| 1 | /* 32-bit ELF support for Nios II. |
| 2 | Copyright (C) 2012-2017 Free Software Foundation, Inc. |
| 3 | Contributed by Nigel Gray (ngray@altera.com). |
| 4 | Contributed by Mentor Graphics, Inc. |
| 5 | |
| 6 | This file is part of BFD, the Binary File Descriptor library. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 3 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 21 | MA 02110-1301, USA. */ |
| 22 | |
| 23 | /* This file handles Altera Nios II ELF targets. */ |
| 24 | |
| 25 | #include "sysdep.h" |
| 26 | #include "bfd.h" |
| 27 | #include "libbfd.h" |
| 28 | #include "bfdlink.h" |
| 29 | #include "genlink.h" |
| 30 | #include "elf-bfd.h" |
| 31 | #include "elf/nios2.h" |
| 32 | #include "opcode/nios2.h" |
| 33 | #include "elf32-nios2.h" |
| 34 | |
| 35 | /* Use RELA relocations. */ |
| 36 | #ifndef USE_RELA |
| 37 | #define USE_RELA |
| 38 | #endif |
| 39 | |
| 40 | #ifdef USE_REL |
| 41 | #undef USE_REL |
| 42 | #endif |
| 43 | |
| 44 | /* Forward declarations. */ |
| 45 | static bfd_reloc_status_type nios2_elf32_ignore_reloc |
| 46 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 47 | static bfd_reloc_status_type nios2_elf32_hi16_relocate |
| 48 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 49 | static bfd_reloc_status_type nios2_elf32_lo16_relocate |
| 50 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 51 | static bfd_reloc_status_type nios2_elf32_hiadj16_relocate |
| 52 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 53 | static bfd_reloc_status_type nios2_elf32_pcrel_lo16_relocate |
| 54 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 55 | static bfd_reloc_status_type nios2_elf32_pcrel_hiadj16_relocate |
| 56 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 57 | static bfd_reloc_status_type nios2_elf32_pcrel16_relocate |
| 58 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 59 | static bfd_reloc_status_type nios2_elf32_call26_relocate |
| 60 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 61 | static bfd_reloc_status_type nios2_elf32_gprel_relocate |
| 62 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 63 | static bfd_reloc_status_type nios2_elf32_ujmp_relocate |
| 64 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 65 | static bfd_reloc_status_type nios2_elf32_cjmp_relocate |
| 66 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 67 | static bfd_reloc_status_type nios2_elf32_callr_relocate |
| 68 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 69 | |
| 70 | /* Target vector. */ |
| 71 | extern const bfd_target nios2_elf32_le_vec; |
| 72 | extern const bfd_target nios2_elf32_be_vec; |
| 73 | |
| 74 | /* Offset of tp and dtp pointers from start of TLS block. */ |
| 75 | #define TP_OFFSET 0x7000 |
| 76 | #define DTP_OFFSET 0x8000 |
| 77 | |
| 78 | /* The relocation tables used for SHT_REL sections. There are separate |
| 79 | tables for R1 and R2 encodings. */ |
| 80 | static reloc_howto_type elf_nios2_r1_howto_table_rel[] = { |
| 81 | /* No relocation. */ |
| 82 | HOWTO (R_NIOS2_NONE, /* type */ |
| 83 | 0, /* rightshift */ |
| 84 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
| 85 | 0, /* bitsize */ |
| 86 | FALSE, /* pc_relative */ |
| 87 | 0, /* bitpos */ |
| 88 | complain_overflow_dont, /* complain_on_overflow */ |
| 89 | bfd_elf_generic_reloc, /* special_function */ |
| 90 | "R_NIOS2_NONE", /* name */ |
| 91 | FALSE, /* partial_inplace */ |
| 92 | 0, /* src_mask */ |
| 93 | 0, /* dst_mask */ |
| 94 | FALSE), /* pcrel_offset */ |
| 95 | |
| 96 | /* 16-bit signed immediate relocation. */ |
| 97 | HOWTO (R_NIOS2_S16, /* type */ |
| 98 | 0, /* rightshift */ |
| 99 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 100 | 16, /* bitsize */ |
| 101 | FALSE, /* pc_relative */ |
| 102 | 6, /* bitpos */ |
| 103 | complain_overflow_signed, /* complain on overflow */ |
| 104 | bfd_elf_generic_reloc, /* special function */ |
| 105 | "R_NIOS2_S16", /* name */ |
| 106 | FALSE, /* partial_inplace */ |
| 107 | 0x003fffc0, /* src_mask */ |
| 108 | 0x003fffc0, /* dest_mask */ |
| 109 | FALSE), /* pcrel_offset */ |
| 110 | |
| 111 | /* 16-bit unsigned immediate relocation. */ |
| 112 | HOWTO (R_NIOS2_U16, /* type */ |
| 113 | 0, /* rightshift */ |
| 114 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 115 | 16, /* bitsize */ |
| 116 | FALSE, /* pc_relative */ |
| 117 | 6, /* bitpos */ |
| 118 | complain_overflow_unsigned, /* complain on overflow */ |
| 119 | bfd_elf_generic_reloc, /* special function */ |
| 120 | "R_NIOS2_U16", /* name */ |
| 121 | FALSE, /* partial_inplace */ |
| 122 | 0x003fffc0, /* src_mask */ |
| 123 | 0x003fffc0, /* dest_mask */ |
| 124 | FALSE), /* pcrel_offset */ |
| 125 | |
| 126 | HOWTO (R_NIOS2_PCREL16, /* type */ |
| 127 | 0, /* rightshift */ |
| 128 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 129 | 16, /* bitsize */ |
| 130 | TRUE, /* pc_relative */ |
| 131 | 6, /* bitpos */ |
| 132 | complain_overflow_signed, /* complain on overflow */ |
| 133 | nios2_elf32_pcrel16_relocate, /* special function */ |
| 134 | "R_NIOS2_PCREL16", /* name */ |
| 135 | FALSE, /* partial_inplace */ |
| 136 | 0x003fffc0, /* src_mask */ |
| 137 | 0x003fffc0, /* dest_mask */ |
| 138 | TRUE), /* pcrel_offset */ |
| 139 | |
| 140 | HOWTO (R_NIOS2_CALL26, /* type */ |
| 141 | 2, /* rightshift */ |
| 142 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 143 | 26, /* bitsize */ |
| 144 | FALSE, /* pc_relative */ |
| 145 | 6, /* bitpos */ |
| 146 | complain_overflow_dont, /* complain on overflow */ |
| 147 | nios2_elf32_call26_relocate, /* special function */ |
| 148 | "R_NIOS2_CALL26", /* name */ |
| 149 | FALSE, /* partial_inplace */ |
| 150 | 0xffffffc0, /* src_mask */ |
| 151 | 0xffffffc0, /* dst_mask */ |
| 152 | FALSE), /* pcrel_offset */ |
| 153 | |
| 154 | HOWTO (R_NIOS2_IMM5, |
| 155 | 0, |
| 156 | 2, |
| 157 | 5, |
| 158 | FALSE, |
| 159 | 6, |
| 160 | complain_overflow_bitfield, |
| 161 | bfd_elf_generic_reloc, |
| 162 | "R_NIOS2_IMM5", |
| 163 | FALSE, |
| 164 | 0x000007c0, |
| 165 | 0x000007c0, |
| 166 | FALSE), |
| 167 | |
| 168 | HOWTO (R_NIOS2_CACHE_OPX, |
| 169 | 0, |
| 170 | 2, |
| 171 | 5, |
| 172 | FALSE, |
| 173 | 22, |
| 174 | complain_overflow_bitfield, |
| 175 | bfd_elf_generic_reloc, |
| 176 | "R_NIOS2_CACHE_OPX", |
| 177 | FALSE, |
| 178 | 0x07c00000, |
| 179 | 0x07c00000, |
| 180 | FALSE), |
| 181 | |
| 182 | HOWTO (R_NIOS2_IMM6, |
| 183 | 0, |
| 184 | 2, |
| 185 | 6, |
| 186 | FALSE, |
| 187 | 6, |
| 188 | complain_overflow_bitfield, |
| 189 | bfd_elf_generic_reloc, |
| 190 | "R_NIOS2_IMM6", |
| 191 | FALSE, |
| 192 | 0x00000fc0, |
| 193 | 0x00000fc0, |
| 194 | FALSE), |
| 195 | |
| 196 | HOWTO (R_NIOS2_IMM8, |
| 197 | 0, |
| 198 | 2, |
| 199 | 8, |
| 200 | FALSE, |
| 201 | 6, |
| 202 | complain_overflow_bitfield, |
| 203 | bfd_elf_generic_reloc, |
| 204 | "R_NIOS2_IMM8", |
| 205 | FALSE, |
| 206 | 0x00003fc0, |
| 207 | 0x00003fc0, |
| 208 | FALSE), |
| 209 | |
| 210 | HOWTO (R_NIOS2_HI16, |
| 211 | 0, |
| 212 | 2, |
| 213 | 32, |
| 214 | FALSE, |
| 215 | 6, |
| 216 | complain_overflow_dont, |
| 217 | nios2_elf32_hi16_relocate, |
| 218 | "R_NIOS2_HI16", |
| 219 | FALSE, |
| 220 | 0x003fffc0, |
| 221 | 0x003fffc0, |
| 222 | FALSE), |
| 223 | |
| 224 | HOWTO (R_NIOS2_LO16, |
| 225 | 0, |
| 226 | 2, |
| 227 | 32, |
| 228 | FALSE, |
| 229 | 6, |
| 230 | complain_overflow_dont, |
| 231 | nios2_elf32_lo16_relocate, |
| 232 | "R_NIOS2_LO16", |
| 233 | FALSE, |
| 234 | 0x003fffc0, |
| 235 | 0x003fffc0, |
| 236 | FALSE), |
| 237 | |
| 238 | HOWTO (R_NIOS2_HIADJ16, |
| 239 | 0, |
| 240 | 2, |
| 241 | 32, |
| 242 | FALSE, |
| 243 | 6, |
| 244 | complain_overflow_dont, |
| 245 | nios2_elf32_hiadj16_relocate, |
| 246 | "R_NIOS2_HIADJ16", |
| 247 | FALSE, |
| 248 | 0x003fffc0, |
| 249 | 0x003fffc0, |
| 250 | FALSE), |
| 251 | |
| 252 | HOWTO (R_NIOS2_BFD_RELOC_32, |
| 253 | 0, |
| 254 | 2, /* long */ |
| 255 | 32, |
| 256 | FALSE, |
| 257 | 0, |
| 258 | complain_overflow_dont, |
| 259 | bfd_elf_generic_reloc, |
| 260 | "R_NIOS2_BFD_RELOC32", |
| 261 | FALSE, |
| 262 | 0xffffffff, |
| 263 | 0xffffffff, |
| 264 | FALSE), |
| 265 | |
| 266 | HOWTO (R_NIOS2_BFD_RELOC_16, |
| 267 | 0, |
| 268 | 1, /* short */ |
| 269 | 16, |
| 270 | FALSE, |
| 271 | 0, |
| 272 | complain_overflow_bitfield, |
| 273 | bfd_elf_generic_reloc, |
| 274 | "R_NIOS2_BFD_RELOC16", |
| 275 | FALSE, |
| 276 | 0x0000ffff, |
| 277 | 0x0000ffff, |
| 278 | FALSE), |
| 279 | |
| 280 | HOWTO (R_NIOS2_BFD_RELOC_8, |
| 281 | 0, |
| 282 | 0, /* byte */ |
| 283 | 8, |
| 284 | FALSE, |
| 285 | 0, |
| 286 | complain_overflow_bitfield, |
| 287 | bfd_elf_generic_reloc, |
| 288 | "R_NIOS2_BFD_RELOC8", |
| 289 | FALSE, |
| 290 | 0x000000ff, |
| 291 | 0x000000ff, |
| 292 | FALSE), |
| 293 | |
| 294 | HOWTO (R_NIOS2_GPREL, |
| 295 | 0, |
| 296 | 2, |
| 297 | 32, |
| 298 | FALSE, |
| 299 | 6, |
| 300 | complain_overflow_dont, |
| 301 | nios2_elf32_gprel_relocate, |
| 302 | "R_NIOS2_GPREL", |
| 303 | FALSE, |
| 304 | 0x003fffc0, |
| 305 | 0x003fffc0, |
| 306 | FALSE), |
| 307 | |
| 308 | HOWTO (R_NIOS2_GNU_VTINHERIT, |
| 309 | 0, |
| 310 | 2, /* short */ |
| 311 | 0, |
| 312 | FALSE, |
| 313 | 0, |
| 314 | complain_overflow_dont, |
| 315 | NULL, |
| 316 | "R_NIOS2_GNU_VTINHERIT", |
| 317 | FALSE, |
| 318 | 0, |
| 319 | 0, |
| 320 | FALSE), |
| 321 | |
| 322 | HOWTO (R_NIOS2_GNU_VTENTRY, |
| 323 | 0, |
| 324 | 2, /* byte */ |
| 325 | 0, |
| 326 | FALSE, |
| 327 | 0, |
| 328 | complain_overflow_dont, |
| 329 | _bfd_elf_rel_vtable_reloc_fn, |
| 330 | "R_NIOS2_GNU_VTENTRY", |
| 331 | FALSE, |
| 332 | 0, |
| 333 | 0, |
| 334 | FALSE), |
| 335 | |
| 336 | HOWTO (R_NIOS2_UJMP, |
| 337 | 0, |
| 338 | 2, |
| 339 | 32, |
| 340 | FALSE, |
| 341 | 6, |
| 342 | complain_overflow_dont, |
| 343 | nios2_elf32_ujmp_relocate, |
| 344 | "R_NIOS2_UJMP", |
| 345 | FALSE, |
| 346 | 0x003fffc0, |
| 347 | 0x003fffc0, |
| 348 | FALSE), |
| 349 | |
| 350 | HOWTO (R_NIOS2_CJMP, |
| 351 | 0, |
| 352 | 2, |
| 353 | 32, |
| 354 | FALSE, |
| 355 | 6, |
| 356 | complain_overflow_dont, |
| 357 | nios2_elf32_cjmp_relocate, |
| 358 | "R_NIOS2_CJMP", |
| 359 | FALSE, |
| 360 | 0x003fffc0, |
| 361 | 0x003fffc0, |
| 362 | FALSE), |
| 363 | |
| 364 | HOWTO (R_NIOS2_CALLR, |
| 365 | 0, |
| 366 | 2, |
| 367 | 32, |
| 368 | FALSE, |
| 369 | 6, |
| 370 | complain_overflow_dont, |
| 371 | nios2_elf32_callr_relocate, |
| 372 | "R_NIOS2_CALLR", |
| 373 | FALSE, |
| 374 | 0x003fffc0, |
| 375 | 0x003fffc0, |
| 376 | FALSE), |
| 377 | |
| 378 | HOWTO (R_NIOS2_ALIGN, |
| 379 | 0, |
| 380 | 2, |
| 381 | 0, |
| 382 | FALSE, |
| 383 | 0, |
| 384 | complain_overflow_dont, |
| 385 | nios2_elf32_ignore_reloc, |
| 386 | "R_NIOS2_ALIGN", |
| 387 | FALSE, |
| 388 | 0, |
| 389 | 0, |
| 390 | TRUE), |
| 391 | |
| 392 | |
| 393 | HOWTO (R_NIOS2_GOT16, |
| 394 | 0, |
| 395 | 2, |
| 396 | 16, |
| 397 | FALSE, |
| 398 | 6, |
| 399 | complain_overflow_bitfield, |
| 400 | bfd_elf_generic_reloc, |
| 401 | "R_NIOS2_GOT16", |
| 402 | FALSE, |
| 403 | 0x003fffc0, |
| 404 | 0x003fffc0, |
| 405 | FALSE), |
| 406 | |
| 407 | HOWTO (R_NIOS2_CALL16, |
| 408 | 0, |
| 409 | 2, |
| 410 | 16, |
| 411 | FALSE, |
| 412 | 6, |
| 413 | complain_overflow_bitfield, |
| 414 | bfd_elf_generic_reloc, |
| 415 | "R_NIOS2_CALL16", |
| 416 | FALSE, |
| 417 | 0x003fffc0, |
| 418 | 0x003fffc0, |
| 419 | FALSE), |
| 420 | |
| 421 | HOWTO (R_NIOS2_GOTOFF_LO, |
| 422 | 0, |
| 423 | 2, |
| 424 | 16, |
| 425 | FALSE, |
| 426 | 6, |
| 427 | complain_overflow_dont, |
| 428 | bfd_elf_generic_reloc, |
| 429 | "R_NIOS2_GOTOFF_LO", |
| 430 | FALSE, |
| 431 | 0x003fffc0, |
| 432 | 0x003fffc0, |
| 433 | FALSE), |
| 434 | |
| 435 | HOWTO (R_NIOS2_GOTOFF_HA, |
| 436 | 0, |
| 437 | 2, |
| 438 | 16, |
| 439 | FALSE, |
| 440 | 6, |
| 441 | complain_overflow_dont, |
| 442 | bfd_elf_generic_reloc, |
| 443 | "R_NIOS2_GOTOFF_HA", |
| 444 | FALSE, |
| 445 | 0x003fffc0, |
| 446 | 0x003fffc0, |
| 447 | FALSE), |
| 448 | |
| 449 | HOWTO (R_NIOS2_PCREL_LO, |
| 450 | 0, |
| 451 | 2, |
| 452 | 16, |
| 453 | TRUE, |
| 454 | 6, |
| 455 | complain_overflow_dont, |
| 456 | nios2_elf32_pcrel_lo16_relocate, |
| 457 | "R_NIOS2_PCREL_LO", |
| 458 | FALSE, |
| 459 | 0x003fffc0, |
| 460 | 0x003fffc0, |
| 461 | TRUE), |
| 462 | |
| 463 | HOWTO (R_NIOS2_PCREL_HA, |
| 464 | 0, |
| 465 | 2, |
| 466 | 16, |
| 467 | FALSE, /* This is a PC-relative relocation, but we need to subtract |
| 468 | PC ourselves before the HIADJ. */ |
| 469 | 6, |
| 470 | complain_overflow_dont, |
| 471 | nios2_elf32_pcrel_hiadj16_relocate, |
| 472 | "R_NIOS2_PCREL_HA", |
| 473 | FALSE, |
| 474 | 0x003fffc0, |
| 475 | 0x003fffc0, |
| 476 | TRUE), |
| 477 | |
| 478 | HOWTO (R_NIOS2_TLS_GD16, |
| 479 | 0, |
| 480 | 2, |
| 481 | 16, |
| 482 | FALSE, |
| 483 | 6, |
| 484 | complain_overflow_bitfield, |
| 485 | bfd_elf_generic_reloc, |
| 486 | "R_NIOS2_TLS_GD16", |
| 487 | FALSE, |
| 488 | 0x003fffc0, |
| 489 | 0x003fffc0, |
| 490 | FALSE), |
| 491 | |
| 492 | HOWTO (R_NIOS2_TLS_LDM16, |
| 493 | 0, |
| 494 | 2, |
| 495 | 16, |
| 496 | FALSE, |
| 497 | 6, |
| 498 | complain_overflow_bitfield, |
| 499 | bfd_elf_generic_reloc, |
| 500 | "R_NIOS2_TLS_LDM16", |
| 501 | FALSE, |
| 502 | 0x003fffc0, |
| 503 | 0x003fffc0, |
| 504 | FALSE), |
| 505 | |
| 506 | HOWTO (R_NIOS2_TLS_LDO16, |
| 507 | 0, |
| 508 | 2, |
| 509 | 16, |
| 510 | FALSE, |
| 511 | 6, |
| 512 | complain_overflow_bitfield, |
| 513 | bfd_elf_generic_reloc, |
| 514 | "R_NIOS2_TLS_LDO16", |
| 515 | FALSE, |
| 516 | 0x003fffc0, |
| 517 | 0x003fffc0, |
| 518 | FALSE), |
| 519 | |
| 520 | HOWTO (R_NIOS2_TLS_IE16, |
| 521 | 0, |
| 522 | 2, |
| 523 | 16, |
| 524 | FALSE, |
| 525 | 6, |
| 526 | complain_overflow_bitfield, |
| 527 | bfd_elf_generic_reloc, |
| 528 | "R_NIOS2_TLS_IE16", |
| 529 | FALSE, |
| 530 | 0x003fffc0, |
| 531 | 0x003fffc0, |
| 532 | FALSE), |
| 533 | |
| 534 | HOWTO (R_NIOS2_TLS_LE16, |
| 535 | 0, |
| 536 | 2, |
| 537 | 16, |
| 538 | FALSE, |
| 539 | 6, |
| 540 | complain_overflow_bitfield, |
| 541 | bfd_elf_generic_reloc, |
| 542 | "R_NIOS2_TLS_LE16", |
| 543 | FALSE, |
| 544 | 0x003fffc0, |
| 545 | 0x003fffc0, |
| 546 | FALSE), |
| 547 | |
| 548 | HOWTO (R_NIOS2_TLS_DTPMOD, |
| 549 | 0, |
| 550 | 2, |
| 551 | 32, |
| 552 | FALSE, |
| 553 | 0, |
| 554 | complain_overflow_dont, |
| 555 | bfd_elf_generic_reloc, |
| 556 | "R_NIOS2_TLS_DTPMOD", |
| 557 | FALSE, |
| 558 | 0xffffffff, |
| 559 | 0xffffffff, |
| 560 | FALSE), |
| 561 | |
| 562 | HOWTO (R_NIOS2_TLS_DTPREL, |
| 563 | 0, |
| 564 | 2, |
| 565 | 32, |
| 566 | FALSE, |
| 567 | 0, |
| 568 | complain_overflow_dont, |
| 569 | bfd_elf_generic_reloc, |
| 570 | "R_NIOS2_TLS_DTPREL", |
| 571 | FALSE, |
| 572 | 0xffffffff, |
| 573 | 0xffffffff, |
| 574 | FALSE), |
| 575 | |
| 576 | HOWTO (R_NIOS2_TLS_TPREL, |
| 577 | 0, |
| 578 | 2, |
| 579 | 32, |
| 580 | FALSE, |
| 581 | 0, |
| 582 | complain_overflow_dont, |
| 583 | bfd_elf_generic_reloc, |
| 584 | "R_NIOS2_TLS_TPREL", |
| 585 | FALSE, |
| 586 | 0xffffffff, |
| 587 | 0xffffffff, |
| 588 | FALSE), |
| 589 | |
| 590 | HOWTO (R_NIOS2_COPY, |
| 591 | 0, |
| 592 | 2, |
| 593 | 32, |
| 594 | FALSE, |
| 595 | 0, |
| 596 | complain_overflow_dont, |
| 597 | bfd_elf_generic_reloc, |
| 598 | "R_NIOS2_COPY", |
| 599 | FALSE, |
| 600 | 0, |
| 601 | 0, |
| 602 | FALSE), |
| 603 | |
| 604 | HOWTO (R_NIOS2_GLOB_DAT, |
| 605 | 0, |
| 606 | 2, |
| 607 | 32, |
| 608 | FALSE, |
| 609 | 0, |
| 610 | complain_overflow_dont, |
| 611 | bfd_elf_generic_reloc, |
| 612 | "R_NIOS2_GLOB_DAT", |
| 613 | FALSE, |
| 614 | 0xffffffff, |
| 615 | 0xffffffff, |
| 616 | FALSE), |
| 617 | |
| 618 | HOWTO (R_NIOS2_JUMP_SLOT, |
| 619 | 0, |
| 620 | 2, |
| 621 | 32, |
| 622 | FALSE, |
| 623 | 0, |
| 624 | complain_overflow_dont, |
| 625 | bfd_elf_generic_reloc, |
| 626 | "R_NIOS2_JUMP_SLOT", |
| 627 | FALSE, |
| 628 | 0xffffffff, |
| 629 | 0xffffffff, |
| 630 | FALSE), |
| 631 | |
| 632 | HOWTO (R_NIOS2_RELATIVE, |
| 633 | 0, |
| 634 | 2, |
| 635 | 32, |
| 636 | FALSE, |
| 637 | 0, |
| 638 | complain_overflow_dont, |
| 639 | bfd_elf_generic_reloc, |
| 640 | "R_NIOS2_RELATIVE", |
| 641 | FALSE, |
| 642 | 0xffffffff, |
| 643 | 0xffffffff, |
| 644 | FALSE), |
| 645 | |
| 646 | HOWTO (R_NIOS2_GOTOFF, |
| 647 | 0, |
| 648 | 2, |
| 649 | 32, |
| 650 | FALSE, |
| 651 | 0, |
| 652 | complain_overflow_dont, |
| 653 | bfd_elf_generic_reloc, |
| 654 | "R_NIOS2_GOTOFF", |
| 655 | FALSE, |
| 656 | 0xffffffff, |
| 657 | 0xffffffff, |
| 658 | FALSE), |
| 659 | |
| 660 | HOWTO (R_NIOS2_CALL26_NOAT, /* type */ |
| 661 | 2, /* rightshift */ |
| 662 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 663 | 26, /* bitsize */ |
| 664 | FALSE, /* pc_relative */ |
| 665 | 6, /* bitpos */ |
| 666 | complain_overflow_dont, /* complain on overflow */ |
| 667 | nios2_elf32_call26_relocate, /* special function */ |
| 668 | "R_NIOS2_CALL26_NOAT", /* name */ |
| 669 | FALSE, /* partial_inplace */ |
| 670 | 0xffffffc0, /* src_mask */ |
| 671 | 0xffffffc0, /* dst_mask */ |
| 672 | FALSE), /* pcrel_offset */ |
| 673 | |
| 674 | HOWTO (R_NIOS2_GOT_LO, |
| 675 | 0, |
| 676 | 2, |
| 677 | 16, |
| 678 | FALSE, |
| 679 | 6, |
| 680 | complain_overflow_dont, |
| 681 | bfd_elf_generic_reloc, |
| 682 | "R_NIOS2_GOT_LO", |
| 683 | FALSE, |
| 684 | 0x003fffc0, |
| 685 | 0x003fffc0, |
| 686 | FALSE), |
| 687 | |
| 688 | HOWTO (R_NIOS2_GOT_HA, |
| 689 | 0, |
| 690 | 2, |
| 691 | 16, |
| 692 | FALSE, |
| 693 | 6, |
| 694 | complain_overflow_dont, |
| 695 | bfd_elf_generic_reloc, |
| 696 | "R_NIOS2_GOT_HA", |
| 697 | FALSE, |
| 698 | 0x003fffc0, |
| 699 | 0x003fffc0, |
| 700 | FALSE), |
| 701 | |
| 702 | HOWTO (R_NIOS2_CALL_LO, |
| 703 | 0, |
| 704 | 2, |
| 705 | 16, |
| 706 | FALSE, |
| 707 | 6, |
| 708 | complain_overflow_dont, |
| 709 | bfd_elf_generic_reloc, |
| 710 | "R_NIOS2_CALL_LO", |
| 711 | FALSE, |
| 712 | 0x003fffc0, |
| 713 | 0x003fffc0, |
| 714 | FALSE), |
| 715 | |
| 716 | HOWTO (R_NIOS2_CALL_HA, |
| 717 | 0, |
| 718 | 2, |
| 719 | 16, |
| 720 | FALSE, |
| 721 | 6, |
| 722 | complain_overflow_dont, |
| 723 | bfd_elf_generic_reloc, |
| 724 | "R_NIOS2_CALL_HA", |
| 725 | FALSE, |
| 726 | 0x003fffc0, |
| 727 | 0x003fffc0, |
| 728 | FALSE), |
| 729 | |
| 730 | /* Add other relocations here. */ |
| 731 | }; |
| 732 | |
| 733 | static reloc_howto_type elf_nios2_r2_howto_table_rel[] = { |
| 734 | /* No relocation. */ |
| 735 | HOWTO (R_NIOS2_NONE, /* type */ |
| 736 | 0, /* rightshift */ |
| 737 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 738 | 0, /* bitsize */ |
| 739 | FALSE, /* pc_relative */ |
| 740 | 0, /* bitpos */ |
| 741 | complain_overflow_dont, /* complain_on_overflow */ |
| 742 | bfd_elf_generic_reloc, /* special_function */ |
| 743 | "R_NIOS2_NONE", /* name */ |
| 744 | FALSE, /* partial_inplace */ |
| 745 | 0, /* src_mask */ |
| 746 | 0, /* dst_mask */ |
| 747 | FALSE), /* pcrel_offset */ |
| 748 | |
| 749 | /* 16-bit signed immediate relocation. */ |
| 750 | HOWTO (R_NIOS2_S16, /* type */ |
| 751 | 0, /* rightshift */ |
| 752 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 753 | 16, /* bitsize */ |
| 754 | FALSE, /* pc_relative */ |
| 755 | 16, /* bitpos */ |
| 756 | complain_overflow_signed, /* complain on overflow */ |
| 757 | bfd_elf_generic_reloc, /* special function */ |
| 758 | "R_NIOS2_S16", /* name */ |
| 759 | FALSE, /* partial_inplace */ |
| 760 | 0xffff0000, /* src_mask */ |
| 761 | 0xffff0000, /* dest_mask */ |
| 762 | FALSE), /* pcrel_offset */ |
| 763 | |
| 764 | /* 16-bit unsigned immediate relocation. */ |
| 765 | HOWTO (R_NIOS2_U16, /* type */ |
| 766 | 0, /* rightshift */ |
| 767 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 768 | 16, /* bitsize */ |
| 769 | FALSE, /* pc_relative */ |
| 770 | 16, /* bitpos */ |
| 771 | complain_overflow_unsigned, /* complain on overflow */ |
| 772 | bfd_elf_generic_reloc, /* special function */ |
| 773 | "R_NIOS2_U16", /* name */ |
| 774 | FALSE, /* partial_inplace */ |
| 775 | 0xffff0000, /* src_mask */ |
| 776 | 0xffff0000, /* dest_mask */ |
| 777 | FALSE), /* pcrel_offset */ |
| 778 | |
| 779 | HOWTO (R_NIOS2_PCREL16, /* type */ |
| 780 | 0, /* rightshift */ |
| 781 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 782 | 16, /* bitsize */ |
| 783 | TRUE, /* pc_relative */ |
| 784 | 16, /* bitpos */ |
| 785 | complain_overflow_signed, /* complain on overflow */ |
| 786 | nios2_elf32_pcrel16_relocate, /* special function */ |
| 787 | "R_NIOS2_PCREL16", /* name */ |
| 788 | FALSE, /* partial_inplace */ |
| 789 | 0xffff0000, /* src_mask */ |
| 790 | 0xffff0000, /* dest_mask */ |
| 791 | TRUE), /* pcrel_offset */ |
| 792 | |
| 793 | HOWTO (R_NIOS2_CALL26, /* type */ |
| 794 | 2, /* rightshift */ |
| 795 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 796 | 26, /* bitsize */ |
| 797 | FALSE, /* pc_relative */ |
| 798 | 6, /* bitpos */ |
| 799 | complain_overflow_dont, /* complain on overflow */ |
| 800 | nios2_elf32_call26_relocate, /* special function */ |
| 801 | "R_NIOS2_CALL26", /* name */ |
| 802 | FALSE, /* partial_inplace */ |
| 803 | 0xffffffc0, /* src_mask */ |
| 804 | 0xffffffc0, /* dst_mask */ |
| 805 | FALSE), /* pcrel_offset */ |
| 806 | |
| 807 | HOWTO (R_NIOS2_IMM5, |
| 808 | 0, |
| 809 | 2, |
| 810 | 5, |
| 811 | FALSE, |
| 812 | 21, |
| 813 | complain_overflow_bitfield, |
| 814 | bfd_elf_generic_reloc, |
| 815 | "R_NIOS2_IMM5", |
| 816 | FALSE, |
| 817 | 0x03e00000, |
| 818 | 0x03e00000, |
| 819 | FALSE), |
| 820 | |
| 821 | HOWTO (R_NIOS2_CACHE_OPX, |
| 822 | 0, |
| 823 | 2, |
| 824 | 5, |
| 825 | FALSE, |
| 826 | 11, |
| 827 | complain_overflow_bitfield, |
| 828 | bfd_elf_generic_reloc, |
| 829 | "R_NIOS2_CACHE_OPX", |
| 830 | FALSE, |
| 831 | 0x0000f800, |
| 832 | 0x0000f800, |
| 833 | FALSE), |
| 834 | |
| 835 | HOWTO (R_NIOS2_IMM6, |
| 836 | 0, |
| 837 | 2, |
| 838 | 6, |
| 839 | FALSE, |
| 840 | 26, |
| 841 | complain_overflow_bitfield, |
| 842 | bfd_elf_generic_reloc, |
| 843 | "R_NIOS2_IMM6", |
| 844 | FALSE, |
| 845 | 0xfc000000, |
| 846 | 0xfc000000, |
| 847 | FALSE), |
| 848 | |
| 849 | HOWTO (R_NIOS2_IMM8, |
| 850 | 0, |
| 851 | 2, |
| 852 | 8, |
| 853 | FALSE, |
| 854 | 24, |
| 855 | complain_overflow_bitfield, |
| 856 | bfd_elf_generic_reloc, |
| 857 | "R_NIOS2_IMM8", |
| 858 | FALSE, |
| 859 | 0xff000000, |
| 860 | 0xff000000, |
| 861 | FALSE), |
| 862 | |
| 863 | HOWTO (R_NIOS2_HI16, |
| 864 | 0, |
| 865 | 2, |
| 866 | 32, |
| 867 | FALSE, |
| 868 | 16, |
| 869 | complain_overflow_dont, |
| 870 | nios2_elf32_hi16_relocate, |
| 871 | "R_NIOS2_HI16", |
| 872 | FALSE, |
| 873 | 0xffff0000, |
| 874 | 0xffff0000, |
| 875 | FALSE), |
| 876 | |
| 877 | HOWTO (R_NIOS2_LO16, |
| 878 | 0, |
| 879 | 2, |
| 880 | 32, |
| 881 | FALSE, |
| 882 | 16, |
| 883 | complain_overflow_dont, |
| 884 | nios2_elf32_lo16_relocate, |
| 885 | "R_NIOS2_LO16", |
| 886 | FALSE, |
| 887 | 0xffff0000, |
| 888 | 0xffff0000, |
| 889 | FALSE), |
| 890 | |
| 891 | HOWTO (R_NIOS2_HIADJ16, |
| 892 | 0, |
| 893 | 2, |
| 894 | 32, |
| 895 | FALSE, |
| 896 | 16, |
| 897 | complain_overflow_dont, |
| 898 | nios2_elf32_hiadj16_relocate, |
| 899 | "R_NIOS2_HIADJ16", |
| 900 | FALSE, |
| 901 | 0xffff0000, |
| 902 | 0xffff0000, |
| 903 | FALSE), |
| 904 | |
| 905 | HOWTO (R_NIOS2_BFD_RELOC_32, |
| 906 | 0, |
| 907 | 2, /* long */ |
| 908 | 32, |
| 909 | FALSE, |
| 910 | 0, |
| 911 | complain_overflow_dont, |
| 912 | bfd_elf_generic_reloc, |
| 913 | "R_NIOS2_BFD_RELOC32", |
| 914 | FALSE, |
| 915 | 0xffffffff, |
| 916 | 0xffffffff, |
| 917 | FALSE), |
| 918 | |
| 919 | HOWTO (R_NIOS2_BFD_RELOC_16, |
| 920 | 0, |
| 921 | 1, /* short */ |
| 922 | 16, |
| 923 | FALSE, |
| 924 | 0, |
| 925 | complain_overflow_bitfield, |
| 926 | bfd_elf_generic_reloc, |
| 927 | "R_NIOS2_BFD_RELOC16", |
| 928 | FALSE, |
| 929 | 0x0000ffff, |
| 930 | 0x0000ffff, |
| 931 | FALSE), |
| 932 | |
| 933 | HOWTO (R_NIOS2_BFD_RELOC_8, |
| 934 | 0, |
| 935 | 0, /* byte */ |
| 936 | 8, |
| 937 | FALSE, |
| 938 | 0, |
| 939 | complain_overflow_bitfield, |
| 940 | bfd_elf_generic_reloc, |
| 941 | "R_NIOS2_BFD_RELOC8", |
| 942 | FALSE, |
| 943 | 0x000000ff, |
| 944 | 0x000000ff, |
| 945 | FALSE), |
| 946 | |
| 947 | HOWTO (R_NIOS2_GPREL, |
| 948 | 0, |
| 949 | 2, |
| 950 | 32, |
| 951 | FALSE, |
| 952 | 16, |
| 953 | complain_overflow_dont, |
| 954 | nios2_elf32_gprel_relocate, |
| 955 | "R_NIOS2_GPREL", |
| 956 | FALSE, |
| 957 | 0xffff0000, |
| 958 | 0xffff0000, |
| 959 | FALSE), |
| 960 | |
| 961 | HOWTO (R_NIOS2_GNU_VTINHERIT, |
| 962 | 0, |
| 963 | 2, /* short */ |
| 964 | 0, |
| 965 | FALSE, |
| 966 | 0, |
| 967 | complain_overflow_dont, |
| 968 | NULL, |
| 969 | "R_NIOS2_GNU_VTINHERIT", |
| 970 | FALSE, |
| 971 | 0, |
| 972 | 0, |
| 973 | FALSE), |
| 974 | |
| 975 | HOWTO (R_NIOS2_GNU_VTENTRY, |
| 976 | 0, |
| 977 | 2, /* byte */ |
| 978 | 0, |
| 979 | FALSE, |
| 980 | 0, |
| 981 | complain_overflow_dont, |
| 982 | _bfd_elf_rel_vtable_reloc_fn, |
| 983 | "R_NIOS2_GNU_VTENTRY", |
| 984 | FALSE, |
| 985 | 0, |
| 986 | 0, |
| 987 | FALSE), |
| 988 | |
| 989 | HOWTO (R_NIOS2_UJMP, |
| 990 | 0, |
| 991 | 2, |
| 992 | 32, |
| 993 | FALSE, |
| 994 | 16, |
| 995 | complain_overflow_dont, |
| 996 | nios2_elf32_ujmp_relocate, |
| 997 | "R_NIOS2_UJMP", |
| 998 | FALSE, |
| 999 | 0xffff0000, |
| 1000 | 0xffff0000, |
| 1001 | FALSE), |
| 1002 | |
| 1003 | HOWTO (R_NIOS2_CJMP, |
| 1004 | 0, |
| 1005 | 2, |
| 1006 | 32, |
| 1007 | FALSE, |
| 1008 | 16, |
| 1009 | complain_overflow_dont, |
| 1010 | nios2_elf32_cjmp_relocate, |
| 1011 | "R_NIOS2_CJMP", |
| 1012 | FALSE, |
| 1013 | 0xffff0000, |
| 1014 | 0xffff0000, |
| 1015 | FALSE), |
| 1016 | |
| 1017 | HOWTO (R_NIOS2_CALLR, |
| 1018 | 0, |
| 1019 | 2, |
| 1020 | 32, |
| 1021 | FALSE, |
| 1022 | 16, |
| 1023 | complain_overflow_dont, |
| 1024 | nios2_elf32_callr_relocate, |
| 1025 | "R_NIOS2_CALLR", |
| 1026 | FALSE, |
| 1027 | 0xffff0000, |
| 1028 | 0xffff0000, |
| 1029 | FALSE), |
| 1030 | |
| 1031 | HOWTO (R_NIOS2_ALIGN, |
| 1032 | 0, |
| 1033 | 2, |
| 1034 | 0, |
| 1035 | FALSE, |
| 1036 | 0, |
| 1037 | complain_overflow_dont, |
| 1038 | nios2_elf32_ignore_reloc, |
| 1039 | "R_NIOS2_ALIGN", |
| 1040 | FALSE, |
| 1041 | 0, |
| 1042 | 0, |
| 1043 | TRUE), |
| 1044 | |
| 1045 | HOWTO (R_NIOS2_GOT16, |
| 1046 | 0, |
| 1047 | 2, |
| 1048 | 16, |
| 1049 | FALSE, |
| 1050 | 16, |
| 1051 | complain_overflow_bitfield, |
| 1052 | bfd_elf_generic_reloc, |
| 1053 | "R_NIOS2_GOT16", |
| 1054 | FALSE, |
| 1055 | 0xffff0000, |
| 1056 | 0xffff0000, |
| 1057 | FALSE), |
| 1058 | |
| 1059 | HOWTO (R_NIOS2_CALL16, |
| 1060 | 0, |
| 1061 | 2, |
| 1062 | 16, |
| 1063 | FALSE, |
| 1064 | 16, |
| 1065 | complain_overflow_bitfield, |
| 1066 | bfd_elf_generic_reloc, |
| 1067 | "R_NIOS2_CALL16", |
| 1068 | FALSE, |
| 1069 | 0xffff0000, |
| 1070 | 0xffff0000, |
| 1071 | FALSE), |
| 1072 | |
| 1073 | HOWTO (R_NIOS2_GOTOFF_LO, |
| 1074 | 0, |
| 1075 | 2, |
| 1076 | 16, |
| 1077 | FALSE, |
