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2004-03-06  Ulrich Drepper  <drepper@redhat.com>

	* elf/dl-lookup.c: We don't need for specialized lookup functions.
	Combining the functionality does not slow down relocation processing,
	it might even speed it up a little.
	* sysdeps/generic/ldsodefs.h: Adjust prototypes for lookup function.
	Add only one function pointer to rtlf_global_ro.
	* elf/do-lookup.h: Replace #ifs with ifs.
	* elf/dl-libc.c: Adjust _dl_lookup_* callers.
	* elf/dl-reloc.c: Likewise.
	* elf/dl-runtime.c: Likewise.
	* elf/dl-sym.c: Likewise.
	* elf/rtld.c: Likewise.  Adjust _rtld_global_ro initialization.

	* sysdeps/generic/ldsodefs.h (__rtld_local_attribute__,
	__rtld_global_attribute__): Undef after use.
	(_rtld_local_ro): Define __rtld_local_attribute__ with just hidden
	if available.

	* sysdeps/alpha/Subdirs: New file.
	* sysdeps/alpha/soft-fp/Makefile: New file.
	* sysdeps/alpha/soft-fp/Versions: New file.
	* sysdeps/alpha/soft-fp/local-soft-fp.h: New file.
	* sysdeps/alpha/soft-fp/ots_add.c: New file.
	* sysdeps/alpha/soft-fp/ots_cmp.c: new file.
	* sysdeps/alpha/soft-fp/ots_cmpe.c: New file.
	* sysdeps/alpha/soft-fp/ots_cvtqux.c: New file.
	* sysdeps/alpha/soft-fp/ots_cvtqx.c: New file.
	* sysdeps/alpha/soft-fp/ots_cvttx.c: New file.
	* sysdeps/alpha/soft-fp/ots_cvtxq.c: New file.
	* sysdeps/alpha/soft-fp/ots_cvtxt.c: New file.
	* sysdeps/alpha/soft-fp/ots_div.c: New file.
	* sysdeps/alpha/soft-fp/ots_mul.c: New file.
	* sysdeps/alpha/soft-fp/ots_nintxq.c: New file.
	* sysdeps/alpha/soft-fp/ots_sub.c: New file.
This commit is contained in:
Ulrich Drepper 2004-03-07 05:26:02 +00:00
parent bdf4a4f1ea
commit 021723ab78
8 changed files with 194 additions and 216 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

