x86_common/ProcessorInformation.h

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef KERNEL_PROCESSOR_X86_COMMON_PROCESSORINFORMATION_H
#define KERNEL_PROCESSOR_X86_COMMON_PROCESSORINFORMATION_H

#define _PROCESSOR_INFORMATION_ONLY_WANT_PROCESSORID

#include "pedigree/kernel/compiler.h"
#include "pedigree/kernel/processor/ProcessorInformation.h"
#include "pedigree/kernel/processor/types.h"

class VirtualAddressSpace;
class PerProcessorScheduler;
class Thread;

class EXPORTED_PUBLIC X86CommonProcessorInformation
{
    friend class Processor;
    friend class Multiprocessor;

  public:
#if defined(X86)
    typedef struct X86TaskStateSegment TaskStateSegment;
#else
    typedef struct X64TaskStateSegment TaskStateSegment;
#endif

    VirtualAddressSpace &getVirtualAddressSpace() const;
    void setVirtualAddressSpace(VirtualAddressSpace &virtualAddressSpace);

    void setTssSelector(uint16_t TssSelector);
    void setTss(void *Tss);
    uint16_t getTssSelector() const;
    void *getTss() const;
    uint16_t getTlsSelector();
    void setTlsSelector(uint16_t tls);

    uintptr_t getKernelStack() const;
    void setKernelStack(uintptr_t stack);
    Thread *getCurrentThread() const;
    void setCurrentThread(Thread *pThread);

    PerProcessorScheduler &getScheduler();

  protected:
    X86CommonProcessorInformation(ProcessorId processorId, uint8_t apicId = 0);
    virtual ~X86CommonProcessorInformation();

    void setIds(ProcessorId processorId, uint8_t apicId = 0);

  private:
    X86CommonProcessorInformation();
    X86CommonProcessorInformation(const X86CommonProcessorInformation &);
    X86CommonProcessorInformation &
    operator=(const X86CommonProcessorInformation &);

    ProcessorId m_ProcessorId;
    uint16_t m_TssSelector;
    TaskStateSegment *m_Tss;
    VirtualAddressSpace *m_VirtualAddressSpace;
    uint8_t m_LocalApicId;
    Thread *m_pCurrentThread;
    PerProcessorScheduler *m_Scheduler;
    uint16_t m_TlsSelector;
};

#endif