Kernel.h

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/*
 * Copyright (C) 2015 Niek Linnenbank
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef __KERNEL_H
#define __KERNEL_H
 
#include <Macros.h>
#include <Types.h>
#include <Vector.h>
#include <List.h>
#include <Singleton.h>
#include <BootImage.h>
#include <Memory.h>
#include <CoreInfo.h>
 
class API;
class BootImageStorage;
class MemoryContext;
class Process;
class ProcessManager;
class SplitAllocator;
class IntController;
class Timer;
struct CPUState;
 
typedef void InterruptHandler(struct CPUState *state, ulong param, ulong vector);
 
typedef struct InterruptHook
{
    InterruptHook(InterruptHandler *h, ulong p) : handler(h), param(p)
    {
    }
 
    bool operator == (InterruptHook *i)
    {
        return handler == i->handler && param == i->param;
    }
 
    InterruptHandler *handler;
 
    ulong param;
}
InterruptHook;
 
class Kernel : public WeakSingleton<Kernel>
{
  public:
 
    enum Result
    {
        Success,
        InvalidBootImage,
        ProcessError,
        IOError
    };
 
    Kernel(CoreInfo *info);
 
    static Error initializeHeap();
 
    SplitAllocator * getAllocator();
 
    ProcessManager * getProcessManager();
 
    API * getAPI();
 
    MemoryContext * getMemoryContext();
 
    CoreInfo * getCoreInfo();
 
    Timer * getTimer();
 
    int run();
 
    virtual void enableIRQ(u32 irq, bool enabled);
 
    virtual Result sendIRQ(const uint coreId, const uint irq);
 
    virtual void hookIntVector(u32 vec, InterruptHandler h, ulong p);
 
    virtual void executeIntVector(u32 vec, CPUState *state);
 
    virtual Result loadBootImage();
 
  private:
 
    virtual Result loadBootProgram(const BootImageStorage &bootImage,
                                   const BootSymbol &program);
 
  protected:
 
    SplitAllocator *m_alloc;
 
    ProcessManager *m_procs;
 
    API *m_api;
 
    CoreInfo *m_coreInfo;
 
    Vector<List<InterruptHook *> *> m_interrupts;
 
    IntController *m_intControl;
 
    Timer *m_timer;
};
 
#endif /* __KERNEL_H */