PowerPC: multiarch mempcpy for PowerPC64

diff --git a/ChangeLog b/ChangeLog
index 092ebb1b14ca4d0419ba71f8a2db90652580771c..77687bd739684beb85ad4ef17cb4729ca7b4177c 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,14 @@
+2013-12-13  Adhemerval Zanella  <azanella@linux.vnet.ibm.com>
+
+       * sysdeps/powerpc/powerpc64/multiarch/Makefile: Add mempcpy multiarch
+       implementation.
+       * sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
+       (__libc_ifunc_impl_list): Likewise.
+       * sysdeps/powerpc/powerpc64/multiarch/mempcpy-power7.S: New file.
+       * sysdeps/powerpc/powerpc64/multiarch/mempcpy-ppc64.c: New file.
+       * sysdeps/powerpc/powerpc64/multiarch/mempcpy.c: New file: multiarch
+       mempcpy for PPC64.
+
 2013-12-13  Adhemerval Zanella  <azanella@linux.vnet.ibm.com>
 
        * sysdeps/powerpc/powerpc64/memset.S (NO_BZERO_IMPL): Add macro to

diff --git a/sysdeps/powerpc/powerpc64/multiarch/Makefile b/sysdeps/powerpc/powerpc64/multiarch/Makefile
index 2d06551213975422dc0aa01637b9143012fe6eb9..d9f14a5e21bbead4ddf276d6812c464aacb8af5b 100644 (file)
--- a/sysdeps/powerpc/powerpc64/multiarch/Makefile
+++ b/sysdeps/powerpc/powerpc64/multiarch/Makefile
@@ -2,5 +2,6 @@ ifeq ($(subdir),string)
 sysdep_routines += memcpy-power7 memcpy-a2 memcpy-power6 memcpy-cell \
                   memcpy-power4 memcpy-ppc64 memcmp-power7 memcmp-power4 \
                   memcmp-ppc64 memset-power7 memset-power6 memset-power4 \
-                  memset-ppc64 bzero-power4 bzero-power6 bzero-power7
+                  memset-ppc64 bzero-power4 bzero-power6 bzero-power7 \
+                  mempcpy-power7 mempcpy-ppc64
 endif

diff --git a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
index 5f277c1940004d63a665fe018aec1b8fc9be56f4..4880564483d42e65d14754b464ad2b511565ae5b 100644 (file)
--- a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
@@ -90,5 +90,13 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
                              __bzero_power4)
              IFUNC_IMPL_ADD (array, i, bzero, 1, __bzero_ppc))
 
+  /* Support sysdeps/powerpc/powerpc64/multiarch/mempcpy.c.  */
+  IFUNC_IMPL (i, name, mempcpy,
+             IFUNC_IMPL_ADD (array, i, mempcpy,
+                             hwcap & PPC_FEATURE_HAS_VSX,
+                             __mempcpy_power7)
+             IFUNC_IMPL_ADD (array, i, mempcpy, 1,
+                             __mempcpy_ppc))
+
   return i;
 }

diff --git a/sysdeps/powerpc/powerpc64/multiarch/mempcpy-power7.S b/sysdeps/powerpc/powerpc64/multiarch/mempcpy-power7.S
new file mode 100644 (file)
index 0000000..6d7f002
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/multiarch/mempcpy-power7.S
@@ -0,0 +1,42 @@
+/* Optimized mempcpy implementation for PowerPC/POWER7.
+   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/>.  */
+
+#include <sysdep.h>
+
+#undef EALIGN
+#define EALIGN(name, alignt, words)                            \
+  .section ".text";                                            \
+  ENTRY_2(__mempcpy_power7)                                    \
+  .align ALIGNARG(alignt);                                     \
+  EALIGN_W_##words;                                            \
+  BODY_LABEL(__mempcpy_power7):                                        \
+  cfi_startproc;                                               \
+  LOCALENTRY(__mempcpy_power7)
+
+#undef END_GEN_TB
+#define END_GEN_TB(name, mask)                                 \
+  cfi_endproc;                                                 \
+  TRACEBACK_MASK(__mempcpy_power7,mask)                                \
+  END_2(__mempcpy_power7)
+
+#undef libc_hidden_builtin_def
+#define libc_hidden_builtin_def(name)
+#undef weak_alias
+#define weak_alias(name, alias)
+
+#include <sysdeps/powerpc/powerpc64/power7/mempcpy.S>

diff --git a/sysdeps/powerpc/powerpc64/multiarch/mempcpy-ppc64.c b/sysdeps/powerpc/powerpc64/multiarch/mempcpy-ppc64.c
new file mode 100644 (file)
index 0000000..40f6c42
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/multiarch/mempcpy-ppc64.c
@@ -0,0 +1,19 @@
+/* PowerPC64 default implementation of mempcpy.
+   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/>.  */
+
+#include <sysdeps/powerpc/powerpc32/power4/multiarch/mempcpy-ppc32.c>

diff --git a/sysdeps/powerpc/powerpc64/multiarch/mempcpy.c b/sysdeps/powerpc/powerpc64/multiarch/mempcpy.c
new file mode 100644 (file)
index 0000000..7100eb5
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/multiarch/mempcpy.c
@@ -0,0 +1,38 @@
+/* Multiple versions of mempcpy.
+   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/>.  */
+
+#ifndef NOT_IN_libc
+# include <string.h>
+# include <shlib-compat.h>
+# include "init-arch.h"
+
+extern __typeof (__mempcpy) __mempcpy_ppc attribute_hidden;
+extern __typeof (__mempcpy) __mempcpy_power7 attribute_hidden;
+
+/* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
+   ifunc symbol properly.  */
+libc_ifunc (__mempcpy,
+           (hwcap & PPC_FEATURE_HAS_VSX)
+            ? __mempcpy_power7
+            : __mempcpy_ppc);
+
+weak_alias (__mempcpy, mempcpy)
+libc_hidden_def (mempcpy)
+#else
+# include <string/mempcpy.c>
+#endif