155 typeArrayHandle slots = RegisterSaveLayout::slots(callee_save_info);
156 for (jint i = 0; i < slots->length(); i++) {
157 Handle jvmci_reg = registers->obj_at(i);
158 jint jvmci_reg_number = code_Register::number(jvmci_reg);
159 VMReg hotspot_reg = CodeInstaller::get_hotspot_reg(jvmci_reg_number, CHECK_NULL);
160 // HotSpot stack slots are 4 bytes
161 jint jvmci_slot = slots->int_at(i);
162 jint hotspot_slot = jvmci_slot * VMRegImpl::slots_per_word;
163 VMReg hotspot_slot_as_reg = VMRegImpl::stack2reg(hotspot_slot);
164 map->set_callee_saved(hotspot_slot_as_reg, hotspot_reg);
165 #ifdef _LP64
166 // (copied from generate_oop_map() in c1_Runtime1_x86.cpp)
167 VMReg hotspot_slot_hi_as_reg = VMRegImpl::stack2reg(hotspot_slot + 1);
168 map->set_callee_saved(hotspot_slot_hi_as_reg, hotspot_reg->next());
169 #endif
170 }
171 }
172 return map;
173 }
174
175 void* CodeInstaller::record_metadata_reference(Handle constant, TRAPS) {
176 /*
177 * This method needs to return a raw (untyped) pointer, since the value of a pointer to the base
178 * class is in general not equal to the pointer of the subclass. When patching metaspace pointers,
179 * the compiler expects a direct pointer to the subclass (Klass* or Method*), not a pointer to the
180 * base class (Metadata* or MetaspaceObj*).
181 */
182 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
183 if (obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
184 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
185 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed klass pointer %s @ " INTPTR_FORMAT, klass->name()->as_C_string(), p2i(klass));
186 int index = _oop_recorder->find_index(klass);
187 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
188 return klass;
189 } else if (obj->is_a(HotSpotResolvedJavaMethodImpl::klass())) {
190 Method* method = (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(obj);
191 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed method pointer %s @ " INTPTR_FORMAT, method->name()->as_C_string(), p2i(method));
192 int index = _oop_recorder->find_index(method);
193 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), method->name()->as_C_string());
194 return method;
195 } else {
196 JVMCI_ERROR_NULL("unexpected metadata reference for constant of type %s", obj->klass()->signature_name());
197 }
198 }
199
200 #ifdef _LP64
201 narrowKlass CodeInstaller::record_narrow_metadata_reference(Handle constant, TRAPS) {
202 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
203 assert(HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected uncompressed pointer");
204
205 if (!obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
206 JVMCI_ERROR_0("unexpected compressed pointer of type %s", obj->klass()->signature_name());
207 }
208
209 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
210 int index = _oop_recorder->find_index(klass);
211 TRACE_jvmci_3("narrowKlass[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
212 return Klass::encode_klass(klass);
213 }
214 #endif
215
216 Location::Type CodeInstaller::get_oop_type(Handle value) {
217 Handle valueKind = Value::valueKind(value);
218 Handle platformKind = ValueKind::platformKind(valueKind);
219
220 if (platformKind == word_kind()) {
221 return Location::oop;
222 } else {
223 return Location::narrowoop;
224 }
225 }
226
227 ScopeValue* CodeInstaller::get_scope_value(Handle value, BasicType type, GrowableArray<ScopeValue*>* objects, ScopeValue* &second, TRAPS) {
228 second = NULL;
229 if (value.is_null()) {
230 THROW_NULL(vmSymbols::java_lang_NullPointerException());
684 for (int i = 0; i < data_section_patches()->length(); i++) {
685 Handle patch = data_section_patches()->obj_at(i);
686 if (patch.is_null()) {
687 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
688 }
689 Handle reference = site_DataPatch::reference(patch);
690 if (reference.is_null()) {
691 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
692 }
693 if (!reference->is_a(site_ConstantReference::klass())) {
694 JVMCI_ERROR_OK("invalid patch in data section: %s", reference->klass()->signature_name());
695 }
696 Handle constant = site_ConstantReference::constant(reference);
697 if (constant.is_null()) {
698 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
699 }
700 address dest = _constants->start() + site_Site::pcOffset(patch);
701 if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) {
702 if (HotSpotMetaspaceConstantImpl::compressed(constant)) {
703 #ifdef _LP64
704 *((narrowKlass*) dest) = record_narrow_metadata_reference(constant, CHECK_OK);
705 #else
706 JVMCI_ERROR_OK("unexpected compressed Klass* in 32-bit mode");
707 #endif
708 } else {
709 *((void**) dest) = record_metadata_reference(constant, CHECK_OK);
710 }
711 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) {
712 Handle obj = HotSpotObjectConstantImpl::object(constant);
713 jobject value = JNIHandles::make_local(obj());
714 int oop_index = _oop_recorder->find_index(value);
715
716 if (HotSpotObjectConstantImpl::compressed(constant)) {
717 #ifdef _LP64
718 _constants->relocate(dest, oop_Relocation::spec(oop_index), relocInfo::narrow_oop_in_const);
719 #else
720 JVMCI_ERROR_OK("unexpected compressed oop in 32-bit mode");
721 #endif
722 } else {
723 _constants->relocate(dest, oop_Relocation::spec(oop_index));
724 }
725 } else {
726 JVMCI_ERROR_OK("invalid constant in data section: %s", constant->klass()->signature_name());
727 }
728 }
729 jint last_pc_offset = -1;
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155 typeArrayHandle slots = RegisterSaveLayout::slots(callee_save_info);
156 for (jint i = 0; i < slots->length(); i++) {
157 Handle jvmci_reg = registers->obj_at(i);
158 jint jvmci_reg_number = code_Register::number(jvmci_reg);
159 VMReg hotspot_reg = CodeInstaller::get_hotspot_reg(jvmci_reg_number, CHECK_NULL);
160 // HotSpot stack slots are 4 bytes
161 jint jvmci_slot = slots->int_at(i);
162 jint hotspot_slot = jvmci_slot * VMRegImpl::slots_per_word;
163 VMReg hotspot_slot_as_reg = VMRegImpl::stack2reg(hotspot_slot);
164 map->set_callee_saved(hotspot_slot_as_reg, hotspot_reg);
165 #ifdef _LP64
166 // (copied from generate_oop_map() in c1_Runtime1_x86.cpp)
167 VMReg hotspot_slot_hi_as_reg = VMRegImpl::stack2reg(hotspot_slot + 1);
168 map->set_callee_saved(hotspot_slot_hi_as_reg, hotspot_reg->next());
169 #endif
170 }
171 }
172 return map;
173 }
174
175 void* CodeInstaller::record_metadata_reference(CodeSection* section, address dest, Handle constant, TRAPS) {
176 /*
177 * This method needs to return a raw (untyped) pointer, since the value of a pointer to the base
178 * class is in general not equal to the pointer of the subclass. When patching metaspace pointers,
179 * the compiler expects a direct pointer to the subclass (Klass* or Method*), not a pointer to the
180 * base class (Metadata* or MetaspaceObj*).
