author | never |
Wed, 09 Oct 2019 16:35:44 -0700 | |
changeset 58527 | f9cc0141574c |
parent 47216 | 71c04702a3d5 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
5547
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
670
diff
changeset
|
2 |
* Copyright (c) 2000, 2008, Oracle and/or its affiliates. All rights reserved. |
1 | 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 |
* |
|
5547
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
670
diff
changeset
|
19 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
670
diff
changeset
|
20 |
* or visit www.oracle.com if you need additional information or have any |
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
670
diff
changeset
|
21 |
* questions. |
1 | 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 OOP_VALUE; |
|
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
51 |
static int NARROWOOP_VALUE; |
1 | 52 |
static int CALLEE_SAVED_VALUE; |
53 |
static int DERIVED_OOP_VALUE; |
|
54 |
||
55 |
static { |
|
56 |
VM.registerVMInitializedObserver(new Observer() { |
|
57 |
public void update(Observable o, Object data) { |
|
58 |
initialize(VM.getVM().getTypeDataBase()); |
|
59 |
} |
|
60 |
}); |
|
61 |
} |
|
62 |
||
63 |
private static void initialize(TypeDataBase db) { |
|
64 |
TYPE_BITS = db.lookupIntConstant("OopMapValue::type_bits").intValue(); |
|
65 |
REGISTER_BITS = db.lookupIntConstant("OopMapValue::register_bits").intValue(); |
|
66 |
TYPE_SHIFT = db.lookupIntConstant("OopMapValue::type_shift").intValue(); |
|
67 |
REGISTER_SHIFT = db.lookupIntConstant("OopMapValue::register_shift").intValue(); |
|
68 |
TYPE_MASK = db.lookupIntConstant("OopMapValue::type_mask").intValue(); |
|
69 |
TYPE_MASK_IN_PLACE = db.lookupIntConstant("OopMapValue::type_mask_in_place").intValue(); |
|
70 |
REGISTER_MASK = db.lookupIntConstant("OopMapValue::register_mask").intValue(); |
|
71 |
REGISTER_MASK_IN_PLACE = db.lookupIntConstant("OopMapValue::register_mask_in_place").intValue(); |
|
72 |
OOP_VALUE = db.lookupIntConstant("OopMapValue::oop_value").intValue(); |
|
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
73 |
NARROWOOP_VALUE = db.lookupIntConstant("OopMapValue::narrowoop_value").intValue(); |
1 | 74 |
CALLEE_SAVED_VALUE = db.lookupIntConstant("OopMapValue::callee_saved_value").intValue(); |
75 |
DERIVED_OOP_VALUE = db.lookupIntConstant("OopMapValue::derived_oop_value").intValue(); |
|
76 |
} |
|
77 |
||
78 |
public static abstract class OopTypes { |
|
79 |
public static final OopTypes OOP_VALUE = new OopTypes() { int getValue() { return OopMapValue.OOP_VALUE; }}; |
|
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
80 |
public static final OopTypes NARROWOOP_VALUE = new OopTypes() { int getValue() { return OopMapValue.NARROWOOP_VALUE; }}; |
1 | 81 |
public static final OopTypes CALLEE_SAVED_VALUE = new OopTypes() { int getValue() { return OopMapValue.CALLEE_SAVED_VALUE; }}; |
82 |
public static final OopTypes DERIVED_OOP_VALUE = new OopTypes() { int getValue() { return OopMapValue.DERIVED_OOP_VALUE; }}; |
|
83 |
||
84 |
abstract int getValue(); |
|
85 |
protected OopTypes() {} |
|
86 |
} |
|
87 |
||
88 |
public OopMapValue() { setValue((short) 0); setContentReg(new VMReg(0)); } |
