_X0, |
| 1054 | create_Imm16_X1, |
| 1055 | create_Imm16_X0, |
| 1056 | create_Imm16_X1, |
| 1057 | create_Imm16_X0, |
| 1058 | create_Imm16_X1, |
| 1059 | create_Imm16_X0, |
| 1060 | create_Imm16_X1, |
| 1061 | create_Imm16_X0, |
| 1062 | create_Imm16_X1, |
| 1063 | create_Imm16_X0, |
| 1064 | create_Imm16_X1, |
| 1065 | create_Imm16_X0, |
| 1066 | create_Imm16_X1, |
| 1067 | create_Imm16_X0, |
| 1068 | create_Imm16_X1, |
| 1069 | NULL, |
| 1070 | NULL, |
| 1071 | create_Imm16_X0, |
| 1072 | create_Imm16_X1, |
| 1073 | create_Imm16_X0, |
| 1074 | create_Imm16_X1, |
| 1075 | create_Imm16_X0, |
| 1076 | create_Imm16_X1, |
| 1077 | create_Imm16_X0, |
| 1078 | create_Imm16_X1, |
| 1079 | create_Imm16_X0, |
| 1080 | create_Imm16_X1, |
| 1081 | create_Imm16_X0, |
| 1082 | create_Imm16_X1, |
| 1083 | }; |
| 1084 | |
| 1085 | static void |
| 1086 | tilegx_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel) |
| 1087 | { |
| 1088 | const struct elf_backend_data *bed; |
| 1089 | bfd_byte *loc; |
| 1090 | |
| 1091 | bed = get_elf_backend_data (abfd); |
| 1092 | loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela); |
| 1093 | bed->s->swap_reloca_out (abfd, rel, loc); |
| 1094 | } |
| 1095 | |
| 1096 | /* PLT/GOT stuff */ |
| 1097 | |
| 1098 | /* The procedure linkage table starts with the following header: |
| 1099 | |
| 1100 | ld_add r28, r27, 8 |
| 1101 | ld r27, r27 |
| 1102 | { |
| 1103 | jr r27 |
| 1104 | info 10 ## SP not offset, return PC in LR |
| 1105 | } |
| 1106 | |
| 1107 | Subsequent entries are the following, jumping to the header at the end: |
| 1108 | |
| 1109 | { |
| 1110 | moveli r28, <_GLOBAL_OFFSET_TABLE_ - 1f + MY_GOT_OFFSET> |
| 1111 | lnk r26 |
| 1112 | } |
| 1113 | 1: |
| 1114 | { |
| 1115 | moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b> |
| 1116 | shl16insli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET> |
| 1117 | } |
| 1118 | { |
| 1119 | add r28, r26, r28 |
| 1120 | shl16insli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b> |
| 1121 | } |
| 1122 | { |
| 1123 | add r27, r26, r27 |
| 1124 | ld r28, r28 |
| 1125 | info 10 ## SP not offset, return PC in LR |
| 1126 | } |
| 1127 | { |
| 1128 | shl16insli r29, zero, MY_PLT_INDEX |
| 1129 | jr r28 |
| 1130 | } |
| 1131 | |
| 1132 | This code sequence lets the code at at the start of the PLT determine |
| 1133 | which PLT entry was executed by examining 'r29'. |
| 1134 | |
| 1135 | Note that MY_PLT_INDEX skips over the header entries, so the first |
| 1136 | actual jump table entry has index zero. |
| 1137 | |
| 1138 | If the offset fits in 16 bits, |
| 1139 | |
| 1140 | lnk r26 |
| 1141 | 1: |
| 1142 | { |
| 1143 | addli r28, r26, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET> |
| 1144 | moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b> |
| 1145 | } |
| 1146 | { |
| 1147 | shl16insli r29, zero, MY_PLT_INDEX |
| 1148 | ld r28, r28 |
| 1149 | } |
| 1150 | { |
| 1151 | add r27, r26, r27 |
| 1152 | jr r28 |
| 1153 | } |
| 1154 | info 10 ## SP not offset, return PC in LR |
| 1155 | |
| 1156 | For the purpose of backtracing, the procedure linkage table ends with the |
| 1157 | following tail entry: |
| 1158 | |
| 1159 | info 10 ## SP not offset, return PC in LR |
| 1160 | |
| 1161 | The 32-bit versions are similar, with ld4s replacing ld, and offsets into |
| 1162 | the GOT being multiples of 4 instead of 8. |
| 1163 | |
| 1164 | */ |
| 1165 | |
| 1166 | #define PLT_HEADER_SIZE_IN_BUNDLES 3 |
| 1167 | #define PLT_ENTRY_SIZE_IN_BUNDLES 5 |
| 1168 | #define PLT_TAIL_SIZE_IN_BUNDLES 1 |
| 1169 | |
| 1170 | #define PLT_HEADER_SIZE \ |
| 1171 | (PLT_HEADER_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES) |
| 1172 | #define PLT_ENTRY_SIZE \ |
| 1173 | (PLT_ENTRY_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES) |
| 1174 | #define PLT_TAIL_SIZE \ |
| 1175 | (PLT_TAIL_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES) |
| 1176 | |
| 1177 | #define GOT_ENTRY_SIZE(htab) TILEGX_ELF_WORD_BYTES (htab) |
| 1178 | |
| 1179 | #define GOTPLT_HEADER_SIZE(htab) (2 * GOT_ENTRY_SIZE (htab)) |
| 1180 | |
| 1181 | static const bfd_byte |
| 1182 | tilegx64_plt0_entry[PLT_HEADER_SIZE] = |
| 1183 | { |
| 1184 | 0x00, 0x30, 0x48, 0x51, |
| 1185 | 0x6e, 0x43, 0xa0, 0x18, /* { ld_add r28, r27, 8 } */ |
| 1186 | 0x00, 0x30, 0xbc, 0x35, |
| 1187 | 0x00, 0x40, 0xde, 0x9e, /* { ld r27, r27 } */ |
| 1188 | 0xff, 0xaf, 0x30, 0x40, |
| 1189 | 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */ |
| 1190 | }; |
| 1191 | |
| 1192 | static const bfd_byte |
| 1193 | tilegx64_long_plt_entry[PLT_ENTRY_SIZE] = |
| 1194 | { |
| 1195 | 0xdc, 0x0f, 0x00, 0x10, |
| 1196 | 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */ |
| 1197 | 0xdb, 0x0f, 0x00, 0x10, |
| 1198 | 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */ |
| 1199 | 0x9c, 0xc6, 0x0d, 0xd0, |
| 1200 | 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */ |
| 1201 | 0x9b, 0xb6, 0xc5, 0xad, |
| 1202 | 0xff, 0x57, 0xe0, 0x8e, /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */ |
| 1203 | 0xdd, 0x0f, 0x00, 0x70, |
| 1204 | 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */ |
| 1205 | }; |
| 1206 | |
| 1207 | static const bfd_byte |
| 1208 | tilegx64_short_plt_entry[PLT_ENTRY_SIZE] = |
| 1209 | { |
| 1210 | 0x00, 0x30, 0x48, 0x51, |
| 1211 | 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */ |
| 1212 | 0x9c, 0x06, 0x00, 0x90, |
| 1213 | 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */ |
| 1214 | 0xdd, 0x0f, 0x00, 0x70, |
| 1215 | 0x8e, 0xeb, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld r28, r28 } */ |
| 1216 | 0x9b, 0xb6, 0x0d, 0x50, |
| 1217 | 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */ |
| 1218 | 0x00, 0x30, 0x48, 0xd1, |
| 1219 | 0xff, 0x57, 0x18, 0x18, /* { info 10 } */ |
| 1220 | }; |
| 1221 | |
| 1222 | /* Reuse an existing info 10 bundle. */ |
| 1223 | static const bfd_byte *const tilegx64_plt_tail_entry = |
| 1224 | &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES]; |
| 1225 | |
| 1226 | static const bfd_byte |
| 1227 | tilegx32_plt0_entry[PLT_HEADER_SIZE] = |
| 1228 | { |
| 1229 | 0x00, 0x30, 0x48, 0x51, |
| 1230 | 0x6e, 0x23, 0x58, 0x18, /* { ld4s_add r28, r27, 4 } */ |
| 1231 | 0x00, 0x30, 0xbc, 0x35, |
| 1232 | 0x00, 0x40, 0xde, 0x9c, /* { ld4s r27, r27 } */ |
| 1233 | 0xff, 0xaf, 0x30, 0x40, |
| 1234 | 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */ |
| 1235 | }; |
| 1236 | |
| 1237 | static const bfd_byte |
| 1238 | tilegx32_long_plt_entry[PLT_ENTRY_SIZE] = |
| 1239 | { |
| 1240 | 0xdc, 0x0f, 0x00, 0x10, |
| 1241 | 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */ |
| 1242 | 0xdb, 0x0f, 0x00, 0x10, |
| 1243 | 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */ |
| 1244 | 0x9c, 0xc6, 0x0d, 0xd0, |
| 1245 | 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */ |
| 1246 | 0x9b, 0xb6, 0xc5, 0xad, |
| 1247 | 0xff, 0x57, 0xe0, 0x8c, /* { add r27, r26, r27 ; info 10 ; ld4s r28, r28 } */ |
| 1248 | 0xdd, 0x0f, 0x00, 0x70, |
| 1249 | 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */ |
| 1250 | }; |
| 1251 | |
| 1252 | static const bfd_byte |
| 1253 | tilegx32_short_plt_entry[PLT_ENTRY_SIZE] = |
| 1254 | { |
| 1255 | 0x00, 0x30, 0x48, 0x51, |
| 1256 | 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */ |
| 1257 | 0x9c, 0x06, 0x00, 0x90, |
| 1258 | 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */ |
| 1259 | 0xdd, 0x0f, 0x00, 0x70, |
| 1260 | 0x8e, 0x9b, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld4s r28, r28 } */ |
| 1261 | 0x9b, 0xb6, 0x0d, 0x50, |
| 1262 | 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */ |
| 1263 | 0x00, 0x30, 0x48, 0xd1, |
| 1264 | 0xff, 0x57, 0x18, 0x18, /* { info 10 } */ |
| 1265 | }; |
| 1266 | |
| 1267 | /* Reuse an existing info 10 bundle. */ |
| 1268 | static const bfd_byte *const tilegx32_plt_tail_entry = |
| 1269 | &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES]; |
| 1270 | |
| 1271 | static int |
| 1272 | tilegx_plt_entry_build (bfd *output_bfd, |
| 1273 | struct tilegx_elf_link_hash_table *htab, |
| 1274 | asection *splt, asection *sgotplt, |
| 1275 | bfd_vma offset, bfd_vma *r_offset) |
| 1276 | { |
| 1277 | int plt_index = (offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; |
| 1278 | int got_offset = (plt_index * GOT_ENTRY_SIZE (htab) |
| 1279 | + GOTPLT_HEADER_SIZE (htab)); |
| 1280 | tilegx_bundle_bits *pc; |
| 1281 | |
| 1282 | /* Compute the distance from the got entry to the lnk. */ |
| 1283 | bfd_signed_vma dist_got_entry = sgotplt->output_section->vma |
| 1284 | + sgotplt->output_offset |
| 1285 | + got_offset |
| 1286 | - splt->output_section->vma |
| 1287 | - splt->output_offset |
| 1288 | - offset |
| 1289 | - TILEGX_BUNDLE_SIZE_IN_BYTES; |
| 1290 | |
| 1291 | /* Compute the distance to GOTPLT[0]. */ |
| 1292 | bfd_signed_vma dist_got0 = dist_got_entry - got_offset; |
| 1293 | |
| 1294 | /* Check whether we can use the short plt entry with 16-bit offset. */ |
| 1295 | bfd_boolean short_plt_entry = |
| 1296 | (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000); |
| 1297 | |
| 1298 | const tilegx_bundle_bits *plt_entry = (tilegx_bundle_bits *) |
| 1299 | (ABI_64_P (output_bfd) ? |
| 1300 | (short_plt_entry ? tilegx64_short_plt_entry : tilegx64_long_plt_entry) : |
| 1301 | (short_plt_entry ? tilegx32_short_plt_entry : tilegx32_long_plt_entry)); |
| 1302 | |
| 1303 | /* Copy the plt entry template. */ |
| 1304 | memcpy (splt->contents + offset, plt_entry, PLT_ENTRY_SIZE); |
| 1305 | |
| 1306 | /* Write the immediate offsets. */ |
| 1307 | pc = (tilegx_bundle_bits *)(splt->contents + offset); |
| 1308 | |
| 1309 | if (short_plt_entry) |
| 1310 | { |
| 1311 | /* { lnk r28 } */ |
| 1312 | pc++; |
| 1313 | |
| 1314 | /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; moveli r27, &GOTPLT[0] } */ |
| 1315 | *pc++ |= create_Imm16_X0 (dist_got_entry) |
| 1316 | | create_Imm16_X1 (dist_got0); |
| 1317 | |
| 1318 | /* { shl16insli r29, zero, MY_PLT_INDEX ; ld r28, r28 } */ |
| 1319 | *pc++ |= create_Imm16_X0 (plt_index); |
| 1320 | } |
| 1321 | else |
| 1322 | { |
| 1323 | /* { moveli r28, &GOTPLT[MY_GOT_INDEX] ; lnk r26 } */ |
| 1324 | *pc++ |= create_Imm16_X0 (dist_got_entry >> 16); |
| 1325 | |
| 1326 | /* { moveli r27, &GOTPLT[0] ; |
| 1327 | shl16insli r28, r28, &GOTPLT[MY_GOT_INDEX] } */ |
| 1328 | *pc++ |= create_Imm16_X0 (dist_got0 >> 16) |
| 1329 | | create_Imm16_X1 (dist_got_entry); |
| 1330 | |
| 1331 | /* { add r28, r26, r28 ; shl16insli r27, r27, &GOTPLT[0] } */ |
| 1332 | *pc++ |= create_Imm16_X1 (dist_got0); |
| 1333 | |
| 1334 | /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */ |
| 1335 | pc++; |
| 1336 | |
| 1337 | /* { shl16insli r29, zero, MY_GOT_INDEX ; jr r28 } */ |
| 1338 | *pc++ |= create_Imm16_X0 (plt_index); |
| 1339 | } |
| 1340 | |
| 1341 | /* Set the relocation offset. */ |
| 1342 | *r_offset = got_offset; |
| 1343 | |
| 1344 | return plt_index; |
| 1345 | } |
| 1346 | |
| 1347 | /* Create an entry in an TILEGX ELF linker hash table. */ |
| 1348 | |
| 1349 | static struct bfd_hash_entry * |
| 1350 | link_hash_newfunc (struct bfd_hash_entry *entry, |
| 1351 | struct bfd_hash_table *table, const char *string) |
| 1352 | { |
| 1353 | /* Allocate the structure if it has not already been allocated by a |
| 1354 | subclass. */ |
| 1355 | if (entry == NULL) |
| 1356 | { |
| 1357 | entry = |
| 1358 | bfd_hash_allocate (table, |
| 1359 | sizeof (struct tilegx_elf_link_hash_entry)); |
| 1360 | if (entry == NULL) |
| 1361 | return entry; |
| 1362 | } |
| 1363 | |
| 1364 | /* Call the allocation method of the superclass. */ |
| 1365 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
| 1366 | if (entry != NULL) |
| 1367 | { |
| 1368 | struct tilegx_elf_link_hash_entry *eh; |
| 1369 | |
| 1370 | eh = (struct tilegx_elf_link_hash_entry *) entry; |
| 1371 | eh->dyn_relocs = NULL; |
| 1372 | eh->tls_type = GOT_UNKNOWN; |
| 1373 | } |
| 1374 | |
| 1375 | return entry; |
| 1376 | } |
| 1377 | |
| 1378 | /* Create a TILEGX ELF linker hash table. */ |
| 1379 | |
| 1380 | struct bfd_link_hash_table * |
| 1381 | tilegx_elf_link_hash_table_create (bfd *abfd) |
| 1382 | { |
| 1383 | struct tilegx_elf_link_hash_table *ret; |
| 1384 | bfd_size_type amt = sizeof (struct tilegx_elf_link_hash_table); |
| 1385 | |
| 1386 | ret = (struct tilegx_elf_link_hash_table *) bfd_zmalloc (amt); |
| 1387 | if (ret == NULL) |
| 1388 | return NULL; |
| 1389 | |
| 1390 | #ifdef BFD64 |
| 1391 | if (ABI_64_P (abfd)) |
| 1392 | { |
| 1393 | ret->bytes_per_word = 8; |
| 1394 | ret->word_align_power = 3; |
| 1395 | ret->bytes_per_rela = sizeof (Elf64_External_Rela); |
| 1396 | ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF64; |
| 1397 | ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD64; |
| 1398 | ret->tpoff_reloc = R_TILEGX_TLS_TPOFF64; |
| 1399 | ret->r_info = tilegx_elf_r_info_64; |
| 1400 | ret->r_symndx = tilegx_elf_r_symndx_64; |
| 1401 | ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER; |
| 1402 | ret->put_word = tilegx_put_word_64; |
| 1403 | } |
| 1404 | else |
| 1405 | #endif |
| 1406 | { |
| 1407 | ret->bytes_per_word = 4; |
| 1408 | ret->word_align_power = 2; |
| 1409 | ret->bytes_per_rela = sizeof (Elf32_External_Rela); |
| 1410 | ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF32; |
| 1411 | ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD32; |
| 1412 | ret->tpoff_reloc = R_TILEGX_TLS_TPOFF32; |
| 1413 | ret->r_info = tilegx_elf_r_info_32; |
| 1414 | ret->r_symndx = tilegx_elf_r_symndx_32; |
| 1415 | ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER; |
| 1416 | ret->put_word = tilegx_put_word_32; |
| 1417 | } |
| 1418 | |
| 1419 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, |
| 1420 | sizeof (struct tilegx_elf_link_hash_entry), |
| 1421 | TILEGX_ELF_DATA)) |
| 1422 | { |
| 1423 | free (ret); |
| 1424 | return NULL; |
| 1425 | } |
| 1426 | |
| 1427 | return &ret->elf.root; |
| 1428 | } |
| 1429 | |
| 1430 | /* Create the .got section. */ |
| 1431 | |
| 1432 | static bfd_boolean |
| 1433 | tilegx_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) |
| 1434 | { |
| 1435 | flagword flags; |
| 1436 | asection *s, *s_got; |
| 1437 | struct elf_link_hash_entry *h; |
| 1438 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
| 1439 | struct elf_link_hash_table *htab = elf_hash_table (info); |
| 1440 | |
| 1441 | /* This function may be called more than once. */ |
| 1442 | s = bfd_get_linker_section (abfd, ".got"); |
| 1443 | if (s != NULL) |
| 1444 | return TRUE; |
| 1445 | |
| 1446 | flags = bed->dynamic_sec_flags; |
| 1447 | |
| 1448 | s = bfd_make_section_anyway_with_flags (abfd, |
| 1449 | (bed->rela_plts_and_copies_p |
| 1450 | ? ".rela.got" : ".rel.got"), |
| 1451 | (bed->dynamic_sec_flags |
| 1452 | | SEC_READONLY)); |
| 1453 | if (s == NULL |
| 1454 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) |
| 1455 | return FALSE; |
| 1456 | htab->srelgot = s; |
| 1457 | |
| 1458 | s = s_got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
| 1459 | if (s == NULL |
| 1460 | || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) |
| 1461 | return FALSE; |
| 1462 | htab->sgot = s; |
| 1463 | |
| 1464 | /* The first bit of the global offset table is the header. */ |
| 1465 | s->size += bed->got_header_size; |
| 1466 | |
| 1467 | if (bed->want_got_plt) |
| 1468 | { |
| 1469 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); |
| 1470 | if (s == NULL |
| 1471 | || !bfd_set_section_alignment (abfd, s, |
| 1472 | bed->s->log_file_align)) |
| 1473 | return FALSE; |
| 1474 | htab->sgotplt = s; |
| 1475 | |
| 1476 | /* Reserve room for the header. */ |
