1 /* ELF executable support for BFD.
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
3 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
26 BFD support for ELF formats is being worked on.
27 Currently, the best supported back ends are for sparc and i386
28 (running svr4 or Solaris 2).
30 Documentation of the internals of the support code still needs
31 to be written. The code is changing quickly enough that we
35 /* For sparc64-cross-sparc32. */
43 #include "libiberty.h"
45 static INLINE struct elf_segment_map *make_mapping
46 PARAMS ((bfd *, asection **, unsigned int, unsigned int, boolean));
47 static boolean map_sections_to_segments PARAMS ((bfd *));
48 static int elf_sort_sections PARAMS ((const PTR, const PTR));
49 static boolean assign_file_positions_for_segments PARAMS ((bfd *));
50 static boolean assign_file_positions_except_relocs PARAMS ((bfd *));
51 static boolean prep_headers PARAMS ((bfd *));
52 static boolean swap_out_syms PARAMS ((bfd *, struct bfd_strtab_hash **, int));
53 static boolean copy_private_bfd_data PARAMS ((bfd *, bfd *));
54 static char *elf_read PARAMS ((bfd *, file_ptr, bfd_size_type));
55 static boolean setup_group PARAMS ((bfd *, Elf_Internal_Shdr *, asection *));
56 static void elf_fake_sections PARAMS ((bfd *, asection *, PTR));
57 static void set_group_contents PARAMS ((bfd *, asection *, PTR));
58 static boolean assign_section_numbers PARAMS ((bfd *));
59 static INLINE int sym_is_global PARAMS ((bfd *, asymbol *));
60 static boolean elf_map_symbols PARAMS ((bfd *));
61 static bfd_size_type get_program_header_size PARAMS ((bfd *));
62 static boolean elfcore_read_notes PARAMS ((bfd *, file_ptr, bfd_size_type));
63 static boolean elf_find_function PARAMS ((bfd *, asection *, asymbol **,
64 bfd_vma, const char **,
66 static int elfcore_make_pid PARAMS ((bfd *));
67 static boolean elfcore_maybe_make_sect PARAMS ((bfd *, char *, asection *));
68 static boolean elfcore_make_note_pseudosection PARAMS ((bfd *, char *,
69 Elf_Internal_Note *));
70 static boolean elfcore_grok_prfpreg PARAMS ((bfd *, Elf_Internal_Note *));
71 static boolean elfcore_grok_prxfpreg PARAMS ((bfd *, Elf_Internal_Note *));
72 static boolean elfcore_grok_note PARAMS ((bfd *, Elf_Internal_Note *));
74 static boolean elfcore_netbsd_get_lwpid PARAMS ((Elf_Internal_Note *, int *));
75 static boolean elfcore_grok_netbsd_procinfo PARAMS ((bfd *,
76 Elf_Internal_Note *));
77 static boolean elfcore_grok_netbsd_note PARAMS ((bfd *, Elf_Internal_Note *));
79 /* Swap version information in and out. The version information is
80 currently size independent. If that ever changes, this code will
81 need to move into elfcode.h. */
83 /* Swap in a Verdef structure. */
86 _bfd_elf_swap_verdef_in (abfd, src, dst)
88 const Elf_External_Verdef *src;
89 Elf_Internal_Verdef *dst;
91 dst->vd_version = H_GET_16 (abfd, src->vd_version);
92 dst->vd_flags = H_GET_16 (abfd, src->vd_flags);
93 dst->vd_ndx = H_GET_16 (abfd, src->vd_ndx);
94 dst->vd_cnt = H_GET_16 (abfd, src->vd_cnt);
95 dst->vd_hash = H_GET_32 (abfd, src->vd_hash);
96 dst->vd_aux = H_GET_32 (abfd, src->vd_aux);
97 dst->vd_next = H_GET_32 (abfd, src->vd_next);
100 /* Swap out a Verdef structure. */
103 _bfd_elf_swap_verdef_out (abfd, src, dst)
105 const Elf_Internal_Verdef *src;
106 Elf_External_Verdef *dst;
108 H_PUT_16 (abfd, src->vd_version, dst->vd_version);
109 H_PUT_16 (abfd, src->vd_flags, dst->vd_flags);
110 H_PUT_16 (abfd, src->vd_ndx, dst->vd_ndx);
111 H_PUT_16 (abfd, src->vd_cnt, dst->vd_cnt);
112 H_PUT_32 (abfd, src->vd_hash, dst->vd_hash);
113 H_PUT_32 (abfd, src->vd_aux, dst->vd_aux);
114 H_PUT_32 (abfd, src->vd_next, dst->vd_next);
117 /* Swap in a Verdaux structure. */
120 _bfd_elf_swap_verdaux_in (abfd, src, dst)
122 const Elf_External_Verdaux *src;
123 Elf_Internal_Verdaux *dst;
125 dst->vda_name = H_GET_32 (abfd, src->vda_name);
126 dst->vda_next = H_GET_32 (abfd, src->vda_next);
129 /* Swap out a Verdaux structure. */
132 _bfd_elf_swap_verdaux_out (abfd, src, dst)
134 const Elf_Internal_Verdaux *src;
135 Elf_External_Verdaux *dst;
137 H_PUT_32 (abfd, src->vda_name, dst->vda_name);
138 H_PUT_32 (abfd, src->vda_next, dst->vda_next);
141 /* Swap in a Verneed structure. */
144 _bfd_elf_swap_verneed_in (abfd, src, dst)
146 const Elf_External_Verneed *src;
147 Elf_Internal_Verneed *dst;
149 dst->vn_version = H_GET_16 (abfd, src->vn_version);
150 dst->vn_cnt = H_GET_16 (abfd, src->vn_cnt);
151 dst->vn_file = H_GET_32 (abfd, src->vn_file);
152 dst->vn_aux = H_GET_32 (abfd, src->vn_aux);
153 dst->vn_next = H_GET_32 (abfd, src->vn_next);
156 /* Swap out a Verneed structure. */
159 _bfd_elf_swap_verneed_out (abfd, src, dst)
161 const Elf_Internal_Verneed *src;
162 Elf_External_Verneed *dst;
164 H_PUT_16 (abfd, src->vn_version, dst->vn_version);
165 H_PUT_16 (abfd, src->vn_cnt, dst->vn_cnt);
166 H_PUT_32 (abfd, src->vn_file, dst->vn_file);
167 H_PUT_32 (abfd, src->vn_aux, dst->vn_aux);
168 H_PUT_32 (abfd, src->vn_next, dst->vn_next);
171 /* Swap in a Vernaux structure. */
174 _bfd_elf_swap_vernaux_in (abfd, src, dst)
176 const Elf_External_Vernaux *src;
177 Elf_Internal_Vernaux *dst;
179 dst->vna_hash = H_GET_32 (abfd, src->vna_hash);
180 dst->vna_flags = H_GET_16 (abfd, src->vna_flags);
181 dst->vna_other = H_GET_16 (abfd, src->vna_other);
182 dst->vna_name = H_GET_32 (abfd, src->vna_name);
183 dst->vna_next = H_GET_32 (abfd, src->vna_next);
186 /* Swap out a Vernaux structure. */
189 _bfd_elf_swap_vernaux_out (abfd, src, dst)
191 const Elf_Internal_Vernaux *src;
192 Elf_External_Vernaux *dst;
194 H_PUT_32 (abfd, src->vna_hash, dst->vna_hash);
195 H_PUT_16 (abfd, src->vna_flags, dst->vna_flags);
196 H_PUT_16 (abfd, src->vna_other, dst->vna_other);
197 H_PUT_32 (abfd, src->vna_name, dst->vna_name);
198 H_PUT_32 (abfd, src->vna_next, dst->vna_next);
201 /* Swap in a Versym structure. */
204 _bfd_elf_swap_versym_in (abfd, src, dst)
206 const Elf_External_Versym *src;
207 Elf_Internal_Versym *dst;
209 dst->vs_vers = H_GET_16 (abfd, src->vs_vers);
212 /* Swap out a Versym structure. */
215 _bfd_elf_swap_versym_out (abfd, src, dst)
217 const Elf_Internal_Versym *src;
218 Elf_External_Versym *dst;
220 H_PUT_16 (abfd, src->vs_vers, dst->vs_vers);
223 /* Standard ELF hash function. Do not change this function; you will
224 cause invalid hash tables to be generated. */
227 bfd_elf_hash (namearg)
230 const unsigned char *name = (const unsigned char *) namearg;
235 while ((ch = *name++) != '\0')
238 if ((g = (h & 0xf0000000)) != 0)
241 /* The ELF ABI says `h &= ~g', but this is equivalent in
242 this case and on some machines one insn instead of two. */
249 /* Read a specified number of bytes at a specified offset in an ELF
250 file, into a newly allocated buffer, and return a pointer to the
254 elf_read (abfd, offset, size)
261 if ((buf = bfd_alloc (abfd, size)) == NULL)
263 if (bfd_seek (abfd, offset, SEEK_SET) != 0)
265 if (bfd_bread ((PTR) buf, size, abfd) != size)
267 if (bfd_get_error () != bfd_error_system_call)
268 bfd_set_error (bfd_error_file_truncated);
275 bfd_elf_mkobject (abfd)
278 /* This just does initialization. */
279 /* coff_mkobject zalloc's space for tdata.coff_obj_data ... */
280 bfd_size_type amt = sizeof (struct elf_obj_tdata);
281 elf_tdata (abfd) = (struct elf_obj_tdata *) bfd_zalloc (abfd, amt);
282 if (elf_tdata (abfd) == 0)
284 /* Since everything is done at close time, do we need any
291 bfd_elf_mkcorefile (abfd)
294 /* I think this can be done just like an object file. */
295 return bfd_elf_mkobject (abfd);
299 bfd_elf_get_str_section (abfd, shindex)
301 unsigned int shindex;
303 Elf_Internal_Shdr **i_shdrp;
304 char *shstrtab = NULL;
306 bfd_size_type shstrtabsize;
308 i_shdrp = elf_elfsections (abfd);
309 if (i_shdrp == 0 || i_shdrp[shindex] == 0)
312 shstrtab = (char *) i_shdrp[shindex]->contents;
313 if (shstrtab == NULL)
315 /* No cached one, attempt to read, and cache what we read. */
316 offset = i_shdrp[shindex]->sh_offset;
317 shstrtabsize = i_shdrp[shindex]->sh_size;
318 shstrtab = elf_read (abfd, offset, shstrtabsize);
319 i_shdrp[shindex]->contents = (PTR) shstrtab;
325 bfd_elf_string_from_elf_section (abfd, shindex, strindex)
327 unsigned int shindex;
328 unsigned int strindex;
330 Elf_Internal_Shdr *hdr;
335 hdr = elf_elfsections (abfd)[shindex];
337 if (hdr->contents == NULL
338 && bfd_elf_get_str_section (abfd, shindex) == NULL)
341 if (strindex >= hdr->sh_size)
343 (*_bfd_error_handler)
344 (_("%s: invalid string offset %u >= %lu for section `%s'"),
345 bfd_archive_filename (abfd), strindex, (unsigned long) hdr->sh_size,
346 ((shindex == elf_elfheader(abfd)->e_shstrndx
347 && strindex == hdr->sh_name)
349 : elf_string_from_elf_strtab (abfd, hdr->sh_name)));
353 return ((char *) hdr->contents) + strindex;
356 /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP
357 sections. The first element is the flags, the rest are section
360 typedef union elf_internal_group {
361 Elf_Internal_Shdr *shdr;
363 } Elf_Internal_Group;
365 /* Set next_in_group list pointer, and group name for NEWSECT. */
368 setup_group (abfd, hdr, newsect)
370 Elf_Internal_Shdr *hdr;
373 unsigned int num_group = elf_tdata (abfd)->num_group;
375 /* If num_group is zero, read in all SHT_GROUP sections. The count
376 is set to -1 if there are no SHT_GROUP sections. */
379 unsigned int i, shnum;
381 /* First count the number of groups. If we have a SHT_GROUP
382 section with just a flag word (ie. sh_size is 4), ignore it. */
383 shnum = elf_numsections (abfd);
385 for (i = 0; i < shnum; i++)
387 Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i];
388 if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8)
393 num_group = (unsigned) -1;
394 elf_tdata (abfd)->num_group = num_group;
398 /* We keep a list of elf section headers for group sections,
399 so we can find them quickly. */
400 bfd_size_type amt = num_group * sizeof (Elf_Internal_Shdr *);
401 elf_tdata (abfd)->group_sect_ptr = bfd_alloc (abfd, amt);
402 if (elf_tdata (abfd)->group_sect_ptr == NULL)
406 for (i = 0; i < shnum; i++)
408 Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i];
409 if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8)
412 Elf_Internal_Group *dest;
414 /* Add to list of sections. */
415 elf_tdata (abfd)->group_sect_ptr[num_group] = shdr;
418 /* Read the raw contents. */
419 BFD_ASSERT (sizeof (*dest) >= 4);
420 amt = shdr->sh_size * sizeof (*dest) / 4;
421 shdr->contents = bfd_alloc (abfd, amt);
422 if (shdr->contents == NULL
423 || bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0
424 || (bfd_bread (shdr->contents, shdr->sh_size, abfd)
428 /* Translate raw contents, a flag word followed by an
429 array of elf section indices all in target byte order,
430 to the flag word followed by an array of elf section
432 src = shdr->contents + shdr->sh_size;
433 dest = (Elf_Internal_Group *) (shdr->contents + amt);
440 idx = H_GET_32 (abfd, src);
441 if (src == shdr->contents)
448 ((*_bfd_error_handler)
449 (_("%s: invalid SHT_GROUP entry"),
450 bfd_archive_filename (abfd)));
453 dest->shdr = elf_elfsections (abfd)[idx];
460 if (num_group != (unsigned) -1)
464 for (i = 0; i < num_group; i++)
466 Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i];
467 Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents;
468 unsigned int n_elt = shdr->sh_size / 4;
470 /* Look through this group's sections to see if current
471 section is a member. */
473 if ((++idx)->shdr == hdr)
477 /* We are a member of this group. Go looking through
478 other members to see if any others are linked via
480 idx = (Elf_Internal_Group *) shdr->contents;
481 n_elt = shdr->sh_size / 4;
483 if ((s = (++idx)->shdr->bfd_section) != NULL
484 && elf_next_in_group (s) != NULL)
488 /* Snarf the group name from other member, and
489 insert current section in circular list. */
490 elf_group_name (newsect) = elf_group_name (s);
491 elf_next_in_group (newsect) = elf_next_in_group (s);
492 elf_next_in_group (s) = newsect;
496 struct elf_backend_data *bed;
498 unsigned char ename[4];
502 /* Humbug. Get the name from the group signature
503 symbol. Why isn't the signature just a string?
504 Fortunately, the name index is at the same
505 place in the external symbol for both 32 and 64
507 bed = get_elf_backend_data (abfd);
508 pos = elf_tdata (abfd)->symtab_hdr.sh_offset;
509 pos += shdr->sh_info * bed->s->sizeof_sym;
510 if (bfd_seek (abfd, pos, SEEK_SET) != 0
511 || bfd_bread (ename, (bfd_size_type) 4, abfd) != 4)
513 iname = H_GET_32 (abfd, ename);
514 gname = elf_string_from_elf_strtab (abfd, iname);
515 elf_group_name (newsect) = gname;
517 /* Start a circular list with one element. */
518 elf_next_in_group (newsect) = newsect;
520 if (shdr->bfd_section != NULL)
521 elf_next_in_group (shdr->bfd_section) = newsect;
528 if (elf_group_name (newsect) == NULL)
530 (*_bfd_error_handler) (_("%s: no group info for section %s"),
531 bfd_archive_filename (abfd), newsect->name);
536 /* Make a BFD section from an ELF section. We store a pointer to the
537 BFD section in the bfd_section field of the header. */
540 _bfd_elf_make_section_from_shdr (abfd, hdr, name)
542 Elf_Internal_Shdr *hdr;
547 struct elf_backend_data *bed;
549 if (hdr->bfd_section != NULL)
551 BFD_ASSERT (strcmp (name,
552 bfd_get_section_name (abfd, hdr->bfd_section)) == 0);
556 newsect = bfd_make_section_anyway (abfd, name);
560 newsect->filepos = hdr->sh_offset;
562 if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr)
563 || ! bfd_set_section_size (abfd, newsect, hdr->sh_size)
564 || ! bfd_set_section_alignment (abfd, newsect,
565 bfd_log2 ((bfd_vma) hdr->sh_addralign)))
568 flags = SEC_NO_FLAGS;
569 if (hdr->sh_type != SHT_NOBITS)
570 flags |= SEC_HAS_CONTENTS;
571 if (hdr->sh_type == SHT_GROUP)
572 flags |= SEC_GROUP | SEC_EXCLUDE;
573 if ((hdr->sh_flags & SHF_ALLOC) != 0)
576 if (hdr->sh_type != SHT_NOBITS)
579 if ((hdr->sh_flags & SHF_WRITE) == 0)
580 flags |= SEC_READONLY;
581 if ((hdr->sh_flags & SHF_EXECINSTR) != 0)
583 else if ((flags & SEC_LOAD) != 0)
585 if ((hdr->sh_flags & SHF_MERGE) != 0)
588 newsect->entsize = hdr->sh_entsize;
589 if ((hdr->sh_flags & SHF_STRINGS) != 0)
590 flags |= SEC_STRINGS;
592 if (hdr->sh_flags & SHF_GROUP)
593 if (!setup_group (abfd, hdr, newsect))
596 /* The debugging sections appear to be recognized only by name, not
599 static const char *debug_sec_names [] =
608 for (i = ARRAY_SIZE (debug_sec_names); i--;)
609 if (strncmp (name, debug_sec_names[i], strlen (debug_sec_names[i])) == 0)
613 flags |= SEC_DEBUGGING;
616 /* As a GNU extension, if the name begins with .gnu.linkonce, we
617 only link a single copy of the section. This is used to support
618 g++. g++ will emit each template expansion in its own section.
619 The symbols will be defined as weak, so that multiple definitions
620 are permitted. The GNU linker extension is to actually discard
621 all but one of the sections. */
622 if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0)
623 flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
625 bed = get_elf_backend_data (abfd);
626 if (bed->elf_backend_section_flags)
627 if (! bed->elf_backend_section_flags (&flags, hdr))
630 if (! bfd_set_section_flags (abfd, newsect, flags))
633 if ((flags & SEC_ALLOC) != 0)
635 Elf_Internal_Phdr *phdr;
638 /* Look through the phdrs to see if we need to adjust the lma.
639 If all the p_paddr fields are zero, we ignore them, since
640 some ELF linkers produce such output. */
641 phdr = elf_tdata (abfd)->phdr;
642 for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++)
644 if (phdr->p_paddr != 0)
647 if (i < elf_elfheader (abfd)->e_phnum)
649 phdr = elf_tdata (abfd)->phdr;
650 for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++)
652 /* This section is part of this segment if its file
653 offset plus size lies within the segment's memory
654 span and, if the section is loaded, the extent of the
655 loaded data lies within the extent of the segment.
656 If the p_paddr field is not set, we don't alter the
658 if (phdr->p_type == PT_LOAD
660 && (bfd_vma) hdr->sh_offset >= phdr->p_offset
661 && (hdr->sh_offset + hdr->sh_size
662 <= phdr->p_offset + phdr->p_memsz)
663 && ((flags & SEC_LOAD) == 0
664 || (phdr->p_offset + phdr->p_filesz
665 >= hdr->sh_offset + hdr->sh_size)))
667 /* We used to do a relative adjustment here, but
668 that doesn't work if the segment is packed with
669 code from multiple VMAs. Instead we calculate
670 the LMA absoultely, based on the LMA of the
671 segment (it is assumed that the segment will
672 contain sections with contiguous LMAs, even if
673 the VMAs are not). */
674 newsect->lma = phdr->p_paddr
675 + hdr->sh_offset - phdr->p_offset;
682 hdr->bfd_section = newsect;
683 elf_section_data (newsect)->this_hdr = *hdr;
693 struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name);
696 Helper functions for GDB to locate the string tables.
697 Since BFD hides string tables from callers, GDB needs to use an
698 internal hook to find them. Sun's .stabstr, in particular,
699 isn't even pointed to by the .stab section, so ordinary
700 mechanisms wouldn't work to find it, even if we had some.
