registers.h

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/*
 *  Copyright (C) 2003,2004 Bregmasoft
 * 
 * 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 2 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, write to the Free Software Foundation, Inc., 59 Temple
 * Place, Suite 330, Boston, MA 02111-1307 USA
 */
#ifndef ZYGOMA_X86_REGISTERS_H_ 
#define ZYGOMA_X86_REGISTERS_H_ 

#include <arch/types.h>

namespace Zygoma
{
  static inline u32 __attribute__((__unused__))
  getCR2()
  {
    register u32 faultAddress;

    __asm__ __volatile__("mov %%cr2, %[faultAddress]"
                         : [faultAddress] "=r" (faultAddress)
                         :);
    return faultAddress;
  }

  static inline void __attribute__((__unused__))
  setCR3(u32 pagedir)
  {
     __asm__ __volatile__("mov %[pagedir], %%cr3"
                          :
                          : [pagedir] "r" (pagedir));
  }

  static inline u32 __attribute__((__unused__))
  getCR3()
  {
    u32 pagedir;

    __asm__ __volatile__("mov %%cr3, %[pagedir]"
                         : [pagedir] "=r" (pagedir));
    return pagedir;
  }

} // namespace Zygoma

#endif // ZYGOMA_X86_REGISTERS_H_ 

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