1 /* 32-bit ELF support for TI C6X 2 Copyright (C) 2010-2017 Free Software Foundation, Inc. 3 Contributed by Joseph Myers <joseph@codesourcery.com> 4 Bernd Schmidt <bernds@codesourcery.com> 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 #include "sysdep.h" 24 #include <limits.h> 25 #include "bfd.h" 26 #include "libbfd.h" 27 #include "libiberty.h" 28 #include "elf-bfd.h" 29 #include "elf/tic6x.h" 30 #include "elf32-tic6x.h" 31 32 #define ELF_DYNAMIC_INTERPRETER "/lib/ld-uClibc.so.0" 33 34 /* DSBT binaries have a default 128K stack. */ 35 #define DEFAULT_STACK_SIZE 0x20000 36 37 /* The size in bytes of an entry in the procedure linkage table. */ 38 #define PLT_ENTRY_SIZE 24 39 40 /* TI C6X ELF linker hash table. */ 41 42 struct elf32_tic6x_link_hash_table 43 { 44 struct elf_link_hash_table elf; 45 46 /* C6X specific command line arguments. */ 47 struct elf32_tic6x_params params; 48 49 /* Small local sym cache. */ 50 struct sym_cache sym_cache; 51 52 /* The output BFD, for convenience. */ 53 bfd *obfd; 54 55 /* The .dsbt section. */ 56 asection *dsbt; 57 }; 58 59 /* Get the TI C6X ELF linker hash table from a link_info structure. */ 60 61 #define elf32_tic6x_hash_table(p) \ 62 ((struct elf32_tic6x_link_hash_table *) ((p)->hash)) 63 64 /* TI C6X ELF linker hash entry. */ 65 66 struct elf32_tic6x_link_hash_entry 67 { 68 struct elf_link_hash_entry elf; 69 70 /* Track dynamic relocs copied for this symbol. */ 71 struct elf_dyn_relocs *dyn_relocs; 72 }; 73 74 typedef enum 75 { 76 DELETE_EXIDX_ENTRY, 77 INSERT_EXIDX_CANTUNWIND_AT_END 78 } 79 tic6x_unwind_edit_type; 80 81 /* A (sorted) list of edits to apply to an unwind table. */ 82 typedef struct tic6x_unwind_table_edit 83 { 84 tic6x_unwind_edit_type type; 85 /* Note: we sometimes want to insert an unwind entry corresponding to a 86 section different from the one we're currently writing out, so record the 87 (text) section this edit relates to here. */ 88 asection *linked_section; 89 unsigned int index; 90 struct tic6x_unwind_table_edit *next; 91 } 92 tic6x_unwind_table_edit; 93 94 typedef struct _tic6x_elf_section_data 95 { 96 /* Information about mapping symbols. */ 97 struct bfd_elf_section_data elf; 98 /* Information about unwind tables. */ 99 union 100 { 101 /* Unwind info attached to a text section. */ 102 struct 103 { 104 asection *tic6x_exidx_sec; 105 } text; 106 107 /* Unwind info attached to an .c6xabi.exidx section. */ 108 struct 109 { 110 tic6x_unwind_table_edit *unwind_edit_list; 111 tic6x_unwind_table_edit *unwind_edit_tail; 112 } exidx; 113 } u; 114 } 115 _tic6x_elf_section_data; 116 117 #define elf32_tic6x_section_data(sec) \ 118 ((_tic6x_elf_section_data *) elf_section_data (sec)) 119 120 struct elf32_tic6x_obj_tdata 121 { 122 struct elf_obj_tdata root; 123 124 /* Whether to use RELA relocations when generating relocations. 125 This is a per-object flag to allow the assembler to generate REL 126 relocations for use in linker testcases. */ 127 bfd_boolean use_rela_p; 128 }; 129 130 #define elf32_tic6x_tdata(abfd) \ 131 ((struct elf32_tic6x_obj_tdata *) (abfd)->tdata.any) 132 133 #define is_tic6x_elf(bfd) \ 134 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ 135 && elf_tdata (bfd) != NULL \ 136 && elf_object_id (bfd) == TIC6X_ELF_DATA) 137 138 /* C6X ELF uses two common sections. One is the usual one, and the 139 other is for small objects. All the small objects are kept 140 together, and then referenced via the gp pointer, which yields 141 faster assembler code. This is what we use for the small common 142 section. This approach is copied from ecoff.c. */ 143 static asection tic6x_elf_scom_section; 144 static asymbol tic6x_elf_scom_symbol; 145 static asymbol *tic6x_elf_scom_symbol_ptr; 146 147 static reloc_howto_type elf32_tic6x_howto_table[] = 148 { 149 HOWTO (R_C6000_NONE, /* type */ 150 0, /* rightshift */ 151 3, /* size (0 = byte, 1 = short, 2 = long) */ 152 0, /* bitsize */ 153 FALSE, /* pc_relative */ 154 0, /* bitpos */ 155 complain_overflow_dont,/* complain_on_overflow */ 156 bfd_elf_generic_reloc, /* special_function */ 157 "R_C6000_NONE", /* name */ 158 FALSE, /* partial_inplace */ 159 0, /* src_mask */ 160 0, /* dst_mask */ 161 FALSE), /* pcrel_offset */ 162 HOWTO (R_C6000_ABS32, /* type */ 163 0, /* rightshift */ 164 2, /* size (0 = byte, 1 = short, 2 = long) */ 165 32, /* bitsize */ 166 FALSE, /* pc_relative */ 167 0, /* bitpos */ 168 complain_overflow_dont,/* complain_on_overflow */ 169 bfd_elf_generic_reloc, /* special_function */ 170 "R_C6000_ABS32", /* name */ 171 FALSE, /* partial_inplace */ 172 0, /* src_mask */ 173 0xffffffff, /* dst_mask */ 174 FALSE), /* pcrel_offset */ 175 HOWTO (R_C6000_ABS16, /* type */ 176 0, /* rightshift */ 177 1, /* size (0 = byte, 1 = short, 2 = long) */ 178 16, /* bitsize */ 179 FALSE, /* pc_relative */ 180 0, /* bitpos */ 181 complain_overflow_bitfield,/* complain_on_overflow */ 182 bfd_elf_generic_reloc, /* special_function */ 183 "R_C6000_ABS16", /* name */ 184 FALSE, /* partial_inplace */ 185 0, /* src_mask */ 186 0x0000ffff, /* dst_mask */ 187 FALSE), /* pcrel_offset */ 188 HOWTO (R_C6000_ABS8, /* type */ 189 0, /* rightshift */ 190 0, /* size (0 = byte, 1 = short, 2 = long) */ 191 8, /* bitsize */ 192 FALSE, /* pc_relative */ 193 0, /* bitpos */ 194 complain_overflow_bitfield,/* complain_on_overflow */ 195 bfd_elf_generic_reloc, /* special_function */ 196 "R_C6000_ABS8", /* name */ 197 FALSE, /* partial_inplace */ 198 0, /* src_mask */ 199 0x000000ff, /* dst_mask */ 200 FALSE), /* pcrel_offset */ 201 HOWTO (R_C6000_PCR_S21, /* type */ 202 2, /* rightshift */ 203 2, /* size (0 = byte, 1 = short, 2 = long) */ 204 21, /* bitsize */ 205 TRUE, /* pc_relative */ 206 7, /* bitpos */ 207 complain_overflow_signed,/* complain_on_overflow */ 208 bfd_elf_generic_reloc, /* special_function */ 209 "R_C6000_PCR_S21", /* name */ 210 FALSE, /* partial_inplace */ 211 0, /* src_mask */ 212 0x0fffff80, /* dst_mask */ 213 TRUE), /* pcrel_offset */ 214 HOWTO (R_C6000_PCR_S12, /* type */ 215 2, /* rightshift */ 216 2, /* size (0 = byte, 1 = short, 2 = long) */ 217 12, /* bitsize */ 218 TRUE, /* pc_relative */ 219 16, /* bitpos */ 220 complain_overflow_signed,/* complain_on_overflow */ 221 bfd_elf_generic_reloc, /* special_function */ 222 "R_C6000_PCR_S12", /* name */ 223 FALSE, /* partial_inplace */ 224 0, /* src_mask */ 225 0x0fff0000, /* dst_mask */ 226 TRUE), /* pcrel_offset */ 227 HOWTO (R_C6000_PCR_S10, /* type */ 228 2, /* rightshift */ 229 2, /* size (0 = byte, 1 = short, 2 = long) */ 230 10, /* bitsize */ 231 TRUE, /* pc_relative */ 232 13, /* bitpos */ 233 complain_overflow_signed,/* complain_on_overflow */ 234 bfd_elf_generic_reloc, /* special_function */ 235 "R_C6000_PCR_S10", /* name */ 236 FALSE, /* partial_inplace */ 237 0, /* src_mask */ 238 0x007fe000, /* dst_mask */ 239 TRUE), /* pcrel_offset */ 240 HOWTO (R_C6000_PCR_S7, /* type */ 241 2, /* rightshift */ 242 2, /* size (0 = byte, 1 = short, 2 = long) */ 243 7, /* bitsize */ 244 TRUE, /* pc_relative */ 245 16, /* bitpos */ 246 complain_overflow_signed,/* complain_on_overflow */ 247 bfd_elf_generic_reloc, /* special_function */ 248 "R_C6000_PCR_S7", /* name */ 249 FALSE, /* partial_inplace */ 250 0, /* src_mask */ 251 0x007f0000, /* dst_mask */ 252 TRUE), /* pcrel_offset */ 253 HOWTO (R_C6000_ABS_S16, /* type */ 254 0, /* rightshift */ 255 2, /* size (0 = byte, 1 = short, 2 = long) */ 256 16, /* bitsize */ 257 FALSE, /* pc_relative */ 258 7, /* bitpos */ 259 complain_overflow_signed,/* complain_on_overflow */ 260 bfd_elf_generic_reloc, /* special_function */ 261 "R_C6000_ABS_S16", /* name */ 262 FALSE, /* partial_inplace */ 263 0, /* src_mask */ 264 0x007fff80, /* dst_mask */ 265 FALSE), /* pcrel_offset */ 266 HOWTO (R_C6000_ABS_L16, /* type */ 267 0, /* rightshift */ 268 2, /* size (0 = byte, 1 = short, 2 = long) */ 269 16, /* bitsize */ 270 FALSE, /* pc_relative */ 271 7, /* bitpos */ 272 complain_overflow_dont,/* complain_on_overflow */ 273 bfd_elf_generic_reloc, /* special_function */ 274 "R_C6000_ABS_L16", /* name */ 275 FALSE, /* partial_inplace */ 276 0, /* src_mask */ 277 0x007fff80, /* dst_mask */ 278 FALSE), /* pcrel_offset */ 279 HOWTO (R_C6000_ABS_H16, /* type */ 280 16, /* rightshift */ 281 2, /* size (0 = byte, 1 = short, 2 = long) */ 282 16, /* bitsize */ 283 FALSE, /* pc_relative */ 284 7, /* bitpos */ 285 complain_overflow_dont,/* complain_on_overflow */ 286 bfd_elf_generic_reloc, /* special_function */ 287 "R_C6000_ABS_H16", /* name */ 288 FALSE, /* partial_inplace */ 289 0, /* src_mask */ 290 0x007fff80, /* dst_mask */ 291 FALSE), /* pcrel_offset */ 292 HOWTO (R_C6000_SBR_U15_B, /* type */ 293 0, /* rightshift */ 294 2, /* size (0 = byte, 1 = short, 2 = long) */ 295 15, /* bitsize */ 296 FALSE, /* pc_relative */ 297 8, /* bitpos */ 298 complain_overflow_unsigned,/* complain_on_overflow */ 299 bfd_elf_generic_reloc, /* special_function */ 300 "R_C6000_SBR_U15_B", /* name */ 301 FALSE, /* partial_inplace */ 302 0, /* src_mask */ 303 0x007fff00, /* dst_mask */ 304 FALSE), /* pcrel_offset */ 305 HOWTO (R_C6000_SBR_U15_H, /* type */ 306 1, /* rightshift */ 307 2, /* size (0 = byte, 1 = short, 2 = long) */ 308 15, /* bitsize */ 309 FALSE, /* pc_relative */ 310 8, /* bitpos */ 311 complain_overflow_unsigned,/* complain_on_overflow */ 312 bfd_elf_generic_reloc, /* special_function */ 313 "R_C6000_SBR_U15_H", /* name */ 314 FALSE, /* partial_inplace */ 315 0, /* src_mask */ 316 0x007fff00, /* dst_mask */ 317 FALSE), /* pcrel_offset */ 318 HOWTO (R_C6000_SBR_U15_W, /* type */ 319 2, /* rightshift */ 320 2, /* size (0 = byte, 1 = short, 2 = long) */ 321 15, /* bitsize */ 322 FALSE, /* pc_relative */ 323 8, /* bitpos */ 324 complain_overflow_unsigned,/* complain_on_overflow */ 325 bfd_elf_generic_reloc, /* special_function */ 326 "R_C6000_SBR_U15_W", /* name */ 327 FALSE, /* partial_inplace */ 328 0, /* src_mask */ 329 0x007fff00, /* dst_mask */ 330 FALSE), /* pcrel_offset */ 331 HOWTO (R_C6000_SBR_S16, /* type */ 332 0, /* rightshift */ 333 2, /* size (0 = byte, 1 = short, 2 = long) */ 334 16, /* bitsize */ 335 FALSE, /* pc_relative */ 336 7, /* bitpos */ 337 complain_overflow_signed,/* complain_on_overflow */ 338 bfd_elf_generic_reloc, /* special_function */ 339 "R_C6000_SBR_S16", /* name */ 340 FALSE, /* partial_inplace */ 341 0, /* src_mask */ 342 0x007fff80, /* dst_mask */ 343 FALSE), /* pcrel_offset */ 344 HOWTO (R_C6000_SBR_L16_B, /* type */ 345 0, /* rightshift */ 346 2, /* size (0 = byte, 1 = short, 2 = long) */ 347 16, /* bitsize */ 348 FALSE, /* pc_relative */ 349 7, /* bitpos */ 350 complain_overflow_dont,/* complain_on_overflow */ 351 bfd_elf_generic_reloc, /* special_function */ 352 "R_C6000_SBR_L16_B", /* name */ 353 FALSE, /* partial_inplace */ 354 0, /* src_mask */ 355 0x007fff80, /* dst_mask */ 356 FALSE), /* pcrel_offset */ 357 HOWTO (R_C6000_SBR_L16_H, /* type */ 358 1, /* rightshift */ 359 2, /* size (0 = byte, 1 = short, 2 = long) */ 360 16, /* bitsize */ 361 FALSE, /* pc_relative */ 362 7, /* bitpos */ 363 complain_overflow_dont,/* complain_on_overflow */ 364 bfd_elf_generic_reloc, /* special_function */ 365 "R_C6000_SBR_L16_H", /* name */ 366 FALSE, /* partial_inplace */ 367 0, /* src_mask */ 368 0x007fff80, /* dst_mask */ 369 FALSE), /* pcrel_offset */ 370 HOWTO (R_C6000_SBR_L16_W, /* type */ 371 2, /* rightshift */ 372 2, /* size (0 = byte, 1 = short, 2 = long) */ 373 16, /* bitsize */ 374 FALSE, /* pc_relative */ 375 7, /* bitpos */ 376 complain_overflow_dont,/* complain_on_overflow */ 377 bfd_elf_generic_reloc, /* special_function */ 378 "R_C6000_SBR_L16_W", /* name */ 379 FALSE, /* partial_inplace */ 380 0, /* src_mask */ 381 0x007fff80, /* dst_mask */ 382 FALSE), /* pcrel_offset */ 383 HOWTO (R_C6000_SBR_H16_B, /* type */ 384 16, /* rightshift */ 385 2, /* size (0 = byte, 1 = short, 2 = long) */ 386 16, /* bitsize */ 387 FALSE, /* pc_relative */ 388 7, /* bitpos */ 389 complain_overflow_dont,/* complain_on_overflow */ 390 bfd_elf_generic_reloc, /* special_function */ 391 "R_C6000_SBR_H16_B", /* name */ 392 FALSE, /* partial_inplace */ 393 0, /* src_mask */ 394 0x007fff80, /* dst_mask */ 395 FALSE), /* pcrel_offset */ 396 HOWTO (R_C6000_SBR_H16_H, /* type */ 397 17, /* rightshift */ 398 2, /* size (0 = byte, 1 = short, 2 = long) */ 399 16, /* bitsize */ 400 FALSE, /* pc_relative */ 401 7, /* bitpos */ 402 complain_overflow_dont,/* complain_on_overflow */ 403 bfd_elf_generic_reloc, /* special_function */ 404 "R_C6000_SBR_H16_H", /* name */ 405 FALSE, /* partial_inplace */ 406 0, /* src_mask */ 407 0x007fff80, /* dst_mask */ 408 FALSE), /* pcrel_offset */ 409 HOWTO (R_C6000_SBR_H16_W, /* type */ 410 18, /* rightshift */ 411 2, /* size (0 = byte, 1 = short, 2 = long) */ 412 16, /* bitsize */ 413 FALSE, /* pc_relative */ 414 7, /* bitpos */ 415 complain_overflow_dont,/* complain_on_overflow */ 416 bfd_elf_generic_reloc, /* special_function */ 417 "R_C6000_SBR_H16_W", /* name */ 418 FALSE, /* partial_inplace */ 419 0, /* src_mask */ 420 0x007fff80, /* dst_mask */ 421 FALSE), /* pcrel_offset */ 422 HOWTO (R_C6000_SBR_GOT_U15_W, /* type */ 423 2, /* rightshift */ 424 2, /* size (0 = byte, 1 = short, 2 = long) */ 425 15, /* bitsize */ 426 FALSE, /* pc_relative */ 427 8, /* bitpos */ 428 complain_overflow_unsigned,/* complain_on_overflow */ 429 bfd_elf_generic_reloc, /* special_function */ 430 "R_C6000_SBR_GOT_U15_W",/* name */ 431 FALSE, /* partial_inplace */ 432 0, /* src_mask */ 433 0x007fff00, /* dst_mask */ 434 FALSE), /* pcrel_offset */ 435 HOWTO (R_C6000_SBR_GOT_L16_W, /* type */ 436 2, /* rightshift */ 437 2, /* size (0 = byte, 1 = short, 2 = long) */ 438 16, /* bitsize */ 439 FALSE, /* pc_relative */ 440 7, /* bitpos */ 441 complain_overflow_dont,/* complain_on_overflow */ 442 bfd_elf_generic_reloc, /* special_function */ 443 "R_C6000_SBR_GOT_L16_W",/* name */ 444 FALSE, /* partial_inplace */ 445 0, /* src_mask */ 446 0x007fff80, /* dst_mask */ 447 FALSE), /* pcrel_offset */ 448 HOWTO (R_C6000_SBR_GOT_H16_W, /* type */ 449 18, /* rightshift */ 450 2, /* size (0 = byte, 1 = short, 2 = long) */ 451 16, /* bitsize */ 452 FALSE, /* pc_relative */ 453 7, /* bitpos */ 454 complain_overflow_dont,/* complain_on_overflow */ 455 bfd_elf_generic_reloc, /* special_function */ 456 "R_C6000_SBR_GOT_H16_W",/* name */ 457 FALSE, /* partial_inplace */ 458 0, /* src_mask */ 459 0x007fff80, /* dst_mask */ 460 FALSE), /* pcrel_offset */ 461 HOWTO (R_C6000_DSBT_INDEX, /* type */ 462 0, /* rightshift */ 463 2, /* size (0 = byte, 1 = short, 2 = long) */ 464 15, /* bitsize */ 465 FALSE, /* pc_relative */ 466 8, /* bitpos */ 467 complain_overflow_unsigned,/* complain_on_overflow */ 468 bfd_elf_generic_reloc, /* special_function */ 469 "R_C6000_DSBT_INDEX", /* name */ 470 FALSE, /* partial_inplace */ 471 0, /* src_mask */ 472 0x007fff00, /* dst_mask */ 473 FALSE), /* pcrel_offset */ 474 HOWTO (R_C6000_PREL31, /* type */ 475 1, /* rightshift */ 476 2, /* size (0 = byte, 1 = short, 2 = long) */ 477 31, /* bitsize */ 478 TRUE, /* pc_relative */ 479 0, /* bitpos */ 480 complain_overflow_dont,/* complain_on_overflow */ 481 bfd_elf_generic_reloc, /* special_function */ 482 "R_C6000_PREL31", /* name */ 483 FALSE, /* partial_inplace */ 484 0, /* src_mask */ 485 0x7fffffff, /* dst_mask */ 486 TRUE), /* pcrel_offset */ 487 HOWTO (R_C6000_COPY, /* type */ 488 0, /* rightshift */ 489 2, /* size (0 = byte, 1 = short, 2 = long) */ 490 32, /* bitsize */ 491 FALSE, /* pc_relative */ 492 0, /* bitpos */ 493 complain_overflow_dont,/* complain_on_overflow */ 494 bfd_elf_generic_reloc, /* special_function */ 495 "R_C6000_COPY", /* name */ 496 FALSE, /* partial_inplace */ 497 0, /* src_mask */ 498 0xffffffff, /* dst_mask */ 499 FALSE), /* pcrel_offset */ 500 HOWTO (R_C6000_JUMP_SLOT, /* type */ 501 0, /* rightshift */ 502 2, /* size (0 = byte, 1 = short, 2 = long) */ 503 32, /* bitsize */ 504 FALSE, /* pc_relative */ 505 0, /* bitpos */ 506 complain_overflow_dont,/* complain_on_overflow */ 507 bfd_elf_generic_reloc, /* special_function */ 508 "R_C6000_JUMP_SLOT", /* name */ 509 FALSE, /* partial_inplace */ 510 0, /* src_mask */ 511 0xffffffff, /* dst_mask */ 512 FALSE), /* pcrel_offset */ 513 HOWTO (R_C6000_EHTYPE, /* type */ 514 0, /* rightshift */ 515 2, /* size (0 = byte, 1 = short, 2 = long) */ 516 32, /* bitsize */ 517 FALSE, /* pc_relative */ 518 0, /* bitpos */ 519 complain_overflow_dont,/* complain_on_overflow */ 520 bfd_elf_generic_reloc, /* special_function */ 521 "R_C6000_EHTYPE", /* name */ 522 FALSE, /* partial_inplace */ 523 0, /* src_mask */ 524 0xffffffff, /* dst_mask */ 525 FALSE), /* pcrel_offset */ 526 HOWTO (R_C6000_PCR_H16, /* type */ 527 16, /* rightshift */ 528 2, /* size (0 = byte, 1 = short, 2 = long) */ 529 16, /* bitsize */ 530 TRUE, /* pc_relative */ 