703 struct elf_internal_shdr *
704 bfd_elf_find_section (abfd, name)
708 Elf_Internal_Shdr **i_shdrp;
713 i_shdrp = elf_elfsections (abfd);
716 shstrtab = bfd_elf_get_str_section (abfd,
717 elf_elfheader (abfd)->e_shstrndx);
718 if (shstrtab != NULL)
720 max = elf_numsections (abfd);
721 for (i = 1; i < max; i++)
722 if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name))
729 const char *const bfd_elf_section_type_names[] = {
730 "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB",
731 "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE",
732 "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM",
735 /* ELF relocs are against symbols. If we are producing relocateable
736 output, and the reloc is against an external symbol, and nothing
737 has given us any additional addend, the resulting reloc will also
738 be against the same symbol. In such a case, we don't want to
739 change anything about the way the reloc is handled, since it will
740 all be done at final link time. Rather than put special case code
741 into bfd_perform_relocation, all the reloc types use this howto
742 function. It just short circuits the reloc if producing
743 relocateable output against an external symbol. */
745 bfd_reloc_status_type
746 bfd_elf_generic_reloc (abfd,
753 bfd *abfd ATTRIBUTE_UNUSED;
754 arelent *reloc_entry;
756 PTR data ATTRIBUTE_UNUSED;
757 asection *input_section;
759 char **error_message ATTRIBUTE_UNUSED;
761 if (output_bfd != (bfd *) NULL
762 && (symbol->flags & BSF_SECTION_SYM) == 0
763 && (! reloc_entry->howto->partial_inplace
764 || reloc_entry->addend == 0))
766 reloc_entry->address += input_section->output_offset;
770 return bfd_reloc_continue;
773 /* Finish SHF_MERGE section merging. */
776 _bfd_elf_merge_sections (abfd, info)
778 struct bfd_link_info *info;
780 if (!is_elf_hash_table (info))
782 if (elf_hash_table (info)->merge_info)
783 _bfd_merge_sections (abfd, elf_hash_table (info)->merge_info);
787 /* Copy the program header and other data from one object module to
791 _bfd_elf_copy_private_bfd_data (ibfd, obfd)
795 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
796 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
799 BFD_ASSERT (!elf_flags_init (obfd)
800 || (elf_elfheader (obfd)->e_flags
801 == elf_elfheader (ibfd)->e_flags));
803 elf_gp (obfd) = elf_gp (ibfd);
804 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
805 elf_flags_init (obfd) = true;
809 /* Print out the program headers. */
812 _bfd_elf_print_private_bfd_data (abfd, farg)
816 FILE *f = (FILE *) farg;
817 Elf_Internal_Phdr *p;
819 bfd_byte *dynbuf = NULL;
821 p = elf_tdata (abfd)->phdr;
826 fprintf (f, _("\nProgram Header:\n"));
827 c = elf_elfheader (abfd)->e_phnum;
828 for (i = 0; i < c; i++, p++)
835 case PT_NULL: pt = "NULL"; break;
836 case PT_LOAD: pt = "LOAD"; break;
837 case PT_DYNAMIC: pt = "DYNAMIC"; break;
838 case PT_INTERP: pt = "INTERP"; break;
839 case PT_NOTE: pt = "NOTE"; break;
840 case PT_SHLIB: pt = "SHLIB"; break;
841 case PT_PHDR: pt = "PHDR"; break;
842 case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break;
843 default: sprintf (buf, "0x%lx", p->p_type); pt = buf; break;
845 fprintf (f, "%8s off 0x", pt);
846 bfd_fprintf_vma (abfd, f, p->p_offset);
847 fprintf (f, " vaddr 0x");
848 bfd_fprintf_vma (abfd, f, p->p_vaddr);
849 fprintf (f, " paddr 0x");
850 bfd_fprintf_vma (abfd, f, p->p_paddr);
851 fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align));
852 fprintf (f, " filesz 0x");
853 bfd_fprintf_vma (abfd, f, p->p_filesz);
854 fprintf (f, " memsz 0x");
855 bfd_fprintf_vma (abfd, f, p->p_memsz);
856 fprintf (f, " flags %c%c%c",
857 (p->p_flags & PF_R) != 0 ? 'r' : '-',
858 (p->p_flags & PF_W) != 0 ? 'w' : '-',
859 (p->p_flags & PF_X) != 0 ? 'x' : '-');
860 if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0)
861 fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X));
866 s = bfd_get_section_by_name (abfd, ".dynamic");
870 unsigned long shlink;
871 bfd_byte *extdyn, *extdynend;
873 void (*swap_dyn_in) PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *));
875 fprintf (f, _("\nDynamic Section:\n"));
877 dynbuf = (bfd_byte *) bfd_malloc (s->_raw_size);
880 if (! bfd_get_section_contents (abfd, s, (PTR) dynbuf, (file_ptr) 0,
884 elfsec = _bfd_elf_section_from_bfd_section (abfd, s);
887 shlink = elf_elfsections (abfd)[elfsec]->sh_link;
889 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
890 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
893 extdynend = extdyn + s->_raw_size;
894 for (; extdyn < extdynend; extdyn += extdynsize)
896 Elf_Internal_Dyn dyn;
901 (*swap_dyn_in) (abfd, (PTR) extdyn, &dyn);
903 if (dyn.d_tag == DT_NULL)
910 sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag);
914 case DT_NEEDED: name = "NEEDED"; stringp = true; break;
915 case DT_PLTRELSZ: name = "PLTRELSZ"; break;
916 case DT_PLTGOT: name = "PLTGOT"; break;
917 case DT_HASH: name = "HASH"; break;
918 case DT_STRTAB: name = "STRTAB"; break;
919 case DT_SYMTAB: name = "SYMTAB"; break;
920 case DT_RELA: name = "RELA"; break;
921 case DT_RELASZ: name = "RELASZ"; break;
922 case DT_RELAENT: name = "RELAENT"; break;
923 case DT_STRSZ: name = "STRSZ"; break;
924 case DT_SYMENT: name = "SYMENT"; break;
925 case DT_INIT: name = "INIT"; break;
926 case DT_FINI: name = "FINI"; break;
927 case DT_SONAME: name = "SONAME"; stringp = true; break;
928 case DT_RPATH: name = "RPATH"; stringp = true; break;
929 case DT_SYMBOLIC: name = "SYMBOLIC"; break;
930 case DT_REL: name = "REL"; break;
931 case DT_RELSZ: name = "RELSZ"; break;
932 case DT_RELENT: name = "RELENT"; break;
933 case DT_PLTREL: name = "PLTREL"; break;
934 case DT_DEBUG: name = "DEBUG"; break;
935 case DT_TEXTREL: name = "TEXTREL"; break;
936 case DT_JMPREL: name = "JMPREL"; break;
937 case DT_BIND_NOW: name = "BIND_NOW"; break;
938 case DT_INIT_ARRAY: name = "INIT_ARRAY"; break;
939 case DT_FINI_ARRAY: name = "FINI_ARRAY"; break;
940 case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break;
941 case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break;
942 case DT_RUNPATH: name = "RUNPATH"; stringp = true; break;
943 case DT_FLAGS: name = "FLAGS"; break;
944 case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break;
945 case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break;
946 case DT_CHECKSUM: name = "CHECKSUM"; break;
947 case DT_PLTPADSZ: name = "PLTPADSZ"; break;
948 case DT_MOVEENT: name = "MOVEENT"; break;
949 case DT_MOVESZ: name = "MOVESZ"; break;
950 case DT_FEATURE: name = "FEATURE"; break;
951 case DT_POSFLAG_1: name = "POSFLAG_1"; break;
952 case DT_SYMINSZ: name = "SYMINSZ"; break;
953 case DT_SYMINENT: name = "SYMINENT"; break;
954 case DT_CONFIG: name = "CONFIG"; stringp = true; break;
955 case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = true; break;
956 case DT_AUDIT: name = "AUDIT"; stringp = true; break;
957 case DT_PLTPAD: name = "PLTPAD"; break;
958 case DT_MOVETAB: name = "MOVETAB"; break;
959 case DT_SYMINFO: name = "SYMINFO"; break;
960 case DT_RELACOUNT: name = "RELACOUNT"; break;
961 case DT_RELCOUNT: name = "RELCOUNT"; break;
962 case DT_FLAGS_1: name = "FLAGS_1"; break;
963 case DT_VERSYM: name = "VERSYM"; break;
964 case DT_VERDEF: name = "VERDEF"; break;
965 case DT_VERDEFNUM: name = "VERDEFNUM"; break;
966 case DT_VERNEED: name = "VERNEED"; break;
967 case DT_VERNEEDNUM: name = "VERNEEDNUM"; break;
968 case DT_AUXILIARY: name = "AUXILIARY"; stringp = true; break;
969 case DT_USED: name = "USED"; break;
970 case DT_FILTER: name = "FILTER"; stringp = true; break;
973 fprintf (f, " %-11s ", name);
975 fprintf (f, "0x%lx", (unsigned long) dyn.d_un.d_val);
979 unsigned int tagv = dyn.d_un.d_val;
981 string = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
984 fprintf (f, "%s", string);
993 if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL)
994 || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL))
996 if (! _bfd_elf_slurp_version_tables (abfd))
1000 if (elf_dynverdef (abfd) != 0)
1002 Elf_Internal_Verdef *t;
1004 fprintf (f, _("\nVersion definitions:\n"));
1005 for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef)
1007 fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx,
1008 t->vd_flags, t->vd_hash, t->vd_nodename);
1009 if (t->vd_auxptr->vda_nextptr != NULL)
1011 Elf_Internal_Verdaux *a;
1014 for (a = t->vd_auxptr->vda_nextptr;
1017 fprintf (f, "%s ", a->vda_nodename);
1023 if (elf_dynverref (abfd) != 0)
1025 Elf_Internal_Verneed *t;
1027 fprintf (f, _("\nVersion References:\n"));
1028 for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref)
1030 Elf_Internal_Vernaux *a;
1032 fprintf (f, _(" required from %s:\n"), t->vn_filename);
1033 for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
1034 fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash,
1035 a->vna_flags, a->vna_other, a->vna_nodename);
1047 /* Display ELF-specific fields of a symbol. */
1050 bfd_elf_print_symbol (abfd, filep, symbol, how)
1054 bfd_print_symbol_type how;
1056 FILE *file = (FILE *) filep;
1059 case bfd_print_symbol_name:
1060 fprintf (file, "%s", symbol->name);
1062 case bfd_print_symbol_more:
1063 fprintf (file, "elf ");
1064 bfd_fprintf_vma (abfd, file, symbol->value);
1065 fprintf (file, " %lx", (long) symbol->flags);
1067 case bfd_print_symbol_all:
1069 const char *section_name;
1070 const char *name = NULL;
1071 struct elf_backend_data *bed;
1072 unsigned char st_other;
1075 section_name = symbol->section ? symbol->section->name : "(*none*)";
1077 bed = get_elf_backend_data (abfd);
1078 if (bed->elf_backend_print_symbol_all)
1079 name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol);
1083 name = symbol->name;
1084 bfd_print_symbol_vandf (abfd, (PTR) file, symbol);
1087 fprintf (file, " %s\t", section_name);
1088 /* Print the "other" value for a symbol. For common symbols,
1089 we've already printed the size; now print the alignment.
1090 For other symbols, we have no specified alignment, and
1091 we've printed the address; now print the size. */
1092 if (bfd_is_com_section (symbol->section))
1093 val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value;
1095 val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size;
1096 bfd_fprintf_vma (abfd, file, val);
1098 /* If we have version information, print it. */
1099 if (elf_tdata (abfd)->dynversym_section != 0
1100 && (elf_tdata (abfd)->dynverdef_section != 0
1101 || elf_tdata (abfd)->dynverref_section != 0))
1103 unsigned int vernum;
1104 const char *version_string;
1106 vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION;
1109 version_string = "";
1110 else if (vernum == 1)
1111 version_string = "Base";
1112 else if (vernum <= elf_tdata (abfd)->cverdefs)
1114 elf_tdata (abfd)->verdef[vernum - 1].vd_nodename;
1117 Elf_Internal_Verneed *t;
1119 version_string = "";
1120 for (t = elf_tdata (abfd)->verref;
1124 Elf_Internal_Vernaux *a;
1126 for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
1128 if (a->vna_other == vernum)
1130 version_string = a->vna_nodename;
1137 if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0)
1138 fprintf (file, " %-11s", version_string);
1143 fprintf (file, " (%s)", version_string);
1144 for (i = 10 - strlen (version_string); i > 0; --i)
1149 /* If the st_other field is not zero, print it. */
1150 st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other;
1155 case STV_INTERNAL: fprintf (file, " .internal"); break;
1156 case STV_HIDDEN: fprintf (file, " .hidden"); break;
1157 case STV_PROTECTED: fprintf (file, " .protected"); break;
1159 /* Some other non-defined flags are also present, so print
1161 fprintf (file, " 0x%02x", (unsigned int) st_other);
1164 fprintf (file, " %s", name);
1170 /* Create an entry in an ELF linker hash table. */
1172 struct bfd_hash_entry *
1173 _bfd_elf_link_hash_newfunc (entry, table, string)
1174 struct bfd_hash_entry *entry;
1175 struct bfd_hash_table *table;
1178 /* Allocate the structure if it has not already been allocated by a
1182 entry = bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry));
1187 /* Call the allocation method of the superclass. */
1188 entry = _bfd_link_hash_newfunc (entry, table, string);
1191 struct elf_link_hash_entry *ret = (struct elf_link_hash_entry *) entry;
1192 struct elf_link_hash_table *htab = (struct elf_link_hash_table *) table;
1194 /* Set local fields. */
1198 ret->dynstr_index = 0;
1199 ret->weakdef = NULL;
1200 ret->got.refcount = htab->init_refcount;
1201 ret->plt.refcount = htab->init_refcount;
1202 ret->linker_section_pointer = NULL;
1203 ret->verinfo.verdef = NULL;
1204 ret->vtable_entries_used = NULL;
1205 ret->vtable_entries_size = 0;
1206 ret->vtable_parent = NULL;
1207 ret->type = STT_NOTYPE;
1209 /* Assume that we have been called by a non-ELF symbol reader.
1210 This flag is then reset by the code which reads an ELF input
1211 file. This ensures that a symbol created by a non-ELF symbol
1212 reader will have the flag set correctly. */
1213 ret->elf_link_hash_flags = ELF_LINK_NON_ELF;
1219 /* Copy data from an indirect symbol to its direct symbol, hiding the
1220 old indirect symbol. Also used for copying flags to a weakdef. */
1223 _bfd_elf_link_hash_copy_indirect (dir, ind)
1224 struct elf_link_hash_entry *dir, *ind;
1228 /* Copy down any references that we may have already seen to the
1229 symbol which just became indirect. */
1231 dir->elf_link_hash_flags |=
1232 (ind->elf_link_hash_flags
1233 & (ELF_LINK_HASH_REF_DYNAMIC
1234 | ELF_LINK_HASH_REF_REGULAR
1235 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
1236 | ELF_LINK_NON_GOT_REF));
1238 if (ind->root.type != bfd_link_hash_indirect)
1241 /* Copy over the global and procedure linkage table refcount entries.
1242 These may have been already set up by a check_relocs routine. */
1243 tmp = dir->got.refcount;
1246 dir->got.refcount = ind->got.refcount;
1247 ind->got.refcount = tmp;
1250 BFD_ASSERT (ind->got.refcount <= 0);
1252 tmp = dir->plt.refcount;
1255 dir->plt.refcount = ind->plt.refcount;
1256 ind->plt.refcount = tmp;
1259 BFD_ASSERT (ind->plt.refcount <= 0);
1261 if (dir->dynindx == -1)
1263 dir->dynindx = ind->dynindx;
1264 dir->dynstr_index = ind->dynstr_index;
1266 ind->dynstr_index = 0;
1269 BFD_ASSERT (ind->dynindx == -1);
1273 _bfd_elf_link_hash_hide_symbol (info, h)
1274 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1275 struct elf_link_hash_entry *h;
1277 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1278 h->plt.offset = (bfd_vma) -1;
1279 if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
1283 /* Initialize an ELF linker hash table. */
1286 _bfd_elf_link_hash_table_init (table, abfd, newfunc)
1287 struct elf_link_hash_table *table;
1289 struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
1290 struct bfd_hash_table *,
1295 table->dynamic_sections_created = false;
1296 table->dynobj = NULL;
1297 table->init_refcount = get_elf_backend_data (abfd)->can_refcount - 1;
1298 /* The first dynamic symbol is a dummy. */
1299 table->dynsymcount = 1;
1300 table->dynstr = NULL;
1301 table->bucketcount = 0;
1302 table->needed = NULL;
1303 table->runpath = NULL;
1305 table->stab_info = NULL;
1306 table->merge_info = NULL;
1307 table->dynlocal = NULL;
1308 ret = _bfd_link_hash_table_init (& table->root, abfd, newfunc);
1309 table->root.type = bfd_link_elf_hash_table;
1314 /* Create an ELF linker hash table. */
1316 struct bfd_link_hash_table *
1317 _bfd_elf_link_hash_table_create (abfd)
1320 struct elf_link_hash_table *ret;
1321 bfd_size_type amt = sizeof (struct elf_link_hash_table);
1323 ret = (struct elf_link_hash_table *) bfd_alloc (abfd, amt);
1324 if (ret == (struct elf_link_hash_table *) NULL)
1327 if (! _bfd_elf_link_hash_table_init (ret, abfd, _bfd_elf_link_hash_newfunc))
1329 bfd_release (abfd, ret);
1336 /* This is a hook for the ELF emulation code in the generic linker to
1337 tell the backend linker what file name to use for the DT_NEEDED
1338 entry for a dynamic object. The generic linker passes name as an
1339 empty string to indicate that no DT_NEEDED entry should be made. */
1342 bfd_elf_set_dt_needed_name (abfd, name)
1346 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1347 && bfd_get_format (abfd) == bfd_object)
1348 elf_dt_name (abfd) = name;
1352 bfd_elf_set_dt_needed_soname (abfd, name)
1356 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1357 && bfd_get_format (abfd) == bfd_object)
1358 elf_dt_soname (abfd) = name;
1361 /* Get the list of DT_NEEDED entries for a link. This is a hook for
1362 the linker ELF emulation code. */
1364 struct bfd_link_needed_list *
1365 bfd_elf_get_needed_list (abfd, info)
1366 bfd *abfd ATTRIBUTE_UNUSED;
1367 struct bfd_link_info *info;
1369 if (info->hash->creator->flavour != bfd_target_elf_flavour)
1371 return elf_hash_table (info)->needed;
1374 /* Get the list of DT_RPATH/DT_RUNPATH entries for a link. This is a
1375 hook for the linker ELF emulation code. */
1377 struct bfd_link_needed_list *
1378 bfd_elf_get_runpath_list (abfd, info)
1379 bfd *abfd ATTRIBUTE_UNUSED;
1380 struct bfd_link_info *info;
1382 if (info->hash->creator->flavour != bfd_target_elf_flavour)
1384 return elf_hash_table (info)->runpath;
1387 /* Get the name actually used for a dynamic object for a link. This
1388 is the SONAME entry if there is one. Otherwise, it is the string
1389 passed to bfd_elf_set_dt_needed_name, or it is the filename. */
1392 bfd_elf_get_dt_soname (abfd)
1395 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1396 && bfd_get_format (abfd) == bfd_object)
1397 return elf_dt_name (abfd);
1401 /* Get the list of DT_NEEDED entries from a BFD. This is a hook for
1402 the ELF linker emulation code. */
1405 bfd_elf_get_bfd_needed_list (abfd, pneeded)
1407 struct bfd_link_needed_list **pneeded;
1410 bfd_byte *dynbuf = NULL;
1412 unsigned long shlink;
1413 bfd_byte *extdyn, *extdynend;
1415 void (*swap_dyn_in) PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *));
1419 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour
1420 || bfd_get_format (abfd) != bfd_object)
1423 s = bfd_get_section_by_name (abfd, ".dynamic");
1424 if (s == NULL || s->_raw_size == 0)
1427 dynbuf = (bfd_byte *) bfd_malloc (s->_raw_size);
1431 if (! bfd_get_section_contents (abfd, s, (PTR) dynbuf, (file_ptr) 0,
1435 elfsec = _bfd_elf_section_from_bfd_section (abfd, s);
1439 shlink = elf_elfsections (abfd)[elfsec]->sh_link;
1441 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
1442 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
1445 extdynend = extdyn + s->_raw_size;
1446 for (; extdyn < extdynend; extdyn += extdynsize)
1448 Elf_Internal_Dyn dyn;
1450 (*swap_dyn_in) (abfd, (PTR) extdyn, &dyn);
1452 if (dyn.d_tag == DT_NULL)
1455 if (dyn.d_tag == DT_NEEDED)
1458 struct bfd_link_needed_list *l;
1459 unsigned int tagv = dyn.d_un.d_val;
1462 string = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
1467 l = (struct bfd_link_needed_list *) bfd_alloc (abfd, amt);
1488 /* Allocate an ELF string table--force the first byte to be zero. */
1490 struct bfd_strtab_hash *
1491 _bfd_elf_stringtab_init ()
1493 struct bfd_strtab_hash *ret;
1495 ret = _bfd_stringtab_init ();
1500 loc = _bfd_stringtab_add (ret, "", true, false);
1501 BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1);
1502 if (loc == (bfd_size_type) -1)
1504 _bfd_stringtab_free (ret);
1511 /* ELF .o/exec file reading */
1513 /* Create a new bfd section from an ELF section header. */
1516 bfd_section_from_shdr (abfd, shindex)
1518 unsigned int shindex;
1520 Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex];
1521 Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd);
1522 struct elf_backend_data *bed = get_elf_backend_data (abfd);
1525 name = elf_string_from_elf_strtab (abfd, hdr->sh_name);
1527 switch (hdr->sh_type)
1530 /* Inactive section. Throw it away. */
1533 case SHT_PROGBITS: /* Normal section with contents. */
1534 case SHT_DYNAMIC: /* Dynamic linking information. */
1535 case SHT_NOBITS: /* .bss section. */
1536 case SHT_HASH: /* .hash section. */
1537 case SHT_NOTE: /* .note section. */
1538 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1540 case SHT_SYMTAB: /* A symbol table */
1541 if (elf_onesymtab (abfd) == shindex)
1544 BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym);
1545 BFD_ASSERT (elf_onesymtab (abfd) == 0);
1546 elf_onesymtab (abfd) = shindex;
1547 elf_tdata (abfd)->symtab_hdr = *hdr;
1548 elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr;
1549 abfd->flags |= HAS_SYMS;
1551 /* Sometimes a shared object will map in the symbol table. If
1552 SHF_ALLOC is set, and this is a shared object, then we also
1553 treat this section as a BFD section. We can not base the
1554 decision purely on SHF_ALLOC, because that flag is sometimes
1555 set in a relocateable object file, which would confuse the
1557 if ((hdr->sh_flags & SHF_ALLOC) != 0
1558 && (abfd->flags & DYNAMIC) != 0
1559 && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
1564 case SHT_DYNSYM: /* A dynamic symbol table */
1565 if (elf_dynsymtab (abfd) == shindex)
1568 BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym);
1569 BFD_ASSERT (elf_dynsymtab (abfd) == 0);
1570 elf_dynsymtab (abfd) = shindex;
1571 elf_tdata (abfd)->dynsymtab_hdr = *hdr;
1572 elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr;
1573 abfd->flags |= HAS_SYMS;
1575 /* Besides being a symbol table, we also treat this as a regular
1576 section, so that objcopy can handle it. */
1577 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1579 case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */
1580 if (elf_symtab_shndx (abfd) == shindex)
1583 /* Get the associated symbol table. */
1584 if (! bfd_section_from_shdr (abfd, hdr->sh_link)
1585 || hdr->sh_link != elf_onesymtab (abfd))
1588 elf_symtab_shndx (abfd) = shindex;
1589 elf_tdata (abfd)->symtab_shndx_hdr = *hdr;
1590 elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr;
1593 case SHT_STRTAB: /* A string table */
1594 if (hdr->bfd_section != NULL)
1596 if (ehdr->e_shstrndx == shindex)
1598 elf_tdata (abfd)->shstrtab_hdr = *hdr;
1599 elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr;
1603 unsigned int i, num_sec;
1605 num_sec = elf_numsections (abfd);
1606 for (i = 1; i < num_sec; i++)
1608 Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i];
1609 if (hdr2->sh_link == shindex)
1611 if (! bfd_section_from_shdr (abfd, i))
1613 if (elf_onesymtab (abfd) == i)
1615 elf_tdata (abfd)->strtab_hdr = *hdr;
1616 elf_elfsections (abfd)[shindex] =
1617 &elf_tdata (abfd)->strtab_hdr;
1620 if (elf_dynsymtab (abfd) == i)
1622 elf_tdata (abfd)->dynstrtab_hdr = *hdr;
1623 elf_elfsections (abfd)[shindex] = hdr =
1624 &elf_tdata (abfd)->dynstrtab_hdr;
1625 /* We also treat this as a regular section, so
1626 that objcopy can handle it. */
1629 #if 0 /* Not handling other string tables specially right now. */
1630 hdr2 = elf_elfsections (abfd)[i]; /* in case it moved */
1631 /* We have a strtab for some random other section. */
1632 newsect = (asection *) hdr2->bfd_section;
1635 hdr->bfd_section = newsect;
1636 hdr2 = &elf_section_data (newsect)->str_hdr;
1638 elf_elfsections (abfd)[shindex] = hdr2;
1644 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1648 /* *These* do a lot of work -- but build no sections! */
1650 asection *target_sect;
1651 Elf_Internal_Shdr *hdr2;
1652 unsigned int num_sec = elf_numsections (abfd);
1654 /* Check for a bogus link to avoid crashing. */
1655 if ((hdr->sh_link >= SHN_LORESERVE && hdr->sh_link <= SHN_HIRESERVE)
1656 || hdr->sh_link >= num_sec)
1658 ((*_bfd_error_handler)
1659 (_("%s: invalid link %lu for reloc section %s (index %u)"),
1660 bfd_archive_filename (abfd), hdr->sh_link, name, shindex));
1661 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1664 /* For some incomprehensible reason Oracle distributes
1665 libraries for Solaris in which some of the objects have
1666 bogus sh_link fields. It would be nice if we could just
1667 reject them, but, unfortunately, some people need to use
1668 them. We scan through the section headers; if we find only
1669 one suitable symbol table, we clobber the sh_link to point
1670 to it. I hope this doesn't break anything. */
1671 if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB
1672 && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM)
1678 for (scan = 1; scan < num_sec; scan++)
1680 if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB
1681 || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM)
1692 hdr->sh_link = found;
1695 /* Get the symbol table. */
1696 if (elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB
1697 && ! bfd_section_from_shdr (abfd, hdr->sh_link))
1700 /* If this reloc section does not use the main symbol table we
1701 don't treat it as a reloc section. BFD can't adequately
1702 represent such a section, so at least for now, we don't
1703 try. We just present it as a normal section. We also
1704 can't use it as a reloc section if it points to the null
1706 if (hdr->sh_link != elf_onesymtab (abfd) || hdr->sh_info == SHN_UNDEF)
1707 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1709 if (! bfd_section_from_shdr (abfd, hdr->sh_info))
1711 target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info);
1712 if (target_sect == NULL)
1715 if ((target_sect->flags & SEC_RELOC) == 0
1716 || target_sect->reloc_count == 0)
1717 hdr2 = &elf_section_data (target_sect)->rel_hdr;
1721 BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL);
1722 amt = sizeof (*hdr2);
1723 hdr2 = (Elf_Internal_Shdr *) bfd_alloc (abfd, amt);
1724 elf_section_data (target_sect)->rel_hdr2 = hdr2;
1727 elf_elfsections (abfd)[shindex] = hdr2;
1728 target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr);
1729 target_sect->flags |= SEC_RELOC;
1730 target_sect->relocation = NULL;
1731 target_sect->rel_filepos = hdr->sh_offset;
1732 /* In the section to which the relocations apply, mark whether
1733 its relocations are of the REL or RELA variety. */
1734 if (hdr->sh_size != 0)
1735 elf_section_data (target_sect)->use_rela_p
1736 = (hdr->sh_type == SHT_RELA);
1737 abfd->flags |= HAS_RELOC;
1742 case SHT_GNU_verdef:
1743 elf_dynverdef (abfd) = shindex;
1744 elf_tdata (abfd)->dynverdef_hdr = *hdr;
1745 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1748 case SHT_GNU_versym:
1749 elf_dynversym (abfd) = shindex;
1750 elf_tdata (abfd)->dynversym_hdr = *hdr;
1751 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1754 case SHT_GNU_verneed:
1755 elf_dynverref (abfd) = shindex;
1756 elf_tdata (abfd)->dynverref_hdr = *hdr;
1757 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1764 /* Make a section for objcopy and relocatable links. */
1765 if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name))
1767 if (hdr->contents != NULL)
1769 Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents;
1770 unsigned int n_elt = hdr->sh_size / 4;
1773 while (--n_elt != 0)
1774 if ((s = (++idx)->shdr->bfd_section) != NULL
1775 && elf_next_in_group (s) != NULL)
1777 elf_next_in_group (hdr->bfd_section) = s;
1784 /* Check for any processor-specific section types. */
1786 if (bed->elf_backend_section_from_shdr)
1787 (*bed->elf_backend_section_from_shdr) (abfd, hdr, name);
1795 /* Return the section for the local symbol specified by ABFD, R_SYMNDX.
