/* Copyright (C) 2015-2016 Free Software Foundation, Inc.

   Contributed by Intel Corp. <walfred.tedeschi@intel.com>

   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 3 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, see <http://www.gnu.org/licenses/>.  */

#include "x86-cpuid.h"
#include <stdio.h>

#define OUR_SIZE    5

int gx[OUR_SIZE];
int ga[OUR_SIZE];
int gb[OUR_SIZE];
int gc[OUR_SIZE];
int gd[OUR_SIZE];

unsigned int
have_mpx (void)
{
  unsigned int eax, ebx, ecx, edx;

  if (!__get_cpuid (1, &eax, &ebx, &ecx, &edx))
    return 0;

  if ((ecx & bit_OSXSAVE) == bit_OSXSAVE)
    {
      if (__get_cpuid_max (0, NULL) < 7)
	return 0;

      __cpuid_count (7, 0, eax, ebx, ecx, edx);

      if ((ebx & bit_MPX) == bit_MPX)
	return 1;
      else
	return 0;
    }
  return 0;
}

int
bp1 (int value)
{
  return 1;
}

int
bp2 (int value)
{
  return 1;
}

void
upper (int * p, int * a, int * b, int * c, int * d, int len)
{
  int value;
  value = *(p + len);
  value = *(a + len);
  value = *(b + len);
  value = *(c + len);
  value = *(d + len);
}

void
lower (int * p, int * a, int * b, int * c, int * d, int len)
{
  int value;
  value = *(p - len);
  value = *(a - len);
  value = *(b - len);
  value = *(c - len);
  bp2 (value);
  value = *(d - len);
}

int
main (void)
{
  if (have_mpx ())
    {
      int sx[OUR_SIZE];
      int sa[OUR_SIZE];
      int sb[OUR_SIZE];
      int sc[OUR_SIZE];
      int sd[OUR_SIZE];
      int *x, *a, *b, *c, *d;

      x = calloc (OUR_SIZE, sizeof (int));
      a = calloc (OUR_SIZE, sizeof (int));
      b = calloc (OUR_SIZE, sizeof (int));
      c = calloc (OUR_SIZE, sizeof (int));
      d = calloc (OUR_SIZE, sizeof (int));

      upper (x, a, b, c, d, OUR_SIZE + 2);
      upper (sx, sa, sb, sc, sd, OUR_SIZE + 2);
      upper (gx, ga, gb, gc, gd, OUR_SIZE + 2);
      lower (x, a, b, c, d, 1);
      lower (sx, sa, sb, sc, sd, 1);
      bp1 (*x);
      lower (gx, ga, gb, gc, gd, 1);

      free (x);
      free (a);
      free (b);
      free (c);
      free (d);
    }
  return 0;
}