531 7, /* bitpos */ 532 complain_overflow_dont,/* complain_on_overflow */ 533 bfd_elf_generic_reloc, /* special_function */ 534 "R_C6000_PCR_H16", /* name */ 535 FALSE, /* partial_inplace */ 536 0, /* src_mask */ 537 0x007fff80, /* dst_mask */ 538 TRUE), /* pcrel_offset */ 539 HOWTO (R_C6000_PCR_L16, /* type */ 540 0, /* rightshift */ 541 2, /* size (0 = byte, 1 = short, 2 = long) */ 542 16, /* bitsize */ 543 TRUE, /* pc_relative */ 544 7, /* bitpos */ 545 complain_overflow_dont,/* complain_on_overflow */ 546 bfd_elf_generic_reloc, /* special_function */ 547 "R_C6000_PCR_L16", /* name */ 548 FALSE, /* partial_inplace */ 549 0, /* src_mask */ 550 0x007fff80, /* dst_mask */ 551 TRUE), /* pcrel_offset */ 552 EMPTY_HOWTO (31), 553 EMPTY_HOWTO (32), 554 EMPTY_HOWTO (33), 555 EMPTY_HOWTO (34), 556 EMPTY_HOWTO (35), 557 EMPTY_HOWTO (36), 558 EMPTY_HOWTO (37), 559 EMPTY_HOWTO (38), 560 EMPTY_HOWTO (39), 561 EMPTY_HOWTO (40), 562 EMPTY_HOWTO (41), 563 EMPTY_HOWTO (42), 564 EMPTY_HOWTO (43), 565 EMPTY_HOWTO (44), 566 EMPTY_HOWTO (45), 567 EMPTY_HOWTO (46), 568 EMPTY_HOWTO (47), 569 EMPTY_HOWTO (48), 570 EMPTY_HOWTO (49), 571 EMPTY_HOWTO (50), 572 EMPTY_HOWTO (51), 573 EMPTY_HOWTO (52), 574 EMPTY_HOWTO (53), 575 EMPTY_HOWTO (54), 576 EMPTY_HOWTO (55), 577 EMPTY_HOWTO (56), 578 EMPTY_HOWTO (57), 579 EMPTY_HOWTO (58), 580 EMPTY_HOWTO (59), 581 EMPTY_HOWTO (60), 582 EMPTY_HOWTO (61), 583 EMPTY_HOWTO (62), 584 EMPTY_HOWTO (63), 585 EMPTY_HOWTO (64), 586 EMPTY_HOWTO (65), 587 EMPTY_HOWTO (66), 588 EMPTY_HOWTO (67), 589 EMPTY_HOWTO (68), 590 EMPTY_HOWTO (69), 591 EMPTY_HOWTO (70), 592 EMPTY_HOWTO (71), 593 EMPTY_HOWTO (72), 594 EMPTY_HOWTO (73), 595 EMPTY_HOWTO (74), 596 EMPTY_HOWTO (75), 597 EMPTY_HOWTO (76), 598 EMPTY_HOWTO (77), 599 EMPTY_HOWTO (78), 600 EMPTY_HOWTO (79), 601 EMPTY_HOWTO (80), 602 EMPTY_HOWTO (81), 603 EMPTY_HOWTO (82), 604 EMPTY_HOWTO (83), 605 EMPTY_HOWTO (84), 606 EMPTY_HOWTO (85), 607 EMPTY_HOWTO (86), 608 EMPTY_HOWTO (87), 609 EMPTY_HOWTO (88), 610 EMPTY_HOWTO (89), 611 EMPTY_HOWTO (90), 612 EMPTY_HOWTO (91), 613 EMPTY_HOWTO (92), 614 EMPTY_HOWTO (93), 615 EMPTY_HOWTO (94), 616 EMPTY_HOWTO (95), 617 EMPTY_HOWTO (96), 618 EMPTY_HOWTO (97), 619 EMPTY_HOWTO (98), 620 EMPTY_HOWTO (99), 621 EMPTY_HOWTO (100), 622 EMPTY_HOWTO (101), 623 EMPTY_HOWTO (102), 624 EMPTY_HOWTO (103), 625 EMPTY_HOWTO (104), 626 EMPTY_HOWTO (105), 627 EMPTY_HOWTO (106), 628 EMPTY_HOWTO (107), 629 EMPTY_HOWTO (108), 630 EMPTY_HOWTO (109), 631 EMPTY_HOWTO (110), 632 EMPTY_HOWTO (111), 633 EMPTY_HOWTO (112), 634 EMPTY_HOWTO (113), 635 EMPTY_HOWTO (114), 636 EMPTY_HOWTO (115), 637 EMPTY_HOWTO (116), 638 EMPTY_HOWTO (117), 639 EMPTY_HOWTO (118), 640 EMPTY_HOWTO (119), 641 EMPTY_HOWTO (120), 642 EMPTY_HOWTO (121), 643 EMPTY_HOWTO (122), 644 EMPTY_HOWTO (123), 645 EMPTY_HOWTO (124), 646 EMPTY_HOWTO (125), 647 EMPTY_HOWTO (126), 648 EMPTY_HOWTO (127), 649 EMPTY_HOWTO (128), 650 EMPTY_HOWTO (129), 651 EMPTY_HOWTO (130), 652 EMPTY_HOWTO (131), 653 EMPTY_HOWTO (132), 654 EMPTY_HOWTO (133), 655 EMPTY_HOWTO (134), 656 EMPTY_HOWTO (135), 657 EMPTY_HOWTO (136), 658 EMPTY_HOWTO (137), 659 EMPTY_HOWTO (138), 660 EMPTY_HOWTO (139), 661 EMPTY_HOWTO (140), 662 EMPTY_HOWTO (141), 663 EMPTY_HOWTO (142), 664 EMPTY_HOWTO (143), 665 EMPTY_HOWTO (144), 666 EMPTY_HOWTO (145), 667 EMPTY_HOWTO (146), 668 EMPTY_HOWTO (147), 669 EMPTY_HOWTO (148), 670 EMPTY_HOWTO (149), 671 EMPTY_HOWTO (150), 672 EMPTY_HOWTO (151), 673 EMPTY_HOWTO (152), 674 EMPTY_HOWTO (153), 675 EMPTY_HOWTO (154), 676 EMPTY_HOWTO (155), 677 EMPTY_HOWTO (156), 678 EMPTY_HOWTO (157), 679 EMPTY_HOWTO (158), 680 EMPTY_HOWTO (159), 681 EMPTY_HOWTO (160), 682 EMPTY_HOWTO (161), 683 EMPTY_HOWTO (162), 684 EMPTY_HOWTO (163), 685 EMPTY_HOWTO (164), 686 EMPTY_HOWTO (165), 687 EMPTY_HOWTO (166), 688 EMPTY_HOWTO (167), 689 EMPTY_HOWTO (168), 690 EMPTY_HOWTO (169), 691 EMPTY_HOWTO (170), 692 EMPTY_HOWTO (171), 693 EMPTY_HOWTO (172), 694 EMPTY_HOWTO (173), 695 EMPTY_HOWTO (174), 696 EMPTY_HOWTO (175), 697 EMPTY_HOWTO (176), 698 EMPTY_HOWTO (177), 699 EMPTY_HOWTO (178), 700 EMPTY_HOWTO (179), 701 EMPTY_HOWTO (180), 702 EMPTY_HOWTO (181), 703 EMPTY_HOWTO (182), 704 EMPTY_HOWTO (183), 705 EMPTY_HOWTO (184), 706 EMPTY_HOWTO (185), 707 EMPTY_HOWTO (186), 708 EMPTY_HOWTO (187), 709 EMPTY_HOWTO (188), 710 EMPTY_HOWTO (189), 711 EMPTY_HOWTO (190), 712 EMPTY_HOWTO (191), 713 EMPTY_HOWTO (192), 714 EMPTY_HOWTO (193), 715 EMPTY_HOWTO (194), 716 EMPTY_HOWTO (195), 717 EMPTY_HOWTO (196), 718 EMPTY_HOWTO (197), 719 EMPTY_HOWTO (198), 720 EMPTY_HOWTO (199), 721 EMPTY_HOWTO (200), 722 EMPTY_HOWTO (201), 723 EMPTY_HOWTO (202), 724 EMPTY_HOWTO (203), 725 EMPTY_HOWTO (204), 726 EMPTY_HOWTO (205), 727 EMPTY_HOWTO (206), 728 EMPTY_HOWTO (207), 729 EMPTY_HOWTO (208), 730 EMPTY_HOWTO (209), 731 EMPTY_HOWTO (210), 732 EMPTY_HOWTO (211), 733 EMPTY_HOWTO (212), 734 EMPTY_HOWTO (213), 735 EMPTY_HOWTO (214), 736 EMPTY_HOWTO (215), 737 EMPTY_HOWTO (216), 738 EMPTY_HOWTO (217), 739 EMPTY_HOWTO (218), 740 EMPTY_HOWTO (219), 741 EMPTY_HOWTO (220), 742 EMPTY_HOWTO (221), 743 EMPTY_HOWTO (222), 744 EMPTY_HOWTO (223), 745 EMPTY_HOWTO (224), 746 EMPTY_HOWTO (225), 747 EMPTY_HOWTO (226), 748 EMPTY_HOWTO (227), 749 EMPTY_HOWTO (228), 750 EMPTY_HOWTO (229), 751 EMPTY_HOWTO (230), 752 EMPTY_HOWTO (231), 753 EMPTY_HOWTO (232), 754 EMPTY_HOWTO (233), 755 EMPTY_HOWTO (234), 756 EMPTY_HOWTO (235), 757 EMPTY_HOWTO (236), 758 EMPTY_HOWTO (237), 759 EMPTY_HOWTO (238), 760 EMPTY_HOWTO (239), 761 EMPTY_HOWTO (240), 762 EMPTY_HOWTO (241), 763 EMPTY_HOWTO (242), 764 EMPTY_HOWTO (243), 765 EMPTY_HOWTO (244), 766 EMPTY_HOWTO (245), 767 EMPTY_HOWTO (246), 768 EMPTY_HOWTO (247), 769 EMPTY_HOWTO (248), 770 EMPTY_HOWTO (249), 771 EMPTY_HOWTO (250), 772 EMPTY_HOWTO (251), 773 EMPTY_HOWTO (252), 774 HOWTO (R_C6000_ALIGN, /* type */ 775 0, /* rightshift */ 776 0, /* size (0 = byte, 1 = short, 2 = long) */ 777 0, /* bitsize */ 778 FALSE, /* pc_relative */ 779 0, /* bitpos */ 780 complain_overflow_dont,/* complain_on_overflow */ 781 bfd_elf_generic_reloc, /* special_function */ 782 "R_C6000_ALIGN", /* name */ 783 FALSE, /* partial_inplace */ 784 0, /* src_mask */ 785 0, /* dst_mask */ 786 FALSE), /* pcrel_offset */ 787 HOWTO (R_C6000_FPHEAD, /* type */ 788 0, /* rightshift */ 789 0, /* size (0 = byte, 1 = short, 2 = long) */ 790 0, /* bitsize */ 791 FALSE, /* pc_relative */ 792 0, /* bitpos */ 793 complain_overflow_dont,/* complain_on_overflow */ 794 bfd_elf_generic_reloc, /* special_function */ 795 "R_C6000_FPHEAD", /* name */ 796 FALSE, /* partial_inplace */ 797 0, /* src_mask */ 798 0, /* dst_mask */ 799 FALSE), /* pcrel_offset */ 800 HOWTO (R_C6000_NOCMP, /* type */ 801 0, /* rightshift */ 802 0, /* size (0 = byte, 1 = short, 2 = long) */ 803 0, /* bitsize */ 804 FALSE, /* pc_relative */ 805 0, /* bitpos */ 806 complain_overflow_dont,/* complain_on_overflow */ 807 bfd_elf_generic_reloc, /* special_function */ 808 "R_C6000_NOCMP", /* name */ 809 FALSE, /* partial_inplace */ 810 0, /* src_mask */ 811 0, /* dst_mask */ 812 FALSE) /* pcrel_offset */ 813 }; 814 815 static reloc_howto_type elf32_tic6x_howto_table_rel[] = 816 { 817 HOWTO (R_C6000_NONE, /* type */ 818 0, /* rightshift */ 819 3, /* size (0 = byte, 1 = short, 2 = long) */ 820 0, /* bitsize */ 821 FALSE, /* pc_relative */ 822 0, /* bitpos */ 823 complain_overflow_dont,/* complain_on_overflow */ 824 bfd_elf_generic_reloc, /* special_function */ 825 "R_C6000_NONE", /* name */ 826 TRUE, /* partial_inplace */ 827 0, /* src_mask */ 828 0, /* dst_mask */ 829 FALSE), /* pcrel_offset */ 830 HOWTO (R_C6000_ABS32, /* type */ 831 0, /* rightshift */ 832 2, /* size (0 = byte, 1 = short, 2 = long) */ 833 32, /* bitsize */ 834 FALSE, /* pc_relative */ 835 0, /* bitpos */ 836 complain_overflow_dont,/* complain_on_overflow */ 837 bfd_elf_generic_reloc, /* special_function */ 838 "R_C6000_ABS32", /* name */ 839 TRUE, /* partial_inplace */ 840 0xffffffff, /* src_mask */ 841 0xffffffff, /* dst_mask */ 842 FALSE), /* pcrel_offset */ 843 HOWTO (R_C6000_ABS16, /* type */ 844 0, /* rightshift */ 845 1, /* size (0 = byte, 1 = short, 2 = long) */ 846 16, /* bitsize */ 847 FALSE, /* pc_relative */ 848 0, /* bitpos */ 849 complain_overflow_bitfield,/* complain_on_overflow */ 850 bfd_elf_generic_reloc, /* special_function */ 851 "R_C6000_ABS16", /* name */ 852 TRUE, /* partial_inplace */ 853 0x0000ffff, /* src_mask */ 854 0x0000ffff, /* dst_mask */ 855 FALSE), /* pcrel_offset */ 856 HOWTO (R_C6000_ABS8, /* type */ 857 0, /* rightshift */ 858 0, /* size (0 = byte, 1 = short, 2 = long) */ 859 8, /* bitsize */ 860 FALSE, /* pc_relative */ 861 0, /* bitpos */ 862 complain_overflow_bitfield,/* complain_on_overflow */ 863 bfd_elf_generic_reloc, /* special_function */ 864 "R_C6000_ABS8", /* name */ 865 TRUE, /* partial_inplace */ 866 0x000000ff, /* src_mask */ 867 0x000000ff, /* dst_mask */ 868 FALSE), /* pcrel_offset */ 869 HOWTO (R_C6000_PCR_S21, /* type */ 870 2, /* rightshift */ 871 2, /* size (0 = byte, 1 = short, 2 = long) */ 872 21, /* bitsize */ 873 TRUE, /* pc_relative */ 874 7, /* bitpos */ 875 complain_overflow_signed,/* complain_on_overflow */ 876 bfd_elf_generic_reloc, /* special_function */ 877 "R_C6000_PCR_S21", /* name */ 878 TRUE, /* partial_inplace */ 879 0x0fffff80, /* src_mask */ 880 0x0fffff80, /* dst_mask */ 881 TRUE), /* pcrel_offset */ 882 HOWTO (R_C6000_PCR_S12, /* type */ 883 2, /* rightshift */ 884 2, /* size (0 = byte, 1 = short, 2 = long) */ 885 12, /* bitsize */ 886 TRUE, /* pc_relative */ 887 16, /* bitpos */ 888 complain_overflow_signed,/* complain_on_overflow */ 889 bfd_elf_generic_reloc, /* special_function */ 890 "R_C6000_PCR_S12", /* name */ 891 TRUE, /* partial_inplace */ 892 0x0fff0000, /* src_mask */ 893 0x0fff0000, /* dst_mask */ 894 TRUE), /* pcrel_offset */ 895 HOWTO (R_C6000_PCR_S10, /* type */ 896 2, /* rightshift */ 897 2, /* size (0 = byte, 1 = short, 2 = long) */ 898 10, /* bitsize */ 899 TRUE, /* pc_relative */ 900 13, /* bitpos */ 901 complain_overflow_signed,/* complain_on_overflow */ 902 bfd_elf_generic_reloc, /* special_function */ 903 "R_C6000_PCR_S10", /* name */ 904 TRUE, /* partial_inplace */ 905 0x007fe000, /* src_mask */ 906 0x007fe000, /* dst_mask */ 907 TRUE), /* pcrel_offset */ 908 HOWTO (R_C6000_PCR_S7, /* type */ 909 2, /* rightshift */ 910 2, /* size (0 = byte, 1 = short, 2 = long) */ 911 7, /* bitsize */ 912 TRUE, /* pc_relative */ 913 16, /* bitpos */ 914 complain_overflow_signed,/* complain_on_overflow */ 915 bfd_elf_generic_reloc, /* special_function */ 916 "R_C6000_PCR_S7", /* name */ 917 TRUE, /* partial_inplace */ 918 0x007f0000, /* src_mask */ 919 0x007f0000, /* dst_mask */ 920 TRUE), /* pcrel_offset */ 921 HOWTO (R_C6000_ABS_S16, /* type */ 922 0, /* rightshift */ 923 2, /* size (0 = byte, 1 = short, 2 = long) */ 924 16, /* bitsize */ 925 FALSE, /* pc_relative */ 926 7, /* bitpos */ 927 complain_overflow_signed,/* complain_on_overflow */ 928 bfd_elf_generic_reloc, /* special_function */ 929 "R_C6000_ABS_S16", /* name */ 930 TRUE, /* partial_inplace */ 931 0x007fff80, /* src_mask */ 932 0x007fff80, /* dst_mask */ 933 FALSE), /* pcrel_offset */ 934 HOWTO (R_C6000_ABS_L16, /* type */ 935 0, /* rightshift */ 936 2, /* size (0 = byte, 1 = short, 2 = long) */ 937 16, /* bitsize */ 938 FALSE, /* pc_relative */ 939 7, /* bitpos */ 940 complain_overflow_dont,/* complain_on_overflow */ 941 bfd_elf_generic_reloc, /* special_function */ 942 "R_C6000_ABS_L16", /* name */ 943 TRUE, /* partial_inplace */ 944 0x007fff80, /* src_mask */ 945 0x007fff80, /* dst_mask */ 946 FALSE), /* pcrel_offset */ 947 EMPTY_HOWTO (R_C6000_ABS_H16), 948 HOWTO (R_C6000_SBR_U15_B, /* type */ 949 0, /* rightshift */ 950 2, /* size (0 = byte, 1 = short, 2 = long) */ 951 15, /* bitsize */ 952 FALSE, /* pc_relative */ 953 8, /* bitpos */ 954 complain_overflow_unsigned,/* complain_on_overflow */ 955 bfd_elf_generic_reloc, /* special_function */ 956 "R_C6000_SBR_U15_B", /* name */ 957 TRUE, /* partial_inplace */ 958 0x007fff00, /* src_mask */ 959 0x007fff00, /* dst_mask */ 960 FALSE), /* pcrel_offset */ 961 HOWTO (R_C6000_SBR_U15_H, /* type */ 962 1, /* rightshift */ 963 2, /* size (0 = byte, 1 = short, 2 = long) */ 964 15, /* bitsize */ 965 FALSE, /* pc_relative */ 966 8, /* bitpos */ 967 complain_overflow_unsigned,/* complain_on_overflow */ 968 bfd_elf_generic_reloc, /* special_function */ 969 "R_C6000_SBR_U15_H", /* name */ 970 TRUE, /* partial_inplace */ 971 0x007fff00, /* src_mask */ 972 0x007fff00, /* dst_mask */ 973 FALSE), /* pcrel_offset */ 974 HOWTO (R_C6000_SBR_U15_W, /* type */ 975 2, /* rightshift */ 976 2, /* size (0 = byte, 1 = short, 2 = long) */ 977 15, /* bitsize */ 978 FALSE, /* pc_relative */ 979 8, /* bitpos */ 980 complain_overflow_unsigned,/* complain_on_overflow */ 981 bfd_elf_generic_reloc, /* special_function */ 982 "R_C6000_SBR_U15_W", /* name */ 983 TRUE, /* partial_inplace */ 984 0x007fff00, /* src_mask */ 985 0x007fff00, /* dst_mask */ 986 FALSE), /* pcrel_offset */ 987 HOWTO (R_C6000_SBR_S16, /* type */ 988 0, /* rightshift */ 989 2, /* size (0 = byte, 1 = short, 2 = long) */ 990 16, /* bitsize */ 991 FALSE, /* pc_relative */ 992 7, /* bitpos */ 993 complain_overflow_signed,/* complain_on_overflow */ 994 bfd_elf_generic_reloc, /* special_function */ 995 "R_C6000_SBR_S16", /* name */ 996 TRUE, /* partial_inplace */ 997 0x007fff80, /* src_mask */ 998 0x007fff80, /* dst_mask */ 999 FALSE), /* pcrel_offset */ 1000 HOWTO (R_C6000_SBR_L16_B, /* type */ 1001 0, /* rightshift */ 1002 2, /* size (0 = byte, 1 = short, 2 = long) */ 1003 16, /* bitsize */ 1004 FALSE, /* pc_relative */ 1005 7, /* bitpos */ 1006 complain_overflow_dont,/* complain_on_overflow */ 1007 bfd_elf_generic_reloc, /* special_function */ 1008 "R_C6000_SBR_L16_B", /* name */ 1009 TRUE, /* partial_inplace */ 1010 0x007fff80, /* src_mask */ 1011 0x007fff80, /* dst_mask */ 1012 FALSE), /* pcrel_offset */ 1013 HOWTO (R_C6000_SBR_L16_H, /* type */ 1014 1, /* rightshift */ 1015 2, /* size (0 = byte, 1 = short, 2 = long) */ 1016 16, /* bitsize */ 1017 FALSE, /* pc_relative */ 1018 7, /* bitpos */ 1019 complain_overflow_dont,/* complain_on_overflow */ 1020 bfd_elf_generic_reloc, /* special_function */ 1021 "R_C6000_SBR_L16_H", /* name */ 1022 TRUE, /* partial_inplace */ 1023 0x007fff80, /* src_mask */ 1024 0x007fff80, /* dst_mask */ 1025 FALSE), /* pcrel_offset */ 1026 HOWTO (R_C6000_SBR_L16_W, /* type */ 1027 2, /* rightshift */ 1028 2, /* size (0 = byte, 1 = short, 2 = long) */ 1029 16, /* bitsize */ 1030 FALSE, /* pc_relative */ 1031 7, /* bitpos */ 1032 complain_overflow_dont,/* complain_on_overflow */ 1033 bfd_elf_generic_reloc, /* special_function */ 1034 "R_C6000_SBR_L16_W", /* name */ 1035 TRUE, /* partial_inplace */ 1036 0x007fff80, /* src_mask */ 1037 0x007fff80, /* dst_mask */ 1038 FALSE), /* pcrel_offset */ 1039 EMPTY_HOWTO (R_C6000_SBR_H16_B), 1040 EMPTY_HOWTO (R_C6000_SBR_H16_H), 1041 EMPTY_HOWTO (R_C6000_SBR_H16_W), 1042 HOWTO (R_C6000_SBR_GOT_U15_W, /* type */ 1043 2, /* rightshift */ 1044 2, /* size (0 = byte, 1 = short, 2 = long) */ 1045 15, /* bitsize */ 1046 FALSE, /* pc_relative */ 1047 8, /* bitpos */ 1048 complain_overflow_unsigned,/* complain_on_overflow */ 1049 bfd_elf_generic_reloc, /* special_function */ 1050 "R_C6000_SBR_GOT_U15_W",/* name */ 1051 TRUE, /* partial_inplace */ 1052 0x007fff00, /* src_mask */ 1053 0x007fff00, /* dst_mask */ 1054 FALSE), /* pcrel_offset */ 1055 HOWTO (R_C6000_SBR_GOT_L16_W, /* type */ 1056 2, /* rightshift */ 1057 2, /* size (0 = byte, 1 = short, 2 = long) */ 1058 16, /* bitsize */ 1059 FALSE, /* pc_relative */ 1060 7, /* bitpos */ 1061 complain_overflow_dont,/* complain_on_overflow */ 1062 bfd_elf_generic_reloc, /* special_function */ 1063 "R_C6000_SBR_GOT_L16_W",/* name */ 1064 TRUE, /* partial_inplace */ 1065 0x007fff80, /* src_mask */ 1066 0x007fff80, /* dst_mask */ 1067 FALSE), /* pcrel_offset */ 1068 EMPTY_HOWTO (R_C6000_SBR_GOT_H16_W), 1069 HOWTO (R_C6000_DSBT_INDEX, /* type */ 1070 0, /* rightshift */ 1071 2, /* size (0 = byte, 1 = short, 2 = long) */ 1072 15, /* bitsize */ 1073 FALSE, /* pc_relative */ 1074 8, /* bitpos */ 1075 complain_overflow_unsigned,/* complain_on_overflow */ 1076 bfd_elf_generic_reloc, /* special_function */ 1077 "R_C6000_DSBT_INDEX", /* name */ 1078 TRUE, /* partial_inplace */ 1079 0, /* src_mask */ 1080 0x007fff00, /* dst_mask */ 1081 FALSE), /* pcrel_offset */ 1082 HOWTO (R_C6000_PREL31, /* type */ 1083 1, /* rightshift */ 1084 2, /* size (0 = byte, 1 = short, 2 = long) */ 1085 31, /* bitsize */ 1086 TRUE, /* pc_relative */ 1087 0, /* bitpos */ 1088 complain_overflow_dont,/* complain_on_overflow */ 1089 bfd_elf_generic_reloc, /* special_function */ 1090 "R_C6000_PREL31", /* name */ 1091 TRUE, /* partial_inplace */ 1092 0, /* src_mask */ 1093 0x7fffffff, /* dst_mask */ 