selftests/vDSO/parse_vdso.c

46 static struct vdso_info
64 } vdso_info;
101 	vdso_info.valid = false;
103 	vdso_info.load_addr = base;
111 	ELF(Phdr) *pt = (ELF(Phdr)*)(vdso_info.load_addr + hdr->e_phoff);
122 			vdso_info.load_offset =	base
137 	vdso_info.symstrings = 0;
138 	vdso_info.gnu_hash = 0;
139 	vdso_info.symtab = 0;
140 	vdso_info.versym = 0;
141 	vdso_info.verdef = 0;
145 			vdso_info.symstrings = (const char *)
147 				 + vdso_info.load_offset);
150 			vdso_info.symtab = (ELF(Sym) *)
152 				 + vdso_info.load_offset);
157 				 + vdso_info.load_offset);
160 			vdso_info.gnu_hash =
162 					      vdso_info.load_offset);
165 			vdso_info.versym = (ELF(Versym) *)
167 				 + vdso_info.load_offset);
170 			vdso_info.verdef = (ELF(Verdef) *)
172 				 + vdso_info.load_offset);
176 	if (!vdso_info.symstrings || !vdso_info.symtab ||
177 	    (!hash && !vdso_info.gnu_hash))
180 	if (!vdso_info.verdef)
181 		vdso_info.versym = 0;
184 	if (vdso_info.gnu_hash) {
185 		vdso_info.nbucket = vdso_info.gnu_hash[0];
189 		vdso_info.gnu_bucket = vdso_info.gnu_hash + 4 +
190 				       sizeof(size_t) / 4 * vdso_info.gnu_hash[2];
192 		vdso_info.nbucket = hash[0];
193 		vdso_info.nchain = hash[1];
194 		vdso_info.bucket = &hash[2];
195 		vdso_info.chain = &hash[vdso_info.nbucket + 2];
199 	vdso_info.valid = true;
222 	ELF(Verdef) *def = vdso_info.verdef;
237 		&& !strcmp(name, vdso_info.symstrings + aux->vda_name);
249 	if (strcmp(name, vdso_info.symstrings + sym->st_name))
253 	if (vdso_info.versym &&
254 	    !vdso_match_version(vdso_info.versym[i], version, ver_hash))
263 	if (!vdso_info.valid)
269 	if (vdso_info.gnu_hash) {
272 		i = vdso_info.gnu_bucket[h1 % vdso_info.nbucket];
276 		hashval = vdso_info.gnu_bucket + vdso_info.nbucket +
277 			  (i - vdso_info.gnu_hash[1]);
279 			ELF(Sym) *sym = &vdso_info.symtab[i];
283 				return (void *)(vdso_info.load_offset +
289 		i = vdso_info.bucket[elf_hash(name) % vdso_info.nbucket];
290 		for (; i; i = vdso_info.chain[i]) {
291 			ELF(Sym) *sym = &vdso_info.symtab[i];
294 				return (void *)(vdso_info.load_offset +