#include "safe-ctype.h"
static bfd_boolean elf_link_add_object_symbols (bfd *, struct bfd_link_info *);
static bfd_boolean elf_finalize_dynstr (bfd *, struct bfd_link_info *);
static bfd_boolean elf_collect_hash_codes (struct elf_link_hash_entry *,
void *);
static bfd_boolean elf_section_ignore_discarded_relocs (asection *);
bfd_boolean
elf_bfd_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 _bfd_elf_link_add_archive_symbols (abfd, info);
default:
bfd_set_error (bfd_error_wrong_format);
return FALSE;
}
}
static int
sort_symbol (const void *arg1, const void *arg2)
{
const struct elf_link_hash_entry *h1
= *(const struct elf_link_hash_entry **) arg1;
const struct elf_link_hash_entry *h2
= *(const struct elf_link_hash_entry **) arg2;
bfd_signed_vma vdiff = h1->root.u.def.value - h2->root.u.def.value;
if (vdiff)
return vdiff > 0 ? 1 : -1;
else
{
long sdiff = h1->root.u.def.section - h2->root.u.def.section;
if (sdiff)
return sdiff > 0 ? 1 : -1;
else
return 0;
}
}
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 *, const 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 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 dt_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)
{
bfd_set_error (bfd_error_invalid_operation);
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;
bfd_size_type prefix_len;
const char * gnu_warning_prefix = _("warning: ");
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->_raw_size = 0;
continue;
}
}
sz = bfd_section_size (abfd, s);
prefix_len = strlen (gnu_warning_prefix);
msg = bfd_alloc (abfd, prefix_len + sz + 1);
if (msg == NULL)
goto error_return;
strcpy (msg, gnu_warning_prefix);
if (! bfd_get_section_contents (abfd, s, msg + prefix_len, 0, sz))
goto error_return;
msg[prefix_len + 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->_raw_size = 0;
}
}
}
}
dt_needed = FALSE;
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;
bfd_boolean add_needed;
const char *name;
bfd_size_type oldsize;
bfd_size_type strindex;
struct bfd_link_needed_list *rpath = NULL, *runpath = NULL;
if ((s = abfd->sections) != NULL
&& s->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
goto error_return;
add_needed = TRUE;
name = bfd_get_filename (abfd);
if (elf_dt_name (abfd) != NULL)
{
name = elf_dt_name (abfd);
if (*name == '\0')
{
if (elf_dt_soname (abfd) != NULL)
dt_needed = TRUE;
add_needed = FALSE;
}
}
s = bfd_get_section_by_name (abfd, ".dynamic");
if (s != NULL)
{
Elf_External_Dyn *dynbuf = NULL;
Elf_External_Dyn *extdyn;
Elf_External_Dyn *extdynend;
int elfsec;
unsigned long shlink;
dynbuf = bfd_malloc (s->_raw_size);
if (dynbuf == NULL)
goto error_return;
if (! bfd_get_section_contents (abfd, s, dynbuf, 0, s->_raw_size))
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;
extdyn = dynbuf;
extdynend = extdyn + s->_raw_size / sizeof (Elf_External_Dyn);
for (; extdyn < extdynend; extdyn++)
{
Elf_Internal_Dyn dyn;
elf_swap_dyn_in (abfd, extdyn, &dyn);
if (dyn.d_tag == DT_SONAME)
{
unsigned int tagv = dyn.d_un.d_val;
name = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
if (name == 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 (! _bfd_elf_link_create_dynamic_sections (abfd, info))
goto error_return;
if (add_needed)
{
oldsize = _bfd_elf_strtab_size (hash_table->dynstr);
strindex = _bfd_elf_strtab_add (hash_table->dynstr, name, FALSE);
if (strindex == (bfd_size_type) -1)
goto error_return;
if (oldsize == _bfd_elf_strtab_size (hash_table->dynstr))
{
asection *sdyn;
Elf_External_Dyn *dyncon, *dynconend;
sdyn = bfd_get_section_by_name (hash_table->dynobj, ".dynamic");
BFD_ASSERT (sdyn != NULL);
dyncon = (Elf_External_Dyn *) sdyn->contents;
dynconend = (Elf_External_Dyn *) (sdyn->contents +
sdyn->_raw_size);
for (; dyncon < dynconend; dyncon++)
{
Elf_Internal_Dyn dyn;
elf_swap_dyn_in (hash_table->dynobj, dyncon, & dyn);
if (dyn.d_tag == DT_NEEDED
&& dyn.d_un.d_val == strindex)
{
_bfd_elf_strtab_delref (hash_table->dynstr, strindex);
return TRUE;
}
}
}
if (! elf_add_dynamic_entry (info, DT_NEEDED, strindex))
goto error_return;
}
if (*name == '\0')
name = basename (bfd_get_filename (abfd));
elf_dt_name (abfd) = name;
}
if (! dynamic || elf_dynsymtab (abfd) == 0)
hdr = &elf_tdata (abfd)->symtab_hdr;
else
hdr = &elf_tdata (abfd)->dynsymtab_hdr;
symcount = hdr->sh_size / sizeof (Elf_External_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))
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;
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;
unsigned int old_alignment;
bfd *old_bfd;
override = FALSE;
flags = BSF_NO_FLAGS;
sec = NULL;
value = isym->st_value;
*sym_hash = NULL;
bind = ELF_ST_BIND (isym->st_info);
if (bind == STB_LOCAL)
{
continue;
}
else if (bind == STB_GLOBAL)
{
if (isym->st_shndx != SHN_UNDEF
&& isym->st_shndx != SHN_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 = section_from_elf_index (abfd, isym->st_shndx);
if (sec == NULL)
sec = bfd_abs_section_ptr;
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 (abfd, ".tcommon");
if (tcomm == NULL
|| !bfd_set_section_flags (abfd, tcomm, (SEC_ALLOC
