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authorUlrich Drepper <drepper@redhat.com>2003-09-17 18:23:49 +0000
committerUlrich Drepper <drepper@redhat.com>2003-09-17 18:23:49 +0000
commit06f6ca9019897f5d1799c0ae8d7293ed249c0f97 (patch)
tree9a04e5058de47ce0898cf279205c8e58735efb96 /sysdeps/x86_64/tst-stack-align.h
parent65af7e61427ce9bbbc0e43b2ad44e5b4678a37fc (diff)
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Update.
2003-09-17 Philip Blundell <philb@gnu.org> * sysdeps/unix/sysv/linux/arm/vfork.S: Branch to fork if libpthread is loaded. Elide backwards compatibility code when not required.
Diffstat (limited to 'sysdeps/x86_64/tst-stack-align.h')
-rw-r--r--sysdeps/x86_64/tst-stack-align.h47
1 files changed, 47 insertions, 0 deletions
diff --git a/sysdeps/x86_64/tst-stack-align.h b/sysdeps/x86_64/tst-stack-align.h
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+/* Copyright (C) 2003 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <stdio.h>
+#include <stdint.h>
+
+#define TEST_STACK_ALIGN() \
+ ({ \
+ /* AMD64 ABI mandates 16byte aligned stack. \
+ Unfortunately, current GCC doesn't support __int128 or __float128 \
+ types, so use aligned attribute instead. */ \
+ struct _S \
+ { \
+ int _i __attribute__((aligned (16))); \
+ int _pad[3]; \
+ } _s = { ._i = 18 }; \
+ double _d = 12.0; \
+ long double _ld = 15.0; \
+ int _ret = 0; \
+ printf ("__int128: %d %p %zu\n", _s._i, &_s, __alignof (_s)); \
+ if ((((uintptr_t) &_s) & (__alignof (_s) - 1)) != 0) \
+ _ret = 1; \
+ \
+ printf ("double: %g %p %zu\n", _d, &_d, __alignof (double)); \
+ if ((((uintptr_t) &_d) & (__alignof (double) - 1)) != 0) \
+ _ret = 1; \
+ \
+ printf ("ldouble: %Lg %p %zu\n", _ld, &_ld, __alignof (long double)); \
+ if ((((uintptr_t) &_ld) & (__alignof (long double) - 1)) != 0) \
+ _ret = 1; \
+ _ret; \
+ })