0
|
1 /*
|
|
2 * Copyright 2002 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.sparc;
|
|
26
|
|
27 import sun.jvm.hotspot.asm.Register;
|
|
28 import sun.jvm.hotspot.utilities.Assert;
|
|
29
|
|
30 public class SPARCFloatRegister extends SPARCRegister {
|
|
31
|
|
32 public SPARCFloatRegister(int number) {
|
|
33 super(number);
|
|
34 }
|
|
35
|
|
36 public int getNumber() {
|
|
37 return number;
|
|
38 }
|
|
39
|
|
40 public static final int SINGLE_PRECISION = 1;
|
|
41 public static final int DOUBLE_PRECISION = 2;
|
|
42 public static final int QUAD_PRECISION = 3;
|
|
43
|
|
44 public int getNumber(int width) {
|
|
45 switch (width) {
|
|
46 case SINGLE_PRECISION:
|
|
47 Assert.that(number < 32, "bad single-prec fp register");
|
|
48 return number;
|
|
49
|
|
50 case DOUBLE_PRECISION:
|
|
51 Assert.that(number < 64 && (number & 1) == 0, "bad double-prec fp register");
|
|
52 return number & 0x1e | (number & 0x20) >> 5;
|
|
53
|
|
54 case QUAD_PRECISION:
|
|
55 Assert.that(number < 64 && (number & 3) == 0, "bad quad-prec fp register");
|
|
56 return number & 0x1c | (number & 0x20) >> 5;
|
|
57 }
|
|
58 throw new RuntimeException("Invalid floating point width supplied");
|
|
59 }
|
|
60
|
|
61 private static final int nofRegisters = 63;
|
|
62 public int getNumberOfRegisters() {
|
|
63 return nofRegisters;
|
|
64 }
|
|
65
|
|
66 public boolean isFloat() {
|
|
67 return true;
|
|
68 }
|
|
69
|
|
70 public boolean isFramePointer() {
|
|
71 return false;
|
|
72 }
|
|
73
|
|
74 public boolean isStackPointer() {
|
|
75 return false;
|
|
76 }
|
|
77
|
|
78 public boolean isV9Only() {
|
|
79 return number > 31;
|
|
80 }
|
|
81
|
|
82 public boolean isValid() {
|
|
83 return number >= 0 && number < nofRegisters;
|
|
84 }
|
|
85
|
|
86 public String toString() {
|
|
87 return SPARCFloatRegisters.getRegisterName(number);
|
|
88 }
|
|
89
|
|
90 }
|