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