1/* ELF object file format 2 Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 3 2001, 2002, 2003, 2004, 2005, 2006, 2007 4 Free Software Foundation, Inc. 5 6 This file is part of GAS, the GNU Assembler. 7 8 GAS is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as 10 published by the Free Software Foundation; either version 2, 11 or (at your option) any later version. 12 13 GAS is distributed in the hope that it will be useful, but 14 WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 16 the GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GAS; see the file COPYING. If not, write to the Free 20 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 21 02110-1301, USA. */ 22 23#define OBJ_HEADER "obj-elf.h" 24#include "as.h" 25#include "safe-ctype.h" 26#include "subsegs.h" 27#include "obstack.h" 28#include "struc-symbol.h" 29#include "dwarf2dbg.h" 30 31#ifndef ECOFF_DEBUGGING 32#define ECOFF_DEBUGGING 0 33#else 34#define NEED_ECOFF_DEBUG 35#endif 36 37#ifdef NEED_ECOFF_DEBUG 38#include "ecoff.h" 39#endif 40 41#ifdef TC_ALPHA 42#include "elf/alpha.h" 43#endif 44 45#ifdef TC_MIPS 46#include "elf/mips.h" 47#endif 48 49#ifdef TC_PPC 50#include "elf/ppc.h" 51#endif 52 53#ifdef TC_I370 54#include "elf/i370.h" 55#endif 56 57#ifdef TC_I386 58#include "elf/x86-64.h" 59#endif 60 61#ifdef TC_MEP 62#include "elf/mep.h" 63#endif 64 65static void obj_elf_line (int); 66static void obj_elf_size (int); 67static void obj_elf_type (int); 68static void obj_elf_ident (int); 69static void obj_elf_weak (int); 70static void obj_elf_local (int); 71static void obj_elf_visibility (int); 72static void obj_elf_symver (int); 73static void obj_elf_subsection (int); 74static void obj_elf_popsection (int); 75static void obj_elf_tls_common (int); 76static void obj_elf_lcomm (int); 77static void obj_elf_struct (int); 78 79static const pseudo_typeS elf_pseudo_table[] = 80{ 81 {"comm", obj_elf_common, 0}, 82 {"common", obj_elf_common, 1}, 83 {"ident", obj_elf_ident, 0}, 84 {"lcomm", obj_elf_lcomm, 0}, 85 {"local", obj_elf_local, 0}, 86 {"previous", obj_elf_previous, 0}, 87 {"section", obj_elf_section, 0}, 88 {"section.s", obj_elf_section, 0}, 89 {"sect", obj_elf_section, 0}, 90 {"sect.s", obj_elf_section, 0}, 91 {"pushsection", obj_elf_section, 1}, 92 {"popsection", obj_elf_popsection, 0}, 93 {"size", obj_elf_size, 0}, 94 {"type", obj_elf_type, 0}, 95 {"version", obj_elf_version, 0}, 96 {"weak", obj_elf_weak, 0}, 97 98 /* These define symbol visibility. */ 99 {"internal", obj_elf_visibility, STV_INTERNAL}, 100 {"hidden", obj_elf_visibility, STV_HIDDEN}, 101 {"protected", obj_elf_visibility, STV_PROTECTED}, 102 103 /* These are used for stabs-in-elf configurations. */ 104 {"line", obj_elf_line, 0}, 105 106 /* This is a GNU extension to handle symbol versions. */ 107 {"symver", obj_elf_symver, 0}, 108 109 /* A GNU extension to change subsection only. */ 110 {"subsection", obj_elf_subsection, 0}, 111 112 /* These are GNU extensions to aid in garbage collecting C++ vtables. */ 113 {"vtable_inherit", (void (*) (int)) &obj_elf_vtable_inherit, 0}, 114 {"vtable_entry", (void (*) (int)) &obj_elf_vtable_entry, 0}, 115 116 /* These are used for dwarf. */ 117 {"2byte", cons, 2}, 118 {"4byte", cons, 4}, 119 {"8byte", cons, 8}, 120 /* These are used for dwarf2. */ 121 { "file", (void (*) (int)) dwarf2_directive_file, 0 }, 122 { "loc", dwarf2_directive_loc, 0 }, 123 { "loc_mark_labels", dwarf2_directive_loc_mark_labels, 0 }, 124 125 /* We need to trap the section changing calls to handle .previous. */ 126 {"data", obj_elf_data, 0}, 127 {"offset", obj_elf_struct, 0}, 128 {"struct", obj_elf_struct, 0}, 129 {"text", obj_elf_text, 0}, 130 131 {"tls_common", obj_elf_tls_common, 0}, 132 133 /* End sentinel. */ 134 {NULL, NULL, 0}, 135}; 136 137static const pseudo_typeS ecoff_debug_pseudo_table[] = 138{ 139#ifdef NEED_ECOFF_DEBUG 140 /* COFF style debugging information for ECOFF. .ln is not used; .loc 141 is used instead. */ 142 { "def", ecoff_directive_def, 0 }, 143 { "dim", ecoff_directive_dim, 0 }, 144 { "endef", ecoff_directive_endef, 0 }, 145 { "file", ecoff_directive_file, 0 }, 146 { "scl", ecoff_directive_scl, 0 }, 147 { "tag", ecoff_directive_tag, 0 }, 148 { "val", ecoff_directive_val, 0 }, 149 150 /* COFF debugging requires pseudo-ops .size and .type, but ELF 151 already has meanings for those. We use .esize and .etype 152 instead. These are only generated by gcc anyhow. */ 153 { "esize", ecoff_directive_size, 0 }, 154 { "etype", ecoff_directive_type, 0 }, 155 156 /* ECOFF specific debugging information. */ 157 { "begin", ecoff_directive_begin, 0 }, 158 { "bend", ecoff_directive_bend, 0 }, 159 { "end", ecoff_directive_end, 0 }, 160 { "ent", ecoff_directive_ent, 0 }, 161 { "fmask", ecoff_directive_fmask, 0 }, 162 { "frame", ecoff_directive_frame, 0 }, 163 { "loc", ecoff_directive_loc, 0 }, 164 { "mask", ecoff_directive_mask, 0 }, 165 166 /* Other ECOFF directives. */ 167 { "extern", ecoff_directive_extern, 0 }, 168 169 /* These are used on Irix. I don't know how to implement them. */ 170 { "alias", s_ignore, 0 }, 171 { "bgnb", s_ignore, 0 }, 172 { "endb", s_ignore, 0 }, 173 { "lab", s_ignore, 0 }, 174 { "noalias", s_ignore, 0 }, 175 { "verstamp", s_ignore, 0 }, 176 { "vreg", s_ignore, 0 }, 177#endif 178 179 {NULL, NULL, 0} /* end sentinel */ 180}; 181 182#undef NO_RELOC 183#include "aout/aout64.h" 184 185/* This is called when the assembler starts. */ 186 187asection *elf_com_section_ptr; 188 189void 190elf_begin (void) 191{ 192 asection *s; 193 194 /* Add symbols for the known sections to the symbol table. */ 195 s = bfd_get_section_by_name (stdoutput, TEXT_SECTION_NAME); 196 symbol_table_insert (section_symbol (s)); 197 s = bfd_get_section_by_name (stdoutput, DATA_SECTION_NAME); 198 symbol_table_insert (section_symbol (s)); 199 s = bfd_get_section_by_name (stdoutput, BSS_SECTION_NAME); 200 symbol_table_insert (section_symbol (s)); 201 elf_com_section_ptr = bfd_com_section_ptr; 202} 203 204void 205elf_pop_insert (void) 206{ 207 pop_insert (elf_pseudo_table); 208 if (ECOFF_DEBUGGING) 209 pop_insert (ecoff_debug_pseudo_table); 210} 211 212static bfd_vma 213elf_s_get_size (symbolS *sym) 214{ 215 return S_GET_SIZE (sym); 216} 217 218static void 219elf_s_set_size (symbolS *sym, bfd_vma sz) 220{ 221 S_SET_SIZE (sym, sz); 222} 223 224static bfd_vma 225elf_s_get_align (symbolS *sym) 226{ 227 return S_GET_ALIGN (sym); 228} 229 230static void 231elf_s_set_align (symbolS *sym, bfd_vma align) 232{ 233 S_SET_ALIGN (sym, align); 234} 235 236int 237elf_s_get_other (symbolS *sym) 238{ 239 return elf_symbol (symbol_get_bfdsym (sym))->internal_elf_sym.st_other; 240} 241 242static void 243elf_s_set_other (symbolS *sym, int other) 244{ 245 S_SET_OTHER (sym, other); 246} 247 248static int 249elf_sec_sym_ok_for_reloc (asection *sec) 250{ 251 return obj_sec_sym_ok_for_reloc (sec); 252} 253 254void 255elf_file_symbol (const char *s, int appfile) 256{ 257 if (!appfile 258 || symbol_rootP == NULL 259 || symbol_rootP->bsym == NULL 260 || (symbol_rootP->bsym->flags & BSF_FILE) == 0) 261 { 262 symbolS *sym; 263 264 sym = symbol_new (s, absolute_section, 0, NULL); 265 symbol_set_frag (sym, &zero_address_frag); 266 symbol_get_bfdsym (sym)->flags |= BSF_FILE; 267 268 if (symbol_rootP != sym) 269 { 270 symbol_remove (sym, &symbol_rootP, &symbol_lastP); 271 symbol_insert (sym, symbol_rootP, &symbol_rootP, &symbol_lastP); 272#ifdef DEBUG 273 verify_symbol_chain (symbol_rootP, symbol_lastP); 274#endif 275 } 276 } 277 278#ifdef NEED_ECOFF_DEBUG 279 ecoff_new_file (s, appfile); 280#endif 281} 282 283/* Called from read.c:s_comm after we've parsed .comm symbol, size. 284 Parse a possible alignment value. */ 285 286symbolS * 287elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size) 288{ 289 addressT align = 0; 290 int is_local = symbol_get_obj (symbolP)->local; 291 292 if (*input_line_pointer == ',') 293 { 294 char *save = input_line_pointer; 295 296 input_line_pointer++; 297 SKIP_WHITESPACE (); 298 299 if (*input_line_pointer == '"') 300 { 301 /* For sparc. Accept .common symbol, length, "bss" */ 302 input_line_pointer++; 303 /* Some use the dot, some don't. */ 304 if (*input_line_pointer == '.') 