jdk8-mips64-public/hotspot: src/cpu/zero/vm/register

     1 /*

     2  * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.

     3  * Copyright 2007 Red Hat, Inc.

     4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     5  *

     6  * This code is free software; you can redistribute it and/or modify it

     7  * under the terms of the GNU General Public License version 2 only, as

     8  * published by the Free Software Foundation.

     9  *

    10  * This code is distributed in the hope that it will be useful, but WITHOUT

    11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    13  * version 2 for more details (a copy is included in the LICENSE file that

    14  * accompanied this code).

    15  *

    16  * You should have received a copy of the GNU General Public License version

    17  * 2 along with this work; if not, write to the Free Software Foundation,

    18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    19  *

    20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    21  * or visit www.oracle.com if you need additional information or have any

    22  * questions.

    23  *

    24  */

    26 #ifndef CPU_ZERO_VM_REGISTER_ZERO_HPP

    27 #define CPU_ZERO_VM_REGISTER_ZERO_HPP

    29 #include "asm/register.hpp"

    30 #include "vm_version_zero.hpp"

    32 class VMRegImpl;

    33 typedef VMRegImpl* VMReg;

    35 // Use Register as shortcut

    36 class RegisterImpl;

    37 typedef RegisterImpl* Register;

    39 inline Register as_Register(int encoding) {

    40   return (Register)(intptr_t) encoding;

    41 }

    43 // The implementation of integer registers for the zero architecture

    44 class RegisterImpl : public AbstractRegisterImpl {

    45  public:

    46   enum {

    47     number_of_registers = 0

    48   };

    50   // construction

    51   inline friend Register as_Register(int encoding);

    52   VMReg as_VMReg();

    54   // derived registers, offsets, and addresses

    55   Register successor() const {

    56     return as_Register(encoding() + 1);

    57   }

    59   // accessors

    60   int encoding() const {

    61     assert(is_valid(), "invalid register");

    62     return (intptr_t)this;

    63   }

    64   bool is_valid() const {

    65     return 0 <= (intptr_t) this && (intptr_t)this < number_of_registers;

    66   }

    67   const char* name() const;

    68 };

    70 // Use FloatRegister as shortcut

    71 class FloatRegisterImpl;

    72 typedef FloatRegisterImpl* FloatRegister;

    74 inline FloatRegister as_FloatRegister(int encoding) {

    75   return (FloatRegister)(intptr_t) encoding;

    76 }

    78 // The implementation of floating point registers for the zero architecture

    79 class FloatRegisterImpl : public AbstractRegisterImpl {

    80  public:

    81   enum {

    82     number_of_registers = 0

    83   };

    85   // construction

    86   inline friend FloatRegister as_FloatRegister(int encoding);

    87   VMReg as_VMReg();

    89   // derived registers, offsets, and addresses

    90   FloatRegister successor() const {

    91     return as_FloatRegister(encoding() + 1);

    92   }

    94   // accessors

    95   int encoding() const {

    96     assert(is_valid(), "invalid register");

    97     return (intptr_t)this;

    98   }

    99   bool is_valid() const {

   100     return 0 <= (intptr_t) this && (intptr_t)this < number_of_registers;

   101   }

   102   const char* name() const;

   103 };

   105 class ConcreteRegisterImpl : public AbstractRegisterImpl {

   106  public:

   107   enum {

   108     number_of_registers = RegisterImpl::number_of_registers +

   109                           FloatRegisterImpl::number_of_registers

   110   };

   112   static const int max_gpr;

   113   static const int max_fpr;

   114 };

   116 CONSTANT_REGISTER_DECLARATION(Register, noreg, (-1));

   117 #ifndef DONT_USE_REGISTER_DEFINES

   118 #define noreg ((Register)(noreg_RegisterEnumValue))

   119 #endif

   121 #endif // CPU_ZERO_VM_REGISTER_ZERO_HPP

src/cpu/zero/vm/register_zero.hpp@a9becfeecd1b