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comparison agent/src/share/classes/sun/jvm/hotspot/interpreter/Bytecodes.java @ 0:a61af66fc99e jdk7-b24

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1 /*
2 * Copyright 2001-2004 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 package sun.jvm.hotspot.interpreter;
26
27 import java.util.*;
28 import sun.jvm.hotspot.oops.*;
29 import sun.jvm.hotspot.runtime.*;
30 import sun.jvm.hotspot.utilities.*;
31
32 // Bytecodes specifies all bytecodes used in the VM and
33 // provides utility functions to get bytecode attributes.
34
35 public class Bytecodes {
36 public static final int _illegal = -1;
37
38 // Java bytecodes
39 public static final int _nop = 0; // 0x00
40 public static final int _aconst_null = 1; // 0x01
41 public static final int _iconst_m1 = 2; // 0x02
42 public static final int _iconst_0 = 3; // 0x03
43 public static final int _iconst_1 = 4; // 0x04
44 public static final int _iconst_2 = 5; // 0x05
45 public static final int _iconst_3 = 6; // 0x06
46 public static final int _iconst_4 = 7; // 0x07
47 public static final int _iconst_5 = 8; // 0x08
48 public static final int _lconst_0 = 9; // 0x09
49 public static final int _lconst_1 = 10; // 0x0a
50 public static final int _fconst_0 = 11; // 0x0b
51 public static final int _fconst_1 = 12; // 0x0c
52 public static final int _fconst_2 = 13; // 0x0d
53 public static final int _dconst_0 = 14; // 0x0e
54 public static final int _dconst_1 = 15; // 0x0f
55 public static final int _bipush = 16; // 0x10
56 public static final int _sipush = 17; // 0x11
57 public static final int _ldc = 18; // 0x12
58 public static final int _ldc_w = 19; // 0x13
59 public static final int _ldc2_w = 20; // 0x14
60 public static final int _iload = 21; // 0x15
61 public static final int _lload = 22; // 0x16
62 public static final int _fload = 23; // 0x17
63 public static final int _dload = 24; // 0x18
64 public static final int _aload = 25; // 0x19
65 public static final int _iload_0 = 26; // 0x1a
66 public static final int _iload_1 = 27; // 0x1b
67 public static final int _iload_2 = 28; // 0x1c
68 public static final int _iload_3 = 29; // 0x1d
69 public static final int _lload_0 = 30; // 0x1e
70 public static final int _lload_1 = 31; // 0x1f
71 public static final int _lload_2 = 32; // 0x20
72 public static final int _lload_3 = 33; // 0x21
73 public static final int _fload_0 = 34; // 0x22
74 public static final int _fload_1 = 35; // 0x23
75 public static final int _fload_2 = 36; // 0x24
76 public static final int _fload_3 = 37; // 0x25
77 public static final int _dload_0 = 38; // 0x26
78 public static final int _dload_1 = 39; // 0x27
79 public static final int _dload_2 = 40; // 0x28
80 public static final int _dload_3 = 41; // 0x29
81 public static final int _aload_0 = 42; // 0x2a
82 public static final int _aload_1 = 43; // 0x2b
83 public static final int _aload_2 = 44; // 0x2c
84 public static final int _aload_3 = 45; // 0x2d
85 public static final int _iaload = 46; // 0x2e
86 public static final int _laload = 47; // 0x2f
87 public static final int _faload = 48; // 0x30
88 public static final int _daload = 49; // 0x31
89 public static final int _aaload = 50; // 0x32
90 public static final int _baload = 51; // 0x33
91 public static final int _caload = 52; // 0x34
92 public static final int _saload = 53; // 0x35
93 public static final int _istore = 54; // 0x36
94 public static final int _lstore = 55; // 0x37
95 public static final int _fstore = 56; // 0x38
96 public static final int _dstore = 57; // 0x39
97 public static final int _astore = 58; // 0x3a
98 public static final int _istore_0 = 59; // 0x3b
99 public static final int _istore_1 = 60; // 0x3c
100 public static final int _istore_2 = 61; // 0x3d
101 public static final int _istore_3 = 62; // 0x3e
102 public static final int _lstore_0 = 63; // 0x3f
103 public static final int _lstore_1 = 64; // 0x40
104 public static final int _lstore_2 = 65; // 0x41
105 public static final int _lstore_3 = 66; // 0x42
106 public static final int _fstore_0 = 67; // 0x43
107 public static final int _fstore_1 = 68; // 0x44
108 public static final int _fstore_2 = 69; // 0x45
109 public static final int _fstore_3 = 70; // 0x46
110 public static final int _dstore_0 = 71; // 0x47
111 public static final int _dstore_1 = 72; // 0x48
112 public static final int _dstore_2 = 73; // 0x49
113 public static final int _dstore_3 = 74; // 0x4a
114 public static final int _astore_0 = 75; // 0x4b
115 public static final int _astore_1 = 76; // 0x4c
116 public static final int _astore_2 = 77; // 0x4d
117 public static final int _astore_3 = 78; // 0x4e
118 public static final int _iastore = 79; // 0x4f
119 public static final int _lastore = 80; // 0x50
120 public static final int _fastore = 81; // 0x51
121 public static final int _dastore = 82; // 0x52
122 public static final int _aastore = 83; // 0x53
123 public static final int _bastore = 84; // 0x54
124 public static final int _castore = 85; // 0x55
