Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/interpreter/Bytecodes.java @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | 6a991dcb52bb |
| children | c7957b458bf8 |
| rev | line source |
|---|---|
| 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; | |
| 275 public static final int _shouldnotreachhere = 232; // For debugging | |
| 0 | 276 |
| 1602 | 277 public static final int number_of_codes = 233; |
| 0 | 278 |
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279 // Flag bits derived from format strings, can_trap, can_rewrite, etc.: |
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280 // semantic flags: |
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281 static final int _bc_can_trap = 1<<0; // bytecode execution can trap or block |
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282 static final int _bc_can_rewrite = 1<<1; // bytecode execution has an alternate form |
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283 |
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284 // format bits (determined only by the format string): |
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285 static final int _fmt_has_c = 1<<2; // constant, such as sipush "bcc" |
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286 static final int _fmt_has_j = 1<<3; // constant pool cache index, such as getfield "bjj" |
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287 static final int _fmt_has_k = 1<<4; // constant pool index, such as ldc "bk" |
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288 static final int _fmt_has_i = 1<<5; // local index, such as iload |
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289 static final int _fmt_has_o = 1<<6; // offset, such as ifeq |
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290 static final int _fmt_has_nbo = 1<<7; // contains native-order field(s) |
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291 static final int _fmt_has_u2 = 1<<8; // contains double-byte field(s) |
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292 static final int _fmt_has_u4 = 1<<9; // contains quad-byte field |
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293 static final int _fmt_not_variable = 1<<10; // not of variable length (simple or wide) |
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294 static final int _fmt_not_simple = 1<<11; // either wide or variable length |
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295 static final int _all_fmt_bits = (_fmt_not_simple*2 - _fmt_has_c); |
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296 |
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297 // Example derived format syndromes: |
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298 static final int _fmt_b = _fmt_not_variable; |
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299 static final int _fmt_bc = _fmt_b | _fmt_has_c; |
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300 static final int _fmt_bi = _fmt_b | _fmt_has_i; |
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301 static final int _fmt_bkk = _fmt_b | _fmt_has_k | _fmt_has_u2; |
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302 static final int _fmt_bJJ = _fmt_b | _fmt_has_j | _fmt_has_u2 | _fmt_has_nbo; |
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303 static final int _fmt_bo2 = _fmt_b | _fmt_has_o | _fmt_has_u2; |
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304 static final int _fmt_bo4 = _fmt_b | _fmt_has_o | _fmt_has_u4; |
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305 |
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306 |
| 0 | 307 public static int specialLengthAt(Method method, int bci) { |
| 308 int code = codeAt(method, bci); | |
| 309 switch (code) { | |
| 310 case _wide: | |
| 311 return wideLengthFor(method.getBytecodeOrBPAt(bci + 1)); | |
| 312 case _tableswitch: | |
| 313 { | |
| 314 int alignedBCI = Bits.roundTo(bci + 1, jintSize); | |
| 315 int lo = method.getBytecodeIntArg(alignedBCI + 1*jintSize); | |
| 316 int hi = method.getBytecodeIntArg(alignedBCI + 2*jintSize); | |
| 317 return (alignedBCI - bci) + (3 + hi - lo + 1)*jintSize; | |
| 318 } | |
| 319 | |
| 320 case _lookupswitch: // fall through | |
| 321 case _fast_binaryswitch: // fall through | |
| 322 case _fast_linearswitch: | |
| 323 { | |
| 324 int alignedBCI = Bits.roundTo(bci + 1, jintSize); | |
| 325 int npairs = method.getBytecodeIntArg(alignedBCI + jintSize); | |
| 326 return (alignedBCI - bci) + (2 + 2*npairs)*jintSize; | |
| 327 } | |
| 328 | |
| 329 } | |
| 330 throw new RuntimeException("should not reach here"); | |
| 331 } | |
| 332 | |
| 333 // Conversion | |
| 334 public static void check(int code) { | |
| 335 if (Assert.ASSERTS_ENABLED) { | |
| 336 Assert.that(isDefined(code), "illegal code " + code); | |
| 337 } | |
| 338 } | |
| 339 public static void wideCheck(int code) { | |
| 340 if (Assert.ASSERTS_ENABLED) { | |
| 341 Assert.that(wideIsDefined(code), "illegal code " + code); | |
| 342 } | |
| 343 } | |
| 344 | |
| 345 /** Fetches a bytecode, hiding breakpoints as necessary */ | |
| 346 public static int codeAt(Method method, int bci) { | |
| 347 int res = codeOrBPAt(method, bci); | |
| 348 if (res == _breakpoint) { | |
| 349 res = method.getOrigBytecodeAt(bci); | |
| 350 } | |
| 351 return res; | |
| 352 } | |
| 353 | |
| 354 /** Fetches a bytecode or a breakpoint */ | |
| 355 public static int codeOrBPAt(Method method, int bci) { | |