1796 Return SEC for sections that have no elf section, and NULL on error. */
1799 bfd_section_from_r_symndx (abfd, cache, sec, r_symndx)
1801 struct sym_sec_cache *cache;
1803 unsigned long r_symndx;
1805 unsigned char esym_shndx[4];
1806 unsigned int isym_shndx;
1807 Elf_Internal_Shdr *symtab_hdr;
1810 unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE;
1812 if (cache->abfd == abfd && cache->indx[ent] == r_symndx)
1813 return cache->sec[ent];
1815 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1816 pos = symtab_hdr->sh_offset;
1817 if (get_elf_backend_data (abfd)->s->sizeof_sym
1818 == sizeof (Elf64_External_Sym))
1820 pos += r_symndx * sizeof (Elf64_External_Sym);
1821 pos += offsetof (Elf64_External_Sym, st_shndx);
1822 amt = sizeof (((Elf64_External_Sym *) 0)->st_shndx);
1826 pos += r_symndx * sizeof (Elf32_External_Sym);
1827 pos += offsetof (Elf32_External_Sym, st_shndx);
1828 amt = sizeof (((Elf32_External_Sym *) 0)->st_shndx);
1830 if (bfd_seek (abfd, pos, SEEK_SET) != 0
1831 || bfd_bread ((PTR) esym_shndx, amt, abfd) != amt)
1833 isym_shndx = H_GET_16 (abfd, esym_shndx);
1835 if (isym_shndx == SHN_XINDEX)
1837 Elf_Internal_Shdr *shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
1838 if (shndx_hdr->sh_size != 0)
1840 pos = shndx_hdr->sh_offset;
1841 pos += r_symndx * sizeof (Elf_External_Sym_Shndx);
1842 amt = sizeof (Elf_External_Sym_Shndx);
1843 if (bfd_seek (abfd, pos, SEEK_SET) != 0
1844 || bfd_bread ((PTR) esym_shndx, amt, abfd) != amt)
1846 isym_shndx = H_GET_32 (abfd, esym_shndx);
1850 if (cache->abfd != abfd)
1852 memset (cache->indx, -1, sizeof (cache->indx));
1855 cache->indx[ent] = r_symndx;
1856 cache->sec[ent] = sec;
1857 if (isym_shndx < SHN_LORESERVE || isym_shndx > SHN_HIRESERVE)
1860 s = bfd_section_from_elf_index (abfd, isym_shndx);
1862 cache->sec[ent] = s;
1864 return cache->sec[ent];
1867 /* Given an ELF section number, retrieve the corresponding BFD
1871 bfd_section_from_elf_index (abfd, index)
1875 if (index >= elf_numsections (abfd))
1877 return elf_elfsections (abfd)[index]->bfd_section;
1881 _bfd_elf_new_section_hook (abfd, sec)
1885 struct bfd_elf_section_data *sdata;
1886 bfd_size_type amt = sizeof (*sdata);
1888 sdata = (struct bfd_elf_section_data *) bfd_zalloc (abfd, amt);
1891 sec->used_by_bfd = (PTR) sdata;
1893 /* Indicate whether or not this section should use RELA relocations. */
1895 = get_elf_backend_data (abfd)->default_use_rela_p;
1900 /* Create a new bfd section from an ELF program header.
1902 Since program segments have no names, we generate a synthetic name
1903 of the form segment<NUM>, where NUM is generally the index in the
1904 program header table. For segments that are split (see below) we
1905 generate the names segment<NUM>a and segment<NUM>b.
1907 Note that some program segments may have a file size that is different than
1908 (less than) the memory size. All this means is that at execution the
1909 system must allocate the amount of memory specified by the memory size,
1910 but only initialize it with the first "file size" bytes read from the
1911 file. This would occur for example, with program segments consisting
1912 of combined data+bss.
1914 To handle the above situation, this routine generates TWO bfd sections
1915 for the single program segment. The first has the length specified by
1916 the file size of the segment, and the second has the length specified
1917 by the difference between the two sizes. In effect, the segment is split
1918 into it's initialized and uninitialized parts.
1923 _bfd_elf_make_section_from_phdr (abfd, hdr, index, typename)
1925 Elf_Internal_Phdr *hdr;
1927 const char *typename;
1934 split = ((hdr->p_memsz > 0)
1935 && (hdr->p_filesz > 0)
1936 && (hdr->p_memsz > hdr->p_filesz));
1937 sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : "");
1938 name = bfd_alloc (abfd, (bfd_size_type) strlen (namebuf) + 1);
1941 strcpy (name, namebuf);
1942 newsect = bfd_make_section (abfd, name);
1943 if (newsect == NULL)
1945 newsect->vma = hdr->p_vaddr;
1946 newsect->lma = hdr->p_paddr;
1947 newsect->_raw_size = hdr->p_filesz;
1948 newsect->filepos = hdr->p_offset;
1949 newsect->flags |= SEC_HAS_CONTENTS;
1950 if (hdr->p_type == PT_LOAD)
1952 newsect->flags |= SEC_ALLOC;
1953 newsect->flags |= SEC_LOAD;
1954 if (hdr->p_flags & PF_X)
1956 /* FIXME: all we known is that it has execute PERMISSION,
1958 newsect->flags |= SEC_CODE;
1961 if (!(hdr->p_flags & PF_W))
1963 newsect->flags |= SEC_READONLY;
1968 sprintf (namebuf, "%s%db", typename, index);
1969 name = bfd_alloc (abfd, (bfd_size_type) strlen (namebuf) + 1);
1972 strcpy (name, namebuf);
1973 newsect = bfd_make_section (abfd, name);
1974 if (newsect == NULL)
1976 newsect->vma = hdr->p_vaddr + hdr->p_filesz;
1977 newsect->lma = hdr->p_paddr + hdr->p_filesz;
1978 newsect->_raw_size = hdr->p_memsz - hdr->p_filesz;
1979 if (hdr->p_type == PT_LOAD)
1981 newsect->flags |= SEC_ALLOC;
1982 if (hdr->p_flags & PF_X)
1983 newsect->flags |= SEC_CODE;
1985 if (!(hdr->p_flags & PF_W))
1986 newsect->flags |= SEC_READONLY;
1993 bfd_section_from_phdr (abfd, hdr, index)
1995 Elf_Internal_Phdr *hdr;
1998 struct elf_backend_data *bed;
2000 switch (hdr->p_type)
2003 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null");
2006 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load");
2009 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic");
2012 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp");
2015 if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note"))
2017 if (! elfcore_read_notes (abfd, (file_ptr) hdr->p_offset, hdr->p_filesz))
2022 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib");
2025 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr");
2028 /* Check for any processor-specific program segment types.
2029 If no handler for them, default to making "segment" sections. */
2030 bed = get_elf_backend_data (abfd);
2031 if (bed->elf_backend_section_from_phdr)
2032 return (*bed->elf_backend_section_from_phdr) (abfd, hdr, index);
2034 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "segment");
2038 /* Initialize REL_HDR, the section-header for new section, containing
2039 relocations against ASECT. If USE_RELA_P is true, we use RELA
2040 relocations; otherwise, we use REL relocations. */
2043 _bfd_elf_init_reloc_shdr (abfd, rel_hdr, asect, use_rela_p)
2045 Elf_Internal_Shdr *rel_hdr;
2050 struct elf_backend_data *bed = get_elf_backend_data (abfd);
2051 bfd_size_type amt = sizeof ".rela" + strlen (asect->name);
2053 name = bfd_alloc (abfd, amt);
2056 sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name);
2058 (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name,
2060 if (rel_hdr->sh_name == (unsigned int) -1)
2062 rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL;
2063 rel_hdr->sh_entsize = (use_rela_p
2064 ? bed->s->sizeof_rela
2065 : bed->s->sizeof_rel);
2066 rel_hdr->sh_addralign = bed->s->file_align;
2067 rel_hdr->sh_flags = 0;
2068 rel_hdr->sh_addr = 0;
2069 rel_hdr->sh_size = 0;
2070 rel_hdr->sh_offset = 0;
2075 /* Set up an ELF internal section header for a section. */
2078 elf_fake_sections (abfd, asect, failedptrarg)
2083 struct elf_backend_data *bed = get_elf_backend_data (abfd);
2084 boolean *failedptr = (boolean *) failedptrarg;
2085 Elf_Internal_Shdr *this_hdr;
2089 /* We already failed; just get out of the bfd_map_over_sections
2094 this_hdr = &elf_section_data (asect)->this_hdr;
2096 this_hdr->sh_name = (unsigned long) _bfd_elf_strtab_add (elf_shstrtab (abfd),
2097 asect->name, false);
2098 if (this_hdr->sh_name == (unsigned long) -1)
2104 this_hdr->sh_flags = 0;
2106 if ((asect->flags & SEC_ALLOC) != 0
2107 || asect->user_set_vma)
2108 this_hdr->sh_addr = asect->vma;
2110 this_hdr->sh_addr = 0;
2112 this_hdr->sh_offset = 0;
2113 this_hdr->sh_size = asect->_raw_size;
2114 this_hdr->sh_link = 0;
2115 this_hdr->sh_addralign = 1 << asect->alignment_power;
2116 /* The sh_entsize and sh_info fields may have been set already by
2117 copy_private_section_data. */
2119 this_hdr->bfd_section = asect;
2120 this_hdr->contents = NULL;
2122 /* FIXME: This should not be based on section names. */
2123 if (strcmp (asect->name, ".dynstr") == 0)
2124 this_hdr->sh_type = SHT_STRTAB;
2125 else if (strcmp (asect->name, ".hash") == 0)
2127 this_hdr->sh_type = SHT_HASH;
2128 this_hdr->sh_entsize = bed->s->sizeof_hash_entry;
2130 else if (strcmp (asect->name, ".dynsym") == 0)
2132 this_hdr->sh_type = SHT_DYNSYM;
2133 this_hdr->sh_entsize = bed->s->sizeof_sym;
2135 else if (strcmp (asect->name, ".dynamic") == 0)
2137 this_hdr->sh_type = SHT_DYNAMIC;
2138 this_hdr->sh_entsize = bed->s->sizeof_dyn;
2140 else if (strncmp (asect->name, ".rela", 5) == 0
2141 && get_elf_backend_data (abfd)->may_use_rela_p)
2143 this_hdr->sh_type = SHT_RELA;
2144 this_hdr->sh_entsize = bed->s->sizeof_rela;
2146 else if (strncmp (asect->name, ".rel", 4) == 0
2147 && get_elf_backend_data (abfd)->may_use_rel_p)
2149 this_hdr->sh_type = SHT_REL;
2150 this_hdr->sh_entsize = bed->s->sizeof_rel;
2152 else if (strncmp (asect->name, ".note", 5) == 0)
2153 this_hdr->sh_type = SHT_NOTE;
2154 else if (strncmp (asect->name, ".stab", 5) == 0
2155 && strcmp (asect->name + strlen (asect->name) - 3, "str") == 0)
2156 this_hdr->sh_type = SHT_STRTAB;
2157 else if (strcmp (asect->name, ".gnu.version") == 0)
2159 this_hdr->sh_type = SHT_GNU_versym;
2160 this_hdr->sh_entsize = sizeof (Elf_External_Versym);
2162 else if (strcmp (asect->name, ".gnu.version_d") == 0)
2164 this_hdr->sh_type = SHT_GNU_verdef;
2165 this_hdr->sh_entsize = 0;
2166 /* objcopy or strip will copy over sh_info, but may not set
2167 cverdefs. The linker will set cverdefs, but sh_info will be
2169 if (this_hdr->sh_info == 0)
2170 this_hdr->sh_info = elf_tdata (abfd)->cverdefs;
2172 BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0
2173 || this_hdr->sh_info == elf_tdata (abfd)->cverdefs);
2175 else if (strcmp (asect->name, ".gnu.version_r") == 0)
2177 this_hdr->sh_type = SHT_GNU_verneed;
2178 this_hdr->sh_entsize = 0;
2179 /* objcopy or strip will copy over sh_info, but may not set
2180 cverrefs. The linker will set cverrefs, but sh_info will be
2182 if (this_hdr->sh_info == 0)
2183 this_hdr->sh_info = elf_tdata (abfd)->cverrefs;
2185 BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0
2186 || this_hdr->sh_info == elf_tdata (abfd)->cverrefs);
2188 else if ((asect->flags & SEC_GROUP) != 0)
2190 this_hdr->sh_type = SHT_GROUP;
2191 this_hdr->sh_entsize = 4;
2193 else if ((asect->flags & SEC_ALLOC) != 0
2194 && ((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0))
2195 this_hdr->sh_type = SHT_NOBITS;
2197 this_hdr->sh_type = SHT_PROGBITS;
2199 if ((asect->flags & SEC_ALLOC) != 0)
2200 this_hdr->sh_flags |= SHF_ALLOC;
2201 if ((asect->flags & SEC_READONLY) == 0)
2202 this_hdr->sh_flags |= SHF_WRITE;
2203 if ((asect->flags & SEC_CODE) != 0)
2204 this_hdr->sh_flags |= SHF_EXECINSTR;
2205 if ((asect->flags & SEC_MERGE) != 0)
2207 this_hdr->sh_flags |= SHF_MERGE;
2208 this_hdr->sh_entsize = asect->entsize;
2209 if ((asect->flags & SEC_STRINGS) != 0)
2210 this_hdr->sh_flags |= SHF_STRINGS;
2212 if (elf_group_name (asect) != NULL)
2213 this_hdr->sh_flags |= SHF_GROUP;
2215 /* Check for processor-specific section types. */
2216 if (bed->elf_backend_fake_sections
2217 && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect))
2220 /* If the section has relocs, set up a section header for the
2221 SHT_REL[A] section. If two relocation sections are required for
2222 this section, it is up to the processor-specific back-end to
2223 create the other. */
2224 if ((asect->flags & SEC_RELOC) != 0
2225 && !_bfd_elf_init_reloc_shdr (abfd,
2226 &elf_section_data (asect)->rel_hdr,
2228 elf_section_data (asect)->use_rela_p))
2232 /* Fill in the contents of a SHT_GROUP section. */
2235 set_group_contents (abfd, sec, failedptrarg)
2238 PTR failedptrarg ATTRIBUTE_UNUSED;
2240 boolean *failedptr = (boolean *) failedptrarg;
2241 unsigned long symindx;
2244 struct bfd_link_order *l;
2246 if (elf_section_data (sec)->this_hdr.sh_type != SHT_GROUP
2250 /* If called from the assembler, swap_out_syms will have set up
2251 elf_section_syms; If called for "ld -r", the symbols won't yet
2252 be mapped, so emulate elf_bfd_final_link. */
2253 if (elf_section_syms (abfd) != NULL)
2254 symindx = elf_section_syms (abfd)[sec->index]->udata.i;
2256 symindx = elf_section_data (sec)->this_idx;
2257 elf_section_data (sec)->this_hdr.sh_info = symindx;
2259 /* Nor will the contents be allocated for "ld -r". */
2260 if (sec->contents == NULL)
2262 sec->contents = bfd_alloc (abfd, sec->_raw_size);
2263 if (sec->contents == NULL)
2270 loc = sec->contents + sec->_raw_size;
2272 /* Get the pointer to the first section in the group that we
2273 squirreled away here. */
2274 elt = elf_next_in_group (sec);
2276 /* First element is a flag word. Rest of section is elf section
2277 indices for all the sections of the group. Write them backwards
2278 just to keep the group in the same order as given in .section
2279 directives, not that it matters. */
2283 H_PUT_32 (abfd, elf_section_data (elt)->this_idx, loc);
2284 elt = elf_next_in_group (elt);
2287 /* If this is a relocatable link, then the above did nothing because
2288 SEC is the output section. Look through the input sections
2290 for (l = sec->link_order_head; l != NULL; l = l->next)
2291 if (l->type == bfd_indirect_link_order
2292 && (elt = elf_next_in_group (l->u.indirect.section)) != NULL)
2297 elf_section_data (elt->output_section)->this_idx, loc);
2298 elt = elf_next_in_group (elt);
2299 /* During a relocatable link, the lists are circular. */
2301 while (elt != elf_next_in_group (l->u.indirect.section));
2304 H_PUT_32 (abfd, 0, loc);
2306 BFD_ASSERT (loc == sec->contents);
2309 /* Assign all ELF section numbers. The dummy first section is handled here
2310 too. The link/info pointers for the standard section types are filled
2311 in here too, while we're at it. */
2314 assign_section_numbers (abfd)
2317 struct elf_obj_tdata *t = elf_tdata (abfd);
2319 unsigned int section_number, secn;
2320 Elf_Internal_Shdr **i_shdrp;
2325 _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd));
2327 for (sec = abfd->sections; sec; sec = sec->next)
2329 struct bfd_elf_section_data *d = elf_section_data (sec);
2331 if (section_number == SHN_LORESERVE)
2332 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
2333 d->this_idx = section_number++;
2334 _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name);
2335 if ((sec->flags & SEC_RELOC) == 0)
2339 if (section_number == SHN_LORESERVE)
2340 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
2341 d->rel_idx = section_number++;
2342 _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name);
2347 if (section_number == SHN_LORESERVE)
2348 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
2349 d->rel_idx2 = section_number++;
2350 _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name);
2356 if (section_number == SHN_LORESERVE)
2357 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
2358 t->shstrtab_section = section_number++;
2359 _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name);
2360 elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section;
2362 if (bfd_get_symcount (abfd) > 0)
2364 if (section_number == SHN_LORESERVE)
2365 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
2366 t->symtab_section = section_number++;
2367 _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name);
2368 if (section_number > SHN_LORESERVE - 2)
2370 if (section_number == SHN_LORESERVE)
2371 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
2372 t->symtab_shndx_section = section_number++;
2373 t->symtab_shndx_hdr.sh_name
2374 = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd),
2375 ".symtab_shndx", false);
2376 if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1)
2379 if (section_number == SHN_LORESERVE)
2380 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
2381 t->strtab_section = section_number++;
2382 _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name);
2385 _bfd_elf_strtab_finalize (elf_shstrtab (abfd));
2386 t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd));
2388 elf_numsections (abfd) = section_number;
2389 elf_elfheader (abfd)->e_shnum = section_number;
2390 if (section_number > SHN_LORESERVE)
2391 elf_elfheader (abfd)->e_shnum -= SHN_HIRESERVE + 1 - SHN_LORESERVE;
2393 /* Set up the list of section header pointers, in agreement with the
2395 amt = section_number * sizeof (Elf_Internal_Shdr *);
2396 i_shdrp = (Elf_Internal_Shdr **) bfd_alloc (abfd, amt);
2397 if (i_shdrp == NULL)
2400 amt = sizeof (Elf_Internal_Shdr);
2401 i_shdrp[0] = (Elf_Internal_Shdr *) bfd_alloc (abfd, amt);
2402 if (i_shdrp[0] == NULL)
2404 bfd_release (abfd, i_shdrp);
2407 memset (i_shdrp[0], 0, sizeof (Elf_Internal_Shdr));
2409 elf_elfsections (abfd) = i_shdrp;
2411 i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr;
2412 if (bfd_get_symcount (abfd) > 0)
2414 i_shdrp[t->symtab_section] = &t->symtab_hdr;
2415 if (elf_numsections (abfd) > SHN_LORESERVE)
2417 i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr;
2418 t->symtab_shndx_hdr.sh_link = t->symtab_section;
2420 i_shdrp[t->strtab_section] = &t->strtab_hdr;
2421 t->symtab_hdr.sh_link = t->strtab_section;
2423 for (sec = abfd->sections; sec; sec = sec->next)
2425 struct bfd_elf_section_data *d = elf_section_data (sec);
2429 i_shdrp[d->this_idx] = &d->this_hdr;
2430 if (d->rel_idx != 0)
2431 i_shdrp[d->rel_idx] = &d->rel_hdr;
2432 if (d->rel_idx2 != 0)
2433 i_shdrp[d->rel_idx2] = d->rel_hdr2;
2435 /* Fill in the sh_link and sh_info fields while we're at it. */
2437 /* sh_link of a reloc section is the section index of the symbol
2438 table. sh_info is the section index of the section to which
2439 the relocation entries apply. */
2440 if (d->rel_idx != 0)
2442 d->rel_hdr.sh_link = t->symtab_section;
2443 d->rel_hdr.sh_info = d->this_idx;
2445 if (d->rel_idx2 != 0)
2447 d->rel_hdr2->sh_link = t->symtab_section;
2448 d->rel_hdr2->sh_info = d->this_idx;
2451 switch (d->this_hdr.sh_type)
2455 /* A reloc section which we are treating as a normal BFD
2456 section. sh_link is the section index of the symbol
2457 table. sh_info is the section index of the section to
2458 which the relocation entries apply. We assume that an
2459 allocated reloc section uses the dynamic symbol table.