1094 TRUE), /* pcrel_offset */ 1095 HOWTO (R_C6000_COPY, /* type */ 1096 0, /* rightshift */ 1097 2, /* size (0 = byte, 1 = short, 2 = long) */ 1098 32, /* bitsize */ 1099 FALSE, /* pc_relative */ 1100 0, /* bitpos */ 1101 complain_overflow_dont,/* complain_on_overflow */ 1102 bfd_elf_generic_reloc, /* special_function */ 1103 "R_C6000_COPY", /* name */ 1104 TRUE, /* partial_inplace */ 1105 0, /* src_mask */ 1106 0xffffffff, /* dst_mask */ 1107 FALSE), /* pcrel_offset */ 1108 HOWTO (R_C6000_JUMP_SLOT, /* type */ 1109 0, /* rightshift */ 1110 2, /* size (0 = byte, 1 = short, 2 = long) */ 1111 32, /* bitsize */ 1112 FALSE, /* pc_relative */ 1113 0, /* bitpos */ 1114 complain_overflow_dont,/* complain_on_overflow */ 1115 bfd_elf_generic_reloc, /* special_function */ 1116 "R_C6000_JUMP_SLOT", /* name */ 1117 FALSE, /* partial_inplace */ 1118 0, /* src_mask */ 1119 0xffffffff, /* dst_mask */ 1120 FALSE), /* pcrel_offset */ 1121 HOWTO (R_C6000_EHTYPE, /* type */ 1122 0, /* rightshift */ 1123 2, /* size (0 = byte, 1 = short, 2 = long) */ 1124 32, /* bitsize */ 1125 FALSE, /* pc_relative */ 1126 0, /* bitpos */ 1127 complain_overflow_dont,/* complain_on_overflow */ 1128 bfd_elf_generic_reloc, /* special_function */ 1129 "R_C6000_EHTYPE", /* name */ 1130 FALSE, /* partial_inplace */ 1131 0, /* src_mask */ 1132 0xffffffff, /* dst_mask */ 1133 FALSE), /* pcrel_offset */ 1134 EMPTY_HOWTO (R_C6000_PCR_H16), 1135 EMPTY_HOWTO (R_C6000_PCR_L16), 1136 EMPTY_HOWTO (31), 1137 EMPTY_HOWTO (32), 1138 EMPTY_HOWTO (33), 1139 EMPTY_HOWTO (34), 1140 EMPTY_HOWTO (35), 1141 EMPTY_HOWTO (36), 1142 EMPTY_HOWTO (37), 1143 EMPTY_HOWTO (38), 1144 EMPTY_HOWTO (39), 1145 EMPTY_HOWTO (40), 1146 EMPTY_HOWTO (41), 1147 EMPTY_HOWTO (42), 1148 EMPTY_HOWTO (43), 1149 EMPTY_HOWTO (44), 1150 EMPTY_HOWTO (45), 1151 EMPTY_HOWTO (46), 1152 EMPTY_HOWTO (47), 1153 EMPTY_HOWTO (48), 1154 EMPTY_HOWTO (49), 1155 EMPTY_HOWTO (50), 1156 EMPTY_HOWTO (51), 1157 EMPTY_HOWTO (52), 1158 EMPTY_HOWTO (53), 1159 EMPTY_HOWTO (54), 1160 EMPTY_HOWTO (55), 1161 EMPTY_HOWTO (56), 1162 EMPTY_HOWTO (57), 1163 EMPTY_HOWTO (58), 1164 EMPTY_HOWTO (59), 1165 EMPTY_HOWTO (60), 1166 EMPTY_HOWTO (61), 1167 EMPTY_HOWTO (62), 1168 EMPTY_HOWTO (63), 1169 EMPTY_HOWTO (64), 1170 EMPTY_HOWTO (65), 1171 EMPTY_HOWTO (66), 1172 EMPTY_HOWTO (67), 1173 EMPTY_HOWTO (68), 1174 EMPTY_HOWTO (69), 1175 EMPTY_HOWTO (70), 1176 EMPTY_HOWTO (71), 1177 EMPTY_HOWTO (72), 1178 EMPTY_HOWTO (73), 1179 EMPTY_HOWTO (74), 1180 EMPTY_HOWTO (75), 1181 EMPTY_HOWTO (76), 1182 EMPTY_HOWTO (77), 1183 EMPTY_HOWTO (78), 1184 EMPTY_HOWTO (79), 1185 EMPTY_HOWTO (80), 1186 EMPTY_HOWTO (81), 1187 EMPTY_HOWTO (82), 1188 EMPTY_HOWTO (83), 1189 EMPTY_HOWTO (84), 1190 EMPTY_HOWTO (85), 1191 EMPTY_HOWTO (86), 1192 EMPTY_HOWTO (87), 1193 EMPTY_HOWTO (88), 1194 EMPTY_HOWTO (89), 1195 EMPTY_HOWTO (90), 1196 EMPTY_HOWTO (91), 1197 EMPTY_HOWTO (92), 1198 EMPTY_HOWTO (93), 1199 EMPTY_HOWTO (94), 1200 EMPTY_HOWTO (95), 1201 EMPTY_HOWTO (96), 1202 EMPTY_HOWTO (97), 1203 EMPTY_HOWTO (98), 1204 EMPTY_HOWTO (99), 1205 EMPTY_HOWTO (100), 1206 EMPTY_HOWTO (101), 1207 EMPTY_HOWTO (102), 1208 EMPTY_HOWTO (103), 1209 EMPTY_HOWTO (104), 1210 EMPTY_HOWTO (105), 1211 EMPTY_HOWTO (106), 1212 EMPTY_HOWTO (107), 1213 EMPTY_HOWTO (108), 1214 EMPTY_HOWTO (109), 1215 EMPTY_HOWTO (110), 1216 EMPTY_HOWTO (111), 1217 EMPTY_HOWTO (112), 1218 EMPTY_HOWTO (113), 1219 EMPTY_HOWTO (114), 1220 EMPTY_HOWTO (115), 1221 EMPTY_HOWTO (116), 1222 EMPTY_HOWTO (117), 1223 EMPTY_HOWTO (118), 1224 EMPTY_HOWTO (119), 1225 EMPTY_HOWTO (120), 1226 EMPTY_HOWTO (121), 1227 EMPTY_HOWTO (122), 1228 EMPTY_HOWTO (123), 1229 EMPTY_HOWTO (124), 1230 EMPTY_HOWTO (125), 1231 EMPTY_HOWTO (126), 1232 EMPTY_HOWTO (127), 1233 EMPTY_HOWTO (128), 1234 EMPTY_HOWTO (129), 1235 EMPTY_HOWTO (130), 1236 EMPTY_HOWTO (131), 1237 EMPTY_HOWTO (132), 1238 EMPTY_HOWTO (133), 1239 EMPTY_HOWTO (134), 1240 EMPTY_HOWTO (135), 1241 EMPTY_HOWTO (136), 1242 EMPTY_HOWTO (137), 1243 EMPTY_HOWTO (138), 1244 EMPTY_HOWTO (139), 1245 EMPTY_HOWTO (140), 1246 EMPTY_HOWTO (141), 1247 EMPTY_HOWTO (142), 1248 EMPTY_HOWTO (143), 1249 EMPTY_HOWTO (144), 1250 EMPTY_HOWTO (145), 1251 EMPTY_HOWTO (146), 1252 EMPTY_HOWTO (147), 1253 EMPTY_HOWTO (148), 1254 EMPTY_HOWTO (149), 1255 EMPTY_HOWTO (150), 1256 EMPTY_HOWTO (151), 1257 EMPTY_HOWTO (152), 1258 EMPTY_HOWTO (153), 1259 EMPTY_HOWTO (154), 1260 EMPTY_HOWTO (155), 1261 EMPTY_HOWTO (156), 1262 EMPTY_HOWTO (157), 1263 EMPTY_HOWTO (158), 1264 EMPTY_HOWTO (159), 1265 EMPTY_HOWTO (160), 1266 EMPTY_HOWTO (161), 1267 EMPTY_HOWTO (162), 1268 EMPTY_HOWTO (163), 1269 EMPTY_HOWTO (164), 1270 EMPTY_HOWTO (165), 1271 EMPTY_HOWTO (166), 1272 EMPTY_HOWTO (167), 1273 EMPTY_HOWTO (168), 1274 EMPTY_HOWTO (169), 1275 EMPTY_HOWTO (170), 1276 EMPTY_HOWTO (171), 1277 EMPTY_HOWTO (172), 1278 EMPTY_HOWTO (173), 1279 EMPTY_HOWTO (174), 1280 EMPTY_HOWTO (175), 1281 EMPTY_HOWTO (176), 1282 EMPTY_HOWTO (177), 1283 EMPTY_HOWTO (178), 1284 EMPTY_HOWTO (179), 1285 EMPTY_HOWTO (180), 1286 EMPTY_HOWTO (181), 1287 EMPTY_HOWTO (182), 1288 EMPTY_HOWTO (183), 1289 EMPTY_HOWTO (184), 1290 EMPTY_HOWTO (185), 1291 EMPTY_HOWTO (186), 1292 EMPTY_HOWTO (187), 1293 EMPTY_HOWTO (188), 1294 EMPTY_HOWTO (189), 1295 EMPTY_HOWTO (190), 1296 EMPTY_HOWTO (191), 1297 EMPTY_HOWTO (192), 1298 EMPTY_HOWTO (193), 1299 EMPTY_HOWTO (194), 1300 EMPTY_HOWTO (195), 1301 EMPTY_HOWTO (196), 1302 EMPTY_HOWTO (197), 1303 EMPTY_HOWTO (198), 1304 EMPTY_HOWTO (199), 1305 EMPTY_HOWTO (200), 1306 EMPTY_HOWTO (201), 1307 EMPTY_HOWTO (202), 1308 EMPTY_HOWTO (203), 1309 EMPTY_HOWTO (204), 1310 EMPTY_HOWTO (205), 1311 EMPTY_HOWTO (206), 1312 EMPTY_HOWTO (207), 1313 EMPTY_HOWTO (208), 1314 EMPTY_HOWTO (209), 1315 EMPTY_HOWTO (210), 1316 EMPTY_HOWTO (211), 1317 EMPTY_HOWTO (212), 1318 EMPTY_HOWTO (213), 1319 EMPTY_HOWTO (214), 1320 EMPTY_HOWTO (215), 1321 EMPTY_HOWTO (216), 1322 EMPTY_HOWTO (217), 1323 EMPTY_HOWTO (218), 1324 EMPTY_HOWTO (219), 1325 EMPTY_HOWTO (220), 1326 EMPTY_HOWTO (221), 1327 EMPTY_HOWTO (222), 1328 EMPTY_HOWTO (223), 1329 EMPTY_HOWTO (224), 1330 EMPTY_HOWTO (225), 1331 EMPTY_HOWTO (226), 1332 EMPTY_HOWTO (227), 1333 EMPTY_HOWTO (228), 1334 EMPTY_HOWTO (229), 1335 EMPTY_HOWTO (230), 1336 EMPTY_HOWTO (231), 1337 EMPTY_HOWTO (232), 1338 EMPTY_HOWTO (233), 1339 EMPTY_HOWTO (234), 1340 EMPTY_HOWTO (235), 1341 EMPTY_HOWTO (236), 1342 EMPTY_HOWTO (237), 1343 EMPTY_HOWTO (238), 1344 EMPTY_HOWTO (239), 1345 EMPTY_HOWTO (240), 1346 EMPTY_HOWTO (241), 1347 EMPTY_HOWTO (242), 1348 EMPTY_HOWTO (243), 1349 EMPTY_HOWTO (244), 1350 EMPTY_HOWTO (245), 1351 EMPTY_HOWTO (246), 1352 EMPTY_HOWTO (247), 1353 EMPTY_HOWTO (248), 1354 EMPTY_HOWTO (249), 1355 EMPTY_HOWTO (250), 1356 EMPTY_HOWTO (251), 1357 EMPTY_HOWTO (252), 1358 HOWTO (R_C6000_ALIGN, /* type */ 1359 0, /* rightshift */ 1360 0, /* size (0 = byte, 1 = short, 2 = long) */ 1361 0, /* bitsize */ 1362 FALSE, /* pc_relative */ 1363 0, /* bitpos */ 1364 complain_overflow_dont,/* complain_on_overflow */ 1365 bfd_elf_generic_reloc, /* special_function */ 1366 "R_C6000_ALIGN", /* name */ 1367 TRUE, /* partial_inplace */ 1368 0, /* src_mask */ 1369 0, /* dst_mask */ 1370 FALSE), /* pcrel_offset */ 1371 HOWTO (R_C6000_FPHEAD, /* type */ 1372 0, /* rightshift */ 1373 0, /* size (0 = byte, 1 = short, 2 = long) */ 1374 0, /* bitsize */ 1375 FALSE, /* pc_relative */ 1376 0, /* bitpos */ 1377 complain_overflow_dont,/* complain_on_overflow */ 1378 bfd_elf_generic_reloc, /* special_function */ 1379 "R_C6000_FPHEAD", /* name */ 1380 TRUE, /* partial_inplace */ 1381 0, /* src_mask */ 1382 0, /* dst_mask */ 1383 FALSE), /* pcrel_offset */ 1384 HOWTO (R_C6000_NOCMP, /* type */ 1385 0, /* rightshift */ 1386 0, /* size (0 = byte, 1 = short, 2 = long) */ 1387 0, /* bitsize */ 1388 FALSE, /* pc_relative */ 1389 0, /* bitpos */ 1390 complain_overflow_dont,/* complain_on_overflow */ 1391 bfd_elf_generic_reloc, /* special_function */ 1392 "R_C6000_NOCMP", /* name */ 1393 TRUE, /* partial_inplace */ 1394 0, /* src_mask */ 1395 0, /* dst_mask */ 1396 FALSE) /* pcrel_offset */ 1397 }; 1398 1399 /* Map BFD relocations to ELF relocations. */ 1400 1401 typedef struct 1402 { 1403 bfd_reloc_code_real_type bfd_reloc_val; 1404 enum elf_tic6x_reloc_type elf_reloc_val; 1405 } tic6x_reloc_map; 1406 1407 static const tic6x_reloc_map elf32_tic6x_reloc_map[] = 1408 { 1409 { BFD_RELOC_NONE, R_C6000_NONE }, 1410 { BFD_RELOC_32, R_C6000_ABS32 }, 1411 { BFD_RELOC_16, R_C6000_ABS16 }, 1412 { BFD_RELOC_8, R_C6000_ABS8 }, 1413 { BFD_RELOC_C6000_PCR_S21, R_C6000_PCR_S21 }, 1414 { BFD_RELOC_C6000_PCR_S12, R_C6000_PCR_S12 }, 1415 { BFD_RELOC_C6000_PCR_S10, R_C6000_PCR_S10 }, 1416 { BFD_RELOC_C6000_PCR_S7, R_C6000_PCR_S7 }, 1417 { BFD_RELOC_C6000_ABS_S16, R_C6000_ABS_S16 }, 1418 { BFD_RELOC_C6000_ABS_L16, R_C6000_ABS_L16 }, 1419 { BFD_RELOC_C6000_ABS_H16, R_C6000_ABS_H16 }, 1420 { BFD_RELOC_C6000_SBR_U15_B, R_C6000_SBR_U15_B }, 1421 { BFD_RELOC_C6000_SBR_U15_H, R_C6000_SBR_U15_H }, 1422 { BFD_RELOC_C6000_SBR_U15_W, R_C6000_SBR_U15_W }, 1423 { BFD_RELOC_C6000_SBR_S16, R_C6000_SBR_S16 }, 1424 { BFD_RELOC_C6000_SBR_L16_B, R_C6000_SBR_L16_B }, 1425 { BFD_RELOC_C6000_SBR_L16_H, R_C6000_SBR_L16_H }, 1426 { BFD_RELOC_C6000_SBR_L16_W, R_C6000_SBR_L16_W }, 1427 { BFD_RELOC_C6000_SBR_H16_B, R_C6000_SBR_H16_B }, 1428 { BFD_RELOC_C6000_SBR_H16_H, R_C6000_SBR_H16_H }, 1429 { BFD_RELOC_C6000_SBR_H16_W, R_C6000_SBR_H16_W }, 1430 { BFD_RELOC_C6000_SBR_GOT_U15_W, R_C6000_SBR_GOT_U15_W }, 1431 { BFD_RELOC_C6000_SBR_GOT_L16_W, R_C6000_SBR_GOT_L16_W }, 1432 { BFD_RELOC_C6000_SBR_GOT_H16_W, R_C6000_SBR_GOT_H16_W }, 1433 { BFD_RELOC_C6000_DSBT_INDEX, R_C6000_DSBT_INDEX }, 1434 { BFD_RELOC_C6000_PREL31, R_C6000_PREL31 }, 1435 { BFD_RELOC_C6000_COPY, R_C6000_COPY }, 1436 { BFD_RELOC_C6000_JUMP_SLOT, R_C6000_JUMP_SLOT }, 1437 { BFD_RELOC_C6000_EHTYPE, R_C6000_EHTYPE }, 1438 { BFD_RELOC_C6000_PCR_H16, R_C6000_PCR_H16 }, 1439 { BFD_RELOC_C6000_PCR_L16, R_C6000_PCR_L16 }, 1440 { BFD_RELOC_C6000_ALIGN, R_C6000_ALIGN }, 1441 { BFD_RELOC_C6000_FPHEAD, R_C6000_FPHEAD }, 1442 { BFD_RELOC_C6000_NOCMP, R_C6000_NOCMP } 1443 }; 1444 1445 static reloc_howto_type * 1446 elf32_tic6x_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code) 1447 { 1448 unsigned int i; 1449 1450 for (i = 0; i < ARRAY_SIZE (elf32_tic6x_reloc_map); i++) 1451 if (elf32_tic6x_reloc_map[i].bfd_reloc_val == code) 1452 { 1453 enum elf_tic6x_reloc_type elf_reloc_val; 1454 reloc_howto_type *howto; 1455 1456 elf_reloc_val = elf32_tic6x_reloc_map[i].elf_reloc_val; 1457 if (elf32_tic6x_tdata (abfd)->use_rela_p) 1458 howto = &elf32_tic6x_howto_table[elf_reloc_val]; 1459 else 1460 howto = &elf32_tic6x_howto_table_rel[elf_reloc_val]; 1461 1462 /* Some relocations are RELA-only; do not return them for 1463 REL. */ 1464 if (howto->name == NULL) 1465 howto = NULL; 1466 1467 return howto; 1468 } 1469 1470 return NULL; 1471 } 1472 1473 static reloc_howto_type * 1474 elf32_tic6x_reloc_name_lookup (bfd *abfd, const char *r_name) 1475 { 1476 if (elf32_tic6x_tdata (abfd)->use_rela_p) 1477 { 1478 unsigned int i; 1479 1480 for (i = 0; i < ARRAY_SIZE (elf32_tic6x_howto_table); i++) 1481 if (elf32_tic6x_howto_table[i].name != NULL 1482 && strcasecmp (elf32_tic6x_howto_table[i].name, r_name) == 0) 1483 return &elf32_tic6x_howto_table[i]; 1484 } 1485 else 1486 { 1487 unsigned int i; 1488 1489 for (i = 0; i < ARRAY_SIZE (elf32_tic6x_howto_table_rel); i++) 1490 if (elf32_tic6x_howto_table_rel[i].name != NULL 1491 && strcasecmp (elf32_tic6x_howto_table_rel[i].name, r_name) == 0) 1492 return &elf32_tic6x_howto_table_rel[i]; 1493 } 1494 1495 return NULL; 1496 } 1497 1498 static void 1499 elf32_tic6x_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc, 1500 Elf_Internal_Rela *elf_reloc) 1501 { 1502 unsigned int r_type; 1503 1504 r_type = ELF32_R_TYPE (elf_reloc->r_info); 1505 if (r_type >= ARRAY_SIZE (elf32_tic6x_howto_table)) 1506 bfd_reloc->howto = NULL; 1507 else 1508 bfd_reloc->howto = &elf32_tic6x_howto_table[r_type]; 1509 } 1510 1511 static void 1512 elf32_tic6x_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc, 1513 Elf_Internal_Rela *elf_reloc) 1514 { 1515 unsigned int r_type; 1516 1517 r_type = ELF32_R_TYPE (elf_reloc->r_info); 1518 if (r_type >= ARRAY_SIZE (elf32_tic6x_howto_table_rel)) 1519 bfd_reloc->howto = NULL; 1520 else 1521 bfd_reloc->howto = &elf32_tic6x_howto_table_rel[r_type]; 1522 } 1523 1524 void 1525 elf32_tic6x_set_use_rela_p (bfd *abfd, bfd_boolean use_rela_p) 1526 { 1527 elf32_tic6x_tdata (abfd)->use_rela_p = use_rela_p; 1528 } 1529 1530 /* Create an entry in a C6X ELF linker hash table. */ 1531 1532 static struct bfd_hash_entry * 1533 elf32_tic6x_link_hash_newfunc (struct bfd_hash_entry *entry, 1534 struct bfd_hash_table *table, 1535 const char *string) 1536 { 1537 /* Allocate the structure if it has not already been allocated by a 1538 subclass. */ 1539 if (entry == NULL) 1540 { 1541 entry = bfd_hash_allocate (table, 1542 sizeof (struct elf32_tic6x_link_hash_entry)); 1543 if (entry == NULL) 1544 return entry; 1545 } 1546 1547 /* Call the allocation method of the superclass. */ 1548 entry = _bfd_elf_link_hash_newfunc (entry, table, string); 1549 if (entry != NULL) 1550 { 1551 struct elf32_tic6x_link_hash_entry *eh; 1552 1553 eh = (struct elf32_tic6x_link_hash_entry *) entry; 1554 eh->dyn_relocs = NULL; 1555 } 1556 1557 return entry; 1558 } 1559 1560 /* Create a C6X ELF linker hash table. */ 1561 1562 static struct bfd_link_hash_table * 1563 elf32_tic6x_link_hash_table_create (bfd *abfd) 1564 { 1565 struct elf32_tic6x_link_hash_table *ret; 1566 bfd_size_type amt = sizeof (struct elf32_tic6x_link_hash_table); 1567 1568 ret = bfd_zmalloc (amt); 1569 if (ret == NULL) 1570 return NULL; 1571 1572 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, 1573 elf32_tic6x_link_hash_newfunc, 1574 sizeof (struct elf32_tic6x_link_hash_entry), 1575 TIC6X_ELF_DATA)) 1576 { 1577 free (ret); 1578 return NULL; 1579 } 1580 1581 ret->obfd = abfd; 1582 ret->elf.is_relocatable_executable = 1; 1583 1584 return &ret->elf.root; 1585 } 1586 1587 static bfd_boolean 1588 elf32_tic6x_final_link (bfd *abfd, struct bfd_link_info *info) 1589 { 1590 if (bfd_link_pic (info)) 1591 { 1592 obj_attribute *out_attr; 1593 out_attr = elf_known_obj_attributes_proc (abfd); 1594 if (out_attr[Tag_ABI_PIC].i == 0) 1595 { 1596 _bfd_error_handler (_("warning: generating a shared library " 1597 "containing non-PIC code")); 1598 } 1599 if (out_attr[Tag_ABI_PID].i == 0) 1600 { 1601 _bfd_error_handler (_("warning: generating a shared library " 1602 "containing non-PID code")); 1603 } 1604 } 1605 /* Invoke the regular ELF backend linker to do all the work. */ 1606 if (!bfd_elf_final_link (abfd, info)) 1607 return FALSE; 1608 1609 return TRUE; 1610 } 1611 1612 /* Called to pass PARAMS to the backend. We store them in the hash table 1613 associated with INFO. */ 1614 1615 void 1616 elf32_tic6x_setup (struct bfd_link_info *info, 1617 struct elf32_tic6x_params *params) 1618 { 1619 struct elf32_tic6x_link_hash_table *htab = elf32_tic6x_hash_table (info); 1620 htab->params = *params; 1621 } 1622 1623 /* Determine if we're dealing with a DSBT object. */ 1624 1625 static bfd_boolean 1626 elf32_tic6x_using_dsbt (bfd *abfd) 1627 { 1628 return bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_PROC, 1629 Tag_ABI_DSBT); 1630 } 1631 1632 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got and .dsbt 1633 sections in DYNOBJ, and set up shortcuts to them in our hash 1634 table. */ 1635 1636 static bfd_boolean 1637 elf32_tic6x_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) 1638 { 1639 struct elf32_tic6x_link_hash_table *htab; 1640 flagword flags; 1641 1642 htab = elf32_tic6x_hash_table (info); 1643 if (htab == NULL) 1644 return FALSE; 1645 1646 if (!