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d614a753 | 1 | /* Copyright (C) 2003-2020 Free Software Foundation, Inc. |
06f6ca90 UD |
2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Lesser General Public | |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Lesser General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
06f6ca90 UD |
17 | |
18 | #include <stdio.h> | |
19 | #include <stdint.h> | |
20 | ||
21 | #define TEST_STACK_ALIGN() \ | |
22 | ({ \ | |
23 | /* AMD64 ABI mandates 16byte aligned stack. \ | |
24 | Unfortunately, current GCC doesn't support __int128 or __float128 \ | |
25 | types, so use aligned attribute instead. */ \ | |
26 | struct _S \ | |
27 | { \ | |
28 | int _i __attribute__((aligned (16))); \ | |
29 | int _pad[3]; \ | |
30 | } _s = { ._i = 18 }; \ | |
31 | double _d = 12.0; \ | |
32 | long double _ld = 15.0; \ | |
33 | int _ret = 0; \ | |
34 | printf ("__int128: %d %p %zu\n", _s._i, &_s, __alignof (_s)); \ | |
35 | if ((((uintptr_t) &_s) & (__alignof (_s) - 1)) != 0) \ | |
36 | _ret = 1; \ | |
37 | \ | |
38 | printf ("double: %g %p %zu\n", _d, &_d, __alignof (double)); \ | |
39 | if ((((uintptr_t) &_d) & (__alignof (double) - 1)) != 0) \ | |
40 | _ret = 1; \ | |
41 | \ | |
42 | printf ("ldouble: %Lg %p %zu\n", _ld, &_ld, __alignof (long double)); \ | |
43 | if ((((uintptr_t) &_ld) & (__alignof (long double) - 1)) != 0) \ | |
44 | _ret = 1; \ | |
45 | _ret; \ | |
46 | }) |