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[glibc.git] / nptl / tst-tls5.c
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1 /* Copyright (C) 2003 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
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.
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.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
20 /* Check alignment, overlapping and layout of TLS variables. */
21 #include <stdint.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <pthread.h>
25 #include <pthreadP.h>
26 #include <sys/param.h>
28 #include "tst-tls5.h"
30 #ifdef TLS_REGISTER
32 struct tls_obj tls_registry[64];
34 static int
35 tls_addr_cmp (const void *a, const void *b)
37 if (((struct tls_obj *)a)->addr < ((struct tls_obj *)b)->addr)
38 return -1;
39 if (((struct tls_obj *)a)->addr > ((struct tls_obj *)b)->addr)
40 return 1;
41 return 0;
44 static int
45 do_test (void)
47 size_t cnt, i;
48 int res = 0;
49 uintptr_t min_addr = ~(uintptr_t) 0, max_addr = 0;
51 for (cnt = 0; tls_registry[cnt].name; ++cnt);
52 tls_registry[cnt].name = NULL;
53 tls_registry[cnt].addr = (uintptr_t) pthread_self ();
54 tls_registry[cnt].size = sizeof (struct pthread);
55 tls_registry[cnt++].align = __alignof__ (struct pthread);
57 qsort (tls_registry, cnt, sizeof (struct tls_obj), tls_addr_cmp);
59 for (i = 0; i < cnt; ++i)
61 printf ("%s%s = %p, size %zd, align %zd",
62 tls_registry[i].name ? "&" : "",
63 tls_registry[i].name ?: "pthread_self ()",
64 (void *) tls_registry[i].addr,
65 tls_registry[i].size, tls_registry[i].align);
66 if (tls_registry[i].addr & (tls_registry[i].align - 1))
68 fputs (", WRONG ALIGNMENT", stdout);
69 res = 1;
71 if (i > 0
72 && (tls_registry[i - 1].addr + tls_registry[i - 1].size
73 > tls_registry[i].addr))
75 fputs (", ADDRESS OVERLAP", stdout);
76 res = 1;
78 puts ("");
79 if (tls_registry[i].name)
81 min_addr = MIN (tls_registry[i].addr, min_addr);
82 max_addr = MAX (tls_registry[i].addr + tls_registry[i].size,
83 max_addr);
87 if (cnt > 1)
89 #if TLS_TCB_AT_TP
90 if (tls_registry[cnt - 1].name)
92 puts ("pthread_self () not larger than all TLS addresses");
93 res = 1;
95 else
96 max_addr = MAX (tls_registry[cnt - 1].addr, max_addr);
97 #elif TLS_DTV_AT_TP
98 if (tls_registry[0].name)
100 puts ("pthread_self () not smaller than all TLS addresses");
101 res = 1;
103 #else
104 abort ();
105 #endif
106 printf ("Initial TLS used block size %zd\n",
107 (size_t) (max_addr - min_addr));
109 return res;
112 #define TEST_FUNCTION do_test ()
114 #else
116 #define TEST_FUNCTION 0
118 #endif
120 #include "../test-skeleton.c"