1 /* ELF executable support for BFD.
3 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
4 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
5 Free Software Foundation, Inc.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
29 BFD support for ELF formats is being worked on.
30 Currently, the best supported back ends are for sparc and i386
31 (running svr4 or Solaris 2).
33 Documentation of the internals of the support code still needs
34 to be written. The code is changing quickly enough that we
35 haven't bothered yet. */
37 /* For sparc64-cross-sparc32. */
45 #include "libiberty.h"
46 #include "safe-ctype.h"
52 static int elf_sort_sections (const void *, const void *);
53 static bfd_boolean assign_file_positions_except_relocs (bfd *, struct bfd_link_info *);
54 static bfd_boolean prep_headers (bfd *);
55 static bfd_boolean swap_out_syms (bfd *, struct bfd_strtab_hash **, int) ;
56 static bfd_boolean elf_read_notes (bfd *, file_ptr, bfd_size_type) ;
57 static bfd_boolean elf_parse_notes (bfd *abfd, char *buf, size_t size,
60 /* Swap version information in and out. The version information is
61 currently size independent. If that ever changes, this code will
62 need to move into elfcode.h. */
64 /* Swap in a Verdef structure. */
67 _bfd_elf_swap_verdef_in (bfd *abfd,
68 const Elf_External_Verdef *src,
69 Elf_Internal_Verdef *dst)
71 dst->vd_version = H_GET_16 (abfd, src->vd_version);
72 dst->vd_flags = H_GET_16 (abfd, src->vd_flags);
73 dst->vd_ndx = H_GET_16 (abfd, src->vd_ndx);
74 dst->vd_cnt = H_GET_16 (abfd, src->vd_cnt);
75 dst->vd_hash = H_GET_32 (abfd, src->vd_hash);
76 dst->vd_aux = H_GET_32 (abfd, src->vd_aux);
77 dst->vd_next = H_GET_32 (abfd, src->vd_next);
80 /* Swap out a Verdef structure. */
83 _bfd_elf_swap_verdef_out (bfd *abfd,
84 const Elf_Internal_Verdef *src,
85 Elf_External_Verdef *dst)
87 H_PUT_16 (abfd, src->vd_version, dst->vd_version);
88 H_PUT_16 (abfd, src->vd_flags, dst->vd_flags);
89 H_PUT_16 (abfd, src->vd_ndx, dst->vd_ndx);
90 H_PUT_16 (abfd, src->vd_cnt, dst->vd_cnt);
91 H_PUT_32 (abfd, src->vd_hash, dst->vd_hash);
92 H_PUT_32 (abfd, src->vd_aux, dst->vd_aux);
93 H_PUT_32 (abfd, src->vd_next, dst->vd_next);
96 /* Swap in a Verdaux structure. */
99 _bfd_elf_swap_verdaux_in (bfd *abfd,
100 const Elf_External_Verdaux *src,
101 Elf_Internal_Verdaux *dst)
103 dst->vda_name = H_GET_32 (abfd, src->vda_name);
104 dst->vda_next = H_GET_32 (abfd, src->vda_next);
107 /* Swap out a Verdaux structure. */
110 _bfd_elf_swap_verdaux_out (bfd *abfd,
111 const Elf_Internal_Verdaux *src,
112 Elf_External_Verdaux *dst)
114 H_PUT_32 (abfd, src->vda_name, dst->vda_name);
115 H_PUT_32 (abfd, src->vda_next, dst->vda_next);
118 /* Swap in a Verneed structure. */
121 _bfd_elf_swap_verneed_in (bfd *abfd,
122 const Elf_External_Verneed *src,
123 Elf_Internal_Verneed *dst)
125 dst->vn_version = H_GET_16 (abfd, src->vn_version);
126 dst->vn_cnt = H_GET_16 (abfd, src->vn_cnt);
127 dst->vn_file = H_GET_32 (abfd, src->vn_file);
128 dst->vn_aux = H_GET_32 (abfd, src->vn_aux);
129 dst->vn_next = H_GET_32 (abfd, src->vn_next);
132 /* Swap out a Verneed structure. */
135 _bfd_elf_swap_verneed_out (bfd *abfd,
136 const Elf_Internal_Verneed *src,
137 Elf_External_Verneed *dst)
139 H_PUT_16 (abfd, src->vn_version, dst->vn_version);
140 H_PUT_16 (abfd, src->vn_cnt, dst->vn_cnt);
141 H_PUT_32 (abfd, src->vn_file, dst->vn_file);
142 H_PUT_32 (abfd, src->vn_aux, dst->vn_aux);
143 H_PUT_32 (abfd, src->vn_next, dst->vn_next);
146 /* Swap in a Vernaux structure. */
149 _bfd_elf_swap_vernaux_in (bfd *abfd,
150 const Elf_External_Vernaux *src,
151 Elf_Internal_Vernaux *dst)
153 dst->vna_hash = H_GET_32 (abfd, src->vna_hash);
154 dst->vna_flags = H_GET_16 (abfd, src->vna_flags);
155 dst->vna_other = H_GET_16 (abfd, src->vna_other);
156 dst->vna_name = H_GET_32 (abfd, src->vna_name);
157 dst->vna_next = H_GET_32 (abfd, src->vna_next);
160 /* Swap out a Vernaux structure. */
163 _bfd_elf_swap_vernaux_out (bfd *abfd,
164 const Elf_Internal_Vernaux *src,
165 Elf_External_Vernaux *dst)
167 H_PUT_32 (abfd, src->vna_hash, dst->vna_hash);
168 H_PUT_16 (abfd, src->vna_flags, dst->vna_flags);
169 H_PUT_16 (abfd, src->vna_other, dst->vna_other);
170 H_PUT_32 (abfd, src->vna_name, dst->vna_name);
171 H_PUT_32 (abfd, src->vna_next, dst->vna_next);
174 /* Swap in a Versym structure. */
177 _bfd_elf_swap_versym_in (bfd *abfd,
178 const Elf_External_Versym *src,
179 Elf_Internal_Versym *dst)
181 dst->vs_vers = H_GET_16 (abfd, src->vs_vers);
184 /* Swap out a Versym structure. */
187 _bfd_elf_swap_versym_out (bfd *abfd,
188 const Elf_Internal_Versym *src,
189 Elf_External_Versym *dst)
191 H_PUT_16 (abfd, src->vs_vers, dst->vs_vers);
194 /* Standard ELF hash function. Do not change this function; you will
195 cause invalid hash tables to be generated. */
198 bfd_elf_hash (const char *namearg)
200 const unsigned char *name = (const unsigned char *) namearg;
205 while ((ch = *name++) != '\0')
208 if ((g = (h & 0xf0000000)) != 0)
211 /* The ELF ABI says `h &= ~g', but this is equivalent in
212 this case and on some machines one insn instead of two. */
216 return h & 0xffffffff;
219 /* DT_GNU_HASH hash function. Do not change this function; you will
220 cause invalid hash tables to be generated. */
223 bfd_elf_gnu_hash (const char *namearg)
225 const unsigned char *name = (const unsigned char *) namearg;
226 unsigned long h = 5381;
229 while ((ch = *name++) != '\0')
230 h = (h << 5) + h + ch;
231 return h & 0xffffffff;
234 /* Create a tdata field OBJECT_SIZE bytes in length, zeroed out and with
235 the object_id field of an elf_obj_tdata field set to OBJECT_ID. */
237 bfd_elf_allocate_object (bfd *abfd,
239 enum elf_target_id object_id)
241 BFD_ASSERT (object_size >= sizeof (struct elf_obj_tdata));
242 abfd->tdata.any = bfd_zalloc (abfd, object_size);
243 if (abfd->tdata.any == NULL)
246 elf_object_id (abfd) = object_id;
247 elf_program_header_size (abfd) = (bfd_size_type) -1;
253 bfd_elf_make_object (bfd *abfd)
255 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
256 return bfd_elf_allocate_object (abfd, sizeof (struct elf_obj_tdata),
261 bfd_elf_mkcorefile (bfd *abfd)
263 /* I think this can be done just like an object file. */
264 return abfd->xvec->_bfd_set_format[(int) bfd_object] (abfd);
268 bfd_elf_get_str_section (bfd *abfd, unsigned int shindex)
270 Elf_Internal_Shdr **i_shdrp;
271 bfd_byte *shstrtab = NULL;
273 bfd_size_type shstrtabsize;
275 i_shdrp = elf_elfsections (abfd);
277 || shindex >= elf_numsections (abfd)
278 || i_shdrp[shindex] == 0)
281 shstrtab = i_shdrp[shindex]->contents;
282 if (shstrtab == NULL)
284 /* No cached one, attempt to read, and cache what we read. */
285 offset = i_shdrp[shindex]->sh_offset;
286 shstrtabsize = i_shdrp[shindex]->sh_size;
288 /* Allocate and clear an extra byte at the end, to prevent crashes
289 in case the string table is not terminated. */
290 if (shstrtabsize + 1 <= 1
291 || (shstrtab = (bfd_byte *) bfd_alloc (abfd, shstrtabsize + 1)) == NULL
292 || bfd_seek (abfd, offset, SEEK_SET) != 0)
294 else if (bfd_bread (shstrtab, shstrtabsize, abfd) != shstrtabsize)
296 if (bfd_get_error () != bfd_error_system_call)
297 bfd_set_error (bfd_error_file_truncated);
299 /* Once we've failed to read it, make sure we don't keep
300 trying. Otherwise, we'll keep allocating space for
301 the string table over and over. */
302 i_shdrp[shindex]->sh_size = 0;
305 shstrtab[shstrtabsize] = '\0';
306 i_shdrp[shindex]->contents = shstrtab;
308 return (char *) shstrtab;
312 bfd_elf_string_from_elf_section (bfd *abfd,
313 unsigned int shindex,
314 unsigned int strindex)
316 Elf_Internal_Shdr *hdr;
321 if (elf_elfsections (abfd) == NULL || shindex >= elf_numsections (abfd))
324 hdr = elf_elfsections (abfd)[shindex];
326 if (hdr->contents == NULL
327 && bfd_elf_get_str_section (abfd, shindex) == NULL)
330 if (strindex >= hdr->sh_size)
332 unsigned int shstrndx = elf_elfheader(abfd)->e_shstrndx;
333 (*_bfd_error_handler)
334 (_("%B: invalid string offset %u >= %lu for section `%s'"),
335 abfd, strindex, (unsigned long) hdr->sh_size,
336 (shindex == shstrndx && strindex == hdr->sh_name
338 : bfd_elf_string_from_elf_section (abfd, shstrndx, hdr->sh_name)));
342 return ((char *) hdr->contents) + strindex;
345 /* Read and convert symbols to internal format.
346 SYMCOUNT specifies the number of symbols to read, starting from
347 symbol SYMOFFSET. If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF
348 are non-NULL, they are used to store the internal symbols, external
349 symbols, and symbol section index extensions, respectively.
350 Returns a pointer to the internal symbol buffer (malloced if necessary)
351 or NULL if there were no symbols or some kind of problem. */
354 bfd_elf_get_elf_syms (bfd *ibfd,
355 Elf_Internal_Shdr *symtab_hdr,
358 Elf_Internal_Sym *intsym_buf,
360 Elf_External_Sym_Shndx *extshndx_buf)
362 Elf_Internal_Shdr *shndx_hdr;
364 const bfd_byte *esym;
365 Elf_External_Sym_Shndx *alloc_extshndx;
366 Elf_External_Sym_Shndx *shndx;
367 Elf_Internal_Sym *alloc_intsym;
368 Elf_Internal_Sym *isym;
369 Elf_Internal_Sym *isymend;
370 const struct elf_backend_data *bed;
375 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
381 /* Normal syms might have section extension entries. */
383 if (symtab_hdr == &elf_tdata (ibfd)->symtab_hdr)
384 shndx_hdr = &elf_tdata (ibfd)->symtab_shndx_hdr;
386 /* Read the symbols. */
388 alloc_extshndx = NULL;
390 bed = get_elf_backend_data (ibfd);
391 extsym_size = bed->s->sizeof_sym;
392 amt = symcount * extsym_size;
393 pos = symtab_hdr->sh_offset + symoffset * extsym_size;
394 if (extsym_buf == NULL)
396 alloc_ext = bfd_malloc2 (symcount, extsym_size);
397 extsym_buf = alloc_ext;
399 if (extsym_buf == NULL
400 || bfd_seek (ibfd, pos, SEEK_SET) != 0
401 || bfd_bread (extsym_buf, amt, ibfd) != amt)
407 if (shndx_hdr == NULL || shndx_hdr->sh_size == 0)
411 amt = symcount * sizeof (Elf_External_Sym_Shndx);
412 pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx);
413 if (extshndx_buf == NULL)
415 alloc_extshndx = (Elf_External_Sym_Shndx *)
416 bfd_malloc2 (symcount, sizeof (Elf_External_Sym_Shndx));
417 extshndx_buf = alloc_extshndx;
419 if (extshndx_buf == NULL
420 || bfd_seek (ibfd, pos, SEEK_SET) != 0
421 || bfd_bread (extshndx_buf, amt, ibfd) != amt)
428 if (intsym_buf == NULL)
430 alloc_intsym = (Elf_Internal_Sym *)
431 bfd_malloc2 (symcount, sizeof (Elf_Internal_Sym));
432 intsym_buf = alloc_intsym;
433 if (intsym_buf == NULL)
437 /* Convert the symbols to internal form. */
438 isymend = intsym_buf + symcount;
439 for (esym = (const bfd_byte *) extsym_buf, isym = intsym_buf,
440 shndx = extshndx_buf;
442 esym += extsym_size, isym++, shndx = shndx != NULL ? shndx + 1 : NULL)
443 if (!(*bed->s->swap_symbol_in) (ibfd, esym, shndx, isym))
445 symoffset += (esym - (bfd_byte *) extsym_buf) / extsym_size;
446 (*_bfd_error_handler) (_("%B symbol number %lu references "
447 "nonexistent SHT_SYMTAB_SHNDX section"),
448 ibfd, (unsigned long) symoffset);
449 if (alloc_intsym != NULL)
456 if (alloc_ext != NULL)
458 if (alloc_extshndx != NULL)
459 free (alloc_extshndx);
464 /* Look up a symbol name. */
466 bfd_elf_sym_name (bfd *abfd,
467 Elf_Internal_Shdr *symtab_hdr,
468 Elf_Internal_Sym *isym,
472 unsigned int iname = isym->st_name;
473 unsigned int shindex = symtab_hdr->sh_link;
475 if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION
476 /* Check for a bogus st_shndx to avoid crashing. */
477 && isym->st_shndx < elf_numsections (abfd))
479 iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name;
480 shindex = elf_elfheader (abfd)->e_shstrndx;
483 name = bfd_elf_string_from_elf_section (abfd, shindex, iname);
486 else if (sym_sec && *name == '\0')
487 name = bfd_section_name (abfd, sym_sec);
492 /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP
493 sections. The first element is the flags, the rest are section
496 typedef union elf_internal_group {
497 Elf_Internal_Shdr *shdr;
499 } Elf_Internal_Group;
501 /* Return the name of the group signature symbol. Why isn't the
502 signature just a string? */
505 group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr)
507 Elf_Internal_Shdr *hdr;
508 unsigned char esym[sizeof (Elf64_External_Sym)];
509 Elf_External_Sym_Shndx eshndx;
510 Elf_Internal_Sym isym;
512 /* First we need to ensure the symbol table is available. Make sure
513 that it is a symbol table section. */
514 if (ghdr->sh_link >= elf_numsections (abfd))
516 hdr = elf_elfsections (abfd) [ghdr->sh_link];
517 if (hdr->sh_type != SHT_SYMTAB
518 || ! bfd_section_from_shdr (abfd, ghdr->sh_link))
521 /* Go read the symbol. */
522 hdr = &elf_tdata (abfd)->symtab_hdr;
523 if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info,
524 &isym, esym, &eshndx) == NULL)
527 return bfd_elf_sym_name (abfd, hdr, &isym, NULL);
530 /* Set next_in_group list pointer, and group name for NEWSECT. */
533 setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect)
535 unsigned int num_group = elf_tdata (abfd)->num_group;
537 /* If num_group is zero, read in all SHT_GROUP sections. The count
538 is set to -1 if there are no SHT_GROUP sections. */
541 unsigned int i, shnum;
543 /* First count the number of groups. If we have a SHT_GROUP
544 section with just a flag word (ie. sh_size is 4), ignore it. */
545 shnum = elf_numsections (abfd);
548 #define IS_VALID_GROUP_SECTION_HEADER(shdr) \
549 ( (shdr)->sh_type == SHT_GROUP \
550 && (shdr)->sh_size >= (2 * GRP_ENTRY_SIZE) \
551 && (shdr)->sh_entsize == GRP_ENTRY_SIZE \
552 && ((shdr)->sh_size % GRP_ENTRY_SIZE) == 0)
554 for (i = 0; i < shnum; i++)
556 Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i];
558 if (IS_VALID_GROUP_SECTION_HEADER (shdr))
564 num_group = (unsigned) -1;
565 elf_tdata (abfd)->num_group = num_group;
569 /* We keep a list of elf section headers for group sections,
570 so we can find them quickly. */
573 elf_tdata (abfd)->num_group = num_group;
574 elf_tdata (abfd)->group_sect_ptr = (Elf_Internal_Shdr **)
575 bfd_alloc2 (abfd, num_group, sizeof (Elf_Internal_Shdr *));
576 if (elf_tdata (abfd)->group_sect_ptr == NULL)
580 for (i = 0; i < shnum; i++)
582 Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i];
584 if (IS_VALID_GROUP_SECTION_HEADER (shdr))
587 Elf_Internal_Group *dest;
589 /* Add to list of sections. */
590 elf_tdata (abfd)->group_sect_ptr[num_group] = shdr;
593 /* Read the raw contents. */
594 BFD_ASSERT (sizeof (*dest) >= 4);
595 amt = shdr->sh_size * sizeof (*dest) / 4;
596 shdr->contents = (unsigned char *)
597 bfd_alloc2 (abfd, shdr->sh_size, sizeof (*dest) / 4);
598 /* PR binutils/4110: Handle corrupt group headers. */
599 if (shdr->contents == NULL)
602 (_("%B: Corrupt size field in group section header: 0x%lx"), abfd, shdr->sh_size);
603 bfd_set_error (bfd_error_bad_value);
607 memset (shdr->contents, 0, amt);
609 if (bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0
610 || (bfd_bread (shdr->contents, shdr->sh_size, abfd)
614 /* Translate raw contents, a flag word followed by an
615 array of elf section indices all in target byte order,
616 to the flag word followed by an array of elf section
618 src = shdr->contents + shdr->sh_size;
619 dest = (Elf_Internal_Group *) (shdr->contents + amt);
626 idx = H_GET_32 (abfd, src);
627 if (src == shdr->contents)
630 if (shdr->bfd_section != NULL && (idx & GRP_COMDAT))
631 shdr->bfd_section->flags
632 |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
637 ((*_bfd_error_handler)
638 (_("%B: invalid SHT_GROUP entry"), abfd));
641 dest->shdr = elf_elfsections (abfd)[idx];
648 if (num_group != (unsigned) -1)
652 for (i = 0; i < num_group; i++)
654 Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i];
655 Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents;
656 unsigned int n_elt = shdr->sh_size / 4;
658 /* Look through this group's sections to see if current
659 section is a member. */
661 if ((++idx)->shdr == hdr)
665 /* We are a member of this group. Go looking through
666 other members to see if any others are linked via
668 idx = (Elf_Internal_Group *) shdr->contents;
669 n_elt = shdr->sh_size / 4;
671 if ((s = (++idx)->shdr->bfd_section) != NULL
672 && elf_next_in_group (s) != NULL)
676 /* Snarf the group name from other member, and
677 insert current section in circular list. */
678 elf_group_name (newsect) = elf_group_name (s);
679 elf_next_in_group (newsect) = elf_next_in_group (s);
680 elf_next_in_group (s) = newsect;
686 gname = group_signature (abfd, shdr);
689 elf_group_name (newsect) = gname;
691 /* Start a circular list with one element. */
692 elf_next_in_group (newsect) = newsect;
695 /* If the group section has been created, point to the
697 if (shdr->bfd_section != NULL)
698 elf_next_in_group (shdr->bfd_section) = newsect;
706 if (elf_group_name (newsect) == NULL)
708 (*_bfd_error_handler) (_("%B: no group info for section %A"),
715 _bfd_elf_setup_sections (bfd *abfd)
718 unsigned int num_group = elf_tdata (abfd)->num_group;
719 bfd_boolean result = TRUE;
722 /* Process SHF_LINK_ORDER. */
723 for (s = abfd->sections; s != NULL; s = s->next)
725 Elf_Internal_Shdr *this_hdr = &elf_section_data (s)->this_hdr;
726 if ((this_hdr->sh_flags & SHF_LINK_ORDER) != 0)
728 unsigned int elfsec = this_hdr->sh_link;
729 /* FIXME: The old Intel compiler and old strip/objcopy may
730 not set the sh_link or sh_info fields. Hence we could
731 get the situation where elfsec is 0. */
734 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
735 if (bed->link_order_error_handler)
736 bed->link_order_error_handler
737 (_("%B: warning: sh_link not set for section `%A'"),
742 asection *linksec = NULL;
744 if (elfsec < elf_numsections (abfd))
746 this_hdr = elf_elfsections (abfd)[elfsec];
747 linksec = this_hdr->bfd_section;
751 Some strip/objcopy may leave an incorrect value in
752 sh_link. We don't want to proceed. */
755 (*_bfd_error_handler)
756 (_("%B: sh_link [%d] in section `%A' is incorrect"),
757 s->owner, s, elfsec);
761 elf_linked_to_section (s) = linksec;
766 /* Process section groups. */
767 if (num_group == (unsigned) -1)
770 for (i = 0; i < num_group; i++)
772 Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i];
773 Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents;
774 unsigned int n_elt = shdr->sh_size / 4;
777 if ((++idx)->shdr->bfd_section)
778 elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section;
779 else if (idx->shdr->sh_type == SHT_RELA
780 || idx->shdr->sh_type == SHT_REL)
781 /* We won't include relocation sections in section groups in
782 output object files. We adjust the group section size here
783 so that relocatable link will work correctly when
784 relocation sections are in section group in input object
786 shdr->bfd_section->size -= 4;
789 /* There are some unknown sections in the group. */
790 (*_bfd_error_handler)
791 (_("%B: unknown [%d] section `%s' in group [%s]"),
793 (unsigned int) idx->shdr->sh_type,
794 bfd_elf_string_from_elf_section (abfd,
795 (elf_elfheader (abfd)
798 shdr->bfd_section->name);
806 bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec)
808 return elf_next_in_group (sec) != NULL;
811 /* Make a BFD section from an ELF section. We store a pointer to the
812 BFD section in the bfd_section field of the header. */
815 _bfd_elf_make_section_from_shdr (bfd *abfd,
816 Elf_Internal_Shdr *hdr,
822 const struct elf_backend_data *bed;
824 if (hdr->bfd_section != NULL)
827 newsect = bfd_make_section_anyway (abfd, name);
831 hdr->bfd_section = newsect;
832 elf_section_data (newsect)->this_hdr = *hdr;
833 elf_section_data (newsect)->this_idx = shindex;
835 /* Always use the real type/flags. */
836 elf_section_type (newsect) = hdr->sh_type;
837 elf_section_flags (newsect) = hdr->sh_flags;
839 newsect->filepos = hdr->sh_offset;
841 if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr)
842 || ! bfd_set_section_size (abfd, newsect, hdr->sh_size)
843 || ! bfd_set_section_alignment (abfd, newsect,
844 bfd_log2 (hdr->sh_addralign)))
847 flags = SEC_NO_FLAGS;
848 if (hdr->sh_type != SHT_NOBITS)
849 flags |= SEC_HAS_CONTENTS;
850 if (hdr->sh_type == SHT_GROUP)
851 flags |= SEC_GROUP | SEC_EXCLUDE;
852 if ((hdr->sh_flags & SHF_ALLOC) != 0)
855 if (hdr->sh_type != SHT_NOBITS)
858 if ((hdr->sh_flags & SHF_WRITE) == 0)
859 flags |= SEC_READONLY;
860 if ((hdr->sh_flags & SHF_EXECINSTR) != 0)
862 else if ((flags & SEC_LOAD) != 0)
864 if ((hdr->sh_flags & SHF_MERGE) != 0)
867 newsect->entsize = hdr->sh_entsize;
868 if ((hdr->sh_flags & SHF_STRINGS) != 0)
869 flags |= SEC_STRINGS;
871 if (hdr->sh_flags & SHF_GROUP)
872 if (!setup_group (abfd, hdr, newsect))
874 if ((hdr->sh_flags & SHF_TLS) != 0)
875 flags |= SEC_THREAD_LOCAL;
876 if ((hdr->sh_flags & SHF_EXCLUDE) != 0)
877 flags |= SEC_EXCLUDE;
879 if ((flags & SEC_ALLOC) == 0)
881 /* The debugging sections appear to be recognized only by name,
882 not any sort of flag. Their SEC_ALLOC bits are cleared. */
887 } debug_sections [] =
889 { STRING_COMMA_LEN ("debug") }, /* 'd' */
890 { NULL, 0 }, /* 'e' */
891 { NULL, 0 }, /* 'f' */
892 { STRING_COMMA_LEN ("gnu.linkonce.wi.") }, /* 'g' */
893 { NULL, 0 }, /* 'h' */
894 { NULL, 0 }, /* 'i' */
895 { NULL, 0 }, /* 'j' */
896 { NULL, 0 }, /* 'k' */
897 { STRING_COMMA_LEN ("line") }, /* 'l' */
898 { NULL, 0 }, /* 'm' */
899 { NULL, 0 }, /* 'n' */
900 { NULL, 0 }, /* 'o' */
901 { NULL, 0 }, /* 'p' */
902 { NULL, 0 }, /* 'q' */
903 { NULL, 0 }, /* 'r' */
904 { STRING_COMMA_LEN ("stab") }, /* 's' */
905 { NULL, 0 }, /* 't' */
906 { NULL, 0 }, /* 'u' */
907 { NULL, 0 }, /* 'v' */
908 { NULL, 0 }, /* 'w' */
909 { NULL, 0 }, /* 'x' */
910 { NULL, 0 }, /* 'y' */
911 { STRING_COMMA_LEN ("zdebug") } /* 'z' */
916 int i = name [1] - 'd';
918 && i < (int) ARRAY_SIZE (debug_sections)
919 && debug_sections [i].name != NULL
920 && strncmp (&name [1], debug_sections [i].name,
921 debug_sections [i].len) == 0)
922 flags |= SEC_DEBUGGING;
926 /* As a GNU extension, if the name begins with .gnu.linkonce, we
927 only link a single copy of the section. This is used to support
928 g++. g++ will emit each template expansion in its own section.
929 The symbols will be defined as weak, so that multiple definitions
930 are permitted. The GNU linker extension is to actually discard
931 all but one of the sections. */
932 if (CONST_STRNEQ (name, ".gnu.linkonce")
933 && elf_next_in_group (newsect) == NULL)
934 flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
936 bed = get_elf_backend_data (abfd);
937 if (bed->elf_backend_section_flags)
938 if (! bed->elf_backend_section_flags (&flags, hdr))
941 if (! bfd_set_section_flags (abfd, newsect, flags))
944 /* We do not parse the PT_NOTE segments as we are interested even in the
945 separate debug info files which may have the segments offsets corrupted.
946 PT_NOTEs from the core files are currently not parsed using BFD. */
947 if (hdr->sh_type == SHT_NOTE)
951 if (!bfd_malloc_and_get_section (abfd, newsect, &contents))
954 elf_parse_notes (abfd, (char *) contents, hdr->sh_size, -1);
958 if ((flags & SEC_ALLOC) != 0)
960 Elf_Internal_Phdr *phdr;
961 unsigned int i, nload;
963 /* Some ELF linkers produce binaries with all the program header
964 p_paddr fields zero. If we have such a binary with more than
965 one PT_LOAD header, then leave the section lma equal to vma
966 so that we don't create sections with overlapping lma. */
967 phdr = elf_tdata (abfd)->phdr;
968 for (nload = 0, i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++)
969 if (phdr->p_paddr != 0)
971 else if (phdr->p_type == PT_LOAD && phdr->p_memsz != 0)
973 if (i >= elf_elfheader (abfd)->e_phnum && nload > 1)
976 phdr = elf_tdata (abfd)->phdr;
977 for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++)
979 if (((phdr->p_type == PT_LOAD
980 && (hdr->sh_flags & SHF_TLS) == 0)
981 || phdr->p_type == PT_TLS)
982 && ELF_SECTION_IN_SEGMENT (hdr, phdr))
984 if ((flags & SEC_LOAD) == 0)
985 newsect->lma = (phdr->p_paddr
986 + hdr->sh_addr - phdr->p_vaddr);
988 /* We used to use the same adjustment for SEC_LOAD
989 sections, but that doesn't work if the segment
990 is packed with code from multiple VMAs.
