/*

 * Copyright (c) 1999, 2012, 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * 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

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 */

package com.sun.tools.javac.jvm;

/** Bytecode instruction codes, as well as typecodes used as

 *  instruction modifiers.

 *

 *  <p><b>This is NOT part of any supported API.

 *  If you write code that depends on this, you do so at your own risk.

 *  This code and its internal interfaces are subject to change or

 *  deletion without notice.</b>

 */

public interface ByteCodes {

    /** Byte code instruction codes.

     */

    int illegal         = -1,

        nop             = 0,

        aconst_null     = 1,

        iconst_m1       = 2,

        iconst_0        = 3,

        iconst_1        = 4,

        iconst_2        = 5,

        iconst_3        = 6,

        iconst_4        = 7,

        iconst_5        = 8,

        lconst_0        = 9,

        lconst_1        = 10,

        fconst_0        = 11,

        fconst_1        = 12,

        fconst_2        = 13,

        dconst_0        = 14,

        dconst_1        = 15,

        bipush          = 16,

        sipush          = 17,

        ldc1            = 18,

        ldc2            = 19,

        ldc2w           = 20,

        iload           = 21,

        lload           = 22,

        fload           = 23,

        dload           = 24,

        aload           = 25,

        iload_0         = 26,

        iload_1         = 27,

        iload_2         = 28,

        iload_3         = 29,

        lload_0         = 30,

        lload_1         = 31,

        lload_2         = 32,

        lload_3         = 33,

        fload_0         = 34,

        fload_1         = 35,

        fload_2         = 36,

        fload_3         = 37,

        dload_0         = 38,

        dload_1         = 39,

        dload_2         = 40,

        dload_3         = 41,

        aload_0         = 42,

        aload_1         = 43,

        aload_2         = 44,

        aload_3         = 45,

        iaload          = 46,

        laload          = 47,

        faload          = 48,

        daload          = 49,

        aaload          = 50,

        baload          = 51,

        caload          = 52,

        saload          = 53,

        istore          = 54,

        lstore          = 55,

        fstore          = 56,

        dstore          = 57,

        astore          = 58,

        istore_0        = 59,

        istore_1        = 60,

        istore_2        = 61,

        istore_3        = 62,

        lstore_0        = 63,

        lstore_1        = 64,

        lstore_2        = 65,

        lstore_3        = 66,

        fstore_0        = 67,

        fstore_1        = 68,

        fstore_2        = 69,

        fstore_3        = 70,

        dstore_0        = 71,

        dstore_1        = 72,

        dstore_2        = 73,

        dstore_3        = 74,

        astore_0        = 75,

        astore_1        = 76,

        astore_2        = 77,

        astore_3        = 78,

        iastore         = 79,

        lastore         = 80,

        fastore         = 81,

        dastore         = 82,

        aastore         = 83,

        bastore         = 84,

        castore         = 85,

        sastore         = 86,

        pop             = 87,

        pop2            = 88,

        dup             = 89,

        dup_x1          = 90,

        dup_x2          = 91,

        dup2            = 92,

        dup2_x1         = 93,

        dup2_x2         = 94,

        swap            = 95,

        iadd            = 96,

        ladd            = 97,

        fadd            = 98,

        dadd            = 99,

        isub            = 100,

        lsub            = 101,

        fsub            = 102,

        dsub            = 103,

        imul            = 104,

        lmul            = 105,

        fmul            = 106,

        dmul            = 107,

        idiv            = 108,

        ldiv            = 109,

        fdiv            = 110,

        ddiv            = 111,

        imod            = 112,

        lmod            = 113,

        fmod            = 114,

        dmod            = 115,

        ineg            = 116,

        lneg            = 117,

        fneg            = 118,

        dneg            = 119,

        ishl            = 120,

        lshl            = 121,

        ishr            = 122,

        lshr            = 123,

        iushr           = 124,

        lushr           = 125,

