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/*
* Copyright (c) 2010 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* property including but not limited to intellectual property relating
* to a hardware implementation of the functionality of the software
* licensed hereunder. You may use the software subject to the license
* terms below provided that you ensure that this notice is replicated
* unmodified and in its entirety in all distributions of the software,
* modified or unmodified, in source code or in binary form.
*
* Copyright (c) 2007-2008 The Florida State University
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Stephen Hines
*/
#ifndef __ARCH_ARM_MEM_HH__
#define __ARCH_ARM_MEM_HH__
#include "arch/arm/insts/pred_inst.hh"
namespace ArmISA
{
class Memory : public PredOp
{
public:
enum AddrMode {
AddrMd_Offset,
AddrMd_PreIndex,
AddrMd_PostIndex
};
protected:
IntRegIndex dest;
IntRegIndex base;
bool add;
Memory(const char *mnem, ExtMachInst _machInst, OpClass __opClass,
IntRegIndex _dest, IntRegIndex _base, bool _add)
: PredOp(mnem, _machInst, __opClass),
dest(_dest), base(_base), add(_add)
{}
virtual void
printOffset(std::ostream &os) const
{}
void printInst(std::ostream &os, AddrMode addrMode) const;
};
// The address is a base register plus an immediate.
class MemoryImm : public Memory
{
protected:
int32_t imm;
MemoryImm(const char *mnem, ExtMachInst _machInst, OpClass __opClass,
IntRegIndex _dest, IntRegIndex _base, bool _add, int32_t _imm)
: Memory(mnem, _machInst, __opClass, _dest, _base, _add), imm(_imm)
{}
void
printOffset(std::ostream &os) const
{
int32_t pImm = imm;
if (!add)
pImm = -pImm;
ccprintf(os, "#%d", pImm);
}
};
// The address is a shifted register plus an immediate
class MemoryReg : public Memory
{
protected:
int32_t shiftAmt;
ArmShiftType shiftType;
IntRegIndex index;
MemoryReg(const char *mnem, ExtMachInst _machInst, OpClass __opClass,
IntRegIndex _dest, IntRegIndex _base, bool _add,
int32_t _shiftAmt, ArmShiftType _shiftType,
IntRegIndex _index)
: Memory(mnem, _machInst, __opClass, _dest, _base, _add),
shiftAmt(_shiftAmt), shiftType(_shiftType), index(_index)
{}
void
printOffset(std::ostream &os) const
{
if (!add)
os << "-";
printReg(os, index);
if (shiftType != LSL || shiftAmt != 0) {
switch (shiftType) {
case LSL:
ccprintf(os, " LSL #%d", shiftAmt);
break;
case LSR:
if (shiftAmt == 0) {
ccprintf(os, " LSR #%d", 32);
} else {
ccprintf(os, " LSR #%d", shiftAmt);
}
break;
case ASR:
if (shiftAmt == 0) {
ccprintf(os, " ASR #%d", 32);
} else {
ccprintf(os, " ASR #%d", shiftAmt);
}
break;
case ROR:
if (shiftAmt == 0) {
ccprintf(os, " RRX");
} else {
ccprintf(os, " ROR #%d", shiftAmt);
}
break;
}
}
}
};
template<class Base>
class MemoryOffset : public Base
{
protected:
MemoryOffset(const char *mnem, ExtMachInst _machInst,
OpClass __opClass, IntRegIndex _dest, IntRegIndex _base,
bool _add, int32_t _imm)
: Base(mnem, _machInst, __opClass, _dest, _base, _add, _imm)
{}
MemoryOffset(const char *mnem, ExtMachInst _machInst,
OpClass __opClass, IntRegIndex _dest, IntRegIndex _base,
bool _add, int32_t _shiftAmt, ArmShiftType _shiftType,
IntRegIndex _index)
: Base(mnem, _machInst, __opClass, _dest, _base, _add,
_shiftAmt, _shiftType, _index)
{}
std::string
generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream ss;
this->printInst(ss, Memory::AddrMd_Offset);
return ss.str();
}
};
template<class Base>
class MemoryPreIndex : public Base
{
protected:
MemoryPreIndex(const char *mnem, ExtMachInst _machInst,
OpClass __opClass, IntRegIndex _dest, IntRegIndex _base,
bool _add, int32_t _imm)
: Base(mnem, _machInst, __opClass, _dest, _base, _add, _imm)
{}
MemoryPreIndex(const char *mnem, ExtMachInst _machInst,
OpClass __opClass, IntRegIndex _dest, IntRegIndex _base,
bool _add, int32_t _shiftAmt, ArmShiftType _shiftType,
IntRegIndex _index)
: Base(mnem, _machInst, __opClass, _dest, _base, _add,
_shiftAmt, _shiftType, _index)
{}
std::string
generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream ss;
this->printInst(ss, Memory::AddrMd_PreIndex);
return ss.str();
}
};
template<class Base>
class MemoryPostIndex : public Base
{
protected:
MemoryPostIndex(const char *mnem, ExtMachInst _machInst,
OpClass __opClass, IntRegIndex _dest, IntRegIndex _base,
bool _add, int32_t _imm)
: Base(mnem, _machInst, __opClass, _dest, _base, _add, _imm)
{}
MemoryPostIndex(const char *mnem, ExtMachInst _machInst,
OpClass __opClass, IntRegIndex _dest, IntRegIndex _base,
bool _add, int32_t _shiftAmt, ArmShiftType _shiftType,
IntRegIndex _index)
: Base(mnem, _machInst, __opClass, _dest, _base, _add,
_shiftAmt, _shiftType, _index)
{}
std::string
generateDisassembly(Addr pc, const SymbolTable *symtab) const
{
std::stringstream ss;
this->printInst(ss, Memory::AddrMd_PostIndex);
return ss.str();
}
};
}
#endif //__ARCH_ARM_INSTS_MEM_HH__
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