| /* |
| * Copyright (c) 2001, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| package sun.jvm.hotspot.interpreter; |
| |
| import java.util.*; |
| import sun.jvm.hotspot.oops.*; |
| import sun.jvm.hotspot.runtime.*; |
| import sun.jvm.hotspot.utilities.*; |
| |
| // Bytecodes specifies all bytecodes used in the VM and |
| // provides utility functions to get bytecode attributes. |
| |
| public class Bytecodes { |
| public static final int _illegal = -1; |
| |
| // Java bytecodes |
| public static final int _nop = 0; // 0x00 |
| public static final int _aconst_null = 1; // 0x01 |
| public static final int _iconst_m1 = 2; // 0x02 |
| public static final int _iconst_0 = 3; // 0x03 |
| public static final int _iconst_1 = 4; // 0x04 |
| public static final int _iconst_2 = 5; // 0x05 |
| public static final int _iconst_3 = 6; // 0x06 |
| public static final int _iconst_4 = 7; // 0x07 |
| public static final int _iconst_5 = 8; // 0x08 |
| public static final int _lconst_0 = 9; // 0x09 |
| public static final int _lconst_1 = 10; // 0x0a |
| public static final int _fconst_0 = 11; // 0x0b |
| public static final int _fconst_1 = 12; // 0x0c |
| public static final int _fconst_2 = 13; // 0x0d |
| public static final int _dconst_0 = 14; // 0x0e |
| public static final int _dconst_1 = 15; // 0x0f |
| public static final int _bipush = 16; // 0x10 |
| public static final int _sipush = 17; // 0x11 |
| public static final int _ldc = 18; // 0x12 |
| public static final int _ldc_w = 19; // 0x13 |
| public static final int _ldc2_w = 20; // 0x14 |
| public static final int _iload = 21; // 0x15 |
| public static final int _lload = 22; // 0x16 |
| public static final int _fload = 23; // 0x17 |
| public static final int _dload = 24; // 0x18 |
| public static final int _aload = 25; // 0x19 |
| public static final int _iload_0 = 26; // 0x1a |
| public static final int _iload_1 = 27; // 0x1b |
| public static final int _iload_2 = 28; // 0x1c |
| public static final int _iload_3 = 29; // 0x1d |
| public static final int _lload_0 = 30; // 0x1e |
| public static final int _lload_1 = 31; // 0x1f |
| public static final int _lload_2 = 32; // 0x20 |
| public static final int _lload_3 = 33; // 0x21 |
| public static final int _fload_0 = 34; // 0x22 |
| public static final int _fload_1 = 35; // 0x23 |
| public static final int _fload_2 = 36; // 0x24 |
| public static final int _fload_3 = 37; // 0x25 |
| public static final int _dload_0 = 38; // 0x26 |
| public static final int _dload_1 = 39; // 0x27 |
| public static final int _dload_2 = 40; // 0x28 |
| public static final int _dload_3 = 41; // 0x29 |
| public static final int _aload_0 = 42; // 0x2a |
| public static final int _aload_1 = 43; // 0x2b |
| public static final int _aload_2 = 44; // 0x2c |
| public static final int _aload_3 = 45; // 0x2d |
| public static final int _iaload = 46; // 0x2e |
| public static final int _laload = 47; // 0x2f |
| public static final int _faload = 48; // 0x30 |
| public static final int _daload = 49; // 0x31 |
| public static final int _aaload = 50; // 0x32 |
| public static final int _baload = 51; // 0x33 |
| public static final int _caload = 52; // 0x34 |
| public static final int _saload = 53; // 0x35 |
| public static final int _istore = 54; // 0x36 |
| public static final int _lstore = 55; // 0x37 |
| public static final int _fstore = 56; // 0x38 |
| public static final int _dstore = 57; // 0x39 |
| public static final int _astore = 58; // 0x3a |
| public static final int _istore_0 = 59; // 0x3b |
| public static final int _istore_1 = 60; // 0x3c |
| public static final int _istore_2 = 61; // 0x3d |
| public static final int _istore_3 = 62; // 0x3e |
| public static final int _lstore_0 = 63; // 0x3f |
| public static final int _lstore_1 = 64; // 0x40 |
| public static final int _lstore_2 = 65; // 0x41 |
| public static final int _lstore_3 = 66; // 0x42 |
| public static final int _fstore_0 = 67; // 0x43 |
| public static final int _fstore_1 = 68; // 0x44 |
| public static final int _fstore_2 = 69; // 0x45 |
| public static final int _fstore_3 = 70; // 0x46 |
| public static final int _dstore_0 = 71; // 0x47 |
| public static final int _dstore_1 = 72; // 0x48 |
| public static final int _dstore_2 = 73; // 0x49 |
| public static final int _dstore_3 = 74; // 0x4a |
| public static final int _astore_0 = 75; // 0x4b |
| public static final int _astore_1 = 76; // 0x4c |
| public static final int _astore_2 = 77; // 0x4d |
| public static final int _astore_3 = 78; // 0x4e |
| public static final int _iastore = 79; // 0x4f |
| public static final int _lastore = 80; // 0x50 |
| public static final int _fastore = 81; // 0x51 |
| public static final int _dastore = 82; // 0x52 |
| public static final int _aastore = 83; // 0x53 |
| public static final int _bastore = 84; // 0x54 |
| public static final int _castore = 85; // 0x55 |
| public static final int _sastore = 86; // 0x56 |
| public static final int _pop = 87; // 0x57 |
| public static final int _pop2 = 88; // 0x58 |
| public static final int _dup = 89; // 0x59 |
| public static final int _dup_x1 = 90; // 0x5a |
| public static final int _dup_x2 = 91; // 0x5b |
| public static final int _dup2 = 92; // 0x5c |
| public static final int _dup2_x1 = 93; // 0x5d |
| public static final int _dup2_x2 = 94; // 0x5e |
| public static final int _swap = 95; // 0x5f |
| public static final int _iadd = 96; // 0x60 |
| public static final int _ladd = 97; // 0x61 |
| public static final int _fadd = 98; // 0x62 |
| public static final int _dadd = 99; // 0x63 |
| public static final int _isub = 100; // 0x64 |
| public static final int _lsub = 101; // 0x65 |
| public static final int _fsub = 102; // 0x66 |
| public static final int _dsub = 103; // 0x67 |
