110 lines
4.5 KiB
C++
110 lines
4.5 KiB
C++
/*
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* Copyright (c) 2007-2008 The Hewlett-Packard Development Company
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* All rights reserved.
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*
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* Redistribution and use of this software in source and binary forms,
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* with or without modification, are permitted provided that the
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* following conditions are met:
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*
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* The software must be used only for Non-Commercial Use which means any
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* use which is NOT directed to receiving any direct monetary
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* compensation for, or commercial advantage from such use. Illustrative
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* examples of non-commercial use are academic research, personal study,
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* teaching, education and corporate research & development.
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* Illustrative examples of commercial use are distributing products for
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* commercial advantage and providing services using the software for
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* commercial advantage.
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*
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* If you wish to use this software or functionality therein that may be
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* covered by patents for commercial use, please contact:
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* Director of Intellectual Property Licensing
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* Office of Strategy and Technology
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* Hewlett-Packard Company
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* 1501 Page Mill Road
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* Palo Alto, California 94304
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer. Redistributions
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* in binary form must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution. Neither the name of
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* the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission. No right of
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* sublicense is granted herewith. Derivatives of the software and
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* output created using the software may be prepared, but only for
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* Non-Commercial Uses. Derivatives of the software may be shared with
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* others provided: (i) the others agree to abide by the list of
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* conditions herein which includes the Non-Commercial Use restrictions;
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* and (ii) such Derivatives of the software include the above copyright
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* notice to acknowledge the contribution from this software where
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* applicable, this list of conditions and the disclaimer below.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Gabe Black
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*/
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#ifndef __ARCH_X86_MMAPEDIPR_HH__
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#define __ARCH_X86_MMAPEDIPR_HH__
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/**
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* @file
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*
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* ISA-specific helper functions for memory mapped IPR accesses.
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*/
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#include "arch/x86/miscregs.hh"
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#include "config/full_system.hh"
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#include "cpu/base.hh"
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#include "cpu/thread_context.hh"
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#include "mem/packet.hh"
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namespace X86ISA
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{
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inline Tick
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handleIprRead(ThreadContext *xc, Packet *pkt)
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{
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#if !FULL_SYSTEM
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panic("Shouldn't have a memory mapped register in SE\n");
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#else
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Addr offset = pkt->getAddr() & mask(3);
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MiscRegIndex index = (MiscRegIndex)(pkt->getAddr() / sizeof(MiscReg));
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MiscReg data = htog(xc->readMiscReg(index));
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// Make sure we don't trot off the end of data.
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assert(offset + pkt->getSize() <= sizeof(MiscReg));
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pkt->setData(((uint8_t *)&data) + offset);
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#endif
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return xc->getCpuPtr()->ticks(1);
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}
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inline Tick
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handleIprWrite(ThreadContext *xc, Packet *pkt)
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{
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#if !FULL_SYSTEM
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panic("Shouldn't have a memory mapped register in SE\n");
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#else
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Addr offset = pkt->getAddr() & mask(3);
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MiscRegIndex index = (MiscRegIndex)(pkt->getAddr() / sizeof(MiscReg));
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MiscReg data;
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data = htog(xc->readMiscRegNoEffect(index));
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// Make sure we don't trot off the end of data.
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assert(offset + pkt->getSize() <= sizeof(MiscReg));
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pkt->writeData(((uint8_t *)&data) + offset);
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xc->setMiscReg(index, gtoh(data));
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#endif
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return xc->getCpuPtr()->ticks(1);
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}
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};
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#endif // __ARCH_X86_MMAPEDIPR_HH__
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