991 Instead we calculate the section LMA based on
992 the segment LMA. It is assumed that the
993 segment will contain sections with contiguous
994 LMAs, even if the VMAs are not. */
995 newsect->lma = (phdr->p_paddr
996 + hdr->sh_offset - phdr->p_offset);
998 /* With contiguous segments, we can't tell from file
999 offsets whether a section with zero size should
1000 be placed at the end of one segment or the
1001 beginning of the next. Decide based on vaddr. */
1002 if (hdr->sh_addr >= phdr->p_vaddr
1003 && (hdr->sh_addr + hdr->sh_size
1004 <= phdr->p_vaddr + phdr->p_memsz))
1010 /* Compress/decompress DWARF debug sections with names: .debug_* and
1011 .zdebug_*, after the section flags is set. */
1012 if ((flags & SEC_DEBUGGING)
1013 && ((name[1] == 'd' && name[6] == '_')
1014 || (name[1] == 'z' && name[7] == '_')))
1016 enum { nothing, compress, decompress } action = nothing;
1019 if (bfd_is_section_compressed (abfd, newsect))
1021 /* Compressed section. Check if we should decompress. */
1022 if ((abfd->flags & BFD_DECOMPRESS))
1023 action = decompress;
1027 /* Normal section. Check if we should compress. */
1028 if ((abfd->flags & BFD_COMPRESS))
1038 if (!bfd_init_section_compress_status (abfd, newsect))
1040 (*_bfd_error_handler)
1041 (_("%B: unable to initialize commpress status for section %s"),
1047 unsigned int len = strlen (name);
1049 new_name = bfd_alloc (abfd, len + 2);
1050 if (new_name == NULL)
1054 memcpy (new_name + 2, name + 1, len);
1058 if (!bfd_init_section_decompress_status (abfd, newsect))
1060 (*_bfd_error_handler)
1061 (_("%B: unable to initialize decommpress status for section %s"),
1067 unsigned int len = strlen (name);
1069 new_name = bfd_alloc (abfd, len);
1070 if (new_name == NULL)
1073 memcpy (new_name + 1, name + 2, len - 1);
1077 if (new_name != NULL)
1078 bfd_rename_section (abfd, newsect, new_name);
1084 const char *const bfd_elf_section_type_names[] = {
1085 "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB",
1086 "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE",
1087 "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM",
1090 /* ELF relocs are against symbols. If we are producing relocatable
1091 output, and the reloc is against an external symbol, and nothing
1092 has given us any additional addend, the resulting reloc will also
1093 be against the same symbol. In such a case, we don't want to
1094 change anything about the way the reloc is handled, since it will
1095 all be done at final link time. Rather than put special case code
1096 into bfd_perform_relocation, all the reloc types use this howto
1097 function. It just short circuits the reloc if producing
1098 relocatable output against an external symbol. */
1100 bfd_reloc_status_type
1101 bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1102 arelent *reloc_entry,
1104 void *data ATTRIBUTE_UNUSED,
1105 asection *input_section,
1107 char **error_message ATTRIBUTE_UNUSED)
1109 if (output_bfd != NULL
1110 && (symbol->flags & BSF_SECTION_SYM) == 0
1111 && (! reloc_entry->howto->partial_inplace
1112 || reloc_entry->addend == 0))
1114 reloc_entry->address += input_section->output_offset;
1115 return bfd_reloc_ok;
1118 return bfd_reloc_continue;
1121 /* Copy the program header and other data from one object module to
1125 _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
1127 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1128 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1131 BFD_ASSERT (!elf_flags_init (obfd)
1132 || (elf_elfheader (obfd)->e_flags
1133 == elf_elfheader (ibfd)->e_flags));
1135 elf_gp (obfd) = elf_gp (ibfd);
1136 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
1137 elf_flags_init (obfd) = TRUE;
1139 /* Copy object attributes. */
1140 _bfd_elf_copy_obj_attributes (ibfd, obfd);
1145 get_segment_type (unsigned int p_type)
1150 case PT_NULL: pt = "NULL"; break;
1151 case PT_LOAD: pt = "LOAD"; break;
1152 case PT_DYNAMIC: pt = "DYNAMIC"; break;
1153 case PT_INTERP: pt = "INTERP"; break;
1154 case PT_NOTE: pt = "NOTE"; break;
1155 case PT_SHLIB: pt = "SHLIB"; break;
1156 case PT_PHDR: pt = "PHDR"; break;
1157 case PT_TLS: pt = "TLS"; break;
1158 case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break;
1159 case PT_GNU_STACK: pt = "STACK"; break;
1160 case PT_GNU_RELRO: pt = "RELRO"; break;
1161 default: pt = NULL; break;
1166 /* Print out the program headers. */
1169 _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg)
1171 FILE *f = (FILE *) farg;
1172 Elf_Internal_Phdr *p;
1174 bfd_byte *dynbuf = NULL;
1176 p = elf_tdata (abfd)->phdr;
1181 fprintf (f, _("\nProgram Header:\n"));
1182 c = elf_elfheader (abfd)->e_phnum;
1183 for (i = 0; i < c; i++, p++)
1185 const char *pt = get_segment_type (p->p_type);
1190 sprintf (buf, "0x%lx", p->p_type);
1193 fprintf (f, "%8s off 0x", pt);
1194 bfd_fprintf_vma (abfd, f, p->p_offset);
1195 fprintf (f, " vaddr 0x");
1196 bfd_fprintf_vma (abfd, f, p->p_vaddr);
1197 fprintf (f, " paddr 0x");
1198 bfd_fprintf_vma (abfd, f, p->p_paddr);
1199 fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align));
1200 fprintf (f, " filesz 0x");
1201 bfd_fprintf_vma (abfd, f, p->p_filesz);
1202 fprintf (f, " memsz 0x");
1203 bfd_fprintf_vma (abfd, f, p->p_memsz);
1204 fprintf (f, " flags %c%c%c",
1205 (p->p_flags & PF_R) != 0 ? 'r' : '-',
1206 (p->p_flags & PF_W) != 0 ? 'w' : '-',
1207 (p->p_flags & PF_X) != 0 ? 'x' : '-');
1208 if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0)
1209 fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X));
1214 s = bfd_get_section_by_name (abfd, ".dynamic");
1217 unsigned int elfsec;
1218 unsigned long shlink;
1219 bfd_byte *extdyn, *extdynend;
1221 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
1223 fprintf (f, _("\nDynamic Section:\n"));
1225 if (!bfd_malloc_and_get_section (abfd, s, &dynbuf))
1228 elfsec = _bfd_elf_section_from_bfd_section (abfd, s);
1229 if (elfsec == SHN_BAD)
1231 shlink = elf_elfsections (abfd)[elfsec]->sh_link;
1233 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
1234 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
1237 extdynend = extdyn + s->size;
1238 for (; extdyn < extdynend; extdyn += extdynsize)
1240 Elf_Internal_Dyn dyn;
1241 const char *name = "";
1243 bfd_boolean stringp;
1244 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1246 (*swap_dyn_in) (abfd, extdyn, &dyn);
1248 if (dyn.d_tag == DT_NULL)
1255 if (bed->elf_backend_get_target_dtag)
1256 name = (*bed->elf_backend_get_target_dtag) (dyn.d_tag);
1258 if (!strcmp (name, ""))
1260 sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag);
1265 case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break;
1266 case DT_PLTRELSZ: name = "PLTRELSZ"; break;
1267 case DT_PLTGOT: name = "PLTGOT"; break;
1268 case DT_HASH: name = "HASH"; break;
1269 case DT_STRTAB: name = "STRTAB"; break;
1270 case DT_SYMTAB: name = "SYMTAB"; break;
1271 case DT_RELA: name = "RELA"; break;
1272 case DT_RELASZ: name = "RELASZ"; break;
1273 case DT_RELAENT: name = "RELAENT"; break;
1274 case DT_STRSZ: name = "STRSZ"; break;
1275 case DT_SYMENT: name = "SYMENT"; break;
1276 case DT_INIT: name = "INIT"; break;
1277 case DT_FINI: name = "FINI"; break;
1278 case DT_SONAME: name = "SONAME"; stringp = TRUE; break;
1279 case DT_RPATH: name = "RPATH"; stringp = TRUE; break;
1280 case DT_SYMBOLIC: name = "SYMBOLIC"; break;
1281 case DT_REL: name = "REL"; break;
1282 case DT_RELSZ: name = "RELSZ"; break;
1283 case DT_RELENT: name = "RELENT"; break;
1284 case DT_PLTREL: name = "PLTREL"; break;
1285 case DT_DEBUG: name = "DEBUG"; break;
1286 case DT_TEXTREL: name = "TEXTREL"; break;
1287 case DT_JMPREL: name = "JMPREL"; break;
1288 case DT_BIND_NOW: name = "BIND_NOW"; break;
1289 case DT_INIT_ARRAY: name = "INIT_ARRAY"; break;
1290 case DT_FINI_ARRAY: name = "FINI_ARRAY"; break;
1291 case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break;
1292 case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break;
1293 case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break;
1294 case DT_FLAGS: name = "FLAGS"; break;
1295 case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break;
1296 case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break;
1297 case DT_CHECKSUM: name = "CHECKSUM"; break;
1298 case DT_PLTPADSZ: name = "PLTPADSZ"; break;
1299 case DT_MOVEENT: name = "MOVEENT"; break;
1300 case DT_MOVESZ: name = "MOVESZ"; break;
1301 case DT_FEATURE: name = "FEATURE"; break;
1302 case DT_POSFLAG_1: name = "POSFLAG_1"; break;
1303 case DT_SYMINSZ: name = "SYMINSZ"; break;
1304 case DT_SYMINENT: name = "SYMINENT"; break;
1305 case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break;
1306 case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break;
1307 case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break;
1308 case DT_PLTPAD: name = "PLTPAD"; break;
1309 case DT_MOVETAB: name = "MOVETAB"; break;
1310 case DT_SYMINFO: name = "SYMINFO"; break;
1311 case DT_RELACOUNT: name = "RELACOUNT"; break;
1312 case DT_RELCOUNT: name = "RELCOUNT"; break;
1313 case DT_FLAGS_1: name = "FLAGS_1"; break;
1314 case DT_VERSYM: name = "VERSYM"; break;
1315 case DT_VERDEF: name = "VERDEF"; break;
1316 case DT_VERDEFNUM: name = "VERDEFNUM"; break;
1317 case DT_VERNEED: name = "VERNEED"; break;
1318 case DT_VERNEEDNUM: name = "VERNEEDNUM"; break;
1319 case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break;
1320 case DT_USED: name = "USED"; break;
1321 case DT_FILTER: name = "FILTER"; stringp = TRUE; break;
1322 case DT_GNU_HASH: name = "GNU_HASH"; break;
1325 fprintf (f, " %-20s ", name);
1329 bfd_fprintf_vma (abfd, f, dyn.d_un.d_val);
1334 unsigned int tagv = dyn.d_un.d_val;
1336 string = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
1339 fprintf (f, "%s", string);
1348 if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL)
1349 || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL))
1351 if (! _bfd_elf_slurp_version_tables (abfd, FALSE))
1355 if (elf_dynverdef (abfd) != 0)
1357 Elf_Internal_Verdef *t;
1359 fprintf (f, _("\nVersion definitions:\n"));
1360 for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef)
1362 fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx,
1363 t->vd_flags, t->vd_hash,
1364 t->vd_nodename ? t->vd_nodename : "<corrupt>");
1365 if (t->vd_auxptr != NULL && t->vd_auxptr->vda_nextptr != NULL)
1367 Elf_Internal_Verdaux *a;
1370 for (a = t->vd_auxptr->vda_nextptr;
1374 a->vda_nodename ? a->vda_nodename : "<corrupt>");
1380 if (elf_dynverref (abfd) != 0)
1382 Elf_Internal_Verneed *t;
1384 fprintf (f, _("\nVersion References:\n"));
1385 for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref)
1387 Elf_Internal_Vernaux *a;
1389 fprintf (f, _(" required from %s:\n"),
1390 t->vn_filename ? t->vn_filename : "<corrupt>");
1391 for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
1392 fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash,
1393 a->vna_flags, a->vna_other,
1394 a->vna_nodename ? a->vna_nodename : "<corrupt>");
1406 /* Display ELF-specific fields of a symbol. */
1409 bfd_elf_print_symbol (bfd *abfd,
1412 bfd_print_symbol_type how)
1414 FILE *file = (FILE *) filep;
1417 case bfd_print_symbol_name:
1418 fprintf (file, "%s", symbol->name);
1420 case bfd_print_symbol_more:
1421 fprintf (file, "elf ");
1422 bfd_fprintf_vma (abfd, file, symbol->value);
1423 fprintf (file, " %lx", (unsigned long) symbol->flags);
1425 case bfd_print_symbol_all:
1427 const char *section_name;
1428 const char *name = NULL;
1429 const struct elf_backend_data *bed;
1430 unsigned char st_other;
1433 section_name = symbol->section ? symbol->section->name : "(*none*)";
1435 bed = get_elf_backend_data (abfd);
1436 if (bed->elf_backend_print_symbol_all)
1437 name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol);
1441 name = symbol->name;
1442 bfd_print_symbol_vandf (abfd, file, symbol);
1445 fprintf (file, " %s\t", section_name);
1446 /* Print the "other" value for a symbol. For common symbols,
1447 we've already printed the size; now print the alignment.
1448 For other symbols, we have no specified alignment, and
1449 we've printed the address; now print the size. */
1450 if (symbol->section && bfd_is_com_section (symbol->section))
1451 val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value;
1453 val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size;
1454 bfd_fprintf_vma (abfd, file, val);
1456 /* If we have version information, print it. */
1457 if (elf_tdata (abfd)->dynversym_section != 0
1458 && (elf_tdata (abfd)->dynverdef_section != 0
1459 || elf_tdata (abfd)->dynverref_section != 0))
1461 unsigned int vernum;
1462 const char *version_string;
1464 vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION;
1467 version_string = "";
1468 else if (vernum == 1)
1469 version_string = "Base";
1470 else if (vernum <= elf_tdata (abfd)->cverdefs)
1472 elf_tdata (abfd)->verdef[vernum - 1].vd_nodename;
1475 Elf_Internal_Verneed *t;
1477 version_string = "";
1478 for (t = elf_tdata (abfd)->verref;
1482 Elf_Internal_Vernaux *a;
1484 for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
1486 if (a->vna_other == vernum)
1488 version_string = a->vna_nodename;
1495 if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0)
1496 fprintf (file, " %-11s", version_string);
1501 fprintf (file, " (%s)", version_string);
1502 for (i = 10 - strlen (version_string); i > 0; --i)
1507 /* If the st_other field is not zero, print it. */
1508 st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other;
1513 case STV_INTERNAL: fprintf (file, " .internal"); break;
1514 case STV_HIDDEN: fprintf (file, " .hidden"); break;
1515 case STV_PROTECTED: fprintf (file, " .protected"); break;
1517 /* Some other non-defined flags are also present, so print
1519 fprintf (file, " 0x%02x", (unsigned int) st_other);
1522 fprintf (file, " %s", name);
1528 /* Allocate an ELF string table--force the first byte to be zero. */
1530 struct bfd_strtab_hash *
1531 _bfd_elf_stringtab_init (void)
1533 struct bfd_strtab_hash *ret;
1535 ret = _bfd_stringtab_init ();
1540 loc = _bfd_stringtab_add (ret, "", TRUE, FALSE);
1541 BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1);
1542 if (loc == (bfd_size_type) -1)
1544 _bfd_stringtab_free (ret);
1551 /* ELF .o/exec file reading */
1553 /* Create a new bfd section from an ELF section header. */
1556 bfd_section_from_shdr (bfd *abfd, unsigned int shindex)
1558 Elf_Internal_Shdr *hdr;
1559 Elf_Internal_Ehdr *ehdr;
1560 const struct elf_backend_data *bed;
1563 if (shindex >= elf_numsections (abfd))
1566 hdr = elf_elfsections (abfd)[shindex];
1567 ehdr = elf_elfheader (abfd);
1568 name = bfd_elf_string_from_elf_section (abfd, ehdr->e_shstrndx,
1573 bed = get_elf_backend_data (abfd);
1574 switch (hdr->sh_type)
1577 /* Inactive section. Throw it away. */
1580 case SHT_PROGBITS: /* Normal section with contents. */
1581 case SHT_NOBITS: /* .bss section. */
1582 case SHT_HASH: /* .hash section. */
1583 case SHT_NOTE: /* .note section. */
1584 case SHT_INIT_ARRAY: /* .init_array section. */
1585 case SHT_FINI_ARRAY: /* .fini_array section. */
1586 case SHT_PREINIT_ARRAY: /* .preinit_array section. */
1587 case SHT_GNU_LIBLIST: /* .gnu.liblist section. */
1588 case SHT_GNU_HASH: /* .gnu.hash section. */
1589 return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
1591 case SHT_DYNAMIC: /* Dynamic linking information. */
1592 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1594 if (hdr->sh_link > elf_numsections (abfd))
1596 /* PR 10478: Accept Solaris binaries with a sh_link
1597 field set to SHN_BEFORE or SHN_AFTER. */
1598 switch (bfd_get_arch (abfd))
1601 case bfd_arch_sparc:
1602 if (hdr->sh_link == (SHN_LORESERVE & 0xffff) /* SHN_BEFORE */
1603 || hdr->sh_link == ((SHN_LORESERVE + 1) & 0xffff) /* SHN_AFTER */)
1605 /* Otherwise fall through. */
1610 else if (elf_elfsections (abfd)[hdr->sh_link] == NULL)
1612 else if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB)
1614 Elf_Internal_Shdr *dynsymhdr;
1616 /* The shared libraries distributed with hpux11 have a bogus
1617 sh_link field for the ".dynamic" section. Find the
1618 string table for the ".dynsym" section instead. */
1619 if (elf_dynsymtab (abfd) != 0)
1621 dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)];
1622 hdr->sh_link = dynsymhdr->sh_link;
1626 unsigned int i, num_sec;
1628 num_sec = elf_numsections (abfd);
1629 for (i = 1; i < num_sec; i++)
1631 dynsymhdr = elf_elfsections (abfd)[i];
1632 if (dynsymhdr->sh_type == SHT_DYNSYM)
1634 hdr->sh_link = dynsymhdr->sh_link;
1642 case SHT_SYMTAB: /* A symbol table */
1643 if (elf_onesymtab (abfd) == shindex)
1646 if (hdr->sh_entsize != bed->s->sizeof_sym)
1648 if (hdr->sh_info * hdr->sh_entsize > hdr->sh_size)
1650 BFD_ASSERT (elf_onesymtab (abfd) == 0);
1651 elf_onesymtab (abfd) = shindex;
1652 elf_tdata (abfd)->symtab_hdr = *hdr;
1653 elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr;
1654 abfd->flags |= HAS_SYMS;
1656 /* Sometimes a shared object will map in the symbol table. If
1657 SHF_ALLOC is set, and this is a shared object, then we also
1658 treat this section as a BFD section. We can not base the
1659 decision purely on SHF_ALLOC, because that flag is sometimes
1660 set in a relocatable object file, which would confuse the
1662 if ((hdr->sh_flags & SHF_ALLOC) != 0
1663 && (abfd->flags & DYNAMIC) != 0
1664 && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name,
1668 /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we
1669 can't read symbols without that section loaded as well. It
1670 is most likely specified by the next section header. */
1671 if (elf_elfsections (abfd)[elf_symtab_shndx (abfd)]->sh_link != shindex)
1673 unsigned int i, num_sec;
1675 num_sec = elf_numsections (abfd);
1676 for (i = shindex + 1; i < num_sec; i++)
1678 Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i];
1679 if (hdr2->sh_type == SHT_SYMTAB_SHNDX
1680 && hdr2->sh_link == shindex)
1684 for (i = 1; i < shindex; i++)
1686 Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i];
1687 if (hdr2->sh_type == SHT_SYMTAB_SHNDX
1688 && hdr2->sh_link == shindex)
1692 return bfd_section_from_shdr (abfd, i);
1696 case SHT_DYNSYM: /* A dynamic symbol table */
1697 if (elf_dynsymtab (abfd) == shindex)
1700 if (hdr->sh_entsize != bed->s->sizeof_sym)
1702 BFD_ASSERT (elf_dynsymtab (abfd) == 0);
1703 elf_dynsymtab (abfd) = shindex;
1704 elf_tdata (abfd)->dynsymtab_hdr = *hdr;
1705 elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr;
1706 abfd->flags |= HAS_SYMS;
1708 /* Besides being a symbol table, we also treat this as a regular
1709 section, so that objcopy can handle it. */
1710 return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
1712 case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */
1713 if (elf_symtab_shndx (abfd) == shindex)
1716 BFD_ASSERT (elf_symtab_shndx (abfd) == 0);
1717 elf_symtab_shndx (abfd) = shindex;
1718 elf_tdata (abfd)->symtab_shndx_hdr = *hdr;
1719 elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr;
1722 case SHT_STRTAB: /* A string table */
1723 if (hdr->bfd_section != NULL)
1725 if (ehdr->e_shstrndx == shindex)
1727 elf_tdata (abfd)->shstrtab_hdr = *hdr;
1728 elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr;
1731 if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex)
1734 elf_tdata (abfd)->strtab_hdr = *hdr;
1735 elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr;
1738 if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex)
1741 elf_tdata (abfd)->dynstrtab_hdr = *hdr;
1742 hdr = &elf_tdata (abfd)->dynstrtab_hdr;
1743 elf_elfsections (abfd)[shindex] = hdr;
1744 /* We also treat this as a regular section, so that objcopy
1746 return _bfd_elf_make_section_from_shdr (abfd, hdr, name,
1750 /* If the string table isn't one of the above, then treat it as a
1751 regular section. We need to scan all the headers to be sure,
1752 just in case this strtab section appeared before the above. */
1753 if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0)
1755 unsigned int i, num_sec;
1757 num_sec = elf_numsections (abfd);
1758 for (i = 1; i < num_sec; i++)
1760 Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i];
1761 if (hdr2->sh_link == shindex)
1763 /* Prevent endless recursion on broken objects. */
1766 if (! bfd_section_from_shdr (abfd, i))
1768 if (elf_onesymtab (abfd) == i)
1770 if (elf_dynsymtab (abfd) == i)
1771 goto dynsymtab_strtab;
1775 return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
1779 /* *These* do a lot of work -- but build no sections! */
1781 asection *target_sect;
1782 Elf_Internal_Shdr *hdr2, **p_hdr;
1783 unsigned int num_sec = elf_numsections (abfd);
1784 struct bfd_elf_section_data *esdt;
1788 != (bfd_size_type) (hdr->sh_type == SHT_REL
1789 ? bed->s->sizeof_rel : bed->s->sizeof_rela))
1792 /* Check for a bogus link to avoid crashing. */
1793 if (hdr->sh_link >= num_sec)
1795 ((*_bfd_error_handler)
1796 (_("%B: invalid link %lu for reloc section %s (index %u)"),
1797 abfd, hdr->sh_link, name, shindex));
1798 return _bfd_elf_make_section_from_shdr (abfd, hdr, name,
1802 /* For some incomprehensible reason Oracle distributes
1803 libraries for Solaris in which some of the objects have
1804 bogus sh_link fields. It would be nice if we could just
1805 reject them, but, unfortunately, some people need to use
1806 them. We scan through the section headers; if we find only
1807 one suitable symbol table, we clobber the sh_link to point
1808 to it. I hope this doesn't break anything.
1810 Don't do it on executable nor shared library. */
1811 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0
1812 && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB
1813 && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM)
1819 for (scan = 1; scan < num_sec; scan++)
1821 if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB
1822 || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM)
1833 hdr->sh_link = found;
1836 /* Get the symbol table. */
1837 if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB
1838 || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM)
1839 && ! bfd_section_from_shdr (abfd, hdr->sh_link))
1842 /* If this reloc section does not use the main symbol table we
1843 don't treat it as a reloc section. BFD can't adequately
1844 represent such a section, so at least for now, we don't
1845 try. We just present it as a normal section. We also
1846 can't use it as a reloc section if it points to the null
1847 section, an invalid section, another reloc section, or its
1848 sh_link points to the null section. */
1849 if (hdr->sh_link != elf_onesymtab (abfd)
1850 || hdr->sh_link == SHN_UNDEF
1851 || hdr->sh_info == SHN_UNDEF
1852 || hdr->sh_info >= num_sec
1853 || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_REL
1854 || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_RELA)
1855 return _bfd_elf_make_section_from_shdr (abfd, hdr, name,
1858 if (! bfd_section_from_shdr (abfd, hdr->sh_info))
1860 target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info);
1861 if (target_sect == NULL)
1864 esdt = elf_section_data (target_sect);
1865 if (hdr->sh_type == SHT_RELA)
1866 p_hdr = &esdt->rela.hdr;
1868 p_hdr = &esdt->rel.hdr;
1870 BFD_ASSERT (*p_hdr == NULL);
1871 amt = sizeof (*hdr2);
1872 hdr2 = (Elf_Internal_Shdr *) bfd_alloc (abfd, amt);
1877 elf_elfsections (abfd)[shindex] = hdr2;
1878 target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr);
1879 target_sect->flags |= SEC_RELOC;
1880 target_sect->relocation = NULL;
1881 target_sect->rel_filepos = hdr->sh_offset;
1882 /* In the section to which the relocations apply, mark whether
1883 its relocations are of the REL or RELA variety. */
1884 if (hdr->sh_size != 0)
1886 if (hdr->sh_type == SHT_RELA)
1887 target_sect->use_rela_p = 1;
1889 abfd->flags |= HAS_RELOC;
1893 case SHT_GNU_verdef:
1894 elf_dynverdef (abfd) = shindex;
1895 elf_tdata (abfd)->dynverdef_hdr = *hdr;
1896 return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
1898 case SHT_GNU_versym:
1899 if (hdr->sh_entsize != sizeof (Elf_External_Versym))
1901 elf_dynversym (abfd) = shindex;
1902 elf_tdata (abfd)->dynversym_hdr = *hdr;
1903 return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
1905 case SHT_GNU_verneed:
1906 elf_dynverref (abfd) = shindex;
1907 elf_tdata (abfd)->dynverref_hdr = *hdr;
1908 return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
1914 if (! IS_VALID_GROUP_SECTION_HEADER (hdr))
1916 if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1918 if (hdr->contents != NULL)
1920 Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents;
1921 unsigned int n_elt = hdr->sh_size / GRP_ENTRY_SIZE;
1924 if (idx->flags & GRP_COMDAT)
1925 hdr->bfd_section->flags
1926 |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
1928 /* We try to keep the same section order as it comes in. */
1930 while (--n_elt != 0)
1934 if (idx->shdr != NULL
1935 && (s = idx->shdr->bfd_section) != NULL
1936 && elf_next_in_group (s) != NULL)
1938 elf_next_in_group (hdr->bfd_section) = s;
1946 /* Possibly an attributes section. */
1947 if (hdr->sh_type == SHT_GNU_ATTRIBUTES
1948 || hdr->sh_type == bed->obj_attrs_section_type)
1950 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1952 _bfd_elf_parse_attributes (abfd, hdr);
1956 /* Check for any processor-specific section types. */
1957 if (bed->elf_backend_section_from_shdr (abfd, hdr, name, shindex))
1960 if (hdr->sh_type >= SHT_LOUSER && hdr->sh_type <= SHT_HIUSER)
1962 if ((hdr->sh_flags & SHF_ALLOC) != 0)
1963 /* FIXME: How to properly handle allocated section reserved
1964 for applications? */
1965 (*_bfd_error_handler)
1966 (_("%B: don't know how to handle allocated, application "
1967 "specific section `%s' [0x%8x]"),
1968 abfd, name, hdr->sh_type);
1970 /* Allow sections reserved for applications. */
1971 return _bfd_elf_make_section_from_shdr (abfd, hdr, name,
1974 else if (hdr->sh_type >= SHT_LOPROC
1975 && hdr->sh_type <= SHT_HIPROC)
1976 /* FIXME: We should handle this section. */
1977 (*_bfd_error_handler)
1978 (_("%B: don't know how to handle processor specific section "
1980 abfd, name, hdr->sh_type);
1981 else if (hdr->sh_type >= SHT_LOOS && hdr->sh_type <= SHT_HIOS)
1983 /* Unrecognised OS-specific sections. */
1984 if ((hdr->sh_flags & SHF_OS_NONCONFORMING) != 0)
1985 /* SHF_OS_NONCONFORMING indicates that special knowledge is
1986 required to correctly process the section and the file should
1987 be rejected with an error message. */
1988 (*_bfd_error_handler)
1989 (_("%B: don't know how to handle OS specific section "
1991 abfd, name, hdr->sh_type);
1993 /* Otherwise it should be processed. */
1994 return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
1997 /* FIXME: We should handle this section. */
1998 (*_bfd_error_handler)
1999 (_("%B: don't know how to handle section `%s' [0x%8x]"),
2000 abfd, name, hdr->sh_type);
2008 /* Return the local symbol specified by ABFD, R_SYMNDX. */
2011 bfd_sym_from_r_symndx (struct sym_cache *cache,
2013 unsigned long r_symndx)
2015 unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE;
2017 if (cache->abfd != abfd || cache->indx[ent] != r_symndx)
2019 Elf_Internal_Shdr *symtab_hdr;
2020 unsigned char esym[sizeof (Elf64_External_Sym)];
2021 Elf_External_Sym_Shndx eshndx;
2023 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2024 if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx,
2025 &cache->sym[ent], esym, &eshndx) == NULL)
2028 if (cache->abfd != abfd)
2030 memset (cache->indx, -1, sizeof (cache->indx));
2033 cache->indx[ent] = r_symndx;
2036 return &cache->sym[ent];
2039 /* Given an ELF section number, retrieve the corresponding BFD
2043 bfd_section_from_elf_index (bfd *abfd, unsigned int sec_index)
2045 if (sec_index >= elf_numsections (abfd))
2047 return elf_elfsections (abfd)[sec_index]->bfd_section;
2050 static const struct bfd_elf_special_section special_sections_b[] =
2052 { STRING_COMMA_LEN (".bss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2053 { NULL, 0, 0, 0, 0 }
2056 static const struct bfd_elf_special_section special_sections_c[] =
2058 { STRING_COMMA_LEN (".comment"), 0, SHT_PROGBITS, 0 },
2059 { NULL, 0, 0, 0, 0 }
2062 static const struct bfd_elf_special_section special_sections_d[] =
2064 { STRING_COMMA_LEN (".data"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2065 { STRING_COMMA_LEN (".data1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2066 { STRING_COMMA_LEN (".debug"), 0, SHT_PROGBITS, 0 },
2067 { STRING_COMMA_LEN (".debug_line"), 0, SHT_PROGBITS, 0 },
2068 { STRING_COMMA_LEN (".debug_info"), 0, SHT_PROGBITS, 0 },
2069 { STRING_COMMA_LEN (".debug_abbrev"), 0, SHT_PROGBITS, 0 },
2070 { STRING_COMMA_LEN (".debug_aranges"), 0, SHT_PROGBITS, 0 },
2071 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, SHF_ALLOC },
2072 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, SHF_ALLOC },
2073 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, SHF_ALLOC },
2074 { NULL, 0, 0, 0, 0 }
2077 static const struct bfd_elf_special_section special_sections_f[] =
2079 { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
2080 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE },
2081 { NULL, 0, 0, 0, 0 }
2084 static const struct bfd_elf_special_section special_sections_g[] =
2086 { STRING_COMMA_LEN (".gnu.linkonce.b"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2087 { STRING_COMMA_LEN (".gnu.lto_"), -1, SHT_PROGBITS, SHF_EXCLUDE },
2088 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2089 { STRING_COMMA_LEN (".gnu.version"), 0, SHT_GNU_versym, 0 },
2090 { STRING_COMMA_LEN (".gnu.version_d"), 0, SHT_GNU_verdef, 0 },
2091 { STRING_COMMA_LEN (".gnu.version_r"), 0, SHT_GNU_verneed, 0 },
2092 { STRING_COMMA_LEN (".gnu.liblist"), 0, SHT_GNU_LIBLIST, SHF_ALLOC },
2093 { STRING_COMMA_LEN (".gnu.conflict"), 0, SHT_RELA, SHF_ALLOC },
2094 { STRING_COMMA_LEN (".gnu.hash"), 0, SHT_GNU_HASH, SHF_ALLOC },
2095 { NULL, 0, 0, 0, 0 }
2098 static const struct bfd_elf_special_section special_sections_h[] =
2100 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, SHF_ALLOC },
2101 { NULL, 0, 0, 0, 0 }
2104 static const struct bfd_elf_special_section special_sections_i[] =
2106 { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
2107 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE },
2108 { STRING_COMMA_LEN (".interp"), 0, SHT_PROGBITS, 0 },
2109 { NULL, 0, 0, 0, 0 }
2112 static const struct bfd_elf_special_section special_sections_l[] =
2114 { STRING_COMMA_LEN (".line"), 0, SHT_PROGBITS, 0 },
2115 { NULL, 0, 0, 0, 0 }
2118 static const struct bfd_elf_special_section special_sections_n[] =
2120 { STRING_COMMA_LEN (".note.GNU-stack"), 0, SHT_PROGBITS, 0 },
2121 { STRING_COMMA_LEN (".note"), -1, SHT_NOTE, 0 },
2122 { NULL, 0, 0, 0, 0 }
2125 static const struct bfd_elf_special_section special_sections_p[] =
2127 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE },
2128 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
2129 { NULL, 0, 0, 0, 0 }
2132 static const struct bfd_elf_special_section special_sections_r[] =
2134 { STRING_COMMA_LEN (".rodata"), -2, SHT_PROGBITS, SHF_ALLOC },
2135 { STRING_COMMA_LEN (".rodata1"), 0, SHT_PROGBITS, SHF_ALLOC },
2136 { STRING_COMMA_LEN (".rela"), -1, SHT_RELA, 0 },
2137 { STRING_COMMA_LEN (".rel"), -1, SHT_REL, 0 },
2138 { NULL, 0, 0, 0, 0 }
2141 static const struct bfd_elf_special_section special_sections_s[] =
2143 { STRING_COMMA_LEN (".shstrtab"), 0, SHT_STRTAB, 0 },
2144 { STRING_COMMA_LEN (".strtab"), 0, SHT_STRTAB, 0 },
2145 { STRING_COMMA_LEN (".symtab"), 0, SHT_SYMTAB, 0 },
2146 /* See struct bfd_elf_special_section declaration for the semantics of
2147 this special case where .prefix_length != strlen (.prefix). */
2148 { ".stabstr", 5, 3, SHT_STRTAB, 0 },
2149 { NULL, 0, 0, 0, 0 }
2152 static const struct bfd_elf_special_section special_sections_t[] =
2154 { STRING_COMMA_LEN (".text"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
2155 { STRING_COMMA_LEN (".tbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS },
2156 { STRING_COMMA_LEN (".tdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS },
2157 { NULL, 0, 0, 0, 0 }
2160 static const struct bfd_elf_special_section special_sections_z[] =
2162 { STRING_COMMA_LEN (".zdebug_line"), 0, SHT_PROGBITS, 0 },
2163 { STRING_COMMA_LEN (".zdebug_info"), 0, SHT_PROGBITS, 0 },
2164 { STRING_COMMA_LEN (".zdebug_abbrev"), 0, SHT_PROGBITS, 0 },
2165 { STRING_COMMA_LEN (".zdebug_aranges"), 0, SHT_PROGBITS, 0 },
2166 { NULL, 0, 0, 0, 0 }
2169 static const struct bfd_elf_special_section * const special_sections[] =
2171 special_sections_b, /* 'b' */
2172 special_sections_c, /* 'c' */
2173 special_sections_d, /* 'd' */
2175 special_sections_f, /* 'f' */
2176 special_sections_g, /* 'g' */
2177 special_sections_h, /* 'h' */
2178 special_sections_i, /* 'i' */
2181 special_sections_l, /* 'l' */
2183 special_sections_n, /* 'n' */
2185 special_sections_p, /* 'p' */
2187 special_sections_r, /* 'r' */
2188 special_sections_s, /* 's' */
2189 special_sections_t, /* 't' */
2195 special_sections_z /* 'z' */
2198 const struct bfd_elf_special_section *
2199 _bfd_elf_get_special_section (const char *name,
2200 const struct bfd_elf_special_section *spec,
2206 len = strlen (name);
2208 for (i = 0; spec[i].prefix != NULL; i++)
2211 int prefix_len = spec[i].prefix_length;
2213 if (len < prefix_len)
2215 if (memcmp (name, spec[i].prefix, prefix_len) != 0)
2218 suffix_len = spec[i].suffix_length;
2219 if (suffix_len <= 0)
2221 if (name[prefix_len] != 0)
2223 if (suffix_len == 0)
2225 if (name[prefix_len] != '.'