| 1078 | 16, |
| 1079 | complain_overflow_dont, |
| 1080 | bfd_elf_generic_reloc, |
| 1081 | "R_NIOS2_GOTOFF_LO", |
| 1082 | FALSE, |
| 1083 | 0xffff0000, |
| 1084 | 0xffff0000, |
| 1085 | FALSE), |
| 1086 | |
| 1087 | HOWTO (R_NIOS2_GOTOFF_HA, |
| 1088 | 0, |
| 1089 | 2, |
| 1090 | 16, |
| 1091 | FALSE, |
| 1092 | 16, |
| 1093 | complain_overflow_dont, |
| 1094 | bfd_elf_generic_reloc, |
| 1095 | "R_NIOS2_GOTOFF_HA", |
| 1096 | FALSE, |
| 1097 | 0xffff0000, |
| 1098 | 0xffff0000, |
| 1099 | FALSE), |
| 1100 | |
| 1101 | HOWTO (R_NIOS2_PCREL_LO, |
| 1102 | 0, |
| 1103 | 2, |
| 1104 | 16, |
| 1105 | TRUE, |
| 1106 | 16, |
| 1107 | complain_overflow_dont, |
| 1108 | nios2_elf32_pcrel_lo16_relocate, |
| 1109 | "R_NIOS2_PCREL_LO", |
| 1110 | FALSE, |
| 1111 | 0xffff0000, |
| 1112 | 0xffff0000, |
| 1113 | TRUE), |
| 1114 | |
| 1115 | HOWTO (R_NIOS2_PCREL_HA, |
| 1116 | 0, |
| 1117 | 2, |
| 1118 | 16, |
| 1119 | FALSE, /* This is a PC-relative relocation, but we need to subtract |
| 1120 | PC ourselves before the HIADJ. */ |
| 1121 | 16, |
| 1122 | complain_overflow_dont, |
| 1123 | nios2_elf32_pcrel_hiadj16_relocate, |
| 1124 | "R_NIOS2_PCREL_HA", |
| 1125 | FALSE, |
| 1126 | 0xffff0000, |
| 1127 | 0xffff0000, |
| 1128 | TRUE), |
| 1129 | |
| 1130 | HOWTO (R_NIOS2_TLS_GD16, |
| 1131 | 0, |
| 1132 | 2, |
| 1133 | 16, |
| 1134 | FALSE, |
| 1135 | 16, |
| 1136 | complain_overflow_bitfield, |
| 1137 | bfd_elf_generic_reloc, |
| 1138 | "R_NIOS2_TLS_GD16", |
| 1139 | FALSE, |
| 1140 | 0xffff0000, |
| 1141 | 0xffff0000, |
| 1142 | FALSE), |
| 1143 | |
| 1144 | HOWTO (R_NIOS2_TLS_LDM16, |
| 1145 | 0, |
| 1146 | 2, |
| 1147 | 16, |
| 1148 | FALSE, |
| 1149 | 16, |
| 1150 | complain_overflow_bitfield, |
| 1151 | bfd_elf_generic_reloc, |
| 1152 | "R_NIOS2_TLS_LDM16", |
| 1153 | FALSE, |
| 1154 | 0xffff0000, |
| 1155 | 0xffff0000, |
| 1156 | FALSE), |
| 1157 | |
| 1158 | HOWTO (R_NIOS2_TLS_LDO16, |
| 1159 | 0, |
| 1160 | 2, |
| 1161 | 16, |
| 1162 | FALSE, |
| 1163 | 16, |
| 1164 | complain_overflow_bitfield, |
| 1165 | bfd_elf_generic_reloc, |
| 1166 | "R_NIOS2_TLS_LDO16", |
| 1167 | FALSE, |
| 1168 | 0xffff0000, |
| 1169 | 0xffff0000, |
| 1170 | FALSE), |
| 1171 | |
| 1172 | HOWTO (R_NIOS2_TLS_IE16, |
| 1173 | 0, |
| 1174 | 2, |
| 1175 | 16, |
| 1176 | FALSE, |
| 1177 | 16, |
| 1178 | complain_overflow_bitfield, |
| 1179 | bfd_elf_generic_reloc, |
| 1180 | "R_NIOS2_TLS_IE16", |
| 1181 | FALSE, |
| 1182 | 0xffff0000, |
| 1183 | 0xffff0000, |
| 1184 | FALSE), |
| 1185 | |
| 1186 | HOWTO (R_NIOS2_TLS_LE16, |
| 1187 | 0, |
| 1188 | 2, |
| 1189 | 16, |
| 1190 | FALSE, |
| 1191 | 16, |
| 1192 | complain_overflow_bitfield, |
| 1193 | bfd_elf_generic_reloc, |
| 1194 | "R_NIOS2_TLS_LE16", |
| 1195 | FALSE, |
| 1196 | 0xffff0000, |
| 1197 | 0xffff0000, |
| 1198 | FALSE), |
| 1199 | |
| 1200 | HOWTO (R_NIOS2_TLS_DTPMOD, |
| 1201 | 0, |
| 1202 | 2, |
| 1203 | 32, |
| 1204 | FALSE, |
| 1205 | 0, |
| 1206 | complain_overflow_dont, |
| 1207 | bfd_elf_generic_reloc, |
| 1208 | "R_NIOS2_TLS_DTPMOD", |
| 1209 | FALSE, |
| 1210 | 0xffffffff, |
| 1211 | 0xffffffff, |
| 1212 | FALSE), |
| 1213 | |
| 1214 | HOWTO (R_NIOS2_TLS_DTPREL, |
| 1215 | 0, |
| 1216 | 2, |
| 1217 | 32, |
| 1218 | FALSE, |
| 1219 | 0, |
| 1220 | complain_overflow_dont, |
| 1221 | bfd_elf_generic_reloc, |
| 1222 | "R_NIOS2_TLS_DTPREL", |
| 1223 | FALSE, |
| 1224 | 0xffffffff, |
| 1225 | 0xffffffff, |
| 1226 | FALSE), |
| 1227 | |
| 1228 | HOWTO (R_NIOS2_TLS_TPREL, |
| 1229 | 0, |
| 1230 | 2, |
| 1231 | 32, |
| 1232 | FALSE, |
| 1233 | 0, |
| 1234 | complain_overflow_dont, |
| 1235 | bfd_elf_generic_reloc, |
| 1236 | "R_NIOS2_TLS_TPREL", |
| 1237 | FALSE, |
| 1238 | 0xffffffff, |
| 1239 | 0xffffffff, |
| 1240 | FALSE), |
| 1241 | |
| 1242 | HOWTO (R_NIOS2_COPY, |
| 1243 | 0, |
| 1244 | 2, |
| 1245 | 32, |
| 1246 | FALSE, |
| 1247 | 0, |
| 1248 | complain_overflow_dont, |
| 1249 | bfd_elf_generic_reloc, |
| 1250 | "R_NIOS2_COPY", |
| 1251 | FALSE, |
| 1252 | 0, |
| 1253 | 0, |
| 1254 | FALSE), |
| 1255 | |
| 1256 | HOWTO (R_NIOS2_GLOB_DAT, |
| 1257 | 0, |
| 1258 | 2, |
| 1259 | 32, |
| 1260 | FALSE, |
| 1261 | 0, |
| 1262 | complain_overflow_dont, |
| 1263 | bfd_elf_generic_reloc, |
| 1264 | "R_NIOS2_GLOB_DAT", |
| 1265 | FALSE, |
| 1266 | 0xffffffff, |
| 1267 | 0xffffffff, |
| 1268 | FALSE), |
| 1269 | |
| 1270 | HOWTO (R_NIOS2_JUMP_SLOT, |
| 1271 | 0, |
| 1272 | 2, |
| 1273 | 32, |
| 1274 | FALSE, |
| 1275 | 0, |
| 1276 | complain_overflow_dont, |
| 1277 | bfd_elf_generic_reloc, |
| 1278 | "R_NIOS2_JUMP_SLOT", |
| 1279 | FALSE, |
| 1280 | 0xffffffff, |
| 1281 | 0xffffffff, |
| 1282 | FALSE), |
| 1283 | |
| 1284 | HOWTO (R_NIOS2_RELATIVE, |
| 1285 | 0, |
| 1286 | 2, |
| 1287 | 32, |
| 1288 | FALSE, |
| 1289 | 0, |
| 1290 | complain_overflow_dont, |
| 1291 | bfd_elf_generic_reloc, |
| 1292 | "R_NIOS2_RELATIVE", |
| 1293 | FALSE, |
| 1294 | 0xffffffff, |
| 1295 | 0xffffffff, |
| 1296 | FALSE), |
| 1297 | |
| 1298 | HOWTO (R_NIOS2_GOTOFF, |
| 1299 | 0, |
| 1300 | 2, |
| 1301 | 32, |
| 1302 | FALSE, |
| 1303 | 0, |
| 1304 | complain_overflow_dont, |
| 1305 | bfd_elf_generic_reloc, |
| 1306 | "R_NIOS2_GOTOFF", |
| 1307 | FALSE, |
| 1308 | 0xffffffff, |
| 1309 | 0xffffffff, |
| 1310 | FALSE), |
| 1311 | |
| 1312 | HOWTO (R_NIOS2_CALL26_NOAT, /* type */ |
| 1313 | 2, /* rightshift */ |
| 1314 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1315 | 26, /* bitsize */ |
| 1316 | FALSE, /* pc_relative */ |
| 1317 | 6, /* bitpos */ |
| 1318 | complain_overflow_dont, /* complain on overflow */ |
| 1319 | nios2_elf32_call26_relocate, /* special function */ |
| 1320 | "R_NIOS2_CALL26_NOAT", /* name */ |
| 1321 | FALSE, /* partial_inplace */ |
| 1322 | 0xffffffc0, /* src_mask */ |
| 1323 | 0xffffffc0, /* dst_mask */ |
| 1324 | FALSE), /* pcrel_offset */ |
| 1325 | |
| 1326 | HOWTO (R_NIOS2_GOT_LO, |
| 1327 | 0, |
| 1328 | 2, |
| 1329 | 16, |
| 1330 | FALSE, |
| 1331 | 16, |
| 1332 | complain_overflow_dont, |
| 1333 | bfd_elf_generic_reloc, |
| 1334 | "R_NIOS2_GOT_LO", |
| 1335 | FALSE, |
| 1336 | 0xffff0000, |
| 1337 | 0xffff0000, |
| 1338 | FALSE), |
| 1339 | |
| 1340 | HOWTO (R_NIOS2_GOT_HA, |
| 1341 | 0, |
| 1342 | 2, |
| 1343 | 16, |
| 1344 | FALSE, |
| 1345 | 16, |
| 1346 | complain_overflow_dont, |
| 1347 | bfd_elf_generic_reloc, |
| 1348 | "R_NIOS2_GOT_HA", |
| 1349 | FALSE, |
| 1350 | 0xffff0000, |
| 1351 | 0xffff0000, |
| 1352 | FALSE), |
| 1353 | |
| 1354 | HOWTO (R_NIOS2_CALL_LO, |
| 1355 | 0, |
| 1356 | 2, |
| 1357 | 16, |
| 1358 | FALSE, |
| 1359 | 16, |
| 1360 | complain_overflow_dont, |
| 1361 | bfd_elf_generic_reloc, |
| 1362 | "R_NIOS2_CALL_LO", |
| 1363 | FALSE, |
| 1364 | 0xffff0000, |
| 1365 | 0xffff0000, |
| 1366 | FALSE), |
| 1367 | |
| 1368 | HOWTO (R_NIOS2_CALL_HA, |
| 1369 | 0, |
| 1370 | 2, |
| 1371 | 16, |
| 1372 | FALSE, |
| 1373 | 16, |
| 1374 | complain_overflow_dont, |
| 1375 | bfd_elf_generic_reloc, |
| 1376 | "R_NIOS2_CALL_HA", |
| 1377 | FALSE, |
| 1378 | 0xffff0000, |
| 1379 | 0xffff0000, |
| 1380 | FALSE), |
| 1381 | |
| 1382 | HOWTO (R_NIOS2_R2_S12, |
| 1383 | 0, |
| 1384 | 2, |
| 1385 | 12, |
| 1386 | FALSE, |
| 1387 | 16, |
| 1388 | complain_overflow_signed, |
| 1389 | bfd_elf_generic_reloc, |
| 1390 | "R_NIOS2_R2_S12", |
| 1391 | FALSE, |
| 1392 | 0x0fff0000, |
| 1393 | 0x0fff0000, |
| 1394 | FALSE), |
| 1395 | |
| 1396 | HOWTO (R_NIOS2_R2_I10_1_PCREL, |
| 1397 | 1, |
| 1398 | 1, |
| 1399 | 10, |
| 1400 | TRUE, |
| 1401 | 6, |
| 1402 | complain_overflow_signed, |
| 1403 | bfd_elf_generic_reloc, /* FIXME? */ |
| 1404 | "R_NIOS2_R2_I10_1_PCREL", |
| 1405 | FALSE, |
| 1406 | 0xffc0, |
| 1407 | 0xffc0, |
| 1408 | TRUE), |
| 1409 | |
| 1410 | HOWTO (R_NIOS2_R2_T1I7_1_PCREL, |
| 1411 | 1, |
| 1412 | 1, |
| 1413 | 7, |
| 1414 | TRUE, |
| 1415 | 9, |
| 1416 | complain_overflow_signed, |
| 1417 | bfd_elf_generic_reloc, /* FIXME? */ |
| 1418 | "R_NIOS2_R2_T1I7_1_PCREL", |
| 1419 | FALSE, |
| 1420 | 0xfe00, |
| 1421 | 0xfe00, |
| 1422 | TRUE), |
| 1423 | |
| 1424 | HOWTO (R_NIOS2_R2_T1I7_2, |
| 1425 | 2, |
| 1426 | 1, |
| 1427 | 7, |
| 1428 | FALSE, |
| 1429 | 9, |
| 1430 | complain_overflow_unsigned, |
| 1431 | bfd_elf_generic_reloc, |
| 1432 | "R_NIOS2_R2_T1I7_2", |
| 1433 | FALSE, |
| 1434 | 0xfe00, |
| 1435 | 0xfe00, |
| 1436 | FALSE), |
| 1437 | |
| 1438 | HOWTO (R_NIOS2_R2_T2I4, |
| 1439 | 0, |
| 1440 | 1, |
| 1441 | 4, |
| 1442 | FALSE, |
| 1443 | 12, |
| 1444 | complain_overflow_unsigned, |
| 1445 | bfd_elf_generic_reloc, |
| 1446 | "R_NIOS2_R2_T2I4", |
| 1447 | FALSE, |
| 1448 | 0xf000, |
| 1449 | 0xf000, |
| 1450 | FALSE), |
| 1451 | |
| 1452 | HOWTO (R_NIOS2_R2_T2I4_1, |
| 1453 | 1, |
| 1454 | 1, |
| 1455 | 4, |
| 1456 | FALSE, |
| 1457 | 12, |
| 1458 | complain_overflow_unsigned, |
| 1459 | bfd_elf_generic_reloc, |
| 1460 | "R_NIOS2_R2_T2I4_1", |
| 1461 | FALSE, |
| 1462 | 0xf000, |
| 1463 | 0xf000, |
| 1464 | FALSE), |
| 1465 | |
| 1466 | HOWTO (R_NIOS2_R2_T2I4_2, |
| 1467 | 2, |
| 1468 | 1, |
| 1469 | 4, |
| 1470 | FALSE, |
| 1471 | 12, |
| 1472 | complain_overflow_unsigned, |
| 1473 | bfd_elf_generic_reloc, |
| 1474 | "R_NIOS2_R2_T2I4_2", |
| 1475 | FALSE, |
| 1476 | 0xf000, |
| 1477 | 0xf000, |
| 1478 | FALSE), |
| 1479 | |
| 1480 | HOWTO (R_NIOS2_R2_X1I7_2, |
| 1481 | 2, |
| 1482 | 1, |
| 1483 | 7, |
| 1484 | FALSE, |
| 1485 | 6, |
| 1486 | complain_overflow_unsigned, |
| 1487 | bfd_elf_generic_reloc, |
| 1488 | "R_NIOS2_R2_X1I7_2", |
| 1489 | FALSE, |
| 1490 | 0x1fc0, |
| 1491 | 0x1fc0, |
| 1492 | FALSE), |
| 1493 | |
| 1494 | HOWTO (R_NIOS2_R2_X2L5, |
| 1495 | 0, |
| 1496 | 1, |
| 1497 | 5, |
| 1498 | FALSE, |
| 1499 | 6, |
| 1500 | complain_overflow_unsigned, |
| 1501 | bfd_elf_generic_reloc, |
| 1502 | "R_NIOS2_R2_X2L5", |
| 1503 | FALSE, |
| 1504 | 0x07c0, |
| 1505 | 0x07c0, |
| 1506 | FALSE), |
| 1507 | |
| 1508 | HOWTO (R_NIOS2_R2_F1I5_2, |
| 1509 | 2, |
| 1510 | 1, |
| 1511 | 5, |
| 1512 | FALSE, |
| 1513 | 6, |
| 1514 | complain_overflow_unsigned, |
| 1515 | bfd_elf_generic_reloc, |
| 1516 | "R_NIOS2_R2_F1L5_2", |
| 1517 | FALSE, |
| 1518 | 0x07c0, |
| 1519 | 0x07c0, |
| 1520 | FALSE), |
| 1521 | |
| 1522 | HOWTO (R_NIOS2_R2_L5I4X1, |
| 1523 | 2, |
| 1524 | 1, |
| 1525 | 4, |
| 1526 | FALSE, |
| 1527 | 6, |
| 1528 | complain_overflow_unsigned, |
| 1529 | bfd_elf_generic_reloc, |
| 1530 | "R_NIOS2_R2_L5I4X1", |
| 1531 | FALSE, |
| 1532 | 0x03c0, |
| 1533 | 0x03c0, |
| 1534 | FALSE), |
| 1535 | |
| 1536 | HOWTO (R_NIOS2_R2_T1X1I6, |
| 1537 | 0, |
| 1538 | 1, |
| 1539 | 6, |
| 1540 | FALSE, |
| 1541 | 9, |
| 1542 | complain_overflow_unsigned, |
| 1543 | bfd_elf_generic_reloc, |
| 1544 | "R_NIOS2_R2_T1X1I6", |
| 1545 | FALSE, |
| 1546 | 0x7e00, |
| 1547 | 0x7e00, |
| 1548 | FALSE), |
| 1549 | |
| 1550 | HOWTO (R_NIOS2_R2_T1X1I6_2, |
| 1551 | 2, |
| 1552 | 2, |
| 1553 | 6, |
| 1554 | FALSE, |
| 1555 | 9, |
| 1556 | complain_overflow_unsigned, |
| 1557 | bfd_elf_generic_reloc, |
| 1558 | "R_NIOS2_R2_T1I1X6_2", |
| 1559 | FALSE, |
| 1560 | 0x7e00, |
| 1561 | 0x7e00, |
| 1562 | FALSE), |
| 1563 | |
| 1564 | /* Add other relocations here. */ |
| 1565 | }; |
| 1566 | |
| 1567 | static unsigned char elf_code_to_howto_index[R_NIOS2_ILLEGAL + 1]; |
| 1568 | |
| 1569 | |
| 1570 | /* Return true if producing output for a R2 BFD. */ |
| 1571 | #define BFD_IS_R2(abfd) (bfd_get_mach (abfd) == bfd_mach_nios2r2) |
| 1572 | |
| 1573 | /* Return the howto for relocation RTYPE. */ |
| 1574 | static reloc_howto_type * |
| 1575 | lookup_howto (unsigned int rtype, bfd *abfd) |
| 1576 | { |
| 1577 | static int initialized = 0; |
| 1578 | int i; |
| 1579 | /* R2 relocations are a superset of R1, so use that for the lookup |
| 1580 | table. */ |
| 1581 | int r1_howto_tbl_size = (int) (sizeof (elf_nios2_r1_howto_table_rel) |
| 1582 | / sizeof (elf_nios2_r1_howto_table_rel[0])); |
| 1583 | int r2_howto_tbl_size = (int) (sizeof (elf_nios2_r2_howto_table_rel) |
| 1584 | / sizeof (elf_nios2_r2_howto_table_rel[0])); |
| 1585 | |
| 1586 | if (!initialized) |
| 1587 | { |
| 1588 | initialized = 1; |
| 1589 | memset (elf_code_to_howto_index, 0xff, |
| 1590 | sizeof (elf_code_to_howto_index)); |
| 1591 | for (i = 0; i < r2_howto_tbl_size; i++) |
| 1592 | { |
| 1593 | elf_code_to_howto_index[elf_nios2_r2_howto_table_rel[i].type] = i; |
| 1594 | if (i < r1_howto_tbl_size) |
| 1595 | BFD_ASSERT (elf_nios2_r2_howto_table_rel[i].type |
| 1596 | == elf_nios2_r1_howto_table_rel[i].type); |
| 1597 | } |
| 1598 | } |
| 1599 | |
| 1600 | BFD_ASSERT (rtype <= R_NIOS2_ILLEGAL); |
| 1601 | i = elf_code_to_howto_index[rtype]; |
| 1602 | if (BFD_IS_R2 (abfd)) |
| 1603 | { |
| 1604 | if (i >= r2_howto_tbl_size) |
| 1605 | return 0; |
| 1606 | return elf_nios2_r2_howto_table_rel + i; |
| 1607 | } |
| 1608 | else |
| 1609 | { |
| 1610 | if (i >= r1_howto_tbl_size) |
| 1611 | return 0; |
| 1612 | return elf_nios2_r1_howto_table_rel + i; |
| 1613 | } |
| 1614 | } |
| 1615 | |
| 1616 | /* Map for converting BFD reloc types to Nios II reloc types. */ |
| 1617 | struct elf_reloc_map |
| 1618 | { |
| 1619 | bfd_reloc_code_real_type bfd_val; |
| 1620 | enum elf_nios2_reloc_type elf_val; |
| 1621 | }; |
| 1622 | |
| 1623 | static const struct elf_reloc_map nios2_reloc_map[] = { |
| 1624 | {BFD_RELOC_NONE, R_NIOS2_NONE}, |
| 1625 | {BFD_RELOC_NIOS2_S16, R_NIOS2_S16}, |
| 1626 | {BFD_RELOC_NIOS2_U16, R_NIOS2_U16}, |
| 1627 | {BFD_RELOC_16_PCREL, R_NIOS2_PCREL16}, |
| 1628 | {BFD_RELOC_NIOS2_CALL26, R_NIOS2_CALL26}, |
| 1629 | {BFD_RELOC_NIOS2_IMM5, R_NIOS2_IMM5}, |
| 1630 | {BFD_RELOC_NIOS2_CACHE_OPX, R_NIOS2_CACHE_OPX}, |
| 1631 | {BFD_RELOC_NIOS2_IMM6, R_NIOS2_IMM6}, |
| 1632 | {BFD_RELOC_NIOS2_IMM8, R_NIOS2_IMM8}, |
| 1633 | {BFD_RELOC_NIOS2_HI16, R_NIOS2_HI16}, |
| 1634 | {BFD_RELOC_NIOS2_LO16, R_NIOS2_LO16}, |
| 1635 | {BFD_RELOC_NIOS2_HIADJ16, R_NIOS2_HIADJ16}, |
| 1636 | {BFD_RELOC_32, R_NIOS2_BFD_RELOC_32}, |
| 1637 | {BFD_RELOC_16, R_NIOS2_BFD_RELOC_16}, |
| 1638 | {BFD_RELOC_8, R_NIOS2_BFD_RELOC_8}, |
| 1639 | {BFD_RELOC_NIOS2_GPREL, R_NIOS2_GPREL}, |
| 1640 | {BFD_RELOC_VTABLE_INHERIT, R_NIOS2_GNU_VTINHERIT}, |
| 1641 | {BFD_RELOC_VTABLE_ENTRY, R_NIOS2_GNU_VTENTRY}, |
| 1642 | {BFD_RELOC_NIOS2_UJMP, R_NIOS2_UJMP}, |
| 1643 | {BFD_RELOC_NIOS2_CJMP, R_NIOS2_CJMP}, |
| 1644 | {BFD_RELOC_NIOS2_CALLR, R_NIOS2_CALLR}, |
| 1645 | {BFD_RELOC_NIOS2_ALIGN, R_NIOS2_ALIGN}, |
| 1646 | {BFD_RELOC_NIOS2_GOT16, R_NIOS2_GOT16}, |
| 1647 | {BFD_RELOC_NIOS2_CALL16, R_NIOS2_CALL16}, |
| 1648 | {BFD_RELOC_NIOS2_GOTOFF_LO, R_NIOS2_GOTOFF_LO}, |
| 1649 | {BFD_RELOC_NIOS2_GOTOFF_HA, R_NIOS2_GOTOFF_HA}, |
| 1650 | {BFD_RELOC_NIOS2_PCREL_LO, R_NIOS2_PCREL_LO}, |
| 1651 | {BFD_RELOC_NIOS2_PCREL_HA, R_NIOS2_PCREL_HA}, |
| 1652 | {BFD_RELOC_NIOS2_TLS_GD16, R_NIOS2_TLS_GD16}, |
| 1653 | {BFD_RELOC_NIOS2_TLS_LDM16, R_NIOS2_TLS_LDM16}, |
| 1654 | {BFD_RELOC_NIOS2_TLS_LDO16, R_NIOS2_TLS_LDO16}, |
| 1655 | {BFD_RELOC_NIOS2_TLS_IE16, R_NIOS2_TLS_IE16}, |
| 1656 | {BFD_RELOC_NIOS2_TLS_LE16, R_NIOS2_TLS_LE16}, |
| 1657 | {BFD_RELOC_NIOS2_TLS_DTPMOD, R_NIOS2_TLS_DTPMOD}, |
| 1658 | {BFD_RELOC_NIOS2_TLS_DTPREL, R_NIOS2_TLS_DTPREL}, |
| 1659 | {BFD_RELOC_NIOS2_TLS_TPREL, R_NIOS2_TLS_TPREL}, |
| 1660 | {BFD_RELOC_NIOS2_COPY, R_NIOS2_COPY}, |
| 1661 | {BFD_RELOC_NIOS2_GLOB_DAT, R_NIOS2_GLOB_DAT}, |
| 1662 | {BFD_RELOC_NIOS2_JUMP_SLOT, R_NIOS2_JUMP_SLOT}, |
| 1663 | {BFD_RELOC_NIOS2_RELATIVE, R_NIOS2_RELATIVE}, |
| 1664 | {BFD_RELOC_NIOS2_GOTOFF, R_NIOS2_GOTOFF}, |
| 1665 | {BFD_RELOC_NIOS2_CALL26_NOAT, R_NIOS2_CALL26_NOAT}, |
| 1666 | {BFD_RELOC_NIOS2_GOT_LO, R_NIOS2_GOT_LO}, |
| 1667 | {BFD_RELOC_NIOS2_GOT_HA, R_NIOS2_GOT_HA}, |
| 1668 | {BFD_RELOC_NIOS2_CALL_LO, R_NIOS2_CALL_LO}, |
| 1669 | {BFD_RELOC_NIOS2_CALL_HA, R_NIOS2_CALL_HA}, |
| 1670 | {BFD_RELOC_NIOS2_R2_S12, R_NIOS2_R2_S12}, |
| 1671 | {BFD_RELOC_NIOS2_R2_I10_1_PCREL, R_NIOS2_R2_I10_1_PCREL}, |
| 1672 | {BFD_RELOC_NIOS2_R2_T1I7_1_PCREL, R_NIOS2_R2_T1I7_1_PCREL}, |
| 1673 | {BFD_RELOC_NIOS2_R2_T1I7_2, R_NIOS2_R2_T1I7_2}, |
| 1674 | {BFD_RELOC_NIOS2_R2_T2I4, R_NIOS2_R2_T2I4}, |
| 1675 | {BFD_RELOC_NIOS2_R2_T2I4_1, R_NIOS2_R2_T2I4_1}, |
| 1676 | {BFD_RELOC_NIOS2_R2_T2I4_2, R_NIOS2_R2_T2I4_2}, |
| 1677 | {BFD_RELOC_NIOS2_R2_X1I7_2, R_NIOS2_R2_X1I7_2}, |
| 1678 | {BFD_RELOC_NIOS2_R2_X2L5, R_NIOS2_R2_X2L5}, |
| 1679 | {BFD_RELOC_NIOS2_R2_F1I5_2, R_NIOS2_R2_F1I5_2}, |
| 1680 | {BFD_RELOC_NIOS2_R2_L5I4X1, R_NIOS2_R2_L5I4X1}, |
| 1681 | {BFD_RELOC_NIOS2_R2_T1X1I6, R_NIOS2_R2_T1X1I6}, |
| 1682 | {BFD_RELOC_NIOS2_R2_T1X1I6_2, R_NIOS2_R2_T1X1I6_2}, |
| 1683 | }; |
| 1684 | |
| 1685 | enum elf32_nios2_stub_type |
| 1686 | { |
| 1687 | nios2_stub_call26_before, |
| 1688 | nios2_stub_call26_after, |
| 1689 | nios2_stub_none |
| 1690 | }; |
| 1691 | |
| 1692 | struct elf32_nios2_stub_hash_entry |
| 1693 | { |
| 1694 | /* Base hash table entry structure. */ |
| 1695 | struct bfd_hash_entry bh_root; |
| 1696 | |
| 1697 | /* The stub section. */ |
| 1698 | asection *stub_sec; |
| 1699 | |
| 1700 | /* Offset within stub_sec of the beginning of this stub. */ |
| 1701 | bfd_vma stub_offset; |
| 1702 | |
| 1703 | /* Given the symbol's value and its section we can determine its final |
| 1704 | value when building the stubs (so the stub knows where to jump. */ |
| 1705 | bfd_vma target_value; |
| 1706 | asection *target_section; |
| 1707 | |
| 1708 | enum elf32_nios2_stub_type stub_type; |
| 1709 | |
| 1710 | /* The symbol table entry, if any, that this was derived from. */ |
| 1711 | struct elf32_nios2_link_hash_entry *hh; |
| 1712 | |
| 1713 | /* And the reloc addend that this was derived from. */ |
| 1714 | bfd_vma addend; |
| 1715 | |
| 1716 | /* Where this stub is being called from, or, in the case of combined |
| 1717 | stub sections, the first input section in the group. */ |
| 1718 | asection *id_sec; |
| 1719 | }; |
| 1720 | |
| 1721 | #define nios2_stub_hash_entry(ent) \ |
| 1722 | ((struct elf32_nios2_stub_hash_entry *)(ent)) |
| 1723 | |
| 1724 | #define nios2_stub_hash_lookup(table, string, create, copy) \ |
| 1725 | ((struct elf32_nios2_stub_hash_entry *) \ |
| 1726 | bfd_hash_lookup ((table), (string), (create), (copy))) |
| 1727 | |
| 1728 | |
| 1729 | /* The Nios II linker needs to keep track of the number of relocs that it |
| 1730 | decides to copy as dynamic relocs in check_relocs for each symbol. |
| 1731 | This is so that it can later discard them if they are found to be |
| 1732 | unnecessary. We store the information in a field extending the |
| 1733 | regular ELF linker hash table. */ |
| 1734 | |
| 1735 | struct elf32_nios2_dyn_relocs |
| 1736 | { |
| 1737 | struct elf32_nios2_dyn_relocs *next; |
| 1738 | |
| 1739 | /* The input section of the reloc. */ |
| 1740 | asection *sec; |
| 1741 | |
| 1742 | /* Total number of relocs copied for the input section. */ |
| 1743 | bfd_size_type count; |
| 1744 | |
| 1745 | /* Number of pc-relative relocs copied for the input section. */ |
| 1746 | bfd_size_type pc_count; |
| 1747 | }; |
| 1748 | |
| 1749 | /* Nios II ELF linker hash entry. */ |
| 1750 | |
| 1751 | struct elf32_nios2_link_hash_entry |
| 1752 | { |
| 1753 | struct elf_link_hash_entry root; |
| 1754 | |
| 1755 | /* A pointer to the most recently used stub hash entry against this |
| 1756 | symbol. */ |
| 1757 | struct elf32_nios2_stub_hash_entry *hsh_cache; |
| 1758 | |
| 1759 | /* Track dynamic relocs copied for this symbol. */ |
| 1760 | struct elf32_nios2_dyn_relocs *dyn_relocs; |
| 1761 | |
| 1762 | #define GOT_UNKNOWN 0 |
| 1763 | #define GOT_NORMAL 1 |
| 1764 | #define GOT_TLS_GD 2 |
| 1765 | #define GOT_TLS_IE 4 |
| 1766 | unsigned char tls_type; |
| 1767 | |
| 1768 | /* We need to detect and take special action for symbols which are only |
| 1769 | referenced with %call() and not with %got(). Such symbols do not need |
| 1770 | a dynamic GOT reloc in shared objects, only a dynamic PLT reloc. Lazy |
| 1771 | linking will not work if the dynamic GOT reloc exists. |
| 1772 | To check for this condition efficiently, we compare got_types_used against |
| 1773 | CALL_USED, meaning |
| 1774 | (got_types_used & (GOT_USED | CALL_USED)) == CALL_USED. |
| 1775 | */ |
| 1776 | #define GOT_USED 1 |
| 1777 | #define CALL_USED 2 |
| 1778 | unsigned char got_types_used; |
| 1779 | }; |
| 1780 | |
| 1781 | #define elf32_nios2_hash_entry(ent) \ |
| 1782 | ((struct elf32_nios2_link_hash_entry *) (ent)) |
| 1783 | |
| 1784 | /* Get the Nios II elf linker hash table from a link_info structure. */ |
| 1785 | #define elf32_nios2_hash_table(info) \ |
| 1786 | ((struct elf32_nios2_link_hash_table *) ((info)->hash)) |
| 1787 | |
| 1788 | /* Nios II ELF linker hash table. */ |
| 1789 | struct elf32_nios2_link_hash_table |
| 1790 | { |
| 1791 | /* The main hash table. */ |
| 1792 | struct elf_link_hash_table root; |
| 1793 | |
| 1794 | /* The stub hash table. */ |
| 1795 | struct bfd_hash_table bstab; |
| 1796 | |
| 1797 | /* Linker stub bfd. */ |
| 1798 | bfd *stub_bfd; |
| 1799 | |
| 1800 | /* Linker call-backs. */ |
| 1801 | asection * (*add_stub_section) (const char *, asection *, bfd_boolean); |
| 1802 | void (*layout_sections_again) (void); |
| 1803 | |
| 1804 | /* Array to keep track of which stub sections have been created, and |
| 1805 | information on stub grouping. */ |
| 1806 | struct map_stub |
| 1807 | { |
| 1808 | /* These are the section to which stubs in the group will be |
| 1809 | attached. */ |
| 1810 | asection *first_sec, *last_sec; |
| 1811 | /* The stub sections. There might be stubs inserted either before |
| 1812 | or after the real section.*/ |
| 1813 | asection *first_stub_sec, *last_stub_sec; |
| 1814 | } *stub_group; |
| 1815 | |
| 1816 | /* Assorted information used by nios2_elf32_size_stubs. */ |
| 1817 | unsigned int bfd_count; |
| 1818 | unsigned int top_index; |
| 1819 | asection **input_list; |
| 1820 | Elf_Internal_Sym **all_local_syms; |
| 1821 | |
| 1822 | /* Short-cuts to get to dynamic linker sections. */ |
| 1823 | asection *sbss; |
| 1824 | |
| 1825 | /* GOT pointer symbol _gp_got. */ |
| 1826 | struct elf_link_hash_entry *h_gp_got; |
| 1827 | |
| 1828 | union { |
| 1829 | bfd_signed_vma refcount; |
| 1830 | bfd_vma offset; |
| 1831 | } tls_ldm_got; |
| 1832 | |
| 1833 | /* Small local sym cache. */ |
| 1834 | struct sym_cache sym_cache; |
| 1835 | |
| 1836 | bfd_vma res_n_size; |
| 1837 | }; |
| 1838 | |
| 1839 | struct nios2_elf32_obj_tdata |
| 1840 | { |
| 1841 | struct elf_obj_tdata root; |
| 1842 | |
| 1843 | /* tls_type for each local got entry. */ |
| 1844 | char *local_got_tls_type; |
| 1845 | |
| 1846 | /* TRUE if TLS GD relocs have been seen for this object. */ |
| 1847 | bfd_boolean has_tlsgd; |
| 1848 | }; |
| 1849 | |
| 1850 | #define elf32_nios2_tdata(abfd) \ |
| 1851 | ((struct nios2_elf32_obj_tdata *) (abfd)->tdata.any) |
| 1852 | |
| 1853 | #define elf32_nios2_local_got_tls_type(abfd) \ |
| 1854 | (elf32_nios2_tdata (abfd)->local_got_tls_type) |
| 1855 | |
| 1856 | /* The name of the dynamic interpreter. This is put in the .interp |
| 1857 | section. */ |
| 1858 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" |
| 1859 | |
| 1860 | /* PLT implementation for position-dependent code. */ |
| 1861 | static const bfd_vma nios2_plt_entry[] = { /* .PLTn: */ |
| 1862 | 0x03c00034, /* movhi r15, %hiadj(plt_got_slot_address) */ |
| 1863 | 0x7bc00017, /* ldw r15, %lo(plt_got_slot_address)(r15) */ |
| 1864 | 0x7800683a /* jmp r15 */ |
| 1865 | }; |
| 1866 | |
| 1867 | static const bfd_vma nios2_plt0_entry[] = { /* .PLTresolve */ |
| 1868 | 0x03800034, /* movhi r14, %hiadj(res_0) */ |
| 1869 | 0x73800004, /* addi r14, r14, %lo(res_0) */ |
| 1870 | 0x7b9fc83a, /* sub r15, r15, r14 */ |
| 1871 | 0x03400034, /* movhi r13, %hiadj(_GLOBAL_OFFSET_TABLE_) */ |
| 1872 | 0x6b800017, /* ldw r14, %lo(_GLOBAL_OFFSET_TABLE_+4)(r13) */ |
| 1873 | 0x6b400017, /* ldw r13, %lo(_GLOBAL_OFFSET_TABLE_+8)(r13) */ |
| 1874 | 0x6800683a /* jmp r13 */ |
| 1875 | }; |
| 1876 | |
| 1877 | /* PLT implementation for position-independent code. */ |
| 1878 | static const bfd_vma nios2_so_plt_entry[] = { /* .PLTn */ |
| 1879 | 0x03c00034, /* movhi r15, %hiadj(index * 4) */ |
| 1880 | 0x7bc00004, /* addi r15, r15, %lo(index * 4) */ |
| 1881 | 0x00000006 /* br .PLTresolve */ |
| 1882 | }; |
| 1883 | |
| 1884 | static const bfd_vma nios2_so_plt0_entry[] = { /* .PLTresolve */ |
| 1885 | 0x001ce03a, /* nextpc r14 */ |
| 1886 | 0x03400034, /* movhi r13, %hiadj(_GLOBAL_OFFSET_TABLE_) */ |
| 1887 | 0x6b9b883a, /* add r13, r13, r14 */ |
| 1888 | 0x6b800017, /* ldw r14, %lo(_GLOBAL_OFFSET_TABLE_+4)(r13) */ |
| 1889 | 0x6b400017, /* ldw r13, %lo(_GLOBAL_OFFSET_TABLE_+8)(r13) */ |
| 1890 | 0x6800683a /* jmp r13 */ |
| 1891 | }; |
| 1892 | |
| 1893 | /* CALL26 stub. */ |
| 1894 | static const bfd_vma nios2_call26_stub_entry[] = { |
| 1895 | 0x00400034, /* orhi at, r0, %hiadj(dest) */ |
| 1896 | 0x08400004, /* addi at, at, %lo(dest) */ |
| 1897 | 0x0800683a /* jmp at */ |
| 1898 | }; |
| 1899 | |
| 1900 | /* Install 16-bit immediate value VALUE at offset OFFSET into section SEC. */ |
| 1901 | static void |
| 1902 | nios2_elf32_install_imm16 (asection *sec, bfd_vma offset, bfd_vma value) |
| 1903 | { |
| 1904 | bfd_vma word = bfd_get_32 (sec->owner, sec->contents + offset); |
| 1905 | |
| 1906 | BFD_ASSERT (value <= 0xffff || ((bfd_signed_vma) value) >= -0xffff); |
| 1907 | |
| 1908 | bfd_put_32 (sec->owner, word | ((value & 0xffff) << 6), |
| 1909 | sec->contents + offset); |
| 1910 | } |
| 1911 | |
| 1912 | /* Install COUNT 32-bit values DATA starting at offset OFFSET into |
| 1913 | section SEC. */ |
| 1914 | static void |
| 1915 | nios2_elf32_install_data (asection *sec, const bfd_vma *data, bfd_vma offset, |
| 1916 | int count) |
| 1917 | { |
| 1918 | while (count--) |
| 1919 | { |
| 1920 | bfd_put_32 (sec->owner, *data, sec->contents + offset); |
| 1921 | offset += 4; |
| 1922 | ++data; |
| 1923 | } |
| 1924 | } |
| 1925 | |
| 1926 | /* The usual way of loading a 32-bit constant into a Nios II register is to |
| 1927 | load the high 16 bits in one instruction and then add the low 16 bits with |
| 1928 | a signed add. This means that the high halfword needs to be adjusted to |
| 1929 | compensate for the sign bit of the low halfword. This function returns the |
| 1930 | adjusted high halfword for a given 32-bit constant. */ |
| 1931 | static |
| 1932 | bfd_vma hiadj (bfd_vma symbol_value) |
| 1933 | { |
| 1934 | return ((symbol_value + 0x8000) >> 16) & 0xffff; |
| 1935 | } |
| 1936 | |
| 1937 | /* Implement elf_backend_grok_prstatus: |
| 1938 | Support for core dump NOTE sections. */ |
| 1939 | static bfd_boolean |
| 1940 | nios2_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
| 1941 | { |
| 1942 | int offset; |
| 1943 | size_t size; |
| 1944 | |
| 1945 | switch (note->descsz) |
| 1946 | { |
| 1947 | default: |
| 1948 | return FALSE; |
| 1949 | |
| 1950 | case 212: /* Linux/Nios II */ |
