#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
#include "libbfd.h"
#define ARCH_SIZE 0
#include "elf-bfd.h"
#include "safe-ctype.h"
#include "libiberty.h"
bfd_boolean
_bfd_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
{
flagword flags;
asection *s;
struct elf_link_hash_entry *h;
struct bfd_link_hash_entry *bh;
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
int ptralign;
s = bfd_get_section_by_name (abfd, ".got");
if (s != NULL && (s->flags & SEC_LINKER_CREATED) != 0)
return TRUE;
switch (bed->s->arch_size)
{
case 32:
ptralign = 2;
break;
case 64:
ptralign = 3;
break;
default:
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
flags = bed->dynamic_sec_flags;
s = bfd_make_section_with_flags (abfd, ".got", flags);
if (s == NULL
|| !bfd_set_section_alignment (abfd, s, ptralign))
return FALSE;
if (bed->want_got_plt)
{
s = bfd_make_section_with_flags (abfd, ".got.plt", flags);
if (s == NULL
|| !bfd_set_section_alignment (abfd, s, ptralign))
return FALSE;
}
if (bed->want_got_sym)
{
bh = NULL;
if (!(_bfd_generic_link_add_one_symbol
(info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s,
0, NULL, FALSE, bed->collect, &bh)))
return FALSE;
h = (struct elf_link_hash_entry *) bh;
h->def_regular = 1;
h->type = STT_OBJECT;
h->other = STV_HIDDEN;
if (! info->executable
&& ! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
elf_hash_table (info)->hgot = h;
}
s->size += bed->got_header_size;
return TRUE;
}
static bfd_boolean
_bfd_elf_link_create_dynstrtab (bfd *abfd, struct bfd_link_info *info)
{
struct elf_link_hash_table *hash_table;
hash_table = elf_hash_table (info);
if (hash_table->dynobj == NULL)
hash_table->dynobj = abfd;
if (hash_table->dynstr == NULL)
{
hash_table->dynstr = _bfd_elf_strtab_init ();
if (hash_table->dynstr == NULL)
return FALSE;
}
return TRUE;
}
bfd_boolean
_bfd_elf_link_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
{
flagword flags;
register asection *s;
struct elf_link_hash_entry *h;
struct bfd_link_hash_entry *bh;
const struct elf_backend_data *bed;
if (! is_elf_hash_table (info->hash))
return FALSE;
if (elf_hash_table (info)->dynamic_sections_created)
return TRUE;
if (!_bfd_elf_link_create_dynstrtab (abfd, info))
return FALSE;
abfd = elf_hash_table (info)->dynobj;
bed = get_elf_backend_data (abfd);
flags = bed->dynamic_sec_flags;
if (info->executable)
{
s = bfd_make_section_with_flags (abfd, ".interp",
flags | SEC_READONLY);
if (s == NULL)
return FALSE;
}
if (! info->traditional_format)
{
s = bfd_make_section_with_flags (abfd, ".eh_frame_hdr",
flags | SEC_READONLY);
if (s == NULL
|| ! bfd_set_section_alignment (abfd, s, 2))
return FALSE;
elf_hash_table (info)->eh_info.hdr_sec = s;
}
s = bfd_make_section_with_flags (abfd, ".gnu.version_d",
flags | SEC_READONLY);
if (s == NULL
|| ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
return FALSE;
s = bfd_make_section_with_flags (abfd, ".gnu.version",
flags | SEC_READONLY);
if (s == NULL
|| ! bfd_set_section_alignment (abfd, s, 1))
return FALSE;
s = bfd_make_section_with_flags (abfd, ".gnu.version_r",
flags | SEC_READONLY);
if (s == NULL
|| ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
return FALSE;
s = bfd_make_section_with_flags (abfd, ".dynsym",
flags | SEC_READONLY);
if (s == NULL
|| ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
return FALSE;
s = bfd_make_section_with_flags (abfd, ".dynstr",
flags | SEC_READONLY);
if (s == NULL)
return FALSE;
s = bfd_make_section_with_flags (abfd, ".dynamic", flags);
if (s == NULL
|| ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
return FALSE;
h = elf_link_hash_lookup (elf_hash_table (info), "_DYNAMIC",
FALSE, FALSE, FALSE);
if (h != NULL)
{
h->root.type = bfd_link_hash_new;
}
bh = &h->root;
if (! (_bfd_generic_link_add_one_symbol
(info, abfd, "_DYNAMIC", BSF_GLOBAL, s, 0, NULL, FALSE,
get_elf_backend_data (abfd)->collect, &bh)))
return FALSE;
h = (struct elf_link_hash_entry *) bh;
h->def_regular = 1;
h->type = STT_OBJECT;
if (! info->executable
&& ! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
s = bfd_make_section_with_flags (abfd, ".hash",
flags | SEC_READONLY);
if (s == NULL
|| ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
return FALSE;
elf_section_data (s)->this_hdr.sh_entsize = bed->s->sizeof_hash_entry;
if (! (*bed->elf_backend_create_dynamic_sections) (abfd, info))
return FALSE;
elf_hash_table (info)->dynamic_sections_created = TRUE;
return TRUE;
}
bfd_boolean
_bfd_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
{
flagword flags, pltflags;
asection *s;
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
flags = bed->dynamic_sec_flags;
pltflags = flags;
if (bed->plt_not_loaded)
pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS);
else
pltflags |= SEC_ALLOC | SEC_CODE | SEC_LOAD;
if (bed->plt_readonly)
pltflags |= SEC_READONLY;
s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
if (s == NULL
|| ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
return FALSE;
if (bed->want_plt_sym)
{
struct elf_link_hash_entry *h;
struct bfd_link_hash_entry *bh = NULL;
if (! (_bfd_generic_link_add_one_symbol
(info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, 0, NULL,
FALSE, get_elf_backend_data (abfd)->collect, &bh)))
return FALSE;
h = (struct elf_link_hash_entry *) bh;
h->def_regular = 1;
h->type = STT_OBJECT;
if (! info->executable
&& ! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
}
s = bfd_make_section_with_flags (abfd,
(bed->default_use_rela_p
? ".rela.plt" : ".rel.plt"),
flags | SEC_READONLY);
if (s == NULL
|| ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
return FALSE;
if (! _bfd_elf_create_got_section (abfd, info))
return FALSE;
if (bed->want_dynbss)
{
s = bfd_make_section_with_flags (abfd, ".dynbss",
(SEC_ALLOC
| SEC_LINKER_CREATED));
if (s == NULL)
return FALSE;
if (! info->shared)
{
s = bfd_make_section_with_flags (abfd,
(bed->default_use_rela_p
? ".rela.bss" : ".rel.bss"),
flags | SEC_READONLY);
if (s == NULL
|| ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
return FALSE;
}
}
return TRUE;
}
bfd_boolean
bfd_elf_link_record_dynamic_symbol (struct bfd_link_info *info,
struct elf_link_hash_entry *h)
{
if (h->dynindx == -1)
{
struct elf_strtab_hash *dynstr;
char *p;
const char *name;
bfd_size_type indx;
switch (ELF_ST_VISIBILITY (h->other))
{
case STV_INTERNAL:
case STV_HIDDEN:
if (h->root.type != bfd_link_hash_undefined
&& h->root.type != bfd_link_hash_undefweak)
{
h->forced_local = 1;
if (!elf_hash_table (info)->is_relocatable_executable)
return TRUE;
}
default:
break;
}
h->dynindx = elf_hash_table (info)->dynsymcount;
++elf_hash_table (info)->dynsymcount;
dynstr = elf_hash_table (info)->dynstr;
if (dynstr == NULL)
{
elf_hash_table (info)->dynstr = dynstr = _bfd_elf_strtab_init ();
if (dynstr == NULL)
return FALSE;
}
name = h->root.root.string;
p = strchr (name, ELF_VER_CHR);
if (p != NULL)
*p = 0;
indx = _bfd_elf_strtab_add (dynstr, name, p != NULL);
if (p != NULL)
*p = ELF_VER_CHR;
if (indx == (bfd_size_type) -1)
return FALSE;
h->dynstr_index = indx;
}
return TRUE;
}
bfd_boolean
bfd_elf_record_link_assignment (struct bfd_link_info *info,
const char *name,
bfd_boolean provide)
{
struct elf_link_hash_entry *h;
struct elf_link_hash_table *htab;
if (!is_elf_hash_table (info->hash))
return TRUE;
htab = elf_hash_table (info);
h = elf_link_hash_lookup (htab, name, !provide, TRUE, FALSE);
if (h == NULL)
return provide;
if (h->root.type == bfd_link_hash_undefweak
|| h->root.type == bfd_link_hash_undefined)
{
h->root.type = bfd_link_hash_new;
if (h->root.u.undef.next != NULL || htab->root.undefs_tail == &h->root)
bfd_link_repair_undef_list (&htab->root);
}
if (h->root.type == bfd_link_hash_new)
h->non_elf = 0;
if (provide
&& h->def_dynamic
&& !h->def_regular)
h->root.type = bfd_link_hash_undefined;
if (!provide
&& h->def_dynamic
&& !h->def_regular)
h->verinfo.verdef = NULL;
h->def_regular = 1;
if (!info->relocatable
&& h->dynindx != -1
&& (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
|| ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
h->forced_local = 1;
if ((h->def_dynamic
|| h->ref_dynamic
|| info->shared
|| (info->executable && elf_hash_table (info)->is_relocatable_executable))
&& h->dynindx == -1)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
if (h->u.weakdef != NULL
&& h->u.weakdef->dynindx == -1)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h->u.weakdef))
return FALSE;
}
}
return TRUE;
}
int
bfd_elf_link_record_local_dynamic_symbol (struct bfd_link_info *info,
bfd *input_bfd,
long input_indx)
{
bfd_size_type amt;
struct elf_link_local_dynamic_entry *entry;
struct elf_link_hash_table *eht;
struct elf_strtab_hash *dynstr;
unsigned long dynstr_index;
char *name;
Elf_External_Sym_Shndx eshndx;
char esym[sizeof (Elf64_External_Sym)];
if (! is_elf_hash_table (info->hash))
return 0;
for (entry = elf_hash_table (info)->dynlocal; entry ; entry = entry->next)
if (entry->input_bfd == input_bfd && entry->input_indx == input_indx)
return 1;
amt = sizeof (*entry);
entry = bfd_alloc (input_bfd, amt);
if (entry == NULL)
return 0;
if (!bfd_elf_get_elf_syms (input_bfd, &elf_tdata (input_bfd)->symtab_hdr,
1, input_indx, &entry->isym, esym, &eshndx))
{
bfd_release (input_bfd, entry);
return 0;
}
if (entry->isym.st_shndx != SHN_UNDEF
&& (entry->isym.st_shndx < SHN_LORESERVE
|| entry->isym.st_shndx > SHN_HIRESERVE))
{
asection *s;
s = bfd_section_from_elf_index (input_bfd, entry->isym.st_shndx);
if (s == NULL || bfd_is_abs_section (s->output_section))
{
bfd_release (input_bfd, entry);
return 2;
}
}
name = (bfd_elf_string_from_elf_section
(input_bfd, elf_tdata (input_bfd)->symtab_hdr.sh_link,
entry->isym.st_name));
dynstr = elf_hash_table (info)->dynstr;
if (dynstr == NULL)
{
elf_hash_table (info)->dynstr = dynstr = _bfd_elf_strtab_init ();
if (dynstr == NULL)
return 0;
}
dynstr_index = _bfd_elf_strtab_add (dynstr, name, FALSE);
if (dynstr_index == (unsigned long) -1)
return 0;
entry->isym.st_name = dynstr_index;
eht = elf_hash_table (info);
entry->next = eht->dynlocal;
eht->dynlocal = entry;
entry->input_bfd = input_bfd;
entry->input_indx = input_indx;
eht->dynsymcount++;
entry->isym.st_info
= ELF_ST_INFO (STB_LOCAL, ELF_ST_TYPE (entry->isym.st_info));
return 1;
}
long
_bfd_elf_link_lookup_local_dynindx (struct bfd_link_info *info,
bfd *input_bfd,
long input_indx)
{
struct elf_link_local_dynamic_entry *e;
for (e = elf_hash_table (info)->dynlocal; e ; e = e->next)
if (e->input_bfd == input_bfd && e->input_indx == input_indx)
return e->dynindx;
return -1;
}
static bfd_boolean
elf_link_renumber_hash_table_dynsyms (struct elf_link_hash_entry *h,
void *data)
{
size_t *count = data;
if (h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if (h->forced_local)
return TRUE;
if (h->dynindx != -1)
h->dynindx = ++(*count);
return TRUE;
}
static bfd_boolean
elf_link_renumber_local_hash_table_dynsyms (struct elf_link_hash_entry *h,
void *data)
{
size_t *count = data;
if (h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if (!h->forced_local)
return TRUE;
if (h->dynindx != -1)
h->dynindx = ++(*count);
return TRUE;
}
bfd_boolean
_bfd_elf_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED,
struct bfd_link_info *info,
asection *p)
{
switch (elf_section_data (p)->this_hdr.sh_type)
{
case SHT_PROGBITS:
case SHT_NOBITS:
case SHT_NULL:
if (strcmp (p->name, ".got") == 0
|| strcmp (p->name, ".got.plt") == 0
|| strcmp (p->name, ".plt") == 0)
{
asection *ip;
bfd *dynobj = elf_hash_table (info)->dynobj;
if (dynobj != NULL
&& (ip = bfd_get_section_by_name (dynobj, p->name)) != NULL
&& (ip->flags & SEC_LINKER_CREATED)
&& ip->output_section == p)
return TRUE;
}
return FALSE;
default:
return TRUE;
}
}
static unsigned long
_bfd_elf_link_renumber_dynsyms (bfd *output_bfd,
struct bfd_link_info *info,
unsigned long *section_sym_count)
{
unsigned long dynsymcount = 0;
if (info->shared || elf_hash_table (info)->is_relocatable_executable)
{
const struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
asection *p;
for (p = output_bfd->sections; p ; p = p->next)
if ((p->flags & SEC_EXCLUDE) == 0
&& (p->flags & SEC_ALLOC) != 0
&& !(*bed->elf_backend_omit_section_dynsym) (output_bfd, info, p))
elf_section_data (p)->dynindx = ++dynsymcount;
}
*section_sym_count = dynsymcount;
elf_link_hash_traverse (elf_hash_table (info),
elf_link_renumber_local_hash_table_dynsyms,
&dynsymcount);
if (elf_hash_table (info)->dynlocal)
{
struct elf_link_local_dynamic_entry *p;
for (p = elf_hash_table (info)->dynlocal; p ; p = p->next)
p->dynindx = ++dynsymcount;
}
elf_link_hash_traverse (elf_hash_table (info),
elf_link_renumber_hash_table_dynsyms,
&dynsymcount);
if (dynsymcount != 0)
++dynsymcount;
return elf_hash_table (info)->dynsymcount = dynsymcount;
}
bfd_boolean
_bfd_elf_merge_symbol (bfd *abfd,
struct bfd_link_info *info,
const char *name,
Elf_Internal_Sym *sym,
asection **psec,
bfd_vma *pvalue,
unsigned int *pold_alignment,
struct elf_link_hash_entry **sym_hash,
bfd_boolean *skip,
bfd_boolean *override,
bfd_boolean *type_change_ok,
bfd_boolean *size_change_ok)
{
asection *sec, *oldsec;
struct elf_link_hash_entry *h;
struct elf_link_hash_entry *flip;
int bind;
bfd *oldbfd;
bfd_boolean newdyn, olddyn, olddef, newdef, newdyncommon, olddyncommon;
bfd_boolean newweak, oldweak;
const struct elf_backend_data *bed;
*skip = FALSE;
*override = FALSE;
sec = *psec;
bind = ELF_ST_BIND (sym->st_info);
if (! bfd_is_und_section (sec))
h = elf_link_hash_lookup (elf_hash_table (info), name, TRUE, FALSE, FALSE);
else
h = ((struct elf_link_hash_entry *)
bfd_wrapped_link_hash_lookup (abfd, info, name, TRUE, FALSE, FALSE));
if (h == NULL)
return FALSE;
*sym_hash = h;
if (info->hash->creator != abfd->xvec)
return TRUE;
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if (h->root.type == bfd_link_hash_new)
{
h->non_elf = 0;
return TRUE;
}
switch (h->root.type)
{
default:
oldbfd = NULL;
oldsec = NULL;
break;
case bfd_link_hash_undefined:
case bfd_link_hash_undefweak:
oldbfd = h->root.u.undef.abfd;
oldsec = NULL;
break;
case bfd_link_hash_defined:
case bfd_link_hash_defweak:
oldbfd = h->root.u.def.section->owner;
oldsec = h->root.u.def.section;
break;
case bfd_link_hash_common:
oldbfd = h->root.u.c.p->section->owner;
oldsec = h->root.u.c.p->section;
break;
}
if (abfd == oldbfd
&& ((abfd->flags & DYNAMIC) == 0
|| !h->def_regular))
return TRUE;
if ((abfd->flags & DYNAMIC) != 0)
newdyn = TRUE;
else
newdyn = FALSE;
if (oldbfd != NULL)
olddyn = (oldbfd->flags & DYNAMIC) != 0;
else
{
asection *hsec;
switch (h->root.type)
{
default:
hsec = NULL;
break;
case bfd_link_hash_defined:
case bfd_link_hash_defweak:
hsec = h->root.u.def.section;
break;
case bfd_link_hash_common:
hsec = h->root.u.c.p->section;
break;
}
if (hsec == NULL)
olddyn = FALSE;
else
olddyn = (hsec->symbol->flags & BSF_DYNAMIC) != 0;
}
if (bfd_is_und_section (sec) || bfd_is_com_section (sec))
newdef = FALSE;
else
newdef = TRUE;
if (h->root.type == bfd_link_hash_undefined
|| h->root.type == bfd_link_hash_undefweak
|| h->root.type == bfd_link_hash_common)
olddef = FALSE;
else
olddef = TRUE;
if ((ELF_ST_TYPE (sym->st_info) == STT_TLS || h->type == STT_TLS)
&& ELF_ST_TYPE (sym->st_info) != h->type)
{
bfd *ntbfd, *tbfd;
bfd_boolean ntdef, tdef;
asection *ntsec, *tsec;
if (h->type == STT_TLS)
{
ntbfd = abfd;
ntsec = sec;
ntdef = newdef;
tbfd = oldbfd;
tsec = oldsec;
tdef = olddef;
}
else
{
ntbfd = oldbfd;
ntsec = oldsec;
ntdef = olddef;
tbfd = abfd;
tsec = sec;
tdef = newdef;
}
if (tdef && ntdef)
(*_bfd_error_handler)
(_("%s: TLS definition in %B section %A mismatches non-TLS definition in %B section %A"),
tbfd, tsec, ntbfd, ntsec, h->root.root.string);
else if (!tdef && !ntdef)
(*_bfd_error_handler)
(_("%s: TLS reference in %B mismatches non-TLS reference in %B"),
tbfd, ntbfd, h->root.root.string);
else if (tdef)
(*_bfd_error_handler)
(_("%s: TLS definition in %B section %A mismatches non-TLS reference in %B"),
tbfd, tsec, ntbfd, h->root.root.string);
else
(*_bfd_error_handler)
(_("%s: TLS reference in %B mismatches non-TLS definition in %B section %A"),
tbfd, ntbfd, ntsec, h->root.root.string);
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
if (newdyn && !h->dynamic_def)
{
if (!bfd_is_und_section (sec))
h->dynamic_def = 1;
else
{
if (!h->ref_dynamic)
{
if (bind == STB_WEAK)
h->dynamic_weak = 1;
}
else if (bind != STB_WEAK)
h->dynamic_weak = 0;
}
}
if (newdyn
&& ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
&& !bfd_is_und_section (sec))
{
*skip = TRUE;
h->ref_dynamic = 1;
if (ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
return bfd_elf_link_record_dynamic_symbol (info, h);
else
return TRUE;
}
else if (!newdyn
&& ELF_ST_VISIBILITY (sym->st_other) != STV_DEFAULT
&& h->def_dynamic)
{
if ((*sym_hash)->root.type == bfd_link_hash_indirect)
h = *sym_hash;
if ((h->root.u.undef.next || info->hash->undefs_tail == &h->root)
&& bfd_is_und_section (sec))
{
h->root.type = bfd_link_hash_undefined;
h->root.u.undef.abfd = abfd;
}
else
{
h->root.type = bfd_link_hash_new;
h->root.u.undef.abfd = NULL;
}
if (h->def_dynamic)
{
h->def_dynamic = 0;
h->ref_dynamic = 1;
h->dynamic_def = 1;
}
h->size = 0;
h->type = 0;
return TRUE;
}
newweak = bind == STB_WEAK;
oldweak = (h->root.type == bfd_link_hash_defweak
|| h->root.type == bfd_link_hash_undefweak);
if (newdef && !newdyn && olddyn)
newweak = FALSE;
if (olddef && newdyn)
oldweak = FALSE;
if (oldweak
|| newweak
|| (newdef
&& h->root.type == bfd_link_hash_undefined))
*type_change_ok = TRUE;
if (*type_change_ok
|| h->root.type == bfd_link_hash_undefined)
*size_change_ok = TRUE;
if (newdyn
&& newdef
&& !newweak
&& (sec->flags & SEC_ALLOC) != 0
&& (sec->flags & SEC_LOAD) == 0
&& sym->st_size > 0
&& ELF_ST_TYPE (sym->st_info) != STT_FUNC)
newdyncommon = TRUE;
else
newdyncommon = FALSE;
if (olddyn
&& olddef
&& h->root.type == bfd_link_hash_defined
&& h->def_dynamic
&& (h->root.u.def.section->flags & SEC_ALLOC) != 0
&& (h->root.u.def.section->flags & SEC_LOAD) == 0
&& h->size > 0
&& h->type != STT_FUNC)
olddyncommon = TRUE;
else
olddyncommon = FALSE;
bed = get_elf_backend_data (abfd);
if (bed->merge_symbol
&& !bed->merge_symbol (info, sym_hash, h, sym, psec, pvalue,
pold_alignment, skip, override,
type_change_ok, size_change_ok,
&newdyn, &newdef, &newdyncommon, &newweak,
abfd, &sec,
&olddyn, &olddef, &olddyncommon, &oldweak,
oldbfd, &oldsec))
return FALSE;
if (olddyncommon
&& newdyncommon
&& sym->st_size != h->size)
{
if (! ((*info->callbacks->multiple_common)
(info, h->root.root.string, oldbfd, bfd_link_hash_common,
h->size, abfd, bfd_link_hash_common, sym->st_size)))
return FALSE;
if (sym->st_size > h->size)
h->size = sym->st_size;
*size_change_ok = TRUE;
}
if (newdyn
&& newdef
&& (olddef
|| (h->root.type == bfd_link_hash_common
&& (newweak
|| ELF_ST_TYPE (sym->st_info) == STT_FUNC))))
{
*override = TRUE;
newdef = FALSE;
newdyncommon = FALSE;
*psec = sec = bfd_und_section_ptr;
*size_change_ok = TRUE;
if (h->root.type == bfd_link_hash_common)
*type_change_ok = TRUE;
}
if (newdyncommon
&& h->root.type == bfd_link_hash_common)
{
*override = TRUE;
newdef = FALSE;
newdyncommon = FALSE;
*pvalue = sym->st_size;
*psec = sec = bed->common_section (oldsec);
*size_change_ok = TRUE;
}
if (newdef && olddef && newweak)
*skip = TRUE;
flip = NULL;
if (!newdyn
&& (newdef
|| (bfd_is_com_section (sec)
&& (oldweak
|| h->type == STT_FUNC)))
&& olddyn
&& olddef
&& h->def_dynamic)
{
h->root.type = bfd_link_hash_undefined;
h->root.u.undef.abfd = h->root.u.def.section->owner;
*size_change_ok = TRUE;
olddef = FALSE;
olddyncommon = FALSE;
if (bfd_is_com_section (sec))
*type_change_ok = TRUE;
if ((*sym_hash)->root.type == bfd_link_hash_indirect)
flip = *sym_hash;
else
h->verinfo.vertree = NULL;
}
if (! newdyn
&& bfd_is_com_section (sec)
&& olddyncommon)
{
if (! ((*info->callbacks->multiple_common)
(info, h->root.root.string, oldbfd, bfd_link_hash_common,
h->size, abfd, bfd_link_hash_common, sym->st_size)))
return FALSE;
if (h->size > *pvalue)
*pvalue = h->size;
BFD_ASSERT (pold_alignment);
*pold_alignment = h->root.u.def.section->alignment_power;
olddef = FALSE;
olddyncommon = FALSE;
h->root.type = bfd_link_hash_undefined;
h->root.u.undef.abfd = h->root.u.def.section->owner;
*size_change_ok = TRUE;
*type_change_ok = TRUE;
if ((*sym_hash)->root.type == bfd_link_hash_indirect)
flip = *sym_hash;
else
h->verinfo.vertree = NULL;
}
if (flip != NULL)
{
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
flip->root.type = h->root.type;
h->root.type = bfd_link_hash_indirect;
h->root.u.i.link = (struct bfd_link_hash_entry *) flip;
(*bed->elf_backend_copy_indirect_symbol) (bed, flip, h);
flip->root.u.undef.abfd = h->root.u.undef.abfd;
if (h->def_dynamic)
{
h->def_dynamic = 0;
flip->ref_dynamic = 1;
}
}
return TRUE;
}
bfd_boolean
_bfd_elf_add_default_symbol (bfd *abfd,
struct bfd_link_info *info,
struct elf_link_hash_entry *h,
const char *name,
Elf_Internal_Sym *sym,
asection **psec,
bfd_vma *value,
bfd_boolean *dynsym,
bfd_boolean override)
{
bfd_boolean type_change_ok;
bfd_boolean size_change_ok;
bfd_boolean skip;
char *shortname;
struct elf_link_hash_entry *hi;
struct bfd_link_hash_entry *bh;
const struct elf_backend_data *bed;
bfd_boolean collect;
bfd_boolean dynamic;
char *p;
size_t len, shortlen;
asection *sec;
p = strchr (name, ELF_VER_CHR);
if (p == NULL || p[1] != ELF_VER_CHR)
return TRUE;
if (override)
{
hi = elf_link_hash_lookup (elf_hash_table (info), name, TRUE,
FALSE, FALSE);
BFD_ASSERT (hi != NULL);
if (hi == h)
return TRUE;
while (hi->root.type == bfd_link_hash_indirect
|| hi->root.type == bfd_link_hash_warning)
{
hi = (struct elf_link_hash_entry *) hi->root.u.i.link;
if (hi == h)
return TRUE;
}
}
bed = get_elf_backend_data (abfd);
collect = bed->collect;
dynamic = (abfd->flags & DYNAMIC) != 0;
shortlen = p - name;
shortname = bfd_hash_allocate (&info->hash->table, shortlen + 1);
