1/* SuperH SH64-specific support for 32-bit ELF 2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010 3 Free Software Foundation, Inc. 4 5 This file is part of BFD, the Binary File Descriptor library. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 20 MA 02110-1301, USA. */ 21 22#define SH64_ELF 23 24#include "sysdep.h" 25#include "bfd.h" 26#include "elf-bfd.h" 27#include "../opcodes/sh64-opc.h" 28#include "elf32-sh64.h" 29 30/* Add a suffix for datalabel indirection symbols. It must not match any 31 other symbols; user symbols with or without version or other 32 decoration. It must only be used internally and not emitted by any 33 means. */ 34#define DATALABEL_SUFFIX " DL" 35 36/* Used to hold data for function called through bfd_map_over_sections. */ 37struct sh64_find_section_vma_data 38 { 39 asection *section; 40 bfd_vma addr; 41 }; 42 43static bfd_boolean sh64_elf_new_section_hook 44 (bfd *, asection *); 45static bfd_boolean sh64_elf_copy_private_data 46 (bfd *, bfd *); 47static bfd_boolean sh64_elf_merge_private_data 48 (bfd *, bfd *); 49static bfd_boolean sh64_elf_fake_sections 50 (bfd *, Elf_Internal_Shdr *, asection *); 51static bfd_boolean sh64_elf_set_private_flags 52 (bfd *, flagword); 53static bfd_boolean sh64_elf_set_mach_from_flags 54 (bfd *); 55static bfd_boolean shmedia_prepare_reloc 56 (struct bfd_link_info *, bfd *, asection *, bfd_byte *, 57 const Elf_Internal_Rela *, bfd_vma *); 58static int sh64_elf_get_symbol_type 59 (Elf_Internal_Sym *, int); 60static bfd_boolean sh64_elf_add_symbol_hook 61 (bfd *, struct bfd_link_info *, Elf_Internal_Sym *, const char **, 62 flagword *, asection **, bfd_vma *); 63static int sh64_elf_link_output_symbol_hook 64 (struct bfd_link_info *, const char *, Elf_Internal_Sym *, asection *, 65 struct elf_link_hash_entry *); 66static bfd_boolean sh64_backend_section_from_shdr 67 (bfd *, Elf_Internal_Shdr *, const char *, int); 68static void sh64_elf_final_write_processing 69 (bfd *, bfd_boolean); 70static bfd_boolean sh64_bfd_elf_copy_private_section_data 71 (bfd *, asection *, bfd *, asection *); 72static void sh64_find_section_for_address 73 (bfd *, asection *, void *); 74 75/* Let elf32-sh.c handle the "bfd_" definitions, so we only have to 76 intrude with an #ifndef around the function definition. */ 77#define sh_elf_copy_private_data sh64_elf_copy_private_data 78#define sh_elf_merge_private_data sh64_elf_merge_private_data 79#define sh_elf_set_private_flags sh64_elf_set_private_flags 80/* Typo in elf32-sh.c (and unlinear name). */ 81#define bfd_elf32_bfd_set_private_flags sh64_elf_set_private_flags 82#define sh_elf_set_mach_from_flags sh64_elf_set_mach_from_flags 83 84#define elf_backend_sign_extend_vma 1 85#define elf_backend_fake_sections sh64_elf_fake_sections 86#define elf_backend_get_symbol_type sh64_elf_get_symbol_type 87#define elf_backend_add_symbol_hook sh64_elf_add_symbol_hook 88#define elf_backend_link_output_symbol_hook \ 89 sh64_elf_link_output_symbol_hook 90#define elf_backend_merge_symbol_attribute sh64_elf_merge_symbol_attribute 91#define elf_backend_final_write_processing sh64_elf_final_write_processing 92#define elf_backend_section_from_shdr sh64_backend_section_from_shdr 93#define elf_backend_special_sections sh64_elf_special_sections 94#define