1 files changed, 50 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/x86_64/multiarch/strstr.c b/REORG.TODO/sysdeps/x86_64/multiarch/strstr.c
new file mode 100644
index 0000000000..a7d181d797
--- /dev/null
+++ b/REORG.TODO/sysdeps/x86_64/multiarch/strstr.c
@@ -0,0 +1,50 @@
+/* Multiple versions of strstr.
+   All versions must be listed in ifunc-impl-list.c.
+   Copyright (C) 2012-2017 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/>.  */
+
+/* Redefine strstr so that the compiler won't complain about the type
+   mismatch with the IFUNC selector in strong_alias, below.  */
+#undef  strstr
+#define strstr __redirect_strstr
+#include <string.h>
+#undef  strstr
+
+#define STRSTR __strstr_sse2
+#ifdef SHARED
+# undef libc_hidden_builtin_def
+# define libc_hidden_builtin_def(name) \
+  __hidden_ver1 (__strstr_sse2, __GI_strstr, __strstr_sse2);
+#endif
+
+#include "string/strstr.c"
+
+extern __typeof (__redirect_strstr) __strstr_sse2_unaligned attribute_hidden;
+extern __typeof (__redirect_strstr) __strstr_sse2 attribute_hidden;
+
+#include "init-arch.h"
+
+/* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
+   ifunc symbol properly.  */
+extern __typeof (__redirect_strstr) __libc_strstr;
+libc_ifunc (__libc_strstr,
+	    HAS_ARCH_FEATURE (Fast_Unaligned_Load)
+	    ? __strstr_sse2_unaligned
+	    : __strstr_sse2)
+
+#undef strstr
+strong_alias (__libc_strstr, strstr)