gem5/sim/pseudo_inst.cc
Kevin Lim 4a2c50bc8f Support loading in a symbol file.
arch/alpha/freebsd/system.cc:
arch/alpha/isa/decoder.isa:
arch/alpha/linux/system.cc:
arch/alpha/system.cc:
arch/alpha/tru64/system.cc:
    Let symbol files be read in so that profiling can happen on the binaries as well.
python/m5/objects/System.py:
    Add in symbol files.
sim/pseudo_inst.cc:
    Load in a specified symbol file.
sim/pseudo_inst.hh:
    Allow for symbols to be loaded.
sim/system.hh:
    Support symbol file.
util/m5/m5.c:
util/m5/m5op.S:
    Add support to m5 util for loading symbols (and readfile).

--HG--
extra : convert_revision : f10c1049bcd7b22b98c73052c0666b964aff222b
2006-08-23 16:57:07 -04:00

339 lines
8.7 KiB
C++

/*
* Copyright (c) 2003-2006 The Regents of The University of Michigan
* 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.
*/
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <cstdio>
#include <string>
#include "sim/pseudo_inst.hh"
#include "arch/vtophys.hh"
#include "cpu/base.hh"
#include "cpu/sampler/sampler.hh"
#include "cpu/exec_context.hh"
#include "cpu/quiesce_event.hh"
#include "kern/kernel_stats.hh"
#include "sim/param.hh"
#include "sim/serialize.hh"
#include "sim/sim_exit.hh"
#include "sim/stat_control.hh"
#include "sim/stats.hh"
#include "sim/system.hh"
#include "sim/debug.hh"
#include "sim/vptr.hh"
using namespace std;
extern Sampler *SampCPU;
using namespace Stats;
using namespace TheISA;
namespace AlphaPseudo
{
bool doStatisticsInsts;
bool doCheckpointInsts;
bool doQuiesce;
void
arm(ExecContext *xc)
{
if (xc->getKernelStats())
xc->getKernelStats()->arm();
}
void
quiesce(ExecContext *xc)
{
if (!doQuiesce)
return;
xc->suspend();
if (xc->getKernelStats())
xc->getKernelStats()->quiesce();
}
void
quiesceNs(ExecContext *xc, uint64_t ns)
{
if (!doQuiesce || ns == 0)
return;
EndQuiesceEvent *quiesceEvent = xc->getQuiesceEvent();
if (quiesceEvent->scheduled())
quiesceEvent->reschedule(curTick + Clock::Int::ns * ns);
else
quiesceEvent->schedule(curTick + Clock::Int::ns * ns);
xc->suspend();
if (xc->getKernelStats())
xc->getKernelStats()->quiesce();
}
void
quiesceCycles(ExecContext *xc, uint64_t cycles)
{
if (!doQuiesce || cycles == 0)
return;
EndQuiesceEvent *quiesceEvent = xc->getQuiesceEvent();
if (quiesceEvent->scheduled())
quiesceEvent->reschedule(curTick +
xc->getCpuPtr()->cycles(cycles));
else
quiesceEvent->schedule(curTick +
xc->getCpuPtr()->cycles(cycles));
xc->suspend();
if (xc->getKernelStats())
xc->getKernelStats()->quiesce();
}
uint64_t
quiesceTime(ExecContext *xc)
{
return (xc->readLastActivate() - xc->readLastSuspend()) / Clock::Int::ns;
}
void
ivlb(ExecContext *xc)
{
if (xc->getKernelStats())
xc->getKernelStats()->ivlb();
}
void
ivle(ExecContext *xc)
{
}
void
m5exit_old(ExecContext *xc)
{
SimExit(curTick, "m5_exit_old instruction encountered");
}
void
m5exit(ExecContext *xc, Tick delay)
{
Tick when = curTick + delay * Clock::Int::ns;
SimExit(when, "m5_exit instruction encountered");
}
void
loadsymbol(ExecContext *xc)
{
const string &filename = xc->getCpuPtr()->system->params()->symbolfile;
if (filename.empty()) {
return;
}
std::string buffer;
