| /* |
| * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #include "precompiled.hpp" |
| #include "asm/register.hpp" |
| #include "classfile/vmSymbols.hpp" |
| #include "code/compiledIC.hpp" |
| #include "code/vmreg.inline.hpp" |
| #include "compiler/compileBroker.hpp" |
| #include "compiler/disassembler.hpp" |
| #include "jvmci/jvmciEnv.hpp" |
| #include "jvmci/jvmciCompiler.hpp" |
| #include "jvmci/jvmciCodeInstaller.hpp" |
| #include "jvmci/jvmciJavaClasses.hpp" |
| #include "jvmci/jvmciCompilerToVM.hpp" |
| #include "jvmci/jvmciRuntime.hpp" |
| #include "memory/allocation.inline.hpp" |
| #include "oops/arrayOop.inline.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "oops/objArrayOop.inline.hpp" |
| #include "oops/typeArrayOop.inline.hpp" |
| #include "runtime/interfaceSupport.inline.hpp" |
| #include "runtime/javaCalls.hpp" |
| #include "runtime/jniHandles.inline.hpp" |
| #include "runtime/safepointMechanism.inline.hpp" |
| #include "runtime/sharedRuntime.hpp" |
| #include "utilities/align.hpp" |
| |
| // frequently used constants |
| // Allocate them with new so they are never destroyed (otherwise, a |
| // forced exit could destroy these objects while they are still in |
| // use). |
| ConstantOopWriteValue* CodeInstaller::_oop_null_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantOopWriteValue(NULL); |
| ConstantIntValue* CodeInstaller::_int_m1_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(-1); |
| ConstantIntValue* CodeInstaller::_int_0_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue((jint)0); |
| ConstantIntValue* CodeInstaller::_int_1_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(1); |
| ConstantIntValue* CodeInstaller::_int_2_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(2); |
| LocationValue* CodeInstaller::_illegal_value = new (ResourceObj::C_HEAP, mtCompiler) LocationValue(Location()); |
| |
| Method* getMethodFromHotSpotMethod(oop hotspot_method) { |
| assert(hotspot_method != NULL && hotspot_method->is_a(HotSpotResolvedJavaMethodImpl::klass()), "sanity"); |
| return CompilerToVM::asMethod(hotspot_method); |
| } |
| |
| VMReg getVMRegFromLocation(Handle location, int total_frame_size, TRAPS) { |
| if (location.is_null()) { |
| THROW_NULL(vmSymbols::java_lang_NullPointerException()); |
| } |
| |
| Handle reg(THREAD, code_Location::reg(location)); |
| jint offset = code_Location::offset(location); |
| |
| if (reg.not_null()) { |
| // register |
| jint number = code_Register::number(reg); |
| VMReg vmReg = CodeInstaller::get_hotspot_reg(number, CHECK_NULL); |
| if (offset % 4 == 0) { |
| return vmReg->next(offset / 4); |
| } else { |
| JVMCI_ERROR_NULL("unaligned subregister offset %d in oop map", offset); |
| } |
| } else { |
| // stack slot |
| if (offset % 4 == 0) { |
| VMReg vmReg = VMRegImpl::stack2reg(offset / 4); |
| if (!OopMapValue::legal_vm_reg_name(vmReg)) { |
| // This restriction only applies to VMRegs that are used in OopMap but |
| // since that's the only use of VMRegs it's simplest to put this test |
| // here. This test should also be equivalent legal_vm_reg_name but JVMCI |
| // clients can use max_oop_map_stack_stack_offset to detect this problem |
| // directly. The asserts just ensure that the tests are in agreement. |
| assert(offset > CompilerToVM::Data::max_oop_map_stack_offset(), "illegal VMReg"); |
| JVMCI_ERROR_NULL("stack offset %d is too large to be encoded in OopMap (max %d)", |
| offset, CompilerToVM::Data::max_oop_map_stack_offset()); |
| } |
| assert(OopMapValue::legal_vm_reg_name(vmReg), "illegal VMReg"); |
| return vmReg; |
| } else { |
| JVMCI_ERROR_NULL("unaligned stack offset %d in oop map", offset); |
| } |
| } |
| } |
| |
| objArrayOop CodeInstaller::sites() { |
| return (objArrayOop) JNIHandles::resolve(_sites_handle); |
| } |
| |
| arrayOop CodeInstaller::code() { |
| return (arrayOop) JNIHandles::resolve(_code_handle); |
| } |
| |
| arrayOop CodeInstaller::data_section() { |
| return (arrayOop) JNIHandles::resolve(_data_section_handle); |
| } |
| |
| objArrayOop CodeInstaller::data_section_patches() { |
| return (objArrayOop) JNIHandles::resolve(_data_section_patches_handle); |
| } |
| |
| #ifndef PRODUCT |
| objArrayOop CodeInstaller::comments() { |
| return (objArrayOop) JNIHandles::resolve(_comments_handle); |
| } |
| #endif |
| |
| oop CodeInstaller::word_kind() { |
| return JNIHandles::resolve(_word_kind_handle); |
| } |
| |
| // creates a HotSpot oop map out of the byte arrays provided by DebugInfo |
| OopMap* CodeInstaller::create_oop_map(Handle debug_info, TRAPS) { |
| Handle reference_map(THREAD, DebugInfo::referenceMap(debug_info)); |
| if (reference_map.is_null()) { |
| THROW_NULL(vmSymbols::java_lang_NullPointerException()); |
| } |
| if (!reference_map->is_a(HotSpotReferenceMap::klass())) { |
| JVMCI_ERROR_NULL("unknown reference map: %s", reference_map->klass()->signature_name()); |
| } |
| if (!_has_wide_vector && SharedRuntime::is_wide_vector(HotSpotReferenceMap::maxRegisterSize(reference_map))) { |
| if (SharedRuntime::polling_page_vectors_safepoint_handler_blob() == NULL) { |
| JVMCI_ERROR_NULL("JVMCI is producing code using vectors larger than the runtime supports"); |
| } |
| _has_wide_vector = true; |
| } |
| OopMap* map = new OopMap(_total_frame_size, _parameter_count); |
| objArrayHandle objects(THREAD, HotSpotReferenceMap::objects(reference_map)); |
| objArrayHandle derivedBase(THREAD, HotSpotReferenceMap::derivedBase(reference_map)); |
| typeArrayHandle sizeInBytes(THREAD, HotSpotReferenceMap::sizeInBytes(reference_map)); |
| if (objects.is_null() || derivedBase.is_null() || sizeInBytes.is_null()) { |
| THROW_NULL(vmSymbols::java_lang_NullPointerException()); |
| } |
| if (objects->length() != derivedBase->length() || objects->length() != sizeInBytes->length()) { |
| JVMCI_ERROR_NULL("arrays in reference map have different sizes: %d %d %d", objects->length(), derivedBase->length(), sizeInBytes->length()); |
| } |
| for (int i = 0; i < objects->length(); i++) { |
| Handle location(THREAD, objects->obj_at(i)); |
| Handle baseLocation(THREAD, derivedBase->obj_at(i)); |
| int bytes = sizeInBytes->int_at(i); |
| |
| VMReg vmReg = getVMRegFromLocation(location, _total_frame_size, CHECK_NULL); |
| if (baseLocation.not_null()) { |
| // derived oop |
| #ifdef _LP64 |
| if (bytes == 8) { |
| #else |
| if (bytes == 4) { |
| #endif |
| VMReg baseReg = getVMRegFromLocation(baseLocation, _total_frame_size, CHECK_NULL); |
| map->set_derived_oop(vmReg, baseReg); |
| } else { |
| JVMCI_ERROR_NULL("invalid derived oop size in ReferenceMap: %d", bytes); |
| } |
| #ifdef _LP64 |
| } else if (bytes == 8) { |
| // wide oop |
| map->set_oop(vmReg); |
| } else if (bytes == 4) { |
| // narrow oop |
| map->set_narrowoop(vmReg); |
| #else |
| } else if (bytes == 4) { |
| map->set_oop(vmReg); |
| #endif |
| } else { |
| JVMCI_ERROR_NULL("invalid oop size in ReferenceMap: %d", bytes); |
