1 /*
2 * Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 package sun.jvm.hotspot.runtime;
26
27 import java.util.Observer;
28 import sun.jvm.hotspot.types.TypeDataBase;
29
30
31 /** Encapsulates the BasicType enum in globalDefinitions.hpp in the
32 VM. */
33
34 public class BasicType {
35 public static final BasicType T_BOOLEAN = new BasicType();
36 public static final BasicType T_CHAR = new BasicType();
37 public static final BasicType T_FLOAT = new BasicType();
38 public static final BasicType T_DOUBLE = new BasicType();
39 public static final BasicType T_BYTE = new BasicType();
40 public static final BasicType T_SHORT = new BasicType();
41 public static final BasicType T_INT = new BasicType();
42 public static final BasicType T_LONG = new BasicType();
43 public static final BasicType T_OBJECT = new BasicType();
44 public static final BasicType T_ARRAY = new BasicType();
45 public static final BasicType T_VOID = new BasicType();
46 public static final BasicType T_ADDRESS = new BasicType();
47 public static final BasicType T_NARROWOOP = new BasicType();
48 public static final BasicType T_METADATA = new BasicType();
49 public static final BasicType T_NARROWKLASS = new BasicType();
50 public static final BasicType T_CONFLICT = new BasicType();
51 public static final BasicType T_ILLEGAL = new BasicType();
52
53 static {
54 VM.registerVMInitializedObserver(
55 (o, d) -> initialize(VM.getVM().getTypeDataBase()));
56 }
57
58 private static synchronized void initialize(TypeDataBase db) {
59 T_BOOLEAN.setType(db.lookupIntConstant("T_BOOLEAN").intValue());
60 T_CHAR.setType(db.lookupIntConstant("T_CHAR").intValue());
61 T_FLOAT.setType(db.lookupIntConstant("T_FLOAT").intValue());
62 T_DOUBLE.setType(db.lookupIntConstant("T_DOUBLE").intValue());
63 T_BYTE.setType(db.lookupIntConstant("T_BYTE").intValue());
64 T_SHORT.setType(db.lookupIntConstant("T_SHORT").intValue());
65 T_INT.setType(db.lookupIntConstant("T_INT").intValue());
66 T_LONG.setType(db.lookupIntConstant("T_LONG").intValue());
67 T_OBJECT.setType(db.lookupIntConstant("T_OBJECT").intValue());
68 T_ARRAY.setType(db.lookupIntConstant("T_ARRAY").intValue());
69 T_VOID.setType(db.lookupIntConstant("T_VOID").intValue());
70 T_ADDRESS.setType(db.lookupIntConstant("T_ADDRESS").intValue());
71 T_NARROWOOP.setType(db.lookupIntConstant("T_NARROWOOP").intValue());
72 T_METADATA.setType(db.lookupIntConstant("T_METADATA").intValue());
73 T_NARROWKLASS.setType(db.lookupIntConstant("T_NARROWKLASS").intValue());
74 T_CONFLICT.setType(db.lookupIntConstant("T_CONFLICT").intValue());
75 T_ILLEGAL.setType(db.lookupIntConstant("T_ILLEGAL").intValue());
76 }
77
78 public static int getTBoolean() {
79 return T_BOOLEAN.getType();
80 }
81
82 public static int getTChar() {
83 return T_CHAR.getType();
84 }
85
86 public static int getTFloat() {
87 return T_FLOAT.getType();
88 }
89
90 public static int getTDouble() {
91 return T_DOUBLE.getType();
92 }
93
94 public static int getTByte() {
95 return T_BYTE.getType();
96 }
97
98 public static int getTShort() {
99 return T_SHORT.getType();
100 }
101
102 public static int getTInt() {
103 return T_INT.getType();
104 }
105
106 public static int getTLong() {
107 return T_LONG.getType();
108 }
109
110 public static int getTObject() {
111 return T_OBJECT.getType();
112 }
113
114 public static int getTArray() {
115 return T_ARRAY.getType();
116 }
117
118 public static int getTVoid() {
119 return T_VOID.getType();
120 }
121
