kernel/core/processor/x64/InterruptManager.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_X64_INTERRUPTMANAGER_H
#define KERNEL_PROCESSOR_X64_INTERRUPTMANAGER_H
#include "pedigree/kernel/Spinlock.h"
#include "pedigree/kernel/compiler.h"
#include "pedigree/kernel/processor/InterruptManager.h"
#include "pedigree/kernel/processor/state_forward.h"
#include "pedigree/kernel/processor/types.h"
 
#include <config.h>
 
class InterruptHandler;
 
class X64InterruptManager : public ::InterruptManager {
  friend class ProcessorBase;
 
 public:
  inline static X64InterruptManager& instance() {
    return m_Instance;
  }
 
  virtual bool registerInterruptHandler(size_t nInterruptNumber, InterruptHandler* pHandler);
 
#if DEBUGGER
  virtual bool registerInterruptHandlerDebugger(size_t nInterruptNumber,
                                                InterruptHandler* pHandler);
  virtual size_t getBreakpointInterruptNumber() PURE;
  virtual size_t getDebugInterruptNumber() PURE;
#endif
 
  static void initialiseProcessor() INITIALISATION_ONLY;
 
  static void initialiseProcessorIst() INITIALISATION_ONLY;
 
 private:
  static void interrupt(InterruptState& interruptState) USED;
 
  static void returnFromInterrupt(InterruptState& interruptState) USED;
 
  void setInterruptGate(size_t nInterruptNumber, uintptr_t interruptHandler) INITIALISATION_ONLY;
  void setIst(size_t nInterruptNumber, size_t ist);
  X64InterruptManager() INITIALISATION_ONLY;
  X64InterruptManager(const X64InterruptManager&);
  X64InterruptManager& operator=(const X64InterruptManager&);
  virtual ~X64InterruptManager();
 
  struct GateDescriptor {
    uint16_t offset0;
    uint16_t selector;
    uint8_t ist;
    uint8_t flags;
    uint16_t offset1;
    uint32_t offset2;
    uint32_t res;
  } PACKED;
 
  Spinlock m_Lock;
 
  GateDescriptor m_IDT[256];
  GateDescriptor m_BootstrapIDT[256];
  InterruptHandler* m_pHandler[256];
#if DEBUGGER
  InterruptHandler* m_pDbgHandler[256];
#endif
 
  static X64InterruptManager m_Instance;
};
 
#endif