ifstream file(filename.c_str());
if (!file)
fatal("file error: Can't open symbol table file %s\n", filename);
while (!file.eof()) {
getline(file, buffer);
if (buffer.empty())
continue;
int idx = buffer.find(' ');
if (idx == string::npos)
continue;
string address = "0x" + buffer.substr(0, idx);
eat_white(address);
if (address.empty())
continue;
// Skip over letter and space
string symbol = buffer.substr(idx + 3);
eat_white(symbol);
if (symbol.empty())
continue;
Addr addr;
if (!to_number(address, addr))
continue;
if (!xc->getSystemPtr()->kernelSymtab->insert(addr, symbol))
continue;
DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr);
}
file.close();
}
void
resetstats(ExecContext *xc, Tick delay, Tick period)
{
if (!doStatisticsInsts)
return;
Tick when = curTick + delay * Clock::Int::ns;
Tick repeat = period * Clock::Int::ns;
using namespace Stats;
SetupEvent(Reset, when, repeat);
}
void
dumpstats(ExecContext *xc, Tick delay, Tick period)
{
if (!doStatisticsInsts)
return;
Tick when = curTick + delay * Clock::Int::ns;
Tick repeat = period * Clock::Int::ns;
using namespace Stats;
SetupEvent(Dump, when, repeat);
}
void
addsymbol(ExecContext *xc, Addr addr, Addr symbolAddr)
{
char symb[100];
CopyString(xc, symb, symbolAddr, 100);
std::string symbol(symb);
DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr);
xc->getSystemPtr()->kernelSymtab->insert(addr,symbol);
}
void
dumpresetstats(ExecContext *xc, Tick delay, Tick period)
{
if (!doStatisticsInsts)
return;
Tick when = curTick + delay * Clock::Int::ns;
Tick repeat = period * Clock::Int::ns;
using namespace Stats;
SetupEvent(Dump|Reset, when, repeat);
}
void
m5checkpoint(ExecContext *xc, Tick delay, Tick period)
{
if (!doCheckpointInsts)
return;
Tick when = curTick + delay * Clock::Int::ns;
Tick repeat = period * Clock::Int::ns;
Checkpoint::setup(when, repeat);
}
uint64_t
readfile(ExecContext *xc, Addr vaddr, uint64_t len, uint64_t offset)
{
const string &file = xc->getCpuPtr()->system->params()->readfile;
if (file.empty()) {
return ULL(0);
}
uint64_t result = 0;
int fd = ::open(file.c_str(), O_RDONLY, 0);
if (fd < 0)
panic("could not open file %s\n", file);
if (::lseek(fd, offset, SEEK_SET) < 0)
panic("could not seek: %s", strerror(errno));
char *buf = new char[len];
char *p = buf;
while (len > 0) {
int bytes = ::read(fd, p, len);
if (bytes <= 0)
break;
p += bytes;
result += bytes;
len -= bytes;
}
close(fd);
CopyIn(xc, vaddr, buf, result);
delete [] buf;
return result;
}
class Context : public ParamContext
{
public:
Context(const string &section) : ParamContext(section) {}
void checkParams();
};
Context context("pseudo_inst");
Param<bool> __quiesce(&context, "quiesce",
"enable quiesce instructions",
true);
Param<bool> __statistics(&context, "statistics",
"enable statistics pseudo instructions",
true);
Param<bool> __checkpoint(&context, "checkpoint",
"enable checkpoint pseudo instructions",
true);
void
Context::checkParams()
{
doQuiesce = __quiesce;
doStatisticsInsts = __statistics;
doCheckpointInsts = __checkpoint;
}
void debugbreak(ExecContext *xc)
{
debug_break();
}
void switchcpu(ExecContext *xc)
{
if (SampCPU)
SampCPU->switchCPUs();
}
}