if (shortname == NULL)
return FALSE;
memcpy (shortname, name, shortlen);
shortname[shortlen] = '\0';
type_change_ok = FALSE;
size_change_ok = FALSE;
sec = *psec;
if (!_bfd_elf_merge_symbol (abfd, info, shortname, sym, &sec, value,
NULL, &hi, &skip, &override,
&type_change_ok, &size_change_ok))
return FALSE;
if (skip)
goto nondefault;
if (! override)
{
bh = &hi->root;
if (! (_bfd_generic_link_add_one_symbol
(info, abfd, shortname, BSF_INDIRECT, bfd_ind_section_ptr,
0, name, FALSE, collect, &bh)))
return FALSE;
hi = (struct elf_link_hash_entry *) bh;
}
else
{
while (hi->root.type == bfd_link_hash_indirect
|| hi->root.type == bfd_link_hash_warning)
hi = (struct elf_link_hash_entry *) hi->root.u.i.link;
h->root.type = bfd_link_hash_indirect;
h->root.u.i.link = (struct bfd_link_hash_entry *) hi;
if (h->def_dynamic)
{
h->def_dynamic = 0;
hi->ref_dynamic = 1;
if (hi->ref_regular
|| hi->def_regular)
{
if (! bfd_elf_link_record_dynamic_symbol (info, hi))
return FALSE;
}
}
hi = h;
}
if (hi->root.type == bfd_link_hash_indirect)
{
struct elf_link_hash_entry *ht;
ht = (struct elf_link_hash_entry *) hi->root.u.i.link;
(*bed->elf_backend_copy_indirect_symbol) (bed, ht, hi);
if (! *dynsym)
{
if (! dynamic)
{
if (info->shared
|| hi->ref_dynamic)
*dynsym = TRUE;
}
else
{
if (hi->ref_regular)
*dynsym = TRUE;
}
}
}
nondefault:
len = strlen (name);
shortname = bfd_hash_allocate (&info->hash->table, len);
if (shortname == NULL)
return FALSE;
memcpy (shortname, name, shortlen);
memcpy (shortname + shortlen, p + 1, len - shortlen);
type_change_ok = FALSE;
size_change_ok = FALSE;
sec = *psec;
if (!_bfd_elf_merge_symbol (abfd, info, shortname, sym, &sec, value,
NULL, &hi, &skip, &override,
&type_change_ok, &size_change_ok))
return FALSE;
if (skip)
return TRUE;
if (override)
{
if (hi->root.type != bfd_link_hash_defined
&& hi->root.type != bfd_link_hash_defweak)
(*_bfd_error_handler)
(_("%B: unexpected redefinition of indirect versioned symbol `%s'"),
abfd, shortname);
}
else
{
bh = &hi->root;
if (! (_bfd_generic_link_add_one_symbol
(info, abfd, shortname, BSF_INDIRECT,
bfd_ind_section_ptr, 0, name, FALSE, collect, &bh)))
return FALSE;
hi = (struct elf_link_hash_entry *) bh;
if (hi->root.type == bfd_link_hash_indirect)
{
(*bed->elf_backend_copy_indirect_symbol) (bed, h, hi);
if (! *dynsym)
{
if (! dynamic)
{
if (info->shared
|| hi->ref_dynamic)
*dynsym = TRUE;
}
else
{
if (hi->ref_regular)
*dynsym = TRUE;
}
}
}
}
return TRUE;
}
bfd_boolean
_bfd_elf_export_symbol (struct elf_link_hash_entry *h, void *data)
{
struct elf_info_failed *eif = data;
if (h->root.type == bfd_link_hash_indirect)
return TRUE;
if (h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if (h->dynindx == -1
&& (h->def_regular
|| h->ref_regular))
{
struct bfd_elf_version_tree *t;
struct bfd_elf_version_expr *d;
for (t = eif->verdefs; t != NULL; t = t->next)
{
if (t->globals.list != NULL)
{
d = (*t->match) (&t->globals, NULL, h->root.root.string);
if (d != NULL)
goto doit;
}
if (t->locals.list != NULL)
{
d = (*t->match) (&t->locals, NULL, h->root.root.string);
if (d != NULL)
return TRUE;
}
}
if (!eif->verdefs)
{
doit:
if (! bfd_elf_link_record_dynamic_symbol (eif->info, h))
{
eif->failed = TRUE;
return FALSE;
}
}
}
return TRUE;
}
bfd_boolean
_bfd_elf_link_find_version_dependencies (struct elf_link_hash_entry *h,
void *data)
{
struct elf_find_verdep_info *rinfo = data;
Elf_Internal_Verneed *t;
Elf_Internal_Vernaux *a;
bfd_size_type amt;
if (h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if (!h->def_dynamic
|| h->def_regular
|| h->dynindx == -1
|| h->verinfo.verdef == NULL)
return TRUE;
for (t = elf_tdata (rinfo->output_bfd)->verref; t != NULL; t = t->vn_nextref)
{
if (t->vn_bfd != h->verinfo.verdef->vd_bfd)
continue;
for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
if (a->vna_nodename == h->verinfo.verdef->vd_nodename)
return TRUE;
break;
}
if (t == NULL)
{
amt = sizeof *t;
t = bfd_zalloc (rinfo->output_bfd, amt);
if (t == NULL)
{
rinfo->failed = TRUE;
return FALSE;
}
t->vn_bfd = h->verinfo.verdef->vd_bfd;
t->vn_nextref = elf_tdata (rinfo->output_bfd)->verref;
elf_tdata (rinfo->output_bfd)->verref = t;
}
amt = sizeof *a;
a = bfd_zalloc (rinfo->output_bfd, amt);
a->vna_nodename = h->verinfo.verdef->vd_nodename;
a->vna_flags = h->verinfo.verdef->vd_flags;
a->vna_nextptr = t->vn_auxptr;
h->verinfo.verdef->vd_exp_refno = rinfo->vers;
++rinfo->vers;
a->vna_other = h->verinfo.verdef->vd_exp_refno + 1;
t->vn_auxptr = a;
return TRUE;
}
bfd_boolean
_bfd_elf_link_assign_sym_version (struct elf_link_hash_entry *h, void *data)
{
struct elf_assign_sym_version_info *sinfo;
struct bfd_link_info *info;
const struct elf_backend_data *bed;
struct elf_info_failed eif;
char *p;
bfd_size_type amt;
sinfo = data;
info = sinfo->info;
if (h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
eif.failed = FALSE;
eif.info = info;
if (! _bfd_elf_fix_symbol_flags (h, &eif))
{
if (eif.failed)
sinfo->failed = TRUE;
return FALSE;
}
if (!h->def_regular)
return TRUE;
bed = get_elf_backend_data (sinfo->output_bfd);
p = strchr (h->root.root.string, ELF_VER_CHR);
if (p != NULL && h->verinfo.vertree == NULL)
{
struct bfd_elf_version_tree *t;
bfd_boolean hidden;
hidden = TRUE;
++p;
if (*p == ELF_VER_CHR)
{
hidden = FALSE;
++p;
}
if (*p == '\0')
{
if (hidden)
h->hidden = 1;
return TRUE;
}
for (t = sinfo->verdefs; t != NULL; t = t->next)
{
if (strcmp (t->name, p) == 0)
{
size_t len;
char *alc;
struct bfd_elf_version_expr *d;
len = p - h->root.root.string;
alc = bfd_malloc (len);
if (alc == NULL)
return FALSE;
memcpy (alc, h->root.root.string, len - 1);
alc[len - 1] = '\0';
if (alc[len - 2] == ELF_VER_CHR)
alc[len - 2] = '\0';
h->verinfo.vertree = t;
t->used = TRUE;
d = NULL;
if (t->globals.list != NULL)
d = (*t->match) (&t->globals, NULL, alc);
if (d == NULL && t->locals.list != NULL)
{
d = (*t->match) (&t->locals, NULL, alc);
if (d != NULL
&& h->dynindx != -1
&& ! info->export_dynamic)
(*bed->elf_backend_hide_symbol) (info, h, TRUE);
}
free (alc);
break;
}
}
if (t == NULL && info->executable)
{
struct bfd_elf_version_tree **pp;
int version_index;
if (h->dynindx == -1)
return TRUE;
amt = sizeof *t;
t = bfd_zalloc (sinfo->output_bfd, amt);
if (t == NULL)
{
sinfo->failed = TRUE;
return FALSE;
}
t->name = p;
t->name_indx = (unsigned int) -1;
t->used = TRUE;
version_index = 1;
if (sinfo->verdefs != NULL && sinfo->verdefs->vernum == 0)
version_index = 0;
for (pp = &sinfo->verdefs; *pp != NULL; pp = &(*pp)->next)
++version_index;
t->vernum = version_index;
*pp = t;
h->verinfo.vertree = t;
}
else if (t == NULL)
{
(*_bfd_error_handler)
(_("%B: undefined versioned symbol name %s"),
sinfo->output_bfd, h->root.root.string);
bfd_set_error (bfd_error_bad_value);
sinfo->failed = TRUE;
return FALSE;
}
if (hidden)
h->hidden = 1;
}
if (h->verinfo.vertree == NULL && sinfo->verdefs != NULL)
{
struct bfd_elf_version_tree *t;
struct bfd_elf_version_tree *local_ver;
struct bfd_elf_version_expr *d;
local_ver = NULL;
for (t = sinfo->verdefs; t != NULL; t = t->next)
{
if (t->globals.list != NULL)
{
bfd_boolean matched;
matched = FALSE;
d = NULL;
while ((d = (*t->match) (&t->globals, d,
h->root.root.string)) != NULL)
if (d->symver)
matched = TRUE;
else
{
h->verinfo.vertree = t;
local_ver = NULL;
d->script = 1;
break;
}
if (d != NULL)
break;
else if (matched)
(*bed->elf_backend_hide_symbol) (info, h, TRUE);
}
if (t->locals.list != NULL)
{
d = NULL;
while ((d = (*t->match) (&t->locals, d,
h->root.root.string)) != NULL)
{
local_ver = t;
if (d->pattern[0] != '*' || d->pattern[1] != '\0')
break;
}
if (d != NULL)
break;
}
}
if (local_ver != NULL)
{
h->verinfo.vertree = local_ver;
if (h->dynindx != -1
&& ! info->export_dynamic)
{
(*bed->elf_backend_hide_symbol) (info, h, TRUE);
}
}
}
return TRUE;
}
static bfd_boolean
elf_link_read_relocs_from_section (bfd *abfd,
asection *sec,
Elf_Internal_Shdr *shdr,
void *external_relocs,
Elf_Internal_Rela *internal_relocs)
{
const struct elf_backend_data *bed;
void (*swap_in) (bfd *, const bfd_byte *, Elf_Internal_Rela *);
const bfd_byte *erela;
const bfd_byte *erelaend;
Elf_Internal_Rela *irela;
Elf_Internal_Shdr *symtab_hdr;
size_t nsyms;
if (bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0)
return FALSE;
if (bfd_bread (external_relocs, shdr->sh_size, abfd) != shdr->sh_size)
return FALSE;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
nsyms = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
bed = get_elf_backend_data (abfd);
if (shdr->sh_entsize == bed->s->sizeof_rel)
swap_in = bed->s->swap_reloc_in;
else if (shdr->sh_entsize == bed->s->sizeof_rela)
swap_in = bed->s->swap_reloca_in;
else
{
bfd_set_error (bfd_error_wrong_format);
return FALSE;
}
erela = external_relocs;
erelaend = erela + shdr->sh_size;
irela = internal_relocs;
while (erela < erelaend)
{
bfd_vma r_symndx;
(*swap_in) (abfd, erela, irela);
r_symndx = ELF32_R_SYM (irela->r_info);
if (bed->s->arch_size == 64)
r_symndx >>= 24;
if ((size_t) r_symndx >= nsyms)
{
(*_bfd_error_handler)
(_("%B: bad reloc symbol index (0x%lx >= 0x%lx)"
" for offset 0x%lx in section `%A'"),
abfd, sec,
(unsigned long) r_symndx, (unsigned long) nsyms, irela->r_offset);
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
irela += bed->s->int_rels_per_ext_rel;
erela += shdr->sh_entsize;
}
return TRUE;
}
Elf_Internal_Rela *
_bfd_elf_link_read_relocs (bfd *abfd,
asection *o,
void *external_relocs,
Elf_Internal_Rela *internal_relocs,
bfd_boolean keep_memory)
{
Elf_Internal_Shdr *rel_hdr;
void *alloc1 = NULL;
Elf_Internal_Rela *alloc2 = NULL;
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
if (elf_section_data (o)->relocs != NULL)
return elf_section_data (o)->relocs;
if (o->reloc_count == 0)
return NULL;
rel_hdr = &elf_section_data (o)->rel_hdr;
if (internal_relocs == NULL)
{
bfd_size_type size;
size = o->reloc_count;
size *= bed->s->int_rels_per_ext_rel * sizeof (Elf_Internal_Rela);
if (keep_memory)
internal_relocs = bfd_alloc (abfd, size);
else
internal_relocs = alloc2 = bfd_malloc (size);
if (internal_relocs == NULL)
goto error_return;
}
if (external_relocs == NULL)
{
bfd_size_type size = rel_hdr->sh_size;
if (elf_section_data (o)->rel_hdr2)
size += elf_section_data (o)->rel_hdr2->sh_size;
alloc1 = bfd_malloc (size);
if (alloc1 == NULL)
goto error_return;
external_relocs = alloc1;
}
if (!elf_link_read_relocs_from_section (abfd, o, rel_hdr,
external_relocs,
internal_relocs))
goto error_return;
if (elf_section_data (o)->rel_hdr2
&& (!elf_link_read_relocs_from_section
(abfd, o,
elf_section_data (o)->rel_hdr2,
((bfd_byte *) external_relocs) + rel_hdr->sh_size,
internal_relocs + (NUM_SHDR_ENTRIES (rel_hdr)
* bed->s->int_rels_per_ext_rel))))
goto error_return;
if (keep_memory)
elf_section_data (o)->relocs = internal_relocs;
if (alloc1 != NULL)
free (alloc1);
return internal_relocs;
error_return:
if (alloc1 != NULL)
free (alloc1);
if (alloc2 != NULL)
free (alloc2);
return NULL;
}
bfd_boolean
_bfd_elf_link_size_reloc_section (bfd *abfd,
Elf_Internal_Shdr *rel_hdr,
asection *o)
{
bfd_size_type reloc_count;
bfd_size_type num_rel_hashes;
if (rel_hdr == &elf_section_data (o)->rel_hdr)
reloc_count = elf_section_data (o)->rel_count;
else
reloc_count = elf_section_data (o)->rel_count2;
num_rel_hashes = o->reloc_count;
if (num_rel_hashes < reloc_count)
num_rel_hashes = reloc_count;
rel_hdr->sh_size = rel_hdr->sh_entsize * reloc_count;
rel_hdr->contents = bfd_zalloc (abfd, rel_hdr->sh_size);
if (rel_hdr->contents == NULL && rel_hdr->sh_size != 0)
return FALSE;
if (elf_section_data (o)->rel_hashes == NULL
&& num_rel_hashes)
{
struct elf_link_hash_entry **p;
p = bfd_zmalloc (num_rel_hashes * sizeof (struct elf_link_hash_entry *));
if (p == NULL)
return FALSE;
elf_section_data (o)->rel_hashes = p;
}
return TRUE;
}
bfd_boolean
_bfd_elf_link_output_relocs (bfd *output_bfd,
asection *input_section,
Elf_Internal_Shdr *input_rel_hdr,
Elf_Internal_Rela *internal_relocs,
struct elf_link_hash_entry **rel_hash
ATTRIBUTE_UNUSED)
{
Elf_Internal_Rela *irela;
Elf_Internal_Rela *irelaend;
bfd_byte *erel;
Elf_Internal_Shdr *output_rel_hdr;
asection *output_section;
unsigned int *rel_countp = NULL;
const struct elf_backend_data *bed;
void (*swap_out) (bfd *, const Elf_Internal_Rela *, bfd_byte *);
output_section = input_section->output_section;
output_rel_hdr = NULL;
if (elf_section_data (output_section)->rel_hdr.sh_entsize
== input_rel_hdr->sh_entsize)
{
output_rel_hdr = &elf_section_data (output_section)->rel_hdr;
rel_countp = &elf_section_data (output_section)->rel_count;
}
else if (elf_section_data (output_section)->rel_hdr2
&& (elf_section_data (output_section)->rel_hdr2->sh_entsize
== input_rel_hdr->sh_entsize))
{
output_rel_hdr = elf_section_data (output_section)->rel_hdr2;
rel_countp = &elf_section_data (output_section)->rel_count2;
}
else
{
(*_bfd_error_handler)
(_("%B: relocation size mismatch in %B section %A"),
output_bfd, input_section->owner, input_section);
bfd_set_error (bfd_error_wrong_object_format);
return FALSE;
}
bed = get_elf_backend_data (output_bfd);
if (input_rel_hdr->sh_entsize == bed->s->sizeof_rel)
swap_out = bed->s->swap_reloc_out;
else if (input_rel_hdr->sh_entsize == bed->s->sizeof_rela)
swap_out = bed->s->swap_reloca_out;
else
abort ();
erel = output_rel_hdr->contents;
erel += *rel_countp * input_rel_hdr->sh_entsize;
irela = internal_relocs;
irelaend = irela + (NUM_SHDR_ENTRIES (input_rel_hdr)
* bed->s->int_rels_per_ext_rel);
while (irela < irelaend)
{
(*swap_out) (output_bfd, irela, erel);
irela += bed->s->int_rels_per_ext_rel;
erel += input_rel_hdr->sh_entsize;
}
*rel_countp += NUM_SHDR_ENTRIES (input_rel_hdr);
return TRUE;
}
bfd_boolean
_bfd_elf_fix_symbol_flags (struct elf_link_hash_entry *h,
struct elf_info_failed *eif)
{
if (h->non_elf)
{
while (h->root.type == bfd_link_hash_indirect)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if (h->root.type != bfd_link_hash_defined
&& h->root.type != bfd_link_hash_defweak)
{
h->ref_regular = 1;
h->ref_regular_nonweak = 1;
}
else
{
if (h->root.u.def.section->owner != NULL
&& (bfd_get_flavour (h->root.u.def.section->owner)
== bfd_target_elf_flavour))
{
h->ref_regular = 1;
h->ref_regular_nonweak = 1;
}
else
h->def_regular = 1;
}
if (h->dynindx == -1
&& (h->def_dynamic
|| h->ref_dynamic))
{
if (! bfd_elf_link_record_dynamic_symbol (eif->info, h))
{
eif->failed = TRUE;
return FALSE;
}
}
}
else
{
if ((h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
&& !h->def_regular
&& (h->root.u.def.section->owner != NULL
? (bfd_get_flavour (h->root.u.def.section->owner)
!= bfd_target_elf_flavour)
: (bfd_is_abs_section (h->root.u.def.section)
&& !h->def_dynamic)))
h->def_regular = 1;
}
if (h->root.type == bfd_link_hash_defined
&& !h->def_regular
&& h->ref_regular
&& !h->def_dynamic
&& (h->root.u.def.section->owner->flags & DYNAMIC) == 0)
h->def_regular = 1;
if (h->needs_plt
&& eif->info->shared
&& is_elf_hash_table (eif->info->hash)
&& (eif->info->symbolic
|| ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
&& h->def_regular)
{
const struct elf_backend_data *bed;
bfd_boolean force_local;
bed = get_elf_backend_data (elf_hash_table (eif->info)->dynobj);
force_local = (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
|| ELF_ST_VISIBILITY (h->other) == STV_HIDDEN);
(*bed->elf_backend_hide_symbol) (eif->info, h, force_local);
}
if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
&& h->root.type == bfd_link_hash_undefweak)
{
const struct elf_backend_data *bed;
bed = get_elf_backend_data (elf_hash_table (eif->info)->dynobj);
(*bed->elf_backend_hide_symbol) (eif->info, h, TRUE);
}
if (h->u.weakdef != NULL)
{
struct elf_link_hash_entry *weakdef;
weakdef = h->u.weakdef;
if (h->root.type == bfd_link_hash_indirect)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
BFD_ASSERT (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak);
BFD_ASSERT (weakdef->root.type == bfd_link_hash_defined
|| weakdef->root.type == bfd_link_hash_defweak);
BFD_ASSERT (weakdef->def_dynamic);
if (weakdef->def_regular)
h->u.weakdef = NULL;
else
{
const struct elf_backend_data *bed;
bed = get_elf_backend_data (elf_hash_table (eif->info)->dynobj);
(*bed->elf_backend_copy_indirect_symbol) (bed, weakdef, h);
}
}
return TRUE;
}
bfd_boolean
_bfd_elf_adjust_dynamic_symbol (struct elf_link_hash_entry *h, void *data)
{
struct elf_info_failed *eif = data;
bfd *dynobj;
const struct elf_backend_data *bed;
if (! is_elf_hash_table (eif->info->hash))
return FALSE;
if (h->root.type == bfd_link_hash_warning)
{
h->got = elf_hash_table (eif->info)->init_got_offset;
h->plt = elf_hash_table (eif->info)->init_plt_offset;
h = (struct elf_link_hash_entry *) h->root.u.i.link;
}
if (h->root.type == bfd_link_hash_indirect)
return TRUE;
if (! _bfd_elf_fix_symbol_flags (h, eif))
return FALSE;
if (!h->needs_plt
&& (h->def_regular
|| !h->def_dynamic
|| (!h->ref_regular
&& (h->u.weakdef == NULL || h->u.weakdef->dynindx == -1))))
{
h->plt = elf_hash_table (eif->info)->init_plt_offset;
return TRUE;
}
if (h->dynamic_adjusted)
return TRUE;
h->dynamic_adjusted = 1;
if (h->u.weakdef != NULL)
{
h->u.weakdef->ref_regular = 1;
if (! _bfd_elf_adjust_dynamic_symbol (h->u.weakdef, eif))
return FALSE;
}
if (h->size == 0
&& h->type == STT_NOTYPE
&& !h->needs_plt)
(*_bfd_error_handler)
(_("warning: type and size of dynamic symbol `%s' are not defined"),
h->root.root.string);
dynobj = elf_hash_table (eif->info)->dynobj;
bed = get_elf_backend_data (dynobj);
if (! (*bed->elf_backend_adjust_dynamic_symbol) (eif->info, h))
{
eif->failed = TRUE;
return FALSE;
}
return TRUE;
}
bfd_boolean
_bfd_elf_link_sec_merge_syms (struct elf_link_hash_entry *h, void *data)
{
asection *sec;
if (h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if ((h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
&& ((sec = h->root.u.def.section)->flags & SEC_MERGE)
&& sec->sec_info_type == ELF_INFO_TYPE_MERGE)
{
bfd *output_bfd = data;
h->root.u.def.value =
_bfd_merged_section_offset (output_bfd,
&h->root.u.def.section,
elf_section_data (sec)->sec_info,
h->root.u.def.value);
}
return TRUE;
}
bfd_boolean
_bfd_elf_dynamic_symbol_p (struct elf_link_hash_entry *h,
struct bfd_link_info *info,
bfd_boolean ignore_protected)
{
bfd_boolean binding_stays_local_p;
if (h == NULL)
return FALSE;
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if (h->dynindx == -1)
return FALSE;
if (h->forced_local)
return FALSE;
binding_stays_local_p = info->executable || info->symbolic;
switch (ELF_ST_VISIBILITY (h->other))
{
case STV_INTERNAL:
case STV_HIDDEN:
return FALSE;
case STV_PROTECTED:
if (!ignore_protected || h->type != STT_FUNC)
binding_stays_local_p = TRUE;
break;
default:
break;
}
if (!h->def_regular)
return TRUE;
return !binding_stays_local_p;
}
bfd_boolean
_bfd_elf_symbol_refs_local_p (struct elf_link_hash_entry *h,
struct bfd_link_info *info,
bfd_boolean local_protected)
{
if (h == NULL)
return TRUE;
if (ELF_COMMON_DEF_P (h))
;
else if (!h->def_regular)
return FALSE;
if (h->forced_local)
return TRUE;
if (h->dynindx == -1)
return TRUE;
if (info->executable || info->symbolic)
return TRUE;
if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
return FALSE;
if (ELF_ST_VISIBILITY (h->other) != STV_PROTECTED)
return TRUE;
if (h->type != STT_FUNC)
return TRUE;
return local_protected;
}
struct bfd_section *
_bfd_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
{
struct bfd_section *sec, *tls;
unsigned int align = 0;
for (sec = obfd->sections; sec != NULL; sec = sec->next)
if ((sec->flags & SEC_THREAD_LOCAL) != 0)
break;
tls = sec;
for (; sec != NULL && (sec->flags & SEC_THREAD_LOCAL) != 0; sec = sec->next)
if (sec->alignment_power > align)
align = sec->alignment_power;
elf_hash_table (info)->tls_sec = tls;
if (tls != NULL)
tls->alignment_power = align;
return tls;
}
static bfd_boolean
is_global_data_symbol_definition (bfd *abfd ATTRIBUTE_UNUSED,
Elf_Internal_Sym *sym)
{
const struct elf_backend_data *bed;
if (ELF_ST_BIND (sym->st_info) != STB_GLOBAL
&& ELF_ST_BIND (sym->st_info) < STB_LOOS)
return FALSE;
if (ELF_ST_TYPE (sym->st_info) == STT_FUNC)
return FALSE;
if (sym->st_shndx == SHN_UNDEF)
return FALSE;
bed = get_elf_backend_data (abfd);
if (bed->common_definition (sym))
return FALSE;
if (sym->st_shndx >= SHN_LORESERVE && sym->st_shndx < SHN_ABS)
return FALSE;
return TRUE;
}
static bfd_boolean
elf_link_is_defined_archive_symbol (bfd * abfd, carsym * symdef)
{
Elf_Internal_Shdr * hdr;
bfd_size_type symcount;
bfd_size_type extsymcount;
bfd_size_type extsymoff;
Elf_Internal_Sym *isymbuf;
Elf_Internal_Sym *isym;
Elf_Internal_Sym *isymend;
bfd_boolean result;
abfd = _bfd_get_elt_at_filepos (abfd, symdef->file_offset);
if (abfd == NULL)
return FALSE;
if (! bfd_check_format (abfd, bfd_object))
return FALSE;
if (abfd->archive_pass)
return FALSE;
if ((abfd->flags & DYNAMIC) == 0 || elf_dynsymtab (abfd) == 0)
hdr = &elf_tdata (abfd)->symtab_hdr;
else
hdr = &elf_tdata (abfd)->dynsymtab_hdr;
symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym;
if (elf_bad_symtab (abfd))
{
extsymcount = symcount;
extsymoff = 0;
}
else
{
extsymcount = symcount - hdr->sh_info;
extsymoff = hdr->sh_info;
}
if (extsymcount == 0)
return FALSE;
isymbuf = bfd_elf_get_elf_syms (abfd, hdr, extsymcount, extsymoff,
NULL, NULL, NULL);
if (isymbuf == NULL)
return FALSE;
result = FALSE;
for (isym = isymbuf, isymend = isymbuf + extsymcount; isym < isymend; isym++)
{
const char *name;
name = bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
isym->st_name);
if (name == NULL)
break;
if (strcmp (name, symdef->name) == 0)
{
result = is_global_data_symbol_definition (abfd, isym);
break;
}
}
free (isymbuf);
return result;
}
bfd_boolean
_bfd_elf_add_dynamic_entry (struct bfd_link_info *info,
bfd_vma tag,
bfd_vma val)
{
struct elf_link_hash_table *hash_table;
const struct elf_backend_data *bed;
asection *s;
bfd_size_type newsize;
bfd_byte *newcontents;
