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