diff -r 7eef4cda471c -r 4fa7845f7c14 hotspot/src/share/vm/shark/sharkNativeWrapper.hpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/shark/sharkNativeWrapper.hpp	Wed Aug 11 05:51:21 2010 -0700
@@ -0,0 +1,182 @@
+/*
+ * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2009 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.
+ *
+ */
+
+class SharkNativeWrapper : public SharkCompileInvariants {
+  friend class SharkStackWithNativeFrame;
+
+ public:
+  static SharkNativeWrapper* build(SharkBuilder* builder,
+                                   methodHandle  target,
+                                   const char*   name,
+                                   BasicType*    arg_types,
+                                   BasicType     return_type) {
+    return new SharkNativeWrapper(builder,
+                                  target,
+                                  name,
+                                  arg_types,
+                                  return_type);
+  }
+
+ private:
+  SharkNativeWrapper(SharkBuilder* builder,
+                     methodHandle  target,
+                     const char*   name,
+                     BasicType*    arg_types,
+                     BasicType     return_type)
+    : SharkCompileInvariants(NULL, builder),
+      _target(target),
+      _arg_types(arg_types),
+      _return_type(return_type),
+      _lock_slot_offset(0) { initialize(name); }
+
+ private:
+  void initialize(const char* name);
+
+ private:
+  methodHandle    _target;
+  BasicType*      _arg_types;
+  BasicType       _return_type;
+  llvm::Function* _function;
+  SharkStack*     _stack;
+  llvm::Value*    _oop_tmp_slot;
+  OopMapSet*      _oop_maps;
+  int             _receiver_slot_offset;
+  int             _lock_slot_offset;
+
+  // The method being compiled.
+ protected:
+  methodHandle target() const {
+    return _target;
+  }
+
+  // Properties of the method.
+ protected:
+  int arg_size() const {
+    return target()->size_of_parameters();
+  }
+  BasicType arg_type(int i) const {
+    return _arg_types[i];
+  }
+  BasicType return_type() const {
+    return _return_type;
+  }
+  bool is_static() const {
+    return target()->is_static();
+  }
+  bool is_synchronized() const {
+    return target()->is_synchronized();
+  }
+  bool is_returning_oop() const {
+    return target()->is_returning_oop();
+  }
+
+  // The LLVM function we are building.
+ public:
+  llvm::Function* function() const {
+    return _function;
+  }
+
+  // The Zero stack and our frame on it.
+ protected:
+  SharkStack* stack() const {
+    return _stack;
+  }
+
+  // Temporary oop storage.
+ protected:
+  llvm::Value* oop_tmp_slot() const {
+    assert(is_static() || is_returning_oop(), "should be");
+    return _oop_tmp_slot;
+  }
+
+  // Information required by nmethod::new_native_nmethod().
+ public:
+  int frame_size() const {
+    return stack()->oopmap_frame_size();
+  }
+  ByteSize receiver_offset() const {
+    return in_ByteSize(_receiver_slot_offset * wordSize);
+  }
+  ByteSize lock_offset() const {
+    return in_ByteSize(_lock_slot_offset * wordSize);
+  }
+  OopMapSet* oop_maps() const {
+    return _oop_maps;
+  }
+
+  // Helpers.
+ private:
+  llvm::BasicBlock* CreateBlock(const char* name = "") const {
+    return llvm::BasicBlock::Create(SharkContext::current(), name, function());
+  }
+  llvm::Value* thread_state_address() const {
+    return builder()->CreateAddressOfStructEntry(
+      thread(), JavaThread::thread_state_offset(),
+      llvm::PointerType::getUnqual(SharkType::jint_type()),
+      "thread_state_address");
+  }
+  llvm::Value* pending_exception_address() const {
+    return builder()->CreateAddressOfStructEntry(
+      thread(), Thread::pending_exception_offset(),
+      llvm::PointerType::getUnqual(SharkType::oop_type()),
+      "pending_exception_address");
+  }
+  void CreateSetThreadState(JavaThreadState state) const {
+    builder()->CreateStore(
+      LLVMValue::jint_constant(state), thread_state_address());
+  }
+  void CreateWriteMemorySerializePage() const {
+    builder()->CreateStore(
+      LLVMValue::jint_constant(1),
+      builder()->CreateIntToPtr(
+        builder()->CreateAdd(
+          LLVMValue::intptr_constant(
+            (intptr_t) os::get_memory_serialize_page()),
+          builder()->CreateAnd(
+            builder()->CreateLShr(
+              builder()->CreatePtrToInt(thread(), SharkType::intptr_type()),
+              LLVMValue::intptr_constant(os::get_serialize_page_shift_count())),
+            LLVMValue::intptr_constant(os::get_serialize_page_mask()))),
+        llvm::PointerType::getUnqual(SharkType::jint_type())));
+  }
+  void CreateResetHandleBlock() const {
+    llvm::Value *active_handles = builder()->CreateValueOfStructEntry(
+      thread(),
+      JavaThread::active_handles_offset(),
+      SharkType::jniHandleBlock_type(),
+      "active_handles");
+    builder()->CreateStore(
+      LLVMValue::intptr_constant(0),
+      builder()->CreateAddressOfStructEntry(
+        active_handles,
+        in_ByteSize(JNIHandleBlock::top_offset_in_bytes()),
+        llvm::PointerType::getUnqual(SharkType::intptr_type()),
+        "top"));
+  }
+  llvm::LoadInst* CreateLoadPendingException() const {
+    return builder()->CreateLoad(
+      pending_exception_address(), "pending_exception");
+  }
+};