305 input_line_pointer++; 306 /* Some say data, some say bss. */ 307 if (strncmp (input_line_pointer, "bss\"", 4) == 0) 308 input_line_pointer += 4; 309 else if (strncmp (input_line_pointer, "data\"", 5) == 0) 310 input_line_pointer += 5; 311 else 312 { 313 char *p = input_line_pointer; 314 char c; 315 316 while (*--p != '"') 317 ; 318 while (!is_end_of_line[(unsigned char) *input_line_pointer]) 319 if (*input_line_pointer++ == '"') 320 break; 321 c = *input_line_pointer; 322 *input_line_pointer = '\0'; 323 as_bad (_("bad .common segment %s"), p); 324 *input_line_pointer = c; 325 ignore_rest_of_line (); 326 return NULL; 327 } 328 /* ??? Don't ask me why these are always global. */ 329 is_local = 0; 330 } 331 else 332 { 333 input_line_pointer = save; 334 align = parse_align (is_local); 335 if (align == (addressT) -1) 336 return NULL; 337 } 338 } 339 340 if (is_local) 341 { 342 bss_alloc (symbolP, size, align); 343 S_CLEAR_EXTERNAL (symbolP); 344 } 345 else 346 { 347 S_SET_VALUE (symbolP, size); 348 S_SET_ALIGN (symbolP, align); 349 S_SET_EXTERNAL (symbolP); 350 S_SET_SEGMENT (symbolP, elf_com_section_ptr); 351 } 352 353 symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; 354 355 return symbolP; 356} 357 358void 359obj_elf_common (int is_common) 360{ 361 if (flag_mri && is_common) 362 s_mri_common (0); 363 else 364 s_comm_internal (0, elf_common_parse); 365} 366 367static void 368obj_elf_tls_common (int ignore ATTRIBUTE_UNUSED) 369{ 370 symbolS *symbolP = s_comm_internal (0, elf_common_parse); 371 372 if (symbolP) 373 symbol_get_bfdsym (symbolP)->flags |= BSF_THREAD_LOCAL; 374} 375 376static void 377obj_elf_lcomm (int ignore ATTRIBUTE_UNUSED) 378{ 379 symbolS *symbolP = s_comm_internal (0, s_lcomm_internal); 380 381 if (symbolP) 382 symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; 383} 384 385static void 386obj_elf_local (int ignore ATTRIBUTE_UNUSED) 387{ 388 char *name; 389 int c; 390 symbolS *symbolP; 391 392 do 393 { 394 name = input_line_pointer; 395 c = get_symbol_end (); 396 symbolP = symbol_find_or_make (name); 397 *input_line_pointer = c; 398 SKIP_WHITESPACE (); 399 S_CLEAR_EXTERNAL (symbolP); 400 symbol_get_obj (symbolP)->local = 1; 401 if (c == ',') 402 { 403 input_line_pointer++; 404 SKIP_WHITESPACE (); 405 if (*input_line_pointer == '\n') 406 c = '\n'; 407 } 408 } 409 while (c == ','); 410 demand_empty_rest_of_line (); 411} 412 413static void 414obj_elf_weak (int ignore ATTRIBUTE_UNUSED) 415{ 416 char *name; 417 int c; 418 symbolS *symbolP; 419 420 do 421 { 422 name = input_line_pointer; 423 c = get_symbol_end (); 424 symbolP = symbol_find_or_make (name); 425 *input_line_pointer = c; 426 SKIP_WHITESPACE (); 427 S_SET_WEAK (symbolP); 428 symbol_get_obj (symbolP)->local = 1; 429 if (c == ',') 430 { 431 input_line_pointer++; 432 SKIP_WHITESPACE (); 433 if (*input_line_pointer == '\n') 434 c = '\n'; 435 } 436 } 437 while (c == ','); 438 demand_empty_rest_of_line (); 439} 440 441static void 442obj_elf_visibility (int visibility) 443{ 444 char *name; 445 int c; 446 symbolS *symbolP; 447 asymbol *bfdsym; 448 elf_symbol_type *elfsym; 449 450 do 451 { 452 name = input_line_pointer; 453 c = get_symbol_end (); 454 symbolP = symbol_find_or_make (name); 455 *input_line_pointer = c; 456 457 SKIP_WHITESPACE (); 458 459 bfdsym = symbol_get_bfdsym (symbolP); 460 elfsym = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym); 461 462 assert (elfsym); 463 464 elfsym->internal_elf_sym.st_other &= ~3; 465 elfsym->internal_elf_sym.st_other |= visibility; 466 467 if (c == ',') 468 { 469 input_line_pointer ++; 470 471 SKIP_WHITESPACE (); 472 473 if (*input_line_pointer == '\n') 474 c = '\n'; 475 } 476 } 477 while (c == ','); 478 479 demand_empty_rest_of_line (); 480} 481 482static segT previous_section; 483static int previous_subsection; 484 485struct section_stack 486{ 487 struct section_stack *next; 488 segT seg, prev_seg; 489 int subseg, prev_subseg; 490}; 491 492static struct section_stack *section_stack; 493 494static bfd_boolean 495get_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) 496{ 497 const char *gname = inf; 498 const char *group_name = elf_group_name (sec); 499 500 return (group_name == gname 501 || (group_name != NULL 502 && gname != NULL 503 && strcmp (group_name, gname) == 0)); 504} 505 506/* Handle the .section pseudo-op. This code supports two different 507 syntaxes. 508 509 The first is found on Solaris, and looks like 510 .section ".sec1",#alloc,#execinstr,#write 511 Here the names after '#' are the SHF_* flags to turn on for the 512 section. I'm not sure how it determines the SHT_* type (BFD 513 doesn't really give us control over the type, anyhow). 514 515 The second format is found on UnixWare, and probably most SVR4 516 machines, and looks like 517 .section .sec1,"a",@progbits 518 The quoted string may contain any combination of a, w, x, and 519 represents the SHF_* flags to turn on for the section. The string 520 beginning with '@' can be progbits or nobits. There should be 521 other possibilities, but I don't know what they are. In any case, 522 BFD doesn't really let us set the section type. */ 523 524void 525obj_elf_change_section (const char *name, 526 int type, 527 int attr, 528 int entsize, 529 const char *group_name, 530 int linkonce, 531 int push) 532{ 533 asection *old_sec; 534 segT sec; 535 flagword flags; 536 const struct elf_backend_data *bed; 537 const struct bfd_elf_special_section *ssect; 538 539#ifdef md_flush_pending_output 540 md_flush_pending_output (); 541#endif 542 543 /* Switch to the section, creating it if necessary. */ 544 if (push) 545 { 546 struct section_stack *elt; 547 elt = xmalloc (sizeof (struct section_stack)); 548 elt->next = section_stack; 549 elt->seg = now_seg; 550 elt->prev_seg = previous_section; 551 elt->subseg = now_subseg; 552 elt->prev_subseg = previous_subsection; 553 section_stack = elt; 554 } 555 previous_section = now_seg; 556 previous_subsection = now_subseg; 557 558 old_sec = bfd_get_section_by_name_if (stdoutput, name, get_section, 559 (void *) group_name); 560 if (old_sec) 561 { 562 sec = old_sec; 563 subseg_set (sec, 0); 564 } 565 else 566 sec = subseg_force_new (name, 0); 567 568 bed = get_elf_backend_data (stdoutput); 569 ssect = (*bed->get_sec_type_attr) (stdoutput, sec); 570 571 if (ssect != NULL) 572 { 573 bfd_boolean override = FALSE; 574 575 if (type == SHT_NULL) 576 type = ssect->type; 577 else if (type != ssect->type) 578 { 579 if (old_sec == NULL 580 /* FIXME: gcc, as of 2002-10-22, will emit 581 582 .section .init_array,"aw",@progbits 583 584 for __attribute__ ((section (".init_array"))). 585 "@progbits" is incorrect. Also for x86-64 large bss 586 sections, gcc, as of 2005-07-06, will emit 587 588 .section .lbss,"aw",@progbits 589 590 "@progbits" is incorrect. */ 591#ifdef TC_I386 592 && (bed->s->arch_size != 64 593 || !