| 356 return method.getBytecodeOrBPAt(bci); | |
| 357 } | |
| 358 | |
| 359 public static boolean isActiveBreakpointAt(Method method, int bci) { | |
| 360 return (codeOrBPAt(method, bci) == _breakpoint); | |
| 361 } | |
| 362 | |
| 363 // find a bytecode, behind a breakpoint if necessary: | |
| 364 // FIXME: not yet implementable | |
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365 // static Code non_breakpoint_code_at(address bcp, Method* method = null); |
| 0 | 366 |
| 367 // Bytecode attributes | |
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368 public static boolean isDefined (int code) { return 0 <= code && code < number_of_codes && flags(code, false) != 0; } |
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369 public static boolean wideIsDefined(int code) { return isDefined(code) && flags(code, true) != 0; } |
| 0 | 370 public static String name (int code) { check(code); return _name [code]; } |
| 371 public static String format (int code) { check(code); return _format [code]; } | |
| 372 public static String wideFormat (int code) { wideCheck(code); return _wide_format [code]; } | |
| 373 public static int resultType (int code) { check(code); return _result_type [code]; } | |
| 374 public static int depth (int code) { check(code); return _depth [code]; } | |
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375 public static int lengthFor (int code) { check(code); return _lengths [code] & 0xF; } |
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376 public static int wideLengthFor(int code) { check(code); return _lengths [code] >> 4; } |
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377 public static boolean canTrap (int code) { check(code); return has_all_flags(code, _bc_can_trap, false); } |
| 0 | 378 public static int javaCode (int code) { check(code); return _java_code [code]; } |
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379 public static boolean canRewrite (int code) { check(code); return has_all_flags(code, _bc_can_rewrite, false); } |
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380 public static boolean native_byte_order(int code) { check(code); return has_all_flags(code, _fmt_has_nbo, false); } |
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381 public static boolean uses_cp_cache (int code) { check(code); return has_all_flags(code, _fmt_has_j, false); } |
| 0 | 382 public static int lengthAt (Method method, int bci) { int l = lengthFor(codeAt(method, bci)); return l > 0 ? l : specialLengthAt(method, bci); } |
| 383 public static int javaLengthAt (Method method, int bci) { int l = lengthFor(javaCode(codeAt(method, bci))); return l > 0 ? l : specialLengthAt(method, bci); } | |
| 384 public static boolean isJavaCode (int code) { return 0 <= code && code < number_of_java_codes; } | |
| 385 public static boolean isFastCode (int code) { return number_of_java_codes <= code && code < number_of_codes; } | |
| 386 | |
| 387 public static boolean isAload (int code) { return (code == _aload || code == _aload_0 || code == _aload_1 | |
| 388 || code == _aload_2 || code == _aload_3); } | |
| 389 public static boolean isAstore (int code) { return (code == _astore || code == _astore_0 || code == _astore_1 | |
| 390 || code == _astore_2 || code == _astore_3); } | |
| 391 | |
| 392 public static boolean isZeroConst (int code) { return (code == _aconst_null || code == _iconst_0 | |
| 393 || code == _fconst_0 || code == _dconst_0); } | |
| 394 | |
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395 static int flags (int code, boolean is_wide) { |
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396 assert code == (code & 0xff) : "must be a byte"; |
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397 return _flags[code + (is_wide ? 256 : 0)]; |
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398 } |
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399 static int format_bits (int code, boolean is_wide) { return flags(code, is_wide) & _all_fmt_bits; } |
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400 static boolean has_all_flags (int code, int test_flags, boolean is_wide) { |
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401 return (flags(code, is_wide) & test_flags) == test_flags; |
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402 } |
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403 |
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404 static char compute_flags(String format) { |
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405 return compute_flags(format, 0); |
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406 } |
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407 static char compute_flags(String format, int more_flags) { |
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408 if (format == null) return 0; // not even more_flags |
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409 int flags = more_flags; |
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410 int fp = 0; |
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411 if (format.length() == 0) { |
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412 flags |= _fmt_not_simple; // but variable |
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413 } else { |
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414 switch (format.charAt(fp)) { |
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415 case 'b': |
