1 /* 2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. 3 * Copyright 2009 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_SHARKNATIVEWRAPPER_HPP 27 #define SHARE_VM_SHARK_SHARKNATIVEWRAPPER_HPP 28 29 #include "runtime/handles.hpp" 30 #include "shark/llvmHeaders.hpp" 31 #include "shark/sharkBuilder.hpp" 32 #include "shark/sharkContext.hpp" 33 #include "shark/sharkInvariants.hpp" 34 #include "shark/sharkStack.hpp" 35 36 class SharkNativeWrapper : public SharkCompileInvariants { 37 friend class SharkStackWithNativeFrame; 38 39 public: 40 static SharkNativeWrapper* build(SharkBuilder* builder, 41 methodHandle target, 42 const char* name, 43 BasicType* arg_types, 44 BasicType return_type) { 45 return new SharkNativeWrapper(builder, 46 target, 47 name, 48 arg_types, 49 return_type); 50 } 51 52 private: 53 SharkNativeWrapper(SharkBuilder* builder, 54 methodHandle target, 55 const char* name, 56 BasicType* arg_types, 57 BasicType return_type) 58 : SharkCompileInvariants(NULL, builder), 59 _target(target), 60 _arg_types(arg_types), 61 _return_type(return_type), 62 _lock_slot_offset(0) { initialize(name); } 63 64 private: 65 void initialize(const char* name); 66 67 private: 68 methodHandle _target; 69 BasicType* _arg_types; 70 BasicType _return_type; 71 llvm::Function* _function; 72 SharkStack* _stack; 73 llvm::Value* _oop_tmp_slot; 74 OopMapSet* _oop_maps; 75 int _receiver_slot_offset; 76 int _lock_slot_offset; 77 78 // The method being compiled. 79 protected: 80 methodHandle target() const { 81 return _target; 82 } 83 84 // Properties of the method. 85 protected: 86 int arg_size() const { 87 return target()->size_of_parameters(); 88 } 89 BasicType arg_type(int i) const { 90 return _arg_types[i]; 91 } 92 BasicType return_type() const { 93 return _return_type; 94 } 95 bool is_static() const { 96 return target()->is_static(); 97 } 98 bool is_synchronized() const { 99 return target()->is_synchronized(); 100 } 101 bool is_returning_oop() const { 102 return target()->is_returning_oop(); 103 } 104 105 // The LLVM function we are building. 106 public: 107 llvm::Function* function() const { 108 return _function; 109 } 110 111 // The Zero stack and our frame on it. 112 protected: 113 SharkStack* stack() const { 114 return _stack; 115 } 116 117 // Temporary oop storage. 118 protected: 119 llvm::Value* oop_tmp_slot() const { 120 assert(is_static() || is_returning_oop(), "should be"); 121 return _oop_tmp_slot; 122 } 123 124 // Information required by nmethod::new_native_nmethod(). 125 public: 126 int frame_size() const { 127 return stack()->oopmap_frame_size(); 128 } 129 ByteSize receiver_offset() const { 130 return in_ByteSize(_receiver_slot_offset * wordSize); 131 } 132 ByteSize lock_offset() const { 133 return in_ByteSize(_lock_slot_offset * wordSize); 134 } 135 OopMapSet* oop_maps() const { 136 return _oop_maps; 137 } 138 139 // Helpers. 140 private: 141 llvm::BasicBlock* CreateBlock(const char* name = "") const { 142 return llvm::BasicBlock::Create(SharkContext::current(), name, function()); 143 } 144 llvm::Value* thread_state_address() const { 145 return builder()->CreateAddressOfStructEntry( 146 thread(), JavaThread::thread_state_offset(), 147 llvm::PointerType::getUnqual(SharkType::jint_type()), 148 "thread_state_address"); 149 } 150 llvm::Value* pending_exception_address() const { 151 return builder()->CreateAddressOfStructEntry( 152 thread(), Thread::pending_exception_offset(), 153 llvm::PointerType::getUnqual(SharkType::oop_type()), 154 "pending_exception_address"); 155 } 156 void CreateSetThreadState(JavaThreadState state) const { 157 builder()->CreateStore( 158 LLVMValue::jint_constant(state), thread_state_address()); 159 } 160 void CreateWriteMemorySerializePage() const { 161 builder()->CreateStore( 162 LLVMValue::jint_constant(1), 163 builder()->CreateIntToPtr( 164 builder()->CreateAdd( 165 LLVMValue::intptr_constant( 166 (intptr_t) os::get_memory_serialize_page()), 167 builder()->CreateAnd( 168 builder()->CreateLShr( 169 builder()->CreatePtrToInt(thread(), SharkType::intptr_type()), 170 LLVMValue::intptr_constant(os::get_serialize_page_shift_count())), 171 LLVMValue::intptr_constant(os::get_serialize_page_mask()))), 172 llvm::PointerType::getUnqual(SharkType::jint_type()))); 173 } 174 void CreateResetHandleBlock() const { 175 llvm::Value *active_handles = builder()->CreateValueOfStructEntry( 176 thread(), 177 JavaThread::active_handles_offset(), 178 SharkType::jniHandleBlock_type(), 179 "active_handles"); 180 builder()->CreateStore( 181 LLVMValue::intptr_constant(0), 182 builder()->CreateAddressOfStructEntry( 183 active_handles, 184 in_ByteSize(JNIHandleBlock::top_offset_in_bytes()), 185 llvm::PointerType::getUnqual(SharkType::intptr_type()), 186 "top")); 187 } 188 llvm::LoadInst* CreateLoadPendingException() const { 189 return builder()->CreateLoad( 190 pending_exception_address(), "pending_exception"); 191 } 192 }; 193 194 #endif // SHARE_VM_SHARK_SHARKNATIVEWRAPPER_HPP