--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/shark/sharkContext.cpp	Wed Aug 11 05:51:21 2010 -0700
@@ -0,0 +1,180 @@
+/*
+ * Copyright (c) 1999, 2007, 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 "incls/_precompiled.incl"
+#include "incls/_sharkContext.cpp.incl"
+
+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;
+}