From 46450f90b70326319f8dc7f0e447e14f0cbd95e6 Mon Sep 17 00:00:00 2001

From: Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com>

Date: Wed, 30 Jul 2014 05:01:14 -0500

Subject: [PATCH] PowerPC: multiarch memcpy for PowerPC64

commit b5beafbceec80b5a33d3383dde88196afc966e67 Author:

 Adhemerval Zanella <azanella@linux.vnet.ibm.com> Date:   Fri Dec 13 14:31:41

 2013 -0500

    PowerPC: multiarch memcpy for PowerPC64

Added sysdeps/powerpc/powerpc32/power4/multiarch/init-arch.h which was not part

of original commit

---

 .../powerpc/powerpc32/power4/multiarch/init-arch.h | 52 +++++++++++++++++

 sysdeps/powerpc/powerpc64/multiarch/Makefile       |  4 ++

 .../powerpc/powerpc64/multiarch/ifunc-impl-list.c  | 66 ++++++++++++++++++++++

 sysdeps/powerpc/powerpc64/multiarch/init-arch.h    | 18 ++++++

 sysdeps/powerpc/powerpc64/multiarch/memcpy-a2.S    | 39 +++++++++++++

 sysdeps/powerpc/powerpc64/multiarch/memcpy-cell.S  | 39 +++++++++++++

 .../powerpc/powerpc64/multiarch/memcpy-power4.S    | 39 +++++++++++++

 .../powerpc/powerpc64/multiarch/memcpy-power6.S    | 39 +++++++++++++

 .../powerpc/powerpc64/multiarch/memcpy-power7.S    | 39 +++++++++++++

 sysdeps/powerpc/powerpc64/multiarch/memcpy-ppc64.S | 41 ++++++++++++++

 sysdeps/powerpc/powerpc64/multiarch/memcpy.c       | 55 ++++++++++++++++++

 11 files changed, 431 insertions(+)

 create mode 100644 sysdeps/powerpc/powerpc32/power4/multiarch/init-arch.h

 create mode 100644 sysdeps/powerpc/powerpc64/multiarch/Makefile

 create mode 100644 sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c

 create mode 100644 sysdeps/powerpc/powerpc64/multiarch/init-arch.h

 create mode 100644 sysdeps/powerpc/powerpc64/multiarch/memcpy-a2.S

 create mode 100644 sysdeps/powerpc/powerpc64/multiarch/memcpy-cell.S

 create mode 100644 sysdeps/powerpc/powerpc64/multiarch/memcpy-power4.S

 create mode 100644 sysdeps/powerpc/powerpc64/multiarch/memcpy-power6.S

 create mode 100644 sysdeps/powerpc/powerpc64/multiarch/memcpy-power7.S

 create mode 100644 sysdeps/powerpc/powerpc64/multiarch/memcpy-ppc64.S

 create mode 100644 sysdeps/powerpc/powerpc64/multiarch/memcpy.c

diff --git glibc-2.17-c758a686/sysdeps/powerpc/powerpc32/power4/multiarch/init-arch.h glibc-2.17-c758a686/sysdeps/powerpc/powerpc32/power4/multiarch/init-arch.h

new file mode 100644

index 0000000..51a34f2

--- /dev/null

+++ glibc-2.17-c758a686/sysdeps/powerpc/powerpc32/power4/multiarch/init-arch.h

@@ -0,0 +1,52 @@

+/* This file is part of the GNU C Library.

+   Copyright (C) 2013-2014 Free Software Foundation, Inc.

+

+   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 <ldsodefs.h>

+

+/* The code checks if _rtld_global_ro was realocated before trying to access

+   the dl_hwcap field. The assembly is to make the compiler not optimize the

+   test (&_rtld_global_ro != NULL), which is always true in ISO C (but not

+   in that case since _rtld_global_ro might not been realocated yet).  */

+#if defined(SHARED) && !defined(IS_IN_rtld)

+# define __GLRO(value) \

+  ({ volatile void **__p = (volatile void**)(&_rtld_global_ro);	\

+    unsigned long int __ret;					\

+     asm ("# x in %0" : "+r" (__p));				\

+     __ret = (__p) ? GLRO(value) : 0;				\

+     __ret; })