| 1477 | s->size += GOTPLT_HEADER_SIZE (tilegx_elf_hash_table (info)); |
| 1478 | } |
| 1479 | |
| 1480 | if (bed->want_got_sym) |
| 1481 | { |
| 1482 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got |
| 1483 | section. We don't do this in the linker script because we don't want |
| 1484 | to define the symbol if we are not creating a global offset |
| 1485 | table. */ |
| 1486 | h = _bfd_elf_define_linkage_sym (abfd, info, s_got, |
| 1487 | "_GLOBAL_OFFSET_TABLE_"); |
| 1488 | elf_hash_table (info)->hgot = h; |
| 1489 | if (h == NULL) |
| 1490 | return FALSE; |
| 1491 | } |
| 1492 | |
| 1493 | return TRUE; |
| 1494 | } |
| 1495 | |
| 1496 | /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and |
| 1497 | .rela.bss sections in DYNOBJ, and set up shortcuts to them in our |
| 1498 | hash table. */ |
| 1499 | |
| 1500 | bfd_boolean |
| 1501 | tilegx_elf_create_dynamic_sections (bfd *dynobj, |
| 1502 | struct bfd_link_info *info) |
| 1503 | { |
| 1504 | struct tilegx_elf_link_hash_table *htab; |
| 1505 | |
| 1506 | htab = tilegx_elf_hash_table (info); |
| 1507 | BFD_ASSERT (htab != NULL); |
| 1508 | |
| 1509 | if (!tilegx_elf_create_got_section (dynobj, info)) |
| 1510 | return FALSE; |
| 1511 | |
| 1512 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
| 1513 | return FALSE; |
| 1514 | |
| 1515 | htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
| 1516 | if (!info->shared) |
| 1517 | htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
| 1518 | |
| 1519 | if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss |
| 1520 | || (!info->shared && !htab->srelbss)) |
| 1521 | abort (); |
| 1522 | |
| 1523 | return TRUE; |
| 1524 | } |
| 1525 | |
| 1526 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
| 1527 | |
| 1528 | void |
| 1529 | tilegx_elf_copy_indirect_symbol (struct bfd_link_info *info, |
| 1530 | struct elf_link_hash_entry *dir, |
| 1531 | struct elf_link_hash_entry *ind) |
| 1532 | { |
| 1533 | struct tilegx_elf_link_hash_entry *edir, *eind; |
| 1534 | |
| 1535 | edir = (struct tilegx_elf_link_hash_entry *) dir; |
| 1536 | eind = (struct tilegx_elf_link_hash_entry *) ind; |
| 1537 | |
| 1538 | if (eind->dyn_relocs != NULL) |
| 1539 | { |
| 1540 | if (edir->dyn_relocs != NULL) |
| 1541 | { |
| 1542 | struct tilegx_elf_dyn_relocs **pp; |
| 1543 | struct tilegx_elf_dyn_relocs *p; |
| 1544 | |
| 1545 | /* Add reloc counts against the indirect sym to the direct sym |
| 1546 | list. Merge any entries against the same section. */ |
| 1547 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) |
| 1548 | { |
| 1549 | struct tilegx_elf_dyn_relocs *q; |
| 1550 | |
| 1551 | for (q = edir->dyn_relocs; q != NULL; q = q->next) |
| 1552 | if (q->sec == p->sec) |
| 1553 | { |
| 1554 | q->pc_count += p->pc_count; |
| 1555 | q->count += p->count; |
| 1556 | *pp = p->next; |
| 1557 | break; |
| 1558 | } |
| 1559 | if (q == NULL) |
| 1560 | pp = &p->next; |
| 1561 | } |
| 1562 | *pp = edir->dyn_relocs; |
| 1563 | } |
| 1564 | |
| 1565 | edir->dyn_relocs = eind->dyn_relocs; |
| 1566 | eind->dyn_relocs = NULL; |
| 1567 | } |
| 1568 | |
| 1569 | if (ind->root.type == bfd_link_hash_indirect |
| 1570 | && dir->got.refcount <= 0) |
| 1571 | { |
| 1572 | edir->tls_type = eind->tls_type; |
| 1573 | eind->tls_type = GOT_UNKNOWN; |
| 1574 | } |
| 1575 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
| 1576 | } |
| 1577 | |
| 1578 | static int |
| 1579 | tilegx_tls_translate_to_le (int r_type) |
| 1580 | { |
| 1581 | switch (r_type) |
| 1582 | { |
| 1583 | case R_TILEGX_IMM16_X0_HW0_TLS_GD: |
| 1584 | case R_TILEGX_IMM16_X0_HW0_TLS_IE: |
| 1585 | return R_TILEGX_IMM16_X0_HW0_TLS_LE; |
| 1586 | |
| 1587 | case R_TILEGX_IMM16_X1_HW0_TLS_GD: |
| 1588 | case R_TILEGX_IMM16_X1_HW0_TLS_IE: |
| 1589 | return R_TILEGX_IMM16_X1_HW0_TLS_LE; |
| 1590 | |
| 1591 | case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: |
| 1592 | case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: |
| 1593 | return R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE; |
| 1594 | |
| 1595 | case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: |
| 1596 | case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: |
| 1597 | return R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE; |
| 1598 | |
| 1599 | case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: |
| 1600 | case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: |
| 1601 | return R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE; |
| 1602 | |
| 1603 | case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: |
| 1604 | case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: |
| 1605 | return R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE; |
| 1606 | } |
| 1607 | return r_type; |
| 1608 | } |
| 1609 | |
| 1610 | static int |
| 1611 | tilegx_tls_translate_to_ie (int r_type) |
| 1612 | { |
| 1613 | switch (r_type) |
| 1614 | { |
| 1615 | case R_TILEGX_IMM16_X0_HW0_TLS_GD: |
| 1616 | case R_TILEGX_IMM16_X0_HW0_TLS_IE: |
| 1617 | return R_TILEGX_IMM16_X0_HW0_TLS_IE; |
| 1618 | |
| 1619 | case R_TILEGX_IMM16_X1_HW0_TLS_GD: |
| 1620 | case R_TILEGX_IMM16_X1_HW0_TLS_IE: |
| 1621 | return R_TILEGX_IMM16_X1_HW0_TLS_IE; |
| 1622 | |
| 1623 | case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: |
| 1624 | case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: |
| 1625 | return R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE; |
| 1626 | |
| 1627 | case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: |
| 1628 | case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: |
| 1629 | return R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE; |
| 1630 | |
| 1631 | case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: |
| 1632 | case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: |
| 1633 | return R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE; |
| 1634 | |
| 1635 | case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: |
| 1636 | case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: |
| 1637 | return R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE; |
| 1638 | } |
| 1639 | return r_type; |
| 1640 | } |
| 1641 | |
| 1642 | static int |
| 1643 | tilegx_elf_tls_transition (struct bfd_link_info *info, int r_type, |
| 1644 | int is_local, bfd_boolean disable_le_transition) |
| 1645 | { |
| 1646 | if (info->shared) |
| 1647 | return r_type; |
| 1648 | |
| 1649 | if (is_local && !disable_le_transition) |
| 1650 | return tilegx_tls_translate_to_le (r_type); |
| 1651 | else |
| 1652 | return tilegx_tls_translate_to_ie (r_type); |
| 1653 | } |
| 1654 | |
| 1655 | /* Look through the relocs for a section during the first phase, and |
| 1656 | allocate space in the global offset table or procedure linkage |
| 1657 | table. */ |
| 1658 | |
| 1659 | bfd_boolean |
| 1660 | tilegx_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
| 1661 | asection *sec, const Elf_Internal_Rela *relocs) |
| 1662 | { |
| 1663 | struct tilegx_elf_link_hash_table *htab; |
| 1664 | Elf_Internal_Shdr *symtab_hdr; |
| 1665 | struct elf_link_hash_entry **sym_hashes; |
| 1666 | const Elf_Internal_Rela *rel; |
| 1667 | const Elf_Internal_Rela *rel_end; |
| 1668 | asection *sreloc; |
| 1669 | int num_relocs; |
| 1670 | bfd_boolean has_tls_gd_or_ie = FALSE, has_tls_add = FALSE; |
| 1671 | |
| 1672 | if (info->relocatable) |
| 1673 | return TRUE; |
| 1674 | |
| 1675 | htab = tilegx_elf_hash_table (info); |
| 1676 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 1677 | sym_hashes = elf_sym_hashes (abfd); |
| 1678 | |
| 1679 | sreloc = NULL; |
| 1680 | |
| 1681 | num_relocs = sec->reloc_count; |
| 1682 | |
| 1683 | BFD_ASSERT (is_tilegx_elf (abfd) || num_relocs == 0); |
| 1684 | |
| 1685 | if (htab->elf.dynobj == NULL) |
| 1686 | htab->elf.dynobj = abfd; |
| 1687 | |
| 1688 | rel_end = relocs + num_relocs; |
| 1689 | |
| 1690 | /* Check whether to do optimization to transform TLS GD/IE |
| 1691 | referehces to TLS LE. We disable it if we're linking with old |
| 1692 | TLS code sequences that do not support such optimization. Old |
| 1693 | TLS code sequences have tls_gd_call/tls_ie_load relocations but |
| 1694 | no tls_add relocations. */ |
| 1695 | for (rel = relocs; rel < rel_end && !has_tls_add; rel++) |
| 1696 | { |
| 1697 | int r_type = TILEGX_ELF_R_TYPE (rel->r_info); |
| 1698 | switch (r_type) |
| 1699 | { |
| 1700 | case R_TILEGX_TLS_GD_CALL: |
| 1701 | case R_TILEGX_TLS_IE_LOAD: |
| 1702 | has_tls_gd_or_ie = TRUE; |
| 1703 | break; |
| 1704 | case R_TILEGX_IMM8_X0_TLS_ADD: |
| 1705 | case R_TILEGX_IMM8_Y0_TLS_ADD: |
| 1706 | case R_TILEGX_IMM8_X1_TLS_ADD: |
| 1707 | case R_TILEGX_IMM8_Y1_TLS_ADD: |
| 1708 | has_tls_add = TRUE; |
| 1709 | break; |
| 1710 | } |
| 1711 | } |
| 1712 | |
| 1713 | sec->sec_flg0 = (has_tls_gd_or_ie && !has_tls_add); |
| 1714 | htab->disable_le_transition |= sec->sec_flg0; |
| 1715 | |
| 1716 | for (rel = relocs; rel < rel_end; rel++) |
| 1717 | { |
| 1718 | unsigned int r_type; |
| 1719 | unsigned long r_symndx; |
| 1720 | struct elf_link_hash_entry *h; |
| 1721 | int tls_type; |
| 1722 | |
| 1723 | r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info); |
| 1724 | r_type = TILEGX_ELF_R_TYPE (rel->r_info); |
| 1725 | |
| 1726 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
| 1727 | { |
| 1728 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), |
| 1729 | abfd, r_symndx); |
| 1730 | return FALSE; |
| 1731 | } |
| 1732 | |
| 1733 | if (r_symndx < symtab_hdr->sh_info) |
| 1734 | h = NULL; |
| 1735 | else |
| 1736 | { |
| 1737 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 1738 | while (h->root.type == bfd_link_hash_indirect |
| 1739 | || h->root.type == bfd_link_hash_warning) |
| 1740 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 1741 | |
| 1742 | /* PR15323, ref flags aren't set for references in the same |
| 1743 | object. */ |
| 1744 | h->root.non_ir_ref = 1; |
| 1745 | } |
| 1746 | |
| 1747 | r_type = tilegx_elf_tls_transition (info, r_type, h == NULL, |
| 1748 | sec->sec_flg0); |
| 1749 | switch (r_type) |
| 1750 | { |
| 1751 | case R_TILEGX_IMM16_X0_HW0_TLS_LE: |
| 1752 | case R_TILEGX_IMM16_X1_HW0_TLS_LE: |
| 1753 | case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE: |
| 1754 | case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE: |
| 1755 | case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE: |
| 1756 | case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE: |
| 1757 | if (info->shared) |
| 1758 | goto r_tilegx_plt32; |
| 1759 | break; |
| 1760 | |
| 1761 | case R_TILEGX_IMM16_X0_HW0_TLS_GD: |
| 1762 | case R_TILEGX_IMM16_X1_HW0_TLS_GD: |
| 1763 | case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: |
| 1764 | case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: |
| 1765 | case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: |
| 1766 | case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: |
| 1767 | BFD_ASSERT (info->shared); |
| 1768 | tls_type = GOT_TLS_GD; |
| 1769 | goto have_got_reference; |
| 1770 | |
| 1771 | case R_TILEGX_IMM16_X0_HW0_TLS_IE: |
| 1772 | case R_TILEGX_IMM16_X1_HW0_TLS_IE: |
| 1773 | case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: |
| 1774 | case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: |
| 1775 | case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: |
| 1776 | case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: |
| 1777 | tls_type = GOT_TLS_IE; |
| 1778 | if (info->shared) |
| 1779 | info->flags |= DF_STATIC_TLS; |
| 1780 | goto have_got_reference; |
| 1781 | |
| 1782 | case R_TILEGX_IMM16_X0_HW0_GOT: |
| 1783 | case R_TILEGX_IMM16_X1_HW0_GOT: |
| 1784 | case R_TILEGX_IMM16_X0_HW0_LAST_GOT: |
| 1785 | case R_TILEGX_IMM16_X1_HW0_LAST_GOT: |
| 1786 | case R_TILEGX_IMM16_X0_HW1_LAST_GOT: |
| 1787 | case R_TILEGX_IMM16_X1_HW1_LAST_GOT: |
| 1788 | tls_type = GOT_NORMAL; |
| 1789 | /* Fall Through */ |
| 1790 | |
| 1791 | have_got_reference: |
| 1792 | /* This symbol requires a global offset table entry. */ |
| 1793 | { |
| 1794 | int old_tls_type; |
| 1795 | |
| 1796 | if (h != NULL) |
| 1797 | { |
| 1798 | h->got.refcount += 1; |
| 1799 | old_tls_type = tilegx_elf_hash_entry(h)->tls_type; |
| 1800 | } |
| 1801 | else |
| 1802 | { |
| 1803 | bfd_signed_vma *local_got_refcounts; |
| 1804 | |
| 1805 | /* This is a global offset table entry for a local symbol. */ |
| 1806 | local_got_refcounts = elf_local_got_refcounts (abfd); |
| 1807 | if (local_got_refcounts == NULL) |
| 1808 | { |
| 1809 | bfd_size_type size; |
| 1810 | |
| 1811 | size = symtab_hdr->sh_info; |
| 1812 | size *= (sizeof (bfd_signed_vma) + sizeof(char)); |
| 1813 | local_got_refcounts = ((bfd_signed_vma *) |
| 1814 | bfd_zalloc (abfd, size)); |
| 1815 | if (local_got_refcounts == NULL) |
| 1816 | return FALSE; |
| 1817 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
| 1818 | _bfd_tilegx_elf_local_got_tls_type (abfd) |
| 1819 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); |
| 1820 | } |
| 1821 | local_got_refcounts[r_symndx] += 1; |
| 1822 | old_tls_type = _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx]; |
| 1823 | } |
| 1824 | |
| 1825 | /* If a TLS symbol is accessed using IE at least once, |
| 1826 | there is no point to use dynamic model for it. */ |
| 1827 | if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN |
| 1828 | && (old_tls_type != GOT_TLS_GD |
| 1829 | || tls_type != GOT_TLS_IE)) |
| 1830 | { |
| 1831 | if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD) |
| 1832 | tls_type = old_tls_type; |
| 1833 | else |
| 1834 | { |
| 1835 | (*_bfd_error_handler) |
| 1836 | (_("%B: `%s' accessed both as normal and thread local symbol"), |
| 1837 | abfd, h ? h->root.root.string : "<local>"); |
| 1838 | return FALSE; |
| 1839 | } |
| 1840 | } |
| 1841 | |
| 1842 | if (old_tls_type != tls_type) |
| 1843 | { |
| 1844 | if (h != NULL) |
| 1845 | tilegx_elf_hash_entry (h)->tls_type = tls_type; |
| 1846 | else |
| 1847 | _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx] = tls_type; |
| 1848 | } |
| 1849 | } |
| 1850 | |
| 1851 | if (htab->elf.sgot == NULL) |
| 1852 | { |
| 1853 | if (!tilegx_elf_create_got_section (htab->elf.dynobj, info)) |
| 1854 | return FALSE; |
| 1855 | } |
| 1856 | break; |
| 1857 | |
| 1858 | case R_TILEGX_TLS_GD_CALL: |
| 1859 | if (info->shared) |
| 1860 | { |
| 1861 | /* These are basically R_TILEGX_JUMPOFF_X1_PLT relocs |
| 1862 | against __tls_get_addr. */ |
| 1863 | struct bfd_link_hash_entry *bh = NULL; |
| 1864 | if (! _bfd_generic_link_add_one_symbol (info, abfd, |
| 1865 | "__tls_get_addr", 0, |
| 1866 | bfd_und_section_ptr, 0, |
| 1867 | NULL, FALSE, FALSE, |
| 1868 | &bh)) |
| 1869 | return FALSE; |
| 1870 | h = (struct elf_link_hash_entry *) bh; |
| 1871 | } |
| 1872 | else |
| 1873 | break; |
| 1874 | /* Fall through */ |
| 1875 | |
| 1876 | case R_TILEGX_JUMPOFF_X1_PLT: |
| 1877 | case R_TILEGX_IMM16_X0_HW0_PLT_PCREL: |
| 1878 | case R_TILEGX_IMM16_X1_HW0_PLT_PCREL: |
| 1879 | case R_TILEGX_IMM16_X0_HW1_PLT_PCREL: |
| 1880 | case R_TILEGX_IMM16_X1_HW1_PLT_PCREL: |
| 1881 | case R_TILEGX_IMM16_X0_HW2_PLT_PCREL: |
| 1882 | case R_TILEGX_IMM16_X1_HW2_PLT_PCREL: |
| 1883 | case R_TILEGX_IMM16_X0_HW3_PLT_PCREL: |
| 1884 | case R_TILEGX_IMM16_X1_HW3_PLT_PCREL: |
| 1885 | case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL: |
| 1886 | case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL: |
| 1887 | case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL: |
| 1888 | case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL: |
| 1889 | case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL: |