| SEC_IS_COMMON
| SEC_LINKER_CREATED
| SEC_THREAD_LOCAL)))
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;
if (is_elf_hash_table (hash_table))
{
Elf_Internal_Versym iver;
unsigned int vernum = 0;
bfd_boolean skip;
if (ever != NULL)
{
_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)))
{
const char *verstr;
size_t namelen, verlen, newlen;
char *newname, *p;
if (isym->st_shndx != SHN_UNDEF)
{
if (vernum > elf_tdata (abfd)->dynverdef_hdr.sh_info)
{
(*_bfd_error_handler)
(_("%s: %s: invalid version %u (max %d)"),
bfd_archive_filename (abfd), name, vernum,
elf_tdata (abfd)->dynverdef_hdr.sh_info);
bfd_set_error (bfd_error_bad_value);
goto error_free_vers;
}
else if (vernum > 1)
verstr =
elf_tdata (abfd)->verdef[vernum - 1].vd_nodename;
else
verstr = "";
}
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)
(_("%s: %s: invalid needed version %d"),
bfd_archive_filename (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,
sym_hash, &skip, &override,
&type_change_ok, &size_change_ok,
dt_needed))
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->weakdef == NULL)
{
h->weakdef = weaks;
weaks = h;
new_weakdef = TRUE;
}
if (isym->st_shndx == SHN_COMMON
&& h->root.type == bfd_link_hash_common)
{
unsigned int align;
align = bfd_log2 (isym->st_value);
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))
{
int old_flags;
bfd_boolean dynsym;
int new_flag;
if ((old_alignment || isym->st_shndx == SHN_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 %s is smaller than %u in %s"),
1 << normal_align,
name,
bfd_archive_filename (normal_bfd),
1 << common_align,
bfd_archive_filename (common_bfd));
}
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 %s to %lu in %s"),
name, (unsigned long) h->size,
bfd_archive_filename (old_bfd),
(unsigned long) isym->st_size,
bfd_archive_filename (abfd));
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 %s"),
name, h->type, ELF_ST_TYPE (isym->st_info),
bfd_archive_filename (abfd));
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 (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;
}
old_flags = h->elf_link_hash_flags;
dynsym = FALSE;
if (! dynamic)
{
if (! definition)
{
new_flag = ELF_LINK_HASH_REF_REGULAR;
if (bind != STB_WEAK)
new_flag |= ELF_LINK_HASH_REF_REGULAR_NONWEAK;
}
else
new_flag = ELF_LINK_HASH_DEF_REGULAR;
if (! info->executable
|| (old_flags & (ELF_LINK_HASH_DEF_DYNAMIC
| ELF_LINK_HASH_REF_DYNAMIC)) != 0)
dynsym = TRUE;
}
else
{
if (! definition)
new_flag = ELF_LINK_HASH_REF_DYNAMIC;
else
new_flag = ELF_LINK_HASH_DEF_DYNAMIC;
if ((old_flags & (ELF_LINK_HASH_DEF_REGULAR
| ELF_LINK_HASH_REF_REGULAR)) != 0
|| (h->weakdef != NULL
&& ! new_weakdef
&& h->weakdef->dynindx != -1))
dynsym = TRUE;
}
h->elf_link_hash_flags |= new_flag;
if (definition || h->root.type == bfd_link_hash_common)
if (!_bfd_elf_add_default_symbol (abfd, info, h, name, isym,
&sec, &value, &dynsym,
override, dt_needed))
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->weakdef != NULL
&& ! new_weakdef
&& h->weakdef->dynindx == -1)
{
if (! _bfd_elf_link_record_dynamic_symbol (info, h->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);
break;
}
if (dt_needed && definition
&& (h->elf_link_hash_flags
& ELF_LINK_HASH_REF_REGULAR) != 0)
{
bfd_size_type oldsize;
bfd_size_type strindex;
dt_needed = FALSE;
oldsize = _bfd_elf_strtab_size (hash_table->dynstr);
strindex = _bfd_elf_strtab_add (hash_table->dynstr,
elf_dt_soname (abfd), FALSE);
if (strindex == (bfd_size_type) -1)
goto error_free_vers;
if (oldsize == _bfd_elf_strtab_size (hash_table->dynstr))
{
asection *sdyn;
Elf_External_Dyn *dyncon, *dynconend;
sdyn = bfd_get_section_by_name (hash_table->dynobj,
".dynamic");
BFD_ASSERT (sdyn != NULL);
dyncon = (Elf_External_Dyn *) sdyn->contents;
dynconend = (Elf_External_Dyn *) (sdyn->contents +
sdyn->_raw_size);
for (; dyncon < dynconend; dyncon++)
{
Elf_Internal_Dyn dyn;
elf_swap_dyn_in (hash_table->dynobj,
dyncon, &dyn);
BFD_ASSERT (dyn.d_tag != DT_NEEDED ||
dyn.d_un.d_val != strindex);
}
}
if (! elf_add_dynamic_entry (info, DT_NEEDED, strindex))
goto error_free_vers;
}
}
}
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 (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 *),
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->weakdef;
hlook->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 - h->root.u.def.section;
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->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_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 (! info->relocatable
&& ! dynamic
&& is_elf_hash_table (hash_table))
{
asection *s;
for (s = abfd->sections; s != NULL; s = s->next)
if ((s->flags & SEC_MERGE) != 0
&& !bfd_is_abs_section (s->output_section))
{
struct bfd_elf_section_data *secdata;
secdata = elf_section_data (s);
if (! _bfd_merge_section (abfd,
& hash_table->merge_info,
s, &secdata->sec_info))
goto error_return;
else if (secdata->sec_info)
s->sec_info_type = ELF_INFO_TYPE_MERGE;
}
}
if (is_elf_hash_table (hash_table))
{
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;
