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120 lines
3.1 KiB
C
120 lines
3.1 KiB
C
/* Copyright (C) 2003-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/* Check alignment, overlapping and layout of TLS variables. */
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <pthread.h>
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#include <pthreadP.h>
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#include <sys/param.h>
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#include "tst-tls5.h"
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#ifdef TLS_REGISTER
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struct tls_obj tls_registry[64];
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static int
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tls_addr_cmp (const void *a, const void *b)
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{
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if (((struct tls_obj *)a)->addr < ((struct tls_obj *)b)->addr)
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return -1;
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if (((struct tls_obj *)a)->addr > ((struct tls_obj *)b)->addr)
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return 1;
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return 0;
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}
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static int
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do_test (void)
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{
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size_t cnt, i;
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int res = 0;
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uintptr_t min_addr = ~(uintptr_t) 0, max_addr = 0;
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for (cnt = 0; tls_registry[cnt].name; ++cnt);
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tls_registry[cnt].name = NULL;
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tls_registry[cnt].addr = (uintptr_t) pthread_self ();
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tls_registry[cnt].size = sizeof (struct pthread);
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tls_registry[cnt++].align = __alignof__ (struct pthread);
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qsort (tls_registry, cnt, sizeof (struct tls_obj), tls_addr_cmp);
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for (i = 0; i < cnt; ++i)
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{
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printf ("%s%s = %p, size %zd, align %zd",
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tls_registry[i].name ? "&" : "",
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tls_registry[i].name ?: "pthread_self ()",
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(void *) tls_registry[i].addr,
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tls_registry[i].size, tls_registry[i].align);
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if (tls_registry[i].addr & (tls_registry[i].align - 1))
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{
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fputs (", WRONG ALIGNMENT", stdout);
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res = 1;
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}
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if (i > 0
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&& (tls_registry[i - 1].addr + tls_registry[i - 1].size
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> tls_registry[i].addr))
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{
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fputs (", ADDRESS OVERLAP", stdout);
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res = 1;
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}
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puts ("");
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if (tls_registry[i].name)
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{
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min_addr = MIN (tls_registry[i].addr, min_addr);
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max_addr = MAX (tls_registry[i].addr + tls_registry[i].size,
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max_addr);
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}
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}
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if (cnt > 1)
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{
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#if TLS_TCB_AT_TP
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if (tls_registry[cnt - 1].name)
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{
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puts ("pthread_self () not larger than all TLS addresses");
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res = 1;
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}
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else
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max_addr = MAX (tls_registry[cnt - 1].addr, max_addr);
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#elif TLS_DTV_AT_TP
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if (tls_registry[0].name)
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{
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puts ("pthread_self () not smaller than all TLS addresses");
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res = 1;
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}
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#else
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abort ();
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#endif
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printf ("Initial TLS used block size %zd\n",
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(size_t) (max_addr - min_addr));
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}
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return res;
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}
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#define TEST_FUNCTION do_test ()
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#else
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#define TEST_FUNCTION 0
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#endif
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#include "../test-skeleton.c"
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