2226 && (suffix_len == -2
2227 || (rela && spec[i].type == SHT_REL)))
2233 if (len < prefix_len + suffix_len)
2235 if (memcmp (name + len - suffix_len,
2236 spec[i].prefix + prefix_len,
2246 const struct bfd_elf_special_section *
2247 _bfd_elf_get_sec_type_attr (bfd *abfd, asection *sec)
2250 const struct bfd_elf_special_section *spec;
2251 const struct elf_backend_data *bed;
2253 /* See if this is one of the special sections. */
2254 if (sec->name == NULL)
2257 bed = get_elf_backend_data (abfd);
2258 spec = bed->special_sections;
2261 spec = _bfd_elf_get_special_section (sec->name,
2262 bed->special_sections,
2268 if (sec->name[0] != '.')
2271 i = sec->name[1] - 'b';
2272 if (i < 0 || i > 'z' - 'b')
2275 spec = special_sections[i];
2280 return _bfd_elf_get_special_section (sec->name, spec, sec->use_rela_p);
2284 _bfd_elf_new_section_hook (bfd *abfd, asection *sec)
2286 struct bfd_elf_section_data *sdata;
2287 const struct elf_backend_data *bed;
2288 const struct bfd_elf_special_section *ssect;
2290 sdata = (struct bfd_elf_section_data *) sec->used_by_bfd;
2293 sdata = (struct bfd_elf_section_data *) bfd_zalloc (abfd,
2297 sec->used_by_bfd = sdata;
2300 /* Indicate whether or not this section should use RELA relocations. */
2301 bed = get_elf_backend_data (abfd);
2302 sec->use_rela_p = bed->default_use_rela_p;
2304 /* When we read a file, we don't need to set ELF section type and
2305 flags. They will be overridden in _bfd_elf_make_section_from_shdr
2306 anyway. We will set ELF section type and flags for all linker
2307 created sections. If user specifies BFD section flags, we will
2308 set ELF section type and flags based on BFD section flags in
2309 elf_fake_sections. Special handling for .init_array/.fini_array
2310 output sections since they may contain .ctors/.dtors input
2311 sections. We don't want _bfd_elf_init_private_section_data to
2312 copy ELF section type from .ctors/.dtors input sections. */
2313 if (abfd->direction != read_direction
2314 || (sec->flags & SEC_LINKER_CREATED) != 0)
2316 ssect = (*bed->get_sec_type_attr) (abfd, sec);
2319 || (sec->flags & SEC_LINKER_CREATED) != 0
2320 || ssect->type == SHT_INIT_ARRAY
2321 || ssect->type == SHT_FINI_ARRAY))
2323 elf_section_type (sec) = ssect->type;
2324 elf_section_flags (sec) = ssect->attr;
2328 return _bfd_generic_new_section_hook (abfd, sec);
2331 /* Create a new bfd section from an ELF program header.
2333 Since program segments have no names, we generate a synthetic name
2334 of the form segment<NUM>, where NUM is generally the index in the
2335 program header table. For segments that are split (see below) we
2336 generate the names segment<NUM>a and segment<NUM>b.
2338 Note that some program segments may have a file size that is different than
2339 (less than) the memory size. All this means is that at execution the
2340 system must allocate the amount of memory specified by the memory size,
2341 but only initialize it with the first "file size" bytes read from the
2342 file. This would occur for example, with program segments consisting
2343 of combined data+bss.
2345 To handle the above situation, this routine generates TWO bfd sections
2346 for the single program segment. The first has the length specified by
2347 the file size of the segment, and the second has the length specified
2348 by the difference between the two sizes. In effect, the segment is split
2349 into its initialized and uninitialized parts.
2354 _bfd_elf_make_section_from_phdr (bfd *abfd,
2355 Elf_Internal_Phdr *hdr,
2357 const char *type_name)
2365 split = ((hdr->p_memsz > 0)
2366 && (hdr->p_filesz > 0)
2367 && (hdr->p_memsz > hdr->p_filesz));
2369 if (hdr->p_filesz > 0)
2371 sprintf (namebuf, "%s%d%s", type_name, hdr_index, split ? "a" : "");
2372 len = strlen (namebuf) + 1;
2373 name = (char *) bfd_alloc (abfd, len);
2376 memcpy (name, namebuf, len);
2377 newsect = bfd_make_section (abfd, name);
2378 if (newsect == NULL)
2380 newsect->vma = hdr->p_vaddr;
2381 newsect->lma = hdr->p_paddr;
2382 newsect->size = hdr->p_filesz;
2383 newsect->filepos = hdr->p_offset;
2384 newsect->flags |= SEC_HAS_CONTENTS;
2385 newsect->alignment_power = bfd_log2 (hdr->p_align);
2386 if (hdr->p_type == PT_LOAD)
2388 newsect->flags |= SEC_ALLOC;
2389 newsect->flags |= SEC_LOAD;
2390 if (hdr->p_flags & PF_X)
2392 /* FIXME: all we known is that it has execute PERMISSION,
2394 newsect->flags |= SEC_CODE;
2397 if (!(hdr->p_flags & PF_W))
2399 newsect->flags |= SEC_READONLY;
2403 if (hdr->p_memsz > hdr->p_filesz)
2407 sprintf (namebuf, "%s%d%s", type_name, hdr_index, split ? "b" : "");
2408 len = strlen (namebuf) + 1;
2409 name = (char *) bfd_alloc (abfd, len);
2412 memcpy (name, namebuf, len);
2413 newsect = bfd_make_section (abfd, name);
2414 if (newsect == NULL)
2416 newsect->vma = hdr->p_vaddr + hdr->p_filesz;
2417 newsect->lma = hdr->p_paddr + hdr->p_filesz;
2418 newsect->size = hdr->p_memsz - hdr->p_filesz;
2419 newsect->filepos = hdr->p_offset + hdr->p_filesz;
2420 align = newsect->vma & -newsect->vma;
2421 if (align == 0 || align > hdr->p_align)
2422 align = hdr->p_align;
2423 newsect->alignment_power = bfd_log2 (align);
2424 if (hdr->p_type == PT_LOAD)
2426 /* Hack for gdb. Segments that have not been modified do
2427 not have their contents written to a core file, on the
2428 assumption that a debugger can find the contents in the
2429 executable. We flag this case by setting the fake
2430 section size to zero. Note that "real" bss sections will
2431 always have their contents dumped to the core file. */
2432 if (bfd_get_format (abfd) == bfd_core)
2434 newsect->flags |= SEC_ALLOC;
2435 if (hdr->p_flags & PF_X)
2436 newsect->flags |= SEC_CODE;
2438 if (!(hdr->p_flags & PF_W))
2439 newsect->flags |= SEC_READONLY;
2446 bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int hdr_index)
2448 const struct elf_backend_data *bed;
2450 switch (hdr->p_type)
2453 return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "null");
2456 return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "load");
2459 return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "dynamic");
2462 return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "interp");
2465 if (! _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "note"))
2467 if (! elf_read_notes (abfd, hdr->p_offset, hdr->p_filesz))
2472 return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "shlib");
2475 return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "phdr");
2477 case PT_GNU_EH_FRAME:
2478 return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index,
2482 return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "stack");
2485 return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "relro");
2488 /* Check for any processor-specific program segment types. */
2489 bed = get_elf_backend_data (abfd);
2490 return bed->elf_backend_section_from_phdr (abfd, hdr, hdr_index, "proc");
2494 /* Return the REL_HDR for SEC, assuming there is only a single one, either
2498 _bfd_elf_single_rel_hdr (asection *sec)
2500 if (elf_section_data (sec)->rel.hdr)
2502 BFD_ASSERT (elf_section_data (sec)->rela.hdr == NULL);
2503 return elf_section_data (sec)->rel.hdr;
2506 return elf_section_data (sec)->rela.hdr;
2509 /* Allocate and initialize a section-header for a new reloc section,
2510 containing relocations against ASECT. It is stored in RELDATA. If
2511 USE_RELA_P is TRUE, we use RELA relocations; otherwise, we use REL
2515 _bfd_elf_init_reloc_shdr (bfd *abfd,
2516 struct bfd_elf_section_reloc_data *reldata,
2518 bfd_boolean use_rela_p)
2520 Elf_Internal_Shdr *rel_hdr;
2522 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2525 amt = sizeof (Elf_Internal_Shdr);
2526 BFD_ASSERT (reldata->hdr == NULL);
2527 rel_hdr = bfd_zalloc (abfd, amt);
2528 reldata->hdr = rel_hdr;
2530 amt = sizeof ".rela" + strlen (asect->name);
2531 name = (char *) bfd_alloc (abfd, amt);
2534 sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name);
2536 (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name,
2538 if (rel_hdr->sh_name == (unsigned int) -1)
2540 rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL;
2541 rel_hdr->sh_entsize = (use_rela_p
2542 ? bed->s->sizeof_rela
2543 : bed->s->sizeof_rel);
2544 rel_hdr->sh_addralign = (bfd_vma) 1 << bed->s->log_file_align;
2545 rel_hdr->sh_flags = 0;
2546 rel_hdr->sh_addr = 0;
2547 rel_hdr->sh_size = 0;
2548 rel_hdr->sh_offset = 0;
2553 /* Return the default section type based on the passed in section flags. */
2556 bfd_elf_get_default_section_type (flagword flags)
2558 if ((flags & SEC_ALLOC) != 0
2559 && (flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
2561 return SHT_PROGBITS;
2564 struct fake_section_arg
2566 struct bfd_link_info *link_info;
2570 /* Set up an ELF internal section header for a section. */
2573 elf_fake_sections (bfd *abfd, asection *asect, void *fsarg)
2575 struct fake_section_arg *arg = (struct fake_section_arg *)fsarg;
2576 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2577 struct bfd_elf_section_data *esd = elf_section_data (asect);
2578 Elf_Internal_Shdr *this_hdr;
2579 unsigned int sh_type;
2583 /* We already failed; just get out of the bfd_map_over_sections
2588 this_hdr = &esd->this_hdr;
2590 this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd),
2591 asect->name, FALSE);
2592 if (this_hdr->sh_name == (unsigned int) -1)
2598 /* Don't clear sh_flags. Assembler may set additional bits. */
2600 if ((asect->flags & SEC_ALLOC) != 0
2601 || asect->user_set_vma)
2602 this_hdr->sh_addr = asect->vma;
2604 this_hdr->sh_addr = 0;
2606 this_hdr->sh_offset = 0;
2607 this_hdr->sh_size = asect->size;
2608 this_hdr->sh_link = 0;
2609 this_hdr->sh_addralign = (bfd_vma) 1 << asect->alignment_power;
2610 /* The sh_entsize and sh_info fields may have been set already by
2611 copy_private_section_data. */
2613 this_hdr->bfd_section = asect;
2614 this_hdr->contents = NULL;
2616 /* If the section type is unspecified, we set it based on
2618 if ((asect->flags & SEC_GROUP) != 0)
2619 sh_type = SHT_GROUP;
2621 sh_type = bfd_elf_get_default_section_type (asect->flags);
2623 if (this_hdr->sh_type == SHT_NULL)
2624 this_hdr->sh_type = sh_type;
2625 else if (this_hdr->sh_type == SHT_NOBITS
2626 && sh_type == SHT_PROGBITS
2627 && (asect->flags & SEC_ALLOC) != 0)
2629 /* Warn if we are changing a NOBITS section to PROGBITS, but
2630 allow the link to proceed. This can happen when users link
2631 non-bss input sections to bss output sections, or emit data
2632 to a bss output section via a linker script. */
2633 (*_bfd_error_handler)
2634 (_("warning: section `%A' type changed to PROGBITS"), asect);
2635 this_hdr->sh_type = sh_type;
2638 switch (this_hdr->sh_type)
2644 case SHT_INIT_ARRAY:
2645 case SHT_FINI_ARRAY:
2646 case SHT_PREINIT_ARRAY:
2653 this_hdr->sh_entsize = bed->s->sizeof_hash_entry;
2657 this_hdr->sh_entsize = bed->s->sizeof_sym;
2661 this_hdr->sh_entsize = bed->s->sizeof_dyn;
2665 if (get_elf_backend_data (abfd)->may_use_rela_p)
2666 this_hdr->sh_entsize = bed->s->sizeof_rela;
2670 if (get_elf_backend_data (abfd)->may_use_rel_p)
2671 this_hdr->sh_entsize = bed->s->sizeof_rel;
2674 case SHT_GNU_versym:
2675 this_hdr->sh_entsize = sizeof (Elf_External_Versym);
2678 case SHT_GNU_verdef:
2679 this_hdr->sh_entsize = 0;
2680 /* objcopy or strip will copy over sh_info, but may not set
2681 cverdefs. The linker will set cverdefs, but sh_info will be
2683 if (this_hdr->sh_info == 0)
2684 this_hdr->sh_info = elf_tdata (abfd)->cverdefs;
2686 BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0
2687 || this_hdr->sh_info == elf_tdata (abfd)->cverdefs);
2690 case SHT_GNU_verneed:
2691 this_hdr->sh_entsize = 0;
2692 /* objcopy or strip will copy over sh_info, but may not set
2693 cverrefs. The linker will set cverrefs, but sh_info will be
2695 if (this_hdr->sh_info == 0)
2696 this_hdr->sh_info = elf_tdata (abfd)->cverrefs;
2698 BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0
2699 || this_hdr->sh_info == elf_tdata (abfd)->cverrefs);
2703 this_hdr->sh_entsize = GRP_ENTRY_SIZE;
2707 this_hdr->sh_entsize = bed->s->arch_size == 64 ? 0 : 4;
2711 if ((asect->flags & SEC_ALLOC) != 0)
2712 this_hdr->sh_flags |= SHF_ALLOC;
2713 if ((asect->flags & SEC_READONLY) == 0)
2714 this_hdr->sh_flags |= SHF_WRITE;
2715 if ((asect->flags & SEC_CODE) != 0)
2716 this_hdr->sh_flags |= SHF_EXECINSTR;
2717 if ((asect->flags & SEC_MERGE) != 0)
2719 this_hdr->sh_flags |= SHF_MERGE;
2720 this_hdr->sh_entsize = asect->entsize;
2721 if ((asect->flags & SEC_STRINGS) != 0)
2722 this_hdr->sh_flags |= SHF_STRINGS;
2724 if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL)
2725 this_hdr->sh_flags |= SHF_GROUP;
2726 if ((asect->flags & SEC_THREAD_LOCAL) != 0)
2728 this_hdr->sh_flags |= SHF_TLS;
2729 if (asect->size == 0
2730 && (asect->flags & SEC_HAS_CONTENTS) == 0)
2732 struct bfd_link_order *o = asect->map_tail.link_order;
2734 this_hdr->sh_size = 0;
2737 this_hdr->sh_size = o->offset + o->size;
2738 if (this_hdr->sh_size != 0)
2739 this_hdr->sh_type = SHT_NOBITS;
2743 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
2744 this_hdr->sh_flags |= SHF_EXCLUDE;
2746 /* If the section has relocs, set up a section header for the
2747 SHT_REL[A] section. If two relocation sections are required for
2748 this section, it is up to the processor-specific back-end to
2749 create the other. */
2750 if ((asect->flags & SEC_RELOC) != 0)
2752 /* When doing a relocatable link, create both REL and RELA sections if
2755 /* Do the normal setup if we wouldn't create any sections here. */
2756 && esd->rel.count + esd->rela.count > 0
2757 && (arg->link_info->relocatable || arg->link_info->emitrelocations))
2759 if (esd->rel.count && esd->rel.hdr == NULL
2760 && !_bfd_elf_init_reloc_shdr (abfd, &esd->rel, asect, FALSE))
2765 if (esd->rela.count && esd->rela.hdr == NULL
2766 && !_bfd_elf_init_reloc_shdr (abfd, &esd->rela, asect, TRUE))
2772 else if (!_bfd_elf_init_reloc_shdr (abfd,
2774 ? &esd->rela : &esd->rel),
2780 /* Check for processor-specific section types. */
2781 sh_type = this_hdr->sh_type;
2782 if (bed->elf_backend_fake_sections
2783 && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect))
2786 if (sh_type == SHT_NOBITS && asect->size != 0)
2788 /* Don't change the header type from NOBITS if we are being
2789 called for objcopy --only-keep-debug. */
2790 this_hdr->sh_type = sh_type;
2794 /* Fill in the contents of a SHT_GROUP section. Called from
2795 _bfd_elf_compute_section_file_positions for gas, objcopy, and
2796 when ELF targets use the generic linker, ld. Called for ld -r
2797 from bfd_elf_final_link. */
2800 bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg)
2802 bfd_boolean *failedptr = (bfd_boolean *) failedptrarg;
2803 asection *elt, *first;
2807 /* Ignore linker created group section. See elfNN_ia64_object_p in
2809 if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP)
2813 if (elf_section_data (sec)->this_hdr.sh_info == 0)
2815 unsigned long symindx = 0;
2817 /* elf_group_id will have been set up by objcopy and the
2819 if (elf_group_id (sec) != NULL)
2820 symindx = elf_group_id (sec)->udata.i;
2824 /* If called from the assembler, swap_out_syms will have set up
2825 elf_section_syms. */
2826 BFD_ASSERT (elf_section_syms (abfd) != NULL);
2827 symindx = elf_section_syms (abfd)[sec->index]->udata.i;
2829 elf_section_data (sec)->this_hdr.sh_info = symindx;
2831 else if (elf_section_data (sec)->this_hdr.sh_info == (unsigned int) -2)
2833 /* The ELF backend linker sets sh_info to -2 when the group
2834 signature symbol is global, and thus the index can't be
2835 set until all local symbols are output. */
2836 asection *igroup = elf_sec_group (elf_next_in_group (sec));
2837 struct bfd_elf_section_data *sec_data = elf_section_data (igroup);
2838 unsigned long symndx = sec_data->this_hdr.sh_info;
2839 unsigned long extsymoff = 0;
2840 struct elf_link_hash_entry *h;
2842 if (!elf_bad_symtab (igroup->owner))
2844 Elf_Internal_Shdr *symtab_hdr;
2846 symtab_hdr = &elf_tdata (igroup->owner)->symtab_hdr;
2847 extsymoff = symtab_hdr->sh_info;
2849 h = elf_sym_hashes (igroup->owner)[symndx - extsymoff];
2850 while (h->root.type == bfd_link_hash_indirect
2851 || h->root.type == bfd_link_hash_warning)
2852 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2854 elf_section_data (sec)->this_hdr.sh_info = h->indx;
2857 /* The contents won't be allocated for "ld -r" or objcopy. */
2859 if (sec->contents == NULL)
2862 sec->contents = (unsigned char *) bfd_alloc (abfd, sec->size);
2864 /* Arrange for the section to be written out. */
2865 elf_section_data (sec)->this_hdr.contents = sec->contents;
2866 if (sec->contents == NULL)
2873 loc = sec->contents + sec->size;
2875 /* Get the pointer to the first section in the group that gas
2876 squirreled away here. objcopy arranges for this to be set to the
2877 start of the input section group. */
2878 first = elt = elf_next_in_group (sec);
2880 /* First element is a flag word. Rest of section is elf section
2881 indices for all the sections of the group. Write them backwards
2882 just to keep the group in the same order as given in .section
2883 directives, not that it matters. */
2890 s = s->output_section;
2892 && !bfd_is_abs_section (s))
2894 unsigned int idx = elf_section_data (s)->this_idx;
2897 H_PUT_32 (abfd, idx, loc);
2899 elt = elf_next_in_group (elt);
2904 if ((loc -= 4) != sec->contents)
2907 H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc);
2910 /* Assign all ELF section numbers. The dummy first section is handled here
2911 too. The link/info pointers for the standard section types are filled
2912 in here too, while we're at it. */
2915 assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info)
2917 struct elf_obj_tdata *t = elf_tdata (abfd);
2919 unsigned int section_number, secn;
2920 Elf_Internal_Shdr **i_shdrp;
2921 struct bfd_elf_section_data *d;
2922 bfd_boolean need_symtab;
2926 _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd));
2928 /* SHT_GROUP sections are in relocatable files only. */
2929 if (link_info == NULL || link_info->relocatable)
2931 /* Put SHT_GROUP sections first. */
2932 for (sec = abfd->sections; sec != NULL; sec = sec->next)
2934 d = elf_section_data (sec);
2936 if (d->this_hdr.sh_type == SHT_GROUP)
2938 if (sec->flags & SEC_LINKER_CREATED)
2940 /* Remove the linker created SHT_GROUP sections. */
2941 bfd_section_list_remove (abfd, sec);
2942 abfd->section_count--;
2945 d->this_idx = section_number++;
2950 for (sec = abfd->sections; sec; sec = sec->next)
2952 d = elf_section_data (sec);
2954 if (d->this_hdr.sh_type != SHT_GROUP)
2955 d->this_idx = section_number++;
2956 _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name);
2959 d->rel.idx = section_number++;
2960 _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel.hdr->sh_name);
2967 d->rela.idx = section_number++;
2968 _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rela.hdr->sh_name);
2974 t->shstrtab_section = section_number++;
2975 _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name);
2976 elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section;
2978 need_symtab = (bfd_get_symcount (abfd) > 0
2979 || (link_info == NULL
2980 && ((abfd->flags & (EXEC_P | DYNAMIC | HAS_RELOC))
2984 t->symtab_section = section_number++;
2985 _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name);
2986 if (section_number > ((SHN_LORESERVE - 2) & 0xFFFF))
2988 t->symtab_shndx_section = section_number++;
2989 t->symtab_shndx_hdr.sh_name
2990 = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd),
2991 ".symtab_shndx", FALSE);
2992 if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1)
2995 t->strtab_section = section_number++;
2996 _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name);
2999 _bfd_elf_strtab_finalize (elf_shstrtab (abfd));
3000 t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd));
3002 elf_numsections (abfd) = section_number;
3003 elf_elfheader (abfd)->e_shnum = section_number;
3005 /* Set up the list of section header pointers, in agreement with the
3007 i_shdrp = (Elf_Internal_Shdr **) bfd_zalloc2 (abfd, section_number,
3008 sizeof (Elf_Internal_Shdr *));
3009 if (i_shdrp == NULL)
3012 i_shdrp[0] = (Elf_Internal_Shdr *) bfd_zalloc (abfd,
3013 sizeof (Elf_Internal_Shdr));
3014 if (i_shdrp[0] == NULL)
3016 bfd_release (abfd, i_shdrp);
3020 elf_elfsections (abfd) = i_shdrp;
3022 i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr;
3025 i_shdrp[t->symtab_section] = &t->symtab_hdr;
3026 if (elf_numsections (abfd) > (SHN_LORESERVE & 0xFFFF))
3028 i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr;
3029 t->symtab_shndx_hdr.sh_link = t->symtab_section;
3031 i_shdrp[t->strtab_section] = &t->strtab_hdr;
3032 t->symtab_hdr.sh_link = t->strtab_section;
3035 for (sec = abfd->sections; sec; sec = sec->next)
3040 d = elf_section_data (sec);
3042 i_shdrp[d->this_idx] = &d->this_hdr;
3043 if (d->rel.idx != 0)
3044 i_shdrp[d->rel.idx] = d->rel.hdr;
3045 if (d->rela.idx != 0)
3046 i_shdrp[d->rela.idx] = d->rela.hdr;
3048 /* Fill in the sh_link and sh_info fields while we're at it. */
3050 /* sh_link of a reloc section is the section index of the symbol
3051 table. sh_info is the section index of the section to which
3052 the relocation entries apply. */
3053 if (d->rel.idx != 0)
3055 d->rel.hdr->sh_link = t->symtab_section;
3056 d->rel.hdr->sh_info = d->this_idx;
3058 if (d->rela.idx != 0)
3060 d->rela.hdr->sh_link = t->symtab_section;
3061 d->rela.hdr->sh_info = d->this_idx;
3064 /* We need to set up sh_link for SHF_LINK_ORDER. */
3065 if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0)
3067 s = elf_linked_to_section (sec);
3070 /* elf_linked_to_section points to the input section. */
3071 if (link_info != NULL)
3073 /* Check discarded linkonce section. */
3074 if (elf_discarded_section (s))
3077 (*_bfd_error_handler)
3078 (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"),
3079 abfd, d->this_hdr.bfd_section,
3081 /* Point to the kept section if it has the same
3082 size as the discarded one. */
3083 kept = _bfd_elf_check_kept_section (s, link_info);
3086 bfd_set_error (bfd_error_bad_value);
3092 s = s->output_section;
3093 BFD_ASSERT (s != NULL);
3097 /* Handle objcopy. */
3098 if (s->output_section == NULL)
3100 (*_bfd_error_handler)
3101 (_("%B: sh_link of section `%A' points to removed section `%A' of `%B'"),
3102 abfd, d->this_hdr.bfd_section, s, s->owner);
3103 bfd_set_error (bfd_error_bad_value);
3106 s = s->output_section;
3108 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
3113 The Intel C compiler generates SHT_IA_64_UNWIND with
3114 SHF_LINK_ORDER. But it doesn't set the sh_link or
3115 sh_info fields. Hence we could get the situation
3117 const struct elf_backend_data *bed
3118 = get_elf_backend_data (abfd);
3119 if (bed->link_order_error_handler)
3120 bed->link_order_error_handler
3121 (_("%B: warning: sh_link not set for section `%A'"),
3126 switch (d->this_hdr.sh_type)
3130 /* A reloc section which we are treating as a normal BFD
3131 section. sh_link is the section index of the symbol
3132 table. sh_info is the section index of the section to
3133 which the relocation entries apply. We assume that an
3134 allocated reloc section uses the dynamic symbol table.
