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