Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/interpreter/Bytecodes.java @ 11997:cd25d3be91c5
8012144: multiple SIGSEGVs fails on staxf
Summary: Forward port of 7u change to add additional fence() on RMO platforms, with a load_acquire on all platforms
Reviewed-by: dholmes, kvn
author | vladidan |
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date | Tue, 06 Aug 2013 20:01:40 -0400 |
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0 | 1 /* |
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2 * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 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 | |
1602 | 225 public static final int _invokedynamic = 186; // 0xba |
0 | 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; | |
1602 | 272 public static final int _fast_aldc = 229; |
273 public static final int _fast_aldc_w = 230; | |
274 public static final int _return_register_finalizer = 231; | |
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275 public static final int _invokehandle = 232; |
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276 public static final int _shouldnotreachhere = 233; // For debugging |
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278 public static final int number_of_codes = 234; |
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280 // Flag bits derived from format strings, can_trap, can_rewrite, etc.: |
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281 // semantic flags: |
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282 static final int _bc_can_trap = 1<<0; // bytecode execution can trap or block |
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283 static final int _bc_can_rewrite = 1<<1; // bytecode execution has an alternate form |
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284 |
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285 // format bits (determined only by the format string): |
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286 static final int _fmt_has_c = 1<<2; // constant, such as sipush "bcc" |
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287 static final int _fmt_has_j = 1<<3; // constant pool cache index, such as getfield "bjj" |
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288 static final int _fmt_has_k = 1<<4; // constant pool index, such as ldc "bk" |
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289 static final int _fmt_has_i = 1<<5; // local index, such as iload |
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290 static final int _fmt_has_o = 1<<6; // offset, such as ifeq |
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291 static final int _fmt_has_nbo = 1<<7; // contains native-order field(s) |
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292 static final int _fmt_has_u2 = 1<<8; // contains double-byte field(s) |
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293 static final int _fmt_has_u4 = 1<<9; // contains quad-byte field |
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294 static final int _fmt_not_variable = 1<<10; // not of variable length (simple or wide) |
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295 static final int _fmt_not_simple = 1<<11; // either wide or variable length |
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296 static final int _all_fmt_bits = (_fmt_not_simple*2 - _fmt_has_c); |
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297 |
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298 // Example derived format syndromes: |
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299 static final int _fmt_b = _fmt_not_variable; |
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300 static final int _fmt_bc = _fmt_b | _fmt_has_c; |
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301 static final int _fmt_bi = _fmt_b | _fmt_has_i; |
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302 static final int _fmt_bkk = _fmt_b | _fmt_has_k | _fmt_has_u2; |
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303 static final int _fmt_bJJ = _fmt_b | _fmt_has_j | _fmt_has_u2 | _fmt_has_nbo; |
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304 static final int _fmt_bo2 = _fmt_b | _fmt_has_o | _fmt_has_u2; |
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305 static final int _fmt_bo4 = _fmt_b | _fmt_has_o | _fmt_has_u4; |
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306 |
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307 |
0 | 308 public static int specialLengthAt(Method method, int bci) { |
309 int code = codeAt(method, bci); | |
310 switch (code) { | |
311 case _wide: | |
312 return wideLengthFor(method.getBytecodeOrBPAt(bci + 1)); | |
313 case _tableswitch: | |
314 { | |
315 int alignedBCI = Bits.roundTo(bci + 1, jintSize); | |
316 int lo = method.getBytecodeIntArg(alignedBCI + 1*jintSize); | |
317 int hi = method.getBytecodeIntArg(alignedBCI + 2*jintSize); | |
318 return (alignedBCI - bci) + (3 + hi - lo + 1)*jintSize; | |
319 } | |
320 | |
321 case _lookupswitch: // fall through | |
322 case _fast_binaryswitch: // fall through | |
323 case _fast_linearswitch: | |
324 { | |
325 int alignedBCI = Bits.roundTo(bci + 1, jintSize); | |
326 int npairs = method.getBytecodeIntArg(alignedBCI + jintSize); | |
327 return (alignedBCI - bci) + (2 + 2*npairs)*jintSize; | |
328 } | |
329 | |
330 } | |
331 throw new RuntimeException("should not reach here"); | |
332 } | |
333 | |
334 // Conversion | |
335 public static void check(int code) { | |
336 if (Assert.ASSERTS_ENABLED) { | |
