/* Set local fields. */
ret->indx = -1;
ret->dynindx = -1;
- ret->dynstr_index = 0;
- ret->elf_hash_value = 0;
- ret->weakdef = NULL;
- ret->verinfo.verdef = NULL;
- ret->vtable_entries_size = 0;
- ret->vtable_entries_used = NULL;
- ret->vtable_parent = NULL;
- ret->got = htab->init_refcount;
- ret->plt = htab->init_refcount;
- ret->size = 0;
- ret->type = STT_NOTYPE;
- ret->other = 0;
+ ret->got = ret->plt = htab->init_refcount;
+ memset (&ret->size, 0, (sizeof (struct elf_link_hash_entry)
+ - offsetof (struct elf_link_hash_entry, size)));
/* Assume that we have been called by a non-ELF symbol reader.
This flag is then reset by the code which reads an ELF input
file. This ensures that a symbol created by a non-ELF symbol
reader will have the flag set correctly. */
- ret->elf_link_hash_flags = ELF_LINK_NON_ELF;
+ ret->non_elf = 1;
}
return entry;
/* Copy down any references that we may have already seen to the
symbol which just became indirect. */
- dir->elf_link_hash_flags
- |= ind->elf_link_hash_flags & (ELF_LINK_HASH_REF_DYNAMIC
- | ELF_LINK_HASH_REF_REGULAR
- | ELF_LINK_HASH_REF_REGULAR_NONWEAK
- | ELF_LINK_NON_GOT_REF
- | ELF_LINK_HASH_NEEDS_PLT
- | ELF_LINK_POINTER_EQUALITY_NEEDED);
+ dir->ref_dynamic |= ind->ref_dynamic;
+ dir->ref_regular |= ind->ref_regular;
+ dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
+ dir->non_got_ref |= ind->non_got_ref;
+ dir->needs_plt |= ind->needs_plt;
+ dir->pointer_equality_needed |= ind->pointer_equality_needed;
if (ind->root.type != bfd_link_hash_indirect)
return;
bfd_boolean force_local)
{
h->plt = elf_hash_table (info)->init_offset;
- h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
+ h->needs_plt = 0;
if (force_local)
{
- h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL;
+ h->forced_local = 1;
if (h->dynindx != -1)
{
h->dynindx = -1;
case SHT_INIT_ARRAY: /* .init_array section. */
case SHT_FINI_ARRAY: /* .fini_array section. */
case SHT_PREINIT_ARRAY: /* .preinit_array section. */
+ case SHT_GNU_LIBLIST: /* .gnu.liblist section. */
return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
case SHT_DYNAMIC: /* Dynamic linking information. */
static struct bfd_elf_special_section const special_sections[] =
{
{ ".bss", 4, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
+ { ".gnu.linkonce.b",15, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
{ ".comment", 8, 0, SHT_PROGBITS, 0 },
{ ".data", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
{ ".data1", 6, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
{ ".rela", 5, -1, SHT_RELA, 0 },
{ ".rel", 4, -1, SHT_REL, 0 },
{ ".stabstr", 5, 3, SHT_STRTAB, 0 },
+ { ".gnu.liblist", 12, 0, SHT_GNU_LIBLIST, SHF_ALLOC },
+ { ".gnu.conflict", 13, 0, SHT_RELA, SHF_ALLOC },
{ NULL, 0, 0, 0, 0 }
};
d->this_hdr.sh_link = elf_section_data (s)->this_idx;
break;
+ case SHT_GNU_LIBLIST:
+ /* sh_link is the section header index of the prelink library
+ list
+ used for the dynamic entries, or the symbol table, or the
+ version strings. */
+ s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC)
+ ? ".dynstr" : ".gnu.libstr");
+ if (s != NULL)
+ d->this_hdr.sh_link = elf_section_data (s)->this_idx;
+ break;
+
case SHT_HASH:
case SHT_GNU_versym:
/* sh_link is the section header index of the symbol table
return m;
}
+/* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL
+ on failure. */
+
+struct elf_segment_map *
+_bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec)
+{
+ struct elf_segment_map *m;
+
+ m = bfd_zalloc (abfd, sizeof (struct elf_segment_map));
+ if (m == NULL)
+ return NULL;
+ m->next = NULL;
+ m->p_type = PT_DYNAMIC;
+ m->count = 1;
+ m->sections[0] = dynsec;
+
+ return m;
+}
+
/* Set up a mapping from BFD sections to program segments. */
static bfd_boolean
/* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */
if (dynsec != NULL)
{
- amt = sizeof (struct elf_segment_map);
- m = bfd_zalloc (abfd, amt);
+ m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
if (m == NULL)
goto error_return;
- m->next = NULL;
- m->p_type = PT_DYNAMIC;
- m->count = 1;
- m->sections[0] = dynsec;
-
*pm = m;
pm = &m->next;
}
if (alloc != 0 && count > alloc)
{
((*_bfd_error_handler)
- (_("%s: Not enough room for program headers (allocated %u, need %u)"),
- bfd_get_filename (abfd), alloc, count));
