jjg@255: /*
vromero@1428:  * Copyright (c) 2009, 2012, Oracle and/or its affiliates. All rights reserved.
jjg@255:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
jjg@255:  *
jjg@255:  * This code is free software; you can redistribute it and/or modify it
jjg@255:  * under the terms of the GNU General Public License version 2 only, as
ohair@554:  * published by the Free Software Foundation.  Oracle designates this
jjg@255:  * particular file as subject to the "Classpath" exception as provided
ohair@554:  * by Oracle in the LICENSE file that accompanied this code.
jjg@255:  *
jjg@255:  * This code is distributed in the hope that it will be useful, but WITHOUT
jjg@255:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
jjg@255:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
jjg@255:  * version 2 for more details (a copy is included in the LICENSE file that
jjg@255:  * accompanied this code).
jjg@255:  *
jjg@255:  * You should have received a copy of the GNU General Public License version
jjg@255:  * 2 along with this work; if not, write to the Free Software Foundation,
jjg@255:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
jjg@255:  *
ohair@554:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@554:  * or visit www.oracle.com if you need additional information or have any
ohair@554:  * questions.
jjg@255:  */
jjg@255: 
jjg@255: package com.sun.tools.classfile;
jjg@255: 
jjg@255: import static com.sun.tools.classfile.Instruction.Kind.*;
jjg@255: import static com.sun.tools.classfile.Opcode.Set.*;
jjg@255: 
jjg@255: /**
jjh@972:  * See JVMS, chapter 6.
jjg@255:  *
jjg@255:  * <p>In addition to providing all the standard opcodes defined in JVMS,
jjg@255:  * this class also provides legacy support for the PicoJava extensions.
jjg@255:  *
jjg@581:  *  <p><b>This is NOT part of any supported API.
jjg@581:  *  If you write code that depends on this, you do so at your own risk.
jjg@255:  *  This code and its internal interfaces are subject to change or
jjg@255:  *  deletion without notice.</b>
jjg@255:  */
jjg@255: public enum Opcode {
jjg@255:     NOP(0x0),
jjg@255:     ACONST_NULL(0x1),
jjg@255:     ICONST_M1(0x2),
jjg@255:     ICONST_0(0x3),
jjg@255:     ICONST_1(0x4),
jjg@255:     ICONST_2(0x5),
jjg@255:     ICONST_3(0x6),
jjg@255:     ICONST_4(0x7),
jjg@255:     ICONST_5(0x8),
jjg@255:     LCONST_0(0x9),
jjg@255:     LCONST_1(0xa),
jjg@255:     FCONST_0(0xb),
jjg@255:     FCONST_1(0xc),
jjg@255:     FCONST_2(0xd),
jjg@255:     DCONST_0(0xe),
jjg@255:     DCONST_1(0xf),
jjg@255:     BIPUSH(0x10, BYTE),
jjg@255:     SIPUSH(0x11, SHORT),