Elf_Internal_Dyn dyn;
hash_table = elf_hash_table (info);
if (! is_elf_hash_table (hash_table))
return FALSE;
if (info->warn_shared_textrel && info->shared && tag == DT_TEXTREL)
_bfd_error_handler
(_("warning: creating a DT_TEXTREL in a shared object."));
bed = get_elf_backend_data (hash_table->dynobj);
s = bfd_get_section_by_name (hash_table->dynobj, ".dynamic");
BFD_ASSERT (s != NULL);
newsize = s->size + bed->s->sizeof_dyn;
newcontents = bfd_realloc (s->contents, newsize);
if (newcontents == NULL)
return FALSE;
dyn.d_tag = tag;
dyn.d_un.d_val = val;
bed->s->swap_dyn_out (hash_table->dynobj, &dyn, newcontents + s->size);
s->size = newsize;
s->contents = newcontents;
return TRUE;
}
static int
elf_add_dt_needed_tag (bfd *abfd,
struct bfd_link_info *info,
const char *soname,
bfd_boolean do_it)
{
struct elf_link_hash_table *hash_table;
bfd_size_type oldsize;
bfd_size_type strindex;
if (!_bfd_elf_link_create_dynstrtab (abfd, info))
return -1;
hash_table = elf_hash_table (info);
oldsize = _bfd_elf_strtab_size (hash_table->dynstr);
strindex = _bfd_elf_strtab_add (hash_table->dynstr, soname, FALSE);
if (strindex == (bfd_size_type) -1)
return -1;
if (oldsize == _bfd_elf_strtab_size (hash_table->dynstr))
{
asection *sdyn;
const struct elf_backend_data *bed;
bfd_byte *extdyn;
bed = get_elf_backend_data (hash_table->dynobj);
sdyn = bfd_get_section_by_name (hash_table->dynobj, ".dynamic");
if (sdyn != NULL)
for (extdyn = sdyn->contents;
extdyn < sdyn->contents + sdyn->size;
extdyn += bed->s->sizeof_dyn)
{
Elf_Internal_Dyn dyn;
bed->s->swap_dyn_in (hash_table->dynobj, extdyn, &dyn);
if (dyn.d_tag == DT_NEEDED
&& dyn.d_un.d_val == strindex)
{
_bfd_elf_strtab_delref (hash_table->dynstr, strindex);
return 1;
}
}
}
if (do_it)
{
if (!_bfd_elf_link_create_dynamic_sections (hash_table->dynobj, info))
return -1;
if (!_bfd_elf_add_dynamic_entry (info, DT_NEEDED, strindex))
return -1;
}
else
_bfd_elf_strtab_delref (hash_table->dynstr, strindex);
return 0;
}
struct elf_smash_syms_data
{
bfd *not_needed;
struct elf_link_hash_table *htab;
bfd_boolean twiddled;
};
static bfd_boolean
elf_smash_syms (struct elf_link_hash_entry *h, void *data)
{
struct elf_smash_syms_data *inf = (struct elf_smash_syms_data *) data;
struct bfd_link_hash_entry *bh;
switch (h->root.type)
{
default:
case bfd_link_hash_new:
return TRUE;
case bfd_link_hash_undefined:
if (h->root.u.undef.abfd != inf->not_needed)
return TRUE;
if (h->root.u.undef.weak != NULL
&& h->root.u.undef.weak != inf->not_needed)
{
h->root.type = bfd_link_hash_undefweak;
h->root.u.undef.abfd = h->root.u.undef.weak;
if (h->root.u.undef.next != NULL
|| inf->htab->root.undefs_tail == &h->root)
inf->twiddled = TRUE;
return TRUE;
}
break;
case bfd_link_hash_undefweak:
if (h->root.u.undef.abfd != inf->not_needed)
return TRUE;
break;
case bfd_link_hash_defined:
case bfd_link_hash_defweak:
if (h->root.u.def.section->owner != inf->not_needed)
return TRUE;
break;
case bfd_link_hash_common:
if (h->root.u.c.p->section->owner != inf->not_needed)
return TRUE;
break;
case bfd_link_hash_warning:
case bfd_link_hash_indirect:
elf_smash_syms ((struct elf_link_hash_entry *) h->root.u.i.link, data);
if (h->root.u.i.link->type != bfd_link_hash_new)
return TRUE;
if (h->root.u.i.link->u.undef.abfd != inf->not_needed)
return TRUE;
break;
}
if (h->ref_regular)
abort ();
bh = h->root.u.undef.next;
if (bh == &h->root)
bh = NULL;
if (bh != NULL || inf->htab->root.undefs_tail == &h->root)
inf->twiddled = TRUE;
(*inf->htab->root.table.newfunc) (&h->root.root,
&inf->htab->root.table,
h->root.root.string);
h->root.u.undef.next = bh;
h->root.u.undef.abfd = inf->not_needed;
h->non_elf = 0;
return TRUE;
}
static int
elf_sort_symbol (const void *arg1, const void *arg2)
{
const struct elf_link_hash_entry *h1;
const struct elf_link_hash_entry *h2;
bfd_signed_vma vdiff;
h1 = *(const struct elf_link_hash_entry **) arg1;
h2 = *(const struct elf_link_hash_entry **) arg2;
vdiff = h1->root.u.def.value - h2->root.u.def.value;
if (vdiff != 0)
return vdiff > 0 ? 1 : -1;
else
{
long sdiff = h1->root.u.def.section->id - h2->root.u.def.section->id;
if (sdiff != 0)
return sdiff > 0 ? 1 : -1;
}
return 0;
}
static bfd_boolean
elf_adjust_dynstr_offsets (struct elf_link_hash_entry *h, void *data)
{
struct elf_strtab_hash *dynstr = data;
if (h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if (h->dynindx != -1)
h->dynstr_index = _bfd_elf_strtab_offset (dynstr, h->dynstr_index);
return TRUE;
}
static bfd_boolean
elf_finalize_dynstr (bfd *output_bfd, struct bfd_link_info *info)
{
struct elf_link_hash_table *hash_table = elf_hash_table (info);
struct elf_link_local_dynamic_entry *entry;
struct elf_strtab_hash *dynstr = hash_table->dynstr;
bfd *dynobj = hash_table->dynobj;
asection *sdyn;
bfd_size_type size;
const struct elf_backend_data *bed;
bfd_byte *extdyn;
_bfd_elf_strtab_finalize (dynstr);
size = _bfd_elf_strtab_size (dynstr);
bed = get_elf_backend_data (dynobj);
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
BFD_ASSERT (sdyn != NULL);
for (extdyn = sdyn->contents;
extdyn < sdyn->contents + sdyn->size;
extdyn += bed->s->sizeof_dyn)
{
Elf_Internal_Dyn dyn;
bed->s->swap_dyn_in (dynobj, extdyn, &dyn);
switch (dyn.d_tag)
{
case DT_STRSZ:
dyn.d_un.d_val = size;
break;
case DT_NEEDED:
case DT_SONAME:
case DT_RPATH:
case DT_RUNPATH:
case DT_FILTER:
case DT_AUXILIARY:
dyn.d_un.d_val = _bfd_elf_strtab_offset (dynstr, dyn.d_un.d_val);
break;
default:
continue;
}
bed->s->swap_dyn_out (dynobj, &dyn, extdyn);
}
for (entry = hash_table->dynlocal; entry ; entry = entry->next)
entry->isym.st_name = _bfd_elf_strtab_offset (dynstr,
entry->isym.st_name);
elf_link_hash_traverse (hash_table, elf_adjust_dynstr_offsets, dynstr);
if (elf_tdata (output_bfd)->cverdefs)
{
asection *s;
bfd_byte *p;
bfd_size_type i;
Elf_Internal_Verdef def;
Elf_Internal_Verdaux defaux;
s = bfd_get_section_by_name (dynobj, ".gnu.version_d");
p = s->contents;
do
{
_bfd_elf_swap_verdef_in (output_bfd, (Elf_External_Verdef *) p,
&def);
p += sizeof (Elf_External_Verdef);
if (def.vd_aux != sizeof (Elf_External_Verdef))
continue;
for (i = 0; i < def.vd_cnt; ++i)
{
_bfd_elf_swap_verdaux_in (output_bfd,
(Elf_External_Verdaux *) p, &defaux);
defaux.vda_name = _bfd_elf_strtab_offset (dynstr,
defaux.vda_name);
_bfd_elf_swap_verdaux_out (output_bfd,
&defaux, (Elf_External_Verdaux *) p);
p += sizeof (Elf_External_Verdaux);
}
}
while (def.vd_next);
}
if (elf_tdata (output_bfd)->verref)
{
asection *s;
bfd_byte *p;
bfd_size_type i;
Elf_Internal_Verneed need;
Elf_Internal_Vernaux needaux;
s = bfd_get_section_by_name (dynobj, ".gnu.version_r");
p = s->contents;
do
{
_bfd_elf_swap_verneed_in (output_bfd, (Elf_External_Verneed *) p,
&need);
need.vn_file = _bfd_elf_strtab_offset (dynstr, need.vn_file);
_bfd_elf_swap_verneed_out (output_bfd, &need,
(Elf_External_Verneed *) p);
p += sizeof (Elf_External_Verneed);
for (i = 0; i < need.vn_cnt; ++i)
{
_bfd_elf_swap_vernaux_in (output_bfd,
(Elf_External_Vernaux *) p, &needaux);
needaux.vna_name = _bfd_elf_strtab_offset (dynstr,
needaux.vna_name);
_bfd_elf_swap_vernaux_out (output_bfd,
&needaux,
(Elf_External_Vernaux *) p);
p += sizeof (Elf_External_Vernaux);
}
}
while (need.vn_next);
}
return TRUE;
}
static bfd_boolean
elf_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
{
bfd_boolean (*add_symbol_hook)
(bfd *, struct bfd_link_info *, Elf_Internal_Sym *,
const char **, flagword *, asection **, bfd_vma *);
bfd_boolean (*check_relocs)
(bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
bfd_boolean (*check_directives)
(bfd *, struct bfd_link_info *);
bfd_boolean collect;
Elf_Internal_Shdr *hdr;
bfd_size_type symcount;
bfd_size_type extsymcount;
bfd_size_type extsymoff;
struct elf_link_hash_entry **sym_hash;
bfd_boolean dynamic;
Elf_External_Versym *extversym = NULL;
Elf_External_Versym *ever;
struct elf_link_hash_entry *weaks;
struct elf_link_hash_entry **nondeflt_vers = NULL;
bfd_size_type nondeflt_vers_cnt = 0;
Elf_Internal_Sym *isymbuf = NULL;
Elf_Internal_Sym *isym;
Elf_Internal_Sym *isymend;
const struct elf_backend_data *bed;
bfd_boolean add_needed;
struct elf_link_hash_table * hash_table;
bfd_size_type amt;
hash_table = elf_hash_table (info);
bed = get_elf_backend_data (abfd);
add_symbol_hook = bed->elf_add_symbol_hook;
collect = bed->collect;
if ((abfd->flags & DYNAMIC) == 0)
dynamic = FALSE;
else
{
dynamic = TRUE;
if (info->relocatable
|| !is_elf_hash_table (hash_table)
|| hash_table->root.creator != abfd->xvec)
{
if (info->relocatable)
bfd_set_error (bfd_error_invalid_operation);
else
bfd_set_error (bfd_error_wrong_format);
goto error_return;
}
}
if (info->executable)
{
asection *s;
for (s = abfd->sections; s != NULL; s = s->next)
{
const char *name;
name = bfd_get_section_name (abfd, s);
if (strncmp (name, ".gnu.warning.", sizeof ".gnu.warning." - 1) == 0)
{
char *msg;
bfd_size_type sz;
name += sizeof ".gnu.warning." - 1;
if (dynamic)
{
struct elf_link_hash_entry *h;
h = elf_link_hash_lookup (hash_table, name,
FALSE, FALSE, TRUE);
if (h != NULL
&& (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak))
{
s->size = 0;
continue;
}
}
sz = s->size;
msg = bfd_alloc (abfd, sz + 1);
if (msg == NULL)
goto error_return;
if (! bfd_get_section_contents (abfd, s, msg, 0, sz))
goto error_return;
msg[sz] = '\0';
if (! (_bfd_generic_link_add_one_symbol
(info, abfd, name, BSF_WARNING, s, 0, msg,
FALSE, collect, NULL)))
goto error_return;
if (! info->relocatable)
{
s->size = 0;
s->flags |= SEC_EXCLUDE;
}
}
}
}
add_needed = TRUE;
if (! dynamic)
{
if (info->shared
&& is_elf_hash_table (hash_table)
&& hash_table->root.creator == abfd->xvec
&& ! hash_table->dynamic_sections_created)
{
if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
goto error_return;
}
}
else if (!is_elf_hash_table (hash_table))
goto error_return;
else
{
asection *s;
const char *soname = NULL;
struct bfd_link_needed_list *rpath = NULL, *runpath = NULL;
int ret;
if ((s = abfd->sections) != NULL
&& s->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
goto error_return;
add_needed = (elf_dyn_lib_class (abfd)
& (DYN_AS_NEEDED | DYN_DT_NEEDED
| DYN_NO_NEEDED)) == 0;
s = bfd_get_section_by_name (abfd, ".dynamic");
if (s != NULL)
{
bfd_byte *dynbuf;
bfd_byte *extdyn;
int elfsec;
unsigned long shlink;
if (!bfd_malloc_and_get_section (abfd, s, &dynbuf))
goto error_free_dyn;
elfsec = _bfd_elf_section_from_bfd_section (abfd, s);
if (elfsec == -1)
goto error_free_dyn;
shlink = elf_elfsections (abfd)[elfsec]->sh_link;
for (extdyn = dynbuf;
extdyn < dynbuf + s->size;
extdyn += bed->s->sizeof_dyn)
{
Elf_Internal_Dyn dyn;
bed->s->swap_dyn_in (abfd, extdyn, &dyn);
if (dyn.d_tag == DT_SONAME)
{
unsigned int tagv = dyn.d_un.d_val;
soname = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
if (soname == NULL)
goto error_free_dyn;
}
if (dyn.d_tag == DT_NEEDED)
{
struct bfd_link_needed_list *n, **pn;
char *fnm, *anm;
unsigned int tagv = dyn.d_un.d_val;
amt = sizeof (struct bfd_link_needed_list);
n = bfd_alloc (abfd, amt);
fnm = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
if (n == NULL || fnm == NULL)
goto error_free_dyn;
amt = strlen (fnm) + 1;
anm = bfd_alloc (abfd, amt);
if (anm == NULL)
goto error_free_dyn;
memcpy (anm, fnm, amt);
n->name = anm;
n->by = abfd;
n->next = NULL;
for (pn = & hash_table->needed;
*pn != NULL;
pn = &(*pn)->next)
;
*pn = n;
}
if (dyn.d_tag == DT_RUNPATH)
{
struct bfd_link_needed_list *n, **pn;
char *fnm, *anm;
unsigned int tagv = dyn.d_un.d_val;
amt = sizeof (struct bfd_link_needed_list);
n = bfd_alloc (abfd, amt);
fnm = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
if (n == NULL || fnm == NULL)
goto error_free_dyn;
amt = strlen (fnm) + 1;
anm = bfd_alloc (abfd, amt);
if (anm == NULL)
goto error_free_dyn;
memcpy (anm, fnm, amt);
n->name = anm;
n->by = abfd;
n->next = NULL;
for (pn = & runpath;
*pn != NULL;
pn = &(*pn)->next)
;
*pn = n;
}
if (!runpath && dyn.d_tag == DT_RPATH)
{
struct bfd_link_needed_list *n, **pn;
char *fnm, *anm;
unsigned int tagv = dyn.d_un.d_val;
amt = sizeof (struct bfd_link_needed_list);
n = bfd_alloc (abfd, amt);
fnm = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
if (n == NULL || fnm == NULL)
goto error_free_dyn;
amt = strlen (fnm) + 1;
anm = bfd_alloc (abfd, amt);
if (anm == NULL)
{
error_free_dyn:
free (dynbuf);
goto error_return;
}
memcpy (anm, fnm, amt);
n->name = anm;
n->by = abfd;
n->next = NULL;
for (pn = & rpath;
*pn != NULL;
pn = &(*pn)->next)
;
*pn = n;
}
}
free (dynbuf);
}
if (runpath)
rpath = runpath;
if (rpath)
{
struct bfd_link_needed_list **pn;
for (pn = & hash_table->runpath;
*pn != NULL;
pn = &(*pn)->next)
;
*pn = rpath;
}
bfd_section_list_clear (abfd);
if (soname == NULL || *soname == '\0')
{
soname = elf_dt_name (abfd);
if (soname == NULL || *soname == '\0')
soname = bfd_get_filename (abfd);
}
elf_dt_name (abfd) = soname;
ret = elf_add_dt_needed_tag (abfd, info, soname, add_needed);
if (ret < 0)
goto error_return;
if (ret > 0)
return TRUE;
}
if (! dynamic || elf_dynsymtab (abfd) == 0)
hdr = &elf_tdata (abfd)->symtab_hdr;
else
hdr = &elf_tdata (abfd)->dynsymtab_hdr;
symcount = hdr->sh_size / bed->s->sizeof_sym;
if (elf_bad_symtab (abfd))
{
extsymcount = symcount;
extsymoff = 0;
}
else
{
extsymcount = symcount - hdr->sh_info;
extsymoff = hdr->sh_info;
}
sym_hash = NULL;
if (extsymcount != 0)
{
isymbuf = bfd_elf_get_elf_syms (abfd, hdr, extsymcount, extsymoff,
NULL, NULL, NULL);
if (isymbuf == NULL)
goto error_return;
amt = extsymcount * sizeof (struct elf_link_hash_entry *);
sym_hash = bfd_alloc (abfd, amt);
if (sym_hash == NULL)
goto error_free_sym;
elf_sym_hashes (abfd) = sym_hash;
}
if (dynamic)
{
if (!_bfd_elf_slurp_version_tables (abfd,
info->default_imported_symver))
goto error_free_sym;
if (elf_dynversym (abfd) != 0)
{
Elf_Internal_Shdr *versymhdr;
versymhdr = &elf_tdata (abfd)->dynversym_hdr;
extversym = bfd_malloc (versymhdr->sh_size);
if (extversym == NULL)
goto error_free_sym;
amt = versymhdr->sh_size;
if (bfd_seek (abfd, versymhdr->sh_offset, SEEK_SET) != 0
|| bfd_bread (extversym, amt, abfd) != amt)
goto error_free_vers;
}
}
weaks = NULL;
ever = extversym != NULL ? extversym + extsymoff : NULL;
for (isym = isymbuf, isymend = isymbuf + extsymcount;
isym < isymend;
isym++, sym_hash++, ever = (ever != NULL ? ever + 1 : NULL))
{
int bind;
bfd_vma value;
asection *sec, *new_sec;
flagword flags;
const char *name;
struct elf_link_hash_entry *h;
bfd_boolean definition;
bfd_boolean size_change_ok;
bfd_boolean type_change_ok;
bfd_boolean new_weakdef;
bfd_boolean override;
bfd_boolean common;
unsigned int old_alignment;
bfd *old_bfd;
override = FALSE;
flags = BSF_NO_FLAGS;
sec = NULL;
value = isym->st_value;
*sym_hash = NULL;
common = bed->common_definition (isym);
bind = ELF_ST_BIND (isym->st_info);
if (bind == STB_LOCAL)
{
continue;
}
else if (bind == STB_GLOBAL)
{
if (isym->st_shndx != SHN_UNDEF && !common)
flags = BSF_GLOBAL;
}
else if (bind == STB_WEAK)
flags = BSF_WEAK;
else
{
}
if (isym->st_shndx == SHN_UNDEF)
sec = bfd_und_section_ptr;
else if (isym->st_shndx < SHN_LORESERVE || isym->st_shndx > SHN_HIRESERVE)
{
sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
if (sec == NULL)
sec = bfd_abs_section_ptr;
else if (sec->kept_section)
{
sec = bfd_und_section_ptr;
isym->st_shndx = SHN_UNDEF;
isym->st_other = STV_DEFAULT
| (isym->st_other & ~ ELF_ST_VISIBILITY(-1));
}
else if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0)
value -= sec->vma;
}
else if (isym->st_shndx == SHN_ABS)
sec = bfd_abs_section_ptr;
else if (isym->st_shndx == SHN_COMMON)
{
sec = bfd_com_section_ptr;
value = isym->st_size;
}
else
{
}
name = bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
isym->st_name);
if (name == NULL)
goto error_free_vers;
if (isym->st_shndx == SHN_COMMON
&& ELF_ST_TYPE (isym->st_info) == STT_TLS)
{
asection *tcomm = bfd_get_section_by_name (abfd, ".tcommon");
if (tcomm == NULL)
{
tcomm = bfd_make_section_with_flags (abfd, ".tcommon",
(SEC_ALLOC
| SEC_IS_COMMON
| SEC_LINKER_CREATED
| SEC_THREAD_LOCAL));
if (tcomm == NULL)
goto error_free_vers;
}
sec = tcomm;
}
else if (add_symbol_hook)
{
if (! (*add_symbol_hook) (abfd, info, isym, &name, &flags, &sec,
&value))
goto error_free_vers;
if (name == NULL)
continue;
}
if (sec == NULL)
{
bfd_set_error (bfd_error_bad_value);
goto error_free_vers;
}
if (bfd_is_und_section (sec)
|| bfd_is_com_section (sec))
definition = FALSE;
else
definition = TRUE;
size_change_ok = FALSE;
type_change_ok = get_elf_backend_data (abfd)->type_change_ok;
old_alignment = 0;
old_bfd = NULL;
new_sec = sec;
if (is_elf_hash_table (hash_table))
{
Elf_Internal_Versym iver;
unsigned int vernum = 0;
bfd_boolean skip;
if (ever == NULL)
{
if (info->default_imported_symver)
iver.vs_vers = elf_tdata (abfd)->cverdefs;
else
iver.vs_vers = 0;
}
else
_bfd_elf_swap_versym_in (abfd, ever, &iver);
vernum = iver.vs_vers & VERSYM_VERSION;
if ((iver.vs_vers & VERSYM_HIDDEN) != 0
|| (vernum > 1 && (! bfd_is_abs_section (sec)
|| ELF_ST_TYPE (isym->st_info) == STT_FUNC)))
{
const char *verstr;
size_t namelen, verlen, newlen;
char *newname, *p;
if (isym->st_shndx != SHN_UNDEF)
{
if (vernum > elf_tdata (abfd)->cverdefs)
verstr = NULL;
else if (vernum > 1)
verstr =
elf_tdata (abfd)->verdef[vernum - 1].vd_nodename;
else
verstr = "";
if (verstr == NULL)
{
(*_bfd_error_handler)
(_("%B: %s: invalid version %u (max %d)"),
abfd, name, vernum,
elf_tdata (abfd)->cverdefs);
bfd_set_error (bfd_error_bad_value);
goto error_free_vers;
}
}
else
{
Elf_Internal_Verneed *t;
verstr = NULL;
for (t = elf_tdata (abfd)->verref;
t != NULL;
t = t->vn_nextref)
{
Elf_Internal_Vernaux *a;
for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
{
if (a->vna_other == vernum)
{
verstr = a->vna_nodename;
break;
}
}
if (a != NULL)
break;
}
if (verstr == NULL)
{
(*_bfd_error_handler)
(_("%B: %s: invalid needed version %d"),
abfd, name, vernum);
bfd_set_error (bfd_error_bad_value);
goto error_free_vers;
}
}
namelen = strlen (name);
verlen = strlen (verstr);
newlen = namelen + verlen + 2;
if ((iver.vs_vers & VERSYM_HIDDEN) == 0
&& isym->st_shndx != SHN_UNDEF)
++newlen;
newname = bfd_alloc (abfd, newlen);
if (newname == NULL)
goto error_free_vers;
memcpy (newname, name, namelen);
p = newname + namelen;
*p++ = ELF_VER_CHR;
if ((iver.vs_vers & VERSYM_HIDDEN) == 0
&& isym->st_shndx != SHN_UNDEF)
*p++ = ELF_VER_CHR;
memcpy (p, verstr, verlen + 1);
name = newname;
}
if (!_bfd_elf_merge_symbol (abfd, info, name, isym, &sec,
&value, &old_alignment,
sym_hash, &skip, &override,
&type_change_ok, &size_change_ok))
goto error_free_vers;
if (skip)
continue;
if (override)
definition = FALSE;
h = *sym_hash;
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
switch (h->root.type)
{
default:
break;
case bfd_link_hash_defined:
case bfd_link_hash_defweak:
old_bfd = h->root.u.def.section->owner;
break;
case bfd_link_hash_common:
old_bfd = h->root.u.c.p->section->owner;
old_alignment = h->root.u.c.p->alignment_power;
break;
}
if (elf_tdata (abfd)->verdef != NULL
&& ! override
&& vernum > 1
&& definition)
h->verinfo.verdef = &elf_tdata (abfd)->verdef[vernum - 1];
}
if (! (_bfd_generic_link_add_one_symbol
(info, abfd, name, flags, sec, value, NULL, FALSE, collect,
(struct bfd_link_hash_entry **) sym_hash)))
goto error_free_vers;
h = *sym_hash;
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
*sym_hash = h;
new_weakdef = FALSE;
if (dynamic
&& definition
&& (flags & BSF_WEAK) != 0
&& ELF_ST_TYPE (isym->st_info) != STT_FUNC
&& is_elf_hash_table (hash_table)
&& h->u.weakdef == NULL)
{
h->u.weakdef = weaks;
weaks = h;
new_weakdef = TRUE;
}
if ((common || bfd_is_com_section (sec))
&& h->root.type == bfd_link_hash_common)
{
unsigned int align;
if (common)
align = bfd_log2 (isym->st_value);
else
{
align = new_sec->alignment_power;
}
if (align > old_alignment
|| (isym->st_value == 1 && old_alignment == 0))
h->root.u.c.p->alignment_power = align;
else
h->root.u.c.p->alignment_power = old_alignment;
}
if (is_elf_hash_table (hash_table))
{
bfd_boolean dynsym;
if ((old_alignment || common)
&& h->root.type != bfd_link_hash_common)
{
unsigned int common_align;
unsigned int normal_align;
unsigned int symbol_align;
bfd *normal_bfd;
bfd *common_bfd;
symbol_align = ffs (h->root.u.def.value) - 1;
if (h->root.u.def.section->owner != NULL
&& (h->root.u.def.section->owner->flags & DYNAMIC) == 0)
{
normal_align = h->root.u.def.section->alignment_power;
if (normal_align > symbol_align)
normal_align = symbol_align;
}
else
normal_align = symbol_align;
if (old_alignment)
{
common_align = old_alignment;
common_bfd = old_bfd;
normal_bfd = abfd;
}
else
{
common_align = bfd_log2 (isym->st_value);
common_bfd = abfd;
normal_bfd = old_bfd;
}
if (normal_align < common_align)
(*_bfd_error_handler)
(_("Warning: alignment %u of symbol `%s' in %B"
" is smaller than %u in %B"),
normal_bfd, common_bfd,
1 << normal_align, name, 1 << common_align);
}
if (isym->st_size != 0
&& (definition || h->size == 0))
{
if (h->size != 0 && h->size != isym->st_size && ! size_change_ok)
(*_bfd_error_handler)
(_("Warning: size of symbol `%s' changed"
" from %lu in %B to %lu in %B"),
old_bfd, abfd,
name, (unsigned long) h->size,
(unsigned long) isym->st_size);
h->size = isym->st_size;
}
if (h->root.type == bfd_link_hash_common)
h->size = h->root.u.c.size;
if (ELF_ST_TYPE (isym->st_info) != STT_NOTYPE
&& (definition || h->type == STT_NOTYPE))
{
if (h->type != STT_NOTYPE
&& h->type != ELF_ST_TYPE (isym->st_info)
&& ! type_change_ok)
(*_bfd_error_handler)
(_("Warning: type of symbol `%s' changed"
" from %d to %d in %B"),
abfd, name, h->type, ELF_ST_TYPE (isym->st_info));
h->type = ELF_ST_TYPE (isym->st_info);
}
if (bed->elf_backend_merge_symbol_attribute)
(*bed->elf_backend_merge_symbol_attribute) (h, isym, definition,
dynamic);
if (definition && !dynamic
&& (abfd->no_export
|| (abfd->my_archive && abfd->my_archive->no_export))