| 1951 | /* pr_cursig */ |
| 1952 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
| 1953 | |
| 1954 | /* pr_pid */ |
| 1955 | elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24); |
| 1956 | |
| 1957 | /* pr_reg */ |
| 1958 | offset = 72; |
| 1959 | size = 136; |
| 1960 | |
| 1961 | break; |
| 1962 | } |
| 1963 | |
| 1964 | /* Make a ".reg/999" section. */ |
| 1965 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
| 1966 | size, note->descpos + offset); |
| 1967 | } |
| 1968 | |
| 1969 | /* Implement elf_backend_grok_psinfo. */ |
| 1970 | static bfd_boolean |
| 1971 | nios2_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
| 1972 | { |
| 1973 | switch (note->descsz) |
| 1974 | { |
| 1975 | default: |
| 1976 | return FALSE; |
| 1977 | |
| 1978 | case 124: /* Linux/Nios II elf_prpsinfo */ |
| 1979 | elf_tdata (abfd)->core->program |
| 1980 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
| 1981 | elf_tdata (abfd)->core->command |
| 1982 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
| 1983 | } |
| 1984 | |
| 1985 | /* Note that for some reason, a spurious space is tacked |
| 1986 | onto the end of the args in some (at least one anyway) |
| 1987 | implementations, so strip it off if it exists. */ |
| 1988 | |
| 1989 | { |
| 1990 | char *command = elf_tdata (abfd)->core->command; |
| 1991 | int n = strlen (command); |
| 1992 | |
| 1993 | if (0 < n && command[n - 1] == ' ') |
| 1994 | command[n - 1] = '\0'; |
| 1995 | } |
| 1996 | |
| 1997 | return TRUE; |
| 1998 | } |
| 1999 | |
| 2000 | /* Assorted hash table functions. */ |
| 2001 | |
| 2002 | /* Initialize an entry in the stub hash table. */ |
| 2003 | static struct bfd_hash_entry * |
| 2004 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
| 2005 | struct bfd_hash_table *table, |
| 2006 | const char *string) |
| 2007 | { |
| 2008 | /* Allocate the structure if it has not already been allocated by a |
| 2009 | subclass. */ |
| 2010 | if (entry == NULL) |
| 2011 | { |
| 2012 | entry = bfd_hash_allocate (table, |
| 2013 | sizeof (struct elf32_nios2_stub_hash_entry)); |
| 2014 | if (entry == NULL) |
| 2015 | return entry; |
| 2016 | } |
| 2017 | |
| 2018 | /* Call the allocation method of the superclass. */ |
| 2019 | entry = bfd_hash_newfunc (entry, table, string); |
| 2020 | if (entry != NULL) |
| 2021 | { |
| 2022 | struct elf32_nios2_stub_hash_entry *hsh; |
| 2023 | |
| 2024 | /* Initialize the local fields. */ |
| 2025 | hsh = (struct elf32_nios2_stub_hash_entry *) entry; |
| 2026 | hsh->stub_sec = NULL; |
| 2027 | hsh->stub_offset = 0; |
| 2028 | hsh->target_value = 0; |
| 2029 | hsh->target_section = NULL; |
| 2030 | hsh->stub_type = nios2_stub_none; |
| 2031 | hsh->hh = NULL; |
| 2032 | hsh->id_sec = NULL; |
| 2033 | } |
| 2034 | |
| 2035 | return entry; |
| 2036 | } |
| 2037 | |
| 2038 | /* Create an entry in a Nios II ELF linker hash table. */ |
| 2039 | static struct bfd_hash_entry * |
| 2040 | link_hash_newfunc (struct bfd_hash_entry *entry, |
| 2041 | struct bfd_hash_table *table, const char *string) |
| 2042 | { |
| 2043 | /* Allocate the structure if it has not already been allocated by a |
| 2044 | subclass. */ |
| 2045 | if (entry == NULL) |
| 2046 | { |
| 2047 | entry = bfd_hash_allocate (table, |
| 2048 | sizeof (struct elf32_nios2_link_hash_entry)); |
| 2049 | if (entry == NULL) |
| 2050 | return entry; |
| 2051 | } |
| 2052 | |
| 2053 | /* Call the allocation method of the superclass. */ |
| 2054 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
| 2055 | if (entry) |
| 2056 | { |
| 2057 | struct elf32_nios2_link_hash_entry *eh; |
| 2058 | |
| 2059 | eh = (struct elf32_nios2_link_hash_entry *) entry; |
| 2060 | eh->hsh_cache = NULL; |
| 2061 | eh->dyn_relocs = NULL; |
| 2062 | eh->tls_type = GOT_UNKNOWN; |
| 2063 | eh->got_types_used = 0; |
| 2064 | } |
| 2065 | |
| 2066 | return entry; |
| 2067 | } |
| 2068 | |
| 2069 | /* Section name for stubs is the associated section name plus this |
| 2070 | string. */ |
| 2071 | #define STUB_SUFFIX ".stub" |
| 2072 | |
| 2073 | /* Build a name for an entry in the stub hash table. */ |
| 2074 | static char * |
| 2075 | nios2_stub_name (const asection *input_section, |
| 2076 | const asection *sym_sec, |
| 2077 | const struct elf32_nios2_link_hash_entry *hh, |
| 2078 | const Elf_Internal_Rela *rel, |
| 2079 | enum elf32_nios2_stub_type stub_type) |
| 2080 | { |
| 2081 | char *stub_name; |
| 2082 | bfd_size_type len; |
| 2083 | char stubpos = (stub_type == nios2_stub_call26_before) ? 'b' : 'a'; |
| 2084 | |
| 2085 | if (hh) |
| 2086 | { |
| 2087 | len = 8 + 1 + 1 + 1+ strlen (hh->root.root.root.string) + 1 + 8 + 1; |
| 2088 | stub_name = bfd_malloc (len); |
| 2089 | if (stub_name != NULL) |
| 2090 | { |
| 2091 | sprintf (stub_name, "%08x_%c_%s+%x", |
| 2092 | input_section->id & 0xffffffff, |
| 2093 | stubpos, |
| 2094 | hh->root.root.root.string, |
| 2095 | (int) rel->r_addend & 0xffffffff); |
| 2096 | } |
| 2097 | } |
| 2098 | else |
| 2099 | { |
| 2100 | len = 8 + 1 + 1 + 1+ 8 + 1 + 8 + 1 + 8 + 1; |
| 2101 | stub_name = bfd_malloc (len); |
| 2102 | if (stub_name != NULL) |
| 2103 | { |
| 2104 | sprintf (stub_name, "%08x_%c_%x:%x+%x", |
| 2105 | input_section->id & 0xffffffff, |
| 2106 | stubpos, |
| 2107 | sym_sec->id & 0xffffffff, |
| 2108 | (int) ELF32_R_SYM (rel->r_info) & 0xffffffff, |
| 2109 | (int) rel->r_addend & 0xffffffff); |
| 2110 | } |
| 2111 | } |
| 2112 | return stub_name; |
| 2113 | } |
| 2114 | |
| 2115 | /* Look up an entry in the stub hash. Stub entries are cached because |
| 2116 | creating the stub name takes a bit of time. */ |
| 2117 | static struct elf32_nios2_stub_hash_entry * |
| 2118 | nios2_get_stub_entry (const asection *input_section, |
| 2119 | const asection *sym_sec, |
| 2120 | struct elf32_nios2_link_hash_entry *hh, |
| 2121 | const Elf_Internal_Rela *rel, |
| 2122 | struct elf32_nios2_link_hash_table *htab, |
| 2123 | enum elf32_nios2_stub_type stub_type) |
| 2124 | { |
| 2125 | struct elf32_nios2_stub_hash_entry *hsh; |
| 2126 | const asection *id_sec; |
| 2127 | |
| 2128 | /* If this input section is part of a group of sections sharing one |
| 2129 | stub section, then use the id of the first/last section in the group, |
| 2130 | depending on the stub section placement relative to the group. |
| 2131 | Stub names need to include a section id, as there may well be |
| 2132 | more than one stub used to reach say, printf, and we need to |
| 2133 | distinguish between them. */ |
| 2134 | if (stub_type == nios2_stub_call26_before) |
| 2135 | id_sec = htab->stub_group[input_section->id].first_sec; |
| 2136 | else |
| 2137 | id_sec = htab->stub_group[input_section->id].last_sec; |
| 2138 | |
| 2139 | if (hh != NULL && hh->hsh_cache != NULL |
| 2140 | && hh->hsh_cache->hh == hh |
| 2141 | && hh->hsh_cache->id_sec == id_sec |
| 2142 | && hh->hsh_cache->stub_type == stub_type) |
| 2143 | { |
| 2144 | hsh = hh->hsh_cache; |
| 2145 | } |
| 2146 | else |
| 2147 | { |
| 2148 | char *stub_name; |
| 2149 | |
| 2150 | stub_name = nios2_stub_name (id_sec, sym_sec, hh, rel, stub_type); |
| 2151 | if (stub_name == NULL) |
| 2152 | return NULL; |
| 2153 | |
| 2154 | hsh = nios2_stub_hash_lookup (&htab->bstab, |
| 2155 | stub_name, FALSE, FALSE); |
| 2156 | |
| 2157 | if (hh != NULL) |
| 2158 | hh->hsh_cache = hsh; |
| 2159 | |
| 2160 | free (stub_name); |
| 2161 | } |
| 2162 | |
| 2163 | return hsh; |
| 2164 | } |
| 2165 | |
| 2166 | /* Add a new stub entry to the stub hash. Not all fields of the new |
| 2167 | stub entry are initialised. */ |
| 2168 | static struct elf32_nios2_stub_hash_entry * |
| 2169 | nios2_add_stub (const char *stub_name, |
| 2170 | asection *section, |
| 2171 | struct elf32_nios2_link_hash_table *htab, |
| 2172 | enum elf32_nios2_stub_type stub_type) |
| 2173 | { |
| 2174 | asection *link_sec; |
| 2175 | asection *stub_sec; |
| 2176 | asection **secptr, **linkptr; |
| 2177 | struct elf32_nios2_stub_hash_entry *hsh; |
| 2178 | bfd_boolean afterp; |
| 2179 | |
| 2180 | if (stub_type == nios2_stub_call26_before) |
| 2181 | { |
| 2182 | link_sec = htab->stub_group[section->id].first_sec; |
| 2183 | secptr = &(htab->stub_group[section->id].first_stub_sec); |
| 2184 | linkptr = &(htab->stub_group[link_sec->id].first_stub_sec); |
| 2185 | afterp = FALSE; |
| 2186 | } |
| 2187 | else |
| 2188 | { |
| 2189 | link_sec = htab->stub_group[section->id].last_sec; |
| 2190 | secptr = &(htab->stub_group[section->id].last_stub_sec); |
| 2191 | linkptr = &(htab->stub_group[link_sec->id].last_stub_sec); |
| 2192 | afterp = TRUE; |
| 2193 | } |
| 2194 | stub_sec = *secptr; |
| 2195 | if (stub_sec == NULL) |
| 2196 | { |
| 2197 | stub_sec = *linkptr; |
| 2198 | if (stub_sec == NULL) |
| 2199 | { |
| 2200 | size_t namelen; |
| 2201 | bfd_size_type len; |
| 2202 | char *s_name; |
| 2203 | |
| 2204 | namelen = strlen (link_sec->name); |
| 2205 | len = namelen + sizeof (STUB_SUFFIX); |
| 2206 | s_name = bfd_alloc (htab->stub_bfd, len); |
| 2207 | if (s_name == NULL) |
| 2208 | return NULL; |
| 2209 | |
| 2210 | memcpy (s_name, link_sec->name, namelen); |
| 2211 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); |
| 2212 | |
| 2213 | stub_sec = (*htab->add_stub_section) (s_name, link_sec, afterp); |
| 2214 | if (stub_sec == NULL) |
| 2215 | return NULL; |
| 2216 | *linkptr = stub_sec; |
| 2217 | } |
| 2218 | *secptr = stub_sec; |
| 2219 | } |
| 2220 | |
| 2221 | /* Enter this entry into the linker stub hash table. */ |
| 2222 | hsh = nios2_stub_hash_lookup (&htab->bstab, stub_name, |
| 2223 | TRUE, FALSE); |
| 2224 | if (hsh == NULL) |
| 2225 | { |
| 2226 | /* xgettext:c-format */ |
| 2227 | _bfd_error_handler (_("%B: cannot create stub entry %s"), |
| 2228 | section->owner, |
| 2229 | stub_name); |
| 2230 | return NULL; |
| 2231 | } |
| 2232 | |
| 2233 | hsh->stub_sec = stub_sec; |
| 2234 | hsh->stub_offset = 0; |
| 2235 | hsh->id_sec = link_sec; |
| 2236 | return hsh; |
| 2237 | } |
| 2238 | |
| 2239 | /* Set up various things so that we can make a list of input sections |
| 2240 | for each output section included in the link. Returns -1 on error, |
| 2241 | 0 when no stubs will be needed, and 1 on success. */ |
| 2242 | int |
| 2243 | nios2_elf32_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info) |
| 2244 | { |
| 2245 | bfd *input_bfd; |
| 2246 | unsigned int bfd_count; |
| 2247 | unsigned int top_id, top_index; |
| 2248 | asection *section; |
| 2249 | asection **input_list, **list; |
| 2250 | bfd_size_type amt; |
| 2251 | struct elf32_nios2_link_hash_table *htab = elf32_nios2_hash_table (info); |
| 2252 | |
| 2253 | /* Count the number of input BFDs and find the top input section id. */ |
| 2254 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; |
| 2255 | input_bfd != NULL; |
| 2256 | input_bfd = input_bfd->link.next) |
| 2257 | { |
| 2258 | bfd_count += 1; |
| 2259 | for (section = input_bfd->sections; |
| 2260 | section != NULL; |
| 2261 | section = section->next) |
| 2262 | { |
| 2263 | if (top_id < section->id) |
| 2264 | top_id = section->id; |
| 2265 | } |
| 2266 | } |
| 2267 | |
| 2268 | htab->bfd_count = bfd_count; |
| 2269 | |
| 2270 | amt = sizeof (struct map_stub) * (top_id + 1); |
| 2271 | htab->stub_group = bfd_zmalloc (amt); |
| 2272 | if (htab->stub_group == NULL) |
| 2273 | return -1; |
| 2274 | |
| 2275 | /* We can't use output_bfd->section_count here to find the top output |
| 2276 | section index as some sections may have been removed, and |
| 2277 | strip_excluded_output_sections doesn't renumber the indices. */ |
| 2278 | for (section = output_bfd->sections, top_index = 0; |
| 2279 | section != NULL; |
| 2280 | section = section->next) |
| 2281 | { |
| 2282 | if (top_index < section->index) |
| 2283 | top_index = section->index; |
| 2284 | } |
| 2285 | |
| 2286 | htab->top_index = top_index; |
| 2287 | amt = sizeof (asection *) * (top_index + 1); |
| 2288 | input_list = bfd_malloc (amt); |
| 2289 | htab->input_list = input_list; |
| 2290 | if (input_list == NULL) |
| 2291 | return -1; |
| 2292 | |
| 2293 | /* For sections we aren't interested in, mark their entries with a |
| 2294 | value we can check later. */ |
| 2295 | list = input_list + top_index; |
| 2296 | do |
| 2297 | *list = bfd_abs_section_ptr; |
| 2298 | while (list-- != input_list); |
| 2299 | |
| 2300 | for (section = output_bfd->sections; |
| 2301 | section != NULL; |
| 2302 | section = section->next) |
| 2303 | { |
| 2304 | /* FIXME: This is a bit of hack. Currently our .ctors and .dtors |
| 2305 | * have PC relative relocs in them but no code flag set. */ |
| 2306 | if (((section->flags & SEC_CODE) != 0) || |
| 2307 | strcmp(".ctors", section->name) || |
| 2308 | strcmp(".dtors", section->name)) |
| 2309 | input_list[section->index] = NULL; |
| 2310 | } |
| 2311 | |
| 2312 | return 1; |
| 2313 | } |
| 2314 | |
| 2315 | /* The linker repeatedly calls this function for each input section, |
| 2316 | in the order that input sections are linked into output sections. |
| 2317 | Build lists of input sections to determine groupings between which |
| 2318 | we may insert linker stubs. */ |
| 2319 | void |
| 2320 | nios2_elf32_next_input_section (struct bfd_link_info *info, asection *isec) |
| 2321 | { |
| 2322 | struct elf32_nios2_link_hash_table *htab = elf32_nios2_hash_table (info); |
| 2323 | |
| 2324 | if (isec->output_section->index <= htab->top_index) |
| 2325 | { |
| 2326 | asection **list = htab->input_list + isec->output_section->index; |
| 2327 | if (*list != bfd_abs_section_ptr) |
| 2328 | { |
| 2329 | /* Steal the last_sec pointer for our list. |
| 2330 | This happens to make the list in reverse order, |
| 2331 | which is what we want. */ |
| 2332 | htab->stub_group[isec->id].last_sec = *list; |
| 2333 | *list = isec; |
| 2334 | } |
| 2335 | } |
| 2336 | } |
| 2337 | |
| 2338 | /* Segment mask for CALL26 relocation relaxation. */ |
| 2339 | #define CALL26_SEGMENT(x) ((x) & 0xf0000000) |
| 2340 | |
| 2341 | /* Fudge factor for approximate maximum size of all stubs that might |
| 2342 | be inserted by the linker. This does not actually limit the number |
| 2343 | of stubs that might be inserted, and only affects strategy for grouping |
| 2344 | and placement of stubs. Perhaps this should be computed based on number |
| 2345 | of relocations seen, or be specifiable on the command line. */ |
| 2346 | #define MAX_STUB_SECTION_SIZE 0xffff |
| 2347 | |
| 2348 | /* See whether we can group stub sections together. Grouping stub |
| 2349 | sections may result in fewer stubs. More importantly, we need to |
| 2350 | put all .init* and .fini* stubs at the end of the .init or |
| 2351 | .fini output sections respectively, because glibc splits the |
| 2352 | _init and _fini functions into multiple parts. Putting a stub in |
| 2353 | the middle of a function is not a good idea. |
| 2354 | Rather than computing groups of a maximum fixed size, for Nios II |
| 2355 | CALL26 relaxation it makes more sense to compute the groups based on |
| 2356 | sections that fit within a 256MB address segment. Also do not allow |
| 2357 | a group to span more than one output section, since different output |
| 2358 | sections might correspond to different memory banks on a bare-metal |
| 2359 | target, etc. */ |
| 2360 | static void |
| 2361 | group_sections (struct elf32_nios2_link_hash_table *htab) |
| 2362 | { |
| 2363 | asection **list = htab->input_list + htab->top_index; |
| 2364 | do |
| 2365 | { |
| 2366 | /* The list is in reverse order so we'll search backwards looking |
| 2367 | for the first section that begins in the same memory segment, |
| 2368 | marking sections along the way to point at the tail for this |
| 2369 | group. */ |
| 2370 | asection *tail = *list; |
| 2371 | if (tail == bfd_abs_section_ptr) |
| 2372 | continue; |
| 2373 | while (tail != NULL) |
| 2374 | { |
| 2375 | bfd_vma start = tail->output_section->vma + tail->output_offset; |
| 2376 | bfd_vma end = start + tail->size; |
| 2377 | bfd_vma segment = CALL26_SEGMENT (end); |
| 2378 | asection *prev; |
| 2379 | |
| 2380 | if (segment != CALL26_SEGMENT (start) |
| 2381 | || segment != CALL26_SEGMENT (end + MAX_STUB_SECTION_SIZE)) |
| 2382 | /* This section spans more than one memory segment, or is |
| 2383 | close enough to the end of the segment that adding stub |
| 2384 | sections before it might cause it to move so that it |
| 2385 | spans memory segments, or that stubs added at the end of |
| 2386 | this group might overflow into the next memory segment. |
| 2387 | Put it in a group by itself to localize the effects. */ |
| 2388 | { |
| 2389 | prev = htab->stub_group[tail->id].last_sec; |
| 2390 | htab->stub_group[tail->id].last_sec = tail; |
| 2391 | htab->stub_group[tail->id].first_sec = tail; |
| 2392 | } |
| 2393 | else |
| 2394 | /* Collect more sections for this group. */ |
| 2395 | { |
| 2396 | asection *curr, *first; |
| 2397 | for (curr = tail; ; curr = prev) |
| 2398 | { |
| 2399 | prev = htab->stub_group[curr->id].last_sec; |
| 2400 | if (!prev |
| 2401 | || tail->output_section != prev->output_section |
| 2402 | || (CALL26_SEGMENT (prev->output_section->vma |
| 2403 | + prev->output_offset) |
| 2404 | != segment)) |
| 2405 | break; |
| 2406 | } |
| 2407 | first = curr; |
| 2408 | for (curr = tail; ; curr = prev) |
| 2409 | { |
| 2410 | prev = htab->stub_group[curr->id].last_sec; |
| 2411 | htab->stub_group[curr->id].last_sec = tail; |
| 2412 | htab->stub_group[curr->id].first_sec = first; |
| 2413 | if (curr == first) |
| 2414 | break; |
| 2415 | } |
| 2416 | } |
| 2417 | |
| 2418 | /* Reset tail for the next group. */ |
| 2419 | tail = prev; |
| 2420 | } |
| 2421 | } |
| 2422 | while (list-- != htab->input_list); |
| 2423 | free (htab->input_list); |
| 2424 | } |
| 2425 | |
| 2426 | /* Determine the type of stub needed, if any, for a call. */ |
| 2427 | static enum elf32_nios2_stub_type |
| 2428 | nios2_type_of_stub (asection *input_sec, |
| 2429 | const Elf_Internal_Rela *rel, |
| 2430 | struct elf32_nios2_link_hash_entry *hh, |
| 2431 | struct elf32_nios2_link_hash_table *htab, |
| 2432 | bfd_vma destination, |
| 2433 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
| 2434 | { |
| 2435 | bfd_vma location, segment, start, end; |
| 2436 | asection *s0, *s1, *s; |
| 2437 | |
| 2438 | if (hh != NULL && |
| 2439 | !(hh->root.root.type == bfd_link_hash_defined |
| 2440 | || hh->root.root.type == bfd_link_hash_defweak)) |
| 2441 | return nios2_stub_none; |
| 2442 | |
| 2443 | /* Determine where the call point is. */ |
| 2444 | location = (input_sec->output_section->vma |
| 2445 | + input_sec->output_offset + rel->r_offset); |
| 2446 | segment = CALL26_SEGMENT (location); |
| 2447 | |
| 2448 | /* Nios II CALL and JMPI instructions can transfer control to addresses |
| 2449 | within the same 256MB segment as the PC. */ |
| 2450 | if (segment == CALL26_SEGMENT (destination)) |
| 2451 | return nios2_stub_none; |
| 2452 | |
| 2453 | /* Find the start and end addresses of the stub group. Also account for |
| 2454 | any already-created stub sections for this group. Note that for stubs |
| 2455 | in the end section, only the first instruction of the last stub |
| 2456 | (12 bytes long) needs to be within range. */ |
| 2457 | s0 = htab->stub_group[input_sec->id].first_sec; |
| 2458 | s = htab->stub_group[s0->id].first_stub_sec; |
| 2459 | if (s != NULL && s->size > 0) |
| 2460 | start = s->output_section->vma + s->output_offset; |
| 2461 | else |
| 2462 | start = s0->output_section->vma + s0->output_offset; |
| 2463 | |
| 2464 | s1 = htab->stub_group[input_sec->id].last_sec; |
| 2465 | s = htab->stub_group[s1->id].last_stub_sec; |
| 2466 | if (s != NULL && s->size > 0) |
| 2467 | end = s->output_section->vma + s->output_offset + s->size - 8; |
| 2468 | else |
| 2469 | end = s1->output_section->vma + s1->output_offset + s1->size; |
| 2470 | |
| 2471 | BFD_ASSERT (start < end); |
| 2472 | BFD_ASSERT (start <= location); |
| 2473 | BFD_ASSERT (location < end); |
| 2474 | |
| 2475 | /* Put stubs at the end of the group unless that is not a valid |
| 2476 | location and the beginning of the group is. It might be that |
| 2477 | neither the beginning nor end works if we have an input section |
| 2478 | so large that it spans multiple segment boundaries. In that |
| 2479 | case, punt; the end result will be a relocation overflow error no |
| 2480 | matter what we do here. |
| 2481 | |
| 2482 | Note that adding stubs pushes up the addresses of all subsequent |
| 2483 | sections, so that stubs allocated on one pass through the |
| 2484 | relaxation loop may not be valid on the next pass. (E.g., we may |
| 2485 | allocate a stub at the beginning of the section on one pass and |
| 2486 | find that the call site has been bumped into the next memory |
| 2487 | segment on the next pass.) The important thing to note is that |
| 2488 | we never try to reclaim the space allocated to such unused stubs, |
| 2489 | so code size and section addresses can only increase with each |
| 2490 | iteration. Accounting for the start and end addresses of the |
| 2491 | already-created stub sections ensures that when the algorithm |
| 2492 | converges, it converges accurately, with the entire appropriate |
| 2493 | stub section accessible from the call site and not just the |
| 2494 | address at the start or end of the stub group proper. */ |
| 2495 | |
| 2496 | if (segment == CALL26_SEGMENT (end)) |
| 2497 | return nios2_stub_call26_after; |
| 2498 | else if (segment == CALL26_SEGMENT (start)) |
| 2499 | return nios2_stub_call26_before; |
| 2500 | else |
| 2501 | /* Perhaps this should be a dedicated error code. */ |
| 2502 | return nios2_stub_none; |
| 2503 | } |
| 2504 | |
| 2505 | static bfd_boolean |
| 2506 | nios2_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg ATTRIBUTE_UNUSED) |
| 2507 | { |
| 2508 | struct elf32_nios2_stub_hash_entry *hsh |
| 2509 | = (struct elf32_nios2_stub_hash_entry *) gen_entry; |
| 2510 | asection *stub_sec = hsh->stub_sec; |
| 2511 | bfd_vma sym_value; |
| 2512 | |
| 2513 | /* Make a note of the offset within the stubs for this entry. */ |
| 2514 | hsh->stub_offset = stub_sec->size; |
| 2515 | |
| 2516 | switch (hsh->stub_type) |
| 2517 | { |
| 2518 | case nios2_stub_call26_before: |
| 2519 | case nios2_stub_call26_after: |
| 2520 | /* A call26 stub looks like: |
| 2521 | orhi at, %hiadj(dest) |
| 2522 | addi at, at, %lo(dest) |
| 2523 | jmp at |
| 2524 | Note that call/jmpi instructions can't be used in PIC code |
| 2525 | so there is no reason for the stub to be PIC, either. */ |
| 2526 | sym_value = (hsh->target_value |
| 2527 | + hsh->target_section->output_offset |
| 2528 | + hsh->target_section->output_section->vma |
| 2529 | + hsh->addend); |
| 2530 | |
| 2531 | nios2_elf32_install_data (stub_sec, nios2_call26_stub_entry, |
| 2532 | hsh->stub_offset, 3); |
| 2533 | nios2_elf32_install_imm16 (stub_sec, hsh->stub_offset, |
| 2534 | hiadj (sym_value)); |
| 2535 | nios2_elf32_install_imm16 (stub_sec, hsh->stub_offset + 4, |
| 2536 | (sym_value & 0xffff)); |
| 2537 | stub_sec->size += 12; |
| 2538 | break; |
| 2539 | default: |
| 2540 | BFD_FAIL (); |
| 2541 | return FALSE; |
| 2542 | } |
| 2543 | |
| 2544 | return TRUE; |
| 2545 | } |
| 2546 | |
| 2547 | /* As above, but don't actually build the stub. Just bump offset so |
| 2548 | we know stub section sizes. */ |
| 2549 | static bfd_boolean |
| 2550 | nios2_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg ATTRIBUTE_UNUSED) |
| 2551 | { |
| 2552 | struct elf32_nios2_stub_hash_entry *hsh |
| 2553 | = (struct elf32_nios2_stub_hash_entry *) gen_entry; |
| 2554 | |
| 2555 | switch (hsh->stub_type) |
| 2556 | { |
| 2557 | case nios2_stub_call26_before: |
| 2558 | case nios2_stub_call26_after: |
| 2559 | hsh->stub_sec->size += 12; |
| 2560 | break; |
| 2561 | default: |
| 2562 | BFD_FAIL (); |
| 2563 | return FALSE; |
| 2564 | } |
| 2565 | return TRUE; |
| 2566 | } |
| 2567 | |
| 2568 | /* Read in all local syms for all input bfds. |
| 2569 | Returns -1 on error, 0 otherwise. */ |
| 2570 | |
| 2571 | static int |
| 2572 | get_local_syms (bfd *output_bfd ATTRIBUTE_UNUSED, bfd *input_bfd, |
| 2573 | struct bfd_link_info *info) |
| 2574 | { |
| 2575 | unsigned int bfd_indx; |
| 2576 | Elf_Internal_Sym *local_syms, **all_local_syms; |
| 2577 | struct elf32_nios2_link_hash_table *htab = elf32_nios2_hash_table (info); |
| 2578 | |
| 2579 | /* We want to read in symbol extension records only once. To do this |
| 2580 | we need to read in the local symbols in parallel and save them for |
| 2581 | later use; so hold pointers to the local symbols in an array. */ |
| 2582 | bfd_size_type amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count; |
| 2583 | all_local_syms = bfd_zmalloc (amt); |
| 2584 | htab->all_local_syms = all_local_syms; |
| 2585 | if (all_local_syms == NULL) |
| 2586 | return -1; |
| 2587 | |
| 2588 | /* Walk over all the input BFDs, swapping in local symbols. */ |
| 2589 | for (bfd_indx = 0; |
| 2590 | input_bfd != NULL; |
| 2591 | input_bfd = input_bfd->link.next, bfd_indx++) |
| 2592 | { |
| 2593 | Elf_Internal_Shdr *symtab_hdr; |
| 2594 | |
| 2595 | /* We'll need the symbol table in a second. */ |
| 2596 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 2597 | if (symtab_hdr->sh_info == 0) |
| 2598 | continue; |
| 2599 | |
| 2600 | /* We need an array of the local symbols attached to the input bfd. */ |
| 2601 | local_syms = (Elf_Internal_Sym *) symtab_hdr->contents; |
| 2602 | if (local_syms == NULL) |
| 2603 | { |
| 2604 | local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, |
| 2605 | symtab_hdr->sh_info, 0, |
| 2606 | NULL, NULL, NULL); |
| 2607 | /* Cache them for elf_link_input_bfd. */ |
| 2608 | symtab_hdr->contents = (unsigned char *) local_syms; |
| 2609 | } |
| 2610 | if (local_syms == NULL) |
| 2611 | return -1; |
| 2612 | |
| 2613 | all_local_syms[bfd_indx] = local_syms; |
| 2614 | } |
| 2615 | |
| 2616 | return 0; |
| 2617 | } |
| 2618 | |
| 2619 | /* Determine and set the size of the stub section for a final link. */ |
| 2620 | bfd_boolean |
| 2621 | nios2_elf32_size_stubs (bfd *output_bfd, bfd *stub_bfd, |
| 2622 | struct bfd_link_info *info, |
| 2623 | asection *(*add_stub_section) (const char *, |
| 2624 | asection *, bfd_boolean), |
| 2625 | void (*layout_sections_again) (void)) |
| 2626 | { |
| 2627 | bfd_boolean stub_changed = FALSE; |
| 2628 | struct elf32_nios2_link_hash_table *htab = elf32_nios2_hash_table (info); |
| 2629 | |
| 2630 | /* Stash our params away. */ |
| 2631 | htab->stub_bfd = stub_bfd; |
| 2632 | htab->add_stub_section = add_stub_section; |
| 2633 | htab->layout_sections_again = layout_sections_again; |
| 2634 | |
| 2635 | /* FIXME: We only compute the section groups once. This could cause |