jjg@255:     LDC(0x12, CPREF),
jjg@255:     LDC_W(0x13, CPREF_W),
jjg@255:     LDC2_W(0x14, CPREF_W),
jjg@255:     ILOAD(0x15, LOCAL),
jjg@255:     LLOAD(0x16, LOCAL),
jjg@255:     FLOAD(0x17, LOCAL),
jjg@255:     DLOAD(0x18, LOCAL),
jjg@255:     ALOAD(0x19, LOCAL),
jjg@255:     ILOAD_0(0x1a),
jjg@255:     ILOAD_1(0x1b),
jjg@255:     ILOAD_2(0x1c),
jjg@255:     ILOAD_3(0x1d),
jjg@255:     LLOAD_0(0x1e),
jjg@255:     LLOAD_1(0x1f),
jjg@255:     LLOAD_2(0x20),
jjg@255:     LLOAD_3(0x21),
jjg@255:     FLOAD_0(0x22),
jjg@255:     FLOAD_1(0x23),
jjg@255:     FLOAD_2(0x24),
jjg@255:     FLOAD_3(0x25),
jjg@255:     DLOAD_0(0x26),
jjg@255:     DLOAD_1(0x27),
jjg@255:     DLOAD_2(0x28),
jjg@255:     DLOAD_3(0x29),
jjg@255:     ALOAD_0(0x2a),
jjg@255:     ALOAD_1(0x2b),
jjg@255:     ALOAD_2(0x2c),
jjg@255:     ALOAD_3(0x2d),
jjg@255:     IALOAD(0x2e),
jjg@255:     LALOAD(0x2f),
jjg@255:     FALOAD(0x30),
jjg@255:     DALOAD(0x31),
jjg@255:     AALOAD(0x32),
jjg@255:     BALOAD(0x33),
jjg@255:     CALOAD(0x34),
jjg@255:     SALOAD(0x35),
jjg@255:     ISTORE(0x36, LOCAL),
jjg@255:     LSTORE(0x37, LOCAL),
jjg@255:     FSTORE(0x38, LOCAL),
jjg@255:     DSTORE(0x39, LOCAL),
jjg@255:     ASTORE(0x3a, LOCAL),
jjg@255:     ISTORE_0(0x3b),
jjg@255:     ISTORE_1(0x3c),
jjg@255:     ISTORE_2(0x3d),
jjg@255:     ISTORE_3(0x3e),
jjg@255:     LSTORE_0(0x3f),
jjg@255:     LSTORE_1(0x40),
jjg@255:     LSTORE_2(0x41),
jjg@255:     LSTORE_3(0x42),
jjg@255:     FSTORE_0(0x43),
jjg@255:     FSTORE_1(0x44),
jjg@255:     FSTORE_2(0x45),
jjg@255:     FSTORE_3(0x46),
jjg@255:     DSTORE_0(0x47),
jjg@255:     DSTORE_1(0x48),
jjg@255:     DSTORE_2(0x49),
jjg@255:     DSTORE_3(0x4a),
jjg@255:     ASTORE_0(0x4b),
jjg@255:     ASTORE_1(0x4c),
jjg@255:     ASTORE_2(0x4d),
jjg@255:     ASTORE_3(0x4e),
jjg@255:     IASTORE(0x4f),
jjg@255:     LASTORE(0x50),
jjg@255:     FASTORE(0x51),
jjg@255:     DASTORE(0x52),
jjg@255:     AASTORE(0x53),
jjg@255:     BASTORE(0x54),
jjg@255:     CASTORE(0x55),
jjg@255:     SASTORE(0x56),
jjg@255:     POP(0x57),
jjg@255:     POP2(0x58),
jjg@255:     DUP(0x59),
jjg@255:     DUP_X1(0x5a),
jjg@255:     DUP_X2(0x5b),
jjg@255:     DUP2(0x5c),
jjg@255:     DUP2_X1(0x5d),
jjg@255:     DUP2_X2(0x5e),
jjg@255:     SWAP(0x5f),
jjg@255:     IADD(0x60),
jjg@255:     LADD(0x61),
jjg@255:     FADD(0x62),
jjg@255:     DADD(0x63),
jjg@255:     ISUB(0x64),
jjg@255:     LSUB(0x65),
jjg@255:     FSUB(0x66),
jjg@255:     DSUB(0x67),
jjg@255:     IMUL(0x68),
jjg@255:     LMUL(0x69),
jjg@255:     FMUL(0x6a),
jjg@255:     DMUL(0x6b),
jjg@255:     IDIV(0x6c),
jjg@255:     LDIV(0x6d),
jjg@255:     FDIV(0x6e),