&& ELF_ST_VISIBILITY (isym->st_other) != STV_INTERNAL)
isym->st_other = STV_HIDDEN | (isym->st_other & ~ ELF_ST_VISIBILITY (-1));
if (isym->st_other != 0 && !dynamic)
{
unsigned char hvis, symvis, other, nvis;
other = (definition ? isym->st_other : h->other);
other &= ~ ELF_ST_VISIBILITY (-1);
hvis = ELF_ST_VISIBILITY (h->other);
symvis = ELF_ST_VISIBILITY (isym->st_other);
if (! hvis)
nvis = symvis;
else if (! symvis)
nvis = hvis;
else
nvis = hvis < symvis ? hvis : symvis;
h->other = other | nvis;
}
dynsym = FALSE;
if (! dynamic)
{
if (! definition)
{
h->ref_regular = 1;
if (bind != STB_WEAK)
h->ref_regular_nonweak = 1;
}
else
h->def_regular = 1;
if (! info->executable
|| h->def_dynamic
|| h->ref_dynamic)
dynsym = TRUE;
}
else
{
if (! definition)
h->ref_dynamic = 1;
else
h->def_dynamic = 1;
if (h->def_regular
|| h->ref_regular
|| (h->u.weakdef != NULL
&& ! new_weakdef
&& h->u.weakdef->dynindx != -1))
dynsym = TRUE;
}
if (definition || h->root.type == bfd_link_hash_common)
if (!_bfd_elf_add_default_symbol (abfd, info, h, name, isym,
&sec, &value, &dynsym,
override))
goto error_free_vers;
if (definition && !dynamic)
{
char *p = strchr (name, ELF_VER_CHR);
if (p != NULL && p[1] != ELF_VER_CHR)
{
if (! nondeflt_vers)
{
amt = (isymend - isym + 1)
* sizeof (struct elf_link_hash_entry *);
nondeflt_vers = bfd_malloc (amt);
}
nondeflt_vers [nondeflt_vers_cnt++] = h;
}
}
if (dynsym && h->dynindx == -1)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
goto error_free_vers;
if (h->u.weakdef != NULL
&& ! new_weakdef
&& h->u.weakdef->dynindx == -1)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h->u.weakdef))
goto error_free_vers;
}
}
else if (dynsym && h->dynindx != -1)
switch (ELF_ST_VISIBILITY (h->other))
{
case STV_INTERNAL:
case STV_HIDDEN:
(*bed->elf_backend_hide_symbol) (info, h, TRUE);
dynsym = FALSE;
break;
}
if (!add_needed
&& definition
&& dynsym
&& h->ref_regular)
{
int ret;
const char *soname = elf_dt_name (abfd);
if ((elf_dyn_lib_class (abfd) & DYN_NO_NEEDED) != 0)
{
(*_bfd_error_handler)
(_("%s: invalid DSO for symbol `%s' definition"),
abfd, name);
bfd_set_error (bfd_error_bad_value);
goto error_free_vers;
}
elf_dyn_lib_class (abfd) &= ~DYN_AS_NEEDED;
add_needed = TRUE;
ret = elf_add_dt_needed_tag (abfd, info, soname, add_needed);
if (ret < 0)
goto error_free_vers;
BFD_ASSERT (ret == 0);
}
}
}
if (nondeflt_vers != NULL)
{
bfd_size_type cnt, symidx;
for (cnt = 0; cnt < nondeflt_vers_cnt; ++cnt)
{
struct elf_link_hash_entry *h = nondeflt_vers[cnt], *hi;
char *shortname, *p;
p = strchr (h->root.root.string, ELF_VER_CHR);
if (p == NULL
|| (h->root.type != bfd_link_hash_defined
&& h->root.type != bfd_link_hash_defweak))
continue;
amt = p - h->root.root.string;
shortname = bfd_malloc (amt + 1);
memcpy (shortname, h->root.root.string, amt);
shortname[amt] = '\0';
hi = (struct elf_link_hash_entry *)
bfd_link_hash_lookup (&hash_table->root, shortname,
FALSE, FALSE, FALSE);
if (hi != NULL
&& hi->root.type == h->root.type
&& hi->root.u.def.value == h->root.u.def.value
&& hi->root.u.def.section == h->root.u.def.section)
{
(*bed->elf_backend_hide_symbol) (info, hi, TRUE);
hi->root.type = bfd_link_hash_indirect;
hi->root.u.i.link = (struct bfd_link_hash_entry *) h;
(*bed->elf_backend_copy_indirect_symbol) (bed, h, hi);
sym_hash = elf_sym_hashes (abfd);
if (sym_hash)
for (symidx = 0; symidx < extsymcount; ++symidx)
if (sym_hash[symidx] == hi)
{
sym_hash[symidx] = h;
break;
}
}
free (shortname);
}
free (nondeflt_vers);
nondeflt_vers = NULL;
}
if (extversym != NULL)
{
free (extversym);
extversym = NULL;
}
if (isymbuf != NULL)
free (isymbuf);
isymbuf = NULL;
if (!add_needed
&& (elf_dyn_lib_class (abfd) & DYN_AS_NEEDED) != 0)
{
struct elf_smash_syms_data inf;
inf.not_needed = abfd;
inf.htab = hash_table;
inf.twiddled = FALSE;
elf_link_hash_traverse (hash_table, elf_smash_syms, &inf);
if (inf.twiddled)
bfd_link_repair_undef_list (&hash_table->root);
weaks = NULL;
}
if (weaks != NULL)
{
struct elf_link_hash_entry **hpp;
struct elf_link_hash_entry **hppend;
struct elf_link_hash_entry **sorted_sym_hash;
struct elf_link_hash_entry *h;
size_t sym_count;
amt = extsymcount * sizeof (struct elf_link_hash_entry *);
sorted_sym_hash = bfd_malloc (amt);
if (sorted_sym_hash == NULL)
goto error_return;
sym_hash = sorted_sym_hash;
hpp = elf_sym_hashes (abfd);
hppend = hpp + extsymcount;
sym_count = 0;
for (; hpp < hppend; hpp++)
{
h = *hpp;
if (h != NULL
&& h->root.type == bfd_link_hash_defined
&& h->type != STT_FUNC)
{
*sym_hash = h;
sym_hash++;
sym_count++;
}
}
qsort (sorted_sym_hash, sym_count,
sizeof (struct elf_link_hash_entry *),
elf_sort_symbol);
while (weaks != NULL)
{
struct elf_link_hash_entry *hlook;
asection *slook;
bfd_vma vlook;
long ilook;
size_t i, j, idx;
hlook = weaks;
weaks = hlook->u.weakdef;
hlook->u.weakdef = NULL;
BFD_ASSERT (hlook->root.type == bfd_link_hash_defined
|| hlook->root.type == bfd_link_hash_defweak
|| hlook->root.type == bfd_link_hash_common
|| hlook->root.type == bfd_link_hash_indirect);
slook = hlook->root.u.def.section;
vlook = hlook->root.u.def.value;
ilook = -1;
i = 0;
j = sym_count;
while (i < j)
{
bfd_signed_vma vdiff;
idx = (i + j) / 2;
h = sorted_sym_hash [idx];
vdiff = vlook - h->root.u.def.value;
if (vdiff < 0)
j = idx;
else if (vdiff > 0)
i = idx + 1;
else
{
long sdiff = slook->id - h->root.u.def.section->id;
if (sdiff < 0)
j = idx;
else if (sdiff > 0)
i = idx + 1;
else
{
ilook = idx;
break;
}
}
}
if (ilook == -1)
continue;
for (i = ilook; i < sym_count; i++)
{
h = sorted_sym_hash [i];
if (h->root.u.def.value != vlook
|| h->root.u.def.section != slook)
break;
else if (h != hlook)
{
hlook->u.weakdef = h;
if (hlook->dynindx != -1 && h->dynindx == -1)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
goto error_return;
}
if (h->dynindx != -1 && hlook->dynindx == -1)
{
if (! bfd_elf_link_record_dynamic_symbol (info, hlook))
goto error_return;
}
break;
}
}
}
free (sorted_sym_hash);
}
check_directives = get_elf_backend_data (abfd)->check_directives;
if (check_directives)
check_directives (abfd, info);
check_relocs = get_elf_backend_data (abfd)->check_relocs;
if (! dynamic
&& is_elf_hash_table (hash_table)
&& hash_table->root.creator == abfd->xvec
&& check_relocs != NULL)
{
asection *o;
for (o = abfd->sections; o != NULL; o = o->next)
{
Elf_Internal_Rela *internal_relocs;
bfd_boolean ok;
if ((o->flags & SEC_RELOC) == 0
|| o->reloc_count == 0
|| ((info->strip == strip_all || info->strip == strip_debugger)
&& (o->flags & SEC_DEBUGGING) != 0)
|| bfd_is_abs_section (o->output_section))
continue;
internal_relocs = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL,
info->keep_memory);
if (internal_relocs == NULL)
goto error_return;
ok = (*check_relocs) (abfd, info, o, internal_relocs);
if (elf_section_data (o)->relocs != internal_relocs)
free (internal_relocs);
if (! ok)
goto error_return;
}
}
if (! dynamic
&& ! info->traditional_format
&& is_elf_hash_table (hash_table)
&& (info->strip != strip_all && info->strip != strip_debugger))
{
asection *stabstr;
stabstr = bfd_get_section_by_name (abfd, ".stabstr");
if (stabstr != NULL)
{
bfd_size_type string_offset = 0;
asection *stab;
for (stab = abfd->sections; stab; stab = stab->next)
if (strncmp (".stab", stab->name, 5) == 0
&& (!stab->name[5] ||
(stab->name[5] == '.' && ISDIGIT (stab->name[6])))
&& (stab->flags & SEC_MERGE) == 0
&& !bfd_is_abs_section (stab->output_section))
{
struct bfd_elf_section_data *secdata;
secdata = elf_section_data (stab);
if (! _bfd_link_section_stabs (abfd,
&hash_table->stab_info,
stab, stabstr,
&secdata->sec_info,
&string_offset))
goto error_return;
if (secdata->sec_info)
stab->sec_info_type = ELF_INFO_TYPE_STABS;
}
}
}
if (is_elf_hash_table (hash_table) && add_needed)
{
struct elf_link_loaded_list *n;
n = bfd_alloc (abfd, sizeof (struct elf_link_loaded_list));
if (n == NULL)
goto error_return;
n->abfd = abfd;
n->next = hash_table->loaded;
hash_table->loaded = n;
}
return TRUE;
error_free_vers:
if (nondeflt_vers != NULL)
free (nondeflt_vers);
if (extversym != NULL)
free (extversym);
error_free_sym:
if (isymbuf != NULL)
free (isymbuf);
error_return:
return FALSE;
}
struct elf_link_hash_entry *
_bfd_elf_archive_symbol_lookup (bfd *abfd,
struct bfd_link_info *info,
const char *name)
{
struct elf_link_hash_entry *h;
char *p, *copy;
size_t len, first;
h = elf_link_hash_lookup (elf_hash_table (info), name, FALSE, FALSE, FALSE);
if (h != NULL)
return h;
p = strchr (name, ELF_VER_CHR);
if (p == NULL || p[1] != ELF_VER_CHR)
return h;
len = strlen (name);
copy = bfd_alloc (abfd, len);
if (copy == NULL)
return (struct elf_link_hash_entry *) 0 - 1;
first = p - name + 1;
memcpy (copy, name, first);
memcpy (copy + first, name + first + 1, len - first);
h = elf_link_hash_lookup (elf_hash_table (info), copy, FALSE, FALSE, FALSE);
if (h == NULL)
{
copy[first - 1] = '\0';
h = elf_link_hash_lookup (elf_hash_table (info), copy,
FALSE, FALSE, FALSE);
}
bfd_release (abfd, copy);
return h;
}
static bfd_boolean
elf_link_add_archive_symbols (bfd *abfd, struct bfd_link_info *info)
{
symindex c;
bfd_boolean *defined = NULL;
bfd_boolean *included = NULL;
carsym *symdefs;
bfd_boolean loop;
bfd_size_type amt;
const struct elf_backend_data *bed;
struct elf_link_hash_entry * (*archive_symbol_lookup)
(bfd *, struct bfd_link_info *, const char *);
if (! bfd_has_map (abfd))
{
if (bfd_openr_next_archived_file (abfd, NULL) == NULL)
return TRUE;
bfd_set_error (bfd_error_no_armap);
return FALSE;
}
c = bfd_ardata (abfd)->symdef_count;
if (c == 0)
return TRUE;
amt = c;
amt *= sizeof (bfd_boolean);
defined = bfd_zmalloc (amt);
included = bfd_zmalloc (amt);
if (defined == NULL || included == NULL)
goto error_return;
symdefs = bfd_ardata (abfd)->symdefs;
bed = get_elf_backend_data (abfd);
archive_symbol_lookup = bed->elf_backend_archive_symbol_lookup;
do
{
file_ptr last;
symindex i;
carsym *symdef;
carsym *symdefend;
loop = FALSE;
last = -1;
symdef = symdefs;
symdefend = symdef + c;
for (i = 0; symdef < symdefend; symdef++, i++)
{
struct elf_link_hash_entry *h;
bfd *element;
struct bfd_link_hash_entry *undefs_tail;
symindex mark;
if (defined[i] || included[i])
continue;
if (symdef->file_offset == last)
{
included[i] = TRUE;
continue;
}
h = archive_symbol_lookup (abfd, info, symdef->name);
if (h == (struct elf_link_hash_entry *) 0 - 1)
goto error_return;
if (h == NULL)
continue;
if (h->root.type == bfd_link_hash_common)
{
if (! elf_link_is_defined_archive_symbol (abfd, symdef))
continue;
}
else if (h->root.type != bfd_link_hash_undefined)
{
if (h->root.type != bfd_link_hash_undefweak)
defined[i] = TRUE;
continue;
}
element = _bfd_get_elt_at_filepos (abfd, symdef->file_offset);
if (element == NULL)
goto error_return;
if (! bfd_check_format (element, bfd_object))
goto error_return;
if (element->archive_pass != 0)
{
bfd_set_error (bfd_error_bad_value);
goto error_return;
}
element->archive_pass = 1;
undefs_tail = info->hash->undefs_tail;
if (! (*info->callbacks->add_archive_element) (info, element,
symdef->name))
goto error_return;
if (! bfd_link_add_symbols (element, info))
goto error_return;
if (undefs_tail != info->hash->undefs_tail)
loop = TRUE;
mark = i;
do
{
included[mark] = TRUE;
if (mark == 0)
break;
--mark;
}
while (symdefs[mark].file_offset == symdef->file_offset);
last = symdef->file_offset;
}
}
while (loop);
free (defined);
free (included);
return TRUE;
error_return:
if (defined != NULL)
free (defined);
if (included != NULL)
free (included);
return FALSE;
}
bfd_boolean
bfd_elf_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
{
switch (bfd_get_format (abfd))
{
case bfd_object:
return elf_link_add_object_symbols (abfd, info);
case bfd_archive:
return elf_link_add_archive_symbols (abfd, info);
default:
bfd_set_error (bfd_error_wrong_format);
return FALSE;
}
}
static bfd_boolean
elf_collect_hash_codes (struct elf_link_hash_entry *h, void *data)
{
unsigned long **valuep = data;
const char *name;
char *p;
unsigned long ha;
char *alc = NULL;
if (h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if (h->dynindx == -1)
return TRUE;
name = h->root.root.string;
p = strchr (name, ELF_VER_CHR);
if (p != NULL)
{
alc = bfd_malloc (p - name + 1);
memcpy (alc, name, p - name);
alc[p - name] = '\0';
name = alc;
}
ha = bfd_elf_hash (name);
*(*valuep)++ = ha;
h->u.elf_hash_value = ha;
if (alc != NULL)
free (alc);
return TRUE;
}
static const size_t elf_buckets[] =
{
1, 3, 17, 37, 67, 97, 131, 197, 263, 521, 1031, 2053, 4099, 8209,
16411, 32771, 0
};
static size_t
compute_bucket_count (struct bfd_link_info *info)
{
size_t dynsymcount = elf_hash_table (info)->dynsymcount;
size_t best_size = 0;
unsigned long int *hashcodes;
unsigned long int *hashcodesp;
unsigned long int i;
bfd_size_type amt;
amt = dynsymcount;
amt *= sizeof (unsigned long int);
hashcodes = bfd_malloc (amt);
if (hashcodes == NULL)
return 0;
hashcodesp = hashcodes;
elf_link_hash_traverse (elf_hash_table (info),
elf_collect_hash_codes, &hashcodesp);
#ifdef BFD_HOST_U_64_BIT
if (info->optimize)
{
unsigned long int nsyms = hashcodesp - hashcodes;
size_t minsize;
size_t maxsize;
BFD_HOST_U_64_BIT best_chlen = ~((BFD_HOST_U_64_BIT) 0);
unsigned long int *counts ;
bfd *dynobj = elf_hash_table (info)->dynobj;
const struct elf_backend_data *bed = get_elf_backend_data (dynobj);
minsize = nsyms / 4;
if (minsize == 0)
minsize = 1;
best_size = maxsize = nsyms * 2;
amt = maxsize;
amt *= sizeof (unsigned long int);
counts = bfd_malloc (amt);
if (counts == NULL)
{
free (hashcodes);
return 0;
}
for (i = minsize; i < maxsize; ++i)
{
BFD_HOST_U_64_BIT max;
unsigned long int j;
unsigned long int fact;
memset (counts, '\0', i * sizeof (unsigned long int));
for (j = 0; j < nsyms; ++j)
++counts[hashcodes[j] % i];
# ifndef BFD_TARGET_PAGESIZE
# define BFD_TARGET_PAGESIZE (4096)
# endif
max = (2 + nsyms) * (bed->s->arch_size / 8);
# if 1
for (j = 0; j < i; ++j)
max += counts[j] * counts[j];
fact = i / (BFD_TARGET_PAGESIZE / (bed->s->arch_size / 8)) + 1;
max *= fact * fact;
# else
for (j = 0; j < i; ++j)
max += (1 + counts[j]) * (1 + counts[j]);
fact = i / (BFD_TARGET_PAGESIZE / (bed->s->arch_size / 8)) + 1;
max *= fact;
# endif
if (max < best_chlen)
{
best_chlen = max;
best_size = i;
}
}
free (counts);
}
else
#endif
{
for (i = 0; elf_buckets[i] != 0; i++)
{
best_size = elf_buckets[i];
if (dynsymcount < elf_buckets[i + 1])
break;
}
}
free (hashcodes);
return best_size;
}
bfd_boolean
bfd_elf_size_dynamic_sections (bfd *output_bfd,
const char *soname,
const char *rpath,
const char *filter_shlib,
const char * const *auxiliary_filters,
struct bfd_link_info *info,
asection **sinterpptr,
struct bfd_elf_version_tree *verdefs)
{
bfd_size_type soname_indx;
bfd *dynobj;
const struct elf_backend_data *bed;
struct elf_assign_sym_version_info asvinfo;
*sinterpptr = NULL;
soname_indx = (bfd_size_type) -1;
if (!is_elf_hash_table (info->hash))
return TRUE;
elf_tdata (output_bfd)->relro = info->relro;
if (info->execstack)
elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | PF_X;
else if (info->noexecstack)
elf_tdata (output_bfd)->stack_flags = PF_R | PF_W;
else
{
bfd *inputobj;
asection *notesec = NULL;
int exec = 0;
for (inputobj = info->input_bfds;
inputobj;
inputobj = inputobj->link_next)
{
asection *s;
if (inputobj->flags & (DYNAMIC | BFD_LINKER_CREATED))
continue;
s = bfd_get_section_by_name (inputobj, ".note.GNU-stack");
if (s)
{
if (s->flags & SEC_CODE)
exec = PF_X;
notesec = s;
}
else
exec = PF_X;
}
if (notesec)
{
elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | exec;
if (exec && info->relocatable
&& notesec->output_section != bfd_abs_section_ptr)
notesec->output_section->flags |= SEC_CODE;
}
}
elf_hash_table (info)->init_got_refcount
= elf_hash_table (info)->init_got_offset;
elf_hash_table (info)->init_plt_refcount
= elf_hash_table (info)->init_plt_offset;
bed = get_elf_backend_data (output_bfd);
if (bed->elf_backend_always_size_sections
&& ! (*bed->elf_backend_always_size_sections) (output_bfd, info))
return FALSE;
dynobj = elf_hash_table (info)->dynobj;
if (dynobj == NULL)
return TRUE;
if (! _bfd_elf_maybe_strip_eh_frame_hdr (info))
return FALSE;
if (elf_hash_table (info)->dynamic_sections_created)
{
struct elf_info_failed eif;
struct elf_link_hash_entry *h;
asection *dynstr;
struct bfd_elf_version_tree *t;
struct bfd_elf_version_expr *d;
asection *s;
bfd_boolean all_defined;
*sinterpptr = bfd_get_section_by_name (dynobj, ".interp");
BFD_ASSERT (*sinterpptr != NULL || !info->executable);
if (soname != NULL)
{
soname_indx = _bfd_elf_strtab_add (elf_hash_table (info)->dynstr,
soname, TRUE);
if (soname_indx == (bfd_size_type) -1
|| !_bfd_elf_add_dynamic_entry (info, DT_SONAME, soname_indx))
return FALSE;
}
if (info->symbolic)
{
if (!_bfd_elf_add_dynamic_entry (info, DT_SYMBOLIC, 0))
return FALSE;
info->flags |= DF_SYMBOLIC;
}
if (rpath != NULL)
{
bfd_size_type indx;
indx = _bfd_elf_strtab_add (elf_hash_table (info)->dynstr, rpath,
TRUE);
if (indx == (bfd_size_type) -1
|| !_bfd_elf_add_dynamic_entry (info, DT_RPATH, indx))
return FALSE;
if (info->new_dtags)
{
_bfd_elf_strtab_addref (elf_hash_table (info)->dynstr, indx);
if (!_bfd_elf_add_dynamic_entry (info, DT_RUNPATH, indx))
return FALSE;
}
}
if (filter_shlib != NULL)
{
bfd_size_type indx;
indx = _bfd_elf_strtab_add (elf_hash_table (info)->dynstr,
filter_shlib, TRUE);
if (indx == (bfd_size_type) -1
|| !_bfd_elf_add_dynamic_entry (info, DT_FILTER, indx))
return FALSE;
}
if (auxiliary_filters != NULL)
{
const char * const *p;
for (p = auxiliary_filters; *p != NULL; p++)
{
bfd_size_type indx;
indx = _bfd_elf_strtab_add (elf_hash_table (info)->dynstr,
*p, TRUE);
if (indx == (bfd_size_type) -1
|| !_bfd_elf_add_dynamic_entry (info, DT_AUXILIARY, indx))
return FALSE;
}
}
eif.info = info;
eif.verdefs = verdefs;
eif.failed = FALSE;
if (info->export_dynamic)
{
elf_link_hash_traverse (elf_hash_table (info),
_bfd_elf_export_symbol,
&eif);
if (eif.failed)
return FALSE;
}
for (t = verdefs; t != NULL; t = t->next)
for (d = t->globals.list; d != NULL; d = d->next)
if (!d->symver && d->symbol)
{
const char *verstr, *name;
size_t namelen, verlen, newlen;
char *newname, *p;
struct elf_link_hash_entry *newh;
name = d->symbol;
namelen = strlen (name);
verstr = t->name;
verlen = strlen (verstr);
newlen = namelen + verlen + 3;
newname = bfd_malloc (newlen);
if (newname == NULL)
return FALSE;
memcpy (newname, name, namelen);
p = newname + namelen;
*p++ = ELF_VER_CHR;
memcpy (p, verstr, verlen + 1);
newh = elf_link_hash_lookup (elf_hash_table (info),
newname, FALSE, FALSE,
FALSE);
if (newh == NULL
|| (newh->root.type != bfd_link_hash_defined
&& newh->root.type != bfd_link_hash_defweak))
{
*p++ = ELF_VER_CHR;
memcpy (p, verstr, verlen + 1);
newh = elf_link_hash_lookup (elf_hash_table (info),
newname, FALSE, FALSE,
FALSE);
}
free (newname);
if (newh != NULL
&& !newh->def_dynamic
&& (newh->root.type == bfd_link_hash_defined
|| newh->root.type == bfd_link_hash_defweak))
d->symver = 1;
}
asvinfo.output_bfd = output_bfd;
asvinfo.info = info;
asvinfo.verdefs = verdefs;
asvinfo.failed = FALSE;
elf_link_hash_traverse (elf_hash_table (info),
_bfd_elf_link_assign_sym_version,
&asvinfo);
if (asvinfo.failed)
return FALSE;
if (!info->allow_undefined_version)
{
all_defined = TRUE;
for (t = verdefs; t != NULL; t = t->next)
for (d = t->globals.list; d != NULL; d = d->next)
if (!d->symver && !d->script)
{
(*_bfd_error_handler)
(_("%s: undefined version: %s"),
d->pattern, t->name);
all_defined = FALSE;
}
if (!all_defined)
{
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
}
elf_link_hash_traverse (elf_hash_table (info),
_bfd_elf_adjust_dynamic_symbol,
&eif);
if (eif.failed)
return FALSE;
h = (info->init_function
? elf_link_hash_lookup (elf_hash_table (info),
info->init_function, FALSE,
FALSE, FALSE)
: NULL);
if (h != NULL
&& (h->ref_regular
|| h->def_regular))
{
if (!_bfd_elf_add_dynamic_entry (info, DT_INIT, 0))
return FALSE;
}
h = (info->fini_function
? elf_link_hash_lookup (elf_hash_table (info),
info->fini_function, FALSE,
FALSE, FALSE)
: NULL);
if (h != NULL
&& (h->ref_regular
|| h->def_regular))
{
if (!_bfd_elf_add_dynamic_entry (info, DT_FINI, 0))
return FALSE;
}
s = bfd_get_section_by_name (output_bfd, ".preinit_array");
if (s != NULL && s->linker_has_input)
{
if (! info->executable)
{
bfd *sub;
asection *o;
for (sub = info->input_bfds; sub != NULL;
sub = sub->link_next)
for (o = sub->sections; o != NULL; o = o->next)
if (elf_section_data (o)->this_hdr.sh_type
== SHT_PREINIT_ARRAY)
{
(*_bfd_error_handler)
(_("%B: .preinit_array section is not allowed in DSO"),
sub);
break;
}
bfd_set_error (bfd_error_nonrepresentable_section);
return FALSE;
}
if (!_bfd_elf_add_dynamic_entry (info, DT_PREINIT_ARRAY, 0)
|| !_bfd_elf_add_dynamic_entry (info, DT_PREINIT_ARRAYSZ, 0))
return FALSE;
}
s = bfd_get_section_by_name (output_bfd, ".init_array");
if (s != NULL && s->linker_has_input)
{
if (!_bfd_elf_add_dynamic_entry (info, DT_INIT_ARRAY, 0)
|| !_bfd_elf_add_dynamic_entry (info, DT_INIT_ARRAYSZ, 0))
return FALSE;
}
s = bfd_get_section_by_name (output_bfd, ".fini_array");
if (s != NULL && s->linker_has_input)
{
if (!_bfd_elf_add_dynamic_entry (info, DT_FINI_ARRAY, 0)
|| !_bfd_elf_add_dynamic_entry (info, DT_FINI_ARRAYSZ, 0))
return FALSE;
}
dynstr = bfd_get_section_by_name (dynobj, ".dynstr");
if (dynstr != NULL && dynstr->output_section != bfd_abs_section_ptr)
{
bfd_size_type strsize;
strsize = _bfd_elf_strtab_size (elf_hash_table (info)->dynstr);
if (!_bfd_elf_add_dynamic_entry (info, DT_HASH, 0)
|| !_bfd_elf_add_dynamic_entry (info, DT_STRTAB, 0)
|| !_bfd_elf_add_dynamic_entry (info, DT_SYMTAB, 0)
|| !_bfd_elf_add_dynamic_entry (info, DT_STRSZ, strsize)
|| !_bfd_elf_add_dynamic_entry (info, DT_SYMENT,
bed->s->sizeof_sym))
return FALSE;
}
}
if (bed->elf_backend_size_dynamic_sections
&& ! (*bed->elf_backend_size_dynamic_sections) (output_bfd, info))