_bfd_elf_create_dynamic_sections (dynobj, info)) 1647 return FALSE; 1648 1649 /* Create .dsbt */ 1650 flags = (SEC_ALLOC | SEC_LOAD 1651 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); 1652 htab->dsbt = bfd_make_section_anyway_with_flags (dynobj, ".dsbt", 1653 flags); 1654 if (htab->dsbt == NULL 1655 || ! bfd_set_section_alignment (dynobj, htab->dsbt, 2) 1656 || ! bfd_set_section_alignment (dynobj, htab->elf.splt, 5)) 1657 return FALSE; 1658 1659 return TRUE; 1660 } 1661 1662 static bfd_boolean 1663 elf32_tic6x_mkobject (bfd *abfd) 1664 { 1665 bfd_boolean ret; 1666 1667 ret = bfd_elf_allocate_object (abfd, sizeof (struct elf32_tic6x_obj_tdata), 1668 TIC6X_ELF_DATA); 1669 if (ret) 1670 elf32_tic6x_set_use_rela_p (abfd, TRUE); 1671 return ret; 1672 } 1673 1674 /* Install relocation RELA into section SRELA, incrementing its 1675 reloc_count. */ 1676 1677 static void 1678 elf32_tic6x_install_rela (bfd *output_bfd, asection *srela, 1679 Elf_Internal_Rela *rela) 1680 { 1681 bfd_byte *loc; 1682 bfd_vma off = srela->reloc_count++ * sizeof (Elf32_External_Rela); 1683 loc = srela->contents + off; 1684 BFD_ASSERT (off < srela->size); 1685 bfd_elf32_swap_reloca_out (output_bfd, rela, loc); 1686 } 1687 1688 /* Create a dynamic reloc against the GOT at offset OFFSET. The contents 1689 of the GOT at this offset have been initialized with the relocation. */ 1690 1691 static void 1692 elf32_tic6x_make_got_dynreloc (bfd *output_bfd, 1693 struct elf32_tic6x_link_hash_table *htab, 1694 asection *sym_sec, bfd_vma offset) 1695 { 1696 asection *sgot = htab->elf.sgot; 1697 Elf_Internal_Rela outrel; 1698 int dynindx; 1699 1700 outrel.r_offset = sgot->output_section->vma + sgot->output_offset + offset; 1701 outrel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset); 1702 if (sym_sec && sym_sec->output_section 1703 && ! bfd_is_abs_section (sym_sec->output_section) 1704 && ! bfd_is_und_section (sym_sec->output_section)) 1705 { 1706 dynindx = elf_section_data (sym_sec->output_section)->dynindx; 1707 outrel.r_addend -= sym_sec->output_section->vma; 1708 } 1709 else 1710 { 1711 dynindx = 0; 1712 } 1713 outrel.r_info = ELF32_R_INFO (dynindx, R_C6000_ABS32); 1714 elf32_tic6x_install_rela (output_bfd, htab->elf.srelgot, &outrel); 1715 } 1716 1717 /* Finish up dynamic symbol handling. We set the contents of various 1718 dynamic sections here. */ 1719 1720 static bfd_boolean 1721 elf32_tic6x_finish_dynamic_symbol (bfd * output_bfd, 1722 struct bfd_link_info *info, 1723 struct elf_link_hash_entry *h, 1724 Elf_Internal_Sym * sym) 1725 { 1726 struct elf32_tic6x_link_hash_table *htab; 1727 1728 htab = elf32_tic6x_hash_table (info); 1729 1730 if (h->plt.offset != (bfd_vma) -1) 1731 { 1732 bfd_vma plt_index; 1733 bfd_vma got_section_offset, got_dp_offset, rela_offset; 1734 Elf_Internal_Rela rela; 1735 bfd_byte *loc; 1736 asection *plt, *gotplt, *relplt; 1737 const struct elf_backend_data *bed; 1738 1739 bed = get_elf_backend_data (output_bfd); 1740 1741 BFD_ASSERT (htab->elf.splt != NULL); 1742 plt = htab->elf.splt; 1743 gotplt = htab->elf.sgotplt; 1744 relplt = htab->elf.srelplt; 1745 1746 /* This symbol has an entry in the procedure linkage table. Set 1747 it up. */ 1748 1749 if ((h->dynindx == -1 1750 && !((h->forced_local || bfd_link_executable (info)) 1751 && h->def_regular 1752 && h->type == STT_GNU_IFUNC)) 1753 || plt == NULL 1754 || gotplt == NULL 1755 || relplt == NULL) 1756 abort (); 1757 1758 /* Get the index in the procedure linkage table which 1759 corresponds to this symbol. This is the index of this symbol 1760 in all the symbols for which we are making plt entries. The 1761 first entry in the procedure linkage table is reserved. 1762 1763 Get the offset into the .got table of the entry that 1764 corresponds to this function. Each .got entry is 4 bytes. 1765 The first three are reserved. 1766 1767 For static executables, we don't reserve anything. */ 1768 1769 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; 1770 got_section_offset = plt_index + bed->got_header_size / 4; 1771 got_dp_offset = got_section_offset + htab->params.dsbt_size; 1772 rela_offset = plt_index * sizeof (Elf32_External_Rela); 1773 1774 got_section_offset *= 4; 1775 1776 /* Fill in the entry in the procedure linkage table. */ 1777 1778 /* ldw .d2t2 *+B14($GOT(f)), b2 */ 1779 bfd_put_32 (output_bfd, got_dp_offset << 8 | 0x0100006e, 1780 plt->contents + h->plt.offset); 1781 /* mvk .s2 low(rela_offset), b0 */ 1782 bfd_put_32 (output_bfd, (rela_offset & 0xffff) << 7 | 0x0000002a, 1783 plt->contents + h->plt.offset + 4); 1784 /* mvkh .s2 high(rela_offset), b0 */ 1785 bfd_put_32 (output_bfd, ((rela_offset >> 16) & 0xffff) << 7 | 0x0000006a, 1786 plt->contents + h->plt.offset + 8); 1787 /* nop 2 */ 1788 bfd_put_32 (output_bfd, 0x00002000, 1789 plt->contents + h->plt.offset + 12); 1790 /* b .s2 b2 */ 1791 bfd_put_32 (output_bfd, 0x00080362, 1792 plt->contents + h->plt.offset + 16); 1793 /* nop 5 */ 1794 bfd_put_32 (output_bfd, 0x00008000, 1795 plt->contents + h->plt.offset + 20); 1796 1797 /* Fill in the entry in the global offset table. */ 1798 bfd_put_32 (output_bfd, 1799 (plt->output_section->vma + plt->output_offset), 1800 gotplt->contents + got_section_offset); 1801 1802 /* Fill in the entry in the .rel.plt section. */ 1803 rela.r_offset = (gotplt->output_section->vma 1804 + gotplt->output_offset 1805 + got_section_offset); 1806 rela.r_info = ELF32_R_INFO (h->dynindx, R_C6000_JUMP_SLOT); 1807 rela.r_addend = 0; 1808 loc = relplt->contents + rela_offset; 1809 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 1810 1811 if (!h->def_regular) 1812 { 1813 /* Mark the symbol as undefined, rather than as defined in 1814 the .plt section. */ 1815 sym->st_shndx = SHN_UNDEF; 1816 sym->st_value = 0; 1817 } 1818 } 1819 1820 if (h->got.offset != (bfd_vma) -1) 1821 { 1822 asection *sgot; 1823 asection *srela; 1824 1825 /* This symbol has an entry in the global offset table. 1826 Set it up. */ 1827 1828 sgot = htab->elf.sgot; 1829 srela = htab->elf.srelgot; 1830 BFD_ASSERT (sgot != NULL && srela != NULL); 1831 1832 /* If this is a -Bsymbolic link, and the symbol is defined 1833 locally, we just want to emit a RELATIVE reloc. Likewise if 1834 the symbol was forced to be local because of a version file. 1835 The entry in the global offset table will already have been 1836 initialized in the relocate_section function. */ 1837 if (bfd_link_pic (info) 1838 && (SYMBOLIC_BIND (info, h) 1839 || h->dynindx == -1 || h->forced_local) && h->def_regular) 1840 { 1841 asection *s = h->root.u.def.section; 1842 elf32_tic6x_make_got_dynreloc (output_bfd, htab, s, 1843 h->got.offset & ~(bfd_vma) 1); 1844 } 1845 else 1846 { 1847 Elf_Internal_Rela outrel; 1848 bfd_put_32 (output_bfd, (bfd_vma) 0, 1849 sgot->contents + (h->got.offset & ~(bfd_vma) 1)); 1850 outrel.r_offset = (sgot->output_section->vma 1851 + sgot->output_offset 1852 + (h->got.offset & ~(bfd_vma) 1)); 1853 outrel.r_info = ELF32_R_INFO (h->dynindx, R_C6000_ABS32); 1854 outrel.r_addend = 0; 1855 1856 elf32_tic6x_install_rela (output_bfd, srela, &outrel); 1857 } 1858 } 1859 1860 if (h->needs_copy) 1861 { 1862 Elf_Internal_Rela rel; 1863 asection *s; 1864 1865 /* This symbol needs a copy reloc. Set it up. */ 1866 1867 if (h->dynindx == -1 1868 || (h->root.type != bfd_link_hash_defined 1869 && h->root.type != bfd_link_hash_defweak) 1870 || htab->elf.srelbss == NULL 1871 || htab->elf.sreldynrelro == NULL) 1872 abort (); 1873 1874 rel.r_offset = (h->root.u.def.value 1875 + h->root.u.def.section->output_section->vma 1876 + h->root.u.def.section->output_offset); 1877 rel.r_info = ELF32_R_INFO (h->dynindx, R_C6000_COPY); 1878 rel.r_addend = 0; 1879 if (h->root.u.def.section == htab->elf.sdynrelro) 1880 s = htab->elf.sreldynrelro; 1881 else 1882 s = htab->elf.srelbss; 1883 1884 elf32_tic6x_install_rela (output_bfd, s, &rel); 1885 } 1886 1887 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ 1888 if (h == elf_hash_table (info)->hdynamic 1889 || h == elf_hash_table (info)->hgot) 1890 sym->st_shndx = SHN_ABS; 1891 1892 return TRUE; 1893 } 1894 1895 /* Unwinding tables are not referenced directly. This pass marks them as 1896 required if the corresponding code section is marked. */ 1897 1898 static bfd_boolean 1899 elf32_tic6x_gc_mark_extra_sections (struct bfd_link_info *info, 1900 elf_gc_mark_hook_fn gc_mark_hook) 1901 { 1902 bfd *sub; 1903 Elf_Internal_Shdr **elf_shdrp; 1904 bfd_boolean again; 1905 1906 _bfd_elf_gc_mark_extra_sections (info, gc_mark_hook); 1907 1908 /* Marking EH data may cause additional code sections to be marked, 1909 requiring multiple passes. */ 1910 again = TRUE; 1911 while (again) 1912 { 1913 again = FALSE; 1914 for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) 1915 { 1916 asection *o; 1917 1918 if (! is_tic6x_elf (sub)) 1919 continue; 1920 1921 elf_shdrp = elf_elfsections (sub); 1922 for (o = sub->sections; o != NULL; o = o->next) 1923 { 1924 Elf_Internal_Shdr *hdr; 1925 1926 hdr = &elf_section_data (o)->this_hdr; 1927 if (hdr->sh_type == SHT_C6000_UNWIND 1928 && hdr->sh_link 1929 && hdr->sh_link < elf_numsections (sub) 1930 && !o->gc_mark 1931 && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark) 1932 { 1933 again = TRUE; 1934 if (!_bfd_elf_gc_mark (info, o, gc_mark_hook)) 1935 return FALSE; 1936 } 1937 } 1938 } 1939 } 1940 1941 return TRUE; 1942 } 1943 1944 /* Return TRUE if this is an unwinding table index. */ 1945 1946 static bfd_boolean 1947 is_tic6x_elf_unwind_section_name (const char *name) 1948 { 1949 return (CONST_STRNEQ (name, ELF_STRING_C6000_unwind) 1950 || CONST_STRNEQ (name, ELF_STRING_C6000_unwind_once)); 1951 } 1952 1953 1954 /* Set the type and flags for an unwinding index table. We do this by 1955 the section name, which is a hack, but ought to work. */ 1956 1957 static bfd_boolean 1958 elf32_tic6x_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, 1959 Elf_Internal_Shdr *hdr, asection *sec) 1960 { 1961 const char * name; 1962 1963 name = bfd_get_section_name (abfd, sec); 1964 1965 if (is_tic6x_elf_unwind_section_name (name)) 1966 { 1967 hdr->sh_type = SHT_C6000_UNWIND; 1968 hdr->sh_flags |= SHF_LINK_ORDER; 1969 } 1970 1971 return TRUE; 1972 } 1973 1974 /* Update the got entry reference counts for the section being removed. */ 1975 1976 static bfd_boolean 1977 elf32_tic6x_gc_sweep_hook (bfd *abfd, 1978 struct bfd_link_info *info, 1979 asection *sec, 1980 const Elf_Internal_Rela *relocs) 1981 { 1982 struct elf32_tic6x_link_hash_table *htab; 1983 Elf_Internal_Shdr *symtab_hdr; 1984 struct elf_link_hash_entry **sym_hashes; 1985 bfd_signed_vma *local_got_refcounts; 1986 const Elf_Internal_Rela *rel, *relend; 1987 1988 if (bfd_link_relocatable (info)) 1989 return TRUE; 1990 1991 htab = elf32_tic6x_hash_table (info); 1992 if (htab == NULL) 1993 return FALSE; 1994 1995 elf_section_data (sec)->local_dynrel = NULL; 1996 1997 symtab_hdr = &elf_symtab_hdr (abfd); 1998 sym_hashes = elf_sym_hashes (abfd); 1999 local_got_refcounts = elf_local_got_refcounts (abfd); 2000 2001 relend = relocs + sec->reloc_count; 2002 for (rel = relocs; rel < relend; rel++) 2003 { 2004 unsigned long r_symndx; 2005 unsigned int r_type; 2006 struct elf_link_hash_entry *h = NULL; 2007 2008 r_symndx = ELF32_R_SYM (rel->r_info); 2009 if (r_symndx >= symtab_hdr->sh_info) 2010 { 2011 struct elf32_tic6x_link_hash_entry *eh; 2012 struct elf_dyn_relocs **pp; 2013 struct elf_dyn_relocs *p; 2014 2015 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 2016 while (h->root.type == bfd_link_hash_indirect 2017 || h->root.type == bfd_link_hash_warning) 2018 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2019 eh = (struct elf32_tic6x_link_hash_entry *) h; 2020 2021 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) 2022 if (p->sec == sec) 2023 { 2024 /* Everything must go for SEC. */ 2025 *pp = p->next; 2026 break; 2027 } 2028 } 2029 2030 r_type = ELF32_R_TYPE (rel->r_info); 2031 2032 switch (r_type) 2033 { 2034 case R_C6000_SBR_GOT_U15_W: 2035 case R_C6000_SBR_GOT_L16_W: 2036 case R_C6000_SBR_GOT_H16_W: 2037 case R_C6000_EHTYPE: 2038 if (h != NULL) 2039 { 2040 if (h->got.refcount > 0) 2041 h->got.refcount -= 1; 2042 } 2043 else if (local_got_refcounts != NULL) 2044 { 2045 if (local_got_refcounts[r_symndx] > 0) 2046 local_got_refcounts[r_symndx] -= 1; 2047 } 2048 break; 2049 2050 default: 2051 break; 2052 } 2053 } 2054 2055 return TRUE; 2056 } 2057 2058 /* Adjust a symbol defined by a dynamic object and referenced by a 2059 regular object. The current definition is in some section of the 2060 dynamic object, but we're not including those sections. We have to 2061 change the definition to something the rest of the link can 2062 understand. */ 2063 2064 static bfd_boolean 2065 elf32_tic6x_adjust_dynamic_symbol (struct bfd_link_info *info, 2066 struct elf_link_hash_entry *h) 2067 { 2068 struct elf32_tic6x_link_hash_table *htab; 2069 bfd *dynobj; 2070 asection *s, *srel; 2071 2072 dynobj = elf_hash_table (info)->dynobj; 2073 2074 /* Make sure we know what is going on here. */ 2075 BFD_ASSERT (dynobj != NULL 2076 && (h->needs_plt 2077 || h->u.weakdef != NULL 2078 || (h->def_dynamic && h->ref_regular && !h->def_regular))); 2079 2080 /* If this is a function, put it in the procedure linkage table. We 2081 will fill in the contents of the procedure linkage table later, 2082 when we know the address of the .got section. */ 2083 if (h->type == STT_FUNC 2084 || h->needs_plt) 2085 { 2086 if (h->plt.refcount <= 0 2087 || SYMBOL_CALLS_LOCAL (info, h) 2088 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT 2089 && h->root.type == bfd_link_hash_undefweak)) 2090 { 2091 /* This case can occur if we saw a PLT32 reloc in an input 2092 file, but the symbol was never referred to by a dynamic 2093 object, or if all references were garbage collected. In 2094 such a case, we don't actually need to build a procedure 2095 linkage table, and we can just do a PC32 reloc instead. */ 2096 h->plt.offset = (bfd_vma) -1; 2097 h->needs_plt = 0; 2098 } 2099 2100 return TRUE; 2101 } 2102 2103 /* If this is a weak symbol, and there is a real definition, the 2104 processor independent code will have arranged for us to see the 2105 real definition first, and we can just use the same value. */ 2106 if (h->u.weakdef != NULL) 2107 { 2108 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 2109 || h->u.weakdef->root.type == bfd_link_hash_defweak); 2110 h->root.u.def.section = h->u.weakdef->root.u.def.section; 2111 h->root.u.def.value = h->u.weakdef->root.u.def.value; 2112 h->non_got_ref = h->u.weakdef->non_got_ref; 2113 return TRUE; 2114 } 2115 2116 /* This is a reference to a symbol defined by a dynamic object which 2117 is not a function. */ 2118 2119 /* If we are creating a shared library, we must presume that the 2120 only references to the symbol are via the global offset table. 2121 For such cases we need not do anything here; the relocations will 2122 be handled correctly by relocate_section. */ 2123 if (bfd_link_pic (info)) 2124 return TRUE; 2125 2126 /* If there are no references to this symbol that do not use the 2127 GOT, we don't need to generate a copy reloc. */ 2128 if (!h->non_got_ref) 2129 return TRUE; 2130 2131 /* If -z nocopyreloc was given, we won't generate them either. */ 2132 if (info->nocopyreloc) 2133 { 2134 h->non_got_ref = 0; 2135 return TRUE; 2136 } 2137 2138 htab = elf32_tic6x_hash_table (info); 2139 if (htab == NULL) 2140 return FALSE; 2141 2142 /* We must allocate the symbol in our .dynbss section, which will 2143 become part of the .bss section of the executable. There will be 2144 an entry for this symbol in the .dynsym section. The dynamic 2145 object will contain position independent code, so all references 2146 from the dynamic object to this symbol will go through the global 2147 offset table. The dynamic linker will use the .dynsym entry to 2148 determine the address it must put in the global offset table, so 2149 both the dynamic object and the regular object will refer to the 2150 same memory location for the variable. */ 2151 2152 /* We must generate a R_C6000_COPY reloc to tell the dynamic linker to 2153 copy the initial value out of the dynamic object and into the 2154 runtime process image. */ 2155 if ((h->root.u.def.section->flags & SEC_READONLY) != 0) 2156 { 2157 s = htab->elf.sdynrelro; 2158 srel = htab->elf.sreldynrelro; 2159 } 2160 else 2161 { 2162 s = htab->elf.sdynbss; 2163 srel = htab->elf.srelbss; 2164 } 2165 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) 2166 { 2167 srel->size += sizeof (Elf32_External_Rela); 2168 h->needs_copy = 1; 2169 } 2170 2171 return _bfd_elf_adjust_dynamic_copy (info, h, s); 2172 } 2173 2174 static bfd_boolean 2175 elf32_tic6x_new_section_hook (bfd *abfd, asection *sec) 2176 { 2177 bfd_boolean ret; 2178 2179 /* Allocate target specific section data. */ 2180 if (!sec->used_by_bfd) 2181 { 2182 _tic6x_elf_section_data *sdata; 2183 bfd_size_type amt = sizeof (*sdata); 2184 2185 sdata = (_tic6x_elf_section_data *) bfd_zalloc (abfd, amt); 2186 if (sdata == NULL) 2187 return FALSE; 2188 sec->used_by_bfd = sdata; 2189 } 2190 2191 ret = _bfd_elf_new_section_hook (abfd, sec); 2192 sec->use_rela_p = elf32_tic6x_tdata (abfd)->use_rela_p; 2193 2194 return ret; 2195 } 2196 2197 /* Return true if relocation REL against section SEC is a REL rather 2198 than RELA relocation. RELOCS is the first relocation in the 2199 section and ABFD is the bfd that contains SEC. */ 2200 2201 static bfd_boolean 2202 elf32_tic6x_rel_relocation_p (bfd *abfd, asection *sec, 2203 const Elf_Internal_Rela *relocs, 2204 const Elf_Internal_Rela *rel) 2205 { 2206 Elf_Internal_Shdr *rel_hdr; 2207 const struct elf_backend_data *bed; 2208 2209 /* To determine which flavor of relocation this is, we depend on the 2210 fact that the INPUT_SECTION's REL_HDR is read