2460 FIXME: How can we be sure? */
2461 s = bfd_get_section_by_name (abfd, ".dynsym");
2463 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
2465 /* We look up the section the relocs apply to by name. */
2467 if (d->this_hdr.sh_type == SHT_REL)
2471 s = bfd_get_section_by_name (abfd, name);
2473 d->this_hdr.sh_info = elf_section_data (s)->this_idx;
2477 /* We assume that a section named .stab*str is a stabs
2478 string section. We look for a section with the same name
2479 but without the trailing ``str'', and set its sh_link
2480 field to point to this section. */
2481 if (strncmp (sec->name, ".stab", sizeof ".stab" - 1) == 0
2482 && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0)
2487 len = strlen (sec->name);
2488 alc = (char *) bfd_malloc ((bfd_size_type) len - 2);
2491 strncpy (alc, sec->name, len - 3);
2492 alc[len - 3] = '\0';
2493 s = bfd_get_section_by_name (abfd, alc);
2497 elf_section_data (s)->this_hdr.sh_link = d->this_idx;
2499 /* This is a .stab section. */
2500 elf_section_data (s)->this_hdr.sh_entsize =
2501 4 + 2 * bfd_get_arch_size (abfd) / 8;
2508 case SHT_GNU_verneed:
2509 case SHT_GNU_verdef:
2510 /* sh_link is the section header index of the string table
2511 used for the dynamic entries, or the symbol table, or the
2513 s = bfd_get_section_by_name (abfd, ".dynstr");
2515 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
2519 case SHT_GNU_versym:
2520 /* sh_link is the section header index of the symbol table
2521 this hash table or version table is for. */
2522 s = bfd_get_section_by_name (abfd, ".dynsym");
2524 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
2528 d->this_hdr.sh_link = t->symtab_section;
2532 for (secn = 1; secn < section_number; ++secn)
2533 if (i_shdrp[secn] == NULL)
2534 i_shdrp[secn] = i_shdrp[0];
2536 i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd),
2537 i_shdrp[secn]->sh_name);
2541 /* Map symbol from it's internal number to the external number, moving
2542 all local symbols to be at the head of the list. */
2545 sym_is_global (abfd, sym)
2549 /* If the backend has a special mapping, use it. */
2550 if (get_elf_backend_data (abfd)->elf_backend_sym_is_global)
2551 return ((*get_elf_backend_data (abfd)->elf_backend_sym_is_global)
2554 return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0
2555 || bfd_is_und_section (bfd_get_section (sym))
2556 || bfd_is_com_section (bfd_get_section (sym)));
2560 elf_map_symbols (abfd)
2563 unsigned int symcount = bfd_get_symcount (abfd);
2564 asymbol **syms = bfd_get_outsymbols (abfd);
2565 asymbol **sect_syms;
2566 unsigned int num_locals = 0;
2567 unsigned int num_globals = 0;
2568 unsigned int num_locals2 = 0;
2569 unsigned int num_globals2 = 0;
2577 fprintf (stderr, "elf_map_symbols\n");
2581 for (asect = abfd->sections; asect; asect = asect->next)
2583 if (max_index < asect->index)
2584 max_index = asect->index;
2588 amt = max_index * sizeof (asymbol *);
2589 sect_syms = (asymbol **) bfd_zalloc (abfd, amt);
2590 if (sect_syms == NULL)
2592 elf_section_syms (abfd) = sect_syms;
2593 elf_num_section_syms (abfd) = max_index;
2595 /* Init sect_syms entries for any section symbols we have already
2596 decided to output. */
2597 for (idx = 0; idx < symcount; idx++)
2599 asymbol *sym = syms[idx];
2601 if ((sym->flags & BSF_SECTION_SYM) != 0
2608 if (sec->owner != NULL)
2610 if (sec->owner != abfd)
2612 if (sec->output_offset != 0)
2615 sec = sec->output_section;
2617 /* Empty sections in the input files may have had a
2618 section symbol created for them. (See the comment
2619 near the end of _bfd_generic_link_output_symbols in
2620 linker.c). If the linker script discards such
2621 sections then we will reach this point. Since we know
2622 that we cannot avoid this case, we detect it and skip
2623 the abort and the assignment to the sect_syms array.
2624 To reproduce this particular case try running the
2625 linker testsuite test ld-scripts/weak.exp for an ELF
2626 port that uses the generic linker. */
2627 if (sec->owner == NULL)
2630 BFD_ASSERT (sec->owner == abfd);
2632 sect_syms[sec->index] = syms[idx];
2637 /* Classify all of the symbols. */
2638 for (idx = 0; idx < symcount; idx++)
2640 if (!sym_is_global (abfd, syms[idx]))
2646 /* We will be adding a section symbol for each BFD section. Most normal
2647 sections will already have a section symbol in outsymbols, but
2648 eg. SHT_GROUP sections will not, and we need the section symbol mapped
2649 at least in that case. */
2650 for (asect = abfd->sections; asect; asect = asect->next)
2652 if (sect_syms[asect->index] == NULL)
2654 if (!sym_is_global (abfd, asect->symbol))
2661 /* Now sort the symbols so the local symbols are first. */
2662 amt = (num_locals + num_globals) * sizeof (asymbol *);
2663 new_syms = (asymbol **) bfd_alloc (abfd, amt);
2665 if (new_syms == NULL)
2668 for (idx = 0; idx < symcount; idx++)
2670 asymbol *sym = syms[idx];
2673 if (!sym_is_global (abfd, sym))
2676 i = num_locals + num_globals2++;
2678 sym->udata.i = i + 1;
2680 for (asect = abfd->sections; asect; asect = asect->next)
2682 if (sect_syms[asect->index] == NULL)
2684 asymbol *sym = asect->symbol;
2687 sect_syms[asect->index] = sym;
2688 if (!sym_is_global (abfd, sym))
2691 i = num_locals + num_globals2++;
2693 sym->udata.i = i + 1;
2697 bfd_set_symtab (abfd, new_syms, num_locals + num_globals);
2699 elf_num_locals (abfd) = num_locals;
2700 elf_num_globals (abfd) = num_globals;
2704 /* Align to the maximum file alignment that could be required for any
2705 ELF data structure. */
2707 static INLINE file_ptr align_file_position PARAMS ((file_ptr, int));
2708 static INLINE file_ptr
2709 align_file_position (off, align)
2713 return (off + align - 1) & ~(align - 1);
2716 /* Assign a file position to a section, optionally aligning to the
2717 required section alignment. */
2720 _bfd_elf_assign_file_position_for_section (i_shdrp, offset, align)
2721 Elf_Internal_Shdr *i_shdrp;
2729 al = i_shdrp->sh_addralign;
2731 offset = BFD_ALIGN (offset, al);
2733 i_shdrp->sh_offset = offset;
2734 if (i_shdrp->bfd_section != NULL)
2735 i_shdrp->bfd_section->filepos = offset;
2736 if (i_shdrp->sh_type != SHT_NOBITS)
2737 offset += i_shdrp->sh_size;
2741 /* Compute the file positions we are going to put the sections at, and
2742 otherwise prepare to begin writing out the ELF file. If LINK_INFO
2743 is not NULL, this is being called by the ELF backend linker. */
2746 _bfd_elf_compute_section_file_positions (abfd, link_info)
2748 struct bfd_link_info *link_info;
2750 struct elf_backend_data *bed = get_elf_backend_data (abfd);
2752 struct bfd_strtab_hash *strtab;
2753 Elf_Internal_Shdr *shstrtab_hdr;
2755 if (abfd->output_has_begun)
2758 /* Do any elf backend specific processing first. */
2759 if (bed->elf_backend_begin_write_processing)
2760 (*bed->elf_backend_begin_write_processing) (abfd, link_info);
2762 if (! prep_headers (abfd))
2765 /* Post process the headers if necessary. */
2766 if (bed->elf_backend_post_process_headers)
2767 (*bed->elf_backend_post_process_headers) (abfd, link_info);
2770 bfd_map_over_sections (abfd, elf_fake_sections, &failed);
2774 if (!assign_section_numbers (abfd))
2777 /* The backend linker builds symbol table information itself. */
2778 if (link_info == NULL && bfd_get_symcount (abfd) > 0)
2780 /* Non-zero if doing a relocatable link. */
2781 int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC));
2783 if (! swap_out_syms (abfd, &strtab, relocatable_p))
2787 if (link_info == NULL || link_info->relocateable)
2789 bfd_map_over_sections (abfd, set_group_contents, &failed);
2794 shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr;
2795 /* sh_name was set in prep_headers. */
2796 shstrtab_hdr->sh_type = SHT_STRTAB;
2797 shstrtab_hdr->sh_flags = 0;
2798 shstrtab_hdr->sh_addr = 0;
2799 shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd));
2800 shstrtab_hdr->sh_entsize = 0;
2801 shstrtab_hdr->sh_link = 0;
2802 shstrtab_hdr->sh_info = 0;
2803 /* sh_offset is set in assign_file_positions_except_relocs. */
2804 shstrtab_hdr->sh_addralign = 1;
2806 if (!assign_file_positions_except_relocs (abfd))
2809 if (link_info == NULL && bfd_get_symcount (abfd) > 0)
2812 Elf_Internal_Shdr *hdr;
2814 off = elf_tdata (abfd)->next_file_pos;
2816 hdr = &elf_tdata (abfd)->symtab_hdr;
2817 off = _bfd_elf_assign_file_position_for_section (hdr, off, true);
2819 hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
2820 if (hdr->sh_size != 0)
2821 off = _bfd_elf_assign_file_position_for_section (hdr, off, true);
2823 hdr = &elf_tdata (abfd)->strtab_hdr;
2824 off = _bfd_elf_assign_file_position_for_section (hdr, off, true);
2826 elf_tdata (abfd)->next_file_pos = off;
2828 /* Now that we know where the .strtab section goes, write it
2830 if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
2831 || ! _bfd_stringtab_emit (abfd, strtab))
2833 _bfd_stringtab_free (strtab);
2836 abfd->output_has_begun = true;
2841 /* Create a mapping from a set of sections to a program segment. */
2843 static INLINE struct elf_segment_map *
2844 make_mapping (abfd, sections, from, to, phdr)
2846 asection **sections;
2851 struct elf_segment_map *m;
2856 amt = sizeof (struct elf_segment_map);
2857 amt += (to - from - 1) * sizeof (asection *);
2858 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2862 m->p_type = PT_LOAD;
2863 for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++)
2864 m->sections[i - from] = *hdrpp;
2865 m->count = to - from;
2867 if (from == 0 && phdr)
2869 /* Include the headers in the first PT_LOAD segment. */
2870 m->includes_filehdr = 1;
2871 m->includes_phdrs = 1;
2877 /* Set up a mapping from BFD sections to program segments. */
2880 map_sections_to_segments (abfd)
2883 asection **sections = NULL;
2887 struct elf_segment_map *mfirst;
2888 struct elf_segment_map **pm;
2889 struct elf_segment_map *m;
2891 unsigned int phdr_index;
2892 bfd_vma maxpagesize;
2894 boolean phdr_in_segment = true;
2896 asection *dynsec, *eh_frame_hdr;
2899 if (elf_tdata (abfd)->segment_map != NULL)
2902 if (bfd_count_sections (abfd) == 0)
2905 /* Select the allocated sections, and sort them. */
2907 amt = bfd_count_sections (abfd) * sizeof (asection *);
2908 sections = (asection **) bfd_malloc (amt);
2909 if (sections == NULL)
2913 for (s = abfd->sections; s != NULL; s = s->next)
2915 if ((s->flags & SEC_ALLOC) != 0)
2921 BFD_ASSERT (i <= bfd_count_sections (abfd));
2924 qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections);
2926 /* Build the mapping. */
2931 /* If we have a .interp section, then create a PT_PHDR segment for
2932 the program headers and a PT_INTERP segment for the .interp
2934 s = bfd_get_section_by_name (abfd, ".interp");
2935 if (s != NULL && (s->flags & SEC_LOAD) != 0)
2937 amt = sizeof (struct elf_segment_map);
2938 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2942 m->p_type = PT_PHDR;
2943 /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */
2944 m->p_flags = PF_R | PF_X;
2945 m->p_flags_valid = 1;
2946 m->includes_phdrs = 1;
2951 amt = sizeof (struct elf_segment_map);
2952 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2956 m->p_type = PT_INTERP;
2964 /* Look through the sections. We put sections in the same program
2965 segment when the start of the second section can be placed within
2966 a few bytes of the end of the first section. */
2969 maxpagesize = get_elf_backend_data (abfd)->maxpagesize;
2971 dynsec = bfd_get_section_by_name (abfd, ".dynamic");
2973 && (dynsec->flags & SEC_LOAD) == 0)
2976 /* Deal with -Ttext or something similar such that the first section
2977 is not adjacent to the program headers. This is an
2978 approximation, since at this point we don't know exactly how many
2979 program headers we will need. */
2982 bfd_size_type phdr_size;
2984 phdr_size = elf_tdata (abfd)->program_header_size;
2986 phdr_size = get_elf_backend_data (abfd)->s->sizeof_phdr;
2987 if ((abfd->flags & D_PAGED) == 0
2988 || sections[0]->lma < phdr_size
2989 || sections[0]->lma % maxpagesize < phdr_size % maxpagesize)
2990 phdr_in_segment = false;
2993 for (i = 0, hdrpp = sections; i < count; i++, hdrpp++)
2996 boolean new_segment;
3000 /* See if this section and the last one will fit in the same
3003 if (last_hdr == NULL)
3005 /* If we don't have a segment yet, then we don't need a new
3006 one (we build the last one after this loop). */
3007 new_segment = false;
3009 else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma)
3011 /* If this section has a different relation between the
3012 virtual address and the load address, then we need a new
3016 else if (BFD_ALIGN (last_hdr->lma + last_hdr->_raw_size, maxpagesize)
3017 < BFD_ALIGN (hdr->lma, maxpagesize))
3019 /* If putting this section in this segment would force us to
3020 skip a page in the segment, then we need a new segment. */
3023 else if ((last_hdr->flags & SEC_LOAD) == 0
3024 && (hdr->flags & SEC_LOAD) != 0)
3026 /* We don't want to put a loadable section after a
3027 nonloadable section in the same segment. */
3030 else if ((abfd->flags & D_PAGED) == 0)
3032 /* If the file is not demand paged, which means that we
3033 don't require the sections to be correctly aligned in the
3034 file, then there is no other reason for a new segment. */
3035 new_segment = false;
3038 && (hdr->flags & SEC_READONLY) == 0
3039 && (BFD_ALIGN (last_hdr->lma + last_hdr->_raw_size, maxpagesize)
3042 /* We don't want to put a writable section in a read only
3043 segment, unless they are on the same page in memory
3044 anyhow. We already know that the last section does not
3045 bring us past the current section on the page, so the
3046 only case in which the new section is not on the same
3047 page as the previous section is when the previous section
3048 ends precisely on a page boundary. */
3053 /* Otherwise, we can use the same segment. */
3054 new_segment = false;
3059 if ((hdr->flags & SEC_READONLY) == 0)
3065 /* We need a new program segment. We must create a new program
3066 header holding all the sections from phdr_index until hdr. */
3068 m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment);
3075 if ((hdr->flags & SEC_READONLY) == 0)
3082 phdr_in_segment = false;
3085 /* Create a final PT_LOAD program segment. */
3086 if (last_hdr != NULL)
3088 m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment);
3096 /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */
3099 amt = sizeof (struct elf_segment_map);
3100 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
3104 m->p_type = PT_DYNAMIC;
3106 m->sections[0] = dynsec;
3112 /* For each loadable .note section, add a PT_NOTE segment. We don't
3113 use bfd_get_section_by_name, because if we link together
3114 nonloadable .note sections and loadable .note sections, we will
3115 generate two .note sections in the output file. FIXME: Using
3116 names for section types is bogus anyhow. */
3117 for (s = abfd->sections; s != NULL; s = s->next)
3119 if ((s->flags & SEC_LOAD) != 0
3120 && strncmp (s->name, ".note", 5) == 0)
3122 amt = sizeof (struct elf_segment_map);
3123 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
3127 m->p_type = PT_NOTE;
3136 /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME
3138 eh_frame_hdr = NULL;
3139 if (elf_tdata (abfd)->eh_frame_hdr)
3140 eh_frame_hdr = bfd_get_section_by_name (abfd, ".eh_frame_hdr");
3141 if (eh_frame_hdr != NULL && (eh_frame_hdr->flags & SEC_LOAD))
3143 amt = sizeof (struct elf_segment_map);
3144 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
3148 m->p_type = PT_GNU_EH_FRAME;
3150 m->sections[0] = eh_frame_hdr;
3159 elf_tdata (abfd)->segment_map = mfirst;
3163 if (sections != NULL)
3168 /* Sort sections by address. */
3171 elf_sort_sections (arg1, arg2)
3175 const asection *sec1 = *(const asection **) arg1;
3176 const asection *sec2 = *(const asection **) arg2;
3178 /* Sort by LMA first, since this is the address used to
3179 place the section into a segment. */
3180 if (sec1->lma < sec2->lma)
3182 else if (sec1->lma > sec2->lma)
3185 /* Then sort by VMA. Normally the LMA and the VMA will be
3186 the same, and this will do nothing. */
3187 if (sec1->vma < sec2->vma)
3189 else if (sec1->vma > sec2->vma)
3192 /* Put !SEC_LOAD sections after SEC_LOAD ones. */
3194 #define TOEND(x) (((x)->flags & SEC_LOAD) == 0)
3200 /* If the indicies are the same, do not return 0
3201 here, but continue to try the next comparison. */
3202 if (sec1->target_index - sec2->target_index != 0)
3203 return sec1->target_index - sec2->target_index;
3208 else if (TOEND (sec2))
3213 /* Sort by size, to put zero sized sections
3214 before others at the same address. */
3216 if (sec1->_raw_size < sec2->_raw_size)
3218 if (sec1->_raw_size > sec2->_raw_size)
3221 return sec1->target_index - sec2->target_index;
3224 /* Assign file positions to the sections based on the mapping from
3225 sections to segments. This function also sets up some fields in
3226 the file header, and writes out the program headers. */
3229 assign_file_positions_for_segments (abfd)
3232 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3234 struct elf_segment_map *m;
3236 Elf_Internal_Phdr *phdrs;
3238 bfd_vma filehdr_vaddr, filehdr_paddr;
3239 bfd_vma phdrs_vaddr, phdrs_paddr;
3240 Elf_Internal_Phdr *p;
3243 if (elf_tdata (abfd)->segment_map == NULL)
3245 if (! map_sections_to_segments (abfd))
3249 if (bed->elf_backend_modify_segment_map)
3251 if (! (*bed->elf_backend_modify_segment_map) (abfd))
3256 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
3259 elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr;
3260 elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr;
3261 elf_elfheader (abfd)->e_phnum = count;
3266 /* If we already counted the number of program segments, make sure
3267 that we allocated enough space. This happens when SIZEOF_HEADERS
3268 is used in a linker script. */
3269 alloc = elf_tdata (abfd)->program_header_size / bed->s->sizeof_phdr;
3270 if (alloc != 0 && count > alloc)
3272 ((*_bfd_error_handler)
3273 (_("%s: Not enough room for program headers (allocated %u, need %u)"),
3274 bfd_get_filename (abfd), alloc, count));
3275 bfd_set_error (bfd_error_bad_value);
3282 amt = alloc * sizeof (Elf_Internal_Phdr);
3283 phdrs = (Elf_Internal_Phdr *) bfd_alloc (abfd, amt);
3287 off = bed->s->sizeof_ehdr;
3288 off += alloc * bed->s->sizeof_phdr;
3295 for (m = elf_tdata (abfd)->segment_map, p = phdrs;
3302 /* If elf_segment_map is not from map_sections_to_segments, the
3303 sections may not be correctly ordered. NOTE: sorting should
3304 not be done to the PT_NOTE section of a corefile, which may
3305 contain several pseudo-sections artificially created by bfd.