return FALSE;
if (elf_hash_table (info)->dynamic_sections_created)
{
unsigned long section_sym_count;
asection *s;
s = bfd_get_section_by_name (dynobj, ".gnu.version_d");
BFD_ASSERT (s != NULL);
verdefs = asvinfo.verdefs;
if (verdefs != NULL && verdefs->vernum == 0)
verdefs = verdefs->next;
if (verdefs == NULL && !info->create_default_symver)
s->flags |= SEC_EXCLUDE;
else
{
unsigned int cdefs;
bfd_size_type size;
struct bfd_elf_version_tree *t;
bfd_byte *p;
Elf_Internal_Verdef def;
Elf_Internal_Verdaux defaux;
struct bfd_link_hash_entry *bh;
struct elf_link_hash_entry *h;
const char *name;
cdefs = 0;
size = 0;
size += sizeof (Elf_External_Verdef);
size += sizeof (Elf_External_Verdaux);
++cdefs;
if (info->create_default_symver)
{
size += sizeof (Elf_External_Verdef);
++cdefs;
}
for (t = verdefs; t != NULL; t = t->next)
{
struct bfd_elf_version_deps *n;
size += sizeof (Elf_External_Verdef);
size += sizeof (Elf_External_Verdaux);
++cdefs;
for (n = t->deps; n != NULL; n = n->next)
size += sizeof (Elf_External_Verdaux);
}
s->size = size;
s->contents = bfd_alloc (output_bfd, s->size);
if (s->contents == NULL && s->size != 0)
return FALSE;
p = s->contents;
def.vd_version = VER_DEF_CURRENT;
def.vd_flags = VER_FLG_BASE;
def.vd_ndx = 1;
def.vd_cnt = 1;
if (info->create_default_symver)
{
def.vd_aux = 2 * sizeof (Elf_External_Verdef);
def.vd_next = sizeof (Elf_External_Verdef);
}
else
{
def.vd_aux = sizeof (Elf_External_Verdef);
def.vd_next = (sizeof (Elf_External_Verdef)
+ sizeof (Elf_External_Verdaux));
}
if (soname_indx != (bfd_size_type) -1)
{
_bfd_elf_strtab_addref (elf_hash_table (info)->dynstr,
soname_indx);
def.vd_hash = bfd_elf_hash (soname);
defaux.vda_name = soname_indx;
name = soname;
}
else
{
bfd_size_type indx;
name = lbasename (output_bfd->filename);
def.vd_hash = bfd_elf_hash (name);
indx = _bfd_elf_strtab_add (elf_hash_table (info)->dynstr,
name, FALSE);
if (indx == (bfd_size_type) -1)
return FALSE;
defaux.vda_name = indx;
}
defaux.vda_next = 0;
_bfd_elf_swap_verdef_out (output_bfd, &def,
(Elf_External_Verdef *) p);
p += sizeof (Elf_External_Verdef);
if (info->create_default_symver)
{
bh = NULL;
if (! (_bfd_generic_link_add_one_symbol
(info, dynobj, name, BSF_GLOBAL, bfd_abs_section_ptr,
0, NULL, FALSE,
get_elf_backend_data (dynobj)->collect, &bh)))
return FALSE;
h = (struct elf_link_hash_entry *) bh;
h->non_elf = 0;
h->def_regular = 1;
h->type = STT_OBJECT;
h->verinfo.vertree = NULL;
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
def.vd_flags = 0;
def.vd_ndx = 2;
def.vd_aux = sizeof (Elf_External_Verdef);
if (verdefs)
def.vd_next = (sizeof (Elf_External_Verdef)
+ sizeof (Elf_External_Verdaux));
else
def.vd_next = 0;
_bfd_elf_swap_verdef_out (output_bfd, &def,
(Elf_External_Verdef *) p);
p += sizeof (Elf_External_Verdef);
}
_bfd_elf_swap_verdaux_out (output_bfd, &defaux,
(Elf_External_Verdaux *) p);
p += sizeof (Elf_External_Verdaux);
for (t = verdefs; t != NULL; t = t->next)
{
unsigned int cdeps;
struct bfd_elf_version_deps *n;
cdeps = 0;
for (n = t->deps; n != NULL; n = n->next)
++cdeps;
bh = NULL;
if (! (_bfd_generic_link_add_one_symbol
(info, dynobj, t->name, BSF_GLOBAL, bfd_abs_section_ptr,
0, NULL, FALSE,
get_elf_backend_data (dynobj)->collect, &bh)))
return FALSE;
h = (struct elf_link_hash_entry *) bh;
h->non_elf = 0;
h->def_regular = 1;
h->type = STT_OBJECT;
h->verinfo.vertree = t;
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
def.vd_version = VER_DEF_CURRENT;
def.vd_flags = 0;
if (t->globals.list == NULL
&& t->locals.list == NULL
&& ! t->used)
def.vd_flags |= VER_FLG_WEAK;
def.vd_ndx = t->vernum + (info->create_default_symver ? 2 : 1);
def.vd_cnt = cdeps + 1;
def.vd_hash = bfd_elf_hash (t->name);
def.vd_aux = sizeof (Elf_External_Verdef);
def.vd_next = 0;
if (t->next != NULL)
def.vd_next = (sizeof (Elf_External_Verdef)
+ (cdeps + 1) * sizeof (Elf_External_Verdaux));
_bfd_elf_swap_verdef_out (output_bfd, &def,
(Elf_External_Verdef *) p);
p += sizeof (Elf_External_Verdef);
defaux.vda_name = h->dynstr_index;
_bfd_elf_strtab_addref (elf_hash_table (info)->dynstr,
h->dynstr_index);
defaux.vda_next = 0;
if (t->deps != NULL)
defaux.vda_next = sizeof (Elf_External_Verdaux);
t->name_indx = defaux.vda_name;
_bfd_elf_swap_verdaux_out (output_bfd, &defaux,
(Elf_External_Verdaux *) p);
p += sizeof (Elf_External_Verdaux);
for (n = t->deps; n != NULL; n = n->next)
{
if (n->version_needed == NULL)
{
defaux.vda_name = 0;
}
else
{
defaux.vda_name = n->version_needed->name_indx;
_bfd_elf_strtab_addref (elf_hash_table (info)->dynstr,
defaux.vda_name);
}
if (n->next == NULL)
defaux.vda_next = 0;
else
defaux.vda_next = sizeof (Elf_External_Verdaux);
_bfd_elf_swap_verdaux_out (output_bfd, &defaux,
(Elf_External_Verdaux *) p);
p += sizeof (Elf_External_Verdaux);
}
}
if (!_bfd_elf_add_dynamic_entry (info, DT_VERDEF, 0)
|| !_bfd_elf_add_dynamic_entry (info, DT_VERDEFNUM, cdefs))
return FALSE;
elf_tdata (output_bfd)->cverdefs = cdefs;
}
if ((info->new_dtags && info->flags) || (info->flags & DF_STATIC_TLS))
{
if (!_bfd_elf_add_dynamic_entry (info, DT_FLAGS, info->flags))
return FALSE;
}
else if (info->flags & DF_BIND_NOW)
{
if (!_bfd_elf_add_dynamic_entry (info, DT_BIND_NOW, 0))
return FALSE;
}
if (info->flags_1)
{
if (info->executable)
info->flags_1 &= ~ (DF_1_INITFIRST
| DF_1_NODELETE
| DF_1_NOOPEN);
if (!_bfd_elf_add_dynamic_entry (info, DT_FLAGS_1, info->flags_1))
return FALSE;
}
s = bfd_get_section_by_name (dynobj, ".gnu.version_r");
BFD_ASSERT (s != NULL);
{
struct elf_find_verdep_info sinfo;
sinfo.output_bfd = output_bfd;
sinfo.info = info;
sinfo.vers = elf_tdata (output_bfd)->cverdefs;
if (sinfo.vers == 0)
sinfo.vers = 1;
sinfo.failed = FALSE;
elf_link_hash_traverse (elf_hash_table (info),
_bfd_elf_link_find_version_dependencies,
&sinfo);
if (elf_tdata (output_bfd)->verref == NULL)
s->flags |= SEC_EXCLUDE;
else
{
Elf_Internal_Verneed *t;
unsigned int size;
unsigned int crefs;
bfd_byte *p;
size = 0;
crefs = 0;
for (t = elf_tdata (output_bfd)->verref;
t != NULL;
t = t->vn_nextref)
{
Elf_Internal_Vernaux *a;
size += sizeof (Elf_External_Verneed);
++crefs;
for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
size += sizeof (Elf_External_Vernaux);
}
s->size = size;
s->contents = bfd_alloc (output_bfd, s->size);
if (s->contents == NULL)
return FALSE;
p = s->contents;
for (t = elf_tdata (output_bfd)->verref;
t != NULL;
t = t->vn_nextref)
{
unsigned int caux;
Elf_Internal_Vernaux *a;
bfd_size_type indx;
caux = 0;
for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
++caux;
t->vn_version = VER_NEED_CURRENT;
t->vn_cnt = caux;
indx = _bfd_elf_strtab_add (elf_hash_table (info)->dynstr,
elf_dt_name (t->vn_bfd) != NULL
? elf_dt_name (t->vn_bfd)
: lbasename (t->vn_bfd->filename),
FALSE);
if (indx == (bfd_size_type) -1)
return FALSE;
t->vn_file = indx;
t->vn_aux = sizeof (Elf_External_Verneed);
if (t->vn_nextref == NULL)
t->vn_next = 0;
else
t->vn_next = (sizeof (Elf_External_Verneed)
+ caux * sizeof (Elf_External_Vernaux));
_bfd_elf_swap_verneed_out (output_bfd, t,
(Elf_External_Verneed *) p);
p += sizeof (Elf_External_Verneed);
for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
{
a->vna_hash = bfd_elf_hash (a->vna_nodename);
indx = _bfd_elf_strtab_add (elf_hash_table (info)->dynstr,
a->vna_nodename, FALSE);
if (indx == (bfd_size_type) -1)
return FALSE;
a->vna_name = indx;
if (a->vna_nextptr == NULL)
a->vna_next = 0;
else
a->vna_next = sizeof (Elf_External_Vernaux);
_bfd_elf_swap_vernaux_out (output_bfd, a,
(Elf_External_Vernaux *) p);
p += sizeof (Elf_External_Vernaux);
}
}
if (!_bfd_elf_add_dynamic_entry (info, DT_VERNEED, 0)
|| !_bfd_elf_add_dynamic_entry (info, DT_VERNEEDNUM, crefs))
return FALSE;
elf_tdata (output_bfd)->cverrefs = crefs;
}
}
if ((elf_tdata (output_bfd)->cverrefs == 0
&& elf_tdata (output_bfd)->cverdefs == 0)
|| _bfd_elf_link_renumber_dynsyms (output_bfd, info,
§ion_sym_count) == 0)
{
s = bfd_get_section_by_name (dynobj, ".gnu.version");
s->flags |= SEC_EXCLUDE;
}
}
return TRUE;
}
bfd_boolean
bfd_elf_size_dynsym_hash_dynstr (bfd *output_bfd, struct bfd_link_info *info)
{
if (!is_elf_hash_table (info->hash))
return TRUE;
if (elf_hash_table (info)->dynamic_sections_created)
{
bfd *dynobj;
const struct elf_backend_data *bed;
asection *s;
bfd_size_type dynsymcount;
unsigned long section_sym_count;
size_t bucketcount = 0;
size_t hash_entry_size;
unsigned int dtagcount;
dynobj = elf_hash_table (info)->dynobj;
dynsymcount = _bfd_elf_link_renumber_dynsyms (output_bfd, info,
§ion_sym_count);
s = bfd_get_section_by_name (dynobj, ".gnu.version");
BFD_ASSERT (s != NULL);
if (dynsymcount != 0
&& (s->flags & SEC_EXCLUDE) == 0)
{
s->size = dynsymcount * sizeof (Elf_External_Versym);
s->contents = bfd_zalloc (output_bfd, s->size);
if (s->contents == NULL)
return FALSE;
if (!_bfd_elf_add_dynamic_entry (info, DT_VERSYM, 0))
return FALSE;
}
s = bfd_get_section_by_name (dynobj, ".dynsym");
BFD_ASSERT (s != NULL);
bed = get_elf_backend_data (output_bfd);
s->size = dynsymcount * bed->s->sizeof_sym;
if (dynsymcount != 0)
{
s->contents = bfd_alloc (output_bfd, s->size);
if (s->contents == NULL)
return FALSE;
++section_sym_count;
memset (s->contents, 0, section_sym_count * bed->s->sizeof_sym);
}
bucketcount = compute_bucket_count (info);
s = bfd_get_section_by_name (dynobj, ".hash");
BFD_ASSERT (s != NULL);
hash_entry_size = elf_section_data (s)->this_hdr.sh_entsize;
s->size = ((2 + bucketcount + dynsymcount) * hash_entry_size);
s->contents = bfd_zalloc (output_bfd, s->size);
if (s->contents == NULL)
return FALSE;
bfd_put (8 * hash_entry_size, output_bfd, bucketcount, s->contents);
bfd_put (8 * hash_entry_size, output_bfd, dynsymcount,
s->contents + hash_entry_size);
elf_hash_table (info)->bucketcount = bucketcount;
s = bfd_get_section_by_name (dynobj, ".dynstr");
BFD_ASSERT (s != NULL);
elf_finalize_dynstr (output_bfd, info);
s->size = _bfd_elf_strtab_size (elf_hash_table (info)->dynstr);
for (dtagcount = 0; dtagcount <= info->spare_dynamic_tags; ++dtagcount)
if (!_bfd_elf_add_dynamic_entry (info, DT_NULL, 0))
return FALSE;
}
return TRUE;
}
struct elf_final_link_info
{
struct bfd_link_info *info;
bfd *output_bfd;
struct bfd_strtab_hash *symstrtab;
asection *dynsym_sec;
asection *hash_sec;
asection *symver_sec;
bfd_byte *contents;
void *external_relocs;
Elf_Internal_Rela *internal_relocs;
bfd_byte *external_syms;
Elf_External_Sym_Shndx *locsym_shndx;
Elf_Internal_Sym *internal_syms;
long *indices;
asection **sections;
bfd_byte *symbuf;
Elf_External_Sym_Shndx *symshndxbuf;
size_t symbuf_count;
size_t symbuf_size;
size_t shndxbuf_size;
};
struct elf_outext_info
{
bfd_boolean failed;
bfd_boolean localsyms;
struct elf_final_link_info *finfo;
};
static void
elf_link_adjust_relocs (bfd *abfd,
Elf_Internal_Shdr *rel_hdr,
unsigned int count,
struct elf_link_hash_entry **rel_hash)
{
unsigned int i;
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
bfd_byte *erela;
void (*swap_in) (bfd *, const bfd_byte *, Elf_Internal_Rela *);
void (*swap_out) (bfd *, const Elf_Internal_Rela *, bfd_byte *);
bfd_vma r_type_mask;
int r_sym_shift;
if (rel_hdr->sh_entsize == bed->s->sizeof_rel)
{
swap_in = bed->s->swap_reloc_in;
swap_out = bed->s->swap_reloc_out;
}
else if (rel_hdr->sh_entsize == bed->s->sizeof_rela)
{
swap_in = bed->s->swap_reloca_in;
swap_out = bed->s->swap_reloca_out;
}
else
abort ();
if (bed->s->int_rels_per_ext_rel > MAX_INT_RELS_PER_EXT_REL)
abort ();
if (bed->s->arch_size == 32)
{
r_type_mask = 0xff;
r_sym_shift = 8;
}
else
{
r_type_mask = 0xffffffff;
r_sym_shift = 32;
}
erela = rel_hdr->contents;
for (i = 0; i < count; i++, rel_hash++, erela += rel_hdr->sh_entsize)
{
Elf_Internal_Rela irela[MAX_INT_RELS_PER_EXT_REL];
unsigned int j;
if (*rel_hash == NULL)
continue;
BFD_ASSERT ((*rel_hash)->indx >= 0);
(*swap_in) (abfd, erela, irela);
for (j = 0; j < bed->s->int_rels_per_ext_rel; j++)
irela[j].r_info = ((bfd_vma) (*rel_hash)->indx << r_sym_shift
| (irela[j].r_info & r_type_mask));
(*swap_out) (abfd, irela, erela);
}
}
struct elf_link_sort_rela
{
union {
bfd_vma offset;
bfd_vma sym_mask;
} u;
enum elf_reloc_type_class type;
Elf_Internal_Rela rela[1];
};
static int
elf_link_sort_cmp1 (const void *A, const void *B)
{
const struct elf_link_sort_rela *a = A;
const struct elf_link_sort_rela *b = B;
int relativea, relativeb;
relativea = a->type == reloc_class_relative;
relativeb = b->type == reloc_class_relative;
if (relativea < relativeb)
return 1;
if (relativea > relativeb)
return -1;
if ((a->rela->r_info & a->u.sym_mask) < (b->rela->r_info & b->u.sym_mask))
return -1;
if ((a->rela->r_info & a->u.sym_mask) > (b->rela->r_info & b->u.sym_mask))
return 1;
if (a->rela->r_offset < b->rela->r_offset)
return -1;
if (a->rela->r_offset > b->rela->r_offset)
return 1;
return 0;
}
static int
elf_link_sort_cmp2 (const void *A, const void *B)
{
const struct elf_link_sort_rela *a = A;
const struct elf_link_sort_rela *b = B;
int copya, copyb;
if (a->u.offset < b->u.offset)
return -1;
if (a->u.offset > b->u.offset)
return 1;
copya = (a->type == reloc_class_copy) * 2 + (a->type == reloc_class_plt);
copyb = (b->type == reloc_class_copy) * 2 + (b->type == reloc_class_plt);
if (copya < copyb)
return -1;
if (copya > copyb)
return 1;
if (a->rela->r_offset < b->rela->r_offset)
return -1;
if (a->rela->r_offset > b->rela->r_offset)
return 1;
return 0;
}
static size_t
elf_link_sort_relocs (bfd *abfd, struct bfd_link_info *info, asection **psec)
{
asection *reldyn;
bfd_size_type count, size;
size_t i, ret, sort_elt, ext_size;
bfd_byte *sort, *s_non_relative, *p;
struct elf_link_sort_rela *sq;
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
int i2e = bed->s->int_rels_per_ext_rel;
void (*swap_in) (bfd *, const bfd_byte *, Elf_Internal_Rela *);
void (*swap_out) (bfd *, const Elf_Internal_Rela *, bfd_byte *);
struct bfd_link_order *lo;
bfd_vma r_sym_mask;
reldyn = bfd_get_section_by_name (abfd, ".rela.dyn");
if (reldyn == NULL || reldyn->size == 0)
{
reldyn = bfd_get_section_by_name (abfd, ".rel.dyn");
if (reldyn == NULL || reldyn->size == 0)
return 0;
ext_size = bed->s->sizeof_rel;
swap_in = bed->s->swap_reloc_in;
swap_out = bed->s->swap_reloc_out;
}
else
{
ext_size = bed->s->sizeof_rela;
swap_in = bed->s->swap_reloca_in;
swap_out = bed->s->swap_reloca_out;
}
count = reldyn->size / ext_size;
size = 0;
for (lo = reldyn->map_head.link_order; lo != NULL; lo = lo->next)
if (lo->type == bfd_indirect_link_order)
{
asection *o = lo->u.indirect.section;
size += o->size;
}
if (size != reldyn->size)
return 0;
sort_elt = (sizeof (struct elf_link_sort_rela)
+ (i2e - 1) * sizeof (Elf_Internal_Rela));
sort = bfd_zmalloc (sort_elt * count);
if (sort == NULL)
{
(*info->callbacks->warning)
(info, _("Not enough memory to sort relocations"), 0, abfd, 0, 0);
return 0;
}
if (bed->s->arch_size == 32)
r_sym_mask = ~(bfd_vma) 0xff;
else
r_sym_mask = ~(bfd_vma) 0xffffffff;
for (lo = reldyn->map_head.link_order; lo != NULL; lo = lo->next)
if (lo->type == bfd_indirect_link_order)
{
bfd_byte *erel, *erelend;
asection *o = lo->u.indirect.section;
if (o->contents == NULL && o->size != 0)
{
free (sort);
return 0;
}
erel = o->contents;
erelend = o->contents + o->size;
p = sort + o->output_offset / ext_size * sort_elt;
while (erel < erelend)
{
struct elf_link_sort_rela *s = (struct elf_link_sort_rela *) p;
(*swap_in) (abfd, erel, s->rela);
s->type = (*bed->elf_backend_reloc_type_class) (s->rela);
s->u.sym_mask = r_sym_mask;
p += sort_elt;
erel += ext_size;
}
}
qsort (sort, count, sort_elt, elf_link_sort_cmp1);
for (i = 0, p = sort; i < count; i++, p += sort_elt)
{
struct elf_link_sort_rela *s = (struct elf_link_sort_rela *) p;
if (s->type != reloc_class_relative)
break;
}
ret = i;
s_non_relative = p;
sq = (struct elf_link_sort_rela *) s_non_relative;
for (; i < count; i++, p += sort_elt)
{
struct elf_link_sort_rela *sp = (struct elf_link_sort_rela *) p;
if (((sp->rela->r_info ^ sq->rela->r_info) & r_sym_mask) != 0)
sq = sp;
sp->u.offset = sq->rela->r_offset;
}
qsort (s_non_relative, count - ret, sort_elt, elf_link_sort_cmp2);
for (lo = reldyn->map_head.link_order; lo != NULL; lo = lo->next)
if (lo->type == bfd_indirect_link_order)
{
bfd_byte *erel, *erelend;
asection *o = lo->u.indirect.section;
erel = o->contents;
erelend = o->contents + o->size;
p = sort + o->output_offset / ext_size * sort_elt;
while (erel < erelend)
{
struct elf_link_sort_rela *s = (struct elf_link_sort_rela *) p;
(*swap_out) (abfd, s->rela, erel);
p += sort_elt;
erel += ext_size;
}
}
free (sort);
*psec = reldyn;
return ret;
}
static bfd_boolean
elf_link_flush_output_syms (struct elf_final_link_info *finfo,
const struct elf_backend_data *bed)
{
if (finfo->symbuf_count > 0)
{
Elf_Internal_Shdr *hdr;
file_ptr pos;
bfd_size_type amt;
hdr = &elf_tdata (finfo->output_bfd)->symtab_hdr;
pos = hdr->sh_offset + hdr->sh_size;
amt = finfo->symbuf_count * bed->s->sizeof_sym;
if (bfd_seek (finfo->output_bfd, pos, SEEK_SET) != 0
|| bfd_bwrite (finfo->symbuf, amt, finfo->output_bfd) != amt)
return FALSE;
hdr->sh_size += amt;
finfo->symbuf_count = 0;
}
return TRUE;
}
static bfd_boolean
elf_link_output_sym (struct elf_final_link_info *finfo,
const char *name,
Elf_Internal_Sym *elfsym,
asection *input_sec,
struct elf_link_hash_entry *h)
{
bfd_byte *dest;
Elf_External_Sym_Shndx *destshndx;
bfd_boolean (*output_symbol_hook)
(struct bfd_link_info *, const char *, Elf_Internal_Sym *, asection *,
struct elf_link_hash_entry *);
const struct elf_backend_data *bed;
bed = get_elf_backend_data (finfo->output_bfd);
output_symbol_hook = bed->elf_backend_link_output_symbol_hook;
if (output_symbol_hook != NULL)
{
if (! (*output_symbol_hook) (finfo->info, name, elfsym, input_sec, h))
return FALSE;
}
if (name == NULL || *name == '\0')
elfsym->st_name = 0;
else if (input_sec->flags & SEC_EXCLUDE)
elfsym->st_name = 0;
else
{
elfsym->st_name = (unsigned long) _bfd_stringtab_add (finfo->symstrtab,
name, TRUE, FALSE);
if (elfsym->st_name == (unsigned long) -1)
return FALSE;
}
if (finfo->symbuf_count >= finfo->symbuf_size)
{
if (! elf_link_flush_output_syms (finfo, bed))
return FALSE;
}
dest = finfo->symbuf + finfo->symbuf_count * bed->s->sizeof_sym;
destshndx = finfo->symshndxbuf;
if (destshndx != NULL)
{
if (bfd_get_symcount (finfo->output_bfd) >= finfo->shndxbuf_size)
{
bfd_size_type amt;
amt = finfo->shndxbuf_size * sizeof (Elf_External_Sym_Shndx);
finfo->symshndxbuf = destshndx = bfd_realloc (destshndx, amt * 2);
if (destshndx == NULL)
return FALSE;
memset ((char *) destshndx + amt, 0, amt);
finfo->shndxbuf_size *= 2;
}
destshndx += bfd_get_symcount (finfo->output_bfd);
}
bed->s->swap_symbol_out (finfo->output_bfd, elfsym, dest, destshndx);
finfo->symbuf_count += 1;
bfd_get_symcount (finfo->output_bfd) += 1;
return TRUE;
}
static bfd_boolean
elf_link_check_versioned_symbol (struct bfd_link_info *info,
const struct elf_backend_data *bed,
struct elf_link_hash_entry *h)
{
bfd *abfd;
struct elf_link_loaded_list *loaded;
if (!is_elf_hash_table (info->hash))
return FALSE;
switch (h->root.type)
{
default:
abfd = NULL;
break;
case bfd_link_hash_undefined:
case bfd_link_hash_undefweak:
abfd = h->root.u.undef.abfd;
if ((abfd->flags & DYNAMIC) == 0
|| (elf_dyn_lib_class (abfd) & DYN_DT_NEEDED) == 0)
return FALSE;
break;
case bfd_link_hash_defined:
case bfd_link_hash_defweak:
abfd = h->root.u.def.section->owner;
break;
case bfd_link_hash_common:
abfd = h->root.u.c.p->section->owner;
break;
}
BFD_ASSERT (abfd != NULL);
for (loaded = elf_hash_table (info)->loaded;
loaded != NULL;
loaded = loaded->next)
{
bfd *input;
Elf_Internal_Shdr *hdr;
bfd_size_type symcount;
bfd_size_type extsymcount;
bfd_size_type extsymoff;
Elf_Internal_Shdr *versymhdr;
Elf_Internal_Sym *isym;
Elf_Internal_Sym *isymend;
Elf_Internal_Sym *isymbuf;
Elf_External_Versym *ever;
Elf_External_Versym *extversym;
input = loaded->abfd;
if (input == abfd
|| (input->flags & DYNAMIC) == 0
|| elf_dynversym (input) == 0)
continue;
hdr = &elf_tdata (input)->dynsymtab_hdr;
symcount = hdr->sh_size / bed->s->sizeof_sym;
if (elf_bad_symtab (input))
{
extsymcount = symcount;
extsymoff = 0;
}
else
{
extsymcount = symcount - hdr->sh_info;
extsymoff = hdr->sh_info;
}
if (extsymcount == 0)
continue;
isymbuf = bfd_elf_get_elf_syms (input, hdr, extsymcount, extsymoff,
NULL, NULL, NULL);
if (isymbuf == NULL)
return FALSE;
versymhdr = &elf_tdata (input)->dynversym_hdr;
extversym = bfd_malloc (versymhdr->sh_size);
if (extversym == NULL)
goto error_ret;
if (bfd_seek (input, versymhdr->sh_offset, SEEK_SET) != 0
|| (bfd_bread (extversym, versymhdr->sh_size, input)
!= versymhdr->sh_size))
{
free (extversym);
error_ret:
free (isymbuf);
return FALSE;
}
ever = extversym + extsymoff;
isymend = isymbuf + extsymcount;
for (isym = isymbuf; isym < isymend; isym++, ever++)
{
const char *name;
Elf_Internal_Versym iver;
unsigned short version_index;
if (ELF_ST_BIND (isym->st_info) == STB_LOCAL
|| isym->st_shndx == SHN_UNDEF)
continue;
name = bfd_elf_string_from_elf_section (input,
hdr->sh_link,
isym->st_name);
if (strcmp (name, h->root.root.string) != 0)
continue;
_bfd_elf_swap_versym_in (input, ever, &iver);
if ((iver.vs_vers & VERSYM_HIDDEN) == 0)
{
abort ();
}
version_index = iver.vs_vers & VERSYM_VERSION;
if (version_index == 1 || version_index == 2)
{
free (extversym);
free (isymbuf);
return TRUE;
}
}
free (extversym);
free (isymbuf);
}
return FALSE;
}
static bfd_boolean
elf_link_output_extsym (struct elf_link_hash_entry *h, void *data)
{
struct elf_outext_info *eoinfo = data;
struct elf_final_link_info *finfo = eoinfo->finfo;
bfd_boolean strip;
Elf_Internal_Sym sym;
asection *input_sec;
const struct elf_backend_data *bed;
if (h->root.type == bfd_link_hash_warning)
{
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if (h->root.type == bfd_link_hash_new)
return TRUE;
}
if (eoinfo->localsyms)
{