| public static final int _imul = 104; // 0x68 |
| public static final int _lmul = 105; // 0x69 |
| public static final int _fmul = 106; // 0x6a |
| public static final int _dmul = 107; // 0x6b |
| public static final int _idiv = 108; // 0x6c |
| public static final int _ldiv = 109; // 0x6d |
| public static final int _fdiv = 110; // 0x6e |
| public static final int _ddiv = 111; // 0x6f |
| public static final int _irem = 112; // 0x70 |
| public static final int _lrem = 113; // 0x71 |
| public static final int _frem = 114; // 0x72 |
| public static final int _drem = 115; // 0x73 |
| public static final int _ineg = 116; // 0x74 |
| public static final int _lneg = 117; // 0x75 |
| public static final int _fneg = 118; // 0x76 |
| public static final int _dneg = 119; // 0x77 |
| public static final int _ishl = 120; // 0x78 |
| public static final int _lshl = 121; // 0x79 |
| public static final int _ishr = 122; // 0x7a |
| public static final int _lshr = 123; // 0x7b |
| public static final int _iushr = 124; // 0x7c |
| public static final int _lushr = 125; // 0x7d |
| public static final int _iand = 126; // 0x7e |
| public static final int _land = 127; // 0x7f |
| public static final int _ior = 128; // 0x80 |
| public static final int _lor = 129; // 0x81 |
| public static final int _ixor = 130; // 0x82 |
| public static final int _lxor = 131; // 0x83 |
| public static final int _iinc = 132; // 0x84 |
| public static final int _i2l = 133; // 0x85 |
| public static final int _i2f = 134; // 0x86 |
| public static final int _i2d = 135; // 0x87 |
| public static final int _l2i = 136; // 0x88 |
| public static final int _l2f = 137; // 0x89 |
| public static final int _l2d = 138; // 0x8a |
| public static final int _f2i = 139; // 0x8b |
| public static final int _f2l = 140; // 0x8c |
| public static final int _f2d = 141; // 0x8d |
| public static final int _d2i = 142; // 0x8e |
| public static final int _d2l = 143; // 0x8f |
| public static final int _d2f = 144; // 0x90 |
| public static final int _i2b = 145; // 0x91 |
| public static final int _i2c = 146; // 0x92 |
| public static final int _i2s = 147; // 0x93 |
| public static final int _lcmp = 148; // 0x94 |
| public static final int _fcmpl = 149; // 0x95 |
| public static final int _fcmpg = 150; // 0x96 |
| public static final int _dcmpl = 151; // 0x97 |
| public static final int _dcmpg = 152; // 0x98 |
| public static final int _ifeq = 153; // 0x99 |
| public static final int _ifne = 154; // 0x9a |
| public static final int _iflt = 155; // 0x9b |
| public static final int _ifge = 156; // 0x9c |
| public static final int _ifgt = 157; // 0x9d |
| public static final int _ifle = 158; // 0x9e |
| public static final int _if_icmpeq = 159; // 0x9f |
| public static final int _if_icmpne = 160; // 0xa0 |
| public static final int _if_icmplt = 161; // 0xa1 |
| public static final int _if_icmpge = 162; // 0xa2 |
| public static final int _if_icmpgt = 163; // 0xa3 |
| public static final int _if_icmple = 164; // 0xa4 |
| public static final int _if_acmpeq = 165; // 0xa5 |
| public static final int _if_acmpne = 166; // 0xa6 |
| public static final int _goto = 167; // 0xa7 |
| public static final int _jsr = 168; // 0xa8 |
| public static final int _ret = 169; // 0xa9 |
| public static final int _tableswitch = 170; // 0xaa |
| public static final int _lookupswitch = 171; // 0xab |
| public static final int _ireturn = 172; // 0xac |
| public static final int _lreturn = 173; // 0xad |
| public static final int _freturn = 174; // 0xae |
| public static final int _dreturn = 175; // 0xaf |
| public static final int _areturn = 176; // 0xb0 |
| public static final int _return = 177; // 0xb1 |
| public static final int _getstatic = 178; // 0xb2 |
| public static final int _putstatic = 179; // 0xb3 |
| public static final int _getfield = 180; // 0xb4 |
| public static final int _putfield = 181; // 0xb5 |
| public static final int _invokevirtual = 182; // 0xb6 |
| public static final int _invokespecial = 183; // 0xb7 |
| public static final int _invokestatic = 184; // 0xb8 |
| public static final int _invokeinterface = 185; // 0xb9 |
| public static final int _invokedynamic = 186; // 0xba |
| public static final int _new = 187; // 0xbb |
| public static final int _newarray = 188; // 0xbc |
| public static final int _anewarray = 189; // 0xbd |
| public static final int _arraylength = 190; // 0xbe |
| public static final int _athrow = 191; // 0xbf |
| public static final int _checkcast = 192; // 0xc0 |
| public static final int _instanceof = 193; // 0xc1 |
| public static final int _monitorenter = 194; // 0xc2 |
| public static final int _monitorexit = 195; // 0xc3 |
| public static final int _wide = 196; // 0xc4 |
| public static final int _multianewarray = 197; // 0xc5 |
| public static final int _ifnull = 198; // 0xc6 |
| public static final int _ifnonnull = 199; // 0xc7 |
| public static final int _goto_w = 200; // 0xc8 |
| public static final int _jsr_w = 201; // 0xc9 |
| public static final int _breakpoint = 202; // 0xca |
| |
| public static final int number_of_java_codes = 203; |
| |
| // JVM bytecodes |
| public static final int _fast_agetfield = number_of_java_codes; |
| public static final int _fast_bgetfield = 204; |
| public static final int _fast_cgetfield = 205; |
| public static final int _fast_dgetfield = 206; |
| public static final int _fast_fgetfield = 207; |
| public static final int _fast_igetfield = 208; |
| public static final int _fast_lgetfield = 209; |
| public static final int _fast_sgetfield = 210; |
| public static final int _fast_aputfield = 211; |
| public static final int _fast_bputfield = 212; |
| public static final int _fast_zputfield = 213; |
