hotspot/src/cpu/sparc/vm/cppInterpreter_sparc.hpp
author twisti
Fri, 13 Feb 2009 09:09:35 -0800
changeset 2031 24e034f56dcb
parent 1 489c9b5090e2
child 5419 f2e8cc8c12ea
permissions -rw-r--r--
6800154: Add comments to long_by_long_mulhi() for better understandability Summary: This patch adds a comment pointing to the Hacker's Delight version of the algorithm plus a verbatim copy of it. Furthermore it adds inline comments. Reviewed-by: kvn, jrose

/*
 * Copyright 2002 Sun Microsystems, Inc.  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 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.
 *
 */

  // Size of interpreter code.  Increase if too small.  Interpreter will
  // fail with a guarantee ("not enough space for interpreter generation");
  // if too small.
  // Run with +PrintInterpreter to get the VM to print out the size.
  // Max size with JVMTI and TaggedStackInterpreter

  // QQQ this is proably way too large for c++ interpreter

#ifdef _LP64
  // The sethi() instruction generates lots more instructions when shell
  // stack limit is unlimited, so that's why this is much bigger.
  const static int InterpreterCodeSize = 210 * K;
#else
  const static int InterpreterCodeSize = 180 * K;
#endif