/* ELF executable support for BFD.
Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
- 2002, 2003, 2004 Free Software Foundation, Inc.
+ 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
/* SECTION
return h & 0xffffffff;
}
-/* Read a specified number of bytes at a specified offset in an ELF
- file, into a newly allocated buffer, and return a pointer to the
- buffer. */
-
-static char *
-elf_read (bfd *abfd, file_ptr offset, bfd_size_type size)
-{
- char *buf;
-
- if ((buf = bfd_alloc (abfd, size)) == NULL)
- return NULL;
- if (bfd_seek (abfd, offset, SEEK_SET) != 0)
- return NULL;
- if (bfd_bread (buf, size, abfd) != size)
- {
- if (bfd_get_error () != bfd_error_system_call)
- bfd_set_error (bfd_error_file_truncated);
- return NULL;
- }
- return buf;
-}
-
bfd_boolean
bfd_elf_mkobject (bfd *abfd)
{
bfd_elf_get_str_section (bfd *abfd, unsigned int shindex)
{
Elf_Internal_Shdr **i_shdrp;
- char *shstrtab = NULL;
+ bfd_byte *shstrtab = NULL;
file_ptr offset;
bfd_size_type shstrtabsize;
i_shdrp = elf_elfsections (abfd);
if (i_shdrp == 0 || i_shdrp[shindex] == 0)
- return 0;
+ return NULL;
- shstrtab = (char *) i_shdrp[shindex]->contents;
+ shstrtab = i_shdrp[shindex]->contents;
if (shstrtab == NULL)
{
/* No cached one, attempt to read, and cache what we read. */
offset = i_shdrp[shindex]->sh_offset;
shstrtabsize = i_shdrp[shindex]->sh_size;
- shstrtab = elf_read (abfd, offset, shstrtabsize);
+
+ /* Allocate and clear an extra byte at the end, to prevent crashes
+ in case the string table is not terminated. */
+ if (shstrtabsize + 1 == 0
+ || (shstrtab = bfd_alloc (abfd, shstrtabsize + 1)) == NULL
+ || bfd_seek (abfd, offset, SEEK_SET) != 0)
+ shstrtab = NULL;
+ else if (bfd_bread (shstrtab, shstrtabsize, abfd) != shstrtabsize)
+ {
+ if (bfd_get_error () != bfd_error_system_call)
+ bfd_set_error (bfd_error_file_truncated);
+ shstrtab = NULL;
+ }
+ else
+ shstrtab[shstrtabsize] = '\0';
i_shdrp[shindex]->contents = shstrtab;
}
- return shstrtab;
+ return (char *) shstrtab;
}
char *
if (strindex >= hdr->sh_size)
{
+ unsigned int shstrndx = elf_elfheader(abfd)->e_shstrndx;
(*_bfd_error_handler)
- (_("%s: invalid string offset %u >= %lu for section `%s'"),
- bfd_archive_filename (abfd), strindex, (unsigned long) hdr->sh_size,
- ((shindex == elf_elfheader(abfd)->e_shstrndx
- && strindex == hdr->sh_name)
+ (_("%B: invalid string offset %u >= %lu for section `%s'"),
+ abfd, strindex, (unsigned long) hdr->sh_size,
+ (shindex == shstrndx && strindex == hdr->sh_name
? ".shstrtab"
- : elf_string_from_elf_strtab (abfd, hdr->sh_name)));
+ : bfd_elf_string_from_elf_section (abfd, shstrndx, hdr->sh_name)));
return "";
}
pos = symtab_hdr->sh_offset + symoffset * extsym_size;
if (extsym_buf == NULL)
{
- alloc_ext = bfd_malloc (amt);
+ alloc_ext = bfd_malloc2 (symcount, extsym_size);
extsym_buf = alloc_ext;
}
if (extsym_buf == NULL
pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx);
if (extshndx_buf == NULL)
{
- alloc_extshndx = bfd_malloc (amt);
+ alloc_extshndx = bfd_malloc2 (symcount,
+ sizeof (Elf_External_Sym_Shndx));
extshndx_buf = alloc_extshndx;
}
if (extshndx_buf == NULL
if (intsym_buf == NULL)
{
- bfd_size_type amt = symcount * sizeof (Elf_Internal_Sym);
- intsym_buf = bfd_malloc (amt);
+ intsym_buf = bfd_malloc2 (symcount, sizeof (Elf_Internal_Sym));
if (intsym_buf == NULL)
goto out;
}
/* Look up a symbol name. */
const char *
-bfd_elf_local_sym_name (bfd *abfd, Elf_Internal_Sym *isym)
+bfd_elf_sym_name (bfd *abfd,
+ Elf_Internal_Shdr *symtab_hdr,
+ Elf_Internal_Sym *isym,
+ asection *sym_sec)
{
+ const char *name;
unsigned int iname = isym->st_name;
- unsigned int shindex = elf_tdata (abfd)->symtab_hdr.sh_link;
- if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION)
+ unsigned int shindex = symtab_hdr->sh_link;
+
+ if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION
+ /* Check for a bogus st_shndx to avoid crashing. */
+ && isym->st_shndx < elf_numsections (abfd)
+ && !(isym->st_shndx >= SHN_LORESERVE && isym->st_shndx <= SHN_HIRESERVE))
{
iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name;
shindex = elf_elfheader (abfd)->e_shstrndx;
}
- return bfd_elf_string_from_elf_section (abfd, shindex, iname);
+ name = bfd_elf_string_from_elf_section (abfd, shindex, iname);
+ if (name == NULL)
+ name = "(null)";
+ else if (sym_sec && *name == '\0')
+ name = bfd_section_name (abfd, sym_sec);
+
+ return name;
}
/* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP
Elf_External_Sym_Shndx eshndx;
Elf_Internal_Sym isym;
- /* First we need to ensure the symbol table is available. */
- if (! bfd_section_from_shdr (abfd, ghdr->sh_link))
+ /* First we need to ensure the symbol table is available. Make sure
+ that it is a symbol table section. */
+ hdr = elf_elfsections (abfd) [ghdr->sh_link];
+ if (hdr->sh_type != SHT_SYMTAB
+ || ! bfd_section_from_shdr (abfd, ghdr->sh_link))
return NULL;
/* Go read the symbol. */
&isym, esym, &eshndx) == NULL)
return NULL;
- return bfd_elf_local_sym_name (abfd, &isym);
+ return bfd_elf_sym_name (abfd, hdr, &isym, NULL);
}
/* Set next_in_group list pointer, and group name for NEWSECT. */
}
if (num_group == 0)
- num_group = (unsigned) -1;
- elf_tdata (abfd)->num_group = num_group;
-
- if (num_group > 0)
+ {
+ num_group = (unsigned) -1;
+ elf_tdata (abfd)->num_group = num_group;
+ }
+ else
{
/* We keep a list of elf section headers for group sections,
so we can find them quickly. */
- bfd_size_type amt = num_group * sizeof (Elf_Internal_Shdr *);
- elf_tdata (abfd)->group_sect_ptr = bfd_alloc (abfd, amt);
+ bfd_size_type amt;
+
+ elf_tdata (abfd)->num_group = num_group;
+ elf_tdata (abfd)->group_sect_ptr
+ = bfd_alloc2 (abfd, num_group, sizeof (Elf_Internal_Shdr *));
if (elf_tdata (abfd)->group_sect_ptr == NULL)
return FALSE;
/* Read the raw contents. */
BFD_ASSERT (sizeof (*dest) >= 4);
amt = shdr->sh_size * sizeof (*dest) / 4;
- shdr->contents = bfd_alloc (abfd, amt);
+ shdr->contents = bfd_alloc2 (abfd, shdr->sh_size,
+ sizeof (*dest) / 4);
if (shdr->contents == NULL
|| bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0
|| (bfd_bread (shdr->contents, shdr->sh_size, abfd)
if (idx >= shnum)
{
((*_bfd_error_handler)
- (_("%s: invalid SHT_GROUP entry"),
- bfd_archive_filename (abfd)));
+ (_("%B: invalid SHT_GROUP entry"), abfd));
idx = 0;
}
dest->shdr = elf_elfsections (abfd)[idx];
if (elf_group_name (newsect) == NULL)
{
- (*_bfd_error_handler) (_("%s: no group info for section %s"),
- bfd_archive_filename (abfd), newsect->name);
+ (*_bfd_error_handler) (_("%B: no group info for section %A"),
+ abfd, newsect);
}
return TRUE;
}
bfd_boolean
-bfd_elf_discard_group (bfd *abfd ATTRIBUTE_UNUSED, asection *group)
+_bfd_elf_setup_group_pointers (bfd *abfd)
{
- asection *first = elf_next_in_group (group);
- asection *s = first;
-
- while (s != NULL)
- {
- s->output_section = bfd_abs_section_ptr;
- s = elf_next_in_group (s);
- /* These lists are circular. */
- if (s == first)
- break;
+ unsigned int i;
+ unsigned int num_group = elf_tdata (abfd)->num_group;
+ bfd_boolean result = TRUE;
+
+ if (num_group == (unsigned) -1)
+ return result;
+
+ for (i = 0; i < num_group; i++)
+ {
+ Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i];
+ Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents;
+ unsigned int n_elt = shdr->sh_size / 4;
+
+ while (--n_elt != 0)
+ if ((++idx)->shdr->bfd_section)
+ elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section;
+ else if (idx->shdr->sh_type == SHT_RELA
+ || idx->shdr->sh_type == SHT_REL)
+ /* We won't include relocation sections in section groups in
+ output object files. We adjust the group section size here
+ so that relocatable link will work correctly when
+ relocation sections are in section group in input object
+ files. */
+ shdr->bfd_section->size -= 4;
+ else
+ {
+ /* There are some unknown sections in the group. */
+ (*_bfd_error_handler)
+ (_("%B: unknown [%d] section `%s' in group [%s]"),
+ abfd,
+ (unsigned int) idx->shdr->sh_type,
+ bfd_elf_string_from_elf_section (abfd,
+ (elf_elfheader (abfd)
+ ->e_shstrndx),
+ idx->shdr->sh_name),
+ shdr->bfd_section->name);
+ result = FALSE;
+ }
}
- return TRUE;
+ return result;
+}
+
+bfd_boolean
+bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec)
+{
+ return elf_next_in_group (sec) != NULL;
}
/* Make a BFD section from an ELF section. We store a pointer to the
bfd_boolean
_bfd_elf_make_section_from_shdr (bfd *abfd,
Elf_Internal_Shdr *hdr,
- const char *name)
+ const char *name,
+ int shindex)
{
asection *newsect;
flagword flags;
if (newsect == NULL)
return FALSE;
+ hdr->bfd_section = newsect;
+ elf_section_data (newsect)->this_hdr = *hdr;
+ elf_section_data (newsect)->this_idx = shindex;
+
/* Always use the real type/flags. */
elf_section_type (newsect) = hdr->sh_type;
elf_section_flags (newsect) = hdr->sh_flags;
if ((hdr->sh_flags & SHF_TLS) != 0)
flags |= SEC_THREAD_LOCAL;
- /* The debugging sections appear to be recognized only by name, not
- any sort of flag. */
- {
- static const char *debug_sec_names [] =
+ if ((flags & SEC_ALLOC) == 0)
{
- ".debug",
- ".gnu.linkonce.wi.",
- ".line",
- ".stab"
- };
- int i;
-
- for (i = ARRAY_SIZE (debug_sec_names); i--;)
- if (strncmp (name, debug_sec_names[i], strlen (debug_sec_names[i])) == 0)
- break;
-
- if (i >= 0)
- flags |= SEC_DEBUGGING;
- }
+ /* The debugging sections appear to be recognized only by name,
+ not any sort of flag. Their SEC_ALLOC bits are cleared. */
+ static const struct
+ {
+ const char *name;
+ int len;
+ } debug_sections [] =
+ {
+ { "debug", 5 }, /* 'd' */
+ { NULL, 0 }, /* 'e' */
+ { NULL, 0 }, /* 'f' */
+ { "gnu.linkonce.wi.", 17 }, /* 'g' */
+ { NULL, 0 }, /* 'h' */
+ { NULL, 0 }, /* 'i' */
+ { NULL, 0 }, /* 'j' */
+ { NULL, 0 }, /* 'k' */
+ { "line", 4 }, /* 'l' */
+ { NULL, 0 }, /* 'm' */
+ { NULL, 0 }, /* 'n' */
+ { NULL, 0 }, /* 'o' */
+ { NULL, 0 }, /* 'p' */
+ { NULL, 0 }, /* 'q' */
+ { NULL, 0 }, /* 'r' */
+ { "stab", 4 } /* 's' */
+ };
+
+ if (name [0] == '.')