44
ChangeLog
View file

@ -1,17 +1,43 @@
2004-03-06 Ulrich Drepper <drepper@redhat.com>
* elf/dl-lookup.c: We don't need for specialized lookup functions.
Combining the functionality does not slow down relocation processing,
it might even speed it up a little.
* sysdeps/generic/ldsodefs.h: Adjust prototypes for lookup function.
Add only one function pointer to rtlf_global_ro.
* elf/do-lookup.h: Replace #ifs with ifs.
* elf/dl-libc.c: Adjust _dl_lookup_* callers.
* elf/dl-reloc.c: Likewise.
* elf/dl-runtime.c: Likewise.
* elf/dl-sym.c: Likewise.
* elf/rtld.c: Likewise. Adjust _rtld_global_ro initialization.
2004-03-06 Richard Henderson <rth@redhat.com>
* sysdeps/generic/ldsodefs.h (__rtld_local_attribute__,
__rtld_global_attribute__): Undef after use.
(_rtld_local_ro): Define __rtld_local_attribute__ with just hidden
if available.
* soft-fp/quad.h (union _FP_UNION_Q): Add longs structure.
* sysdeps/alpha/Implies: Add alpha/soft-fp.
* sysdeps/alpha/soft-fp/sfp-machine.h: Rewrite for GEM interface.
* sysdeps/alpha/Subdirs, sysdeps/alpha/soft-fp/Makefile,
sysdeps/alpha/soft-fp/Versions, sysdeps/alpha/soft-fp/local-soft-fp.h,
sysdeps/alpha/soft-fp/ots_add.c, sysdeps/alpha/soft-fp/ots_cmp.c,
sysdeps/alpha/soft-fp/ots_cmpe.c, sysdeps/alpha/soft-fp/ots_cvtqux.c,
sysdeps/alpha/soft-fp/ots_cvtqx.c, sysdeps/alpha/soft-fp/ots_cvttx.c,
sysdeps/alpha/soft-fp/ots_cvtxq.c, sysdeps/alpha/soft-fp/ots_cvtxt.c,
sysdeps/alpha/soft-fp/ots_div.c, sysdeps/alpha/soft-fp/ots_mul.c,
sysdeps/alpha/soft-fp/ots_nintxq.c, sysdeps/alpha/soft-fp/ots_sub.c:
New files.
* sysdeps/alpha/Subdirs: New file.
* sysdeps/alpha/soft-fp/Makefile: New file.
* sysdeps/alpha/soft-fp/Versions: New file.
* sysdeps/alpha/soft-fp/local-soft-fp.h: New file.
* sysdeps/alpha/soft-fp/ots_add.c: New file.
* sysdeps/alpha/soft-fp/ots_cmp.c: new file.
* sysdeps/alpha/soft-fp/ots_cmpe.c: New file.
* sysdeps/alpha/soft-fp/ots_cvtqux.c: New file.
* sysdeps/alpha/soft-fp/ots_cvtqx.c: New file.
* sysdeps/alpha/soft-fp/ots_cvttx.c: New file.
* sysdeps/alpha/soft-fp/ots_cvtxq.c: New file.
* sysdeps/alpha/soft-fp/ots_cvtxt.c: New file.
* sysdeps/alpha/soft-fp/ots_div.c: New file.
* sysdeps/alpha/soft-fp/ots_mul.c: New file.
* sysdeps/alpha/soft-fp/ots_nintxq.c: New file.
* sysdeps/alpha/soft-fp/ots_sub.c: New file.
2004-03-06 Ulrich Drepper <drepper@redhat.com>

11
elf/dl-libc.c
View file

@ -85,9 +85,9 @@ do_dlsym (void *ptr)
{
struct do_dlsym_args *args = (struct do_dlsym_args *) ptr;
args->ref = NULL;
args->loadbase = GLRO(dl_lookup_symbol) (args->name, args->map, &args->ref,
args->map->l_local_scope, 0,
DL_LOOKUP_RETURN_NEWEST);
args->loadbase = GLRO(dl_lookup_symbol_x) (args->name, args->map, &args->ref,
args->map->l_local_scope, NULL, 0,
DL_LOOKUP_RETURN_NEWEST, NULL);
}
static void
@ -126,9 +126,8 @@ do_dlsym_private (void *ptr)
struct do_dlsym_args *args = (struct do_dlsym_args *) ptr;
args->ref = NULL;
l = GLRO(dl_lookup_versioned_symbol) (args->name, args->map,
&args->ref, args->map->l_scope,
&vers, 0, 0);
l = GLRO(dl_lookup_symbol_x) (args->name, args->map, &args->ref,
args->map->l_scope, &vers, 0, 0, NULL);
args->loadbase = l;
}

