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