        iand            = 126,

        land            = 127,

        ior             = 128,

        lor             = 129,

        ixor            = 130,

        lxor            = 131,

        iinc            = 132,

        i2l             = 133,

        i2f             = 134,

        i2d             = 135,

        l2i             = 136,

        l2f             = 137,

        l2d             = 138,

        f2i             = 139,

        f2l             = 140,

        f2d             = 141,

        d2i             = 142,

        d2l             = 143,

        d2f             = 144,

        int2byte        = 145,

        int2char        = 146,

        int2short       = 147,

        lcmp            = 148,

        fcmpl           = 149,

        fcmpg           = 150,

        dcmpl           = 151,

        dcmpg           = 152,

        ifeq            = 153,

        ifne            = 154,

        iflt            = 155,

        ifge            = 156,

        ifgt            = 157,

        ifle            = 158,

        if_icmpeq       = 159,

        if_icmpne       = 160,

        if_icmplt       = 161,

        if_icmpge       = 162,

        if_icmpgt       = 163,

        if_icmple       = 164,

        if_acmpeq       = 165,

        if_acmpne       = 166,

        goto_           = 167,

        jsr             = 168,

        ret             = 169,

        tableswitch     = 170,

        lookupswitch    = 171,

        ireturn         = 172,

        lreturn         = 173,

        freturn         = 174,

        dreturn         = 175,

        areturn         = 176,

        return_         = 177,

        getstatic       = 178,

        putstatic       = 179,

        getfield        = 180,

        putfield        = 181,

        invokevirtual   = 182,

        invokespecial   = 183,

        invokestatic    = 184,

        invokeinterface = 185,

        invokedynamic   = 186,

        new_            = 187,

        newarray        = 188,

        anewarray       = 189,

        arraylength     = 190,

        athrow          = 191,

        checkcast       = 192,

        instanceof_     = 193,

        monitorenter    = 194,

        monitorexit     = 195,

        wide            = 196,

        multianewarray  = 197,

        if_acmp_null    = 198,

        if_acmp_nonnull = 199,

        goto_w          = 200,

        jsr_w           = 201,

        breakpoint      = 202,

        ByteCodeCount   = 203;

    /** Virtual instruction codes; used for constant folding.

     */

    int string_add      = 256,  // string +

        bool_not        = 257,  // boolean !

        bool_and        = 258,  // boolean &&

        bool_or         = 259;  // boolean ||

    /** Virtual opcodes; used for shifts with long shiftcount

     */

    int ishll           = 270,  // int shift left with long count

        lshll           = 271,  // long shift left with long count

        ishrl           = 272,  // int shift right with long count

        lshrl           = 273,  // long shift right with long count

        iushrl          = 274,  // int unsigned shift right with long count

        lushrl          = 275;  // long unsigned shift right with long count

    /** Virtual opcode for null reference checks

     */

    int nullchk         = 276;  // return operand if non-null,

                                // otherwise throw NullPointerException.

    /** Virtual opcode for disallowed operations.

     */

    int error           = 277;

    /** All conditional jumps come in pairs. To streamline the

     *  treatment of jumps, we also introduce a negation of an

     *  unconditional jump. That opcode happens to be jsr.

     */

    int dontgoto        = jsr;

    /** Shift and mask constants for shifting prefix instructions.

     *  a pair of instruction codes such as LCMP ; IFEQ is encoded

     *  in Symtab as {@literal (LCMP << preShift) + IFEQ }.

     */

    int preShift        = 9;

    int preMask         = (1 << preShift) - 1;

    /** Type codes.

     */

    int INTcode         = 0,

        LONGcode        = 1,

        FLOATcode       = 2,

        DOUBLEcode      = 3,

        OBJECTcode      = 4,

        BYTEcode        = 5,

        CHARcode        = 6,

        SHORTcode       = 7,

        VOIDcode        = 8,

        TypeCodeCount   = 9;

    static final String[] typecodeNames = {

        "int",

        "long",

        "float",

        "double",

        "object",

        "byte",

        "char",

        "short",

        "void",

        "oops"

    };

}