+ (_("%B: Not enough room for program headers (allocated %u, need %u)"),
+ abfd, alloc, count));
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
qsort (m->sections, (size_t) m->count, sizeof (asection *),
elf_sort_sections);
+ /* An ELF segment (described by Elf_Internal_Phdr) may contain a
+ number of sections with contents contributing to both p_filesz
+ and p_memsz, followed by a number of sections with no contents
+ that just contribute to p_memsz. In this loop, OFF tracks next
+ available file offset for PT_LOAD and PT_NOTE segments. VOFF is
+ an adjustment we use for segments that have no file contents
+ but need zero filled memory allocation. */
+ voff = 0;
p->p_type = m->p_type;
p->p_flags = m->p_flags;
if (p->p_type == PT_LOAD
- && m->count > 0
- && (m->sections[0]->flags & SEC_ALLOC) != 0)
+ && m->count > 0)
{
+ bfd_size_type align;
+ bfd_vma adjust;
+
if ((abfd->flags & D_PAGED) != 0)
- off += vma_page_aligned_bias (m->sections[0]->vma, off,
- bed->maxpagesize);
+ align = bed->maxpagesize;
else
{
- bfd_size_type align;
-
- align = 0;
+ unsigned int align_power = 0;
for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
{
- bfd_size_type secalign;
+ unsigned int secalign;
secalign = bfd_get_section_alignment (abfd, *secpp);
- if (secalign > align)
- align = secalign;
+ if (secalign > align_power)
+ align_power = secalign;
}
+ align = (bfd_size_type) 1 << align_power;
+ }
- off += vma_page_aligned_bias (m->sections[0]->vma, off,
- 1 << align);
+ adjust = vma_page_aligned_bias (m->sections[0]->vma, off, align);
+ off += adjust;
+ if (adjust != 0
+ && !m->includes_filehdr
+ && !m->includes_phdrs
+ && (ufile_ptr) off >= align)
+ {
+ /* If the first section isn't loadable, the same holds for
+ any other sections. Since the segment won't need file
+ space, we can make p_offset overlap some prior segment.
+ However, .tbss is special. If a segment starts with
+ .tbss, we need to look at the next section to decide
+ whether the segment has any loadable sections. */
+ i = 0;
+ while ((m->sections[i]->flags & SEC_LOAD) == 0)
+ {
+ if ((m->sections[i]->flags & SEC_THREAD_LOCAL) == 0
+ || ++i >= m->count)
+ {
+ off -= adjust;
+ voff = adjust - align;
+ break;
+ }
+ }
}
}
/* Make sure the .dynamic section is the first section in the
&& strcmp (m->sections[0]->name, ".dynamic") != 0)
{
_bfd_error_handler
- (_("%s: The first section in the PT_DYNAMIC segment is not the .dynamic section"),
- bfd_get_filename (abfd));
+ (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"),
+ abfd);
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
if (p->p_vaddr < (bfd_vma) off)
{
(*_bfd_error_handler)
- (_("%s: Not enough room for program headers, try linking with -N"),
- bfd_get_filename (abfd));
+ (_("%B: Not enough room for program headers, try linking with -N"),
+ abfd);
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
|| (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core))
{
if (! m->includes_filehdr && ! m->includes_phdrs)
- p->p_offset = off;
+ p->p_offset = off + voff;
else
{
file_ptr adjust;
}
}
- voff = off;
-
for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
{
asection *sec;
flags = sec->flags;
align = 1 << bfd_get_section_alignment (abfd, sec);
- /* The section may have artificial alignment forced by a
- link script. Notice this case by the gap between the
- cumulative phdr lma and the section's lma. */
- if (p->p_paddr + p->p_memsz < sec->lma)
- {
- bfd_vma adjust = sec->lma - (p->p_paddr + p->p_memsz);
-
- p->p_memsz += adjust;
- if (p->p_type == PT_LOAD
- || (p->p_type == PT_NOTE
- && bfd_get_format (abfd) == bfd_core))
- {
- off += adjust;
- voff += adjust;
- }
- if ((flags & SEC_LOAD) != 0
- || (flags & SEC_THREAD_LOCAL) != 0)
- p->p_filesz += adjust;
- }
-
- if (p->p_type == PT_LOAD)
+ if (p->p_type == PT_LOAD
+ || p->p_type == PT_TLS)
{
bfd_signed_vma adjust;
if ((flags & SEC_LOAD) != 0)
{
- adjust = sec->lma - (p->p_paddr + p->p_memsz);
+ adjust = sec->lma - (p->p_paddr + p->p_filesz);
if (adjust < 0)
- adjust = 0;
+ {
+ (*_bfd_error_handler)
+ (_("%B: section %A lma 0x%lx overlaps previous sections"),
+ abfd, sec, (unsigned long) sec->lma);
+ adjust = 0;
+ }
+ off += adjust;
+ p->p_filesz += adjust;
+ p->p_memsz += adjust;
}
- else if ((flags & SEC_ALLOC) != 0)
