001 /*
002 * Copyright 1999-2005 Sun Microsystems, Inc. All Rights Reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation. Sun designates this
008 * particular file as subject to the "Classpath" exception as provided
009 * by Sun in the LICENSE file that accompanied this code.
010 *
011 * This code is distributed in the hope that it will be useful, but WITHOUT
012 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
014 * version 2 for more details (a copy is included in the LICENSE file that
015 * accompanied this code).
016 *
017 * You should have received a copy of the GNU General Public License version
018 * 2 along with this work; if not, write to the Free Software Foundation,
019 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020 *
021 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022 * CA 95054 USA or visit www.sun.com if you need additional information or
023 * have any questions.
024 */
025
026 package com.sun.tools.javac.jvm;
027
028
029 /** Bytecode instruction codes, as well as typecodes used as
030 * instruction modifiers.
031 *
032 * <p><b>This is NOT part of any API supported by Sun Microsystems. If
033 * you write code that depends on this, you do so at your own risk.
034 * This code and its internal interfaces are subject to change or
035 * deletion without notice.</b>
036 */
037 public interface ByteCodes {
038
039 /** Byte code instruction codes.
040 */
041 int illegal = -1,
042 nop = 0,
043 aconst_null = 1,
044 iconst_m1 = 2,
045 iconst_0 = 3,
046 iconst_1 = 4,
047 iconst_2 = 5,
048 iconst_3 = 6,
049 iconst_4 = 7,
050 iconst_5 = 8,
051 lconst_0 = 9,
052 lconst_1 = 10,
053 fconst_0 = 11,
054 fconst_1 = 12,
055 fconst_2 = 13,
056 dconst_0 = 14,
057 dconst_1 = 15,
058 bipush = 16,
059 sipush = 17,
060 ldc1 = 18,
061 ldc2 = 19,
062 ldc2w = 20,
063 iload = 21,
064 lload = 22,
065 fload = 23,
066 dload = 24,
067 aload = 25,
068 iload_0 = 26,
069 iload_1 = 27,
070 iload_2 = 28,
071 iload_3 = 29,
072 lload_0 = 30,
073 lload_1 = 31,
074 lload_2 = 32,
075 lload_3 = 33,
076 fload_0 = 34,
077 fload_1 = 35,
078 fload_2 = 36,
079 fload_3 = 37,
080 dload_0 = 38,
081 dload_1 = 39,
082 dload_2 = 40,
083 dload_3 = 41,
084 aload_0 = 42,
085 aload_1 = 43,
086 aload_2 = 44,
087 aload_3 = 45,
088 iaload = 46,
089 laload = 47,
090 faload = 48,
091 daload = 49,
092 aaload = 50,
093 baload = 51,
094 caload = 52,
095 saload = 53,
096 istore = 54,
097 lstore = 55,
098 fstore = 56,
099 dstore = 57,
100 astore = 58,
101 istore_0 = 59,
102 istore_1 = 60,
103 istore_2 = 61,
104 istore_3 = 62,
105 lstore_0 = 63,
106 lstore_1 = 64,
107 lstore_2 = 65,
108 lstore_3 = 66,
109 fstore_0 = 67,
110 fstore_1 = 68,
111 fstore_2 = 69,
112 fstore_3 = 70,
113 dstore_0 = 71,
114 dstore_1 = 72,
115 dstore_2 = 73,
116 dstore_3 = 74,
117 astore_0 = 75,
118 astore_1 = 76,
119 astore_2 = 77,
120 astore_3 = 78,
121 iastore = 79,
122 lastore = 80,
123 fastore = 81,
124 dastore = 82,
125 aastore = 83,
126 bastore = 84,
127 castore = 85,
128 sastore = 86,
129 pop = 87,
130 pop2 = 88,
131 dup = 89,
132 dup_x1 = 90,
133 dup_x2 = 91,
134 dup2 = 92,
135 dup2_x1 = 93,
136 dup2_x2 = 94,
137 swap = 95,
138 iadd = 96,
139 ladd = 97,
140 fadd = 98,
141 dadd = 99,
142 isub = 100,
143 lsub = 101,
144 fsub = 102,
145 dsub = 103,
146 imul = 104,
147 lmul = 105,
148 fmul = 106,
149 dmul = 107,
150 idiv = 108,
151 ldiv = 109,
152 fdiv = 110,
153 ddiv = 111,
154 imod = 112,
155 lmod = 113,