3306 Sorting these pseudo-sections breaks things badly. */
3308 && !(elf_elfheader (abfd)->e_type == ET_CORE
3309 && m->p_type == PT_NOTE))
3310 qsort (m->sections, (size_t) m->count, sizeof (asection *),
3313 p->p_type = m->p_type;
3314 p->p_flags = m->p_flags;
3316 if (p->p_type == PT_LOAD
3318 && (m->sections[0]->flags & SEC_ALLOC) != 0)
3320 if ((abfd->flags & D_PAGED) != 0)
3321 off += (m->sections[0]->vma - off) % bed->maxpagesize;
3324 bfd_size_type align;
3327 for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
3329 bfd_size_type secalign;
3331 secalign = bfd_get_section_alignment (abfd, *secpp);
3332 if (secalign > align)
3336 off += (m->sections[0]->vma - off) % (1 << align);
3343 p->p_vaddr = m->sections[0]->vma;
3345 if (m->p_paddr_valid)
3346 p->p_paddr = m->p_paddr;
3347 else if (m->count == 0)
3350 p->p_paddr = m->sections[0]->lma;
3352 if (p->p_type == PT_LOAD
3353 && (abfd->flags & D_PAGED) != 0)
3354 p->p_align = bed->maxpagesize;
3355 else if (m->count == 0)
3356 p->p_align = bed->s->file_align;
3364 if (m->includes_filehdr)
3366 if (! m->p_flags_valid)
3369 p->p_filesz = bed->s->sizeof_ehdr;
3370 p->p_memsz = bed->s->sizeof_ehdr;
3373 BFD_ASSERT (p->p_type == PT_LOAD);
3375 if (p->p_vaddr < (bfd_vma) off)
3377 _bfd_error_handler (_("%s: Not enough room for program headers, try linking with -N"),
3378 bfd_get_filename (abfd));
3379 bfd_set_error (bfd_error_bad_value);
3384 if (! m->p_paddr_valid)
3387 if (p->p_type == PT_LOAD)
3389 filehdr_vaddr = p->p_vaddr;
3390 filehdr_paddr = p->p_paddr;
3394 if (m->includes_phdrs)
3396 if (! m->p_flags_valid)
3399 if (m->includes_filehdr)
3401 if (p->p_type == PT_LOAD)
3403 phdrs_vaddr = p->p_vaddr + bed->s->sizeof_ehdr;
3404 phdrs_paddr = p->p_paddr + bed->s->sizeof_ehdr;
3409 p->p_offset = bed->s->sizeof_ehdr;
3413 BFD_ASSERT (p->p_type == PT_LOAD);
3414 p->p_vaddr -= off - p->p_offset;
3415 if (! m->p_paddr_valid)
3416 p->p_paddr -= off - p->p_offset;
3419 if (p->p_type == PT_LOAD)
3421 phdrs_vaddr = p->p_vaddr;
3422 phdrs_paddr = p->p_paddr;
3425 phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr;
3428 p->p_filesz += alloc * bed->s->sizeof_phdr;
3429 p->p_memsz += alloc * bed->s->sizeof_phdr;
3432 if (p->p_type == PT_LOAD
3433 || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core))
3435 if (! m->includes_filehdr && ! m->includes_phdrs)
3441 adjust = off - (p->p_offset + p->p_filesz);
3442 p->p_filesz += adjust;
3443 p->p_memsz += adjust;
3449 for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
3453 bfd_size_type align;
3457 align = 1 << bfd_get_section_alignment (abfd, sec);
3459 /* The section may have artificial alignment forced by a
3460 link script. Notice this case by the gap between the
3461 cumulative phdr lma and the section's lma. */
3462 if (p->p_paddr + p->p_memsz < sec->lma)
3464 bfd_vma adjust = sec->lma - (p->p_paddr + p->p_memsz);
3466 p->p_memsz += adjust;
3469 if ((flags & SEC_LOAD) != 0)
3470 p->p_filesz += adjust;
3473 if (p->p_type == PT_LOAD)
3475 bfd_signed_vma adjust;
3477 if ((flags & SEC_LOAD) != 0)
3479 adjust = sec->lma - (p->p_paddr + p->p_memsz);
3483 else if ((flags & SEC_ALLOC) != 0)
3485 /* The section VMA must equal the file position
3486 modulo the page size. FIXME: I'm not sure if
3487 this adjustment is really necessary. We used to
3488 not have the SEC_LOAD case just above, and then
3489 this was necessary, but now I'm not sure. */
3490 if ((abfd->flags & D_PAGED) != 0)
3491 adjust = (sec->vma - voff) % bed->maxpagesize;
3493 adjust = (sec->vma - voff) % align;
3502 (* _bfd_error_handler) (_("\
3503 Error: First section in segment (%s) starts at 0x%x whereas the segment starts at 0x%x"),
3504 bfd_section_name (abfd, sec),
3509 p->p_memsz += adjust;
3512 if ((flags & SEC_LOAD) != 0)
3513 p->p_filesz += adjust;
3518 /* We check SEC_HAS_CONTENTS here because if NOLOAD is
3519 used in a linker script we may have a section with
3520 SEC_LOAD clear but which is supposed to have
3522 if ((flags & SEC_LOAD) != 0
3523 || (flags & SEC_HAS_CONTENTS) != 0)
3524 off += sec->_raw_size;
3526 if ((flags & SEC_ALLOC) != 0)
3527 voff += sec->_raw_size;
3530 if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)
3532 /* The actual "note" segment has i == 0.
3533 This is the one that actually contains everything. */
3537 p->p_filesz = sec->_raw_size;
3538 off += sec->_raw_size;
3543 /* Fake sections -- don't need to be written. */
3546 flags = sec->flags = 0;
3553 p->p_memsz += sec->_raw_size;
3555 if ((flags & SEC_LOAD) != 0)
3556 p->p_filesz += sec->_raw_size;
3558 if (align > p->p_align
3559 && (p->p_type != PT_LOAD || (abfd->flags & D_PAGED) == 0))
3563 if (! m->p_flags_valid)
3566 if ((flags & SEC_CODE) != 0)
3568 if ((flags & SEC_READONLY) == 0)
3574 /* Now that we have set the section file positions, we can set up
3575 the file positions for the non PT_LOAD segments. */
3576 for (m = elf_tdata (abfd)->segment_map, p = phdrs;
3580 if (p->p_type != PT_LOAD && m->count > 0)
3582 BFD_ASSERT (! m->includes_filehdr && ! m->includes_phdrs);
3583 p->p_offset = m->sections[0]->filepos;
3587 if (m->includes_filehdr)
3589 p->p_vaddr = filehdr_vaddr;
3590 if (! m->p_paddr_valid)
3591 p->p_paddr = filehdr_paddr;
3593 else if (m->includes_phdrs)
3595 p->p_vaddr = phdrs_vaddr;
3596 if (! m->p_paddr_valid)
3597 p->p_paddr = phdrs_paddr;
3602 /* Clear out any program headers we allocated but did not use. */
3603 for (; count < alloc; count++, p++)
3605 memset (p, 0, sizeof *p);
3606 p->p_type = PT_NULL;
3609 elf_tdata (abfd)->phdr = phdrs;
3611 elf_tdata (abfd)->next_file_pos = off;
3613 /* Write out the program headers. */
3614 if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0
3615 || bed->s->write_out_phdrs (abfd, phdrs, alloc) != 0)
3621 /* Get the size of the program header.
3623 If this is called by the linker before any of the section VMA's are set, it
3624 can't calculate the correct value for a strange memory layout. This only
3625 happens when SIZEOF_HEADERS is used in a linker script. In this case,
3626 SORTED_HDRS is NULL and we assume the normal scenario of one text and one
3627 data segment (exclusive of .interp and .dynamic).
3629 ??? User written scripts must either not use SIZEOF_HEADERS, or assume there
3630 will be two segments. */
3632 static bfd_size_type
3633 get_program_header_size (abfd)
3638 struct elf_backend_data *bed = get_elf_backend_data (abfd);
3640 /* We can't return a different result each time we're called. */
3641 if (elf_tdata (abfd)->program_header_size != 0)
3642 return elf_tdata (abfd)->program_header_size;
3644 if (elf_tdata (abfd)->segment_map != NULL)
3646 struct elf_segment_map *m;
3649 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
3651 elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr;
3652 return elf_tdata (abfd)->program_header_size;
3655 /* Assume we will need exactly two PT_LOAD segments: one for text
3656 and one for data. */
3659 s = bfd_get_section_by_name (abfd, ".interp");
3660 if (s != NULL && (s->flags & SEC_LOAD) != 0)
3662 /* If we have a loadable interpreter section, we need a
3663 PT_INTERP segment. In this case, assume we also need a
3664 PT_PHDR segment, although that may not be true for all
3669 if (bfd_get_section_by_name (abfd, ".dynamic") != NULL)
3671 /* We need a PT_DYNAMIC segment. */
3675 if (elf_tdata (abfd)->eh_frame_hdr
3676 && bfd_get_section_by_name (abfd, ".eh_frame_hdr") != NULL)
3678 /* We need a PT_GNU_EH_FRAME segment. */
3682 for (s = abfd->sections; s != NULL; s = s->next)
3684 if ((s->flags & SEC_LOAD) != 0
3685 && strncmp (s->name, ".note", 5) == 0)
3687 /* We need a PT_NOTE segment. */
3692 /* Let the backend count up any program headers it might need. */
3693 if (bed->elf_backend_additional_program_headers)
3697 a = (*bed->elf_backend_additional_program_headers) (abfd);
3703 elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr;
3704 return elf_tdata (abfd)->program_header_size;
3707 /* Work out the file positions of all the sections. This is called by
3708 _bfd_elf_compute_section_file_positions. All the section sizes and
3709 VMAs must be known before this is called.
3711 We do not consider reloc sections at this point, unless they form
3712 part of the loadable image. Reloc sections are assigned file
3713 positions in assign_file_positions_for_relocs, which is called by
3714 write_object_contents and final_link.
3716 We also don't set the positions of the .symtab and .strtab here. */
3719 assign_file_positions_except_relocs (abfd)
3722 struct elf_obj_tdata * const tdata = elf_tdata (abfd);
3723 Elf_Internal_Ehdr * const i_ehdrp = elf_elfheader (abfd);
3724 Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd);
3725 unsigned int num_sec = elf_numsections (abfd);
3727 struct elf_backend_data *bed = get_elf_backend_data (abfd);
3729 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0
3730 && bfd_get_format (abfd) != bfd_core)
3732 Elf_Internal_Shdr **hdrpp;
3735 /* Start after the ELF header. */
3736 off = i_ehdrp->e_ehsize;
3738 /* We are not creating an executable, which means that we are
3739 not creating a program header, and that the actual order of
3740 the sections in the file is unimportant. */
3741 for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++)
3743 Elf_Internal_Shdr *hdr;
3746 if (hdr->sh_type == SHT_REL
3747 || hdr->sh_type == SHT_RELA
3748 || i == tdata->symtab_section
3749 || i == tdata->symtab_shndx_section
3750 || i == tdata->strtab_section)
3752 hdr->sh_offset = -1;
3755 off = _bfd_elf_assign_file_position_for_section (hdr, off, true);
3757 if (i == SHN_LORESERVE - 1)
3759 i += SHN_HIRESERVE + 1 - SHN_LORESERVE;
3760 hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE;
3767 Elf_Internal_Shdr **hdrpp;
3769 /* Assign file positions for the loaded sections based on the
3770 assignment of sections to segments. */
3771 if (! assign_file_positions_for_segments (abfd))
3774 /* Assign file positions for the other sections. */
3776 off = elf_tdata (abfd)->next_file_pos;
3777 for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++)
3779 Elf_Internal_Shdr *hdr;
3782 if (hdr->bfd_section != NULL
3783 && hdr->bfd_section->filepos != 0)
3784 hdr->sh_offset = hdr->bfd_section->filepos;
3785 else if ((hdr->sh_flags & SHF_ALLOC) != 0)
3787 ((*_bfd_error_handler)
3788 (_("%s: warning: allocated section `%s' not in segment"),
3789 bfd_get_filename (abfd),
3790 (hdr->bfd_section == NULL
3792 : hdr->bfd_section->name)));
3793 if ((abfd->flags & D_PAGED) != 0)
3794 off += (hdr->sh_addr - off) % bed->maxpagesize;
3796 off += (hdr->sh_addr - off) % hdr->sh_addralign;
3797 off = _bfd_elf_assign_file_position_for_section (hdr, off,
3800 else if (hdr->sh_type == SHT_REL
3801 || hdr->sh_type == SHT_RELA
3802 || hdr == i_shdrpp[tdata->symtab_section]
3803 || hdr == i_shdrpp[tdata->symtab_shndx_section]
3804 || hdr == i_shdrpp[tdata->strtab_section])
3805 hdr->sh_offset = -1;
3807 off = _bfd_elf_assign_file_position_for_section (hdr, off, true);
3809 if (i == SHN_LORESERVE - 1)
3811 i += SHN_HIRESERVE + 1 - SHN_LORESERVE;
3812 hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE;
3817 /* Place the section headers. */
3818 off = align_file_position (off, bed->s->file_align);
3819 i_ehdrp->e_shoff = off;
3820 off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize;
3822 elf_tdata (abfd)->next_file_pos = off;
3831 Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
3832 Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */
3833 Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */
3835 struct elf_strtab_hash *shstrtab;
3836 struct elf_backend_data *bed = get_elf_backend_data (abfd);
3838 i_ehdrp = elf_elfheader (abfd);
3839 i_shdrp = elf_elfsections (abfd);
3841 shstrtab = _bfd_elf_strtab_init ();
3842 if (shstrtab == NULL)
3845 elf_shstrtab (abfd) = shstrtab;
3847 i_ehdrp->e_ident[EI_MAG0] = ELFMAG0;
3848 i_ehdrp->e_ident[EI_MAG1] = ELFMAG1;
3849 i_ehdrp->e_ident[EI_MAG2] = ELFMAG2;
3850 i_ehdrp->e_ident[EI_MAG3] = ELFMAG3;
3852 i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass;
3853 i_ehdrp->e_ident[EI_DATA] =
3854 bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB;
3855 i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current;
3857 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_NONE;
3858 i_ehdrp->e_ident[EI_ABIVERSION] = 0;
3860 for (count = EI_PAD; count < EI_NIDENT; count++)
3861 i_ehdrp->e_ident[count] = 0;
3863 if ((abfd->flags & DYNAMIC) != 0)
3864 i_ehdrp->e_type = ET_DYN;
3865 else if ((abfd->flags & EXEC_P) != 0)
3866 i_ehdrp->e_type = ET_EXEC;
3867 else if (bfd_get_format (abfd) == bfd_core)
3868 i_ehdrp->e_type = ET_CORE;
3870 i_ehdrp->e_type = ET_REL;
3872 switch (bfd_get_arch (abfd))
3874 case bfd_arch_unknown:
3875 i_ehdrp->e_machine = EM_NONE;
3878 /* There used to be a long list of cases here, each one setting
3879 e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE
3880 in the corresponding bfd definition. To avoid duplication,
3881 the switch was removed. Machines that need special handling
3882 can generally do it in elf_backend_final_write_processing(),
3883 unless they need the information earlier than the final write.
3884 Such need can generally be supplied by replacing the tests for
3885 e_machine with the conditions used to determine it. */
3887 if (get_elf_backend_data (abfd) != NULL)
3888 i_ehdrp->e_machine = get_elf_backend_data (abfd)->elf_machine_code;
3890 i_ehdrp->e_machine = EM_NONE;
3893 i_ehdrp->e_version = bed->s->ev_current;
3894 i_ehdrp->e_ehsize = bed->s->sizeof_ehdr;
3896 /* No program header, for now. */
3897 i_ehdrp->e_phoff = 0;
3898 i_ehdrp->e_phentsize = 0;
3899 i_ehdrp->e_phnum = 0;
3901 /* Each bfd section is section header entry. */
3902 i_ehdrp->e_entry = bfd_get_start_address (abfd);
3903 i_ehdrp->e_shentsize = bed->s->sizeof_shdr;
3905 /* If we're building an executable, we'll need a program header table. */
3906 if (abfd->flags & EXEC_P)
3908 /* It all happens later. */
3910 i_ehdrp->e_phentsize = sizeof (Elf_External_Phdr);
3912 /* elf_build_phdrs() returns a (NULL-terminated) array of
3913 Elf_Internal_Phdrs. */
3914 i_phdrp = elf_build_phdrs (abfd, i_ehdrp, i_shdrp, &i_ehdrp->e_phnum);
3915 i_ehdrp->e_phoff = outbase;
3916 outbase += i_ehdrp->e_phentsize * i_ehdrp->e_phnum;
3921 i_ehdrp->e_phentsize = 0;
3923 i_ehdrp->e_phoff = 0;
3926 elf_tdata (abfd)->symtab_hdr.sh_name =
3927 (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", false);
3928 elf_tdata (abfd)->strtab_hdr.sh_name =
3929 (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", false);
3930 elf_tdata (abfd)->shstrtab_hdr.sh_name =
3931 (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", false);
3932 if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1
3933 || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1
3934 || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1)
3940 /* Assign file positions for all the reloc sections which are not part
3941 of the loadable file image. */
3944 _bfd_elf_assign_file_positions_for_relocs (abfd)
3948 unsigned int i, num_sec;
3949 Elf_Internal_Shdr **shdrpp;
3951 off = elf_tdata (abfd)->next_file_pos;
3953 num_sec = elf_numsections (abfd);
3954 for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++)
3956 Elf_Internal_Shdr *shdrp;
3959 if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA)
3960 && shdrp->sh_offset == -1)
3961 off = _bfd_elf_assign_file_position_for_section (shdrp, off, true);
3964 elf_tdata (abfd)->next_file_pos = off;
3968 _bfd_elf_write_object_contents (abfd)
3971 struct elf_backend_data *bed = get_elf_backend_data (abfd);
3972 Elf_Internal_Ehdr *i_ehdrp;
3973 Elf_Internal_Shdr **i_shdrp;
3975 unsigned int count, num_sec;
3977 if (! abfd->output_has_begun
3978 && ! _bfd_elf_compute_section_file_positions
3979 (abfd, (struct bfd_link_info *) NULL))
3982 i_shdrp = elf_elfsections (abfd);
3983 i_ehdrp = elf_elfheader (abfd);
3986 bfd_map_over_sections (abfd, bed->s->write_relocs, &failed);
3990 _bfd_elf_assign_file_positions_for_relocs (abfd);
3992 /* After writing the headers, we need to write the sections too... */
3993 num_sec = elf_numsections (abfd);
3994 for (count = 1; count < num_sec; count++)
3996 if (bed->elf_backend_section_processing)
3997 (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]);
3998 if (i_shdrp[count]->contents)
4000 bfd_size_type amt = i_shdrp[count]->sh_size;
4002 if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0
4003 || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt)
4006 if (count == SHN_LORESERVE - 1)
4007 count += SHN_HIRESERVE + 1 - SHN_LORESERVE;
4010 /* Write out the section header names. */
4011 if (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0
4012 || ! _bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))
4015 if (bed->elf_backend_final_write_processing)
4016 (*bed->elf_backend_final_write_processing) (abfd,
4017 elf_tdata (abfd)->linker);
4019 return bed->s->write_shdrs_and_ehdr (abfd);
4023 _bfd_elf_write_corefile_contents (abfd)
4026 /* Hopefully this can be done just like an object file. */
4027 return _bfd_elf_write_object_contents (abfd);
4030 /* Given a section, search the header to find them. */
4033 _bfd_elf_section_from_bfd_section (abfd, asect)
4037 struct elf_backend_data *bed = get_elf_backend_data (abfd);
4038 Elf_Internal_Shdr **i_shdrp = elf_elfsections (abfd);
4040 Elf_Internal_Shdr *hdr;
4041 int maxindex = elf_numsections (abfd);
4043 if (elf_section_data (asect) != NULL
4044 && elf_section_data (asect)->this_idx != 0)
4045 return elf_section_data (asect)->this_idx;
4047 if (bfd_is_abs_section (asect))
4049 if (bfd_is_com_section (asect))
4051 if (bfd_is_und_section (asect))
4054 for (index = 1; index < maxindex; index++)
4056 hdr = i_shdrp[index];
4057 if (hdr != NULL && hdr->bfd_section == asect)
4061 if (bed->elf_backend_section_from_bfd_section)
4063 for (index = 0; index < maxindex; index++)
4067 hdr = i_shdrp[index];
4072 if ((*bed->elf_backend_section_from_bfd_section)
4073 (abfd, hdr, asect, &retval))
4078 bfd_set_error (bfd_error_nonrepresentable_section);
4083 /* Given a BFD symbol, return the index in the ELF symbol table, or -1
4087 _bfd_elf_symbol_from_bfd_symbol (abfd, asym_ptr_ptr)
4089 asymbol **asym_ptr_ptr;
4091 asymbol *asym_ptr = *asym_ptr_ptr;
4093 flagword flags = asym_ptr->flags;
4095 /* When gas creates relocations against local labels, it creates its
4096 own symbol for the section, but does put the symbol into the
4097 symbol chain, so udata is 0. When the linker is generating
4098 relocatable output, this section symbol may be for one of the
4099 input sections rather than the output section. */
4100 if (asym_ptr->udata.i == 0
4101 && (flags & BSF_SECTION_SYM)
4102 && asym_ptr->section)
4106 if (asym_ptr->section->output_section != NULL)
4107 indx = asym_ptr->section->output_section->index;
4109 indx = asym_ptr->section->index;
4110 if (indx < elf_num_section_syms (abfd)
4111 && elf_section_syms (abfd)[indx] != NULL)
4112 asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i;
4115 idx = asym_ptr->udata.i;
4119 /* This case can occur when using --strip-symbol on a symbol
4120 which is used in a relocation entry. */
4121 (*_bfd_error_handler)
4122 (_("%s: symbol `%s' required but not present"),
4123 bfd_archive_filename (abfd), bfd_asymbol_name (asym_ptr));
4124 bfd_set_error (bfd_error_no_symbols);
4131 _("elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n"),
4132 (long) asym_ptr, asym_ptr->name, idx, flags,
4133 elf_symbol_flags (flags));
4141 /* Copy private BFD data. This copies any program header information. */
4144 copy_private_bfd_data (ibfd, obfd)
4148 Elf_Internal_Ehdr * iehdr;
4149 struct elf_segment_map * map;
4150 struct elf_segment_map * map_first;
4151 struct elf_segment_map ** pointer_to_map;
4152 Elf_Internal_Phdr * segment;
4155 unsigned int num_segments;
4156 boolean phdr_included = false;
4157 bfd_vma maxpagesize;
4158 struct elf_segment_map * phdr_adjust_seg = NULL;
4159 unsigned int phdr_adjust_num = 0;
4161 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4162 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4165 if (elf_tdata (ibfd)->phdr == NULL)
4168 iehdr = elf_elfheader (ibfd);
4171 pointer_to_map = &map_first;
4173 num_segments = elf_elfheader (ibfd)->e_phnum;
4174 maxpagesize = get_elf_backend_data (obfd)->maxpagesize;
4176 /* Returns the end address of the segment + 1. */
4177 #define SEGMENT_END(segment, start) \
4178 (start + (segment->p_memsz > segment->p_filesz \
4179 ? segment->p_memsz : segment->p_filesz))
4181 /* Returns true if the given section is contained within
4182 the given segment. VMA addresses are compared. */
4183 #define IS_CONTAINED_BY_VMA(section, segment) \
4184 (section->vma >= segment->p_vaddr \
4185 && (section->vma + section->_raw_size) \
4186 <= (SEGMENT_END (segment, segment->p_vaddr)))
4188 /* Returns true if the given section is contained within
4189 the given segment. LMA addresses are compared. */
4190 #define IS_CONTAINED_BY_LMA(section, segment, base) \
4191 (section->lma >= base \
4192 && (section->lma + section->_raw_size) \
4193 <= SEGMENT_END (segment, base))
4195 /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */
4196 #define IS_COREFILE_NOTE(p, s) \
4197 (p->p_type == PT_NOTE \
4198 && bfd_get_format (ibfd) == bfd_core \
4199 && s->vma == 0 && s->lma == 0 \
4200 && (bfd_vma) s->filepos >= p->p_offset \
4201 && (bfd_vma) s->filepos + s->_raw_size \
4202 <= p->p_offset + p->p_filesz)
4204 /* The complicated case when p_vaddr is 0 is to handle the Solaris
4205 linker, which generates a PT_INTERP section with p_vaddr and
4206 p_memsz set to 0. */
4207 #define IS_SOLARIS_PT_INTERP(p, s) \
4209 && p->p_filesz > 0 \
4210 && (s->flags & SEC_HAS_CONTENTS) != 0 \
4211 && s->_raw_size > 0 \
4212 && (bfd_vma) s->filepos >= p->p_offset \
4213 && ((bfd_vma) s->filepos + s->_raw_size \
4214 <= p->p_offset + p->p_filesz))
4216 /* Decide if the given section should be included in the given segment.
