diff options
Diffstat (limited to 'include/dlfcn.h')
| -rw-r--r-- | include/dlfcn.h | 73 |
1 files changed, 31 insertions, 42 deletions
diff --git a/include/dlfcn.h b/include/dlfcn.h index 998350baa..3fe4d0266 100644 --- a/include/dlfcn.h +++ b/include/dlfcn.h @@ -3,19 +3,19 @@ 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. + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 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. + Lesser 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. */ + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ #ifndef _DLFCN_H #define _DLFCN_H 1 @@ -25,72 +25,61 @@ /* Collect various system dependent definitions and declarations. */ #include <bits/dlfcn.h> +#ifdef __USE_GNU /* If the first argument of `dlsym' or `dlvsym' is set to RTLD_NEXT the run-time address of the symbol called NAME in the next shared object is returned. The "next" relation is defined by the order the shared objects were loaded. */ -#define RTLD_NEXT ((void *) -1l) +# define RTLD_NEXT ((void *) -1l) /* If the first argument to `dlsym' or `dlvsym' is set to RTLD_DEFAULT the run-time address of the symbol called NAME in the global scope is returned. */ -#define RTLD_DEFAULT ((void *) 0) +# define RTLD_DEFAULT ((void *) 0) +#endif __BEGIN_DECLS /* Open the shared object FILE and map it in; return a handle that can be passed to `dlsym' to get symbol values from it. */ -extern void *dlopen __P ((__const char *__file, int __mode)); +extern void *dlopen (__const char *__file, int __mode) __THROW; /* Unmap and close a shared object opened by `dlopen'. The handle cannot be used again after calling `dlclose'. */ -extern int dlclose __P ((void *__handle)); +extern int dlclose (void *__handle) __THROW; /* Find the run-time address in the shared object HANDLE refers to of the symbol called NAME. */ -extern void *dlsym __P ((void *__restrict __handle, - __const char *__restrict __name)); +extern void *dlsym (void *__restrict __handle, + __const char *__restrict __name) __THROW; #ifdef __USE_GNU /* Find the run-time address in the shared object HANDLE refers to of the symbol called NAME with VERSION. */ -extern void *dlvsym __P ((void *__restrict __handle, - __const char *__restrict __name, - __const char *__restrict __version)); +extern void *dlvsym (void *__restrict __handle, + __const char *__restrict __name, + __const char *__restrict __version) __THROW; #endif /* When any of the above functions fails, call this function to return a string describing the error. Each call resets the error string so that a following call returns null. */ -extern char *dlerror __P ((void)); +extern char *dlerror (void) __THROW; #ifdef __USE_GNU +/* Structure containing information about object searched using + `dladdr'. */ +typedef struct +{ + __const char *dli_fname; /* File name of defining object. */ + void *dli_fbase; /* Load address of that object. */ + __const char *dli_sname; /* Name of nearest symbol. */ + void *dli_saddr; /* Exact value of nearest symbol. */ +} Dl_info; + /* Fill in *INFO with the following information about ADDRESS. Returns 0 iff no shared object's segments contain that address. */ -typedef struct - { - __const char *dli_fname; /* File name of defining object. */ - void *dli_fbase; /* Load address of that object. */ - __const char *dli_sname; /* Name of nearest symbol. */ - void *dli_saddr; /* Exact value of nearest symbol. */ - } Dl_info; -extern int dladdr __P ((const void *__address, Dl_info *__info)); - -/* To support profiling of shared objects it is a good idea to call - the function found using `dlsym' using the following macro since - these calls do not use the PLT. But this would mean the dynamic - loader has no chance to find out when the function is called. The - macro applies the necessary magic so that profiling is possible. - Rewrite - foo = (*fctp) (arg1, arg2); - into - foo = DL_CALL_FCT (fctp, (arg1, arg2)); -*/ -# define DL_CALL_FCT(fctp, args) \ - (_dl_mcount_wrapper_check (fctp), (*(fctp)) args) - -/* This function calls the profiling functions. */ -extern void _dl_mcount_wrapper_check __P ((void *__selfpc)); +extern int dladdr (const void *__address, Dl_info *__info) __THROW; #endif __END_DECLS |