1 /*
2 * Copyright (c) 1999, 2010, 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 #ifndef SHARE_VM_SHARK_SHARKCONTEXT_HPP
27 #define SHARE_VM_SHARK_SHARKCONTEXT_HPP
28
29 #include "shark/llvmHeaders.hpp"
30 #include "shark/sharkCompiler.hpp"
31
32 // The LLVMContext class allows multiple instances of LLVM to operate
33 // independently of each other in a multithreaded context. We extend
34 // this here to store things in Shark that are LLVMContext-specific.
35
36 class SharkFreeQueueItem;
37
38 class SharkContext : public llvm::LLVMContext {
39 public:
40 SharkContext(const char* name);
41
42 private:
43 llvm::Module* _module;
44
45 #if SHARK_LLVM_VERSION >= 27
46 public:
47 #else
48 private:
49 #endif
50 llvm::Module* module() const {
51 return _module;
52 }
53
54 // Get this thread's SharkContext
55 public:
56 static SharkContext& current() {
57 return *SharkCompiler::compiler()->context();
58 }
59
60 // Module accessors
61 public:
62 #if SHARK_LLVM_VERSION < 27
63 llvm::ModuleProvider* module_provider() const {
64 return new llvm::ExistingModuleProvider(module());
65 }
66 #endif
67 void add_function(llvm::Function* function) const {
68 module()->getFunctionList().push_back(function);
69 }
70 llvm::Constant* get_external(const char* name,
71 const llvm::FunctionType* sig) {
72 return module()->getOrInsertFunction(name, sig);
73 }
74
75 // Basic types
76 private:
77 const llvm::Type* _void_type;
78 const llvm::IntegerType* _bit_type;
79 const llvm::IntegerType* _jbyte_type;
80 const llvm::IntegerType* _jshort_type;
81 const llvm::IntegerType* _jint_type;
82 const llvm::IntegerType* _jlong_type;
83 const llvm::Type* _jfloat_type;
84 const llvm::Type* _jdouble_type;
85
86 public:
87 const llvm::Type* void_type() const {
88 return _void_type;
89 }
90 const llvm::IntegerType* bit_type() const {
91 return _bit_type;
92 }
93 const llvm::IntegerType* jbyte_type() const {
94 return _jbyte_type;
95 }
96 const llvm::IntegerType* jshort_type() const {
97 return _jshort_type;
98 }
99 const llvm::IntegerType* jint_type() const {
100 return _jint_type;
101 }
102 const llvm::IntegerType* jlong_type() const {
103 return _jlong_type;
104 }
105 const llvm::Type* jfloat_type() const {
106 return _jfloat_type;
107 }
108 const llvm::Type* jdouble_type() const {
109 return _jdouble_type;
110 }
111 const llvm::IntegerType* intptr_type() const {
112 return LP64_ONLY(jlong_type()) NOT_LP64(jint_type());
113 }
114
115 // Compound types
116 private:
117 const llvm::PointerType* _itableOffsetEntry_type;
118 const llvm::PointerType* _jniEnv_type;
119 const llvm::PointerType* _jniHandleBlock_type;
120 const llvm::PointerType* _klass_type;
121 const llvm::PointerType* _methodOop_type;
122 const llvm::ArrayType* _monitor_type;
123 const llvm::PointerType* _oop_type;
124 const llvm::PointerType* _thread_type;
125 const llvm::PointerType* _zeroStack_type;
126 const llvm::FunctionType* _entry_point_type;
127 const llvm::FunctionType* _osr_entry_point_type;
128
129 public:
130 const llvm::PointerType* itableOffsetEntry_type() const {
131 return _itableOffsetEntry_type;
132 }
133 const llvm::PointerType* jniEnv_type() const {
134 return _jniEnv_type;
135 }
136 const llvm::PointerType* jniHandleBlock_type() const {
137 return _jniHandleBlock_type;
138 }
139 const llvm::PointerType* klass_type() const {
140 return _klass_type;
141 }
142 const llvm::PointerType* methodOop_type() const {
143 return _methodOop_type;
144 }
145 const llvm::ArrayType* monitor_type() const {
146 return _monitor_type;
147 }
148 const llvm::PointerType* oop_type() const {
149 return _oop_type;
150 }
151 const llvm::PointerType* thread_type() const {
152 return _thread_type;
153 }
154 const llvm::PointerType* zeroStack_type() const {
155 return _zeroStack_type;
156 }
157 const llvm::FunctionType* entry_point_type() const {
158 return _entry_point_type;
159 }
160 const llvm::FunctionType* osr_entry_point_type() const {
161 return _osr_entry_point_type;
162 }
163
164 // Mappings
165 private:
166 const llvm::Type* _to_stackType[T_CONFLICT];
167 const llvm::Type* _to_arrayType[T_CONFLICT];
168
169 private:
170 const llvm::Type* map_type(const llvm::Type* const* table,
171 BasicType type) const {
172 assert(type >= 0 && type < T_CONFLICT, "unhandled type");
173 const llvm::Type* result = table[type];
174 assert(result != NULL, "unhandled type");
175 return result;
176 }
177
178 public:
179 const llvm::Type* to_stackType(BasicType type) const {
180 return map_type(_to_stackType, type);
181 }
182 const llvm::Type* to_arrayType(BasicType type) const {
183 return map_type(_to_arrayType, type);
184 }
185
186 // Functions queued for freeing
187 private:
188 SharkFreeQueueItem* _free_queue;
189
190 public:
191 void push_to_free_queue(llvm::Function* function);
192 llvm::Function* pop_from_free_queue();
193 };
194
195 #endif // SHARE_VM_SHARK_SHARKCONTEXT_HPP