before RELA_HDR. */ 2211 rel_hdr = elf_section_data (sec)->rel.hdr; 2212 if (rel_hdr == NULL) 2213 return FALSE; 2214 bed = get_elf_backend_data (abfd); 2215 return ((size_t) (rel - relocs) 2216 < NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel); 2217 } 2218 2219 /* We need dynamic symbols for every section, since segments can 2220 relocate independently. */ 2221 static bfd_boolean 2222 elf32_tic6x_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED, 2223 struct bfd_link_info *info ATTRIBUTE_UNUSED, 2224 asection *p) 2225 { 2226 switch (elf_section_data (p)->this_hdr.sh_type) 2227 { 2228 case SHT_PROGBITS: 2229 case SHT_NOBITS: 2230 /* If sh_type is yet undecided, assume it could be 2231 SHT_PROGBITS/SHT_NOBITS. */ 2232 case SHT_NULL: 2233 return FALSE; 2234 2235 /* There shouldn't be section relative relocations 2236 against any other section. */ 2237 default: 2238 return TRUE; 2239 } 2240 } 2241 2242 static bfd_boolean 2243 elf32_tic6x_relocate_section (bfd *output_bfd, 2244 struct bfd_link_info *info, 2245 bfd *input_bfd, 2246 asection *input_section, 2247 bfd_byte *contents, 2248 Elf_Internal_Rela *relocs, 2249 Elf_Internal_Sym *local_syms, 2250 asection **local_sections) 2251 { 2252 struct elf32_tic6x_link_hash_table *htab; 2253 Elf_Internal_Shdr *symtab_hdr; 2254 struct elf_link_hash_entry **sym_hashes; 2255 bfd_vma *local_got_offsets; 2256 Elf_Internal_Rela *rel; 2257 Elf_Internal_Rela *relend; 2258 bfd_boolean ok = TRUE; 2259 2260 htab = elf32_tic6x_hash_table (info); 2261 symtab_hdr = & elf_symtab_hdr (input_bfd); 2262 sym_hashes = elf_sym_hashes (input_bfd); 2263 local_got_offsets = elf_local_got_offsets (input_bfd); 2264 2265 relend = relocs + input_section->reloc_count; 2266 2267 for (rel = relocs; rel < relend; rel ++) 2268 { 2269 int r_type; 2270 unsigned long r_symndx; 2271 arelent bfd_reloc; 2272 reloc_howto_type *howto; 2273 Elf_Internal_Sym *sym; 2274 asection *sec; 2275 struct elf_link_hash_entry *h; 2276 bfd_vma off, off2, relocation; 2277 bfd_boolean unresolved_reloc; 2278 bfd_reloc_status_type r; 2279 struct bfd_link_hash_entry *sbh; 2280 bfd_boolean is_rel; 2281 2282 r_type = ELF32_R_TYPE (rel->r_info); 2283 r_symndx = ELF32_R_SYM (rel->r_info); 2284 2285 is_rel = elf32_tic6x_rel_relocation_p (input_bfd, input_section, 2286 relocs, rel); 2287 2288 if (is_rel) 2289 elf32_tic6x_info_to_howto_rel (input_bfd, &bfd_reloc, rel); 2290 else 2291 elf32_tic6x_info_to_howto (input_bfd, &bfd_reloc, rel); 2292 howto = bfd_reloc.howto; 2293 if (howto == NULL) 2294 { 2295 bfd_set_error (bfd_error_bad_value); 2296 return FALSE; 2297 } 2298 2299 h = NULL; 2300 sym = NULL; 2301 sec = NULL; 2302 unresolved_reloc = FALSE; 2303 2304 if (r_symndx < symtab_hdr->sh_info) 2305 { 2306 sym = local_syms + r_symndx; 2307 sec = local_sections[r_symndx]; 2308 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2309 } 2310 else 2311 { 2312 bfd_boolean warned, ignored; 2313 2314 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 2315 r_symndx, symtab_hdr, sym_hashes, 2316 h, sec, relocation, 2317 unresolved_reloc, warned, ignored); 2318 } 2319 2320 if (sec != NULL && discarded_section (sec)) 2321 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 2322 rel, 1, relend, howto, 0, contents); 2323 2324 if (bfd_link_relocatable (info)) 2325 { 2326 if (is_rel 2327 && sym != NULL 2328 && ELF_ST_TYPE (sym->st_info) == STT_SECTION) 2329 { 2330 rel->r_addend = 0; 2331 relocation = sec->output_offset + sym->st_value; 2332 r = _bfd_relocate_contents (howto, input_bfd, relocation, 2333 contents + rel->r_offset); 2334 goto done_reloc; 2335 } 2336 continue; 2337 } 2338 2339 switch (r_type) 2340 { 2341 case R_C6000_NONE: 2342 case R_C6000_ALIGN: 2343 case R_C6000_FPHEAD: 2344 case R_C6000_NOCMP: 2345 /* No action needed. */ 2346 continue; 2347 2348 case R_C6000_PCR_S21: 2349 /* A branch to an undefined weak symbol is turned into a 2350 "b .s2 B3" instruction if the existing insn is of the 2351 form "b .s2 symbol". */ 2352 if (h ? h->root.type == bfd_link_hash_undefweak 2353 && (htab->elf.splt == NULL || h->plt.offset == (bfd_vma) -1) 2354 : r_symndx != STN_UNDEF && bfd_is_und_section (sec)) 2355 { 2356 unsigned long oldval; 2357 oldval = bfd_get_32 (input_bfd, contents + rel->r_offset); 2358 2359 if ((oldval & 0x7e) == 0x12) 2360 { 2361 oldval &= 0xF0000001; 2362 bfd_put_32 (input_bfd, oldval | 0x000c0362, 2363 contents + rel->r_offset); 2364 r = bfd_reloc_ok; 2365 goto done_reloc; 2366 } 2367 } 2368 /* Fall through. */ 2369 2370 case R_C6000_PCR_S12: 2371 case R_C6000_PCR_S10: 2372 case R_C6000_PCR_S7: 2373 if (h != NULL 2374 && h->plt.offset != (bfd_vma) -1 2375 && htab->elf.splt != NULL) 2376 { 2377 relocation = (htab->elf.splt->output_section->vma 2378 + htab->elf.splt->output_offset 2379 + h->plt.offset); 2380 } 2381 2382 /* Generic PC-relative handling produces a value relative to 2383 the exact location of the relocation. Adjust it to be 2384 relative to the start of the fetch packet instead. */ 2385 relocation += (input_section->output_section->vma 2386 + input_section->output_offset 2387 + rel->r_offset) & 0x1f; 2388 unresolved_reloc = FALSE; 2389 break; 2390 2391 case R_C6000_PCR_H16: 2392 case R_C6000_PCR_L16: 2393 off = (input_section->output_section->vma 2394 + input_section->output_offset 2395 + rel->r_offset); 2396 /* These must be calculated as R = S - FP(FP(PC) - A). 2397 PC, here, is the value we just computed in OFF. RELOCATION 2398 has the address of S + A. */ 2399 relocation -= rel->r_addend; 2400 off2 = ((off & ~(bfd_vma)0x1f) - rel->r_addend) & (bfd_vma)~0x1f; 2401 off2 = relocation - off2; 2402 relocation = off + off2; 2403 break; 2404 2405 case R_C6000_DSBT_INDEX: 2406 relocation = elf32_tic6x_hash_table (info)->params.dsbt_index; 2407 if (!bfd_link_pic (info) || relocation != 0) 2408 break; 2409 2410 /* fall through */ 2411 case R_C6000_ABS32: 2412 case R_C6000_ABS16: 2413 case R_C6000_ABS8: 2414 case R_C6000_ABS_S16: 2415 case R_C6000_ABS_L16: 2416 case R_C6000_ABS_H16: 2417 /* When generating a shared object or relocatable executable, these 2418 relocations are copied into the output file to be resolved at 2419 run time. */ 2420 if ((bfd_link_pic (info) || elf32_tic6x_using_dsbt (output_bfd)) 2421 && (input_section->flags & SEC_ALLOC) 2422 && (h == NULL 2423 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 2424 || h->root.type != bfd_link_hash_undefweak)) 2425 { 2426 Elf_Internal_Rela outrel; 2427 bfd_boolean skip, relocate; 2428 asection *sreloc; 2429 2430 unresolved_reloc = FALSE; 2431 2432 sreloc = elf_section_data (input_section)->sreloc; 2433 BFD_ASSERT (sreloc != NULL && sreloc->contents != NULL); 2434 2435 skip = FALSE; 2436 relocate = FALSE; 2437 2438 outrel.r_offset = 2439 _bfd_elf_section_offset (output_bfd, info, input_section, 2440 rel->r_offset); 2441 if (outrel.r_offset == (bfd_vma) -1) 2442 skip = TRUE; 2443 else if (outrel.r_offset == (bfd_vma) -2) 2444 skip = TRUE, relocate = TRUE; 2445 outrel.r_offset += (input_section->output_section->vma 2446 + input_section->output_offset); 2447 2448 if (skip) 2449 memset (&outrel, 0, sizeof outrel); 2450 else if (h != NULL 2451 && h->dynindx != -1 2452 && (!bfd_link_pic (info) 2453 || !SYMBOLIC_BIND (info, h) 2454 || !h->def_regular)) 2455 { 2456 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 2457 outrel.r_addend = rel->r_addend; 2458 } 2459 else 2460 { 2461 long indx; 2462 2463 outrel.r_addend = relocation + rel->r_addend; 2464 2465 if (bfd_is_abs_section (sec)) 2466 indx = 0; 2467 else if (sec == NULL || sec->owner == NULL) 2468 { 2469 bfd_set_error (bfd_error_bad_value); 2470 return FALSE; 2471 } 2472 else 2473 { 2474 asection *osec; 2475 2476 osec = sec->output_section; 2477 indx = elf_section_data (osec)->dynindx; 2478 outrel.r_addend -= osec->vma; 2479 BFD_ASSERT (indx != 0); 2480 } 2481 2482 outrel.r_info = ELF32_R_INFO (indx, r_type); 2483 } 2484 2485 elf32_tic6x_install_rela (output_bfd, sreloc, &outrel); 2486 2487 /* If this reloc is against an external symbol, we do not want to 2488 fiddle with the addend. Otherwise, we need to include the symbol 2489 value so that it becomes an addend for the dynamic reloc. */ 2490 if (! relocate) 2491 continue; 2492 } 2493 2494 /* Generic logic OK. */ 2495 break; 2496 2497 case R_C6000_SBR_U15_B: 2498 case R_C6000_SBR_U15_H: 2499 case R_C6000_SBR_U15_W: 2500 case R_C6000_SBR_S16: 2501 case R_C6000_SBR_L16_B: 2502 case R_C6000_SBR_L16_H: 2503 case R_C6000_SBR_L16_W: 2504 case R_C6000_SBR_H16_B: 2505 case R_C6000_SBR_H16_H: 2506 case R_C6000_SBR_H16_W: 2507 sbh = bfd_link_hash_lookup (info->hash, "__c6xabi_DSBT_BASE", 2508 FALSE, FALSE, TRUE); 2509 if (sbh != NULL 2510 && (sbh->type == bfd_link_hash_defined 2511 || sbh->type == bfd_link_hash_defweak)) 2512 { 2513 if (h ? (h->root.type == bfd_link_hash_undefweak 2514 && (htab->elf.splt == NULL 2515 || h->plt.offset == (bfd_vma) -1)) 2516 : r_symndx != STN_UNDEF && bfd_is_und_section (sec)) 2517 relocation = 0; 2518 else 2519 relocation -= (sbh->u.def.value 2520 + sbh->u.def.section->output_section->vma 2521 + sbh->u.def.section->output_offset); 2522 } 2523 else 2524 { 2525 _bfd_error_handler (_("%B: SB-relative relocation but " 2526 "__c6xabi_DSBT_BASE not defined"), 2527 input_bfd); 2528 ok = FALSE; 2529 continue; 2530 } 2531 break; 2532 2533 case R_C6000_SBR_GOT_U15_W: 2534 case R_C6000_SBR_GOT_L16_W: 2535 case R_C6000_SBR_GOT_H16_W: 2536 case R_C6000_EHTYPE: 2537 /* Relocation is to the entry for this symbol in the global 2538 offset table. */ 2539 if (htab->elf.sgot == NULL) 2540 abort (); 2541 2542 if (h != NULL) 2543 { 2544 bfd_boolean dyn; 2545 2546 off = h->got.offset; 2547 dyn = htab->elf.dynamic_sections_created; 2548 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2549 bfd_link_pic (info), 2550 h) 2551 || (bfd_link_pic (info) 2552 && SYMBOL_REFERENCES_LOCAL (info, h)) 2553 || (ELF_ST_VISIBILITY (h->other) 2554 && h->root.type == bfd_link_hash_undefweak)) 2555 { 2556 /* This is actually a static link, or it is a 2557 -Bsymbolic link and the symbol is defined 2558 locally, or the symbol was forced to be local 2559 because of a version file. We must initialize 2560 this entry in the global offset table. Since the 2561 offset must always be a multiple of 4, we use the 2562 least significant bit to record whether we have 2563 initialized it already. 2564 2565 When doing a dynamic link, we create a .rel.got 2566 relocation entry to initialize the value. This 2567 is done in the finish_dynamic_symbol routine. */ 2568 if ((off & 1) != 0) 2569 off &= ~1; 2570 else 2571 { 2572 bfd_put_32 (output_bfd, relocation, 2573 htab->elf.sgot->contents + off); 2574 h->got.offset |= 1; 2575 2576 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2577 bfd_link_pic (info), 2578 h) 2579 && !(ELF_ST_VISIBILITY (h->other) 2580 && h->root.type == bfd_link_hash_undefweak)) 2581 elf32_tic6x_make_got_dynreloc (output_bfd, htab, sec, 2582 off); 2583 } 2584 } 2585 else 2586 unresolved_reloc = FALSE; 2587 } 2588 else 2589 { 2590 if (local_got_offsets == NULL) 2591 abort (); 2592 2593 off = local_got_offsets[r_symndx]; 2594 2595 /* The offset must always be a multiple of 4. We use 2596 the least significant bit to record whether we have 2597 already generated the necessary reloc. */ 2598 if ((off & 1) != 0) 2599 off &= ~1; 2600 else 2601 { 2602 bfd_put_32 (output_bfd, relocation, 2603 htab->elf.sgot->contents + off); 2604 2605 if (bfd_link_pic (info) || elf32_tic6x_using_dsbt (output_bfd)) 2606 elf32_tic6x_make_got_dynreloc (output_bfd, htab, sec, off); 2607 2608 local_got_offsets[r_symndx] |= 1; 2609 } 2610 } 2611 2612 if (off >= (bfd_vma) -2) 2613 abort (); 2614 2615 if (htab->dsbt) 2616 relocation = (htab->elf.sgot->output_section->vma 2617 + htab->elf.sgot->output_offset + off 2618 - htab->dsbt->output_section->vma 2619 - htab->dsbt->output_offset); 2620 else 2621 relocation = (htab->elf.sgot->output_section->vma 2622 + htab->elf.sgot->output_offset + off 2623 - htab->elf.sgotplt->output_section->vma 2624 - htab->elf.sgotplt->output_offset); 2625 2626 if (rel->r_addend != 0) 2627 { 2628 /* We can't do anything for a relocation which is against 2629 a symbol *plus offset*. GOT holds relocations for 2630 symbols. Make this an error; the compiler isn't 2631 allowed to pass us these kinds of things. */ 2632 if (h == NULL) 2633 _bfd_error_handler 2634 /* xgettext:c-format */ 2635 (_("%B, section %A: relocation %s with non-zero addend %d" 2636 " against local symbol"), 2637 input_bfd, 2638 input_section, 2639 elf32_tic6x_howto_table[r_type].name, 2640 rel->r_addend); 2641 else 2642 _bfd_error_handler 2643 /* xgettext:c-format */ 2644 (_("%B, section %A: relocation %s with non-zero addend %d" 2645 " against symbol `%s'"), 2646 input_bfd, 2647 input_section, 2648 elf32_tic6x_howto_table[r_type].name, 2649 rel->r_addend, 2650 h->root.root.string[0] != '\0' ? h->root.root.string 2651 : _("[whose name is lost]")); 2652 2653 bfd_set_error (bfd_error_bad_value); 2654 return FALSE; 2655 } 2656 break; 2657 2658 case R_C6000_PREL31: 2659 if (h != NULL 2660 && h->plt.offset != (bfd_vma) -1 2661 && htab->elf.splt != NULL) 2662 { 2663 relocation = (htab->elf.splt->output_section->vma 2664 + htab->elf.splt->output_offset 2665 + h->plt.offset); 2666 } 2667 break; 2668 2669 case R_C6000_COPY: 2670 /* Invalid in relocatable object. */ 2671 default: 2672 /* Unknown relocation. */ 2673 /* xgettext:c-format */ 2674 _bfd_error_handler (_("%B: invalid relocation type %d"), 2675 input_bfd, r_type); 2676 ok = FALSE; 2677 continue; 2678 } 2679 2680 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 2681 contents, rel->r_offset, 2682 relocation, rel->r_addend); 2683 2684 done_reloc: 2685 if (r == bfd_reloc_ok 2686 && howto->complain_on_overflow == complain_overflow_bitfield) 2687 { 2688 /* Generic overflow handling accepts cases the ABI says 2689 should be rejected for R_C6000_ABS16 and 2690 R_C6000_ABS8. */ 2691 bfd_vma value = (relocation + rel->r_addend) & 0xffffffff; 2692 bfd_vma sbit = 1 << (howto->bitsize - 1); 2693 bfd_vma sbits = (-(bfd_vma) sbit) & 0xffffffff; 2694 bfd_vma value_sbits = value & sbits; 2695 2696 if (value_sbits != 0 2697 && value_sbits != sbit 2698 && value_sbits != sbits) 2699 r = bfd_reloc_overflow; 2700 } 2701 2702 if (r != bfd_reloc_ok) 2703 { 2704 const char *name; 2705 const char *error_message; 2706 2707 if (h != NULL) 2708 name = h->root.root.string; 2709 else 2710 { 2711 name = bfd_elf_string_from_elf_section (input_bfd, 2712 symtab_hdr->sh_link, 2713 sym->st_name); 2714 if (name == NULL) 2715 return FALSE; 2716 if (*name == '\0') 2717 name = bfd_section_name (input_bfd, sec); 2718 } 2719 2720 switch (r) 2721 { 2722 case bfd_reloc_overflow: 2723 /* If the overflowing reloc was to an undefined symbol, 2724 we have already printed one error message and there 2725 is no point complaining again. */ 2726 if (!h || h->root.type != bfd_link_hash_undefined) 2727 (*info->callbacks->reloc_overflow) 2728 (info, (h ? &h->root : NULL), name, howto->name, 2729 (bfd_vma) 0, input_bfd, input_section, rel->r_offset); 2730 break; 2731 2732 case bfd_reloc_undefined: 2733 (*info->callbacks->undefined_symbol) (info, name, input_bfd, 2734 input_section, 2735 rel->r_offset, TRUE); 2736 break; 2737 2738 case bfd_reloc_outofrange: 2739 error_message = _("out of range"); 2740 goto common_error; 2741 2742 case bfd_reloc_notsupported: 2743 error_message = _("unsupported relocation"); 2744 goto common_error; 2745 2746 case bfd_reloc_dangerous: 2747 error_message = _("dangerous relocation"); 2748 goto common_error; 2749 2750 default: 2751 error_message = _("unknown error"); 2752 /* Fall through. */ 2753 2754 common_error: 2755 BFD_ASSERT (error_message != NULL); 2756 (*info->callbacks->reloc_dangerous) 2757 (info, error_message, input_bfd, input_section, rel->r_offset); 2758 break; 2759 } 2760 } 2761 } 2762 2763 return ok; 2764 } 2765 2766 2767 /* Look through the relocs for a section during the first phase, and 2768 calculate needed space in the global offset table, procedure linkage 2769 table, and dynamic reloc sections. */ 2770 2771 static bfd_boolean 2772 elf32_tic6x_check_relocs (bfd *abfd, struct bfd_link_info *info, 2773 asection *sec, const Elf_Internal_Rela *relocs) 2774 { 2775 struct elf32_tic6x_link_hash_table *htab; 2776 Elf_Internal_Shdr *symtab_hdr; 2777 struct elf_link_hash_entry **sym_hashes; 2778 const Elf_Internal_Rela *rel; 2779 const Elf_Internal_Rela *rel_end; 2780 asection *sreloc; 2781 2782 if (bfd_link_relocatable (info)) 2783 return TRUE; 2784 2785 htab = elf32_tic6x_hash_table (info); 2786 symtab_hdr = &elf_symtab_hdr (abfd); 2787 sym_hashes = elf_sym_hashes (abfd); 2788 2789 /* Create dynamic sections for relocatable executables so that we can 2790 copy relocations. */ 