workload.hh

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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
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#ifndef __SIM_WORKLOAD_HH__
#define __SIM_WORKLOAD_HH__
 
#include "base/loader/object_file.hh"
#include "base/loader/symtab.hh"
#include "params/Workload.hh"
#include "sim/sim_object.hh"
#include "sim/stats.hh"
 
class System;
class ThreadContext;
 
class Workload : public SimObject
{
  protected:
    virtual Addr fixFuncEventAddr(Addr addr) const { return addr; }
 
    struct WorkloadStats : public Stats::Group
    {
        struct InstStats: public Stats::Group
        {
            Stats::Scalar arm;
            Stats::Scalar quiesce;
 
            InstStats(Stats::Group *parent) : Stats::Group(parent, "inst"),
                ADD_STAT(arm, UNIT_COUNT,
                         "number of arm instructions executed"),
                ADD_STAT(quiesce, UNIT_COUNT,
                         "number of quiesce instructions executed")
            {}
 
        } instStats;
 
        WorkloadStats(Workload *workload) : Stats::Group(workload),
            instStats(workload)
        {}
    } stats;
 
  public:
    Workload(const WorkloadParams &params) : SimObject(params), stats(this)
    {}
 
    void recordQuiesce() { stats.instStats.quiesce++; }
    void recordArm() { stats.instStats.arm++; }
 
    System *system = nullptr;
 
    virtual Addr getEntry() 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.");
    }
 
    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;
    }
};
 
#endif // __SIM_WORKLOAD_HH__