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416 flags |= _fmt_not_variable; // but simple |
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417 ++fp; // skip 'b' |
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418 break; |
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419 case 'w': |
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420 flags |= _fmt_not_variable | _fmt_not_simple; |
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421 ++fp; // skip 'w' |
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422 assert(format.charAt(fp) == 'b') : "wide format must start with 'wb'"; |
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423 ++fp; // skip 'b' |
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424 break; |
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425 } |
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426 } |
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427 |
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428 boolean has_nbo = false, has_jbo = false; |
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429 int has_size = 0; |
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430 while (fp < format.length()) { |
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431 int this_flag = 0; |
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432 char fc = format.charAt(fp++); |
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433 switch (fc) { |
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434 case '_': continue; // ignore these |
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435 |
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436 case 'j': this_flag = _fmt_has_j; has_jbo = true; break; |
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437 case 'k': this_flag = _fmt_has_k; has_jbo = true; break; |
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438 case 'i': this_flag = _fmt_has_i; has_jbo = true; break; |
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439 case 'c': this_flag = _fmt_has_c; has_jbo = true; break; |
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440 case 'o': this_flag = _fmt_has_o; has_jbo = true; break; |
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441 |
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442 // uppercase versions mark native byte order (from Rewriter) |
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443 // actually, only the 'J' case happens currently |
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444 case 'J': this_flag = _fmt_has_j; has_nbo = true; break; |
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445 case 'K': this_flag = _fmt_has_k; has_nbo = true; break; |
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446 case 'I': this_flag = _fmt_has_i; has_nbo = true; break; |
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447 case 'C': this_flag = _fmt_has_c; has_nbo = true; break; |
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448 case 'O': this_flag = _fmt_has_o; has_nbo = true; break; |
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449 default: assert false : "bad char in format"; |
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450 } |
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451 |
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452 flags |= this_flag; |
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453 |
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454 assert !(has_jbo && has_nbo) : "mixed byte orders in format"; |
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455 if (has_nbo) |
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456 flags |= _fmt_has_nbo; |
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457 |
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458 int this_size = 1; |
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459 if (fp < format.length() && format.charAt(fp) == fc) { |
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460 // advance beyond run of the same characters |
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461 this_size = 2; |
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462 while (fp + 1 < format.length() && format.charAt(++fp) == fc) this_size++; |
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463 switch (this_size) { |
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464 case 2: flags |= _fmt_has_u2; break; |
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465 case 4: flags |= _fmt_has_u4; break; |
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466 default: assert false : "bad rep count in format"; |
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467 } |
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468 } |
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469 assert has_size == 0 || // no field yet |
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470 this_size == has_size || // same size |
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471 this_size < has_size && fp == format.length() : // last field can be short |
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472 "mixed field sizes in format"; |
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473 has_size = this_size; |
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474 } |
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475 |
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476 assert flags == (char)flags : "change _format_flags"; |
