Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/asm/sparc/SPARCRegister.java @ 1602:136b78722a08
6939203: JSR 292 needs method handle constants
Summary: Add new CP types CONSTANT_MethodHandle, CONSTANT_MethodType; extend 'ldc' bytecode.
Reviewed-by: twisti, never
author | jrose |
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date | Wed, 09 Jun 2010 18:50:45 -0700 |
parents | c18cbe5936b8 |
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rev | line source |
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0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2000, 2002, Oracle and/or its affiliates. All rights reserved. |
0 | 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. | |
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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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.asm.sparc; | |
26 | |
27 import sun.jvm.hotspot.asm.*; | |
28 import sun.jvm.hotspot.runtime.*; | |
29 import sun.jvm.hotspot.utilities.*; | |
30 | |
31 public class SPARCRegister extends Register { | |
32 private static final int nofRegisters = 32; // total number of registers | |
33 | |
34 private static final int GLOBAL_BASE = 0; | |
35 private static final int OUT_BASE = 8; | |
36 private static final int LOCAL_BASE = 16; | |
37 private static final int IN_BASE = 24; | |
38 | |
39 private static final int LOCAL_SP_WORD_OFFSET = 0; | |
40 private static final int IN_SP_WORD_OFFSET = 8; | |
41 | |
42 /** Constructor for an explicitly numbered register */ | |
43 public SPARCRegister(int number) { | |
44 super(number); | |
45 } | |
46 | |
47 /** Constructor for an I, G, O, or L register */ | |
48 public SPARCRegister(SPARCRegisterType type, int number) { | |
49 if (type == SPARCRegisterType.GLOBAL) { | |
50 this.number = number + GLOBAL_BASE; | |
51 } else if (type == SPARCRegisterType.OUT) { | |
52 this.number = number + OUT_BASE; | |
53 } else if (type == SPARCRegisterType.LOCAL) { | |
54 this.number = number + LOCAL_BASE; | |
55 } else if (type == SPARCRegisterType.IN) { | |
56 this.number = number + IN_BASE; | |
57 } else { | |
58 throw new IllegalArgumentException("Invalid SPARC register type"); | |
59 } | |
60 } | |
61 | |
62 public int getNumberOfRegisters() { | |
63 return nofRegisters; | |
64 } | |
65 | |
66 public boolean isIn() { | |
67 return (IN_BASE <= getNumber()); | |
68 } | |
69 | |
70 public boolean isLocal() { | |
71 return (LOCAL_BASE <= getNumber() && getNumber() < IN_BASE); | |
72 } | |
73 | |
74 public boolean isOut() { | |
75 return (OUT_BASE <= getNumber() && getNumber() < LOCAL_BASE); | |
76 } | |
77 | |
78 public boolean isGlobal() { | |
79 return (GLOBAL_BASE <= getNumber() && getNumber() < OUT_BASE); | |
80 } | |
81 | |
82 public SPARCRegister afterSave() { | |
83 if (Assert.ASSERTS_ENABLED) { | |
84 Assert.that(isOut() || isGlobal(), "register not visible after save"); | |
85 } | |
86 return isOut() ? new SPARCRegister(getNumber() + (IN_BASE - OUT_BASE)) : this; | |
87 } | |
88 | |
89 public SPARCRegister afterRestore() { | |
90 if (Assert.ASSERTS_ENABLED) { | |
91 Assert.that(isIn() || isGlobal(), "register not visible after save"); | |
92 } | |
93 return isIn() ? new SPARCRegister(getNumber() + (OUT_BASE - IN_BASE)) : this; | |
94 } | |
95 | |
96 /** NOTE: this returns an offset in BYTES in this system! */ | |
97 public long spOffsetInSavedWindow() { | |
98 if (isIn()) { | |
99 return VM.getVM().getAddressSize() * (getNumber() - IN_BASE + IN_SP_WORD_OFFSET); | |
100 } else if (isLocal()) { | |
101 return VM.getVM().getAddressSize() * (getNumber() - LOCAL_BASE + LOCAL_SP_WORD_OFFSET); | |
102 } | |
103 if (Assert.ASSERTS_ENABLED) { | |
104 Assert.that(isIn() || isLocal(), "only ins and locals are saved in my frame"); | |
105 } | |
106 return 0; | |
107 } | |
108 | |
109 public String toString() { | |
110 return SPARCRegisters.getRegisterName(number); | |
111 } | |
112 | |
113 public boolean isFramePointer() { | |
114 return number == 30; // is I6? | |
115 } | |
116 | |
117 public boolean isStackPointer() { | |
118 return number == 14; // is O6? | |
119 } | |
120 | |
121 public boolean isFloat() { | |
122 return false; | |
123 } | |
124 | |
125 public boolean isV9Only() { | |
126 return false; | |
127 } | |
128 } |