| } |
| } |
| |
| Handle callee_save_info(THREAD, (oop) DebugInfo::calleeSaveInfo(debug_info)); |
| if (callee_save_info.not_null()) { |
| objArrayHandle registers(THREAD, RegisterSaveLayout::registers(callee_save_info)); |
| typeArrayHandle slots(THREAD, RegisterSaveLayout::slots(callee_save_info)); |
| for (jint i = 0; i < slots->length(); i++) { |
| Handle jvmci_reg (THREAD, registers->obj_at(i)); |
| jint jvmci_reg_number = code_Register::number(jvmci_reg); |
| VMReg hotspot_reg = CodeInstaller::get_hotspot_reg(jvmci_reg_number, CHECK_NULL); |
| // HotSpot stack slots are 4 bytes |
| jint jvmci_slot = slots->int_at(i); |
| jint hotspot_slot = jvmci_slot * VMRegImpl::slots_per_word; |
| VMReg hotspot_slot_as_reg = VMRegImpl::stack2reg(hotspot_slot); |
| map->set_callee_saved(hotspot_slot_as_reg, hotspot_reg); |
| #ifdef _LP64 |
| // (copied from generate_oop_map() in c1_Runtime1_x86.cpp) |
| VMReg hotspot_slot_hi_as_reg = VMRegImpl::stack2reg(hotspot_slot + 1); |
| map->set_callee_saved(hotspot_slot_hi_as_reg, hotspot_reg->next()); |
| #endif |
| } |
| } |
| return map; |
| } |
| |
| AOTOopRecorder::AOTOopRecorder(Arena* arena, bool deduplicate) : OopRecorder(arena, deduplicate) { |
| _meta_refs = new GrowableArray<jobject>(); |
| } |
| |
| int AOTOopRecorder::nr_meta_refs() const { |
| return _meta_refs->length(); |
| } |
| |
| jobject AOTOopRecorder::meta_element(int pos) const { |
| return _meta_refs->at(pos); |
| } |
| |
| int AOTOopRecorder::find_index(Metadata* h) { |
| JavaThread* THREAD = JavaThread::current(); |
| int oldCount = metadata_count(); |
| int index = this->OopRecorder::find_index(h); |
| int newCount = metadata_count(); |
| |
| if (oldCount == newCount) { |
| // found a match |
| return index; |
| } |
| |
| vmassert(index + 1 == newCount, "must be last"); |
| |
| JVMCIKlassHandle klass(THREAD); |
| oop result = NULL; |
| guarantee(h != NULL, |
| "If DebugInformationRecorder::describe_scope passes NULL oldCount == newCount must hold."); |
| if (h->is_klass()) { |
| klass = (Klass*) h; |
| result = CompilerToVM::get_jvmci_type(klass, CATCH); |
| } else if (h->is_method()) { |
| Method* method = (Method*) h; |
| methodHandle mh(method); |
| result = CompilerToVM::get_jvmci_method(method, CATCH); |
| } |
| jobject ref = JNIHandles::make_local(THREAD, result); |
| record_meta_ref(ref, index); |
| |
| return index; |
| } |
| |
| int AOTOopRecorder::find_index(jobject h) { |
| if (h == NULL) { |
| return 0; |
| } |
| oop javaMirror = JNIHandles::resolve(h); |
| Klass* klass = java_lang_Class::as_Klass(javaMirror); |
| return find_index(klass); |
| } |
| |
| void AOTOopRecorder::record_meta_ref(jobject o, int index) { |
| assert(index > 0, "must be 1..n"); |
| index -= 1; // reduce by one to convert to array index |
| |
| assert(index == _meta_refs->length(), "must be last"); |
| _meta_refs->append(o); |
| } |
| |
| void* CodeInstaller::record_metadata_reference(CodeSection* section, address dest, Handle constant, TRAPS) { |
| /* |
| * This method needs to return a raw (untyped) pointer, since the value of a pointer to the base |
| * class is in general not equal to the pointer of the subclass. When patching metaspace pointers, |
| * the compiler expects a direct pointer to the subclass (Klass* or Method*), not a pointer to the |
| * base class (Metadata* or MetaspaceObj*). |
| */ |
| oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant); |
| if (obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) { |
| Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj)); |
| assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed klass pointer %s @ " INTPTR_FORMAT, klass->name()->as_C_string(), p2i(klass)); |
| int index = _oop_recorder->find_index(klass); |
| section->relocate(dest, metadata_Relocation::spec(index)); |
| TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string()); |
| return klass; |
| } else if (obj->is_a(HotSpotResolvedJavaMethodImpl::klass())) { |
| Method* method = (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(obj); |
| assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed method pointer %s @ " INTPTR_FORMAT, method->name()->as_C_string(), p2i(method)); |
| int index = _oop_recorder->find_index(method); |
| section->relocate(dest, metadata_Relocation::spec(index)); |
| TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), method->name()->as_C_string()); |
| return method; |
| } else { |
| JVMCI_ERROR_NULL("unexpected metadata reference for constant of type %s", obj->klass()->signature_name()); |
| } |
| } |
| |
| #ifdef _LP64 |
| narrowKlass CodeInstaller::record_narrow_metadata_reference(CodeSection* section, address dest, Handle constant, TRAPS) { |
| oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant); |
| assert(HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected uncompressed pointer"); |
| |
| if (!obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) { |
| JVMCI_ERROR_0("unexpected compressed pointer of type %s", obj->klass()->signature_name()); |
| } |
| |
| Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj)); |
| int index = _oop_recorder->find_index(klass); |
| section->relocate(dest, metadata_Relocation::spec(index)); |
| TRACE_jvmci_3("narrowKlass[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string()); |
| return Klass::encode_klass(klass); |
| } |
| #endif |
| |
| Location::Type CodeInstaller::get_oop_type(Thread* thread, Handle value) { |
| Handle valueKind(thread, Value::valueKind(value)); |
| Handle platformKind(thread, ValueKind::platformKind(valueKind)); |
| |
| if (platformKind == word_kind()) { |
| return Location::oop; |
| } else { |
| return Location::narrowoop; |
| } |
| } |
| |
| ScopeValue* CodeInstaller::get_scope_value(Handle value, BasicType type, GrowableArray<ScopeValue*>* objects, ScopeValue* &second, TRAPS) { |
| second = NULL; |
| if (value.is_null()) { |
| THROW_NULL(vmSymbols::java_lang_NullPointerException()); |
| } else if (value == Value::ILLEGAL()) { |
| if (type != T_ILLEGAL) { |
| JVMCI_ERROR_NULL("unexpected illegal value, expected %s", basictype_to_str(type)); |
| } |
| return _illegal_value; |
| } else if (value->is_a(RegisterValue::klass())) { |
| Handle reg(THREAD, RegisterValue::reg(value)); |
| jint number = code_Register::number(reg); |
| VMReg hotspotRegister = get_hotspot_reg(number, CHECK_NULL); |
| if (is_general_purpose_reg(hotspotRegister)) { |
| Location::Type locationType; |
| if (type == T_OBJECT) { |
| locationType = get_oop_type(THREAD, value); |
| } else if (type == T_LONG) { |
| locationType = Location::lng; |
| } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) { |
| locationType = Location::int_in_long; |
| } else { |
| JVMCI_ERROR_NULL("unexpected type %s in cpu register", basictype_to_str(type)); |
| } |
| ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister)); |
