gdb/testsuite/gdb.arch/i386-mpx-call.c

   1 /* Test for inferior function calls MPX context.
   2
   3    Copyright (C) 2017-2019 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
  17
  18 #include <stdlib.h>
  19 #include <string.h>
  20 #include "x86-cpuid.h"
  21
  22 /* Defined size for arrays.  */
  23 #define ARRAY_LENGTH    5
  24
  25 unsigned int
  26 have_mpx (void)
  27 {
  28   unsigned int eax, ebx, ecx, edx;
  29
  30   if (!__get_cpuid (1, &eax, &ebx, &ecx, &edx))
  31     return 0;
  32
  33   if ((ecx & bit_OSXSAVE) == bit_OSXSAVE)
  34     {
  35       if (__get_cpuid_max (0, NULL) < 7)
  36         return 0;
  37
  38       __cpuid_count (7, 0, eax, ebx, ecx, edx);
  39
  40       if ((ebx & bit_MPX) == bit_MPX)
  41         return 1;
  42       else
  43         return 0;
  44     }
  45   return 0;
  46 }
  47
  48
  49 int
  50 upper (int *a, int *b, int *c, int *d, int len)
  51 {
  52   int value;
  53
  54   value = *(a + len);
  55   value = *(b + len);
  56   value = *(c + len);
  57   value = *(d + len);
  58
  59   value = value - *a + 1;
  60   return value;
  61 }
  62
  63
  64 int
  65 lower (int *a, int *b, int *c, int *d, int len)
  66 {
  67   int value;
  68
  69   value = *(a - len);
  70   value = *(b - len);
  71   value = *(c - len);
  72   value = *(d - len);
  73
  74   value = value - *a + 1;
  75   return value;
  76 }
  77
  78
  79 char
  80 char_upper (char *str, int length)
  81 {
  82   char ch;
  83   ch = *(str + length);
  84
  85   return ch;
  86 }
  87
  88
  89 char
  90 char_lower (char *str, int length)
  91 {
  92   char ch;
  93   ch = *(str - length);
  94
  95   return ch;
  96 }
  97
  98
  99 int
 100 main (void)
 101 {
 102   if (have_mpx ())
 103     {
 104       int sa[ARRAY_LENGTH];
 105       int sb[ARRAY_LENGTH];
 106       int sc[ARRAY_LENGTH];
 107       int sd[ARRAY_LENGTH];
 108       int *x, *a, *b, *c, *d;
 109       char mchar;
 110       char hello[] = "Hello";
 111
 112       x = malloc (sizeof (int) * ARRAY_LENGTH);
 113       a = malloc (sizeof (int) * ARRAY_LENGTH);
 114       b = malloc (sizeof (int) * ARRAY_LENGTH);
 115       c = malloc (sizeof (int) * ARRAY_LENGTH);
 116       d = malloc (sizeof (int) * ARRAY_LENGTH);
 117
 118       *x = upper (sa, sb, sc, sd, 0);  /* bkpt 1.  */
 119       *x = lower (a, b, c, d, 0);
 120
 121       mchar = char_upper (hello, 10);
 122       mchar = char_lower (hello, 10);
 123
 124       free (x);
 125       free (a);
 126       free (b);
 127       free (c);
 128       free (d);
 129     }
 130   return 0;
 131 }