kernel_workload.hh

Go to the documentation of this file.

/*
 * 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_KERNEL_WORKLOAD_HH__
#define __SIM_KERNEL_WORKLOAD_HH__
 
#include <string>
#include <vector>
 
#include "base/loader/object_file.hh"
#include "base/loader/symtab.hh"
#include "base/types.hh"
#include "params/KernelWorkload.hh"
#include "sim/workload.hh"
 
class System;
 
class KernelWorkload : public Workload
{
  public:
    using Params = KernelWorkloadParams;
 
  protected:
    const Params &_params;
 
    Loader::MemoryImage image;
 
    Addr _loadAddrMask;
 
    Addr _loadAddrOffset;
 
    Addr _start, _end;
 
    std::vector<Loader::ObjectFile *> extras;
 
    Loader::ObjectFile *kernelObj = nullptr;
    // Keep a separate copy of the kernel's symbol table so we can add things
    // to it.
    Loader::SymbolTable kernelSymtab;
 
    const std::string commandLine;
 
  public:
    const Params &params() const { return _params; }
 
    Addr start() const { return _start; }
    Addr end() const { return _end; }
    Addr loadAddrMask() const { return _loadAddrMask; }
    Addr loadAddrOffset() const { return _loadAddrOffset; }
 
    KernelWorkload(const Params &p);
 
    Addr getEntry() const override { return kernelObj->entryPoint(); }
    Loader::Arch
    getArch() const override
    {
        return kernelObj->getArch();
    }
 
    const Loader::SymbolTable &
    symtab(ThreadContext *tc) override
    {
        return kernelSymtab;
    }
 
    bool
    insertSymbol(const Loader::Symbol &symbol) override
    {
        return kernelSymtab.insert(symbol);
    }
 
    void initState() override;
 
    void serialize(CheckpointOut &cp) const override;
    void unserialize(CheckpointIn &cp) override;
 
    template <class T, typename... Args>
    T *
    addKernelFuncEvent(const char *lbl, Args... args)
    {
        return addFuncEvent<T>(kernelSymtab, lbl, std::forward<Args>(args)...);
    }
 
    template <class T, typename... Args>
    T *
    addKernelFuncEventOrPanic(const char *lbl, Args... args)
    {
        T *e = addFuncEvent<T>(kernelSymtab, lbl, std::forward<Args>(args)...);
        panic_if(!e, "Failed to find kernel symbol '%s'", lbl);
        return e;
    }
};
 
#endif // __SIM_KERNEL_WORKLOAD_HH__