aad599979d
_rtld_tls_allocate and _rtld_tls_free. libpthread uses this functions to setup the thread private area of all new threads. ld.elf_so is responsible for setting up the private area for the initial thread. Similar functions are called from _libc_init for static binaries, using dl_iterate_phdr to access the ELF Program Header. Add test cases to exercise the different TLS storage models. Test cases are compiled and installed on all platforms, but are skipped on platforms not marked for TLS support. This material is based upon work partially supported by The NetBSD Foundation under a contract with Joerg Sonnenberger. It is inspired by the TLS support in FreeBSD by Doug Rabson and the clean ups of the DragonFly port of the original FreeBSD modifications.
97 lines
2.7 KiB
C
97 lines
2.7 KiB
C
/* $NetBSD: t_tls_dynamic.c,v 1.1 2011/03/09 23:10:07 joerg Exp $ */
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/*-
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* Copyright (c) 2011 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Joerg Sonnenberger.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: t_tls_dynamic.c,v 1.1 2011/03/09 23:10:07 joerg Exp $");
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#include <atf-c.h>
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#include <pthread.h>
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#include <sys/tls.h>
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#if !defined(__HAVE_TLS_VARIANT_I) && !defined(__HAVE_TLS_VARIANT_II)
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#define __thread
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#endif
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ATF_TC(t_tls_dynamic);
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ATF_TC_HEAD(t_tls_dynamic, tc)
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{
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atf_tc_set_md_var(tc, "descr",
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"Test (un)initialized TLS variables in dynamic binaries");
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}
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void testf_dso_helper(int, int);
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extern __thread int var1;
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extern __thread int var2;
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static void *
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testf(void *dummy)
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{
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ATF_CHECK_EQ(var1, 1);
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ATF_CHECK_EQ(var2, 0);
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testf_dso_helper(2, 2);
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ATF_CHECK_EQ(var1, 2);
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ATF_CHECK_EQ(var2, 2);
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testf_dso_helper(3, 3);
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ATF_CHECK_EQ(var1, 3);
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ATF_CHECK_EQ(var2, 3);
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return NULL;
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}
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ATF_TC_BODY(t_tls_dynamic, tc)
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{
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pthread_t t;
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#if !defined(__HAVE_TLS_VARIANT_I) && !defined(__HAVE_TLS_VARIANT_II)
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atf_tc_skip("no TLS support on this platform");
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#endif
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testf(NULL);
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pthread_create(&t, 0, testf, 0);
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pthread_join(t, NULL);
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pthread_create(&t, 0, testf, 0);
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pthread_join(t, NULL);
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, t_tls_dynamic);
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return atf_no_error();
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}
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