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Diffstat (limited to 'elf/dl-addr.c')
-rw-r--r--elf/dl-addr.c25
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;
-}