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477 return (char)flags; |
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478 } |
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479 |
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480 |
| 0 | 481 //---------------------------------------------------------------------- |
| 482 // Internals only below this point | |
| 483 // | |
| 484 | |
| 485 private static String[] _name; | |
| 486 private static String[] _format; | |
| 487 private static String[] _wide_format; | |
| 488 private static int[] _result_type; | |
| 489 private static byte[] _depth; | |
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490 private static byte[] _lengths; |
| 0 | 491 private static int[] _java_code; |
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492 private static char[] _flags; |
| 0 | 493 |
| 494 static { | |
| 495 _name = new String [number_of_codes]; | |
| 496 _format = new String [number_of_codes]; | |
| 497 _wide_format = new String [number_of_codes]; | |
| 498 _result_type = new int [number_of_codes]; // See BasicType.java | |
| 499 _depth = new byte [number_of_codes]; | |
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500 _lengths = new byte [number_of_codes]; |
| 0 | 501 _java_code = new int [number_of_codes]; |
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502 _flags = new char[256 * 2]; // all second page for wide formats |
| 0 | 503 |
| 504 // In case we want to fetch this information from the VM in the | |
| 505 // future | |
| 506 VM.registerVMInitializedObserver(new Observer() { | |
| 507 public void update(Observable o, Object data) { | |
| 508 initialize(); | |
| 509 } | |
| 510 }); | |
| 511 } | |
| 512 | |
| 513 private static final int jintSize = 4; | |
| 514 | |
| 515 // private static String[] _name = new String [number_of_codes]; | |
| 516 // private static String[] _format = new String [number_of_codes]; | |
| 517 // private static String[] _wide_format = new String [number_of_codes]; | |
| 518 // private static int[] _result_type = new int [number_of_codes]; // See BasicType.java | |
| 519 // private static byte[] _depth = new byte [number_of_codes]; | |
| 520 // private static byte[] _length = new byte [number_of_codes]; | |
| 521 // private static boolean[] _can_trap = new boolean[number_of_codes]; | |
| 522 // private static int[] _java_code = new int [number_of_codes]; | |
| 523 // private static boolean[] _can_rewrite = new boolean[number_of_codes]; | |
| 524 | |
| 525 // Initialization | |
| 526 private static void initialize() { | |
| 527 if (Assert.ASSERTS_ENABLED) { | |
| 528 Assert.that(number_of_codes <= 256, "too many bytecodes"); | |
| 529 } | |
| 530 | |
| 531 // Format strings interpretation: | |
| 532 // | |
| 533 // b: bytecode | |
| 534 // c: signed constant, Java byte-ordering | |
| 535 // i: unsigned index , Java byte-ordering | |
| 536 // j: unsigned index , native byte-ordering | |
| 537 // o: branch offset , Java byte-ordering | |
| 538 // _: unused/ignored | |
| 539 // w: wide bytecode | |
| 540 // | |
| 541 // Note: Right now the format strings are used for 2 purposes: | |
| 542 // 1. to specify the length of the bytecode | |
| 543 // (= number of characters in format string) | |
| 544 // 2. to specify the bytecode attributes | |
| 545 // | |
| 546 // The bytecode attributes are currently used only for bytecode tracing | |
| 547 // (see BytecodeTracer); thus if more specific format information is | |
| 548 // used, one would also have to adjust the bytecode tracer. | |
| 549 // | |
| 550 // Note: For bytecodes with variable length, the format string is the empty string. | |
| 551 | |
| 552 // Note 1: null for the format string means the bytecode doesn't exist | |
| 553 // in that form. | |
| 554 // | |
| 555 // Note 2: The result type is T_ILLEGAL for bytecodes where the top of stack | |
| 556 // type after execution is not only determined by the bytecode itself. | |
| 557 | |
| 558 // Java bytecodes | |
| 559 // bytecode bytecode name format wide f. result tp stk traps | |
| 560 def(_nop , "nop" , "b" , null , BasicType.getTVoid() , 0, false); | |
| 561 def(_aconst_null , "aconst_null" , "b" , null , BasicType.getTObject() , 1, false); | |
| 562 def(_iconst_m1 , "iconst_m1" , "b" , null , BasicType.getTInt() , 1, false); | |
| 563 def(_iconst_0 , "iconst_0" , "b" , null , BasicType.getTInt() , 1, false); | |
| 564 def(_iconst_1 , "iconst_1" , "b" , null , BasicType.getTInt() , 1, false); | |
| 565 def(_iconst_2 , "iconst_2" , "b" , null , BasicType.getTInt() , 1, false); | |
| 566 def(_iconst_3 , "iconst_3" , "b" , null , BasicType.getTInt() , 1, false); | |
| 567 def(_iconst_4 , "iconst_4" , "b" , null , BasicType.getTInt() , 1, false); | |
| 568 def(_iconst_5 , "iconst_5" , "b" , null , BasicType.getTInt() , 1, false); | |
| 569 def(_lconst_0 , "lconst_0" , "b" , null , BasicType.getTLong() , 2, false); | |
| 570 def(_lconst_1 , "lconst_1" , "b" , null , BasicType.getTLong() , 2, false); | |
| 571 def(_fconst_0 , "fconst_0" , "b" , null , BasicType.getTFloat() , 1, false); | |
| 572 def(_fconst_1 , "fconst_1" , "b" , null , BasicType.getTFloat() , 1, false); | |
| 573 def(_fconst_2 , "fconst_2" , "b" , null , BasicType.getTFloat() , 1, false); | |
| 574 def(_dconst_0 , "dconst_0" , "b" , null , BasicType.getTDouble() , 2, false); | |
| 575 def(_dconst_1 , "dconst_1" , "b" , null , BasicType.getTDouble() , 2, false); | |
