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