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
  29 #ifndef __ARCH_POWER_MEM_HH__
  30 #define __ARCH_POWER_MEM_HH__
  31
  32 #include "arch/power/insts/static_inst.hh"
  33
  34 namespace PowerISA
  35 {
  36
  37 /**
  38  * Base class for memory operations.
  39  */
  40 class MemOp : public PowerStaticInst
  41 {
  42   protected:
  43
  44     /// Memory request flags.  See mem_req_base.hh.
  45     unsigned memAccessFlags;
  46
  47     /// Constructor
  48     MemOp(const char *mnem, MachInst _machInst, OpClass __opClass)
  49       : PowerStaticInst(mnem, _machInst, __opClass),
  50         memAccessFlags(0)
  51     {
  52     }
  53
  54     std::string generateDisassembly(
  55             Addr pc, const Loader::SymbolTable *symtab) const override;
  56 };
  57
  58
  59 /**
  60  * Class for memory operations with displacement.
  61  */
  62 class MemDispOp : public MemOp
  63 {
  64   protected:
  65
  66     int16_t disp;
  67
  68     /// Constructor
  69     MemDispOp(const char *mnem, MachInst _machInst, OpClass __opClass)
  70       : MemOp(mnem, _machInst, __opClass), disp(machInst.d)
  71     {
  72     }
  73
  74     std::string generateDisassembly(
  75             Addr pc, const Loader::SymbolTable *symtab) const override;
  76 };
  77
  78 /**
  79  * Class for memory operations with shifted displacement.
  80  */
  81 class MemDispShiftOp : public MemOp
  82 {
  83   protected:
  84
  85     int16_t disp;
  86
  87     /// Constructor
  88     MemDispShiftOp(const char *mnem, MachInst _machInst, OpClass __opClass)
  89       : MemOp(mnem, _machInst, __opClass),
  90         disp(sext<14>(machInst.ds))
  91     {
  92     }
  93
  94     std::string generateDisassembly(
  95             Addr pc, const Loader::SymbolTable *symtab) const override;
  96 };
  97
  98
  99 /**
 100  * Class for memory operations with register indexed addressing.
 101  */
 102 class MemIndexOp : public MemOp
 103 {
 104   protected:
 105
 106     /// Constructor
 107     MemIndexOp(const char *mnem, MachInst _machInst, OpClass __opClass)
 108       : MemOp(mnem, _machInst, __opClass)
 109     {
 110     }
 111
 112     std::string generateDisassembly(
 113             Addr pc, const Loader::SymbolTable *symtab) const override;
 114 };
 115
 116 } // namespace PowerISA
 117
 118 #endif //__ARCH_POWER_INSTS_MEM_HH__