diff options
Diffstat (limited to 'sysdeps/generic/ldsodefs.h')
| -rw-r--r-- | sysdeps/generic/ldsodefs.h | 128 |
1 files changed, 76 insertions, 52 deletions
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h index 98294cb05d..e6e144f9eb 100644 --- a/sysdeps/generic/ldsodefs.h +++ b/sysdeps/generic/ldsodefs.h @@ -447,14 +447,74 @@ struct rtld_global_ro #endif #ifdef SHARED + /* We add a function table to _rtld_global which is then used to + call the function instead of going through the PLT. The result + is that we can avoid exporting the functions and we do not jump + PLT relocations in libc.so. */ + const char *(*_dl_get_origin) (void); + size_t (*_dl_dst_count) (const char *, int); + char *(*_dl_dst_substitute) (struct link_map *, const char *, char *, int); + struct link_map *(internal_function *_dl_map_object) (struct link_map *, + const char *, int, + int, int, int); + void (internal_function *_dl_map_object_deps) (struct link_map *, + struct link_map **, + unsigned int, int, int); + void (*_dl_relocate_object) (struct link_map *, struct r_scope_elem *[], + int, int); + int (internal_function *_dl_check_map_versions) (struct link_map *, int, + int); + void (internal_function *_dl_init) (struct link_map *, int, char **, + char **); + void (*_dl_debug_state) (void); +#ifndef MAP_COPY + void (*_dl_unload_cache) (void); +#endif + void (*_dl_debug_printf) (const char *, ...) + __attribute__ ((__format__ (__printf__, 1, 2))); + int (internal_function *_dl_catch_error) (const char **, const char **, + void (*) (void *), void *); + void (internal_function *_dl_signal_error) (int, const char *, const char *, + const char *); + void (internal_function *_dl_start_profile) (struct link_map *, + const char *); + 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 *); + }; # define __rtld_global_attribute__ # ifdef IS_IN_rtld extern struct rtld_global_ro _rtld_local_ro attribute_relro __rtld_local_attribute__; -# endif extern struct rtld_global_ro _rtld_global_ro attribute_relro __rtld_global_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 #endif #undef EXTERN @@ -518,10 +578,7 @@ extern int _dl_sysdep_open_zero_fill (void); /* dl-sysdep.c */ interpreted as for a `printf' call. All the lines start with a tag showing the PID. */ extern void _dl_debug_printf (const char *fmt, ...) - __attribute__ ((__format__ (__printf__, 1, 2))); -extern void _dl_debug_printf_internal (const char *fmt, ...) - __attribute__ ((__format__ (__printf__, 1, 2))) - attribute_hidden; + __attribute__ ((__format__ (__printf__, 1, 2))) attribute_hidden; /* Write message on the debug file descriptor. The parameters are interpreted as for a `printf' call. All the lines buf the first @@ -564,11 +621,6 @@ extern void _dl_dprintf (int fd, const char *fmt, ...) problem. */ extern void _dl_signal_error (int errcode, const char *object, const char *occurred, const char *errstring) - internal_function - __attribute__ ((__noreturn__)); -extern void _dl_signal_error_internal (int errcode, const char *object, - const char *occurred, - const char *errstring) internal_function __attribute__ ((__noreturn__)) attribute_hidden; /* Like _dl_signal_error, but may return when called in the context of @@ -594,12 +646,6 @@ extern void _dl_receive_error (receiver_fct fct, void (*operate) (void *), extern struct link_map *_dl_map_object (struct link_map *loader, const char *name, int preloaded, int type, int trace_mode, int mode) - internal_function; -extern struct link_map *_dl_map_object_internal (struct link_map *loader, - const char *name, - int preloaded, - int type, int trace_mode, - int mode) internal_function attribute_hidden; /* Call _dl_map_object on the dependencies of MAP, and set up @@ -610,11 +656,6 @@ extern void _dl_map_object_deps (struct link_map *map, struct link_map **preloads, unsigned int npreloads, int trace_mode, int open_mode) - internal_function; -extern void _dl_map_object_deps_internal (struct link_map *map, - struct link_map **preloads, - unsigned int npreloads, - int trace_mode, int open_mode) internal_function attribute_hidden; /* Cache the locations of MAP's hash table. */ @@ -646,12 +687,6 @@ extern lookup_t _dl_lookup_symbol (const char *undef, const ElfW(Sym) **sym, struct r_scope_elem *symbol_scope[], int type_class, int flags) - internal_function; -extern lookup_t _dl_lookup_symbol_internal (const char *undef, - struct link_map *undef_map, - const ElfW(Sym) **sym, - struct r_scope_elem *symbolscope[], - int type_class, int flags) internal_function attribute_hidden; enum @@ -670,14 +705,6 @@ extern lookup_t _dl_lookup_versioned_symbol (const char *undef, struct r_scope_elem *symbol_scope[], const struct r_found_version *version, int type_class, int explicit) - internal_function; -extern lookup_t _dl_lookup_versioned_symbol_internal (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) internal_function attribute_hidden; /* For handling RTLD_NEXT we must be able to skip shared objects. */ @@ -713,10 +740,7 @@ extern struct link_map *_dl_new_object (char *realname, const char *libname, If LAZY is nonzero, don't relocate its PLT. */ extern void _dl_relocate_object (struct link_map *map, struct r_scope_elem *scope[], - int lazy, int consider_profiling); -extern void _dl_relocate_object_internal (struct link_map *map, - struct r_scope_elem *scope[], - int lazy, int consider_profiling) + int lazy, int consider_profiling) attribute_hidden; /* Protect PT_GNU_RELRO area. */ @@ -750,7 +774,7 @@ extern int _dl_check_map_versions (struct link_map *map, int verbose, /* Initialize the object in SCOPE by calling the constructors with ARGC, ARGV, and ENV as the parameters. */ extern void _dl_init (struct link_map *main_map, int argc, char **argv, - char **env) internal_function; + char **env) internal_function attribute_hidden; /* Call the finalizer functions of all shared objects whose initializer functions have completed. */ @@ -760,8 +784,7 @@ extern void _dl_fini (void) internal_function; any shared object mappings. The `r_state' member of `struct r_debug' says what change is taking place. This function's address is the value of the `r_brk' member. */ -extern void _dl_debug_state (void); -extern void _dl_debug_state_internal (void) attribute_hidden; +extern void _dl_debug_state (void) attribute_hidden; /* Initialize `struct r_debug' if it has not already been done. The argument is the run-time load address of the dynamic linker, to be put @@ -775,9 +798,6 @@ extern void _dl_init_paths (const char *library_path) internal_function; /* Gather the information needed to install the profiling tables and start the timers. */ extern void _dl_start_profile (struct link_map *map, const char *output_dir) - internal_function; -extern void _dl_start_profile_internal (struct link_map *map, - const char *output_dir) internal_function attribute_hidden; /* The actual functions used to keep book on the calls. */ @@ -813,8 +833,7 @@ extern const char *_dl_load_cache_lookup (const char *name) all the time since this would create problems when the file is replaced. Therefore we provide this function to close the file and open it again once needed. */ -extern void _dl_unload_cache (void); -extern void _dl_unload_cache_internal (void) attribute_hidden; +extern void _dl_unload_cache (void) attribute_hidden; /* System-dependent function to read a file's whole contents in the most convenient manner available. *SIZEP gets the size of the @@ -871,15 +890,20 @@ rtld_hidden_proto (_dl_allocate_tls_init) extern void _dl_deallocate_tls (void *tcb, bool dealloc_tcb) internal_function; rtld_hidden_proto (_dl_deallocate_tls) -/* Return the symbol address given the map of the module it is in and - the symbol record. */ -extern void *_dl_tls_symaddr (struct link_map *map, const ElfW(Sym) *ref) - internal_function; - #if defined USE_TLS extern void _dl_nothread_init_static_tls (struct link_map *) attribute_hidden; #endif +/* Find origin of the executable. */ +extern const char *_dl_get_origin (void) attribute_hidden; + +/* Count DSTs. */ +extern size_t _dl_dst_count (const char *name, int is_path) attribute_hidden; + +/* Substitute DST values. */ +extern char *_dl_dst_substitute (struct link_map *l, const char *name, + char *result, int is_path) attribute_hidden; + __END_DECLS #endif /* ldsodefs.h */ |