Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/compiler/OopMapValue.java @ 2426:1d1603768966
7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass
Summary: Update the copyright to be 2010 on all changed files in OpenJDK
Reviewed-by: ohair
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date | Tue, 05 Apr 2011 14:12:31 -0700 |
parents | c18cbe5936b8 |
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0 | 1 /* |
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2 * Copyright (c) 2000, 2008, 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. | |
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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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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.compiler; | |
26 | |
27 import java.util.*; | |
28 | |
29 import sun.jvm.hotspot.code.*; | |
30 import sun.jvm.hotspot.runtime.*; | |
31 import sun.jvm.hotspot.types.*; | |
32 import sun.jvm.hotspot.utilities.*; | |
33 | |
34 public class OopMapValue { | |
35 private short value; | |
36 private short contentReg; | |
37 | |
38 /** Read from target VM; located in compiler/oopMap.hpp */ | |
39 // How bits are organized | |
40 static int TYPE_BITS; | |
41 static int REGISTER_BITS; | |
42 static int TYPE_SHIFT; | |
43 static int REGISTER_SHIFT; | |
44 static int TYPE_MASK; | |
45 static int TYPE_MASK_IN_PLACE; | |
46 static int REGISTER_MASK; | |
47 static int REGISTER_MASK_IN_PLACE; | |
48 | |
49 // Types of OopValues | |
50 static int UNUSED_VALUE; | |
51 static int OOP_VALUE; | |
52 static int VALUE_VALUE; | |
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53 static int NARROWOOP_VALUE; |
0 | 54 static int CALLEE_SAVED_VALUE; |
55 static int DERIVED_OOP_VALUE; | |
56 | |
57 static { | |
58 VM.registerVMInitializedObserver(new Observer() { | |
59 public void update(Observable o, Object data) { | |
60 initialize(VM.getVM().getTypeDataBase()); | |
61 } | |
62 }); | |
63 } | |
64 | |
65 private static void initialize(TypeDataBase db) { | |
66 TYPE_BITS = db.lookupIntConstant("OopMapValue::type_bits").intValue(); | |
67 REGISTER_BITS = db.lookupIntConstant("OopMapValue::register_bits").intValue(); | |
68 TYPE_SHIFT = db.lookupIntConstant("OopMapValue::type_shift").intValue(); | |
69 REGISTER_SHIFT = db.lookupIntConstant("OopMapValue::register_shift").intValue(); | |
70 TYPE_MASK = db.lookupIntConstant("OopMapValue::type_mask").intValue(); | |
71 TYPE_MASK_IN_PLACE = db.lookupIntConstant("OopMapValue::type_mask_in_place").intValue(); | |
72 REGISTER_MASK = db.lookupIntConstant("OopMapValue::register_mask").intValue(); | |
73 REGISTER_MASK_IN_PLACE = db.lookupIntConstant("OopMapValue::register_mask_in_place").intValue(); | |
74 UNUSED_VALUE = db.lookupIntConstant("OopMapValue::unused_value").intValue(); | |
75 OOP_VALUE = db.lookupIntConstant("OopMapValue::oop_value").intValue(); | |
76 VALUE_VALUE = db.lookupIntConstant("OopMapValue::value_value").intValue(); | |
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77 NARROWOOP_VALUE = db.lookupIntConstant("OopMapValue::narrowoop_value").intValue(); |
0 | 78 CALLEE_SAVED_VALUE = db.lookupIntConstant("OopMapValue::callee_saved_value").intValue(); |
79 DERIVED_OOP_VALUE = db.lookupIntConstant("OopMapValue::derived_oop_value").intValue(); | |
80 } | |
81 | |
82 public static abstract class OopTypes { | |
83 public static final OopTypes UNUSED_VALUE = new OopTypes() { int getValue() { return OopMapValue.UNUSED_VALUE; }}; | |
84 public static final OopTypes OOP_VALUE = new OopTypes() { int getValue() { return OopMapValue.OOP_VALUE; }}; | |
85 public static final OopTypes VALUE_VALUE = new OopTypes() { int getValue() { return OopMapValue.VALUE_VALUE; }}; | |