| 2636 | problems if adding a large stub section causes following sections, |
| 2637 | or parts of them, to move into another segment. However, this seems |
| 2638 | to be consistent with the way other back ends handle this.... */ |
| 2639 | group_sections (htab); |
| 2640 | |
| 2641 | if (get_local_syms (output_bfd, info->input_bfds, info)) |
| 2642 | { |
| 2643 | if (htab->all_local_syms) |
| 2644 | goto error_ret_free_local; |
| 2645 | return FALSE; |
| 2646 | } |
| 2647 | |
| 2648 | while (1) |
| 2649 | { |
| 2650 | bfd *input_bfd; |
| 2651 | unsigned int bfd_indx; |
| 2652 | asection *stub_sec; |
| 2653 | |
| 2654 | for (input_bfd = info->input_bfds, bfd_indx = 0; |
| 2655 | input_bfd != NULL; |
| 2656 | input_bfd = input_bfd->link.next, bfd_indx++) |
| 2657 | { |
| 2658 | Elf_Internal_Shdr *symtab_hdr; |
| 2659 | asection *section; |
| 2660 | Elf_Internal_Sym *local_syms; |
| 2661 | |
| 2662 | /* We'll need the symbol table in a second. */ |
| 2663 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 2664 | if (symtab_hdr->sh_info == 0) |
| 2665 | continue; |
| 2666 | |
| 2667 | local_syms = htab->all_local_syms[bfd_indx]; |
| 2668 | |
| 2669 | /* Walk over each section attached to the input bfd. */ |
| 2670 | for (section = input_bfd->sections; |
| 2671 | section != NULL; |
| 2672 | section = section->next) |
| 2673 | { |
| 2674 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
| 2675 | |
| 2676 | /* If there aren't any relocs, then there's nothing more |
| 2677 | to do. */ |
| 2678 | if ((section->flags & SEC_RELOC) == 0 |
| 2679 | || section->reloc_count == 0) |
| 2680 | continue; |
| 2681 | |
| 2682 | /* If this section is a link-once section that will be |
| 2683 | discarded, then don't create any stubs. */ |
| 2684 | if (section->output_section == NULL |
| 2685 | || section->output_section->owner != output_bfd) |
| 2686 | continue; |
| 2687 | |
| 2688 | /* Get the relocs. */ |
| 2689 | internal_relocs |
| 2690 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
| 2691 | info->keep_memory); |
| 2692 | if (internal_relocs == NULL) |
| 2693 | goto error_ret_free_local; |
| 2694 | |
| 2695 | /* Now examine each relocation. */ |
| 2696 | irela = internal_relocs; |
| 2697 | irelaend = irela + section->reloc_count; |
| 2698 | for (; irela < irelaend; irela++) |
| 2699 | { |
| 2700 | unsigned int r_type, r_indx; |
| 2701 | enum elf32_nios2_stub_type stub_type; |
| 2702 | struct elf32_nios2_stub_hash_entry *hsh; |
| 2703 | asection *sym_sec; |
| 2704 | bfd_vma sym_value; |
| 2705 | bfd_vma destination; |
| 2706 | struct elf32_nios2_link_hash_entry *hh; |
| 2707 | char *stub_name; |
| 2708 | const asection *id_sec; |
| 2709 | |
| 2710 | r_type = ELF32_R_TYPE (irela->r_info); |
| 2711 | r_indx = ELF32_R_SYM (irela->r_info); |
| 2712 | |
| 2713 | if (r_type >= (unsigned int) R_NIOS2_ILLEGAL) |
| 2714 | { |
| 2715 | bfd_set_error (bfd_error_bad_value); |
| 2716 | error_ret_free_internal: |
| 2717 | if (elf_section_data (section)->relocs == NULL) |
| 2718 | free (internal_relocs); |
| 2719 | goto error_ret_free_local; |
| 2720 | } |
| 2721 | |
| 2722 | /* Only look for stubs on CALL and JMPI instructions. */ |
| 2723 | if (r_type != (unsigned int) R_NIOS2_CALL26) |
| 2724 | continue; |
| 2725 | |
| 2726 | /* Now determine the call target, its name, value, |
| 2727 | section. */ |
| 2728 | sym_sec = NULL; |
| 2729 | sym_value = 0; |
| 2730 | destination = 0; |
| 2731 | hh = NULL; |
| 2732 | if (r_indx < symtab_hdr->sh_info) |
| 2733 | { |
| 2734 | /* It's a local symbol. */ |
| 2735 | Elf_Internal_Sym *sym; |
| 2736 | Elf_Internal_Shdr *hdr; |
| 2737 | unsigned int shndx; |
| 2738 | |
| 2739 | sym = local_syms + r_indx; |
| 2740 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) |
| 2741 | sym_value = sym->st_value; |
| 2742 | shndx = sym->st_shndx; |
| 2743 | if (shndx < elf_numsections (input_bfd)) |
| 2744 | { |
| 2745 | hdr = elf_elfsections (input_bfd)[shndx]; |
| 2746 | sym_sec = hdr->bfd_section; |
| 2747 | destination = (sym_value + irela->r_addend |
| 2748 | + sym_sec->output_offset |
| 2749 | + sym_sec->output_section->vma); |
| 2750 | } |
| 2751 | } |
| 2752 | else |
| 2753 | { |
| 2754 | /* It's an external symbol. */ |
| 2755 | int e_indx; |
| 2756 | |
| 2757 | e_indx = r_indx - symtab_hdr->sh_info; |
| 2758 | hh = ((struct elf32_nios2_link_hash_entry *) |
| 2759 | elf_sym_hashes (input_bfd)[e_indx]); |
| 2760 | |
| 2761 | while (hh->root.root.type == bfd_link_hash_indirect |
| 2762 | || hh->root.root.type == bfd_link_hash_warning) |
| 2763 | hh = ((struct elf32_nios2_link_hash_entry *) |
| 2764 | hh->root.root.u.i.link); |
| 2765 | |
| 2766 | if (hh->root.root.type == bfd_link_hash_defined |
| 2767 | || hh->root.root.type == bfd_link_hash_defweak) |
| 2768 | { |
| 2769 | sym_sec = hh->root.root.u.def.section; |
| 2770 | sym_value = hh->root.root.u.def.value; |
| 2771 | |
| 2772 | if (sym_sec->output_section != NULL) |
| 2773 | destination = (sym_value + irela->r_addend |
| 2774 | + sym_sec->output_offset |
| 2775 | + sym_sec->output_section->vma); |
| 2776 | else |
| 2777 | continue; |
| 2778 | } |
| 2779 | else if (hh->root.root.type == bfd_link_hash_undefweak) |
| 2780 | { |
| 2781 | if (! bfd_link_pic (info)) |
| 2782 | continue; |
| 2783 | } |
| 2784 | else if (hh->root.root.type == bfd_link_hash_undefined) |
| 2785 | { |
| 2786 | if (! (info->unresolved_syms_in_objects == RM_IGNORE |
| 2787 | && (ELF_ST_VISIBILITY (hh->root.other) |
| 2788 | == STV_DEFAULT))) |
| 2789 | continue; |
| 2790 | } |
| 2791 | else |
| 2792 | { |
| 2793 | bfd_set_error (bfd_error_bad_value); |
| 2794 | goto error_ret_free_internal; |
| 2795 | } |
| 2796 | } |
| 2797 | |
| 2798 | /* Determine what (if any) linker stub is needed. */ |
| 2799 | stub_type = nios2_type_of_stub (section, irela, hh, htab, |
| 2800 | destination, info); |
| 2801 | if (stub_type == nios2_stub_none) |
| 2802 | continue; |
| 2803 | |
| 2804 | /* Support for grouping stub sections. */ |
| 2805 | if (stub_type == nios2_stub_call26_before) |
| 2806 | id_sec = htab->stub_group[section->id].first_sec; |
| 2807 | else |
| 2808 | id_sec = htab->stub_group[section->id].last_sec; |
| 2809 | |
| 2810 | /* Get the name of this stub. */ |
| 2811 | stub_name = nios2_stub_name (id_sec, sym_sec, hh, irela, |
| 2812 | stub_type); |
| 2813 | if (!stub_name) |
| 2814 | goto error_ret_free_internal; |
| 2815 | |
| 2816 | hsh = nios2_stub_hash_lookup (&htab->bstab, |
| 2817 | stub_name, |
| 2818 | FALSE, FALSE); |
| 2819 | if (hsh != NULL) |
| 2820 | { |
| 2821 | /* The proper stub has already been created. */ |
| 2822 | free (stub_name); |
| 2823 | continue; |
| 2824 | } |
| 2825 | |
| 2826 | hsh = nios2_add_stub (stub_name, section, htab, stub_type); |
| 2827 | if (hsh == NULL) |
| 2828 | { |
| 2829 | free (stub_name); |
| 2830 | goto error_ret_free_internal; |
| 2831 | } |
| 2832 | hsh->target_value = sym_value; |
| 2833 | hsh->target_section = sym_sec; |
| 2834 | hsh->stub_type = stub_type; |
| 2835 | hsh->hh = hh; |
| 2836 | hsh->addend = irela->r_addend; |
| 2837 | stub_changed = TRUE; |
| 2838 | } |
| 2839 | |
| 2840 | /* We're done with the internal relocs, free them. */ |
| 2841 | if (elf_section_data (section)->relocs == NULL) |
| 2842 | free (internal_relocs); |
| 2843 | } |
| 2844 | } |
| 2845 | |
| 2846 | if (!stub_changed) |
| 2847 | break; |
| 2848 | |
| 2849 | /* OK, we've added some stubs. Find out the new size of the |
| 2850 | stub sections. */ |
| 2851 | for (stub_sec = htab->stub_bfd->sections; |
| 2852 | stub_sec != NULL; |
| 2853 | stub_sec = stub_sec->next) |
| 2854 | stub_sec->size = 0; |
| 2855 | |
| 2856 | bfd_hash_traverse (&htab->bstab, nios2_size_one_stub, htab); |
| 2857 | |
| 2858 | /* Ask the linker to do its stuff. */ |
| 2859 | (*htab->layout_sections_again) (); |
| 2860 | stub_changed = FALSE; |
| 2861 | } |
| 2862 | |
| 2863 | free (htab->all_local_syms); |
| 2864 | return TRUE; |
| 2865 | |
| 2866 | error_ret_free_local: |
| 2867 | free (htab->all_local_syms); |
| 2868 | return FALSE; |
| 2869 | } |
| 2870 | |
| 2871 | /* Build all the stubs associated with the current output file. The |
| 2872 | stubs are kept in a hash table attached to the main linker hash |
| 2873 | table. This function is called via nios2elf_finish in the linker. */ |
| 2874 | bfd_boolean |
| 2875 | nios2_elf32_build_stubs (struct bfd_link_info *info) |
| 2876 | { |
| 2877 | asection *stub_sec; |
| 2878 | struct bfd_hash_table *table; |
| 2879 | struct elf32_nios2_link_hash_table *htab; |
| 2880 | |
| 2881 | htab = elf32_nios2_hash_table (info); |
| 2882 | |
| 2883 | for (stub_sec = htab->stub_bfd->sections; |
| 2884 | stub_sec != NULL; |
| 2885 | stub_sec = stub_sec->next) |
| 2886 | /* The stub_bfd may contain non-stub sections if it is also the |
| 2887 | dynobj. Any such non-stub sections are created with the |
| 2888 | SEC_LINKER_CREATED flag set, while stub sections do not |
| 2889 | have that flag. Ignore any non-stub sections here. */ |
| 2890 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
| 2891 | { |
| 2892 | bfd_size_type size; |
| 2893 | |
| 2894 | /* Allocate memory to hold the linker stubs. */ |
| 2895 | size = stub_sec->size; |
| 2896 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); |
| 2897 | if (stub_sec->contents == NULL && size != 0) |
| 2898 | return FALSE; |
| 2899 | stub_sec->size = 0; |
| 2900 | } |
| 2901 | |
| 2902 | /* Build the stubs as directed by the stub hash table. */ |
| 2903 | table = &htab->bstab; |
| 2904 | bfd_hash_traverse (table, nios2_build_one_stub, info); |
| 2905 | |
| 2906 | return TRUE; |
| 2907 | } |
| 2908 | |
| 2909 | |
| 2910 | #define is_nios2_elf(bfd) \ |
| 2911 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ |
| 2912 | && elf_object_id (bfd) == NIOS2_ELF_DATA) |
| 2913 | |
| 2914 | /* Merge backend specific data from an object file to the output |
| 2915 | object file when linking. */ |
| 2916 | |
| 2917 | static bfd_boolean |
| 2918 | nios2_elf32_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
| 2919 | { |
| 2920 | bfd *obfd = info->output_bfd; |
| 2921 | flagword old_flags; |
| 2922 | flagword new_flags; |
| 2923 | |
| 2924 | if (!is_nios2_elf (ibfd) || !is_nios2_elf (obfd)) |
| 2925 | return TRUE; |
| 2926 | |
| 2927 | /* Check if we have the same endianness. */ |
| 2928 | if (! _bfd_generic_verify_endian_match (ibfd, info)) |
| 2929 | return FALSE; |
| 2930 | |
| 2931 | new_flags = elf_elfheader (ibfd)->e_flags; |
| 2932 | old_flags = elf_elfheader (obfd)->e_flags; |
| 2933 | if (!elf_flags_init (obfd)) |
| 2934 | { |
| 2935 | /* First call, no flags set. */ |
| 2936 | elf_flags_init (obfd) = TRUE; |
| 2937 | elf_elfheader (obfd)->e_flags = new_flags; |
| 2938 | |
| 2939 | switch (new_flags) |
| 2940 | { |
| 2941 | default: |
| 2942 | case EF_NIOS2_ARCH_R1: |
| 2943 | bfd_default_set_arch_mach (obfd, bfd_arch_nios2, bfd_mach_nios2r1); |
| 2944 | break; |
| 2945 | case EF_NIOS2_ARCH_R2: |
| 2946 | if (bfd_big_endian (ibfd)) |
| 2947 | { |
| 2948 | _bfd_error_handler |
| 2949 | (_("error: %B: Big-endian R2 is not supported."), ibfd); |
| 2950 | bfd_set_error (bfd_error_bad_value); |
| 2951 | return FALSE; |
| 2952 | } |
| 2953 | bfd_default_set_arch_mach (obfd, bfd_arch_nios2, bfd_mach_nios2r2); |
| 2954 | break; |
| 2955 | } |
| 2956 | } |
| 2957 | |
| 2958 | /* Incompatible flags. */ |
| 2959 | else if (new_flags != old_flags) |
| 2960 | { |
| 2961 | /* So far, the only incompatible flags denote incompatible |
| 2962 | architectures. */ |
| 2963 | _bfd_error_handler |
| 2964 | /* xgettext:c-format */ |
| 2965 | (_("error: %B: Conflicting CPU architectures %d/%d"), |
| 2966 | ibfd, new_flags, old_flags); |
| 2967 | bfd_set_error (bfd_error_bad_value); |
| 2968 | return FALSE; |
| 2969 | } |
| 2970 | |
| 2971 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
| 2972 | _bfd_elf_merge_object_attributes (ibfd, info); |
| 2973 | |
| 2974 | return TRUE; |
| 2975 | } |
| 2976 | |
| 2977 | |
| 2978 | /* Implement bfd_elf32_bfd_reloc_type_lookup: |
| 2979 | Given a BFD reloc type, return a howto structure. */ |
| 2980 | static reloc_howto_type * |
| 2981 | nios2_elf32_bfd_reloc_type_lookup (bfd *abfd, |
| 2982 | bfd_reloc_code_real_type code) |
| 2983 | { |
| 2984 | int i; |
| 2985 | |
| 2986 | for (i = 0; |
| 2987 | i < (int) (sizeof (nios2_reloc_map) / sizeof (struct elf_reloc_map)); |
| 2988 | ++i) |
| 2989 | if (nios2_reloc_map[i].bfd_val == code) |
| 2990 | return lookup_howto (nios2_reloc_map[i].elf_val, abfd); |
| 2991 | return NULL; |
| 2992 | } |
| 2993 | |
| 2994 | /* Implement bfd_elf32_bfd_reloc_name_lookup: |
| 2995 | Given a reloc name, return a howto structure. */ |
| 2996 | static reloc_howto_type * |
| 2997 | nios2_elf32_bfd_reloc_name_lookup (bfd *abfd, |
| 2998 | const char *r_name) |
| 2999 | { |
| 3000 | int i; |
| 3001 | reloc_howto_type *howto_tbl; |
| 3002 | int howto_tbl_size; |
| 3003 | |
| 3004 | if (BFD_IS_R2 (abfd)) |
| 3005 | { |
| 3006 | howto_tbl = elf_nios2_r2_howto_table_rel; |
| 3007 | howto_tbl_size = (int) (sizeof (elf_nios2_r2_howto_table_rel) |
| 3008 | / sizeof (elf_nios2_r2_howto_table_rel[0])); |
| 3009 | } |
| 3010 | else |
| 3011 | { |
| 3012 | howto_tbl = elf_nios2_r1_howto_table_rel; |
| 3013 | howto_tbl_size = (int) (sizeof (elf_nios2_r1_howto_table_rel) |
| 3014 | / sizeof (elf_nios2_r1_howto_table_rel[0])); |
| 3015 | } |
| 3016 | |
| 3017 | for (i = 0; i < howto_tbl_size; i++) |
| 3018 | if (howto_tbl[i].name && strcasecmp (howto_tbl[i].name, r_name) == 0) |
| 3019 | return howto_tbl + i; |
| 3020 | return NULL; |
| 3021 | } |
| 3022 | |
| 3023 | /* Implement elf_info_to_howto: |
| 3024 | Given a ELF32 relocation, fill in a arelent structure. */ |
| 3025 | static void |
| 3026 | nios2_elf32_info_to_howto (bfd *abfd, arelent *cache_ptr, |
| 3027 | Elf_Internal_Rela *dst) |
| 3028 | { |
| 3029 | unsigned int r_type; |
| 3030 | |
| 3031 | r_type = ELF32_R_TYPE (dst->r_info); |
| 3032 | cache_ptr->howto = lookup_howto (r_type, abfd); |
| 3033 | } |
| 3034 | |
| 3035 | /* Return the base VMA address which should be subtracted from real addresses |
| 3036 | when resolving @dtpoff relocation. |
| 3037 | This is PT_TLS segment p_vaddr. */ |
| 3038 | static bfd_vma |
| 3039 | dtpoff_base (struct bfd_link_info *info) |
| 3040 | { |
| 3041 | /* If tls_sec is NULL, we should have signalled an error already. */ |
| 3042 | if (elf_hash_table (info)->tls_sec == NULL) |
| 3043 | return 0; |
| 3044 | return elf_hash_table (info)->tls_sec->vma; |
| 3045 | } |
| 3046 | |
| 3047 | /* Return the relocation value for @tpoff relocation |
| 3048 | if STT_TLS virtual address is ADDRESS. */ |
| 3049 | static bfd_vma |
| 3050 | tpoff (struct bfd_link_info *info, bfd_vma address) |
| 3051 | { |
| 3052 | struct elf_link_hash_table *htab = elf_hash_table (info); |
| 3053 | |
| 3054 | /* If tls_sec is NULL, we should have signalled an error already. */ |
| 3055 | if (htab->tls_sec == NULL) |
| 3056 | return 0; |
| 3057 | return address - htab->tls_sec->vma; |
| 3058 | } |
| 3059 | |
| 3060 | /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a |
| 3061 | dangerous relocation. */ |
| 3062 | static bfd_boolean |
| 3063 | nios2_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp, struct bfd_link_info *info) |
| 3064 | { |
| 3065 | |
| 3066 | bfd_boolean gp_found; |
| 3067 | struct bfd_hash_entry *h; |
| 3068 | struct bfd_link_hash_entry *lh; |
| 3069 | |
| 3070 | /* If we've already figured out what GP will be, just return it. */ |
| 3071 | *pgp = _bfd_get_gp_value (output_bfd); |
| 3072 | if (*pgp) |
| 3073 | return TRUE; |
| 3074 | |
| 3075 | h = bfd_hash_lookup (&info->hash->table, "_gp", FALSE, FALSE); |
| 3076 | lh = (struct bfd_link_hash_entry *) h; |
| 3077 | lookup: |
| 3078 | if (lh) |
| 3079 | { |
| 3080 | switch (lh->type) |
| 3081 | { |
| 3082 | case bfd_link_hash_undefined: |
| 3083 | case bfd_link_hash_undefweak: |
| 3084 | case bfd_link_hash_common: |
| 3085 | gp_found = FALSE; |
| 3086 | break; |
| 3087 | case bfd_link_hash_defined: |
| 3088 | case bfd_link_hash_defweak: |
| 3089 | gp_found = TRUE; |
| 3090 | { |
| 3091 | asection *sym_sec = lh->u.def.section; |
| 3092 | bfd_vma sym_value = lh->u.def.value; |
| 3093 | |
| 3094 | if (sym_sec->output_section) |
| 3095 | sym_value = (sym_value + sym_sec->output_offset |
| 3096 | + sym_sec->output_section->vma); |
| 3097 | *pgp = sym_value; |
| 3098 | } |
| 3099 | break; |
| 3100 | case bfd_link_hash_indirect: |
| 3101 | case bfd_link_hash_warning: |
| 3102 | lh = lh->u.i.link; |
| 3103 | /* @@FIXME ignoring warning for now */ |
| 3104 | goto lookup; |
| 3105 | case bfd_link_hash_new: |
| 3106 | default: |
| 3107 | abort (); |
| 3108 | } |
| 3109 | } |
| 3110 | else |
| 3111 | gp_found = FALSE; |
| 3112 | |
| 3113 | if (!gp_found) |
| 3114 | { |
| 3115 | /* Only get the error once. */ |
| 3116 | *pgp = 4; |
| 3117 | _bfd_set_gp_value (output_bfd, *pgp); |
| 3118 | return FALSE; |
| 3119 | } |
| 3120 | |
| 3121 | _bfd_set_gp_value (output_bfd, *pgp); |
| 3122 | |
| 3123 | return TRUE; |
| 3124 | } |
| 3125 | |
| 3126 | /* Retrieve the previously cached _gp pointer, returning bfd_reloc_dangerous |
| 3127 | if it's not available as we don't have a link_info pointer available here |
| 3128 | to look it up in the output symbol table. We don't need to adjust the |
| 3129 | symbol value for an external symbol if we are producing relocatable |
| 3130 | output. */ |
| 3131 | static bfd_reloc_status_type |
| 3132 | nios2_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable, |
| 3133 | char **error_message, bfd_vma *pgp) |
| 3134 | { |
| 3135 | if (bfd_is_und_section (symbol->section) && !relocatable) |
| 3136 | { |
| 3137 | *pgp = 0; |
| 3138 | return bfd_reloc_undefined; |
| 3139 | } |
| 3140 | |
| 3141 | *pgp = _bfd_get_gp_value (output_bfd); |
| 3142 | if (*pgp == 0 && (!relocatable || (symbol->flags & BSF_SECTION_SYM) != 0)) |
| 3143 | { |
| 3144 | if (relocatable) |
| 3145 | { |
| 3146 | /* Make up a value. */ |
| 3147 | *pgp = symbol->section->output_section->vma + 0x4000; |
| 3148 | _bfd_set_gp_value (output_bfd, *pgp); |
| 3149 | } |
| 3150 | else |
| 3151 | { |
| 3152 | *error_message |
| 3153 | = (char *) _("global pointer relative relocation when _gp not defined"); |
| 3154 | return bfd_reloc_dangerous; |
| 3155 | } |
| 3156 | } |
| 3157 | |
| 3158 | return bfd_reloc_ok; |
| 3159 | } |
| 3160 | |
| 3161 | /* Do the relocations that require special handling. */ |
| 3162 | static bfd_reloc_status_type |
| 3163 | nios2_elf32_do_hi16_relocate (bfd *abfd, reloc_howto_type *howto, |
| 3164 | asection *input_section, |
| 3165 | bfd_byte *data, bfd_vma offset, |
| 3166 | bfd_vma symbol_value, bfd_vma addend) |
| 3167 | { |
| 3168 | symbol_value = symbol_value + addend; |
| 3169 | addend = 0; |
| 3170 | symbol_value = (symbol_value >> 16) & 0xffff; |
| 3171 | return _bfd_final_link_relocate (howto, abfd, input_section, |
| 3172 | data, offset, symbol_value, addend); |
| 3173 | } |
| 3174 | |
| 3175 | static bfd_reloc_status_type |
| 3176 | nios2_elf32_do_lo16_relocate (bfd *abfd, reloc_howto_type *howto, |
| 3177 | asection *input_section, |
| 3178 | bfd_byte *data, bfd_vma offset, |
| 3179 | bfd_vma symbol_value, bfd_vma addend) |
| 3180 | { |
| 3181 | symbol_value = symbol_value + addend; |
| 3182 | addend = 0; |
| 3183 | symbol_value = symbol_value & 0xffff; |
| 3184 | return _bfd_final_link_relocate (howto, abfd, input_section, |
| 3185 | data, offset, symbol_value, addend); |
| 3186 | } |
| 3187 | |
| 3188 | static bfd_reloc_status_type |
| 3189 | nios2_elf32_do_hiadj16_relocate (bfd *abfd, reloc_howto_type *howto, |
| 3190 | asection *input_section, |
| 3191 | bfd_byte *data, bfd_vma offset, |
| 3192 | bfd_vma symbol_value, bfd_vma addend) |
| 3193 | { |
| 3194 | symbol_value = symbol_value + addend; |
| 3195 | addend = 0; |
| 3196 | symbol_value = hiadj(symbol_value); |
| 3197 | return _bfd_final_link_relocate (howto, abfd, input_section, data, offset, |
| 3198 | symbol_value, addend); |
| 3199 | } |
| 3200 | |
| 3201 | static bfd_reloc_status_type |
| 3202 | nios2_elf32_do_pcrel_lo16_relocate (bfd *abfd, reloc_howto_type *howto, |
| 3203 | asection *input_section, |
| 3204 | bfd_byte *data, bfd_vma offset, |
| 3205 | bfd_vma symbol_value, bfd_vma addend) |
| 3206 | { |
| 3207 | symbol_value = symbol_value + addend; |
| 3208 | addend = 0; |
| 3209 | symbol_value = symbol_value & 0xffff; |
| 3210 | return _bfd_final_link_relocate (howto, abfd, input_section, |
| 3211 | data, offset, symbol_value, addend); |
| 3212 | } |
| 3213 | |
| 3214 | static bfd_reloc_status_type |
| 3215 | nios2_elf32_do_pcrel_hiadj16_relocate (bfd *abfd, reloc_howto_type *howto, |
| 3216 | asection *input_section, |
| 3217 | bfd_byte *data, bfd_vma offset, |
| 3218 | bfd_vma symbol_value, bfd_vma addend) |
| 3219 | { |
| 3220 | symbol_value = symbol_value + addend; |
| 3221 | symbol_value -= (input_section->output_section->vma |
| 3222 | + input_section->output_offset); |
| 3223 | symbol_value -= offset; |
| 3224 | addend = 0; |
| 3225 | symbol_value = hiadj(symbol_value); |
| 3226 | return _bfd_final_link_relocate (howto, abfd, input_section, data, offset, |
| 3227 | symbol_value, addend); |
| 3228 | } |
| 3229 | |
| 3230 | static bfd_reloc_status_type |
| 3231 | nios2_elf32_do_pcrel16_relocate (bfd *abfd, reloc_howto_type *howto, |
| 3232 | asection *input_section, |
| 3233 | bfd_byte *data, bfd_vma offset, |
| 3234 | bfd_vma symbol_value, bfd_vma addend) |
| 3235 | { |
| 3236 | /* NIOS2 pc relative relocations are relative to the next 32-bit instruction |
| 3237 | so we need to subtract 4 before doing a final_link_relocate. */ |
| 3238 | symbol_value = symbol_value + addend - 4; |
| 3239 | addend = 0; |
| 3240 | return _bfd_final_link_relocate (howto, abfd, input_section, |
| 3241 | data, offset, symbol_value, addend); |
| 3242 | } |
| 3243 | |
| 3244 | static bfd_reloc_status_type |
| 3245 | nios2_elf32_do_call26_relocate (bfd *abfd, reloc_howto_type *howto, |
| 3246 | asection *input_section, |
| 3247 | bfd_byte *data, bfd_vma offset, |
| 3248 | bfd_vma symbol_value, bfd_vma addend) |
| 3249 | { |
| 3250 | /* Check that the relocation is in the same page as the current address. */ |
| 3251 | if (CALL26_SEGMENT (symbol_value + addend) |
| 3252 | != CALL26_SEGMENT (input_section->output_section->vma |
| 3253 | + input_section->output_offset |
| 3254 | + offset)) |
| 3255 | return bfd_reloc_overflow; |
| 3256 | |
| 3257 | /* Check that the target address is correctly aligned on a 4-byte |
| 3258 | boundary. */ |
| 3259 | if ((symbol_value + addend) & 0x3) |
| 3260 | return bfd_reloc_overflow; |
| 3261 | |
| 3262 | return _bfd_final_link_relocate (howto, abfd, input_section, |
| 3263 | data, offset, symbol_value, addend); |
| 3264 | } |
| 3265 | |
| 3266 | static bfd_reloc_status_type |
| 3267 | nios2_elf32_do_gprel_relocate (bfd *abfd, reloc_howto_type *howto, |
| 3268 | asection *input_section, |
| 3269 | bfd_byte *data, bfd_vma offset, |
| 3270 | bfd_vma symbol_value, bfd_vma addend) |
| 3271 | { |
| 3272 | /* Because we need the output_bfd, the special handling is done |
| 3273 | in nios2_elf32_relocate_section or in nios2_elf32_gprel_relocate. */ |
| 3274 | return _bfd_final_link_relocate (howto, abfd, input_section, |
| 3275 | data, offset, symbol_value, addend); |
| 3276 | } |
| 3277 | |
| 3278 | static bfd_reloc_status_type |
| 3279 | nios2_elf32_do_ujmp_relocate (bfd *abfd, reloc_howto_type *howto, |
| 3280 | asection *input_section, |
| 3281 | bfd_byte *data, bfd_vma offset, |
| 3282 | bfd_vma symbol_value, bfd_vma addend) |
| 3283 | { |
| 3284 | bfd_vma symbol_lo16, symbol_hi16; |
| 3285 | bfd_reloc_status_type r; |
| 3286 | symbol_value = symbol_value + addend; |
| 3287 | addend = 0; |
| 3288 | symbol_hi16 = (symbol_value >> 16) & 0xffff; |
| 3289 | symbol_lo16 = symbol_value & 0xffff; |
| 3290 | |
| 3291 | r = _bfd_final_link_relocate (howto, abfd, input_section, |
| 3292 | data, offset, symbol_hi16, addend); |
| 3293 | |
| 3294 | if (r == bfd_reloc_ok) |
| 3295 | return _bfd_final_link_relocate (howto, abfd, input_section, |
| 3296 | data, offset + 4, symbol_lo16, addend); |
| 3297 | |
| 3298 | return r; |
| 3299 | } |
| 3300 | |
| 3301 | static bfd_reloc_status_type |
| 3302 | nios2_elf32_do_cjmp_relocate (bfd *abfd, reloc_howto_type *howto, |
| 3303 | asection *input_section, |
| 3304 | bfd_byte *data, bfd_vma offset, |
| 3305 | bfd_vma symbol_value, bfd_vma addend) |
| 3306 | { |
| 3307 | bfd_vma symbol_lo16, symbol_hi16; |
| 3308 | bfd_reloc_status_type r; |
| 3309 | symbol_value = symbol_value + addend; |
| 3310 | addend = 0; |
| 3311 | symbol_hi16 = (symbol_value >> 16) & 0xffff; |
| 3312 | symbol_lo16 = symbol_value & 0xffff; |
| 3313 | |
| 3314 | r = _bfd_final_link_relocate (howto, abfd, input_section, |
| 3315 | data, offset, symbol_hi16, addend); |
| 3316 | |
| 3317 | if (r == bfd_reloc_ok) |
| 3318 | return _bfd_final_link_relocate (howto, abfd, input_section, |
| 3319 | data, offset + 4, symbol_lo16, addend); |
| 3320 | |
| 3321 | return r; |
| 3322 | } |
| 3323 | |
| 3324 | static bfd_reloc_status_type |
| 3325 | nios2_elf32_do_callr_relocate (bfd *abfd, reloc_howto_type *howto, |
| 3326 | asection *input_section, |
| 3327 | bfd_byte *data, bfd_vma offset, |
| 3328 | bfd_vma symbol_value, bfd_vma addend) |
| 3329 | { |
| 3330 | bfd_vma symbol_lo16, symbol_hi16; |
| 3331 | bfd_reloc_status_type r; |
| 3332 | symbol_value = symbol_value + addend; |
| 3333 | addend = 0; |
| 3334 | symbol_hi16 = (symbol_value >> 16) & 0xffff; |
| 3335 | symbol_lo16 = symbol_value & 0xffff; |
| 3336 | |
| 3337 | r = _bfd_final_link_relocate (howto, abfd, input_section, |
| 3338 | data, offset, symbol_hi16, addend); |
| 3339 | |
| 3340 | if (r == bfd_reloc_ok) |
| 3341 | return _bfd_final_link_relocate (howto, abfd, input_section, |
| 3342 | data, offset + 4, symbol_lo16, addend); |
| 3343 | |
| 3344 | return r; |
| 3345 | } |
| 3346 | |
| 3347 | /* HOWTO handlers for relocations that require special handling. */ |
| 3348 | |
| 3349 | /* This is for relocations used only when relaxing to ensure |
| 3350 | changes in size of section don't screw up .align. */ |
| 3351 | static bfd_reloc_status_type |
| 3352 | nios2_elf32_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, |
| 3353 | asymbol *symbol ATTRIBUTE_UNUSED, |
| 3354 | void *data ATTRIBUTE_UNUSED, asection *input_section, |
| 3355 | bfd *output_bfd, |
| 3356 | char **error_message ATTRIBUTE_UNUSED) |
| 3357 | { |
| 3358 | if (output_bfd != NULL) |
| 3359 | reloc_entry->address += input_section->output_offset; |
| 3360 | return bfd_reloc_ok; |
| 3361 | } |
| 3362 | |
| 3363 | static bfd_reloc_status_type |
| 3364 | nios2_elf32_hi16_relocate (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 3365 | void *data, asection *input_section, |