2791 if ((bfd_link_pic (info) || elf32_tic6x_using_dsbt (abfd)) 2792 && ! htab->elf.dynamic_sections_created) 2793 { 2794 if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) 2795 return FALSE; 2796 } 2797 2798 sreloc = NULL; 2799 2800 rel_end = relocs + sec->reloc_count; 2801 for (rel = relocs; rel < rel_end; rel++) 2802 { 2803 unsigned int r_type; 2804 unsigned long r_symndx; 2805 struct elf_link_hash_entry *h; 2806 Elf_Internal_Sym *isym; 2807 2808 r_symndx = ELF32_R_SYM (rel->r_info); 2809 r_type = ELF32_R_TYPE (rel->r_info); 2810 2811 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) 2812 { 2813 /* xgettext:c-format */ 2814 _bfd_error_handler (_("%B: bad symbol index: %d"), 2815 abfd, r_symndx); 2816 return FALSE; 2817 } 2818 2819 if (r_symndx < symtab_hdr->sh_info) 2820 { 2821 /* A local symbol. */ 2822 isym = bfd_sym_from_r_symndx (&htab->sym_cache, 2823 abfd, r_symndx); 2824 if (isym == NULL) 2825 return FALSE; 2826 h = NULL; 2827 } 2828 else 2829 { 2830 isym = NULL; 2831 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 2832 while (h->root.type == bfd_link_hash_indirect 2833 || h->root.type == bfd_link_hash_warning) 2834 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2835 2836 /* PR15323, ref flags aren't set for references in the same 2837 object. */ 2838 h->root.non_ir_ref = 1; 2839 } 2840 2841 switch (r_type) 2842 { 2843 case R_C6000_PCR_S21: 2844 case R_C6000_PREL31: 2845 /* This symbol requires a procedure linkage table entry. We 2846 actually build the entry in adjust_dynamic_symbol, 2847 because this might be a case of linking PIC code which is 2848 never referenced by a dynamic object, in which case we 2849 don't need to generate a procedure linkage table entry 2850 after all. */ 2851 2852 /* If this is a local symbol, we resolve it directly without 2853 creating a procedure linkage table entry. */ 2854 if (h == NULL) 2855 continue; 2856 2857 h->needs_plt = 1; 2858 h->plt.refcount += 1; 2859 break; 2860 2861 case R_C6000_SBR_GOT_U15_W: 2862 case R_C6000_SBR_GOT_L16_W: 2863 case R_C6000_SBR_GOT_H16_W: 2864 case R_C6000_EHTYPE: 2865 /* This symbol requires a global offset table entry. */ 2866 if (h != NULL) 2867 { 2868 h->got.refcount += 1; 2869 } 2870 else 2871 { 2872 bfd_signed_vma *local_got_refcounts; 2873 2874 /* This is a global offset table entry for a local symbol. */ 2875 local_got_refcounts = elf_local_got_refcounts (abfd); 2876 if (local_got_refcounts == NULL) 2877 { 2878 bfd_size_type size; 2879 2880 size = symtab_hdr->sh_info; 2881 size *= (sizeof (bfd_signed_vma) 2882 + sizeof (bfd_vma) + sizeof(char)); 2883 local_got_refcounts = bfd_zalloc (abfd, size); 2884 if (local_got_refcounts == NULL) 2885 return FALSE; 2886 elf_local_got_refcounts (abfd) = local_got_refcounts; 2887 } 2888 local_got_refcounts[r_symndx] += 1; 2889 } 2890 2891 if (htab->elf.sgot == NULL) 2892 { 2893 if (htab->elf.dynobj == NULL) 2894 htab->elf.dynobj = abfd; 2895 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info)) 2896 return FALSE; 2897 } 2898 break; 2899 2900 case R_C6000_DSBT_INDEX: 2901 /* We'd like to check for nonzero dsbt_index here, but it's 2902 set up only after check_relocs is called. Instead, we 2903 store the number of R_C6000_DSBT_INDEX relocs in the 2904 pc_count field, and potentially discard the extra space 2905 in elf32_tic6x_allocate_dynrelocs. */ 2906 if (!bfd_link_pic (info)) 2907 break; 2908 2909 /* fall through */ 2910 case R_C6000_ABS32: 2911 case R_C6000_ABS16: 2912 case R_C6000_ABS8: 2913 case R_C6000_ABS_S16: 2914 case R_C6000_ABS_L16: 2915 case R_C6000_ABS_H16: 2916 /* If we are creating a shared library, and this is a reloc 2917 against a global symbol, or a non PC relative reloc 2918 against a local symbol, then we need to copy the reloc 2919 into the shared library. However, if we are linking with 2920 -Bsymbolic, we do not need to copy a reloc against a 2921 global symbol which is defined in an object we are 2922 including in the link (i.e., DEF_REGULAR is set). At 2923 this point we have not seen all the input files, so it is 2924 possible that DEF_REGULAR is not set now but will be set 2925 later (it is never cleared). In case of a weak definition, 2926 DEF_REGULAR may be cleared later by a strong definition in 2927 a shared library. We account for that possibility below by 2928 storing information in the relocs_copied field of the hash 2929 table entry. A similar situation occurs when creating 2930 shared libraries and symbol visibility changes render the 2931 symbol local. 2932 2933 If on the other hand, we are creating an executable, we 2934 may need to keep relocations for symbols satisfied by a 2935 dynamic library if we manage to avoid copy relocs for the 2936 symbol. */ 2937 if ((bfd_link_pic (info) || elf32_tic6x_using_dsbt (abfd)) 2938 && (sec->flags & SEC_ALLOC) != 0) 2939 { 2940 struct elf_dyn_relocs *p; 2941 struct elf_dyn_relocs **head; 2942 2943 /* We must copy these reloc types into the output file. 2944 Create a reloc section in dynobj and make room for 2945 this reloc. */ 2946 if (sreloc == NULL) 2947 { 2948 if (htab->elf.dynobj == NULL) 2949 htab->elf.dynobj = abfd; 2950 2951 sreloc = _bfd_elf_make_dynamic_reloc_section 2952 (sec, htab->elf.dynobj, 2, abfd, /*rela? */ TRUE); 2953 2954 if (sreloc == NULL) 2955 return FALSE; 2956 } 2957 2958 /* If this is a global symbol, we count the number of 2959 relocations we need for this symbol. */ 2960 if (h != NULL) 2961 { 2962 head = &((struct elf32_tic6x_link_hash_entry *) h)->dyn_relocs; 2963 } 2964 else 2965 { 2966 /* Track dynamic relocs needed for local syms too. 2967 We really need local syms available to do this 2968 easily. Oh well. */ 2969 void **vpp; 2970 asection *s; 2971 2972 s = bfd_section_from_elf_index (abfd, isym->st_shndx); 2973 if (s == NULL) 2974 s = sec; 2975 2976 vpp = &elf_section_data (s)->local_dynrel; 2977 head = (struct elf_dyn_relocs **)vpp; 2978 } 2979 2980 p = *head; 2981 if (p == NULL || p->sec != sec) 2982 { 2983 bfd_size_type amt = sizeof *p; 2984 p = bfd_alloc (htab->elf.dynobj, amt); 2985 if (p == NULL) 2986 return FALSE; 2987 p->next = *head; 2988 *head = p; 2989 p->sec = sec; 2990 p->count = 0; 2991 p->pc_count = 0; 2992 } 2993 2994 p->count += 1; 2995 if (r_type == R_C6000_DSBT_INDEX) 2996 p->pc_count += 1; 2997 } 2998 break; 2999 3000 case R_C6000_SBR_U15_B: 3001 case R_C6000_SBR_U15_H: 3002 case R_C6000_SBR_U15_W: 3003 case R_C6000_SBR_S16: 3004 case R_C6000_SBR_L16_B: 3005 case R_C6000_SBR_L16_H: 3006 case R_C6000_SBR_L16_W: 3007 case R_C6000_SBR_H16_B: 3008 case R_C6000_SBR_H16_H: 3009 case R_C6000_SBR_H16_W: 3010 if (h != NULL && bfd_link_executable (info)) 3011 { 3012 /* For B14-relative addresses, we might need a copy 3013 reloc. */ 3014 h->non_got_ref = 1; 3015 } 3016 break; 3017 3018 default: 3019 break; 3020 } 3021 } 3022 3023 return TRUE; 3024 } 3025 3026 static bfd_boolean 3027 elf32_tic6x_add_symbol_hook (bfd *abfd, 3028 struct bfd_link_info *info ATTRIBUTE_UNUSED, 3029 Elf_Internal_Sym *sym, 3030 const char **namep ATTRIBUTE_UNUSED, 3031 flagword *flagsp ATTRIBUTE_UNUSED, 3032 asection **secp, 3033 bfd_vma *valp) 3034 { 3035 switch (sym->st_shndx) 3036 { 3037 case SHN_TIC6X_SCOMMON: 3038 *secp = bfd_make_section_old_way (abfd, ".scommon"); 3039 (*secp)->flags |= SEC_IS_COMMON; 3040 *valp = sym->st_size; 3041 (void) bfd_set_section_alignment (abfd, *secp, bfd_log2 (sym->st_value)); 3042 break; 3043 } 3044 3045 return TRUE; 3046 } 3047 3048 static void 3049 elf32_tic6x_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym) 3050 { 3051 elf_symbol_type *elfsym; 3052 3053 elfsym = (elf_symbol_type *) asym; 3054 switch (elfsym->internal_elf_sym.st_shndx) 3055 { 3056 case SHN_TIC6X_SCOMMON: 3057 if (tic6x_elf_scom_section.name == NULL) 3058 { 3059 /* Initialize the small common section. */ 3060 tic6x_elf_scom_section.name = ".scommon"; 3061 tic6x_elf_scom_section.flags = SEC_IS_COMMON; 3062 tic6x_elf_scom_section.output_section = &tic6x_elf_scom_section; 3063 tic6x_elf_scom_section.symbol = &tic6x_elf_scom_symbol; 3064 tic6x_elf_scom_section.symbol_ptr_ptr = &tic6x_elf_scom_symbol_ptr; 3065 tic6x_elf_scom_symbol.name = ".scommon"; 3066 tic6x_elf_scom_symbol.flags = BSF_SECTION_SYM; 3067 tic6x_elf_scom_symbol.section = &tic6x_elf_scom_section; 3068 tic6x_elf_scom_symbol_ptr = &tic6x_elf_scom_symbol; 3069 } 3070 asym->section = &tic6x_elf_scom_section; 3071 asym->value = elfsym->internal_elf_sym.st_size; 3072 break; 3073 } 3074 } 3075 3076 static int 3077 elf32_tic6x_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED, 3078 const char *name ATTRIBUTE_UNUSED, 3079 Elf_Internal_Sym *sym, 3080 asection *input_sec, 3081 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) 3082 { 3083 /* If we see a common symbol, which implies a relocatable link, then 3084 if a symbol was small common in an input file, mark it as small 3085 common in the output file. */ 3086 if (sym->st_shndx == SHN_COMMON && strcmp (input_sec->name, ".scommon") == 0) 3087 sym->st_shndx = SHN_TIC6X_SCOMMON; 3088 3089 return 1; 3090 } 3091 3092 static bfd_boolean 3093 elf32_tic6x_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, 3094 asection *sec, 3095 int *retval) 3096 { 3097 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) 3098 { 3099 *retval = SHN_TIC6X_SCOMMON; 3100 return TRUE; 3101 } 3102 3103 return FALSE; 3104 } 3105 3106 /* Allocate space in .plt, .got and associated reloc sections for 3107 dynamic relocs. */ 3108 3109 static bfd_boolean 3110 elf32_tic6x_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) 3111 { 3112 struct bfd_link_info *info; 3113 struct elf32_tic6x_link_hash_table *htab; 3114 struct elf32_tic6x_link_hash_entry *eh; 3115 struct elf_dyn_relocs *p; 3116 3117 if (h->root.type == bfd_link_hash_indirect) 3118 return TRUE; 3119 3120 eh = (struct elf32_tic6x_link_hash_entry *) h; 3121 info = (struct bfd_link_info *) inf; 3122 htab = elf32_tic6x_hash_table (info); 3123 3124 if (htab->elf.dynamic_sections_created && h->plt.refcount > 0) 3125 { 3126 /* Make sure this symbol is output as a dynamic symbol. 3127 Undefined weak syms won't yet be marked as dynamic. */ 3128 if (h->dynindx == -1 && !h->forced_local) 3129 { 3130 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 3131 return FALSE; 3132 } 3133 3134 if (bfd_link_pic (info) 3135 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) 3136 { 3137 asection *s = htab->elf.splt; 3138 3139 /* If this is the first .plt entry, make room for the special 3140 first entry. */ 3141 if (s->size == 0) 3142 s->size += PLT_ENTRY_SIZE; 3143 3144 h->plt.offset = s->size; 3145 3146 /* If this symbol is not defined in a regular file, and we are 3147 not generating a shared library, then set the symbol to this 3148 location in the .plt. This is required to make function 3149 pointers compare as equal between the normal executable and 3150 the shared library. */ 3151 if (! bfd_link_pic (info) && !h->def_regular) 3152 { 3153 h->root.u.def.section = s; 3154 h->root.u.def.value = h->plt.offset; 3155 } 3156 3157 /* Make room for this entry. */ 3158 s->size += PLT_ENTRY_SIZE; 3159 /* We also need to make an entry in the .got.plt section, which 3160 will be placed in the .got section by the linker script. */ 3161 htab->elf.sgotplt->size += 4; 3162 /* We also need to make an entry in the .rel.plt section. */ 3163 htab->elf.srelplt->size += sizeof (Elf32_External_Rela); 3164 } 3165 else 3166 { 3167 h->plt.offset = (bfd_vma) -1; 3168 h->needs_plt = 0; 3169 } 3170 } 3171 else 3172 { 3173 h->plt.offset = (bfd_vma) -1; 3174 h->needs_plt = 0; 3175 } 3176 3177 if (h->got.refcount > 0) 3178 { 3179 asection *s; 3180 3181 /* Make sure this symbol is output as a dynamic symbol. 3182 Undefined weak syms won't yet be marked as dynamic. */ 3183 if (h->dynindx == -1 3184 && !h->forced_local) 3185 { 3186 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 3187 return FALSE; 3188 } 3189 3190 s = htab->elf.sgot; 3191 h->got.offset = s->size; 3192 s->size += 4; 3193 3194 if (!(ELF_ST_VISIBILITY (h->other) 3195 && h->root.type == bfd_link_hash_undefweak)) 3196 htab->elf.srelgot->size += sizeof (Elf32_External_Rela); 3197 } 3198 else 3199 h->got.offset = (bfd_vma) -1; 3200 3201 if (eh->dyn_relocs == NULL) 3202 return TRUE; 3203 3204 /* Discard relocs on undefined weak syms with non-default 3205 visibility. */ 3206 if (bfd_link_pic (info) || elf32_tic6x_using_dsbt (htab->obfd)) 3207 { 3208 /* We use the pc_count field to hold the number of 3209 R_C6000_DSBT_INDEX relocs. */ 3210 if (htab->params.dsbt_index != 0) 3211 { 3212 struct elf_dyn_relocs **pp; 3213 3214 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) 3215 { 3216 p->count -= p->pc_count; 3217 p->pc_count = 0; 3218 if (p->count == 0) 3219 *pp = p->next; 3220 else 3221 pp = &p->next; 3222 } 3223 } 3224 3225 if (eh->dyn_relocs != NULL 3226 && h->root.type == bfd_link_hash_undefweak) 3227 { 3228 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) 3229 eh->dyn_relocs = NULL; 3230 3231 /* Make sure undefined weak symbols are output as a dynamic 3232 symbol in PIEs. */ 3233 else if (h->dynindx == -1 3234 && !h->forced_local) 3235 { 3236 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 3237 return FALSE; 3238 } 3239 } 3240 } 3241 3242 /* Finally, allocate space. */ 3243 for (p = eh->dyn_relocs; p != NULL; p = p->next) 3244 { 3245 asection *sreloc; 3246 3247 sreloc = elf_section_data (p->sec)->sreloc; 3248 3249 BFD_ASSERT (sreloc != NULL); 3250 sreloc->size += p->count * sizeof (Elf32_External_Rela); 3251 } 3252 3253 return TRUE; 3254 } 3255 3256 /* Find any dynamic relocs that apply to read-only sections. */ 3257 3258 static bfd_boolean 3259 elf32_tic6x_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) 3260 { 3261 struct elf32_tic6x_link_hash_entry *eh; 3262 struct elf_dyn_relocs *p; 3263 3264 eh = (struct elf32_tic6x_link_hash_entry *) h; 3265 for (p = eh->dyn_relocs; p != NULL; p = p->next) 3266 { 3267 asection *s = p->sec->output_section; 3268 3269 if (s != NULL && (s->flags & SEC_READONLY) != 0) 3270 { 3271 struct bfd_link_info *info = (struct bfd_link_info *) inf; 3272 3273 info->flags |= DF_TEXTREL; 3274 3275 /* Not an error, just cut short the traversal. */ 3276 return FALSE; 3277 } 3278 } 3279 return TRUE; 3280 } 3281 3282 /* Set the sizes of the dynamic sections. */ 3283 3284 static bfd_boolean 3285 elf32_tic6x_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) 3286 { 3287 struct elf32_tic6x_link_hash_table *htab; 3288 bfd *dynobj; 3289 asection *s; 3290 bfd_boolean relocs; 3291 bfd *ibfd; 3292 3293 htab = elf32_tic6x_hash_table (info); 3294 dynobj = htab->elf.dynobj; 3295 if (dynobj == NULL) 3296 abort (); 3297 3298 if (htab->elf.dynamic_sections_created) 3299 { 3300 /* Set the contents of the .interp section to the interpreter. */ 3301 if (bfd_link_executable (info) && !info->nointerp) 3302 { 3303 s = bfd_get_linker_section (dynobj, ".interp"); 3304 if (s == NULL) 3305 abort (); 3306 s->size = sizeof ELF_DYNAMIC_INTERPRETER; 3307 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; 3308 } 3309 } 3310 3311 /* Set up .got offsets for local syms, and space for local dynamic 3312 relocs. */ 3313 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) 3314 { 3315 bfd_signed_vma *local_got; 3316 bfd_signed_vma *end_local_got; 3317 bfd_size_type locsymcount; 3318 Elf_Internal_Shdr *symtab_hdr; 3319 asection *srel; 3320 3321 for (s = ibfd->sections; s != NULL; s = s->next) 3322 { 3323 struct elf_dyn_relocs *p; 3324 3325 for (p = ((struct elf_dyn_relocs *) 3326 elf_section_data (s)->local_dynrel); 3327 p != NULL; 3328 p = p->next) 3329 { 3330 if (!bfd_is_abs_section (p->sec) 3331 && bfd_is_abs_section (p->sec->output_section)) 3332 { 3333 /* Input section has been discarded, either because 3334 it is a copy of a linkonce section or due to 3335 linker script /DISCARD/, so we'll be discarding 3336 the relocs too. */ 3337 } 3338 else if (p->count != 0) 3339 { 3340 srel = elf_section_data (p->sec)->sreloc; 3341 srel->size += p->count * sizeof (Elf32_External_Rela); 3342 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 3343 info->flags |= DF_TEXTREL; 3344 } 3345 } 3346 } 3347 3348 local_got = elf_local_got_refcounts (ibfd); 3349 if (!local_got) 3350 continue; 3351 3352 symtab_hdr = &elf_symtab_hdr (ibfd); 3353 locsymcount = symtab_hdr->sh_info; 3354 end_local_got = local_got + locsymcount; 3355 s = htab->elf.sgot; 3356 srel = htab->elf.srelgot; 3357 for (; local_got < end_local_got; ++local_got) 3358 { 3359 if (*local_got > 0) 3360 { 3361 *local_got = s->size; 3362 s->size += 4; 3363 3364 if (bfd_link_pic (info) || elf32_tic6x_using_dsbt (output_bfd)) 3365 { 3366 srel->size += sizeof (Elf32_External_Rela); 3367 } 3368 } 3369 else 3370 *local_got = (bfd_vma) -1; 3371 } 3372 } 3373 3374 /* Allocate global sym .plt and .got entries, and space for global 3375 sym dynamic relocs. */ 3376 elf_link_hash_traverse (&htab->elf, elf32_tic6x_allocate_dynrelocs, info); 3377 3378 /* We now have determined the sizes of the various dynamic sections. 