(ssect->attr & SHF_X86_64_LARGE)) 594#endif 595 && ssect->type != SHT_INIT_ARRAY 596 && ssect->type != SHT_FINI_ARRAY 597 && ssect->type != SHT_PREINIT_ARRAY) 598 { 599 /* We allow to specify any type for a .note section. */ 600 if (ssect->type != SHT_NOTE) 601 as_warn (_("setting incorrect section type for %s"), 602 name); 603 } 604 else 605 { 606 as_warn (_("ignoring incorrect section type for %s"), 607 name); 608 type = ssect->type; 609 } 610 } 611 612 if (old_sec == NULL && (attr & ~ssect->attr) != 0) 613 { 614 /* As a GNU extension, we permit a .note section to be 615 allocatable. If the linker sees an allocatable .note 616 section, it will create a PT_NOTE segment in the output 617 file. We also allow "x" for .note.GNU-stack. */ 618 if (ssect->type == SHT_NOTE 619 && (attr == SHF_ALLOC || attr == SHF_EXECINSTR)) 620 ; 621 /* Allow different SHF_MERGE and SHF_STRINGS if we have 622 something like .rodata.str. */ 623 else if (ssect->suffix_length == -2 624 && name[ssect->prefix_length] == '.' 625 && (attr 626 & ~ssect->attr 627 & ~SHF_MERGE 628 & ~SHF_STRINGS) == 0) 629 ; 630 /* .interp, .strtab and .symtab can have SHF_ALLOC. */ 631 else if (attr == SHF_ALLOC 632 && (strcmp (name, ".interp") == 0 633 || strcmp (name, ".strtab") == 0 634 || strcmp (name, ".symtab") == 0)) 635 override = TRUE; 636 /* .note.GNU-stack can have SHF_EXECINSTR. */ 637 else if (attr == SHF_EXECINSTR 638 && strcmp (name, ".note.GNU-stack") == 0) 639 override = TRUE; 640#ifdef TC_ALPHA 641 /* A section on Alpha may have SHF_ALPHA_GPREL. */ 642 else if ((attr & ~ssect->attr) == SHF_ALPHA_GPREL) 643 override = TRUE; 644#endif 645 else 646 { 647 if (group_name == NULL) 648 as_warn (_("setting incorrect section attributes for %s"), 649 name); 650 override = TRUE; 651 } 652 } 653 if (!override && old_sec == NULL) 654 attr |= ssect->attr; 655 } 656 657 /* Convert ELF type and flags to BFD flags. */ 658 flags = (SEC_RELOC 659 | ((attr & SHF_WRITE) ? 0 : SEC_READONLY) 660 | ((attr & SHF_ALLOC) ? SEC_ALLOC : 0) 661 | (((attr & SHF_ALLOC) && type != SHT_NOBITS) ? SEC_LOAD : 0) 662 | ((attr & SHF_EXECINSTR) ? SEC_CODE : 0) 663 | ((attr & SHF_MERGE) ? SEC_MERGE : 0) 664 | ((attr & SHF_STRINGS) ? SEC_STRINGS : 0) 665 | ((attr & SHF_TLS) ? SEC_THREAD_LOCAL : 0)); 666#ifdef md_elf_section_flags 667 flags = md_elf_section_flags (flags, attr, type); 668#endif 669 670 if (linkonce) 671 flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; 672 673 if (old_sec == NULL) 674 { 675 symbolS *secsym; 676 677 elf_section_type (sec) = type; 678 elf_section_flags (sec) = attr; 679 680 /* Prevent SEC_HAS_CONTENTS from being inadvertently set. */ 681 if (type == SHT_NOBITS) 682 seg_info (sec)->bss = 1; 683 684 bfd_set_section_flags (stdoutput, sec, flags); 685 if (flags & SEC_MERGE) 686 sec->entsize = entsize; 687 elf_group_name (sec) = group_name; 688 689 /* Add a symbol for this section to the symbol table. */ 690 secsym = symbol_find (name); 691 if (secsym != NULL) 692 symbol_set_bfdsym (secsym, sec->symbol); 693 else 694 symbol_table_insert (section_symbol (sec)); 695 } 696 else 697 { 698 if (type != SHT_NULL 699 && (unsigned) type != elf_section_type (old_sec)) 700 as_warn (_("ignoring changed section type for %s"), name); 701 702 if (attr != 0) 703 { 704 /* If section attributes are specified the second time we see a 705 particular section, then check that they are the same as we 706 saw the first time. */ 707 if (((old_sec->flags ^ flags) 708 & (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE 709 | SEC_EXCLUDE | SEC_SORT_ENTRIES | SEC_MERGE | SEC_STRINGS 710 | SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD 711 | SEC_THREAD_LOCAL))) 712 as_warn (_("ignoring changed section attributes for %s"), name); 713 if ((flags & SEC_MERGE) && old_sec->entsize != (unsigned) entsize) 714 as_warn (_("ignoring changed section entity size for %s"), name); 715 } 716 } 717 718#ifdef md_elf_section_change_hook 719 md_elf_section_change_hook (); 720#endif 721} 722 723static int 724obj_elf_parse_section_letters (char *str, size_t len) 725{ 726 int attr = 0; 727 728 while (len > 0) 729 { 730 switch (*str) 731 { 732 case 'a': 733 attr |= SHF_ALLOC; 734 break; 735 case 'w': 736 attr |= SHF_WRITE; 737 break; 738 case 'x': 739 attr |= SHF_EXECINSTR; 740 break; 741 case 'M': 742 attr |= SHF_MERGE; 743 break; 744 case 'S': 745 attr |= SHF_STRINGS; 746 break; 747 case 'G': 748 attr |= SHF_GROUP; 749 break; 750 case 'T': 751 attr |= SHF_TLS; 752 break; 753 /* Compatibility. */ 754 case 'm': 755 if (*(str - 1) == 'a') 756 { 757 attr |= SHF_MERGE; 758 if (len > 1 && str[1] == 's') 759 { 760 attr |= SHF_STRINGS; 761 str++, len--; 762 } 763 break; 764 } 765 default: 766 { 767 char *bad_msg = _("unrecognized .section attribute: want a,w,x,M,S,G,T"); 768#ifdef md_elf_section_letter 769 int md_attr = md_elf_section_letter (*str, &bad_msg); 770 if (md_attr >= 0) 771 attr |= md_attr; 772 else 773#endif 774 as_fatal ("%s", bad_msg); 775 } 776 break; 777 } 778 str++, len--; 779 } 780 781 return attr; 782} 783 784static int 785obj_elf_section_word (char *str, size_t len) 786{ 787 if (len == 5 && strncmp (str, "write", 5) == 0) 788 return SHF_WRITE; 789 if (len == 5 && strncmp (str, "alloc", 5) == 0) 790 return SHF_ALLOC; 791 if (len == 9 && strncmp (str, "execinstr", 9) == 0) 792 return SHF_EXECINSTR; 793 if (len == 3 && strncmp (str, "tls", 3) == 0) 794 return SHF_TLS; 795 796#ifdef md_elf_section_word 797 { 798 int md_attr = md_elf_section_word (str, len); 799 if (md_attr >= 0) 800 return md_attr; 801 } 802#endif 803 804 as_warn (_("unrecognized section attribute")); 805 return 0; 806} 807 808static int 809obj_elf_section_type (char *str, size_t len) 810{ 811 if (len == 8 && strncmp (str, "progbits", 8) == 0) 812 return SHT_PROGBITS; 813 if (len == 6 && strncmp (str, "nobits", 6) == 0) 814 return SHT_NOBITS; 815 if (len == 4 && strncmp (str, "note", 4) == 0) 816 return SHT_NOTE; 817 if (len == 10 && strncmp (str, "init_array", 10) == 0) 818 return SHT_INIT_ARRAY; 819 if (len == 10 && strncmp (str, "fini_array", 10) == 0) 820 return SHT_FINI_ARRAY; 821 if (len == 13 && strncmp (str, "preinit_array", 13) == 0) 822 return SHT_PREINIT_ARRAY; 823 824#ifdef md_elf_section_type 825 { 826 int md_type = md_elf_section_type (str, len); 827 if (md_type >= 0) 828 return md_type; 829 } 830#endif 831 832 as_warn (_("unrecognized section type")); 833 return 0; 834} 835 836/* Get name of section. */ 837static char * 838obj_elf_section_name (void) 839{ 840 char *name; 841 842 SKIP_WHITESPACE (); 843 if (*input_line_pointer == '"') 844 { 845 int dummy; 846 847 name = demand_copy_C_string (&dummy); 848 if (name == NULL) 849 { 850 ignore_rest_of_line (); 851 return NULL; 852 } 853 } 854 else 855 { 856 char *end = input_line_pointer; 857 858 while (0 == strchr ("\n\t,; ", *end)) 859 end++; 860 if (end == input_line_pointer) 861 { 862 as_bad (_("missing name")); 863 ignore_rest_of_line (); 864 return NULL; 865 } 866 867 name = xmalloc (end - input_line_pointer + 1); 868 memcpy (name, input_line_pointer, end - input_line_pointer); 869 name[end - input_line_pointer] = '\0'; 870#ifdef tc_canonicalize_section_name 871 name = tc_canonicalize_section_name (name); 872#endif 873 input_line_pointer = end; 874 } 875 SKIP_WHITESPACE (); 876 return name; 877} 878 879void 880obj_elf_section (int push) 881{ 882 char *name, *group_name, *beg; 883 int type, attr, dummy; 884 int entsize; 885 int linkonce; 886 887#ifndef TC_I370 888 if (flag_mri) 889 { 890 char mri_type; 891 892#ifdef md_flush_pending_output 893 