--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/graal/graalEnv.hpp	Tue Nov 15 21:15:26 2011 +0100
@@ -0,0 +1,141 @@
+/*
+ * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
+ * 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.
+ *
+ */
+
+#ifndef SHARE_VM_GRAAL_GRAALENV_HPP
+#define SHARE_VM_GRAAL_GRAALENV_HPP
+
+#include "classfile/systemDictionary.hpp"
+#include "code/debugInfoRec.hpp"
+#include "code/dependencies.hpp"
+#include "code/exceptionHandlerTable.hpp"
+#include "compiler/oopMap.hpp"
+#include "runtime/thread.hpp"
+
+class CompileTask;
+
+// ciEnv
+//
+// This class is the top level broker for requests from the compiler
+// to the VM.
+class GraalEnv : AllStatic {
+  CI_PACKAGE_ACCESS_TO
+
+  friend class CompileBroker;
+  friend class Dependencies;  // for get_object, during logging
+
+public:
+
+  // Look up a klass by name from a particular class loader (the accessor's).
+  // If require_local, result must be defined in that class loader, or NULL.
+  // If !require_local, a result from remote class loader may be reported,
+  // if sufficient class loader constraints exist such that initiating
+  // a class loading request from the given loader is bound to return
+  // the class defined in the remote loader (or throw an error).
+  //
+  // Return an unloaded klass if !require_local and no class at all is found.
+  //
+  // The CI treats a klass as loaded if it is consistently defined in
+  // another loader, even if it hasn't yet been loaded in all loaders
+  // that could potentially see it via delegation.
+  static KlassHandle get_klass_by_name(KlassHandle accessing_klass,
+                             Symbol* klass_name,
+                             bool require_local);
+
+  // Constant pool access.
+  static KlassHandle   get_klass_by_index(constantPoolHandle cpool,
+                                int klass_index,
+                                bool& is_accessible,
+                                KlassHandle loading_klass);
+  static void   get_field_by_index(instanceKlassHandle loading_klass, fieldDescriptor& fd,
+                                int field_index);
+  static methodHandle  get_method_by_index(constantPoolHandle cpool,
+                                 int method_index, Bytecodes::Code bc,
+                                 instanceKlass* loading_klass);
+
+private:
+
+  // Implementation methods for loading and constant pool access.
+  static klassOop get_klass_by_name_impl(KlassHandle accessing_klass,
+                                  constantPoolHandle cpool,
+                                  Symbol* klass_name,
+                                  bool require_local);
+  static klassOop   get_klass_by_index_impl(constantPoolHandle cpool,
+                                     int klass_index,
+                                     bool& is_accessible,
+                                     KlassHandle loading_klass);
+  static void   get_field_by_index_impl(instanceKlassHandle loading_klass, fieldDescriptor& fd,
+                                     int field_index);
+  static methodHandle  get_method_by_index_impl(constantPoolHandle cpool,
+                                      int method_index, Bytecodes::Code bc,
+                                      instanceKlass* loading_klass);
+
+  // Helper methods
+  static bool       check_klass_accessibility(klassOop accessing_klass, klassOop resolved_klassOop);
+  static methodOop  lookup_method(instanceKlass*  accessor,
+                           instanceKlass*  holder,
+                           Symbol*         name,
+                           Symbol*         sig,
+                           Bytecodes::Code bc);
+
+  private:
+
+  // Is this thread currently in the VM state?
+  static bool is_in_vm();
+
+  // Helper routine for determining the validity of a compilation
+  // with respect to concurrent class loading.
+  static bool check_for_system_dictionary_modification(Dependencies* target);
+
+public:
+  // Register the result of a compilation.
+  static nmethod* register_method(methodHandle             target,
+                       int                       entry_bci,
+                       CodeOffsets*              offsets,
+                       int                       orig_pc_offset,
+                       CodeBuffer*               code_buffer,
+                       int                       frame_words,
+                       OopMapSet*                oop_map_set,
+                       ExceptionHandlerTable*    handler_table,
+                       ImplicitExceptionTable*   inc_table,
+                       AbstractCompiler*         compiler,
+                       DebugInformationRecorder* debug_info,
+                       Dependencies*             dependencies,
+                       CompileTask*              task,
+                       int                       compile_id,
+                       bool                      has_debug_info = true,
+                       bool                      has_unsafe_access = false,
+                       bool                      install_code = true);
+
+  static ciKlass*  find_system_klass(ciSymbol* klass_name);
+  // Note:  To find a class from its name string, use ciSymbol::make,
+  // but consider adding to vmSymbols.hpp instead.
+
+  // converts the ciKlass* representing the holder of a method into a
+  // ciInstanceKlass*.  This is needed since the holder of a method in
+  // the bytecodes could be an array type.  Basically this converts
+  // array types into java/lang/Object and other types stay as they are.
+  static instanceKlass* get_instance_klass_for_declared_method_holder(KlassHandle klass);
+};
+
+#endif // SHARE_VM_GRAAL_GRAALENV_HPP