94 lines
2 KiB
C
94 lines
2 KiB
C
/* Test program for MPX map allocated bounds.
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Copyright 2015-2016 Free Software Foundation, Inc.
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Contributed by Intel Corp. <walfred.tedeschi@intel.com>
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<mircea.gherzan@intel.com>
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This file is part of GDB.
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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 <stdlib.h>
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#include "x86-cpuid.h"
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#ifndef NOINLINE
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#define NOINLINE __attribute__ ((noinline))
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#endif
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#define SIZE 5
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typedef int T;
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unsigned int have_mpx (void) NOINLINE;
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unsigned int NOINLINE
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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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void
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foo (T *p)
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{
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T *x;
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#if defined __GNUC__ && !defined __INTEL_COMPILER
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__bnd_store_ptr_bounds (p, &p);
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#endif
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x = p + SIZE - 1;
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#if defined __GNUC__ && !defined __INTEL_COMPILER
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__bnd_store_ptr_bounds (x, &x);
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#endif
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/* Dummy assign. */
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x = x + 1; /* after-assign */
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return;
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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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T *a = NULL;
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a = calloc (SIZE, sizeof (T)); /* after-decl */
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#if defined __GNUC__ && !defined __INTEL_COMPILER
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__bnd_store_ptr_bounds (a, &a);
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#endif
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foo (a); /* after-alloc */
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free (a);
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}
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return 0;
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}
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