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ecce11aa | 1 | /* Check ISA level on dlopened shared object. |
dff8da6b | 2 | Copyright (C) 2020-2024 Free Software Foundation, Inc. |
ecce11aa L |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library 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 GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <https://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <stdlib.h> | |
20 | #include <stdbool.h> | |
21 | #include <string.h> | |
22 | #include <elf.h> | |
23 | #include <get-isa-level.h> | |
24 | #include <support/xdlfcn.h> | |
25 | #include <support/check.h> | |
26 | #include <support/test-driver.h> | |
27 | ||
28 | static void | |
29 | do_test_1 (const char *modname, bool fail) | |
30 | { | |
31 | int (*fp) (void); | |
32 | void *h; | |
33 | ||
34 | h = dlopen (modname, RTLD_LAZY); | |
35 | if (h == NULL) | |
36 | { | |
37 | const char *err = dlerror (); | |
38 | if (fail) | |
39 | { | |
40 | if (strstr (err, "CPU ISA level is lower than required") == NULL) | |
41 | FAIL_EXIT1 ("incorrect dlopen '%s' error: %s\n", modname, err); | |
42 | ||
43 | return; | |
44 | } | |
45 | ||
46 | FAIL_EXIT1 ("cannot open '%s': %s\n", modname, err); | |
47 | } | |
48 | ||
49 | if (fail) | |
50 | FAIL_EXIT1 ("dlopen '%s' should have failed\n", modname); | |
51 | ||
52 | fp = xdlsym (h, "test"); | |
53 | ||
54 | if (fp () != 0) | |
55 | FAIL_EXIT1 ("test () != 0\n"); | |
56 | ||
57 | dlclose (h); | |
58 | } | |
59 | ||
60 | static int | |
61 | do_test (void) | |
62 | { | |
ff6d62e9 | 63 | const struct cpu_features *cpu_features = __get_cpu_features (); |
ecce11aa L |
64 | unsigned int isa_level = get_isa_level (cpu_features); |
65 | bool has_isa_baseline = ((isa_level & GNU_PROPERTY_X86_ISA_1_BASELINE) | |
66 | == GNU_PROPERTY_X86_ISA_1_BASELINE); | |
67 | bool has_isa_v2 = ((isa_level & GNU_PROPERTY_X86_ISA_1_V2) | |
68 | == GNU_PROPERTY_X86_ISA_1_V2); | |
69 | bool has_isa_v3 = ((isa_level & GNU_PROPERTY_X86_ISA_1_V3) | |
70 | == GNU_PROPERTY_X86_ISA_1_V3); | |
71 | bool has_isa_v4 = ((isa_level & GNU_PROPERTY_X86_ISA_1_V4) | |
72 | == GNU_PROPERTY_X86_ISA_1_V4); | |
73 | ||
74 | if (!has_isa_baseline) | |
75 | { | |
76 | do_test_1 ("tst-isa-level-mod-1-baseline.so", true); | |
77 | return EXIT_SUCCESS; | |
78 | } | |
79 | ||
80 | do_test_1 ("tst-isa-level-mod-1-baseline.so", false); | |
81 | ||
82 | /* Skip on x86-64-v4 platforms since dlopen v4 module always works. */ | |
83 | if (has_isa_v4) | |
84 | return EXIT_SUCCESS; | |
85 | ||
86 | do_test_1 ("tst-isa-level-mod-1-v4.so", true); | |
87 | ||
88 | /* Skip on x86-64-v3 platforms since dlopen v3 module always works. */ | |
89 | if (has_isa_v3) | |
90 | return EXIT_SUCCESS; | |
91 | ||
92 | do_test_1 ("tst-isa-level-mod-1-v3.so", true); | |
93 | ||
94 | /* Skip on x86-64-v2 platforms since dlopen v2 module always works. */ | |
95 | if (has_isa_v2) | |
96 | return EXIT_SUCCESS; | |
97 | ||
98 | do_test_1 ("tst-isa-level-mod-1-v2.so", true); | |
99 | ||
100 | return EXIT_SUCCESS; | |
101 | } | |
102 | ||
103 | #include <support/test-driver.c> |