elf_backend_section_flags sh64_elf_section_flags 95 96#define bfd_elf32_new_section_hook sh64_elf_new_section_hook 97 98/* For objcopy, we need to set up sh64_elf_section_data (asection *) from 99 incoming section flags. This is otherwise done in sh64elf.em when 100 linking or tc-sh64.c when assembling. */ 101#define bfd_elf32_bfd_copy_private_section_data \ 102 sh64_bfd_elf_copy_private_section_data 103 104/* This COFF-only function (only compiled with COFF support, making 105 ELF-only chains problematic) returns TRUE early for SH4, so let's just 106 define it TRUE here. */ 107#define _bfd_sh_align_load_span(a,b,c,d,e,f,g,h,i,j) \ 108 ((void) f, (void) h, (void) i, TRUE) 109 110#define GOT_BIAS (-((long)-32768)) 111#define INCLUDE_SHMEDIA 112#define SH_TARGET_ALREADY_DEFINED 113#include "elf32-sh.c" 114 115/* Tack some extra info on struct bfd_elf_section_data. */ 116 117static bfd_boolean 118sh64_elf_new_section_hook (bfd *abfd, asection *sec) 119{ 120 if (!sec->used_by_bfd) 121 { 122 struct _sh64_elf_section_data *sdata; 123 bfd_size_type amt = sizeof (*sdata); 124 125 sdata = bfd_zalloc (abfd, amt); 126 if (sdata == NULL) 127 return FALSE; 128 sec->used_by_bfd = sdata; 129 } 130 131 return _bfd_elf_new_section_hook (abfd, sec); 132} 133 134/* Set the SHF_SH5_ISA32 flag for ISA SHmedia code sections, and pass 135 through SHT_SH5_CR_SORTED on a sorted .cranges section. */ 136 137bfd_boolean 138sh64_elf_fake_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 139 Elf_Internal_Shdr *elf_section_hdr, 140 asection *asect) 141{ 142 if (sh64_elf_section_data (asect)->sh64_info != NULL) 143 elf_section_hdr->sh_flags 144 |= sh64_elf_section_data (asect)->sh64_info->contents_flags; 145 146 /* If this section has the SEC_SORT_ENTRIES flag set, it is a sorted 147 .cranges section passing through objcopy. */ 148 if ((bfd_get_section_flags (output_bfd, asect) & SEC_SORT_ENTRIES) != 0 149 && strcmp (bfd_get_section_name (output_bfd, asect), 150 SH64_CRANGES_SECTION_NAME) == 0) 151 elf_section_hdr->sh_type = SHT_SH5_CR_SORTED; 152 153 return TRUE; 154} 155 156static bfd_boolean 157sh64_elf_set_mach_from_flags (bfd *abfd) 158{ 159 flagword flags = elf_elfheader (abfd)->e_flags; 160 161 switch (flags & EF_SH_MACH_MASK) 162 { 163 case EF_SH5: 164 /* These are fit to execute on SH5. Just one but keep the switch 165 construct to make additions easy. */ 166 bfd_default_set_arch_mach (abfd, bfd_arch_sh, bfd_mach_sh5); 167 break; 168 169 default: 170 bfd_set_error (bfd_error_wrong_format); 171 return FALSE; 172 } 173 174 return TRUE; 175} 176 177static bfd_boolean 178sh64_elf_section_flags (flagword *flags, 179 const Elf_Internal_Shdr *hdr) 180{ 181 if (hdr->bfd_section == NULL) 182 return FALSE; 183 184 if (strcmp (hdr->bfd_section->name, SH64_CRANGES_SECTION_NAME) == 0) 185 *flags |= SEC_DEBUGGING; 186 187 return TRUE; 188} 189 190static bfd_boolean 191sh64_elf_copy_private_data (bfd * ibfd, bfd * obfd) 192{ 193 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour 194 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 195 return TRUE; 196 197 BFD_ASSERT (!elf_flags_init (obfd) 198 || (elf_elfheader (obfd)->e_flags 199 == elf_elfheader (ibfd)->e_flags)); 200 201 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; 202 return TRUE; 203} 