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author | Ulrich Drepper <drepper@redhat.com> | 1997-03-29 17:32:35 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1997-03-29 17:32:35 +0000 |
commit | 993b3242cdc37152fbbc7fbd5ce22b2734b04b23 (patch) | |
tree | d3c4fc94e027728055d96a370d034b6fb685cf85 /elf/dlvsym.c | |
parent | e7fd8a39abd3a9c9d2139e686b17efb5dc3bf444 (diff) | |
download | glibc-993b3242cdc37152fbbc7fbd5ce22b2734b04b23.tar.gz glibc-993b3242cdc37152fbbc7fbd5ce22b2734b04b23.tar.xz glibc-993b3242cdc37152fbbc7fbd5ce22b2734b04b23.zip |
Update.
1997-03-29 17:39 Ulrich Drepper <drepper@cygnus.com> * math/Makefile (routines): Add carg, s_ccosh and s_csinh. * math/complex.h: Add C++ protection. * math/libm-test.c (cexp_test): Correct a few bugs. (csinh_test): New function. (ccosh_test): New function. (cacos_test): New function. (cacosh_test): New function. (casinh_test): New function. (catanh_test): New function. (main): Add calls to csinh_test and ccosh_test. * misc/Makefile (tests): Add tst-tsearch. Add rule to link tst-tsearch against libm. * misc/tsearch.c: Rewritten to use Red-Black-Tree algorithm by Bernd Schmidt <crux@Pool.Informatik.RWTH-Aachen.DE>. * misc/tst-tsearch.c: New file. * stdio-common/bug5.c: Clear LD_LIBRARY_PATH environment variable before using system. * stdio-common/test-popen.c: Clear LD_LIBRARY_PATH environment variable before using popen. * sysdeps/libm-ieee754/s_cexp.c: Correct handling of special cases. * sysdeps/libm-ieee754/s_cexpf.c: Likewise. * sysdeps/libm-ieee754/s_cexpl.c: Likewise. * sysdeps/libm-i387/s_cexp.S: New file. ix87 specific implementation of complex exponential function. * sysdeps/libm-i387/s_cexpf.S: New file. * sysdeps/libm-i387/s_cexpl.S: New file. * sysdeps/libm-ieee754/s_ccosh.c: New file. Implementation of complex cosh function. * sysdeps/libm-ieee754/s_ccoshf.c: New file. * sysdeps/libm-ieee754/s_ccoshl.c: New file. * sysdeps/libm-ieee754/s_csinh.c: New file. Implementation of complex sinh function. * sysdeps/libm-ieee754/s_csinhf.c: New file. * sysdeps/libm-ieee754/s_csinhl.c: New file. * math/carg.c: New file. Generic implementatio of carg function. * math/cargf.c: New file. * math/cargl.c: New file. 1997-03-29 16:07 Ulrich Drepper <drepper@cygnus.com> * sysdeps/posix/system.c: Update copyright. 1997-03-29 04:18 Ulrich Drepper <drepper@cygnus.com> * elf/dl-error.c (_dl_catch_error): Add another argument which is passed to OPERATE. (_dl_receive_error): Likewise. * elf/link.h: Change prototypes for _dl_catch_error and _dl_receive_error to reflect above change. * elf/dl-deps.c: Don't use nested function. Call _dl_catch_error with additional argument with pointer to data. * elf/dlclose.c: Likewise. * elf/dlerror.c: Likewise. * elf/dlopen.c: Likewise. * elf/dlsym.c: Likewise. * elf/dlvsym.c: Likewise. * elf/rtld.c: Likewise. * nss/nsswitch.c: Likewise. Patch by Bernd Schmidt <crux@Pool.Informatik.RWTH-Aachen.DE>. 1997-03-28 21:14 Miguel de Icaza <miguel@nuclecu.unam.mx> * elf/dl-error.c: Manually set up the values of "c", this avoids a call to memcpy and a zero 152 bytes structure. * sysdeps/sparc/dl-machine.h (elf_machine_rela): Test RTLD_BOOTSTRAP to avoid performing relative relocs on a second pass. * sysdeps/sparc/udiv_qrnnd.S: Make the code PIC aware. * sysdeps/unix/sysv/linux/sparc/Dist: Add kernel_stat.h and kernel_sigaction.h Add Linux/SPARC specific definitions. * sysdeps/unix/sysv/linux/sparc/fcntlbits.h: New file. * sysdeps/unix/sysv/linux/sparc/ioctls.h: New file. * sysdeps/unix/sysv/linux/sparc/kernel_sigaction.h: New file. * sysdeps/unix/sysv/linux/sparc/kernel_stat.h: New file. * sysdeps/unix/sysv/linux/sparc/sigaction.h: New file. * sysdeps/unix/sysv/linux/sparc/signum.h: New file. * sysdeps/unix/sysv/linux/sparc/termbits.h: New file. 1997-03-28 13:06 Philip Blundell <pjb27@cam.ac.uk> * sysdeps/posix/getaddrinfo.c (gaih_inet_serv): Use __getservbyname_r() not getservbyname(). (BROKEN_LIKE_POSIX): Define to 1 so we get strict POSIX behaviour.