jjg@255:     DDIV(0x6f),
jjg@255:     IREM(0x70),
jjg@255:     LREM(0x71),
jjg@255:     FREM(0x72),
jjg@255:     DREM(0x73),
jjg@255:     INEG(0x74),
jjg@255:     LNEG(0x75),
jjg@255:     FNEG(0x76),
jjg@255:     DNEG(0x77),
jjg@255:     ISHL(0x78),
jjg@255:     LSHL(0x79),
jjg@255:     ISHR(0x7a),
jjg@255:     LSHR(0x7b),
jjg@255:     IUSHR(0x7c),
jjg@255:     LUSHR(0x7d),
jjg@255:     IAND(0x7e),
jjg@255:     LAND(0x7f),
jjg@255:     IOR(0x80),
jjg@255:     LOR(0x81),
jjg@255:     IXOR(0x82),
jjg@255:     LXOR(0x83),
jjg@255:     IINC(0x84, LOCAL_BYTE),
jjg@255:     I2L(0x85),
jjg@255:     I2F(0x86),
jjg@255:     I2D(0x87),
jjg@255:     L2I(0x88),
jjg@255:     L2F(0x89),
jjg@255:     L2D(0x8a),
jjg@255:     F2I(0x8b),
jjg@255:     F2L(0x8c),
jjg@255:     F2D(0x8d),
jjg@255:     D2I(0x8e),
jjg@255:     D2L(0x8f),
jjg@255:     D2F(0x90),
jjg@255:     I2B(0x91),
jjg@255:     I2C(0x92),
jjg@255:     I2S(0x93),
jjg@255:     LCMP(0x94),
jjg@255:     FCMPL(0x95),
jjg@255:     FCMPG(0x96),
jjg@255:     DCMPL(0x97),
jjg@255:     DCMPG(0x98),
jjg@255:     IFEQ(0x99, BRANCH),
jjg@255:     IFNE(0x9a, BRANCH),
jjg@255:     IFLT(0x9b, BRANCH),
jjg@255:     IFGE(0x9c, BRANCH),
jjg@255:     IFGT(0x9d, BRANCH),
jjg@255:     IFLE(0x9e, BRANCH),
jjg@255:     IF_ICMPEQ(0x9f, BRANCH),
jjg@255:     IF_ICMPNE(0xa0, BRANCH),
jjg@255:     IF_ICMPLT(0xa1, BRANCH),
jjg@255:     IF_ICMPGE(0xa2, BRANCH),
jjg@255:     IF_ICMPGT(0xa3, BRANCH),
jjg@255:     IF_ICMPLE(0xa4, BRANCH),
jjg@255:     IF_ACMPEQ(0xa5, BRANCH),
jjg@255:     IF_ACMPNE(0xa6, BRANCH),
jjg@255:     GOTO(0xa7, BRANCH),
jjg@255:     JSR(0xa8, BRANCH),
jjg@255:     RET(0xa9, LOCAL),
jjg@255:     TABLESWITCH(0xaa, DYNAMIC),
jjg@255:     LOOKUPSWITCH(0xab, DYNAMIC),
jjg@255:     IRETURN(0xac),
jjg@255:     LRETURN(0xad),
jjg@255:     FRETURN(0xae),
jjg@255:     DRETURN(0xaf),
jjg@255:     ARETURN(0xb0),
jjg@255:     RETURN(0xb1),
jjg@255:     GETSTATIC(0xb2, CPREF_W),
jjg@255:     PUTSTATIC(0xb3, CPREF_W),
jjg@255:     GETFIELD(0xb4, CPREF_W),
jjg@255:     PUTFIELD(0xb5, CPREF_W),
jjg@255:     INVOKEVIRTUAL(0xb6, CPREF_W),
jjg@255:     INVOKESPECIAL(0xb7, CPREF_W),
jjg@255:     INVOKESTATIC(0xb8, CPREF_W),
jjg@255:     INVOKEINTERFACE(0xb9, CPREF_W_UBYTE_ZERO),
jrose@267:     INVOKEDYNAMIC(0xba, CPREF_W_UBYTE_ZERO),
jjg@255:     NEW(0xbb, CPREF_W),
jjg@255:     NEWARRAY(0xbc, ATYPE),
jjg@255:     ANEWARRAY(0xbd, CPREF_W),
jjg@255:     ARRAYLENGTH(0xbe),
jjg@255:     ATHROW(0xbf),
jjg@255:     CHECKCAST(0xc0, CPREF_W),
jjg@255:     INSTANCEOF(0xc1, CPREF_W),
jjg@255:     MONITORENTER(0xc2),
jjg@255:     MONITOREXIT(0xc3),
jjg@255:     // wide 0xc4