| if (type == T_LONG) { |
| second = value; |
| } |
| return value; |
| } else { |
| Location::Type locationType; |
| if (type == T_FLOAT) { |
| // this seems weird, but the same value is used in c1_LinearScan |
| locationType = Location::normal; |
| } else if (type == T_DOUBLE) { |
| locationType = Location::dbl; |
| } else { |
| JVMCI_ERROR_NULL("unexpected type %s in floating point register", basictype_to_str(type)); |
| } |
| ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister)); |
| if (type == T_DOUBLE) { |
| second = value; |
| } |
| return value; |
| } |
| } else if (value->is_a(StackSlot::klass())) { |
| jint offset = StackSlot::offset(value); |
| if (StackSlot::addFrameSize(value)) { |
| offset += _total_frame_size; |
| } |
| |
| Location::Type locationType; |
| if (type == T_OBJECT) { |
| locationType = get_oop_type(THREAD, value); |
| } else if (type == T_LONG) { |
| locationType = Location::lng; |
| } else if (type == T_DOUBLE) { |
| locationType = Location::dbl; |
| } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) { |
| locationType = Location::normal; |
| } else { |
| JVMCI_ERROR_NULL("unexpected type %s in stack slot", basictype_to_str(type)); |
| } |
| ScopeValue* value = new LocationValue(Location::new_stk_loc(locationType, offset)); |
| if (type == T_DOUBLE || type == T_LONG) { |
| second = value; |
| } |
| return value; |
| } else if (value->is_a(JavaConstant::klass())) { |
| if (value->is_a(PrimitiveConstant::klass())) { |
| if (value->is_a(RawConstant::klass())) { |
| jlong prim = PrimitiveConstant::primitive(value); |
| return new ConstantLongValue(prim); |
| } else { |
| Handle primitive_constant_kind(THREAD, PrimitiveConstant::kind(value)); |
| BasicType constantType = JVMCIRuntime::kindToBasicType(primitive_constant_kind, CHECK_NULL); |
| if (type != constantType) { |
| JVMCI_ERROR_NULL("primitive constant type doesn't match, expected %s but got %s", basictype_to_str(type), basictype_to_str(constantType)); |
| } |
| if (type == T_INT || type == T_FLOAT) { |
| jint prim = (jint)PrimitiveConstant::primitive(value); |
| switch (prim) { |
| case -1: return _int_m1_scope_value; |
| case 0: return _int_0_scope_value; |
| case 1: return _int_1_scope_value; |
| case 2: return _int_2_scope_value; |
| default: return new ConstantIntValue(prim); |
| } |
| } else if (type == T_LONG || type == T_DOUBLE) { |
| jlong prim = PrimitiveConstant::primitive(value); |
| second = _int_1_scope_value; |
| return new ConstantLongValue(prim); |
| } else { |
| JVMCI_ERROR_NULL("unexpected primitive constant type %s", basictype_to_str(type)); |
| } |
| } |
| } else if (value->is_a(NullConstant::klass()) || value->is_a(HotSpotCompressedNullConstant::klass())) { |
| if (type == T_OBJECT) { |
| return _oop_null_scope_value; |
| } else { |
| JVMCI_ERROR_NULL("unexpected null constant, expected %s", basictype_to_str(type)); |
| } |
| } else if (value->is_a(HotSpotObjectConstantImpl::klass())) { |
| if (type == T_OBJECT) { |
| oop obj = HotSpotObjectConstantImpl::object(value); |
| if (obj == NULL) { |
| JVMCI_ERROR_NULL("null value must be in NullConstant"); |
| } |
| return new ConstantOopWriteValue(JNIHandles::make_local(obj)); |
| } else { |
| JVMCI_ERROR_NULL("unexpected object constant, expected %s", basictype_to_str(type)); |
| } |
| } |
| } else if (value->is_a(VirtualObject::klass())) { |
| if (type == T_OBJECT) { |
| int id = VirtualObject::id(value); |
| if (0 <= id && id < objects->length()) { |
| ScopeValue* object = objects->at(id); |
| if (object != NULL) { |
| return object; |
| } |
| } |
| JVMCI_ERROR_NULL("unknown virtual object id %d", id); |
| } else { |
| JVMCI_ERROR_NULL("unexpected virtual object, expected %s", basictype_to_str(type)); |
| } |
| } |
| |
| JVMCI_ERROR_NULL("unexpected value in scope: %s", value->klass()->signature_name()) |
| } |
| |
| void CodeInstaller::record_object_value(ObjectValue* sv, Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) { |
| // Might want a HandleMark here. |
| Handle type(THREAD, VirtualObject::type(value)); |
| int id = VirtualObject::id(value); |
| oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type); |
| Klass* klass = java_lang_Class::as_Klass(javaMirror); |
| bool isLongArray = klass == Universe::longArrayKlassObj(); |
| |
| objArrayHandle values(THREAD, VirtualObject::values(value)); |
| objArrayHandle slotKinds(THREAD, VirtualObject::slotKinds(value)); |
| for (jint i = 0; i < values->length(); i++) { |
| HandleMark hm(THREAD); |
| ScopeValue* cur_second = NULL; |
| Handle object(THREAD, values->obj_at(i)); |
| Handle slot_kind (THREAD, slotKinds->obj_at(i)); |
| BasicType type = JVMCIRuntime::kindToBasicType(slot_kind, CHECK); |
| ScopeValue* value = get_scope_value(object, type, objects, cur_second, CHECK); |
| |
| if (isLongArray && cur_second == NULL) { |
| // we're trying to put ints into a long array... this isn't really valid, but it's used for some optimizations. |
| // add an int 0 constant |
| cur_second = _int_0_scope_value; |
| } |
| |
| if (cur_second != NULL) { |
| sv->field_values()->append(cur_second); |
| } |
| assert(value != NULL, "missing value"); |
| sv->field_values()->append(value); |
| } |
| } |
| |
| MonitorValue* CodeInstaller::get_monitor_value(Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) { |
| if (value.is_null()) { |
| THROW_NULL(vmSymbols::java_lang_NullPointerException()); |
| } |
| if (!value->is_a(StackLockValue::klass())) { |
| JVMCI_ERROR_NULL("Monitors must be of type StackLockValue, got %s", value->klass()->signature_name()); |
| } |
| |
| ScopeValue* second = NULL; |
| Handle stack_lock_owner(THREAD, StackLockValue::owner(value)); |
| ScopeValue* owner_value = get_scope_value(stack_lock_owner, T_OBJECT, objects, second, CHECK_NULL); |
| assert(second == NULL, "monitor cannot occupy two stack slots"); |
| |
| Handle stack_lock_slot(THREAD, StackLockValue::slot(value)); |
| ScopeValue* lock_data_value = get_scope_value(stack_lock_slot, T_LONG, objects, second, CHECK_NULL); |
| assert(second == lock_data_value, "monitor is LONG value that occupies two stack slots"); |
| assert(lock_data_value->is_location(), "invalid monitor location"); |
| Location lock_data_loc = ((LocationValue*)lock_data_value)->location(); |
| |
| bool eliminated = false; |
| if (StackLockValue::eliminated(value)) { |
| eliminated = true; |
| } |
| |
| return new MonitorValue(owner_value, lock_data_loc, eliminated); |
| } |
| |
| void CodeInstaller::initialize_dependencies(oop compiled_code, OopRecorder* recorder, TRAPS) { |
| JavaThread* thread = JavaThread::current(); |
| assert(THREAD == thread, ""); |
| CompilerThread* compilerThread = thread->is_Compiler_thread() ? thread->as_CompilerThread() : NULL; |
| _oop_recorder = recorder; |
| _dependencies = new Dependencies(&_arena, _oop_recorder, compilerThread != NULL ? compilerThread->log() : NULL); |