+#else

+# define __GLRO(value)  GLRO(value)

+#endif

+

+/* dl_hwcap contains only the latest supported ISA, the macro checks which is

+   and fills the previous ones.  */

+#define INIT_ARCH() \

+  unsigned long int hwcap = __GLRO(dl_hwcap); 			\

+  if (hwcap & PPC_FEATURE_ARCH_2_06)				\

+    hwcap |= PPC_FEATURE_ARCH_2_05 |				\

+	     PPC_FEATURE_POWER5_PLUS |				\

+	     PPC_FEATURE_POWER5 |				\

+	     PPC_FEATURE_POWER4;				\

+  else if (hwcap & PPC_FEATURE_ARCH_2_05)			\

+    hwcap |= PPC_FEATURE_POWER5_PLUS |				\

+	     PPC_FEATURE_POWER5 |				\

+	     PPC_FEATURE_POWER4;				\

+  else if (hwcap & PPC_FEATURE_POWER5_PLUS)			\

+    hwcap |= PPC_FEATURE_POWER5 |				\

+	     PPC_FEATURE_POWER4;				\

+  else if (hwcap & PPC_FEATURE_POWER5)				\

+    hwcap |= PPC_FEATURE_POWER4;

diff --git glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/Makefile glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/Makefile

new file mode 100644

index 0000000..638c102

--- /dev/null

+++ glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/Makefile

@@ -0,0 +1,4 @@

+ifeq ($(subdir),string)

+sysdep_routines += memcpy-power7 memcpy-a2 memcpy-power6 memcpy-cell \

+                  memcpy-power4 memcpy-ppc64

+endif

diff --git glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c

new file mode 100644

index 0000000..5090af4

--- /dev/null

+++ glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c

@@ -0,0 +1,66 @@

+/* Enumerate available IFUNC implementations of a function.  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/>.  */

+

+#include <assert.h>

+#include <string.h>

+#include <wchar.h>

+#include <ldsodefs.h>

+#include <ifunc-impl-list.h>

+

+/* Maximum number of IFUNC implementations.  */

+#define MAX_IFUNC      6

+

+size_t

+__libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,

+                       size_t max)

+{

+  assert (max >= MAX_IFUNC);

+

+  size_t i = 0;

+

+  unsigned long int hwcap = GLRO(dl_hwcap);

+  /* hwcap contains only the latest supported ISA, the code checks which is

+     and fills the previous supported ones.  */

+  if (hwcap & PPC_FEATURE_ARCH_2_06)

+    hwcap |= PPC_FEATURE_ARCH_2_05 | PPC_FEATURE_POWER5_PLUS |

+             PPC_FEATURE_POWER5 | PPC_FEATURE_POWER4;

+  else if (hwcap & PPC_FEATURE_ARCH_2_05)

+    hwcap |= PPC_FEATURE_POWER5_PLUS | PPC_FEATURE_POWER5 | PPC_FEATURE_POWER4;

+  else if (hwcap & PPC_FEATURE_POWER5_PLUS)

+    hwcap |= PPC_FEATURE_POWER5 | PPC_FEATURE_POWER4;

+  else if (hwcap & PPC_FEATURE_POWER5)

+    hwcap |= PPC_FEATURE_POWER4;

+

+#ifdef SHARED

+  /* Support sysdeps/powerpc/powerpc64/multiarch/memcpy.c.  */

+  IFUNC_IMPL (i, name, memcpy,

+             IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_HAS_VSX,

+                             __memcpy_power7)

+             IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_ARCH_2_06,

+                             __memcpy_a2)

+             IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_ARCH_2_05,

+                             __memcpy_power6)

+             IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_CELL_BE,

+                             __memcpy_cell)

+             IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_POWER4,

+                             __memcpy_power4)

+             IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_ppc))

+#endif

+

+  return i;

+}

diff --git glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/init-arch.h glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/init-arch.h

new file mode 100644

index 0000000..b7d238c

--- /dev/null

+++ glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/init-arch.h

@@ -0,0 +1,18 @@

+/* This file is part of the GNU C Library.

+   Copyright (C) 2013 Free Software Foundation, Inc.