| 1890 | case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL: |
| 1891 | /* This symbol requires a procedure linkage table entry. We |
| 1892 | actually build the entry in adjust_dynamic_symbol, |
| 1893 | because this might be a case of linking PIC code without |
| 1894 | linking in any dynamic objects, in which case we don't |
| 1895 | need to generate a procedure linkage table after all. */ |
| 1896 | |
| 1897 | if (h != NULL) |
| 1898 | { |
| 1899 | h->needs_plt = 1; |
| 1900 | h->plt.refcount += 1; |
| 1901 | } |
| 1902 | break; |
| 1903 | |
| 1904 | case R_TILEGX_64_PCREL: |
| 1905 | case R_TILEGX_32_PCREL: |
| 1906 | case R_TILEGX_16_PCREL: |
| 1907 | case R_TILEGX_8_PCREL: |
| 1908 | case R_TILEGX_IMM16_X0_HW0_PCREL: |
| 1909 | case R_TILEGX_IMM16_X1_HW0_PCREL: |
| 1910 | case R_TILEGX_IMM16_X0_HW1_PCREL: |
| 1911 | case R_TILEGX_IMM16_X1_HW1_PCREL: |
| 1912 | case R_TILEGX_IMM16_X0_HW2_PCREL: |
| 1913 | case R_TILEGX_IMM16_X1_HW2_PCREL: |
| 1914 | case R_TILEGX_IMM16_X0_HW3_PCREL: |
| 1915 | case R_TILEGX_IMM16_X1_HW3_PCREL: |
| 1916 | case R_TILEGX_IMM16_X0_HW0_LAST_PCREL: |
| 1917 | case R_TILEGX_IMM16_X1_HW0_LAST_PCREL: |
| 1918 | case R_TILEGX_IMM16_X0_HW1_LAST_PCREL: |
| 1919 | case R_TILEGX_IMM16_X1_HW1_LAST_PCREL: |
| 1920 | case R_TILEGX_IMM16_X0_HW2_LAST_PCREL: |
| 1921 | case R_TILEGX_IMM16_X1_HW2_LAST_PCREL: |
| 1922 | if (h != NULL) |
| 1923 | h->non_got_ref = 1; |
| 1924 | |
| 1925 | if (h != NULL |
| 1926 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
| 1927 | break; |
| 1928 | /* Fall through. */ |
| 1929 | |
| 1930 | case R_TILEGX_64: |
| 1931 | case R_TILEGX_32: |
| 1932 | case R_TILEGX_16: |
| 1933 | case R_TILEGX_8: |
| 1934 | case R_TILEGX_HW0: |
| 1935 | case R_TILEGX_HW1: |
| 1936 | case R_TILEGX_HW2: |
| 1937 | case R_TILEGX_HW3: |
| 1938 | case R_TILEGX_HW0_LAST: |
| 1939 | case R_TILEGX_HW1_LAST: |
| 1940 | case R_TILEGX_HW2_LAST: |
| 1941 | case R_TILEGX_COPY: |
| 1942 | case R_TILEGX_GLOB_DAT: |
| 1943 | case R_TILEGX_JMP_SLOT: |
| 1944 | case R_TILEGX_RELATIVE: |
| 1945 | case R_TILEGX_BROFF_X1: |
| 1946 | case R_TILEGX_JUMPOFF_X1: |
| 1947 | case R_TILEGX_IMM8_X0: |
| 1948 | case R_TILEGX_IMM8_Y0: |
| 1949 | case R_TILEGX_IMM8_X1: |
| 1950 | case R_TILEGX_IMM8_Y1: |
| 1951 | case R_TILEGX_DEST_IMM8_X1: |
| 1952 | case R_TILEGX_MT_IMM14_X1: |
| 1953 | case R_TILEGX_MF_IMM14_X1: |
| 1954 | case R_TILEGX_MMSTART_X0: |
| 1955 | case R_TILEGX_MMEND_X0: |
| 1956 | case R_TILEGX_SHAMT_X0: |
| 1957 | case R_TILEGX_SHAMT_X1: |
| 1958 | case R_TILEGX_SHAMT_Y0: |
| 1959 | case R_TILEGX_SHAMT_Y1: |
| 1960 | case R_TILEGX_IMM16_X0_HW0: |
| 1961 | case R_TILEGX_IMM16_X1_HW0: |
| 1962 | case R_TILEGX_IMM16_X0_HW1: |
| 1963 | case R_TILEGX_IMM16_X1_HW1: |
| 1964 | case R_TILEGX_IMM16_X0_HW2: |
| 1965 | case R_TILEGX_IMM16_X1_HW2: |
| 1966 | case R_TILEGX_IMM16_X0_HW3: |
| 1967 | case R_TILEGX_IMM16_X1_HW3: |
| 1968 | case R_TILEGX_IMM16_X0_HW0_LAST: |
| 1969 | case R_TILEGX_IMM16_X1_HW0_LAST: |
| 1970 | case R_TILEGX_IMM16_X0_HW1_LAST: |
| 1971 | case R_TILEGX_IMM16_X1_HW1_LAST: |
| 1972 | case R_TILEGX_IMM16_X0_HW2_LAST: |
| 1973 | case R_TILEGX_IMM16_X1_HW2_LAST: |
| 1974 | if (h != NULL) |
| 1975 | h->non_got_ref = 1; |
| 1976 | |
| 1977 | r_tilegx_plt32: |
| 1978 | if (h != NULL && !info->shared) |
| 1979 | { |
| 1980 | /* We may need a .plt entry if the function this reloc |
| 1981 | refers to is in a shared lib. */ |
| 1982 | h->plt.refcount += 1; |
| 1983 | } |
| 1984 | |
| 1985 | /* If we are creating a shared library, and this is a reloc |
| 1986 | against a global symbol, or a non PC relative reloc |
| 1987 | against a local symbol, then we need to copy the reloc |
| 1988 | into the shared library. However, if we are linking with |
| 1989 | -Bsymbolic, we do not need to copy a reloc against a |
| 1990 | global symbol which is defined in an object we are |
| 1991 | including in the link (i.e., DEF_REGULAR is set). At |
| 1992 | this point we have not seen all the input files, so it is |
| 1993 | possible that DEF_REGULAR is not set now but will be set |
| 1994 | later (it is never cleared). In case of a weak definition, |
| 1995 | DEF_REGULAR may be cleared later by a strong definition in |
| 1996 | a shared library. We account for that possibility below by |
| 1997 | storing information in the relocs_copied field of the hash |
| 1998 | table entry. A similar situation occurs when creating |
| 1999 | shared libraries and symbol visibility changes render the |
| 2000 | symbol local. |
| 2001 | |
| 2002 | If on the other hand, we are creating an executable, we |
| 2003 | may need to keep relocations for symbols satisfied by a |
| 2004 | dynamic library if we manage to avoid copy relocs for the |
| 2005 | symbol. */ |
| 2006 | if ((info->shared |
| 2007 | && (sec->flags & SEC_ALLOC) != 0 |
| 2008 | && (! tilegx_elf_howto_table[r_type].pc_relative |
| 2009 | || (h != NULL |
| 2010 | && (! info->symbolic |
| 2011 | || h->root.type == bfd_link_hash_defweak |
| 2012 | || !h->def_regular)))) |
| 2013 | || (!info->shared |
| 2014 | && (sec->flags & SEC_ALLOC) != 0 |
| 2015 | && h != NULL |
| 2016 | && (h->root.type == bfd_link_hash_defweak |
| 2017 | || !h->def_regular))) |
| 2018 | { |
| 2019 | struct tilegx_elf_dyn_relocs *p; |
| 2020 | struct tilegx_elf_dyn_relocs **head; |
| 2021 | |
| 2022 | /* When creating a shared object, we must copy these |
| 2023 | relocs into the output file. We create a reloc |
| 2024 | section in dynobj and make room for the reloc. */ |
| 2025 | if (sreloc == NULL) |
| 2026 | { |
| 2027 | sreloc = _bfd_elf_make_dynamic_reloc_section |
| 2028 | (sec, htab->elf.dynobj, htab->word_align_power, abfd, |
| 2029 | /*rela?*/ TRUE); |
| 2030 | |
| 2031 | if (sreloc == NULL) |
| 2032 | return FALSE; |
| 2033 | } |
| 2034 | |
| 2035 | /* If this is a global symbol, we count the number of |
| 2036 | relocations we need for this symbol. */ |
| 2037 | if (h != NULL) |
| 2038 | head = |
| 2039 | &((struct tilegx_elf_link_hash_entry *) h)->dyn_relocs; |
| 2040 | else |
| 2041 | { |
| 2042 | /* Track dynamic relocs needed for local syms too. |
| 2043 | We really need local syms available to do this |
| 2044 | easily. Oh well. */ |
| 2045 | |
| 2046 | asection *s; |
| 2047 | void *vpp; |
| 2048 | Elf_Internal_Sym *isym; |
| 2049 | |
| 2050 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
| 2051 | abfd, r_symndx); |
| 2052 | if (isym == NULL) |
| 2053 | return FALSE; |
| 2054 | |
| 2055 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 2056 | if (s == NULL) |
| 2057 | s = sec; |
| 2058 | |
| 2059 | vpp = &elf_section_data (s)->local_dynrel; |
| 2060 | head = (struct tilegx_elf_dyn_relocs **) vpp; |
| 2061 | } |
| 2062 | |
| 2063 | p = *head; |
| 2064 | if (p == NULL || p->sec != sec) |
| 2065 | { |
| 2066 | bfd_size_type amt = sizeof *p; |
| 2067 | p = ((struct tilegx_elf_dyn_relocs *) |
| 2068 | bfd_alloc (htab->elf.dynobj, amt)); |
| 2069 | if (p == NULL) |
| 2070 | return FALSE; |
| 2071 | p->next = *head; |
| 2072 | *head = p; |
| 2073 | p->sec = sec; |
| 2074 | p->count = 0; |
| 2075 | p->pc_count = 0; |
| 2076 | } |
| 2077 | |
| 2078 | p->count += 1; |
| 2079 | if (tilegx_elf_howto_table[r_type].pc_relative) |
| 2080 | p->pc_count += 1; |
| 2081 | } |
| 2082 | |
| 2083 | break; |
| 2084 | |
| 2085 | case R_TILEGX_GNU_VTINHERIT: |
| 2086 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| 2087 | return FALSE; |
| 2088 | break; |
| 2089 | |
| 2090 | case R_TILEGX_GNU_VTENTRY: |
| 2091 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
| 2092 | return FALSE; |
| 2093 | break; |
| 2094 | |
| 2095 | default: |
| 2096 | break; |
| 2097 | } |
| 2098 | } |
| 2099 | |
| 2100 | return TRUE; |
| 2101 | } |
| 2102 | |
| 2103 | \f |
| 2104 | asection * |
| 2105 | tilegx_elf_gc_mark_hook (asection *sec, |
| 2106 | struct bfd_link_info *info, |
| 2107 | Elf_Internal_Rela *rel, |
| 2108 | struct elf_link_hash_entry *h, |
| 2109 | Elf_Internal_Sym *sym) |
| 2110 | { |
| 2111 | if (h != NULL) |
| 2112 | { |
| 2113 | switch (TILEGX_ELF_R_TYPE (rel->r_info)) |
| 2114 | { |
| 2115 | case R_TILEGX_GNU_VTINHERIT: |
| 2116 | case R_TILEGX_GNU_VTENTRY: |
| 2117 | return NULL; |
| 2118 | } |
| 2119 | } |
| 2120 | |
| 2121 | /* FIXME: The test here, in check_relocs and in relocate_section |
| 2122 | dealing with TLS optimization, ought to be !info->executable. */ |
| 2123 | if (info->shared) |
| 2124 | { |
| 2125 | switch (TILEGX_ELF_R_TYPE (rel->r_info)) |
| 2126 | { |
| 2127 | case R_TILEGX_TLS_GD_CALL: |
| 2128 | /* This reloc implicitly references __tls_get_addr. We know |
| 2129 | another reloc will reference the same symbol as the one |
| 2130 | on this reloc, so the real symbol and section will be |
| 2131 | gc marked when processing the other reloc. That lets |
| 2132 | us handle __tls_get_addr here. */ |
| 2133 | h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr", |
| 2134 | FALSE, FALSE, TRUE); |
| 2135 | BFD_ASSERT (h != NULL); |
| 2136 | h->mark = 1; |
| 2137 | if (h->u.weakdef != NULL) |
| 2138 | h->u.weakdef->mark = 1; |
| 2139 | sym = NULL; |
| 2140 | } |
| 2141 | } |
| 2142 | |
| 2143 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
| 2144 | } |
| 2145 | |
| 2146 | /* Update the got entry reference counts for the section being removed. */ |
| 2147 | bfd_boolean |
| 2148 | tilegx_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
| 2149 | asection *sec, const Elf_Internal_Rela *relocs) |
| 2150 | { |
| 2151 | struct tilegx_elf_link_hash_table *htab; |
| 2152 | Elf_Internal_Shdr *symtab_hdr; |
| 2153 | struct elf_link_hash_entry **sym_hashes; |
| 2154 | bfd_signed_vma *local_got_refcounts; |
| 2155 | const Elf_Internal_Rela *rel, *relend; |
| 2156 | |
| 2157 | if (info->relocatable) |
| 2158 | return TRUE; |
| 2159 | |
| 2160 | BFD_ASSERT (is_tilegx_elf (abfd) || sec->reloc_count == 0); |
| 2161 | |
| 2162 | elf_section_data (sec)->local_dynrel = NULL; |
| 2163 | |
| 2164 | htab = tilegx_elf_hash_table (info); |
| 2165 | BFD_ASSERT (htab != NULL); |
| 2166 | symtab_hdr = &elf_symtab_hdr (abfd); |
| 2167 | sym_hashes = elf_sym_hashes (abfd); |
| 2168 | local_got_refcounts = elf_local_got_refcounts (abfd); |
| 2169 | |
| 2170 | relend = relocs + sec->reloc_count; |
| 2171 | for (rel = relocs; rel < relend; rel++) |
| 2172 | { |
| 2173 | unsigned long r_symndx; |
| 2174 | unsigned int r_type; |
| 2175 | struct elf_link_hash_entry *h = NULL; |
| 2176 | |
| 2177 | r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info); |
| 2178 | if (r_symndx >= symtab_hdr->sh_info) |
| 2179 | { |
| 2180 | struct tilegx_elf_link_hash_entry *eh; |
| 2181 | struct tilegx_elf_dyn_relocs **pp; |
| 2182 | struct tilegx_elf_dyn_relocs *p; |
| 2183 | |
| 2184 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 2185 | while (h->root.type == bfd_link_hash_indirect |
| 2186 | || h->root.type == bfd_link_hash_warning) |
| 2187 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 2188 | eh = (struct tilegx_elf_link_hash_entry *) h; |
| 2189 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
| 2190 | if (p->sec == sec) |
| 2191 | { |
| 2192 | /* Everything must go for SEC. */ |
| 2193 | *pp = p->next; |
| 2194 | break; |
| 2195 | } |
| 2196 | } |
| 2197 | |
| 2198 | r_type = TILEGX_ELF_R_TYPE (rel->r_info); |
| 2199 | r_type = tilegx_elf_tls_transition (info, r_type, h != NULL, |
| 2200 | sec->sec_flg0); |
| 2201 | switch (r_type) |
| 2202 | { |
| 2203 | case R_TILEGX_IMM16_X0_HW0_GOT: |
| 2204 | case R_TILEGX_IMM16_X1_HW0_GOT: |
| 2205 | case R_TILEGX_IMM16_X0_HW0_LAST_GOT: |
| 2206 | case R_TILEGX_IMM16_X1_HW0_LAST_GOT: |
| 2207 | case R_TILEGX_IMM16_X0_HW1_LAST_GOT: |
| 2208 | case R_TILEGX_IMM16_X1_HW1_LAST_GOT: |
| 2209 | case R_TILEGX_IMM16_X0_HW0_TLS_GD: |
| 2210 | case R_TILEGX_IMM16_X1_HW0_TLS_GD: |
| 2211 | case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: |
| 2212 | case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: |
| 2213 | case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: |
| 2214 | case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: |
| 2215 | case R_TILEGX_IMM16_X0_HW0_TLS_IE: |
| 2216 | case R_TILEGX_IMM16_X1_HW0_TLS_IE: |
| 2217 | case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: |
| 2218 | case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: |
| 2219 | case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: |
| 2220 | case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: |
| 2221 | if (h != NULL) |
| 2222 | { |
| 2223 | if (h->got.refcount > 0) |
| 2224 | h->got.refcount--; |
| 2225 | } |
| 2226 | else |
| 2227 | { |
| 2228 | if (local_got_refcounts && |
| 2229 | local_got_refcounts[r_symndx] > 0) |
| 2230 | local_got_refcounts[r_symndx]--; |
| 2231 | } |
| 2232 | break; |
| 2233 | |
| 2234 | case R_TILEGX_64_PCREL: |
| 2235 | case R_TILEGX_32_PCREL: |
| 2236 | case R_TILEGX_16_PCREL: |
| 2237 | case R_TILEGX_8_PCREL: |
| 2238 | case R_TILEGX_IMM16_X0_HW0_PCREL: |
| 2239 | case R_TILEGX_IMM16_X1_HW0_PCREL: |
| 2240 | case R_TILEGX_IMM16_X0_HW1_PCREL: |
| 2241 | case R_TILEGX_IMM16_X1_HW1_PCREL: |
| 2242 | case R_TILEGX_IMM16_X0_HW2_PCREL: |
| 2243 | case R_TILEGX_IMM16_X1_HW2_PCREL: |
| 2244 | case R_TILEGX_IMM16_X0_HW3_PCREL: |
| 2245 | case R_TILEGX_IMM16_X1_HW3_PCREL: |
| 2246 | case R_TILEGX_IMM16_X0_HW0_LAST_PCREL: |
| 2247 | case R_TILEGX_IMM16_X1_HW0_LAST_PCREL: |
| 2248 | case R_TILEGX_IMM16_X0_HW1_LAST_PCREL: |
| 2249 | case R_TILEGX_IMM16_X1_HW1_LAST_PCREL: |
| 2250 | case R_TILEGX_IMM16_X0_HW2_LAST_PCREL: |
| 2251 | case R_TILEGX_IMM16_X1_HW2_LAST_PCREL: |
| 2252 | if (h != NULL |
| 2253 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
| 2254 | break; |
| 2255 | /* Fall through. */ |
| 2256 | |
| 2257 | case R_TILEGX_64: |
| 2258 | case R_TILEGX_32: |
| 2259 | case R_TILEGX_16: |
| 2260 | case R_TILEGX_8: |
| 2261 | case R_TILEGX_HW0: |
| 2262 | case R_TILEGX_HW1: |
| 2263 | case R_TILEGX_HW2: |
| 2264 | case R_TILEGX_HW3: |
| 2265 | case R_TILEGX_HW0_LAST: |
| 2266 | case R_TILEGX_HW1_LAST: |
| 2267 | case R_TILEGX_HW2_LAST: |
| 2268 | case R_TILEGX_COPY: |
| 2269 | case R_TILEGX_GLOB_DAT: |
| 2270 | case R_TILEGX_JMP_SLOT: |
| 2271 | case R_TILEGX_RELATIVE: |
| 2272 | case R_TILEGX_BROFF_X1: |
| 2273 | case R_TILEGX_JUMPOFF_X1: |
| 2274 | case R_TILEGX_IMM8_X0: |
| 2275 | case R_TILEGX_IMM8_Y0: |
| 2276 | case R_TILEGX_IMM8_X1: |
| 2277 | case R_TILEGX_IMM8_Y1: |
| 2278 | case R_TILEGX_DEST_IMM8_X1: |
| 2279 | case R_TILEGX_MT_IMM14_X1: |
| 2280 | case R_TILEGX_MF_IMM14_X1: |
| 2281 | case R_TILEGX_MMSTART_X0: |
| 2282 | case R_TILEGX_MMEND_X0: |
| 2283 | case R_TILEGX_SHAMT_X0: |
| 2284 | case R_TILEGX_SHAMT_X1: |
| 2285 | case R_TILEGX_SHAMT_Y0: |
| 2286 | case R_TILEGX_SHAMT_Y1: |
| 2287 | case R_TILEGX_IMM16_X0_HW0: |
| 2288 | case R_TILEGX_IMM16_X1_HW0: |
| 2289 | case R_TILEGX_IMM16_X0_HW1: |
| 2290 | case R_TILEGX_IMM16_X1_HW1: |
| 2291 | case R_TILEGX_IMM16_X0_HW2: |
| 2292 | case R_TILEGX_IMM16_X1_HW2: |
| 2293 | case R_TILEGX_IMM16_X0_HW3: |
| 2294 | case R_TILEGX_IMM16_X1_HW3: |
| 2295 | case R_TILEGX_IMM16_X0_HW0_LAST: |
| 2296 | case R_TILEGX_IMM16_X1_HW0_LAST: |
| 2297 | case R_TILEGX_IMM16_X0_HW1_LAST: |
| 2298 | case R_TILEGX_IMM16_X1_HW1_LAST: |
| 2299 | case R_TILEGX_IMM16_X0_HW2_LAST: |
| 2300 | case R_TILEGX_IMM16_X1_HW2_LAST: |
| 2301 | if (info->shared) |
| 2302 | break; |
| 2303 | /* Fall through. */ |
| 2304 | |
| 2305 | case R_TILEGX_JUMPOFF_X1_PLT: |
| 2306 | case R_TILEGX_IMM16_X0_HW0_PLT_PCREL: |
| 2307 | case R_TILEGX_IMM16_X1_HW0_PLT_PCREL: |
| 2308 | case R_TILEGX_IMM16_X0_HW1_PLT_PCREL: |
| 2309 | case R_TILEGX_IMM16_X1_HW1_PLT_PCREL: |
