1 files changed, 70 insertions, 0 deletions
diff --git a/sysdeps/i386/multiarch/memcpy_chk.c b/sysdeps/i386/multiarch/memcpy_chk.c
new file mode 100644
index 0000000000..aad6f87a45
--- /dev/null
+++ b/sysdeps/i386/multiarch/memcpy_chk.c
@@ -0,0 +1,70 @@
+/* Multiple versions of __memcpy_chk
+   All versions must be listed in ifunc-impl-list.c.
+   Copyright (C) 2015 Free Software Foundation, Inc.
+   Contributed by Intel Corporation.
+   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 lib and for
+   DSO.  There are no multiarch memcpy functions for static binaries.
+ */
+#if IS_IN (libc)
+# ifdef SHARED
+#  include <stddef.h>
+
+extern void * __memcpy_chk (void *, const void *, size_t, size_t);
+
+extern __typeof (__memcpy_chk) __memcpy_chk_i386 attribute_hidden;
+extern __typeof (__memcpy_chk) __memcpy_chk_i586 attribute_hidden;
+extern __typeof (__memcpy_chk) __memcpy_chk_i686 attribute_hidden;
+extern __typeof (__memcpy_chk) __memcpy_chk_sse2_unaligned attribute_hidden;
+extern __typeof (__memcpy_chk) __memcpy_chk_ssse3 attribute_hidden;
+extern __typeof (__memcpy_chk) __memcpy_chk_ssse3_rep attribute_hidden;
+
+#  include <init-arch.h>
+
+/* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
+   ifunc symbol properly.  */
+extern void *memcpy_chk_ifunc (void) __asm__ ("__memcpy_chk");
+
+void *
+memcpy_chk_ifunc (void)
+{
+  if (HAS_CPU_FEATURE (SSE2))
+    {
+      if (HAS_ARCH_FEATURE (Fast_Unaligned_Load))
+	return __memcpy_chk_sse2_unaligned;
+      else if (HAS_CPU_FEATURE (SSSE3))
+	{
+	  if (HAS_ARCH_FEATURE (Fast_Rep_String))
+	    return __memcpy_chk_ssse3_rep;
+	  else
+	    return __memcpy_chk_ssse3;
+	}
+    }
+
+  if (USE_I686)
+    return __memcpy_chk_i686;
+  else if (USE_I586)
+    return __memcpy_chk_i586;
+  else
+    return __memcpy_chk_i386;
+}
+__asm__ (".type __memcpy_chk, %gnu_indirect_function");
+# else
+#  include <debug/memcpy_chk.c>
+# endif
+#endif