164 VMReg hotspot_reg = CodeInstaller::get_hotspot_reg(jvmci_reg_number, CHECK_NULL);
165 // HotSpot stack slots are 4 bytes
166 jint jvmci_slot = slots->int_at(i);
167 jint hotspot_slot = jvmci_slot * VMRegImpl::slots_per_word;
168 VMReg hotspot_slot_as_reg = VMRegImpl::stack2reg(hotspot_slot);
169 map->set_callee_saved(hotspot_slot_as_reg, hotspot_reg);
170 #ifdef _LP64
171 // (copied from generate_oop_map() in c1_Runtime1_x86.cpp)
172 VMReg hotspot_slot_hi_as_reg = VMRegImpl::stack2reg(hotspot_slot + 1);
173 map->set_callee_saved(hotspot_slot_hi_as_reg, hotspot_reg->next());
174 #endif
175 }
176 }
177 return map;
178 }
179
180 void* CodeInstaller::record_metadata_reference(Handle constant, TRAPS) {
181 /*
182 * This method needs to return a raw (untyped) pointer, since the value of a pointer to the base
183 * class is in general not equal to the pointer of the subclass. When patching metaspace pointers,
184 * the compiler expects a direct pointer to the subclass (Klass*, Method* or Symbol*), not a
185 * pointer to the base class (Metadata* or MetaspaceObj*).
186 */
187 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
188 if (obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
189 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
190 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed klass pointer %s @ " INTPTR_FORMAT, klass->name()->as_C_string(), p2i(klass));
191 int index = _oop_recorder->find_index(klass);
192 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
193 return klass;
194 } else if (obj->is_a(HotSpotResolvedJavaMethodImpl::klass())) {
195 Method* method = (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(obj);
196 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed method pointer %s @ " INTPTR_FORMAT, method->name()->as_C_string(), p2i(method));
197 int index = _oop_recorder->find_index(method);
198 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), method->name()->as_C_string());
199 return method;
200 } else if (obj->is_a(HotSpotSymbol::klass())) {
201 Symbol* symbol = (Symbol*) (address) HotSpotSymbol::pointer(obj);
202 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed symbol pointer %s @ " INTPTR_FORMAT, symbol->as_C_string(), p2i(symbol));
203 TRACE_jvmci_3("symbol = %s", symbol->as_C_string());
204 return symbol;
205 } else {
206 JVMCI_ERROR_NULL("unexpected metadata reference for constant of type %s", obj->klass()->signature_name());
207 }
208 }
209
210 #ifdef _LP64
211 narrowKlass CodeInstaller::record_narrow_metadata_reference(Handle constant, TRAPS) {
212 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
213 assert(HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected uncompressed pointer");
214
215 if (!obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
216 JVMCI_ERROR_0("unexpected compressed pointer of type %s", obj->klass()->signature_name());
217 }
218
219 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
220 int index = _oop_recorder->find_index(klass);
221 TRACE_jvmci_3("narrowKlass[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
222 return Klass::encode_klass(klass);
223 }
224 #endif
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164 VMReg hotspot_reg = CodeInstaller::get_hotspot_reg(jvmci_reg_number, CHECK_NULL);
165 // HotSpot stack slots are 4 bytes
166 jint jvmci_slot = slots->int_at(i);
167 jint hotspot_slot = jvmci_slot * VMRegImpl::slots_per_word;
168 VMReg hotspot_slot_as_reg = VMRegImpl::stack2reg(hotspot_slot);
169 map->set_callee_saved(hotspot_slot_as_reg, hotspot_reg);
170 #ifdef _LP64
171 // (copied from generate_oop_map() in c1_Runtime1_x86.cpp)
172 VMReg hotspot_slot_hi_as_reg = VMRegImpl::stack2reg(hotspot_slot + 1);
173 map->set_callee_saved(hotspot_slot_hi_as_reg, hotspot_reg->next());
174 #endif
175 }
176 }
177 return map;
178 }
179
180 void* CodeInstaller::record_metadata_reference(Handle constant, TRAPS) {
181 /*
182 * This method needs to return a raw (untyped) pointer, since the value of a pointer to the base
183 * class is in general not equal to the pointer of the subclass. When patching metaspace pointers,
184 * the compiler expects a direct pointer to the subclass (Klass* or Method*), not a pointer to the
185 * base class (Metadata* or MetaspaceObj*).
186 */
187 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
188 if (obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
189 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
190 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed klass pointer %s @ " INTPTR_FORMAT, klass->name()->as_C_string(), p2i(klass));
191 int index = _oop_recorder->find_index(klass);
192 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
193 return klass;
194 } else if (obj->is_a(HotSpotResolvedJavaMethodImpl::klass())) {
195 Method* method = (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(obj);
196 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed method pointer %s @ " INTPTR_FORMAT, method->name()->as_C_string(), p2i(method));
197 int index = _oop_recorder->find_index(method);
198 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), method->name()->as_C_string());
199 return method;
200 } else {
201 JVMCI_ERROR_NULL("unexpected metadata reference for constant of type %s", obj->klass()->signature_name());
202 }
203 }
204
205 #ifdef _LP64
206 narrowKlass CodeInstaller::record_narrow_metadata_reference(Handle constant, TRAPS) {
207 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
208 assert(HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected uncompressed pointer");
209
210 if (!obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
211 JVMCI_ERROR_0("unexpected compressed pointer of type %s", obj->klass()->signature_name());
212 }
213
214 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
215 int index = _oop_recorder->find_index(klass);
216 TRACE_jvmci_3("narrowKlass[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
217 return Klass::encode_klass(klass);
218 }
219 #endif
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