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author | Ulrich Drepper <drepper@redhat.com> | 1999-07-07 18:39:33 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1999-07-07 18:39:33 +0000 |
commit | 94e365c61202e2472c8aea42c7c95ce40f5b843c (patch) | |
tree | 15cf6a02604ab91d5aa1feeaeb338f0fc6b91f34 /elf/dlvsym.c | |
parent | 2556bfe6fdb5ccb4864e0249d5fdd475e4100c71 (diff) | |
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Update.
* sysdeps/gnu/Makefile (libdl-routines): Add eval.
1999-07-06 Zack Weinberg <zack@rabi.columbia.edu>
* dlfcn: New directory. Move the following files from elf:
dladdr.c, dlclose.c, dlerror.c, dlfcn.h, dlopen.c,
dlopenold.c, dlsym.c, dlvsym.c.
* dlfcn/Makefile: New file.
* dlfcn/Versions: New file.
* dlfcn/dlsym.c: All ELF-specific code split out to new
function _dl_sym.
* dlfcn/dlvsym.c: All ELF-specific code split out to new
function _dl_vsym.
* elf/dl-sym.c: New file. _dl_sym and _dl_vsym are
implemented here.
* dlfcn/dladdr.c: Remove all references to ELF data structures
or headers.
* dlfcn/dlclose.c: Likewise.
* dlfcn/dlerror.c: Likewise.
* dlfcn/dlopen.c: Likewise.
* dlfcn/dlopenold.c: Likewise.
* Makeconfig (dlfcn): New variable - set to `dlfcn' if elf is
yes, empty otherwise.
(libdl): Set to dlfcn/libdl.so or libdl.a if elf is yes,
depending on build-shared.
(subdirs): Add $(dlfcn).
(rpath-dirs): Add dlfcn.
* elf/Makefile: Remove all references to libdl or its
components, except the ones relating to the test cases.
(routines): Add dl-sym.
* elf/Versions (libc): Add _dl_sym and _dl_vsym for GLIBC_2.2.
(libdl): Delete.
* elf/dl-close.c (_dl_close): Change argument to void *.
* elf/dl-open.c (_dl_open): Change return type to void *.
* elf/eval.c: Removed.
* elf/ldsodefs.h: Move prototypes of _dl_catch_error,
_dlerror_run, _dl_open, _dl_close, _dl_addr, and
_dl_mcount_wrapper_check to include/dlfcn.h. Delete
_CALL_DL_FCT macro.
* include/dlfcn.h: Also prototype _dl_sym and _dl_vsym here.
Include real header from dlfcn directory.
* include/ldsodefs.h: Removed.
* grp/initgroups.c: Use DL_CALL_FCT not _CALL_DL_FCT.
* nss/getXXbyYY_r.c: Likewise.
* nss/getXXent_r.c: Likewise.
* iconv/gconv.c: Likewise. Don't include ldsodefs.h.
* iconv/gconv_db.c: Likewise. Don't include ldsodefs.h.
* iconv/skeleton.c: Don't include ldsodefs.h.
* nss/nsswitch.h: Don't include ldsodefs.h. Include dlfcn.h.
1999-07-07 Ulrich Drepper <drepper@cygnus.com>
Diffstat (limited to 'elf/dlvsym.c')
-rw-r--r-- | elf/dlvsym.c | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/elf/dlvsym.c b/elf/dlvsym.c deleted file mode 100644 index 68e099b4f9..0000000000 --- a/elf/dlvsym.c +++ /dev/null @@ -1,116 +0,0 @@ -/* Look up a versioned symbol in a shared object loaded by `dlopen'. - Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Library General Public License as - published by the Free Software Foundation; either version 2 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include <dlfcn.h> -#include <setjmp.h> -#include <stddef.h> -#include <libintl.h> -#include <elf/ldsodefs.h> - -#include <dl-hash.h> - -struct dlvsym_args -{ - /* The arguments to dlvsym_doit. */ - void *handle; - const char *name; - struct r_found_version version; - ElfW(Addr) caller; - /* The return values of dlvsym_doit. */ - ElfW(Addr) loadbase; - const ElfW(Sym) *ref; -}; - - -static void -dlvsym_doit (void *a) -{ - struct dlvsym_args *args = (struct dlvsym_args *)a; - args->ref = NULL; - - if (args->handle == RTLD_DEFAULT) - /* Search the global scope. */ - args->loadbase = _dl_lookup_versioned_symbol (args->name, &args->ref, - _dl_global_scope, - NULL, &args->version, 0); - else if (args->handle == RTLD_NEXT) - { - struct link_map *l, *match; - - /* Find the highest-addressed object that CALLER is not below. */ - match = NULL; - for (l = _dl_loaded; l; l = l->l_next) - if (args->caller >= l->l_addr && (!match || match->l_addr < l->l_addr)) - match = l; - - if (! match) - _dl_signal_error (0, NULL, _("\ -RTLD_NEXT used in code not dynamically loaded")); - - l = match; - while (l->l_loader) - l = l->l_loader; - - args->loadbase = _dl_lookup_versioned_symbol_skip (args->name, - &args->ref, - l->l_local_scope, - NULL, &args->version, - match); - - if (args->loadbase == 0) - { - /* This means that no such symbol is defined. In this case we - have to provide a phony Elfxx_Sym entry since the value is - referenced in `dlsym'. */ - static const ElfW(Sym) null_result; - - args->ref = &null_result; - } - } - else - { - /* Search the scope of the given object. */ - struct link_map *map = args->handle; - args->loadbase = _dl_lookup_versioned_symbol (args->name, &args->ref, - map->l_local_scope, - map->l_name, - &args->version, 0); - } -} - -void * -__dlvsym (void *handle, const char *name, const char *version_str) -{ - struct dlvsym_args args; - - args.handle = handle; - args.name = name; - args.caller = (ElfW(Addr)) __builtin_return_address (0); - - /* Compute hash value to the version string. */ - args.version.name = version_str; - args.version.hidden = 1; - args.version.hash = _dl_elf_hash (version_str); - /* We don't have a specific file where the symbol can be found. */ - args.version.filename = NULL; - - return (_dlerror_run (dlvsym_doit, &args) - ? NULL : (void *) (args.loadbase + args.ref->st_value)); -} -weak_alias (__dlvsym, dlvsym) |