}
bfd_boolean
elf_add_dynamic_entry (struct bfd_link_info *info, bfd_vma tag, bfd_vma val)
{
Elf_Internal_Dyn dyn;
bfd *dynobj;
asection *s;
bfd_size_type newsize;
bfd_byte *newcontents;
if (! is_elf_hash_table (info->hash))
return FALSE;
dynobj = elf_hash_table (info)->dynobj;
s = bfd_get_section_by_name (dynobj, ".dynamic");
BFD_ASSERT (s != NULL);
newsize = s->_raw_size + sizeof (Elf_External_Dyn);
newcontents = bfd_realloc (s->contents, newsize);
if (newcontents == NULL)
return FALSE;
dyn.d_tag = tag;
dyn.d_un.d_val = val;
elf_swap_dyn_out (dynobj, &dyn,
(Elf_External_Dyn *) (newcontents + s->_raw_size));
s->_raw_size = newsize;
s->contents = newcontents;
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 ;
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) * (ARCH_SIZE / 8);
# if 1
for (j = 0; j < i; ++j)
max += counts[j] * counts[j];
fact = i / (BFD_TARGET_PAGESIZE / (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 / (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
NAME(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;
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)
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_refcount = elf_hash_table (info)->init_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;
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
|| ! elf_add_dynamic_entry (info, DT_SONAME, soname_indx))
return FALSE;
}
if (info->symbolic)
{
if (! 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 (info->new_dtags)
_bfd_elf_strtab_addref (elf_hash_table (info)->dynstr, indx);
if (indx == (bfd_size_type) -1
|| ! elf_add_dynamic_entry (info, DT_RPATH, indx)
|| (info->new_dtags
&& ! 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
|| ! 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
|| ! 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->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC) == 0)
&& (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->elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR
| ELF_LINK_HASH_DEF_REGULAR)) != 0)
{
if (! 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->elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR
| ELF_LINK_HASH_DEF_REGULAR)) != 0)
{
if (! elf_add_dynamic_entry (info, DT_FINI, 0))
return FALSE;
}
if (bfd_get_section_by_name (output_bfd, ".preinit_array") != NULL)
{
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)
(_("%s: .preinit_array section is not allowed in DSO"),
bfd_archive_filename (sub));
break;
}
bfd_set_error (bfd_error_nonrepresentable_section);
return FALSE;
}
if (!elf_add_dynamic_entry (info, DT_PREINIT_ARRAY, 0)
|| !elf_add_dynamic_entry (info, DT_PREINIT_ARRAYSZ, 0))
return FALSE;
}
if (bfd_get_section_by_name (output_bfd, ".init_array") != NULL)
{
if (!elf_add_dynamic_entry (info, DT_INIT_ARRAY, 0)
|| !elf_add_dynamic_entry (info, DT_INIT_ARRAYSZ, 0))
return FALSE;
}
if (bfd_get_section_by_name (output_bfd, ".fini_array") != NULL)
{
if (!elf_add_dynamic_entry (info, DT_FINI_ARRAY, 0)
|| !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 (! elf_add_dynamic_entry (info, DT_HASH, 0)
|| ! elf_add_dynamic_entry (info, DT_STRTAB, 0)
|| ! elf_add_dynamic_entry (info, DT_SYMTAB, 0)
|| ! elf_add_dynamic_entry (info, DT_STRSZ, strsize)
|| ! elf_add_dynamic_entry (info, DT_SYMENT,
sizeof (Elf_External_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)
{
bfd_size_type dynsymcount;
asection *s;
size_t bucketcount = 0;
size_t hash_entry_size;
unsigned int dtagcount;
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)
_bfd_strip_section_from_output (info, s);
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;
cdefs = 0;
size = 0;
size += sizeof (Elf_External_Verdef);
size += sizeof (Elf_External_Verdaux);
++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->_raw_size = size;
s->contents = bfd_alloc (output_bfd, s->_raw_size);
if (s->contents == NULL && s->_raw_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;
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;
}
else
{
const char *name;
bfd_size_type indx;
name = basename (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);
_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;
struct elf_link_hash_entry *h;
struct bfd_link_hash_entry *bh;
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->elf_link_hash_flags &= ~ ELF_LINK_NON_ELF;
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
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 + 1;
def.vd_cnt = cdeps + 1;
def.vd_hash = bfd_elf_hash (t->name);
def.vd_aux = sizeof (Elf_External_Verdef);
if (t->next != NULL)
def.vd_next = (sizeof (Elf_External_Verdef)
+ (cdeps + 1) * 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);
defaux.vda_name = h->dynstr_index;
_bfd_elf_strtab_addref (elf_hash_table (info)->dynstr,
h->dynstr_index);
if (t->deps == NULL)
defaux.vda_next = 0;
else
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 (! elf_add_dynamic_entry (info, DT_VERDEF, 0)
|| ! 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 (! elf_add_dynamic_entry (info, DT_FLAGS, info->flags))