md_flush_pending_output (); 894#endif 895 896 previous_section = now_seg; 897 previous_subsection = now_subseg; 898 899 s_mri_sect (&mri_type); 900 901#ifdef md_elf_section_change_hook 902 md_elf_section_change_hook (); 903#endif 904 905 return; 906 } 907#endif /* ! defined (TC_I370) */ 908 909 name = obj_elf_section_name (); 910 if (name == NULL) 911 return; 912 type = SHT_NULL; 913 attr = 0; 914 group_name = NULL; 915 entsize = 0; 916 linkonce = 0; 917 918 if (*input_line_pointer == ',') 919 { 920 /* Skip the comma. */ 921 ++input_line_pointer; 922 SKIP_WHITESPACE (); 923 924 if (*input_line_pointer == '"') 925 { 926 beg = demand_copy_C_string (&dummy); 927 if (beg == NULL) 928 { 929 ignore_rest_of_line (); 930 return; 931 } 932 attr |= obj_elf_parse_section_letters (beg, strlen (beg)); 933 934 SKIP_WHITESPACE (); 935 if (*input_line_pointer == ',') 936 { 937 char c; 938 char *save = input_line_pointer; 939 940 ++input_line_pointer; 941 SKIP_WHITESPACE (); 942 c = *input_line_pointer; 943 if (c == '"') 944 { 945 beg = demand_copy_C_string (&dummy); 946 if (beg == NULL) 947 { 948 ignore_rest_of_line (); 949 return; 950 } 951 type = obj_elf_section_type (beg, strlen (beg)); 952 } 953 else if (c == '@' || c == '%') 954 { 955 beg = ++input_line_pointer; 956 c = get_symbol_end (); 957 *input_line_pointer = c; 958 type = obj_elf_section_type (beg, input_line_pointer - beg); 959 } 960 else 961 input_line_pointer = save; 962 } 963 964 SKIP_WHITESPACE (); 965 if ((attr & SHF_MERGE) != 0 && *input_line_pointer == ',') 966 { 967 ++input_line_pointer; 968 SKIP_WHITESPACE (); 969 entsize = get_absolute_expression (); 970 SKIP_WHITESPACE (); 971 if (entsize < 0) 972 { 973 as_warn (_("invalid merge entity size")); 974 attr &= ~SHF_MERGE; 975 entsize = 0; 976 } 977 } 978 else if ((attr & SHF_MERGE) != 0) 979 { 980 as_warn (_("entity size for SHF_MERGE not specified")); 981 attr &= ~SHF_MERGE; 982 } 983 984 if ((attr & SHF_GROUP) != 0 && *input_line_pointer == ',') 985 { 986 ++input_line_pointer; 987 group_name = obj_elf_section_name (); 988 if (group_name == NULL) 989 attr &= ~SHF_GROUP; 990 else if (strncmp (input_line_pointer, ",comdat", 7) == 0) 991 { 992 input_line_pointer += 7; 993 linkonce = 1; 994 } 995 else if (strncmp (name, ".gnu.linkonce", 13) == 0) 996 linkonce = 1; 997 } 998 else if ((attr & SHF_GROUP) != 0) 999 { 1000 as_warn (_("group name for SHF_GROUP not specified")); 1001 attr &= ~SHF_GROUP; 1002 } 1003 } 1004 else 1005 { 1006 do 1007 { 1008 char c; 1009 1010 SKIP_WHITESPACE (); 1011 if (*input_line_pointer != '#') 1012 { 1013 as_bad (_("character following name is not '#'")); 1014 ignore_rest_of_line (); 1015 return; 1016 } 1017 beg = ++input_line_pointer; 1018 c = get_symbol_end (); 1019 *input_line_pointer = c; 1020 1021 attr |= obj_elf_section_word (beg, input_line_pointer - beg); 1022 1023 SKIP_WHITESPACE (); 1024 } 1025 while (*input_line_pointer++ == ','); 1026 --input_line_pointer; 1027 } 1028 } 1029 1030 demand_empty_rest_of_line (); 1031 1032 obj_elf_change_section (name, type, attr, entsize, group_name, linkonce, push); 1033} 1034 1035/* Change to the .data section. */ 1036 1037void 1038obj_elf_data (int i) 1039{ 1040#ifdef md_flush_pending_output 1041 md_flush_pending_output (); 1042#endif 1043 1044 previous_section = now_seg; 1045 previous_subsection = now_subseg; 1046 s_data (i); 1047 1048#ifdef md_elf_section_change_hook 1049 md_elf_section_change_hook (); 1050#endif 1051} 1052 1053/* Change to the .text section. */ 1054 1055void 1056obj_elf_text (int i) 1057{ 1058#ifdef md_flush_pending_output 1059 md_flush_pending_output (); 1060#endif 1061 1062 previous_section = now_seg; 1063 previous_subsection = now_subseg; 1064 s_text (i); 1065 1066#ifdef md_elf_section_change_hook 1067 md_elf_section_change_hook (); 1068#endif 1069} 1070 1071/* Change to the *ABS* section. */ 1072 1073void 1074obj_elf_struct (int i) 1075{ 1076#ifdef md_flush_pending_output 1077 md_flush_pending_output (); 1078#endif 1079 1080 previous_section = now_seg; 1081 previous_subsection = now_subseg; 1082 s_struct (i); 1083 1084#ifdef md_elf_section_change_hook 1085 md_elf_section_change_hook (); 1086#endif 1087} 1088 1089static void 1090obj_elf_subsection (int ignore ATTRIBUTE_UNUSED) 1091{ 1092 register int temp; 1093 1094#ifdef md_flush_pending_output 1095 md_flush_pending_output (); 1096#endif 1097 1098 previous_section = now_seg; 1099 previous_subsection = now_subseg; 1100 1101 temp = get_absolute_expression (); 1102 subseg_set (now_seg, (subsegT) temp); 1103 demand_empty_rest_of_line (); 1104 1105#ifdef md_elf_section_change_hook 1106 md_elf_section_change_hook (); 1107#endif 1108} 1109 1110/* This can be called from the processor backends if they change 1111 sections. */ 1112 1113void 1114obj_elf_section_change_hook (void) 1115{ 1116 previous_section = now_seg; 1117 previous_subsection = now_subseg; 1118} 1119 1120void 1121obj_elf_previous (int ignore ATTRIBUTE_UNUSED) 1122{ 1123 segT new_section; 1124 int new_subsection; 1125 1126 if (previous_section == 0) 1127 { 1128 as_warn (_(".previous without corresponding .section; ignored")); 1129 return; 1130 } 1131 1132#ifdef md_flush_pending_output 1133 md_flush_pending_output (); 1134#endif 1135 1136 new_section = previous_section; 1137 new_subsection = previous_subsection; 1138 previous_section = now_seg; 1139 previous_subsection = now_subseg; 1140 subseg_set (new_section, new_subsection); 1141 1142#ifdef md_elf_section_change_hook 1143 md_elf_section_change_hook (); 1144#endif 1145} 1146 1147static void 1148obj_elf_popsection (int xxx ATTRIBUTE_UNUSED) 1149{ 1150 struct section_stack *top = section_stack; 1151 1152 if (top == NULL) 1153 { 1154 as_warn (_(".popsection without corresponding .pushsection; ignored")); 1155 return; 1156 } 1157 1158#ifdef md_flush_pending_output 1159 md_flush_pending_output (); 1160#endif 1161 1162 section_stack = top->next; 1163 previous_section = top->prev_seg; 1164 previous_subsection = top->prev_subseg; 1165 subseg_set (top->seg, top->subseg); 1166 free (top); 1167 1168#ifdef md_elf_section_change_hook 1169 md_elf_section_change_hook (); 1170#endif 1171} 1172 1173static void 1174obj_elf_line (int ignore ATTRIBUTE_UNUSED) 1175{ 1176 /* Assume delimiter is part of expression. BSD4.2 as fails with 1177 delightful bug, so we are not being incompatible here. */ 1178 new_logical_line (NULL, get_absolute_expression ()); 1179 demand_empty_rest_of_line (); 1180} 1181 1182/* This handles the .symver pseudo-op, which is used to specify a 1183 symbol version. The syntax is ``.symver NAME,SYMVERNAME''. 