| 576 def(_bipush , "bipush" , "bc" , null , BasicType.getTInt() , 1, false); | |
| 577 def(_sipush , "sipush" , "bcc" , null , BasicType.getTInt() , 1, false); | |
| 1602 | 578 def(_ldc , "ldc" , "bk" , null , BasicType.getTIllegal(), 1, true ); |
| 579 def(_ldc_w , "ldc_w" , "bkk" , null , BasicType.getTIllegal(), 1, true ); | |
| 580 def(_ldc2_w , "ldc2_w" , "bkk" , null , BasicType.getTIllegal(), 2, true ); | |
| 0 | 581 def(_iload , "iload" , "bi" , "wbii" , BasicType.getTInt() , 1, false); |
| 582 def(_lload , "lload" , "bi" , "wbii" , BasicType.getTLong() , 2, false); | |
| 583 def(_fload , "fload" , "bi" , "wbii" , BasicType.getTFloat() , 1, false); | |
| 584 def(_dload , "dload" , "bi" , "wbii" , BasicType.getTDouble() , 2, false); | |
| 585 def(_aload , "aload" , "bi" , "wbii" , BasicType.getTObject() , 1, false); | |
| 586 def(_iload_0 , "iload_0" , "b" , null , BasicType.getTInt() , 1, false); | |
| 587 def(_iload_1 , "iload_1" , "b" , null , BasicType.getTInt() , 1, false); | |
| 588 def(_iload_2 , "iload_2" , "b" , null , BasicType.getTInt() , 1, false); | |
| 589 def(_iload_3 , "iload_3" , "b" , null , BasicType.getTInt() , 1, false); | |
| 590 def(_lload_0 , "lload_0" , "b" , null , BasicType.getTLong() , 2, false); | |
| 591 def(_lload_1 , "lload_1" , "b" , null , BasicType.getTLong() , 2, false); | |
| 592 def(_lload_2 , "lload_2" , "b" , null , BasicType.getTLong() , 2, false); | |
| 593 def(_lload_3 , "lload_3" , "b" , null , BasicType.getTLong() , 2, false); | |
| 594 def(_fload_0 , "fload_0" , "b" , null , BasicType.getTFloat() , 1, false); | |
| 595 def(_fload_1 , "fload_1" , "b" , null , BasicType.getTFloat() , 1, false); | |
| 596 def(_fload_2 , "fload_2" , "b" , null , BasicType.getTFloat() , 1, false); | |
| 597 def(_fload_3 , "fload_3" , "b" , null , BasicType.getTFloat() , 1, false); | |
| 598 def(_dload_0 , "dload_0" , "b" , null , BasicType.getTDouble() , 2, false); | |
| 599 def(_dload_1 , "dload_1" , "b" , null , BasicType.getTDouble() , 2, false); | |
| 600 def(_dload_2 , "dload_2" , "b" , null , BasicType.getTDouble() , 2, false); | |
| 601 def(_dload_3 , "dload_3" , "b" , null , BasicType.getTDouble() , 2, false); | |
| 602 def(_aload_0 , "aload_0" , "b" , null , BasicType.getTObject() , 1, true ); // rewriting in interpreter | |
| 603 def(_aload_1 , "aload_1" , "b" , null , BasicType.getTObject() , 1, false); | |
| 604 def(_aload_2 , "aload_2" , "b" , null , BasicType.getTObject() , 1, false); | |
| 605 def(_aload_3 , "aload_3" , "b" , null , BasicType.getTObject() , 1, false); | |
| 606 def(_iaload , "iaload" , "b" , null , BasicType.getTInt() , -1, true ); | |
| 607 def(_laload , "laload" , "b" , null , BasicType.getTLong() , 0, true ); | |
| 608 def(_faload , "faload" , "b" , null , BasicType.getTFloat() , -1, true ); | |
| 609 def(_daload , "daload" , "b" , null , BasicType.getTDouble() , 0, true ); | |
| 610 def(_aaload , "aaload" , "b" , null , BasicType.getTObject() , -1, true ); | |
| 611 def(_baload , "baload" , "b" , null , BasicType.getTInt() , -1, true ); | |
| 612 def(_caload , "caload" , "b" , null , BasicType.getTInt() , -1, true ); | |
| 613 def(_saload , "saload" , "b" , null , BasicType.getTInt() , -1, true ); | |
| 614 def(_istore , "istore" , "bi" , "wbii" , BasicType.getTVoid() , -1, false); | |
| 615 def(_lstore , "lstore" , "bi" , "wbii" , BasicType.getTVoid() , -2, false); | |
| 616 def(_fstore , "fstore" , "bi" , "wbii" , BasicType.getTVoid() , -1, false); | |
| 617 def(_dstore , "dstore" , "bi" , "wbii" , BasicType.getTVoid() , -2, false); | |
| 618 def(_astore , "astore" , "bi" , "wbii" , BasicType.getTVoid() , -1, false); | |
| 619 def(_istore_0 , "istore_0" , "b" , null , BasicType.getTVoid() , -1, false); | |
| 620 def(_istore_1 , "istore_1" , "b" , null , BasicType.getTVoid() , -1, false); | |
| 621 def(_istore_2 , "istore_2" , "b" , null , BasicType.getTVoid() , -1, false); | |
| 622 def(_istore_3 , "istore_3" , "b" , null , BasicType.getTVoid() , -1, false); | |
| 623 def(_lstore_0 , "lstore_0" , "b" , null , BasicType.getTVoid() , -2, false); | |
| 624 def(_lstore_1 , "lstore_1" , "b" , null , BasicType.getTVoid() , -2, false); | |
| 625 def(_lstore_2 , "lstore_2" , "b" , null , BasicType.getTVoid() , -2, false); | |
| 626 def(_lstore_3 , "lstore_3" , "b" , null , BasicType.getTVoid() , -2, false); | |
| 627 def(_fstore_0 , "fstore_0" , "b" , null , BasicType.getTVoid() , -1, false); | |
| 628 def(_fstore_1 , "fstore_1" , "b" , null , BasicType.getTVoid() , -1, false); | |
| 629 def(_fstore_2 , "fstore_2" , "b" , null , BasicType.getTVoid() , -1, false); | |
| 630 def(_fstore_3 , "fstore_3" , "b" , null , BasicType.getTVoid() , -1, false); | |
| 631 def(_dstore_0 , "dstore_0" , "b" , null , BasicType.getTVoid() , -2, false); | |
| 632 def(_dstore_1 , "dstore_1" , "b" , null , BasicType.getTVoid() , -2, false); | |
| 633 def(_dstore_2 , "dstore_2" , "b" , null , BasicType.getTVoid() , -2, false); | |
| 634 def(_dstore_3 , "dstore_3" , "b" , null , BasicType.getTVoid() , -2, false); | |
| 635 def(_astore_0 , "astore_0" , "b" , null , BasicType.getTVoid() , -1, false); | |
| 636 def(_astore_1 , "astore_1" , "b" , null , BasicType.getTVoid() , -1, false); | |
| 637 def(_astore_2 , "astore_2" , "b" , null , BasicType.getTVoid() , -1, false); | |
| 638 def(_astore_3 , "astore_3" , "b" , null , BasicType.getTVoid() , -1, false); | |
| 639 def(_iastore , "iastore" , "b" , null , BasicType.getTVoid() , -3, true ); | |
