gem5/src/arch/generic/memhelpers.hh
Andreas Sandberg 8d2c3735d9 arch: Include generated decoder header after normal headers
The generated decoder header defines macros that represent bit fields
within instructions. These fields typically have short names that
conflict with names in other header files. Include the generated
header after all normal header to avoid this issue.

Change-Id: I53d149b75432c20abdbf651e32c3c785d897973b
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Curtis Dunham <curtis.dunham@arm.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
2017-02-27 12:06:00 +00:00

125 lines
4.4 KiB
C++

/*
* Copyright (c) 2013 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) 2011 Google
* 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: Gabe Black
*/
#ifndef __ARCH_GENERIC_MEMHELPERS_HH__
#define __ARCH_GENERIC_MEMHELPERS_HH__
#include "arch/isa_traits.hh"
#include "base/types.hh"
#include "mem/packet.hh"
#include "mem/request.hh"
#include "sim/byteswap.hh"
#include "sim/insttracer.hh"
/// Initiate a read from memory in timing mode. Note that the 'mem'
/// parameter is unused; only the type of that parameter is used
/// to determine the size of the access.
template <class XC, class MemT>
Fault
initiateMemRead(XC *xc, Trace::InstRecord *traceData, Addr addr,
MemT &mem, Request::Flags flags)
{
return xc->initiateMemRead(addr, sizeof(MemT), flags);
}
/// Extract the data returned from a timing mode read.
template <class MemT>
void
getMem(PacketPtr pkt, MemT &mem, Trace::InstRecord *traceData)
{
mem = pkt->get<MemT>();
if (traceData)
traceData->setData(mem);
}
/// Read from memory in atomic mode.
template <class XC, class MemT>
Fault
readMemAtomic(XC *xc, Trace::InstRecord *traceData, Addr addr, MemT &mem,
Request::Flags flags)
{
memset(&mem, 0, sizeof(mem));
Fault fault = xc->readMem(addr, (uint8_t *)&mem, sizeof(MemT), flags);
if (fault == NoFault) {
mem = TheISA::gtoh(mem);
if (traceData)
traceData->setData(mem);
}
return fault;
}
/// Write to memory in timing mode.
template <class XC, class MemT>
Fault
writeMemTiming(XC *xc, Trace::InstRecord *traceData, MemT mem, Addr addr,
Request::Flags flags, uint64_t *res)
{
if (traceData) {
traceData->setData(mem);
}
mem = TheISA::htog(mem);
return xc->writeMem((uint8_t *)&mem, sizeof(MemT), addr, flags, res);
}
/// Write to memory in atomic mode.
template <class XC, class MemT>
Fault
writeMemAtomic(XC *xc, Trace::InstRecord *traceData, const MemT &mem,
Addr addr, Request::Flags flags, uint64_t *res)
{
if (traceData) {
traceData->setData(mem);
}
MemT host_mem = TheISA::htog(mem);
Fault fault =
xc->writeMem((uint8_t *)&host_mem, sizeof(MemT), addr, flags, res);
if (fault == NoFault && res != NULL) {
if (flags & Request::MEM_SWAP || flags & Request::MEM_SWAP_COND)
*res = TheISA::gtoh((MemT)*res);
else
*res = TheISA::gtoh(*res);
}
return fault;
}
#endif