+

+   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/init-arch.h>

diff --git glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memcpy-a2.S glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memcpy-a2.S

new file mode 100644

index 0000000..2d5bfa9

--- /dev/null

+++ glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memcpy-a2.S

@@ -0,0 +1,39 @@

+/* Optimized memcpy implementation for PowerPC A2.

+   Copyright (C) 2013-2014 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/>.  */

+

+#include <sysdep.h>

+

+#undef EALIGN

+#define EALIGN(name, alignt, words)				\

+  .section ".text";						\

+  ENTRY_2(__memcpy_a2)						\

+  .align ALIGNARG(alignt);					\

+  EALIGN_W_##words;						\

+  BODY_LABEL(__memcpy_a2):					\

+  cfi_startproc;

+

+#undef END_GEN_TB

+#define END_GEN_TB(name, mask)					\

+  cfi_endproc;							\

+  TRACEBACK_MASK(__memcpy_a2,mask)				\

+  END_2(__memcpy_a2)

+

+#undef libc_hidden_builtin_def

+#define libc_hidden_builtin_def(name)

+

+#include <sysdeps/powerpc/powerpc64/a2/memcpy.S>

diff --git glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memcpy-cell.S glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memcpy-cell.S

new file mode 100644

index 0000000..92c06be

--- /dev/null

+++ glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memcpy-cell.S

@@ -0,0 +1,39 @@

+/* Optimized memcpy implementation for PowerPC/CELL.

+   Copyright (C) 2013-2014 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/>.  */

+

+#include <sysdep.h>

+

+#undef EALIGN

+#define EALIGN(name, alignt, words)				\

+  .section ".text";						\

+  ENTRY_2(__memcpy_cell)					\

+  .align ALIGNARG(alignt);					\

+  EALIGN_W_##words;						\

+  BODY_LABEL(__memcpy_cell):					\

+  cfi_startproc;

+

+#undef END_GEN_TB

+#define END_GEN_TB(name, mask)					\

+  cfi_endproc;							\

+  TRACEBACK_MASK(__memcpy_cell,mask)				\

+  END_2(__memcpy_cell)

+

+#undef libc_hidden_builtin_def

+#define libc_hidden_builtin_def(name)

+

+#include <sysdeps/powerpc/powerpc64/cell/memcpy.S>

diff --git glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memcpy-power4.S glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memcpy-power4.S

new file mode 100644

index 0000000..eb01d67

--- /dev/null

+++ glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memcpy-power4.S

@@ -0,0 +1,39 @@

+/* Optimized memcpy implementation for PowerPC64/POWER4.

+   Copyright (C) 2013-2014 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/>.  */

+

+#include <sysdep.h>

+

+#undef EALIGN

+#define EALIGN(name, alignt, words)				\

+  .section ".text";						\

+  ENTRY_2(__memcpy_power4)					\

+  .align ALIGNARG(alignt);					\

+  EALIGN_W_##words;						\

+  BODY_LABEL(__memcpy_power4):					\

+  cfi_startproc;

+

+#undef END_GEN_TB

+#define END_GEN_TB(name, mask)					\

+  cfi_endproc;							\

+  TRACEBACK_MASK(__memcpy_power4,mask)				\

+  END_2(__memcpy_power4)

+

+#undef libc_hidden_builtin_def

+#define libc_hidden_builtin_def(name)

+

+#include <sysdeps/powerpc/powerpc64/power4/memcpy.S>

diff --git glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memcpy-power6.S glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memcpy-power6.S

new file mode 100644

index 0000000..13b514d

--- /dev/null

+++ glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memcpy-power6.S

@@ -0,0 +1,39 @@

+/* Optimized memcpy implementation for PowerPC/POWER6.

