2 * Copyright (c) 2011 Google
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 #ifndef __ARCH_GENERIC_MEMHELPERS_HH__
32 #define __ARCH_GENERIC_MEMHELPERS_HH__
34 #include "base/types.hh"
35 #include "sim/byteswap.hh"
36 #include "sim/fault_fwd.hh"
37 #include "sim/insttracer.hh"
39 /// Read from memory in timing mode.
40 template <class XC, class MemT>
42 readMemTiming(XC *xc, Trace::InstRecord *traceData, Addr addr,
43 MemT &mem, unsigned flags)
45 return xc->readMem(addr, (uint8_t *)&mem, sizeof(MemT), flags);
48 /// Extract the data returned from a timing mode read.
51 getMem(PacketPtr pkt, MemT &mem, Trace::InstRecord *traceData)
53 mem = pkt->get<MemT>();
55 traceData->setData(mem);
58 /// Read from memory in atomic mode.
59 template <class XC, class MemT>
61 readMemAtomic(XC *xc, Trace::InstRecord *traceData, Addr addr, MemT &mem,
64 memset(&mem, 0, sizeof(mem));
65 Fault fault = readMemTiming(xc, traceData, addr, mem, flags);
66 if (fault == NoFault) {
67 mem = TheISA::gtoh(mem);
69 traceData->setData(mem);
74 /// Write to memory in timing mode.
75 template <class XC, class MemT>
77 writeMemTiming(XC *xc, Trace::InstRecord *traceData, MemT mem, Addr addr,
78 unsigned flags, uint64_t *res)
81 traceData->setData(mem);
83 mem = TheISA::htog(mem);
84 return xc->writeMem((uint8_t *)&mem, sizeof(MemT), addr, flags, res);
87 /// Write to memory in atomic mode.
88 template <class XC, class MemT>
90 writeMemAtomic(XC *xc, Trace::InstRecord *traceData, const MemT &mem,
91 Addr addr, unsigned flags, uint64_t *res)
93 Fault fault = writeMemTiming(xc, traceData, mem, addr, flags, res);
94 if (fault == NoFault && res != NULL) {
95 *res = TheISA::gtoh((MemT)*res);