jjg@255:     MULTIANEWARRAY(0xc5, CPREF_W_UBYTE),
jjg@255:     IFNULL(0xc6, BRANCH),
jjg@255:     IFNONNULL(0xc7, BRANCH),
jjg@255:     GOTO_W(0xc8, BRANCH_W),
jjg@255:     JSR_W(0xc9, BRANCH_W),
jjg@255:     // impdep 0xfe: PicoJava nonpriv
jjg@255:     // impdep 0xff: Picojava priv
jjg@255: 
jjg@255:     // wide opcodes
vromero@1428:     ILOAD_W(0xc415, WIDE_LOCAL),
vromero@1428:     LLOAD_W(0xc416, WIDE_LOCAL),
vromero@1428:     FLOAD_W(0xc417, WIDE_LOCAL),
vromero@1428:     DLOAD_W(0xc418, WIDE_LOCAL),
vromero@1428:     ALOAD_W(0xc419, WIDE_LOCAL),
vromero@1428:     ISTORE_W(0xc436, WIDE_LOCAL),
vromero@1428:     LSTORE_W(0xc437, WIDE_LOCAL),
vromero@1428:     FSTORE_W(0xc438, WIDE_LOCAL),
vromero@1428:     DSTORE_W(0xc439, WIDE_LOCAL),
vromero@1428:     ASTORE_W(0xc43a, WIDE_LOCAL),
vromero@1428:     IINC_W(0xc484, WIDE_LOCAL_SHORT),
vromero@1428:     RET_W(0xc4a9, WIDE_LOCAL),
jjg@255: 
jjg@255:     // PicoJava nonpriv instructions
jjg@255:     LOAD_UBYTE(PICOJAVA, 0xfe00),
jjg@255:     LOAD_BYTE(PICOJAVA, 0xfe01),
jjg@255:     LOAD_CHAR(PICOJAVA, 0xfe02),
jjg@255:     LOAD_SHORT(PICOJAVA, 0xfe03),
jjg@255:     LOAD_WORD(PICOJAVA, 0xfe04),
jjg@255:     RET_FROM_SUB(PICOJAVA, 0xfe05),
jjg@255:     LOAD_CHAR_OE(PICOJAVA, 0xfe0a),
jjg@255:     LOAD_SHORT_OE(PICOJAVA, 0xfe0b),
jjg@255:     LOAD_WORD_OE(PICOJAVA, 0xfe0c),
jjg@255:     NCLOAD_UBYTE(PICOJAVA, 0xfe10),
jjg@255:     NCLOAD_BYTE(PICOJAVA, 0xfe11),
jjg@255:     NCLOAD_CHAR(PICOJAVA, 0xfe12),
jjg@255:     NCLOAD_SHORT(PICOJAVA, 0xfe13),
jjg@255:     NCLOAD_WORD(PICOJAVA, 0xfe14),
jjg@255:     NCLOAD_CHAR_OE(PICOJAVA, 0xfe1a),
jjg@255:     NCLOAD_SHORT_OE(PICOJAVA, 0xfe1b),
jjg@255:     NCLOAD_WORD_OE(PICOJAVA, 0xfe1c),
jjg@255:     CACHE_FLUSH(PICOJAVA, 0xfe1e),
jjg@255:     STORE_BYTE(PICOJAVA, 0xfe20),
jjg@255:     STORE_SHORT(PICOJAVA, 0xfe22),
jjg@255:     STORE_WORD(PICOJAVA, 0xfe24),
jjg@255:     STORE_SHORT_OE(PICOJAVA, 0xfe2a),
jjg@255:     STORE_WORD_OE(PICOJAVA, 0xfe2c),
jjg@255:     NCSTORE_BYTE(PICOJAVA, 0xfe30),
jjg@255:     NCSTORE_SHORT(PICOJAVA, 0xfe32),
jjg@255:     NCSTORE_WORD(PICOJAVA, 0xfe34),
jjg@255:     NCSTORE_SHORT_OE(PICOJAVA, 0xfe3a),
jjg@255:     NCSTORE_WORD_OE(PICOJAVA, 0xfe3c),
jjg@255:     ZERO_LINE(PICOJAVA, 0xfe3e),
jjg@255:     ENTER_SYNC_METHOD(PICOJAVA, 0xfe3f),
jjg@255: 
jjg@255:     // PicoJava priv instructions
jjg@255:     PRIV_LOAD_UBYTE(PICOJAVA, 0xff00),
jjg@255:     PRIV_LOAD_BYTE(PICOJAVA, 0xff01),
jjg@255:     PRIV_LOAD_CHAR(PICOJAVA, 0xff02),
jjg@255:     PRIV_LOAD_SHORT(PICOJAVA, 0xff03),
jjg@255:     PRIV_LOAD_WORD(PICOJAVA, 0xff04),