| public static final int _fast_cputfield = 214; |
| public static final int _fast_dputfield = 215; |
| public static final int _fast_fputfield = 216; |
| public static final int _fast_iputfield = 217; |
| public static final int _fast_lputfield = 218; |
| public static final int _fast_sputfield = 219; |
| public static final int _fast_aload_0 = 220; |
| public static final int _fast_iaccess_0 = 221; |
| public static final int _fast_aaccess_0 = 222; |
| public static final int _fast_faccess_0 = 223; |
| public static final int _fast_iload = 224; |
| public static final int _fast_iload2 = 225; |
| public static final int _fast_icaload = 226; |
| public static final int _fast_invokevfinal = 227; |
| public static final int _fast_linearswitch = 228; |
| public static final int _fast_binaryswitch = 229; |
| public static final int _fast_aldc = 230; |
| public static final int _fast_aldc_w = 231; |
| public static final int _return_register_finalizer = 232; |
| public static final int _invokehandle = 233; |
| public static final int _shouldnotreachhere = 234; // For debugging |
| |
| public static final int number_of_codes = 235; |
| |
| // Flag bits derived from format strings, can_trap, can_rewrite, etc.: |
| // semantic flags: |
| static final int _bc_can_trap = 1<<0; // bytecode execution can trap or block |
| static final int _bc_can_rewrite = 1<<1; // bytecode execution has an alternate form |
| |
| // format bits (determined only by the format string): |
| static final int _fmt_has_c = 1<<2; // constant, such as sipush "bcc" |
| static final int _fmt_has_j = 1<<3; // constant pool cache index, such as getfield "bjj" |
| static final int _fmt_has_k = 1<<4; // constant pool index, such as ldc "bk" |
| static final int _fmt_has_i = 1<<5; // local index, such as iload |
| static final int _fmt_has_o = 1<<6; // offset, such as ifeq |
| static final int _fmt_has_nbo = 1<<7; // contains native-order field(s) |
| static final int _fmt_has_u2 = 1<<8; // contains double-byte field(s) |
| static final int _fmt_has_u4 = 1<<9; // contains quad-byte field |
| static final int _fmt_not_variable = 1<<10; // not of variable length (simple or wide) |
| static final int _fmt_not_simple = 1<<11; // either wide or variable length |
| static final int _all_fmt_bits = (_fmt_not_simple*2 - _fmt_has_c); |
| |
| // Example derived format syndromes: |
| static final int _fmt_b = _fmt_not_variable; |
| static final int _fmt_bc = _fmt_b | _fmt_has_c; |
| static final int _fmt_bi = _fmt_b | _fmt_has_i; |
| static final int _fmt_bkk = _fmt_b | _fmt_has_k | _fmt_has_u2; |
| static final int _fmt_bJJ = _fmt_b | _fmt_has_j | _fmt_has_u2 | _fmt_has_nbo; |
| static final int _fmt_bo2 = _fmt_b | _fmt_has_o | _fmt_has_u2; |
| static final int _fmt_bo4 = _fmt_b | _fmt_has_o | _fmt_has_u4; |
| |
| |
| public static int specialLengthAt(Method method, int bci) { |
| int code = codeAt(method, bci); |
| switch (code) { |
| case _wide: |
| return wideLengthFor(method.getBytecodeOrBPAt(bci + 1)); |
| case _tableswitch: |
| { |
| int alignedBCI = Bits.roundTo(bci + 1, jintSize); |
| int lo = method.getBytecodeIntArg(alignedBCI + 1*jintSize); |
| int hi = method.getBytecodeIntArg(alignedBCI + 2*jintSize); |
| return (alignedBCI - bci) + (3 + hi - lo + 1)*jintSize; |
| } |
| |
| case _lookupswitch: // fall through |
| case _fast_binaryswitch: // fall through |
| case _fast_linearswitch: |
| { |
| int alignedBCI = Bits.roundTo(bci + 1, jintSize); |
| int npairs = method.getBytecodeIntArg(alignedBCI + jintSize); |
| return (alignedBCI - bci) + (2 + 2*npairs)*jintSize; |
| } |
| |
| } |
| throw new RuntimeException("should not reach here"); |
| } |
| |
| // Conversion |
| public static void check(int code) { |
| if (Assert.ASSERTS_ENABLED) { |
| Assert.that(isDefined(code), "illegal code " + code); |
| } |
| } |
| public static void wideCheck(int code) { |
| if (Assert.ASSERTS_ENABLED) { |
| Assert.that(wideIsDefined(code), "illegal code " + code); |
| } |
| } |
| |
| /** Fetches a bytecode, hiding breakpoints as necessary */ |
| public static int codeAt(Method method, int bci) { |
| int res = codeOrBPAt(method, bci); |
| if (res == _breakpoint) { |
| res = method.getOrigBytecodeAt(bci); |
| } |
| return res; |
| } |
| |
| /** Fetches a bytecode or a breakpoint */ |
| public static int codeOrBPAt(Method method, int bci) { |
| return method.getBytecodeOrBPAt(bci); |
| } |
| |
| public static boolean isActiveBreakpointAt(Method method, int bci) { |
| return (codeOrBPAt(method, bci) == _breakpoint); |
| } |
| |
| // find a bytecode, behind a breakpoint if necessary: |
| // FIXME: not yet implementable |
| // static Code non_breakpoint_code_at(address bcp, Method* method = null); |
| |
| // Bytecode attributes |
| public static boolean isDefined (int code) { return 0 <= code && code < number_of_codes && flags(code, false) != 0; } |
| public static boolean wideIsDefined(int code) { return isDefined(code) && flags(code, true) != 0; } |
| public static String name (int code) { check(code); return _name [code]; } |
| public static String format (int code) { check(code); return _format [code]; } |
| public static String wideFormat (int code) { wideCheck(code); return _wide_format [code]; } |
| public static int resultType (int code) { check(code); return _result_type [code]; } |
| public static int depth (int code) { check(code); return _depth [code]; } |
| public static int lengthFor (int code) { check(code); return _lengths [code] & 0xF; } |
| public static int wideLengthFor(int code) { check(code); return _lengths [code] >> 4; } |
| public static boolean canTrap (int code) { check(code); return has_all_flags(code, _bc_can_trap, false); } |
| public static int javaCode (int code) { check(code); return _java_code [code]; } |