+ {
+ int i = name [1] - 'd';
+ if (i >= 0
+ && i < (int) ARRAY_SIZE (debug_sections)
+ && debug_sections [i].name != NULL
+ && strncmp (&name [1], debug_sections [i].name,
+ debug_sections [i].len) == 0)
+ flags |= SEC_DEBUGGING;
+ }
+ }
/* As a GNU extension, if the name begins with .gnu.linkonce, we
only link a single copy of the section. This is used to support
}
}
- hdr->bfd_section = newsect;
- elf_section_data (newsect)->this_hdr = *hdr;
-
return TRUE;
}
bfd_boolean
_bfd_elf_merge_sections (bfd *abfd, struct bfd_link_info *info)
{
+ bfd *ibfd;
+ asection *sec;
+
if (!is_elf_hash_table (info->hash))
return FALSE;
- if (elf_hash_table (info)->merge_info)
- _bfd_merge_sections (abfd, elf_hash_table (info)->merge_info,
+
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+ if ((ibfd->flags & DYNAMIC) == 0)
+ for (sec = ibfd->sections; sec != NULL; sec = sec->next)
+ if ((sec->flags & SEC_MERGE) != 0
+ && !bfd_is_abs_section (sec->output_section))
+ {
+ struct bfd_elf_section_data *secdata;
+
+ secdata = elf_section_data (sec);
+ if (! _bfd_add_merge_section (abfd,
+ &elf_hash_table (info)->merge_info,
+ sec, &secdata->sec_info))
+ return FALSE;
+ else if (secdata->sec_info)
+ sec->sec_info_type = ELF_INFO_TYPE_MERGE;
+ }
+
+ if (elf_hash_table (info)->merge_info != NULL)
+ _bfd_merge_sections (abfd, info, elf_hash_table (info)->merge_info,
merge_sections_remove_hook);
return TRUE;
}
case PT_TLS: pt = "TLS"; break;
case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break;
case PT_GNU_STACK: pt = "STACK"; break;
+ case PT_GNU_RELRO: pt = "RELRO"; break;
default: sprintf (buf, "0x%lx", p->p_type); pt = buf; break;
}
fprintf (f, "%8s off 0x", pt);
fprintf (f, _("\nDynamic Section:\n"));
- dynbuf = bfd_malloc (s->_raw_size);
- if (dynbuf == NULL)
- goto error_return;
- if (! bfd_get_section_contents (abfd, s, dynbuf, 0, s->_raw_size))
+ if (!bfd_malloc_and_get_section (abfd, s, &dynbuf))
goto error_return;
elfsec = _bfd_elf_section_from_bfd_section (abfd, s);
swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
extdyn = dynbuf;
- extdynend = extdyn + s->_raw_size;
+ extdynend = extdyn + s->size;
for (; extdyn < extdynend; extdyn += extdynsize)
{
Elf_Internal_Dyn dyn;
if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL)
|| (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL))
{
- if (! _bfd_elf_slurp_version_tables (abfd))
+ if (! _bfd_elf_slurp_version_tables (abfd, FALSE))
return FALSE;
}
for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef)
{
fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx,
- t->vd_flags, t->vd_hash, t->vd_nodename);
- if (t->vd_auxptr->vda_nextptr != NULL)
+ t->vd_flags, t->vd_hash,
+ t->vd_nodename ? t->vd_nodename : "<corrupt>");
+ if (t->vd_auxptr != NULL && t->vd_auxptr->vda_nextptr != NULL)
{
Elf_Internal_Verdaux *a;
for (a = t->vd_auxptr->vda_nextptr;
a != NULL;
a = a->vda_nextptr)
- fprintf (f, "%s ", a->vda_nodename);
+ fprintf (f, "%s ",
+ a->vda_nodename ? a->vda_nodename : "<corrupt>");
fprintf (f, "\n");
}
}
{
Elf_Internal_Vernaux *a;
- fprintf (f, _(" required from %s:\n"), t->vn_filename);
+ fprintf (f, _(" required from %s:\n"),
+ t->vn_filename ? t->vn_filename : "<corrupt>");
for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash,
- a->vna_flags, a->vna_other, a->vna_nodename);
+ a->vna_flags, a->vna_other,
+ a->vna_nodename ? a->vna_nodename : "<corrupt>");
}
}
/* 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 = htab->init_got_refcount;
+ ret->plt = htab->init_plt_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;
struct elf_link_hash_entry *h,
bfd_boolean force_local)
{
- h->plt = elf_hash_table (info)->init_offset;
- h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
+ h->plt = elf_hash_table (info)->init_plt_offset;
+ 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;
const char *))
{
bfd_boolean ret;
+ int can_refcount = get_elf_backend_data (abfd)->can_refcount;
table->dynamic_sections_created = FALSE;
table->dynobj = NULL;
- /* Make sure can_refcount is extended to the width and signedness of
- init_refcount before we subtract one from it. */
- table->init_refcount.refcount = get_elf_backend_data (abfd)->can_refcount;
- table->init_refcount.refcount -= 1;
- table->init_offset.offset = -(bfd_vma) 1;
+ table->init_got_refcount.refcount = can_refcount - 1;
+ table->init_plt_refcount.refcount = can_refcount - 1;
+ table->init_got_offset.offset = -(bfd_vma) 1;
+ table->init_plt_offset.offset = -(bfd_vma) 1;
/* The first dynamic symbol is a dummy. */
table->dynsymcount = 1;
table->dynstr = NULL;
table->bucketcount = 0;
table->needed = NULL;
table->hgot = NULL;
- table->stab_info = NULL;
table->merge_info = NULL;
+ memset (&table->stab_info, 0, sizeof (table->stab_info));
memset (&table->eh_info, 0, sizeof (table->eh_info));
table->dynlocal = NULL;
table->runpath = NULL;
table->tls_sec = NULL;
table->tls_size = 0;
table->loaded = NULL;
+ table->is_relocatable_executable = FALSE;
ret = _bfd_link_hash_table_init (&table->root, abfd, newfunc);
table->root.type = bfd_link_elf_hash_table;
elf_dt_name (abfd) = name;
}
+int
+bfd_elf_get_dyn_lib_class (bfd *abfd)
+{
+ int lib_class;
+ if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
+ && bfd_get_format (abfd) == bfd_object)
+ lib_class = elf_dyn_lib_class (abfd);
+ else
+ lib_class = 0;
+ return lib_class;
+}
+
void
bfd_elf_set_dyn_lib_class (bfd *abfd, int lib_class)
{
return TRUE;
s = bfd_get_section_by_name (abfd, ".dynamic");
- if (s == NULL || s->_raw_size == 0)
+ if (s == NULL || s->size == 0)
return TRUE;
- dynbuf = bfd_malloc (s->_raw_size);
- if (dynbuf == NULL)
- goto error_return;
-
- if (! bfd_get_section_contents (abfd, s, dynbuf, 0, s->_raw_size))
+ if (!bfd_malloc_and_get_section (abfd, s, &dynbuf))
goto error_return;
elfsec = _bfd_elf_section_from_bfd_section (abfd, s);
swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
extdyn = dynbuf;
- extdynend = extdyn + s->_raw_size;
+ extdynend = extdyn + s->size;
for (; extdyn < extdynend; extdyn += extdynsize)
{
Elf_Internal_Dyn dyn;
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
const char *name;
- name = elf_string_from_elf_strtab (abfd, hdr->sh_name);
+ name = bfd_elf_string_from_elf_section (abfd,
+ elf_elfheader (abfd)->e_shstrndx,
+ hdr->sh_name);
+ if (name == NULL)
+ return FALSE;
switch (hdr->sh_type)
{
case SHT_INIT_ARRAY: /* .init_array section. */
case SHT_FINI_ARRAY: /* .fini_array section. */
case SHT_PREINIT_ARRAY: /* .preinit_array section. */
- return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
+ case SHT_GNU_LIBLIST: /* .gnu.liblist section. */
+ return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
case SHT_DYNAMIC: /* Dynamic linking information. */
- if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
+ if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
+ return FALSE;
+ if (hdr->sh_link > elf_numsections (abfd)
+ || elf_elfsections (abfd)[hdr->sh_link] == NULL)
return FALSE;
if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB)
{
if (elf_onesymtab (abfd) == shindex)
return TRUE;
- BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym);
+ if (hdr->sh_entsize != bed->s->sizeof_sym)
+ return FALSE;
BFD_ASSERT (elf_onesymtab (abfd) == 0);
elf_onesymtab (abfd) = shindex;
elf_tdata (abfd)->symtab_hdr = *hdr;
linker. */
if ((hdr->sh_flags & SHF_ALLOC) != 0
&& (abfd->flags & DYNAMIC) != 0
- && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
+ && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name,
+ shindex))
return FALSE;
+ /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we
+ can't read symbols without that section loaded as well. It
+ is most likely specified by the next section header. */
+ if (elf_elfsections (abfd)[elf_symtab_shndx (abfd)]->sh_link != shindex)
+ {
+ unsigned int i, num_sec;
+
+ num_sec = elf_numsections (abfd);
+ for (i = shindex + 1; i < num_sec; i++)
+ {
+ Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i];
+ if (hdr2->sh_type == SHT_SYMTAB_SHNDX
+ && hdr2->sh_link == shindex)
+ break;
+ }
+ if (i == num_sec)
+ for (i = 1; i < shindex; i++)
+ {
+ Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i];
+ if (hdr2->sh_type == SHT_SYMTAB_SHNDX
+ && hdr2->sh_link == shindex)
+ break;
+ }
+ if (i != shindex)
+ return bfd_section_from_shdr (abfd, i);
+ }
return TRUE;
case SHT_DYNSYM: /* A dynamic symbol table */
if (elf_dynsymtab (abfd) == shindex)
return TRUE;
- BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym);
+ if (hdr->sh_entsize != bed->s->sizeof_sym)
+ return FALSE;
BFD_ASSERT (elf_dynsymtab (abfd) == 0);
elf_dynsymtab (abfd) = shindex;
elf_tdata (abfd)->dynsymtab_hdr = *hdr;
/* Besides being a symbol table, we also treat this as a regular
section, so that objcopy can handle it. */
- return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
+ return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */
if (elf_symtab_shndx (abfd) == shindex)
return TRUE;
- /* Get the associated symbol table. */
- if (! bfd_section_from_shdr (abfd, hdr->sh_link)
- || hdr->sh_link != elf_onesymtab (abfd))
- return FALSE;
-
+ BFD_ASSERT (elf_symtab_shndx (abfd) == 0);
elf_symtab_shndx (abfd) = shindex;
elf_tdata (abfd)->symtab_shndx_hdr = *hdr;
elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr;
elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr;
return TRUE;
}
- {
- unsigned int i, num_sec;
+ if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex)
+ {
+ symtab_strtab:
+ elf_tdata (abfd)->strtab_hdr = *hdr;
+ elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr;
+ return TRUE;
+ }
+ if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex)
+ {
+ dynsymtab_strtab:
+ elf_tdata (abfd)->dynstrtab_hdr = *hdr;
+ hdr = &elf_tdata (abfd)->dynstrtab_hdr;
+ elf_elfsections (abfd)[shindex] = hdr;
+ /* We also treat this as a regular section, so that objcopy
+ can handle it. */
+ return _bfd_elf_make_section_from_shdr (abfd, hdr, name,
+ shindex);
+ }
- num_sec = elf_numsections (abfd);
- for (i = 1; i < num_sec; i++)
- {
- Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i];
- if (hdr2->sh_link == shindex)
- {
- if (! bfd_section_from_shdr (abfd, i))
- return FALSE;
- if (elf_onesymtab (abfd) == i)
- {
- elf_tdata (abfd)->strtab_hdr = *hdr;
- elf_elfsections (abfd)[shindex] =
- &elf_tdata (abfd)->strtab_hdr;
- return TRUE;
- }
- if (elf_dynsymtab (abfd) == i)
- {
- elf_tdata (abfd)->dynstrtab_hdr = *hdr;
- elf_elfsections (abfd)[shindex] = hdr =
- &elf_tdata (abfd)->dynstrtab_hdr;
- /* We also treat this as a regular section, so
- that objcopy can handle it. */
- break;
- }
-#if 0 /* Not handling other string tables specially right now. */
- hdr2 = elf_elfsections (abfd)[i]; /* in case it moved */
- /* We have a strtab for some random other section. */
- newsect = (asection *) hdr2->bfd_section;
- if (!newsect)
- break;
- hdr->bfd_section = newsect;
- hdr2 = &elf_section_data (newsect)->str_hdr;
- *hdr2 = *hdr;
- elf_elfsections (abfd)[shindex] = hdr2;
-#endif
- }
- }
- }
+ /* If the string table isn't one of the above, then treat it as a
+ regular section. We need to scan all the headers to be sure,
+ just in case this strtab section appeared before the above. */
+ if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0)
+ {