125 public static final int _sastore = 86; // 0x56
126 public static final int _pop = 87; // 0x57
127 public static final int _pop2 = 88; // 0x58
128 public static final int _dup = 89; // 0x59
129 public static final int _dup_x1 = 90; // 0x5a
130 public static final int _dup_x2 = 91; // 0x5b
131 public static final int _dup2 = 92; // 0x5c
132 public static final int _dup2_x1 = 93; // 0x5d
133 public static final int _dup2_x2 = 94; // 0x5e
134 public static final int _swap = 95; // 0x5f
135 public static final int _iadd = 96; // 0x60
136 public static final int _ladd = 97; // 0x61
137 public static final int _fadd = 98; // 0x62
138 public static final int _dadd = 99; // 0x63
139 public static final int _isub = 100; // 0x64
140 public static final int _lsub = 101; // 0x65
141 public static final int _fsub = 102; // 0x66
142 public static final int _dsub = 103; // 0x67
143 public static final int _imul = 104; // 0x68
144 public static final int _lmul = 105; // 0x69
145 public static final int _fmul = 106; // 0x6a
146 public static final int _dmul = 107; // 0x6b
147 public static final int _idiv = 108; // 0x6c
148 public static final int _ldiv = 109; // 0x6d
149 public static final int _fdiv = 110; // 0x6e
150 public static final int _ddiv = 111; // 0x6f
151 public static final int _irem = 112; // 0x70
152 public static final int _lrem = 113; // 0x71
153 public static final int _frem = 114; // 0x72
154 public static final int _drem = 115; // 0x73
155 public static final int _ineg = 116; // 0x74
156 public static final int _lneg = 117; // 0x75
157 public static final int _fneg = 118; // 0x76
158 public static final int _dneg = 119; // 0x77
159 public static final int _ishl = 120; // 0x78
160 public static final int _lshl = 121; // 0x79
161 public static final int _ishr = 122; // 0x7a
162 public static final int _lshr = 123; // 0x7b
163 public static final int _iushr = 124; // 0x7c
164 public static final int _lushr = 125; // 0x7d
165 public static final int _iand = 126; // 0x7e
166 public static final int _land = 127; // 0x7f
167 public static final int _ior = 128; // 0x80
168 public static final int _lor = 129; // 0x81
169 public static final int _ixor = 130; // 0x82
170 public static final int _lxor = 131; // 0x83
171 public static final int _iinc = 132; // 0x84
172 public static final int _i2l = 133; // 0x85
173 public static final int _i2f = 134; // 0x86
174 public static final int _i2d = 135; // 0x87
175 public static final int _l2i = 136; // 0x88
176 public static final int _l2f = 137; // 0x89
177 public static final int _l2d = 138; // 0x8a
178 public static final int _f2i = 139; // 0x8b
179 public static final int _f2l = 140; // 0x8c
180 public static final int _f2d = 141; // 0x8d
181 public static final int _d2i = 142; // 0x8e
182 public static final int _d2l = 143; // 0x8f
183 public static final int _d2f = 144; // 0x90
184 public static final int _i2b = 145; // 0x91
185 public static final int _i2c = 146; // 0x92
186 public static final int _i2s = 147; // 0x93
187 public static final int _lcmp = 148; // 0x94
188 public static final int _fcmpl = 149; // 0x95
189 public static final int _fcmpg = 150; // 0x96
190 public static final int _dcmpl = 151; // 0x97
191 public static final int _dcmpg = 152; // 0x98
192 public static final int _ifeq = 153; // 0x99
193 public static final int _ifne = 154; // 0x9a
194 public static final int _iflt = 155; // 0x9b
195 public static final int _ifge = 156; // 0x9c
196 public static final int _ifgt = 157; // 0x9d
197 public static final int _ifle = 158; // 0x9e
198 public static final int _if_icmpeq = 159; // 0x9f
199 public static final int _if_icmpne = 160; // 0xa0
200 public static final int _if_icmplt = 161; // 0xa1
201 public static final int _if_icmpge = 162; // 0xa2
202 public static final int _if_icmpgt = 163; // 0xa3
203 public static final int _if_icmple = 164; // 0xa4
204 public static final int _if_acmpeq = 165; // 0xa5
205 public static final int _if_acmpne = 166; // 0xa6
206 public static final int _goto = 167; // 0xa7
207 public static final int _jsr = 168; // 0xa8
208 public static final int _ret = 169; // 0xa9
209 public static final int _tableswitch = 170; // 0xaa
210 public static final int _lookupswitch = 171; // 0xab
211 public static final int _ireturn = 172; // 0xac
212 public static final int _lreturn = 173; // 0xad
213 public static final int _freturn = 174; // 0xae
214 public static final int _dreturn = 175; // 0xaf
215 public static final int _areturn = 176; // 0xb0
216 public static final int _return = 177; // 0xb1
217 public static final int _getstatic = 178; // 0xb2
218 public static final int _putstatic = 179; // 0xb3
219 public static final int _getfield = 180; // 0xb4
220 public static final int _putfield = 181; // 0xb5
221 public static final int _invokevirtual = 182; // 0xb6
222 public static final int _invokespecial = 183; // 0xb7
223 public static final int _invokestatic = 184; // 0xb8
224 public static final int _invokeinterface = 185; // 0xb9
