Mercurial > hg > graal-compiler
comparison src/share/vm/ci/ciType.cpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | 4ce7240d622c |
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-1:000000000000 | 0:a61af66fc99e |
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1 /* | |
2 * Copyright 2000-2002 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 #include "incls/_precompiled.incl" | |
26 #include "incls/_ciType.cpp.incl" | |
27 | |
28 ciType* ciType::_basic_types[T_CONFLICT+1]; | |
29 | |
30 // ciType | |
31 // | |
32 // This class represents either a class (T_OBJECT), array (T_ARRAY), | |
33 // or one of the primitive types such as T_INT. | |
34 | |
35 // ------------------------------------------------------------------ | |
36 // ciType::ciType | |
37 // | |
38 ciType::ciType(BasicType basic_type) : ciObject() { | |
39 assert(basic_type >= T_BOOLEAN && basic_type <= T_CONFLICT, "range check"); | |
40 assert(basic_type != T_OBJECT && basic_type != T_ARRAY, "not a reference type"); | |
41 _basic_type = basic_type; | |
42 } | |
43 | |
44 ciType::ciType(KlassHandle k) : ciObject(k) { | |
45 _basic_type = Klass::cast(k())->oop_is_array() ? T_ARRAY : T_OBJECT; | |
46 } | |
47 | |
48 ciType::ciType(ciKlass* klass) : ciObject(klass) { | |
49 _basic_type = klass->is_array_klass_klass() ? T_ARRAY : T_OBJECT; | |
50 } | |
51 | |
52 | |
53 // ------------------------------------------------------------------ | |
54 // ciType::is_subtype_of | |
55 // | |
56 bool ciType::is_subtype_of(ciType* type) { | |
57 if (this == type) return true; | |
58 if (is_klass() && type->is_klass()) | |
59 return this->as_klass()->is_subtype_of(type->as_klass()); | |
60 return false; | |
61 } | |
62 | |
63 // ------------------------------------------------------------------ | |
64 // ciType::print_impl | |
65 // | |
66 // Implementation of the print method. | |
67 void ciType::print_impl(outputStream* st) { | |
68 st->print(" type="); | |
69 print_name_on(st); | |
70 } | |
71 | |
72 // ------------------------------------------------------------------ | |
73 // ciType::print_name | |
74 // | |
75 // Print the name of this type | |
76 void ciType::print_name_on(outputStream* st) { | |
77 st->print(type2name(basic_type())); | |
78 } | |
79 | |
80 | |
81 | |
82 // ------------------------------------------------------------------ | |
83 // ciType::java_mirror | |
84 // | |
85 ciInstance* ciType::java_mirror() { | |
86 VM_ENTRY_MARK; | |
87 return CURRENT_THREAD_ENV->get_object(Universe::java_mirror(basic_type()))->as_instance(); | |
88 } | |
89 | |
90 // ------------------------------------------------------------------ | |
91 // ciType::box_klass | |
92 // | |
93 ciKlass* ciType::box_klass() { | |
94 if (!is_primitive_type()) return this->as_klass(); // reference types are "self boxing" | |
95 | |
96 // Void is "boxed" with a null. | |
97 if (basic_type() == T_VOID) return NULL; | |
98 | |
99 VM_ENTRY_MARK; | |
100 return CURRENT_THREAD_ENV->get_object(SystemDictionary::box_klass(basic_type()))->as_instance_klass(); | |
101 } | |
102 | |
103 | |
104 // ------------------------------------------------------------------ | |
105 // ciType::make | |
106 // | |
107 // Produce the ciType for a given primitive BasicType. | |
108 // As a bonus, produce the right reference type for T_OBJECT. | |
109 // Does not work on T_ARRAY. | |
110 ciType* ciType::make(BasicType t) { | |
111 // short, etc. | |
112 // Note: Bare T_ADDRESS means a raw pointer type, not a return_address. | |
113 assert((uint)t < T_CONFLICT+1, "range check"); | |
114 if (t == T_OBJECT) return ciEnv::_Object; // java/lang/Object | |
115 assert(_basic_types[t] != NULL, "domain check"); | |
116 return _basic_types[t]; | |
117 } | |
118 | |
119 // ciReturnAddress | |
120 // | |
121 // This class represents the type of a specific return address in the | |
122 // bytecodes. | |
123 | |
124 // ------------------------------------------------------------------ | |
125 // ciReturnAddress::ciReturnAddress | |
126 // | |
127 ciReturnAddress::ciReturnAddress(int bci) : ciType(T_ADDRESS) { | |
128 assert(0 <= bci, "bci cannot be negative"); | |
129 _bci = bci; | |
130 } | |
131 | |
132 // ------------------------------------------------------------------ | |
133 // ciReturnAddress::print_impl | |
134 // | |
135 // Implementation of the print method. | |
136 void ciReturnAddress::print_impl(outputStream* st) { | |
137 st->print(" bci=%d", _bci); | |
138 } | |
139 | |
140 // ------------------------------------------------------------------ | |
141 // ciReturnAddress::make | |
142 ciReturnAddress* ciReturnAddress::make(int bci) { | |
143 GUARDED_VM_ENTRY(return CURRENT_ENV->get_return_address(bci);) | |
144 } |