32
elf/dl-reloc.c
View file

@ -213,13 +213,15 @@ _dl_relocate_object (struct link_map *l, struct r_scope_elem *scope[],
int _tc = elf_machine_type_class (r_type); \
l->l_lookup_cache.type_class = _tc; \
l->l_lookup_cache.sym = (*ref); \
_lr = ((version) != NULL && (version)->hash != 0 \
? _dl_lookup_versioned_symbol (strtab + (*ref)->st_name, \
l, (ref), scope, (version),\
_tc, 0) \
: _dl_lookup_symbol (strtab + (*ref)->st_name, l, (ref), \
scope, _tc, \
DL_LOOKUP_ADD_DEPENDENCY)); \
const struct r_found_version *v = NULL; \
int flags = DL_LOOKUP_ADD_DEPENDENCY; \
if ((version) != NULL && (version)->hash != 0) \
{ \
v = (version); \
flags = 0; \
} \
_lr = _dl_lookup_symbol_x (strtab + (*ref)->st_name, l, (ref), \
scope, v, _tc, flags, NULL); \
l->l_lookup_cache.ret = (*ref); \
l->l_lookup_cache.value = _lr; })) \
: l)
@ -234,13 +236,15 @@ _dl_relocate_object (struct link_map *l, struct r_scope_elem *scope[],
int _tc = elf_machine_type_class (r_type); \
l->l_lookup_cache.type_class = _tc; \
l->l_lookup_cache.sym = (*ref); \
_lr = ((version) != NULL && (version)->hash != 0 \
? _dl_lookup_versioned_symbol (strtab + (*ref)->st_name, \
l, (ref), scope, \
(version), _tc, 0) \
: _dl_lookup_symbol (strtab + (*ref)->st_name, l, (ref), \
scope, _tc, \
DL_LOOKUP_ADD_DEPENDENCY)); \
const struct r_found_version *v = NULL; \
int flags = DL_LOOKUP_ADD_DEPENDENCY; \
if ((version) != NULL && (version)->hash != 0) \
{ \
v = (version); \
flags = 0; \
} \
_lr = _dl_lookup_symbol_x (strtab + (*ref)->st_name, l, (ref), \
scope, v, _tc, flags, NULL); \
l->l_lookup_cache.ret = (*ref); \
l->l_lookup_cache.value = _lr; })) \
: l->l_addr)

79
elf/dl-runtime.c
View file

@ -73,30 +73,26 @@ fixup (
used don't look in the global scope. */
if (__builtin_expect (ELFW(ST_VISIBILITY) (sym->st_other), 0) == 0)
{
switch (l->l_info[VERSYMIDX (DT_VERSYM)] != NULL)
{
default:
{
const ElfW(Half) *vernum =
(const void *) D_PTR (l, l_info[VERSYMIDX (DT_VERSYM)]);
ElfW(Half) ndx = vernum[ELFW(R_SYM) (reloc->r_info)] & 0x7fff;
const struct r_found_version *version = &l->l_versions[ndx];
const struct r_found_version *version = NULL;
// XXX Why exactly do we have the differentiation of the flags here?
int flags = DL_LOOKUP_ADD_DEPENDENCY;
if (version->hash != 0)
{
result = _dl_lookup_versioned_symbol (strtab + sym->st_name,
l, &sym, l->l_scope,
version,
ELF_RTYPE_CLASS_PLT, 0);
break;
}
}
case 0:
result = _dl_lookup_symbol (strtab + sym->st_name, l, &sym,
l->l_scope, ELF_RTYPE_CLASS_PLT,
DL_LOOKUP_ADD_DEPENDENCY);
if (l->l_info[VERSYMIDX (DT_VERSYM)] != NULL)
{
const ElfW(Half) *vernum =
(const void *) D_PTR (l, l_info[VERSYMIDX (DT_VERSYM)]);
ElfW(Half) ndx = vernum[ELFW(R_SYM) (reloc->r_info)] & 0x7fff;
version = &l->l_versions[ndx];
if (version->hash == 0)
version = NULL;
else
flags = 0;
}
result = _dl_lookup_symbol_x (strtab + sym->st_name, l, &sym,
l->l_scope, version, ELF_RTYPE_CLASS_PLT,
DL_LOOKUP_ADD_DEPENDENCY, NULL);
/* Currently result contains the base load address (or link map)
of the object that defines sym. Now add in the symbol
offset. */
@ -161,32 +157,27 @@ profile_fixup (
don't look in the global scope. */
if (__builtin_expect (ELFW(ST_VISIBILITY) (sym->st_other), 0) == 0)
{
switch (l->l_info[VERSYMIDX (DT_VERSYM)] != NULL)
{
default:
{
const ElfW(Half) *vernum =
(const void *) D_PTR (l,l_info[VERSYMIDX (DT_VERSYM)]);
ElfW(Half) ndx = vernum[ELFW(R_SYM) (reloc->r_info)] & 0x7fff;
const struct r_found_version *version = &l->l_versions[ndx];
const struct r_found_version *version = NULL;
// XXX Why exactly do we have the differentiation of the flags here?
int flags = DL_LOOKUP_ADD_DEPENDENCY;
if (version->hash != 0)
{
result = _dl_lookup_versioned_symbol (strtab
+ sym->st_name,
l, &sym, l->l_scope,
version,
ELF_RTYPE_CLASS_PLT,
0);
break;
}
}
case 0:
result = _dl_lookup_symbol (strtab + sym->st_name, l, &sym,
l->l_scope, ELF_RTYPE_CLASS_PLT,
DL_LOOKUP_ADD_DEPENDENCY);
if (l->l_info[VERSYMIDX (DT_VERSYM)] != NULL)
{
const ElfW(Half) *vernum =
(const void *) D_PTR (l, l_info[VERSYMIDX (DT_VERSYM)]);
ElfW(Half) ndx = vernum[ELFW(R_SYM) (reloc->r_info)] & 0x7fff;
version = &l->l_versions[ndx];
if (version->hash == 0)
version = NULL;
else
flags = 0;
}
result = _dl_lookup_symbol_x (strtab + sym->st_name, l, &sym,
l->l_scope, version,
ELF_RTYPE_CLASS_PLT,
DL_LOOKUP_ADD_DEPENDENCY, NULL);
/* Currently result contains the base load address (or link map)
of the object that defines sym. Now add in the symbol
offset. */

