Wed, 03 Jul 2019 20:42:37 +0800
Merge
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | * |
aoqi@0 | 23 | */ |
aoqi@0 | 24 | |
aoqi@0 | 25 | #include "precompiled.hpp" |
aoqi@0 | 26 | #include "ci/ciEnv.hpp" |
aoqi@0 | 27 | #include "ci/ciType.hpp" |
aoqi@0 | 28 | #include "ci/ciUtilities.hpp" |
aoqi@0 | 29 | #include "classfile/systemDictionary.hpp" |
aoqi@0 | 30 | #include "oops/oop.inline.hpp" |
aoqi@0 | 31 | |
aoqi@0 | 32 | ciType* ciType::_basic_types[T_CONFLICT+1]; |
aoqi@0 | 33 | |
aoqi@0 | 34 | // ciType |
aoqi@0 | 35 | // |
aoqi@0 | 36 | // This class represents either a class (T_OBJECT), array (T_ARRAY), |
aoqi@0 | 37 | // or one of the primitive types such as T_INT. |
aoqi@0 | 38 | |
aoqi@0 | 39 | // ------------------------------------------------------------------ |
aoqi@0 | 40 | // ciType::ciType |
aoqi@0 | 41 | // |
aoqi@0 | 42 | ciType::ciType(BasicType basic_type) : ciMetadata() { |
aoqi@0 | 43 | assert(basic_type >= T_BOOLEAN && basic_type <= T_CONFLICT, "range check"); |
aoqi@0 | 44 | _basic_type = basic_type; |
aoqi@0 | 45 | } |
aoqi@0 | 46 | |
aoqi@0 | 47 | ciType::ciType(KlassHandle k) : ciMetadata(k()) { |
aoqi@0 | 48 | _basic_type = k()->oop_is_array() ? T_ARRAY : T_OBJECT; |
aoqi@0 | 49 | } |
aoqi@0 | 50 | |
aoqi@0 | 51 | |
aoqi@0 | 52 | // ------------------------------------------------------------------ |
aoqi@0 | 53 | // ciType::is_subtype_of |
aoqi@0 | 54 | // |
aoqi@0 | 55 | bool ciType::is_subtype_of(ciType* type) { |
aoqi@0 | 56 | if (this == type) return true; |
aoqi@0 | 57 | if (is_klass() && type->is_klass()) |
aoqi@0 | 58 | return this->as_klass()->is_subtype_of(type->as_klass()); |
aoqi@0 | 59 | return false; |
aoqi@0 | 60 | } |
aoqi@0 | 61 | |
aoqi@0 | 62 | // ------------------------------------------------------------------ |
aoqi@0 | 63 | // ciType::name |
aoqi@0 | 64 | // |
aoqi@0 | 65 | // Return the name of this type |
aoqi@0 | 66 | const char* ciType::name() { |
aoqi@0 | 67 | if (is_primitive_type()) { |
aoqi@0 | 68 | return type2name(basic_type()); |
aoqi@0 | 69 | } else { |
aoqi@0 | 70 | assert(is_klass(), "must be"); |
aoqi@0 | 71 | return as_klass()->name()->as_utf8(); |
aoqi@0 | 72 | } |
aoqi@0 | 73 | } |
aoqi@0 | 74 | |
aoqi@0 | 75 | // ------------------------------------------------------------------ |
aoqi@0 | 76 | // ciType::print_impl |
aoqi@0 | 77 | // |
aoqi@0 | 78 | // Implementation of the print method. |
aoqi@0 | 79 | void ciType::print_impl(outputStream* st) { |
aoqi@0 | 80 | st->print(" type="); |
aoqi@0 | 81 | print_name_on(st); |
aoqi@0 | 82 | } |
aoqi@0 | 83 | |
aoqi@0 | 84 | // ------------------------------------------------------------------ |
aoqi@0 | 85 | // ciType::print_name |
aoqi@0 | 86 | // |
aoqi@0 | 87 | // Print the name of this type |
aoqi@0 | 88 | void ciType::print_name_on(outputStream* st) { |
aoqi@0 | 89 | ResourceMark rm; |
aoqi@0 | 90 | st->print("%s", name()); |
aoqi@0 | 91 | } |
aoqi@0 | 92 | |
aoqi@0 | 93 | |
aoqi@0 | 94 | |
