diff options
Diffstat (limited to 'elf/dl-lookup.c')
| -rw-r--r-- | elf/dl-lookup.c | 93 |
1 files changed, 65 insertions, 28 deletions
diff --git a/elf/dl-lookup.c b/elf/dl-lookup.c index f8bb9e1..3acd71f 100644 --- a/elf/dl-lookup.c +++ b/elf/dl-lookup.c @@ -75,16 +75,15 @@ __libc_lock_define (extern, _dl_load_lock) without versioning. gcc is not able to optimize a single function definition serving for both purposes so we define two functions. */ #define VERSIONED 0 -#define PROTECTED 0 #include "do-lookup.h" #define VERSIONED 1 -#define PROTECTED 0 #include "do-lookup.h" /* Add extra dependency on MAP to UNDEF_MAP. */ static int +internal_function add_dependency (struct link_map *undef_map, struct link_map *map) { struct link_map **list; @@ -180,6 +179,19 @@ add_dependency (struct link_map *undef_map, struct link_map *map) return result; } +static int +internal_function +_dl_do_lookup (const char *undef_name, unsigned long int hash, + const ElfW(Sym) *ref, struct sym_val *result, + struct r_scope_elem *scope, size_t i, + struct link_map *skip, int noexec, int noplt); +static int +internal_function +_dl_do_lookup_versioned (const char *undef_name, unsigned long int hash, + const ElfW(Sym) *ref, struct sym_val *result, + struct r_scope_elem *scope, size_t i, + const struct r_found_version *const version, + struct link_map *skip, int noexec, int noplt); /* Search loaded objects' symbol tables for a definition of the symbol UNDEF_NAME. */ @@ -261,8 +273,8 @@ _dl_lookup_symbol (const char *undef_name, struct link_map *undef_map, struct sym_val protected_value = { NULL, NULL }; for (scope = symbol_scope; *scope; ++scope) - if (do_lookup (undef_name, hash, *ref, &protected_value, *scope, 0, - NULL, 0, 1)) + if (_dl_do_lookup (undef_name, hash, *ref, &protected_value, *scope, + 0, NULL, 0, 1)) break; if (protected_value.s == NULL || protected_value.m == undef_map) @@ -299,15 +311,14 @@ _dl_lookup_symbol_skip (const char *undef_name, /* Search the relevant loaded objects for a definition. */ scope = symbol_scope; - for (i = 0; (*scope)->r_duplist[i] != skip_map; ++i) - assert (i < (*scope)->r_nduplist); + for (i = 0; (*scope)->r_list[i] != skip_map; ++i) + assert (i < (*scope)->r_nlist); - if (i >= (*scope)->r_nlist - || ! do_lookup (undef_name, hash, *ref, ¤t_value, *scope, i, - skip_map, 0, 0)) + if (! _dl_do_lookup (undef_name, hash, *ref, ¤t_value, *scope, i, + skip_map, 0, 0)) while (*++scope) - if (do_lookup (undef_name, hash, *ref, ¤t_value, *scope, 0, - skip_map, 0, 0)) + if (_dl_do_lookup (undef_name, hash, *ref, ¤t_value, *scope, 0, + skip_map, 0, 0)) break; if (__builtin_expect (current_value.s == NULL, 0)) @@ -338,11 +349,11 @@ _dl_lookup_symbol_skip (const char *undef_name, struct sym_val protected_value = { NULL, NULL }; if (i >= (*scope)->r_nlist - || !do_lookup (undef_name, hash, *ref, &protected_value, *scope, i, - skip_map, 0, 1)) + || !_dl_do_lookup (undef_name, hash, *ref, &protected_value, *scope, + i, skip_map, 0, 1)) while (*++scope) - if (do_lookup (undef_name, hash, *ref, &protected_value, *scope, 0, - skip_map, 0, 1)) + if (_dl_do_lookup (undef_name, hash, *ref, &protected_value, *scope, + 0, skip_map, 0, 1)) break; if (protected_value.s == NULL || protected_value.m == undef_map) @@ -465,8 +476,8 @@ _dl_lookup_versioned_symbol (const char *undef_name, struct sym_val protected_value = { NULL, NULL }; for (scope = symbol_scope; *scope; ++scope) - if (do_lookup_versioned (undef_name, hash, *ref, &protected_value, - *scope, 0, version, NULL, 0, 1)) + if (_dl_do_lookup_versioned (undef_name, hash, *ref, &protected_value, + *scope, 0, version, NULL, 0, 1)) break; if (protected_value.s == NULL || protected_value.m == undef_map) @@ -502,15 +513,14 @@ _dl_lookup_versioned_symbol_skip (const char *undef_name, /* Search the relevant loaded objects for a definition. */ scope = symbol_scope; - for (i = 0; (*scope)->r_duplist[i] != skip_map; ++i) - assert (i < (*scope)->r_nduplist); + for (i = 0; (*scope)->r_list[i] != skip_map; ++i) + assert (i < (*scope)->r_nlist); - if (i >= (*scope)->r_nlist - || ! do_lookup_versioned (undef_name, hash, *ref, ¤t_value, - *scope, i, version, skip_map, 0, 0)) + if (! _dl_do_lookup_versioned (undef_name, hash, *ref, ¤t_value, + *scope, i, version, skip_map, 0, 0)) while (*++scope) - if (do_lookup_versioned (undef_name, hash, *ref, ¤t_value, *scope, - 0, version, skip_map, 0, 0)) + if (_dl_do_lookup_versioned (undef_name, hash, *ref, ¤t_value, + *scope, 0, version, skip_map, 0, 0)) break; if (__builtin_expect (current_value.s == NULL, 0)) @@ -554,11 +564,13 @@ _dl_lookup_versioned_symbol_skip (const char *undef_name, struct sym_val protected_value = { NULL, NULL }; if (i >= (*scope)->r_nlist - || !do_lookup_versioned (undef_name, hash, *ref, &protected_value, - *scope, i, version, skip_map, 0, 1)) + || !_dl_do_lookup_versioned (undef_name, hash, *ref, + &protected_value, *scope, i, version, + skip_map, 0, 1)) while (*++scope) - if (do_lookup_versioned (undef_name, hash, *ref, &protected_value, - *scope, 0, version, skip_map, 0, 1)) + if (_dl_do_lookup_versioned (undef_name, hash, *ref, + &protected_value, *scope, 0, version, + skip_map, 0, 1)) break; if (protected_value.s == NULL || protected_value.m == undef_map) @@ -591,3 +603,28 @@ _dl_setup_hash (struct link_map *map) hash += map->l_nbuckets; map->l_chain = hash; } + +/* These are here so that we only inline do_lookup{,_versioned} in the common + case, not everywhere. */ +static int +internal_function +_dl_do_lookup (const char *undef_name, unsigned long int hash, + const ElfW(Sym) *ref, struct sym_val *result, + struct r_scope_elem *scope, size_t i, + struct link_map *skip, int noexec, int noplt) +{ + return do_lookup (undef_name, hash, ref, result, scope, i, skip, noexec, + noplt); +} + +static int +internal_function +_dl_do_lookup_versioned (const char *undef_name, unsigned long int hash, + const ElfW(Sym) *ref, struct sym_val *result, + struct r_scope_elem *scope, size_t i, + const struct r_found_version *const version, + struct link_map *skip, int noexec, int noplt) +{ + return do_lookup_versioned (undef_name, hash, ref, result, scope, i, + version, skip, noexec, noplt); +} |