32
elf/dl-sym.c
View file

@ -82,9 +82,9 @@ _dl_sym (void *handle, const char *name, void *who)
if (handle == RTLD_DEFAULT)
/* Search the global scope as seen in the caller object. */
result = GLRO(dl_lookup_symbol) (name, match, &ref, match->l_scope, 0,
DL_LOOKUP_RETURN_NEWEST
| DL_LOOKUP_ADD_DEPENDENCY);
result = GLRO(dl_lookup_symbol_x) (name, match, &ref, match->l_scope, NULL,
0, (DL_LOOKUP_RETURN_NEWEST
| DL_LOOKUP_ADD_DEPENDENCY), NULL);
else
{
if (handle != RTLD_NEXT)
@ -92,9 +92,9 @@ _dl_sym (void *handle, const char *name, void *who)
/* Search the scope of the given object. */
struct link_map *map = handle;
result = GLRO(dl_lookup_symbol) (name, match, &ref,
map->l_local_scope, 0,
DL_LOOKUP_RETURN_NEWEST);
result = GLRO(dl_lookup_symbol_x) (name, match, &ref,
map->l_local_scope, NULL, 0,
DL_LOOKUP_RETURN_NEWEST, NULL);
}
else
{
@ -111,8 +111,8 @@ RTLD_NEXT used in code not dynamically loaded"));
while (l->l_loader != NULL)
l = l->l_loader;
result = GLRO(dl_lookup_symbol_skip) (name, l, &ref,
l->l_local_scope, match);
result = GLRO(dl_lookup_symbol_x) (name, l, &ref, l->l_local_scope,
NULL, 0, 0, match);
}
}
@ -165,9 +165,9 @@ _dl_vsym (void *handle, const char *name, const char *version, void *who)
if (handle == RTLD_DEFAULT)
/* Search the global scope. */
result = GLRO(dl_lookup_versioned_symbol) (name, match, &ref,
match->l_scope, &vers, 0,
DL_LOOKUP_ADD_DEPENDENCY);
result = GLRO(dl_lookup_symbol_x) (name, match, &ref, match->l_scope,
&vers, 0, DL_LOOKUP_ADD_DEPENDENCY,
NULL);
else if (handle == RTLD_NEXT)
{
if (__builtin_expect (match == GL(dl_loaded), 0))
@ -183,17 +183,15 @@ RTLD_NEXT used in code not dynamically loaded"));
while (l->l_loader != NULL)
l = l->l_loader;
result = GLRO(dl_lookup_versioned_symbol_skip) (name, l, &ref,
l->l_local_scope,
&vers, match);
result = GLRO(dl_lookup_symbol_x) (name, l, &ref, l->l_local_scope,
&vers, 0, 0, match);
}
else
{
/* Search the scope of the given object. */
struct link_map *map = handle;
result = GLRO(dl_lookup_versioned_symbol) (name, map, &ref,
map->l_local_scope, &vers,
0, 0);
result = GLRO(dl_lookup_symbol_x) (name, map, &ref, map->l_local_scope,
&vers, 0, 0, NULL);
}
if (ref != NULL)