1184 SYMVERNAME may contain ELF_VER_CHR ('@') characters. This 1185 pseudo-op causes the assembler to emit a symbol named SYMVERNAME 1186 with the same value as the symbol NAME. */ 1187 1188static void 1189obj_elf_symver (int ignore ATTRIBUTE_UNUSED) 1190{ 1191 char *name; 1192 char c; 1193 char old_lexat; 1194 symbolS *sym; 1195 1196 name = input_line_pointer; 1197 c = get_symbol_end (); 1198 1199 sym = symbol_find_or_make (name); 1200 1201 *input_line_pointer = c; 1202 1203 SKIP_WHITESPACE (); 1204 if (*input_line_pointer != ',') 1205 { 1206 as_bad (_("expected comma after name in .symver")); 1207 ignore_rest_of_line (); 1208 return; 1209 } 1210 1211 ++input_line_pointer; 1212 SKIP_WHITESPACE (); 1213 name = input_line_pointer; 1214 1215 /* Temporarily include '@' in symbol names. */ 1216 old_lexat = lex_type[(unsigned char) '@']; 1217 lex_type[(unsigned char) '@'] |= LEX_NAME; 1218 c = get_symbol_end (); 1219 lex_type[(unsigned char) '@'] = old_lexat; 1220 1221 if (symbol_get_obj (sym)->versioned_name == NULL) 1222 { 1223 symbol_get_obj (sym)->versioned_name = xstrdup (name); 1224 1225 *input_line_pointer = c; 1226 1227 if (strchr (symbol_get_obj (sym)->versioned_name, 1228 ELF_VER_CHR) == NULL) 1229 { 1230 as_bad (_("missing version name in `%s' for symbol `%s'"), 1231 symbol_get_obj (sym)->versioned_name, 1232 S_GET_NAME (sym)); 1233 ignore_rest_of_line (); 1234 return; 1235 } 1236 } 1237 else 1238 { 1239 if (strcmp (symbol_get_obj (sym)->versioned_name, name)) 1240 { 1241 as_bad (_("multiple versions [`%s'|`%s'] for symbol `%s'"), 1242 name, symbol_get_obj (sym)->versioned_name, 1243 S_GET_NAME (sym)); 1244 ignore_rest_of_line (); 1245 return; 1246 } 1247 1248 *input_line_pointer = c; 1249 } 1250 1251 demand_empty_rest_of_line (); 1252} 1253 1254/* This handles the .vtable_inherit pseudo-op, which is used to indicate 1255 to the linker the hierarchy in which a particular table resides. The 1256 syntax is ".vtable_inherit CHILDNAME, PARENTNAME". */ 1257 1258struct fix * 1259obj_elf_vtable_inherit (int ignore ATTRIBUTE_UNUSED) 1260{ 1261 char *cname, *pname; 1262 symbolS *csym, *psym; 1263 char c, bad = 0; 1264 1265 if (*input_line_pointer == '#') 1266 ++input_line_pointer; 1267 1268 cname = input_line_pointer; 1269 c = get_symbol_end (); 1270 csym = symbol_find (cname); 1271 1272 /* GCFIXME: should check that we don't have two .vtable_inherits for 1273 the same child symbol. Also, we can currently only do this if the 1274 child symbol is already exists and is placed in a fragment. */ 1275 1276 if (csym == NULL || symbol_get_frag (csym) == NULL) 1277 { 1278 as_bad ("expected `%s' to have already been set for .vtable_inherit", 1279 cname); 1280 bad = 1; 1281 } 1282 1283 *input_line_pointer = c; 1284 1285 SKIP_WHITESPACE (); 1286 if (*input_line_pointer != ',') 1287 { 1288 as_bad ("expected comma after name in .vtable_inherit"); 1289 ignore_rest_of_line (); 1290 return NULL; 1291 } 1292 1293 ++input_line_pointer; 1294 SKIP_WHITESPACE (); 1295 1296 if (*input_line_pointer == '#') 1297 ++input_line_pointer; 1298 1299 if (input_line_pointer[0] == '0' 1300 && (input_line_pointer[1] == '\0' 1301 || ISSPACE (input_line_pointer[1]))) 1302 { 1303 psym = section_symbol (absolute_section); 1304 ++input_line_pointer; 1305 } 1306 else 1307 { 1308 pname = input_line_pointer; 1309 c = get_symbol_end (); 1310 psym = symbol_find_or_make (pname); 1311 *input_line_pointer = c; 1312 } 1313 1314 demand_empty_rest_of_line (); 1315 1316 if (bad) 1317 return NULL; 1318 1319 assert (symbol_get_value_expression (csym)->X_op == O_constant); 1320 return fix_new (symbol_get_frag (csym), 1321 symbol_get_value_expression (csym)->X_add_number, 1322 0, psym, 0, 0, BFD_RELOC_VTABLE_INHERIT); 1323} 1324 1325/* This handles the .vtable_entry pseudo-op, which is used to indicate 1326 to the linker that a vtable slot was used. The syntax is 1327 ".vtable_entry tablename, offset". */ 1328 1329struct fix * 1330obj_elf_vtable_entry (int ignore ATTRIBUTE_UNUSED) 1331{ 1332 char *name; 1333 symbolS *sym; 1334 offsetT offset; 1335 char c; 1336 1337 if (*input_line_pointer == '#') 1338 ++input_line_pointer; 1339 1340 name = input_line_pointer; 1341 c = get_symbol_end (); 1342 sym = symbol_find_or_make (name); 1343 *input_line_pointer = c; 1344 1345 SKIP_WHITESPACE (); 1346 if (*input_line_pointer != ',') 1347 { 1348 as_bad ("expected comma after name in .vtable_entry"); 1349 ignore_rest_of_line (); 1350 return NULL; 1351 } 1352 1353 ++input_line_pointer; 1354 if (*input_line_pointer == '#') 1355 ++input_line_pointer; 1356 1357 offset = get_absolute_expression (); 1358 1359 demand_empty_rest_of_line (); 1360 1361 return fix_new (frag_now, frag_now_fix (), 0, sym, offset, 0, 1362 BFD_RELOC_VTABLE_ENTRY); 1363} 1364 1365void 1366elf_obj_read_begin_hook (void) 1367{ 1368#ifdef NEED_ECOFF_DEBUG 1369 if (ECOFF_DEBUGGING) 1370 ecoff_read_begin_hook (); 1371#endif 1372} 1373 1374void 1375elf_obj_symbol_new_hook (symbolS *symbolP) 1376{ 1377 struct elf_obj_sy *sy_obj; 1378 1379 sy_obj = symbol_get_obj (symbolP); 1380 sy_obj->size = NULL; 1381 sy_obj->versioned_name = NULL; 1382 1383#ifdef NEED_ECOFF_DEBUG 1384 if (ECOFF_DEBUGGING) 1385 ecoff_symbol_new_hook (symbolP); 1386#endif 1387} 1388 1389/* When setting one symbol equal to another, by default we probably 1390 want them to have the same "size", whatever it means in the current 1391 context. */ 1392 1393void 1394elf_copy_symbol_attributes (symbolS *dest, symbolS *src) 1395{ 1396 struct elf_obj_sy *srcelf = symbol_get_obj (src); 1397 struct elf_obj_sy *destelf = symbol_get_obj (dest); 1398 if (srcelf->size) 1399 { 1400 if (destelf->size == NULL) 1401 destelf->size = xmalloc (sizeof (expressionS)); 1402 *destelf->size = *srcelf->size; 1403 } 1404 else 1405 { 1406 if (destelf->size != NULL) 1407 free (destelf->size); 1408 destelf->size = NULL; 1409 } 1410 S_SET_SIZE (dest, S_GET_SIZE (src)); 1411 /* Don't copy visibility. */ 1412 S_SET_OTHER (dest, (ELF_ST_VISIBILITY (S_GET_OTHER (dest)) 1413 | (S_GET_OTHER (src) & ~ELF_ST_VISIBILITY (-1)))); 1414} 1415 1416void 1417obj_elf_version (int ignore ATTRIBUTE_UNUSED) 1418{ 1419 char *name; 1420 unsigned int c; 1421 char *p; 1422 asection *seg = now_seg; 1423 subsegT subseg = now_subseg; 1424 Elf_Internal_Note i_note; 1425 Elf_External_Note e_note; 1426 asection *note_secp = NULL; 1427 1428 SKIP_WHITESPACE (); 1429 if (*input_line_pointer == '\"') 1430 { 1431 unsigned int len; 1432 1433 ++input_line_pointer; /* -> 1st char of string. */ 1434 name = input_line_pointer; 1435 1436 while (is_a_char (c = next_char_of_string ())) 1437 ; 1438 c = *input_line_pointer; 1439 *input_line_pointer = '\0'; 1440 *(input_line_pointer - 1) = '\0'; 1441 *input_line_pointer = c; 1442 1443 /* Create the .note section. */ 1444 note_secp = subseg_new (".note", 0); 1445 bfd_set_section_flags (stdoutput, 1446 note_secp, 1447 SEC_HAS_CONTENTS | SEC_READONLY); 1448 1449 /* Process the version string. */ 1450 len = strlen (name) + 1; 1451 1452 /* PR 3456: Although the name field is padded out to an 4-byte 1453 boundary, the namesz field should not be adjusted. */ 1454 i_note.namesz = len; 1455 i_note.descsz = 0; /* No description. */ 1456 i_note.type = NT_VERSION; 1457 p = frag_more (sizeof (e_note.namesz)); 1458 md_number_to_chars (p, i_note.namesz, sizeof (e_note.namesz)); 1459 p = frag_more (sizeof (e_note.descsz)); 1460 md_number_to_chars (p, i_note.descsz, sizeof (e_note.descsz)); 1461 p = frag_more (sizeof (e_note.type)); 1462 md_number_to_chars (p, i_note.type, sizeof (e_note.type)); 1463 p = frag_more (len); 1464 memcpy (p, name, len); 1465 1466 frag_align (2, 0, 0); 1467 1468 subseg_set (seg, subseg); 1469 } 1470 else 1471 as_bad (_("expected quoted string")); 1472 1473 demand_empty_rest_of_line (); 1474} 1475 1476static void 1477obj_elf_size (int ignore ATTRIBUTE_UNUSED) 1478{ 1479 char *name = input_line_pointer; 1480 char c = get_symbol_end (); 1481 char *p; 1482 expressionS exp; 1483 symbolS *sym; 1484 1485 p = input_line_pointer; 1486 *p = c; 1487 SKIP_WHITESPACE (); 1488 if (*input_line_pointer != ',') 1489 { 1490 *p = 0; 1491 as_bad (_("expected comma after name `%s' in .size directive"), name); 1492 *p = c; 1493 ignore_rest_of_line (); 1494 return; 1495 } 1496 input_line_pointer++; 1497 expression (&exp); 1498 if (exp.X_op == O_absent) 1499 { 1500 as_bad (_("missing expression in .size directive")); 1501 exp.X_op = O_constant; 1502 exp.X_add_number = 0; 1503 } 1504 *p = 0; 1505 sym = symbol_find_or_make (name); 1506 *p = c; 1507 if (exp.X_op == O_constant) 1508 { 1509 S_SET_SIZE (sym, exp.X_add_number); 1510 if (symbol_get_obj (sym)->size) 1511 { 1512 xfree (symbol_get_obj (sym)->size); 1513 symbol_get_obj (sym)->size = NULL; 1514 } 1515 } 1516 else 1517 { 1518 symbol_get_obj (sym)->size = xmalloc (sizeof (expressionS)); 1519 *symbol_get_obj (sym)->size = exp; 1520 } 1521 demand_empty_rest_of_line (); 1522} 1523 1524/* Handle the ELF .type pseudo-op. This sets the type of a symbol. 