172 _current_method = current_method;
173 }
174
175 // Case where we just find the method and don't check access against the current class, used by JavaCalls
176 LinkInfo(Klass* resolved_klass, Symbol*name, Symbol* signature) :
177 LinkInfo(resolved_klass, name, signature, nullptr, AccessCheck::skip, LoaderConstraintCheck::skip,
178 JVM_CONSTANT_Invalid) {}
179
180 // accessors
181 Symbol* name() const { return _name; }
182 Symbol* signature() const { return _signature; }
183 Klass* resolved_klass() const { return _resolved_klass; }
184 Klass* current_klass() const { return _current_klass; }
185 Method* current_method() const { return _current_method(); }
186 constantTag tag() const { return _tag; }
187 bool check_access() const { return _check_access; }
188 bool check_loader_constraints() const { return _check_loader_constraints; }
189 void print() PRODUCT_RETURN;
190 };
191
192 // Link information for getfield/putfield & getstatic/putstatic bytecodes
193 // is represented using a fieldDescriptor.
194
195 // The LinkResolver is used to resolve constant-pool references at run-time.
196 // It does all necessary link-time checks & throws exceptions if necessary.
197
198 class LinkResolver: AllStatic {
199 friend class klassVtable;
200 friend class klassItable;
201
202 private:
203
204 static Method* lookup_method_in_klasses(const LinkInfo& link_info,
205 bool checkpolymorphism,
206 bool in_imethod_resolve);
207 static Method* lookup_method_in_interfaces(const LinkInfo& link_info);
208
209 static Method* lookup_polymorphic_method(const LinkInfo& link_info,
210 Handle *appendix_result_or_null, TRAPS);
211 JVMCI_ONLY(public:) // Needed for CompilerToVM.resolveMethod()
250 Klass* recv_klass,
251 bool check_null_and_abstract,
252 bool is_abstract_interpretation, TRAPS);
253
254 static bool resolve_previously_linked_invokehandle(CallInfo& result,
255 const LinkInfo& link_info,
256 const constantPoolHandle& pool,
257 int index, TRAPS);
258
259 static void check_field_accessability(Klass* ref_klass,
260 Klass* resolved_klass,
261 Klass* sel_klass,
262 const fieldDescriptor& fd, TRAPS);
263 static void check_method_accessability(Klass* ref_klass,
264 Klass* resolved_klass,
265 Klass* sel_klass,
266 const methodHandle& sel_method, TRAPS);
267
268 // runtime resolving from constant pool
269 static void resolve_invokestatic (CallInfo& result,
270 const constantPoolHandle& pool, int index, TRAPS);
271 static void resolve_invokespecial (CallInfo& result, Handle recv,
272 const constantPoolHandle& pool, int index, TRAPS);
273 static void resolve_invokevirtual (CallInfo& result, Handle recv,
274 const constantPoolHandle& pool, int index, TRAPS);
275 static void resolve_invokeinterface(CallInfo& result, Handle recv,
276 const constantPoolHandle& pool, int index, TRAPS);
277 static void resolve_invokedynamic (CallInfo& result,
278 const constantPoolHandle& pool, int index, TRAPS);
279 static void resolve_invokehandle (CallInfo& result,
280 const constantPoolHandle& pool, int index, TRAPS);
281 public:
282 // constant pool resolving
283 static void check_klass_accessibility(Klass* ref_klass, Klass* sel_klass, TRAPS);
284
285 // static resolving calls (will not run any Java code);
286 // used only from Bytecode_invoke::static_target
287 static Method* resolve_method_statically(Bytecodes::Code code,
288 const constantPoolHandle& pool,
289 int index, TRAPS);
290
291 static void resolve_continuation_enter(CallInfo& callinfo, TRAPS);
292
293 static void resolve_field_access(fieldDescriptor& result,
