src/arch/arm/misc_regfile.hh

   1 /*
   2  * Copyright (c) 2007-2008 The Florida State University
   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  * Authors: Stephen Hines
  29  */
  30
  31 #ifndef __ARCH_ARM_REGFILE_MISC_REGFILE_HH__
  32 #define __ARCH_ARM_REGFILE_MISC_REGFILE_HH__
  33
  34 #include "arch/arm/isa_traits.hh"
  35 #include "arch/arm/miscregs.hh"
  36 #include "arch/arm/types.hh"
  37 #include "sim/faults.hh"
  38
  39 class ThreadContext;
  40
  41 namespace ArmISA
  42 {
  43     const int NumMiscRegs = NUM_MISCREGS;
  44
  45     static inline std::string getMiscRegName(RegIndex)
  46     {
  47         return "";
  48     }
  49
  50     class MiscRegFile {
  51
  52       protected:
  53         MiscReg miscRegFile[NumMiscRegs];
  54
  55       public:
  56         void clear()
  57         {
  58             // Unknown startup state in misc register file currently
  59         }
  60
  61         void copyMiscRegs(ThreadContext *tc);
  62
  63         MiscReg readRegNoEffect(int misc_reg)
  64         {
  65             assert(misc_reg < NumMiscRegs);
  66             return miscRegFile[misc_reg];
  67         }
  68
  69         MiscReg readReg(int misc_reg, ThreadContext *tc)
  70         {
  71             assert(misc_reg < NumMiscRegs);
  72             return miscRegFile[misc_reg];
  73         }
  74
  75         void setRegNoEffect(int misc_reg, const MiscReg &val)
  76         {
  77             assert(misc_reg < NumMiscRegs);
  78             miscRegFile[misc_reg] = val;
  79         }
  80
  81         void setReg(int misc_reg, const MiscReg &val,
  82                                ThreadContext *tc)
  83         {
  84             assert(misc_reg < NumMiscRegs);
  85             miscRegFile[misc_reg] = val;
  86         }
  87     };
  88 } // namespace ArmISA
  89
  90 #endif