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