225 public static final int _xxxunusedxxx = 186; // 0xba
226 public static final int _new = 187; // 0xbb
227 public static final int _newarray = 188; // 0xbc
228 public static final int _anewarray = 189; // 0xbd
229 public static final int _arraylength = 190; // 0xbe
230 public static final int _athrow = 191; // 0xbf
231 public static final int _checkcast = 192; // 0xc0
232 public static final int _instanceof = 193; // 0xc1
233 public static final int _monitorenter = 194; // 0xc2
234 public static final int _monitorexit = 195; // 0xc3
235 public static final int _wide = 196; // 0xc4
236 public static final int _multianewarray = 197; // 0xc5
237 public static final int _ifnull = 198; // 0xc6
238 public static final int _ifnonnull = 199; // 0xc7
239 public static final int _goto_w = 200; // 0xc8
240 public static final int _jsr_w = 201; // 0xc9
241 public static final int _breakpoint = 202; // 0xca
242
243 public static final int number_of_java_codes = 203;
244
245 // JVM bytecodes
246 public static final int _fast_agetfield = number_of_java_codes;
247 public static final int _fast_bgetfield = 204;
248 public static final int _fast_cgetfield = 205;
249 public static final int _fast_dgetfield = 206;
250 public static final int _fast_fgetfield = 207;
251 public static final int _fast_igetfield = 208;
252 public static final int _fast_lgetfield = 209;
253 public static final int _fast_sgetfield = 210;
254 public static final int _fast_aputfield = 211;
255 public static final int _fast_bputfield = 212;
256 public static final int _fast_cputfield = 213;
257 public static final int _fast_dputfield = 214;
258 public static final int _fast_fputfield = 215;
259 public static final int _fast_iputfield = 216;
260 public static final int _fast_lputfield = 217;
261 public static final int _fast_sputfield = 218;
262 public static final int _fast_aload_0 = 219;
263 public static final int _fast_iaccess_0 = 220;
264 public static final int _fast_aaccess_0 = 221;
265 public static final int _fast_faccess_0 = 222;
266 public static final int _fast_iload = 223;
267 public static final int _fast_iload2 = 224;
268 public static final int _fast_icaload = 225;
269 public static final int _fast_invokevfinal = 226;
270 public static final int _fast_linearswitch = 227;
271 public static final int _fast_binaryswitch = 228;
272 public static final int _shouldnotreachhere = 229; // For debugging
273
274 public static final int number_of_codes = 230;
275
276 public static int specialLengthAt(Method method, int bci) {
277 int code = codeAt(method, bci);
278 switch (code) {
279 case _wide:
280 return wideLengthFor(method.getBytecodeOrBPAt(bci + 1));
281 case _tableswitch:
282 {
283 int alignedBCI = Bits.roundTo(bci + 1, jintSize);
284 int lo = method.getBytecodeIntArg(alignedBCI + 1*jintSize);
285 int hi = method.getBytecodeIntArg(alignedBCI + 2*jintSize);
286 return (alignedBCI - bci) + (3 + hi - lo + 1)*jintSize;
287 }
288
289 case _lookupswitch: // fall through
290 case _fast_binaryswitch: // fall through
291 case _fast_linearswitch:
292 {
293 int alignedBCI = Bits.roundTo(bci + 1, jintSize);
294 int npairs = method.getBytecodeIntArg(alignedBCI + jintSize);
295 return (alignedBCI - bci) + (2 + 2*npairs)*jintSize;
296 }
297
298 }
299 throw new RuntimeException("should not reach here");
300 }
301
302 // Conversion
303 public static void check(int code) {
304 if (Assert.ASSERTS_ENABLED) {
305 Assert.that(isDefined(code), "illegal code " + code);
306 }
307 }
308 public static void wideCheck(int code) {
309 if (Assert.ASSERTS_ENABLED) {
310 Assert.that(wideIsDefined(code), "illegal code " + code);
311 }
312 }
313
314 /** Fetches a bytecode, hiding breakpoints as necessary */
315 public static int codeAt(Method method, int bci) {
316 int res = codeOrBPAt(method, bci);
317 if (res == _breakpoint) {
318 res = method.getOrigBytecodeAt(bci);
319 }
320 return res;
321 }
322
323 /** Fetches a bytecode or a breakpoint */
324 public static int codeOrBPAt(Method method, int bci) {
325 return method.getBytecodeOrBPAt(bci);
326 }
327
328 public static boolean isActiveBreakpointAt(Method method, int bci) {
329 return (codeOrBPAt(method, bci) == _breakpoint);
330 }
331
332 // find a bytecode, behind a breakpoint if necessary:
333 // FIXME: not yet implementable
334 // static Code non_breakpoint_code_at(address bcp, methodOop method = null);
335
336 // Bytecode attributes
337 public static boolean isDefined (int code) { return 0 <= code && code < number_of_codes && _format[code] != null; }
338 public static boolean wideIsDefined(int code) { return isDefined(code) && _wide_format[code] != null; }
339 public static String name (int code) { check(code); return _name [code]; }
340 public static String format (int code) { check(code); return _format [code]; }
341 public static String wideFormat (int code) { wideCheck(code); return _wide_format [code]; }
342 public static int resultType (int code) { check(code); return _result_type [code]; }
343 public static int depth (int code) { check(code); return _depth [code]; }