294 const constantPoolHandle& pool,
295 int index,
296 const methodHandle& method,
297 Bytecodes::Code byte,
298 bool initialize_class, TRAPS);
299 static void resolve_field_access(fieldDescriptor& result,
300 const constantPoolHandle& pool,
301 int index,
302 const methodHandle& method,
303 Bytecodes::Code byte, TRAPS) {
304 resolve_field_access(result, pool, index, method, byte,
305 /* initialize_class*/true, THREAD);
306 }
307 static void resolve_field(fieldDescriptor& result, const LinkInfo& link_info,
308 Bytecodes::Code access_kind,
309 bool initialize_class, TRAPS);
310
311 static void resolve_static_call (CallInfo& result,
312 const LinkInfo& link_info,
313 bool initialize_klass, TRAPS);
314 static void resolve_special_call (CallInfo& result,
315 Handle recv,
316 const LinkInfo& link_info,
317 TRAPS);
318 static void resolve_virtual_call (CallInfo& result, Handle recv, Klass* recv_klass,
319 const LinkInfo& link_info,
320 bool check_null_and_abstract, TRAPS);
321 static void resolve_interface_call(CallInfo& result, Handle recv, Klass* recv_klass,
322 const LinkInfo& link_info,
323 bool check_null_and_abstract, TRAPS);
324 static void resolve_handle_call (CallInfo& result,
325 const LinkInfo& link_info, TRAPS);
326 static void resolve_dynamic_call (CallInfo& result,
327 BootstrapInfo& bootstrap_specifier, TRAPS);
328
329 static void cds_resolve_virtual_call (CallInfo& result, const LinkInfo& link_info, TRAPS);
330 static void cds_resolve_interface_call(CallInfo& result, const LinkInfo& link_info, TRAPS);
331 static void cds_resolve_special_call (CallInfo& result, const LinkInfo& link_info, TRAPS);
332
333 // same as above for compile-time resolution; but returns null handle instead of throwing
335 static Method* resolve_virtual_call_or_null(Klass* receiver_klass,
336 const LinkInfo& link_info);
337 static Method* resolve_interface_call_or_null(Klass* receiver_klass,
338 const LinkInfo& link_info);
339 static Method* resolve_static_call_or_null(const LinkInfo& link_info);
340 static Method* resolve_special_call_or_null(const LinkInfo& link_info);
341
342 static int vtable_index_of_interface_method(Klass* klass, const methodHandle& resolved_method);
343
344 // same as above for compile-time resolution; returns vtable_index if current_klass if linked
345 static int resolve_virtual_vtable_index (Klass* receiver_klass,
346 const LinkInfo& link_info);
347
348 // static resolving for compiler (does not throw exceptions, returns null handle if unsuccessful)
349 static Method* linktime_resolve_virtual_method_or_null (const LinkInfo& link_info);
350 static Method* linktime_resolve_interface_method_or_null(const LinkInfo& link_info);
351
352 // runtime resolving from constant pool
353 static void resolve_invoke(CallInfo& result, Handle recv,
354 const constantPoolHandle& pool, int index,
355 Bytecodes::Code byte, TRAPS);
356
357 // runtime resolving from attached method
358 static void resolve_invoke(CallInfo& result, Handle& recv,
359 const methodHandle& attached_method,
360 Bytecodes::Code byte, TRAPS);
361
362 // Only resolved method known.
363 static void throw_abstract_method_error(const methodHandle& resolved_method, TRAPS) {
364 throw_abstract_method_error(resolved_method, methodHandle(), nullptr, CHECK);
365 }
366 // Resolved method and receiver klass know.
367 static void throw_abstract_method_error(const methodHandle& resolved_method, Klass *recv_klass, TRAPS) {
368 throw_abstract_method_error(resolved_method, methodHandle(), recv_klass, CHECK);
369 }
370 // Selected method is abstract.