+ unsigned int i, num_sec;
- return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
+ num_sec = elf_numsections (abfd);
+ for (i = 1; i < num_sec; i++)
+ {
+ Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i];
+ if (hdr2->sh_link == shindex)
+ {
+ /* Prevent endless recursion on broken objects. */
+ if (i == shindex)
+ return FALSE;
+ if (! bfd_section_from_shdr (abfd, i))
+ return FALSE;
+ if (elf_onesymtab (abfd) == i)
+ goto symtab_strtab;
+ if (elf_dynsymtab (abfd) == i)
+ goto dynsymtab_strtab;
+ }
+ }
+ }
+ return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
case SHT_REL:
case SHT_RELA:
Elf_Internal_Shdr *hdr2;
unsigned int num_sec = elf_numsections (abfd);
+ if (hdr->sh_entsize
+ != (bfd_size_type) (hdr->sh_type == SHT_REL
+ ? bed->s->sizeof_rel : bed->s->sizeof_rela))
+ return FALSE;
+
/* Check for a bogus link to avoid crashing. */
if ((hdr->sh_link >= SHN_LORESERVE && hdr->sh_link <= SHN_HIRESERVE)
|| hdr->sh_link >= num_sec)
{
((*_bfd_error_handler)
- (_("%s: invalid link %lu for reloc section %s (index %u)"),
- bfd_archive_filename (abfd), hdr->sh_link, name, shindex));
- return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
+ (_("%B: invalid link %lu for reloc section %s (index %u)"),
+ abfd, hdr->sh_link, name, shindex));
+ return _bfd_elf_make_section_from_shdr (abfd, hdr, name,
+ shindex);
}
/* For some incomprehensible reason Oracle distributes
}
/* Get the symbol table. */
- if (elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB
+ if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB
+ || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM)
&& ! bfd_section_from_shdr (abfd, hdr->sh_link))
return FALSE;
can't use it as a reloc section if it points to the null
section. */
if (hdr->sh_link != elf_onesymtab (abfd) || hdr->sh_info == SHN_UNDEF)
- return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
+ return _bfd_elf_make_section_from_shdr (abfd, hdr, name,
+ shindex);
+ /* Prevent endless recursion on broken objects. */
+ if (elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_REL
+ || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_RELA)
+ return FALSE;
if (! bfd_section_from_shdr (abfd, hdr->sh_info))
return FALSE;
target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info);
case SHT_GNU_verdef:
elf_dynverdef (abfd) = shindex;
elf_tdata (abfd)->dynverdef_hdr = *hdr;
- return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
+ return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
break;
case SHT_GNU_versym:
+ if (hdr->sh_entsize != sizeof (Elf_External_Versym))
+ return FALSE;
elf_dynversym (abfd) = shindex;
elf_tdata (abfd)->dynversym_hdr = *hdr;
- return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
+ return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
break;
case SHT_GNU_verneed:
elf_dynverref (abfd) = shindex;
elf_tdata (abfd)->dynverref_hdr = *hdr;
- return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
+ return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
break;
case SHT_SHLIB:
/* We need a BFD section for objcopy and relocatable linking,
and it's handy to have the signature available as the section
name. */
+ if (hdr->sh_entsize != GRP_ENTRY_SIZE)
+ return FALSE;
name = group_signature (abfd, hdr);
if (name == NULL)
return FALSE;
- if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name))
+ if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
return FALSE;
if (hdr->contents != NULL)
{
hdr->bfd_section->flags
|= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
+ /* We try to keep the same section order as it comes in. */
+ idx += n_elt;
while (--n_elt != 0)
- if ((s = (++idx)->shdr->bfd_section) != NULL
+ if ((s = (--idx)->shdr->bfd_section) != NULL
&& elf_next_in_group (s) != NULL)
{
elf_next_in_group (hdr->bfd_section) = s;
default:
/* Check for any processor-specific section types. */
- {
- if (bed->elf_backend_section_from_shdr)
- (*bed->elf_backend_section_from_shdr) (abfd, hdr, name);
- }
- break;
+ return bed->elf_backend_section_from_shdr (abfd, hdr, name,
+ shindex);
}
return TRUE;
return elf_elfsections (abfd)[index]->bfd_section;
}
-static struct bfd_elf_special_section const special_sections[] =
+static const struct bfd_elf_special_section special_sections_b[] =
{
{ ".bss", 4, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
+ { NULL, 0, 0, 0, 0 }
+};
+
+static const struct bfd_elf_special_section special_sections_c[] =
+{
{ ".comment", 8, 0, SHT_PROGBITS, 0 },
+ { NULL, 0, 0, 0, 0 }
+};
+
+static const struct bfd_elf_special_section special_sections_d[] =
+{
{ ".data", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
{ ".data1", 6, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
{ ".debug", 6, 0, SHT_PROGBITS, 0 },
- { ".fini", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
- { ".init", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
- { ".line", 5, 0, SHT_PROGBITS, 0 },
- { ".rodata", 7, -2, SHT_PROGBITS, SHF_ALLOC },
- { ".rodata1", 8, 0, SHT_PROGBITS, SHF_ALLOC },
- { ".tbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS },
- { ".tdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS },
- { ".text", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
- { ".init_array", 11, 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE },
- { ".fini_array", 11, 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE },
- { ".preinit_array", 14, 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE },
{ ".debug_line", 11, 0, SHT_PROGBITS, 0 },
{ ".debug_info", 11, 0, SHT_PROGBITS, 0 },
{ ".debug_abbrev", 13, 0, SHT_PROGBITS, 0 },
{ ".dynamic", 8, 0, SHT_DYNAMIC, SHF_ALLOC },
{ ".dynstr", 7, 0, SHT_STRTAB, SHF_ALLOC },
{ ".dynsym", 7, 0, SHT_DYNSYM, SHF_ALLOC },
+ { NULL, 0, 0, 0, 0 }
+};
+
+static const struct bfd_elf_special_section special_sections_f[] =
+{
+ { ".fini", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
+ { ".fini_array", 11, 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE },
+ { NULL, 0, 0, 0, 0 }
+};
+
+static const struct bfd_elf_special_section special_sections_g[] =
+{
+ { ".gnu.linkonce.b",15, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
{ ".got", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
- { ".hash", 5, 0, SHT_HASH, SHF_ALLOC },
- { ".interp", 7, 0, SHT_PROGBITS, 0 },
- { ".plt", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
- { ".shstrtab", 9, 0, SHT_STRTAB, 0 },
- { ".strtab", 7, 0, SHT_STRTAB, 0 },
- { ".symtab", 7, 0, SHT_SYMTAB, 0 },
{ ".gnu.version", 12, 0, SHT_GNU_versym, 0 },
{ ".gnu.version_d", 14, 0, SHT_GNU_verdef, 0 },
{ ".gnu.version_r", 14, 0, SHT_GNU_verneed, 0 },
+ { ".gnu.liblist", 12, 0, SHT_GNU_LIBLIST, SHF_ALLOC },
+ { ".gnu.conflict", 13, 0, SHT_RELA, SHF_ALLOC },
+ { NULL, 0, 0, 0, 0 }
+};
+
+static const struct bfd_elf_special_section special_sections_h[] =
+{
+ { ".hash", 5, 0, SHT_HASH, SHF_ALLOC },
+ { NULL, 0, 0, 0, 0 }
+};
+
+static const struct bfd_elf_special_section special_sections_i[] =
+{
+ { ".init", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
+ { ".init_array", 11, 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE },
+ { ".interp", 7, 0, SHT_PROGBITS, 0 },
+ { NULL, 0, 0, 0, 0 }
+};
+
+static const struct bfd_elf_special_section special_sections_l[] =
+{
+ { ".line", 5, 0, SHT_PROGBITS, 0 },
+ { NULL, 0, 0, 0, 0 }
+};
+
+static const struct bfd_elf_special_section special_sections_n[] =
+{
+ { ".note.GNU-stack",15, 0, SHT_PROGBITS, 0 },
{ ".note", 5, -1, SHT_NOTE, 0 },
+ { NULL, 0, 0, 0, 0 }
+};
+
+static const struct bfd_elf_special_section special_sections_p[] =
+{
+ { ".preinit_array", 14, 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE },
+ { ".plt", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
+ { NULL, 0, 0, 0, 0 }
+};
+
+static const struct bfd_elf_special_section special_sections_r[] =
+{
+ { ".rodata", 7, -2, SHT_PROGBITS, SHF_ALLOC },
+ { ".rodata1", 8, 0, SHT_PROGBITS, SHF_ALLOC },
{ ".rela", 5, -1, SHT_RELA, 0 },
{ ".rel", 4, -1, SHT_REL, 0 },
+ { NULL, 0, 0, 0, 0 }
+};
+
+static const struct bfd_elf_special_section special_sections_s[] =
+{
+ { ".shstrtab", 9, 0, SHT_STRTAB, 0 },
+ { ".strtab", 7, 0, SHT_STRTAB, 0 },
+ { ".symtab", 7, 0, SHT_SYMTAB, 0 },
{ ".stabstr", 5, 3, SHT_STRTAB, 0 },
{ NULL, 0, 0, 0, 0 }
};
-static const struct bfd_elf_special_section *
-get_special_section (const char *name,
- const struct bfd_elf_special_section *special_sections,
- unsigned int rela)
+static const struct bfd_elf_special_section special_sections_t[] =
+{
+ { ".text", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
+ { ".tbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS },
+ { ".tdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS },
+ { NULL, 0, 0, 0, 0 }
+};
+
+static const struct bfd_elf_special_section *special_sections[] =
+{
+ special_sections_b, /* 'b' */
+ special_sections_c, /* 'b' */
+ special_sections_d, /* 'd' */
+ NULL, /* 'e' */
+ special_sections_f, /* 'f' */
+ special_sections_g, /* 'g' */
+ special_sections_h, /* 'h' */
+ special_sections_i, /* 'i' */
+ NULL, /* 'j' */
+ NULL, /* 'k' */
+ special_sections_l, /* 'l' */
+ NULL, /* 'm' */
+ special_sections_n, /* 'n' */
+ NULL, /* 'o' */
+ special_sections_p, /* 'p' */
+ NULL, /* 'q' */
+ special_sections_r, /* 'r' */
+ special_sections_s, /* 's' */
+ special_sections_t, /* 't' */
+};
+
+const struct bfd_elf_special_section *
+_bfd_elf_get_special_section (const char *name,
+ const struct bfd_elf_special_section *spec,
+ unsigned int rela)
{
int i;
- int len = strlen (name);
+ int len;
+
+ len = strlen (name);
- for (i = 0; special_sections[i].prefix != NULL; i++)
+ for (i = 0; spec[i].prefix != NULL; i++)
{
int suffix_len;
- int prefix_len = special_sections[i].prefix_length;
+ int prefix_len = spec[i].prefix_length;
if (len < prefix_len)
continue;
- if (memcmp (name, special_sections[i].prefix, prefix_len) != 0)
+ if (memcmp (name, spec[i].prefix, prefix_len) != 0)
continue;
- suffix_len = special_sections[i].suffix_length;
+ suffix_len = spec[i].suffix_length;
if (suffix_len <= 0)
{
if (name[prefix_len] != 0)
continue;
if (name[prefix_len] != '.'
&& (suffix_len == -2
- || (rela && special_sections[i].type == SHT_REL)))
+ || (rela && spec[i].type == SHT_REL)))
continue;
}
}
if (len < prefix_len + suffix_len)
continue;
if (memcmp (name + len - suffix_len,
- special_sections[i].prefix + prefix_len,
+ spec[i].prefix + prefix_len,
suffix_len) != 0)
continue;
}
- return &special_sections[i];
+ return &spec[i];
}
return NULL;
}
const struct bfd_elf_special_section *
-_bfd_elf_get_sec_type_attr (bfd *abfd, const char *name)
+_bfd_elf_get_sec_type_attr (bfd *abfd, asection *sec)
{
- const struct elf_backend_data *bed = get_elf_backend_data (abfd);
- const struct bfd_elf_special_section *ssect = NULL;
+ int i;
+ const struct bfd_elf_special_section *spec;
+ const struct elf_backend_data *bed;
/* See if this is one of the special sections. */
- if (name)
+ if (sec->name == NULL)
+ return NULL;
+
+ bed = get_elf_backend_data (abfd);
+ spec = bed->special_sections;
+ if (spec)
{
- unsigned int rela = bed->default_use_rela_p;
+ spec = _bfd_elf_get_special_section (sec->name,
+ bed->special_sections,
+ sec->use_rela_p);
+ if (spec != NULL)
+ return spec;
+ }
+
+ if (sec->name[0] != '.')
