/* * Copyright (c) 2011, 2019, 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 "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/handles.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()); VMReg CodeInstaller::getVMRegFromLocation(JVMCIObject location, int total_frame_size, JVMCI_TRAPS) { if (location.is_null()) { JVMCI_THROW_NULL(NullPointerException); } JVMCIObject reg = jvmci_env()->get_code_Location_reg(location); jint offset = jvmci_env()->get_code_Location_offset(location); if (reg.is_non_null()) { // register jint number = jvmci_env()->get_code_Register_number(reg); VMReg vmReg = CodeInstaller::get_hotspot_reg(number, JVMCI_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); } } } // creates a HotSpot oop map out of the byte arrays provided by DebugInfo OopMap* CodeInstaller::create_oop_map(JVMCIObject debug_info, JVMCI_TRAPS) { JVMCIObject reference_map = jvmci_env()->get_DebugInfo_referenceMap(debug_info); if (reference_map.is_null()) { JVMCI_THROW_NULL(NullPointerException); } if (!jvmci_env()->isa_HotSpotReferenceMap(reference_map)) { JVMCI_ERROR_NULL("unknown reference map: %s", jvmci_env()->klass_name(reference_map)); } if (!_has_wide_vector && SharedRuntime::is_wide_vector(jvmci_env()->get_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); JVMCIObjectArray objects = jvmci_env()->get_HotSpotReferenceMap_objects(reference_map); JVMCIObjectArray derivedBase = jvmci_env()->get_HotSpotReferenceMap_derivedBase(reference_map); JVMCIPrimitiveArray sizeInBytes = jvmci_env()->get_HotSpotReferenceMap_sizeInBytes(reference_map); if (objects.is_null() || derivedBase.is_null() || sizeInBytes.is_null()) { JVMCI_THROW_NULL(NullPointerException); } if (JVMCIENV->get_length(objects) != JVMCIENV->get_length(derivedBase) || JVMCIENV->get_length(objects) != JVMCIENV->get_length(sizeInBytes)) { JVMCI_ERROR_NULL("arrays in reference map have different sizes: %d %d %d", JVMCIENV->get_length(objects), JVMCIENV->get_length(derivedBase), JVMCIENV->get_length(sizeInBytes)); } for (int i = 0; i < JVMCIENV->get_length(objects); i++) { JVMCIObject location = JVMCIENV->get_object_at(objects, i); JVMCIObject baseLocation = JVMCIENV->get_object_at(derivedBase, i); jint bytes = JVMCIENV->get_int_at(sizeInBytes, i); VMReg vmReg = getVMRegFromLocation(location, _total_frame_size, JVMCI_CHECK_NULL); if (baseLocation.is_non_null()) { // derived oop #ifdef _LP64 if (bytes == 8) { #else if (bytes == 4) { #endif VMReg baseReg = getVMRegFromLocation(baseLocation, _total_frame_size, JVMCI_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); } } JVMCIObject callee_save_info = jvmci_env()->get_DebugInfo_calleeSaveInfo(debug_info); if (callee_save_info.is_non_null()) { JVMCIObjectArray registers = jvmci_env()->get_RegisterSaveLayout_registers(callee_save_info); JVMCIPrimitiveArray slots = jvmci_env()->get_RegisterSaveLayout_slots(callee_save_info); for (jint i = 0; i < JVMCIENV->get_length(slots); i++) { JVMCIObject jvmci_reg = JVMCIENV->get_object_at(registers, i); jint jvmci_reg_number = jvmci_env()->get_code_Register_number(jvmci_reg); VMReg hotspot_reg = CodeInstaller::get_hotspot_reg(jvmci_reg_number, JVMCI_CHECK_NULL); // HotSpot stack slots are 4 bytes jint jvmci_slot = JVMCIENV->get_int_at(slots, 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; } #if INCLUDE_AOT AOTOopRecorder::AOTOopRecorder(CodeInstaller* code_inst, Arena* arena, bool deduplicate) : OopRecorder(arena, deduplicate) { _code_inst = code_inst; _meta_refs = new GrowableArray(); } 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(); JVMCIEnv* JVMCIENV = _code_inst->jvmci_env(); 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); JVMCIObject result; guarantee(h != NULL, "If DebugInformationRecorder::describe_scope passes NULL oldCount == newCount must hold."); if (h->is_klass()) { klass = (Klass*) h; result = JVMCIENV->get_jvmci_type(klass, JVMCI_CATCH); } else if (h->is_method()) { Method* method = (Method*) h; methodHandle mh(method); result = JVMCIENV->get_jvmci_method(method, JVMCI_CATCH); } jobject ref = JVMCIENV->get_jobject(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); } #endif // INCLUDE_AOT void* CodeInstaller::record_metadata_reference(CodeSection* section, address dest, JVMCIObject constant, JVMCI_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*). */ JVMCIObject obj = jvmci_env()->get_HotSpotMetaspaceConstantImpl_metaspaceObject(constant); if (jvmci_env()->isa_HotSpotResolvedObjectTypeImpl(obj)) { Klass* klass = JVMCIENV->asKlass(obj); assert(!jvmci_env()->get_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 (jvmci_env()->isa_HotSpotResolvedJavaMethodImpl(obj)) { Method* method = jvmci_env()->asMethod(obj); assert(!jvmci_env()->get_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", jvmci_env()->klass_name(obj)); } } #ifdef _LP64 narrowKlass CodeInstaller::record_narrow_metadata_reference(CodeSection* section, address dest, JVMCIObject constant, JVMCI_TRAPS) { JVMCIObject obj = jvmci_env()->get_HotSpotMetaspaceConstantImpl_metaspaceObject(constant); assert(jvmci_env()->get_HotSpotMetaspaceConstantImpl_compressed(constant), "unexpected uncompressed pointer"); if (!jvmci_env()->isa_HotSpotResolvedObjectTypeImpl(obj)) { JVMCI_ERROR_0("unexpected compressed pointer of type %s", jvmci_env()->klass_name(obj)); } Klass* klass = JVMCIENV->asKlass(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(JVMCIObject value) { JVMCIObject valueKind = jvmci_env()->get_Value_valueKind(value); JVMCIObject platformKind = jvmci_env()->get_ValueKind_platformKind(valueKind); if (jvmci_env()->equals(platformKind, word_kind())) { return Location::oop; } else { return Location::narrowoop; } } ScopeValue* CodeInstaller::get_scope_value(JVMCIObject value, BasicType type, GrowableArray* objects, ScopeValue* &second, JVMCI_TRAPS) { second = NULL; if (value.is_null()) { JVMCI_THROW_NULL(NullPointerException); } else if (JVMCIENV->equals(value, jvmci_env()->get_Value_ILLEGAL())) { if (type != T_ILLEGAL) { JVMCI_ERROR_NULL("unexpected illegal value, expected %s", basictype_to_str(type)); } return _illegal_value; } else if (jvmci_env()->isa_RegisterValue(value)) { JVMCIObject reg = jvmci_env()->get_RegisterValue_reg(value); jint number = jvmci_env()->get_code_Register_number(reg); VMReg hotspotRegister = get_hotspot_reg(number, JVMCI_CHECK_NULL); if (is_general_purpose_reg(hotspotRegister)) { Location::Type locationType; if (type == T_OBJECT) { locationType = get_oop_type(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 (jvmci_env()->isa_StackSlot(value)) { jint offset = jvmci_env()->get_StackSlot_offset(value); if (jvmci_env()->get_StackSlot_addFrameSize(value)) { offset += _total_frame_size; } Location::Type locationType; if (type == T_OBJECT) { locationType = get_oop_type(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 (jvmci_env()->isa_JavaConstant(value)) { if (jvmci_env()->isa_PrimitiveConstant(value)) { if (jvmci_env()->isa_RawConstant(value)) { jlong prim = jvmci_env()->get_PrimitiveConstant_primitive(value); return new ConstantLongValue(prim); } else { BasicType constantType = jvmci_env()->kindToBasicType(jvmci_env()->get_PrimitiveConstant_kind(value), JVMCI_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)jvmci_env()->get_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 = jvmci_env()->get_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 (jvmci_env()->isa_NullConstant(value) || jvmci_env()->isa_HotSpotCompressedNullConstant(value)) { if (type == T_OBJECT) { return _oop_null_scope_value; } else { JVMCI_ERROR_NULL("unexpected null constant, expected %s", basictype_to_str(type)); } } else if (jvmci_env()->isa_HotSpotObjectConstantImpl(value)) { if (type == T_OBJECT) { Handle obj = jvmci_env()->asConstant(value, JVMCI_CHECK_NULL); 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 (jvmci_env()->isa_VirtualObject(value)) { if (type == T_OBJECT) { int id = jvmci_env()->get_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", jvmci_env()->klass_name(value)) } void CodeInstaller::record_object_value(ObjectValue* sv, JVMCIObject value, GrowableArray* objects, JVMCI_TRAPS) { JVMCIObject type = jvmci_env()->get_VirtualObject_type(value); int id = jvmci_env()->get_VirtualObject_id(value); Klass* klass = JVMCIENV->asKlass(type); bool isLongArray = klass == Universe::longArrayKlassObj(); JVMCIObjectArray values = jvmci_env()->get_VirtualObject_values(value); JVMCIObjectArray slotKinds = jvmci_env()->get_VirtualObject_slotKinds(value); for (jint i = 0; i < JVMCIENV->get_length(values); i++) { ScopeValue* cur_second = NULL; JVMCIObject object = JVMCIENV->get_object_at(values, i); BasicType type = jvmci_env()->kindToBasicType(JVMCIENV->get_object_at(slotKinds, i), JVMCI_CHECK); ScopeValue* value = get_scope_value(object, type, objects, cur_second, JVMCI_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(JVMCIObject value, GrowableArray* objects, JVMCI_TRAPS) { if (value.is_null()) { JVMCI_THROW_NULL(NullPointerException); } if (!jvmci_env()->isa_StackLockValue(value)) { JVMCI_ERROR_NULL("Monitors must be of type StackLockValue, got %s", jvmci_env()->klass_name(value)); } ScopeValue* second = NULL; ScopeValue* owner_value = get_scope_value(jvmci_env()->get_StackLockValue_owner(value), T_OBJECT, objects, second, JVMCI_CHECK_NULL); assert(second == NULL, "monitor cannot occupy two stack slots"); ScopeValue* lock_data_value = get_scope_value(jvmci_env()->get_StackLockValue_slot(value), T_LONG, objects, second, JVMCI_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 (jvmci_env()->get_StackLockValue_eliminated(value)) { eliminated = true; } return new MonitorValue(owner_value, lock_data_loc, eliminated); } void CodeInstaller::initialize_dependencies(JVMCIObject compiled_code, OopRecorder* oop_recorder, JVMCI_TRAPS) { JavaThread* thread = JavaThread::current(); CompilerThread* compilerThread = thread->is_Compiler_thread() ? thread->as_CompilerThread() : NULL; _oop_recorder = oop_recorder; _dependencies = new Dependencies(&_arena, _oop_recorder, compilerThread != NULL ? compilerThread->log() : NULL); JVMCIObjectArray assumptions = jvmci_env()->get_HotSpotCompiledCode_assumptions(compiled_code); if (assumptions.is_non_null()) { int length = JVMCIENV->get_length(assumptions); for (int i = 0; i < length; ++i) { JVMCIObject assumption = JVMCIENV->get_object_at(assumptions, i); if (assumption.is_non_null()) { if (jvmci_env()->isa_Assumptions_NoFinalizableSubclass(assumption)) { assumption_NoFinalizableSubclass(assumption); } else if (jvmci_env()->isa_Assumptions_ConcreteSubtype(assumption)) { assumption_ConcreteSubtype(assumption); } else if (jvmci_env()->isa_Assumptions_LeafType(assumption)) { assumption_LeafType(assumption); } else if (jvmci_env()->isa_Assumptions_ConcreteMethod(assumption)) { assumption_ConcreteMethod(assumption); } else if (jvmci_env()->isa_Assumptions_CallSiteTargetValue(assumption)) { assumption_CallSiteTargetValue(assumption, JVMCI_CHECK); } else { JVMCI_ERROR("unexpected Assumption subclass %s", jvmci_env()->klass_name(assumption)); } } } } if (JvmtiExport::can_hotswap_or_post_breakpoint()) { JVMCIObjectArray methods = jvmci_env()->get_HotSpotCompiledCode_methods(compiled_code); if (methods.is_non_null()) { int length = JVMCIENV->get_length(methods); for (int i = 0; i < length; ++i) { JVMCIObject method_handle = JVMCIENV->get_object_at(methods, i); methodHandle method = jvmci_env()->asMethod(method_handle); _dependencies->assert_evol_method(method()); } } } } #if INCLUDE_AOT 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; } JVMCI::CodeInstallResult CodeInstaller::gather_metadata(JVMCIObject target, JVMCIObject compiled_code, CodeMetadata& metadata, JVMCI_TRAPS) { assert(JVMCIENV->is_hotspot(), "AOT code is executed only in HotSpot mode"); CodeBuffer buffer("JVMCI Compiler CodeBuffer for Metadata"); AOTOopRecorder* recorder = new AOTOopRecorder(this, &_arena, true); initialize_dependencies(compiled_code, recorder, JVMCI_CHECK_OK); metadata.set_oop_recorder(recorder); // Get instructions and constants CodeSections early because we need it. _instructions = buffer.insts(); _constants = buffer.consts(); buffer.set_immutable_PIC(_immutable_pic_compilation); initialize_fields(target, compiled_code, JVMCI_CHECK_OK); JVMCI::CodeInstallResult result = initialize_buffer(buffer, false, JVMCI_CHECK_OK); if (result != JVMCI::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 JVMCI::ok; } #endif // INCLUDE_AOT // constructor used to create a method JVMCI::CodeInstallResult CodeInstaller::install(JVMCICompiler* compiler, JVMCIObject target, JVMCIObject compiled_code, CodeBlob*& cb, JVMCIObject installed_code, FailedSpeculation** failed_speculations, char* speculations, int speculations_len, JVMCI_TRAPS) { CodeBuffer buffer("JVMCI Compiler CodeBuffer"); OopRecorder* recorder = new OopRecorder(&_arena, true); initialize_dependencies(compiled_code, recorder, JVMCI_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, compiled_code, JVMCI_CHECK_OK); JVMCI::CodeInstallResult result = initialize_buffer(buffer, true, JVMCI_CHECK_OK); if (result != JVMCI::ok) { return result; } int stack_slots = _total_frame_size / HeapWordSize; // conversion to words if (!jvmci_env()->isa_HotSpotCompiledNmethod(compiled_code)) { JVMCIObject stubName = jvmci_env()->get_HotSpotCompiledCode_name(compiled_code); if (stubName.is_null()) { JVMCI_ERROR_OK("stub should have a name"); } char* name = strdup(jvmci_env()->as_utf8_string(stubName)); cb = RuntimeStub::new_runtime_stub(name, &buffer, CodeOffsets::frame_never_safe, stack_slots, _debug_recorder->_oopmaps, false); result = JVMCI::ok; } else { JVMCICompileState* compile_state = (JVMCICompileState*) (address) jvmci_env()->get_HotSpotCompiledNmethod_compileState(compiled_code); if (compile_state != NULL) { jvmci_env()->set_compile_state(compile_state); } methodHandle method = jvmci_env()->asMethod(jvmci_env()->get_HotSpotCompiledNmethod_method(compiled_code)); jint entry_bci = jvmci_env()->get_HotSpotCompiledNmethod_entryBCI(compiled_code); bool has_unsafe_access = jvmci_env()->get_HotSpotCompiledNmethod_hasUnsafeAccess(compiled_code) == JNI_TRUE; jint id = jvmci_env()->get_HotSpotCompiledNmethod_id(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); jvmci_env()->set_HotSpotCompiledNmethod_id(compiled_code, id); } if (!jvmci_env()->isa_HotSpotNmethod(installed_code)) { JVMCI_THROW_MSG_(IllegalArgumentException, "InstalledCode object must be a HotSpotNmethod when installing a HotSpotCompiledNmethod", JVMCI::ok); } JVMCIObject mirror = installed_code; nmethod* nm = NULL; result = runtime()->register_method(jvmci_env(), method, nm, entry_bci, &_offsets, _orig_pc_offset, &buffer, stack_slots, _debug_recorder->_oopmaps, &_exception_handler_table, compiler, _debug_recorder, _dependencies, id, has_unsafe_access, _has_wide_vector, compiled_code, mirror, failed_speculations, speculations, speculations_len); cb = nm->as_codeblob_or_null(); if (nm != NULL && compile_state == 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(JVMCIObject target, JVMCIObject compiled_code, JVMCI_TRAPS) { if (jvmci_env()->isa_HotSpotCompiledNmethod(compiled_code)) { JVMCIObject hotspotJavaMethod = jvmci_env()->get_HotSpotCompiledNmethod_method(compiled_code); methodHandle method = jvmci_env()->asMethod(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 = jvmci_env()->get_HotSpotCompiledCode_sites(compiled_code); _code_handle = jvmci_env()->get_HotSpotCompiledCode_targetCode(compiled_code); _code_size = jvmci_env()->get_HotSpotCompiledCode_targetCodeSize(compiled_code); _total_frame_size = jvmci_env()->get_HotSpotCompiledCode_totalFrameSize(compiled_code); JVMCIObject deoptRescueSlot = jvmci_env()->get_HotSpotCompiledCode_deoptRescueSlot(compiled_code); if (deoptRescueSlot.is_null()) { _orig_pc_offset = -1; } else { _orig_pc_offset = jvmci_env()->get_StackSlot_offset(deoptRescueSlot); if (jvmci_env()->get_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 = jvmci_env()->get_HotSpotCompiledCode_dataSection(compiled_code); if ((_constants->alignment() % jvmci_env()->get_HotSpotCompiledCode_dataSectionAlignment(compiled_code)) != 0) { JVMCI_ERROR("invalid data section alignment: %d", jvmci_env()->get_HotSpotCompiledCode_dataSectionAlignment(compiled_code)); } _constants_size = JVMCIENV->get_length(data_section()); _data_section_patches_handle = jvmci_env()->get_HotSpotCompiledCode_dataSectionPatches(compiled_code); #ifndef PRODUCT _comments_handle = jvmci_env()->get_HotSpotCompiledCode_comments(compiled_code); #endif _next_call_type = INVOKE_INVALID; _has_wide_vector = false; JVMCIObject arch = jvmci_env()->get_TargetDescription_arch(target); _word_kind_handle = jvmci_env()->get_Architecture_wordKind(arch); } int CodeInstaller::estimate_stubs_size(JVMCI_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; JVMCIObjectArray sites = this->sites(); for (int i = 0; i < JVMCIENV->get_length(sites); i++) { JVMCIObject site = JVMCIENV->get_object_at(sites, i); if (!site.is_null()) { if (jvmci_env()->isa_site_Mark(site)) { JVMCIObject id_obj = jvmci_env()->get_site_Mark_id(site); if (id_obj.is_non_null()) { if (!jvmci_env()->is_boxing_object(T_INT, id_obj)) { JVMCI_ERROR_0("expected Integer id, got %s", jvmci_env()->klass_name(id_obj)); } jint id = jvmci_env()->get_boxed_value(T_INT, id_obj).i; switch (id) { case INVOKEINTERFACE: case INVOKEVIRTUAL: trampoline_stubs++; break; case INVOKESTATIC: case INVOKESPECIAL: static_call_stubs++; trampoline_stubs++; break; default: break; } } } #if INCLUDE_AOT if (UseAOT && jvmci_env()->isa_site_Call(site)) { JVMCIObject target = jvmci_env()-> get_site_Call_target(site); if (!jvmci_env()->isa_HotSpotForeignCallTarget(target)) { // Add far aot trampolines. aot_call_stubs++; } } #endif } } 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 JVMCI::CodeInstallResult CodeInstaller::initialize_buffer(CodeBuffer& buffer, bool check_size, JVMCI_TRAPS) { HandleMark hm; JVMCIObjectArray sites = this->sites(); int locs_buffer_size = JVMCIENV->get_length(sites) * (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(JVMCI_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 JVMCI::code_too_large; } buffer.initialize(total_size, locs_buffer_size); if (buffer.blob() == NULL) { return JVMCI::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; JVMCIENV->copy_bytes_to(data_section(), (jbyte*) _constants->start(), 0, _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"); JVMCIENV->copy_bytes_to(code(), (jbyte*) _instructions->start(), 0, _code_size); _instructions->set_end(end_pc); for (int i = 0; i < JVMCIENV->get_length(data_section_patches()); i++) { // HandleMark hm(THREAD); JVMCIObject patch = JVMCIENV->get_object_at(data_section_patches(), i); if (patch.is_null()) { JVMCI_THROW_(NullPointerException, JVMCI::ok); } JVMCIObject reference = jvmci_env()->get_site_DataPatch_reference(patch); if (reference.is_null()) { JVMCI_THROW_(NullPointerException, JVMCI::ok); } if (!jvmci_env()->isa_site_ConstantReference(reference)) { JVMCI_ERROR_OK("invalid patch in data section: %s", jvmci_env()->klass_name(reference)); } JVMCIObject constant = jvmci_env()->get_site_ConstantReference_constant(reference); if (constant.is_null()) { JVMCI_THROW_(NullPointerException, JVMCI::ok); } address dest = _constants->start() + jvmci_env()->get_site_Site_pcOffset(patch); if (jvmci_env()->isa_HotSpotMetaspaceConstantImpl(constant)) { if (jvmci_env()->get_HotSpotMetaspaceConstantImpl_compressed(constant)) { #ifdef _LP64 *((narrowKlass*) dest) = record_narrow_metadata_reference(_constants, dest, constant, JVMCI_CHECK_OK); #else JVMCI_ERROR_OK("unexpected compressed Klass* in 32-bit mode"); #endif } else { *((void**) dest) = record_metadata_reference(_constants, dest, constant, JVMCI_CHECK_OK); } } else if (jvmci_env()->isa_HotSpotObjectConstantImpl(constant)) { Handle obj = jvmci_env()->asConstant(constant, JVMCI_CHECK_OK); jobject value = JNIHandles::make_local(obj()); int oop_index = _oop_recorder->find_index(value); if (jvmci_env()->get_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", jvmci_env()->klass_name(constant)); } } jint last_pc_offset = -1; for (int i = 0; i < JVMCIENV->get_length(sites); i++) { // HandleMark hm(THREAD); JVMCIObject site = JVMCIENV->get_object_at(sites, i); if (site.is_null()) { JVMCI_THROW_(NullPointerException, JVMCI::ok); } jint pc_offset = jvmci_env()->get_site_Site_pcOffset(site); if (jvmci_env()->isa_site_Call(site)) { TRACE_jvmci_4("call at %i", pc_offset); site_Call(buffer, pc_offset, site, JVMCI_CHECK_OK); } else if (jvmci_env()->isa_site_Infopoint(site)) { // three reasons for infopoints denote actual safepoints JVMCIObject reason = jvmci_env()->get_site_Infopoint_reason(site); if (JVMCIENV->equals(reason, jvmci_env()->get_site_InfopointReason_SAFEPOINT()) || JVMCIENV->equals(reason, jvmci_env()->get_site_InfopointReason_CALL()) || JVMCIENV->equals(reason, jvmci_env()->get_site_InfopointReason_IMPLICIT_EXCEPTION())) { TRACE_jvmci_4("safepoint at %i", pc_offset); site_Safepoint(buffer, pc_offset, site, JVMCI_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, JVMCI_CHECK_OK); } } else if (jvmci_env()->isa_site_DataPatch(site)) { TRACE_jvmci_4("datapatch at %i", pc_offset); site_DataPatch(buffer, pc_offset, site, JVMCI_CHECK_OK); } else if (jvmci_env()->isa_site_Mark(site)) { TRACE_jvmci_4("mark at %i", pc_offset); site_Mark(buffer, pc_offset, site, JVMCI_CHECK_OK); } else if (jvmci_env()->isa_site_ExceptionHandler(site)) { TRACE_jvmci_4("exceptionhandler at %i", pc_offset); site_ExceptionHandler(pc_offset, site); } else { JVMCI_ERROR_OK("unexpected site subclass: %s", jvmci_env()->klass_name(site)); } last_pc_offset = pc_offset; JavaThread* thread = JavaThread::current(); if (SafepointMechanism::should_block(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().is_non_null()) { for (int i = 0; i < JVMCIENV->get_length(comments()); i++) { JVMCIObject comment = JVMCIENV->get_object_at(comments(), i); assert(jvmci_env()->isa_HotSpotCompiledCode_Comment(comment), "cce"); jint offset = jvmci_env()->get_HotSpotCompiledCode_Comment_pcOffset(comment); const char* text = jvmci_env()->as_utf8_string(jvmci_env()->get_HotSpotCompiledCode_Comment_text(comment)); buffer.block_comment(offset, text); } } #endif return JVMCI::ok; } void CodeInstaller::assumption_NoFinalizableSubclass(JVMCIObject assumption) { JVMCIObject receiverType_handle = jvmci_env()->get_Assumptions_NoFinalizableSubclass_receiverType(assumption); Klass* receiverType = jvmci_env()->asKlass(receiverType_handle); _dependencies->assert_has_no_finalizable_subclasses(receiverType); } void CodeInstaller::assumption_ConcreteSubtype(JVMCIObject assumption) { JVMCIObject context_handle = jvmci_env()->get_Assumptions_ConcreteSubtype_context(assumption); JVMCIObject subtype_handle = jvmci_env()->get_Assumptions_ConcreteSubtype_subtype(assumption); Klass* context = jvmci_env()->asKlass(context_handle); Klass* subtype = jvmci_env()->asKlass(subtype_handle); assert(context->is_abstract(), ""); _dependencies->assert_abstract_with_unique_concrete_subtype(context, subtype); } void CodeInstaller::assumption_LeafType(JVMCIObject assumption) { JVMCIObject context_handle = jvmci_env()->get_Assumptions_LeafType_context(assumption); Klass* context = jvmci_env()->asKlass(context_handle); _dependencies->assert_leaf_type(context); } void CodeInstaller::assumption_ConcreteMethod(JVMCIObject assumption) { JVMCIObject impl_handle = jvmci_env()->get_Assumptions_ConcreteMethod_impl(assumption); JVMCIObject context_handle = jvmci_env()->get_Assumptions_ConcreteMethod_context(assumption); methodHandle impl = jvmci_env()->asMethod(impl_handle); Klass* context = jvmci_env()->asKlass(context_handle); _dependencies->assert_unique_concrete_method(context, impl()); } void CodeInstaller::assumption_CallSiteTargetValue(JVMCIObject assumption, JVMCI_TRAPS) { JVMCIObject callSiteConstant = jvmci_env()->get_Assumptions_CallSiteTargetValue_callSite(assumption); Handle callSite = jvmci_env()->asConstant(callSiteConstant, JVMCI_CHECK); JVMCIObject methodConstant = jvmci_env()->get_Assumptions_CallSiteTargetValue_methodHandle(assumption); Handle methodHandle = jvmci_env()->asConstant(methodConstant, JVMCI_CHECK); _dependencies->assert_call_site_target_value(callSite(), methodHandle()); } void CodeInstaller::site_ExceptionHandler(jint pc_offset, JVMCIObject exc) { jint handler_offset = jvmci_env()->get_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* CodeInstaller::record_virtual_objects(JVMCIObject debug_info, JVMCI_TRAPS) { JVMCIObjectArray virtualObjects = jvmci_env()->get_DebugInfo_virtualObjectMapping(debug_info); if (virtualObjects.is_null()) { return NULL; } GrowableArray* objects = new GrowableArray(JVMCIENV->get_length(virtualObjects), JVMCIENV->get_length(virtualObjects), NULL); // Create the unique ObjectValues for (int i = 0; i < JVMCIENV->get_length(virtualObjects); i++) { // HandleMark hm(THREAD); JVMCIObject value = JVMCIENV->get_object_at(virtualObjects, i); int id = jvmci_env()->get_VirtualObject_id(value); JVMCIObject type = jvmci_env()->get_VirtualObject_type(value); Klass* klass = jvmci_env()->asKlass(type); oop javaMirror = klass->java_mirror(); 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 < JVMCIENV->get_length(virtualObjects); i++) { // HandleMark hm(THREAD); JVMCIObject value = JVMCIENV->get_object_at(virtualObjects, i); int id = jvmci_env()->get_VirtualObject_id(value); record_object_value(objects->at(id)->as_ObjectValue(), value, objects, JVMCI_CHECK_NULL); } _debug_recorder->dump_object_pool(objects); return objects; } void CodeInstaller::record_scope(jint pc_offset, JVMCIObject debug_info, ScopeMode scope_mode, bool return_oop, JVMCI_TRAPS) { JVMCIObject position = jvmci_env()->get_DebugInfo_bytecodePosition(debug_info); if (position.is_null()) { // Stubs do not record scope info, just oop maps return; } GrowableArray* objectMapping; if (scope_mode == CodeInstaller::FullFrame) { objectMapping = record_virtual_objects(debug_info, JVMCI_CHECK); } else { objectMapping = NULL; } record_scope(pc_offset, position, scope_mode, objectMapping, return_oop, JVMCI_CHECK); } int