| 3366 | bfd *output_bfd, |
| 3367 | char **error_message ATTRIBUTE_UNUSED) |
| 3368 | { |
| 3369 | /* This part is from bfd_elf_generic_reloc. */ |
| 3370 | if (output_bfd != NULL |
| 3371 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 3372 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) |
| 3373 | { |
| 3374 | reloc_entry->address += input_section->output_offset; |
| 3375 | return bfd_reloc_ok; |
| 3376 | } |
| 3377 | |
| 3378 | if (output_bfd != NULL) |
| 3379 | /* FIXME: See bfd_perform_relocation. Is this right? */ |
| 3380 | return bfd_reloc_continue; |
| 3381 | |
| 3382 | return nios2_elf32_do_hi16_relocate (abfd, reloc_entry->howto, |
| 3383 | input_section, |
| 3384 | data, reloc_entry->address, |
| 3385 | (symbol->value |
| 3386 | + symbol->section->output_section->vma |
| 3387 | + symbol->section->output_offset), |
| 3388 | reloc_entry->addend); |
| 3389 | } |
| 3390 | |
| 3391 | static bfd_reloc_status_type |
| 3392 | nios2_elf32_lo16_relocate (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 3393 | void *data, asection *input_section, |
| 3394 | bfd *output_bfd, |
| 3395 | char **error_message ATTRIBUTE_UNUSED) |
| 3396 | { |
| 3397 | /* This part is from bfd_elf_generic_reloc. */ |
| 3398 | if (output_bfd != NULL |
| 3399 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 3400 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) |
| 3401 | { |
| 3402 | reloc_entry->address += input_section->output_offset; |
| 3403 | return bfd_reloc_ok; |
| 3404 | } |
| 3405 | |
| 3406 | if (output_bfd != NULL) |
| 3407 | /* FIXME: See bfd_perform_relocation. Is this right? */ |
| 3408 | return bfd_reloc_continue; |
| 3409 | |
| 3410 | return nios2_elf32_do_lo16_relocate (abfd, reloc_entry->howto, |
| 3411 | input_section, |
| 3412 | data, reloc_entry->address, |
| 3413 | (symbol->value |
| 3414 | + symbol->section->output_section->vma |
| 3415 | + symbol->section->output_offset), |
| 3416 | reloc_entry->addend); |
| 3417 | } |
| 3418 | |
| 3419 | static bfd_reloc_status_type |
| 3420 | nios2_elf32_hiadj16_relocate (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 3421 | void *data, asection *input_section, |
| 3422 | bfd *output_bfd, |
| 3423 | char **error_message ATTRIBUTE_UNUSED) |
| 3424 | { |
| 3425 | /* This part is from bfd_elf_generic_reloc. */ |
| 3426 | if (output_bfd != NULL |
| 3427 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 3428 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) |
| 3429 | { |
| 3430 | reloc_entry->address += input_section->output_offset; |
| 3431 | return bfd_reloc_ok; |
| 3432 | } |
| 3433 | |
| 3434 | if (output_bfd != NULL) |
| 3435 | /* FIXME: See bfd_perform_relocation. Is this right? */ |
| 3436 | return bfd_reloc_continue; |
| 3437 | |
| 3438 | return nios2_elf32_do_hiadj16_relocate (abfd, reloc_entry->howto, |
| 3439 | input_section, |
| 3440 | data, reloc_entry->address, |
| 3441 | (symbol->value |
| 3442 | + symbol->section->output_section->vma |
| 3443 | + symbol->section->output_offset), |
| 3444 | reloc_entry->addend); |
| 3445 | } |
| 3446 | |
| 3447 | static bfd_reloc_status_type |
| 3448 | nios2_elf32_pcrel_lo16_relocate (bfd *abfd, arelent *reloc_entry, |
| 3449 | asymbol *symbol, void *data, |
| 3450 | asection *input_section, bfd *output_bfd, |
| 3451 | char **error_message ATTRIBUTE_UNUSED) |
| 3452 | { |
| 3453 | /* This part is from bfd_elf_generic_reloc. */ |
| 3454 | if (output_bfd != NULL |
| 3455 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 3456 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) |
| 3457 | { |
| 3458 | reloc_entry->address += input_section->output_offset; |
| 3459 | return bfd_reloc_ok; |
| 3460 | } |
| 3461 | |
| 3462 | if (output_bfd != NULL) |
| 3463 | /* FIXME: See bfd_perform_relocation. Is this right? */ |
| 3464 | return bfd_reloc_continue; |
| 3465 | |
| 3466 | return nios2_elf32_do_pcrel_lo16_relocate ( |
| 3467 | abfd, reloc_entry->howto, input_section, data, reloc_entry->address, |
| 3468 | (symbol->value + symbol->section->output_section->vma |
| 3469 | + symbol->section->output_offset), |
| 3470 | reloc_entry->addend); |
| 3471 | } |
| 3472 | |
| 3473 | static bfd_reloc_status_type |
| 3474 | nios2_elf32_pcrel_hiadj16_relocate (bfd *abfd, arelent *reloc_entry, |
| 3475 | asymbol *symbol, void *data, |
| 3476 | asection *input_section, bfd *output_bfd, |
| 3477 | char **error_message ATTRIBUTE_UNUSED) |
| 3478 | { |
| 3479 | /* This part is from bfd_elf_generic_reloc. */ |
| 3480 | if (output_bfd != NULL |
| 3481 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 3482 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) |
| 3483 | { |
| 3484 | reloc_entry->address += input_section->output_offset; |
| 3485 | return bfd_reloc_ok; |
| 3486 | } |
| 3487 | |
| 3488 | if (output_bfd != NULL) |
| 3489 | /* FIXME: See bfd_perform_relocation. Is this right? */ |
| 3490 | return bfd_reloc_continue; |
| 3491 | |
| 3492 | return nios2_elf32_do_pcrel_hiadj16_relocate ( |
| 3493 | abfd, reloc_entry->howto, input_section, data, reloc_entry->address, |
| 3494 | (symbol->value + symbol->section->output_section->vma |
| 3495 | + symbol->section->output_offset), |
| 3496 | reloc_entry->addend); |
| 3497 | } |
| 3498 | |
| 3499 | static bfd_reloc_status_type |
| 3500 | nios2_elf32_pcrel16_relocate (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 3501 | void *data, asection *input_section, |
| 3502 | bfd *output_bfd, |
| 3503 | char **error_message ATTRIBUTE_UNUSED) |
| 3504 | { |
| 3505 | /* This part is from bfd_elf_generic_reloc. */ |
| 3506 | if (output_bfd != NULL |
| 3507 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 3508 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) |
| 3509 | { |
| 3510 | reloc_entry->address += input_section->output_offset; |
| 3511 | return bfd_reloc_ok; |
| 3512 | } |
| 3513 | |
| 3514 | if (output_bfd != NULL) |
| 3515 | /* FIXME: See bfd_perform_relocation. Is this right? */ |
| 3516 | return bfd_reloc_continue; |
| 3517 | |
| 3518 | return nios2_elf32_do_pcrel16_relocate (abfd, reloc_entry->howto, |
| 3519 | input_section, |
| 3520 | data, reloc_entry->address, |
| 3521 | (symbol->value |
| 3522 | + symbol->section->output_section->vma |
| 3523 | + symbol->section->output_offset), |
| 3524 | reloc_entry->addend); |
| 3525 | } |
| 3526 | |
| 3527 | static bfd_reloc_status_type |
| 3528 | nios2_elf32_call26_relocate (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 3529 | void *data, asection *input_section, |
| 3530 | bfd *output_bfd, |
| 3531 | char **error_message ATTRIBUTE_UNUSED) |
| 3532 | { |
| 3533 | /* This part is from bfd_elf_generic_reloc. */ |
| 3534 | if (output_bfd != NULL |
| 3535 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 3536 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) |
| 3537 | { |
| 3538 | reloc_entry->address += input_section->output_offset; |
| 3539 | return bfd_reloc_ok; |
| 3540 | } |
| 3541 | |
| 3542 | if (output_bfd != NULL) |
| 3543 | /* FIXME: See bfd_perform_relocation. Is this right? */ |
| 3544 | return bfd_reloc_continue; |
| 3545 | |
| 3546 | return nios2_elf32_do_call26_relocate (abfd, reloc_entry->howto, |
| 3547 | input_section, |
| 3548 | data, reloc_entry->address, |
| 3549 | (symbol->value |
| 3550 | + symbol->section->output_section->vma |
| 3551 | + symbol->section->output_offset), |
| 3552 | reloc_entry->addend); |
| 3553 | } |
| 3554 | |
| 3555 | static bfd_reloc_status_type |
| 3556 | nios2_elf32_gprel_relocate (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 3557 | void *data, asection *input_section, |
| 3558 | bfd *output_bfd, char **msg) |
| 3559 | { |
| 3560 | bfd_vma relocation; |
| 3561 | bfd_vma gp; |
| 3562 | bfd_reloc_status_type r; |
| 3563 | |
| 3564 | |
| 3565 | /* This part is from bfd_elf_generic_reloc. */ |
| 3566 | if (output_bfd != NULL |
| 3567 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 3568 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) |
| 3569 | { |
| 3570 | reloc_entry->address += input_section->output_offset; |
| 3571 | return bfd_reloc_ok; |
| 3572 | } |
| 3573 | |
| 3574 | if (output_bfd != NULL) |
| 3575 | /* FIXME: See bfd_perform_relocation. Is this right? */ |
| 3576 | return bfd_reloc_continue; |
| 3577 | |
| 3578 | relocation = (symbol->value |
| 3579 | + symbol->section->output_section->vma |
| 3580 | + symbol->section->output_offset); |
| 3581 | |
| 3582 | /* This assumes we've already cached the _gp symbol. */ |
| 3583 | r = nios2_elf_final_gp (abfd, symbol, FALSE, msg, &gp); |
| 3584 | if (r == bfd_reloc_ok) |
| 3585 | { |
| 3586 | relocation = relocation + reloc_entry->addend - gp; |
| 3587 | reloc_entry->addend = 0; |
| 3588 | if ((signed) relocation < -32768 || (signed) relocation > 32767) |
| 3589 | { |
| 3590 | *msg = _("global pointer relative address out of range"); |
| 3591 | r = bfd_reloc_outofrange; |
| 3592 | } |
| 3593 | else |
| 3594 | r = nios2_elf32_do_gprel_relocate (abfd, reloc_entry->howto, |
| 3595 | input_section, |
| 3596 | data, reloc_entry->address, |
| 3597 | relocation, reloc_entry->addend); |
| 3598 | } |
| 3599 | |
| 3600 | return r; |
| 3601 | } |
| 3602 | |
| 3603 | static bfd_reloc_status_type |
| 3604 | nios2_elf32_ujmp_relocate (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 3605 | void *data, asection *input_section, |
| 3606 | bfd *output_bfd, char **msg ATTRIBUTE_UNUSED) |
| 3607 | { |
| 3608 | /* This part is from bfd_elf_generic_reloc. */ |
| 3609 | if (output_bfd != NULL |
| 3610 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 3611 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) |
| 3612 | { |
| 3613 | reloc_entry->address += input_section->output_offset; |
| 3614 | return bfd_reloc_ok; |
| 3615 | } |
| 3616 | |
| 3617 | if (output_bfd != NULL) |
| 3618 | /* FIXME: See bfd_perform_relocation. Is this right? */ |
| 3619 | return bfd_reloc_continue; |
| 3620 | |
| 3621 | return nios2_elf32_do_ujmp_relocate (abfd, reloc_entry->howto, |
| 3622 | input_section, |
| 3623 | data, reloc_entry->address, |
| 3624 | (symbol->value |
| 3625 | + symbol->section->output_section->vma |
| 3626 | + symbol->section->output_offset), |
| 3627 | reloc_entry->addend); |
| 3628 | } |
| 3629 | |
| 3630 | static bfd_reloc_status_type |
| 3631 | nios2_elf32_cjmp_relocate (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 3632 | void *data, asection *input_section, |
| 3633 | bfd *output_bfd, char **msg ATTRIBUTE_UNUSED) |
| 3634 | { |
| 3635 | /* This part is from bfd_elf_generic_reloc. */ |
| 3636 | if (output_bfd != NULL |
| 3637 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 3638 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) |
| 3639 | { |
| 3640 | reloc_entry->address += input_section->output_offset; |
| 3641 | return bfd_reloc_ok; |
| 3642 | } |
| 3643 | |
| 3644 | if (output_bfd != NULL) |
| 3645 | /* FIXME: See bfd_perform_relocation. Is this right? */ |
| 3646 | return bfd_reloc_continue; |
| 3647 | |
| 3648 | return nios2_elf32_do_cjmp_relocate (abfd, reloc_entry->howto, |
| 3649 | input_section, |
| 3650 | data, reloc_entry->address, |
| 3651 | (symbol->value |
| 3652 | + symbol->section->output_section->vma |
| 3653 | + symbol->section->output_offset), |
| 3654 | reloc_entry->addend); |
| 3655 | } |
| 3656 | |
| 3657 | static bfd_reloc_status_type |
| 3658 | nios2_elf32_callr_relocate (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 3659 | void *data, asection *input_section, |
| 3660 | bfd *output_bfd, char **msg ATTRIBUTE_UNUSED) |
| 3661 | { |
| 3662 | /* This part is from bfd_elf_generic_reloc. */ |
| 3663 | if (output_bfd != NULL |
| 3664 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 3665 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) |
| 3666 | { |
| 3667 | reloc_entry->address += input_section->output_offset; |
| 3668 | return bfd_reloc_ok; |
| 3669 | } |
| 3670 | |
| 3671 | if (output_bfd != NULL) |
| 3672 | /* FIXME: See bfd_perform_relocation. Is this right? */ |
| 3673 | return bfd_reloc_continue; |
| 3674 | |
| 3675 | return nios2_elf32_do_callr_relocate (abfd, reloc_entry->howto, |
| 3676 | input_section, |
| 3677 | data, reloc_entry->address, |
| 3678 | (symbol->value |
| 3679 | + symbol->section->output_section->vma |
| 3680 | + symbol->section->output_offset), |
| 3681 | reloc_entry->addend); |
| 3682 | } |
| 3683 | |
| 3684 | |
| 3685 | /* Implement elf_backend_relocate_section. */ |
| 3686 | static bfd_boolean |
| 3687 | nios2_elf32_relocate_section (bfd *output_bfd, |
| 3688 | struct bfd_link_info *info, |
| 3689 | bfd *input_bfd, |
| 3690 | asection *input_section, |
| 3691 | bfd_byte *contents, |
| 3692 | Elf_Internal_Rela *relocs, |
| 3693 | Elf_Internal_Sym *local_syms, |
| 3694 | asection **local_sections) |
| 3695 | { |
| 3696 | Elf_Internal_Shdr *symtab_hdr; |
| 3697 | struct elf_link_hash_entry **sym_hashes; |
| 3698 | Elf_Internal_Rela *rel; |
| 3699 | Elf_Internal_Rela *relend; |
| 3700 | struct elf32_nios2_link_hash_table *htab; |
| 3701 | asection *sgot; |
| 3702 | asection *splt; |
| 3703 | asection *sreloc = NULL; |
| 3704 | bfd_vma *local_got_offsets; |
| 3705 | bfd_vma got_base; |
| 3706 | |
| 3707 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 3708 | sym_hashes = elf_sym_hashes (input_bfd); |
| 3709 | relend = relocs + input_section->reloc_count; |
| 3710 | |
| 3711 | htab = elf32_nios2_hash_table (info); |
| 3712 | sgot = htab->root.sgot; |
| 3713 | splt = htab->root.splt; |
| 3714 | local_got_offsets = elf_local_got_offsets (input_bfd); |
| 3715 | |
| 3716 | if (elf32_nios2_hash_table (info)->h_gp_got == NULL) |
| 3717 | got_base = 0; |
| 3718 | else |
| 3719 | got_base = elf32_nios2_hash_table (info)->h_gp_got->root.u.def.value; |
| 3720 | |
| 3721 | for (rel = relocs; rel < relend; rel++) |
| 3722 | { |
| 3723 | reloc_howto_type *howto; |
| 3724 | unsigned long r_symndx; |
| 3725 | Elf_Internal_Sym *sym; |
| 3726 | asection *sec; |
| 3727 | struct elf_link_hash_entry *h; |
| 3728 | struct elf32_nios2_link_hash_entry *eh; |
| 3729 | bfd_vma relocation; |
| 3730 | bfd_vma gp; |
| 3731 | bfd_reloc_status_type r = bfd_reloc_ok; |
| 3732 | const char *name = NULL; |
| 3733 | int r_type; |
| 3734 | const char *format; |
| 3735 | char msgbuf[256]; |
| 3736 | const char* msg = (const char*) NULL; |
| 3737 | bfd_boolean unresolved_reloc; |
| 3738 | bfd_vma off; |
| 3739 | int use_plt; |
| 3740 | |
| 3741 | r_type = ELF32_R_TYPE (rel->r_info); |
| 3742 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 3743 | |
| 3744 | howto = lookup_howto ((unsigned) ELF32_R_TYPE (rel->r_info), output_bfd); |
| 3745 | h = NULL; |
| 3746 | sym = NULL; |
| 3747 | sec = NULL; |
| 3748 | |
| 3749 | if (r_symndx < symtab_hdr->sh_info) |
| 3750 | { |
| 3751 | sym = local_syms + r_symndx; |
| 3752 | sec = local_sections[r_symndx]; |
| 3753 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 3754 | } |
| 3755 | else |
| 3756 | { |
| 3757 | bfd_boolean warned, ignored; |
| 3758 | |
| 3759 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 3760 | r_symndx, symtab_hdr, sym_hashes, |
| 3761 | h, sec, relocation, |
| 3762 | unresolved_reloc, warned, ignored); |
| 3763 | } |
| 3764 | |
| 3765 | if (sec && discarded_section (sec)) |
| 3766 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
| 3767 | rel, 1, relend, howto, 0, contents); |
| 3768 | |
| 3769 | /* Nothing more to do unless this is a final link. */ |
| 3770 | if (bfd_link_relocatable (info)) |
| 3771 | continue; |
| 3772 | |
| 3773 | if (howto) |
| 3774 | { |
| 3775 | switch (howto->type) |
| 3776 | { |
| 3777 | case R_NIOS2_HI16: |
| 3778 | r = nios2_elf32_do_hi16_relocate (input_bfd, howto, |
| 3779 | input_section, |
| 3780 | contents, rel->r_offset, |
| 3781 | relocation, rel->r_addend); |
| 3782 | break; |
| 3783 | case R_NIOS2_LO16: |
| 3784 | r = nios2_elf32_do_lo16_relocate (input_bfd, howto, |
| 3785 | input_section, |
| 3786 | contents, rel->r_offset, |
| 3787 | relocation, rel->r_addend); |
| 3788 | break; |
| 3789 | case R_NIOS2_PCREL_LO: |
| 3790 | r = nios2_elf32_do_pcrel_lo16_relocate (input_bfd, howto, |
| 3791 | input_section, |
| 3792 | contents, |
| 3793 | rel->r_offset, |
| 3794 | relocation, |
| 3795 | rel->r_addend); |
| 3796 | break; |
| 3797 | case R_NIOS2_HIADJ16: |
| 3798 | r = nios2_elf32_do_hiadj16_relocate (input_bfd, howto, |
| 3799 | input_section, contents, |
| 3800 | rel->r_offset, relocation, |
| 3801 | rel->r_addend); |
| 3802 | break; |
| 3803 | case R_NIOS2_PCREL_HA: |
| 3804 | r = nios2_elf32_do_pcrel_hiadj16_relocate (input_bfd, howto, |
| 3805 | input_section, |
| 3806 | contents, |
| 3807 | rel->r_offset, |
| 3808 | relocation, |
| 3809 | rel->r_addend); |
| 3810 | break; |
| 3811 | case R_NIOS2_PCREL16: |
| 3812 | r = nios2_elf32_do_pcrel16_relocate (input_bfd, howto, |
| 3813 | input_section, contents, |
| 3814 | rel->r_offset, relocation, |
| 3815 | rel->r_addend); |
| 3816 | break; |
| 3817 | case R_NIOS2_GPREL: |
| 3818 | /* Turns an absolute address into a gp-relative address. */ |
| 3819 | if (!nios2_elf_assign_gp (output_bfd, &gp, info)) |
| 3820 | { |
| 3821 | bfd_vma reloc_address; |
| 3822 | |
| 3823 | if (sec && sec->output_section) |
| 3824 | reloc_address = (sec->output_section->vma |
| 3825 | + sec->output_offset |
| 3826 | + rel->r_offset); |
| 3827 | else |
| 3828 | reloc_address = 0; |
| 3829 | |
| 3830 | format = _("global pointer relative relocation at address " |
| 3831 | "0x%08x when _gp not defined\n"); |
| 3832 | sprintf (msgbuf, format, reloc_address); |
| 3833 | msg = msgbuf; |
| 3834 | r = bfd_reloc_dangerous; |
| 3835 | } |
| 3836 | else |
| 3837 | { |
| 3838 | bfd_vma symbol_address = rel->r_addend + relocation; |
| 3839 | relocation = symbol_address - gp; |
| 3840 | rel->r_addend = 0; |
| 3841 | if (((signed) relocation < -32768 |
| 3842 | || (signed) relocation > 32767) |
| 3843 | && (!h |
| 3844 | || h->root.type == bfd_link_hash_defined |
| 3845 | || h->root.type == bfd_link_hash_defweak)) |
| 3846 | { |
| 3847 | if (h) |
| 3848 | name = h->root.root.string; |
| 3849 | /* xgettext:c-format */ |
| 3850 | format = _("Unable to reach %s (at 0x%08x) from the " |
| 3851 | "global pointer (at 0x%08x) because the " |
| 3852 | "offset (%d) is out of the allowed range, " |
| 3853 | "-32678 to 32767.\n" ); |
| 3854 | sprintf (msgbuf, format, name, symbol_address, gp, |
| 3855 | (signed)relocation); |
| 3856 | msg = msgbuf; |
| 3857 | r = bfd_reloc_outofrange; |
| 3858 | } |
| 3859 | else |
| 3860 | r = _bfd_final_link_relocate (howto, input_bfd, |
| 3861 | input_section, contents, |
| 3862 | rel->r_offset, relocation, |
| 3863 | rel->r_addend); |
| 3864 | } |
| 3865 | break; |
| 3866 | case R_NIOS2_UJMP: |
| 3867 | r = nios2_elf32_do_ujmp_relocate (input_bfd, howto, |
| 3868 | input_section, |
| 3869 | contents, rel->r_offset, |
| 3870 | relocation, rel->r_addend); |
| 3871 | break; |
| 3872 | case R_NIOS2_CJMP: |
| 3873 | r = nios2_elf32_do_cjmp_relocate (input_bfd, howto, |
| 3874 | input_section, |
| 3875 | contents, rel->r_offset, |
| 3876 | relocation, rel->r_addend); |
| 3877 | break; |
| 3878 | case R_NIOS2_CALLR: |
| 3879 | r = nios2_elf32_do_callr_relocate (input_bfd, howto, |
| 3880 | input_section, contents, |
| 3881 | rel->r_offset, relocation, |
| 3882 | rel->r_addend); |
| 3883 | break; |
| 3884 | case R_NIOS2_CALL26: |
| 3885 | case R_NIOS2_CALL26_NOAT: |
| 3886 | /* If we have a call to an undefined weak symbol, we just want |
| 3887 | to stuff a zero in the bits of the call instruction and |
| 3888 | bypass the normal call26 relocation handling, because it'll |
| 3889 | diagnose an overflow error if address 0 isn't in the same |
| 3890 | 256MB segment as the call site. Presumably the call |
| 3891 | should be guarded by a null check anyway. */ |
| 3892 | if (h != NULL && h->root.type == bfd_link_hash_undefweak) |
| 3893 | { |
| 3894 | BFD_ASSERT (relocation == 0 && rel->r_addend == 0); |
| 3895 | r = _bfd_final_link_relocate (howto, input_bfd, |
| 3896 | input_section, contents, |
| 3897 | rel->r_offset, relocation, |
| 3898 | rel->r_addend); |
| 3899 | break; |
| 3900 | } |
| 3901 | /* Handle relocations which should use the PLT entry. |
| 3902 | NIOS2_BFD_RELOC_32 relocations will use the symbol's value, |
| 3903 | which may point to a PLT entry, but we don't need to handle |
| 3904 | that here. If we created a PLT entry, all branches in this |
| 3905 | object should go to it. */ |
| 3906 | if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) |
| 3907 | { |
| 3908 | /* If we've created a .plt section, and assigned a PLT entry |
| 3909 | to this function, it should not be known to bind locally. |
| 3910 | If it were, we would have cleared the PLT entry. */ |
| 3911 | BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h)); |
| 3912 | |
| 3913 | relocation = (splt->output_section->vma |
| 3914 | + splt->output_offset |
| 3915 | + h->plt.offset); |
| 3916 | |
| 3917 | unresolved_reloc = FALSE; |
| 3918 | } |
| 3919 | /* Detect R_NIOS2_CALL26 relocations that would overflow the |
| 3920 | 256MB segment. Replace the target with a reference to a |
| 3921 | trampoline instead. |
| 3922 | Note that htab->stub_group is null if relaxation has been |
| 3923 | disabled by the --no-relax linker command-line option, so |
| 3924 | we can use that to skip this processing entirely. */ |
| 3925 | if (howto->type == R_NIOS2_CALL26 && htab->stub_group) |
| 3926 | { |
| 3927 | bfd_vma dest = relocation + rel->r_addend; |
| 3928 | enum elf32_nios2_stub_type stub_type; |
| 3929 | |
| 3930 | eh = (struct elf32_nios2_link_hash_entry *)h; |
| 3931 | stub_type = nios2_type_of_stub (input_section, rel, eh, |
| 3932 | htab, dest, NULL); |
| 3933 | |
| 3934 | if (stub_type != nios2_stub_none) |
| 3935 | { |
| 3936 | struct elf32_nios2_stub_hash_entry *hsh; |
| 3937 | |
| 3938 | hsh = nios2_get_stub_entry (input_section, sec, |
| 3939 | eh, rel, htab, stub_type); |
| 3940 | if (hsh == NULL) |
| 3941 | { |
| 3942 | r = bfd_reloc_undefined; |
| 3943 | break; |
| 3944 | } |
| 3945 | |
| 3946 | dest = (hsh->stub_offset |
| 3947 | + hsh->stub_sec->output_offset |
| 3948 | + hsh->stub_sec->output_section->vma); |
| 3949 | r = nios2_elf32_do_call26_relocate (input_bfd, howto, |
| 3950 | input_section, |
| 3951 | contents, |
| 3952 | rel->r_offset, |
| 3953 | dest, 0); |
| 3954 | break; |
| 3955 | } |
| 3956 | } |
| 3957 | |
| 3958 | /* Normal case. */ |
| 3959 | r = nios2_elf32_do_call26_relocate (input_bfd, howto, |
| 3960 | input_section, contents, |
| 3961 | rel->r_offset, relocation, |
| 3962 | rel->r_addend); |
| 3963 | break; |
| 3964 | case R_NIOS2_ALIGN: |
| 3965 | r = bfd_reloc_ok; |
| 3966 | /* For symmetry this would be |
| 3967 | r = nios2_elf32_do_ignore_reloc (input_bfd, howto, |
| 3968 | input_section, contents, |
| 3969 | rel->r_offset, relocation, |
| 3970 | rel->r_addend); |
| 3971 | but do_ignore_reloc would do no more than return |
| 3972 | bfd_reloc_ok. */ |
| 3973 | break; |
| 3974 | |
| 3975 | case R_NIOS2_GOT16: |
| 3976 | case R_NIOS2_CALL16: |
| 3977 | case R_NIOS2_GOT_LO: |
| 3978 | case R_NIOS2_GOT_HA: |
| 3979 | case R_NIOS2_CALL_LO: |
| 3980 | case R_NIOS2_CALL_HA: |
| 3981 | /* Relocation is to the entry for this symbol in the |
| 3982 | global offset table. */ |
| 3983 | if (sgot == NULL) |
| 3984 | { |
| 3985 | r = bfd_reloc_notsupported; |
| 3986 | break; |
| 3987 | } |
| 3988 | |
| 3989 | use_plt = 0; |
| 3990 | |
| 3991 | if (h != NULL) |
| 3992 | { |
| 3993 | bfd_boolean dyn; |
| 3994 | |
| 3995 | eh = (struct elf32_nios2_link_hash_entry *)h; |
| 3996 | use_plt = (eh->got_types_used == CALL_USED |
| 3997 | && h->plt.offset != (bfd_vma) -1); |
| 3998 | |
| 3999 | off = h->got.offset; |
| 4000 | BFD_ASSERT (off != (bfd_vma) -1); |
| 4001 | dyn = elf_hash_table (info)->dynamic_sections_created; |
| 4002 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
| 4003 | bfd_link_pic (info), |
| 4004 | h) |
| 4005 | || (bfd_link_pic (info) |
| 4006 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
| 4007 | || (ELF_ST_VISIBILITY (h->other) |
| 4008 | && h->root.type == bfd_link_hash_undefweak)) |
| 4009 | { |
| 4010 | /* This is actually a static link, or it is a -Bsymbolic |
| 4011 | link and the symbol is defined locally. We must |
| 4012 | initialize this entry in the global offset table. |
| 4013 | Since the offset must always be a multiple of 4, we |
| 4014 | use the least significant bit to record whether we |
| 4015 | have initialized it already. |
| 4016 | |
| 4017 | When doing a dynamic link, we create a .rela.got |
| 4018 | relocation entry to initialize the value. This is |
| 4019 | done in the finish_dynamic_symbol routine. */ |
| 4020 | if ((off & 1) != 0) |
| 4021 | off &= ~1; |
| 4022 | else |
| 4023 | { |
| 4024 | bfd_put_32 (output_bfd, relocation, |
| 4025 | sgot->contents + off); |
| 4026 | h->got.offset |= 1; |
| 4027 | } |
| 4028 | } |
| 4029 | else |
| 4030 | unresolved_reloc = FALSE; |
| 4031 | } |
| 4032 | else |
| 4033 | { |
| 4034 | BFD_ASSERT (local_got_offsets != NULL |
| 4035 | && local_got_offsets[r_symndx] != (bfd_vma) -1); |
| 4036 | |
| 4037 | off = local_got_offsets[r_symndx]; |
| 4038 | |
| 4039 | /* The offset must always be a multiple of 4. We use the |
| 4040 | least significant bit to record whether we have already |
| 4041 | generated the necessary reloc. */ |
| 4042 | if ((off & 1) != 0) |
| 4043 | off &= ~1; |
| 4044 | else |
| 4045 | { |
| 4046 | bfd_put_32 (output_bfd, relocation, |
| 4047 | sgot->contents + off); |
| 4048 | |
| 4049 | if (bfd_link_pic (info)) |
| 4050 | { |
| 4051 | asection *srelgot; |
| 4052 | Elf_Internal_Rela outrel; |
| 4053 | bfd_byte *loc; |
| 4054 | |
| 4055 | srelgot = htab->root.srelgot; |
| 4056 | BFD_ASSERT (srelgot != NULL); |
| 4057 | |
| 4058 | outrel.r_addend = relocation; |
| 4059 | outrel.r_offset = (sgot->output_section->vma |
| 4060 | + sgot->output_offset |
| 4061 | + off); |
| 4062 | outrel.r_info = ELF32_R_INFO (0, R_NIOS2_RELATIVE); |
| 4063 | loc = srelgot->contents; |
| 4064 | loc += (srelgot->reloc_count++ * |
| 4065 | sizeof (Elf32_External_Rela)); |
| 4066 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
| 4067 | } |
| 4068 | |
| 4069 | local_got_offsets[r_symndx] |= 1; |
| 4070 | } |
| 4071 | } |
| 4072 | |
| 4073 | if (use_plt && bfd_link_pic (info)) |
| 4074 | { |
| 4075 | off = ((h->plt.offset - 24) / 12 + 3) * 4; |
| 4076 | relocation = (htab->root.sgotplt->output_offset + off |
| 4077 | - got_base); |
| 4078 | } |
| 4079 | else |
| 4080 | relocation = sgot->output_offset + off - got_base; |
| 4081 | |
| 4082 | /* This relocation does not use the addend. */ |
| 4083 | rel->r_addend = 0; |
| 4084 | |
| 4085 | switch (howto->type) |
| 4086 | { |