371 static void throw_abstract_method_error(const methodHandle& resolved_method,
372 const methodHandle& selected_method,
373 Klass *recv_klass, TRAPS);
374 };
375 #endif // SHARE_INTERPRETER_LINKRESOLVER_HPP
|
172 _current_method = current_method;
173 }
174
175 // Case where we just find the method and don't check access against the current class, used by JavaCalls
176 LinkInfo(Klass* resolved_klass, Symbol*name, Symbol* signature) :
177 LinkInfo(resolved_klass, name, signature, nullptr, AccessCheck::skip, LoaderConstraintCheck::skip,
178 JVM_CONSTANT_Invalid) {}
179
180 // accessors
181 Symbol* name() const { return _name; }
182 Symbol* signature() const { return _signature; }
183 Klass* resolved_klass() const { return _resolved_klass; }
184 Klass* current_klass() const { return _current_klass; }
185 Method* current_method() const { return _current_method(); }
186 constantTag tag() const { return _tag; }
187 bool check_access() const { return _check_access; }
188 bool check_loader_constraints() const { return _check_loader_constraints; }
189 void print() PRODUCT_RETURN;
190 };
191
192 enum class StaticMode : uint8_t {
193 dont_initialize_klass,
194 initialize_klass,
195 initialize_klass_preemptable
196 };
197
198 // Link information for getfield/putfield & getstatic/putstatic bytecodes
199 // is represented using a fieldDescriptor.
200
201 // The LinkResolver is used to resolve constant-pool references at run-time.
202 // It does all necessary link-time checks & throws exceptions if necessary.
203
204 class LinkResolver: AllStatic {
205 friend class klassVtable;
206 friend class klassItable;
207
208 private:
209
210 static Method* lookup_method_in_klasses(const LinkInfo& link_info,
211 bool checkpolymorphism,
212 bool in_imethod_resolve);
213 static Method* lookup_method_in_interfaces(const LinkInfo& link_info);
214
215 static Method* lookup_polymorphic_method(const LinkInfo& link_info,
216 Handle *appendix_result_or_null, TRAPS);
217 JVMCI_ONLY(public:) // Needed for CompilerToVM.resolveMethod()
256 Klass* recv_klass,
257 bool check_null_and_abstract,
258 bool is_abstract_interpretation, TRAPS);
259
260 static bool resolve_previously_linked_invokehandle(CallInfo& result,
261 const LinkInfo& link_info,
262 const constantPoolHandle& pool,
263 int index, TRAPS);
264
265 static void check_field_accessability(Klass* ref_klass,
266 Klass* resolved_klass,
267 Klass* sel_klass,
268 const fieldDescriptor& fd, TRAPS);
269 static void check_method_accessability(Klass* ref_klass,
270 Klass* resolved_klass,
271 Klass* sel_klass,
272 const methodHandle& sel_method, TRAPS);
273
274 // runtime resolving from constant pool
275 static void resolve_invokestatic (CallInfo& result,
276 const constantPoolHandle& pool, int index, StaticMode mode, TRAPS);
277 static void resolve_invokespecial (CallInfo& result, Handle recv,
278 const constantPoolHandle& pool, int index, TRAPS);
279 static void resolve_invokevirtual (CallInfo& result, Handle recv,
280 const constantPoolHandle& pool, int index, TRAPS);
281 static void resolve_invokeinterface(CallInfo& result, Handle recv,
282 const constantPoolHandle& pool, int index, TRAPS);
283 static void resolve_invokedynamic (CallInfo& result,
284 const constantPoolHandle& pool, int index, TRAPS);
285 static void resolve_invokehandle (CallInfo& result,
286 const constantPoolHandle& pool, int index, TRAPS);
287 public:
288 // constant pool resolving
289 static void check_klass_accessibility(Klass* ref_klass, Klass* sel_klass, TRAPS);
290
291 // static resolving calls (will not run any Java code);
292 // used only from Bytecode_invoke::static_target
293 static Method* resolve_method_statically(Bytecodes::Code code,
294 const constantPoolHandle& pool,
295 int index, TRAPS);
296
297 static void resolve_continuation_enter(CallInfo& callinfo, TRAPS);
298
299 static void resolve_field_access(fieldDescriptor& result,
300 const constantPoolHandle& pool,
301 int index,