CodeInstaller::map_jvmci_bci(int bci) { if (bci < 0) { if (bci == jvmci_env()->get_BytecodeFrame_BEFORE_BCI()) { return BeforeBci; } else if (bci == jvmci_env()->get_BytecodeFrame_AFTER_BCI()) { return AfterBci; } else if (bci == jvmci_env()->get_BytecodeFrame_UNWIND_BCI()) { return UnwindBci; } else if (bci == jvmci_env()->get_BytecodeFrame_AFTER_EXCEPTION_BCI()) { return AfterExceptionBci; } else if (bci == jvmci_env()->get_BytecodeFrame_UNKNOWN_BCI()) { return UnknownBci; } else if (bci == jvmci_env()->get_BytecodeFrame_INVALID_FRAMESTATE_BCI()) { return InvalidFrameStateBci; } ShouldNotReachHere(); } return bci; } void CodeInstaller::record_scope(jint pc_offset, JVMCIObject position, ScopeMode scope_mode, GrowableArray* objects, bool return_oop, JVMCI_TRAPS) { JVMCIObject frame; if (scope_mode == CodeInstaller::FullFrame) { if (!jvmci_env()->isa_BytecodeFrame(position)) { JVMCI_ERROR("Full frame expected for debug info at %i", pc_offset); } frame = position; } JVMCIObject caller_frame = jvmci_env()->get_BytecodePosition_caller(position); if (caller_frame.is_non_null()) { record_scope(pc_offset, caller_frame, scope_mode, objects, return_oop, JVMCI_CHECK); } JVMCIObject hotspot_method = jvmci_env()->get_BytecodePosition_method(position); Method* method = jvmci_env()->asMethod(hotspot_method); jint bci = map_jvmci_bci(jvmci_env()->get_BytecodePosition_bci(position)); if (bci == jvmci_env()->get_BytecodeFrame_BEFORE_BCI()) { bci = SynchronizationEntryBCI; } 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.is_non_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.is_non_null()) { reexecute = (jvmci_env()->get_BytecodeFrame_duringCall(frame) == JNI_FALSE); } } } DebugToken* locals_token = NULL; DebugToken* expressions_token = NULL; DebugToken* monitors_token = NULL; bool throw_exception = false; if (frame.is_non_null()) { jint local_count = jvmci_env()->get_BytecodeFrame_numLocals(frame); jint expression_count = jvmci_env()->get_BytecodeFrame_numStack(frame); jint monitor_count = jvmci_env()->get_BytecodeFrame_numLocks(frame); JVMCIObjectArray values = jvmci_env()->get_BytecodeFrame_values(frame); JVMCIObjectArray slotKinds = jvmci_env()->get_BytecodeFrame_slotKinds(frame); if (values.is_null() || slotKinds.is_null()) { JVMCI_THROW(NullPointerException); } if (local_count + expression_count + monitor_count != JVMCIENV->get_length(values)) { JVMCI_ERROR("unexpected values length %d in scope (%d locals, %d expressions, %d monitors)", JVMCIENV->get_length(values), local_count, expression_count, monitor_count); } if (local_count + expression_count != JVMCIENV->get_length(slotKinds)) { JVMCI_ERROR("unexpected slotKinds length %d in scope (%d locals, %d expressions)", JVMCIENV->get_length(slotKinds), local_count, expression_count); } GrowableArray* locals = local_count > 0 ? new GrowableArray (local_count) : NULL; GrowableArray* expressions = expression_count > 0 ? new GrowableArray (expression_count) : NULL; GrowableArray* monitors = monitor_count > 0 ? new GrowableArray (monitor_count) : NULL; TRACE_jvmci_2("Scope at bci %d with %d values", bci, JVMCIENV->get_length(values)); TRACE_jvmci_2("%d locals %d expressions, %d monitors", local_count, expression_count, monitor_count); for (jint i = 0; i < JVMCIENV->get_length(values); i++) { // HandleMark hm(THREAD); ScopeValue* second = NULL; JVMCIObject value = JVMCIENV->get_object_at(values, i); if (i < local_count) { BasicType type = jvmci_env()->kindToBasicType(JVMCIENV->get_object_at(slotKinds, i), JVMCI_CHECK); ScopeValue* first = get_scope_value(value, type, objects, second, JVMCI_CHECK); if (second != NULL) { locals->append(second); } locals->append(first); } else if (i < local_count + expression_count) { BasicType type = jvmci_env()->kindToBasicType(JVMCIENV->get_object_at(slotKinds, i), JVMCI_CHECK); ScopeValue* first = get_scope_value(value, type, objects, second, JVMCI_CHECK); if (second != NULL) { expressions->append(second); } expressions->append(first); } else { MonitorValue *monitor = get_monitor_value(value, objects, JVMCI_CHECK); monitors->append(monitor); } if (second != NULL) { i++; if (i >= JVMCIENV->get_length(values) || !JVMCIENV->equals(JVMCIENV->get_object_at(values, i), jvmci_env()->get_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 = jvmci_env()->get_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, JVMCIObject