/* ----------------------------------------------------------------------- *
   *
   *   Copyright 2002-2004 H. Peter Anvin - All Rights Reserved
   *
   *   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, Inc., 53 Temple Place Ste 330,

   *   Boston MA 02111-1307, USA; either version 2 of the License, or

   *   (at your option) any later version; incorporated herein by reference.
   *
   * ----------------------------------------------------------------------- */
  
  /*

   * raid6/x86.h

   *
   * Definitions common to x86 and x86-64 RAID-6 code only
   */
  
  #ifndef LINUX_RAID_RAID6X86_H
  #define LINUX_RAID_RAID6X86_H

  #if (defined(__i386__) || defined(__x86_64__)) && !defined(__arch_um__)

  #ifdef __KERNEL__ /* Real code */

  #include <asm/i387.h>

  
  #else /* Dummy code for user space testing */

  static inline void kernel_fpu_begin(void)

  {

  }

  static inline void kernel_fpu_end(void)

  {

  }

  #define X86_FEATURE_MMX		(0*32+23) /* Multimedia Extensions */
  #define X86_FEATURE_FXSR	(0*32+24) /* FXSAVE and FXRSTOR instructions
  					   * (fast save and restore) */
  #define X86_FEATURE_XMM		(0*32+25) /* Streaming SIMD Extensions */
  #define X86_FEATURE_XMM2	(0*32+26) /* Streaming SIMD Extensions-2 */
  #define X86_FEATURE_MMXEXT	(1*32+22) /* AMD MMX extensions */

  /* Should work well enough on modern CPUs for testing */
  static inline int boot_cpu_has(int flag)

  {

  	u32 eax = (flag >> 5) ? 0x80000001 : 1;
  	u32 edx;

  	asm volatile("cpuid"
  		     : "+a" (eax), "=d" (edx)
  		     : : "ecx", "ebx");

  	return (edx >> (flag & 31)) & 1;

  }

  #endif /* ndef __KERNEL__ */
  
  #endif
  #endif