PowerPC: multiarch memcpy for PowerPC64

1 files changed, 48 insertions, 0 deletions

diff --git a/sysdeps/powerpc/powerpc64/multiarch/memcpy.c b/sysdeps/powerpc/powerpc64/multiarch/memcpy.c
new file mode 100644
index 0000000000..b580ef7e5c
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/multiarch/memcpy.c
@@ -0,0 +1,48 @@
+/* Multiple versions of memcpy. PowerPC64 version.
+   Copyright (C) 2013 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 lib and for
+   DSO.  In static binaries we need memcpy before the initialization
+   happened.  */
+#if defined SHARED && !defined NOT_IN_libc
+# include <string.h>
+# include <shlib-compat.h>
+# include "init-arch.h"
+
+extern __typeof (memcpy) __memcpy_ppc attribute_hidden;
+extern __typeof (memcpy) __memcpy_power4 attribute_hidden;
+extern __typeof (memcpy) __memcpy_cell attribute_hidden;
+extern __typeof (memcpy) __memcpy_power6 attribute_hidden;
+extern __typeof (memcpy) __memcpy_a2 attribute_hidden;
+extern __typeof (memcpy) __memcpy_power7 attribute_hidden;
+
+/* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
+   ifunc symbol properly.  */
+libc_ifunc (memcpy,
+            (hwcap & PPC_FEATURE_HAS_VSX)
+            ? __memcpy_power7 :
+	      (hwcap & PPC_FEATURE_ARCH_2_06)
+	      ? __memcpy_a2 :
+		(hwcap & PPC_FEATURE_ARCH_2_05)
+		? __memcpy_power6 :
+		  (hwcap & PPC_FEATURE_CELL_BE)
+		  ? __memcpy_cell :
+		    (hwcap & PPC_FEATURE_POWER4)
+		    ? __memcpy_power4
+            : __memcpy_ppc);
+#endif