+   Copyright (C) 2013-2014 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/>.  */

+

+#include <sysdep.h>

+

+#undef EALIGN

+#define EALIGN(name, alignt, words)				\

+  .section ".text";						\

+  ENTRY_2(__memcpy_power6)					\

+  .align ALIGNARG(alignt);					\

+  EALIGN_W_##words;						\

+  BODY_LABEL(__memcpy_power6):					\

+  cfi_startproc;

+

+#undef END_GEN_TB

+#define END_GEN_TB(name, mask)					\

+  cfi_endproc;							\

+  TRACEBACK_MASK(__memcpy_power6,mask)				\

+  END_2(__memcpy_power6)

+

+#undef libc_hidden_builtin_def

+#define libc_hidden_builtin_def(name)

+

+#include <sysdeps/powerpc/powerpc64/power6/memcpy.S>

diff --git glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memcpy-power7.S glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memcpy-power7.S

new file mode 100644

index 0000000..2aea73d

--- /dev/null

+++ glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memcpy-power7.S

@@ -0,0 +1,39 @@

+/* Optimized memcpy implementation for PowerPC/POWER7.

+   Copyright (C) 2013-2014 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/>.  */

+

+#include <sysdep.h>

+

+#undef EALIGN

+#define EALIGN(name, alignt, words)				\

+  .section ".text";						\

+  ENTRY_2(__memcpy_power7)					\

+  .align ALIGNARG(alignt);					\

+  EALIGN_W_##words;						\

+  BODY_LABEL(__memcpy_power7):					\

+  cfi_startproc;

+

+#undef END_GEN_TB

+#define END_GEN_TB(name, mask)					\

+  cfi_endproc;							\

+  TRACEBACK_MASK(__memcpy_power7,mask)				\

+  END_2(__memcpy_power7)

+

+#undef libc_hidden_builtin_def

+#define libc_hidden_builtin_def(name)

+

+#include <sysdeps/powerpc/powerpc64/power7/memcpy.S>

diff --git glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memcpy-ppc64.S glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memcpy-ppc64.S

new file mode 100644

index 0000000..b828915

--- /dev/null

+++ glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memcpy-ppc64.S

@@ -0,0 +1,41 @@

+/* Default memcpy implementation for PowerPC64.

+   Copyright (C) 2013-2014 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/>.  */

+

+#include <sysdep.h>

+

+#if defined SHARED && !defined NOT_IN_libc

+# undef EALIGN

+# define EALIGN(name, alignt, words)				\

+  .section ".text";						\

+  ENTRY_2(__memcpy_ppc)						\

+  .align ALIGNARG(alignt);					\

+  EALIGN_W_##words;						\

+  BODY_LABEL(__memcpy_ppc):					\

+  cfi_startproc;

+

+# undef END_GEN_TB

+# define END_GEN_TB(name, mask)					\

+   cfi_endproc;							\

+   TRACEBACK_MASK(__memcpy_ppc,mask)				\

+   END_2(__memcpy_ppc)

+

+# undef libc_hidden_builtin_def

+# define libc_hidden_builtin_def(name)

+#endif

+

+#include <sysdeps/powerpc/powerpc64/memcpy.S>

diff --git glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memcpy.c glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memcpy.c

new file mode 100644

index 0000000..305e963

--- /dev/null

+++ glibc-2.17-c758a686/sysdeps/powerpc/powerpc64/multiarch/memcpy.c

@@ -0,0 +1,55 @@

+/* Multiple versions of memcpy. PowerPC64 version.

+   Copyright (C) 2013-2014 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/>.  */

+

+/* 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

+/* Redefine memcpy so that the compiler won't complain about the type

+   mismatch with the IFUNC selector in strong_alias, below.  */

+# undef memcpy

+# define memcpy __redirect_memcpy

+# include <string.h>

+# include "init-arch.h"

+

+extern __typeof (__redirect_memcpy) __libc_memcpy;

+

+extern __typeof (__redirect_memcpy) __memcpy_ppc attribute_hidden;

+extern __typeof (__redirect_memcpy) __memcpy_power4 attribute_hidden;

+extern __typeof (__redirect_memcpy) __memcpy_cell attribute_hidden;

+extern __typeof (__redirect_memcpy) __memcpy_power6 attribute_hidden;

+extern __typeof (__redirect_memcpy) __memcpy_a2 attribute_hidden;

+extern __typeof (__redirect_memcpy) __memcpy_power7 attribute_hidden;

+

+libc_ifunc (__libc_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);

+

+#undef memcpy

+strong_alias (__libc_memcpy, memcpy);

+libc_hidden_ver (__libc_memcpy, memcpy);

+#endif

-- 

1.8.3.1