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b5fe8ec8 | 1 | /* Test for large alignment in TLS blocks, BZ#18383. |
d614a753 | 2 | Copyright (C) 2015-2020 Free Software Foundation, Inc. |
b5fe8ec8 RM |
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 | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
b5fe8ec8 RM |
18 | |
19 | #include <stdint.h> | |
20 | #include <stdio.h> | |
21 | #include <stdlib.h> | |
22 | ||
23 | static __thread int tdata1 = 1; | |
24 | static __thread int tdata2 __attribute__ ((aligned (0x10))) = 2; | |
25 | static __thread int tdata3 __attribute__ ((aligned (0x1000))) = 4; | |
26 | static __thread int tbss1; | |
27 | static __thread int tbss2 __attribute__ ((aligned (0x10))); | |
28 | static __thread int tbss3 __attribute__ ((aligned (0x1000))); | |
29 | ||
30 | #ifndef NO_LIB | |
31 | extern __thread int mod_tdata1; | |
32 | extern __thread int mod_tdata2; | |
33 | extern __thread int mod_tdata3; | |
34 | extern __thread int mod_tbss1; | |
35 | extern __thread int mod_tbss2; | |
36 | extern __thread int mod_tbss3; | |
37 | #endif | |
38 | ||
39 | static int | |
40 | test_one (const char *which, unsigned int alignment, int *var, int value) | |
41 | { | |
42 | uintptr_t addr = (uintptr_t) var; | |
43 | unsigned int misalign = addr & (alignment - 1); | |
44 | ||
45 | printf ("%s TLS address %p %% %u = %u\n", | |
46 | which, (void *) var, alignment, misalign); | |
47 | ||
48 | int got = *var; | |
49 | if (got != value) | |
50 | { | |
51 | printf ("%s value %d should be %d\n", which, got, value); | |
52 | return 1; | |
53 | } | |
54 | ||
55 | return misalign != 0; | |
56 | } | |
57 | ||
58 | static int | |
59 | do_test (void) | |
60 | { | |
61 | int fail = 0; | |
62 | ||
63 | fail |= test_one ("tdata1", 4, &tdata1, 1); | |
64 | fail |= test_one ("tdata2", 0x10, &tdata2, 2); | |
65 | fail |= test_one ("tdata3", 0x1000, &tdata3, 4); | |
66 | ||
67 | fail |= test_one ("tbss1", 4, &tbss1, 0); | |
68 | fail |= test_one ("tbss2", 0x10, &tbss2, 0); | |
69 | fail |= test_one ("tbss3", 0x1000, &tbss3, 0); | |
70 | ||
71 | #ifndef NO_LIB | |
72 | fail |= test_one ("mod_tdata1", 4, &mod_tdata1, 1); | |
73 | fail |= test_one ("mod_tdata2", 0x10, &mod_tdata2, 2); | |
74 | fail |= test_one ("mod_tdata3", 0x1000, &mod_tdata3, 4); | |
75 | ||
76 | fail |= test_one ("mod_tbss1", 4, &mod_tbss1, 0); | |
77 | fail |= test_one ("mod_tbss2", 0x10, &mod_tbss2, 0); | |
78 | fail |= test_one ("mod_tbss3", 0x1000, &mod_tbss3, 0); | |
79 | #endif | |
80 | ||
81 | return fail ? EXIT_FAILURE : EXIT_SUCCESS; | |
82 | } | |
83 | ||
36fe25fd | 84 | #include <support/test-driver.c> |