| 4087 | case R_NIOS2_GOT_LO: |
| 4088 | case R_NIOS2_CALL_LO: |
| 4089 | r = nios2_elf32_do_lo16_relocate (input_bfd, howto, |
| 4090 | input_section, contents, |
| 4091 | rel->r_offset, relocation, |
| 4092 | rel->r_addend); |
| 4093 | break; |
| 4094 | case R_NIOS2_GOT_HA: |
| 4095 | case R_NIOS2_CALL_HA: |
| 4096 | r = nios2_elf32_do_hiadj16_relocate (input_bfd, howto, |
| 4097 | input_section, contents, |
| 4098 | rel->r_offset, |
| 4099 | relocation, |
| 4100 | rel->r_addend); |
| 4101 | break; |
| 4102 | default: |
| 4103 | r = _bfd_final_link_relocate (howto, input_bfd, |
| 4104 | input_section, contents, |
| 4105 | rel->r_offset, relocation, |
| 4106 | rel->r_addend); |
| 4107 | break; |
| 4108 | } |
| 4109 | break; |
| 4110 | |
| 4111 | case R_NIOS2_GOTOFF_LO: |
| 4112 | case R_NIOS2_GOTOFF_HA: |
| 4113 | case R_NIOS2_GOTOFF: |
| 4114 | /* Relocation is relative to the global offset table pointer. */ |
| 4115 | |
| 4116 | BFD_ASSERT (sgot != NULL); |
| 4117 | if (sgot == NULL) |
| 4118 | { |
| 4119 | r = bfd_reloc_notsupported; |
| 4120 | break; |
| 4121 | } |
| 4122 | |
| 4123 | /* Note that sgot->output_offset is not involved in this |
| 4124 | calculation. We always want the start of .got. */ |
| 4125 | relocation -= sgot->output_section->vma; |
| 4126 | |
| 4127 | /* Now we adjust the relocation to be relative to the GOT pointer |
| 4128 | (the _gp_got symbol), which possibly contains the 0x8000 bias. */ |
| 4129 | relocation -= got_base; |
| 4130 | |
| 4131 | switch (howto->type) |
| 4132 | { |
| 4133 | case R_NIOS2_GOTOFF_LO: |
| 4134 | r = nios2_elf32_do_lo16_relocate (input_bfd, howto, |
| 4135 | input_section, contents, |
| 4136 | rel->r_offset, relocation, |
| 4137 | rel->r_addend); |
| 4138 | break; |
| 4139 | case R_NIOS2_GOTOFF_HA: |
| 4140 | r = nios2_elf32_do_hiadj16_relocate (input_bfd, howto, |
| 4141 | input_section, contents, |
| 4142 | rel->r_offset, |
| 4143 | relocation, |
| 4144 | rel->r_addend); |
| 4145 | break; |
| 4146 | default: |
| 4147 | r = _bfd_final_link_relocate (howto, input_bfd, |
| 4148 | input_section, contents, |
| 4149 | rel->r_offset, relocation, |
| 4150 | rel->r_addend); |
| 4151 | break; |
| 4152 | } |
| 4153 | break; |
| 4154 | |
| 4155 | case R_NIOS2_TLS_LDO16: |
| 4156 | relocation -= dtpoff_base (info) + DTP_OFFSET; |
| 4157 | |
| 4158 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 4159 | contents, rel->r_offset, |
| 4160 | relocation, rel->r_addend); |
| 4161 | break; |
| 4162 | case R_NIOS2_TLS_LDM16: |
| 4163 | if (htab->root.sgot == NULL) |
| 4164 | abort (); |
| 4165 | |
| 4166 | off = htab->tls_ldm_got.offset; |
| 4167 | |
| 4168 | if ((off & 1) != 0) |
| 4169 | off &= ~1; |
| 4170 | else |
| 4171 | { |
| 4172 | /* If we don't know the module number, create a relocation |
| 4173 | for it. */ |
| 4174 | if (bfd_link_pic (info)) |
| 4175 | { |
| 4176 | Elf_Internal_Rela outrel; |
| 4177 | bfd_byte *loc; |
| 4178 | |
| 4179 | if (htab->root.srelgot == NULL) |
| 4180 | abort (); |
| 4181 | |
| 4182 | outrel.r_addend = 0; |
| 4183 | outrel.r_offset = (htab->root.sgot->output_section->vma |
| 4184 | + htab->root.sgot->output_offset |
| 4185 | + off); |
| 4186 | outrel.r_info = ELF32_R_INFO (0, R_NIOS2_TLS_DTPMOD); |
| 4187 | |
| 4188 | loc = htab->root.srelgot->contents; |
| 4189 | loc += (htab->root.srelgot->reloc_count++ |
| 4190 | * sizeof (Elf32_External_Rela)); |
| 4191 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
| 4192 | } |
| 4193 | else |
| 4194 | bfd_put_32 (output_bfd, 1, |
| 4195 | htab->root.sgot->contents + off); |
| 4196 | |
| 4197 | htab->tls_ldm_got.offset |= 1; |
| 4198 | } |
| 4199 | |
| 4200 | relocation = htab->root.sgot->output_offset + off - got_base; |
| 4201 | |
| 4202 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 4203 | contents, rel->r_offset, |
| 4204 | relocation, rel->r_addend); |
| 4205 | |
| 4206 | break; |
| 4207 | case R_NIOS2_TLS_GD16: |
| 4208 | case R_NIOS2_TLS_IE16: |
| 4209 | { |
| 4210 | int indx; |
| 4211 | char tls_type; |
| 4212 | |
| 4213 | if (htab->root.sgot == NULL) |
| 4214 | abort (); |
| 4215 | |
| 4216 | indx = 0; |
| 4217 | if (h != NULL) |
| 4218 | { |
| 4219 | bfd_boolean dyn; |
| 4220 | dyn = htab->root.dynamic_sections_created; |
| 4221 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
| 4222 | bfd_link_pic (info), |
| 4223 | h) |
| 4224 | && (!bfd_link_pic (info) |
| 4225 | || !SYMBOL_REFERENCES_LOCAL (info, h))) |
| 4226 | { |
| 4227 | unresolved_reloc = FALSE; |
| 4228 | indx = h->dynindx; |
| 4229 | } |
| 4230 | off = h->got.offset; |
| 4231 | tls_type = (((struct elf32_nios2_link_hash_entry *) h) |
| 4232 | ->tls_type); |
| 4233 | } |
| 4234 | else |
| 4235 | { |
| 4236 | if (local_got_offsets == NULL) |
| 4237 | abort (); |
| 4238 | off = local_got_offsets[r_symndx]; |
| 4239 | tls_type = (elf32_nios2_local_got_tls_type (input_bfd) |
| 4240 | [r_symndx]); |
| 4241 | } |
| 4242 | |
| 4243 | if (tls_type == GOT_UNKNOWN) |
| 4244 | abort (); |
| 4245 | |
| 4246 | if ((off & 1) != 0) |
| 4247 | off &= ~1; |
| 4248 | else |
| 4249 | { |
| 4250 | bfd_boolean need_relocs = FALSE; |
| 4251 | Elf_Internal_Rela outrel; |
| 4252 | bfd_byte *loc = NULL; |
| 4253 | int cur_off = off; |
| 4254 | |
| 4255 | /* The GOT entries have not been initialized yet. Do it |
| 4256 | now, and emit any relocations. If both an IE GOT and a |
| 4257 | GD GOT are necessary, we emit the GD first. */ |
| 4258 | |
| 4259 | if ((bfd_link_pic (info) || indx != 0) |
| 4260 | && (h == NULL |
| 4261 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
| 4262 | || h->root.type != bfd_link_hash_undefweak)) |
| 4263 | { |
| 4264 | need_relocs = TRUE; |
| 4265 | if (htab->root.srelgot == NULL) |
| 4266 | abort (); |
| 4267 | loc = htab->root.srelgot->contents; |
| 4268 | loc += (htab->root.srelgot->reloc_count * |
| 4269 | sizeof (Elf32_External_Rela)); |
| 4270 | } |
| 4271 | |
| 4272 | if (tls_type & GOT_TLS_GD) |
| 4273 | { |
| 4274 | if (need_relocs) |
| 4275 | { |
| 4276 | outrel.r_addend = 0; |
| 4277 | outrel.r_offset = (htab->root.sgot->output_section->vma |
| 4278 | + htab->root.sgot->output_offset |
| 4279 | + cur_off); |
| 4280 | outrel.r_info = ELF32_R_INFO (indx, |
| 4281 | R_NIOS2_TLS_DTPMOD); |
| 4282 | |
| 4283 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
| 4284 | loc); |
| 4285 | htab->root.srelgot->reloc_count++; |
| 4286 | loc += sizeof (Elf32_External_Rela); |
| 4287 | |
| 4288 | if (indx == 0) |
| 4289 | bfd_put_32 (output_bfd, |
| 4290 | (relocation - dtpoff_base (info) - |
| 4291 | DTP_OFFSET), |
| 4292 | htab->root.sgot->contents + cur_off + 4); |
| 4293 | else |
| 4294 | { |
| 4295 | outrel.r_addend = 0; |
| 4296 | outrel.r_info = ELF32_R_INFO (indx, |
| 4297 | R_NIOS2_TLS_DTPREL); |
| 4298 | outrel.r_offset += 4; |
| 4299 | |
| 4300 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
| 4301 | loc); |
| 4302 | htab->root.srelgot->reloc_count++; |
| 4303 | loc += sizeof (Elf32_External_Rela); |
| 4304 | } |
| 4305 | } |
| 4306 | else |
| 4307 | { |
| 4308 | /* If we are not emitting relocations for a |
| 4309 | general dynamic reference, then we must be in a |
| 4310 | static link or an executable link with the |
| 4311 | symbol binding locally. Mark it as belonging |
| 4312 | to module 1, the executable. */ |
| 4313 | bfd_put_32 (output_bfd, 1, |
| 4314 | htab->root.sgot->contents + cur_off); |
| 4315 | bfd_put_32 (output_bfd, (relocation - |
| 4316 | dtpoff_base (info) - |
| 4317 | DTP_OFFSET), |
| 4318 | htab->root.sgot->contents + cur_off + 4); |
| 4319 | } |
| 4320 | |
| 4321 | cur_off += 8; |
| 4322 | } |
| 4323 | |
| 4324 | if (tls_type & GOT_TLS_IE) |
| 4325 | { |
| 4326 | if (need_relocs) |
| 4327 | { |
| 4328 | if (indx == 0) |
| 4329 | outrel.r_addend = (relocation - |
| 4330 | dtpoff_base (info)); |
| 4331 | else |
| 4332 | outrel.r_addend = 0; |
| 4333 | outrel.r_offset = (htab->root.sgot->output_section->vma |
| 4334 | + htab->root.sgot->output_offset |
| 4335 | + cur_off); |
| 4336 | outrel.r_info = ELF32_R_INFO (indx, |
| 4337 | R_NIOS2_TLS_TPREL); |
| 4338 | |
| 4339 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
| 4340 | loc); |
| 4341 | htab->root.srelgot->reloc_count++; |
| 4342 | loc += sizeof (Elf32_External_Rela); |
| 4343 | } |
| 4344 | else |
| 4345 | bfd_put_32 (output_bfd, (tpoff (info, relocation) |
| 4346 | - TP_OFFSET), |
| 4347 | htab->root.sgot->contents + cur_off); |
| 4348 | cur_off += 4; |
| 4349 | } |
| 4350 | |
| 4351 | if (h != NULL) |
| 4352 | h->got.offset |= 1; |
| 4353 | else |
| 4354 | local_got_offsets[r_symndx] |= 1; |
| 4355 | } |
| 4356 | |
| 4357 | if ((tls_type & GOT_TLS_GD) && r_type != R_NIOS2_TLS_GD16) |
| 4358 | off += 8; |
| 4359 | relocation = htab->root.sgot->output_offset + off - got_base; |
| 4360 | |
| 4361 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 4362 | contents, rel->r_offset, |
| 4363 | relocation, rel->r_addend); |
| 4364 | } |
| 4365 | |
| 4366 | break; |
| 4367 | case R_NIOS2_TLS_LE16: |
| 4368 | if (bfd_link_dll (info)) |
| 4369 | { |
| 4370 | _bfd_error_handler |
| 4371 | /* xgettext:c-format */ |
| 4372 | (_("%B(%A+0x%lx): R_NIOS2_TLS_LE16 relocation not " |
| 4373 | "permitted in shared object"), |
| 4374 | input_bfd, input_section, |
| 4375 | (long) rel->r_offset, howto->name); |
| 4376 | return FALSE; |
| 4377 | } |
| 4378 | else |
| 4379 | relocation = tpoff (info, relocation) - TP_OFFSET; |
| 4380 | |
| 4381 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 4382 | contents, rel->r_offset, |
| 4383 | relocation, rel->r_addend); |
| 4384 | break; |
| 4385 | |
| 4386 | case R_NIOS2_BFD_RELOC_32: |
| 4387 | if (bfd_link_pic (info) |
| 4388 | && (input_section->flags & SEC_ALLOC) != 0 |
| 4389 | && (h == NULL |
| 4390 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
| 4391 | || h->root.type != bfd_link_hash_undefweak)) |
| 4392 | { |
| 4393 | Elf_Internal_Rela outrel; |
| 4394 | bfd_byte *loc; |
| 4395 | bfd_boolean skip, relocate; |
| 4396 | |
| 4397 | /* When generating a shared object, these relocations |
| 4398 | are copied into the output file to be resolved at run |
| 4399 | time. */ |
| 4400 | |
| 4401 | skip = FALSE; |
| 4402 | relocate = FALSE; |
| 4403 | |
| 4404 | outrel.r_offset |
| 4405 | = _bfd_elf_section_offset (output_bfd, info, |
| 4406 | input_section, rel->r_offset); |
| 4407 | if (outrel.r_offset == (bfd_vma) -1) |
| 4408 | skip = TRUE; |
| 4409 | else if (outrel.r_offset == (bfd_vma) -2) |
| 4410 | skip = TRUE, relocate = TRUE; |
| 4411 | outrel.r_offset += (input_section->output_section->vma |
| 4412 | + input_section->output_offset); |
| 4413 | |
| 4414 | if (skip) |
| 4415 | memset (&outrel, 0, sizeof outrel); |
| 4416 | else if (h != NULL |
| 4417 | && h->dynindx != -1 |
| 4418 | && (!bfd_link_pic (info) |
| 4419 | || !SYMBOLIC_BIND (info, h) |
| 4420 | || !h->def_regular)) |
| 4421 | { |
| 4422 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
| 4423 | outrel.r_addend = rel->r_addend; |
| 4424 | } |
| 4425 | else |
| 4426 | { |
| 4427 | /* This symbol is local, or marked to become local. */ |
| 4428 | outrel.r_addend = relocation + rel->r_addend; |
| 4429 | relocate = TRUE; |
| 4430 | outrel.r_info = ELF32_R_INFO (0, R_NIOS2_RELATIVE); |
| 4431 | } |
| 4432 | |
| 4433 | sreloc = elf_section_data (input_section)->sreloc; |
| 4434 | if (sreloc == NULL) |
| 4435 | abort (); |
| 4436 | |
| 4437 | loc = sreloc->contents; |
| 4438 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); |
| 4439 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
| 4440 | |
| 4441 | /* This reloc will be computed at runtime, so there's no |
| 4442 | need to do anything now, except for R_NIOS2_BFD_RELOC_32 |
| 4443 | relocations that have been turned into |
| 4444 | R_NIOS2_RELATIVE. */ |
| 4445 | if (!relocate) |
| 4446 | break; |
| 4447 | } |
| 4448 | |
| 4449 | r = _bfd_final_link_relocate (howto, input_bfd, |
| 4450 | input_section, contents, |
| 4451 | rel->r_offset, relocation, |
| 4452 | rel->r_addend); |
| 4453 | break; |
| 4454 | |
| 4455 | case R_NIOS2_TLS_DTPREL: |
| 4456 | relocation -= dtpoff_base (info); |
| 4457 | /* Fall through. */ |
| 4458 | |
| 4459 | default: |
| 4460 | r = _bfd_final_link_relocate (howto, input_bfd, |
| 4461 | input_section, contents, |
| 4462 | rel->r_offset, relocation, |
| 4463 | rel->r_addend); |
| 4464 | break; |
| 4465 | } |
| 4466 | } |
| 4467 | else |
| 4468 | r = bfd_reloc_notsupported; |
| 4469 | |
| 4470 | if (r != bfd_reloc_ok) |
| 4471 | { |
| 4472 | if (h != NULL) |
| 4473 | name = h->root.root.string; |
| 4474 | else |
| 4475 | { |
| 4476 | name = bfd_elf_string_from_elf_section (input_bfd, |
| 4477 | symtab_hdr->sh_link, |
| 4478 | sym->st_name); |
| 4479 | if (name == NULL || *name == '\0') |
| 4480 | name = bfd_section_name (input_bfd, sec); |
| 4481 | } |
| 4482 | |
| 4483 | switch (r) |
| 4484 | { |
| 4485 | case bfd_reloc_overflow: |
| 4486 | (*info->callbacks->reloc_overflow) (info, NULL, name, |
| 4487 | howto->name, (bfd_vma) 0, |
| 4488 | input_bfd, input_section, |
| 4489 | rel->r_offset); |
| 4490 | break; |
| 4491 | |
| 4492 | case bfd_reloc_undefined: |
| 4493 | (*info->callbacks->undefined_symbol) (info, name, input_bfd, |
| 4494 | input_section, |
| 4495 | rel->r_offset, TRUE); |
| 4496 | break; |
| 4497 | |
| 4498 | case bfd_reloc_outofrange: |
| 4499 | if (msg == NULL) |
| 4500 | msg = _("relocation out of range"); |
| 4501 | break; |
| 4502 | |
| 4503 | case bfd_reloc_notsupported: |
| 4504 | if (msg == NULL) |
| 4505 | msg = _("unsupported relocation"); |
| 4506 | break; |
| 4507 | |
| 4508 | case bfd_reloc_dangerous: |
| 4509 | if (msg == NULL) |
| 4510 | msg = _("dangerous relocation"); |
| 4511 | break; |
| 4512 | |
| 4513 | default: |
| 4514 | if (msg == NULL) |
| 4515 | msg = _("unknown error"); |
| 4516 | break; |
| 4517 | } |
| 4518 | |
| 4519 | if (msg) |
| 4520 | { |
| 4521 | (*info->callbacks->warning) (info, msg, name, input_bfd, |
| 4522 | input_section, rel->r_offset); |
| 4523 | return FALSE; |
| 4524 | } |
| 4525 | } |
| 4526 | } |
| 4527 | return TRUE; |
| 4528 | } |
| 4529 | |
| 4530 | /* Implement elf-backend_section_flags: |
| 4531 | Convert NIOS2 specific section flags to bfd internal section flags. */ |
| 4532 | static bfd_boolean |
| 4533 | nios2_elf32_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr) |
| 4534 | { |
| 4535 | if (hdr->sh_flags & SHF_NIOS2_GPREL) |
| 4536 | *flags |= SEC_SMALL_DATA; |
| 4537 | |
| 4538 | return TRUE; |
| 4539 | } |
| 4540 | |
| 4541 | /* Implement elf_backend_fake_sections: |
| 4542 | Set the correct type for an NIOS2 ELF section. We do this by the |
| 4543 | section name, which is a hack, but ought to work. */ |
| 4544 | static bfd_boolean |
| 4545 | nios2_elf32_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, |
| 4546 | Elf_Internal_Shdr *hdr, asection *sec) |
| 4547 | { |
| 4548 | register const char *name = bfd_get_section_name (abfd, sec); |
| 4549 | |
| 4550 | if ((sec->flags & SEC_SMALL_DATA) |
| 4551 | || strcmp (name, ".sdata") == 0 |
| 4552 | || strcmp (name, ".sbss") == 0 |
| 4553 | || strcmp (name, ".lit4") == 0 || strcmp (name, ".lit8") == 0) |
| 4554 | hdr->sh_flags |= SHF_NIOS2_GPREL; |
| 4555 | |
| 4556 | return TRUE; |
| 4557 | } |
| 4558 | |
| 4559 | /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up |
| 4560 | shortcuts to them in our hash table. */ |
| 4561 | static bfd_boolean |
| 4562 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
| 4563 | { |
| 4564 | struct elf32_nios2_link_hash_table *htab; |
| 4565 | struct elf_link_hash_entry *h; |
| 4566 | |
| 4567 | htab = elf32_nios2_hash_table (info); |
| 4568 | |
| 4569 | if (! _bfd_elf_create_got_section (dynobj, info)) |
| 4570 | return FALSE; |
| 4571 | |
| 4572 | /* In order for the two loads in .PLTresolve to share the same %hiadj, |
| 4573 | _GLOBAL_OFFSET_TABLE_ must be aligned to a 16-byte boundary. */ |
| 4574 | if (!bfd_set_section_alignment (dynobj, htab->root.sgotplt, 4)) |
| 4575 | return FALSE; |
| 4576 | |
| 4577 | /* The Nios II ABI specifies that GOT-relative relocations are relative |
| 4578 | to the linker-created symbol _gp_got, rather than using |
| 4579 | _GLOBAL_OFFSET_TABLE_ directly. In particular, the latter always |
| 4580 | points to the base of the GOT while _gp_got may include a bias. */ |
| 4581 | h = _bfd_elf_define_linkage_sym (dynobj, info, htab->root.sgotplt, |
| 4582 | "_gp_got"); |
| 4583 | elf32_nios2_hash_table (info)->h_gp_got = h; |
| 4584 | if (h == NULL) |
| 4585 | return FALSE; |
| 4586 | |
| 4587 | return TRUE; |
| 4588 | } |
| 4589 | |
| 4590 | /* Implement elf_backend_create_dynamic_sections: |
| 4591 | Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and |
| 4592 | .rela.bss sections in DYNOBJ, and set up shortcuts to them in our |
| 4593 | hash table. */ |
| 4594 | static bfd_boolean |
| 4595 | nios2_elf32_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
| 4596 | { |
| 4597 | struct elf32_nios2_link_hash_table *htab; |
| 4598 | |
| 4599 | htab = elf32_nios2_hash_table (info); |
| 4600 | if (!htab->root.sgot && !create_got_section (dynobj, info)) |
| 4601 | return FALSE; |
| 4602 | |
| 4603 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
| 4604 | return FALSE; |
| 4605 | |
| 4606 | /* In order for the two loads in a shared object .PLTresolve to share the |
| 4607 | same %hiadj, the start of the PLT (as well as the GOT) must be aligned |
| 4608 | to a 16-byte boundary. This is because the addresses for these loads |
| 4609 | include the -(.plt+4) PIC correction. */ |
| 4610 | return bfd_set_section_alignment (dynobj, htab->root.splt, 4); |
| 4611 | } |
| 4612 | |
| 4613 | /* Implement elf_backend_copy_indirect_symbol: |
| 4614 | Copy the extra info we tack onto an elf_link_hash_entry. */ |
| 4615 | static void |
| 4616 | nios2_elf32_copy_indirect_symbol (struct bfd_link_info *info, |
| 4617 | struct elf_link_hash_entry *dir, |
| 4618 | struct elf_link_hash_entry *ind) |
| 4619 | { |
| 4620 | struct elf32_nios2_link_hash_entry *edir, *eind; |
| 4621 | |
| 4622 | edir = (struct elf32_nios2_link_hash_entry *) dir; |
| 4623 | eind = (struct elf32_nios2_link_hash_entry *) ind; |
| 4624 | |
| 4625 | if (eind->dyn_relocs != NULL) |
| 4626 | { |
| 4627 | if (edir->dyn_relocs != NULL) |
| 4628 | { |
| 4629 | struct elf32_nios2_dyn_relocs **pp; |
| 4630 | struct elf32_nios2_dyn_relocs *p; |
| 4631 | |
| 4632 | /* Add reloc counts against the indirect sym to the direct sym |
| 4633 | list. Merge any entries against the same section. */ |
| 4634 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) |
| 4635 | { |
| 4636 | struct elf32_nios2_dyn_relocs *q; |
| 4637 | |
| 4638 | for (q = edir->dyn_relocs; q != NULL; q = q->next) |
| 4639 | if (q->sec == p->sec) |
| 4640 | { |
| 4641 | q->pc_count += p->pc_count; |
| 4642 | q->count += p->count; |
| 4643 | *pp = p->next; |
| 4644 | break; |
| 4645 | } |
| 4646 | if (q == NULL) |
| 4647 | pp = &p->next; |
| 4648 | } |
| 4649 | *pp = edir->dyn_relocs; |
| 4650 | } |
| 4651 | |
| 4652 | edir->dyn_relocs = eind->dyn_relocs; |
| 4653 | eind->dyn_relocs = NULL; |
| 4654 | } |
| 4655 | |
| 4656 | if (ind->root.type == bfd_link_hash_indirect |
| 4657 | && dir->got.refcount <= 0) |
| 4658 | { |
| 4659 | edir->tls_type = eind->tls_type; |
| 4660 | eind->tls_type = GOT_UNKNOWN; |
| 4661 | } |
| 4662 | |
| 4663 | edir->got_types_used |= eind->got_types_used; |
| 4664 | |
| 4665 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
| 4666 | } |
| 4667 | |
| 4668 | /* Set the right machine number for a NIOS2 ELF file. */ |
| 4669 | |
| 4670 | static bfd_boolean |
| 4671 | nios2_elf32_object_p (bfd *abfd) |
| 4672 | { |
| 4673 | unsigned long mach; |
| 4674 | |
| 4675 | mach = elf_elfheader (abfd)->e_flags; |
| 4676 | |
| 4677 | switch (mach) |
| 4678 | { |
| 4679 | default: |
| 4680 | case EF_NIOS2_ARCH_R1: |
| 4681 | bfd_default_set_arch_mach (abfd, bfd_arch_nios2, bfd_mach_nios2r1); |
| 4682 | break; |
| 4683 | case EF_NIOS2_ARCH_R2: |
| 4684 | bfd_default_set_arch_mach (abfd, bfd_arch_nios2, bfd_mach_nios2r2); |
| 4685 | break; |
| 4686 | } |
| 4687 | |
| 4688 | return TRUE; |
| 4689 | } |
| 4690 | |
| 4691 | /* Implement elf_backend_check_relocs: |
| 4692 | Look through the relocs for a section during the first phase. */ |
| 4693 | static bfd_boolean |
| 4694 | nios2_elf32_check_relocs (bfd *abfd, struct bfd_link_info *info, |
| 4695 | asection *sec, const Elf_Internal_Rela *relocs) |
| 4696 | { |
| 4697 | bfd *dynobj; |
| 4698 | Elf_Internal_Shdr *symtab_hdr; |
| 4699 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; |
| 4700 | const Elf_Internal_Rela *rel; |
| 4701 | const Elf_Internal_Rela *rel_end; |
| 4702 | struct elf32_nios2_link_hash_table *htab; |
| 4703 | asection *sgot; |
| 4704 | asection *srelgot; |
| 4705 | asection *sreloc = NULL; |
| 4706 | bfd_signed_vma *local_got_refcounts; |
| 4707 | |
| 4708 | if (bfd_link_relocatable (info)) |
| 4709 | return TRUE; |
| 4710 | |
| 4711 | dynobj = elf_hash_table (info)->dynobj; |
| 4712 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 4713 | sym_hashes = elf_sym_hashes (abfd); |
| 4714 | sym_hashes_end = (sym_hashes |
| 4715 | + symtab_hdr->sh_size / sizeof (Elf32_External_Sym)); |
| 4716 | if (!elf_bad_symtab (abfd)) |
| 4717 | sym_hashes_end -= symtab_hdr->sh_info; |
| 4718 | local_got_refcounts = elf_local_got_refcounts (abfd); |
| 4719 | |
| 4720 | htab = elf32_nios2_hash_table (info); |
| 4721 | sgot = htab->root.sgot; |
| 4722 | srelgot = htab->root.srelgot; |
| 4723 | |
| 4724 | rel_end = relocs + sec->reloc_count; |
| 4725 | for (rel = relocs; rel < rel_end; rel++) |
| 4726 | { |
| 4727 | unsigned int r_type; |
| 4728 | struct elf_link_hash_entry *h; |
| 4729 | unsigned long r_symndx; |
| 4730 | |
| 4731 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 4732 | if (r_symndx < symtab_hdr->sh_info) |
| 4733 | h = NULL; |
| 4734 | else |
| 4735 | { |
| 4736 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 4737 | while (h->root.type == bfd_link_hash_indirect |
| 4738 | || h->root.type == bfd_link_hash_warning) |
| 4739 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 4740 | |
| 4741 | /* PR15323, ref flags aren't set for references in the same |
| 4742 | object. */ |
| 4743 | h->root.non_ir_ref = 1; |
| 4744 | } |
| 4745 | |
| 4746 | r_type = ELF32_R_TYPE (rel->r_info); |
| 4747 | |
| 4748 | switch (r_type) |
| 4749 | { |
| 4750 | case R_NIOS2_GOT16: |
| 4751 | case R_NIOS2_GOT_LO: |
| 4752 | case R_NIOS2_GOT_HA: |
| 4753 | case R_NIOS2_CALL16: |
| 4754 | case R_NIOS2_CALL_LO: |
| 4755 | case R_NIOS2_CALL_HA: |
| 4756 | case R_NIOS2_TLS_GD16: |
| 4757 | case R_NIOS2_TLS_IE16: |
| 4758 | /* This symbol requires a global offset table entry. */ |
| 4759 | { |
| 4760 | int tls_type, old_tls_type; |
| 4761 | |
| 4762 | switch (r_type) |
| 4763 | { |
| 4764 | default: |
| 4765 | case R_NIOS2_GOT16: |
| 4766 | case R_NIOS2_GOT_LO: |
| 4767 | case R_NIOS2_GOT_HA: |
| 4768 | case R_NIOS2_CALL16: |
| 4769 | case R_NIOS2_CALL_LO: |
| 4770 | case R_NIOS2_CALL_HA: |
| 4771 | tls_type = GOT_NORMAL; |
| 4772 | break; |
| 4773 | case R_NIOS2_TLS_GD16: |
| 4774 | tls_type = GOT_TLS_GD; |
| 4775 | break; |
| 4776 | case R_NIOS2_TLS_IE16: |
| 4777 | tls_type = GOT_TLS_IE; |
| 4778 | break; |
| 4779 | } |
| 4780 | |
| 4781 | if (dynobj == NULL) |
| 4782 | { |
| 4783 | /* Create the .got section. */ |
| 4784 | elf_hash_table (info)->dynobj = dynobj = abfd; |
| 4785 | nios2_elf32_create_dynamic_sections (dynobj, info); |
| 4786 | } |
| 4787 | |
| 4788 | if (sgot == NULL) |
| 4789 | { |
| 4790 | sgot = htab->root.sgot; |
| 4791 | BFD_ASSERT (sgot != NULL); |
| 4792 | } |
| 4793 | |
| 4794 | if (srelgot == NULL |
| 4795 | && (h != NULL || bfd_link_pic (info))) |
| 4796 | { |
| 4797 | srelgot = htab->root.srelgot; |
| 4798 | BFD_ASSERT (srelgot != NULL); |
| 4799 | } |
| 4800 | |
| 4801 | if (h != NULL) |
| 4802 | { |
| 4803 | struct elf32_nios2_link_hash_entry *eh |
| 4804 | = (struct elf32_nios2_link_hash_entry *)h; |
| 4805 | h->got.refcount++; |
| 4806 | old_tls_type = elf32_nios2_hash_entry(h)->tls_type; |
| 4807 | if (r_type == R_NIOS2_CALL16 |
| 4808 | || r_type == R_NIOS2_CALL_LO |
| 4809 | || r_type == R_NIOS2_CALL_HA) |
| 4810 | { |
| 4811 | /* Make sure a plt entry is created for this symbol if |
| 4812 | it turns out to be a function defined by a dynamic |
| 4813 | object. */ |
| 4814 | h->plt.refcount++; |
| 4815 | h->needs_plt = 1; |
| 4816 | h->type = STT_FUNC; |
| 4817 | eh->got_types_used |= CALL_USED; |
| 4818 | } |
| 4819 | else |
| 4820 | eh->got_types_used |= GOT_USED; |
| 4821 | } |
| 4822 | else |
| 4823 | { |
| 4824 | /* This is a global offset table entry for a local symbol. */ |
| 4825 | if (local_got_refcounts == NULL) |
| 4826 | { |
| 4827 | bfd_size_type size; |
| 4828 | |
| 4829 | size = symtab_hdr->sh_info; |
| 4830 | size *= (sizeof (bfd_signed_vma) + sizeof (char)); |
| 4831 | local_got_refcounts |
| 4832 | = ((bfd_signed_vma *) bfd_zalloc (abfd, size)); |
| 4833 | if (local_got_refcounts == NULL) |
| 4834 | return FALSE; |
| 4835 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
| 4836 | elf32_nios2_local_got_tls_type (abfd) |
| 4837 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); |
| 4838 | } |
| 4839 | local_got_refcounts[r_symndx]++; |
| 4840 | old_tls_type = elf32_nios2_local_got_tls_type (abfd) [r_symndx]; |
| 4841 | } |
| 4842 | |
| 4843 | /* We will already have issued an error message if there is a |
| 4844 | TLS / non-TLS mismatch, based on the symbol type. We don't |
| 4845 | support any linker relaxations. So just combine any TLS |
| 4846 | types needed. */ |
| 4847 | if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL |
| 4848 | && tls_type != GOT_NORMAL) |
| 4849 | tls_type |= old_tls_type; |
| 4850 | |
| 4851 | if (old_tls_type != tls_type) |
| 4852 | { |
| 4853 | if (h != NULL) |
| 4854 | elf32_nios2_hash_entry (h)->tls_type = tls_type; |
| 4855 | else |
| 4856 | elf32_nios2_local_got_tls_type (abfd) [r_symndx] = tls_type; |
| 4857 | } |
| 4858 | } |
| 4859 | /* Fall through */ |
| 4860 | case R_NIOS2_TLS_LDM16: |
| 4861 | if (r_type == R_NIOS2_TLS_LDM16) |
| 4862 | htab->tls_ldm_got.refcount++; |
| 4863 | |
| 4864 | if (htab->root.sgot == NULL) |
| 4865 | { |
| 4866 | if (htab->root.dynobj == NULL) |
| 4867 | htab->root.dynobj = abfd; |
| 4868 | if (!create_got_section (htab->root.dynobj, info)) |
| 4869 | return FALSE; |
| 4870 | } |
| 4871 | break; |
| 4872 | |
| 4873 | /* This relocation describes the C++ object vtable hierarchy. |
| 4874 | Reconstruct it for later use during GC. */ |
| 4875 | case R_NIOS2_GNU_VTINHERIT: |
| 4876 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| 4877 | return FALSE; |
| 4878 | break; |
| 4879 | |
| 4880 | /* This relocation describes which C++ vtable entries are actually |