| 640 def(_lastore , "lastore" , "b" , null , BasicType.getTVoid() , -4, true ); | |
| 641 def(_fastore , "fastore" , "b" , null , BasicType.getTVoid() , -3, true ); | |
| 642 def(_dastore , "dastore" , "b" , null , BasicType.getTVoid() , -4, true ); | |
| 643 def(_aastore , "aastore" , "b" , null , BasicType.getTVoid() , -3, true ); | |
| 644 def(_bastore , "bastore" , "b" , null , BasicType.getTVoid() , -3, true ); | |
| 645 def(_castore , "castore" , "b" , null , BasicType.getTVoid() , -3, true ); | |
| 646 def(_sastore , "sastore" , "b" , null , BasicType.getTVoid() , -3, true ); | |
| 647 def(_pop , "pop" , "b" , null , BasicType.getTVoid() , -1, false); | |
| 648 def(_pop2 , "pop2" , "b" , null , BasicType.getTVoid() , -2, false); | |
| 649 def(_dup , "dup" , "b" , null , BasicType.getTVoid() , 1, false); | |
| 650 def(_dup_x1 , "dup_x1" , "b" , null , BasicType.getTVoid() , 1, false); | |
| 651 def(_dup_x2 , "dup_x2" , "b" , null , BasicType.getTVoid() , 1, false); | |
| 652 def(_dup2 , "dup2" , "b" , null , BasicType.getTVoid() , 2, false); | |
| 653 def(_dup2_x1 , "dup2_x1" , "b" , null , BasicType.getTVoid() , 2, false); | |
| 654 def(_dup2_x2 , "dup2_x2" , "b" , null , BasicType.getTVoid() , 2, false); | |
| 655 def(_swap , "swap" , "b" , null , BasicType.getTVoid() , 0, false); | |
| 656 def(_iadd , "iadd" , "b" , null , BasicType.getTInt() , -1, false); | |
| 657 def(_ladd , "ladd" , "b" , null , BasicType.getTLong() , -2, false); | |
| 658 def(_fadd , "fadd" , "b" , null , BasicType.getTFloat() , -1, false); | |
| 659 def(_dadd , "dadd" , "b" , null , BasicType.getTDouble() , -2, false); | |
| 660 def(_isub , "isub" , "b" , null , BasicType.getTInt() , -1, false); | |
| 661 def(_lsub , "lsub" , "b" , null , BasicType.getTLong() , -2, false); | |
| 662 def(_fsub , "fsub" , "b" , null , BasicType.getTFloat() , -1, false); | |
| 663 def(_dsub , "dsub" , "b" , null , BasicType.getTDouble() , -2, false); | |
| 664 def(_imul , "imul" , "b" , null , BasicType.getTInt() , -1, false); | |
| 665 def(_lmul , "lmul" , "b" , null , BasicType.getTLong() , -2, false); | |
| 666 def(_fmul , "fmul" , "b" , null , BasicType.getTFloat() , -1, false); | |
| 667 def(_dmul , "dmul" , "b" , null , BasicType.getTDouble() , -2, false); | |
| 668 def(_idiv , "idiv" , "b" , null , BasicType.getTInt() , -1, true ); | |
| 669 def(_ldiv , "ldiv" , "b" , null , BasicType.getTLong() , -2, true ); | |
| 670 def(_fdiv , "fdiv" , "b" , null , BasicType.getTFloat() , -1, false); | |
| 671 def(_ddiv , "ddiv" , "b" , null , BasicType.getTDouble() , -2, false); | |
| 672 def(_irem , "irem" , "b" , null , BasicType.getTInt() , -1, true ); | |
| 673 def(_lrem , "lrem" , "b" , null , BasicType.getTLong() , -2, true ); | |
| 674 def(_frem , "frem" , "b" , null , BasicType.getTFloat() , -1, false); | |
| 675 def(_drem , "drem" , "b" , null , BasicType.getTDouble() , -2, false); | |
| 676 def(_ineg , "ineg" , "b" , null , BasicType.getTInt() , 0, false); | |
| 677 def(_lneg , "lneg" , "b" , null , BasicType.getTLong() , 0, false); | |
| 678 def(_fneg , "fneg" , "b" , null , BasicType.getTFloat() , 0, false); | |
| 679 def(_dneg , "dneg" , "b" , null , BasicType.getTDouble() , 0, false); | |
| 680 def(_ishl , "ishl" , "b" , null , BasicType.getTInt() , -1, false); | |
| 681 def(_lshl , "lshl" , "b" , null , BasicType.getTLong() , -1, false); | |
| 682 def(_ishr , "ishr" , "b" , null , BasicType.getTInt() , -1, false); | |
| 683 def(_lshr , "lshr" , "b" , null , BasicType.getTLong() , -1, false); | |
| 684 def(_iushr , "iushr" , "b" , null , BasicType.getTInt() , -1, false); | |
| 685 def(_lushr , "lushr" , "b" , null , BasicType.getTLong() , -1, false); | |
| 686 def(_iand , "iand" , "b" , null , BasicType.getTInt() , -1, false); | |
| 687 def(_land , "land" , "b" , null , BasicType.getTLong() , -2, false); | |
| 688 def(_ior , "ior" , "b" , null , BasicType.getTInt() , -1, false); | |
| 689 def(_lor , "lor" , "b" , null , BasicType.getTLong() , -2, false); | |
| 690 def(_ixor , "ixor" , "b" , null , BasicType.getTInt() , -1, false); | |
| 691 def(_lxor , "lxor" , "b" , null , BasicType.getTLong() , -2, false); | |
| 692 def(_iinc , "iinc" , "bic" , "wbiicc", BasicType.getTVoid() , 0, false); | |
| 693 def(_i2l , "i2l" , "b" , null , BasicType.getTLong() , 1, false); | |
| 694 def(_i2f , "i2f" , "b" , null , BasicType.getTFloat() , 0, false); | |
| 695 def(_i2d , "i2d" , "b" , null , BasicType.getTDouble() , 1, false); | |
| 696 def(_l2i , "l2i" , "b" , null , BasicType.getTInt() , -1, false); | |
| 697 def(_l2f , "l2f" , "b" , null , BasicType.getTFloat() , -1, false); | |
| 698 def(_l2d , "l2d" , "b" , null , BasicType.getTDouble() , 0, false); | |
| 699 def(_f2i , "f2i" , "b" , null , BasicType.getTInt() , 0, false); | |
| 700 def(_f2l , "f2l" , "b" , null , BasicType.getTLong() , 1, false); | |
| 701 def(_f2d , "f2d" , "b" , null , BasicType.getTDouble() , 1, false); | |
| 702 def(_d2i , "d2i" , "b" , null , BasicType.getTInt() , -1, false); | |
| 703 def(_d2l , "d2l" , "b" , null , BasicType.getTLong() , 0, false); | |
| 704 def(_d2f , "d2f" , "b" , null , BasicType.getTFloat() , -1, false); | |
| 705 def(_i2b , "i2b" , "b" , null , BasicType.getTByte() , 0, false); | |
| 706 def(_i2c , "i2c" , "b" , null , BasicType.getTChar() , 0, false); | |
| 707 def(_i2s , "i2s" , "b" , null , BasicType.getTShort() , 0, false); | |
| 708 def(_lcmp , "lcmp" , "b" , null , BasicType.getTVoid() , -3, false); | |
