1 /*
   2  * Copyright (c) 2008, 2014, 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 #ifndef CPU_ARM_VM_VMREG_ARM_HPP
  26 #define CPU_ARM_VM_VMREG_ARM_HPP
  27 
  28   inline bool is_Register() {
  29     return (unsigned int) value() < (unsigned int) ConcreteRegisterImpl::max_gpr;
  30   }
  31 
  32   inline bool is_FloatRegister() {
  33     return value() >= ConcreteRegisterImpl::max_gpr && value() < ConcreteRegisterImpl::max_fpr;
  34   }
  35 
  36   inline Register as_Register() {
  37     assert(is_Register(), "must be");
  38     assert(is_concrete(), "concrete register expected");
  39     return ::as_Register(value() >> ConcreteRegisterImpl::log_vmregs_per_gpr);
  40   }
  41 
  42   inline FloatRegister as_FloatRegister() {
  43     assert(is_FloatRegister(), "must be");
  44     assert(is_concrete(), "concrete register expected");
  45     return ::as_FloatRegister((value() - ConcreteRegisterImpl::max_gpr) >> ConcreteRegisterImpl::log_vmregs_per_fpr);
  46   }
  47 
  48   inline bool is_concrete() {
  49     if (is_Register()) {
  50       return ((value() & right_n_bits(ConcreteRegisterImpl::log_vmregs_per_gpr)) == 0);
  51     } else if (is_FloatRegister()) {
  52       return (((value() - ConcreteRegisterImpl::max_gpr) & right_n_bits(ConcreteRegisterImpl::log_vmregs_per_fpr)) == 0);
  53     } else {
  54       return false;
  55     }
  56   }
  57 
  58 #endif // CPU_ARM_VM_VMREG_ARM_HPP