return FALSE;
}
else if (info->flags & DF_BIND_NOW)
{
if (! 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 (! 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)
_bfd_strip_section_from_output (info, s);
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->_raw_size = size;
s->contents = bfd_alloc (output_bfd, s->_raw_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)
: basename (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 (! elf_add_dynamic_entry (info, DT_VERNEED, 0)
|| ! elf_add_dynamic_entry (info, DT_VERNEEDNUM, crefs))
return FALSE;
elf_tdata (output_bfd)->cverrefs = crefs;
}
}
dynsymcount = _bfd_elf_link_renumber_dynsyms (output_bfd, info);
s = bfd_get_section_by_name (dynobj, ".gnu.version");
BFD_ASSERT (s != NULL);
if (dynsymcount == 0
|| (verdefs == NULL && elf_tdata (output_bfd)->verref == NULL))
{
_bfd_strip_section_from_output (info, s);
dynsymcount = _bfd_elf_link_renumber_dynsyms (output_bfd, info);
}
else
{
s->_raw_size = dynsymcount * sizeof (Elf_External_Versym);
s->contents = bfd_zalloc (output_bfd, s->_raw_size);
if (s->contents == NULL)
return FALSE;
if (! elf_add_dynamic_entry (info, DT_VERSYM, 0))
return FALSE;
}
s = bfd_get_section_by_name (dynobj, ".dynsym");
BFD_ASSERT (s != NULL);
s->_raw_size = dynsymcount * sizeof (Elf_External_Sym);
s->contents = bfd_alloc (output_bfd, s->_raw_size);
if (s->contents == NULL && s->_raw_size != 0)
return FALSE;
if (dynsymcount != 0)
{
Elf_Internal_Sym isym;
isym.st_value = 0;
isym.st_size = 0;
isym.st_name = 0;
isym.st_info = 0;
isym.st_other = 0;
isym.st_shndx = 0;
elf_swap_symbol_out (output_bfd, &isym, s->contents, 0);
}
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->_raw_size = ((2 + bucketcount + dynsymcount) * hash_entry_size);
s->contents = bfd_zalloc (output_bfd, s->_raw_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->_raw_size = _bfd_elf_strtab_size (elf_hash_table (info)->dynstr);
for (dtagcount = 0; dtagcount <= info->spare_dynamic_tags; ++dtagcount)
if (! elf_add_dynamic_entry (info, DT_NULL, 0))
return FALSE;
}
return TRUE;
}
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_local_dynamic_entry *entry;
struct elf_strtab_hash *dynstr = elf_hash_table (info)->dynstr;
bfd *dynobj = elf_hash_table (info)->dynobj;
asection *sdyn;
bfd_size_type size;
Elf_External_Dyn *dyncon, *dynconend;
_bfd_elf_strtab_finalize (dynstr);
size = _bfd_elf_strtab_size (dynstr);
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
BFD_ASSERT (sdyn != NULL);
dyncon = (Elf_External_Dyn *) sdyn->contents;
dynconend = (Elf_External_Dyn *) (sdyn->contents +
sdyn->_raw_size);
for (; dyncon < dynconend; dyncon++)
{
Elf_Internal_Dyn dyn;
elf_swap_dyn_in (dynobj, dyncon, & dyn);
switch (dyn.d_tag)
{
case DT_STRSZ:
dyn.d_un.d_val = size;
elf_swap_dyn_out (dynobj, & dyn, dyncon);
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);
elf_swap_dyn_out (dynobj, & dyn, dyncon);
break;
default:
break;
}
}
for (entry = elf_hash_table (info)->dynlocal; entry ; entry = entry->next)
entry->isym.st_name = _bfd_elf_strtab_offset (dynstr,
entry->isym.st_name);
elf_link_hash_traverse (elf_hash_table (info),
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 = (bfd_byte *) s->contents;
do
{
_bfd_elf_swap_verdef_in (output_bfd, (Elf_External_Verdef *) p,
&def);
p += sizeof (Elf_External_Verdef);
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 = (bfd_byte *) 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;
}
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;
Elf_External_Sym *external_syms;
Elf_External_Sym_Shndx *locsym_shndx;
Elf_Internal_Sym *internal_syms;
long *indices;
asection **sections;
Elf_External_Sym *symbuf;
Elf_External_Sym_Shndx *symshndxbuf;
size_t symbuf_count;
size_t symbuf_size;
size_t shndxbuf_size;
};
static bfd_boolean elf_link_output_sym
(struct elf_final_link_info *, const char *, Elf_Internal_Sym *, asection *,
struct elf_link_hash_entry *);
static bfd_boolean elf_link_flush_output_syms
(struct elf_final_link_info *);
static bfd_boolean elf_link_output_extsym
(struct elf_link_hash_entry *, void *);
static bfd_boolean elf_link_input_bfd
(struct elf_final_link_info *, bfd *);
static bfd_boolean elf_reloc_link_order
(bfd *, struct bfd_link_info *, asection *, struct bfd_link_order *);
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 *);
if (rel_hdr->sh_entsize == sizeof (Elf_External_Rel))
{
swap_in = bed->s->swap_reloc_in;
swap_out = bed->s->swap_reloc_out;
}
else if (rel_hdr->sh_entsize == sizeof (Elf_External_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 ();
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 = ELF_R_INFO ((*rel_hash)->indx,
ELF_R_TYPE (irela[j].r_info));
(*swap_out) (abfd, irela, erela);
}
}
struct elf_link_sort_rela
{
bfd_vma offset;
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 (ELF_R_SYM (a->rela->r_info) < ELF_R_SYM (b->rela->r_info))
return -1;
if (ELF_R_SYM (a->rela->r_info) > ELF_R_SYM (b->rela->r_info))
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->offset < b->offset)
