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-rw-r--r--sysdeps/x86_64/multiarch/mempcpy.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/sysdeps/x86_64/multiarch/mempcpy.c b/sysdeps/x86_64/multiarch/mempcpy.c
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+++ b/sysdeps/x86_64/multiarch/mempcpy.c
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+/* Multiple versions of mempcpy.
+ All versions must be listed in ifunc-impl-list.c.
+ Copyright (C) 2017-2018 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/>. */
+
+/* Define multiple versions only for the definition in libc. */
+#if IS_IN (libc)
+# define mempcpy __redirect_mempcpy
+# define __mempcpy __redirect___mempcpy
+# define NO_MEMPCPY_STPCPY_REDIRECT
+# define __NO_STRING_INLINES
+# include <string.h>
+# undef mempcpy
+# undef __mempcpy
+
+# define SYMBOL_NAME mempcpy
+# include "ifunc-memmove.h"
+
+libc_ifunc_redirected (__redirect_mempcpy, __mempcpy, IFUNC_SELECTOR ());
+
+weak_alias (__mempcpy, mempcpy)
+# ifdef SHARED
+__hidden_ver1 (__mempcpy, __GI___mempcpy, __redirect___mempcpy)
+ __attribute__ ((visibility ("hidden")));
+__hidden_ver1 (mempcpy, __GI_mempcpy, __redirect_mempcpy)
+ __attribute__ ((visibility ("hidden")));
+# endif
+#endif