src/arch/null/registers.hh

   1 /*
   2  * Copyright (c) 2013 ARM Limited
   3  * All rights reserved
   4  *
   5  * The license below extends only to copyright in the software and shall
   6  * not be construed as granting a license to any other intellectual
   7  * property including but not limited to intellectual property relating
   8  * to a hardware implementation of the functionality of the software
   9  * licensed hereunder.  You may use the software subject to the license
  10  * terms below provided that you ensure that this notice is replicated
  11  * unmodified and in its entirety in all distributions of the software,
  12  * modified or unmodified, in source code or in binary form.
  13  *
  14  * Redistribution and use in source and binary forms, with or without
  15  * modification, are permitted provided that the following conditions are
  16  * met: redistributions of source code must retain the above copyright
  17  * notice, this list of conditions and the following disclaimer;
  18  * redistributions in binary form must reproduce the above copyright
  19  * notice, this list of conditions and the following disclaimer in the
  20  * documentation and/or other materials provided with the distribution;
  21  * neither the name of the copyright holders nor the names of its
  22  * contributors may be used to endorse or promote products derived from
  23  * this software without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  26  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  27  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  28  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  29  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  30  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  31  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  32  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  33  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  34  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  35  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  36  *
  37  * Authors: Andreas Hansson
  38  */
  39
  40 #ifndef __ARCH_NULL_REGISTERS_HH__
  41 #define __ARCH_NULL_REGISTERS_HH__
  42
  43 #include "arch/generic/vec_reg.hh"
  44 #include "arch/types.hh"
  45 #include "base/types.hh"
  46
  47 namespace NullISA {
  48
  49 typedef RegVal IntReg;
  50 typedef RegVal FloatRegBits;
  51 typedef FloatRegVal FloatReg;
  52 typedef uint8_t CCReg;
  53 typedef RegVal MiscReg;
  54 const RegIndex ZeroReg = 0;
  55
  56 // dummy typedefs since we don't have vector regs
  57 constexpr unsigned NumVecElemPerVecReg = 2;
  58 using VecElem = uint32_t;
  59 using VecReg = ::VecRegT<VecElem, NumVecElemPerVecReg, false>;
  60 using ConstVecReg = ::VecRegT<VecElem, NumVecElemPerVecReg, true>;
  61 using VecRegContainer = VecReg::Container;
  62 // This has to be one to prevent warnings that are treated as errors
  63 constexpr unsigned NumVecRegs = 1;
  64
  65 }
  66
  67 #endif // __ARCH_NULL_REGISTERS_HH__