| 2310 | case R_TILEGX_IMM16_X0_HW2_PLT_PCREL: |
| 2311 | case R_TILEGX_IMM16_X1_HW2_PLT_PCREL: |
| 2312 | case R_TILEGX_IMM16_X0_HW3_PLT_PCREL: |
| 2313 | case R_TILEGX_IMM16_X1_HW3_PLT_PCREL: |
| 2314 | case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL: |
| 2315 | case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL: |
| 2316 | case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL: |
| 2317 | case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL: |
| 2318 | case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL: |
| 2319 | case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL: |
| 2320 | if (h != NULL) |
| 2321 | { |
| 2322 | if (h->plt.refcount > 0) |
| 2323 | h->plt.refcount--; |
| 2324 | } |
| 2325 | break; |
| 2326 | |
| 2327 | default: |
| 2328 | break; |
| 2329 | } |
| 2330 | } |
| 2331 | |
| 2332 | return TRUE; |
| 2333 | } |
| 2334 | |
| 2335 | /* Adjust a symbol defined by a dynamic object and referenced by a |
| 2336 | regular object. The current definition is in some section of the |
| 2337 | dynamic object, but we're not including those sections. We have to |
| 2338 | change the definition to something the rest of the link can |
| 2339 | understand. */ |
| 2340 | |
| 2341 | bfd_boolean |
| 2342 | tilegx_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
| 2343 | struct elf_link_hash_entry *h) |
| 2344 | { |
| 2345 | struct tilegx_elf_link_hash_table *htab; |
| 2346 | struct tilegx_elf_link_hash_entry * eh; |
| 2347 | struct tilegx_elf_dyn_relocs *p; |
| 2348 | bfd *dynobj; |
| 2349 | asection *s; |
| 2350 | |
| 2351 | htab = tilegx_elf_hash_table (info); |
| 2352 | BFD_ASSERT (htab != NULL); |
| 2353 | |
| 2354 | dynobj = htab->elf.dynobj; |
| 2355 | |
| 2356 | /* Make sure we know what is going on here. */ |
| 2357 | BFD_ASSERT (dynobj != NULL |
| 2358 | && (h->needs_plt |
| 2359 | || h->u.weakdef != NULL |
| 2360 | || (h->def_dynamic |
| 2361 | && h->ref_regular |
| 2362 | && !h->def_regular))); |
| 2363 | |
| 2364 | /* If this is a function, put it in the procedure linkage table. We |
| 2365 | will fill in the contents of the procedure linkage table later |
| 2366 | (although we could actually do it here). */ |
| 2367 | if (h->type == STT_FUNC || h->needs_plt) |
| 2368 | { |
| 2369 | if (h->plt.refcount <= 0 |
| 2370 | || SYMBOL_CALLS_LOCAL (info, h) |
| 2371 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
| 2372 | && h->root.type == bfd_link_hash_undefweak)) |
| 2373 | { |
| 2374 | /* This case can occur if we saw a R_TILEGX_JUMPOFF_X1_PLT |
| 2375 | reloc in an input file, but the symbol was never referred |
| 2376 | to by a dynamic object, or if all references were garbage |
| 2377 | collected. In such a case, we don't actually need to build |
| 2378 | a procedure linkage table, and we can just do a |
| 2379 | R_TILEGX_JUMPOFF_X1 relocation instead. */ |
| 2380 | h->plt.offset = (bfd_vma) -1; |
| 2381 | h->needs_plt = 0; |
| 2382 | } |
| 2383 | |
| 2384 | return TRUE; |
| 2385 | } |
| 2386 | else |
| 2387 | h->plt.offset = (bfd_vma) -1; |
| 2388 | |
| 2389 | /* If this is a weak symbol, and there is a real definition, the |
| 2390 | processor independent code will have arranged for us to see the |
| 2391 | real definition first, and we can just use the same value. */ |
| 2392 | if (h->u.weakdef != NULL) |
| 2393 | { |
| 2394 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
| 2395 | || h->u.weakdef->root.type == bfd_link_hash_defweak); |
| 2396 | h->root.u.def.section = h->u.weakdef->root.u.def.section; |
| 2397 | h->root.u.def.value = h->u.weakdef->root.u.def.value; |
| 2398 | return TRUE; |
| 2399 | } |
| 2400 | |
| 2401 | /* This is a reference to a symbol defined by a dynamic object which |
| 2402 | is not a function. */ |
| 2403 | |
| 2404 | /* If we are creating a shared library, we must presume that the |
| 2405 | only references to the symbol are via the global offset table. |
| 2406 | For such cases we need not do anything here; the relocations will |
| 2407 | be handled correctly by relocate_section. */ |
| 2408 | if (info->shared) |
| 2409 | return TRUE; |
| 2410 | |
| 2411 | /* If there are no references to this symbol that do not use the |
| 2412 | GOT, we don't need to generate a copy reloc. */ |
| 2413 | if (!h->non_got_ref) |
| 2414 | return TRUE; |
| 2415 | |
| 2416 | /* If -z nocopyreloc was given, we won't generate them either. */ |
| 2417 | if (info->nocopyreloc) |
| 2418 | { |
| 2419 | h->non_got_ref = 0; |
| 2420 | return TRUE; |
| 2421 | } |
| 2422 | |
| 2423 | eh = (struct tilegx_elf_link_hash_entry *) h; |
| 2424 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 2425 | { |
| 2426 | s = p->sec->output_section; |
| 2427 | if (s != NULL && (s->flags & SEC_READONLY) != 0) |
| 2428 | break; |
| 2429 | } |
| 2430 | |
| 2431 | /* If we didn't find any dynamic relocs in read-only sections, then |
| 2432 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
| 2433 | if (p == NULL) |
| 2434 | { |
| 2435 | h->non_got_ref = 0; |
| 2436 | return TRUE; |
| 2437 | } |
| 2438 | |
| 2439 | /* We must allocate the symbol in our .dynbss section, which will |
| 2440 | become part of the .bss section of the executable. There will be |
| 2441 | an entry for this symbol in the .dynsym section. The dynamic |
| 2442 | object will contain position independent code, so all references |
| 2443 | from the dynamic object to this symbol will go through the global |
| 2444 | offset table. The dynamic linker will use the .dynsym entry to |
| 2445 | determine the address it must put in the global offset table, so |
| 2446 | both the dynamic object and the regular object will refer to the |
| 2447 | same memory location for the variable. */ |
| 2448 | |
| 2449 | /* We must generate a R_TILEGX_COPY reloc to tell the dynamic linker |
| 2450 | to copy the initial value out of the dynamic object and into the |
| 2451 | runtime process image. We need to remember the offset into the |
| 2452 | .rel.bss section we are going to use. */ |
| 2453 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
| 2454 | { |
| 2455 | htab->srelbss->size += TILEGX_ELF_RELA_BYTES (htab); |
| 2456 | h->needs_copy = 1; |
| 2457 | } |
| 2458 | |
| 2459 | return _bfd_elf_adjust_dynamic_copy (h, htab->sdynbss); |
| 2460 | } |
| 2461 | |
| 2462 | /* Allocate space in .plt, .got and associated reloc sections for |
| 2463 | dynamic relocs. */ |
| 2464 | |
| 2465 | static bfd_boolean |
| 2466 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
| 2467 | { |
| 2468 | struct bfd_link_info *info; |
| 2469 | struct tilegx_elf_link_hash_table *htab; |
| 2470 | struct tilegx_elf_link_hash_entry *eh; |
| 2471 | struct tilegx_elf_dyn_relocs *p; |
| 2472 | |
| 2473 | if (h->root.type == bfd_link_hash_indirect) |
| 2474 | return TRUE; |
| 2475 | |
| 2476 | info = (struct bfd_link_info *) inf; |
| 2477 | htab = tilegx_elf_hash_table (info); |
| 2478 | BFD_ASSERT (htab != NULL); |
| 2479 | |
| 2480 | if (htab->elf.dynamic_sections_created |
| 2481 | && h->plt.refcount > 0) |
| 2482 | { |
| 2483 | /* Make sure this symbol is output as a dynamic symbol. |
| 2484 | Undefined weak syms won't yet be marked as dynamic. */ |
| 2485 | if (h->dynindx == -1 |
| 2486 | && !h->forced_local) |
| 2487 | { |
| 2488 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2489 | return FALSE; |
| 2490 | } |
| 2491 | |
| 2492 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
| 2493 | { |
| 2494 | asection *s = htab->elf.splt; |
| 2495 | |
| 2496 | /* Allocate room for the header and tail. */ |
| 2497 | if (s->size == 0) |
| 2498 | { |
| 2499 | s->size = PLT_ENTRY_SIZE; |
| 2500 | } |
| 2501 | |
| 2502 | h->plt.offset = s->size - PLT_ENTRY_SIZE + PLT_HEADER_SIZE; |
| 2503 | |
| 2504 | /* If this symbol is not defined in a regular file, and we are |
| 2505 | not generating a shared library, then set the symbol to this |
| 2506 | location in the .plt. This is required to make function |
| 2507 | pointers compare as equal between the normal executable and |
| 2508 | the shared library. */ |
| 2509 | if (! info->shared |
| 2510 | && !h->def_regular) |
| 2511 | { |
| 2512 | h->root.u.def.section = s; |
| 2513 | h->root.u.def.value = h->plt.offset; |
| 2514 | } |
| 2515 | |
| 2516 | /* Make room for this entry. */ |
| 2517 | s->size += PLT_ENTRY_SIZE; |
| 2518 | |
| 2519 | /* We also need to make an entry in the .got.plt section. */ |
| 2520 | htab->elf.sgotplt->size += GOT_ENTRY_SIZE (htab); |
| 2521 | |
| 2522 | /* We also need to make an entry in the .rela.plt section. */ |
| 2523 | htab->elf.srelplt->size += TILEGX_ELF_RELA_BYTES (htab); |
| 2524 | } |
| 2525 | else |
| 2526 | { |
| 2527 | h->plt.offset = (bfd_vma) -1; |
| 2528 | h->needs_plt = 0; |
| 2529 | } |
| 2530 | } |
| 2531 | else |
| 2532 | { |
| 2533 | h->plt.offset = (bfd_vma) -1; |
| 2534 | h->needs_plt = 0; |
| 2535 | } |
| 2536 | |
| 2537 | /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE |
| 2538 | requiring no TLS entry. */ |
| 2539 | if (h->got.refcount > 0 |
| 2540 | && !htab->disable_le_transition |
| 2541 | && !info->shared |
| 2542 | && h->dynindx == -1 |
| 2543 | && tilegx_elf_hash_entry(h)->tls_type == GOT_TLS_IE) |
| 2544 | h->got.offset = (bfd_vma) -1; |
| 2545 | else if (h->got.refcount > 0) |
| 2546 | { |
| 2547 | asection *s; |
| 2548 | bfd_boolean dyn; |
| 2549 | int tls_type = tilegx_elf_hash_entry(h)->tls_type; |
| 2550 | |
| 2551 | /* Make sure this symbol is output as a dynamic symbol. |
| 2552 | Undefined weak syms won't yet be marked as dynamic. */ |
| 2553 | if (h->dynindx == -1 |
| 2554 | && !h->forced_local) |
| 2555 | { |
| 2556 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2557 | return FALSE; |
| 2558 | } |
| 2559 | |
| 2560 | s = htab->elf.sgot; |
| 2561 | h->got.offset = s->size; |
| 2562 | s->size += TILEGX_ELF_WORD_BYTES (htab); |
| 2563 | /* TLS_GD entries need 2 consecutive GOT slots. */ |
| 2564 | if (tls_type == GOT_TLS_GD) |
| 2565 | s->size += TILEGX_ELF_WORD_BYTES (htab); |
| 2566 | dyn = htab->elf.dynamic_sections_created; |
| 2567 | /* TLS_IE needs one dynamic relocation, |
| 2568 | TLS_GD needs two if local symbol and two if global. */ |
| 2569 | if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE) |
| 2570 | htab->elf.srelgot->size += 2 * TILEGX_ELF_RELA_BYTES (htab); |
| 2571 | else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)) |
| 2572 | htab->elf.srelgot->size += TILEGX_ELF_RELA_BYTES (htab); |
| 2573 | } |
| 2574 | else |
| 2575 | h->got.offset = (bfd_vma) -1; |
| 2576 | |
| 2577 | eh = (struct tilegx_elf_link_hash_entry *) h; |
| 2578 | if (eh->dyn_relocs == NULL) |
| 2579 | return TRUE; |
| 2580 | |
| 2581 | /* In the shared -Bsymbolic case, discard space allocated for |
| 2582 | dynamic pc-relative relocs against symbols which turn out to be |
| 2583 | defined in regular objects. For the normal shared case, discard |
| 2584 | space for pc-relative relocs that have become local due to symbol |
| 2585 | visibility changes. */ |
| 2586 | |
| 2587 | if (info->shared) |
| 2588 | { |
| 2589 | if (SYMBOL_CALLS_LOCAL (info, h)) |
| 2590 | { |
| 2591 | struct tilegx_elf_dyn_relocs **pp; |
| 2592 | |
| 2593 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
| 2594 | { |
| 2595 | p->count -= p->pc_count; |
| 2596 | p->pc_count = 0; |
| 2597 | if (p->count == 0) |
| 2598 | *pp = p->next; |
| 2599 | else |
| 2600 | pp = &p->next; |
| 2601 | } |
| 2602 | } |
| 2603 | |
| 2604 | /* Also discard relocs on undefined weak syms with non-default |
| 2605 | visibility. */ |
| 2606 | if (eh->dyn_relocs != NULL |
| 2607 | && h->root.type == bfd_link_hash_undefweak) |
| 2608 | { |
| 2609 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
| 2610 | eh->dyn_relocs = NULL; |
| 2611 | |
| 2612 | /* Make sure undefined weak symbols are output as a dynamic |
| 2613 | symbol in PIEs. */ |
| 2614 | else if (h->dynindx == -1 |
| 2615 | && !h->forced_local) |
| 2616 | { |
| 2617 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2618 | return FALSE; |
| 2619 | } |
| 2620 | } |
| 2621 | } |
| 2622 | else |
| 2623 | { |
| 2624 | /* For the non-shared case, discard space for relocs against |
| 2625 | symbols which turn out to need copy relocs or are not |
| 2626 | dynamic. */ |
| 2627 | |
| 2628 | if (!h->non_got_ref |
| 2629 | && ((h->def_dynamic |
| 2630 | && !h->def_regular) |
| 2631 | || (htab->elf.dynamic_sections_created |
| 2632 | && (h->root.type == bfd_link_hash_undefweak |
| 2633 | || h->root.type == bfd_link_hash_undefined)))) |
| 2634 | { |
| 2635 | /* Make sure this symbol is output as a dynamic symbol. |
| 2636 | Undefined weak syms won't yet be marked as dynamic. */ |
| 2637 | if (h->dynindx == -1 |
| 2638 | && !h->forced_local) |
| 2639 | { |
| 2640 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2641 | return FALSE; |
| 2642 | } |
| 2643 | |
| 2644 | /* If that succeeded, we know we'll be keeping all the |
| 2645 | relocs. */ |
| 2646 | if (h->dynindx != -1) |
| 2647 | goto keep; |
| 2648 | } |
| 2649 | |
| 2650 | eh->dyn_relocs = NULL; |
| 2651 | |
| 2652 | keep: ; |
| 2653 | } |
| 2654 | |
| 2655 | /* Finally, allocate space. */ |
| 2656 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 2657 | { |
| 2658 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
| 2659 | sreloc->size += p->count * TILEGX_ELF_RELA_BYTES (htab); |
| 2660 | } |
| 2661 | |
| 2662 | return TRUE; |
| 2663 | } |
| 2664 | |
| 2665 | /* Find any dynamic relocs that apply to read-only sections. */ |
| 2666 | |
| 2667 | static bfd_boolean |
| 2668 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
| 2669 | { |
| 2670 | struct tilegx_elf_link_hash_entry *eh; |
| 2671 | struct tilegx_elf_dyn_relocs *p; |
| 2672 | |
| 2673 | eh = (struct tilegx_elf_link_hash_entry *) h; |
| 2674 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 2675 | { |
| 2676 | asection *s = p->sec->output_section; |
| 2677 | |
| 2678 | if (s != NULL && (s->flags & SEC_READONLY) != 0) |
| 2679 | { |
| 2680 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
| 2681 | |
| 2682 | info->flags |= DF_TEXTREL; |
| 2683 | |
| 2684 | /* Not an error, just cut short the traversal. */ |
| 2685 | return FALSE; |
| 2686 | } |
| 2687 | } |
| 2688 | return TRUE; |
| 2689 | } |
| 2690 | |
| 2691 | /* Return true if the dynamic symbol for a given section should be |
| 2692 | omitted when creating a shared library. */ |
| 2693 | |
| 2694 | bfd_boolean |
| 2695 | tilegx_elf_omit_section_dynsym (bfd *output_bfd, |
| 2696 | struct bfd_link_info *info, |
| 2697 | asection *p) |
| 2698 | { |
| 2699 | /* We keep the .got section symbol so that explicit relocations |
| 2700 | against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode |
| 2701 | can be turned into relocations against the .got symbol. */ |
| 2702 | if (strcmp (p->name, ".got") == 0) |
| 2703 | return FALSE; |
| 2704 | |
| 2705 | return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p); |
| 2706 | } |
| 2707 | |
| 2708 | bfd_boolean |
| 2709 | tilegx_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 2710 | struct bfd_link_info *info) |
| 2711 | { |
| 2712 | struct tilegx_elf_link_hash_table *htab; |
| 2713 | bfd *dynobj; |
| 2714 | asection *s; |
| 2715 | bfd *ibfd; |
| 2716 | |
| 2717 | htab = tilegx_elf_hash_table (info); |
| 2718 | BFD_ASSERT (htab != NULL); |
| 2719 | dynobj = htab->elf.dynobj; |
| 2720 | BFD_ASSERT (dynobj != NULL); |
| 2721 | |
| 2722 | if (elf_hash_table (info)->dynamic_sections_created) |
| 2723 | { |
| 2724 | /* Set the contents of the .interp section to the interpreter. */ |
| 2725 | if (info->executable) |
| 2726 | { |
| 2727 | s = bfd_get_linker_section (dynobj, ".interp"); |