| objArrayHandle assumptions(THREAD, HotSpotCompiledCode::assumptions(compiled_code)); |
| if (!assumptions.is_null()) { |
| int length = assumptions->length(); |
| for (int i = 0; i < length; ++i) { |
| Handle assumption(THREAD, assumptions->obj_at(i)); |
| if (!assumption.is_null()) { |
| if (assumption->klass() == Assumptions_NoFinalizableSubclass::klass()) { |
| assumption_NoFinalizableSubclass(THREAD, assumption); |
| } else if (assumption->klass() == Assumptions_ConcreteSubtype::klass()) { |
| assumption_ConcreteSubtype(THREAD, assumption); |
| } else if (assumption->klass() == Assumptions_LeafType::klass()) { |
| assumption_LeafType(THREAD, assumption); |
| } else if (assumption->klass() == Assumptions_ConcreteMethod::klass()) { |
| assumption_ConcreteMethod(THREAD, assumption); |
| } else if (assumption->klass() == Assumptions_CallSiteTargetValue::klass()) { |
| assumption_CallSiteTargetValue(THREAD, assumption); |
| } else { |
| JVMCI_ERROR("unexpected Assumption subclass %s", assumption->klass()->signature_name()); |
| } |
| } |
| } |
| } |
| if (JvmtiExport::can_hotswap_or_post_breakpoint()) { |
| objArrayHandle methods(THREAD, HotSpotCompiledCode::methods(compiled_code)); |
| if (!methods.is_null()) { |
| int length = methods->length(); |
| for (int i = 0; i < length; ++i) { |
| Handle method_handle(THREAD, methods->obj_at(i)); |
| methodHandle method = getMethodFromHotSpotMethod(method_handle()); |
| _dependencies->assert_evol_method(method()); |
| } |
| } |
| } |
| } |
| |
| RelocBuffer::~RelocBuffer() { |
| if (_buffer != NULL) { |
| FREE_C_HEAP_ARRAY(char, _buffer); |
| } |
| } |
| |
| address RelocBuffer::begin() const { |
| if (_buffer != NULL) { |
| return (address) _buffer; |
| } |
| return (address) _static_buffer; |
| } |
| |
| void RelocBuffer::set_size(size_t bytes) { |
| assert(bytes <= _size, "can't grow in size!"); |
| _size = bytes; |
| } |
| |
| void RelocBuffer::ensure_size(size_t bytes) { |
| assert(_buffer == NULL, "can only be used once"); |
| assert(_size == 0, "can only be used once"); |
| if (bytes >= RelocBuffer::stack_size) { |
| _buffer = NEW_C_HEAP_ARRAY(char, bytes, mtInternal); |
| } |
| _size = bytes; |
| } |
| |
| JVMCIEnv::CodeInstallResult CodeInstaller::gather_metadata(Handle target, Handle compiled_code, CodeMetadata& metadata, TRAPS) { |
| CodeBuffer buffer("JVMCI Compiler CodeBuffer for Metadata"); |
| jobject compiled_code_obj = JNIHandles::make_local(compiled_code()); |
| AOTOopRecorder* recorder = new AOTOopRecorder(&_arena, true); |
| initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK); |
| |
| metadata.set_oop_recorder(recorder); |
| |
| // Get instructions and constants CodeSections early because we need it. |
| _instructions = buffer.insts(); |
| _constants = buffer.consts(); |
| #if INCLUDE_AOT |
| buffer.set_immutable_PIC(_immutable_pic_compilation); |
| #endif |
| |
| initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK); |
| JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, false, CHECK_OK); |
| if (result != JVMCIEnv::ok) { |
| return result; |
| } |
| |
| _debug_recorder->pcs_size(); // create the sentinel record |
| |
| assert(_debug_recorder->pcs_length() >= 2, "must be at least 2"); |
| |
| metadata.set_pc_desc(_debug_recorder->pcs(), _debug_recorder->pcs_length()); |
| metadata.set_scopes(_debug_recorder->stream()->buffer(), _debug_recorder->data_size()); |
| metadata.set_exception_table(&_exception_handler_table); |
| |
| RelocBuffer* reloc_buffer = metadata.get_reloc_buffer(); |
| |
| reloc_buffer->ensure_size(buffer.total_relocation_size()); |
| size_t size = (size_t) buffer.copy_relocations_to(reloc_buffer->begin(), (CodeBuffer::csize_t) reloc_buffer->size(), true); |
| reloc_buffer->set_size(size); |
| return JVMCIEnv::ok; |
| } |
| |
| // constructor used to create a method |
| JVMCIEnv::CodeInstallResult CodeInstaller::install(JVMCICompiler* compiler, Handle target, Handle compiled_code, CodeBlob*& cb, Handle installed_code, Handle speculation_log, TRAPS) { |
| CodeBuffer buffer("JVMCI Compiler CodeBuffer"); |
| jobject compiled_code_obj = JNIHandles::make_local(compiled_code()); |
| OopRecorder* recorder = new OopRecorder(&_arena, true); |
| initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK); |
| |
| // Get instructions and constants CodeSections early because we need it. |
| _instructions = buffer.insts(); |
| _constants = buffer.consts(); |
| #if INCLUDE_AOT |
| buffer.set_immutable_PIC(_immutable_pic_compilation); |
| #endif |
| |
| initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK); |
| JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, true, CHECK_OK); |
| if (result != JVMCIEnv::ok) { |
| return result; |
| } |
| |
| int stack_slots = _total_frame_size / HeapWordSize; // conversion to words |
| |
| if (!compiled_code->is_a(HotSpotCompiledNmethod::klass())) { |
| oop stubName = HotSpotCompiledCode::name(compiled_code_obj); |
| if (stubName == NULL) { |
| JVMCI_ERROR_OK("stub should have a name"); |
| } |
| char* name = strdup(java_lang_String::as_utf8_string(stubName)); |
| cb = RuntimeStub::new_runtime_stub(name, |
| &buffer, |
| _offsets.value(CodeOffsets::Frame_Complete), |
| stack_slots, |
| _debug_recorder->_oopmaps, |
| false); |
| result = JVMCIEnv::ok; |
| } else { |
| nmethod* nm = NULL; |
| methodHandle method = getMethodFromHotSpotMethod(HotSpotCompiledNmethod::method(compiled_code)); |
| jint entry_bci = HotSpotCompiledNmethod::entryBCI(compiled_code); |
| jint id = HotSpotCompiledNmethod::id(compiled_code); |
| bool has_unsafe_access = HotSpotCompiledNmethod::hasUnsafeAccess(compiled_code) == JNI_TRUE; |
| JVMCIEnv* env = (JVMCIEnv*) (address) HotSpotCompiledNmethod::jvmciEnv(compiled_code); |
| if (id == -1) { |
| // Make sure a valid compile_id is associated with every compile |
| id = CompileBroker::assign_compile_id_unlocked(Thread::current(), method, entry_bci); |
| } |
| result = JVMCIEnv::register_method(method, nm, entry_bci, &_offsets, _orig_pc_offset, &buffer, |
| stack_slots, _debug_recorder->_oopmaps, &_exception_handler_table, |
| compiler, _debug_recorder, _dependencies, env, id, |
| has_unsafe_access, _has_wide_vector, installed_code, compiled_code, speculation_log); |
| cb = nm->as_codeblob_or_null(); |
| if (nm != NULL && env == NULL) { |
| DirectiveSet* directive = DirectivesStack::getMatchingDirective(method, compiler); |
| bool printnmethods = directive->PrintAssemblyOption || directive->PrintNMethodsOption; |
| if (!printnmethods && (PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers)) { |
| nm->print_nmethod(printnmethods); |
| } |
| DirectivesStack::release(directive); |
| } |
| } |
| |
| if (cb != NULL) { |
| // Make sure the pre-calculated constants section size was correct. |
| guarantee((cb->code_begin() - cb->content_begin()) >= _constants_size, "%d < %d", (int)(cb->code_begin() - cb->content_begin()), _constants_size); |