204 205static bfd_boolean 206sh64_elf_merge_private_data (bfd *ibfd, bfd *obfd) 207{ 208 flagword old_flags, new_flags; 209 210 if (! _bfd_generic_verify_endian_match (ibfd, obfd)) 211 return FALSE; 212 213 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour 214 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 215 return TRUE; 216 217 if (bfd_get_arch_size (ibfd) != bfd_get_arch_size (obfd)) 218 { 219 const char *msg; 220 221 if (bfd_get_arch_size (ibfd) == 32 222 && bfd_get_arch_size (obfd) == 64) 223 msg = _("%s: compiled as 32-bit object and %s is 64-bit"); 224 else if (bfd_get_arch_size (ibfd) == 64 225 && bfd_get_arch_size (obfd) == 32) 226 msg = _("%s: compiled as 64-bit object and %s is 32-bit"); 227 else 228 msg = _("%s: object size does not match that of target %s"); 229 230 (*_bfd_error_handler) (msg, bfd_get_filename (ibfd), 231 bfd_get_filename (obfd)); 232 bfd_set_error (bfd_error_wrong_format); 233 return FALSE; 234 } 235 236 old_flags = elf_elfheader (obfd)->e_flags; 237 new_flags = elf_elfheader (ibfd)->e_flags; 238 if (! elf_flags_init (obfd)) 239 { 240 /* This happens when ld starts out with a 'blank' output file. */ 241 elf_flags_init (obfd) = TRUE; 242 elf_elfheader (obfd)->e_flags = old_flags = new_flags; 243 } 244 /* We don't allow linking in non-SH64 code. */ 245 else if ((new_flags & EF_SH_MACH_MASK) != EF_SH5) 246 { 247 (*_bfd_error_handler) 248 ("%s: uses non-SH64 instructions while previous modules use SH64 instructions", 249 bfd_get_filename (ibfd)); 250 bfd_set_error (bfd_error_bad_value); 251 return FALSE; 252 } 253 254 /* I can't think of anything sane other than old_flags being EF_SH5 and 255 that we need to preserve that. */ 256 elf_elfheader (obfd)->e_flags = old_flags; 257 return sh64_elf_set_mach_from_flags (obfd); 258} 259 260/* Handle a SH64-specific section when reading an object file. This 261 is called when bfd_section_from_shdr finds a section with an unknown 262 type. 263 264 We only recognize SHT_SH5_CR_SORTED, on the .cranges section. */ 265 266bfd_boolean 267sh64_backend_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr, 268 const char *name, int shindex) 269{ 270 flagword flags = 0; 271 272 /* We do like MIPS with a bit switch for recognized types, and returning 273 FALSE for a recognized section type with an unexpected name. Right 274 now we only have one recognized type, but that might change. */ 275 switch (hdr->sh_type) 276 { 277 case SHT_SH5_CR_SORTED: 278 if (strcmp (name, SH64_CRANGES_SECTION_NAME) != 0) 279 return FALSE; 280 281 /* We set the SEC_SORT_ENTRIES flag so it can be passed on to 282 sh64_elf_fake_sections, keeping SHT_SH5_CR_SORTED if this object 283 passes through objcopy. Perhaps it is brittle; the flag can 284 suddenly be used by other BFD parts, but it seems not really used 285 anywhere at the moment. */ 286 flags = SEC_DEBUGGING | SEC_SORT_ENTRIES; 287 break; 288 289 default: 290 return FALSE; 291 } 292 293 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) 294 return FALSE; 295 296 if (flags 297 && ! bfd_set_section_flags (abfd, hdr->bfd_section, 298 bfd_get_section_flags (abfd, 299 hdr->bfd_section) 300 | flags)) 301 return FALSE; 302 303 return TRUE; 304} 305 306/* In contrast to sh64_backend_section_from_shdr, this is called for