/* ELF executable support for BFD.
- Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
- 2003 Free Software Foundation, Inc.
+
+ Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
+ 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
#include "libiberty.h"
static int elf_sort_sections (const void *, const void *);
-static bfd_boolean assign_file_positions_except_relocs (bfd *);
+static bfd_boolean assign_file_positions_except_relocs (bfd *, struct bfd_link_info *);
static bfd_boolean prep_headers (bfd *);
static bfd_boolean swap_out_syms (bfd *, struct bfd_strtab_hash **, int) ;
static bfd_boolean elfcore_read_notes (bfd *, file_ptr, bfd_size_type) ;
file, into a newly allocated buffer, and return a pointer to the
buffer. */
-static char *
+static bfd_byte *
elf_read (bfd *abfd, file_ptr offset, bfd_size_type size)
{
- char *buf;
+ bfd_byte *buf;
if ((buf = bfd_alloc (abfd, size)) == NULL)
return NULL;
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. */
shstrtab = elf_read (abfd, offset, shstrtabsize);
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 "";
}
/* 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
&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 *);
+ bfd_size_type amt;
+
+ elf_tdata (abfd)->num_group = num_group;
+ amt = num_group * sizeof (Elf_Internal_Shdr *);
elf_tdata (abfd)->group_sect_ptr = bfd_alloc (abfd, amt);
if (elf_tdata (abfd)->group_sect_ptr == NULL)
return FALSE;
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;
}
}
- 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)
{
- if (!is_elf_hash_table (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;
}
{
sec->output_section = bfd_abs_section_ptr;
sec->output_offset = sec->vma;
- if (!is_elf_hash_table (info))
+ if (!is_elf_hash_table (info->hash))
return;
sec->sec_info_type = ELF_INFO_TYPE_JUST_SYMS;
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;
}
/* Set local fields. */
ret->indx = -1;
ret->dynindx = -1;
- ret->dynstr_index = 0;
- ret->elf_hash_value = 0;
- ret->weakdef = NULL;
- ret->verinfo.verdef = NULL;
- ret->vtable_entries_size = 0;
- ret->vtable_entries_used = NULL;
- ret->vtable_parent = NULL;
- ret->got = htab->init_refcount;
- ret->plt = htab->init_refcount;
- ret->size = 0;
- ret->type = STT_NOTYPE;
- ret->other = 0;
+ ret->got = ret->plt = htab->init_refcount;
+ memset (&ret->size, 0, (sizeof (struct elf_link_hash_entry)
+ - offsetof (struct elf_link_hash_entry, size)));
/* Assume that we have been called by a non-ELF symbol reader.
This flag is then reset by the code which reads an ELF input
file. This ensures that a symbol created by a non-ELF symbol
reader will have the flag set correctly. */
- ret->elf_link_hash_flags = ELF_LINK_NON_ELF;
+ ret->non_elf = 1;
}
return entry;
/* Copy down any references that we may have already seen to the
symbol which just became indirect. */
- dir->elf_link_hash_flags |=
- (ind->elf_link_hash_flags
- & (ELF_LINK_HASH_REF_DYNAMIC
- | ELF_LINK_HASH_REF_REGULAR
- | ELF_LINK_HASH_REF_REGULAR_NONWEAK
- | ELF_LINK_NON_GOT_REF));
+ dir->ref_dynamic |= ind->ref_dynamic;
+ dir->ref_regular |= ind->ref_regular;
+ dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
+ dir->non_got_ref |= ind->non_got_ref;
+ dir->needs_plt |= ind->needs_plt;
+ dir->pointer_equality_needed |= ind->pointer_equality_needed;
if (ind->root.type != bfd_link_hash_indirect)
return;
bfd_boolean force_local)
{
h->plt = elf_hash_table (info)->init_offset;
- h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
+ h->needs_plt = 0;
if (force_local)
{
- h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL;
+ h->forced_local = 1;
if (h->dynindx != -1)
{
h->dynindx = -1;
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;
/* This is a hook for the ELF emulation code in the generic linker to
tell the backend linker what file name to use for the DT_NEEDED
- entry for a dynamic object. The generic linker passes name as an
- empty string to indicate that no DT_NEEDED entry should be made. */
+ entry for a dynamic object. */
void
bfd_elf_set_dt_needed_name (bfd *abfd, const char *name)
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_dt_needed_soname (bfd *abfd, const char *name)
+bfd_elf_set_dyn_lib_class (bfd *abfd, int lib_class)
{
if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
&& bfd_get_format (abfd) == bfd_object)
- elf_dt_soname (abfd) = name;
+ elf_dyn_lib_class (abfd) = lib_class;
}
/* Get the list of DT_NEEDED entries for a link. This is a hook for
bfd_elf_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED,
struct bfd_link_info *info)
{
- if (! is_elf_hash_table (info))
+ if (! is_elf_hash_table (info->hash))
return NULL;
return elf_hash_table (info)->needed;
}
bfd_elf_get_runpath_list (bfd *abfd ATTRIBUTE_UNUSED,
struct bfd_link_info *info)
{
- if (! is_elf_hash_table (info))
+ if (! is_elf_hash_table (info->hash))
return NULL;
return elf_hash_table (info)->runpath;
}
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);