302 const methodHandle& method,
303 Bytecodes::Code byte,
304 StaticMode mode, TRAPS);
305 static void resolve_field_access(fieldDescriptor& result,
306 const constantPoolHandle& pool,
307 int index,
308 const methodHandle& method,
309 Bytecodes::Code byte, TRAPS) {
310 resolve_field_access(result, pool, index, method, byte,
311 StaticMode::initialize_klass, THREAD);
312 }
313 static void resolve_field(fieldDescriptor& result, const LinkInfo& link_info,
314 Bytecodes::Code access_kind,
315 StaticMode mode, TRAPS);
316
317 static void resolve_static_call (CallInfo& result,
318 const LinkInfo& link_info,
319 StaticMode mode, TRAPS);
320 static void resolve_special_call (CallInfo& result,
321 Handle recv,
322 const LinkInfo& link_info,
323 TRAPS);
324 static void resolve_virtual_call (CallInfo& result, Handle recv, Klass* recv_klass,
325 const LinkInfo& link_info,
326 bool check_null_and_abstract, TRAPS);
327 static void resolve_interface_call(CallInfo& result, Handle recv, Klass* recv_klass,
328 const LinkInfo& link_info,
329 bool check_null_and_abstract, TRAPS);
330 static void resolve_handle_call (CallInfo& result,
331 const LinkInfo& link_info, TRAPS);
332 static void resolve_dynamic_call (CallInfo& result,
333 BootstrapInfo& bootstrap_specifier, TRAPS);
334
335 static void cds_resolve_virtual_call (CallInfo& result, const LinkInfo& link_info, TRAPS);
336 static void cds_resolve_interface_call(CallInfo& result, const LinkInfo& link_info, TRAPS);
337 static void cds_resolve_special_call (CallInfo& result, const LinkInfo& link_info, TRAPS);
338
339 // same as above for compile-time resolution; but returns null handle instead of throwing
341 static Method* resolve_virtual_call_or_null(Klass* receiver_klass,
342 const LinkInfo& link_info);
343 static Method* resolve_interface_call_or_null(Klass* receiver_klass,
344 const LinkInfo& link_info);
345 static Method* resolve_static_call_or_null(const LinkInfo& link_info);
346 static Method* resolve_special_call_or_null(const LinkInfo& link_info);
347
348 static int vtable_index_of_interface_method(Klass* klass, const methodHandle& resolved_method);
349
350 // same as above for compile-time resolution; returns vtable_index if current_klass if linked
351 static int resolve_virtual_vtable_index (Klass* receiver_klass,
352 const LinkInfo& link_info);
353
354 // static resolving for compiler (does not throw exceptions, returns null handle if unsuccessful)
355 static Method* linktime_resolve_virtual_method_or_null (const LinkInfo& link_info);
356 static Method* linktime_resolve_interface_method_or_null(const LinkInfo& link_info);
357
358 // runtime resolving from constant pool
359 static void resolve_invoke(CallInfo& result, Handle recv,
360 const constantPoolHandle& pool, int index,
361 Bytecodes::Code byte, StaticMode static_mode, TRAPS);
362 static void resolve_invoke(CallInfo& result, Handle recv,
363 const constantPoolHandle& pool, int index,
364 Bytecodes::Code byte, TRAPS) {
365 resolve_invoke(result, recv, pool, index, byte, StaticMode::initialize_klass, THREAD);
366 }
367
368 // runtime resolving from attached method
369 static void resolve_invoke(CallInfo& result, Handle& recv,
370 const methodHandle& attached_method,
371 Bytecodes::Code byte, TRAPS);
372
373 // Only resolved method known.
374 static void throw_abstract_method_error(const methodHandle& resolved_method, TRAPS) {
375 throw_abstract_method_error(resolved_method, methodHandle(), nullptr, CHECK);
376 }
377 // Resolved method and receiver klass know.
378 static void throw_abstract_method_error(const methodHandle& resolved_method, Klass *recv_klass, TRAPS) {
379 throw_abstract_method_error(resolved_method, methodHandle(), recv_klass, CHECK);
380 }
381 // Selected method is abstract.
382 static void throw_abstract_method_error(const methodHandle& resolved_method,
383 const methodHandle& selected_method,
384 Klass *recv_klass, TRAPS);
385 };
386 #endif // SHARE_INTERPRETER_LINKRESOLVER_HPP
|