125
elf/do-lookup.h
View file

@ -17,21 +17,16 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#if VERSIONED
# define FCT do_lookup_versioned
# define ARG const struct r_found_version *const version
#else
# define FCT do_lookup
# define ARG int flags
#endif
/* Inner part of the lookup functions. We return a value > 0 if we
found the symbol, the value 0 if nothing is found and < 0 if
something bad happened. */
static int
FCT (const char *undef_name, unsigned long int hash, const ElfW(Sym) *ref,
struct sym_val *result, struct r_scope_elem *scope, size_t i, ARG,
struct link_map *skip, int type_class)
__attribute_noinline__
do_lookup_x (const char *undef_name, unsigned long int hash,
const ElfW(Sym) *ref, struct sym_val *result,
struct r_scope_elem *scope, size_t i,
const struct r_found_version *const version, int flags,
struct link_map *skip, int type_class)
{
struct link_map **list = scope->r_list;
size_t n = scope->r_nlist;
@ -44,10 +39,8 @@ FCT (const char *undef_name, unsigned long int hash, const ElfW(Sym) *ref,
const ElfW(Half) *verstab;
Elf_Symndx symidx;
const ElfW(Sym) *sym;
#if ! VERSIONED
int num_versions = 0;
const ElfW(Sym) *versioned_sym = NULL;
#endif
map = list[i];
@ -100,67 +93,71 @@ FCT (const char *undef_name, unsigned long int hash, const ElfW(Sym) *ref,
/* Not the symbol we are looking for. */
continue;
#if VERSIONED
if (__builtin_expect (verstab == NULL, 0))
if (version != NULL)
{
/* We need a versioned symbol but haven't found any. If
this is the object which is referenced in the verneed
entry it is a bug in the library since a symbol must
not simply disappear.
if (__builtin_expect (verstab == NULL, 0))
{
/* We need a versioned symbol but haven't found any. If
this is the object which is referenced in the verneed
entry it is a bug in the library since a symbol must
not simply disappear.
It would also be a bug in the object since it means that
the list of required versions is incomplete and so the
tests in dl-version.c haven't found a problem.*/
assert (version->filename == NULL
|| ! _dl_name_match_p (version->filename, map));
It would also be a bug in the object since it means that
the list of required versions is incomplete and so the
tests in dl-version.c haven't found a problem.*/
assert (version->filename == NULL
|| ! _dl_name_match_p (version->filename, map));
/* Otherwise we accept the symbol. */
/* Otherwise we accept the symbol. */
}
else
{
/* We can match the version information or use the
default one if it is not hidden. */
ElfW(Half) ndx = verstab[symidx] & 0x7fff;
if ((map->l_versions[ndx].hash != version->hash
|| strcmp (map->l_versions[ndx].name, version->name))
&& (version->hidden || map->l_versions[ndx].hash
|| (verstab[symidx] & 0x8000)))
/* It's not the version we want. */
continue;
}
}
else
{
/* We can match the version information or use the
default one if it is not hidden. */
ElfW(Half) ndx = verstab[symidx] & 0x7fff;
if ((map->l_versions[ndx].hash != version->hash
|| strcmp (map->l_versions[ndx].name, version->name))
&& (version->hidden || map->l_versions[ndx].hash
|| (verstab[symidx] & 0x8000)))
/* It's not the version we want. */
continue;
}
#else
/* No specific version is selected. There are two ways we
can got here:
/* No specific version is selected. There are two ways we
can got here:
- a binary which does not include versioning information
is loaded
- a binary which does not include versioning information
is loaded
- dlsym() instead of dlvsym() is used to get a symbol which
might exist in more than one form
- dlsym() instead of dlvsym() is used to get a symbol which
might exist in more than one form
If the library does not provide symbol version
information there is no problem at at: we simply use the
symbol if it is defined.
If the library does not provide symbol version
information there is no problem at at: we simply use the
symbol if it is defined.
These two lookups need to be handled differently if the
library defines versions. In the case of the old
unversioned application the oldest (default) version
should be used. In case of a dlsym() call the latest and
public interface should be returned. */
if (verstab != NULL)
{
if ((verstab[symidx] & 0x7fff)
>= ((flags & DL_LOOKUP_RETURN_NEWEST) ? 2 : 3))
These two lookups need to be handled differently if the
library defines versions. In the case of the old
unversioned application the oldest (default) version
should be used. In case of a dlsym() call the latest and
public interface should be returned. */
if (verstab != NULL)
{
/* Don't accept hidden symbols. */
if ((verstab[symidx] & 0x8000) == 0 && num_versions++ == 0)
/* No version so far. */
versioned_sym = sym;
if ((verstab[symidx] & 0x7fff)
>= ((flags & DL_LOOKUP_RETURN_NEWEST) ? 2 : 3))
{
/* Don't accept hidden symbols. */
if ((verstab[symidx] & 0x8000) == 0
&& num_versions++ == 0)
/* No version so far. */
versioned_sym = sym;
continue;
continue;
}
}
}
#endif
/* There cannot be another entry for this symbol so stop here. */
goto found_it;
@ -170,11 +167,7 @@ FCT (const char *undef_name, unsigned long int hash, const ElfW(Sym) *ref,
looking for an unversioned symbol and the version is not the
default version we still accept this symbol since there are
no possible ambiguities. */
#if VERSIONED
sym = NULL;
#else
sym = num_versions == 1 ? versioned_sym : NULL;
#endif
if (sym != NULL)
{
@ -204,13 +197,11 @@ FCT (const char *undef_name, unsigned long int hash, const ElfW(Sym) *ref,
}
}
#if VERSIONED
/* If this current map is the one mentioned in the verneed entry
and we have not found a weak entry, it is a bug. */
if (symidx == STN_UNDEF && version->filename != NULL
if (symidx == STN_UNDEF && version != NULL && version->filename != NULL
&& __builtin_expect (_dl_name_match_p (version->filename, map), 0))
return -1;
#endif
}
while (++i < n);

