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/*
* Copyright (c) 2012, 2018, 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 vm.compiler.coverage.parentheses.share;
import java.util.Arrays;
import java.util.List;
public enum Instruction {
//"+1": instructions that increase stack
ICONST_M1(2),
ICONST_0(3),
ICONST_1(4),
ICONST_2(5),
ICONST_3(6),
ICONST_4(7),
ICONST_5(8),
DUP(89),
///"-1": instructions that decrease stack
IADD(96),
ISUB(100),
IMUL(104),
IAND(126),
IOR(128),
IXOR(130),
ISHL(120),
ISHR(122),
//"0": instructions that doesn't change stack
SWAP(95),
INEG(116),
NOP(0);
public static final List<Instruction> stackUp = Arrays.asList(
ICONST_M1, ICONST_0, ICONST_1, ICONST_2,
ICONST_3, ICONST_4, ICONST_5, DUP
);
public static final List<Instruction> stackDown = Arrays.asList(
IADD, ISUB, IMUL, IAND,
IOR, IXOR, ISHL, ISHR
);
public static final List<Instruction> neutral = Arrays.asList(SWAP, INEG, NOP);
public final int opCode;
Instruction(int opCode) {
this.opCode = opCode;
}
}
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