344 public static int lengthFor (int code) { check(code); return _length [code]; }
345 public static boolean canTrap (int code) { check(code); return _can_trap [code]; }
346 public static int javaCode (int code) { check(code); return _java_code [code]; }
347 public static boolean canRewrite (int code) { check(code); return _can_rewrite [code]; }
348 public static int wideLengthFor(int code) { wideCheck(code); return wideFormat(code).length(); }
349 public static int lengthAt (Method method, int bci) { int l = lengthFor(codeAt(method, bci)); return l > 0 ? l : specialLengthAt(method, bci); }
350 public static int javaLengthAt (Method method, int bci) { int l = lengthFor(javaCode(codeAt(method, bci))); return l > 0 ? l : specialLengthAt(method, bci); }
351 public static boolean isJavaCode (int code) { return 0 <= code && code < number_of_java_codes; }
352 public static boolean isFastCode (int code) { return number_of_java_codes <= code && code < number_of_codes; }
353
354 public static boolean isAload (int code) { return (code == _aload || code == _aload_0 || code == _aload_1
355 || code == _aload_2 || code == _aload_3); }
356 public static boolean isAstore (int code) { return (code == _astore || code == _astore_0 || code == _astore_1
357 || code == _astore_2 || code == _astore_3); }
358
359 public static boolean isZeroConst (int code) { return (code == _aconst_null || code == _iconst_0
360 || code == _fconst_0 || code == _dconst_0); }
361
362 //----------------------------------------------------------------------
363 // Internals only below this point
364 //
365
366 private static String[] _name;
367 private static String[] _format;
368 private static String[] _wide_format;
369 private static int[] _result_type;
370 private static byte[] _depth;
371 private static byte[] _length;
372 private static boolean[] _can_trap;
373 private static int[] _java_code;
374 private static boolean[] _can_rewrite;
375
376 static {
377 _name = new String [number_of_codes];
378 _format = new String [number_of_codes];
379 _wide_format = new String [number_of_codes];
380 _result_type = new int [number_of_codes]; // See BasicType.java
381 _depth = new byte [number_of_codes];
382 _length = new byte [number_of_codes];
383 _can_trap = new boolean[number_of_codes];
384 _java_code = new int [number_of_codes];
385 _can_rewrite = new boolean[number_of_codes];
386
387 // In case we want to fetch this information from the VM in the
388 // future
389 VM.registerVMInitializedObserver(new Observer() {
390 public void update(Observable o, Object data) {
391 initialize();
392 }
393 });
394 }
395
396 private static final int jintSize = 4;
397
398 // private static String[] _name = new String [number_of_codes];
399 // private static String[] _format = new String [number_of_codes];
400 // private static String[] _wide_format = new String [number_of_codes];
401 // private static int[] _result_type = new int [number_of_codes]; // See BasicType.java
402 // private static byte[] _depth = new byte [number_of_codes];
403 // private static byte[] _length = new byte [number_of_codes];
404 // private static boolean[] _can_trap = new boolean[number_of_codes];
405 // private static int[] _java_code = new int [number_of_codes];
406 // private static boolean[] _can_rewrite = new boolean[number_of_codes];
407
408 // Initialization
409 private static void initialize() {
410 if (Assert.ASSERTS_ENABLED) {
411 Assert.that(number_of_codes <= 256, "too many bytecodes");
412 }
413
414 // Format strings interpretation:
415 //
416 // b: bytecode
417 // c: signed constant, Java byte-ordering
418 // i: unsigned index , Java byte-ordering
419 // j: unsigned index , native byte-ordering
420 // o: branch offset , Java byte-ordering
421 // _: unused/ignored
422 // w: wide bytecode
423 //
424 // Note: Right now the format strings are used for 2 purposes:
425 // 1. to specify the length of the bytecode
426 // (= number of characters in format string)
427 // 2. to specify the bytecode attributes
428 //
429 // The bytecode attributes are currently used only for bytecode tracing
430 // (see BytecodeTracer); thus if more specific format information is
431 // used, one would also have to adjust the bytecode tracer.
432 //
433 // Note: For bytecodes with variable length, the format string is the empty string.
434
435 // Note 1: null for the format string means the bytecode doesn't exist
436 // in that form.
437 //
438 // Note 2: The result type is T_ILLEGAL for bytecodes where the top of stack
439 // type after execution is not only determined by the bytecode itself.
440
441 // Java bytecodes
442 // bytecode bytecode name format wide f. result tp stk traps
443 def(_nop , "nop" , "b" , null , BasicType.getTVoid() , 0, false);
444 def(_aconst_null , "aconst_null" , "b" , null , BasicType.getTObject() , 1, false);
445 def(_iconst_m1 , "iconst_m1" , "b" , null , BasicType.getTInt() , 1, false);
446 def(_iconst_0 , "iconst_0" , "b" , null , BasicType.getTInt() , 1, false);