337 Assert.that(isDefined(code), "illegal code " + code); | |
338 } | |
339 } | |
340 public static void wideCheck(int code) { | |
341 if (Assert.ASSERTS_ENABLED) { | |
342 Assert.that(wideIsDefined(code), "illegal code " + code); | |
343 } | |
344 } | |
345 | |
346 /** Fetches a bytecode, hiding breakpoints as necessary */ | |
347 public static int codeAt(Method method, int bci) { | |
348 int res = codeOrBPAt(method, bci); | |
349 if (res == _breakpoint) { | |
350 res = method.getOrigBytecodeAt(bci); | |
351 } | |
352 return res; | |
353 } | |
354 | |
355 /** Fetches a bytecode or a breakpoint */ | |
356 public static int codeOrBPAt(Method method, int bci) { | |
357 return method.getBytecodeOrBPAt(bci); | |
358 } | |
359 | |
360 public static boolean isActiveBreakpointAt(Method method, int bci) { | |
361 return (codeOrBPAt(method, bci) == _breakpoint); | |
362 } | |
363 | |
364 // find a bytecode, behind a breakpoint if necessary: | |
365 // FIXME: not yet implementable | |
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366 // static Code non_breakpoint_code_at(address bcp, Method* method = null); |
0 | 367 |
368 // Bytecode attributes | |
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369 public static boolean isDefined (int code) { return 0 <= code && code < number_of_codes && flags(code, false) != 0; } |
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370 public static boolean wideIsDefined(int code) { return isDefined(code) && flags(code, true) != 0; } |
0 | 371 public static String name (int code) { check(code); return _name [code]; } |
372 public static String format (int code) { check(code); return _format [code]; } | |
373 public static String wideFormat (int code) { wideCheck(code); return _wide_format [code]; } | |
374 public static int resultType (int code) { check(code); return _result_type [code]; } | |
375 public static int depth (int code) { check(code); return _depth [code]; } | |
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376 public static int lengthFor (int code) { check(code); return _lengths [code] & 0xF; } |
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377 public static int wideLengthFor(int code) { check(code); return _lengths [code] >> 4; } |
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378 public static boolean canTrap (int code) { check(code); return has_all_flags(code, _bc_can_trap, false); } |
0 | 379 public static int javaCode (int code) { check(code); return _java_code [code]; } |
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380 public static boolean canRewrite (int code) { check(code); return has_all_flags(code, _bc_can_rewrite, false); } |
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381 public static boolean native_byte_order(int code) { check(code); return has_all_flags(code, _fmt_has_nbo, false); } |
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382 public static boolean uses_cp_cache (int code) { check(code); return has_all_flags(code, _fmt_has_j, false); } |
0 | 383 public static int lengthAt (Method method, int bci) { int l = lengthFor(codeAt(method, bci)); return l > 0 ? l : specialLengthAt(method, bci); } |
384 public static int javaLengthAt (Method method, int bci) { int l = lengthFor(javaCode(codeAt(method, bci))); return l > 0 ? l : specialLengthAt(method, bci); } | |
385 public static boolean isJavaCode (int code) { return 0 <= code && code < number_of_java_codes; } | |
386 public static boolean isFastCode (int code) { return number_of_java_codes <= code && code < number_of_codes; } | |
387 | |
388 public static boolean isAload (int code) { return (code == _aload || code == _aload_0 || code == _aload_1 | |
389 || code == _aload_2 || code == _aload_3); } | |
390 public static boolean isAstore (int code) { return (code == _astore || code == _astore_0 || code == _astore_1 | |
391 || code == _astore_2 || code == _astore_3); } | |
392 | |
393 public static boolean isZeroConst (int code) { return (code == _aconst_null || code == _iconst_0 | |
394 || code == _fconst_0 || code == _dconst_0); } | |
395 | |
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396 static int flags (int code, boolean is_wide) { |
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397 assert code == (code & 0xff) : "must be a byte"; |
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398 return _flags[code + (is_wide ? 256 : 0)]; |
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399 } |
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400 static int format_bits (int code, boolean is_wide) { return flags(code, is_wide) & _all_fmt_bits; } |
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401 static boolean has_all_flags (int code, int test_flags, boolean is_wide) { |
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402 return (flags(code, is_wide) & test_flags) == test_flags; |
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403 } |
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404 |
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405 static char compute_flags(String format) { |
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406 return compute_flags(format, 0); |
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407 } |
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408 static char compute_flags(String format, int more_flags) { |
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409 if (format == null) return 0; // not even more_flags |
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410 int flags = more_flags; |
