1 /*
2 * Copyright (c) 1999, 2012, 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 public:
46 llvm::Module* module() const {
47 return _module;
48 }
49
50 // Get this thread's SharkContext
51 public:
52 static SharkContext& current() {
53 return *SharkCompiler::compiler()->context();
54 }
55
56 // Module accessors
57 public:
58 void add_function(llvm::Function* function) const {
59 module()->getFunctionList().push_back(function);
60 }
61 llvm::Constant* get_external(const char* name,
62 llvm::FunctionType* sig) {
63 return module()->getOrInsertFunction(name, sig);
64 }
65
66 // Basic types
67 private:
68 llvm::Type* _void_type;
69 llvm::IntegerType* _bit_type;
70 llvm::IntegerType* _jbyte_type;
71 llvm::IntegerType* _jshort_type;
72 llvm::IntegerType* _jint_type;
73 llvm::IntegerType* _jlong_type;
74 llvm::Type* _jfloat_type;
75 llvm::Type* _jdouble_type;
76
77 public:
78 llvm::Type* void_type() const {
79 return _void_type;
80 }
81 llvm::IntegerType* bit_type() const {
82 return _bit_type;
83 }
84 llvm::IntegerType* jbyte_type() const {
85 return _jbyte_type;
86 }
87 llvm::IntegerType* jshort_type() const {
88 return _jshort_type;
89 }
90 llvm::IntegerType* jint_type() const {
91 return _jint_type;
92 }
93 llvm::IntegerType* jlong_type() const {
94 return _jlong_type;
95 }
96 llvm::Type* jfloat_type() const {
97 return _jfloat_type;
98 }
99 llvm::Type* jdouble_type() const {
100 return _jdouble_type;
101 }
102 llvm::IntegerType* intptr_type() const {
103 return LP64_ONLY(jlong_type()) NOT_LP64(jint_type());
104 }
105
106 // Compound types
107 private:
108 llvm::PointerType* _itableOffsetEntry_type;
109 llvm::PointerType* _jniEnv_type;
110 llvm::PointerType* _jniHandleBlock_type;
111 llvm::PointerType* _Metadata_type;
112 llvm::PointerType* _klass_type;
113 llvm::PointerType* _Method_type;
114 llvm::ArrayType* _monitor_type;
115 llvm::PointerType* _oop_type;
116 llvm::PointerType* _thread_type;
117 llvm::PointerType* _zeroStack_type;
118 llvm::FunctionType* _entry_point_type;
119 llvm::FunctionType* _osr_entry_point_type;
120
121 public:
122 llvm::PointerType* itableOffsetEntry_type() const {
123 return _itableOffsetEntry_type;
124 }
125 llvm::PointerType* jniEnv_type() const {
126 return _jniEnv_type;
127 }
128 llvm::PointerType* jniHandleBlock_type() const {
129 return _jniHandleBlock_type;
130 }
131 llvm::PointerType* Metadata_type() const {
132 return _Metadata_type;
133 }
134 llvm::PointerType* klass_type() const {
135 return _klass_type;
136 }
137 llvm::PointerType* Method_type() const {
138 return _Method_type;
139 }
140 llvm::ArrayType* monitor_type() const {
141 return _monitor_type;
142 }
143 llvm::PointerType* oop_type() const {
144 return _oop_type;
145 }
146 llvm::PointerType* thread_type() const {
147 return _thread_type;
148 }
149 llvm::PointerType* zeroStack_type() const {
150 return _zeroStack_type;
151 }
152 llvm::FunctionType* entry_point_type() const {
153 return _entry_point_type;
154 }
155 llvm::FunctionType* osr_entry_point_type() const {
156 return _osr_entry_point_type;
157 }
158
159 // Mappings
160 private:
161 llvm::Type* _to_stackType[T_CONFLICT];
162 llvm::Type* _to_arrayType[T_CONFLICT];
163
164 private:
165 llvm::Type* map_type(llvm::Type* const* table,
166 BasicType type) const {
167 assert(type >= 0 && type < T_CONFLICT, "unhandled type");
168 llvm::Type* result = table[type];
169 assert(result != NULL, "unhandled type");
170 return result;
171 }
172
173 public:
174 llvm::Type* to_stackType(BasicType type) const {
175 return map_type(_to_stackType, type);
176 }
177 llvm::Type* to_arrayType(BasicType type) const {
178 return map_type(_to_arrayType, type);
179 }
180
181 // Functions queued for freeing
182 private:
183 SharkFreeQueueItem* _free_queue;
184
185 public:
186 void push_to_free_queue(llvm::Function* function);
187 llvm::Function* pop_from_free_queue();
188 };
189
190 #endif // SHARE_VM_SHARK_SHARKCONTEXT_HPP