if (!h->forced_local)
return TRUE;
}
else
{
if (h->forced_local)
return TRUE;
}
bed = get_elf_backend_data (finfo->output_bfd);
if (h->root.type == bfd_link_hash_undefined
&& h->ref_dynamic
&& !h->ref_regular
&& ! elf_link_check_versioned_symbol (finfo->info, bed, h)
&& finfo->info->unresolved_syms_in_shared_libs != RM_IGNORE)
{
if (! ((*finfo->info->callbacks->undefined_symbol)
(finfo->info, h->root.root.string, h->root.u.undef.abfd,
NULL, 0, finfo->info->unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)))
{
eoinfo->failed = TRUE;
return FALSE;
}
}
if (! finfo->info->relocatable
&& (! finfo->info->shared)
&& h->forced_local
&& h->ref_dynamic
&& !h->dynamic_def
&& !h->dynamic_weak
&& ! elf_link_check_versioned_symbol (finfo->info, bed, h))
{
(*_bfd_error_handler)
(_("%B: %s symbol `%s' in %B is referenced by DSO"),
finfo->output_bfd,
h->root.u.def.section == bfd_abs_section_ptr
? finfo->output_bfd : h->root.u.def.section->owner,
ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
? "internal"
: ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
? "hidden" : "local",
h->root.root.string);
eoinfo->failed = TRUE;
return FALSE;
}
if (h->indx == -2)
strip = FALSE;
else if ((h->def_dynamic
|| h->ref_dynamic
|| h->root.type == bfd_link_hash_new)
&& !h->def_regular
&& !h->ref_regular)
strip = TRUE;
else if (finfo->info->strip == strip_all)
strip = TRUE;
else if (finfo->info->strip == strip_some
&& bfd_hash_lookup (finfo->info->keep_hash,
h->root.root.string, FALSE, FALSE) == NULL)
strip = TRUE;
else if (finfo->info->strip_discarded
&& (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
&& elf_discarded_section (h->root.u.def.section))
strip = TRUE;
else
strip = FALSE;
if (strip
&& h->dynindx == -1
&& !h->forced_local)
return TRUE;
sym.st_value = 0;
sym.st_size = h->size;
sym.st_other = h->other;
if (h->forced_local)
sym.st_info = ELF_ST_INFO (STB_LOCAL, h->type);
else if (h->root.type == bfd_link_hash_undefweak
|| h->root.type == bfd_link_hash_defweak)
sym.st_info = ELF_ST_INFO (STB_WEAK, h->type);
else
sym.st_info = ELF_ST_INFO (STB_GLOBAL, h->type);
switch (h->root.type)
{
default:
case bfd_link_hash_new:
case bfd_link_hash_warning:
abort ();
return FALSE;
case bfd_link_hash_undefined:
case bfd_link_hash_undefweak:
input_sec = bfd_und_section_ptr;
sym.st_shndx = SHN_UNDEF;
break;
case bfd_link_hash_defined:
case bfd_link_hash_defweak:
{
input_sec = h->root.u.def.section;
if (input_sec->output_section != NULL)
{
sym.st_shndx =
_bfd_elf_section_from_bfd_section (finfo->output_bfd,
input_sec->output_section);
if (sym.st_shndx == SHN_BAD)
{
(*_bfd_error_handler)
(_("%B: could not find output section %A for input section %A"),
finfo->output_bfd, input_sec->output_section, input_sec);
eoinfo->failed = TRUE;
return FALSE;
}
sym.st_value = h->root.u.def.value + input_sec->output_offset;
if (! finfo->info->relocatable)
{
sym.st_value += input_sec->output_section->vma;
if (h->type == STT_TLS)
{
BFD_ASSERT (elf_hash_table (finfo->info)->tls_sec != NULL);
sym.st_value -= elf_hash_table (finfo->info)->tls_sec->vma;
}
}
}
else
{
BFD_ASSERT (input_sec->owner == NULL
|| (input_sec->owner->flags & DYNAMIC) != 0);
sym.st_shndx = SHN_UNDEF;
input_sec = bfd_und_section_ptr;
}
}
break;
case bfd_link_hash_common:
input_sec = h->root.u.c.p->section;
sym.st_shndx = bed->common_section_index (input_sec);
sym.st_value = 1 << h->root.u.c.p->alignment_power;
break;
case bfd_link_hash_indirect:
return TRUE;
}
if ((h->dynindx != -1
|| h->forced_local)
&& ((finfo->info->shared
&& (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak))
|| !h->forced_local)
&& elf_hash_table (finfo->info)->dynamic_sections_created)
{
if (! ((*bed->elf_backend_finish_dynamic_symbol)
(finfo->output_bfd, finfo->info, h, &sym)))
{
eoinfo->failed = TRUE;
return FALSE;
}
}
if (sym.st_shndx == SHN_UNDEF
&& h->ref_regular
&& (ELF_ST_BIND (sym.st_info) == STB_GLOBAL
|| ELF_ST_BIND (sym.st_info) == STB_WEAK))
{
int bindtype;
if (h->ref_regular_nonweak)
bindtype = STB_GLOBAL;
else
bindtype = STB_WEAK;
sym.st_info = ELF_ST_INFO (bindtype, ELF_ST_TYPE (sym.st_info));
}
if (! finfo->info->relocatable
&& ELF_ST_VISIBILITY (sym.st_other) != STV_DEFAULT
&& ELF_ST_BIND (sym.st_info) != STB_WEAK
&& h->root.type == bfd_link_hash_undefined
&& !h->def_regular)
{
(*_bfd_error_handler)
(_("%B: %s symbol `%s' isn't defined"),
finfo->output_bfd,
ELF_ST_VISIBILITY (sym.st_other) == STV_PROTECTED
? "protected"
: ELF_ST_VISIBILITY (sym.st_other) == STV_INTERNAL
? "internal" : "hidden",
h->root.root.string);
eoinfo->failed = TRUE;
return FALSE;
}
if (h->dynindx != -1
&& elf_hash_table (finfo->info)->dynamic_sections_created)
{
size_t bucketcount;
size_t bucket;
size_t hash_entry_size;
bfd_byte *bucketpos;
bfd_vma chain;
bfd_byte *esym;
sym.st_name = h->dynstr_index;
esym = finfo->dynsym_sec->contents + h->dynindx * bed->s->sizeof_sym;
bed->s->swap_symbol_out (finfo->output_bfd, &sym, esym, 0);
bucketcount = elf_hash_table (finfo->info)->bucketcount;
bucket = h->u.elf_hash_value % bucketcount;
hash_entry_size
= elf_section_data (finfo->hash_sec)->this_hdr.sh_entsize;
bucketpos = ((bfd_byte *) finfo->hash_sec->contents
+ (bucket + 2) * hash_entry_size);
chain = bfd_get (8 * hash_entry_size, finfo->output_bfd, bucketpos);
bfd_put (8 * hash_entry_size, finfo->output_bfd, h->dynindx, bucketpos);
bfd_put (8 * hash_entry_size, finfo->output_bfd, chain,
((bfd_byte *) finfo->hash_sec->contents
+ (bucketcount + 2 + h->dynindx) * hash_entry_size));
if (finfo->symver_sec != NULL && finfo->symver_sec->contents != NULL)
{
Elf_Internal_Versym iversym;
Elf_External_Versym *eversym;
if (!h->def_regular)
{
if (h->verinfo.verdef == NULL)
iversym.vs_vers = 0;
else
iversym.vs_vers = h->verinfo.verdef->vd_exp_refno + 1;
}
else
{
if (h->verinfo.vertree == NULL)
iversym.vs_vers = 1;
else
iversym.vs_vers = h->verinfo.vertree->vernum + 1;
if (finfo->info->create_default_symver)
iversym.vs_vers++;
}
if (h->hidden)
iversym.vs_vers |= VERSYM_HIDDEN;
eversym = (Elf_External_Versym *) finfo->symver_sec->contents;
eversym += h->dynindx;
_bfd_elf_swap_versym_out (finfo->output_bfd, &iversym, eversym);
}
}
if (strip || (input_sec->flags & SEC_EXCLUDE) != 0)
return TRUE;
h->indx = bfd_get_symcount (finfo->output_bfd);
if (! elf_link_output_sym (finfo, h->root.root.string, &sym, input_sec, h))
{
eoinfo->failed = TRUE;
return FALSE;
}
return TRUE;
}
static bfd_boolean
elf_section_ignore_discarded_relocs (asection *sec)
{
const struct elf_backend_data *bed;
switch (sec->sec_info_type)
{
case ELF_INFO_TYPE_STABS:
case ELF_INFO_TYPE_EH_FRAME:
return TRUE;
default:
break;
}
bed = get_elf_backend_data (sec->owner);
if (bed->elf_backend_ignore_discarded_relocs != NULL
&& (*bed->elf_backend_ignore_discarded_relocs) (sec))
return TRUE;
return FALSE;
}
unsigned int
_bfd_elf_default_action_discarded (asection *sec)
{
if (sec->flags & SEC_DEBUGGING)
return PRETEND;
if (strcmp (".eh_frame", sec->name) == 0)
return 0;
if (strcmp (".gcc_except_table", sec->name) == 0)
return 0;
return COMPLAIN | PRETEND;
}
static asection *
match_group_member (asection *sec, asection *group)
{
asection *first = elf_next_in_group (group);
asection *s = first;
while (s != NULL)
{
if (bfd_elf_match_symbols_in_sections (s, sec))
return s;
if (s == first)
break;
}
return NULL;
}
asection *
_bfd_elf_check_kept_section (asection *sec)
{
asection *kept;
kept = sec->kept_section;
if (kept != NULL)
{
if (elf_sec_group (sec) != NULL)
kept = match_group_member (sec, kept);
if (kept != NULL && sec->size != kept->size)
kept = NULL;
}
return kept;
}
static bfd_boolean
elf_link_input_bfd (struct elf_final_link_info *finfo, bfd *input_bfd)
{
bfd_boolean (*relocate_section)
(bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **);
bfd *output_bfd;
Elf_Internal_Shdr *symtab_hdr;
size_t locsymcount;
size_t extsymoff;
Elf_Internal_Sym *isymbuf;
Elf_Internal_Sym *isym;
Elf_Internal_Sym *isymend;
long *pindex;
asection **ppsection;
asection *o;
const struct elf_backend_data *bed;
bfd_boolean emit_relocs;
struct elf_link_hash_entry **sym_hashes;
output_bfd = finfo->output_bfd;
bed = get_elf_backend_data (output_bfd);
relocate_section = bed->elf_backend_relocate_section;
if ((input_bfd->flags & DYNAMIC) != 0)
return TRUE;
emit_relocs = (finfo->info->relocatable
|| finfo->info->emitrelocations);
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
if (elf_bad_symtab (input_bfd))
{
locsymcount = symtab_hdr->sh_size / bed->s->sizeof_sym;
extsymoff = 0;
}
else
{
locsymcount = symtab_hdr->sh_info;
extsymoff = symtab_hdr->sh_info;
}
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
if (isymbuf == NULL && locsymcount != 0)
{
isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, locsymcount, 0,
finfo->internal_syms,
finfo->external_syms,
finfo->locsym_shndx);
if (isymbuf == NULL)
return FALSE;
}
isymend = isymbuf + locsymcount;
for (isym = isymbuf, pindex = finfo->indices, ppsection = finfo->sections;
isym < isymend;
isym++, pindex++, ppsection++)
{
asection *isec;
const char *name;
Elf_Internal_Sym osym;
*pindex = -1;
if (elf_bad_symtab (input_bfd))
{
if (ELF_ST_BIND (isym->st_info) != STB_LOCAL)
{
*ppsection = NULL;
continue;
}
}
if (isym->st_shndx == SHN_UNDEF)
isec = bfd_und_section_ptr;
else if (isym->st_shndx < SHN_LORESERVE
|| isym->st_shndx > SHN_HIRESERVE)
{
isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
if (isec
&& isec->sec_info_type == ELF_INFO_TYPE_MERGE
&& ELF_ST_TYPE (isym->st_info) != STT_SECTION)
isym->st_value =
_bfd_merged_section_offset (output_bfd, &isec,
elf_section_data (isec)->sec_info,
isym->st_value);
}
else if (isym->st_shndx == SHN_ABS)
isec = bfd_abs_section_ptr;
else if (isym->st_shndx == SHN_COMMON)
isec = bfd_com_section_ptr;
else
{
isec = NULL;
}
*ppsection = isec;
if (ppsection == finfo->sections)
continue;
if (ELF_ST_TYPE (isym->st_info) == STT_SECTION)
{
continue;
}
if (finfo->info->strip == strip_all)
continue;
if (finfo->info->discard == discard_all)
continue;
if ((isym->st_shndx < SHN_LORESERVE || isym->st_shndx > SHN_HIRESERVE)
&& (isec == NULL
|| (! isec->linker_mark && (isec->flags & SEC_HAS_CONTENTS) != 0)
|| (! finfo->info->relocatable
&& (isec->flags & SEC_EXCLUDE) != 0)))
continue;
if (bfd_section_removed_from_list (output_bfd, isec->output_section))
continue;
name = bfd_elf_string_from_elf_section (input_bfd, symtab_hdr->sh_link,
isym->st_name);
if (name == NULL)
return FALSE;
if ((finfo->info->strip == strip_some
&& (bfd_hash_lookup (finfo->info->keep_hash, name, FALSE, FALSE)
== NULL))
|| (((finfo->info->discard == discard_sec_merge
&& (isec->flags & SEC_MERGE) && ! finfo->info->relocatable)
|| finfo->info->discard == discard_l)
&& bfd_is_local_label_name (input_bfd, name)))
continue;
osym = *isym;
osym.st_shndx = _bfd_elf_section_from_bfd_section (output_bfd,
isec->output_section);
if (osym.st_shndx == SHN_BAD)
return FALSE;
*pindex = bfd_get_symcount (output_bfd);
osym.st_value += isec->output_offset;
if (! finfo->info->relocatable)
{
osym.st_value += isec->output_section->vma;
if (ELF_ST_TYPE (osym.st_info) == STT_TLS)
{
BFD_ASSERT (elf_hash_table (finfo->info)->tls_sec != NULL);
osym.st_value -= elf_hash_table (finfo->info)->tls_sec->vma;
}
}
if (! elf_link_output_sym (finfo, name, &osym, isec, NULL))
return FALSE;
}
sym_hashes = elf_sym_hashes (input_bfd);
for (o = input_bfd->sections; o != NULL; o = o->next)
{
bfd_byte *contents;
if (! o->linker_mark)
{
continue;
}
if ((o->flags & SEC_HAS_CONTENTS) == 0
|| (o->size == 0 && (o->flags & SEC_RELOC) == 0))
continue;
if ((o->flags & SEC_LINKER_CREATED) != 0)
{
continue;
}
if (elf_section_data (o)->this_hdr.contents != NULL)
contents = elf_section_data (o)->this_hdr.contents;
else
{
bfd_size_type amt = o->rawsize ? o->rawsize : o->size;
contents = finfo->contents;
if (! bfd_get_section_contents (input_bfd, o, contents, 0, amt))
return FALSE;
}
if ((o->flags & SEC_RELOC) != 0)
{
Elf_Internal_Rela *internal_relocs;
bfd_vma r_type_mask;
int r_sym_shift;
internal_relocs
= _bfd_elf_link_read_relocs (input_bfd, o, finfo->external_relocs,
finfo->internal_relocs, FALSE);
if (internal_relocs == NULL
&& o->reloc_count > 0)
return FALSE;
if (bed->s->arch_size == 32)
{
r_type_mask = 0xff;
r_sym_shift = 8;
}
else
{
r_type_mask = 0xffffffff;
r_sym_shift = 32;
}
if (!elf_section_ignore_discarded_relocs (o))
{
Elf_Internal_Rela *rel, *relend;
unsigned int action = (*bed->action_discarded) (o);
rel = internal_relocs;
relend = rel + o->reloc_count * bed->s->int_rels_per_ext_rel;
for ( ; rel < relend; rel++)
{
unsigned long r_symndx = rel->r_info >> r_sym_shift;
asection **ps, *sec;
struct elf_link_hash_entry *h = NULL;
const char *sym_name;
if (r_symndx == STN_UNDEF)
continue;
if (r_symndx >= locsymcount
|| (elf_bad_symtab (input_bfd)
&& finfo->sections[r_symndx] == NULL))
{
h = sym_hashes[r_symndx - extsymoff];
if (h == NULL)
{
char buffer [32];
sprintf_vma (buffer, rel->r_info);
(*_bfd_error_handler)
(_("error: %B contains a reloc (0x%s) for section %A "
"that references a non-existent global symbol"),
input_bfd, o, buffer);
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if (h->root.type != bfd_link_hash_defined
&& h->root.type != bfd_link_hash_defweak)
continue;
ps = &h->root.u.def.section;
sym_name = h->root.root.string;
}
else
{
Elf_Internal_Sym *sym = isymbuf + r_symndx;
ps = &finfo->sections[r_symndx];
sym_name = bfd_elf_sym_name (input_bfd,
symtab_hdr,
sym, *ps);
}
if ((sec = *ps) != NULL && elf_discarded_section (sec))
{
BFD_ASSERT (r_symndx != 0);
if (action & COMPLAIN)
(*finfo->info->callbacks->einfo)
(_("%X`%s' referenced in section `%A' of %B: "
"defined in discarded section `%A' of %B\n"),
sym_name, o, input_bfd, sec, sec->owner);
if (action & PRETEND)
{
asection *kept;
kept = _bfd_elf_check_kept_section (sec);
if (kept != NULL)
{
*ps = kept;
continue;
}
}
rel->r_info &= r_type_mask;
rel->r_addend = 0;
}
}
}
if (! (*relocate_section) (output_bfd, finfo->info,
input_bfd, o, contents,
internal_relocs,
isymbuf,
finfo->sections))
return FALSE;
if (emit_relocs)
{
Elf_Internal_Rela *irela;
Elf_Internal_Rela *irelaend;
bfd_vma last_offset;
struct elf_link_hash_entry **rel_hash;
struct elf_link_hash_entry **rel_hash_list;
Elf_Internal_Shdr *input_rel_hdr, *input_rel_hdr2;
unsigned int next_erel;
bfd_boolean rela_normal;
input_rel_hdr = &elf_section_data (o)->rel_hdr;
rela_normal = (bed->rela_normal
&& (input_rel_hdr->sh_entsize
== bed->s->sizeof_rela));
irela = internal_relocs;
irelaend = irela + o->reloc_count * bed->s->int_rels_per_ext_rel;
rel_hash = (elf_section_data (o->output_section)->rel_hashes
+ elf_section_data (o->output_section)->rel_count
+ elf_section_data (o->output_section)->rel_count2);
rel_hash_list = rel_hash;
last_offset = o->output_offset;
if (!finfo->info->relocatable)
last_offset += o->output_section->vma;
for (next_erel = 0; irela < irelaend; irela++, next_erel++)
{
unsigned long r_symndx;
asection *sec;
Elf_Internal_Sym sym;
if (next_erel == bed->s->int_rels_per_ext_rel)
{
rel_hash++;
next_erel = 0;
}
irela->r_offset = _bfd_elf_section_offset (output_bfd,
finfo->info, o,
irela->r_offset);
if (irela->r_offset >= (bfd_vma) -2)
{
irela->r_offset = last_offset;
irela->r_info = 0;
irela->r_addend = 0;
continue;
}
irela->r_offset += o->output_offset;
if (!finfo->info->relocatable)
irela->r_offset += o->output_section->vma;
last_offset = irela->r_offset;
r_symndx = irela->r_info >> r_sym_shift;
if (r_symndx == STN_UNDEF)
continue;
if (r_symndx >= locsymcount
|| (elf_bad_symtab (input_bfd)
&& finfo->sections[r_symndx] == NULL))
{
struct elf_link_hash_entry *rh;
unsigned long indx;
indx = r_symndx - extsymoff;
rh = elf_sym_hashes (input_bfd)[indx];
while (rh->root.type == bfd_link_hash_indirect
|| rh->root.type == bfd_link_hash_warning)
rh = (struct elf_link_hash_entry *) rh->root.u.i.link;
BFD_ASSERT (rh->indx < 0);
rh->indx = -2;
*rel_hash = rh;
continue;
}
*rel_hash = NULL;
sym = isymbuf[r_symndx];
sec = finfo->sections[r_symndx];
if (ELF_ST_TYPE (sym.st_info) == STT_SECTION)
{
r_symndx = 0;
if (bfd_is_abs_section (sec))
;
else if (sec == NULL || sec->owner == NULL)
{
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
else
{
asection *osec = sec->output_section;
if (bfd_is_abs_section (osec)
&& sec->kept_section != NULL
&& sec->kept_section->output_section != NULL)
{
osec = sec->kept_section->output_section;
irela->r_addend -= osec->vma;
}
if (!bfd_is_abs_section (osec))
{
r_symndx = osec->target_index;
BFD_ASSERT (r_symndx != 0);
}
}
if (rela_normal)
irela->r_addend += sec->output_offset;
}
else
{
if (finfo->indices[r_symndx] == -1)
{
unsigned long shlink;
const char *name;
asection *osec;
if (finfo->info->strip == strip_all)
{
bfd_set_error (bfd_error_invalid_operation);
return FALSE;
}
shlink = symtab_hdr->sh_link;
name = (bfd_elf_string_from_elf_section
(input_bfd, shlink, sym.st_name));
if (name == NULL)
return FALSE;
osec = sec->output_section;
sym.st_shndx =
_bfd_elf_section_from_bfd_section (output_bfd,
osec);
if (sym.st_shndx == SHN_BAD)
return FALSE;
sym.st_value += sec->output_offset;
if (! finfo->info->relocatable)
{
sym.st_value += osec->vma;
if (ELF_ST_TYPE (sym.st_info) == STT_TLS)
{
BFD_ASSERT (elf_hash_table (finfo->info)
->tls_sec != NULL);
sym.st_value -= (elf_hash_table (finfo->info)
->tls_sec->vma);
}
}
finfo->indices[r_symndx]
= bfd_get_symcount (output_bfd);
if (! elf_link_output_sym (finfo, name, &sym, sec,
NULL))
return FALSE;
}
r_symndx = finfo->indices[r_symndx];
}
irela->r_info = ((bfd_vma) r_symndx << r_sym_shift
| (irela->r_info & r_type_mask));
}
if (input_rel_hdr->sh_size != 0
&& !bed->elf_backend_emit_relocs (output_bfd, o,
input_rel_hdr,
internal_relocs,
rel_hash_list))
return FALSE;
input_rel_hdr2 = elf_section_data (o)->rel_hdr2;
if (input_rel_hdr2 && input_rel_hdr2->sh_size != 0)
{
internal_relocs += (NUM_SHDR_ENTRIES (input_rel_hdr)
* bed->s->int_rels_per_ext_rel);
rel_hash_list += NUM_SHDR_ENTRIES (input_rel_hdr);
if (!bed->elf_backend_emit_relocs (output_bfd, o,
input_rel_hdr2,
internal_relocs,
rel_hash_list))
return FALSE;
}
}
}
if (bed->elf_backend_write_section
&& (*bed->elf_backend_write_section) (output_bfd, o, contents))
{
}
else switch (o->sec_info_type)
{
case ELF_INFO_TYPE_STABS:
if (! (_bfd_write_section_stabs
(output_bfd,
&elf_hash_table (finfo->info)->stab_info,
o, &elf_section_data (o)->sec_info, contents)))
return FALSE;
break;
case ELF_INFO_TYPE_MERGE:
if (! _bfd_write_merged_section (output_bfd, o,
elf_section_data (o)->sec_info))
return FALSE;
break;
case ELF_INFO_TYPE_EH_FRAME:
{
if (! _bfd_elf_write_section_eh_frame (output_bfd, finfo->info,
o, contents))
return FALSE;
}
break;
default:
{
if (! (o->flags & SEC_EXCLUDE)
&& ! bfd_set_section_contents (output_bfd, o->output_section,
contents,
(file_ptr) o->output_offset,
o->size))
return FALSE;
}
break;
}
}
return TRUE;
}
static bfd_boolean
elf_reloc_link_order (bfd *output_bfd,
struct bfd_link_info *info,
asection *output_section,
struct bfd_link_order *link_order)
{
reloc_howto_type *howto;
long indx;
bfd_vma offset;
bfd_vma addend;
struct elf_link_hash_entry **rel_hash_ptr;
Elf_Internal_Shdr *rel_hdr;
const struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
Elf_Internal_Rela irel[MAX_INT_RELS_PER_EXT_REL];
bfd_byte *erel;
unsigned int i;
howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc);
if (howto == NULL)
{
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
addend = link_order->u.reloc.p->addend;
rel_hash_ptr = (elf_section_data (output_section)->rel_hashes
+ elf_section_data (output_section)->rel_count
+ elf_section_data (output_section)->rel_count2);
if (link_order->type == bfd_section_reloc_link_order)
{
indx = link_order->u.reloc.p->u.section->target_index;
BFD_ASSERT (indx != 0);
*rel_hash_ptr = NULL;
}
else
{
struct elf_link_hash_entry *h;
h = ((struct elf_link_hash_entry *)
bfd_wrapped_link_hash_lookup (output_bfd, info,
link_order->u.reloc.p->u.name,
FALSE, FALSE, TRUE));
if (h != NULL
&& (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak))
{
asection *section;
section = h->root.u.def.section;
indx = section->output_section->target_index;
*rel_hash_ptr = NULL;
addend += section->output_section->vma + section->output_offset;
}
else if (h != NULL)
{
h->indx = -2;
*rel_hash_ptr = h;
indx = 0;
}
else
{
if (! ((*info->callbacks->unattached_reloc)
(info, link_order->u.reloc.p->u.name, NULL, NULL, 0)))
return FALSE;
indx = 0;
}
}
if (howto->partial_inplace && addend != 0)
{
bfd_size_type size;
bfd_reloc_status_type rstat;
bfd_byte *buf;
bfd_boolean ok;
const char *sym_name;
size = bfd_get_reloc_size (howto);
buf = bfd_zmalloc (size);
if (buf == NULL)
return FALSE;
rstat = _bfd_relocate_contents (howto, output_bfd, addend, buf);
switch (rstat)
{
case bfd_reloc_ok:
break;
default:
case bfd_reloc_outofrange:
abort ();
case bfd_reloc_overflow:
if (link_order->type == bfd_section_reloc_link_order)
sym_name = bfd_section_name (output_bfd,
link_order->u.reloc.p->u.section);
else
sym_name = link_order->u.reloc.p->u.name;
if (! ((*info->callbacks->reloc_overflow)
(info, NULL, sym_name, howto->name, addend, NULL,
NULL, (bfd_vma) 0)))
{
free (buf);
return FALSE;
}
break;
}
ok = bfd_set_section_contents (output_bfd, output_section, buf,
link_order->offset, size);
free (buf);
if (! ok)
return FALSE;
}
offset = link_order->offset;
if (! info->relocatable)
offset += output_section->vma;
for (i = 0; i < bed->s->int_rels_per_ext_rel; i++)
{
irel[i].r_offset = offset;
irel[i].r_info = 0;
irel[i].r_addend = 0;
}
if (bed->s->arch_size == 32)
irel[0].r_info = ELF32_R_INFO (indx, howto->type);
else
irel[0].r_info = ELF64_R_INFO (indx, howto->type);
rel_hdr = &elf_section_data (output_section)->rel_hdr;
erel = rel_hdr->contents;
if (rel_hdr->sh_type == SHT_REL)
{
erel += (elf_section_data (output_section)->rel_count
* bed->s->sizeof_rel);