| 709 def(_fcmpl , "fcmpl" , "b" , null , BasicType.getTVoid() , -1, false); | |
| 710 def(_fcmpg , "fcmpg" , "b" , null , BasicType.getTVoid() , -1, false); | |
| 711 def(_dcmpl , "dcmpl" , "b" , null , BasicType.getTVoid() , -3, false); | |
| 712 def(_dcmpg , "dcmpg" , "b" , null , BasicType.getTVoid() , -3, false); | |
| 713 def(_ifeq , "ifeq" , "boo" , null , BasicType.getTVoid() , -1, false); | |
| 714 def(_ifne , "ifne" , "boo" , null , BasicType.getTVoid() , -1, false); | |
| 715 def(_iflt , "iflt" , "boo" , null , BasicType.getTVoid() , -1, false); | |
| 716 def(_ifge , "ifge" , "boo" , null , BasicType.getTVoid() , -1, false); | |
| 717 def(_ifgt , "ifgt" , "boo" , null , BasicType.getTVoid() , -1, false); | |
| 718 def(_ifle , "ifle" , "boo" , null , BasicType.getTVoid() , -1, false); | |
| 719 def(_if_icmpeq , "if_icmpeq" , "boo" , null , BasicType.getTVoid() , -2, false); | |
| 720 def(_if_icmpne , "if_icmpne" , "boo" , null , BasicType.getTVoid() , -2, false); | |
| 721 def(_if_icmplt , "if_icmplt" , "boo" , null , BasicType.getTVoid() , -2, false); | |
| 722 def(_if_icmpge , "if_icmpge" , "boo" , null , BasicType.getTVoid() , -2, false); | |
| 723 def(_if_icmpgt , "if_icmpgt" , "boo" , null , BasicType.getTVoid() , -2, false); | |
| 724 def(_if_icmple , "if_icmple" , "boo" , null , BasicType.getTVoid() , -2, false); | |
| 725 def(_if_acmpeq , "if_acmpeq" , "boo" , null , BasicType.getTVoid() , -2, false); | |
| 726 def(_if_acmpne , "if_acmpne" , "boo" , null , BasicType.getTVoid() , -2, false); | |
| 727 def(_goto , "goto" , "boo" , null , BasicType.getTVoid() , 0, false); | |
| 728 def(_jsr , "jsr" , "boo" , null , BasicType.getTInt() , 0, false); | |
| 729 def(_ret , "ret" , "bi" , "wbii" , BasicType.getTVoid() , 0, false); | |
| 730 def(_tableswitch , "tableswitch" , "" , null , BasicType.getTVoid() , -1, false); // may have backward branches | |
| 731 def(_lookupswitch , "lookupswitch" , "" , null , BasicType.getTVoid() , -1, false); // rewriting in interpreter | |
| 732 def(_ireturn , "ireturn" , "b" , null , BasicType.getTInt() , -1, true ); | |
| 733 def(_lreturn , "lreturn" , "b" , null , BasicType.getTLong() , -2, true ); | |
| 734 def(_freturn , "freturn" , "b" , null , BasicType.getTFloat() , -1, true ); | |
| 735 def(_dreturn , "dreturn" , "b" , null , BasicType.getTDouble() , -2, true ); | |
| 736 def(_areturn , "areturn" , "b" , null , BasicType.getTObject() , -1, true ); | |
| 737 def(_return , "return" , "b" , null , BasicType.getTVoid() , 0, true ); | |
| 1602 | 738 def(_getstatic , "getstatic" , "bJJ" , null , BasicType.getTIllegal(), 1, true ); |
| 739 def(_putstatic , "putstatic" , "bJJ" , null , BasicType.getTIllegal(), -1, true ); | |
| 740 def(_getfield , "getfield" , "bJJ" , null , BasicType.getTIllegal(), 0, true ); | |
| 741 def(_putfield , "putfield" , "bJJ" , null , BasicType.getTIllegal(), -2, true ); | |
| 742 def(_invokevirtual , "invokevirtual" , "bJJ" , null , BasicType.getTIllegal(), -1, true ); | |
| 743 def(_invokespecial , "invokespecial" , "bJJ" , null , BasicType.getTIllegal(), -1, true ); | |
| 744 def(_invokestatic , "invokestatic" , "bJJ" , null , BasicType.getTIllegal(), 0, true ); | |
| 745 def(_invokeinterface , "invokeinterface" , "bJJ__", null , BasicType.getTIllegal(), -1, true ); | |
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746 def(_invokedynamic , "invokedynamic" , "bJJJJ", null , BasicType.getTIllegal(), 0, true ); |
| 1602 | 747 def(_new , "new" , "bkk" , null , BasicType.getTObject() , 1, true ); |
| 0 | 748 def(_newarray , "newarray" , "bc" , null , BasicType.getTObject() , 0, true ); |
| 1602 | 749 def(_anewarray , "anewarray" , "bkk" , null , BasicType.getTObject() , 0, true ); |
| 0 | 750 def(_arraylength , "arraylength" , "b" , null , BasicType.getTVoid() , 0, true ); |
| 751 def(_athrow , "athrow" , "b" , null , BasicType.getTVoid() , -1, true ); | |
| 1602 | 752 def(_checkcast , "checkcast" , "bkk" , null , BasicType.getTObject() , 0, true ); |
| 753 def(_instanceof , "instanceof" , "bkk" , null , BasicType.getTInt() , 0, true ); | |
| 0 | 754 def(_monitorenter , "monitorenter" , "b" , null , BasicType.getTVoid() , -1, true ); |
| 755 def(_monitorexit , "monitorexit" , "b" , null , BasicType.getTVoid() , -1, true ); | |
| 756 def(_wide , "wide" , "" , null , BasicType.getTVoid() , 0, false); | |
| 1602 | 757 def(_multianewarray , "multianewarray" , "bkkc" , null , BasicType.getTObject() , 1, true ); |
| 0 | 758 def(_ifnull , "ifnull" , "boo" , null , BasicType.getTVoid() , -1, false); |
| 759 def(_ifnonnull , "ifnonnull" , "boo" , null , BasicType.getTVoid() , -1, false); | |
| 760 def(_goto_w , "goto_w" , "boooo", null , BasicType.getTVoid() , 0, false); | |
| 761 def(_jsr_w , "jsr_w" , "boooo", null , BasicType.getTInt() , 0, false); | |
| 762 def(_breakpoint , "breakpoint" , "" , null , BasicType.getTVoid() , 0, true ); | |
| 763 | |
| 764 // JVM bytecodes | |
| 765 // bytecode bytecode name format wide f. result tp stk traps std code | |
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766 |
| 1602 | 767 def(_fast_agetfield , "fast_agetfield" , "bJJ" , null , BasicType.getTObject() , 0, true , _getfield ); |
| 768 def(_fast_bgetfield , "fast_bgetfield" , "bJJ" , null , BasicType.getTInt() , 0, true , _getfield ); | |
| 769 def(_fast_cgetfield , "fast_cgetfield" , "bJJ" , null , BasicType.getTChar() , 0, true , _getfield ); | |