| } |
| return result; |
| } |
| |
| void CodeInstaller::initialize_fields(oop target, oop compiled_code, TRAPS) { |
| if (compiled_code->is_a(HotSpotCompiledNmethod::klass())) { |
| Handle hotspotJavaMethod(THREAD, HotSpotCompiledNmethod::method(compiled_code)); |
| methodHandle method = getMethodFromHotSpotMethod(hotspotJavaMethod()); |
| _parameter_count = method->size_of_parameters(); |
| TRACE_jvmci_2("installing code for %s", method->name_and_sig_as_C_string()); |
| } else { |
| // Must be a HotSpotCompiledRuntimeStub. |
| // Only used in OopMap constructor for non-product builds |
| _parameter_count = 0; |
| } |
| _sites_handle = JNIHandles::make_local(HotSpotCompiledCode::sites(compiled_code)); |
| |
| _code_handle = JNIHandles::make_local(HotSpotCompiledCode::targetCode(compiled_code)); |
| _code_size = HotSpotCompiledCode::targetCodeSize(compiled_code); |
| _total_frame_size = HotSpotCompiledCode::totalFrameSize(compiled_code); |
| |
| oop deoptRescueSlot = HotSpotCompiledCode::deoptRescueSlot(compiled_code); |
| if (deoptRescueSlot == NULL) { |
| _orig_pc_offset = -1; |
| } else { |
| _orig_pc_offset = StackSlot::offset(deoptRescueSlot); |
| if (StackSlot::addFrameSize(deoptRescueSlot)) { |
| _orig_pc_offset += _total_frame_size; |
| } |
| if (_orig_pc_offset < 0) { |
| JVMCI_ERROR("invalid deopt rescue slot: %d", _orig_pc_offset); |
| } |
| } |
| |
| // Pre-calculate the constants section size. This is required for PC-relative addressing. |
| _data_section_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSection(compiled_code)); |
| if ((_constants->alignment() % HotSpotCompiledCode::dataSectionAlignment(compiled_code)) != 0) { |
| JVMCI_ERROR("invalid data section alignment: %d", HotSpotCompiledCode::dataSectionAlignment(compiled_code)); |
| } |
| _constants_size = data_section()->length(); |
| |
| _data_section_patches_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSectionPatches(compiled_code)); |
| |
| #ifndef PRODUCT |
| _comments_handle = JNIHandles::make_local(HotSpotCompiledCode::comments(compiled_code)); |
| #endif |
| |
| _next_call_type = INVOKE_INVALID; |
| |
| _has_wide_vector = false; |
| |
| oop arch = TargetDescription::arch(target); |
| _word_kind_handle = JNIHandles::make_local(Architecture::wordKind(arch)); |
| } |
| |
| int CodeInstaller::estimate_stubs_size(TRAPS) { |
| // Estimate the number of static and aot call stubs that might be emitted. |
| int static_call_stubs = 0; |
| int aot_call_stubs = 0; |
| int trampoline_stubs = 0; |
| objArrayOop sites = this->sites(); |
| for (int i = 0; i < sites->length(); i++) { |
| oop site = sites->obj_at(i); |
| if (site != NULL) { |
| if (site->is_a(site_Mark::klass())) { |
| oop id_obj = site_Mark::id(site); |
| if (id_obj != NULL) { |
| if (!java_lang_boxing_object::is_instance(id_obj, T_INT)) { |
| JVMCI_ERROR_0("expected Integer id, got %s", id_obj->klass()->signature_name()); |
| } |
| jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT)); |
| switch (id) { |
| case INVOKEINTERFACE: |
| case INVOKEVIRTUAL: |
| trampoline_stubs++; |
| break; |
| case INVOKESTATIC: |
| case INVOKESPECIAL: |
| static_call_stubs++; |
| trampoline_stubs++; |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| if (UseAOT && site->is_a(site_Call::klass())) { |
| oop target = site_Call::target(site); |
| InstanceKlass* target_klass = InstanceKlass::cast(target->klass()); |
| if (!target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) { |
| // Add far aot trampolines. |
| aot_call_stubs++; |
| } |
| } |
| } |
| } |
| int size = static_call_stubs * CompiledStaticCall::to_interp_stub_size(); |
| size += trampoline_stubs * CompiledStaticCall::to_trampoline_stub_size(); |
| #if INCLUDE_AOT |
| size += aot_call_stubs * CompiledStaticCall::to_aot_stub_size(); |
| #endif |
| return size; |
| } |
| |
| // perform data and call relocation on the CodeBuffer |
| JVMCIEnv::CodeInstallResult CodeInstaller::initialize_buffer(CodeBuffer& buffer, bool check_size, TRAPS) { |
| HandleMark hm; |
| objArrayHandle sites(THREAD, this->sites()); |
| int locs_buffer_size = sites->length() * (relocInfo::length_limit + sizeof(relocInfo)); |
| |
| // Allocate enough space in the stub section for the static call |
| // stubs. Stubs have extra relocs but they are managed by the stub |
| // section itself so they don't need to be accounted for in the |
| // locs_buffer above. |
| int stubs_size = estimate_stubs_size(CHECK_OK); |
| int total_size = align_up(_code_size, buffer.insts()->alignment()) + align_up(_constants_size, buffer.consts()->alignment()) + align_up(stubs_size, buffer.stubs()->alignment()); |
| |
| if (check_size && total_size > JVMCINMethodSizeLimit) { |
| return JVMCIEnv::code_too_large; |
| } |
| |
| buffer.initialize(total_size, locs_buffer_size); |
| if (buffer.blob() == NULL) { |
| return JVMCIEnv::cache_full; |
| } |
| buffer.initialize_stubs_size(stubs_size); |
| buffer.initialize_consts_size(_constants_size); |
| |
| _debug_recorder = new DebugInformationRecorder(_oop_recorder); |
| _debug_recorder->set_oopmaps(new OopMapSet()); |
| |
| buffer.initialize_oop_recorder(_oop_recorder); |
| |
| // copy the constant data into the newly created CodeBuffer |
| address end_data = _constants->start() + _constants_size; |
| memcpy(_constants->start(), data_section()->base(T_BYTE), _constants_size); |
| _constants->set_end(end_data); |
| |
| // copy the code into the newly created CodeBuffer |
| address end_pc = _instructions->start() + _code_size; |
| guarantee(_instructions->allocates2(end_pc), "initialize should have reserved enough space for all the code"); |
| memcpy(_instructions->start(), code()->base(T_BYTE), _code_size); |
| _instructions->set_end(end_pc); |
| |
| for (int i = 0; i < data_section_patches()->length(); i++) { |
| HandleMark hm(THREAD); |
| Handle patch(THREAD, data_section_patches()->obj_at(i)); |
| if (patch.is_null()) { |
| THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok); |
| } |
| Handle reference(THREAD, site_DataPatch::reference(patch)); |
| if (reference.is_null()) { |
| THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok); |
| } |
| if (!reference->is_a(site_ConstantReference::klass())) { |
| JVMCI_ERROR_OK("invalid patch in data section: %s", reference->klass()->signature_name()); |
| } |
| Handle constant(THREAD, site_ConstantReference::constant(reference)); |
| if (constant.is_null()) { |
| THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok); |
| } |
| address dest = _constants->start() + site_Site::pcOffset(patch); |
| if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) { |
| if (HotSpotMetaspaceConstantImpl::compressed(constant)) { |
| #ifdef _LP64 |
| *((narrowKlass*) dest) = record_narrow_metadata_reference(_constants, dest, constant, CHECK_OK); |
| #else |
| JVMCI_ERROR_OK("unexpected compressed Klass* in 32-bit mode"); |