447 def(_iconst_1 , "iconst_1" , "b" , null , BasicType.getTInt() , 1, false);
448 def(_iconst_2 , "iconst_2" , "b" , null , BasicType.getTInt() , 1, false);
449 def(_iconst_3 , "iconst_3" , "b" , null , BasicType.getTInt() , 1, false);
450 def(_iconst_4 , "iconst_4" , "b" , null , BasicType.getTInt() , 1, false);
451 def(_iconst_5 , "iconst_5" , "b" , null , BasicType.getTInt() , 1, false);
452 def(_lconst_0 , "lconst_0" , "b" , null , BasicType.getTLong() , 2, false);
453 def(_lconst_1 , "lconst_1" , "b" , null , BasicType.getTLong() , 2, false);
454 def(_fconst_0 , "fconst_0" , "b" , null , BasicType.getTFloat() , 1, false);
455 def(_fconst_1 , "fconst_1" , "b" , null , BasicType.getTFloat() , 1, false);
456 def(_fconst_2 , "fconst_2" , "b" , null , BasicType.getTFloat() , 1, false);
457 def(_dconst_0 , "dconst_0" , "b" , null , BasicType.getTDouble() , 2, false);
458 def(_dconst_1 , "dconst_1" , "b" , null , BasicType.getTDouble() , 2, false);
459 def(_bipush , "bipush" , "bc" , null , BasicType.getTInt() , 1, false);
460 def(_sipush , "sipush" , "bcc" , null , BasicType.getTInt() , 1, false);
461 def(_ldc , "ldc" , "bi" , null , BasicType.getTIllegal(), 1, true );
462 def(_ldc_w , "ldc_w" , "bii" , null , BasicType.getTIllegal(), 1, true );
463 def(_ldc2_w , "ldc2_w" , "bii" , null , BasicType.getTIllegal(), 2, true );
464 def(_iload , "iload" , "bi" , "wbii" , BasicType.getTInt() , 1, false);
465 def(_lload , "lload" , "bi" , "wbii" , BasicType.getTLong() , 2, false);
466 def(_fload , "fload" , "bi" , "wbii" , BasicType.getTFloat() , 1, false);
467 def(_dload , "dload" , "bi" , "wbii" , BasicType.getTDouble() , 2, false);
468 def(_aload , "aload" , "bi" , "wbii" , BasicType.getTObject() , 1, false);
469 def(_iload_0 , "iload_0" , "b" , null , BasicType.getTInt() , 1, false);
470 def(_iload_1 , "iload_1" , "b" , null , BasicType.getTInt() , 1, false);
471 def(_iload_2 , "iload_2" , "b" , null , BasicType.getTInt() , 1, false);
472 def(_iload_3 , "iload_3" , "b" , null , BasicType.getTInt() , 1, false);
473 def(_lload_0 , "lload_0" , "b" , null , BasicType.getTLong() , 2, false);
474 def(_lload_1 , "lload_1" , "b" , null , BasicType.getTLong() , 2, false);
475 def(_lload_2 , "lload_2" , "b" , null , BasicType.getTLong() , 2, false);
476 def(_lload_3 , "lload_3" , "b" , null , BasicType.getTLong() , 2, false);
477 def(_fload_0 , "fload_0" , "b" , null , BasicType.getTFloat() , 1, false);
478 def(_fload_1 , "fload_1" , "b" , null , BasicType.getTFloat() , 1, false);
479 def(_fload_2 , "fload_2" , "b" , null , BasicType.getTFloat() , 1, false);
480 def(_fload_3 , "fload_3" , "b" , null , BasicType.getTFloat() , 1, false);
481 def(_dload_0 , "dload_0" , "b" , null , BasicType.getTDouble() , 2, false);
482 def(_dload_1 , "dload_1" , "b" , null , BasicType.getTDouble() , 2, false);
483 def(_dload_2 , "dload_2" , "b" , null , BasicType.getTDouble() , 2, false);
484 def(_dload_3 , "dload_3" , "b" , null , BasicType.getTDouble() , 2, false);
485 def(_aload_0 , "aload_0" , "b" , null , BasicType.getTObject() , 1, true ); // rewriting in interpreter
486 def(_aload_1 , "aload_1" , "b" , null , BasicType.getTObject() , 1, false);
487 def(_aload_2 , "aload_2" , "b" , null , BasicType.getTObject() , 1, false);
488 def(_aload_3 , "aload_3" , "b" , null , BasicType.getTObject() , 1, false);
489 def(_iaload , "iaload" , "b" , null , BasicType.getTInt() , -1, true );
490 def(_laload , "laload" , "b" , null , BasicType.getTLong() , 0, true );
491 def(_faload , "faload" , "b" , null , BasicType.getTFloat() , -1, true );
492 def(_daload , "daload" , "b" , null , BasicType.getTDouble() , 0, true );
493 def(_aaload , "aaload" , "b" , null , BasicType.getTObject() , -1, true );
494 def(_baload , "baload" , "b" , null , BasicType.getTInt() , -1, true );
495 def(_caload , "caload" , "b" , null , BasicType.getTInt() , -1, true );
496 def(_saload , "saload" , "b" , null , BasicType.getTInt() , -1, true );
497 def(_istore , "istore" , "bi" , "wbii" , BasicType.getTVoid() , -1, false);
498 def(_lstore , "lstore" , "bi" , "wbii" , BasicType.getTVoid() , -2, false);
499 def(_fstore , "fstore" , "bi" , "wbii" , BasicType.getTVoid() , -1, false);
500 def(_dstore , "dstore" , "bi" , "wbii" , BasicType.getTVoid() , -2, false);
501 def(_astore , "astore" , "bi" , "wbii" , BasicType.getTVoid() , -1, false);
502 def(_istore_0 , "istore_0" , "b" , null , BasicType.getTVoid() , -1, false);
503 def(_istore_1 , "istore_1" , "b" , null , BasicType.getTVoid() , -1, false);
504 def(_istore_2 , "istore_2" , "b" , null , BasicType.getTVoid() , -1, false);
505 def(_istore_3 , "istore_3" , "b" , null , BasicType.getTVoid() , -1, false);
506 def(_lstore_0 , "lstore_0" , "b" , null , BasicType.getTVoid() , -2, false);
507 def(_lstore_1 , "lstore_1" , "b" , null , BasicType.getTVoid() , -2, false);
508 def(_lstore_2 , "lstore_2" , "b" , null , BasicType.getTVoid() , -2, false);
509 def(_lstore_3 , "lstore_3" , "b" , null , BasicType.getTVoid() , -2, false);