all 307 sections, but only when copying sections, not when linking or 308 assembling. We need to set up the sh64_elf_section_data (asection *) 309 structure for the SH64 ELF section flags to be copied correctly. */ 310 311bfd_boolean 312sh64_bfd_elf_copy_private_section_data (bfd *ibfd, asection *isec, 313 bfd *obfd, asection *osec) 314{ 315 struct sh64_section_data *sh64_sec_data; 316 317 if (ibfd->xvec->flavour != bfd_target_elf_flavour 318 || obfd->xvec->flavour != bfd_target_elf_flavour) 319 return TRUE; 320 321 if (! _bfd_elf_copy_private_section_data (ibfd, isec, obfd, osec)) 322 return FALSE; 323 324 sh64_sec_data = sh64_elf_section_data (isec)->sh64_info; 325 if (sh64_sec_data == NULL) 326 { 327 sh64_sec_data = bfd_zmalloc (sizeof (struct sh64_section_data)); 328 329 if (sh64_sec_data == NULL) 330 return FALSE; 331 332 sh64_sec_data->contents_flags 333 = (elf_section_data (isec)->this_hdr.sh_flags 334 & (SHF_SH5_ISA32 | SHF_SH5_ISA32_MIXED)); 335 336 sh64_elf_section_data (osec)->sh64_info = sh64_sec_data; 337 } 338 339 return TRUE; 340} 341 342/* Function to keep SH64 specific file flags. */ 343 344static bfd_boolean 345sh64_elf_set_private_flags (bfd *abfd, flagword flags) 346{ 347 BFD_ASSERT (! elf_flags_init (abfd) 348 || elf_elfheader (abfd)->e_flags == flags); 349 350 elf_elfheader (abfd)->e_flags = flags; 351 elf_flags_init (abfd) = TRUE; 352 return sh64_elf_set_mach_from_flags (abfd); 353} 354 355/* Called when writing out an object file to decide the type of a symbol. */ 356 357static int 358sh64_elf_get_symbol_type (Elf_Internal_Sym *elf_sym, int type) 359{ 360 if (ELF_ST_TYPE (elf_sym->st_info) == STT_DATALABEL) 361 return STT_DATALABEL; 362 363 return type; 364} 365 366/* Hook called by the linker routine which adds symbols from an object 367 file. We must make indirect symbols for undefined symbols marked with 368 STT_DATALABEL, so relocations passing them will pick up that attribute 369 and neutralize STO_SH5_ISA32 found on the symbol definition. 370 371 There is a problem, though: We want to fill in the hash-table entry for 372 this symbol and signal to the caller that no further processing is 373 needed. But we don't have the index for this hash-table entry. We 374 rely here on that the current entry is the first hash-entry with NULL, 375 which seems brittle. Also, iterating over the hash-table to find that 376 entry is a linear operation on the number of symbols in this input 377 file, and this function should take constant time, so that's not good 378 too. Only comfort is that DataLabel references should only be found in 379 hand-written assembly code and thus be rare. FIXME: Talk maintainers 380 into adding an option to elf_add_symbol_hook (preferably) for the index 381 or the hash entry, alternatively adding the index to Elf_Internal_Sym 382 (not so good). */ 383 384static bfd_boolean 385sh64_elf_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, 386 Elf_Internal_Sym *sym, const char **namep, 387 flagword *flagsp ATTRIBUTE_UNUSED, 388 asection **secp, bfd_vma *valp) 389{ 390 /* We want to do this for relocatable as well as final linking. */ 391 if (ELF_ST_TYPE (sym->st_info) == STT_DATALABEL 392 && is_elf_hash_table (info->hash)) 393 { 394 struct elf_link_hash_entry *h; 395 396 /* For relocatable