hotspot/src/cpu/sparc/vm/register_sparc.cpp
author twisti
Fri, 13 Feb 2009 09:09:35 -0800
changeset 2031 24e034f56dcb
parent 1 489c9b5090e2
child 5547 f4b087cbb361
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 2000-2007 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.
 *
 */

#include "incls/_precompiled.incl"
#include "incls/_register_sparc.cpp.incl"

const int ConcreteRegisterImpl::max_gpr = RegisterImpl::number_of_registers << 1;
const int ConcreteRegisterImpl::max_fpr =  ConcreteRegisterImpl::max_gpr + FloatRegisterImpl::number_of_registers;

const char* RegisterImpl::name() const {
  const char* names[number_of_registers] = {
    "G0", "G1", "G2", "G3", "G4", "G5", "G6", "G7",
    "O0", "O1", "O2", "O3", "O4", "O5", "SP", "O7",
    "L0", "L1", "L2", "L3", "L4", "L5", "L6", "L7",
    "I0", "I1", "I2", "I3", "I4", "I5", "FP", "I7"
  };
  return is_valid() ? names[encoding()] : "noreg";
}


const char* FloatRegisterImpl::name() const {
  const char* names[number_of_registers] = {
    "F0",  "F1",   "F2",  "F3",   "F4",  "F5",   "F6",  "F7",   "F8",  "F9",
    "F10", "F11",  "F12", "F13",  "F14", "F15",  "F16", "F17",  "F18", "F19",
    "F20", "F21",  "F22", "F23",  "F24", "F25",  "F26", "F27",  "F28", "F29",
    "F30", "F31",  "F32", "F33?", "F34", "F35?", "F36", "F37?", "F38", "F39?",
    "F40", "F41?", "F42", "F43?", "F44", "F45?", "F46", "F47?", "F48", "F49?",
    "F50", "F51?", "F52", "F53?", "F54", "F55?", "F56", "F57?", "F58", "F59?",
    "F60", "F61?", "F62"
  };
  return is_valid() ? names[encoding()] : "fnoreg";
}