/* Test for large alignment in TLS blocks, BZ#18383. Copyright (C) 2015-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. 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/>. */ #include <stdint.h> #include <stdio.h> #include <stdlib.h> static __thread int tdata1 = 1; static __thread int tdata2 __attribute__ ((aligned (0x10))) = 2; static __thread int tdata3 __attribute__ ((aligned (0x1000))) = 4; static __thread int tbss1; static __thread int tbss2 __attribute__ ((aligned (0x10))); static __thread int tbss3 __attribute__ ((aligned (0x1000))); #ifndef NO_LIB extern __thread int mod_tdata1; extern __thread int mod_tdata2; extern __thread int mod_tdata3; extern __thread int mod_tbss1; extern __thread int mod_tbss2; extern __thread int mod_tbss3; #endif static int test_one (const char *which, unsigned int alignment, int *var, int value) { uintptr_t addr = (uintptr_t) var; unsigned int misalign = addr & (alignment - 1); printf ("%s TLS address %p %% %u = %u\n", which, (void *) var, alignment, misalign); int got = *var; if (got != value) { printf ("%s value %d should be %d\n", which, got, value); return 1; } return misalign != 0; } static int do_test (void) { int fail = 0; fail |= test_one ("tdata1", 4, &tdata1, 1); fail |= test_one ("tdata2", 0x10, &tdata2, 2); fail |= test_one ("tdata3", 0x1000, &tdata3, 4); fail |= test_one ("tbss1", 4, &tbss1, 0); fail |= test_one ("tbss2", 0x10, &tbss2, 0); fail |= test_one ("tbss3", 0x1000, &tbss3, 0); #ifndef NO_LIB fail |= test_one ("mod_tdata1", 4, &mod_tdata1, 1); fail |= test_one ("mod_tdata2", 0x10, &mod_tdata2, 2); fail |= test_one ("mod_tdata3", 0x1000, &mod_tdata3, 4); fail |= test_one ("mod_tbss1", 4, &mod_tbss1, 0); fail |= test_one ("mod_tbss2", 0x10, &mod_tbss2, 0); fail |= test_one ("mod_tbss3", 0x1000, &mod_tbss3, 0); #endif return fail ? EXIT_FAILURE : EXIT_SUCCESS; } #include <support/test-driver.c>