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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 #include "incls/_precompiled.incl"
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27 #include "incls/_sharkContext.cpp.incl"
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28
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29 using namespace llvm;
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30
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31 SharkContext::SharkContext(const char* name)
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32 : LLVMContext(),
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33 _free_queue(NULL) {
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34 // Create a module to build our functions into
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35 _module = new Module(name, *this);
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36
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37 // Create basic types
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38 _void_type = Type::getVoidTy(*this);
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39 _bit_type = Type::getInt1Ty(*this);
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40 _jbyte_type = Type::getInt8Ty(*this);
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41 _jshort_type = Type::getInt16Ty(*this);
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42 _jint_type = Type::getInt32Ty(*this);
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43 _jlong_type = Type::getInt64Ty(*this);
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44 _jfloat_type = Type::getFloatTy(*this);
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45 _jdouble_type = Type::getDoubleTy(*this);
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46
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47 // Create compound types
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48 _itableOffsetEntry_type = PointerType::getUnqual(
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49 ArrayType::get(jbyte_type(), itableOffsetEntry::size() * wordSize));
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50
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51 _klass_type = PointerType::getUnqual(
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52 ArrayType::get(jbyte_type(), sizeof(Klass)));
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53
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54 _jniEnv_type = PointerType::getUnqual(
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55 ArrayType::get(jbyte_type(), sizeof(JNIEnv)));
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56
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57 _jniHandleBlock_type = PointerType::getUnqual(
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58 ArrayType::get(jbyte_type(), sizeof(JNIHandleBlock)));
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59
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60 _methodOop_type = PointerType::getUnqual(
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61 ArrayType::get(jbyte_type(), sizeof(methodOopDesc)));
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62
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63 _monitor_type = ArrayType::get(
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64 jbyte_type(), frame::interpreter_frame_monitor_size() * wordSize);
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65
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66 _oop_type = PointerType::getUnqual(
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67 ArrayType::get(jbyte_type(), sizeof(oopDesc)));
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68
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69 _thread_type = PointerType::getUnqual(
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70 ArrayType::get(jbyte_type(), sizeof(JavaThread)));
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71
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72 _zeroStack_type = PointerType::getUnqual(
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73 ArrayType::get(jbyte_type(), sizeof(ZeroStack)));
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74
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75 std::vector<const Type*> params;
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76 params.push_back(methodOop_type());
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77 params.push_back(intptr_type());
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78 params.push_back(thread_type());
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79 _entry_point_type = FunctionType::get(jint_type(), params, false);
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80
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81 params.clear();
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82 params.push_back(methodOop_type());
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83 params.push_back(PointerType::getUnqual(jbyte_type()));
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84 params.push_back(intptr_type());
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85 params.push_back(thread_type());
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86 _osr_entry_point_type = FunctionType::get(jint_type(), params, false);
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87
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88 // Create mappings
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89 for (int i = 0; i < T_CONFLICT; i++) {
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90 switch (i) {
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91 case T_BOOLEAN:
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92 _to_stackType[i] = jint_type();
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93 _to_arrayType[i] = jbyte_type();
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94 break;
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95
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96 case T_BYTE:
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97 _to_stackType[i] = jint_type();
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98 _to_arrayType[i] = jbyte_type();
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99 break;
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100
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101 case T_CHAR:
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102 _to_stackType[i] = jint_type();
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103 _to_arrayType[i] = jshort_type();
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104 break;
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105
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106 case T_SHORT:
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107 _to_stackType[i] = jint_type();
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108 _to_arrayType[i] = jshort_type();
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109 break;
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110
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111 case T_INT:
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112 _to_stackType[i] = jint_type();
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113 _to_arrayType[i] = jint_type();
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114 break;
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115
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116 case T_LONG:
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117 _to_stackType[i] = jlong_type();
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118 _to_arrayType[i] = jlong_type();
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119 break;
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120
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121 case T_FLOAT:
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122 _to_stackType[i] = jfloat_type();
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123 _to_arrayType[i] = jfloat_type();
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124 break;
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125
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126 case T_DOUBLE:
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127 _to_stackType[i] = jdouble_type();
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128 _to_arrayType[i] = jdouble_type();
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129 break;
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130
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131 case T_OBJECT:
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132 case T_ARRAY:
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133 _to_stackType[i] = oop_type();
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134 _to_arrayType[i] = oop_type();
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135 break;
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136
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137 case T_ADDRESS:
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138 _to_stackType[i] = intptr_type();
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139 _to_arrayType[i] = NULL;
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140 break;
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141
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142 default:
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143 _to_stackType[i] = NULL;
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144 _to_arrayType[i] = NULL;
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145 }
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146 }
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147 }
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148
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149 class SharkFreeQueueItem : public CHeapObj {
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150 public:
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151 SharkFreeQueueItem(llvm::Function* function, SharkFreeQueueItem *next)
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152 : _function(function), _next(next) {}
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153
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154 private:
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155 llvm::Function* _function;
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156 SharkFreeQueueItem* _next;
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157
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158 public:
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159 llvm::Function* function() const {
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160 return _function;
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161 }
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162 SharkFreeQueueItem* next() const {
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163 return _next;
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164 }
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165 };
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166
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167 void SharkContext::push_to_free_queue(Function* function) {
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168 _free_queue = new SharkFreeQueueItem(function, _free_queue);
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169 }
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170
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171 Function* SharkContext::pop_from_free_queue() {
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172 if (_free_queue == NULL)
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173 return NULL;
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174
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175 SharkFreeQueueItem *item = _free_queue;
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176 Function *function = item->function();
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177 _free_queue = item->next();
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178 delete item;
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179 return function;
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180 }
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