162 int CompiledStaticCall::reloc_to_interp_stub() {
163 return 5;
164 }
165
166 void CompiledDirectStaticCall::set_to_interpreted(const methodHandle& callee, address entry) {
167 address stub = find_stub(/*is_aot*/ false);
168 guarantee(stub != NULL, "stub not found");
169
170 if (TraceICs) {
171 ResourceMark rm;
172 tty->print_cr("CompiledDirectStaticCall@" INTPTR_FORMAT ": set_to_interpreted %s",
173 p2i(instruction_address()),
174 callee->name_and_sig_as_C_string());
175 }
176
177 // Creation also verifies the object.
178 NativeMovConstReg* method_holder = nativeMovConstReg_at(stub + IC_pos_in_java_to_interp_stub);
179 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address());
180
181 #ifdef ASSERT
182 // read the value once
183 volatile intptr_t data = method_holder->data();
184 volatile address destination = jump->jump_destination();
185 assert(data == 0 || data == (intptr_t)callee(),
186 "a) MT-unsafe modification of inline cache");
187 assert(destination == (address)-1 || destination == entry,
188 "b) MT-unsafe modification of inline cache");
189 #endif
190
191 // Update stub.
192 method_holder->set_data((intptr_t)callee());
193 jump->set_jump_destination(entry);
194
195 // Update jump to call.
196 set_destination_mt_safe(stub);
197 }
198
199 void CompiledDirectStaticCall::set_stub_to_clean(static_stub_Relocation* static_stub) {
200 // Reset stub.
201 address stub = static_stub->addr();
202 assert(stub != NULL, "stub not found");
203 assert(CompiledICLocker::is_safe(stub), "mt unsafe call");
204 // Creation also verifies the object.
205 NativeMovConstReg* method_holder = nativeMovConstReg_at(stub + IC_pos_in_java_to_interp_stub);
206 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address());
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162 int CompiledStaticCall::reloc_to_interp_stub() {
163 return 5;
164 }
165
166 void CompiledDirectStaticCall::set_to_interpreted(const methodHandle& callee, address entry) {
167 address stub = find_stub(/*is_aot*/ false);
168 guarantee(stub != NULL, "stub not found");
169
170 if (TraceICs) {
171 ResourceMark rm;
172 tty->print_cr("CompiledDirectStaticCall@" INTPTR_FORMAT ": set_to_interpreted %s",
173 p2i(instruction_address()),
174 callee->name_and_sig_as_C_string());
175 }
176
177 // Creation also verifies the object.
178 NativeMovConstReg* method_holder = nativeMovConstReg_at(stub + IC_pos_in_java_to_interp_stub);
179 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address());
180
181 #ifdef ASSERT
182 // A generated lambda form might be deleted from the Lambdaform
183 // cache in MethodTypeForm. If a jit compiled lambdaform method
184 // becomes not entrant and the cache access returns null, the new
185 // resolve will lead to a new generated LambdaForm.
186 Method* volatile old_method = reinterpret_cast<Method*>(method_holder->data());
187 assert(old_method == NULL || old_method == callee() ||
188 callee->is_compiled_lambda_form() ||
189 !old_method->method_holder()->is_loader_alive() ||
190 old_method->is_old(), // may be race patching deoptimized nmethod due to redefinition.
191 "a) MT-unsafe modification of inline cache");
192
193 volatile address destination = jump->jump_destination();
194 assert(destination == (address)-1 || destination == entry,
195 "b) MT-unsafe modification of inline cache");
196 #endif
197
198 // Update stub.
199 method_holder->set_data((intptr_t)callee());
200 jump->set_jump_destination(entry);
201
202 // Update jump to call.
203 set_destination_mt_safe(stub);
204 }
205
206 void CompiledDirectStaticCall::set_stub_to_clean(static_stub_Relocation* static_stub) {
207 // Reset stub.
208 address stub = static_stub->addr();
209 assert(stub != NULL, "stub not found");
210 assert(CompiledICLocker::is_safe(stub), "mt unsafe call");
211 // Creation also verifies the object.
212 NativeMovConstReg* method_holder = nativeMovConstReg_at(stub + IC_pos_in_java_to_interp_stub);
213 NativeJump* jump = nativeJump_at(method_holder->next_instruction_address());
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