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411 int fp = 0; |
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412 if (format.length() == 0) { |
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413 flags |= _fmt_not_simple; // but variable |
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414 } else { |
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415 switch (format.charAt(fp)) { |
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416 case 'b': |
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417 flags |= _fmt_not_variable; // but simple |
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418 ++fp; // skip 'b' |
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419 break; |
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420 case 'w': |
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421 flags |= _fmt_not_variable | _fmt_not_simple; |
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422 ++fp; // skip 'w' |
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423 assert(format.charAt(fp) == 'b') : "wide format must start with 'wb'"; |
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424 ++fp; // skip 'b' |
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425 break; |
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426 } |
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427 } |
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428 |
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429 boolean has_nbo = false, has_jbo = false; |
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430 int has_size = 0; |
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431 while (fp < format.length()) { |
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432 int this_flag = 0; |
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433 char fc = format.charAt(fp++); |
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434 switch (fc) { |
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435 case '_': continue; // ignore these |
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436 |
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437 case 'j': this_flag = _fmt_has_j; has_jbo = true; break; |
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438 case 'k': this_flag = _fmt_has_k; has_jbo = true; break; |
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439 case 'i': this_flag = _fmt_has_i; has_jbo = true; break; |
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440 case 'c': this_flag = _fmt_has_c; has_jbo = true; break; |
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441 case 'o': this_flag = _fmt_has_o; has_jbo = true; break; |
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442 |
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443 // uppercase versions mark native byte order (from Rewriter) |
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444 // actually, only the 'J' case happens currently |
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445 case 'J': this_flag = _fmt_has_j; has_nbo = true; break; |
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446 case 'K': this_flag = _fmt_has_k; has_nbo = true; break; |
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447 case 'I': this_flag = _fmt_has_i; has_nbo = true; break; |
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448 case 'C': this_flag = _fmt_has_c; has_nbo = true; break; |
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449 case 'O': this_flag = _fmt_has_o; has_nbo = true; break; |
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450 default: assert false : "bad char in format"; |
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451 } |
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452 |
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453 flags |= this_flag; |
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454 |
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455 assert !(has_jbo && has_nbo) : "mixed byte orders in format"; |
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456 if (has_nbo) |
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457 flags |= _fmt_has_nbo; |
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458 |
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459 int this_size = 1; |
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460 if (fp < format.length() && format.charAt(fp) == fc) { |
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461 // advance beyond run of the same characters |
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462 this_size = 2; |
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463 while (fp + 1 < format.length() && format.charAt(++fp) == fc) this_size++; |
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464 switch (this_size) { |
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465 case 2: flags |= _fmt_has_u2; break; |
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466 case 4: flags |= _fmt_has_u4; break; |
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467 default: assert false : "bad rep count in format"; |
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468 } |
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469 } |
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470 assert has_size == 0 || // no field yet |
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471 this_size == has_size || // same size |
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472 this_size < has_size && fp == format.length() : // last field can be short |
