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/*
* Copyright (c) 2007 The Hewlett-Packard Development Company
* All rights reserved.
*
* Redistribution and use of this software in source and binary forms,
* with or without modification, are permitted provided that the
* following conditions are met:
*
* The software must be used only for Non-Commercial Use which means any
* use which is NOT directed to receiving any direct monetary
* compensation for, or commercial advantage from such use. Illustrative
* examples of non-commercial use are academic research, personal study,
* teaching, education and corporate research & development.
* Illustrative examples of commercial use are distributing products for
* commercial advantage and providing services using the software for
* commercial advantage.
*
* If you wish to use this software or functionality therein that may be
* covered by patents for commercial use, please contact:
* Director of Intellectual Property Licensing
* Office of Strategy and Technology
* Hewlett-Packard Company
* 1501 Page Mill Road
* Palo Alto, California 94304
*
* 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 HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission. No right of
* sublicense is granted herewith. Derivatives of the software and
* output created using the software may be prepared, but only for
* Non-Commercial Uses. Derivatives of the software may be shared with
* others provided: (i) the others agree to abide by the list of
* conditions herein which includes the Non-Commercial Use restrictions;
* and (ii) such Derivatives of the software include the above copyright
* notice to acknowledge the contribution from this software where
* applicable, this list of conditions and the disclaimer below.
*
* 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: Gabe Black
*/
#ifndef __ARCH_X86_INSTS_MICROLDSTOP_HH__
#define __ARCH_X86_INSTS_MICROLDSTOP_HH__
#include "arch/x86/insts/microop.hh"
#include "mem/packet.hh"
#include "mem/request.hh"
namespace X86ISA
{
static const Request::FlagsType SegmentFlagMask = mask(4);
static const int FlagShift = 4;
enum FlagBit {
CPL0FlagBit = 1,
AddrSizeFlagBit = 2
};
/**
* Base class for load and store ops
*/
class LdStOp : public X86MicroopBase
{
protected:
const uint8_t scale;
const RegIndex index;
const RegIndex base;
const uint64_t disp;
const uint8_t segment;
const RegIndex data;
const uint8_t dataSize;
const uint8_t addressSize;
const Request::FlagsType memFlags;
RegIndex foldOBit, foldABit;
//Constructor
LdStOp(ExtMachInst _machInst,
const char * mnem, const char * _instMnem,
bool isMicro, bool isDelayed, bool isFirst, bool isLast,
uint8_t _scale, RegIndex _index, RegIndex _base,
uint64_t _disp, uint8_t _segment,
RegIndex _data,
uint8_t _dataSize, uint8_t _addressSize,
Request::FlagsType _memFlags,
OpClass __opClass) :
X86MicroopBase(machInst, mnem, _instMnem,
isMicro, isDelayed, isFirst, isLast, __opClass),
scale(_scale), index(_index), base(_base),
disp(_disp), segment(_segment),
data(_data),
dataSize(_dataSize), addressSize(_addressSize),
memFlags(_memFlags | _segment)
{
foldOBit = (dataSize == 1 && !_machInst.rex.present) ? 1 << 6 : 0;
foldABit =
(addressSize == 1 && !_machInst.rex.present) ? 1 << 6 : 0;
}
std::string generateDisassembly(Addr pc,
const SymbolTable *symtab) const;
template<class Context, class MemType>
Fault read(Context *xc, Addr EA, MemType & Mem, unsigned flags) const
{
Fault fault = NoFault;
switch(dataSize)
{
case 1:
fault = xc->read(EA, (uint8_t&)Mem, flags);
break;
case 2:
fault = xc->read(EA, (uint16_t&)Mem, flags);
break;
case 4:
fault = xc->read(EA, (uint32_t&)Mem, flags);
break;
case 8:
fault = xc->read(EA, (uint64_t&)Mem, flags);
break;
default:
panic("Bad operand size %d for read at %#x.\n", dataSize, EA);
}
return fault;
}
template<class Context, class MemType>
Fault write(Context *xc, MemType & Mem, Addr EA, unsigned flags) const
{
Fault fault = NoFault;
switch(dataSize)
{
case 1:
fault = xc->write((uint8_t&)Mem, EA, flags, 0);
break;
case 2:
fault = xc->write((uint16_t&)Mem, EA, flags, 0);
break;
case 4:
fault = xc->write((uint32_t&)Mem, EA, flags, 0);
break;
case 8:
fault = xc->write((uint64_t&)Mem, EA, flags, 0);
break;
default:
panic("Bad operand size %d for write at %#x.\n", dataSize, EA);
}
return fault;
}
uint64_t
get(PacketPtr pkt) const
{
switch(dataSize)
{
case 1:
return pkt->get<uint8_t>();
case 2:
return pkt->get<uint16_t>();
case 4:
return pkt->get<uint32_t>();
case 8:
return pkt->get<uint64_t>();
default:
panic("Bad operand size %d for read at %#x.\n",
dataSize, pkt->getAddr());
}
}
};
}
#endif //__ARCH_X86_INSTS_MICROLDSTOP_HH__
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