| public static boolean canRewrite (int code) { check(code); return has_all_flags(code, _bc_can_rewrite, false); } |
| public static boolean native_byte_order(int code) { check(code); return has_all_flags(code, _fmt_has_nbo, false); } |
| public static boolean uses_cp_cache (int code) { check(code); return has_all_flags(code, _fmt_has_j, false); } |
| public static int lengthAt (Method method, int bci) { int l = lengthFor(codeAt(method, bci)); return l > 0 ? l : specialLengthAt(method, bci); } |
| public static int javaLengthAt (Method method, int bci) { int l = lengthFor(javaCode(codeAt(method, bci))); return l > 0 ? l : specialLengthAt(method, bci); } |
| public static boolean isJavaCode (int code) { return 0 <= code && code < number_of_java_codes; } |
| public static boolean isFastCode (int code) { return number_of_java_codes <= code && code < number_of_codes; } |
| |
| public static boolean isAload (int code) { return (code == _aload || code == _aload_0 || code == _aload_1 |
| || code == _aload_2 || code == _aload_3); } |
| public static boolean isAstore (int code) { return (code == _astore || code == _astore_0 || code == _astore_1 |
| || code == _astore_2 || code == _astore_3); } |
| |
| public static boolean isZeroConst (int code) { return (code == _aconst_null || code == _iconst_0 |
| || code == _fconst_0 || code == _dconst_0); } |
| |
| static int flags (int code, boolean is_wide) { |
| assert code == (code & 0xff) : "must be a byte"; |
| return _flags[code + (is_wide ? 256 : 0)]; |
| } |
| static int format_bits (int code, boolean is_wide) { return flags(code, is_wide) & _all_fmt_bits; } |
| static boolean has_all_flags (int code, int test_flags, boolean is_wide) { |
| return (flags(code, is_wide) & test_flags) == test_flags; |
| } |
| |
| static char compute_flags(String format) { |
| return compute_flags(format, 0); |
| } |
| static char compute_flags(String format, int more_flags) { |
| if (format == null) return 0; // not even more_flags |
| int flags = more_flags; |
| int fp = 0; |
| if (format.length() == 0) { |
| flags |= _fmt_not_simple; // but variable |
| } else { |
| switch (format.charAt(fp)) { |
| case 'b': |
| flags |= _fmt_not_variable; // but simple |
| ++fp; // skip 'b' |
| break; |
| case 'w': |
| flags |= _fmt_not_variable | _fmt_not_simple; |
| ++fp; // skip 'w' |
| assert(format.charAt(fp) == 'b') : "wide format must start with 'wb'"; |
| ++fp; // skip 'b' |
| break; |
| } |
| } |
| |
| boolean has_nbo = false, has_jbo = false; |
| int has_size = 0; |
| while (fp < format.length()) { |
| int this_flag = 0; |
| char fc = format.charAt(fp++); |
| switch (fc) { |
| case '_': continue; // ignore these |
| |
| case 'j': this_flag = _fmt_has_j; has_jbo = true; break; |
| case 'k': this_flag = _fmt_has_k; has_jbo = true; break; |
| case 'i': this_flag = _fmt_has_i; has_jbo = true; break; |
| case 'c': this_flag = _fmt_has_c; has_jbo = true; break; |
| case 'o': this_flag = _fmt_has_o; has_jbo = true; break; |
| |
| // uppercase versions mark native byte order (from Rewriter) |
| // actually, only the 'J' case happens currently |
| case 'J': this_flag = _fmt_has_j; has_nbo = true; break; |
| case 'K': this_flag = _fmt_has_k; has_nbo = true; break; |
| case 'I': this_flag = _fmt_has_i; has_nbo = true; break; |
| case 'C': this_flag = _fmt_has_c; has_nbo = true; break; |
| case 'O': this_flag = _fmt_has_o; has_nbo = true; break; |
| default: assert false : "bad char in format"; |
| } |
| |
| flags |= this_flag; |
| |
| assert !(has_jbo && has_nbo) : "mixed byte orders in format"; |
| if (has_nbo) |
| flags |= _fmt_has_nbo; |
| |
| int this_size = 1; |
| if (fp < format.length() && format.charAt(fp) == fc) { |
| // advance beyond run of the same characters |
| this_size = 2; |
| while (fp + 1 < format.length() && format.charAt(++fp) == fc) this_size++; |
| switch (this_size) { |
| case 2: flags |= _fmt_has_u2; break; |
| case 4: flags |= _fmt_has_u4; break; |
| default: assert false : "bad rep count in format"; |
| } |
| } |
| assert has_size == 0 || // no field yet |
| this_size == has_size || // same size |
| this_size < has_size && fp == format.length() : // last field can be short |
| "mixed field sizes in format"; |
| has_size = this_size; |
| } |
| |
| assert flags == (char)flags : "change _format_flags"; |
| return (char)flags; |
| } |
| |
| |
| //---------------------------------------------------------------------- |
| // Internals only below this point |
| // |
| |
| private static String[] _name; |
| private static String[] _format; |
| private static String[] _wide_format; |
| private static int[] _result_type; |
| private static byte[] _depth; |
| private static byte[] _lengths; |
| private static int[] _java_code; |
| private static char[] _flags; |
| |
| static { |
| _name = new String [number_of_codes]; |
| _format = new String [number_of_codes]; |
| _wide_format = new String [number_of_codes]; |
| _result_type = new int [number_of_codes]; // See BasicType.java |
| _depth = new byte [number_of_codes]; |
| _lengths = new byte [number_of_codes]; |
| _java_code = new int [number_of_codes]; |
| _flags = new char[256 * 2]; // all second page for wide formats |
| |
| // In case we want to fetch this information from the VM in the |
| // future |
| VM.registerVMInitializedObserver(new Observer() { |
| public void update(Observable o, Object data) { |
| initialize(); |
| } |
| }); |
| } |
| |
| private static final int jintSize = 4; |
| |
| // private static String[] _name = new String [number_of_codes]; |
| // private static String[] _format = new String [number_of_codes]; |
| // private static String[] _wide_format = new String [number_of_codes]; |