3135 FIXME: How can we be sure? */
3136 s = bfd_get_section_by_name (abfd, ".dynsym");
3138 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
3140 /* We look up the section the relocs apply to by name. */
3142 if (d->this_hdr.sh_type == SHT_REL)
3146 s = bfd_get_section_by_name (abfd, name);
3148 d->this_hdr.sh_info = elf_section_data (s)->this_idx;
3152 /* We assume that a section named .stab*str is a stabs
3153 string section. We look for a section with the same name
3154 but without the trailing ``str'', and set its sh_link
3155 field to point to this section. */
3156 if (CONST_STRNEQ (sec->name, ".stab")
3157 && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0)
3162 len = strlen (sec->name);
3163 alc = (char *) bfd_malloc (len - 2);
3166 memcpy (alc, sec->name, len - 3);
3167 alc[len - 3] = '\0';
3168 s = bfd_get_section_by_name (abfd, alc);
3172 elf_section_data (s)->this_hdr.sh_link = d->this_idx;
3174 /* This is a .stab section. */
3175 if (elf_section_data (s)->this_hdr.sh_entsize == 0)
3176 elf_section_data (s)->this_hdr.sh_entsize
3177 = 4 + 2 * bfd_get_arch_size (abfd) / 8;
3184 case SHT_GNU_verneed:
3185 case SHT_GNU_verdef:
3186 /* sh_link is the section header index of the string table
3187 used for the dynamic entries, or the symbol table, or the
3189 s = bfd_get_section_by_name (abfd, ".dynstr");
3191 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
3194 case SHT_GNU_LIBLIST:
3195 /* sh_link is the section header index of the prelink library
3196 list used for the dynamic entries, or the symbol table, or
3197 the version strings. */
3198 s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC)
3199 ? ".dynstr" : ".gnu.libstr");
3201 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
3206 case SHT_GNU_versym:
3207 /* sh_link is the section header index of the symbol table
3208 this hash table or version table is for. */
3209 s = bfd_get_section_by_name (abfd, ".dynsym");
3211 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
3215 d->this_hdr.sh_link = t->symtab_section;
3219 for (secn = 1; secn < section_number; ++secn)
3220 if (i_shdrp[secn] == NULL)
3221 i_shdrp[secn] = i_shdrp[0];
3223 i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd),
3224 i_shdrp[secn]->sh_name);
3228 /* Map symbol from it's internal number to the external number, moving
3229 all local symbols to be at the head of the list. */
3232 sym_is_global (bfd *abfd, asymbol *sym)
3234 /* If the backend has a special mapping, use it. */
3235 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3236 if (bed->elf_backend_sym_is_global)
3237 return (*bed->elf_backend_sym_is_global) (abfd, sym);
3239 return ((sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_GNU_UNIQUE)) != 0
3240 || bfd_is_und_section (bfd_get_section (sym))
3241 || bfd_is_com_section (bfd_get_section (sym)));
3244 /* Don't output section symbols for sections that are not going to be
3248 ignore_section_sym (bfd *abfd, asymbol *sym)
3250 return ((sym->flags & BSF_SECTION_SYM) != 0
3251 && !(sym->section->owner == abfd
3252 || (sym->section->output_section->owner == abfd
3253 && sym->section->output_offset == 0)));
3257 elf_map_symbols (bfd *abfd)
3259 unsigned int symcount = bfd_get_symcount (abfd);
3260 asymbol **syms = bfd_get_outsymbols (abfd);
3261 asymbol **sect_syms;
3262 unsigned int num_locals = 0;
3263 unsigned int num_globals = 0;
3264 unsigned int num_locals2 = 0;
3265 unsigned int num_globals2 = 0;
3272 fprintf (stderr, "elf_map_symbols\n");
3276 for (asect = abfd->sections; asect; asect = asect->next)
3278 if (max_index < asect->index)
3279 max_index = asect->index;
3283 sect_syms = (asymbol **) bfd_zalloc2 (abfd, max_index, sizeof (asymbol *));
3284 if (sect_syms == NULL)
3286 elf_section_syms (abfd) = sect_syms;
3287 elf_num_section_syms (abfd) = max_index;
3289 /* Init sect_syms entries for any section symbols we have already
3290 decided to output. */
3291 for (idx = 0; idx < symcount; idx++)
3293 asymbol *sym = syms[idx];
3295 if ((sym->flags & BSF_SECTION_SYM) != 0
3297 && !ignore_section_sym (abfd, sym))
3299 asection *sec = sym->section;
3301 if (sec->owner != abfd)
3302 sec = sec->output_section;
3304 sect_syms[sec->index] = syms[idx];
3308 /* Classify all of the symbols. */
3309 for (idx = 0; idx < symcount; idx++)
3311 if (ignore_section_sym (abfd, syms[idx]))
3313 if (!sym_is_global (abfd, syms[idx]))
3319 /* We will be adding a section symbol for each normal BFD section. Most
3320 sections will already have a section symbol in outsymbols, but
3321 eg. SHT_GROUP sections will not, and we need the section symbol mapped
3322 at least in that case. */
3323 for (asect = abfd->sections; asect; asect = asect->next)
3325 if (sect_syms[asect->index] == NULL)
3327 if (!sym_is_global (abfd, asect->symbol))
3334 /* Now sort the symbols so the local symbols are first. */
3335 new_syms = (asymbol **) bfd_alloc2 (abfd, num_locals + num_globals,
3336 sizeof (asymbol *));
3338 if (new_syms == NULL)
3341 for (idx = 0; idx < symcount; idx++)
3343 asymbol *sym = syms[idx];
3346 if (ignore_section_sym (abfd, sym))
3348 if (!sym_is_global (abfd, sym))
3351 i = num_locals + num_globals2++;
3353 sym->udata.i = i + 1;
3355 for (asect = abfd->sections; asect; asect = asect->next)
3357 if (sect_syms[asect->index] == NULL)
3359 asymbol *sym = asect->symbol;
3362 sect_syms[asect->index] = sym;
3363 if (!sym_is_global (abfd, sym))
3366 i = num_locals + num_globals2++;
3368 sym->udata.i = i + 1;
3372 bfd_set_symtab (abfd, new_syms, num_locals + num_globals);
3374 elf_num_locals (abfd) = num_locals;
3375 elf_num_globals (abfd) = num_globals;
3379 /* Align to the maximum file alignment that could be required for any
3380 ELF data structure. */
3382 static inline file_ptr
3383 align_file_position (file_ptr off, int align)
3385 return (off + align - 1) & ~(align - 1);
3388 /* Assign a file position to a section, optionally aligning to the
3389 required section alignment. */
3392 _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp,
3396 if (align && i_shdrp->sh_addralign > 1)
3397 offset = BFD_ALIGN (offset, i_shdrp->sh_addralign);
3398 i_shdrp->sh_offset = offset;
3399 if (i_shdrp->bfd_section != NULL)
3400 i_shdrp->bfd_section->filepos = offset;
3401 if (i_shdrp->sh_type != SHT_NOBITS)
3402 offset += i_shdrp->sh_size;
3406 /* Compute the file positions we are going to put the sections at, and
3407 otherwise prepare to begin writing out the ELF file. If LINK_INFO
3408 is not NULL, this is being called by the ELF backend linker. */
3411 _bfd_elf_compute_section_file_positions (bfd *abfd,
3412 struct bfd_link_info *link_info)
3414 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3415 struct fake_section_arg fsargs;
3417 struct bfd_strtab_hash *strtab = NULL;
3418 Elf_Internal_Shdr *shstrtab_hdr;
3419 bfd_boolean need_symtab;
3421 if (abfd->output_has_begun)
3424 /* Do any elf backend specific processing first. */
3425 if (bed->elf_backend_begin_write_processing)
3426 (*bed->elf_backend_begin_write_processing) (abfd, link_info);
3428 if (! prep_headers (abfd))
3431 /* Post process the headers if necessary. */
3432 if (bed->elf_backend_post_process_headers)
3433 (*bed->elf_backend_post_process_headers) (abfd, link_info);
3435 fsargs.failed = FALSE;
3436 fsargs.link_info = link_info;
3437 bfd_map_over_sections (abfd, elf_fake_sections, &fsargs);
3441 if (!assign_section_numbers (abfd, link_info))
3444 /* The backend linker builds symbol table information itself. */
3445 need_symtab = (link_info == NULL
3446 && (bfd_get_symcount (abfd) > 0
3447 || ((abfd->flags & (EXEC_P | DYNAMIC | HAS_RELOC))
3451 /* Non-zero if doing a relocatable link. */
3452 int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC));
3454 if (! swap_out_syms (abfd, &strtab, relocatable_p))
3459 if (link_info == NULL)
3461 bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed);
3466 shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr;
3467 /* sh_name was set in prep_headers. */
3468 shstrtab_hdr->sh_type = SHT_STRTAB;
3469 shstrtab_hdr->sh_flags = 0;
3470 shstrtab_hdr->sh_addr = 0;
3471 shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd));
3472 shstrtab_hdr->sh_entsize = 0;
3473 shstrtab_hdr->sh_link = 0;
3474 shstrtab_hdr->sh_info = 0;
3475 /* sh_offset is set in assign_file_positions_except_relocs. */
3476 shstrtab_hdr->sh_addralign = 1;
3478 if (!assign_file_positions_except_relocs (abfd, link_info))
3484 Elf_Internal_Shdr *hdr;
3486 off = elf_tdata (abfd)->next_file_pos;
3488 hdr = &elf_tdata (abfd)->symtab_hdr;
3489 off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
3491 hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
3492 if (hdr->sh_size != 0)
3493 off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
3495 hdr = &elf_tdata (abfd)->strtab_hdr;
3496 off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
3498 elf_tdata (abfd)->next_file_pos = off;
3500 /* Now that we know where the .strtab section goes, write it
3502 if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
3503 || ! _bfd_stringtab_emit (abfd, strtab))
3505 _bfd_stringtab_free (strtab);
3508 abfd->output_has_begun = TRUE;
3513 /* Make an initial estimate of the size of the program header. If we
3514 get the number wrong here, we'll redo section placement. */
3516 static bfd_size_type
3517 get_program_header_size (bfd *abfd, struct bfd_link_info *info)
3521 const struct elf_backend_data *bed;
3523 /* Assume we will need exactly two PT_LOAD segments: one for text
3524 and one for data. */
3527 s = bfd_get_section_by_name (abfd, ".interp");
3528 if (s != NULL && (s->flags & SEC_LOAD) != 0)
3530 /* If we have a loadable interpreter section, we need a
3531 PT_INTERP segment. In this case, assume we also need a
3532 PT_PHDR segment, although that may not be true for all
3537 if (bfd_get_section_by_name (abfd, ".dynamic") != NULL)
3539 /* We need a PT_DYNAMIC segment. */
3543 if (info != NULL && info->relro)
3545 /* We need a PT_GNU_RELRO segment. */
3549 if (elf_tdata (abfd)->eh_frame_hdr)
3551 /* We need a PT_GNU_EH_FRAME segment. */
3555 if (elf_tdata (abfd)->stack_flags)
3557 /* We need a PT_GNU_STACK segment. */
3561 for (s = abfd->sections; s != NULL; s = s->next)
3563 if ((s->flags & SEC_LOAD) != 0
3564 && CONST_STRNEQ (s->name, ".note"))
3566 /* We need a PT_NOTE segment. */
3568 /* Try to create just one PT_NOTE segment
3569 for all adjacent loadable .note* sections.
3570 gABI requires that within a PT_NOTE segment
3571 (and also inside of each SHT_NOTE section)
3572 each note is padded to a multiple of 4 size,
3573 so we check whether the sections are correctly
3575 if (s->alignment_power == 2)
3576 while (s->next != NULL
3577 && s->next->alignment_power == 2
3578 && (s->next->flags & SEC_LOAD) != 0
3579 && CONST_STRNEQ (s->next->name, ".note"))
3584 for (s = abfd->sections; s != NULL; s = s->next)
3586 if (s->flags & SEC_THREAD_LOCAL)
3588 /* We need a PT_TLS segment. */
3594 /* Let the backend count up any program headers it might need. */
3595 bed = get_elf_backend_data (abfd);
3596 if (bed->elf_backend_additional_program_headers)
3600 a = (*bed->elf_backend_additional_program_headers) (abfd, info);
3606 return segs * bed->s->sizeof_phdr;
3609 /* Find the segment that contains the output_section of section. */
3612 _bfd_elf_find_segment_containing_section (bfd * abfd, asection * section)
3614 struct elf_segment_map *m;
3615 Elf_Internal_Phdr *p;
3617 for (m = elf_tdata (abfd)->segment_map,
3618 p = elf_tdata (abfd)->phdr;
3624 for (i = m->count - 1; i >= 0; i--)
3625 if (m->sections[i] == section)
3632 /* Create a mapping from a set of sections to a program segment. */
3634 static struct elf_segment_map *
3635 make_mapping (bfd *abfd,
3636 asection **sections,
3641 struct elf_segment_map *m;
3646 amt = sizeof (struct elf_segment_map);
3647 amt += (to - from - 1) * sizeof (asection *);
3648 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
3652 m->p_type = PT_LOAD;
3653 for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++)
3654 m->sections[i - from] = *hdrpp;
3655 m->count = to - from;
3657 if (from == 0 && phdr)
3659 /* Include the headers in the first PT_LOAD segment. */
3660 m->includes_filehdr = 1;
3661 m->includes_phdrs = 1;
3667 /* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL
3670 struct elf_segment_map *
3671 _bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec)
3673 struct elf_segment_map *m;
3675 m = (struct elf_segment_map *) bfd_zalloc (abfd,
3676 sizeof (struct elf_segment_map));
3680 m->p_type = PT_DYNAMIC;
3682 m->sections[0] = dynsec;
3687 /* Possibly add or remove segments from the segment map. */
3690 elf_modify_segment_map (bfd *abfd,
3691 struct bfd_link_info *info,
3692 bfd_boolean remove_empty_load)
3694 struct elf_segment_map **m;
3695 const struct elf_backend_data *bed;
3697 /* The placement algorithm assumes that non allocated sections are
3698 not in PT_LOAD segments. We ensure this here by removing such
3699 sections from the segment map. We also remove excluded
3700 sections. Finally, any PT_LOAD segment without sections is
3702 m = &elf_tdata (abfd)->segment_map;
3705 unsigned int i, new_count;
3707 for (new_count = 0, i = 0; i < (*m)->count; i++)
3709 if (((*m)->sections[i]->flags & SEC_EXCLUDE) == 0
3710 && (((*m)->sections[i]->flags & SEC_ALLOC) != 0
3711 || (*m)->p_type != PT_LOAD))
3713 (*m)->sections[new_count] = (*m)->sections[i];
3717 (*m)->count = new_count;
3719 if (remove_empty_load && (*m)->p_type == PT_LOAD && (*m)->count == 0)
3725 bed = get_elf_backend_data (abfd);
3726 if (bed->elf_backend_modify_segment_map != NULL)
3728 if (!(*bed->elf_backend_modify_segment_map) (abfd, info))
3735 /* Set up a mapping from BFD sections to program segments. */
3738 _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info)
3741 struct elf_segment_map *m;
3742 asection **sections = NULL;
3743 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3744 bfd_boolean no_user_phdrs;
3746 no_user_phdrs = elf_tdata (abfd)->segment_map == NULL;
3747 if (no_user_phdrs && bfd_count_sections (abfd) != 0)
3751 struct elf_segment_map *mfirst;
3752 struct elf_segment_map **pm;
3755 unsigned int phdr_index;
3756 bfd_vma maxpagesize;
3758 bfd_boolean phdr_in_segment = TRUE;
3759 bfd_boolean writable;
3761 asection *first_tls = NULL;
3762 asection *dynsec, *eh_frame_hdr;
3764 bfd_vma addr_mask, wrap_to = 0;
3766 /* Select the allocated sections, and sort them. */
3768 sections = (asection **) bfd_malloc2 (bfd_count_sections (abfd),
3769 sizeof (asection *));
3770 if (sections == NULL)
3773 /* Calculate top address, avoiding undefined behaviour of shift
3774 left operator when shift count is equal to size of type
3776 addr_mask = ((bfd_vma) 1 << (bfd_arch_bits_per_address (abfd) - 1)) - 1;
3777 addr_mask = (addr_mask << 1) + 1;
3780 for (s = abfd->sections; s != NULL; s = s->next)
3782 if ((s->flags & SEC_ALLOC) != 0)
3786 /* A wrapping section potentially clashes with header. */
3787 if (((s->lma + s->size) & addr_mask) < (s->lma & addr_mask))
3788 wrap_to = (s->lma + s->size) & addr_mask;
3791 BFD_ASSERT (i <= bfd_count_sections (abfd));
3794 qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections);
3796 /* Build the mapping. */
3801 /* If we have a .interp section, then create a PT_PHDR segment for
3802 the program headers and a PT_INTERP segment for the .interp
3804 s = bfd_get_section_by_name (abfd, ".interp");
3805 if (s != NULL && (s->flags & SEC_LOAD) != 0)
3807 amt = sizeof (struct elf_segment_map);
3808 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
3812 m->p_type = PT_PHDR;
3813 /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */
3814 m->p_flags = PF_R | PF_X;
3815 m->p_flags_valid = 1;
3816 m->includes_phdrs = 1;
3821 amt = sizeof (struct elf_segment_map);
3822 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
3826 m->p_type = PT_INTERP;
3834 /* Look through the sections. We put sections in the same program
3835 segment when the start of the second section can be placed within
3836 a few bytes of the end of the first section. */
3840 maxpagesize = bed->maxpagesize;
3842 dynsec = bfd_get_section_by_name (abfd, ".dynamic");
3844 && (dynsec->flags & SEC_LOAD) == 0)
3847 /* Deal with -Ttext or something similar such that the first section
3848 is not adjacent to the program headers. This is an
3849 approximation, since at this point we don't know exactly how many
3850 program headers we will need. */
3853 bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size;
3855 if (phdr_size == (bfd_size_type) -1)
3856 phdr_size = get_program_header_size (abfd, info);
3857 if ((abfd->flags & D_PAGED) == 0
3858 || (sections[0]->lma & addr_mask) < phdr_size
3859 || ((sections[0]->lma & addr_mask) % maxpagesize
3860 < phdr_size % maxpagesize)
3861 || (sections[0]->lma & addr_mask & -maxpagesize) < wrap_to)
3862 phdr_in_segment = FALSE;
3865 for (i = 0, hdrpp = sections; i < count; i++, hdrpp++)
3868 bfd_boolean new_segment;
3872 /* See if this section and the last one will fit in the same
3875 if (last_hdr == NULL)
3877 /* If we don't have a segment yet, then we don't need a new
3878 one (we build the last one after this loop). */
3879 new_segment = FALSE;
3881 else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma)
3883 /* If this section has a different relation between the
3884 virtual address and the load address, then we need a new
3888 else if (hdr->lma < last_hdr->lma + last_size
3889 || last_hdr->lma + last_size < last_hdr->lma)
3891 /* If this section has a load address that makes it overlap
3892 the previous section, then we need a new segment. */
3895 /* In the next test we have to be careful when last_hdr->lma is close
3896 to the end of the address space. If the aligned address wraps
3897 around to the start of the address space, then there are no more
3898 pages left in memory and it is OK to assume that the current
3899 section can be included in the current segment. */
3900 else if ((BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) + maxpagesize
3902 && (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) + maxpagesize
3905 /* If putting this section in this segment would force us to
3906 skip a page in the segment, then we need a new segment. */
3909 else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0
3910 && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0)
3912 /* We don't want to put a loadable section after a
3913 nonloadable section in the same segment.
3914 Consider .tbss sections as loadable for this purpose. */
3917 else if ((abfd->flags & D_PAGED) == 0)
3919 /* If the file is not demand paged, which means that we
3920 don't require the sections to be correctly aligned in the
3921 file, then there is no other reason for a new segment. */
3922 new_segment = FALSE;
3925 && (hdr->flags & SEC_READONLY) == 0
3926 && (((last_hdr->lma + last_size - 1) & -maxpagesize)
3927 != (hdr->lma & -maxpagesize)))
3929 /* We don't want to put a writable section in a read only
3930 segment, unless they are on the same page in memory
3931 anyhow. We already know that the last section does not
3932 bring us past the current section on the page, so the
3933 only case in which the new section is not on the same
3934 page as the previous section is when the previous section
3935 ends precisely on a page boundary. */
3940 /* Otherwise, we can use the same segment. */
3941 new_segment = FALSE;
3944 /* Allow interested parties a chance to override our decision. */
3945 if (last_hdr != NULL
3947 && info->callbacks->override_segment_assignment != NULL)
3949 = info->callbacks->override_segment_assignment (info, abfd, hdr,
3955 if ((hdr->flags & SEC_READONLY) == 0)
3958 /* .tbss sections effectively have zero size. */
3959 if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD))
3960 != SEC_THREAD_LOCAL)
3961 last_size = hdr->size;
3967 /* We need a new program segment. We must create a new program
3968 header holding all the sections from phdr_index until hdr. */
3970 m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment);
3977 if ((hdr->flags & SEC_READONLY) == 0)
3983 /* .tbss sections effectively have zero size. */
3984 if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL)
3985 last_size = hdr->size;
3989 phdr_in_segment = FALSE;
3992 /* Create a final PT_LOAD program segment, but not if it's just
3994 if (last_hdr != NULL
3995 && (i - phdr_index != 1
3996 || ((last_hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD))
3997 != SEC_THREAD_LOCAL)))
3999 m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment);
4007 /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */
4010 m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
4017 /* For each batch of consecutive loadable .note sections,
4018 add a PT_NOTE segment. We don't use bfd_get_section_by_name,
4019 because if we link together nonloadable .note sections and
4020 loadable .note sections, we will generate two .note sections
4021 in the output file. FIXME: Using names for section types is
4023 for (s = abfd->sections; s != NULL; s = s->next)
4025 if ((s->flags & SEC_LOAD) != 0
4026 && CONST_STRNEQ (s->name, ".note"))
4031 amt = sizeof (struct elf_segment_map);
4032 if (s->alignment_power == 2)
4033 for (s2 = s; s2->next != NULL; s2 = s2->next)
4035 if (s2->next->alignment_power == 2
4036 && (s2->next->flags & SEC_LOAD) != 0
4037 && CONST_STRNEQ (s2->next->name, ".note")
4038 && align_power (s2->lma + s2->size, 2)
4044 amt += (count - 1) * sizeof (asection *);
4045 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
4049 m->p_type = PT_NOTE;
4053 m->sections[m->count - count--] = s;
4054 BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0);
4057 m->sections[m->count - 1] = s;
4058 BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0);
4062 if (s->flags & SEC_THREAD_LOCAL)
4070 /* If there are any SHF_TLS output sections, add PT_TLS segment. */
4073 amt = sizeof (struct elf_segment_map);
4074 amt += (tls_count - 1) * sizeof (asection *);
4075 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
4080 m->count = tls_count;
4081 /* Mandated PF_R. */
4083 m->p_flags_valid = 1;
4084 for (i = 0; i < (unsigned int) tls_count; ++i)
4086 BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL);
4087 m->sections[i] = first_tls;
4088 first_tls = first_tls->next;
4095 /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME
4097 eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr;
4098 if (eh_frame_hdr != NULL
4099 && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0)
4101 amt = sizeof (struct elf_segment_map);
4102 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
4106 m->p_type = PT_GNU_EH_FRAME;
4108 m->sections[0] = eh_frame_hdr->output_section;
4114 if (elf_tdata (abfd)->stack_flags)
4116 amt = sizeof (struct elf_segment_map);
4117 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
4121 m->p_type = PT_GNU_STACK;
4122 m->p_flags = elf_tdata (abfd)->stack_flags;
4123 m->p_flags_valid = 1;
4129 if (info != NULL && info->relro)
4131 for (m = mfirst; m != NULL; m = m->next)
4133 if (m->p_type == PT_LOAD)
4135 asection *last = m->sections[m->count - 1];
4136 bfd_vma vaddr = m->sections[0]->vma;
4137 bfd_vma filesz = last->vma - vaddr + last->size;
4139 if (vaddr < info->relro_end
4140 && vaddr >= info->relro_start
4141 && (vaddr + filesz) >= info->relro_end)
4146 /* Make a PT_GNU_RELRO segment only when it isn't empty. */
4149 amt = sizeof (struct elf_segment_map);
4150 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
4154 m->p_type = PT_GNU_RELRO;
4156 m->p_flags_valid = 1;
4164 elf_tdata (abfd)->segment_map = mfirst;
4167 if (!elf_modify_segment_map (abfd, info, no_user_phdrs))
4170 for (count = 0, m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
4172 elf_tdata (abfd)->program_header_size = count * bed->s->sizeof_phdr;
4177 if (sections != NULL)
4182 /* Sort sections by address. */
4185 elf_sort_sections (const void *arg1, const void *arg2)
4187 const asection *sec1 = *(const asection **) arg1;
4188 const asection *sec2 = *(const asection **) arg2;
4189 bfd_size_type size1, size2;
4191 /* Sort by LMA first, since this is the address used to
4192 place the section into a segment. */
4193 if (sec1->lma < sec2->lma)
4195 else if (sec1->lma > sec2->lma)
4198 /* Then sort by VMA. Normally the LMA and the VMA will be
4199 the same, and this will do nothing. */
4200 if (sec1->vma < sec2->vma)
4202 else if (sec1->vma > sec2->vma)
4205 /* Put !SEC_LOAD sections after SEC_LOAD ones. */
4207 #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0)
4213 /* If the indicies are the same, do not return 0
4214 here, but continue to try the next comparison. */
4215 if (sec1->target_index - sec2->target_index != 0)
4216 return sec1->target_index - sec2->target_index;
4221 else if (TOEND (sec2))
4226 /* Sort by size, to put zero sized sections
4227 before others at the same address. */
4229 size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0;
4230 size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0;
4237 return sec1->target_index - sec2->target_index;
4240 /* Ian Lance Taylor writes:
4242 We shouldn't be using % with a negative signed number. That's just
4243 not good. We have to make sure either that the number is not
4244 negative, or that the number has an unsigned type. When the types
4245 are all the same size they wind up as unsigned. When file_ptr is a
4246 larger signed type, the arithmetic winds up as signed long long,
4249 What we're trying to say here is something like ``increase OFF by
4250 the least amount that will cause it to be equal to the VMA modulo
4252 /* In other words, something like:
4254 vma_offset = m->sections[0]->vma % bed->maxpagesize;
4255 off_offset = off % bed->maxpagesize;
4256 if (vma_offset < off_offset)
4257 adjustment = vma_offset + bed->maxpagesize - off_offset;
4259 adjustment = vma_offset - off_offset;
4261 which can can be collapsed into the expression below. */
4264 vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize)
4266 return ((vma - off) % maxpagesize);
4270 print_segment_map (const struct elf_segment_map *m)
4273 const char *pt = get_segment_type (m->p_type);
4278 if (m->p_type >= PT_LOPROC && m->p_type <= PT_HIPROC)
4279 sprintf (buf, "LOPROC+%7.7x",
4280 (unsigned int) (m->p_type - PT_LOPROC));
4281 else if (m->p_type >= PT_LOOS && m->p_type <= PT_HIOS)
4282 sprintf (buf, "LOOS+%7.7x",
4283 (unsigned int) (m->p_type - PT_LOOS));
4285 snprintf (buf, sizeof (buf), "%8.8x",
4286 (unsigned int) m->p_type);
4290 fprintf (stderr, "%s:", pt);
4291 for (j = 0; j < m->count; j++)
4292 fprintf (stderr, " %s", m->sections [j]->name);
4298 write_zeros (bfd *abfd, file_ptr pos, bfd_size_type len)
4303 if (bfd_seek (abfd, pos, SEEK_SET) != 0)
4305 buf = bfd_zmalloc (len);
4308 ret = bfd_bwrite (buf, len, abfd) == len;
4313 /* Assign file positions to the sections based on the mapping from
4314 sections to segments. This function also sets up some fields in
4318 assign_file_positions_for_load_sections (bfd *abfd,
4319 struct bfd_link_info *link_info)
4321 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
4322 struct elf_segment_map *m;
4323 Elf_Internal_Phdr *phdrs;
4324 Elf_Internal_Phdr *p;
4326 bfd_size_type maxpagesize;
4329 bfd_vma header_pad = 0;
4331 if (link_info == NULL
4332 && !_bfd_elf_map_sections_to_segments (abfd, link_info))
4336 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
4340 header_pad = m->header_size;
4345 elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr;
4346 elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr;
4350 /* PR binutils/12467. */
4351 elf_elfheader (abfd)->e_phoff = 0;
4352 elf_elfheader (abfd)->e_phentsize = 0;
4355 elf_elfheader (abfd)->e_phnum = alloc;
4357 if (elf_tdata (abfd)->program_header_size == (bfd_size_type) -1)
4358 elf_tdata (abfd)->program_header_size = alloc * bed->s->sizeof_phdr;
4360 BFD_ASSERT (elf_tdata (abfd)->program_header_size
4361 >= alloc * bed->s->sizeof_phdr);
4365 elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr;
4369 /* We're writing the size in elf_tdata (abfd)->program_header_size,
4370 see assign_file_positions_except_relocs, so make sure we have
4371 that amount allocated, with trailing space cleared.
4372 The variable alloc contains the computed need, while elf_tdata
4373 (abfd)->program_header_size contains the size used for the
4375 See ld/emultempl/elf-generic.em:gld${EMULATION_NAME}_map_segments
4376 where the layout is forced to according to a larger size in the
4377 last iterations for the testcase ld-elf/header. */
4378 BFD_ASSERT (elf_tdata (abfd)->program_header_size % bed->s->sizeof_phdr
4380 phdrs = (Elf_Internal_Phdr *)
4382 (elf_tdata (abfd)->program_header_size / bed->s->sizeof_phdr),
4383 sizeof (Elf_Internal_Phdr));
4384 elf_tdata (abfd)->phdr = phdrs;
4389 if ((abfd->flags & D_PAGED) != 0)
4390 maxpagesize = bed->maxpagesize;
4392 off = bed->s->sizeof_ehdr;
4393 off += alloc * bed->s->sizeof_phdr;
4394 if (header_pad < (bfd_vma) off)
4400 for (m = elf_tdata (abfd)->segment_map, p = phdrs, j = 0;
4402 m = m->next, p++, j++)
4406 bfd_boolean no_contents;
4408 /* If elf_segment_map is not from map_sections_to_segments, the
4409 sections may not be correctly ordered. NOTE: sorting should
4410 not be done to the PT_NOTE section of a corefile, which may
4411 contain several pseudo-sections artificially created by bfd.
4412 Sorting these pseudo-sections breaks things badly. */
4414 && !(elf_elfheader (abfd)->e_type == ET_CORE
4415 && m->p_type == PT_NOTE))
4416 qsort (m->sections, (size_t) m->count, sizeof (asection *),
4419 /* An ELF segment (described by Elf_Internal_Phdr) may contain a
4420 number of sections with contents contributing to both p_filesz
4421 and p_memsz, followed by a number of sections with no contents
4422 that just contribute to p_memsz. In this loop, OFF tracks next
4423 available file offset for PT_LOAD and PT_NOTE segments. */
4424 p->p_type = m->p_type;
4425 p->p_flags = m->p_flags;
4430 p->p_vaddr = m->sections[0]->vma - m->p_vaddr_offset;
4432 if (m->p_paddr_valid)
4433 p->p_paddr = m->p_paddr;
4434 else if (m->count == 0)
4437 p->p_paddr = m->sections[0]->lma - m->p_vaddr_offset;
4439 if (p->p_type == PT_LOAD
4440 && (abfd->flags & D_PAGED) != 0)
4442 /* p_align in demand paged PT_LOAD segments effectively stores
4443 the maximum page size. When copying an executable with
4444 objcopy, we set m->p_align from the input file. Use this
4445 value for maxpagesize rather than bed->maxpagesize, which
4446 may be different. Note that we use maxpagesize for PT_TLS
4447 segment alignment later in this function, so we are relying
4448 on at least one PT_LOAD segment appearing before a PT_TLS
4450 if (m->p_align_valid)
4451 maxpagesize = m->p_align;
4453 p->p_align = maxpagesize;
4455 else if (m->p_align_valid)
4456 p->p_align = m->p_align;
4457 else if (m->count == 0)
4458 p->p_align = 1 << bed->s->log_file_align;
4462 no_contents = FALSE;
4464 if (p->p_type == PT_LOAD
4467 bfd_size_type align;
4468 unsigned int align_power = 0;
4470 if (m->p_align_valid)
4474 for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
4476 unsigned int secalign;
4478 secalign = bfd_get_section_alignment (abfd, *secpp);
4479 if (secalign > align_power)
4480 align_power = secalign;
4482 align = (bfd_size_type) 1 << align_power;
4483 if (align < maxpagesize)
4484 align = maxpagesize;
4487 for (i = 0; i < m->count; i++)
4488 if ((m->sections[i]->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
4489 /* If we aren't making room for this section, then
4490 it must be SHT_NOBITS regardless of what we've
4491 set via struct bfd_elf_special_section. */
4492 elf_section_type (m->sections[i]) = SHT_NOBITS;
4494 /* Find out whether this segment contains any loadable
4497 for (i = 0; i < m->count; i++)
4498 if (elf_section_type (m->sections[i]) != SHT_NOBITS)
4500 no_contents = FALSE;
4504 off_adjust = vma_page_aligned_bias (p->p_vaddr, off, align);
4508 /* We shouldn't need to align the segment on disk since
4509 the segment doesn't need file space, but the gABI
4510 arguably requires the alignment and glibc ld.so
4511 checks it. So to comply with the alignment
4512 requirement but not waste file space, we adjust
4513 p_offset for just this segment. (OFF_ADJUST is
4514 subtracted from OFF later.) This may put p_offset
4515 past the end of file, but that shouldn't matter. */
4520 /* Make sure the .dynamic section is the first section in the
4521 PT_DYNAMIC segment. */
4522 else if (p->p_type == PT_DYNAMIC
4524 && strcmp (m->sections[0]->name, ".dynamic") != 0)
4527 (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"),
4529 bfd_set_error (bfd_error_bad_value);
4532 /* Set the note section type to SHT_NOTE. */
4533 else if (p->p_type == PT_NOTE)
4534 for (i = 0; i < m->count; i++)
4535 elf_section_type (m->sections[i]) = SHT_NOTE;
4541 if (m->includes_filehdr)
4543 if (!m->p_flags_valid)
4545 p->p_filesz = bed->s->sizeof_ehdr;
4546 p->p_memsz = bed->s->sizeof_ehdr;
4549 BFD_ASSERT (p->p_type == PT_LOAD);
4551 if (p->p_vaddr < (bfd_vma) off)
4553 (*_bfd_error_handler)
4554 (_("%B: Not enough room for program headers, try linking with -N"),
4556 bfd_set_error (bfd_error_bad_value);
4561 if (!m->p_paddr_valid)
4566 if (m->includes_phdrs)
4568 if (!m->p_flags_valid)
4571 if (!m->includes_filehdr)
4573 p->p_offset = bed->s->sizeof_ehdr;
4577 BFD_ASSERT (p->p_type == PT_LOAD);
4578 p->p_vaddr -= off - p->p_offset;
4579 if (!m->p_paddr_valid)
4580 p->p_paddr -= off - p->p_offset;
4584 p->p_filesz += alloc * bed->s->sizeof_phdr;
4585 p->p_memsz += alloc * bed->s->sizeof_phdr;
4588 p->p_filesz += header_pad;
4589 p->p_memsz += header_pad;
4593 if (p->p_type == PT_LOAD
4594 || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core))
4596 if (!m->includes_filehdr && !m->includes_phdrs)
4602 adjust = off - (p->p_offset + p->p_filesz);
4604 p->p_filesz += adjust;
4605 p->p_memsz += adjust;
4609 /* Set up p_filesz, p_memsz, p_align and p_flags from the section
4610 maps. Set filepos for sections in PT_LOAD segments, and in
4611 core files, for sections in PT_NOTE segments.
4612 assign_file_positions_for_non_load_sections will set filepos
4613 for other sections and update p_filesz for other segments. */
4614 for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
4617 bfd_size_type align;
4618 Elf_Internal_Shdr *this_hdr;
4621 this_hdr = &elf_section_data (sec)->this_hdr;
4622 align = (bfd_size_type) 1 << bfd_get_section_alignment (abfd, sec);
4624 if ((p->p_type == PT_LOAD
4625 || p->p_type == PT_TLS)
4626 && (this_hdr->sh_type != SHT_NOBITS
4627 || ((this_hdr->sh_flags & SHF_ALLOC) != 0
4628 && ((this_hdr->sh_flags & SHF_TLS) == 0
4629 || p->p_type == PT_TLS))))
4631 bfd_vma p_start = p->p_paddr;
4632 bfd_vma p_end = p_start + p->p_memsz;
4633 bfd_vma s_start = sec->lma;
4634 bfd_vma adjust = s_start - p_end;
4638 || p_end < p_start))
4640 (*_bfd_error_handler)
4641 (_("%B: section %A lma %#lx adjusted to %#lx"), abfd, sec,
4642 (unsigned long) s_start, (unsigned long) p_end);
4646 p->p_memsz += adjust;
4648 if (this_hdr->sh_type != SHT_NOBITS)
4650 if (p->p_filesz + adjust < p->p_memsz)
4652 /* We have a PROGBITS section following NOBITS ones.