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86 public static final OopTypes NARROWOOP_VALUE = new OopTypes() { int getValue() { return OopMapValue.NARROWOOP_VALUE; }}; |
0 | 87 public static final OopTypes CALLEE_SAVED_VALUE = new OopTypes() { int getValue() { return OopMapValue.CALLEE_SAVED_VALUE; }}; |
88 public static final OopTypes DERIVED_OOP_VALUE = new OopTypes() { int getValue() { return OopMapValue.DERIVED_OOP_VALUE; }}; | |
89 | |
90 abstract int getValue(); | |
91 protected OopTypes() {} | |
92 } | |
93 | |
94 public OopMapValue() { setValue((short) 0); setContentReg(new VMReg(0)); } | |
95 public OopMapValue(VMReg reg, OopTypes t) { setReg(reg); setType(t); } | |
96 public OopMapValue(VMReg reg, OopTypes t, VMReg reg2) { setReg(reg); setType(t); setContentReg(reg2); } | |
97 public OopMapValue(CompressedReadStream stream) { readFrom(stream); } | |
98 | |
99 public void readFrom(CompressedReadStream stream) { | |
100 setValue((short) stream.readInt()); | |
101 if (isCalleeSaved() || isDerivedOop()) { | |
102 setContentReg(new VMReg(stream.readInt())); | |
103 } | |
104 } | |
105 | |
106 // Querying | |
107 public boolean isOop() { return (getValue() & TYPE_MASK_IN_PLACE) == OOP_VALUE; } | |
108 public boolean isValue() { return (getValue() & TYPE_MASK_IN_PLACE) == VALUE_VALUE; } | |
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109 public boolean isNarrowOop() { return (getValue() & TYPE_MASK_IN_PLACE) == NARROWOOP_VALUE; } |
0 | 110 public boolean isCalleeSaved() { return (getValue() & TYPE_MASK_IN_PLACE) == CALLEE_SAVED_VALUE; } |
111 public boolean isDerivedOop() { return (getValue() & TYPE_MASK_IN_PLACE) == DERIVED_OOP_VALUE; } | |
112 | |
113 public VMReg getReg() { return new VMReg((getValue() & REGISTER_MASK_IN_PLACE) >> REGISTER_SHIFT); } | |
114 public void setReg(VMReg r) { setValue((short) (r.getValue() << REGISTER_SHIFT | (getValue() & TYPE_MASK_IN_PLACE))); } | |
115 | |
116 public OopTypes getType() { | |
117 int which = (getValue() & TYPE_MASK_IN_PLACE); | |
118 if (which == UNUSED_VALUE) return OopTypes.UNUSED_VALUE; | |
119 else if (which == OOP_VALUE) return OopTypes.OOP_VALUE; | |
120 else if (which == VALUE_VALUE) return OopTypes.VALUE_VALUE; | |
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121 else if (which == NARROWOOP_VALUE) return OopTypes.NARROWOOP_VALUE; |
0 | 122 else if (which == CALLEE_SAVED_VALUE) return OopTypes.CALLEE_SAVED_VALUE; |
123 else if (which == DERIVED_OOP_VALUE) return OopTypes.DERIVED_OOP_VALUE; | |
124 else throw new InternalError("unknown which " + which + " (TYPE_MASK_IN_PLACE = " + TYPE_MASK_IN_PLACE + ")"); | |
125 } | |
126 public void setType(OopTypes t) { setValue((short) ((getValue() & REGISTER_MASK_IN_PLACE) | t.getValue())); } | |
127 | |
128 public VMReg getContentReg() { return new VMReg(contentReg); } | |
129 public void setContentReg(VMReg r) { contentReg = (short) r.getValue(); } | |
130 | |
131 /** Physical location queries */ | |
132 public boolean isRegisterLoc() { return (getReg().lessThan(VM.getVM().getVMRegImplInfo().getStack0())); } | |
133 public boolean isStackLoc() { return (getReg().greaterThanOrEqual(VM.getVM().getVMRegImplInfo().getStack0())); } | |
134 | |
135 /** Returns offset from sp. */ | |
136 public int getStackOffset() { | |
137 if (Assert.ASSERTS_ENABLED) { | |
138 Assert.that(isStackLoc(), "must be stack location"); | |
139 } | |
140 return getReg().minus(VM.getVM().getVMRegImplInfo().getStack0()); | |
141 } | |
142 | |
143 //-------------------------------------------------------------------------------- | |
144 // Internals only below this point | |
145 // | |
146 | |
147 private void setValue(short value) { | |
148 this.value = value; | |
149 } | |
150 | |
151 private int getValue() { | |
152 return value; | |
153 } | |
154 } |