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473 "mixed field sizes in format"; |
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474 has_size = this_size; |
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475 } |
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476 |
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477 assert flags == (char)flags : "change _format_flags"; |
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478 return (char)flags; |
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479 } |
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480 |
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481 |
0 | 482 //---------------------------------------------------------------------- |
483 // Internals only below this point | |
484 // | |
485 | |
486 private static String[] _name; | |
487 private static String[] _format; | |
488 private static String[] _wide_format; | |
489 private static int[] _result_type; | |
490 private static byte[] _depth; | |
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491 private static byte[] _lengths; |
0 | 492 private static int[] _java_code; |
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493 private static char[] _flags; |
0 | 494 |
495 static { | |
496 _name = new String [number_of_codes]; | |
497 _format = new String [number_of_codes]; | |
498 _wide_format = new String [number_of_codes]; | |
499 _result_type = new int [number_of_codes]; // See BasicType.java | |
500 _depth = new byte [number_of_codes]; | |
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501 _lengths = new byte [number_of_codes]; |
0 | 502 _java_code = new int [number_of_codes]; |
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503 _flags = new char[256 * 2]; // all second page for wide formats |
0 | 504 |
505 // In case we want to fetch this information from the VM in the | |
506 // future | |
507 VM.registerVMInitializedObserver(new Observer() { | |
508 public void update(Observable o, Object data) { | |
509 initialize(); | |
510 } | |
511 }); | |
512 } | |
513 | |
514 private static final int jintSize = 4; | |
515 | |
516 // private static String[] _name = new String [number_of_codes]; | |
517 // private static String[] _format = new String [number_of_codes]; | |
518 // private static String[] _wide_format = new String [number_of_codes]; | |
519 // private static int[] _result_type = new int [number_of_codes]; // See BasicType.java | |
520 // private static byte[] _depth = new byte [number_of_codes]; | |
521 // private static byte[] _length = new byte [number_of_codes]; | |
522 // private static boolean[] _can_trap = new boolean[number_of_codes]; | |
523 // private static int[] _java_code = new int [number_of_codes]; | |
524 // private static boolean[] _can_rewrite = new boolean[number_of_codes]; | |
525 | |
526 // Initialization | |
527 private static void initialize() { | |
528 if (Assert.ASSERTS_ENABLED) { | |
529 Assert.that(number_of_codes <= 256, "too many bytecodes"); | |
530 } | |
531 | |
532 // Format strings interpretation: | |
533 // | |
534 // b: bytecode | |
535 // c: signed constant, Java byte-ordering | |
536 // i: unsigned index , Java byte-ordering | |
537 // j: unsigned index , native byte-ordering | |
538 // o: branch offset , Java byte-ordering | |
539 // _: unused/ignored | |
540 // w: wide bytecode | |
541 // | |
542 // Note: Right now the format strings are used for 2 purposes: | |
543 // 1. to specify the length of the bytecode | |
544 // (= number of characters in format string) | |
545 // 2. to specify the bytecode attributes | |
546 // | |
547 // The bytecode attributes are currently used only for bytecode tracing | |
548 // (see BytecodeTracer); thus if more specific format information is | |
549 // used, one would also have to adjust the bytecode tracer. | |
550 // | |
551 // Note: For bytecodes with variable length, the format string is the empty string. | |
552 | |
553 // Note 1: null for the format string means the bytecode doesn't exist | |
554 // in that form. | |
555 // | |
556 // Note 2: The result type is T_ILLEGAL for bytecodes where the top of stack | |
557 // type after execution is not only determined by the bytecode itself. | |
558 | |
559 // Java bytecodes | |
560 // bytecode bytecode name format wide f. result tp stk traps | |
561 def(_nop , "nop" , "b" , null , BasicType.getTVoid() , 0, false); | |
562 def(_aconst_null , "aconst_null" , "b" , null , BasicType.getTObject() , 1, false); | |
563 def(_iconst_m1 , "iconst_m1" , "b" , null , BasicType.getTInt() , 1, false); | |
564 def(_iconst_0 , "iconst_0" , "b" , null , BasicType.getTInt() , 1, false); | |
565 def(_iconst_1 , "iconst_1" , "b" , null , BasicType.getTInt() , 1, false); | |
566 def(_iconst_2 , "iconst_2" , "b" , null , BasicType.getTInt() , 1, false); | |
567 def(_iconst_3 , "iconst_3" , "b" , null , BasicType.getTInt() , 1, false); | |
568 def(_iconst_4 , "iconst_4" , "b" , null , BasicType.getTInt() , 1, false); | |
569 def(_iconst_5 , "iconst_5" , "b" , null , BasicType.getTInt() , 1, false); | |
570 def(_lconst_0 , "lconst_0" , "b" , null , BasicType.getTLong() , 2, false); | |
571 def(_lconst_1 , "lconst_1" , "b" , null , BasicType.getTLong() , 2, false); | |
572 def(_fconst_0 , "fconst_0" , "b" , null , BasicType.getTFloat() , 1, false); | |
573 def(_fconst_1 , "fconst_1" , "b" , null , BasicType.getTFloat() , 1, false); | |
574 def(_fconst_2 , "fconst_2" , "b" , null , BasicType.getTFloat() , 1, false); | |
