KernelCoreSyscallManager.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_SYSCALL_MANAGER_H
#define KERNEL_CORE_SYSCALL_MANAGER_H
 
#include "pedigree/kernel/compiler.h"
#include "pedigree/kernel/processor/SyscallHandler.h"
#include "pedigree/kernel/processor/SyscallManager.h"
#include "pedigree/kernel/processor/state_forward.h"
#include "pedigree/kernel/processor/types.h"
 
class EXPORTED_PUBLIC KernelCoreSyscallManager : public SyscallHandler {
 public:
  static KernelCoreSyscallManager& instance() {
    return m_Instance;
  }
 
  enum Function_t {
    yield = 0,
 
    link = 1,
 
    sleep = 2,
 
    functionEnd
  };
 
  void initialise();
 
  uintptr_t call(Function_t function, uintptr_t p1 = 0, uintptr_t p2 = 0, uintptr_t p3 = 0,
                 uintptr_t p4 = 0, uintptr_t p5 = 0);
 
  virtual uintptr_t syscall(SyscallState& state);
 
  typedef uintptr_t (*SyscallCallback)(SyscallState&);
 
  uintptr_t registerSyscall(Function_t function, SyscallCallback func);
 
 protected:
  inline KernelCoreSyscallManager();
  inline virtual ~KernelCoreSyscallManager();
 
 private:
  KernelCoreSyscallManager(const KernelCoreSyscallManager&);
  KernelCoreSyscallManager& operator=(const KernelCoreSyscallManager&);
 
  static KernelCoreSyscallManager m_Instance;
 
  SyscallCallback m_Functions[16];
  SyscallManager::Registration m_Registration;
};
 
#endif