view src/cpu/zero/vm/cppInterpreter_zero.hpp @ 1256:c09ee209b65c

6926048: Improve Zero performance Summary: Make Zero figure out result types in a similar way to C++ interpreter implementation. Reviewed-by: kvn Contributed-by: gbenson@redhat.com
author kvn
date Fri, 12 Feb 2010 10:34:11 -0800
parents 354d3184f6b2
children f9271ff9d324
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/*
 * Copyright 1997-2007 Sun Microsystems, Inc.  All Rights Reserved.
 * Copyright 2007, 2008, 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *
 */

 protected:
  // Size of interpreter code
  const static int InterpreterCodeSize = 6 * K;

 public:
  // Method entries
  static void normal_entry(methodOop method, intptr_t UNUSED, TRAPS);
  static void native_entry(methodOop method, intptr_t UNUSED, TRAPS);
  static void accessor_entry(methodOop method, intptr_t UNUSED, TRAPS);
  static void empty_entry(methodOop method, intptr_t UNUSED, TRAPS);

 public:
  // Main loop of normal_entry
  static void main_loop(int recurse, TRAPS);

 private:
  // Stack overflow checks
  static bool stack_overflow_imminent(JavaThread *thread);

 private:
  // Fast result type determination
  static BasicType result_type_of(methodOop method);