510 def(_fstore_0 , "fstore_0" , "b" , null , BasicType.getTVoid() , -1, false);
511 def(_fstore_1 , "fstore_1" , "b" , null , BasicType.getTVoid() , -1, false);
512 def(_fstore_2 , "fstore_2" , "b" , null , BasicType.getTVoid() , -1, false);
513 def(_fstore_3 , "fstore_3" , "b" , null , BasicType.getTVoid() , -1, false);
514 def(_dstore_0 , "dstore_0" , "b" , null , BasicType.getTVoid() , -2, false);
515 def(_dstore_1 , "dstore_1" , "b" , null , BasicType.getTVoid() , -2, false);
516 def(_dstore_2 , "dstore_2" , "b" , null , BasicType.getTVoid() , -2, false);
517 def(_dstore_3 , "dstore_3" , "b" , null , BasicType.getTVoid() , -2, false);
518 def(_astore_0 , "astore_0" , "b" , null , BasicType.getTVoid() , -1, false);
519 def(_astore_1 , "astore_1" , "b" , null , BasicType.getTVoid() , -1, false);
520 def(_astore_2 , "astore_2" , "b" , null , BasicType.getTVoid() , -1, false);
521 def(_astore_3 , "astore_3" , "b" , null , BasicType.getTVoid() , -1, false);
522 def(_iastore , "iastore" , "b" , null , BasicType.getTVoid() , -3, true );
523 def(_lastore , "lastore" , "b" , null , BasicType.getTVoid() , -4, true );
524 def(_fastore , "fastore" , "b" , null , BasicType.getTVoid() , -3, true );
525 def(_dastore , "dastore" , "b" , null , BasicType.getTVoid() , -4, true );
526 def(_aastore , "aastore" , "b" , null , BasicType.getTVoid() , -3, true );
527 def(_bastore , "bastore" , "b" , null , BasicType.getTVoid() , -3, true );
528 def(_castore , "castore" , "b" , null , BasicType.getTVoid() , -3, true );
529 def(_sastore , "sastore" , "b" , null , BasicType.getTVoid() , -3, true );
530 def(_pop , "pop" , "b" , null , BasicType.getTVoid() , -1, false);
531 def(_pop2 , "pop2" , "b" , null , BasicType.getTVoid() , -2, false);
532 def(_dup , "dup" , "b" , null , BasicType.getTVoid() , 1, false);
533 def(_dup_x1 , "dup_x1" , "b" , null , BasicType.getTVoid() , 1, false);
534 def(_dup_x2 , "dup_x2" , "b" , null , BasicType.getTVoid() , 1, false);
535 def(_dup2 , "dup2" , "b" , null , BasicType.getTVoid() , 2, false);
536 def(_dup2_x1 , "dup2_x1" , "b" , null , BasicType.getTVoid() , 2, false);
537 def(_dup2_x2 , "dup2_x2" , "b" , null , BasicType.getTVoid() , 2, false);
538 def(_swap , "swap" , "b" , null , BasicType.getTVoid() , 0, false);
539 def(_iadd , "iadd" , "b" , null , BasicType.getTInt() , -1, false);
540 def(_ladd , "ladd" , "b" , null , BasicType.getTLong() , -2, false);
541 def(_fadd , "fadd" , "b" , null , BasicType.getTFloat() , -1, false);
542 def(_dadd , "dadd" , "b" , null , BasicType.getTDouble() , -2, false);
543 def(_isub , "isub" , "b" , null , BasicType.getTInt() , -1, false);
544 def(_lsub , "lsub" , "b" , null , BasicType.getTLong() , -2, false);
545 def(_fsub , "fsub" , "b" , null , BasicType.getTFloat() , -1, false);
546 def(_dsub , "dsub" , "b" , null , BasicType.getTDouble() , -2, false);
547 def(_imul , "imul" , "b" , null , BasicType.getTInt() , -1, false);
548 def(_lmul , "lmul" , "b" , null , BasicType.getTLong() , -2, false);
549 def(_fmul , "fmul" , "b" , null , BasicType.getTFloat() , -1, false);
550 def(_dmul , "dmul" , "b" , null , BasicType.getTDouble() , -2, false);
551 def(_idiv , "idiv" , "b" , null , BasicType.getTInt() , -1, true );
552 def(_ldiv , "ldiv" , "b" , null , BasicType.getTLong() , -2, true );
553 def(_fdiv , "fdiv" , "b" , null , BasicType.getTFloat() , -1, false);
554 def(_ddiv , "ddiv" , "b" , null , BasicType.getTDouble() , -2, false);
555 def(_irem , "irem" , "b" , null , BasicType.getTInt() , -1, true );
556 def(_lrem , "lrem" , "b" , null , BasicType.getTLong() , -2, true );
557 def(_frem , "frem" , "b" , null , BasicType.getTFloat() , -1, false);
558 def(_drem , "drem" , "b" , null , BasicType.getTDouble() , -2, false);
559 def(_ineg , "ineg" , "b" , null , BasicType.getTInt() , 0, false);
560 def(_lneg , "lneg" , "b" , null , BasicType.getTLong() , 0, false);
561 def(_fneg , "fneg" , "b" , null , BasicType.getTFloat() , 0, false);
562 def(_dneg , "dneg" , "b" , null , BasicType.getTDouble() , 0, false);
563 def(_ishl , "ishl" , "b" , null , BasicType.getTInt() , -1, false);
564 def(_lshl , "lshl" , "b" , null , BasicType.getTLong() , -1, false);
565 def(_ishr , "ishr" , "b" , null , BasicType.getTInt() , -1, false);
566 def(_lshr , "lshr" , "b" , null , BasicType.getTLong() , -1, false);
567 def(_iushr , "iushr" , "b" , null , BasicType.getTInt() , -1, false);
568 def(_lushr , "lushr" , "b" , null , BasicType.getTLong() , -1, false);
569 def(_iand , "iand" , "b" , null , BasicType.getTInt() , -1, false);
570 def(_land , "land" , "b" , null , BasicType.getTLong() , -2, false);
571 def(_ior , "ior" , "b" , null , BasicType.getTInt() , -1, false);
572 def(_lor , "lor" , "b" , null , BasicType.getTLong() , -2, false);
573 def(_ixor , "ixor" , "b" , null , BasicType.getTInt() , -1, false);
574 def(_lxor , "lxor" , "b" , null , BasicType.getTLong() , -2, false);
575 def(_iinc , "iinc" , "bic" , "wbiicc", BasicType.getTVoid() , 0, false);
576 def(_i2l , "i2l" , "b" , null , BasicType.getTLong() , 1, false);