| // private static int[] _result_type = new int [number_of_codes]; // See BasicType.java |
| // private static byte[] _depth = new byte [number_of_codes]; |
| // private static byte[] _length = new byte [number_of_codes]; |
| // private static boolean[] _can_trap = new boolean[number_of_codes]; |
| // private static int[] _java_code = new int [number_of_codes]; |
| // private static boolean[] _can_rewrite = new boolean[number_of_codes]; |
| |
| // Initialization |
| private static void initialize() { |
| if (Assert.ASSERTS_ENABLED) { |
| Assert.that(number_of_codes <= 256, "too many bytecodes"); |
| } |
| |
| // Format strings interpretation: |
| // |
| // b: bytecode |
| // c: signed constant, Java byte-ordering |
| // i: unsigned index , Java byte-ordering |
| // j: unsigned index , native byte-ordering |
| // o: branch offset , Java byte-ordering |
| // _: unused/ignored |
| // w: wide bytecode |
| // |
| // Note: Right now the format strings are used for 2 purposes: |
| // 1. to specify the length of the bytecode |
| // (= number of characters in format string) |
| // 2. to specify the bytecode attributes |
| // |
| // The bytecode attributes are currently used only for bytecode tracing |
| // (see BytecodeTracer); thus if more specific format information is |
| // used, one would also have to adjust the bytecode tracer. |
| // |
| // Note: For bytecodes with variable length, the format string is the empty string. |
| |
| // Note 1: null for the format string means the bytecode doesn't exist |
| // in that form. |
| // |
| // Note 2: The result type is T_ILLEGAL for bytecodes where the top of stack |
| // type after execution is not only determined by the bytecode itself. |
| |
| // Java bytecodes |
| // bytecode bytecode name format wide f. result tp stk traps |
| def(_nop , "nop" , "b" , null , BasicType.getTVoid() , 0, false); |
| def(_aconst_null , "aconst_null" , "b" , null , BasicType.getTObject() , 1, false); |
| def(_iconst_m1 , "iconst_m1" , "b" , null , BasicType.getTInt() , 1, false); |
| def(_iconst_0 , "iconst_0" , "b" , null , BasicType.getTInt() , 1, false); |
| def(_iconst_1 , "iconst_1" , "b" , null , BasicType.getTInt() , 1, false); |
| def(_iconst_2 , "iconst_2" , "b" , null , BasicType.getTInt() , 1, false); |
| def(_iconst_3 , "iconst_3" , "b" , null , BasicType.getTInt() , 1, false); |
| def(_iconst_4 , "iconst_4" , "b" , null , BasicType.getTInt() , 1, false); |
| def(_iconst_5 , "iconst_5" , "b" , null , BasicType.getTInt() , 1, false); |
| def(_lconst_0 , "lconst_0" , "b" , null , BasicType.getTLong() , 2, false); |
| def(_lconst_1 , "lconst_1" , "b" , null , BasicType.getTLong() , 2, false); |
| def(_fconst_0 , "fconst_0" , "b" , null , BasicType.getTFloat() , 1, false); |
| def(_fconst_1 , "fconst_1" , "b" , null , BasicType.getTFloat() , 1, false); |
| def(_fconst_2 , "fconst_2" , "b" , null , BasicType.getTFloat() , 1, false); |
| def(_dconst_0 , "dconst_0" , "b" , null , BasicType.getTDouble() , 2, false); |
| def(_dconst_1 , "dconst_1" , "b" , null , BasicType.getTDouble() , 2, false); |
| def(_bipush , "bipush" , "bc" , null , BasicType.getTInt() , 1, false); |
| def(_sipush , "sipush" , "bcc" , null , BasicType.getTInt() , 1, false); |
| def(_ldc , "ldc" , "bk" , null , BasicType.getTIllegal(), 1, true ); |
| def(_ldc_w , "ldc_w" , "bkk" , null , BasicType.getTIllegal(), 1, true ); |
| def(_ldc2_w , "ldc2_w" , "bkk" , null , BasicType.getTIllegal(), 2, true ); |
| def(_iload , "iload" , "bi" , "wbii" , BasicType.getTInt() , 1, false); |
| def(_lload , "lload" , "bi" , "wbii" , BasicType.getTLong() , 2, false); |
| def(_fload , "fload" , "bi" , "wbii" , BasicType.getTFloat() , 1, false); |
| def(_dload , "dload" , "bi" , "wbii" , BasicType.getTDouble() , 2, false); |
| def(_aload , "aload" , "bi" , "wbii" , BasicType.getTObject() , 1, false); |
| def(_iload_0 , "iload_0" , "b" , null , BasicType.getTInt() , 1, false); |
| def(_iload_1 , "iload_1" , "b" , null , BasicType.getTInt() , 1, false); |
| def(_iload_2 , "iload_2" , "b" , null , BasicType.getTInt() , 1, false); |
| def(_iload_3 , "iload_3" , "b" , null , BasicType.getTInt() , 1, false); |
| def(_lload_0 , "lload_0" , "b" , null , BasicType.getTLong() , 2, false); |
| def(_lload_1 , "lload_1" , "b" , null , BasicType.getTLong() , 2, false); |
| def(_lload_2 , "lload_2" , "b" , null , BasicType.getTLong() , 2, false); |
| def(_lload_3 , "lload_3" , "b" , null , BasicType.getTLong() , 2, false); |
| def(_fload_0 , "fload_0" , "b" , null , BasicType.getTFloat() , 1, false); |
| def(_fload_1 , "fload_1" , "b" , null , BasicType.getTFloat() , 1, false); |
| def(_fload_2 , "fload_2" , "b" , null , BasicType.getTFloat() , 1, false); |
| def(_fload_3 , "fload_3" , "b" , null , BasicType.getTFloat() , 1, false); |
| def(_dload_0 , "dload_0" , "b" , null , BasicType.getTDouble() , 2, false); |
| def(_dload_1 , "dload_1" , "b" , null , BasicType.getTDouble() , 2, false); |
| def(_dload_2 , "dload_2" , "b" , null , BasicType.getTDouble() , 2, false); |
| def(_dload_3 , "dload_3" , "b" , null , BasicType.getTDouble() , 2, false); |
| def(_aload_0 , "aload_0" , "b" , null , BasicType.getTObject() , 1, true ); // rewriting in interpreter |
| def(_aload_1 , "aload_1" , "b" , null , BasicType.getTObject() , 1, false); |
| def(_aload_2 , "aload_2" , "b" , null , BasicType.getTObject() , 1, false); |
| def(_aload_3 , "aload_3" , "b" , null , BasicType.getTObject() , 1, false); |
| def(_iaload , "iaload" , "b" , null , BasicType.getTInt() , -1, true ); |
| def(_laload , "laload" , "b" , null , BasicType.getTLong() , 0, true ); |
| def(_faload , "faload" , "b" , null , BasicType.getTFloat() , -1, true ); |
| def(_daload , "daload" , "b" , null , BasicType.getTDouble() , 0, true ); |