jjg@255:     PRIV_RET_FROM_TRAP(PICOJAVA, 0xff05),
jjg@255:     PRIV_READ_DCACHE_TAG(PICOJAVA, 0xff06),
jjg@255:     PRIV_READ_DCACHE_DATA(PICOJAVA, 0xff07),
jjg@255:     PRIV_LOAD_CHAR_OE(PICOJAVA, 0xff0a),
jjg@255:     PRIV_LOAD_SHORT_OE(PICOJAVA, 0xff0b),
jjg@255:     PRIV_LOAD_WORD_OE(PICOJAVA, 0xff0c),
jjg@255:     PRIV_READ_ICACHE_TAG(PICOJAVA, 0xff0e),
jjg@255:     PRIV_READ_ICACHE_DATA(PICOJAVA, 0xff0f),
jjg@255:     PRIV_NCLOAD_UBYTE(PICOJAVA, 0xff10),
jjg@255:     PRIV_NCLOAD_BYTE(PICOJAVA, 0xff11),
jjg@255:     PRIV_NCLOAD_CHAR(PICOJAVA, 0xff12),
jjg@255:     PRIV_NCLOAD_SHORT(PICOJAVA, 0xff13),
jjg@255:     PRIV_NCLOAD_WORD(PICOJAVA, 0xff14),
jjg@255:     PRIV_POWERDOWN(PICOJAVA, 0xff16),
jjg@255:     PRIV_READ_SCACHE_DATA(PICOJAVA, 0xff17),
jjg@255:     PRIV_NCLOAD_CHAR_OE(PICOJAVA, 0xff1a),
jjg@255:     PRIV_NCLOAD_SHORT_OE(PICOJAVA, 0xff1b),
jjg@255:     PRIV_NCLOAD_WORD_OE(PICOJAVA, 0xff1c),
jjg@255:     PRIV_CACHE_FLUSH(PICOJAVA, 0xff1e),
jjg@255:     PRIV_CACHE_INDEX_FLUSH(PICOJAVA, 0xff1f),
jjg@255:     PRIV_STORE_BYTE(PICOJAVA, 0xff20),
jjg@255:     PRIV_STORE_SHORT(PICOJAVA, 0xff22),
jjg@255:     PRIV_STORE_WORD(PICOJAVA, 0xff24),
jjg@255:     PRIV_WRITE_DCACHE_TAG(PICOJAVA, 0xff26),
jjg@255:     PRIV_WRITE_DCACHE_DATA(PICOJAVA, 0xff27),
jjg@255:     PRIV_STORE_SHORT_OE(PICOJAVA, 0xff2a),
jjg@255:     PRIV_STORE_WORD_OE(PICOJAVA, 0xff2c),
jjg@255:     PRIV_WRITE_ICACHE_TAG(PICOJAVA, 0xff2e),
jjg@255:     PRIV_WRITE_ICACHE_DATA(PICOJAVA, 0xff2f),
jjg@255:     PRIV_NCSTORE_BYTE(PICOJAVA, 0xff30),
jjg@255:     PRIV_NCSTORE_SHORT(PICOJAVA, 0xff32),
jjg@255:     PRIV_NCSTORE_WORD(PICOJAVA, 0xff34),
jjg@255:     PRIV_RESET(PICOJAVA, 0xff36),
jjg@255:     PRIV_WRITE_SCACHE_DATA(PICOJAVA, 0xff37),
jjg@255:     PRIV_NCSTORE_SHORT_OE(PICOJAVA, 0xff3a),
jjg@255:     PRIV_NCSTORE_WORD_OE(PICOJAVA, 0xff3c),
jjg@255:     PRIV_ZERO_LINE(PICOJAVA, 0xff3e),
jjg@255:     PRIV_READ_REG_0(PICOJAVA, 0xff40),
jjg@255:     PRIV_READ_REG_1(PICOJAVA, 0xff41),
jjg@255:     PRIV_READ_REG_2(PICOJAVA, 0xff42),
jjg@255:     PRIV_READ_REG_3(PICOJAVA, 0xff43),
jjg@255:     PRIV_READ_REG_4(PICOJAVA, 0xff44),
jjg@255:     PRIV_READ_REG_5(PICOJAVA, 0xff45),
jjg@255:     PRIV_READ_REG_6(PICOJAVA, 0xff46),
jjg@255:     PRIV_READ_REG_7(PICOJAVA, 0xff47),
jjg@255:     PRIV_READ_REG_8(PICOJAVA, 0xff48),
jjg@255:     PRIV_READ_REG_9(PICOJAVA, 0xff49),
jjg@255:     PRIV_READ_REG_10(PICOJAVA, 0xff4a),
jjg@255:     PRIV_READ_REG_11(PICOJAVA, 0xff4b),
jjg@255:     PRIV_READ_REG_12(PICOJAVA, 0xff4c),
jjg@255:     PRIV_READ_REG_13(PICOJAVA, 0xff4d),
jjg@255:     PRIV_READ_REG_14(PICOJAVA, 0xff4e),
