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/*
* Copyright 2019 Google Inc.
*
* 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.
*/
#ifndef __SIM_WORKLOAD_HH__
#define __SIM_WORKLOAD_HH__
#include <set>
#include <tuple>
#include "base/loader/object_file.hh"
#include "base/loader/symtab.hh"
#include "enums/ByteOrder.hh"
#include "params/StubWorkload.hh"
#include "params/Workload.hh"
#include "sim/sim_object.hh"
#include "sim/stats.hh"
namespace gem5
{
class BaseRemoteGDB;
class System;
class ThreadContext;
class Workload : public SimObject
{
protected:
virtual Addr fixFuncEventAddr(Addr addr) const { return addr; }
struct WorkloadStats : public statistics::Group
{
struct InstStats: public statistics::Group
{
statistics::Scalar arm;
statistics::Scalar quiesce;
InstStats(statistics::Group *parent)
: statistics::Group(parent, "inst"),
ADD_STAT(arm, statistics::units::Count::get(),
"number of arm instructions executed"),
ADD_STAT(quiesce, statistics::units::Count::get(),
"number of quiesce instructions executed")
{}
} instStats;
WorkloadStats(Workload *workload) : statistics::Group(workload),
instStats(workload)
{}
} stats;
BaseRemoteGDB *gdb = nullptr;
bool waitForRemoteGDB = false;
std::set<ThreadContext *> threads;
System *system = nullptr;
public:
Workload(const WorkloadParams &params) : SimObject(params), stats(this),
waitForRemoteGDB(params.wait_for_remote_gdb)
{}
virtual void setSystem(System *sys) { system = sys; }
void recordQuiesce() { stats.instStats.quiesce++; }
void recordArm() { stats.instStats.arm++; }
// Once trapping into GDB is no longer a special case routed through the
// system object, this helper can be removed.
bool trapToGdb(int signal, ContextID ctx_id);
bool sendToGdb(std::string msg);
virtual void registerThreadContext(ThreadContext *tc);
virtual void replaceThreadContext(ThreadContext *tc);
void startup() override;
virtual Addr getEntry() const = 0;
virtual ByteOrder byteOrder() const = 0;
virtual loader::Arch getArch() const = 0;
virtual const loader::SymbolTable &symtab(ThreadContext *tc) = 0;
virtual bool insertSymbol(const loader::Symbol &symbol) = 0;
virtual void
syscall(ThreadContext *tc)
{
panic("syscall() not implemented.");
}
virtual void
event(ThreadContext *tc)
{
warn("Unhandled workload event.");
}
/** @{ */
/**
* Add a function-based event to the given function, to be looked
* up in the specified symbol table.
*
* The ...OrPanic flavor of the method causes the simulator to
* panic if the symbol can't be found.
*
* @param symtab Symbol table to use for look up.
* @param lbl Function to hook the event to.
* @param desc Description to be passed to the event.
* @param args Arguments to be forwarded to the event constructor.
*/
template <class T, typename... Args>
T *
addFuncEvent(const loader::SymbolTable &symtab, const char *lbl,
const std::string &desc, Args... args)
{
auto it = symtab.find(lbl);
if (it == symtab.end())
return nullptr;
return new T(system, desc, fixFuncEventAddr(it->address),
std::forward<Args>(args)...);
}
template <class T>
T *
addFuncEvent(const loader::SymbolTable &symtab, const char *lbl)
{
return addFuncEvent<T>(symtab, lbl, lbl);
}
template <class T, typename... Args>
T *
addFuncEventOrPanic(const loader::SymbolTable &symtab, const char *lbl,
Args... args)
{
T *e = addFuncEvent<T>(symtab, lbl, std::forward<Args>(args)...);
panic_if(!e, "Failed to find symbol '%s'", lbl);
return e;
}
/** @} */
};
class StubWorkload : public Workload
{
private:
PARAMS(StubWorkload);
loader::SymbolTable _symtab;
public:
StubWorkload(const StubWorkloadParams &params) : Workload(params) {}
Addr getEntry() const override { return params().entry; }
ByteOrder byteOrder() const override { return params().byte_order; }
loader::Arch getArch() const override { return loader::UnknownArch; }
const loader::SymbolTable &
symtab(ThreadContext *tc) override
{
return _symtab;
}
bool
insertSymbol(const loader::Symbol &symbol) override
{
return _symtab.insert(symbol);
}
};
} // namespace gem5
#endif // __SIM_WORKLOAD_HH__