12
elf/rtld.c
View file

@ -139,10 +139,7 @@ struct rtld_global_ro _rtld_global_ro attribute_relro =
._dl_signal_error = _dl_signal_error,
._dl_start_profile = _dl_start_profile,
._dl_mcount = _dl_mcount_internal,
._dl_lookup_symbol = _dl_lookup_symbol,
._dl_lookup_versioned_symbol = _dl_lookup_versioned_symbol,
._dl_lookup_symbol_skip = _dl_lookup_symbol_skip,
._dl_lookup_versioned_symbol_skip = _dl_lookup_versioned_symbol_skip,
._dl_lookup_symbol_x = _dl_lookup_symbol_x,
};
/* If we would use strong_alias here the compiler would see a
non-hidden definition. This would undo the effect of the previous
@ -1521,9 +1518,10 @@ cannot allocate TLS data structures for initial thread");
ElfW(Addr) loadbase;
lookup_t result;
result = _dl_lookup_symbol (INTUSE(_dl_argv)[i], GL(dl_loaded),
&ref, GL(dl_loaded)->l_scope,
ELF_RTYPE_CLASS_PLT, 1);
result = _dl_lookup_symbol_x (INTUSE(_dl_argv)[i], GL(dl_loaded),
&ref, GL(dl_loaded)->l_scope, NULL,
ELF_RTYPE_CLASS_PLT,
DL_LOOKUP_ADD_DEPENDENCY, NULL);
loadbase = LOOKUP_VALUE_ADDRESS (result);