575 def(_dconst_0 , "dconst_0" , "b" , null , BasicType.getTDouble() , 2, false); | |
576 def(_dconst_1 , "dconst_1" , "b" , null , BasicType.getTDouble() , 2, false); | |
577 def(_bipush , "bipush" , "bc" , null , BasicType.getTInt() , 1, false); | |
578 def(_sipush , "sipush" , "bcc" , null , BasicType.getTInt() , 1, false); | |
1602 | 579 def(_ldc , "ldc" , "bk" , null , BasicType.getTIllegal(), 1, true ); |
580 def(_ldc_w , "ldc_w" , "bkk" , null , BasicType.getTIllegal(), 1, true ); | |
581 def(_ldc2_w , "ldc2_w" , "bkk" , null , BasicType.getTIllegal(), 2, true ); | |
0 | 582 def(_iload , "iload" , "bi" , "wbii" , BasicType.getTInt() , 1, false); |
583 def(_lload , "lload" , "bi" , "wbii" , BasicType.getTLong() , 2, false); | |
584 def(_fload , "fload" , "bi" , "wbii" , BasicType.getTFloat() , 1, false); | |
585 def(_dload , "dload" , "bi" , "wbii" , BasicType.getTDouble() , 2, false); | |
586 def(_aload , "aload" , "bi" , "wbii" , BasicType.getTObject() , 1, false); | |
587 def(_iload_0 , "iload_0" , "b" , null , BasicType.getTInt() , 1, false); | |
588 def(_iload_1 , "iload_1" , "b" , null , BasicType.getTInt() , 1, false); | |
589 def(_iload_2 , "iload_2" , "b" , null , BasicType.getTInt() , 1, false); | |
590 def(_iload_3 , "iload_3" , "b" , null , BasicType.getTInt() , 1, false); | |
591 def(_lload_0 , "lload_0" , "b" , null , BasicType.getTLong() , 2, false); | |
592 def(_lload_1 , "lload_1" , "b" , null , BasicType.getTLong() , 2, false); | |
593 def(_lload_2 , "lload_2" , "b" , null , BasicType.getTLong() , 2, false); | |
594 def(_lload_3 , "lload_3" , "b" , null , BasicType.getTLong() , 2, false); | |
595 def(_fload_0 , "fload_0" , "b" , null , BasicType.getTFloat() , 1, false); | |
596 def(_fload_1 , "fload_1" , "b" , null , BasicType.getTFloat() , 1, false); | |
597 def(_fload_2 , "fload_2" , "b" , null , BasicType.getTFloat() , 1, false); | |
598 def(_fload_3 , "fload_3" , "b" , null , BasicType.getTFloat() , 1, false); | |
599 def(_dload_0 , "dload_0" , "b" , null , BasicType.getTDouble() , 2, false); | |
600 def(_dload_1 , "dload_1" , "b" , null , BasicType.getTDouble() , 2, false); | |
601 def(_dload_2 , "dload_2" , "b" , null , BasicType.getTDouble() , 2, false); | |
602 def(_dload_3 , "dload_3" , "b" , null , BasicType.getTDouble() , 2, false); | |
603 def(_aload_0 , "aload_0" , "b" , null , BasicType.getTObject() , 1, true ); // rewriting in interpreter | |
604 def(_aload_1 , "aload_1" , "b" , null , BasicType.getTObject() , 1, false); | |
605 def(_aload_2 , "aload_2" , "b" , null , BasicType.getTObject() , 1, false); | |
606 def(_aload_3 , "aload_3" , "b" , null , BasicType.getTObject() , 1, false); | |
607 def(_iaload , "iaload" , "b" , null , BasicType.getTInt() , -1, true ); | |
608 def(_laload , "laload" , "b" , null , BasicType.getTLong() , 0, true ); | |
609 def(_faload , "faload" , "b" , null , BasicType.getTFloat() , -1, true ); | |
610 def(_daload , "daload" , "b" , null , BasicType.getTDouble() , 0, true ); | |
611 def(_aaload , "aaload" , "b" , null , BasicType.getTObject() , -1, true ); | |
612 def(_baload , "baload" , "b" , null , BasicType.getTInt() , -1, true ); | |
613 def(_caload , "caload" , "b" , null , BasicType.getTInt() , -1, true ); | |
614 def(_saload , "saload" , "b" , null , BasicType.getTInt() , -1, true ); | |
615 def(_istore , "istore" , "bi" , "wbii" , BasicType.getTVoid() , -1, false); | |
616 def(_lstore , "lstore" , "bi" , "wbii" , BasicType.getTVoid() , -2, false); | |
617 def(_fstore , "fstore" , "bi" , "wbii" , BasicType.getTVoid() , -1, false); | |
618 def(_dstore , "dstore" , "bi" , "wbii" , BasicType.getTVoid() , -2, false); | |
619 def(_astore , "astore" , "bi" , "wbii" , BasicType.getTVoid() , -1, false); | |
620 def(_istore_0 , "istore_0" , "b" , null , BasicType.getTVoid() , -1, false); | |
621 def(_istore_1 , "istore_1" , "b" , null , BasicType.getTVoid() , -1, false); | |
622 def(_istore_2 , "istore_2" , "b" , null , BasicType.getTVoid() , -1, false); | |
623 def(_istore_3 , "istore_3" , "b" , null , BasicType.getTVoid() , -1, false); | |
624 def(_lstore_0 , "lstore_0" , "b" , null , BasicType.getTVoid() , -2, false); | |
625 def(_lstore_1 , "lstore_1" , "b" , null , BasicType.getTVoid() , -2, false); | |
626 def(_lstore_2 , "lstore_2" , "b" , null , BasicType.getTVoid() , -2, false); | |
627 def(_lstore_3 , "lstore_3" , "b" , null , BasicType.getTVoid() , -2, false); | |
628 def(_fstore_0 , "fstore_0" , "b" , null , BasicType.getTVoid() , -1, false); | |
629 def(_fstore_1 , "fstore_1" , "b" , null , BasicType.getTVoid() , -1, false); | |
630 def(_fstore_2 , "fstore_2" , "b" , null , BasicType.getTVoid() , -1, false); | |
631 def(_fstore_3 , "fstore_3" , "b" , null , BasicType.getTVoid() , -1, false); | |
632 def(_dstore_0 , "dstore_0" , "b" , null , BasicType.getTVoid() , -2, false); | |
633 def(_dstore_1 , "dstore_1" , "b" , null , BasicType.getTVoid() , -2, false); | |
634 def(_dstore_2 , "dstore_2" , "b" , null , BasicType.getTVoid() , -2, false); | |
635 def(_dstore_3 , "dstore_3" , "b" , null , BasicType.getTVoid() , -2, false); | |
636 def(_astore_0 , "astore_0" , "b" , null , BasicType.getTVoid() , -1, false); | |
637 def(_astore_1 , "astore_1" , "b" , null , BasicType.getTVoid() , -1, false); | |
638 def(_astore_2 , "astore_2" , "b" , null , BasicType.getTVoid() , -1, false); | |
639 def(_astore_3 , "astore_3" , "b" , null , BasicType.getTVoid() , -1, false); | |
640 def(_iastore , "iastore" , "b" , null , BasicType.getTVoid() , -3, true ); | |
