of elf_resolve's loadaddr field for the main application.
Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
*/
#ifndef DL_ADDR_IN_LOADADDR
# define DL_ADDR_IN_LOADADDR(ADDR, TPNT, TFROM) \
- ((void*)(TPNT)->loadaddr < (void*)(ADDR) \
- && (!(TFROM) || (TFROM)->loadaddr < (TPNT)->loadaddr))
+ ((void*)(TPNT)->mapaddr < (void*)(ADDR) \
+ && (!(TFROM) || (TFROM)->mapaddr < (TPNT)->mapaddr))
#endif
/* This is called from dladdr() to give targets that use function descriptors
struct elf_resolve * next;
struct elf_resolve * prev;
/* Nothing after this address is used by gdb. */
+ DL_LOADADDR_TYPE mapaddr; /* Address at which ELF segments (either main app and DSO) are mapped into */
enum {elf_lib, elf_executable,program_interpreter, loaded_file} libtype;
struct dyn_elf * symbol_scope;
unsigned short usage_count;
hash_addr += tpnt->nbucket;
tpnt->chains = hash_addr;
}
- tpnt->loadaddr = loadaddr;
+ tpnt->loadaddr = tpnt->mapaddr = loadaddr;
for (i = 0; i < DYNAMIC_SIZE; i++)
tpnt->dynamic_info[i] = dynamic_info[i];
return tpnt;
char **argv
DL_GET_READY_TO_RUN_EXTRA_PARMS)
{
+ DL_LOADADDR_TYPE app_loadaddr = NULL;
ElfW(Phdr) *ppnt;
ElfW(Dyn) *dpnt;
char *lpntstr;
relro_addr = ppnt->p_vaddr;
relro_size = ppnt->p_memsz;
}
+ if (!app_loadaddr && (ppnt->p_type == PT_LOAD)) {
+ app_loadaddr = ppnt->p_vaddr;
+ }
if (ppnt->p_type == PT_DYNAMIC) {
dpnt = (ElfW(Dyn) *) DL_RELOC_ADDR(app_tpnt->loadaddr, ppnt->p_vaddr);
_dl_parse_dynamic_info(dpnt, app_tpnt->dynamic_info, debug_addr, app_tpnt->loadaddr);
_dl_symbol_tables = rpnt = (struct dyn_elf *) _dl_malloc(sizeof(struct dyn_elf));
_dl_memset(rpnt, 0, sizeof(struct dyn_elf));
rpnt->dyn = _dl_loaded_modules;
+ app_tpnt->mapaddr = app_loadaddr;
app_tpnt->rtld_flags = unlazy | RTLD_GLOBAL;
app_tpnt->usage_count++;
app_tpnt->symbol_scope = _dl_symbol_tables;
char *strtab;
ElfW(Sym) *symtab;
unsigned int hn, si, sn, sf;
- ElfW(Addr) sa;
+ ElfW(Addr) sa = 0;
+
+ /* Set the info for the object the address lies in */
+ __info->dli_fname = pelf->libname;
+ __info->dli_fbase = (void *) DL_LOADADDR_BASE(pelf->mapaddr);
- sa = 0;
symtab = (ElfW(Sym) *) (pelf->dynamic_info[DT_SYMTAB]);
strtab = (char *) (pelf->dynamic_info[DT_STRTAB]);
sf = sn = 0;
+
+#ifdef __LDSO_GNU_HASH_SUPPORT__
+ if (pelf->l_gnu_bitmask) {
+ for (hn = 0; hn < pelf->nbucket; hn++) {
+ si = pelf->l_gnu_buckets[hn];
+ if (!si)
+ continue;
+
+ const Elf32_Word *hasharr = &pelf->l_gnu_chain_zero[si];
+ do {
+ ElfW(Addr) symbol_addr;
+
+ symbol_addr = (ElfW(Addr)) pelf->loadaddr + symtab[si].st_value;
+ if (symbol_addr <= (ElfW(Addr))__address && (!sf || sa < symbol_addr)) {
+ sa = symbol_addr;
+ sn = si;
+ sf = 1;
+ }
+ _dl_if_debug_print("Symbol \"%s\" at %p\n", strtab + symtab[si].st_name, symbol_addr);
+ ++si;
+ } while ((*hasharr++ & 1u) == 0);
+ }
+ } else
+#endif
for (hn = 0; hn < pelf->nbucket; hn++) {
for (si = pelf->elf_buckets[hn]; si; si = pelf->chains[si]) {
ElfW(Addr) symbol_addr;
}
if (sf) {
- __info->dli_fname = pelf->libname;
- __info->dli_fbase = (void *) DL_LOADADDR_BASE(pelf->loadaddr);
+ /* A nearest symbol has been found; fill the entries */
__info->dli_sname = strtab + symtab[sn].st_name;
__info->dli_saddr = (void *)sa;
+ } else {
+ /* No symbol found, fill entries with NULL value,
+ only the containing object will be returned. */
+ __info->dli_sname = NULL;
+ __info->dli_saddr = NULL;
}
return 1;
}