| def(_aaload , "aaload" , "b" , null , BasicType.getTObject() , -1, true ); |
| def(_baload , "baload" , "b" , null , BasicType.getTInt() , -1, true ); |
| def(_caload , "caload" , "b" , null , BasicType.getTInt() , -1, true ); |
| def(_saload , "saload" , "b" , null , BasicType.getTInt() , -1, true ); |
| def(_istore , "istore" , "bi" , "wbii" , BasicType.getTVoid() , -1, false); |
| def(_lstore , "lstore" , "bi" , "wbii" , BasicType.getTVoid() , -2, false); |
| def(_fstore , "fstore" , "bi" , "wbii" , BasicType.getTVoid() , -1, false); |
| def(_dstore , "dstore" , "bi" , "wbii" , BasicType.getTVoid() , -2, false); |
| def(_astore , "astore" , "bi" , "wbii" , BasicType.getTVoid() , -1, false); |
| def(_istore_0 , "istore_0" , "b" , null , BasicType.getTVoid() , -1, false); |
| def(_istore_1 , "istore_1" , "b" , null , BasicType.getTVoid() , -1, false); |
| def(_istore_2 , "istore_2" , "b" , null , BasicType.getTVoid() , -1, false); |
| def(_istore_3 , "istore_3" , "b" , null , BasicType.getTVoid() , -1, false); |
| def(_lstore_0 , "lstore_0" , "b" , null , BasicType.getTVoid() , -2, false); |
| def(_lstore_1 , "lstore_1" , "b" , null , BasicType.getTVoid() , -2, false); |
| def(_lstore_2 , "lstore_2" , "b" , null , BasicType.getTVoid() , -2, false); |
| def(_lstore_3 , "lstore_3" , "b" , null , BasicType.getTVoid() , -2, false); |
| def(_fstore_0 , "fstore_0" , "b" , null , BasicType.getTVoid() , -1, false); |
| def(_fstore_1 , "fstore_1" , "b" , null , BasicType.getTVoid() , -1, false); |
| def(_fstore_2 , "fstore_2" , "b" , null , BasicType.getTVoid() , -1, false); |
| def(_fstore_3 , "fstore_3" , "b" , null , BasicType.getTVoid() , -1, false); |
| def(_dstore_0 , "dstore_0" , "b" , null , BasicType.getTVoid() , -2, false); |
| def(_dstore_1 , "dstore_1" , "b" , null , BasicType.getTVoid() , -2, false); |
| def(_dstore_2 , "dstore_2" , "b" , null , BasicType.getTVoid() , -2, false); |
| def(_dstore_3 , "dstore_3" , "b" , null , BasicType.getTVoid() , -2, false); |
| def(_astore_0 , "astore_0" , "b" , null , BasicType.getTVoid() , -1, false); |
| def(_astore_1 , "astore_1" , "b" , null , BasicType.getTVoid() , -1, false); |
| def(_astore_2 , "astore_2" , "b" , null , BasicType.getTVoid() , -1, false); |
| def(_astore_3 , "astore_3" , "b" , null , BasicType.getTVoid() , -1, false); |
| def(_iastore , "iastore" , "b" , null , BasicType.getTVoid() , -3, true ); |
| def(_lastore , "lastore" , "b" , null , BasicType.getTVoid() , -4, true ); |
| def(_fastore , "fastore" , "b" , null , BasicType.getTVoid() , -3, true ); |
| def(_dastore , "dastore" , "b" , null , BasicType.getTVoid() , -4, true ); |
| def(_aastore , "aastore" , "b" , null , BasicType.getTVoid() , -3, true ); |
| def(_bastore , "bastore" , "b" , null , BasicType.getTVoid() , -3, true ); |
| def(_castore , "castore" , "b" , null , BasicType.getTVoid() , -3, true ); |
| def(_sastore , "sastore" , "b" , null , BasicType.getTVoid() , -3, true ); |
| def(_pop , "pop" , "b" , null , BasicType.getTVoid() , -1, false); |
| def(_pop2 , "pop2" , "b" , null , BasicType.getTVoid() , -2, false); |
| def(_dup , "dup" , "b" , null , BasicType.getTVoid() , 1, false); |
| def(_dup_x1 , "dup_x1" , "b" , null , BasicType.getTVoid() , 1, false); |
| def(_dup_x2 , "dup_x2" , "b" , null , BasicType.getTVoid() , 1, false); |
| def(_dup2 , "dup2" , "b" , null , BasicType.getTVoid() , 2, false); |
| def(_dup2_x1 , "dup2_x1" , "b" , null , BasicType.getTVoid() , 2, false); |
| def(_dup2_x2 , "dup2_x2" , "b" , null , BasicType.getTVoid() , 2, false); |
| def(_swap , "swap" , "b" , null , BasicType.getTVoid() , 0, false); |
| def(_iadd , "iadd" , "b" , null , BasicType.getTInt() , -1, false); |
| def(_ladd , "ladd" , "b" , null , BasicType.getTLong() , -2, false); |
| def(_fadd , "fadd" , "b" , null , BasicType.getTFloat() , -1, false); |
| def(_dadd , "dadd" , "b" , null , BasicType.getTDouble() , -2, false); |
| def(_isub , "isub" , "b" , null , BasicType.getTInt() , -1, false); |
| def(_lsub , "lsub" , "b" , null , BasicType.getTLong() , -2, false); |
| def(_fsub , "fsub" , "b" , null , BasicType.getTFloat() , -1, false); |
| def(_dsub , "dsub" , "b" , null , BasicType.getTDouble() , -2, false); |
| def(_imul , "imul" , "b" , null , BasicType.getTInt() , -1, false); |
| def(_lmul , "lmul" , "b" , null , BasicType.getTLong() , -2, false); |
| def(_fmul , "fmul" , "b" , null , BasicType.getTFloat() , -1, false); |
| def(_dmul , "dmul" , "b" , null , BasicType.getTDouble() , -2, false); |
| def(_idiv , "idiv" , "b" , null , BasicType.getTInt() , -1, true ); |
| def(_ldiv , "ldiv" , "b" , null , BasicType.getTLong() , -2, true ); |
| def(_fdiv , "fdiv" , "b" , null , BasicType.getTFloat() , -1, false); |
| def(_ddiv , "ddiv" , "b" , null , BasicType.getTDouble() , -2, false); |
| def(_irem , "irem" , "b" , null , BasicType.getTInt() , -1, true ); |
| def(_lrem , "lrem" , "b" , null , BasicType.getTLong() , -2, true ); |
| def(_frem , "frem" , "b" , null , BasicType.getTFloat() , -1, false); |
| def(_drem , "drem" , "b" , null , BasicType.getTDouble() , -2, false); |
| def(_ineg , "ineg" , "b" , null , BasicType.getTInt() , 0, false); |
| def(_lneg , "lneg" , "b" , null , BasicType.getTLong() , 0, false); |
| def(_fneg , "fneg" , "b" , null , BasicType.getTFloat() , 0, false); |
| def(_dneg , "dneg" , "b" , null , BasicType.getTDouble() , 0, false); |
| def(_ishl , "ishl" , "b" , null , BasicType.getTInt() , -1, false); |
| def(_lshl , "lshl" , "b" , null , BasicType.getTLong() , -1, false); |
| def(_ishr , "ishr" , "b" , null , BasicType.getTInt() , -1, false); |
| def(_lshr , "lshr" , "b" , null , BasicType.getTLong() , -1, false); |
| def(_iushr , "iushr" , "b" , null , BasicType.getTInt() , -1, false); |
