Mercurial > hg > truffle
diff agent/src/share/classes/sun/jvm/hotspot/interpreter/Bytecodes.java @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/agent/src/share/classes/sun/jvm/hotspot/interpreter/Bytecodes.java Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,720 @@ +/* + * Copyright 2001-2004 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.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 _xxxunusedxxx = 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_cputfield = 213; + public static final int _fast_dputfield = 214; + public static final int _fast_fputfield = 215; + public static final int _fast_iputfield = 216; + public static final int _fast_lputfield = 217; + public static final int _fast_sputfield = 218; + public static final int _fast_aload_0 = 219; + public static final int _fast_iaccess_0 = 220; + public static final int _fast_aaccess_0 = 221; + public static final int _fast_faccess_0 = 222; + public static final int _fast_iload = 223; + public static final int _fast_iload2 = 224; + public static final int _fast_icaload = 225; + public static final int _fast_invokevfinal = 226; + public static final int _fast_linearswitch = 227; + public static final int _fast_binaryswitch = 228; + public static final int _shouldnotreachhere = 229; // For debugging + + public static final int number_of_codes = 230; + + 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, methodOop method = null); + + // Bytecode attributes + public static boolean isDefined (int code) { return 0 <= code && code < number_of_codes && _format[code] != null; } + public static boolean wideIsDefined(int code) { return isDefined(code) && _wide_format[code] != null; } + 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 _length [code]; } + public static boolean canTrap (int code) { check(code); return _can_trap [code]; } + public static int javaCode (int code) { check(code); return _java_code [code]; } + public static boolean canRewrite (int code) { check(code); return _can_rewrite [code]; } + public static int wideLengthFor(int code) { wideCheck(code); return wideFormat(code).length(); } + 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); } + + //---------------------------------------------------------------------- + // 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[] _length; + private static boolean[] _can_trap; + private static int[] _java_code; + private static boolean[] _can_rewrite; + + 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]; + _length = new byte [number_of_codes]; + _can_trap = new boolean[number_of_codes]; + _java_code = new int [number_of_codes]; + _can_rewrite = new boolean[number_of_codes]; + + // 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" , "bi" , null , BasicType.getTIllegal(), 1, true ); + def(_ldc_w , "ldc_w" , "bii" , null , BasicType.getTIllegal(), 1, true ); + def(_ldc2_w , "ldc2_w" , "bii" , 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(_xxxunusedxxx , "xxxunusedxxx" , null , null , BasicType.getTVoid() , 0, false); + def(_new , "new" , "bii" , null , BasicType.getTObject() , 1, true ); + def(_newarray , "newarray" , "bc" , null , BasicType.getTObject() , 0, true ); + def(_anewarray , "anewarray" , "bii" , 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" , "bii" , null , BasicType.getTObject() , 0, true ); + def(_instanceof , "instanceof" , "bii" , 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" , "biic" , 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_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(_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"); + } + _name [code] = name; + _format [code] = format; + _wide_format [code] = wide_format; + _result_type [code] = result_type; + _depth [code] = (byte) depth; + _can_trap [code] = can_trap; + _length [code] = (byte) (format != null ? format.length() : 0); + _java_code [code] = java_code; + if (java_code != code) { + _can_rewrite[java_code] = true; + } else { + _can_rewrite[java_code] = false; + } + } +}