| #endif |
| } else { |
| *((void**) dest) = record_metadata_reference(_constants, dest, constant, CHECK_OK); |
| } |
| } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) { |
| Handle obj(THREAD, HotSpotObjectConstantImpl::object(constant)); |
| jobject value = JNIHandles::make_local(obj()); |
| int oop_index = _oop_recorder->find_index(value); |
| |
| if (HotSpotObjectConstantImpl::compressed(constant)) { |
| #ifdef _LP64 |
| _constants->relocate(dest, oop_Relocation::spec(oop_index), relocInfo::narrow_oop_in_const); |
| #else |
| JVMCI_ERROR_OK("unexpected compressed oop in 32-bit mode"); |
| #endif |
| } else { |
| _constants->relocate(dest, oop_Relocation::spec(oop_index)); |
| } |
| } else { |
| JVMCI_ERROR_OK("invalid constant in data section: %s", constant->klass()->signature_name()); |
| } |
| } |
| jint last_pc_offset = -1; |
| for (int i = 0; i < sites->length(); i++) { |
| HandleMark hm(THREAD); |
| Handle site(THREAD, sites->obj_at(i)); |
| if (site.is_null()) { |
| THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok); |
| } |
| |
| jint pc_offset = site_Site::pcOffset(site); |
| |
| if (site->is_a(site_Call::klass())) { |
| TRACE_jvmci_4("call at %i", pc_offset); |
| site_Call(buffer, pc_offset, site, CHECK_OK); |
| } else if (site->is_a(site_Infopoint::klass())) { |
| // three reasons for infopoints denote actual safepoints |
| oop reason = site_Infopoint::reason(site); |
| if (site_InfopointReason::SAFEPOINT() == reason || site_InfopointReason::CALL() == reason || site_InfopointReason::IMPLICIT_EXCEPTION() == reason) { |
| TRACE_jvmci_4("safepoint at %i", pc_offset); |
| site_Safepoint(buffer, pc_offset, site, CHECK_OK); |
| if (_orig_pc_offset < 0) { |
| JVMCI_ERROR_OK("method contains safepoint, but has no deopt rescue slot"); |
| } |
| } else { |
| TRACE_jvmci_4("infopoint at %i", pc_offset); |
| site_Infopoint(buffer, pc_offset, site, CHECK_OK); |
| } |
| } else if (site->is_a(site_DataPatch::klass())) { |
| TRACE_jvmci_4("datapatch at %i", pc_offset); |
| site_DataPatch(buffer, pc_offset, site, CHECK_OK); |
| } else if (site->is_a(site_Mark::klass())) { |
| TRACE_jvmci_4("mark at %i", pc_offset); |
| site_Mark(buffer, pc_offset, site, CHECK_OK); |
| } else if (site->is_a(site_ExceptionHandler::klass())) { |
| TRACE_jvmci_4("exceptionhandler at %i", pc_offset); |
| site_ExceptionHandler(pc_offset, site); |
| } else { |
| JVMCI_ERROR_OK("unexpected site subclass: %s", site->klass()->signature_name()); |
| } |
| last_pc_offset = pc_offset; |
| |
| JavaThread* thread = JavaThread::current(); |
| if (SafepointMechanism::poll(thread)) { |
| // this is a hacky way to force a safepoint check but nothing else was jumping out at me. |
| ThreadToNativeFromVM ttnfv(thread); |
| } |
| } |
| |
| #ifndef PRODUCT |
| if (comments() != NULL) { |
| for (int i = 0; i < comments()->length(); i++) { |
| oop comment = comments()->obj_at(i); |
| assert(comment->is_a(HotSpotCompiledCode_Comment::klass()), "cce"); |
| jint offset = HotSpotCompiledCode_Comment::pcOffset(comment); |
| char* text = java_lang_String::as_utf8_string(HotSpotCompiledCode_Comment::text(comment)); |
| buffer.block_comment(offset, text); |
| } |
| } |
| #endif |
| return JVMCIEnv::ok; |
| } |
| |
| void CodeInstaller::assumption_NoFinalizableSubclass(Thread* thread, Handle assumption) { |
| Handle receiverType_handle (thread, Assumptions_NoFinalizableSubclass::receiverType(assumption())); |
| Klass* receiverType = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(receiverType_handle)); |
| _dependencies->assert_has_no_finalizable_subclasses(receiverType); |
| } |
| |
| void CodeInstaller::assumption_ConcreteSubtype(Thread* thread, Handle assumption) { |
| Handle context_handle (thread, Assumptions_ConcreteSubtype::context(assumption())); |
| Handle subtype_handle (thread, Assumptions_ConcreteSubtype::subtype(assumption())); |
| Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle)); |
| Klass* subtype = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(subtype_handle)); |
| |
| assert(context->is_abstract(), ""); |
| _dependencies->assert_abstract_with_unique_concrete_subtype(context, subtype); |
| } |
| |
| void CodeInstaller::assumption_LeafType(Thread* thread, Handle assumption) { |
| Handle context_handle (thread, Assumptions_LeafType::context(assumption())); |
| Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle)); |
| |
| _dependencies->assert_leaf_type(context); |
| } |
| |
| void CodeInstaller::assumption_ConcreteMethod(Thread* thread, Handle assumption) { |
| Handle impl_handle (thread, Assumptions_ConcreteMethod::impl(assumption())); |
| Handle context_handle (thread, Assumptions_ConcreteMethod::context(assumption())); |
| |
| methodHandle impl = getMethodFromHotSpotMethod(impl_handle()); |
| Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle)); |
| |
| _dependencies->assert_unique_concrete_method(context, impl()); |
| } |
| |
| void CodeInstaller::assumption_CallSiteTargetValue(Thread* thread, Handle assumption) { |
| Handle callSite(thread, HotSpotObjectConstantImpl::object(Assumptions_CallSiteTargetValue::callSite(assumption()))); |
| Handle methodHandle(thread, HotSpotObjectConstantImpl::object(Assumptions_CallSiteTargetValue::methodHandle(assumption()))); |
| |
| _dependencies->assert_call_site_target_value(callSite(), methodHandle()); |
| } |
| |
| void CodeInstaller::site_ExceptionHandler(jint pc_offset, Handle exc) { |
| jint handler_offset = site_ExceptionHandler::handlerPos(exc); |
| |
| // Subtable header |
| _exception_handler_table.add_entry(HandlerTableEntry(1, pc_offset, 0)); |
| |
| // Subtable entry |
| _exception_handler_table.add_entry(HandlerTableEntry(-1, handler_offset, 0)); |
| } |
| |
| // If deoptimization happens, the interpreter should reexecute these bytecodes. |
| // This function mainly helps the compilers to set up the reexecute bit. |
| static bool bytecode_should_reexecute(Bytecodes::Code code) { |
| switch (code) { |
| case Bytecodes::_invokedynamic: |
| case Bytecodes::_invokevirtual: |
| case Bytecodes::_invokeinterface: |
| case Bytecodes::_invokespecial: |
| case Bytecodes::_invokestatic: |
| return false; |
| default: |
| return true; |
| } |
| return true; |
| } |
| |
| GrowableArray<ScopeValue*>* CodeInstaller::record_virtual_objects(Handle debug_info, TRAPS) { |
| objArrayHandle virtualObjects(THREAD, DebugInfo::virtualObjectMapping(debug_info)); |
| if (virtualObjects.is_null()) { |
| return NULL; |
| } |
| GrowableArray<ScopeValue*>* objects = new GrowableArray<ScopeValue*>(virtualObjects->length(), virtualObjects->length(), NULL); |
| // Create the unique ObjectValues |
| for (int i = 0; i < virtualObjects->length(); i++) { |
| HandleMark hm(THREAD); |
| Handle value(THREAD, virtualObjects->obj_at(i)); |
| int id = VirtualObject::id(value); |
| Handle type(THREAD, VirtualObject::type(value)); |
| oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type); |
| ObjectValue* sv = new ObjectValue(id, new ConstantOopWriteValue(JNIHandles::make_local(Thread::current(), javaMirror))); |
| if (id < 0 || id >= objects->length()) { |
| JVMCI_ERROR_NULL("virtual object id %d out of bounds", id); |
| } |
| if (objects->at(id) != NULL) { |
| JVMCI_ERROR_NULL("duplicate virtual object id %d", id); |
| } |
| objects->at_put(id, sv); |
| } |
| // All the values which could be referenced by the VirtualObjects |
| // exist, so now describe all the VirtualObjects themselves. |
| for (int i = 0; i < virtualObjects->length(); i++) { |
| HandleMark hm(THREAD); |
| Handle value(THREAD, virtualObjects->obj_at(i)); |
| int id = VirtualObject::id(value); |
| record_object_value(objects->at(id)->as_ObjectValue(), value, objects, CHECK_NULL); |
| } |
| _debug_recorder->dump_object_pool(objects); |
| return objects; |
| } |
| |
| void CodeInstaller::record_scope(jint pc_offset, Handle debug_info, ScopeMode scope_mode, bool return_oop, TRAPS) { |
| Handle position(THREAD, DebugInfo::bytecodePosition(debug_info)); |
| if (position.is_null()) { |
| // Stubs do not record scope info, just oop maps |
| return; |
| } |
| |
| GrowableArray<ScopeValue*>* objectMapping; |
| if (scope_mode == CodeInstaller::FullFrame) { |
| objectMapping = record_virtual_objects(debug_info, CHECK); |
| } else { |
| objectMapping = NULL; |
| } |
| record_scope(pc_offset, position, scope_mode, objectMapping, return_oop, CHECK); |
| } |
| |
| int CodeInstaller::map_jvmci_bci(int bci) { |
| if (bci < 0) { |
| if (bci == BytecodeFrame::BEFORE_BCI()) { |
| return BeforeBci; |
| } else if (bci == BytecodeFrame::AFTER_BCI()) { |
| return AfterBci; |
| } else if (bci == BytecodeFrame::UNWIND_BCI()) { |
| return UnwindBci; |
| } else if (bci == BytecodeFrame::AFTER_EXCEPTION_BCI()) { |
| return AfterExceptionBci; |
| } else if (bci == BytecodeFrame::UNKNOWN_BCI()) { |
| return UnknownBci; |
| } else if (bci == BytecodeFrame::INVALID_FRAMESTATE_BCI()) { |
| return InvalidFrameStateBci; |
| } |
| ShouldNotReachHere(); |
| } |
| return bci; |
| } |
| |
| void CodeInstaller::record_scope(jint pc_offset, Handle position, ScopeMode scope_mode, GrowableArray<ScopeValue*>* objects, bool return_oop, TRAPS) { |
| Handle frame; |
| if (scope_mode == CodeInstaller::FullFrame) { |
| if (!position->is_a(BytecodeFrame::klass())) { |
| JVMCI_ERROR("Full frame expected for debug info at %i", pc_offset); |
| } |
| frame = position; |
| } |
| Handle caller_frame (THREAD, BytecodePosition::caller(position)); |
| if (caller_frame.not_null()) { |
| record_scope(pc_offset, caller_frame, scope_mode, objects, return_oop, CHECK); |
| } |
| |
| Handle hotspot_method (THREAD, BytecodePosition::method(position)); |
| Method* method = getMethodFromHotSpotMethod(hotspot_method()); |
| jint bci = map_jvmci_bci(BytecodePosition::bci(position)); |
| |
| TRACE_jvmci_2("Recording scope pc_offset=%d bci=%d method=%s", pc_offset, bci, method->name_and_sig_as_C_string()); |
| |
| bool reexecute = false; |
| if (frame.not_null()) { |
| if (bci < 0) { |
| reexecute = false; |
| } else { |
| Bytecodes::Code code = Bytecodes::java_code_at(method, method->bcp_from(bci)); |
| reexecute = bytecode_should_reexecute(code); |
| if (frame.not_null()) { |
| reexecute = (BytecodeFrame::duringCall(frame) == JNI_FALSE); |
| } |
| } |
| } |
| |
| DebugToken* locals_token = NULL; |
| DebugToken* expressions_token = NULL; |
| DebugToken* monitors_token = NULL; |
| bool throw_exception = false; |
| |
| if (frame.not_null()) { |
| jint local_count = BytecodeFrame::numLocals(frame); |
| jint expression_count = BytecodeFrame::numStack(frame); |
| jint monitor_count = BytecodeFrame::numLocks(frame); |
| objArrayHandle values(THREAD, BytecodeFrame::values(frame)); |
| objArrayHandle slotKinds(THREAD, BytecodeFrame::slotKinds(frame)); |
| |
| if (values.is_null() || slotKinds.is_null()) { |
| THROW(vmSymbols::java_lang_NullPointerException()); |
| } |
| if (local_count + expression_count + monitor_count != values->length()) { |
| JVMCI_ERROR("unexpected values length %d in scope (%d locals, %d expressions, %d monitors)", values->length(), local_count, expression_count, monitor_count); |
| } |
| if (local_count + expression_count != slotKinds->length()) { |
| JVMCI_ERROR("unexpected slotKinds length %d in scope (%d locals, %d expressions)", slotKinds->length(), local_count, expression_count); |
| } |
| |
| GrowableArray<ScopeValue*>* locals = local_count > 0 ? new GrowableArray<ScopeValue*> (local_count) : NULL; |
| GrowableArray<ScopeValue*>* expressions = expression_count > 0 ? new GrowableArray<ScopeValue*> (expression_count) : NULL; |
| GrowableArray<MonitorValue*>* monitors = monitor_count > 0 ? new GrowableArray<MonitorValue*> (monitor_count) : NULL; |
| |
| TRACE_jvmci_2("Scope at bci %d with %d values", bci, values->length()); |
| TRACE_jvmci_2("%d locals %d expressions, %d monitors", local_count, expression_count, monitor_count); |
| |
| for (jint i = 0; i < values->length(); i++) { |
| HandleMark hm(THREAD); |
| ScopeValue* second = NULL; |
| Handle value(THREAD, values->obj_at(i)); |
| if (i < local_count) { |
| BasicType type = JVMCIRuntime::kindToBasicType(Handle(THREAD, slotKinds->obj_at(i)), CHECK); |
| ScopeValue* first = get_scope_value(value, type, objects, second, CHECK); |
| if (second != NULL) { |
| locals->append(second); |
| } |
| locals->append(first); |
| } else if (i < local_count + expression_count) { |
| BasicType type = JVMCIRuntime::kindToBasicType(Handle(THREAD, slotKinds->obj_at(i)), CHECK); |
| ScopeValue* first = get_scope_value(value, type, objects, second, CHECK); |
| if (second != NULL) { |
| expressions->append(second); |
| } |
| expressions->append(first); |
| } else { |
| MonitorValue *monitor = get_monitor_value(value, objects, CHECK); |
| monitors->append(monitor); |
| } |
| if (second != NULL) { |
| i++; |
| if (i >= values->length() || values->obj_at(i) != Value::ILLEGAL()) { |
| JVMCI_ERROR("double-slot value not followed by Value.ILLEGAL"); |
| } |
| } |
| } |
| |
| locals_token = _debug_recorder->create_scope_values(locals); |
| expressions_token = _debug_recorder->create_scope_values(expressions); |
| monitors_token = _debug_recorder->create_monitor_values(monitors); |
| |
| throw_exception = BytecodeFrame::rethrowException(frame) == JNI_TRUE; |
| } |
| |
| _debug_recorder->describe_scope(pc_offset, method, NULL, bci, reexecute, throw_exception, false, return_oop, |
| locals_token, expressions_token, monitors_token); |
| } |
| |
| void CodeInstaller::site_Safepoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) { |
| Handle debug_info (THREAD, site_Infopoint::debugInfo(site)); |
| if (debug_info.is_null()) { |
| JVMCI_ERROR("debug info expected at safepoint at %i", pc_offset); |
| } |
| |