122 public static int getTAddress() {
123 return T_ADDRESS.getType();
124 }
125
126 public static int getTNarrowOop() {
127 return T_NARROWOOP.getType();
128 }
129
130 public static int getTMetadata() {
131 return T_METADATA.getType();
132 }
133
134 public static int getTNarrowKlass() {
135 return T_NARROWKLASS.getType();
136 }
137
138 /** For stack value type with conflicting contents */
139 public static int getTConflict() {
140 return T_CONFLICT.getType();
141 }
142
143 public static int getTIllegal() {
144 return T_ILLEGAL.getType();
145 }
146
147 public static BasicType intToBasicType(int i) {
148 if (i == T_BOOLEAN.getType()) {
149 return T_BOOLEAN;
150 } else if (i == T_CHAR.getType()) {
151 return T_CHAR;
152 } else if (i == T_FLOAT.getType()) {
153 return T_FLOAT;
154 } else if (i == T_DOUBLE.getType()) {
155 return T_DOUBLE;
156 } else if (i == T_BYTE.getType()) {
157 return T_BYTE;
158 } else if (i == T_SHORT.getType()) {
159 return T_SHORT;
160 } else if (i == T_INT.getType()) {
161 return T_INT;
162 } else if (i == T_LONG.getType()) {
163 return T_LONG;
164 } else if (i == T_OBJECT.getType()) {
165 return T_OBJECT;
166 } else if (i == T_ARRAY.getType()) {
167 return T_ARRAY;
168 } else if (i == T_VOID.getType()) {
169 return T_VOID;
170 } else if (i == T_ADDRESS.getType()) {
171 return T_ADDRESS;
172 } else if (i == T_NARROWOOP.getType()) {
173 return T_NARROWOOP;
174 } else if (i == T_METADATA.getType()) {
175 return T_METADATA;
176 } else if (i == T_NARROWKLASS.getType()) {
177 return T_NARROWKLASS;
178 } else {
179 return T_ILLEGAL;
180 }
181 }
182
183 public static BasicType charToBasicType(char c) {
184 switch( c ) {
185 case 'B': return T_BYTE;
186 case 'C': return T_CHAR;
187 case 'D': return T_DOUBLE;
188 case 'F': return T_FLOAT;
189 case 'I': return T_INT;
190 case 'J': return T_LONG;
191 case 'S': return T_SHORT;
192 case 'Z': return T_BOOLEAN;
193 case 'V': return T_VOID;
194 case 'L': return T_OBJECT;
195 case '[': return T_ARRAY;
196 }
197 return T_ILLEGAL;
198 }
199
200 public static int charToType(char c) {
201 return charToBasicType(c).getType();
202 }
203
204 public int getType() {
205 return type;
206 }
207
208 public String getName() {
209 if (type == T_BOOLEAN.getType()) {
210 return "boolean";
211 } else if (type == T_CHAR.getType()) {
212 return "char";
213 } else if (type == T_FLOAT.getType()) {
214 return "float";
215 } else if (type == T_DOUBLE.getType()) {
216 return "double";
217 } else if (type == T_BYTE.getType()) {
218 return "byte";
219 } else if (type == T_SHORT.getType()) {
220 return "short";
221 } else if (type == T_INT.getType()) {
222 return "int";
223 } else if (type == T_LONG.getType()) {
224 return "long";
225 } else if (type == T_OBJECT.getType()) {
226 return "object";
227 } else if (type == T_ARRAY.getType()) {
228 return "array";
229 } else if (type == T_VOID.getType()) {
230 return "void";
231 } else if (type == T_ADDRESS.getType()) {
232 return "address";
233 } else if (type == T_NARROWOOP.getType()) {
234 return "narrow oop";
235 } else if (type == T_METADATA.getType()) {
236 return "metadata";
237 } else if (type == T_NARROWKLASS.getType()) {
238 return "narrow klass";
239 } else if (type == T_CONFLICT.getType()) {
240 return "conflict";
241 } else {
242 return "ILLEGAL TYPE";
243 }
244 }
245
246 //-- Internals only below this point
247 private BasicType() {
248 }
249
250 private void setType(int type) {
251 this.type = type;
252 }
253
254 private int type;
255 }