Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.

  * Copyright 2009, 2010 Red Hat, Inc.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.com if you need additional information or have any

  * questions.

  *

  */

 #include "precompiled.hpp"

 #include "oops/arrayOop.hpp"

 #include "oops/oop.hpp"

 #include "shark/llvmHeaders.hpp"

 #include "shark/sharkContext.hpp"

 #include "utilities/globalDefinitions.hpp"

 using namespace llvm;

 SharkContext::SharkContext(const char* name)

   : LLVMContext(),

     _free_queue(NULL) {

   // Create a module to build our functions into

   _module = new Module(name, *this);

   // Create basic types

   _void_type    = Type::getVoidTy(*this);

   _bit_type     = Type::getInt1Ty(*this);

   _jbyte_type   = Type::getInt8Ty(*this);

   _jshort_type  = Type::getInt16Ty(*this);

   _jint_type    = Type::getInt32Ty(*this);

   _jlong_type   = Type::getInt64Ty(*this);

   _jfloat_type  = Type::getFloatTy(*this);

   _jdouble_type = Type::getDoubleTy(*this);

   // Create compound types

   _itableOffsetEntry_type = PointerType::getUnqual(

     ArrayType::get(jbyte_type(), itableOffsetEntry::size() * wordSize));

   _klass_type = PointerType::getUnqual(

     ArrayType::get(jbyte_type(), sizeof(Klass)));

   _jniEnv_type = PointerType::getUnqual(

     ArrayType::get(jbyte_type(), sizeof(JNIEnv)));

   _jniHandleBlock_type = PointerType::getUnqual(

     ArrayType::get(jbyte_type(), sizeof(JNIHandleBlock)));

   _methodOop_type = PointerType::getUnqual(

     ArrayType::get(jbyte_type(), sizeof(methodOopDesc)));

   _monitor_type = ArrayType::get(

     jbyte_type(), frame::interpreter_frame_monitor_size() * wordSize);

   _oop_type = PointerType::getUnqual(

     ArrayType::get(jbyte_type(), sizeof(oopDesc)));

   _thread_type = PointerType::getUnqual(

     ArrayType::get(jbyte_type(), sizeof(JavaThread)));

   _zeroStack_type = PointerType::getUnqual(

     ArrayType::get(jbyte_type(), sizeof(ZeroStack)));

   std::vector<const Type*> params;

   params.push_back(methodOop_type());

   params.push_back(intptr_type());

   params.push_back(thread_type());

   _entry_point_type = FunctionType::get(jint_type(), params, false);

   params.clear();

   params.push_back(methodOop_type());

   params.push_back(PointerType::getUnqual(jbyte_type()));

   params.push_back(intptr_type());

   params.push_back(thread_type());

   _osr_entry_point_type = FunctionType::get(jint_type(), params, false);

   // Create mappings

   for (int i = 0; i < T_CONFLICT; i++) {

     switch (i) {

     case T_BOOLEAN:

       _to_stackType[i] = jint_type();

       _to_arrayType[i] = jbyte_type();

       break;

     case T_BYTE:

       _to_stackType[i] = jint_type();

       _to_arrayType[i] = jbyte_type();

       break;

     case T_CHAR:

       _to_stackType[i] = jint_type();

       _to_arrayType[i] = jshort_type();

       break;

     case T_SHORT:

       _to_stackType[i] = jint_type();

       _to_arrayType[i] = jshort_type();

       break;

     case T_INT:

       _to_stackType[i] = jint_type();

       _to_arrayType[i] = jint_type();

       break;

     case T_LONG:

       _to_stackType[i] = jlong_type();

       _to_arrayType[i] = jlong_type();

       break;

     case T_FLOAT:

       _to_stackType[i] = jfloat_type();

       _to_arrayType[i] = jfloat_type();

       break;

     case T_DOUBLE:

       _to_stackType[i] = jdouble_type();

       _to_arrayType[i] = jdouble_type();

       break;

     case T_OBJECT:

     case T_ARRAY:

       _to_stackType[i] = oop_type();

       _to_arrayType[i] = oop_type();

       break;

     case T_ADDRESS:

       _to_stackType[i] = intptr_type();

       _to_arrayType[i] = NULL;

       break;

     default:

       _to_stackType[i] = NULL;

       _to_arrayType[i] = NULL;

     }

   }

 }

 class SharkFreeQueueItem : public CHeapObj {

  public:

   SharkFreeQueueItem(llvm::Function* function, SharkFreeQueueItem *next)

     : _function(function), _next(next) {}

  private:

   llvm::Function*     _function;

   SharkFreeQueueItem* _next;

  public:

   llvm::Function* function() const {

     return _function;

   }

   SharkFreeQueueItem* next() const {

     return _next;

   }

 };

 void SharkContext::push_to_free_queue(Function* function) {

   _free_queue = new SharkFreeQueueItem(function, _free_queue);

 }

 Function* SharkContext::pop_from_free_queue() {

   if (_free_queue == NULL)

     return NULL;

   SharkFreeQueueItem *item = _free_queue;

   Function *function = item->function();

   _free_queue = item->next();

   delete item;

   return function;

 }