+ /* .tbss is special. It doesn't contribute to p_memsz of
+ normal segments. */
+ else if ((flags & SEC_THREAD_LOCAL) == 0
+ || p->p_type == PT_TLS)
{
/* The section VMA must equal the file position
- modulo the page size. FIXME: I'm not sure if
- this adjustment is really necessary. We used to
- not have the SEC_LOAD case just above, and then
- this was necessary, but now I'm not sure. */
+ modulo the page size. */
+ bfd_size_type page = align;
if ((abfd->flags & D_PAGED) != 0)
- adjust = vma_page_aligned_bias (sec->vma, voff,
- bed->maxpagesize);
- else
- adjust = vma_page_aligned_bias (sec->vma, voff,
- align);
- }
- else
- adjust = 0;
-
- if (adjust != 0)
- {
- if (i == 0)
- {
- (* _bfd_error_handler) (_("\
-Error: First section in segment (%s) starts at 0x%x whereas the segment starts at 0x%x"),
- bfd_section_name (abfd, sec),
- sec->lma,
- p->p_paddr);
- return FALSE;
- }
+ page = bed->maxpagesize;
+ adjust = vma_page_aligned_bias (sec->vma,
+ p->p_vaddr + p->p_memsz,
+ page);
p->p_memsz += adjust;
- off += adjust;
- voff += adjust;
- if ((flags & SEC_LOAD) != 0)
- p->p_filesz += adjust;
}
-
- sec->filepos = off;
-
- /* We check SEC_HAS_CONTENTS here because if NOLOAD is
- used in a linker script we may have a section with
- SEC_LOAD clear but which is supposed to have
- contents. */
- if ((flags & SEC_LOAD) != 0
- || (flags & SEC_HAS_CONTENTS) != 0)
- off += sec->size;
-
- if ((flags & SEC_ALLOC) != 0
- && ((flags & SEC_LOAD) != 0
- || (flags & SEC_THREAD_LOCAL) == 0))
- voff += sec->size;
}
if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)
{
- /* The actual "note" segment has i == 0.
- This is the one that actually contains everything. */
+ /* The section at i == 0 is the one that actually contains
+ everything. */
if (i == 0)
{
sec->filepos = off;
- p->p_filesz = sec->size;
off += sec->size;
- voff = off;
+ p->p_filesz = sec->size;
+ p->p_memsz = 0;
+ p->p_align = 1;
}
else
{
- /* Fake sections -- don't need to be written. */
+ /* The rest are fake sections that shouldn't be written. */
sec->filepos = 0;
sec->size = 0;
- flags = sec->flags = 0;
+ sec->flags = 0;
+ continue;
}
- p->p_memsz = 0;
- p->p_align = 1;
}
else
{
- if ((sec->flags & SEC_LOAD) != 0
- || (sec->flags & SEC_THREAD_LOCAL) == 0
- || p->p_type == PT_TLS)
- p->p_memsz += sec->size;
+ if (p->p_type == PT_LOAD)
+ {
+ sec->filepos = off;
+ /* FIXME: The SEC_HAS_CONTENTS test here dates back to
+ 1997, and the exact reason for it isn't clear. One
+ plausible explanation is that it is to work around
+ a problem we have with linker scripts using data
+ statements in NOLOAD sections. I don't think it
+ makes a great deal of sense to have such a section
+ assigned to a PT_LOAD segment, but apparently
+ people do this. The data statement results in a
+ bfd_data_link_order being built, and these need
+ section contents to write into. Eventually, we get
+ to _bfd_elf_write_object_contents which writes any
+ section with contents to the output. Make room
+ here for the write, so that following segments are
+ not trashed. */
+ if ((flags & SEC_LOAD) != 0
+ || (flags & SEC_HAS_CONTENTS) != 0)
+ off += sec->size;
+ }
if ((flags & SEC_LOAD) != 0)
- p->p_filesz += sec->size;
+ {
+ p->p_filesz += sec->size;
+ p->p_memsz += sec->size;
+ }
+ /* .tbss is special. It doesn't contribute to p_memsz of
+ normal segments. */
+ else if ((flags & SEC_THREAD_LOCAL) == 0
+ || p->p_type == PT_TLS)
+ p->p_memsz += sec->size;
if (p->p_type == PT_TLS
&& sec->size == 0
if (p->p_type != PT_LOAD && m->count > 0)
{
BFD_ASSERT (! m->includes_filehdr && ! m->includes_phdrs);
+ /* If the section has not yet been assigned a file position,
+ do so now. The ARM BPABI requires that .dynamic section
+ not be marked SEC_ALLOC because it is not part of any
+ PT_LOAD segment, so it will not be processed above. */
+ if (p->p_type == PT_DYNAMIC && m->sections[0]->filepos == 0)
+ {
+ unsigned int i;
+ Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd);
+
+ i = 1;
+ while (i_shdrpp[i]->bfd_section != m->sections[0])
+ ++i;
+ off = (_bfd_elf_assign_file_position_for_section
+ (i_shdrpp[i], off, TRUE));
+ p->p_filesz = m->sections[0]->size;
+ }
p->p_offset = m->sections[0]->filepos;
}
if (m->count == 0)
_bfd_elf_compute_section_file_positions. All the section sizes and
VMAs must be known before this is called.