links, we register the DataLabel sym in its own 397 right, and tweak the name when it's output. Otherwise, we make 398 an indirect symbol of it. */ 399 flagword flags 400 = info->relocatable || info->emitrelocations 401 ? BSF_GLOBAL : BSF_GLOBAL | BSF_INDIRECT; 402 403 char *dl_name 404 = bfd_malloc (strlen (*namep) + sizeof (DATALABEL_SUFFIX)); 405 struct elf_link_hash_entry ** sym_hash = elf_sym_hashes (abfd); 406 407 BFD_ASSERT (sym_hash != NULL); 408 409 /* Allocation may fail. */ 410 if (dl_name == NULL) 411 return FALSE; 412 413 strcpy (dl_name, *namep); 414 strcat (dl_name, DATALABEL_SUFFIX); 415 416 h = (struct elf_link_hash_entry *) 417 bfd_link_hash_lookup (info->hash, dl_name, FALSE, FALSE, FALSE); 418 419 if (h == NULL) 420 { 421 /* No previous datalabel symbol. Make one. */ 422 struct bfd_link_hash_entry *bh = NULL; 423 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 424 425 if (! _bfd_generic_link_add_one_symbol (info, abfd, dl_name, 426 flags, *secp, *valp, 427 *namep, FALSE, 428 bed->collect, &bh)) 429 { 430 free (dl_name); 431 return FALSE; 432 } 433 434 h = (struct elf_link_hash_entry *) bh; 435 h->non_elf = 0; 436 h->type = STT_DATALABEL; 437 } 438 else 439 /* If a new symbol was created, it holds the allocated name. 440 Otherwise, we don't need it anymore and should deallocate it. */ 441 free (dl_name); 442 443 if (h->type != STT_DATALABEL 444 || ((info->relocatable || info->emitrelocations) 445 && h->root.type != bfd_link_hash_undefined) 446 || (! info->relocatable && !info->emitrelocations 447 && h->root.type != bfd_link_hash_indirect)) 448 { 449 /* Make sure we don't get confused on invalid input. */ 450 (*_bfd_error_handler) 451 (_("%s: encountered datalabel symbol in input"), 452 bfd_get_filename (abfd)); 453 bfd_set_error (bfd_error_bad_value); 454 return FALSE; 455 } 456 457 /* Now find the hash-table slot for this entry and fill it in. */ 458 while (*sym_hash != NULL) 459 sym_hash++; 460 *sym_hash = h; 461 462 /* Signal to caller to skip this symbol - we've handled it. */ 463 *namep = NULL; 464 } 465 466 return TRUE; 467} 468 469/* This hook function is called before the linker writes out a global 470 symbol. For relocatable links, DataLabel symbols will be present in 471 linker output. We cut off the special suffix on those symbols, so the 472 right name appears in the output. 473 474 When linking and emitting relocations, there can appear global symbols 475 that are not referenced by relocs, but rather only implicitly through 476 DataLabel references, a relation that is not visible to the linker. 477 Since no stripping of global symbols in done when doing such linking, 478 we don't need to look up and make sure to emit the main symbol for each 479 DataLabel symbol. */ 480 481static int 482sh64_elf_link_output_symbol_hook (struct bfd_link_info *info, 483 const char *cname, 484 Elf_Internal_Sym *sym, 485 asection *input_sec ATTRIBUTE_UNUSED, 486 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) 487{ 488 char *name = (char *) cname; 489 490 if (info->relocatable || info->emitrelocations) 491 { 492 if (ELF_ST_TYPE (sym->st_info) == STT_DATALABEL) 493 name[strlen (name) - strlen (DATALABEL_SUFFIX)] = 0; 494 } 495 496 return 1; 497} 498 499/* Check a SH64-specific reloc and put the value