+ return NULL;
+
+ i = sec->name[1] - 'b';
+ if (i < 0 || i > 't' - 'b')
+ return NULL;
- if (bed->special_sections)
- ssect = get_special_section (name, bed->special_sections, rela);
+ spec = special_sections[i];
- if (! ssect)
- ssect = get_special_section (name, special_sections, rela);
- }
+ if (spec == NULL)
+ return NULL;
- return ssect;
+ return _bfd_elf_get_special_section (sec->name, spec, sec->use_rela_p);
}
bfd_boolean
_bfd_elf_new_section_hook (bfd *abfd, asection *sec)
{
struct bfd_elf_section_data *sdata;
+ const struct elf_backend_data *bed;
const struct bfd_elf_special_section *ssect;
sdata = (struct bfd_elf_section_data *) sec->used_by_bfd;
sec->used_by_bfd = sdata;
}
- elf_section_type (sec) = SHT_NULL;
- ssect = _bfd_elf_get_sec_type_attr (abfd, sec->name);
- if (ssect != NULL)
+ /* Indicate whether or not this section should use RELA relocations. */
+ bed = get_elf_backend_data (abfd);
+ sec->use_rela_p = bed->default_use_rela_p;
+
+ /* When we read a file, we don't need section type and flags unless
+ it is a linker created section. They will be overridden in
+ _bfd_elf_make_section_from_shdr anyway. */
+ if (abfd->direction != read_direction
+ || (sec->flags & SEC_LINKER_CREATED) != 0)
{
- elf_section_type (sec) = ssect->type;
- elf_section_flags (sec) = ssect->attr;
+ ssect = (*bed->get_sec_type_attr) (abfd, sec);
+ if (ssect != NULL)
+ {
+ elf_section_type (sec) = ssect->type;
+ elf_section_flags (sec) = ssect->attr;
+ }
}
- /* Indicate whether or not this section should use RELA relocations. */
- sec->use_rela_p = get_elf_backend_data (abfd)->default_use_rela_p;
-
return TRUE;
}
return FALSE;
newsect->vma = hdr->p_vaddr;
newsect->lma = hdr->p_paddr;
- newsect->_raw_size = hdr->p_filesz;
+ newsect->size = hdr->p_filesz;
newsect->filepos = hdr->p_offset;
newsect->flags |= SEC_HAS_CONTENTS;
newsect->alignment_power = bfd_log2 (hdr->p_align);
return FALSE;
newsect->vma = hdr->p_vaddr + hdr->p_filesz;
newsect->lma = hdr->p_paddr + hdr->p_filesz;
- newsect->_raw_size = hdr->p_memsz - hdr->p_filesz;
+ newsect->size = hdr->p_memsz - hdr->p_filesz;
if (hdr->p_type == PT_LOAD)
{
newsect->flags |= SEC_ALLOC;
case PT_GNU_STACK:
return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "stack");
+ case PT_GNU_RELRO:
+ return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "relro");
+
default:
- /* Check for any processor-specific program segment types.
- If no handler for them, default to making "segment" sections. */
+ /* Check for any processor-specific program segment types. */
bed = get_elf_backend_data (abfd);
- if (bed->elf_backend_section_from_phdr)
- return (*bed->elf_backend_section_from_phdr) (abfd, hdr, index);
- else
- return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "segment");
+ return bed->elf_backend_section_from_phdr (abfd, hdr, index, "proc");
}
}
this_hdr->sh_addr = 0;
this_hdr->sh_offset = 0;
- this_hdr->sh_size = asect->_raw_size;
+ this_hdr->sh_size = asect->size;
this_hdr->sh_link = 0;
this_hdr->sh_addralign = 1 << asect->alignment_power;
/* The sh_entsize and sh_info fields may have been set already by
asect->flags. */
if (this_hdr->sh_type == SHT_NULL)
{
- if ((asect->flags & SEC_ALLOC) != 0
+ if ((asect->flags & SEC_GROUP) != 0)
+ {
+ /* We also need to mark SHF_GROUP here for relocatable
+ link. */
+ struct bfd_link_order *l;
+ asection *elt;
+
+ for (l = asect->map_head.link_order; l != NULL; l = l->next)
+ if (l->type == bfd_indirect_link_order
+ && (elt = elf_next_in_group (l->u.indirect.section)) != NULL)
+ do
+ {
+ /* The name is not important. Anything will do. */
+ elf_group_name (elt->output_section) = "G";
+ elf_section_flags (elt->output_section) |= SHF_GROUP;
+
+ elt = elf_next_in_group (elt);
+ /* During a relocatable link, the lists are
+ circular. */
+ }
+ while (elt != elf_next_in_group (l->u.indirect.section));
+
+ this_hdr->sh_type = SHT_GROUP;
+ }
+ else if ((asect->flags & SEC_ALLOC) != 0
&& (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
|| (asect->flags & SEC_NEVER_LOAD) != 0))
this_hdr->sh_type = SHT_NOBITS;
if ((asect->flags & SEC_THREAD_LOCAL) != 0)
{
this_hdr->sh_flags |= SHF_TLS;
- if (asect->_raw_size == 0 && (asect->flags & SEC_HAS_CONTENTS) == 0)
+ if (asect->size == 0 && (asect->flags & SEC_HAS_CONTENTS) == 0)
{
struct bfd_link_order *o;
this_hdr->sh_size = 0;
- for (o = asect->link_order_head; o != NULL; o = o->next)
+ for (o = asect->map_head.link_order; o != NULL; o = o->next)
if (this_hdr->sh_size < o->offset + o->size)
this_hdr->sh_size = o->offset + o->size;
if (this_hdr->sh_size)
struct bfd_link_order *l;
bfd_boolean gas;
- if (elf_section_data (sec)->this_hdr.sh_type != SHT_GROUP
+ /* Ignore linker created group section. See elfNN_ia64_object_p in
+ elfxx-ia64.c. */
+ if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP)
|| *failedptr)
return;
if (sec->contents == NULL)
{
gas = FALSE;
- sec->contents = bfd_alloc (abfd, sec->_raw_size);
+ sec->contents = bfd_alloc (abfd, sec->size);
/* Arrange for the section to be written out. */
elf_section_data (sec)->this_hdr.contents = sec->contents;
}
}
- loc = sec->contents + sec->_raw_size;
+ loc = sec->contents + sec->size;
/* Get the pointer to the first section in the group that gas
squirreled away here. objcopy arranges for this to be set to the
/* If this is a relocatable link, then the above did nothing because
SEC is the output section. Look through the input sections
instead. */
- for (l = sec->link_order_head; l != NULL; l = l->next)
+ for (l = sec->map_head.link_order; l != NULL; l = l->next)
if (l->type == bfd_indirect_link_order
&& (elt = elf_next_in_group (l->u.indirect.section)) != NULL)
do
}
while (elt != elf_next_in_group (l->u.indirect.section));
- /* With ld -r, merging SHT_GROUP sections results in wasted space
- due to allowing for the flag word on each input. We may well
- duplicate entries too. */
- while ((loc -= 4) > sec->contents)
- H_PUT_32 (abfd, 0, loc);
-
- if (loc != sec->contents)
+ if ((loc -= 4) != sec->contents)
abort ();
H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc);
in here too, while we're at it. */
static bfd_boolean
-assign_section_numbers (bfd *abfd)
+assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info)
{
struct elf_obj_tdata *t = elf_tdata (abfd);
asection *sec;
unsigned int section_number, secn;
Elf_Internal_Shdr **i_shdrp;
- bfd_size_type amt;
+ struct bfd_elf_section_data *d;
section_number = 1;
_bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd));
- for (sec = abfd->sections; sec; sec = sec->next)
+ /* SHT_GROUP sections are in relocatable files only. */
+ if (link_info == NULL || link_info->relocatable)
{
- struct bfd_elf_section_data *d = elf_section_data (sec);
-
- if (section_number == SHN_LORESERVE)
- section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
- d->this_idx = section_number++;
- _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name);
- if ((sec->flags & SEC_RELOC) == 0)
- d->rel_idx = 0;
- else
+ /* Put SHT_GROUP sections first. */
+ for (sec = abfd->sections; sec != NULL; sec = sec->next)
+ {
+ d = elf_section_data (sec);
+
+ if (d->this_hdr.sh_type == SHT_GROUP)
+ {
+ if (sec->flags & SEC_LINKER_CREATED)
+ {
+ /* Remove the linker created SHT_GROUP sections. */
+ bfd_section_list_remove (abfd, sec);
+ abfd->section_count--;
+ }
+ else
+ {
+ if (section_number == SHN_LORESERVE)
+ section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
+ d->this_idx = section_number++;
+ }
+ }
+ }
+ }
+
+ for (sec = abfd->sections; sec; sec = sec->next)
+ {
+ d = elf_section_data (sec);
+
+ if (d->this_hdr.sh_type != SHT_GROUP)
+ {
+ if (section_number == SHN_LORESERVE)
+ section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
+ d->this_idx = section_number++;
+ }
+ _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name);
+ if ((sec->flags & SEC_RELOC) == 0)
+ d->rel_idx = 0;
+ else
{
if (section_number == SHN_LORESERVE)
section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
/* Set up the list of section header pointers, in agreement with the
indices. */
- amt = section_number * sizeof (Elf_Internal_Shdr *);
- i_shdrp = bfd_zalloc (abfd, amt);
+ i_shdrp = bfd_zalloc2 (abfd, section_number, sizeof (Elf_Internal_Shdr *));
if (i_shdrp == NULL)
return FALSE;
- amt = sizeof (Elf_Internal_Shdr);
- i_shdrp[0] = bfd_zalloc (abfd, amt);
+ i_shdrp[0] = bfd_zalloc (abfd, sizeof (Elf_Internal_Shdr));
if (i_shdrp[0] == NULL)
{
bfd_release (abfd, i_shdrp);
i_shdrp[t->strtab_section] = &t->strtab_hdr;
t->symtab_hdr.sh_link = t->strtab_section;
}
+
for (sec = abfd->sections; sec; sec = sec->next)
{
struct bfd_elf_section_data *d = elf_section_data (sec);
d->rel_hdr2->sh_info = d->this_idx;
}
+ /* We need to set up sh_link for SHF_LINK_ORDER. */
+ if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0)
+ {
+ s = elf_linked_to_section (sec);
+ if (s)
+ d->this_hdr.sh_link = elf_section_data (s)->this_idx;
+ else
+ {
+ struct bfd_link_order *p;
+
+ /* Find out what the corresponding section in output
+ is. */
+ for (p = sec->map_head.link_order; p != NULL; p = p->next)
+ {
+ s = p->u.indirect.section;
+ if (p->type == bfd_indirect_link_order
+ && (bfd_get_flavour (s->owner)
+ == bfd_target_elf_flavour))
+ {
+ Elf_Internal_Shdr ** const elf_shdrp
+ = elf_elfsections (s->owner);
+ int elfsec
+ = _bfd_elf_section_from_bfd_section (s->owner, s);
+ elfsec = elf_shdrp[elfsec]->sh_link;
+ /* PR 290:
+ The Intel C compiler generates SHT_IA_64_UNWIND with
+ SHF_LINK_ORDER. But it doesn't set the sh_link or
+ sh_info fields. Hence we could get the situation
+ where elfsec is 0. */
+ if (elfsec == 0)
+ {
+ const struct elf_backend_data *bed
+ = get_elf_backend_data (abfd);
+ if (bed->link_order_error_handler)
+ bed->link_order_error_handler
+ (_("%B: warning: sh_link not set for section `%A'"),
+ abfd, s);
+ }
+ else
+ {
+ s = elf_shdrp[elfsec]->bfd_section;
+ if (elf_discarded_section (s))
+ {
+ asection *kept;
+ (*_bfd_error_handler)
+ (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"),
+ abfd, d->this_hdr.bfd_section,
+ s, s->owner);
+ /* Point to the kept section if it has
+ the same size as the discarded
+ one. */
+ kept = _bfd_elf_check_kept_section (s);
+ if (kept == NULL)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+ s = kept;
+ }
+ s = s->output_section;
+ BFD_ASSERT (s != NULL);
+ d->this_hdr.sh_link = elf_section_data (s)->this_idx;
+ }
+ break;
+ }
+ }
+ }
+ }
+
switch (d->this_hdr.sh_type)
{
case SHT_REL:
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
unsigned int idx;
asection *asect;
asymbol **new_syms;
- bfd_size_type amt;
#ifdef DEBUG
fprintf (stderr, "elf_map_symbols\n");
}
max_index++;
- amt = max_index * sizeof (asymbol *);
- sect_syms = bfd_zalloc (abfd, amt);
+ sect_syms = bfd_zalloc2 (abfd, max_index, sizeof (asymbol *));
if (sect_syms == NULL)
return FALSE;
elf_section_syms (abfd) = sect_syms;
}
/* Now sort the symbols so the local symbols are first. */
- amt = (num_locals + num_globals) * sizeof (asymbol *);
- new_syms = bfd_alloc (abfd, amt);
+ new_syms = bfd_alloc2 (abfd, num_locals + num_globals, sizeof (asymbol *));
if (new_syms == NULL)
return FALSE;
{
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
bfd_boolean failed;
- struct bfd_strtab_hash *strtab;
+ struct bfd_strtab_hash *strtab = NULL;
Elf_Internal_Shdr *shstrtab_hdr;
if (abfd->output_has_begun)
if (failed)
return FALSE;
- if (!assign_section_numbers (abfd))
+ if (!assign_section_numbers (abfd, link_info))
return FALSE;
/* The backend linker builds symbol table information itself. */
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
/* Select the allocated sections, and sort them. */
- amt = bfd_count_sections (abfd) * sizeof (asection *);
- sections = bfd_malloc (amt);
+ sections = bfd_malloc2 (bfd_count_sections (abfd), sizeof (asection *));
if (sections == NULL)
goto error_return;
last_hdr = hdr;
/* .tbss sections effectively have zero size. */
if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL)
- last_size = hdr->_raw_size;
+ last_size = hdr->size;
else
last_size = 0;
continue;
last_hdr = hdr;
/* .tbss sections effectively have zero size. */
if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL)
- last_size = hdr->_raw_size;
+ last_size = hdr->size;
else
last_size = 0;
phdr_index = i;
/* 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;
}
pm = &m->next;
}
+ if (elf_tdata (abfd)->relro)
+ {
+ amt = sizeof (struct elf_segment_map);
+ m = bfd_zalloc (abfd, amt);
