static uint_t
dt_module_syminit32(dt_module_t *dmp)
{
const Elf32_Sym *sym = dmp->dm_symtab.cts_data;
const char *base = dmp->dm_strtab.cts_data;
size_t ss_size = dmp->dm_strtab.cts_size;
uint_t i, n = dmp->dm_nsymelems;
uint_t asrsv = 0;
for (i = 0; i < n; i++, sym++) {
const char *name = base + sym->st_name;
uchar_t type = ELF32_ST_TYPE(sym->st_info);
if (type >= STT_NUM || type == STT_SECTION)
continue; /* skip sections and unknown types */
if (sym->st_name == 0 || sym->st_name >= ss_size)
continue; /* skip null or invalid names */
if (sym->st_value != 0 &&
(ELF32_ST_BIND(sym->st_info) != STB_LOCAL || sym->st_size))
asrsv++; /* reserve space in the address map */
dt_module_symhash_insert(dmp, name, i);
}
return (asrsv);
}
static uint_t
dt_module_syminit_macho_64(dt_module_t *dmp)
{
const struct nlist_64 *sym = (const struct nlist_64 *)(dmp->dm_symtab.cts_data);
const char *base = (const char *)dmp->dm_strtab.cts_data;
uint_t i, n = dmp->dm_nsymelems;
uint_t asrsv = 0;
for (i = 0; i < n; i++, sym++) {
const char *name = base + sym->n_un.n_strx;
uchar_t type = sym->n_type & (N_TYPE | N_EXT);
// Check that the symbol is a global and that it has a name.
if (((N_SECT | N_EXT) != type && (N_ABS | N_EXT) != type))
continue;
if (STT_FUNC != sym->n_desc && STT_OBJECT != sym->n_desc)
continue;
if (0 == sym->n_un.n_strx) // iff a null, "", name.
continue;
if ('_' == name[0])
name++; // Lop off omnipresent underscore to match DWARF convention
if (sym->n_value != 0)
asrsv++; /* reserve space in the address map */
dt_module_symhash_insert(dmp, name, i);
}
return (asrsv);
}
static uint_t
dt_module_syminit32(dt_module_t *dmp)
{
#if STT_NUM != (STT_TLS + 1)
#error "STT_NUM has grown. update dt_module_syminit32()"
#endif
Elf32_Sym *sym = dmp->dm_symtab.cts_data;
const char *base = dmp->dm_strtab.cts_data;
size_t ss_size = dmp->dm_strtab.cts_size;
uint_t i, n = dmp->dm_nsymelems;
uint_t asrsv = 0;
#if defined(__FreeBSD__)
GElf_Ehdr ehdr;
int is_elf_obj;
gelf_getehdr(dmp->dm_elf, &ehdr);
is_elf_obj = (ehdr.e_type == ET_REL);
#endif
for (i = 0; i < n; i++, sym++) {
const char *name = base + sym->st_name;
uchar_t type = ELF32_ST_TYPE(sym->st_info);
if (type >= STT_NUM || type == STT_SECTION)
continue; /* skip sections and unknown types */
if (sym->st_name == 0 || sym->st_name >= ss_size)
continue; /* skip null or invalid names */
if (sym->st_value != 0 &&
(ELF32_ST_BIND(sym->st_info) != STB_LOCAL || sym->st_size)) {
asrsv++; /* reserve space in the address map */
#if defined(__FreeBSD__)
sym->st_value += (Elf_Addr) dmp->dm_reloc_offset;
if (is_elf_obj && sym->st_shndx != SHN_UNDEF &&
sym->st_shndx < ehdr.e_shnum)
sym->st_value +=
dmp->dm_sec_offsets[sym->st_shndx];
#endif
}
dt_module_symhash_insert(dmp, name, i);
}
return (asrsv);
}