| def(_lushr , "lushr" , "b" , null , BasicType.getTLong() , -1, false); |
| def(_iand , "iand" , "b" , null , BasicType.getTInt() , -1, false); |
| def(_land , "land" , "b" , null , BasicType.getTLong() , -2, false); |
| def(_ior , "ior" , "b" , null , BasicType.getTInt() , -1, false); |
| def(_lor , "lor" , "b" , null , BasicType.getTLong() , -2, false); |
| def(_ixor , "ixor" , "b" , null , BasicType.getTInt() , -1, false); |
| def(_lxor , "lxor" , "b" , null , BasicType.getTLong() , -2, false); |
| def(_iinc , "iinc" , "bic" , "wbiicc", BasicType.getTVoid() , 0, false); |
| def(_i2l , "i2l" , "b" , null , BasicType.getTLong() , 1, false); |
| def(_i2f , "i2f" , "b" , null , BasicType.getTFloat() , 0, false); |
| def(_i2d , "i2d" , "b" , null , BasicType.getTDouble() , 1, false); |
| def(_l2i , "l2i" , "b" , null , BasicType.getTInt() , -1, false); |
| def(_l2f , "l2f" , "b" , null , BasicType.getTFloat() , -1, false); |
| def(_l2d , "l2d" , "b" , null , BasicType.getTDouble() , 0, false); |
| def(_f2i , "f2i" , "b" , null , BasicType.getTInt() , 0, false); |
| def(_f2l , "f2l" , "b" , null , BasicType.getTLong() , 1, false); |
| def(_f2d , "f2d" , "b" , null , BasicType.getTDouble() , 1, false); |
| def(_d2i , "d2i" , "b" , null , BasicType.getTInt() , -1, false); |
| def(_d2l , "d2l" , "b" , null , BasicType.getTLong() , 0, false); |
| def(_d2f , "d2f" , "b" , null , BasicType.getTFloat() , -1, false); |
| def(_i2b , "i2b" , "b" , null , BasicType.getTByte() , 0, false); |
| def(_i2c , "i2c" , "b" , null , BasicType.getTChar() , 0, false); |
| def(_i2s , "i2s" , "b" , null , BasicType.getTShort() , 0, false); |
| def(_lcmp , "lcmp" , "b" , null , BasicType.getTVoid() , -3, false); |
| def(_fcmpl , "fcmpl" , "b" , null , BasicType.getTVoid() , -1, false); |
| def(_fcmpg , "fcmpg" , "b" , null , BasicType.getTVoid() , -1, false); |
| def(_dcmpl , "dcmpl" , "b" , null , BasicType.getTVoid() , -3, false); |
| def(_dcmpg , "dcmpg" , "b" , null , BasicType.getTVoid() , -3, false); |
| def(_ifeq , "ifeq" , "boo" , null , BasicType.getTVoid() , -1, false); |
| def(_ifne , "ifne" , "boo" , null , BasicType.getTVoid() , -1, false); |
| def(_iflt , "iflt" , "boo" , null , BasicType.getTVoid() , -1, false); |
| def(_ifge , "ifge" , "boo" , null , BasicType.getTVoid() , -1, false); |
| def(_ifgt , "ifgt" , "boo" , null , BasicType.getTVoid() , -1, false); |
| def(_ifle , "ifle" , "boo" , null , BasicType.getTVoid() , -1, false); |
| def(_if_icmpeq , "if_icmpeq" , "boo" , null , BasicType.getTVoid() , -2, false); |
| def(_if_icmpne , "if_icmpne" , "boo" , null , BasicType.getTVoid() , -2, false); |
| def(_if_icmplt , "if_icmplt" , "boo" , null , BasicType.getTVoid() , -2, false); |
| def(_if_icmpge , "if_icmpge" , "boo" , null , BasicType.getTVoid() , -2, false); |
| def(_if_icmpgt , "if_icmpgt" , "boo" , null , BasicType.getTVoid() , -2, false); |
| def(_if_icmple , "if_icmple" , "boo" , null , BasicType.getTVoid() , -2, false); |
| def(_if_acmpeq , "if_acmpeq" , "boo" , null , BasicType.getTVoid() , -2, false); |
| def(_if_acmpne , "if_acmpne" , "boo" , null , BasicType.getTVoid() , -2, false); |
| def(_goto , "goto" , "boo" , null , BasicType.getTVoid() , 0, false); |
| def(_jsr , "jsr" , "boo" , null , BasicType.getTInt() , 0, false); |
| def(_ret , "ret" , "bi" , "wbii" , BasicType.getTVoid() , 0, false); |
| def(_tableswitch , "tableswitch" , "" , null , BasicType.getTVoid() , -1, false); // may have backward branches |
| def(_lookupswitch , "lookupswitch" , "" , null , BasicType.getTVoid() , -1, false); // rewriting in interpreter |
| def(_ireturn , "ireturn" , "b" , null , BasicType.getTInt() , -1, true ); |
| def(_lreturn , "lreturn" , "b" , null , BasicType.getTLong() , -2, true ); |
| def(_freturn , "freturn" , "b" , null , BasicType.getTFloat() , -1, true ); |
| def(_dreturn , "dreturn" , "b" , null , BasicType.getTDouble() , -2, true ); |
| def(_areturn , "areturn" , "b" , null , BasicType.getTObject() , -1, true ); |
| def(_return , "return" , "b" , null , BasicType.getTVoid() , 0, true ); |
| def(_getstatic , "getstatic" , "bJJ" , null , BasicType.getTIllegal(), 1, true ); |
| def(_putstatic , "putstatic" , "bJJ" , null , BasicType.getTIllegal(), -1, true ); |
| def(_getfield , "getfield" , "bJJ" , null , BasicType.getTIllegal(), 0, true ); |
| def(_putfield , "putfield" , "bJJ" , null , BasicType.getTIllegal(), -2, true ); |
| def(_invokevirtual , "invokevirtual" , "bJJ" , null , BasicType.getTIllegal(), -1, true ); |
| def(_invokespecial , "invokespecial" , "bJJ" , null , BasicType.getTIllegal(), -1, true ); |
| def(_invokestatic , "invokestatic" , "bJJ" , null , BasicType.getTIllegal(), 0, true ); |
| def(_invokeinterface , "invokeinterface" , "bJJ__", null , BasicType.getTIllegal(), -1, true ); |
| def(_invokedynamic , "invokedynamic" , "bJJJJ", null , BasicType.getTIllegal(), 0, true ); |
| def(_new , "new" , "bkk" , null , BasicType.getTObject() , 1, true ); |
| def(_newarray , "newarray" , "bc" , null , BasicType.getTObject() , 0, true ); |
| def(_anewarray , "anewarray" , "bkk" , null , BasicType.getTObject() , 0, true ); |
| def(_arraylength , "arraylength" , "b" , null , BasicType.getTVoid() , 0, true ); |
| def(_athrow , "athrow" , "b" , null , BasicType.getTVoid() , -1, true ); |
| def(_checkcast , "checkcast" , "bkk" , null , BasicType.getTObject() , 0, true ); |
| def(_instanceof , "instanceof" , "bkk" , null , BasicType.getTInt() , 0, true ); |
| def(_monitorenter , "monitorenter" , "b" , null , BasicType.getTVoid() , -1, true ); |
| def(_monitorexit , "monitorexit" , "b" , null , BasicType.getTVoid() , -1, true ); |
| def(_wide , "wide" , "" , null , BasicType.getTVoid() , 0, false); |