4653 Allocate file space for the NOBITS section(s) and
4655 adjust = p->p_memsz - p->p_filesz;
4656 if (!write_zeros (abfd, off, adjust))
4660 p->p_filesz += adjust;
4664 if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)
4666 /* The section at i == 0 is the one that actually contains
4670 this_hdr->sh_offset = sec->filepos = off;
4671 off += this_hdr->sh_size;
4672 p->p_filesz = this_hdr->sh_size;
4678 /* The rest are fake sections that shouldn't be written. */
4687 if (p->p_type == PT_LOAD
4688 || (this_hdr->sh_type == SHT_NOBITS
4689 && (this_hdr->sh_flags & SHF_TLS) != 0
4690 && this_hdr->sh_offset == 0))
4692 if (this_hdr->sh_type == SHT_NOBITS)
4694 /* These sections don't really need sh_offset,
4695 but give them one anyway. */
4696 bfd_vma adjust = vma_page_aligned_bias (this_hdr->sh_addr,
4698 this_hdr->sh_offset = sec->filepos = off + adjust;
4702 this_hdr->sh_offset = sec->filepos = off;
4703 off += this_hdr->sh_size;
4707 if (this_hdr->sh_type != SHT_NOBITS)
4709 p->p_filesz += this_hdr->sh_size;
4710 /* A load section without SHF_ALLOC is something like
4711 a note section in a PT_NOTE segment. These take
4712 file space but are not loaded into memory. */
4713 if ((this_hdr->sh_flags & SHF_ALLOC) != 0)
4714 p->p_memsz += this_hdr->sh_size;
4716 else if ((this_hdr->sh_flags & SHF_ALLOC) != 0)
4718 if (p->p_type == PT_TLS)
4719 p->p_memsz += this_hdr->sh_size;
4721 /* .tbss is special. It doesn't contribute to p_memsz of
4723 else if ((this_hdr->sh_flags & SHF_TLS) == 0)
4724 p->p_memsz += this_hdr->sh_size;
4727 if (align > p->p_align
4728 && !m->p_align_valid
4729 && (p->p_type != PT_LOAD
4730 || (abfd->flags & D_PAGED) == 0))
4734 if (!m->p_flags_valid)
4737 if ((this_hdr->sh_flags & SHF_EXECINSTR) != 0)
4739 if ((this_hdr->sh_flags & SHF_WRITE) != 0)
4745 /* Check that all sections are in a PT_LOAD segment.
4746 Don't check funky gdb generated core files. */
4747 if (p->p_type == PT_LOAD && bfd_get_format (abfd) != bfd_core)
4749 bfd_boolean check_vma = TRUE;
4751 for (i = 1; i < m->count; i++)
4752 if (m->sections[i]->vma == m->sections[i - 1]->vma
4753 && ELF_SECTION_SIZE (&(elf_section_data (m->sections[i])
4754 ->this_hdr), p) != 0
4755 && ELF_SECTION_SIZE (&(elf_section_data (m->sections[i - 1])
4756 ->this_hdr), p) != 0)
4758 /* Looks like we have overlays packed into the segment. */
4763 for (i = 0; i < m->count; i++)
4765 Elf_Internal_Shdr *this_hdr;
4768 sec = m->sections[i];
4769 this_hdr = &(elf_section_data(sec)->this_hdr);
4770 if (!ELF_SECTION_IN_SEGMENT_1 (this_hdr, p, check_vma, 0)
4771 && !ELF_TBSS_SPECIAL (this_hdr, p))
4773 (*_bfd_error_handler)
4774 (_("%B: section `%A' can't be allocated in segment %d"),
4776 print_segment_map (m);
4782 elf_tdata (abfd)->next_file_pos = off;
4786 /* Assign file positions for the other sections. */
4789 assign_file_positions_for_non_load_sections (bfd *abfd,
4790 struct bfd_link_info *link_info)
4792 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
4793 Elf_Internal_Shdr **i_shdrpp;
4794 Elf_Internal_Shdr **hdrpp;
4795 Elf_Internal_Phdr *phdrs;
4796 Elf_Internal_Phdr *p;
4797 struct elf_segment_map *m;
4798 bfd_vma filehdr_vaddr, filehdr_paddr;
4799 bfd_vma phdrs_vaddr, phdrs_paddr;
4801 unsigned int num_sec;
4805 i_shdrpp = elf_elfsections (abfd);
4806 num_sec = elf_numsections (abfd);
4807 off = elf_tdata (abfd)->next_file_pos;
4808 for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++)
4810 struct elf_obj_tdata *tdata = elf_tdata (abfd);
4811 Elf_Internal_Shdr *hdr;
4814 if (hdr->bfd_section != NULL
4815 && (hdr->bfd_section->filepos != 0
4816 || (hdr->sh_type == SHT_NOBITS
4817 && hdr->contents == NULL)))
4818 BFD_ASSERT (hdr->sh_offset == hdr->bfd_section->filepos);
4819 else if ((hdr->sh_flags & SHF_ALLOC) != 0)
4821 (*_bfd_error_handler)
4822 (_("%B: warning: allocated section `%s' not in segment"),
4824 (hdr->bfd_section == NULL
4826 : hdr->bfd_section->name));
4827 /* We don't need to page align empty sections. */
4828 if ((abfd->flags & D_PAGED) != 0 && hdr->sh_size != 0)
4829 off += vma_page_aligned_bias (hdr->sh_addr, off,
4832 off += vma_page_aligned_bias (hdr->sh_addr, off,
4834 off = _bfd_elf_assign_file_position_for_section (hdr, off,
4837 else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA)
4838 && hdr->bfd_section == NULL)
4839 || hdr == i_shdrpp[tdata->symtab_section]
4840 || hdr == i_shdrpp[tdata->symtab_shndx_section]
4841 || hdr == i_shdrpp[tdata->strtab_section])
4842 hdr->sh_offset = -1;
4844 off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
4847 /* Now that we have set the section file positions, we can set up
4848 the file positions for the non PT_LOAD segments. */
4852 phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr;
4854 phdrs = elf_tdata (abfd)->phdr;
4855 for (m = elf_tdata (abfd)->segment_map, p = phdrs;
4860 if (p->p_type != PT_LOAD)
4863 if (m->includes_filehdr)
4865 filehdr_vaddr = p->p_vaddr;
4866 filehdr_paddr = p->p_paddr;
4868 if (m->includes_phdrs)
4870 phdrs_vaddr = p->p_vaddr;
4871 phdrs_paddr = p->p_paddr;
4872 if (m->includes_filehdr)
4874 phdrs_vaddr += bed->s->sizeof_ehdr;
4875 phdrs_paddr += bed->s->sizeof_ehdr;
4880 for (m = elf_tdata (abfd)->segment_map, p = phdrs;
4884 if (p->p_type == PT_GNU_RELRO)
4886 const Elf_Internal_Phdr *lp;
4888 BFD_ASSERT (!m->includes_filehdr && !m->includes_phdrs);
4890 if (link_info != NULL)
4892 /* During linking the range of the RELRO segment is passed
4894 for (lp = phdrs; lp < phdrs + count; ++lp)
4896 if (lp->p_type == PT_LOAD
4897 && lp->p_vaddr >= link_info->relro_start
4898 && lp->p_vaddr < link_info->relro_end
4899 && lp->p_vaddr + lp->p_filesz >= link_info->relro_end)
4905 /* Otherwise we are copying an executable or shared
4906 library, but we need to use the same linker logic. */
4907 for (lp = phdrs; lp < phdrs + count; ++lp)
4909 if (lp->p_type == PT_LOAD
4910 && lp->p_paddr == p->p_paddr)
4915 if (lp < phdrs + count)
4917 p->p_vaddr = lp->p_vaddr;
4918 p->p_paddr = lp->p_paddr;
4919 p->p_offset = lp->p_offset;
4920 if (link_info != NULL)
4921 p->p_filesz = link_info->relro_end - lp->p_vaddr;
4922 else if (m->p_size_valid)
4923 p->p_filesz = m->p_size;
4926 p->p_memsz = p->p_filesz;
4928 p->p_flags = (lp->p_flags & ~PF_W);
4932 memset (p, 0, sizeof *p);
4933 p->p_type = PT_NULL;
4936 else if (m->count != 0)
4938 if (p->p_type != PT_LOAD
4939 && (p->p_type != PT_NOTE
4940 || bfd_get_format (abfd) != bfd_core))
4942 BFD_ASSERT (!m->includes_filehdr && !m->includes_phdrs);
4945 p->p_offset = m->sections[0]->filepos;
4946 for (i = m->count; i-- != 0;)
4948 asection *sect = m->sections[i];
4949 Elf_Internal_Shdr *hdr = &elf_section_data (sect)->this_hdr;
4950 if (hdr->sh_type != SHT_NOBITS)
4952 p->p_filesz = (sect->filepos - m->sections[0]->filepos
4959 else if (m->includes_filehdr)
4961 p->p_vaddr = filehdr_vaddr;
4962 if (! m->p_paddr_valid)
4963 p->p_paddr = filehdr_paddr;
4965 else if (m->includes_phdrs)
4967 p->p_vaddr = phdrs_vaddr;
4968 if (! m->p_paddr_valid)
4969 p->p_paddr = phdrs_paddr;
4973 elf_tdata (abfd)->next_file_pos = off;
4978 /* Work out the file positions of all the sections. This is called by
4979 _bfd_elf_compute_section_file_positions. All the section sizes and
4980 VMAs must be known before this is called.
4982 Reloc sections come in two flavours: Those processed specially as
4983 "side-channel" data attached to a section to which they apply, and
4984 those that bfd doesn't process as relocations. The latter sort are
4985 stored in a normal bfd section by bfd_section_from_shdr. We don't
4986 consider the former sort here, unless they form part of the loadable
4987 image. Reloc sections not assigned here will be handled later by
4988 assign_file_positions_for_relocs.
4990 We also don't set the positions of the .symtab and .strtab here. */
4993 assign_file_positions_except_relocs (bfd *abfd,
4994 struct bfd_link_info *link_info)
4996 struct elf_obj_tdata *tdata = elf_tdata (abfd);
4997 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
4999 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
5001 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0
5002 && bfd_get_format (abfd) != bfd_core)
5004 Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd);
5005 unsigned int num_sec = elf_numsections (abfd);
5006 Elf_Internal_Shdr **hdrpp;
5009 /* Start after the ELF header. */
5010 off = i_ehdrp->e_ehsize;
5012 /* We are not creating an executable, which means that we are
5013 not creating a program header, and that the actual order of
5014 the sections in the file is unimportant. */
5015 for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++)
5017 Elf_Internal_Shdr *hdr;
5020 if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA)
5021 && hdr->bfd_section == NULL)
5022 || i == tdata->symtab_section
5023 || i == tdata->symtab_shndx_section
5024 || i == tdata->strtab_section)
5026 hdr->sh_offset = -1;
5029 off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
5036 /* Assign file positions for the loaded sections based on the
5037 assignment of sections to segments. */
5038 if (!assign_file_positions_for_load_sections (abfd, link_info))
5041 /* And for non-load sections. */
5042 if (!assign_file_positions_for_non_load_sections (abfd, link_info))
5045 if (bed->elf_backend_modify_program_headers != NULL)
5047 if (!(*bed->elf_backend_modify_program_headers) (abfd, link_info))
5051 /* Write out the program headers. */
5052 alloc = tdata->program_header_size / bed->s->sizeof_phdr;
5053 if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0
5054 || bed->s->write_out_phdrs (abfd, tdata->phdr, alloc) != 0)
5057 off = tdata->next_file_pos;
5060 /* Place the section headers. */
5061 off = align_file_position (off, 1 << bed->s->log_file_align);
5062 i_ehdrp->e_shoff = off;
5063 off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize;
5065 tdata->next_file_pos = off;
5071 prep_headers (bfd *abfd)
5073 Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form. */
5074 struct elf_strtab_hash *shstrtab;
5075 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
5077 i_ehdrp = elf_elfheader (abfd);
5079 shstrtab = _bfd_elf_strtab_init ();
5080 if (shstrtab == NULL)
5083 elf_shstrtab (abfd) = shstrtab;
5085 i_ehdrp->e_ident[EI_MAG0] = ELFMAG0;
5086 i_ehdrp->e_ident[EI_MAG1] = ELFMAG1;
5087 i_ehdrp->e_ident[EI_MAG2] = ELFMAG2;
5088 i_ehdrp->e_ident[EI_MAG3] = ELFMAG3;
5090 i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass;
5091 i_ehdrp->e_ident[EI_DATA] =
5092 bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB;
5093 i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current;
5095 if ((abfd->flags & DYNAMIC) != 0)
5096 i_ehdrp->e_type = ET_DYN;
5097 else if ((abfd->flags & EXEC_P) != 0)
5098 i_ehdrp->e_type = ET_EXEC;
5099 else if (bfd_get_format (abfd) == bfd_core)
5100 i_ehdrp->e_type = ET_CORE;
5102 i_ehdrp->e_type = ET_REL;
5104 switch (bfd_get_arch (abfd))
5106 case bfd_arch_unknown:
5107 i_ehdrp->e_machine = EM_NONE;
5110 /* There used to be a long list of cases here, each one setting
5111 e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE
5112 in the corresponding bfd definition. To avoid duplication,
5113 the switch was removed. Machines that need special handling
5114 can generally do it in elf_backend_final_write_processing(),
5115 unless they need the information earlier than the final write.
5116 Such need can generally be supplied by replacing the tests for
5117 e_machine with the conditions used to determine it. */
5119 i_ehdrp->e_machine = bed->elf_machine_code;
5122 i_ehdrp->e_version = bed->s->ev_current;
5123 i_ehdrp->e_ehsize = bed->s->sizeof_ehdr;
5125 /* No program header, for now. */
5126 i_ehdrp->e_phoff = 0;
5127 i_ehdrp->e_phentsize = 0;
5128 i_ehdrp->e_phnum = 0;
5130 /* Each bfd section is section header entry. */
5131 i_ehdrp->e_entry = bfd_get_start_address (abfd);
5132 i_ehdrp->e_shentsize = bed->s->sizeof_shdr;
5134 /* If we're building an executable, we'll need a program header table. */
5135 if (abfd->flags & EXEC_P)
5136 /* It all happens later. */
5140 i_ehdrp->e_phentsize = 0;
5141 i_ehdrp->e_phoff = 0;
5144 elf_tdata (abfd)->symtab_hdr.sh_name =
5145 (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE);
5146 elf_tdata (abfd)->strtab_hdr.sh_name =
5147 (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE);
5148 elf_tdata (abfd)->shstrtab_hdr.sh_name =
5149 (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE);
5150 if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1
5151 || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1
5152 || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1)
5158 /* Assign file positions for all the reloc sections which are not part
5159 of the loadable file image. */
5162 _bfd_elf_assign_file_positions_for_relocs (bfd *abfd)
5165 unsigned int i, num_sec;
5166 Elf_Internal_Shdr **shdrpp;
5168 off = elf_tdata (abfd)->next_file_pos;
5170 num_sec = elf_numsections (abfd);
5171 for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++)
5173 Elf_Internal_Shdr *shdrp;
5176 if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA)
5177 && shdrp->sh_offset == -1)
5178 off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE);
5181 elf_tdata (abfd)->next_file_pos = off;
5185 _bfd_elf_write_object_contents (bfd *abfd)
5187 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
5188 Elf_Internal_Shdr **i_shdrp;
5190 unsigned int count, num_sec;
5192 if (! abfd->output_has_begun
5193 && ! _bfd_elf_compute_section_file_positions (abfd, NULL))
5196 i_shdrp = elf_elfsections (abfd);
5199 bfd_map_over_sections (abfd, bed->s->write_relocs, &failed);
5203 _bfd_elf_assign_file_positions_for_relocs (abfd);
5205 /* After writing the headers, we need to write the sections too... */
5206 num_sec = elf_numsections (abfd);
5207 for (count = 1; count < num_sec; count++)
5209 if (bed->elf_backend_section_processing)
5210 (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]);
5211 if (i_shdrp[count]->contents)
5213 bfd_size_type amt = i_shdrp[count]->sh_size;
5215 if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0
5216 || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt)
5221 /* Write out the section header names. */
5222 if (elf_shstrtab (abfd) != NULL
5223 && (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0
5224 || !_bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd))))
5227 if (bed->elf_backend_final_write_processing)
5228 (*bed->elf_backend_final_write_processing) (abfd,
5229 elf_tdata (abfd)->linker);
5231 if (!bed->s->write_shdrs_and_ehdr (abfd))
5234 /* This is last since write_shdrs_and_ehdr can touch i_shdrp[0]. */
5235 if (elf_tdata (abfd)->after_write_object_contents)
5236 return (*elf_tdata (abfd)->after_write_object_contents) (abfd);
5242 _bfd_elf_write_corefile_contents (bfd *abfd)
5244 /* Hopefully this can be done just like an object file. */
5245 return _bfd_elf_write_object_contents (abfd);
5248 /* Given a section, search the header to find them. */
5251 _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect)
5253 const struct elf_backend_data *bed;
5254 unsigned int sec_index;
5256 if (elf_section_data (asect) != NULL
5257 && elf_section_data (asect)->this_idx != 0)
5258 return elf_section_data (asect)->this_idx;
5260 if (bfd_is_abs_section (asect))
5261 sec_index = SHN_ABS;
5262 else if (bfd_is_com_section (asect))
5263 sec_index = SHN_COMMON;
5264 else if (bfd_is_und_section (asect))
5265 sec_index = SHN_UNDEF;
5267 sec_index = SHN_BAD;
5269 bed = get_elf_backend_data (abfd);
5270 if (bed->elf_backend_section_from_bfd_section)
5272 int retval = sec_index;
5274 if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval))
5278 if (sec_index == SHN_BAD)
5279 bfd_set_error (bfd_error_nonrepresentable_section);
5284 /* Given a BFD symbol, return the index in the ELF symbol table, or -1
5288 _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr)
5290 asymbol *asym_ptr = *asym_ptr_ptr;
5292 flagword flags = asym_ptr->flags;
5294 /* When gas creates relocations against local labels, it creates its
5295 own symbol for the section, but does put the symbol into the
5296 symbol chain, so udata is 0. When the linker is generating
5297 relocatable output, this section symbol may be for one of the
5298 input sections rather than the output section. */
5299 if (asym_ptr->udata.i == 0
5300 && (flags & BSF_SECTION_SYM)
5301 && asym_ptr->section)
5306 sec = asym_ptr->section;
5307 if (sec->owner != abfd && sec->output_section != NULL)
5308 sec = sec->output_section;
5309 if (sec->owner == abfd
5310 && (indx = sec->index) < elf_num_section_syms (abfd)
5311 && elf_section_syms (abfd)[indx] != NULL)
5312 asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i;
5315 idx = asym_ptr->udata.i;
5319 /* This case can occur when using --strip-symbol on a symbol
5320 which is used in a relocation entry. */
5321 (*_bfd_error_handler)
5322 (_("%B: symbol `%s' required but not present"),
5323 abfd, bfd_asymbol_name (asym_ptr));
5324 bfd_set_error (bfd_error_no_symbols);
5331 "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx\n",
5332 (long) asym_ptr, asym_ptr->name, idx, (long) flags);
5340 /* Rewrite program header information. */
5343 rewrite_elf_program_header (bfd *ibfd, bfd *obfd)
5345 Elf_Internal_Ehdr *iehdr;
5346 struct elf_segment_map *map;
5347 struct elf_segment_map *map_first;
5348 struct elf_segment_map **pointer_to_map;
5349 Elf_Internal_Phdr *segment;
5352 unsigned int num_segments;
5353 bfd_boolean phdr_included = FALSE;
5354 bfd_boolean p_paddr_valid;
5355 bfd_vma maxpagesize;
5356 struct elf_segment_map *phdr_adjust_seg = NULL;
5357 unsigned int phdr_adjust_num = 0;
5358 const struct elf_backend_data *bed;
5360 bed = get_elf_backend_data (ibfd);
5361 iehdr = elf_elfheader (ibfd);
5364 pointer_to_map = &map_first;
5366 num_segments = elf_elfheader (ibfd)->e_phnum;
5367 maxpagesize = get_elf_backend_data (obfd)->maxpagesize;
5369 /* Returns the end address of the segment + 1. */
5370 #define SEGMENT_END(segment, start) \
5371 (start + (segment->p_memsz > segment->p_filesz \
5372 ? segment->p_memsz : segment->p_filesz))
5374 #define SECTION_SIZE(section, segment) \
5375 (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \
5376 != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \
5377 ? section->size : 0)
5379 /* Returns TRUE if the given section is contained within
5380 the given segment. VMA addresses are compared. */
5381 #define IS_CONTAINED_BY_VMA(section, segment) \
5382 (section->vma >= segment->p_vaddr \
5383 && (section->vma + SECTION_SIZE (section, segment) \
5384 <= (SEGMENT_END (segment, segment->p_vaddr))))
5386 /* Returns TRUE if the given section is contained within
5387 the given segment. LMA addresses are compared. */
5388 #define IS_CONTAINED_BY_LMA(section, segment, base) \
5389 (section->lma >= base \
5390 && (section->lma + SECTION_SIZE (section, segment) \
5391 <= SEGMENT_END (segment, base)))
5393 /* Handle PT_NOTE segment. */
5394 #define IS_NOTE(p, s) \
5395 (p->p_type == PT_NOTE \
5396 && elf_section_type (s) == SHT_NOTE \
5397 && (bfd_vma) s->filepos >= p->p_offset \
5398 && ((bfd_vma) s->filepos + s->size \
5399 <= p->p_offset + p->p_filesz))
5401 /* Special case: corefile "NOTE" section containing regs, prpsinfo
5403 #define IS_COREFILE_NOTE(p, s) \
5405 && bfd_get_format (ibfd) == bfd_core \
5409 /* The complicated case when p_vaddr is 0 is to handle the Solaris
5410 linker, which generates a PT_INTERP section with p_vaddr and
5411 p_memsz set to 0. */
5412 #define IS_SOLARIS_PT_INTERP(p, s) \
5414 && p->p_paddr == 0 \
5415 && p->p_memsz == 0 \
5416 && p->p_filesz > 0 \
5417 && (s->flags & SEC_HAS_CONTENTS) != 0 \
5419 && (bfd_vma) s->filepos >= p->p_offset \
5420 && ((bfd_vma) s->filepos + s->size \
5421 <= p->p_offset + p->p_filesz))
5423 /* Decide if the given section should be included in the given segment.
5424 A section will be included if:
5425 1. It is within the address space of the segment -- we use the LMA
5426 if that is set for the segment and the VMA otherwise,
5427 2. It is an allocated section or a NOTE section in a PT_NOTE
5429 3. There is an output section associated with it,
5430 4. The section has not already been allocated to a previous segment.
5431 5. PT_GNU_STACK segments do not include any sections.
5432 6. PT_TLS segment includes only SHF_TLS sections.
5433 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments.
5434 8. PT_DYNAMIC should not contain empty sections at the beginning
5435 (with the possible exception of .dynamic). */
5436 #define IS_SECTION_IN_INPUT_SEGMENT(section, segment, bed) \
5437 ((((segment->p_paddr \
5438 ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \
5439 : IS_CONTAINED_BY_VMA (section, segment)) \
5440 && (section->flags & SEC_ALLOC) != 0) \
5441 || IS_NOTE (segment, section)) \
5442 && segment->p_type != PT_GNU_STACK \
5443 && (segment->p_type != PT_TLS \
5444 || (section->flags & SEC_THREAD_LOCAL)) \
5445 && (segment->p_type == PT_LOAD \
5446 || segment->p_type == PT_TLS \
5447 || (section->flags & SEC_THREAD_LOCAL) == 0) \
5448 && (segment->p_type != PT_DYNAMIC \
5449 || SECTION_SIZE (section, segment) > 0 \
5450 || (segment->p_paddr \
5451 ? segment->p_paddr != section->lma \
5452 : segment->p_vaddr != section->vma) \
5453 || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \
5455 && !section->segment_mark)
5457 /* If the output section of a section in the input segment is NULL,
5458 it is removed from the corresponding output segment. */
5459 #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \
5460 (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed) \
5461 && section->output_section != NULL)
5463 /* Returns TRUE iff seg1 starts after the end of seg2. */
5464 #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \
5465 (seg1->field >= SEGMENT_END (seg2, seg2->field))
5467 /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both
5468 their VMA address ranges and their LMA address ranges overlap.
5469 It is possible to have overlapping VMA ranges without overlapping LMA
5470 ranges. RedBoot images for example can have both .data and .bss mapped
5471 to the same VMA range, but with the .data section mapped to a different
5473 #define SEGMENT_OVERLAPS(seg1, seg2) \
5474 ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \
5475 || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \
5476 && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \
5477 || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr)))
5479 /* Initialise the segment mark field. */
5480 for (section = ibfd->sections; section != NULL; section = section->next)
5481 section->segment_mark = FALSE;
5483 /* The Solaris linker creates program headers in which all the
5484 p_paddr fields are zero. When we try to objcopy or strip such a
5485 file, we get confused. Check for this case, and if we find it
5486 don't set the p_paddr_valid fields. */
5487 p_paddr_valid = FALSE;
5488 for (i = 0, segment = elf_tdata (ibfd)->phdr;
5491 if (segment->p_paddr != 0)
5493 p_paddr_valid = TRUE;
5497 /* Scan through the segments specified in the program header
5498 of the input BFD. For this first scan we look for overlaps
5499 in the loadable segments. These can be created by weird
5500 parameters to objcopy. Also, fix some solaris weirdness. */
5501 for (i = 0, segment = elf_tdata (ibfd)->phdr;
5506 Elf_Internal_Phdr *segment2;
5508 if (segment->p_type == PT_INTERP)
5509 for (section = ibfd->sections; section; section = section->next)
5510 if (IS_SOLARIS_PT_INTERP (segment, section))
5512 /* Mininal change so that the normal section to segment
5513 assignment code will work. */
5514 segment->p_vaddr = section->vma;
5518 if (segment->p_type != PT_LOAD)
5520 /* Remove PT_GNU_RELRO segment. */
5521 if (segment->p_type == PT_GNU_RELRO)
5522 segment->p_type = PT_NULL;
5526 /* Determine if this segment overlaps any previous segments. */
5527 for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2++)
5529 bfd_signed_vma extra_length;
5531 if (segment2->p_type != PT_LOAD
5532 || !SEGMENT_OVERLAPS (segment, segment2))
5535 /* Merge the two segments together. */
5536 if (segment2->p_vaddr < segment->p_vaddr)
5538 /* Extend SEGMENT2 to include SEGMENT and then delete
5540 extra_length = (SEGMENT_END (segment, segment->p_vaddr)
5541 - SEGMENT_END (segment2, segment2->p_vaddr));
5543 if (extra_length > 0)
5545 segment2->p_memsz += extra_length;
5546 segment2->p_filesz += extra_length;
5549 segment->p_type = PT_NULL;
5551 /* Since we have deleted P we must restart the outer loop. */
5553 segment = elf_tdata (ibfd)->phdr;
5558 /* Extend SEGMENT to include SEGMENT2 and then delete
5560 extra_length = (SEGMENT_END (segment2, segment2->p_vaddr)
5561 - SEGMENT_END (segment, segment->p_vaddr));
5563 if (extra_length > 0)
5565 segment->p_memsz += extra_length;
5566 segment->p_filesz += extra_length;
5569 segment2->p_type = PT_NULL;
5574 /* The second scan attempts to assign sections to segments. */
5575 for (i = 0, segment = elf_tdata (ibfd)->phdr;
5579 unsigned int section_count;
5580 asection **sections;
5581 asection *output_section;
5583 bfd_vma matching_lma;
5584 bfd_vma suggested_lma;
5587 asection *first_section;
5588 bfd_boolean first_matching_lma;
5589 bfd_boolean first_suggested_lma;
5591 if (segment->p_type == PT_NULL)
5594 first_section = NULL;
5595 /* Compute how many sections might be placed into this segment. */
5596 for (section = ibfd->sections, section_count = 0;
5598 section = section->next)
5600 /* Find the first section in the input segment, which may be
5601 removed from the corresponding output segment. */
5602 if (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed))
5604 if (first_section == NULL)
5605 first_section = section;
5606 if (section->output_section != NULL)
5611 /* Allocate a segment map big enough to contain
5612 all of the sections we have selected. */
5613 amt = sizeof (struct elf_segment_map);
5614 amt += ((bfd_size_type) section_count - 1) * sizeof (asection *);
5615 map = (struct elf_segment_map *) bfd_zalloc (obfd, amt);
5619 /* Initialise the fields of the segment map. Default to
5620 using the physical address of the segment in the input BFD. */
5622 map->p_type = segment->p_type;
5623 map->p_flags = segment->p_flags;
5624 map->p_flags_valid = 1;
5626 /* If the first section in the input segment is removed, there is
5627 no need to preserve segment physical address in the corresponding
5629 if (!first_section || first_section->output_section != NULL)
5631 map->p_paddr = segment->p_paddr;
5632 map->p_paddr_valid = p_paddr_valid;
5635 /* Determine if this segment contains the ELF file header
5636 and if it contains the program headers themselves. */
5637 map->includes_filehdr = (segment->p_offset == 0
5638 && segment->p_filesz >= iehdr->e_ehsize);
5639 map->includes_phdrs = 0;
5641 if (!phdr_included || segment->p_type != PT_LOAD)
5643 map->includes_phdrs =
5644 (segment->p_offset <= (bfd_vma) iehdr->e_phoff
5645 && (segment->p_offset + segment->p_filesz
5646 >= ((bfd_vma) iehdr->e_phoff
5647 + iehdr->e_phnum * iehdr->e_phentsize)));
5649 if (segment->p_type == PT_LOAD && map->includes_phdrs)
5650 phdr_included = TRUE;
5653 if (section_count == 0)
5655 /* Special segments, such as the PT_PHDR segment, may contain
5656 no sections, but ordinary, loadable segments should contain
5657 something. They are allowed by the ELF spec however, so only
5658 a warning is produced. */
5659 if (segment->p_type == PT_LOAD)
5660 (*_bfd_error_handler) (_("%B: warning: Empty loadable segment"
5661 " detected, is this intentional ?\n"),
5665 *pointer_to_map = map;
5666 pointer_to_map = &map->next;
5671 /* Now scan the sections in the input BFD again and attempt
5672 to add their corresponding output sections to the segment map.
5673 The problem here is how to handle an output section which has
5674 been moved (ie had its LMA changed). There are four possibilities:
5676 1. None of the sections have been moved.
5677 In this case we can continue to use the segment LMA from the
5680 2. All of the sections have been moved by the same amount.
5681 In this case we can change the segment's LMA to match the LMA
5682 of the first section.
5684 3. Some of the sections have been moved, others have not.
5685 In this case those sections which have not been moved can be
5686 placed in the current segment which will have to have its size,
5687 and possibly its LMA changed, and a new segment or segments will
5688 have to be created to contain the other sections.
5690 4. The sections have been moved, but not by the same amount.
5691 In this case we can change the segment's LMA to match the LMA
5692 of the first section and we will have to create a new segment
5693 or segments to contain the other sections.
5695 In order to save time, we allocate an array to hold the section
5696 pointers that we are interested in. As these sections get assigned
5697 to a segment, they are removed from this array. */
5699 sections = (asection **) bfd_malloc2 (section_count, sizeof (asection *));
5700 if (sections == NULL)
5703 /* Step One: Scan for segment vs section LMA conflicts.
5704 Also add the sections to the section array allocated above.
5705 Also add the sections to the current segment. In the common
5706 case, where the sections have not been moved, this means that
5707 we have completely filled the segment, and there is nothing
5712 first_matching_lma = TRUE;
5713 first_suggested_lma = TRUE;
5715 for (section = ibfd->sections;
5717 section = section->next)
5718 if (section == first_section)
5721 for (j = 0; section != NULL; section = section->next)
5723 if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed))
5725 output_section = section->output_section;
5727 sections[j++] = section;
5729 /* The Solaris native linker always sets p_paddr to 0.
