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121 lines
2.5 KiB
C
121 lines
2.5 KiB
C
/* Copyright (C) 2015-2018 Free Software Foundation, Inc.
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Contributed by Intel Corp. <walfred.tedeschi@intel.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "x86-cpuid.h"
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#include <stdio.h>
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#define OUR_SIZE 5
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int gx[OUR_SIZE];
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int ga[OUR_SIZE];
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int gb[OUR_SIZE];
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int gc[OUR_SIZE];
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int gd[OUR_SIZE];
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unsigned int
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have_mpx (void)
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{
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unsigned int eax, ebx, ecx, edx;
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if (!__get_cpuid (1, &eax, &ebx, &ecx, &edx))
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return 0;
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if ((ecx & bit_OSXSAVE) == bit_OSXSAVE)
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{
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if (__get_cpuid_max (0, NULL) < 7)
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return 0;
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__cpuid_count (7, 0, eax, ebx, ecx, edx);
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if ((ebx & bit_MPX) == bit_MPX)
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return 1;
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else
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return 0;
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}
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return 0;
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}
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int
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bp1 (int value)
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{
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return 1;
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}
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int
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bp2 (int value)
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{
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return 1;
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}
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void
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upper (int * p, int * a, int * b, int * c, int * d, int len)
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{
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int value;
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value = *(p + len);
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value = *(a + len);
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value = *(b + len);
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value = *(c + len);
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value = *(d + len);
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}
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void
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lower (int * p, int * a, int * b, int * c, int * d, int len)
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{
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int value;
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value = *(p - len);
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value = *(a - len);
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value = *(b - len);
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value = *(c - len);
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bp2 (value);
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value = *(d - len);
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}
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int
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main (void)
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{
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if (have_mpx ())
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{
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int sx[OUR_SIZE];
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int sa[OUR_SIZE];
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int sb[OUR_SIZE];
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int sc[OUR_SIZE];
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int sd[OUR_SIZE];
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int *x, *a, *b, *c, *d;
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x = calloc (OUR_SIZE, sizeof (int));
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a = calloc (OUR_SIZE, sizeof (int));
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b = calloc (OUR_SIZE, sizeof (int));
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c = calloc (OUR_SIZE, sizeof (int));
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d = calloc (OUR_SIZE, sizeof (int));
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upper (x, a, b, c, d, OUR_SIZE + 2);
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upper (sx, sa, sb, sc, sd, OUR_SIZE + 2);
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upper (gx, ga, gb, gc, gd, OUR_SIZE + 2);
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lower (x, a, b, c, d, 1);
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lower (sx, sa, sb, sc, sd, 1);
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bp1 (*x);
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lower (gx, ga, gb, gc, gd, 1);
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free (x);
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free (a);
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free (b);
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free (c);
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free (d);
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}
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return 0;
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}
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