return -1;
if (a->offset > b->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;
reldyn = bfd_get_section_by_name (abfd, ".rela.dyn");
if (reldyn == NULL || reldyn->_raw_size == 0)
{
reldyn = bfd_get_section_by_name (abfd, ".rel.dyn");
if (reldyn == NULL || reldyn->_raw_size == 0)
return 0;
ext_size = sizeof (Elf_External_Rel);
swap_in = bed->s->swap_reloc_in;
swap_out = bed->s->swap_reloc_out;
}
else
{
ext_size = sizeof (Elf_External_Rela);
swap_in = bed->s->swap_reloca_in;
swap_out = bed->s->swap_reloca_out;
}
count = reldyn->_raw_size / ext_size;
size = 0;
for (lo = reldyn->link_order_head; lo != NULL; lo = lo->next)
if (lo->type == bfd_indirect_link_order)
{
asection *o = lo->u.indirect.section;
size += o->_raw_size;
}
if (size != reldyn->_raw_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;
}
for (lo = reldyn->link_order_head; 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->_raw_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);
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 (ELF_R_SYM (sp->rela->r_info) != ELF_R_SYM (sq->rela->r_info))
sq = sp;
sp->offset = sq->rela->r_offset;
}
qsort (s_non_relative, count - ret, sort_elt, elf_link_sort_cmp2);
for (lo = reldyn->link_order_head; 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->_raw_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;
}
bfd_boolean
elf_bfd_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 = 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->link_order_head; 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->_raw_size > max_contents_size)
max_contents_size = sec->_raw_size;
if (sec->_cooked_size > max_contents_size)
max_contents_size = sec->_cooked_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
/ sizeof (Elf_External_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 == sizeof (Elf_External_Rel)
|| entsize1 == sizeof (Elf_External_Rela));
same_size = (!o->use_rela_p
== (entsize1 == sizeof (Elf_External_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 == sizeof (Elf_External_Rel)
|| entsize2 == sizeof (Elf_External_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 = sizeof (Elf_External_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 *= sizeof (Elf_External_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 0
elfsym.st_value = 0;
elfsym.st_size = 0;
elfsym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE);
elfsym.st_other = 0;
elfsym.st_shndx = SHN_ABS;
if (! elf_link_output_sym (&finfo, bfd_get_filename (abfd),
&elfsym, bfd_abs_section_ptr, NULL))
goto error_return;
#endif
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 = 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 * sizeof (Elf_External_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->_raw_size;
if (size == 0 && (sec->flags & SEC_HAS_CONTENTS) == 0)
{
struct bfd_link_order *o;
for (o = sec->link_order_head; 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 (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->link_order_head; 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;
Elf_External_Sym *dynsym =
(Elf_External_Sym *) finfo.dynsym_sec->contents;
long last_local = 0;
if (info->shared)
{
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;
Elf_External_Sym *dest;
indx = elf_section_data (s)->this_idx;
BFD_ASSERT (indx > 0);
sym.st_shndx = indx;
sym.st_value = s->vma;
dest = dynsym + elf_section_data (s)->dynindx;
elf_swap_symbol_out (abfd, &sym, dest, 0);
}
last_local = bfd_count_sections (abfd);
}
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;
Elf_External_Sym *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;
elf_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))
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)
{
Elf_External_Dyn *dyncon, *dynconend;
o = bfd_get_section_by_name (dynobj, ".dynamic");
BFD_ASSERT (o != NULL);
dyncon = (Elf_External_Dyn *) o->contents;
dynconend = (Elf_External_Dyn *) (o->contents + o->_raw_size);
for (; dyncon < dynconend; dyncon++)
{
Elf_Internal_Dyn dyn;
const char *name;
unsigned int type;
elf_swap_dyn_in (dynobj, dyncon, &dyn);
switch (dyn.d_tag)
{
default:
break;
case DT_NULL:
if (relativecount > 0 && dyncon + 1 < 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: break;
}
if (dyn.d_tag != DT_NULL)
{
dyn.d_un.d_val = relativecount;
elf_swap_dyn_out (dynobj, &dyn, dyncon);
relativecount = 0;
}
}
break;
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;
}
elf_swap_dyn_out (dynobj, &dyn, dyncon);
}
}
break;
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)
(_("%s: could not find output section %s"),
bfd_get_filename (abfd), name);
goto error_return;
}
if (o->_raw_size == 0)
(*_bfd_error_handler)
(_("warning: %s section has zero size"), name);
dyn.d_un.d_val = o->_raw_size;
elf_swap_dyn_out (dynobj, &dyn, dyncon);
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)
(_("%s: could not find output section %s"),
bfd_get_filename (abfd), name);
goto error_return;
}
dyn.d_un.d_ptr = o->vma;
elf_swap_dyn_out (dynobj, &dyn, dyncon);
