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comparison agent/src/share/classes/sun/jvm/hotspot/asm/x86/X86ShiftInstruction.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children c18cbe5936b8
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2003 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 package sun.jvm.hotspot.asm.x86;
26
27 import sun.jvm.hotspot.asm.*;
28
29 public class X86ShiftInstruction extends X86Instruction implements ShiftInstruction {
30 final private int operation;
31 final private Operand operand1;
32 final private ImmediateOrRegister operand2;
33
34 public X86ShiftInstruction(String name, int operation, Operand operand1, ImmediateOrRegister operand2, int size, int prefixes) {
35 super(name, size, prefixes);
36 this.operand1 = operand1;
37 this.operand2 = operand2;
38 this.operation = operation;
39 }
40
41 public String asString(long currentPc, SymbolFinder symFinder) {
42 StringBuffer buf = new StringBuffer();
43 buf.append(getPrefixString());
44 buf.append(getName());
45 buf.append(spaces);
46 buf.append(getOperandAsString(operand1));
47
48 if(operand2 != null) {
49 buf.append(comma);
50
51 if ((operand2 instanceof Register)) {
52 buf.append(operand2.toString());
53 }
54 else {
55 Number number = ((Immediate)operand2).getNumber();
56 buf.append("0x");
57 buf.append(Integer.toHexString(number.intValue()));
58 }
59 }
60 return buf.toString();
61 }
62
63 public int getOperation() {
64 return operation;
65 }
66
67 public Operand getShiftDestination() {
68 return operand1;
69 }
70
71 public Operand getShiftLength() {
72 return operand2;
73 }
74
75 public Operand getShiftSource() {
76 return operand1;
77 }
78
79 public boolean isShift() {
80 return true;
81 }
82
83 protected String getOperand2String() {
84 return operand2.toString();
85 }
86 }