- We do not consider reloc sections at this point, unless they form
- part of the loadable image. Reloc sections are assigned file
- positions in assign_file_positions_for_relocs, which is called by
- write_object_contents and final_link.
+ Reloc sections come in two flavours: Those processed specially as
+ "side-channel" data attached to a section to which they apply, and
+ those that bfd doesn't process as relocations. The latter sort are
+ stored in a normal bfd section by bfd_section_from_shdr. We don't
+ consider the former sort here, unless they form part of the loadable
+ image. Reloc sections not assigned here will be handled later by
+ assign_file_positions_for_relocs.
We also don't set the positions of the .symtab and .strtab here. */
Elf_Internal_Shdr *hdr;
hdr = *hdrpp;
- if (hdr->sh_type == SHT_REL
- || hdr->sh_type == SHT_RELA
+ if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA)
+ && hdr->bfd_section == NULL)
|| i == tdata->symtab_section
|| i == tdata->symtab_shndx_section
|| i == tdata->strtab_section)
else if ((hdr->sh_flags & SHF_ALLOC) != 0)
{
((*_bfd_error_handler)
- (_("%s: warning: allocated section `%s' not in segment"),
- bfd_get_filename (abfd),
+ (_("%B: warning: allocated section `%s' not in segment"),
+ abfd,
(hdr->bfd_section == NULL
? "*unknown*"
: hdr->bfd_section->name)));
off = _bfd_elf_assign_file_position_for_section (hdr, off,
FALSE);
}
- else if (hdr->sh_type == SHT_REL
- || hdr->sh_type == SHT_RELA
+ else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA)
+ && hdr->bfd_section == NULL)
|| hdr == i_shdrpp[tdata->symtab_section]
|| hdr == i_shdrpp[tdata->symtab_shndx_section]
|| hdr == i_shdrpp[tdata->strtab_section])
q = (elf_symbol_type *) *p;
- if (bfd_get_section (&q->symbol) != section)
- continue;
-
switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
{
default:
break;
case STT_NOTYPE:
case STT_FUNC:
- if (q->symbol.section == section
+ if (bfd_get_section (&q->symbol) == section
&& q->symbol.value >= low_func
&& q->symbol.value <= offset)
{
bfd_vma
_bfd_elf_section_offset (bfd *abfd,
- struct bfd_link_info *info ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info,
asection *sec,
bfd_vma offset)
{
return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info,
offset);
case ELF_INFO_TYPE_EH_FRAME:
- return _bfd_elf_eh_frame_section_offset (abfd, sec, offset);
+ return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset);
default:
return offset;
}
}
\f
long
-_bfd_elf_get_synthetic_symtab (bfd *abfd, asymbol **relsyms, asymbol **ret)
+_bfd_elf_get_synthetic_symtab (bfd *abfd,
+ long symcount ATTRIBUTE_UNUSED,
+ asymbol **syms ATTRIBUTE_UNUSED,
+ long dynsymcount ATTRIBUTE_UNUSED,
+ asymbol **dynsyms,
+ asymbol **ret)
{
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
asection *relplt;
return 0;
slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
- if (! (*slurp_relocs) (abfd, relplt, relsyms, TRUE))
+ if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
return -1;
count = relplt->size / hdr->sh_entsize;
projects / deliverable / binutils-gdb.git / blobdiff