4217 A section will be included if:
4218 1. It is within the address space of the segment -- we use the LMA
4219 if that is set for the segment and the VMA otherwise,
4220 2. It is an allocated segment,
4221 3. There is an output section associated with it,
4222 4. The section has not already been allocated to a previous segment. */
4223 #define INCLUDE_SECTION_IN_SEGMENT(section, segment) \
4224 (((((segment->p_paddr \
4225 ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \
4226 : IS_CONTAINED_BY_VMA (section, segment)) \
4227 || IS_SOLARIS_PT_INTERP (segment, section)) \
4228 && (section->flags & SEC_ALLOC) != 0) \
4229 || IS_COREFILE_NOTE (segment, section)) \
4230 && section->output_section != NULL \
4231 && section->segment_mark == false)
4233 /* Returns true iff seg1 starts after the end of seg2. */
4234 #define SEGMENT_AFTER_SEGMENT(seg1, seg2) \
4235 (seg1->p_vaddr >= SEGMENT_END (seg2, seg2->p_vaddr))
4237 /* Returns true iff seg1 and seg2 overlap. */
4238 #define SEGMENT_OVERLAPS(seg1, seg2) \
4239 (!(SEGMENT_AFTER_SEGMENT (seg1, seg2) || SEGMENT_AFTER_SEGMENT (seg2, seg1)))
4241 /* Initialise the segment mark field. */
4242 for (section = ibfd->sections; section != NULL; section = section->next)
4243 section->segment_mark = false;
4245 /* Scan through the segments specified in the program header
4246 of the input BFD. For this first scan we look for overlaps
4247 in the loadable segments. These can be created by weird
4248 parameters to objcopy. */
4249 for (i = 0, segment = elf_tdata (ibfd)->phdr;
4254 Elf_Internal_Phdr *segment2;
4256 if (segment->p_type != PT_LOAD)
4259 /* Determine if this segment overlaps any previous segments. */
4260 for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2 ++)
4262 bfd_signed_vma extra_length;
4264 if (segment2->p_type != PT_LOAD
4265 || ! SEGMENT_OVERLAPS (segment, segment2))
4268 /* Merge the two segments together. */
4269 if (segment2->p_vaddr < segment->p_vaddr)
4271 /* Extend SEGMENT2 to include SEGMENT and then delete
4274 SEGMENT_END (segment, segment->p_vaddr)
4275 - SEGMENT_END (segment2, segment2->p_vaddr);
4277 if (extra_length > 0)
4279 segment2->p_memsz += extra_length;
4280 segment2->p_filesz += extra_length;
4283 segment->p_type = PT_NULL;
4285 /* Since we have deleted P we must restart the outer loop. */
4287 segment = elf_tdata (ibfd)->phdr;
4292 /* Extend SEGMENT to include SEGMENT2 and then delete
4295 SEGMENT_END (segment2, segment2->p_vaddr)
4296 - SEGMENT_END (segment, segment->p_vaddr);
4298 if (extra_length > 0)
4300 segment->p_memsz += extra_length;
4301 segment->p_filesz += extra_length;
4304 segment2->p_type = PT_NULL;
4309 /* The second scan attempts to assign sections to segments. */
4310 for (i = 0, segment = elf_tdata (ibfd)->phdr;
4314 unsigned int section_count;
4315 asection ** sections;
4316 asection * output_section;
4318 bfd_vma matching_lma;
4319 bfd_vma suggested_lma;
4323 if (segment->p_type == PT_NULL)
4326 /* Compute how many sections might be placed into this segment. */
4328 for (section = ibfd->sections; section != NULL; section = section->next)
4329 if (INCLUDE_SECTION_IN_SEGMENT (section, segment))
4332 /* Allocate a segment map big enough to contain all of the
4333 sections we have selected. */
4334 amt = sizeof (struct elf_segment_map);
4335 amt += ((bfd_size_type) section_count - 1) * sizeof (asection *);
4336 map = (struct elf_segment_map *) bfd_alloc (obfd, amt);
4340 /* Initialise the fields of the segment map. Default to
4341 using the physical address of the segment in the input BFD. */
4343 map->p_type = segment->p_type;
4344 map->p_flags = segment->p_flags;
4345 map->p_flags_valid = 1;
4346 map->p_paddr = segment->p_paddr;
4347 map->p_paddr_valid = 1;
4349 /* Determine if this segment contains the ELF file header
4350 and if it contains the program headers themselves. */
4351 map->includes_filehdr = (segment->p_offset == 0
4352 && segment->p_filesz >= iehdr->e_ehsize);
4354 map->includes_phdrs = 0;
4356 if (! phdr_included || segment->p_type != PT_LOAD)
4358 map->includes_phdrs =
4359 (segment->p_offset <= (bfd_vma) iehdr->e_phoff
4360 && (segment->p_offset + segment->p_filesz
4361 >= ((bfd_vma) iehdr->e_phoff
4362 + iehdr->e_phnum * iehdr->e_phentsize)));
4364 if (segment->p_type == PT_LOAD && map->includes_phdrs)
4365 phdr_included = true;
4368 if (section_count == 0)
4370 /* Special segments, such as the PT_PHDR segment, may contain
4371 no sections, but ordinary, loadable segments should contain
4373 if (segment->p_type == PT_LOAD)
4375 (_("%s: warning: Empty loadable segment detected\n"),
4376 bfd_archive_filename (ibfd));
4379 *pointer_to_map = map;
4380 pointer_to_map = &map->next;
4385 /* Now scan the sections in the input BFD again and attempt
4386 to add their corresponding output sections to the segment map.
4387 The problem here is how to handle an output section which has
4388 been moved (ie had its LMA changed). There are four possibilities:
4390 1. None of the sections have been moved.
4391 In this case we can continue to use the segment LMA from the
4394 2. All of the sections have been moved by the same amount.
4395 In this case we can change the segment's LMA to match the LMA
4396 of the first section.
4398 3. Some of the sections have been moved, others have not.
4399 In this case those sections which have not been moved can be
4400 placed in the current segment which will have to have its size,
4401 and possibly its LMA changed, and a new segment or segments will
4402 have to be created to contain the other sections.
4404 4. The sections have been moved, but not be the same amount.
4405 In this case we can change the segment's LMA to match the LMA
4406 of the first section and we will have to create a new segment
4407 or segments to contain the other sections.
4409 In order to save time, we allocate an array to hold the section
4410 pointers that we are interested in. As these sections get assigned
4411 to a segment, they are removed from this array. */
4413 amt = (bfd_size_type) section_count * sizeof (asection *);
4414 sections = (asection **) bfd_malloc (amt);
4415 if (sections == NULL)
4418 /* Step One: Scan for segment vs section LMA conflicts.
4419 Also add the sections to the section array allocated above.
4420 Also add the sections to the current segment. In the common
4421 case, where the sections have not been moved, this means that
4422 we have completely filled the segment, and there is nothing
4428 for (j = 0, section = ibfd->sections;
4430 section = section->next)
4432 if (INCLUDE_SECTION_IN_SEGMENT (section, segment))
4434 output_section = section->output_section;
4436 sections[j ++] = section;
4438 /* The Solaris native linker always sets p_paddr to 0.
4439 We try to catch that case here, and set it to the
4441 if (segment->p_paddr == 0
4442 && segment->p_vaddr != 0
4444 && output_section->lma != 0
4445 && (output_section->vma == (segment->p_vaddr
4446 + (map->includes_filehdr
4449 + (map->includes_phdrs
4451 * iehdr->e_phentsize)
4453 map->p_paddr = segment->p_vaddr;
4455 /* Match up the physical address of the segment with the
4456 LMA address of the output section. */
4457 if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr)
4458 || IS_COREFILE_NOTE (segment, section))
4460 if (matching_lma == 0)
4461 matching_lma = output_section->lma;
4463 /* We assume that if the section fits within the segment
4464 then it does not overlap any other section within that
4466 map->sections[isec ++] = output_section;
4468 else if (suggested_lma == 0)
4469 suggested_lma = output_section->lma;
4473 BFD_ASSERT (j == section_count);
4475 /* Step Two: Adjust the physical address of the current segment,
4477 if (isec == section_count)
4479 /* All of the sections fitted within the segment as currently
4480 specified. This is the default case. Add the segment to
4481 the list of built segments and carry on to process the next
4482 program header in the input BFD. */
4483 map->count = section_count;
4484 *pointer_to_map = map;
4485 pointer_to_map = &map->next;
4492 if (matching_lma != 0)
4494 /* At least one section fits inside the current segment.
4495 Keep it, but modify its physical address to match the
4496 LMA of the first section that fitted. */
4497 map->p_paddr = matching_lma;
4501 /* None of the sections fitted inside the current segment.
4502 Change the current segment's physical address to match
4503 the LMA of the first section. */
4504 map->p_paddr = suggested_lma;
4507 /* Offset the segment physical address from the lma
4508 to allow for space taken up by elf headers. */
4509 if (map->includes_filehdr)
4510 map->p_paddr -= iehdr->e_ehsize;
4512 if (map->includes_phdrs)
4514 map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize;
4516 /* iehdr->e_phnum is just an estimate of the number
4517 of program headers that we will need. Make a note
4518 here of the number we used and the segment we chose
4519 to hold these headers, so that we can adjust the
4520 offset when we know the correct value. */
4521 phdr_adjust_num = iehdr->e_phnum;
4522 phdr_adjust_seg = map;
4526 /* Step Three: Loop over the sections again, this time assigning
4527 those that fit to the current segment and remvoing them from the
4528 sections array; but making sure not to leave large gaps. Once all
4529 possible sections have been assigned to the current segment it is
4530 added to the list of built segments and if sections still remain
4531 to be assigned, a new segment is constructed before repeating
4539 /* Fill the current segment with sections that fit. */
4540 for (j = 0; j < section_count; j++)
4542 section = sections[j];
4544 if (section == NULL)
4547 output_section = section->output_section;
4549 BFD_ASSERT (output_section != NULL);
4551 if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr)
4552 || IS_COREFILE_NOTE (segment, section))
4554 if (map->count == 0)
4556 /* If the first section in a segment does not start at
4557 the beginning of the segment, then something is
4559 if (output_section->lma !=
4561 + (map->includes_filehdr ? iehdr->e_ehsize : 0)
4562 + (map->includes_phdrs
4563 ? iehdr->e_phnum * iehdr->e_phentsize
4569 asection * prev_sec;
4571 prev_sec = map->sections[map->count - 1];
4573 /* If the gap between the end of the previous section
4574 and the start of this section is more than
4575 maxpagesize then we need to start a new segment. */
4576 if ((BFD_ALIGN (prev_sec->lma + prev_sec->_raw_size,
4578 < BFD_ALIGN (output_section->lma, maxpagesize))
4579 || ((prev_sec->lma + prev_sec->_raw_size)
4580 > output_section->lma))
4582 if (suggested_lma == 0)
4583 suggested_lma = output_section->lma;
4589 map->sections[map->count++] = output_section;
4592 section->segment_mark = true;
4594 else if (suggested_lma == 0)
4595 suggested_lma = output_section->lma;
4598 BFD_ASSERT (map->count > 0);
4600 /* Add the current segment to the list of built segments. */
4601 *pointer_to_map = map;
4602 pointer_to_map = &map->next;
4604 if (isec < section_count)
4606 /* We still have not allocated all of the sections to
4607 segments. Create a new segment here, initialise it
4608 and carry on looping. */
4609 amt = sizeof (struct elf_segment_map);
4610 amt += ((bfd_size_type) section_count - 1) * sizeof (asection *);
4611 map = (struct elf_segment_map *) bfd_alloc (obfd, amt);
4615 /* Initialise the fields of the segment map. Set the physical
4616 physical address to the LMA of the first section that has
4617 not yet been assigned. */
4619 map->p_type = segment->p_type;
4620 map->p_flags = segment->p_flags;
4621 map->p_flags_valid = 1;
4622 map->p_paddr = suggested_lma;
4623 map->p_paddr_valid = 1;
4624 map->includes_filehdr = 0;
4625 map->includes_phdrs = 0;
4628 while (isec < section_count);
4633 /* The Solaris linker creates program headers in which all the
4634 p_paddr fields are zero. When we try to objcopy or strip such a
4635 file, we get confused. Check for this case, and if we find it
4636 reset the p_paddr_valid fields. */
4637 for (map = map_first; map != NULL; map = map->next)
4638 if (map->p_paddr != 0)
4642 for (map = map_first; map != NULL; map = map->next)
4643 map->p_paddr_valid = 0;
4646 elf_tdata (obfd)->segment_map = map_first;
4648 /* If we had to estimate the number of program headers that were
4649 going to be needed, then check our estimate now and adjust
4650 the offset if necessary. */
4651 if (phdr_adjust_seg != NULL)
4655 for (count = 0, map = map_first; map != NULL; map = map->next)
4658 if (count > phdr_adjust_num)
4659 phdr_adjust_seg->p_paddr
4660 -= (count - phdr_adjust_num) * iehdr->e_phentsize;
4664 /* Final Step: Sort the segments into ascending order of physical
4666 if (map_first != NULL)
4668 struct elf_segment_map *prev;
4671 for (map = map_first->next; map != NULL; prev = map, map = map->next)
4673 /* Yes I know - its a bubble sort.... */
4674 if (map->next != NULL && (map->next->p_paddr < map->p_paddr))
4676 /* Swap map and map->next. */
4677 prev->next = map->next;
4678 map->next = map->next->next;
4679 prev->next->next = map;
4689 #undef IS_CONTAINED_BY_VMA
4690 #undef IS_CONTAINED_BY_LMA
4691 #undef IS_COREFILE_NOTE
4692 #undef IS_SOLARIS_PT_INTERP
4693 #undef INCLUDE_SECTION_IN_SEGMENT
4694 #undef SEGMENT_AFTER_SEGMENT
4695 #undef SEGMENT_OVERLAPS
4699 /* Copy private section information. This copies over the entsize
4700 field, and sometimes the info field. */
4703 _bfd_elf_copy_private_section_data (ibfd, isec, obfd, osec)
4709 Elf_Internal_Shdr *ihdr, *ohdr;
4711 if (ibfd->xvec->flavour != bfd_target_elf_flavour
4712 || obfd->xvec->flavour != bfd_target_elf_flavour)
4715 /* Copy over private BFD data if it has not already been copied.
4716 This must be done here, rather than in the copy_private_bfd_data
4717 entry point, because the latter is called after the section
4718 contents have been set, which means that the program headers have
4719 already been worked out. */
4720 if (elf_tdata (obfd)->segment_map == NULL
4721 && elf_tdata (ibfd)->phdr != NULL)
4725 /* Only set up the segments if there are no more SEC_ALLOC
4726 sections. FIXME: This won't do the right thing if objcopy is
4727 used to remove the last SEC_ALLOC section, since objcopy
4728 won't call this routine in that case. */
4729 for (s = isec->next; s != NULL; s = s->next)
4730 if ((s->flags & SEC_ALLOC) != 0)
4734 if (! copy_private_bfd_data (ibfd, obfd))
4739 ihdr = &elf_section_data (isec)->this_hdr;
4740 ohdr = &elf_section_data (osec)->this_hdr;
4742 ohdr->sh_entsize = ihdr->sh_entsize;
4744 if (ihdr->sh_type == SHT_SYMTAB
4745 || ihdr->sh_type == SHT_DYNSYM
4746 || ihdr->sh_type == SHT_GNU_verneed
4747 || ihdr->sh_type == SHT_GNU_verdef)
4748 ohdr->sh_info = ihdr->sh_info;
4750 elf_section_data (osec)->use_rela_p
4751 = elf_section_data (isec)->use_rela_p;
4756 /* Copy private symbol information. If this symbol is in a section
4757 which we did not map into a BFD section, try to map the section
4758 index correctly. We use special macro definitions for the mapped
4759 section indices; these definitions are interpreted by the
4760 swap_out_syms function. */
4762 #define MAP_ONESYMTAB (SHN_HIOS + 1)
4763 #define MAP_DYNSYMTAB (SHN_HIOS + 2)
4764 #define MAP_STRTAB (SHN_HIOS + 3)
4765 #define MAP_SHSTRTAB (SHN_HIOS + 4)
4766 #define MAP_SYM_SHNDX (SHN_HIOS + 5)
4769 _bfd_elf_copy_private_symbol_data (ibfd, isymarg, obfd, osymarg)
4775 elf_symbol_type *isym, *osym;
4777 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4778 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4781 isym = elf_symbol_from (ibfd, isymarg);
4782 osym = elf_symbol_from (obfd, osymarg);
4786 && bfd_is_abs_section (isym->symbol.section))
4790 shndx = isym->internal_elf_sym.st_shndx;
4791 if (shndx == elf_onesymtab (ibfd))
4792 shndx = MAP_ONESYMTAB;
4793 else if (shndx == elf_dynsymtab (ibfd))
4794 shndx = MAP_DYNSYMTAB;
4795 else if (shndx == elf_tdata (ibfd)->strtab_section)
4797 else if (shndx == elf_tdata (ibfd)->shstrtab_section)
4798 shndx = MAP_SHSTRTAB;
4799 else if (shndx == elf_tdata (ibfd)->symtab_shndx_section)
4800 shndx = MAP_SYM_SHNDX;
4801 osym->internal_elf_sym.st_shndx = shndx;
4807 /* Swap out the symbols. */
4810 swap_out_syms (abfd, sttp, relocatable_p)
4812 struct bfd_strtab_hash **sttp;
4815 struct elf_backend_data *bed;
4818 struct bfd_strtab_hash *stt;
4819 Elf_Internal_Shdr *symtab_hdr;
4820 Elf_Internal_Shdr *symtab_shndx_hdr;
4821 Elf_Internal_Shdr *symstrtab_hdr;
4822 char *outbound_syms;
4823 char *outbound_shndx;
4827 if (!elf_map_symbols (abfd))
4830 /* Dump out the symtabs. */
4831 stt = _bfd_elf_stringtab_init ();
4835 bed = get_elf_backend_data (abfd);
4836 symcount = bfd_get_symcount (abfd);
4837 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4838 symtab_hdr->sh_type = SHT_SYMTAB;
4839 symtab_hdr->sh_entsize = bed->s->sizeof_sym;
4840 symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1);
4841 symtab_hdr->sh_info = elf_num_locals (abfd) + 1;
4842 symtab_hdr->sh_addralign = bed->s->file_align;
4844 symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr;
4845 symstrtab_hdr->sh_type = SHT_STRTAB;
4847 amt = (bfd_size_type) (1 + symcount) * bed->s->sizeof_sym;
4848 outbound_syms = bfd_alloc (abfd, amt);
4849 if (outbound_syms == NULL)
4851 symtab_hdr->contents = (PTR) outbound_syms;
4853 outbound_shndx = NULL;
4854 symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
4855 if (symtab_shndx_hdr->sh_name != 0)
4857 amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx);
4858 outbound_shndx = bfd_alloc (abfd, amt);
4859 if (outbound_shndx == NULL)
4861 memset (outbound_shndx, 0, (unsigned long) amt);
4862 symtab_shndx_hdr->contents = outbound_shndx;
4863 symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX;
4864 symtab_shndx_hdr->sh_size = amt;
4865 symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx);
4866 symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx);
4869 /* now generate the data (for "contents") */
4871 /* Fill in zeroth symbol and swap it out. */
4872 Elf_Internal_Sym sym;
4878 sym.st_shndx = SHN_UNDEF;
4879 bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx);
4880 outbound_syms += bed->s->sizeof_sym;
4881 if (outbound_shndx != NULL)
4882 outbound_shndx += sizeof (Elf_External_Sym_Shndx);
4885 syms = bfd_get_outsymbols (abfd);
4886 for (idx = 0; idx < symcount; idx++)
4888 Elf_Internal_Sym sym;
4889 bfd_vma value = syms[idx]->value;
4890 elf_symbol_type *type_ptr;
4891 flagword flags = syms[idx]->flags;
4894 if ((flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM)
4896 /* Local section symbols have no name. */
4901 sym.st_name = (unsigned long) _bfd_stringtab_add (stt,
4904 if (sym.st_name == (unsigned long) -1)
4908 type_ptr = elf_symbol_from (abfd, syms[idx]);
4910 if ((flags & BSF_SECTION_SYM) == 0
4911 && bfd_is_com_section (syms[idx]->section))
4913 /* ELF common symbols put the alignment into the `value' field,
4914 and the size into the `size' field. This is backwards from
4915 how BFD handles it, so reverse it here. */
4916 sym.st_size = value;
4917 if (type_ptr == NULL
4918 || type_ptr->internal_elf_sym.st_value == 0)
4919 sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value));
4921 sym.st_value = type_ptr->internal_elf_sym.st_value;
4922 sym.st_shndx = _bfd_elf_section_from_bfd_section
4923 (abfd, syms[idx]->section);
4927 asection *sec = syms[idx]->section;
4930 if (sec->output_section)
4932 value += sec->output_offset;
4933 sec = sec->output_section;
4935 /* Don't add in the section vma for relocatable output. */
4936 if (! relocatable_p)
4938 sym.st_value = value;
4939 sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0;
4941 if (bfd_is_abs_section (sec)
4943 && type_ptr->internal_elf_sym.st_shndx != 0)
4945 /* This symbol is in a real ELF section which we did
4946 not create as a BFD section. Undo the mapping done
4947 by copy_private_symbol_data. */
4948 shndx = type_ptr->internal_elf_sym.st_shndx;
4952 shndx = elf_onesymtab (abfd);
4955 shndx = elf_dynsymtab (abfd);
4958 shndx = elf_tdata (abfd)->strtab_section;
4961 shndx = elf_tdata (abfd)->shstrtab_section;
4964 shndx = elf_tdata (abfd)->symtab_shndx_section;
4972 shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
4978 /* Writing this would be a hell of a lot easier if
4979 we had some decent documentation on bfd, and
4980 knew what to expect of the library, and what to
4981 demand of applications. For example, it
4982 appears that `objcopy' might not set the
4983 section of a symbol to be a section that is
4984 actually in the output file. */
4985 sec2 = bfd_get_section_by_name (abfd, sec->name);
4986 BFD_ASSERT (sec2 != 0);
4987 shndx = _bfd_elf_section_from_bfd_section (abfd, sec2);
4988 BFD_ASSERT (shndx != -1);
4992 sym.st_shndx = shndx;
4995 if ((flags & BSF_FUNCTION) != 0)
4997 else if ((flags & BSF_OBJECT) != 0)
5002 /* Processor-specific types */
5003 if (type_ptr != NULL
5004 && bed->elf_backend_get_symbol_type)
5005 type = ((*bed->elf_backend_get_symbol_type)
5006 (&type_ptr->internal_elf_sym, type));
5008 if (flags & BSF_SECTION_SYM)
5010 if (flags & BSF_GLOBAL)
5011 sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
5013 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
5015 else if (bfd_is_com_section (syms[idx]->section))
5016 sym.st_info = ELF_ST_INFO (STB_GLOBAL, type);
5017 else if (bfd_is_und_section (syms[idx]->section))
5018 sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK)
5022 else if (flags & BSF_FILE)
5023 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE);
5026 int bind = STB_LOCAL;
5028 if (flags & BSF_LOCAL)
5030 else if (flags & BSF_WEAK)
5032 else if (flags & BSF_GLOBAL)
5035 sym.st_info = ELF_ST_INFO (bind, type);
5038 if (type_ptr != NULL)
5039 sym.st_other = type_ptr->internal_elf_sym.st_other;
5043 bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx);
5044 outbound_syms += bed->s->sizeof_sym;
5045 if (outbound_shndx != NULL)
5046 outbound_shndx += sizeof (Elf_External_Sym_Shndx);
5050 symstrtab_hdr->sh_size = _bfd_stringtab_size (stt);
5051 symstrtab_hdr->sh_type = SHT_STRTAB;
5053 symstrtab_hdr->sh_flags = 0;
5054 symstrtab_hdr->sh_addr = 0;
5055 symstrtab_hdr->sh_entsize = 0;
5056 symstrtab_hdr->sh_link = 0;
5057 symstrtab_hdr->sh_info = 0;
5058 symstrtab_hdr->sh_addralign = 1;
5063 /* Return the number of bytes required to hold the symtab vector.