|
89 |
public OopMapValue(VMReg reg, OopTypes t) { setReg(reg); setType(t); } |
|
90 |
public OopMapValue(VMReg reg, OopTypes t, VMReg reg2) { setReg(reg); setType(t); setContentReg(reg2); } |
|
91 |
public OopMapValue(CompressedReadStream stream) { readFrom(stream); } |
|
92 |
||
93 |
public void readFrom(CompressedReadStream stream) { |
|
94 |
setValue((short) stream.readInt()); |
|
95 |
if (isCalleeSaved() || isDerivedOop()) { |
|
96 |
setContentReg(new VMReg(stream.readInt())); |
|
97 |
} |
|
98 |
} |
|
99 |
||
100 |
// Querying |
|
101 |
public boolean isOop() { return (getValue() & TYPE_MASK_IN_PLACE) == OOP_VALUE; } |
|
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
102 |
public boolean isNarrowOop() { return (getValue() & TYPE_MASK_IN_PLACE) == NARROWOOP_VALUE; } |
1 | 103 |
public boolean isCalleeSaved() { return (getValue() & TYPE_MASK_IN_PLACE) == CALLEE_SAVED_VALUE; } |
104 |
public boolean isDerivedOop() { return (getValue() & TYPE_MASK_IN_PLACE) == DERIVED_OOP_VALUE; } |
|
105 |
||
106 |
public VMReg getReg() { return new VMReg((getValue() & REGISTER_MASK_IN_PLACE) >> REGISTER_SHIFT); } |
|
107 |
public void setReg(VMReg r) { setValue((short) (r.getValue() << REGISTER_SHIFT | (getValue() & TYPE_MASK_IN_PLACE))); } |
|
108 |
||
109 |
public OopTypes getType() { |
|
110 |
int which = (getValue() & TYPE_MASK_IN_PLACE); |
|
58527
f9cc0141574c
8231586: enlarge encoding space for OopMapValue offsets
never
parents:
47216
diff
changeset
|
111 |
if (which == OOP_VALUE) return OopTypes.OOP_VALUE; |
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
112 |
else if (which == NARROWOOP_VALUE) return OopTypes.NARROWOOP_VALUE; |
1 | 113 |
else if (which == CALLEE_SAVED_VALUE) return OopTypes.CALLEE_SAVED_VALUE; |
114 |
else if (which == DERIVED_OOP_VALUE) return OopTypes.DERIVED_OOP_VALUE; |
|
115 |
else throw new InternalError("unknown which " + which + " (TYPE_MASK_IN_PLACE = " + TYPE_MASK_IN_PLACE + ")"); |
|
116 |
} |
|
117 |
public void setType(OopTypes t) { setValue((short) ((getValue() & REGISTER_MASK_IN_PLACE) | t.getValue())); } |
|
118 |
||
119 |
public VMReg getContentReg() { return new VMReg(contentReg); } |
|
120 |
public void setContentReg(VMReg r) { contentReg = (short) r.getValue(); } |
|
121 |
||
122 |
/** Physical location queries */ |
|
123 |
public boolean isRegisterLoc() { return (getReg().lessThan(VM.getVM().getVMRegImplInfo().getStack0())); } |
|
124 |
public boolean isStackLoc() { return (getReg().greaterThanOrEqual(VM.getVM().getVMRegImplInfo().getStack0())); } |
|
125 |
||
126 |
/** Returns offset from sp. */ |
|
127 |
public int getStackOffset() { |
|
128 |
if (Assert.ASSERTS_ENABLED) { |
|
129 |
Assert.that(isStackLoc(), "must be stack location"); |
|
130 |
} |
|
131 |
return getReg().minus(VM.getVM().getVMRegImplInfo().getStack0()); |
|
132 |
} |
|
133 |
||
134 |
//-------------------------------------------------------------------------------- |
|
135 |
// Internals only below this point |
|
136 |
// |
|
137 |
||
138 |
private void setValue(short value) { |
|
139 |
this.value = value; |
|
140 |
} |
|
141 |
||
142 |
private int getValue() { |
|
143 |
return value; |
|
144 |
} |
|
145 |
} |