| 770 def(_fast_dgetfield , "fast_dgetfield" , "bJJ" , null , BasicType.getTDouble() , 0, true , _getfield ); | |
| 771 def(_fast_fgetfield , "fast_fgetfield" , "bJJ" , null , BasicType.getTFloat() , 0, true , _getfield ); | |
| 772 def(_fast_igetfield , "fast_igetfield" , "bJJ" , null , BasicType.getTInt() , 0, true , _getfield ); | |
| 773 def(_fast_lgetfield , "fast_lgetfield" , "bJJ" , null , BasicType.getTLong() , 0, true , _getfield ); | |
| 774 def(_fast_sgetfield , "fast_sgetfield" , "bJJ" , null , BasicType.getTShort() , 0, true , _getfield ); | |
| 0 | 775 |
| 1602 | 776 def(_fast_aputfield , "fast_aputfield" , "bJJ" , null , BasicType.getTObject() , 0, true , _putfield ); |
| 777 def(_fast_bputfield , "fast_bputfield" , "bJJ" , null , BasicType.getTInt() , 0, true , _putfield ); | |
| 778 def(_fast_cputfield , "fast_cputfield" , "bJJ" , null , BasicType.getTChar() , 0, true , _putfield ); | |
| 779 def(_fast_dputfield , "fast_dputfield" , "bJJ" , null , BasicType.getTDouble() , 0, true , _putfield ); | |
| 780 def(_fast_fputfield , "fast_fputfield" , "bJJ" , null , BasicType.getTFloat() , 0, true , _putfield ); | |
| 781 def(_fast_iputfield , "fast_iputfield" , "bJJ" , null , BasicType.getTInt() , 0, true , _putfield ); | |
| 782 def(_fast_lputfield , "fast_lputfield" , "bJJ" , null , BasicType.getTLong() , 0, true , _putfield ); | |
| 783 def(_fast_sputfield , "fast_sputfield" , "bJJ" , null , BasicType.getTShort() , 0, true , _putfield ); | |
| 0 | 784 |
| 785 def(_fast_aload_0 , "fast_aload_0" , "b" , null , BasicType.getTObject() , 1, true , _aload_0 ); | |
| 1602 | 786 def(_fast_iaccess_0 , "fast_iaccess_0" , "b_JJ" , null , BasicType.getTInt() , 1, true , _aload_0 ); |
| 787 def(_fast_aaccess_0 , "fast_aaccess_0" , "b_JJ" , null , BasicType.getTObject() , 1, true , _aload_0 ); | |
| 788 def(_fast_faccess_0 , "fast_faccess_0" , "b_JJ" , null , BasicType.getTObject() , 1, true , _aload_0 ); | |
| 0 | 789 |
| 790 def(_fast_iload , "fast_iload" , "bi" , null , BasicType.getTInt() , 1, false, _iload); | |
| 791 def(_fast_iload2 , "fast_iload2" , "bi_i" , null , BasicType.getTInt() , 2, false, _iload); | |
| 792 def(_fast_icaload , "fast_icaload" , "bi_" , null , BasicType.getTInt() , 0, false, _iload); | |
| 793 | |
| 794 // Faster method invocation. | |
| 1602 | 795 def(_fast_invokevfinal , "fast_invokevfinal" , "bJJ" , null , BasicType.getTIllegal(), -1, true, _invokevirtual); |
| 0 | 796 |
| 797 def(_fast_linearswitch , "fast_linearswitch" , "" , null , BasicType.getTVoid() , -1, false, _lookupswitch ); | |
| 798 def(_fast_binaryswitch , "fast_binaryswitch" , "" , null , BasicType.getTVoid() , -1, false, _lookupswitch ); | |
| 1602 | 799 |
| 800 def(_return_register_finalizer, "return_register_finalizer", "b" , null , BasicType.getTVoid() , 0, true, _return ); | |
| 801 | |
| 802 def(_fast_aldc , "fast_aldc" , "bj" , null , BasicType.getTObject(), 1, true, _ldc ); | |
| 803 def(_fast_aldc_w , "fast_aldc_w" , "bJJ" , null , BasicType.getTObject(), 1, true, _ldc_w ); | |
| 804 | |
| 0 | 805 def(_shouldnotreachhere , "_shouldnotreachhere" , "b" , null , BasicType.getTVoid() , 0, false); |
| 806 | |
| 807 if (Assert.ASSERTS_ENABLED) { | |
| 808 // compare can_trap information for each bytecode with the | |
| 809 // can_trap information for the corresponding base bytecode | |
| 810 // (if a rewritten bytecode can trap, so must the base bytecode) | |
| 811 for (int i = 0; i < number_of_codes; i++) { | |
| 812 if (isDefined(i)) { | |
| 813 int j = javaCode(i); | |
| 814 if (canTrap(i) && !canTrap(j)) { | |
| 815 Assert.that(false, name(i) + " can trap => " + name(j) + " can trap, too"); | |
| 816 } | |
| 817 } | |
| 818 } | |
| 819 } | |
| 820 } | |
| 821 | |
| 822 private static void def(int code, String name, String format, String wide_format, int result_type, int depth, boolean can_trap) { | |
| 823 def(code, name, format, wide_format, result_type, depth, can_trap, code); | |
| 824 } | |
| 825 | |
| 826 private static void def(int code, String name, String format, String wide_format, int result_type, int depth, boolean can_trap, int java_code) { | |
| 827 if (Assert.ASSERTS_ENABLED) { | |
| 828 Assert.that(wide_format == null || format != null, "short form must exist if there's a wide form"); | |
| 829 } | |
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830 int len = (format != null ? format.length() : 0); |
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831 int wlen = (wide_format != null ? wide_format.length() : 0); |
| 0 | 832 _name [code] = name; |
| 833 _result_type [code] = result_type; | |
| 834 _depth [code] = (byte) depth; | |
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835 _lengths [code] = (byte)((wlen << 4) | (len & 0xF)); |
| 0 | 836 _java_code [code] = java_code; |
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837 _format [code] = format; |
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838 _wide_format [code] = wide_format; |
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839 int bc_flags = 0; |
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840 if (can_trap) bc_flags |= _bc_can_trap; |
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841 if (java_code != code) bc_flags |= _bc_can_rewrite; |
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842 _flags[code+0*256] = compute_flags(format, bc_flags); |
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843 _flags[code+1*256] = compute_flags(wide_format, bc_flags); |
| 0 | 844 } |
| 845 } |