| /* |
| * Copyright (c) 2000, 2015, 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 "ci/ciEnv.hpp" |
| #include "ci/ciType.hpp" |
| #include "ci/ciUtilities.hpp" |
| #include "classfile/systemDictionary.hpp" |
| #include "oops/oop.inline.hpp" |
| |
| ciType* ciType::_basic_types[T_CONFLICT+1]; |
| |
| // ciType |
| // |
| // This class represents either a class (T_OBJECT), array (T_ARRAY), |
| // or one of the primitive types such as T_INT. |
| |
| // ------------------------------------------------------------------ |
| // ciType::ciType |
| // |
| ciType::ciType(BasicType basic_type) : ciMetadata() { |
| assert(basic_type >= T_BOOLEAN && basic_type <= T_CONFLICT, "range check"); |
| _basic_type = basic_type; |
| } |
| |
| ciType::ciType(KlassHandle k) : ciMetadata(k()) { |
| _basic_type = k()->is_array_klass() ? T_ARRAY : T_OBJECT; |
| } |
| |
| |
| // ------------------------------------------------------------------ |
| // ciType::is_subtype_of |
| // |
| bool ciType::is_subtype_of(ciType* type) { |
| if (this == type) return true; |
| if (is_klass() && type->is_klass()) |
| return this->as_klass()->is_subtype_of(type->as_klass()); |
| return false; |
| } |
| |
| // ------------------------------------------------------------------ |
| // ciType::name |
| // |
| // Return the name of this type |
| const char* ciType::name() { |
| if (is_primitive_type()) { |
| return type2name(basic_type()); |
| } else { |
| assert(is_klass(), "must be"); |
| return as_klass()->name()->as_utf8(); |
| } |
| } |
| |
| // ------------------------------------------------------------------ |
| // ciType::print_impl |
| // |
| // Implementation of the print method. |
| void ciType::print_impl(outputStream* st) { |
| st->print(" type="); |
| print_name_on(st); |
| } |
| |
| // ------------------------------------------------------------------ |
| // ciType::print_name |
| // |
| // Print the name of this type |
| void ciType::print_name_on(outputStream* st) { |
| ResourceMark rm; |
| st->print("%s", name()); |
| } |
| |
| |
| |
| // ------------------------------------------------------------------ |
| // ciType::java_mirror |
| // |
| ciInstance* ciType::java_mirror() { |
| VM_ENTRY_MARK; |
| return CURRENT_THREAD_ENV->get_instance(Universe::java_mirror(basic_type())); |
| } |
| |
| // ------------------------------------------------------------------ |
| // ciType::box_klass |
| // |
| ciKlass* ciType::box_klass() { |
| if (!is_primitive_type()) return this->as_klass(); // reference types are "self boxing" |
| |
| // Void is "boxed" with a null. |
| if (basic_type() == T_VOID) return NULL; |
| |
| VM_ENTRY_MARK; |
| return CURRENT_THREAD_ENV->get_instance_klass(SystemDictionary::box_klass(basic_type())); |
| } |
| |
| |
| // ------------------------------------------------------------------ |
| // ciType::make |
| // |
| // Produce the ciType for a given primitive BasicType. |
| // As a bonus, produce the right reference type for T_OBJECT. |
| // Does not work on T_ARRAY. |
| ciType* ciType::make(BasicType t) { |
| // short, etc. |
| // Note: Bare T_ADDRESS means a raw pointer type, not a return_address. |
| assert((uint)t < T_CONFLICT+1, "range check"); |
| if (t == T_OBJECT) return ciEnv::_Object_klass; // java/lang/Object |
| assert(_basic_types[t] != NULL, "domain check"); |
| return _basic_types[t]; |
| } |
| |
| // ciReturnAddress |
| // |
| // This class represents the type of a specific return address in the |
| // bytecodes. |
| |
| // ------------------------------------------------------------------ |
| // ciReturnAddress::ciReturnAddress |
| // |
| ciReturnAddress::ciReturnAddress(int bci) : ciType(T_ADDRESS) { |
| assert(0 <= bci, "bci cannot be negative"); |
| _bci = bci; |
| } |
| |
| // ------------------------------------------------------------------ |
| // ciReturnAddress::print_impl |
| // |
| // Implementation of the print method. |
| void ciReturnAddress::print_impl(outputStream* st) { |
| st->print(" bci=%d", _bci); |
| } |
| |
| // ------------------------------------------------------------------ |
| // ciReturnAddress::make |
| ciReturnAddress* ciReturnAddress::make(int bci) { |
| GUARDED_VM_ENTRY(return CURRENT_ENV->get_return_address(bci);) |
| } |