to relocate to into 500 RELOCATION, ready to pass to _bfd_final_link_relocate. Return FALSE if 501 bad value, TRUE if ok. */ 502 503static bfd_boolean 504shmedia_prepare_reloc (struct bfd_link_info *info, bfd *abfd, 505 asection *input_section, bfd_byte *contents, 506 const Elf_Internal_Rela *rel, bfd_vma *relocation) 507{ 508 bfd_vma disp, dropped; 509 510 switch (ELF32_R_TYPE (rel->r_info)) 511 { 512 case R_SH_PT_16: 513 /* Check the lowest bit of the destination field. If it is 1, we 514 check the ISA type of the destination (i.e. the low bit of the 515 "relocation" value, and emit an error if the instruction does not 516 match). If it is 0, we change a PTA to PTB. There should never 517 be a PTB that should change to a PTA; that indicates a toolchain 518 error; a mismatch with GAS. */ 519 { 520 char *msg = NULL; 521 bfd_vma insn = bfd_get_32 (abfd, contents + rel->r_offset); 522 523 if (insn & (1 << 10)) 524 { 525 /* Check matching insn and ISA (address of target). */ 526 if ((insn & SHMEDIA_PTB_BIT) != 0 527 && ((*relocation + rel->r_addend) & 1) != 0) 528 msg = _("PTB mismatch: a SHmedia address (bit 0 == 1)"); 529 else if ((insn & SHMEDIA_PTB_BIT) == 0 530 && ((*relocation + rel->r_addend) & 1) == 0) 531 msg = _("PTA mismatch: a SHcompact address (bit 0 == 0)"); 532 533 if (msg != NULL 534 && ! ((*info->callbacks->reloc_dangerous) 535 (info, msg, abfd, input_section, 536 rel->r_offset))) 537 return FALSE; 538 } 539 else 540 { 541 /* We shouldn't get here with a PTB insn and a R_SH_PT_16. It 542 means GAS output does not match expectations; a PTA or PTB 543 expressed as such (or a PT found at assembly to be PTB) 544 would match the test above, and PT expansion with an 545 unknown destination (or when relaxing) will get us here. */ 546 if ((insn & SHMEDIA_PTB_BIT) != 0) 547 { 548 (*_bfd_error_handler) 549 (_("%s: GAS error: unexpected PTB insn with R_SH_PT_16"), 550 bfd_get_filename (input_section->owner)); 551 return FALSE; 552 } 553 554 /* Change the PTA to a PTB, if destination indicates so. */ 555 if (((*relocation + rel->r_addend) & 1) == 0) 556 bfd_put_32 (abfd, insn | SHMEDIA_PTB_BIT, 557 contents + rel->r_offset); 558 } 559 } 560 561 case R_SH_SHMEDIA_CODE: 562 case R_SH_DIR5U: 563 case R_SH_DIR6S: 564 case R_SH_DIR6U: 565 case R_SH_DIR10S: 566 case R_SH_DIR10SW: 567 case R_SH_DIR10SL: 568 case R_SH_DIR10SQ: 569 case R_SH_IMMS16: 570 case R_SH_IMMU16: 571 case R_SH_IMM_LOW16: 572 case R_SH_IMM_LOW16_PCREL: 573 case R_SH_IMM_MEDLOW16: 574 case R_SH_IMM_MEDLOW16_PCREL: 575 case R_SH_IMM_MEDHI16: 576 case R_SH_IMM_MEDHI16_PCREL: 577 case R_SH_IMM_HI16: 578 case R_SH_IMM_HI16_PCREL: 579 case R_SH_64: 580 case R_SH_64_PCREL: 581 break; 582 583 default: 584 return FALSE; 585 } 586 587 disp = (*relocation & 0xf); 588 dropped = 0; 589 switch (ELF32_R_TYPE (rel->r_info)) 590 { 591 case R_SH_DIR10SW: dropped = disp & 1; break; 592 case R_SH_DIR10SL: dropped = disp & 3; break; 593 case R_SH_DIR10SQ: dropped = disp & 7; break; 594 } 595 if (dropped != 0) 596 { 597 (*_bfd_error_handler) 598 (_("%B: error: unaligned relocation type %d at %08x reloc %p\n"), 599 input_section->owner, ELF32_R_TYPE (rel->r_info), 600 (unsigned) rel->r_offset, relocation); 601 return FALSE; 602 } 603 604 return TRUE; 605} 606 607/* Helper function