1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
/*
* Copyright 2000-2002 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
#include "incls/_precompiled.incl"
#include "incls/_ciType.cpp.incl"
ciType* ciType::_basic_types[T_CONFLICT+1];
// ciType
//
// This class represents either a class (T_OBJECT), array (T_ARRAY),
// or one of the primitive types such as T_INT.
// ------------------------------------------------------------------
// ciType::ciType
//
ciType::ciType(BasicType basic_type) : ciObject() {
assert(basic_type >= T_BOOLEAN && basic_type <= T_CONFLICT, "range check");
assert(basic_type != T_OBJECT && basic_type != T_ARRAY, "not a reference type");
_basic_type = basic_type;
}
ciType::ciType(KlassHandle k) : ciObject(k) {
_basic_type = Klass::cast(k())->oop_is_array() ? T_ARRAY : T_OBJECT;
}
ciType::ciType(ciKlass* klass) : ciObject(klass) {
_basic_type = klass->is_array_klass_klass() ? T_ARRAY : T_OBJECT;
}
// ------------------------------------------------------------------
// ciType::is_subtype_of
//
bool ciType::is_subtype_of(ciType* type) {
if (this == type) return true;
if (is_klass() && type->is_klass())
return this->as_klass()->is_subtype_of(type->as_klass());
return false;
}
// ------------------------------------------------------------------
// ciType::print_impl
//
// Implementation of the print method.
void ciType::print_impl(outputStream* st) {
st->print(" type=");
print_name_on(st);
}
// ------------------------------------------------------------------
// ciType::print_name
//
// Print the name of this type
void ciType::print_name_on(outputStream* st) {
st->print(type2name(basic_type()));
}
// ------------------------------------------------------------------
// ciType::java_mirror
//
ciInstance* ciType::java_mirror() {
VM_ENTRY_MARK;
return CURRENT_THREAD_ENV->get_object(Universe::java_mirror(basic_type()))->as_instance();
}
// ------------------------------------------------------------------
// ciType::box_klass
//
ciKlass* ciType::box_klass() {
if (!is_primitive_type()) return this->as_klass(); // reference types are "self boxing"
// Void is "boxed" with a null.
if (basic_type() == T_VOID) return NULL;
VM_ENTRY_MARK;
return CURRENT_THREAD_ENV->get_object(SystemDictionary::box_klass(basic_type()))->as_instance_klass();
}
// ------------------------------------------------------------------
// ciType::make
//
// Produce the ciType for a given primitive BasicType.
// As a bonus, produce the right reference type for T_OBJECT.
// Does not work on T_ARRAY.
ciType* ciType::make(BasicType t) {
// short, etc.
// Note: Bare T_ADDRESS means a raw pointer type, not a return_address.
assert((uint)t < T_CONFLICT+1, "range check");
if (t == T_OBJECT) return ciEnv::_Object_klass; // java/lang/Object
assert(_basic_types[t] != NULL, "domain check");
return _basic_types[t];
}
// ciReturnAddress
//
// This class represents the type of a specific return address in the
// bytecodes.
// ------------------------------------------------------------------
// ciReturnAddress::ciReturnAddress
//
ciReturnAddress::ciReturnAddress(int bci) : ciType(T_ADDRESS) {
assert(0 <= bci, "bci cannot be negative");
_bci = bci;
}
// ------------------------------------------------------------------
// ciReturnAddress::print_impl
//
// Implementation of the print method.
void ciReturnAddress::print_impl(outputStream* st) {
st->print(" bci=%d", _bci);
}
// ------------------------------------------------------------------
// ciReturnAddress::make
ciReturnAddress* ciReturnAddress::make(int bci) {
GUARDED_VM_ENTRY(return CURRENT_ENV->get_return_address(bci);)
}
|
