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1692
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1 /*
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2 * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
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3 * Copyright 2009, 2010 Red Hat, Inc.
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 *
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6 * This code is free software; you can redistribute it and/or modify it
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7 * under the terms of the GNU General Public License version 2 only, as
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8 * published by the Free Software Foundation.
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9 *
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10 * This code is distributed in the hope that it will be useful, but WITHOUT
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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13 * version 2 for more details (a copy is included in the LICENSE file that
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14 * accompanied this code).
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15 *
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16 * You should have received a copy of the GNU General Public License version
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17 * 2 along with this work; if not, write to the Free Software Foundation,
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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19 *
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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21 * or visit www.oracle.com if you need additional information or have any
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22 * questions.
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23 *
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24 */
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25
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26 // The LLVMContext class allows multiple instances of LLVM to operate
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27 // independently of each other in a multithreaded context. We extend
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28 // this here to store things in Shark that are LLVMContext-specific.
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29
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30 class SharkFreeQueueItem;
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31
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32 class SharkContext : public llvm::LLVMContext {
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33 public:
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34 SharkContext(const char* name);
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35
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36 private:
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37 llvm::Module* _module;
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38
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39 #if SHARK_LLVM_VERSION >= 27
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40 public:
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41 #else
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42 private:
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43 #endif
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44 llvm::Module* module() const {
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45 return _module;
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46 }
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47
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48 // Get this thread's SharkContext
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49 public:
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50 static SharkContext& current() {
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51 return *SharkCompiler::compiler()->context();
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52 }
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53
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54 // Module accessors
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55 public:
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56 #if SHARK_LLVM_VERSION < 27
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57 llvm::ModuleProvider* module_provider() const {
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58 return new llvm::ExistingModuleProvider(module());
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59 }
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60 #endif
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61 void add_function(llvm::Function* function) const {
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62 module()->getFunctionList().push_back(function);
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63 }
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64 llvm::Constant* get_external(const char* name,
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65 const llvm::FunctionType* sig) {
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66 return module()->getOrInsertFunction(name, sig);
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67 }
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68
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69 // Basic types
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70 private:
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71 const llvm::Type* _void_type;
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72 const llvm::IntegerType* _bit_type;
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73 const llvm::IntegerType* _jbyte_type;
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74 const llvm::IntegerType* _jshort_type;
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75 const llvm::IntegerType* _jint_type;
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76 const llvm::IntegerType* _jlong_type;
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77 const llvm::Type* _jfloat_type;
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78 const llvm::Type* _jdouble_type;
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79
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80 public:
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81 const llvm::Type* void_type() const {
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82 return _void_type;
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83 }
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84 const llvm::IntegerType* bit_type() const {
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85 return _bit_type;
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86 }
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87 const llvm::IntegerType* jbyte_type() const {
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88 return _jbyte_type;
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89 }
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90 const llvm::IntegerType* jshort_type() const {
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91 return _jshort_type;
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92 }
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93 const llvm::IntegerType* jint_type() const {
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94 return _jint_type;
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95 }
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96 const llvm::IntegerType* jlong_type() const {
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97 return _jlong_type;
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98 }
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99 const llvm::Type* jfloat_type() const {
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100 return _jfloat_type;
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101 }
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102 const llvm::Type* jdouble_type() const {
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103 return _jdouble_type;
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104 }
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105 const llvm::IntegerType* intptr_type() const {
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106 return LP64_ONLY(jlong_type()) NOT_LP64(jint_type());
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107 }
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108
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109 // Compound types
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110 private:
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111 const llvm::PointerType* _itableOffsetEntry_type;
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112 const llvm::PointerType* _jniEnv_type;
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113 const llvm::PointerType* _jniHandleBlock_type;
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114 const llvm::PointerType* _klass_type;
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115 const llvm::PointerType* _methodOop_type;
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116 const llvm::ArrayType* _monitor_type;
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117 const llvm::PointerType* _oop_type;
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118 const llvm::PointerType* _thread_type;
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119 const llvm::PointerType* _zeroStack_type;
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120 const llvm::FunctionType* _entry_point_type;
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121 const llvm::FunctionType* _osr_entry_point_type;
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122
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123 public:
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124 const llvm::PointerType* itableOffsetEntry_type() const {
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125 return _itableOffsetEntry_type;
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126 }
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127 const llvm::PointerType* jniEnv_type() const {
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128 return _jniEnv_type;
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129 }
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130 const llvm::PointerType* jniHandleBlock_type() const {
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131 return _jniHandleBlock_type;
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132 }
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133 const llvm::PointerType* klass_type() const {
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134 return _klass_type;
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135 }
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136 const llvm::PointerType* methodOop_type() const {
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137 return _methodOop_type;
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138 }
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139 const llvm::ArrayType* monitor_type() const {
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140 return _monitor_type;
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141 }
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142 const llvm::PointerType* oop_type() const {
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143 return _oop_type;
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144 }
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145 const llvm::PointerType* thread_type() const {
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146 return _thread_type;
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147 }
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148 const llvm::PointerType* zeroStack_type() const {
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149 return _zeroStack_type;
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150 }
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151 const llvm::FunctionType* entry_point_type() const {
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152 return _entry_point_type;
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153 }
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154 const llvm::FunctionType* osr_entry_point_type() const {
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155 return _osr_entry_point_type;
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156 }
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157
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158 // Mappings
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159 private:
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160 const llvm::Type* _to_stackType[T_CONFLICT];
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161 const llvm::Type* _to_arrayType[T_CONFLICT];
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162
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163 private:
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164 const llvm::Type* map_type(const llvm::Type* const* table,
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165 BasicType type) const {
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166 assert(type >= 0 && type < T_CONFLICT, "unhandled type");
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167 const llvm::Type* result = table[type];
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168 assert(type != NULL, "unhandled type");
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169 return result;
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170 }
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171
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172 public:
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173 const llvm::Type* to_stackType(BasicType type) const {
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174 return map_type(_to_stackType, type);
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175 }
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176 const llvm::Type* to_arrayType(BasicType type) const {
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177 return map_type(_to_arrayType, type);
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178 }
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179
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180 // Functions queued for freeing
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181 private:
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182 SharkFreeQueueItem* _free_queue;
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183
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184 public:
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185 void push_to_free_queue(llvm::Function* function);
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186 llvm::Function* pop_from_free_queue();
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187 };
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