1525 There are five syntaxes: 1526 1527 The first (used on Solaris) is 1528 .type SYM,#function 1529 The second (used on UnixWare) is 1530 .type SYM,@function 1531 The third (reportedly to be used on Irix 6.0) is 1532 .type SYM STT_FUNC 1533 The fourth (used on NetBSD/Arm and Linux/ARM) is 1534 .type SYM,%function 1535 The fifth (used on SVR4/860) is 1536 .type SYM,"function" 1537 */ 1538 1539static void 1540obj_elf_type (int ignore ATTRIBUTE_UNUSED) 1541{ 1542 char *name; 1543 char c; 1544 int type; 1545 const char *typename; 1546 symbolS *sym; 1547 elf_symbol_type *elfsym; 1548 1549 name = input_line_pointer; 1550 c = get_symbol_end (); 1551 sym = symbol_find_or_make (name); 1552 elfsym = (elf_symbol_type *) symbol_get_bfdsym (sym); 1553 *input_line_pointer = c; 1554 1555 SKIP_WHITESPACE (); 1556 if (*input_line_pointer == ',') 1557 ++input_line_pointer; 1558 1559 SKIP_WHITESPACE (); 1560 if ( *input_line_pointer == '#' 1561 || *input_line_pointer == '@' 1562 || *input_line_pointer == '"' 1563 || *input_line_pointer == '%') 1564 ++input_line_pointer; 1565 1566 typename = input_line_pointer; 1567 c = get_symbol_end (); 1568 1569 type = 0; 1570 if (strcmp (typename, "function") == 0 1571 || strcmp (typename, "STT_FUNC") == 0) 1572 type = BSF_FUNCTION; 1573 else if (strcmp (typename, "object") == 0 1574 || strcmp (typename, "STT_OBJECT") == 0) 1575 type = BSF_OBJECT; 1576 else if (strcmp (typename, "tls_object") == 0 1577 || strcmp (typename, "STT_TLS") == 0) 1578 type = BSF_OBJECT | BSF_THREAD_LOCAL; 1579 else if (strcmp (typename, "notype") == 0 1580 || strcmp (typename, "STT_NOTYPE") == 0) 1581 ; 1582#ifdef md_elf_symbol_type 1583 else if ((type = md_elf_symbol_type (typename, sym, elfsym)) != -1) 1584 ; 1585#endif 1586 else 1587 as_bad (_("unrecognized symbol type \"%s\""), typename); 1588 1589 *input_line_pointer = c; 1590 1591 if (*input_line_pointer == '"') 1592 ++input_line_pointer; 1593 1594 elfsym->symbol.flags |= type; 1595 1596 demand_empty_rest_of_line (); 1597} 1598 1599static void 1600obj_elf_ident (int ignore ATTRIBUTE_UNUSED) 1601{ 1602 static segT comment_section; 1603 segT old_section = now_seg; 1604 int old_subsection = now_subseg; 1605 1606#ifdef md_flush_pending_output 1607 md_flush_pending_output (); 1608#endif 1609 1610 if (!comment_section) 1611 { 1612 char *p; 1613 comment_section = subseg_new (".comment", 0); 1614 bfd_set_section_flags (stdoutput, comment_section, 1615 SEC_READONLY | SEC_HAS_CONTENTS); 1616 p = frag_more (1); 1617 *p = 0; 1618 } 1619 else 1620 subseg_set (comment_section, 0); 1621 stringer (1); 1622 subseg_set (old_section, old_subsection); 1623} 1624 1625#ifdef INIT_STAB_SECTION 1626 1627/* The first entry in a .stabs section is special. */ 1628 1629void 1630obj_elf_init_stab_section (segT seg) 1631{ 1632 char *file; 1633 char *p; 1634 char *stabstr_name; 1635 unsigned int stroff; 1636 1637 /* Force the section to align to a longword boundary. Without this, 1638 UnixWare ar crashes. */ 1639 (void) bfd_set_section_alignment (stdoutput, seg, 2); 1640 1641 /* Make space for this first symbol. */ 1642 p = frag_more (12); 1643 /* Zero it out. */ 1644 memset (p, 0, 12); 1645 as_where (&file, NULL); 1646 stabstr_name = xmalloc (strlen (segment_name (seg)) + 4); 1647 strcpy (stabstr_name, segment_name (seg)); 1648 strcat (stabstr_name, "str"); 1649 stroff = get_stab_string_offset (file, stabstr_name); 1650 know (stroff == 1); 1651 md_number_to_chars (p, stroff, 4); 1652 seg_info (seg)->stabu.p = p; 1653} 1654 1655#endif 1656 1657/* Fill in the counts in the first entry in a .stabs section. */ 1658 1659static void 1660adjust_stab_sections (bfd *abfd, asection *sec, void *xxx ATTRIBUTE_UNUSED) 1661{ 1662 char *name; 1663 asection *strsec; 1664 char *p; 1665 int strsz, nsyms; 1666 1667 if (strncmp (".stab", sec->name, 5)) 1668 return; 1669 if (!strcmp ("str", sec->name + strlen (sec->name) - 3)) 1670 return; 1671 1672 name = alloca (strlen (sec->name) + 4); 1673 strcpy (name, sec->name); 1674 strcat (name, "str"); 1675 strsec = bfd_get_section_by_name (abfd, name); 1676 if (strsec) 1677 strsz = bfd_section_size (abfd, strsec); 1678 else 1679 strsz = 0; 1680 nsyms = bfd_section_size (abfd, sec) / 12 - 1; 1681 1682 p = seg_info (sec)->stabu.p; 1683 assert (p != 0); 1684 1685 bfd_h_put_16 (abfd, nsyms, p + 6); 1686 bfd_h_put_32 (abfd, strsz, p + 8); 1687} 1688 1689#ifdef NEED_ECOFF_DEBUG 1690 1691/* This function is called by the ECOFF code. It is supposed to 1692 record the external symbol information so that the backend can 1693 write it out correctly. The ELF backend doesn't actually handle 1694 this at the moment, so we do it ourselves. We save the information 1695 in the symbol. */ 1696 1697#ifdef OBJ_MAYBE_ELF 1698static 1699#endif 1700void 1701elf_ecoff_set_ext (symbolS *sym, struct ecoff_extr *ext) 1702{ 1703 symbol_get_bfdsym (sym)->udata.p = ext; 1704} 1705 1706/* This function is called by bfd_ecoff_debug_externals. It is 1707 supposed to *EXT to the external symbol information, and return 1708 whether the symbol should be used at all. */ 1709 1710static bfd_boolean 1711elf_get_extr (asymbol *sym, EXTR *ext) 1712{ 1713 if (sym->udata.p == NULL) 1714 return FALSE; 1715 *ext = *(EXTR *) sym->udata.p; 1716 return TRUE; 1717} 1718 1719/* This function is called by bfd_ecoff_debug_externals. It has 1720 nothing to do for ELF. */ 1721 1722static void 1723elf_set_index (asymbol *sym ATTRIBUTE_UNUSED, 1724 bfd_size_type indx ATTRIBUTE_UNUSED) 1725{ 1726} 1727 1728#endif /* NEED_ECOFF_DEBUG */ 1729 1730void 1731elf_frob_symbol (symbolS *symp, int *puntp) 1732{ 1733 struct elf_obj_sy *sy_obj; 1734 1735#ifdef NEED_ECOFF_DEBUG 1736 if (ECOFF_DEBUGGING) 1737 ecoff_frob_symbol (symp); 1738#endif 1739 1740 sy_obj = symbol_get_obj (symp); 1741 1742 if (sy_obj->size != NULL) 1743 { 1744 switch (sy_obj->size->X_op) 1745 { 1746 case O_subtract: 1747 S_SET_SIZE (symp, 1748 (S_GET_VALUE (sy_obj->size->X_add_symbol) 1749 + sy_obj->size->X_add_number 1750 - S_GET_VALUE (sy_obj->size->X_op_symbol))); 1751 break; 1752 case O_constant: 1753 S_SET_SIZE (symp, 1754 (S_GET_VALUE (sy_obj->size->X_add_symbol) 1755 + sy_obj->size->X_add_number)); 1756 break; 1757 default: 1758 as_bad (_(".size expression too complicated to fix up")); 1759 break; 1760 } 1761 free (sy_obj->size); 1762 sy_obj->size = NULL; 1763 } 1764 1765 if (sy_obj->versioned_name != NULL) 1766 { 1767 char *p; 1768 1769 p = strchr (sy_obj->versioned_name, ELF_VER_CHR); 1770 know (p != NULL); 1771 1772 /* This symbol was given a new name with the .symver directive. 1773 1774 If this is an external reference, just rename the symbol to 1775 include the version string. This will make the relocs be 1776 against the correct versioned symbol. 