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 (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB)
{
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 */
/* 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)
+ {
+ 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:
|| 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);
if (! bfd_section_from_shdr (abfd, hdr->sh_info))
return FALSE;
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:
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:
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;
static struct bfd_elf_special_section const special_sections[] =
{
{ ".bss", 4, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
+ { ".gnu.linkonce.b",15, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
{ ".comment", 8, 0, SHT_PROGBITS, 0 },
{ ".data", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
{ ".data1", 6, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
{ ".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 },
+ { ".note.GNU-stack",15, 0, SHT_PROGBITS, 0 },
{ ".note", 5, -1, SHT_NOTE, 0 },
{ ".rela", 5, -1, SHT_RELA, 0 },
{ ".rel", 4, -1, SHT_REL, 0 },
{ ".stabstr", 5, 3, SHT_STRTAB, 0 },
+ { ".gnu.liblist", 12, 0, SHT_GNU_LIBLIST, SHF_ALLOC },
+ { ".gnu.conflict", 13, 0, SHT_RELA, SHF_ALLOC },
{ NULL, 0, 0, 0, 0 }
};
sec->used_by_bfd = sdata;
}
- elf_section_type (sec) = SHT_NULL;
- ssect = _bfd_elf_get_sec_type_attr (abfd, sec->name);
- if (ssect != NULL)
+ /* 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 = _bfd_elf_get_sec_type_attr (abfd, sec->name);
+ 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. */
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));
+ /* SHT_GROUP sections are in relocatable files only. */
+ if (link_info == NULL || link_info->relocatable)
+ {
+ /* 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)
{
- struct bfd_elf_section_data *d = elf_section_data (sec);
+ d = elf_section_data (sec);
- if (section_number == SHN_LORESERVE)
- section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
- d->this_idx = section_number++;
+ 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;
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
{
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. */
/* sh_offset is set in assign_file_positions_except_relocs. */
shstrtab_hdr->sh_addralign = 1;
- if (!assign_file_positions_except_relocs (abfd))
+ if (!assign_file_positions_except_relocs (abfd, link_info))
return FALSE;
if (link_info == NULL && bfd_get_symcount (abfd) > 0)
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
struct elf_segment_map **pm;
struct elf_segment_map *m;
asection *last_hdr;
+ bfd_vma last_size;
unsigned int phdr_index;
bfd_vma maxpagesize;
asection **hdrpp;
segment when the start of the second section can be placed within
a few bytes of the end of the first section. */
last_hdr = NULL;
+ last_size = 0;
phdr_index = 0;
maxpagesize = get_elf_backend_data (abfd)->maxpagesize;
writable = FALSE;
segment. */
new_segment = TRUE;
}
- else if (BFD_ALIGN (last_hdr->lma + last_hdr->_raw_size, maxpagesize)
+ else if (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize)
< BFD_ALIGN (hdr->lma, maxpagesize))
{
/* If putting this section in this segment would force us to
skip a page in the segment, then we need a new segment. */
new_segment = TRUE;
}
- else if ((last_hdr->flags & SEC_LOAD) == 0
- && (hdr->flags & SEC_LOAD) != 0)
+ else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0
+ && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0)
{
/* We don't want to put a loadable section after a
- nonloadable section in the same segment. */
+ nonloadable section in the same segment.
+ Consider .tbss sections as loadable for this purpose. */
new_segment = TRUE;
}
else if ((abfd->flags & D_PAGED) == 0)
}
else if (! writable
&& (hdr->flags & SEC_READONLY) == 0
- && (((last_hdr->lma + last_hdr->_raw_size - 1)
+ && (((last_hdr->lma + last_size - 1)
& ~(maxpagesize - 1))
!= (hdr->lma & ~(maxpagesize - 1))))
{
if ((hdr->flags & SEC_READONLY) == 0)
writable = TRUE;
last_hdr = hdr;
+ /* .tbss sections effectively have zero size. */
+ if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL)
+ last_size = hdr->size;
+ else
+ last_size = 0;
continue;
}
writable = FALSE;
last_hdr = hdr;
+ /* .tbss sections effectively have zero size. */
+ if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL)
+ last_size = hdr->size;
+ else
+ last_size = 0;
phdr_index = i;
phdr_in_segment = FALSE;
}
/* 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;
return sec1->target_index - sec2->target_index;
}
+/* Ian Lance Taylor writes:
+
+ We shouldn't be using % with a negative signed number. That's just
+ not good. We have to make sure either that the number is not
+ negative, or that the number has an unsigned type. When the types
+ are all the same size they wind up as unsigned. When file_ptr is a
+ larger signed type, the arithmetic winds up as signed long long,
+ which is wrong.