5065 Note that we base it on the count plus 1, since we will null terminate
5066 the vector allocated based on this size. However, the ELF symbol table
5067 always has a dummy entry as symbol #0, so it ends up even. */
5070 _bfd_elf_get_symtab_upper_bound (abfd)
5075 Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr;
5077 symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym;
5078 symtab_size = (symcount - 1 + 1) * (sizeof (asymbol *));
5084 _bfd_elf_get_dynamic_symtab_upper_bound (abfd)
5089 Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr;
5091 if (elf_dynsymtab (abfd) == 0)
5093 bfd_set_error (bfd_error_invalid_operation);
5097 symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym;
5098 symtab_size = (symcount - 1 + 1) * (sizeof (asymbol *));
5104 _bfd_elf_get_reloc_upper_bound (abfd, asect)
5105 bfd *abfd ATTRIBUTE_UNUSED;
5108 return (asect->reloc_count + 1) * sizeof (arelent *);
5111 /* Canonicalize the relocs. */
5114 _bfd_elf_canonicalize_reloc (abfd, section, relptr, symbols)
5122 struct elf_backend_data *bed = get_elf_backend_data (abfd);
5124 if (! bed->s->slurp_reloc_table (abfd, section, symbols, false))
5127 tblptr = section->relocation;
5128 for (i = 0; i < section->reloc_count; i++)
5129 *relptr++ = tblptr++;
5133 return section->reloc_count;
5137 _bfd_elf_get_symtab (abfd, alocation)
5139 asymbol **alocation;
5141 struct elf_backend_data *bed = get_elf_backend_data (abfd);
5142 long symcount = bed->s->slurp_symbol_table (abfd, alocation, false);
5145 bfd_get_symcount (abfd) = symcount;
5150 _bfd_elf_canonicalize_dynamic_symtab (abfd, alocation)
5152 asymbol **alocation;
5154 struct elf_backend_data *bed = get_elf_backend_data (abfd);
5155 return bed->s->slurp_symbol_table (abfd, alocation, true);
5158 /* Return the size required for the dynamic reloc entries. Any
5159 section that was actually installed in the BFD, and has type
5160 SHT_REL or SHT_RELA, and uses the dynamic symbol table, is
5161 considered to be a dynamic reloc section. */
5164 _bfd_elf_get_dynamic_reloc_upper_bound (abfd)
5170 if (elf_dynsymtab (abfd) == 0)
5172 bfd_set_error (bfd_error_invalid_operation);
5176 ret = sizeof (arelent *);
5177 for (s = abfd->sections; s != NULL; s = s->next)
5178 if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
5179 && (elf_section_data (s)->this_hdr.sh_type == SHT_REL
5180 || elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
5181 ret += ((s->_raw_size / elf_section_data (s)->this_hdr.sh_entsize)
5182 * sizeof (arelent *));
5187 /* Canonicalize the dynamic relocation entries. Note that we return
5188 the dynamic relocations as a single block, although they are
5189 actually associated with particular sections; the interface, which
5190 was designed for SunOS style shared libraries, expects that there
5191 is only one set of dynamic relocs. Any section that was actually
5192 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
5193 the dynamic symbol table, is considered to be a dynamic reloc
5197 _bfd_elf_canonicalize_dynamic_reloc (abfd, storage, syms)
5202 boolean (*slurp_relocs) PARAMS ((bfd *, asection *, asymbol **, boolean));
5206 if (elf_dynsymtab (abfd) == 0)
5208 bfd_set_error (bfd_error_invalid_operation);
5212 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
5214 for (s = abfd->sections; s != NULL; s = s->next)
5216 if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
5217 && (elf_section_data (s)->this_hdr.sh_type == SHT_REL
5218 || elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
5223 if (! (*slurp_relocs) (abfd, s, syms, true))
5225 count = s->_raw_size / elf_section_data (s)->this_hdr.sh_entsize;
5227 for (i = 0; i < count; i++)
5238 /* Read in the version information. */
5241 _bfd_elf_slurp_version_tables (abfd)
5244 bfd_byte *contents = NULL;
5247 if (elf_dynverdef (abfd) != 0)
5249 Elf_Internal_Shdr *hdr;
5250 Elf_External_Verdef *everdef;
5251 Elf_Internal_Verdef *iverdef;
5252 Elf_Internal_Verdef *iverdefarr;
5253 Elf_Internal_Verdef iverdefmem;
5255 unsigned int maxidx;
5257 hdr = &elf_tdata (abfd)->dynverdef_hdr;
5259 contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
5260 if (contents == NULL)
5262 if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
5263 || bfd_bread ((PTR) contents, hdr->sh_size, abfd) != hdr->sh_size)
5266 /* We know the number of entries in the section but not the maximum
5267 index. Therefore we have to run through all entries and find
5269 everdef = (Elf_External_Verdef *) contents;
5271 for (i = 0; i < hdr->sh_info; ++i)
5273 _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem);
5275 if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx)
5276 maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION);
5278 everdef = ((Elf_External_Verdef *)
5279 ((bfd_byte *) everdef + iverdefmem.vd_next));
5282 amt = (bfd_size_type) maxidx * sizeof (Elf_Internal_Verdef);
5283 elf_tdata (abfd)->verdef = (Elf_Internal_Verdef *) bfd_zalloc (abfd, amt);
5284 if (elf_tdata (abfd)->verdef == NULL)
5287 elf_tdata (abfd)->cverdefs = maxidx;
5289 everdef = (Elf_External_Verdef *) contents;
5290 iverdefarr = elf_tdata (abfd)->verdef;
5291 for (i = 0; i < hdr->sh_info; i++)
5293 Elf_External_Verdaux *everdaux;
5294 Elf_Internal_Verdaux *iverdaux;
5297 _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem);
5299 iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1];
5300 memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef));
5302 iverdef->vd_bfd = abfd;
5304 amt = (bfd_size_type) iverdef->vd_cnt * sizeof (Elf_Internal_Verdaux);
5305 iverdef->vd_auxptr = (Elf_Internal_Verdaux *) bfd_alloc (abfd, amt);
5306 if (iverdef->vd_auxptr == NULL)
5309 everdaux = ((Elf_External_Verdaux *)
5310 ((bfd_byte *) everdef + iverdef->vd_aux));
5311 iverdaux = iverdef->vd_auxptr;
5312 for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++)
5314 _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux);
5316 iverdaux->vda_nodename =
5317 bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
5318 iverdaux->vda_name);
5319 if (iverdaux->vda_nodename == NULL)
5322 if (j + 1 < iverdef->vd_cnt)
5323 iverdaux->vda_nextptr = iverdaux + 1;
5325 iverdaux->vda_nextptr = NULL;
5327 everdaux = ((Elf_External_Verdaux *)
5328 ((bfd_byte *) everdaux + iverdaux->vda_next));
5331 iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename;
5333 if (i + 1 < hdr->sh_info)
5334 iverdef->vd_nextdef = iverdef + 1;
5336 iverdef->vd_nextdef = NULL;
5338 everdef = ((Elf_External_Verdef *)
5339 ((bfd_byte *) everdef + iverdef->vd_next));
5346 if (elf_dynverref (abfd) != 0)
5348 Elf_Internal_Shdr *hdr;
5349 Elf_External_Verneed *everneed;
5350 Elf_Internal_Verneed *iverneed;
5353 hdr = &elf_tdata (abfd)->dynverref_hdr;
5355 amt = (bfd_size_type) hdr->sh_info * sizeof (Elf_Internal_Verneed);
5356 elf_tdata (abfd)->verref =
5357 (Elf_Internal_Verneed *) bfd_zalloc (abfd, amt);
5358 if (elf_tdata (abfd)->verref == NULL)
5361 elf_tdata (abfd)->cverrefs = hdr->sh_info;
5363 contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
5364 if (contents == NULL)
5366 if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
5367 || bfd_bread ((PTR) contents, hdr->sh_size, abfd) != hdr->sh_size)
5370 everneed = (Elf_External_Verneed *) contents;
5371 iverneed = elf_tdata (abfd)->verref;
5372 for (i = 0; i < hdr->sh_info; i++, iverneed++)
5374 Elf_External_Vernaux *evernaux;
5375 Elf_Internal_Vernaux *ivernaux;
5378 _bfd_elf_swap_verneed_in (abfd, everneed, iverneed);
5380 iverneed->vn_bfd = abfd;
5382 iverneed->vn_filename =
5383 bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
5385 if (iverneed->vn_filename == NULL)
5388 amt = iverneed->vn_cnt;
5389 amt *= sizeof (Elf_Internal_Vernaux);
5390 iverneed->vn_auxptr = (Elf_Internal_Vernaux *) bfd_alloc (abfd, amt);
5392 evernaux = ((Elf_External_Vernaux *)
5393 ((bfd_byte *) everneed + iverneed->vn_aux));
5394 ivernaux = iverneed->vn_auxptr;
5395 for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++)
5397 _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux);
5399 ivernaux->vna_nodename =
5400 bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
5401 ivernaux->vna_name);
5402 if (ivernaux->vna_nodename == NULL)
5405 if (j + 1 < iverneed->vn_cnt)
5406 ivernaux->vna_nextptr = ivernaux + 1;
5408 ivernaux->vna_nextptr = NULL;
5410 evernaux = ((Elf_External_Vernaux *)
5411 ((bfd_byte *) evernaux + ivernaux->vna_next));
5414 if (i + 1 < hdr->sh_info)
5415 iverneed->vn_nextref = iverneed + 1;
5417 iverneed->vn_nextref = NULL;
5419 everneed = ((Elf_External_Verneed *)
5420 ((bfd_byte *) everneed + iverneed->vn_next));
5430 if (contents == NULL)
5436 _bfd_elf_make_empty_symbol (abfd)
5439 elf_symbol_type *newsym;
5440 bfd_size_type amt = sizeof (elf_symbol_type);
5442 newsym = (elf_symbol_type *) bfd_zalloc (abfd, amt);
5447 newsym->symbol.the_bfd = abfd;
5448 return &newsym->symbol;
5453 _bfd_elf_get_symbol_info (ignore_abfd, symbol, ret)
5454 bfd *ignore_abfd ATTRIBUTE_UNUSED;
5458 bfd_symbol_info (symbol, ret);
5461 /* Return whether a symbol name implies a local symbol. Most targets
5462 use this function for the is_local_label_name entry point, but some
5466 _bfd_elf_is_local_label_name (abfd, name)
5467 bfd *abfd ATTRIBUTE_UNUSED;
5470 /* Normal local symbols start with ``.L''. */
5471 if (name[0] == '.' && name[1] == 'L')
5474 /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate
5475 DWARF debugging symbols starting with ``..''. */
5476 if (name[0] == '.' && name[1] == '.')
5479 /* gcc will sometimes generate symbols beginning with ``_.L_'' when
5480 emitting DWARF debugging output. I suspect this is actually a
5481 small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call
5482 ASM_GENERATE_INTERNAL_LABEL, and this causes the leading
5483 underscore to be emitted on some ELF targets). For ease of use,
5484 we treat such symbols as local. */
5485 if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_')
5492 _bfd_elf_get_lineno (ignore_abfd, symbol)
5493 bfd *ignore_abfd ATTRIBUTE_UNUSED;
5494 asymbol *symbol ATTRIBUTE_UNUSED;
5501 _bfd_elf_set_arch_mach (abfd, arch, machine)
5503 enum bfd_architecture arch;
5504 unsigned long machine;
5506 /* If this isn't the right architecture for this backend, and this
5507 isn't the generic backend, fail. */
5508 if (arch != get_elf_backend_data (abfd)->arch
5509 && arch != bfd_arch_unknown
5510 && get_elf_backend_data (abfd)->arch != bfd_arch_unknown)
5513 return bfd_default_set_arch_mach (abfd, arch, machine);
5516 /* Find the function to a particular section and offset,
5517 for error reporting. */
5520 elf_find_function (abfd, section, symbols, offset,
5521 filename_ptr, functionname_ptr)
5522 bfd *abfd ATTRIBUTE_UNUSED;
5526 const char **filename_ptr;
5527 const char **functionname_ptr;
5529 const char *filename;
5538 for (p = symbols; *p != NULL; p++)
5542 q = (elf_symbol_type *) *p;
5544 if (bfd_get_section (&q->symbol) != section)
5547 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
5552 filename = bfd_asymbol_name (&q->symbol);
5556 if (q->symbol.section == section
5557 && q->symbol.value >= low_func
5558 && q->symbol.value <= offset)
5560 func = (asymbol *) q;
5561 low_func = q->symbol.value;
5571 *filename_ptr = filename;
5572 if (functionname_ptr)
5573 *functionname_ptr = bfd_asymbol_name (func);
5578 /* Find the nearest line to a particular section and offset,
5579 for error reporting. */
5582 _bfd_elf_find_nearest_line (abfd, section, symbols, offset,
5583 filename_ptr, functionname_ptr, line_ptr)
5588 const char **filename_ptr;
5589 const char **functionname_ptr;
5590 unsigned int *line_ptr;
5594 if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset,
5595 filename_ptr, functionname_ptr,
5598 if (!*functionname_ptr)
5599 elf_find_function (abfd, section, symbols, offset,
5600 *filename_ptr ? NULL : filename_ptr,
5606 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
5607 filename_ptr, functionname_ptr,
5609 &elf_tdata (abfd)->dwarf2_find_line_info))
5611 if (!*functionname_ptr)
5612 elf_find_function (abfd, section, symbols, offset,
5613 *filename_ptr ? NULL : filename_ptr,
5619 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
5620 &found, filename_ptr,
5621 functionname_ptr, line_ptr,
5622 &elf_tdata (abfd)->line_info))
5627 if (symbols == NULL)
5630 if (! elf_find_function (abfd, section, symbols, offset,
5631 filename_ptr, functionname_ptr))
5639 _bfd_elf_sizeof_headers (abfd, reloc)
5645 ret = get_elf_backend_data (abfd)->s->sizeof_ehdr;
5647 ret += get_program_header_size (abfd);
5652 _bfd_elf_set_section_contents (abfd, section, location, offset, count)
5657 bfd_size_type count;
5659 Elf_Internal_Shdr *hdr;
5662 if (! abfd->output_has_begun
5663 && ! _bfd_elf_compute_section_file_positions
5664 (abfd, (struct bfd_link_info *) NULL))
5667 hdr = &elf_section_data (section)->this_hdr;
5668 pos = hdr->sh_offset + offset;
5669 if (bfd_seek (abfd, pos, SEEK_SET) != 0
5670 || bfd_bwrite (location, count, abfd) != count)
5677 _bfd_elf_no_info_to_howto (abfd, cache_ptr, dst)
5678 bfd *abfd ATTRIBUTE_UNUSED;
5679 arelent *cache_ptr ATTRIBUTE_UNUSED;
5680 Elf_Internal_Rela *dst ATTRIBUTE_UNUSED;
5687 _bfd_elf_no_info_to_howto_rel (abfd, cache_ptr, dst)
5690 Elf_Internal_Rel *dst;
5696 /* Try to convert a non-ELF reloc into an ELF one. */
5699 _bfd_elf_validate_reloc (abfd, areloc)
5703 /* Check whether we really have an ELF howto. */
5705 if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec)
5707 bfd_reloc_code_real_type code;
5708 reloc_howto_type *howto;
5710 /* Alien reloc: Try to determine its type to replace it with an
5711 equivalent ELF reloc. */
5713 if (areloc->howto->pc_relative)
5715 switch (areloc->howto->bitsize)
5718 code = BFD_RELOC_8_PCREL;
5721 code = BFD_RELOC_12_PCREL;
5724 code = BFD_RELOC_16_PCREL;
5727 code = BFD_RELOC_24_PCREL;
5730 code = BFD_RELOC_32_PCREL;
5733 code = BFD_RELOC_64_PCREL;
5739 howto = bfd_reloc_type_lookup (abfd, code);
5741 if (areloc->howto->pcrel_offset != howto->pcrel_offset)
5743 if (howto->pcrel_offset)
5744 areloc->addend += areloc->address;
5746 areloc->addend -= areloc->address; /* addend is unsigned!! */
5751 switch (areloc->howto->bitsize)
5757 code = BFD_RELOC_14;
5760 code = BFD_RELOC_16;
5763 code = BFD_RELOC_26;
5766 code = BFD_RELOC_32;
5769 code = BFD_RELOC_64;
5775 howto = bfd_reloc_type_lookup (abfd, code);
5779 areloc->howto = howto;
5787 (*_bfd_error_handler)
5788 (_("%s: unsupported relocation type %s"),
5789 bfd_archive_filename (abfd), areloc->howto->name);
5790 bfd_set_error (bfd_error_bad_value);
5795 _bfd_elf_close_and_cleanup (abfd)
5798 if (bfd_get_format (abfd) == bfd_object)
5800 if (elf_shstrtab (abfd) != NULL)
5801 _bfd_elf_strtab_free (elf_shstrtab (abfd));
5804 return _bfd_generic_close_and_cleanup (abfd);
5807 /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY
5808 in the relocation's offset. Thus we cannot allow any sort of sanity
5809 range-checking to interfere. There is nothing else to do in processing
5812 bfd_reloc_status_type
5813 _bfd_elf_rel_vtable_reloc_fn (abfd, re, symbol, data, is, obfd, errmsg)
5814 bfd *abfd ATTRIBUTE_UNUSED;
5815 arelent *re ATTRIBUTE_UNUSED;
5816 struct symbol_cache_entry *symbol ATTRIBUTE_UNUSED;
5817 PTR data ATTRIBUTE_UNUSED;
5818 asection *is ATTRIBUTE_UNUSED;
5819 bfd *obfd ATTRIBUTE_UNUSED;
5820 char **errmsg ATTRIBUTE_UNUSED;
5822 return bfd_reloc_ok;
5825 /* Elf core file support. Much of this only works on native
5826 toolchains, since we rely on knowing the
5827 machine-dependent procfs structure in order to pick
5828 out details about the corefile. */
5830 #ifdef HAVE_SYS_PROCFS_H
5831 # include <sys/procfs.h>
5834 /* FIXME: this is kinda wrong, but it's what gdb wants. */
5837 elfcore_make_pid (abfd)
5840 return ((elf_tdata (abfd)->core_lwpid << 16)
5841 + (elf_tdata (abfd)->core_pid));
5844 /* If there isn't a section called NAME, make one, using
5845 data from SECT. Note, this function will generate a
5846 reference to NAME, so you shouldn't deallocate or
5850 elfcore_maybe_make_sect (abfd, name, sect)
5857 if (bfd_get_section_by_name (abfd, name) != NULL)
5860 sect2 = bfd_make_section (abfd, name);
5864 sect2->_raw_size = sect->_raw_size;
5865 sect2->filepos = sect->filepos;
5866 sect2->flags = sect->flags;
5867 sect2->alignment_power = sect->alignment_power;
5871 /* Create a pseudosection containing SIZE bytes at FILEPOS. This
5872 actually creates up to two pseudosections:
5873 - For the single-threaded case, a section named NAME, unless
5874 such a section already exists.