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;
}
}
}
elf_swap_dyn_out (dynobj, &dyn, dyncon);
break;
}
}
}
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->_raw_size == 0
|| o->output_section == bfd_abs_section_ptr)
continue;
if ((o->flags & SEC_LINKER_CREATED) == 0)
{
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->_raw_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 != 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;
}
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)
{
Elf_External_Sym *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 *);
output_symbol_hook = get_elf_backend_data (finfo->output_bfd)->
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))
return FALSE;
}
dest = finfo->symbuf + finfo->symbuf_count;
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);
}
elf_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_flush_output_syms (struct elf_final_link_info *finfo)
{
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 * sizeof (Elf_External_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_check_versioned_symbol (struct bfd_link_info *info,
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_dt_soname (abfd) == NULL)
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 / sizeof (Elf_External_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;
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->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
return TRUE;
}
else
{
if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
return TRUE;
}
if (h->root.type == bfd_link_hash_undefined
&& (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0
&& (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0
&& ! elf_link_check_versioned_symbol (finfo->info, 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->elf_link_hash_flags
& (ELF_LINK_FORCED_LOCAL | ELF_LINK_HASH_REF_DYNAMIC | ELF_LINK_DYNAMIC_DEF | ELF_LINK_DYNAMIC_WEAK))
== (ELF_LINK_FORCED_LOCAL | ELF_LINK_HASH_REF_DYNAMIC)
&& ! elf_link_check_versioned_symbol (finfo->info, h))
{
(*_bfd_error_handler)
(_("%s: %s symbol `%s' in %s is referenced by DSO"),
bfd_get_filename (finfo->output_bfd),
ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
? "internal"
: ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
? "hidden" : "local",
h->root.root.string,
bfd_archive_filename (h->root.u.def.section->owner));
eoinfo->failed = TRUE;
return FALSE;
}
if (h->indx == -2)
strip = FALSE;
else if (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
|| (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0)
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
&& (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
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->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
return TRUE;
sym.st_value = 0;
sym.st_size = h->size;
sym.st_other = h->other;
if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
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)
(_("%s: could not find output section %s for input section %s"),
bfd_get_filename (finfo->output_bfd),
input_sec->output_section->name,
input_sec->name);
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 = SHN_COMMON;
sym.st_value = 1 << h->root.u.c.p->alignment_power;
break;
case bfd_link_hash_indirect:
return TRUE;
}
if ((h->dynindx != -1
|| (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
&& ((finfo->info->shared
&& (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak))
|| (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
&& elf_hash_table (finfo->info)->dynamic_sections_created)
{
const struct elf_backend_data *bed;
bed = get_elf_backend_data (finfo->output_bfd);
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->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) != 0
&& (ELF_ST_BIND (sym.st_info) == STB_GLOBAL
|| ELF_ST_BIND (sym.st_info) == STB_WEAK))
{
int bindtype;
if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK) != 0)
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->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
{
(*_bfd_error_handler)
(_("%s: %s symbol `%s' isn't defined"),
bfd_get_filename (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;
Elf_External_Sym *esym;
sym.st_name = h->dynstr_index;
esym = (Elf_External_Sym *) finfo->dynsym_sec->contents + h->dynindx;
elf_swap_symbol_out (finfo->output_bfd, &sym, esym, 0);
bucketcount = elf_hash_table (finfo->info)->bucketcount;
bucket = h->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->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
{
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 ((h->elf_link_hash_flags & ELF_LINK_HIDDEN) != 0)
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_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
|| bed->elf_backend_emit_relocs);
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
if (elf_bad_symtab (input_bfd))
{
locsymcount = symtab_hdr->sh_size / sizeof (Elf_External_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 = 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, 0);
}
