cpu/beta_cpu/alpha_impl.hh

   1 /*
   2  * Copyright (c) 2004-2005 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #ifndef __CPU_BETA_CPU_ALPHA_IMPL_HH__
  30 #define __CPU_BETA_CPU_ALPHA_IMPL_HH__
  31
  32 #include "arch/alpha/isa_traits.hh"
  33
  34 #include "cpu/beta_cpu/alpha_params.hh"
  35 #include "cpu/beta_cpu/cpu_policy.hh"
  36
  37 // Forward declarations.
  38 template <class Impl>
  39 class AlphaDynInst;
  40
  41 template <class Impl>
  42 class AlphaFullCPU;
  43
  44 /** Implementation specific struct that defines several key things to the
  45  *  CPU, the stages within the CPU, the time buffers, and the DynInst.
  46  *  The struct defines the ISA, the CPU policy, the specific DynInst, the
  47  *  specific FullCPU, and all of the structs from the time buffers to do
  48  *  communication.
  49  *  This is one of the key things that must be defined for each hardware
  50  *  specific CPU implementation.
  51  */
  52 struct AlphaSimpleImpl
  53 {
  54     /** The ISA to be used. */
  55     typedef AlphaISA ISA;
  56
  57     /** The type of MachInst. */
  58     typedef ISA::MachInst MachInst;
  59
  60     /** The CPU policy to be used (ie fetch, decode, etc.). */
  61     typedef SimpleCPUPolicy<AlphaSimpleImpl> CPUPol;
  62
  63     /** The DynInst to be used. */
  64     typedef AlphaDynInst<AlphaSimpleImpl> DynInst;
  65
  66     /** The refcounted DynInst pointer to be used.  In most cases this is
  67      *  what should be used, and not DynInst *.
  68      */
  69     typedef RefCountingPtr<DynInst> DynInstPtr;
  70
  71     /** The FullCPU to be used. */
  72     typedef AlphaFullCPU<AlphaSimpleImpl> FullCPU;
  73
  74     /** The Params to be passed to each stage. */
  75     typedef AlphaSimpleParams Params;
  76
  77     enum {
  78         MaxWidth = 8
  79     };
  80 };
  81
  82 #endif // __CPU_BETA_CPU_ALPHA_IMPL_HH__