to locate the section holding a certain address. This 608 is called via bfd_map_over_sections. */ 609 610static void 611sh64_find_section_for_address (bfd *abfd ATTRIBUTE_UNUSED, 612 asection *section, void *data) 613{ 614 bfd_vma vma; 615 bfd_size_type size; 616 617 struct sh64_find_section_vma_data *fsec_datap 618 = (struct sh64_find_section_vma_data *) data; 619 620 /* Return if already found. */ 621 if (fsec_datap->section) 622 return; 623 624 /* If this section isn't part of the addressable contents, skip it. */ 625 if ((bfd_get_section_flags (abfd, section) & SEC_ALLOC) == 0) 626 return; 627 628 vma = bfd_get_section_vma (abfd, section); 629 if (fsec_datap->addr < vma) 630 return; 631 632 size = section->size; 633 if (fsec_datap->addr >= vma + size) 634 return; 635 636 fsec_datap->section = section; 637} 638 639/* Make sure to write out the generated entries in the .cranges section 640 when doing partial linking, and set bit 0 on the entry address if it 641 points to SHmedia code and write sorted .cranges entries when writing 642 executables (final linking and objcopy). */ 643 644static void 645sh64_elf_final_write_processing (bfd *abfd, 646 bfd_boolean linker ATTRIBUTE_UNUSED) 647{ 648 bfd_vma ld_generated_cranges_size; 649 asection *cranges 650 = bfd_get_section_by_name (abfd, SH64_CRANGES_SECTION_NAME); 651 652 /* If no new .cranges were added, the generic ELF linker parts will 653 write it all out. If not, we need to write them out when doing 654 partial linking. For a final link, we will sort them and write them 655 all out further below. */ 656 if (linker 657 && cranges != NULL 658 && elf_elfheader (abfd)->e_type != ET_EXEC 659 && (ld_generated_cranges_size 660 = sh64_elf_section_data (cranges)->sh64_info->cranges_growth) != 0) 661 { 662 bfd_vma incoming_cranges_size 663 = cranges->size - ld_generated_cranges_size; 664 665 if (! bfd_set_section_contents (abfd, cranges, 666 cranges->contents 667 + incoming_cranges_size, 668 cranges->output_offset 669 + incoming_cranges_size, 670 ld_generated_cranges_size)) 671 { 672 bfd_set_error (bfd_error_file_truncated); 673 (*_bfd_error_handler) 674 (_("%s: could not write out added .cranges entries"), 675 bfd_get_filename (abfd)); 676 } 677 } 678 679 /* Only set entry address bit 0 and sort .cranges when linking to an 680 executable; never with objcopy or strip. */ 681 if (linker && elf_elfheader (abfd)->e_type == ET_EXEC) 682 { 683 struct sh64_find_section_vma_data fsec_data; 684 sh64_elf_crange dummy; 685 686 /* For a final link, set the low bit of the entry address to 687 reflect whether or not it is a SHmedia address. 688 FIXME: Perhaps we shouldn't do this if the entry address was 689 supplied numerically, but we currently lack the infrastructure to 690 recognize that: The entry symbol, and info whether it is numeric 691 or a symbol name is kept private in the linker. */ 692 fsec_data.addr = elf_elfheader (abfd)->e_entry; 693 fsec_data.section = NULL; 694 695 bfd_map_over_sections (abfd, sh64_find_section_for_address, 696 &fsec_data); 697 if (fsec_data.section 698 && (sh64_get_contents_type (fsec_data.section, 699 elf_elfheader (abfd)->e_entry, 700 &dummy) == CRT_SH5_ISA32)) 701 elf_elfheader (abfd)->e_entry |= 1; 702 703 /* If we have a .cranges section, sort the