+ if (m == NULL)
+ goto error_return;
+ m->next = NULL;
+ m->p_type = PT_GNU_RELRO;
+ m->p_flags = PF_R;
+ m->p_flags_valid = 1;
+
+ *pm = m;
+ pm = &m->next;
+ }
+
free (sections);
sections = NULL;
/* Sort by size, to put zero sized sections
before others at the same address. */
- size1 = (sec1->flags & SEC_LOAD) ? sec1->_raw_size : 0;
- size2 = (sec2->flags & SEC_LOAD) ? sec2->_raw_size : 0;
+ size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0;
+ size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0;
if (size1 < size2)
return -1;
bfd_vma filehdr_vaddr, filehdr_paddr;
bfd_vma phdrs_vaddr, phdrs_paddr;
Elf_Internal_Phdr *p;
- bfd_size_type amt;
if (elf_tdata (abfd)->segment_map == NULL)
{
{
/* The placement algorithm assumes that non allocated sections are
not in PT_LOAD segments. We ensure this here by removing such
- sections from the segment map. */
+ sections from the segment map. We also remove excluded
+ sections. */
for (m = elf_tdata (abfd)->segment_map;
m != NULL;
m = m->next)
unsigned int new_count;
unsigned int i;
- if (m->p_type != PT_LOAD)
- continue;
-
new_count = 0;
for (i = 0; i < m->count; i ++)
{
- if ((m->sections[i]->flags & SEC_ALLOC) != 0)
+ if ((m->sections[i]->flags & SEC_EXCLUDE) == 0
+ && ((m->sections[i]->flags & SEC_ALLOC) != 0
+ || m->p_type != PT_LOAD))
{
if (i != new_count)
m->sections[new_count] = m->sections[i];
elf_elfheader (abfd)->e_phnum = count;
if (count == 0)
- return TRUE;
+ {
+ elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr;
+ return TRUE;
+ }
/* If we already counted the number of program segments, make sure
that we allocated enough space. This happens when SIZEOF_HEADERS
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;
}
if (alloc == 0)
alloc = count;
- amt = alloc * sizeof (Elf_Internal_Phdr);
- phdrs = bfd_alloc (abfd, amt);
+ phdrs = bfd_alloc2 (abfd, alloc, sizeof (Elf_Internal_Phdr));
if (phdrs == NULL)
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)
{
- if ((abfd->flags & D_PAGED) != 0)
- off += vma_page_aligned_bias (m->sections[0]->vma, off,
- bed->maxpagesize);
- else
+ bfd_size_type align;
+ bfd_vma adjust;
+ unsigned int align_power = 0;
+
+ for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
{
- bfd_size_type align;
+ unsigned int secalign;
- align = 0;
- for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
- {
- bfd_size_type secalign;
+ secalign = bfd_get_section_alignment (abfd, *secpp);
+ if (secalign > align_power)
+ align_power = secalign;
+ }
+ align = (bfd_size_type) 1 << align_power;
- secalign = bfd_get_section_alignment (abfd, *secpp);
- if (secalign > align)
- align = secalign;
- }
+ if ((abfd->flags & D_PAGED) != 0 && bed->maxpagesize > align)
+ align = bed->maxpagesize;
- 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
+ PT_DYNAMIC segment. */
+ else if (p->p_type == PT_DYNAMIC
+ && m->count > 1
+ && strcmp (m->sections[0]->name, ".dynamic") != 0)
+ {
+ _bfd_error_handler
+ (_("%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 (m->count == 0)
p->p_vaddr = 0;
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. */
- 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;
- }
+ modulo the page size. */
+ bfd_size_type page = align;
+ if ((abfd->flags & D_PAGED) != 0 && bed->maxpagesize > page)
+ 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->_raw_size;
-
- if ((flags & SEC_ALLOC) != 0
- && ((flags & SEC_LOAD) != 0
- || (flags & SEC_THREAD_LOCAL) == 0))
- voff += sec->_raw_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->_raw_size;
- off += sec->_raw_size;
- voff = off;
+ off += sec->size;
+ 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->_raw_size = 0;
- flags = sec->flags = 0;
+ sec->size = 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->_raw_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->_raw_size;
+ {
+ p->p_filesz += sec->size;
+ p->p_memsz += sec->size;
+ }
+ /* PR ld/594: Sections in note segments which are not loaded
+ contribute to the file size but not the in-memory size. */
+ else if (p->p_type == PT_NOTE
+ && (flags & SEC_HAS_CONTENTS) != 0)
+ p->p_filesz += 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->_raw_size == 0
+ && sec->size == 0
&& (sec->flags & SEC_HAS_CONTENTS) == 0)
{
struct bfd_link_order *o;
bfd_vma tbss_size = 0;
- for (o = sec->link_order_head; o != NULL; o = o->next)
+ for (o = sec->map_head.link_order; o != NULL; o = o->next)
if (tbss_size < o->offset + o->size)
tbss_size = o->offset + o->size;
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)
if (! m->p_paddr_valid)
p->p_paddr = phdrs_paddr;
}
+ else if (p->p_type == PT_GNU_RELRO)
+ {
+ Elf_Internal_Phdr *lp;
+
+ for (lp = phdrs; lp < phdrs + count; ++lp)
+ {
+ if (lp->p_type == PT_LOAD
+ && lp->p_vaddr <= link_info->relro_end
+ && lp->p_vaddr >= link_info->relro_start
+ && lp->p_vaddr + lp->p_filesz
+ >= link_info->relro_end)
+ break;
+ }
+
+ if (lp < phdrs + count
+ && link_info->relro_end > lp->p_vaddr)
+ {
+ p->p_vaddr = lp->p_vaddr;
+ p->p_paddr = lp->p_paddr;
+ p->p_offset = lp->p_offset;
+ p->p_filesz = link_info->relro_end - lp->p_vaddr;
+ p->p_memsz = p->p_filesz;
+ p->p_align = 1;
+ p->p_flags = (lp->p_flags & ~PF_W);
+ }
+ else
+ {
+ memset (p, 0, sizeof *p);
+ p->p_type = PT_NULL;
+ }
+ }
}
}
++segs;
}
+ if (elf_tdata (abfd)->relro)
+ {
+ /* We need a PT_GNU_RELRO segment. */
+ ++segs;
+ }
+
for (s = abfd->sections; s != NULL; s = s->next)
{
if ((s->flags & SEC_LOAD) != 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])
/* If we're building an executable, we'll need a program header table. */
if (abfd->flags & EXEC_P)
- {
- /* It all happens later. */
-#if 0
- i_ehdrp->e_phentsize = sizeof (Elf_External_Phdr);
-
- /* elf_build_phdrs() returns a (NULL-terminated) array of
- Elf_Internal_Phdrs. */
- i_phdrp = elf_build_phdrs (abfd, i_ehdrp, i_shdrp, &i_ehdrp->e_phnum);
- i_ehdrp->e_phoff = outbase;
- outbase += i_ehdrp->e_phentsize * i_ehdrp->e_phnum;
-#endif
- }
+ /* It all happens later. */
+ ;
else
{
i_ehdrp->e_phentsize = 0;
}
/* Write out the section header names. */
- if (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0
- || ! _bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))
+ if (elf_shstrtab (abfd) != NULL
+ && (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0
+ || ! _bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd))))
return FALSE;
if (bed->elf_backend_final_write_processing)
else if (bfd_is_und_section (asect))
index = SHN_UNDEF;
else
- {
- Elf_Internal_Shdr **i_shdrp = elf_elfsections (abfd);
- int maxindex = elf_numsections (abfd);
-
- for (index = 1; index < maxindex; index++)
- {
- Elf_Internal_Shdr *hdr = i_shdrp[index];
-
- if (hdr != NULL && hdr->bfd_section == asect)
- return index;
- }
- index = -1;
- }
+ index = -1;
bed = get_elf_backend_data (abfd);
if (bed->elf_backend_section_from_bfd_section)
/* This case can occur when using --strip-symbol on a symbol
which is used in a relocation entry. */
(*_bfd_error_handler)
- (_("%s: symbol `%s' required but not present"),
- bfd_archive_filename (abfd), bfd_asymbol_name (asym_ptr));
+ (_("%B: symbol `%s' required but not present"),
+ abfd, bfd_asymbol_name (asym_ptr));
bfd_set_error (bfd_error_no_symbols);
return -1;
}
#define SECTION_SIZE(section, segment) \
(((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \
!= SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \
- ? section->_raw_size : 0)
+ ? section->size : 0)
/* Returns TRUE if the given section is contained within
the given segment. VMA addresses are compared. */
&& bfd_get_format (ibfd) == bfd_core \
&& s->vma == 0 && s->lma == 0 \
&& (bfd_vma) s->filepos >= p->p_offset \
- && ((bfd_vma) s->filepos + s->_raw_size \
+ && ((bfd_vma) s->filepos + s->size \
<= p->p_offset + p->p_filesz))
/* The complicated case when p_vaddr is 0 is to handle the Solaris
&& p->p_memsz == 0 \
&& p->p_filesz > 0 \
&& (s->flags & SEC_HAS_CONTENTS) != 0 \
- && s->_raw_size > 0 \
+ && s->size > 0 \
&& (bfd_vma) s->filepos >= p->p_offset \
- && ((bfd_vma) s->filepos + s->_raw_size \
+ && ((bfd_vma) s->filepos + s->size \
<= p->p_offset + p->p_filesz))
/* Decide if the given section should be included in the given segment.
4. The section has not already been allocated to a previous segment.
5. PT_GNU_STACK segments do not include any sections.
6. PT_TLS segment includes only SHF_TLS sections.
- 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. */
+ 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments.
+ 8. PT_DYNAMIC should not contain empty sections at the beginning
+ (with the possible exception of .dynamic). */
#define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \
((((segment->p_paddr \
? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \
&& (segment->p_type == PT_LOAD \
|| segment->p_type == PT_TLS \
|| (section->flags & SEC_THREAD_LOCAL) == 0) \
+ && (segment->p_type != PT_DYNAMIC \
+ || SECTION_SIZE (section, segment) > 0 \
+ || (segment->p_paddr \
+ ? segment->p_paddr != section->lma \
+ : segment->p_vaddr != section->vma) \
+ || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \
+ == 0)) \
&& ! section->segment_mark)
/* Returns TRUE iff seg1 starts after the end of seg2. */
a warning is produced. */
if (segment->p_type == PT_LOAD)
(*_bfd_error_handler)
- (_("%s: warning: Empty loadable segment detected, is this intentional ?\n"),
- bfd_archive_filename (ibfd));
+ (_("%B: warning: Empty loadable segment detected, is this intentional ?\n"),
+ ibfd);
map->count = 0;
*pointer_to_map = map;
/* Gcc 2.96 miscompiles this code on mips. Don't do casting here
to work around this long long bug. */
- amt = section_count * sizeof (asection *);
- sections = bfd_malloc (amt);
+ sections = bfd_malloc2 (section_count, sizeof (asection *));
if (sections == NULL)
return FALSE;
/* If the gap between the end of the previous section
and the start of this section is more than
maxpagesize then we need to start a new segment. */
- if ((BFD_ALIGN (prev_sec->lma + prev_sec->_raw_size,
+ if ((BFD_ALIGN (prev_sec->lma + prev_sec->size,
maxpagesize)
< BFD_ALIGN (output_section->lma, maxpagesize))
- || ((prev_sec->lma + prev_sec->_raw_size)
+ || ((prev_sec->lma + prev_sec->size)
> output_section->lma))
{
if (suggested_lma == 0)
-= (count - phdr_adjust_num) * iehdr->e_phentsize;
}
-#if 0
- /* Final Step: Sort the segments into ascending order of physical
- address. */
- if (map_first != NULL)
- {
- struct elf_segment_map *prev;
-
- prev = map_first;
- for (map = map_first->next; map != NULL; prev = map, map = map->next)
- {
- /* Yes I know - its a bubble sort.... */
- if (map->next != NULL && (map->next->p_paddr < map->p_paddr))
- {
- /* Swap map and map->next. */
- prev->next = map->next;
- map->next = map->next->next;
- prev->next->next = map;
-
- /* Restart loop. */
- map = map_first;
- }
- }
- }
-#endif
-
#undef SEGMENT_END
#undef SECTION_SIZE
#undef IS_CONTAINED_BY_VMA
|| obfd->xvec->flavour != bfd_target_elf_flavour)
return TRUE;
- if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL)
- {
- asection *s;
-
- /* Only set up the segments if there are no more SEC_ALLOC
- sections. FIXME: This won't do the right thing if objcopy is
- used to remove the last SEC_ALLOC section, since objcopy
- won't call this routine in that case. */
- for (s = isec->next; s != NULL; s = s->next)
- if ((s->flags & SEC_ALLOC) != 0)
- break;
- if (s == NULL)
- {
- if (! copy_private_bfd_data (ibfd, obfd))
- return FALSE;
- }
- }
-
ihdr = &elf_section_data (isec)->this_hdr;
ohdr = &elf_section_data (osec)->this_hdr;
/* Set things up for objcopy. The output SHT_GROUP section will
have its elf_next_in_group pointing back to the input group
- members. */
- elf_next_in_group (osec) = elf_next_in_group (isec);
- elf_group_name (osec) = elf_group_name (isec);
+ members. Ignore linker created group section. See
+ elfNN_ia64_object_p in elfxx-ia64.c. */
+ if (elf_sec_group (isec) == NULL
+ || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0)
+ {
+ elf_next_in_group (osec) = elf_next_in_group (isec);
+ elf_group_name (osec) = elf_group_name (isec);
+ }
osec->use_rela_p = isec->use_rela_p;
return TRUE;
}
+/* Copy private header information. */
+
+bfd_boolean
+_bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd)
+{
+ if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
+ || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
+ return TRUE;
+
+ /* Copy over private BFD data if it has not already been copied.
