1 /*
2 * Copyright (c) 2010, 2013, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package jdk.nashorn.internal.codegen.types;
27
28 import static jdk.internal.org.objectweb.asm.Opcodes.L2D;
29 import static jdk.internal.org.objectweb.asm.Opcodes.L2I;
30 import static jdk.internal.org.objectweb.asm.Opcodes.LADD;
31 import static jdk.internal.org.objectweb.asm.Opcodes.LAND;
32 import static jdk.internal.org.objectweb.asm.Opcodes.LCMP;
33 import static jdk.internal.org.objectweb.asm.Opcodes.LCONST_0;
34 import static jdk.internal.org.objectweb.asm.Opcodes.LCONST_1;
35 import static jdk.internal.org.objectweb.asm.Opcodes.LLOAD;
36 import static jdk.internal.org.objectweb.asm.Opcodes.LMUL;
37 import static jdk.internal.org.objectweb.asm.Opcodes.LOR;
38 import static jdk.internal.org.objectweb.asm.Opcodes.LRETURN;
39 import static jdk.internal.org.objectweb.asm.Opcodes.LSHL;
40 import static jdk.internal.org.objectweb.asm.Opcodes.LSHR;
41 import static jdk.internal.org.objectweb.asm.Opcodes.LSTORE;
42 import static jdk.internal.org.objectweb.asm.Opcodes.LSUB;
43 import static jdk.internal.org.objectweb.asm.Opcodes.LUSHR;
44 import static jdk.internal.org.objectweb.asm.Opcodes.LXOR;
45 import static jdk.nashorn.internal.codegen.CompilerConstants.staticCallNoLookup;
46 import static jdk.nashorn.internal.runtime.JSType.UNDEFINED_LONG;
47 import static jdk.nashorn.internal.runtime.UnwarrantedOptimismException.INVALID_PROGRAM_POINT;
48
49 import jdk.internal.org.objectweb.asm.MethodVisitor;
50 import jdk.nashorn.internal.codegen.CompilerConstants;
51 import jdk.nashorn.internal.runtime.JSType;
52
53 /**
54 * Type class: LONG
55 */
56 class LongType extends BitwiseType {
57 private static final long serialVersionUID = 1L;
58
59 private static final CompilerConstants.Call VALUE_OF = staticCallNoLookup(Long.class, "valueOf", Long.class, long.class);
60
61 protected LongType(final String name) {
62 super(name, long.class, 3, 2);
63 }
64
65 protected LongType() {
66 this("long");
67 }
68
69 @Override
70 public Type nextWider() {
71 return NUMBER;
72 }
73
74 @Override
75 public Class<?> getBoxedType() {
76 return Long.class;
77 }
78
79 @Override
80 public char getBytecodeStackType() {
81 return 'J';
82 }
83
84 @Override
85 public Type cmp(final MethodVisitor method) {
86 method.visitInsn(LCMP);
87 return INT;
88 }
89
90 @Override
91 public Type load(final MethodVisitor method, final int slot) {
92 assert slot != -1;
93 method.visitVarInsn(LLOAD, slot);
94 return LONG;
95 }
96
97 @Override
98 public void store(final MethodVisitor method, final int slot) {
99 assert slot != -1;
100 method.visitVarInsn(LSTORE, slot);
101 }
102
103 @Override
104 public Type ldc(final MethodVisitor method, final Object c) {
105 assert c instanceof Long;
106
107 final long value = (Long) c;
108
109 if (value == 0L) {
110 method.visitInsn(LCONST_0);
111 } else if (value == 1L) {
112 method.visitInsn(LCONST_1);
113 } else {
114 method.visitLdcInsn(c);
115 }
116
117 return Type.LONG;
118 }
119
120 @Override
121 public Type convert(final MethodVisitor method, final Type to) {
122 if (isEquivalentTo(to)) {
123 return to;
124 }
125
126 if (to.isNumber()) {
127 method.visitInsn(L2D);