entries. */ 704 if (cranges != NULL) 705 { 706 bfd_size_type cranges_size = cranges->size; 707 708 /* We know we always have these in memory at this time. */ 709 BFD_ASSERT (cranges->contents != NULL); 710 711 /* The .cranges may already have been sorted in the process of 712 finding out the ISA-type of the entry address. If not, we do 713 it here. */ 714 if (elf_section_data (cranges)->this_hdr.sh_type 715 != SHT_SH5_CR_SORTED) 716 { 717 qsort (cranges->contents, cranges_size / SH64_CRANGE_SIZE, 718 SH64_CRANGE_SIZE, 719 bfd_big_endian (cranges->owner) 720 ? _bfd_sh64_crange_qsort_cmpb 721 : _bfd_sh64_crange_qsort_cmpl); 722 elf_section_data (cranges)->this_hdr.sh_type 723 = SHT_SH5_CR_SORTED; 724 } 725 726 /* We need to write it out in whole as sorted. */ 727 if (! bfd_set_section_contents (abfd, cranges, 728 cranges->contents, 729 cranges->output_offset, 730 cranges_size)) 731 { 732 bfd_set_error (bfd_error_file_truncated); 733 (*_bfd_error_handler) 734 (_("%s: could not write out sorted .cranges entries"), 735 bfd_get_filename (abfd)); 736 } 737 } 738 } 739} 740 741/* Merge non visibility st_other attribute when the symbol comes from 742 a dynamic object. */ 743static void 744sh64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, 745 const Elf_Internal_Sym *isym, 746 bfd_boolean definition, 747 bfd_boolean dynamic ATTRIBUTE_UNUSED) 748{ 749 if ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) != 0) 750 { 751 unsigned char other; 752 753 /* Take the balance of OTHER from the definition. */ 754 other = (definition ? isym->st_other : h->other); 755 other &= ~ ELF_ST_VISIBILITY (-1); 756 h->other = other | ELF_ST_VISIBILITY (h->other); 757 } 758 759 return; 760} 761 762static const struct bfd_elf_special_section sh64_elf_special_sections[] = 763{ 764 { STRING_COMMA_LEN (".cranges"), 0, SHT_PROGBITS, 0 }, 765 { NULL, 0, 0, 0, 0 } 766}; 767 768#undef TARGET_BIG_SYM 769#define TARGET_BIG_SYM bfd_elf32_sh64_vec 770#undef TARGET_BIG_NAME 771#define TARGET_BIG_NAME "elf32-sh64" 772#undef TARGET_LITTLE_SYM 773#define TARGET_LITTLE_SYM bfd_elf32_sh64l_vec 774#undef TARGET_LITTLE_NAME 775#define TARGET_LITTLE_NAME "elf32-sh64l" 776 777#include "elf32-target.h" 778 779/* NetBSD support. */ 780#undef TARGET_BIG_SYM 781#define TARGET_BIG_SYM bfd_elf32_sh64nbsd_vec 782#undef TARGET_BIG_NAME 783#define TARGET_BIG_NAME "elf32-sh64-nbsd" 784#undef TARGET_LITTLE_SYM 785#define TARGET_LITTLE_SYM bfd_elf32_sh64lnbsd_vec 786#undef TARGET_LITTLE_NAME 787#define TARGET_LITTLE_NAME "elf32-sh64l-nbsd" 788#undef ELF_MAXPAGESIZE 789#define ELF_MAXPAGESIZE 0x10000 790#undef ELF_COMMONPAGESIZE 791#undef elf_symbol_leading_char 792#define elf_symbol_leading_char 0 793#undef elf32_bed 794#define elf32_bed elf32_sh64_nbsd_bed 795 796#include "elf32-target.h" 797 798/* Linux support. */ 799#undef TARGET_BIG_SYM 800#define TARGET_BIG_SYM bfd_elf32_sh64blin_vec 801#undef TARGET_BIG_NAME 802#define TARGET_BIG_NAME "elf32-sh64big-linux" 803#undef TARGET_LITTLE_SYM 804#define TARGET_LITTLE_SYM bfd_elf32_sh64lin_vec 805#undef TARGET_LITTLE_NAME 806#define TARGET_LITTLE_NAME "elf32-sh64-linux" 807#undef elf32_bed 808#define elf32_bed elf32_sh64_lin_bed 809#undef ELF_COMMONPAGESIZE 810#define ELF_COMMONPAGESIZE 0x1000 811 812#include "elf32-target.h" 813 814