NMFaultHandler.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_CORE_PROCESSOR_NMFAULTHANDLER_H_
#define KERNEL_CORE_PROCESSOR_NMFAULTHANDLER_H_
 
#include "pedigree/kernel/compiler.h"
#include "pedigree/kernel/processor/InterruptHandler.h"
#include "pedigree/kernel/processor/state_forward.h"
#include "pedigree/kernel/processor/types.h"
 
class NMFaultHandler : private InterruptHandler {
 public:
  inline static NMFaultHandler& instance() {
    return m_Instance;
  }
 
  bool initialise();
 
  bool initialiseProcessor();
 
  EXPORTED_PUBLIC static bool saveCurrentThreadFpuState(void* buffer, bool resetForSignalHandler);
 
  EXPORTED_PUBLIC static bool restoreCurrentThreadFpuState(const void* buffer);
 
  static bool inheritCurrentThreadFpuState(class Thread* thread);
 
  //
  // InterruptHandler interface.
  //
  virtual void interrupt(size_t interruptNumber, InterruptState& state);
 
  // Handle thread termination (e.g. might need to clean up pointers to state)
  void threadTerminated(class Thread*);
 
 private:
  NMFaultHandler() INITIALISATION_ONLY;
 
  NMFaultHandler(const NMFaultHandler&);
 
  static NMFaultHandler m_Instance;
};
 
#endif /* KERNEL_CORE_PROCESSOR_X86_NMFAULTHANDLER_H_ */