1777 1778 If this is a definition, add an alias. FIXME: Using an alias 1779 will permit the debugging information to refer to the right 1780 symbol. However, it's not clear whether it is the best 1781 approach. */ 1782 1783 if (! S_IS_DEFINED (symp)) 1784 { 1785 /* Verify that the name isn't using the @@ syntax--this is 1786 reserved for definitions of the default version to link 1787 against. */ 1788 if (p[1] == ELF_VER_CHR) 1789 { 1790 as_bad (_("invalid attempt to declare external version name as default in symbol `%s'"), 1791 sy_obj->versioned_name); 1792 *puntp = TRUE; 1793 } 1794 S_SET_NAME (symp, sy_obj->versioned_name); 1795 } 1796 else 1797 { 1798 if (p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) 1799 { 1800 size_t l; 1801 1802 /* The @@@ syntax is a special case. It renames the 1803 symbol name to versioned_name with one `@' removed. */ 1804 l = strlen (&p[3]) + 1; 1805 memmove (&p[2], &p[3], l); 1806 S_SET_NAME (symp, sy_obj->versioned_name); 1807 } 1808 else 1809 { 1810 symbolS *symp2; 1811 1812 /* FIXME: Creating a new symbol here is risky. We're 1813 in the final loop over the symbol table. We can 1814 get away with it only because the symbol goes to 1815 the end of the list, where the loop will still see 1816 it. It would probably be better to do this in 1817 obj_frob_file_before_adjust. */ 1818 1819 symp2 = symbol_find_or_make (sy_obj->versioned_name); 1820 1821 /* Now we act as though we saw symp2 = sym. */ 1822 1823 S_SET_SEGMENT (symp2, S_GET_SEGMENT (symp)); 1824 1825 /* Subtracting out the frag address here is a hack 1826 because we are in the middle of the final loop. */ 1827 S_SET_VALUE (symp2, 1828 (S_GET_VALUE (symp) 1829 - symbol_get_frag (symp)->fr_address)); 1830 1831 symbol_set_frag (symp2, symbol_get_frag (symp)); 1832 1833 /* This will copy over the size information. */ 1834 copy_symbol_attributes (symp2, symp); 1835 1836 S_SET_OTHER (symp2, S_GET_OTHER (symp)); 1837 1838 if (S_IS_WEAK (symp)) 1839 S_SET_WEAK (symp2); 1840 1841 if (S_IS_EXTERNAL (symp)) 1842 S_SET_EXTERNAL (symp2); 1843 } 1844 } 1845 } 1846 1847 /* Double check weak symbols. */ 1848 if (S_IS_WEAK (symp)) 1849 { 1850 if (S_IS_COMMON (symp)) 1851 as_bad (_("symbol `%s' can not be both weak and common"), 1852 S_GET_NAME (symp)); 1853 } 1854 1855#ifdef TC_MIPS 1856 /* The Irix 5 and 6 assemblers set the type of any common symbol and 1857 any undefined non-function symbol to STT_OBJECT. We try to be 1858 compatible, since newer Irix 5 and 6 linkers care. However, we 1859 only set undefined symbols to be STT_OBJECT if we are on Irix, 1860 because that is the only time gcc will generate the necessary 1861 .global directives to mark functions. */ 1862 1863 if (S_IS_COMMON (symp)) 1864 symbol_get_bfdsym (symp)->flags |= BSF_OBJECT; 1865 1866 if (strstr (TARGET_OS, "irix") != NULL 1867 && ! S_IS_DEFINED (symp) 1868 && (symbol_get_bfdsym (symp)->flags & BSF_FUNCTION) == 0) 1869 symbol_get_bfdsym (symp)->flags |= BSF_OBJECT; 1870#endif 1871} 1872 1873struct group_list 1874{ 1875 asection **head; /* Section lists. */ 1876 unsigned int *elt_count; /* Number of sections in each list. */ 1877 unsigned int num_group; /* Number of lists. */ 1878}; 1879 1880/* Called via bfd_map_over_sections. If SEC is a member of a group, 1881 add it to a list of sections belonging to the group. INF is a 1882 pointer to a struct group_list, which is where we store the head of 1883 each list. */ 1884 1885static void 1886build_group_lists (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf) 1887{ 1888 struct group_list *list = inf; 1889 const char *group_name = elf_group_name (sec); 1890 unsigned int i; 1891 1892 if (group_name == NULL) 1893 return; 1894 1895 /* If this group already has a list, add the section to the head of 1896 the list. */ 1897 for (i = 0; i < list->num_group; i++) 1898 { 1899 if (strcmp (group_name, elf_group_name (list->head[i])) == 0) 1900 { 1901 elf_next_in_group (sec) = list->head[i]; 1902 list->head[i] = sec; 1903 list->elt_count[i] += 1; 1904 return; 1905 } 1906 } 1907 1908 /* New group. Make the arrays bigger in chunks to minimize calls to 1909 realloc. */ 1910 i = list->num_group; 1911 if ((i & 127) == 0) 1912 { 1913 unsigned int newsize = i + 128; 1914 list->head = xrealloc (list->head, newsize * sizeof (*list->head)); 1915 list->elt_count = xrealloc (list->elt_count, 1916 newsize * sizeof (*list->elt_count)); 1917 } 1918 list->head[i] = sec; 1919 list->elt_count[i] = 1; 1920 list->num_group += 1; 1921} 1922 1923void 1924elf_frob_file (void) 1925{ 1926 struct group_list list; 1927 unsigned int i; 1928 1929 bfd_map_over_sections (stdoutput, adjust_stab_sections, NULL); 1930 1931 /* Go find section groups. */ 1932 list.num_group = 0; 1933 list.head = NULL; 1934 list.elt_count = NULL; 1935 bfd_map_over_sections (stdoutput, build_group_lists, &list); 1936 1937 /* Make the SHT_GROUP sections that describe each section group. We 1938 can't set up the section contents here yet, because elf section 1939 indices have yet to be calculated. elf.c:set_group_contents does 1940 the rest of the work. */ 1941 for (i = 0; i < list.num_group; i++) 1942 { 1943 const char *group_name = elf_group_name (list.head[i]); 1944 const char *sec_name; 1945 asection *s; 1946 flagword flags; 1947 struct symbol *sy; 1948 int has_sym; 1949 bfd_size_type size; 1950 1951 flags = SEC_READONLY | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_GROUP; 1952 for (s = list.head[i]; s != NULL; s = elf_next_in_group (s)) 1953 if ((s->flags ^ flags) & SEC_LINK_ONCE) 1954 { 1955 flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; 1956 if (s != list.head[i]) 1957 { 1958 as_warn (_("assuming all members of group `%s' are COMDAT"), 1959 group_name); 1960 break; 1961 } 1962 } 1963 1964 sec_name = group_name; 1965 sy = symbol_find_exact (group_name); 1966 has_sym = 0; 1967 if (sy != NULL 1968 && (sy == symbol_lastP 1969 || (sy->sy_next != NULL 1970 && sy->sy_next->sy_previous == sy))) 1971 { 1972 has_sym = 1; 1973 sec_name = ".group"; 1974 } 1975 s = subseg_force_new (sec_name, 0); 1976 if (s == NULL 1977 || !bfd_set_section_flags (stdoutput, s, flags) 1978 || !bfd_set_section_alignment (stdoutput, s, 2)) 1979 { 1980 as_fatal (_("can't create group: %s"), 1981 bfd_errmsg (bfd_get_error ())); 1982 } 1983 elf_section_type (s) = SHT_GROUP; 1984 1985 /* Pass a pointer to the first section in this group. */ 1986 elf_next_in_group (s) = list.head[i]; 1987 if (has_sym) 1988 elf_group_id (s) = sy->bsym; 1989 1990 size = 4 * (list.elt_count[i] + 1); 1991 bfd_set_section_size (stdoutput, s, size); 1992 s->contents = (unsigned char *) frag_more (size); 1993 frag_now->fr_fix = frag_now_fix_octets (); 1994 frag_wane (frag_now); 1995 } 1996 1997#ifdef elf_tc_final_processing 1998 elf_tc_final_processing (); 1999#endif 2000} 2001 2002/* It removes any unneeded versioned symbols from the symbol table. */ 2003 2004void 2005elf_frob_file_before_adjust (void) 2006{ 2007 if (symbol_rootP) 2008 { 2009 symbolS *symp; 2010 2011 for (symp = symbol_rootP; symp; symp = symbol_next (symp)) 2012 if (!S_IS_DEFINED (symp)) 2013 { 2014 if (symbol_get_obj (symp)->versioned_name) 2015 { 2016 char *p; 2017 2018 /* The @@@ syntax is a special case. If the symbol is 2019 not defined, 2 `@'s will be removed from the 2020 versioned_name. */ 2021 2022 p = strchr (symbol_get_obj (symp)->versioned_name, 2023 ELF_VER_CHR); 2024 know (p != NULL); 2025 if (p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR) 2026 { 2027 size_t l = strlen (&p[3]) + 1; 2028 memmove (&p[1], &p[3], l); 2029 } 2030 if (symbol_used_p (symp) == 0 2031 && symbol_used_in_reloc_p (symp) == 0) 2032 symbol_remove (symp, &symbol_rootP, &symbol_lastP); 2033 } 2034 2035 /* If there was .weak foo, but foo was neither defined nor 2036 used anywhere, remove it. */ 2037 2038 else