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BZ#18383: Add test case for large alignment in TLS blocks.
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Roland McGrath
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May 6, 2015
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,6 @@ | ||
| __thread int mod_tdata1 = 1; | ||
| __thread int mod_tdata2 __attribute__ ((aligned (0x10))) = 2; | ||
| __thread int mod_tdata3 __attribute__ ((aligned (0x1000))) = 4; | ||
| __thread int mod_tbss1; | ||
| __thread int mod_tbss2 __attribute__ ((aligned (0x10))); | ||
| __thread int mod_tbss3 __attribute__ ((aligned (0x1000))); |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,2 @@ | ||
| #define NO_LIB | ||
| #include "tst-tlsalign.c" |
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| /* Test for large alignment in TLS blocks, BZ#18383. | ||
| Copyright (C) 2015 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/>. */ | ||
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| #include <stdint.h> | ||
| #include <stdio.h> | ||
| #include <stdlib.h> | ||
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| 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))); | ||
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| #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 | ||
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| 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); | ||
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| printf ("%s TLS address %p %% %u = %u\n", | ||
| which, (void *) var, alignment, misalign); | ||
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| int got = *var; | ||
| if (got != value) | ||
| { | ||
| printf ("%s value %d should be %d\n", which, got, value); | ||
| return 1; | ||
| } | ||
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| return misalign != 0; | ||
| } | ||
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| static int | ||
| do_test (void) | ||
| { | ||
| int fail = 0; | ||
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| fail |= test_one ("tdata1", 4, &tdata1, 1); | ||
| fail |= test_one ("tdata2", 0x10, &tdata2, 2); | ||
| fail |= test_one ("tdata3", 0x1000, &tdata3, 4); | ||
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| fail |= test_one ("tbss1", 4, &tbss1, 0); | ||
| fail |= test_one ("tbss2", 0x10, &tbss2, 0); | ||
| fail |= test_one ("tbss3", 0x1000, &tbss3, 0); | ||
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| #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); | ||
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| 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 | ||
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| return fail ? EXIT_FAILURE : EXIT_SUCCESS; | ||
| } | ||
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| #define TEST_FUNCTION do_test () | ||
| #include "../test-skeleton.c" |