| 4881 | used. Record for later use during GC. */ |
| 4882 | case R_NIOS2_GNU_VTENTRY: |
| 4883 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
| 4884 | return FALSE; |
| 4885 | break; |
| 4886 | |
| 4887 | case R_NIOS2_BFD_RELOC_32: |
| 4888 | case R_NIOS2_CALL26: |
| 4889 | case R_NIOS2_CALL26_NOAT: |
| 4890 | case R_NIOS2_HIADJ16: |
| 4891 | case R_NIOS2_LO16: |
| 4892 | |
| 4893 | if (h != NULL) |
| 4894 | { |
| 4895 | /* If this reloc is in a read-only section, we might |
| 4896 | need a copy reloc. We can't check reliably at this |
| 4897 | stage whether the section is read-only, as input |
| 4898 | sections have not yet been mapped to output sections. |
| 4899 | Tentatively set the flag for now, and correct in |
| 4900 | adjust_dynamic_symbol. */ |
| 4901 | if (!bfd_link_pic (info)) |
| 4902 | h->non_got_ref = 1; |
| 4903 | |
| 4904 | /* Make sure a plt entry is created for this symbol if it |
| 4905 | turns out to be a function defined by a dynamic object. */ |
| 4906 | h->plt.refcount++; |
| 4907 | |
| 4908 | if (r_type == R_NIOS2_CALL26 || r_type == R_NIOS2_CALL26_NOAT) |
| 4909 | h->needs_plt = 1; |
| 4910 | } |
| 4911 | |
| 4912 | /* If we are creating a shared library, we need to copy the |
| 4913 | reloc into the shared library. */ |
| 4914 | if (bfd_link_pic (info) |
| 4915 | && (sec->flags & SEC_ALLOC) != 0 |
| 4916 | && (r_type == R_NIOS2_BFD_RELOC_32 |
| 4917 | || (h != NULL && ! h->needs_plt |
| 4918 | && (! SYMBOLIC_BIND (info, h) || ! h->def_regular)))) |
| 4919 | { |
| 4920 | struct elf32_nios2_dyn_relocs *p; |
| 4921 | struct elf32_nios2_dyn_relocs **head; |
| 4922 | |
| 4923 | /* When creating a shared object, we must copy these |
| 4924 | reloc types into the output file. We create a reloc |
| 4925 | section in dynobj and make room for this reloc. */ |
| 4926 | if (sreloc == NULL) |
| 4927 | { |
| 4928 | sreloc = _bfd_elf_make_dynamic_reloc_section |
| 4929 | (sec, dynobj, 2, abfd, TRUE); |
| 4930 | if (sreloc == NULL) |
| 4931 | return FALSE; |
| 4932 | } |
| 4933 | |
| 4934 | /* If this is a global symbol, we count the number of |
| 4935 | relocations we need for this symbol. */ |
| 4936 | if (h != NULL) |
| 4937 | head = &((struct elf32_nios2_link_hash_entry *) h)->dyn_relocs; |
| 4938 | else |
| 4939 | { |
| 4940 | /* Track dynamic relocs needed for local syms too. |
| 4941 | We really need local syms available to do this |
| 4942 | easily. Oh well. */ |
| 4943 | |
| 4944 | asection *s; |
| 4945 | void *vpp; |
| 4946 | Elf_Internal_Sym *isym; |
| 4947 | |
| 4948 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
| 4949 | abfd, r_symndx); |
| 4950 | if (isym == NULL) |
| 4951 | return FALSE; |
| 4952 | |
| 4953 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 4954 | if (s == NULL) |
| 4955 | s = sec; |
| 4956 | |
| 4957 | vpp = &elf_section_data (s)->local_dynrel; |
| 4958 | head = (struct elf32_nios2_dyn_relocs **) vpp; |
| 4959 | } |
| 4960 | |
| 4961 | p = *head; |
| 4962 | if (p == NULL || p->sec != sec) |
| 4963 | { |
| 4964 | bfd_size_type amt = sizeof *p; |
| 4965 | p = ((struct elf32_nios2_dyn_relocs *) |
| 4966 | bfd_alloc (htab->root.dynobj, amt)); |
| 4967 | if (p == NULL) |
| 4968 | return FALSE; |
| 4969 | p->next = *head; |
| 4970 | *head = p; |
| 4971 | p->sec = sec; |
| 4972 | p->count = 0; |
| 4973 | p->pc_count = 0; |
| 4974 | } |
| 4975 | |
| 4976 | p->count += 1; |
| 4977 | |
| 4978 | } |
| 4979 | break; |
| 4980 | } |
| 4981 | } |
| 4982 | |
| 4983 | return TRUE; |
| 4984 | } |
| 4985 | |
| 4986 | |
| 4987 | /* Implement elf_backend_gc_mark_hook: |
| 4988 | Return the section that should be marked against GC for a given |
| 4989 | relocation. */ |
| 4990 | static asection * |
| 4991 | nios2_elf32_gc_mark_hook (asection *sec, |
| 4992 | struct bfd_link_info *info, |
| 4993 | Elf_Internal_Rela *rel, |
| 4994 | struct elf_link_hash_entry *h, |
| 4995 | Elf_Internal_Sym *sym) |
| 4996 | { |
| 4997 | if (h != NULL) |
| 4998 | switch (ELF32_R_TYPE (rel->r_info)) |
| 4999 | { |
| 5000 | case R_NIOS2_GNU_VTINHERIT: |
| 5001 | case R_NIOS2_GNU_VTENTRY: |
| 5002 | return NULL; |
| 5003 | } |
| 5004 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
| 5005 | } |
| 5006 | |
| 5007 | /* Implement elf_backend_gc_sweep_hook: |
| 5008 | Update the got entry reference counts for the section being removed. */ |
| 5009 | static bfd_boolean |
| 5010 | nios2_elf32_gc_sweep_hook (bfd *abfd, |
| 5011 | struct bfd_link_info *info, |
| 5012 | asection *sec, |
| 5013 | const Elf_Internal_Rela *relocs) |
| 5014 | { |
| 5015 | Elf_Internal_Shdr *symtab_hdr; |
| 5016 | struct elf_link_hash_entry **sym_hashes; |
| 5017 | bfd_signed_vma *local_got_refcounts; |
| 5018 | const Elf_Internal_Rela *rel, *relend; |
| 5019 | bfd *dynobj; |
| 5020 | |
| 5021 | if (bfd_link_relocatable (info)) |
| 5022 | return TRUE; |
| 5023 | |
| 5024 | elf_section_data (sec)->local_dynrel = NULL; |
| 5025 | |
| 5026 | dynobj = elf_hash_table (info)->dynobj; |
| 5027 | if (dynobj == NULL) |
| 5028 | return TRUE; |
| 5029 | |
| 5030 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 5031 | sym_hashes = elf_sym_hashes (abfd); |
| 5032 | local_got_refcounts = elf_local_got_refcounts (abfd); |
| 5033 | |
| 5034 | relend = relocs + sec->reloc_count; |
| 5035 | for (rel = relocs; rel < relend; rel++) |
| 5036 | { |
| 5037 | unsigned long r_symndx; |
| 5038 | struct elf_link_hash_entry *h = NULL; |
| 5039 | int r_type; |
| 5040 | |
| 5041 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 5042 | if (r_symndx >= symtab_hdr->sh_info) |
| 5043 | { |
| 5044 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 5045 | while (h->root.type == bfd_link_hash_indirect |
| 5046 | || h->root.type == bfd_link_hash_warning) |
| 5047 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 5048 | } |
| 5049 | |
| 5050 | r_type = ELF32_R_TYPE (rel->r_info); |
| 5051 | switch (r_type) |
| 5052 | { |
| 5053 | case R_NIOS2_GOT16: |
| 5054 | case R_NIOS2_GOT_LO: |
| 5055 | case R_NIOS2_GOT_HA: |
| 5056 | case R_NIOS2_CALL16: |
| 5057 | case R_NIOS2_CALL_LO: |
| 5058 | case R_NIOS2_CALL_HA: |
| 5059 | if (h != NULL) |
| 5060 | { |
| 5061 | if (h->got.refcount > 0) |
| 5062 | --h->got.refcount; |
| 5063 | } |
| 5064 | else if (local_got_refcounts != NULL) |
| 5065 | { |
| 5066 | if (local_got_refcounts[r_symndx] > 0) |
| 5067 | --local_got_refcounts[r_symndx]; |
| 5068 | } |
| 5069 | break; |
| 5070 | |
| 5071 | case R_NIOS2_PCREL_LO: |
| 5072 | case R_NIOS2_PCREL_HA: |
| 5073 | case R_NIOS2_BFD_RELOC_32: |
| 5074 | case R_NIOS2_CALL26: |
| 5075 | case R_NIOS2_CALL26_NOAT: |
| 5076 | if (h != NULL) |
| 5077 | { |
| 5078 | struct elf32_nios2_link_hash_entry *eh; |
| 5079 | struct elf32_nios2_dyn_relocs **pp; |
| 5080 | struct elf32_nios2_dyn_relocs *p; |
| 5081 | |
| 5082 | eh = (struct elf32_nios2_link_hash_entry *) h; |
| 5083 | |
| 5084 | if (h->plt.refcount > 0) |
| 5085 | --h->plt.refcount; |
| 5086 | |
| 5087 | if (r_type == R_NIOS2_PCREL_LO || r_type == R_NIOS2_PCREL_HA |
| 5088 | || r_type == R_NIOS2_BFD_RELOC_32) |
| 5089 | { |
| 5090 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; |
| 5091 | pp = &p->next) |
| 5092 | if (p->sec == sec) |
| 5093 | { |
| 5094 | p->count -= 1; |
| 5095 | if (p->count == 0) |
| 5096 | *pp = p->next; |
| 5097 | break; |
| 5098 | } |
| 5099 | } |
| 5100 | } |
| 5101 | break; |
| 5102 | |
| 5103 | default: |
| 5104 | break; |
| 5105 | } |
| 5106 | } |
| 5107 | |
| 5108 | return TRUE; |
| 5109 | } |
| 5110 | |
| 5111 | /* Implement elf_backend_finish_dynamic_symbols: |
| 5112 | Finish up dynamic symbol handling. We set the contents of various |
| 5113 | dynamic sections here. */ |
| 5114 | static bfd_boolean |
| 5115 | nios2_elf32_finish_dynamic_symbol (bfd *output_bfd, |
| 5116 | struct bfd_link_info *info, |
| 5117 | struct elf_link_hash_entry *h, |
| 5118 | Elf_Internal_Sym *sym) |
| 5119 | { |
| 5120 | struct elf32_nios2_link_hash_table *htab; |
| 5121 | struct elf32_nios2_link_hash_entry *eh |
| 5122 | = (struct elf32_nios2_link_hash_entry *)h; |
| 5123 | int use_plt; |
| 5124 | |
| 5125 | htab = elf32_nios2_hash_table (info); |
| 5126 | |
| 5127 | if (h->plt.offset != (bfd_vma) -1) |
| 5128 | { |
| 5129 | asection *splt; |
| 5130 | asection *sgotplt; |
| 5131 | asection *srela; |
| 5132 | bfd_vma plt_index; |
| 5133 | bfd_vma got_offset; |
| 5134 | Elf_Internal_Rela rela; |
| 5135 | bfd_byte *loc; |
| 5136 | bfd_vma got_address; |
| 5137 | |
| 5138 | /* This symbol has an entry in the procedure linkage table. Set |
| 5139 | it up. */ |
| 5140 | BFD_ASSERT (h->dynindx != -1); |
| 5141 | splt = htab->root.splt; |
| 5142 | sgotplt = htab->root.sgotplt; |
| 5143 | srela = htab->root.srelplt; |
| 5144 | BFD_ASSERT (splt != NULL && sgotplt != NULL && srela != NULL); |
| 5145 | |
| 5146 | /* Emit the PLT entry. */ |
| 5147 | if (bfd_link_pic (info)) |
| 5148 | { |
| 5149 | nios2_elf32_install_data (splt, nios2_so_plt_entry, h->plt.offset, |
| 5150 | 3); |
| 5151 | plt_index = (h->plt.offset - 24) / 12; |
| 5152 | got_offset = (plt_index + 3) * 4; |
| 5153 | nios2_elf32_install_imm16 (splt, h->plt.offset, |
| 5154 | hiadj(plt_index * 4)); |
| 5155 | nios2_elf32_install_imm16 (splt, h->plt.offset + 4, |
| 5156 | (plt_index * 4) & 0xffff); |
| 5157 | nios2_elf32_install_imm16 (splt, h->plt.offset + 8, |
| 5158 | 0xfff4 - h->plt.offset); |
| 5159 | got_address = (sgotplt->output_section->vma + sgotplt->output_offset |
| 5160 | + got_offset); |
| 5161 | |
| 5162 | /* Fill in the entry in the global offset table. There are no |
| 5163 | res_n slots for a shared object PLT, instead the .got.plt entries |
| 5164 | point to the PLT entries. */ |
| 5165 | bfd_put_32 (output_bfd, |
| 5166 | splt->output_section->vma + splt->output_offset |
| 5167 | + h->plt.offset, sgotplt->contents + got_offset); |
| 5168 | } |
| 5169 | else |
| 5170 | { |
| 5171 | plt_index = (h->plt.offset - 28 - htab->res_n_size) / 12; |
| 5172 | got_offset = (plt_index + 3) * 4; |
| 5173 | |
| 5174 | nios2_elf32_install_data (splt, nios2_plt_entry, h->plt.offset, 3); |
| 5175 | got_address = (sgotplt->output_section->vma + sgotplt->output_offset |
| 5176 | + got_offset); |
| 5177 | nios2_elf32_install_imm16 (splt, h->plt.offset, hiadj(got_address)); |
| 5178 | nios2_elf32_install_imm16 (splt, h->plt.offset + 4, |
| 5179 | got_address & 0xffff); |
| 5180 | |
| 5181 | /* Fill in the entry in the global offset table. */ |
| 5182 | bfd_put_32 (output_bfd, |
| 5183 | splt->output_section->vma + splt->output_offset |
| 5184 | + plt_index * 4, sgotplt->contents + got_offset); |
| 5185 | } |
| 5186 | |
| 5187 | /* Fill in the entry in the .rela.plt section. */ |
| 5188 | rela.r_offset = got_address; |
| 5189 | rela.r_info = ELF32_R_INFO (h->dynindx, R_NIOS2_JUMP_SLOT); |
| 5190 | rela.r_addend = 0; |
| 5191 | loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); |
| 5192 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 5193 | |
| 5194 | if (!h->def_regular) |
| 5195 | { |
| 5196 | /* Mark the symbol as undefined, rather than as defined in |
| 5197 | the .plt section. Leave the value alone. */ |
| 5198 | sym->st_shndx = SHN_UNDEF; |
| 5199 | /* If the symbol is weak, we do need to clear the value. |
| 5200 | Otherwise, the PLT entry would provide a definition for |
| 5201 | the symbol even if the symbol wasn't defined anywhere, |
| 5202 | and so the symbol would never be NULL. */ |
| 5203 | if (!h->ref_regular_nonweak) |
| 5204 | sym->st_value = 0; |
| 5205 | } |
| 5206 | } |
| 5207 | |
| 5208 | use_plt = (eh->got_types_used == CALL_USED |
| 5209 | && h->plt.offset != (bfd_vma) -1); |
| 5210 | |
| 5211 | if (!use_plt && h->got.offset != (bfd_vma) -1 |
| 5212 | && (elf32_nios2_hash_entry (h)->tls_type & GOT_TLS_GD) == 0 |
| 5213 | && (elf32_nios2_hash_entry (h)->tls_type & GOT_TLS_IE) == 0) |
| 5214 | { |
| 5215 | asection *sgot; |
| 5216 | asection *srela; |
| 5217 | Elf_Internal_Rela rela; |
| 5218 | bfd_byte *loc; |
| 5219 | bfd_vma offset; |
| 5220 | |
| 5221 | /* This symbol has an entry in the global offset table. Set it |
| 5222 | up. */ |
| 5223 | sgot = htab->root.sgot; |
| 5224 | srela = htab->root.srelgot; |
| 5225 | BFD_ASSERT (sgot != NULL && srela != NULL); |
| 5226 | |
| 5227 | offset = (h->got.offset & ~(bfd_vma) 1); |
| 5228 | rela.r_offset = (sgot->output_section->vma |
| 5229 | + sgot->output_offset + offset); |
| 5230 | |
| 5231 | /* If this is a -Bsymbolic link, and the symbol is defined |
| 5232 | locally, we just want to emit a RELATIVE reloc. Likewise if |
| 5233 | the symbol was forced to be local because of a version file. |
| 5234 | The entry in the global offset table will already have been |
| 5235 | initialized in the relocate_section function. */ |
| 5236 | |
| 5237 | if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h)) |
| 5238 | { |
| 5239 | rela.r_info = ELF32_R_INFO (0, R_NIOS2_RELATIVE); |
| 5240 | rela.r_addend = bfd_get_signed_32 (output_bfd, |
| 5241 | (sgot->contents + offset)); |
| 5242 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset); |
| 5243 | } |
| 5244 | else |
| 5245 | { |
| 5246 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
| 5247 | sgot->contents + offset); |
| 5248 | rela.r_info = ELF32_R_INFO (h->dynindx, R_NIOS2_GLOB_DAT); |
| 5249 | rela.r_addend = 0; |
| 5250 | } |
| 5251 | |
| 5252 | loc = srela->contents; |
| 5253 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); |
| 5254 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 5255 | } |
| 5256 | |
| 5257 | if (use_plt && h->got.offset != (bfd_vma) -1) |
| 5258 | { |
| 5259 | bfd_vma offset = (h->got.offset & ~(bfd_vma) 1); |
| 5260 | asection *sgot = htab->root.sgot; |
| 5261 | asection *splt = htab->root.splt; |
| 5262 | bfd_put_32 (output_bfd, (splt->output_section->vma + splt->output_offset |
| 5263 | + h->plt.offset), |
| 5264 | sgot->contents + offset); |
| 5265 | } |
| 5266 | |
| 5267 | if (h->needs_copy) |
| 5268 | { |
| 5269 | asection *s; |
| 5270 | Elf_Internal_Rela rela; |
| 5271 | bfd_byte *loc; |
| 5272 | |
| 5273 | /* This symbol needs a copy reloc. Set it up. */ |
| 5274 | BFD_ASSERT (h->dynindx != -1 |
| 5275 | && (h->root.type == bfd_link_hash_defined |
| 5276 | || h->root.type == bfd_link_hash_defweak)); |
| 5277 | |
| 5278 | rela.r_offset = (h->root.u.def.value |
| 5279 | + h->root.u.def.section->output_section->vma |
| 5280 | + h->root.u.def.section->output_offset); |
| 5281 | rela.r_info = ELF32_R_INFO (h->dynindx, R_NIOS2_COPY); |
| 5282 | rela.r_addend = 0; |
| 5283 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
| 5284 | s = htab->root.sreldynrelro; |
| 5285 | else |
| 5286 | s = htab->root.srelbss; |
| 5287 | BFD_ASSERT (s != NULL); |
| 5288 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
| 5289 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 5290 | } |
| 5291 | |
| 5292 | /* Mark _DYNAMIC, _GLOBAL_OFFSET_TABLE_, and _gp_got as absolute. */ |
| 5293 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
| 5294 | || h == elf_hash_table (info)->hgot |
| 5295 | || h == elf32_nios2_hash_table (info)->h_gp_got) |
| 5296 | sym->st_shndx = SHN_ABS; |
| 5297 | |
| 5298 | return TRUE; |
| 5299 | } |
| 5300 | |
| 5301 | /* Implement elf_backend_finish_dynamic_sections. */ |
| 5302 | static bfd_boolean |
| 5303 | nios2_elf32_finish_dynamic_sections (bfd *output_bfd, |
| 5304 | struct bfd_link_info *info) |
| 5305 | { |
| 5306 | bfd *dynobj; |
| 5307 | asection *sgotplt; |
| 5308 | asection *sdyn; |
| 5309 | struct elf32_nios2_link_hash_table *htab; |
| 5310 | |
| 5311 | htab = elf32_nios2_hash_table (info); |
| 5312 | dynobj = elf_hash_table (info)->dynobj; |
| 5313 | sgotplt = htab->root.sgotplt; |
| 5314 | BFD_ASSERT (sgotplt != NULL); |
| 5315 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
| 5316 | |
| 5317 | if (elf_hash_table (info)->dynamic_sections_created) |
| 5318 | { |
| 5319 | asection *splt; |
| 5320 | Elf32_External_Dyn *dyncon, *dynconend; |
| 5321 | |
| 5322 | splt = htab->root.splt; |
| 5323 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
| 5324 | |
| 5325 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
| 5326 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
| 5327 | for (; dyncon < dynconend; dyncon++) |
| 5328 | { |
| 5329 | Elf_Internal_Dyn dyn; |
| 5330 | asection *s; |
| 5331 | |
| 5332 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
| 5333 | |
| 5334 | switch (dyn.d_tag) |
| 5335 | { |
| 5336 | default: |
| 5337 | break; |
| 5338 | |
| 5339 | case DT_PLTGOT: |
| 5340 | s = htab->root.sgotplt; |
| 5341 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 5342 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 5343 | break; |
| 5344 | |
| 5345 | case DT_JMPREL: |
| 5346 | s = htab->root.srelplt; |
| 5347 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 5348 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 5349 | break; |
| 5350 | |
| 5351 | case DT_PLTRELSZ: |
| 5352 | s = htab->root.srelplt; |
| 5353 | dyn.d_un.d_val = s->size; |
| 5354 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 5355 | break; |
| 5356 | |
| 5357 | case DT_NIOS2_GP: |
| 5358 | s = htab->root.sgotplt; |
| 5359 | dyn.d_un.d_ptr |
| 5360 | = s->output_section->vma + s->output_offset + 0x7ff0; |
| 5361 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 5362 | break; |
| 5363 | } |
| 5364 | } |
| 5365 | |
| 5366 | /* Fill in the first entry in the procedure linkage table. */ |
| 5367 | if (splt->size > 0) |
| 5368 | { |
| 5369 | bfd_vma got_address = (sgotplt->output_section->vma |
| 5370 | + sgotplt->output_offset); |
| 5371 | if (bfd_link_pic (info)) |
| 5372 | { |
| 5373 | bfd_vma got_pcrel = got_address - (splt->output_section->vma |
| 5374 | + splt->output_offset); |
| 5375 | /* Both GOT and PLT must be aligned to a 16-byte boundary |
| 5376 | for the two loads to share the %hiadj part. The 4-byte |
| 5377 | offset for nextpc is accounted for in the %lo offsets |
| 5378 | on the loads. */ |
| 5379 | BFD_ASSERT ((got_pcrel & 0xf) == 0); |
| 5380 | nios2_elf32_install_data (splt, nios2_so_plt0_entry, 0, 6); |
| 5381 | nios2_elf32_install_imm16 (splt, 4, hiadj (got_pcrel)); |
| 5382 | nios2_elf32_install_imm16 (splt, 12, got_pcrel & 0xffff); |
| 5383 | nios2_elf32_install_imm16 (splt, 16, (got_pcrel + 4) & 0xffff); |
| 5384 | } |
| 5385 | else |
| 5386 | { |
| 5387 | /* Divide by 4 here, not 3 because we already corrected for the |
| 5388 | res_N branches. */ |
| 5389 | bfd_vma res_size = (splt->size - 28) / 4; |
| 5390 | bfd_vma res_start = (splt->output_section->vma |
| 5391 | + splt->output_offset); |
| 5392 | bfd_vma res_offset; |
| 5393 | |
| 5394 | for (res_offset = 0; res_offset < res_size; res_offset += 4) |
| 5395 | bfd_put_32 (output_bfd, |
| 5396 | 6 | ((res_size - (res_offset + 4)) << 6), |
| 5397 | splt->contents + res_offset); |
| 5398 | |
| 5399 | /* The GOT must be aligned to a 16-byte boundary for the |
| 5400 | two loads to share the same %hiadj part. */ |
| 5401 | BFD_ASSERT ((got_address & 0xf) == 0); |
| 5402 | |
| 5403 | nios2_elf32_install_data (splt, nios2_plt0_entry, res_size, 7); |
| 5404 | nios2_elf32_install_imm16 (splt, res_size, hiadj (res_start)); |
| 5405 | nios2_elf32_install_imm16 (splt, res_size + 4, |
| 5406 | res_start & 0xffff); |
| 5407 | nios2_elf32_install_imm16 (splt, res_size + 12, |
| 5408 | hiadj (got_address)); |
| 5409 | nios2_elf32_install_imm16 (splt, res_size + 16, |
| 5410 | (got_address + 4) & 0xffff); |
| 5411 | nios2_elf32_install_imm16 (splt, res_size + 20, |
| 5412 | (got_address + 8) & 0xffff); |
| 5413 | } |
| 5414 | } |
| 5415 | } |
| 5416 | /* Fill in the first three entries in the global offset table. */ |
| 5417 | if (sgotplt->size > 0) |
| 5418 | { |
| 5419 | if (sdyn == NULL) |
| 5420 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents); |
| 5421 | else |
| 5422 | bfd_put_32 (output_bfd, |
| 5423 | sdyn->output_section->vma + sdyn->output_offset, |
| 5424 | sgotplt->contents); |
| 5425 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 4); |
| 5426 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 8); |
| 5427 | } |
| 5428 | |
| 5429 | elf_section_data (sgotplt->output_section)->this_hdr.sh_entsize = 4; |
| 5430 | |
| 5431 | return TRUE; |
| 5432 | } |
| 5433 | |
| 5434 | /* Implement elf_backend_adjust_dynamic_symbol: |
| 5435 | Adjust a symbol defined by a dynamic object and referenced by a |
| 5436 | regular object. The current definition is in some section of the |
| 5437 | dynamic object, but we're not including those sections. We have to |
| 5438 | change the definition to something the rest of the link can |
| 5439 | understand. */ |
| 5440 | static bfd_boolean |
| 5441 | nios2_elf32_adjust_dynamic_symbol (struct bfd_link_info *info, |
| 5442 | struct elf_link_hash_entry *h) |
| 5443 | { |
| 5444 | struct elf32_nios2_link_hash_table *htab; |
| 5445 | bfd *dynobj; |
| 5446 | asection *s, *srel; |
| 5447 | unsigned align2; |
| 5448 | |
| 5449 | htab = elf32_nios2_hash_table (info); |
| 5450 | dynobj = elf_hash_table (info)->dynobj; |
| 5451 | |
| 5452 | /* Make sure we know what is going on here. */ |
| 5453 | BFD_ASSERT (dynobj != NULL |
| 5454 | && (h->needs_plt |
| 5455 | || h->u.weakdef != NULL |
| 5456 | || (h->def_dynamic |
| 5457 | && h->ref_regular |
| 5458 | && !h->def_regular))); |
| 5459 | |
| 5460 | /* If this is a function, put it in the procedure linkage table. We |
| 5461 | will fill in the contents of the procedure linkage table later, |
| 5462 | when we know the address of the .got section. */ |
| 5463 | if (h->type == STT_FUNC || h->needs_plt) |
| 5464 | { |
| 5465 | if (h->plt.refcount <= 0 |
| 5466 | || SYMBOL_CALLS_LOCAL (info, h) |
| 5467 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
| 5468 | && h->root.type == bfd_link_hash_undefweak)) |
| 5469 | { |
| 5470 | /* This case can occur if we saw a PLT reloc in an input |
| 5471 | file, but the symbol was never referred to by a dynamic |
| 5472 | object, or if all references were garbage collected. In |
| 5473 | such a case, we don't actually need to build a procedure |
| 5474 | linkage table, and we can just do a PCREL reloc instead. */ |
| 5475 | h->plt.offset = (bfd_vma) -1; |
| 5476 | h->needs_plt = 0; |
| 5477 | } |
| 5478 | |
| 5479 | return TRUE; |
| 5480 | } |
| 5481 | |
| 5482 | /* Reinitialize the plt offset now that it is not used as a reference |
| 5483 | count any more. */ |
| 5484 | h->plt.offset = (bfd_vma) -1; |
| 5485 | |
| 5486 | /* If this is a weak symbol, and there is a real definition, the |
| 5487 | processor independent code will have arranged for us to see the |
| 5488 | real definition first, and we can just use the same value. */ |
| 5489 | if (h->u.weakdef != NULL) |
| 5490 | { |
| 5491 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
| 5492 | || h->u.weakdef->root.type == bfd_link_hash_defweak); |
| 5493 | h->root.u.def.section = h->u.weakdef->root.u.def.section; |
| 5494 | h->root.u.def.value = h->u.weakdef->root.u.def.value; |
| 5495 | return TRUE; |
| 5496 | } |
| 5497 | |
| 5498 | /* If there are no non-GOT references, we do not need a copy |
| 5499 | relocation. */ |
| 5500 | if (!h->non_got_ref) |
| 5501 | return TRUE; |
| 5502 | |
| 5503 | /* This is a reference to a symbol defined by a dynamic object which |
| 5504 | is not a function. |
| 5505 | If we are creating a shared library, we must presume that the |
| 5506 | only references to the symbol are via the global offset table. |
| 5507 | For such cases we need not do anything here; the relocations will |
| 5508 | be handled correctly by relocate_section. */ |
| 5509 | if (bfd_link_pic (info)) |
| 5510 | return TRUE; |
| 5511 | |
| 5512 | if (h->size == 0) |
| 5513 | { |
| 5514 | _bfd_error_handler (_("dynamic variable `%s' is zero size"), |
| 5515 | h->root.root.string); |
| 5516 | return TRUE; |
| 5517 | } |
| 5518 | |
| 5519 | /* We must allocate the symbol in our .dynbss section, which will |
| 5520 | become part of the .bss section of the executable. There will be |
| 5521 | an entry for this symbol in the .dynsym section. The dynamic |
| 5522 | object will contain position independent code, so all references |
| 5523 | from the dynamic object to this symbol will go through the global |
| 5524 | offset table. The dynamic linker will use the .dynsym entry to |
| 5525 | determine the address it must put in the global offset table, so |
| 5526 | both the dynamic object and the regular object will refer to the |
| 5527 | same memory location for the variable. */ |
| 5528 | /* We must generate a R_NIOS2_COPY reloc to tell the dynamic linker to |
| 5529 | copy the initial value out of the dynamic object and into the |
| 5530 | runtime process image. We need to remember the offset into the |
| 5531 | .rela.bss section we are going to use. */ |
| 5532 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
| 5533 | { |
| 5534 | s = htab->root.sdynrelro; |
| 5535 | srel = htab->root.sreldynrelro; |
| 5536 | } |
| 5537 | else |
| 5538 | { |
| 5539 | s = htab->root.sdynbss; |
| 5540 | srel = htab->root.srelbss; |
| 5541 | } |
| 5542 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
| 5543 | { |
| 5544 | srel->size += sizeof (Elf32_External_Rela); |
| 5545 | h->needs_copy = 1; |
| 5546 | } |
| 5547 | |
| 5548 | align2 = bfd_log2 (h->size); |
| 5549 | if (align2 > h->root.u.def.section->alignment_power) |
| 5550 | align2 = h->root.u.def.section->alignment_power; |
| 5551 | |
| 5552 | /* Align dynbss. */ |
| 5553 | s->size = BFD_ALIGN (s->size, (bfd_size_type)1 << align2); |
| 5554 | if (align2 > bfd_get_section_alignment (dynobj, s) |
| 5555 | && !bfd_set_section_alignment (dynobj, s, align2)) |
| 5556 | return FALSE; |
| 5557 | |
| 5558 | /* Define the symbol as being at this point in the section. */ |
| 5559 | h->root.u.def.section = s; |
| 5560 | h->root.u.def.value = s->size; |
| 5561 | |
| 5562 | /* Increment the section size to make room for the symbol. */ |
| 5563 | s->size += h->size; |
| 5564 | |
| 5565 | return TRUE; |
| 5566 | } |
| 5567 | |
| 5568 | /* Worker function for nios2_elf32_size_dynamic_sections. */ |
| 5569 | static bfd_boolean |
| 5570 | adjust_dynrelocs (struct elf_link_hash_entry *h, PTR inf) |
| 5571 | { |
| 5572 | struct bfd_link_info *info; |
| 5573 | struct elf32_nios2_link_hash_table *htab; |
| 5574 | |
| 5575 | if (h->root.type == bfd_link_hash_indirect) |
| 5576 | return TRUE; |
| 5577 | |
| 5578 | if (h->root.type == bfd_link_hash_warning) |
| 5579 | /* When warning symbols are created, they **replace** the "real" |
| 5580 | entry in the hash table, thus we never get to see the real |
| 5581 | symbol in a hash traversal. So look at it now. */ |
| 5582 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 5583 | |
| 5584 | info = (struct bfd_link_info *) inf; |