+
+ What we're trying to say here is something like ``increase OFF by
+ the least amount that will cause it to be equal to the VMA modulo
+ the page size.'' */
+/* In other words, something like:
+
+ vma_offset = m->sections[0]->vma % bed->maxpagesize;
+ off_offset = off % bed->maxpagesize;
+ if (vma_offset < off_offset)
+ adjustment = vma_offset + bed->maxpagesize - off_offset;
+ else
+ adjustment = vma_offset - off_offset;
+
+ which can can be collapsed into the expression below. */
+
+static file_ptr
+vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize)
+{
+ return ((vma - off) % maxpagesize);
+}
+
/* Assign file positions to the sections based on the mapping from
sections to segments. This function also sets up some fields in
the file header, and writes out the program headers. */
static bfd_boolean
-assign_file_positions_for_segments (bfd *abfd)
+assign_file_positions_for_segments (bfd *abfd, struct bfd_link_info *link_info)
{
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
unsigned int count;
if (bed->elf_backend_modify_segment_map)
{
- if (! (*bed->elf_backend_modify_segment_map) (abfd))
+ if (! (*bed->elf_backend_modify_segment_map) (abfd, link_info))
return FALSE;
}
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;
}
qsort (m->sections, (size_t) m->count, sizeof (asection *),
elf_sort_sections);
+ /* An ELF segment (described by Elf_Internal_Phdr) may contain a
+ number of sections with contents contributing to both p_filesz
+ and p_memsz, followed by a number of sections with no contents
+ that just contribute to p_memsz. In this loop, OFF tracks next
+ available file offset for PT_LOAD and PT_NOTE segments. VOFF is
+ an adjustment we use for segments that have no file contents
+ but need zero filled memory allocation. */
+ voff = 0;
p->p_type = m->p_type;
p->p_flags = m->p_flags;
if (p->p_type == PT_LOAD
- && m->count > 0
- && (m->sections[0]->flags & SEC_ALLOC) != 0)
+ && m->count > 0)
{
+ bfd_size_type align;
+ bfd_vma adjust;
+
if ((abfd->flags & D_PAGED) != 0)
- off += (m->sections[0]->vma - off) % bed->maxpagesize;
+ align = bed->maxpagesize;
else
{
- bfd_size_type align;
-
- align = 0;
+ unsigned int align_power = 0;
for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
{
- bfd_size_type secalign;
+ unsigned int secalign;
secalign = bfd_get_section_alignment (abfd, *secpp);
- if (secalign > align)
- align = secalign;
+ if (secalign > align_power)
+ align_power = secalign;
}
+ align = (bfd_size_type) 1 << align_power;
+ }
- off += (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. */
+ modulo the page size. */
+ bfd_size_type page = align;
if ((abfd->flags & D_PAGED) != 0)
- adjust = (sec->vma - voff) % bed->maxpagesize;
- else
- adjust = (sec->vma - voff) % align;
- }
- else
- adjust = 0;
-
- if (adjust != 0)
- {
- if (i == 0)
- {
- (* _bfd_error_handler) (_("\
-Error: First section in segment (%s) starts at 0x%x whereas the segment starts at 0x%x"),
- bfd_section_name (abfd, sec),
- sec->lma,
- p->p_paddr);
- return FALSE;
- }
+ page = bed->maxpagesize;
+ adjust = vma_page_aligned_bias (sec->vma,
+ p->p_vaddr + p->p_memsz,
+ page);
p->p_memsz += adjust;
- off += adjust;
- voff += adjust;
- if ((flags & SEC_LOAD) != 0)
- p->p_filesz += adjust;
}
-
- sec->filepos = off;
-
- /* We check SEC_HAS_CONTENTS here because if NOLOAD is
- used in a linker script we may have a section with
- SEC_LOAD clear but which is supposed to have
- contents. */
- if ((flags & SEC_LOAD) != 0
- || (flags & SEC_HAS_CONTENTS) != 0)
- off += sec->_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. */
static bfd_boolean
-assign_file_positions_except_relocs (bfd *abfd)
+assign_file_positions_except_relocs (bfd *abfd,
+ struct bfd_link_info *link_info)
{
struct elf_obj_tdata * const tdata = elf_tdata (abfd);
Elf_Internal_Ehdr * const i_ehdrp = elf_elfheader (abfd);
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)
/* Assign file positions for the loaded sections based on the
assignment of sections to segments. */
- if (! assign_file_positions_for_segments (abfd))
+ if (! assign_file_positions_for_segments (abfd, link_info))
return FALSE;
/* Assign file positions for the other sections. */
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)));
if ((abfd->flags & D_PAGED) != 0)
- off += (hdr->sh_addr - off) % bed->maxpagesize;
+ off += vma_page_aligned_bias (hdr->sh_addr, off,
+ bed->maxpagesize);
else
- off += (hdr->sh_addr - off) % hdr->sh_addralign;
+ off += vma_page_aligned_bias (hdr->sh_addr, off,
+ hdr->sh_addralign);
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;
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.
