| /* |
| * 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 "base/types.hh" |
| #include "sim/byteswap.hh" |
| #include "sim/fault_fwd.hh" |
| #include "sim/insttracer.hh" |
| |
| /// Read from memory in timing mode. |
| template <class XC, class MemT> |
| Fault |
| readMemTiming(XC *xc, Trace::InstRecord *traceData, Addr addr, |
| MemT &mem, unsigned flags) |
| { |
| return xc->readMem(addr, (uint8_t *)&mem, 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, |
| unsigned flags) |
| { |
| memset(&mem, 0, sizeof(mem)); |
| Fault fault = readMemTiming(xc, traceData, addr, mem, 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, |
| unsigned 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, unsigned flags, uint64_t *res) |
| { |
| Fault fault = writeMemTiming(xc, traceData, mem, addr, flags, res); |
| if (fault == NoFault && res != NULL) { |
| *res = TheISA::gtoh((MemT)*res); |
| } |
| return fault; |
| } |
| |
| #endif |