jjg@255:     PRIV_READ_REG_15(PICOJAVA, 0xff4f),
jjg@255:     PRIV_READ_REG_16(PICOJAVA, 0xff50),
jjg@255:     PRIV_READ_REG_17(PICOJAVA, 0xff51),
jjg@255:     PRIV_READ_REG_18(PICOJAVA, 0xff52),
jjg@255:     PRIV_READ_REG_19(PICOJAVA, 0xff53),
jjg@255:     PRIV_READ_REG_20(PICOJAVA, 0xff54),
jjg@255:     PRIV_READ_REG_21(PICOJAVA, 0xff55),
jjg@255:     PRIV_READ_REG_22(PICOJAVA, 0xff56),
jjg@255:     PRIV_READ_REG_23(PICOJAVA, 0xff57),
jjg@255:     PRIV_READ_REG_24(PICOJAVA, 0xff58),
jjg@255:     PRIV_READ_REG_25(PICOJAVA, 0xff59),
jjg@255:     PRIV_READ_REG_26(PICOJAVA, 0xff5a),
jjg@255:     PRIV_READ_REG_27(PICOJAVA, 0xff5b),
jjg@255:     PRIV_READ_REG_28(PICOJAVA, 0xff5c),
jjg@255:     PRIV_READ_REG_29(PICOJAVA, 0xff5d),
jjg@255:     PRIV_READ_REG_30(PICOJAVA, 0xff5e),
jjg@255:     PRIV_READ_REG_31(PICOJAVA, 0xff5f),
jjg@255:     PRIV_WRITE_REG_0(PICOJAVA, 0xff60),
jjg@255:     PRIV_WRITE_REG_1(PICOJAVA, 0xff61),
jjg@255:     PRIV_WRITE_REG_2(PICOJAVA, 0xff62),
jjg@255:     PRIV_WRITE_REG_3(PICOJAVA, 0xff63),
jjg@255:     PRIV_WRITE_REG_4(PICOJAVA, 0xff64),
jjg@255:     PRIV_WRITE_REG_5(PICOJAVA, 0xff65),
jjg@255:     PRIV_WRITE_REG_6(PICOJAVA, 0xff66),
jjg@255:     PRIV_WRITE_REG_7(PICOJAVA, 0xff67),
jjg@255:     PRIV_WRITE_REG_8(PICOJAVA, 0xff68),
jjg@255:     PRIV_WRITE_REG_9(PICOJAVA, 0xff69),
jjg@255:     PRIV_WRITE_REG_10(PICOJAVA, 0xff6a),
jjg@255:     PRIV_WRITE_REG_11(PICOJAVA, 0xff6b),
jjg@255:     PRIV_WRITE_REG_12(PICOJAVA, 0xff6c),
jjg@255:     PRIV_WRITE_REG_13(PICOJAVA, 0xff6d),
jjg@255:     PRIV_WRITE_REG_14(PICOJAVA, 0xff6e),
jjg@255:     PRIV_WRITE_REG_15(PICOJAVA, 0xff6f),
jjg@255:     PRIV_WRITE_REG_16(PICOJAVA, 0xff70),
jjg@255:     PRIV_WRITE_REG_17(PICOJAVA, 0xff71),
jjg@255:     PRIV_WRITE_REG_18(PICOJAVA, 0xff72),
jjg@255:     PRIV_WRITE_REG_19(PICOJAVA, 0xff73),
jjg@255:     PRIV_WRITE_REG_20(PICOJAVA, 0xff74),
jjg@255:     PRIV_WRITE_REG_21(PICOJAVA, 0xff75),
jjg@255:     PRIV_WRITE_REG_22(PICOJAVA, 0xff76),
jjg@255:     PRIV_WRITE_REG_23(PICOJAVA, 0xff77),
jjg@255:     PRIV_WRITE_REG_24(PICOJAVA, 0xff78),
jjg@255:     PRIV_WRITE_REG_25(PICOJAVA, 0xff79),
jjg@255:     PRIV_WRITE_REG_26(PICOJAVA, 0xff7a),
jjg@255:     PRIV_WRITE_REG_27(PICOJAVA, 0xff7b),
jjg@255:     PRIV_WRITE_REG_28(PICOJAVA, 0xff7c),
jjg@255:     PRIV_WRITE_REG_29(PICOJAVA, 0xff7d),
jjg@255:     PRIV_WRITE_REG_30(PICOJAVA, 0xff7e),
jjg@255:     PRIV_WRITE_REG_31(PICOJAVA, 0xff7f);
jjg@255: 
jjg@255:     Opcode(int opcode) {
jjg@255:         this(STANDARD, opcode, NO_OPERANDS);
jjg@255:     }
jjg@255: 
jjg@255:     Opcode(int opcode, Instruction.Kind kind) {
