3a1428365a
readBytes and writeBytes had the word "bytes" in their names because they accessed blobs of bytes. This distinguished them from the read and write functions which handled higher level data types. Because those functions don't exist any more, this change renames readBytes and writeBytes to more general names, readMem and writeMem, which reflect the fact that they are how you read and write memory. This also makes their names more consistent with the register reading/writing functions, although those are still read and set for some reason.
121 lines
3.7 KiB
C++
121 lines
3.7 KiB
C++
/*
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* Copyright (c) 2011 Google
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders 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.
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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_MEMHELPERS_HH__
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#define __ARCH_X86_MEMHELPERS_HH__
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#include "base/types.hh"
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#include "sim/byteswap.hh"
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#include "sim/fault_fwd.hh"
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#include "sim/insttracer.hh"
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namespace X86ISA
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{
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template <class XC>
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Fault
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readMemTiming(XC *xc, Trace::InstRecord *traceData, Addr addr,
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uint64_t &mem, unsigned dataSize, unsigned flags)
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{
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return xc->readMem(addr, (uint8_t *)&mem, dataSize, flags);
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}
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static inline uint64_t
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getMem(PacketPtr pkt, unsigned dataSize, Trace::InstRecord *traceData)
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{
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uint64_t mem;
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switch (dataSize) {
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case 1:
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mem = pkt->get<uint8_t>();
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break;
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case 2:
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mem = pkt->get<uint16_t>();
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break;
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case 4:
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mem = pkt->get<uint32_t>();
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break;
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case 8:
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mem = pkt->get<uint64_t>();
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break;
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default:
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panic("Unhandled size in getMem.\n");
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}
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if (traceData)
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traceData->setData(mem);
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return mem;
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}
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template <class XC>
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Fault
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readMemAtomic(XC *xc, Trace::InstRecord *traceData, Addr addr, uint64_t &mem,
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unsigned dataSize, unsigned flags)
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{
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memset(&mem, 0, sizeof(mem));
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Fault fault = readMemTiming(xc, traceData, addr, mem, dataSize, flags);
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if (fault == NoFault) {
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// If LE to LE, this is a nop, if LE to BE, the actual data ends up
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// in the right place because the LSBs where at the low addresses on
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// access. This doesn't work for BE guests.
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mem = gtoh(mem);
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if (traceData)
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traceData->setData(mem);
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}
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return fault;
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}
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template <class XC>
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Fault
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writeMemTiming(XC *xc, Trace::InstRecord *traceData, uint64_t mem,
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unsigned dataSize, Addr addr, unsigned flags, uint64_t *res)
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{
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if (traceData) {
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traceData->setData(mem);
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}
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mem = TheISA::htog(mem);
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return xc->writeMem((uint8_t *)&mem, dataSize, addr, flags, res);
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}
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template <class XC>
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Fault
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writeMemAtomic(XC *xc, Trace::InstRecord *traceData, uint64_t mem,
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unsigned dataSize, Addr addr, unsigned flags, uint64_t *res)
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{
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Fault fault = writeMemTiming(xc, traceData, mem, dataSize, addr, flags,
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res);
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if (fault == NoFault && res != NULL) {
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*res = gtoh(*res);
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}
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return fault;
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}
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}
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#endif
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