3379 Allocate memory for them. */ 3380 relocs = FALSE; 3381 for (s = dynobj->sections; s != NULL; s = s->next) 3382 { 3383 bfd_boolean strip_section = TRUE; 3384 3385 if ((s->flags & SEC_LINKER_CREATED) == 0) 3386 continue; 3387 3388 if (s == htab->dsbt) 3389 s->size = 4 * htab->params.dsbt_size; 3390 else if (s == htab->elf.splt 3391 || s == htab->elf.sgot 3392 || s == htab->elf.sgotplt 3393 || s == htab->elf.sdynbss 3394 || s == htab->elf.sdynrelro) 3395 { 3396 /* Strip this section if we don't need it; see the 3397 comment below. */ 3398 /* We'd like to strip these sections if they aren't needed, but if 3399 we've exported dynamic symbols from them we must leave them. 3400 It's too late to tell BFD to get rid of the symbols. */ 3401 3402 if (htab->elf.hplt != NULL) 3403 strip_section = FALSE; 3404 3405 /* Round up the size of the PLT section to a multiple of 32. */ 3406 if (s == htab->elf.splt && s->size > 0) 3407 s->size = (s->size + 31) & ~(bfd_vma)31; 3408 } 3409 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) 3410 { 3411 if (s->size != 0 3412 && s != htab->elf.srelplt) 3413 relocs = TRUE; 3414 3415 /* We use the reloc_count field as a counter if we need 3416 to copy relocs into the output file. */ 3417 s->reloc_count = 0; 3418 } 3419 else 3420 { 3421 /* It's not one of our sections, so don't allocate space. */ 3422 continue; 3423 } 3424 3425 if (s->size == 0) 3426 { 3427 /* If we don't need this section, strip it from the 3428 output file. This is mostly to handle .rel.bss and 3429 .rel.plt. We must create both sections in 3430 create_dynamic_sections, because they must be created 3431 before the linker maps input sections to output 3432 sections. The linker does that before 3433 adjust_dynamic_symbol is called, and it is that 3434 function which decides whether anything needs to go 3435 into these sections. */ 3436 if (strip_section) 3437 s->flags |= SEC_EXCLUDE; 3438 continue; 3439 } 3440 3441 if ((s->flags & SEC_HAS_CONTENTS) == 0) 3442 continue; 3443 3444 /* Allocate memory for the section contents. We use bfd_zalloc 3445 here in case unused entries are not reclaimed before the 3446 section's contents are written out. This should not happen, 3447 but this way if it does, we get a R_C6000_NONE reloc instead 3448 of garbage. */ 3449 s->contents = bfd_zalloc (dynobj, s->size); 3450 if (s->contents == NULL) 3451 return FALSE; 3452 } 3453 3454 if (htab->elf.dynamic_sections_created) 3455 { 3456 /* Add some entries to the .dynamic section. We fill in the 3457 values later, in elf32_tic6x_finish_dynamic_sections, but we 3458 must add the entries now so that we get the correct size for 3459 the .dynamic section. The DT_DEBUG entry is filled in by the 3460 dynamic linker and used by the debugger. */ 3461 #define add_dynamic_entry(TAG, VAL) \ 3462 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 3463 3464 if (bfd_link_executable (info)) 3465 { 3466 if (!add_dynamic_entry (DT_DEBUG, 0)) 3467 return FALSE; 3468 } 3469 3470 if (!add_dynamic_entry (DT_C6000_DSBT_BASE, 0) 3471 || !add_dynamic_entry (DT_C6000_DSBT_SIZE, htab->params.dsbt_size) 3472 || !add_dynamic_entry (DT_C6000_DSBT_INDEX, 3473 htab->params.dsbt_index)) 3474 return FALSE; 3475 3476 if (htab->elf.splt->size != 0) 3477 { 3478 if (!add_dynamic_entry (DT_PLTGOT, 0) 3479 || !add_dynamic_entry (DT_PLTRELSZ, 0) 3480 || !add_dynamic_entry (DT_PLTREL, DT_RELA) 3481 || !add_dynamic_entry (DT_JMPREL, 0)) 3482 return FALSE; 3483 } 3484 3485 if (relocs) 3486 { 3487 if (!add_dynamic_entry (DT_RELA, 0) 3488 || !add_dynamic_entry (DT_RELASZ, 0) 3489 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) 3490 return FALSE; 3491 3492 /* If any dynamic relocs apply to a read-only section, 3493 then we need a DT_TEXTREL entry. */ 3494 if ((info->flags & DF_TEXTREL) == 0) 3495 elf_link_hash_traverse (&htab->elf, 3496 elf32_tic6x_readonly_dynrelocs, info); 3497 3498 if ((info->flags & DF_TEXTREL) != 0) 3499 { 3500 if (!add_dynamic_entry (DT_TEXTREL, 0)) 3501 return FALSE; 3502 } 3503 } 3504 } 3505 #undef add_dynamic_entry 3506 3507 return TRUE; 3508 } 3509 3510 /* This function is called after all the input files have been read, 3511 and the input sections have been assigned to output sections. */ 3512 3513 static bfd_boolean 3514 elf32_tic6x_always_size_sections (bfd *output_bfd, struct bfd_link_info *info) 3515 { 3516 if (elf32_tic6x_using_dsbt (output_bfd) && !bfd_link_relocatable (info) 3517 && !bfd_elf_stack_segment_size (output_bfd, info, 3518 "__stacksize", DEFAULT_STACK_SIZE)) 3519 return FALSE; 3520 3521 return TRUE; 3522 } 3523 3524 static bfd_boolean 3525 elf32_tic6x_finish_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 3526 struct bfd_link_info *info) 3527 { 3528 struct elf32_tic6x_link_hash_table *htab; 3529 bfd *dynobj; 3530 asection *sdyn; 3531 3532 htab = elf32_tic6x_hash_table (info); 3533 dynobj = htab->elf.dynobj; 3534 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 3535 3536 if (elf_hash_table (info)->dynamic_sections_created) 3537 { 3538 Elf32_External_Dyn * dyncon; 3539 Elf32_External_Dyn * dynconend; 3540 3541 BFD_ASSERT (sdyn != NULL); 3542 3543 dyncon = (Elf32_External_Dyn *) sdyn->contents; 3544 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); 3545 3546 for (; dyncon < dynconend; dyncon++) 3547 { 3548 Elf_Internal_Dyn dyn; 3549 asection *s; 3550 3551 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 3552 3553 switch (dyn.d_tag) 3554 { 3555 default: 3556 break; 3557 3558 case DT_C6000_DSBT_BASE: 3559 s = htab->dsbt; 3560 dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset); 3561 break; 3562 3563 case DT_PLTGOT: 3564 s = htab->elf.sgotplt; 3565 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 3566 break; 3567 3568 case DT_JMPREL: 3569 s = htab->elf.srelplt; 3570 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 3571 break; 3572 3573 case DT_PLTRELSZ: 3574 s = htab->elf.srelplt; 3575 dyn.d_un.d_val = s->size; 3576 break; 3577 } 3578 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3579 } 3580 3581 /* Fill in the first entry in the procedure linkage table. */ 3582 if (htab->elf.splt && htab->elf.splt->size > 0) 3583 { 3584 bfd_vma got_offs = (htab->elf.sgotplt->output_section->vma 3585 + htab->elf.sgotplt->output_offset 3586 - htab->dsbt->output_section->vma 3587 - htab->dsbt->output_offset) / 4; 3588 3589 /* ldw .D2T2 *+b14[$GOT(0)],b2 */ 3590 bfd_put_32 (output_bfd, got_offs << 8 | 0x0100006e, 3591 htab->elf.splt->contents); 3592 /* ldw .D2T2 *+b14[$GOT(4)],b1 */ 3593 bfd_put_32 (output_bfd, (got_offs + 1) << 8 | 0x0080006e, 3594 htab->elf.splt->contents + 4); 3595 /* nop 3 */ 3596 bfd_put_32 (output_bfd, 0x00004000, 3597 htab->elf.splt->contents + 8); 3598 /* b .s2 b2 */ 3599 bfd_put_32 (output_bfd, 0x00080362, 3600 htab->elf.splt->contents + 12); 3601 /* nop 5 */ 3602 bfd_put_32 (output_bfd, 0x00008000, 3603 htab->elf.splt->contents + 16); 3604 3605 elf_section_data (htab->elf.splt->output_section) 3606 ->this_hdr.sh_entsize = PLT_ENTRY_SIZE; 3607 } 3608 } 3609 3610 return TRUE; 3611 } 3612 3613 /* Return address for Ith PLT stub in section PLT, for relocation REL 3614 or (bfd_vma) -1 if it should not be included. */ 3615 3616 static bfd_vma 3617 elf32_tic6x_plt_sym_val (bfd_vma i, const asection *plt, 3618 const arelent *rel ATTRIBUTE_UNUSED) 3619 { 3620 return plt->vma + (i + 1) * PLT_ENTRY_SIZE; 3621 } 3622 3623 static int 3624 elf32_tic6x_obj_attrs_arg_type (int tag) 3625 { 3626 if (tag == Tag_ABI_compatibility) 3627 return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_STR_VAL; 3628 else if (tag & 1) 3629 return ATTR_TYPE_FLAG_STR_VAL; 3630 else 3631 return ATTR_TYPE_FLAG_INT_VAL; 3632 } 3633 3634 static int 3635 elf32_tic6x_obj_attrs_order (int num) 3636 { 3637 if (num == LEAST_KNOWN_OBJ_ATTRIBUTE) 3638 return Tag_ABI_conformance; 3639 if ((num - 1) < Tag_ABI_conformance) 3640 return num - 1; 3641 return num; 3642 } 3643 3644 static bfd_boolean 3645 elf32_tic6x_obj_attrs_handle_unknown (bfd *abfd, int tag) 3646 { 3647 if ((tag & 127) < 64) 3648 { 3649 _bfd_error_handler 3650 /* xgettext:c-format */ 3651 (_("%B: error: unknown mandatory EABI object attribute %d"), 3652 abfd, tag); 3653 bfd_set_error (bfd_error_bad_value); 3654 return FALSE; 3655 } 3656 else 3657 { 3658 _bfd_error_handler 3659 /* xgettext:c-format */ 3660 (_("%B: warning: unknown EABI object attribute %d"), 3661 abfd, tag); 3662 return TRUE; 3663 } 3664 } 3665 3666 /* Merge the Tag_ISA attribute values ARCH1 and ARCH2 3667 and return the merged value. At present, all merges succeed, so no 3668 return value for errors is defined. */ 3669 3670 int 3671 elf32_tic6x_merge_arch_attributes (int arch1, int arch2) 3672 { 3673 int min_arch, max_arch; 3674 3675 min_arch = (arch1 < arch2 ? arch1 : arch2); 3676 max_arch = (arch1 > arch2 ? arch1 : arch2); 3677 3678 /* In most cases, the numerically greatest value is the correct 3679 merged value, but merging C64 and C67 results in C674X. */ 3680 if ((min_arch == C6XABI_Tag_ISA_C67X 3681 || min_arch == C6XABI_Tag_ISA_C67XP) 3682 && (max_arch == C6XABI_Tag_ISA_C64X 3683 || max_arch == C6XABI_Tag_ISA_C64XP)) 3684 return C6XABI_Tag_ISA_C674X; 3685 3686 return max_arch; 3687 } 3688 3689 /* Convert a Tag_ABI_array_object_alignment or 3690 Tag_ABI_array_object_align_expected tag value TAG to a 3691 corresponding alignment value; return the alignment, or -1 for an 3692 unknown tag value. */ 3693 3694 static int 3695 elf32_tic6x_tag_to_array_alignment (int tag) 3696 { 3697 switch (tag) 3698 { 3699 case 0: 3700 return 8; 3701 3702 case 1: 3703 return 4; 3704 3705 case 2: 3706 return 16; 3707 3708 default: 3709 return -1; 3710 } 3711 } 3712 3713 /* Convert a Tag_ABI_array_object_alignment or 3714 Tag_ABI_array_object_align_expected alignment ALIGN to a 3715 corresponding tag value; return the tag value. */ 3716 3717 static int 3718 elf32_tic6x_array_alignment_to_tag (int align) 3719 { 3720 switch (align) 3721 { 3722 case 8: 3723 return 0; 3724 3725 case 4: 3726 return 1; 3727 3728 case 16: 3729 return 2; 3730 3731 default: 3732 abort (); 3733 } 3734 } 3735 3736 /* Merge attributes from IBFD and OBFD, returning TRUE if the merge 3737 succeeded, FALSE otherwise. */ 3738 3739 static bfd_boolean 3740 elf32_tic6x_merge_attributes (bfd *ibfd, struct bfd_link_info *info) 3741 { 3742 bfd *obfd = info->output_bfd; 3743 bfd_boolean result = TRUE; 3744 obj_attribute *in_attr; 3745 obj_attribute *out_attr; 3746 int i; 3747 int array_align_in, array_align_out, array_expect_in, array_expect_out; 3748 3749 if (!elf_known_obj_attributes_proc (obfd)[0].i) 3750 { 3751 /* This is the first object. Copy the attributes. */ 3752 _bfd_elf_copy_obj_attributes (ibfd, obfd); 3753 3754 out_attr = elf_known_obj_attributes_proc (obfd); 3755 3756 /* Use the Tag_null value to indicate the attributes have been 3757 initialized. */ 3758 out_attr[0].i = 1; 3759 3760 return TRUE; 3761 } 3762 3763 in_attr = elf_known_obj_attributes_proc (ibfd); 3764 out_attr = elf_known_obj_attributes_proc (obfd); 3765 3766 /* No specification yet for handling of unknown attributes, so just 3767 ignore them and handle known ones. */ 3768 3769 if (out_attr[Tag_ABI_stack_align_preserved].i 3770 < in_attr[Tag_ABI_stack_align_needed].i) 3771 { 3772 _bfd_error_handler 3773 /* xgettext:c-format */ 3774 (_("error: %B requires more stack alignment than %B preserves"), 3775 ibfd, obfd); 3776 result = FALSE; 3777 } 3778 if (in_attr[Tag_ABI_stack_align_preserved].i 3779 < out_attr[Tag_ABI_stack_align_needed].i) 3780 { 3781 _bfd_error_handler 3782 /* xgettext:c-format */ 3783 (_("error: %B requires more stack alignment than %B preserves"), 3784 obfd, ibfd); 3785 result = FALSE; 3786 } 3787 3788 array_align_in = elf32_tic6x_tag_to_array_alignment 3789 (in_attr[Tag_ABI_array_object_alignment].i); 3790 if (array_align_in == -1) 3791 { 3792 _bfd_error_handler 3793 (_("error: unknown Tag_ABI_array_object_alignment value in %B"), 3794 ibfd); 3795 result = FALSE; 3796 } 3797 array_align_out = elf32_tic6x_tag_to_array_alignment 3798 (out_attr[Tag_ABI_array_object_alignment].i); 3799 if (array_align_out == -1) 3800 { 3801 _bfd_error_handler 3802 (_("error: unknown Tag_ABI_array_object_alignment value in %B"), 3803 obfd); 3804 result = FALSE; 3805 } 3806 array_expect_in = elf32_tic6x_tag_to_array_alignment 3807 (in_attr[Tag_ABI_array_object_align_expected].i); 3808 if (array_expect_in == -1) 3809 { 3810 _bfd_error_handler 3811 (_("error: unknown Tag_ABI_array_object_align_expected value in %B"), 3812 ibfd); 3813 result = FALSE; 3814 } 3815 array_expect_out = elf32_tic6x_tag_to_array_alignment 3816 (out_attr[Tag_ABI_array_object_align_expected].i); 3817 if (array_expect_out == -1) 3818 { 3819 _bfd_error_handler 3820 (_("error: unknown Tag_ABI_array_object_align_expected value in %B"), 3821 obfd); 3822 result = FALSE; 3823 } 3824 3825 if (array_align_out < array_expect_in) 3826 { 3827 _bfd_error_handler 3828 /* xgettext:c-format */ 3829 (_("error: %B requires more array alignment than %B preserves"), 3830 ibfd, obfd); 3831 result = FALSE; 3832 } 3833 if (array_align_in < array_expect_out) 3834 { 3835 _bfd_error_handler 3836 /* xgettext:c-format */ 3837 (_("error: %B requires more array alignment than %B preserves"), 3838 obfd, ibfd); 3839 result = FALSE; 3840 } 3841 3842 for (i = LEAST_KNOWN_OBJ_ATTRIBUTE; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++) 3843 { 3844 switch (i) 3845 { 3846 case Tag_ISA: 3847 out_attr[i].i = elf32_tic6x_merge_arch_attributes (in_attr[i].i, 3848 out_attr[i].i); 3849 break; 3850 3851 case Tag_ABI_wchar_t: 3852 if (out_attr[i].i == 0) 3853 out_attr[i].i = in_attr[i].i; 3854 if (out_attr[i].i != 0 3855 && in_attr[i].i != 0 3856 && out_attr[i].i != in_attr[i].i) 3857 { 3858 _bfd_error_handler 3859 /* xgettext:c-format */ 3860 (_("warning: %B and %B differ in wchar_t size"), obfd, ibfd); 3861 } 3862 break; 3863 3864 case Tag_ABI_stack_align_needed: 3865 if (out_attr[i].i < in_attr[i].i) 3866 out_attr[i].i = in_attr[i].i; 3867 break; 3868 3869 case Tag_ABI_stack_align_preserved: 3870 if (out_attr[i].i > in_attr[i].i) 3871 out_attr[i].i = in_attr[i].i; 3872 break; 3873 3874 case Tag_ABI_DSBT: 3875 if (out_attr[i].i != in_attr[i].i) 3876 { 3877 _bfd_error_handler 3878 /* xgettext:c-format */ 3879 (_("warning: %B and %B differ in whether code is " 3880 "compiled for DSBT"), 3881 obfd, ibfd); 3882 } 3883 break; 3884 3885 case Tag_ABI_PIC: 3886 case Tag_ABI_PID: 3887 if (out_attr[i].i > in_attr[i].i) 3888 out_attr[i].i = in_attr[i].i; 3889 break; 3890 3891 case Tag_ABI_array_object_alignment: 3892 if (array_align_out != -1 3893 && array_align_in != -1 3894 && array_align_out > array_align_in) 3895 out_attr[i].i 3896 = elf32_tic6x_array_alignment_to_tag (array_align_in); 3897 break; 3898 3899 case Tag_ABI_array_object_align_expected: 3900 if (array_expect_out != -1 3901 && array_expect_in != -1 3902 && array_expect_out < array_expect_in) 3903 out_attr[i].i 3904 = elf32_tic6x_array_alignment_to_tag (array_expect_in); 3905 break; 3906 3907 case Tag_ABI_conformance: 3908 /* Merging for this attribute is not specified. As on ARM, 3909 treat a missing attribute as no claim to conform and only 3910 merge identical values. */ 3911 if (out_attr[i].s == NULL 3912 || in_attr[i].s == NULL 3913 || strcmp (out_attr[i].s, 3914 in_attr[i].s) != 0) 3915 out_attr[i].s = NULL; 3916 break; 3917 3918 case Tag_ABI_compatibility: 3919 /* Merged in _bfd_elf_merge_object_attributes. */ 3920 break; 3921 3922 default: 3923 result 3924 = result && _bfd_elf_merge_unknown_attribute_low (ibfd, obfd, i); 3925 break; 3926 } 3927 3928 if (in_attr[i].type && !out_attr[i].type) 3929 out_attr[i].type = in_attr[i].type; 3930 } 3931 3932 /* Merge Tag_ABI_compatibility attributes and any common GNU ones. */ 3933 if (!_bfd_elf_merge_object_attributes (ibfd, info)) 3934 return FALSE; 3935 3936 result &= _bfd_elf_merge_unknown_attribute_list (ibfd, obfd); 3937 3938 return result; 3939 } 3940 3941 static bfd_boolean 3942 elf32_tic6x_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) 3943 { 3944 if (!