diff options
Diffstat (limited to 'elf/dl-addr.c')
| -rw-r--r-- | elf/dl-addr.c | 36 |
1 files changed, 21 insertions, 15 deletions
diff --git a/elf/dl-addr.c b/elf/dl-addr.c index e131055..17745b5 100644 --- a/elf/dl-addr.c +++ b/elf/dl-addr.c @@ -134,22 +134,12 @@ _dl_addr (const void *address, Dl_info *info, /* Find the highest-addressed object that ADDRESS is not below. */ for (Lmid_t ns = 0; ns < DL_NNS; ++ns) for (struct link_map *l = GL(dl_ns)[ns]._ns_loaded; l; l = l->l_next) - if (addr >= l->l_map_start && addr < l->l_map_end) + if (addr >= l->l_map_start && addr < l->l_map_end + && (l->l_contiguous || _dl_addr_inside_object (l, addr))) { - /* Make sure it lies within one of L's segments. */ - 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) - { - if (reladdr - l->l_phdr[n].p_vaddr >= 0 - && reladdr - l->l_phdr[n].p_vaddr < l->l_phdr[n].p_memsz) - { - determine_info (addr, l, info, mapp, symbolp); - result = 1; - goto out; - } - } + determine_info (addr, l, info, mapp, symbolp); + result = 1; + goto out; } out: @@ -158,3 +148,19 @@ _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; +} |