75
sysdeps/generic/ldsodefs.h
View file

@ -347,8 +347,10 @@ struct rtld_global
# define __rtld_local_attribute__
# endif
extern struct rtld_global _rtld_local __rtld_local_attribute__;
# undef __rtld_local_attribute__
# endif
extern struct rtld_global _rtld_global __rtld_global_attribute__;
# undef __rtld_global_attribute__
#endif
#ifndef SHARED
@ -478,42 +480,34 @@ struct rtld_global_ro
const char *);
void (internal_function *_dl_start_profile) (void);
void (*_dl_mcount) (ElfW(Addr) frompc, ElfW(Addr) selfpc);
lookup_t (internal_function *_dl_lookup_symbol) (const char *,
struct link_map *,
const ElfW(Sym) **,
struct r_scope_elem *[],
int, int);
lookup_t (internal_function *_dl_lookup_versioned_symbol) (const char *,
struct link_map *,
const ElfW(Sym) **,
struct r_scope_elem *[],
const struct r_found_version *,
int, int);
lookup_t (internal_function *_dl_lookup_symbol_skip) (const char *,
struct link_map *,
const ElfW(Sym) **,
struct r_scope_elem *[],
struct link_map *);
lookup_t (internal_function *_dl_lookup_versioned_symbol_skip) (const char *,
struct link_map *,
const ElfW(Sym) **,
struct r_scope_elem *[],
const struct r_found_version *,
struct link_map *);
lookup_t (internal_function *_dl_lookup_symbol_x) (const char *,
struct link_map *,
const ElfW(Sym) **,
struct r_scope_elem *[],
const struct r_found_version *,
int, int,
struct link_map *);
};
# define __rtld_global_attribute__
# ifdef IS_IN_rtld
# ifdef HAVE_VISIBILITY_ATTRIBUTE
# define __rtld_local_attribute__ __attribute__ ((visibility ("hidden")))
# else
# define __rtld_local_attribute__
# endif
extern struct rtld_global_ro _rtld_local_ro
attribute_relro __rtld_local_attribute__;
extern struct rtld_global_ro _rtld_global_ro
attribute_relro __rtld_global_attribute__;
# undef __rtld_local_attribute__
# else
/* We cheat a bit here. We declare the variable as as const even
though it is at startup. */
extern const struct rtld_global_ro _rtld_global_ro
attribute_relro __rtld_global_attribute__;
# endif
# undef __rtld_global_attribute__
#endif
#undef EXTERN
@ -681,13 +675,6 @@ extern void _dl_rtld_di_serinfo (struct link_map *loader,
object) is searched in turn. REFERENCE_NAME should name the object
containing the reference; it is used in error messages.
TYPE_CLASS describes the type of symbol we are looking for. */
extern lookup_t _dl_lookup_symbol (const char *undef,
struct link_map *undef_map,
const ElfW(Sym) **sym,
struct r_scope_elem *symbol_scope[],
int type_class, int flags)
internal_function attribute_hidden;
enum
{
/* If necessary add dependency between user and provider object. */
@ -698,31 +685,15 @@ enum
};
/* Lookup versioned symbol. */
extern lookup_t _dl_lookup_versioned_symbol (const char *undef,
struct link_map *undef_map,
const ElfW(Sym) **sym,
struct r_scope_elem *symbol_scope[],
const struct r_found_version *version,
int type_class, int explicit)
extern lookup_t _dl_lookup_symbol_x (const char *undef,
struct link_map *undef_map,
const ElfW(Sym) **sym,
struct r_scope_elem *symbol_scope[],
const struct r_found_version *version,
int type_class, int explicit,
struct link_map *skip_map)
internal_function attribute_hidden;
/* For handling RTLD_NEXT we must be able to skip shared objects. */
extern lookup_t _dl_lookup_symbol_skip (const char *undef,
struct link_map *undef_map,
const ElfW(Sym) **sym,
struct r_scope_elem *symbol_scope[],
struct link_map *skip_this)
internal_function;
/* For handling RTLD_NEXT with versioned symbols we must be able to
skip shared objects. */
extern lookup_t _dl_lookup_versioned_symbol_skip (const char *undef,
struct link_map *undef_map,
const ElfW(Sym) **sym,
struct r_scope_elem *symbol_scope[],
const struct r_found_version *version,
struct link_map *skip_this)
internal_function;
/* Look up symbol NAME in MAP's scope and return its run-time address. */
extern ElfW(Addr) _dl_symbol_value (struct link_map *map, const char *name)