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;
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->_raw_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
{
contents = finfo->contents;
if (! bfd_get_section_contents (input_bfd, o, contents, 0,
o->_raw_size))
return FALSE;
}
if ((o->flags & SEC_RELOC) != 0)
{
Elf_Internal_Rela *internal_relocs;
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 (!elf_section_ignore_discarded_relocs (o))
{
Elf_Internal_Rela *rel, *relend;
rel = internal_relocs;
relend = rel + o->reloc_count * bed->s->int_rels_per_ext_rel;
for ( ; rel < relend; rel++)
{
unsigned long r_symndx = ELF_R_SYM (rel->r_info);
asection *sec;
if (r_symndx >= locsymcount
|| (elf_bad_symtab (input_bfd)
&& finfo->sections[r_symndx] == NULL))
{
struct elf_link_hash_entry *h;
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;
sec = h->root.u.def.section;
if ((h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
&& elf_discarded_section (sec))
{
if ((o->flags & SEC_DEBUGGING) != 0)
{
BFD_ASSERT (r_symndx != 0);
if ((o->flags & SEC_DEBUGGING) != 0
&& sec->kept_section != NULL
&& sec->_raw_size == sec->kept_section->_raw_size)
h->root.u.def.section
= sec->kept_section;
else
memset (rel, 0, sizeof (*rel));
}
else
finfo->info->callbacks->error_handler
(LD_DEFINITION_IN_DISCARDED_SECTION,
_("%T: discarded in section `%s' from %s\n"),
h->root.root.string,
h->root.root.string,
h->root.u.def.section->name,
bfd_archive_filename (h->root.u.def.section->owner));
}
}
else
{
sec = finfo->sections[r_symndx];
if (sec != NULL && elf_discarded_section (sec))
{
if ((o->flags & SEC_DEBUGGING) != 0
|| (sec->flags & SEC_LINK_ONCE) != 0)
{
BFD_ASSERT (r_symndx != 0);
if ((o->flags & SEC_DEBUGGING) != 0
&& sec->kept_section != NULL
&& sec->_raw_size == sec->kept_section->_raw_size)
finfo->sections[r_symndx]
= sec->kept_section;
else
{
rel->r_info
= ELF_R_INFO (0, ELF_R_TYPE (rel->r_info));
rel->r_addend = 0;
}
}
else
{
static int count;
int ok;
char *buf;
ok = asprintf (&buf, "local symbol %d",
count++);
if (ok <= 0)
buf = (char *) "local symbol";
finfo->info->callbacks->error_handler
(LD_DEFINITION_IN_DISCARDED_SECTION,
_("%T: discarded in section `%s' from %s\n"),
buf, buf, sec->name,
bfd_archive_filename (input_bfd));
if (ok != -1)
free (buf);
}
}
}
}
}
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;
Elf_Internal_Shdr *input_rel_hdr, *input_rel_hdr2;
unsigned int next_erel;
bfd_boolean (*reloc_emitter)
(bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *);
bfd_boolean rela_normal;
input_rel_hdr = &elf_section_data (o)->rel_hdr;
rela_normal = (bed->rela_normal
&& (input_rel_hdr->sh_entsize
== sizeof (Elf_External_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);
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 = ELF_R_SYM (irela->r_info);
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)
{
if (bfd_is_abs_section (sec)
|| (sec != NULL
&& bfd_is_abs_section (sec->output_section)))
r_symndx = 0;
else if (sec == NULL || sec->owner == NULL)
{
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
else
{
r_symndx = sec->output_section->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 = ELF_R_INFO (r_symndx,
ELF_R_TYPE (irela->r_info));
}
if (bed->elf_backend_emit_relocs
&& !(finfo->info->relocatable
|| finfo->info->emitrelocations))
reloc_emitter = bed->elf_backend_emit_relocs;
else
reloc_emitter = _bfd_elf_link_output_relocs;
if (input_rel_hdr->sh_size != 0
&& ! (*reloc_emitter) (output_bfd, o, input_rel_hdr,
internal_relocs))
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);
if (! (*reloc_emitter) (output_bfd, o, input_rel_hdr2,
internal_relocs))
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:
{
bfd_size_type sec_size;
sec_size = (o->_cooked_size != 0 ? o->_cooked_size : o->_raw_size);
if (! (o->flags & SEC_EXCLUDE)
&& ! bfd_set_section_contents (output_bfd, o->output_section,
contents,
(file_ptr) o->output_offset,
sec_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, sym_name, howto->name, addend, NULL, NULL, 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;
}
irel[0].r_info = ELF_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
* sizeof (Elf_External_Rel));
(*bed->s->swap_reloc_out) (output_bfd, irel, erel);
}
else
{
irel[0].r_addend = addend;
erel += (elf_section_data (output_section)->rel_count
* sizeof (Elf_External_Rela));
(*bed->s->swap_reloca_out) (output_bfd, irel, erel);
}
++elf_section_data (output_section)->rel_count;
return TRUE;
}
static bfd_boolean elf_gc_sweep_symbol
(struct elf_link_hash_entry *, void *);
static bfd_boolean elf_gc_allocate_got_offsets
(struct elf_link_hash_entry *, void *);
typedef asection * (*gc_mark_hook_fn)
(asection *, struct bfd_link_info *, Elf_Internal_Rela *,
struct elf_link_hash_entry *, Elf_Internal_Sym *);
static bfd_boolean
elf_gc_mark (struct bfd_link_info *info,
asection *sec,
gc_mark_hook_fn gc_mark_hook)
{
bfd_boolean ret;
asection *group_sec;
sec->gc_mark = 1;
group_sec = elf_section_data (sec)->next_in_group;
if (group_sec && !group_sec->gc_mark)
