diff options
Diffstat (limited to 'elf/link.h')
| -rw-r--r-- | elf/link.h | 41 |
1 files changed, 33 insertions, 8 deletions
diff --git a/elf/link.h b/elf/link.h index e31dd2dd65..ecf0469b7a 100644 --- a/elf/link.h +++ b/elf/link.h @@ -80,6 +80,24 @@ struct libname_list; struct r_found_version; struct r_search_path_elem; +/* Forward declaration. */ +struct link_map; + +/* Structure to describe a single list of scope elements. The lookup + functions get passed an array of pointers to such structures. */ +struct r_scope_elem +{ + /* Array of maps for the scope. */ + struct link_map **r_list; + /* Number of entries in the scope. */ + unsigned int r_nlist; + + /* Array of maps which also includes duplicates. */ + struct link_map **r_duplist; + /* Number of elements in this list. */ + unsigned int r_nduplist; +}; + /* Structure describing a loaded shared object. The `l_next' and `l_prev' members form a chain of all the shared objects loaded at startup. @@ -119,15 +137,14 @@ struct link_map ElfW(Half) l_phnum; /* Number of program header entries. */ /* Array of DT_NEEDED dependencies and their dependencies, in - dependency order for symbol lookup. This is null before the - dependencies have been loaded. */ - struct link_map **l_searchlist; - unsigned int l_nsearchlist; + dependency order for symbol lookup (with and without + duplicates). There is no entry before the dependencies have + been loaded. */ + struct r_scope_elem l_searchlist; - /* We keep another list in which we keep duplicates. This is - needed in _dl_lookup_symbol_skip to implemented RTLD_NEXT. */ - struct link_map **l_dupsearchlist; - unsigned int l_ndupsearchlist; + /* We need a special searchlist to process objects marked with + DT_SYMBOLIC. */ + struct r_scope_elem l_symbolic_searchlist; /* Dependent object that first caused this object to be loaded. */ struct link_map *l_loader; @@ -168,6 +185,14 @@ struct link_map /* Start and finish of memory map for this object. l_map_start need not be the same as l_addr. */ ElfW(Addr) l_map_start, l_map_end; + + /* This is an array defining the lookup scope for this link map. + There are at most three different scope lists. */ + struct r_scope_elem *l_scope[4]; + + /* A similar array, this time only with the local scope. This is + used occasionally. */ + struct r_scope_elem *l_local_scope[2]; }; #endif /* link.h */ |