src/arch/sparc/regfile.hh

   1 /*
   2  * Copyright (c) 2003-2005 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  * Authors: Gabe Black
  29  *          Ali Saidi
  30  */
  31
  32 #ifndef __ARCH_SPARC_REGFILE_HH__
  33 #define __ARCH_SPARC_REGFILE_HH__
  34
  35 #include "arch/sparc/faults.hh"
  36 #include "arch/sparc/floatregfile.hh"
  37 #include "arch/sparc/intregfile.hh"
  38 #include "arch/sparc/isa_traits.hh"
  39 #include "arch/sparc/miscregfile.hh"
  40 #include "arch/sparc/types.hh"
  41 #include "sim/host.hh"
  42
  43 #include <string>
  44
  45 class Checkpoint;
  46
  47 namespace SparcISA
  48 {
  49     class RegFile
  50     {
  51       protected:
  52         Addr pc;                // Program Counter
  53         Addr npc;               // Next Program Counter
  54         Addr nnpc;
  55
  56       public:
  57         Addr readPC();
  58         void setPC(Addr val);
  59
  60         Addr readNextPC();
  61         void setNextPC(Addr val);
  62
  63         Addr readNextNPC();
  64         void setNextNPC(Addr val);
  65
  66       protected:
  67         IntRegFile intRegFile;          // integer register file
  68         FloatRegFile floatRegFile;      // floating point register file
  69         MiscRegFile miscRegFile;        // control register file
  70
  71       public:
  72
  73         void clear();
  74
  75         int FlattenIntIndex(int reg);
  76
  77         MiscReg readMiscReg(int miscReg);
  78
  79         MiscReg readMiscRegWithEffect(int miscReg,
  80                 Fault &fault, ThreadContext *tc);
  81
  82         Fault setMiscReg(int miscReg, const MiscReg &val);
  83
  84         Fault setMiscRegWithEffect(int miscReg, const MiscReg &val,
  85                 ThreadContext * tc);
  86
  87         FloatReg readFloatReg(int floatReg, int width);
  88
  89         FloatReg readFloatReg(int floatReg);
  90
  91         FloatRegBits readFloatRegBits(int floatReg, int width);
  92
  93         FloatRegBits readFloatRegBits(int floatReg);
  94
  95         Fault setFloatReg(int floatReg, const FloatReg &val, int width);
  96
  97         Fault setFloatReg(int floatReg, const FloatReg &val);
  98
  99         Fault setFloatRegBits(int floatReg, const FloatRegBits &val, int width);
 100
 101         Fault setFloatRegBits(int floatReg, const FloatRegBits &val);
 102
 103         IntReg readIntReg(int intReg);
 104
 105         Fault setIntReg(int intReg, const IntReg &val);
 106
 107         void serialize(std::ostream &os);
 108         void unserialize(Checkpoint *cp, const std::string &section);
 109
 110       public:
 111
 112         void changeContext(RegContextParam param, RegContextVal val);
 113     };
 114
 115     void copyRegs(ThreadContext *src, ThreadContext *dest);
 116
 117     void copyMiscRegs(ThreadContext *src, ThreadContext *dest);
 118
 119     int InterruptLevel(uint64_t softint);
 120
 121 } // namespace SparcISA
 122
 123 #endif