src/arch/mips/regfile/regfile.hh

   1 /*
   2  * Copyright (c) 2006 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  * Authors: Korey Sewell
  29  */
  30
  31 #ifndef __ARCH_MIPS_REGFILE_REGFILE_HH__
  32 #define __ARCH_MIPS_REGFILE_REGFILE_HH__
  33
  34 #include "arch/mips/types.hh"
  35 #include "arch/mips/isa_traits.hh"
  36 //#include "arch/mips/mt.hh"
  37 #include "arch/mips/regfile/int_regfile.hh"
  38 #include "arch/mips/regfile/float_regfile.hh"
  39 #include "arch/mips/regfile/misc_regfile.hh"
  40 //#include "cpu/base.hh"
  41 #include "sim/faults.hh"
  42
  43 class Checkpoint;
  44 class BaseCPU;
  45
  46 namespace MipsISA
  47 {
  48     class RegFile {
  49       protected:
  50         Addr pc;                        // program counter
  51         Addr npc;                       // next-cycle program counter
  52         Addr nnpc;                      // next-next-cycle program counter
  53                                         // used to implement branch delay slot
  54                                         // not real register
  55
  56         IntRegFile intRegFile;          // (signed) integer register file
  57         FloatRegFile floatRegFile;      // floating point register file
  58         MiscRegFile miscRegFile;        // control register file
  59
  60       public:
  61         void clear();
  62         void reset(std::string core_name, unsigned num_threads, unsigned num_vpes, BaseCPU *_cpu);
  63         MiscRegFile *getMiscRegFilePtr();
  64
  65         IntReg readIntReg(int intReg);
  66         Fault setIntReg(int intReg, const IntReg &val);
  67
  68
  69         MiscReg readMiscRegNoEffect(int miscReg, unsigned tid = 0);
  70         MiscReg readMiscReg(int miscReg, ThreadContext *tc,
  71                             unsigned tid = 0);
  72         void setMiscRegNoEffect(int miscReg, const MiscReg &val, unsigned tid = 0);
  73         void setMiscReg(int miscReg, const MiscReg &val,
  74                         ThreadContext * tc, unsigned tid = 0);
  75
  76         FloatRegVal readFloatReg(int floatReg);
  77         FloatRegVal readFloatReg(int floatReg, int width);
  78         FloatRegBits readFloatRegBits(int floatReg);
  79         FloatRegBits readFloatRegBits(int floatReg, int width);
  80         Fault setFloatReg(int floatReg, const FloatRegVal &val);
  81         Fault setFloatReg(int floatReg, const FloatRegVal &val, int width);
  82         Fault setFloatRegBits(int floatReg, const FloatRegBits &val);
  83         Fault setFloatRegBits(int floatReg, const FloatRegBits &val, int width);
  84
  85
  86         void setShadowSet(int css);
  87
  88         int instAsid();
  89         int dataAsid();
  90
  91       public:
  92         Addr readPC();
  93         void setPC(Addr val);
  94
  95         Addr readNextPC();
  96         void setNextPC(Addr val);
  97
  98         Addr readNextNPC();
  99         void setNextNPC(Addr val);
 100
 101         void serialize(std::ostream &os);
 102         void unserialize(Checkpoint *cp, const std::string &section);
 103
 104         void changeContext(RegContextParam param, RegContextVal val)
 105         {
 106         }
 107
 108     };
 109
 110 } // namespace MipsISA
 111
 112 #endif