+ This must be done here, rather than in the copy_private_bfd_data
+ entry point, because the latter is called after the section
+ contents have been set, which means that the program headers have
+ already been worked out. */
+ if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL)
+ {
+ if (! copy_private_bfd_data (ibfd, obfd))
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
/* Copy private symbol information. If this symbol is in a section
which we did not map into a BFD section, try to map the section
index correctly. We use special macro definitions for the mapped
Elf_Internal_Shdr *symtab_hdr;
Elf_Internal_Shdr *symtab_shndx_hdr;
Elf_Internal_Shdr *symstrtab_hdr;
- char *outbound_syms;
- char *outbound_shndx;
+ bfd_byte *outbound_syms;
+ bfd_byte *outbound_shndx;
int idx;
bfd_size_type amt;
bfd_boolean name_local_sections;
symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr;
symstrtab_hdr->sh_type = SHT_STRTAB;
- amt = (bfd_size_type) (1 + symcount) * bed->s->sizeof_sym;
- outbound_syms = bfd_alloc (abfd, amt);
+ outbound_syms = bfd_alloc2 (abfd, 1 + symcount, bed->s->sizeof_sym);
if (outbound_syms == NULL)
{
_bfd_stringtab_free (stt);
if (symtab_shndx_hdr->sh_name != 0)
{
amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx);
- outbound_shndx = bfd_zalloc (abfd, amt);
+ outbound_shndx = bfd_zalloc2 (abfd, 1 + symcount,
+ sizeof (Elf_External_Sym_Shndx));
if (outbound_shndx == NULL)
{
_bfd_stringtab_free (stt);
return symcount;
}
-/* Return the size required for the dynamic reloc entries. Any
- section that was actually installed in the BFD, and has type
- SHT_REL or SHT_RELA, and uses the dynamic symbol table, is
- considered to be a dynamic reloc section. */
+/* Return the size required for the dynamic reloc entries. Any loadable
+ section that was actually installed in the BFD, and has type SHT_REL
+ or SHT_RELA, and uses the dynamic symbol table, is considered to be a
+ dynamic reloc section. */
long
_bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd)
ret = sizeof (arelent *);
for (s = abfd->sections; s != NULL; s = s->next)
- if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
+ if ((s->flags & SEC_LOAD) != 0
+ && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
&& (elf_section_data (s)->this_hdr.sh_type == SHT_REL
|| elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
- ret += ((s->_raw_size / elf_section_data (s)->this_hdr.sh_entsize)
+ ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize)
* sizeof (arelent *));
return ret;
}
-/* Canonicalize the dynamic relocation entries. Note that we return
- the dynamic relocations as a single block, although they are
- actually associated with particular sections; the interface, which
- was designed for SunOS style shared libraries, expects that there
- is only one set of dynamic relocs. Any section that was actually
- installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
- the dynamic symbol table, is considered to be a dynamic reloc
- section. */
+/* Canonicalize the dynamic relocation entries. Note that we return the
+ dynamic relocations as a single block, although they are actually
+ associated with particular sections; the interface, which was
+ designed for SunOS style shared libraries, expects that there is only
+ one set of dynamic relocs. Any loadable section that was actually
+ installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the
+ dynamic symbol table, is considered to be a dynamic reloc section. */
long
_bfd_elf_canonicalize_dynamic_reloc (bfd *abfd,
ret = 0;
for (s = abfd->sections; s != NULL; s = s->next)
{
- if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
+ if ((s->flags & SEC_LOAD) != 0
+ && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
&& (elf_section_data (s)->this_hdr.sh_type == SHT_REL
|| elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
{
if (! (*slurp_relocs) (abfd, s, syms, TRUE))
return -1;
- count = s->_raw_size / elf_section_data (s)->this_hdr.sh_entsize;
+ count = s->size / elf_section_data (s)->this_hdr.sh_entsize;
p = s->relocation;
for (i = 0; i < count; i++)
*storage++ = p++;
/* Read in the version information. */
bfd_boolean
-_bfd_elf_slurp_version_tables (bfd *abfd)
+_bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver)
{
bfd_byte *contents = NULL;
- bfd_size_type amt;
+ unsigned int freeidx = 0;
+
+ if (elf_dynverref (abfd) != 0)
+ {
+ Elf_Internal_Shdr *hdr;
+ Elf_External_Verneed *everneed;
+ Elf_Internal_Verneed *iverneed;
+ unsigned int i;
+ bfd_byte *contents_end;
+
+ hdr = &elf_tdata (abfd)->dynverref_hdr;
+
+ elf_tdata (abfd)->verref = bfd_zalloc2 (abfd, hdr->sh_info,
+ sizeof (Elf_Internal_Verneed));
+ if (elf_tdata (abfd)->verref == NULL)
+ goto error_return;
+
+ elf_tdata (abfd)->cverrefs = hdr->sh_info;
+
+ contents = bfd_malloc (hdr->sh_size);
+ if (contents == NULL)
+ {
+error_return_verref:
+ elf_tdata (abfd)->verref = NULL;
+ elf_tdata (abfd)->cverrefs = 0;
+ goto error_return;
+ }
+ if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
+ || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size)
+ goto error_return_verref;
+
+ if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verneed))
+ goto error_return_verref;
+
+ BFD_ASSERT (sizeof (Elf_External_Verneed)
+ == sizeof (Elf_External_Vernaux));
+ contents_end = contents + hdr->sh_size - sizeof (Elf_External_Verneed);
+ everneed = (Elf_External_Verneed *) contents;
+ iverneed = elf_tdata (abfd)->verref;
+ for (i = 0; i < hdr->sh_info; i++, iverneed++)
+ {
+ Elf_External_Vernaux *evernaux;
+ Elf_Internal_Vernaux *ivernaux;
+ unsigned int j;
+
+ _bfd_elf_swap_verneed_in (abfd, everneed, iverneed);
+
+ iverneed->vn_bfd = abfd;
+
+ iverneed->vn_filename =
+ bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
+ iverneed->vn_file);
+ if (iverneed->vn_filename == NULL)
+ goto error_return_verref;
+
+ if (iverneed->vn_cnt == 0)
+ iverneed->vn_auxptr = NULL;
+ else
+ {
+ iverneed->vn_auxptr = bfd_alloc2 (abfd, iverneed->vn_cnt,
+ sizeof (Elf_Internal_Vernaux));
+ if (iverneed->vn_auxptr == NULL)
+ goto error_return_verref;
+ }
+
+ if (iverneed->vn_aux
+ > (size_t) (contents_end - (bfd_byte *) everneed))
+ goto error_return_verref;
+
+ evernaux = ((Elf_External_Vernaux *)
+ ((bfd_byte *) everneed + iverneed->vn_aux));
+ ivernaux = iverneed->vn_auxptr;
+ for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++)
+ {
+ _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux);
+
+ ivernaux->vna_nodename =
+ bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
+ ivernaux->vna_name);
+ if (ivernaux->vna_nodename == NULL)
+ goto error_return_verref;
+
+ if (j + 1 < iverneed->vn_cnt)
+ ivernaux->vna_nextptr = ivernaux + 1;
+ else
+ ivernaux->vna_nextptr = NULL;
+
+ if (ivernaux->vna_next
+ > (size_t) (contents_end - (bfd_byte *) evernaux))
+ goto error_return_verref;
+
+ evernaux = ((Elf_External_Vernaux *)
+ ((bfd_byte *) evernaux + ivernaux->vna_next));
+
+ if (ivernaux->vna_other > freeidx)
+ freeidx = ivernaux->vna_other;
+ }
+
+ if (i + 1 < hdr->sh_info)
+ iverneed->vn_nextref = iverneed + 1;
+ else
+ iverneed->vn_nextref = NULL;
+
+ if (iverneed->vn_next
+ > (size_t) (contents_end - (bfd_byte *) everneed))
+ goto error_return_verref;
+
+ everneed = ((Elf_External_Verneed *)
+ ((bfd_byte *) everneed + iverneed->vn_next));
+ }
+
+ free (contents);
+ contents = NULL;
+ }
if (elf_dynverdef (abfd) != 0)
{
Elf_Internal_Verdef iverdefmem;
unsigned int i;
unsigned int maxidx;
+ bfd_byte *contents_end_def, *contents_end_aux;
hdr = &elf_tdata (abfd)->dynverdef_hdr;
|| bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size)
goto error_return;
+ if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verdef))
+ goto error_return;
+
+ BFD_ASSERT (sizeof (Elf_External_Verdef)
+ >= sizeof (Elf_External_Verdaux));
+ contents_end_def = contents + hdr->sh_size
+ - sizeof (Elf_External_Verdef);
+ contents_end_aux = contents + hdr->sh_size
+ - sizeof (Elf_External_Verdaux);
+
/* We know the number of entries in the section but not the maximum
index. Therefore we have to run through all entries and find
the maximum. */
if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx)
maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION);
+ if (iverdefmem.vd_next
+ > (size_t) (contents_end_def - (bfd_byte *) everdef))
+ goto error_return;
+
everdef = ((Elf_External_Verdef *)
((bfd_byte *) everdef + iverdefmem.vd_next));
}
- amt = (bfd_size_type) maxidx * sizeof (Elf_Internal_Verdef);
- elf_tdata (abfd)->verdef = bfd_zalloc (abfd, amt);
+ if (default_imported_symver)
+ {
+ if (freeidx > maxidx)
+ maxidx = ++freeidx;
+ else
+ freeidx = ++maxidx;
+ }
+ elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, maxidx,
+ sizeof (Elf_Internal_Verdef));
if (elf_tdata (abfd)->verdef == NULL)
goto error_return;
_bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem);
+ if ((iverdefmem.vd_ndx & VERSYM_VERSION) == 0)
+ {
+error_return_verdef:
+ elf_tdata (abfd)->verdef = NULL;
+ elf_tdata (abfd)->cverdefs = 0;
+ goto error_return;
+ }
+
iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1];
memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef));
iverdef->vd_bfd = abfd;
- amt = (bfd_size_type) iverdef->vd_cnt * sizeof (Elf_Internal_Verdaux);
- iverdef->vd_auxptr = bfd_alloc (abfd, amt);
- if (iverdef->vd_auxptr == NULL)
- goto error_return;
+ if (iverdef->vd_cnt == 0)
+ iverdef->vd_auxptr = NULL;
+ else
+ {
+ iverdef->vd_auxptr = bfd_alloc2 (abfd, iverdef->vd_cnt,
+ sizeof (Elf_Internal_Verdaux));
+ if (iverdef->vd_auxptr == NULL)
+ goto error_return_verdef;
+ }
+
+ if (iverdef->vd_aux
+ > (size_t) (contents_end_aux - (bfd_byte *) everdef))
+ goto error_return_verdef;
everdaux = ((Elf_External_Verdaux *)
((bfd_byte *) everdef + iverdef->vd_aux));
bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
iverdaux->vda_name);
if (iverdaux->vda_nodename == NULL)
- goto error_return;
+ goto error_return_verdef;
if (j + 1 < iverdef->vd_cnt)
iverdaux->vda_nextptr = iverdaux + 1;
else
iverdaux->vda_nextptr = NULL;
+ if (iverdaux->vda_next
+ > (size_t) (contents_end_aux - (bfd_byte *) everdaux))
+ goto error_return_verdef;
+
everdaux = ((Elf_External_Verdaux *)
((bfd_byte *) everdaux + iverdaux->vda_next));
}
- iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename;
+ if (iverdef->vd_cnt)
+ iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename;
- if (i + 1 < hdr->sh_info)
+ if ((size_t) (iverdef - iverdefarr) + 1 < maxidx)
iverdef->vd_nextdef = iverdef + 1;
else
iverdef->vd_nextdef = NULL;
free (contents);
contents = NULL;
}
-
- if (elf_dynverref (abfd) != 0)
+ else if (default_imported_symver)
{
- Elf_Internal_Shdr *hdr;
- Elf_External_Verneed *everneed;
- Elf_Internal_Verneed *iverneed;
- unsigned int i;
-
- hdr = &elf_tdata (abfd)->dynverref_hdr;
-
- amt = (bfd_size_type) hdr->sh_info * sizeof (Elf_Internal_Verneed);
- elf_tdata (abfd)->verref = bfd_zalloc (abfd, amt);
- if (elf_tdata (abfd)->verref == NULL)
- goto error_return;
-
- elf_tdata (abfd)->cverrefs = hdr->sh_info;
+ if (freeidx < 3)
+ freeidx = 3;
+ else
+ freeidx++;
- contents = bfd_malloc (hdr->sh_size);
- if (contents == NULL)
- goto error_return;
- if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
- || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size)
+ elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, freeidx,
+ sizeof (Elf_Internal_Verdef));
+ if (elf_tdata (abfd)->verdef == NULL)
goto error_return;
- everneed = (Elf_External_Verneed *) contents;
- iverneed = elf_tdata (abfd)->verref;
- for (i = 0; i < hdr->sh_info; i++, iverneed++)
- {
- Elf_External_Vernaux *evernaux;
- Elf_Internal_Vernaux *ivernaux;
- unsigned int j;
-
- _bfd_elf_swap_verneed_in (abfd, everneed, iverneed);
-
- iverneed->vn_bfd = abfd;
-
- iverneed->vn_filename =
- bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
- iverneed->vn_file);
- if (iverneed->vn_filename == NULL)
- goto error_return;
-
- amt = iverneed->vn_cnt;
- amt *= sizeof (Elf_Internal_Vernaux);
- iverneed->vn_auxptr = bfd_alloc (abfd, amt);
-
- evernaux = ((Elf_External_Vernaux *)
- ((bfd_byte *) everneed + iverneed->vn_aux));
- ivernaux = iverneed->vn_auxptr;
- for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++)
- {
- _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux);
+ elf_tdata (abfd)->cverdefs = freeidx;
+ }
- ivernaux->vna_nodename =
- bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
- ivernaux->vna_name);
- if (ivernaux->vna_nodename == NULL)
- goto error_return;
+ /* Create a default version based on the soname. */
+ if (default_imported_symver)
+ {
+ Elf_Internal_Verdef *iverdef;
+ Elf_Internal_Verdaux *iverdaux;
- if (j + 1 < iverneed->vn_cnt)
- ivernaux->vna_nextptr = ivernaux + 1;
- else
- ivernaux->vna_nextptr = NULL;
+ iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];;
- evernaux = ((Elf_External_Vernaux *)
- ((bfd_byte *) evernaux + ivernaux->vna_next));
- }
+ iverdef->vd_version = VER_DEF_CURRENT;
+ iverdef->vd_flags = 0;
+ iverdef->vd_ndx = freeidx;
+ iverdef->vd_cnt = 1;
- if (i + 1 < hdr->sh_info)
- iverneed->vn_nextref = iverneed + 1;
- else
- iverneed->vn_nextref = NULL;
+ iverdef->vd_bfd = abfd;
- everneed = ((Elf_External_Verneed *)
- ((bfd_byte *) everneed + iverneed->vn_next));
- }
+ iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd);
+ if (iverdef->vd_nodename == NULL)
+ goto error_return_verdef;
+ iverdef->vd_nextdef = NULL;
+ iverdef->vd_auxptr = bfd_alloc (abfd, sizeof (Elf_Internal_Verdaux));
+ if (iverdef->vd_auxptr == NULL)
+ goto error_return_verdef;
- free (contents);
- contents = NULL;
+ iverdaux = iverdef->vd_auxptr;
+ iverdaux->vda_nodename = iverdef->vd_nodename;
+ iverdaux->vda_nextptr = NULL;
}
return TRUE;
const char **functionname_ptr)
{
const char *filename;
- asymbol *func;
+ asymbol *func, *file;
bfd_vma low_func;
asymbol **p;
+ /* ??? Given multiple file symbols, it is impossible to reliably
+ choose the right file name for global symbols. File symbols are
+ local symbols, and thus all file symbols must sort before any
+ global symbols. The ELF spec may be interpreted to say that a
+ file symbol must sort before other local symbols, but currently
+ ld -r doesn't do this. So, for ld -r output, it is possible to
+ make a better choice of file name for local symbols by ignoring
+ file symbols appearing after a given local symbol. */
+ enum { nothing_seen, symbol_seen, file_after_symbol_seen } state;
filename = NULL;
func = NULL;
+ file = NULL;
low_func = 0;
+ state = nothing_seen;
for (p = symbols; *p != NULL; p++)
{
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_FILE:
- filename = bfd_asymbol_name (&q->symbol);
- break;
+ file = &q->symbol;
+ if (state == symbol_seen)
+ state = file_after_symbol_seen;
+ continue;
+ case STT_SECTION:
+ continue;
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)
{
func = (asymbol *) q;
low_func = q->symbol.value;
+ if (file == NULL)
+ filename = NULL;
+ else if (ELF_ST_BIND (q->internal_elf_sym.st_info) != STB_LOCAL
+ && state == file_after_symbol_seen)
+ filename = NULL;
+ else
+ filename = bfd_asymbol_name (file);
}
break;
}
+ if (state == nothing_seen)
+ state = symbol_seen;
}
if (func == NULL)
return TRUE;
}
+/* Find the line for a symbol. */
+
+bfd_boolean
+_bfd_elf_find_line (bfd *abfd, asymbol **symbols, asymbol *symbol,
+ const char **filename_ptr, unsigned int *line_ptr)
+{
+ return _bfd_dwarf2_find_line (abfd, symbols, symbol,
+ filename_ptr, line_ptr, 0,
+ &elf_tdata (abfd)->dwarf2_find_line_info);
+}
+
+/* After a call to bfd_find_nearest_line, successive calls to
+ bfd_find_inliner_info can be used to get source information about
+ each level of function inlining that terminated at the address
+ passed to bfd_find_nearest_line. Currently this is only supported
+ for DWARF2 with appropriate DWARF3 extensions. */
+
+bfd_boolean
+_bfd_elf_find_inliner_info (bfd *abfd,
+ const char **filename_ptr,
+ const char **functionname_ptr,
+ unsigned int *line_ptr)
+{
+ bfd_boolean found;
+ found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
+ functionname_ptr, line_ptr,
+ & elf_tdata (abfd)->dwarf2_find_line_info);
+ return found;
+}
+
int
_bfd_elf_sizeof_headers (bfd *abfd, bfd_boolean reloc)
{
fail:
(*_bfd_error_handler)
- (_("%s: unsupported relocation type %s"),
- bfd_archive_filename (abfd), areloc->howto->name);
+ (_("%B: unsupported relocation type %s"),
+ abfd, areloc->howto->name);
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
{
if (elf_shstrtab (abfd) != NULL)
_bfd_elf_strtab_free (elf_shstrtab (abfd));
+ _bfd_dwarf2_cleanup_debug_info (abfd);
}
return _bfd_generic_close_and_cleanup (abfd);
if (sect2 == NULL)
return FALSE;
- sect2->_raw_size = sect->_raw_size;
+ sect2->size = sect->size;
sect2->filepos = sect->filepos;
sect2->flags = sect->flags;
sect2->alignment_power = sect->alignment_power;
sect = bfd_make_section_anyway (abfd, threaded_name);
if (sect == NULL)
return FALSE;
- sect->_raw_size = size;
+ sect->size = size;
sect->filepos = filepos;
sect->flags = SEC_HAS_CONTENTS;
sect->alignment_power = 2;
static bfd_boolean
elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
{
- size_t raw_size;
+ size_t size;
int offset;
if (note->descsz == sizeof (prstatus_t))
{
prstatus_t prstat;
- raw_size = sizeof (prstat.pr_reg);
+ size = sizeof (prstat.pr_reg);
offset = offsetof (prstatus_t, pr_reg);
memcpy (&prstat, note->descdata, sizeof (prstat));
/* 64-bit host, 32-bit corefile */
prstatus32_t prstat;
- raw_size = sizeof (prstat.pr_reg);
+ size = sizeof (prstat.pr_reg);
offset = offsetof (prstatus32_t, pr_reg);
memcpy (&prstat, note->descdata, sizeof (prstat));
/* Make a ".reg/999" section and a ".reg" section. */
return _bfd_elfcore_make_pseudosection (abfd, ".reg",
- raw_size, note->descpos + offset);
+ size, note->descpos + offset);
}
#endif /* defined (HAVE_PRSTATUS_T) */
return FALSE;
#if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
- sect->_raw_size = sizeof (lwpstat.pr_context.uc_mcontext.gregs);
+ sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs);
sect->filepos = note->descpos
+ offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs);
#endif
#if defined (HAVE_LWPSTATUS_T_PR_REG)
- sect->_raw_size = sizeof (lwpstat.pr_reg);
+ sect->size = sizeof (lwpstat.pr_reg);
sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg);
#endif
return FALSE;
#if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
- sect->_raw_size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs);
+ sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs);
sect->filepos = note->descpos
+ offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs);
#endif
#if defined (HAVE_LWPSTATUS_T_PR_FPREG)
- sect->_raw_size = sizeof (lwpstat.pr_fpreg);
+ sect->size = sizeof (lwpstat.pr_fpreg);
sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg);
#endif
case NOTE_INFO_THREAD:
/* Make a ".reg/999" section. */
- sprintf (buf, ".reg/%d", pstatus.data.thread_info.tid);
+ sprintf (buf, ".reg/%ld", (long) pstatus.data.thread_info.tid);
len = strlen (buf) + 1;
name = bfd_alloc (abfd, len);
if (sect == NULL)
return FALSE;
- sect->_raw_size = sizeof (pstatus.data.thread_info.thread_context);
+ sect->size = sizeof (pstatus.data.thread_info.thread_context);
sect->filepos = (note->descpos
+ offsetof (struct win32_pstatus,
data.thread_info.thread_context));
case NOTE_INFO_MODULE:
/* Make a ".module/xxxxxxxx" section. */
- sprintf (buf, ".module/%08x", pstatus.data.module_info.base_address);
+ sprintf (buf, ".module/%08lx",
+ (long) pstatus.data.module_info.base_address);
len = strlen (buf) + 1;
name = bfd_alloc (abfd, len);
if (sect == NULL)
return FALSE;
- sect->_raw_size = note->descsz;
+ sect->size = note->descsz;
sect->filepos = note->descpos;
sect->flags = SEC_HAS_CONTENTS;
sect->alignment_power = 2;
if (sect == NULL)
return FALSE;
- sect->_raw_size = note->descsz;
+ sect->size = note->descsz;
sect->filepos = note->descpos;
sect->flags = SEC_HAS_CONTENTS;
sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32;
elf_tdata (abfd)->core_lwpid = *tid;
/* Make a ".qnx_core_status/%d" section. */
- sprintf (buf, ".qnx_core_status/%d", *tid);
+ sprintf (buf, ".qnx_core_status/%ld", (long) *tid);
name = bfd_alloc (abfd, strlen (buf) + 1);
if (name == NULL)
if (sect == NULL)
return FALSE;
- sect->_raw_size = note->descsz;
+ sect->size = note->descsz;
sect->filepos = note->descpos;
sect->flags = SEC_HAS_CONTENTS;
sect->alignment_power = 2;
}
static bfd_boolean
-elfcore_grok_nto_gregs (bfd *abfd, Elf_Internal_Note *note, pid_t tid)
+elfcore_grok_nto_regs (bfd *abfd,
+ Elf_Internal_Note *note,
+ pid_t tid,
+ char *base)
{
char buf[100];
char *name;
asection *sect;