577 def(_i2f , "i2f" , "b" , null , BasicType.getTFloat() , 0, false);
578 def(_i2d , "i2d" , "b" , null , BasicType.getTDouble() , 1, false);
579 def(_l2i , "l2i" , "b" , null , BasicType.getTInt() , -1, false);
580 def(_l2f , "l2f" , "b" , null , BasicType.getTFloat() , -1, false);
581 def(_l2d , "l2d" , "b" , null , BasicType.getTDouble() , 0, false);
582 def(_f2i , "f2i" , "b" , null , BasicType.getTInt() , 0, false);
583 def(_f2l , "f2l" , "b" , null , BasicType.getTLong() , 1, false);
584 def(_f2d , "f2d" , "b" , null , BasicType.getTDouble() , 1, false);
585 def(_d2i , "d2i" , "b" , null , BasicType.getTInt() , -1, false);
586 def(_d2l , "d2l" , "b" , null , BasicType.getTLong() , 0, false);
587 def(_d2f , "d2f" , "b" , null , BasicType.getTFloat() , -1, false);
588 def(_i2b , "i2b" , "b" , null , BasicType.getTByte() , 0, false);
589 def(_i2c , "i2c" , "b" , null , BasicType.getTChar() , 0, false);
590 def(_i2s , "i2s" , "b" , null , BasicType.getTShort() , 0, false);
591 def(_lcmp , "lcmp" , "b" , null , BasicType.getTVoid() , -3, false);
592 def(_fcmpl , "fcmpl" , "b" , null , BasicType.getTVoid() , -1, false);
593 def(_fcmpg , "fcmpg" , "b" , null , BasicType.getTVoid() , -1, false);
594 def(_dcmpl , "dcmpl" , "b" , null , BasicType.getTVoid() , -3, false);
595 def(_dcmpg , "dcmpg" , "b" , null , BasicType.getTVoid() , -3, false);
596 def(_ifeq , "ifeq" , "boo" , null , BasicType.getTVoid() , -1, false);
597 def(_ifne , "ifne" , "boo" , null , BasicType.getTVoid() , -1, false);
598 def(_iflt , "iflt" , "boo" , null , BasicType.getTVoid() , -1, false);
599 def(_ifge , "ifge" , "boo" , null , BasicType.getTVoid() , -1, false);
600 def(_ifgt , "ifgt" , "boo" , null , BasicType.getTVoid() , -1, false);
601 def(_ifle , "ifle" , "boo" , null , BasicType.getTVoid() , -1, false);
602 def(_if_icmpeq , "if_icmpeq" , "boo" , null , BasicType.getTVoid() , -2, false);
603 def(_if_icmpne , "if_icmpne" , "boo" , null , BasicType.getTVoid() , -2, false);
604 def(_if_icmplt , "if_icmplt" , "boo" , null , BasicType.getTVoid() , -2, false);
605 def(_if_icmpge , "if_icmpge" , "boo" , null , BasicType.getTVoid() , -2, false);
606 def(_if_icmpgt , "if_icmpgt" , "boo" , null , BasicType.getTVoid() , -2, false);
607 def(_if_icmple , "if_icmple" , "boo" , null , BasicType.getTVoid() , -2, false);
608 def(_if_acmpeq , "if_acmpeq" , "boo" , null , BasicType.getTVoid() , -2, false);
609 def(_if_acmpne , "if_acmpne" , "boo" , null , BasicType.getTVoid() , -2, false);
610 def(_goto , "goto" , "boo" , null , BasicType.getTVoid() , 0, false);
611 def(_jsr , "jsr" , "boo" , null , BasicType.getTInt() , 0, false);
612 def(_ret , "ret" , "bi" , "wbii" , BasicType.getTVoid() , 0, false);
613 def(_tableswitch , "tableswitch" , "" , null , BasicType.getTVoid() , -1, false); // may have backward branches
614 def(_lookupswitch , "lookupswitch" , "" , null , BasicType.getTVoid() , -1, false); // rewriting in interpreter
615 def(_ireturn , "ireturn" , "b" , null , BasicType.getTInt() , -1, true );
616 def(_lreturn , "lreturn" , "b" , null , BasicType.getTLong() , -2, true );
617 def(_freturn , "freturn" , "b" , null , BasicType.getTFloat() , -1, true );
618 def(_dreturn , "dreturn" , "b" , null , BasicType.getTDouble() , -2, true );
619 def(_areturn , "areturn" , "b" , null , BasicType.getTObject() , -1, true );
620 def(_return , "return" , "b" , null , BasicType.getTVoid() , 0, true );
621 def(_getstatic , "getstatic" , "bjj" , null , BasicType.getTIllegal(), 1, true );
622 def(_putstatic , "putstatic" , "bjj" , null , BasicType.getTIllegal(), -1, true );
623 def(_getfield , "getfield" , "bjj" , null , BasicType.getTIllegal(), 0, true );
624 def(_putfield , "putfield" , "bjj" , null , BasicType.getTIllegal(), -2, true );
625 def(_invokevirtual , "invokevirtual" , "bjj" , null , BasicType.getTIllegal(), -1, true );
626 def(_invokespecial , "invokespecial" , "bjj" , null , BasicType.getTIllegal(), -1, true );
627 def(_invokestatic , "invokestatic" , "bjj" , null , BasicType.getTIllegal(), 0, true );
628 def(_invokeinterface , "invokeinterface" , "bjj__", null , BasicType.getTIllegal(), -1, true );
629 def(_xxxunusedxxx , "xxxunusedxxx" , null , null , BasicType.getTVoid() , 0, false);
630 def(_new , "new" , "bii" , null , BasicType.getTObject() , 1, true );
631 def(_newarray , "newarray" , "bc" , null , BasicType.getTObject() , 0, true );
632 def(_anewarray , "anewarray" , "bii" , null , BasicType.getTObject() , 0, true );
633 def(_arraylength , "arraylength" , "b" , null , BasicType.getTVoid() , 0, true );
634 def(_athrow , "athrow" , "b" , null , BasicType.getTVoid() , -1, true );
635 def(_checkcast , "checkcast" , "bii" , null , BasicType.getTObject() , 0, true );
636 def(_instanceof , "instanceof" , "bii" , null , BasicType.getTInt() , 0, true );
637 def(_monitorenter , "monitorenter" , "b" , null , BasicType.getTVoid() , -1, true );
638 def(_monitorexit , "monitorexit" , "b" , null , BasicType.getTVoid() , -1, true );