2. It is an allocated segment,
3. There is an output section associated with it,
4. The section has not already been allocated to a previous segment.
- 5. PT_TLS segment includes only SHF_TLS sections.
- 6. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. */
+ 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.
+ 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) \
&& (section->flags & SEC_ALLOC) != 0) \
|| IS_COREFILE_NOTE (segment, section)) \
&& section->output_section != NULL \
+ && segment->p_type != PT_GNU_STACK \
&& (segment->p_type != PT_TLS \
|| (section->flags & SEC_THREAD_LOCAL)) \
&& (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. */
if (IS_SOLARIS_PT_INTERP (segment, section))
{
/* Mininal change so that the normal section to segment
- assigment code will work. */
+ assignment code will work. */
segment->p_vaddr = section->vma;
break;
}
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;
/* 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;
if (!elf_map_symbols (abfd))
return FALSE;
outbound_shndx += sizeof (Elf_External_Sym_Shndx);
}
+ name_local_sections
+ = (bed->elf_backend_name_local_section_symbols
+ && bed->elf_backend_name_local_section_symbols (abfd));
+
syms = bfd_get_outsymbols (abfd);
for (idx = 0; idx < symcount; idx++)
{
flagword flags = syms[idx]->flags;
int type;
- if ((flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM)
+ if (!name_local_sections
+ && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM)
{
/* Local section symbols have no name. */
sym.st_name = 0;
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;
+
+ 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;
+
+ 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)
+ 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);
+
+ ivernaux->vna_nodename =
+ bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
+ ivernaux->vna_name);
+ if (ivernaux->vna_nodename == NULL)
+ goto error_return;
+
+ if (j + 1 < iverneed->vn_cnt)
+ ivernaux->vna_nextptr = ivernaux + 1;
+ else
+ ivernaux->vna_nextptr = NULL;
+
+ 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;
+
+ everneed = ((Elf_External_Verneed *)
+ ((bfd_byte *) everneed + iverneed->vn_next));
+ }
+
+ free (contents);
+ contents = NULL;
+ }
if (elf_dynverdef (abfd) != 0)
{
((bfd_byte *) everdef + iverdefmem.vd_next));
}
+ if (default_imported_symver)
+ {
+ if (freeidx > maxidx)
+ maxidx = ++freeidx;
+ else
+ freeidx = ++maxidx;
+ }
amt = (bfd_size_type) maxidx * sizeof (Elf_Internal_Verdef);
elf_tdata (abfd)->verdef = bfd_zalloc (abfd, amt);
if (elf_tdata (abfd)->verdef == 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)
+ amt = (bfd_size_type) freeidx * sizeof (Elf_Internal_Verdef);
+ elf_tdata (abfd)->verdef = bfd_zalloc (abfd, amt);
+ 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;
+ iverdef->vd_nextdef = NULL;
+ amt = (bfd_size_type) sizeof (Elf_Internal_Verdaux);
+ iverdef->vd_auxptr = bfd_alloc (abfd, amt);
- 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)
bfd_boolean
_bfd_elf_set_section_contents (bfd *abfd,
sec_ptr section,
- void *location,
+ const void *location,
file_ptr offset,
bfd_size_type count)
{
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_command
= _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31);
- return TRUE;
+ return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo",
+ note);
}
static bfd_boolean
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;
}
}
bfd_vma
_bfd_elf_rela_local_sym (bfd *abfd,
Elf_Internal_Sym *sym,
- asection *sec,
+ asection **psec,
Elf_Internal_Rela *rel)
{
+ asection *sec = *psec;
bfd_vma relocation;
relocation = (sec->output_section->vma
&& ELF_ST_TYPE (sym->st_info) == STT_SECTION
&& sec->sec_info_type == ELF_INFO_TYPE_MERGE)
{
- asection *msec;
-
- msec = sec;
rel->r_addend =
- _bfd_merged_section_offset (abfd, &msec,
+ _bfd_merged_section_offset (abfd, psec,
elf_section_data (sec)->sec_info,
- sym->st_value + rel->r_addend,
- 0)
- - relocation;
- rel->r_addend += msec->output_section->vma + msec->output_offset;
+ 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 relocation;
}
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;
+}