- /* Make a ".reg/%d" section. */
- sprintf (buf, ".reg/%d", tid);
+ /* Make a "(base)/%d" section. */
+ sprintf (buf, "%s/%ld", base, (long) tid);
name = bfd_alloc (abfd, strlen (buf) + 1);
if (name == NULL)
if (sect == NULL)
return FALSE;
- sect->_raw_size = note->descsz;
+ sect->size = note->descsz;
sect->filepos = note->descpos;
sect->flags = SEC_HAS_CONTENTS;
sect->alignment_power = 2;
/* This is the current thread. */
if (elf_tdata (abfd)->core_lwpid == tid)
- return elfcore_maybe_make_sect (abfd, ".reg", sect);
+ return elfcore_maybe_make_sect (abfd, base, sect);
return TRUE;
}
switch (note->type)
{
- case BFD_QNT_CORE_INFO: return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note);
- case BFD_QNT_CORE_STATUS: return elfcore_grok_nto_status (abfd, note, &tid);
- case BFD_QNT_CORE_GREG: return elfcore_grok_nto_gregs (abfd, note, tid);
- case BFD_QNT_CORE_FPREG: return elfcore_grok_prfpreg (abfd, note);
- default: return TRUE;
+ case BFD_QNT_CORE_INFO:
+ return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note);
+ case BFD_QNT_CORE_STATUS:
+ return elfcore_grok_nto_status (abfd, note, &tid);
+ case BFD_QNT_CORE_GREG:
+ return elfcore_grok_nto_regs (abfd, note, tid, ".reg");
+ case BFD_QNT_CORE_FPREG:
+ return elfcore_grok_nto_regs (abfd, note, tid, ".reg2");
+ default:
+ return TRUE;
}
}
rel->r_addend =
_bfd_merged_section_offset (abfd, psec,
elf_section_data (sec)->sec_info,
- sym->st_value + rel->r_addend,
- 0);
- sec = *psec;
+ sym->st_value + rel->r_addend);
+ if (sec != *psec)
+ {
+ /* If we have changed the section, and our original section is
+ marked with SEC_EXCLUDE, it means that the original
+ SEC_MERGE section has been completely subsumed in some
+ other SEC_MERGE section. In this case, we need to leave
+ some info around for --emit-relocs. */
+ if ((sec->flags & SEC_EXCLUDE) != 0)
+ sec->kept_section = *psec;
+ sec = *psec;
+ }
rel->r_addend -= relocation;
rel->r_addend += sec->output_section->vma + sec->output_offset;
}
return _bfd_merged_section_offset (abfd, psec,
elf_section_data (sec)->sec_info,
- sym->st_value + addend, 0);
+ sym->st_value + addend);
}
bfd_vma
asection *sec,
bfd_vma offset)
{
- struct bfd_elf_section_data *sec_data;
-
- sec_data = elf_section_data (sec);
switch (sec->sec_info_type)
{
case ELF_INFO_TYPE_STABS:
- return _bfd_stab_section_offset (abfd,
- &elf_hash_table (info)->merge_info,
- sec, &sec_data->sec_info, 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;
}
(bfd *templ,
bfd_vma ehdr_vma,
bfd_vma *loadbasep,
- int (*target_read_memory) (bfd_vma, char *, int))
+ int (*target_read_memory) (bfd_vma, bfd_byte *, int))
{
return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory)
(templ, ehdr_vma, loadbasep, target_read_memory);
}
+\f
+long
+_bfd_elf_get_synthetic_symtab (bfd *abfd,
+ long symcount ATTRIBUTE_UNUSED,
+ asymbol **syms ATTRIBUTE_UNUSED,
+ long dynsymcount,
+ asymbol **dynsyms,
+ asymbol **ret)
+{
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ asection *relplt;
+ asymbol *s;
+ const char *relplt_name;
+ bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
+ arelent *p;
+ long count, i, n;
+ size_t size;
+ Elf_Internal_Shdr *hdr;
+ char *names;
+ asection *plt;
+
+ *ret = NULL;
+
+ if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
+ return 0;
+
+ if (dynsymcount <= 0)
+ return 0;
+
+ if (!bed->plt_sym_val)
+ return 0;
+
+ relplt_name = bed->relplt_name;
+ if (relplt_name == NULL)
+ relplt_name = bed->default_use_rela_p ? ".rela.plt" : ".rel.plt";
+ relplt = bfd_get_section_by_name (abfd, relplt_name);
+ if (relplt == NULL)
+ return 0;
+
+ hdr = &elf_section_data (relplt)->this_hdr;
+ if (hdr->sh_link != elf_dynsymtab (abfd)
+ || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA))
+ return 0;
+
+ plt = bfd_get_section_by_name (abfd, ".plt");
+ if (plt == NULL)
+ return 0;
+
+ slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
+ if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
+ return -1;
+
+ count = relplt->size / hdr->sh_entsize;
+ size = count * sizeof (asymbol);
+ p = relplt->relocation;
+ for (i = 0; i < count; i++, s++, p++)
+ size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
+
+ s = *ret = bfd_malloc (size);
+ if (s == NULL)
+ return -1;
+
+ names = (char *) (s + count);
+ p = relplt->relocation;
+ n = 0;
+ for (i = 0; i < count; i++, s++, p++)
+ {
+ size_t len;
+ bfd_vma addr;
+
+ addr = bed->plt_sym_val (i, plt, p);
+ if (addr == (bfd_vma) -1)
+ continue;
+
+ *s = **p->sym_ptr_ptr;
+ s->section = plt;
+ s->value = addr - plt->vma;
+ s->name = names;
+ len = strlen ((*p->sym_ptr_ptr)->name);
+ memcpy (names, (*p->sym_ptr_ptr)->name, len);
+ names += len;
+ memcpy (names, "@plt", sizeof ("@plt"));
+ names += sizeof ("@plt");
+ ++n;
+ }
+
+ return n;
+}
+
+/* Sort symbol by binding and section. We want to put definitions
+ sorted by section at the beginning. */
+
+static int
+elf_sort_elf_symbol (const void *arg1, const void *arg2)
+{
+ const Elf_Internal_Sym *s1;
+ const Elf_Internal_Sym *s2;
+ int shndx;
+
+ /* Make sure that undefined symbols are at the end. */
+ s1 = (const Elf_Internal_Sym *) arg1;
+ if (s1->st_shndx == SHN_UNDEF)
+ return 1;
+ s2 = (const Elf_Internal_Sym *) arg2;
+ if (s2->st_shndx == SHN_UNDEF)
+ return -1;
+
+ /* Sorted by section index. */
+ shndx = s1->st_shndx - s2->st_shndx;
+ if (shndx != 0)
+ return shndx;
+
+ /* Sorted by binding. */
+ return ELF_ST_BIND (s1->st_info) - ELF_ST_BIND (s2->st_info);
+}
+
+struct elf_symbol
+{
+ Elf_Internal_Sym *sym;
+ const char *name;
+};
+
+static int
+elf_sym_name_compare (const void *arg1, const void *arg2)
+{
+ const struct elf_symbol *s1 = (const struct elf_symbol *) arg1;
+ const struct elf_symbol *s2 = (const struct elf_symbol *) arg2;
+ return strcmp (s1->name, s2->name);
+}
+
+/* Check if 2 sections define the same set of local and global
+ symbols. */
+
+bfd_boolean
+bfd_elf_match_symbols_in_sections (asection *sec1, asection *sec2)
+{
+ bfd *bfd1, *bfd2;
+ const struct elf_backend_data *bed1, *bed2;
+ Elf_Internal_Shdr *hdr1, *hdr2;
+ bfd_size_type symcount1, symcount2;
+ Elf_Internal_Sym *isymbuf1, *isymbuf2;
+ Elf_Internal_Sym *isymstart1 = NULL, *isymstart2 = NULL, *isym;
+ Elf_Internal_Sym *isymend;
+ struct elf_symbol *symp, *symtable1 = NULL, *symtable2 = NULL;
+ bfd_size_type count1, count2, i;
+ int shndx1, shndx2;
+ bfd_boolean result;
+
+ bfd1 = sec1->owner;
+ bfd2 = sec2->owner;
+
+ /* If both are .gnu.linkonce sections, they have to have the same
+ section name. */
+ if (strncmp (sec1->name, ".gnu.linkonce",
+ sizeof ".gnu.linkonce" - 1) == 0
+ && strncmp (sec2->name, ".gnu.linkonce",
+ sizeof ".gnu.linkonce" - 1) == 0)
+ return strcmp (sec1->name + sizeof ".gnu.linkonce",
+ sec2->name + sizeof ".gnu.linkonce") == 0;
+
+ /* Both sections have to be in ELF. */
+ if (bfd_get_flavour (bfd1) != bfd_target_elf_flavour
+ || bfd_get_flavour (bfd2) != bfd_target_elf_flavour)
+ return FALSE;
+
+ if (elf_section_type (sec1) != elf_section_type (sec2))
+ return FALSE;
+
+ if ((elf_section_flags (sec1) & SHF_GROUP) != 0
+ && (elf_section_flags (sec2) & SHF_GROUP) != 0)
+ {
+ /* If both are members of section groups, they have to have the
+ same group name. */
+ if (strcmp (elf_group_name (sec1), elf_group_name (sec2)) != 0)
+ return FALSE;
+ }
+
+ shndx1 = _bfd_elf_section_from_bfd_section (bfd1, sec1);
+ shndx2 = _bfd_elf_section_from_bfd_section (bfd2, sec2);
+ if (shndx1 == -1 || shndx2 == -1)
+ return FALSE;
+
+ bed1 = get_elf_backend_data (bfd1);
+ bed2 = get_elf_backend_data (bfd2);
+ hdr1 = &elf_tdata (bfd1)->symtab_hdr;
+ symcount1 = hdr1->sh_size / bed1->s->sizeof_sym;
+ hdr2 = &elf_tdata (bfd2)->symtab_hdr;
+ symcount2 = hdr2->sh_size / bed2->s->sizeof_sym;
+
+ if (symcount1 == 0 || symcount2 == 0)
+ return FALSE;
+
+ isymbuf1 = bfd_elf_get_elf_syms (bfd1, hdr1, symcount1, 0,
+ NULL, NULL, NULL);
+ isymbuf2 = bfd_elf_get_elf_syms (bfd2, hdr2, symcount2, 0,
+ NULL, NULL, NULL);
+
+ result = FALSE;
+ if (isymbuf1 == NULL || isymbuf2 == NULL)
+ goto done;
+
+ /* Sort symbols by binding and section. Global definitions are at
+ the beginning. */
+ qsort (isymbuf1, symcount1, sizeof (Elf_Internal_Sym),
+ elf_sort_elf_symbol);
+ qsort (isymbuf2, symcount2, sizeof (Elf_Internal_Sym),
+ elf_sort_elf_symbol);
+
+ /* Count definitions in the section. */
+ count1 = 0;
+ for (isym = isymbuf1, isymend = isym + symcount1;
+ isym < isymend; isym++)
+ {
+ if (isym->st_shndx == (unsigned int) shndx1)
+ {
+ if (count1 == 0)
+ isymstart1 = isym;
+ count1++;
+ }
+
+ if (count1 && isym->st_shndx != (unsigned int) shndx1)
+ break;
+ }
+
+ count2 = 0;
+ for (isym = isymbuf2, isymend = isym + symcount2;
+ isym < isymend; isym++)
+ {
+ if (isym->st_shndx == (unsigned int) shndx2)
+ {
+ if (count2 == 0)
+ isymstart2 = isym;
+ count2++;
+ }
+
+ if (count2 && isym->st_shndx != (unsigned int) shndx2)
+ break;
+ }
+
+ if (count1 == 0 || count2 == 0 || count1 != count2)
+ goto done;
+
+ symtable1 = bfd_malloc (count1 * sizeof (struct elf_symbol));
+ symtable2 = bfd_malloc (count1 * sizeof (struct elf_symbol));
+
+ if (symtable1 == NULL || symtable2 == NULL)
+ goto done;
+
+ symp = symtable1;
+ for (isym = isymstart1, isymend = isym + count1;
+ isym < isymend; isym++)
+ {
+ symp->sym = isym;
+ symp->name = bfd_elf_string_from_elf_section (bfd1,
+ hdr1->sh_link,
+ isym->st_name);
+ symp++;
+ }
+
+ symp = symtable2;
+ for (isym = isymstart2, isymend = isym + count1;
+ isym < isymend; isym++)
+ {
+ symp->sym = isym;
+ symp->name = bfd_elf_string_from_elf_section (bfd2,
+ hdr2->sh_link,
+ isym->st_name);
+ symp++;
+ }
+
+ /* Sort symbol by name. */
+ qsort (symtable1, count1, sizeof (struct elf_symbol),
+ elf_sym_name_compare);
+ qsort (symtable2, count1, sizeof (struct elf_symbol),
+ elf_sym_name_compare);
+
+ for (i = 0; i < count1; i++)
+ /* Two symbols must have the same binding, type and name. */
+ if (symtable1 [i].sym->st_info != symtable2 [i].sym->st_info
+ || symtable1 [i].sym->st_other != symtable2 [i].sym->st_other
+ || strcmp (symtable1 [i].name, symtable2 [i].name) != 0)
+ goto done;
+
+ result = TRUE;
+
+done:
+ if (symtable1)
+ free (symtable1);
+ if (symtable2)
+ free (symtable2);
+ if (isymbuf1)
+ free (isymbuf1);
+ if (isymbuf2)
+ free (isymbuf2);
+
+ return result;
+}
projects / deliverable / binutils-gdb.git / blobdiff