1 /*
   2  * Copyright (c) 2006, 2007, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 inline VMReg RegisterImpl::as_VMReg() {
  26   if( this==noreg ) return VMRegImpl::Bad();
  27   return VMRegImpl::as_VMReg(encoding() << 1 );
  28 }
  29 
  30 inline VMReg FloatRegisterImpl::as_VMReg() { return VMRegImpl::as_VMReg( ConcreteRegisterImpl::max_gpr + encoding() ); }
  31 
  32 
  33 inline bool VMRegImpl::is_Register() { return value() >= 0 && value() < ConcreteRegisterImpl::max_gpr; }
  34 inline bool VMRegImpl::is_FloatRegister() { return value() >= ConcreteRegisterImpl::max_gpr &&
  35                                                    value() < ConcreteRegisterImpl::max_fpr; }
  36 inline Register VMRegImpl::as_Register() {
  37 
  38   assert( is_Register() && is_even(value()), "even-aligned GPR name" );
  39   // Yuk
  40   return ::as_Register(value()>>1);
  41 }
  42 
  43 inline FloatRegister VMRegImpl::as_FloatRegister() {
  44   assert( is_FloatRegister(), "must be" );
  45   // Yuk
  46   return ::as_FloatRegister( value() - ConcreteRegisterImpl::max_gpr );
  47 }
  48 
  49 inline   bool VMRegImpl::is_concrete() {
  50   assert(is_reg(), "must be");
  51   int v = value();
  52   if ( v  <  ConcreteRegisterImpl::max_gpr ) {
  53     return is_even(v);
  54   }
  55   // F0..F31
  56   if ( v <= ConcreteRegisterImpl::max_gpr + 31) return true;
  57   if ( v <  ConcreteRegisterImpl::max_fpr) {
  58     return is_even(v);
  59   }
  60   assert(false, "what register?");
  61   return false;
  62 }