5875 - For the multi-threaded case, a section named "NAME/PID", where
5876 PID is elfcore_make_pid (abfd).
5877 Both pseudosections have identical contents. */
5879 _bfd_elfcore_make_pseudosection (abfd, name, size, filepos)
5886 char *threaded_name;
5889 /* Build the section name. */
5891 sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd));
5892 threaded_name = bfd_alloc (abfd, (bfd_size_type) strlen (buf) + 1);
5893 if (threaded_name == NULL)
5895 strcpy (threaded_name, buf);
5897 sect = bfd_make_section (abfd, threaded_name);
5900 sect->_raw_size = size;
5901 sect->filepos = filepos;
5902 sect->flags = SEC_HAS_CONTENTS;
5903 sect->alignment_power = 2;
5905 return elfcore_maybe_make_sect (abfd, name, sect);
5908 /* prstatus_t exists on:
5910 linux 2.[01] + glibc
5914 #if defined (HAVE_PRSTATUS_T)
5915 static boolean elfcore_grok_prstatus PARAMS ((bfd *, Elf_Internal_Note *));
5918 elfcore_grok_prstatus (abfd, note)
5920 Elf_Internal_Note *note;
5925 if (note->descsz == sizeof (prstatus_t))
5929 raw_size = sizeof (prstat.pr_reg);
5930 offset = offsetof (prstatus_t, pr_reg);
5931 memcpy (&prstat, note->descdata, sizeof (prstat));
5933 /* Do not overwrite the core signal if it
5934 has already been set by another thread. */
5935 if (elf_tdata (abfd)->core_signal == 0)
5936 elf_tdata (abfd)->core_signal = prstat.pr_cursig;
5937 elf_tdata (abfd)->core_pid = prstat.pr_pid;
5939 /* pr_who exists on:
5942 pr_who doesn't exist on:
5945 #if defined (HAVE_PRSTATUS_T_PR_WHO)
5946 elf_tdata (abfd)->core_lwpid = prstat.pr_who;
5949 #if defined (HAVE_PRSTATUS32_T)
5950 else if (note->descsz == sizeof (prstatus32_t))
5952 /* 64-bit host, 32-bit corefile */
5953 prstatus32_t prstat;
5955 raw_size = sizeof (prstat.pr_reg);
5956 offset = offsetof (prstatus32_t, pr_reg);
5957 memcpy (&prstat, note->descdata, sizeof (prstat));
5959 /* Do not overwrite the core signal if it
5960 has already been set by another thread. */
5961 if (elf_tdata (abfd)->core_signal == 0)
5962 elf_tdata (abfd)->core_signal = prstat.pr_cursig;
5963 elf_tdata (abfd)->core_pid = prstat.pr_pid;
5965 /* pr_who exists on:
5968 pr_who doesn't exist on:
5971 #if defined (HAVE_PRSTATUS32_T_PR_WHO)
5972 elf_tdata (abfd)->core_lwpid = prstat.pr_who;
5975 #endif /* HAVE_PRSTATUS32_T */
5978 /* Fail - we don't know how to handle any other
5979 note size (ie. data object type). */
5983 /* Make a ".reg/999" section and a ".reg" section. */
5984 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
5985 raw_size, note->descpos + offset);
5987 #endif /* defined (HAVE_PRSTATUS_T) */
5989 /* Create a pseudosection containing the exact contents of NOTE. */
5991 elfcore_make_note_pseudosection (abfd, name, note)
5994 Elf_Internal_Note *note;
5996 return _bfd_elfcore_make_pseudosection (abfd, name,
5997 note->descsz, note->descpos);
6000 /* There isn't a consistent prfpregset_t across platforms,
6001 but it doesn't matter, because we don't have to pick this
6002 data structure apart. */
6005 elfcore_grok_prfpreg (abfd, note)
6007 Elf_Internal_Note *note;
6009 return elfcore_make_note_pseudosection (abfd, ".reg2", note);
6012 /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note
6013 type of 5 (NT_PRXFPREG). Just include the whole note's contents
6017 elfcore_grok_prxfpreg (abfd, note)
6019 Elf_Internal_Note *note;
6021 return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note);
6024 #if defined (HAVE_PRPSINFO_T)
6025 typedef prpsinfo_t elfcore_psinfo_t;
6026 #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */
6027 typedef prpsinfo32_t elfcore_psinfo32_t;
6031 #if defined (HAVE_PSINFO_T)
6032 typedef psinfo_t elfcore_psinfo_t;
6033 #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */
6034 typedef psinfo32_t elfcore_psinfo32_t;
6038 /* return a malloc'ed copy of a string at START which is at
6039 most MAX bytes long, possibly without a terminating '\0'.
6040 the copy will always have a terminating '\0'. */
6043 _bfd_elfcore_strndup (abfd, start, max)
6049 char *end = memchr (start, '\0', max);
6057 dups = bfd_alloc (abfd, (bfd_size_type) len + 1);
6061 memcpy (dups, start, len);
6067 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
6068 static boolean elfcore_grok_psinfo PARAMS ((bfd *, Elf_Internal_Note *));
6071 elfcore_grok_psinfo (abfd, note)
6073 Elf_Internal_Note *note;
6075 if (note->descsz == sizeof (elfcore_psinfo_t))
6077 elfcore_psinfo_t psinfo;
6079 memcpy (&psinfo, note->descdata, sizeof (psinfo));
6081 elf_tdata (abfd)->core_program
6082 = _bfd_elfcore_strndup (abfd, psinfo.pr_fname,
6083 sizeof (psinfo.pr_fname));
6085 elf_tdata (abfd)->core_command
6086 = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs,
6087 sizeof (psinfo.pr_psargs));
6089 #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T)
6090 else if (note->descsz == sizeof (elfcore_psinfo32_t))
6092 /* 64-bit host, 32-bit corefile */
6093 elfcore_psinfo32_t psinfo;
6095 memcpy (&psinfo, note->descdata, sizeof (psinfo));
6097 elf_tdata (abfd)->core_program
6098 = _bfd_elfcore_strndup (abfd, psinfo.pr_fname,
6099 sizeof (psinfo.pr_fname));
6101 elf_tdata (abfd)->core_command
6102 = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs,
6103 sizeof (psinfo.pr_psargs));
6109 /* Fail - we don't know how to handle any other
6110 note size (ie. data object type). */
6114 /* Note that for some reason, a spurious space is tacked
6115 onto the end of the args in some (at least one anyway)
6116 implementations, so strip it off if it exists. */
6119 char *command = elf_tdata (abfd)->core_command;
6120 int n = strlen (command);
6122 if (0 < n && command[n - 1] == ' ')
6123 command[n - 1] = '\0';
6128 #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */
6130 #if defined (HAVE_PSTATUS_T)
6132 elfcore_grok_pstatus (abfd, note)
6134 Elf_Internal_Note *note;
6136 if (note->descsz == sizeof (pstatus_t)
6137 #if defined (HAVE_PXSTATUS_T)
6138 || note->descsz == sizeof (pxstatus_t)
6144 memcpy (&pstat, note->descdata, sizeof (pstat));
6146 elf_tdata (abfd)->core_pid = pstat.pr_pid;
6148 #if defined (HAVE_PSTATUS32_T)
6149 else if (note->descsz == sizeof (pstatus32_t))
6151 /* 64-bit host, 32-bit corefile */
6154 memcpy (&pstat, note->descdata, sizeof (pstat));
6156 elf_tdata (abfd)->core_pid = pstat.pr_pid;
6159 /* Could grab some more details from the "representative"
6160 lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an
6161 NT_LWPSTATUS note, presumably. */
6165 #endif /* defined (HAVE_PSTATUS_T) */
6167 #if defined (HAVE_LWPSTATUS_T)
6169 elfcore_grok_lwpstatus (abfd, note)
6171 Elf_Internal_Note *note;
6173 lwpstatus_t lwpstat;
6178 if (note->descsz != sizeof (lwpstat)
6179 #if defined (HAVE_LWPXSTATUS_T)
6180 && note->descsz != sizeof (lwpxstatus_t)
6185 memcpy (&lwpstat, note->descdata, sizeof (lwpstat));
6187 elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid;
6188 elf_tdata (abfd)->core_signal = lwpstat.pr_cursig;
6190 /* Make a ".reg/999" section. */
6192 sprintf (buf, ".reg/%d", elfcore_make_pid (abfd));
6193 name = bfd_alloc (abfd, (bfd_size_type) strlen (buf) + 1);
6198 sect = bfd_make_section (abfd, name);
6202 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
6203 sect->_raw_size = sizeof (lwpstat.pr_context.uc_mcontext.gregs);
6204 sect->filepos = note->descpos
6205 + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs);
6208 #if defined (HAVE_LWPSTATUS_T_PR_REG)
6209 sect->_raw_size = sizeof (lwpstat.pr_reg);
6210 sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg);
6213 sect->flags = SEC_HAS_CONTENTS;
6214 sect->alignment_power = 2;
6216 if (!elfcore_maybe_make_sect (abfd, ".reg", sect))
6219 /* Make a ".reg2/999" section */
6221 sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd));
6222 name = bfd_alloc (abfd, (bfd_size_type) strlen (buf) + 1);
6227 sect = bfd_make_section (abfd, name);
6231 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
6232 sect->_raw_size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs);
6233 sect->filepos = note->descpos
6234 + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs);
6237 #if defined (HAVE_LWPSTATUS_T_PR_FPREG)
6238 sect->_raw_size = sizeof (lwpstat.pr_fpreg);
6239 sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg);
6242 sect->flags = SEC_HAS_CONTENTS;
6243 sect->alignment_power = 2;
6245 return elfcore_maybe_make_sect (abfd, ".reg2", sect);
6247 #endif /* defined (HAVE_LWPSTATUS_T) */
6249 #if defined (HAVE_WIN32_PSTATUS_T)
6251 elfcore_grok_win32pstatus (abfd, note)
6253 Elf_Internal_Note *note;
6258 win32_pstatus_t pstatus;
6260 if (note->descsz < sizeof (pstatus))
6263 memcpy (&pstatus, note->descdata, note->descsz);
6265 switch (pstatus.data_type)
6267 case NOTE_INFO_PROCESS:
6268 /* FIXME: need to add ->core_command. */
6269 elf_tdata (abfd)->core_signal = pstatus.data.process_info.signal;
6270 elf_tdata (abfd)->core_pid = pstatus.data.process_info.pid;
6273 case NOTE_INFO_THREAD:
6274 /* Make a ".reg/999" section. */
6275 sprintf (buf, ".reg/%d", pstatus.data.thread_info.tid);
6277 name = bfd_alloc (abfd, (bfd_size_type) strlen (buf) + 1);
6283 sect = bfd_make_section (abfd, name);
6287 sect->_raw_size = sizeof (pstatus.data.thread_info.thread_context);
6288 sect->filepos = (note->descpos
6289 + offsetof (struct win32_pstatus,
6290 data.thread_info.thread_context));
6291 sect->flags = SEC_HAS_CONTENTS;
6292 sect->alignment_power = 2;
6294 if (pstatus.data.thread_info.is_active_thread)
6295 if (! elfcore_maybe_make_sect (abfd, ".reg", sect))
6299 case NOTE_INFO_MODULE:
6300 /* Make a ".module/xxxxxxxx" section. */
6301 sprintf (buf, ".module/%08x", pstatus.data.module_info.base_address);
6303 name = bfd_alloc (abfd, (bfd_size_type) strlen (buf) + 1);
6309 sect = bfd_make_section (abfd, name);
6314 sect->_raw_size = note->descsz;
6315 sect->filepos = note->descpos;
6316 sect->flags = SEC_HAS_CONTENTS;
6317 sect->alignment_power = 2;
6326 #endif /* HAVE_WIN32_PSTATUS_T */
6329 elfcore_grok_note (abfd, note)
6331 Elf_Internal_Note *note;
6333 struct elf_backend_data *bed = get_elf_backend_data (abfd);
6341 if (bed->elf_backend_grok_prstatus)
6342 if ((*bed->elf_backend_grok_prstatus) (abfd, note))
6344 #if defined (HAVE_PRSTATUS_T)
6345 return elfcore_grok_prstatus (abfd, note);
6350 #if defined (HAVE_PSTATUS_T)
6352 return elfcore_grok_pstatus (abfd, note);
6355 #if defined (HAVE_LWPSTATUS_T)
6357 return elfcore_grok_lwpstatus (abfd, note);
6360 case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */
6361 return elfcore_grok_prfpreg (abfd, note);
6363 #if defined (HAVE_WIN32_PSTATUS_T)
6364 case NT_WIN32PSTATUS:
6365 return elfcore_grok_win32pstatus (abfd, note);
6368 case NT_PRXFPREG: /* Linux SSE extension */
6369 if (note->namesz == 5
6370 && ! strcmp (note->namedata, "LINUX"))
6371 return elfcore_grok_prxfpreg (abfd, note);
6377 if (bed->elf_backend_grok_psinfo)
6378 if ((*bed->elf_backend_grok_psinfo) (abfd, note))
6380 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
6381 return elfcore_grok_psinfo (abfd, note);
6389 elfcore_netbsd_get_lwpid (note, lwpidp)
6390 Elf_Internal_Note *note;
6395 cp = strchr (note->namedata, '@');
6405 elfcore_grok_netbsd_procinfo (abfd, note)
6407 Elf_Internal_Note *note;
6410 /* Signal number at offset 0x08. */
6411 elf_tdata (abfd)->core_signal
6412 = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08);
6414 /* Process ID at offset 0x50. */
6415 elf_tdata (abfd)->core_pid
6416 = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50);
6418 /* Command name at 0x7c (max 32 bytes, including nul). */
6419 elf_tdata (abfd)->core_command
6420 = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31);
6426 elfcore_grok_netbsd_note (abfd, note)
6428 Elf_Internal_Note *note;
6432 if (elfcore_netbsd_get_lwpid (note, &lwp))
6433 elf_tdata (abfd)->core_lwpid = lwp;
6435 if (note->type == 1)
6437 /* NetBSD-specific core "procinfo". Note that we expect to
6438 find this note before any of the others, which is fine,
6439 since the kernel writes this note out first when it
6440 creates a core file. */
6442 return elfcore_grok_netbsd_procinfo (abfd, note);
6445 /* There are not currently any other machine-independent notes defined
6446 for NetBSD ELF core files. If the note type is less than the start
6447 of the machine-dependent note types, we don't understand it. */
6449 if (note->type < 32)
6453 switch (bfd_get_arch (abfd))
6455 /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and
6456 PT_GETFPREGS == mach+2. */
6458 case bfd_arch_alpha:
6459 case bfd_arch_sparc:
6463 return elfcore_make_note_pseudosection (abfd, ".reg", note);
6466 return elfcore_make_note_pseudosection (abfd, ".reg2", note);
6472 /* On all other arch's, PT_GETREGS == mach+1 and
6473 PT_GETFPREGS == mach+3. */
6479 return elfcore_make_note_pseudosection (abfd, ".reg", note);
6482 return elfcore_make_note_pseudosection (abfd, ".reg2", note);
6491 /* Function: elfcore_write_note
6498 size of data for note
6501 End of buffer containing note. */
6504 elfcore_write_note (abfd, buf, bufsiz, name, type, input, size)
6513 Elf_External_Note *xnp;
6514 int namesz = strlen (name);
6515 int newspace = BFD_ALIGN (sizeof (Elf_External_Note) + size + namesz - 1, 4);
6518 p = realloc (buf, *bufsiz + newspace);
6520 *bufsiz += newspace;
6521 xnp = (Elf_External_Note *) dest;
6522 H_PUT_32 (abfd, namesz, xnp->namesz);
6523 H_PUT_32 (abfd, size, xnp->descsz);
6524 H_PUT_32 (abfd, type, xnp->type);
6525 strcpy (xnp->name, name);
6526 memcpy (xnp->name + BFD_ALIGN (namesz, 4), input, size);
6530 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
6532 elfcore_write_prpsinfo (abfd, buf, bufsiz, fname, psargs)
6540 char *note_name = "CORE";
6542 #if defined (HAVE_PSINFO_T)
6544 note_type = NT_PSINFO;
6547 note_type = NT_PRPSINFO;
6550 memset (&data, 0, sizeof (data));
6551 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
6552 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
6553 return elfcore_write_note (abfd, buf, bufsiz,
6554 note_name, note_type, &data, sizeof (data));
6556 #endif /* PSINFO_T or PRPSINFO_T */
6558 #if defined (HAVE_PRSTATUS_T)
6560 elfcore_write_prstatus (abfd, buf, bufsiz, pid, cursig, gregs)
6569 char *note_name = "CORE";
6571 memset (&prstat, 0, sizeof (prstat));
6572 prstat.pr_pid = pid;
6573 prstat.pr_cursig = cursig;
6574 memcpy (prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
6575 return elfcore_write_note (abfd, buf, bufsiz,
6576 note_name, NT_PRSTATUS, &prstat, sizeof (prstat));
6578 #endif /* HAVE_PRSTATUS_T */
6580 #if defined (HAVE_PSTATUS_T)
6582 elfcore_write_pstatus (abfd, buf, bufsiz, pid, cursig, gregs)
6591 char *note_name = "CORE";
6593 memset (&pstat, 0, sizeof (prstat));
6595 memcpy (pstat.pr_reg, gregs, sizeof (pstat.pr_reg));
6596 return elfcore_write_note (abfd, buf, bufsiz,
6597 note_name, NT_PSTATUS, &pstat, sizeof (pstat));
6599 #endif /* HAVE_PSTATUS_T */
6602 elfcore_write_prfpreg (abfd, buf, bufsiz, fpregs, size)
6609 char *note_name = "CORE";
6610 return elfcore_write_note (abfd, buf, bufsiz,
6611 note_name, NT_FPREGSET, fpregs, size);
6615 elfcore_write_prxfpreg (abfd, buf, bufsiz, xfpregs, size)
6622 char *note_name = "LINUX";
6623 return elfcore_write_note (abfd, buf, bufsiz,
6624 note_name, NT_PRXFPREG, xfpregs, size);
6628 elfcore_read_notes (abfd, offset, size)
6639 if (bfd_seek (abfd, offset, SEEK_SET) != 0)
6642 buf = bfd_malloc (size);
6646 if (bfd_bread (buf, size, abfd) != size)
6654 while (p < buf + size)
6656 /* FIXME: bad alignment assumption. */
6657 Elf_External_Note *xnp = (Elf_External_Note *) p;
6658 Elf_Internal_Note in;
6660 in.type = H_GET_32 (abfd, xnp->type);
6662 in.namesz = H_GET_32 (abfd, xnp->namesz);
6663 in.namedata = xnp->name;
6665 in.descsz = H_GET_32 (abfd, xnp->descsz);
6666 in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4);
6667 in.descpos = offset + (in.descdata - buf);
6669 if (strncmp (in.namedata, "NetBSD-CORE", 11) == 0)
6671 if (! elfcore_grok_netbsd_note (abfd, &in))
6676 if (! elfcore_grok_note (abfd, &in))
6680 p = in.descdata + BFD_ALIGN (in.descsz, 4);
6687 /* Providing external access to the ELF program header table. */
6689 /* Return an upper bound on the number of bytes required to store a
6690 copy of ABFD's program header table entries. Return -1 if an error
6691 occurs; bfd_get_error will return an appropriate code. */
6694 bfd_get_elf_phdr_upper_bound (abfd)
6697 if (abfd->xvec->flavour != bfd_target_elf_flavour)
6699 bfd_set_error (bfd_error_wrong_format);
6703 return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr);
6706 /* Copy ABFD's program header table entries to *PHDRS. The entries
6707 will be stored as an array of Elf_Internal_Phdr structures, as
6708 defined in include/elf/internal.h. To find out how large the
6709 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
6711 Return the number of program header table entries read, or -1 if an
6712 error occurs; bfd_get_error will return an appropriate code. */
6715 bfd_get_elf_phdrs (abfd, phdrs)
6721 if (abfd->xvec->flavour != bfd_target_elf_flavour)
6723 bfd_set_error (bfd_error_wrong_format);
6727 num_phdrs = elf_elfheader (abfd)->e_phnum;
6728 memcpy (phdrs, elf_tdata (abfd)->phdr,
6729 num_phdrs * sizeof (Elf_Internal_Phdr));
6735 _bfd_elf_sprintf_vma (abfd, buf, value)
6736 bfd *abfd ATTRIBUTE_UNUSED;
6741 Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
6743 i_ehdrp = elf_elfheader (abfd);
6744 if (i_ehdrp == NULL)
6745 sprintf_vma (buf, value);
6748 if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64)
6750 #if BFD_HOST_64BIT_LONG
6751 sprintf (buf, "%016lx", value);
6753 sprintf (buf, "%08lx%08lx", _bfd_int64_high (value),
6754 _bfd_int64_low (value));
6758 sprintf (buf, "%08lx", (unsigned long) (value & 0xffffffff));
6761 sprintf_vma (buf, value);
6766 _bfd_elf_fprintf_vma (abfd, stream, value)
6767 bfd *abfd ATTRIBUTE_UNUSED;
6772 Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
6774 i_ehdrp = elf_elfheader (abfd);
6775 if (i_ehdrp == NULL)
6776 fprintf_vma ((FILE *) stream, value);
6779 if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64)
6781 #if BFD_HOST_64BIT_LONG
6782 fprintf ((FILE *) stream, "%016lx", value);
6784 fprintf ((FILE *) stream, "%08lx%08lx",
6785 _bfd_int64_high (value), _bfd_int64_low (value));
6789 fprintf ((FILE *) stream, "%08lx",
6790 (unsigned long) (value & 0xffffffff));
6793 fprintf_vma ((FILE *) stream, value);
6797 enum elf_reloc_type_class
6798 _bfd_elf_reloc_type_class (rela)
6799 const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED;
6801 return reloc_class_normal;
6804 /* For RELA architectures, return what the relocation value for
6805 relocation against a local symbol. */
6808 _bfd_elf_rela_local_sym (abfd, sym, sec, rel)
6810 Elf_Internal_Sym *sym;
6812 Elf_Internal_Rela *rel;
6816 relocation = (sec->output_section->vma
6817 + sec->output_offset
6819 if ((sec->flags & SEC_MERGE)
6820 && ELF_ST_TYPE (sym->st_info) == STT_SECTION
6821 && elf_section_data (sec)->sec_info_type == ELF_INFO_TYPE_MERGE)
6827 _bfd_merged_section_offset (abfd, &msec,
6828 elf_section_data (sec)->sec_info,
6829 sym->st_value + rel->r_addend,
6832 rel->r_addend += msec->output_section->vma + msec->output_offset;
6838 _bfd_elf_rel_local_sym (abfd, sym, psec, addend)
6840 Elf_Internal_Sym *sym;
6844 asection *sec = *psec;
6846 if (elf_section_data (sec)->sec_info_type != ELF_INFO_TYPE_MERGE)
6847 return sym->st_value + addend;
6849 return _bfd_merged_section_offset (abfd, psec,
6850 elf_section_data (sec)->sec_info,
6851 sym->st_value + addend, (bfd_vma) 0);
6855 _bfd_elf_section_offset (abfd, info, sec, offset)
6857 struct bfd_link_info *info;
6861 struct bfd_elf_section_data *sec_data;
6863 sec_data = elf_section_data (sec);
6864 switch (sec_data->sec_info_type)
6866 case ELF_INFO_TYPE_STABS:
6867 return _bfd_stab_section_offset
6868 (abfd, &elf_hash_table (info)->merge_info, sec, &sec_data->sec_info,
6870 case ELF_INFO_TYPE_EH_FRAME:
6871 return _bfd_elf_eh_frame_section_offset (abfd, sec, offset);