site, JVMCI_TRAPS) { JVMCIObject debug_info = jvmci_env()->get_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, JVMCI_CHECK); _debug_recorder->add_safepoint(pc_offset, map); record_scope(pc_offset, debug_info, CodeInstaller::FullFrame, JVMCI_CHECK); _debug_recorder->end_safepoint(pc_offset); } void CodeInstaller::site_Infopoint(CodeBuffer& buffer, jint pc_offset, JVMCIObject site, JVMCI_TRAPS) { JVMCIObject debug_info = jvmci_env()->get_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, JVMCI_CHECK); _debug_recorder->end_non_safepoint(pc_offset); } void CodeInstaller::site_Call(CodeBuffer& buffer, jint pc_offset, JVMCIObject site, JVMCI_TRAPS) { JVMCIObject target = jvmci_env()->get_site_Call_target(site); JVMCIObject hotspot_method; // JavaMethod JVMCIObject foreign_call; if (jvmci_env()->isa_HotSpotForeignCallTarget(target)) { foreign_call = target; } else { hotspot_method = target; } JVMCIObject debug_info = jvmci_env()->get_site_Infopoint_debugInfo(site); assert(hotspot_method.is_non_null() ^ foreign_call.is_non_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, JVMCI_CHECK); if (debug_info.is_non_null()) { OopMap *map = create_oop_map(debug_info, JVMCI_CHECK); _debug_recorder->add_safepoint(next_pc_offset, map); bool return_oop = hotspot_method.is_non_null() && jvmci_env()->asMethod(hotspot_method)->is_returning_oop(); record_scope(next_pc_offset, debug_info, CodeInstaller::FullFrame, return_oop, JVMCI_CHECK); } if (foreign_call.is_non_null()) { jlong foreign_call_destination = jvmci_env()->get_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, JVMCI_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, JVMCI_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.is_non_null()) { _debug_recorder->end_safepoint(next_pc_offset); } } void CodeInstaller::site_DataPatch(CodeBuffer& buffer, jint pc_offset, JVMCIObject site, JVMCI_TRAPS) { JVMCIObject reference = jvmci_env()->get_site_DataPatch_reference(site); if (reference.is_null()) { JVMCI_THROW(NullPointerException); } else if (jvmci_env()->isa_site_ConstantReference(reference)) { JVMCIObject constant = jvmci_env()->get_site_ConstantReference_constant(reference); if (constant.is_null()) { JVMCI_THROW(NullPointerException); } else if (jvmci_env()->isa_DirectHotSpotObjectConstantImpl(constant)) { if (!JVMCIENV->is_hotspot()) { JVMCIObject string = JVMCIENV->call_HotSpotJVMCIRuntime_callToString(constant, JVMCI_CHECK); const char* to_string = JVMCIENV->as_utf8_string(string); JVMCI_THROW_MSG(IllegalArgumentException, err_msg("Direct object constant reached the backend: %s", to_string)); } if (!_immutable_pic_compilation) { // Do not patch during PIC compilation. pd_patch_OopConstant(pc_offset, constant, JVMCI_CHECK); } } else if (jvmci_env()->isa_IndirectHotSpotObjectConstantImpl(constant)) { if (!_immutable_pic_compilation) { // Do not patch during PIC compilation. pd_patch_OopConstant(pc_offset, constant, JVMCI_CHECK); } } else if (jvmci_env()->isa_HotSpotMetaspaceConstantImpl(constant)) { if (!_immutable_pic_compilation) { pd_patch_MetaspaceConstant(pc_offset, constant, JVMCI_CHECK); } #if INCLUDE_AOT } else if (jvmci_env()->isa_HotSpotSentinelConstant(constant)) { if (!_immutable_pic_compilation) { JVMCI_ERROR("sentinel constant not supported for normal compiles: %s", jvmci_env()->klass_name(constant)); } #endif } else { JVMCI_ERROR("unknown constant type in data patch: %s", jvmci_env()->klass_name(constant)); } } else if (jvmci_env()->isa_site_DataSectionReference(reference)) { int data_offset = jvmci_env()->get_site_DataSectionReference_offset(reference); if (0 <= data_offset && data_offset < _constants_size) { pd_patch_DataSectionReference(pc_offset, data_offset, JVMCI_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", jvmci_env()->klass_name(reference)); } } void CodeInstaller::site_Mark(CodeBuffer& buffer, jint pc_offset, JVMCIObject site, JVMCI_TRAPS) { JVMCIObject id_obj = jvmci_env()->get_site_Mark_id(site); if (id_obj.is_non_null()) { if (!jvmci_env()->is_boxing_object(T_INT, id_obj)) { JVMCI_ERROR("expected Integer id, got %s", jvmci_env()->klass_name(id_obj)); } jint id = jvmci_env()->get_boxed_value(T_INT, id_obj).i; 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 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, JVMCI_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; } } }