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be184b1d26
2005-01-21 Jakub Jelinek <jakub@redhat.com> * elf/Makefile: Add rules to build and run tst-align2. * elf/tst-align2.c: New test. * elf/tst-alignmod2.c: New file. * sysdeps/powerpc/tst-stack-align.h: New file. * sysdeps/i386/dl-machine.h (RTLD_START): Align stack and clear frame pointer before calling _dl_init. * sysdeps/x86_64/dl-machine.h (RTLD_START): Likewise.
48 lines
2.0 KiB
C
48 lines
2.0 KiB
C
/* Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <stdio.h>
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#include <stdint.h>
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#define TEST_STACK_ALIGN() \
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({ \
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/* Altivec __vector int etc. needs 16byte aligned stack. \
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Instead of using altivec.h here, use aligned attribute instead. */ \
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struct _S \
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{ \
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int _i __attribute__((aligned (16))); \
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int _j[3]; \
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} _s = { ._i = 18, ._j[0] = 19, ._j[1] = 20, ._j[2] = 21 }; \
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double _d = 12.0; \
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long double _ld = 15.0; \
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int _ret = 0; \
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printf ("__vector int: { %d, %d, %d, %d } %p %zu\n", _s._i, _s._j[0], \
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_s._j[1], _s._j[2], &_s, __alignof (_s)); \
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if ((((uintptr_t) &_s) & (__alignof (_s) - 1)) != 0) \
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_ret = 1; \
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\
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printf ("double: %g %p %zu\n", _d, &_d, __alignof (double)); \
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if ((((uintptr_t) &_d) & (__alignof (double) - 1)) != 0) \
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_ret = 1; \
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\
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printf ("ldouble: %Lg %p %zu\n", _ld, &_ld, __alignof (long double)); \
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if ((((uintptr_t) &_ld) & (__alignof (long double) - 1)) != 0) \
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_ret = 1; \
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_ret; \
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})
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