641 def(_lastore , "lastore" , "b" , null , BasicType.getTVoid() , -4, true ); | |
642 def(_fastore , "fastore" , "b" , null , BasicType.getTVoid() , -3, true ); | |
643 def(_dastore , "dastore" , "b" , null , BasicType.getTVoid() , -4, true ); | |
644 def(_aastore , "aastore" , "b" , null , BasicType.getTVoid() , -3, true ); | |
645 def(_bastore , "bastore" , "b" , null , BasicType.getTVoid() , -3, true ); | |
646 def(_castore , "castore" , "b" , null , BasicType.getTVoid() , -3, true ); | |
647 def(_sastore , "sastore" , "b" , null , BasicType.getTVoid() , -3, true ); | |
648 def(_pop , "pop" , "b" , null , BasicType.getTVoid() , -1, false); | |
649 def(_pop2 , "pop2" , "b" , null , BasicType.getTVoid() , -2, false); | |
650 def(_dup , "dup" , "b" , null , BasicType.getTVoid() , 1, false); | |
651 def(_dup_x1 , "dup_x1" , "b" , null , BasicType.getTVoid() , 1, false); | |
652 def(_dup_x2 , "dup_x2" , "b" , null , BasicType.getTVoid() , 1, false); | |
653 def(_dup2 , "dup2" , "b" , null , BasicType.getTVoid() , 2, false); | |
654 def(_dup2_x1 , "dup2_x1" , "b" , null , BasicType.getTVoid() , 2, false); | |
655 def(_dup2_x2 , "dup2_x2" , "b" , null , BasicType.getTVoid() , 2, false); | |
656 def(_swap , "swap" , "b" , null , BasicType.getTVoid() , 0, false); | |
657 def(_iadd , "iadd" , "b" , null , BasicType.getTInt() , -1, false); | |
658 def(_ladd , "ladd" , "b" , null , BasicType.getTLong() , -2, false); | |
659 def(_fadd , "fadd" , "b" , null , BasicType.getTFloat() , -1, false); | |
660 def(_dadd , "dadd" , "b" , null , BasicType.getTDouble() , -2, false); | |
661 def(_isub , "isub" , "b" , null , BasicType.getTInt() , -1, false); | |
662 def(_lsub , "lsub" , "b" , null , BasicType.getTLong() , -2, false); | |
663 def(_fsub , "fsub" , "b" , null , BasicType.getTFloat() , -1, false); | |
664 def(_dsub , "dsub" , "b" , null , BasicType.getTDouble() , -2, false); | |
665 def(_imul , "imul" , "b" , null , BasicType.getTInt() , -1, false); | |
666 def(_lmul , "lmul" , "b" , null , BasicType.getTLong() , -2, false); | |
667 def(_fmul , "fmul" , "b" , null , BasicType.getTFloat() , -1, false); | |
668 def(_dmul , "dmul" , "b" , null , BasicType.getTDouble() , -2, false); | |
669 def(_idiv , "idiv" , "b" , null , BasicType.getTInt() , -1, true ); | |
670 def(_ldiv , "ldiv" , "b" , null , BasicType.getTLong() , -2, true ); | |
671 def(_fdiv , "fdiv" , "b" , null , BasicType.getTFloat() , -1, false); | |
672 def(_ddiv , "ddiv" , "b" , null , BasicType.getTDouble() , -2, false); | |
673 def(_irem , "irem" , "b" , null , BasicType.getTInt() , -1, true ); | |
674 def(_lrem , "lrem" , "b" , null , BasicType.getTLong() , -2, true ); | |
675 def(_frem , "frem" , "b" , null , BasicType.getTFloat() , -1, false); | |
676 def(_drem , "drem" , "b" , null , BasicType.getTDouble() , -2, false); | |
677 def(_ineg , "ineg" , "b" , null , BasicType.getTInt() , 0, false); | |
678 def(_lneg , "lneg" , "b" , null , BasicType.getTLong() , 0, false); | |
679 def(_fneg , "fneg" , "b" , null , BasicType.getTFloat() , 0, false); | |
680 def(_dneg , "dneg" , "b" , null , BasicType.getTDouble() , 0, false); | |
681 def(_ishl , "ishl" , "b" , null , BasicType.getTInt() , -1, false); | |
682 def(_lshl , "lshl" , "b" , null , BasicType.getTLong() , -1, false); | |
683 def(_ishr , "ishr" , "b" , null , BasicType.getTInt() , -1, false); | |
684 def(_lshr , "lshr" , "b" , null , BasicType.getTLong() , -1, false); | |
685 def(_iushr , "iushr" , "b" , null , BasicType.getTInt() , -1, false); | |
686 def(_lushr , "lushr" , "b" , null , BasicType.getTLong() , -1, false); | |
687 def(_iand , "iand" , "b" , null , BasicType.getTInt() , -1, false); | |
688 def(_land , "land" , "b" , null , BasicType.getTLong() , -2, false); | |
689 def(_ior , "ior" , "b" , null , BasicType.getTInt() , -1, false); | |
690 def(_lor , "lor" , "b" , null , BasicType.getTLong() , -2, false); | |
691 def(_ixor , "ixor" , "b" , null , BasicType.getTInt() , -1, false); | |
692 def(_lxor , "lxor" , "b" , null , BasicType.getTLong() , -2, false); | |
693 def(_iinc , "iinc" , "bic" , "wbiicc", BasicType.getTVoid() , 0, false); | |
694 def(_i2l , "i2l" , "b" , null , BasicType.getTLong() , 1, false); | |
695 def(_i2f , "i2f" , "b" , null , BasicType.getTFloat() , 0, false); | |
696 def(_i2d , "i2d" , "b" , null , BasicType.getTDouble() , 1, false); | |
697 def(_l2i , "l2i" , "b" , null , BasicType.getTInt() , -1, false); | |
698 def(_l2f , "l2f" , "b" , null , BasicType.getTFloat() , -1, false); | |
699 def(_l2d , "l2d" , "b" , null , BasicType.getTDouble() , 0, false); | |
700 def(_f2i , "f2i" , "b" , null , BasicType.getTInt() , 0, false); | |
701 def(_f2l , "f2l" , "b" , null , BasicType.getTLong() , 1, false); | |
702 def(_f2d , "f2d" , "b" , null , BasicType.getTDouble() , 1, false); | |
703 def(_d2i , "d2i" , "b" , null , BasicType.getTInt() , -1, false); | |
704 def(_d2l , "d2l" , "b" , null , BasicType.getTLong() , 0, false); | |
705 def(_d2f , "d2f" , "b" , null , BasicType.getTFloat() , -1, false); | |
706 def(_i2b , "i2b" , "b" , null , BasicType.getTByte() , 0, false); | |
707 def(_i2c , "i2c" , "b" , null , BasicType.getTChar() , 0, false); | |
708 def(_i2s , "i2s" , "b" , null , BasicType.getTShort() , 0, false); | |
709 def(_lcmp , "lcmp" , "b" , null , BasicType.getTVoid() , -3, false); | |
710 def(_fcmpl , "fcmpl" , "b" , null , BasicType.getTVoid() , -1, false); | |
711 def(_fcmpg , "fcmpg" , "b" , null , BasicType.getTVoid() , -1, false); | |