| def(_multianewarray , "multianewarray" , "bkkc" , null , BasicType.getTObject() , 1, true ); |
| def(_ifnull , "ifnull" , "boo" , null , BasicType.getTVoid() , -1, false); |
| def(_ifnonnull , "ifnonnull" , "boo" , null , BasicType.getTVoid() , -1, false); |
| def(_goto_w , "goto_w" , "boooo", null , BasicType.getTVoid() , 0, false); |
| def(_jsr_w , "jsr_w" , "boooo", null , BasicType.getTInt() , 0, false); |
| def(_breakpoint , "breakpoint" , "" , null , BasicType.getTVoid() , 0, true ); |
| |
| // JVM bytecodes |
| // bytecode bytecode name format wide f. result tp stk traps std code |
| |
| def(_fast_agetfield , "fast_agetfield" , "bJJ" , null , BasicType.getTObject() , 0, true , _getfield ); |
| def(_fast_bgetfield , "fast_bgetfield" , "bJJ" , null , BasicType.getTInt() , 0, true , _getfield ); |
| def(_fast_cgetfield , "fast_cgetfield" , "bJJ" , null , BasicType.getTChar() , 0, true , _getfield ); |
| def(_fast_dgetfield , "fast_dgetfield" , "bJJ" , null , BasicType.getTDouble() , 0, true , _getfield ); |
| def(_fast_fgetfield , "fast_fgetfield" , "bJJ" , null , BasicType.getTFloat() , 0, true , _getfield ); |
| def(_fast_igetfield , "fast_igetfield" , "bJJ" , null , BasicType.getTInt() , 0, true , _getfield ); |
| def(_fast_lgetfield , "fast_lgetfield" , "bJJ" , null , BasicType.getTLong() , 0, true , _getfield ); |
| def(_fast_sgetfield , "fast_sgetfield" , "bJJ" , null , BasicType.getTShort() , 0, true , _getfield ); |
| |
| def(_fast_aputfield , "fast_aputfield" , "bJJ" , null , BasicType.getTObject() , 0, true , _putfield ); |
| def(_fast_bputfield , "fast_bputfield" , "bJJ" , null , BasicType.getTInt() , 0, true , _putfield ); |
| def(_fast_zputfield , "fast_zputfield" , "bJJ" , null , BasicType.getTInt() , 0, true , _putfield ); |
| def(_fast_cputfield , "fast_cputfield" , "bJJ" , null , BasicType.getTChar() , 0, true , _putfield ); |
| def(_fast_dputfield , "fast_dputfield" , "bJJ" , null , BasicType.getTDouble() , 0, true , _putfield ); |
| def(_fast_fputfield , "fast_fputfield" , "bJJ" , null , BasicType.getTFloat() , 0, true , _putfield ); |
| def(_fast_iputfield , "fast_iputfield" , "bJJ" , null , BasicType.getTInt() , 0, true , _putfield ); |
| def(_fast_lputfield , "fast_lputfield" , "bJJ" , null , BasicType.getTLong() , 0, true , _putfield ); |
| def(_fast_sputfield , "fast_sputfield" , "bJJ" , null , BasicType.getTShort() , 0, true , _putfield ); |
| |
| def(_fast_aload_0 , "fast_aload_0" , "b" , null , BasicType.getTObject() , 1, true , _aload_0 ); |
| def(_fast_iaccess_0 , "fast_iaccess_0" , "b_JJ" , null , BasicType.getTInt() , 1, true , _aload_0 ); |
| def(_fast_aaccess_0 , "fast_aaccess_0" , "b_JJ" , null , BasicType.getTObject() , 1, true , _aload_0 ); |
| def(_fast_faccess_0 , "fast_faccess_0" , "b_JJ" , null , BasicType.getTObject() , 1, true , _aload_0 ); |
| |
| def(_fast_iload , "fast_iload" , "bi" , null , BasicType.getTInt() , 1, false, _iload ); |
| def(_fast_iload2 , "fast_iload2" , "bi_i" , null , BasicType.getTInt() , 2, false, _iload ); |
| def(_fast_icaload , "fast_icaload" , "bi_" , null , BasicType.getTInt() , 0, false, _iload ); |
| |
| // Faster method invocation. |
| def(_fast_invokevfinal , "fast_invokevfinal" , "bJJ" , null , BasicType.getTIllegal(), -1, true, _invokevirtual ); |
| |
| def(_fast_linearswitch , "fast_linearswitch" , "" , null , BasicType.getTVoid() , -1, false, _lookupswitch ); |
| def(_fast_binaryswitch , "fast_binaryswitch" , "" , null , BasicType.getTVoid() , -1, false, _lookupswitch ); |
| def(_fast_aldc , "fast_aldc" , "bj" , null , BasicType.getTObject(), 1, true, _ldc ); |
| def(_fast_aldc_w , "fast_aldc_w" , "bJJ" , null , BasicType.getTObject(), 1, true, _ldc_w ); |
| |
| def(_return_register_finalizer, "return_register_finalizer", "b" , null , BasicType.getTVoid() , 0, true, _return ); |
| |
| // special handling of signature-polymorphic methods |
| def(_invokehandle , "invokehandle" , "bJJ" , null , BasicType.getTIllegal(), -1, true, _invokevirtual ); |
| |
| def(_shouldnotreachhere , "_shouldnotreachhere" , "b" , null , BasicType.getTVoid() , 0, false); |
| |
| if (Assert.ASSERTS_ENABLED) { |
| // compare can_trap information for each bytecode with the |
| // can_trap information for the corresponding base bytecode |
| // (if a rewritten bytecode can trap, so must the base bytecode) |
| for (int i = 0; i < number_of_codes; i++) { |
| if (isDefined(i)) { |
| int j = javaCode(i); |
| if (canTrap(i) && !canTrap(j)) { |
| Assert.that(false, name(i) + " can trap => " + name(j) + " can trap, too"); |
| } |
| } |
| } |
| } |
| } |
| |
| private static void def(int code, String name, String format, String wide_format, int result_type, int depth, boolean can_trap) { |
| def(code, name, format, wide_format, result_type, depth, can_trap, code); |
| } |
| |
| private static void def(int code, String name, String format, String wide_format, int result_type, int depth, boolean can_trap, int java_code) { |
| if (Assert.ASSERTS_ENABLED) { |
| Assert.that(wide_format == null || format != null, "short form must exist if there's a wide form"); |
| } |
| int len = (format != null ? format.length() : 0); |
| int wlen = (wide_format != null ? wide_format.length() : 0); |
| _name [code] = name; |
| _result_type [code] = result_type; |
| _depth [code] = (byte) depth; |
| _lengths [code] = (byte)((wlen << 4) | (len & 0xF)); |
| _java_code [code] = java_code; |
| _format [code] = format; |
| _wide_format [code] = wide_format; |
| int bc_flags = 0; |
| if (can_trap) bc_flags |= _bc_can_trap; |
| if (java_code != code) bc_flags |= _bc_can_rewrite; |
| _flags[code+0*256] = compute_flags(format, bc_flags); |
| _flags[code+1*256] = compute_flags(wide_format, bc_flags); |
| } |
| } |
