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/* Copyright (C) 2015-2020 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;
}
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