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2002-09-26  Ulrich Drepper  <drepper@redhat.com>

	* elf/dynamic-link.h (elf_get_dynamic_info): Relocate DT_HASH entry
	if necessary.
	* elf/dl-lookup.c (_dl_setup_hash): DT_HASH entry is already relocated.
	* elf/dl-addr.c (_dl_addr): Use .hash[1] entry to determine end of the
	symbol table if necessary.
This commit is contained in:
Ulrich Drepper 2002-09-27 03:17:20 +00:00
parent 58c9f058a2
commit 9a88a2d7b3
3 changed files with 22 additions and 4 deletions
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8
ChangeLog
View file

@ -1,3 +1,11 @@
2002-09-26 Ulrich Drepper <drepper@redhat.com>
* elf/dynamic-link.h (elf_get_dynamic_info): Relocate DT_HASH entry
if necessary.
* elf/dl-lookup.c (_dl_setup_hash): DT_HASH entry is already relocated.
* elf/dl-addr.c (_dl_addr): Use .hash[1] entry to determine end of the
symbol table if necessary.
2002-09-26 Roland McGrath <roland@redhat.com>
* stdlib/longlong.h: Replaced with current version from GCC mainline,

16
elf/dl-addr.c
View file

@ -28,7 +28,7 @@ _dl_addr (const void *address, Dl_info *info)
{
const ElfW(Addr) addr = DL_LOOKUP_ADDRESS (address);
struct link_map *l, *match;
const ElfW(Sym) *symtab, *matchsym;
const ElfW(Sym) *symtab, *matchsym, *symtabend;
const char *strtab;
ElfW(Word) strtabsize;
@ -71,11 +71,21 @@ _dl_addr (const void *address, Dl_info *info)
symtab = (const void *) D_PTR (match, l_info[DT_SYMTAB]);
strtab = (const void *) D_PTR (match, l_info[DT_STRTAB]);
strtabsize = match->l_info[DT_STRSZ]->d_un.d_val;
if (match->l_info[DT_HASH] != NULL)
symtabend = symtab + ((Elf_Symndx *) D_PTR (match, l_info[DT_HASH]))[1];
else
/* There is no direct way to determine the number of symbols in the
dynamic symbol table and no hash table is present. The ELF
binary is ill-formed but what shall we do? Use the beginning of
the string table which generally follows the symbol table. */
symtabend = strtab;
/* We assume that the string table follows the symbol table, because
there is no way in ELF to know the size of the dynamic symbol table!! */
for (matchsym = NULL; (void *) symtab < (void *) strtab; ++symtab)
for (matchsym = NULL; (void *) symtab < (void *) symtabend; ++symtab)
if (addr >= match->l_addr + symtab->st_value
&& ((symtab->st_size == 0 && addr == match->l_addr + symtab->st_value)
|| addr < match->l_addr + symtab->st_value + symtab->st_size)
@ -83,7 +93,7 @@ _dl_addr (const void *address, Dl_info *info)
&& (matchsym == NULL || matchsym->st_value < symtab->st_value)
&& (ELFW(ST_BIND) (symtab->st_info) == STB_GLOBAL
|| ELFW(ST_BIND) (symtab->st_info) == STB_WEAK))
matchsym = symtab;
matchsym = (ElfW(Sym) *) symtab;
if (matchsym)
{

2
elf/dl-lookup.c
View file

@ -587,7 +587,7 @@ _dl_setup_hash (struct link_map *map)
if (!map->l_info[DT_HASH])
return;
hash = (void *)(map->l_addr + map->l_info[DT_HASH]->d_un.d_ptr);
hash = (void *) D_PTR (map, l_info[DT_HASH]);
map->l_nbuckets = *hash++;
nchain = *hash++;