5730 We try to catch that case here, and set it to the
5731 correct value. Note - some backends require that
5732 p_paddr be left as zero. */
5734 && segment->p_vaddr != 0
5735 && !bed->want_p_paddr_set_to_zero
5737 && output_section->lma != 0
5738 && output_section->vma == (segment->p_vaddr
5739 + (map->includes_filehdr
5742 + (map->includes_phdrs
5744 * iehdr->e_phentsize)
5746 map->p_paddr = segment->p_vaddr;
5748 /* Match up the physical address of the segment with the
5749 LMA address of the output section. */
5750 if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr)
5751 || IS_COREFILE_NOTE (segment, section)
5752 || (bed->want_p_paddr_set_to_zero
5753 && IS_CONTAINED_BY_VMA (output_section, segment)))
5755 if (first_matching_lma || output_section->lma < matching_lma)
5757 matching_lma = output_section->lma;
5758 first_matching_lma = FALSE;
5761 /* We assume that if the section fits within the segment
5762 then it does not overlap any other section within that
5764 map->sections[isec++] = output_section;
5766 else if (first_suggested_lma)
5768 suggested_lma = output_section->lma;
5769 first_suggested_lma = FALSE;
5772 if (j == section_count)
5777 BFD_ASSERT (j == section_count);
5779 /* Step Two: Adjust the physical address of the current segment,
5781 if (isec == section_count)
5783 /* All of the sections fitted within the segment as currently
5784 specified. This is the default case. Add the segment to
5785 the list of built segments and carry on to process the next
5786 program header in the input BFD. */
5787 map->count = section_count;
5788 *pointer_to_map = map;
5789 pointer_to_map = &map->next;
5792 && !bed->want_p_paddr_set_to_zero
5793 && matching_lma != map->p_paddr
5794 && !map->includes_filehdr
5795 && !map->includes_phdrs)
5796 /* There is some padding before the first section in the
5797 segment. So, we must account for that in the output
5799 map->p_vaddr_offset = matching_lma - map->p_paddr;
5806 if (!first_matching_lma)
5808 /* At least one section fits inside the current segment.
5809 Keep it, but modify its physical address to match the
5810 LMA of the first section that fitted. */
5811 map->p_paddr = matching_lma;
5815 /* None of the sections fitted inside the current segment.
5816 Change the current segment's physical address to match
5817 the LMA of the first section. */
5818 map->p_paddr = suggested_lma;
5821 /* Offset the segment physical address from the lma
5822 to allow for space taken up by elf headers. */
5823 if (map->includes_filehdr)
5825 if (map->p_paddr >= iehdr->e_ehsize)
5826 map->p_paddr -= iehdr->e_ehsize;
5829 map->includes_filehdr = FALSE;
5830 map->includes_phdrs = FALSE;
5834 if (map->includes_phdrs)
5836 if (map->p_paddr >= iehdr->e_phnum * iehdr->e_phentsize)
5838 map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize;
5840 /* iehdr->e_phnum is just an estimate of the number
5841 of program headers that we will need. Make a note
5842 here of the number we used and the segment we chose
5843 to hold these headers, so that we can adjust the
5844 offset when we know the correct value. */
5845 phdr_adjust_num = iehdr->e_phnum;
5846 phdr_adjust_seg = map;
5849 map->includes_phdrs = FALSE;
5853 /* Step Three: Loop over the sections again, this time assigning
5854 those that fit to the current segment and removing them from the
5855 sections array; but making sure not to leave large gaps. Once all
5856 possible sections have been assigned to the current segment it is
5857 added to the list of built segments and if sections still remain
5858 to be assigned, a new segment is constructed before repeating
5865 first_suggested_lma = TRUE;
5867 /* Fill the current segment with sections that fit. */
5868 for (j = 0; j < section_count; j++)
5870 section = sections[j];
5872 if (section == NULL)
5875 output_section = section->output_section;
5877 BFD_ASSERT (output_section != NULL);
5879 if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr)
5880 || IS_COREFILE_NOTE (segment, section))
5882 if (map->count == 0)
5884 /* If the first section in a segment does not start at
5885 the beginning of the segment, then something is
5887 if (output_section->lma
5889 + (map->includes_filehdr ? iehdr->e_ehsize : 0)
5890 + (map->includes_phdrs
5891 ? iehdr->e_phnum * iehdr->e_phentsize
5899 prev_sec = map->sections[map->count - 1];
5901 /* If the gap between the end of the previous section
5902 and the start of this section is more than
5903 maxpagesize then we need to start a new segment. */
5904 if ((BFD_ALIGN (prev_sec->lma + prev_sec->size,
5906 < BFD_ALIGN (output_section->lma, maxpagesize))
5907 || (prev_sec->lma + prev_sec->size
5908 > output_section->lma))
5910 if (first_suggested_lma)
5912 suggested_lma = output_section->lma;
5913 first_suggested_lma = FALSE;
5920 map->sections[map->count++] = output_section;
5923 section->segment_mark = TRUE;
5925 else if (first_suggested_lma)
5927 suggested_lma = output_section->lma;
5928 first_suggested_lma = FALSE;
5932 BFD_ASSERT (map->count > 0);
5934 /* Add the current segment to the list of built segments. */
5935 *pointer_to_map = map;
5936 pointer_to_map = &map->next;
5938 if (isec < section_count)
5940 /* We still have not allocated all of the sections to
5941 segments. Create a new segment here, initialise it
5942 and carry on looping. */
5943 amt = sizeof (struct elf_segment_map);
5944 amt += ((bfd_size_type) section_count - 1) * sizeof (asection *);
5945 map = (struct elf_segment_map *) bfd_alloc (obfd, amt);
5952 /* Initialise the fields of the segment map. Set the physical
5953 physical address to the LMA of the first section that has
5954 not yet been assigned. */
5956 map->p_type = segment->p_type;
5957 map->p_flags = segment->p_flags;
5958 map->p_flags_valid = 1;
5959 map->p_paddr = suggested_lma;
5960 map->p_paddr_valid = p_paddr_valid;
5961 map->includes_filehdr = 0;
5962 map->includes_phdrs = 0;
5965 while (isec < section_count);
5970 elf_tdata (obfd)->segment_map = map_first;
5972 /* If we had to estimate the number of program headers that were
5973 going to be needed, then check our estimate now and adjust
5974 the offset if necessary. */
5975 if (phdr_adjust_seg != NULL)
5979 for (count = 0, map = map_first; map != NULL; map = map->next)
5982 if (count > phdr_adjust_num)
5983 phdr_adjust_seg->p_paddr
5984 -= (count - phdr_adjust_num) * iehdr->e_phentsize;
5989 #undef IS_CONTAINED_BY_VMA
5990 #undef IS_CONTAINED_BY_LMA
5992 #undef IS_COREFILE_NOTE
5993 #undef IS_SOLARIS_PT_INTERP
5994 #undef IS_SECTION_IN_INPUT_SEGMENT
5995 #undef INCLUDE_SECTION_IN_SEGMENT
5996 #undef SEGMENT_AFTER_SEGMENT
5997 #undef SEGMENT_OVERLAPS
6001 /* Copy ELF program header information. */
6004 copy_elf_program_header (bfd *ibfd, bfd *obfd)
6006 Elf_Internal_Ehdr *iehdr;
6007 struct elf_segment_map *map;
6008 struct elf_segment_map *map_first;
6009 struct elf_segment_map **pointer_to_map;
6010 Elf_Internal_Phdr *segment;
6012 unsigned int num_segments;
6013 bfd_boolean phdr_included = FALSE;
6014 bfd_boolean p_paddr_valid;
6016 iehdr = elf_elfheader (ibfd);
6019 pointer_to_map = &map_first;
6021 /* If all the segment p_paddr fields are zero, don't set
6022 map->p_paddr_valid. */
6023 p_paddr_valid = FALSE;
6024 num_segments = elf_elfheader (ibfd)->e_phnum;
6025 for (i = 0, segment = elf_tdata (ibfd)->phdr;
6028 if (segment->p_paddr != 0)
6030 p_paddr_valid = TRUE;
6034 for (i = 0, segment = elf_tdata (ibfd)->phdr;
6039 unsigned int section_count;
6041 Elf_Internal_Shdr *this_hdr;
6042 asection *first_section = NULL;
6043 asection *lowest_section;
6045 /* Compute how many sections are in this segment. */
6046 for (section = ibfd->sections, section_count = 0;
6048 section = section->next)
6050 this_hdr = &(elf_section_data(section)->this_hdr);
6051 if (ELF_SECTION_IN_SEGMENT (this_hdr, segment))
6053 if (first_section == NULL)
6054 first_section = section;
6059 /* Allocate a segment map big enough to contain
6060 all of the sections we have selected. */
6061 amt = sizeof (struct elf_segment_map);
6062 if (section_count != 0)
6063 amt += ((bfd_size_type) section_count - 1) * sizeof (asection *);
6064 map = (struct elf_segment_map *) bfd_zalloc (obfd, amt);
6068 /* Initialize the fields of the output segment map with the
6071 map->p_type = segment->p_type;
6072 map->p_flags = segment->p_flags;
6073 map->p_flags_valid = 1;
6074 map->p_paddr = segment->p_paddr;
6075 map->p_paddr_valid = p_paddr_valid;
6076 map->p_align = segment->p_align;
6077 map->p_align_valid = 1;
6078 map->p_vaddr_offset = 0;
6080 if (map->p_type == PT_GNU_RELRO)
6082 /* The PT_GNU_RELRO segment may contain the first a few
6083 bytes in the .got.plt section even if the whole .got.plt
6084 section isn't in the PT_GNU_RELRO segment. We won't
6085 change the size of the PT_GNU_RELRO segment. */
6086 map->p_size = segment->p_memsz;
6087 map->p_size_valid = 1;
6090 /* Determine if this segment contains the ELF file header
6091 and if it contains the program headers themselves. */
6092 map->includes_filehdr = (segment->p_offset == 0
6093 && segment->p_filesz >= iehdr->e_ehsize);
6095 map->includes_phdrs = 0;
6096 if (! phdr_included || segment->p_type != PT_LOAD)
6098 map->includes_phdrs =
6099 (segment->p_offset <= (bfd_vma) iehdr->e_phoff
6100 && (segment->p_offset + segment->p_filesz
6101 >= ((bfd_vma) iehdr->e_phoff
6102 + iehdr->e_phnum * iehdr->e_phentsize)));
6104 if (segment->p_type == PT_LOAD && map->includes_phdrs)
6105 phdr_included = TRUE;
6108 lowest_section = first_section;
6109 if (section_count != 0)
6111 unsigned int isec = 0;
6113 for (section = first_section;
6115 section = section->next)
6117 this_hdr = &(elf_section_data(section)->this_hdr);
6118 if (ELF_SECTION_IN_SEGMENT (this_hdr, segment))
6120 map->sections[isec++] = section->output_section;
6121 if (section->lma < lowest_section->lma)
6122 lowest_section = section;
6123 if ((section->flags & SEC_ALLOC) != 0)
6127 /* Section lmas are set up from PT_LOAD header
6128 p_paddr in _bfd_elf_make_section_from_shdr.
6129 If this header has a p_paddr that disagrees
6130 with the section lma, flag the p_paddr as
6132 if ((section->flags & SEC_LOAD) != 0)
6133 seg_off = this_hdr->sh_offset - segment->p_offset;
6135 seg_off = this_hdr->sh_addr - segment->p_vaddr;
6136 if (section->lma - segment->p_paddr != seg_off)
6137 map->p_paddr_valid = FALSE;
6139 if (isec == section_count)
6145 if (map->includes_filehdr && lowest_section != NULL)
6146 /* We need to keep the space used by the headers fixed. */
6147 map->header_size = lowest_section->vma - segment->p_vaddr;
6149 if (!map->includes_phdrs
6150 && !map->includes_filehdr
6151 && map->p_paddr_valid)
6152 /* There is some other padding before the first section. */
6153 map->p_vaddr_offset = ((lowest_section ? lowest_section->lma : 0)
6154 - segment->p_paddr);
6156 map->count = section_count;
6157 *pointer_to_map = map;
6158 pointer_to_map = &map->next;
6161 elf_tdata (obfd)->segment_map = map_first;
6165 /* Copy private BFD data. This copies or rewrites ELF program header
6169 copy_private_bfd_data (bfd *ibfd, bfd *obfd)
6171 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
6172 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
6175 if (elf_tdata (ibfd)->phdr == NULL)
6178 if (ibfd->xvec == obfd->xvec)
6180 /* Check to see if any sections in the input BFD
6181 covered by ELF program header have changed. */
6182 Elf_Internal_Phdr *segment;
6183 asection *section, *osec;
6184 unsigned int i, num_segments;
6185 Elf_Internal_Shdr *this_hdr;
6186 const struct elf_backend_data *bed;
6188 bed = get_elf_backend_data (ibfd);
6190 /* Regenerate the segment map if p_paddr is set to 0. */
6191 if (bed->want_p_paddr_set_to_zero)
6194 /* Initialize the segment mark field. */
6195 for (section = obfd->sections; section != NULL;
6196 section = section->next)
6197 section->segment_mark = FALSE;
6199 num_segments = elf_elfheader (ibfd)->e_phnum;
6200 for (i = 0, segment = elf_tdata (ibfd)->phdr;
6204 /* PR binutils/3535. The Solaris linker always sets the p_paddr
6205 and p_memsz fields of special segments (DYNAMIC, INTERP) to 0
6206 which severly confuses things, so always regenerate the segment
6207 map in this case. */
6208 if (segment->p_paddr == 0
6209 && segment->p_memsz == 0
6210 && (segment->p_type == PT_INTERP || segment->p_type == PT_DYNAMIC))
6213 for (section = ibfd->sections;
6214 section != NULL; section = section->next)
6216 /* We mark the output section so that we know it comes
6217 from the input BFD. */
6218 osec = section->output_section;
6220 osec->segment_mark = TRUE;
6222 /* Check if this section is covered by the segment. */
6223 this_hdr = &(elf_section_data(section)->this_hdr);
6224 if (ELF_SECTION_IN_SEGMENT (this_hdr, segment))
6226 /* FIXME: Check if its output section is changed or
6227 removed. What else do we need to check? */
6229 || section->flags != osec->flags
6230 || section->lma != osec->lma
6231 || section->vma != osec->vma
6232 || section->size != osec->size
6233 || section->rawsize != osec->rawsize
6234 || section->alignment_power != osec->alignment_power)
6240 /* Check to see if any output section do not come from the
6242 for (section = obfd->sections; section != NULL;
6243 section = section->next)
6245 if (section->segment_mark == FALSE)
6248 section->segment_mark = FALSE;
6251 return copy_elf_program_header (ibfd, obfd);
6255 return rewrite_elf_program_header (ibfd, obfd);
6258 /* Initialize private output section information from input section. */
6261 _bfd_elf_init_private_section_data (bfd *ibfd,
6265 struct bfd_link_info *link_info)
6268 Elf_Internal_Shdr *ihdr, *ohdr;
6269 bfd_boolean final_link = link_info != NULL && !link_info->relocatable;
6271 if (ibfd->xvec->flavour != bfd_target_elf_flavour
6272 || obfd->xvec->flavour != bfd_target_elf_flavour)
6275 /* For objcopy and relocatable link, don't copy the output ELF
6276 section type from input if the output BFD section flags have been
6277 set to something different. For a final link allow some flags
6278 that the linker clears to differ. */
6279 if (elf_section_type (osec) == SHT_NULL
6280 && (osec->flags == isec->flags
6282 && ((osec->flags ^ isec->flags)
6283 & ~(SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_RELOC)) == 0)))
6284 elf_section_type (osec) = elf_section_type (isec);
6286 /* FIXME: Is this correct for all OS/PROC specific flags? */
6287 elf_section_flags (osec) |= (elf_section_flags (isec)
6288 & (SHF_MASKOS | SHF_MASKPROC));
6290 /* Set things up for objcopy and relocatable link. The output
6291 SHT_GROUP section will have its elf_next_in_group pointing back
6292 to the input group members. Ignore linker created group section.
6293 See elfNN_ia64_object_p in elfxx-ia64.c. */
6296 if (elf_sec_group (isec) == NULL
6297 || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0)
6299 if (elf_section_flags (isec) & SHF_GROUP)
6300 elf_section_flags (osec) |= SHF_GROUP;
6301 elf_next_in_group (osec) = elf_next_in_group (isec);
6302 elf_section_data (osec)->group = elf_section_data (isec)->group;
6306 ihdr = &elf_section_data (isec)->this_hdr;
6308 /* We need to handle elf_linked_to_section for SHF_LINK_ORDER. We
6309 don't use the output section of the linked-to section since it
6310 may be NULL at this point. */
6311 if ((ihdr->sh_flags & SHF_LINK_ORDER) != 0)
6313 ohdr = &elf_section_data (osec)->this_hdr;
6314 ohdr->sh_flags |= SHF_LINK_ORDER;
6315 elf_linked_to_section (osec) = elf_linked_to_section (isec);
6318 osec->use_rela_p = isec->use_rela_p;
6323 /* Copy private section information. This copies over the entsize
6324 field, and sometimes the info field. */
6327 _bfd_elf_copy_private_section_data (bfd *ibfd,
6332 Elf_Internal_Shdr *ihdr, *ohdr;
6334 if (ibfd->xvec->flavour != bfd_target_elf_flavour
6335 || obfd->xvec->flavour != bfd_target_elf_flavour)
6338 ihdr = &elf_section_data (isec)->this_hdr;
6339 ohdr = &elf_section_data (osec)->this_hdr;
6341 ohdr->sh_entsize = ihdr->sh_entsize;
6343 if (ihdr->sh_type == SHT_SYMTAB
6344 || ihdr->sh_type == SHT_DYNSYM
6345 || ihdr->sh_type == SHT_GNU_verneed
6346 || ihdr->sh_type == SHT_GNU_verdef)
6347 ohdr->sh_info = ihdr->sh_info;
6349 return _bfd_elf_init_private_section_data (ibfd, isec, obfd, osec,
6353 /* Look at all the SHT_GROUP sections in IBFD, making any adjustments
6354 necessary if we are removing either the SHT_GROUP section or any of
6355 the group member sections. DISCARDED is the value that a section's
6356 output_section has if the section will be discarded, NULL when this
6357 function is called from objcopy, bfd_abs_section_ptr when called
6361 _bfd_elf_fixup_group_sections (bfd *ibfd, asection *discarded)
6365 for (isec = ibfd->sections; isec != NULL; isec = isec->next)
6366 if (elf_section_type (isec) == SHT_GROUP)
6368 asection *first = elf_next_in_group (isec);
6369 asection *s = first;
6370 bfd_size_type removed = 0;
6374 /* If this member section is being output but the
6375 SHT_GROUP section is not, then clear the group info
6376 set up by _bfd_elf_copy_private_section_data. */
6377 if (s->output_section != discarded
6378 && isec->output_section == discarded)
6380 elf_section_flags (s->output_section) &= ~SHF_GROUP;
6381 elf_group_name (s->output_section) = NULL;
6383 /* Conversely, if the member section is not being output
6384 but the SHT_GROUP section is, then adjust its size. */
6385 else if (s->output_section == discarded
6386 && isec->output_section != discarded)
6388 s = elf_next_in_group (s);
6394 if (discarded != NULL)
6396 /* If we've been called for ld -r, then we need to
6397 adjust the input section size. This function may
6398 be called multiple times, so save the original
6400 if (isec->rawsize == 0)
6401 isec->rawsize = isec->size;
6402 isec->size = isec->rawsize - removed;
6406 /* Adjust the output section size when called from
6408 isec->output_section->size -= removed;
6416 /* Copy private header information. */
6419 _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd)
6421 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
6422 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
6425 /* Copy over private BFD data if it has not already been copied.
6426 This must be done here, rather than in the copy_private_bfd_data
6427 entry point, because the latter is called after the section
6428 contents have been set, which means that the program headers have
6429 already been worked out. */
6430 if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL)
6432 if (! copy_private_bfd_data (ibfd, obfd))
6436 return _bfd_elf_fixup_group_sections (ibfd, NULL);
6439 /* Copy private symbol information. If this symbol is in a section
6440 which we did not map into a BFD section, try to map the section
6441 index correctly. We use special macro definitions for the mapped
6442 section indices; these definitions are interpreted by the
6443 swap_out_syms function. */
6445 #define MAP_ONESYMTAB (SHN_HIOS + 1)
6446 #define MAP_DYNSYMTAB (SHN_HIOS + 2)
6447 #define MAP_STRTAB (SHN_HIOS + 3)
6448 #define MAP_SHSTRTAB (SHN_HIOS + 4)
6449 #define MAP_SYM_SHNDX (SHN_HIOS + 5)
6452 _bfd_elf_copy_private_symbol_data (bfd *ibfd,
6457 elf_symbol_type *isym, *osym;
6459 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
6460 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
6463 isym = elf_symbol_from (ibfd, isymarg);
6464 osym = elf_symbol_from (obfd, osymarg);
6467 && isym->internal_elf_sym.st_shndx != 0
6469 && bfd_is_abs_section (isym->symbol.section))
6473 shndx = isym->internal_elf_sym.st_shndx;
6474 if (shndx == elf_onesymtab (ibfd))
6475 shndx = MAP_ONESYMTAB;
6476 else if (shndx == elf_dynsymtab (ibfd))
6477 shndx = MAP_DYNSYMTAB;
6478 else if (shndx == elf_tdata (ibfd)->strtab_section)
6480 else if (shndx == elf_tdata (ibfd)->shstrtab_section)
6481 shndx = MAP_SHSTRTAB;
6482 else if (shndx == elf_tdata (ibfd)->symtab_shndx_section)
6483 shndx = MAP_SYM_SHNDX;
6484 osym->internal_elf_sym.st_shndx = shndx;
6490 /* Swap out the symbols. */
6493 swap_out_syms (bfd *abfd,
6494 struct bfd_strtab_hash **sttp,
6497 const struct elf_backend_data *bed;
6500 struct bfd_strtab_hash *stt;
6501 Elf_Internal_Shdr *symtab_hdr;
6502 Elf_Internal_Shdr *symtab_shndx_hdr;
6503 Elf_Internal_Shdr *symstrtab_hdr;
6504 bfd_byte *outbound_syms;
6505 bfd_byte *outbound_shndx;
6508 bfd_boolean name_local_sections;
6510 if (!elf_map_symbols (abfd))
6513 /* Dump out the symtabs. */
6514 stt = _bfd_elf_stringtab_init ();
6518 bed = get_elf_backend_data (abfd);
6519 symcount = bfd_get_symcount (abfd);
6520 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
6521 symtab_hdr->sh_type = SHT_SYMTAB;
6522 symtab_hdr->sh_entsize = bed->s->sizeof_sym;
6523 symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1);
6524 symtab_hdr->sh_info = elf_num_locals (abfd) + 1;
6525 symtab_hdr->sh_addralign = (bfd_vma) 1 << bed->s->log_file_align;
6527 symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr;
6528 symstrtab_hdr->sh_type = SHT_STRTAB;
6530 outbound_syms = (bfd_byte *) bfd_alloc2 (abfd, 1 + symcount,
6531 bed->s->sizeof_sym);
6532 if (outbound_syms == NULL)
6534 _bfd_stringtab_free (stt);
6537 symtab_hdr->contents = outbound_syms;
6539 outbound_shndx = NULL;
6540 symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
6541 if (symtab_shndx_hdr->sh_name != 0)
6543 amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx);
6544 outbound_shndx = (bfd_byte *)
6545 bfd_zalloc2 (abfd, 1 + symcount, sizeof (Elf_External_Sym_Shndx));
6546 if (outbound_shndx == NULL)
6548 _bfd_stringtab_free (stt);
6552 symtab_shndx_hdr->contents = outbound_shndx;
6553 symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX;
6554 symtab_shndx_hdr->sh_size = amt;
6555 symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx);
6556 symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx);
6559 /* Now generate the data (for "contents"). */
6561 /* Fill in zeroth symbol and swap it out. */
6562 Elf_Internal_Sym sym;
6568 sym.st_shndx = SHN_UNDEF;
6569 sym.st_target_internal = 0;
6570 bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx);
6571 outbound_syms += bed->s->sizeof_sym;
6572 if (outbound_shndx != NULL)
6573 outbound_shndx += sizeof (Elf_External_Sym_Shndx);
6577 = (bed->elf_backend_name_local_section_symbols
6578 && bed->elf_backend_name_local_section_symbols (abfd));
6580 syms = bfd_get_outsymbols (abfd);
6581 for (idx = 0; idx < symcount; idx++)
6583 Elf_Internal_Sym sym;
6584 bfd_vma value = syms[idx]->value;
6585 elf_symbol_type *type_ptr;
6586 flagword flags = syms[idx]->flags;
6589 if (!name_local_sections
6590 && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM)
6592 /* Local section symbols have no name. */
6597 sym.st_name = (unsigned long) _bfd_stringtab_add (stt,
6600 if (sym.st_name == (unsigned long) -1)
6602 _bfd_stringtab_free (stt);
6607 type_ptr = elf_symbol_from (abfd, syms[idx]);
6609 if ((flags & BSF_SECTION_SYM) == 0
6610 && bfd_is_com_section (syms[idx]->section))
6612 /* ELF common symbols put the alignment into the `value' field,
6613 and the size into the `size' field. This is backwards from
6614 how BFD handles it, so reverse it here. */
6615 sym.st_size = value;
6616 if (type_ptr == NULL
6617 || type_ptr->internal_elf_sym.st_value == 0)
6618 sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value));
6620 sym.st_value = type_ptr->internal_elf_sym.st_value;
6621 sym.st_shndx = _bfd_elf_section_from_bfd_section
6622 (abfd, syms[idx]->section);
6626 asection *sec = syms[idx]->section;
6629 if (sec->output_section)
6631 value += sec->output_offset;
6632 sec = sec->output_section;
6635 /* Don't add in the section vma for relocatable output. */
6636 if (! relocatable_p)
6638 sym.st_value = value;
6639 sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0;
6641 if (bfd_is_abs_section (sec)
6643 && type_ptr->internal_elf_sym.st_shndx != 0)
6645 /* This symbol is in a real ELF section which we did
6646 not create as a BFD section. Undo the mapping done
6647 by copy_private_symbol_data. */
6648 shndx = type_ptr->internal_elf_sym.st_shndx;
6652 shndx = elf_onesymtab (abfd);
6655 shndx = elf_dynsymtab (abfd);
6658 shndx = elf_tdata (abfd)->strtab_section;
6661 shndx = elf_tdata (abfd)->shstrtab_section;
6664 shndx = elf_tdata (abfd)->symtab_shndx_section;
6672 shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
6674 if (shndx == SHN_BAD)
6678 /* Writing this would be a hell of a lot easier if
6679 we had some decent documentation on bfd, and
6680 knew what to expect of the library, and what to
6681 demand of applications. For example, it
6682 appears that `objcopy' might not set the
6683 section of a symbol to be a section that is
6684 actually in the output file. */
6685 sec2 = bfd_get_section_by_name (abfd, sec->name);
6688 _bfd_error_handler (_("\
6689 Unable to find equivalent output section for symbol '%s' from section '%s'"),
6690 syms[idx]->name ? syms[idx]->name : "<Local sym>",
6692 bfd_set_error (bfd_error_invalid_operation);
6693 _bfd_stringtab_free (stt);
6697 shndx = _bfd_elf_section_from_bfd_section (abfd, sec2);
6698 BFD_ASSERT (shndx != SHN_BAD);
6702 sym.st_shndx = shndx;
6705 if ((flags & BSF_THREAD_LOCAL) != 0)
6707 else if ((flags & BSF_GNU_INDIRECT_FUNCTION) != 0)
6708 type = STT_GNU_IFUNC;
6709 else if ((flags & BSF_FUNCTION) != 0)
6711 else if ((flags & BSF_OBJECT) != 0)
6713 else if ((flags & BSF_RELC) != 0)
6715 else if ((flags & BSF_SRELC) != 0)
6720 if (syms[idx]->section->flags & SEC_THREAD_LOCAL)
6723 /* Processor-specific types. */
6724 if (type_ptr != NULL
6725 && bed->elf_backend_get_symbol_type)
6726 type = ((*bed->elf_backend_get_symbol_type)
6727 (&type_ptr->internal_elf_sym, type));
6729 if (flags & BSF_SECTION_SYM)
6731 if (flags & BSF_GLOBAL)
6732 sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
6734 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
6736 else if (bfd_is_com_section (syms[idx]->section))
6738 #ifdef USE_STT_COMMON
6739 if (type == STT_OBJECT)
6740 sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_COMMON);
6743 sym.st_info = ELF_ST_INFO (STB_GLOBAL, type);
6745 else if (bfd_is_und_section (syms[idx]->section))
6746 sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK)
6750 else if (flags & BSF_FILE)
6751 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE);
6754 int bind = STB_LOCAL;
6756 if (flags & BSF_LOCAL)
6758 else if (flags & BSF_GNU_UNIQUE)
6759 bind = STB_GNU_UNIQUE;
6760 else if (flags & BSF_WEAK)
6762 else if (flags & BSF_GLOBAL)
6765 sym.st_info = ELF_ST_INFO (bind, type);
6768 if (type_ptr != NULL)
6770 sym.st_other = type_ptr->internal_elf_sym.st_other;
6771 sym.st_target_internal
6772 = type_ptr->internal_elf_sym.st_target_internal;
6777 sym.st_target_internal = 0;
6780 bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx);
6781 outbound_syms += bed->s->sizeof_sym;
6782 if (outbound_shndx != NULL)
6783 outbound_shndx += sizeof (Elf_External_Sym_Shndx);
6787 symstrtab_hdr->sh_size = _bfd_stringtab_size (stt);
6788 symstrtab_hdr->sh_type = SHT_STRTAB;
6790 symstrtab_hdr->sh_flags = 0;
6791 symstrtab_hdr->sh_addr = 0;
6792 symstrtab_hdr->sh_entsize = 0;
6793 symstrtab_hdr->sh_link = 0;
6794 symstrtab_hdr->sh_info = 0;
6795 symstrtab_hdr->sh_addralign = 1;
6800 /* Return the number of bytes required to hold the symtab vector.