aoqi@0 | 95 | // ------------------------------------------------------------------ |
aoqi@0 | 96 | // ciType::java_mirror |
aoqi@0 | 97 | // |
aoqi@0 | 98 | ciInstance* ciType::java_mirror() { |
aoqi@0 | 99 | VM_ENTRY_MARK; |
aoqi@0 | 100 | return CURRENT_THREAD_ENV->get_instance(Universe::java_mirror(basic_type())); |
aoqi@0 | 101 | } |
aoqi@0 | 102 | |
aoqi@0 | 103 | // ------------------------------------------------------------------ |
aoqi@0 | 104 | // ciType::box_klass |
aoqi@0 | 105 | // |
aoqi@0 | 106 | ciKlass* ciType::box_klass() { |
aoqi@0 | 107 | if (!is_primitive_type()) return this->as_klass(); // reference types are "self boxing" |
aoqi@0 | 108 | |
aoqi@0 | 109 | // Void is "boxed" with a null. |
aoqi@0 | 110 | if (basic_type() == T_VOID) return NULL; |
aoqi@0 | 111 | |
aoqi@0 | 112 | VM_ENTRY_MARK; |
aoqi@0 | 113 | return CURRENT_THREAD_ENV->get_instance_klass(SystemDictionary::box_klass(basic_type())); |
aoqi@0 | 114 | } |
aoqi@0 | 115 | |
aoqi@0 | 116 | |
aoqi@0 | 117 | // ------------------------------------------------------------------ |
aoqi@0 | 118 | // ciType::make |
aoqi@0 | 119 | // |
aoqi@0 | 120 | // Produce the ciType for a given primitive BasicType. |
aoqi@0 | 121 | // As a bonus, produce the right reference type for T_OBJECT. |
aoqi@0 | 122 | // Does not work on T_ARRAY. |
aoqi@0 | 123 | ciType* ciType::make(BasicType t) { |
aoqi@0 | 124 | // short, etc. |
aoqi@0 | 125 | // Note: Bare T_ADDRESS means a raw pointer type, not a return_address. |
aoqi@0 | 126 | assert((uint)t < T_CONFLICT+1, "range check"); |
aoqi@0 | 127 | if (t == T_OBJECT) return ciEnv::_Object_klass; // java/lang/Object |
aoqi@0 | 128 | assert(_basic_types[t] != NULL, "domain check"); |
aoqi@0 | 129 | return _basic_types[t]; |
aoqi@0 | 130 | } |
aoqi@0 | 131 | |
aoqi@0 | 132 | // ciReturnAddress |
aoqi@0 | 133 | // |
aoqi@0 | 134 | // This class represents the type of a specific return address in the |
aoqi@0 | 135 | // bytecodes. |
aoqi@0 | 136 | |
aoqi@0 | 137 | // ------------------------------------------------------------------ |
aoqi@0 | 138 | // ciReturnAddress::ciReturnAddress |
aoqi@0 | 139 | // |
aoqi@0 | 140 | ciReturnAddress::ciReturnAddress(int bci) : ciType(T_ADDRESS) { |
aoqi@0 | 141 | assert(0 <= bci, "bci cannot be negative"); |
aoqi@0 | 142 | _bci = bci; |
aoqi@0 | 143 | } |
aoqi@0 | 144 | |
aoqi@0 | 145 | // ------------------------------------------------------------------ |
aoqi@0 | 146 | // ciReturnAddress::print_impl |
aoqi@0 | 147 | // |
aoqi@0 | 148 | // Implementation of the print method. |
aoqi@0 | 149 | void ciReturnAddress::print_impl(outputStream* st) { |
aoqi@0 | 150 | st->print(" bci=%d", _bci); |
aoqi@0 | 151 | } |
aoqi@0 | 152 | |
aoqi@0 | 153 | // ------------------------------------------------------------------ |
aoqi@0 | 154 | // ciReturnAddress::make |
aoqi@0 | 155 | ciReturnAddress* ciReturnAddress::make(int bci) { |
aoqi@0 | 156 | GUARDED_VM_ENTRY(return CURRENT_ENV->get_return_address(bci);) |
aoqi@0 | 157 | } |