(*bed->s->swap_reloc_out) (output_bfd, irel, erel);
}
else
{
irel[0].r_addend = addend;
erel += (elf_section_data (output_section)->rel_count
* bed->s->sizeof_rela);
(*bed->s->swap_reloca_out) (output_bfd, irel, erel);
}
++elf_section_data (output_section)->rel_count;
return TRUE;
}
static bfd_vma
elf_get_linked_section_vma (struct bfd_link_order *p)
{
Elf_Internal_Shdr **elf_shdrp;
asection *s;
int elfsec;
s = p->u.indirect.section;
elf_shdrp = elf_elfsections (s->owner);
elfsec = _bfd_elf_section_from_bfd_section (s->owner, s);
elfsec = elf_shdrp[elfsec]->sh_link;
if (elfsec == 0)
{
const struct elf_backend_data *bed
= get_elf_backend_data (s->owner);
if (bed->link_order_error_handler)
bed->link_order_error_handler
(_("%B: warning: sh_link not set for section `%A'"), s->owner, s);
return 0;
}
else
{
s = elf_shdrp[elfsec]->bfd_section;
return s->output_section->vma + s->output_offset;
}
}
static int
compare_link_order (const void * a, const void * b)
{
bfd_vma apos;
bfd_vma bpos;
apos = elf_get_linked_section_vma (*(struct bfd_link_order **)a);
bpos = elf_get_linked_section_vma (*(struct bfd_link_order **)b);
if (apos < bpos)
return -1;
return apos > bpos;
}
static bfd_boolean
elf_fixup_link_order (bfd *abfd, asection *o)
{
int seen_linkorder;
int seen_other;
int n;
struct bfd_link_order *p;
bfd *sub;
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
int elfsec;
struct bfd_link_order **sections;
asection *s;
bfd_vma offset;
seen_other = 0;
seen_linkorder = 0;
for (p = o->map_head.link_order; p != NULL; p = p->next)
{
if (p->type == bfd_indirect_link_order
&& (bfd_get_flavour ((sub = p->u.indirect.section->owner))
== bfd_target_elf_flavour)
&& elf_elfheader (sub)->e_ident[EI_CLASS] == bed->s->elfclass)
{
s = p->u.indirect.section;
elfsec = _bfd_elf_section_from_bfd_section (sub, s);
if (elfsec != -1
&& elf_elfsections (sub)[elfsec]->sh_flags & SHF_LINK_ORDER)
seen_linkorder++;
else
seen_other++;
}
else
seen_other++;
}
if (!seen_linkorder)
return TRUE;
if (seen_other && seen_linkorder)
{
(*_bfd_error_handler) (_("%A has both ordered and unordered sections"),
o);
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
sections = (struct bfd_link_order **)
xmalloc (seen_linkorder * sizeof (struct bfd_link_order *));
seen_linkorder = 0;
for (p = o->map_head.link_order; p != NULL; p = p->next)
{
sections[seen_linkorder++] = p;
}
qsort (sections, seen_linkorder, sizeof (struct bfd_link_order *),
compare_link_order);
offset = 0;
for (n = 0; n < seen_linkorder; n++)
{
s = sections[n]->u.indirect.section;
offset &= ~(bfd_vma)((1 << s->alignment_power) - 1);
s->output_offset = offset;
sections[n]->offset = offset;
offset += sections[n]->size;
}
return TRUE;
}
bfd_boolean
bfd_elf_final_link (bfd *abfd, struct bfd_link_info *info)
{
bfd_boolean dynamic;
bfd_boolean emit_relocs;
bfd *dynobj;
struct elf_final_link_info finfo;
register asection *o;
register struct bfd_link_order *p;
register bfd *sub;
bfd_size_type max_contents_size;
bfd_size_type max_external_reloc_size;
bfd_size_type max_internal_reloc_count;
bfd_size_type max_sym_count;
bfd_size_type max_sym_shndx_count;
file_ptr off;
Elf_Internal_Sym elfsym;
unsigned int i;
Elf_Internal_Shdr *symtab_hdr;
Elf_Internal_Shdr *symtab_shndx_hdr;
Elf_Internal_Shdr *symstrtab_hdr;
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
struct elf_outext_info eoinfo;
bfd_boolean merged;
size_t relativecount = 0;
asection *reldyn = 0;
bfd_size_type amt;
if (! is_elf_hash_table (info->hash))
return FALSE;
if (info->shared)
abfd->flags |= DYNAMIC;
dynamic = elf_hash_table (info)->dynamic_sections_created;
dynobj = elf_hash_table (info)->dynobj;
emit_relocs = (info->relocatable
|| info->emitrelocations
|| bed->elf_backend_emit_relocs);
finfo.info = info;
finfo.output_bfd = abfd;
finfo.symstrtab = _bfd_elf_stringtab_init ();
if (finfo.symstrtab == NULL)
return FALSE;
if (! dynamic)
{
finfo.dynsym_sec = NULL;
finfo.hash_sec = NULL;
finfo.symver_sec = NULL;
}
else
{
finfo.dynsym_sec = bfd_get_section_by_name (dynobj, ".dynsym");
finfo.hash_sec = bfd_get_section_by_name (dynobj, ".hash");
BFD_ASSERT (finfo.dynsym_sec != NULL && finfo.hash_sec != NULL);
finfo.symver_sec = bfd_get_section_by_name (dynobj, ".gnu.version");
}
finfo.contents = NULL;
finfo.external_relocs = NULL;
finfo.internal_relocs = NULL;
finfo.external_syms = NULL;
finfo.locsym_shndx = NULL;
finfo.internal_syms = NULL;
finfo.indices = NULL;
finfo.sections = NULL;
finfo.symbuf = NULL;
finfo.symshndxbuf = NULL;
finfo.symbuf_count = 0;
finfo.shndxbuf_size = 0;
max_contents_size = 0;
max_external_reloc_size = 0;
max_internal_reloc_count = 0;
max_sym_count = 0;
max_sym_shndx_count = 0;
merged = FALSE;
for (o = abfd->sections; o != NULL; o = o->next)
{
struct bfd_elf_section_data *esdo = elf_section_data (o);
o->reloc_count = 0;
for (p = o->map_head.link_order; p != NULL; p = p->next)
{
unsigned int reloc_count = 0;
struct bfd_elf_section_data *esdi = NULL;
unsigned int *rel_count1;
if (p->type == bfd_section_reloc_link_order
|| p->type == bfd_symbol_reloc_link_order)
reloc_count = 1;
else if (p->type == bfd_indirect_link_order)
{
asection *sec;
sec = p->u.indirect.section;
esdi = elf_section_data (sec);
sec->linker_mark = TRUE;
if (sec->flags & SEC_MERGE)
merged = TRUE;
if (info->relocatable || info->emitrelocations)
reloc_count = sec->reloc_count;
else if (bed->elf_backend_count_relocs)
{
Elf_Internal_Rela * relocs;
relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
info->keep_memory);
reloc_count = (*bed->elf_backend_count_relocs) (sec, relocs);
if (elf_section_data (o)->relocs != relocs)
free (relocs);
}
if (sec->rawsize > max_contents_size)
max_contents_size = sec->rawsize;
if (sec->size > max_contents_size)
max_contents_size = sec->size;
if (bfd_get_flavour (sec->owner) == bfd_target_elf_flavour
&& (sec->owner->flags & DYNAMIC) == 0)
{
size_t sym_count;
if (elf_bad_symtab (sec->owner))
sym_count = (elf_tdata (sec->owner)->symtab_hdr.sh_size
/ bed->s->sizeof_sym);
else
sym_count = elf_tdata (sec->owner)->symtab_hdr.sh_info;
if (sym_count > max_sym_count)
max_sym_count = sym_count;
if (sym_count > max_sym_shndx_count
&& elf_symtab_shndx (sec->owner) != 0)
max_sym_shndx_count = sym_count;
if ((sec->flags & SEC_RELOC) != 0)
{
size_t ext_size;
ext_size = elf_section_data (sec)->rel_hdr.sh_size;
if (ext_size > max_external_reloc_size)
max_external_reloc_size = ext_size;
if (sec->reloc_count > max_internal_reloc_count)
max_internal_reloc_count = sec->reloc_count;
}
}
}
if (reloc_count == 0)
continue;
o->reloc_count += reloc_count;
rel_count1 = &esdo->rel_count;
if (esdi != NULL)
{
bfd_boolean same_size;
bfd_size_type entsize1;
entsize1 = esdi->rel_hdr.sh_entsize;
BFD_ASSERT (entsize1 == bed->s->sizeof_rel
|| entsize1 == bed->s->sizeof_rela);
same_size = !o->use_rela_p == (entsize1 == bed->s->sizeof_rel);
if (!same_size)
rel_count1 = &esdo->rel_count2;
if (esdi->rel_hdr2 != NULL)
{
bfd_size_type entsize2 = esdi->rel_hdr2->sh_entsize;
unsigned int alt_count;
unsigned int *rel_count2;
BFD_ASSERT (entsize2 != entsize1
&& (entsize2 == bed->s->sizeof_rel
|| entsize2 == bed->s->sizeof_rela));
rel_count2 = &esdo->rel_count2;
if (!same_size)
rel_count2 = &esdo->rel_count;
BFD_ASSERT (bed->elf_backend_count_relocs == NULL);
alt_count = NUM_SHDR_ENTRIES (esdi->rel_hdr2);
*rel_count2 += alt_count;
reloc_count -= alt_count;
}
}
*rel_count1 += reloc_count;
}
if (o->reloc_count > 0)
o->flags |= SEC_RELOC;
else
{
o->flags &=~ SEC_RELOC;
}
if ((o->flags & SEC_ALLOC) == 0
&& ! o->user_set_vma)
o->vma = 0;
}
if (! info->relocatable && merged)
elf_link_hash_traverse (elf_hash_table (info),
_bfd_elf_link_sec_merge_syms, abfd);
bfd_get_symcount (abfd) = info->strip == strip_all ? 0 : 1;
BFD_ASSERT (! abfd->output_has_begun);
if (! _bfd_elf_compute_section_file_positions (abfd, info))
goto error_return;
for (o = abfd->sections; o != NULL; o = o->next)
{
if ((o->flags & SEC_RELOC) != 0)
{
if (!(_bfd_elf_link_size_reloc_section
(abfd, &elf_section_data (o)->rel_hdr, o)))
goto error_return;
if (elf_section_data (o)->rel_hdr2
&& !(_bfd_elf_link_size_reloc_section
(abfd, elf_section_data (o)->rel_hdr2, o)))
goto error_return;
}
elf_section_data (o)->rel_count = 0;
elf_section_data (o)->rel_count2 = 0;
}
_bfd_elf_assign_file_positions_for_relocs (abfd);
bfd_get_symcount (abfd) = 0;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
symtab_hdr->sh_type = SHT_SYMTAB;
symtab_hdr->sh_entsize = bed->s->sizeof_sym;
symtab_hdr->sh_addralign = 1 << bed->s->log_file_align;
off = elf_tdata (abfd)->next_file_pos;
off = _bfd_elf_assign_file_position_for_section (symtab_hdr, off, TRUE);
if (! info->keep_memory || max_sym_count < 20)
finfo.symbuf_size = 20;
else
finfo.symbuf_size = max_sym_count;
amt = finfo.symbuf_size;
amt *= bed->s->sizeof_sym;
finfo.symbuf = bfd_malloc (amt);
if (finfo.symbuf == NULL)
goto error_return;
if (elf_numsections (abfd) > SHN_LORESERVE)
{
amt = 2 * max_sym_count + elf_numsections (abfd) + 1000;
finfo.shndxbuf_size = amt;
amt *= sizeof (Elf_External_Sym_Shndx);
finfo.symshndxbuf = bfd_zmalloc (amt);
if (finfo.symshndxbuf == NULL)
goto error_return;
}
if (info->strip != strip_all
|| emit_relocs)
{
elfsym.st_value = 0;
elfsym.st_size = 0;
elfsym.st_info = 0;
elfsym.st_other = 0;
elfsym.st_shndx = SHN_UNDEF;
if (! elf_link_output_sym (&finfo, NULL, &elfsym, bfd_und_section_ptr,
NULL))
goto error_return;
}
if (info->strip != strip_all
|| emit_relocs)
{
elfsym.st_size = 0;
elfsym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
elfsym.st_other = 0;
for (i = 1; i < elf_numsections (abfd); i++)
{
o = bfd_section_from_elf_index (abfd, i);
if (o != NULL)
o->target_index = bfd_get_symcount (abfd);
elfsym.st_shndx = i;
if (info->relocatable || o == NULL)
elfsym.st_value = 0;
else
elfsym.st_value = o->vma;
if (! elf_link_output_sym (&finfo, NULL, &elfsym, o, NULL))
goto error_return;
if (i == SHN_LORESERVE - 1)
i += SHN_HIRESERVE + 1 - SHN_LORESERVE;
}
}
if (max_contents_size != 0)
{
finfo.contents = bfd_malloc (max_contents_size);
if (finfo.contents == NULL)
goto error_return;
}
if (max_external_reloc_size != 0)
{
finfo.external_relocs = bfd_malloc (max_external_reloc_size);
if (finfo.external_relocs == NULL)
goto error_return;
}
if (max_internal_reloc_count != 0)
{
amt = max_internal_reloc_count * bed->s->int_rels_per_ext_rel;
amt *= sizeof (Elf_Internal_Rela);
finfo.internal_relocs = bfd_malloc (amt);
if (finfo.internal_relocs == NULL)
goto error_return;
}
if (max_sym_count != 0)
{
amt = max_sym_count * bed->s->sizeof_sym;
finfo.external_syms = bfd_malloc (amt);
if (finfo.external_syms == NULL)
goto error_return;
amt = max_sym_count * sizeof (Elf_Internal_Sym);
finfo.internal_syms = bfd_malloc (amt);
if (finfo.internal_syms == NULL)
goto error_return;
amt = max_sym_count * sizeof (long);
finfo.indices = bfd_malloc (amt);
if (finfo.indices == NULL)
goto error_return;
amt = max_sym_count * sizeof (asection *);
finfo.sections = bfd_malloc (amt);
if (finfo.sections == NULL)
goto error_return;
}
if (max_sym_shndx_count != 0)
{
amt = max_sym_shndx_count * sizeof (Elf_External_Sym_Shndx);
finfo.locsym_shndx = bfd_malloc (amt);
if (finfo.locsym_shndx == NULL)
goto error_return;
}
if (elf_hash_table (info)->tls_sec)
{
bfd_vma base, end = 0;
asection *sec;
for (sec = elf_hash_table (info)->tls_sec;
sec && (sec->flags & SEC_THREAD_LOCAL);
sec = sec->next)
{
bfd_vma size = sec->size;
if (size == 0 && (sec->flags & SEC_HAS_CONTENTS) == 0)
{
struct bfd_link_order *o;
for (o = sec->map_head.link_order; o != NULL; o = o->next)
if (size < o->offset + o->size)
size = o->offset + o->size;
}
end = sec->vma + size;
}
base = elf_hash_table (info)->tls_sec->vma;
end = align_power (end, elf_hash_table (info)->tls_sec->alignment_power);
elf_hash_table (info)->tls_size = end - base;
}
for (o = abfd->sections; o != NULL; o = o->next)
{
if (!elf_fixup_link_order (abfd, o))
return FALSE;
}
for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
sub->output_has_begun = FALSE;
for (o = abfd->sections; o != NULL; o = o->next)
{
for (p = o->map_head.link_order; p != NULL; p = p->next)
{
if (p->type == bfd_indirect_link_order
&& (bfd_get_flavour ((sub = p->u.indirect.section->owner))
== bfd_target_elf_flavour)
&& elf_elfheader (sub)->e_ident[EI_CLASS] == bed->s->elfclass)
{
if (! sub->output_has_begun)
{
if (! elf_link_input_bfd (&finfo, sub))
goto error_return;
sub->output_has_begun = TRUE;
}
}
else if (p->type == bfd_section_reloc_link_order
|| p->type == bfd_symbol_reloc_link_order)
{
if (! elf_reloc_link_order (abfd, info, o, p))
goto error_return;
}
else
{
if (! _bfd_default_link_order (abfd, info, o, p))
goto error_return;
}
}
}
eoinfo.failed = FALSE;
eoinfo.finfo = &finfo;
eoinfo.localsyms = TRUE;
elf_link_hash_traverse (elf_hash_table (info), elf_link_output_extsym,
&eoinfo);
if (eoinfo.failed)
return FALSE;
symtab_hdr->sh_info = bfd_get_symcount (abfd);
if (dynamic
&& finfo.dynsym_sec->output_section != bfd_abs_section_ptr)
{
Elf_Internal_Sym sym;
bfd_byte *dynsym = finfo.dynsym_sec->contents;
long last_local = 0;
if (info->shared || elf_hash_table (info)->is_relocatable_executable)
{
asection *s;
sym.st_size = 0;
sym.st_name = 0;
sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
sym.st_other = 0;
for (s = abfd->sections; s != NULL; s = s->next)
{
int indx;
bfd_byte *dest;
long dynindx;
dynindx = elf_section_data (s)->dynindx;
if (dynindx <= 0)
continue;
indx = elf_section_data (s)->this_idx;
BFD_ASSERT (indx > 0);
sym.st_shndx = indx;
sym.st_value = s->vma;
dest = dynsym + dynindx * bed->s->sizeof_sym;
if (last_local < dynindx)
last_local = dynindx;
bed->s->swap_symbol_out (abfd, &sym, dest, 0);
}
}
if (elf_hash_table (info)->dynlocal)
{
struct elf_link_local_dynamic_entry *e;
for (e = elf_hash_table (info)->dynlocal; e ; e = e->next)
{
asection *s;
bfd_byte *dest;
sym.st_size = e->isym.st_size;
sym.st_other = e->isym.st_other;
sym = e->isym;
if (e->isym.st_shndx != SHN_UNDEF
&& (e->isym.st_shndx < SHN_LORESERVE
|| e->isym.st_shndx > SHN_HIRESERVE))
{
s = bfd_section_from_elf_index (e->input_bfd,
e->isym.st_shndx);
sym.st_shndx =
elf_section_data (s->output_section)->this_idx;
sym.st_value = (s->output_section->vma
+ s->output_offset
+ e->isym.st_value);
}
if (last_local < e->dynindx)
last_local = e->dynindx;
dest = dynsym + e->dynindx * bed->s->sizeof_sym;
bed->s->swap_symbol_out (abfd, &sym, dest, 0);
}
}
elf_section_data (finfo.dynsym_sec->output_section)->this_hdr.sh_info =
last_local + 1;
}
eoinfo.failed = FALSE;
eoinfo.localsyms = FALSE;
eoinfo.finfo = &finfo;
elf_link_hash_traverse (elf_hash_table (info), elf_link_output_extsym,
&eoinfo);
if (eoinfo.failed)
return FALSE;
if (bed->elf_backend_output_arch_syms)
{
typedef bfd_boolean (*out_sym_func)
(void *, const char *, Elf_Internal_Sym *, asection *,
struct elf_link_hash_entry *);
if (! ((*bed->elf_backend_output_arch_syms)
(abfd, info, &finfo, (out_sym_func) elf_link_output_sym)))
return FALSE;
}
if (! elf_link_flush_output_syms (&finfo, bed))
return FALSE;
off += symtab_hdr->sh_size;
symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
if (symtab_shndx_hdr->sh_name != 0)
{
symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX;
symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx);
symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx);
amt = bfd_get_symcount (abfd) * sizeof (Elf_External_Sym_Shndx);
symtab_shndx_hdr->sh_size = amt;
off = _bfd_elf_assign_file_position_for_section (symtab_shndx_hdr,
off, TRUE);
if (bfd_seek (abfd, symtab_shndx_hdr->sh_offset, SEEK_SET) != 0
|| (bfd_bwrite (finfo.symshndxbuf, amt, abfd) != amt))
return FALSE;
}
symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr;
symstrtab_hdr->sh_type = SHT_STRTAB;
symstrtab_hdr->sh_flags = 0;
symstrtab_hdr->sh_addr = 0;
symstrtab_hdr->sh_size = _bfd_stringtab_size (finfo.symstrtab);
symstrtab_hdr->sh_entsize = 0;
symstrtab_hdr->sh_link = 0;
symstrtab_hdr->sh_info = 0;
symstrtab_hdr->sh_addralign = 1;
off = _bfd_elf_assign_file_position_for_section (symstrtab_hdr, off, TRUE);
elf_tdata (abfd)->next_file_pos = off;
if (bfd_get_symcount (abfd) > 0)
{
if (bfd_seek (abfd, symstrtab_hdr->sh_offset, SEEK_SET) != 0
|| ! _bfd_stringtab_emit (abfd, finfo.symstrtab))
return FALSE;
}
for (o = abfd->sections; o != NULL; o = o->next)
{
if ((o->flags & SEC_RELOC) == 0)
continue;
elf_link_adjust_relocs (abfd, &elf_section_data (o)->rel_hdr,
elf_section_data (o)->rel_count,
elf_section_data (o)->rel_hashes);
if (elf_section_data (o)->rel_hdr2 != NULL)
elf_link_adjust_relocs (abfd, elf_section_data (o)->rel_hdr2,
elf_section_data (o)->rel_count2,
(elf_section_data (o)->rel_hashes
+ elf_section_data (o)->rel_count));
o->reloc_count = 0;
}
if (dynamic && info->combreloc && dynobj != NULL)
relativecount = elf_link_sort_relocs (abfd, info, &reldyn);
if (dynamic)
{
bfd_byte *dyncon, *dynconend;
o = bfd_get_section_by_name (dynobj, ".dynamic");
BFD_ASSERT (o != NULL);
dyncon = o->contents;
dynconend = o->contents + o->size;
for (; dyncon < dynconend; dyncon += bed->s->sizeof_dyn)
{
Elf_Internal_Dyn dyn;
const char *name;
unsigned int type;
bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
switch (dyn.d_tag)
{
default:
continue;
case DT_NULL:
if (relativecount > 0 && dyncon + bed->s->sizeof_dyn < dynconend)
{
switch (elf_section_data (reldyn)->this_hdr.sh_type)
{
case SHT_REL: dyn.d_tag = DT_RELCOUNT; break;
case SHT_RELA: dyn.d_tag = DT_RELACOUNT; break;
default: continue;
}
dyn.d_un.d_val = relativecount;
relativecount = 0;
break;
}
continue;
case DT_INIT:
name = info->init_function;
goto get_sym;
case DT_FINI:
name = info->fini_function;
get_sym:
{
struct elf_link_hash_entry *h;
h = elf_link_hash_lookup (elf_hash_table (info), name,
FALSE, FALSE, TRUE);
if (h != NULL
&& (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak))
{
dyn.d_un.d_val = h->root.u.def.value;
o = h->root.u.def.section;
if (o->output_section != NULL)
dyn.d_un.d_val += (o->output_section->vma
+ o->output_offset);
else
{
dyn.d_un.d_val = 0;
}
break;
}
}
continue;
case DT_PREINIT_ARRAYSZ:
name = ".preinit_array";
goto get_size;
case DT_INIT_ARRAYSZ:
name = ".init_array";
goto get_size;
case DT_FINI_ARRAYSZ:
name = ".fini_array";
get_size:
o = bfd_get_section_by_name (abfd, name);
if (o == NULL)
{
(*_bfd_error_handler)
(_("%B: could not find output section %s"), abfd, name);
goto error_return;
}
if (o->size == 0)
(*_bfd_error_handler)
(_("warning: %s section has zero size"), name);
dyn.d_un.d_val = o->size;
break;
case DT_PREINIT_ARRAY:
name = ".preinit_array";
goto get_vma;
case DT_INIT_ARRAY:
name = ".init_array";
goto get_vma;
case DT_FINI_ARRAY:
name = ".fini_array";
goto get_vma;
case DT_HASH:
name = ".hash";
goto get_vma;
case DT_STRTAB:
name = ".dynstr";
goto get_vma;
case DT_SYMTAB:
name = ".dynsym";
goto get_vma;
case DT_VERDEF:
name = ".gnu.version_d";
goto get_vma;
case DT_VERNEED:
name = ".gnu.version_r";
goto get_vma;
case DT_VERSYM:
name = ".gnu.version";
get_vma:
o = bfd_get_section_by_name (abfd, name);
if (o == NULL)
{
(*_bfd_error_handler)
(_("%B: could not find output section %s"), abfd, name);
goto error_return;
}
dyn.d_un.d_ptr = o->vma;
break;
case DT_REL:
case DT_RELA:
case DT_RELSZ:
case DT_RELASZ:
if (dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ)
type = SHT_REL;
else
type = SHT_RELA;
dyn.d_un.d_val = 0;
for (i = 1; i < elf_numsections (abfd); i++)
{
Elf_Internal_Shdr *hdr;
hdr = elf_elfsections (abfd)[i];
if (hdr->sh_type == type
&& (hdr->sh_flags & SHF_ALLOC) != 0)
{
if (dyn.d_tag == DT_RELSZ || dyn.d_tag == DT_RELASZ)
dyn.d_un.d_val += hdr->sh_size;
else
{
if (dyn.d_un.d_val == 0
|| hdr->sh_addr < dyn.d_un.d_val)
dyn.d_un.d_val = hdr->sh_addr;
}
}
}
break;
}
bed->s->swap_dyn_out (dynobj, &dyn, dyncon);
}
}
if (dynobj != NULL)
{
if (! (*bed->elf_backend_finish_dynamic_sections) (abfd, info))
goto error_return;
for (o = dynobj->sections; o != NULL; o = o->next)
{
if ((o->flags & SEC_HAS_CONTENTS) == 0
|| o->size == 0
|| o->output_section == bfd_abs_section_ptr)
continue;
if ((o->flags & SEC_LINKER_CREATED) == 0)
{
continue;
}
if (elf_hash_table (info)->stab_info.stabstr == o)
continue;
if (elf_hash_table (info)->eh_info.hdr_sec == o)
continue;
if ((elf_section_data (o->output_section)->this_hdr.sh_type
!= SHT_STRTAB)
|| strcmp (bfd_get_section_name (abfd, o), ".dynstr") != 0)
{
if (! bfd_set_section_contents (abfd, o->output_section,
o->contents,
(file_ptr) o->output_offset,
o->size))
goto error_return;
}
else
{
off = elf_section_data (o->output_section)->this_hdr.sh_offset;
if (bfd_seek (abfd, off, SEEK_SET) != 0
|| ! _bfd_elf_strtab_emit (abfd,
elf_hash_table (info)->dynstr))
goto error_return;
}
}
}
if (info->relocatable)
{
bfd_boolean failed = FALSE;
bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed);
if (failed)
goto error_return;
}
if (elf_hash_table (info)->stab_info.stabstr != NULL)
{
if (! _bfd_write_stab_strings (abfd, &elf_hash_table (info)->stab_info))
goto error_return;
}
if (info->eh_frame_hdr)
{
if (! _bfd_elf_write_section_eh_frame_hdr (abfd, info))
goto error_return;
}
if (finfo.symstrtab != NULL)
_bfd_stringtab_free (finfo.symstrtab);
if (finfo.contents != NULL)
free (finfo.contents);
if (finfo.external_relocs != NULL)
free (finfo.external_relocs);
if (finfo.internal_relocs != NULL)
free (finfo.internal_relocs);
if (finfo.external_syms != NULL)
free (finfo.external_syms);
if (finfo.locsym_shndx != NULL)
free (finfo.locsym_shndx);
if (finfo.internal_syms != NULL)
free (finfo.internal_syms);
if (finfo.indices != NULL)
free (finfo.indices);
if (finfo.sections != NULL)
free (finfo.sections);
if (finfo.symbuf != NULL)
free (finfo.symbuf);
if (finfo.symshndxbuf != NULL)
free (finfo.symshndxbuf);
for (o = abfd->sections; o != NULL; o = o->next)
{
if ((o->flags & SEC_RELOC) != 0
&& elf_section_data (o)->rel_hashes != NULL)
