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Diffstat (limited to 'uclibc-crosstools-gcc-4.4.2-1/usr/include/dlfcn.h')
| -rw-r--r-- | uclibc-crosstools-gcc-4.4.2-1/usr/include/dlfcn.h | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/uclibc-crosstools-gcc-4.4.2-1/usr/include/dlfcn.h b/uclibc-crosstools-gcc-4.4.2-1/usr/include/dlfcn.h new file mode 100644 index 0000000..2348e43 --- /dev/null +++ b/uclibc-crosstools-gcc-4.4.2-1/usr/include/dlfcn.h @@ -0,0 +1,201 @@ +/* User functions for run-time dynamic loading. + Copyright (C) 1995-1999,2000,2001,2003,2004,2006 + 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 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 + Lesser General Public License for more details. + + 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 + +#include <features.h> +#define __need_size_t +#include <stddef.h> + +/* 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) + +/* 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) + + +# if 0 /* uClibc doesnt support this */ +/* Type for namespace indeces. */ +typedef long int Lmid_t; + +/* Special namespace ID values. */ +# define LM_ID_BASE 0 /* Initial namespace. */ +# define LM_ID_NEWLM -1 /* For dlmopen: request new namespace. */ +# endif +#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 (__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 (void *__handle) __THROW __nonnull ((1)); + +/* Find the run-time address in the shared object HANDLE refers to + of the symbol called NAME. */ +extern void *dlsym (void *__restrict __handle, + __const char *__restrict __name) __THROW __nonnull ((2)); + +#if 0 /*def __USE_GNU*/ +/* Like `dlopen', but request object to be allocated in a new namespace. */ +extern void *dlmopen (Lmid_t __nsid, __const char *__file, int __mode) __THROW; + +/* Find the run-time address in the shared object HANDLE refers to + of the symbol called NAME with VERSION. */ +extern void *dlvsym (void *__restrict __handle, + __const char *__restrict __name, + __const char *__restrict __version) + __THROW __nonnull ((2, 3)); +#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 (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. */ +extern int dladdr (__const void *__address, Dl_info *__info) + __THROW __nonnull ((2)); + +#if 0 /* not supported by uClibc */ +/* Same as `dladdr', but additionally sets *EXTRA_INFO according to FLAGS. */ +extern int dladdr1 (__const void *__address, Dl_info *__info, + void **__extra_info, int __flags) __THROW __nonnull ((2)); + +/* These are the possible values for the FLAGS argument to `dladdr1'. + This indicates what extra information is stored at *EXTRA_INFO. + It may also be zero, in which case the EXTRA_INFO argument is not used. */ +enum + { + /* Matching symbol table entry (const ElfNN_Sym *). */ + RTLD_DL_SYMENT = 1, + + /* The object containing the address (struct link_map *). */ + RTLD_DL_LINKMAP = 2 + }; + + +/* Get information about the shared object HANDLE refers to. + REQUEST is from among the values below, and determines the use of ARG. + + On success, returns zero. On failure, returns -1 and records an error + message to be fetched with `dlerror'. */ +extern int dlinfo (void *__restrict __handle, + int __request, void *__restrict __arg) + __THROW __nonnull ((1, 3)); + +/* These are the possible values for the REQUEST argument to `dlinfo'. */ +enum + { + /* Treat ARG as `lmid_t *'; store namespace ID for HANDLE there. */ + RTLD_DI_LMID = 1, + + /* Treat ARG as `struct link_map **'; + store the `struct link_map *' for HANDLE there. */ + RTLD_DI_LINKMAP = 2, + + RTLD_DI_CONFIGADDR = 3, /* Unsupported, defined by Solaris. */ + + /* Treat ARG as `Dl_serinfo *' (see below), and fill in to describe the + directories that will be searched for dependencies of this object. + RTLD_DI_SERINFOSIZE fills in just the `dls_cnt' and `dls_size' + entries to indicate the size of the buffer that must be passed to + RTLD_DI_SERINFO to fill in the full information. */ + RTLD_DI_SERINFO = 4, + RTLD_DI_SERINFOSIZE = 5, + + /* Treat ARG as `char *', and store there the directory name used to + expand $ORIGIN in this shared object's dependency file names. */ + RTLD_DI_ORIGIN = 6, + + RTLD_DI_PROFILENAME = 7, /* Unsupported, defined by Solaris. */ + RTLD_DI_PROFILEOUT = 8, /* Unsupported, defined by Solaris. */ + + /* Treat ARG as `size_t *', and store there the TLS module ID + of this object's PT_TLS segment, as used in TLS relocations; + store zero if this object does not define a PT_TLS segment. */ + RTLD_DI_TLS_MODID = 9, + + /* Treat ARG as `void **', and store there a pointer to the calling + thread's TLS block corresponding to this object's PT_TLS segment. + Store a null pointer if this object does not define a PT_TLS + segment, or if the calling thread has not allocated a block for it. */ + RTLD_DI_TLS_DATA = 10, + + RTLD_DI_MAX = 10, + }; + + +/* This is the type of elements in `Dl_serinfo', below. + The `dls_name' member points to space in the buffer passed to `dlinfo'. */ +typedef struct +{ + char *dls_name; /* Name of library search path directory. */ + unsigned int dls_flags; /* Indicates where this directory came from. */ +} Dl_serpath; + +/* This is the structure that must be passed (by reference) to `dlinfo' for + the RTLD_DI_SERINFO and RTLD_DI_SERINFOSIZE requests. */ +typedef struct +{ + size_t dls_size; /* Size in bytes of the whole buffer. */ + unsigned int dls_cnt; /* Number of elements in `dls_serpath'. */ + Dl_serpath dls_serpath[1]; /* Actually longer, dls_cnt elements. */ +} Dl_serinfo; + +#else + +/* Get information about the shared objects currently loaded */ +extern int dlinfo (void); + +#endif +#endif /* __USE_GNU */ + + +__END_DECLS + +#endif /* dlfcn.h */ |