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dff8da6b | 1 | /* Copyright (C) 2003-2024 Free Software Foundation, Inc. |
c874a32e | 2 | This file is part of the GNU C Library. |
c874a32e UD |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Lesser General Public | |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Lesser General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
c874a32e UD |
17 | |
18 | /* Check alignment, overlapping and layout of TLS variables. */ | |
19 | #include <stdint.h> | |
20 | #include <stdio.h> | |
21 | #include <stdlib.h> | |
22 | #include <pthread.h> | |
23 | #include <pthreadP.h> | |
24 | #include <sys/param.h> | |
25 | ||
26 | #include "tst-tls5.h" | |
27 | ||
28 | #ifdef TLS_REGISTER | |
29 | ||
30 | struct tls_obj tls_registry[64]; | |
31 | ||
32 | static int | |
33 | tls_addr_cmp (const void *a, const void *b) | |
34 | { | |
35 | if (((struct tls_obj *)a)->addr < ((struct tls_obj *)b)->addr) | |
36 | return -1; | |
37 | if (((struct tls_obj *)a)->addr > ((struct tls_obj *)b)->addr) | |
38 | return 1; | |
39 | return 0; | |
40 | } | |
41 | ||
42 | static int | |
43 | do_test (void) | |
44 | { | |
45 | size_t cnt, i; | |
46 | int res = 0; | |
47 | uintptr_t min_addr = ~(uintptr_t) 0, max_addr = 0; | |
48 | ||
49 | for (cnt = 0; tls_registry[cnt].name; ++cnt); | |
50 | tls_registry[cnt].name = NULL; | |
51 | tls_registry[cnt].addr = (uintptr_t) pthread_self (); | |
52 | tls_registry[cnt].size = sizeof (struct pthread); | |
53 | tls_registry[cnt++].align = __alignof__ (struct pthread); | |
54 | ||
55 | qsort (tls_registry, cnt, sizeof (struct tls_obj), tls_addr_cmp); | |
56 | ||
57 | for (i = 0; i < cnt; ++i) | |
58 | { | |
59 | printf ("%s%s = %p, size %zd, align %zd", | |
60 | tls_registry[i].name ? "&" : "", | |
61 | tls_registry[i].name ?: "pthread_self ()", | |
62 | (void *) tls_registry[i].addr, | |
63 | tls_registry[i].size, tls_registry[i].align); | |
64 | if (tls_registry[i].addr & (tls_registry[i].align - 1)) | |
65 | { | |
66 | fputs (", WRONG ALIGNMENT", stdout); | |
67 | res = 1; | |
68 | } | |
69 | if (i > 0 | |
70 | && (tls_registry[i - 1].addr + tls_registry[i - 1].size | |
71 | > tls_registry[i].addr)) | |
72 | { | |
73 | fputs (", ADDRESS OVERLAP", stdout); | |
74 | res = 1; | |
75 | } | |
76 | puts (""); | |
77 | if (tls_registry[i].name) | |
78 | { | |
79 | min_addr = MIN (tls_registry[i].addr, min_addr); | |
80 | max_addr = MAX (tls_registry[i].addr + tls_registry[i].size, | |
81 | max_addr); | |
82 | } | |
83 | } | |
84 | ||
85 | if (cnt > 1) | |
86 | { | |
87 | #if TLS_TCB_AT_TP | |
88 | if (tls_registry[cnt - 1].name) | |
89 | { | |
90 | puts ("pthread_self () not larger than all TLS addresses"); | |
91 | res = 1; | |
92 | } | |
93 | else | |
94 | max_addr = MAX (tls_registry[cnt - 1].addr, max_addr); | |
95 | #elif TLS_DTV_AT_TP | |
96 | if (tls_registry[0].name) | |
97 | { | |
98 | puts ("pthread_self () not smaller than all TLS addresses"); | |
99 | res = 1; | |
100 | } | |
101 | #else | |
102 | abort (); | |
103 | #endif | |
104 | printf ("Initial TLS used block size %zd\n", | |
105 | (size_t) (max_addr - min_addr)); | |
106 | } | |
107 | return res; | |
108 | } | |
109 | ||
110 | #define TEST_FUNCTION do_test () | |
111 | ||
112 | #else | |
113 | ||
114 | #define TEST_FUNCTION 0 | |
115 | ||
116 | #endif | |
117 | ||
118 | #include "../test-skeleton.c" |