if (!elf_gc_mark (info, group_sec, gc_mark_hook))
return FALSE;
ret = TRUE;
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;
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 / sizeof (Elf_External_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;
for (rel = relstart; rel < relend; rel++)
{
unsigned long r_symndx;
asection *rsec;
struct elf_link_hash_entry *h;
r_symndx = ELF_R_SYM (rel->r_info);
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];
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 (!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;
}
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_LINKER_CREATED)
|| (o->flags & SEC_DEBUGGING))
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) && o->reloc_count > 0)
{
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);
elf_hash_table (info)->dynsymcount = i;
}
return TRUE;
}
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;
}
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_parent == NULL)
return TRUE;
if (h->vtable_parent == (struct elf_link_hash_entry *) -1)
return TRUE;
if (h->vtable_entries_used && h->vtable_entries_used[-1])
return TRUE;
elf_gc_propagate_vtable_entries_used (h->vtable_parent, okp);
if (h->vtable_entries_used == NULL)
{
h->vtable_entries_used = h->vtable_parent->vtable_entries_used;
h->vtable_entries_size = h->vtable_parent->vtable_entries_size;
}
else
{
size_t n;
bfd_boolean *cu, *pu;
cu = h->vtable_entries_used;
cu[-1] = TRUE;
pu = h->vtable_parent->vtable_entries_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_entries_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_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_entries_used
&& (rel->r_offset - hstart) < h->vtable_entries_size)
{
bfd_vma entry = (rel->r_offset - hstart) >> log_file_align;
if (h->vtable_entries_used[entry])
continue;
}
rel->r_offset = rel->r_info = rel->r_addend = 0;
}
return TRUE;
}
bfd_boolean
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)
|| elf_hash_table (info)->dynamic_sections_created)
{
(*_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;
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)
if (!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
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;
extsymcount = elf_tdata (abfd)->symtab_hdr.sh_size/sizeof (Elf_External_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) ("%s: %s+%lu: No symbol found for INHERIT",
bfd_archive_filename (abfd), sec->name,
(unsigned long) offset);
bfd_set_error (bfd_error_invalid_operation);
return FALSE;
win:
if (!h)
{
child->vtable_parent = (struct elf_link_hash_entry *) -1;
}
else
child->vtable_parent = h;
return TRUE;
}
bfd_boolean
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 (addend >= h->vtable_entries_size)
{
size_t size, bytes, file_align;
bfd_boolean *ptr = h->vtable_entries_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_entries_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_entries_used = ptr + 1;
h->vtable_entries_size = size;
}
h->vtable_entries_used[addend >> log_file_align] = TRUE;
return TRUE;
}
bfd_boolean
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;
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 / sizeof (Elf_External_Sym);
else
locsymcount = symtab_hdr->sh_info;
for (j = 0; j < locsymcount; ++j)
{
if (local_got[j] > 0)
{
local_got[j] = gotoff;
gotoff += ARCH_SIZE / 8;
}
else
local_got[j] = (bfd_vma) -1;
}
}
elf_link_hash_traverse (elf_hash_table (info),
elf_gc_allocate_got_offsets,
&gotoff);
return TRUE;
}
static bfd_boolean
elf_gc_allocate_got_offsets (struct elf_link_hash_entry *h, void *offarg)
{
bfd_vma *off = offarg;
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 = off[0];
off[0] += ARCH_SIZE / 8;
}
else
h->got.offset = (bfd_vma) -1;
return TRUE;
}
bfd_boolean
elf_gc_common_final_link (bfd *abfd, struct bfd_link_info *info)
{
if (!elf_gc_common_finalize_got_offsets (abfd, info))
return FALSE;
return elf_bfd_final_link (abfd, info);
}
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->elf_hash_value = ha;
if (alc != NULL)
free (alc);
return TRUE;
}
bfd_boolean
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 = ELF_R_SYM (rcookie->rel->r_info);
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 = section_from_elf_index (rcookie->abfd, isym->st_shndx);
if (isec != NULL && elf_discarded_section (isec))
return TRUE;
}
}
return FALSE;
}
return FALSE;
}
bfd_boolean
elf_bfd_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->_raw_size == 0
|| bfd_is_abs_section (eh->output_section))))
eh = NULL;
stab = bfd_get_section_by_name (abfd, ".stab");
if (stab != NULL
&& (stab->_raw_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 / sizeof (Elf_External_Sym);
cookie.extsymoff = 0;
}
else
{
cookie.locsymcount = symtab_hdr->sh_info;
cookie.extsymoff = symtab_hdr->sh_info;
}
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,
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,
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;
}
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;
}