| // address instruction = _instructions->start() + pc_offset; |
| // jint next_pc_offset = Assembler::locate_next_instruction(instruction) - _instructions->start(); |
| OopMap *map = create_oop_map(debug_info, CHECK); |
| _debug_recorder->add_safepoint(pc_offset, map); |
| record_scope(pc_offset, debug_info, CodeInstaller::FullFrame, CHECK); |
| _debug_recorder->end_safepoint(pc_offset); |
| } |
| |
| void CodeInstaller::site_Infopoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) { |
| Handle debug_info (THREAD, site_Infopoint::debugInfo(site)); |
| if (debug_info.is_null()) { |
| JVMCI_ERROR("debug info expected at infopoint at %i", pc_offset); |
| } |
| |
| // We'd like to check that pc_offset is greater than the |
| // last pc recorded with _debug_recorder (raising an exception if not) |
| // but DebugInformationRecorder doesn't have sufficient public API. |
| |
| _debug_recorder->add_non_safepoint(pc_offset); |
| record_scope(pc_offset, debug_info, CodeInstaller::BytecodePosition, CHECK); |
| _debug_recorder->end_non_safepoint(pc_offset); |
| } |
| |
| void CodeInstaller::site_Call(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) { |
| Handle target(THREAD, site_Call::target(site)); |
| InstanceKlass* target_klass = InstanceKlass::cast(target->klass()); |
| |
| Handle hotspot_method; // JavaMethod |
| Handle foreign_call; |
| |
| if (target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) { |
| foreign_call = target; |
| } else { |
| hotspot_method = target; |
| } |
| |
| Handle debug_info (THREAD, site_Call::debugInfo(site)); |
| |
| assert(hotspot_method.not_null() ^ foreign_call.not_null(), "Call site needs exactly one type"); |
| |
| NativeInstruction* inst = nativeInstruction_at(_instructions->start() + pc_offset); |
| jint next_pc_offset = CodeInstaller::pd_next_offset(inst, pc_offset, hotspot_method, CHECK); |
| |
| if (debug_info.not_null()) { |
| OopMap *map = create_oop_map(debug_info, CHECK); |
| _debug_recorder->add_safepoint(next_pc_offset, map); |
| |
| bool return_oop = hotspot_method.not_null() && getMethodFromHotSpotMethod(hotspot_method())->is_returning_oop(); |
| |
| record_scope(next_pc_offset, debug_info, CodeInstaller::FullFrame, return_oop, CHECK); |
| } |
| |
| if (foreign_call.not_null()) { |
| jlong foreign_call_destination = HotSpotForeignCallTarget::address(foreign_call); |
| if (_immutable_pic_compilation) { |
| // Use fake short distance during PIC compilation. |
| foreign_call_destination = (jlong)(_instructions->start() + pc_offset); |
| } |
| CodeInstaller::pd_relocate_ForeignCall(inst, foreign_call_destination, CHECK); |
| } else { // method != NULL |
| if (debug_info.is_null()) { |
| JVMCI_ERROR("debug info expected at call at %i", pc_offset); |
| } |
| |
| TRACE_jvmci_3("method call"); |
| CodeInstaller::pd_relocate_JavaMethod(buffer, hotspot_method, pc_offset, CHECK); |
| if (_next_call_type == INVOKESTATIC || _next_call_type == INVOKESPECIAL) { |
| // Need a static call stub for transitions from compiled to interpreted. |
| CompiledStaticCall::emit_to_interp_stub(buffer, _instructions->start() + pc_offset); |
| } |
| #if INCLUDE_AOT |
| // Trampoline to far aot code. |
| CompiledStaticCall::emit_to_aot_stub(buffer, _instructions->start() + pc_offset); |
| #endif |
| } |
| |
| _next_call_type = INVOKE_INVALID; |
| |
| if (debug_info.not_null()) { |
| _debug_recorder->end_safepoint(next_pc_offset); |
| } |
| } |
| |
| void CodeInstaller::site_DataPatch(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) { |
| Handle reference(THREAD, site_DataPatch::reference(site)); |
| if (reference.is_null()) { |
| THROW(vmSymbols::java_lang_NullPointerException()); |
| } else if (reference->is_a(site_ConstantReference::klass())) { |
| Handle constant(THREAD, site_ConstantReference::constant(reference)); |
| if (constant.is_null()) { |
| THROW(vmSymbols::java_lang_NullPointerException()); |
| } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) { |
| if (!_immutable_pic_compilation) { |
| // Do not patch during PIC compilation. |
| pd_patch_OopConstant(pc_offset, constant, CHECK); |
| } |
| } else if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) { |
| if (!_immutable_pic_compilation) { |
| pd_patch_MetaspaceConstant(pc_offset, constant, CHECK); |
| } |
| } else if (constant->is_a(HotSpotSentinelConstant::klass())) { |
| if (!_immutable_pic_compilation) { |
| JVMCI_ERROR("sentinel constant not supported for normal compiles: %s", constant->klass()->signature_name()); |
| } |
| } else { |
| JVMCI_ERROR("unknown constant type in data patch: %s", constant->klass()->signature_name()); |
| } |
| } else if (reference->is_a(site_DataSectionReference::klass())) { |
| int data_offset = site_DataSectionReference::offset(reference); |
| if (0 <= data_offset && data_offset < _constants_size) { |
| pd_patch_DataSectionReference(pc_offset, data_offset, CHECK); |
| } else { |
| JVMCI_ERROR("data offset 0x%X points outside data section (size 0x%X)", data_offset, _constants_size); |
| } |
| } else { |
| JVMCI_ERROR("unknown data patch type: %s", reference->klass()->signature_name()); |
| } |
| } |
| |
| void CodeInstaller::site_Mark(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) { |
| Handle id_obj (THREAD, site_Mark::id(site)); |
| |
| if (id_obj.not_null()) { |
| if (!java_lang_boxing_object::is_instance(id_obj(), T_INT)) { |
| JVMCI_ERROR("expected Integer id, got %s", id_obj->klass()->signature_name()); |
| } |
| jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT)); |
| |
| address pc = _instructions->start() + pc_offset; |
| |
| switch (id) { |
| case UNVERIFIED_ENTRY: |
| _offsets.set_value(CodeOffsets::Entry, pc_offset); |
| break; |
| case VERIFIED_ENTRY: |
| _offsets.set_value(CodeOffsets::Verified_Entry, pc_offset); |
| break; |
| case OSR_ENTRY: |
| _offsets.set_value(CodeOffsets::OSR_Entry, pc_offset); |
| break; |
| case EXCEPTION_HANDLER_ENTRY: |
| _offsets.set_value(CodeOffsets::Exceptions, pc_offset); |
| break; |
| case DEOPT_HANDLER_ENTRY: |
| _offsets.set_value(CodeOffsets::Deopt, pc_offset); |
| break; |
| case FRAME_COMPLETE: |
| _offsets.set_value(CodeOffsets::Frame_Complete, pc_offset); |
| break; |
| case INVOKEVIRTUAL: |
| case INVOKEINTERFACE: |
| case INLINE_INVOKE: |
| case INVOKESTATIC: |
| case INVOKESPECIAL: |
| _next_call_type = (MarkId) id; |
| _invoke_mark_pc = pc; |
| break; |
| case POLL_NEAR: |
| case POLL_FAR: |
| case POLL_RETURN_NEAR: |
| case POLL_RETURN_FAR: |
| pd_relocate_poll(pc, id, CHECK); |
| break; |
| case CARD_TABLE_SHIFT: |
| case CARD_TABLE_ADDRESS: |
| case HEAP_TOP_ADDRESS: |
| case HEAP_END_ADDRESS: |
| case NARROW_KLASS_BASE_ADDRESS: |
| case NARROW_OOP_BASE_ADDRESS: |
| case CRC_TABLE_ADDRESS: |
| case LOG_OF_HEAP_REGION_GRAIN_BYTES: |
| case INLINE_CONTIGUOUS_ALLOCATION_SUPPORTED: |
| break; |
| default: |
| JVMCI_ERROR("invalid mark id: %d", id); |
| break; |
| } |
| } |
| } |
