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/* Test for large alignment in TLS blocks, BZ#18383.
Copyright (C) 2015-2023 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
<https://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>
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