| 2728 | BFD_ASSERT (s != NULL); |
| 2729 | s->size = strlen (htab->dynamic_interpreter) + 1; |
| 2730 | s->contents = (unsigned char *) htab->dynamic_interpreter; |
| 2731 | } |
| 2732 | } |
| 2733 | |
| 2734 | /* Set up .got offsets for local syms, and space for local dynamic |
| 2735 | relocs. */ |
| 2736 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 2737 | { |
| 2738 | bfd_signed_vma *local_got; |
| 2739 | bfd_signed_vma *end_local_got; |
| 2740 | char *local_tls_type; |
| 2741 | bfd_size_type locsymcount; |
| 2742 | Elf_Internal_Shdr *symtab_hdr; |
| 2743 | asection *srel; |
| 2744 | |
| 2745 | if (! is_tilegx_elf (ibfd)) |
| 2746 | continue; |
| 2747 | |
| 2748 | for (s = ibfd->sections; s != NULL; s = s->next) |
| 2749 | { |
| 2750 | struct tilegx_elf_dyn_relocs *p; |
| 2751 | |
| 2752 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
| 2753 | { |
| 2754 | if (!bfd_is_abs_section (p->sec) |
| 2755 | && bfd_is_abs_section (p->sec->output_section)) |
| 2756 | { |
| 2757 | /* Input section has been discarded, either because |
| 2758 | it is a copy of a linkonce section or due to |
| 2759 | linker script /DISCARD/, so we'll be discarding |
| 2760 | the relocs too. */ |
| 2761 | } |
| 2762 | else if (p->count != 0) |
| 2763 | { |
| 2764 | srel = elf_section_data (p->sec)->sreloc; |
| 2765 | srel->size += p->count * TILEGX_ELF_RELA_BYTES (htab); |
| 2766 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
| 2767 | info->flags |= DF_TEXTREL; |
| 2768 | } |
| 2769 | } |
| 2770 | } |
| 2771 | |
| 2772 | local_got = elf_local_got_refcounts (ibfd); |
| 2773 | if (!local_got) |
| 2774 | continue; |
| 2775 | |
| 2776 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| 2777 | locsymcount = symtab_hdr->sh_info; |
| 2778 | end_local_got = local_got + locsymcount; |
| 2779 | local_tls_type = _bfd_tilegx_elf_local_got_tls_type (ibfd); |
| 2780 | s = htab->elf.sgot; |
| 2781 | srel = htab->elf.srelgot; |
| 2782 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
| 2783 | { |
| 2784 | if (*local_got > 0) |
| 2785 | { |
| 2786 | *local_got = s->size; |
| 2787 | s->size += TILEGX_ELF_WORD_BYTES (htab); |
| 2788 | if (*local_tls_type == GOT_TLS_GD) |
| 2789 | s->size += TILEGX_ELF_WORD_BYTES (htab); |
| 2790 | if (info->shared |
| 2791 | || *local_tls_type == GOT_TLS_GD |
| 2792 | || *local_tls_type == GOT_TLS_IE) |
| 2793 | srel->size += TILEGX_ELF_RELA_BYTES (htab); |
| 2794 | } |
| 2795 | else |
| 2796 | *local_got = (bfd_vma) -1; |
| 2797 | } |
| 2798 | } |
| 2799 | |
| 2800 | /* Allocate global sym .plt and .got entries, and space for global |
| 2801 | sym dynamic relocs. */ |
| 2802 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
| 2803 | |
| 2804 | if (elf_hash_table (info)->dynamic_sections_created) |
| 2805 | { |
| 2806 | /* If the .got section is more than 0x8000 bytes, we add |
| 2807 | 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16 |
| 2808 | bit relocations have a greater chance of working. */ |
| 2809 | if (htab->elf.sgot->size >= 0x8000 |
| 2810 | && elf_hash_table (info)->hgot->root.u.def.value == 0) |
| 2811 | elf_hash_table (info)->hgot->root.u.def.value = 0x8000; |
| 2812 | } |
| 2813 | |
| 2814 | if (htab->elf.sgotplt) |
| 2815 | { |
| 2816 | struct elf_link_hash_entry *got; |
| 2817 | got = elf_link_hash_lookup (elf_hash_table (info), |
| 2818 | "_GLOBAL_OFFSET_TABLE_", |
| 2819 | FALSE, FALSE, FALSE); |
| 2820 | |
| 2821 | /* Don't allocate .got.plt section if there are no GOT nor PLT |
| 2822 | entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */ |
| 2823 | if ((got == NULL |
| 2824 | || !got->ref_regular_nonweak) |
| 2825 | && (htab->elf.sgotplt->size |
| 2826 | == (unsigned)GOTPLT_HEADER_SIZE (htab)) |
| 2827 | && (htab->elf.splt == NULL |
| 2828 | || htab->elf.splt->size == 0) |
| 2829 | && (htab->elf.sgot == NULL |
| 2830 | || (htab->elf.sgot->size |
| 2831 | == get_elf_backend_data (output_bfd)->got_header_size))) |
| 2832 | htab->elf.sgotplt->size = 0; |
| 2833 | } |
| 2834 | |
| 2835 | /* The check_relocs and adjust_dynamic_symbol entry points have |
| 2836 | determined the sizes of the various dynamic sections. Allocate |
| 2837 | memory for them. */ |
| 2838 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 2839 | { |
| 2840 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
| 2841 | continue; |
| 2842 | |
| 2843 | if (s == htab->elf.splt |
| 2844 | || s == htab->elf.sgot |
| 2845 | || s == htab->elf.sgotplt |
| 2846 | || s == htab->sdynbss) |
| 2847 | { |
| 2848 | /* Strip this section if we don't need it; see the |
| 2849 | comment below. */ |
| 2850 | } |
| 2851 | else if (strncmp (s->name, ".rela", 5) == 0) |
| 2852 | { |
| 2853 | if (s->size != 0) |
| 2854 | { |
| 2855 | /* We use the reloc_count field as a counter if we need |
| 2856 | to copy relocs into the output file. */ |
| 2857 | s->reloc_count = 0; |
| 2858 | } |
| 2859 | } |
| 2860 | else |
| 2861 | { |
| 2862 | /* It's not one of our sections. */ |
| 2863 | continue; |
| 2864 | } |
| 2865 | |
| 2866 | if (s->size == 0) |
| 2867 | { |
| 2868 | /* If we don't need this section, strip it from the |
| 2869 | output file. This is mostly to handle .rela.bss and |
| 2870 | .rela.plt. We must create both sections in |
| 2871 | create_dynamic_sections, because they must be created |
| 2872 | before the linker maps input sections to output |
| 2873 | sections. The linker does that before |
| 2874 | adjust_dynamic_symbol is called, and it is that |
| 2875 | function which decides whether anything needs to go |
| 2876 | into these sections. */ |
| 2877 | s->flags |= SEC_EXCLUDE; |
| 2878 | continue; |
| 2879 | } |
| 2880 | |
| 2881 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
| 2882 | continue; |
| 2883 | |
| 2884 | /* Allocate memory for the section contents. Zero the memory |
| 2885 | for the benefit of .rela.plt, which has 4 unused entries |
| 2886 | at the beginning, and we don't want garbage. */ |
| 2887 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
| 2888 | if (s->contents == NULL) |
| 2889 | return FALSE; |
| 2890 | } |
| 2891 | |
| 2892 | if (elf_hash_table (info)->dynamic_sections_created) |
| 2893 | { |
| 2894 | /* Add some entries to the .dynamic section. We fill in the |
| 2895 | values later, in tilegx_elf_finish_dynamic_sections, but we |
| 2896 | must add the entries now so that we get the correct size for |
| 2897 | the .dynamic section. The DT_DEBUG entry is filled in by the |
| 2898 | dynamic linker and used by the debugger. */ |
| 2899 | #define add_dynamic_entry(TAG, VAL) \ |
| 2900 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
| 2901 | |
| 2902 | if (info->executable) |
| 2903 | { |
| 2904 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
| 2905 | return FALSE; |
| 2906 | } |
| 2907 | |
| 2908 | if (htab->elf.srelplt->size != 0) |
| 2909 | { |
| 2910 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
| 2911 | || !add_dynamic_entry (DT_PLTRELSZ, 0) |
| 2912 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) |
| 2913 | || !add_dynamic_entry (DT_JMPREL, 0)) |
| 2914 | return FALSE; |
| 2915 | } |
| 2916 | |
| 2917 | if (!add_dynamic_entry (DT_RELA, 0) |
| 2918 | || !add_dynamic_entry (DT_RELASZ, 0) |
| 2919 | || !add_dynamic_entry (DT_RELAENT, TILEGX_ELF_RELA_BYTES (htab))) |
| 2920 | return FALSE; |
| 2921 | |
| 2922 | /* If any dynamic relocs apply to a read-only section, |
| 2923 | then we need a DT_TEXTREL entry. */ |
| 2924 | if ((info->flags & DF_TEXTREL) == 0) |
| 2925 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
| 2926 | |
| 2927 | if (info->flags & DF_TEXTREL) |
| 2928 | { |
| 2929 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
| 2930 | return FALSE; |
| 2931 | } |
| 2932 | } |
| 2933 | #undef add_dynamic_entry |
| 2934 | |
| 2935 | return TRUE; |
| 2936 | } |
| 2937 | \f |
| 2938 | /* Return the base VMA address which should be subtracted from real addresses |
| 2939 | when resolving @dtpoff relocation. |
| 2940 | This is PT_TLS segment p_vaddr. */ |
| 2941 | |
| 2942 | static bfd_vma |
| 2943 | dtpoff_base (struct bfd_link_info *info) |
| 2944 | { |
| 2945 | /* If tls_sec is NULL, we should have signalled an error already. */ |
| 2946 | if (elf_hash_table (info)->tls_sec == NULL) |
| 2947 | return 0; |
| 2948 | return elf_hash_table (info)->tls_sec->vma; |
| 2949 | } |
| 2950 | |
| 2951 | /* Return the relocation value for @tpoff relocation. */ |
| 2952 | |
| 2953 | static bfd_vma |
| 2954 | tpoff (struct bfd_link_info *info, bfd_vma address) |
| 2955 | { |
| 2956 | struct elf_link_hash_table *htab = elf_hash_table (info); |
| 2957 | |
| 2958 | /* If tls_sec is NULL, we should have signalled an error already. */ |
| 2959 | if (htab->tls_sec == NULL) |
| 2960 | return 0; |
| 2961 | |
| 2962 | return (address - htab->tls_sec->vma); |
| 2963 | } |
| 2964 | |
| 2965 | /* Copy SIZE bits from FROM to TO at address ADDR. */ |
| 2966 | |
| 2967 | static void |
| 2968 | tilegx_copy_bits (bfd_byte *addr, int from, int to, int size) |
| 2969 | { |
| 2970 | int i; |
| 2971 | for (i = 0; i < size; i++) |
| 2972 | { |
| 2973 | int from_byte = (from + i) / 8; |
| 2974 | int from_bit = (from + i) % 8; |
| 2975 | int to_byte = (to + i) / 8; |
| 2976 | int to_bit = (to + i) % 8; |
| 2977 | bfd_byte to_mask = 1 << to_bit; |
| 2978 | addr[to_byte] = (addr[to_byte] & ~to_mask) |
| 2979 | | ((addr[from_byte] >> from_bit << to_bit) & to_mask); |
| 2980 | } |
| 2981 | } |
| 2982 | |
| 2983 | /* Replace the MASK bits in ADDR with those in INSN, for the next |
| 2984 | TILEGX_BUNDLE_SIZE_IN_BYTES bytes. */ |
| 2985 | |
| 2986 | static void |
| 2987 | tilegx_replace_insn (bfd_byte *addr, const bfd_byte *mask, |
| 2988 | const bfd_byte *insn) |
| 2989 | { |
| 2990 | int i; |
| 2991 | for (i = 0; i < TILEGX_BUNDLE_SIZE_IN_BYTES; i++) |
| 2992 | { |
| 2993 | addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]); |
| 2994 | } |
| 2995 | } |
| 2996 | |
| 2997 | /* Mask to extract the bits corresponding to an instruction in a |
| 2998 | specific pipe of a bundle. */ |
| 2999 | static const bfd_byte insn_mask_X1[] = { |
| 3000 | 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x3f |
| 3001 | }; |
| 3002 | |
| 3003 | /* Mask to extract the bits corresponding to an instruction in a |
| 3004 | specific pipe of a bundle, minus the destination operand and the |
| 3005 | first source operand. */ |
| 3006 | static const bfd_byte insn_mask_X0_no_dest_no_srca[] = { |
| 3007 | 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00 |
| 3008 | }; |
| 3009 | |
| 3010 | static const bfd_byte insn_mask_X1_no_dest_no_srca[] = { |
| 3011 | 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x3f |
| 3012 | }; |
| 3013 | |
| 3014 | static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = { |
| 3015 | 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00 |
| 3016 | }; |
| 3017 | static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = { |
| 3018 | 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x3c |
| 3019 | }; |
| 3020 | |
| 3021 | /* Mask to extract the bits corresponding to an instruction in a |
| 3022 | specific pipe of a bundle, minus the register operands. */ |
| 3023 | static const bfd_byte insn_mask_X0_no_operand[] = { |
| 3024 | 0x00, 0x00, 0xfc, 0x7f, 0x00, 0x00, 0x00, 0x00 |
| 3025 | }; |
| 3026 | |
| 3027 | static const bfd_byte insn_mask_X1_no_operand[] = { |
| 3028 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x3f |
| 3029 | }; |
| 3030 | |
| 3031 | static const bfd_byte insn_mask_Y0_no_operand[] = { |
| 3032 | 0x00, 0x00, 0x0c, 0x78, 0x00, 0x00, 0x00, 0x00 |
| 3033 | }; |
| 3034 | |
| 3035 | static const bfd_byte insn_mask_Y1_no_operand[] = { |
| 3036 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x3c |
| 3037 | }; |
| 3038 | |
| 3039 | /* Various instructions synthesized to support tls references. */ |
| 3040 | |
| 3041 | /* ld r0, r0 in the X1 pipe, used for tls ie. */ |
| 3042 | static const bfd_byte insn_tls_ie_ld_X1[] = { |
| 3043 | 0x00, 0x00, 0x00, 0x00, 0x00, 0xe8, 0x6a, 0x28 |
| 3044 | }; |
| 3045 | |
| 3046 | /* ld4s r0, r0 in the X1 pipe, used for tls ie. */ |
| 3047 | static const bfd_byte insn_tls_ie_ld4s_X1[] = { |
| 3048 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x98, 0x6a, 0x28 |
| 3049 | }; |
| 3050 | |
| 3051 | /* add r0, r0, tp in various pipes, used for tls ie. */ |
| 3052 | static const bfd_byte insn_tls_ie_add_X0X1[] = { |
| 3053 | 0x00, 0x50, 0x0f, 0x50, 0x00, 0xa8, 0x07, 0x28 |
| 3054 | }; |
| 3055 | static const bfd_byte insn_tls_ie_add_Y0Y1[] = { |
| 3056 | 0x00, 0x50, 0x27, 0x2c, 0x00, 0xa8, 0x13, 0x9a |
| 3057 | }; |
| 3058 | |
| 3059 | /* addx r0, r0, tp in various pipes, used for tls ie. */ |
| 3060 | static const bfd_byte insn_tls_ie_addx_X0X1[] = { |
| 3061 | 0x00, 0x50, 0x0b, 0x50, 0x00, 0xa8, 0x05, 0x28 |
| 3062 | }; |
| 3063 | static const bfd_byte insn_tls_ie_addx_Y0Y1[] = { |
| 3064 | 0x00, 0x50, 0x03, 0x2c, 0x00, 0xa8, 0x01, 0x9a |
| 3065 | }; |
| 3066 | |
| 3067 | /* move r0, r0 in various pipes, used for tls gd. */ |
| 3068 | static const bfd_byte insn_tls_gd_add_X0X1[] = { |
| 3069 | 0x00, 0xf0, 0x07, 0x51, 0x00, 0xf8, 0x3b, 0x28 |
| 3070 | }; |
| 3071 | static const bfd_byte insn_tls_gd_add_Y0Y1[] = { |
| 3072 | 0x00, 0xf0, 0x0b, 0x54, 0x00, 0xf8, 0x05, 0xae |
| 3073 | }; |
| 3074 | |
| 3075 | static const bfd_byte *insn_move_X0X1 = insn_tls_gd_add_X0X1; |
| 3076 | static const bfd_byte *insn_move_Y0Y1 = insn_tls_gd_add_Y0Y1; |
| 3077 | |
| 3078 | static const bfd_byte *insn_add_X0X1 = insn_tls_ie_add_X0X1; |
| 3079 | static const bfd_byte *insn_add_Y0Y1 = insn_tls_ie_add_Y0Y1; |
| 3080 | |
| 3081 | static const bfd_byte *insn_addx_X0X1 = insn_tls_ie_addx_X0X1; |
| 3082 | static const bfd_byte *insn_addx_Y0Y1 = insn_tls_ie_addx_Y0Y1; |
| 3083 | |
| 3084 | /* Relocate an TILEGX ELF section. |
| 3085 | |
| 3086 | The RELOCATE_SECTION function is called by the new ELF backend linker |
| 3087 | to handle the relocations for a section. |
| 3088 | |
| 3089 | The relocs are always passed as Rela structures. |
| 3090 | |
| 3091 | This function is responsible for adjusting the section contents as |
| 3092 | necessary, and (if generating a relocatable output file) adjusting |
| 3093 | the reloc addend as necessary. |
| 3094 | |
| 3095 | This function does not have to worry about setting the reloc |
| 3096 | address or the reloc symbol index. |
| 3097 | |
| 3098 | LOCAL_SYMS is a pointer to the swapped in local symbols. |
| 3099 | |
| 3100 | LOCAL_SECTIONS is an array giving the section in the input file |
| 3101 | corresponding to the st_shndx field of each local symbol. |
| 3102 | |
| 3103 | The global hash table entry for the global symbols can be found |
| 3104 | via elf_sym_hashes (input_bfd). |
| 3105 | |
| 3106 | When generating relocatable output, this function must handle |
| 3107 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 3108 | going to be the section symbol corresponding to the output |
| 3109 | section, which means that the addend must be adjusted |
| 3110 | accordingly. */ |
| 3111 | |
| 3112 | bfd_boolean |
| 3113 | tilegx_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
| 3114 | bfd *input_bfd, asection *input_section, |
| 3115 | bfd_byte *contents, Elf_Internal_Rela *relocs, |
| 3116 | Elf_Internal_Sym *local_syms, |
| 3117 | asection **local_sections) |
| 3118 | { |
| 3119 | struct tilegx_elf_link_hash_table *htab; |
| 3120 | Elf_Internal_Shdr *symtab_hdr; |
| 3121 | struct elf_link_hash_entry **sym_hashes; |
| 3122 | bfd_vma *local_got_offsets; |
| 3123 | bfd_vma got_base; |
| 3124 | asection *sreloc; |
| 3125 | Elf_Internal_Rela *rel; |