712 def(_dcmpl , "dcmpl" , "b" , null , BasicType.getTVoid() , -3, false); | |
713 def(_dcmpg , "dcmpg" , "b" , null , BasicType.getTVoid() , -3, false); | |
714 def(_ifeq , "ifeq" , "boo" , null , BasicType.getTVoid() , -1, false); | |
715 def(_ifne , "ifne" , "boo" , null , BasicType.getTVoid() , -1, false); | |
716 def(_iflt , "iflt" , "boo" , null , BasicType.getTVoid() , -1, false); | |
717 def(_ifge , "ifge" , "boo" , null , BasicType.getTVoid() , -1, false); | |
718 def(_ifgt , "ifgt" , "boo" , null , BasicType.getTVoid() , -1, false); | |
719 def(_ifle , "ifle" , "boo" , null , BasicType.getTVoid() , -1, false); | |
720 def(_if_icmpeq , "if_icmpeq" , "boo" , null , BasicType.getTVoid() , -2, false); | |
721 def(_if_icmpne , "if_icmpne" , "boo" , null , BasicType.getTVoid() , -2, false); | |
722 def(_if_icmplt , "if_icmplt" , "boo" , null , BasicType.getTVoid() , -2, false); | |
723 def(_if_icmpge , "if_icmpge" , "boo" , null , BasicType.getTVoid() , -2, false); | |
724 def(_if_icmpgt , "if_icmpgt" , "boo" , null , BasicType.getTVoid() , -2, false); | |
725 def(_if_icmple , "if_icmple" , "boo" , null , BasicType.getTVoid() , -2, false); | |
726 def(_if_acmpeq , "if_acmpeq" , "boo" , null , BasicType.getTVoid() , -2, false); | |
727 def(_if_acmpne , "if_acmpne" , "boo" , null , BasicType.getTVoid() , -2, false); | |
728 def(_goto , "goto" , "boo" , null , BasicType.getTVoid() , 0, false); | |
729 def(_jsr , "jsr" , "boo" , null , BasicType.getTInt() , 0, false); | |
730 def(_ret , "ret" , "bi" , "wbii" , BasicType.getTVoid() , 0, false); | |
731 def(_tableswitch , "tableswitch" , "" , null , BasicType.getTVoid() , -1, false); // may have backward branches | |
732 def(_lookupswitch , "lookupswitch" , "" , null , BasicType.getTVoid() , -1, false); // rewriting in interpreter | |
733 def(_ireturn , "ireturn" , "b" , null , BasicType.getTInt() , -1, true ); | |
734 def(_lreturn , "lreturn" , "b" , null , BasicType.getTLong() , -2, true ); | |
735 def(_freturn , "freturn" , "b" , null , BasicType.getTFloat() , -1, true ); | |
736 def(_dreturn , "dreturn" , "b" , null , BasicType.getTDouble() , -2, true ); | |
737 def(_areturn , "areturn" , "b" , null , BasicType.getTObject() , -1, true ); | |
738 def(_return , "return" , "b" , null , BasicType.getTVoid() , 0, true ); | |
1602 | 739 def(_getstatic , "getstatic" , "bJJ" , null , BasicType.getTIllegal(), 1, true ); |
740 def(_putstatic , "putstatic" , "bJJ" , null , BasicType.getTIllegal(), -1, true ); | |
741 def(_getfield , "getfield" , "bJJ" , null , BasicType.getTIllegal(), 0, true ); | |
742 def(_putfield , "putfield" , "bJJ" , null , BasicType.getTIllegal(), -2, true ); | |
743 def(_invokevirtual , "invokevirtual" , "bJJ" , null , BasicType.getTIllegal(), -1, true ); | |
744 def(_invokespecial , "invokespecial" , "bJJ" , null , BasicType.getTIllegal(), -1, true ); | |
745 def(_invokestatic , "invokestatic" , "bJJ" , null , BasicType.getTIllegal(), 0, true ); | |
746 def(_invokeinterface , "invokeinterface" , "bJJ__", null , BasicType.getTIllegal(), -1, true ); | |
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747 def(_invokedynamic , "invokedynamic" , "bJJJJ", null , BasicType.getTIllegal(), 0, true ); |
1602 | 748 def(_new , "new" , "bkk" , null , BasicType.getTObject() , 1, true ); |
0 | 749 def(_newarray , "newarray" , "bc" , null , BasicType.getTObject() , 0, true ); |
1602 | 750 def(_anewarray , "anewarray" , "bkk" , null , BasicType.getTObject() , 0, true ); |
0 | 751 def(_arraylength , "arraylength" , "b" , null , BasicType.getTVoid() , 0, true ); |
752 def(_athrow , "athrow" , "b" , null , BasicType.getTVoid() , -1, true ); | |
1602 | 753 def(_checkcast , "checkcast" , "bkk" , null , BasicType.getTObject() , 0, true ); |
754 def(_instanceof , "instanceof" , "bkk" , null , BasicType.getTInt() , 0, true ); | |
0 | 755 def(_monitorenter , "monitorenter" , "b" , null , BasicType.getTVoid() , -1, true ); |
756 def(_monitorexit , "monitorexit" , "b" , null , BasicType.getTVoid() , -1, true ); | |
757 def(_wide , "wide" , "" , null , BasicType.getTVoid() , 0, false); | |
1602 | 758 def(_multianewarray , "multianewarray" , "bkkc" , null , BasicType.getTObject() , 1, true ); |
0 | 759 def(_ifnull , "ifnull" , "boo" , null , BasicType.getTVoid() , -1, false); |
760 def(_ifnonnull , "ifnonnull" , "boo" , null , BasicType.getTVoid() , -1, false); | |
761 def(_goto_w , "goto_w" , "boooo", null , BasicType.getTVoid() , 0, false); | |
762 def(_jsr_w , "jsr_w" , "boooo", null , BasicType.getTInt() , 0, false); | |
763 def(_breakpoint , "breakpoint" , "" , null , BasicType.getTVoid() , 0, true ); | |
764 | |
765 // JVM bytecodes | |
766 // bytecode bytecode name format wide f. result tp stk traps std code | |
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1602 | 768 def(_fast_agetfield , "fast_agetfield" , "bJJ" , null , BasicType.getTObject() , 0, true , _getfield ); |
769 def(_fast_bgetfield , "fast_bgetfield" , "bJJ" , null , BasicType.getTInt() , 0, true , _getfield ); | |
770 def(_fast_cgetfield , "fast_cgetfield" , "bJJ" , null , BasicType.getTChar() , 0, true , _getfield ); | |
771 def(_fast_dgetfield , "fast_dgetfield" , "bJJ" , null , BasicType.getTDouble() , 0, true , _getfield ); | |
772 def(_fast_fgetfield , "fast_fgetfield" , "bJJ" , null , BasicType.getTFloat() , 0, true , _getfield ); | |
773 def(_fast_igetfield , "fast_igetfield" , "bJJ" , null , BasicType.getTInt() , 0, true , _getfield ); | |
774 def(_fast_lgetfield , "fast_lgetfield" , "bJJ" , null , BasicType.getTLong() , 0, true , _getfield ); | |
