1 /*
2 * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2009, 2010 Red Hat, Inc.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 // The LLVMContext class allows multiple instances of LLVM to operate
27 // independently of each other in a multithreaded context. We extend
28 // this here to store things in Shark that are LLVMContext-specific.
29
30 class SharkFreeQueueItem;
31
32 class SharkContext : public llvm::LLVMContext {
33 public:
34 SharkContext(const char* name);
35
36 private:
37 llvm::Module* _module;
38
39 #if SHARK_LLVM_VERSION >= 27
40 public:
41 #else
42 private:
43 #endif
44 llvm::Module* module() const {
45 return _module;
46 }
47
48 // Get this thread's SharkContext
49 public:
50 static SharkContext& current() {
51 return *SharkCompiler::compiler()->context();
52 }
53
54 // Module accessors
55 public:
56 #if SHARK_LLVM_VERSION < 27
57 llvm::ModuleProvider* module_provider() const {
58 return new llvm::ExistingModuleProvider(module());
59 }
60 #endif
61 void add_function(llvm::Function* function) const {
62 module()->getFunctionList().push_back(function);
63 }
64 llvm::Constant* get_external(const char* name,
65 const llvm::FunctionType* sig) {
66 return module()->getOrInsertFunction(name, sig);
67 }
68
69 // Basic types
70 private:
71 const llvm::Type* _void_type;
72 const llvm::IntegerType* _bit_type;
73 const llvm::IntegerType* _jbyte_type;
74 const llvm::IntegerType* _jshort_type;
75 const llvm::IntegerType* _jint_type;
76 const llvm::IntegerType* _jlong_type;
77 const llvm::Type* _jfloat_type;
78 const llvm::Type* _jdouble_type;
79
80 public:
81 const llvm::Type* void_type() const {
82 return _void_type;
83 }
84 const llvm::IntegerType* bit_type() const {
85 return _bit_type;
86 }
87 const llvm::IntegerType* jbyte_type() const {
88 return _jbyte_type;
89 }
90 const llvm::IntegerType* jshort_type() const {
91 return _jshort_type;
92 }
93 const llvm::IntegerType* jint_type() const {
94 return _jint_type;
95 }
96 const llvm::IntegerType* jlong_type() const {
97 return _jlong_type;
98 }
99 const llvm::Type* jfloat_type() const {
100 return _jfloat_type;
101 }
102 const llvm::Type* jdouble_type() const {
103 return _jdouble_type;
104 }
105 const llvm::IntegerType* intptr_type() const {
106 return LP64_ONLY(jlong_type()) NOT_LP64(jint_type());
107 }
108
109 // Compound types
110 private:
111 const llvm::PointerType* _itableOffsetEntry_type;
112 const llvm::PointerType* _jniEnv_type;
113 const llvm::PointerType* _jniHandleBlock_type;
114 const llvm::PointerType* _klass_type;
115 const llvm::PointerType* _methodOop_type;
116 const llvm::ArrayType* _monitor_type;
117 const llvm::PointerType* _oop_type;
118 const llvm::PointerType* _thread_type;
119 const llvm::PointerType* _zeroStack_type;
120 const llvm::FunctionType* _entry_point_type;
121 const llvm::FunctionType* _osr_entry_point_type;
122
123 public:
124 const llvm::PointerType* itableOffsetEntry_type() const {
125 return _itableOffsetEntry_type;
126 }
127 const llvm::PointerType* jniEnv_type() const {
128 return _jniEnv_type;
129 }
130 const llvm::PointerType* jniHandleBlock_type() const {
131 return _jniHandleBlock_type;
132 }
133 const llvm::PointerType* klass_type() const {
134 return _klass_type;
135 }
136 const llvm::PointerType* methodOop_type() const {
137 return _methodOop_type;
138 }
139 const llvm::ArrayType* monitor_type() const {
140 return _monitor_type;
141 }
142 const llvm::PointerType* oop_type() const {
143 return _oop_type;
144 }
145 const llvm::PointerType* thread_type() const {
146 return _thread_type;
147 }
148 const llvm::PointerType* zeroStack_type() const {
149 return _zeroStack_type;
150 }
151 const llvm::FunctionType* entry_point_type() const {
152 return _entry_point_type;
153 }
154 const llvm::FunctionType* osr_entry_point_type() const {
155 return _osr_entry_point_type;
156 }
157
158 // Mappings
159 private:
160 const llvm::Type* _to_stackType[T_CONFLICT];
161 const llvm::Type* _to_arrayType[T_CONFLICT];
162
163 private:
164 const llvm::Type* map_type(const llvm::Type* const* table,
165 BasicType type) const {
166 assert(type >= 0 && type < T_CONFLICT, "unhandled type");
167 const llvm::Type* result = table[type];
168 assert(type != NULL, "unhandled type");
169 return result;
170 }
171
172 public:
173 const llvm::Type* to_stackType(BasicType type) const {
174 return map_type(_to_stackType, type);
175 }
176 const llvm::Type* to_arrayType(BasicType type) const {
177 return map_type(_to_arrayType, type);
178 }
179
180 // Functions queued for freeing
181 private:
182 SharkFreeQueueItem* _free_queue;
183
184 public:
185 void push_to_free_queue(llvm::Function* function);
186 llvm::Function* pop_from_free_queue();
187 };