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4a612d6f WT |
1 | /* Test for inferior function calls MPX context. |
2 | ||
e2882c85 | 3 | Copyright (C) 2017-2018 Free Software Foundation, Inc. |
4a612d6f WT |
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 | } |