diff options
Diffstat (limited to 'elf/dl-addr.c')
-rw-r--r-- | elf/dl-addr.c | 25 |
1 files changed, 5 insertions, 20 deletions
diff --git a/elf/dl-addr.c b/elf/dl-addr.c index 291ff55816..e6c7d02094 100644 --- a/elf/dl-addr.c +++ b/elf/dl-addr.c @@ -1,5 +1,5 @@ /* Locate the shared object symbol nearest a given address. - Copyright (C) 1996-2016 Free Software Foundation, Inc. + Copyright (C) 1996-2018 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 @@ -42,8 +42,7 @@ determine_info (const ElfW(Addr) addr, struct link_map *match, Dl_info *info, ElfW(Word) strtabsize = match->l_info[DT_STRSZ]->d_un.d_val; const ElfW(Sym) *matchsym = NULL; - if (match->l_info[DT_ADDRTAGIDX (DT_GNU_HASH) + DT_NUM + DT_THISPROCNUM - + DT_VERSIONTAGNUM + DT_EXTRANUM + DT_VALNUM] != NULL) + if (match->l_info[ADDRIDX (DT_GNU_HASH)] != NULL) { /* We look at all symbol table entries referenced by the hash table. */ @@ -60,6 +59,7 @@ determine_info (const ElfW(Addr) addr, struct link_map *match, Dl_info *info, we can omit that test here. */ if ((symtab[symndx].st_shndx != SHN_UNDEF || symtab[symndx].st_value != 0) + && symtab[symndx].st_shndx != SHN_ABS && ELFW(ST_TYPE) (symtab[symndx].st_info) != STT_TLS && DL_ADDR_SYM_MATCH (match, &symtab[symndx], matchsym, addr) @@ -88,9 +88,11 @@ determine_info (const ElfW(Addr) addr, struct link_map *match, Dl_info *info, for (; (void *) symtab < (void *) symtabend; ++symtab) if ((ELFW(ST_BIND) (symtab->st_info) == STB_GLOBAL || ELFW(ST_BIND) (symtab->st_info) == STB_WEAK) + && __glibc_likely (!dl_symbol_visibility_binds_local_p (symtab)) && ELFW(ST_TYPE) (symtab->st_info) != STT_TLS && (symtab->st_shndx != SHN_UNDEF || symtab->st_value != 0) + && symtab->st_shndx != SHN_ABS && DL_ADDR_SYM_MATCH (match, symtab, matchsym, addr) && symtab->st_name < strtabsize) matchsym = (ElfW(Sym) *) symtab; @@ -120,7 +122,6 @@ determine_info (const ElfW(Addr) addr, struct link_map *match, Dl_info *info, int -internal_function _dl_addr (const void *address, Dl_info *info, struct link_map **mapp, const ElfW(Sym) **symbolp) { @@ -143,19 +144,3 @@ _dl_addr (const void *address, Dl_info *info, return result; } libc_hidden_def (_dl_addr) - -/* Return non-zero if ADDR lies within one of L's segments. */ -int -internal_function -_dl_addr_inside_object (struct link_map *l, const ElfW(Addr) addr) -{ - int n = l->l_phnum; - const ElfW(Addr) reladdr = addr - l->l_addr; - - while (--n >= 0) - if (l->l_phdr[n].p_type == PT_LOAD - && reladdr - l->l_phdr[n].p_vaddr >= 0 - && reladdr - l->l_phdr[n].p_vaddr < l->l_phdr[n].p_memsz) - return 1; - return 0; -} |