| 3126 | Elf_Internal_Rela *relend; |
| 3127 | int num_relocs; |
| 3128 | |
| 3129 | htab = tilegx_elf_hash_table (info); |
| 3130 | BFD_ASSERT (htab != NULL); |
| 3131 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
| 3132 | sym_hashes = elf_sym_hashes (input_bfd); |
| 3133 | local_got_offsets = elf_local_got_offsets (input_bfd); |
| 3134 | |
| 3135 | if (elf_hash_table (info)->hgot == NULL) |
| 3136 | got_base = 0; |
| 3137 | else |
| 3138 | got_base = elf_hash_table (info)->hgot->root.u.def.value; |
| 3139 | |
| 3140 | sreloc = elf_section_data (input_section)->sreloc; |
| 3141 | |
| 3142 | rel = relocs; |
| 3143 | num_relocs = input_section->reloc_count; |
| 3144 | relend = relocs + num_relocs; |
| 3145 | for (; rel < relend; rel++) |
| 3146 | { |
| 3147 | int r_type, tls_type; |
| 3148 | bfd_boolean is_tls_iele, is_tls_le; |
| 3149 | reloc_howto_type *howto; |
| 3150 | unsigned long r_symndx; |
| 3151 | struct elf_link_hash_entry *h; |
| 3152 | Elf_Internal_Sym *sym; |
| 3153 | tilegx_create_func create_func; |
| 3154 | asection *sec; |
| 3155 | bfd_vma relocation; |
| 3156 | bfd_reloc_status_type r; |
| 3157 | const char *name; |
| 3158 | bfd_vma off; |
| 3159 | bfd_boolean is_plt = FALSE; |
| 3160 | |
| 3161 | bfd_boolean unresolved_reloc; |
| 3162 | |
| 3163 | r_type = TILEGX_ELF_R_TYPE (rel->r_info); |
| 3164 | if (r_type == R_TILEGX_GNU_VTINHERIT |
| 3165 | || r_type == R_TILEGX_GNU_VTENTRY) |
| 3166 | continue; |
| 3167 | |
| 3168 | if ((unsigned int)r_type >= ARRAY_SIZE (tilegx_elf_howto_table)) |
| 3169 | { |
| 3170 | /* Not clear if we need to check here, but just be paranoid. */ |
| 3171 | (*_bfd_error_handler) |
| 3172 | (_("%B: unrecognized relocation (0x%x) in section `%A'"), |
| 3173 | input_bfd, r_type, input_section); |
| 3174 | bfd_set_error (bfd_error_bad_value); |
| 3175 | return FALSE; |
| 3176 | } |
| 3177 | |
| 3178 | howto = tilegx_elf_howto_table + r_type; |
| 3179 | |
| 3180 | /* This is a final link. */ |
| 3181 | r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info); |
| 3182 | h = NULL; |
| 3183 | sym = NULL; |
| 3184 | sec = NULL; |
| 3185 | unresolved_reloc = FALSE; |
| 3186 | if (r_symndx < symtab_hdr->sh_info) |
| 3187 | { |
| 3188 | sym = local_syms + r_symndx; |
| 3189 | sec = local_sections[r_symndx]; |
| 3190 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 3191 | } |
| 3192 | else |
| 3193 | { |
| 3194 | bfd_boolean warned ATTRIBUTE_UNUSED; |
| 3195 | bfd_boolean ignored ATTRIBUTE_UNUSED; |
| 3196 | |
| 3197 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 3198 | r_symndx, symtab_hdr, sym_hashes, |
| 3199 | h, sec, relocation, |
| 3200 | unresolved_reloc, warned, ignored); |
| 3201 | if (warned) |
| 3202 | { |
| 3203 | /* To avoid generating warning messages about truncated |
| 3204 | relocations, set the relocation's address to be the same as |
| 3205 | the start of this section. */ |
| 3206 | if (input_section->output_section != NULL) |
| 3207 | relocation = input_section->output_section->vma; |
| 3208 | else |
| 3209 | relocation = 0; |
| 3210 | } |
| 3211 | } |
| 3212 | |
| 3213 | if (sec != NULL && discarded_section (sec)) |
| 3214 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
| 3215 | rel, 1, relend, howto, 0, contents); |
| 3216 | |
| 3217 | if (info->relocatable) |
| 3218 | continue; |
| 3219 | |
| 3220 | if (h != NULL) |
| 3221 | name = h->root.root.string; |
| 3222 | else |
| 3223 | { |
| 3224 | name = (bfd_elf_string_from_elf_section |
| 3225 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); |
| 3226 | if (name == NULL || *name == '\0') |
| 3227 | name = bfd_section_name (input_bfd, sec); |
| 3228 | } |
| 3229 | |
| 3230 | switch (r_type) |
| 3231 | { |
| 3232 | case R_TILEGX_TLS_GD_CALL: |
| 3233 | case R_TILEGX_IMM8_X0_TLS_GD_ADD: |
| 3234 | case R_TILEGX_IMM8_Y0_TLS_GD_ADD: |
| 3235 | case R_TILEGX_IMM8_X1_TLS_GD_ADD: |
| 3236 | case R_TILEGX_IMM8_Y1_TLS_GD_ADD: |
| 3237 | case R_TILEGX_IMM8_X0_TLS_ADD: |
| 3238 | case R_TILEGX_IMM8_Y0_TLS_ADD: |
| 3239 | case R_TILEGX_IMM8_X1_TLS_ADD: |
| 3240 | case R_TILEGX_IMM8_Y1_TLS_ADD: |
| 3241 | tls_type = GOT_UNKNOWN; |
| 3242 | if (h == NULL && local_got_offsets) |
| 3243 | tls_type = |
| 3244 | _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx]; |
| 3245 | else if (h != NULL) |
| 3246 | tls_type = tilegx_elf_hash_entry(h)->tls_type; |
| 3247 | |
| 3248 | is_tls_iele = (! info->shared || tls_type == GOT_TLS_IE); |
| 3249 | is_tls_le = is_tls_iele && (!input_section->sec_flg0 |
| 3250 | && !info->shared |
| 3251 | && (h == NULL || h->dynindx == -1)); |
| 3252 | |
| 3253 | if (r_type == R_TILEGX_TLS_GD_CALL) |
| 3254 | { |
| 3255 | if (is_tls_le) |
| 3256 | { |
| 3257 | /* GD -> LE */ |
| 3258 | tilegx_replace_insn (contents + rel->r_offset, |
| 3259 | insn_mask_X1, insn_move_X0X1); |
| 3260 | continue; |
| 3261 | } |
| 3262 | else if (is_tls_iele) |
| 3263 | { |
| 3264 | /* GD -> IE */ |
| 3265 | if (ABI_64_P (output_bfd)) |
| 3266 | tilegx_replace_insn (contents + rel->r_offset, |
| 3267 | insn_mask_X1, insn_tls_ie_ld_X1); |
| 3268 | else |
| 3269 | tilegx_replace_insn (contents + rel->r_offset, |
| 3270 | insn_mask_X1, insn_tls_ie_ld4s_X1); |
| 3271 | continue; |
| 3272 | } |
| 3273 | |
| 3274 | /* GD -> GD */ |
| 3275 | h = (struct elf_link_hash_entry *) |
| 3276 | bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE, |
| 3277 | FALSE, TRUE); |
| 3278 | BFD_ASSERT (h != NULL); |
| 3279 | r_type = R_TILEGX_JUMPOFF_X1_PLT; |
| 3280 | howto = tilegx_elf_howto_table + r_type; |
| 3281 | } |
| 3282 | else if (r_type == R_TILEGX_IMM8_X0_TLS_ADD |
| 3283 | || r_type == R_TILEGX_IMM8_X1_TLS_ADD |
| 3284 | || r_type == R_TILEGX_IMM8_Y0_TLS_ADD |
| 3285 | || r_type == R_TILEGX_IMM8_Y1_TLS_ADD) |
| 3286 | { |
| 3287 | bfd_boolean is_pipe0 = |
| 3288 | (r_type == R_TILEGX_IMM8_X0_TLS_ADD |
| 3289 | || r_type == R_TILEGX_IMM8_Y0_TLS_ADD); |
| 3290 | bfd_boolean is_X0X1 = |
| 3291 | (r_type == R_TILEGX_IMM8_X0_TLS_ADD |
| 3292 | || r_type == R_TILEGX_IMM8_X1_TLS_ADD); |
| 3293 | int dest_begin = is_pipe0 ? 0 : 31; |
| 3294 | int src_begin; |
| 3295 | const bfd_byte *insn; |
| 3296 | const bfd_byte *mask = NULL; |
| 3297 | |
| 3298 | if (is_tls_le) |
| 3299 | { |
| 3300 | /* 1. copy dest operand into the first source operand. |
| 3301 | 2. change the opcode to "move". */ |
| 3302 | src_begin = is_pipe0 ? 6 : 37; |
| 3303 | insn = is_X0X1 ? insn_move_X0X1 : insn_move_Y0Y1; |
| 3304 | |
| 3305 | switch (r_type) |
| 3306 | { |
| 3307 | case R_TILEGX_IMM8_X0_TLS_ADD: |
| 3308 | mask = insn_mask_X0_no_dest_no_srca; |
| 3309 | break; |
| 3310 | case R_TILEGX_IMM8_X1_TLS_ADD: |
| 3311 | mask = insn_mask_X1_no_dest_no_srca; |
| 3312 | break; |
| 3313 | case R_TILEGX_IMM8_Y0_TLS_ADD: |
| 3314 | mask = insn_mask_Y0_no_dest_no_srca; |
| 3315 | break; |
| 3316 | case R_TILEGX_IMM8_Y1_TLS_ADD: |
| 3317 | mask = insn_mask_Y1_no_dest_no_srca; |
| 3318 | break; |
| 3319 | } |
| 3320 | } |
| 3321 | else |
| 3322 | { |
| 3323 | /* 1. copy dest operand into the second source operand. |
| 3324 | 2. change the opcode to "add". */ |
| 3325 | src_begin = is_pipe0 ? 12 : 43; |
| 3326 | if (ABI_64_P (output_bfd)) |
| 3327 | insn = is_X0X1 ? insn_add_X0X1 : insn_add_Y0Y1; |
| 3328 | else |
| 3329 | insn = is_X0X1 ? insn_addx_X0X1 : insn_addx_Y0Y1; |
| 3330 | |
| 3331 | switch (r_type) |
| 3332 | { |
| 3333 | case R_TILEGX_IMM8_X0_TLS_ADD: |
| 3334 | mask = insn_mask_X0_no_operand; |
| 3335 | break; |
| 3336 | case R_TILEGX_IMM8_X1_TLS_ADD: |
| 3337 | mask = insn_mask_X1_no_operand; |
| 3338 | break; |
| 3339 | case R_TILEGX_IMM8_Y0_TLS_ADD: |
| 3340 | mask = insn_mask_Y0_no_operand; |
| 3341 | break; |
| 3342 | case R_TILEGX_IMM8_Y1_TLS_ADD: |
| 3343 | mask = insn_mask_Y1_no_operand; |
| 3344 | break; |
| 3345 | } |
| 3346 | } |
| 3347 | |
| 3348 | tilegx_copy_bits (contents + rel->r_offset, dest_begin, |
| 3349 | src_begin, 6); |
| 3350 | tilegx_replace_insn (contents + rel->r_offset, mask, insn); |
| 3351 | |
| 3352 | continue; |
| 3353 | } |
| 3354 | else |
| 3355 | { |
| 3356 | const bfd_byte *mask = NULL; |
| 3357 | const bfd_byte *add_insn = NULL; |
| 3358 | bfd_boolean is_64bit = ABI_64_P (output_bfd); |
| 3359 | |
| 3360 | switch (r_type) |
| 3361 | { |
| 3362 | case R_TILEGX_IMM8_X0_TLS_GD_ADD: |
| 3363 | add_insn = is_tls_iele |
| 3364 | ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1) |
| 3365 | : insn_tls_gd_add_X0X1; |
| 3366 | mask = insn_mask_X0_no_dest_no_srca; |
| 3367 | break; |
| 3368 | case R_TILEGX_IMM8_X1_TLS_GD_ADD: |
| 3369 | add_insn = is_tls_iele |
| 3370 | ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1) |
| 3371 | : insn_tls_gd_add_X0X1; |
| 3372 | mask = insn_mask_X1_no_dest_no_srca; |
| 3373 | break; |
| 3374 | case R_TILEGX_IMM8_Y0_TLS_GD_ADD: |
| 3375 | add_insn = is_tls_iele |
| 3376 | ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1) |
| 3377 | : insn_tls_gd_add_Y0Y1; |
| 3378 | mask = insn_mask_Y0_no_dest_no_srca; |
| 3379 | break; |
| 3380 | case R_TILEGX_IMM8_Y1_TLS_GD_ADD: |
| 3381 | add_insn = is_tls_iele |
| 3382 | ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1) |
| 3383 | : insn_tls_gd_add_Y0Y1; |
| 3384 | mask = insn_mask_Y1_no_dest_no_srca; |
| 3385 | break; |
| 3386 | } |
| 3387 | |
| 3388 | tilegx_replace_insn (contents + rel->r_offset, mask, add_insn); |
| 3389 | |
| 3390 | continue; |
| 3391 | } |
| 3392 | break; |
| 3393 | case R_TILEGX_TLS_IE_LOAD: |
| 3394 | if (!input_section->sec_flg0 |
| 3395 | && !info->shared |
| 3396 | && (h == NULL || h->dynindx == -1)) |
| 3397 | { |
| 3398 | /* IE -> LE */ |
| 3399 | tilegx_replace_insn (contents + rel->r_offset, |
| 3400 | insn_mask_X1_no_dest_no_srca, |
| 3401 | insn_move_X0X1); |
| 3402 | } |
| 3403 | else |
| 3404 | { |
| 3405 | /* IE -> IE */ |
| 3406 | if (ABI_64_P (output_bfd)) |
| 3407 | tilegx_replace_insn (contents + rel->r_offset, |
| 3408 | insn_mask_X1_no_dest_no_srca, |
| 3409 | insn_tls_ie_ld_X1); |
| 3410 | else |
| 3411 | tilegx_replace_insn (contents + rel->r_offset, |
| 3412 | insn_mask_X1_no_dest_no_srca, |
| 3413 | insn_tls_ie_ld4s_X1); |
| 3414 | } |
| 3415 | continue; |
| 3416 | break; |
| 3417 | default: |
| 3418 | break; |
| 3419 | } |
| 3420 | |
| 3421 | switch (r_type) |
| 3422 | { |
| 3423 | case R_TILEGX_IMM16_X0_HW0_GOT: |
| 3424 | case R_TILEGX_IMM16_X1_HW0_GOT: |
| 3425 | case R_TILEGX_IMM16_X0_HW0_LAST_GOT: |
| 3426 | case R_TILEGX_IMM16_X1_HW0_LAST_GOT: |
| 3427 | case R_TILEGX_IMM16_X0_HW1_LAST_GOT: |
| 3428 | case R_TILEGX_IMM16_X1_HW1_LAST_GOT: |
| 3429 | /* Relocation is to the entry for this symbol in the global |
| 3430 | offset table. */ |
| 3431 | if (htab->elf.sgot == NULL) |
| 3432 | abort (); |
| 3433 | |
| 3434 | if (h != NULL) |
| 3435 | { |
| 3436 | bfd_boolean dyn; |
| 3437 | |
| 3438 | off = h->got.offset; |
| 3439 | BFD_ASSERT (off != (bfd_vma) -1); |
| 3440 | dyn = elf_hash_table (info)->dynamic_sections_created; |
| 3441 | |
| 3442 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
| 3443 | || (info->shared |
| 3444 | && SYMBOL_REFERENCES_LOCAL (info, h))) |
| 3445 | { |
| 3446 | /* This is actually a static link, or it is a |
| 3447 | -Bsymbolic link and the symbol is defined |
| 3448 | locally, or the symbol was forced to be local |
| 3449 | because of a version file. We must initialize |
| 3450 | this entry in the global offset table. Since the |
| 3451 | offset must always be a multiple |
| 3452 | of 8 for 64-bit, we use the least significant bit |
| 3453 | to record whether we have initialized it already. |
| 3454 | |
| 3455 | When doing a dynamic link, we create a .rela.got |
| 3456 | relocation entry to initialize the value. This |
| 3457 | is done in the finish_dynamic_symbol routine. */ |
| 3458 | if ((off & 1) != 0) |
| 3459 | off &= ~1; |
| 3460 | else |
| 3461 | { |
| 3462 | TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation, |
| 3463 | htab->elf.sgot->contents + off); |
| 3464 | h->got.offset |= 1; |
| 3465 | } |
| 3466 | } |
| 3467 | else |
| 3468 | unresolved_reloc = FALSE; |
| 3469 | } |
| 3470 | else |
| 3471 | { |
| 3472 | BFD_ASSERT (local_got_offsets != NULL |
| 3473 | && local_got_offsets[r_symndx] != (bfd_vma) -1); |
| 3474 | |
| 3475 | off = local_got_offsets[r_symndx]; |
| 3476 | |
| 3477 | /* The offset must always be a multiple of 8 on 64-bit. |
| 3478 | We use the least significant bit to record |
| 3479 | whether we have already processed this entry. */ |
| 3480 | if ((off & 1) != 0) |
| 3481 | off &= ~1; |
| 3482 | else |
| 3483 | { |
| 3484 | if (info->shared) |
| 3485 | { |
| 3486 | asection *s; |
| 3487 | Elf_Internal_Rela outrel; |
| 3488 | |
| 3489 | /* We need to generate a R_TILEGX_RELATIVE reloc |
| 3490 | for the dynamic linker. */ |
| 3491 | s = htab->elf.srelgot; |
| 3492 | BFD_ASSERT (s != NULL); |
| 3493 | |
| 3494 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
| 3495 | + htab->elf.sgot->output_offset |
| 3496 | + off); |
| 3497 | outrel.r_info = |
| 3498 | TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE); |
| 3499 | outrel.r_addend = relocation; |
| 3500 | relocation = 0; |
| 3501 | tilegx_elf_append_rela (output_bfd, s, &outrel); |
| 3502 | } |
| 3503 | |
| 3504 | TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation, |
| 3505 | htab->elf.sgot->contents + off); |
| 3506 | local_got_offsets[r_symndx] |= 1; |
| 3507 | } |
| 3508 | } |
| 3509 | relocation = off - got_base; |
| 3510 | break; |
| 3511 | |
| 3512 | case R_TILEGX_JUMPOFF_X1_PLT: |
| 3513 | case R_TILEGX_IMM16_X0_HW0_PLT_PCREL: |
| 3514 | case R_TILEGX_IMM16_X1_HW0_PLT_PCREL: |
| 3515 | case R_TILEGX_IMM16_X0_HW1_PLT_PCREL: |
| 3516 | case R_TILEGX_IMM16_X1_HW1_PLT_PCREL: |
| 3517 | case R_TILEGX_IMM16_X0_HW2_PLT_PCREL: |
| 3518 | case R_TILEGX_IMM16_X1_HW2_PLT_PCREL: |
| 3519 | case R_TILEGX_IMM16_X0_HW3_PLT_PCREL: |
| 3520 | case R_TILEGX_IMM16_X1_HW3_PLT_PCREL: |
| 3521 | case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL: |
| 3522 | case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL: |
| 3523 | case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL: |
| 3524 | case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL: |
| 3525 | case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL: |
| 3526 | case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL: |
| 3527 | /* Relocation is to the entry for this symbol in the |
| 3528 | procedure linkage table. */ |
| 3529 | BFD_ASSERT (h != NULL); |
| 3530 | |
| 3531 | if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL) |
| 3532 | { |
| 3533 | /* We didn't make a PLT entry for this symbol. This |
| 3534 | happens when statically linking PIC code, or when |
| 3535 | using -Bsymbolic. */ |
| 3536 | break; |
| 3537 | } |
| 3538 | |
| 3539 | relocation = (htab->elf.splt->output_section->vma |
| 3540 | + htab->elf.splt->output_offset |
| 3541 | + h->plt.offset); |
| 3542 | unresolved_reloc = FALSE; |
| 3543 | break; |
| 3544 | |
| 3545 | case R_TILEGX_64_PCREL: |
| 3546 | case R_TILEGX_32_PCREL: |
| 3547 | case R_TILEGX_16_PCREL: |
| 3548 | case R_TILEGX_8_PCREL: |
| 3549 | case R_TILEGX_IMM16_X0_HW0_PCREL: |
| 3550 | case R_TILEGX_IMM16_X1_HW0_PCREL: |
| 3551 | case R_TILEGX_IMM16_X0_HW1_PCREL: |
| 3552 | case R_TILEGX_IMM16_X1_HW1_PCREL: |
| 3553 | case R_TILEGX_IMM16_X0_HW2_PCREL: |
| 3554 | case R_TILEGX_IMM16_X1_HW2_PCREL: |
| 3555 | case R_TILEGX_IMM16_X0_HW3_PCREL: |
| 3556 | case R_TILEGX_IMM16_X1_HW3_PCREL: |
| 3557 | case R_TILEGX_IMM16_X0_HW0_LAST_PCREL: |
| 3558 | case R_TILEGX_IMM16_X1_HW0_LAST_PCREL: |
| 3559 | case R_TILEGX_IMM16_X0_HW1_LAST_PCREL: |
| 3560 | case R_TILEGX_IMM16_X1_HW1_LAST_PCREL: |
| 3561 | case R_TILEGX_IMM16_X0_HW2_LAST_PCREL: |