156 fmod = 114,
157 dmod = 115,
158 ineg = 116,
159 lneg = 117,
160 fneg = 118,
161 dneg = 119,
162 ishl = 120,
163 lshl = 121,
164 ishr = 122,
165 lshr = 123,
166 iushr = 124,
167 lushr = 125,
168 iand = 126,
169 land = 127,
170 ior = 128,
171 lor = 129,
172 ixor = 130,
173 lxor = 131,
174 iinc = 132,
175 i2l = 133,
176 i2f = 134,
177 i2d = 135,
178 l2i = 136,
179 l2f = 137,
180 l2d = 138,
181 f2i = 139,
182 f2l = 140,
183 f2d = 141,
184 d2i = 142,
185 d2l = 143,
186 d2f = 144,
187 int2byte = 145,
188 int2char = 146,
189 int2short = 147,
190 lcmp = 148,
191 fcmpl = 149,
192 fcmpg = 150,
193 dcmpl = 151,
194 dcmpg = 152,
195 ifeq = 153,
196 ifne = 154,
197 iflt = 155,
198 ifge = 156,
199 ifgt = 157,
200 ifle = 158,
201 if_icmpeq = 159,
202 if_icmpne = 160,
203 if_icmplt = 161,
204 if_icmpge = 162,
205 if_icmpgt = 163,
206 if_icmple = 164,
207 if_acmpeq = 165,
208 if_acmpne = 166,
209 goto_ = 167,
210 jsr = 168,
211 ret = 169,
212 tableswitch = 170,
213 lookupswitch = 171,
214 ireturn = 172,
215 lreturn = 173,
216 freturn = 174,
217 dreturn = 175,
218 areturn = 176,
219 return_ = 177,
220 getstatic = 178,
221 putstatic = 179,
222 getfield = 180,
223 putfield = 181,
224 invokevirtual = 182,
225 invokespecial = 183,
226 invokestatic = 184,
227 invokeinterface = 185,
228 // ___unused___ = 186,
229 new_ = 187,
230 newarray = 188,
231 anewarray = 189,
232 arraylength = 190,
233 athrow = 191,
234 checkcast = 192,
235 instanceof_ = 193,
236 monitorenter = 194,
237 monitorexit = 195,
238 wide = 196,
239 multianewarray = 197,
240 if_acmp_null = 198,
241 if_acmp_nonnull = 199,
242 goto_w = 200,
243 jsr_w = 201,
244 breakpoint = 202,
245 ByteCodeCount = 203;
246
247 /** Virtual instruction codes; used for constant folding.
248 */
249 int string_add = 256, // string +
250 bool_not = 257, // boolean !
251 bool_and = 258, // boolean &&
252 bool_or = 259; // boolean ||
253
254 /** Virtual opcodes; used for shifts with long shiftcount
255 */
256 int ishll = 270, // int shift left with long count
257 lshll = 271, // long shift left with long count
258 ishrl = 272, // int shift right with long count
259 lshrl = 273, // long shift right with long count
260 iushrl = 274, // int unsigned shift right with long count
261 lushrl = 275; // long unsigned shift right with long count
262
263 /** Virtual opcode for null reference checks
264 */
265 int nullchk = 276; // return operand if non-null,
266 // otherwise throw NullPointerException.
267
268 /** Virtual opcode for disallowed operations.
269 */
270 int error = 277;
271
272 /** All conditional jumps come in pairs. To streamline the
273 * treatment of jumps, we also introduce a negation of an
274 * unconditional jump. That opcode happens to be jsr.
275 */
276 int dontgoto = jsr;
277
278 /** Shift and mask constants for shifting prefix instructions.
279 * a pair of instruction codes such as LCMP ; IFEQ is encoded
280 * in Symtab as (LCMP << preShift) + IFEQ.
281 */
282 int preShift = 9;
283 int preMask = (1 << preShift) - 1;
284
285 /** Type codes.
286 */
287 int INTcode = 0,
288 LONGcode = 1,
289 FLOATcode = 2,
290 DOUBLEcode = 3,
291 OBJECTcode = 4,
292 BYTEcode = 5,
293 CHARcode = 6,
294 SHORTcode = 7,
295 VOIDcode = 8,
296 TypeCodeCount = 9;
297
298 static final String[] typecodeNames = {
299 "int",
300 "long",
301 "float",
302 "double",
303 "object",
304 "byte",
305 "char",
306 "short",
307 "void",
308 "oops"
309 };
310 }