jjg@255:         this(STANDARD, opcode, kind);
jjg@255:     }
jjg@255: 
jjg@255:     Opcode(Set set, int opcode) {
jjg@255:         this(set, opcode, (set == STANDARD ? NO_OPERANDS : WIDE_NO_OPERANDS));
jjg@255:     }
jjg@255: 
jjg@255:     Opcode(Set set, int opcode, Instruction.Kind kind) {
jjg@255:         this.set = set;
jjg@255:         this.opcode = opcode;
jjg@255:         this.kind = kind;
jjg@255:     }
jjg@255: 
jjg@255:     public final Set set;
jjg@255:     public final int opcode;
jjg@255:     public final Instruction.Kind kind;
jjg@255: 
jjg@255:     /** Get the Opcode for a simple standard 1-byte opcode. */
jjg@255:     public static Opcode get(int opcode) {
jjg@255:         return stdOpcodes[opcode];
jjg@255:     }
jjg@255: 
jjg@255:     /** Get the Opcode for 1- or 2-byte opcode. */
jjg@255:     public static Opcode get(int opcodePrefix, int opcode) {
jjg@255:         Opcode[] block = getOpcodeBlock(opcodePrefix);
jjg@255:         return (block == null ? null : block[opcode]);
jjg@255:     }
jjg@255: 
jjg@255:     private static Opcode[] getOpcodeBlock(int opcodePrefix) {
jjg@255:         switch (opcodePrefix) {
jjg@255:             case 0:
jjg@255:                 return stdOpcodes;
jjg@255:             case WIDE:
jjg@255:                 return wideOpcodes;
jjg@255:             case NONPRIV:
jjg@255:                 return nonPrivOpcodes;
jjg@255:             case PRIV:
jjg@255:                 return privOpcodes;
jjg@255:             default:
jjg@255:                 return null;
jjg@255:         }
jjg@255: 
jjg@255:     }
jjg@255: 
vromero@1442:     private static final Opcode[] stdOpcodes = new Opcode[256];
vromero@1442:     private static final Opcode[] wideOpcodes = new Opcode[256];
vromero@1442:     private static final Opcode[] nonPrivOpcodes = new Opcode[256];
vromero@1442:     private static final Opcode[] privOpcodes = new Opcode[256];
jjg@255:     static {
jjg@255:         for (Opcode o: values())
jjg@255:             getOpcodeBlock(o.opcode >> 8)[o.opcode & 0xff] = o;
jjg@255:     }
jjg@255: 
jjg@255:     /** The byte prefix for the wide instructions. */
jjg@255:     public static final int WIDE = 0xc4;
jjg@255:     /** The byte prefix for the PicoJava nonpriv instructions. */
jjg@255:     public static final int NONPRIV = 0xfe;
jjg@255:     /** The byte prefix for the PicoJava priv instructions. */
jjg@255:     public static final int PRIV = 0xff;
jjg@255: 
jjg@255:     public enum Set {
jjg@255:         /** Standard opcodes. */
jjg@255:         STANDARD,
jjg@255:         /** Legacy support for PicoJava opcodes. */
jjg@255:         PICOJAVA  };
jjg@255: }