| 3562 | case R_TILEGX_IMM16_X1_HW2_LAST_PCREL: |
| 3563 | if (h != NULL |
| 3564 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
| 3565 | break; |
| 3566 | /* Fall through. */ |
| 3567 | case R_TILEGX_64: |
| 3568 | case R_TILEGX_32: |
| 3569 | case R_TILEGX_16: |
| 3570 | case R_TILEGX_8: |
| 3571 | case R_TILEGX_HW0: |
| 3572 | case R_TILEGX_HW1: |
| 3573 | case R_TILEGX_HW2: |
| 3574 | case R_TILEGX_HW3: |
| 3575 | case R_TILEGX_HW0_LAST: |
| 3576 | case R_TILEGX_HW1_LAST: |
| 3577 | case R_TILEGX_HW2_LAST: |
| 3578 | case R_TILEGX_COPY: |
| 3579 | case R_TILEGX_GLOB_DAT: |
| 3580 | case R_TILEGX_JMP_SLOT: |
| 3581 | case R_TILEGX_RELATIVE: |
| 3582 | case R_TILEGX_BROFF_X1: |
| 3583 | case R_TILEGX_JUMPOFF_X1: |
| 3584 | case R_TILEGX_IMM8_X0: |
| 3585 | case R_TILEGX_IMM8_Y0: |
| 3586 | case R_TILEGX_IMM8_X1: |
| 3587 | case R_TILEGX_IMM8_Y1: |
| 3588 | case R_TILEGX_DEST_IMM8_X1: |
| 3589 | case R_TILEGX_MT_IMM14_X1: |
| 3590 | case R_TILEGX_MF_IMM14_X1: |
| 3591 | case R_TILEGX_MMSTART_X0: |
| 3592 | case R_TILEGX_MMEND_X0: |
| 3593 | case R_TILEGX_SHAMT_X0: |
| 3594 | case R_TILEGX_SHAMT_X1: |
| 3595 | case R_TILEGX_SHAMT_Y0: |
| 3596 | case R_TILEGX_SHAMT_Y1: |
| 3597 | case R_TILEGX_IMM16_X0_HW0: |
| 3598 | case R_TILEGX_IMM16_X1_HW0: |
| 3599 | case R_TILEGX_IMM16_X0_HW1: |
| 3600 | case R_TILEGX_IMM16_X1_HW1: |
| 3601 | case R_TILEGX_IMM16_X0_HW2: |
| 3602 | case R_TILEGX_IMM16_X1_HW2: |
| 3603 | case R_TILEGX_IMM16_X0_HW3: |
| 3604 | case R_TILEGX_IMM16_X1_HW3: |
| 3605 | case R_TILEGX_IMM16_X0_HW0_LAST: |
| 3606 | case R_TILEGX_IMM16_X1_HW0_LAST: |
| 3607 | case R_TILEGX_IMM16_X0_HW1_LAST: |
| 3608 | case R_TILEGX_IMM16_X1_HW1_LAST: |
| 3609 | case R_TILEGX_IMM16_X0_HW2_LAST: |
| 3610 | case R_TILEGX_IMM16_X1_HW2_LAST: |
| 3611 | if ((input_section->flags & SEC_ALLOC) == 0) |
| 3612 | break; |
| 3613 | |
| 3614 | if ((info->shared |
| 3615 | && (h == NULL |
| 3616 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
| 3617 | || h->root.type != bfd_link_hash_undefweak) |
| 3618 | && (! howto->pc_relative |
| 3619 | || !SYMBOL_CALLS_LOCAL (info, h))) |
| 3620 | || (!info->shared |
| 3621 | && h != NULL |
| 3622 | && h->dynindx != -1 |
| 3623 | && !h->non_got_ref |
| 3624 | && ((h->def_dynamic |
| 3625 | && !h->def_regular) |
| 3626 | || h->root.type == bfd_link_hash_undefweak |
| 3627 | || h->root.type == bfd_link_hash_undefined))) |
| 3628 | { |
| 3629 | Elf_Internal_Rela outrel; |
| 3630 | bfd_boolean skip, relocate = FALSE; |
| 3631 | |
| 3632 | /* When generating a shared object, these relocations |
| 3633 | are copied into the output file to be resolved at run |
| 3634 | time. */ |
| 3635 | |
| 3636 | BFD_ASSERT (sreloc != NULL); |
| 3637 | |
| 3638 | skip = FALSE; |
| 3639 | |
| 3640 | outrel.r_offset = |
| 3641 | _bfd_elf_section_offset (output_bfd, info, input_section, |
| 3642 | rel->r_offset); |
| 3643 | if (outrel.r_offset == (bfd_vma) -1) |
| 3644 | skip = TRUE; |
| 3645 | else if (outrel.r_offset == (bfd_vma) -2) |
| 3646 | skip = TRUE, relocate = TRUE; |
| 3647 | outrel.r_offset += (input_section->output_section->vma |
| 3648 | + input_section->output_offset); |
| 3649 | |
| 3650 | switch (r_type) |
| 3651 | { |
| 3652 | case R_TILEGX_64_PCREL: |
| 3653 | case R_TILEGX_32_PCREL: |
| 3654 | case R_TILEGX_16_PCREL: |
| 3655 | case R_TILEGX_8_PCREL: |
| 3656 | /* If the symbol is not dynamic, we should not keep |
| 3657 | a dynamic relocation. But an .rela.* slot has been |
| 3658 | allocated for it, output R_TILEGX_NONE. |
| 3659 | FIXME: Add code tracking needed dynamic relocs as |
| 3660 | e.g. i386 has. */ |
| 3661 | if (h->dynindx == -1) |
| 3662 | skip = TRUE, relocate = TRUE; |
| 3663 | break; |
| 3664 | } |
| 3665 | |
| 3666 | if (skip) |
| 3667 | memset (&outrel, 0, sizeof outrel); |
| 3668 | /* h->dynindx may be -1 if the symbol was marked to |
| 3669 | become local. */ |
| 3670 | else if (h != NULL && |
| 3671 | h->dynindx != -1 |
| 3672 | && (! is_plt |
| 3673 | || !info->shared |
| 3674 | || !SYMBOLIC_BIND (info, h) |
| 3675 | || !h->def_regular)) |
| 3676 | { |
| 3677 | BFD_ASSERT (h->dynindx != -1); |
| 3678 | outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, h->dynindx, r_type); |
| 3679 | outrel.r_addend = rel->r_addend; |
| 3680 | } |
| 3681 | else |
| 3682 | { |
| 3683 | if (r_type == R_TILEGX_32 || r_type == R_TILEGX_64) |
| 3684 | { |
| 3685 | outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, |
| 3686 | R_TILEGX_RELATIVE); |
| 3687 | outrel.r_addend = relocation + rel->r_addend; |
| 3688 | } |
| 3689 | else |
| 3690 | { |
| 3691 | long indx; |
| 3692 | |
| 3693 | outrel.r_addend = relocation + rel->r_addend; |
| 3694 | |
| 3695 | if (is_plt) |
| 3696 | sec = htab->elf.splt; |
| 3697 | |
| 3698 | if (bfd_is_abs_section (sec)) |
| 3699 | indx = 0; |
| 3700 | else if (sec == NULL || sec->owner == NULL) |
| 3701 | { |
| 3702 | bfd_set_error (bfd_error_bad_value); |
| 3703 | return FALSE; |
| 3704 | } |
| 3705 | else |
| 3706 | { |
| 3707 | asection *osec; |
| 3708 | |
| 3709 | /* We are turning this relocation into one |
| 3710 | against a section symbol. It would be |
| 3711 | proper to subtract the symbol's value, |
| 3712 | osec->vma, from the emitted reloc addend, |
| 3713 | but ld.so expects buggy relocs. */ |
| 3714 | osec = sec->output_section; |
| 3715 | indx = elf_section_data (osec)->dynindx; |
| 3716 | |
| 3717 | if (indx == 0) |
| 3718 | { |
| 3719 | osec = htab->elf.text_index_section; |
| 3720 | indx = elf_section_data (osec)->dynindx; |
| 3721 | } |
| 3722 | |
| 3723 | /* FIXME: we really should be able to link non-pic |
| 3724 | shared libraries. */ |
| 3725 | if (indx == 0) |
| 3726 | { |
| 3727 | BFD_FAIL (); |
| 3728 | (*_bfd_error_handler) |
| 3729 | (_("%B: probably compiled without -fPIC?"), |
| 3730 | input_bfd); |
| 3731 | bfd_set_error (bfd_error_bad_value); |
| 3732 | return FALSE; |
| 3733 | } |
| 3734 | } |
| 3735 | |
| 3736 | outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, indx, |
| 3737 | r_type); |
| 3738 | } |
| 3739 | } |
| 3740 | |
| 3741 | tilegx_elf_append_rela (output_bfd, sreloc, &outrel); |
| 3742 | |
| 3743 | /* This reloc will be computed at runtime, so there's no |
| 3744 | need to do anything now. */ |
| 3745 | if (! relocate) |
| 3746 | continue; |
| 3747 | } |
| 3748 | break; |
| 3749 | |
| 3750 | case R_TILEGX_IMM16_X0_HW0_TLS_LE: |
| 3751 | case R_TILEGX_IMM16_X1_HW0_TLS_LE: |
| 3752 | case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE: |
| 3753 | case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE: |
| 3754 | case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE: |
| 3755 | case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE: |
| 3756 | if (info->shared) |
| 3757 | { |
| 3758 | Elf_Internal_Rela outrel; |
| 3759 | bfd_boolean skip; |
| 3760 | |
| 3761 | BFD_ASSERT (sreloc != NULL); |
| 3762 | skip = FALSE; |
| 3763 | outrel.r_offset = |
| 3764 | _bfd_elf_section_offset (output_bfd, info, input_section, |
| 3765 | rel->r_offset); |
| 3766 | if (outrel.r_offset == (bfd_vma) -1) |
| 3767 | skip = TRUE; |
| 3768 | else if (outrel.r_offset == (bfd_vma) -2) |
| 3769 | skip = TRUE; |
| 3770 | outrel.r_offset += (input_section->output_section->vma |
| 3771 | + input_section->output_offset); |
| 3772 | if (skip) |
| 3773 | memset (&outrel, 0, sizeof outrel); |
| 3774 | else |
| 3775 | { |
| 3776 | outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, r_type); |
| 3777 | outrel.r_addend = relocation - dtpoff_base (info) |
| 3778 | + rel->r_addend; |
| 3779 | } |
| 3780 | |
| 3781 | tilegx_elf_append_rela (output_bfd, sreloc, &outrel); |
| 3782 | continue; |
| 3783 | } |
| 3784 | relocation = tpoff (info, relocation); |
| 3785 | break; |
| 3786 | |
| 3787 | case R_TILEGX_IMM16_X0_HW0_TLS_GD: |
| 3788 | case R_TILEGX_IMM16_X1_HW0_TLS_GD: |
| 3789 | case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: |
| 3790 | case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: |
| 3791 | case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: |
| 3792 | case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: |
| 3793 | case R_TILEGX_IMM16_X0_HW0_TLS_IE: |
| 3794 | case R_TILEGX_IMM16_X1_HW0_TLS_IE: |
| 3795 | case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: |
| 3796 | case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: |
| 3797 | case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: |
| 3798 | case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: |
| 3799 | r_type = tilegx_elf_tls_transition (info, r_type, h == NULL, |
| 3800 | input_section->sec_flg0); |
| 3801 | tls_type = GOT_UNKNOWN; |
| 3802 | if (h == NULL && local_got_offsets) |
| 3803 | tls_type = |
| 3804 | _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx]; |
| 3805 | else if (h != NULL) |
| 3806 | { |
| 3807 | tls_type = tilegx_elf_hash_entry(h)->tls_type; |
| 3808 | if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE) |
| 3809 | r_type = (!input_section->sec_flg0 |
| 3810 | ? tilegx_tls_translate_to_le (r_type) |
| 3811 | : tilegx_tls_translate_to_ie (r_type)); |
| 3812 | } |
| 3813 | |
| 3814 | if (tls_type == GOT_TLS_IE) |
| 3815 | r_type = tilegx_tls_translate_to_ie (r_type); |
| 3816 | |
| 3817 | if (r_type == R_TILEGX_IMM16_X0_HW0_TLS_LE |
| 3818 | || r_type == R_TILEGX_IMM16_X1_HW0_TLS_LE |
| 3819 | || r_type == R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE |
| 3820 | || r_type == R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE |
| 3821 | || r_type == R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE |
| 3822 | || r_type == R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE) |
| 3823 | { |
| 3824 | relocation = tpoff (info, relocation); |
| 3825 | break; |
| 3826 | } |
| 3827 | |
| 3828 | if (h != NULL) |
| 3829 | { |
| 3830 | off = h->got.offset; |
| 3831 | h->got.offset |= 1; |
| 3832 | } |
| 3833 | else |
| 3834 | { |
| 3835 | BFD_ASSERT (local_got_offsets != NULL); |
| 3836 | off = local_got_offsets[r_symndx]; |
| 3837 | local_got_offsets[r_symndx] |= 1; |
| 3838 | } |
| 3839 | |
| 3840 | if (htab->elf.sgot == NULL) |
| 3841 | abort (); |
| 3842 | |
| 3843 | if ((off & 1) != 0) |
| 3844 | off &= ~1; |
| 3845 | else |
| 3846 | { |
| 3847 | Elf_Internal_Rela outrel; |
| 3848 | int indx = 0; |
| 3849 | bfd_boolean need_relocs = FALSE; |
| 3850 | |
| 3851 | if (htab->elf.srelgot == NULL) |
| 3852 | abort (); |
| 3853 | |
| 3854 | if (h != NULL) |
| 3855 | { |
| 3856 | bfd_boolean dyn; |
| 3857 | dyn = htab->elf.dynamic_sections_created; |
| 3858 | |
| 3859 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
| 3860 | && (!info->shared |
| 3861 | || !SYMBOL_REFERENCES_LOCAL (info, h))) |
| 3862 | { |
| 3863 | indx = h->dynindx; |
| 3864 | } |
| 3865 | } |
| 3866 | |
| 3867 | /* The GOT entries have not been initialized yet. Do it |
| 3868 | now, and emit any relocations. */ |
| 3869 | if ((info->shared || indx != 0) |
| 3870 | && (h == NULL |
| 3871 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
| 3872 | || h->root.type != bfd_link_hash_undefweak)) |
| 3873 | need_relocs = TRUE; |
| 3874 | |
| 3875 | switch (r_type) |
| 3876 | { |
| 3877 | case R_TILEGX_IMM16_X0_HW0_TLS_IE: |
| 3878 | case R_TILEGX_IMM16_X1_HW0_TLS_IE: |
| 3879 | case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE: |
| 3880 | case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE: |
| 3881 | case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE: |
| 3882 | case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE: |
| 3883 | if (need_relocs) { |
| 3884 | TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, |
| 3885 | htab->elf.sgot->contents + off); |
| 3886 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
| 3887 | + htab->elf.sgot->output_offset + off); |
| 3888 | outrel.r_addend = 0; |
| 3889 | if (indx == 0) |
| 3890 | outrel.r_addend = relocation - dtpoff_base (info); |
| 3891 | outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx, |
| 3892 | TILEGX_ELF_TPOFF_RELOC (htab)); |
| 3893 | tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); |
| 3894 | } else { |
| 3895 | TILEGX_ELF_PUT_WORD (htab, output_bfd, |
| 3896 | tpoff (info, relocation), |
| 3897 | htab->elf.sgot->contents + off); |
| 3898 | } |
| 3899 | break; |
| 3900 | |
| 3901 | case R_TILEGX_IMM16_X0_HW0_TLS_GD: |
| 3902 | case R_TILEGX_IMM16_X1_HW0_TLS_GD: |
| 3903 | case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD: |
| 3904 | case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD: |
| 3905 | case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD: |
| 3906 | case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD: |
| 3907 | if (need_relocs) { |
| 3908 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
| 3909 | + htab->elf.sgot->output_offset + off); |
| 3910 | outrel.r_addend = 0; |
| 3911 | outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx, |
| 3912 | TILEGX_ELF_DTPMOD_RELOC (htab)); |
| 3913 | TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, |
| 3914 | htab->elf.sgot->contents + off); |
| 3915 | tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); |
| 3916 | if (indx == 0) |
| 3917 | { |
| 3918 | BFD_ASSERT (! unresolved_reloc); |
| 3919 | TILEGX_ELF_PUT_WORD (htab, output_bfd, |
| 3920 | relocation - dtpoff_base (info), |
| 3921 | (htab->elf.sgot->contents + off + |
| 3922 | TILEGX_ELF_WORD_BYTES (htab))); |
| 3923 | } |
| 3924 | else |
| 3925 | { |
| 3926 | TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, |
| 3927 | (htab->elf.sgot->contents + off + |
| 3928 | TILEGX_ELF_WORD_BYTES (htab))); |
| 3929 | outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx, |
| 3930 | TILEGX_ELF_DTPOFF_RELOC (htab)); |
| 3931 | outrel.r_offset += TILEGX_ELF_WORD_BYTES (htab); |
| 3932 | tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel); |
| 3933 | } |
| 3934 | } |
| 3935 | |
| 3936 | else { |
| 3937 | /* If we are not emitting relocations for a |
| 3938 | general dynamic reference, then we must be in a |
| 3939 | static link or an executable link with the |
| 3940 | symbol binding locally. Mark it as belonging |
| 3941 | to module 1, the executable. */ |
| 3942 | TILEGX_ELF_PUT_WORD (htab, output_bfd, 1, |
| 3943 | htab->elf.sgot->contents + off ); |
| 3944 | TILEGX_ELF_PUT_WORD (htab, output_bfd, |
| 3945 | relocation - dtpoff_base (info), |
| 3946 | htab->elf.sgot->contents + off + |
| 3947 | TILEGX_ELF_WORD_BYTES (htab)); |
| 3948 | } |
| 3949 | break; |
| 3950 | } |
| 3951 | } |
| 3952 | |
| 3953 | if (off >= (bfd_vma) -2) |
| 3954 | abort (); |
| 3955 | |
| 3956 | relocation = off - got_base; |
| 3957 | unresolved_reloc = FALSE; |
| 3958 | howto = tilegx_elf_howto_table + r_type; |
| 3959 | break; |
| 3960 | |
| 3961 | default: |
| 3962 | break; |
| 3963 | } |
| 3964 | |
| 3965 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
| 3966 | because such sections are not SEC_ALLOC and thus ld.so will |
| 3967 | not process them. */ |
| 3968 | if (unresolved_reloc |
| 3969 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
| 3970 | && h->def_dynamic) |
| 3971 | && _bfd_elf_section_offset (output_bfd, info, input_section, |
| 3972 | rel->r_offset) != (bfd_vma) -1) |
| 3973 | (*_bfd_error_handler) |
| 3974 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
| 3975 | input_bfd, |
| 3976 | input_section, |
| 3977 | (long) rel->r_offset, |
| 3978 | howto->name, |
| 3979 | h->root.root.string); |
| 3980 | |
| 3981 | r = bfd_reloc_continue; |
| 3982 | |
| 3983 | /* Get the operand creation function, if any. */ |
| 3984 | create_func = reloc_to_create_func[r_type]; |
| 3985 | if (create_func == NULL) |