775 def(_fast_sgetfield , "fast_sgetfield" , "bJJ" , null , BasicType.getTShort() , 0, true , _getfield ); | |
0 | 776 |
1602 | 777 def(_fast_aputfield , "fast_aputfield" , "bJJ" , null , BasicType.getTObject() , 0, true , _putfield ); |
778 def(_fast_bputfield , "fast_bputfield" , "bJJ" , null , BasicType.getTInt() , 0, true , _putfield ); | |
779 def(_fast_cputfield , "fast_cputfield" , "bJJ" , null , BasicType.getTChar() , 0, true , _putfield ); | |
780 def(_fast_dputfield , "fast_dputfield" , "bJJ" , null , BasicType.getTDouble() , 0, true , _putfield ); | |
781 def(_fast_fputfield , "fast_fputfield" , "bJJ" , null , BasicType.getTFloat() , 0, true , _putfield ); | |
782 def(_fast_iputfield , "fast_iputfield" , "bJJ" , null , BasicType.getTInt() , 0, true , _putfield ); | |
783 def(_fast_lputfield , "fast_lputfield" , "bJJ" , null , BasicType.getTLong() , 0, true , _putfield ); | |
784 def(_fast_sputfield , "fast_sputfield" , "bJJ" , null , BasicType.getTShort() , 0, true , _putfield ); | |
0 | 785 |
786 def(_fast_aload_0 , "fast_aload_0" , "b" , null , BasicType.getTObject() , 1, true , _aload_0 ); | |
1602 | 787 def(_fast_iaccess_0 , "fast_iaccess_0" , "b_JJ" , null , BasicType.getTInt() , 1, true , _aload_0 ); |
788 def(_fast_aaccess_0 , "fast_aaccess_0" , "b_JJ" , null , BasicType.getTObject() , 1, true , _aload_0 ); | |
789 def(_fast_faccess_0 , "fast_faccess_0" , "b_JJ" , null , BasicType.getTObject() , 1, true , _aload_0 ); | |
0 | 790 |
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791 def(_fast_iload , "fast_iload" , "bi" , null , BasicType.getTInt() , 1, false, _iload ); |
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792 def(_fast_iload2 , "fast_iload2" , "bi_i" , null , BasicType.getTInt() , 2, false, _iload ); |
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793 def(_fast_icaload , "fast_icaload" , "bi_" , null , BasicType.getTInt() , 0, false, _iload ); |
0 | 794 |
795 // Faster method invocation. | |
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796 def(_fast_invokevfinal , "fast_invokevfinal" , "bJJ" , null , BasicType.getTIllegal(), -1, true, _invokevirtual ); |
0 | 797 |
798 def(_fast_linearswitch , "fast_linearswitch" , "" , null , BasicType.getTVoid() , -1, false, _lookupswitch ); | |
799 def(_fast_binaryswitch , "fast_binaryswitch" , "" , null , BasicType.getTVoid() , -1, false, _lookupswitch ); | |
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800 def(_fast_aldc , "fast_aldc" , "bj" , null , BasicType.getTObject(), 1, true, _ldc ); |
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801 def(_fast_aldc_w , "fast_aldc_w" , "bJJ" , null , BasicType.getTObject(), 1, true, _ldc_w ); |
1602 | 802 |
803 def(_return_register_finalizer, "return_register_finalizer", "b" , null , BasicType.getTVoid() , 0, true, _return ); | |
804 | |
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805 // special handling of signature-polymorphic methods |
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806 def(_invokehandle , "invokehandle" , "bJJ" , null , BasicType.getTIllegal(), -1, true, _invokevirtual ); |
1602 | 807 |
0 | 808 def(_shouldnotreachhere , "_shouldnotreachhere" , "b" , null , BasicType.getTVoid() , 0, false); |
809 | |
810 if (Assert.ASSERTS_ENABLED) { | |
811 // compare can_trap information for each bytecode with the | |
812 // can_trap information for the corresponding base bytecode | |
813 // (if a rewritten bytecode can trap, so must the base bytecode) | |
814 for (int i = 0; i < number_of_codes; i++) { | |
815 if (isDefined(i)) { | |
816 int j = javaCode(i); | |
817 if (canTrap(i) && !canTrap(j)) { | |
818 Assert.that(false, name(i) + " can trap => " + name(j) + " can trap, too"); | |
819 } | |
820 } | |
821 } | |
822 } | |
823 } | |
824 | |
825 private static void def(int code, String name, String format, String wide_format, int result_type, int depth, boolean can_trap) { | |
826 def(code, name, format, wide_format, result_type, depth, can_trap, code); | |
827 } | |
828 | |
829 private static void def(int code, String name, String format, String wide_format, int result_type, int depth, boolean can_trap, int java_code) { | |
830 if (Assert.ASSERTS_ENABLED) { | |
831 Assert.that(wide_format == null || format != null, "short form must exist if there's a wide form"); | |
832 } | |
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833 int len = (format != null ? format.length() : 0); |
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834 int wlen = (wide_format != null ? wide_format.length() : 0); |
0 | 835 _name [code] = name; |
836 _result_type [code] = result_type; | |
837 _depth [code] = (byte) depth; | |
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838 _lengths [code] = (byte)((wlen << 4) | (len & 0xF)); |
0 | 839 _java_code [code] = java_code; |
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840 _format [code] = format; |
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841 _wide_format [code] = wide_format; |
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842 int bc_flags = 0; |
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843 if (can_trap) bc_flags |= _bc_can_trap; |
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844 if (java_code != code) bc_flags |= _bc_can_rewrite; |
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845 _flags[code+0*256] = compute_flags(format, bc_flags); |
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846 _flags[code+1*256] = compute_flags(wide_format, bc_flags); |
0 | 847 } |
848 } |