_bfd_generic_verify_endian_match (ibfd, info)) 3945 return FALSE; 3946 3947 if (! is_tic6x_elf (ibfd) || ! is_tic6x_elf (info->output_bfd)) 3948 return TRUE; 3949 3950 if (!elf32_tic6x_merge_attributes (ibfd, info)) 3951 return FALSE; 3952 3953 return TRUE; 3954 } 3955 3956 /* Add a new unwind edit to the list described by HEAD, TAIL. If TINDEX is zero, 3957 adds the edit to the start of the list. (The list must be built in order of 3958 ascending TINDEX: the function's callers are primarily responsible for 3959 maintaining that condition). */ 3960 3961 static void 3962 elf32_tic6x_add_unwind_table_edit (tic6x_unwind_table_edit **head, 3963 tic6x_unwind_table_edit **tail, 3964 tic6x_unwind_edit_type type, 3965 asection *linked_section, 3966 unsigned int tindex) 3967 { 3968 tic6x_unwind_table_edit *new_edit = (tic6x_unwind_table_edit *) 3969 xmalloc (sizeof (tic6x_unwind_table_edit)); 3970 3971 new_edit->type = type; 3972 new_edit->linked_section = linked_section; 3973 new_edit->index = tindex; 3974 3975 if (tindex > 0) 3976 { 3977 new_edit->next = NULL; 3978 3979 if (*tail) 3980 (*tail)->next = new_edit; 3981 3982 (*tail) = new_edit; 3983 3984 if (!*head) 3985 (*head) = new_edit; 3986 } 3987 else 3988 { 3989 new_edit->next = *head; 3990 3991 if (!*tail) 3992 *tail = new_edit; 3993 3994 *head = new_edit; 3995 } 3996 } 3997 3998 static _tic6x_elf_section_data * 3999 get_tic6x_elf_section_data (asection * sec) 4000 { 4001 if (sec && sec->owner && is_tic6x_elf (sec->owner)) 4002 return elf32_tic6x_section_data (sec); 4003 else 4004 return NULL; 4005 } 4006 4007 4008 /* Increase the size of EXIDX_SEC by ADJUST bytes. ADJUST must be negative. */ 4009 static void 4010 elf32_tic6x_adjust_exidx_size (asection *exidx_sec, int adjust) 4011 { 4012 asection *out_sec; 4013 4014 if (!exidx_sec->rawsize) 4015 exidx_sec->rawsize = exidx_sec->size; 4016 4017 bfd_set_section_size (exidx_sec->owner, exidx_sec, exidx_sec->size + adjust); 4018 out_sec = exidx_sec->output_section; 4019 /* Adjust size of output section. */ 4020 bfd_set_section_size (out_sec->owner, out_sec, out_sec->size +adjust); 4021 } 4022 4023 /* Insert an EXIDX_CANTUNWIND marker at the end of a section. */ 4024 static void 4025 elf32_tic6x_insert_cantunwind_after (asection *text_sec, asection *exidx_sec) 4026 { 4027 struct _tic6x_elf_section_data *exidx_data; 4028 4029 exidx_data = get_tic6x_elf_section_data (exidx_sec); 4030 elf32_tic6x_add_unwind_table_edit ( 4031 &exidx_data->u.exidx.unwind_edit_list, 4032 &exidx_data->u.exidx.unwind_edit_tail, 4033 INSERT_EXIDX_CANTUNWIND_AT_END, text_sec, UINT_MAX); 4034 4035 elf32_tic6x_adjust_exidx_size (exidx_sec, 8); 4036 } 4037 4038 /* Scan .cx6abi.exidx tables, and create a list describing edits which 4039 should be made to those tables, such that: 4040 4041 1. Regions without unwind data are marked with EXIDX_CANTUNWIND entries. 4042 2. Duplicate entries are merged together (EXIDX_CANTUNWIND, or unwind 4043 codes which have been inlined into the index). 4044 4045 If MERGE_EXIDX_ENTRIES is false, duplicate entries are not merged. 4046 4047 The edits are applied when the tables are written 4048 (in elf32_tic6x_write_section). 4049 */ 4050 4051 bfd_boolean 4052 elf32_tic6x_fix_exidx_coverage (asection **text_section_order, 4053 unsigned int num_text_sections, 4054 struct bfd_link_info *info, 4055 bfd_boolean merge_exidx_entries) 4056 { 4057 bfd *inp; 4058 unsigned int last_second_word = 0, i; 4059 asection *last_exidx_sec = NULL; 4060 asection *last_text_sec = NULL; 4061 int last_unwind_type = -1; 4062 4063 /* Walk over all EXIDX sections, and create backlinks from the corrsponding 4064 text sections. */ 4065 for (inp = info->input_bfds; inp != NULL; inp = inp->link.next) 4066 { 4067 asection *sec; 4068 4069 for (sec = inp->sections; sec != NULL; sec = sec->next) 4070 { 4071 struct bfd_elf_section_data *elf_sec = elf_section_data (sec); 4072 Elf_Internal_Shdr *hdr = &elf_sec->this_hdr; 4073 4074 if (!hdr || hdr->sh_type != SHT_C6000_UNWIND) 4075 continue; 4076 4077 if (elf_sec->linked_to) 4078 { 4079 Elf_Internal_Shdr *linked_hdr 4080 = &elf_section_data (elf_sec->linked_to)->this_hdr; 4081 struct _tic6x_elf_section_data *linked_sec_tic6x_data 4082 = get_tic6x_elf_section_data (linked_hdr->bfd_section); 4083 4084 if (linked_sec_tic6x_data == NULL) 4085 continue; 4086 4087 /* Link this .c6xabi.exidx section back from the 4088 text section it describes. */ 4089 linked_sec_tic6x_data->u.text.tic6x_exidx_sec = sec; 4090 } 4091 } 4092 } 4093 4094 /* Walk all text sections in order of increasing VMA. Eilminate duplicate 4095 index table entries (EXIDX_CANTUNWIND and inlined unwind opcodes), 4096 and add EXIDX_CANTUNWIND entries for sections with no unwind table data. */ 4097 4098 for (i = 0; i < num_text_sections; i++) 4099 { 4100 asection *sec = text_section_order[i]; 4101 asection *exidx_sec; 4102 struct _tic6x_elf_section_data *tic6x_data 4103 = get_tic6x_elf_section_data (sec); 4104 struct _tic6x_elf_section_data *exidx_data; 4105 bfd_byte *contents = NULL; 4106 int deleted_exidx_bytes = 0; 4107 bfd_vma j; 4108 tic6x_unwind_table_edit *unwind_edit_head = NULL; 4109 tic6x_unwind_table_edit *unwind_edit_tail = NULL; 4110 Elf_Internal_Shdr *hdr; 4111 bfd *ibfd; 4112 4113 if (tic6x_data == NULL) 4114 continue; 4115 4116 exidx_sec = tic6x_data->u.text.tic6x_exidx_sec; 4117 if (exidx_sec == NULL) 4118 { 4119 /* Section has no unwind data. */ 4120 if (last_unwind_type == 0 || !last_exidx_sec) 4121 continue; 4122 4123 /* Ignore zero sized sections. */ 4124 if (sec->size == 0) 4125 continue; 4126 4127 elf32_tic6x_insert_cantunwind_after (last_text_sec, last_exidx_sec); 4128 last_unwind_type = 0; 4129 continue; 4130 } 4131 4132 /* Skip /DISCARD/ sections. */ 4133 if (bfd_is_abs_section (exidx_sec->output_section)) 4134 continue; 4135 4136 hdr = &elf_section_data (exidx_sec)->this_hdr; 4137 if (hdr->sh_type != SHT_C6000_UNWIND) 4138 continue; 4139 4140 exidx_data = get_tic6x_elf_section_data (exidx_sec); 4141 if (exidx_data == NULL) 4142 continue; 4143 4144 ibfd = exidx_sec->owner; 4145 4146 if (hdr->contents != NULL) 4147 contents = hdr->contents; 4148 else if (! bfd_malloc_and_get_section (ibfd, exidx_sec, &contents)) 4149 /* An error? */ 4150 continue; 4151 4152 for (j = 0; j < hdr->sh_size; j += 8) 4153 { 4154 unsigned int second_word = bfd_get_32 (ibfd, contents + j + 4); 4155 int unwind_type; 4156 int elide = 0; 4157 4158 /* An EXIDX_CANTUNWIND entry. */ 4159 if (second_word == 1) 4160 { 4161 if (last_unwind_type == 0) 4162 elide = 1; 4163 unwind_type = 0; 4164 } 4165 /* Inlined unwinding data. Merge if equal to previous. */ 4166 else if ((second_word & 0x80000000) != 0) 4167 { 4168 if (merge_exidx_entries 4169 && last_second_word == second_word 4170 && last_unwind_type == 1) 4171 elide = 1; 4172 unwind_type = 1; 4173 last_second_word = second_word; 4174 } 4175 /* Normal table entry. In theory we could merge these too, 4176 but duplicate entries are likely to be much less common. */ 4177 else 4178 unwind_type = 2; 4179 4180 if (elide) 4181 { 4182 elf32_tic6x_add_unwind_table_edit (&unwind_edit_head, 4183 &unwind_edit_tail, DELETE_EXIDX_ENTRY, NULL, j / 8); 4184 4185 deleted_exidx_bytes += 8; 4186 } 4187 4188 last_unwind_type = unwind_type; 4189 } 4190 4191 /* Free contents if we allocated it ourselves. */ 4192 if (contents != hdr->contents) 4193 free (contents); 4194 4195 /* Record edits to be applied later (in elf32_tic6x_write_section). */ 4196 exidx_data->u.exidx.unwind_edit_list = unwind_edit_head; 4197 exidx_data->u.exidx.unwind_edit_tail = unwind_edit_tail; 4198 4199 if (deleted_exidx_bytes > 0) 4200 elf32_tic6x_adjust_exidx_size (exidx_sec, -deleted_exidx_bytes); 4201 4202 last_exidx_sec = exidx_sec; 4203 last_text_sec = sec; 4204 } 4205 4206 /* Add terminating CANTUNWIND entry. */ 4207 if (last_exidx_sec && last_unwind_type != 0) 4208 elf32_tic6x_insert_cantunwind_after (last_text_sec, last_exidx_sec); 4209 4210 return TRUE; 4211 } 4212 4213 /* Add ADDEND to lower 31 bits of VAL, leaving other bits unmodified. */ 4214 4215 static unsigned long 4216 elf32_tic6x_add_low31 (unsigned long val, bfd_vma addend) 4217 { 4218 return (val & ~0x7ffffffful) | ((val + addend) & 0x7ffffffful); 4219 } 4220 4221 /* Copy an .c6xabi.exidx table entry, adding OFFSET to (applied) PREL31 4222 relocations. OFFSET is in bytes, and will be scaled before encoding. */ 4223 4224 4225 static void 4226 elf32_tic6x_copy_exidx_entry (bfd *output_bfd, bfd_byte *to, bfd_byte *from, 4227 bfd_vma offset) 4228 { 4229 unsigned long first_word = bfd_get_32 (output_bfd, from); 4230 unsigned long second_word = bfd_get_32 (output_bfd, from + 4); 4231 4232 offset >>= 1; 4233 /* High bit of first word is supposed to be zero. */ 4234 if ((first_word & 0x80000000ul) == 0) 4235 first_word = elf32_tic6x_add_low31 (first_word, offset); 4236 4237 /* If the high bit of the first word is clear, and the bit pattern is not 0x1 4238 (EXIDX_CANTUNWIND), this is an offset to an .c6xabi.extab entry. */ 4239 if ((second_word != 0x1) && ((second_word & 0x80000000ul) == 0)) 4240 second_word = elf32_tic6x_add_low31 (second_word, offset); 4241 4242 bfd_put_32 (output_bfd, first_word, to); 4243 bfd_put_32 (output_bfd, second_word, to + 4); 4244 } 4245 4246 /* Do the actual mangling of exception index tables. */ 4247 4248 static bfd_boolean 4249 elf32_tic6x_write_section (bfd *output_bfd, 4250 struct bfd_link_info *link_info, 4251 asection *sec, 4252 bfd_byte *contents) 4253 { 4254 _tic6x_elf_section_data *tic6x_data; 4255 struct elf32_tic6x_link_hash_table *globals 4256 = elf32_tic6x_hash_table (link_info); 4257 bfd_vma offset = sec->output_section->vma + sec->output_offset; 4258 4259 if (globals == NULL) 4260 return FALSE; 4261 4262 /* If this section has not been allocated an _tic6x_elf_section_data 4263 structure then we cannot record anything. */ 4264 tic6x_data = get_tic6x_elf_section_data (sec); 4265 if (tic6x_data == NULL) 4266 return FALSE; 4267 4268 if (tic6x_data->elf.this_hdr.sh_type != SHT_C6000_UNWIND) 4269 return FALSE; 4270 4271 tic6x_unwind_table_edit *edit_node 4272 = tic6x_data->u.exidx.unwind_edit_list; 4273 /* Now, sec->size is the size of the section we will write. The original 4274 size (before we merged duplicate entries and inserted EXIDX_CANTUNWIND 4275 markers) was sec->rawsize. (This isn't the case if we perform no 4276 edits, then rawsize will be zero and we should use size). */ 4277 bfd_byte *edited_contents = (bfd_byte *) bfd_malloc (sec->size); 4278 unsigned int input_size = sec->rawsize ? sec->rawsize : sec->size; 4279 unsigned int in_index, out_index; 4280 bfd_vma add_to_offsets = 0; 4281 4282 for (in_index = 0, out_index = 0; in_index * 8 < input_size || edit_node;) 4283 { 4284 if (edit_node) 4285 { 4286 unsigned int edit_index = edit_node->index; 4287 4288 if (in_index < edit_index && in_index * 8 < input_size) 4289 { 4290 elf32_tic6x_copy_exidx_entry (output_bfd, 4291 edited_contents + out_index * 8, 4292 contents + in_index * 8, add_to_offsets); 4293 out_index++; 4294 in_index++; 4295 } 4296 else if (in_index == edit_index 4297 || (in_index * 8 >= input_size 4298 && edit_index == UINT_MAX)) 4299 { 4300 switch (edit_node->type) 4301 { 4302 case DELETE_EXIDX_ENTRY: 4303 in_index++; 4304 add_to_offsets += 8; 4305 break; 4306 4307 case INSERT_EXIDX_CANTUNWIND_AT_END: 4308 { 4309 asection *text_sec = edit_node->linked_section; 4310 bfd_vma text_offset = text_sec->output_section->vma 4311 + text_sec->output_offset 4312 + text_sec->size; 4313 bfd_vma exidx_offset = offset + out_index * 8; 4314 unsigned long prel31_offset; 4315 4316 /* Note: this is meant to be equivalent to an 4317 R_C6000_PREL31 relocation. These synthetic 4318 EXIDX_CANTUNWIND markers are not relocated by the 4319 usual BFD method. */ 4320 prel31_offset = ((text_offset - exidx_offset) >> 1) 4321 & 0x7ffffffful; 4322 4323 /* First address we can't unwind. */ 4324 bfd_put_32 (output_bfd, prel31_offset, 4325 &edited_contents[out_index * 8]); 4326 4327 /* Code for EXIDX_CANTUNWIND. */ 4328 bfd_put_32 (output_bfd, 0x1, 4329 &edited_contents[out_index * 8 + 4]); 4330 4331 out_index++; 4332 add_to_offsets -= 8; 4333 } 4334 break; 4335 } 4336 4337 edit_node = edit_node->next; 4338 } 4339 } 4340 else 4341 { 4342 /* No more edits, copy remaining entries verbatim. */ 4343 elf32_tic6x_copy_exidx_entry (output_bfd, 4344 edited_contents + out_index * 8, 4345 contents + in_index * 8, add_to_offsets); 4346 out_index++; 4347 in_index++; 4348 } 4349 } 4350 4351 if (!(sec->flags & SEC_EXCLUDE) && !(sec->flags & SEC_NEVER_LOAD)) 4352 bfd_set_section_contents (output_bfd, sec->output_section, 4353 edited_contents, 4354 (file_ptr) sec->output_offset, sec->size); 4355 4356 return TRUE; 4357 } 4358 4359 #define TARGET_LITTLE_SYM tic6x_elf32_le_vec 4360 #define TARGET_LITTLE_NAME "elf32-tic6x-le" 4361 #define TARGET_BIG_SYM tic6x_elf32_be_vec 4362 #define TARGET_BIG_NAME "elf32-tic6x-be" 4363 #define ELF_ARCH bfd_arch_tic6x 4364 #define ELF_TARGET_ID TIC6X_ELF_DATA 4365 #define ELF_MACHINE_CODE EM_TI_C6000 4366 #define ELF_MAXPAGESIZE 0x1000 4367 #define bfd_elf32_bfd_reloc_type_lookup elf32_tic6x_reloc_type_lookup 4368 #define bfd_elf32_bfd_reloc_name_lookup elf32_tic6x_reloc_name_lookup 4369 #define bfd_elf32_bfd_merge_private_bfd_data elf32_tic6x_merge_private_bfd_data 4370 #define bfd_elf32_mkobject elf32_tic6x_mkobject 4371 #define bfd_elf32_bfd_link_hash_table_create elf32_tic6x_link_hash_table_create 4372 #define bfd_elf32_new_section_hook elf32_tic6x_new_section_hook 4373 #define elf_backend_stack_align 8 4374 #define elf_backend_can_gc_sections 1 4375 #define elf_backend_default_use_rela_p 1 4376 #define elf_backend_may_use_rel_p 1 4377 #define elf_backend_may_use_rela_p 1 4378 #define elf_backend_obj_attrs_arg_type elf32_tic6x_obj_attrs_arg_type 4379 #define elf_backend_obj_attrs_handle_unknown elf32_tic6x_obj_attrs_handle_unknown 4380 #define elf_backend_obj_attrs_order elf32_tic6x_obj_attrs_order 4381 #define elf_backend_obj_attrs_section ".c6xabi.attributes" 4382 #define elf_backend_obj_attrs_section_type SHT_C6000_ATTRIBUTES 4383 #define elf_backend_obj_attrs_vendor "c6xabi" 4384 #define elf_backend_can_refcount 1 4385 #define elf_backend_want_got_plt 1 4386 #define elf_backend_want_dynbss 1 4387 #define elf_backend_want_dynrelro 1 4388 #define elf_backend_plt_readonly 1 4389 #define elf_backend_rela_normal 1 4390 #define elf_backend_got_header_size 8 4391 #define elf_backend_fake_sections elf32_tic6x_fake_sections 4392 #define elf_backend_gc_sweep_hook elf32_tic6x_gc_sweep_hook 4393 #define elf_backend_gc_mark_extra_sections elf32_tic6x_gc_mark_extra_sections 4394 #define elf_backend_create_dynamic_sections \ 4395 elf32_tic6x_create_dynamic_sections 4396 #define elf_backend_adjust_dynamic_symbol \ 4397 elf32_tic6x_adjust_dynamic_symbol 4398 #define elf_backend_check_relocs elf32_tic6x_check_relocs 4399 #define elf_backend_add_symbol_hook elf32_tic6x_add_symbol_hook 4400 #define elf_backend_symbol_processing elf32_tic6x_symbol_processing 4401 #define elf_backend_link_output_symbol_hook \ 4402 elf32_tic6x_link_output_symbol_hook 4403 #define elf_backend_section_from_bfd_section \ 4404 elf32_tic6x_section_from_bfd_section 4405 #define elf_backend_relocate_section elf32_tic6x_relocate_section 4406 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible 4407 #define elf_backend_finish_dynamic_symbol \ 4408 elf32_tic6x_finish_dynamic_symbol 4409 #define elf_backend_always_size_sections \ 4410 elf32_tic6x_always_size_sections 4411 #define elf_backend_size_dynamic_sections \ 4412 elf32_tic6x_size_dynamic_sections 4413 #define elf_backend_finish_dynamic_sections \ 4414 elf32_tic6x_finish_dynamic_sections 4415 #define bfd_elf32_bfd_final_link \ 4416 elf32_tic6x_final_link 4417 #define elf_backend_write_section elf32_tic6x_write_section 4418 #define elf_info_to_howto elf32_tic6x_info_to_howto 4419 #define elf_info_to_howto_rel elf32_tic6x_info_to_howto_rel 4420 4421 #undef elf_backend_omit_section_dynsym 4422 #define elf_backend_omit_section_dynsym elf32_tic6x_link_omit_section_dynsym 4423 #define elf_backend_plt_sym_val elf32_tic6x_plt_sym_val 4424 4425 #include "elf32-target.h" 4426 4427 #undef elf32_bed 4428 #define elf32_bed elf32_tic6x_linux_bed 4429 4430 #undef TARGET_LITTLE_SYM 4431 #define TARGET_LITTLE_SYM tic6x_elf32_linux_le_vec 4432 #undef TARGET_LITTLE_NAME 4433 #define TARGET_LITTLE_NAME "elf32-tic6x-linux-le" 4434 #undef TARGET_BIG_SYM 4435 #define TARGET_BIG_SYM tic6x_elf32_linux_be_vec 4436 #undef TARGET_BIG_NAME 4437 #define TARGET_BIG_NAME "elf32-tic6x-linux-be" 4438 #undef ELF_OSABI 4439 #define ELF_OSABI ELFOSABI_C6000_LINUX 4440 4441 #include "elf32-target.h" 4442 4443 #undef elf32_bed 4444 #define elf32_bed elf32_tic6x_elf_bed 4445 4446 #undef TARGET_LITTLE_SYM 4447 #define TARGET_LITTLE_SYM tic6x_elf32_c6000_le_vec 4448 #undef TARGET_LITTLE_NAME 4449 #define TARGET_LITTLE_NAME "elf32-tic6x-elf-le" 4450 #undef TARGET_BIG_SYM 4451 #define TARGET_BIG_SYM tic6x_elf32_c6000_be_vec 4452 #undef TARGET_BIG_NAME 4453 #define TARGET_BIG_NAME "elf32-tic6x-elf-be" 4454 #undef ELF_OSABI 4455 #define ELF_OSABI ELFOSABI_C6000_ELFABI 4456 4457 #include "elf32-target.h" 4458