| 5585 | htab = elf32_nios2_hash_table (info); |
| 5586 | |
| 5587 | if (h->plt.offset != (bfd_vma)-1) |
| 5588 | h->plt.offset += htab->res_n_size; |
| 5589 | if (htab->root.splt == h->root.u.def.section) |
| 5590 | h->root.u.def.value += htab->res_n_size; |
| 5591 | |
| 5592 | return TRUE; |
| 5593 | } |
| 5594 | |
| 5595 | /* Another worker function for nios2_elf32_size_dynamic_sections. |
| 5596 | Allocate space in .plt, .got and associated reloc sections for |
| 5597 | dynamic relocs. */ |
| 5598 | static bfd_boolean |
| 5599 | allocate_dynrelocs (struct elf_link_hash_entry *h, PTR inf) |
| 5600 | { |
| 5601 | struct bfd_link_info *info; |
| 5602 | struct elf32_nios2_link_hash_table *htab; |
| 5603 | struct elf32_nios2_link_hash_entry *eh; |
| 5604 | struct elf32_nios2_dyn_relocs *p; |
| 5605 | int use_plt; |
| 5606 | |
| 5607 | if (h->root.type == bfd_link_hash_indirect) |
| 5608 | return TRUE; |
| 5609 | |
| 5610 | if (h->root.type == bfd_link_hash_warning) |
| 5611 | /* When warning symbols are created, they **replace** the "real" |
| 5612 | entry in the hash table, thus we never get to see the real |
| 5613 | symbol in a hash traversal. So look at it now. */ |
| 5614 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 5615 | |
| 5616 | info = (struct bfd_link_info *) inf; |
| 5617 | htab = elf32_nios2_hash_table (info); |
| 5618 | |
| 5619 | if (htab->root.dynamic_sections_created |
| 5620 | && h->plt.refcount > 0) |
| 5621 | { |
| 5622 | /* Make sure this symbol is output as a dynamic symbol. |
| 5623 | Undefined weak syms won't yet be marked as dynamic. */ |
| 5624 | if (h->dynindx == -1 |
| 5625 | && !h->forced_local |
| 5626 | && !bfd_elf_link_record_dynamic_symbol (info, h)) |
| 5627 | return FALSE; |
| 5628 | |
| 5629 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) |
| 5630 | { |
| 5631 | asection *s = htab->root.splt; |
| 5632 | |
| 5633 | /* Allocate room for the header. */ |
| 5634 | if (s->size == 0) |
| 5635 | { |
| 5636 | if (bfd_link_pic (info)) |
| 5637 | s->size = 24; |
| 5638 | else |
| 5639 | s->size = 28; |
| 5640 | } |
| 5641 | |
| 5642 | h->plt.offset = s->size; |
| 5643 | |
| 5644 | /* If this symbol is not defined in a regular file, and we are |
| 5645 | not generating a shared library, then set the symbol to this |
| 5646 | location in the .plt. This is required to make function |
| 5647 | pointers compare as equal between the normal executable and |
| 5648 | the shared library. */ |
| 5649 | if (! bfd_link_pic (info) |
| 5650 | && !h->def_regular) |
| 5651 | { |
| 5652 | h->root.u.def.section = s; |
| 5653 | h->root.u.def.value = h->plt.offset; |
| 5654 | } |
| 5655 | |
| 5656 | /* Make room for this entry. */ |
| 5657 | s->size += 12; |
| 5658 | |
| 5659 | /* We also need to make an entry in the .rela.plt section. */ |
| 5660 | htab->root.srelplt->size += sizeof (Elf32_External_Rela); |
| 5661 | |
| 5662 | /* And the .got.plt section. */ |
| 5663 | htab->root.sgotplt->size += 4; |
| 5664 | } |
| 5665 | else |
| 5666 | { |
| 5667 | h->plt.offset = (bfd_vma) -1; |
| 5668 | h->needs_plt = 0; |
| 5669 | } |
| 5670 | } |
| 5671 | else |
| 5672 | { |
| 5673 | h->plt.offset = (bfd_vma) -1; |
| 5674 | h->needs_plt = 0; |
| 5675 | } |
| 5676 | |
| 5677 | eh = (struct elf32_nios2_link_hash_entry *) h; |
| 5678 | use_plt = (eh->got_types_used == CALL_USED |
| 5679 | && h->plt.offset != (bfd_vma) -1); |
| 5680 | |
| 5681 | if (h->got.refcount > 0) |
| 5682 | { |
| 5683 | asection *s; |
| 5684 | bfd_boolean dyn; |
| 5685 | int tls_type = eh->tls_type; |
| 5686 | int indx; |
| 5687 | |
| 5688 | /* Make sure this symbol is output as a dynamic symbol. |
| 5689 | Undefined weak syms won't yet be marked as dynamic. */ |
| 5690 | if (h->dynindx == -1 |
| 5691 | && !h->forced_local |
| 5692 | && !bfd_elf_link_record_dynamic_symbol (info, h)) |
| 5693 | return FALSE; |
| 5694 | |
| 5695 | s = htab->root.sgot; |
| 5696 | h->got.offset = s->size; |
| 5697 | |
| 5698 | if (tls_type == GOT_UNKNOWN) |
| 5699 | abort (); |
| 5700 | |
| 5701 | if (tls_type == GOT_NORMAL) |
| 5702 | /* Non-TLS symbols need one GOT slot. */ |
| 5703 | s->size += 4; |
| 5704 | else |
| 5705 | { |
| 5706 | if (tls_type & GOT_TLS_GD) |
| 5707 | /* R_NIOS2_TLS_GD16 needs 2 consecutive GOT slots. */ |
| 5708 | s->size += 8; |
| 5709 | if (tls_type & GOT_TLS_IE) |
| 5710 | /* R_NIOS2_TLS_IE16 needs one GOT slot. */ |
| 5711 | s->size += 4; |
| 5712 | } |
| 5713 | |
| 5714 | dyn = htab->root.dynamic_sections_created; |
| 5715 | |
| 5716 | indx = 0; |
| 5717 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) |
| 5718 | && (!bfd_link_pic (info) |
| 5719 | || !SYMBOL_REFERENCES_LOCAL (info, h))) |
| 5720 | indx = h->dynindx; |
| 5721 | |
| 5722 | if (tls_type != GOT_NORMAL |
| 5723 | && (bfd_link_pic (info) || indx != 0) |
| 5724 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
| 5725 | || h->root.type != bfd_link_hash_undefweak)) |
| 5726 | { |
| 5727 | if (tls_type & GOT_TLS_IE) |
| 5728 | htab->root.srelgot->size += sizeof (Elf32_External_Rela); |
| 5729 | |
| 5730 | if (tls_type & GOT_TLS_GD) |
| 5731 | htab->root.srelgot->size += sizeof (Elf32_External_Rela); |
| 5732 | |
| 5733 | if ((tls_type & GOT_TLS_GD) && indx != 0) |
| 5734 | htab->root.srelgot->size += sizeof (Elf32_External_Rela); |
| 5735 | } |
| 5736 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
| 5737 | || h->root.type != bfd_link_hash_undefweak) |
| 5738 | && !use_plt |
| 5739 | && (bfd_link_pic (info) |
| 5740 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) |
| 5741 | htab->root.srelgot->size += sizeof (Elf32_External_Rela); |
| 5742 | } |
| 5743 | else |
| 5744 | h->got.offset = (bfd_vma) -1; |
| 5745 | |
| 5746 | if (eh->dyn_relocs == NULL) |
| 5747 | return TRUE; |
| 5748 | |
| 5749 | /* In the shared -Bsymbolic case, discard space allocated for |
| 5750 | dynamic pc-relative relocs against symbols which turn out to be |
| 5751 | defined in regular objects. For the normal shared case, discard |
| 5752 | space for pc-relative relocs that have become local due to symbol |
| 5753 | visibility changes. */ |
| 5754 | |
| 5755 | if (bfd_link_pic (info)) |
| 5756 | { |
| 5757 | if (h->def_regular |
| 5758 | && (h->forced_local || SYMBOLIC_BIND (info, h))) |
| 5759 | { |
| 5760 | struct elf32_nios2_dyn_relocs **pp; |
| 5761 | |
| 5762 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
| 5763 | { |
| 5764 | p->count -= p->pc_count; |
| 5765 | p->pc_count = 0; |
| 5766 | if (p->count == 0) |
| 5767 | *pp = p->next; |
| 5768 | else |
| 5769 | pp = &p->next; |
| 5770 | } |
| 5771 | } |
| 5772 | |
| 5773 | /* Also discard relocs on undefined weak syms with non-default |
| 5774 | visibility. */ |
| 5775 | if (eh->dyn_relocs != NULL |
| 5776 | && h->root.type == bfd_link_hash_undefweak) |
| 5777 | { |
| 5778 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
| 5779 | eh->dyn_relocs = NULL; |
| 5780 | |
| 5781 | /* Make sure undefined weak symbols are output as a dynamic |
| 5782 | symbol in PIEs. */ |
| 5783 | else if (h->dynindx == -1 |
| 5784 | && !h->forced_local |
| 5785 | && !bfd_elf_link_record_dynamic_symbol (info, h)) |
| 5786 | return FALSE; |
| 5787 | } |
| 5788 | } |
| 5789 | else |
| 5790 | { |
| 5791 | /* For the non-shared case, discard space for relocs against |
| 5792 | symbols which turn out to need copy relocs or are not |
| 5793 | dynamic. */ |
| 5794 | |
| 5795 | if (!h->non_got_ref |
| 5796 | && ((h->def_dynamic && !h->def_regular) |
| 5797 | || (htab->root.dynamic_sections_created |
| 5798 | && (h->root.type == bfd_link_hash_undefweak |
| 5799 | || h->root.type == bfd_link_hash_undefined)))) |
| 5800 | { |
| 5801 | /* Make sure this symbol is output as a dynamic symbol. |
| 5802 | Undefined weak syms won't yet be marked as dynamic. */ |
| 5803 | if (h->dynindx == -1 |
| 5804 | && !h->forced_local |
| 5805 | && !bfd_elf_link_record_dynamic_symbol (info, h)) |
| 5806 | return FALSE; |
| 5807 | |
| 5808 | /* If that succeeded, we know we'll be keeping all the |
| 5809 | relocs. */ |
| 5810 | if (h->dynindx != -1) |
| 5811 | goto keep; |
| 5812 | } |
| 5813 | |
| 5814 | eh->dyn_relocs = NULL; |
| 5815 | |
| 5816 | keep: ; |
| 5817 | } |
| 5818 | |
| 5819 | /* Finally, allocate space. */ |
| 5820 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 5821 | { |
| 5822 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
| 5823 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
| 5824 | } |
| 5825 | |
| 5826 | return TRUE; |
| 5827 | } |
| 5828 | |
| 5829 | /* Implement elf_backend_size_dynamic_sections: |
| 5830 | Set the sizes of the dynamic sections. */ |
| 5831 | static bfd_boolean |
| 5832 | nios2_elf32_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 5833 | struct bfd_link_info *info) |
| 5834 | { |
| 5835 | bfd *dynobj; |
| 5836 | asection *s; |
| 5837 | bfd_boolean plt; |
| 5838 | bfd_boolean got; |
| 5839 | bfd_boolean relocs; |
| 5840 | bfd *ibfd; |
| 5841 | struct elf32_nios2_link_hash_table *htab; |
| 5842 | |
| 5843 | htab = elf32_nios2_hash_table (info); |
| 5844 | dynobj = elf_hash_table (info)->dynobj; |
| 5845 | BFD_ASSERT (dynobj != NULL); |
| 5846 | |
| 5847 | htab->res_n_size = 0; |
| 5848 | if (elf_hash_table (info)->dynamic_sections_created) |
| 5849 | { |
| 5850 | /* Set the contents of the .interp section to the interpreter. */ |
| 5851 | if (bfd_link_executable (info) && !info->nointerp) |
| 5852 | { |
| 5853 | s = bfd_get_linker_section (dynobj, ".interp"); |
| 5854 | BFD_ASSERT (s != NULL); |
| 5855 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 5856 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| 5857 | } |
| 5858 | } |
| 5859 | else |
| 5860 | { |
| 5861 | /* We may have created entries in the .rela.got section. |
| 5862 | However, if we are not creating the dynamic sections, we will |
| 5863 | not actually use these entries. Reset the size of .rela.got, |
| 5864 | which will cause it to get stripped from the output file |
| 5865 | below. */ |
| 5866 | s = htab->root.srelgot; |
| 5867 | if (s != NULL) |
| 5868 | s->size = 0; |
| 5869 | } |
| 5870 | |
| 5871 | /* Set up .got offsets for local syms, and space for local dynamic |
| 5872 | relocs. */ |
| 5873 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 5874 | { |
| 5875 | bfd_signed_vma *local_got; |
| 5876 | bfd_signed_vma *end_local_got; |
| 5877 | char *local_tls_type; |
| 5878 | bfd_size_type locsymcount; |
| 5879 | Elf_Internal_Shdr *symtab_hdr; |
| 5880 | asection *srel; |
| 5881 | |
| 5882 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
| 5883 | continue; |
| 5884 | |
| 5885 | for (s = ibfd->sections; s != NULL; s = s->next) |
| 5886 | { |
| 5887 | struct elf32_nios2_dyn_relocs *p; |
| 5888 | |
| 5889 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
| 5890 | { |
| 5891 | if (!bfd_is_abs_section (p->sec) |
| 5892 | && bfd_is_abs_section (p->sec->output_section)) |
| 5893 | { |
| 5894 | /* Input section has been discarded, either because |
| 5895 | it is a copy of a linkonce section or due to |
| 5896 | linker script /DISCARD/, so we'll be discarding |
| 5897 | the relocs too. */ |
| 5898 | } |
| 5899 | else if (p->count != 0) |
| 5900 | { |
| 5901 | srel = elf_section_data (p->sec)->sreloc; |
| 5902 | srel->size += p->count * sizeof (Elf32_External_Rela); |
| 5903 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
| 5904 | info->flags |= DF_TEXTREL; |
| 5905 | } |
| 5906 | } |
| 5907 | } |
| 5908 | |
| 5909 | local_got = elf_local_got_refcounts (ibfd); |
| 5910 | if (!local_got) |
| 5911 | continue; |
| 5912 | |
| 5913 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
| 5914 | locsymcount = symtab_hdr->sh_info; |
| 5915 | end_local_got = local_got + locsymcount; |
| 5916 | local_tls_type = elf32_nios2_local_got_tls_type (ibfd); |
| 5917 | s = htab->root.sgot; |
| 5918 | srel = htab->root.srelgot; |
| 5919 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
| 5920 | { |
| 5921 | if (*local_got > 0) |
| 5922 | { |
| 5923 | *local_got = s->size; |
| 5924 | if (*local_tls_type & GOT_TLS_GD) |
| 5925 | /* TLS_GD relocs need an 8-byte structure in the GOT. */ |
| 5926 | s->size += 8; |
| 5927 | if (*local_tls_type & GOT_TLS_IE) |
| 5928 | s->size += 4; |
| 5929 | if (*local_tls_type == GOT_NORMAL) |
| 5930 | s->size += 4; |
| 5931 | |
| 5932 | if (bfd_link_pic (info) || *local_tls_type == GOT_TLS_GD) |
| 5933 | srel->size += sizeof (Elf32_External_Rela); |
| 5934 | } |
| 5935 | else |
| 5936 | *local_got = (bfd_vma) -1; |
| 5937 | } |
| 5938 | } |
| 5939 | |
| 5940 | if (htab->tls_ldm_got.refcount > 0) |
| 5941 | { |
| 5942 | /* Allocate two GOT entries and one dynamic relocation (if necessary) |
| 5943 | for R_NIOS2_TLS_LDM16 relocations. */ |
| 5944 | htab->tls_ldm_got.offset = htab->root.sgot->size; |
| 5945 | htab->root.sgot->size += 8; |
| 5946 | if (bfd_link_pic (info)) |
| 5947 | htab->root.srelgot->size += sizeof (Elf32_External_Rela); |
| 5948 | } |
| 5949 | else |
| 5950 | htab->tls_ldm_got.offset = -1; |
| 5951 | |
| 5952 | /* Allocate global sym .plt and .got entries, and space for global |
| 5953 | sym dynamic relocs. */ |
| 5954 | elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info); |
| 5955 | |
| 5956 | if (elf_hash_table (info)->dynamic_sections_created) |
| 5957 | { |
| 5958 | /* If the .got section is more than 0x8000 bytes, we add |
| 5959 | 0x8000 to the value of _gp_got, so that 16-bit relocations |
| 5960 | have a greater chance of working. */ |
| 5961 | if (htab->root.sgot->size >= 0x8000 |
| 5962 | && elf32_nios2_hash_table (info)->h_gp_got->root.u.def.value == 0) |
| 5963 | elf32_nios2_hash_table (info)->h_gp_got->root.u.def.value = 0x8000; |
| 5964 | } |
| 5965 | |
| 5966 | /* The check_relocs and adjust_dynamic_symbol entry points have |
| 5967 | determined the sizes of the various dynamic sections. Allocate |
| 5968 | memory for them. */ |
| 5969 | plt = FALSE; |
| 5970 | got = FALSE; |
| 5971 | relocs = FALSE; |
| 5972 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 5973 | { |
| 5974 | const char *name; |
| 5975 | |
| 5976 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
| 5977 | continue; |
| 5978 | |
| 5979 | /* It's OK to base decisions on the section name, because none |
| 5980 | of the dynobj section names depend upon the input files. */ |
| 5981 | name = bfd_get_section_name (dynobj, s); |
| 5982 | |
| 5983 | if (s == htab->root.splt) |
| 5984 | { |
| 5985 | /* Remember whether there is a PLT. */ |
| 5986 | plt = s->size != 0; |
| 5987 | |
| 5988 | /* Correct for the number of res_N branches. */ |
| 5989 | if (plt && !bfd_link_pic (info)) |
| 5990 | { |
| 5991 | htab->res_n_size = (s->size-28) / 3; |
| 5992 | s->size += htab->res_n_size; |
| 5993 | } |
| 5994 | } |
| 5995 | else if (CONST_STRNEQ (name, ".rela")) |
| 5996 | { |
| 5997 | if (s->size != 0) |
| 5998 | { |
| 5999 | relocs = TRUE; |
| 6000 | |
| 6001 | /* We use the reloc_count field as a counter if we need |
| 6002 | to copy relocs into the output file. */ |
| 6003 | s->reloc_count = 0; |
| 6004 | } |
| 6005 | } |
| 6006 | else if (s == htab->root.sgot |
| 6007 | || s == htab->root.sgotplt) |
| 6008 | { |
| 6009 | if (s->size != 0) |
| 6010 | got = TRUE; |
| 6011 | } |
| 6012 | else if (s != htab->root.sdynbss |
| 6013 | && s != htab->root.sdynrelro) |
| 6014 | /* It's not one of our sections, so don't allocate space. */ |
| 6015 | continue; |
| 6016 | |
| 6017 | if (s->size == 0) |
| 6018 | { |
| 6019 | /* If we don't need this section, strip it from the |
| 6020 | output file. This is mostly to handle .rela.bss and |
| 6021 | .rela.plt. We must create both sections in |
| 6022 | create_dynamic_sections, because they must be created |
| 6023 | before the linker maps input sections to output |
| 6024 | sections. The linker does that before |
| 6025 | adjust_dynamic_symbol is called, and it is that |
| 6026 | function which decides whether anything needs to go |
| 6027 | into these sections. */ |
| 6028 | s->flags |= SEC_EXCLUDE; |
| 6029 | continue; |
| 6030 | } |
| 6031 | |
| 6032 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
| 6033 | continue; |
| 6034 | |
| 6035 | /* Allocate memory for the section contents. */ |
| 6036 | /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. |
| 6037 | Unused entries should be reclaimed before the section's contents |
| 6038 | are written out, but at the moment this does not happen. Thus in |
| 6039 | order to prevent writing out garbage, we initialize the section's |
| 6040 | contents to zero. */ |
| 6041 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
| 6042 | if (s->contents == NULL) |
| 6043 | return FALSE; |
| 6044 | } |
| 6045 | |
| 6046 | /* Adjust dynamic symbols that point to the plt to account for the |
| 6047 | now-known number of resN slots. */ |
| 6048 | if (htab->res_n_size) |
| 6049 | elf_link_hash_traverse (& htab->root, adjust_dynrelocs, info); |
| 6050 | |
| 6051 | if (elf_hash_table (info)->dynamic_sections_created) |
| 6052 | { |
| 6053 | /* Add some entries to the .dynamic section. We fill in the |
| 6054 | values later, in elf_nios2_finish_dynamic_sections, but we |
| 6055 | must add the entries now so that we get the correct size for |
| 6056 | the .dynamic section. The DT_DEBUG entry is filled in by the |
| 6057 | dynamic linker and used by the debugger. */ |
| 6058 | #define add_dynamic_entry(TAG, VAL) \ |
| 6059 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
| 6060 | |
| 6061 | if (!bfd_link_pic (info) && !add_dynamic_entry (DT_DEBUG, 0)) |
| 6062 | return FALSE; |
| 6063 | |
| 6064 | if (got && !add_dynamic_entry (DT_PLTGOT, 0)) |
| 6065 | return FALSE; |
| 6066 | |
| 6067 | if (plt |
| 6068 | && (!add_dynamic_entry (DT_PLTRELSZ, 0) |
| 6069 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) |
| 6070 | || !add_dynamic_entry (DT_JMPREL, 0))) |
| 6071 | return FALSE; |
| 6072 | |
| 6073 | if (relocs |
| 6074 | && (!add_dynamic_entry (DT_RELA, 0) |
| 6075 | || !add_dynamic_entry (DT_RELASZ, 0) |
| 6076 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))) |
| 6077 | return FALSE; |
| 6078 | |
| 6079 | if (!bfd_link_pic (info) && !add_dynamic_entry (DT_NIOS2_GP, 0)) |
| 6080 | return FALSE; |
| 6081 | |
| 6082 | if ((info->flags & DF_TEXTREL) != 0 |
| 6083 | && !add_dynamic_entry (DT_TEXTREL, 0)) |
| 6084 | return FALSE; |
| 6085 | } |
| 6086 | #undef add_dynamic_entry |
| 6087 | |
| 6088 | return TRUE; |
| 6089 | } |
| 6090 | |
| 6091 | /* Free the derived linker hash table. */ |
| 6092 | static void |
| 6093 | nios2_elf32_link_hash_table_free (bfd *obfd) |
| 6094 | { |
| 6095 | struct elf32_nios2_link_hash_table *htab |
| 6096 | = (struct elf32_nios2_link_hash_table *) obfd->link.hash; |
| 6097 | |
| 6098 | bfd_hash_table_free (&htab->bstab); |
| 6099 | _bfd_elf_link_hash_table_free (obfd); |
| 6100 | } |
| 6101 | |
| 6102 | /* Implement bfd_elf32_bfd_link_hash_table_create. */ |
| 6103 | static struct bfd_link_hash_table * |
| 6104 | nios2_elf32_link_hash_table_create (bfd *abfd) |
| 6105 | { |
| 6106 | struct elf32_nios2_link_hash_table *ret; |
| 6107 | bfd_size_type amt = sizeof (struct elf32_nios2_link_hash_table); |
| 6108 | |
| 6109 | ret = bfd_zmalloc (amt); |
| 6110 | if (ret == NULL) |
| 6111 | return NULL; |
| 6112 | |
| 6113 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
| 6114 | link_hash_newfunc, |
| 6115 | sizeof (struct |
| 6116 | elf32_nios2_link_hash_entry), |
| 6117 | NIOS2_ELF_DATA)) |
| 6118 | { |
| 6119 | free (ret); |
| 6120 | return NULL; |
| 6121 | } |
| 6122 | |
| 6123 | /* Init the stub hash table too. */ |
| 6124 | if (!bfd_hash_table_init (&ret->bstab, stub_hash_newfunc, |
| 6125 | sizeof (struct elf32_nios2_stub_hash_entry))) |
| 6126 | { |
| 6127 | _bfd_elf_link_hash_table_free (abfd); |
| 6128 | return NULL; |
| 6129 | } |
| 6130 | ret->root.root.hash_table_free = nios2_elf32_link_hash_table_free; |
| 6131 | |
| 6132 | return &ret->root.root; |
| 6133 | } |
| 6134 | |
| 6135 | /* Implement elf_backend_reloc_type_class. */ |
| 6136 | static enum elf_reloc_type_class |
| 6137 | nios2_elf32_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 6138 | const asection *rel_sec ATTRIBUTE_UNUSED, |
| 6139 | const Elf_Internal_Rela *rela) |
| 6140 | { |
| 6141 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
| 6142 | { |
| 6143 | case R_NIOS2_RELATIVE: |
| 6144 | return reloc_class_relative; |
| 6145 | case R_NIOS2_JUMP_SLOT: |
| 6146 | return reloc_class_plt; |
| 6147 | case R_NIOS2_COPY: |
| 6148 | return reloc_class_copy; |
| 6149 | default: |
| 6150 | return reloc_class_normal; |
| 6151 | } |
| 6152 | } |
| 6153 | |
| 6154 | /* Return 1 if target is one of ours. */ |
| 6155 | static bfd_boolean |
| 6156 | is_nios2_elf_target (const struct bfd_target *targ) |
| 6157 | { |
| 6158 | return (targ == &nios2_elf32_le_vec |
| 6159 | || targ == &nios2_elf32_be_vec); |
| 6160 | } |
| 6161 | |
| 6162 | /* Implement elf_backend_add_symbol_hook. |
| 6163 | This hook is called by the linker when adding symbols from an object |
| 6164 | file. We use it to put .comm items in .sbss, and not .bss. */ |
| 6165 | static bfd_boolean |
| 6166 | nios2_elf_add_symbol_hook (bfd *abfd, |
| 6167 | struct bfd_link_info *info, |
| 6168 | Elf_Internal_Sym *sym, |
| 6169 | const char **namep ATTRIBUTE_UNUSED, |
| 6170 | flagword *flagsp ATTRIBUTE_UNUSED, |
| 6171 | asection **secp, |
| 6172 | bfd_vma *valp) |
| 6173 | { |
| 6174 | bfd *dynobj; |
| 6175 | |
| 6176 | if (sym->st_shndx == SHN_COMMON |
| 6177 | && !bfd_link_relocatable (info) |
| 6178 | && sym->st_size <= elf_gp_size (abfd) |
| 6179 | && is_nios2_elf_target (info->output_bfd->xvec)) |
| 6180 | { |
| 6181 | /* Common symbols less than or equal to -G nn bytes are automatically |
| 6182 | put into .sbss. */ |
| 6183 | struct elf32_nios2_link_hash_table *htab; |
| 6184 | |
| 6185 | htab = elf32_nios2_hash_table (info); |
| 6186 | if (htab->sbss == NULL) |
| 6187 | { |
| 6188 | flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED; |
| 6189 | |
| 6190 | dynobj = elf_hash_table (info)->dynobj; |
| 6191 | if (!dynobj) |
| 6192 | dynobj = abfd; |
| 6193 | |
| 6194 | htab->sbss = bfd_make_section_anyway_with_flags (dynobj, ".sbss", |
| 6195 | flags); |
| 6196 | if (htab->sbss == NULL) |
| 6197 | return FALSE; |
| 6198 | } |
| 6199 | |
| 6200 | *secp = htab->sbss; |
| 6201 | *valp = sym->st_size; |
| 6202 | } |
| 6203 | |
| 6204 | return TRUE; |
| 6205 | } |
| 6206 | |
| 6207 | /* Implement elf_backend_can_make_relative_eh_frame: |
| 6208 | Decide whether to attempt to turn absptr or lsda encodings in |
| 6209 | shared libraries into pcrel within the given input section. */ |
| 6210 | static bfd_boolean |
| 6211 | nios2_elf32_can_make_relative_eh_frame (bfd *input_bfd ATTRIBUTE_UNUSED, |
| 6212 | struct bfd_link_info *info |
| 6213 | ATTRIBUTE_UNUSED, |
| 6214 | asection *eh_frame_section |
| 6215 | ATTRIBUTE_UNUSED) |
| 6216 | { |
| 6217 | /* We can't use PC-relative encodings in the .eh_frame section. */ |
| 6218 | return FALSE; |
| 6219 | } |
| 6220 | |
| 6221 | /* Implement elf_backend_special_sections. */ |
| 6222 | const struct bfd_elf_special_section elf32_nios2_special_sections[] = |
| 6223 | { |
| 6224 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, |
| 6225 | SHF_ALLOC + SHF_WRITE + SHF_NIOS2_GPREL }, |
| 6226 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, |
| 6227 | SHF_ALLOC + SHF_WRITE + SHF_NIOS2_GPREL }, |
| 6228 | { NULL, 0, 0, 0, 0 } |
| 6229 | }; |
| 6230 | |
| 6231 | #define ELF_ARCH bfd_arch_nios2 |
| 6232 | #define ELF_TARGET_ID NIOS2_ELF_DATA |
| 6233 | #define ELF_MACHINE_CODE EM_ALTERA_NIOS2 |
| 6234 | |
| 6235 | /* The Nios II MMU uses a 4K page size. */ |
| 6236 | |
| 6237 | #define ELF_MAXPAGESIZE 0x1000 |
| 6238 | |
| 6239 | #define bfd_elf32_bfd_link_hash_table_create \ |
| 6240 | nios2_elf32_link_hash_table_create |
| 6241 | |
| 6242 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
| 6243 | nios2_elf32_merge_private_bfd_data |
| 6244 | |
| 6245 | /* Relocation table lookup macros. */ |
| 6246 | |
| 6247 | #define bfd_elf32_bfd_reloc_type_lookup nios2_elf32_bfd_reloc_type_lookup |
| 6248 | #define bfd_elf32_bfd_reloc_name_lookup nios2_elf32_bfd_reloc_name_lookup |
| 6249 | |
| 6250 | /* JUMP_TABLE_LINK macros. */ |
| 6251 | |
| 6252 | /* elf_info_to_howto (using RELA relocations). */ |
| 6253 | |
| 6254 | #define elf_info_to_howto nios2_elf32_info_to_howto |
| 6255 | |
| 6256 | /* elf backend functions. */ |
| 6257 | |
| 6258 | #define elf_backend_can_gc_sections 1 |
| 6259 | #define elf_backend_can_refcount 1 |
| 6260 | #define elf_backend_plt_readonly 1 |
| 6261 | #define elf_backend_want_got_plt 1 |
| 6262 | #define elf_backend_want_dynrelro 1 |
| 6263 | #define elf_backend_rela_normal 1 |
| 6264 | #define elf_backend_dtrel_excludes_plt 1 |
| 6265 | |
| 6266 | #define elf_backend_relocate_section nios2_elf32_relocate_section |
| 6267 | #define elf_backend_section_flags nios2_elf32_section_flags |
| 6268 | #define elf_backend_fake_sections nios2_elf32_fake_sections |
| 6269 | #define elf_backend_check_relocs nios2_elf32_check_relocs |
| 6270 | |
| 6271 | #define elf_backend_gc_mark_hook nios2_elf32_gc_mark_hook |
| 6272 | #define elf_backend_gc_sweep_hook nios2_elf32_gc_sweep_hook |
| 6273 | #define elf_backend_create_dynamic_sections \ |
| 6274 | nios2_elf32_create_dynamic_sections |
| 6275 | #define elf_backend_finish_dynamic_symbol nios2_elf32_finish_dynamic_symbol |
| 6276 | #define elf_backend_finish_dynamic_sections \ |
| 6277 | nios2_elf32_finish_dynamic_sections |
| 6278 | #define elf_backend_adjust_dynamic_symbol nios2_elf32_adjust_dynamic_symbol |
| 6279 | #define elf_backend_reloc_type_class nios2_elf32_reloc_type_class |
| 6280 | #define elf_backend_size_dynamic_sections nios2_elf32_size_dynamic_sections |
| 6281 | #define elf_backend_add_symbol_hook nios2_elf_add_symbol_hook |
| 6282 | #define elf_backend_copy_indirect_symbol nios2_elf32_copy_indirect_symbol |
| 6283 | #define elf_backend_object_p nios2_elf32_object_p |
| 6284 | |
| 6285 | #define elf_backend_grok_prstatus nios2_grok_prstatus |
| 6286 | #define elf_backend_grok_psinfo nios2_grok_psinfo |
| 6287 | |
| 6288 | #undef elf_backend_can_make_relative_eh_frame |
| 6289 | #define elf_backend_can_make_relative_eh_frame \ |
| 6290 | nios2_elf32_can_make_relative_eh_frame |
| 6291 | |
| 6292 | #define elf_backend_special_sections elf32_nios2_special_sections |
| 6293 | |
| 6294 | #define TARGET_LITTLE_SYM nios2_elf32_le_vec |
| 6295 | #define TARGET_LITTLE_NAME "elf32-littlenios2" |
| 6296 | #define TARGET_BIG_SYM nios2_elf32_be_vec |
| 6297 | #define TARGET_BIG_NAME "elf32-bignios2" |
| 6298 | |
| 6299 | #define elf_backend_got_header_size 12 |
| 6300 | #define elf_backend_default_execstack 0 |
| 6301 | |
| 6302 | #include "elf32-target.h" |