| 3986 | { |
| 3987 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 3988 | contents, rel->r_offset, |
| 3989 | relocation, rel->r_addend); |
| 3990 | } |
| 3991 | else |
| 3992 | { |
| 3993 | if (howto->pc_relative) |
| 3994 | { |
| 3995 | relocation -= |
| 3996 | input_section->output_section->vma + input_section->output_offset; |
| 3997 | if (howto->pcrel_offset) |
| 3998 | relocation -= rel->r_offset; |
| 3999 | } |
| 4000 | |
| 4001 | bfd_byte *data; |
| 4002 | |
| 4003 | /* Add the relocation addend if any to the final target value */ |
| 4004 | relocation += rel->r_addend; |
| 4005 | |
| 4006 | /* Do basic range checking */ |
| 4007 | r = bfd_check_overflow (howto->complain_on_overflow, |
| 4008 | howto->bitsize, |
| 4009 | howto->rightshift, |
| 4010 | TILEGX_ELF_WORD_BYTES (htab) * 8, |
| 4011 | relocation); |
| 4012 | |
| 4013 | /* |
| 4014 | * Write the relocated value out into the raw section data. |
| 4015 | * Don't put a relocation out in the .rela section. |
| 4016 | */ |
| 4017 | tilegx_bundle_bits mask = create_func(-1); |
| 4018 | tilegx_bundle_bits value = create_func(relocation >> howto->rightshift); |
| 4019 | |
| 4020 | /* Only touch bytes while the mask is not 0, so we |
| 4021 | don't write to out of bounds memory if this is actually |
| 4022 | a 16-bit switch instruction. */ |
| 4023 | for (data = contents + rel->r_offset; mask != 0; data++) |
| 4024 | { |
| 4025 | bfd_byte byte_mask = (bfd_byte)mask; |
| 4026 | *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask); |
| 4027 | mask >>= 8; |
| 4028 | value >>= 8; |
| 4029 | } |
| 4030 | } |
| 4031 | |
| 4032 | if (r != bfd_reloc_ok) |
| 4033 | { |
| 4034 | const char *msg = NULL; |
| 4035 | |
| 4036 | switch (r) |
| 4037 | { |
| 4038 | case bfd_reloc_overflow: |
| 4039 | r = info->callbacks->reloc_overflow |
| 4040 | (info, (h ? &h->root : NULL), name, howto->name, |
| 4041 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); |
| 4042 | break; |
| 4043 | |
| 4044 | case bfd_reloc_undefined: |
| 4045 | r = info->callbacks->undefined_symbol |
| 4046 | (info, name, input_bfd, input_section, rel->r_offset, |
| 4047 | TRUE); |
| 4048 | break; |
| 4049 | |
| 4050 | case bfd_reloc_outofrange: |
| 4051 | msg = _("internal error: out of range error"); |
| 4052 | break; |
| 4053 | |
| 4054 | case bfd_reloc_notsupported: |
| 4055 | msg = _("internal error: unsupported relocation error"); |
| 4056 | break; |
| 4057 | |
| 4058 | case bfd_reloc_dangerous: |
| 4059 | msg = _("internal error: dangerous relocation"); |
| 4060 | break; |
| 4061 | |
| 4062 | default: |
| 4063 | msg = _("internal error: unknown error"); |
| 4064 | break; |
| 4065 | } |
| 4066 | |
| 4067 | if (msg) |
| 4068 | r = info->callbacks->warning |
| 4069 | (info, msg, name, input_bfd, input_section, rel->r_offset); |
| 4070 | |
| 4071 | if (! r) |
| 4072 | return FALSE; |
| 4073 | } |
| 4074 | } |
| 4075 | |
| 4076 | return TRUE; |
| 4077 | } |
| 4078 | |
| 4079 | /* Finish up dynamic symbol handling. We set the contents of various |
| 4080 | dynamic sections here. */ |
| 4081 | |
| 4082 | bfd_boolean |
| 4083 | tilegx_elf_finish_dynamic_symbol (bfd *output_bfd, |
| 4084 | struct bfd_link_info *info, |
| 4085 | struct elf_link_hash_entry *h, |
| 4086 | Elf_Internal_Sym *sym) |
| 4087 | { |
| 4088 | struct tilegx_elf_link_hash_table *htab; |
| 4089 | |
| 4090 | htab = tilegx_elf_hash_table (info); |
| 4091 | BFD_ASSERT (htab != NULL); |
| 4092 | |
| 4093 | if (h->plt.offset != (bfd_vma) -1) |
| 4094 | { |
| 4095 | asection *splt; |
| 4096 | asection *srela; |
| 4097 | asection *sgotplt; |
| 4098 | Elf_Internal_Rela rela; |
| 4099 | bfd_byte *loc; |
| 4100 | bfd_vma r_offset; |
| 4101 | const struct elf_backend_data *bed = get_elf_backend_data (output_bfd); |
| 4102 | |
| 4103 | |
| 4104 | int rela_index; |
| 4105 | |
| 4106 | /* This symbol has an entry in the PLT. Set it up. */ |
| 4107 | |
| 4108 | BFD_ASSERT (h->dynindx != -1); |
| 4109 | |
| 4110 | splt = htab->elf.splt; |
| 4111 | srela = htab->elf.srelplt; |
| 4112 | sgotplt = htab->elf.sgotplt; |
| 4113 | |
| 4114 | if (splt == NULL || srela == NULL) |
| 4115 | abort (); |
| 4116 | |
| 4117 | /* Fill in the entry in the procedure linkage table. */ |
| 4118 | rela_index = tilegx_plt_entry_build (output_bfd, htab, splt, sgotplt, |
| 4119 | h->plt.offset, &r_offset); |
| 4120 | |
| 4121 | /* Fill in the entry in the global offset table, which initially points |
| 4122 | to the beginning of the plt. */ |
| 4123 | TILEGX_ELF_PUT_WORD (htab, output_bfd, |
| 4124 | splt->output_section->vma + splt->output_offset, |
| 4125 | sgotplt->contents + r_offset); |
| 4126 | |
| 4127 | /* Fill in the entry in the .rela.plt section. */ |
| 4128 | rela.r_offset = (sgotplt->output_section->vma |
| 4129 | + sgotplt->output_offset |
| 4130 | + r_offset); |
| 4131 | rela.r_addend = 0; |
| 4132 | rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_JMP_SLOT); |
| 4133 | |
| 4134 | loc = srela->contents + rela_index * TILEGX_ELF_RELA_BYTES (htab); |
| 4135 | bed->s->swap_reloca_out (output_bfd, &rela, loc); |
| 4136 | |
| 4137 | if (!h->def_regular) |
| 4138 | { |
| 4139 | /* Mark the symbol as undefined, rather than as defined in |
| 4140 | the .plt section. Leave the value alone. */ |
| 4141 | sym->st_shndx = SHN_UNDEF; |
| 4142 | /* If the symbol is weak, we do need to clear the value. |
| 4143 | Otherwise, the PLT entry would provide a definition for |
| 4144 | the symbol even if the symbol wasn't defined anywhere, |
| 4145 | and so the symbol would never be NULL. */ |
| 4146 | if (!h->ref_regular_nonweak) |
| 4147 | sym->st_value = 0; |
| 4148 | } |
| 4149 | } |
| 4150 | |
| 4151 | if (h->got.offset != (bfd_vma) -1 |
| 4152 | && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_GD |
| 4153 | && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_IE) |
| 4154 | { |
| 4155 | asection *sgot; |
| 4156 | asection *srela; |
| 4157 | Elf_Internal_Rela rela; |
| 4158 | |
| 4159 | /* This symbol has an entry in the GOT. Set it up. */ |
| 4160 | |
| 4161 | sgot = htab->elf.sgot; |
| 4162 | srela = htab->elf.srelgot; |
| 4163 | BFD_ASSERT (sgot != NULL && srela != NULL); |
| 4164 | |
| 4165 | rela.r_offset = (sgot->output_section->vma |
| 4166 | + sgot->output_offset |
| 4167 | + (h->got.offset &~ (bfd_vma) 1)); |
| 4168 | |
| 4169 | /* If this is a -Bsymbolic link, and the symbol is defined |
| 4170 | locally, we just want to emit a RELATIVE reloc. Likewise if |
| 4171 | the symbol was forced to be local because of a version file. |
| 4172 | The entry in the global offset table will already have been |
| 4173 | initialized in the relocate_section function. */ |
| 4174 | if (info->shared |
| 4175 | && (info->symbolic || h->dynindx == -1) |
| 4176 | && h->def_regular) |
| 4177 | { |
| 4178 | asection *sec = h->root.u.def.section; |
| 4179 | rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE); |
| 4180 | rela.r_addend = (h->root.u.def.value |
| 4181 | + sec->output_section->vma |
| 4182 | + sec->output_offset); |
| 4183 | } |
| 4184 | else |
| 4185 | { |
| 4186 | rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_GLOB_DAT); |
| 4187 | rela.r_addend = 0; |
| 4188 | } |
| 4189 | |
| 4190 | TILEGX_ELF_PUT_WORD (htab, output_bfd, 0, |
| 4191 | sgot->contents + (h->got.offset & ~(bfd_vma) 1)); |
| 4192 | tilegx_elf_append_rela (output_bfd, srela, &rela); |
| 4193 | } |
| 4194 | |
| 4195 | if (h->needs_copy) |
| 4196 | { |
| 4197 | asection *s; |
| 4198 | Elf_Internal_Rela rela; |
| 4199 | |
| 4200 | /* This symbols needs a copy reloc. Set it up. */ |
| 4201 | BFD_ASSERT (h->dynindx != -1); |
| 4202 | |
| 4203 | s = htab->srelbss; |
| 4204 | BFD_ASSERT (s != NULL); |
| 4205 | |
| 4206 | rela.r_offset = (h->root.u.def.value |
| 4207 | + h->root.u.def.section->output_section->vma |
| 4208 | + h->root.u.def.section->output_offset); |
| 4209 | rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_COPY); |
| 4210 | rela.r_addend = 0; |
| 4211 | tilegx_elf_append_rela (output_bfd, s, &rela); |
| 4212 | } |
| 4213 | |
| 4214 | /* Mark some specially defined symbols as absolute. */ |
| 4215 | if (h == htab->elf.hdynamic |
| 4216 | || (h == htab->elf.hgot || h == htab->elf.hplt)) |
| 4217 | sym->st_shndx = SHN_ABS; |
| 4218 | |
| 4219 | return TRUE; |
| 4220 | } |
| 4221 | |
| 4222 | /* Finish up the dynamic sections. */ |
| 4223 | |
| 4224 | static bfd_boolean |
| 4225 | tilegx_finish_dyn (bfd *output_bfd, struct bfd_link_info *info, |
| 4226 | bfd *dynobj, asection *sdyn, |
| 4227 | asection *splt ATTRIBUTE_UNUSED) |
| 4228 | { |
| 4229 | struct tilegx_elf_link_hash_table *htab; |
| 4230 | const struct elf_backend_data *bed; |
| 4231 | bfd_byte *dyncon, *dynconend; |
| 4232 | size_t dynsize; |
| 4233 | |
| 4234 | htab = tilegx_elf_hash_table (info); |
| 4235 | BFD_ASSERT (htab != NULL); |
| 4236 | bed = get_elf_backend_data (output_bfd); |
| 4237 | dynsize = bed->s->sizeof_dyn; |
| 4238 | dynconend = sdyn->contents + sdyn->size; |
| 4239 | |
| 4240 | for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize) |
| 4241 | { |
| 4242 | Elf_Internal_Dyn dyn; |
| 4243 | asection *s; |
| 4244 | |
| 4245 | bed->s->swap_dyn_in (dynobj, dyncon, &dyn); |
| 4246 | |
| 4247 | switch (dyn.d_tag) |
| 4248 | { |
| 4249 | case DT_PLTGOT: |
| 4250 | s = htab->elf.sgotplt; |
| 4251 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 4252 | break; |
| 4253 | case DT_JMPREL: |
| 4254 | s = htab->elf.srelplt; |
| 4255 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 4256 | break; |
| 4257 | case DT_PLTRELSZ: |
| 4258 | s = htab->elf.srelplt; |
| 4259 | dyn.d_un.d_val = s->size; |
| 4260 | break; |
| 4261 | default: |
| 4262 | continue; |
| 4263 | } |
| 4264 | |
| 4265 | bed->s->swap_dyn_out (output_bfd, &dyn, dyncon); |
| 4266 | } |
| 4267 | return TRUE; |
| 4268 | } |
| 4269 | |
| 4270 | bfd_boolean |
| 4271 | tilegx_elf_finish_dynamic_sections (bfd *output_bfd, |
| 4272 | struct bfd_link_info *info) |
| 4273 | { |
| 4274 | bfd *dynobj; |
| 4275 | asection *sdyn; |
| 4276 | struct tilegx_elf_link_hash_table *htab; |
| 4277 | size_t pad_size; |
| 4278 | |
| 4279 | htab = tilegx_elf_hash_table (info); |
| 4280 | BFD_ASSERT (htab != NULL); |
| 4281 | dynobj = htab->elf.dynobj; |
| 4282 | |
| 4283 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
| 4284 | |
| 4285 | if (elf_hash_table (info)->dynamic_sections_created) |
| 4286 | { |
| 4287 | asection *splt; |
| 4288 | bfd_boolean ret; |
| 4289 | |
| 4290 | splt = htab->elf.splt; |
| 4291 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
| 4292 | |
| 4293 | ret = tilegx_finish_dyn (output_bfd, info, dynobj, sdyn, splt); |
| 4294 | |
| 4295 | if (ret != TRUE) |
| 4296 | return ret; |
| 4297 | |
| 4298 | /* Fill in the head and tail entries in the procedure linkage table. */ |
| 4299 | if (splt->size > 0) |
| 4300 | { |
| 4301 | memcpy (splt->contents, |
| 4302 | ABI_64_P (output_bfd) ? |
| 4303 | tilegx64_plt0_entry : tilegx32_plt0_entry, |
| 4304 | PLT_HEADER_SIZE); |
| 4305 | |
| 4306 | memcpy (splt->contents + splt->size |
| 4307 | - PLT_ENTRY_SIZE + PLT_HEADER_SIZE, |
| 4308 | ABI_64_P (output_bfd) ? |
| 4309 | tilegx64_plt_tail_entry : tilegx32_plt_tail_entry, |
| 4310 | PLT_TAIL_SIZE); |
| 4311 | /* Add padding so that the plt section is a multiple of its |
| 4312 | entry size. */ |
| 4313 | pad_size = PLT_ENTRY_SIZE - PLT_HEADER_SIZE - PLT_TAIL_SIZE; |
| 4314 | memset (splt->contents + splt->size - pad_size, 0, pad_size); |
| 4315 | } |
| 4316 | |
| 4317 | elf_section_data (splt->output_section)->this_hdr.sh_entsize |
| 4318 | = PLT_ENTRY_SIZE; |
| 4319 | } |
| 4320 | |
| 4321 | if (htab->elf.sgotplt) |
| 4322 | { |
| 4323 | if (bfd_is_abs_section (htab->elf.sgotplt->output_section)) |
| 4324 | { |
| 4325 | (*_bfd_error_handler) |
| 4326 | (_("discarded output section: `%A'"), htab->elf.sgotplt); |
| 4327 | return FALSE; |
| 4328 | } |
| 4329 | |
| 4330 | if (htab->elf.sgotplt->size > 0) |
| 4331 | { |
| 4332 | /* Write the first two entries in .got.plt, needed for the dynamic |
| 4333 | linker. */ |
| 4334 | TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) -1, |
| 4335 | htab->elf.sgotplt->contents); |
| 4336 | TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) 0, |
| 4337 | htab->elf.sgotplt->contents |
| 4338 | + GOT_ENTRY_SIZE (htab)); |
| 4339 | } |
| 4340 | |
| 4341 | elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = |
| 4342 | GOT_ENTRY_SIZE (htab); |
| 4343 | } |
| 4344 | |
| 4345 | if (htab->elf.sgot) |
| 4346 | { |
| 4347 | if (htab->elf.sgot->size > 0) |
| 4348 | { |
| 4349 | /* Set the first entry in the global offset table to the address of |
| 4350 | the dynamic section. */ |
| 4351 | bfd_vma val = (sdyn ? |
| 4352 | sdyn->output_section->vma + sdyn->output_offset : |
| 4353 | 0); |
| 4354 | TILEGX_ELF_PUT_WORD (htab, output_bfd, val, |
| 4355 | htab->elf.sgot->contents); |
| 4356 | } |
| 4357 | |
| 4358 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = |
| 4359 | GOT_ENTRY_SIZE (htab); |
| 4360 | } |
| 4361 | |
| 4362 | return TRUE; |
| 4363 | } |
| 4364 | |
| 4365 | \f |
| 4366 | |
| 4367 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
| 4368 | or (bfd_vma) -1 if it should not be included. */ |
| 4369 | |
| 4370 | bfd_vma |
| 4371 | tilegx_elf_plt_sym_val (bfd_vma i, const asection *plt, |
| 4372 | const arelent *rel ATTRIBUTE_UNUSED) |
| 4373 | { |
| 4374 | return plt->vma + PLT_HEADER_SIZE + i * PLT_ENTRY_SIZE; |
| 4375 | } |
| 4376 | |
| 4377 | enum elf_reloc_type_class |
| 4378 | tilegx_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 4379 | const asection *rel_sec ATTRIBUTE_UNUSED, |
| 4380 | const Elf_Internal_Rela *rela) |
| 4381 | { |
| 4382 | switch ((int) TILEGX_ELF_R_TYPE (rela->r_info)) |
| 4383 | { |
| 4384 | case R_TILEGX_RELATIVE: |
| 4385 | return reloc_class_relative; |
| 4386 | case R_TILEGX_JMP_SLOT: |
| 4387 | return reloc_class_plt; |
| 4388 | case R_TILEGX_COPY: |
| 4389 | return reloc_class_copy; |
| 4390 | default: |
| 4391 | return reloc_class_normal; |
| 4392 | } |
| 4393 | } |
| 4394 | |
| 4395 | int |
| 4396 | tilegx_additional_program_headers (bfd *abfd, |
| 4397 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
| 4398 | { |
| 4399 | /* Each .intrpt section specified by the user adds another PT_LOAD |
| 4400 | header since the sections are discontiguous. */ |
| 4401 | static const char intrpt_sections[4][9] = |
| 4402 | { |
| 4403 | ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3" |
| 4404 | }; |
| 4405 | int count = 0; |
| 4406 | int i; |
| 4407 | |
| 4408 | for (i = 0; i < 4; i++) |
| 4409 | { |
| 4410 | asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]); |
| 4411 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) |
| 4412 | ++count; |
| 4413 | } |
| 4414 | |
| 4415 | /* Add four "padding" headers in to leave room in case a custom linker |
| 4416 | script does something fancy. Otherwise ld complains that it ran |
| 4417 | out of program headers and refuses to link. */ |
| 4418 | count += 4; |
| 4419 | |
| 4420 | return count; |
| 4421 | } |
| 4422 | |
| 4423 | |
| 4424 | bfd_boolean |
| 4425 | _bfd_tilegx_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
| 4426 | { |
| 4427 | const char *targ1 = bfd_get_target (ibfd); |
| 4428 | const char *targ2 = bfd_get_target (obfd); |
| 4429 | |
| 4430 | if (strcmp (targ1, targ2) != 0) |
| 4431 | { |
| 4432 | (*_bfd_error_handler) |
| 4433 | (_("%B: Cannot link together %s and %s objects."), |
| 4434 | ibfd, targ1, targ2); |
| 4435 | bfd_set_error (bfd_error_bad_value); |
| 4436 | return FALSE; |
| 4437 | } |
| 4438 | |
| 4439 | return TRUE; |
| 4440 | } |