6802 Note that we base it on the count plus 1, since we will null terminate
6803 the vector allocated based on this size. However, the ELF symbol table
6804 always has a dummy entry as symbol #0, so it ends up even. */
6807 _bfd_elf_get_symtab_upper_bound (bfd *abfd)
6811 Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr;
6813 symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym;
6814 symtab_size = (symcount + 1) * (sizeof (asymbol *));
6816 symtab_size -= sizeof (asymbol *);
6822 _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd)
6826 Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr;
6828 if (elf_dynsymtab (abfd) == 0)
6830 bfd_set_error (bfd_error_invalid_operation);
6834 symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym;
6835 symtab_size = (symcount + 1) * (sizeof (asymbol *));
6837 symtab_size -= sizeof (asymbol *);
6843 _bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED,
6846 return (asect->reloc_count + 1) * sizeof (arelent *);
6849 /* Canonicalize the relocs. */
6852 _bfd_elf_canonicalize_reloc (bfd *abfd,
6859 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
6861 if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE))
6864 tblptr = section->relocation;
6865 for (i = 0; i < section->reloc_count; i++)
6866 *relptr++ = tblptr++;
6870 return section->reloc_count;
6874 _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation)
6876 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
6877 long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE);
6880 bfd_get_symcount (abfd) = symcount;
6885 _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd,
6886 asymbol **allocation)
6888 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
6889 long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE);
6892 bfd_get_dynamic_symcount (abfd) = symcount;
6896 /* Return the size required for the dynamic reloc entries. Any loadable
6897 section that was actually installed in the BFD, and has type SHT_REL
6898 or SHT_RELA, and uses the dynamic symbol table, is considered to be a
6899 dynamic reloc section. */
6902 _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd)
6907 if (elf_dynsymtab (abfd) == 0)
6909 bfd_set_error (bfd_error_invalid_operation);
6913 ret = sizeof (arelent *);
6914 for (s = abfd->sections; s != NULL; s = s->next)
6915 if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
6916 && (elf_section_data (s)->this_hdr.sh_type == SHT_REL
6917 || elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
6918 ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize)
6919 * sizeof (arelent *));
6924 /* Canonicalize the dynamic relocation entries. Note that we return the
6925 dynamic relocations as a single block, although they are actually
6926 associated with particular sections; the interface, which was
6927 designed for SunOS style shared libraries, expects that there is only
6928 one set of dynamic relocs. Any loadable section that was actually
6929 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the
6930 dynamic symbol table, is considered to be a dynamic reloc section. */
6933 _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd,
6937 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
6941 if (elf_dynsymtab (abfd) == 0)
6943 bfd_set_error (bfd_error_invalid_operation);
6947 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
6949 for (s = abfd->sections; s != NULL; s = s->next)
6951 if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
6952 && (elf_section_data (s)->this_hdr.sh_type == SHT_REL
6953 || elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
6958 if (! (*slurp_relocs) (abfd, s, syms, TRUE))
6960 count = s->size / elf_section_data (s)->this_hdr.sh_entsize;
6962 for (i = 0; i < count; i++)
6973 /* Read in the version information. */
6976 _bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver)
6978 bfd_byte *contents = NULL;
6979 unsigned int freeidx = 0;
6981 if (elf_dynverref (abfd) != 0)
6983 Elf_Internal_Shdr *hdr;
6984 Elf_External_Verneed *everneed;
6985 Elf_Internal_Verneed *iverneed;
6987 bfd_byte *contents_end;
6989 hdr = &elf_tdata (abfd)->dynverref_hdr;
6991 elf_tdata (abfd)->verref = (Elf_Internal_Verneed *)
6992 bfd_zalloc2 (abfd, hdr->sh_info, sizeof (Elf_Internal_Verneed));
6993 if (elf_tdata (abfd)->verref == NULL)
6996 elf_tdata (abfd)->cverrefs = hdr->sh_info;
6998 contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
6999 if (contents == NULL)
7001 error_return_verref:
7002 elf_tdata (abfd)->verref = NULL;
7003 elf_tdata (abfd)->cverrefs = 0;
7006 if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
7007 || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size)
7008 goto error_return_verref;
7010 if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verneed))
7011 goto error_return_verref;
7013 BFD_ASSERT (sizeof (Elf_External_Verneed)
7014 == sizeof (Elf_External_Vernaux));
7015 contents_end = contents + hdr->sh_size - sizeof (Elf_External_Verneed);
7016 everneed = (Elf_External_Verneed *) contents;
7017 iverneed = elf_tdata (abfd)->verref;
7018 for (i = 0; i < hdr->sh_info; i++, iverneed++)
7020 Elf_External_Vernaux *evernaux;
7021 Elf_Internal_Vernaux *ivernaux;
7024 _bfd_elf_swap_verneed_in (abfd, everneed, iverneed);
7026 iverneed->vn_bfd = abfd;
7028 iverneed->vn_filename =
7029 bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
7031 if (iverneed->vn_filename == NULL)
7032 goto error_return_verref;
7034 if (iverneed->vn_cnt == 0)
7035 iverneed->vn_auxptr = NULL;
7038 iverneed->vn_auxptr = (struct elf_internal_vernaux *)
7039 bfd_alloc2 (abfd, iverneed->vn_cnt,
7040 sizeof (Elf_Internal_Vernaux));
7041 if (iverneed->vn_auxptr == NULL)
7042 goto error_return_verref;
7045 if (iverneed->vn_aux
7046 > (size_t) (contents_end - (bfd_byte *) everneed))
7047 goto error_return_verref;
7049 evernaux = ((Elf_External_Vernaux *)
7050 ((bfd_byte *) everneed + iverneed->vn_aux));
7051 ivernaux = iverneed->vn_auxptr;
7052 for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++)
7054 _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux);
7056 ivernaux->vna_nodename =
7057 bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
7058 ivernaux->vna_name);
7059 if (ivernaux->vna_nodename == NULL)
7060 goto error_return_verref;
7062 if (j + 1 < iverneed->vn_cnt)
7063 ivernaux->vna_nextptr = ivernaux + 1;
7065 ivernaux->vna_nextptr = NULL;
7067 if (ivernaux->vna_next
7068 > (size_t) (contents_end - (bfd_byte *) evernaux))
7069 goto error_return_verref;
7071 evernaux = ((Elf_External_Vernaux *)
7072 ((bfd_byte *) evernaux + ivernaux->vna_next));
7074 if (ivernaux->vna_other > freeidx)
7075 freeidx = ivernaux->vna_other;
7078 if (i + 1 < hdr->sh_info)
7079 iverneed->vn_nextref = iverneed + 1;
7081 iverneed->vn_nextref = NULL;
7083 if (iverneed->vn_next
7084 > (size_t) (contents_end - (bfd_byte *) everneed))
7085 goto error_return_verref;
7087 everneed = ((Elf_External_Verneed *)
7088 ((bfd_byte *) everneed + iverneed->vn_next));
7095 if (elf_dynverdef (abfd) != 0)
7097 Elf_Internal_Shdr *hdr;
7098 Elf_External_Verdef *everdef;
7099 Elf_Internal_Verdef *iverdef;
7100 Elf_Internal_Verdef *iverdefarr;
7101 Elf_Internal_Verdef iverdefmem;
7103 unsigned int maxidx;
7104 bfd_byte *contents_end_def, *contents_end_aux;
7106 hdr = &elf_tdata (abfd)->dynverdef_hdr;
7108 contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
7109 if (contents == NULL)
7111 if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
7112 || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size)
7115 if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verdef))
7118 BFD_ASSERT (sizeof (Elf_External_Verdef)
7119 >= sizeof (Elf_External_Verdaux));
7120 contents_end_def = contents + hdr->sh_size
7121 - sizeof (Elf_External_Verdef);
7122 contents_end_aux = contents + hdr->sh_size
7123 - sizeof (Elf_External_Verdaux);
7125 /* We know the number of entries in the section but not the maximum
7126 index. Therefore we have to run through all entries and find
7128 everdef = (Elf_External_Verdef *) contents;
7130 for (i = 0; i < hdr->sh_info; ++i)
7132 _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem);
7134 if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx)
7135 maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION);
7137 if (iverdefmem.vd_next
7138 > (size_t) (contents_end_def - (bfd_byte *) everdef))
7141 everdef = ((Elf_External_Verdef *)
7142 ((bfd_byte *) everdef + iverdefmem.vd_next));
7145 if (default_imported_symver)
7147 if (freeidx > maxidx)
7152 elf_tdata (abfd)->verdef = (Elf_Internal_Verdef *)
7153 bfd_zalloc2 (abfd, maxidx, sizeof (Elf_Internal_Verdef));
7154 if (elf_tdata (abfd)->verdef == NULL)
7157 elf_tdata (abfd)->cverdefs = maxidx;
7159 everdef = (Elf_External_Verdef *) contents;
7160 iverdefarr = elf_tdata (abfd)->verdef;
7161 for (i = 0; i < hdr->sh_info; i++)
7163 Elf_External_Verdaux *everdaux;
7164 Elf_Internal_Verdaux *iverdaux;
7167 _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem);
7169 if ((iverdefmem.vd_ndx & VERSYM_VERSION) == 0)
7171 error_return_verdef:
7172 elf_tdata (abfd)->verdef = NULL;
7173 elf_tdata (abfd)->cverdefs = 0;
7177 iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1];
7178 memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef));
7180 iverdef->vd_bfd = abfd;
7182 if (iverdef->vd_cnt == 0)
7183 iverdef->vd_auxptr = NULL;
7186 iverdef->vd_auxptr = (struct elf_internal_verdaux *)
7187 bfd_alloc2 (abfd, iverdef->vd_cnt,
7188 sizeof (Elf_Internal_Verdaux));
7189 if (iverdef->vd_auxptr == NULL)
7190 goto error_return_verdef;
7194 > (size_t) (contents_end_aux - (bfd_byte *) everdef))
7195 goto error_return_verdef;
7197 everdaux = ((Elf_External_Verdaux *)
7198 ((bfd_byte *) everdef + iverdef->vd_aux));
7199 iverdaux = iverdef->vd_auxptr;
7200 for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++)
7202 _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux);
7204 iverdaux->vda_nodename =
7205 bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
7206 iverdaux->vda_name);
7207 if (iverdaux->vda_nodename == NULL)
7208 goto error_return_verdef;
7210 if (j + 1 < iverdef->vd_cnt)
7211 iverdaux->vda_nextptr = iverdaux + 1;
7213 iverdaux->vda_nextptr = NULL;
7215 if (iverdaux->vda_next
7216 > (size_t) (contents_end_aux - (bfd_byte *) everdaux))
7217 goto error_return_verdef;
7219 everdaux = ((Elf_External_Verdaux *)
7220 ((bfd_byte *) everdaux + iverdaux->vda_next));
7223 if (iverdef->vd_cnt)
7224 iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename;
7226 if ((size_t) (iverdef - iverdefarr) + 1 < maxidx)
7227 iverdef->vd_nextdef = iverdef + 1;
7229 iverdef->vd_nextdef = NULL;
7231 everdef = ((Elf_External_Verdef *)
7232 ((bfd_byte *) everdef + iverdef->vd_next));
7238 else if (default_imported_symver)
7245 elf_tdata (abfd)->verdef = (Elf_Internal_Verdef *)
7246 bfd_zalloc2 (abfd, freeidx, sizeof (Elf_Internal_Verdef));
7247 if (elf_tdata (abfd)->verdef == NULL)
7250 elf_tdata (abfd)->cverdefs = freeidx;
7253 /* Create a default version based on the soname. */
7254 if (default_imported_symver)
7256 Elf_Internal_Verdef *iverdef;
7257 Elf_Internal_Verdaux *iverdaux;
7259 iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];;
7261 iverdef->vd_version = VER_DEF_CURRENT;
7262 iverdef->vd_flags = 0;
7263 iverdef->vd_ndx = freeidx;
7264 iverdef->vd_cnt = 1;
7266 iverdef->vd_bfd = abfd;
7268 iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd);
7269 if (iverdef->vd_nodename == NULL)
7270 goto error_return_verdef;
7271 iverdef->vd_nextdef = NULL;
7272 iverdef->vd_auxptr = (struct elf_internal_verdaux *)
7273 bfd_alloc (abfd, sizeof (Elf_Internal_Verdaux));
7274 if (iverdef->vd_auxptr == NULL)
7275 goto error_return_verdef;
7277 iverdaux = iverdef->vd_auxptr;
7278 iverdaux->vda_nodename = iverdef->vd_nodename;
7279 iverdaux->vda_nextptr = NULL;
7285 if (contents != NULL)
7291 _bfd_elf_make_empty_symbol (bfd *abfd)
7293 elf_symbol_type *newsym;
7294 bfd_size_type amt = sizeof (elf_symbol_type);
7296 newsym = (elf_symbol_type *) bfd_zalloc (abfd, amt);
7301 newsym->symbol.the_bfd = abfd;
7302 return &newsym->symbol;
7307 _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
7311 bfd_symbol_info (symbol, ret);
7314 /* Return whether a symbol name implies a local symbol. Most targets
7315 use this function for the is_local_label_name entry point, but some
7319 _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
7322 /* Normal local symbols start with ``.L''. */
7323 if (name[0] == '.' && name[1] == 'L')
7326 /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate
7327 DWARF debugging symbols starting with ``..''. */
7328 if (name[0] == '.' && name[1] == '.')
7331 /* gcc will sometimes generate symbols beginning with ``_.L_'' when
7332 emitting DWARF debugging output. I suspect this is actually a
7333 small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call
7334 ASM_GENERATE_INTERNAL_LABEL, and this causes the leading
7335 underscore to be emitted on some ELF targets). For ease of use,
7336 we treat such symbols as local. */
7337 if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_')
7344 _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED,
7345 asymbol *symbol ATTRIBUTE_UNUSED)
7352 _bfd_elf_set_arch_mach (bfd *abfd,
7353 enum bfd_architecture arch,
7354 unsigned long machine)
7356 /* If this isn't the right architecture for this backend, and this
7357 isn't the generic backend, fail. */
7358 if (arch != get_elf_backend_data (abfd)->arch
7359 && arch != bfd_arch_unknown
7360 && get_elf_backend_data (abfd)->arch != bfd_arch_unknown)
7363 return bfd_default_set_arch_mach (abfd, arch, machine);
7366 /* Find the function to a particular section and offset,
7367 for error reporting. */
7370 elf_find_function (bfd *abfd,
7374 const char **filename_ptr,
7375 const char **functionname_ptr)
7377 const char *filename;
7378 asymbol *func, *file;
7381 /* ??? Given multiple file symbols, it is impossible to reliably
7382 choose the right file name for global symbols. File symbols are
7383 local symbols, and thus all file symbols must sort before any
7384 global symbols. The ELF spec may be interpreted to say that a
7385 file symbol must sort before other local symbols, but currently
7386 ld -r doesn't do this. So, for ld -r output, it is possible to
7387 make a better choice of file name for local symbols by ignoring
7388 file symbols appearing after a given local symbol. */
7389 enum { nothing_seen, symbol_seen, file_after_symbol_seen } state;
7390 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
7396 state = nothing_seen;
7398 for (p = symbols; *p != NULL; p++)
7403 q = (elf_symbol_type *) *p;
7405 type = ELF_ST_TYPE (q->internal_elf_sym.st_info);
7410 if (state == symbol_seen)
7411 state = file_after_symbol_seen;
7414 if (!bed->is_function_type (type))
7417 if (bfd_get_section (&q->symbol) == section
7418 && q->symbol.value >= low_func
7419 && q->symbol.value <= offset)
7421 func = (asymbol *) q;
7422 low_func = q->symbol.value;
7425 && (ELF_ST_BIND (q->internal_elf_sym.st_info) == STB_LOCAL
7426 || state != file_after_symbol_seen))
7427 filename = bfd_asymbol_name (file);
7431 if (state == nothing_seen)
7432 state = symbol_seen;
7439 *filename_ptr = filename;
7440 if (functionname_ptr)
7441 *functionname_ptr = bfd_asymbol_name (func);
7446 /* Find the nearest line to a particular section and offset,
7447 for error reporting. */
7450 _bfd_elf_find_nearest_line (bfd *abfd,
7454 const char **filename_ptr,
7455 const char **functionname_ptr,
7456 unsigned int *line_ptr)
7460 if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset,
7461 filename_ptr, functionname_ptr,
7464 if (!*functionname_ptr)
7465 elf_find_function (abfd, section, symbols, offset,
7466 *filename_ptr ? NULL : filename_ptr,
7472 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
7473 filename_ptr, functionname_ptr,
7475 &elf_tdata (abfd)->dwarf2_find_line_info))
7477 if (!*functionname_ptr)
7478 elf_find_function (abfd, section, symbols, offset,
7479 *filename_ptr ? NULL : filename_ptr,
7485 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
7486 &found, filename_ptr,
7487 functionname_ptr, line_ptr,
7488 &elf_tdata (abfd)->line_info))
7490 if (found && (*functionname_ptr || *line_ptr))
7493 if (symbols == NULL)
7496 if (! elf_find_function (abfd, section, symbols, offset,
7497 filename_ptr, functionname_ptr))
7504 /* Find the line for a symbol. */
7507 _bfd_elf_find_line (bfd *abfd, asymbol **symbols, asymbol *symbol,
7508 const char **filename_ptr, unsigned int *line_ptr)
7510 return _bfd_dwarf2_find_line (abfd, symbols, symbol,
7511 filename_ptr, line_ptr, 0,
7512 &elf_tdata (abfd)->dwarf2_find_line_info);
7515 /* After a call to bfd_find_nearest_line, successive calls to
7516 bfd_find_inliner_info can be used to get source information about
7517 each level of function inlining that terminated at the address
7518 passed to bfd_find_nearest_line. Currently this is only supported
7519 for DWARF2 with appropriate DWARF3 extensions. */
7522 _bfd_elf_find_inliner_info (bfd *abfd,
7523 const char **filename_ptr,
7524 const char **functionname_ptr,
7525 unsigned int *line_ptr)
7528 found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
7529 functionname_ptr, line_ptr,
7530 & elf_tdata (abfd)->dwarf2_find_line_info);
7535 _bfd_elf_sizeof_headers (bfd *abfd, struct bfd_link_info *info)
7537 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
7538 int ret = bed->s->sizeof_ehdr;
7540 if (!info->relocatable)
7542 bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size;
7544 if (phdr_size == (bfd_size_type) -1)
7546 struct elf_segment_map *m;
7549 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
7550 phdr_size += bed->s->sizeof_phdr;
7553 phdr_size = get_program_header_size (abfd, info);
7556 elf_tdata (abfd)->program_header_size = phdr_size;
7564 _bfd_elf_set_section_contents (bfd *abfd,
7566 const void *location,
7568 bfd_size_type count)
7570 Elf_Internal_Shdr *hdr;
7573 if (! abfd->output_has_begun
7574 && ! _bfd_elf_compute_section_file_positions (abfd, NULL))
7577 hdr = &elf_section_data (section)->this_hdr;
7578 pos = hdr->sh_offset + offset;
7579 if (bfd_seek (abfd, pos, SEEK_SET) != 0
7580 || bfd_bwrite (location, count, abfd) != count)
7587 _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
7588 arelent *cache_ptr ATTRIBUTE_UNUSED,
7589 Elf_Internal_Rela *dst ATTRIBUTE_UNUSED)
7594 /* Try to convert a non-ELF reloc into an ELF one. */
7597 _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc)
7599 /* Check whether we really have an ELF howto. */
7601 if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec)
7603 bfd_reloc_code_real_type code;
7604 reloc_howto_type *howto;
7606 /* Alien reloc: Try to determine its type to replace it with an
7607 equivalent ELF reloc. */
7609 if (areloc->howto->pc_relative)
7611 switch (areloc->howto->bitsize)
7614 code = BFD_RELOC_8_PCREL;
7617 code = BFD_RELOC_12_PCREL;
7620 code = BFD_RELOC_16_PCREL;
7623 code = BFD_RELOC_24_PCREL;
7626 code = BFD_RELOC_32_PCREL;
7629 code = BFD_RELOC_64_PCREL;
7635 howto = bfd_reloc_type_lookup (abfd, code);
7637 if (areloc->howto->pcrel_offset != howto->pcrel_offset)
7639 if (howto->pcrel_offset)
7640 areloc->addend += areloc->address;
7642 areloc->addend -= areloc->address; /* addend is unsigned!! */
7647 switch (areloc->howto->bitsize)
7653 code = BFD_RELOC_14;
7656 code = BFD_RELOC_16;
7659 code = BFD_RELOC_26;
7662 code = BFD_RELOC_32;
7665 code = BFD_RELOC_64;
7671 howto = bfd_reloc_type_lookup (abfd, code);
7675 areloc->howto = howto;
7683 (*_bfd_error_handler)
7684 (_("%B: unsupported relocation type %s"),
7685 abfd, areloc->howto->name);
7686 bfd_set_error (bfd_error_bad_value);
7691 _bfd_elf_close_and_cleanup (bfd *abfd)
7693 if (bfd_get_format (abfd) == bfd_object)
7695 if (elf_tdata (abfd) != NULL && elf_shstrtab (abfd) != NULL)
7696 _bfd_elf_strtab_free (elf_shstrtab (abfd));
7697 _bfd_dwarf2_cleanup_debug_info (abfd);
7700 return _bfd_generic_close_and_cleanup (abfd);
7703 /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY
7704 in the relocation's offset. Thus we cannot allow any sort of sanity
7705 range-checking to interfere. There is nothing else to do in processing
7708 bfd_reloc_status_type
7709 _bfd_elf_rel_vtable_reloc_fn
7710 (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED,
7711 struct bfd_symbol *symbol ATTRIBUTE_UNUSED,
7712 void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED,
7713 bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED)
7715 return bfd_reloc_ok;
7718 /* Elf core file support. Much of this only works on native
7719 toolchains, since we rely on knowing the
7720 machine-dependent procfs structure in order to pick
7721 out details about the corefile. */
7723 #ifdef HAVE_SYS_PROCFS_H
7724 /* Needed for new procfs interface on sparc-solaris. */
7725 # define _STRUCTURED_PROC 1
7726 # include <sys/procfs.h>
7729 /* Return a PID that identifies a "thread" for threaded cores, or the
7730 PID of the main process for non-threaded cores. */
7733 elfcore_make_pid (bfd *abfd)
7737 pid = elf_tdata (abfd)->core_lwpid;
7739 pid = elf_tdata (abfd)->core_pid;
7744 /* If there isn't a section called NAME, make one, using
7745 data from SECT. Note, this function will generate a
7746 reference to NAME, so you shouldn't deallocate or
7750 elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect)
7754 if (bfd_get_section_by_name (abfd, name) != NULL)
7757 sect2 = bfd_make_section_with_flags (abfd, name, sect->flags);
7761 sect2->size = sect->size;
7762 sect2->filepos = sect->filepos;
7763 sect2->alignment_power = sect->alignment_power;
7767 /* Create a pseudosection containing SIZE bytes at FILEPOS. This
7768 actually creates up to two pseudosections:
7769 - For the single-threaded case, a section named NAME, unless
7770 such a section already exists.
7771 - For the multi-threaded case, a section named "NAME/PID", where
7772 PID is elfcore_make_pid (abfd).
7773 Both pseudosections have identical contents. */
7775 _bfd_elfcore_make_pseudosection (bfd *abfd,
7781 char *threaded_name;
7785 /* Build the section name. */
7787 sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd));
7788 len = strlen (buf) + 1;
7789 threaded_name = (char *) bfd_alloc (abfd, len);
7790 if (threaded_name == NULL)
7792 memcpy (threaded_name, buf, len);
7794 sect = bfd_make_section_anyway_with_flags (abfd, threaded_name,
7799 sect->filepos = filepos;
7800 sect->alignment_power = 2;
7802 return elfcore_maybe_make_sect (abfd, name, sect);
7805 /* prstatus_t exists on:
7807 linux 2.[01] + glibc
7811 #if defined (HAVE_PRSTATUS_T)
7814 elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
7819 if (note->descsz == sizeof (prstatus_t))
7823 size = sizeof (prstat.pr_reg);
7824 offset = offsetof (prstatus_t, pr_reg);
7825 memcpy (&prstat, note->descdata, sizeof (prstat));
7827 /* Do not overwrite the core signal if it
7828 has already been set by another thread. */
7829 if (elf_tdata (abfd)->core_signal == 0)
7830 elf_tdata (abfd)->core_signal = prstat.pr_cursig;
7831 if (elf_tdata (abfd)->core_pid == 0)
7832 elf_tdata (abfd)->core_pid = prstat.pr_pid;
7834 /* pr_who exists on:
7837 pr_who doesn't exist on:
7840 #if defined (HAVE_PRSTATUS_T_PR_WHO)
7841 elf_tdata (abfd)->core_lwpid = prstat.pr_who;
7843 elf_tdata (abfd)->core_lwpid = prstat.pr_pid;
7846 #if defined (HAVE_PRSTATUS32_T)
7847 else if (note->descsz == sizeof (prstatus32_t))
7849 /* 64-bit host, 32-bit corefile */
7850 prstatus32_t prstat;
7852 size = sizeof (prstat.pr_reg);
7853 offset = offsetof (prstatus32_t, pr_reg);
7854 memcpy (&prstat, note->descdata, sizeof (prstat));
7856 /* Do not overwrite the core signal if it
7857 has already been set by another thread. */
7858 if (elf_tdata (abfd)->core_signal == 0)
7859 elf_tdata (abfd)->core_signal = prstat.pr_cursig;
7860 if (elf_tdata (abfd)->core_pid == 0)
7861 elf_tdata (abfd)->core_pid = prstat.pr_pid;
7863 /* pr_who exists on:
7866 pr_who doesn't exist on:
7869 #if defined (HAVE_PRSTATUS32_T_PR_WHO)
7870 elf_tdata (abfd)->core_lwpid = prstat.pr_who;
7872 elf_tdata (abfd)->core_lwpid = prstat.pr_pid;
7875 #endif /* HAVE_PRSTATUS32_T */
7878 /* Fail - we don't know how to handle any other
7879 note size (ie. data object type). */
7883 /* Make a ".reg/999" section and a ".reg" section. */
7884 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
7885 size, note->descpos + offset);
7887 #endif /* defined (HAVE_PRSTATUS_T) */
7889 /* Create a pseudosection containing the exact contents of NOTE. */
7891 elfcore_make_note_pseudosection (bfd *abfd,
7893 Elf_Internal_Note *note)
7895 return _bfd_elfcore_make_pseudosection (abfd, name,
7896 note->descsz, note->descpos);
7899 /* There isn't a consistent prfpregset_t across platforms,
7900 but it doesn't matter, because we don't have to pick this
7901 data structure apart. */
7904 elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note)
7906 return elfcore_make_note_pseudosection (abfd, ".reg2", note);
7909 /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note
7910 type of NT_PRXFPREG. Just include the whole note's contents
7914 elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note)
7916 return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note);
7919 /* Linux dumps the Intel XSAVE extended state in a note named "LINUX"
7920 with a note type of NT_X86_XSTATE. Just include the whole note's
7921 contents literally. */
7924 elfcore_grok_xstatereg (bfd *abfd, Elf_Internal_Note *note)
7926 return elfcore_make_note_pseudosection (abfd, ".reg-xstate", note);
7930 elfcore_grok_ppc_vmx (bfd *abfd, Elf_Internal_Note *note)
7932 return elfcore_make_note_pseudosection (abfd, ".reg-ppc-vmx", note);
7936 elfcore_grok_ppc_vsx (bfd *abfd, Elf_Internal_Note *note)
7938 return elfcore_make_note_pseudosection (abfd, ".reg-ppc-vsx", note);
7942 elfcore_grok_s390_high_gprs (bfd *abfd, Elf_Internal_Note *note)
7944 return elfcore_make_note_pseudosection (abfd, ".reg-s390-high-gprs", note);
7948 elfcore_grok_s390_timer (bfd *abfd, Elf_Internal_Note *note)
7950 return elfcore_make_note_pseudosection (abfd, ".reg-s390-timer", note);
7954 elfcore_grok_s390_todcmp (bfd *abfd, Elf_Internal_Note *note)
7956 return elfcore_make_note_pseudosection (abfd, ".reg-s390-todcmp", note);
7960 elfcore_grok_s390_todpreg (bfd *abfd, Elf_Internal_Note *note)
7962 return elfcore_make_note_pseudosection (abfd, ".reg-s390-todpreg", note);
7966 elfcore_grok_s390_ctrs (bfd *abfd, Elf_Internal_Note *note)
7968 return elfcore_make_note_pseudosection (abfd, ".reg-s390-ctrs", note);
7972 elfcore_grok_s390_prefix (bfd *abfd, Elf_Internal_Note *note)
7974 return elfcore_make_note_pseudosection (abfd, ".reg-s390-prefix", note);
7977 #if defined (HAVE_PRPSINFO_T)
7978 typedef prpsinfo_t elfcore_psinfo_t;
7979 #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */
7980 typedef prpsinfo32_t elfcore_psinfo32_t;
7984 #if defined (HAVE_PSINFO_T)
7985 typedef psinfo_t elfcore_psinfo_t;
7986 #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */
7987 typedef psinfo32_t elfcore_psinfo32_t;
7991 /* return a malloc'ed copy of a string at START which is at
7992 most MAX bytes long, possibly without a terminating '\0'.
