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