if (S_IS_WEAK (symp) 2039 && symbol_used_p (symp) == 0 2040 && symbol_used_in_reloc_p (symp) == 0) 2041 symbol_remove (symp, &symbol_rootP, &symbol_lastP); 2042 } 2043 } 2044} 2045 2046/* It is required that we let write_relocs have the opportunity to 2047 optimize away fixups before output has begun, since it is possible 2048 to eliminate all fixups for a section and thus we never should 2049 have generated the relocation section. */ 2050 2051void 2052elf_frob_file_after_relocs (void) 2053{ 2054#ifdef NEED_ECOFF_DEBUG 2055 if (ECOFF_DEBUGGING) 2056 /* Generate the ECOFF debugging information. */ 2057 { 2058 const struct ecoff_debug_swap *debug_swap; 2059 struct ecoff_debug_info debug; 2060 char *buf; 2061 asection *sec; 2062 2063 debug_swap 2064 = get_elf_backend_data (stdoutput)->elf_backend_ecoff_debug_swap; 2065 know (debug_swap != NULL); 2066 ecoff_build_debug (&debug.symbolic_header, &buf, debug_swap); 2067 2068 /* Set up the pointers in debug. */ 2069#define SET(ptr, offset, type) \ 2070 debug.ptr = (type) (buf + debug.symbolic_header.offset) 2071 2072 SET (line, cbLineOffset, unsigned char *); 2073 SET (external_dnr, cbDnOffset, void *); 2074 SET (external_pdr, cbPdOffset, void *); 2075 SET (external_sym, cbSymOffset, void *); 2076 SET (external_opt, cbOptOffset, void *); 2077 SET (external_aux, cbAuxOffset, union aux_ext *); 2078 SET (ss, cbSsOffset, char *); 2079 SET (external_fdr, cbFdOffset, void *); 2080 SET (external_rfd, cbRfdOffset, void *); 2081 /* ssext and external_ext are set up just below. */ 2082 2083#undef SET 2084 2085 /* Set up the external symbols. */ 2086 debug.ssext = debug.ssext_end = NULL; 2087 debug.external_ext = debug.external_ext_end = NULL; 2088 if (! bfd_ecoff_debug_externals (stdoutput, &debug, debug_swap, TRUE, 2089 elf_get_extr, elf_set_index)) 2090 as_fatal (_("failed to set up debugging information: %s"), 2091 bfd_errmsg (bfd_get_error ())); 2092 2093 sec = bfd_get_section_by_name (stdoutput, ".mdebug"); 2094 assert (sec != NULL); 2095 2096 know (!stdoutput->output_has_begun); 2097 2098 /* We set the size of the section, call bfd_set_section_contents 2099 to force the ELF backend to allocate a file position, and then 2100 write out the data. FIXME: Is this really the best way to do 2101 this? */ 2102 bfd_set_section_size 2103 (stdoutput, sec, bfd_ecoff_debug_size (stdoutput, &debug, debug_swap)); 2104 2105 /* Pass BUF to bfd_set_section_contents because this will 2106 eventually become a call to fwrite, and ISO C prohibits 2107 passing a NULL pointer to a stdio function even if the 2108 pointer will not be used. */ 2109 if (! bfd_set_section_contents (stdoutput, sec, buf, 0, 0)) 2110 as_fatal (_("can't start writing .mdebug section: %s"), 2111 bfd_errmsg (bfd_get_error ())); 2112 2113 know (stdoutput->output_has_begun); 2114 know (sec->filepos != 0); 2115 2116 if (! bfd_ecoff_write_debug (stdoutput, &debug, debug_swap, 2117 sec->filepos)) 2118 as_fatal (_("could not write .mdebug section: %s"), 2119 bfd_errmsg (bfd_get_error ())); 2120 } 2121#endif /* NEED_ECOFF_DEBUG */ 2122} 2123 2124#ifdef SCO_ELF 2125 2126/* Heavily plagiarized from obj_elf_version. The idea is to emit the 2127 SCO specific identifier in the .notes section to satisfy the SCO 2128 linker. 2129 2130 This looks more complicated than it really is. As opposed to the 2131 "obvious" solution, this should handle the cross dev cases 2132 correctly. (i.e, hosting on a 64 bit big endian processor, but 2133 generating SCO Elf code) Efficiency isn't a concern, as there 2134 should be exactly one of these sections per object module. 2135 2136 SCO OpenServer 5 identifies it's ELF modules with a standard ELF 2137 .note section. 2138 2139 int_32 namesz = 4 ; Name size 2140 int_32 descsz = 12 ; Descriptive information 2141 int_32 type = 1 ; 2142 char name[4] = "SCO" ; Originator name ALWAYS SCO + NULL 2143 int_32 version = (major ver # << 16) | version of tools ; 2144 int_32 source = (tool_id << 16 ) | 1 ; 2145 int_32 info = 0 ; These are set by the SCO tools, but we 2146 don't know enough about the source 2147 environment to set them. SCO ld currently 2148 ignores them, and recommends we set them 2149 to zero. */ 2150 2151#define SCO_MAJOR_VERSION 0x1 2152#define SCO_MINOR_VERSION 0x1 2153 2154void 2155sco_id (void) 2156{ 2157 2158 char *name; 2159 unsigned int c; 2160 char ch; 2161 char *p; 2162 asection *seg = now_seg; 2163 subsegT subseg = now_subseg; 2164 Elf_Internal_Note i_note; 2165 Elf_External_Note e_note; 2166 asection *note_secp = NULL; 2167 int i, len; 2168 2169 /* create the .note section */ 2170 2171 note_secp = subseg_new (".note", 0); 2172 bfd_set_section_flags (stdoutput, 2173 note_secp, 2174 SEC_HAS_CONTENTS | SEC_READONLY); 2175 2176 /* process the version string */ 2177 2178 i_note.namesz = 4; 2179 i_note.descsz = 12; /* 12 descriptive bytes */ 2180 i_note.type = NT_VERSION; /* Contains a version string */ 2181 2182 p = frag_more (sizeof (i_note.namesz)); 2183 md_number_to_chars (p, i_note.namesz, 4); 2184 2185 p = frag_more (sizeof (i_note.descsz)); 2186 md_number_to_chars (p, i_note.descsz, 4); 2187 2188 p = frag_more (sizeof (i_note.type)); 2189 md_number_to_chars (p, i_note.type, 4); 2190 2191 p = frag_more (4); 2192 strcpy (p, "SCO"); 2193 2194 /* Note: this is the version number of the ELF we're representing */ 2195 p = frag_more (4); 2196 md_number_to_chars (p, (SCO_MAJOR_VERSION << 16) | (SCO_MINOR_VERSION), 4); 2197 2198 /* Here, we pick a magic number for ourselves (yes, I "registered" 2199 it with SCO. The bottom bit shows that we are compat with the 2200 SCO ABI. */ 2201 p = frag_more (4); 2202 md_number_to_chars (p, 0x4c520000 | 0x0001, 4); 2203 2204 /* If we knew (or cared) what the source language options were, we'd 2205 fill them in here. SCO has given us permission to ignore these 2206 and just set them to zero. */ 2207 p = frag_more (4); 2208 md_number_to_chars (p, 0x0000, 4); 2209 2210 frag_align (2, 0, 0); 2211 2212 /* We probably can't restore the current segment, for there likely 2213 isn't one yet... */ 2214 if (seg && subseg) 2215 subseg_set (seg, subseg); 2216 2217} 2218 2219#endif /* SCO_ELF */ 2220 2221static int 2222elf_separate_stab_sections (void) 2223{ 2224#ifdef NEED_ECOFF_DEBUG 2225 return (!ECOFF_DEBUGGING); 2226#else 2227 return 1; 2228#endif 2229} 2230 2231static void 2232elf_init_stab_section (segT seg) 2233{ 2234#ifdef NEED_ECOFF_DEBUG 2235 if (!ECOFF_DEBUGGING) 2236#endif 2237 obj_elf_init_stab_section (seg); 2238} 2239 2240const struct format_ops elf_format_ops = 2241{ 2242 bfd_target_elf_flavour, 2243 0, /* dfl_leading_underscore */ 2244 1, /* emit_section_symbols */ 2245 elf_begin, 2246 elf_file_symbol, 2247 elf_frob_symbol, 2248 elf_frob_file, 2249 elf_frob_file_before_adjust, 2250 0, /* obj_frob_file_before_fix */ 2251 elf_frob_file_after_relocs, 2252 elf_s_get_size, elf_s_set_size, 2253 elf_s_get_align, elf_s_set_align, 2254 elf_s_get_other, 2255 elf_s_set_other, 2256 0, /* s_get_desc */ 2257 0, /* s_set_desc */ 2258 0, /* s_get_type */ 2259 0, /* s_set_type */ 2260 elf_copy_symbol_attributes, 2261#ifdef NEED_ECOFF_DEBUG 2262 ecoff_generate_asm_lineno, 2263 ecoff_stab, 2264#else 2265 0, /* generate_asm_lineno */ 2266 0, /* process_stab */ 2267#endif 2268 elf_separate_stab_sections, 2269 elf_init_stab_section, 2270 elf_sec_sym_ok_for_reloc, 2271 elf_pop_insert, 2272#ifdef NEED_ECOFF_DEBUG 2273 elf_ecoff_set_ext, 2274#else 2275 0, /* ecoff_set_ext */ 2276#endif 2277 elf_obj_read_begin_hook, 2278 elf_obj_symbol_new_hook 2279}; 2280