128 } else if (to.isInteger()) {
129 invokestatic(method, JSType.TO_INT32_L);
130 } else if (to.isBoolean()) {
131 method.visitInsn(L2I);
132 } else if (to.isObject()) {
133 invokestatic(method, VALUE_OF);
134 } else {
135 assert false : "Illegal conversion " + this + " -> " + to;
136 }
137
138 return to;
139 }
140
141 @Override
142 public Type add(final MethodVisitor method, final int programPoint) {
143 if(programPoint == INVALID_PROGRAM_POINT) {
144 method.visitInsn(LADD);
145 } else {
146 method.visitInvokeDynamicInsn("ladd", "(JJ)J", MATHBOOTSTRAP, programPoint);
147 }
148 return LONG;
149 }
150
151 @Override
152 public Type sub(final MethodVisitor method, final int programPoint) {
153 if(programPoint == INVALID_PROGRAM_POINT) {
154 method.visitInsn(LSUB);
155 } else {
156 method.visitInvokeDynamicInsn("lsub", "(JJ)J", MATHBOOTSTRAP, programPoint);
157 }
158 return LONG;
159 }
160
161 @Override
162 public Type mul(final MethodVisitor method, final int programPoint) {
163 if(programPoint == INVALID_PROGRAM_POINT) {
164 method.visitInsn(LMUL);
165 } else {
166 method.visitInvokeDynamicInsn("lmul", "(JJ)J", MATHBOOTSTRAP, programPoint);
167 }
168 return LONG;
169 }
170
171 @Override
172 public Type div(final MethodVisitor method, final int programPoint) {
173 if (programPoint == INVALID_PROGRAM_POINT) {
174 JSType.DIV_ZERO_LONG.invoke(method);
175 } else {
176 method.visitInvokeDynamicInsn("ldiv", "(JJ)J", MATHBOOTSTRAP, programPoint);
177 }
178 return LONG;
179 }
180
181 @Override
182 public Type rem(final MethodVisitor method, final int programPoint) {
183 if (programPoint == INVALID_PROGRAM_POINT) {
184 JSType.REM_ZERO_LONG.invoke(method);
185 } else {
186 method.visitInvokeDynamicInsn("lrem", "(JJ)J", MATHBOOTSTRAP, programPoint);
187 }
188 return LONG;
189 }
190
191 @Override
192 public Type shr(final MethodVisitor method) {
193 method.visitInsn(LUSHR);
194 return LONG;
195 }
196
197 @Override
198 public Type sar(final MethodVisitor method) {
199 method.visitInsn(LSHR);
200 return LONG;
201 }
202
203 @Override
204 public Type shl(final MethodVisitor method) {
205 method.visitInsn(LSHL);
206 return LONG;
207 }
208
209 @Override
210 public Type and(final MethodVisitor method) {
211 method.visitInsn(LAND);
212 return LONG;
213 }
214
215 @Override
216 public Type or(final MethodVisitor method) {
217 method.visitInsn(LOR);
218 return LONG;
219 }
220
221 @Override
222 public Type xor(final MethodVisitor method) {
223 method.visitInsn(LXOR);
224 return LONG;
225 }
226
227 @Override
228 public Type neg(final MethodVisitor method, final int programPoint) {
229 method.visitInvokeDynamicInsn("lneg", "(J)J", MATHBOOTSTRAP, programPoint);
230 return LONG;
231 }
232
233 @Override
234 public void _return(final MethodVisitor method) {
235 method.visitInsn(LRETURN);
236 }
237
238 @Override
239 public Type loadUndefined(final MethodVisitor method) {
240 method.visitLdcInsn(UNDEFINED_LONG);
241 return LONG;
242 }
243
244 @Override
245 public Type loadForcedInitializer(final MethodVisitor method) {
246 method.visitInsn(LCONST_0);
247 return LONG;
248 }
249
250 @Override
251 public Type cmp(final MethodVisitor method, final boolean isCmpG) {
252 return cmp(method);
253 }
254 }