7993 the copy will always have a terminating '\0'. */
7996 _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max)
7999 char *end = (char *) memchr (start, '\0', max);
8007 dups = (char *) bfd_alloc (abfd, len + 1);
8011 memcpy (dups, start, len);
8017 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
8019 elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
8021 if (note->descsz == sizeof (elfcore_psinfo_t))
8023 elfcore_psinfo_t psinfo;
8025 memcpy (&psinfo, note->descdata, sizeof (psinfo));
8027 #if defined (HAVE_PSINFO_T_PR_PID) || defined (HAVE_PRPSINFO_T_PR_PID)
8028 elf_tdata (abfd)->core_pid = psinfo.pr_pid;
8030 elf_tdata (abfd)->core_program
8031 = _bfd_elfcore_strndup (abfd, psinfo.pr_fname,
8032 sizeof (psinfo.pr_fname));
8034 elf_tdata (abfd)->core_command
8035 = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs,
8036 sizeof (psinfo.pr_psargs));
8038 #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T)
8039 else if (note->descsz == sizeof (elfcore_psinfo32_t))
8041 /* 64-bit host, 32-bit corefile */
8042 elfcore_psinfo32_t psinfo;
8044 memcpy (&psinfo, note->descdata, sizeof (psinfo));
8046 #if defined (HAVE_PSINFO32_T_PR_PID) || defined (HAVE_PRPSINFO32_T_PR_PID)
8047 elf_tdata (abfd)->core_pid = psinfo.pr_pid;
8049 elf_tdata (abfd)->core_program
8050 = _bfd_elfcore_strndup (abfd, psinfo.pr_fname,
8051 sizeof (psinfo.pr_fname));
8053 elf_tdata (abfd)->core_command
8054 = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs,
8055 sizeof (psinfo.pr_psargs));
8061 /* Fail - we don't know how to handle any other
8062 note size (ie. data object type). */
8066 /* Note that for some reason, a spurious space is tacked
8067 onto the end of the args in some (at least one anyway)
8068 implementations, so strip it off if it exists. */
8071 char *command = elf_tdata (abfd)->core_command;
8072 int n = strlen (command);
8074 if (0 < n && command[n - 1] == ' ')
8075 command[n - 1] = '\0';
8080 #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */
8082 #if defined (HAVE_PSTATUS_T)
8084 elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note)
8086 if (note->descsz == sizeof (pstatus_t)
8087 #if defined (HAVE_PXSTATUS_T)
8088 || note->descsz == sizeof (pxstatus_t)
8094 memcpy (&pstat, note->descdata, sizeof (pstat));
8096 elf_tdata (abfd)->core_pid = pstat.pr_pid;
8098 #if defined (HAVE_PSTATUS32_T)
8099 else if (note->descsz == sizeof (pstatus32_t))
8101 /* 64-bit host, 32-bit corefile */
8104 memcpy (&pstat, note->descdata, sizeof (pstat));
8106 elf_tdata (abfd)->core_pid = pstat.pr_pid;
8109 /* Could grab some more details from the "representative"
8110 lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an
8111 NT_LWPSTATUS note, presumably. */
8115 #endif /* defined (HAVE_PSTATUS_T) */
8117 #if defined (HAVE_LWPSTATUS_T)
8119 elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note)
8121 lwpstatus_t lwpstat;
8127 if (note->descsz != sizeof (lwpstat)
8128 #if defined (HAVE_LWPXSTATUS_T)
8129 && note->descsz != sizeof (lwpxstatus_t)
8134 memcpy (&lwpstat, note->descdata, sizeof (lwpstat));
8136 elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid;
8137 /* Do not overwrite the core signal if it has already been set by
8139 if (elf_tdata (abfd)->core_signal == 0)
8140 elf_tdata (abfd)->core_signal = lwpstat.pr_cursig;
8142 /* Make a ".reg/999" section. */
8144 sprintf (buf, ".reg/%d", elfcore_make_pid (abfd));
8145 len = strlen (buf) + 1;
8146 name = bfd_alloc (abfd, len);
8149 memcpy (name, buf, len);
8151 sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS);
8155 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
8156 sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs);
8157 sect->filepos = note->descpos
8158 + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs);
8161 #if defined (HAVE_LWPSTATUS_T_PR_REG)
8162 sect->size = sizeof (lwpstat.pr_reg);
8163 sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg);
8166 sect->alignment_power = 2;
8168 if (!elfcore_maybe_make_sect (abfd, ".reg", sect))
8171 /* Make a ".reg2/999" section */
8173 sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd));
8174 len = strlen (buf) + 1;
8175 name = bfd_alloc (abfd, len);
8178 memcpy (name, buf, len);
8180 sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS);
8184 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
8185 sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs);
8186 sect->filepos = note->descpos
8187 + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs);
8190 #if defined (HAVE_LWPSTATUS_T_PR_FPREG)
8191 sect->size = sizeof (lwpstat.pr_fpreg);
8192 sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg);
8195 sect->alignment_power = 2;
8197 return elfcore_maybe_make_sect (abfd, ".reg2", sect);
8199 #endif /* defined (HAVE_LWPSTATUS_T) */
8202 elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note)
8209 int is_active_thread;
8212 if (note->descsz < 728)
8215 if (! CONST_STRNEQ (note->namedata, "win32"))
8218 type = bfd_get_32 (abfd, note->descdata);
8222 case 1 /* NOTE_INFO_PROCESS */:
8223 /* FIXME: need to add ->core_command. */
8224 /* process_info.pid */
8225 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 8);
8226 /* process_info.signal */
8227 elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 12);
8230 case 2 /* NOTE_INFO_THREAD */:
8231 /* Make a ".reg/999" section. */
8232 /* thread_info.tid */
8233 sprintf (buf, ".reg/%ld", (long) bfd_get_32 (abfd, note->descdata + 8));
8235 len = strlen (buf) + 1;
8236 name = (char *) bfd_alloc (abfd, len);
8240 memcpy (name, buf, len);
8242 sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS);
8246 /* sizeof (thread_info.thread_context) */
8248 /* offsetof (thread_info.thread_context) */
8249 sect->filepos = note->descpos + 12;
8250 sect->alignment_power = 2;
8252 /* thread_info.is_active_thread */
8253 is_active_thread = bfd_get_32 (abfd, note->descdata + 8);
8255 if (is_active_thread)
8256 if (! elfcore_maybe_make_sect (abfd, ".reg", sect))
8260 case 3 /* NOTE_INFO_MODULE */:
8261 /* Make a ".module/xxxxxxxx" section. */
8262 /* module_info.base_address */
8263 base_addr = bfd_get_32 (abfd, note->descdata + 4);
8264 sprintf (buf, ".module/%08lx", (unsigned long) base_addr);
8266 len = strlen (buf) + 1;
8267 name = (char *) bfd_alloc (abfd, len);
8271 memcpy (name, buf, len);
8273 sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS);
8278 sect->size = note->descsz;
8279 sect->filepos = note->descpos;
8280 sect->alignment_power = 2;
8291 elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note)
8293 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
8301 if (bed->elf_backend_grok_prstatus)
8302 if ((*bed->elf_backend_grok_prstatus) (abfd, note))
8304 #if defined (HAVE_PRSTATUS_T)
8305 return elfcore_grok_prstatus (abfd, note);
8310 #if defined (HAVE_PSTATUS_T)
8312 return elfcore_grok_pstatus (abfd, note);
8315 #if defined (HAVE_LWPSTATUS_T)
8317 return elfcore_grok_lwpstatus (abfd, note);
8320 case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */
8321 return elfcore_grok_prfpreg (abfd, note);
8323 case NT_WIN32PSTATUS:
8324 return elfcore_grok_win32pstatus (abfd, note);
8326 case NT_PRXFPREG: /* Linux SSE extension */
8327 if (note->namesz == 6
8328 && strcmp (note->namedata, "LINUX") == 0)
8329 return elfcore_grok_prxfpreg (abfd, note);
8333 case NT_X86_XSTATE: /* Linux XSAVE extension */
8334 if (note->namesz == 6
8335 && strcmp (note->namedata, "LINUX") == 0)
8336 return elfcore_grok_xstatereg (abfd, note);
8341 if (note->namesz == 6
8342 && strcmp (note->namedata, "LINUX") == 0)
8343 return elfcore_grok_ppc_vmx (abfd, note);
8348 if (note->namesz == 6
8349 && strcmp (note->namedata, "LINUX") == 0)
8350 return elfcore_grok_ppc_vsx (abfd, note);
8354 case NT_S390_HIGH_GPRS:
8355 if (note->namesz == 6
8356 && strcmp (note->namedata, "LINUX") == 0)
8357 return elfcore_grok_s390_high_gprs (abfd, note);
8362 if (note->namesz == 6
8363 && strcmp (note->namedata, "LINUX") == 0)
8364 return elfcore_grok_s390_timer (abfd, note);
8368 case NT_S390_TODCMP:
8369 if (note->namesz == 6
8370 && strcmp (note->namedata, "LINUX") == 0)
8371 return elfcore_grok_s390_todcmp (abfd, note);
8375 case NT_S390_TODPREG:
8376 if (note->namesz == 6
8377 && strcmp (note->namedata, "LINUX") == 0)
8378 return elfcore_grok_s390_todpreg (abfd, note);
8383 if (note->namesz == 6
8384 && strcmp (note->namedata, "LINUX") == 0)
8385 return elfcore_grok_s390_ctrs (abfd, note);
8389 case NT_S390_PREFIX:
8390 if (note->namesz == 6
8391 && strcmp (note->namedata, "LINUX") == 0)
8392 return elfcore_grok_s390_prefix (abfd, note);
8398 if (bed->elf_backend_grok_psinfo)
8399 if ((*bed->elf_backend_grok_psinfo) (abfd, note))
8401 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
8402 return elfcore_grok_psinfo (abfd, note);
8409 asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv",
8414 sect->size = note->descsz;
8415 sect->filepos = note->descpos;
8416 sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32;
8424 elfobj_grok_gnu_build_id (bfd *abfd, Elf_Internal_Note *note)
8426 elf_tdata (abfd)->build_id_size = note->descsz;
8427 elf_tdata (abfd)->build_id = (bfd_byte *) bfd_alloc (abfd, note->descsz);
8428 if (elf_tdata (abfd)->build_id == NULL)
8431 memcpy (elf_tdata (abfd)->build_id, note->descdata, note->descsz);
8437 elfobj_grok_gnu_note (bfd *abfd, Elf_Internal_Note *note)
8444 case NT_GNU_BUILD_ID:
8445 return elfobj_grok_gnu_build_id (abfd, note);
8450 elfobj_grok_stapsdt_note_1 (bfd *abfd, Elf_Internal_Note *note)
8452 struct sdt_note *cur =
8453 (struct sdt_note *) bfd_alloc (abfd, sizeof (struct sdt_note)
8456 cur->next = (struct sdt_note *) (elf_tdata (abfd))->sdt_note_head;
8457 cur->size = (bfd_size_type) note->descsz;
8458 memcpy (cur->data, note->descdata, note->descsz);
8460 elf_tdata (abfd)->sdt_note_head = cur;
8466 elfobj_grok_stapsdt_note (bfd *abfd, Elf_Internal_Note *note)
8471 return elfobj_grok_stapsdt_note_1 (abfd, note);
8479 elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp)
8483 cp = strchr (note->namedata, '@');
8486 *lwpidp = atoi(cp + 1);
8493 elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note)
8495 /* Signal number at offset 0x08. */
8496 elf_tdata (abfd)->core_signal
8497 = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08);
8499 /* Process ID at offset 0x50. */
8500 elf_tdata (abfd)->core_pid
8501 = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50);
8503 /* Command name at 0x7c (max 32 bytes, including nul). */
8504 elf_tdata (abfd)->core_command
8505 = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31);
8507 return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo",
8512 elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note)
8516 if (elfcore_netbsd_get_lwpid (note, &lwp))
8517 elf_tdata (abfd)->core_lwpid = lwp;
8519 if (note->type == NT_NETBSDCORE_PROCINFO)
8521 /* NetBSD-specific core "procinfo". Note that we expect to
8522 find this note before any of the others, which is fine,
8523 since the kernel writes this note out first when it
8524 creates a core file. */
8526 return elfcore_grok_netbsd_procinfo (abfd, note);
8529 /* As of Jan 2002 there are no other machine-independent notes
8530 defined for NetBSD core files. If the note type is less
8531 than the start of the machine-dependent note types, we don't
8534 if (note->type < NT_NETBSDCORE_FIRSTMACH)
8538 switch (bfd_get_arch (abfd))
8540 /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and
8541 PT_GETFPREGS == mach+2. */
8543 case bfd_arch_alpha:
8544 case bfd_arch_sparc:
8547 case NT_NETBSDCORE_FIRSTMACH+0:
8548 return elfcore_make_note_pseudosection (abfd, ".reg", note);
8550 case NT_NETBSDCORE_FIRSTMACH+2:
8551 return elfcore_make_note_pseudosection (abfd, ".reg2", note);
8557 /* On all other arch's, PT_GETREGS == mach+1 and
8558 PT_GETFPREGS == mach+3. */
8563 case NT_NETBSDCORE_FIRSTMACH+1:
8564 return elfcore_make_note_pseudosection (abfd, ".reg", note);
8566 case NT_NETBSDCORE_FIRSTMACH+3:
8567 return elfcore_make_note_pseudosection (abfd, ".reg2", note);
8577 elfcore_grok_openbsd_procinfo (bfd *abfd, Elf_Internal_Note *note)
8579 /* Signal number at offset 0x08. */
8580 elf_tdata (abfd)->core_signal
8581 = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08);
8583 /* Process ID at offset 0x20. */
8584 elf_tdata (abfd)->core_pid
8585 = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x20);
8587 /* Command name at 0x48 (max 32 bytes, including nul). */
8588 elf_tdata (abfd)->core_command
8589 = _bfd_elfcore_strndup (abfd, note->descdata + 0x48, 31);
8595 elfcore_grok_openbsd_note (bfd *abfd, Elf_Internal_Note *note)
8597 if (note->type == NT_OPENBSD_PROCINFO)
8598 return elfcore_grok_openbsd_procinfo (abfd, note);
8600 if (note->type == NT_OPENBSD_REGS)
8601 return elfcore_make_note_pseudosection (abfd, ".reg", note);
8603 if (note->type == NT_OPENBSD_FPREGS)
8604 return elfcore_make_note_pseudosection (abfd, ".reg2", note);
8606 if (note->type == NT_OPENBSD_XFPREGS)
8607 return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note);
8609 if (note->type == NT_OPENBSD_AUXV)
8611 asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv",
8616 sect->size = note->descsz;
8617 sect->filepos = note->descpos;
8618 sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32;
8623 if (note->type == NT_OPENBSD_WCOOKIE)
8625 asection *sect = bfd_make_section_anyway_with_flags (abfd, ".wcookie",
8630 sect->size = note->descsz;
8631 sect->filepos = note->descpos;
8632 sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32;
8641 elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, long *tid)
8643 void *ddata = note->descdata;
8650 /* nto_procfs_status 'pid' field is at offset 0. */
8651 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata);
8653 /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */
8654 *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4);
8656 /* nto_procfs_status 'flags' field is at offset 8. */
8657 flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8);
8659 /* nto_procfs_status 'what' field is at offset 14. */
8660 if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0)
8662 elf_tdata (abfd)->core_signal = sig;
8663 elf_tdata (abfd)->core_lwpid = *tid;
8666 /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores
8667 do not come from signals so we make sure we set the current
8668 thread just in case. */
8669 if (flags & 0x00000080)
8670 elf_tdata (abfd)->core_lwpid = *tid;
8672 /* Make a ".qnx_core_status/%d" section. */
8673 sprintf (buf, ".qnx_core_status/%ld", *tid);
8675 name = (char *) bfd_alloc (abfd, strlen (buf) + 1);
8680 sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS);
8684 sect->size = note->descsz;
8685 sect->filepos = note->descpos;
8686 sect->alignment_power = 2;
8688 return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect));
8692 elfcore_grok_nto_regs (bfd *abfd,
8693 Elf_Internal_Note *note,
8701 /* Make a "(base)/%d" section. */
8702 sprintf (buf, "%s/%ld", base, tid);
8704 name = (char *) bfd_alloc (abfd, strlen (buf) + 1);
8709 sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS);
8713 sect->size = note->descsz;
8714 sect->filepos = note->descpos;
8715 sect->alignment_power = 2;
8717 /* This is the current thread. */
8718 if (elf_tdata (abfd)->core_lwpid == tid)
8719 return elfcore_maybe_make_sect (abfd, base, sect);
8724 #define BFD_QNT_CORE_INFO 7
8725 #define BFD_QNT_CORE_STATUS 8
8726 #define BFD_QNT_CORE_GREG 9
8727 #define BFD_QNT_CORE_FPREG 10
8730 elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note)
8732 /* Every GREG section has a STATUS section before it. Store the
8733 tid from the previous call to pass down to the next gregs
8735 static long tid = 1;
8739 case BFD_QNT_CORE_INFO:
8740 return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note);
8741 case BFD_QNT_CORE_STATUS:
8742 return elfcore_grok_nto_status (abfd, note, &tid);
8743 case BFD_QNT_CORE_GREG:
8744 return elfcore_grok_nto_regs (abfd, note, tid, ".reg");
8745 case BFD_QNT_CORE_FPREG:
8746 return elfcore_grok_nto_regs (abfd, note, tid, ".reg2");
8753 elfcore_grok_spu_note (bfd *abfd, Elf_Internal_Note *note)
8759 /* Use note name as section name. */
8761 name = (char *) bfd_alloc (abfd, len);
8764 memcpy (name, note->namedata, len);
8765 name[len - 1] = '\0';
8767 sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS);
8771 sect->size = note->descsz;
8772 sect->filepos = note->descpos;
8773 sect->alignment_power = 1;
8778 /* Function: elfcore_write_note
8781 buffer to hold note, and current size of buffer
8785 size of data for note
8787 Writes note to end of buffer. ELF64 notes are written exactly as
8788 for ELF32, despite the current (as of 2006) ELF gabi specifying
8789 that they ought to have 8-byte namesz and descsz field, and have
8790 8-byte alignment. Other writers, eg. Linux kernel, do the same.
8793 Pointer to realloc'd buffer, *BUFSIZ updated. */
8796 elfcore_write_note (bfd *abfd,
8804 Elf_External_Note *xnp;
8811 namesz = strlen (name) + 1;
8813 newspace = 12 + ((namesz + 3) & -4) + ((size + 3) & -4);
8815 buf = (char *) realloc (buf, *bufsiz + newspace);
8818 dest = buf + *bufsiz;
8819 *bufsiz += newspace;
8820 xnp = (Elf_External_Note *) dest;
8821 H_PUT_32 (abfd, namesz, xnp->namesz);
8822 H_PUT_32 (abfd, size, xnp->descsz);
8823 H_PUT_32 (abfd, type, xnp->type);
8827 memcpy (dest, name, namesz);
8835 memcpy (dest, input, size);
8845 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
8847 elfcore_write_prpsinfo (bfd *abfd,
8853 const char *note_name = "CORE";
8854 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
8856 if (bed->elf_backend_write_core_note != NULL)
8859 ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz,
8860 NT_PRPSINFO, fname, psargs);
8865 #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T)
8866 if (bed->s->elfclass == ELFCLASS32)
8868 #if defined (HAVE_PSINFO32_T)
8870 int note_type = NT_PSINFO;
8873 int note_type = NT_PRPSINFO;
8876 memset (&data, 0, sizeof (data));
8877 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
8878 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
8879 return elfcore_write_note (abfd, buf, bufsiz,
8880 note_name, note_type, &data, sizeof (data));
8885 #if defined (HAVE_PSINFO_T)
8887 int note_type = NT_PSINFO;
8890 int note_type = NT_PRPSINFO;
8893 memset (&data, 0, sizeof (data));
8894 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
8895 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
8896 return elfcore_write_note (abfd, buf, bufsiz,
8897 note_name, note_type, &data, sizeof (data));
8900 #endif /* PSINFO_T or PRPSINFO_T */
8902 #if defined (HAVE_PRSTATUS_T)
8904 elfcore_write_prstatus (bfd *abfd,
8911 const char *note_name = "CORE";
8912 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
8914 if (bed->elf_backend_write_core_note != NULL)
8917 ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz,
8919 pid, cursig, gregs);
8924 #if defined (HAVE_PRSTATUS32_T)
8925 if (bed->s->elfclass == ELFCLASS32)
8927 prstatus32_t prstat;
8929 memset (&prstat, 0, sizeof (prstat));
8930 prstat.pr_pid = pid;
8931 prstat.pr_cursig = cursig;
8932 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
8933 return elfcore_write_note (abfd, buf, bufsiz, note_name,
8934 NT_PRSTATUS, &prstat, sizeof (prstat));
8941 memset (&prstat, 0, sizeof (prstat));
8942 prstat.pr_pid = pid;
8943 prstat.pr_cursig = cursig;
8944 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
8945 return elfcore_write_note (abfd, buf, bufsiz, note_name,
8946 NT_PRSTATUS, &prstat, sizeof (prstat));
8949 #endif /* HAVE_PRSTATUS_T */
8951 #if defined (HAVE_LWPSTATUS_T)
8953 elfcore_write_lwpstatus (bfd *abfd,
8960 lwpstatus_t lwpstat;
8961 const char *note_name = "CORE";
8963 memset (&lwpstat, 0, sizeof (lwpstat));
8964 lwpstat.pr_lwpid = pid >> 16;
8965 lwpstat.pr_cursig = cursig;
8966 #if defined (HAVE_LWPSTATUS_T_PR_REG)
8967 memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg));
8968 #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
8970 memcpy (lwpstat.pr_context.uc_mcontext.gregs,
8971 gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs));
8973 memcpy (lwpstat.pr_context.uc_mcontext.__gregs,
8974 gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs));
8977 return elfcore_write_note (abfd, buf, bufsiz, note_name,
8978 NT_LWPSTATUS, &lwpstat, sizeof (lwpstat));
8980 #endif /* HAVE_LWPSTATUS_T */
8982 #if defined (HAVE_PSTATUS_T)
8984 elfcore_write_pstatus (bfd *abfd,
8988 int cursig ATTRIBUTE_UNUSED,
8989 const void *gregs ATTRIBUTE_UNUSED)
8991 const char *note_name = "CORE";
8992 #if defined (HAVE_PSTATUS32_T)
8993 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
8995 if (bed->s->elfclass == ELFCLASS32)
8999 memset (&pstat, 0, sizeof (pstat));
9000 pstat.pr_pid = pid & 0xffff;
9001 buf = elfcore_write_note (abfd, buf, bufsiz, note_name,
9002 NT_PSTATUS, &pstat, sizeof (pstat));
9010 memset (&pstat, 0, sizeof (pstat));
9011 pstat.pr_pid = pid & 0xffff;
9012 buf = elfcore_write_note (abfd, buf, bufsiz, note_name,
9013 NT_PSTATUS, &pstat, sizeof (pstat));
9017 #endif /* HAVE_PSTATUS_T */
9020 elfcore_write_prfpreg (bfd *abfd,
9026 const char *note_name = "CORE";
9027 return elfcore_write_note (abfd, buf, bufsiz,
9028 note_name, NT_FPREGSET, fpregs, size);
9032 elfcore_write_prxfpreg (bfd *abfd,
9035 const void *xfpregs,
9038 char *note_name = "LINUX";
9039 return elfcore_write_note (abfd, buf, bufsiz,
9040 note_name, NT_PRXFPREG, xfpregs, size);
9044 elfcore_write_xstatereg (bfd *abfd, char *buf, int *bufsiz,
9045 const void *xfpregs, int size)
9047 char *note_name = "LINUX";
9048 return elfcore_write_note (abfd, buf, bufsiz,
9049 note_name, NT_X86_XSTATE, xfpregs, size);
9053 elfcore_write_ppc_vmx (bfd *abfd,
9056 const void *ppc_vmx,
9059 char *note_name = "LINUX";
9060 return elfcore_write_note (abfd, buf, bufsiz,
9061 note_name, NT_PPC_VMX, ppc_vmx, size);
9065 elfcore_write_ppc_vsx (bfd *abfd,
9068 const void *ppc_vsx,
9071 char *note_name = "LINUX";
9072 return elfcore_write_note (abfd, buf, bufsiz,
9073 note_name, NT_PPC_VSX, ppc_vsx, size);
9077 elfcore_write_s390_high_gprs (bfd *abfd,
9080 const void *s390_high_gprs,
9083 char *note_name = "LINUX";
9084 return elfcore_write_note (abfd, buf, bufsiz,
9085 note_name, NT_S390_HIGH_GPRS,
9086 s390_high_gprs, size);
9090 elfcore_write_s390_timer (bfd *abfd,
9093 const void *s390_timer,
9096 char *note_name = "LINUX";
9097 return elfcore_write_note (abfd, buf, bufsiz,
9098 note_name, NT_S390_TIMER, s390_timer, size);
9102 elfcore_write_s390_todcmp (bfd *abfd,
9105 const void *s390_todcmp,
9108 char *note_name = "LINUX";
9109 return elfcore_write_note (abfd, buf, bufsiz,
9110 note_name, NT_S390_TODCMP, s390_todcmp, size);
9114 elfcore_write_s390_todpreg (bfd *abfd,
9117 const void *s390_todpreg,
9120 char *note_name = "LINUX";
9121 return elfcore_write_note (abfd, buf, bufsiz,
9122 note_name, NT_S390_TODPREG, s390_todpreg, size);
9126 elfcore_write_s390_ctrs (bfd *abfd,
9129 const void *s390_ctrs,
9132 char *note_name = "LINUX";
9133 return elfcore_write_note (abfd, buf, bufsiz,
9134 note_name, NT_S390_CTRS, s390_ctrs, size);
9138 elfcore_write_s390_prefix (bfd *abfd,
9141 const void *s390_prefix,
9144 char *note_name = "LINUX";
9145 return elfcore_write_note (abfd, buf, bufsiz,
9146 note_name, NT_S390_PREFIX, s390_prefix, size);
9150 elfcore_write_register_note (bfd *abfd,
9153 const char *section,
9157 if (strcmp (section, ".reg2") == 0)
9158 return elfcore_write_prfpreg (abfd, buf, bufsiz, data, size);
9159 if (strcmp (section, ".reg-xfp") == 0)
9160 return elfcore_write_prxfpreg (abfd, buf, bufsiz, data, size);
9161 if (strcmp (section, ".reg-xstate") == 0)
9162 return elfcore_write_xstatereg (abfd, buf, bufsiz, data, size);
9163 if (strcmp (section, ".reg-ppc-vmx") == 0)
9164 return elfcore_write_ppc_vmx (abfd, buf, bufsiz, data, size);
9165 if (strcmp (section, ".reg-ppc-vsx") == 0)
9166 return elfcore_write_ppc_vsx (abfd, buf, bufsiz, data, size);
9167 if (strcmp (section, ".reg-s390-high-gprs") == 0)
9168 return elfcore_write_s390_high_gprs (abfd, buf, bufsiz, data, size);
9169 if (strcmp (section, ".reg-s390-timer") == 0)
9170 return elfcore_write_s390_timer (abfd, buf, bufsiz, data, size);
9171 if (strcmp (section, ".reg-s390-todcmp") == 0)
9172 return elfcore_write_s390_todcmp (abfd, buf, bufsiz, data, size);
9173 if (strcmp (section, ".reg-s390-todpreg") == 0)
9174 return elfcore_write_s390_todpreg (abfd, buf, bufsiz, data, size);
9175 if (strcmp (section, ".reg-s390-ctrs") == 0)
9176 return elfcore_write_s390_ctrs (abfd, buf, bufsiz, data, size);
9177 if (strcmp (section, ".reg-s390-prefix") == 0)
9178 return elfcore_write_s390_prefix (abfd, buf, bufsiz, data, size);
9183 elf_parse_notes (bfd *abfd, char *buf, size_t size, file_ptr offset)
9188 while (p < buf + size)
9190 /* FIXME: bad alignment assumption. */
9191 Elf_External_Note *xnp = (Elf_External_Note *) p;
9192 Elf_Internal_Note in;
9194 if (offsetof (Elf_External_Note, name) > buf - p + size)
9197 in.type = H_GET_32 (abfd, xnp->type);
9199 in.namesz = H_GET_32 (abfd, xnp->namesz);
9200 in.namedata = xnp->name;
9201 if (in.namesz > buf - in.namedata + size)
9204 in.descsz = H_GET_32 (abfd, xnp->descsz);
9205 in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4);
9206 in.descpos = offset + (in.descdata - buf);
9208 && (in.descdata >= buf + size
9209 || in.descsz > buf - in.descdata + size))
9212 switch (bfd_get_format (abfd))
9218 if (CONST_STRNEQ (in.namedata, "NetBSD-CORE"))
9220 if (! elfcore_grok_netbsd_note (abfd, &in))
9223 else if (CONST_STRNEQ (in.namedata, "OpenBSD"))
9225 if (! elfcore_grok_openbsd_note (abfd, &in))
9228 else if (CONST_STRNEQ (in.namedata, "QNX"))
9230 if (! elfcore_grok_nto_note (abfd, &in))
9233 else if (CONST_STRNEQ (in.namedata, "SPU/"))
9235 if (! elfcore_grok_spu_note (abfd, &in))
9240 if (! elfcore_grok_note (abfd, &in))
9246 if (in.namesz == sizeof "GNU" && strcmp (in.namedata, "GNU") == 0)
9248 if (! elfobj_grok_gnu_note (abfd, &in))
9251 else if (in.namesz == sizeof "stapsdt"
9252 && strcmp (in.namedata, "stapsdt") == 0)
9254 if (! elfobj_grok_stapsdt_note (abfd, &in))
9260 p = in.descdata + BFD_ALIGN (in.descsz, 4);
9267 elf_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size)
9274 if (bfd_seek (abfd, offset, SEEK_SET) != 0)
9277 buf = (char *) bfd_malloc (size);
9281 if (bfd_bread (buf, size, abfd) != size
9282 || !elf_parse_notes (abfd, buf, size, offset))
9292 /* Providing external access to the ELF program header table. */
9294 /* Return an upper bound on the number of bytes required to store a
9295 copy of ABFD's program header table entries. Return -1 if an error
9296 occurs; bfd_get_error will return an appropriate code. */
9299 bfd_get_elf_phdr_upper_bound (bfd *abfd)
9301 if (abfd->xvec->flavour != bfd_target_elf_flavour)
9303 bfd_set_error (bfd_error_wrong_format);
9307 return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr);
9310 /* Copy ABFD's program header table entries to *PHDRS. The entries
9311 will be stored as an array of Elf_Internal_Phdr structures, as
9312 defined in include/elf/internal.h. To find out how large the
9313 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
9315 Return the number of program header table entries read, or -1 if an
9316 error occurs; bfd_get_error will return an appropriate code. */
9319 bfd_get_elf_phdrs (bfd *abfd, void *phdrs)
9323 if (abfd->xvec->flavour != bfd_target_elf_flavour)
9325 bfd_set_error (bfd_error_wrong_format);
9329 num_phdrs = elf_elfheader (abfd)->e_phnum;
9330 memcpy (phdrs, elf_tdata (abfd)->phdr,
9331 num_phdrs * sizeof (Elf_Internal_Phdr));
9336 enum elf_reloc_type_class
9337 _bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED)
9339 return reloc_class_normal;
9342 /* For RELA architectures, return the relocation value for a
9343 relocation against a local symbol. */
9346 _bfd_elf_rela_local_sym (bfd *abfd,
9347 Elf_Internal_Sym *sym,
9349 Elf_Internal_Rela *rel)
9351 asection *sec = *psec;
9354 relocation = (sec->output_section->vma
9355 + sec->output_offset
9357 if ((sec->flags & SEC_MERGE)
9358 && ELF_ST_TYPE (sym->st_info) == STT_SECTION
9359 && sec->sec_info_type == ELF_INFO_TYPE_MERGE)
9362 _bfd_merged_section_offset (abfd, psec,
9363 elf_section_data (sec)->sec_info,
9364 sym->st_value + rel->r_addend);
9367 /* If we have changed the section, and our original section is
9368 marked with SEC_EXCLUDE, it means that the original
9369 SEC_MERGE section has been completely subsumed in some
9370 other SEC_MERGE section. In this case, we need to leave
9371 some info around for --emit-relocs. */
9372 if ((sec->flags & SEC_EXCLUDE) != 0)
9373 sec->kept_section = *psec;
9376 rel->r_addend -= relocation;
9377 rel->r_addend += sec->output_section->vma + sec->output_offset;
9383 _bfd_elf_rel_local_sym (bfd *abfd,
9384 Elf_Internal_Sym *sym,
9388 asection *sec = *psec;
9390 if (sec->sec_info_type != ELF_INFO_TYPE_MERGE)
9391 return sym->st_value + addend;
9393 return _bfd_merged_section_offset (abfd, psec,
9394 elf_section_data (sec)->sec_info,
9395 sym->st_value + addend);
9399 _bfd_elf_section_offset (bfd *abfd,
9400 struct bfd_link_info *info,
9404 switch (sec->sec_info_type)
9406 case ELF_INFO_TYPE_STABS:
9407 return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info,
9409 case ELF_INFO_TYPE_EH_FRAME:
9410 return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset);
9412 if ((sec->flags & SEC_ELF_REVERSE_COPY) != 0)
9414 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
9415 bfd_size_type address_size = bed->s->arch_size / 8;
9416 offset = sec->size - offset - address_size;
9422 /* Create a new BFD as if by bfd_openr. Rather than opening a file,
9423 reconstruct an ELF file by reading the segments out of remote memory
9424 based on the ELF file header at EHDR_VMA and the ELF program headers it
9425 points to. If not null, *LOADBASEP is filled in with the difference
9426 between the VMAs from which the segments were read, and the VMAs the
9427 file headers (and hence BFD's idea of each section's VMA) put them at.
9429 The function TARGET_READ_MEMORY is called to copy LEN bytes from the
9430 remote memory at target address VMA into the local buffer at MYADDR; it
9431 should return zero on success or an `errno' code on failure. TEMPL must
9432 be a BFD for an ELF target with the word size and byte order found in
9433 the remote memory. */
9436 bfd_elf_bfd_from_remote_memory
9440 int (*target_read_memory) (bfd_vma, bfd_byte *, int))
9442 return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory)
9443 (templ, ehdr_vma, loadbasep, target_read_memory);
9447 _bfd_elf_get_synthetic_symtab (bfd *abfd,
9448 long symcount ATTRIBUTE_UNUSED,
9449 asymbol **syms ATTRIBUTE_UNUSED,
9454 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
9457 const char *relplt_name;
9458 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
9462 Elf_Internal_Shdr *hdr;
9468 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
9471 if (dynsymcount <= 0)
9474 if (!bed->plt_sym_val)
9477 relplt_name = bed->relplt_name;
9478 if (relplt_name == NULL)
9479 relplt_name = bed->rela_plts_and_copies_p ? ".rela.plt" : ".rel.plt";
9480 relplt = bfd_get_section_by_name (abfd, relplt_name);
9484 hdr = &elf_section_data (relplt)->this_hdr;
9485 if (hdr->sh_link != elf_dynsymtab (abfd)
9486 || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA))
9489 plt = bfd_get_section_by_name (abfd, ".plt");
9493 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
9494 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
9497 count = relplt->size / hdr->sh_entsize;
9498 size = count * sizeof (asymbol);
9499 p = relplt->relocation;
9500 for (i = 0; i < count; i++, p += bed->s->int_rels_per_ext_rel)
9502 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
9506 size += sizeof ("+0x") - 1 + 8 + 8 * (bed->s->elfclass == ELFCLASS64);
9508 size += sizeof ("+0x") - 1 + 8;
9513 s = *ret = (asymbol *) bfd_malloc (size);
9517 names = (char *) (s + count);
9518 p = relplt->relocation;
9520 for (i = 0; i < count; i++, p += bed->s->int_rels_per_ext_rel)
9525 addr = bed->plt_sym_val (i, plt, p);
9526 if (addr == (bfd_vma) -1)
9529 *s = **p->sym_ptr_ptr;
9530 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
9531 we are defining a symbol, ensure one of them is set. */
9532 if ((s->flags & BSF_LOCAL) == 0)
9533 s->flags |= BSF_GLOBAL;
9534 s->flags |= BSF_SYNTHETIC;
9536 s->value = addr - plt->vma;
9539 len = strlen ((*p->sym_ptr_ptr)->name);
9540 memcpy (names, (*p->sym_ptr_ptr)->name, len);
9546 memcpy (names, "+0x", sizeof ("+0x") - 1);
9547 names += sizeof ("+0x") - 1;
9548 bfd_sprintf_vma (abfd, buf, p->addend);
9549 for (a = buf; *a == '0'; ++a)
9552 memcpy (names, a, len);
9555 memcpy (names, "@plt", sizeof ("@plt"));
9556 names += sizeof ("@plt");
9563 /* It is only used by x86-64 so far. */
9564 asection _bfd_elf_large_com_section
9565 = BFD_FAKE_SECTION (_bfd_elf_large_com_section,
9566 SEC_IS_COMMON, NULL, "LARGE_COMMON", 0);
9569 _bfd_elf_set_osabi (bfd * abfd,
9570 struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
9572 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
9574 i_ehdrp = elf_elfheader (abfd);
9576 i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;
9578 /* To make things simpler for the loader on Linux systems we set the
9579 osabi field to ELFOSABI_LINUX if the binary contains symbols of
9580 the STT_GNU_IFUNC type or STB_GNU_UNIQUE binding. */
9581 if (i_ehdrp->e_ident[EI_OSABI] == ELFOSABI_NONE
9582 && elf_tdata (abfd)->has_gnu_symbols)
9583 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX;
9587 /* Return TRUE for ELF symbol types that represent functions.
9588 This is the default version of this function, which is sufficient for
9589 most targets. It returns true if TYPE is STT_FUNC or STT_GNU_IFUNC. */
9592 _bfd_elf_is_function_type (unsigned int type)
9594 return (type == STT_FUNC
9595 || type == STT_GNU_IFUNC);