181 */
182 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
183 if (obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
184 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
185 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed klass pointer %s @ " INTPTR_FORMAT, klass->name()->as_C_string(), p2i(klass));
186 int index = _oop_recorder->find_index(klass);
187 section->relocate(dest, metadata_Relocation::spec(index));
188 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
189 return klass;
190 } else if (obj->is_a(HotSpotResolvedJavaMethodImpl::klass())) {
191 Method* method = (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(obj);
192 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed method pointer %s @ " INTPTR_FORMAT, method->name()->as_C_string(), p2i(method));
193 int index = _oop_recorder->find_index(method);
194 section->relocate(dest, metadata_Relocation::spec(index));
195 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), method->name()->as_C_string());
196 return method;
197 } else {
198 JVMCI_ERROR_NULL("unexpected metadata reference for constant of type %s", obj->klass()->signature_name());
199 }
200 }
201
202 #ifdef _LP64
203 narrowKlass CodeInstaller::record_narrow_metadata_reference(CodeSection* section, address dest, Handle constant, TRAPS) {
204 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant);
205 assert(HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected uncompressed pointer");
206
207 if (!obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) {
208 JVMCI_ERROR_0("unexpected compressed pointer of type %s", obj->klass()->signature_name());
209 }
210
211 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj));
212 int index = _oop_recorder->find_index(klass);
213 section->relocate(dest, metadata_Relocation::spec(index));
214 TRACE_jvmci_3("narrowKlass[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
215 return Klass::encode_klass(klass);
216 }
217 #endif
218
219 Location::Type CodeInstaller::get_oop_type(Handle value) {
220 Handle valueKind = Value::valueKind(value);
221 Handle platformKind = ValueKind::platformKind(valueKind);
222
223 if (platformKind == word_kind()) {
224 return Location::oop;
225 } else {
226 return Location::narrowoop;
227 }
228 }
229
230 ScopeValue* CodeInstaller::get_scope_value(Handle value, BasicType type, GrowableArray<ScopeValue*>* objects, ScopeValue* &second, TRAPS) {
231 second = NULL;
232 if (value.is_null()) {
233 THROW_NULL(vmSymbols::java_lang_NullPointerException());
687 for (int i = 0; i < data_section_patches()->length(); i++) {
688 Handle patch = data_section_patches()->obj_at(i);
689 if (patch.is_null()) {
690 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
691 }
692 Handle reference = site_DataPatch::reference(patch);
693 if (reference.is_null()) {
694 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
695 }
696 if (!reference->is_a(site_ConstantReference::klass())) {
697 JVMCI_ERROR_OK("invalid patch in data section: %s", reference->klass()->signature_name());
698 }
699 Handle constant = site_ConstantReference::constant(reference);
700 if (constant.is_null()) {
701 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok);
702 }
703 address dest = _constants->start() + site_Site::pcOffset(patch);
704 if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) {
705 if (HotSpotMetaspaceConstantImpl::compressed(constant)) {
706 #ifdef _LP64
707 *((narrowKlass*) dest) = record_narrow_metadata_reference(_constants, dest, constant, CHECK_OK);
708 #else
709 JVMCI_ERROR_OK("unexpected compressed Klass* in 32-bit mode");
710 #endif
711 } else {
712 *((void**) dest) = record_metadata_reference(_constants, dest, constant, CHECK_OK);
713 }
714 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) {
715 Handle obj = HotSpotObjectConstantImpl::object(constant);
716 jobject value = JNIHandles::make_local(obj());
717 int oop_index = _oop_recorder->find_index(value);
718
719 if (HotSpotObjectConstantImpl::compressed(constant)) {
720 #ifdef _LP64
721 _constants->relocate(dest, oop_Relocation::spec(oop_index), relocInfo::narrow_oop_in_const);
722 #else
723 JVMCI_ERROR_OK("unexpected compressed oop in 32-bit mode");
724 #endif
725 } else {
726 _constants->relocate(dest, oop_Relocation::spec(oop_index));
727 }
728 } else {
729 JVMCI_ERROR_OK("invalid constant in data section: %s", constant->klass()->signature_name());
730 }
731 }
732 jint last_pc_offset = -1;
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