free (elf_section_data (o)->rel_hashes);
}
elf_tdata (abfd)->linker = TRUE;
return TRUE;
error_return:
if (finfo.symstrtab != NULL)
_bfd_stringtab_free (finfo.symstrtab);
if (finfo.contents != NULL)
free (finfo.contents);
if (finfo.external_relocs != NULL)
free (finfo.external_relocs);
if (finfo.internal_relocs != NULL)
free (finfo.internal_relocs);
if (finfo.external_syms != NULL)
free (finfo.external_syms);
if (finfo.locsym_shndx != NULL)
free (finfo.locsym_shndx);
if (finfo.internal_syms != NULL)
free (finfo.internal_syms);
if (finfo.indices != NULL)
free (finfo.indices);
if (finfo.sections != NULL)
free (finfo.sections);
if (finfo.symbuf != NULL)
free (finfo.symbuf);
if (finfo.symshndxbuf != NULL)
free (finfo.symshndxbuf);
for (o = abfd->sections; o != NULL; o = o->next)
{
if ((o->flags & SEC_RELOC) != 0
&& elf_section_data (o)->rel_hashes != NULL)
free (elf_section_data (o)->rel_hashes);
}
return FALSE;
}
typedef asection * (*gc_mark_hook_fn)
(asection *, struct bfd_link_info *, Elf_Internal_Rela *,
struct elf_link_hash_entry *, Elf_Internal_Sym *);
bfd_boolean
_bfd_elf_gc_mark (struct bfd_link_info *info,
asection *sec,
gc_mark_hook_fn gc_mark_hook)
{
bfd_boolean ret;
bfd_boolean is_eh;
asection *group_sec;
sec->gc_mark = 1;
group_sec = elf_section_data (sec)->next_in_group;
if (group_sec && !group_sec->gc_mark)
if (!_bfd_elf_gc_mark (info, group_sec, gc_mark_hook))
return FALSE;
ret = TRUE;
is_eh = strcmp (sec->name, ".eh_frame") == 0;
if ((sec->flags & SEC_RELOC) != 0 && sec->reloc_count > 0)
{
Elf_Internal_Rela *relstart, *rel, *relend;
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
size_t nlocsyms;
size_t extsymoff;
bfd *input_bfd = sec->owner;
const struct elf_backend_data *bed = get_elf_backend_data (input_bfd);
Elf_Internal_Sym *isym = NULL;
int r_sym_shift;
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (input_bfd);
if (elf_bad_symtab (input_bfd))
{
nlocsyms = symtab_hdr->sh_size / bed->s->sizeof_sym;
extsymoff = 0;
}
else
extsymoff = nlocsyms = symtab_hdr->sh_info;
isym = (Elf_Internal_Sym *) symtab_hdr->contents;
if (isym == NULL && nlocsyms != 0)
{
isym = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, nlocsyms, 0,
NULL, NULL, NULL);
if (isym == NULL)
return FALSE;
}
relstart = _bfd_elf_link_read_relocs (input_bfd, sec, NULL, NULL,
info->keep_memory);
if (relstart == NULL)
{
ret = FALSE;
goto out1;
}
relend = relstart + sec->reloc_count * bed->s->int_rels_per_ext_rel;
if (bed->s->arch_size == 32)
r_sym_shift = 8;
else
r_sym_shift = 32;
for (rel = relstart; rel < relend; rel++)
{
unsigned long r_symndx;
asection *rsec;
struct elf_link_hash_entry *h;
r_symndx = rel->r_info >> r_sym_shift;
if (r_symndx == 0)
continue;
if (r_symndx >= nlocsyms
|| ELF_ST_BIND (isym[r_symndx].st_info) != STB_LOCAL)
{
h = sym_hashes[r_symndx - extsymoff];
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
rsec = (*gc_mark_hook) (sec, info, rel, h, NULL);
}
else
{
rsec = (*gc_mark_hook) (sec, info, rel, NULL, &isym[r_symndx]);
}
if (rsec && !rsec->gc_mark)
{
if (bfd_get_flavour (rsec->owner) != bfd_target_elf_flavour)
rsec->gc_mark = 1;
else if (is_eh)
rsec->gc_mark_from_eh = 1;
else if (!_bfd_elf_gc_mark (info, rsec, gc_mark_hook))
{
ret = FALSE;
goto out2;
}
}
}
out2:
if (elf_section_data (sec)->relocs != relstart)
free (relstart);
out1:
if (isym != NULL && symtab_hdr->contents != (unsigned char *) isym)
{
if (! info->keep_memory)
free (isym);
else
symtab_hdr->contents = (unsigned char *) isym;
}
}
return ret;
}
static bfd_boolean
elf_gc_sweep_symbol (struct elf_link_hash_entry *h, void *idxptr)
{
int *idx = idxptr;
if (h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if (h->dynindx != -1
&& ((h->root.type != bfd_link_hash_defined
&& h->root.type != bfd_link_hash_defweak)
|| h->root.u.def.section->gc_mark))
h->dynindx = (*idx)++;
return TRUE;
}
typedef bfd_boolean (*gc_sweep_hook_fn)
(bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
static bfd_boolean
elf_gc_sweep (struct bfd_link_info *info, gc_sweep_hook_fn gc_sweep_hook)
{
bfd *sub;
for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
{
asection *o;
if (bfd_get_flavour (sub) != bfd_target_elf_flavour)
continue;
for (o = sub->sections; o != NULL; o = o->next)
{
if ((o->flags & (SEC_DEBUGGING | SEC_LINKER_CREATED)) != 0
|| (o->flags & (SEC_ALLOC | SEC_LOAD)) == 0)
o->gc_mark = 1;
if (o->gc_mark)
continue;
if (o->flags & SEC_EXCLUDE)
continue;
o->flags |= SEC_EXCLUDE;
if (gc_sweep_hook
&& (o->flags & SEC_RELOC) != 0
&& o->reloc_count > 0
&& !bfd_is_abs_section (o->output_section))
{
Elf_Internal_Rela *internal_relocs;
bfd_boolean r;
internal_relocs
= _bfd_elf_link_read_relocs (o->owner, o, NULL, NULL,
info->keep_memory);
if (internal_relocs == NULL)
return FALSE;
r = (*gc_sweep_hook) (o->owner, info, o, internal_relocs);
if (elf_section_data (o)->relocs != internal_relocs)
free (internal_relocs);
if (!r)
return FALSE;
}
}
}
{
int i = 0;
elf_link_hash_traverse (elf_hash_table (info), elf_gc_sweep_symbol, &i);
if (i != 0)
++i;
elf_hash_table (info)->dynsymcount = i;
}
return TRUE;
}
static bfd_boolean
elf_gc_propagate_vtable_entries_used (struct elf_link_hash_entry *h, void *okp)
{
if (h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if (h->vtable == NULL || h->vtable->parent == NULL)
return TRUE;
if (h->vtable->parent == (struct elf_link_hash_entry *) -1)
return TRUE;
if (h->vtable->used && h->vtable->used[-1])
return TRUE;
elf_gc_propagate_vtable_entries_used (h->vtable->parent, okp);
if (h->vtable->used == NULL)
{
h->vtable->used = h->vtable->parent->vtable->used;
h->vtable->size = h->vtable->parent->vtable->size;
}
else
{
size_t n;
bfd_boolean *cu, *pu;
cu = h->vtable->used;
cu[-1] = TRUE;
pu = h->vtable->parent->vtable->used;
if (pu != NULL)
{
const struct elf_backend_data *bed;
unsigned int log_file_align;
bed = get_elf_backend_data (h->root.u.def.section->owner);
log_file_align = bed->s->log_file_align;
n = h->vtable->parent->vtable->size >> log_file_align;
while (n--)
{
if (*pu)
*cu = TRUE;
pu++;
cu++;
}
}
}
return TRUE;
}
static bfd_boolean
elf_gc_smash_unused_vtentry_relocs (struct elf_link_hash_entry *h, void *okp)
{
asection *sec;
bfd_vma hstart, hend;
Elf_Internal_Rela *relstart, *relend, *rel;
const struct elf_backend_data *bed;
unsigned int log_file_align;
if (h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if (h->vtable == NULL || h->vtable->parent == NULL)
return TRUE;
BFD_ASSERT (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak);
sec = h->root.u.def.section;
hstart = h->root.u.def.value;
hend = hstart + h->size;
relstart = _bfd_elf_link_read_relocs (sec->owner, sec, NULL, NULL, TRUE);
if (!relstart)
return *(bfd_boolean *) okp = FALSE;
bed = get_elf_backend_data (sec->owner);
log_file_align = bed->s->log_file_align;
relend = relstart + sec->reloc_count * bed->s->int_rels_per_ext_rel;
for (rel = relstart; rel < relend; ++rel)
if (rel->r_offset >= hstart && rel->r_offset < hend)
{
if (h->vtable->used
&& (rel->r_offset - hstart) < h->vtable->size)
{
bfd_vma entry = (rel->r_offset - hstart) >> log_file_align;
if (h->vtable->used[entry])
continue;
}
rel->r_offset = rel->r_info = rel->r_addend = 0;
}
return TRUE;
}
static bfd_boolean
elf_gc_mark_dynamic_ref_symbol (struct elf_link_hash_entry *h, void *inf)
{
struct bfd_link_info *info = (struct bfd_link_info *) inf;
if (h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if ((h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
&& (h->ref_dynamic
|| (info->shared
&& h->def_regular
&& ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
&& ELF_ST_VISIBILITY (h->other) != STV_HIDDEN)))
h->root.u.def.section->flags |= SEC_KEEP;
return TRUE;
}
bfd_boolean
bfd_elf_gc_sections (bfd *abfd, struct bfd_link_info *info)
{
bfd_boolean ok = TRUE;
bfd *sub;
asection * (*gc_mark_hook)
(asection *, struct bfd_link_info *, Elf_Internal_Rela *,
struct elf_link_hash_entry *h, Elf_Internal_Sym *);
if (!get_elf_backend_data (abfd)->can_gc_sections
|| info->relocatable
|| info->emitrelocations
|| !is_elf_hash_table (info->hash))
{
(*_bfd_error_handler)(_("Warning: gc-sections option ignored"));
return TRUE;
}
elf_link_hash_traverse (elf_hash_table (info),
elf_gc_propagate_vtable_entries_used,
&ok);
if (!ok)
return FALSE;
elf_link_hash_traverse (elf_hash_table (info),
elf_gc_smash_unused_vtentry_relocs,
&ok);
if (!ok)
return FALSE;
if (elf_hash_table (info)->dynamic_sections_created)
elf_link_hash_traverse (elf_hash_table (info),
elf_gc_mark_dynamic_ref_symbol,
info);
gc_mark_hook = get_elf_backend_data (abfd)->gc_mark_hook;
for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
{
asection *o;
if (bfd_get_flavour (sub) != bfd_target_elf_flavour)
continue;
for (o = sub->sections; o != NULL; o = o->next)
if ((o->flags & SEC_KEEP) != 0 && !o->gc_mark)
if (!_bfd_elf_gc_mark (info, o, gc_mark_hook))
return FALSE;
}
for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
{
asection *o;
if (bfd_get_flavour (sub) != bfd_target_elf_flavour)
continue;
for (o = sub->sections; o != NULL; o = o->next)
if (!o->gc_mark && o->gc_mark_from_eh && (o->flags & SEC_CODE) == 0)
{
if (strncmp (o->name, ".gcc_except_table.", 18) == 0)
{
unsigned long len;
char *fn_name;
asection *fn_text;
len = strlen (o->name + 18) + 1;
fn_name = bfd_malloc (len + 6);
if (fn_name == NULL)
return FALSE;
memcpy (fn_name, ".text.", 6);
memcpy (fn_name + 6, o->name + 18, len);
fn_text = bfd_get_section_by_name (sub, fn_name);
free (fn_name);
if (fn_text == NULL || !fn_text->gc_mark)
continue;
}
if (!_bfd_elf_gc_mark (info, o, gc_mark_hook))
return FALSE;
}
}
if (!elf_gc_sweep (info, get_elf_backend_data (abfd)->gc_sweep_hook))
return FALSE;
return TRUE;
}
bfd_boolean
bfd_elf_gc_record_vtinherit (bfd *abfd,
asection *sec,
struct elf_link_hash_entry *h,
bfd_vma offset)
{
struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
struct elf_link_hash_entry **search, *child;
bfd_size_type extsymcount;
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
extsymcount = elf_tdata (abfd)->symtab_hdr.sh_size / bed->s->sizeof_sym;
if (!elf_bad_symtab (abfd))
extsymcount -= elf_tdata (abfd)->symtab_hdr.sh_info;
sym_hashes = elf_sym_hashes (abfd);
sym_hashes_end = sym_hashes + extsymcount;
for (search = sym_hashes; search != sym_hashes_end; ++search)
{
if ((child = *search) != NULL
&& (child->root.type == bfd_link_hash_defined
|| child->root.type == bfd_link_hash_defweak)
&& child->root.u.def.section == sec
&& child->root.u.def.value == offset)
goto win;
}
(*_bfd_error_handler) ("%B: %A+%lu: No symbol found for INHERIT",
abfd, sec, (unsigned long) offset);
bfd_set_error (bfd_error_invalid_operation);
return FALSE;
win:
if (!child->vtable)
{
child->vtable = bfd_zalloc (abfd, sizeof (*child->vtable));
if (!child->vtable)
return FALSE;
}
if (!h)
{
child->vtable->parent = (struct elf_link_hash_entry *) -1;
}
else
child->vtable->parent = h;
return TRUE;
}
bfd_boolean
bfd_elf_gc_record_vtentry (bfd *abfd ATTRIBUTE_UNUSED,
asection *sec ATTRIBUTE_UNUSED,
struct elf_link_hash_entry *h,
bfd_vma addend)
{
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
unsigned int log_file_align = bed->s->log_file_align;
if (!h->vtable)
{
h->vtable = bfd_zalloc (abfd, sizeof (*h->vtable));
if (!h->vtable)
return FALSE;
}
if (addend >= h->vtable->size)
{
size_t size, bytes, file_align;
bfd_boolean *ptr = h->vtable->used;
file_align = 1 << log_file_align;
if (h->root.type == bfd_link_hash_undefined)
size = addend + file_align;
else
{
size = h->size;
if (addend >= size)
{
size = addend + file_align;
}
}
size = (size + file_align - 1) & -file_align;
bytes = ((size >> log_file_align) + 1) * sizeof (bfd_boolean);
if (ptr)
{
ptr = bfd_realloc (ptr - 1, bytes);
if (ptr != NULL)
{
size_t oldbytes;
oldbytes = (((h->vtable->size >> log_file_align) + 1)
* sizeof (bfd_boolean));
memset (((char *) ptr) + oldbytes, 0, bytes - oldbytes);
}
}
else
ptr = bfd_zmalloc (bytes);
if (ptr == NULL)
return FALSE;
h->vtable->used = ptr + 1;
h->vtable->size = size;
}
h->vtable->used[addend >> log_file_align] = TRUE;
return TRUE;
}
struct alloc_got_off_arg {
bfd_vma gotoff;
unsigned int got_elt_size;
};
static bfd_boolean
elf_gc_allocate_got_offsets (struct elf_link_hash_entry *h, void *arg)
{
struct alloc_got_off_arg *gofarg = arg;
if (h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if (h->got.refcount > 0)
{
h->got.offset = gofarg->gotoff;
gofarg->gotoff += gofarg->got_elt_size;
}
else
h->got.offset = (bfd_vma) -1;
return TRUE;
}
bfd_boolean
bfd_elf_gc_common_finalize_got_offsets (bfd *abfd,
struct bfd_link_info *info)
{
bfd *i;
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
bfd_vma gotoff;
unsigned int got_elt_size = bed->s->arch_size / 8;
struct alloc_got_off_arg gofarg;
if (! is_elf_hash_table (info->hash))
return FALSE;
if (bed->want_got_plt)
gotoff = 0;
else
gotoff = bed->got_header_size;
for (i = info->input_bfds; i; i = i->link_next)
{
bfd_signed_vma *local_got;
bfd_size_type j, locsymcount;
Elf_Internal_Shdr *symtab_hdr;
if (bfd_get_flavour (i) != bfd_target_elf_flavour)
continue;
local_got = elf_local_got_refcounts (i);
if (!local_got)
continue;
symtab_hdr = &elf_tdata (i)->symtab_hdr;
if (elf_bad_symtab (i))
locsymcount = symtab_hdr->sh_size / bed->s->sizeof_sym;
else
locsymcount = symtab_hdr->sh_info;
for (j = 0; j < locsymcount; ++j)
{
if (local_got[j] > 0)
{
local_got[j] = gotoff;
gotoff += got_elt_size;
}
else
local_got[j] = (bfd_vma) -1;
}
}
gofarg.gotoff = gotoff;
gofarg.got_elt_size = got_elt_size;
elf_link_hash_traverse (elf_hash_table (info),
elf_gc_allocate_got_offsets,
&gofarg);
return TRUE;
}
bfd_boolean
bfd_elf_gc_common_final_link (bfd *abfd, struct bfd_link_info *info)
{
if (!bfd_elf_gc_common_finalize_got_offsets (abfd, info))
return FALSE;
return bfd_elf_final_link (abfd, info);
}
bfd_boolean
bfd_elf_reloc_symbol_deleted_p (bfd_vma offset, void *cookie)
{
struct elf_reloc_cookie *rcookie = cookie;
if (rcookie->bad_symtab)
rcookie->rel = rcookie->rels;
for (; rcookie->rel < rcookie->relend; rcookie->rel++)
{
unsigned long r_symndx;
if (! rcookie->bad_symtab)
if (rcookie->rel->r_offset > offset)
return FALSE;
if (rcookie->rel->r_offset != offset)
continue;
r_symndx = rcookie->rel->r_info >> rcookie->r_sym_shift;
if (r_symndx == SHN_UNDEF)
return TRUE;
if (r_symndx >= rcookie->locsymcount
|| ELF_ST_BIND (rcookie->locsyms[r_symndx].st_info) != STB_LOCAL)
{
struct elf_link_hash_entry *h;
h = rcookie->sym_hashes[r_symndx - rcookie->extsymoff];
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if ((h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
&& elf_discarded_section (h->root.u.def.section))
return TRUE;
else
return FALSE;
}
else
{
asection *isec;
Elf_Internal_Sym *isym;
isym = &rcookie->locsyms[r_symndx];
if (isym->st_shndx < SHN_LORESERVE || isym->st_shndx > SHN_HIRESERVE)
{
isec = bfd_section_from_elf_index (rcookie->abfd, isym->st_shndx);
if (isec != NULL && elf_discarded_section (isec))
return TRUE;
}
}
return FALSE;
}
return FALSE;
}
bfd_boolean
bfd_elf_discard_info (bfd *output_bfd, struct bfd_link_info *info)
{
struct elf_reloc_cookie cookie;
asection *stab, *eh;
Elf_Internal_Shdr *symtab_hdr;
const struct elf_backend_data *bed;
bfd *abfd;
unsigned int count;
bfd_boolean ret = FALSE;
if (info->traditional_format
|| !is_elf_hash_table (info->hash))
return FALSE;
for (abfd = info->input_bfds; abfd != NULL; abfd = abfd->link_next)
{
if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
continue;
bed = get_elf_backend_data (abfd);
if ((abfd->flags & DYNAMIC) != 0)
continue;
eh = bfd_get_section_by_name (abfd, ".eh_frame");
if (info->relocatable
|| (eh != NULL
&& (eh->size == 0
|| bfd_is_abs_section (eh->output_section))))
eh = NULL;
stab = bfd_get_section_by_name (abfd, ".stab");
if (stab != NULL
&& (stab->size == 0
|| bfd_is_abs_section (stab->output_section)
|| stab->sec_info_type != ELF_INFO_TYPE_STABS))
stab = NULL;
if (stab == NULL
&& eh == NULL
&& bed->elf_backend_discard_info == NULL)
continue;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
cookie.abfd = abfd;
cookie.sym_hashes = elf_sym_hashes (abfd);
cookie.bad_symtab = elf_bad_symtab (abfd);
if (cookie.bad_symtab)
{
cookie.locsymcount = symtab_hdr->sh_size / bed->s->sizeof_sym;
cookie.extsymoff = 0;
}
else
{
cookie.locsymcount = symtab_hdr->sh_info;
cookie.extsymoff = symtab_hdr->sh_info;
}
if (bed->s->arch_size == 32)
cookie.r_sym_shift = 8;
else
cookie.r_sym_shift = 32;
cookie.locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
if (cookie.locsyms == NULL && cookie.locsymcount != 0)
{
cookie.locsyms = bfd_elf_get_elf_syms (abfd, symtab_hdr,
cookie.locsymcount, 0,
NULL, NULL, NULL);
if (cookie.locsyms == NULL)
return FALSE;
}
if (stab != NULL)
{
cookie.rels = NULL;
count = stab->reloc_count;
if (count != 0)
cookie.rels = _bfd_elf_link_read_relocs (abfd, stab, NULL, NULL,
info->keep_memory);
if (cookie.rels != NULL)
{
cookie.rel = cookie.rels;
cookie.relend = cookie.rels;
cookie.relend += count * bed->s->int_rels_per_ext_rel;
if (_bfd_discard_section_stabs (abfd, stab,
elf_section_data (stab)->sec_info,
bfd_elf_reloc_symbol_deleted_p,
&cookie))
ret = TRUE;
if (elf_section_data (stab)->relocs != cookie.rels)
free (cookie.rels);
}
}
if (eh != NULL)
{
cookie.rels = NULL;
count = eh->reloc_count;
if (count != 0)
cookie.rels = _bfd_elf_link_read_relocs (abfd, eh, NULL, NULL,
info->keep_memory);
cookie.rel = cookie.rels;
cookie.relend = cookie.rels;
if (cookie.rels != NULL)
cookie.relend += count * bed->s->int_rels_per_ext_rel;
if (_bfd_elf_discard_section_eh_frame (abfd, info, eh,
bfd_elf_reloc_symbol_deleted_p,
&cookie))
ret = TRUE;
if (cookie.rels != NULL
&& elf_section_data (eh)->relocs != cookie.rels)
free (cookie.rels);
}
if (bed->elf_backend_discard_info != NULL
&& (*bed->elf_backend_discard_info) (abfd, &cookie, info))
ret = TRUE;
if (cookie.locsyms != NULL
&& symtab_hdr->contents != (unsigned char *) cookie.locsyms)
{
if (! info->keep_memory)
free (cookie.locsyms);
else
symtab_hdr->contents = (unsigned char *) cookie.locsyms;
}
}
if (info->eh_frame_hdr
&& !info->relocatable
&& _bfd_elf_discard_section_eh_frame_hdr (output_bfd, info))
ret = TRUE;
return ret;
}
void
_bfd_elf_section_already_linked (bfd *abfd, struct bfd_section * sec)
{
flagword flags;
const char *name, *p;
struct bfd_section_already_linked *l;
struct bfd_section_already_linked_hash_entry *already_linked_list;
asection *group;
if (sec->output_section == bfd_abs_section_ptr)
return;
flags = sec->flags;
group = elf_sec_group (sec);
if ((flags & SEC_LINK_ONCE) == 0 && group == NULL)
return;
if (group)
{
if (elf_next_in_group (sec) == sec
&& (group->flags & SEC_LINK_ONCE) != 0)
sec = group;
else
return;
}
name = bfd_get_section_name (abfd, sec);
if (strncmp (name, ".gnu.linkonce.", sizeof (".gnu.linkonce.") - 1) == 0
&& (p = strchr (name + sizeof (".gnu.linkonce.") - 1, '.')) != NULL)
p++;
else
p = name;
already_linked_list = bfd_section_already_linked_table_lookup (p);
for (l = already_linked_list->entry; l != NULL; l = l->next)
{
if ((flags & SEC_GROUP) == (l->sec->flags & SEC_GROUP)
&& strcmp (name, l->sec->name) == 0
&& bfd_coff_get_comdat_section (l->sec->owner, l->sec) == NULL)
{
switch (flags & SEC_LINK_DUPLICATES)
{
default:
abort ();
case SEC_LINK_DUPLICATES_DISCARD:
break;
case SEC_LINK_DUPLICATES_ONE_ONLY:
(*_bfd_error_handler)
(_("%B: ignoring duplicate section `%A'"),
abfd, sec);
break;
case SEC_LINK_DUPLICATES_SAME_SIZE:
if (sec->size != l->sec->size)
(*_bfd_error_handler)
(_("%B: duplicate section `%A' has different size"),
abfd, sec);
break;
case SEC_LINK_DUPLICATES_SAME_CONTENTS:
if (sec->size != l->sec->size)
(*_bfd_error_handler)
(_("%B: duplicate section `%A' has different size"),
abfd, sec);
else if (sec->size != 0)
{
bfd_byte *sec_contents, *l_sec_contents;
if (!bfd_malloc_and_get_section (abfd, sec, &sec_contents))
(*_bfd_error_handler)
(_("%B: warning: could not read contents of section `%A'"),
abfd, sec);
else if (!bfd_malloc_and_get_section (l->sec->owner, l->sec,
&l_sec_contents))
(*_bfd_error_handler)
(_("%B: warning: could not read contents of section `%A'"),
l->sec->owner, l->sec);
else if (memcmp (sec_contents, l_sec_contents, sec->size) != 0)
(*_bfd_error_handler)
(_("%B: warning: duplicate section `%A' has different contents"),
abfd, sec);
if (sec_contents)
free (sec_contents);
if (l_sec_contents)
free (l_sec_contents);
}
break;
}
sec->output_section = bfd_abs_section_ptr;
sec->kept_section = l->sec;
if (flags & SEC_GROUP)
{
asection *first = elf_next_in_group (sec);
asection *s = first;
while (s != NULL)
{
s->output_section = bfd_abs_section_ptr;
s->kept_section = l->sec;
s = elf_next_in_group (s);
if (s == first)
break;
}
}
return;
}
}
if (group)
{
for (l = already_linked_list->entry; l != NULL; l = l->next)
if ((l->sec->flags & SEC_GROUP) == 0
&& bfd_coff_get_comdat_section (l->sec->owner, l->sec) == NULL
&& bfd_elf_match_symbols_in_sections (l->sec,
elf_next_in_group (sec)))
{
elf_next_in_group (sec)->output_section = bfd_abs_section_ptr;
elf_next_in_group (sec)->kept_section = l->sec;
group->output_section = bfd_abs_section_ptr;
break;
}
if (l == NULL)
return;
}
else
for (l = already_linked_list->entry; l != NULL; l = l->next)
if (l->sec->flags & SEC_GROUP)
{
asection *first = elf_next_in_group (l->sec);
if (first != NULL
&& elf_next_in_group (first) == first
&& bfd_elf_match_symbols_in_sections (first, sec))
{
sec->output_section = bfd_abs_section_ptr;
sec->kept_section = l->sec;
break;
}
}
bfd_section_already_linked_table_insert (already_linked_list, sec);
}
bfd_boolean
_bfd_elf_common_definition (Elf_Internal_Sym *sym)
{
return sym->st_shndx == SHN_COMMON;
}
unsigned int
_bfd_elf_common_section_index (asection *sec ATTRIBUTE_UNUSED)
{
return SHN_COMMON;
}
asection *
_bfd_elf_common_section (asection *sec ATTRIBUTE_UNUSED)
{
return bfd_com_section_ptr;
}