Diffstat (limited to 'elf/dlvsym.c')
-rw-r--r-- | elf/dlvsym.c | 109 |
1 files changed, 67 insertions, 42 deletions
diff --git a/elf/dlvsym.c b/elf/dlvsym.c index b3d4c1aeee..ca8e25d9df 100644 --- a/elf/dlvsym.c +++ b/elf/dlvsym.c @@ -24,57 +24,82 @@ #include <dl-hash.h> -void * -__dlvsym (void *handle, const char *name, const char *version_str) +struct dlvsym_args { - ElfW(Addr) caller = (ElfW(Addr)) __builtin_return_address (0); - ElfW(Addr) loadbase; + /* The arguments to dlvsym_doit. */ + void *handle; + const char *name; struct r_found_version version; - const ElfW(Sym) *ref = NULL; - void doit (void) + 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 == NULL) + /* Search the global scope. */ + args->loadbase = _dl_lookup_versioned_symbol (args->name, &args->ref, + &(_dl_global_scope + ?: _dl_default_scope)[2], + NULL, &args->version, 0); + else if (args->handle == RTLD_NEXT) { - if (handle == NULL) - /* Search the global scope. */ - loadbase = _dl_lookup_versioned_symbol - (name, &ref, &(_dl_global_scope ?: _dl_default_scope)[2], NULL, - &version, 0); - else if (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 (caller >= l->l_addr && (!match || match->l_addr < l->l_addr)) - match = l; - - if (! match) - _dl_signal_error (0, NULL, _("\ + 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; - - loadbase = _dl_lookup_versioned_symbol_skip - (name, &ref, &_dl_loaded, NULL, &version, l); - } - else - { - /* Search the scope of the given object. */ - struct link_map *map = handle; - struct link_map *mapscope[2] = { map, NULL }; - loadbase = _dl_lookup_versioned_symbol - (name, &ref, mapscope, map->l_name, &version, 0); - } + l = match; + while (l->l_loader) + l = l->l_loader; + + args->loadbase = _dl_lookup_versioned_symbol_skip (args->name, + &args->ref, + &_dl_loaded, + NULL, &args->version, + l); + } + else + { + /* Search the scope of the given object. */ + struct link_map *map = args->handle; + struct link_map *mapscope[2] = { map, NULL }; + args->loadbase = _dl_lookup_versioned_symbol (args->name, &args->ref, + mapscope, 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. */ - version.name = version_str; - version.hash = _dl_elf_hash (version_str); + args.version.name = version_str; + args.version.hash = _dl_elf_hash (version_str); /* We don't have a specific file where the symbol can be found. */ - version.filename = NULL; + args.version.filename = NULL; - return _dlerror_run (doit) ? NULL : (void *) (loadbase + ref->st_value); + return (_dlerror_run (dlvsym_doit, &args) + ? NULL : (void *) (args.loadbase + args.ref->st_value)); } weak_alias (__dlvsym, dlvsym) |