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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_MACROMEM_HH__
#define __ARCH_ARM_MACROMEM_HH__
#include "arch/arm/insts/pred_inst.hh"
#include "arch/arm/tlb.hh"
namespace ArmISA
{
static inline unsigned int
number_of_ones(int32_t val)
{
uint32_t ones = 0;
for (int i = 0; i < 32; i++ )
{
if ( val & (1<<i) )
ones++;
}
return ones;
}
/**
* Base class for Memory microops
*/
class MicroOp : public PredOp
{
protected:
MicroOp(const char *mnem, ExtMachInst machInst, OpClass __opClass)
: PredOp(mnem, machInst, __opClass)
{
}
public:
void
setDelayedCommit()
{
flags[IsDelayedCommit] = true;
}
};
/**
* Microops of the form IntRegA = IntRegB op Imm
*/
class MicroIntOp : public MicroOp
{
protected:
RegIndex ura, urb;
uint8_t imm;
MicroIntOp(const char *mnem, ExtMachInst machInst, OpClass __opClass,
RegIndex _ura, RegIndex _urb, uint8_t _imm)
: MicroOp(mnem, machInst, __opClass),
ura(_ura), urb(_urb), imm(_imm)
{
}
std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const;
};
/**
* Memory microops which use IntReg + Imm addressing
*/
class MicroMemOp : public MicroIntOp
{
protected:
bool up;
unsigned memAccessFlags;
MicroMemOp(const char *mnem, ExtMachInst machInst, OpClass __opClass,
RegIndex _ura, RegIndex _urb, bool _up, uint8_t _imm)
: MicroIntOp(mnem, machInst, __opClass, _ura, _urb, _imm),
up(_up), memAccessFlags(TLB::MustBeOne | TLB::AlignWord)
{
}
std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const;
};
/**
* Base class for microcoded integer memory instructions.
*/
class MacroMemOp : public PredMacroOp
{
protected:
MacroMemOp(const char *mnem, ExtMachInst machInst, OpClass __opClass,
IntRegIndex rn, bool index, bool up, bool user,
bool writeback, bool load, uint32_t reglist);
};
/**
* Base class for microcoded floating point memory instructions.
*/
class MacroVFPMemOp : public PredMacroOp
{
protected:
MacroVFPMemOp(const char *mnem, ExtMachInst machInst, OpClass __opClass,
IntRegIndex rn, RegIndex vd, bool single, bool up,
bool writeback, bool load, uint32_t offset);
};
}
#endif //__ARCH_ARM_INSTS_MACROMEM_HH__
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