01: /*
02: * Dupx1Command.java Copyright (c) 2006,07 Swaroop Belur
03: *
04: * This program is free software; you can redistribute it and/itor
05: * modify it under the terms of the GNU General Public License
06: * as published by the Free Software Foundation; either version 2
07: * of the License, or (at your option) any later version.
08:
09: * This program is distributed in the hope that it will be useful,
10: * but WITHOUT ANY WARRANTY; without even the implied warranty of
11: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12: * GNU General Public License for more details.
13:
14: * You should have received a copy of the GNU General Public License
15: * along with this program; if not, write to the Free Software
16: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17: *
18: */
19: package net.sf.jdec.jvminstructions.commands;
20:
21: import net.sf.jdec.core.GlobalVariableStore;
22: import net.sf.jdec.core.Operand;
23: import net.sf.jdec.core.OperandStack;
24: import net.sf.jdec.reflection.Behaviour;
25:
26: public class Dupx1Command extends AbstractInstructionCommand {
27:
28: public Dupx1Command(Behaviour context) {
29: super (context);
30:
31: }
32:
33: public int getSkipBytes() {
34: return 0;
35: }
36:
37: public void execute() {
38: OperandStack opStack = getStack();
39: Operand op1 = (Operand) opStack.pop();
40: Operand op2 = (Operand) opStack.pop();
41: opStack.push(op1);
42: opStack.push(op2);
43: opStack.push(op1);
44: if (GlobalVariableStore.isDoNotPop()) {
45: GlobalVariableStore.setDoNotPop(false);
46: }
47: }
48:
49: }
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