PowerPC: optimized memmove for POWER7/PPC32

This patch adds a optimized memmove for power7 by using the optimized
power7 memcpy for forward copying.

4 files changed, 100 insertions, 1 deletions

diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/Makefile b/sysdeps/powerpc/powerpc32/power4/multiarch/Makefile
index a465685494..a7d33b9273 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/Makefile
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/Makefile
@@ -11,7 +11,7 @@ sysdep_routines += memcpy-power7 memcpy-a2 memcpy-power6 memcpy-cell \
 		   strchr-power7 strchr-ppc32 wcschr-power7 wcschr-power6 \
 		   wcschr-ppc32 wcsrchr-power7 wcsrchr-power6 wcsrchr-ppc32 \
 		   wcscpy-power7 wcscpy-power6 wcscpy-ppc32 wordcopy-power7 \
-		   wordcopy-power6 wordcopy-ppc32
+		   wordcopy-power6 wordcopy-ppc32 memmove-power7 memmove-ppc
 
 CFLAGS-strncase-power7.c += -mcpu=power7 -funroll-loops
 CFLAGS-strncase_l-power7.c += -mcpu=power7 -funroll-loops
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memmove-power7.c b/sysdeps/powerpc/powerpc32/power4/multiarch/memmove-power7.c
new file mode 100644
index 0000000000..2861071bad
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memmove-power7.c
@@ -0,0 +1,31 @@
+/* Power7 multiarch memmove.
+   Copyright (C) 2014 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; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#include <string.h>
+
+extern __typeof (memcpy) __memcpy_power7;
+#define memcpy __memcpy_power7
+
+extern __typeof (memmove) __memmove_power7;
+#define MEMMOVE __memmove_power7
+
+#undef libc_hidden_builtin_def
+#define libc_hidden_builtin_def(name)
+
+#define MEMCPY_OK_FOR_FWD_MEMMOVE 1
+#include <string/memmove.c>
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memmove-ppc.c b/sysdeps/powerpc/powerpc32/power4/multiarch/memmove-ppc.c
new file mode 100644
index 0000000000..e323a4d736
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memmove-ppc.c
@@ -0,0 +1,34 @@
+/* Power7 multiarch memmove.
+   Copyright (C) 2014 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; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#include <string.h>
+
+extern __typeof (memcpy) __memcpy_ppc;
+#define memcpy __memcpy_ppc
+
+extern __typeof (memmove) __memmove_ppc;
+#define MEMMOVE __memmove_ppc
+
+#if defined SHARED
+# undef libc_hidden_builtin_def
+# define libc_hidden_builtin_def(name)  \
+  __hidden_ver1 (__memmove_ppc, __GI_memmove, __memmove_ppc);
+#endif
+
+#define MEMCPY_OK_FOR_FWD_MEMMOVE 1
+#include <string/memmove.c>
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memmove.c b/sysdeps/powerpc/powerpc32/power4/multiarch/memmove.c
new file mode 100644
index 0000000000..10701484ff
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memmove.c
@@ -0,0 +1,34 @@
+/* Multiple versions of memmove. PowerPC32 version.
+   Copyright (C) 2014 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/>.  */
+
+#if defined SHARED && !defined NOT_IN_libc
+/* Redefine memmove so that the compiler won't complain about the type
+   mismatch with the IFUNC selector in strong_alias, below.  */
+# include <string.h>
+# include "init-arch.h"
+
+extern __typeof (memmove) __memmove_ppc attribute_hidden;
+extern __typeof (memmove) __memmove_power7 attribute_hidden;
+
+libc_ifunc (memmove,
+            (hwcap & PPC_FEATURE_HAS_VSX)
+            ? __memmove_power7
+            : __memmove_ppc);
+#else
+# include <string/memmove.c>
+#endif