src/arch/power/insts/mem.hh

   1 /*
   2  * Copyright (c) 2009 The University of Edinburgh
   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: Timothy M. Jones
  29  */
  30
  31 #ifndef __ARCH_POWER_MEM_HH__
  32 #define __ARCH_POWER_MEM_HH__
  33
  34 #include "arch/power/insts/static_inst.hh"
  35
  36 namespace PowerISA
  37 {
  38
  39 /**
  40  * Base class for memory operations.
  41  */
  42 class MemOp : public PowerStaticInst
  43 {
  44   protected:
  45
  46     /// Memory request flags.  See mem_req_base.hh.
  47     unsigned memAccessFlags;
  48     /// Pointer to EAComp object.
  49     const StaticInstPtr eaCompPtr;
  50     /// Pointer to MemAcc object.
  51     const StaticInstPtr memAccPtr;
  52
  53     /// Constructor
  54     MemOp(const char *mnem, MachInst _machInst, OpClass __opClass,
  55           StaticInstPtr _eaCompPtr = nullStaticInstPtr,
  56           StaticInstPtr _memAccPtr = nullStaticInstPtr)
  57       : PowerStaticInst(mnem, _machInst, __opClass),
  58         memAccessFlags(0),
  59         eaCompPtr(_eaCompPtr),
  60         memAccPtr(_memAccPtr)
  61     {
  62     }
  63
  64     std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const;
  65 };
  66
  67
  68 /**
  69  * Class for memory operations with displacement.
  70  */
  71 class MemDispOp : public MemOp
  72 {
  73   protected:
  74
  75     int16_t disp;
  76
  77     /// Constructor
  78     MemDispOp(const char *mnem, MachInst _machInst, OpClass __opClass,
  79               StaticInstPtr _eaCompPtr = nullStaticInstPtr,
  80               StaticInstPtr _memAccPtr = nullStaticInstPtr)
  81       : MemOp(mnem, _machInst, __opClass, _eaCompPtr, _memAccPtr),
  82         disp(machInst.d)
  83     {
  84     }
  85
  86     std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const;
  87 };
  88
  89 } // namespace PowerISA
  90
  91 #endif //__ARCH_POWER_INSTS_MEM_HH__