639 def(_wide , "wide" , "" , null , BasicType.getTVoid() , 0, false);
640 def(_multianewarray , "multianewarray" , "biic" , null , BasicType.getTObject() , 1, true );
641 def(_ifnull , "ifnull" , "boo" , null , BasicType.getTVoid() , -1, false);
642 def(_ifnonnull , "ifnonnull" , "boo" , null , BasicType.getTVoid() , -1, false);
643 def(_goto_w , "goto_w" , "boooo", null , BasicType.getTVoid() , 0, false);
644 def(_jsr_w , "jsr_w" , "boooo", null , BasicType.getTInt() , 0, false);
645 def(_breakpoint , "breakpoint" , "" , null , BasicType.getTVoid() , 0, true );
646
647 // JVM bytecodes
648 // bytecode bytecode name format wide f. result tp stk traps std code
649 def(_fast_agetfield , "fast_agetfield" , "bjj" , null , BasicType.getTObject() , 0, true , _getfield );
650 def(_fast_bgetfield , "fast_bgetfield" , "bjj" , null , BasicType.getTInt() , 0, true , _getfield );
651 def(_fast_cgetfield , "fast_cgetfield" , "bjj" , null , BasicType.getTChar() , 0, true , _getfield );
652 def(_fast_dgetfield , "fast_dgetfield" , "bjj" , null , BasicType.getTDouble() , 0, true , _getfield );
653 def(_fast_fgetfield , "fast_fgetfield" , "bjj" , null , BasicType.getTFloat() , 0, true , _getfield );
654 def(_fast_igetfield , "fast_igetfield" , "bjj" , null , BasicType.getTInt() , 0, true , _getfield );
655 def(_fast_lgetfield , "fast_lgetfield" , "bjj" , null , BasicType.getTLong() , 0, true , _getfield );
656 def(_fast_sgetfield , "fast_sgetfield" , "bjj" , null , BasicType.getTShort() , 0, true , _getfield );
657
658 def(_fast_aputfield , "fast_aputfield" , "bjj" , null , BasicType.getTObject() , 0, true , _putfield );
659 def(_fast_bputfield , "fast_bputfield" , "bjj" , null , BasicType.getTInt() , 0, true , _putfield );
660 def(_fast_cputfield , "fast_cputfield" , "bjj" , null , BasicType.getTChar() , 0, true , _putfield );
661 def(_fast_dputfield , "fast_dputfield" , "bjj" , null , BasicType.getTDouble() , 0, true , _putfield );
662 def(_fast_fputfield , "fast_fputfield" , "bjj" , null , BasicType.getTFloat() , 0, true , _putfield );
663 def(_fast_iputfield , "fast_iputfield" , "bjj" , null , BasicType.getTInt() , 0, true , _putfield );
664 def(_fast_lputfield , "fast_lputfield" , "bjj" , null , BasicType.getTLong() , 0, true , _putfield );
665 def(_fast_sputfield , "fast_sputfield" , "bjj" , null , BasicType.getTShort() , 0, true , _putfield );
666
667 def(_fast_aload_0 , "fast_aload_0" , "b" , null , BasicType.getTObject() , 1, true , _aload_0 );
668 def(_fast_iaccess_0 , "fast_iaccess_0" , "b_jj" , null , BasicType.getTInt() , 1, true , _aload_0 );
669 def(_fast_aaccess_0 , "fast_aaccess_0" , "b_jj" , null , BasicType.getTObject() , 1, true , _aload_0 );
670 def(_fast_faccess_0 , "fast_faccess_0" , "b_jj" , null , BasicType.getTObject() , 1, true , _aload_0 );
671
672 def(_fast_iload , "fast_iload" , "bi" , null , BasicType.getTInt() , 1, false, _iload);
673 def(_fast_iload2 , "fast_iload2" , "bi_i" , null , BasicType.getTInt() , 2, false, _iload);
674 def(_fast_icaload , "fast_icaload" , "bi_" , null , BasicType.getTInt() , 0, false, _iload);
675
676 // Faster method invocation.
677 def(_fast_invokevfinal , "fast_invokevfinal" , "bjj" , null , BasicType.getTIllegal(), -1, true, _invokevirtual);
678
679 def(_fast_linearswitch , "fast_linearswitch" , "" , null , BasicType.getTVoid() , -1, false, _lookupswitch );
680 def(_fast_binaryswitch , "fast_binaryswitch" , "" , null , BasicType.getTVoid() , -1, false, _lookupswitch );
681 def(_shouldnotreachhere , "_shouldnotreachhere" , "b" , null , BasicType.getTVoid() , 0, false);
682
683 if (Assert.ASSERTS_ENABLED) {
684 // compare can_trap information for each bytecode with the
685 // can_trap information for the corresponding base bytecode
686 // (if a rewritten bytecode can trap, so must the base bytecode)
687 for (int i = 0; i < number_of_codes; i++) {
688 if (isDefined(i)) {
689 int j = javaCode(i);
690 if (canTrap(i) && !canTrap(j)) {
691 Assert.that(false, name(i) + " can trap => " + name(j) + " can trap, too");
692 }
693 }
694 }
695 }
696 }
697
698 private static void def(int code, String name, String format, String wide_format, int result_type, int depth, boolean can_trap) {
699 def(code, name, format, wide_format, result_type, depth, can_trap, code);
700 }
701
702 private static void def(int code, String name, String format, String wide_format, int result_type, int depth, boolean can_trap, int java_code) {
703 if (Assert.ASSERTS_ENABLED) {
704 Assert.that(wide_format == null || format != null, "short form must exist if there's a wide form");
705 }
706 _name [code] = name;
707 _format [code] = format;
708 _wide_format [code] = wide_format;
709 _result_type [code] = result_type;
710 _depth [code] = (byte) depth;
711 _can_trap [code] = can_trap;
712 _length [code] = (byte) (format != null ? format.length() : 0);
713 _java_code [code] = java_code;
714 if (java_code != code) {
715 _can_rewrite[java_code] = true;
716 } else {
717 _can_rewrite[java_code] = false;
718 }
719 }
720 }